Split piston type linkage brake valve and motorcycle

Abstract

The invention discloses a split piston type linkage brake valve and a motorcycle. The split piston type linkage brake valve comprises a valve body, a piston I and a piston II, wherein an inner cavity of the piston body is divided into a working cavity I and a working cavity II used for outputting hydraulic pressure and a driving cavity used for inputting the hydraulic pressure to drive the piston I and the piston II to axially move; the hydraulic pressure output from the working cavity I and the working cavity II respectively and correspondingly outputs brake force; and the piston I and the piston II are respectively provided with pretightening force opposite to the brake travel. The brake force is distributed by the two independent pistons and linkage is realized, the driving force of front and rear brakes can be prevented from being superposed so as not to lock the front wheel suddenly, the brake safety is improved, the brake force of a front-wheel brake component and a rear-wheel brake component can be reasonably distributed, the expected linkage effect is easily achieved, the response is sensitive and accurate, the attachment coefficient utilization rate is improved, the brake deceleration is increased, and the brake distance is shortened.

Description

technical field [0001] The invention relates to a motorcycle component and the motorcycle, in particular to a motorcycle braking safety accessory and the motorcycle. Background technique [0002] The braking system is an essential safety accessory for motorcycles, which ensures that the driver and passengers can control the motorcycle well and avoid safety accidents. Like other vehicles, a motorcycle includes a front wheel brake assembly and a rear wheel brake assembly. The front wheel brake assembly includes a front wheel brake and a front wheel brake drive transmission assembly, such as a zipper or a hydraulic cylinder assembly. The dynamic components include rear wheel brakes and front wheel brake drive transmission components; more brake drives are front wheel brake components and rear wheel brake components that act independently, and ordinary drivers cannot better distribute front wheel brakes when braking. The braking force of the moving component and the rear wheel ...

AI Technical Summary

Problems solved by technology

Like other vehicles, a motorcycle includes a front wheel brake assembly and a rear wheel brake assembly. The front wheel brake assembly includes a front wheel brake and a front wheel brake drive transmission assembly, such as a zipper or a hydraulic cylinder assembly. The dynamic components include rear wheel brakes and front wheel brake drive transmission components; more brake drives are front wheel brake components and rear wheel brake components that act independently, and ordinary drivers cannot better distribute front wheel brakes when braking. The braking force of the moving component and the rear wheel brake component is only based on subjective operation; therefore, it has the disadvantages of low utilization rate of adhesion coefficient, small braking deceleration, long braking distance, etc., especially in the braking process, it is prone to unreasonable distribution of braking force Safety accidents such as rollovers

[0003] In the prior art, in order to solve the above problems, a series of linkage braking devices have appeared; patent application 201110009654.7 discloses a motorcycle linkage braking device, which can realize the linkage braking operation of the front and rear wheels; the structure uses mechanical force to drive hydraulic pressure The cylinder realizes linkage braking. When the rider brakes the front and rear brakes at the same time, the braking force of the front wheels will be superimposed, causing the front wheels to suddenly lock and cause danger. The structure is equipped with a secondary hydraulic cylinder to realize the conversion of hydraulic pressure and mechanical , to achieve the purpose of linkage; in order to reasonably adjust and distribute the braking force, there are also delay valves and hydraulic suppression valves for adjusting the output of hydraulic pressure. The structure of the delay valve and the hydraulic suppression valve increases the volume of the equipment, and the response is not sensitive enough, it is difficult to achieve the desired effect, and it is easy to have deviations; at the same time, the linkage or independent braking in the prior art is completed by different equipment, not only The structure is complex and does not have the effect of proportional output. It needs to be combined with the subjective operation of the operator. It cannot distribute the braking force of the front and rear wheels well, and cannot adjust the proportional distribution relationship of the braking force of the front and rear wheels. Brake sensitivity And the accuracy is low, there are still problems of low adhesion coefficient utilization, small braking deceleration, and long braking distance

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