CN202719045U - Cylinder-diameter-changing clutch main pump - Google Patents
Cylinder-diameter-changing clutch main pump Download PDFInfo
- Publication number
- CN202719045U CN202719045U CN 201220322194 CN201220322194U CN202719045U CN 202719045 U CN202719045 U CN 202719045U CN 201220322194 CN201220322194 CN 201220322194 CN 201220322194 U CN201220322194 U CN 201220322194U CN 202719045 U CN202719045 U CN 202719045U
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- China
- Prior art keywords
- main pump
- piston
- diameter
- cylinder body
- clutch
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- Expired - Fee Related
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Abstract
The utility model relates to the automobile field, in particular to an automobile clutch part. A cylinder-diameter-changing clutch main pump comprises a main pump cylinder body, a piston, a return spring and an ejector rod, wherein the piston is arranged in the main pump cylinder body, the return spring is connected with the front end of the piston, the ejector rod is connected with the rear end of the piston, front sealing oil seal is arranged between the front end of the piston and the inner wall of the main pump cylinder body, rear sealing oil seal is arranged between the rear end of the piston and the outer wall of the main pump cylinder body, the piston is a step-type piston, the diameter of the front end of the piston is smaller than that of the rear end of the piston, and the cylinder diameter of the front end in the main pump cylinder body is smaller than that of the rear end in the main pump cylinder body. The work principle of the clutch main pump is that the cylinder diameter of the corresponding clutch main pump is reduced when the separating force reaches a peak according to corresponding relation of clutch separating force and separating stroke, compared with an original main pump with the fixed cylinder diameter, the area of a hydraulic section on the diameter-changing portion of the main pump is reduced, and lever of a clutch separating system is increased at the time to lower manipulation force.
Description
Technical field
The utility model relates to automotive field, relates in particular to a kind of automobile clutch parts.
Background technique
Clutch is the constituent element of automotive transmission, is contained between motor and the speed changer.When vehicle starting or shift of transmission, it temporarily separates reasonable match, to interrupt transmission of power, makes it again subsequently to engage gradually, so that transferring power.In vehicle traveling process, the driver can step on or release the clutch pedal as required, motor and gearbox are temporarily separated and engages gradually, to cut off or to transmit motor to the power of speed changer input.The clutch main pump refers to be applied in the main pump in the clutch hydraulic pressure separation control system, and the selection of clutch main pump cylinder diameter and clutch slave cylinder cylinder diameter plays vital effect to power and the stroke of clutch operating system.As shown in Figure 1, the cylinder diameter of clutch main pump is fixed cylinder diameter at present, can't carry out local power-assisted adjustment to clutch control power, this is for the vehicle of joining high power engine, cylinder diameter coupling has certain limitation, and clutch-pedal load can be larger, to handling certain influence is arranged.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of change cylinder diameter clutch main pump, this main pump adopts stair-stepping piston, comes for the vehicle of joining high power engine, behind the suitable master cylinder cylinder diameter of coupling, can further reduce maximum pedaling force, satisfy the needs of human engineering.
The utility model is achieved in that a kind of change cylinder diameter clutch main pump, comprise main pump cylinder body, piston, return spring and push rod, described piston is arranged in the main pump cylinder body, described return spring links to each other with the front end of piston, described push rod links to each other with the rear end of piston, be provided with front hermetic oil seal between the front end of piston and the main pump inboard wall of cylinder block, be provided with rear hermetic oil seal between the rear end of piston and the main pump inboard wall of cylinder block, described piston is the cascade piston, the diameter of piston nose is less than the diameter of piston rear end, and the front end cylinder diameter of described main pump cylinder body is less than the rear end cylinder diameter.
Described main pump cylinder body front end cylinder diameter is 90% ~ 98% of main pump rear end of the cylinder block cylinder diameter.
The utility model becomes cylinder diameter clutch main pump and adopts stair-stepping piston, its working principle is the corresponding relation according to clutch separation power and release travel coupling, when Separating force reaches the peak, change corresponding clutch main pump cylinder diameter herein little, hermetic oil seal on the piston changes according to cylinder diameter and carries out corresponding deformation, compare original fixedly main pump of cylinder diameter, this main pump reducing place hydraulic pressure section area diminishes, increase clutch release system lever ratio this moment, general cylinder diameter reduction volume is no more than 8%, and theory can reduce maximum steering force about 7%.
Description of drawings
Fig. 1 is existing clutch Structure of RCP schematic representation;
Fig. 2 is that the utility model becomes cylinder diameter clutch Structure of RCP schematic representation.
Among the figure: 1 main pump cylinder body, 2 pistons, 3 return springs, 4 push rods, 5 front hermetic oil seals, 6 rear hermetic oil seals.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments only are used for explanation the utility model and are not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 2, a kind of change cylinder diameter clutch main pump, comprise main pump cylinder body 1, piston 2, return spring 3 and push rod 4, described piston 2 is arranged in the main pump cylinder body 1, described return spring 3 links to each other with the front end of piston 2, described push rod 4 links to each other with the rear end of piston 2, be provided with front hermetic oil seal 5 between the front end of piston 2 and main pump cylinder body 1 inwall, be provided with rear hermetic oil seal 6 between the rear end of piston 2 and main pump cylinder body 1 inwall, described piston 2 is the cascade piston, the diameter of piston 2 front ends is less than the diameter of piston 2 rear ends, and the front end cylinder diameter of described main pump cylinder body 1 is less than the rear end cylinder diameter.
Owing to be subject to oil sealing distortion quantitative limitation, excessive cylinder diameter variable quantity can cause the piston operation to be obstructed in the utility model, and described main pump cylinder body 1 front end cylinder diameter is 90% ~ 98% of main pump cylinder body 1 rear end cylinder diameter.
Claims (2)
1. one kind becomes cylinder diameter clutch main pump, comprise main pump cylinder body (1), piston (2), return spring (3) and push rod (4), described piston (2) is arranged in the main pump cylinder body (1), described return spring (3) links to each other with the front end of piston (2), described push rod (4) links to each other with the rear end of piston (2), be provided with front hermetic oil seal (5) between the front end of piston (2) and main pump cylinder body (1) inwall, be provided with rear hermetic oil seal (6) between the rear end of piston (2) and main pump cylinder body (1) inwall, it is characterized in that: described piston (2) is the cascade piston, the diameter of piston (2) front end is less than the diameter of piston (2) rear end, and the front end cylinder diameter of described main pump cylinder body (1) is less than the rear end cylinder diameter.
2. change cylinder diameter clutch main pump as claimed in claim 1, it is characterized in that: described main pump cylinder body (1) front end cylinder diameter is 90% ~ 98% of main pump cylinder body (1) rear end cylinder diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322194 CN202719045U (en) | 2012-07-05 | 2012-07-05 | Cylinder-diameter-changing clutch main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322194 CN202719045U (en) | 2012-07-05 | 2012-07-05 | Cylinder-diameter-changing clutch main pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719045U true CN202719045U (en) | 2013-02-06 |
Family
ID=47620869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322194 Expired - Fee Related CN202719045U (en) | 2012-07-05 | 2012-07-05 | Cylinder-diameter-changing clutch main pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870593A (en) * | 2017-04-13 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | The Clutch main cylinder of variable cross section product |
| CN113565894A (en) * | 2021-07-22 | 2021-10-29 | 安徽江淮汽车集团股份有限公司 | Clutch master cylinder assembly and vehicle |
-
2012
- 2012-07-05 CN CN 201220322194 patent/CN202719045U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870593A (en) * | 2017-04-13 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | The Clutch main cylinder of variable cross section product |
| CN113565894A (en) * | 2021-07-22 | 2021-10-29 | 安徽江淮汽车集团股份有限公司 | Clutch master cylinder assembly and vehicle |
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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: 20130206 Termination date: 20190705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |