High-torsion universal joint structure

Abstract

The invention provides a high-torsion universal joint structure which comprises two drive pieces and a connecting piece; each drive piece is provided with a pivoted end; the pivoted end is provided with a pivoted hole; the connecting piece is provided with two axial holes; axial pieces are respectively arranged between the two axial holes and the two pivoted holes to generate relative pivot-swing relation between the connecting piece and the drive pieces; two lateral surfaces of the connecting piece are arranged in the two inner surfaces of the drive pieces in the sliding way; two extension parts which extend towards the bottom of the driving pieces are respectively formed on both ends of the connecting piece to enable the pivoted ends of the driving pieces to endure large torsion and reduce the loss caused by the deformation of the pivoted ends, so as to realize the advantage of improving the service life.

Description

technical field [0001] The invention relates to a universal joint, in particular to a universal joint structure capable of withstanding high torque operation. Background technique [0002] Please refer to Figure 9 to Figure 11 , is the first conventional universal joint 90 structure, its connecting block 91 is set as a rectangular block, one end of the connecting block 91 is provided with a first pin 92 to pivotally connect a driving head 93, the connecting block 91 is opposite to the driving head 93 A second pin 94 is provided at one end to pivotally connect a socket joint 95 . The axis centers of the first pin 92 and the second pin 94 are perpendicular to each other but do not intersect each other, so that when the driving head 93 and the sleeve joint 95 are manually rotated, the allowable working angle range is relatively large. [0003] However, since the axis centers of the first pin 92 and the second pin 94 do not intersect, when the drive head 93 and the sleeve join...

AI Technical Summary

Problems solved by technology

[0007] The reason for the above-mentioned defects is that when running at high speed, the part where the two pivot ears of the drive head 83 (or the sleeve joint 85) bears the torsion is located at the position of the distance H, where the lack of deformation and damage is easy to occur, resulting in the second event. The joint 80 is unsuitable for use, so the existing methods are to set rounded corners 86 at the position near the bottom surface of the second pivot ear to increase the torsion that the second pivot ear can bear

However, setting the bottom end of the second pivot lug as a rounded corner 86 cannot effectively improve its ability to withstand torsion, because the second pivot lug is still easily deformed and damaged

[0008] Simultaneously, the first kind of universal joint 90 also has the aforementioned missing existence

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