CN201615152U - Center valve type clutch master cylinder assembly - Google Patents

Center valve type clutch master cylinder assembly Download PDF

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Publication number
CN201615152U
CN201615152U CN2010200498226U CN201020049822U CN201615152U CN 201615152 U CN201615152 U CN 201615152U CN 2010200498226 U CN2010200498226 U CN 2010200498226U CN 201020049822 U CN201020049822 U CN 201020049822U CN 201615152 U CN201615152 U CN 201615152U
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CN
China
Prior art keywords
master cylinder
piston
hole
clutch master
rubber valve
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 - Lifetime
Application number
CN2010200498226U
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Chinese (zh)
Inventor
陈集
蔡微微
叶元平
兰小军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DONGQI AUTOMOBILE PARTS Manufacturing Co Ltd WENZHOU CITY
Original Assignee
DONGQI AUTOMOBILE PARTS Manufacturing Co Ltd WENZHOU CITY
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Publication date
Application filed by DONGQI AUTOMOBILE PARTS Manufacturing Co Ltd WENZHOU CITY filed Critical DONGQI AUTOMOBILE PARTS Manufacturing Co Ltd WENZHOU CITY
Priority to CN2010200498226U priority Critical patent/CN201615152U/en
Application granted granted Critical
Publication of CN201615152U publication Critical patent/CN201615152U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a center valve type clutch master cylinder assembly. The utility model mainly solves the problem that the sealing surface of a primary cup of the prior clutch master cylinder has high possibility of scratching, resulting in increased leakage of the braking liquid. The center valve type clutch master cylinder assembly is characterized in that an oil transfer channel is positioned outside the stroke of a primary cup and communicated with an outer cavity (7), and hole channels respectively communicated with an inner cavity (6) and the outer cavity (7) and a hole channel opening-closing device are respectively arranged on a piston (2). After improvement made on the prior art, the primary cup of the piston can not be damaged, and the clutch master cylinder assembly has the characteristics of reasonable structure, good sealing effect and long service life.

