JPH0118302B2 - - Google Patents
Info
- Publication number
- JPH0118302B2 JPH0118302B2 JP60018145A JP1814585A JPH0118302B2 JP H0118302 B2 JPH0118302 B2 JP H0118302B2 JP 60018145 A JP60018145 A JP 60018145A JP 1814585 A JP1814585 A JP 1814585A JP H0118302 B2 JPH0118302 B2 JP H0118302B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- oil seal
- plate
- hole
- spring seat
- 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
- 239000002184 metal Substances 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
- F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
-
- 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
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は車輌における変速機用の板金製ピスト
ンに係り、殊に該板金製ピストンを収容せるクラ
ツチドラムに対する内側オイルシール機構に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sheet metal piston for a transmission in a vehicle, and more particularly to an inner oil seal mechanism for a clutch drum housing the sheet metal piston.
従来技術とその問題点
例えば特開昭49−第68159号に示されるように
従来の変速機用の板金製ピストン１（第１図参
照）はクラツチドラム４内に収嵌し、該クラツチ
ドラム内底に導入した油圧をピストン１のピスト
ン板２の底面に作用させてこれを復帰用バネに抗
し押上げ、該押上げに伴いピストン板周囲のリム
３の端部でクラツチドラム４のスプライン形成リ
ム４′内に嵌装したクラツチ板を押圧しクラツチ
結合状態を得る構成となつている。そしてリム外
周面にオイルシールリング５を配し、該リング５
をクラツチドラム４のスプライン形成リム４′の
内周面に密着させ、ピストン外側におけるオイル
シールを図ると共に、ピストン板２中央に穿けら
れた貫装孔６の内周面にオイルシールリング７を
配し、該リング７を上記貫装孔６に貫装されたク
ラツチドラム４の軸挿通筒８の外周面へ密着させ
ピストン内側におけるオイルシールを図る構成と
なつている。Prior Art and its Problems For example, as shown in Japanese Patent Laid-Open No. 49-68159, a conventional sheet metal piston 1 (see Fig. 1) for a transmission is fitted into a clutch drum 4, and The hydraulic pressure introduced at the bottom is applied to the bottom surface of the piston plate 2 of the piston 1 to push it up against the return spring, and as it is pushed up, a spline is formed on the clutch drum 4 at the end of the rim 3 around the piston plate. The clutch plate fitted in the rim 4' is pressed to obtain the clutch engaged state. Then, an oil seal ring 5 is arranged on the outer peripheral surface of the rim, and the ring 5
is brought into close contact with the inner circumferential surface of the spline-formed rim 4' of the clutch drum 4 to achieve an oil seal on the outside of the piston, and an oil seal ring 7 is disposed on the inner circumferential surface of the through hole 6 bored in the center of the piston plate 2. The ring 7 is brought into close contact with the outer circumferential surface of the shaft insertion tube 8 of the clutch drum 4 inserted into the through hole 6 to provide an oil seal inside the piston.
然るに従来上記外側オイルシールリング５及び
内側オイルシールリング７の取付に際しては、別
部品として断面Ｌ字形の取付リング９ａ，９ｂを
準備し、これを図示のようにクラツチドラム４の
ボデイに圧入し、該取付リング９ａ，９ｂの立上
りとドラムボデイの屈曲部との間で環状溝を形成
し、該環状溝に上記オイルシールリング５，７を
嵌着する構造を採つており、内、外オイルシール
リング５，７の何れにしても別部品たる取付リン
グの製作が必要となり、更にはリング圧入の組立
工数を要し、これに伴いコスト増加を招来する。
又別部品たる取付リングの圧入機構を採るため機
械的信頼性低下の要因ともなる。 Conventionally, however, when installing the outer oil seal ring 5 and the inner oil seal ring 7, mounting rings 9a and 9b each having an L-shaped cross section are prepared as separate parts, and these are press-fitted into the body of the clutch drum 4 as shown in the figure. An annular groove is formed between the rising edge of the mounting rings 9a, 9b and the bent portion of the drum body, and the oil seal rings 5, 7 are fitted into the annular groove. In either case 5 or 7, it is necessary to manufacture a mounting ring as a separate part, and furthermore, the number of assembly steps required for press-fitting the ring is required, resulting in an increase in cost.
In addition, since a press-fitting mechanism is used for the mounting ring, which is a separate component, it also causes a decrease in mechanical reliability.
発明の目的
而して、本発明は上記オイルシール機構、殊に
上記内側オイルシール機構に関して改善された変
速機用板金製ピストンを提供する。即ち、前記内
側オイルシール機構の形成を板金製ピストンの板
金ボデイ部分と板金製ピストン復帰用バネを支承
するバネ座との活用に係わらしめ、従来の如き取
付リングを使用しないリングレス機構を構成して
部品及び組立工数の削減を図りつつ、高信頼のオ
イルシール機構の提供を可能にしたものである。OBJECTS OF THE INVENTION Accordingly, the present invention provides a sheet metal piston for a transmission which is improved with regard to the oil seal mechanism, particularly the inner oil seal mechanism. That is, the inner oil seal mechanism is formed by utilizing the sheet metal body portion of the sheet metal piston and the spring seat that supports the sheet metal piston return spring, thereby forming a ringless mechanism that does not use a conventional mounting ring. This makes it possible to provide a highly reliable oil seal mechanism while reducing parts and assembly man-hours.
発明の構成
本発明は上記目的を達成すべく構成されたもの
であつて、後述する実施例から理解できるよう
に、ピストン板に該ピストン板と同心円となるバ
ネ座を一体に組付け、ピストン板の中央の貫装孔
とバネ座中央に設けた貫装孔とを同心円に連通さ
せると共に、ピストン板の貫装孔周縁に設けた環
状リツプと、バネ座の貫装孔周縁に設けた環状リ
ツプとにより上記両貫装孔の中心へ向け開口した
環状溝を形成し、該環状溝にオイルシールリング
を嵌着保持させ、前記従来の取付リングの圧入機
構を採らずにクラツチドラムに対する完全なオイ
ルシール機構を構成できるようにした、簡潔にし
て且つ合目的的な前記内側オイルシール機構を提
供したものである。Structure of the Invention The present invention is configured to achieve the above object, and as can be understood from the embodiments described later, a spring seat concentric with the piston plate is integrally assembled to the piston plate, and the piston plate is The through-hole in the center of the piston plate and the through-hole provided in the center of the spring seat are concentrically connected to each other, and the annular lip provided around the through-hole in the piston plate and the annular lip provided around the through-hole in the spring seat. An annular groove opening toward the center of both of the through holes is formed by this, and an oil seal ring is fitted and held in the annular groove, thereby completely sealing the oil to the clutch drum without using the conventional press-fitting mechanism of the mounting ring. The present invention provides a simple and purposeful inner oil seal mechanism that allows the construction of a seal mechanism.
発明の実施例
以下本発明の実施例を第２図乃至第５図に基い
て詳述する。Embodiments of the Invention Examples of the present invention will be described in detail below with reference to FIGS. 2 to 5.
同図において、１１は変速機におけるクラツチ
板作動用の板金製ピストンを示す。該板金製ピス
トン１１にはプレス成形にてピストン板１２の周
囲にリム１３を折曲形成し、これをクラツチ板押
圧手段とする。該押圧を良好に行わせるため、リ
ム部先端に内側へ折曲された環状の形折曲部を
形成し、これをクラツチ板押圧部４２とする。又
ピストン板１２の中央部には貫装孔１６を穿け、
該貫装孔１６の周囲にリム１３と同方向のフラン
ジ２０を折曲形成し、該フランジ２０の先端を中
心方向に形に曲げ環状リツプ２１を形成する。
他方該ピストン１１の貫装孔１６と同心円となる
貫装孔３３を中央部に有する板金製の円形バネ座
２２を形成し、該円形バネ座２２の貫装孔３３の
周囲にフランジ２３を折曲形成し、該フランジ２
３の先端を中心方向に形に曲げ環状リツプ２４
を形成する。 In the figure, reference numeral 11 indicates a sheet metal piston for actuating a clutch plate in a transmission. The sheet metal piston 11 is press-molded to have a rim 13 bent around the piston plate 12, which serves as clutch plate pressing means. In order to perform this pressing well, an annular bent portion bent inward is formed at the tip of the rim portion, and this is used as the clutch plate pressing portion 42. Also, a through hole 16 is bored in the center of the piston plate 12,
A flange 20 is bent in the same direction as the rim 13 around the through hole 16, and the tip of the flange 20 is bent toward the center to form an annular lip 21.
On the other hand, a circular spring seat 22 made of sheet metal having a through hole 33 concentric with the through hole 16 of the piston 11 in the center is formed, and a flange 23 is folded around the through hole 33 of the circular spring seat 22. The flange 2 is curved.
Bend the tip of 3 toward the center to form an annular lip 24
form.
更にバネ座２２の周囲にフランジ２３との間で
環状路２５を形成するバネ受形成壁２６を折曲形
成し、該バネ受形成壁２６を間隔的に直径方向へ
半円筒形に曲げ出し、よつてバネ座２２の周囲に
フランジ２３とバネ受形成壁２６と両者間を連結
する座板２８にて画成され、且つ環状路２５によ
つて互いに連通されたピストン復帰バネ毎のバネ
受室２７を形成する。 Further, a spring receiving forming wall 26 forming an annular path 25 with the flange 23 is bent around the spring seat 22, and the spring receiving forming wall 26 is bent at intervals in the diametrical direction into a semi-cylindrical shape. Therefore, a spring receiving chamber for each piston return spring is defined around the spring seat 22 by the flange 23, the spring receiving forming wall 26, and the seat plate 28 connecting the two, and communicated with each other by the annular path 25. form 27.
斯くして形成されたバネ座２２をピストン１１
内に収め座板２８をピストン板１２に重ねスポツ
ト溶接にて一体構造とする。同時にピストン１１
のフランジ２０の外周面にバネ座２２のフランジ
２３を嵌合して貫装孔１６，２３を同心に連通さ
せると共に、環状リツプ２１，２４を互いに対向
させ、両リツプ２１，２４間に貫装孔１６，３３
の中心へ向け開口した環状溝２９を形成し、該環
状溝２９に内側オイルシールリング１７を嵌着保
持させる。即ち、バネ座２２をオイルシール機構
形成要素として兼用する。 The spring seat 22 thus formed is attached to the piston 11.
The seat plate 28 is placed inside the piston plate 12 and is spot welded to form an integral structure. At the same time piston 11
The flange 23 of the spring seat 22 is fitted to the outer peripheral surface of the flange 20 of the spring seat 22 so that the through holes 16 and 23 are concentrically communicated with each other. Hole 16, 33
An annular groove 29 opening toward the center is formed, and the inner oil seal ring 17 is fitted and held in the annular groove 29. That is, the spring seat 22 also serves as an oil seal mechanism forming element.
又本発明は、前記の如くピストン板１２の周囲
にリム１３を折曲形成してクラツチ板押圧手段と
すると共に、該リム１３の基部を内周面側へＵ字
形に曲げ込み、リム外周面に該Ｕ字曲壁３１によ
る環状溝３２を形成し、該環状溝３２に外側オイ
ルシールリング１５を嵌着する。 Further, in the present invention, as described above, the rim 13 is bent around the piston plate 12 to serve as a clutch plate pressing means, and the base of the rim 13 is bent into a U-shape toward the inner circumferential surface, so that the outer circumferential surface of the rim is bent. An annular groove 32 is formed by the U-shaped curved wall 31, and the outer oil seal ring 15 is fitted into the annular groove 32.
好ましくは上記Ｕ字曲壁３１はその曲げ込み片
が第２図に示す如く、ピストン板１２の外周縁部
表面へ折り重なる構造とする。 Preferably, the U-shaped curved wall 31 has a structure in which a bent piece thereof is folded over the outer circumferential edge surface of the piston plate 12, as shown in FIG.
第５図は上記の如く構成された板金製のピスト
ン１１を同様に板金製のクラツチドラム１４内に
組込んだ状態を示す。 FIG. 5 shows a state in which the piston 11 made of sheet metal constructed as described above is assembled into a clutch drum 14 also made of sheet metal.
