JPH0540334Y2

JPH0540334Y2 -

Info

Publication number: JPH0540334Y2
Application number: JP6136888U
Authority: JP
Priority date: 1988-05-10
Filing date: 1988-05-10
Publication date: 1993-10-13
Anticipated expiration: 2003-05-10
Also published as: JPH01165337U

Description

[Detailed explanation of the idea] [Industrial application field]

本考案は、ラジアル滑り軸受を内蔵したワンウ
エイクラツチに関する。 The present invention relates to a one-way clutch incorporating a radial sliding bearing.

[Prior art and its problems]

薄肉鋼板製の外輪にラジアル滑り軸受を内蔵し
たワンウエイクラツチとして、実開昭55−14178
号に示されるものがある。この従来のワンウエイクラツチにおいては、薄
肉鋼板製外輪の軸方向中央部の内周に傾斜カム面
を形成し、この部分に保持器、円筒ころ等を嵌合
してワンウエイクラツチ機構を構成し、このワン
ウエイクラツチ機構の軸方向両側にラジアル滑り
軸受を嵌合させたものである。このワンウエイク
ラツチにおいては、外輪の中央部の傾斜カム面を
形成した部分の両側を円筒面で大径に削除し、こ
の円筒面にラジアル滑り軸受が圧入嵌合されてい
る。従来のワンウエイクラツチでは、傾斜カム面を
外輪の軸方向中央部の内面だけに形成し、その両
側の軸受嵌合面を大径の円筒面に仕上げる必要が
あり、加工が煩雑であり、かつ薄肉鋼板製の外輪
に大径の円筒面を形成した部分の肉厚が少なくな
り、強度，剛性の低下を招く。また、薄肉鋼板製の外輪にラジアル滑り軸受を
圧入すると、外輪の外径寸法に変動が生じ、更に
隣接する傾斜カム面の寸法にも影響を及ぼす等の
問題点を有している。 As a one-way clutch with a built-in radial sliding bearing in the outer ring made of thin-walled steel plate, it was developed in 1986-14178.
There is something indicated in the number. In this conventional one-way clutch, an inclined cam surface is formed on the inner periphery of the axially central portion of the outer ring made of thin steel plate, and a retainer, cylindrical rollers, etc. are fitted to this portion to constitute the one-way clutch mechanism. Radial sliding bearings are fitted on both sides of the one-way clutch mechanism in the axial direction. In this one-way clutch, both sides of the central portion of the outer race where the inclined cam surface is formed are cut out to have large diameter cylindrical surfaces, and a radial sliding bearing is press-fitted into the cylindrical surfaces. In conventional one-way clutches, the inclined cam surface is formed only on the inner surface of the axial center of the outer ring, and the bearing fitting surfaces on both sides of the cam surface need to be finished into large-diameter cylindrical surfaces, resulting in complicated machining and thin walls. The wall thickness of the portion where the large-diameter cylindrical surface is formed on the steel plate outer ring decreases, resulting in a decrease in strength and rigidity. Further, when a radial sliding bearing is press-fitted into an outer ring made of a thin steel plate, there is a problem in that the outer diameter of the outer ring fluctuates, which also affects the dimensions of the adjacent inclined cam surface.

[Means to solve the problem]

前記の問題点を解決するために、この考案は、
薄肉鋼板からなり、内周円筒面に複数の傾斜カム
面を形成した外輪と、この外輪内に記され外輪に
対して回り止めされ、かつ前記傾斜カム面に対応
する位置にポケツトを有する保持器と、前記ポケ
ツトに収容された円筒ころと、この円筒ころを前
記傾斜カム面に向かつて押圧するばねとからワン
ウエイクラツチ機構を構成し、このワンウエイク
ラツチ機構と軸方向に隣接して、ラジアル滑り軸
受を設けてなるワンウエイクラツチにおいて、前
記外輪の内周円筒面に形成する傾斜カム面を前記
保持器の軸方向幅よりも長く形成し、かつ前記ラ
ジアル滑り軸受の外周を前記外輪の内周円筒面に
すきま嵌めされる円筒面部とこの円筒面部から適
数箇所突出する突出部とで形成し、この突出部を
前記傾斜カム面に係合させたものである。ラジアル滑り軸受の嵌合面を外輪に別途加工す
る必要がなく加工が容易であり、かつ嵌合面の部
分の肉厚の減少がなく、強度，剛性面で優れてい
る。また、ラジアル滑り軸受は、外輪の内周面にす
きは嵌めされるので、薄肉鋼板製の外輪の外径寸
法の変動がなく、更に隣接する傾斜カム面の寸法
にも悪影響を及ぼさず、高精度の製品が得られる
と共に組立作業が容易である。 In order to solve the above problems, this invention
An outer ring made of a thin steel plate and having a plurality of inclined cam surfaces formed on its inner cylindrical surface, and a retainer that is marked inside the outer ring and is prevented from rotating with respect to the outer ring, and has a pocket at a position corresponding to the inclined cam surfaces. A one-way clutch mechanism is composed of a cylindrical roller housed in the pocket and a spring that presses the cylindrical roller toward the inclined cam surface, and a radial sliding bearing is arranged adjacent to the one-way clutch mechanism in the axial direction. In the one-way clutch, the inclined cam surface formed on the inner cylindrical surface of the outer ring is longer than the axial width of the retainer, and the outer periphery of the radial sliding bearing is formed on the inner cylindrical surface of the outer ring. The cam surface is formed of a cylindrical surface portion that is fitted with a clearance, and protrusion portions protruding from the cylindrical surface portion at an appropriate number of locations, and the protrusion portions are engaged with the inclined cam surface. There is no need to separately process the fitting surface of the radial sliding bearing on the outer ring, making it easy to process, and there is no reduction in the wall thickness of the fitting surface, providing excellent strength and rigidity. In addition, in radial sliding bearings, the gap is fitted into the inner circumferential surface of the outer ring, so there is no change in the outer diameter of the outer ring made of thin steel plate, and there is no adverse effect on the dimensions of the adjacent inclined cam surface, resulting in a high Not only can a high-precision product be obtained, but assembly work is also easy.

【Example】

以下に本考案の実施例を説明する。第１図乃至
第３図は本考案の第１の実施例である。第１図
は、縦断面図で、第２図は第１図のＸ−Ｘ線部分
拡大横断面図であり、第３図は第１図のＹ−Ｙ線
部分拡大横断面図である。ワンウエイクラツチ１は、外輪２，保持器３，
円筒ころ４，ばね５及びラジアル滑り軸受６とか
らなる。ワンウエイクラツチ機構は、第２図に示
されるように外輪２，保持器３、円筒ころ４及び
ばね５から構成されている。外輪２は、薄肉鋼板
を絞り加工したものであり、内周円筒面７に円周
方向に等配で複数個の傾斜カム面８が形成されて
おり、傾斜カム面８は保持器３の軸方向幅を越え
て外輪２の全長にわたつて形成されている。保持
器３は、円筒ころ４を収容するポケツト９を有
し、柱部１０には円筒ころ４を傾斜カム面８に向
つて押圧するばね５が係止され、二点鎖線で示す
軸１５が右方向に回転したとき、クラツチが作動
する。ばね５の係止状態は第４図に詳細が示されてい
る。すなわち、ばね５は、薄板を折り曲げ加工に
より形成したものであり、保持器３の柱部１０に
設けた係止突部１１にスナツプ係止されている。
柱部１０により連結されたリング部１２，１２′
には、外輪２の傾斜カム面８に係合する回り止め
用突出部１３が形成されている。ばね５は円筒こ
ろ４を押圧す押圧片１４を有する。尚、ばね５は、本実施例では、別体の金属製ば
ねのものを示したが、この他に合成樹脂製保持器
の柱部に樹脂でばね部を一体成形しても同様に適
用される。第３図には、ラジアル滑り軸受６と外輪２の嵌
合状態が示されている。ラジアル滑り軸受６は、
焼結合金あるいは高分子材料等からなり、内周に
軸１５の回転支持又はセンターリングの作用を持
つ軸受面１６が形成され、外周は外輪２の内周円
筒面７にすきま嵌めされる円筒面部１７と、傾斜
カム面８に係合する突出部１８が形成されてい
る。突出部１８が傾斜カム面８に係合することに
よりラジアル滑り軸受６の回り止めがされてい
る。外輪２の内周円筒面７とラジアル滑り軸受６の
円筒面部１７との間のすきまは、ワンウエイクラ
ツチ１を図示しないハウジングに圧入して組付け
た時、外輪２が縮径してすきまが無くなる程度に
設定する。第３図では、突出部１８は傾斜カム面８の全数
に係合するものを示したが、第５図に示すように
傾斜カム面８のうちの何箇所に係合させるもので
あつてもよい。外輪２は両端にツバ部１９，２０を備えている
が、一方のツバ部２０は、保持器３やラジアル滑
り軸受６を外輪２内に組込む時には、まだ円筒状
にされており、組込み後ツバ部２０を折り曲げて
製作する。第６図は本考案の第２の実施例であり、本実施
例はラジアル滑り軸受６をワンウエイクラツチ機
構の片側のみに組み込んだものである。他の構成
については第１の実施例と同じであるので説明を
省略する。 Examples of the present invention will be described below. 1 to 3 show a first embodiment of the present invention. 1 is a vertical cross-sectional view, FIG. 2 is a partially enlarged cross-sectional view taken along the line X--X of FIG. 1, and FIG. 3 is a partially enlarged cross-sectional view taken along the line Y--Y of FIG. 1. The one-way clutch 1 includes an outer ring 2, a retainer 3,
It consists of cylindrical rollers 4, springs 5, and radial sliding bearings 6. The one-way clutch mechanism is composed of an outer ring 2, a retainer 3, cylindrical rollers 4, and a spring 5, as shown in FIG. The outer ring 2 is made by drawing a thin steel plate, and has a plurality of inclined cam surfaces 8 formed on the inner cylindrical surface 7 at equal intervals in the circumferential direction. It is formed over the entire length of the outer ring 2 beyond the directional width. The retainer 3 has a pocket 9 that accommodates the cylindrical rollers 4, and a spring 5 that presses the cylindrical rollers 4 toward the inclined cam surface 8 is engaged with the pillar portion 10. The clutch operates when turned to the right. The locked state of the spring 5 is shown in detail in FIG. That is, the spring 5 is formed by bending a thin plate, and is snap-locked to a locking protrusion 11 provided on a column 10 of the retainer 3.
Ring parts 12, 12' connected by pillar part 10
A detent protrusion 13 that engages with the inclined cam surface 8 of the outer ring 2 is formed on the outer ring 2 . The spring 5 has a pressing piece 14 that presses the cylindrical roller 4. Although the spring 5 is shown as a separate metal spring in this embodiment, it is also possible to form the spring part integrally with the pillar part of the synthetic resin retainer. Ru. FIG. 3 shows the fitted state of the radial sliding bearing 6 and the outer ring 2. The radial sliding bearing 6 is
It is made of a sintered alloy or a polymeric material, and has a bearing surface 16 on its inner periphery that supports rotation of the shaft 15 or acts as a center ring, and its outer periphery is a cylindrical surface portion that is loosely fitted into the inner cylindrical surface 7 of the outer ring 2. 17, and a protrusion 18 that engages with the inclined cam surface 8. The engagement of the protrusion 18 with the inclined cam surface 8 prevents the radial sliding bearing 6 from rotating. The gap between the inner cylindrical surface 7 of the outer ring 2 and the cylindrical surface portion 17 of the radial sliding bearing 6 is eliminated when the one-way clutch 1 is press-fitted into a housing (not shown) and the outer ring 2 is reduced in diameter. Set to a certain degree. In FIG. 3, the protrusions 18 are shown to engage with all of the inclined cam surfaces 8, but as shown in FIG. good. The outer ring 2 is provided with collars 19 and 20 at both ends, but one collar 20 is still cylindrical when the retainer 3 and the radial sliding bearing 6 are assembled into the outer race 2, and the collar 20 remains cylindrical after assembly. It is manufactured by folding the section 20. FIG. 6 shows a second embodiment of the present invention, in which a radial sliding bearing 6 is incorporated only on one side of the one-way clutch mechanism. The other configurations are the same as those in the first embodiment, so their explanation will be omitted.

【effect】

この考案は、以上のように構成したので次のよ
うな効果を有する。 (イ) ラジアル滑り軸受の嵌合面を外輪に別途加工
する必要がなく加工が容易であり、かつ嵌合面
の部分の肉厚の減少がなく、強度，剛性が高
い。 (ロ) ラジアル滑り軸受は、外輪の内周面にすきま
嵌めされるので、薄肉鋼板製に外輪の外径寸法
の変動がなく、更に隣接する傾斜カム面の寸法
にも悪影響を及ぼさず、高精度の製品が得られ
る。 (ハ) ラジアル滑り軸受が外輪の内周面にすきま嵌
めされるので組立作業が容易である。 Since this invention is constructed as described above, it has the following effects. (a) It is easy to process the fitting surface of the radial sliding bearing as there is no need to separately process the outer ring, and there is no reduction in the wall thickness of the fitting surface, resulting in high strength and rigidity. (b) Radial sliding bearings are fitted into the inner circumferential surface of the outer ring, so there is no change in the outer diameter of the outer ring as it is made of thin steel plate, and there is no adverse effect on the dimensions of the adjacent inclined cam surface, resulting in a high Accurate products are obtained. (c) Assembly work is easy because the radial sliding bearing is fitted into the inner peripheral surface of the outer ring with a clearance.

[Brief explanation of the drawing]

第１図は本考案の第１の実施例に係るワンウエ
イクラツチの縦断面図、第２図は第１図のＸ−Ｘ
線部分拡大横断面図、第３図は第１図のＹ−Ｙ線
部分拡大横断面図、第３図は第１図のＹ−Ｙ線部
分拡大横断面図、第４図はばねの係止状態を示す
部分的な斜視図、第５図はラジアル滑り軸受を示
す斜視図、第６図は本考案の第２の実施例に係る
ワンウエイクラツチの縦断面図である。１……ワンウエイクラツチ、２……外輪、３…
…保持器、４……円筒ころ、５……ばね、６……
ラジアル滑り軸受、７……内周円筒面、８……傾
斜カム面、１７……円筒面部、１８……突出部。 FIG. 1 is a longitudinal sectional view of a one-way clutch according to the first embodiment of the present invention, and FIG.
3 is an enlarged cross-sectional view of the Y-Y line in FIG. 1, FIG. 3 is an enlarged cross-sectional view of the Y-Y line in FIG. 1, and FIG. 4 is an enlarged cross-sectional view of the Y-Y line in FIG. FIG. 5 is a perspective view showing a radial sliding bearing, and FIG. 6 is a longitudinal sectional view of a one-way clutch according to a second embodiment of the present invention. 1...One-way clutch, 2...Outer ring, 3...
...Cage, 4...Cylindrical roller, 5...Spring, 6...
Radial sliding bearing, 7... Inner cylindrical surface, 8... Inclined cam surface, 17... Cylindrical surface portion, 18... Protruding portion.

Claims

[Scope of utility model registration request]

An outer ring made of a thin steel plate and having a plurality of inclined cam surfaces formed on its inner cylindrical surface, and a retainer arranged within the outer ring to prevent rotation with respect to the outer ring and having pockets at positions corresponding to the inclined cam surfaces. A one-way clutch mechanism is composed of a cylindrical roller housed in the pocket and a spring that presses the cylindrical roller toward the inclined cam surface, and a radial sliding bearing is arranged adjacent to the one-way clutch mechanism in the axial direction. In the one-way clutch provided with
An inclined cam surface formed on the inner cylindrical surface of the outer ring is formed to be longer than the axial width of the retainer, and the outer periphery of the radial sliding bearing is a cylindrical surface portion that is loosely fitted to the inner cylindrical surface of the outer ring. A one-way clutch characterized in that it is formed with protrusions projecting from the cylindrical surface portion at appropriate locations, and the protrusions are engaged with the inclined cam surface.