KR101195941B1 - Torque convertor having torsional twin damper - Google Patents

Torque convertor having torsional twin damper Download PDF

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Publication number
KR101195941B1
KR101195941B1 KR20100099512A KR20100099512A KR101195941B1 KR 101195941 B1 KR101195941 B1 KR 101195941B1 KR 20100099512 A KR20100099512 A KR 20100099512A KR 20100099512 A KR20100099512 A KR 20100099512A KR 101195941 B1 KR101195941 B1 KR 101195941B1
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South Korea
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plate
disposed
turbine
springs
lockup clutch
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KR20100099512A
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Korean (ko)
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KR20120037823A (en
Inventor
이동현
장재덕
주인식
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한국파워트레인 주식회사
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Priority to KR20100099512A priority Critical patent/KR101195941B1/en
Publication of KR20120037823A publication Critical patent/KR20120037823A/en
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Publication of KR101195941B1 publication Critical patent/KR101195941B1/en

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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
    • F16H—GEARING
    • F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The present invention discloses a torque converter having a torsional twin damper having a simple structure.
In the torque converter having a torsional twin damper of the present invention, in a torque converter including a torsional damper, the torsional damper is connected to the lockup clutch and is rotated on a first plate and a second plate disposed on one side of the first plate. Plates, a plurality of primary springs disposed in the rotational direction on the first plate to elastically support the first plate and the second plate, a third plate integrally coupled with the second plate, the second plate and the third plate A fourth plate disposed between and connected to the spline hub that transmits driving force to the transmission side, and a plurality of secondary springs disposed on the fourth plate and elastically supporting the fourth plate and the second plate,
The first plate includes first extensions extending in an axial direction and connected to the lockup clutch, and second extensions extending in a further portion on the opposite side to the opposite side from which the second extensions extend. The second plate is provided with third extensions extending in the radial direction on the outer circumferential side to limit the rotational movement of the second extensions.

Figure R1020100099512

Description

Torque converter with torsional twin damper

The present invention relates to a torque converter having a torsional twin damper having a simple structure.

A conventional torque converter with a general damper system has one damping element when the lockup clutch is directly connected, and has only a damping element by fluid when the lockup clutch is released. As the lock-up clutch is directly connected to a low rpm, vibrations from the engine are greatly generated, and thus the role of the damping element has emerged as a very important problem.

The operation mechanism of the conventional twin damper has a considerable vibration damping effect by transmitting power to the turbine damper through the added damping element when directly connected to the lock-up clutch, but due to the increase of the spring driving element and the driven element and the addition of the fixing device There is a problem in that the increase in the number of parts and space constraints act as a disadvantage.

Therefore, the present invention has been proposed to solve the above problems, the object of the present invention can function as a torsional twin damper while not requiring a separate fixing device for the torsional twin damper. The present invention provides a torque converter with a tonic twin damper which can reduce manufacturing cost and increase design freedom by reducing the cost and space constraints.

In order to achieve the object of the present invention as described above, the front cover, the impeller coupled to the front cover to rotate together, the turbine disposed facing the impeller; A reactor disposed between the impeller and the turbine to change the flow of oil from the turbine to the impeller, a lockup clutch directly connecting the front cover and the turbine, and an impact coupled to the lockup clutch in a rotational direction; Includes a damper that absorbs vibration,

The torsional damper is connected to the lockup clutch, and includes a first plate that rotates, a second plate that is disposed on one side of the first plate, and a first plate and the second plate that are disposed in a rotational direction on the first plate. A plurality of primary springs that elastically support the third spring, a third plate integrally coupled to the second plate, and a third plate connected between the second plate and the third plate and connected to a spline hub that transmits a driving force to the transmission side. 4 plates, a plurality of secondary springs disposed on the fourth plate and elastically supporting the fourth plate and the second plate,

The first plate may include first extension parts extending in an axial direction and connected to the lock-up clutch, and second extension parts extending from a portion of the outer side to an opposite side from which the second extension parts extend. And the second plate provides a torque converter with a torsional twin damper provided with third extensions extending in a radial direction on an outer circumferential side to limit rotational movement of the second extensions.

Preferably, the second plate is provided with a space between the third extensions to provide a primary spring moving section for limiting movement of the first plate after the plurality of primary springs are compressed to a predetermined section.

Preferably, the third plate is provided with stoppers at regular intervals in the axial direction, and the fourth plate is provided with fourth extensions extending outwardly to limit rotational movement by the stopper.

Preferably, the fourth plate is provided with a space between the fourth extension parts to provide a secondary spring moving section for limiting the movement of the fourth plate after the plurality of secondary springs are compressed to a predetermined section.

When the lockup clutch is directly connected, the plurality of primary springs and the plurality of secondary springs are disposed at different radii to operate in series to absorb shock and vibration in a rotational direction, and the front when the lockup clutch is not operated. The driving force transmitted through the impeller connected to the cover is transmitted to the plurality of secondary springs through the turbine, the first plate, and the second plate to absorb shocks and vibrations in the rotational direction in the plurality of secondary springs. It is preferable.

The second plate may be integrally coupled with the turbine.

Preferably, the first extension portion of the first plate is formed by bending the tip portion of the first plate in the axial direction, and the second extension portion of the first plate is formed by cutting a portion of the first plate and bending it in the axial direction. .

In the present invention, a plurality of primary springs and a plurality of secondary springs are disposed at different radii to act in series to absorb shocks and vibrations in the rotational direction, and at the same time the first plate is moved by the movement distance of the plurality of primary springs. After rotation, the plurality of second extensions of the first plate are restricted by movement by the plurality of third extensions provided on the second plate, thereby eliminating the fixing device constituting the tonic twin damper, thereby reducing the number of parts. Eliminating space constraints reduces manufacturing costs and increases design freedom.

1 is a half sectional view of a torque converter for explaining an embodiment of the present invention.
2 is a perspective view showing main parts of a torque converter for explaining an embodiment of the present invention.
3 is an exploded perspective view illustrating an exploded view of FIG. 2 to explain an embodiment of the present invention.
4 is a view for explaining the operation of the embodiment of the present invention.
FIG. 5 is a diagram illustrating a power transmission sequence when the lockup clutch is directly connected (operated) to explain an embodiment of the present invention.
FIG. 6 is a diagram illustrating a power transmission sequence when the lockup clutch is released (disactivated) to explain an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a cross-sectional view cut in the axial direction to explain an embodiment of the present invention, Figure 2 is a view showing the main part of Figure 1, Figure 3 is an exploded perspective view of Figure 1, having a series connection damper A torque converter (hereinafter referred to as a torque converter) is shown.

The torque converter according to the embodiment of the present invention has a front cover 4 that is connected to the crankshaft on the engine side to rotate, an impeller 6 that is connected to the front cover 4 to rotate together, and a position facing the impeller 6. Disposed turbine 8 and reactor 10, also referred to as stator, which is located between impeller 6 and turbine 8 to divert the flow of oil from turbine 8 to the impeller 6 side. It includes. The reactor 10 delivering oil to the impeller 6 side has the same center of rotation as the front cover 4. And the lockup clutch 14 used as a means for directly connecting the engine and the transmission is disposed between the front cover 4 and the turbine (8).

The lockup clutch 14 is formed in a substantially disk shape and has a piston 16 that can move in the axial direction.

And the piston 16 is coupled to the friction material 18 in frictional contact with the front cover (4).

In addition, the lockup clutch 14 includes a torsional damper 20 that absorbs the torsional force acting in the rotational direction of the shaft and attenuates vibration when the friction material 18 is in close contact with the front cover 4. do.

The torsional damper 20 of the embodiment of the present invention includes a first plate 31, a second plate 33, a plurality of primary springs 35, a third plate 37, a fourth plate 39, And a plurality of secondary springs 41.

The first plate 31 may be connected to the lockup clutch 14 to rotate. A plurality of primary springs 35 may be disposed on the first plate 31 at regular intervals along the rotation direction.

The first plate 31 has first extensions 31a having the outer circumferential portion bent in the axial direction, and second extensions 31b having another portion of the outer side extending in the opposite direction to the first extensions 31a. ) A groove 31c is provided between the first extension portions 31a to which the outer circumferential side of the lockup clutch 14 can be fitted at regular intervals. The second extension portions 31b are arranged at regular intervals and may be manufactured by cutting a portion of the first plate 31 and bending it in the axial direction.

As such, the second extension portions 31b of the first plate 31 may be easily manufactured by processing such as punching with one plate without adding a separate component.

The second plate 33 is disposed on one side of the first plate 31, and may rotate by receiving elastic forces of the plurality of primary springs 35. Some of the plurality of primary springs 35 are accommodated in the second plate 33, and are illustrated in the plurality of spring insertion grooves 33a (FIG. 3) capable of elastically supporting the plurality of primary springs 35. ) Is provided. The plurality of spring insertion grooves 33a provided in the second plate 33 are disposed at regular intervals along the rotational direction. The second plate 33 may rotate a predetermined section by the reaction force of the plurality of primary springs 35 provided on the first plate 31.

That is, when the lock-up clutch 14 operates, the second plate 33 may rotate a predetermined section by the reaction force of the plurality of primary springs 35.

 The second plate 33 is provided with a plurality of spring insertion grooves 33b capable of elastically supporting the plurality of secondary springs 41.

The second plate 33 is provided on the outer circumferential side with third extensions 33c extending in the radial direction about the axis. The third extensions 33c of these second plates 33 are provided with a space 33d therebetween to provide primary spring movement sections a (shown in FIG. 4). After the plurality of primary springs 35 are compressed to a predetermined section through the primary spring moving sections a of the second plate 33, the rotational movement of the first plate 31 may be limited.

That is, the second plate 33 is connected to the first plate 35 by fitting in the outer part, and the first plate 33 compresses the plurality of primary springs 35 when the lockup clutch 14 operates. The stopper function to limit the movement of the first plate 31 after.

In the embodiment of the present invention, the first plate 31 and the second plate 33 are combined at the outer circumferential side of each other without having to install a separate stopper device so that the first plate 31 stops after moving a certain section. Has a stopper function that can be

On the other hand, the second plate 33 is integrally coupled by the coupling means such as the turbine 8 and rivets.

The plurality of primary springs 35 are disposed in the rotational direction on the first plate 31 described above. The plurality of primary springs 35 serve to support the elastic force in the direction of rotation between the first plate 31 and the second plate 33. That is, the plurality of primary springs 35 serve to absorb vibrations and shocks in the rotational direction between the first plate 31 and the second plate 33 when the lockup clutch 14 is operated.

The third plate 37 is integrally disposed to face the second plate 33 with the first plate 31 therebetween. The third plate 37 is provided with the same grooves as the second plate 33 to accommodate the plurality of primary springs 35 and the plurality of secondary springs 41. Since the detailed description is made of the same structure as the second plate 33, the detailed description will be replaced with the description of the second plate 33. That is, the third plate 37 is integrally disposed to face the second plate 33, so that the third plate 37 is disposed in the plurality of primary springs 35 and the fourth plate 39 disposed on the first plate 31. It can serve to maintain the position of the secondary spring 41 of.

A plurality of stoppers 43 (shown in FIGS. 3 and 4) provided at regular intervals in the axial direction are coupled to the third plate 37. The stopper 43 may use a coupling means such as a rivet for coupling the second plate 33 and the third plate 37.

The fourth plate 39 is disposed on the inner circumferential side of the first plate 31 and is disposed between the second plate 33 and the third plate 37. A plurality of secondary springs 41 are disposed in the fourth plate 39 in the circumferential direction. And the fourth plate 39 is provided with fourth extensions 39a extending in the radial direction with respect to the axis.

The fourth extensions 39a provided on the fourth plate 39 are provided with further spaces 39b therebetween to provide the secondary spring moving section b (shown in FIG. 4).

The fourth extensions 39a of the fourth plate 39 move the section where the plurality of secondary springs 41 are compressed when the second plate 33 and the third plate 37 rotate, and then stopper ( 43) movement may be restricted.

The fourth plate 39 may be integrally coupled with the spline hub 45 that transmits the driving force to the transmission.

The plurality of secondary springs 41 are disposed in the fourth plate 39 along the rotational direction as described above. That is, the plurality of secondary springs 41 may be elastically supported between the second plate 33 and the third plate 37 and the fourth plate 39 to absorb vibrations and shocks in the rotational direction.

 The plurality of secondary springs 41 are disposed at different radii about the axis with the plurality of primary springs 35 described above and serve to act in series. That is, the embodiment of the present invention provides a structure in which the plurality of primary springs 35 and the plurality of secondary springs 41 are arranged in different radii and connected in series to each other, thereby providing elasticity of the plurality of primary springs 35. The plurality of secondary springs 41 may operate in conjunction with each other.

Referring to the operation of the present invention made in this way in detail as follows.

First, a case in which the lockup clutch 14 operates to directly connect the driving force of the engine to the transmission will be described with reference to FIGS. 1 to 4 and 5.

In the state where the lockup clutch 14 is operated to directly connect the driving force of the engine transmitted to the front cover 4 to the transmission, the driving force of the engine is transmitted to the lockup clutch 14 through the front cover 4. The driving force of the engine transmitted to the lockup clutch 14 is transmitted to the first plate 31.

The driving force of the engine transmitted to the first plate 31 is transmitted to the plurality of primary springs 35 to absorb shock and vibration in the rotational direction. That is, the first plate 31 acts as a driving element of the plurality of primary springs 35.

The second plate 33 and the third plate 37 rotate by the elastic force of the plurality of primary springs 33. That is, the second plate 33 and the third plate 37 serve as driven elements of the plurality of primary springs 35.

In this case, the first plate 31 may be rotated in a working distance (a, shown in FIG. 4) in which the plurality of primary springs 35 are compressed.

In addition, the movement is limited while the second extensions 31b provided on the first plate 31 are caught by the third extensions 33c provided on the second plate 33. Up to this point, the plurality of primary springs 35 absorb shocks and vibrations in the rotational direction.

Of course, as the plurality of primary springs 35 are compressed, elastic forces are transmitted to the second plate 33 and the third plate 37, and the plurality of secondary springs are formed by the second plate 33 and the third plate 37. Since the spring 41 is compressed, the plurality of primary springs 35 and the plurality of secondary springs 41 work in series with each other.

Since the third extension part 33c of the second plate 33 is held by the second extension part 31b provided on the first plate 31, the first plate 31, the second plate 33, The third plate 37 may rotate integrally.

Subsequently, as the second plate 33 and the third plate 37 rotate, the plurality of secondary springs 41 are compressed to absorb shocks and vibrations in the rotational direction by the plurality of secondary springs 41.

The second plate 33 and the third plate 37, which act as driven elements by the elastic force of the plurality of primary springs 35, also act as driving elements of the plurality of secondary springs 41. In other words, the second plate 33 and the third plate 37 may include the plurality of secondary springs 41 in an operating distance (b, shown in FIG. 4) in which the plurality of secondary springs 41 are compressed. It can act as a driving element of.

That is, the movement is restricted while the fourth extension portion 43b provided on the fourth plate 39 is caught by the stopper 43 provided on the third plate 37. Therefore, the plurality of secondary springs 41 in series with the plurality of primary springs 35 absorb shocks and vibrations in the rotational direction.

The driving force transmitted to the fourth plate 39 is transmitted to the transmission through the spline hub 45.

In this embodiment of the present invention, the plurality of primary springs 35 absorb vibrations and shocks in the rotational direction and the plurality of secondary springs 41 vibrate in the rotational direction by the elastic force of the plurality of primary springs 35. And absorb shock.

Therefore, even if the plurality of primary springs 35 and the plurality of secondary springs 41 are disposed at different radii, the plurality of primary springs 35 may operate in the same manner as in the form of being connected in series to absorb shocks and vibrations in the rotational direction.

A case where the lockup clutch 14 is released will be described with reference to FIGS. 1 to 4 and 6 as follows.

The driving force of the engine is sequentially transmitted to the front cover 4, the impeller 6, and the turbine 8.

At this time, the driving force transmitted to the turbine 8 is transmitted to the second plate 33 and the third plate 37. In this process, the turbine 8 may act as a damping absorbing shock acting in the rotational direction.

The second plate 33 and the third plate 37 act as driving elements for driving the plurality of secondary springs 41. At this time, the plurality of secondary springs 41 can absorb the shock and vibration acting in the rotational direction. Subsequently, the driving force is transmitted to the fourth plate 39 serving as the driven element of the plurality of secondary springs 41. The driving force transmitted to the fourth plate 39 is transmitted to the spline hub 45.

As an example of another embodiment of the present invention, in the case of arranging the springs in series in a plurality of primary springs 33 or the springs in series in a plurality of secondary springs 37 with the above-described example as a basic structure, The number of springs can be added to increase the stiffness reduction of the springs.

In addition, in the embodiment of the present invention, the plurality of primary springs 33 and the plurality of secondary springs 37 may be disposed at different radii to act in series and also perform a damping function by the turbine 8.

In addition, in the embodiment of the present invention, the first plate 31 is operated after the plurality of primary springs 35 are operated without having a separate stopper device on the first plate 31 and the second plate 33. By providing a structure in which the relative movement is stopped by the second plate 33, it is possible to reduce the number of parts and eliminate the space constraints, thereby reducing the manufacturing cost, thereby improving productivity and increasing design freedom.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

4. front cover, 6. impeller,
8. turbine, 14. lockup clutch,
16. piston, 18. friction material,
20. torsional dampers,
31. First plate, 31a. First extensions, 31b. Second extensions, 31c. home,
33. Second plate, 33a. Multiple spring insertion grooves, 33b. Multiple spring insertion grooves, 33c. Third extensions, 33d. space,
35. a plurality of primary springs,
37. the third plate,
39. Fourth plate, 39a. Fourth extensions, 39b. space,
41. A plurality of secondary springs,
43. Stopper,
45. Spline Hub,
a. 1st spring movement section,
b. 2nd spring moving section

