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KR100820206B1 - Lockup Clutch for Torque Converter - Google Patents

Lockup Clutch for Torque Converter Download PDF

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Publication number
KR100820206B1
KR100820206B1 KR1020060104476A KR20060104476A KR100820206B1 KR 100820206 B1 KR100820206 B1 KR 100820206B1 KR 1020060104476 A KR1020060104476 A KR 1020060104476A KR 20060104476 A KR20060104476 A KR 20060104476A KR 100820206 B1 KR100820206 B1 KR 100820206B1
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South Korea
Prior art keywords
piston
front cover
friction member
turbine
torque converter
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KR1020060104476A
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Korean (ko)
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김주호
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현대자동차주식회사
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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
    • 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
    • F16F15/121—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 using springs as elastic members, e.g. metallic springs
    • 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
    • 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

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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

본 발명은 터빈과 프론트커버의 사이에 설치되는 토크컨버터용 록업클러치에 관한 것으로, 그 록업클러치는 상기 터빈(10)과 프론트커버(20) 사이의 공간을 서로 분리하여 각각 유압실(C1)(C2)이 형성되도록 설치된 피스톤(30)과, 상기 피스톤(30)을 터빈(10) 쪽과 연결하는 탄성 커플링기구 및, 상기 프론트커버(20)와 피스톤(30) 사이에 배치되며 상기 피스톤(30)에 원주방향을 따라 연속되게 형성된 마찰부재 삽입홈(31)에 끼워지는 돌기(45)를 갖는 마찰부재(44)로 이루어짐을 특징으로 한다.The present invention relates to a lock-up clutch for a torque converter installed between a turbine and a front cover, and the lock-up clutch separates the space between the turbine 10 and the front cover 20 from each other and separates the hydraulic chamber C1 ( C2) is formed to form a piston 30, an elastic coupling mechanism for connecting the piston 30 to the turbine 10 side, and disposed between the front cover 20 and the piston 30 and the piston ( 30 is characterized in that the friction member 44 having a projection (45) fitted into the friction member insertion groove 31 formed continuously in the circumferential direction.

Description

토크컨버터용 록업클러치{Lock up structure of torque clutch}Lock up structure of torque clutch

도1은 종래의 토크컨버터를 나타낸 개략 구성도;1 is a schematic configuration diagram showing a conventional torque converter;

도2는 본 발명에 따른 토크컨버터용 록업클러치를 나타낸 도면이다.2 is a view showing a lock-up clutch for a torque converter according to the present invention.

※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※

10 : 터빈 12 : 피동부재10 turbine 12 driven member

20 : 프론트커버 30 : 피스톤20: front cover 30: piston

31 : 마찰부재 삽입홈 32 : 리테이닝판31: friction member insertion groove 32: retaining plate

34 : 구동부재 40 : 록업클러치34: drive member 40: lockup clutch

42 : 코일스프링 44 : 마찰부재42: coil spring 44: friction member

45 : 돌기45: turning

본 발명은 토크컨버터용 록업클러치에 관한 것으로서, 보다 상세하게는 토크컨버터의 용량을 증가시킬 수 있는 토크컨버터용 록업클러치에 관한 것이다.The present invention relates to a lockup clutch for a torque converter, and more particularly to a lockup clutch for a torque converter that can increase the capacity of the torque converter.

일반적으로 토크컨버터는 엔진의 크랭크샤프트와 자동변속기의 입력축과의 사이에서 토크를 전달하는 유체 커플링기구를 포함한다.In general, the torque converter includes a fluid coupling mechanism for transmitting torque between the crankshaft of the engine and the input shaft of the automatic transmission.

그리고, 토크컨버터는 소정의 동작조건에 도달하면 토크컨버터를 록업하여 엔진의 크랭크샤프트로부터의 동력을 자동변속기에 직접 전달하고 유체 커플링장치를 우회하도록 하는 록업장치를 포함하며, 이는 연료효율의 개선에 효과적이다.In addition, the torque converter includes a lock-up device that locks up the torque converter when the predetermined operating conditions are reached to transfer power from the crankshaft of the engine directly to the automatic transmission and bypass the fluid coupling device, which improves fuel efficiency. Effective in

이러한 로크컨버터는 결합시에 진동을 유발하는 경향을 가지며, 또한 결합되어 있는 동안에, 록업장치는 돌발적인 가속이나 감속에 의한 진동 또는 내연기관과 관련된 상태를 포함하는 다른 진동을 받게 된다. 따라서, 록업메커니즘에는 진동의 완화를 위해 대개 비틀림진동 감쇠장치를 채택한다.Such lock converters tend to cause vibrations during engagement, and while engaged, the lockup device is subject to sudden vibrations or other vibrations, including those associated with internal combustion engines due to sudden acceleration or deceleration. Therefore, the lockup mechanism usually adopts torsional vibration damping device to alleviate vibration.

토크컨버터는 도1에 도시된 것처럼 작동유체에 의해 토크를 전달하기 위한 임펠러(1), 터빈(2) 및 스테이터(5)를 구비한다.The torque converter has an impeller 1, a turbine 2, and a stator 5 for transmitting torque by the working fluid as shown in FIG. 1.

임펠러(1)는 동력입력축으로부터 입력되는 토크를 수용하는 프론트커버(3)에 고정된다. 임펠러쉘과 프론트커버(3)에 의해 형성되는 유압실은 작동유체로 채워진다. 터빈(2)은 유압실내에서 프론트커버(3)에 대향하여 배치된다. 임펠러(1)가 회전하면, 작동유체는 임펠러(1)에서 터빈(2)으로 흐르고, 이러한 작동에 의해 터빈(2)이 회전한다. 따라서 토크는 터빈(2)으로부터 변속기의 주 구동축으로 전달될 수 있는 것이다.The impeller 1 is fixed to the front cover 3 which receives the torque input from the power input shaft. The hydraulic chamber formed by the impeller shell and the front cover 3 is filled with working fluid. The turbine 2 is arranged opposite to the front cover 3 in the hydraulic chamber. When the impeller 1 rotates, the working fluid flows from the impeller 1 to the turbine 2, and the turbine 2 rotates by this operation. The torque can thus be transmitted from the turbine 2 to the main drive shaft of the transmission.

상기 록업장치를 이루는 록업클러치(6)는 상기 프론트커버(3)와 터빈(2) 사이의 공간에 설치된다. 이러한 록업클러치(6)는 피스톤(4)과, 그 피스톤(4)을 터빈(2)의 동력 출력측상의 부재에 연결하는 탄성 커플링기구로 이루어진다. 피스톤은 프론트커버와 터빈 사이의 공간을 프론트커버측의 제1 유압실 및 터빈측의 제2 유압실로 분리하도록 설치된다. 따라서, 피스톤은 제1 유압실과 제2 유압실의 사이 의 압력차에 의해 프론트커버 방향으로 전, 후진하여 움직일 수 있다. 그리고, 마찰페이싱이 덮고 있는 마찰결합부재는 피스톤에 면한 축방향 표면상에서 프론트커버의 외주부상에 형성된다. 제1 유압실내의 작동유가 배출되고 제2 유압실의 유압이 증가하면, 피스톤은 프론트커버측을 향하여 이동한다. 피스톤의 이러한 운동에 의해 피스톤의 마찰페이싱이 프론트커버의 마찰면을 강하게 누르게 된다.The lockup clutch 6 constituting the lockup device is installed in the space between the front cover 3 and the turbine 2. This lockup clutch 6 consists of a piston 4 and an elastic coupling mechanism for connecting the piston 4 to a member on the power output side of the turbine 2. The piston is provided to separate the space between the front cover and the turbine into a first hydraulic chamber on the front cover side and a second hydraulic chamber on the turbine side. Therefore, the piston can move forward and backward in the front cover direction by the pressure difference between the first hydraulic chamber and the second hydraulic chamber. Then, the friction engagement member covered by the friction facing is formed on the outer peripheral portion of the front cover on the axial surface facing the piston. When the hydraulic oil in the first hydraulic chamber is discharged and the hydraulic pressure in the second hydraulic chamber increases, the piston moves toward the front cover side. This movement of the piston causes the friction facing of the piston to press strongly on the friction surface of the front cover.

그리고, 탄성 커플링기구는 록업클러치의 진동을 감쇠시키는 비틀림진동 감쇠기구의 기능을 갖는다. 탄성 커플링기구는, 예를 들면, 피스톤(4)에 고정 결합된 구동부재(7), 터빈측에 고정 결합된 피동부재(8), 그리고 구동부재와 피동부재 사이에 배치되어 토크 전달을 가능하게 하는 하나 이상의 코일스프링과 같은 탄성부재(9)로 이루어진다.The elastic coupling mechanism has a function of a torsional vibration damping mechanism that damps the vibration of the lockup clutch. The elastic coupling mechanism is, for example, a drive member 7 fixedly coupled to the piston 4, a driven member 8 fixedly coupled to the turbine side, and disposed between the drive member and the driven member to transmit torque. It consists of an elastic member 9, such as one or more coil springs.

록업클러치가 체결되면, 제1 유압실내의 작동유는 그 내주측으로부터 배출되어 제2 유압실로 공급된다. 그 결과, 제2 유압실내의 유압이 제1 유압실내의 유압보다 커진다. 제1 및 제2 유압실 사이의 이러한 압력차에 의해 피스톤은 프론트커버 방향으로 이동하게 된다.When the lockup clutch is engaged, the hydraulic oil in the first hydraulic chamber is discharged from the inner circumferential side and supplied to the second hydraulic chamber. As a result, the oil pressure in the second oil pressure chamber becomes larger than the oil pressure in the first oil pressure chamber. This pressure difference between the first and second hydraulic chambers causes the piston to move in the front cover direction.

이러한 토크컨버터는 록업클러치의 전달토크 용량에 의해 적용 가능 토크가 결정된다. 대개, 토크컨버터를 토크가 큰 엔진에 적용시킬 경우, 전달토크를 증가시켜야 하며, 주로 프론트커버의 크기를 증가시키고 마찰부재를 회전 중심에서 멀리 떨어져 배치시킴으로써 마찰부재의 면적 증가 및 전달토크를 증가시키는 방법을 사용한다.The torque applicable to such a torque converter is determined by the transmission torque capacity of the lock-up clutch. In general, when the torque converter is applied to an engine with a high torque, the transmission torque should be increased, which increases the area of the friction member and increases the transmission torque mainly by increasing the size of the front cover and disposing the friction member away from the rotation center. Use the method.

그러나, 이러한 방법은 토크컨버터의 전체 중량을 증가시키며, 토크컨버터의 전체 크기가 증가되는 단점을 갖는다. 게다가, 마찰부재의 면적이 증가됨에 의해 냉각성능 및 내구성 문제가 제기된다.However, this method increases the total weight of the torque converter and has the disadvantage that the overall size of the torque converter is increased. In addition, as the area of the friction member is increased, cooling performance and durability problems are raised.

즉, 록업클러치의 용량을 증가시키기 위한 종래기술의 한 방법은, 프론트커버, 피스톤, 마찰부재 등의 크기를 증가시켜 마찰부재의 회전중심을 중심축으로부터 멀어지게 함으로써 마찰력을 증대시키는 것으로, 이러한 구조는 프론트커버의 두께를 증가시키기 때문에 중량이 증가되고 원가가 상승되며, 전체적인 크기가 증가되어 장착성에서 불리하다.That is, one method of the prior art for increasing the capacity of the lock-up clutch is to increase the size of the front cover, piston, friction member, etc. to increase the frictional force by moving the center of rotation of the friction member away from the central axis, such a structure Since the front cover increases the thickness, the weight is increased, the cost is increased, and the overall size is increased, which is disadvantageous in mountability.

또한, 록업클러치의 용량을 증가시키기 위한 종래기술의 다른 방법은, 여러 장의 마찰부재를 사용하는 방법으로 마찰부재뿐만 아니라 마찰부재와 마찰부재 사이에 금속재질의 플레이트를 추가로 삽입하는 구조를 갖는 것으로, 축방향의 길이가 길어져 바람직하지 못하며, 중량 및 원가 측면에서 바람직하지 못하다. 따라서 중량 및 원가에 대한 제약이 크지 않은 후륜 대형자동차에 주로 적용되는 단점이 있다.In addition, another method of the related art for increasing the capacity of the lock-up clutch is to have a structure in which a metal plate is additionally inserted between the friction member and the friction member as well as the friction member by using a plurality of friction members. The length in the axial direction is not preferable, and it is not preferable in terms of weight and cost. Therefore, there is a disadvantage that is mainly applied to the rear large-sized vehicle is not large constraints on weight and cost.

또한, 록업클러치의 용량을 증가시키기 위한 종래기술의 또다른 방법은 댐퍼피스톤과 프론트커버 사이에 플레이트를 추가하고 피스톤에 부착되어 있는 마찰부재를 대신하여 플레이트 양면에 마찰부재를 부착하여 양면에서 마찰이 형성되게 하는 구조를 갖는 것으로, 이러한 구조는 록업클러치의 용량을 증대시킬 수는 있으나, 한개의 플레이트와 한개의 마찰부재가 더 추가되어 원가 및 중량 측면에서 불리하다.In addition, another method of the prior art for increasing the capacity of the lock-up clutch is to add a plate between the damper piston and the front cover and to replace the friction member attached to the piston to attach the friction member on both sides of the plate so that the friction on both sides Having a structure to be formed, such a structure can increase the capacity of the lock-up clutch, but one plate and one friction member are added, which is disadvantageous in terms of cost and weight.

따라서, 본 발명은 상기한 종래의 문제점을 해결하기 위한 것으로서, 부품을 추가하지 않아 중량 및 원가를 증가시키지 않고 또한 토크컨버터의 전체 길이를 증가시키지도 않으면서 토크컨버터의 용량을 증대시킬 수 있는 토크컨버터용 록업클러치를 제공하는 것을 그 목적으로 한다.Accordingly, the present invention is to solve the above-mentioned conventional problems, torque converter that can increase the capacity of the torque converter without adding parts and increasing the weight and cost and without increasing the overall length of the torque converter Its purpose is to provide a lock-up clutch.

상기한 목적을 달성하기 위한 기술적인 구성으로서, 본 발명은, 터빈과 프론트커버의 사이에 록업클러치가 구비된 토크컨버터용 록업클러치로서, 상기 터빈과 프론트커버 사이의 공간을 서로 분리하여 각각 유압실이 형성되도록 설치된 피스톤과, 상기 피스톤을 터빈 쪽과 연결하는 탄성 커플링기구 및, 상기 프론트커버와 피스톤 사이에 배치되며 상기 피스톤에 원주방향을 따라 연속되게 형성된 마찰부재 삽입홈에 끼워지는 돌기를 갖는 마찰부재로 이루어진 토크컨버터용 록업클러치를 특징으로 한다.As a technical configuration for achieving the above object, the present invention is a lock-up clutch for a torque converter provided with a lock-up clutch between the turbine and the front cover, the hydraulic chamber by separating the space between the turbine and the front cover each other A piston provided to be formed, an elastic coupling mechanism for connecting the piston to the turbine side, and a protrusion disposed between the front cover and the piston and inserted into a friction member insertion groove formed continuously in the circumferential direction of the piston. Characterized in the lock-up clutch for the torque converter made of a friction member.

이하, 본 발명의 바람직한 일실시예를 첨부된 도면을 참조하여 보다 상세하게 설명하고자 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 따른 토크컨버터용 록업클러치를 나타낸 도면으로, 도1의 우측 상단 부위를 확대한 모습에 해당한다.2 is a view showing a lock-up clutch for a torque converter according to the present invention, which corresponds to an enlarged view of the upper right portion of FIG.

토크컨버터의 전체적인 구성은 종래의 것과 유사하므로 그에 대한 상세한 설명은 생략한다.Since the overall configuration of the torque converter is similar to the conventional one, a detailed description thereof will be omitted.

터빈(10)에 클로(Claw), 즉 피동부재(12)가 고정 설치되며, 이 피동부재(12)는 원주 방향으로 일정 거리 떨어져 여러 개 배치된다.A claw (Claw), that is, the driven member 12 is fixed to the turbine 10, the plurality of driven members 12 are arranged at a distance apart in a circumferential direction.

상기 터빈(10)과 프론트커버(20)의 사이에는 록업클러치(40)가 설치된다.The lockup clutch 40 is installed between the turbine 10 and the front cover 20.

상기 록업클러치(40)는 피스톤(30)과, 상기 피스톤(30)을 터빈(10) 쪽과 연결하는 탄성 커플링기구 및 프론트커버(20) 쪽과 연결하는 마찰기구를 포함한다.The lockup clutch 40 includes a piston 30, an elastic coupling mechanism connecting the piston 30 to the turbine 10 side, and a friction mechanism connecting the front cover 20 side.

상기 피스톤(30)은 터빈(10)과 프론트커버(20) 사이의 공간을 서로 분리하여 각각 유압실(C1)(C2)이 형성되게 한다. 이러한 피스톤(30)은 상기 유압실(C1)(C2) 사이의 압력차에 의해 도면의 좌, 우 방향으로 이동되도록 설치된다.The piston 30 separates the space between the turbine 10 and the front cover 20 from each other so that the hydraulic chambers C1 and C2 are formed. The piston 30 is installed to move in the left and right directions of the drawing by the pressure difference between the hydraulic chamber (C1) (C2).

그리고, 상기 피스톤(30)의 프론트커버(20)쪽 표면에 마찰부재 삽입홈(31)이 형성되며, 이 마찰부재 삽입홈(31)은 원주방향을 따라 연속된다.And, the friction member insertion groove 31 is formed on the front cover 20 side surface of the piston 30, the friction member insertion groove 31 is continuous along the circumferential direction.

상기 탄성 커플링기구는 피스톤(30)에 고정 설치된 리테이닝판(32)을 가지며, 상기 리테이닝판(32)의 외경측 단부에 형성된 커플링부재인 구동부재(34)와, 상기 구동부재(34)에 설치된 코일스프링(42)을 포함한다.The elastic coupling mechanism has a retaining plate 32 fixed to the piston 30, a drive member 34 which is a coupling member formed at an outer diameter side end of the retaining plate 32, and the drive member ( And a coil spring 42 installed at 34.

그리고, 상기 구동부재(34)는 리테이닝판(32)의 외경부위를 일부 절개하여 터빈(10) 쪽으로 절곡시킴에 의해 형성될 수 있으며, 이러한 구동부재(34)는 원주방향을 따라 일정거리 떨어져 여러 개가 구비된다. 따라서, 토크는 리테이닝판(32)으로부터 코일스프링(42)을 통하여 구동부재(34)쪽으로 전달된다.In addition, the driving member 34 may be formed by partially cutting the outer diameter portion of the retaining plate 32 toward the turbine 10, and the driving member 34 may be spaced apart in a circumferential direction. Several are provided. Thus, torque is transmitted from the retaining plate 32 to the drive member 34 through the coil spring 42.

상기 마찰기구는 상기 프론트커버(20)와 피스톤(30) 사이에 배치된 마찰부재(44)를 포함하며, 상기 마찰부재(44)는 얇은 판재의 링 모양을 갖는다.The friction mechanism includes a friction member 44 disposed between the front cover 20 and the piston 30, the friction member 44 has a ring shape of a thin plate.

그리고, 상기 마찰부재(44)의 일측 표면에는 상기 피스톤(30)의 마찰부재 삽입홈(31)에 끼워지도록 돌출된 돌기(45)가 형성된다. 상기 돌기(45)는 원주방향으로 연속되게 형성되거나 원주방향을 따라 여러 개가 설치될 수 있다.In addition, a protrusion 45 is formed on one surface of the friction member 44 to protrude into the friction member insertion groove 31 of the piston 30. The protrusions 45 may be continuously formed in the circumferential direction or may be provided in plural along the circumferential direction.

이렇게 마찰부재(44)의 돌기(45)가 마찰부재 삽입홈(31)에 끼워진 구조는 마찰부재(44)의 양쪽 표면이 프론트커버(20)와 피스톤(30)에 각각 밀착되어 마찰력을 형성하게 하여 락업 용량을 증대시킨다.The projection 45 of the friction member 44 is fitted into the friction member insertion groove 31 so that both surfaces of the friction member 44 are in close contact with the front cover 20 and the piston 30 to form a friction force. To increase the lockup capacity.

즉, 락업 오프시에 마찰부재(44)가 피스톤(30)과 함께 회전하며, 락업 온시에 피스톤이 프론트커버 쪽으로 밀착되면, 상기 마찰부재(44)의 양측 표면에 각각 마찰력이 형성된다. 물론, 락업 온이 이루어졌을 때 마찰부재(44), 프론트커버(20) 및 피스톤(30) 사이에 약간의 상대 회전이 발생할 수 있으나, 피스톤(30)이 프톤트커버(20) 쪽으로 충분히 근접한 상태이고 또한 이 부위에 작동유체가 채워진 상태에서 상기 마찰부재(44), 프톤트커버(20) 및 피스톤(30)이 서로 일체화된 상태인 것처럼 함께 회전하게 된다.That is, when the friction member 44 rotates together with the piston 30 when the lockup is turned off, and the piston is in close contact with the front cover when the lockup is turned on, frictional forces are formed on both surfaces of the friction member 44. Of course, a slight relative rotation may occur between the friction member 44, the front cover 20 and the piston 30 when the lock-up is made, but the piston 30 is sufficiently close toward the front cover 20. In addition, the friction member 44, the front cover 20 and the piston 30 are rotated together in a state in which the working fluid is filled in this part.

그리고, 상기한 구조에서 마찰부재(44)의 돌기(45)는 항상 마찰부재 삽입홈(31)에 끼워진 상태를 유지하는 것이 요구되며, 마찰부재(44)의 두께, 프톤트커버(20)와 피스톤(30) 사이의 최대 간격, 상기 마찰부재 삽입홈(31)의 깊이 및 상기 돌기(45)의 돌출 정도를 적정하게 조정함에 의해 마찰부재(44)의 돌기(45)가 마찰부재 삽입홈(31)에서 빠지지 않도록 한다.In addition, in the above structure, the protrusion 45 of the friction member 44 is always required to maintain a state of being fitted in the friction member insertion groove 31, and the thickness of the friction member 44, the front cover 20, and the like. By appropriately adjusting the maximum distance between the piston 30, the depth of the friction member insertion groove 31 and the degree of protrusion of the projection 45, the projection 45 of the friction member 44 is the friction member insertion groove ( 31).

즉, 상기 마찰부재(44)의 돌기(45)는, 상기 프론트커버(20)와 피스톤(30)이 최대로 멀어지도록 상대 이동한 상태일 때 상기 마찰부재 삽입홈(31)에서 빠지지 않도록 그 돌출 길이가 설정된다.That is, the protrusion 45 of the friction member 44 protrudes from the friction member insertion groove 31 when the front cover 20 and the piston 30 are moved relative to each other so as to move away from each other. The length is set.

상술한 바와 같이 본 발명에 따른 토크컨버터용 록업클러치에 의하면, 프론트커버와 피스톤의 사이에 배치된 마찰부재의 표면에 돌기를 형성하고 그 돌기가 끼워지는 마찰부재 삽입홈을 피스톤에 형성함으로써 록업 온시 마찰부재의 양쪽 표면이 프톤트커버와 피스톤에 각각 밀착되어 마찰력을 발생시킨다.According to the lock-up clutch for a torque converter according to the present invention as described above, when forming a projection on the surface of the friction member disposed between the front cover and the piston and forming a friction member insertion groove into which the projection is fitted, the piston is turned on Both surfaces of the friction member are in close contact with the front cover and the piston to generate friction.

따라서, 별도의 부품을 추가하지 않으면서 토크컨버터의 용량이 증대될 수 있다.Therefore, the capacity of the torque converter can be increased without adding a separate component.

Claims (2)

토크컨버터의 락업을 위해 터빈과 프론트커버 사이에 설치되는 록업클러치로서,A lockup clutch installed between the turbine and the front cover to lock up the torque converter, 상기 터빈(10)과 프론트커버(20) 사이의 공간을 서로 분리하여 각각 유압실(C1)(C2)이 형성되도록 설치된 피스톤(30);A piston (30) installed to separate the space between the turbine (10) and the front cover (20) from each other to form a hydraulic chamber (C1) (C2), respectively; 상기 피스톤(30)을 터빈(10) 쪽과 연결하는 탄성 커플링기구; 및An elastic coupling mechanism for connecting the piston 30 to the turbine 10 side; And 상기 프론트커버(20)와 피스톤(30) 사이에 배치되며 상기 피스톤(30)에 원주방향을 따라 연속되게 형성된 마찰부재 삽입홈(31)에 끼워지는 돌기(45)를 갖는 마찰부재(44), 여기서 돌기(45)는 상기 프론트커버(20)와 피스톤(30)이 최대로 멀어지도록 상대 이동한 상태일 때 상기 마찰부재 삽입홈(31)에서 빠지지 않도록 그 돌출 길이가 설정됨;을 포함하는 것을 특징으로 하는 토크컨버터용 록업클러치.A friction member 44 disposed between the front cover 20 and the piston 30 and having a protrusion 45 fitted into the friction member insertion groove 31 continuously formed in the piston 30 in the circumferential direction; Wherein the projection 45 is the protruding length is set so as not to fall out of the friction member insertion groove 31 when the front cover 20 and the piston 30 is moved relative to the maximum distance; Lock-up clutch for torque converter characterized by the above-mentioned. 삭제delete
KR1020060104476A 2006-10-26 2006-10-26 Lockup Clutch for Torque Converter Expired - Fee Related KR100820206B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013130398A1 (en) * 2012-03-01 2013-09-06 Schaeffler Technologies AG & Co. KG Turbine piston

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09119505A (en) * 1995-10-26 1997-05-06 Nsk Warner Kk Mounting method for adhesive agent in clutch for torque converter with lock up clutch
JP2000081107A (en) 1998-09-04 2000-03-21 Exedy Corp Piston for lockup of torque converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09119505A (en) * 1995-10-26 1997-05-06 Nsk Warner Kk Mounting method for adhesive agent in clutch for torque converter with lock up clutch
JP2000081107A (en) 1998-09-04 2000-03-21 Exedy Corp Piston for lockup of torque converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013130398A1 (en) * 2012-03-01 2013-09-06 Schaeffler Technologies AG & Co. KG Turbine piston
CN104583648A (en) * 2012-03-01 2015-04-29 舍弗勒技术有限两合公司 Turbine piston
CN104583648B (en) * 2012-03-01 2017-05-10 舍弗勒技术股份两合公司 Torque converter

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