JP2014005919A - Thrust bearing retainer, roller with retainer, and thrust bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thrust bearing retainer capable of making a bearing constituting member into a non-separation style more properly.SOLUTION: A thrust bearing retainer (11) includes: a disc section (13) that is formed into a disc shape, that is provided with a hole (14) at a center in a radial direction, and on which plural pockets (15) housing a rolling element are provided at intervals in a circumferential direction; a collar section (22) extending in an axial direction from an end on an outside diameter side of the disc section (13); and staking sections (23a-23d) as projection sections projecting in a radial direction from the collar section (22) toward a side on which the pockets (15) are positioned.

Description

  The present invention relates to a cage for a thrust bearing (hereinafter sometimes simply referred to as “cage”), a roller with a cage, and a thrust bearing.

  In a vehicle transmission, a torque converter, a car air conditioner compressor, and the like, a thrust needle roller bearing that employs a needle, that is, a needle roller, may be used as a rolling element at a location where a thrust load is applied. The configuration of the thrust needle roller bearing is described in Registered Utility Model No. 2515852 (Patent Document 1), Utility Model Publication No. Sho 61-28095 (Patent Document 2), and Japanese Patent Laid-Open No. 2003-83339 (Patent Document 3). It is disclosed.

Registered Utility Model No. 2515852 Utility Model Publication No. Sho 61-28095 JP 2003-83339 A

  A general thrust needle roller bearing includes a plurality of needle rollers, a cage that holds the plurality of needle rollers, and a race ring having a raceway surface on which the needle rollers roll. When a thrust needle roller bearing is incorporated into an automobile transmission or the like, the three-piece unit, that is, a plurality of needle rollers, a cage, and a bearing ring are preliminarily assembled to improve the incorporation. It is integral, and each bearing component member is required to be a non-separable type.

  Here, according to Patent Document 1, a part of the tip edge portion of the raceway ring collar is extruded to the cage side, the tip edge portion of the raceway ring collar and the cage are engaged, Non-separated specification. Further, according to Patent Document 2, the front end edge of the flange of the bearing ring is bent to the cage side over the entire circumference, and the flange and the cage are locked to achieve non-separation specifications. Further, according to Patent Document 3, a part of the tip edge portion of the collar of the race ring is bent, and the race ring and the cage are set to be non-separable specifications by an overhang portion formed by the bending process.

  In Patent Documents 1 to 3, a bending claw is formed on the cage side by bending or the like of the bearing ring, and a part of the cage is hooked on the bending claw so as to have a non-separation specification. However, according to such a configuration, it is necessary to employ a raceway having a thickness that can be bent. That is, it is necessary to employ a relatively thin bearing ring. If it does so, the part in which the track surface which receives a thrust load among the track rings comprised from a single plate will also become thin. As a result, the thrust needle roller bearing cannot receive a large thrust load. In this case, in a portion where the raceway surface is located, it may be considered that a flat washer is attached to a surface side opposite to the raceway surface to increase the thickness on the side where the raceway surface is located. However, the thrust needle roller bearing integrated with the three-piece unit and this washer are separate members, which may impair assemblability.

  An object of the present invention is to provide a retainer for a thrust bearing in which the bearing component can be more appropriately non-separated.

  Another object of the present invention is to provide a thrust bearing capable of appropriately making a bearing component member a non-separable type.

  Still another object of the present invention is to provide a roller with a cage that can make a bearing component more appropriately non-separable.

  A thrust bearing retainer according to the present invention is a thrust bearing retainer that retains rolling elements and receives a thrust load. Here, the cage of the thrust bearing has a disk shape, a hole is provided at the center in the radial direction, and a plurality of pockets containing rolling elements are provided at intervals in the circumferential direction. And a flange portion extending in the axial direction from at least one of the inner diameter portion and the outer diameter portion of the disk portion, and a protrusion portion protruding in the radial direction from the flange portion toward the side where the pocket is located.

  According to such a configuration, in the retainer of the thrust bearing, the collar portion extending in the axial direction from at least one of the inner diameter portion and the outer diameter portion of the disk portion is provided, and the pocket is located from the collar portion. Since there is a protrusion that protrudes in the radial direction toward the side, the protrusion is hooked on the raceway, and the cage is combined so that it holds the rolling element and the raceway. The wheel can be in a non-separable form. In this case, there is no restriction on the thickness of the raceway because there is no need for bending or the like for the raceway to be a non-separable type. Then, when it is desired to obtain a large load capacity as a thrust bearing, the thickness of the portion where the raceway surface is located can be set to a sufficient thickness that can withstand a large thrust load. Therefore, in such a thrust bearing retainer, the bearing component can be more appropriately non-separated.

  Moreover, you may comprise so that a protrusion part may be provided in the edge part of the axial direction of a collar part.

  Moreover, you may comprise a protrusion part so that at least any one of a staking, a bending nail | claw, and a falling may be included.

  Further, the disk portion may include a pair of annular portions having different diameters and a plurality of pillar portions that connect the pair of annular portions and extend in the radial direction so as to form a pocket.

  Moreover, you may comprise so that the fall prevention part which prevents the rolling element accommodated in the pocket from dropping from the pocket may be provided.

  Moreover, you may comprise the drop-off prevention part so that the space | interval of the pillar part which forms a pocket adjacent to the circumferential direction may be made smaller than the diameter of a rolling element.

  Moreover, you may comprise a drop-off prevention part including the protrusion nail | claw which protrudes in the pocket side from at least any one of the both side wall surfaces of the pillar part which adjoins the circumferential direction and forms a pocket.

  Moreover, you may comprise the protrusion nail | claw so that it may be formed using at least any one of a surface pressing process, a crimping process, and a burnishing process.

  Further, in a cross section cut along a plane that is parallel to the rotation axis of the cage and includes the rotation axis, the column portion extends from the pair of annular portions in the radial direction toward the side where the pockets are located. The protruding portion, the pair of axially extending portions that extend in the axial direction from the respective pocket-side ends of the pair of radially extending portions, and both ends of the pair of axially extending portions are connected to each other A connecting portion extending in the radial direction may be included.

  In another aspect of the present invention, a thrust bearing includes a cage for any of the above-described thrust bearings, a plurality of rollers accommodated in a pocket, and a bearing ring having a raceway surface on which the rollers roll. The track ring is integrated with the cage by the protruding portion.

  Such a thrust bearing can make a bearing component more appropriately a non-separation type.

  Further, the raceway ring may be provided with a concave portion provided at a position facing the protruding portion and recessed inwardly so as to receive the protruding portion.

  Moreover, you may comprise a recessed part so that it may be formed using at least any one of a surface pressing process, a crushing process, and a shaving process.

  In still another aspect of the present invention, the roller with cage includes any of the above-described thrust bearing cages and a plurality of rollers accommodated in pockets.

  In such a roller with cage, the bearing component can be more appropriately made into a non-separable type.

  According to such a configuration, in the retainer of the thrust bearing, the flange portion extending in the axial direction from at least one of the inner diameter portion and the outer diameter portion of the disk portion is provided, and the side where the pocket is located from the flange portion. Since the projecting portion projecting radially is provided, the retainer, the rolling element, and the bearing ring are combined so that the projecting portion is hooked on the bearing ring and the cage holds the rolling element and the bearing ring. Can be in a non-separable form. In this case, there is no restriction on the thickness of the raceway because there is no need for bending or the like for the raceway to be a non-separable type. Then, when it is desired to obtain a large load capacity as a thrust bearing, the thickness of the portion of the raceway where the raceway surface is located can be set to a sufficient thickness to withstand a large thrust load. Therefore, in such a thrust bearing retainer, a thrust bearing provided with such a thrust bearing retainer, and a roller with retainer, the bearing component can be more appropriately made into a non-separable type.

It is a figure which shows the holder | retainer of the thrust needle roller bearing which concerns on one Embodiment of this invention. It is an expanded sectional view which expands and shows a part of cage of the thrust needle roller bearing shown in FIG. It is a figure which shows a part of cage | basket of the thrust needle roller bearing shown in FIG. It is an expanded sectional view which expands and shows a part of cage of the thrust needle roller bearing shown in FIG. It is an expansion perspective view which shows a part of cage | basket of the thrust needle roller bearing shown in FIG. 1, and shows the part in which the staking mentioned later is not provided. It is an expansion perspective view which shows a part of cage | basket of the thrust needle roller bearing shown in FIG. 1, and shows the part provided with the staking mentioned later. It is a figure which shows the bearing ring with which the thrust needle roller bearing which concerns on one Embodiment of this invention is equipped. It is sectional drawing which shows a part of track ring shown in FIG. It is sectional drawing which shows a part of thrust needle roller bearing provided with the retainer of the thrust needle roller bearing which concerns on one Embodiment of this invention. It is sectional drawing which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is a perspective view which shows a part of cage of the thrust needle roller bearing shown in FIG. It is sectional drawing which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is a perspective view which shows a part of cage | basket of the thrust needle roller bearing shown in FIG. It is a perspective view which shows a part of cage of the thrust needle roller bearing which concerns on other embodiment of this invention. It is sectional drawing which shows a part of thrust needle roller bearing which concerns on this invention provided with the holder | retainer shown in FIG. It is a perspective view which shows a part of cage of the thrust needle roller bearing which concerns on other embodiment of this invention. It is sectional drawing which shows a part of thrust needle roller bearing which concerns on this invention provided with the holder | retainer shown in FIG. It is sectional drawing which shows a part of track ring with which the thrust needle roller bearing which concerns on further another embodiment of this invention is equipped. It is sectional drawing which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is a figure which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is an expanded sectional view which expands and shows a part of cage of the thrust needle roller bearing shown in FIG. It is a figure which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is an expanded sectional view which expands and shows a part of cage of the thrust needle roller bearing shown in FIG. It is a figure which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is an expanded sectional view which expands and shows a part of cage of the thrust needle roller bearing shown in FIG. It is a figure which shows a part of cage | basket of the thrust needle roller bearing which concerns on other embodiment of this invention. It is an expanded sectional view which expands and shows a part of cage of the thrust needle roller bearing shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a retainer of a thrust needle roller bearing according to an embodiment of the present invention (hereinafter sometimes simply referred to as “retainer”). FIG. 2 is an enlarged cross-sectional view showing a part of the cage of the thrust needle roller bearing shown in FIG. FIG. 3 is a view showing a part of the cage of the thrust needle roller bearing shown in FIG. FIG. 4 is an enlarged cross-sectional view showing a part of the cage of the thrust needle roller bearing shown in FIG. 5 and 6 are enlarged perspective views showing a part of the cage of the thrust needle roller bearing shown in FIG.

  1 and 3 correspond to views seen from the direction of the rotation axis 12 of the cage 11. FIG. 2 is a cross section taken along a plane parallel to the rotation axis 12 of the cage 11 and including the rotation axis 12. FIG. 2 is an enlarged view cut and enlarged at the II-II cross section shown in FIG. FIG. 3 is an enlarged view of a portion indicated by III surrounded by a two-dot chain line in FIG. 4 is an enlarged view of a cross section taken along the line IV-IV shown in FIG. FIG. 5 is a perspective view corresponding to the portion shown in FIG. FIG. 5 shows a portion where staking described later is not provided. FIG. 6 shows a portion where staking described later is provided. In FIG. 2, the rotation axis 12 of the cage 11 is indicated by a one-dot chain line. In FIG. 1, the rotation axis 12 of the cage 11 is represented by a point. Note that the direction in which the rotation axis 12 of the cage 11 extends corresponds to the axial direction of the thrust needle roller bearing, that is, the direction in which the rotation shaft (not shown) supported by the thrust needle roller bearing extends.

1 to 6, a thrust needle roller bearing retainer 11 according to an embodiment of the present invention has an arrow A ₁ that is the front and back direction of the paper surface in FIG. 1 and the vertical direction of the paper surface in FIG. The thrust needle roller bearing is provided with a plurality of needle rollers (not shown) that receive a load in the thrust direction corresponding to the direction or the opposite direction. A thrust needle roller bearing having such a retainer 11 is used at a location where a thrust load is applied in an automobile transmission, a torque converter, a car air conditioner compressor, and the like. During the operation of the bearing, the cage 11 provided in the thrust needle roller bearing rotates around the rotation axis 12 of the cage 11 shown in FIGS. 1 and 2. Incidentally, the radial direction of the retainer 11 is a direction of the direction or vice versa indicated by the arrow A ₂ in 1, etc. FIG.

  The cage 11 holds a plurality of needle rollers as rolling elements. The cage 11 includes a disc-shaped disc portion 13. A hole 14 is provided in the radial center of the disc portion 13. The hole 14 is a through hole penetrating in the plate thickness direction, that is, in the axial direction. A rotation shaft (not shown) supported by a thrust needle roller bearing is disposed in the hole 14. The shape of the disc portion 13 is a flat plate shape that extends straight in the radial direction. Further, the disk portion 13 is provided with a plurality of pockets 15 for accommodating the needle rollers so as to penetrate in the plate thickness direction, that is, in the axial direction at intervals in the circumferential direction.

The disc portion 13 includes a pair of annular portions 16a and 16b having different diameters and a plurality of column portions 17a and 17b that extend in the radial direction so as to form a pocket 15 by connecting the pair of annular portions 16a and 16b. It is the composition which includes. Here, as shown in FIG. 1, the inner diameter L ₁ of the annular portion 16a located on the outer diameter side is configured larger than the inner diameter L ₂ of the annular portion 16b located on the inner diameter side. The inner diameter surface 18 a of the annular portion 16 a constitutes a wall surface on the outer diameter side of the pocket 15. The inner diameter surface 19 a of the annular portion 16 b constitutes the hole 14, and the outer diameter surface 19 b of the annular portion 16 b constitutes a wall surface on the inner diameter side of the pocket 15.

Between the pockets 15 adjacent to each other in the circumferential direction, pillar portions 17a, 17b and the like are arranged. That is, the pockets 15 adjacent to each other in the circumferential direction are spaced apart in the circumferential direction by the pillar portions 17a and the like. Since the shapes of the plurality of column portions 17a and the like are basically the same, the shapes will be described using the column portions 17a. As for the column portion 17a, the interval in the circumferential direction of the column portion 17a on the annular portion 16b side located on the inner diameter side is the narrowest, and as the annular portion 16a located on the outer diameter side, that is, the outer diameter side approaches, the circumferential direction This is a shape in which the interval of the width increases. Further, the side wall surfaces 20a, 20b of the column portions 17a, 17b that form the pockets 15 adjacent to each other in the circumferential direction are configured to extend straight in the radial direction. That is, the circumferential direction of the spacing of both sidewall surfaces 20a, 20b constituting the pockets 15 indicated by the length L ₃ in Fig. 4 is made equal in position in the radial direction. The spacing in the circumferential direction between the side wall surfaces 20a and 20b will be described later.

The cage 11 includes a flange portion 22 that extends from the end portion 21 on the outer diameter side of the disc portion 13 in the plate thickness direction, that is, in the axial direction. Specifically, the flange portion 22, of the disc portion 13, the axial direction indicated from the end 21 of the outer diameter side of the annular portion 16a located on the radially outer side by an arrow A ₁ in the opposite direction in FIG. 2 It is provided so that it may extend straight. Moreover, the collar part 22 continues in the circumferential direction and is provided in an annular shape. In addition, the collar part is not provided in the inner diameter side.

Further, the retainer 11 is provided with a drop-off preventing portion that prevents the needle rollers housed in the pocket 15 from dropping from the pocket 15. As the drop-off preventing portion, the interval in the circumferential direction of the pocket 15, that is, the interval between the side wall surfaces 20 a and 20 b in the adjacent column portions 17 a and 17 b forming the pocket 15 indicated by the length L ₃ described above is accommodated in the pocket 15. It is comprised by being formed smaller than the roller diameter of the needle roller. This prevents the needle roller accommodated in the pocket 15 from falling off in the axial direction where the pocket 15 is located. When the cage 11, the needle roller, and the bearing ring (not shown) are combined as a thrust needle roller bearing, the bearing ring is disposed on the side opposite to the axial side where the pocket 15 is located. Therefore, the needle rollers do not fall off on the side opposite to the axial side where the pocket 15 is located. This will be described later.

  Here, the retainer 11 includes four stakings 23a, 23b, 23c, and 23d as projecting portions that project radially from the flange portion 22 toward the side where the pocket 15 is located. Here, the staking 23a will be described. The staking 23a causes the end 24 in the axial direction of the collar portion 22 at a corresponding portion to protrude in the radial direction toward the side where the pocket 15 is located, in this case, the inner diameter side. It is provided as such. In this case, the end 24 in the axial direction of the flange portion 22 is pushed straight into the inner diameter side, the outer diameter surface 18b corresponding to the end 24 is recessed, and the inner diameter surface 18a protrudes toward the inner diameter side by the amount of the recess. It is provided to let you. The inner diameter surface 25a and the outer diameter surface 25b provided with the staking 23a have an arc shape when viewed from the direction of the rotation axis 12 of the cage 11 shown in FIG. The other stakings 23b to 23d are similarly provided. Each of the four stakings 23a to 23d is provided at approximately 90 ° intervals in the circumferential direction.

  According to such a configuration, the cage 11 of the thrust needle roller bearing is provided with the flange portion 22 extending in the axial direction from the end portion 21 on the outer diameter side of the disc portion 13, and the pocket 15 is positioned from the flange portion 22. Since four stakings 23a to 23d are provided as projecting portions projecting in the radial direction toward the side, the four stakings 23a to 23d serving as the projecting portions are hooked on the raceway, and the cage 11 is The retainer 11, the needle roller, and the bearing ring can be made into a non-separable type by combining needle rollers and rolling rings as rolling elements. In this case, there is no restriction on the thickness of the raceway because there is no need for bending or the like for the raceway to be a non-separable type. Then, when it is desired to obtain a large load capacity as a thrust needle roller bearing, the thickness of the portion where the raceway surface is located can be set to a sufficient thickness that can withstand a large thrust load. Therefore, the cage 11 of such a thrust bearing can make a bearing structural member a non-separation type more appropriately.

  This will be further described. FIG. 7 is a view showing a bearing ring provided in a thrust needle roller bearing according to an embodiment of the present invention. FIG. 8 is a cross-sectional view showing a part of the raceway shown in FIG.

With reference to FIG. 7 and FIG. 8, the bearing ring 26 of the thrust needle roller bearing has a disk shape. A hole 27 is provided in the radial center of the raceway ring 26. The hole 27 is a through hole penetrating in the plate thickness direction, that is, in the axial direction. The diameter of the hole 27 is configured in the same manner as the diameter of the hole 14 provided in the cage 11. That is, the inner diameter surface 28a of the bearing ring 26 constitutes a hole 27, and the inner diameter _{L 2} of the retainer 11 is configured equal to the inner diameter _{L 4} of the bearing ring 26 shown in FIG. In the hole 27, a rotating shaft (not shown) supported by a thrust needle roller bearing is disposed in the same manner as the cage 11 described above. Since the rotation axis 12 of the cage 11 and the center axis of the raceway are the same, they are indicated by the line 12 as in FIGS. 1 and 2.

  In the raceway ring 26, the raceway surface 29a on which the needle rollers roll is arranged on the back side of the paper surface in FIG. 7, that is, on the lower side in FIG. That is, needle rollers are arranged on the lower side in FIG.

  In the raceway ring 26, on the surface 29b on the opposite side to the side where the raceway surface 29a is located, a concave portion 30 that is recessed inward is provided at an end portion on the outer diameter side. Specifically, the recess 30 is formed so as to be recessed inward in the radial direction from the outer diameter surface 28b of the raceway ring 26, and is opposed to the raceway surface 29a and a first wall portion 31a extending in an axial direction and extending in the axial direction. The second wall portion 31b is formed to be recessed inward in the axial direction from the side surface 29b and extend in the radial direction. This recessed part 30 is provided so that the staking 23a-23d as a protrusion part mentioned above may be received. That is, the recess 30 has a shape that is recessed in the inner diameter side and in the axial direction by an amount that allows the protrusion amount of the stakings 23a to 23d of the cage 11 provided to protrude toward the inner diameter side.

  For this recess 30, for example, a single plate-like member corresponding to the raceway is prepared, and at least one of surface pressing, crushing, and shaving is applied to a portion corresponding to the recess 30. You may comprise so that it may be formed using any one.

  FIG. 9 is a cross-sectional view showing a part of a thrust needle roller bearing provided with a retainer for a thrust needle roller bearing according to an embodiment of the present invention. FIG. 9 shows a case where the retainer 11 is cut along a cross section including the column portion 17a. Referring to FIG. 9, a thrust needle roller bearing 33 according to an embodiment of the present invention includes a cage 11 shown in FIG. 1 and the like, a race ring 26 shown in FIG. 7 and the like, and a plurality of needle rollers. 34. The plurality of needle rollers 34 are accommodated and held in a pocket 15 provided in the cage 11. The needle rollers 34 accommodated in the pocket 15 roll on the raceway surface 29 a of the raceway ring 26.

Here, the relationship between the bearing ring 26 and the cage 11 in which the needle rollers 34 are accommodated in the pocket 15 will be described. Staking 23a to 23d provided on the flange portion 22 of the cage 11 and staking 23a to 23d. Are combined so as to engage with the recess 30 of the bearing ring 26 provided to receive the bearing. In this case, the pillar portion 17a for forming the pocket 15, 17b of the both sidewall surfaces 20a, the spacing 20b, smaller than the diameter of the needle roller 34 shown by the length _{L 5} in FIG. 9, needle rollers 34 pockets It will not drop out of 15. Specifically, one side in the axial direction of the needle rollers 34 housed in the pocket 15, here, can be prevented from falling off in the direction indicated by the arrow A _1. In this case, the rolling surface 35 of the needle roller 34 accommodated in the pocket 15 is exposed in the thickness direction of the cage 11. On the other hand, the other side in the axial direction, i.e., in the direction opposite of the arrow A _1, since the bearing ring 26 is arranged, in the thickness direction of the other side of the cage 11, housed in the pocket 15 The needle roller 34 does not fall off. In this way, the bearing components of the thrust needle roller bearing 33 such as the race ring 26, the needle roller 34, and the cage 11 are appropriately configured as non-separable specifications.

Here, the track ring 26 is a disc shape extending straight in the radial direction except for the portion where the recess 30 is provided, and is not bent or folded back in the plate thickness direction. Therefore, the thickness of the bearing ring 26, specifically, of the bearing ring 26, the axial length L ₆ of the side where the raceway surface 29a and the raceway surface 29a is positioned between surface 29b on the opposite side, large It becomes possible to do. That is, it is possible so as to thicken in response to load applied as a thrust needle roller bearing 33, determine the length L _6.

  For example, the needle roller 34 accommodated in the pocket 15 of the thrust needle roller bearing 33 may be provided with a housing (not shown) having a raceway surface on the side exposed from the cage 11. .

  Here, in said embodiment, although it was set as the structure containing four stakings as a protrusion part which protrudes toward the radial direction by the side where a pocket is located from a collar part, about staking, as needed Any number and location is employed. That is, for example, three stakings may be provided, and each interval may be 120 ° in the circumferential direction, or two stakings may be provided, and each interval may be 180 ° in the circumferential direction. Furthermore, when providing a plurality of stakings, it is not necessary to provide them equally in the circumferential direction. Further, the inner diameter surface and the outer diameter surface constituting the staking may be configured by a plurality of straight lines when viewed from one side in the axial direction without forming an arc shape.

  Further, as a protruding portion that protrudes in the radial direction from the collar portion toward the side where the pocket is located, a bending claw that bends a part of the collar portion that is continuous in an annular shape may be provided.

  FIG. 10 is a sectional view showing a part of the cage of the thrust needle roller bearing in this case. FIG. 11 is a perspective view showing a part of the cage of the thrust needle roller bearing shown in FIG. 10 corresponds to the cross section shown in FIG. 2, and FIG. 11 corresponds to the perspective view shown in FIG. In the configuration of the cage shown in FIG. 10 and FIG. 11, description of portions that are basically equivalent to the configuration of the cage shown in FIG. 1 will be omitted, and differences will be mainly described.

  Referring to FIGS. 10 and 11, a thrust needle roller bearing retainer 36 according to another embodiment of the present invention includes a flange portion 39 that extends in the axial direction from an end portion 38 on the outer diameter side of the disc portion 37. And a bending claw 41 as a protruding portion protruding in the radial direction from the flange portion 39 toward the side where the pocket 40 is located. The bending claw 41 is formed so that a part of the flange 39 is bent at one end 42 in the axial direction toward the inner diameter side. The bending claw 41 is formed by being bent so as to extend straight in the radial direction. That is, the bending claw 41 is provided so that the end portion 42 on one side in the axial direction is bent approximately 90 ° toward the inner diameter side. Such a configuration may be used. Note that two or more bending claws 41 may be provided at intervals in the circumferential direction, such as two or more, that is, three or four. Also, the angle of bending is not limited to 90 °, and may be an angle of less than 90 ° or may be bent at an angle larger than 90 °.

  Moreover, you may make it use together the staking and bending nail | claw provided in the holder | retainer shown in above-mentioned FIG. That is, for example, a pair of stakings may be provided at positions that face each other by 180 °, and a pair of bent claws may be provided at positions that face each other by 180 ° with a 90 ° interval in the circumferential direction.

  In addition, as a protrusion part which protrudes toward the radial direction of the side in which a pocket is located from a collar part, it may be good to provide the falling of the shape which inclined the collar part connected in a ring shape to the inner diameter side.

  Further, as a protruding portion that protrudes in the radial direction from the flange portion toward the side where the pocket is located, a falling having a shape in which the annular flange portion is inclined toward the inner diameter side may be provided.

  FIG. 12 is a sectional view showing a part of the cage of the thrust needle roller bearing in this case. FIG. 13 is a perspective view showing a part of the cage of the thrust needle roller bearing shown in FIG. 12 corresponds to the cross section shown in FIGS. 2 and 10, and FIG. 13 corresponds to the perspective views shown in FIGS. 6 and 11. In the structure of the cage shown in FIGS. 12 and 13, the description of the portion that is basically the same as the structure shown in FIG. 1 is omitted, and the differences are mainly described.

  Referring to FIGS. 12 and 13, a retainer 43 of a thrust needle roller bearing according to still another embodiment of the present invention includes a collar portion extending in the axial direction from an end portion 45 on the outer diameter side of the disc portion 44. 46 and a falling 48 as a projecting portion projecting radially from the flange portion 46 toward the side where the pocket 47 is located. The falling 48 has a shape in which an axial end portion 49 of the flange portion 46 is inclined in an annular shape toward the inner diameter side. That is, the falling 48 is provided so that an end portion 49 on one side in the axial direction of the flange portion 46 is bent over the entire area in the circumferential direction at an angle of less than 90 ° toward the inner diameter side. Such a configuration may be used. Also in this case, the bending angle is arbitrarily determined.

  In the above-described embodiment, the cage is provided with the flange at the end on the outer diameter side of the disc portion. However, the present invention is not limited thereto, and the flange is provided at the end on the inner diameter side of the disc portion. It is good also as a structure which provides a part.

  FIG. 14 is a perspective view showing a part of the cage in this case. FIG. 14 corresponds to the perspective view shown in FIG. Referring to FIG. 14, the retainer 51 has a disc shape and is provided with a hole 52 in the center in the radial direction, and a plurality of pockets 53 for accommodating needle rollers are provided at intervals in the circumferential direction. Disc part 54, the flange part 56 extending in the axial direction from the inner end 55 of the disk part 54, and the side where the pocket 53 is located from the flange part 56, here, in the radial direction toward the outer diameter side. And a projecting portion (not shown) projecting into the housing. Such a configuration may be used. As the protrusion, although not shown in FIG. 14, the above-described staking, bending claws, and falling are employed. In addition, the collar part is not provided in the outer diameter side.

  FIG. 15 is a cross-sectional view showing a part of a thrust needle roller bearing according to the present invention including the cage 51 shown in FIG. FIG. 15 corresponds to the cross section shown in FIG. Referring to FIGS. 14 and 15, a thrust needle roller bearing 57 according to another embodiment of the present invention includes a cage 51, a race ring 58, a plurality of needle rollers 34 shown in FIG. 14 described above. including. The plurality of needle rollers 34 are accommodated and held in a pocket 53 provided in the cage 51. The needle roller 34 accommodated in the pocket 53 rolls on the raceway surface 59 a of the raceway ring 58.

  Here, the configuration of the race ring 58 will be described. In the configuration of the bearing ring 58 provided in the thrust needle roller bearing shown in FIG. 15, the description of the portion that is basically the same as that of the bearing ring shown in FIG. Explained.

  A concave portion 60 that is recessed inward is provided at the inner diameter side end portion of the raceway 58 on the surface 59b opposite to the side where the raceway surface 59a is located. Specifically, the recess 60 is formed so as to be recessed radially outward from the inner diameter surface 61 of the race ring 58, and is connected to the first wall portion 62a extending in the axial direction in an annular shape and the opposite side of the raceway surface 59a. The second wall portion 62b is formed to be recessed inward in the axial direction from the surface 59b and extend in the radial direction. The recess 60 is provided so as to receive a staking 63 or the like as a protruding portion provided in the cage shown in FIG. That is, the concave portion 60 has a shape that is recessed in the outer diameter side and in the axial direction by an amount that allows the protrusion amount of the staking 63 of the cage 51 provided so as to protrude toward the outer diameter side.

  Here, the relationship between the bearing ring 58 and the cage 51 in which the needle rollers 34 are accommodated in the pocket 53 will be described. The staking 63 provided on the collar portion 56 of the cage 51 and the staking 63 are received. It combines so that the recessed part 60 of the provided track ring 58 may be engaged. In this way, the bearing components of the thrust needle roller bearing 57 such as the race ring 58, the needle roller 34, and the cage 51 are appropriately configured as non-separable specifications.

  In addition, about a holder | retainer, it is good also as a structure which provides a collar part about both the edge part by the side of an inner diameter, and the edge part by the side of an outer diameter, and also provides a protrusion part in each collar part.

  FIG. 16 is a perspective view showing a part of the cage in this case. FIG. 16 corresponds to the perspective views shown in FIGS. 5 and 14. Referring to FIG. 16, the cage 64 has a disk shape and is provided with a hole 65 at the center in the radial direction, and a plurality of pockets 66 for accommodating needle rollers are provided at intervals in the circumferential direction. Disc portion 67, an outer diameter side flange portion 69a extending in the axial direction from an outer diameter side end portion 68a of the disk portion 67, and a side where the pocket 66 is positioned from the outer diameter side flange portion 69a, here, the inner diameter An outer diameter side protruding portion (not shown) protruding in the radial direction toward the side, an inner diameter side flange 69b extending in an axial direction from an inner diameter side end 68b of the disc portion 67, and an inner diameter side flange 69b It includes a side where the pocket 66 is located, here, an inner diameter side protruding portion (not shown) protruding radially toward the outer diameter side. The inner diameter side flange 69a and the outer diameter side flange 69b are configured to extend in directions opposite to the axial direction. In this case, the inner diameter side flange 69a is configured to extend downward in the axial direction, and the outer diameter side flange 69b is configured to extend upward in the axial direction. Such a configuration may be used. As the inner diameter side protrusion and the outer diameter side protrusion, although not shown in FIG. 16, the above-described staking, bending claws, falling and the like are employed.

  FIG. 17 is a cross-sectional view showing a part of a thrust needle roller bearing according to the present invention including the cage 64 shown in FIG. FIG. 17 corresponds to the cross section shown in FIGS. 9 and 15. Referring to FIGS. 16 and 17, a thrust needle roller bearing 71 according to still another embodiment of the present invention includes a retainer 64 shown in FIG. 16 and a first axially disposed on one side in the axial direction. It includes a raceway ring 72a, a second raceway ring 72b disposed on the other side in the axial direction, and a plurality of needle rollers 34. The first race ring 72a is arranged so that the rolling surface 73a faces downward in the axial direction in FIG. 17, and the second race ring 72b has the rolling surface 74a facing upward in the axial direction in FIG. Placed in. The plurality of needle rollers 34 are accommodated and held in a pocket 66 provided in the cage 64. The needle rollers 34 accommodated in the pocket 66 roll on the raceway surface 73a of the first raceway ring 72a and the raceway surface 74a of the second raceway ring 72b.

  Here, the configuration of the first track ring 72a is the same as the configuration of the track ring 26 shown in FIGS. That is, in the surface 73b on the opposite side to the side on which the raceway surface 73a is located in the first raceway ring 72a, a concave portion 75a that is recessed inward is provided at the outer diameter side end. Specifically, the recess 75a is formed so as to be recessed inward in the radial direction from the outer diameter surface 76a of the first raceway ring 72a, the first wall 77a extending in the axial direction in a ring shape, and the raceway surface. The second wall portion 77b is formed to be recessed from the surface 73b on the opposite side of 73a in the axially inward side, specifically in the axially lower side, and extending in the radial direction. The concave portion 75a is provided so as to receive a staking 78a as an outer diameter side protruding portion provided in the above-described cage 64. That is, the recess 75a has a shape that is recessed in the inner diameter side and in the axial direction by an amount that allows the protrusion amount of the staking 78a of the cage 64 provided to protrude toward the inner diameter side.

  Next, the configuration of the second track ring 72b will be described. In the configuration of the second bearing ring 72b, description of portions that are basically equivalent to the configuration of the bearing ring shown in FIG. 7 and the like will be omitted, and differences will be mainly described.

  In the second raceway ring 72b, on the surface 74b opposite to the side where the raceway surface 74a is located, a concave portion 75b recessed inward is provided at the inner diameter side end. Specifically, the recess 75b is formed so as to be recessed radially outward from the inner diameter surface 76b of the second raceway ring 72b, and a first wall 79a extending in the axial direction in a ring shape and a raceway surface 74a. The second wall portion 79b is formed to be recessed from the surface 74b opposite to the inner side in the axial direction, specifically, the upper side in the axial direction and extending in the radial direction. The concave portion 75b is provided so as to receive a staking 78b as an inner diameter side protruding portion provided on the inner diameter side collar portion. That is, the recess 75b has a shape that is recessed in the outer diameter side and in the axial direction by an amount that allows the protruding amount of the staking 78b as the inner diameter side protruding portion of the cage 64 provided to protrude toward the outer diameter side.

  Here, the relationship between the first race ring 72a, the second race ring 72b, and the cage 64 in which the needle rollers 34 are accommodated in the pocket 66 will be described as follows. That is, for the first track ring 72a, a staking 78a provided on the outer diameter side flange 69b of the cage 64 and a recess 75a of the first track ring 72a provided to receive the staking 78a. Are combined so that they are engaged. Moreover, about the 2nd track ring 72b, the staking 78b provided in the inner diameter side collar part 69a of the holder | retainer 64, and the recessed part 75b of the 2nd track ring 72b provided so that the staking 78b may be received, Are combined to engage. In this manner, the bearing components of the thrust needle roller bearing 71 such as the first race ring 72a, the second race ring 72b, the needle roller 34, and the cage 64 are appropriately configured as non-separable specifications.

  In the above-described embodiment, the concave portion provided in the raceway is formed, for example, so as to be recessed radially inward from the outer diameter surface of the raceway, and is a first extending in the axial direction in a ring shape. The wall portion and the second wall portion that is formed to be recessed inward in the axial direction from the surface opposite to the raceway surface, specifically in the axially lower side, and extend in the radial direction. However, the shape is not limited to this, and other shapes may be used.

  FIG. 18 is a cross-sectional view showing a part of the bearing ring provided in the thrust needle roller bearing in this case. FIG. 18 corresponds to the cross section shown in FIG. In the configuration of the bearing ring shown in FIG. 18, the description of the portion that is basically the same as that of the bearing ring shown in FIG. 7 and the like will be omitted, and differences will be mainly described.

  Referring to FIG. 18, a bearing ring 81 provided in a thrust needle roller bearing according to still another embodiment of the present invention has a disk shape, and a hole 82 is formed at the radial center of the bearing ring 81. Is provided. In the raceway ring 81, the raceway surface 83a on which the needle rollers roll is located on the lower side in the axial direction.

  In the raceway 81, a surface 84 b opposite to the side where the raceway surface 83 a is located is provided with a recess 84 that is recessed inward at the outer diameter side end. The recessed part 84 is comprised from the wall part 86 extended in the diagonal direction toward the surface 83b from the outer diameter surface 85 of the bearing ring 81. As shown in FIG. The wall portion 86 has a so-called taper shape and is formed to be continuous in an annular shape so as to be recessed inward in the radial direction. About the recessed part 84 comprised by the wall part 86, it is the shape dented by the quantity which accept | permits protrusion amounts, such as staking of the holder | retainer provided so that it may protrude to an internal-diameter side. Such a configuration may be used for the concave portion provided in the raceway ring.

  The shape of the cage may be a so-called W-shaped cross section.

  FIG. 19 is a cross-sectional view showing a part of the cage in this case. FIG. 19 corresponds to the cross section shown in FIG. Further, the cross section shown in FIG. 19 is a cross section cut along a plane parallel to the rotation axis of the cage and including the rotation axis. Referring to FIG. 19, a retainer 87 a according to still another embodiment of the present invention is disk-shaped and has a hole 87 b at the radial center, and a pocket for accommodating needle rollers 34. 87c is provided with a plurality of circumferentially spaced discs 87d, flanges 87e, 87f extending in the axial direction from both the inner and outer diameters of the disc 87d, and pockets from the flanges 87e, 87f. And a protruding portion (not shown) protruding in the radial direction toward the side where 87c is located. The disc portion 87d includes a pair of annular portions 87g and 87h having different diameters and a plurality of pillar portions 87i that connect the pair of annular portions 87g and 87h and extend in the radial direction so as to form a pocket 87c. Here, the column portion 87i includes a pair of radially extending portions 87j and 87k extending radially from the pair of annular portions 87g and 87h toward the side where the pocket 87c is located, and a pair of radially extending portions 87j. A pair of axially extending portions 87l, 87m extending in the axial direction from the end portions of the respective pockets 87c of 87k, and a diameter so as to connect both ends of the pair of axially extending portions 87l, 87m. A connecting portion 87n extending in the direction. That is, the shape of the cage 87a has a substantially W-shaped cross section. Such a configuration may be used.

  In such a configuration, the connecting portion 87n prevents the needle roller from dropping to one side in the axial direction, and the pair of radially extending portions 87j and 87k has a needle roller toward the other side in the axial direction. Can be used as the roller 87p with a cage. That is, it can be handled as an integrated cage and needle rollers. That is, the roller with cage according to one embodiment of the present invention is configured to include the cage 87a and the plurality of needle rollers 34 described above.

  In the above-described embodiment, the drop-off preventing portion provided in the cage is formed so that the interval between the column portions that form pockets adjacent to each other in the circumferential direction is smaller than the diameter of the rolling element. However, the following formats are also adopted.

  FIG. 20 is a view showing a part of a cage according to still another embodiment of the present invention. FIG. 21 is an enlarged sectional view showing a part of the cage shown in FIG. 20 in an enlarged manner. FIG. 20 corresponds to the diagram shown in FIG. FIG. 21 is an enlarged view of a cross section taken along the XXI-XXI cross section shown in FIG.

  Referring to FIGS. 20 and 21, the drop-off preventing portions provided in the retainer 88a are opposed to each other at the central portion in the radial direction on both side wall surfaces 88e and 88f of the adjacent column portions 88c and 88d constituting the pocket 88b. Protruding claws 88g and 88h projecting toward the side wall surfaces 88f and 88e are provided. The circumferential interval between the projection claws 88g and 88h is configured to be smaller than the roller diameter. Such protruding claws 88g and 88h are punched so as to have such a shape when punched when the pocket 88b is punched. Such a configuration may be used as the dropout prevention unit.

  FIG. 22 is a view showing a part of a cage according to still another embodiment of the present invention. FIG. 23 is an enlarged cross-sectional view showing a part of the cage shown in FIG. FIG. 22 corresponds to the diagram shown in FIG. FIG. 23 is an enlarged view of a cross section taken along the line XXIII-XXIII shown in FIG.

  Referring to FIGS. 22 and 23, the drop-off prevention portion provided in the retainer 89a is formed on both sides of one side surface in the plate thickness direction in the circumferentially adjacent column portions 89c and 89d constituting the pocket 89b. A caulking process is performed on portions close to the wall surfaces 89e and 89f. By this caulking process, projecting claws 89g and 89h are provided so as to project toward the side wall surfaces 89f and 89e facing each other in the central portion in the radial direction. The circumferential interval between the protruding claws 89g and 89h is smaller than the roller diameter. Such a configuration may be used.

  FIG. 24 is a view showing a part of a cage according to still another embodiment of the present invention. FIG. 25 is an enlarged cross-sectional view showing a part of the cage shown in FIG. 24 in an enlarged manner. FIG. 24 corresponds to the diagram shown in FIG. FIG. 25 is an enlarged view of a cross section taken along the XXV-XXV cross section shown in FIG.

  Referring to FIGS. 24 and 25, the drop-off prevention portion provided in the retainer 90a performs surface pressing on both side wall surfaces 90e and 90f at the circumferentially adjacent column portions 90c and 90d constituting the pocket 90b. It is formed. In this case, the both side wall surfaces 90e and 90f are pushed diagonally from the side close to one side in the plate thickness direction, and by this face pushing process, the side wall surfaces 90f and 90e facing each other at the radial center are respectively provided. Protruding claws 90g and 90h are provided so that the meat is piled up. The circumferential interval between the protruding claws 90g and 90h is smaller than the roller diameter. Such a configuration may be used.

  FIG. 26 is a view showing a part of a cage according to still another embodiment of the present invention. FIG. 27 is an enlarged sectional view showing a part of the cage shown in FIG. 26 in an enlarged manner. FIG. 26 corresponds to the diagram shown in FIG. FIG. 27 is an enlarged view of a cross section taken along the section XXVII-XXVII shown in FIG.

  Referring to FIG. 26 and FIG. 27, the drop-off prevention portion provided in the retainer 91a is formed by performing burnishing on both side wall surfaces 91e and 91f in the circumferentially adjacent column portions 91c and 91d constituting the pocket 91b. Is done. In this case, the side wall surfaces 91e and 91f are pushed in the vertical direction from the side close to one surface in the plate thickness direction in the vertical direction, and by this burnishing, the side wall surfaces 91f and 91e that face each other with a space in the radial direction. Protruding claws 91g and 91h are provided so as to protrude toward the side. The circumferential interval between the protruding claws 91g and 91h is smaller than the roller diameter. Such a configuration may be used.

  In the above embodiment, in the structure of the cage having a flat disk portion, the projection claw that prevents the needle roller from falling off to one side in the axial direction is provided. Instead, it is good also as providing the protrusion nail | claw which prevents the needle roller from falling off to the both sides of an axial direction, ie, a drop-off prevention part. In this case, it can be handled while holding the needle roller in the cage, and can be used as a roller with a cage.

  Further, in the above embodiment, the flange portion is provided at the outer diameter side end portion or the inner diameter side end portion of the disc portion of the cage. Instead of the end portion, the flange portion may be provided at the outer diameter portion, that is, the portion located on the outer diameter side, or the inner diameter portion, ie, the portion located on the inner diameter side.

  In the above-described embodiment, the through hole penetrating in the thickness direction is provided in the radial center of the disk portion. However, the present invention is not limited to this, and the rotating shaft supported by the thrust bearing is not limited thereto. Depending on the mode, it may be a recess as a hole that does not penetrate in the thickness direction.

  In the above-described embodiment, the projection claws are provided on both side wall surfaces of the adjacent column portions. However, the present invention is not limited to this, and the projection claws may be provided only on one side wall surface.

  In the above-described embodiment, the disk portion includes a pair of annular portions having different diameters and a plurality of column portions extending in the radial direction so as to connect the pair of annular portions and form a pocket. However, the present invention is not limited to such a shape. For example, a configuration that does not include an annular portion on one side of a pair of annular portions is also employed.

  In the above embodiment, the concave portion provided in the raceway is configured to be annularly connected. However, the present invention is not limited to this, and for example, the concave portions are provided by the number corresponding to the portions where staking is provided. You may decide.

  In the above embodiment, the protruding portion is mainly formed by bending the flange portion. However, the present invention is not limited to this, and the protruding portion can be formed by increasing the thickness of a predetermined portion of the flange portion. It is good also as a structure to provide.

  In the above embodiment, the raceway is provided with a recess. However, the present invention is not limited to this, and even if the raceway is a single plate, the raceway and the retainer are connected by the protruding portion. It can be applied if it can be engaged.

  In the above embodiment, needle rollers are used as the rolling elements. However, the present invention is not limited to this, and other rollers such as cylindrical rollers and rod rollers may be employed. Moreover, it is good also as using a ball as a rolling element. That is, it may be a thrust ball bearing.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The retainer of the thrust bearing, the thrust bearing, and the roller with retainer according to the present invention are effectively used when used in a place where a large thrust load is applied.

  11, 36, 43, 51, 64, 87a, 88a, 89a, 90a, 91a Cage, 12-wire, 13, 37, 44, 54, 67, 87d Disc part, 14, 27, 52, 65, 82, 87b hole, 15, 40, 47, 53, 66, 87c, 88b, 89b, 90b, 91b pocket, 16a, 16b, 87g, 87h annular part, 17a, 17b, 87i, 88c, 88d, 89c, 89d, 90c, 90d, 91c, 91d Column, 18a, 19a, 25a, 28a, 61, 76b Inner surface, 18b, 19b, 25b, 28b, 76a, 85 Outer surface, 20a, 20b, 88e, 88f, 89e, 89f, 90e , 90f, 91e, 91f side wall surface, 22, 39, 46, 56, 69a, 69b, 87e, 87f collar, 23a, 23b, 23c, 2 3d, 63, 78a, 78b staking, 21, 24, 38, 42, 45, 49, 55, 68a, 68b end, 26, 58, 72a, 72b, 81 raceway ring, 29a, 59a, 73a, 74a, 83a Track surface, 29b, 59b, 73b, 74b, 83b surface, 30, 60, 75a, 75b, 84 Recessed part, 31a, 31b, 62a, 62b, 77a, 77b, 79a, 79b, 86 Wall part, 33, 57, 71 Thrust Needle Roller Bearing, 34 Needle Roller, 35 Rolling Surface, 41 Bending Claw, 48 Falling, 87j, 87k Radial Extension, 87l, 87m Axial Extension, 87n Connection, 87p Cage Attached rollers, 88 g, 88 h, 89 g, 89 h, 90 g, 90 h, 91 g, 91 h Protruding claws.

Claims (13)

A thrust bearing retainer that holds rolling elements and receives a thrust load,
A disk-shaped disk portion having a hole at the center in the radial direction, and a plurality of pockets for accommodating rolling elements provided at intervals in the circumferential direction;
A collar portion extending in the axial direction from at least one of the inner diameter portion and the outer diameter portion of the disc portion;
A thrust bearing retainer including a projecting portion projecting radially from the collar portion toward a side where the pocket is located. The thrust bearing retainer according to claim 1, wherein the protruding portion is provided at an end portion of the flange portion in the axial direction. The thrust bearing retainer according to claim 1 or 2, wherein the protrusion includes at least one of staking, bending claws, and falling. The disk portion includes a pair of annular portions having different diameters and a plurality of pillar portions that connect the pair of annular portions and extend in the radial direction so as to form the pockets. A cage for a thrust bearing according to claim 1. The retainer of the thrust bearing in any one of Claims 1-4 with which the fall-off prevention part which prevents the drop-off | omission from the said pocket of the said rolling element accommodated in the said pocket is provided. 6. The thrust bearing according to claim 5, wherein the drop-off prevention portion is formed so that an interval between the column portions adjacent to each other in the circumferential direction to form the pocket is smaller than a diameter of the rolling element. Cage. 7. The thrust according to claim 5, wherein the drop-off prevention portion includes a projecting claw that protrudes toward the pocket side from at least one of both side wall surfaces of the column portion that form the pocket adjacent to each other in the circumferential direction. Bearing cage. The retainer of a thrust bearing according to claim 7, wherein the protrusion claw is formed by using at least one of surface pressing, caulking, and burnishing. In a cross section cut by a plane parallel to the rotation axis of the retainer and including the rotation axis, the columnar portion extends from the pair of annular portions in a radial direction toward the side where the pocket is located. A radially extending portion, a pair of axially extending portions extending in the axial direction from the respective pocket-side ends of the pair of radially extending portions, and both ends of the pair of axially extending portions The thrust bearing retainer according to any one of claims 4 to 8, further comprising a connecting portion extending in a radial direction so as to connect the portions. A thrust bearing retainer according to any one of claims 1 to 9,
A plurality of rollers accommodated in the pocket;
Including a raceway having a raceway surface on which the rollers roll,
The thrust bearing is a thrust bearing that is not separated from the cage by the protrusion. The thrust bearing according to claim 10, wherein the bearing ring is provided with a concave portion provided at a position facing the protruding portion and recessed inward so as to receive the protruding portion. The thrust bearing according to claim 11, wherein the recess is formed using at least one of a surface pressing process, a crushing process, and a shaving process. A thrust bearing retainer according to any one of claims 1 to 9,
A roller with a cage, comprising a plurality of rollers accommodated in the pocket.

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