CN201973137U - Clutch master cylinder - Google Patents
Clutch master cylinder Download PDFInfo
- Publication number
- CN201973137U CN201973137U CN2011200429555U CN201120042955U CN201973137U CN 201973137 U CN201973137 U CN 201973137U CN 2011200429555 U CN2011200429555 U CN 2011200429555U CN 201120042955 U CN201120042955 U CN 201120042955U CN 201973137 U CN201973137 U CN 201973137U
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- master cylinder
- piston
- clutch master
- valve
- ring
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- Expired - Fee Related
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model relates to the field of automobile clutches, and aims to provide a clutch master cylinder, which is low in processing cost and longer in service life, and is provided with a primary cup not easy to wear. The clutch master cylinder comprises a cylinder, a piston in the cylinder and an on-off valve; an operating cavity is formed between the cylinder and the left end of the piston; a concave ring is arranged on the periphery of the piston; a liquid inlet cavity is formed between the cylinder and the concave ring; the outside of the cylinder is provided with an oil inlet and an oil outlet; the oil inlet is communicated with the liquid inlet cavity; the oil outlet is communicated with the operating cavity; and the on-off valve is positioned in the piston and respectively communicated with the operating cavity and the liquid inlet cavity. The clutch master cylinder uses the on-off valve positioned in the piston to replace a compensating hole, the procedure of deburring by honing is omitted because of omission of the compensating hole, processing cost is low, and friction between the primary cup and the compensating hole is avoided so that the primary cup is not easy to wear and the service life is prolonged.
Description
Technical field
The utility model relates to the automobile clutch field, and especially a kind of processing cost is low, and primary cup is not easy to wear, improves the clutch master cylinder in working life.
Background technique
The clutch operation of domestic a lot of automotive types is a hydraulic type at present, and the clutch master cylinder of hydraulic clutch operating mechanism is generally traditional compensation cellular type clutch master cylinder; The structure of compensation cellular type clutch master cylinder can obtain from the model utility of Chinese patent announcement CN201209641Y to understand; This kind clutch master cylinder comprises the pump housing of clutch master cylinder and the piston in this pump housing, and the described pump housing outside has filler opening, oil outlet and flange plate successively, is connected with construction bolt on this flange plate, and the flanged dish end of the pump housing connects the push rod fork by push rod; Because present clutch master cylinder has been opened a compensate opening on the oil inlet hole side of the pump housing more, the compensation cellular type clutch master cylinder of gaining the name thus; When the pump housing is made, behind the boring processing compensate opening, tend to stay burr at pump housing inwall and compensate opening junction point, these burrs are difficult to remove; Using compensation cellular type clutch master cylinder on the automobile, when let slip the clutch, push rod promotes the piston reach, and piston must pass through compensate opening, does not have the place to go clean as if compensate opening inwall place burr, and primary cup just will be scratched behind the clutch pedal stepping on several times; The method of removing the compensate opening burr now is that processing cost is higher with grinding machine purlin, purlin mill; Even it is clean that compensate opening place burr is removed, during controlled clutch, because primary cup need be set up high pressure by just making clutch master cylinder behind the compensate opening at every turn, primary cup and compensation aperture also can make the primary cup wearing and tearing after 100,000 times to 300,000 times frictions, cause clutch master cylinder can't set up high pressure, clutch master cylinder was lost efficacy, can not be handled, vehicle can't be shifted gears, and influences ride safety of automobile.For the compensate opening that overcomes present compensation cellular type clutch master cylinder grinds with grinding machine purlin, purlin, processing cost is higher, during controlled clutch, primary cup and the friction of compensation aperture easily make the primary cup wearing and tearing cause clutch master cylinder to lose efficacy, and influence the clutch master cylinder deficiency in working life, it is low to design a kind of processing cost, primary cup is not easy to wear, improves the clutch master cylinder in working life, becomes problem demanding prompt solution.
Summary of the invention
The purpose of this utility model is that the compensate opening that overcomes present compensation cellular type clutch master cylinder grinds with grinding machine purlin, purlin, processing cost is higher, during controlled clutch, primary cup and the friction of compensation aperture, easily make the primary cup wearing and tearing cause clutch master cylinder to lose efficacy, influence the clutch master cylinder deficiency in working life, provide a kind of processing cost low, primary cup is not easy to wear, improves the clutch master cylinder in working life.
Concrete technological scheme of the present utility model is:
A kind of clutch master cylinder comprises the piston in the pump housing and this pump housing; Constitute active chamber between the described pump housing and piston nose; Described piston periphery is provided with scrobicular ring; Constitute admission chamber between the described pump housing and scrobicular ring; The described pump housing outside has filler opening, oil outlet; Described filler opening is communicated with admission chamber; Described oil outlet is communicated with active chamber; Described clutch master cylinder also comprises on-off valve; Described on-off valve is positioned at piston, and is communicated with active chamber, admission chamber respectively.This clutch master cylinder has replaced compensate opening with the on-off valve that is positioned at piston, owing to there is not compensate opening, saved the purlin and has ground off the burr operation, and processing cost is low; Avoid the friction between primary cup and the compensate opening, made primary cup not easy to wear, improved working life.
As preferably, the scrobicular ring place of described piston is axially arranged with groove; Described clutch master cylinder also comprises locating stud, and described locating stud passes groove fixedlys connected with the gusset of the pump housing with scrobicular ring; Described on-off valve comprises valve seat, valve rod; Described valve seat is fixedlyed connected with valve rod; Described valve seat is provided with closed end; Described valve rod is provided with the bar section; The diameter of described closed end is greater than the diameter of bar section; Described on-off valve also comprises back-up ring, Returnning spring; The front-end face of described piston is provided with mounting hole; The bottom surface of described mounting hole is provided with oil through, and described oil through is communicated with admission chamber; Described bar segment length is greater than the length of oil through, and the diameter of described oil through is greater than the diameter of bar section; Described valve seat is positioned at mounting hole, and described bar section is passed oil through and contacted with locating stud; Described back-up ring is positioned at mounting hole; Described valve seat is provided with return spring holder; Described Returnning spring one end is enclosed within outside the return spring holder, and the other end of Returnning spring contacts with back-up ring.When this clutch master cylinder was not worked, threw off the closed end of valve seat and the bottom surface of mounting hole, and active chamber and admission chamber gap and the oil through by mounting hole and valve base chamber is communicated with gap between valve rod; Work as let slip the clutch, during clutch master cylinder work, piston advances forward, under the resilient force of Returnning spring, fit in the closed end of valve seat and the bottom surface of mounting hole, active chamber and admission chamber are cut off; Piston moves forward, and makes hydraulic oil in the active chamber under the effect of piston and primary cup, increased pressure, and transfer to the clutch release slave cylinder of clutch by pipeline from oil outlet, the clutch release slave cylinder internal pressure raises, and promotes piston and push rod and moves, and makes withdrawal fork work; Work as release the clutch pedal, under the resilient force of piston return spring, piston moves backward, and valve rod contacts with locating stud; Piston continues motion backward, and the closed end of valve seat and the bottom surface of mounting hole break away from, and active chamber and admission chamber are communicated with, and high-pressure and hydraulic oil flows to admission chamber from active chamber, and the clutch master cylinder pressure release resets.This on-off valve is simple in structure, and processing cost is low, long service life.
As preferably, described Returnning spring is a taper type; The big end of Returnning spring contacts with back-up ring.Returnning spring is a taper type, and radial stability is better, and compression stroke is bigger.
As preferably, described back-up ring is provided with the location depression adaptive with the big end of Returnning spring.Make Returnning spring radially be difficult for moving.
The beneficial effects of the utility model are:
This clutch master cylinder has replaced compensate opening with the on-off valve that is positioned at piston, owing to there is not compensate opening, saved the purlin and has ground off the burr operation, and processing cost is low; Avoid the friction between primary cup and the compensate opening, made primary cup not easy to wear, improved working life.Described on-off valve is simple in structure, and processing cost is low, long service life.Described Returnning spring is a taper type, and radial stability is better, and compression stroke is bigger.Described back-up ring is provided with the location depression adaptive with the big end of Returnning spring, makes Returnning spring radially be difficult for moving.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the plan view of Fig. 1.
Among the figure: piston-1, active chamber-2, admission chamber-3, valve seat-4, valve rod-5, closed end-6, back-up ring-7, locating stud-8, Returnning spring-9, scrobicular ring-10, groove-11, mounting hole-12, bottom surface-13, oil through-14, return spring holder-15, location depression-16, bar section-17, the pump housing-18, filler opening-19, oil outlet-20, positioning hole-21, piston return spring-22.
Embodiment
Below in conjunction with shown in the accompanying drawing the utility model is described further.
Shown in accompanying drawing 1, accompanying drawing 2: a kind of clutch master cylinder comprises the piston 1 in the pump housing 18 and this pump housing; Constitute active chamber 2 between the described pump housing and piston nose; Be provided with piston return spring 22 in the described active chamber; Described piston periphery is provided with scrobicular ring 10; Constitute admission chamber 3 between the described pump housing and scrobicular ring; The described pump housing outside has filler opening 19, oil outlet 20; Described filler opening is communicated with admission chamber; Described oil outlet is communicated with active chamber; The scrobicular ring place of described piston is axially arranged with groove 11; The gusset of the described pump housing is provided with positioning hole 21; Described clutch master cylinder also comprises locating stud 8, and described locating stud passes groove and scrobicular ring and positioning hole interference fit; Described clutch master cylinder also comprises on-off valve; Described on-off valve comprises valve seat 4, valve rod 5; Described seat material is a rubber; Described valve seat encases the valve rod solidified forming; Described valve seat is provided with closed end 6; Described valve rod is provided with bar section 17; The diameter of described closed end is greater than the diameter of bar section; Described on-off valve also comprises back-up ring 7, Returnning spring 9; The front-end face of described piston is provided with mounting hole 12; The bottom surface 13 of described mounting hole is provided with oil through 14, and described oil through is communicated with admission chamber; Described bar segment length is greater than the length of oil through, and the diameter of described oil through is greater than the diameter of bar section; Described valve seat is positioned at mounting hole, and described bar section is passed oil through and contacted with locating stud; Described back-up ring is positioned at mounting hole, and described back-up ring is provided with the location depression 16 adaptive with the big end of Returnning spring; Described valve seat is provided with return spring holder 15; Described Returnning spring is a taper type; The small end of described Returnning spring is enclosed within outside the return spring holder, and the big end of Returnning spring is positioned at the location recess and contacts with back-up ring.
