JP2580139Y2 - Lockup clutch for torque converter - Google Patents
Lockup clutch for torque converterInfo
- Publication number
- JP2580139Y2 JP2580139Y2 JP1989105158U JP10515889U JP2580139Y2 JP 2580139 Y2 JP2580139 Y2 JP 2580139Y2 JP 1989105158 U JP1989105158 U JP 1989105158U JP 10515889 U JP10515889 U JP 10515889U JP 2580139 Y2 JP2580139 Y2 JP 2580139Y2
- Authority
- JP
- Japan
- Prior art keywords
- elastic member
- torque converter
- clutch
- piston
- lock
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Landscapes
- Mechanical Operated Clutches (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は自動車等のトルクコンバータに内蔵されるロ
ックアップクラッチ（直結クラッチ）に関する。DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION FIELD The present invention relates to a lock-up clutch (direct-coupled clutch) incorporated in a torque converter of an automobile or the like.
従来の技術 一般に自動車の自動変速機に使用されるトルクコンバ
ータは、車速が一定速度以上になると、流体継手による
滑り損失をなくし、動力伝達効果を上げるため、入力側
のコンバータハウジングから出力側の出力軸にロックア
ップクラッチを介して動力を伝達するように構成されて
いる。そして、ロックアップクラッチは、駆動トルクの
変動に起因する捩り振動を効果的に吸振して円滑な動力
伝達ができるように、コンバータハウジングに摩擦接合
されるピストンと出力軸にスプライン嵌合されるハブと
が、円周方向に複数配設された弾性部材（圧縮ばね）に
より、相対回動可能に連結されている（例えば、特開昭
57−190125号公報参照）。2. Description of the Related Art In general, a torque converter used for an automatic transmission of an automobile, when the vehicle speed exceeds a certain speed, eliminates a slip loss due to a fluid coupling and enhances a power transmission effect. The power is transmitted to the shaft via a lock-up clutch. The lock-up clutch has a piston that is frictionally connected to the converter housing and a hub that is spline-fitted to the output shaft so as to effectively absorb torsional vibrations caused by fluctuations in drive torque and to perform smooth power transmission. Are connected to each other by a plurality of elastic members (compression springs) arranged in the circumferential direction so as to be relatively rotatable.
57-190125).
考案が解決しようとする課題 このような従来のロックアップクラッチは、ピストン
外周端のフランジ部に複数の窓を形成し、この窓に弾性
部材を収容しているため、ピストンとハブの相対回動時
に、弾性部材が遠心力の作用を受けての窓の開口縁とこ
すれ合い、弾性部材が摩耗するという問題があった。Problems to be Solved by the Invention In such a conventional lock-up clutch, a plurality of windows are formed in a flange portion at the outer peripheral end of the piston, and an elastic member is housed in the window, so that the relative rotation of the piston and the hub is increased. Sometimes, the elastic member rubs against the opening edge of the window under the action of the centrifugal force, causing a problem that the elastic member is worn.
課題を解決するための手段 即ち本考案は、トルクコンバータの入力部に、接合す
るピストンとハブに固定した出力部材とを複数の弾性部
材で相対回動可能に連繋したトルクコンバータのロック
アップクラッチであって、前記ピストンの外周端に、前
記弾性部材の外周側に位置する環状のフランジ部を設
け、前記フランジ部の軸方向略中央部の内周面を凹ませ
ることにより、前記弾性部材の長さと略同じ長さで、か
つ前記弾性部材の輪郭と略同じ曲率の輪郭で、且つ前記
弾性部材の外周側を覆っている断面円弧状の保持部を形
成し、該保持部の周方向の両端面を前記弾性部材の長さ
方向の端部に係合する係合面とすると共に、フランジ部
のタービン側には前記係合面を周方向に連結する環状の
フランジ端部を設けた。Means for Solving the Problems That is, the present invention is a lock-up clutch of a torque converter in which a piston to be joined and an output member fixed to a hub are connected to an input portion of the torque converter by a plurality of elastic members so as to be relatively rotatable. At the outer peripheral end of the piston, an annular flange portion is provided on the outer peripheral side of the elastic member, and an inner peripheral surface of a substantially central portion in the axial direction of the flange portion is depressed, so that the length of the elastic member is reduced. A holding portion having an arc-shaped cross section that is substantially the same length as that of the elastic member, and has a contour that is substantially the same as the contour of the elastic member, and covers the outer peripheral side of the elastic member. The surface is an engagement surface that engages with the longitudinal end of the elastic member, and an annular flange end that connects the engagement surface in the circumferential direction is provided on the turbine side of the flange portion.