クラツチドラム１４は底板３６にスプライン形
成リム１４′が折曲形成され、該スプライン形成
リム１４′の内周面にクラツチ板が組込まれ、上
記板金製のピストン１１のリム１３端部上に配置
される。 The clutch drum 14 has a spline-formed rim 14' bent and formed on a bottom plate 36, and a clutch plate is incorporated into the inner peripheral surface of the spline-formed rim 14', and is disposed on the end of the rim 13 of the piston 11 made of sheet metal. Ru.
図中３８はクラツチ板を形成するドライブプレ
ート、３９は同ドリブンプレートを示し、４０は
リテイニングプレート、４１は上記クラツチ板の
離脱を防止するスナツプリングを示す。 In the figure, 38 is a drive plate forming a clutch plate, 39 is a driven plate, 40 is a retaining plate, and 41 is a snap spring that prevents the clutch plate from coming off.
上記クラツチドラム１４の中央には軸挿通筒１
８が折曲形成され、該軸挿通筒１８の外周面へ上
記板金製ピストン１１とバネ座２２の組立体をそ
の貫装孔１６，３３を以つて貫装する。 A shaft insertion tube 1 is provided in the center of the clutch drum 14.
8 is bent and formed, and the assembly of the sheet metal piston 11 and spring seat 22 is inserted into the outer peripheral surface of the shaft insertion tube 18 through its through holes 16 and 33.
上記の如くしてクラツチドラム１４内底にピス
トン１１とバネ座２２の組立体が収嵌され、その
内側オイルシールリング１７を上記軸挿通筒１８
の外周面に密着させつつ、上記外側オイルシール
リング１５をスプライン形成リム１４′の基部内
周面、即ちスプラインが延在しないリム１４′の
基部内周面へ密着させる。 As described above, the assembly of the piston 11 and the spring seat 22 is fitted into the inner bottom of the clutch drum 14, and the inner oil seal ring 17 is inserted into the shaft insertion cylinder 18.
The outer oil seal ring 15 is brought into close contact with the inner peripheral surface of the base of the spline-formed rim 14', that is, the inner peripheral surface of the base of the rim 14' where the spline does not extend.
而して、クラツチドラム１４内底に導入した油
圧をピストン板１２の底面に作用させてこれを押
上げ、該押上げに伴い上記リム１３の端部の押圧
部４２でクラツチドラム１４のスプライン形成リ
ム１４′内に組込んだクラツチ板たるドライブプ
レート３８及びドリブンプレート３９を押圧しク
ラツチの結合状態を形成する。 The hydraulic pressure introduced into the inner bottom of the clutch drum 14 is applied to the bottom surface of the piston plate 12 to push it up, and as it is pushed up, the pressing part 42 at the end of the rim 13 forms a spline on the clutch drum 14. The drive plate 38 and driven plate 39, which are the clutch plates assembled in the rim 14', are pressed to form a coupled state of the clutch.
３４はピストン復帰バネを示し、同バネ３４は
その一端が前記ピストン１１に組付けられたバネ
座２２のバネ受室２７に収容された座板２８に支
持され、他端はクラツチドラム１４の軸挿通筒１
８に取付けた別のバネ座３７に支持され、両バネ
座２２，３７間に圧縮状態に弾装しその弾発力に
より板金製ピストン１１に常時復帰弾力を与え
る。 Reference numeral 34 denotes a piston return spring, one end of which is supported by a seat plate 28 accommodated in the spring receiving chamber 27 of the spring seat 22 assembled to the piston 11, and the other end supported by the shaft of the clutch drum 14. Insertion tube 1
The piston 11 is supported by another spring seat 37 attached to the spring seat 8, and is elastically mounted in a compressed state between the spring seats 22 and 37, and its elastic force always gives return elasticity to the sheet metal piston 11.
同ピストン１１は前記油圧により該バネ３４の
弾発力に抗しクラツチ板を押上げる方向に移動さ
れ、油圧解除によりバネ３４の弾発力に従いドラ
ム内底へ復帰し、クラツチを解除状態とする。 The piston 11 is moved by the hydraulic pressure in the direction of pushing up the clutch plate against the elastic force of the spring 34, and when the hydraulic pressure is released, it returns to the inner bottom of the drum according to the elastic force of the spring 34, releasing the clutch. .
上記板金製ピストン１１の内側オイルシールリ
ング１７及び外側オイルシールリング１５は上記
ピストン板１２の底面へ作用する油圧を良好に封
鎖し、ピストン１１を駆動する。 The inner oil seal ring 17 and the outer oil seal ring 15 of the sheet metal piston 11 effectively block the hydraulic pressure acting on the bottom surface of the piston plate 12 and drive the piston 11.
発明の効果
而して、本発明は以上詳述したように、変速機
用板金製ピストンにおけるオイルシール機構、殊
に内側オイルシール機構に関し、その製造面及び
機能面の両面で改善された同板金製ピストンを提
供できる。Effects of the Invention As detailed above, the present invention relates to an oil seal mechanism, particularly an inner oil seal mechanism, in a sheet metal piston for a transmission, and provides a sheet metal piston that is improved in both manufacturing and functional aspects. We can provide manufactured pistons.
即ち、本発明は内側オイルシール機構の形成を
板金製ピストンの板金ボデイ部分と板金製ピスト
ン復帰用バネを支承するバネ座との活用に係わら
しめ、ピストン板に該ピストン板と同心円となる
バネ座を一体に組付け、ピストン板の中央の貫装
孔とバネ座中央に設けた貫装孔とを同心円に連通
させると共に、ピストン板の貫装孔周縁に設けた
環状リツプと、バネ座の貫装孔周縁に設けた環状
リツプとにより上記貫装孔の中心へ向け開口した
環状溝を形成し、該環状溝にオイルシールリング
を嵌着保持させる構成としたので、従来の取付リ
ングを使用しないリングレス機構を構成して部品
及び組立工数の削減を図りつつ、高信頼のオイル
シール機構の提供を可能にしたものである。 That is, the present invention relates the formation of the inner oil seal mechanism to the use of a sheet metal body portion of a sheet metal piston and a spring seat that supports a sheet metal piston return spring, and a spring seat that is concentric with the piston plate on the piston plate. The through-hole in the center of the piston plate and the through-hole provided in the center of the spring seat are connected concentrically, and the annular lip provided around the through-hole in the piston plate and the through-hole in the spring seat are assembled together. An annular lip provided on the periphery of the hole forms an annular groove that opens toward the center of the through hole, and the oil seal ring is fitted and held in the annular groove, so a conventional mounting ring is not used. By configuring a ringless mechanism, it is possible to provide a highly reliable oil seal mechanism while reducing parts and assembly man-hours.
即ち、従来の如きピストン板に圧入する取付リ
ングの準備及び同圧入工程を削減して板金製ピス
トンと内側オイルシールリングの一体構造化が図
れ、構成簡素にして的確なオイルシール効果が得
られ、従来の別部品たる取付リング圧入に伴なう
機械的信頼性低下の要因を形成せず、高信頼のオ
イルシール機構が提供でき、加えて車輌において
要求の高いコスト削減と軽量化が図れる。 That is, it is possible to reduce the conventional process of preparing the mounting ring to be press-fitted into the piston plate and press-fitting it, and to achieve an integral structure of the sheet metal piston and the inner oil seal ring, and to obtain an accurate oil sealing effect with a simple configuration. A highly reliable oil seal mechanism can be provided without causing mechanical reliability deterioration associated with the conventional press-fitting of a separate mounting ring, and in addition, it is possible to achieve cost reduction and weight reduction, which are highly demanded in vehicles.
