CN202345667U - Brake cylinder with internal proportional valve - Google Patents
Brake cylinder with internal proportional valve Download PDFInfo
- Publication number
- CN202345667U CN202345667U CN2011204288965U CN201120428896U CN202345667U CN 202345667 U CN202345667 U CN 202345667U CN 2011204288965 U CN2011204288965 U CN 2011204288965U CN 201120428896 U CN201120428896 U CN 201120428896U CN 202345667 U CN202345667 U CN 202345667U
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- Prior art keywords
- piston
- valve
- steel ball
- cylinder body
- main piston
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- Expired - Fee Related
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Abstract
The utility model discloses a brake cylinder with an internal proportional valve, which comprises a cylinder body, wherein an oil chamber is formed in the cylinder body; the cylinder body is provided with an oil inlet and a vent hole, which are communicated with the oil chamber; the vent hole is obliquely arranged on the outer wall of the cylinder body; an auxiliary piston and a main piston are installed in the oil chamber; each of the auxiliary piston and the main piston is sleeved with a rubber ring; an elastic protective cover is respectively clamped on the rear end of the auxiliary piston and the front end of the main piston; a counterbore is formed in the main piston; a proportional valve and a small piston are installed in the counterbore; the small piston is provided with a step; a spring is padded between the step on the small piston and the bottom of the counterbore; a steel ball is positioned in the proportional valve; a small spring is padded between the steel ball and a valve chamber; and an L-shaped valve rod is arranged at the position of a valve core and is fixed to a steel ball. According to the utility model, a dustproof cover is arranged at the upper end of the piston, the leather ring is arranged on the side of the piston, and a dustproof plug is arranged in the oil inlet, therefore dust and air are prevented from entering the oil chamber, thereby ensuring that no problems are caused after the brake cylinder is used for a long time.
Description
Technical field
The utility model relates to brake pump field behind the automobile, relates in particular to a kind of brake cylinder of built-in apportioning valve.
Background technology
Brake cylinder is the indispensable part of brake system, and its significant feature is to push brake facing, and brake facing friction brake drum makes speed of a motor vehicle reduction and static.Step on brake back master cylinder generation thrust hydraulic oil is overwhelmed brake cylinder, under the pressure of pump housing piston, brake oil pipe is extruded oil pipe and makes braking function to each wheel cylinder diffluence.When the releasing of brake plate.Oil outlet in the master cylinder can be closed, and oil inlet is opened, and brake solution is back in the master cylinder from each wheel cylinder, gets back to virgin state.Brake cylinder structure in the past, its cylinder body are the structure design that the top directly has oil inlet mostly, and this kind structure does not have dust keeper, and long-term use lets dust and moisture get into cylinder body easily, causes faults such as seizure of piston and leakage of oil.Therefore imagination provides a kind of equipment to solve this problem.
The utility model content
The purpose of the utility model just provides a kind of built-in apportioning valve formula and divides pump assembly; Realized the oil pressure ratio control in the pump; Solve brake cylinder structure in the past, its cylinder body is the structure design that the top directly has oil inlet mostly, and this kind structure does not have dust keeper; Long-term use lets dust and moisture get into cylinder body easily, causes the problem of faults such as seizure of piston and leakage of oil.
For solving the problems of the technologies described above, the technical scheme of the utility model is following:
A kind of brake cylinder of built-in apportioning valve includes cylinder body, has the grease chamber in the described cylinder body, has the fuel feed hole and the bevelled air bleed hole that communicate with the grease chamber on the cylinder body; Auxiliary piston and main piston are installed in the described grease chamber, and auxiliary piston and main piston all are set with apron outward, and the rear end of auxiliary piston and main piston is installed with the elasticity protective cover respectively; Have counter sink in the described main piston, be slidingly fitted with valve piston, valve seat in the counter sink, valve piston is provided with step, is equipped with spring between at the bottom of the step on the valve piston and the hole of counter sink; The front end of valve piston has valve pocket, is placed with steel ball in the valve pocket, is equipped with little spring between steel ball and the valve pocket, has valve port, the oil outlet that communicates with valve pocket on valve seat, valve piston sidewall, the main piston sidewall, and valve port and steel ball are complementary.
In the described counter sink circlip for bore is installed; The described steel ball outside is supported with L shaped strut member, and strut member is fixed by circlip for bore.
Compared with prior art, the beneficial effect of the utility model is:
The utility model passes through in the piston upper end dust boot to be installed, and at the piston side sealing apron is installed, and the while is equipped with dust plug in oil inlet, can effectively prevent dust and air admission grease chamber; Oil pressure pressure is greater than the tension force of little spring in the grease chamber, and steel ball is moved to the left to block up and places valve piston sidewall oil outlet, and valve pocket promptly is closed, and has realized the oil pressure ratio control in the pump, has guaranteed that long-time use of brake cylinder can not go wrong yet.
Description of drawings
Fig. 1 is the integral structure scheme drawing of the utility model.
Fig. 2 is the part sectional view of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done further detailed explanation:
Referring to accompanying drawing, shown built-in apportioning valve formula brake cylinder includes cylinder body 1, has the grease chamber in the cylinder body, has the fuel feed hole 18 and air bleed hole 19 that communicate with the grease chamber on the cylinder body 1; Air bleed hole 19 is obliquely installed on outer wall of cylinder block; Auxiliary piston 2 and main piston 3 are installed in the grease chamber, all are set with apron 4 outside auxiliary piston 2 and the main piston 3, the front end of the rear end of auxiliary piston 2 and main piston 3 all is installed with elasticity protective cover 5; Have counter sink in the main piston 3, apportioning valve and valve piston 7 are installed in the counter sink, valve piston 7 is provided with step, at the bottom of the step on the valve piston 7 and the hole of counter sink between pad spring 9 is housed; Be placed with steel ball 10 in the apportioning valve, be equipped with little spring 11 between steel ball 10 and the valve pocket, spool 16 places are provided with L type valve rod 17 and steel ball fixed installation; Place, counter sink aperture is provided with circlip for bore 6; Dust plug 12 is installed in the fuel feed hole 18, elastic cylindrical pin 13, air bleed screw 14 and bleeder cap 15 are installed in the air bleed hole 19.
Claims (2)
1. the brake cylinder of a built-in apportioning valve includes cylinder body, it is characterized in that: have the grease chamber in the described cylinder body, have the fuel feed hole and the bevelled air bleed hole that communicate with the grease chamber on the cylinder body; Auxiliary piston and main piston are installed in the described grease chamber, and auxiliary piston and main piston all are set with apron outward, and the rear end of auxiliary piston and main piston is installed with the elasticity protective cover respectively; Have counter sink in the described main piston, be slidingly fitted with valve piston, valve seat in the counter sink, valve piston is provided with step, is equipped with spring between at the bottom of the step on the valve piston and the hole of counter sink; The front end of valve piston has valve pocket, is placed with steel ball in the valve pocket, is equipped with little spring between steel ball and the valve pocket, has valve port, the oil outlet that communicates with valve pocket on valve seat, valve piston sidewall, the main piston sidewall, and valve port and steel ball are complementary.
2. according to the brake cylinder of the described built-in apportioning valve of claim 1, it is characterized in that: in the described counter sink circlip for bore is installed; The described steel ball outside is supported with L shaped strut member, and strut member is fixed by circlip for bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204288965U CN202345667U (en) | 2011-11-03 | 2011-11-03 | Brake cylinder with internal proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204288965U CN202345667U (en) | 2011-11-03 | 2011-11-03 | Brake cylinder with internal proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202345667U true CN202345667U (en) | 2012-07-25 |
Family
ID=46534691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204288965U Expired - Fee Related CN202345667U (en) | 2011-11-03 | 2011-11-03 | Brake cylinder with internal proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202345667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442293A (en) * | 2011-11-03 | 2012-05-09 | 芜湖众发汽车制动系统有限公司 | Brake cylinder with internal proportional valve |
-
2011
- 2011-11-03 CN CN2011204288965U patent/CN202345667U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442293A (en) * | 2011-11-03 | 2012-05-09 | 芜湖众发汽车制动系统有限公司 | Brake cylinder with internal proportional valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20121103 |