作用 ロックアップクラッチの接合時、ピストンとハブとが
相対回動すると、弾性部材に遠心力が作用し、弾性部材
が広い接触面積でもって保持部に接触する。Operation When the lock-up clutch is engaged, when the piston and the hub rotate relatively, centrifugal force acts on the elastic member, and the elastic member comes into contact with the holding portion with a large contact area.
実施例 以下本考案の実施例を図面に基づき詳述する。Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
第１図〜第２図において、１は図外の出力軸にスプラ
イン嵌合されるハブであり、このハブ１には、ピストン
２を回動可能な状態に嵌合する一方、出力部材３を固定
してある。このうち、ピストン２には、その外周端にフ
ランジ部４を形成してあり、このフランジ部４の内周側
に支持部材５を固定してある。そして、支持部材５には
弾性部材６を収容するためのシート部７を複数形成して
ある。８は保持部であり、この保持部８は、そのフラン
ジ部４をシート部７の周方向長さと略同一長さに切り起
こし、さらに弾性部材６の輪郭と略同じ曲率の輪郭で、
かつ前記弾性部材６の外周側を覆っている断面円弧状に
成形されていて、該保持部８の周方向の端部としての切
り起こし部は、前記弾性部材６の長さ方向の端部が係合
する係合面11になっている。又、フランジ部４のにター
ビン側端には、係合面11を周方向に連結する環状のフラ
ンジ端部4aが設けられている。一方、出力部材３は、そ
の外周端に弾性部材６の略中心部端面に当接する爪部９
を形成してある。10はトルクコンバータの入力部として
のコンバータハウジングである。1 and 2, reference numeral 1 denotes a hub that is spline-fitted to an output shaft (not shown). The hub 1 is fitted with a piston 2 in a rotatable state, while the output member 3 is It is fixed. The piston 2 has a flange portion 4 formed on the outer peripheral end thereof, and a support member 5 is fixed to the inner peripheral side of the flange portion 4. The support member 5 has a plurality of sheet portions 7 for accommodating the elastic members 6. Reference numeral 8 denotes a holding portion. The holding portion 8 cuts and raises the flange portion 4 to have substantially the same length as the circumferential length of the seat portion 7 and further has a contour having substantially the same curvature as the contour of the elastic member 6.
Further, the elastic member 6 is formed in an arc-shaped cross-section covering the outer peripheral side thereof, and the cut-and-raised portion as the circumferential end of the holding portion 8 has an end in the longitudinal direction of the elastic member 6. The engaging surface 11 engages. At the turbine side end of the flange portion 4, an annular flange end portion 4a for connecting the engaging surface 11 in the circumferential direction is provided. On the other hand, the output member 3 has a claw 9 on its outer peripheral end, which abuts the substantially central end surface of the elastic member 6.
Is formed. Reference numeral 10 denotes a converter housing as an input part of the torque converter.
尚、弾性部材６は、外周側面端がフランジ部４の切り
起こし端としての係合面11,11に弾接すると共に、内周
側両端がシート部７の両端12,12に弾接する一方、略中
央部両端が爪部９に弾接している。従って、ピストン５
とハブ１とが複数の弾性部材６によって相対回動可能に
連繋されることとなり、両者が相対回動した際には、両
者によって弾性部材６が圧縮されることとなる。The elastic member 6 has an outer peripheral side end elastically contacting with the engaging surfaces 11, 11 as cut-and-raised ends of the flange portion 4, and an inner peripheral side both ends elastically contact with both ends 12, 12 of the seat portion 7, Both ends of the central portion are in elastic contact with the claw portion 9. Therefore, the piston 5
The hub 1 and the hub 1 are connected by a plurality of elastic members 6 so as to be relatively rotatable. When the two are relatively rotated, the elastic members 6 are compressed by both.
以上の実施例構造によれば、車速が一定速度以上にな
ると、ピストン２の図中右側に作用する油圧がピストン
２の図中左側に作用する油圧よりも高くなるため、ロッ
クアップクラッチが図外の出力軸上を図中左側へ向かっ
てスライドする。その結果、ピストン２が摩擦材2aを介
してコンバータハウジング10に接合される（第２図の状
態）。そして、このロックアップクラッチの接合時、ピ
ストン２とハブ１（出力部材３）は、弾性部材６を押し
縮め、十分な捩り角度をもって相対回動する。このピス
トン２とハブ１の相対回動時、弾性部材６に遠心力が作
用すると、弾性部材６は保持部８に押しつけられる。し
かし、保持部８は、弾性部材６の輪郭に合わせて円弧状
に成形してあるため、弾性部材６との接触面積が広く、
両者間の接触面圧が従来例よりも格段に低くなる。従っ
て、弾性部材６の摩耗が低減されるとともに、ピストン
２とハブ１とが円滑に相対回動する。これによって、ロ
ックアップクラッチの接合時における捩り振動が、弾性
部材６により効果的に吸振され、動力伝達系の振動，異
音等の発生が抑制される。According to the structure of the embodiment described above, when the vehicle speed exceeds a certain speed, the hydraulic pressure acting on the right side of the piston 2 in the drawing becomes higher than the hydraulic pressure acting on the left side of the piston 2 in the drawing. On the output shaft of FIG. As a result, the piston 2 is joined to the converter housing 10 via the friction material 2a (the state shown in FIG. 2). When the lock-up clutch is engaged, the piston 2 and the hub 1 (the output member 3) press and shrink the elastic member 6 and relatively rotate with a sufficient torsion angle. When a centrifugal force acts on the elastic member 6 during the relative rotation between the piston 2 and the hub 1, the elastic member 6 is pressed against the holding portion 8. However, since the holding portion 8 is formed in an arc shape in accordance with the contour of the elastic member 6, the contact area with the elastic member 6 is large,
The contact surface pressure between the two is much lower than in the prior art. Accordingly, the wear of the elastic member 6 is reduced, and the piston 2 and the hub 1 rotate relatively smoothly. Thereby, the torsional vibration at the time of the engagement of the lock-up clutch is effectively absorbed by the elastic member 6, and the vibration of the power transmission system, the generation of abnormal noise, and the like are suppressed.
尚、弾性部材６としては、第１図〜第２図に示したコ
イルスプリングに限られず、ばね作用を発揮するゴム状
弾性体等の種々の部材が使用条件に応じて選択される。The elastic member 6 is not limited to the coil springs shown in FIGS. 1 and 2, and various members such as a rubber-like elastic body which exerts a spring action are selected according to the use conditions.
考案の効果 以上述べたように本考案のロックアップクラッチは、
トルクコンバータの入力部に接合するピストンに、弾性
部材の外周側に位置し、かつ、その弾性部材の輪郭に合
わせ成形した保持部を備えてなるため、ピストンとハブ
との相対回動時に、弾性部材に遠心力が作用しても、弾
性部材が広い接触面積でもって保持部に接触する。従っ
て、弾性部材と保持部との接触面圧が低く、弾性部材の
摩耗を低減することができ、長期に亘り円滑な動力伝達
が可能となる。またフランジ部の軸方向の略中央の一部
を凹ませて、弾性部材の保持部および係合面を形成し、
フランジ部のタービン側には係合面を周方向に連結する
フランジ端部を設けたので、このフランジ端部によっ
て、フランジ部を補強することができる。Effect of the invention As described above, the lock-up clutch of the invention is
Since the piston joined to the input part of the torque converter is provided with a holding part located on the outer peripheral side of the elastic member and formed in accordance with the contour of the elastic member, the elasticity is increased when the piston and the hub are relatively rotated. Even if a centrifugal force acts on the member, the elastic member contacts the holding portion with a large contact area. Therefore, the contact surface pressure between the elastic member and the holding portion is low, the wear of the elastic member can be reduced, and smooth power transmission can be performed for a long time. In addition, a part of the substantially central portion of the flange portion in the axial direction is recessed to form a holding portion and an engagement surface of the elastic member,
Since a flange end is provided on the turbine side of the flange to connect the engaging surfaces in the circumferential direction, the flange can be reinforced by the flange end.
第１図は本考案の実施例であるロックアップクラッチの
一部を切り欠いて示す背面図、第２図は第１図のII−II
線に沿う断面図である。 １……ハブ、２……ピストン、３……出力部材、４……
フランジ部、4a……環状のフランジ端部、６……弾性部
材、８……保持部、11……係合面。FIG. 1 is a rear view showing a lock-up clutch according to an embodiment of the present invention with a part cut away, and FIG. 2 is a II-II of FIG.
It is sectional drawing which follows a line. 1 ... hub, 2 ... piston, 3 ... output member, 4 ...
Flange section, 4a ... annular flange end section, 6 ... elastic member, 8 ... holding section, 11 ... engagement surface.
Claims (1)
トンとハブに固定した出力材とを複数の弾性部材で相対
回動可能に連繋したトルクコンバータのロックアップク
ラッチにおいて、 前記ピストンの外周端に、前記弾性部材の外周側に位置
する環状のフランジ部を設け、 前記フランジ部の軸方向略中央部の内周面を凹ませるこ
とにより、前記弾性部材の長さと略同じ長さで、かつ前
記弾性部材の輪郭と略同じ曲率の輪郭で、かつ前記弾性
部材の外周側を覆っている断面円弧状の保持部を形成
し、該保持部の周方向の両端面を前記弾性部材の長さ方
向の端部に係合する係合面とすると共に、フランジ部の
タービン側に、前記係合面を周方向に連結する環状のフ
ランジ端部を設けたことを特徴とするトルクコンバータ
のロックアップクラッチ。1. A torque converter lock-up clutch in which a piston joined to an input portion of a torque converter and an output member fixed to a hub are connected to each other by a plurality of elastic members so as to be relatively rotatable. By providing an annular flange portion located on the outer peripheral side of the elastic member, by recessing an inner peripheral surface of a substantially central portion in the axial direction of the flange portion, the elastic member has a length substantially equal to the length of the elastic member, and A holding portion having an arc-shaped cross section that has a contour having substantially the same curvature as the contour of the member and covers the outer peripheral side of the elastic member is formed. A lock-up clutch for a torque converter, comprising: an engagement surface that engages with an end portion; and an annular flange end portion that circumferentially connects the engagement surface to the turbine side of the flange portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989105158U JP2580139Y2 (en) | 1989-09-07 | 1989-09-07 | Lockup clutch for torque converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989105158U JP2580139Y2 (en) | 1989-09-07 | 1989-09-07 | Lockup clutch for torque converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0344257U JPH0344257U (en) | 1991-04-24 |
| JP2580139Y2 true JP2580139Y2 (en) | 1998-09-03 |
Family
ID=31653928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989105158U Expired - Lifetime JP2580139Y2 (en) | 1989-09-07 | 1989-09-07 | Lockup clutch for torque converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2580139Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0624604Y2 (en) * | 1987-02-16 | 1994-06-29 | 株式会社大金製作所 | Lockup damper for torque converter |
-
1989
- 1989-09-07 JP JP1989105158U patent/JP2580139Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0344257U (en) | 1991-04-24 |
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