Claims (7)

A front cover 4, an impeller 6 coupled to the front cover 4 and rotating together, a turbine 8 facing the impeller 6, between the impeller 6 and the turbine 8 A reactor 10 arranged at the reactor to change the flow of oil from the turbine 8 to the impeller 6 side, a lockup clutch 14 directly connecting the front cover 4 and the turbine 8, and the It is coupled to the lock-up clutch 14 and includes a tonic damper 20 to absorb the shock and vibration acting in the rotational direction,
The torsional damper 20 is
A first plate 31 connected to the lockup clutch 14 and rotating;
A second plate 33 disposed on one side of the first plate 31,
A plurality of primary springs 35 disposed on the first plate 31 in a rotational direction to elastically support the first plate 31 and the second plate 33;
A third plate 37 integrally coupled with the second plate 33,
A fourth plate 39 disposed between the second plate 33 and the third plate 37 and connected to a spline hub 45 transmitting a driving force to a transmission side;
A plurality of secondary springs 41 disposed on the fourth plate 39 and elastically supporting the fourth plate 39 and the second plate 33,
The first plate 31 may include a plurality of first extension parts 31a connected to the lockup clutch 14 by extending a portion of an outer circumferential side thereof, and a direction in which the first extension parts 31a extend. It includes a plurality of second extension portion 31b extending another portion of the outer circumferential side on the opposite side, the second plate 33 is provided on the outer circumferential side to limit the rotational movement of the second extension portion 31b A plurality of third extensions 33c extending in the radial direction are provided,
The second plate 33 is
Integrally coupled with the turbine 8,
There is provided a space between the third extension (33c) is provided with a primary spring moving section for limiting the movement of the first plate 31 after the primary spring 35 is compressed to a predetermined section,
The third plate 37 is
The stopper 43 is provided at regular intervals toward the axial direction,
The fourth plate 39 is
A plurality of fourth extensions 39a extending to the outer circumferential side are provided to limit rotational movement by the stopper 43.
There is provided a secondary spring moving section that forms a space between the fourth extension (39a) to limit the movement of the fourth plate 39 after the secondary spring 41 is compressed to a predetermined section,
The first extension part 31a of the first plate 31 is
The front end of the first plate 31 is made by bending in the axial direction,
The second extension portion 31b of the first plate 31 is
A torque converter having a tonic twin damper formed by cutting a portion of the first plate (31) and bending it in the axial direction. delete delete delete The method according to claim 1,
When the lockup clutch 14 is connected directly
The primary spring 35 and the secondary spring 41 are disposed at different radii to operate in series to absorb shock and vibration in the rotational direction,
When the lockup clutch 14 is not operated,
The driving force transmitted through the impeller 6 connected to the front cover 4 is transmitted to the secondary spring 41 through the turbine 8, the first plate 31, and the second plate 33. Torque converter having a tonic twin damper transmitted to absorb the shock and vibration in the rotational direction in the secondary spring (41).
delete delete
KR20100099512A 2010-10-12 2010-10-12 Torque convertor having torsional twin damper KR101195941B1 (en)

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Application Number Priority Date Filing Date Title
KR20100099512A KR101195941B1 (en) 2010-10-12 2010-10-12 Torque convertor having torsional twin damper

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KR101195941B1 true KR101195941B1 (en) 2012-10-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101794907B1 (en) 2016-09-30 2017-11-09 한국파워트레인 주식회사 The planetary gear as a semi-resonant torsional vibration damper is equipped with a torque converter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007232006A (en) 2006-02-28 2007-09-13 Aisin Aw Industries Co Ltd Lock-up damper device for torque converter
KR100794266B1 (en) * 2006-08-14 2008-01-11 한국파워트레인 주식회사 Torque converter
JP2010031951A (en) * 2008-07-28 2010-02-12 Exedy Corp Lockup device and hydrodynamic power transmission device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007232006A (en) 2006-02-28 2007-09-13 Aisin Aw Industries Co Ltd Lock-up damper device for torque converter
KR100794266B1 (en) * 2006-08-14 2008-01-11 한국파워트레인 주식회사 Torque converter
JP2010031951A (en) * 2008-07-28 2010-02-12 Exedy Corp Lockup device and hydrodynamic power transmission device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101794907B1 (en) 2016-09-30 2017-11-09 한국파워트레인 주식회사 The planetary gear as a semi-resonant torsional vibration damper is equipped with a torque converter

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