JP6848087B2

JP6848087B2 - Support structure for parts using retaining rings

Info

Publication number: JP6848087B2
Application number: JP2019554214A
Authority: JP
Inventors: 泰崇植松
Original assignee: Piolax Inc
Current assignee: Piolax Inc
Priority date: 2017-11-20
Filing date: 2018-11-13
Publication date: 2021-03-24
Anticipated expiration: 2038-11-13
Also published as: WO2019098170A1; JPWO2019098170A1

Description

本発明は、外側部品と、その内側に配置される内側部品とを互いに支持する、止め輪を用いた部品の支持構造に関する。 The present invention relates to a component support structure using a retaining ring that supports the outer component and the inner component arranged inside the outer component with each other.

従来から、筒状ケース等の外側部品の内側に、環状リング等の内側部品が配置される場合に、止め輪を利用して、両部品を軸方向に移動しないように支持する構造が知られている。 Conventionally, when an inner part such as an annular ring is arranged inside an outer part such as a tubular case, a structure has been known in which both parts are supported so as not to move in the axial direction by using a retaining ring. ing.

例えば、図１０（ａ）に示すように、外側部品１０の内側に環状溝１１を設けておき、この環状溝１１に止め輪を挿入し、この止め輪の、環状溝１１から突出した部分によって、内側部品２０を支持するような構造がある。なお、この止め輪は、断面長方形状をなした、Ｃ字リング状をなしている。 For example, as shown in FIG. 10A, an annular groove 11 is provided inside the outer component 10, a retaining ring is inserted into the annular groove 11, and a portion of the retaining ring protruding from the annular groove 11 is used. , There is a structure that supports the inner component 20. The retaining ring has a C-shaped ring shape with a rectangular cross section.

また、下記特許文献１には、輪状体の内周面に、軸の外周面に圧接する支持面と、軸の外周面に周設された環状凹溝に嵌入する環状突起とを設け、輪状体の円周方向の一箇所に切欠部を設けてなる軸用の止め輪が記載されている。そして、軸外周の環状凹溝に、環状突起を嵌入することで、軸外周に止め輪が装着され、輪状体の軸方向一端面によって、軸外周に配置された筒状部品を支持可能となっている。 Further, in Patent Document 1 below, a support surface that is in pressure contact with the outer peripheral surface of the shaft and an annular protrusion that is fitted into an annular concave groove provided around the outer peripheral surface of the shaft are provided on the inner peripheral surface of the ring-shaped body to form a ring shape. A retaining ring for a shaft provided with a notch at one position in the circumferential direction of the body is described. Then, by fitting the annular protrusion into the annular concave groove on the outer circumference of the shaft, a retaining ring is attached to the outer circumference of the shaft, and the tubular part arranged on the outer circumference of the shaft can be supported by one end surface in the axial direction of the ring-shaped body. ing.

特開平２−２５６９０７号公報Japanese Unexamined Patent Publication No. 2-256907

上記の図１０（ａ）に示す構造において、内側部品２０にスラスト荷重が作用すると、止め輪の軸方向一端面側が押されて、環状溝１１の、荷重作用方向側の内面１３の開口縁部１５に、止め輪の軸方向他端面が当たる。また、上記特許文献１の止め輪でも同様に、筒状部品にスラスト荷重が作用すると、輪状体の、軸方向一端面側が押されて、環状溝の、荷重作用方向側の内面のエッジ部に、輪状体の軸方向他端面が当たる。そのため、止め輪や、輪状体の軸方向一端面及び他端面に、圧痕が発生しやすくなり、この圧痕を起点としてひび割れが生じて破損してしまう可能性があった。 In the structure shown in FIG. 10A, when a thrust load is applied to the inner component 20, the one end surface side in the axial direction of the retaining ring is pushed, and the opening edge portion of the inner surface 13 of the annular groove 11 on the load acting direction side. The other end surface of the retaining ring in the axial direction hits 15. Similarly, in the retaining ring of Patent Document 1, when a thrust load is applied to the tubular part, the one end surface side in the axial direction of the ring-shaped body is pushed, and the edge portion of the inner surface of the annular groove on the load acting direction side is pressed. , The other end surface of the ring-shaped body in the axial direction hits. Therefore, indentations are likely to occur on the retaining ring and the axial end surface and the other end surface of the ring-shaped body, and there is a possibility that cracks may occur and the ring shape may be damaged from the indentation as a starting point.

したがって、本発明の目的は、荷重作用時に、止め輪に圧痕を発生しにくくし、ひび割れを抑えて破損を抑制することができる、止め輪を用いた部品の支持構造を提供することにある。 Therefore, an object of the present invention is to provide a support structure for a part using a retaining ring, which makes it difficult for indentations to be generated on the retaining ring when a load is applied, suppresses cracks, and suppresses breakage.

上記目的を達成するため、本発明は、外側部品と、該外側部品の内側に配置される内側部品と、前記外側部品の内周又は前記内側部品の外周に形成された環状溝と、前記環状溝に挿入される基部及び該基部から前記環状溝の外側に突出する受け部を有する止め輪とを備え、前記外側部品又は前記内側部品のうち、前記環状溝を有さない部品は、前記受け部の、軸方向一方に位置する受け面に支持されており、前記基部の、軸方向に見て前記受け面とは反対側の面は、前記環状溝の対応する内面に当接する係合面をなしており、前記受け部の、軸方向に見て前記受け面とは反対側の面は、前記係合面よりも前記受け面側に位置していることを特徴とする。 In order to achieve the above object, the present invention comprises an outer component, an inner component arranged inside the outer component, an annular groove formed on the inner circumference of the outer component or the outer circumference of the inner component, and the annular groove. A base portion to be inserted into the groove and a retaining ring having a receiving portion protruding from the base portion to the outside of the annular groove are provided, and the outer component or the inner component having no annular groove is the receiver. The portion is supported by a receiving surface located on one side in the axial direction, and the surface of the base portion opposite to the receiving surface when viewed in the axial direction is an engaging surface that abuts on the corresponding inner surface of the annular groove. The surface of the receiving portion opposite to the receiving surface when viewed in the axial direction is located on the receiving surface side of the engaging surface.

本発明によれば、止め輪の受け部の、軸方向に見て受け面とは反対側の面は、基部の環状溝の内面に当接する係合面よりも、受け面側に位置しているので、外側部品又は内側部品からのスラスト荷重が、受け部の受け面側に作用した際に、受け部の、軸方向に見て受け面とは反対側の面が、環状溝の開口縁部に当接することを防止して、受け部の、受け面及び受け面とは反対側の面に、圧痕を発生しにくくすることができ、圧痕を起点として発生するひび割れを抑えて、止め輪の破損を抑制することができ、外側部品と内側部品とをしっかりと支持することができる。 According to the present invention, the surface of the receiving portion of the retaining ring opposite to the receiving surface when viewed in the axial direction is located on the receiving surface side with respect to the engaging surface that abuts on the inner surface of the annular groove of the base. Therefore, when the thrust load from the outer part or the inner part acts on the receiving surface side of the receiving portion, the surface of the receiving portion opposite to the receiving surface when viewed in the axial direction is the opening edge of the annular groove. By preventing contact with the portion, it is possible to prevent indentation from being generated on the receiving surface and the surface opposite to the receiving surface of the receiving portion, and it is possible to suppress cracks generated from the indentation as a starting point and stop the ring. Damage can be suppressed, and the outer part and the inner part can be firmly supported.

本発明に係る止め輪を用いた部品の支持構造の、第１実施形態を示す分解斜視図である。It is an exploded perspective view which shows 1st Embodiment of the support structure of the part using the retaining ring which concerns on this invention. （ａ）は同支持構造の要部拡大断面斜視図、（ｂ）は同支持構造の要部拡大断面説明図である。(A) is an enlarged cross-sectional perspective view of a main part of the support structure, and (b) is an explanatory view of an enlarged cross section of the main part of the support structure. 同支持構造を用いたオートマチックトランスミッションの要部拡大断面説明図である。It is an enlarged cross-sectional explanatory view of the main part of an automatic transmission using the same support structure. 本発明に係る止め輪を用いた部品の支持構造の、第２実施形態を示しており、（ａ）は同支持構造を構成する止め輪の斜視図、（ｂ）は同支持構造の要部拡大断面説明図である。The second embodiment of the support structure of the part using the retaining ring according to the present invention is shown, (a) is a perspective view of the retaining ring constituting the support structure, and (b) is a main part of the support structure. It is an enlarged cross-sectional explanatory view. 本発明に係る止め輪を用いた部品の支持構造の、第３実施形態を示しており、（ａ）は同支持構造を構成する止め輪の斜視図、（ｂ）は同支持構造の要部拡大断面説明図である。A third embodiment of a support structure for a component using a retaining ring according to the present invention is shown, (a) is a perspective view of the retaining ring constituting the support structure, and (b) is a main part of the support structure. It is an enlarged cross-sectional explanatory view. 本発明に係る止め輪を用いた部品の支持構造の、第４実施形態を示しており、同支持構造を構成する止め輪の斜視図である。A fourth embodiment of a support structure for a component using a retaining ring according to the present invention is shown, and is a perspective view of a retaining ring constituting the support structure. （ａ）は同支持構造の要部拡大断面説明図、（ｂ）は（ａ）とは止め輪の受け面向きを変えた状態の要部拡大断面説明図である。(A) is an explanatory view of an enlarged cross section of a main part of the support structure, and (b) is an explanatory view of an enlarged cross section of a main part in a state where the direction of the receiving surface of the retaining ring is changed. 本発明に係る止め輪を用いた部品の支持構造の、第５実施形態を示しており、同支持構造を構成する止め輪の斜視図である。A fifth embodiment of a support structure for a component using a retaining ring according to the present invention is shown, and is a perspective view of a retaining ring constituting the support structure. （ａ）は同支持構造の要部拡大断面斜視図、（ｂ）は同支持構造の要部拡大断面説明図である。(A) is an enlarged cross-sectional perspective view of a main part of the support structure, and (b) is an explanatory view of an enlarged cross section of the main part of the support structure. 止め輪に荷重を付与した場合に、どの箇所に圧縮応力が大きく付与されるかを確認するための、解析ソフトによる解析結果を示しており、（ａ）は比較例１の止め輪の、解析結果の断面説明図、（ｂ）は比較例１の止め輪の、解析結果の断面説明図、（ｃ）は比較例２の止め輪の、解析結果の断面説明図、（ｄ）は比較例２の止め輪の、解析結果の断面説明図、（ｅ）は実施例の止め輪の、解析結果の断面説明図、（ｆ）は実施例の止め輪の、解析結果の断面説明図である。The analysis result by the analysis software for confirming which place a large compressive stress is applied when a load is applied to the retaining ring is shown, and (a) is the analysis of the retaining ring of Comparative Example 1. The cross-sectional explanatory view of the result, (b) is the cross-sectional explanatory view of the retaining ring of Comparative Example 1, (c) is the cross-sectional explanatory view of the retaining ring of Comparative Example 2, and (d) is the comparative example. 2 is a cross-sectional explanatory view of the analysis result of the retaining ring of No. 2, (e) is a cross-sectional explanatory view of the analysis result of the retaining ring of the example, and (f) is a cross-sectional explanatory view of the analysis result of the retaining ring of the example. ..

以下、図１〜３を参照して、本発明に係る止め輪を用いた部品の支持構造の、第１実施形態について説明する。 Hereinafter, the first embodiment of the support structure of the component using the retaining ring according to the present invention will be described with reference to FIGS. 1 to 3.

図１に示すように、この止め輪を用いた部品の支持構造（以下、単に「支持構造」ともいう）は、外側部品１０と、この外側部品１０の内側に配置される内側部品２０と、基部３５及び受け部４０からなる止め輪３０とから構成されている。 As shown in FIG. 1, the support structure of the component using the retaining ring (hereinafter, also simply referred to as “support structure”) includes the outer component 10, the inner component 20 arranged inside the outer component 10, and the inner component 20. It is composed of a retaining ring 30 including a base portion 35 and a receiving portion 40.

この実施形態における外側部品１０は、所定長さで延びる円筒状をなしており、その内周には、環状溝１１が形成されている。この実施形態の環状溝１１は、外側部品１０の軸方向Ａに沿って互いに平行に配置された内面１２，１３と、これらの内面１２，１３に直交する奥面１４とを有する、軸方向Ａに沿った断面形状が略コ字をなし、外側部品１０の内周に沿って環状に形成されている。なお、本発明における、環状溝や、止め輪の基部や受け部の「軸方向」とは、外側部品や内側部品の軸方向と同じ向きを意味しており、以下の説明では、これらを軸方向Ａとして説明する。 The outer component 10 in this embodiment has a cylindrical shape extending with a predetermined length, and an annular groove 11 is formed on the inner circumference thereof. The annular groove 11 of this embodiment has inner surfaces 12 and 13 arranged parallel to each other along the axial direction A of the outer component 10, and an inner surface 14 orthogonal to the inner surfaces 12 and 13 in the axial direction A. The cross-sectional shape along the line is substantially U-shaped, and is formed in an annular shape along the inner circumference of the outer component 10. In the present invention, the "axial direction" of the annular groove and the base and receiving portion of the retaining ring means the same direction as the axial direction of the outer component and the inner component, and in the following description, these are used as axes. This will be described as direction A.

なお、外側部品１０としては、図３に示すように、例えば、オートマチックトランスミッションに用いられ、ピストン６０やバネ組立体６５が組み込まれる、ケースなどが挙げられるが、この態様に限定されるものではない。また、外側部品の形状も、上記のような円筒状に限定されず、角筒状をなしていたり、内側部品２０を収容可能な凹部を設けた円柱状や角柱状等としたりしてもよく、内側部品２０を収容可能な形状であればよい。なお、図３におけるケースとして用いられる外側部品１０と、図１，２における外側部品１０とは、その形状が異なっているが、これは外側部品１０を分かりやすくするための便宜上のものである。 As shown in FIG. 3, the outer component 10 includes, for example, a case used in an automatic transmission and incorporating a piston 60 and a spring assembly 65, but is not limited to this embodiment. .. Further, the shape of the outer part is not limited to the cylindrical shape as described above, and may be a square cylinder shape, a columnar shape or a square columnar shape provided with a recess capable of accommodating the inner part 20. Any shape may be used as long as it can accommodate the inner component 20. The outer component 10 used as the case in FIG. 3 and the outer component 10 in FIGS. 1 and 2 have different shapes, but this is for convenience to make the outer component 10 easy to understand.

また、環状溝は、内側部品の外周に形成されていてもよい（これについては図８，９に示す第５実施形態で説明する）。また、環状溝の形状としては、上記のような略コ字状以外にも、例えば、一方の内面に段差を有していたり、或いは、テーパ面をなしていたりしてもよく、止め輪の基部を挿入可能であって、止め輪によって内側部品２０の荷重を受けられる形状であればよい。例えば、図２（ｂ）に示すように、環状溝１１としては、軸方向Ａの一端が開口して、軸方向Ａの他端に内面を設けたような、段状をなした形状としてもよい（図２（ｂ）の一点鎖線参照）。 Further, the annular groove may be formed on the outer periphery of the inner component (this will be described in the fifth embodiment shown in FIGS. 8 and 9). Further, as the shape of the annular groove, in addition to the substantially U-shape as described above, for example, one inner surface may have a step or a tapered surface, and the retaining ring may have a shape. The shape may be such that the base portion can be inserted and the load of the inner component 20 can be received by the retaining ring. For example, as shown in FIG. 2B, the annular groove 11 may have a stepped shape such that one end in the axial direction A is open and the inner surface is provided at the other end in the axial direction A. Good (see the alternate long and short dash line in FIG. 2B).

一方、この実施形態における内側部品２０は、外側部品１０の内径よりも小さい外径で形成された円筒状をなしており、外側部品１０内に挿入配置可能となっている。ただし、内側部品としては、角筒状や、円柱状、角柱状をなしていたり、円環状や角形環状の板体等であってもよく、外側部品の内側に一部又は全部を配置可能であればよい。なお、この実施形態における内側部品２０は、図３に示すように、オートマチックトランスミッションのケースとして用いられる外側部品１０の内側に配置される、クラッチを構成する複数の摩擦板となっている。ただし、適用箇所は、この態様に限定されない。なお、図３における摩擦板として用いられる内側部品２０と、図１，２における内側部品２０とは形状が異なっているが、これは内側部品２０を分かりやすくするための便宜上のものである。 On the other hand, the inner component 20 in this embodiment has a cylindrical shape formed with an outer diameter smaller than the inner diameter of the outer component 10, and can be inserted and arranged in the outer component 10. However, the inner part may be a square cylinder, a columnar shape, a prismatic shape, an annular plate, a rectangular annular plate, or the like, and a part or all of the inner part can be arranged inside the outer part. All you need is. As shown in FIG. 3, the inner component 20 in this embodiment is a plurality of friction plates constituting a clutch, which are arranged inside the outer component 10 used as a case of an automatic transmission. However, the place of application is not limited to this aspect. The inner component 20 used as the friction plate in FIG. 3 and the inner component 20 in FIGS. 1 and 2 have different shapes, but this is for convenience to make the inner component 20 easier to understand.

次に、止め輪３０について説明する。図１に示すように、この実施形態における止め輪３０は、周方向の一部が切欠き部３１によって切欠かれた略Ｃ字リング状をなしており、環状溝１１に挿入されて配置される基部３５と、該基部３５から環状溝１１の外側に突出する（ここでは外側部品１０の内周から突出する）受け部４０とを有している。 Next, the retaining ring 30 will be described. As shown in FIG. 1, the retaining ring 30 in this embodiment has a substantially C-shaped ring shape in which a part in the circumferential direction is cut out by a notch portion 31, and is inserted and arranged in the annular groove 11. It has a base portion 35 and a receiving portion 40 projecting from the base portion 35 to the outside of the annular groove 11 (here, projecting from the inner circumference of the outer component 10).

図２（ｂ）に示すように、この実施形態の場合、前記基部３５は、その軸方向Ａの長さが、環状溝１１の軸方向Ａに沿った長さ（対向する内面１２，１３間の長さ）よりも若干短く、かつ、同基部３５の軸方向Ａに直交する幅が、環状溝１１の奥面１４から開口縁部１５に至るまでの長さよりも若干短い、断面長方形状のリング状をなしている。なお、基部３５の、軸方向Ａに直交する幅は、環状溝１１の奥面１４から開口縁部１５に至るまでの長さと同一か、又は、それ以上の長さであってもよい。 As shown in FIG. 2B, in the case of this embodiment, the length of the base portion 35 in the axial direction A is the length along the axial direction A of the annular groove 11 (between the inner surfaces 12 and 13 facing each other). The width of the base portion 35 orthogonal to the axial direction A is slightly shorter than the length from the inner surface 14 of the annular groove 11 to the opening edge portion 15, and has a rectangular cross section. It has a ring shape. The width of the base portion 35 orthogonal to the axial direction A may be the same as or longer than the length from the inner surface 14 of the annular groove 11 to the opening edge portion 15.

一方、前記受け部４０は、基部３５の内周面であって、その軸方向Ａの中間位置から径方向内方に向けて突出し、基部３５の周方向全周に亘って形成された、略環状をなしたリブ形状を呈している。また、受け部４０は、基部３５の軸方向Ａに対して直交し、かつ、その軸方向Ａの長さが、基部３５の軸方向Ａの長さよりも短い長さで、突出している。その結果、この実施形態における止め輪３０は、基部３５と受け部４０とを併せて、軸方向Ａに沿った断面形状が略Ｔ字状をなしたＣ字リング状となっている。 On the other hand, the receiving portion 40 is an inner peripheral surface of the base portion 35, which protrudes inward in the radial direction from an intermediate position in the axial direction A, and is formed over the entire circumferential direction of the base portion 35. It has an annular rib shape. Further, the receiving portion 40 is orthogonal to the axial direction A of the base portion 35, and the length of the axial direction A is shorter than the length of the axial direction A of the base portion 35, and the receiving portion 40 projects. As a result, the retaining ring 30 in this embodiment has a C-shaped ring shape having a substantially T-shaped cross section along the axial direction A in combination with the base portion 35 and the receiving portion 40.

なお、受け部４０は、基部３５の外周面から突出していてもよく（これについては図８，９に示す第５実施形態で説明する）、その形状も特に限定されない。また、図２（ａ）に示すように、受け部４０と基部３５との連結部分である隅部３６はＲ状をなしており、応力集中が緩和されるようになっている。なお、止め輪３０は周知のばね鋼等により形成されており、また、基部３５と受け部４０とは一体的に設けられている。 The receiving portion 40 may protrude from the outer peripheral surface of the base portion 35 (this will be described in the fifth embodiment shown in FIGS. 8 and 9), and the shape thereof is not particularly limited. Further, as shown in FIG. 2A, the corner portion 36, which is a connecting portion between the receiving portion 40 and the base portion 35, has an R shape so that stress concentration is relaxed. The retaining ring 30 is made of a well-known spring steel or the like, and the base portion 35 and the receiving portion 40 are integrally provided.

そして、上記形状をなした止め輪３０の基部３５を、外側部品１０の環状溝１１に挿入することで、受け部４０が環状溝１１の外側に突出した状態で、環状溝１１に止め輪３０が装着される。このとき、この実施形態においては、上述したように、基部３５の軸方向Ａに直交する幅が、環状溝１１の奥面１４から開口縁部１５に至るまでの長さよりも短いため、図２（ｂ）に示すように、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａ（内径側の縁部）は、環状溝１１の開口縁部１５よりも、同環状溝１１の内側（環状溝１１の径方向奥方）に位置するようになっている。 Then, by inserting the base 35 of the retaining ring 30 having the above shape into the annular groove 11 of the outer component 10, the retaining ring 30 is inserted into the annular groove 11 in a state where the receiving portion 40 protrudes to the outside of the annular groove 11. Is installed. At this time, in this embodiment, as described above, the width orthogonal to the axial direction A of the base portion 35 is shorter than the length from the inner surface 14 of the annular groove 11 to the opening edge portion 15, and therefore, FIG. As shown in (b), the edge portion 37a (the edge portion on the inner diameter side) of the engaging surface 37 of the base portion 35 located on the receiving portion 40 side has an annular groove rather than the opening edge portion 15 of the annular groove 11. It is located inside the ring 11 (in the radial direction of the annular groove 11).

なお、基部３５の、軸方向Ａに直交する幅が、環状溝１１の奥面１４から開口縁部１５に至るまでの長さと同一の場合には、環状溝１１に基部３５を挿入して止め輪３０を装着した状態で、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａが、環状溝１１の開口縁部１５に整合するように位置する。また、基部３５の、軸方向Ａに直交する幅が、環状溝１１の奥面１４から開口縁部１５に至るまでの長さよりも長い場合には、環状溝１１に基部３５を挿入して止め輪３０を装着した状態で、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａが、環状溝１１の開口縁部１５よりも、外側部品１０の内側に突出するように位置する。 If the width of the base portion 35 orthogonal to the axial direction A is the same as the length from the inner surface 14 of the annular groove 11 to the opening edge portion 15, the base portion 35 is inserted into the annular groove 11 and stopped. With the ring 30 attached, the edge portion 37a of the engaging surface 37 of the base portion 35 located on the receiving portion 40 side is positioned so as to be aligned with the opening edge portion 15 of the annular groove 11. Further, when the width of the base portion 35 orthogonal to the axial direction A is longer than the length from the inner surface 14 of the annular groove 11 to the opening edge portion 15, the base portion 35 is inserted into the annular groove 11 and stopped. With the ring 30 attached, the edge portion 37a of the engaging surface 37 of the base portion 35, which is located on the receiving portion 40 side, protrudes inward of the outer component 10 from the opening edge portion 15 of the annular groove 11. To position.

上記状態で、外側部品１０の内側に内側部品２０を挿入して配置することで、図２（ａ），（ｂ）に示すように、止め輪３０の受け部４０の、軸方向一方に位置する受け面４１に支持されるようになっている。すなわち、受け部４０の、内側部品２０に対向する面が、本発明における「受け面」をなしている。このように、この実施形態では、環状溝を有さない内側部品２０が、止め輪３０の、受け部４０の受け面４１に支持される。なお、環状溝を有さない部品が外側部品１０の場合は、同外側部品１０が、受け部４０の受け面４１に支持される（これについては、図８，９に示す第５実施形態で説明する）。 By inserting and arranging the inner component 20 inside the outer component 10 in the above state, as shown in FIGS. 2 (a) and 2 (b), the receiving portion 40 of the retaining ring 30 is positioned on one side in the axial direction. It is supported by the receiving surface 41. That is, the surface of the receiving portion 40 facing the inner component 20 forms the "receiving surface" in the present invention. As described above, in this embodiment, the inner component 20 having no annular groove is supported by the receiving surface 41 of the receiving portion 40 of the retaining ring 30. When the component having no annular groove is the outer component 10, the outer component 10 is supported by the receiving surface 41 of the receiving portion 40 (this is the fifth embodiment shown in FIGS. 8 and 9). explain).

そして、上記のように、受け部４０の受け面４１に内側部品２０が支持された状態で、基部３５の、軸方向Ａに見て受け面４１とは反対側の面が、環状溝１１の対応する内面１３に当接する。この受け面４１とは反対側の面が、係合面３７をなしている。すなわち、内側部品（又は外側部品）によって、受け部の受け面に荷重が作用した状態で、基部の、軸方向に見て受け面とは反対側の面、言い換えると、基部の、荷重作用方向Ｆと同じ向きに位置し、環状溝の内面に当接する面が、本発明における「係合面」をなしている。 Then, as described above, in a state where the inner component 20 is supported by the receiving surface 41 of the receiving portion 40, the surface of the base portion 35 opposite to the receiving surface 41 when viewed in the axial direction A is the annular groove 11. It abuts on the corresponding inner surface 13. The surface opposite to the receiving surface 41 forms the engaging surface 37. That is, in a state where a load is applied to the receiving surface of the receiving portion by the inner component (or outer component), the surface of the base opposite to the receiving surface when viewed in the axial direction, in other words, the load acting direction of the base. The surface located in the same direction as F and in contact with the inner surface of the annular groove forms the "engagement surface" in the present invention.

更に、この止め輪３０においては、受け部４０の、軸方向に見て受け面４１とは反対側の面４３（以下、単に「反対面４３」ともいう）は、基部３５の係合面３７よりも、受け面４１側に位置している。すなわち、受け部４０の反対面４３は、基部３５の係合面３７よりも、受け部４０の軸方向Ａにおいて受け面４１側に、位置ずれして設けられている。この実施形態では、上述したように、受け部４０は、その軸方向Ａの長さが、基部３５の軸方向Ａに沿った長さよりも短い長さで、突出しているので、前記反対面４３が、基部３５の係合面３７に対して、軸方向Ａに見て受け面４１側に位置するようになっている。 Further, in the retaining ring 30, the surface 43 of the receiving portion 40 opposite to the receiving surface 41 when viewed in the axial direction (hereinafter, also simply referred to as “opposite surface 43”) is the engaging surface 37 of the base portion 35. It is located on the receiving surface 41 side. That is, the opposite surface 43 of the receiving portion 40 is provided so as to be displaced from the engaging surface 37 of the base portion 35 to the receiving surface 41 side in the axial direction A of the receiving portion 40. In this embodiment, as described above, since the length of the receiving portion 40 in the axial direction A is shorter than the length along the axial direction A of the base portion 35, the receiving portion 40 protrudes from the opposite surface 43. Is located on the receiving surface 41 side in the axial direction A with respect to the engaging surface 37 of the base 35.

なお、止め輪としては、上記形状に限定されるものではなく、基部及び受け部を有すると共に係合面を有し、かつ、受け部の、受け面とは反対側の面が、係合面よりも受け面側に位置する形状であれば、特に限定はされない（他の形状については、後述の実施形態で説明する）。 The retaining ring is not limited to the above shape, and the surface of the receiving portion opposite to the receiving surface is the engaging surface, which has a base portion and a receiving portion and also has an engaging surface. The shape is not particularly limited as long as it is located closer to the receiving surface (other shapes will be described in the embodiments described later).

次に、上記構造からなる、止め輪を用いた部品の支持構造の、作用効果について説明する。 Next, the action and effect of the support structure of the component using the retaining ring having the above structure will be described.

上述したように、この実施形態における支持構造は、例えば、図３に示すようなオートマチックトランスミッションに用いることができる。このオートマチックトランスミッションとしては、図３に示すように、外側部品１０の環状溝１１に止め輪３０の基部３５が挿入され、環状溝１１から突出した受け部４０の受け面４１によって、クラッチを構成する摩擦板をなす内側部品２０が複数重ねて配置された構造となっている。また、外側部品１０内には、ピストン６０が摺動可能に配置され、ピストン６０と内側部品２０との間には、複数のコイルバネを環状板に組付けてなるバネ組立体６５が配置固定されている。なお、ピストン６０は、バネ組立体６５によって、内側部品２０から離れる方向に付勢されており、油圧によりピストン６０がバネ組立体６５の付勢力に抗して押圧されると、同ピストン６０がクラッチを構成する摩擦板をなす内側部品２０に接続して、止め輪３０内側の回転要素７０に回転力が伝達されるようになっている。 As described above, the support structure in this embodiment can be used, for example, in an automatic transmission as shown in FIG. In this automatic transmission, as shown in FIG. 3, the base 35 of the retaining ring 30 is inserted into the annular groove 11 of the outer component 10, and the clutch is formed by the receiving surface 41 of the receiving portion 40 protruding from the annular groove 11. The structure is such that a plurality of inner parts 20 forming a friction plate are stacked and arranged. Further, a piston 60 is slidably arranged in the outer component 10, and a spring assembly 65 in which a plurality of coil springs are assembled to an annular plate is arranged and fixed between the piston 60 and the inner component 20. ing. The piston 60 is urged by the spring assembly 65 in a direction away from the inner component 20, and when the piston 60 is pressed against the urging force of the spring assembly 65 by the hydraulic pressure, the piston 60 is urged. The rotational force is transmitted to the rotating element 70 inside the retaining ring 30 by connecting to the inner component 20 forming the friction plate constituting the clutch.

そして、この支持構造においては、図２（ａ），（ｂ）に示すように、止め輪３０の受け部４０の、軸方向Ａに見て受け面４１とは反対側の反対面４３は、基部３５の、環状溝１１の内面１３に当接する係合面３７よりも、受け面４１側に位置している。そのため、内側部品２０からのスラスト荷重が、受け部４０の受け面４１側に作用した際に、受け部４０の、軸方向Ａに見て受け面４１とは反対側の反対面４３が、環状溝１１の開口縁部１５に当接することを防止して、受け部４０の、受け面４１及び受け面４１とは反対側の反対面４３に、圧痕を発生しにくくすることができるので、圧痕を起点として発生するひび割れを抑えて、止め輪３０の破損、特に受け部４０の破損を抑制することができる。なお、受け部４０の反対面４３が環状溝１１の開口縁部１５に当接しないため、受け部４０の受け面４１が、内側部品２０と環状溝１１の開口縁部１５とにより挟み込まれることが防止されるので、受け面４１にも圧痕が発生しにくくなる。この結果、止め輪３０を用いて、外側部品１０と内側部品２０とをしっかりと支持することができる。また、内側部品２０からのスラスト荷重によって、基部３５の係合面３７に圧痕が生じても、この係合面３７に生じた圧痕が、受け部４０の受け面４１に生じる圧痕につながって、ひびが伝播することを抑制できるので、圧痕を起点して受け部４０が破断されることを防止することができる。 Then, in this support structure, as shown in FIGS. 2A and 2B, the opposite surface 43 of the receiving portion 40 of the retaining ring 30 opposite to the receiving surface 41 when viewed in the axial direction A is formed. The base portion 35 is located closer to the receiving surface 41 than the engaging surface 37 that abuts on the inner surface 13 of the annular groove 11. Therefore, when the thrust load from the inner component 20 acts on the receiving surface 41 side of the receiving portion 40, the opposite surface 43 of the receiving portion 40, which is opposite to the receiving surface 41 when viewed in the axial direction A, is annular. It is possible to prevent the groove 11 from coming into contact with the opening edge portion 15 and to make it difficult for the receiving portion 40 to generate indentations on the receiving surface 41 and the opposite surface 43 on the opposite side of the receiving surface 41. It is possible to suppress the cracking that occurs starting from the above, and to suppress the damage of the retaining ring 30, particularly the damage of the receiving portion 40. Since the opposite surface 43 of the receiving portion 40 does not abut on the opening edge portion 15 of the annular groove 11, the receiving surface 41 of the receiving portion 40 is sandwiched between the inner component 20 and the opening edge portion 15 of the annular groove 11. Is prevented, so that indentations are less likely to occur on the receiving surface 41. As a result, the outer component 10 and the inner component 20 can be firmly supported by using the retaining ring 30. Further, even if an indentation is generated on the engaging surface 37 of the base 35 due to the thrust load from the inner component 20, the indentation generated on the engaging surface 37 is connected to the indentation generated on the receiving surface 41 of the receiving portion 40. Since it is possible to suppress the propagation of cracks, it is possible to prevent the receiving portion 40 from being broken at the starting point of the indentation.

また、図２（ｂ）に示すように、この実施形態においては、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａは、環状溝１１の開口縁部１５よりも、環状溝１１の内側に位置するように設けられている。そのため、外側部品又は内側部品（ここでは内側部品２０）からのスラスト荷重が、受け部４０の受け面４１側に作用した際に、基部３５の係合面３７を、環状溝１１の開口縁部１５に当たりにくくすることができ、受け面４１及び基部３５の係合面３７に圧痕を発生しにくくすることができる。なお、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａが、環状溝１１の開口縁部１５に位置するように設けられている場合にも、上記と同様の作用効果を得ることができる。 Further, as shown in FIG. 2B, in this embodiment, the edge portion 37a of the engaging surface 37 of the base portion 35 located on the receiving portion 40 side is larger than the opening edge portion 15 of the annular groove 11. It is provided so as to be located inside the annular groove 11. Therefore, when the thrust load from the outer component or the inner component (here, the inner component 20) acts on the receiving surface 41 side of the receiving portion 40, the engaging surface 37 of the base portion 35 is changed to the opening edge portion of the annular groove 11. It is possible to make it difficult to hit the 15 and to make it difficult to generate indentations on the receiving surface 41 and the engaging surface 37 of the base 35. Even when the edge portion 37a of the engaging surface 37 of the base portion 35 located on the receiving portion 40 side is provided so as to be located at the opening edge portion 15 of the annular groove 11, the same effect as described above is obtained. Can be obtained.

また、図２（ｂ）に示すように、環状溝１１の、軸方向Ａの一端が開口した段状をなしている場合に（図２（ｂ）の一点鎖線参照）、内側部品２０からのスラスト荷重が、受け部４０の受け面４１側に作用すると、基部３５が内側部品２０側に倒れこむように応力が付与されて、基部３５の、受け面４１側の内面３８が、内側部品２０の外面に当接するので、環状溝１１から止め輪３０を外れにくくして、止め輪３０の脱落を効果的に防止することができる。 Further, as shown in FIG. 2B, when the annular groove 11 has a stepped shape in which one end in the axial direction A is open (see the alternate long and short dash line in FIG. 2B), the inner component 20 is used. When a thrust load acts on the receiving surface 41 side of the receiving portion 40, stress is applied so that the base 35 collapses toward the inner component 20, and the inner surface 38 of the base 35 on the receiving surface 41 side becomes the inner component 20. Since it comes into contact with the outer surface, it is possible to prevent the retaining ring 30 from coming off from the annular groove 11 and effectively prevent the retaining ring 30 from falling off.

図４には、本発明に係る止め輪を用いた部品の支持構造の、第２実施形態が示されている。なお、前記実施形態と実質的に同一部分には、同符号を付してその説明を省略する。 FIG. 4 shows a second embodiment of a component support structure using a retaining ring according to the present invention. The same parts as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

この実施形態では、止め輪３０Ａの形状が、前記実施形態の止め輪３０と異なっている。図４（ａ），（ｂ）に示すように、この実施形態の止め輪３０Ａは、受け部４０の、軸方向Ａに見て受け面４１とは反対側の面４３ａ（以下、単に「反対面４３ａ」ともいう）は、基部３５の係合面３７側から、受け面４１側に向けて斜めに延びる傾斜面を有している。より具体的には、上記反対面４３ａは、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａから、受け面４１側に向けて斜め内方に傾斜した傾斜面が形成されており、この傾斜面全体が前記反対面４３ａをなしている。 In this embodiment, the shape of the retaining ring 30A is different from that of the retaining ring 30 of the above embodiment. As shown in FIGS. 4A and 4B, the retaining ring 30A of this embodiment is a surface 43a of the receiving portion 40 opposite to the receiving surface 41 when viewed in the axial direction A (hereinafter, simply "opposite"). The surface 43a) has an inclined surface that extends obliquely from the engaging surface 37 side of the base 35 toward the receiving surface 41 side. More specifically, the opposite surface 43a is formed with an inclined surface that is obliquely inwardly inclined toward the receiving surface 41 side from the edge portion 37a of the engaging surface 37 of the base portion 35 located on the receiving portion 40 side. The entire inclined surface forms the opposite surface 43a.

なお、傾斜面としては、例えば、図４（ｂ）の仮想線で示すように、基部３５の係合面３７の、受け部４０側に位置する縁部３７ａから、段部４３ｂを介して、受け面４１側に向けて傾斜した傾斜面を設け、この傾斜面を反対面４３ａとしてもよく、特に限定されない。 As the inclined surface, for example, as shown by the virtual line in FIG. 4B, from the edge portion 37a located on the receiving portion 40 side of the engaging surface 37 of the base portion 35, via the step portion 43b, An inclined surface inclined toward the receiving surface 41 side may be provided, and this inclined surface may be used as the opposite surface 43a, and is not particularly limited.

この第２実施形態においては、受け部４０の、軸方向Ａに見て受け面４１とは反対側の反対面４３ａは、基部３５の係合面３７側から、受け面４１側に向けて斜めに延びる傾斜面を有しているので、受け部４０の強度を向上することができ、受け部４０を破損しにくくすることができる。 In the second embodiment, the opposite surface 43a of the receiving portion 40, which is opposite to the receiving surface 41 when viewed in the axial direction A, is oblique from the engaging surface 37 side of the base 35 toward the receiving surface 41 side. Since it has an inclined surface extending to, the strength of the receiving portion 40 can be improved, and the receiving portion 40 can be made less likely to be damaged.

図５には、本発明に係る止め輪を用いた部品の支持構造の、第３実施形態が示されている。なお、前記実施形態と実質的に同一部分には、同符号を付してその説明を省略する。 FIG. 5 shows a third embodiment of a support structure for parts using a retaining ring according to the present invention. The same parts as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

この実施形態では、止め輪３０Ｂの形状が、前記実施形態の止め輪３０，３０Ａと異なっている。図５（ａ），（ｂ）に示すように、この実施形態の止め輪３０Ｂは、基部３５の外周面（受け部４０が突出した面とは反対側の面）であって、基部３５の軸方向Ａの中間位置から、環状溝１１の内側に向けて（基部３５の径方向外方に向けて）突出する環状の突部５０が突設されている。すなわち、受け部４０と突部５０とは、基部３５の軸方向Ａにおいて同一位置に設けられている。なお、突部は、受け部と同一位置に設けなくても、基部の軸方向Ａにおいて位置ずれして設けてもよい。 In this embodiment, the shape of the retaining ring 30B is different from that of the retaining rings 30 and 30A of the above embodiment. As shown in FIGS. 5A and 5B, the retaining ring 30B of this embodiment is an outer peripheral surface of the base portion 35 (a surface opposite to the surface on which the receiving portion 40 protrudes) of the base portion 35. An annular protrusion 50 projecting from the intermediate position in the axial direction A toward the inside of the annular groove 11 (outward in the radial direction of the base 35) is provided. That is, the receiving portion 40 and the protruding portion 50 are provided at the same position in the axial direction A of the base portion 35. The protrusion may not be provided at the same position as the receiving portion, but may be provided so as to be displaced in the axial direction A of the base portion.

また、環状溝１１の内側、ここでは、内面１３に対向する内面１２の奥方には、内面１３側に向けて突出する段部１７が設けられており、この段部１７の突出端面が、支持面１８をなしている。そして、図５（ｂ）に示すように、環状溝１１に止め輪３０Ｂの基部３５が挿入配置された状態で、環状溝１１の奥方の上記支持面１８に、突部５０の、軸方向Ａに見て受け面４１側に位置する面５１が、当接するようになっている。 Further, inside the annular groove 11, here, behind the inner surface 12 facing the inner surface 13, a step portion 17 projecting toward the inner surface 13 side is provided, and the projecting end surface of the step portion 17 supports. It forms surface 18. Then, as shown in FIG. 5B, with the base portion 35 of the retaining ring 30B inserted and arranged in the annular groove 11, the protrusion 50 is axially A on the support surface 18 at the back of the annular groove 11. The surface 51 located on the receiving surface 41 side is in contact with the surface 51.

この第３実施形態においては、上述したように、基部３５の外周面に、環状溝１１の内側に突出する突部５０を設け、環状溝１１の内側に、突部５０の軸方向Ａに見て受け面４１側に位置する面５１が、当接する支持面１８が形成されているので、受け部４０の受け面４１側にスラスト荷重が付与されると、基部３５の突部５０の、軸方向Ａに見て受け面４１側に位置する面５１が、環状溝１１の奥方に形成された支持面１８に当接して、止め輪３０Ｂにかかる回転モーメントＭを受けることとなる（図５（ｂ）の矢印参照）。その結果、止め輪３０Ｂにかかるスラスト荷重を、受け部４０の受け面４１と、基部３５の係合面３７と、突部５０の、環状溝１１の支持面１８に当接する面５１とで、分散させて受け止めることができ、止め輪３０Ｂの破損をより効果的に抑制することができる。 In the third embodiment, as described above, a protrusion 50 projecting inside the annular groove 11 is provided on the outer peripheral surface of the base 35, and the protrusion 50 is seen inside the annular groove 11 in the axial direction A of the protrusion 50. Since the support surface 18 that abuts the surface 51 located on the receiving surface 41 side is formed, when a thrust load is applied to the receiving surface 41 side of the receiving portion 40, the shaft of the protrusion 50 of the base 35 The surface 51 located on the receiving surface 41 side in the direction A abuts on the support surface 18 formed at the back of the annular groove 11 and receives the rotational moment M applied to the retaining ring 30B (FIG. 5 (FIG. 5). b) See the arrow). As a result, the thrust load applied to the retaining ring 30B is applied to the receiving surface 41 of the receiving portion 40, the engaging surface 37 of the base portion 35, and the surface 51 of the protruding portion 50 that abuts on the support surface 18 of the annular groove 11. It can be dispersed and received, and damage to the retaining ring 30B can be suppressed more effectively.

また、上記突部を、本発明における「受け部」として用いてもよい。この場合には、後述する第５実施形態（図８及び図９参照）のように、内側部品２０の外周に環状溝２１が形成されている場合にも対応することができ、一部品で２つの態様（外側部品に環状溝が形成された態様、又は、内側部品に環状溝が形成された態様）に柔軟に対応することができ、利便性を向上させることができる。 Moreover, the said protrusion may be used as a "receiving part" in this invention. In this case, as in the fifth embodiment (see FIGS. 8 and 9) described later, it is possible to deal with the case where the annular groove 21 is formed on the outer periphery of the inner component 20, and one component is 2 It is possible to flexibly correspond to one mode (a mode in which an annular groove is formed in an outer component or a mode in which an annular groove is formed in an inner component), and convenience can be improved.

図６及び図７には、本発明に係る止め輪を用いた部品の支持構造の、第４実施形態が示されている。なお、前記実施形態と実質的に同一部分には、同符号を付してその説明を省略する。 6 and 7 show a fourth embodiment of a component support structure using a retaining ring according to the present invention. The same parts as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

この実施形態では、止め輪３０Ｃの形状が、前記実施形態の止め輪３０，３０Ａ，３０Ｂと異なっている。すなわち、図６及び図７に示すように、この実施形態の止め輪３０Ｃは、受け部４０が、基部３５の軸方向Ａの一端側に偏倚して設けられている。 In this embodiment, the shape of the retaining ring 30C is different from that of the retaining rings 30, 30A and 30B of the above embodiment. That is, as shown in FIGS. 6 and 7, in the retaining ring 30C of this embodiment, the receiving portion 40 is provided so as to be biased toward one end side in the axial direction A of the base portion 35.

このように、この実施形態においては、受け部４０は、基部３５の軸方向Ａの一端側に偏倚して設けられているので、例えば、図７（ａ）に示すように、受け部４０の受け面４１を、環状溝１１の内面１３（基部３５の係合面３７が当接する面）から離反した向きで、基部３５を環状溝１１に挿入配置したり、或いは、図７（ｂ）に示すように、受け部４０の受け面４１を、環状溝１１の内面１３に近接した向きで、基部３５を環状溝１１に挿入配置したりして、受け部４０の向きを変えることができる。その結果、受け面４１の位置を適宜変更することができ、一つの止め輪３０Ｄによって、２パターンの受け面４１の位置を提供することができる。なお、図６に示すように、受け部４０の受け面４１と、その反対側に位置する反対面４３とは、基部３５を環状溝１１に挿入配置した状態で、適宜入れ替わるようになっている。 As described above, in this embodiment, the receiving portion 40 is provided so as to be biased toward one end side of the base portion 35 in the axial direction A. Therefore, for example, as shown in FIG. 7A, the receiving portion 40 of the receiving portion 40. The base portion 35 may be inserted into the annular groove 11 in a direction away from the inner surface 13 of the annular groove 11 (the surface with which the engaging surface 37 of the base portion 35 abuts), or as shown in FIG. 7B. As shown, the direction of the receiving portion 40 can be changed by inserting the receiving surface 41 of the receiving portion 40 into the annular groove 11 in a direction close to the inner surface 13 of the annular groove 11. As a result, the position of the receiving surface 41 can be changed as appropriate, and one retaining ring 30D can provide the positions of the receiving surface 41 in two patterns. As shown in FIG. 6, the receiving surface 41 of the receiving portion 40 and the opposite surface 43 located on the opposite side thereof are appropriately interchanged with the base portion 35 inserted and arranged in the annular groove 11. ..

図８及び図９には、本発明に係る止め輪を用いた部品の支持構造の、第５実施形態が示されている。なお、前記実施形態と実質的に同一部分には、同符号を付してその説明を省略する。 8 and 9 show a fifth embodiment of a component support structure using a retaining ring according to the present invention. The same parts as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

この実施形態では、内側部品２０の外周に、内側部品２０の軸方向Ａに沿って互いに平行に配置された内面２２，２３と、これらの内面２２，２３に直交する奥面２４とを有する略コ字をなした環状溝２１が形成されている。この環状溝２１に対応して、止め輪３０Ｄを構成する基部３５が、内側部品２０外周の環状溝２１に挿入配置される。また、止め輪３０Ｄの受け部４０が、基部３５の外周面であって、その軸方向Ａの中間位置から径方向外方に向けて突出している。そして、前記基部３５が環状溝２１に挿入された状態で、図９（ａ），（ｂ）に示すように、受け部４０は環状溝１１の外側に突出するようになっている（ここでは内側部品２０の外周から外側部品１０に向けて突出する）。すなわち、この実施形態においては、受け部４０の、外側部品１０に対向する面が、本発明における「受け面」をなしている。 In this embodiment, the outer periphery of the inner component 20 has inner surfaces 22 and 23 arranged parallel to each other along the axial direction A of the inner component 20, and an inner surface 24 orthogonal to the inner surfaces 22 and 23. An annular groove 21 having a U shape is formed. Corresponding to the annular groove 21, the base portion 35 constituting the retaining ring 30D is inserted and arranged in the annular groove 21 on the outer periphery of the inner component 20. Further, the receiving portion 40 of the retaining ring 30D is an outer peripheral surface of the base portion 35 and protrudes outward in the radial direction from an intermediate position in the axial direction A thereof. Then, with the base portion 35 inserted into the annular groove 21, the receiving portion 40 projects to the outside of the annular groove 11 as shown in FIGS. 9A and 9B (here). (Protrudes from the outer circumference of the inner component 20 toward the outer component 10). That is, in this embodiment, the surface of the receiving portion 40 facing the outer component 10 forms the "receiving surface" in the present invention.

この支持構造においては、図９（ａ），（ｂ）に示すように、内側部品２０外周の環状溝２１に、止め輪３０Ｄの基部３５を挿入配置した状態で、外側部品１０からのスラスト荷重が受け部４０の受け面４１側に作用すると、受け部４０の、軸方向Ａに見て受け面４１とは反対側の反対面４３が、環状溝２１の内面２３の開口縁部２３ａに当接することを防止して、受け面４１及び受け部４０の反対面４３に圧痕を発生しにくくして、止め輪３０Ｄの破損を抑制することができる。 In this support structure, as shown in FIGS. 9A and 9B, the thrust load from the outer component 10 is placed in a state where the base 35 of the retaining ring 30D is inserted and arranged in the annular groove 21 on the outer periphery of the inner component 20. Acts on the receiving surface 41 side of the receiving portion 40, and the opposite surface 43 of the receiving portion 40 opposite to the receiving surface 41 when viewed in the axial direction A hits the opening edge portion 23a of the inner surface 23 of the annular groove 21. It is possible to prevent contact with each other, make it difficult for indentations to occur on the receiving surface 41 and the opposite surface 43 of the receiving portion 40, and suppress damage to the retaining ring 30D.

各種形状をなした止め輪の受け面に、スラスト荷重を作用させたときに、受け面及び受け面とは反対側の面の、どの箇所に圧縮応力が大きく付与されるかを確認するため、解析ソフトにより解析を行った。 In order to confirm which part of the receiving surface and the surface opposite to the receiving surface when a thrust load is applied to the receiving surface of the retaining ring having various shapes, a large compressive stress is applied. The analysis was performed using analysis software.

（実施例）
図１及び図２に示す第１実施形態と同様の、略断面Ｔ字状をなした実施例の止め輪を製造した（図１０（ｅ）参照）。受け部４０の厚さは、３．０ｍｍである。(Example)
Similar to the first embodiment shown in FIGS. 1 and 2, a retaining ring of an embodiment having a substantially T-shaped cross section was manufactured (see FIG. 10 (e)). The thickness of the receiving portion 40 is 3.0 mm.

（比較例１）
図１０（ａ）に示す、断面長方形状のＣ字リング状をなした、比較例１の止め輪を製造した。その厚さは、３．０ｍｍである。(Comparative Example 1)
A retaining ring of Comparative Example 1 having a C-shaped ring with a rectangular cross section shown in FIG. 10A was manufactured. Its thickness is 3.0 mm.

（比較例２）
図１０（ｃ）に示す、略断面Ｌ字状のＣ字リング状をなした、比較例２の止め輪を製造した。環状溝１１の外側に突出する部分の厚さは、３．０ｍｍである。(Comparative Example 2)
A retaining ring of Comparative Example 2 having a C-shaped ring shape having a substantially L-shaped cross section shown in FIG. 10 (c) was manufactured. The thickness of the portion of the annular groove 11 protruding outward is 3.0 mm.

（試験方法）
解析ソフト「ＡＮＳＹＳ」（米国ＡＮＳＹＳ，Ｉｎｃ製）を用いて、解析を行った。すなわち、外側部品１０の内周に環状溝１１を形成し、この環状溝１１に、上記実施例、比較例１，２を挿入配置して、環状溝１１の外側に突出した部分の受け面に、内側部品２０を載置した。この状態で、内側部品２０に１０００００Ｎの荷重を作用させて、実施例、比較例１，２の、受け面及び受け面とは反対側の面の、どの箇所に圧縮応力が大きく作用するかを確認した。その箇所を符号「Ｓ」で示す。(Test method)
The analysis was performed using the analysis software "ANSYS" (manufactured by Ansys, Inc., USA). That is, an annular groove 11 is formed on the inner circumference of the outer component 10, and the above-described Examples and Comparative Examples 1 and 2 are inserted and arranged in the annular groove 11 to form a receiving surface of a portion protruding outward of the annular groove 11. , The inner part 20 was placed. In this state, a load of 100,000 N is applied to the inner component 20 to determine which part of Example and Comparative Examples 1 and 2 on the receiving surface and the surface opposite to the receiving surface the large compressive stress acts. confirmed. The location is indicated by the symbol "S".

その結果、図１０（ｂ）に示すように、比較例１の止め輪では、受け面側に、最も大きな圧縮応力（１８５８．８ＭＰａ）が付与されることが分かり、また、受け面とは反対側の面にも大きな圧縮応力が付与されることが分かった。一方、図１０（ｄ）に示すように、比較例２の止め輪では、受け面側に、最も大きな圧縮応力（２１５３．１ＭＰａ）が付与されることが分かり、また、受け面とは反対側の面にも大きな圧縮応力が付与されることが分かった。これらに対して、図１０（ｆ）に示すように、実施例の止め輪においては、受け面側に、最も大きな圧縮応力（７８７．７８ＭＰａ）が付与されることが分かった。なお、実施例の止め輪では、図１０（ｆ）では、受け面とは反対側の面にも、圧縮応力が付与されるが、受け面に付与される圧縮応力に比べて低い値であった。以上のように、実施例の止め輪では、受け面及び受け面とは反対側の面に付与される圧縮応力は、比較例１，２の止め輪に比べて低いことが分かり、圧痕が生じにくいことが分かった。 As a result, as shown in FIG. 10B, it was found that in the retaining ring of Comparative Example 1, the largest compressive stress (1858.8 MPa) was applied to the receiving surface side, and the opposite to the receiving surface. It was found that a large compressive stress was also applied to the side surface. On the other hand, as shown in FIG. 10 (d), in the retaining ring of Comparative Example 2, it was found that the largest compressive stress (2153.1 MPa) was applied to the receiving surface side, and the side opposite to the receiving surface. It was found that a large compressive stress was also applied to the surface of. On the other hand, as shown in FIG. 10 (f), it was found that the largest compressive stress (787.78 MPa) was applied to the receiving surface side in the retaining ring of the example. In the retaining ring of the embodiment, in FIG. 10 (f), the compressive stress is also applied to the surface opposite to the receiving surface, but the value is lower than the compressive stress applied to the receiving surface. It was. As described above, in the retaining ring of the embodiment, it was found that the compressive stress applied to the receiving surface and the surface opposite to the receiving surface was lower than that of the retaining rings of Comparative Examples 1 and 2, and indentation was generated. It turned out to be difficult.

なお、本発明は、上述した実施形態に限定されるものではなく、本発明の要旨の範囲内で、各種の変形実施形態が可能であり、そのような実施形態も本発明の範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention. ..

１０外側部品
１１環状溝
１２，１３内面
１５開口縁部
１７段部
１８支持面
２０内側部品
２１環状溝
２２，２３内面
２３ａ開口縁部
３０，３０Ａ，３０Ｂ，３０Ｃ，３０Ｄ止め輪
３５基部
３７係合面
３７ａ縁部
４０受け部
４１受け面
４３，４３ａ受け部の、軸方向に見て受け面とは反対側の面（反対面）
４３ｂ段部
４７係合面
５０突部10 Outer part 11 Circular groove 12, 13 Inner surface 15 Opening edge 17 Stepped part 18 Support surface 20 Inner part 21 Circular groove 22, 23 Inner surface 23a Opening edge 30, 30A, 30B, 30C, 30D Retaining ring 35 Base 37 Engagement Surface 37a Edge 40 Receiving portion 41 Retaining surface 43, 43a The surface of the receiving portion opposite to the receiving surface when viewed in the axial direction (opposite surface).
43b Step 47 Engagement surface 50 Protrusion

Claims

オートマチックトランスミッションに用いられる、止め輪を用いた部品の支持構造であって、
前記オートマチックトランスミッションのケースをなす外側部品と、
該外側部品の内側に配置され、クラッチを構成する摩擦板をなす内側部品と、
前記外側部品の内周又は前記内側部品の外周に形成された環状溝と、
前記環状溝に挿入される基部及び該基部から前記環状溝の外側に突出する受け部を有する止め輪とを備え、
前記外側部品の内側には、ピストンがスライド可能に配置されており、該ピストンが油圧によりスライドして、前記内側部品を押圧するように構成されており、
前記外側部品又は前記内側部品のうち、前記環状溝を有さない部品は、前記受け部の、軸方向一方に位置する受け面に支持されており、
前記基部の、軸方向に見て前記受け面とは反対側の面は、前記環状溝の対応する内面に当接する係合面をなしており、
前記受け部の、軸方向に見て前記受け面とは反対側の面は、前記係合面よりも前記受け面側に位置しており、
前記受け部は、前記基部の周方向全周に亘って形成されており、
前記受け面が、前記基部の軸方向に対して直交し、前記受け面とは反対側の面は、前記基部の前記係合面側から、前記受け面側に向けて斜めに廷び、かつ、前記基部の周方向全周に亘って形成された傾斜面を有していることを特徴とする止め輪を用いた部品の支持構造。It is a support structure for parts using retaining rings used in automatic transmissions.
The outer parts that form the case of the automatic transmission and
An inner component that is arranged inside the outer component and forms a friction plate that constitutes a clutch, and an inner component that forms a friction plate.
An annular groove formed on the inner circumference of the outer component or the outer circumference of the inner component,
It is provided with a base portion to be inserted into the annular groove and a retaining ring having a receiving portion protruding from the base portion to the outside of the annular groove.
A piston is slidably arranged inside the outer component, and the piston is configured to slide hydraulically to press the inner component.
Among the outer parts or the inner parts, the parts having no annular groove are supported by the receiving surface of the receiving portion located on one side in the axial direction.
The surface of the base opposite to the receiving surface when viewed in the axial direction forms an engaging surface that abuts on the corresponding inner surface of the annular groove.
The surface of the receiving portion opposite to the receiving surface when viewed in the axial direction is located on the receiving surface side with respect to the engaging surface.
The receiving portion is formed over the entire circumference of the base portion in the circumferential direction.
The receiving surface is orthogonal to the axial direction of the base, and the surface opposite to the receiving surface is obliquely formed from the engaging surface side of the base toward the receiving surface side. , A support structure for parts using a retaining ring, which has an inclined surface formed over the entire circumference of the base portion in the circumferential direction.

オートマチックトランスミッションに用いられる、止め輪を用いた部品の支持構造であって、
前記オートマチックトランスミッションのケースをなす外側部品と、
該外側部品の内側に配置され、クラッチを構成する摩擦板をなす内側部品と、
前記外側部品の内周又は前記内側部品の外周に形成された環状溝と、
前記環状溝に挿入される基部及び該基部から前記環状溝の外側に突出する受け部を有する止め輪とを備え、
前記外側部品の内側には、ピストンがスライド可能に配置されており、該ピストンが油圧によりスライドして、前記内側部品を押圧するように構成されており、
前記外側部品又は前記内側部品のうち、前記環状溝を有さない部品は、前記受け部の、軸方向一方に位置する受け面に支持されており、
前記基部の、軸方向に見て前記受け面とは反対側の面は、前記環状溝の対応する内面に当接する係合面をなしており、
前記受け部の、軸方向に見て前記受け面とは反対側の面は、前記係合面よりも前記受け面側に位置しており、
前記基部の、前記受け部が突出した面とは反対側の面には、前記基部の軸方向の途中の位置から、前記環状溝の内側に突出する突部が設けられており、
前記環状溝の内側には、前記突部の、軸方向に見て前記受け面側に位置する面が、当接可能な支持面が形成されていることを特徴とする止め輪を用いた部品の支持構造。It is a support structure for parts using retaining rings used in automatic transmissions.
The outer parts that form the case of the automatic transmission and
An inner component that is arranged inside the outer component and forms a friction plate that constitutes a clutch, and an inner component that forms a friction plate.
An annular groove formed on the inner circumference of the outer component or the outer circumference of the inner component,
It is provided with a base portion to be inserted into the annular groove and a retaining ring having a receiving portion protruding from the base portion to the outside of the annular groove.
A piston is slidably arranged inside the outer component, and the piston is configured to slide hydraulically to press the inner component.
Among the outer parts or the inner parts, the parts having no annular groove are supported by the receiving surface of the receiving portion located on one side in the axial direction.
The surface of the base opposite to the receiving surface when viewed in the axial direction forms an engaging surface that abuts on the corresponding inner surface of the annular groove.
The surface of the receiving portion opposite to the receiving surface when viewed in the axial direction is located on the receiving surface side with respect to the engaging surface.
On the surface of the base portion opposite to the surface on which the receiving portion protrudes, a protrusion protruding inward of the annular groove is provided from a position in the middle of the axial direction of the base portion.
A component using a retaining ring, characterized in that a support surface is formed on the inside of the annular groove so that the surface of the protrusion, which is located on the receiving surface side when viewed in the axial direction, can come into contact with the surface. Support structure.

オートマチックトランスミッションに用いられる、止め輪を用いた部品の支持構造であって、
前記オートマチックトランスミッションのケースをなす外側部品と、
該外側部品の内側に配置され、クラッチを構成する摩擦板をなす内側部品と、
前記外側部品の内周又は前記内側部品の外周に形成された環状溝と、
前記環状溝に挿入される基部及び該基部から前記環状溝の外側に突出する受け部を有する止め輪とを備え、
前記外側部品の内側には、ピストンがスライド可能に配置されており、該ピストンが油圧によりスライドして、前記内側部品を押圧するように構成されており、
前記外側部品又は前記内側部品のうち、前記環状溝を有さない部品は、前記受け部の、軸方向一方に位置する受け面に支持されており、
前記基部の、軸方向に見て前記受け面とは反対側の面は、前記環状溝の対応する内面に当接する係合面をなしており、
前記受け部の、軸方向に見て前記受け面とは反対側の面は、前記係合面よりも前記受け面側に位置しており、
前記受け面が、前記基部の軸方向に対して直交し、
前記基部の前記係合面の、前記受け部側に位置する縁部は、前記環状溝の開口縁部に位置するか、又は、同開口縁部よりも、前記環状溝の内側に位置するように設けられており、
前記受け部は、前記基部の周方向全周に亘って形成されており、その軸方向長さが、前記基部の軸方向長さよりも短い長さで、径方向内方へ突出していることを特徴とする記載の止め輪を用いた部品の支持構造。It is a support structure for parts using retaining rings used in automatic transmissions.
The outer parts that form the case of the automatic transmission and
An inner component that is arranged inside the outer component and forms a friction plate that constitutes a clutch, and an inner component that forms a friction plate.
An annular groove formed on the inner circumference of the outer component or the outer circumference of the inner component,
It is provided with a base portion to be inserted into the annular groove and a retaining ring having a receiving portion protruding from the base portion to the outside of the annular groove.
A piston is slidably arranged inside the outer component, and the piston is configured to slide hydraulically to press the inner component.
Among the outer parts or the inner parts, the parts having no annular groove are supported by the receiving surface of the receiving portion located on one side in the axial direction.
The surface of the base opposite to the receiving surface when viewed in the axial direction forms an engaging surface that abuts on the corresponding inner surface of the annular groove.
The surface of the receiving portion opposite to the receiving surface when viewed in the axial direction is located on the receiving surface side with respect to the engaging surface.
The receiving surface is orthogonal to the axial direction of the base,
The edge portion of the engaging surface of the base portion located on the receiving portion side is located at the opening edge portion of the annular groove, or is located inside the annular groove rather than the opening edge portion. It is provided in
The receiving portion is formed over the entire circumference of the base portion in the circumferential direction, and the axial length thereof is shorter than the axial length of the base portion and projects inward in the radial direction. Support structure of parts using the retaining ring described as a feature.

オートマチックトランスミッションに用いられる、止め輪を用いた部品の支持構造であって、
前記オートマチックトランスミッションのケースをなす外側部品と、
該外側部品の内側に配置され、クラッチを構成する摩擦板をなす内側部品と、
前記外側部品の内周又は前記内側部品の外周に形成された環状溝と、
前記環状溝に挿入される基部及び該基部から前記環状溝の外側に突出する受け部を有する止め輪とを備え、
前記外側部品の内側には、ピストンがスライド可能に配置されており、該ピストンが油圧によりスライドして、前記内側部品を押圧するように構成されており、
前記外側部品又は前記内側部品のうち、前記環状溝を有さない部品は、前記受け部の、軸方向一方に位置する受け面に支持されており、
前記基部の、軸方向に見て前記受け面とは反対側の面は、前記環状溝の対応する内面に当接する係合面をなしており、
前記受け部の、軸方向に見て前記受け面とは反対側の面は、前記係合面よりも前記受け面側に位置しており、
前記受け部は、前記基部の軸方向の一端側に偏倚して設けられており、
前記受け部の、前記基部の軸方向の一端側の面が、前記受け面とは反対側の面となる場合であっても、該一端側の面は、前記係合面よりも、前記基部の軸方向の他端側に位置することを特徴とする止め輪を用いた部品の支持構造。It is a support structure for parts using retaining rings used in automatic transmissions.
The outer parts that form the case of the automatic transmission and
An inner component that is arranged inside the outer component and forms a friction plate that constitutes a clutch, and an inner component that forms a friction plate.
An annular groove formed on the inner circumference of the outer component or the outer circumference of the inner component,
It is provided with a base portion to be inserted into the annular groove and a retaining ring having a receiving portion protruding from the base portion to the outside of the annular groove.
A piston is slidably arranged inside the outer component, and the piston is configured to slide hydraulically to press the inner component.
Among the outer parts or the inner parts, the parts having no annular groove are supported by the receiving surface of the receiving portion located on one side in the axial direction.
The surface of the base opposite to the receiving surface when viewed in the axial direction forms an engaging surface that abuts on the corresponding inner surface of the annular groove.
The surface of the receiving portion opposite to the receiving surface when viewed in the axial direction is located on the receiving surface side with respect to the engaging surface.
The receiving portion is provided so as to be biased toward one end side in the axial direction of the base portion.
Even if the surface of the receiving portion on one end side in the axial direction of the base portion is the surface opposite to the receiving surface, the surface on the one end side is more than the engaging surface. A component support structure using a retaining ring, which is located on the other end side in the axial direction of the.