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Marketing / Public Relations New York, NY, United States Apply Now MANAGER, PUBLIC RELATIONS Key areas of focus for the Public Relations Manager include building pitches, creating press campaigns to build brand awareness and acquire new members. This position will be focused on6/12/2016 New York, NY Save This Job
at AnchorFree Inc. Menlo Park AnchorFree?s mission is to provide secure and private access to the world?s information for every person on the planet. AnchorFree?s Hotspot Shield app is the world?s most popular freedom and privacy platform. Hotspot Shield is the starting point,6/20/2016 Menlo Park, CA Save This Job
SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on7/21/2016 Hawthorne, CA Save This Job
Marketing / Public Relations New York, NY, United States Apply Now Major Responsibilities The Senior Director of Integrated Marketing position at Gilt Groupe is responsible for driving overall demand for the Women?s and Men?s businesses. This individual will leverage consumer7/12/2016 New York, NY Save This Job
Currently reporting to the CEO, this Individual Contributor will serve as the primary point of contact for the marketing function. This individual will execute against the marketing strategy by leveraging external resources (ie public relations firm, website consultant, etc). The6/18/2016 Watertown, MA Save This Job
Marketing New York, NY, United States Apply Send Jobvite Director of Marketing, PR & Communications xAd enables real-time, location-based mobile marketing, without the guesswork. Working with xAd, marketers can deliver more relevant, personalized messages to the right people6/8/2016 New York, NY Save This Job
NYC One of New York?s fastest-growing and most innovative tech companies is seeking a passionate leader to develop and implement a comprehensive communications strategy. This is a highly visible position in a dynamic, fast-paced, and creative environment. Candidates should have6/14/2016 New York, NY Save This Job
New York City MongoDB is the fastest-growing database on the planet, used globally to transform industries with incredibly innovative applications. Joining this team is a rare opportunity to be the voice behind a breakthrough company that is disrupting a $35B market. We are6/4/2016 New York, NY Save This Job
Essential Duties and Responsibilities include the following: (Other duties may be assigned) Develop and executes comprehensive marketing plans and programs, both short and long range, to support new product launch and position the product and Company with target6/13/2016 San Jose, CA Save This Job
Department: Marketing Location: Boston, MA Director, Product Marketing, SaaS The Director, Product Marketing, SaaS at Acquia is the face of Acquia?s SaaS products?Acquia Lift, Acquia Content Hub, and Acquia Search?and primary advocate to the market. We are seeking an experienced7/26/2016 Boston, MA Save This Job
Marketing Apply now Posted: June 29, 2016 Full-Time South Jordan, UT, United States Alliance Health is looking for a Sr Director of Media & Demand Generation. In this role, you will drive our media & demand generation strategy and execution in support of revenue objectives7/21/2016 South Jordan, UT Save This Job
Marketing / Public Relations New York, NY, United States Apply Now Position Summary: Gilt Groupe is seeking a Director of CRM & Loyalty Marketing to develop strategies and execute programs that activate, grow and retain Gilt and Gilt City?s valuable customer base. In6/12/2016 New York, NY Save This Job
We are seeking an individual to lead Fransmart's Marketing division and manage our team's day-to-day activities Global Responsibilities: Position Fransmart as a worldwide authority in franchising Manage and direct Fransmart's marketing department Act as a company leader;7/26/2016 Alexandria, VA Save This Job
All times are in India Standard Time. ID 2016-1062 # of Openings 1 Job Locations US-PA-Blue Bell Posted Date 6/29/2016 Category Marketing More information about this job: Overview: CoreDial is looking for a seasoned Marketing Communications Director that is capable of6/30/2016 Blue Bell, PA Save This Job
Palo Alto About us: Syapse is a growing team of smart, passionate people committed to transforming the practice of medicine. Today, with the help of Syapse, doctors are harnessing complex clinical and genomic data to improve and extend the lives of cancer patients. Built on a6/19/2016 Palo Alto, CA Save This Job
CHICAGO, ILMARKETINGFULL-TIME APPLY FOR THIS JOB AVIA is seeking a skilled storyteller with a passion for clear, concise, effective communication. As AVIA?s Director of Marketing Communications, you would create compelling content that positions us as an innovation thought6/7/2016 Chicago, IL Save This Job
New York, NY ABOUT AIRTIME Social media has been great at keeping us in touch with everyone, but are we truly together? We believe that there?s a new movement in connectedness coming. A new social system in the digital world that can actually help us feel closer to those who6/1/2016 New York, NY Save This Job
Location: Altamonte Springs, FLDepartment: Call Center, OperationsType: Full TimeMin. Experience: Senior Manager/Supervisor Assistant Director of Client Relations, Operations, Call Center, Contact Center Summary: We are looking for a passionate Assistant Director of Client7/29/2016 Altamonte Springs, FL Save This Job
Location:Audubon, PA Job Code:DBDIR Description The Director, Business Development and Investor Relations (D-BD) is responsible for all activities related to the review and assessment of new technologies for the company, whether strategically targeted or otherwise, surgeon6/26/2016 Audubon, PA Save This Job
Common Sense Media is the nation's leading independent nonprofit dedicated to improving the lives of kids and families by providing the trustworthy information, education, and independent voice they need to thrive in a world of media and technology. Common Sense Media is seeking6/7/2016 San Francisco, CA Save This Job

subset: commoncrawl


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Response to 7 Easy Ways To Eat Fewer Carbs This Week:
That invariably translates to "one of my undisciplined gal pals claims to have stumbled into a set of unnecessary and inefficient rules that helped her stop eating too much garbage." Yes, some crappy voodoo diets work for some more than others, but none of them are superior to a lifestyle that involves regular exercise and a diet consisting of a healthy balance of macronutrients. Going low carb will help some stop stuffing themselves with Doritos, sure, but rather than risk crashing out on a fad that leaves you with no energy to exercise, you can ditch the crazy generalizations and set yourself on a path to a lifetime of healthy weight by just replacing that bag of Cool Ranch with a banana.
Response to 7 Easy Ways To Eat Fewer Carbs This Week:
These sort of diets are the modern equivalent of medieval people eating goat testicles to reduce their "black bile." Mystic remedies are as old as civilization, and it seems certain people just have an innate urge to buy into them against all better judgment. It's the psychological pleasure of being a presumed expert on a body of folk wisdom, not the actual results [or lack thereof], that they want.
So you can waste a ridiculous amount of money on a marketing ploy designed to be photographed, not eaten?
There was also an episode of the Drew Carey Show where they did some of the scenes with Sims animation.
Correct, but nitpicking hatewatchers will latch on to anything.
MY THEORY: It doesn't really matter and some AGOT fans need to get a life.
We fought in WW2 to stop immigration from Mexico? Fox News "history" at its best here.
Also, who cares about a measly $2000 on your tax return when private health insurance premiums consume $20,000 or more before you've even paid a dime on your deductible? This is what conservatives don't/refuse to understand. Yes, what Bernie is proposing isn't "free," but it's not like Americans are getting a bargain on private tuition and health care as it is. Yet, somehow, it's better to pay $20,000 in ridiculous, inflated fees to banks and insurance companies than to pay $2,000 to the federal government.
OK, so investing in a wall would create jobs but investing in skill training and health care infrastructure for Americans wouldn't? It just goes to show that Republicans love "socialism" when it puts money into their own pet issues.
For those playing at home, the current status of law & order conservatism stands at: Some guy comes over the border to pick lettuce so he can feed his family = "The law must be upheld at all costs, prosecute!" Some banker engineers a scheme that defrauds Americans of billions = "Prosecutors must act with discretion. We can't throw people in jail for breaking every little regulation!"
The level of ecological damage caused by building a wall would vastly outscale the things you mentioned. That's like comparing dumping out a barrel of toxic waste to dumping out a can of soda. If you want to stop illegal immigration, prosecute their employers. When demand for labor drops, they'll stop coming, just as illegal immigration slowed down considerably during the recession. Of course, employers of illegal immigrants give big bucks to "anti-immigration" Republicans to ensure nothing is ever really done to cut off the supply of cheap labor, so instead of pursuing a viable solution, they make a lot of hot air and dupe their supporters into chasing the fantasy of a wall.
There's no need. Today's college students already know everything.
"Deconstruct" is the new "literally."
"Cool" just means charismatic indifference. It's not something you can buy or dress up as, and it's definitely not the same thing as being fashionable. You can be fashionable and cool, but you are just as likely to be unfashionable and cool (though being cool typically has the side effect of making whatever you happen to be wearing seem fashionable). However, people working in fashion typically don't realize this since they tend to be deeply concerned about what other people think, so I wouldn't go looking to them for opinions about what makes someone cool.
I think you need a lot of studio oversight to make a big multi-movie series work. Left to their own devices, too many directors will use the spotlight of a marquee franchise to try to make some grand philosophical statement instead of just telling a solid story, and this has been a problem Warner Bros. has had for a long time. They managed the Harry Potter movies well, but they let the Matrix and the Hobbit go completely off the rails. Ideally, we'd get different directors doing a condensed and faithful adaptation of some of the better JLA episodes, but instead, we got Zack Snyder running wild using JLA as a prelude to his Ayn Rand movie.
"And Superman hates Batman because he believes in the rule of law, and is like, 'Bro, like, judge, jury, and executioner? That's not cool!'" - Zack Snyder In other words, this movie is stupid.
Well nerds, this is what you get for supporting a movie you haven't seen like it was a political candidate.
WaWa has nothing on Sheetz.
Response to 28 Reasons Women Shouldn't Dye Their Hair:
Real life doesn't photoshop your hair. Regardless of what your friends and stylist politely tell you, you'll just look like you got drunk and dunked it in Kool-Aid.
There is a subculture of bizarrely zealous, child-hating bigots who relentlessly troll parenting articles in the name of the "childfree community." That's why you see comments like KristyNCGal's. Of course, those people represent a microscopic minority of people who choose not to have children. As the squirrel-god who lives in my crawl space says, internet comments just tend to attract the crazies.
Sounds awesome, bro! I wish I had narcissistic personality disorder!
I got the impression that the people in the video aren't too knowledgeable/interested in history and were mostly disappointed that they didn't get to claim some tenuous ethnic link to some "cool" North American minority group whose culture they had been appropriating.
So does hipster just mean "anyone under the age 35" at this point?
Response to 18 Reasons Why Parents Can't Stand Caillou:
Research into children's media showed that a lot of late 90's/early 00's "educational" programming on PBS just ended up teaching children more effective strategies for being cruel to their peers and deceiving parents. The problem was that the first two thirds of episodes would tend to just demonstrate cruel and antisocial behavior, and kids would either stop paying attention by the end or simply not connect the moral lesson taught at the end. To be fair, this did correlate with increased emotional intelligence but only to the extent that emotional intelligence helps you to manipulate others.
Response to 27 Times Urban Outfitters Went Way, Way Too Far:
So when does this article get repackaged as "27 Things at Urban Outfitters That You Need In Your Life Right Now"?
Steak Knives
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|Publication number
|Publication type
|Application number
|Publication date
|Jul 21, 1992
|Filing date
|Feb 8, 1991
|Priority date
|Jun 19, 1987
|Fee status
|Also published as
|Publication number
|Shingo Asai, Katsumi Nakajima, Akihiko Matsumoto
|Original Assignee
|Minolta Camera Kabushiki Kaisha
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (8), Referenced by (28), Classifications (29), Legal Events (3)
|External Links: USPTO, USPTO Assignment, Espacenet
This is a continuation of application Ser. No. 208,961, filed on Jun. 20, 1988, now abandoned, for a coupling structure and method of resin moldings.
1. Field of the Invention
The present invention relates to a coupling structure for a pair of members at least one of which is a resin molding member and a coupling method thereof.
2. Description of the Prior Art
The coupling structure and the coupling method to be herein referred to will be illustrated below with reference to exterior parts such as an exterior cover of a camera and a transparent plate to be coupled therewith.
As shown in FIG. 30, on a front cover 34 of a camera there are provided a lens cover window 35, a view finder objective window 36, a flashing section window 37 of an electronic flash unit, etc., with which the respectively designated molded members are coupled. As to their coupling structure there exist several coupling methods shown in FIGS. 31(a) to 31(d) with respect to the lens cover window 35.
Firstly, one of those structures is, as shown in FIG. 31(a), a coupling structure by integration of parts in insert molding. That is to say, on the whole periphery of a transparent plate 38 as an assembling part of an undercut is provided, and with the transparent plate 38 held in a die, resin is poured therearound to form a front cover 34, thereby coupling the front cover 34 with the transparent plate 38.
Secondly, there is a structure as shown in FIG. 31(b) made by applying an adhesive 39 to the whole periphery of the transparent plate 38 so that the front cover 34 can be integrated with the transparent plate 38.
Third, there is a thermal fusing coupling structure of applying a supersonic wave to the engaging part between the transparent plate 38 and the front cover 34, thereby partially fusing the peripheral part thereof.
Now, in the case of water-proof cameras, with respect to the relation between the front cover 34 and the transparent plate 38 as above, it is required not merely to couple two things together but also to couple them so as to produce a water-proof effect to the coupled product. To this end, the application of an adhesive in FIG. 31(b) or the thermal fusing in FIG. 31(c) is normally provided over the whole periphery of the coupling part. From the view point of waterproofing as above, there may be given a structure to use packings 40, 41 as in FIG. 31(d). In this structure, the front cover 34 and an auxiliary cover 42 are respectively provided with recesses, and, with packings 40, 41 fitted into these recesses, the front cover 34 and the auxiliary cover 42 are coupled together in an appropriate method.
However, the aforementioned structures FIGS. 31(b) and 31(d) have disadvantages in requiring subsidiary materials such as adhesives, packings (sealing material), involving extremely poor efficiency of assembling work. The structure (c) necessitates a fusing process of applying a separate energy of heat to a resin molding product. Moreover, these coupling structures FIGS. 31(b), (c), and 31(d) cannot be realized before preparing in advance the two molding materials to be coupled. As to the coupling structure FIG. 31(a), although coupling is performed in a die for molding one of the molding materials, it is by all means necessary as its premise to prepare the assembling part.
As reviewed above, conventional coupling structures have had drawbacks in requiring many assembling steps and subsidiary materials and in automatization of assembling work and curtailment of part items. Moreover, since the highest strength is obtained in, for example, the structure FIG. 31(a) when the wall thickness L1 of the undercut part is selected to be 1/3 of the whole wall thickness t (ref. FIG. 32), particularly in the case of a generally thin-type member, the undercut part has to be made extremely thin, with the result that it has insufficient strength.
It is an object of the present invention to provide a coupling structure and a coupling method in which the work of coupling the two members is simple and does not require use of a subsidiary material.
Another object of the present invention is to provide a coupling structure and a coupling method in which strong coupling can be obtained.
Briefly speaking, the present invention couples a first member with a thermoplastic second member by utilizing a coupling force produced by constricting the volume of resin during the molding of the resin and/or generation of an undercut structure resulting from deformation of a member caused by the flow pressure of resin and the resin temperature. On one of the first member and the second member a recess indented in the laying direction is provided, and on the other of them a projection to enter into the above recess is provided.
Therefore, according to the present invention, coupling of the two members is achieved simultaneously with molding of the second member. As this system does not necessitate the use of an adhesive or subsidiary material such as packing or separate energy such as supersonic wave for coupling, it can largely contribute to automatization of the work due to the small number of work steps and parts. Additionally, the coupling structure which includes a tight contact bond on at least one surface of the projection and recess has a waterproof effect. Furthermore, when an undercut structure is formed on the coupling part, extremely strong coupling is obtained. And, as the undercut is formed by deformation of the projection of the first member, no undercut structure is required to be formed on the die, so that no extra cost or burden has to be forced on the die.
These and other objects and features of the present invention will become apparent from the following description taken in conjunction with preferred embodiment thereof with reference to the accompanying drawings, throughout which like parts are designated by like reference numerals, and in which:
FIG. 1 is an enlarged perspective view of the coupling structure in which the present invention is worked,
FIG. 2 is a front view of the coupling structure showing another embodiment of the present invention,
FIGS. 3(i) and 3(ii) are schematic views showing another embodiment of the present invention,
FIGS. 4(i) to 4(iv) are views to show a molding procedure of the coupling structure of the present invention,
FIGS. 5(a) to 5(f), FIGS. 6(a) to 6(f), and FIGS. 7(a) to 7(f) are respectively views showing the cases where the present invention is applied to the front cover of a camera,
FIGS. 8(a) to 8(d), FIGS. 9(a) to 9(d), and FIGS. 10(a) and 10(b) are respectively views showing the cases where the present invention is applied to the rear cover of a camera,
FIGS. 11(a) and 11(b) are views showing the case where the present invention is applied to the front cover of a camera,
FIGS. 12(a) to 12(h) are views to exemplify various shapes of projections constituting the coupling structure of the present invention,
FIGS. 13(a) to 13(c), FIGS. 14(a) to 14(c), FIGS. 15(a) to 15(c), FIGS. 16(a) to 16(c), FIGS. 17(a) to 17(c), FIGS. 18(a) to 18(c), FIGS. 19(a) to 19(c), FIGS. 20(a) to 20(c), and FIGS. 21(a) to 21(c) are views showing various patterns of the coupling structure of the present invention,
FIG. 22 is an illustrative view on the resin to be used for the present invention,
FIGS. 23(a) to 23(c) are views to show a procedure of a coupling method in another embodiment of the present invention,
FIG. 24 is a front view of the coupling structure of a member formed in accordance with the procedure of FIGS. 23(a) to 23(c),
FIGS. 25(a) to 25(f) are views to illustrate examples of the shapes prior to coupling of the first member to be offered for the method of FIGS. 23(a) to 23(c),
FIGS. 26(A) to 26(F) are perspective views showing various shapes of projections which can be formed on the first member to be offered for the method of FIGS. 23(a) to 23(c),
FIGS. 27(a) to 27(c) are views for illustrating the relationship between the shape of projection and the deflection amount thereof,
FIG. 28 is a view to show the relationship between the resin temperature of the resin used and the flexural elastic constant,
FIG. 29 is a view to show the relationship between the direction of flow of the resin and the realization of the bend of the projection,
FIG. 30 is a front view of the front cover of a camera made under a conventional coupling structure,
FIGS. 31(a) to 31(d) show examples of various coupling structures with reference to the A-A' line sectional view of FIG. 30, and
FIG. 32 is an illustrative view of a conventional embodiment.
FIG. 1 is a perspective view showing an embodiment of the structure of the present invention, wherein the first thermoplastic molding member 1 has a plate-like portion with recesses 3a, 3b formed on each of its end sides (a), (b), and on the other hand the second thermoplastic molding member 2 has a plate-like portion with projections 4a, 4b provided to enter into the recesses 3a, 3b. In other words, the second molding member 2 has the joining parts to lie on the joining parts of the first molding member 1 and possesses the projections on its joining parts. The interlock of projections 9a, 9b with recesses 3a, 3b provide anchoring joints for contracting or shrinking forces 71, F2. Shrinking forces F1, F2 of the second molding member 2 are as a whole produced in the opposite direction to each other, by which the projections 4a, 4b are strongly joined with the inside walls 5a, 5b of the recesses 3a, 3b.
The recesses 3a, 3b and the projections 4a, 4b may be formed in plural numbers respectively on each part (a), (b). FIG. 2 shows the case where they are provided two each.
The coupling structure of the present invention is applicable not only to the case of setting the first molding member 1 in the opening 6 of the second molding member 2 as in FIG. 1 but also to the case where the first and second molding members 1, 2 are arranged one on the other, as in FIGS. 3(i) and 3(ii). In FIG. 3(i), the shrinking force of the second molding member 2 is working in the direction opposite to each other between (a) and (b), and in FIG. 3(ii), in the form of shrinking as shown in arrows. Now, when one of the molding members shrinks more largely than the other, a gap is formed on one side in the uneven part as illustrated, thereby generating a coupling force due to the molding shrinkage on the opposite surface thereto. However, the gap 7 [ref. FIG. 3(ii)] is not so distinctly available as illustrated but is only in a size of a micron order. Accordingly, for practical purposes it may be considered that there is scarcely a gap. It can be said, therefore, that the coupling of FIG. 3(ii) is a state of a projection 8 of the first molding member 1 being caught in between the two projections 4a, 4b of the second molding member 2.
FIGS. 4(i) to 4(iv) show steps of realizing the above coupling structure, particularly of that shown in FIG. 1, simultaneously with molding the first and the second molding members 1, 2. Firstly, in FIG. 4(i), thermoplastic resin is injected into a first cavity 11 formed by setting die 9 to die 10, thermoplastic resin is injected to form the first molding member 1. Then, the die 10 is retracted in the rightward direction on the drawing, and the die 9 is rotated 180� around an axis 12, as shown in FIG. 4(ii). Thereafter, the die 10 is set again and thermoplastic resin is injected in a second cavity 13 [ref. FIG. 4(iii)], by which the second molding member 2 is formed around the first molding member 1. At this time, in the first cavity 11, the next first molding member 1' is being molded. Finally, only a coupled product 14 is separated as shown in FIG. 4(iv). In the above FIG. 4(iii), even under the state of the first molding member 1 not being fully solidified (i.e., the condition of not being fully cooled down), the second molding member 2 may be molded. When so made, the shrinking forces f1, f2 of the first molding member 1 in FIG. 1 are to be concerned with the coupling, thereby in general providing the stronger coupling. In realizing the coupling structure of the present invention by way of a series of operations using the same die, molding may be performed not only by the core rotation system as shown in FIGS. 4(i) to 4(iv) but also by the so-called core back system. In the latter case, the first and the second molding members are to be molded in one and the same cavity. The coupling structures of the present invention shown in FIGS. 1, 2, 3(i) and 3(ii) exhibit water-proof effect.
