Closed type adjustable oil brake upper pump

Abstract

The invention discloses a closed type adjustable oil brake upper pump which comprises an adjustment nut (2), an adjustment screw rod (3), a limiting buckle (5), an adapter (10), an adjustment fork (12), an adjustment fork screw (13) and a protection sleeve (16). The closed type adjustable oil brake upper pump is of an oil pressure disc brake upper pump structure with a closed type oil path, so that the volume of an oil cylinder is convenient to adjust; a working gap of a friction sheet can be adjusted, and an angle of a handle and the handfeel of a brake can be adjusted; therefore, the closed type adjustable oil brake upper pump is convenient to use by customers with different hand shapes. Compared with the generally used oil pressure disc brake, the closed type adjustable oil brake upper pump is more convenient to use, and the production cost is reduced to a certain extent.

Description

technical field [0001] The invention relates to a hydraulic disc brake used in bicycles, electric bicycles and motorcycles, referred to as a hydraulic disc brake for short. Background technique [0002] Bicycles, electric bicycles and motorcycles widely use hydraulic disc brakes, which are essential components of these vehicles. Due to design, structure and manufacturing reasons, the commonly used hydraulic disc brakes are prone to the following deficiencies: First, the current hydraulic disc brakes The upper pump of the upper pump is prone to oil leakage, the reason is that the upper pump of the open design hydraulic disc brake has two movable rubber sealing rings, these two sealing rings are constantly moving back and forth during operation, and are only separated from the outside by a simple An O-ring or a trumpet-shaped sealing ring, which is prone to oil leakage. The 2nd, the upper pump body is provided with an oil storage cup, and the oil storage cup has more communic...

AI Technical Summary

Problems solved by technology

[0002] Bicycles, electric bicycles and motorcycles widely use hydraulic disc brakes, which are essential components of these vehicles. Due to design, structure and manufacturing reasons, the commonly used hydraulic disc brakes are prone to the following shortcomings: First, the current hydraulic disc brakes The upper pump is easy to leak oil, the reason is that the upper pump of the open design hydraulic disc brake has two movable rubber sealing rings, these two sealing rings are constantly moving back and forth during work, and are only separated from the outside by a simple O-ring or a trumpet-shaped seal, which is prone to oil leakage

The second is that the upper pump body has an oil storage cup, and the oil storage cup has more connections with the outside world, so the sealing is difficult to guarantee

Third, it is difficult to adjust the gap between the friction plate and the disc of the open hydraulic disc brake lower pump

but slightly more complex in structure

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