CN203067603U - Central valve type clutch master cylinder - Google Patents
Central valve type clutch master cylinder Download PDFInfo
- Publication number
- CN203067603U CN203067603U CN 201220720089 CN201220720089U CN203067603U CN 203067603 U CN203067603 U CN 203067603U CN 201220720089 CN201220720089 CN 201220720089 CN 201220720089 U CN201220720089 U CN 201220720089U CN 203067603 U CN203067603 U CN 203067603U
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- cavity
- master cylinder
- piston
- push rod
- clutch master
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- Expired - Fee Related
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Abstract
The utility model discloses a central valve type clutch master cylinder. The central valve type clutch master cylinder aims to solve the problems that a main leather cup of a traditional compensating hole type clutch master cylinder is prone to be worn, a compensating hole is prone to be blocked, so that a clutch cannot set up pressure and release pressure and traffic safety is affected. The central valve type clutch master cylinder comprises a main cylinder body, wherein a cavity body is formed in the main cylinder body, a piston is arranged in the cavity body, one end of the piston is provided with a connecting pushing rod, an oil cavity is formed in the piston, the oil cavity is communicated with the cavity body, an overflowing hole which is communicated with the oil cavity is radially formed in the piston, a valve body is arranged on the piston and an opposite end of the connecting pushing rod, the valve body is used for communicating the oil cavity and the cavity body and breaking off communication between the oil cavity and the cavity body, a connecting hole is formed in the main cylinder body, the connecting hole is connected with an oil inlet connector, a channel which is communicated with the connecting hole is formed in the main cylinder body, and the channel is communicated with the overflowing hole. When the central valve type clutch master cylinder is used, the piston is not prone to be worn, the phenomenon that a compensating hole is blocked does not occur, a clutch can stably and reliably set up pressure and release pressure, the clutch is low in failure rate and long in service life, and traffic safety is guaranteed.
Description
Technical field
The utility model relates to a kind of oil pump, and more particularly, it relates to the low centre valve formula clutch master cylinder of a kind of rate of fault.
Background technique
What the clutch master cylinder of at present a lot of automobiles adopted is traditional compensation cellular type clutch master cylinder, the compensate opening diameter is generally about 0.7mm, compensate opening is easy to process, but compensate opening processing back stays burr easily at master cylinder inwall and compensate opening junction point, this burr is difficult to remove, when let slip the clutch, push rod promotes the piston reach, primary cup must pass through compensate opening, and primary cup is scratched by burr easily, causes the primary cup poor sealing, repeatedly behind the let slip the clutch, primary cup and compensate opening repeatedly rub, and very easily make the primary cup wearing and tearing, and fricative scurf stop up compensate opening easily, causing clutch master cylinder to build presses and release, clutch master cylinder lost efficacy, and vehicle can't be shifted gears, and influences ride safety of automobile.
Chinese patent notification number CN202188043U, a kind of compensation cellular type hydraulic coupling master cylinder is disclosed, comprise the pump housing, be provided with master cylinder and piston in the pump housing, piston is divided into feed flow chamber and brake chamber with master cylinder, also is provided with the oil-feed device that connects the automobile liquid storage tank on the pump housing, the oil-feed device comprises the oil inlet hole that is arranged on the pump housing, the oil inlet hole interference connects fuel inlet fitting, and fuel inlet fitting connects liquid storage tank, and oil inlet hole and fuel inlet fitting joint arrange seal arrangement.The outlet of oil inlet hole is communicated with the feed flow chamber, and oil inlet hole also is communicated with compensate opening, and the outlet of compensate opening is arranged on the inwall of master cylinder.Compensation cellular type clutch master cylinder is when let slip the clutch repeatedly, primary cup and compensate opening repeatedly rub, very easily make the primary cup wearing and tearing, and fricative scurf stops up compensate opening easily, causing clutch master cylinder to build presses and release, clutch master cylinder lost efficacy, and vehicle can't be shifted gears, and influences ride safety of automobile.