When this clutch master cylinder was not worked, threw off the closed end of valve seat and the bottom surface of mounting hole, and active chamber and admission chamber gap and the oil through by mounting hole and valve base chamber is communicated with gap between valve rod; Work as let slip the clutch, during clutch master cylinder work, piston advances forward, under the resilient force of Returnning spring, fit in the closed end of valve seat and the bottom surface of mounting hole, active chamber and admission chamber are cut off; Piston moves forward, and makes hydraulic oil in the active chamber under the effect of piston and primary cup, increased pressure, and transfer to the clutch release slave cylinder of clutch by pipeline from oil outlet, the clutch release slave cylinder internal pressure raises, and promotes piston and push rod and moves, and makes withdrawal fork work; Work as release the clutch pedal, under the resilient force of piston return spring, piston moves backward, and valve rod contacts with locating stud; Piston continues motion backward, and the closed end of valve seat and the bottom surface of mounting hole break away from, and active chamber and admission chamber are communicated with, and high-pressure and hydraulic oil flows to admission chamber from active chamber, and the clutch master cylinder pressure release resets.
This clutch master cylinder has replaced compensate opening with the on-off valve that is positioned at piston, owing to there is not compensate opening, saved the purlin and has ground off the burr operation, and processing cost is low; Avoid the friction between primary cup and the compensate opening, made primary cup not easy to wear, improved working life.Described on-off valve is simple in structure, and processing cost is low, long service life.Described Returnning spring is a taper type, and radial stability is better, and compression stroke is bigger.Described back-up ring is provided with the location depression adaptive with the big end of Returnning spring, makes Returnning spring radially be difficult for moving.
Claims (5)
1. a clutch master cylinder comprises the piston in the pump housing and this pump housing; Constitute active chamber between the described pump housing and piston nose; Described piston periphery is provided with scrobicular ring; Constitute admission chamber between the described pump housing and scrobicular ring; The described pump housing outside has filler opening, oil outlet; Described filler opening is communicated with admission chamber; Described oil outlet is communicated with active chamber; It is characterized in that: described clutch master cylinder also comprises on-off valve; Described on-off valve is positioned at piston (1), and is communicated with active chamber (2), admission chamber (3) respectively.
2. clutch master cylinder according to claim 1 is characterized in that: the scrobicular ring of described piston (10) locates to be axially arranged with groove (11); Described clutch master cylinder also comprises locating stud (8), and described locating stud passes groove fixedlys connected with the gusset of the pump housing with scrobicular ring; Described on-off valve comprises valve seat (4), valve rod (5); Described valve seat is fixedlyed connected with valve rod; Described valve seat is provided with closed end (6); Described valve rod is provided with bar section (17); The diameter of described closed end is greater than the diameter of bar section; Described on-off valve also comprises back-up ring (7), Returnning spring (9); The front-end face of described piston is provided with mounting hole (12); The bottom surface of described mounting hole (13) is provided with oil through (14), and described oil through is communicated with admission chamber; Described bar segment length is greater than the length of oil through, and the diameter of described oil through is greater than the diameter of bar section; Described valve seat is positioned at mounting hole, and described bar section is passed oil through and contacted with locating stud; Described back-up ring is positioned at mounting hole; Described valve seat is provided with return spring holder (15); Described Returnning spring one end is enclosed within outside the return spring holder, and the other end of Returnning spring contacts with back-up ring.
3. clutch master cylinder according to claim 2 is characterized in that: described Returnning spring is a taper type; The big end of Returnning spring contacts with back-up ring.
4. clutch master cylinder according to claim 2 is characterized in that: described back-up ring is provided with the location depression (16) adaptive with Returnning spring.
5. clutch master cylinder according to claim 3 is characterized in that: described back-up ring is provided with the location depression adaptive with the big end of Returnning spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200429555U CN201973137U (en) | 2011-02-21 | 2011-02-21 | Clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200429555U CN201973137U (en) | 2011-02-21 | 2011-02-21 | Clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973137U true CN201973137U (en) | 2011-09-14 |
Family
ID=44578240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200429555U Expired - Fee Related CN201973137U (en) | 2011-02-21 | 2011-02-21 | Clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404447A (en) * | 2018-12-28 | 2019-03-01 | 芜湖稳乐制动系统有限公司 | Vehicle braking pump |
-
2011
- 2011-02-21 CN CN2011200429555U patent/CN201973137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404447A (en) * | 2018-12-28 | 2019-03-01 | 芜湖稳乐制动系统有限公司 | Vehicle braking pump |
| CN109404447B (en) * | 2018-12-28 | 2024-03-08 | 芜湖稳乐制动系统有限公司 | Vehicle brake pump |
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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: 20110914 Termination date: 20130221 |