JP2004232734A - Retainer of one-way clutch - Google Patents

Retainer of one-way clutch Download PDF

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Publication number
JP2004232734A
JP2004232734A JP2003022090A JP2003022090A JP2004232734A JP 2004232734 A JP2004232734 A JP 2004232734A JP 2003022090 A JP2003022090 A JP 2003022090A JP 2003022090 A JP2003022090 A JP 2003022090A JP 2004232734 A JP2004232734 A JP 2004232734A
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JP
Japan
Prior art keywords
axial end
retainer
peripheral surface
way clutch
outer peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2003022090A
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Japanese (ja)
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JP4211411B2 (en
Inventor
Takahiro Ichihara
隆弘 市原
Hajime Watanabe
肇 渡邉
Hideki Fujiwara
英樹 藤原
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Koyo Seiko Co Ltd
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Koyo Seiko Co Ltd
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Filing date
Publication date
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Priority to JP2003022090A priority Critical patent/JP4211411B2/en
Publication of JP2004232734A publication Critical patent/JP2004232734A/en
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Publication of JP4211411B2 publication Critical patent/JP4211411B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a retainer of a one-way clutch with good assemblability. <P>SOLUTION: In this retainer 1 of the one-way clutch, when a cylindrical engagement roller 20 is inserted into a pocket 6 adjoining a coil spring 21 from an outer side to an inner side in the radial direction, an insertion position of the cylindrical engagement roller 20 in the circumferential direction can be determined by using a top part 13 approximately at an vertex of a regular decagonal column shape of an outer peripheral surface 3A of an axial end 3, as a mark. Consequently, the assemblability of the cylindrical engagement roller 20 can be improved. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、一方向クラッチの保持器に関する。
【0002】
【従来の技術】
一方向クラッチを組み立てる際には、保持器に、係合ころや係合ころを付勢するばね等を組み込むが、保持器の周方向に複数配置されたポケットに順に係合ころやばねを組み込む必要が有り、保持器のポケットへの部品装着に手間が掛かっていた。また、外周にカム面を有する内輪に保持器を装着する場合には、内輪のカム面に対して保持器の内周面を整合させるための周方向位置合わせに手間が掛かり、組立性が良くなかった。
【0003】
【特許文献1】
特開2001−140943号公報
【0004】
【発明が解決しようとする課題】
そこで、この発明の目的は、組立性の良い一方向クラッチの保持器を提供することにある。
【0005】
【課題を解決するための手段】
上記目的を達成するため、請求項1の一方向クラッチの保持器は、外周にカム面を有する内輪と、内周に円周面を有する外輪との間に係合ころを保持する一方向クラッチの保持器であって、
一方の軸方向端部は、上記内輪の上記カム面に対応した形状の内周面を有し、他方の軸方向端部は、略多角柱形状の外周面を有することを特徴としている。
【0006】
この請求項1の発明の一方向クラッチの保持器では、他方の軸方向端部が有する略多角柱形状の外周面の頂部が、係合ころの組み付け位置を決めるための目印となる。したがって、係合ころの組み付け性を向上できる。
【0007】
また、この保持器を内輪に組み付ける際には、上記他方の軸方向端部の略多角柱形状の外周面の頂部は、上記一方の軸方向端部が有する内周面を、上記内輪の外周のカム面に対して整合させるように周方向の位置決めを行うための目印となる。したがって、一方向クラッチの組立性を向上できる。
【0008】
また、請求項2の発明は、請求項1に記載の一方向クラッチの保持器において、上記他方の軸方向端部の外周面は、上記係合ころを保持する位置を略頂点とする略正多角柱形状であることを特徴としている。
【0009】
この請求項2の発明の一方向クラッチの保持器では、上記他方の軸方向端部の外周面は、上記係合ころを保持する位置を略頂点とする略正多角柱形状であるから、上記係合ころの保持位置において、上記他方の軸方向端部の径方向の厚さを最大にでき、係合ころを軸方向に支持する部分の面積を大きくして、係合ころの保持力を向上できる。
【0010】
【発明の実施の形態】
以下、この発明を図示の実施の形態に基いて詳細に説明する。
【0011】
図1(C)に、この発明の実施形態としての一方向クラッチの保持器1を軸方向の一方から他方に見た様子を示し、図1(A)に上記保持器1を軸方向の他方から一方に見た様子を示す。また、図1(B)に、図1(A)のA−A’断面を示す。
【0012】
図1(B)に示すように、この保持器1は、一方の軸方向端部2と他方の軸方向端部3を有し、この軸方向端部2と軸方向端部3との間に軸方向に延びる10本の柱部5,5…が、周方向に所定の間隔を隔てて形成されている。隣接する柱部5と柱部5との間がポケット6になっており、保持器1はポケット6を10個有する。また、この柱部5は、軸方向の略中央で周方向に突出したスプリングガイド8を有する。なお、この実施形態では、保持器1を樹脂製としたが、金属製またはセラミック製であってもよい。
【0013】
図1(C)に示すように、上記一方の軸方向端部2は、略正10角柱形状の内周面2Aを有している。また、この軸方向端部2は、円筒形の外周面2Bを有している。また、この軸方向端部2は、径方向内方かつ軸方向内方に窪んだ外周縁部7を有する。また、この軸方向端部2は、上記スプリングガイド8に対応する周方向位置に10個の台形状穴部10を有している。この台形状穴部10は、軸方向端部2の軸方向の外方の端面2Cに形成されている。また、図1(B)に示すように、この軸方向端部2の端面2Cは、内周側縁部が軸方向外方に向って径が大きくなるテーパ面11になっている。
【0014】
また、図1(A)に示すように、上記他方の軸方向端部3は、外周面3Aが略正10角柱形状であり、この正10角柱形状のほぼ頂点の部分で僅かに湾曲した頂部13の位置が係合ころ20の配置位置になっている。また、この軸方向端部3の外周面3Aの外径は、軸方向端部2の外周面2Bの外径よりも小さい。また、この軸方向端部3の内周面3Bは円筒形であり、上記軸方向端部2の内周面2Aよりも小径である。
【0015】
上記構成の保持器1は、まず、上記柱部5が有するスプリングガイド8に、図2に示すように、コイルバネ21が装着される。
【0016】
次に、円筒係合ころ20が、ポケット6内のコイルバネ21に隣接する箇所に、径方向外方から内方へ挿入される。このとき、図1(A)に示す上記軸方向端部3の外周面3Aの正10角柱形状のほぼ頂点の頂部13を目印として、円筒係合ころ20の周方向の挿入位置を決ることができる。したがって、円筒係合ころ20の組付性を向上できる。
【0017】
また、この実施形態の一方向クラッチの保持器1では、上記他方の軸方向端部3の外周面3Aは、円筒係合ころ20を保持する位置を略頂部13の位置とする略正10角柱形状であるから、円筒係合ころ20を保持する位置において、上記他方の軸方向端部3の径方向の厚さを最大にでき、円筒係合ころ20の端面20Aを軸方向に支持する部分の面積を大きくして、円筒係合ころ20の保持力を向上できる。
【0018】
図2に示すように、上記保持器1にコイルバネ21と円筒係合ころ20が組み込まれた一方向クラッチ30は、内輪31が外周に有する略正10角柱形状のカム面31Aに、保持器1の一方の軸方向端部2のテーパ面11を沿わせながら、軸方向端部2の略正10角柱形状の内周面2Aを、軸方向の一方から挿入し嵌合させる。同時に、軸方向端部2の円筒形の外周面2Bおよび軸方向端部3の略正10角柱形状の外周面3Aは、外輪32が内周に有する円筒形状の内周面32Aに挿入される。
【0019】
上記のように、一方向クラッチ30を内輪31に組み付ける際には、保持器1の上記他方の軸方向端部3の略正10角柱形状の外周面3Aのほぼ頂点の頂部13は、周方向の位置決めを行うための目印となり、上記一方の軸方向端部2が有する略正10角柱形状の内周面2Aを、内輪31の外周の略正10角柱形状のカム面31Aに対して整合させて挿入し易くできる。したがって、一方向クラッチの組立性を向上できる。
【0020】
こうして、外輪32と内輪31との間に組み付けられた一方向クラッチ30は、内輪31に対して矢印Bの反時計回り方向への外輪32の回転を許す一方、内輪31に対して矢印Cの時計回りの方向へ外輪32が回転しようとすると、外輪32の内周面32Aと内輪31のカム面31Aとの間における円筒係合ころ20のくさび作用でもって、内輪31に対して外輪32が相対回転不可となる。
【0021】
尚、上記実施形態では、内輪31のカム面31Aが略正10角柱形状である場合に適合する保持器1を説明し、内輪31の外周の略正10角柱形状のカム面31Aの形状に合わせて、一方の軸方向端部2の内周面2Aを、略正10角柱形状にしたが、内輪のカム面の形状は、略正12角柱形状、略正8角柱形状あるいはそれ以外の正多角柱形状、さらには正多角柱形状以外の多角柱形状であっても、本発明の保持器を適用可能なことは勿論である。つまり、一方の軸方向端部2の内周面2Aの形状は、内輪のカム面に対応した正多角柱形状または正多角柱形状以外の多角柱形状とすればよい。
【0022】
また、他方の軸方向端部3の外周面3Aは、上記内輪のカム面に対応した多角柱形状の一方の軸方向端部2の内周面2Aの角数に応じた略多角柱形状とすればよい。このように、他方の軸方向端部3が有する略多角柱形状の外周面3Aは軸直角面による切断形状が略多角形状となり、外周面の頂部を周方向位置決めのための目印とすることが可能である。
【0023】
【発明の効果】
以上より明らかなように、この発明の一方向クラッチの保持器では、他方の軸方向端部が有する略多角柱形状の外周面の頂部が、係合ころの組み付け位置を決めるための目印となるので、係合ころの組み付け性を向上できる。
【0024】
また、この保持器を内輪に組み付ける際には、上記他方の軸方向端部の略多角柱形状の外周面の頂部は、一方の軸方向端部が有する内周面を、内輪の外周のカム面に対して周方向の位置決めを行うための目印とすることができ、一方向クラッチの組立性を向上できる。
【図面の簡単な説明】
【図1】図1(A)はこの発明の一方向クラッチの保持器の実施形態を軸方向の一方から他方に見た様子を示す側面図であり、図1(B)は図1(A)のA−A’断面図であり、図1(C)は上記実施形態を軸方向の他方から一方に見た様子を示す側面図である。
【図2】上記実施形態の保持器を含む一方向クラッチを内輪と外輪の間に組み込んだ様子を示す半断面図である。
【符号の説明】
1 保持器
2 一方の軸方向端部
2A 内周面
2B 外周面
3 他方の軸方向端部
3A 外周面
3B 内周面
5 柱部
6 ポケット
8 スプリングガイド
13 頂部
20 円筒係合ころ
21 コイルバネ
30 一方向クラッチ
31 内輪
31A カム面
32 外輪
32A 内周面
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a one-way clutch retainer.
[0002]
[Prior art]
When assembling the one-way clutch, the retainer incorporates engaging rollers and springs for biasing the engaging rollers, but the engaging rollers and springs are incorporated into pockets arranged in the circumferential direction of the retainer in order. It was necessary and it took time to mount the parts in the cage pockets. Further, when the retainer is mounted on the inner ring having the cam surface on the outer periphery, it takes time and effort to perform circumferential alignment for aligning the inner peripheral surface of the retainer with the cam surface of the inner ring, thereby improving the assembling property. Did not.
[0003]
[Patent Document 1]
JP 2001-140943 A
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a one-way clutch retainer with good assemblability.
[0005]
[Means for Solving the Problems]
To achieve the above object, a one-way clutch retainer according to claim 1, wherein the one-way clutch retains an engagement roller between an inner ring having a cam surface on an outer periphery and an outer ring having a circumferential surface on an inner periphery. The retainer of
One axial end has an inner peripheral surface having a shape corresponding to the cam surface of the inner race, and the other axial end has an outer peripheral surface having a substantially polygonal column shape.
[0006]
In the retainer of the one-way clutch according to the first aspect of the present invention, the top of the outer peripheral surface of the substantially polygonal prism shape of the other axial end serves as a mark for determining the assembling position of the engagement roller. Therefore, the assemblability of the engagement rollers can be improved.
[0007]
Also, when assembling the retainer to the inner ring, the top of the outer peripheral surface of the substantially polygonal column shape at the other axial end is formed with the inner peripheral surface of the one axial end at the outer periphery of the inner ring. This mark serves as a mark for positioning in the circumferential direction so as to be aligned with the cam surface. Therefore, the assemblability of the one-way clutch can be improved.
[0008]
According to a second aspect of the present invention, in the retainer of the one-way clutch according to the first aspect, the outer peripheral surface of the other axial end has a substantially normal position where a position for holding the engagement roller is substantially a vertex. It is characterized by a polygonal pillar shape.
[0009]
In the retainer for a one-way clutch according to the second aspect of the present invention, the outer peripheral surface of the other axial end has a substantially regular polygonal column shape having a position at which the engagement roller is retained as a substantially apex. At the engaging roller holding position, the radial thickness of the other axial end can be maximized, the area of the portion that supports the engaging roller in the axial direction can be increased, and the holding force of the engaging roller can be reduced. Can be improved.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
[0011]
FIG. 1C shows a one-way clutch retainer 1 as an embodiment of the present invention viewed from one side in the axial direction to the other side, and FIG. From one side to the other. FIG. 1B illustrates a cross section taken along line AA ′ of FIG.
[0012]
As shown in FIG. 1 (B), the retainer 1 has one axial end 2 and the other axial end 3, and between the axial end 2 and the axial end 3. Are formed at predetermined intervals in the circumferential direction. A pocket 6 is formed between the adjacent pillar portions 5, and the cage 1 has ten pockets 6. The column portion 5 has a spring guide 8 protruding in the circumferential direction substantially at the center in the axial direction. In this embodiment, the cage 1 is made of resin, but may be made of metal or ceramic.
[0013]
As shown in FIG. 1C, the one axial end 2 has an inner peripheral surface 2A having a substantially regular decagonal prism shape. The axial end 2 has a cylindrical outer peripheral surface 2B. The axial end 2 has an outer peripheral edge 7 that is recessed radially inward and axially inward. The axial end 2 has ten trapezoidal holes 10 at circumferential positions corresponding to the spring guides 8. The trapezoidal hole 10 is formed in an axially outer end face 2 </ b> C of the axial end 2. As shown in FIG. 1B, the end surface 2C of the axial end portion 2 is a tapered surface 11 in which the inner peripheral edge increases in diameter toward the outside in the axial direction.
[0014]
As shown in FIG. 1 (A), the other axial end 3 has an outer peripheral surface 3A having a substantially regular octagonal prism shape, and a slightly curved top portion at a vertex portion of the regular octagonal prism shape. The position of 13 is the arrangement position of the engagement roller 20. The outer diameter of the outer peripheral surface 3A of the axial end 3 is smaller than the outer diameter of the outer peripheral surface 2B of the axial end 2. The inner peripheral surface 3B of the axial end 3 is cylindrical and has a smaller diameter than the inner peripheral surface 2A of the axial end 2.
[0015]
In the cage 1 having the above configuration, first, as shown in FIG. 2, a coil spring 21 is mounted on the spring guide 8 of the column 5.
[0016]
Next, the cylindrical engagement roller 20 is inserted into the pocket 6 from the outside in the radial direction to the location adjacent to the coil spring 21. At this time, the insertion position of the cylindrical engaging roller 20 in the circumferential direction can be determined by using the top 13 of the substantially apex of the regular decagonal prism on the outer peripheral surface 3A of the axial end 3 shown in FIG. it can. Therefore, the assemblability of the cylindrical engagement roller 20 can be improved.
[0017]
Further, in the retainer 1 of the one-way clutch of this embodiment, the outer peripheral surface 3A of the other axial end portion 3 is a substantially regular octagonal prism having a position where the cylindrical engagement roller 20 is retained as a position of the top portion 13. Due to the shape, the radial thickness of the other axial end 3 can be maximized at the position where the cylindrical engaging roller 20 is held, and the end surface 20A of the cylindrical engaging roller 20 is axially supported. , The holding force of the cylindrical engagement roller 20 can be improved.
[0018]
As shown in FIG. 2, the one-way clutch 30 in which the coil spring 21 and the cylindrical engagement roller 20 are incorporated in the retainer 1 has a substantially regular decagonal pillar-shaped cam surface 31 </ b> A provided on the outer periphery of the inner race 31. Along the tapered surface 11 of one of the axial ends 2, the inner peripheral surface 2A of the substantially regular decagonal prism shape of the axial end 2 is inserted and fitted from one side in the axial direction. At the same time, the cylindrical outer peripheral surface 2B of the axial end portion 2 and the substantially regular octagonal prism-shaped outer peripheral surface 3A of the axial end portion 3 are inserted into the cylindrical inner peripheral surface 32A that the outer ring 32 has on the inner periphery. .
[0019]
As described above, when assembling the one-way clutch 30 to the inner race 31, the top 13 of the substantially apex of the outer peripheral surface 3A of the substantially regular decagonal prism of the other axial end 3 of the retainer 1 is in the circumferential direction. Aligning the substantially regular decagonal inner surface 2A of the one axial end 2 with the substantially regular decagonal cam surface 31A of the outer periphery of the inner ring 31. Can be easily inserted. Therefore, the assemblability of the one-way clutch can be improved.
[0020]
Thus, the one-way clutch 30 assembled between the outer race 32 and the inner race 31 allows the inner race 31 to rotate the outer race 32 in the counterclockwise direction indicated by the arrow B, while the inner race 31 indicates the rotation indicated by the arrow C. When the outer ring 32 tries to rotate in the clockwise direction, the outer ring 32 is rotated with respect to the inner ring 31 by the wedge action of the cylindrical engagement roller 20 between the inner peripheral surface 32A of the outer ring 32 and the cam surface 31A of the inner ring 31. Relative rotation becomes impossible.
[0021]
In the above-described embodiment, the retainer 1 which is adapted to the case where the cam surface 31A of the inner race 31 has a substantially regular decagonal prism shape is described, and is adapted to the shape of the substantially regular decagonal cam shape 31A on the outer periphery of the inner race 31. Thus, the inner peripheral surface 2A of one axial end portion 2 has a substantially regular decagonal prism shape, but the cam surface of the inner ring may have a substantially regular decagonal prism shape, a substantially regular octagonal prism shape, or other regular polygonal shapes. It is a matter of course that the retainer of the present invention can be applied to a prism shape, and even a polygonal shape other than a regular polygonal shape. That is, the shape of the inner peripheral surface 2A of the one axial end portion 2 may be a regular polygonal column shape corresponding to the cam surface of the inner ring or a polygonal column shape other than the regular polygonal column shape.
[0022]
The outer peripheral surface 3A of the other axial end 3 has a polygonal column shape corresponding to the number of angles of the inner peripheral surface 2A of one axial end 2 of the polygonal column shape corresponding to the cam surface of the inner ring. do it. As described above, the outer peripheral surface 3A of the substantially polygonal column shape of the other axial end 3 has a substantially polygonal shape cut by a plane perpendicular to the axis, and the top of the outer peripheral surface may be used as a mark for circumferential positioning. It is possible.
[0023]
【The invention's effect】
As is apparent from the above description, in the cage of the one-way clutch of the present invention, the top of the outer peripheral surface of the substantially polygonal column shape of the other axial end serves as a mark for determining the mounting position of the engagement roller. Therefore, the assemblability of the engagement rollers can be improved.
[0024]
Also, when assembling this retainer to the inner ring, the top of the outer peripheral surface of the substantially polygonal column shape at the other axial end, the inner peripheral surface of the one axial end has a cam on the outer periphery of the inner ring. It can be used as a mark for positioning in the circumferential direction with respect to the surface, and the assemblability of the one-way clutch can be improved.
[Brief description of the drawings]
FIG. 1A is a side view showing an embodiment of a retainer of a one-way clutch of the present invention viewed from one side in the axial direction to the other side, and FIG. 1B is a side view showing FIG. 1) is a cross-sectional view taken along the line AA ′, and FIG. 1 (C) is a side view showing the above embodiment viewed from one side in the axial direction.
FIG. 2 is a half sectional view showing a state in which a one-way clutch including a retainer according to the embodiment is incorporated between an inner ring and an outer ring.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cage 2 One axial end 2A Inner peripheral surface 2B Outer peripheral surface 3 The other axial end 3A Outer peripheral surface 3B Inner peripheral surface 5 Column 6 Pocket 8 Spring guide 13 Top 20 Cylindrical engaging roller 21 Coil spring 30 One Direction clutch 31 Inner ring 31A Cam surface 32 Outer ring 32A Inner peripheral surface

Claims (2)

外周にカム面を有する内輪と、内周に円周面を有する外輪との間に係合ころを保持する一方向クラッチの保持器であって、
一方の軸方向端部は、上記内輪の上記カム面に対応した形状の内周面を有し、他方の軸方向端部は、略多角柱形状の外周面を有することを特徴とする一方向クラッチの保持器。
An inner ring having a cam surface on an outer periphery, and a retainer of a one-way clutch for holding an engagement roller between an outer ring having a circumferential surface on an inner periphery,
The one axial end has an inner peripheral surface having a shape corresponding to the cam surface of the inner race, and the other axial end has an outer peripheral surface having a substantially polygonal column shape. Clutch retainer.
請求項1に記載の一方向クラッチの保持器において、
上記他方の軸方向端部の外周面は、上記係合ころを保持する位置を略頂点とする略正多角柱形状であることを特徴とする一方向クラッチの保持器。
The retainer for the one-way clutch according to claim 1,
A retainer for a one-way clutch, wherein an outer peripheral surface of the other axial end has a substantially regular polygonal prism shape having a position at which the engagement roller is retained at a substantially apex.
JP2003022090A 2003-01-30 2003-01-30 One-way clutch cage Expired - Fee Related JP4211411B2 (en)

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JP2003022090A JP4211411B2 (en) 2003-01-30 2003-01-30 One-way clutch cage

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JP2004232734A true JP2004232734A (en) 2004-08-19
JP4211411B2 JP4211411B2 (en) 2009-01-21

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