A piston reverse auxiliary thrust mechanism for a brake air booster

By setting an intake duct inside the cylinder block, the piston can generate reverse auxiliary thrust, which solves the problem of modifying the outside of the cylinder block in the existing technology, simplifies the structural design, and improves the stability and reliability of the brake booster.

CN224323973UActive Publication Date: 2026-06-05YUEQING HONGDA AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YUEQING HONGDA AUTO PARTS CO LTD
Filing Date
2025-08-11
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

When the piston driving force of the existing brake booster is insufficient, the conventional method of connecting auxiliary gas to the outside of the cylinder requires modification of the cylinder appearance, resulting in installation and adaptation problems and structural complexity.

Method used

An intake duct is installed inside the cylinder block. Gas is introduced into the auxiliary cylinder block through the intake duct to push the push rod and piston to move, thereby achieving reverse auxiliary thrust and avoiding modification of the cylinder block appearance.

Benefits of technology

The simplified cylinder block design avoids external modifications, improves the stability and reliability of the mechanism, reduces the wear rate, and enhances the operational reliability of the braking system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224323973U_ABST
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Abstract

The utility model provides a kind of piston reverse auxiliary thrust mechanism of brake air booster, including main cylinder body, piston is equipped in main cylinder body, further include the left side intercommunication of main cylinder body's auxiliary cylinder body, push rod is equipped in auxiliary cylinder body, the right end of push rod is connected with piston, further include air inlet pipe, the right end of air inlet pipe is from the right side wall of main cylinder body and is fixedly connected with main cylinder body, the left end of air inlet pipe passes through piston and push rod and extends to the left end of the inner cavity of auxiliary cylinder body, piston and push rod are slidably connected with air inlet pipe. Its in main cylinder body and auxiliary cylinder body are provided with the air inlet pipe that through piston and push rod, gas enters auxiliary cylinder body by air inlet pipe and pushes push rod and piston to move, so that the gas that air inlet pipe enters cooperates with the gas that enters auxiliary cylinder body by other ways and pushes push rod and piston to move.
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