CN220706264U - Clutch piston structure - Google Patents
Clutch piston structure Download PDFInfo
- Publication number
- CN220706264U CN220706264U CN202322180927.5U CN202322180927U CN220706264U CN 220706264 U CN220706264 U CN 220706264U CN 202322180927 U CN202322180927 U CN 202322180927U CN 220706264 U CN220706264 U CN 220706264U
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- China
- Prior art keywords
- piston
- friction pair
- shell
- abutting part
- clutch
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model belongs to the technical field of clutches, and provides a clutch piston structure, which comprises a shell, wherein a piston, a friction pair, a pressing plate, a piston baffle plate and a plurality of springs are arranged in the shell, a pressure oil cavity is formed between the shell and the piston, the friction pair is arranged on one side of the piston, the pressing plate is arranged on one side of the friction pair far away from the piston, the piston baffle plate is connected with the shell, the springs are arranged between the piston and the piston baffle plate, the friction pair comprises a plurality of steel sheets and friction sheets which are arranged at intervals in sequence, an abutting part protruding towards the direction of the friction pair is arranged on the piston, and the abutting part is used for forming point contact or line contact with the steel sheets adjacent to the piston. Compared with the prior art, the utility model has the advantages that: the arc abutting part is arranged on the piston, so that point contact or line contact is formed between the arc abutting part of the piston and the steel sheet of the friction pair, more modes of forming the arc abutting part by the piston bulge are provided, no stronger requirement on flatness is provided, and the processing difficulty is reduced.
Description
Technical Field
The utility model belongs to the technical field of clutches, and particularly relates to a clutch piston structure.
Background
At present, in the existing clutch structure, an oil filling cavity is formed between a piston and the side wall of a shell, and under the action of oil pressure, the piston generates thrust to combine and separate a steel sheet and a friction sheet, so that the separation and combination functions of the clutch are realized.
In the existing clutch structure, the contact mode of the piston and the steel sheet in the friction pair is surface contact, for example, in the clutch piston structure with the patent publication number of CN210510020U, one surface is arranged on the piston after the oil filling cavity is filled with oil to push the steel sheet in the friction pair upwards, a surface pressing surface supporting mode is arranged between the piston and the steel sheet to enable the steel sheet to be combined with the friction sheet, but the surface pressing surface supporting mode has higher requirements on the planeness of the supporting surface of the piston, and if the dimensional and form and position tolerance deviation influences the part combination result, the possibility of uneven stress of the friction pair of the clutch exists, and the processing difficulty is high.
Disclosure of Invention
The utility model aims to provide a clutch piston structure, wherein an arc abutting part is arranged on a piston, so that point contact or line contact is formed between the arc abutting part of the piston and a steel sheet of a friction pair, more arc abutting parts are formed by a piston bulge, no stronger requirement is required on flatness, the processing difficulty is reduced, the processing cost is saved, the production procedure of an integral part is shortened, and the production efficiency is improved.
The technical scheme adopted for solving the technical problems is as follows: a clutch piston structure is proposed, comprising: the piston is connected with the shell, the piston is connected with the piston baffle, a plurality of springs are arranged between the piston baffle and the piston, the friction pair is arranged on one side of the piston, the piston is arranged on one side of the piston, which is far away from the piston, the friction pair comprises a plurality of steel sheets and friction sheets which are arranged at intervals in sequence, a convex abutting part towards the direction of the friction pair is arranged on the piston, and the abutting part is used for forming point contact or line contact with the steel sheets adjacent to the piston.
Compared with the prior art, the utility model has the advantages that: the arc abutting part is arranged on the piston, so that point contact or line contact is formed between the arc abutting part of the piston and the steel sheet of the friction pair, supporting points between the piston and the steel sheet are clear, the mode that the arc abutting part is formed by the piston bulge is more, no strong requirement is provided for flatness, processing difficulty is reduced, processing cost is saved, production procedures of integral parts are shortened, production efficiency is improved, supporting force between the piston and the steel sheet is concentrated, stress is more accurate in the combining process of the piston and the friction pair, combining speed of the friction sheet and the steel sheet is accelerated, and combining efficiency of a clutch is improved.
In the clutch piston structure, the abutting part and the piston are integrally formed by stamping, and other processing procedures are not newly added, so that the performance is improved, and the cost is not increased. The abutting position between the arc abutting part and the steel sheet can be adjusted according to the combination point of the sheet group, and the position of a specific pressure point is calculated according to the actual requirement CAE in the specific pressure area.
In the above-mentioned clutch piston structure, the abutting portion is disposed at an outer edge of the piston and is located at a position where the piston is in force-bearing abutment with the friction pair.
In the clutch piston structure, the abutting portion is of an annular structure, the cross section of the abutting portion is in a circular arc shape, and the central angle corresponding to the circular arc shape is theta, and theta is more than or equal to 90 degrees and less than or equal to 180 degrees. The piston bending area modes are more, the central angle corresponding to the arc abutting part is between 90 degrees and 180 degrees, no stronger requirement is required for the planeness, the processing is convenient, and the cost is low.
In the clutch piston structure, the piston is made of steel, and has good toughness and mechanical strength.
In the clutch piston structure, the pressing plate may be provided with the abutting portion protruding in the friction pair direction. When the piston is abutted with the steel sheet of the friction pair, the friction sheet of the friction pair is abutted with the pressing plate, and the same abutting part is arranged on the pressing plate, so that the supporting force between the pressing plate and the friction pair is concentrated and accurate, and the clutch efficiency of the clutch is further improved.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of one embodiment of the present utility model;
fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
In the figure, 1, a shell; 2. a piston; 3. a piston baffle; 4. a spring; 5. a pressure oil chamber; 6. a steel sheet; 7. a friction plate; 8. an arc abutting portion; 9. and (5) pressing plates.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 to 3, a clutch piston structure of the present utility model includes: the piston is characterized in that a piston 2, a friction pair, a pressing plate 9, a piston baffle 3 and a plurality of springs 4 are arranged in the shell 1, a pressure oil cavity 5 is formed between the shell 1 and the piston 2, one side of the piston 2 is provided with the friction pair, one side of the friction pair, far away from the piston 2, is provided with the pressing plate 9, the piston baffle 3 is connected with the shell 1, the piston 2 and the piston baffle 3 are provided with the plurality of springs 4, the friction pair comprises a plurality of steel sheets 6 and friction sheets 7 which are arranged at intervals in sequence, a butt part 8 protruding towards the direction of the friction pair is arranged on the piston 2, and the butt part 8 is used for forming point contact or line contact with the steel sheets 6 adjacent to the piston 2. The arc abutting part 8 is arranged on the piston 2, so that point contact or line contact is formed between the arc abutting part 8 of the piston 2 and the steel sheet 6 of the friction pair, a supporting point between the piston 2 and the steel sheet 6 is clear, the mode that the arc abutting part is formed by the protrusion of the piston 2 is more, no stronger requirement on flatness is achieved, the processing difficulty is reduced, the processing cost is saved, the production procedure of the whole part is shortened, the production efficiency is improved, the supporting force between the piston 2 and the steel sheet 6 is concentrated, the stress in the combining process of the piston 2 and the friction pair is more accurate, the combining speed of the friction sheet 7 and the steel sheet 6 is accelerated, and the combining efficiency of the clutch is improved.
Further, the abutment portion 8 and the piston 2 are integrally press-molded. The other processing procedures are not newly added, so that the performance is improved and the cost is not increased. The abutting position between the arc abutting part 8 and the steel sheet 6 can be adjusted according to the combination point of the sheet group, and specifically, the position of a specific pressure point is calculated according to the actual requirement CAE in the pressure area.
Further, the abutting portion 8 is provided at the outer edge of the piston 2, and is located where the piston 2 is in force-bearing abutment with the friction pair.
Further, the abutting part 8 is of an annular structure, the cross section of the abutting part 8 is in a circular arc shape, and the central angle corresponding to the circular arc shape is theta which is more than or equal to 90 degrees and less than or equal to 180 degrees. The piston 2 is more in bending area mode, the central angle corresponding to the arc abutting part 8 is between 90 degrees and 180 degrees, the flatness is not required, the processing is convenient, and the cost is low.
Furthermore, the piston 2 is made of steel, and has good toughness and mechanical strength.
Further, the pressing plate 9 is also provided with an abutment portion 8 protruding in the friction pair direction. When the piston 2 is abutted against the steel sheet 6 of the friction pair, the friction plate 7 of the friction pair is abutted against the pressing plate 9, and the same abutting part 8 is arranged on the pressing plate 9, so that the supporting force between the pressing plate 9 and the friction pair is concentrated and accurate, and the clutch efficiency of the clutch is further improved.
Working principle: when the oil pressure of the pressure oil cavity 5 between the shell 1 and the piston 2 is increased, the piston 2 is pushed to move to the friction pair side, the arc abutting part 8 on the piston 2 abuts against the steel sheet 6, when the arc abutting part 8 is tangential to the contact surface of the steel sheet 6, the piston 2 is in point contact with the steel sheet 6 through the arc abutting part 8, when the arc abutting part is not tangential, the piston 2 is in line contact with the steel sheet 6 through the arc abutting part 8, the contact position of the piston 2 and the steel sheet 6 is clear, at the moment, the piston 2 compresses the spring 4, the steel sheet 6 is in contact with the friction sheet 7, and the clutch is combined to transmit torque. When the combination is not needed, the oil pressure of the pressure oil cavity 5 is reduced, the spring 4 returns to the elastic force to push the piston 2 back to the original position, the steel sheet 6 of the friction pair is separated from the friction sheet 7, the clutch is separated, and no torque is transmitted. In the present utility model, the pressing plate 9 is connected to the housing 1, and the pressing plate 9 is connected to one side of the friction pair for limiting the axial distance of the friction pair.
The specific embodiments described herein are offered by way of example only. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined.
Claims (6)
1. A clutch piston structure comprising: the novel friction pair comprises a shell (1), wherein a piston (2), a friction pair, a pressing plate (9), a piston baffle (3) and a plurality of springs (4) are arranged in the shell (1), a pressure oil cavity (5) is formed between the shell (1) and the piston (2), one side of the piston (2) is provided with the friction pair, one side of the piston (2) is away from the friction pair, the pressing plate (9) is arranged on one side of the piston (2), the piston baffle (3) is connected with the shell (1), a plurality of springs (4) are arranged between the piston (2) and the piston baffle (3), the friction pair comprises a plurality of steel sheets (6) and friction sheets (7) which are arranged at intervals in sequence, and the novel friction pair is characterized in that a butt part (8) protruding towards the direction of the friction pair is arranged on the piston (2), and point contact or line contact is formed between the steel sheets (6) adjacent to the piston (2).
2. Clutch piston structure according to claim 1, characterized in that the abutment (8) and the piston (2) are integrally stamped.
3. A clutch piston structure according to claim 2, characterized in that the abutment (8) is provided at the outer edge of the piston (2).
4. A clutch piston structure according to claim 2, characterized in that the abutment portion (8) is of annular configuration, the cross section of the abutment portion (8) is of circular arc shape, the circular arc shape corresponds to a central angle θ which is 90 ° or more and θ or less than 180 °.
5. A clutch piston arrangement according to claim 2, characterised in that the piston (2) is a piston made of steel.
6. A clutch piston structure according to any one of claims 1-5, characterised in that the pressure plate (9) is provided with the abutment (8) protruding in the direction of the friction pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322180927.5U CN220706264U (en) | 2023-08-14 | 2023-08-14 | Clutch piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322180927.5U CN220706264U (en) | 2023-08-14 | 2023-08-14 | Clutch piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220706264U true CN220706264U (en) | 2024-04-02 |
Family
ID=90437275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322180927.5U Active CN220706264U (en) | 2023-08-14 | 2023-08-14 | Clutch piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220706264U (en) |
-
2023
- 2023-08-14 CN CN202322180927.5U patent/CN220706264U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |