CN201494433U - Piston shaft of internal respiration brake chamber - Google Patents
Piston shaft of internal respiration brake chamber Download PDFInfo
- Publication number
- CN201494433U CN201494433U CN2009201978957U CN200920197895U CN201494433U CN 201494433 U CN201494433 U CN 201494433U CN 2009201978957 U CN2009201978957 U CN 2009201978957U CN 200920197895 U CN200920197895 U CN 200920197895U CN 201494433 U CN201494433 U CN 201494433U
- Authority
- CN
- China
- Prior art keywords
- hollow shaft
- valve seat
- shaft sleeve
- piston
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a piston shaft of an internal respiration brake chamber. The piston shaft is provided with a hollow shaft sheath; one end of the hollow shaft sheath is provided with a choke plug; and a one-way valve arranged in the hollow shaft sheath comprises a valve seat, a return spring and a valve core, wherein the valve seat is fixed in the hollow shaft sheath, a pore communicated with the open end of the hollow shaft sheath is formed at the bottom of the valve seat, a cavity capable of accommodating the valve core is arranged at the top of the valve seat, a through-hole formed on the cavity is communicated with an air hole formed on the hollow shaft sheath, and an axial clearance is formed between the excircle of the valve core and the cavity of the valve seat. The air hole, the through-hole, the axial clearance and the pore are communicated to form the respiration channel for the piston shaft and the return spring is arranged between the valve seat and the valve core. When the return spring is compressed, the valve core and the valve seat are in contact to block the respiration channel. By adopting the utility model, when the parking cavity of the brake chamber runs, the gas in the parking cavity can be compensated and discharged, at the same time, the gas exchange between the traveling cavity and the parking cavity can be avoided, so that the brake security of the vehicle can be guaranteed.
Description
[technical field]
The utility model relates to a kind of internal respiration formula brake application by spring air chamber, and what be specifically related to is a kind of the axis of the piston of internal respiration formula brake application by spring air chamber.
[background technology]
What the compressed air brake cylinder of current mobility car adopted is external respiration formula brake application by spring air chamber, its shortcoming is the sewage in the atmosphere, silt can enter in the air chamber, influence the service life of respiratory cavity inner spring and diaphragm, therefore, a kind of internal respiration formula brake application by spring air chamber of internal respiration technology that adopts arises at the historic moment, and the key of internal respiration formula brake application by spring air chamber is whether the structure of its axis of the piston is reasonable, in the time of whether can working in compressed air brake cylinder Parking chamber, the Parking intracavity gas can access timely compensation and discharge, collaborating in simultaneously whether can prevent to drive a vehicle chamber and Parking chamber, guarantees the car brakeing safety.
[summary of the invention]
In view of the deficiencies in the prior art, the technical problems to be solved in the utility model is to be to provide a kind of simple in structure, when working in compressed air brake cylinder Parking chamber, the Parking intracavity gas can be compensated and discharge, collaborating in simultaneously can prevent to drive a vehicle chamber and Parking chamber, guarantees the internal respiration compressed air brake cylinder the axis of the piston of car brakeing safety.
The utility model takes following technical scheme to finish: a kind of internal respiration compressed air brake cylinder the axis of the piston, it is characterized in that: described the axis of the piston has hollow shaft sleeve, one end of hollow shaft sleeve has silently, be provided with check valve in the described hollow shaft sleeve, check valve comprises valve seat, retracing spring and spool, valve seat is fixed in the hollow shaft sleeve, the valve seat bottom is provided with the aperture that communicates with the hollow shaft sleeve open end, the valve seat top has the die cavity that can hold described spool, die cavity is provided with through hole, through hole communicates with pore on being located at described hollow shaft sleeve, has endplay between described spool cylindrical and the valve seat die cavity, described pore, through hole, endplay and aperture are connected, and form the respiration channel of described the axis of the piston; Described retracing spring is located between valve seat and the spool, and when retracing spring was compressed, spool contacted with valve seat, blocks being communicated with of described aperture and respiration channel.Described hollow shaft sleeve and silently be an integral structure.
The utility model is provided with respiration channel in the axis of the piston, respiration channel communicates with the Parking chamber by the hollow shaft sleeve open end at ordinary times, the pore that hollow shaft sleeve is provided with is in closed state, driving chamber and the stuffiness of Parking chamber, have only when work in compressed air brake cylinder Parking chamber, the axis of the piston action, the pore position that hollow shaft sleeve is provided with enters the driving chamber, the Parking intracavity gas driving chamber communicated, so can in time be compensated and discharge with the Parking chamber by respiration channel; When the pore that is provided with when hollow shaft sleeve enters enough big air pressure, act on pressure on the check valve spool and will overcome the spring force of retracing spring, spool contacts with valve seat, the blocking-up respiration channel, collaborating in prevent to drive a vehicle chamber and Parking chamber, guarantees the car brakeing safety; The hollow shaft sleeve of the axis of the piston and silently adopt the integral structure structure, not only simply but also can ensure the quality of products.
[description of drawings]
The utility model has following accompanying drawing:
Fig. 1 is the scheme of installation of the utility model in the internal respiration compressed air brake cylinder
Fig. 2 is an enlarged diagram of the present utility model among Fig. 1
[specific embodiment]
With reference to accompanying drawing 2, the utlity model has hollow shaft sleeve 8, one end of hollow shaft sleeve 8 has silently, hollow shaft sleeve 8 and silently be an integral structure, be provided with check valve in the described hollow shaft sleeve 8, check valve comprises valve seat 13, retracing spring 19 and spool 17, valve seat 13 is fixed in the hollow shaft sleeve 8 with back-up ring 12 by the hole, be provided with seal ring 18 between valve seat 13 cylindricals and hollow shaft sleeve 8 endoporus, described valve seat 13 bottoms are provided with the aperture 11 that communicates with hollow shaft sleeve 8 open ends, valve seat 13 tops have the die cavity that can hold described spool 17, the die cavity top is provided with through hole 16, and through hole 16 communicates with pore 15 on being located at described hollow shaft sleeve 8, has endplay 14 between described spool 17 cylindricals and valve seat 13 die cavities, described pore 15, through hole 16, endplay 14 and aperture 11 are connected, and form the respiration channel of described the axis of the piston; Be provided with described retracing spring 19 between valve seat 13 and the spool 17, when retracing spring 19 was compressed, spool 13 contacted with valve seat 17, blocked being communicated with of described aperture 11 and respiration channel.
With reference to accompanying drawing 1, the utility model (the axis of the piston) is located in the internal respiration compressed air brake cylinder, the internal respiration compressed air brake cylinder comprises housing 2 and diaphragm 5, housing 2 is spaced intermediate, the left half of housing is separated by described diaphragm 5, diaphragm 5 left sides are Parking chamber 4, be provided with brake spring 3 in the Parking chamber 4, chamber 6 is pressed for storage in diaphragm 5 right sides, the right part of housing is divided into driving chamber 7, the housing intermediate hsg is provided with piston hole, the axis of the piston is located in the piston hole, and described hollow shaft sleeve 8 and piston hole sliding block joint are provided with three seals circle 9 between the cylindrical of hollow shaft sleeve 8 and the piston hole, the pore 15 that hollow shaft sleeve 8 is provided with is between the two seals circle 9 on the right, this pore 15 does not communicate with described driving chamber 7, and the chamber 7 of promptly driving a vehicle does not communicate with the respiration channel of described the axis of the piston, and the open end of hollow shaft sleeve 8 (left end) and described diaphragm 5 and the push rod 1 that passes described housing 2 left end through holes are captiveed joint, the open end of hollow shaft sleeve 8 communicates with described Parking chamber 4, and promptly the respiration channel of Parking chamber 4 described the axis of the pistons communicates.
It is such having internal respiration compressed air brake cylinder working process of the present utility model: the respiration channel that is provided with in the axis of the piston communicates with Parking chamber 4 at ordinary times, does not communicate with driving chamber 7, driving chamber and the stuffiness of Parking chamber, when working in compressed air brake cylinder Parking chamber, push rod 1 promotes the axis of the piston action, pore 15 positions that hollow shaft sleeve 8 is provided with enter driving chamber 7, the Parking intracavity gas driving chamber 7 communicated, so can in time be compensated and discharge with Parking chamber 4 by respiration channel; When the pore that is provided with when hollow shaft sleeve enters enough big air pressure, act on pressure on the check valve spool and will overcome the spring force of retracing spring, spool contacts with valve seat, the blocking-up respiration channel, collaborating in prevent to drive a vehicle chamber and Parking chamber, guarantees the car brakeing safety.
Claims (2)
1. internal respiration compressed air brake cylinder the axis of the piston, it is characterized in that: described the axis of the piston has hollow shaft sleeve (8), one end of hollow shaft sleeve (8) has silently, described hollow shaft sleeve is provided with check valve in (8), check valve comprises valve seat (13), retracing spring (19) and spool (17), valve seat (13) is fixed in the hollow shaft sleeve (8), valve seat (13) bottom is provided with the aperture (11) that communicates with hollow shaft sleeve (8) open end, valve seat (13) top has the die cavity that can hold described spool (17), die cavity is provided with through hole (16), through hole (16) communicates with pore (15) on being located at described hollow shaft sleeve (8), has endplay (14) between described spool (17) cylindrical and valve seat (13) die cavity, described pore (15), through hole (16), endplay (14) and aperture (11) are connected, and form the respiration channel of described the axis of the piston; Described retracing spring (19) is located between valve seat (13) and the spool (17), and when retracing spring (19) when being compressed, spool (17) contacts with valve seat (13), blocks being communicated with of described aperture (11) and respiration channel.
2. a kind of internal respiration compressed air brake cylinder the axis of the piston as claimed in claim 1 is characterized in that: described hollow shaft sleeve (8) and silently be an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201978957U CN201494433U (en) | 2009-09-27 | 2009-09-27 | Piston shaft of internal respiration brake chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201978957U CN201494433U (en) | 2009-09-27 | 2009-09-27 | Piston shaft of internal respiration brake chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201494433U true CN201494433U (en) | 2010-06-02 |
Family
ID=42437641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201978957U Expired - Fee Related CN201494433U (en) | 2009-09-27 | 2009-09-27 | Piston shaft of internal respiration brake chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201494433U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011819A (en) * | 2010-10-29 | 2011-04-13 | 公主岭安宝有限责任公司 | Brake air chamber, brake system comprising same and motor vehicle |
| CN109305156A (en) * | 2018-09-30 | 2019-02-05 | 浙江万安科技股份有限公司 | EPB valve assembly and EPB electronic brake system with internal respiration structure |
| CN113819282A (en) * | 2021-08-23 | 2021-12-21 | 浙江工正机械有限公司 | Modular breather valve for spring brake chamber and spring brake chamber |
-
2009
- 2009-09-27 CN CN2009201978957U patent/CN201494433U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011819A (en) * | 2010-10-29 | 2011-04-13 | 公主岭安宝有限责任公司 | Brake air chamber, brake system comprising same and motor vehicle |
| CN109305156A (en) * | 2018-09-30 | 2019-02-05 | 浙江万安科技股份有限公司 | EPB valve assembly and EPB electronic brake system with internal respiration structure |
| CN113819282A (en) * | 2021-08-23 | 2021-12-21 | 浙江工正机械有限公司 | Modular breather valve for spring brake chamber and spring brake chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: RUIAN AUTO PARTS CO., LTD. OF RUILI GROUP Free format text: FORMER OWNER: JIANG WEIRONG Effective date: 20101009 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325200 ANYANG STREET, RUIAN CITY, ZHEJIANG PROVINCE ROOM 501, UNIT 1, BUILDING 7, QIAO RESIDENTIAL QUATER TO: 325200 NO.1169, YUMENG ROAD, RUIAN ECONOMIC DEVELOPMENT ZONE, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101009 Address after: 325200 Zhejiang Province Economic Development Zone Ruian Meng Lu No. 1169 Patentee after: Ruian Auto Parts Co., Ltd. of Ruili Group Address before: 325200 Zhejiang Province, Ruian city Anyang Street Bridge Yundang District 7 1 unit 501 room Patentee before: Jiang Weirong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20180927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |