CN113565894A - Clutch master cylinder assembly and vehicle - Google Patents
Clutch master cylinder assembly and vehicle Download PDFInfo
- Publication number
- CN113565894A CN113565894A CN202110831679.9A CN202110831679A CN113565894A CN 113565894 A CN113565894 A CN 113565894A CN 202110831679 A CN202110831679 A CN 202110831679A CN 113565894 A CN113565894 A CN 113565894A
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- CN
- China
- Prior art keywords
- piston
- master cylinder
- bush
- clutch
- cylinder assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
- F16D2048/023—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by pedal actuation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a clutch master cylinder assembly and a vehicle. The inner side of the piston is provided with a compression rod and a spring, and the spring is sleeved on the compression rod. The junction cover of compression pole and piston is equipped with the leather collar, still is equipped with the bush in the cavity, and the lateral wall of bush and the inner wall of the pump body are laminated mutually, and the inside wall and the leather collar of bush cooperate. The invention adopts the structural design of variable cylinder diameter and sectional area, can provide a variable lever ratio for the system in the whole stroke process, and can reduce the maximum operating force of the pedal through reasonable matching. And a bush is additionally arranged in the pump body of the clutch master cylinder, so that the leather ring and the bush are in contact sliding, and the abrasion and abnormal sound are reduced. For the vehicle type with large pedal force, the pedal force can be reduced to a certain extent, and the operation comfort of a driver is improved.
Description
Technical Field
The invention relates to the technical field of automobile clutches, in particular to a clutch master cylinder assembly and a vehicle.
Background
The clutch master cylinder assembly is a part which is connected and installed on a clutch pedal and is connected with a clutch slave cylinder or a clutch booster through an oil pipe, is used for collecting stroke information of the clutch pedal, enables the clutch to be separated and combined through the action of the clutch slave cylinder or the clutch booster, and is a part which is used for converting mechanical force of a person operating the clutch pedal into hydraulic pressure in a hydraulic clutch control system.
The design task of clutch operation is as follows: an appropriate clutch operating lever ratio is designed to meet the pedal force requirement. The cylinder diameter of the existing clutch master cylinder is generally designed with a fixed section, and due to the characteristics of a common diaphragm spring clutch, the separating force is a change curve, the corresponding pedal force is also the change curve, and the pedal force is relatively large at the highest point, so that a driver can intuitively feel the pedal force in the operation process. The prior art master cylinder construction is a fixed cylinder diameter and cross-sectional area master cylinder construction that provides a fixed leverage ratio to the system throughout the stroke. And the leather ring of the master cylinder is in direct contact friction with the metal cylinder body, so abnormal sound and abrasion are caused.
Therefore, how to provide a clutch master cylinder assembly which can change the clutch operating lever ratio, reduce the pedal force to a certain extent and improve the operating comfort of a driver becomes a technical problem which needs to be solved in the field.
Disclosure of Invention
The invention aims to provide a clutch master cylinder assembly and a vehicle, which can change the clutch operating lever ratio, reduce the pedal force to a certain extent and improve the operating comfort of a driver.
According to a first aspect of the invention, a clutch master cylinder assembly is provided, which comprises a pump body and a push rod, wherein a cavity is arranged in the pump body, a piston is arranged in the cavity, the outer side of the piston is abutted against the push rod, and the inner side of the piston can slide along the cavity under the pushing of the push rod;
a compression rod and a spring are arranged on the inner side of the piston, and the spring is sleeved on the compression rod; the compression pole with the junction cover of piston is equipped with the leather collar, still be equipped with the bush in the cavity, the lateral wall of bush with the inner wall of the pump body is laminated mutually, just the inside wall of bush with the leather collar cooperatees.
Optionally, in the clutch master cylinder assembly according to the present invention, the bushing is made of nylon.
Optionally, according to the clutch master cylinder assembly of the present invention, a groove is disposed in a center of an outer side of the piston, and the push rod abuts against the groove.
Optionally, in the clutch master cylinder assembly according to the present invention, the bottom of the groove is spherical, the end of the push rod is spherical, and the spherical portions have the same diameter.
Optionally, according to the master clutch assembly of the present invention, the rubber ring is still in contact with the bushing when the piston is in the extreme position away from the bushing.
According to another aspect of the present invention, there is provided a vehicle comprising a master clutch pump assembly according to any one of the above embodiments.
Optionally, according to the vehicle of the present invention, the clutch master cylinder assembly of the vehicle satisfies the following relation:
clutch operating lever ratio (S)2/S1)*(r1/r2)*(b1/b2)；
Wherein S is1Is the hydraulic area of the master pump, S2Is the hydraulic area of the cylinder, r1/r2Is the pedal lever ratio, b1/b2Is the lever ratio of the shifting fork.
The clutch master cylinder assembly provided by the invention adopts a structural design with variable cylinder diameter and sectional area, can provide a variable lever ratio for a system in the whole stroke process, and can reduce the maximum operating force of a pedal through reasonable matching. And a bush is additionally arranged in the pump body of the clutch master cylinder, so that the leather ring and the bush are in contact sliding, the occurrence of abrasion and abnormal sound is reduced, and the whole structure is completely integrated in the master cylinder without other external elements. The technical scheme of the invention can be adopted for the vehicle type with large pedal force, the pedal force can be reduced to a certain extent, and the operation comfort of a driver is improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a clutch master cylinder assembly according to the present disclosure;
FIG. 2 is a schematic structural view of a clutch and pedal transmission assembly of the vehicle disclosed in the present invention;
fig. 3 is a graph showing the variation of pedal force with pedal stroke in the present invention.
Description of reference numerals: 1-a pump body; 2-a bushing; 3-leather collar; 4-a piston; 5-a push rod; 6 compressing the rod; 7-a spring; s1-total pump hydraulic area; s2-cylinder hydraulic area; r is1/r2-a pedal lever ratio; b1/b2-a fork lever ratio; f1-pedal force.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to the figure 1, the invention provides a clutch master cylinder assembly, which comprises a pump body 1 and a push rod 5, wherein a cavity is arranged in the pump body 1, a piston 4 is arranged in the cavity, the outer side of the piston 4 is abutted against the push rod 5, and the inner side of the piston can slide along the cavity under the pushing of the push rod 5.
A compression rod 6 and a spring 7 are arranged on the inner side of the piston 4, and the spring 7 is sleeved on the compression rod 6; the junction cover of compression rod 6 and piston 4 is equipped with leather collar 3, still is equipped with bush 2 in the cavity, and the lateral wall of bush 2 laminates with the inner wall of the pump body 1 mutually, and the inside wall of bush 2 cooperatees with leather collar 3.
The clutch master cylinder assembly provided by the invention adopts a structural design with variable cylinder diameter and sectional area, can provide a variable lever ratio for a system in the whole stroke process, and can reduce the maximum operating force of a pedal through reasonable matching. And a bush 2 is additionally arranged in the pump body 1 of the clutch master cylinder, so that the leather ring 3 is in contact with the bush 2 to slide, the generation of abrasion and abnormal sound is reduced, and the whole structure is completely integrated in the master cylinder without other external elements.
Further, the bush 2 is made of nylon, and abrasion and abnormal sound can be reduced when the bush slides with the leather ring 3.
Furthermore, a groove is formed in the center of the outer side of the piston 4, the push rod 5 abuts against the groove, the matching relation between the push rod 5 and the piston 4 is improved, and meanwhile the acting force of the push rod 5 is always kept in the center of the piston 4.
Still further, the bottom of recess is the sphere, and the tip of push rod 5 is the sphere, and the diameter of both parts that are the sphere is equal. The spherical recess and the push rod 5 optimize this effect.
Further, when the piston 4 is in an extreme position away from the liner 2, the apron 3 is still in contact with the liner 2. The leather ring 3 of the invention is required to be always in contact with the lining 2, and the sliding property is ensured and the sealing property is also ensured.
According to fig. 2, the invention also provides a vehicle comprising the clutch master cylinder assembly in any one of the above embodiments.
Optionally, according to the vehicle of the present invention, the clutch master cylinder assembly of the vehicle satisfies the following relation:
clutch operating lever ratio (S)2/S1)*(r1/r2)*(b1/b2)；
Wherein S is1Is the hydraulic area of the master pump, S2Is the hydraulic area of the cylinder, r1/r2Is the pedal lever ratio, b1/b2Is the lever ratio of the shifting fork.
As can be seen from fig. 1 and fig. 2, when the push rod 5 of the clutch master cylinder moves to the left, the piston 4 moves to the left together with the push rod, and during the movement to the left, the contact section of the leather ring 3 and the nylon-structured bush 2 changes along with the change of the inner section of the bush 2, so that the generated hydraulic area also changes along with the push of the piston 4, and the lever ratio (the hydraulic area S of the wheel cylinder) is controlled according to the clutch (the hydraulic area S of the wheel cylinder)2Hydraulic area of master cylinder S1) The pedal lever ratio and the shifting fork lever ratio adopt a clutch master cylinder with a cylinder diameter of variable cross section, the clutch operating lever ratio is changed along with the clutch master cylinder, and meanwhile, the cross section area of the master cylinder is the smallest when the clutch is at the maximum separating force in the change of the cross section, so that the operating lever ratio of the clutch system is reached, and the maximum pedal force can be reduced to the maximum extent. The pair of the pedal force curve with the pedal stroke before and after implementing the technical scheme is shown in figure 3.
From a comparison in fig. 3, it can be seen that the maximum pedal force N of the master cylinder pump in the present invention2Maximum pedal force N of master cylinder with equal cylinder diameter1The reduction is realized to a certain extent, and the maximum reduction can reach about 17% through the implemented design scheme. The technical scheme of the invention can be adopted for the vehicle type with large pedal force, the pedal force can be reduced to a certain extent, and the operation comfort of a driver is improved. Meanwhile, the lining 2 made of the nylon material can reduce the friction abnormal noise and the friction force.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. The clutch master cylinder assembly is characterized by comprising a pump body (1) and a push rod (5), wherein a cavity is formed in the pump body (1), a piston (4) is arranged in the cavity, the outer side of the piston (4) is abutted against the push rod (5), and the inner side of the piston (4) can slide along the cavity under the pushing of the push rod (5);
a compression rod (6) and a spring (7) are arranged on the inner side of the piston (4), and the spring (7) is sleeved on the compression rod (6); the compression rod (6) with the junction cover of piston (4) is equipped with leather collar (3), still be equipped with bush (2) in the cavity, the lateral wall of bush (2) with the inner wall of the pump body (1) is laminated mutually, just the inside wall of bush (2) with leather collar (3) cooperate.
2. Clutch master cylinder assembly according to claim 1, characterized in that the bushing (2) is made of nylon.
3. Clutch master cylinder assembly according to claim 1, characterized in that a recess is provided in the centre of the outside of the piston (4), against which recess the push rod (5) abuts.
4. Clutch master cylinder assembly according to claim 3, characterized in that the bottom of the groove is spherical, the end of the push rod (5) is spherical and the spherical parts have the same diameter.
5. Clutch master cylinder assembly according to claim 1, characterized in that the leather collar is still in contact with the bushing (2) when the piston (4) is in an extreme position away from the bushing (2).
6. A vehicle comprising a master clutch pump assembly as claimed in any one of claims 1 to 5.
7. The vehicle of claim 6, wherein the clutched master pump assembly of the vehicle satisfies the relationship:
clutch operating lever ratio (S)2/S1)*(r1/r2)*(b1/b2)；
Wherein S is1Is the hydraulic area of the master pump, S2Is the hydraulic area of the cylinder, r1/r2Is the pedal lever ratio, b1/b2Is the lever ratio of the shifting fork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831679.9A CN113565894A (en) | 2021-07-22 | 2021-07-22 | Clutch master cylinder assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831679.9A CN113565894A (en) | 2021-07-22 | 2021-07-22 | Clutch master cylinder assembly and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113565894A true CN113565894A (en) | 2021-10-29 |
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ID=78166369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110831679.9A Pending CN113565894A (en) | 2021-07-22 | 2021-07-22 | Clutch master cylinder assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113565894A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201074576Y (en) * | 2007-04-10 | 2008-06-18 | 奇瑞汽车有限公司 | Hydraulic pump |
| KR20110023624A (en) * | 2009-08-31 | 2011-03-08 | 주식회사평화발레오 | Volume changing clutch master cylinder |
| CN202719045U (en) * | 2012-07-05 | 2013-02-06 | 上海汽车集团股份有限公司 | Cylinder-diameter-changing clutch main pump |
| CN202971667U (en) * | 2012-11-26 | 2013-06-05 | 安徽江淮汽车股份有限公司 | Clutch main cylinder |
| CN106870593A (en) * | 2017-04-13 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | The Clutch main cylinder of variable cross section product |
| CN206592452U (en) * | 2017-03-13 | 2017-10-27 | 安徽江淮汽车集团股份有限公司 | A kind of Clutch main cylinder |
| CN108006106A (en) * | 2017-12-04 | 2018-05-08 | 奇瑞汽车股份有限公司 | A kind of automatic clutch operating system and its change cylinder diameter clutch working cylinder |
-
2021
- 2021-07-22 CN CN202110831679.9A patent/CN113565894A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201074576Y (en) * | 2007-04-10 | 2008-06-18 | 奇瑞汽车有限公司 | Hydraulic pump |
| KR20110023624A (en) * | 2009-08-31 | 2011-03-08 | 주식회사평화발레오 | Volume changing clutch master cylinder |
| CN202719045U (en) * | 2012-07-05 | 2013-02-06 | 上海汽车集团股份有限公司 | Cylinder-diameter-changing clutch main pump |
| CN202971667U (en) * | 2012-11-26 | 2013-06-05 | 安徽江淮汽车股份有限公司 | Clutch main cylinder |
| CN206592452U (en) * | 2017-03-13 | 2017-10-27 | 安徽江淮汽车集团股份有限公司 | A kind of Clutch main cylinder |
| CN106870593A (en) * | 2017-04-13 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | The Clutch main cylinder of variable cross section product |
| CN108006106A (en) * | 2017-12-04 | 2018-05-08 | 奇瑞汽车股份有限公司 | A kind of automatic clutch operating system and its change cylinder diameter clutch working cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.669 Shixin Road, economic development zone, Feixi County, Hefei City, Anhui Province Applicant after: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211029 |