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Connecting structure of saw bit of swing saw

The utility model discloses a connecting structure of a saw bit of a swing saw. The connecting structure of the saw bit of the sawing saw comprises a connecting handle portion. A U-shaped through groove is arranged at the outer side end of the connecting handle portion, wherein the opening of the U-shaped through groove faces outwards. The opening end of the U-shaped through groove is connected with the outside contour line of the handle portion. An upper through groove, a lower through groove and an inner through groove are respectively arranged inward the handle portion, and the upper wall, lower wall and the bottom wall of the U-shaped through groove. Connecting holes are respectively formed in the connecting handle portion, and outer sides of the upper through groove and the lower through groove. Two connecting holes are respectively formed in the handle portion, between the upper through groove and the inner through groove, and between the lower through groove and the inner through groove. The connecting structure of the saw bit of the sawing saw can be used in a matched mode with the swing saws with different brands or sorts common in the market produced by different manufacturers. The general utilization of the saw bit is achieved, and the saw bit can be accurately installed on the swing saw to use and is convenient to replace for a user. Purchase of a dedicated matching saw bit is not needed, and use cost is greatly reduced.