KR20020088901A - a multiple disc clutch of automatic transmission - Google Patents
a multiple disc clutch of automatic transmission Download PDFInfo
- Publication number
- KR20020088901A KR20020088901A KR1020010027972A KR20010027972A KR20020088901A KR 20020088901 A KR20020088901 A KR 20020088901A KR 1020010027972 A KR1020010027972 A KR 1020010027972A KR 20010027972 A KR20010027972 A KR 20010027972A KR 20020088901 A KR20020088901 A KR 20020088901A
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- KR
- South Korea
- Prior art keywords
- plate
- disk
- automatic transmission
- clutch
- contact
- Prior art date
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Classifications
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/126—Details not specific to one of the before-mentioned types adjustment for wear or play
Abstract
Description
본 발명은 자동변속기의 다판클러치에 관한 것으로, 특히 변속감이 향상되고 연비도 개선될 수 있도록 된 자동변속기의 다판클러치에 관한 것이다.The present invention relates to a multi-plate clutch of an automatic transmission, and more particularly, to a multi-plate clutch of an automatic transmission in which a shifting feeling can be improved and fuel economy can be improved.
일반적으로 다판클러치는 몇 개의 구동판과 피동판이 반복적으로 겹쳐진 구조로 이루어져 있으며, 오일에 담겨진 상태에서 사용되는 습식클러치로서 자동변속기의 프론트클러치나 리어클러치에 많이 사용되고 있다.In general, the multi-plate clutch consists of a structure in which several driving plates and driven plates are repeatedly overlapped, and is a wet clutch used in an oil state, and is widely used for front clutch and rear clutch of an automatic transmission.
도 1은 자동변속기에 적용된 다판클러치의 일예를 도시한 것으로서, 다판클러치의 분해사시도와 결합상태 단면도이다.1 illustrates an example of a multi-plate clutch applied to an automatic transmission, and is an exploded perspective view and a cross-sectional view of the multi-plate clutch.
도시된 바와 같이 내주면에 스플라인이 형성된 디스크(1)들과 외주면에 스플라인이 형성된 플레이트(2)들이 반복적으로 겹쳐지는 상태로 리테이너(3)에 보유되어 있으며, 유압에 의해 작동되는 피스톤(4)에 의해 가압되어 서로 겹쳐지면 동력의 전달이 일어나고, 피스톤(4)에 의한 가압상태가 해제되면 리턴스프링(5)에 의해 상호 이격되어 동력이 차단될 수 있도록 되어 있다.As shown, the disks 1 having splines formed on the inner circumferential surface and the plates 2 having splines formed on the outer circumferential surface thereof are retained in the retainer 3 in a state where they are repeatedly overlapped with each other. When the pressure is overlapped with each other, power is transmitted, and when the pressure state by the piston 4 is released, the power is shut off by the return spring 5.
한편, 상기 디스크(1)와 플레이트(2)는 도 2에 도시된 바와 같이, 그 단면이 모두 평평한 형상으로 이루어져 있다.On the other hand, the disk 1 and the plate 2, as shown in Figure 2, both cross section is made of a flat shape.
즉, 상기 디스크(1)와 플레이트(2)의 접촉면은 양자 모두 단순한 평면으로 되어 있다.That is, the contact surfaces of the disk 1 and the plate 2 are both simple planes.
그런데, 상기 피스톤(4)에 의해 디스크(1)와 플레이트(2)가 밀려질 때 이들은 양자의 접촉면이 완전히 평행인 상태를 유지하면서 거리가 가까워져 접촉되는 것이 아니고, 약간 기울어진 상태로 밀려져서 접촉면중 다른 부위에 비해 먼저 닿는 부분이 생기게 되며, 이와 같은 디스크(1)와 플레이트(2)의 언밸런스한 접촉에 의하여 변속감이 저하되는 문제점이 있었다.By the way, when the disk 1 and the plate 2 are pushed by the piston 4, they are not in close contact with each other while keeping the contact surfaces of the two completely parallel, but are pushed in a slightly inclined state to the contact surface. Compared with other portions of the first contact portion is generated, there is a problem that the shift feeling is reduced by the unbalanced contact of the disk (1) and the plate (2).
또한, 상기 디스크(1)와 플레이트(2)는 서로 이격상태에 있을 때 구동측이 피동측에 영향을 주지 않는 상태 즉, 동력의 전달측면에서 완전히 분리되어 있는 것이 바람직하지만 디스크(1)와 플레이트(2)의 사이에는 오일이 존재하여 드래크토크(drag torque)가 발생되므로 상호간에 어느정도의 영향을 주게 된다.Further, the disk 1 and the plate 2 are preferably completely separated from the driving side when the drive side does not affect the driven side when the disk 1 and the plate 2 are separated from each other. Since oil is present between (2) and drag torque is generated, it has some influence on each other.
그런데, 상기와 같이 디스크(1)와 플레이트(2)의 접촉면이 모두 평면일 경우 양자의 간격이 일정하므로 드래그토크의 값이 커지게 되며, 이는 다판클러치의 동력단속성능을 저하시킬 뿐만 아니라, 크게는 자동차의 연비를 저하시키게 되는 문제점이 있었다.However, as described above, when the contact surfaces of the disk 1 and the plate 2 are both flat, the value of the drag torque is increased because the distance between them is constant, which not only lowers the power interruption performance of the multi-plate clutch, but also greatly increases it. There is a problem that reduces the fuel economy of the car.
이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 디스크와 플레이트의 전 접촉면이 균일하게 접촉될 수 있게 됨으로써 변속감이 개선되고, 또한 드래그토크가 저감되어 동력단속성능의 향상 및 연비의 개선이 이루어질 수 있도록 된 자동변속기의 다판클러치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, the entire contact surface of the disk and the plate can be uniformly contacted, the shifting feeling is improved, and drag torque is reduced to improve the power interruption performance and fuel economy improvement The purpose is to provide a multi-plate clutch of the automatic transmission that can be made.
도 1은 자동변속기의 다판클러치의 분해사시도 및 결합상태 단면도,1 is an exploded perspective view and a cross-sectional view of a multi-plate clutch of an automatic transmission;
도 2는 종래 다판클러치의 디스크와 플레이트의 개략 단면도,2 is a schematic cross-sectional view of a disk and a plate of a conventional multi-plate clutch,
도 3은 본 발명에 따른 다판클러치의 디스크와 플레이트의 개략 단면도이다.Figure 3 is a schematic cross-sectional view of the disk and plate of the multi-plate clutch according to the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1 : 디스크,2 : 플레이트,1: disc, 2: plate,
2a : 크라운(crown),3 : 리테이너,2a: crown, 3: retainer,
4 : 피스톤,5 : 리턴스프링.4: Piston, 5: Return Spring.
상기와 같은 목적을 달성하기 위한 본 발명은, 반복 배치되는 디스크와 플레이트들이 리테이너에 보유되고, 유압에 의해 작동되는 피스톤에 의해 가압되어 상호 밀착된 상태에서 동력을 전달하며, 리턴스프링에 의해 이격된 상태에서 동력의 단속이 이루어지도록 된 자동변속기의 다판클러치에 있어서, 상기 플레이트의 양쪽면에 크라운이 형성되는 구조로 이루어진다.The present invention for achieving the above object, the disc and the plate is repeatedly arranged is retained in the retainer, by the piston operated by the hydraulic pressure to transfer power in close contact with each other, spaced apart by the return spring In the multi-plate clutch of the automatic transmission in which the power is interrupted in the state, the plate is formed on both sides of the plate.
따라서, 디스크와 플레이트간의 균일한 접촉이 이루어지고, 디스크와 플레이트간의 거리가 일정하지 않게 되므로 드래그토크가 저감되게 된다.Therefore, uniform contact is made between the disk and the plate, and the distance between the disk and the plate is not constant and drag torque is reduced.
이하, 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.
도 3은 본 발명에 따른 다판클러치의 디스크와 플레이트의 단면도로서, 본 발명은 플레이트(2)의 형상만이 변경될 뿐 그 외 모든 부분은 종래와 동일하므로동일한 부분에 대한 설명은 생략하기로 한다.3 is a cross-sectional view of a disk and a plate of the multi-plate clutch according to the present invention, the present invention is changed only the shape of the plate 2, all other parts are the same as the conventional description of the same parts will be omitted. .
본 발명의 상기 플레이트(2)는 디스크(1)와 접촉되는 양쪽면에 가운데 부분이 볼록하도록 크라운(2a)이 형성된다.The plate 2 of the present invention is formed with a crown (2a) so that the center portion is convex on both sides in contact with the disk (1).
이와 같이 가운데 부분이 볼록하게 성형되는 것은 종래에 언밸런스한 접촉이 일어날 때 주로 디스크(1)와 플레이트(2)의 양측 단부(도 1과 같은 설치상태에서 외경과 내경에 해당되는 부분)가 먼저 접촉되는 경향이 강하기 때문이다.The convex shape of the center portion is that when the unbalanced contact occurs in the related art, the disc 1 and the two ends of the plate 2 (parts corresponding to the outer diameter and the inner diameter in the installation state as shown in FIG. 1) contact first. This is because they tend to be strong.
반면 전술한 바와 같이, 디스크(1)는 종래와 동일하게 양쪽면 모두 평면으로 형성된다.On the other hand, as described above, the disk 1 is formed in both planes as in the prior art.
따라서, 상기 피스톤(4)에 의해 디스크(1)와 플레이트(2)의 간격이 좁혀질 때 양측 접촉면중 크라운(2a)이 형성된 가운데 부분이 종래 먼저 접촉되던 단부가 접촉되는 시점과 동시에 접촉되므로 디스크(1)와 플레이트(2)의 접촉면 전체가 균형있게 접촉될 수 있게 되고, 이에 따라 동력의 연결과 단속이 정확한 순간에 이루어질 수 있게 되므로 변속감이 향상된다.Therefore, when the distance between the disc 1 and the plate 2 is narrowed by the piston 4, the center part of the two-contact surface where the crown 2a is formed is contacted at the same time as the point where the end of the conventional contact was first contacted. The whole contact surface of (1) and plate (2) can be contacted in a balanced manner, and thus the feeling of shifting is improved because the connection and interruption of the power can be made at the correct moment.
또한, 디스크(1)와 플레이트(2)가 이격된 상태에서 양측 접촉면간의 거리는 단부에서는 멀고 중심부에서는 가까운 상태가 된다. 즉, 오일이 존재하는 틈새공간의 너비가 일정치 않아 드래크토크의 크기가 작아지므로 다판클러치의 동력단속성능이 향상됨은 물론, 이에 따라 구동력의 손실이 발생되지 않으므로 자동차의 연비가 향상된다.In the state where the disk 1 and the plate 2 are spaced apart, the distance between the two contact surfaces is far from the end and close to the center. That is, since the width of the gap space in which the oil is present is not constant, the size of the drag torque is reduced, so that the power interruption performance of the multi-plate clutch is improved, and accordingly, the loss of driving force is not generated, thereby improving the fuel efficiency of the vehicle.
이상 설명한 바와 같이 본 발명에 따르면, 클러치 플레이트의 양면 중앙에크라운을 성형하여 플레이트와 디스크가 균일하게 접촉되고 드래크토크가 저감됨으로써 변속감이 향상되고, 동력단속성능이 향상될 뿐만 아니라, 연비가 개선되는 효과가 있다.As described above, according to the present invention, by forming a crown on both sides of the clutch plate, the plate and the disc are uniformly contacted and the drag torque is reduced, thereby improving the feeling of shifting, improving the power interruption performance, and improving fuel economy. It is effective.
Claims (1)
Priority Applications (1)
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KR1020010027972A KR20020088901A (en) | 2001-05-22 | 2001-05-22 | a multiple disc clutch of automatic transmission |
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KR1020010027972A KR20020088901A (en) | 2001-05-22 | 2001-05-22 | a multiple disc clutch of automatic transmission |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08159168A (en) * | 1994-12-02 | 1996-06-18 | Exedy Corp | Cushioning plate and clutch disk assembly unit |
KR19980028497U (en) * | 1996-11-22 | 1998-08-05 | 박병재 | Multi-plate Clutch Assembly for Automatic Transmission |
US5819888A (en) * | 1995-10-27 | 1998-10-13 | Shinko Denki Kabushiki Kaisha | Friction plates for friction type coupling device |
JPH11230197A (en) * | 1998-02-20 | 1999-08-27 | Mitsubishi Motors Corp | Wet clutch device |
KR20020051024A (en) * | 2000-12-22 | 2002-06-28 | 이계안 | Clutch disc |
-
2001
- 2001-05-22 KR KR1020010027972A patent/KR20020088901A/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08159168A (en) * | 1994-12-02 | 1996-06-18 | Exedy Corp | Cushioning plate and clutch disk assembly unit |
US5819888A (en) * | 1995-10-27 | 1998-10-13 | Shinko Denki Kabushiki Kaisha | Friction plates for friction type coupling device |
KR19980028497U (en) * | 1996-11-22 | 1998-08-05 | 박병재 | Multi-plate Clutch Assembly for Automatic Transmission |
JPH11230197A (en) * | 1998-02-20 | 1999-08-27 | Mitsubishi Motors Corp | Wet clutch device |
KR20020051024A (en) * | 2000-12-22 | 2002-06-28 | 이계안 | Clutch disc |
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