KR101738065B1 - Torque convertor for vehicle - Google Patents

Torque convertor for vehicle Download PDF

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Publication number
KR101738065B1
KR101738065B1 KR1020150107058A KR20150107058A KR101738065B1 KR 101738065 B1 KR101738065 B1 KR 101738065B1 KR 1020150107058 A KR1020150107058 A KR 1020150107058A KR 20150107058 A KR20150107058 A KR 20150107058A KR 101738065 B1 KR101738065 B1 KR 101738065B1
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KR
South Korea
Prior art keywords
plate
impeller
turbine
tension spring
spring
Prior art date
Application number
KR1020150107058A
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Korean (ko)
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KR20170014170A (en
Inventor
김순동
권의섭
신순철
Original Assignee
한국파워트레인 주식회사
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Priority to KR1020150107058A priority Critical patent/KR101738065B1/en
Priority to PCT/KR2015/008578 priority patent/WO2017018575A1/en
Publication of KR20170014170A publication Critical patent/KR20170014170A/en
Application granted granted Critical
Publication of KR101738065B1 publication Critical patent/KR101738065B1/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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • 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
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • F16H41/24—Details
    • 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)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The present invention discloses a torque converter for a vehicle that can be applied to a torque converter or a clutch, and realizes a low rigidity of a damper applied to absorb a rotational impact.
The torque converter according to the present invention includes an impeller rotatably coupled to the front cover, a turbine disposed at a position facing the impeller, a reactor positioned between the impeller and the turbine to convert the flow of oil from the turbine into the impeller, And a local damper coupled to the lockup clutch and absorbing shock and vibration acting in the rotating direction, the local damper including a first plate connected to the lockup clutch, a first plate connected to the lockup clutch, And a tension spring disposed radially between the spline hubs for transmitting the driving force to the transmission and absorbing vibration and impact in the rotating direction.

Description

[0001] Torque converter for vehicle [0002]

The present invention relates to a torque converter for a vehicle that can be applied to a torque converter or a clutch and realizes a low rigidity of a damper applied to absorb rotational impact.

Generally, a torque converter is installed between a vehicle engine and a transmission, and uses a fluid to transmit the driving force of the engine to the transmission. The torque converter includes a rotating impeller that receives the driving force of the engine, a turbine that is rotated by the oil discharged from the impeller, and a reactor that increases the torque change rate by directing the flow of the oil flowing back to the impeller in the rotating direction of the impeller Quot; stator ").

The torque converter is equipped with a lock-up clutch (also called a "damper clutch"), which is a means of directly connecting the engine to the transmission, as power transmission efficiency may be degraded if the load acting on the engine is increased. The lockup clutch is disposed between the turbine and the front cover directly connected to the engine so that the rotational power of the engine can be directly transmitted to the transmission through the turbine.

This lockup clutch includes a piston which is axially movable on the turbine shaft. A core plate is disposed between the piston and the front cover, and a friction material is coupled to both sides of the core plate. The core plate is coupled with a torsional damper capable of absorbing impact and vibration acting in the direction of rotation of the shaft.

The above-described local dampers are installed in the rotational direction with springs capable of absorbing the torsional torque when the lockup clutch is operated so that the driving force of the engine can be directly transmitted to the transmission through the turbine.

In such a conventional local damper, the compression coil spring is disposed along the circumferential direction to absorb vibration and shock in the rotating direction.

However, in order to improve the fuel efficiency and low torque of the damper due to the development of a high torque engine, the compression coil spring has a limited range of length for absorbing the elastic force.

Korean Patent Publication No. 10-2012-0062002 (published on June 13, 2012)

Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to reduce the vibration by realizing the improvement of the fuel efficiency of the vehicle and the low rigidity of the local damper, And to improve the ride comfort of the vehicle.

In order to accomplish the above object, the present invention provides a turbine for a turbine, comprising: a front cover; an impeller coupled to the front cover to rotate together; a turbine disposed at a position facing the impeller; A lockup clutch having a piston directly connecting the front cover and the turbine, a torque damper coupled to the lockup clutch to absorb a shock and vibration acting in a rotating direction, Lt; / RTI >

Wherein the local damper includes a first plate connected to the lockup clutch and a tension spring disposed radially between the first plate and the spline hub for transmitting the driving force to the transmission, Torque converter.

And the first plate is coupled to the core plate of the lockup clutch.

Preferably, the second plate is coupled to the first plate while maintaining a gap in the axial direction.

Preferably, the tension spring includes a main tension spring and a sub tension spring having a length smaller than that of the main tension spring. The main tension spring and the sub tension spring are alternately arranged with respect to a rotating direction.

The first plate is provided with a plurality of main spring fixing portions provided in a direction parallel to the axis, and a sub spring fixing portion provided in a portion closer to the rotation center than a position where the main spring fixing portion is disposed and provided in a direction parallel to the axis And the sub spring fixing portion is coupled to the inclined slit provided on the first plate and inclined with respect to the tangential direction of the rotation direction with respect to the central axis.

The inclined slit may be inclined symmetrically with respect to a line extending radially from the center of the rotating shaft.

In the embodiment of the present invention as described above, the tension spring is employed in the local damper, the tension spring acts in multiple stages, and the length of the tension coil spring can be sufficiently increased to realize a low rigidity of the local damper, There is an effect of reducing vibration when applied and improving ride comfort of the vehicle.

1 is a half sectional view of a torque converter for explaining an embodiment of the present invention.
Fig. 2 is an exploded perspective view showing a main part of the embodiment of the present invention in an exploded manner.
3 is a view showing a state before a local damper is operated to explain an embodiment of the present invention.
4 is a view showing a state in which a main spring of a local damper is operated to explain an embodiment of the present invention.
5 is a view showing a state in which a sub spring of a local damper is operated 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.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a half sectional view of an automotive torque converter cut axially to illustrate a first embodiment of the present invention, showing a vehicular torque converter. Fig.

A torque converter according to the present invention includes a front cover 4 connected to a crankshaft of an engine and rotated, an impeller 6 connected to the front cover 4 to rotate together, a turbine 6 disposed at a position facing the impeller 6, And a reactor 10 or a stator which is located between the impeller 6 and the turbine 8 and changes the flow of the oil coming out of the turbine 8 to the side of the impeller 6 . The reactor 10 for transferring oil to the impeller 6 side has the same center of rotation as the front cover 4. And a lockup clutch 14 used as a means for directly connecting the engine and the transmission are disposed between the front cover 4 and the turbine 8. [

The lock-up clutch 14 has a substantially disk-like shape and includes a piston 16 which is movable in the axial direction.

Between the front cover 4 and the piston 16, a core plate 19 having a friction member 18 is engaged.

The lockup clutch 14 is coupled with a torsional damper 20 which serves to absorb a twisting force acting in the direction of rotation of the shaft and attenuate vibrations when the friction material 18 is brought into close contact with the front cover 4 do.

The local damper 20 includes a first plate 23, a second plate 25, and a tension spring 27.

The first plate 23 is connected to the lock-up clutch 14 so that it can receive the driving force of the engine when the lock-up clutch 14 is operated. That is, the first plate 23 is engaged with the core plate 19 of the lock-up clutch 14. On the outer circumferential side of the core plate 19, grooves are provided in a radial direction along the outer circumferential surface, and the first plate 23 is provided with protrusions that mate with the grooves provided in the core plate 19. Therefore, the core plate 19 and the first plate 23 are engaged with each other and can rotate integrally in the rotating direction.

The second plate 25 is engaged with the first plate 23 at a position spaced a predetermined distance from the first plate 23 in the axial direction. That is, the first plate 23 and the second plate 25 are arranged in a state where a predetermined gap is maintained in the axial direction. The first plate 23 and the second plate 25 can be coupled with each other by a rivet or a sub spring fixing portion 39 and a main spring fixing portion 33 described later.

A tension spring 27 is disposed in a space between the first plate 23 and the second plate 25.

The tension spring 27 is preferably composed of a tension coil spring and includes a main spring 29 and a sub spring 31. A plurality of main springs 29 are arranged at regular intervals with reference to the rotation direction about the axis and a plurality of sub springs 31 are arranged at regular intervals between the main springs 29 with reference to the rotation direction .

One side of the main spring 29 is fixed to the main spring fixing portion 33 and the other side thereof can be coupled to the outer peripheral side of the spline hub 35. The main spring fixing portion 33 may be formed of a rivet or a cylindrical connecting member 37 for fixing the first plate 23 and the second plate 25 in a direction parallel to the axis. The connecting member 37 has a cylindrical shape and serves to fix the first plate 23 and the second plate 25 and to fix one end of the main spring 29 . That is, both ends of the main spring 29 are formed in the shape of a ring and can be engaged with the coupling member 37.