Description

Centre valve formula clutch master cylinder assembly
Technical field:
The utility model relates to a kind of auto parts and components, is specifically related to a kind of centre valve formula clutch master cylinder assembly.
Background technique:
The automobile clutch master cylinder is the device that motor and gearbox is temporarily separated and engage gradually, to cut off or to transmit the power of motor to the speed changer input.Employed clutch master cylinder in the present automobile clutch operating device, what adopt is piston cylinder operator, on the cylinder barrel sidewall of Master cylinder body, have oil subsidy and repaid passage, there is following defective in this structure: because this is crossed within the primary cup stroke range that oily passage is arranged on piston, piston advances each time or withdraws from primary cup and all can pass through oily passage, therefore the sealing surface of primary cup is easy to by scratch, occur poorly sealed, the leakage rate of brake fluid increases, and causes the fluid pressure that pushes in the clutch not enough and make clutch separation not thorough.
The model utility content:
The deficiency that is easily caused the leakage rate increase of hydraulic oil for the sealing surface that overcomes existing clutch master cylinder primary cup sidewall by scratch, the utility model provides a kind of centre valve formula clutch master cylinder assembly, this clutch master cylinder assembly is existing technical the improvement, do not damage the primary cup of piston, have the characteristics of rational in infrastructure, good sealing effect and long service life.
The technical solution of the utility model is: this centre valve formula clutch master cylinder assembly comprises Master cylinder body and piston, major and minor leather cup is installed on the piston, the sidewall of Master cylinder body is provided with the oily passage of the mistake that communicates with oil inlet pipe, the inside of Master cylinder body is divided into inside and outside chamber by primary cup, cross outside the stroke that oily passage is positioned at primary cup and with outer chamber and communicate, piston is provided with duct and the duct start-stop device that inside and outside chamber communicates.
Described middle of piston has the bar shaped groove, and the front end of piston has counterbore, between described bar shaped groove and the counterbore through hole is arranged, and counterbore, through hole and bar shaped groove form the duct that inside and outside chamber communicates; But be provided with the rubber valve of shutoff through hole and the resetting means of rubber valve in the counterbore, Master cylinder body is provided with a straight pin that passes described bar shaped groove, through hole is built-in with skeleton, between skeleton and the through hole space is arranged, the two ends of skeleton are corresponding with rubber valve and straight pin respectively, and the resetting means of rubber valve, rubber valve, skeleton and cylindrical pin shape become the duct start-stop device.
The resetting means of described rubber valve is made up of with back-up ring spring, spring seat and hole, and the hole is stuck in the inwall of counterbore with back-up ring, and the two ends of spring are enclosed within respectively on rubber valve and the spring seat.
The utlity model has following beneficial effect: owing to take such scheme, brake fluid can enter outer chamber through oily passage from oil inlet pipe, and then enter inner cavity chamber from the duct of internal piston, when piston inwardly advances, the duct of internal piston is closed, and has press-brake liquid to enter clutch working cylinder, when piston outwards is withdrawn into limit position, open in the duct at piston center, and brake fluid can enter the inner cavity chamber of Master cylinder body from outer chamber.Be positioned at outside the stroke of primary cup owing to cross oily passage, primary cup can not pass through oily passage when piston advances each time or withdraws from, and therefore can not damage the sealing surface of primary cup, the good sealing effect of primary cup and Master cylinder body, the long service life of primary cup.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model;
Accompanying drawing 2 is A place enlarged views among Fig. 1.
1-Master cylinder body among the figure, the 2-piston, the 3-primary cup, 4-secontary cup, 5-are crossed oily passage, 6-inner cavity chamber, the 7-outer chamber, 8-bar shaped groove, 9-counterbore, 10-through hole, 11-straight pin, 12-rubber valve, the 13-skeleton, 14-spring, 15-spring seat, 16-hole back-up ring, 17-oil inlet pipe.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, this centre valve formula clutch master cylinder assembly comprises Master cylinder body 1 and piston 2, major and minor leather cup (3 is installed on the piston 2,4), the sidewall of Master cylinder body 1 is provided with the oily passage 5 of the mistake that communicates with oil inlet pipe 17, and the inside of Master cylinder body 1 is divided into inside and outside chamber (6 by primary cup 3,7), cross outside the stroke that oily passage 5 is positioned at primary cup 3 and with outer chamber 7 and communicate, piston 2 is provided with duct and the duct start-stop device that inside and outside chamber (6,7) communicates.In use, brake fluid can enter outer chamber 7 through oily passage 5 from oil inlet pipe 17, and then enter inner cavity chamber 6 from the duct of piston 2 inside, when piston 2 inwardly advances, the duct of piston 2 inside is closed, and has press-brake liquid to enter clutch working cylinder, when piston 2 outwards is withdrawn into limit position, open in the duct of piston 2 inside, and brake fluid can enter the inner cavity chamber 6 of Master cylinder body 1 from outer chamber 7.Because crossing oily passage 5 is positioned at outside the stroke of primary cup 3, primary cup 3 can not pass through oily passage 5 when piston 2 advances each time or withdraws from, therefore can not damage the sealing surface on the primary cup 3, the good sealing effect of primary cup 3 and Master cylinder body 1, the long service life of primary cup 3.
By Fig. 1 in conjunction with shown in Figure 2, the middle part of described piston 2 has bar shaped groove 8, and the front end of piston 2 has counterbore 9, between described bar shaped groove 8 and the counterbore 9 through hole 10 is arranged, counterbore 9, through hole 10 and bar shaped groove 8 form the duct that inside and outside chamber (6,7) communicates; But be provided with the rubber valve 12 of shutoff through hole 10 and the resetting means of rubber valve 12 in the counterbore 9, Master cylinder body 1 is provided with a straight pin 11 that passes described bar shaped groove 8, through hole 10 is built-in with skeleton 13, between skeleton 13 and the through hole 10 space is arranged, the two ends of skeleton 13 are corresponding with rubber valve 12 and straight pin 11 respectively, and the resetting means of rubber valve 12, rubber valve 12, skeleton 13 and straight pin 11 form the duct start-stop device.When piston 2 inwardly advances, rubber valve 12 breaks away from skeleton 13, rubber valve 12 is shutoff through hole 10 under the effect of resetting means, inside and outside chamber (6,7) obstructed between, there is press-brake liquid to enter clutch working cylinder, when piston 2 outwards is withdrawn into limit position, rubber valve 12 is open under the effect of skeleton 13, and brake fluid can enter the inner cavity chamber 6 of Master cylinder body 1 from outer chamber 7.
In conjunction with shown in Figure 2, the resetting means of described rubber valve 12 is made up of with back-up ring 16 spring 14, spring seat 15 and hole by Fig. 1, and the hole is stuck in the inwall of counterbore 9 with back-up ring 16, and the two ends of spring 14 are enclosed within respectively on rubber valve 12 and the spring seat 15.Rubber valve 12 can shutoff through hole 10 under the elastic force of spring 14 and brake fluid effect.

Claims (3)

1. centre valve formula clutch master cylinder assembly, comprise Master cylinder body (1) and piston (2), major and minor leather cup (3 is installed on the piston (2), 4), the sidewall of Master cylinder body (1) is provided with the oily passage of mistake (5) that communicates with oil inlet pipe (17), the inside of Master cylinder body (1) is divided into inside and outside chamber (6 by primary cup (3), 7), it is characterized in that: cross outside the stroke that oily passage (5) is positioned at primary cup (3) and and communicate with outer chamber (7), piston (2) is provided with duct and the duct start-stop device that inside and outside chamber (6,7) communicates.
2. centre valve formula clutch master cylinder assembly according to claim 1, it is characterized in that: the middle part of piston (2) has bar shaped groove (8), the front end of piston (2) has counterbore (9), between described bar shaped groove (8) and the counterbore (9) through hole (10) is arranged, counterbore (9), through hole (10) and bar shaped groove (8) form the duct that inside and outside chamber (6,7) communicates; Counterbore (9) but in be provided with the rubber valve (12) of shutoff through hole (10) and the resetting means of rubber valve (12), Master cylinder body (1) is provided with a straight pin (11) that passes described bar shaped groove (8), through hole (10) is built-in with skeleton (13), between skeleton (13) and the through hole (10) space is arranged, the two ends of skeleton (13) are corresponding with rubber valve (12) and straight pin (11) respectively, and the resetting means of rubber valve (12), rubber valve (12), skeleton (13) and straight pin (11) form the duct start-stop device.
3. centre valve formula clutch master cylinder assembly according to claim 2, it is characterized in that: the resetting means of described rubber valve (12) is made up of with back-up ring (16) spring (14), spring seat (15) and hole, the hole is stuck in the inwall of counterbore (9) with back-up ring (16), and the two ends of spring 14 are enclosed within respectively on rubber valve (12) and the spring seat (15).
CN2010200498226U 2010-01-05 2010-01-05 Center valve type clutch master cylinder assembly Expired - Lifetime CN201615152U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010200498226U CN201615152U (en) 2010-01-05 2010-01-05 Center valve type clutch master cylinder assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010200498226U CN201615152U (en) 2010-01-05 2010-01-05 Center valve type clutch master cylinder assembly

Publications (1)

Publication Number Publication Date
CN201615152U true CN201615152U (en) 2010-10-27

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Application Number Title Priority Date Filing Date
CN2010200498226U Expired - Lifetime CN201615152U (en) 2010-01-05 2010-01-05 Center valve type clutch master cylinder assembly

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364150A (en) * 2011-09-24 2012-02-29 芜湖众发汽车制动系统有限公司 Dual piston brake main cylinder with extending type oil feeding joints and oil supplementing ring
CN102506103A (en) * 2011-10-27 2012-06-20 芜湖众发汽车制动系统有限公司 Braking main cylinder provided with oil cup assembly, operating rod assembly and center valve
CN104421355A (en) * 2013-08-26 2015-03-18 通用汽车环球科技运作有限责任公司 Damper valve used for clutch
CN105202062A (en) * 2015-10-29 2015-12-30 安徽江淮汽车股份有限公司 Oil cup cap fixing mechanism of clutch master cylinder and clutch master cylinder
CN109578458A (en) * 2018-10-26 2019-04-05 余姚鑫仕达汽车部件有限公司 A kind of clutch master cylinder
CN112572384A (en) * 2020-12-28 2021-03-30 芜湖盛力科技股份有限公司 Double-cavity booster of engineering machinery braking system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364150A (en) * 2011-09-24 2012-02-29 芜湖众发汽车制动系统有限公司 Dual piston brake main cylinder with extending type oil feeding joints and oil supplementing ring
CN102506103A (en) * 2011-10-27 2012-06-20 芜湖众发汽车制动系统有限公司 Braking main cylinder provided with oil cup assembly, operating rod assembly and center valve
CN104421355A (en) * 2013-08-26 2015-03-18 通用汽车环球科技运作有限责任公司 Damper valve used for clutch
CN104421355B (en) * 2013-08-26 2018-09-14 通用汽车环球科技运作有限责任公司 Damped valve for clutch
CN105202062A (en) * 2015-10-29 2015-12-30 安徽江淮汽车股份有限公司 Oil cup cap fixing mechanism of clutch master cylinder and clutch master cylinder
CN109578458A (en) * 2018-10-26 2019-04-05 余姚鑫仕达汽车部件有限公司 A kind of clutch master cylinder
CN109578458B (en) * 2018-10-26 2020-10-16 余姚鑫仕达汽车部件有限公司 Clutch master cylinder
CN112572384A (en) * 2020-12-28 2021-03-30 芜湖盛力科技股份有限公司 Double-cavity booster of engineering machinery braking system

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C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Center valve type clutch master cylinder assembly

Effective date of registration: 20111110

Granted publication date: 20101027

Pledgee: Dongtou County Rural Credit Cooperative Association

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2011990000422

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20130628

Granted publication date: 20101027

Pledgee: Dongtou County Rural Credit Cooperative Association

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2011990000422

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Center valve type clutch master cylinder assembly

Effective date of registration: 20130628

Granted publication date: 20101027

Pledgee: Dongtou County Rural Credit Cooperative Association

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2013990000413

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20140729

Granted publication date: 20101027

Pledgee: Dongtou County Rural Credit Cooperative Association

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2013990000413

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Center valve type clutch master cylinder assembly

Effective date of registration: 20140730

Granted publication date: 20101027

Pledgee: Dongtou County Rural Credit Cooperative Association

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2014990000619

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20160912

Granted publication date: 20101027

Pledgee: Wenzhou rural credit cooperative association of Zhejiang, Dongtou

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2014990000619

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Center valve type clutch master cylinder assembly

Effective date of registration: 20160912

Granted publication date: 20101027

Pledgee: Wenzhou rural credit cooperative association of Zhejiang, Dongtou

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2016990000786

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Date of cancellation: 20180824

Granted publication date: 20101027

Pledgee: Zhejiang Dongtou Wenzhou rural commercial bank Limited by Share Ltd

Pledgor: Dongqi Automobile Parts Mfg. Co. Ltd., Wenzhou City

Registration number: 2016990000786

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PM01 Change of the registration of the contract for pledge of patent right

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Granted publication date: 20101027