CN103382972B - Clutch master cylinder - Google Patents
Clutch master cylinder Download PDFInfo
- Publication number
- CN103382972B CN103382972B CN201310238392.0A CN201310238392A CN103382972B CN 103382972 B CN103382972 B CN 103382972B CN 201310238392 A CN201310238392 A CN 201310238392A CN 103382972 B CN103382972 B CN 103382972B
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- Prior art keywords
- piston
- pump housing
- clutch
- master cylinder
- pressure chamber
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The present invention relates to automobile clutch field, it is therefore an objective to provide a kind of clutch master cylinder.A kind of clutch master cylinder, including the pump housing, piston, stretches in the pump housing for promoting the push rod of piston for the back-moving spring of piston reset and front end；Pressure chamber is constituted between front end and the pump housing of piston；Back-moving spring for piston reset；The gusset of described piston is provided with annular groove；Constitute for sap cavity between annular groove and the gusset of the pump housing；The pump housing is provided with the inlet opening connected with for sap cavity and the liquid outlet connected with pressure chamber；The pump housing is provided with the liquid-through hole that one end connects with inlet opening；When let slip the clutch piston is not in initial position, the other end of liquid-through hole connects with pressure chamber.During the work of this clutch master cylinder, liquid outlet pressure is easily set up and is backfilled pressure chamber speed with hydraulic oil.
Description
Technical field
The present invention relates to automobile clutch field, especially a kind of clutch master cylinder.
Background technology
Clutch master cylinder is attached to clutch foot plate the part being connected by oil pipe with clutch booster, and effect is to gather pedal travel information to make clutch realize separating by the effect of booster.A kind of automobile clutch master cylinder assembly of the disclosure of the invention of Chinese patent notification number CN102367844A, include cylinder body, piston it is slidably fitted with in cylinder body, the rear end of piston is fixed with spring base, is equipped with spring between spring base and cylinder body, and the front end of piston connects push rod, the end sleeve of spring base is equipped with dust cover, the front end of push rod is screwed with nut, and the sidewall of cylinder body has plugged together fuel inlet fitting, offers fuel feed hole in fuel inlet fitting.Traditional clutch master cylinder is deposited operationally liquid outlet pressure and is difficult to set up and the hydraulic oil backfill slow deficiency of pressure chamber, therefore, when designing a kind of work, liquid outlet pressure is easily set up and the clutch master cylinder of hydraulic oil backfill pressure chamber speed, becomes problem demanding prompt solution.
Summary of the invention
The invention aims to overcome current clutch master cylinder to deposit operationally liquid outlet pressure be difficult to set up with hydraulic oil backfill for the slow deficiency of sap cavity, it is provided that during a kind of work, liquid outlet pressure is easily set up and the clutch master cylinder of hydraulic oil backfill pressure chamber speed.
The concrete technical scheme of the present invention is:
A kind of clutch master cylinder, including the pump housing, piston, stretches in the pump housing for promoting the push rod of piston for the back-moving spring of piston reset and front end；Pressure chamber is constituted between front end and the pump housing of piston；The gusset of described piston is provided with annular groove；Constitute for sap cavity between annular groove and the gusset of the pump housing；The pump housing is provided with the inlet opening connected with for sap cavity and the liquid outlet connected with pressure chamber；The pump housing is provided with the liquid-through hole that one end connects with inlet opening；When let slip the clutch piston is not in initial position, the other end of liquid-through hole connects with pressure chamber.When this clutch master cylinder uses, let slip the clutch, push rod promotes piston reach to make liquid outlet cut off with the connection of pressure chamber, the pressure of pressure chamber rises, hydraulic oil is discharged the oil pocket of input clutch booster from liquid outlet and promotes disengaging yoke, clutch compressing disc is made to separate with clutch plate, it is achieved gear shifting action；Releasing the clutch pedal, under action of reset spring, move to initial position after piston is rapid, pressure chamber is connected with for sap cavity with inlet opening by liquid outlet, and the oil pocket decompression of clutch booster, clutch compressing disc engages with clutch plate.During the work of this clutch master cylinder, liquid outlet pressure is easily set up and is backfilled pressure chamber speed with hydraulic oil.
As preferably, described piston includes the principal piece being sequentially connected with from rear to front, leather cup section, block section, spring positioning section and the sealing cup being set in leather cup section；Annular groove is positioned at the outer gusset of principal piece；Back-moving spring is the taper stage clip of small end inner diameter and the diameter matches of spring positioning section；The small end of back-moving spring is enclosed within outside spring positioning section and is pressed against block section, and the big end of back-moving spring is pressed against the pump housing.Back-moving spring be small end inner diameter with the diameter matches of spring positioning section taper stage clip, taper stage clip radial stability is good and compression travel is big.
As preferably, described piston is not when let slip the clutch is in initial position, and the rear side of the liquid-through hole other end aligns with the front end face of sealing cup.Liquid outlet can be made rapidly during let slip the clutch to cut off with the connection of pressure chamber, and the pressure of pressure chamber rises rapidly.
As preferably, the point diameter that is shaped as of described sealing cup is more than the taper type of rear end diameter；The rear end face of sealing cup is provided with several and is uniformly distributed along the circumference and the groove through with outer gusset；The front end face of sealing cup is provided with the annular end slot that cross sectional shape is V-arrangement.Sealing cup is provided with groove and annular end slot can strengthen elasticity, when piston moves forward and backward, makes the outer gusset of sealing cup keep good fit with the gusset of the pump housing.
As preferably, the front end of described spring positioning section is provided with stroke limit bar.Limit piston deceleration stroke protection clutch booster without damage.
As preferably, the diameter of described liquid-through hole is 1:18 to 1:22 with the ratio of pump housing internal diameter.Take into account primary cup when hydraulic oil backfill supplies sap cavity speed and avoids piston movement to scratch.
As preferably, the diameter of described inlet opening is 1:5 to 1:7 with the ratio of pump housing internal diameter.Meet piston return to supplying sap cavity to pressure chamber rapid fluid infusion during initial position.
As preferably, the front end of described push rod is provided with the spherical pushing block cut somebody's hair, and the rear end of piston is provided with and the spherical spherical depression cut somebody's hair and mate；The rear end of the pump housing is provided with the trim ring being enclosed within outside push rod and pushing down pushing block.The front end of push rod is provided with the spherical pushing block cut somebody's hair, and the rear end of piston is provided with and the spherical spherical depression cut somebody's hair and mate, and push rod promotes piston will not produce interference.
Compared with prior art, the invention has the beneficial effects as follows: one. during the work of this clutch master cylinder, liquid outlet pressure is easily set up and is backfilled pressure chamber speed with hydraulic oil.Two. back-moving spring be small end inner diameter with the diameter matches of spring positioning section taper stage clip, taper stage clip radial stability is good and compression travel is big.Three. the rear side of the liquid-through hole other end aligns with the front end face of sealing cup, and liquid outlet can be made rapidly during let slip the clutch to cut off with the connection of pressure chamber, and the pressure of pressure chamber rises rapidly.Four. sealing cup is provided with groove and annular end slot can strengthen elasticity, when piston moves forward and backward, makes the outer gusset of sealing cup keep good fit with the gusset of the pump housing.Five. it is without damage that stroke limit bar limits piston deceleration stroke protection clutch booster.Six. the diameter of liquid-through hole is 1:18 to 1:22 with the ratio of pump housing internal diameter, takes into account primary cup when hydraulic oil backfill supplies sap cavity speed and avoids piston movement and scratches.Seven. the diameter of inlet opening is 1:5 to 1:7 with the ratio of pump housing internal diameter, meets piston return to supplying sap cavity to pressure chamber rapid fluid infusion during initial position.Eight. the front end of push rod is provided with the spherical pushing block cut somebody's hair, and the rear end of piston is provided with and the spherical spherical depression cut somebody's hair and mate, and push rod promotes piston will not produce interference.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is the top view of sealing cup in Fig. 1.
In figure: back-moving spring-1, the pump housing-2, inlet opening-21, liquid outlet-22, liquid-through hole-23, piston-3, annular groove-31, principal piece-32, leather cup section-33, block section-34, spring positioning section-35, sealing cup-36, groove-37, annular end slot-38, spherical depression-39, push rod-4, pushing block-41, spherical cut somebody's hair-42, pressure chamber-5, for sap cavity-6, stroke limit bar-7, trim ring-8.
Detailed description of the invention
Shown in below in conjunction with the accompanying drawings, the present invention is described further.
As shown in accompanying drawing 1, accompanying drawing 2: a kind of clutch master cylinder, stretch in the pump housing 2 for promoting the push rod 4 of piston 3 including the pump housing 2, piston 3, the back-moving spring 1 resetted for piston 3 and front end；Pressure chamber 5 is constituted between front end and the pump housing 2 of piston 3；The gusset of described piston 3 is provided with annular groove 31；Constitute for sap cavity 6 between the gusset of annular groove 31 and the pump housing 2；The pump housing 2 has the inlet opening 21 connected with for sap cavity 6 and the liquid outlet 22 connected with pressure chamber 5；The pump housing 2 has the liquid-through hole 23 that one end connects with inlet opening 21；When let slip the clutch piston 3 is not in initial position, the other end of liquid-through hole 23 connects with pressure chamber 5.
Described piston 3 includes the principal piece 32 being sequentially connected with from rear to front, leather cup section 33, block section 34, spring positioning section 35 and the sealing cup 36 being set in leather cup section 33；Annular groove 31 is positioned at the outer gusset of principal piece 32；Back-moving spring 1 is the taper stage clip that small end inner diameter coordinates with the diameter transition of spring positioning section 35；The small end of back-moving spring 1 is enclosed within outside spring positioning section 35 and is pressed against block section 34, and the big end of back-moving spring 1 is pressed against the pump housing 2.In the present embodiment, the big end of back-moving spring 1 is pressed against the front end of pressure chamber 5.
Described piston 3 is not when let slip the clutch is in initial position, and the rear side of liquid-through hole 23 other end aligns with the front end face of sealing cup 36.
The point diameter that is shaped as of described sealing cup 36 is more than the taper type of rear end diameter；The rear end face of sealing cup 36 has eight and is uniformly distributed along the circumference and the groove 37 through with outer gusset；The front end face of sealing cup 36 has the annular end slot 38 that cross sectional shape is V-arrangement.
The front end of described spring positioning section 35 has stroke limit bar 7.
The diameter of described liquid-through hole 23 is 1:20 with the ratio of the pump housing 2 internal diameter.
The diameter of described inlet opening 21 is 1:6 with the ratio of the pump housing 2 internal diameter.
The front end of described push rod 4 have with spherical cut somebody's hair 42 pushing block 41, the rear end of piston 3 has and the spherical depression 39 of spherical 42 matched in clearance of cutting somebody's hair；The rear end of the pump housing 2 has the trim ring 8 being enclosed within outside push rod 4 and pushing down pushing block 41.
When this clutch master cylinder uses, let slip the clutch, push rod 4 promotes piston 3 reach to make liquid outlet 22 cut off with the connection of pressure chamber 5, the pressure of pressure chamber 5 rises, hydraulic oil is discharged the oil pocket of input clutch booster from liquid outlet 22 and promotes disengaging yoke, clutch compressing disc is made to separate with clutch plate, it is achieved gear shifting action；Releasing the clutch pedal, under back-moving spring 1 acts on, move to initial position after piston 3 is rapid, pressure chamber 5 is connected with for sap cavity 6 with inlet opening 21 by liquid outlet 22, and the oil pocket decompression of clutch booster, clutch compressing disc engages with clutch plate.
The invention has the beneficial effects as follows: during the work of this clutch master cylinder, liquid outlet pressure is easily set up and backfilled pressure chamber speed with hydraulic oil.Back-moving spring be small end inner diameter with the diameter matches of spring positioning section taper stage clip, taper stage clip radial stability is good and compression travel is big.The rear side of the liquid-through hole other end aligns with the front end face of sealing cup, and liquid outlet can be made rapidly during let slip the clutch to cut off with the connection of pressure chamber, and the pressure of pressure chamber rises rapidly.Sealing cup is provided with groove and annular end slot can strengthen elasticity, when piston moves forward and backward, makes the outer gusset of sealing cup keep good fit with the gusset of the pump housing.It is without damage that stroke limit bar limits piston deceleration stroke protection clutch booster.The diameter of liquid-through hole is 1:20 with the ratio of pump housing internal diameter, takes into account primary cup when hydraulic oil backfill supplies sap cavity speed and avoids piston movement and scratches.The diameter of inlet opening is 1:6 with the ratio of pump housing internal diameter, meets piston return to supplying sap cavity to pressure chamber rapid fluid infusion during initial position.The front end of push rod is provided with the spherical pushing block cut somebody's hair, and the rear end of piston is provided with and the spherical spherical depression cut somebody's hair and mate, and push rod promotes piston will not produce interference.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not regarded as a departure from the scope of the present invention.All such technical staff to described field obviously revise, and are included within the scope of present claims.
Claims (6)
1. a clutch master cylinder, including the pump housing, piston, stretches in the pump housing for promoting the push rod of piston for the back-moving spring of piston reset and front end；Pressure chamber is constituted between front end and the pump housing of piston；It is characterized in that: the gusset of described piston is provided with annular groove；Constitute for sap cavity between annular groove and the gusset of the pump housing；The pump housing is provided with the inlet opening connected with for sap cavity and the liquid outlet connected with pressure chamber；The pump housing is provided with the liquid-through hole that one end connects with inlet opening；When let slip the clutch piston is not in initial position, the other end of liquid-through hole connects with pressure chamber；Described piston includes the principal piece being sequentially connected with from rear to front, leather cup section, block section, spring positioning section and the sealing cup being set in leather cup section；Annular groove is positioned at the outer gusset of principal piece；Back-moving spring is the taper stage clip that small end inner diameter coordinates with the diameter transition of spring positioning section；The small end of back-moving spring is enclosed within outside spring positioning section and is pressed against block section, and the big end of back-moving spring is pressed against the front end of pressure chamber；Described piston is not when let slip the clutch is in initial position, and the rear side of the liquid-through hole other end aligns with the front end face of sealing cup.
