WO2016152529A1

WO2016152529A1 - Roller bearing

Info

Publication number: WO2016152529A1
Application number: PCT/JP2016/057399
Authority: WO
Inventors: 晋一吉岡; 章一金澤; 航折戸
Original assignee: Ntn株式会社
Priority date: 2015-03-23
Filing date: 2016-03-09
Publication date: 2016-09-29
Also published as: JP2016180414A

Abstract

A roller bearing of the present invention comprises an inner ring (1), an outer ring (2), a plurality of balls (3), and first and second ring-shaped members (4a, 4b), the roller bearing being further provided with a retainer (4) that retains each of the plurality of balls (3) and a rivet (6) that mutually joins the first and second ring-shaped members (4a, 4b). A bonding plate section (PC) of the first ring-shaped member (4a) and a bonding plate section (PC) of the second ring-shaped member (4b) are joined by the rivet (6), which has been inserted into first and second through-holes (H1, H2) in a state in which a convex section (PP) has been fit into a concave section (CP) so as to retain the balls (3) between a pocket surface (PS) of the first ring-shaped member (4a) and a pocket surface (PS) of the second ring-shaped member (4b).

Description

Rolling bearing

The present invention relates to a rolling bearing, and particularly relates to a rolling bearing provided with a cage.

Some rolling bearings include a cage having a pocket formed by assembling a pair of annular members so as to sandwich a rolling element. In this cage, when the pair of annular members are assembled so as to sandwich the rolling elements, the positions of the pair of annular members are displaced from each other, so that the pocket may be displaced.

For example, Japanese Patent Laying-Open No. 2013-142450 (Patent Document 1) describes a cage in which coupling portions of a pair of annular holding members (annular members) are fixed to each other. In the cage described in this publication, a coupling protrusion formed at the coupling portion of the other annular member is inserted into a through-hole formed at the coupling portion of one annular member. And the front end side of a joint projection part is expanded, and a joint projection part is crimped by a through-hole.

JP 2013-142450 A

In the cage described in the above publication, a gap is required between the coupling protrusion and the through hole so that the distal end side of the coupling protrusion is expanded and the coupling protrusion is crimped to the through hole. Because of this gap, the position of one annular member and the other annular member may deviate from each other when the coupling protrusion is crimped into the through hole. In this case, a shift | offset | difference arises in the pocket which hold | maintains the rolling element of a holder | retainer, when the position of a pair of annular member shift | deviates. As a result, contact between the rolling elements and the cage becomes non-uniform, so that sound, vibration, and temperature are likely to increase. Therefore, there exists a problem that the lifetime as a function of a rolling bearing falls.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a rolling bearing that can suppress an increase in sound, vibration, and temperature by suppressing the mutual displacement of a pair of annular members. Is to provide.

The rolling bearing of the present invention includes an inner ring, an outer ring disposed on the outer peripheral side of the inner ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and first and second annular members, and A cage for holding each of the plurality of rolling elements and a rivet for connecting the first and second annular members to each other are provided. Each of the first and second annular members includes an arcuate pocket wall portion having a hemispherical pocket surface, and a coupling plate extending from the end of the pocket wall portion in the circumferential direction of each of the first and second annular members. The parts are alternately provided in the circumferential direction. The coupling plate portion of the first annular member includes a recess recessed in the thickness direction of the coupling plate portion of the first annular member perpendicular to the radial direction of each of the first and second annular members, and the first annular member And a first through hole penetrating in the thickness direction of the coupling plate portion. The coupling plate portion of the second annular member projects in the thickness direction of the coupling plate portion of the second annular member orthogonal to the radial direction and fits into the recess, and the coupling plate portion of the second annular member. And a second through hole communicating with the first through hole in a state where the convex portion is fitted in the concave portion. Inserted into the first and second through holes in a state in which the convex portion is fitted in the concave portion so as to hold the rolling element between the pocket surface of the first annular member and the pocket surface of the second annular member. The coupling plate portion of the first annular member and the coupling plate portion of the second annular member are connected by a rivet.

According to the rolling bearing of the present invention, the coupling between the coupling plate portion of the first annular member and the second annular member by the rivets inserted into the first and second through holes in a state where the convex portion is fitted in the concave portion. The plate part is connected. For this reason, the first annular member and the second annular member are positioned relative to each other by fitting the convex portion into the concave portion. In this positioned state, the coupling plate portion of the first annular member and the coupling plate portion of the second annular member are connected by rivets inserted into the first and second through holes. Thereby, it can suppress that a mutual position of the 1st annular member and the 2nd annular member shifts. Therefore, the contact between the rolling element and the pocket surface can be made uniform. Thereby, an increase in sound, vibration, and temperature can be suppressed. Therefore, since increase in sound, vibration, and temperature can be suppressed, it is possible to suppress a decrease in life as a function of the rolling bearing.

Preferably, in the above rolling bearing, the recess has a first inclined surface that is inclined so that the opening area of the recess is increased on the second annular member side in the thickness direction of the coupling plate portion of the first annular member. ing. The convex portion is inclined so that the cross-sectional area of the convex portion is reduced toward the first annular member in the thickness direction of the coupling plate portion of the second annular member, and the second inclined surface along the first inclined surface have. Therefore, when the second inclined surface runs along the first inclined surface, the concave portion and the convex portion can be accurately positioned with respect to each other. For this reason, it can suppress that a mutual position of the 1st annular member and the 2nd annular member shifts.

In the above rolling bearing, preferably, the convex portion has a conical shape. The recess has a conical recess that fits in a conical shape. Therefore, the concave portion and the convex portion can be accurately positioned with each other by fitting the conical shape of the convex portion and the conical recess of the concave portion. For this reason, it can suppress that a mutual position of the 1st annular member and the 2nd annular member shifts.

Preferably, in the above rolling bearing, the concave portion includes a first short portion and a first long portion having a longer dimension than the first short portion when viewed from a direction orthogonal to the circumferential direction. Yes. The convex part includes a second short part and a second long part having a longer dimension than the second short part when viewed from a direction orthogonal to the circumferential direction. Therefore, the length dimension of the part which a recessed part and a convex part fit can be enlarged by fitting a 1st longitudinal part and a 2nd longitudinal part. Thereby, a mutual positioning of a recessed part and a convex part can be performed correctly.

In the above rolling bearing, preferably, the first and second longitudinal portions extend in the circumferential direction. For this reason, the shift | offset | difference of the mutual radial position of a recessed part and a convex part can be suppressed. Thereby, it can suppress that the position of the mutual radial direction of the 1st annular member and the 2nd annular member shifts.

In the above rolling bearing, preferably, the first and second longitudinal portions extend in the radial direction. For this reason, the shift | offset | difference of the position of the circumferential direction of a recessed part and a convex part can be suppressed. Thereby, it can suppress that the position of the mutual circumferential direction of the 1st annular member and the 2nd annular member shifts.

In the above-described rolling bearing, preferably, the concave portion includes first and second concave portions. The convex portion includes first and second convex portions that fit into the first and second concave portions, respectively. For this reason, the first convex portion is fitted to the first concave portion, and the second convex portion is fitted to the second concave portion, whereby the convex portion is fitted to the concave portion at a plurality of locations. it can. Thereby, a mutual positioning of a recessed part and a convex part can be performed correctly.

In the above rolling bearing, preferably, the first concave portion and the first convex portion, and the second concave portion and the second convex portion sandwich the first and second through holes in the radial direction. Is arranged. For this reason, it can suppress that the position of the mutual radial direction of the 1st and 2nd through-hole shifts | deviates.

In the rolling bearing, preferably, the first concave portion and the first convex portion, and the second concave portion and the second convex portion sandwich the first and second through holes in the circumferential direction. Is arranged. For this reason, it can suppress that the position of the mutual circumferential direction of a 1st and 2nd through-hole shift | deviates.

In the above rolling bearing, preferably, the coupling plate portion includes a plurality of coupling plate portions arranged in the circumferential direction. The concave portion and the convex portion are provided in at least one of the plurality of coupling plate portions. For this reason, it can suppress that a mutual position of a crevice and a convex part shifts in at least any coupling plate part provided with a crevice and a convex part.

In the above rolling bearing, preferably, the concave portion and the convex portion are provided in two or more of the plurality of coupling plate portions. For this reason, in the some coupling plate part provided with the recessed part and the convex part, it can suppress that a mutual position of a recessed part and a convex part shift | deviates.

In the above rolling bearing, preferably, the concave portion and the convex portion are provided in all of the plurality of coupling plate portions. In all of the plurality of coupling plate portions, it is possible to prevent the positions of the concave portion and the convex portion from shifting from each other.

In the above rolling bearing, preferably, the first through hole has a first chamfered portion on the second annular member side where the diameter of the first through hole is reduced. Therefore, since the rivet is guided by the first chamfered portion, the rivet can be assembled at the center position of the first through hole when the rivet is caulked. Thereby, the mutual position shift of the 1st annular member and the 2nd annular member which arise from the crevice between the 1st penetration hole and a rivet can be controlled.

In the above rolling bearing, preferably, the first through hole includes a plurality of first through hole portions. At least two of the plurality of first through-hole portions have a first chamfered portion. For this reason, a rivet can be assembled | attached to the position of each center in a some 1st through-hole part.

In the above rolling bearing, preferably, all of the plurality of first through hole portions have a first chamfered portion. For this reason, a rivet can be assembled | attached to the position of each center in all the some 1st through-hole parts.

In the above-described rolling bearing, preferably, the second through hole has a second chamfered portion on the first annular member side where the diameter of the second through hole is reduced. Therefore, since the rivet is guided by the second chamfered portion, the rivet can be assembled at the center position of the second through hole when the rivet is caulked. Thereby, the mutual position shift of the 1st annular member and the 2nd annular member which arise from the crevice between the 2nd penetration hole and a rivet can be controlled.

In the above rolling bearing, the second through hole preferably includes a plurality of second through hole portions. At least two of the plurality of second through-hole portions have a second chamfered portion. For this reason, a rivet can be assembled | attached to the position of each center in a some 2nd through-hole part.

In the above-described rolling bearing, preferably, all of the plurality of second through-hole portions have a second chamfered portion. For this reason, a rivet can be assembled | attached to the position of each center in all the some 2nd through-hole parts.

In the above rolling bearing, the rivet preferably has a tapered portion along the second chamfered portion. Therefore, the rivet can be assembled at the center position of the second through hole by the taper portion TP being along the second chamfered portion. Thereby, the mutual position shift of the 1st annular member and the 2nd annular member which arise from the crevice between the 2nd penetration hole and a rivet can be controlled.

As described above, according to the rolling bearing of the present invention, it is possible to suppress an increase in sound, vibration, and temperature by suppressing the displacement of the positions of the first and second annular members. A bearing can be provided.

It is a general | schematic fragmentary sectional view which shows the structure of the deep groove ball bearing in Embodiment 1 of this invention. It is a schematic front view which shows the structure of the rolling element and cage | basket of the deep groove ball bearing of FIG. It is a schematic perspective view which shows the structure of the holder | retainer of the deep groove ball bearing of FIG. It is an enlarged view which shows the P1 part of FIG. FIG. 5 is a sectional view taken along line VV in FIG. 4. It is a disassembled perspective view which shows the P2 part of FIG. It is a disassembled perspective view which shows the structure of the modification 1 of Embodiment 1 of this invention. It is a schematic front view which shows the structure of the modification 2 of Embodiment 1 of this invention. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8. It is a schematic front view which shows the structure of the modification 3 of Embodiment 1 of this invention. It is sectional drawing which follows the XI-XI line of FIG. It is a schematic front view which shows the structure of the modification 4 of Embodiment 1 of this invention. It is a schematic front view which shows the structure of the modification 5 of Embodiment 1 of this invention. It is a schematic front view which shows the structure of the modification 6 of Embodiment 1 of this invention. It is a schematic sectional drawing which shows the structure of the holder | retainer and rivet in Embodiment 2 of this invention. It is a schematic sectional drawing for demonstrating a mode that the rivet of FIG. 15 is crimped. It is a schematic front view which shows the structure of the modification 1 of Embodiment 2 of this invention. It is a schematic sectional drawing which shows the structure of the modification 2 of Embodiment 2 of this invention. It is a schematic sectional drawing for demonstrating a mode that the rivet of FIG. 18 is crimped. It is a schematic front view which shows the structure of the modification 3 of Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
Initially, the structure of a deep groove ball bearing is demonstrated as an example of the rolling bearing in Embodiment 1 of this invention.

1 and 2, the deep groove ball bearing has an inner ring 1, an outer ring 2, balls 3 as a plurality of rolling elements, a cage 4, a sealing plate 5, and rivets 6. Yes. An annular inner ring raceway surface is formed on the outer circumferential surface of the inner ring 1. The inner ring 1 is configured to rotate with a rotor of a motor, for example, and is fitted on a shaft 10 connected to the rotor. The outer ring 2 is disposed on the outer peripheral side of the inner ring 1. An annular outer ring raceway surface is formed on the inner circumferential surface of the outer ring 2. The inner ring raceway surface and the outer ring raceway surface are each formed in a deep groove type.

A plurality of balls 3 as rolling elements are arranged between the outer ring 2 and the inner ring 1. Each of the balls 3 is formed with a ball rolling surface (a surface of the ball 3) as a rolling element contact surface. Each of the plurality of balls 3 is in contact with each of the outer ring raceway surface and the inner ring raceway surface by a ball rolling surface. The plurality of balls 3 are held on an annular track so as to be freely rollable. Thereby, the inner ring | wheel 1 and the outer ring | wheel 2 can rotate relatively mutually.

The cage 4 holds each of the plurality of balls 3. The cage 4 holds each of the plurality of balls 3 at a predetermined interval in the circumferential direction of the cage 4. The cage 4 has a first annular member 4a and a second annular member 4b. When openings at both axial ends of the annular space formed between the inner periphery of the outer ring 2 and the outer periphery of the inner ring 1 are closed by sealing plates 5 such as shield plates attached to both ends of the inner periphery of the outer ring 2 In some cases, the annular space is filled with lubricating grease. The rivet 6 connects the first annular member 4a and the second annular member 4b to each other.

2 and 3, each of first annular member 4a and second annular member 4b has a pocket wall portion PW and a coupling plate portion PC. The pocket wall portion PW has a hemispherical pocket surface PS. The pocket surface PS is formed on the inner peripheral surface of the pocket wall portion PW. The pocket surface PS is formed along the surface of the ball 3. The pocket wall portion PW is formed in an arc shape. The coupling plate portion PC extends from the end of the pocket wall portion PW in the circumferential direction CD of each of the first annular member 4a and the second annular member 4b. Each of the first annular member 4a and the second annular member 4b has a shape in which the pocket wall portions PW and the coupling plate portions PC are alternately provided in the circumferential direction CD. Each of the first annular member 4a and the second annular member 4b may be made of, for example, a synthetic resin molded product, or may be made of a metal molded product such as a copper alloy.

The first annular member 4a and the second annular member 4b are combined so that the pocket surfaces PS face each other, and are integrated by connecting the coupling plate portions PC to each other. A pocket PK is formed between the opposing pocket surfaces PS of the first annular member 4a and the second annular member 4b.

Further, the coupling plate portion PC of the first annular member 4a has a concave portion CP. The coupling plate portion PC includes a plurality of coupling plate portions PCP arranged in the circumferential direction CD. The coupling plate portions PCP are arranged at equal intervals with respect to the center O in the radial direction RD of the first annular member 4a.

Referring to FIGS. 3 to 5, the concave portion CP is formed in the thickness direction of the coupling plate portion PC of the first annular member 4a orthogonal to the radial direction RD of each of the first annular member 4a and the second annular member 4b. Recessed in TD. The concave portion CP is configured to receive the convex portion PP. The recess CP is formed on the surface of the first annular member 4a that faces the second annular member 4b. In the present embodiment, the recess CP is formed in a V shape in a cross-sectional view.

The coupling plate portion PC of the first annular member 4a has a first through hole H1. The first through hole H1 passes through in the thickness direction TD of the coupling plate portion PC of the first annular member 4a. That is, the first through hole H1 penetrates in the direction in which the coupling plate portion PC of the first annular member 4a and the coupling plate portion PC of the second annular member 4b overlap. In the present embodiment, the first through hole H1 is formed to have the same diameter in the thickness direction of the coupling plate portion PC of the first annular member 4a.

The coupling plate portion PC of the second annular member 4b has a convex portion PP and a second through hole H2. The convex part PP protrudes in the thickness direction TD of the coupling plate part PC of the second annular member 4b orthogonal to the radial direction RD. The convex part PP is configured to be insertable into the concave part CP. The convex part PP is fitted in the concave part CP. The convex portion PP is formed on the surface of the second annular member 4b that faces the first annular member 4a. In the present embodiment, the projecting portion PP is formed in a triangular shape in a cross-sectional view.

The second through hole H2 penetrates in the thickness direction TD of the coupling plate portion PC of the second annular member 4b. In other words, the second through hole H2 penetrates in the direction in which the coupling plate portion PC of the first annular member 4a and the coupling plate portion PC of the second annular member 4b overlap. The second through hole H2 communicates with the first through hole H1 in a state where the convex portion PP is fitted in the concave portion CP. In the present embodiment, the second through hole H2 is formed to have the same diameter in the thickness direction TD of the coupling plate portion PC of the second annular member 4b. The diameter of the second through hole H2 is the same as the diameter of the first through hole H1.

The convex portion PP is fitted into the concave portion CP so as to hold the ball 3 between the pocket surface PS of the first annular member 4a and the pocket surface PS of the second annular member 4b. In this state, the rivet 6 is inserted into the first through hole H1 and the second through hole H2. By this rivet 6, the coupling plate portion PC of the first annular member 4a and the coupling plate portion PC of the second annular member 4b are connected. The tips of the rivets 6 inserted into the first through hole H1 and the second through hole H2 are crimped.

The concave portion CP and the convex portion PP may be provided in at least one of the plurality of coupling plate portions PCP. In the present embodiment, the concave portion CP and the convex portion PP are provided in one coupling plate portion PCP.

4 to 6, the concave portion CP includes a first short portion S1 and a first long portion L1 when viewed from a direction orthogonal to the circumferential direction CD. Here, the direction orthogonal to the circumferential direction CD means a plan view direction. The first long portion L1 has a longer dimension than the first short portion S1. The convex part PP includes a second short part S2 and a second long part L2 when viewed from a direction orthogonal to the circumferential direction CD. The second long portion L2 has a longer dimension than the second short portion S2. In the present embodiment, the recess CP is formed in a V shape in a cross-sectional view in the radial direction RD. Further, the concave portion CP is formed so that the side wall expands to the second annular member 4b side in the sectional view in the circumferential direction CD. The convex part PP is formed in a triangular shape in a sectional view in the radial direction RD. Further, the convex portion PP is formed in a trapezoidal shape in a cross-sectional view in the circumferential direction CD. In the present embodiment, the first longitudinal portion L1 and the second longitudinal portion L2 extend in the circumferential direction CD.

Referring to FIG. 5 and FIG. 6, the concave portion CP has a first inclined surface SL1. The first inclined surface SL1 is inclined so that the opening area of the recess CP is increased toward the second annular member 4b in the thickness direction TD of the coupling plate portion PC of the first annular member 4a. The opening area of the recess CP is the area of the opening of the recess CP in a cross section orthogonal to the thickness direction TD.

The convex portion PP has a second inclined surface SL2. The second inclined surface SL2 is inclined so that the cross-sectional area of the convex portion PP is reduced toward the first annular member 4a in the thickness direction TD of the coupling plate portion PC of the second annular member 4b. The cross-sectional area of the convex part PP is the cross-sectional area of the convex part PP in the cross section orthogonal to the thickness direction TD.

The configuration of the concave portion CP and the convex portion PP is not limited to the above configuration, and various configurations can be applied. Hereinafter, modifications of the present embodiment will be described.

First, the configuration of Modification 1 of the present embodiment will be described with reference to FIG. In the first modification of the present embodiment, the convex portion of the second annular member 4b has a conical shape. The concave portion of the first annular member 4a has a conical recess that fits in a conical shape. For this reason, when the conical shape of the convex part of the second annular member 4b and the conical recess of the concave part of the first annular member 4a are fitted, the coupling plate part PC of the first annular member 4a and the first The connecting plate portion PC of the second annular member 4b is positioned.

Subsequently, with reference to FIG. 8 and FIG. 9, a configuration of Modification 2 of the cage 4 in the present embodiment will be described. In the second modification of the present embodiment, the concave portion CP includes a first concave portion CP1 and a second concave portion CP2. The convex part PP includes a first convex part PP1 and a second convex part PP2 that fit into the first and second concave parts CP1 and CP2, respectively. For this reason, the first convex portion PP1 is fitted into the first concave portion CP1, and the second convex portion PP2 is fitted into the second concave portion CP2, whereby the convex portion PP is formed in the concave portion CP at a plurality of locations. Can be fitted.

In the second modification of the present embodiment, the first concave portion CP1 and the first convex portion PP1, and the second concave portion CP2 and the second convex portion PP2 are the first in the radial direction RD. It arrange | positions so that H1 and 2nd through-hole H2 may be pinched | interposed. For this reason, it can control that the position of the mutual radial direction RD of the 1st penetration hole H1 and the 2nd penetration hole H2 shifts.

Subsequently, with reference to FIG. 10 and FIG. 11, the configuration of Modification 3 of the cage 4 in the present embodiment will be described. In the third modification of the present embodiment, the concave portion CP and the convex portion PP extend in the radial direction RD. That is, the first longitudinal portion L1 and the second longitudinal portion L2 extend in the radial direction RD. Although not shown in FIGS. 10 and 11, in the third modification of the present embodiment, the second longitudinal portion L2 shown in FIG. 6 extends in the radial direction RD. In addition, the first concave portion CP1 and the first convex portion PP1, and the second concave portion CP2 and the second convex portion PP2 are the first through hole H1 and the second through hole H2 in the circumferential direction CD. It is arranged so that For this reason, it can suppress that the position of the mutual circumferential direction CD of the 1st through-hole H1 and the 2nd through-hole H2 shifts | deviates.

Subsequently, with reference to FIG. 12, the configuration of Modification 4 of the cage 4 in the present embodiment will be described. Modification 4 of the present embodiment includes the recesses CP and protrusions PP of Modification 3 shown in FIGS. 10 and 11 in addition to the recesses CP and protrusions PP of Modification 2 shown in FIGS. 8 and 9. ing. In the fourth modification of the present embodiment, the concave portion CP and the convex portion PP have two sets of the first concave portion CP1 and the first convex portion PP1, and the second concave portion CP2 and the second convex portion PP2. is doing. That is, the concave portion CP has four concave portions, and the convex portion PP has four convex portions.

The two sets of the concave portion CP and the convex portion PP are arranged so as to sandwich the first through hole H1 and the second through hole H2 in the radial direction RD and the circumferential direction CD, respectively.

Subsequently, with reference to FIG. 13, the configuration of Modification 5 of the cage 4 in the present embodiment will be described. In the fifth modification of the present embodiment, the concave portion CP and the convex portion PP are provided in two or more of the plurality of coupling plate portions PCP. Specifically, the concave portion CP and the convex portion PP are provided in the four coupling plate portions PCP. The four concave portions CP and the convex portions PP (not shown) are arranged at equal intervals at an angle of 90 degrees with respect to the center O in the radial direction RD of the first annular member 4a.

Subsequently, with reference to FIG. 14, the configuration of Modification Example 6 of the cage in the present embodiment will be described. In the sixth modification of the present embodiment, the concave portion CP and the convex portion PP are provided on all of the plurality of coupling plate portions. Specifically, the concave portion CP and the convex portion PP are provided in all eight coupling plate portions. The eight concave portions CP and the convex portions PP (not shown) are arranged at equal intervals at an angle of 45 degrees with respect to the center O in the radial direction RD of the first annular member 4a.

Next, the effect of this Embodiment is demonstrated.
As shown in FIGS. 2 to 4, according to the rolling bearing of the present embodiment, it is inserted into the first through hole H1 and the second through hole H2 in a state where the convex part PP is fitted in the concave part CP. The coupling plate portion PC of the first annular member 4a and the coupling plate portion PC of the second annular member 4b are connected by the rivet 6. For this reason, the 1st annular member 4a and the 2nd annular member 4b are positioned mutually by fitting convex part PP in crevice CP. In this positioned state, the coupling plate portion PC of the first annular member 4a and the coupling plate portion PC of the second annular member 4b are formed by the rivets 6 inserted into the first through hole H1 and the second through hole H2. And are connected. For this reason, it can suppress that the mutual position of the 1st annular member 4a and the 2nd annular member 4b shifts. Therefore, the contact between the balls 3 and the pocket surface PS can be made uniform. Thereby, an increase in sound, vibration and temperature during the operation of the rolling bearing can be suppressed. Therefore, since increase in sound, vibration, and temperature can be suppressed, it is possible to suppress a decrease in life as a function of the rolling bearing.

Further, as shown in FIGS. 5 and 6, according to the rolling bearing of the present embodiment, the second inclined surface SL2 extends along the first inclined surface SL1, so that the concave portion CP and the convex portion PP are mutually connected. Positioning can be performed accurately. For this reason, it can suppress that the mutual position of the 1st annular member 4a and the 2nd annular member 4b shifts.

Also, as shown in FIG. 7, according to the rolling bearing of the first modification of the present embodiment, the conical shape of the convex portion of the second annular member 4b and the conical shape of the concave portion of the first annular member 4a. And the concave portion and the convex portion can be accurately positioned with respect to each other. For this reason, it can suppress that the mutual position of the 1st annular member 4a and the 2nd annular member 4b shifts.

Further, as shown in FIGS. 4 and 6, according to the rolling bearing of the present embodiment, the concave portion CP and the convex portion PP are obtained by fitting the first longitudinal portion L1 and the second longitudinal portion L2. It is possible to increase the length dimension of the portion where the two are fitted. As a result, the concave portion CP and the convex portion PP can be accurately positioned with respect to each other.

As shown in FIGS. 4 and 6, according to the rolling bearing of the present embodiment, the first longitudinal portion L1 and the second longitudinal portion L2 extend in the circumferential direction CD. For this reason, the shift | offset | difference of the position of the radial direction RD of the recessed part CP and the convex part PP can be suppressed. Thereby, it can suppress that the position of the mutual radial direction RD of the 1st annular member 4a and the 2nd annular member 4b shifts | deviates.

Further, as shown in FIGS. 6 and 10, according to the rolling bearing of the third modification of the present embodiment, the first longitudinal portion L1 and the second longitudinal portion L2 extend in the radial direction RD. Yes. For this reason, the shift | offset | difference of the mutual circumferential direction CD of the recessed part CP and the convex part PP can be suppressed. Thereby, it can suppress that the position of the mutual circumferential direction CD of the 1st annular member 4a and the 2nd annular member 4b shifts | deviates.

Further, as shown in FIGS. 8 and 9, according to the rolling bearing of the second modification of the present embodiment, the first convex portion PP1 is fitted into the first concave portion CP1, and the second concave portion. By fitting the second convex portion PP2 to CP2, the convex portion PP can be fitted to the concave portion CP at a plurality of locations. As a result, the concave portion CP and the convex portion PP can be accurately positioned with respect to each other.

8 and 9, according to the rolling bearing of the second modification of the present embodiment, the first concave portion CP1 and the first convex portion PP1, the second concave portion CP2 and the first concave portion CP2 The two convex portions PP2 are arranged so as to sandwich the first through hole H1 and the second through hole H2 in the radial direction RD. For this reason, it can control that the position of the mutual radial direction RD of the 1st penetration hole H1 and the 2nd penetration hole H2 shifts.

10 and 11, according to the rolling bearing of the third modification of the present embodiment, the first concave portion CP1 and the first convex portion PP1, the second concave portion CP2 and the first concave portion CP2 The two convex portions PP2 are arranged so as to sandwich the first through hole H1 and the second through hole H2 in the circumferential direction CD. For this reason, it can suppress that the position of the mutual circumferential direction CD of the 1st through-hole H1 and the 2nd through-hole H2 shifts | deviates.

Further, as shown in FIG. 2, according to the rolling bearing of the present embodiment, the concave portion CP and the convex portion PP are provided in at least one of the plurality of coupling plate portions PCP. For this reason, in at least any one of the coupling plate portions PCP provided with the concave portion CP and the convex portion PP, it is possible to suppress the mutual positions of the concave portion CP and the convex portion PP from shifting.

As shown in FIG. 13, according to the rolling bearing of the fifth modification of the present embodiment, the concave portion CP and the convex portion PP are provided in two or more of the plurality of coupling plate portions PCP. For this reason, in the some coupling plate part PCP provided with the recessed part CP and the convex part PP, it can suppress that the mutual position of the recessed part CP and the convex part PP shift | deviates.

Further, as shown in FIG. 14, according to the rolling bearing of Modification 6 of the present embodiment, the concave portion CP and the convex portion PP are provided in all of the plurality of coupling plate portions PCP. In all of the plurality of coupling plate portions PCP, it is possible to prevent the positions of the concave portion CP and the convex portion PP from shifting from each other.

(Embodiment 2)
The rolling bearing according to the second embodiment of the present invention is mainly different from the rolling bearing according to the first embodiment in the configuration of the first through hole. The rolling bearing according to the second embodiment of the present invention has the same configuration as the rolling bearing according to the first embodiment unless otherwise specified, and the same reference numerals are given to the same or corresponding parts. I will not repeat that explanation.

Referring to FIG. 15, in the present embodiment, the first through hole H1 of the first annular member 4a of the cage 4 has a small diameter of the first through hole H1 on the second annular member 4b side. And a first chamfered portion T1. The first chamfered portion T1 is formed at the same angle with respect to the center line direction of the first through hole H1 over the entire circumference in the circumferential direction of the first through hole H1.

Referring to FIG. 16, the first chamfered portion T <b> 1 is provided on the head side of the rivet 6. The rivet 6 is inserted into the first through hole H1 from the second through hole H2 side, and the rivet 6 is crimped. Thereby, the rivet 6 deforms along the first chamfered portion T1. Therefore, the rivet 6 is engaged with the first chamfered portion T1.

The configuration of the first through hole H1 is not limited to the above configuration, and various configurations can be applied. Hereinafter, modifications of the present embodiment will be described.

First, the configuration of Modification 1 of the present embodiment will be described with reference to FIG. In the first modification of the present embodiment, the first through hole H1 includes a plurality of first through hole portions H1P. At least two of the plurality of first through-hole portions H1P only need to have the first chamfered portion T1. In the first modification of the present embodiment, all of the plurality of first through-hole portions H1P have the first chamfered portion T1. The eight first through-hole portions H1P are arranged at equal intervals at an angle of 45 degrees with respect to the center O in the radial direction RD of the first annular member 4a.

Subsequently, the configuration of Modification 2 of the present embodiment will be described with reference to FIG. In the second modification of the present embodiment, the second through hole H2 of the second annular member 4b of the retainer 4 is a second one in which the diameter of the second through hole H2 decreases toward the first annular member 4a. The chamfered portion T2 is provided. The second chamfered portion T2 is formed at the same angle with respect to the center line direction of the second through hole H2 over the entire circumference in the circumferential direction of the second through hole H2.

In the second modification of the present embodiment, the rivet 6 has a tapered portion TP along the second chamfered portion T2. The tapered portion TP is formed at the same angle with respect to the axial direction of the rivet 6 over the entire circumference of the rivet 6. By inserting the rivet 6 into the second through hole H2, the taper portion TP is engaged with the second chamfered portion T2. When the taper portion TP is along the second chamfered portion T2, the rivet 6 can be assembled at the center position of the second through hole H2.

Referring to FIG. 19, the rivet 6 is inserted into the first through hole H1 from the second through hole H2 side. The rivet 6 is caulked with the tapered portion TP along the second chamfered portion T2. Thereby, the rivet 6 deforms along the first chamfered portion T1. Therefore, the rivet 6 is engaged with both the first chamfered portion T1 and the second chamfered portion T2.

Subsequently, with reference to FIG. 20, a configuration of Modification 3 of the cage in the present embodiment will be described. In the third modification of the present embodiment, the second through hole H2 includes a plurality of second through hole portions H2P. At least two of the plurality of second through-hole portions H2P only need to have the second chamfered portion T2.

In the third modification of the present embodiment, all of the plurality of second through-hole portions H2P have the second chamfered portion T2. The eight second through-hole portions H2P are arranged at equal intervals at an angle of 45 degrees with respect to the center O in the radial direction RD of the second annular member 4b.

Next, the effect of this Embodiment is demonstrated.
As shown in FIGS. 15 and 16, according to the rolling bearing of the present embodiment, the first through hole H <b> 1 is the first through-hole H <b> 1 having a smaller diameter on the second annular member 4 b side. The chamfered portion T1 is provided. Accordingly, since the rivet 6 is guided by the first chamfered portion T1, the rivet 6 can be assembled at the center position of the first through hole H1 when the rivet 6 is crimped. Thereby, the mutual position shift of the 1st annular member 4a and the 2nd annular member 4b which arises from the crevice between the 1st penetration hole H1 and rivet 6 can be controlled.

Moreover, as shown in FIG. 17, according to the rolling bearing of the first modification of the present embodiment, at least two of the plurality of first through-hole portions H1P have the first chamfered portion T1. . For this reason, the rivet 6 can be assembled | attached to the position of each center in several 1st through-hole part H1P.

Moreover, as shown in FIG. 17, according to the rolling bearing of the first modification of the present embodiment, all of the plurality of first through-hole portions H1P have the first chamfered portion T1. For this reason, the rivet 6 can be assembled | attached to the position of each center in all the some 1st through-hole parts H1P.

Further, as shown in FIGS. 18 and 19, according to the rolling bearing of the second modification of the present embodiment, the second through hole H2 is formed on the first annular member 4a side with the second through hole H2. The second chamfered portion T2 has a smaller diameter. Therefore, since the rivet 6 is guided by the second chamfered portion T2, the rivet 6 can be assembled at the center position of the second through hole H2 when the rivet 6 is crimped. Thereby, the mutual position shift of the 1st annular member 4a and the 2nd annular member 4b which arises from the crevice between the 2nd penetration hole H2 and rivet 6 can be controlled.

Moreover, as shown in FIG. 20, according to the rolling bearing of the third modification of the present embodiment, at least two of the plurality of second through-hole portions H2P have the second chamfered portion T2. . For this reason, the rivet 6 can be assembled | attached to the position of each center in several 2nd through-hole part H2P.

Also, as shown in FIG. 20, according to the rolling bearing of the third modification of the present embodiment, all of the plurality of second through-hole portions H2P have the second chamfered portion T2. For this reason, the rivet 6 can be assembled | attached to the position of each center in all the some 2nd through-hole parts H2P.

Further, as shown in FIGS. 18 and 19, according to the rolling bearing of the second modification of the present embodiment, the rivet 6 has a tapered portion TP along the second chamfered portion T2. Therefore, the rivet 6 can be assembled at the center position of the second through hole H2 by the taper portion TP being along the second chamfered portion T2. Thereby, the mutual position shift of the 1st annular member 4a and the 2nd annular member 4b which arises from the crevice between the 2nd penetration hole H2 and rivet 6 can be controlled.

In addition, each said embodiment and each modification can be combined suitably.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 inner ring, 2 outer ring, 3 balls, 4 cage, 4a first annular member, 4b second annular member, 5 sealing plate, 6 rivets, CD circumferential direction, CP recess, CP1 first recess, CP2 1st 2 recesses, H1 first through-hole, H1P first through-hole, H2P second through-hole, H2 second through-hole, L1 first longitudinal, L2 second longitudinal, PC Bonding plate part, PCP bonding plate part, PK pocket, PP convex part, PP1 first convex part, PP2 second convex part, PS pocket surface, PW pocket wall part, RD radial direction, S1 first short part , S2 second short portion, SL1 first inclined surface, SL2 second inclined surface, T1 first chamfered portion, T2 second chamfered portion, TD thickness direction, TP tapered portion.

Claims

Inner ring,
An outer ring disposed on the outer peripheral side of the inner ring;
A plurality of rolling elements disposed between the inner ring and the outer ring;
A cage having first and second annular members and holding each of the plurality of rolling elements;
A rivet connecting the first and second annular members to each other;
Each of the first and second annular members includes an arcuate pocket wall portion having a hemispherical pocket surface, and an end portion of the pocket wall portion in a circumferential direction of each of the first and second annular members. The extending coupling plate portion has a shape provided alternately in the circumferential direction,
The coupling plate portion of the first annular member includes a recess recessed in the thickness direction of the coupling plate portion of the first annular member perpendicular to the radial direction of each of the first and second annular members, A first through hole penetrating in the thickness direction of the coupling plate portion of the first annular member,
The coupling plate portion of the second annular member protrudes in the thickness direction of the coupling plate portion of the second annular member orthogonal to the radial direction and is fitted into the recess, and the second A second through hole that penetrates in the thickness direction of the coupling plate portion of the annular member and communicates with the first through hole in a state where the convex portion is fitted in the concave portion;
In the state where the convex portion is fitted in the concave portion so as to hold the rolling element between the pocket surface of the first annular member and the pocket surface of the second annular member. A rolling bearing in which the coupling plate portion of the first annular member and the coupling plate portion of the second annular member are coupled by the rivet inserted into the two through holes.
The concave portion has a first inclined surface which is inclined so that an opening area of the concave portion is increased on the second annular member side in the thickness direction of the coupling plate portion of the first annular member,
The convex portion is inclined so that a cross-sectional area of the convex portion is reduced toward the first annular member in the thickness direction of the coupling plate portion of the second annular member, and on the first inclined surface. The rolling bearing according to claim 1, wherein the rolling bearing has a second inclined surface.
The convex portion has a conical shape,
The rolling bearing according to claim 1, wherein the recess has a conical recess that fits into the conical shape.
The concave portion includes a first short portion and a first long portion having a dimension longer than the first short portion when viewed from a direction orthogonal to the circumferential direction,
The said convex part contains a 2nd short part and a 2nd long part which has a dimension longer than a said 2nd short part seeing from the direction orthogonal to the said circumferential direction. 2. A rolling bearing according to 2.
The rolling bearing according to claim 4, wherein the first and second longitudinal portions extend in the circumferential direction.
The rolling bearing according to claim 4, wherein the first and second longitudinal portions extend in the radial direction.
The recess includes first and second recess portions;
The rolling bearing according to any one of claims 1 to 6, wherein the convex portion includes first and second convex portions that fit into the first and second concave portions, respectively.
The first concave portion and the first convex portion, and the second concave portion and the second convex portion are arranged so as to sandwich the first and second through holes in the radial direction. The rolling bearing according to claim 7.
The first concave portion and the first convex portion, and the second concave portion and the second convex portion are arranged so as to sandwich the first and second through holes in the circumferential direction. The rolling bearing according to claim 7.
The coupling plate portion includes a plurality of coupling plate portions arranged in the circumferential direction,
The rolling bearing according to any one of claims 1 to 9, wherein the concave portion and the convex portion are provided in at least one of the plurality of coupling plate portions.
The rolling bearing according to claim 10, wherein the concave portion and the convex portion are provided in two or more of the plurality of coupling plate portions.
The rolling bearing according to claim 10, wherein the concave portion and the convex portion are provided in all of the plurality of coupling plate portions.
The first through hole has a first chamfered portion on the second annular member side having a first chamfered portion that reduces the diameter of the first through hole. Rolling bearings.
The first through hole includes a plurality of first through hole portions,
The rolling bearing according to claim 13, wherein at least two of the plurality of first through-hole portions have the first chamfered portion.
The rolling bearing according to claim 13 or 14, wherein all of the plurality of first through hole portions have the first chamfered portion.
The second through hole has a second chamfered portion on the side of the first annular member, the second chamfered portion having a smaller diameter of the second through hole. Rolling bearings.
The second through hole includes a plurality of second through hole portions,
The rolling bearing according to claim 16, wherein at least two of the plurality of second through hole portions have the second chamfered portion.
The rolling bearing according to claim 16 or 17, wherein all of the plurality of second through-hole portions have the second chamfered portion.
The rolling bearing according to any one of claims 16 to 18, wherein the rivet has a tapered portion along the second chamfered portion.