JPH0144930B2 - - Google Patents
Info
- Publication number
- JPH0144930B2 JPH0144930B2 JP56083093A JP8309381A JPH0144930B2 JP H0144930 B2 JPH0144930 B2 JP H0144930B2 JP 56083093 A JP56083093 A JP 56083093A JP 8309381 A JP8309381 A JP 8309381A JP H0144930 B2 JPH0144930 B2 JP H0144930B2
- Authority
- JP
- Japan
- Prior art keywords
- annular
- plate
- piston
- annular plate
- seal
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 31
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000003825 pressing Methods 0.000 abstract description 8
- 238000004873 anchoring Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、自動変速機の歯車変速装置において
用いられる多板式係合装置を駆動する油圧サーボ
のピストンに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a piston of a hydraulic servo that drives a multi-plate engagement device used in a gear transmission of an automatic transmission.
［従来の技術］
自動変速機の歯車変速装置における油圧サーボ
には、内周及び外周に設けられた周状間〓にオイ
ルシールが装着された環状板形状を有し、外周部
側面の所定の位置に多板式係合装置を押圧する平
坦な環状平面が形成されたピストンが用いられて
いる。[Prior Art] A hydraulic servo in a gear transmission of an automatic transmission has an annular plate shape in which oil seals are installed between the circumferences provided on the inner and outer peripheries, and a predetermined seal on the side surface of the outer periphery is used. A piston is used which is formed with a flat annular surface which presses the multi-plate engagement device into position.
従来よりこのようなピストンはアルミニウム材
の荒い鋳造物より機械加工によつて形成されてお
り、コスト高であるという欠点を有していた。 Conventionally, such pistons have been formed by machining from rough castings of aluminum material, and have had the disadvantage of high cost.
上記の機械加工によるピストンの製造コストを
改善するために、板金製の環状板を用いたピスト
ンが特開昭49−68159号公報に提案されている。 In order to improve the manufacturing cost of the piston by the above-mentioned machining, a piston using an annular plate made of sheet metal has been proposed in Japanese Patent Laid-Open No. 49-68159.
この板金製ピストン、環状板の外周部および内
周部のリム部近傍を屈曲せしめて支持円筒面を形
成し、該支持円筒面に断面Ｌ字形の保持板を装着
することによつてリム部と保持板との間にオイル
シールを装着する周状間〓を形成することによ
り、環状板の形状を簡略化せしめ、環状板を板金
より容易に形成することを可能にしたものであ
る。 In this sheet metal piston, the outer and inner circumferential parts of the annular plate are bent near the rim to form a supporting cylindrical surface, and a retaining plate having an L-shaped cross section is attached to the supporting cylindrical surface to form a rim part. By forming a circumferential gap between the holding plate and the oil seal, the shape of the annular plate is simplified and the annular plate can be formed more easily than from sheet metal.
［発明が解決しようとする問題点］
上記板金製ピストンによれば、機械加工のピス
トンに比してピストンの製造コストを改善するこ
とが可能であるが、環状板の外周部のリム部近傍
に保持板を装着するための支持円筒面を形成する
必要性から、環状板の外周部が多板式係合装置を
押圧するには不適切な段付形状となつてしまうと
いう欠点を有する。このため上記板金製ピストン
では、環状板より一体または別体に形成されたピ
ストンの余裕ストローク量に応じた軸方向長さを
有する円筒状の接触手段を突出せしめて、該接触
手段の端面によつて多板式係合装置を押圧するよ
うに構成されている。[Problems to be Solved by the Invention] According to the above-mentioned sheet metal piston, it is possible to improve the manufacturing cost of the piston compared to a machined piston. Due to the necessity of forming a supporting cylindrical surface for attaching the retaining plate, the outer periphery of the annular plate has a disadvantage that it becomes a stepped shape which is inappropriate for pressing the multi-plate engagement device. For this reason, in the above-mentioned sheet metal piston, a cylindrical contact means, which is integrally or separately formed from the annular plate and has an axial length corresponding to the extra stroke of the piston, is made to protrude, and the end face of the contact means is The multi-plate engagement device is configured to be pressed against the multi-plate engagement device.
しかし円筒状の接触手段により多板式係合装置
を押圧する構造では多板式係合装置との接触面積
が上記機械加工ピストンに比して低下し、円筒状
の接触手段のわずか端面によつて多板式係合装置
を押圧するために、多板式係合装置に均等な加圧
力を付与するとが困難となり、多板式係合装置の
耐久性の低下が生じやすい。 However, in a structure in which the multi-plate type engagement device is pressed by a cylindrical contact means, the contact area with the multi-plate type engagement device is reduced compared to the above-mentioned machined piston. In order to press the plate type engagement device, it becomes difficult to apply a uniform pressing force to the multi-plate type engagement device, and the durability of the multi-plate type engagement device is likely to decrease.
本発明は上記の問題点に鑑みて成されたもので
あり、多板式係合装置に均等な加圧力を付与する
ための広い環状平面を備え、しかも板金より形成
可能な簡略化された形状を有することによつて低
コストで製造することが可能な自動変速機のピス
トンを提供することを目的とする。 The present invention has been made in view of the above problems, and provides a multi-plate engagement device with a wide annular plane for applying uniform pressing force, and has a simplified shape that can be formed from sheet metal. It is an object of the present invention to provide a piston for an automatic transmission that can be manufactured at low cost by having the following.
［問題点を解決するための手段］
本発明の自動変速機のピストンは、環状板２
と、該環状板の内周部および外周部にそれぞれ装
着されて前記環状板との間にそれぞれ内側周状間
〓２５Ｂおよび外側周状間〓２５を形成する内周
側シール保持板４および外周側シール保持板３
と、前記内側周状間〓および外側周状間〓にそれ
ぞれ装着される内周側オイルシール７および外周
側オイルシール６とを備え、シリンダとの間に供
給される油圧によつて歯車変速装置の多板式係合
装置を駆動する自動変速機のピストン１におい
て、前記環状板２はその外周端２１１により半径
方向内方に延びる環状平板部２６と、該環状平板
部の半径方向内方に設けられて支持用円筒面２２
１を形成する肩部２７Ａとを有し、前記外周側シ
ール保持板３は前記支持用円筒面２２１嵌合可能
な内側円筒部３２と、前記環状板の外周端の外径
よりやや小さに外径を有する外側円筒部３３と、
前記環状板の外周端の外径とほぼ等しい外径を有
するフランジ部３１とを有し、前記内側円筒部３
２を支持用円筒面２２１に嵌合することによつて
前記外周側シール保持板３を前記環状板２に装着
して前記環状平板部２６と前記フランジ部３１と
の間に前記外側周状間〓２５を形成し、該外側周
状間〓２５内に前記外周側オイルシール６と前記
環状板２との間に位置するようにバツクアツプリ
ング５を配設したことを特徴とする。[Means for solving the problems] The piston of the automatic transmission of the present invention has an annular plate 2
and an inner seal retaining plate 4 and an outer periphery which are attached to the inner and outer peripheral parts of the annular plate and form an inner circumferential gap 25B and an outer circumferential gap 25 between the annular plate and the annular plate, respectively. Side seal retainer plate 3
and an inner circumferential oil seal 7 and an outer circumferential oil seal 6 installed between the inner circumferential space and the outer circumferential space, respectively. In the piston 1 of an automatic transmission that drives a multi-plate engagement device, the annular plate 2 has an annular flat plate portion 26 extending radially inward from its outer peripheral end 211, and an annular flat plate portion 26 provided radially inwardly of the annular flat plate portion. Supporting cylindrical surface 22
The outer peripheral side seal retaining plate 3 has an inner cylindrical part 32 that can fit into the supporting cylindrical surface 221, and a shoulder part 27A forming a shoulder part 27A forming a shoulder part 27A forming an outer peripheral edge of the annular plate. an outer cylindrical portion 33 having a diameter;
The inner cylindrical portion 3 has a flange portion 31 having an outer diameter approximately equal to the outer diameter of the outer peripheral end of the annular plate.
2 to the supporting cylindrical surface 221, the outer peripheral side seal retaining plate 3 is attached to the annular plate 2, and the outer circumferential gap is formed between the annular flat plate part 26 and the flange part 31. 25, and a backup spring 5 is disposed within the outer circumferential space 25 so as to be located between the outer oil seal 6 and the annular plate 2.
［作用及び発明の効果］
本発明の自動変速機のピストンは、外周側シー
ル保持板３が環状板２の支持用円筒面２２１に嵌
合可能な内側円筒３２と、環状板２の外周端の外
径よりやや小さい外径を有する外側円筒部３３
と、環状板の外周端の外径とほぼ等しい外径を有
するフランジ部３１とを有しているので、前記内
側円筒部３２を環状板２に設けられた支持用円筒
面２２１に嵌合することによつて前記外周側シー
ル保持板３の前記環状板２に装着し、前記環状平
板部２６と前記フランジ部３１との間に前記外側
円筒部３３の外径寸法の外側周状間〓２５が形成
される。よつて環状板２の外周端２１１より半径
方向内方に延びる環状平板部２６の環状平面２１
の大きさを、多板式係合装置の大きさにあわせて
環状板２の肩部２７Ａの位置を設定し、外周側シ
ール保持板３の内側円筒部３２の内径を肩部２７
Ａの支持用円筒面２２１に嵌合するように調整す
ることによつて適宜選択することができると共
に、環状平板部２６の軸方向位置を、バツクアツ
プリング５の厚さを適宜変更することにより必要
な余裕ストローク量に応じて調節できるので、多
板式係合装置を環状板２の外周部側面に設けられ
た広い環状平面２１で均等に押圧して係合せしめ
ることができる。[Operation and Effects of the Invention] The automatic transmission piston of the present invention has an inner cylinder 32 in which the outer seal retaining plate 3 can fit into the supporting cylindrical surface 221 of the annular plate 2, and an outer peripheral end of the annular plate 2. Outer cylindrical portion 33 having an outer diameter slightly smaller than the outer diameter
and a flange portion 31 having an outer diameter approximately equal to the outer diameter of the outer peripheral end of the annular plate, so that the inner cylindrical portion 32 is fitted into the supporting cylindrical surface 221 provided on the annular plate 2. The outer circumferential side seal retaining plate 3 may be attached to the annular plate 2, and between the annular flat plate part 26 and the flange part 31 there is an outer circumferential gap 25 of the outer diameter dimension of the outer cylindrical part 33. is formed. Therefore, the annular plane 21 of the annular flat plate portion 26 extends radially inward from the outer peripheral end 211 of the annular plate 2.
The size of the shoulder portion 27A of the annular plate 2 is set according to the size of the multi-plate engagement device, and the inner diameter of the inner cylindrical portion 32 of the outer seal retaining plate 3 is set to the shoulder portion 27A.
It can be selected as appropriate by adjusting it to fit into the support cylindrical surface 221 of A, and by changing the axial position of the annular flat plate part 26 and the thickness of the back-up spring 5 as appropriate. Since it can be adjusted according to the necessary margin stroke amount, the multi-plate engagement device can be evenly pressed and engaged with the wide annular plane 21 provided on the side surface of the outer peripheral part of the annular plate 2.
また本発明の自動変速機のピストンにおいて、
環状板２はその外周端より半径方向内方に延びる
環状平板部２６と、該環状平板部２６の半径方向
内方に設けられて支持用円筒面２２１を形成する
肩部２７Ａとを有する簡略化された形状であるの
で、薄い板金をプレス成型することによつて低コ
ストで製造することが可能である。 Further, in the automatic transmission piston of the present invention,
The annular plate 2 is simplified and has an annular flat plate portion 26 extending radially inward from the outer peripheral end thereof, and a shoulder portion 27A provided radially inward of the annular flat plate portion 26 and forming a supporting cylindrical surface 221. Since it has a shaped shape, it can be manufactured at low cost by press molding a thin sheet metal.
なおカツコ内の符号は、図面を参照するための
ものであり、何ら構成を限定するものでは無い。 Note that the numbers in brackets are for referring to the drawings and do not limit the configuration in any way.
［実施例］
本発明を図に示す実施例に基き説明する。第１
図は、本発明の第１実施例の自動変速機歯車変速
装置のピストン１を示す。該ピストン１は、環状
板２と、環状板２の外周部に装着されたシール保
持板３と内周部に装着されたシール保持板４と、
バツクアツプリング５と、外側のリツプシール６
と、内側のリツプシール７とからなる。[Example] The present invention will be explained based on an example shown in the drawings. 1st
The figure shows a piston 1 of an automatic transmission gear transmission according to a first embodiment of the present invention. The piston 1 includes an annular plate 2, a seal retaining plate 3 attached to the outer periphery of the annular plate 2, and a seal retaining plate 4 attached to the inner periphery of the annular plate 2.
Backup spring 5 and outer lip seal 6
and an inner lip seal 7.
環状板２は、その外周端部２１１より半径方向
内方に延びる外側環状平板部２６と、内周端部２
１２より半径方向外方に延びる内側環状平板部２
３と、外側環状平板部２６の内周端および内側環
状平板２８の外周端がそれぞれ直角に屈曲されて
形成された肩部２７Ａ，２７Ｂと、該肩部２７
Ａ，２７Ｂ間の環状凹部２２とが板金よりプレス
成型により一体的に形成されてなる。本実施例で
は環状凹部２２には複数の突起２４が一体的に周
設されている。 The annular plate 2 has an outer annular flat plate part 26 extending radially inward from the outer peripheral end part 211, and an inner peripheral end part 2.
an inner annular flat plate portion 2 extending radially outward from 12;
3, shoulder portions 27A and 27B formed by bending the inner peripheral end of the outer annular flat plate portion 26 and the outer peripheral end of the inner annular flat plate 28 at right angles, respectively;
The annular recess 22 between A and 27B is integrally formed from a sheet metal by press molding. In this embodiment, a plurality of protrusions 24 are integrally provided around the annular recess 22 .
同様に板金プレス成型により一体的に形成され
てなる外周側シール保持板３は、環状板２に設け
られた肩部２７Ａの外側支持用円筒面２２１に嵌
合可能な内側円筒部３２と環状板２の外周端部２
２１の外径よりやや小さい外径を有する外側円筒
３３とを有するコの字形断面を持つ環状体に外側
円筒３３の端より半径方向外方に延びて前記環状
板の外周端の外径とほぼ等しい外径を有するフラ
ンジ部３１が設けられた形状を有し、環状板２に
設けられた肩部２７Ａの外側支持用円筒面２２１
に内側円筒部３２を外嵌することによつて環状板
２の外側環状平板部２６の裏側に密着するように
装着されている。 Similarly, the outer seal retaining plate 3, which is integrally formed by sheet metal press molding, includes an inner cylindrical portion 32 that can fit into the outer supporting cylindrical surface 221 of the shoulder portion 27A provided on the annular plate 2, and an annular plate. 2 outer peripheral end 2
An annular body having a U-shaped cross section has an outer cylinder 33 having an outer diameter slightly smaller than the outer diameter of the annular plate 21, and an annular body extending radially outward from the end of the outer cylinder 33 and having an outer diameter approximately equal to the outer diameter of the outer peripheral end of the annular plate. The outer support cylindrical surface 221 of the shoulder portion 27A provided on the annular plate 2 has a shape in which a flange portion 31 having the same outer diameter is provided.
By fitting the inner cylindrical portion 32 outwardly, the annular plate 2 is attached so as to be in close contact with the back side of the outer annular flat plate portion 26.
環状板２の外周端部２１１と外周側シール保持
板３のフランジ部３１によつてこれらの間に周状
に外側円筒部３３の外径寸法の間〓２５が形成さ
れ、この間〓２５内には外周端部２１１側にバツ
クアツプリング５を介在して摺動抵抗の少ないリ
ツプシール６が摺動時においてもねじれることの
ないように挟持されている。 Between the outer peripheral end 211 of the annular plate 2 and the flange 31 of the outer seal holding plate 3, a space 25 is formed between them in the outer diameter of the outer cylindrical part 33, and during this period, inside the outer cylindrical part 33, A lip seal 6 with low sliding resistance is held in place on the outer peripheral end 211 side with a back-up spring 5 interposed therebetween so that it does not twist even when sliding.
内側用のシール保持板４は、環状板２に設けら
れた肩部２７Ｂの内側支持用円筒面２２２に嵌合
可能な環状部４１とその一端から半径方向内方に
伸長して内側環状平板部２３の内径とほぼ等しい
内径を有するフランジ部４２からなるＬ字形断面
を有する環状体であり、環状板２に設けられた肩
部２７Ｂの内側支持用円筒面２２２に上記環状部
４１を内嵌させて装着されている。 The inner seal retaining plate 4 includes an annular portion 41 that can fit into the inner supporting cylindrical surface 222 of the shoulder portion 27B provided on the annular plate 2, and an inner annular flat plate portion extending radially inward from one end of the annular portion 41. It is an annular body having an L-shaped cross section consisting of a flange portion 42 having an inner diameter approximately equal to the inner diameter of the annular plate 2, and the annular portion 41 is fitted inside the inner supporting cylindrical surface 222 of the shoulder portion 27B provided on the annular plate 2. is installed.
環状板２の内側環状平板部２３と内側用のシー
ル保持板４のフランジ部４２によつてこれらの間
に周状に間〓２５Ｂが形成され、この間〓２５Ｂ
内に上記リツプシール７が挟持されている。 A gap 25B is formed circumferentially between the inner annular flat plate part 23 of the annular plate 2 and the flange part 42 of the inner seal holding plate 4, and the gap 25B is
The lip seal 7 is sandwiched therein.
上記ピストン１は外側のリツプシール６と内側
のリツプシール７により摺動自在にかつ油密的に
油圧サーボのシリンダに装着され、シリンダとの
間に構成される油室に供給される油圧により作動
し、外側環状平板部２６の環状平面２１で多板式
係合装置と接触して多板式係合装置に押圧力を与
える。 The piston 1 is slidably and oil-tightly attached to the cylinder of a hydraulic servo by an outer lip seal 6 and an inner lip seal 7, and is operated by hydraulic pressure supplied to an oil chamber formed between the piston 1 and the cylinder. The annular plane 21 of the outer annular flat plate portion 26 contacts the multi-plate engagement device to apply a pressing force to the multi-plate engagement device.
また環状凹部２２に周設された複数個の突起２
４には、油室が排圧されたときにピストン１を解
放位置に移動せしめるためのリターンスプリング
が装着され、突起２４がこれを安定的に保持す
る。 Further, a plurality of protrusions 2 provided around the annular recess 22
4 is equipped with a return spring for moving the piston 1 to the release position when the pressure in the oil chamber is exhausted, and the projection 24 stably holds this.
外側環状平板部２６の環状平面２１の大きさは
多板式係合装置の大きさにあわせて環状板２の肩
部２７Ａの半径方向位置を設定し、外周側シール
保持板３の内側円筒部３２の内径を肩部２７Ａの
外側支持用円筒面２２１に嵌合するように調整す
ることによつて適宜選択され、多板式係合装置に
均等な押圧力を付与するために十分な広さが与え
られる。 The size of the annular plane 21 of the outer annular flat plate part 26 is determined by setting the radial position of the shoulder part 27A of the annular plate 2 in accordance with the size of the multi-plate engagement device, and the inner cylindrical part 32 of the outer seal retaining plate 3 is appropriately selected by adjusting the inner diameter of the shoulder portion 27A so as to fit into the outer supporting cylindrical surface 221 of the shoulder portion 27A, and has a sufficient width to apply an even pressing force to the multi-plate engagement device. It will be done.
リツプシール６と環状板２の間に挟持されるバ
ツクアツプリング５の厚さは、多板式係合装置の
摩擦材の枚数によつて設定され、これにより環状
板２の環状平面２１の位置が要求される余裕スト
ローク量に応じて調節される。 The thickness of the back-up spring 5 held between the lip seal 6 and the annular plate 2 is determined by the number of friction materials in the multi-plate engagement device, and the position of the annular plane 21 of the annular plate 2 is determined by this. It is adjusted according to the amount of extra stroke.
第２図は、本発明にかかる歯車変速装置のピス
トン１Ａ，１Ｂ，１Ｃ，１Ｄを備えた自動変速機
を示す断面図である。トルクコンバータ１０は前
側（エンジン側）が開いたトルクコンバータケー
ス５０内に装着され、歯車変速装置２０は該トル
クコンバータケース５０の後端５０Ａに連結され
たトランスミツシヨンケース６０内に収納されて
いる。トルクコンバータケース５０の後部には中
心に歯車変速装置２０の出力ギア９１を収納する
出力ギアルーム５１が設けられ、その外側にガバ
ナ油圧発生機構１１を収容したガバナルーム５３
が形成されており、トルクコンバータケース５０
の側方には差動装置ルーム５４が形成されてい
る。該出力ギアルーム５１と該差動装置ルーム５
４の間には、出力ギア９１と差動装置３０を連結
する減速機構４０を収納する減速機構ルーム５２
が形成されている。トランスミツシヨンケース６
０の後端はリアカバー６００で蓋閉されその側面
にはオイルポンプ１２が収納されたオイルポンプ
カバー６０１が締結されている。 FIG. 2 is a sectional view showing an automatic transmission equipped with pistons 1A, 1B, 1C, and 1D of the gear transmission according to the present invention. The torque converter 10 is installed in a torque converter case 50 whose front side (engine side) is open, and the gear transmission 20 is housed in a transmission case 60 connected to the rear end 50A of the torque converter case 50. . At the rear of the torque converter case 50, an output gear room 51 that accommodates the output gear 91 of the gear transmission 20 is provided in the center, and a governor room 53 that accommodates the governor hydraulic pressure generating mechanism 11 is provided on the outside thereof.
is formed, and the torque converter case 50
A differential gear room 54 is formed on the side. The output gear room 51 and the differential gear room 5
4, there is a reduction mechanism room 52 that houses the reduction mechanism 40 that connects the output gear 91 and the differential gear 30.
is formed. Transmission case 6
The rear end of the vehicle 0 is closed with a rear cover 600, and an oil pump cover 601 housing an oil pump 12 is fastened to the side surface of the rear cover 600.
トランスミツシヨンケース６０は、中心部に筒
状センタサポート６２が設けられた中間支壁６３
を有し、リアカバー６００の中心部には前記セン
タサポート６２と同軸心を有するリアセンタサポ
ート６４が形成されている。 The transmission case 60 has an intermediate support wall 63 provided with a cylindrical center support 62 in the center.
A rear center support 64 having the same axis as the center support 62 is formed in the center of the rear cover 600.
トルクコンバータケース５０とトランスミツシ
ヨンケース６０の中心に、前部でフロントカバー
１３を介してエンジン出力軸に連結され、後部で
リアセンタサポート６４に支持されかつ後方に突
出し、オイルポンプ１２に連結されている駆動軸
７０が設けられ、その外側に中空円筒状で歯車変
速装置２０の入力軸でありかつトルクコンバータ
の出力軸８０が同軸状に設けられている。さらに
その外側に中空で先端に出力ギア９１が形成され
た歯車変速装置２０の出力軸９０が設けられ、そ
の外側に第１中間軸２６が設けられ、その外側に
第２中間軸２７が設けられている。 At the center of the torque converter case 50 and the transmission case 60, the front part is connected to the engine output shaft via the front cover 13, the rear part is supported by the rear center support 64, protrudes rearward, and is connected to the oil pump 12. A drive shaft 70 having a hollow cylindrical shape and serving as an input shaft of the gear transmission 20 and an output shaft 80 of a torque converter is coaxially provided on the outside of the drive shaft 70. Furthermore, an output shaft 90 of the gear transmission 20 is provided outside the gear transmission 20, which is hollow and has an output gear 91 formed at its tip, a first intermediate shaft 26 is provided outside the output shaft 90, and a second intermediate shaft 27 is provided outside the output shaft 90. ing.
直結クラツチ付流体式トルクコンバータ１０は
公知の構成を有し、フロントカバー１３を介して
エンジン出力軸に連結されたポンプインペラ１
４、前記中空のトルクコンバータの出力軸８０に
連結されたタービンランナ１６、一方向ブレーキ
１７を介して固定部分に係合されたステータ１
８、前記トルクコンバータの出力軸８０に連結さ
れた直結クツチ１９よりなる。 The hydraulic torque converter 10 with a direct coupling clutch has a known configuration, and includes a pump impeller 1 connected to an engine output shaft via a front cover 13.
4. A turbine runner 16 connected to the output shaft 80 of the hollow torque converter, and a stator 1 engaged to a fixed part via a one-way brake 17.
8. Consists of a direct coupling clutch 19 connected to the output shaft 80 of the torque converter.
自動変速機の歯車変速装置２０は、上記中間支
壁６３の後部に配された第１のプラネタリギアセ
ツト３０、該中間支壁６３の前部に配された第２
のプラネタリアギアセツト４０よび油圧サーボに
より作動され各プラネタリギアセツトの要素を連
結係合または解放する３つの多板クラツチC1，
C2，C3、３つの多板ブレーキB1，B2，B3、１つ
の一方向クツチF0、２つの一方向ブレーキF1，
F2を備える。各油圧サーボの油室に作動油が導
入されることによつてピストン１Ａはクラツチ
C1を、ピストン１ＢはクラツチC3を、ピストン
１ＣブレーキB2、ピストン１ＤはブレーキB3を
それぞれ駆動する。 The gear transmission 20 of the automatic transmission includes a first planetary gear set 30 disposed at the rear of the intermediate support wall 63, and a second planetary gear set 30 disposed at the front of the intermediate support wall 63.
planetary gear set 40 and three multi-disc clutches C 1 operated by hydraulic servos to connect and engage or disengage the elements of each planetary gear set.
C 2 , C 3 , three multi-disc brakes B 1 , B 2 , B 3 , one one-way brake F 0 , two one-way brakes F 1 ,
Equipped with F 2 . By introducing hydraulic oil into the oil chamber of each hydraulic servo, the piston 1A is engaged.
C 1 , piston 1B drives clutch C 3 , piston 1C brake B 2 , and piston 1D drives brake B 3 .
ピストン１Ｄの場合、環状平面２１の内周側に
リターンスプリング１DSを装着するスペースが
ないため、外周側を伸長し、該環状平面２１に当
接する環状板１DAを用いてリターンスプリング
１DSを係止している。 In the case of the piston 1D, there is no space to install the return spring 1DS on the inner circumferential side of the annular plane 21, so the outer circumferential side is extended and the return spring 1DS is locked using the annular plate 1DA that comes into contact with the annular plane 21. ing.
第１図は本発明にかかる自動変速機のピストン
の断面図、第２図は本発明にかかるピストンを装
着した自動変速機の断面図である。
図中、１，１Ａ，１Ｂ，１Ｃ，１Ｄ……ピスト
ン、２……環状板、２１……環状平面、２２……
環状凹部、２４……突起、２３，２６……環状平
板部、２５，２５Ｂ……周状間〓、２７Ａ，２７
Ｂ……肩部、２２１，２２２……支持用円筒面、
３，４……シール保持板、３１……フランジ部、
３２……内側円筒部、３３……外側円筒部、５…
…バツクアツプリング、６，７……リツプシー
ル。
FIG. 1 is a cross-sectional view of a piston of an automatic transmission according to the present invention, and FIG. 2 is a cross-sectional view of an automatic transmission equipped with a piston according to the present invention. In the figure, 1, 1A, 1B, 1C, 1D... piston, 2... annular plate, 21... annular plane, 22...
Annular recess, 24...Protrusion, 23, 26...Annular flat plate part, 25, 25B...Circumferential gap, 27A, 27
B... Shoulder part, 221, 222... Cylindrical surface for support,
3, 4...Seal retaining plate, 31...Flange part,
32... Inner cylindrical part, 33... Outer cylindrical part, 5...
...backup spring, 6,7...lip seal.
Claims (1)
それぞれ装着されて前記環状板との間にそれぞれ
内側周状間〓および外側周状間〓を形成する内周
側シール保持板および外周側シール保持板と、前
記内側周状間〓および外側周状間〓にそれぞれ装
着される内周側オイルシールおよび外周側オイル
シールとを備え、シリンダとの間に供給される油
圧によつて歯車変速装置の多板式係合装置を駆動
する自動変速機のピストンにおいて、前記環状板
はその外周端より半径方向内方に延びる環状平板
部と、該環状平板部の半径方向内方に設けられて
支持用円筒面を形成する肩部とを有し、前記外周
側シール保持板は前記支持用円筒面に嵌合可能な
内側円筒部と、前記環状板の外周端の外径よりや
や小さい外径を有する外側円筒部と、前記環状板
の外周端の外径とほぼ等しい外径を有するフラン
ジ部とを有し、前記内側円筒部を支持用円筒面に
嵌合することによつて前記外周側シール保持板を
前記環状板に装着して前記環状平板部と前記フラ
ンジ部との間に前記外側周状間〓を形成し、該外
側周状間〓内に前記外周側オイルシールと前記環
状板との間に位置するようにバツクアツプリング
を配設したことを特徴とする自動変速機のピスト
ン。 ２ 前記外周側シール保持板は、外側および内側
にそれぞれ前記内側円筒部および前記外側円筒部
を有したコの字形断面を持つ環状体の該外側円筒
部端が半径方向外方に延びて前記フランジ部が形
成されていることを特徴とする特許請求の範囲第
１項に記載の自動変速機のピストン。 ３ 前記オイルシールはリツプシールであり、前
記内側周状間〓および外側周状間〓にそれぞれ挟
持されていることを特徴とする特許請求の範囲第
１項に記載の自動変速機のピストン。[Scope of Claims] 1. An annular plate, and an inner periphery that is attached to the inner and outer peripheries of the annular plate and forms an inner circumferential gap and an outer circumferential gap, respectively, between the annular plate and the annular plate. A side seal holding plate, an outer seal holding plate, an inner circumferential oil seal and an outer circumferential oil seal installed between the inner circumferential space and the outer circumferential space, respectively, and the oil seal is supplied between the cylinder and the cylinder. In the piston of an automatic transmission that drives a multi-plate engagement device of a gear transmission by hydraulic pressure, the annular plate includes an annular flat plate portion extending radially inward from an outer peripheral end thereof, and a radially extending portion of the annular flat plate portion. a shoulder portion provided inwardly to form a supporting cylindrical surface; and a flange portion having an outer diameter approximately equal to the outer diameter of the outer peripheral end of the annular plate, and the inner cylindrical portion is fitted to the supporting cylindrical surface. The outer circumferential side seal holding plate is attached to the annular plate to form the outer circumferential space between the annular flat plate part and the flange part, and the outer circumferential side is attached within the outer circumferential space. A piston for an automatic transmission, characterized in that a back-up spring is disposed between an oil seal and the annular plate. 2. The outer peripheral side seal retaining plate is an annular body having a U-shaped cross section and having the inner cylindrical part and the outer cylindrical part on the outside and inside, respectively, and the end of the outer cylindrical part extends radially outward and connects to the flange. The piston for an automatic transmission according to claim 1, characterized in that the piston has a portion formed therein. 3. The piston for an automatic transmission according to claim 1, wherein the oil seal is a lip seal and is sandwiched between the inner circumferential space and the outer circumferential space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56083093A JPS57200729A (en) | 1981-05-29 | 1981-05-29 | Piston of speed change gear of automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56083093A JPS57200729A (en) | 1981-05-29 | 1981-05-29 | Piston of speed change gear of automatic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57200729A JPS57200729A (en) | 1982-12-09 |
| JPH0144930B2 true JPH0144930B2 (en) | 1989-10-02 |
Family
ID=13792559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56083093A Granted JPS57200729A (en) | 1981-05-29 | 1981-05-29 | Piston of speed change gear of automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57200729A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6079026U (en) * | 1983-11-07 | 1985-06-01 | マツダ株式会社 | automatic transmission clutch device |
| JPH04117932U (en) * | 1991-04-04 | 1992-10-22 | 本田技研工業株式会社 | Seal structure of sheet metal pressure receiving member |
| JP5502956B2 (en) * | 2012-09-05 | 2014-05-28 | 日産自動車株式会社 | Driving force transmission device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968159A (en) * | 1972-09-14 | 1974-07-02 |
-
1981
- 1981-05-29 JP JP56083093A patent/JPS57200729A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968159A (en) * | 1972-09-14 | 1974-07-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57200729A (en) | 1982-12-09 |
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