The connecting members 37 are disposed at regular intervals along the rotation direction of the first plate 23 and are disposed adjacent to the outer circumferential side of the first plate 23 as possible.

And the other end of the main spring 29 may be engaged with the fixing portion 35a provided on the spline hub 35. [ The fixing portion 35a provided in the spline hub 35 is provided with a protrusion in the radial direction on the outer circumferential surface and an annular protrusion can be provided in the protrusion so that the annular shape provided at one end of the main spring 29 can be fitted.

One side of the sub spring 31 is fixed to the sub spring fixing portion 39 and the other side can be coupled to the outer peripheral side of the spline hub 35. [ It is preferable that the sub spring fixing portion 39 is disposed closer to the center side than the main spring fixing portion 33 when viewed from the center of the rotation shaft. One side of the sub spring fixing portion 39 may be coupled to another connecting member 41 like the main spring fixing portion 33. The connecting member 41 for fixing the sub spring 31 may have a cylindrical shape for fixing the first plate 23 and the second plate 25 in a direction parallel to the axis. The connecting member 41 for fixing the sub spring 31 in the embodiment of the present invention serves to fix the first plate 23 and the second plate 25 while fixing one end of the sub spring 31 . That is, both ends of the sub spring 31 are formed in the shape of a ring, and one end of the sub spring 31 can be engaged with the connection member 41.

The connecting members 41 for fixing the sub springs 31 are disposed at regular intervals along the rotating direction and are disposed between the connecting members 37 connecting the main springs 29.

The other end of the sub spring 31 may be engaged with another fixing portion 35b provided on the outer periphery of the spline hub 35. [ The fixing portion 35b provided on the spline hub 35 is provided with a projection in the radial direction on the outer peripheral surface, and an opening is provided in the projection portion so that the other end of the sub spring 31 can be fitted.

It is preferable that the sub spring 31 has a shorter length than the main spring 29.

The first plate 23 and the second plate 25 are provided with an inclined slit 43 in which the sub spring fixing portion 39 is fitted with the connecting member 41. The inclined slit 43 is inclined with respect to the tangential direction of the rotation direction with respect to the rotation center axis. The inclined slit 43 preferably has a slant shape symmetrically with respect to a line extending radially from the center of the rotating shaft.

The inclined slit 43 has a protruding portion 43a which extends toward the outer circumferential side in the radial direction, a slanting surface 43b which is extended from the protruding portion 43a and which is inclined and which is connected to the inclined surface 43b, And the end portion is referred to as a groove portion 43c (see Figs. 2 to 5).

The operation of the embodiment of the present invention will be described in detail as follows.

In a state in which the lockup clutch 14 is not operated, the driving force of the engine is transmitted to the impeller 6 through the front cover 4. The driving force of the engine transmitted to the impeller 6 is transmitted to the transmission (not shown) via the spline hub 35 via the turbine 8. [

When the lock-up clutch 14 is actuated by the operation of the piston 16, the friction material 18 is brought into close contact with the front cover 4 and the piston 16 so that the driving force of the engine is transmitted to the core plate 19 to the first plate 23. Since the first plate 23 and the second plate 25 are integrally coupled, they can rotate together (see FIG. 3).

When the first plate 23 and the second plate 25 start to rotate, tensile force acts on the main spring 29 to absorb vibration and shock in the rotational direction (see FIG. 4).

At this time, the connecting member 41 to which the one end of the sub spring 31 is coupled remains in the state of being disposed on the projection 43a of the inclined slit 43. That is, the sub spring 31 can maintain the state in which the connecting member 41 is positioned at the protruding portion 43a of the inclined slit 43 by its own length in a state in which no tensile force is applied.

When the first plate 23 and the second plate 25 are continuously rotated, the connecting member 41 of the sub spring 31 is moved in a direction along the inclined surface 43b of the inclined slit 43 toward the axis And is positioned in the groove 43c of the inclined slit 43 (see Fig. 5). Subsequently, when the first plate 23 and the second plate 25 are rotated, the sub spring 31 also absorbs vibrations and shocks in the rotating direction while a tensile force acts. At this time, tensile force acts on the main spring 29 and the sub spring 31 at the same time to absorb vibration and shock in the rotational direction.

And the driving force of the engine is transmitted to the transmission through the spline hub 35. [

That is, in the embodiment of the present invention, when the main spring 29 is operated in the primary direction, the main spring 29 and the sub spring 31 simultaneously operate after absorbing vibration and shock in the rotating direction and after a predetermined time has elapsed, Direction vibration and impact.

As described above, according to the embodiment of the present invention, the tensile coil spring is used to constitute the local damper 20, and the tensile coil spring is acted in multiple stages to stretch the tension coil spring in a sufficient length, When mounted on a torque engine, it is possible to realize a low rigidity of the local damper, thereby reducing vibration and improving ride comfort of the vehicle.

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, 10. Reactor,
14. Lock-up clutch, 16. Piston,
19. Core plate, 20. Localizer damper,
23. A first plate, 25. a second plate,
27. Tension spring, 29. Main spring,
31. Sub spring, 33. Main spring fixing part,
35. Spline hub, 35a, 35b. However,
37, 41. Connecting member, 39. Sub spring member,
43. Sloped slit, 43a. Projection, 43b. Inclined surface, 43c. Groove

Claims (6)

Front cover,
An impeller coupled to the front cover and rotating together,
A turbine disposed at a position facing the impeller,
A reactor positioned between the impeller and the turbine to convert the flow of oil from the turbine to the impeller side,
A lockup clutch having a piston directly connecting the front cover and the turbine,
And a local damper coupled to the lockup clutch for absorbing shock and vibration acting in a rotating direction,
The local damper
A first plate coupled to the lockup clutch,
And a tension spring disposed radially between the first plate and a spline hub for transmitting a driving force to the transmission to absorb vibrations and shocks in a rotating direction,
The tension spring
A main tension spring and a sub tension spring having a smaller length than the main tension spring,
Wherein the main tension spring and the sub tension spring are alternately arranged with respect to a rotating direction. The method according to claim 1,
The first plate
Up clutch is coupled to the core plate of the lock-up clutch. The method according to claim 1,
The first plate
And the second plate is engaged while maintaining an interval in the axial direction. delete The method according to claim 1,
The first plate
A plurality of main spring fixing portions provided in a direction parallel to the axis,
A sub spring fixing portion provided at a portion closer to the rotation center than a position where the main spring fixing portion is disposed and provided in a direction parallel to the axis,
The sub spring fixing portion
And is coupled to the inclined slit provided on the first plate and inclined with respect to the tangential direction of the rotational direction about the central axis. The method of claim 5,
Wherein the inclined slit is inclined symmetrically with respect to a line extending radially from the center of the rotating shaft.
KR1020150107058A 2015-07-29 2015-07-29 Torque convertor for vehicle KR101738065B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150107058A KR101738065B1 (en) 2015-07-29 2015-07-29 Torque convertor for vehicle
PCT/KR2015/008578 WO2017018575A1 (en) 2015-07-29 2015-08-18 Vehicle torque converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150107058A KR101738065B1 (en) 2015-07-29 2015-07-29 Torque convertor for vehicle

Publications (2)

Publication Number Publication Date
KR20170014170A KR20170014170A (en) 2017-02-08
KR101738065B1 true KR101738065B1 (en) 2017-05-19

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KR1020150107058A KR101738065B1 (en) 2015-07-29 2015-07-29 Torque convertor for vehicle

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WO (1) WO2017018575A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102074137B1 (en) * 2017-08-31 2020-02-06 주식회사 카펙발레오 Power train for electric vehicles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2542711Y2 (en) * 1990-08-24 1997-07-30 株式会社ユニシアジェックス Power transmission for automatic transmission

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04316745A (en) * 1991-04-15 1992-11-09 Atsugi Unisia Corp Fly wheel
SE509655C2 (en) * 1994-02-11 1999-02-22 Luk Getriebe Systeme Gmbh Hydrodynamic torque converter
US5682969A (en) * 1995-10-04 1997-11-04 Ford Global Technologies, Inc. Resilient input to a lockup clutch
KR100394626B1 (en) * 2000-12-05 2003-08-14 현대자동차주식회사 Triple mass vibration damping flywheel for vehicles
CN102597567A (en) 2009-11-05 2012-07-18 株式会社艾科赛迪 Power transmission device for torque converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2542711Y2 (en) * 1990-08-24 1997-07-30 株式会社ユニシアジェックス Power transmission for automatic transmission

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KR20170014170A (en) 2017-02-08
WO2017018575A1 (en) 2017-02-02

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