CN201973138U - Centre valve type clutch master cylinder - Google Patents
Centre valve type clutch master cylinder Download PDFInfo
- Publication number
- CN201973138U CN201973138U CN2011200256626U CN201120025662U CN201973138U CN 201973138 U CN201973138 U CN 201973138U CN 2011200256626 U CN2011200256626 U CN 2011200256626U CN 201120025662 U CN201120025662 U CN 201120025662U CN 201973138 U CN201973138 U CN 201973138U
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- Prior art keywords
- centre valve
- valve
- centre
- piston
- master cylinder
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- Expired - Lifetime
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Abstract
The utility model relates to a centre valve type clutch master cylinder which mainly solves the problems that a compensated hole type clutch easily scratches a primary cup, and the clutch master cylinder is disabled early due to repeatedly friction between the primary cup and a compensated hole and is easy to wear. The master cylinder comprises a pump body; a piston is arranged in the pump body; the piston divides the interior of the pump body into a working chamber and a liquid inlet chamber; a groove is arranged on an end socket of the piston; a first through hole is arranged at the bottom surface of the groove; a valve core of the centre valve is arranged in the first through hole; a valve seat of the central valve is arranged at one end of the valve core of the centre valve which is arranged in the working chamber; a return spring of the centre valve is arranged on the valve seat of the centre valve; a limit pin is arranged in the liquid inlet chamber; the master cylinder has the advantages that as the master cylinder is not provided with the compensated hole, the frictional wear between the primary cup and the compensated hole is avoided, the service life of the primary cup and the clutch master cylinder is prolonged, a working procedure of removing burring by truss grinding is omitted, and the processing cost is saved.
Description
Technical field
The utility model relates to a kind of automobile clutch master cylinder, relates in particular to a kind of primary cup fretting wear of having avoided, and in the working life of having improved primary cup, has improved the centre valve formula clutch master cylinder in the working life of clutch master cylinder simultaneously.
Background technique
Current most of manually retaining car (automatic catch car no-clutch pedal) clutch operation all is hydraulic type operating mechanism (present Santana, Jetta clutch operation still are traditional mechanical drag-line), 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, and gaining the name thus compensates the cellular type clutch master cylinder.The compensate opening diameter is generally at φ 0.3～φ 0.5mm, though compensate opening is processing easily, master cylinder inwall and compensate opening junction point will stay burr after the machining, and this burr is difficult to remove, the method of removing the compensate opening burr now is that this process cost is higher with grinding machine purlin, purlin mill.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 do 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, and 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, vehicle can't be shifted gears, and influences ride safety of automobile.
As notice of authorization number is CN201209641Y, name is called the Chinese utility model patent of clutch main cylinder assembly, it comprises the piston in cylinder body and this cylinder body, the cylinder body outside has filler opening successively, oil outlet and flange plate, the next door of oil outlet also is provided with compensate opening on the pump housing, this clutch master cylinder is a compensation cellular type clutch master cylinder, it also has above-mentioned described shortcoming: behind the processing compensate opening, master cylinder inwall and compensate opening junction point stay burr easily, can cause scuffing to primary cup, cause the primary cup poor sealing, clutch can not be handled, and primary cup and compensate opening repeatedly rub, and very easily wearing and tearing cause clutch master cylinder to lose efficacy.
Summary of the invention
The utility model has mainly solved compensation cellular type clutch master cylinder and has scratched primary cup easily, cause the primary cup poor sealing, the problem that clutch can not be handled, and primary cup and the repeatedly friction of place, compensation aperture, very easily wearing and tearing, the problem that causes clutch master cylinder to lose efficacy provides a kind of employing centre valve valve seat, centre valve spool to seal, need not to be provided with compensate opening, the centre valve formula clutch master cylinder that has prolonged primary cup working life and clutch master cylinder working life.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of centre valve formula clutch master cylinder, comprise the pump housing, inside at the pump housing is provided with piston, piston is divided into active chamber and admission chamber two-part with pump housing inside, the termination of piston is provided with groove, groove floor is provided with first through hole, described first through hole is connected active chamber with admission chamber, in first through hole, be provided with the centre valve spool, the end that the centre valve spool is positioned at active chamber is provided with the centre valve valve seat, on the centre valve valve seat, be provided with the centre valve returning spring, be provided with position limit pin in described admission chamber, take action in the admission chamber straight line at place, path of described position limit pin and centre valve spool intersects.The utility model adopts the mode of centre valve valve seat, centre valve spool and piston seal to replace traditional additional cellular type structure, avoided the fretting wear of primary cup and compensate opening diameter, 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, save the purlin and ground off the burr operation, saved processing cost greatly.In the utility model, fluid flows into active chamber by first through hole from admission chamber, and when clutch master cylinder was worked, centre valve valve seat and piston formed sealing, thereby set up high pressure at active chamber.Position limit pin is used to stop that the centre valve spool moves on, and when clutch master cylinder was not worked, the centre valve spool withstood on the position limit pin.The centre valve returning spring makes the centre valve valve seat can be returned to and the contacted state of piston end surface, makes to form sealing between centre valve valve seat and the piston end surface.
As a kind of preferred version, evenly be provided with the muscle of some projectioies on the described centre valve spool face.In the time of in centre valve is inserted into through hole, between muscle and muscle, be formed with the passage that fuel feeding liquid passes through.When clutch master cylinder was not worked, fluid flow into active chamber by the passage that forms between two muscle from admission chamber like this.
As a kind of preferred version, described centre valve valve seat is made by rubber, and the centre valve valve seat is enclosed within on the centre valve spool termination, and the bottom surface of centre valve valve seat is provided with bulge loop, and projection is formed with a circle convex edge on the surperficial bottom of centre valve valve seat.This centre valve valve seat is a rubber parts, and when clutch master cylinder was worked, the centre valve valve seat contacted with piston end surface and can form sealing, has cut off the connection of active chamber and admission chamber.It is tightr that bulge loop makes that centre valve is connected with piston end surface, and sealing effect is better.
As a kind of preferred version, be provided with a circle annular groove at described groove inwall near opening, in annular groove, be equipped with first circlip, on the centre valve valve seat, be with the centre valve returning spring, described centre valve returning spring one end withstands on first circlip, and the centre valve returning spring the other end withstands on the convex edge of centre valve valve seat.The centre valve returning spring by on piston end surface, makes centre valve valve seat and piston end surface form sealing the centre valve valve seat.
As a kind of preferred version, described admission chamber inwall is provided with second through hole and the cell body relative with second through hole, and described position limit pin inserts admission chamber by second through hole, and the position limit pin front end is inserted in the cell body.Described second through hole and cell body are positioned on same the diameter of admission chamber, this position limit pin is used to stop that the centre valve spool moves on, and when clutch master cylinder was not worked, the centre valve spool withstood on the position limit pin, this makes the centre valve valve seat separate with piston end surface, and admission chamber communicates with active chamber.
As a kind of preferred version, on the pump housing, be provided with oil outlet and filler opening, described oil outlet is connected with active chamber, and described filler opening is connected with admission chamber.Fluid enters admission chamber by filler opening, by being flowed out by liquid outlet behind the active chamber.
As a kind of preferred version, on piston, be with the piston returning spring, the described piston returning spring the other end is enclosed within on the spring seat, and described spring seat is installed on the interior end of the pump housing.Spring seat plays fixing and positioning action to the piston returning spring.
As a kind of preferred version, be with primary cup on the anterior face of described piston, on the posterior face of piston, be with secontary cup.Primary cup and secontary cup play seal action to piston, make piston that pump housing inside is separated into and connect a cavity of sealing.
As a kind of preferred version, on piston rear end, be connected with input and try hard to recommend bar, try hard to recommend in input and be connected with U type folder on the rod rear end.Behind let slip the clutch, the active force that foot pedal lever mechanism will act on the pedal amplifies, and acts on after the amplification on the U type folder, and U type folder is transferred to input with power and tries hard to recommend bar, and push rod promotes piston-advance.
The utility model has the advantages that: adopt the mode of centre valve valve seat, centre valve spool and piston seal to replace traditional additional cellular type structure, avoided the fretting wear of primary cup and compensate opening diameter, improved the working life of primary cup, prolonged the working life of clutch master cylinder simultaneously, simultaneously, owing to there has not been compensate opening, save the purlin and ground off the burr operation, saved processing cost greatly.
Description of drawings
Fig. 1 is a kind of cross-sectional view of the present utility model;
Fig. 2 is a kind of plan structure schematic representation of the utility model;
Fig. 3 is a kind of structural representation of the utility model centre valve spool;
Fig. 4 be among Fig. 3 C-C to cross-sectional view;
Fig. 5 is the structure enlarged diagram at A place among Fig. 1;
Fig. 6 is the structure enlarged diagram at B place among Fig. 1.
Embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described.
