CN110242679B - Transmission device for automatic transmission - Google Patents
Transmission device for automatic transmission Download PDFInfo
- Publication number
- CN110242679B CN110242679B CN201910474168.9A CN201910474168A CN110242679B CN 110242679 B CN110242679 B CN 110242679B CN 201910474168 A CN201910474168 A CN 201910474168A CN 110242679 B CN110242679 B CN 110242679B
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- CN
- China
- Prior art keywords
- piston
- guide
- transmission
- guide piston
- spring
- 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.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 76
- 239000002131 composite material Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Classifications
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
Abstract
The invention relates to a transmission device, in particular to a transmission device for an automatic transmission; the invention provides a transmission device for an automatic transmission, which solves the technical problems that springs in the transmission device for the automatic transmission are easy to be unstable, the axial displacement characteristic of a piston is influenced, a plurality of groups of friction pair piece combination devices are not combined and separated stably enough, and the precision and the transmission quality of the transmission device for the automatic transmission are influenced. The invention relates to a transmission device for an automatic transmission, which comprises a piston, a driving transmission device, a piston left side supporting device, a piston right side supporting device, a plurality of groups of friction pair plate combination devices, a driven transmission device and an elastic device, wherein the elastic device comprises a base, a spring and a plurality of guide pistons; the base is annular, and a plurality of guide piston sleeves are uniformly distributed along the circumferential direction of the base; the number of the guide pistons is smaller than or equal to that of the guide pistons; the guide piston is in sliding connection with the guide piston sleeve.
Description
Technical Field
The invention relates to a transmission device, in particular to a transmission device for an automatic transmission.
Background
As shown in fig. 1, the conventional transmission device for an automatic transmission includes a piston 01, an active transmission device 02, a left-side support device 03, a right-side support device 04, a plurality of sets of friction pair plate combination devices 05, a passive transmission device 06, and an elastic device 07.
The driving transmission device 02 is fixedly connected with the left supporting device 03 of the piston. The multiple groups of friction pair plate combining devices 05 comprise even plates and odd plates, the active transmission device 02 rotates to drive the even plates of the multiple groups of friction pair plate combining devices 05 to rotate, and the odd plates of the multiple groups of friction pair plate combining devices 05 rotate to drive the passive transmission device 06 to rotate.
The piston 01 and the left-hand piston support 03 form a medium working chamber 08, the piston 01 and the right-hand piston support 04 form a medium receiving chamber 09, and the spring means 07 are located between the piston 01 and the right-hand support 04. The piston 01 is axially movable between a left piston support 03 and a right piston support 04.
The existing resilient means 07 comprises a spring mounting base 071 and a plurality of springs 072. The spring mounting base 071 is annular, the end face of the spring mounting base 071 is uniformly provided with a plurality of spring limiting seats along the circumferential direction, the spring mounting base 071 is propped against the piston 01, and the spring 072 extends into the concave part of the right side supporting device 04 of the piston.
When the transmission device is needed to be combined, hydraulic medium flows into the medium working cavity 08, the hydraulic medium pushes the piston 01 to move rightwards against the elastic force of the elastic device, at the moment, the even plates and the odd plates of the friction pair plate combining device 05 are combined and rotate together, the rotary motion of the driving transmission device 02 is transmitted to the driven rotating device 06, and the transmission of torque and rotating speed is completed.
Because the piston 01 and the support device 04 on the right side of the piston have a rotating speed difference in the working process, the spring 072 axially compresses and simultaneously has radial bending; in addition, centrifugal force generated by the rotation motion of the spring 072 can also generate radial bending, the situation can lead to instability of the spring, influence the axial displacement characteristic of the piston, cause excessive vibration and noise in the combining and separating process of the transmission device, and further influence the control precision and transmission quality of the transmission device for the automatic transmission.
Disclosure of Invention
The invention provides a transmission device for an automatic transmission, which aims to solve the technical problems that springs in the existing transmission device for the automatic transmission are easy to be unstable, the axial displacement characteristic of a piston is influenced, a plurality of groups of friction pair piece combination devices are not stable enough to be combined and separated, and the accuracy and transmission quality of the transmission device for the automatic transmission are influenced.
