KR101649355B1 - Torque converter for vehicle - Google Patents

Torque converter for vehicle Download PDF

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Publication number
KR101649355B1
KR101649355B1 KR1020150041770A KR20150041770A KR101649355B1 KR 101649355 B1 KR101649355 B1 KR 101649355B1 KR 1020150041770 A KR1020150041770 A KR 1020150041770A KR 20150041770 A KR20150041770 A KR 20150041770A KR 101649355 B1 KR101649355 B1 KR 101649355B1
Authority
KR
South Korea
Prior art keywords
front cover
shaft
seal member
turbine
impeller
Prior art date
Application number
KR1020150041770A
Other languages
Korean (ko)
Inventor
이진수
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 KR1020150041770A priority Critical patent/KR101649355B1/en
Application granted granted Critical
Publication of KR101649355B1 publication Critical patent/KR101649355B1/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
    • 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

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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)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The present invention relates to a torque converter for a vehicle in which a structure of a sealing provided between a shaft of a front cover and a transmission input shaft is improved. The torque converter for a vehicle comprises: an impeller which is coupled to the front cover and is rotated together; a turbine which is disposed at a position facing the impeller; a reactor which is positioned between the impeller and the turbine and changes the transmission fluid flowing out of the turbine, to the impeller; a lock-up clutch which includes a piston directly connecting the front cover to the turbine; and a torsional damper which is coupled to the lock-up clutch and is provided with springs absorbing shock and vibration applied in a rotation direction, wherein a transmission fluid blocking means is provided between the inner circumferential surface of the front cover shaft and the outer circumferential surface of the transmission input shaft, and the transmission fluid blocking means includes a seal member which comes in close contact with the shaft of the front cover in the axial direction, and a fixed member which fixes the seal member in close contact with one side of the seal member and is fixed to the inner circumferential surface of the front cover shaft.

Description

Technical Field [0001] The present invention relates to a torque converter for a vehicle,

The present invention relates to a torque converter for a vehicle which improves the structure of a sealing provided between an axis of a front cover and a transmission input shaft.

Generally, a torque converter is installed between an engine of a vehicle 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 which receives the driving force of the engine, a turbine which is rotated by the oil discharged from the impeller, and a reactor Quot;).

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. The piston is engaged with a friction material which is in friction contact with the front cover. The piston is fitted with a torsional damper capable of absorbing impact and vibration acting in the direction of rotation of the shaft when the friction material is engaged with the front cover.

Such a conventional torque converter is provided with a seal between the inner peripheral surface of the front cover shaft and the outer peripheral surface of the transmission input shaft. The front cover shaft is aligned with the rotation axis of the engine, and therefore, when the front cover shaft and the transmission input shaft become in an unaligned state, the existing oil seal is very vulnerable to high pressure and high-speed slip rotation conditions.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a seat cover provided between a front cover shaft and a transmission input shaft even when a front cover shaft and a transmission input shaft are in an unaligned state, And to provide a torque converter for a vehicle that sufficiently copes with high-speed slip and increases quality.

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 that directly connects the front cover and the turbine, a spring coupled to the lockup clutch to absorb impact and vibration in a rotating direction, And a localized damper,

An oil shielding means is provided between the inner circumferential surface of the front cover shaft and the outer circumferential surface of the transmission input shaft, the oil shielding means includes a seal member which is axially closely attached to the shaft of the front cover, And a fixing member fixed to the inner peripheral surface of the front cover shaft while fixing the member.

The seal member is preferably formed in a round shape in which the portion contacting the transmission input shaft is cut in the axial direction.

The fixing member may include a fixing part fixed to the front cover shaft and a tightening part extended from the fixing part and closely attached to one side surface of the seal member.

And the outer circumferential surface of the seal member and the fixing portion of the fixing member are spaced apart from each other in the radial direction with respect to the input shaft of the transmission.

And the fixing portion and the tight contact portion are preferably bent in a perpendicular direction.

According to the embodiment of the present invention as described above, the seal member is provided between the front cover shaft and the transmission input shaft as the oil shielding means, and the seal member at the portion contacting the transmission input shaft is formed in a round shape, Even when the front cover shaft and the transmission input shaft are in an unbalanced state, the seal member can be kept in a state of being in close contact with the transmission input shaft, so that it is possible to sufficiently cope with the slip of high pressure and high speed to increase the quality.

Brief Description of the Drawings Fig. 1 is a half sectional view taken along the axial direction of a vehicle torque converter for explaining an embodiment of the present invention. Fig.
2 is an exploded perspective view showing a front cover shaft and oil shielding means provided on the front cover shaft for explaining an embodiment of the present invention.
Fig. 3 is a diagram showing the main parts of the embodiment of the present invention in detail.

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 half sectional view for explaining an embodiment of the present invention, showing a torque converter.

The torque converter according to the embodiment of the present invention is provided with a front cover 1 connected to a crankshaft on the engine side and rotating, a impeller 3 connected to the front cover 1 and rotating together, And a stator 7 disposed between the impeller 3 and the turbine 5 for transferring the flow of oil from the turbine 5 to the impeller 3 side ). The stator 7, which transmits oil to the impeller 3 side, has the same center of rotation as the front cover 1. And a lockup clutch 9 used as a means for directly connecting the engine and the transmission are disposed between the front cover 1 and the turbine 5. [

The lock-up clutch 9 has a substantially disk-like shape and includes a piston 11 which can move in the axial direction. A core plate (12) is disposed between the front cover (1) and the piston (11). On both sides of the core plate 12, a friction member 13 frictionally contacting the front cover 1 and the piston 11 is engaged.

The piston 11 is moved in the axial direction by the hydraulic pressure, and the lock-up clutch 9 can be operated.

The lockup clutch 9 is provided with a local damper 15 for absorbing a torsional force acting in the direction of rotation of the shaft and for damping vibrations when the friction material 13 is in close contact with the front cover 1 and the piston 11 , Torsional damper) are combined.

On the other hand, the front cover 1 is integrally coupled to the front cover shaft 17. Of course, the front cover shaft 17 is connected to the rotation shaft (not shown) of the engine, and receives the driving force of the engine and transmits the driving force to the front cover 1. [ A space is provided inside the front cover shaft 17 and a transmission input shaft 19 is disposed in this space. The transmission input shaft 19 is splined to the shaft of the turbine 5 or the shaft of the local damper 15 to transmit the driving force of the engine transmitted through the turbine 5 or the local damper 15 to a transmission .

On the other hand, an oil shutoff means 21 is provided between the inner circumferential surface of the front cover shaft 17 and the outer circumferential surface of the transmission input shaft 19. The oil shut-off means 21 is for forming a pressure circuit between the transmission and the engine, and includes a seal member 23 and a fixing member 25.

The seal member 23 has a substantially ring shape and includes a first side surface portion 23a, a second side surface portion 23b, an outer peripheral surface portion 23c, and a round portion 23d.

As shown in Fig. 3, the first side surface portion 23a, the second side surface portion 23b, and the outer circumferential surface portion 23c are preferably cut in the axial direction and each have a substantially straight line in cross section. It is preferable that the round portion 23d is cut in the axial direction so that the end face has a semicircular shape or a round shape.

The first side surface portion 23a is in close contact with the side surface of the front cover shaft 17. And the second side surface portion 23b can be closely contacted in the axial direction by the fixing member 25 described above. It is preferable that the outer circumferential surface portion 23c is disposed at a predetermined gap G from the above-described fixing member 25. The round portion 23d is disposed in contact with the transmission input shaft 19 so as to be in close contact with the transmission input shaft 19. [ The round portion 23d is in close contact with the outer circumferential surface of the transmission input shaft 19 and can relatively rotate.

The fixing member 25 may be made of a metal material and is disposed on the outer periphery of the seal member 23 and includes a fixing portion 25a and a tight fitting portion 25b as shown in Fig. The fixing portion 25a is engaged with the inner peripheral surface of the front cover shaft 17 and the contact portion 25b is brought into close contact with the second side surface portion 23b of the seal member 23. [ The fixing portion 25a may be cylindrical and the fastening portion 25b may extend in the direction of the center of the shaft at the fixing portion 25a. Therefore, the fixing portion 25a and the close contact portion 25b can be arranged substantially at right angles.

A constant gap G is maintained between the outer circumferential surface portion 23c of the seal member 23 and the fixing portion 25a of the fixing member 25 described above. The arrangement structure of the seal member 23 and the fixing member 25 means that the seal member 23 can move in the radial direction with respect to the shaft.

On the other hand, it is preferable that the seal member 23 and the fixing member 25 are arranged in close contact with each other in the axial direction so as to rotate integrally and not to rotate relative to each other.

On the other hand, a plurality of grooves (not shown) are provided in the radial direction on the surface where the seal member 23 and the fixing member 25 are in contact with each other so that the seal member 23 can move in the radial direction with respect to the axis, 25) and the relative motion.

Hereinafter, the operation of the embodiment of the present invention will be described in detail.

First, the seal member 23 is disposed on the inner surface of the front cover shaft 17 and the fixing member 25 is press-fitted to fix the seal member 23 to the inside of the front cover shaft 17. At this time, as described above, the close contact portion 25b of the fixing member 25 presses the second side surface portion 23b of the seal member 23 in the axial direction so that the seal member 23 is pressed against the inner surface of the front cover shaft 17 And fixed in the axial direction by the fixing member 25. Therefore, the seal member 23 and the fixing member 25 can rotate integrally.

The front cover 1 is fixed to the front cover shaft 17 and the rotation shaft (not shown) of the engine is joined to the front cover shaft 17 and aligned. At this time, when the front cover shaft 17 and the transmission input shaft 19 are not aligned, the seal member 23 keeps the gap G in the radial direction with respect to the transmission input shaft 19, 23 can be kept in close contact with the outer circumferential surface of the transmission input shaft 19.

Therefore, the rounded portion 23d of the seal member 23 maintains a state of being in close contact with the transmission input shaft 19 in a round shape, so that the same contact surface can always be maintained even if there is an alignment error of the transmission input shaft 19.

The embodiment of the present invention is characterized in that the seal member 23 is provided as oil shielding means between the front cover shaft 17 and the transmission input shaft 19 and the roundness of the seal member 23 as a portion contacting the transmission input shaft 9 The front cover shaft 17 and the transmission input shaft 19 are provided with a space in which the axial end surface of the front cover portion 23d is semicircular or round and the seal member 23 is movable in the radial direction of the transmission input shaft 19. [ The seal member 23 can be kept in a state of being in close contact with the transmission input shaft 19 so that it can sufficiently cope with high-pressure and high-speed slippage and improve the quality.

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.

1. Front cover,
3. Impeller,
5. Turbines,
7. Stator,
9. Lock-up clutch,
11. Piston,
12. Core plate,
13. Friction material,
15. Local damper,
17. Front cover shaft,
19. Transmission input shaft,
21. Oil shutoff means,
23. Seal member, 23a. A first side portion, 23b. A second side portion, 23c. An outer circumferential surface portion, 23d. Round part,
25. Fixing member, 25a. Government, 25b. Tight contact portion

Claims (5)

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 and provided with springs that absorb impact and vibration acting in the rotational direction,
An oil shielding means is provided between the inner peripheral surface of the front cover shaft and the outer peripheral surface of the transmission input shaft,
The oil-
A seal member closely attached to the shaft of the front cover in the axial direction, and
And a fixing member which is in close contact with one side surface of the seal member to fix the seal member and is fixed to the inner circumferential surface of the front cover shaft,
The seal member
Wherein a section contacting the transmission input shaft is cut in an axial direction and formed into a round shape,
The fixing member
A fixing portion fixed to the front cover shaft, and a tightening portion extending from the fixing portion and closely attached to one side surface of the seal member,
Wherein the outer peripheral portion of the seal member and the fixed portion of the fixing member are spaced apart from each other in the radial direction with respect to the transmission input shaft. delete delete delete The method according to claim 1,
The fixing part and the close-
Wherein the torque converter comprises:
KR1020150041770A 2015-03-25 2015-03-25 Torque converter for vehicle KR101649355B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150041770A KR101649355B1 (en) 2015-03-25 2015-03-25 Torque converter for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150041770A KR101649355B1 (en) 2015-03-25 2015-03-25 Torque converter for vehicle

Publications (1)

Publication Number Publication Date
KR101649355B1 true KR101649355B1 (en) 2016-08-19

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KR1020150041770A KR101649355B1 (en) 2015-03-25 2015-03-25 Torque converter for vehicle

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060124421A1 (en) * 2004-12-15 2006-06-15 Zf Friedrichshafen Ag Hydrodynamic clutch device
JP2006200607A (en) * 2005-01-19 2006-08-03 Toyota Motor Corp Fluid transmission device
KR20090054134A (en) * 2007-11-26 2009-05-29 현대자동차주식회사 Brake of automatic transmission for vehicles
KR101377253B1 (en) * 2012-12-17 2014-03-26 한국파워트레인 주식회사 Torque converter for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060124421A1 (en) * 2004-12-15 2006-06-15 Zf Friedrichshafen Ag Hydrodynamic clutch device
JP2006200607A (en) * 2005-01-19 2006-08-03 Toyota Motor Corp Fluid transmission device
KR20090054134A (en) * 2007-11-26 2009-05-29 현대자동차주식회사 Brake of automatic transmission for vehicles
KR101377253B1 (en) * 2012-12-17 2014-03-26 한국파워트레인 주식회사 Torque converter for vehicle

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Payment date: 20190724

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