KR20160125158A - Vibration Reduction Apparatus for Motor Vehicle Torque Converter Using Free Motion Pendulum - Google Patents

Vibration Reduction Apparatus for Motor Vehicle Torque Converter Using Free Motion Pendulum Download PDF

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Publication number
KR20160125158A
KR20160125158A KR1020150055986A KR20150055986A KR20160125158A KR 20160125158 A KR20160125158 A KR 20160125158A KR 1020150055986 A KR1020150055986 A KR 1020150055986A KR 20150055986 A KR20150055986 A KR 20150055986A KR 20160125158 A KR20160125158 A KR 20160125158A
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KR
South Korea
Prior art keywords
pendulum
support plate
vibration reduction
torque converter
coupling pin
Prior art date
Application number
KR1020150055986A
Other languages
Korean (ko)
Inventor
송성영
최완
이국선
신순철
Original Assignee
한국파워트레인 주식회사
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 한국파워트레인 주식회사 filed Critical 한국파워트레인 주식회사
Priority to KR1020150055986A priority Critical patent/KR20160125158A/en
Publication of KR20160125158A publication Critical patent/KR20160125158A/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
    • 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
    • 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
    • F16F15/1201—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 for damping of axial or radial, i.e. non-torsional vibrations
    • 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
    • F16H2041/24—
    • 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
    • F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
    • F16H2045/0252—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means having a damper arranged on input side of the lock-up clutch

Abstract

More particularly, the present invention relates to a vibration reduction device for a vehicle torque converter that attenuates vibrations and shocks in a rotational direction of a torque converter, To a vibration reduction device for a vehicle torque converter using a free-motion pendulum which realizes position-variable movement of a pendulum through free motion of a coupling pin.

Description

TECHNICAL FIELD [0001] The present invention relates to a vibration reduction device for a vehicle torque converter using a free-motion pendulum,

More particularly, the present invention relates to a vibration reduction device for a vehicle torque converter that attenuates vibrations and shocks in a rotational direction of a torque converter, To a vibration reduction device for a vehicle torque converter using a free-motion pendulum which realizes position-variable movement of a pendulum through free motion of a coupling pin.

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 rate of torque change by directing the flow of 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") that can directly connect between the engine and the transmission, as power transmission efficiency may be degraded if the load on the engine increases. The lock-up 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. And a torsional damper capable of absorbing shock and vibration acting in the rotating direction when the lock-up clutch is operated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a half sectional view of a conventional torque converter for a vehicle cut in an axial direction, showing a torque converter for a vehicle. Fig.

The conventional torque converter includes a front cover 4 connected to a crankshaft of the engine and rotated, an impeller 6 connected to the front cover 4 and rotating together, a turbine 6 disposed at a position facing the impeller 6 And a reactor 10 or a stator 10 positioned between the impeller 6 and the turbine 8 to change the flow of the oil from the turbine 8 to the impeller 6 side. The reactor 10 for transferring oil to the impeller 6 side has the same center of rotation as the front cover 4. The torque converter is provided with a lock-up clutch 14 as a means of directly connecting the engine and the transmission. A lock-up clutch 14 is 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.

A torque damper 20 is coupled to the lock-up clutch 14. The local damper 20 transmits the driving force transmitted through the lockup clutch 14 to the turbine 8 to absorb the twisting force acting in the rotating direction of the shaft and attenuate the vibration.

The lock-up clutch 14 described above includes a friction plate 33 disposed between the front cover 4 and the piston 16. The friction plate (33) has friction surfaces (35) on both sides thereof. Therefore, when the piston 16 moves in the direction toward the front cover 4 by the oil pressure, the lockup clutch 14 moves the friction materials 35 to the front cover 4 while closely contacting the front cover 4 and the piston 16 The transmitted driving force can be transmitted to the friction plate 33. [

In recent years, there has been known a technique in which a vibration reduction device using a pendulum is applied to a localized damper 20 in order to reduce vibrations and shocks generated in the local dampers 20. [

2 is an exploded perspective view of a conventional local damper 10 and vibration reduction sections 20 and 30. As shown in the figure, the first vibration reduction portion 20 may be coupled to one side of the local damper 10 by rivets, and the second vibration reduction portion 30 may be coupled to the other side by a rivet. The first vibration reduction section 20 and the second vibration reduction section 20 are arranged such that pendulums moving in the radial direction due to the centrifugal force are disposed to act as a mass to absorb vibrations and shocks in the rotational direction of the local damper 10 have.

3 is an exploded perspective view of the vibration reducing section 30. As shown in Fig. The vibration reduction section 30 includes a support plate 31, a plurality of pendulums 32 and 33, and a plurality of engagement pins 35. [

The support plate 31 can be riveted to the local damper 10. The pendulums 32 and 33 are coupled to the support plate 31 so as to be freely rotatable by a predetermined distance along the circumferential direction of the support plate 31. [

The vibration reduction unit 30 can absorb vibrations and shocks in the rotational direction of the local damper 10 through the pendulums 32 and 33 moving in the radial direction by the centrifugal force.

The vibration reducing structure of the local damper 10 is advantageous in that vibrations and shocks of the local damper 10 can be reduced through movement of the pendulums 32 and 33. However, Vibration and shock reduction efficiency is lowered due to the impact generated when the pendulums 32 and 33 are lowered. Further, when the weight of the pendulums 32 and 33 is reduced, the vibration and impact reduction efficiency is further decreased.

Korean Registered Patent No. 10-1358998 (Registered on Feb. 28, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vibration damper which absorbs vibrations and shocks using a pendulum whose position is changed according to a centrifugal force, It is possible to sufficiently attenuate the vibration and the shock in the rotational direction not only at the rotational speed region but also at the low rotational speed region so that the vibration of the vehicle torque converter using the crossed pendulum to improve the fuel economy by operating the lock- And a reduction device.

In particular, the present invention relates to a vibration reduction device for a vehicle torque converter using a free pendulum type pendulum which is configured to allow free movement of a coupling pin connecting a support plate and a pendulum by centrifugal force on a support place, .

Another object of the present invention is to provide a vibration reduction device for a torque converter for a vehicle using a free-motion pendulum capable of changing a position of a pendulum through a plurality of displacement orders by configuring a pendulum connected to a coupling pin so as to be free to move.

A vibration reduction device for a vehicle torque converter using a free-motion pendulum according to the present invention comprises a front cover, an impeller coupled to the front cover and rotating together, a turbine disposed at a position facing the impeller, A lockup clutch disposed between the turbine and including a reactor for switching the flow of oil from the turbine to the impeller side, a piston for directly connecting the front cover to the turbine, And a spline hub which is connected to the torque damper and transmits driving force transmitted to the torque damper to a transmission. The torque converter for a vehicle includes a torque converter The damper is coupled to one side of the damper or one side of the spline hub Reduction apparatus; Wherein the vibration reduction device comprises: a support plate; A plurality of first pendulums disposed on one side of the support plate; And a plurality of engaging pins that are fitted to the pin holes of the support plate and are formed to be smaller than a cross sectional area of the pin holes, and change the position of the first pendulum by free motion according to a centrifugal force; .

Here, the vibration reduction device may include: a plurality of second pendulums disposed on the other side of the support plate; Wherein the coupling pin is formed to penetrate through the support plate and has one end coupled to the first pendulum and the other end coupled to the second pendulum, .

In addition, the coupling pin has a circular section, and the first and second pendulums are formed with first and second coupling holes that are rotatably coupled to the coupling pin.

Further, a plurality of the engagement pins are radially arranged with a predetermined distance radially outward from the center of the support plate.

In addition, the cross-sectional area of the first and second engagement holes is formed to be larger than the cross-sectional area of the engagement pin.

The vibration reduction device for a torque converter for a vehicle using the eccentric pendulum of the present invention constructed as above can be used not only in a high rotation speed region of the engine but also in a low speed region of the engine, The impact can be remarkably reduced and the lockup clutch can be operated in the low-speed region of the engine, thereby improving the fuel efficiency of the vehicle.

In particular, the position of the pendulum can be changed through free-moving coupling pins, and the coupling pin can be freely rotatably coupled to the pendulum, so that a plurality of displacement orders exist, thereby increasing the vibration damping efficiency.

Further, the pendulum can be increased in mass by eliminating the collision between the pendulum and the support plate during pendulum movement, and the structure is simplified compared with the conventional vibration reduction apparatus.

1 is an axial sectional view of a general torque converter
2 is an exploded perspective view of a conventional local damper and a centrifugal absorption section
3 is an exploded perspective view of a conventional centrifugal absorption section
FIG. 4 is a perspective view of a vibration reduction device according to an embodiment of the present invention.
5 is an exploded perspective view of a vibration damping device according to an embodiment of the present invention.
5 is a plan view of a vibration reduction device according to an embodiment of the present invention.
7 is a perspective view of a support plate according to an embodiment of the present invention.
8 is a front view of a first pendulum and a second pendulum according to an embodiment of the present invention;

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

4 is an overall perspective view of a vibration reduction device 1000 (hereinafter, referred to as 'vibration reduction device') of a torque converter for a vehicle using a pendulum according to an embodiment of the present invention. A perspective view is shown.

As shown in the figure, the vibration damping device 1000 includes a support plate 100 formed in an annular shape, a plurality of first and second support plates 100 and 200 disposed on both sides in the axial direction of the support plate 100 and rotatable in the circumferential direction and the radial direction, The first and second pendulums 200 and 300 are coupled to the support plate 100 such that the first and second pendulums 200 and 300 and the first and second pendulums 200 and 300 are rotatable on the support plate 100 And an engaging pin (500).

At this time, a plurality of coupling pins 500 are arranged radially on the support plate 100 adjacent to the outer periphery of the support plate 100, and are configured to freely move along the radial and circumferential directions of the support plate. The coupling pin 500 is rotatably coupled to the first and second pendulums 200 and 300 so that the first and second pendulums 200 and 300 are supported by the support plate 100 in the radial direction and the circumferential direction. Hereinafter, the detailed structure of the vibration damping device 1000 of the present invention having the above structure will be described in detail with reference to the drawings.

FIG. 6 is a front perspective view of a vibration damping apparatus 1000 according to an embodiment of the present invention, and FIG. 7 is a front view of a support plate 100 according to an embodiment of the present invention. The support plate 100 is provided with a through hole 110 passing through the center of the support plate 100 and a pin hole 120 spaced outward in the radial direction from the center of the support plate 100, .

The pinhole 120 is formed to have a larger cross sectional area than that of the coupling pin 500 when the coupling pin 500 is coupled with the pinhole 120 such that the coupling pin 500 is rotatable in the axial direction. A free motion space 600 is formed on the pinhole 120 even when the coupling pin 500 is coupled to the pinhole 120 as shown in FIG. Therefore, the coupling pin 500 is configured to be freely movable in the radial direction and the circumferential direction of the support plate 100 as well as rotated by the centrifugal force of the support plate 100 through the free movement space 600.

Although the pinhole 120 is circular in shape and the coupling pin 500 is also shown as a cylindrical shape, any shape may be used as long as the coupling pin 500 can freely rotate.

8 is a perspective view of a first pendulum 200 and a second pendulum 300 according to an embodiment of the present invention. The first pendulum 200 and the second pendulum 300 have the same shape and the first pendulum 200 is disposed on one side of the support plate 100 and the second pendulum 300 is disposed on one side of the support plate 100 And the first pendulum 200 on the other side. Although the first pendulum 200 and the second pendulum 300 are shown to be arranged radially, four pendules may be added or subtracted depending on the purpose of use. The upper first pendulum 210 disposed on the upper side will be described as an example. On the upper first pendulum 210, a coupling hole 215 into which the coupling pin 500 is rotatably fitted is formed. The coupling holes 215 may be spaced apart in the circumferential direction to form a pair. At this time, the cross-sectional area of the coupling hole 215 is formed to be larger than the cross-sectional area of the coupling pin 500 so that the pendulum can freely move in the radial direction and the circumferential direction of the support plate 100 .

Through the above-described structure, two displacement orders according to the free motion of the coupling pin 500 and the free motion of the pendulum are generated during the pendulum movement, so that the vibration preventing efficiency can be further maximized.

The technical idea should not be construed as being limited to the above-described embodiment of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, such modifications and changes are within the scope of protection of the present invention as long as it is obvious to those skilled in the art.

1000: Vibration reduction device
100: support plate 110: through hole
120: Pinhole
200: First pendulum 215: Coupling hole
300: Second pendulum 315: Coupling hole
500: coupling pin 600: free motion space

Claims (5)

A front cover, a front cover, an impeller rotating together with the front cover, a turbine disposed at a position facing the impeller, and a reactor positioned between the impeller and the turbine to change the flow of oil from the turbine to the impeller side. A torque damper which is coupled to the lockup clutch and absorbs impact and vibration acting in a rotating direction, and a transmission damper connected to the torque damper, A torque converter for a vehicle including a spline hub for transmitting a driving force transmitted to a local damper to a transmission,
The vehicle torque converter includes:
A vibration reduction device coupled to one side of the local damper or one side of the spline hub; / RTI >
Wherein the vibration reduction device comprises:
A support plate;
A plurality of first pendulums disposed on one side of the support plate; And
A plurality of engaging pins which are inserted into the pin holes of the support plate and are formed to be smaller than a cross sectional area of the pin holes and change the position of the first pendulum by free motion according to the centrifugal force;
Wherein the vibration reducing device comprises a free-motion pendulum.
The method according to claim 1,
Wherein the vibration reduction device comprises:
A plurality of second pendulums disposed on the other side of the support plate; / RTI >
The coupling pin
Wherein the first pendulum is coupled to the first pendulum and the second pendulum is coupled to the second pendulum,
Wherein the position of the second pendulum is changed by free motion according to the centrifugal force.
3. The method of claim 2,
Wherein the coupling pin has a circular cross section and the first and second pendulums are provided with first and second coupling holes rotatably coupled to the coupling pin, Abatement device.
3. The method of claim 2,
The coupling pin
And a plurality of radially disposed radially disposed radially outwardly spaced radially outward from a center of the support plate.
The method of claim 3,
Wherein a cross-sectional area of the first and second coupling holes
Wherein the coupling pin is formed to have a larger cross-sectional area than that of the coupling pin.
KR1020150055986A 2015-04-21 2015-04-21 Vibration Reduction Apparatus for Motor Vehicle Torque Converter Using Free Motion Pendulum KR20160125158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150055986A KR20160125158A (en) 2015-04-21 2015-04-21 Vibration Reduction Apparatus for Motor Vehicle Torque Converter Using Free Motion Pendulum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150055986A KR20160125158A (en) 2015-04-21 2015-04-21 Vibration Reduction Apparatus for Motor Vehicle Torque Converter Using Free Motion Pendulum

Publications (1)

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KR20160125158A true KR20160125158A (en) 2016-10-31

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