第１図は従来の変速機用の板金製ピストンの断
面図、第２図以降は本発明の実施例を示し、第２
図は同実施例たる変速機用の板金製ピストンの断
面図、第３図は同ピストンの分解斜視図、第４図
はオイルシールリングを外して示す同ピストンの
組立斜視図、第５図は同ピストンをクラツチドラ
ムに組込んだ変速機の要部を示す断面図である。
１１……板金製のピストン、１２……ピストン
板、１４……クラツチドラム、１６，３３……貫
装孔、１７……内側オイルシールリング、１８…
…軸挿通筒、２２……バネ座、２１，２４……環
状リツプ、２６……バネ受形成壁、２７……バネ
受室、２８……座板、２９……環状溝、３４……
ピストン復帰バネ。
Fig. 1 is a sectional view of a conventional sheet metal piston for a transmission, and Fig. 2 and subsequent figures show embodiments of the present invention.
The figure is a sectional view of a sheet metal piston for a transmission according to the same embodiment, Figure 3 is an exploded perspective view of the same piston, Figure 4 is an assembled perspective view of the same piston with the oil seal ring removed, and Figure 5 is FIG. 2 is a cross-sectional view showing a main part of a transmission in which the same piston is incorporated into a clutch drum. 11... Sheet metal piston, 12... Piston plate, 14... Clutch drum, 16, 33... Penetration hole, 17... Inner oil seal ring, 18...
...Shaft insertion tube, 22... Spring seat, 21, 24... Annular lip, 26... Spring receiving forming wall, 27... Spring receiving chamber, 28... Seat plate, 29... Annular groove, 34...
Piston return spring.
Claims (1)
ネ座を一体に組付け、ピストン板の中央の貫装孔
とバネ座中央に設けた貫装孔とを同心円に連通さ
せると共に、ピストン板の貫装孔周縁に設けた環
状リツプと、バネ座の貫装孔周縁に設けた環状リ
ツプとにより上記両貫装孔の中心へ向け開口した
環状溝を形成し、該環状溝にオイルシールリング
を嵌着保持させたことを特徴とする変速機用の板
金製ピストン。 ２ 上記バネ座が同心円上に配されたピストン復
帰バネ毎の複数のバネ受室を有することを特徴と
する特許請求の範囲第１項記載の発明。[Scope of Claims] 1. A spring seat that is concentric with the piston plate is integrally assembled to the piston plate, and a through hole in the center of the piston plate and a through hole provided in the center of the spring seat are communicated concentrically. An annular lip provided at the periphery of the through hole of the piston plate and an annular lip provided at the periphery of the through hole of the spring seat form an annular groove opening toward the center of both the through holes, and the annular groove is A sheet metal piston for transmissions that features an oil seal ring that is fitted and retained. 2. The invention according to claim 1, wherein the spring seat has a plurality of spring receiving chambers for each piston return spring arranged concentrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60018145A JPS61175328A (en) | 1985-01-31 | 1985-01-31 | Piston made of metal plate for transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60018145A JPS61175328A (en) | 1985-01-31 | 1985-01-31 | Piston made of metal plate for transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61175328A JPS61175328A (en) | 1986-08-07 |
| JPH0118302B2 true JPH0118302B2 (en) | 1989-04-05 |
Family
ID=11963439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60018145A Granted JPS61175328A (en) | 1985-01-31 | 1985-01-31 | Piston made of metal plate for transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61175328A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002372073A (en) * | 2001-06-13 | 2002-12-26 | Nok Corp | Sealing device |
| JP2003042185A (en) * | 2001-08-01 | 2003-02-13 | Nok Corp | Tight seal |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2547748Y2 (en) * | 1992-10-20 | 1997-09-17 | 本田技研工業株式会社 | Seal structure of pressure receiving member |
| DE10151542B4 (en) * | 2001-10-23 | 2006-12-28 | Carl Freudenberg Kg | Complete piston |
| JP2009097609A (en) * | 2007-10-16 | 2009-05-07 | Nok Corp | Piston for multistage transmission |
| DE102009025721A1 (en) * | 2009-02-07 | 2010-08-19 | Schaeffler Technologies Gmbh & Co. Kg | Plunger assembly with loose seal |
-
1985
- 1985-01-31 JP JP60018145A patent/JPS61175328A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002372073A (en) * | 2001-06-13 | 2002-12-26 | Nok Corp | Sealing device |
| JP2003042185A (en) * | 2001-08-01 | 2003-02-13 | Nok Corp | Tight seal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61175328A (en) | 1986-08-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |