CN202091404U - Ball valve type clutch master cylinder - Google Patents
Ball valve type clutch master cylinder Download PDFInfo
- Publication number
- CN202091404U CN202091404U CN2010206048285U CN201020604828U CN202091404U CN 202091404 U CN202091404 U CN 202091404U CN 2010206048285 U CN2010206048285 U CN 2010206048285U CN 201020604828 U CN201020604828 U CN 201020604828U CN 202091404 U CN202091404 U CN 202091404U
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- CN
- China
- Prior art keywords
- master cylinder
- clutch master
- valve seat
- ball
- type clutch
- 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
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Abstract
The utility model discloses a ball valve type clutch master cylinder, which comprises a body of the clutch master cylinder and a piston inside the master cylinder body. A steel ball and a valve seat are equipped inside the piston. One end of the valve seat is an inner concave conical surface. The steel ball cooperates with the inner concave conical surface of the valve seat. The ball valve type clutch master cylinder solves the problem that a main leather cup on the piston of a traditional compensated hole type clutch master cylinder is prone to abrasion and scratches. By replacing the traditional compensated hole type structure with the steel ball and the valve seat, the ball valve type clutch master cylinder structurally prevents the friction and abrasion between the main leather cup and a compensated hole and prolongs the service lifetime of the main leather cup. The service lifetime of the clutch master cylinder is also prolonged. Meanwhile, a grinding deburring process is no longer required due to the fact that the compensated hole is no longer existent. Therefore, the processing cost is significantly reduced.
Description
Technical field
The utility model relates to a kind of automobile clutch master cylinder.
Background technique
Current most of manually retaining car (automatic catch car no-clutch pedal) clutch operation all is the hydraulic type operating mechanism, the clutch master cylinder of domestic a lot of vehicles still is traditional compensation cellular type clutch master cylinder at present, compensation cellular type clutch master cylinder is because it has opened a compensate opening on the oil inlet hole side more, gain the name thus and compensate the cellular type clutch master cylinder, the compensate opening diameter is generally at φ 0.3mm～φ 0.5mm, though compensate opening is processing easily, but machine adds back master cylinder inwall and the compensate opening junction point will stay burr, this burr is difficult to remove, the method of removing the compensate opening burr now is with grinding machine purlin, purlin mill, this process cost is higher, using compensation cellular type clutch master cylinder on the automobile, when let slip the clutch, push rod promotes the piston reach, piston must pass through compensate opening, if compensate opening inwall place burr does not have the place to go clean, primary cup just will be scratched behind the clutch pedal stepping on several times, cause the primary cup poor sealing, clutch can not be handled, vehicle can't be shifted gears, if burr place to go, compensate opening place is clean, behind (100,000 times～300,000 times) let slip the clutch repeatedly, because primary cup need be set up high pressure by just making clutch master cylinder behind the compensate opening at every turn, repeatedly (100,000 times～300,000 times) friction of primary cup and compensation aperture, very easily make the primary cup wearing and tearing, cause clutch master cylinder can't build pressure, clutch master cylinder lost efficacy, and vehicle can't be shifted gears, and influences ride safety of automobile.
Chinese patent notification number CN201209641Y on March 18 2009 day for announcing, has announced a kind of clutch main cylinder assembly.It comprises the cylinder body of clutch master cylinder and the piston in this cylinder body, the described cylinder body outside has filler opening, oil outlet and flange plate successively, be connected with construction bolt on this flange plate, the flanged dish of cylinder body is by the continuous push rod fork of push rod, and described filler opening, oil outlet and construction bolt three are arranged on the same plane.It can reduce the arrangement space of master cylinder, and is convenient to the oil inlet pipe of filler opening connection, oil outlet tube car load layout and the optimization oil pipe trend that oil outlet connects.This clutch main cylinder assembly using compensation hole, master cylinder inwall and compensate opening junction point will stay burr, this burr is difficult to remove, during let slip the clutch, push rod promotes the piston reach, and piston must pass through compensate opening, and primary cup just will be scratched behind the clutch pedal stepping on several times, and primary cup and compensation aperture repeatedly rub, and very easily make the primary cup wearing and tearing.
Summary of the invention
The purpose of this utility model is to provide a kind of ball-valve type clutch master cylinder that adopts steel ball and valve seat to seal, and has solved to adopt traditional compensation clutch master cylinder the problem that primary cup weares and teares and scratches easily on the piston.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of ball-valve type clutch master cylinder comprises the pump housing of clutch master cylinder and this pump housing inner carrier, comprises steel ball and valve seat in the described piston, and valve seat one end is the indent conical surface, and steel ball and valve seat indent conical surface cooperate.Adopt steel ball and valve seat to seal, good seal action is arranged between steel ball and the ball seat, improved sealing, replaced traditional compensation cellular type structure, avoided fretting wear between primary cup and the compensate opening from structure, improved the working life of primary cup, improved the working life of clutch master cylinder simultaneously, simultaneously, owing to there has not been compensate opening, so having saved the purlin grinds off the burr operation, has saved processing cost greatly.
As preferably, be connected with the steel ball return spring on the described steel ball, valve seat indent conical surface center is provided with a through hole, and backing pin is installed in the through hole, and backing pin cooperates with via clearance.Be connected with the steel ball return spring on the steel ball, steel ball is subjected to steel ball return spring extruding force, fits tightly with backing pin, is connected with backing pin in the through hole, and backing pin cooperates with via clearance, can steel ball be lifted off a seat by the backing pin extruding.
As preferably, described backing pin one end is interior concaved circular cambered surface, and backing pin cylinder upper edge circumference is evenly distributed with many arc grooves, and arc groove is communicated with the backing pin two ends.Backing pin one end is interior concaved circular cambered surface, fit tightly when backing pin is contacted with steel ball, make the steel ball can radial displacement, backing pin cylinder upper edge circumference is evenly distributed many arc grooves, arc groove is communicated with the backing pin two ends, is convenient to brake fluid and flows between oil suction chamber and active chamber by backing pin.
As preferably, described valve seat skeleton is a metal frame, and skin is a vulcanized rubber, and the valve seat outside is provided with the profile of tooth seal groove with the piston joint.The valve seat skeleton is a metal frame, and skin is a vulcanized rubber, and is provided with the profile of tooth seal groove with the piston joint outside the valve seat, makes valve seat firmly inner, and has improved the sealing at this position.
As preferably, have the oval hole on the described piston, oval is connected with position limit pin in the hole.Have the oval hole on the piston, oval is connected with position limit pin in the hole, limits the piston the sphere of activities, stops backing pin during to the qualification position, lifts off a seat by backing pin extruding steel ball.
The beneficial effects of the utility model are: (1), employing steel ball and valve seat replace traditional compensation cellular type structure, avoided fretting wear between primary cup and the compensate opening from structure, improved the working life of primary cup, improved the working life of clutch master cylinder, simultaneously, owing to there has not been compensate opening, grind off the burr operation so saved the purlin, saved processing cost greatly; (2), adopt steel ball and valve seat to seal, valve seat adopts the outer vulcanized rubber of metal frame to make and there is the profile of tooth seal groove in the outside, and good seal action is arranged between steel ball and the ball seat, has improved sealing.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is an another kind of structural representation of the present utility model;
Fig. 3 is a kind of structural representation of backing pin in the utility model;
Among the figure: 1, the pump housing, 2, spring seat, 3, oil outlet copper termination, 4, piston return spring, 5, circlip, 6. steel ball return spring, 7. steel ball, 8. backing pin, 9. valve seat, 10. primary cup, 11. pistons, 12. position limit pins, 13. secontary cup, 14. baffle plates, 15. dust-proof cover, 16. circlip, bar, 18. locking nuts are tried hard to recommend in 17. inputs, 19.U type folder, 20 oil outlets, 21, filler opening.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described specifically:
Embodiment 1: as shown in Figure 1, a kind of ball-valve type clutch master cylinder comprises the pump housing 1, spring seat 2, oil outlet copper termination 3, piston return spring 4, circlip 5, steel ball return spring 6, steel ball 7, backing pin 8, valve seat 9, primary cup 10, piston 11, position limit pin 12, secontary cup 13, baffle plate 14, dust-proof cover 15, circlip 16, imports and try hard to recommend bar 17, locking nut 18, U type folder 19, oil outlet 20 and filler opening 21.
As shown in Figure 1, valve seat 9 adopts the outer vulcanized rubber making of metal frame and the outside that the profile of tooth seal groove is arranged.Have kidney slot on the piston 11, position limit pin 12 inserts in the kidney slot of piston 11.Clutch master cylinder is installed on the vehicle body by two bolts.U type folder 19 is installed on the clutch pedal leverage by hinge.As shown in Figure 2, oil inlet hole departs from filler opening 21 centers, as shown in Figure 3, scheming middle-grade pin 8 is a cast member, go out concaved circular cambered surface in (cooperating with steel ball) by the lathe car, backing pin cylinder upper edge circumference is evenly distributed eight (3～8 all can) arc grooves, and arc groove is communicated with the backing pin two ends, be convenient to brake fluid and between oil suction chamber and active chamber, flow, form the brake fluid circulation passage by backing pin.
Working principle of the present utility model is: as shown in Figure 1, this moment, clutch master cylinder was off position (this moment, clutch master cylinder active chamber and oil suction chamber communicated), when let slip the clutch, the active force that foot pedal lever mechanism will act on the pedal amplifies, active force after the amplification acts on the U type folder 19, U type folder 19 is passed to input with power and is tried hard to recommend bar 17, input is tried hard to recommend bar 17 promotion pistons 11 and is advanced, piston 11 moves on, steel ball return spring 6 this moment return under the returning place force effect, steel ball return spring 6 promotes the opposite direction motion of steel ball 7 to piston-advance, along with moving on of piston 11, steel ball 7 contacts with valve seat 9, this moment, master cylinder active chamber and oil suction chamber separated, along with moving on of piston 11, the brake fluid of master cylinder active chamber is compressed, the master cylinder active chamber is set up high pressure gradually, along with moving on of piston, sealing between steel ball 7 and the valve seat 9 is become better and better, work as release the clutch pedal, piston 11 is return under the active force of piston return spring 4, and along with the continuation return of piston, backing pin 8 limited pins 12 withstand, backing pin 8 can't readvance, this moment, backing pin 8 overcame the active force of steel ball return spring 6, backed down steel ball 7, and steel ball 7 separates with valve seat 9, this moment, active chamber and oil suction chamber were communicated with, the brake fluid of high pressure flows to oil suction chamber from active chamber, and circulation next time is prepared in the clutch master cylinder pressure release.
Above-described embodiment is a kind of preferable scheme of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
Claims (6)
1. ball-valve type clutch master cylinder comprises the pump housing and this pump housing inner carrier of clutch master cylinder it is characterized in that comprise steel ball and valve seat in the described piston, valve seat one end is the indent conical surface that steel ball and valve seat indent conical surface cooperate.
2. according to the described a kind of ball-valve type clutch master cylinder of claim 1, it is characterized in that, be connected with the steel ball return spring on the described steel ball, the concaved circular cambered surface center is provided with a through hole in the valve seat, is connected with backing pin in the through hole, and backing pin cooperates with via clearance.
3. according to claim 1 or 2 described a kind of ball-valve type clutch master cylinders, it is characterized in that described backing pin one end is interior concaved circular cambered surface, backing pin cylinder upper edge circumference is evenly distributed with many arc grooves, and arc groove is communicated with the backing pin two ends.
4. according to claim 1 or 2 described a kind of ball-valve type clutch master cylinders, it is characterized in that described valve seat skeleton is a metal frame, skin is a vulcanized rubber, and the valve seat outside is provided with the profile of tooth seal groove with the piston joint.
5. according to the described a kind of ball-valve type clutch master cylinder of claim 3, it is characterized in that described valve seat skeleton is a metal frame, skin is a vulcanized rubber, and the valve seat outside is provided with the profile of tooth seal groove with the piston joint.
6. according to the described a kind of ball-valve type clutch master cylinder of claim 5, it is characterized in that have the oval hole on the described piston, oval is connected with position limit pin in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206048285U CN202091404U (en) | 2010-11-15 | 2010-11-15 | Ball valve type clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206048285U CN202091404U (en) | 2010-11-15 | 2010-11-15 | Ball valve type clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091404U true CN202091404U (en) | 2011-12-28 |
Family
ID=45366473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206048285U Expired - Lifetime CN202091404U (en) | 2010-11-15 | 2010-11-15 | Ball valve type clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257725A (en) * | 2014-07-14 | 2016-01-20 | 舍弗勒技术股份两合公司 | Clutch hydraulic master cylinder and shell structure thereof |
-
2010
- 2010-11-15 CN CN2010206048285U patent/CN202091404U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257725A (en) * | 2014-07-14 | 2016-01-20 | 舍弗勒技术股份两合公司 | Clutch hydraulic master cylinder and shell structure thereof |
| CN105257725B (en) * | 2014-07-14 | 2019-06-18 | 舍弗勒技术股份两合公司 | Wearing clutch hydraulic main cylinder and its shell structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |