JPH06280866A - Fitting structure of rolling bearing - Google Patents
Fitting structure of rolling bearingInfo
- Publication number
- JPH06280866A JPH06280866A JP5092549A JP9254993A JPH06280866A JP H06280866 A JPH06280866 A JP H06280866A JP 5092549 A JP5092549 A JP 5092549A JP 9254993 A JP9254993 A JP 9254993A JP H06280866 A JPH06280866 A JP H06280866A
- Authority
- JP
- Japan
- Prior art keywords
- rolling bearing
- groove
- elastic piece
- hole
- radial
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/066—Ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、転がり軸受の外輪を精
度よくかつ確実にハウジングなど支持材に取付けでき、
回転軸の回転に伴う外輪のつれ回りを防止することによ
り、軸受構造の信頼度を高め、しかも軸受の組付け作業
が容易になしうる転がり軸受の取付け構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables the outer ring of a rolling bearing to be accurately and reliably attached to a supporting member such as a housing.
The present invention relates to a rolling bearing mounting structure that improves the reliability of the bearing structure by preventing the outer ring from whirling due to the rotation of a rotating shaft, and that facilitates the assembly work of the bearing.
【０００２】[0002]
【従来の技術】従来、例えば回転軸を支承する転がり軸
受にあっては、その内輪は回転軸に、又外輪は、ハウジ
ングなどの支持材にそれぞれ嵌め合わされる。これらの
内輪、外輪は、何れも回転軸及びハウジングに対してす
べりが生じないよう強固に嵌合させるのが好ましいので
あるが、内、外輪ともしまりばめで転がり軸受を固定す
るには、組付けに手間を要し、又組付け精度に劣る。こ
のため内輪又は外輪の何れか一方の嵌合をすきまばめ、
軸が回転する場合には外輪をすきまばめとしている。2. Description of the Related Art Conventionally, for example, in a rolling bearing that supports a rotating shaft, an inner ring thereof is fitted to a rotating shaft and an outer ring thereof is fitted to a supporting member such as a housing. It is preferable that both the inner and outer rings be firmly fitted to the rotating shaft and the housing so that slip does not occur, but in order to fix the rolling bearings with the inner and outer rings by interference fit, Laborious and inferior in assembly accuracy. For this reason, loosely fit either the inner ring or the outer ring,
When the shaft rotates, the outer ring is a loose fit.
【０００３】[0003]
【発明が解決しようとする課題】しかし、外輪とハウジ
ングとの間のはめ合いをすきまばめとした場合、回転軸
にトルク変動が烈しい場合には、例えば回転軸の急激な
起動、停止などによって外輪がつれ回りする危険があ
り、このようなつれ回りを防ぐために、従来では、若干
のしめしろを付して組付けるか、嵌合面に高粘度のグリ
ースを塗布していた。前者にあっては、作業性が劣り又
回転軸の軸芯に振れが生じ組立精度に劣る。又後者にあ
っては、グリース洩れが生じやすく、このグリースがオ
イルシールに付着することによって、オイルシールが損
傷し、潤滑油洩れ等の事故が生じる危険がある。However, in the case where the fit between the outer ring and the housing is a loose fit, and when the torque fluctuations on the rotary shaft are severe, for example, a sudden start or stop of the rotary shaft may occur. There is a danger that the outer ring will sway, and in order to prevent such swaying, conventionally, a slight interference has been applied to the assembly, or high-viscosity grease has been applied to the fitting surface. In the former case, the workability is poor, and the shaft center of the rotary shaft is shaken, resulting in poor assembly accuracy. Also, in the latter case, grease leakage is likely to occur, and the adhesion of this grease to the oil seal may damage the oil seal and cause an accident such as lubricating oil leakage.
【０００４】発明者は前記問題点を解決すべく研究を重
ねた結果、転がり軸受を保持する支持材に、その軸受を
保持する孔部の内周面に凹溝を設け、この凹溝に軸受を
押圧しうる弾性材からなる弾性片を装着することによっ
て、外輪のつれ回りを防止でき、しかも組付作業も容易
であることを見出し本発明を完成させたのである。As a result of repeated studies to solve the above-mentioned problems, the inventor provided a supporting member for holding a rolling bearing with a groove on the inner peripheral surface of the hole for holding the bearing, and the bearing is provided in this groove. The present inventors have completed the present invention by discovering that the outer ring can be prevented from swinging around by attaching an elastic piece made of an elastic material capable of pressing against, and the assembling work is easy.
【０００５】本発明は、転がり軸受の外輪を支持材に精
度よくかつ確実に取付けでき、外輪のつれ回りを防止
し、事故の危険を排除でき、しかも転がり軸受の組付け
作業が容易となる転がり軸受の提供の取付け構造（以下
構造という）を目的としている。According to the present invention, the outer ring of the rolling bearing can be accurately and surely attached to the support member, the outer ring can be prevented from whirling, the risk of accident can be eliminated, and the assembling work of the rolling bearing can be facilitated. The purpose is to provide a mounting structure for bearings (hereinafter referred to as a structure).
【０００６】[0006]
【課題を解決するための手段】本発明は、内輪と外輪と
を有する転がり軸受の前記外輪が遊嵌される支持材の孔
部の内周面に、この孔部の開口端から軸方向にのびる主
部を有する凹溝を設けるとともに、この凹溝の主部に、
弾性材からなりかつ前記内周面から半径方向内方に突出
する径方向突出部を設けた基部を有する弾性片を装着
し、かつ転がり軸受を、前記径方向突出部を圧縮させて
前記孔部に嵌着させたことを特徴とする転がり軸受の取
付け構造である。SUMMARY OF THE INVENTION According to the present invention, a rolling bearing having an inner ring and an outer ring is provided on an inner peripheral surface of a hole portion of a support member in which the outer ring is loosely fitted, in an axial direction from an opening end of the hole portion. While providing a concave groove having a main portion that extends, in the main portion of this concave groove,
An elastic piece having an elastic material and having a base portion provided with a radial projection portion that projects radially inward from the inner peripheral surface is mounted, and a rolling bearing is formed by compressing the radial projection portion and the hole portion. The rolling bearing mounting structure is characterized in that the rolling bearing is mounted on.
【０００７】なお本発明の構造は、孔部の内周面に、一
ケ所のみ設けてもよく、又略等配分に複数ケ所設けるこ
とも出来る。In the structure of the present invention, only one place may be provided on the inner peripheral surface of the hole, or a plurality of places may be provided at substantially equal distribution.
【０００８】又支持材には、前記凹溝を挟み周方向で向
き合う溝壁面に凹又は凸の係止部を設けかつ前記弾性片
に、前記係止部に係着する抜け止め部を設けるのが好ま
しい。Further, the supporting member is provided with a concave or convex locking portion on groove wall surfaces facing each other in the circumferential direction with the concave groove interposed therebetween, and the elastic piece is provided with a retaining portion for engaging with the locking portion. Is preferred.
【０００９】さらに前記凹溝は前記主部と、この主部に
連なり前記孔部の奥壁面を凹ませたラジアル凹部を具え
るとともに、前記弾性片は、前記主部に装着される前記
基部に、ラジアル凹部に嵌入され奥壁面から突出する軸
方向突出部を有しかつ前記径方向突出部よりも半径方向
内方にのびる舌部を一体に設けることが出来る。Further, the concave groove has the main portion and a radial concave portion which is connected to the main portion and which is formed by recessing the inner wall surface of the hole portion, and the elastic piece is provided on the base portion mounted on the main portion. It is possible to integrally provide a tongue portion that has an axial protruding portion that is fitted in the radial recess and protrudes from the inner wall surface and that extends radially inward from the radial protruding portion.
【００１０】[0010]
【作用】転がり軸受の外輪が支持材の孔部の内周面の孔
部の内周面に遊嵌されるため、転がり軸受の支持材への
取付けが容易かつ両者の軸芯をずれが生じることなく組
付けうる。The outer ring of the rolling bearing is loosely fitted to the inner peripheral surface of the inner peripheral surface of the hole of the supporting member, so that the rolling bearing can be easily mounted on the supporting member and the shaft centers of both are displaced. Can be assembled without any.
【００１１】又、孔部の開口端から軸方向にのびる主部
を有する凹溝を設け、この凹溝の主部に、半径方向内方
に内周面から突出する径方向突出部を設けた基部を有す
る弾性片を装着するとともに、転がり軸受を、この径方
向突出部を圧縮させて前記内孔に嵌着している。これに
よって、転がり軸受の内輪に嵌着される回転軸に、急激
な起動、停止が繰返されるようなトルク変動が生じた場
合であっても、外輪にずれが生じることがない。なお転
がり軸受は、弾性片の圧縮によって孔部に嵌入できるた
め、転がり軸受の組付け作業は容易になしうる。Further, a concave groove having a main portion extending in the axial direction from the opening end of the hole portion is provided, and a radial protrusion protruding radially inward from the inner peripheral surface is provided in the main portion of the concave groove. An elastic piece having a base is mounted, and a rolling bearing is fitted in the inner hole by compressing the radial projection. As a result, even if the rotating shaft fitted to the inner ring of the rolling bearing undergoes torque fluctuations such as rapid start and stop, the outer ring does not shift. Since the rolling bearing can be fitted into the hole by the compression of the elastic piece, the rolling bearing can be easily assembled.
【００１２】なお、支持材に係止部を設け、かつ弾性片
にその係止部に係着する抜け止め部を設けた場合には、
弾性片の孔部への装着および転がり軸受の内孔への嵌着
作業が一層容易となる。When the support member is provided with a locking portion and the elastic piece is provided with a retaining portion which engages with the locking portion,
The work of mounting the elastic piece in the hole and fitting it into the inner hole of the rolling bearing becomes easier.
【００１３】又、前記凹溝に孔部の奥壁面を凹ませたラ
ジアル凹部を形成し、かつ弾性片にこのラジアル凹部に
嵌入され半径方向内方に垂下する舌部を設けた場合に
は、転がり軸受の内孔への嵌着に際して、この舌部によ
り弾性片の抜け落ちを確実に防止しうる。しかもこの舌
部が軸受に嵌入される回転軸の軸方向への衝撃及びその
衝撃に伴う騒音の発生を防止、さらには回転軸の熱膨脹
による長さの変化を吸収でき、従来前記目的のために転
がり軸受の側面を受けていた波ワッシャーを省略するこ
とが可能となる。Further, in the case where the concave groove is formed with a radial concave portion in which the inner wall surface of the hole is concave and the elastic piece is provided with a tongue portion fitted in the radial concave portion and hanging inward in the radial direction, When the rolling bearing is fitted into the inner hole, the tongue portion can reliably prevent the elastic piece from falling off. Moreover, the tongue portion can prevent the axial impact of the rotary shaft fitted in the bearing and the generation of noise accompanying the impact, and can absorb the change in the length due to the thermal expansion of the rotary shaft. It is possible to omit the wave washer that has received the side surface of the rolling bearing.
【００１４】[0014]
【実施例】以下本発明の一実施例を図面に基づき説明す
る。図１〜４において転がり軸受の取付け構造は、内輪
３と外輪４とを有する転がり軸受２の前記外輪４が遊嵌
される支持材５の孔部６の内周面７に凹溝１０を設けて
おり、この凹溝１０に前記内周面７から半径方向内方
に、突出させて弾性材１５を装着するとともに、転がり
軸受２を弾性材１５を圧縮させて孔部６に嵌着してい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, the rolling bearing mounting structure has a groove 10 provided in an inner peripheral surface 7 of a hole 6 of a support member 5 in which the outer ring 4 of a rolling bearing 2 having an inner ring 3 and an outer ring 4 is loosely fitted. The elastic member 15 is mounted in the groove 10 so as to project inward from the inner peripheral surface 7 in the radial direction, and the rolling bearing 2 is compressed in the elastic member 15 and fitted into the hole 6. There is.
【００１５】支持材５は、例えば図６に示す減速電動機
Ｇにおけるケース体Ｃの軸受Ｂを保持するハウジングＨ
であり、このハウジングＨには軸受Ｂとともに回転軸Ａ
との間で油洩れを防ぐシール部材Ｓが設けられている。The support member 5 is, for example, a housing H that holds a bearing B of a case body C in the reduction motor G shown in FIG.
The housing H has a bearing B and a rotary shaft A.
A seal member S for preventing oil leakage is provided between and.
【００１６】支持材５には、図１、２、３に示す如く転
がり軸受２の外輪４の外周面４ａを遊嵌する内周面７
と、この外輪の端面４ｂが当接する奥壁面１３とを有す
る孔部６を具える。又前記内周面７には、単数又は複数
の、本例では単数の凹溝１０が設けられる。As shown in FIGS. 1, 2, and 3, the support member 5 has an inner peripheral surface 7 on which the outer peripheral surface 4a of the outer ring 4 of the rolling bearing 2 is loosely fitted.
And a rear wall surface 13 with which the end surface 4b of the outer ring abuts. Further, the inner peripheral surface 7 is provided with a single or a plurality of concave grooves 10 in this example.
【００１７】凹溝１０は、孔部６の開口端９から軸方向
にのびかつ前記内周面７を切欠くことにより形成される
主部１１の半径方向外方に主部１１よりも巾狭の案内部
２２と、この案内部２２の半径方向外方に案内部２２よ
りも広巾のぬすみ部２３とが設けられる。The concave groove 10 extends axially from the open end 9 of the hole 6 and is narrower than the main portion 11 radially outward of the main portion 11 formed by notching the inner peripheral surface 7. The guide portion 22 and a slime portion 23 wider than the guide portion 22 are provided radially outward of the guide portion 22.
【００１８】本実施例では、凹溝１０に前記主部１１に
連なり奥壁面１３を凹ませることにより形成されるとと
もに前記内周面７から半径方向内方にのびるラジアル凹
部１４が形設される。In the present embodiment, a radial recess 14 is formed in the recessed groove 10 which is continuous with the main portion 11 by recessing the inner wall surface 13 and extends radially inward from the inner peripheral surface 7. .
【００１９】このような凹溝１０は、図５に示すような
複雑なケース体ＣのハウジングＨに設けられる場合であ
ってもケース体Ｃを、ダイキャスト、又は精密鋳造によ
り成形することによって、容易に形設することが可能で
ある。Even when such a recessed groove 10 is provided in the housing H of the complicated case body C as shown in FIG. 5, the case body C is formed by die casting or precision casting. It can be easily formed.
【００２０】弾性片１５は、弾性材を用いて一体に形成
され、本実施例ではブタジエン・アクリロニトリル系合
成ゴムである合成ゴムＮＢＲを用いる。このような合成
ゴムＮＢＲを用いることによって、該ゴムが耐油性に特
に優れており、軸受及びその他の部材から飛散する油に
よって、弾性片１５が破損するのを防止している。なお
軸受に大荷重が作用し、かつ油の飛散、付着の危険が少
ない場合にはウレタンゴムを用いることが出来る。The elastic piece 15 is integrally formed by using an elastic material, and in this embodiment, a synthetic rubber NBR which is a butadiene-acrylonitrile synthetic rubber is used. By using such a synthetic rubber NBR, the rubber is particularly excellent in oil resistance, and the elastic piece 15 is prevented from being damaged by the oil scattered from the bearing and other members. Note that urethane rubber can be used when a large load acts on the bearing and the risk of oil scattering and adhesion is small.
【００２１】弾性片１５は、凹溝１０の前記主部１１
に、内周面７から半径方向内方に向かって少長さ突出す
る径方向突出部１６を有する基部１７を具え、又弾性片
１５にはこの基部１７の半径方向外方に位置し、凹溝１
０の案内部２２よりも巾狭かつ該凹溝１０を挟み周方向
に向き合う溝壁面２２ａ、２２ａの間に密に嵌り合う２
つの側面２５ａ、２５ａを有するくびれ部２５と、この
くびれ部２５の半径方向外側に凹溝１０の前記ぬすみ部
に遊嵌しうる頭部２６が形成される。従って凹溝１０に
弾性片１５を、開口端９から軸方向に挿入し、主部１１
と基部１７とを嵌着することにより、基部１７の径方向
突出部１６は、孔部６の内周面７から半径方向内方に突
出するとともに、弾性片１５の前記頭部２６が凹溝１０
の案内部２２によって係止され、弾性片１５の抜け落ち
を阻止する。The elastic piece 15 is formed by the main portion 11 of the groove 10.
Is provided with a base portion 17 having a radial projecting portion 16 projecting a small length inward in the radial direction from the inner peripheral surface 7, and the elastic piece 15 is located radially outward of the base portion 17 and has a concave shape. Groove 1
2 which is narrower than the guide portion 22 of 0 and closely fits between the groove wall surfaces 22a, 22a which face each other in the circumferential direction with the groove 10 sandwiched therebetween.
A constricted portion 25 having two side surfaces 25a, 25a, and a head portion 26 that can be loosely fitted in the recessed portion of the concave groove 10 are formed on the outer side of the constricted portion 25 in the radial direction. Therefore, the elastic piece 15 is inserted into the groove 10 from the opening end 9 in the axial direction, and the main portion 11
By fitting the base 17 and the base 17, the radial protrusion 16 of the base 17 protrudes radially inward from the inner peripheral surface 7 of the hole 6, and the head 26 of the elastic piece 15 is recessed. 10
It is locked by the guide portion 22 and prevents the elastic piece 15 from falling off.
【００２２】従って凹溝１０の案内部２２とぬすみ部２
３とによってこの凹溝１０を挟み周方向に向き合う溝壁
面に凸の係止部１２が、又弾性片１５のくびれ部２５と
頭部２６によって、前記係止部１２に係着する抜け止め
部１８がそれぞれ形成される。なお前記凹溝１０の前記
溝壁面を半径方向外方に向かって凹ませ、かつ弾性片１
５を半径方向外方に向かって膨らませることによって、
凹の係止部とこの凹の係止部に係着する凸の抜け止め部
とが形成でき、両者は係合できる。Therefore, the guide portion 22 of the concave groove 10 and the recessed portion 2
3, a convex locking portion 12 is provided on the groove wall surface which faces the circumferential direction with the concave groove 10 sandwiched therebetween, and a retaining portion which is locked to the locking portion 12 by the constricted portion 25 and the head portion 26 of the elastic piece 15. 18 are formed respectively. In addition, the groove wall surface of the groove 10 is recessed outward in the radial direction, and the elastic piece 1
By inflating 5 towards the outside in the radial direction,
A concave locking portion and a convex retaining portion that engages with the concave locking portion can be formed, and both can be engaged.
【００２３】又前記係合により、弾性片１５の前記径方
向突出部１６は、所定の長さ分内周面７から半径方向内
方に突出することになる。By the engagement, the radial projection 16 of the elastic piece 15 projects radially inward from the inner peripheral surface 7 by a predetermined length.
【００２４】なお、径方向突出部１６の内方に向く内向
き面２７は、転がり軸受２の外輪、外周面４ａの半径と
同等又はそれ以下とし、転がり軸受２との当接に際して
周方向両縁部Ｐ、Ｐが主として圧縮しうるよう形成され
る。このように形成することにより、外径が近似する複
数サイズの転がり軸受に対して共通寸法からなる弾性片
１５を用いることが出来、弾性片１５の共用化を図りう
るからである。The inwardly facing surface 27 of the radially projecting portion 16 is equal to or smaller than the radius of the outer ring of the rolling bearing 2 and the outer peripheral surface 4a, and both sides in the circumferential direction at the time of contact with the rolling bearing 2. The edges P, P are formed so as to be mainly compressible. By forming in this way, the elastic piece 15 having a common dimension can be used for the rolling bearings of a plurality of sizes having similar outer diameters, and the elastic piece 15 can be shared.
【００２５】又本実施例では、図５に示す如く基部１７
のくびれ部２５に向く段差面１７ａは、凹溝１０の主部
１１との間に周方向に漸増する間隙を有して装着され、
弾性片１５の転がり軸受２の嵌着に際する変形を容易と
する一方、前記頭部２６には、凹溝１０のくびれ部２３
との間に周方向に対して遊隙ｆが形成され、この遊隙ｆ
によって基部１７の圧縮変形を頭部２６で吸収させてい
る。Further, in this embodiment, as shown in FIG.
The stepped surface 17a facing the constricted portion 25 is attached with a gap gradually increasing in the circumferential direction between the stepped surface 17a and the main portion 11 of the groove 10.
While facilitating the deformation of the elastic piece 15 when the rolling bearing 2 is fitted, the constricted portion 23 of the groove 10 is formed in the head portion 26.
A play gap f is formed in the circumferential direction between and
The head 26 absorbs the compressive deformation of the base 17.
【００２６】さらに本実施例では、弾性片１５は、前記
基部１７に、凹溝１０の前記ラジアル凹部１４に嵌入さ
れ奥壁面１３から突出する軸方向突出部１９を有し、か
つ前記径方向突出部１６よりも径方向内方にのびる舌部
２０を一体に設けている。Further, in the present embodiment, the elastic piece 15 has an axial protruding portion 19 which is fitted in the radial recess 14 of the recessed groove 10 and protrudes from the inner wall surface 13 in the base portion 17, and which also protrudes in the radial direction. A tongue portion 20 extending radially inward of the portion 16 is integrally provided.
【００２７】又弾性片１５には、前記凹部１５の開口端
９と略面一となる前面２９に、軸方向にのびる小孔３０
が突設され、凹溝１０に嵌着された弾性片１５は、この
小孔３０と径方向突出部１６の内向き面２７とをペンチ
等の工具を用いて挟み凹溝１０から引き抜くことが出来
る。Further, the elastic piece 15 has a front surface 29 which is substantially flush with the opening end 9 of the recess 15 and a small hole 30 extending in the axial direction.
The elastic piece 15 protrudingly provided and fitted in the groove 10 can be pulled out from the groove 10 by sandwiching the small hole 30 and the inward surface 27 of the radial protrusion 16 with a tool such as pliers. I can.
【００２８】然して、前記凹溝１０に弾性片１５を、係
止部１２に抜け止め部１８を係合させつつ圧入すること
により、弾性片１５は、抜け落ちることなく径方向突出
部１６を内周面７から半径方向内方に突出させて凹溝１
０に嵌着される。However, by press-fitting the elastic piece 15 into the concave groove 10 and the locking portion 12 while engaging the retaining portion 18 with the retaining portion 12, the elastic piece 15 does not fall out and the inner periphery of the radially projecting portion 16 is prevented. The groove 1 is made to project inward in the radial direction from the surface 7.
It is fitted to 0.
【００２９】然る後、転がり軸受２を孔部６に開口端７
側から嵌入することにより、弾性片１５の径方向突出部
１６は圧縮され、その圧縮により、転がり軸受２の外輪
４が回転軸Ａの回転に伴いつれ回りするのを防止するこ
とが出来る。又舌部２０によって弾性片１５が軸方向に
移動し脱落するのを防止できる。After that, the rolling bearing 2 is inserted into the hole 6 and the open end 7 is formed.
By fitting from the side, the radial protrusion 16 of the elastic piece 15 is compressed, and the compression can prevent the outer ring 4 of the rolling bearing 2 from rotating around as the rotation shaft A rotates. Further, the tongue portion 20 can prevent the elastic piece 15 from moving axially and falling off.
【００３０】なお本実施例のように弾性片１５のくびれ
部２３を、凹溝１０の案内部２２と周方向に対して密に
嵌め合わせた場合には、弾性片１５の周方向の偏位をさ
らに少なくでき、前記外輪３のつれ回りを一層確実に阻
止しうる。When the constricted portion 23 of the elastic piece 15 is closely fitted to the guide portion 22 of the concave groove 10 in the circumferential direction as in the present embodiment, the elastic piece 15 is displaced in the circumferential direction. It is possible to further reduce the number of rotations, and it is possible to more reliably prevent the outer ring 3 from swinging around.
【００３１】[0031]
【発明の効果】叙上の如く本発明の転がり軸受の取付け
構造は、前記した構成を有する弾性片を転がり軸受が遊
嵌される支持材の孔部に設ける凹溝に、孔部の内周面か
ら半径方向内方に突出させて装着しかつ転がり軸受をそ
の突出部を圧縮させて前記孔部に装着させることを要し
とするため、転がり軸受に内嵌される回転軸の回転によ
って生じるつれ回りするのを防止でき、軸受構造の信頼
性と組付け精度を高め、しかも組付け作業が容易となり
作業能率を向上しうる。As described above, according to the mounting structure of the rolling bearing of the present invention, the elastic piece having the above-mentioned structure is provided in the concave groove provided in the hole of the support member in which the rolling bearing is loosely fitted, and the inner circumference of the hole is formed. Since it is necessary to mount the rolling bearing so as to project inward in the radial direction and to compress the projecting portion of the rolling bearing to mount it in the hole portion, it is caused by the rotation of the rotating shaft fitted in the rolling bearing. It is possible to prevent the rolling around, improve the reliability of the bearing structure and the assembling accuracy, and further, the assembling work becomes easy and the working efficiency can be improved.
【図１】本発明の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】そのＸ−Ｘ線断面図である。FIG. 2 is a sectional view taken along line XX.
【図３】その要部を示す部分斜視図である。FIG. 3 is a partial perspective view showing a main part thereof.
【図４】弾性片を示す斜視図である。FIG. 4 is a perspective view showing an elastic piece.
【図５】作用を示す正面図である。FIG. 5 is a front view showing the operation.
【図６】本発明の構造を用いた減速電動機の一例を示す
断面図である。FIG. 6 is a sectional view showing an example of a reduction motor using the structure of the present invention.
２ 転がり軸受 ３ 内輪 ４ 外輪 ５ 支持材 ６ 孔部 ７ 内周面 ９ 開口端 １０ 凹溝 １１ 主部 １２ 係止部 １３ 奥壁面 １４ ラジアル凹部 １５ 弾性片 １６ 径方向突出部 １７ 基部 １８ 抜け止め部 ２０ 舌部 2 Rolling bearing 3 Inner ring 4 Outer ring 5 Supporting material 6 Hole 7 Inner peripheral surface 9 Opening end 10 Recessed groove 11 Main part 12 Locking part 13 Inner wall surface 14 Radial recessed part 15 Elastic piece 16 Radial protruding part 17 Base part 18 Detent part 20 tongue
Claims (3)
輪が遊嵌される支持材の孔部の内周面に、この孔部の開
口端から軸方向にのびる主部を有する凹溝を設けるとと
もに、この凹溝の主部に、弾性材からなりかつ前記内周
面から半径方向内方に突出する径方向突出部を設けた基
部を有する弾性片を装着し、かつ転がり軸受を、前記径
方向突出部を圧縮させて前記孔部に嵌着させたことを特
徴とする転がり軸受の取付け構造。1. A rolling groove having an inner ring and an outer ring is provided with a recessed groove having a main portion extending axially from an opening end of the hole in a hole of a support member in which the outer ring is loosely fitted. An elastic piece having a base portion, which is made of an elastic material and is provided with a radial protrusion that protrudes radially inward from the inner peripheral surface, is attached to the main portion of the groove, and the rolling bearing is provided. A rolling bearing mounting structure, characterized in that a radial protrusion is compressed and fitted into the hole.
き合う溝壁面に凹又は凸の係止部を設けかつ前記弾性片
に、前記係止部に係着する抜け止め部を設けたことを特
徴とする請求項１記載の転がり軸受の取付け構造。2. The support member is provided with concave or convex engaging portions on groove wall surfaces facing each other in the circumferential direction with the concave groove interposed therebetween, and the elastic piece is provided with a retaining portion engaging with the engaging portion. The rolling bearing mounting structure according to claim 1, wherein:
前記孔部の奥壁面を凹ませたラジアル凹部を具えるとと
もに、前記弾性片は、前記主部に装着される前記基部
に、ラジアル凹部に嵌入され奥壁面から突出する軸方向
突出部を有しかつ前記径方向突出部よりも半径方向内方
にのびる舌部を一体に設けたことを特徴とする請求項１
又は２記載の転がり軸受の取付け構造。3. The concave groove includes the main portion and a radial concave portion that is continuous with the main portion and is formed by recessing the inner wall surface of the hole portion, and the elastic piece is mounted on the main portion. 2. A tongue portion, which has an axial protruding portion that is fitted in the radial recess and protrudes from the inner wall surface, and that extends radially inward of the radial protruding portion is integrally provided on
Alternatively, the structure for mounting the rolling bearing according to 2 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5092549A JP2571659B2 (en) | 1993-03-25 | 1993-03-25 | Rolling bearing mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5092549A JP2571659B2 (en) | 1993-03-25 | 1993-03-25 | Rolling bearing mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06280866A true JPH06280866A (en) | 1994-10-07 |
| JP2571659B2 JP2571659B2 (en) | 1997-01-16 |
Family
ID=14057488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5092549A Expired - Fee Related JP2571659B2 (en) | 1993-03-25 | 1993-03-25 | Rolling bearing mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2571659B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009005009A1 (en) * | 2007-06-29 | 2009-01-08 | Jtekt Corporation | Bearing fixing structure and method of assembling the same |
| JP2009044931A (en) * | 2007-08-10 | 2009-02-26 | Nsk Ltd | Electric motor and electric power steering device using the same |
| JP2013228108A (en) * | 2007-01-11 | 2013-11-07 | Nsk Ltd | Rolling bearing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55109133U (en) * | 1979-01-26 | 1980-07-31 | ||
| JPS59185420U (en) * | 1983-05-27 | 1984-12-10 | 株式会社安川電機 | Bearing support structure |
-
1993
- 1993-03-25 JP JP5092549A patent/JP2571659B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55109133U (en) * | 1979-01-26 | 1980-07-31 | ||
| JPS59185420U (en) * | 1983-05-27 | 1984-12-10 | 株式会社安川電機 | Bearing support structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013228108A (en) * | 2007-01-11 | 2013-11-07 | Nsk Ltd | Rolling bearing |
| WO2009005009A1 (en) * | 2007-06-29 | 2009-01-08 | Jtekt Corporation | Bearing fixing structure and method of assembling the same |
| JP2009008217A (en) * | 2007-06-29 | 2009-01-15 | Jtekt Corp | Bearing fixation structure |
| JP2009044931A (en) * | 2007-08-10 | 2009-02-26 | Nsk Ltd | Electric motor and electric power steering device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2571659B2 (en) | 1997-01-16 |
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