JP3698169B2 - Coupling - Google Patents

Coupling Download PDF

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Publication number
JP3698169B2
JP3698169B2 JP11185294A JP11185294A JP3698169B2 JP 3698169 B2 JP3698169 B2 JP 3698169B2 JP 11185294 A JP11185294 A JP 11185294A JP 11185294 A JP11185294 A JP 11185294A JP 3698169 B2 JP3698169 B2 JP 3698169B2
Authority
JP
Japan
Prior art keywords
boss
cylindrical portion
pulley
peripheral side
elastic body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP11185294A
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Japanese (ja)
Other versions
JPH07301305A (en
Inventor
義彦 大島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok Corp filed Critical Nok Corp
Priority to JP11185294A priority Critical patent/JP3698169B2/en
Publication of JPH07301305A publication Critical patent/JPH07301305A/en
Application granted granted Critical
Publication of JP3698169B2 publication Critical patent/JP3698169B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【0001】
【産業上の利用分野】
本発明は、カップリングに関する。本発明のカップリングは主に、自動車用のオルタネータに用いられる。
【0002】
【従来の技術】
実公平3−15875号公報に掲載された公知のカップリングにおいては、図2に示すように、ボス21、弾性体22およびプーリ23の三部材が径方向に直列的に並べられているために、当該カップリング全体として、径方向占有スペースが大きい問題がある。
【0003】
【発明が解決しようとする課題】
本発明は以上の点に鑑み、この種のカップリングにおいて、径方向占有スペースを従来より小さくすることを目的とする。
【0004】
【課題を解決するための手段】
上記目的を達成するため、本発明のカップリングは、ボスの外周側に摺動部材を介してプーリを回転自在に接続するとともに前記ボスと前記プーリを弾性体を介して接続してなり、取付ボルトをもって取付箇所に取り付けられるカップリングにおいて、前記取付ボルトにて前記取付箇所に固定される環状のボス本体に対して前記取付ボルトの外周側に所定の径方向間隙を介して配置される円筒部を一体成形したボスと、前記円筒部の外周側に配置された摺動部材と、前記摺動部材の更に外周側に配置され、前記ボスに対して相対回転するプーリと、前記円筒部の内周側であって前記摺動部材とは軸方向同位置に嵌合され、前記円筒部から軸方向に突出する軸方向突出部を一体成形したインナースリーブと、前記軸方向突出部およびプーリ間に介装された弾性体とを有し、前記ボスと前記弾性体とは軸方向横並びに配置されていることにした。
【0005】
【作用】
弾性体は、捩れ変形するというその機能上、径方向長さ(図2における長さx)について或る程度大きなボリュームを備えており、このように大きなボリュームを備えた弾性体がボスとプーリの間に直列的に介装されていたために、従来技術においては、カップリング全体としての径方向占有スペースが大きくならざるを得なかった。これに対して本発明によれば、このような弾性体がボスに対して軸方向に並べられ、すなわち、径方向についてボスと並列的に並べられているために、この分、径方向占有スペースを従来より小さくすることが可能となる。
【0006】
【実施例】
つぎに本発明の実施例を図面にしたがって説明する。
【0007】
図1に示すように、ボス1が、環状のボス本体1aと、このボス本体1aに対して同心上に一体成形された円筒部1bとを備えており、この円筒部1bの外周側にボールベアリング等の所要数の摺動部材2が嵌着され、この摺動部材2の外周側に、外周面にプーリ溝3aを備えたプーリ3が、ボス1に対して回転自在に嵌着されている。摺動部材2は、ボールベアリングの他、図2に例示したようなブッシュであっても良い。
【0008】
ボス1の円筒部1bの内周側に板金製のインナースリーブ4が嵌着され、プーリ3の内周側に同じく板金製のアウタースリーブ5が嵌着され、この両スリーブ4,5の間にゴム状弾性材製の弾性体6が介装され、この弾性体6が、ボス1の円筒部1bに対して軸方向に並べられている。
【0009】
インナースリーブ4は、半裁断面略L字形を呈して、円筒状部4aと、この円筒状部4aの軸方向一端部に一体成形された内向きのフランジ部4bとを備えており、このフランジ部4bがボス本体1aの軸方向端面に当接する迄、ボス1の円筒部1bの内周側に軸方向一方から嵌合され、この嵌合完了状態において、ボス1の円筒部1bの軸方向先端部(図上左端部)から更に同先端方向(図上左側)へ突出した、軸方向長さyの軸方向突出部4cを円筒状部4aの一部として備えており、この軸方向突出部4cの外周面に弾性体6が加硫接着されている。一方、内周面に弾性体6を加硫接着したアウタースリーブ5は、単純な円筒形であるが、プーリ3の内周面に摺動部材2と並んで嵌着されることにより、この摺動部材2を位置決めする機能を備えており、もって位置決め用の専用部材であるC形の止め輪を不要としている。
【0010】
上記構成のカップリングは、取付ボルト7をボス1の内周側に差し通して、この取付ボルト7をもって所定の装着箇所に装着されるが、この装着時に、取付ボルト7の頭部とボス本体1aの間にインナースリーブ4のフランジ部4bが挾み込まれるために、このインナースリーブ4のボス1に対する固定が強固なものとなっている。また径方向長さ(図1における長さx)について或る程度大きなボリュームを備えた弾性体6がボス1の円筒部1bに対して軸方向に並べられ、すなわち、径方向についてボス1の円筒部1bと並列的に並べられているために、この分、径方向占有スペースが従来より小さなものとなっている。また作動時に弾性体6に発生する熱がインナースリーブ4の軸方向突出部4cを介して外部に放出されて、弾性体6からボス1に伝わりにくくなっているために、蓄熱が防止される。
【0011】
【発明の効果】
本発明は、以下の効果を奏する。
すなわち、弾性体をボスの円筒部に対して軸方向に並べ、すなわち、弾性体を径方向についてボスの円筒部と並列的に並べたために、この分、径方向占有スペースを従来より小さなものとすることができる。また作動時に弾性体に発生する熱がスリーブの軸方向突出部を介して外部に放出されて、弾性体からボスに伝わりにくくなっているために、蓄熱を防止することができる。
【図面の簡単な説明】
【図1】本発明の実施例に係るカップリングの断面図
【図2】従来例に係るカップリングの断面図
【符号の説明】
1 ボス
1a ボス本体
1b 円筒部
2 摺動部材
3 プーリ
3a プーリ溝
4 インナースリーブ(スリーブ)
4a 円筒状部
4b フランジ部
4c 軸方向突出部
5 アウタースリーブ
6 弾性体
7 取付ボルト
[0001]
[Industrial application fields]
The present invention relates to a coupling. The coupling of the present invention is mainly used for an alternator for an automobile.
[0002]
[Prior art]
In the known coupling published in Japanese Utility Model Publication No. 3-15875, the three members of the boss 21, the elastic body 22, and the pulley 23 are arranged in series in the radial direction as shown in FIG. As a whole, there is a problem that the occupied space in the radial direction is large.
[0003]
[Problems to be solved by the invention]
In view of the above points, the present invention has an object of reducing the space occupied in the radial direction in this type of coupling.
[0004]
[Means for Solving the Problems]
To achieve the above object, the coupling of the present invention, constituted by connecting the pulley and the boss with the outer peripheral side of the boss via the sliding member connected rotatably to the pulley through the elastic body, mounted In a coupling that is attached to a mounting location with a bolt, a cylindrical portion that is disposed on the outer peripheral side of the mounting bolt via a predetermined radial gap with respect to an annular boss body that is fixed to the mounting location with the mounting bolt A boss integrally formed, a sliding member disposed on the outer peripheral side of the cylindrical portion, a pulley disposed further on the outer peripheral side of the sliding member and rotating relative to the boss, and an inner portion of the cylindrical portion An inner sleeve, which is a circumferential side and is fitted at the same position in the axial direction with the sliding member and integrally formed with an axial protruding portion protruding in the axial direction from the cylindrical portion, and between the axial protruding portion and the pulley And a instrumentation and elastic bodies were to be disposed axially side by side and the elastic member and the boss.
[0005]
[Action]
The elastic body has a large volume with respect to its radial length (length x in FIG. 2) due to its function of torsional deformation, and the elastic body having such a large volume is formed by the boss and the pulley. In the prior art, the occupied space in the radial direction as a whole of the coupling has to be increased because it is interposed in series. On the other hand, according to the present invention, since such elastic bodies are arranged in the axial direction with respect to the boss, that is, arranged in parallel with the boss in the radial direction, the space occupied in the radial direction accordingly. Can be made smaller than before.
[0006]
【Example】
Next, embodiments of the present invention will be described with reference to the drawings.
[0007]
As shown in FIG. 1, the boss 1 includes an annular boss main body 1a and a cylindrical portion 1b integrally formed concentrically with the boss main body 1a, and a ball is provided on the outer peripheral side of the cylindrical portion 1b. A required number of sliding members 2 such as bearings are fitted, and a pulley 3 having a pulley groove 3 a on the outer peripheral surface is rotatably fitted to the boss 1 on the outer peripheral side of the sliding member 2. Yes. The sliding member 2 may be a bush as illustrated in FIG. 2 in addition to a ball bearing.
[0008]
An inner sleeve 4 made of sheet metal is fitted on the inner peripheral side of the cylindrical portion 1 b of the boss 1, and an outer sleeve 5 made of sheet metal is also fitted on the inner peripheral side of the pulley 3. An elastic body 6 made of a rubber-like elastic material is interposed, and the elastic body 6 is arranged in the axial direction with respect to the cylindrical portion 1 b of the boss 1.
[0009]
The inner sleeve 4 has a substantially L-shaped cross section, and includes a cylindrical portion 4a and an inward flange portion 4b integrally formed at one axial end of the cylindrical portion 4a. 4b is fitted to the inner peripheral side of the cylindrical portion 1b of the boss 1 from one axial direction until it abuts against the axial end surface of the boss main body 1a. In this fitting completed state, the axial tip of the cylindrical portion 1b of the boss 1 is fitted. An axial projecting portion 4c having an axial length y projecting further from the portion (left end portion in the figure) in the tip direction (left side in the figure) is provided as a part of the cylindrical portion 4a. The elastic body 6 is vulcanized and bonded to the outer peripheral surface of 4c. On the other hand, the outer sleeve 5 in which the elastic body 6 is vulcanized and bonded to the inner peripheral surface has a simple cylindrical shape, but is fitted to the inner peripheral surface of the pulley 3 side by side with the sliding member 2, so A function for positioning the moving member 2 is provided, so that a C-shaped retaining ring which is a dedicated member for positioning is not required.
[0010]
In the coupling having the above-described configuration, the mounting bolt 7 is inserted into the inner peripheral side of the boss 1 and the mounting bolt 7 is mounted at a predetermined mounting location. At the time of mounting, the head of the mounting bolt 7 and the boss body Since the flange portion 4b of the inner sleeve 4 is squeezed between 1a, the inner sleeve 4 is firmly fixed to the boss 1. In addition, the elastic bodies 6 having a certain volume with respect to the length in the radial direction (length x in FIG. 1) are arranged in the axial direction with respect to the cylindrical portion 1b of the boss 1, that is, the cylinder of the boss 1 in the radial direction. Since they are arranged in parallel with the portion 1b, the radial occupied space is smaller than the conventional one. Further, since heat generated in the elastic body 6 during operation is released to the outside through the axial protruding portion 4c of the inner sleeve 4 and is not easily transmitted from the elastic body 6 to the boss 1, heat storage is prevented.
[0011]
【The invention's effect】
The present invention has the following effects.
That is, the elastic body is arranged in the axial direction with respect to the cylindrical portion of the boss, that is, the elastic body is arranged in parallel with the cylindrical portion of the boss in the radial direction. can do. In addition, heat generated in the elastic body during operation is released to the outside through the axial projecting portion of the sleeve and is difficult to be transmitted from the elastic body to the boss, so heat storage can be prevented.
[Brief description of the drawings]
FIG. 1 is a sectional view of a coupling according to an embodiment of the present invention. FIG. 2 is a sectional view of a coupling according to a conventional example.
DESCRIPTION OF SYMBOLS 1 Boss 1a Boss main body 1b Cylindrical part 2 Sliding member 3 Pulley 3a Pulley groove 4 Inner sleeve (sleeve)
4a Cylindrical part 4b Flange part 4c Axial protruding part 5 Outer sleeve 6 Elastic body 7 Mounting bolt

Claims (1)

ボス(1)の外周側に摺動部材(2)を介してプーリ(3)を回転自在に接続するとともに前記ボス(1)と前記プーリ(3)を弾性体(6)を介して接続してなり、取付ボルト(7)をもって取付箇所に取り付けられるカップリングにおいて、
前記取付ボルト(7)にて前記取付箇所に固定される環状のボス本体(1a)に対して前記取付ボルト(7)の外周側に所定の径方向間隙を介して配置される円筒部(1b)を一体成形したボス(1)と、
前記円筒部(1b)の外周側に配置された摺動部材(2)と、
前記摺動部材(2)の更に外周側に配置され、前記ボス(1)に対して相対回転するプーリ(3)と、
前記円筒部(1b)の内周側であって前記摺動部材(2)とは軸方向同位置に嵌合され、前記円筒部(1b)から軸方向に突出する軸方向突出部(4c)を一体成形したインナースリーブ(4)と、
前記軸方向突出部(4c)およびプーリ(3)間に介装された弾性体(6)とを有し、
前記ボス(1)と前記弾性体(6)とは軸方向横並びに配置されていることを特徴とするカップリング。
A pulley (3) is rotatably connected to the outer peripheral side of the boss (1) via a sliding member (2), and the boss (1) and the pulley (3) are connected via an elastic body (6). In the coupling that is attached to the mounting location with the mounting bolt (7) ,
A cylindrical portion (1b) disposed on the outer peripheral side of the mounting bolt (7) via a predetermined radial gap with respect to the annular boss body (1a) fixed to the mounting location by the mounting bolt (7). ) (1) integrally molded),
A sliding member (2) disposed on the outer peripheral side of the cylindrical portion (1b);
A pulley (3) disposed on the outer peripheral side of the sliding member (2) and rotating relative to the boss (1);
An axially projecting portion (4c) which is fitted on the inner peripheral side of the cylindrical portion (1b) and at the same axial position as the sliding member (2) and projects axially from the cylindrical portion (1b). An inner sleeve (4) integrally molded with
An elastic body (6) interposed between the axial protrusion (4c) and the pulley (3),
The coupling characterized in that the boss (1) and the elastic body (6) are arranged side by side in the axial direction .
JP11185294A 1994-04-28 1994-04-28 Coupling Expired - Lifetime JP3698169B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11185294A JP3698169B2 (en) 1994-04-28 1994-04-28 Coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11185294A JP3698169B2 (en) 1994-04-28 1994-04-28 Coupling

Publications (2)

Publication Number Publication Date
JPH07301305A JPH07301305A (en) 1995-11-14
JP3698169B2 true JP3698169B2 (en) 2005-09-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP11185294A Expired - Lifetime JP3698169B2 (en) 1994-04-28 1994-04-28 Coupling

Country Status (1)

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JP (1) JP3698169B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19643687A1 (en) * 1996-10-23 1998-04-30 Freudenberg Carl Fa Torsionally flexible coupling
US10174804B2 (en) 2015-12-10 2019-01-08 GM Global Technology Operations LLC Torsional vibration absorber for a vehicle

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JPH07301305A (en) 1995-11-14

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