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Hydraulic booster assembly device with pre-filling function

A technology of hydraulic boosting and pre-charging, applied in brake transmission, brake, transportation and packaging, etc., can solve the problems of large total idle stroke and affect pedal feel, etc., to reduce idle stroke, compact structure, and increase power stroke. Effect

Pending Publication Date: 2019-08-27
广州电通博华汽车制动系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the braking process of the traditional hydraulic booster, it must first overcome the empty stroke of the hydraulic booster itself, and then overcome the empty stroke of the brake master cylinder. The total empty stroke is relatively large, which affects the pedal feel

Method used

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  • Hydraulic booster assembly device with pre-filling function

Examples

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Embodiment 1

[0032] Such as Figure 1-2 As shown, this embodiment provides a hydraulic booster assembly with a pre-charging function, including:

[0033] The main cylinder housing 1.5 includes two cylinder holes with different diameters in the middle. The diameter of the front cylinder hole is smaller than that of the rear cylinder hole. The front cylinder hole is connected with an oil return hole H1, and the rear cylinder hole is connected with a high hydraulic pressure The liquid inlet P1 has a mounting hole behind the cylinder hole at the rear end, which is used to install the seal seat 1.6, and there is a brake master cylinder mounting hole in front of the cylinder hole at the front end, which is connected to the brake master cylinder assembly;

[0034] The booster piston assembly is arranged in the above-mentioned two sections of the cylinder bore, and precisely cooperates with the inner cavity of the master cylinder housing 1.5 to form a high-pressure chamber, and is limited by the s...

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Abstract

The invention relates to the technical field of booster devices applied to an automobile braking system, in particular to a hydraulic booster assembly device with a pre-filling function. A pre-fillingmechanism with the pre-filling function is added on the basis of a traditional hydraulic booster assembly device, the pre-filling mechanism includes a pre-filling piston, high hydraulic pressure doesnot directly push a power assisting piston to move to achieve power assistance, but firstly pressure is prefilled to the pre-filling piston to push a braking main cylinder, and empty travel of the braking main cylinder is eliminated; after the pre-filling piston moves to the pre-filled travel, the booster piston assembly starts to move to ensure continuous pressure of the braking main cylinder. According to the hydraulic booster assembly device with the pre-filling function, the empty travel of the hydraulic booster assembly is effectively reduced, the brake foot sense is greatly improved; available power assisting travel is increased, the structure is more compact and the requirements of different travel can be met to be matched with the braking main cylinder; and at the same time, basicbraking characteristics remain unchanged and can be applied to braking power assistance of the whole system.

Description

technical field [0001] The invention relates to the technical field of booster devices applied to automobile braking systems, in particular to a hydraulic booster assembly device with a pre-charging function. Background technique [0002] The hydraulic booster is a hydraulically assisted servo device and is used in conjunction with the car brake device. Its working principle is to control the pressure input of the attached high hydraulic energy storage device by controlling the structure of the mechanical slide valve, and then push the booster piston of the hydraulic booster to move, thereby pushing the piston of the brake master cylinder assembly to realize the construction of the brake master cylinder. pressure, and output pressure to the brake actuator of the vehicle through the oil outlet of the brake master cylinder to achieve braking. [0003] During the braking process of the traditional hydraulic booster, it must first overcome the empty stroke of the hydraulic boos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/12B60T13/14
CPCB60T13/12B60T13/148
Inventor 刘培温佐礼蓝科技
Owner 广州电通博华汽车制动系统有限公司
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