The model utility content
It is easy to wear that the utility model has overcome traditional compensation cellular type clutch master cylinder primary cup, compensate opening easily stops up, cause clutch to build and press and release, influence the deficiency of traffic safety, a kind of centre valve formula clutch master cylinder is provided, in use piston is not easy to wear for it, do not have the compensate opening phenomenon of blocking, clutch build press and release reliable and stable, the clutch rate of fault is low, long service life has guaranteed traffic safety.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of centre valve formula clutch master cylinder, comprise Master cylinder body, be provided with cavity in the Master cylinder body, be provided with piston in the cavity, piston one end connects push rod, be provided with the fluid chamber that is communicated with cavity in the piston, radially be provided with the overflow hole that is communicated with the fluid chamber on the piston, on the piston be connected the push rod opposite end and be provided with valve body for break-make fluid chamber and cavity, Master cylinder body is provided with attachment hole, is connected with fuel inlet neck on the attachment hole, be provided with the passage that is communicated with attachment hole in the Master cylinder body, passage and overflow hole are communicated with.
Push rod is connecting clutch pedal, and when let slip the clutch, push rod promotes the piston reach, and valve body is opened, and fluid is transported to the fluid chamber from filler opening by attachment hole, passage, overflow hole, and the fluid in the fluid chamber is transported to by valve body and builds pressure in the cavity.Clutch wants adapted to have the clutch pedal device of bidirectional modulation power assistant spring in actual use, and the moment of torsion that pedal is in power assistant spring under the free state is enough to make push rod to reset in the power along the push rod direction.Stress-relief process is realized resetting of push rod by power assistant spring.The acting in conjunction by valve body and piston in use realizes building pressure and release, and sealing structure is reliable, and piston is not easy to wear, do not have the compensate opening phenomenon of blocking, clutch build press and release reliable and stable, the clutch rate of fault is low, long service life has guaranteed traffic safety.
As preferably, be socketed with guide cylinder on the push rod, a piston part closely is connected with the guide cylinder inwall, and another part closely is connected with cavity inner wall, and the end of guide cylinder is near the overflow hole position, and the guide cylinder external diameter is less than the cavity internal diameter.There is the gap in push rod between guide cylinder outer wall and the cavity inner wall after promoting the piston motion, makes overflow hole and passage be in connected state.Guide cylinder has the effect of guiding, makes piston steadily reliable in the process that promotes.
As preferably, cavity is step axle shape, and cavity is near the aperture greater than the other end, the aperture of push rod end, closely be socketed with guide pin bushing near the bigger diameter end position in the cavity, guide pin bushing is socketed on the guide cylinder, and cavity inner wall is provided with circular groove, is provided with the back-up ring for spacing guide pin bushing in the circular groove.By guide pin bushing guide cylinder is installed in the cavity, simple in structure, connect reliably, back-up ring makes the guide pin bushing can axial float.
As preferably, the large-diameter portion that access portal is arranged on step axle shape cavity divides and the transitional surface of minor diameter part between dividing on.This simple in structure, guaranteed the connection of passage and overflow hole.
As preferably, attachment hole is arranged on away from the push rod position, is provided with the oil nozzle seal ring between attachment hole and the fuel inlet neck.The oil nozzle seal ring makes the good seal performance that is connected of fuel inlet neck and attachment hole.
As preferably, passage from the attachment hole to the overflow hole to being obliquely installed near the cavity axial direction.Passage is obliquely installed convenient processing.
As preferably, be provided with piston packing between piston outer wall and the cavity inner wall, be provided with the guide pin bushing seal ring between guide cylinder outer wall and the guide pin bushing inwall.Piston packing has increased the sealability of piston and cavity inner wall, and the guide pin bushing seal ring has increased the sealability between guide cylinder and the guide pin bushing inwall.
As preferably, the end of push rod is connected with clevis, is connected with nut near the clevis position on the push rod, is connected with dust-proof cover between nut and the Master cylinder body, and the part that push rod and guide cylinder are arranged between nut and the Master cylinder body is housed in the dust-proof cover.Dust-proof cover prevents that dust deposit is on push rod and guide cylinder.
Compared with prior art, the beneficial effects of the utility model are: (1) clutch master cylinder in use piston is not easy to wear, does not have the compensate opening phenomenon of blocking, clutch build press and release reliable and stable, the clutch rate of fault is low, and long service life has guaranteed traffic safety.