The technical scheme of the invention is as follows:
the utility model provides a transmission for automatic transmission, includes piston, initiative transmission, piston left side strutting arrangement, piston right side strutting arrangement, multiunit friction pair piece composite set, passive transmission and resilient means, its special character lies in:
the elastic device comprises a base, a spring and a plurality of guide pistons;
the base is annular, and a plurality of guide piston sleeves are uniformly distributed along the circumferential direction of the end face of the base; the guide piston sleeve is matched with the inner hole of the spring, and the number of the guide pistons is smaller than or equal to that of the guide pistons;
the guide piston is a step shaft; the guide piston is in sliding connection with the guide piston sleeve.
Further, in order to reduce friction force between the guide piston and the guide piston sleeve, the cross section of the small end of the guide piston is an ellipse surrounded by two sections of circular arcs and two sections of straight lines, and the two sections of circular arcs are tangent to the inner hole of the guide piston sleeve.
Further, the length of the guide piston sleeve is greater than half the free height of the spring, and the sum of the length of the guide piston sleeve and the length of the small end of the guide piston is greater than the free height of the spring.
Further, in order to reduce the movement resistance of the piston, the number of the guide piston sleeves is 22, and the number of the guide pistons is 3.
Further, in order to reduce the weight, the pilot piston is provided with a weight reducing hole penetrating in the axial direction.
Further, the outer diameter of the large end of the guide piston is equal to the outer diameter of the spring.
Compared with the prior art, the invention has the beneficial effects that:
1. the elastic device comprises the base, the spring and the guide pistons, wherein the guide piston sleeve is arranged on the base and is in sliding connection with the guide pistons to form the guide assembly, so that bending deformation of the spring is limited, the spring can stably stretch along the axial direction of the guide assembly, vibration and noise in the combining and separating process of the transmission device are reduced, and the control precision and the transmission quality of the transmission device are improved.
2. According to the invention, the cross section of the small end of the guide piston is an ellipse surrounded by two sections of circular arcs and two sections of straight lines, and the two sections of circular arcs are tangent to the inner hole of the guide piston sleeve, so that the friction force between the guide piston and the guide piston sleeve is reduced.
3. The number of the guide pistons is smaller than that of the guide piston sleeves, so that the movement resistance of the pistons is reduced.
Drawings
FIG. 1 is a block diagram of a conventional automatic transmission;
FIG. 2 is a block diagram of one embodiment of the present invention;
FIG. 3 is an exploded view of this embodiment (with the active drive, multiple sets of friction pair plate combinations, and passive drive removed);
fig. 4 is a perspective view of the elastic means in this embodiment;
FIG. 5 is a partial view of the elastic means in this embodiment;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
the reference numerals are:
in fig. 1:
01-piston, 02-driving transmission device, 03-piston left side supporting device, 04-piston right side supporting device, 05-multi-group friction pair piece combination device, 06-driven transmission device, 07-elastic device, 071-spring mounting base, 072-spring, 08-medium working cavity and 09-medium accommodating cavity.
In fig. 2 to 6:
1-piston, 2-driving transmission device, 3-piston left side supporting device, 4-piston right side supporting device, 5-multiunit friction pair piece composite set, 6-driven transmission device, 7-elastic device, 701-base, 702-spring, 703-guiding piston, 704-guiding piston sleeve, 705-circular arc, 706-straight line, 8-medium working cavity and 9-medium accommodating cavity.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific examples.
Referring to fig. 2 and 3, the transmission for an automatic transmission includes a piston 1, an active transmission 2, a left-side piston support 3, a right-side piston support 4, a plurality of sets of friction pair combination devices 5, a passive transmission 6, and an elastic device 7.
Referring to fig. 4 to 6, the elastic means 7 includes a base 701, a spring 702, and 4 guide pistons 703. The base 701 is annular, and the end face of the base 701 is provided with 22 guide piston sleeves 704 uniformly distributed along the circumferential direction of the base 701. The guide piston sleeve 704 fits into the inner bore of the spring 702. The compression stroke of the spring 702 is greater than the axial displacement distance of the piston 1.
The guide piston 703 is slidably connected to the guide piston sleeve 704, the length of the guide piston sleeve 704 is greater than half the free height of the spring 702, and the sum of the length of the guide piston sleeve 704 and the length of the small end of the guide piston 703 is greater than the free height of the spring 702. The guide piston 703 is a stepped shaft, the cross section of the small end of the guide piston 703 is an ellipse surrounded by two sections of circular arcs 705 and two sections of straight lines 706, the two sections of circular arcs 705 are tangential to the inner hole of the guide piston sleeve 704, the outer diameter of the large end of the guide piston is equal to the outer diameter of the spring 702, and a rectangular hole penetrating through the axial direction is arranged in the guide piston.
Referring to fig. 2, the operating principle of the transmission for an automatic transmission is as follows:
when the transmission device is needed to be combined, the hydraulic medium flows into the medium working cavity 8, the hydraulic medium pushes the piston 1 to overcome the elasticity of the elastic device 7 to move to the right, at the moment, the even plates and the odd plates of the friction pair plate combining device 5 are combined and rotate together, the rotary motion of the driving transmission device 2 is transmitted to the driven rotating device 6, and the transmission of torque and rotating speed is completed.
The spring 702 of the transmission device for the automatic transmission is arranged between the guide piston 703 and the guide piston sleeve 704, when the spring stretches, the guide piston 703 can slide in the guide piston sleeve 704, so that the base 701 is limited to be offset relative to the right side supporting device 4 of the piston, further, bending deformation of the spring 702 is limited, the phenomenon that the spring 702 is unstable due to the rotation speed difference of the piston 1 and the right side supporting device 4 of the piston in the working process and the centrifugal force of the spring 702 is avoided, the spring 702 can stretch and retract stably along the axial direction of the guide assembly, the axial displacement characteristic of the piston 1 is not influenced, vibration and noise in the combining and separating process of the transmission device are reduced, and the control precision and the transmission quality of the transmission device are improved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (3)
1. The utility model provides a transmission for automatic transmission, includes piston (1), initiative transmission (2), piston left side strutting arrangement (3), piston right side strutting arrangement (4), multiunit friction pair piece composite set (5), passive transmission (6) and resilient means (7), its characterized in that:
the elastic device (7) comprises a base (701), a spring (702) and a plurality of guide pistons (703);
the base (701) is annular, and a plurality of guide piston sleeves (704) which are uniformly distributed along the circumferential direction of the base (701) are arranged on the end face of the base; the guide piston sleeves (704) are matched with the inner holes of the springs (702), and the number of the guide pistons (703) is smaller than or equal to the number of the guide piston sleeves (704);
the guide piston (703) is a stepped shaft; the guide piston (703) is in sliding connection with the guide piston sleeve (704);
the cross section of the small end of the guide piston (703) is an ellipse surrounded by two sections of circular arcs (705) and two sections of straight lines (706), and the two sections of circular arcs (705) are tangential to the inner hole of the guide piston sleeve (704);
the length of the guide piston sleeve (704) is greater than half the free height of the spring (702), and the sum of the length of the guide piston sleeve (704) and the length of the small end of the guide piston (703) is greater than the free height of the spring (702);
the guide piston (703) is provided with a weight reducing hole which penetrates through the axial direction, and the weight reducing hole is a rectangular hole.
2. The transmission for an automatic transmission according to claim 1, characterized in that: the number of the guide piston sleeves (704) is 22; the number of the guide pistons (703) is 3.
3. A transmission for an automatic transmission according to claim 1 or 2, characterized in that: the outer diameter of the large end of the guide piston (703) is equal to or larger than the outer diameter of the spring (702).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474168.9A CN110242679B (en) | 2019-05-31 | 2019-05-31 | Transmission device for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474168.9A CN110242679B (en) | 2019-05-31 | 2019-05-31 | Transmission device for automatic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242679A CN110242679A (en) | 2019-09-17 |
| CN110242679B true CN110242679B (en) | 2024-01-02 |
Family
ID=67885839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910474168.9A Active CN110242679B (en) | 2019-05-31 | 2019-05-31 | Transmission device for automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110242679B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017156A (en) * | 2001-08-24 | 2003-03-03 | 현대자동차주식회사 | Multi-plate clutch for automatic transmission |
| DE10253020A1 (en) * | 2002-11-14 | 2004-05-27 | Zf Sachs Ag | Pneumatic operating device for friction clutch has pressurized surfaces of piston and cylinder with axial recess toward opposite pressurized surface |
| DE102007027118A1 (en) * | 2007-06-13 | 2009-01-29 | Volkswagen Ag | Feather/spring device for use in motor vehicle, has disk springs guided in disk spring packet through guiding arrangement, where arrangement comprises guiding elements that are adjustable with respect to one another in axial direction |
| CN101479495A (en) * | 2006-06-20 | 2009-07-08 | 卢克摩擦片和离合器两合公司 | Hydraulically actuatable disengaging gear |
| CN101523072A (en) * | 2006-10-27 | 2009-09-02 | Nok株式会社 | Piston with built-in seal |
| DE102008048801B3 (en) * | 2008-09-24 | 2010-06-17 | Getrag Ford Transmissions Gmbh | Support element i.e. disk-like support plate, for clutch device arranged between engine and transmission of motor vehicle, has segments arranged at periphery of plate, separated by radial gaps and associated to respective support units |
| CN106641027A (en) * | 2016-12-01 | 2017-05-10 | 陕西法士特齿轮有限责任公司 | Brake |
| CN106763343A (en) * | 2017-02-17 | 2017-05-31 | 西安航空制动科技有限公司 | A kind of aviation spring shell type automatic gap adjusting piston component |
| CN208203843U (en) * | 2018-05-21 | 2018-12-07 | 柳工柳州传动件有限公司 | The clutch of clutch gap adjust automatically |
| CN210265583U (en) * | 2019-05-31 | 2020-04-07 | 陕西法士特齿轮有限责任公司 | Transmission device for automatic transmission |
-
2019
- 2019-05-31 CN CN201910474168.9A patent/CN110242679B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017156A (en) * | 2001-08-24 | 2003-03-03 | 현대자동차주식회사 | Multi-plate clutch for automatic transmission |
| DE10253020A1 (en) * | 2002-11-14 | 2004-05-27 | Zf Sachs Ag | Pneumatic operating device for friction clutch has pressurized surfaces of piston and cylinder with axial recess toward opposite pressurized surface |
| CN101479495A (en) * | 2006-06-20 | 2009-07-08 | 卢克摩擦片和离合器两合公司 | Hydraulically actuatable disengaging gear |
| CN101523072A (en) * | 2006-10-27 | 2009-09-02 | Nok株式会社 | Piston with built-in seal |
| DE102007027118A1 (en) * | 2007-06-13 | 2009-01-29 | Volkswagen Ag | Feather/spring device for use in motor vehicle, has disk springs guided in disk spring packet through guiding arrangement, where arrangement comprises guiding elements that are adjustable with respect to one another in axial direction |
| DE102008048801B3 (en) * | 2008-09-24 | 2010-06-17 | Getrag Ford Transmissions Gmbh | Support element i.e. disk-like support plate, for clutch device arranged between engine and transmission of motor vehicle, has segments arranged at periphery of plate, separated by radial gaps and associated to respective support units |
| CN106641027A (en) * | 2016-12-01 | 2017-05-10 | 陕西法士特齿轮有限责任公司 | Brake |
| CN106763343A (en) * | 2017-02-17 | 2017-05-31 | 西安航空制动科技有限公司 | A kind of aviation spring shell type automatic gap adjusting piston component |
| CN208203843U (en) * | 2018-05-21 | 2018-12-07 | 柳工柳州传动件有限公司 | The clutch of clutch gap adjust automatically |
| CN210265583U (en) * | 2019-05-31 | 2020-04-07 | 陕西法士特齿轮有限责任公司 | Transmission device for automatic transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110242679A (en) | 2019-09-17 |
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