CN105090276A - Clutch master cylinder structure - Google Patents
Clutch master cylinder structure Download PDFInfo
- Publication number
- CN105090276A CN105090276A CN201510571794.1A CN201510571794A CN105090276A CN 105090276 A CN105090276 A CN 105090276A CN 201510571794 A CN201510571794 A CN 201510571794A CN 105090276 A CN105090276 A CN 105090276A
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- CN
- China
- Prior art keywords
- push rod
- piston
- ring
- pump push
- clutch
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- 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.)
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Abstract
The invention belongs to the technical field of automobile components, and provides a clutch master pump structure. The clutch master pump structure comprises a master pump push rod pushing a piston to move and a check ring installed at the end, close to the master pump push rod, of a cylinder. A conical groove is formed in the end, close to the piston, of the check ring. The master pump push rod comprises a push rod body and a ball head. The piston side of the ball head abuts against the piston. The check ring side is provided with a conical structure matched with the conical groove. The conical structure is inserted in the conical groove. The push rod body penetrates the check ring to be connected to the check ring side. The conical structure is arranged on the master pump push rod, the check ring is provided with the conical groove, and by means of the cooperation of conical surfaces, the master pump push rod is limited and is prevented from swinging; and thus the pressure and friction force between the piston and the cylinder are reduced, abrasion between the piston and the cylinder is reduced, the maser pump push rod moves more smoothly, and the performance of a clutch is guaranteed.
Description
Technical field
The invention belongs to technical field of automobile components, be specifically related to a kind of clutch general pump structure.
Background technique
Clutch master cylinder is the part being connected to clutch foot plate and being connected with clutch booster by oil pipe.During gearshift, driver first need step on clutch pedal, and clutch general pump push rod promotes piston makes oil pressure in clutch system raise, disengaging yoke is promoted again by clutch slave cylinder push rod, disengaging yoke promotes release bearing, and release bearing promotes clutch diaphragm spring, and then realizes being separated.
Existing clutch general pump structure as Figure 1-Figure 2, comprises cylinder body 103, and cylinder body 103 is inserted with piston 104 along in its axial sliding movement, and piston 104 is provided with ball recess; Also comprise total pump push rod 101, total pump push rod 101 is provided with bulb, and the diameter of bulb is little compared with the diameter of ball recess, and bulb is resisted against ball recess; In order to prevent the disengaging of total pump push rod 101 and cylinder body 103, cylinder body 103 is provided with loose rib 107 and jump ring 106 near one end of total pump push rod 101; Between cylinder body 103 and piston 104, return spring 105 is also installed; In order to avoid the impact on clutch general pump such as dirt, between cylinder body 103 and total pump push rod 101, be also provided with dirt-proof boot 102; Total pump push rod 101 passes loose rib 107, jump ring 106 and dirt-proof boot 102 away from one end of piston 104, and leaves gap along the axis of cylinder body 103 between spheroid and loose rib 107.
Existing clutch general pump structure is owing to leaving gap between the center hole of loose rib 107 and total pump push rod 101, when return spring 105 is in free state, total pump push rod 101 can because the effect of self gravitation can swing in ball recess, thus cause the axis of total pump push rod 101 and the axis of cylinder body 103 to be an angle, if this angle is too large, after clutch general pump is installed, the angle that total pump push rod 101 promotes the direction of the Driving force of piston and the axis of cylinder body 103 is too large, piston 104 is caused to increase with the radial pressure of the inwall of cylinder body 103, the resistance to motion of piston 104 increases, affect the performance of clutch, and radial pressure increase makes piston 104 and cylinder body 103 be easy to wear and tear, and shortens the working life of clutch general pump.
Summary of the invention
The object of this invention is to provide a kind of clutch general pump structure, by total pump push rod, cone structure is set, back-up ring arranges cone tank, by cone match, realize the spacing of total pump push rod, avoid it to swing, thus reduce pressure and the frictional force of piston and cylinder body, reduce the wearing and tearing between piston and cylinder body, make master cylinder pushrod movement more smooth and easy, ensure the performance of clutch.
