CN211059247U - Clutch retainer for automatic transmission - Google Patents
Clutch retainer for automatic transmission Download PDFInfo
- Publication number
- CN211059247U CN211059247U CN201922197547.6U CN201922197547U CN211059247U CN 211059247 U CN211059247 U CN 211059247U CN 201922197547 U CN201922197547 U CN 201922197547U CN 211059247 U CN211059247 U CN 211059247U
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- CN
- China
- Prior art keywords
- clutch
- piston
- return spring
- ring
- clutch inner
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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.)
- Expired - Fee Related
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model provides a clutch holder for automatic gearbox, belong to automotive transmission technical field, the utility model discloses a clutch outer hub and clutch inner circle outside welded connection, the inboard and clutch input shaft welded connection of clutch inner circle, be provided with the ring baffle on the inboard outer wall of clutch, circle in the clutch and still processed thin oilhole and thick oilhole, the internally mounted of clutch outer hub and clutch inner circle has the piston, form the piston chamber between piston and the clutch inner circle, the top of piston is provided with the return spring holder, be provided with return spring between return spring holder and the piston, form balanced chamber between return spring holder and the piston, thin oilhole and balanced chamber intercommunication, thick oilhole and piston chamber intercommunication. The utility model has the advantages of simple structure and reasonable design and reliable and stable, the utility model discloses an increase ring baffle's structure, consequently enlarged the effective range in balanced chamber, made the balance of piston control more easily, and need not strengthen return spring's load.
Description
Technical Field
The utility model relates to a clutch holder for automatic gearbox belongs to automotive transmission technical field.
Background
An automatic transmission is a device that switches a shift range to an appropriate shift range according to a running state of a vehicle. A typical automatic transmission includes at least one planetary gear set having a sun gear, a ring gear, and a carrier as operating members, and a friction plate assembly such as a clutch and a brake for controlling the operation of the operating members. In addition, the automatic transmission further includes a hydraulic control system for hydraulically controlling the friction plate assembly. According to each shift range, the clutch and the brake are controlled to be engaged or disengaged by operation of the hydraulic control system, thereby achieving each shift range. The clutch of the friction member transmits power of the engine to the operating members of the planetary gear set or transmits power between the operating members. Clutches may be used to transmit power in a variety of machines as well as automatic transmissions. The clutch includes a piston, a plurality of steel plates, and a plurality of friction plates alternately arranged with the plurality of steel plates. When hydraulic pressure is supplied to the piston, the steel plate moves to contact the friction plate, and finally, the shift range is shifted to the target shift range. When the hydraulic pressure is released from the piston, the piston returns to the initial position by a return spring or the like, the steel plate moves to be separated from the friction plate by a reaction plate or the like, and finally the operating member is released.
Current designs all require a balance chamber for the clutch, opposite the piston chamber, on the other side of the piston. When the clutch rotates, oil in the piston cavity and the balance cavity can generate thrust on the piston due to rotation, the two forces should be equal or close to each other, and otherwise the piston is difficult to control accurately. Sometimes, due to the structure, the centrifugal thrust of the balance cavity is smaller than that of the piston cavity, and then the load of the return spring needs to be increased in order to ensure that the piston can be kept still or return, but the problem is that the spring load is increased, the pressing force of the piston is reduced, and the torque capacity of the clutch is reduced, so that the balance between the piston cavity and the balance cavity can be realized without changing the load of the return spring.
SUMMERY OF THE UTILITY MODEL
The object of the utility model is to solve above-mentioned technical problem, and then provide a clutch holder for automatic gearbox.
The technical scheme of the utility model:
A clutch retainer for an automatic transmission comprises a clutch outer hub, a piston, a return spring, a clutch inner ring, a return spring retainer, an annular baffle and a clutch input shaft, wherein the clutch outer hub is welded with the outer side of the clutch inner ring, the inner side of the clutch inner ring is welded with the clutch input shaft, a first annular groove and a second annular groove are processed on the inner side wall of the clutch inner ring, the annular baffle is arranged on the outer wall of the inner side of the clutch inner ring, a fine oil hole and a coarse oil hole are processed on the clutch inner ring, the piston is installed inside the clutch outer hub and the clutch inner ring, one side of the piston is connected with the clutch outer hub, the other side of the piston is installed with the clutch inner ring in a matching way through the first annular groove, a piston cavity is formed between the piston and the clutch inner ring, the return spring retainer is arranged above the piston, and one side of the return spring retainer is fixedly connected with the, the other side of the return spring retainer is matched and mounted with the clutch inner ring through a second ring groove, a return spring is arranged between the return spring retainer and the piston, a balance cavity is formed between the return spring retainer and the piston, the fine oil hole is communicated with the balance cavity, and the coarse oil hole is communicated with the piston cavity.
Further, the clutch inner ring and the annular baffle are integrally forged and formed.
Further, a rubber D-shaped ring is arranged in the first ring groove.
Further, a rubber O-shaped ring is arranged in the second annular groove.
Furthermore, the outer hub of the clutch and the outer side wall of the inner ring of the clutch are welded to form a first welding seam, and the inner side wall of the inner ring of the clutch and the input shaft of the clutch are welded to form a second welding seam.
The utility model discloses following beneficial effect has: the utility model has the advantages of simple structure and reasonable design and reliable and stable, the utility model discloses an increase ring baffle's structure, consequently enlarged the effective range in balanced chamber, made the balance of piston control more easily, and need not strengthen return spring's load.
Drawings
FIG. 1 is a schematic structural view of the present invention;
In the figure, 1-clutch outer hub, 2-piston, 3-first welding seam, 4-return spring, 5-clutch inner ring, 6-return spring retainer, 7-annular baffle, 8-clutch input shaft, 9-second welding seam, 10-fine oil hole, 11-coarse oil hole, 12-rubber D-shaped ring, 13-rubber O-shaped ring, 14-balance cavity, 15-piston cavity, 16-first ring groove and 17-second ring groove.
Detailed Description
The first embodiment is as follows: a clutch retainer for an automatic transmission comprises a clutch outer hub 1, a piston 2, a return spring 4, a clutch inner ring 5, a return spring retainer 6, an annular baffle 7 and a clutch input shaft 8, and is characterized in that the clutch outer hub 1 is welded with the outer side of the clutch inner ring 5, the inner side of the clutch inner ring 5 is welded with the clutch input shaft 8, a first annular groove 16 and a second annular groove 17 are processed on the inner side wall of the clutch inner ring 5, the annular baffle 7 is arranged on the outer wall of the inner side of the clutch inner ring 5, a fine oil hole 10 and a coarse oil hole 11 are further processed on the clutch inner ring 5, the piston 2 is installed inside the clutch outer hub 1 and the clutch inner ring 5, one side of the piston 2 is connected with the clutch outer hub 1, the other side of the piston 2 is installed with the clutch inner ring 5 in a matching way through the first annular groove 16, a piston cavity 15 is formed between the piston 2 and the clutch inner ring 5, a return spring retainer 6 is arranged above the piston 2, one side of the return spring retainer 6 is fixedly connected with the piston 2, the other side of the return spring retainer 6 is installed with a clutch inner ring 5 in a matched mode through a second ring groove 17, a return spring 4 is arranged between the return spring retainer 6 and the piston 2, a balance cavity 14 is formed between the return spring retainer 6 and the piston 2, a fine oil hole 10 is communicated with the balance cavity, a coarse oil hole 11 is communicated with a piston cavity 15, a clutch outer hub 1 and the outer side wall of the clutch inner ring 5 are welded to form a first welding seam 3, and the inner side wall of the clutch inner ring 5 and a clutch input shaft 8 are welded to form a second welding seam 9; the arrangement is that the clutch input shaft is welded with the clutch inner ring, the clutch outer ring is welded with the clutch outer hub, the whole structure plays the roles of transmitting torque and supporting other parts, when in work, power is transmitted to the clutch inner ring from the clutch input shaft and then transmitted to the clutch outer hub, the annular baffle arranged on the inner ring of the clutch and the input shaft of the clutch form a cavity which is connected with the balance cavity of the clutch, so that the balance cavity of the inner ring of the clutch is enlarged, thereby improving the thrust of the balance cavity to the piston, the piston is arranged in the clutch outer hub and the clutch inner ring, the piston can move axially under the action of oil pressure, when oil is supplied to a coarse oil hole, the oil pressure pushes the piston to move rightwards, the return spring is directly propped against the plane of the piston under the pressure, and when the piston is not filled with oil, the piston is returned under the action force of the return spring.
Further optimizing, the clutch inner ring 5 and the annular baffle 7 are integrally forged and formed; so set up, increase the effective scope that the annular baffle has enlarged the balanced chamber equivalently, increased the life of piston, such structure is more economic moreover.
Still further, a rubber D-shaped ring 12 is arranged in the first annular groove 16, and a rubber O-shaped ring 13 is arranged in the second annular groove 17; so set up, rubber D type ring and rubber O type ring all play sealed effect, can not flow when oil fills into the piston chamber, when giving the oil feed of tiny oil hole, balanced chamber can be built up to oil, fluid can not flow when the clutch is rotatory, and the rubber ring is installed in the annular in addition, and it is convenient to dismantle.