Embodiment:
A kind of centre valve formula of present embodiment clutch master cylinder as depicted in figs. 1 and 2, comprises the pump housing 1, is respectively arranged with filler opening 10 and oil outlet 11 on the pump housing, also is provided with copper termination 12 on oil outlet.Be provided with piston 2 in pump housing inside, this piston is separated into admission chamber 18 and 17 two parts of active chamber with pump housing inside, and filler opening 10 is connected with admission chamber, and oil outlet 11 is connected with active chamber.The termination of piston is provided with groove 3, and the bottom of groove is that piston end face is provided with first through hole, 25, the first through holes active chamber 17 and admission chamber 18 are connected.Be with piston returning spring 7 on the piston termination, this piston returning spring the other end is nested with on spring seat 9, and spring is installed on the left end of body interior.Be provided with centre valve spool 4 in first through hole, as shown in Figure 3 and Figure 4, the surface of this spool is provided with three muscle of evenly arranging 23, is formed with the passage that fuel feeding liquid passes through between muscle and muscle.The termination of centre valve spool is provided with a circle draw-in groove 24, as Fig. 1 and shown in Figure 5, on the termination of centre valve spool, be equipped with the centre valve valve seat, this centre valve valve seat is that rubber is made, centre valve valve seat bottom surface is provided with bulge loop 27, projection is formed with a circle convex edge 26 on the surperficial bottom of centre valve valve seat, be provided with a circle annular groove 31 at the groove inwall near opening, in annular groove, be equipped with first circlip 8, on the centre valve valve seat, be with centre valve returning spring 6, this centre valve returning spring one end withstands on the convex edge 26, and the other end withstands on first circlip 8.As depicted in figs. 1 and 2, on the inwall of the admission chamber of the pump housing, have second through hole 15, the inwall relative with through hole is provided with cell body 14, this second through hole and cell body are positioned on same the diameter of admission chamber, in the second through hole interpolation position limit pin 16 is arranged, the position limit pin front end is inserted in the cell body 14, and the centre valve spool withstands on the position limit pin.On the anterior face of piston, be equipped with primary cup 13, on the posterior face of piston, be equipped with secontary cup 19.On the rear end of piston, be connected with input and try hard to recommend bar 21, input is tried hard to recommend bar and is connected with U type folder 22, as shown in Figure 6, input is tried hard to recommend the rod end head and is provided with dop 30, on pump housing right-hand member, be stamped baffle plate 28, input is tried hard to recommend bar and is passed baffle plate, dop is crushed under the baffle plate, also be provided with second draw-in groove at pump housing right-hand member near on the inwall of opening, be equipped with second circlip 29 in second draw-in groove, second circlip is pressed on the baffle plate, also is provided with dust-proof cover 19 on pump housing right-end openings, and dust-proof cover is buckled on the pump housing right-end openings.
The centre valve formula clutch master cylinder working principle of present embodiment is: as shown in Figure 1, this moment, clutch master cylinder was off position (this moment, clutch master cylinder active chamber and admission 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, U type folder is passed to input with power and is tried hard to recommend bar, input is tried hard to recommend bar and is promoted piston-advance, piston overcomes the piston returning spring and advances, along with moving on of piston, the centre valve valve seat contacts with piston end surface, and this moment, master cylinder active chamber and admission chamber separated, along with moving on of piston, the brake fluid of master cylinder active chamber is compressed, the master cylinder active chamber is set up high pressure gradually, and along with moving on of piston, the sealing between centre valve valve seat and the piston end surface is become better and better.Work as release the clutch pedal, piston is return under the active force of piston return spring, along with the continuation return of piston, the limited pin of centre valve spool withstands, and the centre valve spool can't readvance, this moment, the centre valve spool overcame the active force of centre valve return spring, the centre valve valve seat separates with piston end surface, and this is that active chamber and admission chamber are communicated with, and the brake fluid of high pressure flows to admission chamber from active chamber, circulation next time is prepared in the clutch master cylinder pressure release.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as centre valve spool, centre valve valve seat, piston, the pump housing, position limit pin morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (9)
1. centre valve formula clutch master cylinder, comprise the pump housing, inside at the pump housing is provided with piston, piston is divided into active chamber and admission chamber two-part with pump housing inside, it is characterized in that: the termination of piston (2) is provided with groove (3), groove floor is provided with first through hole (25), described first through hole is connected active chamber (17) with admission chamber (18), in first through hole, be provided with centre valve spool (4), the end that the centre valve spool is positioned at active chamber (17) is provided with centre valve valve seat (5), on the centre valve valve seat, be provided with centre valve returning spring (6), be provided with position limit pin (16) in described admission chamber (18), take action in admission chamber (18) straight line at place, path of described position limit pin and centre valve spool (4) intersects.
2. a kind of centre valve formula clutch master cylinder according to claim 1 is characterized in that evenly being provided with on described centre valve spool (4) surface muscle (23) of some projectioies.
