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A pneumatic booster control valve assembly and a pneumatic booster

A technology for controlling valve assembly and booster, applied in the field of hydraulic braking, can solve the problems of poor adaptability, increased cost, increased size, etc., and achieves the effect of reducing production cost and simple structure

Active Publication Date: 2022-04-05
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing pneumatic booster has poor adaptability to different tonnage vehicles. Generally, it is necessary to adjust the booster air pressure value by setting a pressure limiting valve in the brake pipeline or changing the size of the pneumatic booster, resulting in a complex structure of the braking system. Increased size, increased cost

Method used

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  • A pneumatic booster control valve assembly and a pneumatic booster
  • A pneumatic booster control valve assembly and a pneumatic booster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, this embodiment provides a pneumatic booster control valve assembly, including a valve body 1 , a valve assembly 2 , an air intake seat 3 , a booster piston assembly 4 and a booster transmission assembly 5 .

[0043] The valve 21 includes a diaphragm 11 disposed therein. The partition 11 divides the inner chamber of the valve 21 into two chambers on either side thereof. An air inlet 111 is disposed on the partition 11 . The valve assembly 2 and the air intake seat 3 are respectively arranged on two sides of the partition 11 .

[0044] A high-pressure air cavity 10 is formed between the valve assembly 2 and the partition plate 11 . When the vehicle is in an unbraked state, high-pressure air enters the high-pressure air chamber 10 , and the valve assembly 2 blocks the air inlet 111 , and the valve assembly 2 is in a closed state to prevent the high-pressure air from entering the booster air chamber 20 .

[0045] The intake seat 3 is partiall...

Embodiment 2

[0061] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the power-assisted transmission assembly 5 includes a guide block 51 and a first spring 53 and a second spring 54 arranged inside and outside, that is, the first spring 53 and the second spring 54 arranged inside and outside are adopted. Spring 54 is used instead of rubber spring 52.

[0062] The guide block 51 is movably arranged in the air intake seat 3 . Both ends of the first spring 53 abut against the guide block 51 and the booster piston assembly 4 respectively. The second spring 54 is located between the guide block 51 and the booster piston assembly 4 .

[0063] When the vehicle is in an unbraked state, both ends of the first spring 53 abut against the guide block 51 and the piston 41 respectively. The first spring 53 presses the guide block 51 against the second stop ring 72 , and at this time the second spring 54 is in a free state, that is, the second spring 54 has ...

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Abstract

The invention relates to the technical field of hydraulic braking, and discloses a pneumatic booster control valve assembly and a pneumatic booster. The control valve assembly includes: a valve body, including a baffle installed therein; the valve assembly is arranged in the valve body and is located on one side of the baffle, and a high-pressure air cavity is formed between the valve assembly and the baffle, and the valve assembly can seal Block the intake hole; the intake seat is partially nested in the valve body and located on the other side of the partition; the booster piston assembly is located in the valve body and is located between the intake seat and the partition, and the booster piston assembly and the partition form a The booster air chamber; the booster transmission assembly can be movably arranged in the intake seat to drive the booster piston assembly to push the valve assembly; the limit assembly is set between the intake seat and the booster transmission component to limit the maximum stroke of the booster transmission component . The pneumatic booster includes the aforementioned pneumatic booster control valve assembly. The limit component limits the maximum stroke of the booster transmission component, and then controls the maximum stroke of the booster piston component, which is suitable for vehicles of different tonnages.

Description

technical field [0001] The invention relates to the technical field of hydraulic braking, in particular to a control valve assembly of a pneumatic booster and a pneumatic booster. Background technique [0002] Pneumatic booster is a mechanism that uses compressed air as a power source to generate power in hydraulic brakes that use working oil as the transmission medium to improve braking efficiency and driving safety. [0003] The existing pneumatic booster has poor adaptability to different tonnage vehicles. Generally, it is necessary to adjust the booster air pressure value by setting a pressure limiting valve in the brake pipeline or changing the size of the pneumatic booster, resulting in a complex structure of the braking system. As size increases, cost increases. Contents of the invention [0004] The object of the present invention is to provide a pneumatic booster control valve assembly and a pneumatic booster, which can be adapted to vehicle models of different t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T15/36B60T13/24
CPCB60T15/36B60T13/24
Inventor 李同占封万程李林儒巨建辉
Owner FAW JIEFANG AUTOMOTIVE CO