Hub type brake

Abstract

The invention discloses a hub type brake. The hub type brake comprises a casing, a rocker arm, a torsion spring, a left friction sheet, a right friction sheet, a rocker arm shaft and a sliding shaft, wherein the left friction sheet and the right friction sheet are movably arranged on the casing. The rocker arm penetrates into a through hole which is formed in the casing and matched with the rocker arm shaft, a spline ratchet wheel pocking device is arranged at the upper end of the rocker arm shaft, the lower end of the rocker arm shaft is connected with the rocker arm, the rocker arm is connected with the casing through the torsion spring, the left end of a spline nut butts against the rocker arm shaft, a sliding groove matched with the front end of the left friction sheet is formed in the rocker arm shaft, a convex block is arranged on the rocker arm, a limiting block is arranged on the edge of the casing, the limiting block is used for blocking the convex block arranged on the rocker arm, a sliding shaft hole matched with the sliding shaft is formed in a rear fixing base, a left sliding groove matched with the rear end of the left friction sheet is formed in the left end of the sliding shaft, a right sliding groove matched with the rear end of the right friction sheet is formed in the right end of the sliding shaft, and the bottom face of the left sliding groove and the bottom face of the right sliding groove are respectively an arc face.

Description

technical field [0001] The invention relates to a braking device of an electric vehicle, in particular to a hub type brake. Background technique [0002] An existing electric bicycle hub brake, such as a hub brake proposed in the utility model patent ZL201220328995.0 announced on January 16, 2013, includes a housing and a left friction plate and The right friction plate is provided with a rear fixing seat at the rear end of the shell, a left chute cooperating with the rear end of the left friction plate is arranged on the left side of the rear fixing seat, and a right friction plate is arranged on the right side of the rear fixing seat. The right chute at the rear end cooperates with each other, a rear return spring and a front return spring are arranged between the left friction plate and the right friction plate, and a front fixing seat is arranged at the front end of the shell, and a movable adjusting spline is arranged in the front fixing seat nut, a spline ratchet is a...

AI Technical Summary

Problems solved by technology

Since the swing arm drives the square shaft during the braking process, the square shaft must simultaneously push the right friction plate to the right through the sliding adjustment push rod and push the left friction plate to the left through the adjustment screw, that is, push it to the left and right at the same time , two directions of force, so the manual operation of pulling the swing arm is more laborious, which affects the safe braking of the vehicle

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