JP2002156021A - Friction plate - Google Patents
Friction plateInfo
- Publication number
- JP2002156021A JP2002156021A JP2000350948A JP2000350948A JP2002156021A JP 2002156021 A JP2002156021 A JP 2002156021A JP 2000350948 A JP2000350948 A JP 2000350948A JP 2000350948 A JP2000350948 A JP 2000350948A JP 2002156021 A JP2002156021 A JP 2002156021A
- Authority
- JP
- Japan
- Prior art keywords
- friction
- friction plate
- plate
- oil
- fastening mechanism
- 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.)
- Granted
Links
Classifications
-
- 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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/60—Clutching elements
- F16D13/64—Clutch-plates; Clutch-lamellae
- F16D13/648—Clutch-plates; Clutch-lamellae for clutches with multiple lamellae
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、完全に油中に浸っ
た状態で用いられる締結機構用の摩擦板に関し、特にト
ルクコンバータのロックアップ機構に用いられる摩擦板
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction plate for a fastening mechanism used completely immersed in oil, and more particularly to a friction plate used for a lock-up mechanism of a torque converter.
【０００２】[0002]
【従来の技術】トルクコンバータとしては、例えば特開
平１１−７２１５６号公報に示すものが知られている。
このトルクコンバータは、エンジン出力が伝達されるコ
ンバータ殻とタービン羽根車との間に軸線方向ピストン
（ロックアップピストン）が配置されており、該軸線方
向ピストンはコンバータ殻の回転軸に軸方向に変位可能
に且つコンバータ殻と一体回転可能に外嵌されている。2. Description of the Related Art As a torque converter, for example, a torque converter disclosed in Japanese Patent Application Laid-Open No. 11-72156 is known.
In this torque converter, an axial piston (lock-up piston) is disposed between a converter shell through which engine output is transmitted and a turbine impeller, and the axial piston is displaced in an axial direction by a rotation axis of the converter shell. As much as possible and integrally rotatable with the converter shell.
【０００３】軸線方向ピストンとタービン羽根車との間
には、コンバータ殻の回転（エンジン出力）をタービン
羽根車に伝達する締結機構（ロックアップ機構）が配設
されている。この締結機構は、コンバータ殻と一体に回
転する円形状の外側摩擦板と、タービン羽根車と一体に
回転する円形状の内側摩擦板とを備えており、外側摩擦
板及び内側摩擦板は共に軸方向に移動可能に複数枚配置
されて互いに隣り合う各外側摩擦板の間に内側摩擦板が
配置されている。[0003] A fastening mechanism (lock-up mechanism) for transmitting rotation of the converter shell (engine output) to the turbine impeller is disposed between the axial piston and the turbine impeller. This fastening mechanism includes a circular outer friction plate that rotates integrally with the converter shell, and a circular inner friction plate that rotates integrally with the turbine impeller. A plurality of inner friction plates are disposed between the outer friction plates adjacent to each other so as to be movable in a plurality of directions.
【０００４】そして、軸線方向ピストンのコンバータ殻
側に油圧を負荷すると、該軸線方向ピストンがタービン
羽根車側に移動して外側摩擦板を該タービン羽根車側に
押しつけ、これにより、互いに隣り合う各外側摩擦板間
に内側摩擦板が挟まれて締結状態（ロックアップ状態）
とされ、このときの摩擦力によりコンバータ殻のトルク
が締結機構及びタービン羽根車等を介して変速機構の入
力軸に伝達される。[0004] When hydraulic pressure is applied to the converter shell side of the axial piston, the axial piston moves to the turbine impeller side and presses the outer friction plate against the turbine impeller side. Fastened state with the inner friction plate sandwiched between the outer friction plates (lockup state)
The torque of the converter shell is transmitted to the input shaft of the speed change mechanism via the fastening mechanism, the turbine impeller, and the like by the frictional force at this time.
【０００５】逆に、軸線方向ピストンのタービン羽根車
側に油圧を負荷すると、軸線方向ピストンがコンバータ
殻側に移動して締結機構の締結が開放される。ところ
で、トルクコンバータの締結機構は完全に油中に浸され
た状態で用いられ、また、所謂スリップロックアップ制
御を行うため、締結機構の内側摩擦板又は外側摩擦板と
しては、図４に示すように、円環板状のベースプレート
ａの少なくとも一方の面（図では両面）に周方向に所定
の間隔を存して複数の摩擦材ｂを設けたものが用いら
れ、互いに隣り合う各摩擦材ｂの間の溝ｃから外側摩擦
板と内側摩擦板との接触面（摩擦面）に油を導いて油膜
を形成するようにしている。摩擦材ｂは、通常、プレス
成形による打ち抜き加工によってコマ状に形成されたも
のが用いられ、ベースプレートａに貼り付け等により固
着されるようになっている。Conversely, when hydraulic pressure is applied to the turbine piston wheel side of the axial piston, the axial piston moves to the converter shell side and the fastening mechanism is released. By the way, the fastening mechanism of the torque converter is used in a state of being completely immersed in oil, and in order to perform so-called slip lock-up control, the inner friction plate or the outer friction plate of the fastening mechanism is as shown in FIG. A plurality of friction members b provided at predetermined intervals in the circumferential direction on at least one surface (both surfaces in the figure) of an annular base plate a, and each of the friction members b adjacent to each other is used. The oil is guided from the groove c between the contact surfaces (friction surface) between the outer friction plate and the inner friction plate to form an oil film. The friction material b is usually formed in a frame shape by punching by press molding, and is fixed to the base plate a by sticking or the like.
【０００６】[0006]
【発明が解決しようとする課題】トルクコンバータの締
結機構は、完全に油中に浸された状態で使用されるた
め、開放されている際に、トルクコンバータ内では常に
油圧がかかった状態にあることや、コンバータ殻側とタ
ービン羽根車側との回転角速度差等に起因して外側摩擦
板及び内側摩擦板に対して極低面圧で接触しようする力
が働き、該接触による摩擦によって所謂ドラッグトルク
（引きずりトルク）が発生する。Since the fastening mechanism of the torque converter is used in a state where it is completely immersed in oil, when it is opened, the hydraulic pressure is always applied in the torque converter. In addition, a force that comes into contact with the outer friction plate and the inner friction plate at an extremely low surface pressure due to the rotational angular velocity difference between the converter shell side and the turbine impeller side, and so-called drag is caused by the friction due to the contact. Torque (dragging torque) is generated.
【０００７】この場合、例えば内側摩擦板の両面に摩擦
材ｂが固着されているとすると、該摩擦材ｂと相手材で
ある外側摩擦板との間に油膜が形成されていれば、ドラ
ッグトルクも安定してその値もある程度小さなものとな
り、燃費の増加や摩擦材の耐久性低下といった不具合を
回避することができる。ここで、本発明者等は実際に安
定したドラッグトルクが得られているかどうかを見極め
るべく、摩擦板について詳細に分析したところ、ベース
プレートａに固着される摩擦材ｂがプレス成形による打
ち抜き加工によって形成されているため、該打ち抜き時
に摩擦材ｂの周方向の両側角部ｄにエッジ部が形成され
てしまい、該エッジ部によって油膜がかきとられて締結
機構の開放状態で安定したドラッグトルクが得られてい
ないことが判明した。In this case, for example, assuming that the friction material b is fixed to both surfaces of the inner friction plate, if an oil film is formed between the friction material b and the outer friction plate which is the mating material, the drag torque is increased. The value is also small to some extent stably, and problems such as an increase in fuel efficiency and a decrease in durability of the friction material can be avoided. Here, the present inventors analyzed the friction plate in detail to determine whether or not a stable drag torque was actually obtained. As a result, the friction material b fixed to the base plate a was formed by punching by press molding. As a result, edges are formed at both side corners d in the circumferential direction of the friction material b during the punching, and the oil film is scraped off by the edges to obtain a stable drag torque when the fastening mechanism is opened. Turned out not to be.
【０００８】本発明はこのような技術的背景に鑑みてな
されたものであり、完全に油中で使用される締結機構の
開放状態で安定したドラッグトルクが得られるようにし
て燃費の低減及び摩擦材の耐久性の向上を図ることがで
きる摩擦板を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned technical background, and it is possible to obtain a stable drag torque in a fully opened state of a fastening mechanism used in oil, thereby reducing fuel consumption and reducing friction. It is an object of the present invention to provide a friction plate capable of improving the durability of a material.
【０００９】[0009]
【課題を解決するための手段】かかる目的を達成するた
めに、本発明に係る摩擦板は、円環板状のベースプレー
トと、該ベースプレートの少なくとも一方の面に周方向
に所定の間隔を存して複数固着された摩擦材とを備え、
完全に油中に浸った状態で用いられる締結機構用の摩擦
板であって、前記摩擦材の周方向の両側に段差部を設け
たことを特徴とする。In order to achieve the above object, a friction plate according to the present invention has an annular base plate and at least one surface of the base plate at a predetermined circumferential distance. And a plurality of friction materials fixed to each other,
A friction plate for a fastening mechanism used in a state of being completely immersed in oil, wherein step portions are provided on both sides in a circumferential direction of the friction material.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態の一例
を図を参照して説明する。図１は本発明の実施の形態の
一例である摩擦板の平面図、図２は図１のＡ−Ａ線断面
図、図３は従来例及び本発明例における相対回転数とド
ラッグトルクとの関係を示すグラフ図である。なお、こ
の実施の形態では、本発明に係る摩擦板を従来例で説明
したトルクコンバータの締結機構の内側摩擦板に適用し
た場合を例に採る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a friction plate according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. It is a graph which shows a relationship. In this embodiment, an example is described in which the friction plate according to the present invention is applied to an inner friction plate of a fastening mechanism of a torque converter described in the conventional example.
【００１１】図１及び図２を参照して、この内側摩擦板
１は、内周部に係合用のスプライン溝２ａを有する円環
板状のベースプレート２と、該ベースプレート２の両面
にそれぞれ周方向に所定の間隔を存して複数固着された
摩擦材３とを備えており、互いに隣り合う各摩擦材３の
間の溝４から外側摩擦板（図示せず。）と内側摩擦板１
との接触面（摩擦面）に油を導いて油膜を形成するよう
にしている。なお、溝４の配置（摩擦材３の配置）はベ
ースプレート２の両面で異なっていても良い。Referring to FIGS. 1 and 2, the inner friction plate 1 has an annular base plate 2 having a spline groove 2a for engagement on an inner peripheral portion thereof, and a circumferential plate on both surfaces of the base plate 2, respectively. And a plurality of friction members 3 fixed at predetermined intervals, and an outer friction plate (not shown) and an inner friction plate 1 are formed from grooves 4 between the friction members 3 adjacent to each other.
The oil is guided to the contact surface (friction surface) with the oil to form an oil film. The arrangement of the grooves 4 (the arrangement of the friction material 3) may be different on both surfaces of the base plate 2.
【００１２】ここで、この実施の形態では、摩擦材３を
プレス成形による打ち抜き加工によってコマ状に形成す
ると共に、圧縮成形により全ての摩擦材３の周方向の両
側に微小な段差部５を形成し、これをベースプレート２
の両面に貼り付け等により固着している。このように摩
擦材３の周方向の両側に圧縮成形によって段差部５を形
成することにより、該摩擦材３の外側摩擦板との接触部
分の周方向の両側角部３ａ及び段差部５の角部５ａをＲ
状とすることができ、打ち抜き加工によるエッジ部をな
くすことができる。In this embodiment, the friction material 3 is formed in a frame shape by punching by press molding, and minute step portions 5 are formed on both circumferential sides of all the friction materials 3 by compression molding. And this is the base plate 2
Are fixed to both sides by sticking or the like. By forming the step portions 5 on both sides in the circumferential direction of the friction material 3 by compression molding in this way, the corner portions 3a in the circumferential direction of the contact portion of the friction material 3 with the outer friction plate and the corners of the step portion 5 are formed. Part 5a is R
It is possible to eliminate the edge portion due to the punching process.
【００１３】これにより、内側摩擦板１及び外側摩擦板
が完全に油中に浸された状態で締結が開放されて内側摩
擦板１の摩擦材３と外側摩擦板とが極低面圧で接触した
際に、従来のようなエッジ部による油膜のかきとりが回
避されて内側摩擦板１の摩擦材３と相手材である外側摩
擦板との間に十分な油膜が形成され、この結果、ドラッ
グトルクが油の剪断に必要なトルクだけとなって該ドラ
ッグトルクが安定且つ小さなものとなり、燃費の低減及
び摩擦材３の耐久性の向上を図ることができる。Thus, the fastening is released in a state where the inner friction plate 1 and the outer friction plate are completely immersed in the oil, and the friction material 3 of the inner friction plate 1 and the outer friction plate come into contact with each other at an extremely low surface pressure. In this case, the oil film is prevented from being scraped off by the edge portion as in the related art, and a sufficient oil film is formed between the friction material 3 of the inner friction plate 1 and the outer friction plate which is a mating member. However, the drag torque is stable and small because only the torque necessary for shearing the oil is obtained, so that the fuel consumption can be reduced and the durability of the friction material 3 can be improved.
【００１４】図３に、本発明の内側摩擦板１を用いてト
ルクコンバータの締結機構を構成した場合を本発明例と
し、従来の内側摩擦板（段差部なし）を用いてトルクコ
ンバータの締結機構を構成した場合を従来例として、両
者の相対回転数とドラッグトルクとの関係を比較した試
験結果を示す。なお、本発明の内側摩擦板に段差部５を
設けた以外は本発明例及び従来例共に同一条件として試
験を行った。FIG. 3 shows an example of the present invention in which a fastening mechanism of a torque converter is formed by using the inner friction plate 1 of the present invention, and a fastening mechanism of a torque converter using a conventional inner friction plate (without a step). The results of a test comparing the relationship between the relative rotational speeds of the two and the drag torque are shown below, taking the case of the configuration as a conventional example. The test was performed under the same conditions in both the present invention example and the conventional example except that the stepped portion 5 was provided on the inner friction plate of the present invention.
【００１５】図３から明らかなように、内側摩擦板１に
段差部５を設けた本発明例は従来例に比べて、ドラッグ
トルクが小さく、且つ、トルクのばらつきも小さく安定
したトルクが得られるのが判る。なお、上記実施の形態
では、加工の容易性を優先すべく圧縮成形により段差部
５を形成した場合を例に採ったが、これに限定されず、
切削加工により段差部５を形成して打ち抜きによるエッ
ジ部をなくすようにしてもよい。As is apparent from FIG. 3, in the embodiment of the present invention in which the stepped portion 5 is provided on the inner friction plate 1, a stable torque can be obtained with a smaller drag torque and less variation in torque than the conventional example. I understand. In the above embodiment, the case where the step portion 5 is formed by compression molding in order to give priority to ease of processing is taken as an example, but the present invention is not limited to this.
The step portion 5 may be formed by cutting to eliminate the edge portion by punching.
【００１６】また、上記実施の形態では、内側摩擦板１
に摩擦材３を設けた場合を例に採ったが、外側摩擦板に
摩擦板を設けるようにしてもよく、この場合、相手材の
接触面に対応してベースプレート２の一方の面のみに摩
擦材３を設けるようにしてもよい。更に、上記実施の形
態では、プレス成形による打ち抜き加工によってコマ状
に形成した後、圧縮成形により全ての摩擦材３の周方向
の両側に段差部５を形成し、これをベースプレート２の
両面に固着しているが、これに代えて、摩擦材３をプレ
ス成形による打ち抜き加工によってコマ状に形成してこ
れをベースプレート２の両面に固着した後、圧縮成形に
より全ての摩擦材３の周方向の両側に微小な段差部５を
形成するようにしてもよい。In the above embodiment, the inner friction plate 1
Although the case where the friction material 3 is provided is taken as an example, a friction plate may be provided on the outer friction plate. In this case, only one surface of the base plate 2 corresponds to the contact surface of the mating material. The material 3 may be provided. Furthermore, in the above-described embodiment, after forming into a top shape by punching by press molding, step portions 5 are formed on both sides in the circumferential direction of all the friction materials 3 by compression molding, and these are fixed to both surfaces of the base plate 2. Instead of this, the friction material 3 is formed into a piece shape by punching by press molding and fixed to both surfaces of the base plate 2, and then both sides of all the friction materials 3 in the circumferential direction are compression-molded. Alternatively, a minute step 5 may be formed on the substrate.
【００１７】更に、上記実施の形態では、段差部５の形
状を平坦面としているが、これに限定されず、打ち抜き
加工によるエッジ部をなくすことができる限りにおい
て、適宜変更可能である。Further, in the above-described embodiment, the shape of the step portion 5 is a flat surface. However, the shape is not limited to this, and can be changed as appropriate as long as the edge portion by punching can be eliminated.
【００１８】[0018]
【発明の効果】上記の説明から明らかなように、本発明
によれば、完全に油中で使用される締結機構の開放状態
で安定したドラッグトルクを得ることができるので、燃
費の低減及び摩擦材の耐久性の向上を図ることができる
という効果が得られる。As is apparent from the above description, according to the present invention, a stable drag torque can be obtained in the open state of the fastening mechanism used completely in oil, so that fuel consumption is reduced and friction is reduced. The effect is obtained that the durability of the material can be improved.
【図１】本発明の実施の形態の一例である摩擦板の平面
図である。FIG. 1 is a plan view of a friction plate according to an embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】従来例及び本発明例における相対回転数とドラ
ッグトルクとの関係を示すグラフ図である。FIG. 3 is a graph showing a relationship between a relative rotation speed and a drag torque in a conventional example and an example of the present invention.
【図４】従来の摩擦板を説明するための説明的断面図で
ある。FIG. 4 is an explanatory sectional view for explaining a conventional friction plate.
１…摩擦板 ２…ベースプレート ３…摩擦材 ４…溝 ５…段差部 REFERENCE SIGNS LIST 1 friction plate 2 base plate 3 friction material 4 groove 5 step portion
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 幸彦 静岡県袋井市愛野2345番地 エヌエスケ ー・ワーナー株式会社内 Ｆターム(参考） 3J058 BA46 BA76 CB20 CB29 FA29 GA93 GA94 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yukihiko Ito 2345 Aino, Fukuroi-shi, Shizuoka NSK Warner Co., Ltd. F-term (reference) 3J058 BA46 BA76 CB20 CB29 FA29 GA93 GA94
Claims (1)
プレートの少なくとも一方の面に周方向に所定の間隔を
存して複数固着された摩擦材とを備え、完全に油中に浸
った状態で用いられる締結機構用の摩擦板であって、 前記摩擦材の周方向の両側に段差部を設けたことを特徴
とする摩擦板。1. An annular base plate, and a plurality of friction members fixed on at least one surface of the base plate at predetermined intervals in a circumferential direction, and are completely immersed in oil. A friction plate for a fastening mechanism to be used, wherein step portions are provided on both sides in a circumferential direction of the friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000350948A JP4011281B2 (en) | 2000-11-17 | 2000-11-17 | Friction plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000350948A JP4011281B2 (en) | 2000-11-17 | 2000-11-17 | Friction plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002156021A true JP2002156021A (en) | 2002-05-31 |
| JP4011281B2 JP4011281B2 (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000350948A Expired - Lifetime JP4011281B2 (en) | 2000-11-17 | 2000-11-17 | Friction plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5414803B2 (en) * | 2009-09-15 | 2014-02-12 | アイシン化工株式会社 | Segment type friction material |
| DE112017000367T5 (en) | 2016-03-15 | 2018-10-04 | Aisin Aw Co., Ltd. | Friction plate and hydraulic transmission device |
-
2000
- 2000-11-17 JP JP2000350948A patent/JP4011281B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5414803B2 (en) * | 2009-09-15 | 2014-02-12 | アイシン化工株式会社 | Segment type friction material |
| DE112017000367T5 (en) | 2016-03-15 | 2018-10-04 | Aisin Aw Co., Ltd. | Friction plate and hydraulic transmission device |
| US10724581B2 (en) | 2016-03-15 | 2020-07-28 | Aisin Aw Co., Ltd. | Friction plate and hydraulic transmission apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4011281B2 (en) | 2007-11-21 |
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