ATF oil in the gearbox enters a piston cavity 15 through a thick oil hole 11, the ATF oil in the piston cavity 15 generates thrust on a piston 2 under the action of centrifugal force, the ATF oil enters a balance cavity 14 through a thin oil hole 10, the ATF oil in the balance cavity 14 also generates thrust on the piston 2 under the action of the centrifugal force, and theoretically, the two thrusts are equal, so that the piston 2 can be better controlled, and because the maximum outer diameter of the balance cavity 14 is smaller than that of the piston cavity 15, the thrust generated by the oil in the balance cavity 14 is smaller than that generated by the oil in the piston cavity 15, and the piston 2 cannot be balanced;
In order to solve the problems, the balance of the piston 2 is ensured, the annular baffle 7 structure is added on the clutch inner ring 5, the annular baffle 7 and the clutch input shaft 8 form a cavity, the cavity can be connected with the balance cavity 14 through the thin oil hole 10, when the clutch rotates at a high speed, oil in the cavity formed by the annular baffle 7 can generate certain centrifugal pressure under the action of centrifugal force, the centrifugal pressure is superposed into ATF oil in the balance cavity 14 through the thin oil hole 10, the thrust of the ATF oil in the balance cavity 14 to the piston 2 is enhanced, the effective range of the balance cavity 14 is equivalently expanded, the balance between the thrust generated by the ATF oil in the piston cavity 15 can be realized, the piston 2 is almost zero under the influence of the centrifugal force, and the hydraulic control is easier.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (5)
1. The utility model provides a clutch holder for automatic gearbox, includes outer hub (1) of clutch, piston (2), return spring (4), clutch inner circle (5), return spring holder (6), ring baffle (7) and clutch input shaft (8), its characterized in that, outer hub (1) of clutch and clutch inner circle (5) outside welded connection, the inboard and clutch input shaft (8) welded connection of clutch inner circle (5), it has first annular (16) and second annular (17) to process on the inside wall of clutch inner circle (5), be provided with ring baffle (7) on the inboard outer wall of clutch inner circle (5), still process on clutch inner circle (5) have thin oil pocket (10) and coarse oil pocket (11), the inner mounting of outer hub (1) of clutch and clutch inner circle (5) has piston (2), one side of the piston (2) is connected with the clutch outer hub (1), the other side of the piston (2) is installed with the clutch inner ring (5) in a matching way through a first ring groove (16), a piston cavity (15) is formed between the piston (2) and the clutch inner ring (5), a return spring retainer (6) is arranged above the piston (2), one side of the return spring retainer (6) is fixedly connected with the piston (2), the other side of the return spring retainer (6) is matched and installed with the clutch inner ring (5) through a second ring groove (17), a return spring (4) is arranged between the return spring retainer (6) and the piston (2), a balance cavity (14) is formed between the return spring retainer (6) and the piston (2), the fine oil hole (10) is communicated with the balance cavity, and the coarse oil hole (11) is communicated with the piston cavity (15).
2. The clutch cage for an automatic transmission according to claim 1, characterized in that the clutch inner (5) is integrally forged with the ring baffle (7).
3. The clutch holder for an automatic transmission according to claim 1, characterized in that a rubber D-ring (12) is provided in the first ring groove (16).
4. The clutch holder for an automatic transmission according to claim 1, characterized in that a rubber O-ring (13) is provided in the second ring groove (17).
5. A clutch cage for an automatic transmission according to claim 1, characterized in that the clutch outer hub (1) is welded to the outer side wall of the clutch inner (5) to form a first weld (3) and the inner side wall of the clutch inner (5) is welded to the clutch input shaft (8) to form a second weld (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922197547.6U CN211059247U (en) | 2019-12-10 | 2019-12-10 | Clutch retainer for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922197547.6U CN211059247U (en) | 2019-12-10 | 2019-12-10 | Clutch retainer for automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211059247U true CN211059247U (en) | 2020-07-21 |
Family
ID=71584074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922197547.6U Expired - Fee Related CN211059247U (en) | 2019-12-10 | 2019-12-10 | Clutch retainer for automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211059247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145574A (en) * | 2020-09-18 | 2020-12-29 | 西安法士特汽车传动有限公司 | Auxiliary mounting bracket for central clutch actuating mechanism and using method thereof |
-
2019
- 2019-12-10 CN CN201922197547.6U patent/CN211059247U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145574A (en) * | 2020-09-18 | 2020-12-29 | 西安法士特汽车传动有限公司 | Auxiliary mounting bracket for central clutch actuating mechanism and using method thereof |
| CN112145574B (en) * | 2020-09-18 | 2022-03-29 | 西安法士特汽车传动有限公司 | Auxiliary mounting bracket for central clutch actuating mechanism and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 Termination date: 20201210 |