Single direction ratchet mechanism

Abstract

The invention discloses a unidirectional ratchet wheel, which is characterized in that a through hole with double circle centers (A, B) is arranged on a plane of even thickness at one end of a handle; the intersection point of the extended line of the connecting line between the circle centers A and B on a hole wall of the through hole near the handle is arranged as the center; 1-20 internal teeth are arranged along the radial direction on the left and the right sides of the hole wall; a ratchet wheel is positioned within the through hole; the ratchet wheel can be moved along the connecting line of circle centers A and B and meshed with the internal teeth; the ratchet wheel and the internal teeth can be rotated unidirectionally together or separately; the centerline of the handle is intersected with the extended line of the connecting line of the circle centers A and B, or jointed with the extended line as one line, or parallel with the extended line; the ratchet wheel is provided with a square hole or connected with a plurality of mechanical pieces; each tooth of the ratchet wheel is provided with an arc addendum face C, with the side length D larger than the side length E; and the side length T of the of the internal teeth larger than the side length L. The unidirectional ratchet wheel has the advantages of high performance, high torque, good intensity, light weight, no elastic pressure on the ratchet wheel, no lag in rotation, stable operation, reliability and convenient usage.

Description

[0001] Technical field [0002] The invention relates to an intermittent motion mechanism, in particular to a one-way ratchet mechanism. Background technique [0003] Ratchet mechanisms are widely used in various industries. In order to improve work efficiency, the application of ratchet mechanism in the field of hardware tools is constantly expanding. With the development of science and technology, the existing ratchet mechanism has been difficult to adapt to the development of modern industry and agriculture. Therefore, the research on high-performance, high-torque ratchet mechanism has become an urgent problem to be solved by mechanical researchers. Therefore, there are many applications for ratchet mechanism patents in recent years. Chinese patent: a ratchet mechanism, patent No. 02228083.9, which is disclosed in the application, and the position of the working force of the multi-pawl is poor, so that the turning angle is small. Its principle is the same as the old-fas...

AI Technical Summary

Problems solved by technology

However, there are defects such as small pawls, thin ratchet teeth, and weak shaft pins. When a slightly large torque is used, it is easy to cause tooth jumping or even tooth collapse, and the mechanism is complicated and the strength is poor.

As for the multiple pawls, the resistance to the ratchet spring pressure is greater, and the pawls are more likely to rotate simultaneously with the ratchet stagnation belt, so that the ratchet mechanism cannot work.

Images