Electric bicycle brake with bidirectional braking function

Abstract

The invention discloses an electric bicycle brake with a bidirectional braking function. The electric bicycle brake comprises a brake box, a left brake shoe, a right brake shoe and a crank, wherein the brake box is provided with a fixing core crescent groove, an adjusting and fixing groove, an adjusting column rivet groove and an eccentric shaft mounting hole. The crank is rotatably connected with the left brake shoe and the right brake shoe in a contact mode through an eccentric shaft penetrating through the eccentric shaft mounting hole. The eccentric shaft is of a T-shaped structure, the upper end of the eccentric shaft is in a cap shape, supporting end faces are arranged on the two sides of the upper end of the eccentric shaft, and the lower end of the eccentric shaft is of a columnar structure. A fixing core penetrates through the fixing core crescent groove and is connected with the left brake shoe and the right brake shoe through a gasket and a lock nut. The fixing core drives the left brake shoe and the right brake shoe to conduct axial floating compensation motion around the fixing core crescent groove. After the structure is adopted, bidirectional braking is achieved, an automatic braking compensation and adjustment function of an original servo brake is maintained, and a hub brake eccentric shaft rotating mechanism is introduced to the servo brake so that a bicycle can be braked by the servo brake in the climbing process; and accordingly, the defect that the servo brake fails in the climbing process is overcome, the best contact faces between the brake shoes and a brake disc are achieved, and therefore the maximum brake force is generated.

Description

technical field [0001] The invention relates to a braking brake, in particular to an electric vehicle brake capable of bidirectional braking. Background technique [0002] At present, most of the existing electric vehicle follow-up brakes have a structure in which the brake block is movably connected to the brake box through the connecting shaft. In the follow-up section of the brake block, the brake lever is connected to the connecting shaft, and the other end of the auxiliary brake block is fixed on the connecting shaft. , the end of the connecting shaft is provided with an eccentric cam, and the eccentric cam leans against the other end of the main brake block. When the brake lever is turned, the eccentric cam relies on the eccentric action of the main brake block to generate braking force. As the eccentric cam continues to rotate, The main brake block drives the auxiliary brake block to follow through the connecting shaft, and the two shoe blocks generate braking force a...

AI Technical Summary

Problems solved by technology

However, this structure often fails to brake when the electric vehicle climbs a slope. When the brake line is pulled, due to the poor braking effect of the one-way brake, the wheel automatically slides down, which is likely to cause brake failure when climbing a slope. In addition, the traditional follow-up brake is eccentric The shaft is set vertically, and the brake lever drives the cam to rotate a certain angle, so that the shoe group expands outward to achieve the purpose of braking. The friction loss of the friction plate is serious, and the service life of the friction plate is seriously affected, so how to provide a method that not only maintains the automatic compensation and adjustment braking function of the original servo brake, but also introduces the hub brake mechanism into the servo brake so that there is a gap between the brake shoe and the brake disc. The maximum braking force becomes an urgent problem to be solved

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