Clutch master cylinder the most according to claim 1, is characterized in that: the point diameter that is shaped as of described sealing cup is more than the taper type of rear end diameter；The rear end face of sealing cup is provided with several and is uniformly distributed along the circumference and the groove through with outer gusset；The front end face of sealing cup is provided with the annular end slot that cross sectional shape is V-arrangement.
Clutch master cylinder the most according to claim 1 and 2, is characterized in that: the front end of described spring positioning section is provided with stroke limit bar.
Clutch master cylinder the most according to claim 1 and 2, is characterized in that: the diameter of described liquid-through hole is 1:18 to 1:22 with the ratio of pump housing internal diameter.
Clutch master cylinder the most according to claim 1 and 2, is characterized in that: the diameter of described inlet opening is 1:5 to 1:7 with the ratio of pump housing internal diameter.
Clutch master cylinder the most according to claim 1 and 2, is characterized in that: the front end of described push rod is provided with the spherical pushing block cut somebody's hair, and the rear end of piston is provided with and the spherical spherical depression cut somebody's hair and mate；The rear end of the pump housing is provided with the trim ring being enclosed within outside push rod and pushing down pushing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238392.0A CN103382972B (en) | 2013-06-14 | 2013-06-14 | Clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238392.0A CN103382972B (en) | 2013-06-14 | 2013-06-14 | Clutch master cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103382972A CN103382972A (en) | 2013-11-06 |
| CN103382972B true CN103382972B (en) | 2016-08-17 |
Family
ID=49490855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310238392.0A Expired - Fee Related CN103382972B (en) | 2013-06-14 | 2013-06-14 | Clutch master cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN103382972B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090276A (en) * | 2015-09-09 | 2015-11-25 | 安徽江淮汽车股份有限公司 | Clutch master cylinder structure |
| CN105179683A (en) * | 2015-09-28 | 2015-12-23 | 陕西法士特齿轮有限责任公司 | Error-proof adjusting assembly of AMT clutch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6607062B1 (en) * | 2002-02-19 | 2003-08-19 | Torque Traction Technologies, Inc. | Piston assembly for hydraulically actuated friction coupling |
| FR2823803B1 (en) * | 2001-04-23 | 2005-11-11 | Valeo | ELECTRO-HYDRAULIC ACTUATOR, IN PARTICULAR FOR CONTROLLING A CLUTCH OF A MOTOR VEHICLE |
| CN201866134U (en) * | 2010-11-23 | 2011-06-15 | 陈学武 | Pressure-regulating overflow total pump for clutch booster |
| CN201944146U (en) * | 2011-01-04 | 2011-08-24 | 浙江吉利汽车研究院有限公司 | Clutch master pump with low noise |
| CN202441759U (en) * | 2012-01-09 | 2012-09-19 | 瑞立集团瑞安汽车零部件有限公司 | Clutch main pump with power accumulator |
| CN203322096U (en) * | 2013-06-14 | 2013-12-04 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
-
2013
- 2013-06-14 CN CN201310238392.0A patent/CN103382972B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2823803B1 (en) * | 2001-04-23 | 2005-11-11 | Valeo | ELECTRO-HYDRAULIC ACTUATOR, IN PARTICULAR FOR CONTROLLING A CLUTCH OF A MOTOR VEHICLE |
| US6607062B1 (en) * | 2002-02-19 | 2003-08-19 | Torque Traction Technologies, Inc. | Piston assembly for hydraulically actuated friction coupling |
| CN201866134U (en) * | 2010-11-23 | 2011-06-15 | 陈学武 | Pressure-regulating overflow total pump for clutch booster |
| CN201944146U (en) * | 2011-01-04 | 2011-08-24 | 浙江吉利汽车研究院有限公司 | Clutch master pump with low noise |
| CN202441759U (en) * | 2012-01-09 | 2012-09-19 | 瑞立集团瑞安汽车零部件有限公司 | Clutch main pump with power accumulator |
| CN203322096U (en) * | 2013-06-14 | 2013-12-04 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
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| Publication number | Publication date |
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| CN103382972A (en) | 2013-11-06 |
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Granted publication date: 20160817 Termination date: 20180614 |