JP2014137134A - Retainer for roller bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retainer for roller bearings capable of preventing the deterioration in assembling property when assembling the retainer into a device being assembled, such as a gear transmission, while suppressing fretting abrasion.SOLUTION: A retainer 10 for use in a roller bearing 1 comprises: a cylindrical holding member 2 comprising a plurality of storage holes that accommodate a plurality of rollers 11 freely to roll, and having a slit split part 2a formed extending in an axial direction ranging over between both end faces; and a frame body 3 having first and second annular members 31 and 32 arranged to face both end faces of the holding member 2 in an axial direction of the plurality of rollers 11, and a connection member 33 that connects the first and second annular members 31 and 32. The connection member 33 is arranged between end faces in a circumferential direction of the holding member 2 in the slit split part 2a, and first and second gaps are formed between the connection member 33 and end faces in a circumferential direction of the holding member 2.

Description

  The present invention relates to a roller bearing retainer.

  2. Description of the Related Art Conventionally, for example, as a bearing used in a transmission of an automobile, a cage in which a roller as a rolling element is divided is divided into a plurality of parts (for example, see Patent Document 1).

  In the roller bearing described in Patent Document 1, a cage is formed by connecting a plurality of arc-shaped members in a ring shape, and the plurality of arc-shaped members are connected by a connecting means. The connecting means includes a groove portion formed on the outer peripheral surface of the arc-shaped member and a retaining ring fitted in the groove portion, and the plurality of arc-shaped members can be relatively moved in the circumferential direction by the connecting means and can be radially Are inseparably linked.

  According to the roller bearing described in Patent Document 1, an outer diameter side member (for example, an idler gear of a transmission) and an inner diameter side member which are disposed so as to be relatively rotatable with a plurality of rollers held by a cage sandwiched in the radial direction. Even when the rotation with the rotation shaft (for example, the transmission rotation shaft) is synchronized and the relative rotation does not occur, the rolling of the roller is promoted by the relative movement between the plurality of arc-shaped members constituting the cage, and the outer diameter side member The occurrence of fretting wear on the inner diameter surface and the outer diameter surface of the inner diameter side member is suppressed. Here, fretting wear means that the roller bears a load at the same position and vibrates slightly, so that the inner peripheral surface of the outer diameter side member and the outer peripheral surface of the inner diameter side member are indented due to wear. It means that occurs.

JP 2011-137510 A

  Incidentally, oil grooves 830 and 840 for holding and flowing the lubricating oil may be formed in the member facing the end face in the axial direction of the cage, for example, as shown in FIG. In the configuration example shown in FIG. 8, the roller bearing 9 is disposed between an annular idler gear 81 as an outer diameter side member and a shaft-shaped shaft 82 as an inner diameter side member. In the roller bearing 9, a cylindrical cage 91 that holds a plurality of rollers 90 in a rollable manner includes a first arcuate member 911 and a second arcuate member 912. Between the circumferential end surface 911a of the first arcuate member 911 and the circumferential end surface 912a of the second arcuate member 912, the relative relationship between the first arcuate member 911 and the second arcuate member 912 is relatively small. A gap S is formed for enabling movement and suppressing fretting wear.

  As shown in FIG. 8B, in the roller bearing 9, the axial end surface 911b of the first arcuate member 911 and the axial end surface 912b of the second arcuate member 912 constitute a transmission or the like. The first component member 83 and the second component member 84 are disposed to face each other. The first component member 83 and the second component member 84 are arranged along the radial direction of the cage 91 on the surfaces facing the axial end surfaces 911 b and 912 b of the first and second arc-shaped members 911 and 912. Extending oil grooves 830 and 840 are formed.

  In this case, for example, when a corner portion 911c that is an intersection of the circumferential end surface 911a and the axial end surface 911b of the first arcuate member 911 is caught on the inner surface of the oil groove 830 formed in the first component 83, The circumferential movement of the first arcuate member 911 is restricted, and the rotation of the roller 90 held by the first arcuate member 911 is restricted. This may cause fretting wear on the inner peripheral surface 81 a of the idler gear 81 and the outer peripheral surface 82 a of the shaft 82.

  In order to suppress this fretting wear, the axial end surface 911b of the first arcuate member 911 and the axial end surface 912b of the second arcuate member 912, the first component member 83 and the second component member 84, However, in this case, two washers must be assembled in addition to the roller bearing 9, which increases the number of assembling steps when assembling the transmission and the like.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a roller bearing retainer capable of suppressing a decrease in assembling property when the retainer is assembled to an assembled device such as a transmission while suppressing fretting wear. And

  In order to achieve the above object, the present invention provides the following roller bearing cages (1) to (3).

(1) A cylindrical holding member having a plurality of accommodation holes for accommodating a plurality of rollers in a rollable manner and having slit-shaped split portions formed between both end surfaces in the axial direction, and the both ends of the holding member A pair of annular members arranged to face the surface, and a frame having a connecting member that connects the pair of annular members, the connecting member between the circumferential end surfaces of the holding member in the split portion A roller bearing retainer disposed and having a gap formed between the connecting member and a circumferential end surface of the holding member.

(2) The holding member includes a plurality of arc-shaped holding members divided by a plurality of the split portions, and the connection member is disposed in each of the plurality of split portions. Roller bearing cage.

(3) The annular member includes an outer flange portion that restricts the movement of the holding member in the radially outward direction with respect to the annular member, and an inner portion that restricts the movement of the holding member in the radially inward direction with respect to the annular member. The roller bearing retainer according to (2), having a flange.

  ADVANTAGE OF THE INVENTION According to this invention, the fall of the assembly | attachment property at the time of attaching a retainer to assembly | attachment apparatuses, such as a transmission, can be suppressed, rotating a retainer smoothly and suppressing fretting wear.

The external appearance perspective view which shows the roller bearing provided with the holder | retainer which concerns on this Embodiment, and the some roller hold | maintained at the holder | retainer. The perspective view which shows the 1st circular arc member and 2nd circular arc member which hold | maintain a some roller. A frame is shown, (a) is a whole perspective view, (b) is the sectional view on the AA line of a frame (a). The cross section which cut a part of roller bearing is shown, (a) is a whole perspective view, (b) is the partially expanded view of (a). (A) is sectional drawing which cut | disconnected the roller bearing in the cross section orthogonal to the central axis. (B) is a partially enlarged view of (a). It is the side view which expands and shows the split part which looked at the roller bearing from the outer peripheral side, and its peripheral part. Sectional drawing which shows the roller bearing which concerns on a modification. The roller bearing which concerns on a prior art example, and its peripheral part are shown, (a) is sectional drawing of an axial direction, (b) is the schematic diagram seen from the circumferential direction.

[Embodiment]
Embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is an external perspective view showing a roller bearing 1 including a cage 10 and a plurality of rollers 11 held by the cage 10 according to the present embodiment.

  The roller bearing 1 is configured by holding a plurality (24 in the example shown in FIG. 1) of cylindrical rollers 11 by a cage 10 so as to be able to roll. The roller 11 has an axial direction parallel to the central axis C of the roller bearing 1.

  The cage 10 includes a holding member 2 that holds the plurality of rollers 11 and a frame body 3 that is disposed so as to surround the holding member 2. The holding member 2 includes a plurality of arc-shaped holding members divided by a plurality of slit-shaped split portions 2a, and is formed in a cylindrical shape as a whole. In the present embodiment, the holding member 2 is configured by a combination of a first arc-shaped holding member 21 and a second arc-shaped holding member 22 divided by two split portions 2a.

  FIG. 2 is a perspective view showing the first arc-shaped holding member 21 and the second arc-shaped holding member 22 that hold the plurality of rollers 11. The first arc-shaped holding member 21 and the second arc-shaped holding member 22 are made of resin such as 46 nylon, 66 nylon, or PEEK (Polyetheretherketone).

  When the first arc-shaped holding member 21 and the second arc-shaped holding member 22 are viewed from a direction parallel to the central axis C of the roller bearing 1, the axial end surfaces thereof (the first arc-shaped holding member 21 The shapes of the axial end faces 21b and 21c and the axial end faces 22b and 22c) of the second arcuate holding member 22 are arcuate.

  The first arcuate holding member 21 has a plurality (12) of receiving holes 210 for storing a plurality (12) of the rollers 11 in a rollable manner. The first arc-shaped holding member 21 is provided between a pair of arc portions 211 and 211 provided in parallel to each other at both ends in the central axis C direction of the roller bearing 1 and between the pair of arc portions 211 and 211. A plurality of column portions 212 extending along the axial direction of the roller bearing 1 are integrally provided. The accommodation hole 210 is formed between two pillar portions 212 adjacent in the circumferential direction. An end surface in the axial direction of the roller 11 accommodated in the accommodation hole 210 faces the arc portion 211.

  The second arcuate holding member 22 is formed in the same manner as the first arcuate holding member 21. That is, the second arc-shaped holding member 22 is provided between a pair of arc portions 221 and 221 provided in parallel to each other at both axial ends of the roller bearing 1 and the pair of arc portions 221 and 221. The roller bearing 1 has a plurality of column portions 222 extending along the axial direction, and a plurality (12 pieces) of the rollers 11 are accommodated in a rollable manner between two column portions 212 adjacent in the circumferential direction. A plurality of (twelve) accommodation holes 220 are formed. The end surface in the axial direction of the roller 11 accommodated in the accommodation hole 220 faces the arc portion 221.

  In the present embodiment, the two split portions 2a are formed at symmetrical positions with respect to the central axis C of the roller bearing 1, and the first arc-shaped holding member 21 and the second arc-shaped holding member 22 are respectively It is semicircular. The split portion 2 a is formed in parallel with the central axis C of the roller bearing 1 across both end faces (one end face 2 b and the other end face 2 c) of the holding member 2 in the axial direction of the roller 11. Here, one end surface 2 b of the holding member 2 is composed of one axial end surface 21 b of the first arc-shaped holding member 21 and one axial end surface 22 b of the second arc-shaped holding member 22. The other end surface 2 c of the holding member 2 is composed of the other axial end surface 21 c of the first arcuate holding member 21 and the other axial end surface 22 c of the second arcuate holding member 22.

  FIGS. 3A and 3B show the frame 3, in which FIG. 3A is an overall perspective view, and FIG. 3B is a cross-sectional view of the frame 3A. The frame 3 is made of a metal such as iron or stainless steel.

  The frame 3 includes a pair of annular members (a first annular member 31 and a second annular member 32) disposed to face both end surfaces 2b and 2c of the holding member 2 in the axial direction of the plurality of rollers 11. There are two connecting members 33 and 33 for connecting the first and second annular members 31 and 32. In the present embodiment, the first and second annular members 31 and 32 and the connecting members 33 and 33 are integrally formed. These members can be connected to each other such as by fitting or engaging. Thus, each may be a separate body.

  The first annular member 31 extends in parallel to the central axis C from a flat plate portion 310 formed in an annular shape so as to face one end surface 2 b of the holding member 2, and an outer peripheral end portion of the flat plate portion 310. The outer flange portion 311 and the inner flange portion 312 extending in parallel with the central axis C from the inner peripheral end of the flat plate portion 310 are integrally provided. A part of the arc portion 211 of the first arc-shaped holding member 21 is disposed between the outer flange portion 311 and the inner flange portion 312. A part of the arc portion 221 of the second arc-shaped holding member 22 is disposed between the outer flange portion 311 and the inner flange portion 312.

  The second annular member 32 is configured in the same manner as the first annular member 31. That is, the second annular member 32 is parallel to the central axis C from the flat plate portion 320 formed in an annular shape facing the other end surface 2 c of the holding member 2, and the outer peripheral end portion of the flat plate portion 320. The extended outer flange portion 321 and the inner flange portion 322 extended in parallel to the central axis C from the inner peripheral end of the flat plate portion 320 are integrally provided. A part of the arc portion 211 of the first arc-shaped holding member 21 is disposed between the outer flange portion 321 and the inner flange portion 322. A part of the arc portion 221 of the second arc-shaped holding member 22 is disposed between the outer flange portion 321 and the inner flange portion 322.

  The outer flange portion 311 of the first annular member 31 and the outer flange portion 321 of the second annular member 32, and the inner flange portion 312 of the first annular member 31 and the inner flange portion 322 of the second annular member 32 are: Projecting from the flat plate portions 310 and 320 toward each other. Thus, the first annular member 31 is formed with an annular groove 31a that accommodates part of the arc portions 211 and 221 of the first and second arc-shaped holding members 21 and 22. Further, the second annular member 32 is formed with an annular groove 32a that accommodates part of the arc portions 211 and 221 of the first and second arcuate holding members 21 and 22.

  The first arc-shaped holding member 21 and the second arc-shaped holding member 22 are arranged on the outer side in the radial direction of the frame 3 by the outer flange portion 311 of the first annular member 31 and the outer flange portion 321 of the second annular member 32. Is prevented from being pulled out, and the inner flange portion 312 and the inner flange portion 322 prevent the frame body 3 from being pulled out radially inward. Further, the first arc-shaped holding member 21 and the second arc-shaped holding member 22 are arranged along the central axis C by the flat plate portion 310 of the first annular member 31 and the flat plate portion 320 of the second annular member 32. The relative movement of the direction is restricted.

  The height (axial direction height) of the inner flange portions 312 and 322 from the flat plate portions 310 and 320 is formed to be lower than the height from the flat plate portions 310 and 320 of the outer flange portions 311 and 321. Therefore, when assembling the first arc-shaped holding member 21 and the second arc-shaped holding member 22 to the frame body 3, the frame body 3 is elastically deformed so that the first annular member 31 and the second annular member are deformed. The first arc-shaped holding member 21 and the second arc-shaped holding member 22 can be assembled from the inside of the member 32.

  The connecting member 33 extends along the central axis C between the first annular member 31 and the second annular member 32, one end being the first annular member 31, and the other end being the first. The two annular members 32 are connected to each other. The connecting member 33 includes a first extending portion 331 formed continuously with an end portion of the outer flange portion 311 of the first annular member 31 and an end portion of the outer flange portion 321 of the second annular member 32. A second extension portion 332 formed continuously with the first extension portion 331, and a third extension portion 333 formed between the first extension portion 331 and the second extension portion 322. ing.

  The third extension part 333 is located inside the frame body 3 with respect to the first extension part 331 and the second extension part 332. The first to third extending portions 331 to 333 extend in parallel to the central axis C, and are between the first extending portion 331 and the third extending portion 333 and the second extending portion. 332 and the third extending portion 333 are connected by inclined portions 334 and 335 inclined with respect to a direction parallel to the central axis C.

  As shown in FIG. 1, the connecting member 33 is interposed between the first arc-shaped holding member 21 and the second arc-shaped holding member 22 in the holding member 2, and is accommodated in the slit-shaped split portion 2a. Yes.

  FIG. 4 shows a cross section of a part of the roller bearing 1, wherein (a) is an overall perspective view, and (b) is a partially enlarged view of (a).

Arc portion 221 of the second arc-shaped holding member 22 has a thin portion 221b having a thick portion 221a having a thickness _{t 1} in the radial direction, the radial thickness _t 2 a _(t 2 _{<t 1),} the thickness It has a taper part 221c formed between the part 221a and the thin part 221b, and the inner diameter gradually increases from the thick part 221a toward the thin part 221b. The thick part 221a is disposed on the inner side in the axial direction (on the receiving hole 220 side), and the thin part 221b is disposed on the outer side in the axial direction.

  In the annular groove 32 a of the second annular member 32, the thin portion 221 b of the arc portion 221 is accommodated. As a result, the inner diameter of the thick portion 221a in the arc portion 221 of the second arc-shaped holding member 22 and the inner diameter of the inner flange portion 312 of the second annular member 32 are substantially the same. Although not shown, the arc portion 211 of the first arc-shaped holding member 21 is configured similarly to the arc portion 221 of the second arc-shaped holding member 22.

  FIG. 5A is a cross-sectional view of the roller bearing 1 cut along a cross section orthogonal to the central axis C. FIG. FIG. 5B is a partially enlarged view of FIG. FIG. 6 is an enlarged side view showing the split part 2a and its peripheral part when the roller bearing 1 is viewed from the outer peripheral side.

The connecting member 33 is disposed between the circumferential end surfaces of the holding member 2 in the split portion 2a. Between the connecting member 33 and the circumferential end surface of the split portion 2a of the holding member 2, first and second gaps S ₁ and S ₂ are formed. More specifically, as shown in FIG. 5B, the connecting member 33 is between the circumferential end surface 21 a of the first arcuate holding member 21 and the circumferential end surface 22 a of the second arcuate holding member 22. disposed, the first gap S ₁ is formed between the one circumferential side surface 33a of the first arc-shaped holding member 21 in the circumferential end surface 21a and the connecting member 33, the second gap S ₂ is the second They are formed between the circumferential end surface 22 a of the arc-shaped holding member 22 and the other circumferential side surface 33 b of the connecting member 33.

As shown in FIG. 5, if the two first width of the gap S ₁ formed respectively between the circumferential opposite end portions and two connecting members 33 of the first curved holding member 21 are equal to each other, each of the first gap _{S 1} in the width (the holding member circumferential width in the direction of 2) _{W 1} is, for example, 0.1 to 1.0 mm. The first arc-shaped holding member 21 can rotate relative to the frame 3 at an angle corresponding to the width W ₁ of the first gap S ₁ .

Similarly, if the two second width of the gap S ₂ formed respectively between the circumferential opposite end portions and two connecting members 33 of the second curved holding member 22 are equal to each other, each second width (holding member circumferential width in the direction of 2) _{W 2} of clearance _{S 2} of, for example, 0.1 to 1.0 mm. Shaped second holding member 22, to the frame 3, it is capable of relative rotation at an angle corresponding to the width W ₂ of the second gap S _2.

  As described above, since the first arc-shaped holding member 21 and the second arc-shaped holding member 22 can be rotated relative to the frame body 3, the first arc-shaped holding member 21 and the second arc-shaped holding member 22 can rotate even when the frame body 3 is not rotated. By rotating the arc-shaped holding member 21 and the second arc-shaped holding member 22 by the vibration of the vehicle or the like, the roller 11 can roll in the receiving holes 210 and 220.

(Operation and effect of the embodiment)
According to the embodiment of the present invention described above, the following operations and effects can be obtained.

(1) One end surface 2 b of the holding member 2 is covered with the first annular member 31 of the frame 3, and the other end surface 2 c of the holding member 2 is covered with the second annular member 32 of the frame 3. Therefore, in the assembly target device (transmission or the like) of the roller bearing 1, even if an oil groove is formed in a portion facing the roller bearing 1 in the axial direction, the first arc-shaped holding member 21 and the second groove are formed in the oil groove. The arc-shaped holding member 22 is not caught. Moreover, since the axial direction end surfaces of the first annular member 31 and the second annular member 32 in the frame 3 are formed by the annular flat surfaces 310 and 320, the first annular member 31 and the second annular member are formed. The rotation of the member 32 is not restricted by an oil groove formed in a portion facing the roller bearing 1 in the axial direction. Thereby, the some roller 11 hold | maintained at the holding member 2 can be rolled smoothly.

(2) Gap in the circumferential direction between the first arc-shaped holding member 21 and the second arc-shaped holding member 22 and the connecting member 33 of the frame 3 (first and second gaps S ₁ and S ₂ ) Therefore, the first arc-shaped holding member 21 and the second arc-shaped holding member 22 can rotate relative to the frame 3. Thereby, even if the outer diameter side member arrange | positioned on the outer side of the roller bearing 1 and the inner diameter side member arrange | positioned on the inner side of the roller bearing 1 synchronize and the frame 3 does not rotate, the several roller 11 , And the fretting wear at the contact portion with the roller 11 is suppressed on the inner diameter surface of the outer diameter side member and the outer diameter surface of the inner diameter side member.

(3) The holding member 2 is configured by a combination of the first arc-shaped holding member 21 and the second arc-shaped holding member 22, which are separate from each other, and the first arc-shaped holding member 21 and the second circle. Two connecting members 33 are interposed between the circumferential end faces 21 a and 22 a of the arc-shaped holding member 22. That is, since the first annular member 31 and the second annular member 32 of the frame 3 are connected by the plurality of connecting members 33, the axial direction between the first annular member 31 and the second annular member 32 is the same. It becomes easy to keep the interval appropriate. Further, since the holding member 2 is divided into the first arc-shaped holding member 21 and the second arc-shaped holding member 22, the first arc-shaped holding member 21 and the second arc-shaped holding member 22 are independent. Thus, the first arcuate holding member 21 and the second arcuate holding member 22 can be relatively rotated with respect to the frame 3. This more reliably suppresses fretting wear.

(4) The first annular member 31 and the second annular member 32 are the outer flange portions 311 and 321 that restrict the outward movement of the first arc-shaped holding member 21 and the second arc-shaped holding member 22. , And inner flange portions 312 and 322 for restricting the inward movement of the first arc-shaped holding member 21 and the second arc-shaped holding member 22, the first circle from the frame 3 The arc-shaped holding member 21 and the second arc-shaped holding member 22 can be prevented from coming off (dropping out). That is, since the holding member 2 and the frame 3 are integrated, the assembling property of the roller bearing 1 to an assembling target device (such as a transmission) is improved.

[Other embodiments]
As mentioned above, although the roller bearing retainer of the present invention has been described based on the embodiment, the present invention is not limited to this embodiment, and may be implemented in various modes without departing from the scope of the present invention. Is possible.

  For example, in the above embodiment, the case where the holding member 2 includes the first arc-shaped holding member 21 and the second arc-shaped holding member 22 and the frame body 3 includes the two connecting members 33 has been described. However, the holding member 2 may be composed of three or more arc-shaped holding members, and the connecting member 33 may be interposed between the respective arc-shaped holding members. Moreover, one split part may be formed in the holding member 2, and the one connection member 33 may be accommodated in this split part.

FIG. 7 is a cross-sectional view showing a roller bearing 1A according to a modified example in which one split portion 20a is formed in the holding member 20 and the frame 3A has one connecting member 33. In this roller bearing 1A, one connecting member 33 of the frame 3A is interposed between two circumferential end surfaces 20b, 20b of the holding member 20 having a C-shaped cross section. In the holding member 20, an accommodation hole 200 for accommodating the roller 11 in a rollable manner is formed between the plurality of column portions 202. Two circumferential end surface 20b of the holding member 20, between the 20b and the connecting member 33, circumferential clearance _S 3, _{S 4} are formed. Other configurations are the same as those of the roller bearing 1 described with reference to FIGS. In the roller bearing 1A configured as described above, the holding member 20 can rotate relative to the frame body 3A in the range of the gaps S ₃ and S ₄ . The plurality of rollers 11 can roll to suppress fretting wear.

  Moreover, in the said embodiment, although the holding member 2 consists of resin and the case where the frame 3 consists of metal was demonstrated, the holding member 2 consists of metal and the frame 3 may be comprised from resin. However, in order to prevent adhesion between the holding member 2 and the frame 3, it is desirable that one of the holding member 2 and the frame 3 is made of resin and the other is made of metal.

DESCRIPTION OF SYMBOLS 1,1A ... Roller bearing, 2 ... Holding member, 2a ... Split part, 2b, 2c ... End face, 3, 3A ... Frame, 9 ... Bearing, 10 ... Cage, 20 ... Holding member, 20a ... Split part, 20b ... circumferential end face, 21 ... first arc-shaped holding member, 21a ... circumferential end face, 21b, 21c ... axial end face, 22 ... second arc-shaped holding member, 22a ... circumferential end face, 22b, 22c ... axis Direction end surface, 31 ... first annular member, 31a ... annular groove, 32 ... second annular member, 32a ... annular groove, 33 ... connecting member, 33a, 33b ... side surface, 81 ... idler gear, 81a ... inner peripheral surface, 82 ... Shaft, 82a ... Outer peripheral surface, 83 ... First component member, 84 ... Second component member, 91 ... Cage, 200 ... Accommodating hole, 202 ... Column portion, 210,220 ... Accommodating hole, 211,221 ... Arc part, 212, 222 ... Column part, 221a ... Thick part 221b ... thin wall portion, 221c ... tapered portion, 310,320 ... flat plate portion, 311,321 ... outer flange portion, 312,322 ... inner flange portion, 331 ... first extending portion, 332 ... second extending portion 333: third extending portion, 334, 335 ... inclined portion, 830, 840 ... oil groove, 911, 912 ... arcuate member, 911a, 912a ... circumferential end surface, 911b, 912b ... axial end surface, 911c ... Corner, C ... central axis, S, S ₃ , S ₄ ... gap, S ₁ ... first gap, S ₂ ... second gap

Claims (3)

A cylindrical holding member having a plurality of accommodation holes for accommodating a plurality of rollers in a rollable manner and having slit-shaped split portions formed between both end faces in the axial direction;
A pair of annular members disposed opposite to the both end faces of the holding member, and a frame having a connecting member that connects the pair of annular members;
The said connecting member is arrange | positioned between the circumferential direction end surfaces of the said holding member in the said split part, and the clearance gap is formed between the said connecting member and the circumferential direction end surface of the said holding member. The holding member comprises a plurality of arc-shaped holding members divided by a plurality of the split portions,
The connecting member is disposed in each of the plurality of split portions,
The roller bearing retainer according to claim 1. The annular member includes an outer flange portion that restricts movement of the holding member in the radially outward direction with respect to the annular member, and an inner flange portion that restricts movement of the holding member in the radially inward direction with respect to the annular member. Have
The roller bearing retainer according to claim 1 or 2.

Images