JP2008291881A - Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer - Google Patents

Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer Download PDF

Info

Publication number
JP2008291881A
JP2008291881A JP2007136393A JP2007136393A JP2008291881A JP 2008291881 A JP2008291881 A JP 2008291881A JP 2007136393 A JP2007136393 A JP 2007136393A JP 2007136393 A JP2007136393 A JP 2007136393A JP 2008291881 A JP2008291881 A JP 2008291881A
Authority
JP
Japan
Prior art keywords
resin
rolling bearing
connection
pair
cage
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.)
Pending
Application number
JP2007136393A
Other languages
Japanese (ja)
Inventor
Takeshi Maejima
武始 前島
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.)
NSK Ltd
Original Assignee
NSK Ltd
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 NSK Ltd filed Critical NSK Ltd
Priority to JP2007136393A priority Critical patent/JP2008291881A/en
Publication of JP2008291881A publication Critical patent/JP2008291881A/en
Pending legal-status Critical Current

Links

Images

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3862—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together
    • F16C33/3875—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together made from plastic, e.g. two injection moulded parts joined by a snap fit
    • 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
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding
    • F16C2226/38—Material joints by welding with ultrasonic welding

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide the most suitable connection structure for a rolling bearing retainer for high-speed rotation comprising a pair of resin members without backlash neither in the axial direction nor in the circumferential direction and capable of securing sufficient axial connection strength. <P>SOLUTION: Between the pair of resin members 11, 12, after inserting a pillar part 21 projected on a connection surface 11a of one resin member 11 into a connection hole part 23 formed on a connection surface 12a of the other resin member 12, a head part 21a of the pillar part 21 projected to the outside of the connection hole part 23 is ultrasonically-welded and caulked, which connects the pair of the resin members 11, 12 to each other. Asperity 25 for being welded by ultrasonically-welding and caulking to the head part 21a is provided on side faces of the pillar part 21 and the connection hole part 23. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、一対の樹脂部材相互をガタつきがなく、しかも、より強固に連結する連結構造及び、該連結構造を用いた転がり軸受用樹脂製保持器、及び該保持器を使用した転がり軸受に関する。   The present invention relates to a connection structure for connecting a pair of resin members without backlash and more firmly, a resin cage for a rolling bearing using the connection structure, and a rolling bearing using the cage. .

転がり軸受の許容回転数を高めるためには、内外輪間に配置される複数個の転動体相互の配列ピッチを保持する保持器が遠心力によって変形することがないように、左右対称の保持器を用いる必要がある。   In order to increase the permissible rotational speed of the rolling bearing, a symmetric cage is used so that the cage that holds the arrangement pitch between the plurality of rolling elements arranged between the inner and outer rings is not deformed by centrifugal force. Must be used.

従来、このような左右対称の保持器として、下記特許文献１に開示されているように、対向配置される一対の樹脂製の環状体から構成され、各環状体は、円周方向の複数箇所に転動体を転動自在に収容する半球状のポケットが設けられ、これらの一対の環状体を連結することで、転がり軸受内の複数個の転動体を周方向に所定の離間間隔に保持する構造のものが提案されている。   Conventionally, as such a symmetric cage, as disclosed in Patent Document 1 below, it is composed of a pair of resin-made annular bodies arranged to face each other, and each annular body has a plurality of locations in the circumferential direction. Is provided with a hemispherical pocket for accommodating the rolling elements in a freely rolling manner, and a plurality of rolling elements in the rolling bearing are held at a predetermined spacing in the circumferential direction by connecting the pair of annular bodies. Structures have been proposed.

そして、保持器を構成する一対の樹脂製の環状体相互の連結構造としては、一方の環状体の連結面に突設された柱部を、他方の環状体の連結面に形成された連結用穴部に挿入した後、連結用穴部の外側に突出した柱部の頭部を加締めることにより連結する構造、及び、一方の環状体の連結面に突設された凸部を他方の環状体の連結面に形成された凹部に嵌合させた後、これらの凸部と凹部を溶着することにより連結する構造が提案されている。   And as a connection structure of a pair of resin-made annular bodies constituting the cage, the column portion protruding from the coupling surface of one annular body is connected to the coupling surface of the other annular body. After inserting into the hole part, the structure of connecting by crimping the head part of the pillar part protruding outside the connecting hole part, and the convex part protruding from the connection surface of one annular body is the other annular shape A structure has been proposed in which the protrusions and the recesses are welded together after being fitted into the recesses formed on the connecting surface of the body.

特開２００６−２５８１７６号公報JP 2006-258176 A

ところが、一方の環状体に突設された柱部を他方の環状体の連結用穴部に挿通させて、柱部の頭部を加締める連結構造の場合は、加締めにより径方向に膨出した柱部の頭部が他方の環状体を押えるため、柱部の軸方向に沿ったガタつきをなくした強固な連結が行える。しかし、その一方、寸法公差等により柱部の外径と連結用穴部の内周との間に隙間がある場合には、一対の環状体間において周方向のガタつきを防止することができず、例えば軸受が高速回転で使用されたときに、周方向のガタつきによる異音の発生という問題が発生する虞があった。   However, in the case of a connecting structure in which the column portion protruding from one annular body is inserted into the connecting hole portion of the other annular body and the head portion of the column portion is caulked, it bulges in the radial direction by caulking. Since the head portion of the pillar portion presses the other annular body, it is possible to perform a strong connection that eliminates rattling along the axial direction of the pillar portion. However, on the other hand, if there is a gap between the outer diameter of the column and the inner periphery of the connecting hole due to dimensional tolerances, circumferential play between the pair of annular bodies can be prevented. However, for example, when the bearing is used at high speed rotation, there is a possibility that a problem of generation of noise due to rattling in the circumferential direction may occur.

これに対して、一方の環状体に突設された凸部を他方の環状体の凹部に嵌合させて、これらの凹部及び凸部を溶着させる連結構造の場合は、柱部の軸方向のガタつきだけでなく、環状体相互の周方向のガタつきをもなくすことができる。しかし、溶着による連結は、柱部の軸方向の連結力（固着力）では、加締めによる連結構造よりも劣るため、例えば軸受が高速回転で使用されていて、環状体相互が離反する方向の作用力であるバレ力が強く働いた時に、溶着部の破損により環状体相互の連結が外れてしまう虞があった。   On the other hand, in the case of a connection structure in which the convex portion protruding from one annular body is fitted into the concave portion of the other annular body and these concave portions and convex portions are welded, the axial direction of the column portion In addition to rattling, it is possible to eliminate rattling in the circumferential direction between the annular bodies. However, the connection by welding is inferior to the connection structure by caulking in the axial connection force (fixing force) of the column part. For example, the bearings are used at high speed rotation, and the annular bodies are separated from each other. When the barre force, which is an acting force, worked strongly, there was a risk that the annular bodies were disconnected from each other due to breakage of the welded portion.

本発明の目的は上記課題を解消することに係り、一対の樹脂部材相互を軸方向及び軸に直交する方向の双方にガタつきがなく、しかも、軸方向の連結強度もバレ難い十分な強度に向上させることのできる連結構造を提供すること、さらには、この連結構造を用いることで転動体に対する保持性能が向上した転がり軸受用樹脂製保持器を提供すること、更に、この保持器を使用することにより、高速回転時にも保持器に異音が発生しにくく、また、保持器にバレが生じ難く、許容回転数の向上が図り易い転がり軸受を提供することである。   An object of the present invention is to solve the above-mentioned problems, and there is no backlash between the pair of resin members in both the axial direction and the direction orthogonal to the axis, and the connection strength in the axial direction is also sufficiently hard to be distorted. Providing a connecting structure that can be improved, further providing a resin cage for a rolling bearing with improved holding performance for rolling elements by using this connecting structure, and further using this cage Accordingly, it is an object of the present invention to provide a rolling bearing in which abnormal noise is not easily generated in the cage even during high-speed rotation, and the cage is less likely to burr and the allowable rotational speed can be easily improved.

上記目的は下記構成により達成される。
（１）一対の樹脂部材間において、一方の樹脂部材の連結面に突設された柱部を、他方の樹脂部材の連結面に形成された連結用穴部に挿入した後、前記連結用穴部の外側に突出した前記柱部の頭部に超音波溶着加締めをすることで、一対の樹脂部材相互を連結する連結構造であって、
前記柱部と前記連結用穴部の側面に、前記頭部への超音波溶着加締めにより溶着する凹凸を設けたことを特徴とする連結構造。 The above object is achieved by the following configuration.
(1) Between a pair of resin members, after inserting a column portion protruding from the connection surface of one resin member into a connection hole portion formed in the connection surface of the other resin member, the connection hole A connecting structure for connecting a pair of resin members to each other by ultrasonic welding caulking to the head portion of the pillar portion protruding outside the portion;
The connection structure characterized by providing the unevenness | corrugation welded by the ultrasonic welding caulking to the said head on the side surface of the said column part and the said connection hole.

（２）対向配置される一対の樹脂製の環状体を連結することで、転がり軸受内の複数個の転動体を周方向に所定の離間間隔に保持する転がり軸受用樹脂製保持器であって、
前記一対の環状体相互の連結が、上記（１）に記載の連結構造によってなされていることを特徴とする転がり軸受用樹脂製保持器。 (2) A rolling bearing resin cage that holds a plurality of rolling elements in a rolling bearing at predetermined spacing intervals in the circumferential direction by connecting a pair of resin-made annular bodies arranged opposite to each other. ,
The pair of annular members are connected to each other by the connecting structure described in the above (1), and is a resin-made cage for a rolling bearing.

（３）内外輪間に配置される複数個の転動体相互を、樹脂製保持器により周方向に所定の配列ピッチに保持するようにした転がり軸受であって、
前記樹脂製保持器として、上記（２）に記載の樹脂製保持器が使用されていることを特徴とする転がり軸受。 (3) A rolling bearing in which a plurality of rolling elements arranged between the inner and outer rings are held at a predetermined arrangement pitch in the circumferential direction by a resin cage,
A rolling bearing, wherein the resin cage described in (2) above is used as the resin cage.

上記（１）に記載の連結構造では、一対の樹脂部材相互の連結は、一方の樹脂部材に突設された柱部を他方の樹脂部材の連結用穴部に挿通させて、柱部の頭部を加締めることによる第１の連結構造と、嵌合している柱部と連結用穴部の側面同士の溶着による第２の連結構造とによりなされている。
そして加締めによる第１の連結構造は、加締めにより径方向に膨出した柱部の頭部が他方の樹脂部材を押えるため、柱部の軸方向に沿ったガタつきを無くした強固な連結を得る。
また、溶着による第２の連結構造は、柱部の軸方向の連結を補強すると同時に、柱部と連結用穴部との間の隙間を無くして、柱部の軸方向に直交する方向へのガタつきを無くした連結を得る。
従って、これらの第１の連結構造と第２の連結構造の相乗により、一対の樹脂部材相互を軸方向及び軸に直交する方向の双方にガタつきがなく、しかも、軸方向の連結強度を更に強化して、十分な強度を確保することができる。 In the connection structure described in (1) above, the pair of resin members are connected to each other by inserting a column portion projecting from one resin member into a connection hole portion of the other resin member, The first connecting structure is formed by caulking the part, and the second connecting structure is formed by welding the side surfaces of the fitting column and the connecting hole.
And the first connection structure by caulking is a strong coupling that eliminates rattling along the axial direction of the column part because the head of the column part bulging in the radial direction by caulking presses the other resin member. Get.
In addition, the second connection structure by welding reinforces the axial connection of the column portion, and at the same time eliminates a gap between the column portion and the connection hole portion, so as to extend in a direction orthogonal to the axial direction of the column portion. Get a connection without backlash.
Therefore, due to the synergy between the first connection structure and the second connection structure, the pair of resin members are not rattled in both the axial direction and the direction orthogonal to the axis, and the axial connection strength is further increased. It can be strengthened to ensure sufficient strength.

上記（２）に記載の樹脂製保持器では、上記（１）に記載の連結構造を用いることで、対向配置される一対の樹脂製の環状体相互が、ガタつきなく、且つ強固に連結された左右対称構造の保持器となり、高速回転時の環状体の変形を防止して、転動体に対して高い保持性能を確保することができる。   In the resin cage described in (2) above, by using the connection structure described in (1) above, the pair of resin annular bodies arranged opposite to each other are firmly connected without rattling. In addition, the cage has a symmetrical structure, and it is possible to prevent deformation of the annular body during high-speed rotation and ensure high holding performance for the rolling elements.

上記（３）に記載の転がり軸受では、上記（２）に記載の樹脂製保持器を使用することにより、高速回転時にも保持器に異音が発生しにくく、また、保持器にバレが生じ難くなり、許容回転数の向上が図り易くなる。   In the rolling bearing described in (3) above, by using the resin cage described in (2) above, it is difficult for abnormal noise to be generated in the cage even during high-speed rotation, and there is a burr in the cage. It becomes difficult to improve the allowable rotational speed.

以下、本発明に係る連結構造及び、該連結構造を用いた転がり軸受用樹脂製保持器、及び該保持器を使用した転がり軸受の好適な実施の形態について、図面を参照して詳細に説明する。
図１は本発明に係る転がり軸受の一実施の形態の斜視図、図２は図１に示した転がり軸受の樹脂製保持器において、保持器を構成する一対の環状体相互を連結する連結構造の連結時の処理手順を示す縦断面図で、図３は図２に示した連結構造の組立完了状態の縦断面図である。 DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a connection structure according to the present invention, a resin cage for a rolling bearing using the connection structure, and a rolling bearing using the cage will be described in detail with reference to the drawings. .
FIG. 1 is a perspective view of an embodiment of a rolling bearing according to the present invention, and FIG. 2 is a connecting structure for connecting a pair of annular members constituting the cage in the resin cage of the rolling bearing shown in FIG. FIG. 3 is a longitudinal sectional view showing a processing procedure at the time of coupling, and FIG. 3 is a longitudinal sectional view of the coupling structure shown in FIG. 2 in an assembled state.

図１に示した転がり軸受１は、内輪３と外輪５との間に配置される複数個の転動体７を、樹脂製保持器９により周方向に所定の配列ピッチに保持するようにした保持器付き転がり軸受である。   The rolling bearing 1 shown in FIG. 1 holds a plurality of rolling elements 7 arranged between an inner ring 3 and an outer ring 5 so as to be held at a predetermined arrangement pitch in the circumferential direction by a resin cage 9. It is a rolling bearing with a vessel.

樹脂製保持器９は、転動体７が配置される内外輪間の転動体収容空間を左右両側から覆うように対向配置される一対の樹脂製の環状体１１、１２から構成され、ている。
各環状体１１、１２には円周方向の複数箇所に転動体７を転動自在に収容するポケット１４が設けられ、これらの一対の環状体１１、１２を連結することで、転がり軸受１内の複数個の転動体７を周方向に所定の離間間隔に保持する左右対称構造の保持器が形成されている。 The resin cage 9 is composed of a pair of resin annular bodies 11 and 12 that are arranged to face each other so as to cover the rolling element housing space between the inner and outer rings where the rolling elements 7 are arranged from both left and right sides.
Each annular body 11, 12 is provided with a pocket 14 that accommodates the rolling element 7 at a plurality of locations in the circumferential direction, and the pair of annular bodies 11, 12 can be connected to each other in the rolling bearing 1. A cage having a left-right symmetric structure for holding the plurality of rolling elements 7 at a predetermined spacing in the circumferential direction is formed.

樹脂製保持器９を構成している一対の環状体１１，１２は、図２（ａ）に示すように、一方の環状体１１の連結面１１ａに一体に突設された柱部２１を、他方の環状体１２の連結面１２ａに形成された連結用穴部２３に挿入した後、図２（ｂ）に示すように、連結用穴部２３の外側に突出した柱部２１の頭部２１ａに超音波溶着加締めをすることで、相互に連結一体化される。   As shown in FIG. 2 (a), the pair of annular bodies 11 and 12 constituting the resin cage 9 includes column portions 21 that project integrally with the connection surface 11a of one annular body 11. After being inserted into the connecting hole 23 formed in the connecting surface 12a of the other annular body 12, as shown in FIG. 2B, the head 21a of the column portion 21 protruding outside the connecting hole 23 is obtained. Are connected and integrated with each other by ultrasonic welding.

本実施の形態の場合、柱部２１の側面２１ｂと連結用穴部２３の側面２３ｂには、予め、頭部２１ａへの超音波溶着加締めにより溶着する凹凸２５を設けている。
凹凸２５は、柱部２１の頭部２１ａを超音波溶着する際に、柱部２１に伝達される振動エネルギーの集中により溶融し易いため、該凹凸２５を設けたことで、柱部２１の側面２１ｂと連結用穴部２３の側面２３ｂとの溶着を速やかに達成することができる。
また、それぞれの側面２１ｂ，２３ｂが一旦溶融するため、柱部２１と連結用穴部２３との嵌め合いが隙間嵌めとなることに起因したガタつきの発生や、締まり嵌めとなることに起因した応力発生を防止することができる。 In the case of the present embodiment, the side surface 21b of the column portion 21 and the side surface 23b of the connecting hole portion 23 are previously provided with concavities and convexities 25 that are welded by ultrasonic welding caulking to the head portion 21a.
Since the unevenness 25 easily melts due to the concentration of vibration energy transmitted to the column portion 21 when the head 21a of the column portion 21 is ultrasonically welded, the side surface of the column portion 21 is provided by providing the unevenness 25. Welding between 21b and the side surface 23b of the connecting hole 23 can be quickly achieved.
In addition, since the side surfaces 21b and 23b are once melted, the backlash generated due to the fit between the column portion 21 and the connecting hole portion 23 becomes a gap fit, or the stress caused by an interference fit. Occurrence can be prevented.

以上に説明した樹脂製保持器９において、一対の環状体１１、１２相互の連結は、一方の環状体１１に突設された柱部２１を他方の環状体１２の連結用穴部２３に挿通させて、柱部２１の頭部２１ａを加締めることによる第１の連結構造と、嵌合している柱部２１と連結用穴部２３の側面２１ｂ，２３ｂ同士の溶着による第２の連結構造とによりなされている。
そして、図３に示すように、加締めによる第１の連結構造Ｌ１は、加締めにより径方向に膨出した柱部２１の頭部２１ａが他方の環状体１２を押えるため、柱部２１の軸方向に沿ったガタつきを無くした強固な連結を得る。
また、図３に示すように、溶着による第２の連結構造Ｌ２は、柱部２１の軸方向の連結を補強すると同時に、柱部２１と連結用穴部２３との間の隙間を無くして、柱部２１の軸方向に直交する方向へのガタつきを無くした連結を得る。
従って、上記の樹脂製保持器９の連結構造では、これらの第１の連結構造と第２の連結構造の相乗により、一対の樹脂製の環状体１１、１２相互を軸方向及び軸に直交する周方向の双方にガタつきがなく、しかも、軸方向の連結強度を更に強化して、十分な強度を確保することができる。 In the resin cage 9 described above, the pair of annular bodies 11 and 12 are connected to each other by inserting the column portion 21 projecting from one annular body 11 into the connection hole portion 23 of the other annular body 12. The first connection structure by caulking the head portion 21a of the column part 21, and the second connection structure by welding the side surfaces 21b and 23b of the column part 21 and the connection hole part 23 fitted together. And has been made.
As shown in FIG. 3, the first connecting structure L1 by caulking has the head portion 21a of the column portion 21 bulging in the radial direction by caulking to press the other annular body 12, so A strong connection that eliminates rattling along the axial direction is obtained.
Further, as shown in FIG. 3, the second connection structure L2 by welding reinforces the connection in the axial direction of the column portion 21, and at the same time, eliminates the gap between the column portion 21 and the connection hole portion 23, A connection with no play in the direction perpendicular to the axial direction of the column 21 is obtained.
Therefore, in the connection structure of the resin cage 9 described above, the pair of resin annular bodies 11 and 12 are orthogonal to each other in the axial direction and the axis by synergy of the first connection structure and the second connection structure. There is no backlash in both circumferential directions, and the axial connection strength can be further strengthened to ensure sufficient strength.

また、上記の樹脂製保持器９は、以上に説明した連結構造によって対向配置される一対の環状体１１、１２相互が、ガタつきなく、且つ強固に連結された左右対称構造の保持器となっているため、高速回転時の環状体１１、１２の変形を防止して、転動体７に対して高い保持性能を確保することができる。   Also, the resin cage 9 is a symmetrically structured cage in which the pair of annular bodies 11 and 12 opposed to each other by the coupling structure described above are firmly connected without looseness. Therefore, deformation of the annular bodies 11 and 12 during high-speed rotation can be prevented, and high holding performance for the rolling elements 7 can be ensured.

従って、上記の転がり軸受１としては、高速回転時にも保持機内でのガタつきに起因した異音が発生しにくく、また、保持器の連結強度不足に起因したバレも生じ難くなり、許容回転数の向上が図り易くなる。   Therefore, the above rolling bearing 1 is less likely to generate abnormal noise due to rattling in the retainer even during high-speed rotation, and is less likely to cause burr due to insufficient connection strength of the cage. It becomes easy to improve.

なお、上記実施の形態では、図２に示したように、連結用穴部２３に嵌合させた柱部２１の頭部２１ａを超音波溶着により加締める行為で、同時に、柱部２１と連結用穴部２３の側面同士の溶着も行っている。
しかし、図４に示すように、先に連結用穴部２３の周縁部に超音波振動を与えて、柱部２１と連結用穴部２３の側面同士の溶着を先に完了させ、その後で、超音波振動を柱部２１の頭部２１ａに与えて、頭部２１ａの加締めを行うようにしても良い。 In the above embodiment, as shown in FIG. 2, the head 21 a of the column 21 fitted in the connection hole 23 is caulked by ultrasonic welding, and simultaneously connected to the column 21. Welding of the side surfaces of the hole portion 23 is also performed.
However, as shown in FIG. 4, first, ultrasonic vibration is applied to the peripheral portion of the connecting hole portion 23 to complete the welding of the side surfaces of the column portion 21 and the connecting hole portion 23 first, Ultrasonic vibration may be applied to the head portion 21a of the column portion 21 to caulk the head portion 21a.

また、上記実施の形態の場合、柱部２１の断面は円形で、連結用穴部２３は柱部２１が適度の嵌め合いで嵌合する円形穴としたが、これらの柱部２１及び連結用穴部２３の断面形状は、上記実施の形態の円形に限らない。
また、上記実施の形態では、超音波溶着を容易且つ確実にするために、柱部２１及び連結用穴部２３のそれぞれの側面に凹凸２５を装備したが、いずれか一方の側面にのみ凹凸２５を装備するようにしても良い。 Further, in the case of the above embodiment, the pillar portion 21 has a circular cross section, and the connecting hole portion 23 is a circular hole into which the pillar portion 21 is fitted with an appropriate fit. The cross-sectional shape of the hole 23 is not limited to the circular shape of the above embodiment.
Moreover, in the said embodiment, in order to make ultrasonic welding easy and reliable, although the unevenness | corrugation 25 was equipped in each side surface of the column part 21 and the connection hole part 23, the unevenness | corrugation 25 is provided only in any one side surface. You may make it equip.

本発明に係る転がり軸受の一実施の形態の斜視図である。1 is a perspective view of an embodiment of a rolling bearing according to the present invention. 環状体相互を連結する連結構造の連結時の処理手順を示す縦断面図である。It is a longitudinal cross-sectional view which shows the process sequence at the time of the connection of the connection structure which connects annular bodies mutually. 図２に示した連結構造の組立完了状態の縦断面図である。It is a longitudinal cross-sectional view of the assembly completion state of the connection structure shown in FIG. 図２に示した連結構造における処理手順の別の実施例の説明図である。It is explanatory drawing of another Example of the process sequence in the connection structure shown in FIG.

符号の説明Explanation of symbols

１ 転がり軸受
３ 内輪
５ 外輪
７ 転動体
９ 樹脂製保持器
１１ 環状体（樹脂部材）
１１ａ 連結面
１２ 環状体（樹脂部材）
１２ａ 連結面
１４ ポケット
２１ 柱部
２１ａ 頭部
２１ｂ 側面
２３ 連結用穴部
２３ｂ 側面
２５ 凹凸 DESCRIPTION OF SYMBOLS 1 Rolling bearing 3 Inner ring 5 Outer ring 7 Rolling body 9 Resin cage 11 Ring body (resin member)
11a Connecting surface 12 Ring body (resin member)
12a connecting surface 14 pocket 21 pillar portion 21a head portion 21b side surface 23 connecting hole portion 23b side surface 25 unevenness

Claims (3)

一対の樹脂部材間において、一方の樹脂部材の連結面に突設された柱部を、他方の樹脂部材の連結面に形成された連結用穴部に挿入した後、前記連結用穴部の外側に突出した前記柱部の頭部に超音波溶着加締めをすることで、一対の樹脂部材相互を連結する連結構造であって、
前記柱部と前記連結用穴部の側面に、前記頭部への超音波溶着加締めにより溶着する凹凸を設けたことを特徴とする連結構造。 Between the pair of resin members, after inserting a column portion protruding from the connection surface of one resin member into a connection hole portion formed in the connection surface of the other resin member, the outside of the connection hole portion A connecting structure that connects a pair of resin members by ultrasonic welding caulking to the head of the column portion protruding to
The connection structure characterized by providing the unevenness | corrugation welded by the ultrasonic welding caulking to the said head on the side surface of the said column part and the said connection hole. 対向配置される一対の樹脂製の環状体を連結することで、転がり軸受内の複数個の転動体を周方向に所定の離間間隔に保持する転がり軸受用樹脂製保持器であって、
前記一対の環状体相互の連結が、請求項１に記載の連結構造によってなされていることを特徴とする転がり軸受用樹脂製保持器。 A rolling bearing resin cage that holds a plurality of rolling elements in a rolling bearing at predetermined spacing intervals in the circumferential direction by connecting a pair of opposed annular bodies made of resin,
The pair of annular bodies are connected to each other by the connecting structure according to claim 1. 内外輪間に配置される複数個の転動体相互を、樹脂製保持器により周方向に所定の配列ピッチに保持するようにした転がり軸受であって、
前記樹脂製保持器として、請求項２に記載の樹脂製保持器が使用されていることを特徴とする転がり軸受。 A rolling bearing configured to hold a plurality of rolling elements arranged between the inner and outer rings at a predetermined arrangement pitch in the circumferential direction by a resin cage,
A rolling bearing according to claim 2, wherein the resin cage is used as the resin cage.
JP2007136393A 2007-05-23 2007-05-23 Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer Pending JP2008291881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007136393A JP2008291881A (en) 2007-05-23 2007-05-23 Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007136393A JP2008291881A (en) 2007-05-23 2007-05-23 Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer

Publications (1)

Publication Number Publication Date
JP2008291881A true JP2008291881A (en) 2008-12-04

Family

ID=40166825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007136393A Pending JP2008291881A (en) 2007-05-23 2007-05-23 Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer

Country Status (1)

Country Link
JP (1) JP2008291881A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113007221A (en) * 2021-03-18 2021-06-22 宁波市新世纪轴承有限公司 Bearing and assembly quality
US11209048B1 (en) * 2020-08-21 2021-12-28 Schaeffler Technologies AG & Co. KG Light weight, high frequency welded, 2-piece ball bearing cage assembly
JP2022001774A (en) * 2020-06-19 2022-01-06 古河電気工業株式会社 Fixing structure of attached member, attaching member and fixing method of attaching member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022001774A (en) * 2020-06-19 2022-01-06 古河電気工業株式会社 Fixing structure of attached member, attaching member and fixing method of attaching member
JP7458249B2 (en) 2020-06-19 2024-03-29 古河電気工業株式会社 Fixing structure of mounted parts, mounted parts, and method of fixing mounted parts
US11209048B1 (en) * 2020-08-21 2021-12-28 Schaeffler Technologies AG & Co. KG Light weight, high frequency welded, 2-piece ball bearing cage assembly
CN113007221A (en) * 2021-03-18 2021-06-22 宁波市新世纪轴承有限公司 Bearing and assembly quality

Similar Documents

Publication Publication Date Title
JP5323337B2 (en) Wheel bearing device
JP2007187285A (en) Bush bearing and rack-pinion type steering device of automobile using the same
JP2007043845A (en) Stator structure and manufacturing method thereof
JP4064433B2 (en) Wheel bearing device
JP5167903B2 (en) Wheel bearing device
JP2008291881A (en) Connection structure, resin retainer for rolling bearing using same structure, and rolling bearing using same retainer
KR101141009B1 (en) Rolling bearing and motor device using the same
JP2010036611A (en) Wheel bearing device
KR101337081B1 (en) A flanged hub for the wheel of a motor vehicle
JP5251213B2 (en) Wheel bearing device and manufacturing method thereof
JP5266943B2 (en) Resin cage for rolling bearing and manufacturing method thereof
JP2012180860A (en) Bearing fixation structure
KR101516800B1 (en) Cage for ball bearing
JP2010210036A (en) Bearing support structure
JP4826779B2 (en) Rolling bearing device for wheels
JP2010002043A (en) Bearing for cross shaft coupling
JP5099485B2 (en) Motor and electric power steering apparatus using the same
JP2015200377A (en) constant velocity joint assembly
JP2007120532A (en) Detent structure and rotation detector mounting structure for electric motor
JP2014183631A (en) Press-fit fixture structure
JP5785449B2 (en) Ball seat and ball joint
JP2007223364A (en) Method of manufacturing bearing device for wheel
JP2008309221A (en) Fixed type constant velocity universal joint
JP2008164008A (en) Bearing device for wheel
WO2016152529A1 (en) Roller bearing