Bearing Overrunning Clutch

Abstract

The invention discloses a bearing type overrunning clutch, which is provided with retaining brackets which are arranged corresponding to rollers one to one. A wedge slot for engagement consists of arc segments concentric to an inner ring in transition, and a V-shaped opening of an elastic supporting claw of each retaining bracket is opposite to an engaged part of a wedged engagement space to support each roller along a circumferential direction. By the overrunning clutch, a bearing can be replaced, the cost is saved, the volume of a transmission system is reduced, a limiting seat is prevented from being directly machined on the inner ring or an outer ring, the machining process is simplified, the working efficiency is improved, and the machining cost is reduced; the positions of the rollers can be flexibly adjusted in the circumferential direction according to the need, and the machining and assembling precision is guaranteed; more rollers can be distributed in the circumferential direction, the bearing capacity is improved, and the dimension of the overrunning clutch can be reduced under the condition of higher bearing capacity; meanwhile, due to the elastic supporting claw, line contact limiting is formed, and a condition that the rollers deviate an axis due to imbalanced limiting is avoided; therefore, a mechanical failure caused by instable operation of the overrunning clutch is avoided.

Description

technical field [0001] The invention relates to a clutch device for motor vehicle transmission, in particular to an overrunning clutch. Background technique [0002] The overrunning clutch is a basic component that appears with the development of power products. It is an important component used for power transmission and separation between the prime mover and the working machine or between the driving shaft and the driven shaft inside the machine. It is mainly a device with a self-clutching function by utilizing the speed change of the main and driven parts or the transformation of the rotation direction. In practice, most of them are clutches that use the meshing of teeth, the meshing of ratchets and pawls, or the wedging action of rollers and wedges to transmit motion or torque in one direction. [0003] The roller overrunning clutch is widely used in higher speed occasions because of its uniform and stable transmission and large load capacity; the roller overrunning clu...

AI Technical Summary

Problems solved by technology

The limit seat is usually integrally formed on the inner ring or the outer ring, and the processing process is more complicated, which not only reduces the work efficiency, but also makes the processing cost higher

Due to the one-piece structure, the position in the circumferential direction cannot be adjusted according to the usage

Therefore, in order to facilitate processing and ensure processing accuracy, the inner star wheel type is widely used; but for the structure of the outer ring as an active transmission, it is not conducive to adapt to the transmission law of the overrunning clutch, resulting in shortened service life or affecting the transmission effect

[0004] Because the existing overrunning clutch is used to limit the limit seat and the elastic element of the roller, it occupies a large space position, so that it is impossible to arrange more rollers in the overrunning clutch, and the roller is the more important bearing capacity of the overrunning clutch. Components, the limitation of the quantity seriously affects the carrying capacity of the overrunning clutch; therefore, in the manufacturing process, it will consider increasing the size to adapt to the carrying capacity, resulting in a larger size of the transmission equipment, which does not meet the needs of modern mechanical equipment

Another thing is that the elastic element acts on the roller and restricts its reverse engagement in the circumferential direction. It acts on a point or part of the roller, which cannot achieve balance, making the roller easy to deflect, resulting in jamming or poor movement. , resulting in mechanical failure

[0005] The roller type overrunning clutch in the prior art is used in the transmission system, and it needs to be supported by rolling bearings, otherwise there will be instability and the required transmission effect cannot be achieved; due to the increase of the bearing structure, this increases the transmission system. volume, and increase the complexity of installation, maintenance and disassembly, and increase the cost of use

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