Brake master cylinder
A brake master cylinder and piston rod technology, applied in the direction of hydraulic brake transmission, etc., can solve the problems of easy wear and tear of O-shaped rubber ring, easy leakage of hydraulic oil, and shortening the service life of piston rod.
Inactive Publication Date: 2016-05-25
WUHU HENGKUN AUTO PARTS
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Problems solved by technology
In the traditional brake master cylinder, in order to ensure its internal sealing and prevent the internal hydraulic oil from leaking out when the brake master cylinder is working, there are multiple O-shaped rubber rings on the piston rod, but the O-shaped rubber rings and The friction force on the inner wall of the master cylinder is relatively large, and the O-shaped rubber ring is easy to wear and break after long-term friction. At this time, the hydraulic oil is easy to leak, and the piston rod will also have a large friction with the inner wall of the master cylinder, which greatly reduces the use of the piston rod. life, affecting the braking effect
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[0025] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0026] The present invention provides a brake master cylinder, wherein the brake master cylinder includes a cylinder body 12, and a piston rod device is slidably arranged in the cylinder body 12, and the piston rod device includes a sequentially connected first A piston rod 1 and a second piston rod 2, the end of the first piston rod 1 far away from the second piston rod 2 is connected to the inner wall of the cylinder body 12 through a return spring 10, and the end of the second piston rod 2 is far away from One end of the first piston rod 1 extends to the outside of the cylinder body 12, and the piston rod device also includes an annular elastic film 7, which ...
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The invention discloses a brake master cylinder. The brake master cylinder comprises a cylinder body, a piston rod device is slidably arranged in the cylinder body and comprises a first piston rod and a second piston rod which are sequentially connected, the end, far away from the second piston rod, of the first piston rod is connected with the inner wall of the cylinder body through a return spring, the end, far away from the first piston rod, of the second piston rod extends out of the cylinder body, the piston rod device further comprises an annular elastic membrane, the first piston rod is sleeved with the annular elastic membrane, and the outer round edge of the annular elastic membrane is fixed to the inner wall of the cylinder body. By means of the brake master cylinder, the problems that in a traditional brake master cylinder, the friction force between an O-shaped rubber ring arranged on a piston rod in a sleeving mode and the inner wall of the master cylinder is large, and the O-shaped rubber ring is fractured easily after long time of friction are solved.
Description
technical field [0001] The present invention relates to auto parts, in particular, to a brake master cylinder. Background technique [0002] The main function of the brake master cylinder is to promote the transmission of brake fluid (or gas) to each brake cylinder. In the traditional brake master cylinder, in order to ensure its internal sealing and prevent the internal hydraulic oil from leaking out when the brake master cylinder is working, there are multiple O-shaped rubber rings on the piston rod, but the O-shaped rubber rings and The friction force on the inner wall of the master cylinder is relatively large, and the O-shaped rubber ring is easy to wear and break after long-term friction. At this time, the hydraulic oil is easy to leak, and the piston rod will also have a large friction with the inner wall of the master cylinder, which greatly reduces the use of the piston rod. life, affect the braking effect. [0003] Therefore, it is an urgent problem to be solved ...
Claims
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IPC IPC(8): B60T11/16
CPCB60T11/16
Inventor 夏坤财余晓炜
Owner WUHU HENGKUN AUTO PARTS