To achieve these goals, the invention provides following technological scheme:
A kind of clutch general pump structure, comprises total pump push rod of promotion piston movement and is installed on the back-up ring of cylinder body near one end of described total pump push rod; Described back-up ring is provided with cone tank near one end of described piston; Described total pump push rod comprises putter body and bulb, the piston side of described bulb is resisted against described piston, back-up ring side is provided with the cone structure suitable with described cone tank, and described cone structure is plugged in described cone tank, and described putter body is connected to described back-up ring side through described back-up ring.
Preferably, described back-up ring is tapered collar.
Preferably, the periphery of the large end of described tapered collar is also provided with flange, and described flange is stopped at jump ring, and described jump ring is connected in described cylinder body.
Preferably, radially gap is left between described putter body and described back-up ring.
Preferably, described piston side is spherical structure, and described piston is provided with spherical groove near the side of described bulb, and the radius of described spherical groove equals the radius of described spherical structure, and described spherical structure is resisted against described spherical groove.
Preferably, be also provided with transition body between described piston side and described back-up ring side, the diameter of described transition body is less than the large footpath of described cone tank.
Preferably, described total pump push rod one machine shaping.
Beneficial effect of the present invention is:
The total pump push rod of the present invention arranges cone structure, back-up ring arranges cone tank, cone structure is plugged in cone tank, pass through cone match, realize the spacing of total pump push rod, the swing of total pump push rod when return spring free state can be prevented, thus it is coaxial with cylinder body when ensureing that total pump push rod is installed, when total pump push rod promotes piston movement, radial pressure between piston and cylinder body reduces, and the frictional force of piston and cylinder body is reduced, thus reduces the wearing and tearing between piston and cylinder body, make master cylinder pushrod movement more smooth and easy, ensure the performance of clutch.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art clutch general pump structure;
Fig. 2 is the partial structurtes schematic diagram of prior art clutch general pump structure;
Fig. 3 is the schematic diagram of a kind of embodiment of clutch general pump structure provided by the present invention;
Fig. 4 is the structural representation of the total pump push rod of a kind of embodiment of clutch general pump structure provided by the present invention;
Fig. 5 is the structural representation of a kind of embodiment back-up ring of clutch general pump structure provided by the present invention.
Reference character:
In Fig. 1-Fig. 2:
101, total pump push rod, 102, dirt-proof boot, 103, cylinder body, 104, piston, 105, return spring, 106, jump ring, 107, loose rib;
In Fig. 2-Fig. 5:
201, total pump push rod, 202, dirt-proof boot, 203, cylinder body, 204, jump ring, 205, back-up ring, 206, piston, 207, putter body, 208, back-up ring side, 209, piston side, 210, transition body, 211, center hole, 212, cone tank, 213, flange.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Please refer to Fig. 2-Fig. 5, in a kind of embodiment, clutch general pump structure provided by the present invention, comprises total pump push rod 201 of promotion piston 206 motion and is installed on the back-up ring 205 of cylinder body 203 near one end of total pump push rod 201; Back-up ring 205 is provided with cone tank 212 near one end of piston 203; Total pump push rod 201 comprises putter body 207 and bulb, the piston side 209 of bulb is resisted against piston 206, back-up ring side 208 is provided with the cone structure suitable with cone tank 212, and cone structure is plugged in cone tank 212, and putter body 207 is connected to back-up ring side 208 through back-up ring 205.
The total pump push rod 201 of above-described embodiment arranges cone structure, back-up ring 205 arranges cone tank 212, cone structure is plugged in cone tank 212, pass through cone match, realize the spacing of total pump push rod 201, the swing of total pump push rod 201 when return spring free state can be prevented, thus it is coaxial with cylinder body 203 when ensureing that total pump push rod 201 is installed, total pump push rod 201 promote piston 206 move time, radial pressure between piston 206 and cylinder body 203 reduces, piston 206 is reduced with the frictional force of cylinder body 203, thus the wearing and tearing reduced between piston 206 and cylinder body 203, total pump push rod 201 is made to move more smooth and easy, ensure the performance of clutch.
Particularly, cylinder body 203 is fitted with piston 206 along its axial sliding movement, is also provided with return spring between one end of piston 206 and cylinder body 203, and the other end and total pump push rod 201 offset, and total pump push rod 201 promotes the axis axial motion of piston 201 along cylinder body 203; In order to prevent the disengaging of total pump push rod 201 and cylinder body 203, cylinder body 203 is provided with back-up ring 205 and jump ring 204 near one end of total pump push rod 201; Also return spring is installed between cylinder body 203 and piston 206; In order to avoid the impact on clutch general pump such as dirt, between cylinder body 203 and total pump push rod 201, be also provided with dirt-proof boot 202; Total pump push rod 201 passes back-up ring 205, jump ring 204 and dirt-proof boot 202 away from one end of piston 206.When return spring is in free state, cone structure is inserted and against cone tank 212, due to the cooperation of conical surface, total pump push rod 201 cannot be swung.
Back-up ring 205 is tapered collar.The convenient processing of tapered collar structure.
The wall thickness of preferred tapered collar is equal, and this structure is convenient to processing, and makes the thickness of back-up ring 205 equal, waits wall thickness can improve the intensity of back-up ring 205, ensures its stressed uniformity, the distortion preventing it from causing due to unbalance stress, extend its working life.Particularly, back-up ring 205 entirety is tapered collar, and cone tank 212 is the inwall of tapered collar.The wall thickness of tapered collar also can be unequal.
Back-up ring 205 also can be other structure, as being plane structure or spheric structure away from the side of bulb.
The periphery of the large end of tapered collar is also provided with flange 213, and flange 213 is stopped at jump ring 204, and jump ring 204 is connected in cylinder body 203.Back-up ring 205 and the area of contact of jump ring 204 can be increased by flange 213, ensure the reliability that back-up ring 205 is installed.Jump ring 204 also can directly and the conical surface of tapered collar fit.
Radially gap is left between putter body 207 and back-up ring 205.By being provided with gap between putter body 207 and back-up ring 205, the slip resistance of total pump push rod 201 can be reduced, making the motion of piston 206 more smooth and easy.Back-up ring 205 is provided with center hole 211, and putter body 207, through center hole 211, leaves gap between the inwall of center hole 211 and putter body 207.The structure of center hole 211 can be cylindrical hole, can be also conical bore, or be other profiled holes.
Piston side 209 is spherical structure, and piston 206 is provided with spherical groove near the side of bulb, and the radius of spherical groove equals the radius of spherical structure, and spherical structure is resisted against spherical groove.By waiting the spherical groove of radius and coordinating of spherical structure, can limit the motion of total pump push rod 201 further, when making return spring be in free state, total pump push rod 201 is coaxial with cylinder body 203, ensures the precision that clutch general pump is installed; This structure is convenient to processing simultaneously, and can the area of contact of bulb and piston 206 be made maximum in the limited space of cylinder body 203.
Also can piston side 209 be spherical groove, piston 206 be spherical structure near the side of bulb, but this kind of structure is due to the restriction by bulb radial dimension, and the area of contact of spherical groove and spherical structure is limited; Also piston side 209 plane structure can be near the side of bulb, the two plane contact with piston 206; Or piston side 209 and piston 206 are plane structure near the side one of bulb, and another one is spheric structure.
Also be provided with transition body 210 between piston side 209 and back-up ring side 208, the diameter of transition body 210 is less than the large footpath of cone tank 212.Make the processing of bulb more convenient by transition body 210, and can prevent piston side 209 and cone tank 212 from interfering.Bulb also only can comprise piston side 209 and back-up ring side 208.
The machine shaping of total pump push rod 201 one.I.e. putter body 207, back-up ring side 208, transition body 210 and the machine shaping of piston side 209 4 one, to improve the intensity of total pump push rod 201.Four also can be only adjacent one, the processing of both or three in one, then to be connected together with remaining a few person.
Although the present invention is described in conjunction with above embodiment, but the present invention is not limited to above-described embodiment, and only by the restriction of claim, those of ordinary skill in the art can easily modify to it and change, but do not leave essential idea of the present invention and scope.
Claims (7)
1. a clutch general pump structure, comprises total pump push rod of promotion piston movement and is installed on the back-up ring of cylinder body near one end of described total pump push rod; It is characterized in that, described back-up ring is provided with cone tank near one end of described piston; Described total pump push rod comprises putter body and bulb, the piston side of described bulb is resisted against described piston, back-up ring side is provided with the cone structure suitable with described cone tank, and described cone structure is plugged in described cone tank, and described putter body is connected to described back-up ring side through described back-up ring.
2. clutch general pump structure according to claim 1, is characterized in that, described back-up ring is tapered collar.
3. clutch general pump structure according to claim 2, is characterized in that, the periphery of the large end of described tapered collar is also provided with flange, and described flange is stopped at jump ring, and described jump ring is connected in described cylinder body.
4. clutch general pump structure according to claim 1, is characterized in that, radially leaves gap between described putter body and described back-up ring.
5. the clutch general pump structure according to any one of claim 1-4, it is characterized in that, described piston side is spherical structure, described piston is provided with spherical groove near the side of described bulb, the radius of described spherical groove equals the radius of described spherical structure, and described spherical structure is resisted against described spherical groove.
6. clutch general pump structure according to claim 1, is characterized in that, is also provided with transition body between described piston side and described back-up ring side, and the diameter of described transition body is less than the large footpath of described cone tank.
7. clutch general pump structure according to claim 1, is characterized in that, the machine shaping of described total pump push rod one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510571794.1A CN105090276A (en) | 2015-09-09 | 2015-09-09 | Clutch master cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510571794.1A CN105090276A (en) | 2015-09-09 | 2015-09-09 | Clutch master cylinder structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090276A true CN105090276A (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510571794.1A Pending CN105090276A (en) | 2015-09-09 | 2015-09-09 | Clutch master cylinder structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090276A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909691A (en) * | 2018-07-19 | 2018-11-30 | 宁波拓普智能刹车系统有限公司 | A kind of pedal input rod structure of automobile brake force aid system |
| CN116753249A (en) * | 2023-06-28 | 2023-09-15 | 瑞安市恒旭汽车配件有限公司 | Wear-resisting clutch master cylinder assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997013671A1 (en) * | 1995-10-07 | 1997-04-17 | INA Wälzlager Schaeffler oHG | Master cylinder |
| CN103382972A (en) * | 2013-06-14 | 2013-11-06 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
| CN203847589U (en) * | 2014-03-14 | 2014-09-24 | 宁波神丰汽车部件有限公司 | Protective structure of clutch master cylinder |
| CN104179830A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Return device of swing type clutch slave cylinder |
| CN204921763U (en) * | 2015-09-09 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Clutch master cylinder structure |
-
2015
- 2015-09-09 CN CN201510571794.1A patent/CN105090276A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997013671A1 (en) * | 1995-10-07 | 1997-04-17 | INA Wälzlager Schaeffler oHG | Master cylinder |
| CN103382972A (en) * | 2013-06-14 | 2013-11-06 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
| CN203847589U (en) * | 2014-03-14 | 2014-09-24 | 宁波神丰汽车部件有限公司 | Protective structure of clutch master cylinder |
| CN104179830A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Return device of swing type clutch slave cylinder |
| CN204921763U (en) * | 2015-09-09 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Clutch master cylinder structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909691A (en) * | 2018-07-19 | 2018-11-30 | 宁波拓普智能刹车系统有限公司 | A kind of pedal input rod structure of automobile brake force aid system |
| CN108909691B (en) * | 2018-07-19 | 2024-02-23 | 宁波域想线控底盘有限公司 | Pedal input rod structure of automobile brake booster system |
| CN116753249A (en) * | 2023-06-28 | 2023-09-15 | 瑞安市恒旭汽车配件有限公司 | Wear-resisting clutch master cylinder assembly |
| CN116753249B (en) * | 2023-06-28 | 2024-05-03 | 瑞安市恒旭汽车配件有限公司 | Wear-resisting clutch master cylinder assembly |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151125 |