JP2016080112A - Seal ring - Google Patents

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JP2016080112A
JP2016080112A JP2014213934A JP2014213934A JP2016080112A JP 2016080112 A JP2016080112 A JP 2016080112A JP 2014213934 A JP2014213934 A JP 2014213934A JP 2014213934 A JP2014213934 A JP 2014213934A JP 2016080112 A JP2016080112 A JP 2016080112A
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seal ring
vertical surface
parallel
inner peripheral
edge
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JP6461552B2 (en
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純 深田
Jun Fukada
純 深田
直久 大矢
naohisa Oya
直久 大矢
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Riken Corp
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Riken Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a seal ring having high sealability and sufficient assemblability.SOLUTION: A seal ring is annularly formed with centering on a center axis. The seal ring includes a first end and a second end. The first end includes a first vertical surface extending vertically to the center axis, a first parallel surface extending in parallel with the center axis from a first edge on an inner peripheral side of the first vertical surface, and a first engagement part provided on the first vertical surface with an interval from the first edge. The second end includes a second vertical surface extending vertically to the center axis and brought into surface contact with the first vertical surface, a second parallel surface extending in parallel with the center axis from a second edge on an inner peripheral side of the second vertical surface and brought into surface contact with the first parallel surface, and a second engagement part provided on the second vertical surface with an interval from the second edge and engaged with the first engagement part.SELECTED DRAWING: Figure 2

Description

本発明は、油圧機器に利用可能なシールリングに関する。   The present invention relates to a seal ring that can be used in hydraulic equipment.

自動車用の自動変速機などの油圧機器では、オイル漏れを防止するためにシールリングが用いられる。シールリングは、例えば、シャフトがハウジングに挿通される構成を有する油圧機器において、シャフトとハウジングとの間を封止する。   In hydraulic equipment such as an automatic transmission for automobiles, a seal ring is used to prevent oil leakage. The seal ring seals between the shaft and the housing in, for example, a hydraulic device having a configuration in which the shaft is inserted into the housing.

シールリングは、合口部を備え、その外径が若干の変化を生ずることができるように構成されている。力が付与されていない自由状態のシールリングでは、合口部が少し開いている。   The seal ring includes an abutment portion and is configured so that the outer diameter thereof can slightly change. In the seal ring in a free state where no force is applied, the joint part is slightly opened.

シールリングを油圧機器に組み付けるためには、まず、シールリングをシャフトの溝部に装着する。そして、シールリングが装着されたシャフトを、シールリングをその外径がハウジングの内周面よりやや小さくなるように変形させながら、ハウジングに挿通させる。   In order to assemble the seal ring to the hydraulic equipment, first, the seal ring is mounted in the groove portion of the shaft. Then, the shaft on which the seal ring is mounted is inserted into the housing while the seal ring is deformed so that its outer diameter is slightly smaller than the inner peripheral surface of the housing.

油圧機器に組み付けられたシールリングは、自由状態よりも外径が小さくなっているため、自由状態に戻ろうとする弾性力によってハウジングの内周面に密着する。これにより、シールリングとハウジングとの間をオイルが通過できなくなる。   Since the outer diameter of the seal ring assembled in the hydraulic device is smaller than that in the free state, the seal ring is brought into close contact with the inner peripheral surface of the housing by an elastic force for returning to the free state. As a result, oil cannot pass between the seal ring and the housing.

このようなシールリングでは、自由状態の外径を大きくするほど、ハウジング内で自由状態に戻ろうとする弾性力が大きくなるため、ハウジングの内周面に対する密着力が増大する。これにより、シールリングとハウジングとの間のシール性が向上する。   In such a seal ring, as the outer diameter in the free state is increased, the elastic force for returning to the free state in the housing increases, so that the adhesion force to the inner peripheral surface of the housing increases. Thereby, the sealing performance between the seal ring and the housing is improved.

ところが、自由状態のシールリングの外径がハウジングの内周面の径よりも大幅に大きいと、シールリングがハウジング内に入りにくくなる。これにより、シールリングを装着したシャフトをハウジングにスムーズに挿通させることができなくなるため、組み付け性が悪化する。   However, when the outer diameter of the seal ring in the free state is significantly larger than the diameter of the inner peripheral surface of the housing, the seal ring is difficult to enter the housing. As a result, the shaft on which the seal ring is mounted cannot be smoothly inserted into the housing, so that the assembling property is deteriorated.

特許文献１には、カギ状に形成された合口部を相互に係合させることにより自由状態の外径が小さく保たれるように構成されたシールリングが開示されている。このシールリングでは、良好な組み付け性を維持しつつ、ハウジングの内周面に対する密着力を増大させることができる。   Patent Document 1 discloses a seal ring that is configured such that the outer diameter in a free state can be kept small by engaging a joint formed in a key shape with each other. With this seal ring, it is possible to increase the adhesion to the inner peripheral surface of the housing while maintaining good assembly.

特開平６−２１３３２２号公報JP-A-6-213322

しかしながら、カギ状に形成された合口部を有するシールリングでは、合口部に隙間が発生するため、合口部においてオイル漏れが発生しやすくなる。したがって、このようなシールリングではシール性が低下する。   However, in a seal ring having an abutting portion formed in a key shape, a gap is generated at the abutting portion, so that oil leakage is likely to occur at the abutting portion. Accordingly, the sealing performance is lowered with such a seal ring.

以上のような事情に鑑み、本発明の目的は、高いシール性、及び良好な組み付け性を兼ね備えたシールリングを提供することにある。   In view of the circumstances as described above, an object of the present invention is to provide a seal ring having both high sealing performance and good assembling performance.

上記目的を達成するため、本発明の一形態に係るシールリングは、中心軸を中心とする環状に形成されている。
上記シールリングは、第１端部と、第２端部と、を具備する。
上記第１端部は、上記中心軸に垂直に延びる第１垂直面と、上記第１垂直面の内周側の第１縁部から上記中心軸に平行に延びる第１平行面と、上記第１縁部から間隔をあけて上記第１垂直面に設けられた第１係合部と、を有する。
上記第２端部は、上記中心軸に垂直に延び、上記第１垂直面に面接触する第２垂直面と、上記第２垂直面の内周側の第２縁部から上記中心軸に平行に延び、上記第１平行面に面接触する第２平行面と、上記第２縁部から間隔をあけて上記第２垂直面に設けられ、上記第１係合部に係合する第２係合部と、を有する。 In order to achieve the above object, a seal ring according to an embodiment of the present invention is formed in an annular shape centering on a central axis.
The seal ring includes a first end and a second end.
The first end portion includes a first vertical surface extending perpendicularly to the central axis, a first parallel surface extending in parallel to the central axis from a first edge on the inner peripheral side of the first vertical surface, and the first end surface. A first engagement portion provided on the first vertical surface with a gap from one edge portion.
The second end portion extends perpendicularly to the central axis, is in parallel with the central axis from a second vertical surface that is in surface contact with the first vertical surface, and a second edge on the inner peripheral side of the second vertical surface. A second parallel surface extending in contact with the first parallel surface and provided on the second vertical surface at a distance from the second edge and engaging the first engagement portion. A joint portion.

この構成のシールリングでは、第１係合部と第２係合部との係合により、自由状態にて、第１端部と第２端部とが離間せず、一定の外径が保たれるため、高い組み付け性が得られる。
また、このシールリングでは、第１垂直面と第２垂直面とが面接触し、第１平行面と第２平行面とが面接触しているため、第１端部と第２端部との間におけるオイル漏れが発生しにくい。
更に、このシールリングでは、第１係合部及び第２係合部がそれぞれ第１縁部及び第２縁部から離間しており、第１垂直面と第２垂直面との面接触が第１係合部及び第２係合部の内周側で保たれている。このため、このシールリングでは、第１係合部及び第２係合部が設けられているものの、シール性が損なわれない。
このように、上記の構成により、高いシール性、及び良好な組み付け性を兼ね備えたシールリングを提供することができる。 In the seal ring having this configuration, the first end portion and the second end portion are not separated from each other in a free state due to the engagement between the first engagement portion and the second engagement portion, and a constant outer diameter is maintained. Therefore, high assemblability can be obtained.
Further, in this seal ring, the first vertical surface and the second vertical surface are in surface contact, and the first parallel surface and the second parallel surface are in surface contact. Oil leakage is less likely to occur.
Further, in this seal ring, the first engaging portion and the second engaging portion are spaced apart from the first edge portion and the second edge portion, respectively, and the surface contact between the first vertical surface and the second vertical surface is the first. It is maintained on the inner peripheral side of the first engaging portion and the second engaging portion. For this reason, in this seal ring, although the 1st engaging part and the 2nd engaging part are provided, sealing performance is not impaired.
Thus, the above configuration can provide a seal ring that has both high sealing performance and good assembling performance.

上記第１平行面が内周側を向き、上記第１係合部が凸形状に形成されていてもよい。
上記第２平行面が外周側を向き、上記第２係合部が凹形状に形成されていてもよい。
これにより、上記シールリングの具体的な構成を容易に実現することができる。 The first parallel surface may face the inner peripheral side, and the first engagement portion may be formed in a convex shape.
The second parallel surface may face the outer peripheral side, and the second engagement portion may be formed in a concave shape.
Thereby, the specific structure of the said seal ring is easily realizable.

高いシール性、及び良好な組み付け性を兼ね備えたシールリングを提供することができる。   It is possible to provide a seal ring that has both high sealing performance and good assembling performance.

本発明の一実施形態に係るシールリングの側面図である。It is a side view of the seal ring which concerns on one Embodiment of this invention. 上記シールリングの合口部を拡大して示す斜視図である。It is a perspective view which expands and shows the joint part of the said seal ring. 上記シールリングの合口部の第１端部を拡大して示す斜視図である。It is a perspective view which expands and shows the 1st end part of the joint part of the said seal ring. 上記シールリングの合口部の第２端部を拡大して示す斜視図である。It is a perspective view which expands and shows the 2nd end part of the joint part of the said seal ring. 上記シールリングの合口部を外周面側から示す図である。It is a figure which shows the joint part of the said seal ring from an outer peripheral surface side. 上記シールリングの合口部を外周面側から示す図である。It is a figure which shows the joint part of the said seal ring from an outer peripheral surface side. 上記シールリングの合口部を外周面側から示す図である。It is a figure which shows the joint part of the said seal ring from an outer peripheral surface side. 比較例に係るシールリングの合口部を拡大して示す斜視図である。It is a perspective view which expands and shows the joint part of the seal ring which concerns on a comparative example. 比較例に係るシールリングの合口部の第１端部を拡大して示す斜視図である。It is a perspective view which expands and shows the 1st end part of the joint part of the seal ring which concerns on a comparative example. 比較例に係るシールリングの合口部の第２端部を拡大して示す斜視図である。It is a perspective view which expands and shows the 2nd end part of the joint part of the seal ring which concerns on a comparative example. 変形例１に係るシールリングの合口部を外周側から示す図である。It is a figure which shows the joint part of the seal ring which concerns on the modification 1 from an outer peripheral side. 変形例２に係るシールリングの合口部を外周側から示す図である。It is a figure which shows the joint part of the seal ring which concerns on the modification 2 from an outer peripheral side. 変形例３に係るシールリングの合口部を外周側から示す図である。It is a figure which shows the joint part of the seal ring which concerns on the modification 3 from an outer peripheral side. 変形例４に係るシールリングの合口部を外周側から示す図である。It is a figure which shows the joint part of the seal ring which concerns on the modification 4 from an outer peripheral side. 変形例５に係るシールリングの合口部を拡大して示す斜視図である。It is a perspective view which expands and shows the joint part of the seal ring which concerns on the modification 5. FIG. 変形例５に係るシールリングの合口部の第１端部を拡大して示す斜視図である。It is a perspective view which expands and shows the 1st end part of the joint part of the seal ring which concerns on the modification 5. FIG. 変形例５に係るシールリングの合口部の第２端部を拡大して示す斜視図である。It is a perspective view which expands and shows the 2nd end part of the joint part of the seal ring which concerns on the modification 5. FIG.

以下、図面を参照しながら、本発明の実施形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

［シールリング１の概要］
図１は、本発明の一実施形態に係るシールリング１の側面図である。本実施形態に係るシールリング１は、油圧式の自動車用自動変速機など、種々の油圧機器に適用可能である。図１は力が付与されていない自由状態のシールリング１を示している。 [Outline of seal ring 1]
FIG. 1 is a side view of a seal ring 1 according to an embodiment of the present invention. The seal ring 1 according to the present embodiment can be applied to various hydraulic devices such as a hydraulic automatic transmission for automobiles. FIG. 1 shows the seal ring 1 in a free state where no force is applied.

シールリング１は、第１端部１０ａ及び第２端部１０ｂから構成される合口部１０を有し、中心軸Ｃを中心とする環状に形成されている。また、シールリング１は、外周面１ａ、内周面１ｂ、第１側面１ｃ、及び第２側面１ｄを有する。外周面１ａ及び内周面１ｂは、中心軸Ｃに平行な面である。側面１ｃ，１ｄは、外周面１ａと内周面１ｂとを接続する面である。   The seal ring 1 has a joint portion 10 composed of a first end portion 10a and a second end portion 10b, and is formed in an annular shape centering on a central axis C. The seal ring 1 has an outer peripheral surface 1a, an inner peripheral surface 1b, a first side surface 1c, and a second side surface 1d. The outer peripheral surface 1a and the inner peripheral surface 1b are surfaces parallel to the central axis C. The side surfaces 1c and 1d are surfaces that connect the outer peripheral surface 1a and the inner peripheral surface 1b.

シールリング１を形成する材料は、駆動環境などにより適宜決定可能であり、例えば、鋳鉄などの金属材料や、熱可塑性樹脂である。シールリング１の摩擦損失を低減するためには、シールリング１を形成する材料は摺動特性に優れることが好ましい。また、シールリング１を形成する材料は耐熱性に優れることが好ましい。   The material for forming the seal ring 1 can be appropriately determined depending on the driving environment, and is, for example, a metal material such as cast iron, or a thermoplastic resin. In order to reduce the friction loss of the seal ring 1, the material forming the seal ring 1 is preferably excellent in sliding characteristics. Moreover, it is preferable that the material which forms the seal ring 1 is excellent in heat resistance.

シールリング１の形成に適した熱可塑性樹脂としては、例えば、ポリテトラフルオロエチレン（ＰＴＦＥ）、ポリエーテルエーテルケトン（ＰＥＥＫ）、テトラフルオロエチレン・パーフルオロアルキルビニルエーテル共重合体（ＰＦＡ）、テトラフルオロエチレン・エチレン共重合体（ＥＴＦＥ）、ポリビニリデンジフルオライド（ＰＶＤＦ）などが挙げられる。   Examples of the thermoplastic resin suitable for forming the seal ring 1 include polytetrafluoroethylene (PTFE), polyether ether ketone (PEEK), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), and tetrafluoroethylene. -Ethylene copolymer (ETFE), polyvinylidene difluoride (PVDF), etc. are mentioned.

また、シールリング１を形成する熱可塑性樹脂は、複数種類の材料が複合化された複合材料であってもよく、カーボンや炭素繊維などによって強化したいわゆるエンジニアリングプラスチックであってもよい。   The thermoplastic resin forming the seal ring 1 may be a composite material in which a plurality of types of materials are combined, or may be a so-called engineering plastic reinforced with carbon or carbon fiber.

図２〜図４は、自由状態のシールリング１の合口部１０を示す図である。図２は、合口部１０を拡大して示す斜視図である。図３Ａは、合口部１０の第１端部１０ａを拡大して示す斜視図である。図３Ｂは、合口部１０の第２端部１０ｂを拡大して示す斜視図である。図４は、合口部１０を外周面１ａ側から示す図である。   2-4 is a figure which shows the joint part 10 of the seal ring 1 of a free state. FIG. 2 is an enlarged perspective view showing the joint portion 10. FIG. 3A is an enlarged perspective view showing the first end portion 10a of the joint portion 10. FIG. 3B is a perspective view showing the second end portion 10b of the joint portion 10 in an enlarged manner. FIG. 4 is a view showing the joint portion 10 from the outer peripheral surface 1a side.

第１端部１０ａは、第１端面１３ａと、第１凸部１１ａと、第１凹部１２ａとを有する。第２端部１０ｂは、第２端面１３ｂと、第２凸部１１ｂと、第２凹部１２ｂとを有する。端面１３ａ，１３ｂは内周面１ｂ側の領域に設けられ、凸部１１ａ，１１ｂ及び凹部１２ａ，１２ｂは外周面１ａ側の領域に設けられている。   The first end portion 10a includes a first end surface 13a, a first convex portion 11a, and a first concave portion 12a. The second end portion 10b has a second end surface 13b, a second convex portion 11b, and a second concave portion 12b. The end surfaces 13a and 13b are provided in a region on the inner peripheral surface 1b side, and the convex portions 11a and 11b and the concave portions 12a and 12b are provided in a region on the outer peripheral surface 1a side.

端面１３ａ，１３ｂは、第１側面１ｃと第２側面１ｄとの間の全幅にわたって設けられている。端面１３ａ，１３ｂは、シールリング１の外周面１ａ及び内周面１ｂに垂直であり、相互に対向している。第１凸部１１ａ及び第２凹部１２ｂは、第１側面１ｃ側の領域に設けられている。第２凸部１１ｂ及び第１凹部１２ａは、第２側面１ｄ側の領域に設けられている。   The end surfaces 13a and 13b are provided over the entire width between the first side surface 1c and the second side surface 1d. The end surfaces 13a and 13b are perpendicular to the outer peripheral surface 1a and the inner peripheral surface 1b of the seal ring 1 and face each other. The 1st convex part 11a and the 2nd recessed part 12b are provided in the area | region by the side of the 1st side surface 1c. The 2nd convex part 11b and the 1st recessed part 12a are provided in the field by the 2nd side 1d side.

第１端部１０ａの第１凸部１１ａは、第１端面１３ａから外周面１ａに沿って突出している。第１凹部１２ａは、第１端面１３ａから外周面１ａに沿って凹んでいる。第２端部１０ｂの第２凸部１１ｂは、第２端面１３ｂから外周面１ａに沿って突出している。第２凹部１２ｂは、第２端面１３ｂから外周面１ａに沿って凹んでいる。   The 1st convex part 11a of the 1st end part 10a protrudes along the outer peripheral surface 1a from the 1st end surface 13a. The 1st recessed part 12a is dented along the outer peripheral surface 1a from the 1st end surface 13a. The 2nd convex part 11b of the 2nd end part 10b protrudes along the outer peripheral surface 1a from the 2nd end surface 13b. The second recess 12b is recessed from the second end surface 13b along the outer peripheral surface 1a.

第１端部１０ａの第１凸部１１ａの先端部には、第２側面１ｄ側に突出する第１係合部１４ａが設けられている。これにより、第１凸部１１ａは、全体として、カギ状となっている。第１係合部１４ａは、第１凸部１１ａにおける外周面１ａ側の領域に配置されている。   A first engagement portion 14a that protrudes toward the second side surface 1d is provided at the tip of the first convex portion 11a of the first end portion 10a. Thereby, the 1st convex part 11a becomes key shape as a whole. The 1st engaging part 14a is arrange | positioned in the area | region by the side of the outer peripheral surface 1a in the 1st convex part 11a.

第２端部１０ｂの第２凹部１２ｂには、その周方向の全幅にわたって、第２側面１ｄ側に凹む第２係合部１４ｂが設けられている。第２係合部１４ｂは、第２凹部１２ｂにおける外周面１ａ側の領域に配置されている。   The second recess portion 12b of the second end portion 10b is provided with a second engagement portion 14b that is recessed toward the second side surface 1d over the entire width in the circumferential direction. The 2nd engaging part 14b is arrange | positioned in the area | region by the side of the outer peripheral surface 1a in the 2nd recessed part 12b.

第１端部１０ａの第１係合部１４ａと第２端部１０ｂの第２係合部１４ｂとは相互に係合している。つまり、凸形状の第１係合部１４ａが凹形状の第２係合部１４ｂ内に入り込んでいる。自由状態のシールリング１では、第１係合部１４ａの後端部が第２係合部１４ｂの先端部に引っ掛かっている。   The first engagement portion 14a of the first end portion 10a and the second engagement portion 14b of the second end portion 10b are engaged with each other. That is, the convex first engaging portion 14a enters the concave second engaging portion 14b. In the seal ring 1 in the free state, the rear end portion of the first engagement portion 14a is caught by the front end portion of the second engagement portion 14b.

図５は、第１端部１０ａの第１係合部１４ａと第２端部１０ｂの第２係合部１４ｂとが係合していない状態のシールリング１の合口部１０を外周面１ａ側から示す図である。この状態のシールリング１では、第１端部１０ａと第２端部１０ｂとが離間しており、自由状態における外径Ｄ０よりも大きい外径Ｄ１となっている。 FIG. 5 shows the abutment portion 10 of the seal ring 1 in the state where the first engagement portion 14a of the first end portion 10a and the second engagement portion 14b of the second end portion 10b are not engaged with each other on the outer peripheral surface 1a side. FIG. In the seal ring 1 in this state, it is spaced apart a first end 10a and a second end portion 10b, has an outer diameter D 1 greater than the outer diameter D 0 in the free state.

図５に示す状態のシールリング１は、ハウジングの内周面の径に対して外径Ｄ１が大きいため、ハウジング内に入りにくい。したがって、この状態のシールリング１では、当該シールリング１を装着したシャフトをハウジングにスムーズに挿通させることができないため、良好な組み付け性が得られない。 5 the sealing ring 1 in the state shown, since a large outer diameter D 1 relative to the diameter of the inner peripheral surface of the housing, difficult to enter into the housing. Therefore, in the seal ring 1 in this state, since the shaft on which the seal ring 1 is mounted cannot be smoothly inserted into the housing, good assemblability cannot be obtained.

シールリング１の製造プロセスでは、まず図５に示す状態に形成された後に、第１係合部１４ａと第２係合部１４ｂとが係合させられ、図４に示す自由状態とされる。自由状態のシールリング１では、第１係合部１４ａと第２係合部１４ｂとの係合により、図５に示す状態における外径Ｄ１よりも小さい外径Ｄ０に保たれる。 In the manufacturing process of the seal ring 1, first, after being formed in the state shown in FIG. 5, the first engaging portion 14 a and the second engaging portion 14 b are engaged to be in a free state shown in FIG. 4. In the seal ring 1 in the free state, the outer diameter D 0 smaller than the outer diameter D 1 in the state shown in FIG. 5 is maintained by the engagement of the first engaging portion 14a and the second engaging portion 14b.

つまり、自由状態のシールリング１では、第１端部１０ａの第１係合部１４ａの後端部が第２端部１０ｂの第２係合部１４ｂの先端部に引っ掛かっているため、外径Ｄ０より大きい外径となるように変形することができない。なお、第１係合部１４ａと第２係合部１４ｂとのより確実な係合を得るため、第１係合部１４ａの突出量及び第２係合部１４ｂの凹み量は、０．０５ｍｍ以上であることが好ましい。 That is, in the seal ring 1 in the free state, the rear end portion of the first engagement portion 14a of the first end portion 10a is hooked on the front end portion of the second engagement portion 14b of the second end portion 10b. D deformation can not be so 0 becomes larger outer diameter. In order to obtain a more reliable engagement between the first engagement portion 14a and the second engagement portion 14b, the protrusion amount of the first engagement portion 14a and the recess amount of the second engagement portion 14b are 0.05 mm. The above is preferable.

本実施形態に係るシールリング１では、自由状態における外径Ｄ０がハウジングの内周面の径よりもやや大きく設定される。これにより、シールリング１がハウジング内に入りやすくなるため、当該シールリングを装着したシャフトがハウジングにスムーズに挿通するようになる。したがって、自由状態のシールリング１では、良好な組み付け性が得られる。 In the seal ring 1 according to the present embodiment, the outer diameter D 0 in the free state is set to be slightly larger than the diameter of the inner peripheral surface of the housing. As a result, the seal ring 1 can easily enter the housing, so that the shaft on which the seal ring is mounted is smoothly inserted into the housing. Therefore, in the seal ring 1 in the free state, good assemblability can be obtained.

図６は、シャフト及びハウジングに組み付けられた状態のシールリング１の合口部１０を外周面１ａ側から示す図である。この状態のシールリング１では、自由状態における外径Ｄ０よりも小さい外径Ｄ２となっている。このとき、第１係合部１４ａの後端部が第２係合部１４ｂの先端部から離れ、第２係合部１４ｂによる第１係合部１４ａの拘束が解除される。 FIG. 6 is a view showing the joint portion 10 of the seal ring 1 assembled to the shaft and the housing from the outer peripheral surface 1a side. In the seal ring 1 in this state, and has a smaller outer diameter D 2 than the outer diameter D 0 in the free state. At this time, the rear end portion of the first engagement portion 14a is separated from the distal end portion of the second engagement portion 14b, and the restriction of the first engagement portion 14a by the second engagement portion 14b is released.

図６に示す状態のシールリング１は、第１係合部１４ａが第２係合部１４ｂによって拘束されていないため、図５に示す状態に戻ろうとする弾性力をハウジングの内周面に付与する。つまり、ハウジング内の外径Ｄ２のシールリング１は、自由状態の外径Ｄ０よりも更に大きい外径Ｄ１に戻ろうとする弾性力によって、ハウジングの内周面に対して密着する。したがって、シールリング１では、ハウジングの内周面に対する強い密着力が得られる。 In the seal ring 1 in the state shown in FIG. 6, since the first engaging portion 14a is not restrained by the second engaging portion 14b, an elastic force for returning to the state shown in FIG. 5 is applied to the inner peripheral surface of the housing. To do. In other words, the seal ring 1 of the outer diameter D 2 in the housing by the elastic force of returning to the outer diameter D 1 greater than the outer diameter D 0 of the free state, seals against the inner peripheral surface of the housing. Therefore, in the seal ring 1, strong adhesion to the inner peripheral surface of the housing can be obtained.

このように、シールリング１では、自由状態における小さい外径Ｄ０により良好な組み付け性が得られるとともに、ハウジングに対する強い密着力によりハウジングとの間の高いシール性が得られる。 As described above, in the seal ring 1, a good assembling property can be obtained due to the small outer diameter D 0 in the free state, and a high sealing property with the housing can be obtained due to the strong adhesion force to the housing.

更に、本実施形態に係るシールリング１は、合口部１０におけるオイル漏れが良好に抑制される構成を有する。以下、合口部１０の詳細な構成について説明する。   Furthermore, the seal ring 1 according to the present embodiment has a configuration in which oil leakage at the joint portion 10 is satisfactorily suppressed. Hereinafter, a detailed configuration of the abutment portion 10 will be described.

［合口部１０の詳細］
シールリング１の合口部１０では、第１端部１０ａと第２端部１０ｂとが面接触している３つのシール部が組み合わされた構成によって、高いシール性が実現されている。当該３つのシール部について、図２〜図４を参照しながら説明する。 [Details of joint section 10]
In the joint portion 10 of the seal ring 1, high sealing performance is realized by a configuration in which three seal portions in which the first end portion 10a and the second end portion 10b are in surface contact are combined. The three seal portions will be described with reference to FIGS.

第１シール部は、第１端部１０ａの第１凸部１１ａの内周側を向いた平行面１７ａと、第２端部１０ｂの第２凹部１２ｂの外周側を向いた平行面１７ｂと、によって構成されている。第１シール部を構成する平行面１７ａ，１７ｂは、中心軸Ｃに平行な面であり、相互に面接触している。このため、平行面１７ａ，１７ｂ間にはオイルが進入しにくい。   The first seal portion includes a parallel surface 17a facing the inner peripheral side of the first convex portion 11a of the first end portion 10a, a parallel surface 17b facing the outer peripheral side of the second concave portion 12b of the second end portion 10b, It is constituted by. The parallel surfaces 17a and 17b constituting the first seal portion are surfaces parallel to the central axis C and are in surface contact with each other. For this reason, it is difficult for oil to enter between the parallel surfaces 17a and 17b.

第２シール部は、第２端部１０ｂの第２凸部１１ｂの内周側を向いた平行面１８ｂと、第１端部１０ａの第１凹部１２ａの外周側を向いた平行面１８ａと、によって構成されている。第２シール部を構成する平行面１８ａ，１８ｂは、中心軸Ｃに平行な面であり、相互に面接触している。このため、平行面１８ａ，１８ｂ間にはオイルが進入しにくい。   The second seal portion includes a parallel surface 18b facing the inner peripheral side of the second convex portion 11b of the second end portion 10b, a parallel surface 18a facing the outer peripheral side of the first concave portion 12a of the first end portion 10a, and It is constituted by. The parallel surfaces 18a and 18b constituting the second seal portion are surfaces parallel to the central axis C and are in surface contact with each other. For this reason, it is difficult for oil to enter between the parallel surfaces 18a and 18b.

第３シール部は、第１端部１０ａにおける第１凸部１１ａ及び第１凹部１２ａの第２側面１ｄ側を向いた垂直面１５ａと、第２端部１０ｂにおける第２凸部１１ｂ及び第２凹部１２ｂの第１側面１ｃ側を向いた垂直面１５ｂと、によって構成されている。第３シール部を構成する垂直面１５ａ，１５ｂは、中心軸Ｃに垂直な面であり、相互に面接触している。このため、垂直面１５ａ，１５ｂ間にはオイルが進入しにくい。   The third seal portion includes a vertical surface 15a facing the second side surface 1d of the first convex portion 11a and the first concave portion 12a at the first end portion 10a, and a second convex portion 11b and a second second surface at the second end portion 10b. And a vertical surface 15b facing the first side surface 1c of the recess 12b. The vertical surfaces 15a and 15b constituting the third seal portion are surfaces perpendicular to the central axis C and are in surface contact with each other. For this reason, it is difficult for oil to enter between the vertical surfaces 15a and 15b.

また、垂直面１５ａ，１５ｂは、内周側の縁部おいて、平行面１７ａ，１７ｂ及び平行面１８ａ，１８ｂに対して直交している。このため、仮に、平行面１７ａ，１７ｂ間、垂直面１５ａ，１５ｂ間、及び平行面１８ａ，１８ｂ間に僅かな隙間が生じた場合にも、垂直面１５ａ，１５ｂの縁部で屈曲した当該隙間を流路とするオイル漏れは発生しにくい。   The vertical surfaces 15a and 15b are orthogonal to the parallel surfaces 17a and 17b and the parallel surfaces 18a and 18b at the inner peripheral edge. Therefore, even if a slight gap occurs between the parallel surfaces 17a and 17b, between the vertical surfaces 15a and 15b, and between the parallel surfaces 18a and 18b, the gap bent at the edge of the vertical surfaces 15a and 15b. Oil leakage is not likely to occur in the flow path.

更に、シールリング１は、第３シール部に上述の第１係合部１４ａ及び第２係合部１４ｂが設けられているものの、第３シール部におけるシール性が損なわれない構成を有する。以下、当該構成について説明する。   Furthermore, the seal ring 1 has a configuration in which the sealing performance in the third seal portion is not impaired, although the first engagement portion 14a and the second engagement portion 14b are provided in the third seal portion. The configuration will be described below.

第１端部１０ａの第１係合部１４ａは、垂直面１５ａに設けられている。より詳細には、第１係合部１４ａは垂直面１５ａの内周側の縁部から間隔をあけて配置され、つまり垂直面１５ａが第１係合部１４ａの内周側に残されている。これにより、垂直面１５ａは第１凸部１１ａ及び第１凹部１２ａの周方向の全幅にわたって延びている。   The first engaging portion 14a of the first end portion 10a is provided on the vertical surface 15a. More specifically, the first engaging portion 14a is disposed at a distance from the inner peripheral edge of the vertical surface 15a, that is, the vertical surface 15a remains on the inner peripheral side of the first engaging portion 14a. . Accordingly, the vertical surface 15a extends over the entire circumferential width of the first convex portion 11a and the first concave portion 12a.

第２端部１０ｂの第２係合部１４ｂは、垂直面１５ｂに設けられている。より詳細には、第２係合部１４ｂは垂直面１５ｂの内周側の縁部から間隔をあけて配置され、つまり垂直面１５ｂが第２係合部１４ｂの内周側に残されている。これにより、垂直面１５ｂは第２凸部１１ｂ及び第２凹部１２ｂの周方向の全幅にわたって延びている。   The second engaging portion 14b of the second end portion 10b is provided on the vertical surface 15b. More specifically, the second engaging portion 14b is disposed at a distance from the inner peripheral edge of the vertical surface 15b, that is, the vertical surface 15b remains on the inner peripheral side of the second engaging portion 14b. . Accordingly, the vertical surface 15b extends over the entire circumferential width of the second convex portion 11b and the second concave portion 12b.

これらの構成により、第１端部１０ａの第１凸部１１ａと第２端部１０ｂの第２凹部１２ｂとが、垂直面１５ａ及び垂直面１５ｂの内周側の縁部に沿って隙間なく密着する。このため、シールリング１では、第３シール部に第１係合部１４ａ及び第２係合部１４ｂが設けられているものの、第３シール部におけるシール性が損なわれない。   With these configurations, the first convex portion 11a of the first end portion 10a and the second concave portion 12b of the second end portion 10b are in close contact with each other along the inner peripheral edge of the vertical surface 15a and the vertical surface 15b. To do. For this reason, in the seal ring 1, although the 1st engaging part 14a and the 2nd engaging part 14b are provided in the 3rd seal part, the sealing performance in a 3rd seal part is not impaired.

なお、垂直面１５ａと垂直面１５ｂとの間でより良好なシール性を得るために、第１垂直面１５ａにおける第１係合部１４ａの内周側の領域と、第２垂直面１５ｂにおける第２係合部１４ｂの内周側の領域との接触面積が十分に広いことが好ましい。このため、第１係合部１４ａと垂直面１５ａの内周側の縁部との間隔、及び第２係合部１４ｂと垂直面１５ｂの内周側の縁部との間隔が、いずれも０．０５ｍｍ以上であることが好ましい。   In order to obtain better sealing performance between the vertical surface 15a and the vertical surface 15b, a region on the inner peripheral side of the first engaging portion 14a in the first vertical surface 15a and the second vertical surface 15b. It is preferable that the contact area with the area | region of the inner peripheral side of 2 engaging part 14b is sufficiently wide. Therefore, the distance between the first engaging portion 14a and the inner peripheral edge of the vertical surface 15a and the distance between the second engaging portion 14b and the inner peripheral edge of the vertical surface 15b are both 0. .05 mm or more is preferable.

［比較例］
図７〜図８Ｂは、本実施形態の比較例に係るシールリング１０１の合口部１１０を示す図である。図７は、シャフト及びハウジングに組み付けられた状態のシールリング１０１の合口部１１０を拡大して示す斜視図である。図８Ａは、合口部１１０の第１端部１１０ａを拡大して示す斜視図である。図８Ｂは、合口部１１０の第２端部１１０ｂを拡大して示す斜視図である。 [Comparative example]
FIGS. 7-8B is a figure which shows the joint part 110 of the seal ring 101 which concerns on the comparative example of this embodiment. FIG. 7 is an enlarged perspective view showing the joint portion 110 of the seal ring 101 in a state assembled to the shaft and the housing. FIG. 8A is an enlarged perspective view showing the first end portion 110a of the joint portion 110. FIG. FIG. 8B is an enlarged perspective view showing the second end portion 110b of the joint portion 110. FIG.

本比較例に係るシールリング１０１は、以下に示す構成以外について、上記実施形態に係るシールリング１の構成と同様である。本比較例に係るシールリング１０１の構成のうち、上記実施形態に係るシールリング１と同様の構成については、同一の符号を付し、その説明を省略する。   The seal ring 101 according to this comparative example is the same as the configuration of the seal ring 1 according to the above embodiment except for the configuration described below. Among the configurations of the seal ring 101 according to this comparative example, the same configurations as those of the seal ring 1 according to the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

シールリング１０１の合口部１１０では、第１端部１１０ａの第１係合部１１４ａ及び第２端部１１０ｂの第２係合部１１４ｂが、垂直面１１５ａ及び垂直面１１５ｂの径方向の全幅にわたって形成されている。つまり、第１係合部１１４ａ及び第２係合部１１４ｂが、垂直面１１５ａ及び垂直面１１５ｂの外周側の縁部から内周側の縁部まで連続している。   In the joint portion 110 of the seal ring 101, the first engagement portion 114a of the first end portion 110a and the second engagement portion 114b of the second end portion 110b are formed over the entire radial width of the vertical surface 115a and the vertical surface 115b. Has been. That is, the first engaging portion 114a and the second engaging portion 114b are continuous from the outer peripheral edge of the vertical surface 115a and the vertical surface 115b to the inner peripheral edge.

したがって、第１端部１１０ａの垂直面１１５ａは第１係合部１１４ａで途切れ、第２端部１１０ｂの垂直面１１５ａは第２係合部１１４ｂで途切れている。換言すると、第１端部１１０ａの垂直面１１５ａは第１凸部１１ａの先端部には設けられておらず、第２端部１０ｂの垂直面１１５ｂは第２凹部１２ｂには設けられていない。   Accordingly, the vertical surface 115a of the first end portion 110a is interrupted at the first engaging portion 114a, and the vertical surface 115a of the second end portion 110b is interrupted at the second engaging portion 114b. In other words, the vertical surface 115a of the first end portion 110a is not provided at the tip portion of the first convex portion 11a, and the vertical surface 115b of the second end portion 10b is not provided in the second concave portion 12b.

このため、図７に示すように、シールリング１０１の合口部１１０では、第１端部１１０ａの第１凸部１１ａと、第２端部１１０ｂの第２凹部１２ｂとの間に、内周側から外周側へと貫通する隙間が発生する。したがって、合口部１１０では、図７及び図８Ｂに矢印で示すように、第１凸部１１ａと第２凹部１２ｂとの隙間を、内周側から外周側にオイルｏが通過しやすくなる。   For this reason, as shown in FIG. 7, in the joint part 110 of the seal ring 101, between the 1st convex part 11a of the 1st end part 110a, and the 2nd recessed part 12b of the 2nd end part 110b, it is an inner peripheral side. A gap penetrating from the outer periphery to the outer peripheral side is generated. Therefore, in the joint portion 110, as shown by arrows in FIGS. 7 and 8B, the oil o easily passes through the gap between the first convex portion 11a and the second concave portion 12b from the inner peripheral side to the outer peripheral side.

このように、本比較例に係るシールリング１０１では、第１係合部１１４ａ及び第２係合部１１４ｂを設けることにより、第１凸部１１ａと第２凹部１２ｂとの間に隙間が発生するため、シール性が低下する。   As described above, in the seal ring 101 according to this comparative example, a gap is generated between the first convex portion 11a and the second concave portion 12b by providing the first engaging portion 114a and the second engaging portion 114b. For this reason, the sealing performance is lowered.

［変形例］
図９Ａ〜９Ｄ，１０Ａ〜１０Ｃは、上記実施形態に係るシールリング１の変形例を示す図である。各変形例に係るシールリング２〜５は、以下に示す構成以外について、上記実施形態に係るシールリング１の構成と同様である。各変形例に係るシールリング２〜５の構成のうち、上記実施形態に係るシールリング１と同様の構成については、同一の符号を付し、その説明を省略する。 [Modification]
9A to 9D and 10A to 10C are views showing a modification of the seal ring 1 according to the above embodiment. The seal rings 2 to 5 according to the respective modifications are the same as the configuration of the seal ring 1 according to the above embodiment except for the configuration described below. Of the configurations of the seal rings 2 to 5 according to the respective modifications, the same configurations as those of the seal ring 1 according to the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

（変形例１）
図９Ａは、変形例１に係るシールリング２の合口部２０を外周面１ａ側から示す図である。合口部２０では、上記実施形態に係る合口部１０とは異なり、第１係合部２４ａが第１凸部１１ａの先端部から間隔をあけて配置され、第２係合部２４ｂが第２凹部１２ｂの両端部から間隔をあけて配置されている。 (Modification 1)
FIG. 9A is a view showing the abutment portion 20 of the seal ring 2 according to Modification 1 from the outer peripheral surface 1a side. In the abutment portion 20, unlike the abutment portion 10 according to the above-described embodiment, the first engagement portion 24a is disposed at a distance from the distal end portion of the first protrusion 11a, and the second engagement portion 24b is a second recess. It arrange | positions at intervals from the both ends of 12b.

本変形例１に係るシールリング２でも、第１係合部２４ａと第２係合部２４ｂとの係合により自由状態における外径を小さく保つことができるため、良好な組み付け性が得られる。また、第１端部２０ａの第１凸部１１ａと第２端部２０ｂの第２凹部１２ｂとが垂直面１５ａ及び垂直面１５ｂの内周側の縁部に沿って隙間なく密着するため、高いシール性が得られる。   Even in the seal ring 2 according to the first modification, the outer diameter in the free state can be kept small by the engagement between the first engagement portion 24a and the second engagement portion 24b, and therefore, good assemblability can be obtained. In addition, the first convex portion 11a of the first end portion 20a and the second concave portion 12b of the second end portion 20b are in close contact with each other along the edge on the inner peripheral side of the vertical surface 15a and the vertical surface 15b. Sealability is obtained.

（変形例２）
図９Ｂは、変形例２に係るシールリング３の合口部３０を外周面１ａ側から示す図である。合口部３０では、上記実施形態に係る合口部１０とは反対に、第１係合部３４ａが凹形状に形成され、第２係合部３４ｂが凸形状に形成されている。 (Modification 2)
FIG. 9B is a diagram illustrating the abutment portion 30 of the seal ring 3 according to Modification 2 from the outer peripheral surface 1a side. In the abutment portion 30, the first engagement portion 34a is formed in a concave shape and the second engagement portion 34b is formed in a convex shape, contrary to the abutment portion 10 according to the above embodiment.

本変形例２に係るシールリング３でも、第１係合部３４ａと第２係合部３４ｂとの係合により自由状態における外径を小さく保つことができるため、良好な組み付け性が得られる。また、第１端部３０ａの第１凸部１１ａと第２端部３０ｂの第２凹部１２ｂとが垂直面１５ａ及び垂直面１５ｂの内周側の縁部に沿って隙間なく密着するため、高いシール性が得られる。   Also in the seal ring 3 according to the second modification, the outer diameter in the free state can be kept small by the engagement between the first engagement portion 34a and the second engagement portion 34b, and therefore, good assemblability can be obtained. Further, the first convex portion 11a of the first end portion 30a and the second concave portion 12b of the second end portion 30b are in close contact with each other along the edge on the inner peripheral side of the vertical surface 15a and the vertical surface 15b. Sealability is obtained.

（変形例３）
図９Ｃは、変形例３に係るシールリング４の合口部４０を外周面１ａ側から示す図である。合口部４０では、上記実施形態に係る合口部１０とは異なり、第１係合部４４ａ及び第２係合部４４ｂが、相互に係合可能となるように、凹形状と凸形状とが組み合わされて構成されている。 (Modification 3)
FIG. 9C is a view showing the joint portion 40 of the seal ring 4 according to Modification 3 from the outer peripheral surface 1a side. In the joint portion 40, unlike the joint portion 10 according to the above embodiment, the concave shape and the convex shape are combined so that the first engaging portion 44a and the second engaging portion 44b can be engaged with each other. Has been configured.

本変形例３に係るシールリング４でも、第１係合部４４ａと第２係合部４４ｂとの係合により自由状態における外径を小さく保つことができるため、良好な組み付け性が得られる。また、第１端部４０ａの第１凸部１１ａと第２端部４０ｂの第２凹部１２ｂとが垂直面１５ａ及び垂直面１５ｂの内周側の縁部に沿って隙間なく密着するため、高いシール性が得られる。   Also in the seal ring 4 according to the third modification, the outer diameter in the free state can be kept small by the engagement between the first engagement portion 44a and the second engagement portion 44b, and therefore, good assemblability can be obtained. Further, the first convex portion 11a of the first end portion 40a and the second concave portion 12b of the second end portion 40b are in close contact with each other along the edge on the inner peripheral side of the vertical surface 15a and the vertical surface 15b. Sealability is obtained.

（変形例４）
図９Ｄは、変形例４に係るシールリング５の合口部５０を外周面１ａ側から示す図である。合口部５０では、上記実施形態に係る合口部１０とは異なり、第１端部５０ａの第１係合部５４ａに第１凹部１２ａ側に突出する第１返し部５９ａが設けられ、第２端部５０ｂの第２係合部５４ｂに第２凹部１２ｂ側に凹む第２返し部５９ｂが設けられている。 (Modification 4)
FIG. 9D is a view showing the abutment portion 50 of the seal ring 5 according to Modification 4 from the outer peripheral surface 1a side. In the abutment portion 50, unlike the abutment portion 10 according to the above embodiment, the first engagement portion 54a of the first end portion 50a is provided with a first return portion 59a that protrudes toward the first recess 12a, and the second end The second engagement portion 54b of the portion 50b is provided with a second return portion 59b that is recessed toward the second recess 12b.

本変形例４に係るシールリング５では、自由状態において、第１係合部５４ａの第１返し部５９ａと、第２係合部５４ｂの第２返し部５９ｂとが相互に嵌合する。このため、自由状態のシールリング５では、第１係合部５４ａが第２係合部５４ｂから外れることを防止することができる。これにより、シールリング５をシャフト及びハウジングに組み付ける際の作業性が向上する。   In the seal ring 5 according to the fourth modification, in a free state, the first return portion 59a of the first engagement portion 54a and the second return portion 59b of the second engagement portion 54b are fitted to each other. For this reason, in the seal ring 5 in the free state, it is possible to prevent the first engaging portion 54a from being detached from the second engaging portion 54b. Thereby, workability | operativity at the time of attaching the seal ring 5 to a shaft and a housing improves.

（変形例５）
図１０Ａは、変形例５に係るシールリング６の合口部６０を示す斜視図である。図１０Ｂは合口部６０の第１端部６０ａを示す斜視図であり、図１０Ｃは合口部６０の第２端部６０ｂを示す斜視図である。本変形例５に係るシールリング６では、第１係合部６４ａと第２係合部６４ｂとの接触面が斜面として構成されている。 (Modification 5)
FIG. 10A is a perspective view showing the joint portion 60 of the seal ring 6 according to Modification 5. 10B is a perspective view showing the first end portion 60a of the joint portion 60, and FIG. 10C is a perspective view showing the second end portion 60b of the joint portion 60. In the seal ring 6 according to the fifth modification, the contact surface between the first engagement portion 64a and the second engagement portion 64b is configured as an inclined surface.

つまり、第１係合部６４ａには、上記実施形態に係る第１係合部１４ａを、その先端部の外周面１ａに接続する縁部から、内周面１ｂ側の垂直面１５ａに接続する縁部に向けて、斜めに切断した形状の第１斜面６９ａが形成されている。第２係合部６４ｂには、上記実施形態に係る第２係合部１４ｂにおける外周面１ａに接続する縁部と、垂直面１５ｂに接続する縁部との間を斜めに延びる第２斜面６９ｂが形成されている。   That is, the first engaging portion 64a is connected to the vertical surface 15a on the inner peripheral surface 1b side from the edge connecting to the outer peripheral surface 1a of the tip end portion of the first engaging portion 64a. A first slope 69a having an oblique cut shape is formed toward the edge. The second engaging portion 64b includes a second inclined surface 69b extending obliquely between an edge connected to the outer peripheral surface 1a and an edge connected to the vertical surface 15b in the second engaging portion 14b according to the above embodiment. Is formed.

このような構成により、シールリング６では、第１係合部６４ａの第１斜面６９ａと第２係合部６４ｂの第２斜面６９ｂとが面接触している。   With such a configuration, in the seal ring 6, the first slope 69a of the first engagement portion 64a and the second slope 69b of the second engagement portion 64b are in surface contact.

本変形例５に係るシールリング６でも、第１係合部６４ａと第２係合部６４ｂとの係合により自由状態における外径を小さく保つことができるため、良好な組み付け性が得られる。また、第１端部６０ａの第１凸部１１ａと第２端部６０ｂの第２凹部１２ｂとが垂直面１５ａ及び垂直面１５ｂの内周側の縁部に沿って隙間なく密着するため、高いシール性が得られる。   Also in the seal ring 6 according to the fifth modified example, the outer diameter in the free state can be kept small by the engagement between the first engagement portion 64a and the second engagement portion 64b, so that good assemblability can be obtained. In addition, the first convex portion 11a of the first end portion 60a and the second concave portion 12b of the second end portion 60b are in close contact with each other along the edge on the inner peripheral side of the vertical surface 15a and the vertical surface 15b. Sealability is obtained.

［その他の実施形態］
以上、本発明の実施形態について説明したが、本発明は上述の実施形態にのみ限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。 [Other Embodiments]
The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

例えば、上記実施形態に係るシールリング１では、側面１ｃ，１ｄが相互に平行な平面として構成されているが、側面１ｃ，１ｄの形状は適宜変更可能である。一例として、側面１ｃ，１ｄは内周面１ｂ側ほど相互に近接する傾斜面として構成されていてもよい。また、側面１ｃ，１ｄは、内周面１ｂ側に沿って凹形状に形成されたポケットを有する構成であってもよい。   For example, in the seal ring 1 according to the above embodiment, the side surfaces 1c and 1d are configured as planes parallel to each other, but the shapes of the side surfaces 1c and 1d can be changed as appropriate. As an example, the side surfaces 1c and 1d may be configured as inclined surfaces that are closer to each other on the inner peripheral surface 1b side. Moreover, the structure which has the pocket formed in concave shape along the inner peripheral surface 1b side may be sufficient as the side surfaces 1c and 1d.

１…シールリング
１０…合口部
１０ａ，１１ｂ…端部
１１ａ，１１ｂ…凸部
１２ａ，１２ｂ…凹部
１３ａ，１３ｂ…端面
１４ａ，１４ｂ…係合部
１５ａ，１５ｂ…垂直面
１７ａ，１７ｂ…平行面
１８ａ，１８ｂ…平行面
Ｃ…中心軸 DESCRIPTION OF SYMBOLS 1 ... Seal ring 10 ... Joint part 10a, 11b ... End part 11a, 11b ... Convex part 12a, 12b ... Concave part 13a, 13b ... End surface 14a, 14b ... Engagement part 15a, 15b ... Vertical surface 17a, 17b ... Parallel surface 18a , 18b ... parallel plane C ... central axis

Claims (2)

中心軸を中心とする環状に形成され、
前記中心軸に垂直に延びる第１垂直面と、前記第１垂直面の内周側の第１縁部から前記中心軸に平行に延びる第１平行面と、前記第１縁部から間隔をあけて前記第１垂直面に設けられた第１係合部と、を有する第１端部と、
前記中心軸に垂直に延び、前記第１垂直面に面接触する第２垂直面と、前記第２垂直面の内周側の第２縁部から前記中心軸に平行に延び、前記第１平行面に面接触する第２平行面と、前記第２縁部から間隔をあけて前記第２垂直面に設けられ、前記第１係合部に係合する第２係合部と、を有する第２端部と、
から構成される合口部を具備する
シールリング。 Formed in a ring centered on the central axis,
A first vertical surface extending perpendicularly to the central axis, a first parallel surface extending parallel to the central axis from a first edge on the inner peripheral side of the first vertical surface, and an interval from the first edge. A first end portion having a first engaging portion provided on the first vertical surface,
A second vertical surface extending perpendicularly to the central axis and in surface contact with the first vertical surface, and a second edge on the inner peripheral side of the second vertical surface, extending in parallel to the central axis, and the first parallel A second parallel surface in surface contact with the surface, and a second engagement portion provided on the second vertical surface spaced from the second edge and engaged with the first engagement portion. Two ends,
A seal ring having a joint part composed of 請求項１に記載のシールリングであって、
前記第１平行面が内周側を向き、前記第１係合部が凸形状に形成され、
前記第２平行面が外周側を向き、前記第２係合部が凹形状に形成されている
シールリング。 The seal ring according to claim 1,
The first parallel surface faces the inner peripheral side, the first engaging portion is formed in a convex shape,
The seal ring, wherein the second parallel surface faces the outer peripheral side, and the second engaging portion is formed in a concave shape.
JP2014213934A 2014-10-20 2014-10-20 Seal ring Active JP6461552B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017101689A (en) * 2015-11-30 2017-06-08 三菱電線工業株式会社 Seal ring
CN109291115A (en) * 2018-09-10 2019-02-01 帝伯爱尔株式会社 The seam processing method and seam cutter of sealing ring
KR101959014B1 (en) * 2017-10-13 2019-03-18 현대트랜시스 주식회사 Sealing structure to prevent loosening

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218466U (en) * 1985-07-17 1987-02-03
JPH06213322A (en) * 1993-01-21 1994-08-02 Riken Corp Seal ring for hydraulic apparatus
JP2002372154A (en) * 2001-06-13 2002-12-26 Nok Corp Seal ring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218466U (en) * 1985-07-17 1987-02-03
JPH06213322A (en) * 1993-01-21 1994-08-02 Riken Corp Seal ring for hydraulic apparatus
JP2002372154A (en) * 2001-06-13 2002-12-26 Nok Corp Seal ring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017101689A (en) * 2015-11-30 2017-06-08 三菱電線工業株式会社 Seal ring
KR101959014B1 (en) * 2017-10-13 2019-03-18 현대트랜시스 주식회사 Sealing structure to prevent loosening
CN109291115A (en) * 2018-09-10 2019-02-01 帝伯爱尔株式会社 The seam processing method and seam cutter of sealing ring

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