Double-piston oil hydraulic handle assembly

Abstract

The invention discloses a double-piston oil hydraulic handle assembly, which comprises a body, an L-shaped pressure handle, a first piston module and a second piston module, wherein the body is connected with an oil pipe and provided with an oil hydraulic cylinder and first and second accommodating spaces, first and second passages on a straight line are formed among the oil hydraulic cylinder and the first and second accommodating spaces, angles are reserved between the first and second passages and a handle axis, and one end of the first accommodating space is communicated with the oil pipe; the L-shaped pressure handle is provided with a pivoted part, a push part and a pressing part, wherein the pivoted part is pivotally connected with one end of the body far from the oil pipe, one endof the pivoted part close to the body is connected with the push part, and the other end of the pivoted part is connected with the pressing part; the first piston module is arranged in the first accommodating space, two ends of the first piston module are connected with the oil pipe and the push part, and the first piston module has first stroke; and the second piston module is arranged in the second accommodating space, two ends of the second piston module are propped in the body and the push part, and the second piston module has second stroke greater than the first stroke.

Description

Technical field [0001] The present invention relates to brakes, and particularly relates to a brake handle assembly with a dual-piston module. Background technique [0002] As far as we know, the brake system of bicycles and other two-wheeled vehicles has a huge impact on the safety of riders. Therefore, manufacturers have spent considerable effort in the development and innovation of brake systems, from early drum brakes to direct rims. Braking cantilever brakes and V-clamp brakes, up to the recent hydraulic disc brakes, the brake system has made great progress, and the conventional hydraulic disc brakes are mainly used to lock a bicycle on the frame of a bicycle. Caliper. The caliper is equipped with a set of hydraulically driven brake pistons. A brake lever is located at the handlebar and transmits pressure to the brake pistons through the hydraulic pipe, which then acts on a brake that is coaxially locked at the wheel axis. The brake function of the disc is clamped. Such a h...

AI Technical Summary

Problems solved by technology

[0004] However, the hydraulic stroke of these designs is only single, so the design of the gap between the pad and the disc must be small, that is, the gap is about 0.3mm, so that the pad can fit the disc as soon as possible to achieve short-term braking However, because of the small gap, it is easy to cause some deformation due to long-term use of the disc itself. When driving, there will be a deflection phenomenon. It is easy to rub against the pads on both sides and affect the driving speed, and there will be damage to the pads. Furthermore, if the gap is small, it is easy for foreign matter such as sand and dust to get stuck in it, and it is also easy to rub against the pads on both sides to affect the driving speed, and there will be problems of damage to the pads and the disc; In addition, the structural accuracy of the frame, hub, front fork, etc. will affect the distance between the disc and the disc, which will cause friction during riding, which will affect the driving speed and damage the disc and the disc.

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