Coaxial high-precision rear fork

Abstract

The invention discloses a coaxial high-precision rear fork comprising an end shaft tube, a left tube I and a leg tube II. The leg tube I and the leg tube II are fixedly connected with the end shaft tube; the leg tube I is used for mounting a motor vehicle transmission; the leg tube II is provided with a shaft seat for rotational fi with a wheel shaft; the end of the leg tube II is provided with a drum sleeve, and the internal of the drum sleeve is drum shaped; the external of the shaft seat is in a drum structure; the drum sleeve sleeves the external of the shaft seat and is in sliding fit with the shaft seat. The shaft seat is connected to the leg tubes through a drum sliding pair, the shaft seat can automatically swing in the peripheral direction to adjust coaxiality, friction pairs can be automatically adjusted during mounting, no eccentric friction is caused, a brake fixed relative to the leg tubes allows the eccentric friction of wheels caused by friction pads to be automatically eliminated, no unbalanced force is caused to the wheels, the service life of a friction pair assembly is prolonged, and vehicle driving safety is guaranteed.

Description

technical field [0001] The invention relates to a flat fork for a two-wheeled motor vehicle, in particular to a flat fork whose coaxiality can be adjusted. [0002] Background technique [0003] The flat fork includes two-leg tubes and the end shaft tubes that are fixedly connected to the two-leg tubes; the rear wheel shaft holes are arranged on the two-leg tubes for installing the rear wheels; the flat fork and the rear wheels support the frame on the road together. The rigidity of the fork and wheel of the motor car is relatively large, and it is treated as rigid in theory. Therefore, the coaxiality of the rear wheel axle holes on the two leg tubes is more important. In particular, if the coaxiality of the shaft holes of the two leg tubes cannot be guaranteed, the wheel bearings will be eccentrically rubbed, the front and rear of the wheels will not be on the same plane, and the brake pads will also form eccentric friction pairs, which will deteriorate the operating condi...

AI Technical Summary

Problems solved by technology

In particular, if the coaxiality of the shaft holes of the two leg tubes cannot be guaranteed, the wheel bearings will be eccentrically rubbed, the front and rear of the wheels will not be on the same plane, and the brake pads will also form eccentric friction pairs, which will deteriorate the operating conditions of the vehicle and cause Increase vehicle maintenance costs

As a result, the brake pads or other friction pairs will generate additional torque when the vehicle is running, and the precise transmission of torque cannot be guaranteed, which will affect the normal operation of the adaptive automatic transmission and the normal operation of the vehicle.

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