Description of drawings
Fig. 1 is sectional view of the present utility model;
Among the figure: 1, Master cylinder body, 2, cavity, 3, piston, 4, push rod, 5, fluid chamber, 6, overflow hole, 7, valve body, 8, attachment hole, 9, fuel inlet neck, 10, passage, 11, guide cylinder, 12, guide pin bushing, 13, circular groove, 14, back-up ring, 15, oil nozzle seal ring, 16, piston packing, 17, the guide pin bushing seal ring, 18, clevis, 19, nut, 20, dust-proof cover.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described specifically:
Embodiment: a kind of centre valve formula clutch master cylinder (referring to accompanying drawing 1), comprise Master cylinder body 1, be provided with cavity 2 in the Master cylinder body 1, cavity is step axle shape, is provided with piston 3 in the cavity 2, and piston 3 is arranged on the path part position of cavity 2.Be provided with the fluid chamber 5 that is communicated with cavity 2 in the piston 3, fluid chamber 5 axially arranges.Radially be provided with the overflow hole 6 that is communicated with fluid chamber 5 on the piston 3, the large-diameter portion that overflow hole 6 is arranged on step axle shape cavity 2 divides and path crossover position partly.Overflow hole 6 runs through piston 3.Be provided with piston packing 16 between piston 3 outer walls and cavity 2 inwalls.Piston 3 one ends connect push rod 4, on the piston 3 be connected push rod 4 opposite ends and be provided with valve body 7 for break-make fluid chamber 5 and cavity 2.Be socketed with columnar guide cylinder 11 on the push rod 4, piston 3 parts closely are connected with guide cylinder 11 inwalls, and another part closely is connected with cavity 2 inwalls, and the end of guide cylinder 11 is near overflow hole 6 positions, and guide cylinder 11 external diameters are less than cavity 2 internal diameters.The aperture of cavity 2 close push rod 4 ends is greater than the aperture of the other end, closely be socketed with guide pin bushing 12 near the bigger diameter end position in the cavity 2, guide pin bushing 12 is socketed on the guide cylinder 11, cavity 2 inwalls are provided with circular groove 13, circular groove 13 is arranged on the end position near cavity 2, is provided with the back-up ring 14 for spacing guide pin bushing 12 in the circular groove 13.One end of guide pin bushing 12 is spacing on back-up ring 14, and the other end divides and path crossover position partly near the large-diameter portion of step axle shape cavity 2.Be provided with guide pin bushing seal ring 17 between guide cylinder 11 outer walls and guide pin bushing 12 inwalls.The end of push rod 4 is connected with U-shaped clevis 18, be connected with nut 19 near clevis 18 positions on the push rod 4, be connected with dust-proof cover 20 between nut 19 and the Master cylinder body 1, the part that push rod 4 and guide cylinder 11 are arranged between nut 19 and the Master cylinder body 1 is housed in the dust-proof cover 20.Master cylinder body 1 is provided with attachment hole 8, be connected with fuel inlet neck 9 on the attachment hole 8, attachment hole 8 is arranged on away from push rod 4 positions, is provided with oil nozzle seal ring 15 between attachment hole 8 and the fuel inlet neck 9, be provided with the path 10 that is communicated with attachment hole 8 in the Master cylinder body 1, passage and overflow hole 6 are communicated with.The large-diameter portion that the path 10 opening is arranged on step axle shape cavity 2 divides and the transitional surface of minor diameter part between dividing on, path 10 from attachment hole 8 to overflow hole 6 to being obliquely installed near cavity 2 axial directions.
Push rod is connecting clutch pedal, and when let slip the clutch, push rod promotes the piston reach, and valve body is opened, and fluid is transported to the fluid chamber from filler opening by attachment hole, passage, overflow hole, and the fluid in the fluid chamber is transported to by valve body and builds pressure in the cavity.Clutch wants adapted to have the clutch pedal device of bidirectional modulation power assistant spring in actual use, and the moment of torsion that pedal is in power assistant spring under the free state is enough to make push rod to reset in the power along the push rod direction.Stress-relief process is realized resetting of push rod by power assistant spring.The acting in conjunction by valve body and piston in use realizes building pressure and release, and sealing structure is reliable, and piston is not easy to wear, do not have the compensate opening phenomenon of blocking, clutch build press and release reliable and stable, the clutch rate of fault is low, long service life has guaranteed traffic safety.
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 (8)
1. centre valve formula clutch master cylinder, comprise Master cylinder body (1), be provided with cavity (2) in the Master cylinder body, be provided with piston (3) in the cavity, piston one end connects push rod (4), it is characterized in that, be provided with the fluid chamber (5) that is communicated with cavity in the piston, radially be provided with the overflow hole (6) that is communicated with the fluid chamber on the piston, on the piston be connected the push rod opposite end and be provided with valve body (7) for break-make fluid chamber and cavity, Master cylinder body is provided with attachment hole (8), is connected with fuel inlet neck (9) on the attachment hole, be provided with the passage (10) that is communicated with attachment hole in the Master cylinder body, passage and overflow hole are communicated with.
2. centre valve formula clutch master cylinder according to claim 1, it is characterized in that, be socketed with guide cylinder (11) on the push rod, a piston part closely is connected with the guide cylinder inwall, another part closely is connected with cavity inner wall, the end of guide cylinder is near the overflow hole position, and the guide cylinder external diameter is less than the cavity internal diameter.
3. centre valve formula clutch master cylinder according to claim 2, it is characterized in that, cavity is step axle shape, the aperture of the close push rod end of cavity is greater than the aperture of the other end, closely be socketed with guide pin bushing (12) near the bigger diameter end position in the cavity, guide pin bushing is socketed on the guide cylinder, and cavity inner wall is provided with circular groove (13), is provided with the back-up ring (14) for spacing guide pin bushing in the circular groove.
4. centre valve formula clutch master cylinder according to claim 3 is characterized in that, access portal is arranged on the large-diameter portion branch and the transitional surface between the minor diameter part branch of step axle shape cavity.
5. according to claim 1 or 2 or 3 or 4 described centre valve formula clutch master cylinders, it is characterized in that attachment hole is arranged on away from the push rod position, be provided with oil nozzle seal ring (15) between attachment hole and the fuel inlet neck.
6. according to claim 1 or 2 or 3 or 4 described centre valve formula clutch master cylinders, it is characterized in that passage is obliquely installed to close cavity axial direction from the attachment hole to the overflow hole.
7. centre valve formula clutch master cylinder according to claim 4 is characterized in that, is provided with piston packing (16) between piston outer wall and the cavity inner wall, is provided with guide pin bushing seal ring (17) between guide cylinder outer wall and the guide pin bushing inwall.
8. centre valve formula clutch master cylinder according to claim 4, it is characterized in that, the end of push rod is connected with clevis (18), be connected with nut (19) near the clevis position on the push rod, be connected with dust-proof cover (20) between nut and the Master cylinder body, the part that push rod and guide cylinder are arranged between nut and the Master cylinder body is housed in the dust-proof cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220720089 CN203067603U (en) | 2012-12-24 | 2012-12-24 | Central valve type clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220720089 CN203067603U (en) | 2012-12-24 | 2012-12-24 | Central valve type clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067603U true CN203067603U (en) | 2013-07-17 |
Family
ID=48766390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220720089 Expired - Fee Related CN203067603U (en) | 2012-12-24 | 2012-12-24 | Central valve type clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067603U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963960A (en) * | 2015-06-18 | 2015-10-07 | 奇瑞汽车股份有限公司 | Automobile clutch master cylinder |
| CN106704410A (en) * | 2016-11-30 | 2017-05-24 | 浙江吉利控股集团有限公司 | Clutch master pump |
| CN106938535A (en) * | 2017-05-09 | 2017-07-11 | 广东东晟密封科技有限公司 | A kind of full-automatic very smooth counting machine and its application method |
-
2012
- 2012-12-24 CN CN 201220720089 patent/CN203067603U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963960A (en) * | 2015-06-18 | 2015-10-07 | 奇瑞汽车股份有限公司 | Automobile clutch master cylinder |
| CN106704410A (en) * | 2016-11-30 | 2017-05-24 | 浙江吉利控股集团有限公司 | Clutch master pump |
| CN106938535A (en) * | 2017-05-09 | 2017-07-11 | 广东东晟密封科技有限公司 | A kind of full-automatic very smooth counting machine and its application method |
| CN106938535B (en) * | 2017-05-09 | 2023-07-11 | 广东东晟密封科技有限公司 | Full-automatic smooth counter and use method thereof |
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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: 20130717 Termination date: 20171224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |