JPH062031Y2 - Ball bearing - Google Patents

Description

【考案の詳細な説明】 ［産業上の利用分野］ この考案は各種産業機器の回転体のラジアル荷重を受け
させるために広く用いられ，２つの分割部材の結合によ
って１つの外輪を形成するとともに玉を支持するための
保持器を有しない玉軸受に係り，なお詳しくは外輪を構
成する分割部材の結合構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is widely used for receiving a radial load of a rotating body of various industrial equipment, and one outer ring is formed by coupling two divided members together with a ball. The present invention relates to a ball bearing that does not have a retainer for supporting a bearing, and more specifically, to a joint structure of divided members forming an outer ring.

［従来の技術］ この種軸受は構造が簡単であることを長所とするもので
従来のこの種玉軸受として第３図に示すものを例示する
ことができる。この図において１は外輪でその環状端面
に平行な中心線で左右に２分割された部材１ａと１ｂか
ら成り，左方部材１ａの内側部には筒状部１ｃが形成さ
れ，この筒状部を右方部材１ｂの外周部に嵌合させると
ともにこの両者の嵌合面間を接着剤によって接着させる
ことにより両部材を一体的に結合させて構成する。２は
玉で外輪１の各部材１ａ，１ｂの傾斜面によってＶ字状
に形成されたボール溝３と軸体４の外周に形成された円
弧状のボール溝５との間に複数個挿入される。[Prior Art] This type of bearing has an advantage in that it has a simple structure, and a conventional type of this type of ball bearing shown in FIG. 3 can be exemplified. In this figure, reference numeral 1 denotes an outer ring, which is composed of members 1a and 1b which are divided into two parts on the left and right with a center line parallel to the annular end face thereof, and a cylindrical portion 1c is formed inside the left member 1a. Is fitted to the outer peripheral portion of the right member 1b, and the fitting surfaces of the both members are bonded by an adhesive to integrally bond both members. Reference numeral 2 denotes a ball, and a plurality of balls are inserted between a ball groove 3 formed in a V shape by the inclined surfaces of the respective members 1a and 1b of the outer ring 1 and an arc-shaped ball groove 5 formed on the outer periphery of the shaft body 4. It

従来の玉軸受は以上のように構成されるのであるがその
組付方法としては，予じめ軸体４のボール溝５にグリー
スを塗布した上，筒状部１ｃを有する方の部材１ａの中
心孔に軸体４を貫通させ，この状態において玉２を入
れ，次に両部材１ａ，１ｂ，の両者，またはその一方の
嵌合面に接着剤を塗布した後，右方の部材１ｂを左方部
材１ａの筒状部内に挿入し，接着剤の作用によって両部
材を結合固着させて完了する。The conventional ball bearing is constructed as described above. As a method for assembling the ball bearing, the ball groove 5 of the preload shaft body 4 is coated with grease, and the member 1a having the tubular portion 1c is used. The shaft 4 is penetrated through the central hole, the ball 2 is put in this state, and then the adhesive is applied to both of the members 1a and 1b, or one of the fitting surfaces thereof, and then the right member 1b is attached. It is inserted into the cylindrical portion of the left member 1a, and the two members are joined and fixed by the action of the adhesive to complete the process.

このように構成された玉軸受は一般のラジアル玉軸受の
場合と同様軸体４に負荷された荷重は玉２を介して外輪
１のボール溝３の転動面で受け，また軸体４の回転中に
あっては玉２はこの軸体と外輪１間において自転しなが
ら公転する。In the ball bearing thus constructed, the load applied to the shaft body 4 is received by the rolling surface of the ball groove 3 of the outer ring 1 via the ball 2 as in the case of a general radial ball bearing, and also in the shaft body 4. During the rotation, the ball 2 revolves between the shaft body and the outer ring 1 while rotating on its axis.

［考案が解決しようとする問題点］ しかしながら，このような従来の玉軸受では外輪１を構
成する両部材１ａ，１ｂは接着剤の接着作用のみによっ
て機械的に結合されるので使用機器の運転中の振動・衝
撃等が原因でその接着部が剥がれ，外輪１，玉２，およ
び軸体４は互いに離れ，これ等相互間に適正な隙間が保
持されなくなる。またグリース充填部分と接着剤塗布部
分とが近接していることから組付時におけるグリースと
接着剤の分離が困難でグリースが少しでも接着剤に混入
すると接着強度が低下し信頼性を失墜させることになる
がこの心配がある。[Problems to be Solved by the Invention] However, in such a conventional ball bearing, since both members 1a and 1b constituting the outer ring 1 are mechanically coupled only by the adhesive action of the adhesive, the device used is in operation. Due to the vibration, impact, etc., the bonded portion is peeled off, the outer ring 1, the ball 2, and the shaft body 4 are separated from each other, and an appropriate gap cannot be maintained between them. In addition, since the grease-filled part and the adhesive-applied part are close to each other, it is difficult to separate the grease and the adhesive at the time of assembly, and if a little grease is mixed in the adhesive, the adhesive strength will decrease and the reliability will be impaired. I am worried about this.

この考案は，このような問題点を解決するためになされ
たもので外輪を構成する各部材の結合を強固ならしめる
ことのできる玉軸受を提供することを目的とする。The present invention has been made in order to solve the above problems, and an object thereof is to provide a ball bearing which can firmly bond the respective members constituting the outer ring.

［問題点を解決するための手段］ この考案は外輪を構成する両部材の円周方向の嵌合面間
に亘る溝を設け，この溝内に，上記部材より軟質の材料
から成る結合部材を圧入充填して，この結合部材により
両部材を一体的に結合させたことを特徴とする。[Means for Solving the Problems] This invention provides a groove extending between the fitting surfaces in the circumferential direction of both members constituting the outer ring, and a coupling member made of a material softer than the above members is provided in the groove. It is characterized in that the both members are integrally joined by this joining member by press-fitting and filling.

［実施例］ 以下この考案の実施例を第１図，および第２図を参照に
説明する。なお第３図に示す上記従来の玉軸受と同一構
成部分には同一符号を付してその説明を簡略する。この
実施例においては外輪１を構成する各部材１ａ，１ｂ
中，円筒状部１ｃを有する部材１ａには，その円筒状部
の円周面に，また他方の部材１ｂには，外周面に凹所を
形成することにより，これ等両部材１ａ，１ｂを，部材
１ａの円筒状部に嵌合させた状態においてこれ等両凹所
によって溝底が半径方向に拡大するとともに外輪の一端
面に開口する略断面Ｔ字状の溝６を形成し，この溝内に
各部材１ａ，１ｂより軟質の金属から成る結合部材７を
充填して，この結合部材により両部材１ａ，１ｂの両者
を機械的に強固に結合させたものである。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The same components as those of the conventional ball bearing shown in FIG. 3 are designated by the same reference numerals to simplify the description. In this embodiment, each member 1a, 1b constituting the outer ring 1
By forming a recess in the member 1a having the cylindrical portion 1c on the circumferential surface of the cylindrical portion, and on the other member 1b on the outer peripheral surface, these members 1a, 1b are formed. , In the state of being fitted in the cylindrical portion of the member 1a, the groove bottom expands in the radial direction by these both recesses, and a groove 6 having a substantially T-shaped cross section that opens to one end surface of the outer ring is formed. A connecting member 7 made of a metal softer than the members 1a and 1b is filled therein, and both members 1a and 1b are mechanically and firmly connected by this connecting member.

なお，この結合手段を含めた組付工程としては部材１ａ
の円筒状部１ｃの内周囲面と，他方の部材１ｂの外周面
に予じめ溝６を形成するための凹所を夫々切削加工等に
より設けておき，上記従来の場合の組付と同様，先ず軸
体４のボール溝５にグリースを塗布した後，この軸体を
部材１ａの中心孔に貫通させ，この状態において玉２を
ボール溝５に配列し，次に部材１ａの円筒状部１ｃに部
材１ｂを嵌合させた上，結合部材７となる金属の円筒体
７を第２図に示すように溝６内に挿入し，この円筒体
を，その溝内に圧入することにより，この円筒体を圧潰
させて第１図に示す状態にその溝内に充填させて完成す
る。It should be noted that the assembly process including the connecting means includes the member 1a.
The inner peripheral surface of the cylindrical portion 1c and the outer peripheral surface of the other member 1b are each provided with a recess for forming the pre-groove 6 by cutting or the like, similar to the assembly in the conventional case. First, after grease is applied to the ball groove 5 of the shaft body 4, the shaft body is penetrated into the central hole of the member 1a, and in this state the balls 2 are arranged in the ball groove 5, and then the cylindrical portion of the member 1a is arranged. By fitting the member 1b to 1c, inserting the metal cylinder 7 which becomes the coupling member 7 into the groove 6 as shown in FIG. 2, and press-fitting this cylinder into the groove, This cylindrical body is crushed and filled in the groove in the state shown in FIG. 1 to complete.

［考案の効果］ この考案における玉軸受は、上記のように外輪の各構成
分割部材相互の結合手段として両部材間に亘る溝を設
け，この溝内に比較的軟質の金属材等の結合部材を充填
させて両部材を結合するようにしたので両部材間の結合
は強固で両部材は振動や衝撃によって容易に分離するこ
となく軸受性能を永久的に保持し軸受使用機器の信頼性
を向上させることができ，また上記従来の軸受のように
組付時グリースと接着剤が混ざるといった不都合もな
い。[Effects of the Invention] The ball bearing according to the present invention is provided with a groove extending between both members as a connecting means for connecting the respective divided members of the outer ring as described above, and the connecting member made of a relatively soft metal material is provided in the groove. Since both parts are filled by filling, the connection between both parts is strong, and both parts do not easily separate due to vibration or shock, and the bearing performance is permanently retained and the reliability of the equipment using the bearing is improved. In addition, there is no inconvenience that the grease and the adhesive are mixed during assembly as in the conventional bearing.

【図面の簡単な説明】[Brief description of drawings]

第１図，および第２図は夫々この考案の実施例を示す玉
軸受の断面図，第３図は従来の玉軸受の断面図である。 １………外輪，１ａ，１ｂ………部材 １ｃ……筒状部，６…………………溝， ７………結合部材。1 and 2 are sectional views of a ball bearing showing an embodiment of the present invention, and FIG. 3 is a sectional view of a conventional ball bearing. 1 ... Outer ring, 1a, 1b .... Member 1c ... Cylindrical part, 6 ............... Groove, 7 ......... Coupling member.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】端面に平行な中心線で分割された両部材中
の一方部材の内側端部に筒状部を形成し，この筒状部に
おいて当該部材を，他方部材の外周部に嵌合させて外輪
を構成した玉軸受において一方部材の上記筒状部の内周
面と，この内周面に対接する他方部材の外周面との両嵌
合面において両部材に亘る溝を設け，この溝内に，これ
等部材より軟質の結合部材を圧入充填して両部材を一体
的に結合させたことを特徴とする玉軸受。1. A tubular portion is formed at the inner end of one of the two members divided by a center line parallel to the end face, and the member is fitted to the outer peripheral portion of the other member in the tubular portion. In the ball bearing that constitutes the outer ring, a groove extending over both members is provided on both fitting surfaces of the inner peripheral surface of the tubular portion of one member and the outer peripheral surface of the other member facing the inner peripheral surface. A ball bearing characterized in that both members are integrally joined by press-fitting and filling a joining member softer than these members into the groove.