CN203384252U - Air pressure assistance clutch pump assembly - Google Patents
Air pressure assistance clutch pump assembly Download PDFInfo
- Publication number
- CN203384252U CN203384252U CN201320456215.5U CN201320456215U CN203384252U CN 203384252 U CN203384252 U CN 203384252U CN 201320456215 U CN201320456215 U CN 201320456215U CN 203384252 U CN203384252 U CN 203384252U
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- Prior art keywords
- piston
- air pressure
- hydraulic
- cylinder
- valve piston
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model relates to an automobile assistance clutch system, in particular to an air pressure assistance clutch pump assembly. The air pressure assistance clutch pump assembly comprises a cylinder body, a push rod arranged on the cylinder body, a shell, a hydraulic cavity, a hydraulic piston and a cylinder piston, wherein the hydraulic piston and the cylinder piston are connected with the push rod in a linkage mode, an air valve piston is arranged between the push rod and the cylinder piston and provided with an air inlet, the hydraulic cavity of the shell is provided with an exhaust opening and a compensation hole, the hydraulic piston is provided with an exhaust channel communicated with the exhaust opening, the air valve piston is provided with an air inlet channel, an air pressure assistance cavity is arranged between the cylinder piston and the air valve piston, the air valve piston is provided with a connecting hole communicated with the air pressure assistance cavity, and an elastic switch component is arranged between the air valve piston and the hydraulic piston. The air pressure assistance clutch pump assembly can solve the problem of heavy clutch operation and can improve operation comfortableness.
Description
Technical field
The utility model relates to a kind of power-assisted clutch system of automobile, particularly a kind of air pressure assisted clutch pump assembly.
Background technique
Along with the user is more and more higher to the requirement of trailer reversing travelling comfort, generally adopted air pressure assisted clutch slave cylinder on the large-tonnage vehicle, replaced common hydraulic cylinder type clutch slave cylinder in the past, basically improved the heavy problem of clutch pedal.But low-power section commercial car is the heavy problem of reaction clutch pedal also, assist type is handled in low-power section commercial car clutch at present two kinds: a. hydraulic braked vehicle starts to adopt vacuum servo clutch general pump structure; B. clutch pedal adopts the spring mechanical power-assisted, but the power-assisted DeGrain, and pedal is subject to the effect of spring force during loose clutch, and feel is very poor.The clutch of air brakes vehicles customer responsiveness is handled heavy, and owing to limited by assembly space, air pressure assisted clutch slave cylinder can't assemble, and can't realize clutch control system power-assisted.
Summary of the invention
The deficiency existed for prior art, the utility model provides a kind of air pressure assisted clutch pump assembly that clutch is handled heavy problem, improved operation comfort that solves.
For achieving the above object, the utility model provides following technological scheme: a kind of air pressure assisted clutch pump assembly, include cylinder body, be located at Boring mill to the push rod of a side and the housing of opposite side, be provided with hydraulic pressure cavity between housing and cylinder body, be provided with the cylinder piston that extends to the hydraulic piston in the cylinder body cavity volume and be connected with hydraulic piston between hydraulic pressure cavity and cylinder body, described hydraulic piston and cylinder piston and push rod are connected, be provided with return spring between cylinder piston and cylinder body, it is characterized in that: between described push rod and cylinder piston, be provided with valve piston, valve piston is provided with suction port, the hydraulic pressure cavity place of housing is provided with relief opening and compensate opening, hydraulic piston be provided with move to exhaust ports can with the exhaust passage of relief opening conducting, valve piston is provided with an end and suction port conducting, the gas-entered passageway that exhaust passage on the corresponding hydraulic piston of the other end arranges, be provided with air pressure assisted chamber between cylinder piston and valve piston, valve piston is provided with the attachment hole with this air pressure assisted chamber conducting, be provided with the elastic switch assembly that impels gas-entered passageway and exhaust passage conducting sealing and attachment hole and the conducting of air pressure assisted chamber or sealing between described valve piston and hydraulic piston.
Wherein, the elastic switch assembly includes air intake valve and the drain tap of being located between gas-entered passageway and exhaust passage, between drain tap and valve piston, is provided with Compress Spring.
Adopt technique scheme, the driver is in operating process, step on clutch plate, clutch plate and push rod are implemented interlock, now air pressure enters gas-entered passageway by the suction port on valve piston, air pressure overcomes the Compress Spring power in the elastic switch assembly, air intake valve is opened, drain tap is closed, impel air pressure to be entered in exhaust passage and air pressure assisted chamber by gas-entered passageway, air pressure implements to promote operation to cylinder piston and hydraulic piston, by hydropneumatic, clutch is implemented to drive, make driver's pushing down on the pedal gently also can implement the operation to clutch, solve low-power power section air-pressure brake vehicle clutch pedal and handled heavy problem, thereby reduced driver's fatigue strength, improved handling comfort.
The utility model further is set to: valve piston is arranged with dust-proof cover outward.
Adopt technique scheme, can to prevent that dust from entering into cylinder body interior and cause the operation of each parts smooth and easy not in setting like this.
Below in conjunction with accompanying drawing, the utility model is further described.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment;
The I section enlarged diagram that Fig. 2 is Fig. 1.
Embodiment
As Fig. 1, a kind of air pressure assisted clutch pump assembly shown in Fig. 2, include cylinder body 1, be located at the push rod 2 of the axial side of cylinder body 1 and the housing 3 of opposite side, be provided with hydraulic pressure cavity 31 between housing 3 and cylinder body 1, be provided with the hydraulic piston 4 extended in cylinder body cavity volume 11 and the cylinder piston 5 be connected with hydraulic piston 4 between hydraulic pressure cavity 31 and cylinder body 1, hydraulic piston 4 and cylinder piston 5 are connected with push rod 2, be provided with return spring 6 between cylinder piston 5 and cylinder body 1, be provided with valve piston 7 between push rod 2 and cylinder piston 5, valve piston 7 is provided with suction port 71, hydraulic pressure cavity 31 places of housing 3 are provided with relief opening 311 and compensate opening 312, hydraulic piston 4 be provided with move to relief opening 311 places can with the exhaust passage 41 of relief opening 311 conductings, valve piston 7 is provided with an end and suction port 71 conductings, the gas-entered passageway 72 that exhaust passage 41 on the corresponding hydraulic piston 4 of the other end arranges, be provided with air pressure assisted chamber 12 between cylinder piston 5 and valve piston 7, valve piston 7 is provided with the attachment hole 73 with these air pressure assisted chamber 12 conductings, be provided with the elastic switch assembly 8 that impels gas-entered passageway 72 and exhaust passage 41 conducting sealings and attachment hole 73 and 12 conductings of air pressure assisted chamber or sealing between valve piston 7 and hydraulic piston 4.In such scheme, the driver is in operating process, step on clutch plate, clutch plate and push rod 2 are implemented interlock, now air pressure enters gas-entered passageway 72 by the suction port 71 on valve piston 7, air pressure impels elastic switch assembly 8 to open, impel air pressure to be entered in exhaust passage 41 and air pressure assisted chamber 12 by gas-entered passageway 72, air pressure implements to promote operation to cylinder piston 5 and hydraulic piston 4, by hydropneumatic, clutch is implemented to drive, make driver's pushing down on the pedal gently also can implement the operation to clutch, solve low-power power section air-pressure brake vehicle clutch pedal and handled heavy problem, thereby reduced driver's fatigue strength, improved handling comfort.
In the utility model embodiment, elastic switch assembly 8 includes air intake valve 81 and the drain tap 82 of being located between gas-entered passageway 72 and exhaust passage 41, between drain tap 81 and valve piston 7, is provided with Compress Spring 83.In order to prevent dust from entering in cylinder body 1, cause the operation of each parts smooth and easy not, the outer dust-proof cover 9 that is arranged with of valve piston 7.
In the utility model embodiment, while realizing that in advance clutch separates: let slip the clutch, under the effect of pedaling force, push rod 2 promotes valve piston 7 and moves towards housing 3 directions, overcome the active force of Compress Spring 83, mobile certain stroke, close drain tap 82, backs down air intake valve 81, pressurized air is by suction port 71, gas-entered passageway 72 and air intake valve 81, enter air pressure assisted chamber 12, pressurized air promotes cylinder piston 5 and moves towards housing 3, thereby realizes air pressure assisted.Under push rod power and pressurized air active force, cylinder piston 5 moves towards housing 3 directions together with hydraulic piston 4, the volume of cylinder body cavity volume 11 diminishes gradually, unnecessary air is discharged by relief opening 311, along with hydraulic piston 4 moves and closes compensate opening 312 to housing 3 directions, brake fluid pressurized in hydraulic pressure cavity 31, form hydraulic energy, be delivered to clutch slave cylinder by oil pipe, realize that clutch separates.At push rod 2, in housing 3 direction moving process, stop arbitrary position, atmospheric pressure and hydraulic coupling will form an equinoctial point, and air intake valve 81 is closed, thereby realize air pressure assisted servo-actuated control function.
Realize in advance clutch in conjunction with the time: slowly pine is lifted clutch pedal, reverse housing 3 directions of push rod 2 move, valve piston 7 is closed air intake valve 81 under the effect of Compress Spring 83, open drain tap 82, the Partial shrinkage air is discharged atmosphere by exhaust passage 41 and relief opening 311, cylinder piston 5 and hydraulic piston 4 are in reverse to housing 3 directions and move under the effect of hydraulic coupling and return spring 83, with push rod 2 return slowly, drain tap 82 is opened fully, pressurized air is discharged, cylinder piston 5 returns, realize the clutch combination.In the reverse housing 3 direction moving process of push rod 2, arbitrary position stops, and atmospheric pressure and hydraulic coupling will form an equinoctial point, and drain tap 82 is closed, thereby realizes the servo-actuated control function of return process.
When air pressure assisted partial failure, push rod 2 promotes valve piston 7, cylinder piston 5 and hydraulic piston 4 and moves towards housing 3 directions together, can lean on driver's manpower to realize that clutch separates.
Claims (3)
1. an air pressure assisted clutch pump assembly, include cylinder body, be located at Boring mill to the push rod of a side and the housing of opposite side, be provided with hydraulic pressure cavity between housing and cylinder body, be provided with the cylinder piston that extends to the hydraulic piston in the cylinder body cavity volume and be connected with hydraulic piston between hydraulic pressure cavity and cylinder body, described hydraulic piston and cylinder piston and push rod are connected, be provided with return spring between cylinder piston and cylinder body, it is characterized in that: between described push rod and cylinder piston, be provided with valve piston, valve piston is provided with suction port, the hydraulic pressure cavity place of housing is provided with relief opening and compensate opening, hydraulic piston be provided with move to exhaust ports can with the exhaust passage of relief opening conducting, valve piston is provided with an end and suction port conducting, the gas-entered passageway that exhaust passage on the corresponding hydraulic piston of the other end arranges, be provided with air pressure assisted chamber between cylinder piston and valve piston, valve piston is provided with the attachment hole with this air pressure assisted chamber conducting, be provided with the elastic switch assembly that impels gas-entered passageway and exhaust passage conducting sealing and attachment hole and the conducting of air pressure assisted chamber or sealing between described valve piston and hydraulic piston.
2. air pressure assisted clutch pump assembly according to claim 1, it is characterized in that: described elastic switch assembly includes air intake valve and the drain tap of being located between gas-entered passageway and exhaust passage, between drain tap and valve piston, is provided with Compress Spring.
3. air pressure assisted clutch pump assembly according to claim 1 and 2, it is characterized in that: described valve piston is arranged with dust-proof cover outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456215.5U CN203384252U (en) | 2013-07-29 | 2013-07-29 | Air pressure assistance clutch pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456215.5U CN203384252U (en) | 2013-07-29 | 2013-07-29 | Air pressure assistance clutch pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384252U true CN203384252U (en) | 2014-01-08 |
Family
ID=49872748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320456215.5U Expired - Fee Related CN203384252U (en) | 2013-07-29 | 2013-07-29 | Air pressure assistance clutch pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384252U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443356A (en) * | 2018-04-28 | 2018-08-24 | 芜湖稳乐制动系统有限公司 | Clutch power-assisted master cylinder |
| CN109011115A (en) * | 2018-09-10 | 2018-12-18 | 科塞尔医疗科技（苏州）有限公司 | A kind of balloon dilatation pressure pump |
| CN109555795A (en) * | 2017-09-25 | 2019-04-02 | 郑州宇通客车股份有限公司 | Clutch servo-cylinder and on-off control mechanism |
-
2013
- 2013-07-29 CN CN201320456215.5U patent/CN203384252U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555795A (en) * | 2017-09-25 | 2019-04-02 | 郑州宇通客车股份有限公司 | Clutch servo-cylinder and on-off control mechanism |
| CN109555795B (en) * | 2017-09-25 | 2024-04-26 | 宇通客车股份有限公司 | Clutch booster cylinder and clutch operating mechanism |
| CN108443356A (en) * | 2018-04-28 | 2018-08-24 | 芜湖稳乐制动系统有限公司 | Clutch power-assisted master cylinder |
| CN109011115A (en) * | 2018-09-10 | 2018-12-18 | 科塞尔医疗科技（苏州）有限公司 | A kind of balloon dilatation pressure pump |
| CN109011115B (en) * | 2018-09-10 | 2023-12-26 | 科塞尔医疗科技（苏州）有限公司 | Saccule expansion pressure pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 |