3. a kind of centre valve formula clutch master cylinder according to claim 1, it is characterized in that described centre valve valve seat (5) made by rubber, the centre valve valve seat is enclosed within on the centre valve spool termination, the bottom surface of centre valve valve seat is provided with bulge loop (27), and projection is formed with a circle convex edge (26) on the surperficial bottom of centre valve valve seat.
4. according to claim 1 or 2 or 3 described a kind of centre valve formula clutch master cylinders, it is characterized in that being provided with a circle annular groove (31) near opening at described groove (3) inwall, in annular groove, be equipped with first circlip (8), on the centre valve valve seat, be with centre valve returning spring (6), described centre valve returning spring (6) one ends withstand on first circlip, and the centre valve returning spring the other end withstands on the convex edge (26) of centre valve valve seat (5).
5. according to claim 1 or 2 or 3 described a kind of centre valve formula clutch master cylinders, it is characterized in that described admission chamber (18) inwall is provided with second through hole (15) and the cell body (14) relative with second through hole, described position limit pin (16) inserts admission chamber (18) by second through hole, and the position limit pin front end is inserted in the cell body.
6. a kind of centre valve formula clutch master cylinder according to claim 5, it is characterized in that on the pump housing (1), being provided with oil outlet (11) and filler opening (10), described oil outlet is connected with active chamber (17), and described filler opening (10) is connected with admission chamber (18).
7. according to claim 1 or 2 or 3 described a kind of centre valve formula clutch master cylinders, it is characterized in that on piston (2), being with piston returning spring (7), the described piston returning spring the other end is enclosed within on the spring seat (9), and described spring seat is installed on the interior end of the pump housing (1).
8. a kind of centre valve formula clutch master cylinder according to claim 7 is characterized in that being with primary cup (13) on the anterior face of described piston (2), is with secontary cup (19) on the posterior face of piston.
9. according to claim 1 or 2 or 3 described a kind of centre valve formula clutch master cylinders, it is characterized in that on piston (2) rear end, being connected with input and try hard to recommend bar (21), try hard to recommend in input and be connected with U type folder (22) on the rod rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200256626U CN201973138U (en) | 2011-01-26 | 2011-01-26 | Centre valve type clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200256626U CN201973138U (en) | 2011-01-26 | 2011-01-26 | Centre valve type clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973138U true CN201973138U (en) | 2011-09-14 |
Family
ID=44578241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200256626U Expired - Lifetime CN201973138U (en) | 2011-01-26 | 2011-01-26 | Centre valve type clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973138U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506093A (en) * | 2011-12-19 | 2012-06-20 | 芜湖盛力制动有限责任公司 | Clutch manipulation cylinder of engineering mechanical braking system |
| CN102941433A (en) * | 2012-10-19 | 2013-02-27 | 浙江吉尚汽车部件有限公司 | Main cylinder and seal ring assembling method |
| CN104179849A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Single-plunger clutch pump |
| 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 |
| CN106015393A (en) * | 2016-08-05 | 2016-10-12 | 林伟 | Clutch master cylinder |
| CN106090069A (en) * | 2016-08-05 | 2016-11-09 | 林伟 | Low abrasion clutch master cylinder |
| CN106122313A (en) * | 2016-08-05 | 2016-11-16 | 林伟 | The control valve assembly of clutch master cylinder |
| CN108644254A (en) * | 2018-08-03 | 2018-10-12 | 四川柯世达汽车制动系统集团有限公司 | The total pump assembly of wear-resistant clutch |
| 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 |
-
2011
- 2011-01-26 CN CN2011200256626U patent/CN201973138U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506093A (en) * | 2011-12-19 | 2012-06-20 | 芜湖盛力制动有限责任公司 | Clutch manipulation cylinder of engineering mechanical braking system |
| CN102941433A (en) * | 2012-10-19 | 2013-02-27 | 浙江吉尚汽车部件有限公司 | Main cylinder and seal ring assembling method |
| 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 |
| CN104179849A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Single-plunger clutch pump |
| CN106015393A (en) * | 2016-08-05 | 2016-10-12 | 林伟 | Clutch master cylinder |
| CN106090069A (en) * | 2016-08-05 | 2016-11-09 | 林伟 | Low abrasion clutch master cylinder |
| CN106122313A (en) * | 2016-08-05 | 2016-11-16 | 林伟 | The control valve assembly of clutch master cylinder |
| CN108644254A (en) * | 2018-08-03 | 2018-10-12 | 四川柯世达汽车制动系统集团有限公司 | The total pump assembly of wear-resistant clutch |
| 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 |
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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: 20110914 |
|
| CX01 | Expiry of patent term |