In the next embodiment explained, the present invention is applied to the coupling of a camera cover with the exterior parts thereof. Firstly, FIG. 5(a) shows a front cover 15 of a camera, being provided with a taking lens cover window 16, a view finder objective window 17, a flashing section window 18 of an electronic flash unit, a self-timer display window 19, etc. Each window is coupled with a resin molding member comprising a light transmitting material. Though the camera includes, besides the aforementioned windows, a film sensitivity display window, a light receptor lens window for automatic exposure and/or automatic focusing, etc., they are omitted from the illustration in the drawing. FIG. 5(b) is a section taken along A--A' line, FIG. 5(c) is a B--B' line section, FIG. 5(d) is a C--C' line section, FIG. 5(e) is a D--D' line section, and FIG. 5(f) is an E--E' line section, respectively of FIG. 5(a). As can be perceived from each of the sections, in FIGS. 5(a) to 5(f), the second molding member 2 constituting the front cover 15 is coupled with the first molding member 1 which constitutes a colorless or colored transparent plate in a manner as shown in the above FIG. 2 over the whole periphery of the window.
The embodiments in FIGS. 6(a) to 6(f) and 7(a) to 7(f) are respectively in accordance with FIGS. 5(a) to 5(f), and many of them are the same as those in FIGS. 5(a) to 5(f). As shown in FIG. 6(b), the first molding members 1, 1 are integrally formed as a transparent plate to be coupled with the lens cover window 16 and it is noted that the flashing section window 18 differs from FIGS. 5(a) to 5(f). In FIGS. 7(a) to 7(f), with respect to the coupling of the first molding member 1 of the lens cover window 16, the system at the right and left end parts is the same as in FIG. 5(b), but at the top and bottom end parts the coupling is made in the conventional undercut coupling system as in FIG. 7(c). In a sense, this is an example wherein the present invention structure and the conventional structure are used in mixture according to necessity in respect to the coupling of one of the first molding members 1 to the second molding member 2. It should be added that even in the case of FIGS. 7(a) to 7(f), by partly using a split type die, molding can be performed with a single die.
FIGS. 8(a) to 8(d) show an embodiment in which the present invention is applied to a rear cover 20 of a camera. In FIG. 8(a), the part 21 is a film identifying window, 22 a view finder eyepiece window, 23 a film advance display window, and 24 a flash unit charge completion lamp window. FIG. 8(b) is an A1-A4 line sectional view, FIG. 8(c) is a B1-B4 line sectional view, and FIG. 8(d) is a C1-C2 line sectional view. The rear cover 20 also includes a film counter window and other elements, which have been omitted in the drawing for simplification.
FIGS. 9(a) to 9(d) show a coupling structure in the case where the rear cover 20 of a camera is composed of three molding members 25, 26, and 27. The molding member 25 is provided with a film identifying window 21, and the molding member 26 with a view finder eyepiece window 22. FIG. 9(a) is a back view, FIG. 9(b) a plan view, FIG. 9(c) an A--A' line section, and FIG. 9(d) a B--B' line section. It may be taken here that the part 26 is the above first molding member, and 25 and 27 are the second molding members. Such a structure is particularly effective in the case where it is desired to differentiate the material qualities or colors between the part 26 and the parts 25 and 27. FIGS. 10(a) and 10(b) show the case where the unevenness relations of the coupling parts of the molding members 25, 26, and 27 are inverted from the case of FIGS. 9(a) to 9(d), and FIGS. 10(a) and 10(b) are the sectional views corresponding to FIGS. 9(c) and 9(d).
In FIGS. 11(a) and 11(b), the front cover 15 is composed of three molding members 28, 29, and 30, of which the molding member 28 is partly overlaid with a fourth molding member 31 to form a double structure. This fourth molding member 31 is used in the case where, for example, it is desired to have the colors differentiated from others for decorative purpose, or to use a material of the quality which gives a good feel to the user when contacting the holding part, etc. FIG. 11(b) is an A13 A' line section of FIG. 11(a).
In each embodiment as illustrated above, the recess 3 and the projection 4 which are indispensable for the coupling of the two molding members may respectively have two or more joining faces. Of those, the shapes of the projection 4 will be exemplified in FIGS. 12(a) to 12(h), wherein FIGS. 12(a) and 12(b) show the cases of two faces, FIGS. 12(c) to 12(e) the cases of three faces, and FIGS. 12(f) to 12(h) the cases of multifaces.
Then, various patterns of the coupling structure of the present invention will be explained in accordance with FIGS. 13(a) to 21(c). In these figures, (a) is a plan view, (b) an A--A' line section, and (c) a B--B' line section.
FIGS. 13(a) to 13(c) show a basic type, wherein the projection 4 has a square pillar shape. Shrinkages of the first and second molding members 1 and 2 in the direction of arrow 32 yield a coupling force. In this case, depending on the material of the molding member, the shrinkage rate differs. Also, even in the case of the materials of the same quality, the shrinkage rate differs by length. Moreover, when one is molded first and the other thereafter, the shrinking force of the molding member which has been molded later has in principle a large effect upon the coupling.
In FIGS. 14(a) to 14(c), the projection 4 is of a cylindrical form, so the die can be more easily processed than the die of basic type of FIGS. 13(a) to 13(c). Its coupling force is of nearly the same degree as that of the basic type.
In the pattern of FIGS. 15(a) to 15(c), two line shaped coupling portions are provided. Due to the existence of the recess 3 and the projection 4 over the whole area in one direction, the coupling force in an arrow direction 33 is enlarged.
In FIGS. 16(a) to 16(c), coupling portions are formed similar to those in FIGS. 15(a) to 15(c), but the shape of each end of the recess 3 and the projection 4 is different from that of FIGS. 15(a) to 15(c), having effect against the external tensile strength in the arrow marked direction 33.
In FIGS. 17(a) to 17(c), the coupling parts are two slots, but due to the larger coupling areas than those of FIGS. 14(a) to 14(c), increased coupling forces can be expected. They are effective against the external force exerted in the direction of the arrow mark 32.
In FIGS. 18(a) to 18(c), there are more coupling parts than the basic type of FIGS. 13(a) to 13(c), and coupling surfaces due to the shrinkage in two directions, so that the coupling force is increased.
In FIGS. 19(a) to 19(c), the number of the coupling parts is the same as that of FIGS. 18(a) to 18(c), but due to the cylindrical shape, die processing is facilitated.
In FIGS. 20(a) to 20(c), the number of the coupling parts is the same as those of FIGS. 18(a) to 18(c), and FIGS. 19(a) to 19(c), but due to the slot shape, the larger coupling areas in the direction of arrow 32 can be secured, thereby allowing increased coupling force.
In FIGS. 21(a) to 21(c), the number of the coupling parts is the same as that of the basic type of FIGS. 13(a) to 13(c), but as the coupling parts are diagonally disposed, it is possible to produce the coupling forces in the two directions shown in arrows 32 and 33. Also, due to the slot shape, these coupling parts have a larger coupling force than the round grooves.
The representative resins of various existing materials for the first and second molding members 1 and 2 are given in FIG. 22.
The covers for the cameras in the above embodiment are generally colored ones, and the materials to be adapted to the windows are of the light transmitting materials. When these light transmitting materials are made of colorless-transparent materials, in the example of FIG. 22 there are available 18 kinds of combination between the colored opaque materials and the colorless-transparent materials. When the light transmitting materials are decoratively colored, there are assorted the colored opaque cover and the colored transparent window member, in which case the combination of them may vary in 36 kinds in the example of FIG. 22.
In FIG. 22, the abbreviations respectively denote the following:
PMMA: methyl polymethacrylate,
AS: acrylonitrile-styrene copolymer,
PC: polycarbonate,
ABS: acrylonitrile-butadiene-styrene resin,
POM: polyacetal (polyoxymethylene)
PBT: polybutylene terephthalate
In FIG. 22, there have been given only the basic kinds of resin, each of which is basically classified as one kind irrespective of variations in the matters contained in the resin itself (such as inorganic filler, glass, carbon, etc.) or glass content therein. Besides those given in FIG. 22 there are resins to which the present invention is applicable, some examples of which may be given for application to colored materials as PMMA, PE, PP (polypropylene), and LCP (liquid crystal polymer).
An explanation will now be given on for an embodiment which provides extremely strong coupling.
In FIG. 23(a), a first member 101 is arranged in a fixed state in a die 103 for molding a second member as illustrated. This first member 101 is formed, for example, of a resin molding member, but without being limited thereto, may be formed of elastic metal, glass, or rubber. On a joining part 104 of the first member 101 there is a projection 106 provided so as to form a recess 105.
With the first member 101 fixed in the die 103, molten thermoplastic resin 102' for the second member is poured into a cavity from the right side to the left side on the drawing. In the drawing, P shows a flow pressure of the above resin 102'. As the above resin 102' has its flow pressure and high temperature/high heat at the time of molding, when it reaches the first member 101 as in FIG. 23(b), it causes to soften the projection 106 of the first member 101 to start bending it. At this time, the projection 106 shows deformation under a cantilever support centering on the point 0.
When, under the above deformed condition of the member, the resin 102' flows into the entire space and solidifies, an undercut shape is realized in the coupling part between the first member 101 and the second member 102 as in FIG. 23(c) to make the coupling between them extremely strong.
In case of practicing the above method by a core rotation system, the abovementioned procedure given in FIGS. 4(i) to 4(iv) can be utilized as it is. Of course, the above coupling can be realized by a core back system.
FIG. 24 shows a part of the product in which coupling has been achieved by the above method. In this embodiment, the first member 101 functions as a member to cap the through hole 115 of the second member 102. Accordingly, though not specifically limited thereto, when the second member 102 is used as a cover for a camera, the first member 101 may be formed into a transparent exterior part.
Various configurations may be designed as the shapes of the coupling part 104 and the projection 106 of the above first member 101, of which representative ones are shown in FIGS. 25(a) to 25(f) and FIGS. 26(A) to 26(F). FIGS. 25(a) to 25(f) show the condition of the first member 101 being disposed in the die 103, wherein FIGS. 25(a) and 25(d) are side sectional views, and FIGS. 25(b), 25(c), 25(e) and 25(f) are top surface views. Shaded areas respectively represent the first member 101. The arrow mark 116 shows the flow direction of the molten resin 102' for the second member shown in FIGS. 23(a) and 23(b). FIGS. 25(a) and 25(b) show the examples in which the projection 106 is formed over the same length as the width (w) of the first member 101 at one end part of the first member 101, and FIG. 25(c) shows the case where three kinds of projections 106', 106', and 106' are aligned at intervals in the widthwise direction of the first member 101. FIG. 25(d) and 25(e) show the case where the projection 106 is provided not at the end part of the first member 101 but halfway thereof, the projection 106 being formed over the full width of the member. FIG. 25(f) is an example of having arranged three kinds of projections 106', 106', and 106' instead of the projection 106 of FIG. 25(e). While the examples of configurations of the projection are shown in FIGS. 26(A) to 26(F), these projections are to be deformed in molding the second member to provide an undercut structure at the joining part.
Then, the relation of the above projection with the deflection amount is explained with reference to the example of FIGS. 27(a) to 27(c). When, as shown in FIGS. 27(a) to 27(c), the projection 106 is assumed to be of a rectangular prism having a length of b, width of h, and a height of l, on exertion of a flow pressure P of resin 102', the deflection amount δ becomes: ##EQU1## where I is a secondary moment of the section.
And the secondary moment I of the section becomes: ##EQU2## where, E is the actual flexural elastic constant. Now, in the case of using PC (polycarbonate) resin as the first member 101 and ABS (acrylonitrile.butadiene.styrene) resin as the second member and further setting the following conditions to be: b=h=1 mm, l=2.5 mm, and P=200 kgf/cm2, the deflection amount δ is obtained with variation of the temperature T at the coupling part of the first member 101, as follows:
______________________________________When T = 20� C., δ = 0.50 mmWhen T = 100� C., δ = 0.63 mmWhen T = 200� C., δ = 0.83 mm______________________________________
FIG. 28 shows the relation between the temperature of the polycarbonate used as a material for the above first member 101 and the flexural elastic constant.
As the materials for each of the above members, almost all combinations of thermoplastic resins including the abovementioned PC, ABS, ABS+PS, AS (acrylonitrile.styrene copolymer), PMMA (methyl polymethacrylate), PBT (polybutylene terephtalate), POM (polyoxymethylene), etc. and elastomers of olefin, urethane, ester, etc. can be used. However, the thermal deformation temperature TA of the first member 101 must be higher than the molding die temperature TKB of the second member. Accordingly, the resin molding materials must be selected so as to satisfy the conditions: TA >TKB. Examples of such combinations are shown in the following table.
______________________________________ Material of Material of 1st member 2nd member______________________________________1 PC ABS2 PC PMMA3 PBT ABS______________________________________
As previously stated, as the materials for the first member, there may be usable metal, glass, rubber, etc.
Finally, FIG. 29 shows the results of review as to whether acceptable deformation of the projection 106 in the direction of flow of the resin shown in an arrow is obtainable or not according to the position and shape of the projection 106. When the deformation of projection at each position is acceptable to the resin which has run in from a gate 117 of the die 103, the areas are shown in blank, and when unacceptable or no deformation is obtainable, the areas are shown as a shaded zone.
While the invention has been described above in line with preferred embodiments, it is to be understood that the present invention is not to be limited to those embodiments but various alterations and modifications are feasible within the scope not to diverge from the purpose of the invention as described in the claims.
|Cited Patent
|Filing date
|Publication date
|Dec 29, 1977
|May 22, 1979
|Yoshio Ogi
|Plastic articles
|May 24, 1978
|May 6, 1980
|Leveen Harry H
|Molded hypodermic plunger with integral shaft and elastomeric head
|Mar 24, 1980
|Mar 9, 1982
|Minolta Camera Kabushiki Kaisha
|Plastic camera body with metal insert
|Nov 4, 1981
|Nov 29, 1983
|Canon Kabushiki Kaisha
|Single lens reflex camera body
|May 25, 1984
|Apr 22, 1986
|Saint-Gobin Vitrage
|Method and device for manufacturing glass sheets having surface structures molded-on by superficial molding
|May 16, 1970
|Dec 2, 1971
|Title not available
|Title not available
|Title not available
|Citing Patent
|Filing date
|Publication date
|Feb 10, 1997
|Nov 3, 1998
|Eastman Kodak Company
|Watertight body for accommodating a photographic camera
|Feb 10, 1997
|Apr 27, 1999
|Eastman Kodak Company
|Watertight photographic single-use camera having elastic polymer seal
|Mar 6, 1999
|Apr 15, 2003
|Krauss-Maffei Kunststoffechnik Gmbh
|Method for connecting several plastic components through injection molding around the sprue
|May 3, 1999
|Apr 15, 2003
|Bayer Aktiengesellschaft
|Composite consisting of a coated polycarbonate and a polymer
|Jan 29, 2004
|Dec 6, 2005
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Oct 4, 2005
|May 10, 2011
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Dec 27, 2011
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Apr 16, 2013
|Csp Technologies, Inc.
|Injection molding process for molding mechanical interlocks between molded components
|Nov 11, 2008
|May 7, 2013
|Robert Bosch Gmbh
|Multi-component injection-molded part with material-locking sealing
|Aug 16, 2010
|Sep 24, 2013
|Samsung Electronics Co., Ltd.
|Injection-molded product with permeability
|Nov 22, 2011
|Jan 27, 2015
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Jan 29, 2004
|Sep 23, 2004
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Oct 21, 2003
|Nov 18, 2004
|Mitsubishi Denki Kabushiki Kaisha.
|Coupling apparatus and a coupling method
|Jul 17, 2003
|Jan 19, 2006
|Toshiyuki Ai
|Method of manufacturing lens with hold frame, and lens with hold frame
|Oct 4, 2005
|Feb 2, 2006
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Jan 30, 2008
|Sep 4, 2008
|Denis Menin
|Method for producing a hollow part made of at least two portions, and part obtained
|May 4, 2007
|Mar 26, 2009
|Jean-Pierre Giraud
|Injection Molding Process for Molding Mechanical Interlocks Between Molded Components
|Aug 5, 2009
|Dec 3, 2009
|Trisa Holding Ag
|Plastic object for use in personal hygiene
|Nov 11, 2008
|Oct 21, 2010
|Guenter Krenz
|Multi-component injection-molded part with material-locking sealing
|Apr 7, 2011
|Samsung Electronics Co., Ltd.
|Injection-molded product with permeability
|Feb 19, 1997
|Aug 27, 1997
|Eastman Kodak Company
|Watertight body for accomodating a photographic camera
|Feb 19, 1997
|Aug 27, 1997
|Eastman Kodak Company
|Photographic camera
|Nov 7, 2002
|May 14, 2003
|Canon Kabushiki Kaisha
|Composite product and molding method for the same
|Feb 21, 2003
|Aug 27, 2003
|Suspension element
|May 4, 2007
|Aug 19, 2009
|CSP Technologies, Inc.
|Injection molding process for molding mechanical interlocks between molded components
|Mar 6, 1999
|Sep 10, 1999
|Krauss-Maffei Kunststofftechnik Gmbh
|Method for connecting several plastic components through encapsulation by injection molding
|May 3, 1999
|Nov 25, 1999
|Bayer Aktiengesellschaft
|Composite consisting of a coated polycarbonate and a polymer
|Jul 17, 2003
|Jan 29, 2004
|Zeon Corporation
|Method of manufacturing lens with hold frame, and lens with hold frame
|U.S. Classification
|403/24, 403/339, 403/267, 403/340
|International Classification
|Cooperative Classification
|European Classification
|Jan 11, 1996
|Fee payment
Year of fee payment: 4
|Jan 10, 2000
|Fee payment
Year of fee payment: 8
|Dec 22, 2003
|Fee payment
Year of fee payment: 12


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A person who hates feminists. Similar to people who hate others of different races are called racists.
Marc Lepine was a femist who hated feminists. Before shooting 14 students at École Polytechnique, Lepine shouted "you're all a bunch of feminists".
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My husband and I (both seniors) will be spending several days in Athens before and after a tour of the Peleponnese.
There are so many hotel choices....I am looking for central, some luxury...what do recent travellers to Athens recommend? I am leaning to Athens Gate..comments?
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Hotels in Athens
My husband and I (both seniors) will be spending several days in Athens before and after a tour of the Peleponnese.
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For central luxury I like the Grand Bretagne. It is located on Syntagma Square, within walking distance of most places you want to go. They have a great rooftop restaurant and bar with a fabulous view of the Acropolis.
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We really liked Athens Gate hotel last sept.
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Athen's Gate is great, though I wouldn't call it luxurious. We've stayed at Electra Palace, also, and it was definitely more luxurious than Athen's Gate.
We've never stayed at Grand Bretagne but highly recommend the rooftop restaurant.
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I would go to the Grand Bretagne for drinks and views. I would stay at the Electra Palace, which also has a great rooftop bar. And it's in a perfect location.
An Absolute Martini and pistachios on the rooftop while the lights come on the Acropolis.... one of those all time BEST moments!
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We stayed at the Heriodion Hotel on our last trip to Athens and really enjoyed it. It isn't luxurious, but it is very nice, and the location near the new Acropolis Museum was fantastic. You're just around the corner from the Plaka too. We'd previously stayed at Adrian Hotel in the Plaka and found it tired and dated in 2006 and much worse in 2009.
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HI, We are planning our 2nd trip back to Athens (after a Windstar cruise). In 2008 we stayed at the Athens Gate. We very much liked it, also a good rooftop bar. My parents still talk about it, as they were given an upgraded room with a balcony over looking the temple of Zeus. My husband wants to go back there. BUT I am looking around. I am willing to spend a bit more money this time (on our own) and be a bit more upscale with more room. Maybe direct in Plaka, which I LOVED!
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We have recently booked three nights at the Grand Olympic based on recommendations. I emailed the hotel directly, they got back to us promptly in perfect English. Haven't stayed yet so cannot make a first hand recommendation but location seems to be perfect and it has a roof top restaurant with views.
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Sorry, correction to the name of the hotel, it is Royal Olympic at 28-34 Athanasiou Diakou Str.
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Thank you everybody for your comments...we have chosen Athens' Gate...I can report later in May.
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Just spent a few days in Athens and stayed at the Athens Gate Hotel.
The Hotel is in a fantastic location with easy walking access to many sites of interest including the Acropolis, Acropolis Museum, Plaka, Monastiraki, Syntagma Square, National Gardens, etc.
The rooftop restaurant has the most spectacular views of the Acropolis, the Temple of Zeus and Athens. Breakfast is good and the restaurant has quite a decent menu for dinner.
The service is super right from check-in. The hotel and rooms are spotlessly clean. The lobby is very nicely appointed.
Regarding the rooms...they are rather on the small side, as are the bathrooms. We had a room on the front of the hotel looking out on the Temple of Zeus. The street noise can be quite loud if the door to the balcony is left open.
I would probably stay there again. Overall, it would appear to be good value.
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You might have a look at the Electra Palace Hotel, on the edge of the Plka near Syntagma Square. It also has a rooftop bar and restaurant with views of the Parthenon. I stayed there several years ago, very good hotel, great location.
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