JPH0637653U - Seal structure of pressure receiving member - Google Patents
Seal structure of pressure receiving memberInfo
- Publication number
- JPH0637653U JPH0637653U JP7320192U JP7320192U JPH0637653U JP H0637653 U JPH0637653 U JP H0637653U JP 7320192 U JP7320192 U JP 7320192U JP 7320192 U JP7320192 U JP 7320192U JP H0637653 U JPH0637653 U JP H0637653U
- Authority
- JP
- Japan
- Prior art keywords
- seal
- receiving member
- pressure receiving
- piston
- seal groove
- 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
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Braking Arrangements (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
(57)【要約】
【構成】 流体圧を受けるピストン等の受圧部材３に、
シール溝の底壁を構成する筒部１１ａと、筒部の一端に
曲成した、シール溝の片側の側壁を構成するフランジ部
１１ｂと、筒部の他端に曲成した取付部１１ｃとを有す
るシールホルダ１１を取付部１１ｃにおいて固着し、フ
ランジ部１１ｂとこれに対向する受圧部材３の側面部分
１３との間に形成されるシール溝にシール部材１０を装
着して、受圧部材の他部材２に対する摺動部をシールす
る。受圧部材に筒部１１ａを係合させる段差部１５を形
成し、筒部１１ａと取付部１１ｃとのコーナアール部と
受圧部材の側面との間にできる隙間１４をシール溝に対
し遮蔽する。
【効果】 シール部材１０が隙間１４に食い込まず、シ
ール部材の他部材からの逃げが防止されてシール性が向
上する。
(57) [Summary] [Structure] In the pressure receiving member 3 such as a piston that receives fluid pressure,
A cylindrical portion 11a that constitutes the bottom wall of the seal groove, a flange portion 11b that is curved at one end of the cylindrical portion and that constitutes one side wall of the seal groove, and a mounting portion 11c that is curved at the other end of the cylindrical portion are provided. The seal holder 11 is fixedly attached at the mounting portion 11c, and the seal member 10 is attached to the seal groove formed between the flange portion 11b and the side surface portion 13 of the pressure receiving member 3 facing the flange portion 11b, and the other member of the pressure receiving member is attached. Seal the sliding part for 2. A step portion 15 for engaging the cylinder portion 11a is formed on the pressure receiving member, and the gap 14 formed between the corner round portion between the cylinder portion 11a and the mounting portion 11c and the side surface of the pressure receiving member is shielded from the seal groove. [Effect] The seal member 10 does not dig into the gap 14, and escape from other members of the seal member is prevented, so that the sealability is improved.
Description
【０００１】[0001]
本考案は、自動変速機用油圧クラッチ等に用いられる受圧部材のシール構造に 関する。 The present invention relates to a seal structure for a pressure receiving member used in a hydraulic clutch for an automatic transmission or the like.
【０００２】[0002]
従来、自動変速機用油圧クラッチの受圧部材たるピストンをカップ状にプレス 成形した板金製ピストンで構成したものが知られている。油圧クラッチのピスト ンは、クラッチドラムの内周のハブに摺動自在に外挿されており、ハブに対する 摺動部をシールするシール部材をピストンに取付ける必要があるが、板金製ピス トンでは、鋳造製のピストンと異なり、その内周面にシール部材を装着するシー ル溝を形成することができず、そこでピストンに別体のシールホルダを取付けて 両者間にシール溝を形成し、これにシール部材を装着するようにしている。 即ち、シールホルダを、シール溝の底壁となる筒部と、筒部の一端に曲成した 、シール溝の一側の側壁となるフランジ部と、筒部の他端に該フランジ部とは逆 側に曲成した、ピストンの側面に重合する取付部とを有するプレス成形品で構成 し、このシールホルダを取付部においてピストンに固着し、前記フランジ部に対 向するピストンの側面部分でシール溝の他側の側壁を構成するようにしている。 2. Description of the Related Art Conventionally, it is known that a piston, which is a pressure receiving member of a hydraulic clutch for an automatic transmission, is formed of a sheet metal piston which is press-formed into a cup shape. The piston of the hydraulic clutch is slidably inserted in the hub on the inner circumference of the clutch drum, and it is necessary to attach a seal member that seals the sliding part to the hub to the piston, but with the sheet metal piston, Unlike a piston made by casting, it is not possible to form a seal groove on the inner peripheral surface for mounting a seal member.Therefore, a separate seal holder is attached to the piston to form a seal groove between the two. A seal member is attached. That is, the seal holder has a cylindrical portion that is a bottom wall of the seal groove, a flange portion that is bent at one end of the cylindrical portion and that is a side wall on one side of the seal groove, and the flange portion at the other end of the cylindrical portion. It is composed of a press-molded product that has a mounting part that is bent on the opposite side and that overlaps with the side surface of the piston.This seal holder is fixed to the piston at the mounting part, and the side surface of the piston facing the flange part seals. The side wall on the other side of the groove is configured.
【０００３】[0003]
上記の如くシールホルダをピストンに取付けてシール溝を形成する場合、シー ルホルダの筒部と取付部とのコーナ部のアールにより該コーナ部とピストンの側 面との間に隙間ができ、この隙間にシール部材が食い込んでその分ハブから離間 する方向にシール部材が逃げてしまい、シール性が悪くなることがある。 本考案は、以上の点に鑑み、上記した隙間へのシール部材の食い込みを防止し てシール性を向上し得るようにしたシール構造を提供することをその目的として いる。 When the seal holder is attached to the piston to form the seal groove as described above, a gap is created between the corner portion of the seal holder and the side surface of the piston due to the radius of the corner portion of the attachment portion. In some cases, the seal member bites in and the seal member escapes in the direction in which it is separated from the hub, and the sealability deteriorates. The present invention has been made in view of the above points, and an object thereof is to provide a seal structure capable of improving the sealing performance by preventing the seal member from biting into the above-mentioned gap.
【０００４】[0004]
上記目的を達成すべく、本考案は、流体圧を受ける受圧部材の内周又は外周の 他部材に対する摺動部をシールするためのシール構造であって、摺動部をシール するシール部材を装着するシール溝の底壁を構成する筒部と、筒部の一端に曲成 した、シール溝の一側の側壁を構成するフランジ部と、筒部の他端に該フランジ 部とは逆側に曲成した、受圧部材の側面に重合する取付部とを有するシールホル ダを設けて、該シールホルダを該取付部において受圧部材に固着し、前記フラン ジ部に対向する受圧部材の側面部分でシール溝の他側の溝壁を構成するものにお いて、受圧部材の前記側面部分を前記フランジ部側に膨出させて、該側面部分と 前記取付部を重合させる受圧部材の側面部分との間に段差部を形成し、該段差部 に前記筒部の前記取付部寄りの端部を係合させたことを特徴とする。 In order to achieve the above object, the present invention has a seal structure for sealing a sliding portion on the inner or outer circumference of a pressure receiving member that receives a fluid pressure, and a seal member for sealing the sliding portion is attached. A bottom wall of the seal groove, a flange part that is bent at one end of the cylinder part and that constitutes one side wall of the seal groove, and the other end of the cylinder part on the opposite side of the flange part. A seal holder having a bent mounting portion that overlaps the side surface of the pressure receiving member is provided, the seal holder is fixed to the pressure receiving member at the mounting portion, and a side surface portion of the pressure receiving member facing the flange portion seals. In the groove wall on the other side of the groove, between the side surface portion of the pressure receiving member and the side surface portion of the pressure receiving member where the side surface portion and the mounting portion are overlapped with each other by bulging the side surface portion toward the flange portion side. A step portion is formed on the front side of the cylindrical portion. Characterized in that the end portion of the mounting portion toward engaged.
【０００５】[0005]
シールホルダの筒部と取付部とのコーナ部のアールによって受圧部材の側面と の間に隙間ができても、この隙間は段差部と筒部との係合部分においてシール溝 に対し遮蔽され、シール部材が隙間に食い込むことはない。 Even if a gap is created between the side surface of the pressure receiving member due to the radius of the corner portion between the cylindrical portion of the seal holder and the mounting portion, this gap is shielded against the seal groove at the engaging portion between the step portion and the cylindrical portion, The seal member does not cut into the gap.
【０００６】[0006]
図１を参照して、１は油圧クラッチのクラッチドラムを示し、該ドラムに変速 機の軸にスプライン係合するハブ２を取付けると共に、該ドラム１内にピストン ３を設けて、クラッチドラム１の側壁とピストン３との間に油室４を形成し、ハ ブ２に形成した油孔５を介して油室４に圧油を流入させたとき、ピストン３が図 面で右方に押動されて、ピストン３の外周の筒部６により図外のクラッチディス クが押圧され、油圧クラッチが締結されるようにした。 ピストン３は板金をカップ状にプレス形成して成るもので、その外周に縮径部 ７を形成して、該縮径部７に断面Ｕ字形の環状のシールホルダ８を圧入し、該ホ ルダ８で形成されるシール溝にピストン３の外周部をシールするシール部材９を 装着した。 Referring to FIG. 1, reference numeral 1 denotes a clutch drum of a hydraulic clutch. A hub 2 for spline-engaging a shaft of a transmission is attached to the drum, and a piston 3 is provided in the drum 1 so that the clutch drum 1 is provided. When the oil chamber 4 is formed between the side wall and the piston 3 and the pressure oil is flown into the oil chamber 4 through the oil hole 5 formed in the hub 2, the piston 3 is pushed to the right in the drawing. Then, the clutch disk (not shown) is pressed by the cylindrical portion 6 on the outer circumference of the piston 3, and the hydraulic clutch is engaged. The piston 3 is formed by pressing a sheet metal into a cup shape. A reduced diameter portion 7 is formed on the outer periphery of the piston 3, and a ring-shaped seal holder 8 having a U-shaped cross section is press-fitted into the reduced diameter portion 7. A seal member 9 for sealing the outer peripheral portion of the piston 3 was attached to the seal groove formed by 8.
【０００７】 ピストン３にはハブ２に対する内周の摺動部をシールするシール部材１０も装 着する必要があるが、ピストン３の内周部は平板状で上記の如き断面Ｕ字形のシ ールホルダを取付けることができないため、ピストン３の側面内周部に該ピスト ンとの間にシール溝を形成するシールホルダ１１を取付けて、シール部材１０を 装着するようにした。 このシールホルダ１１は、図２に示す如く、シール溝の底壁を構成する筒部１ １ａと、筒部１１ａの一端に径方向内方に向けて曲成した、シール溝の一側の溝 壁を構成するフランジ部１１ｂと、筒部１１ａの他端に径方向外方に向けて曲成 した、ピストン３の側面に重合する取付部１１ｃとを有するプレス成形品で構成 されており、取付部１１ｃを重合させるピストン３の側面部分に半抜き加工でピ ン部１２を突設し、該ピン部１２を取付部１１ｃに形成した透孔に挿通してかし めることによりシールホルダ１１をピストン３に固着した。そして、フランジ部 １１ｂに対向するピストン３の側面部分１３でシール溝の他側の側壁を構成し、 該側面部分１３とフランジ部１１ｂとの間に形成されるシール溝にシール部材１ ０を装着した。The piston 3 also needs to be equipped with a seal member 10 for sealing the sliding portion of the inner periphery of the hub 2. The inner peripheral portion of the piston 3 is flat and has a U-shaped cross section as described above. Since it is not possible to attach the seal member 10, the seal holder 11 that forms a seal groove between the piston 3 and the piston is attached to the inner peripheral surface of the side surface of the piston 3, and the seal member 10 is attached. As shown in FIG. 2, the seal holder 11 includes a cylindrical portion 11a that constitutes the bottom wall of the seal groove, and a groove on one side of the seal groove that is bent inward in the radial direction at one end of the cylindrical portion 11a. It is composed of a press-molded product having a flange portion 11b that constitutes a wall and a mounting portion 11c that is bent outward in the radial direction at the other end of the tubular portion 11a and that overlaps with the side surface of the piston 3 The pin holder 12 is provided on the side surface of the piston 3 where the portion 11c is superposed by a half blanking process, and the pin portion 12 is inserted into the through hole formed in the mounting portion 11c and caulked to seal the seal holder 11 Was fixed to the piston 3. The side surface portion 13 of the piston 3 facing the flange portion 11b constitutes the other side wall of the seal groove, and the seal member 10 is attached to the seal groove formed between the side surface portion 13 and the flange portion 11b. did.
【０００８】 ここで、筒部１１ａと取付部１１ｃとのコーナ部とピストン３の側面との間に はコーナ部のアールによる隙間１４ができ、この隙間１４がシール溝に開放され ていると、シール部材１０が隙間１４に食い込んでその分ハブ２に対する接触圧 が減少する。 そこで、本実施例では、フランジ部１１ｂに対向するピストン３の側面部分１ ３を半抜き加工でフランジ部１１ｂ側に膨出させ、これにより該側面部分１３と 前記取付部１１ｃを重合させるピストン３の側面部分との間に段差部１５を形成 し、該段差部１５に筒部１１ａの取付部１１ｃ寄りの端部を係合させるようにし た。これによれば、段差部１５と筒部１１ａとの係合部分において前記隙間１４ がシール溝に対し遮蔽されて、シール部材１０が隙間１４に食い込まなくなり、 ハブ２に対しシール部材１０が良好に接触してシール性が向上する。 尚、本実施例では段差部１５の先端のエッジに筒部１１ａを取付部１１ｃとの コーナ部の手前部分で係合させるようにしたが、段差部１５にコーナ部を係合さ せるようにしても良い。Here, a gap 14 due to the corner radius is formed between the corner portion between the tubular portion 11a and the mounting portion 11c and the side surface of the piston 3, and if this gap 14 is opened to the seal groove, The seal member 10 bites into the gap 14 and the contact pressure with respect to the hub 2 is reduced accordingly. In view of this, in this embodiment, the side surface portion 13 of the piston 3 facing the flange portion 11b is bulged toward the flange portion 11b side by half blanking, whereby the side surface portion 13 and the mounting portion 11c are superposed. The step portion 15 is formed between the step portion 15 and the side surface portion of the above, and the end portion of the cylindrical portion 11a near the mounting portion 11c is engaged with the step portion 15. According to this, the gap 14 is shielded against the seal groove at the engaging portion between the step portion 15 and the tubular portion 11a, the seal member 10 does not bite into the gap 14, and the seal member 10 is favorably attached to the hub 2. Contact is made to improve the sealability. In the present embodiment, the cylindrical portion 11a is engaged with the edge of the tip of the step portion 15 at the front portion of the corner portion with the mounting portion 11c. However, the corner portion is engaged with the step portion 15. May be.
【０００９】 以上、自動変速機用油圧クラッチのピストンに本考案を適用した実施例につい て説明したが、油圧クラッチ以外のピストン、更には流体圧を受けるピストン以 外の他の受圧部材のシール構造としても本考案は勿論適用できる。The embodiment in which the present invention is applied to the piston of the hydraulic clutch for the automatic transmission has been described above. However, the sealing structure of the piston other than the hydraulic clutch, and the pressure receiving member other than the piston receiving the fluid pressure is described. Of course, the present invention can be applied.
【００１０】[0010]
以上の説明から明らかなように、本考案によれば、シールホルダの筒部と取付 部とのコーナ部と受圧部材の側面との間に隙間ができても、この隙間へのシール 部材の食い込みが阻止され、シール部材の他部材に対する接触状態が良好に保た れてシール性が向上する。 As is clear from the above description, according to the present invention, even if there is a gap between the corner portion between the cylindrical portion and the mounting portion of the seal holder and the side surface of the pressure receiving member, the seal member bites into this gap. Is prevented, the state of contact with other members of the sealing member is kept good, and the sealing property is improved.
【図１】 本案シール構造を適用した油圧クラッチの断
面図FIG. 1 is a sectional view of a hydraulic clutch to which the proposed seal structure is applied.
【図２】 その要部の拡大断面図FIG. 2 is an enlarged cross-sectional view of the main part.
２ ハブ（他部材） ３ ピストン（受圧部
材） １０ シール部材 １１ シールホルダ １１ａ 筒部 １１ｂ フランジ部 １１ｃ 取付部 １３ フランジ部に対向する受圧部材の側面部分 １５ 段差部2 hub (other member) 3 piston (pressure receiving member) 10 seal member 11 seal holder 11a cylinder portion 11b flange portion 11c mounting portion 13 side surface portion of the pressure receiving member facing the flange portion 15 step portion
Claims (1)
の他部材に対する摺動部をシールするためのシール構造
であって、摺動部をシールするシール部材を装着するシ
ール溝の底壁を構成する筒部と、筒部の一端に曲成し
た、シール溝の一側の側壁を構成するフランジ部と、筒
部の他端に該フランジ部とは逆側に曲成した、受圧部材
の側面に重合する取付部とを有するシールホルダを設け
て、該シールホルダを該取付部において受圧部材に固着
し、前記フランジ部に対向する受圧部材の側面部分でシ
ール溝の他側の溝壁を構成するものにおいて、受圧部材
の前記側面部分を前記フランジ部側に膨出させて、該側
面部分と前記取付部を重合させる受圧部材の側面部分と
の間に段差部を形成し、該段差部に前記筒部の前記取付
部寄りの端部を係合させたことを特徴とする受圧部材の
シール構造。1. A seal structure for sealing a sliding portion of a pressure receiving member that receives a fluid pressure with respect to other members on an inner circumference or an outer circumference, and a bottom wall of a seal groove in which a sealing member that seals the sliding portion is mounted. And a flange portion that is bent at one end of the tubular portion and that constitutes a side wall on one side of the seal groove, and a pressure receiving member that is bent at the other end of the tubular portion on the opposite side of the flange portion. A seal holder having a mounting portion that overlaps the side surface of the seal holder is fixed to the pressure receiving member at the mounting portion, and a groove wall on the other side of the seal groove is formed on the side surface portion of the pressure receiving member facing the flange portion. The pressure-sensitive member has a side surface portion that bulges toward the flange portion side, and a step portion is formed between the side surface portion and the side surface portion of the pressure-receiving member that overlaps the mounting portion. Engage the end of the tubular part near the mounting part with the A seal structure for a pressure receiving member characterized by being provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992073201U JP2547748Y2 (en) | 1992-10-20 | 1992-10-20 | Seal structure of pressure receiving member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992073201U JP2547748Y2 (en) | 1992-10-20 | 1992-10-20 | Seal structure of pressure receiving member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0637653U true JPH0637653U (en) | 1994-05-20 |
| JP2547748Y2 JP2547748Y2 (en) | 1997-09-17 |
Family
ID=13511302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992073201U Expired - Lifetime JP2547748Y2 (en) | 1992-10-20 | 1992-10-20 | Seal structure of pressure receiving member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2547748Y2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056717A (en) * | 2001-08-20 | 2003-02-26 | Nok Corp | Bonded piston seal |
| JP2008275164A (en) * | 2007-05-02 | 2008-11-13 | Luk Lamellen & Kupplungsbau Beteiligungs Kg | Seal assembly and wet type twin clutch assembly with seal assembly |
| WO2010088986A1 (en) * | 2009-02-07 | 2010-08-12 | Schaeffler Technologies Gmbh & Co. Kg | Pressure piston assembly comprising a loose sealing ring |
| WO2012097854A1 (en) * | 2011-01-20 | 2012-07-26 | Schaeffler Technologies AG & Co. KG | Piston assembly |
| CN114096774A (en) * | 2019-07-26 | 2022-02-25 | 舍弗勒技术股份两合公司 | Valve, device for regulating the pressure of a fluid medium using said valve, and device for fixing said valve in a transmission component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61175328A (en) * | 1985-01-31 | 1986-08-07 | Yamakawa Kogyo Kk | Piston made of metal plate for transmission |
-
1992
- 1992-10-20 JP JP1992073201U patent/JP2547748Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61175328A (en) * | 1985-01-31 | 1986-08-07 | Yamakawa Kogyo Kk | Piston made of metal plate for transmission |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056717A (en) * | 2001-08-20 | 2003-02-26 | Nok Corp | Bonded piston seal |
| JP4701560B2 (en) * | 2001-08-20 | 2011-06-15 | Ｎｏｋ株式会社 | Bonded piston seal |
| JP2008275164A (en) * | 2007-05-02 | 2008-11-13 | Luk Lamellen & Kupplungsbau Beteiligungs Kg | Seal assembly and wet type twin clutch assembly with seal assembly |
| WO2010088986A1 (en) * | 2009-02-07 | 2010-08-12 | Schaeffler Technologies Gmbh & Co. Kg | Pressure piston assembly comprising a loose sealing ring |
| WO2012097854A1 (en) * | 2011-01-20 | 2012-07-26 | Schaeffler Technologies AG & Co. KG | Piston assembly |
| CN114096774A (en) * | 2019-07-26 | 2022-02-25 | 舍弗勒技术股份两合公司 | Valve, device for regulating the pressure of a fluid medium using said valve, and device for fixing said valve in a transmission component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2547748Y2 (en) | 1997-09-17 |
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