KR20090030598A - Torque converter for vehicle - Google Patents

Torque converter for vehicle Download PDF

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Publication number
KR20090030598A
KR20090030598A KR1020070096003A KR20070096003A KR20090030598A KR 20090030598 A KR20090030598 A KR 20090030598A KR 1020070096003 A KR1020070096003 A KR 1020070096003A KR 20070096003 A KR20070096003 A KR 20070096003A KR 20090030598 A KR20090030598 A KR 20090030598A
Authority
KR
South Korea
Prior art keywords
front cover
oil
impeller
inlet
outlet
Prior art date
Application number
KR1020070096003A
Other languages
Korean (ko)
Inventor
이재용
장재덕
주인식
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.)
Filing date
Publication date
Application filed by 한국파워트레인 주식회사 filed Critical 한국파워트레인 주식회사
Priority to KR1020070096003A priority Critical patent/KR20090030598A/en
Publication of KR20090030598A publication Critical patent/KR20090030598A/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
    • F16H2045/0215—Details of oil circulation
    • 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
    • F16H2045/0226—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 comprising two or more vibration dampers
    • F16H2045/0231—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 comprising two or more vibration dampers arranged in series
    • 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
    • F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
    • 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
    • F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
    • F16H2045/0289—Details of friction surfaces of the lock-up clutch
    • 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)
  • Control Of Fluid Gearings (AREA)

Abstract

The present invention relates to a vehicle torque converter that is easy to manufacture and improves durability while effectively cooling the heat generated between the front cover and the friction material.

The vehicle torque converter of the present invention includes a front cover, a rotating impeller coupled to the front cover, a turbine disposed at a position facing the impeller and rotating together with the rotation of the impeller, located between the impeller and the turbine, A torsional damper having a reactor for directing the flow to the impeller, a lockup clutch for directly connecting the front cover and the turbine, springs coupled to the lockup clutch and arranged in the circumferential direction of the shaft, and retaining plates supporting the springs; Includes; The front cover is provided with cooling oil circulation grooves having a constant depth at the face where the lockup clutch is in contact.

Description

Torque converter for vehicle

The present invention relates to a vehicle torque converter, and more particularly, to a vehicle torque converter that is easy to manufacture and can improve durability while effectively cooling the heat generated between the front cover and the friction material.

In general, the torque converter is installed between the engine of the vehicle and the transmission to transmit the driving force of the engine to the transmission using a fluid. Such a torque converter receives a driving force of an engine, a turbine that rotates by an impeller that is rotated by oil discharged from an impeller, and a reactor that increases the rate of change of torque by directing the flow of oil flowing back to the impeller in a direction of rotation of the impeller ('stator' "Also".

Torque converters are equipped with a lock-up clutch (also called a 'damper clutch'), a means of direct connection between the engine and the transmission, as the load on the engine can decrease power transmission efficiency. The lockup clutch is disposed between the front cover and the turbine directly connected to the engine so that the rotational power of the engine can be transmitted directly to the turbine.

This lockup clutch includes a piston that is axially movably coupled to the turbine shaft. And the piston is coupled to the friction material in friction contact with the front cover. And when the friction material coupled to the piston is coupled to the front cover is coupled a torsional damper (Torsional damper) that can absorb the shock and vibration acting in the direction of rotation of the shaft.

Each time the lock-up clutch is operated, the friction material coupled to the piston is in contact with the front cover to generate high heat. Therefore, the friction material coupled to the piston and the high heat generated in the front cover during the operation of the lockup clutch can easily degrade the oil contained in the torque converter. Therefore, it is necessary to quickly cool the heat generated from the friction material and the front cover coupled to the piston. Therefore, as shown in FIG. 4, the grooves 101a are formed in the friction materials 103 that are coupled to the piston 101. Since the conventional technology separates the friction material 103 into several and couples it to the piston 101, there is a problem that the friction material may peel off when it is repeatedly used without being easily processed and combined with the friction material 103. .

Accordingly, the present invention has been proposed to solve the above problems, and an object of the present invention is to easily cool and heat the friction between the front cover and the friction material, while facilitating the processing and joining of the friction material and increasing the durability of the friction material. To provide a vehicle torque converter that can be made.

In order to achieve the object as described above, the present invention, the front cover, the impeller coupled to the front cover to rotate, the turbine disposed in a position facing the impeller to rotate together with the rotation of the impeller, the impeller and A reactor located between the turbines for changing the flow of oil from the turbine to the impeller side, a lockup clutch capable of directly connecting the front cover and the turbine, springs coupled to the lockup clutch and arranged in the circumferential direction of the shaft; A torsional damper having a retaining plate for supporting these springs; The front cover provides a torque converter for a vehicle provided with oil circulation grooves having a constant depth at the surface where the lockup clutch is in contact.

The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, and the inlet and the outlet are preferably disposed in a direction toward the center of rotation of the front cover.

The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, and the inlet and the outlet are preferably disposed in a direction toward the opposite side to the center of rotation of the front cover.

The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, wherein the inlet and the outlet face away from the center of rotation of the front cover and are disposed toward the center of rotation of the front cover. It is preferable to arrange repeatedly.

The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, wherein one of the inlet and the outlet is disposed toward the center of rotation of the front cover and the other is the center of rotation of the front cover. It is preferably arranged in a direction facing the opposite side of the.

The present invention can be coupled to the piston by processing the friction material in a simple structure while maintaining a sufficient cooling effect as the oil flows through the oil flow groove formed in the front cover to the oil distribution groove formed on the front cover. The repeated use prevents the friction material from peeling off, thereby increasing the durability of the torque converter.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a torque converter applied to a transmission of a vehicle and a half section road cut in the axial direction to explain an embodiment according to the present invention. The torque converter of the present invention is disposed at a position facing the impeller 6 and the impeller 6, which are connected to the crankshaft on the engine side and rotated, connected to the front cover 4, and rotated together. Turbine 8 and a reactor 10 (also referred to as a "stator") located between the impeller 6 and the turbine 8 to redirect the flow of oil from the turbine 8 to the impeller 6 side. do. 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 has a piston 16 formed in a substantially disk shape, and the piston 16 is coupled with a friction material 18 which can be in contact with the front cover 4. And the piston 16 is arranged to be rotatable relative to the center of the axis and to be moved in the axial direction. On the other hand, in the lockup clutch 14 or the turbine, a torsional damper 40 which absorbs the torsional force acting in the rotational direction of the shaft when the friction material 18 is in close contact with the front cover 4 and reduces vibrations. damper) is combined.

On the other hand, it is preferable that the above-mentioned friction material 18 is coupled to the piston 16 to which a conventional one in which the whole forms a plate-shaped donut is applied. One surface of the front cover 4 to which the friction material 18 contacts is provided with a plurality of oil circulation grooves 4a, as shown in FIG. The oil circulation grooves 4a cool the high heat as the oil circulates when the lockup clutch 14 is operated, that is, when the friction material 18 contacts the front cover 4. These oil circulation grooves 4a can be formed by a press to a predetermined depth. Since the oil circulation grooves 4a are formed by the press on the front cover 4, the oil circulation grooves 4a may be manufactured through a simple process. The oil circulation grooves 4a are preferably shaped to have a constant depth in the axial direction. The oil circulation groove 4a is provided with an inlet 4b and an outlet 4c so that oil can circulate. The oil circulation groove 4a is formed such that the inlet 4b and the outlet 4c are axially or vice versa with respect to the central axis of rotation of the front cover 4 as shown in FIG. 2. Is placed. The oil circulation grooves 4a of this structure are those through which the oil of the inner or outer portion of the front cover can circulate with respect to the surface where the friction material 18 is in contact with the front cover 4, respectively. These oil circulating grooves 4a may be arranged such that the inlet 4b and the outlet 4c face each other toward the center of rotation of the front cover 4 and those facing away from the center of rotation. Such a structure can appropriately respond to the design conditions of the torque converter.

The oil circulation grooves 4a thus formed are in close contact with the front cover 4 when the lockup clutch 14 is operated. At this time, high heat is generated between the front cover 4 and the friction material 18. The high heat is cooled while the oil contained therein passes through the inlet 4b and the outlet 4c of the oil circulation groove 4a. Therefore, the high heat generated while the friction material 18 is in contact with the front cover 4 can be easily cooled. In particular, since the friction material 18 does not have to have a complicated structure for cooling, the friction material 18 can be easily manufactured with a simple structure, and can be firmly coupled to the piston even when repeatedly used. Therefore, the durability of the torque converter can be further increased.

3 is a view for explaining a second embodiment according to the present invention and shows one surface of the front cover 21. The front cover 21 is a surface in contact with the friction material (not shown), and a plurality of oil circulation grooves 21a are provided in this portion. The oil circulation grooves 21a of the second embodiment of the present invention are characterized in that the inlet 21b and the outlet 21c are disposed in opposite directions with respect to the center of rotation of the front cover 4, respectively. The oil circulation groove 21a is to allow the flow of oil to be transferred to the outside and the inside of the front cover 21 based on the contact surface of the friction material. The oil circulation groove 21a can satisfy various conditions when designing a torque converter, and can further improve design freedom.

1 is a half cross-sectional view of a torque converter for explaining an embodiment according to the present invention.

2 is a view showing a portion of the inner side of the front cover for explaining the first embodiment according to the present invention.

3 is a view showing a portion of the inner side of the front cover for explaining the second embodiment according to the present invention;

4 is a view showing a state in which a friction material is coupled to the piston forming the damper clutch in order to explain the prior art.

Claims (5)

Front cover; An impeller coupled to the front cover to rotate; A turbine disposed at a position facing the impeller and rotating together with the rotation of the impeller; A reactor positioned between the impeller and the turbine to change oil flow from the turbine to the impeller side; A lockup clutch capable of directly connecting the front cover and the turbine; A torsional damper having springs coupled to the lockup clutch and disposed in the circumferential direction of the shaft and having a retaining plate supporting the springs; And the front cover is provided with oil circulation grooves having a constant depth at a surface where the lockup clutch is in contact. The method according to claim 1, The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, and the inlet and the outlet are disposed in a direction toward the center of rotation of the front cover. The method according to claim 1, The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, and the inlet and the outlet are disposed in a direction toward the opposite side to the center of rotation of the front cover. The method according to claim 1, The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, wherein the inlet and the outlet face away from the center of rotation of the front cover and are disposed toward the center of rotation of the front cover. Repeatedly arranged vehicle torque converter. The method according to claim 1, The oil circulation grooves have an inlet through which oil is introduced and an outlet through which the introduced oil is discharged, wherein one of the inlet and the outlet is disposed toward the rotation center side of the front cover and the other is the rotation center of the front cover. A torque converter for a vehicle disposed in a direction facing the opposite side of the.
KR1020070096003A 2007-09-20 2007-09-20 Torque converter for vehicle KR20090030598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070096003A KR20090030598A (en) 2007-09-20 2007-09-20 Torque converter for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070096003A KR20090030598A (en) 2007-09-20 2007-09-20 Torque converter for vehicle

Publications (1)

Publication Number Publication Date
KR20090030598A true KR20090030598A (en) 2009-03-25

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Application Number Title Priority Date Filing Date
KR1020070096003A KR20090030598A (en) 2007-09-20 2007-09-20 Torque converter for vehicle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101298269B1 (en) * 2011-10-26 2013-08-22 한국파워트레인 주식회사 Torque converter for vehicle
KR101887607B1 (en) * 2017-10-17 2018-08-10 주식회사 카펙발레오 Torque converter for vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101298269B1 (en) * 2011-10-26 2013-08-22 한국파워트레인 주식회사 Torque converter for vehicle
KR101887607B1 (en) * 2017-10-17 2018-08-10 주식회사 카펙발레오 Torque converter for vehicle

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E601 Decision to refuse application