JP2016156394A - Bearing ring and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure strength of a bearing ring containing carbon fiber-reinforced resin.SOLUTION: A bearing ring (1) of a vehicular bearing (10) includes a metal raceway part (13) formed of metal, and a resin part (11) attached to the metal raceway part and formed of carbon fiber-reinforced resin. The metal raceway part has raceway surfaces (13a and 13b). The resin part has a first portion (111) extending in an axial direction of the bearing ring, and a second portion (112) extending in a radial direction of the bearing ring. The first portion covers at least a part of a surface (13e) in the radial direction of the bearing ring of the metal raceway part. The second portion covers at least a part of surfaces (13c and 13d) in the axial direction of the bearing ring of the metal raceway part. The first portion and the second portion are formed of a same carbon fiber-reinforced resin layer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bearing ring, and more particularly to a bearing ring for a vehicle bearing and a method for manufacturing the same.

  Generally, a vehicle bearing called a hub unit includes an outer ring and an inner member as raceways. The outer ring has a cylindrical shape. The inner member is disposed inside the outer ring. On the inner peripheral surface of the outer ring and the outer peripheral surface of the inner member, a raceway surface on which the rolling elements are arranged is formed. At least one of the outer ring and the inner member has a flange that protrudes radially outward from the outer peripheral surface.

  Patent Document 1 discloses a hub unit bearing including an outer ring that is a fixed ring, a hub that is a rotating shaft, and a rolling element that is disposed between the outer ring and the hub. The outer ring is provided with a flange for attaching the suspension device. In Patent Document 1, the raceway surface of the outer ring is formed of a steel material, and the flange is formed of a laminate of carbon fiber prepregs. This carbon fiber prepreg can be formed by, for example, braiding carbon fibers in a flat shape and binding them with a resin.

JP 2011-178314 A

  In Patent Document 1, carbon fiber reinforced resin sheets are laminated to form a part of a race ring. Here, the inventors have found that there is a possibility that the laminated body may be cracked or pulled out by a load in a direction perpendicular to the lamination direction of the laminated body of the carbon fiber reinforced resin. This is considered to occur because the strength against the shearing stress acting in the direction of shifting one layer of the carbon fiber reinforced resin and the other layer is not sufficient.

  Therefore, the present application discloses a structure that easily secures the strength of a bearing ring including a carbon fiber reinforced resin and a method for manufacturing such a bearing ring.

  A bearing ring for a vehicle bearing according to the present disclosure includes a metal raceway portion formed of metal and a resin portion attached to the metal raceway portion and formed of carbon fiber reinforced resin. The metal track portion has a track surface. The resin portion includes a first portion extending in the axial direction of the race and a second portion extending in the radial direction of the race. The first portion covers at least a part of a surface of the metal raceway portion in the radial direction of the raceway. The second portion covers at least a part of the surface of the metal raceway portion in the axial direction of the raceway. The first portion and the second portion are formed of the same carbon fiber reinforced resin layer.

  According to the bearing ring and the manufacturing method according to the present disclosure, it is easy to ensure the strength of the bearing ring including the carbon fiber reinforced resin.

FIG. 1 is a cross-sectional view of the vehicle bearing according to the first embodiment. FIG. 2 is an enlarged cross-sectional view of the outer ring 1 shown in FIG. FIG. 3 is a sectional view showing a modification of the outer ring 1 shown in FIG. FIG. 4 is a cross-sectional view showing another modification of the outer ring shown in FIG. FIG. 5A is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5B is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5C is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5D is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5E is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5F is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5G is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5H is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5I is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 5J is a diagram for explaining an example of a manufacturing process of the outer ring. FIG. 6 is a cross-sectional view of the vehicle bearing according to the second embodiment.

  A bearing ring for a vehicle bearing according to an embodiment includes a metal raceway portion made of metal and a resin portion attached to the metal raceway portion and made of carbon fiber reinforced resin. The metal track portion has a track surface. The resin portion includes a first portion extending in the axial direction of the race and a second portion extending in the radial direction of the race. The first portion covers at least a part of a surface of the metal raceway portion in the radial direction of the raceway. The second portion covers at least a part of the surface of the metal raceway portion in the axial direction of the raceway. The first portion and the second portion are formed of the same carbon fiber reinforced resin layer (first configuration).

  According to the first configuration, the raceway ring includes a metal raceway portion and a resin portion formed of a carbon fiber reinforced resin. For this reason, a raceway ring can be reduced in weight. In the resin portion, the first portion covering the radial surface of the metal track portion and the second portion covering the axial surface of the metal track portion are formed of the same carbon fiber reinforced resin layer. That is, the same carbon fiber reinforced resin layer is disposed over both the radial surface and the axial surface of the metal track portion. As a result, the carbon fiber reinforced resin layer is less likely to slip relative to the metal track. That is, it is possible to ensure the strength against shear stress acting in the direction of shifting the carbon fiber reinforced resin layer. As a result, it becomes easy to ensure the strength of the entire bearing ring including the carbon fiber reinforced resin.

  The first portion is formed to extend from one end portion in the axial direction of the raceway of the metal raceway portion to the other end portion, and the second portion is formed from both axial ends of the first portion. It may be provided so as to extend in the radial direction and cover the surface in the axial direction of the one end portion and the other end portion of the metal track portion (second configuration).

  According to the second configuration, the second portions cover the surfaces of both ends in the axial direction of the metal track portion, and the second portions at both ends are connected to the first portion. That is, the carbon fiber reinforced resin is disposed so as to cover the metal track portion from the radial direction and to be sandwiched from both sides in the axial direction. Thereby, a resin part becomes difficult to shift | deviate to an axial direction with respect to a metal track part. Therefore, the strength of the raceway with respect to the axial load can be further improved.

  The resin portion may include a third portion that extends in a radial direction in contact with the second portion (third configuration).

  According to the 3rd structure, the intensity | strength which stops the resin part from shifting | deviating to an axial direction with respect to a metal track part can be improved by the 3rd part.

  The resin portion may have a radially extending flange, and the third portion may form at least a part of the flange (fourth configuration).

  According to the fourth configuration, a part of the third portion forming the flange is opposed to the axial surface of the metal track portion in the axial direction. Therefore, the flange is less likely to be displaced in the axial direction with respect to the metal track portion.

  The resin portion includes a fourth portion formed on the first portion so as to extend in the axial direction, and a fifth portion extending radially from the fourth portion to form at least a part of the flange. (5th structure).

  According to the fifth configuration, at least a part of the flange is formed by the fifth portion extending in the radial direction from the fourth portion formed on the first portion in which the fixing strength is secured with respect to the metal track portion. . Therefore, the fixing strength with respect to the metal track part of a flange can be improved more.

  In the first part, the carbon fibers of the carbon fiber reinforced resin are arranged in a direction perpendicular to the radial direction of the raceway ring, and in the second part, the carbon fibers of the carbon fiber reinforced resin are arranged in the axial direction of the raceway ring. It may be a configuration arranged in a direction perpendicular to (sixth configuration).

  According to the sixth configuration, the first portion including the carbon fiber in the direction perpendicular to the radial direction is disposed at a position facing the radial surface of the metal track portion, and includes the carbon fiber in the direction perpendicular to the axial direction. The second part can be arranged at a position facing the axial surface of the metal track part. Therefore, the strength of the carbon fiber reinforced resin with respect to both the radial load and the axial load can be further improved.

  The first part and the second part may be in close contact with the surface of the metal track part. Thereby, the fixed strength of a metal track part and a resin part can be improved more.

  A raceway manufacturing method according to an embodiment includes a raceway surface including a raceway surface and a metal raceway portion formed of metal, and a resin portion attached to the metal raceway portion and formed of a carbon fiber reinforced resin. It relates to the manufacturing method. In this manufacturing method, a carbon fiber reinforced resin layer covering at least a part of the surface of the metal raceway portion in the radial direction of the raceway ring and at least a part of the surface of the metal raceway portion in the axial direction of the raceway ring is provided. A step of laminating to form a first laminated body, a position facing the radial surface of the metal track portion across the first stacked body, and the axial surface of the metal track portion and the first surface. A step of arranging a first die at a position facing the laminated body, a first pressurizing step of pressurizing and molding the first laminated body on which the first die is arranged, and the first pressure A step of removing the first mold after the pressing step, and a step of forming a second laminate by laminating a layer of carbon fiber reinforced resin on the first laminate from which the first mold has been removed. , A step of arranging a second mold on the second laminate, and before the second mold is arranged A second pressing step of molding under pressure a second stack, after about the second pressurization step, and a step of removing the second mold.

  According to the manufacturing direction, by placing and pressing the first mold on the first laminate, a layer of carbon fiber reinforced resin that covers both the radial surface and the axial surface of the metal track portion, It can be attached to the metal track. Thereby, the fixed intensity | strength of carbon fiber reinforced resin (1st laminated body) with respect to the metal track part in radial direction and an axial direction is securable. By placing and pressing the second laminate and the second mold on the first laminate attached to the metal track portion, the second laminate can be formed on the basis of the first laminate. As a result, the fixing strength of the carbon fiber reinforced resin of the second laminate can be ensured. Thus, the intensity | strength of carbon fiber reinforced resin is securable by providing the 1st pressurization process of a 1st laminated body, and the 2nd pressurization process of a 2nd laminated body.

  The first mold is a surface that is perpendicular to the axial direction of the bearing ring and overlaps the first portion, or a surface that is perpendicular to the radial direction of the bearing ring and overlaps the second portion. It can be set as the aspect divided | segmented. By arranging the first mold divided in this way and pressurizing the first laminate, both the portion covering the radial surface of the metal track portion of the first laminate and the portion covering the surface in the axial direction It becomes easy to apply force to. That is, an axial force and a radial force are easily applied from the first mold to the first laminate. Therefore, it becomes easy to apply sufficient pressure to form the carbon fiber reinforced resin portion.

<Embodiment>
Hereinafter, embodiments will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same reference numerals, and the same description is not repeated. For convenience of explanation, in each drawing, the configuration may be simplified or schematically illustrated, or a part of the configuration may be omitted.

[Embodiment 1]
(overall structure)
FIG. 1 is a cross-sectional view in a plane passing through the axial center line X of the vehicle bearing 10 according to the first embodiment. In the bearing 10 shown in FIG. 1, A is a side closer to the vehicle body when attached to the vehicle, that is, an end on the inner side in the vehicle width direction, and B is a side farther from the vehicle body when attached to the vehicle, that is, an end outside in the vehicle width direction. Hereinafter, in the bearing 10, a position closer to the vehicle body may be referred to as an inner side in the axial direction, and a position farther from the vehicle body may be referred to as an outer side in the axial direction.

  As shown in FIG. 1, the bearing 10 includes an outer ring 1, an inner member 2, and a plurality of rolling elements 3 and 4. The outer ring 1 and the inner member 2 are race rings of the bearing 10. In the example shown in FIG. 1, the outer ring 1 is a fixed ring, and the inner member 2 is a rotating shaft (rotating wheel) provided on the inner peripheral side of the outer ring. The rolling elements 3 and 4 are disposed between the outer ring 1 and the inner member 2 in a rotatable state.

(Configuration example of outer ring)
The outer ring 1 includes a metal track portion 13 made of metal and a resin portion 11 made of carbon fiber reinforced resin (CFRP). Both the metal track portion 13 and the resin portion 11 have a cylindrical shape. The resin part 11 is provided so as to cover the outer peripheral surface of the metal track part 13. The resin part 11 is fixed to the metal track part 13. The resin part 11 has a flange 12. The flange 12 protrudes outward in the radial direction of the outer ring 1 from the outer peripheral surface of the resin portion 11. A suspension device (not shown) is attached to the flange 12.

  The resin part 11 is attached to the outer peripheral surface of the metal track part 13. That is, the metal track portion 13 is disposed inside the resin portion 11 in the radial direction. A metal track portion 13 is inserted into the resin portion 11. At least a part of the inner peripheral surface of the resin portion 11 is in contact with the outer peripheral surface of the metal track portion 13. The resin part 11 is arranged coaxially with the metal track part 13. On the inner peripheral surface of the metal raceway portion 13, raceway surfaces 13 a and 13 b in contact with the rolling elements 3 and 4 are provided.

  The resin part 11 includes a first part 111 and a second part 112. The first portion 111 covers the surface 13e in the radial direction of the metal track portion 13, that is, the outer peripheral surface 13e. The second portion 112 covers a part of the surfaces 13 c and 13 d in the axial direction of the metal track portion 13. The surfaces 13c and 13d on which the second portion 112 is provided are surfaces that continue from the outer peripheral surface 13e, and are surfaces that are not parallel to the outer peripheral surface 13e. The first portion 111 is in close contact with the outer peripheral surface 13e of the metal track portion 13 and extends in the axial direction. The second portion 112 is in close contact with the axial surfaces 13c and 13d of the metal track portion 13 and extends in the radial direction. The first portion 111 and the second portion 112 are formed of the same carbon fiber reinforced resin layer. That is, the sheet of carbon fiber reinforced resin that forms the first portion 111 is the same as the sheet of carbon fiber reinforced resin that forms the second portion 112. The first portion 111 and the second portion 112 are continuous.

  As a configuration in which the first portion 111 and the second portion 112 are formed of the same carbon fiber reinforced resin layer, for example, at least a part of the carbon fibers of the first portion 111 is connected to the carbon fibers of the second portion 112. It can be set as a structure. Specifically, the carbon fiber reinforced resin layer constituting at least a part of the first portion 111 may be connected to the carbon fiber reinforced resin layer of the second portion 112. That is, it can be configured such that there is at least one sheet of carbon fiber reinforced resin disposed over both the first portion 111 and the second portion 112.

  FIG. 2 is an enlarged cross-sectional view of the outer ring 1 shown in FIG. In FIG. 2, the line inside the resin part 11 represents the layer of carbon fiber reinforced resin. In addition, the layer structure of the resin part 11 shown in FIG. 2 is an example, and the number and shape of the layer of carbon fiber reinforced resin are not restricted to the example shown in FIG.

  In the example shown in FIG. 2, the first portion 111 of the resin portion 11 is formed to extend from one end portion to the other end portion in the axial direction of the metal track portion 13. That is, the first portion 111 is provided so as to cover from one end portion in the axial direction to the other end portion of the outer peripheral surface 13 e of the metal track portion 13. The second portion 112 is formed to extend in the radial direction from both ends in the axial direction of the first portion 111. That is, the second portion 112 is a portion where both ends of the carbon fiber reinforced resin layer forming the first portion 111 are bent and extend in the radial direction. The second portion 112 is provided so as to cover the axial surface 13c at one end of the metal track 13 and the axial surface 13d at the other end.

  In the first portion 111, a plurality of carbon fiber reinforced resin sheets are laminated in the radial direction. In the first portion 111, the carbon fibers of each carbon fiber reinforced resin sheet are arranged in a direction perpendicular to the radial direction. The second portion 112 is a portion obtained by bending the end portion of the carbon fiber reinforced resin sheet of the first portion in the radial direction along the surface of the metal track portion 13. In the second portion 112, a plurality of carbon fiber reinforced resin sheets are laminated in the axial direction. In the second portion 112, the carbon fibers of each carbon fiber reinforced resin sheet are arranged in a direction perpendicular to the axial direction.

  The resin portion 11 includes a third portion 113 that is in contact with a second portion 112 that extends from one end portion (end portion inward in the axial direction) of the first portion 111. The third portion 113 is formed to extend in the radial direction. The surface perpendicular to the axial direction in the vicinity of the radially inner end of the third portion 113 is in contact with the surface perpendicular to the axial direction of the second portion 112. The third portion 113 forms a part of the flange 12. In the third portion 113, a plurality of carbon fiber reinforced resin sheets are laminated in the axial direction. In the third portion 113, the carbon fibers of each carbon fiber reinforced resin sheet are arranged in a direction perpendicular to the axial direction. That is, the second portion 112 and the third portion 113 have the same stacking direction of the carbon fiber reinforced resin layers.

  A fourth portion 114 extending in the axial direction is provided on the outer peripheral surface of the first portion 111. The fourth portion 114 includes a plurality of carbon fiber reinforced resin sheets stacked in the radial direction on the first portion 111. The fourth portion 114 is continuous with the fifth portion 115 extending in the radial direction. The fifth portion 115 forms a part of the flange 12. The fourth portion 114 and the fifth portion 115 are formed of a continuous layer of the same carbon fiber reinforced resin. In the fifth portion 115, a plurality of carbon fiber reinforced resin sheets are laminated in the axial direction.

  A sixth portion 116 extending in the radial direction is provided between the fifth portion 115 and the third portion 113. The sixth portion 116 forms a part of the flange 12. The sixth portion 116 includes a plurality of carbon fiber reinforced resin sheets laminated in the axial direction. The sixth portion 116 can increase the axial thickness of the flange 12.

  The flange 12 further includes an eighth portion 118 that contacts the third portion 113 and extends in the radial direction. The eighth portion 118 is in contact with the axially outer surface of the third portion 113. The eighth portion 118 includes a plurality of carbon fiber reinforced resin sheets laminated in the axial direction. A seventh portion 117 extends from the radially inner end of the eighth portion 118 outward in the axial direction. The seventh portion 117 and the eighth portion 118 are formed of a continuous layer of the same carbon fiber reinforced fiber.

  In the seventh portion 117, a plurality of carbon fiber reinforced resin layers are laminated in the radial direction. A tenth portion 120 formed of a layer of carbon fiber reinforced resin laminated in the radial direction is provided on the radially inner surface of the seventh portion 117. The tenth portion 120 is in contact with a part of the third portion 113. The seventh portion 117 and the tenth portion 120 form a protruding portion that protrudes outward in the axial direction.

  A ninth portion 119 that extends in the axial direction in contact with the second portion 112 is provided at the axially inner end of the resin portion 11. The ninth portion 119 includes a plurality of carbon fiber reinforced resin layers stacked in the radial direction. A fourth portion 114 is formed to extend on the outer peripheral surface of the ninth portion 119. The fourth portion 114 and the ninth portion 119 form a protruding portion that protrudes inward in the axial direction.

  The carbon fiber reinforced resin forming the resin part 11 is a composite material in which the resin is reinforced with carbon fibers. Examples of the resin used as the base material include thermosetting resins such as epoxy, phenol, and polyimide, and thermoplastic resins such as nylon, polypropylene, and polycarbonate.

  The carbon fiber reinforced resin layer can be formed using, for example, a carbon fiber prepreg. The carbon fiber prepreg is formed by impregnating a resin into a carbon fiber and forming a sheet. The carbon fiber prepreg can be, for example, a carbon fiber prepreg that is arranged in a plane so as to face in one direction and is bound with a resin. Alternatively, the carbon fiber prepreg may be obtained by netting carbon fibers in a planar shape and binding them with a resin.

Although not shown in FIGS. 1 and 2, the flange 12 may have a plurality of fastening holes. In each fastening hole, a fastening member such as a bolt is inserted in order to attach a suspension device (not shown) or the like to the flange 12.
(Configuration example of inward member)

  In the example shown in FIG. 1, the inner member 2 is made of a metal such as steel. The inner member 2 shown in FIG. 1 includes a hub ring 22 and an inner ring 21. The hub wheel 22 includes a raceway portion 211 having a raceway surface 214 and a flange 222. A disc wheel (not shown), a brake disc (not shown), and the like are attached to the flange 222.

  The hub wheel 22 is inserted into the outer ring 1. More specifically, the hub wheel 22 is disposed radially inward of the metal raceway portion 13 of the outer ring 1. The hub wheel 22 is arranged coaxially with the metal track portion 13.

  The raceway portion 211 of the hub wheel 22 has a solid shape and extends in the axial direction of the bearing 10. The inner ring 21 is fixed to the outer peripheral surface of the hub ring 22. The inner ring 21 is disposed at the inner end of the hub ring 22 in the axial direction. The inner ring 21 has an annular shape centered on the shaft of the bearing 10. The inner ring 21 is disposed coaxially with the track portion 211 of the hub ring 22.

  Track surfaces 213 and 214 are provided on the outer peripheral surface of the inner ring 21 and the outer peripheral surface of the track portion 211 of the hub wheel 22, respectively. Each of the raceway surfaces 213 and 214 has an annular shape centered on the axis of the bearing 10. The raceway surface 213 is disposed inward of the raceway surface 214 in the axial direction of the bearing 10. The raceway surfaces 213 and 214 are opposed to the raceway surfaces 13a and 13b of the metal raceway portion 13 of the outer ring 1, respectively.

  The flange 222 protrudes outward in the radial direction of the track portion 211 from the outer peripheral surface of the track portion 211. The flange 222 is located outward from the flange 12 of the outer ring 1 in the axial direction of the bearing 10. The flange 222 has a plurality of fastening holes 223. A fastening member such as a bolt is inserted into each fastening hole 223 in order to attach a disc wheel (not shown), a brake disc (not shown) or the like to the flange 222.

  The plurality of rolling elements 3 and 4 are disposed between the outer ring 1 and the inner member 2. More specifically, the plurality of rolling elements 3 are disposed between a raceway surface 13 a included in the metal raceway portion 13 of the outer ring 1 and a raceway surface 213 included in the inner ring 21. The plurality of rolling elements 4 are disposed between the raceway surface 13 b of the metal raceway portion 13 of the outer ring 1 and the raceway surface 214 of the raceway portion 211 of the hub ring 22.

  The outer ring 1 shown in FIGS. 1 and 2 includes the metal track portion 13 and the resin portion 11 as described above. The outer ring 1 can be reduced in weight by the resin portion 11. On the other hand, the metal track portion 13 having the track surfaces 13a and 13b is made of metal. For this reason, the high surface pressure and wear resistance required for the raceway surfaces 13a and 13b can be secured.

  In the configuration shown in FIGS. 1 and 2, the first portion 111 and the second portion 112 of the resin portion 11 are formed of a continuous carbon fiber reinforced resin sheet. That is, the carbon fiber reinforced resin layer that is in close contact with the metal track portion 13 is bent along the end faces 13 c and 13 d of the metal track portion 13. The bent portion, that is, the second portion 112 is disposed so as to face the end faces 13 c and 13 d of the metal track portion 13. With this configuration, for example, even when the bearing 10 receives an axial load, the resin portion 11 and the metal raceway portion 13 are not easily displaced. That is, the strength of the resin part 11 is improved.

  In the example shown in FIGS. 1 and 2, the first portion 111 is connected to the second portion 112 that covers both ends of the metal track portion 13 in the axial direction. Thereby, the intensity | strength of the resin part 11 is securable with respect to the load of any direction of an axial inner side and an outer side.

  In the second portion 112, the carbon fibers are perpendicular to the axial direction, and in the first portion 111, the carbon fibers are perpendicular to the radial direction. In this configuration, the second portion 112 is subjected to an axial load in a direction perpendicular to the carbon fiber. Here, at least a part of the carbon fibers of the first portion 111 and the second portion 112 are connected. Therefore, the strength of retaining the resin portion 11 from the metal track portion 13 with respect to the axial load is improved.

(Modification 1)
FIG. 3 is a sectional view showing a modification of the outer ring 1 shown in FIG. The configuration shown in FIG. 3 is a configuration obtained by removing the third portion 113 from the configuration shown in FIG. In the example shown in FIG. 3, the flange 12 is disposed between the eighth portion 118 disposed on one side in the axial direction and the fifth portion 115 disposed on the other side in the axial direction. The sixth portion 116 is formed. The eighth portion 118, the fifth portion 115, and the sixth portion 116 are all formed to extend in the radial direction. Specifically, the eighth portion 118, the fifth portion 115, and the sixth portion 116 are formed by laminating sheets of carbon fiber reinforced resin including carbon fibers oriented in a direction perpendicular to the axial direction in the axial direction. Is done.

  The eighth portion 118 is continuous with the seventh portion 117 extending in the axial direction from one side of the flange 12. The fifth portion 115 is continuous with the fourth portion 114 extending in the axial direction from the other side of the flange 12. The sixth portion 116 is not connected to the carbon fiber layer extending in the axial direction. Part of the inner peripheral surface of the fourth portion 114 and the seventh portion 117 is in contact with the first portion 111.

  Thus, even if the third portion 113 is not provided, the strength of the resin portion 11 can be improved by the first portion 111 and the second portion 112.

(Modification 2)
FIG. 4 is a cross-sectional view showing another modification of the outer ring shown in FIG. In the example shown in FIG. 4, the third portions 113c and 113d extending in the radial direction in contact with the second portion 112 are configured to be continuous with the portions 120a, 114, and 119a extending in the axial direction.

  The third portion 113c that contacts the second portion 112 on one side in the axial direction extends in the radial direction to form a part of the flange 12. The third portion 113c is continuous with the tenth portion 120a on the opposite side of the second portion 112 at the radially inner end. Specifically, in the third portion 113c, the carbon fiber reinforced resin sheet extending in the radial direction is bent at the radially inner end and extends in the axial direction. The sheet of carbon fiber reinforced resin extending in the axial direction forms the tenth portion 120a. The third portion 113c and the tenth portion 120a are formed of a continuous sheet of the same carbon fiber reinforced resin. On the outer peripheral surface of the tenth portion 120a connected to the third portion 113c, an enlarged tenth portion 120b is provided by a plurality of carbon fiber reinforced resin layers laminated in the radial direction.

  The third portion 113d in contact with the second portion 112 on the other side in the axial direction is continuous with the fourth portion 114 provided in the first portion 111 and extending in the axial direction, and the ninth portion 119a protruding inward in the axial direction. It is the composition to do. That is, the carbon fiber reinforced resin sheet of the fourth portion 114 provided on the outer peripheral surface of the first portion 111 bends along the second portion 112 at the other end. The bent portion extends in the radial direction to form a third portion 113d. The third portion 113d forms a ninth portion 119a that is further bent and extends in the axial direction at the radially inner end. On the outer peripheral surface of the ninth portion 119a connected to the third portion 113d, an enlarged ninth portion 119b is provided by a plurality of carbon fiber reinforced resin layers stacked in the radial direction.

  As shown in FIG. 4, the strength of the resin portion 11 can be further improved by laminating continuous carbon fiber reinforced resin sheets covering the outer peripheral surfaces of the first portion 111 and the second portion 112.

  In the example shown in FIGS. 2 and 4, the third portions 113 and 113 c are in contact with the axially outer second portion 112. The positions of the third portions 113 and 113c are not limited to this, and the third portions 113 and 113c are in contact with at least one of the second portion 112 on the outer side in the axial direction or the second portion 112 on the inner side in the axial direction. be able to.

(Outer ring manufacturing method)
Hereinafter, a method for manufacturing the outer ring 1 will be described. 5A to 5J are diagrams for explaining an example of a manufacturing process of the outer ring 1 shown in FIGS. 1 and 2. As shown in FIG. 5A, first, a metal or cylindrical (annular) metal track portion 13 made of metal such as steel is prepared. Next, as shown in FIG. 5B, a plurality of carbon fiber reinforced resin sheets (examples of a first laminate) are laminated on the outer peripheral surface of the metal track portion 13. Here, as an example, a case where a carbon fiber prepreg is laminated as a carbon fiber reinforced resin sheet will be described. Each carbon fiber prepreg is a layer of resin containing carbon fibers. In each carbon fiber prepreg, the carbon fiber extends in the in-plane direction of each layer.

  In the example shown in FIG. 5B, first, one carbon fiber prepreg is arranged at a position covering the radial surface of the metal track portion 13, that is, the outer peripheral surface 13e and the axial surfaces 13c and 13d. The carbon fiber prepreg is arranged on the outer peripheral surface 13e so that the carbon fiber faces a direction perpendicular to the radial direction. The carbon fiber prepreg is bent vertically at the end portion of the metal track portion 13 in the axial direction, and the surface of the bent carbon fiber prepreg is parallel to the surfaces 13c and 13d perpendicular to the axial direction of the metal track portion 13. It is fixed with. Thereby, a carbon fiber prepreg can be made into the structure which continued in the part which opposes the outer peripheral surface 13e, and the part which opposes the surfaces 13c and 13d of an axial direction.

  A plurality of carbon fiber prepregs are laminated and pasted on the carbon fiber prepreg. Thereby, the carbon fiber prepreg which covers the outer peripheral surface 13e of the metal track part 13 and the surface 13c, 13d of an axial direction is laminated | stacked. The portion of the carbon fiber prepreg that is laminated in the radial direction of the metal track portion 13 corresponds to the first portion 111. A portion stacked in the axial direction corresponds to the second portion 112.

  Next, as shown to FIG. 5C, type | molds 17a-17d (example of a 1st type | mold) according to the shape of the 1st part 111 and the 2nd part 112 are arrange | positioned on the surface of the laminated | stacked carbon fiber prepreg. The molds 17a to 17d are arranged so as to be in contact with at least part of the surface of the carbon fiber prepreg laminate. For example, it can arrange | position so that a type | mold may contact | connect the surface where surface precision (accuracy with respect to the ideal surface on a design) is calculated | required among the surfaces of the laminated body of a carbon fiber prepreg. By applying force from the mold to the carbon fiber prepreg, the carbon fiber prepreg laminate can be molded into a desired shape.

  In the example shown in FIG. 5C, the molds 17 a to 17 d are arranged so as to be in contact with the surfaces of the carbon fiber prepreg forming the first portion 111 and the second portion 112 that are not in contact with the metal track portion 13. The molds 17a to 17d are divided into a plurality of parts. In the example shown in FIG. 5C, the molds 17 a to 17 d are surfaces that are perpendicular to the radial direction of the outer ring 1 and overlap a part of the second portion 112 and surfaces that are perpendicular to the axial direction of the outer ring 1. The first portion 111 is divided by a surface P10 that overlaps a part of the first portion 111.

  Specifically, the mold 17b and the mold 17c are divided by a plane P10 perpendicular to the axial direction. In this manner, the mold 17b that is in contact with the second part 112 on one side (outer side) in the axial direction and the mold 17c that is in contact with the second part 112 on the other side (inward) are provided independently. The force can be applied independently to the second portions 112 on both sides. Therefore, it is easy to sufficiently apply, for example, axial pressure to the second portions 112 on both sides. Thereby, the surface accuracy (for example, cylindricity, roundness, or surface roughness) of the radial surface 111a of the first portion 111 after pressurization and the surface accuracy of the axial surface 112b of the second portion 112 ( For example, surface roughness and the like can be increased.

  Further, the mold 17b and the mold 17a are divided by a plane P11 perpendicular to the radial direction. The mold 17c and the mold 17d are also divided by the surface P11. Accordingly, the molds 17b and 17c for pressing the radially outer surface 111a of the first portion 111 and the molds 17a and 17d for receiving the radially inner surface 112a of the second portion 112 can be provided independently. . Therefore, it becomes easy to sufficiently apply radial pressure to the first portion 111 and the second portion 112. Thereby, the surface precision of the surface 111a of the 1st part 111 and the surface 112a of the 2nd part 112 after pressurization can be improved.

  In the example shown in FIG. 5C, the molds 17 b and 17 c can be divided by a plane including the axis X of the bearing 10. That is, the molds 17b and 17c can be divided in the circumferential direction. Thereby, the surface precision of the 1st part 111 and the 2nd part 112 after pressurization can be improved. For example, by dividing the molds 17b and 17c provided on the radially outer surface 111a of the first portion 111 by a plane including the axis X, the pressure from the radially outer side to the inner side is applied to the carbon fiber prepreg. It becomes easy to join.

  Next, as shown in FIG. 5D, the vacuum bag 33 is attached to the laminate of carbon fiber prepregs on which the molds 17a to 17d are arranged. The metal track portion 13, the laminated carbon fiber prepreg and the molds 17 a to 17 d are sealed in the vacuum back 33. Next, the inside of the vacuum bag 33 including the metal track portion 13, the laminated carbon fiber prepreg, and the molds 17a to 17d is evacuated.

  As shown in FIG. 5E, the vacuum-backed vacuum bag 33 is pressurized and heated by, for example, an autoclave (an example of a first pressurizing step). Here, pressure is applied to the outside of the vacuum bag 33 and heated. Thereby, the laminated body of carbon fiber prepreg can be hardened and the 1st part 111 and the 2nd part 112 can be fabricated. Moreover, the carbon fiber reinforced resin of the 1st part 111 and the 2nd part 112 can be formed integrally. Furthermore, the adhesion degree of the first portion 111 to the metal track portion 13 can be increased. The first portion 111 and the second portion 112 are fixed with respect to the metal track portion 13.

  Here, by arranging the molds 17a to 17d divided by the surface P10 perpendicular to the axial direction and the surface P11 perpendicular to the radial direction and pressurizing the laminate of the carbon fiber prepregs, the outer peripheral surface 13e of the metal track portion 13 is obtained. The force is easily applied to both the portion covering the surface and the portion covering the surfaces 13c and 13d in the axial direction. That is, the axial force and the radial force are easily applied from the molds 17a to 17d to the stacked body. Therefore, it becomes easy to apply sufficient pressure to form the carbon fiber reinforced resin portion.

  Thus, a carbon fiber prepreg is further laminated so as to cover the formed first portion 111 and second portion 112 (described later). In this example, as described above, the molds 17a to 17d for molding the first part 111 and the second part 112 are arranged before the step of further laminating the carbon fiber prepreg on the first part 111 and the second part 112. Pressure is applied. Therefore, the strength of the first portion 111 and the second portion 112 can be ensured more reliably.

  After pressurization, the vacuum bag 33 and the molds 17a to 17d are removed. As a result, an intermediate body of the outer ring 1 having the shape shown in FIG. 5F is obtained. That is, the first portion 111 and the second portion 112 are fixed in close contact with the metal track portion 13.

  Next, as illustrated in FIG. 5G, a carbon fiber prepreg (an example of a second stacked body) is stacked so as to cover the first portion 111 and the second portion 112. Here, a portion corresponding to the flange 12 is also formed by the carbon fiber prepreg. Here, a laminate of carbon fiber prepregs corresponding to the outer shape of the resin part 11 is formed.

  Here, as an example, a carbon fiber prepreg lamination example in the case of forming the resin portion 11 as shown in FIG. 2 will be described. First, a carbon fiber prepreg for forming the fourth portion 114 is laminated on the radially outer surface 111 a of the first portion 111. This carbon fiber prepreg is bent vertically in the middle to form a surface perpendicular to the axial direction. The surface perpendicular to the axial direction is a surface corresponding to the fifth portion 115.

  A carbon fiber prepreg corresponding to the sixth portion 116 and the third portion 133 can be formed by laminating the carbon fiber prepreg in the axial direction with respect to the carbon fiber prepreg corresponding to the fifth portion 115.

  A carbon fiber prepreg having a surface perpendicular to the axial direction corresponding to the eighth portion 118 is attached to the carbon fiber prepreg corresponding to the third portion 133, and bent in the middle to form a surface perpendicular to the axial direction. To do. The plane perpendicular to the axial direction corresponds to the seventh portion 117.

  Further, the carbon fiber prepreg corresponding to the fourth portion 114 is provided so as to protrude inward in the axial direction from the second portion 112. The carbon fiber prepreg corresponding to the ninth portion 119 is laminated on the radially inner surface of the portion protruding inward in the axial direction from the second portion 112 of the carbon fiber prepreg.

  Next, as shown to FIG. 5H, type | molds 7a-7g (example of a 2nd type | mold) according to the shape of the resin part 11 are arrange | positioned on the surface of the laminated | stacked carbon fiber prepreg. A type | mold is arrange | positioned so that at least one part of the surface of the laminated body of carbon fiber prepreg may be touched. For example, it can arrange | position so that a type | mold may contact the surface where surface accuracy is calculated | required among the surfaces of the laminated body of a carbon fiber prepreg. By pressing the carbon fiber prepreg with a mold, the carbon fiber prepreg laminate can be formed into a desired shape.

  In the example shown in FIG. 5H, the molds 7 a to 7 g are arranged in contact with the surface of the carbon fiber prepreg forming the resin portion 11 that is not in contact with the metal track portion 13. The molds 7a to 7g are divided into a plurality of parts. In the example shown in FIG. 5H, the molds 7 a to 7 g are divided by planes P 3, P 4, P 5, P 6 perpendicular to the radial direction of the outer ring 1 and planes P 1, P 2 perpendicular to the axial direction of the outer ring 1. The surfaces P3, P4, P5, and P6 are surfaces that overlap a part of the axial portion 11a that extends in the axial direction of the resin portion 11. The surfaces P1 and P2 are surfaces that overlap a part of the flange 12.

  Specifically, the molds 7a, 7g, and 7f are divided by planes P5 and P6 that are perpendicular to the radial direction of the outer ring 1. The surface P5 is a surface including one surface 11a1 perpendicular to the radial direction of the axial portion 11a. That is, the surface P5 is the same surface as the surface 11a1. The mold is divided at a portion extending in the axial direction from the surface 11a1 of the surface P5. The surface P6 is a surface including the surface 11a2 of the axial portion 11a perpendicular to the radial direction opposite to the surface 11a1. The surface P6 is the same surface as the surface 11a2. The mold is divided at a portion extending in the axial direction from the surface 11a2 of the surface P6.

  Accordingly, the die 7a that pushes one surface 11a1 perpendicular to the radial direction of the axial portion 11a, the die 7g that pushes the surface perpendicular to the axial direction of the axial portion 11a, and the radial direction of the axial portion 11a. The molds 7f for receiving the other surface 11a2 can be provided independently. In the subsequent pressurizing step, the divided molds 7a, 7g, and 7f can appropriately apply pressure from the mold to various surfaces of the axial portion 11a. Therefore, the surface accuracy (for example, cylindricity, roundness, or surface roughness) of the surfaces 11a1 and 11a2 of the axial portion 11a after pressurization can be increased.

  The molds 7c, 7d, and 7e are divided by planes P3 and P4 that are perpendicular to the radial direction of the outer ring 1 in the same manner as the molds 7a, 7g, and 7f.

  The molds 7a, 7b, and 7c are divided by planes P1 and P2 that are perpendicular to the axial direction of the outer ring 1. The plane P1 is a plane including one surface 12a1 perpendicular to the axial direction of the flange 12. That is, the surface P1 is the same surface as the surface 12a1. The mold is divided at a portion extending in the radial direction from the surface 12a1 of the surface P1. The plane P2 is a plane including the surface 12b1 of the flange 12 perpendicular to the axial direction opposite to the surface 12a1. That is, the surface P2 is the same surface as the surface 12b1. The mold is divided at a portion extending in the radial direction from the surface 12b1 of the surface P2.

  Thereby, the die 7a for pushing one surface 12a1 perpendicular to the axial direction of the flange 12, the die 7b for pushing the surface perpendicular to the radial direction of the flange 12, and the other surface 12b1 perpendicular to the axial direction of the flange 12 are pushed. The molds 7c can be provided independently. In the pressurizing step, it is possible to appropriately apply pressure from the mold to various surfaces of the flange 12 by the divided molds 7a, 7b, and 7c. Therefore, the surface accuracy of the surfaces 12a1 and 12b1 of the flange 12 (for example, the perpendicularity to the axis X or the surface roughness) can be increased.

  In the above example, the surface that is the same surface as the surface includes not only the exact same surface but also a surface that is parallel to the surface and that is far from the surface to the extent that it can be considered substantially the same.

  In the example shown in FIG. 5H, the molds 7a, 7b, and 7c are divided on a plane including the axis X of the bearing 10. That is, the molds 7a, 7b, and 7c are divided in the circumferential direction. Thereby, it can make it easy to arrange | position a type | mold to carbon fiber prepreg 7a, 7b, 7c. Moreover, since it is divided | segmented into the circumferential direction, the type | molds 7a, 7b, and 7c can move to radial direction and an axial direction by pressurization. Therefore, a structure in which radial pressure is easily applied to the carbon fiber prepreg from the molds 7a, 7b, and 7c can be obtained.

  The molds 7d, 7e, 7f, and 7g are not divided in the circumferential direction and are formed in a cylindrical shape. That is, the molds 7d, 7e, 7f, and 7g are integrally formed in the circumferential direction. Thereby, the outer peripheral surface of the type | molds 7f and 7e does not move to radial direction at the time of pressurization, but can support the internal peripheral surface 11a2 of the 1st part 11a.

  Next, as shown in FIG. 5I, a vacuum back 33 is attached to the carbon fiber prepreg laminate in which the molds 7 a to 7 g are arranged. The metal track portion 13, the first portion 111, the second portion 112, and the laminated carbon fiber prepreg and the molds 7 a to 7 g are sealed in the vacuum back 33. The inside of the vacuum bag 33 including the metal track portion 13, the first portion 111, the second portion 112, the laminated carbon fiber prepreg and the molds 7a to 7g is evacuated.

  As shown in FIG. 5J, the vacuum-backed vacuum bag 33 is pressurized and heated by, for example, an autoclave. As the vacuum back is evacuated, the molds 7a, 7b, 7c, which are under pressure, move in the radial direction and the axial direction, so that the molds 7a, 7b, 7c press the surfaces of the carbon fiber reinforced resin parts. As a result, each part of the carbon fiber reinforced resin is molded.

  Thereby, the laminated body of carbon fiber prepregs can be hardened and the resin part 11 containing the 1st part 111 and the 2nd part 112 can be shape | molded. Here, a laminated body of carbon fiber prepreg is additionally formed on the first portion 111 and the second portion 112 fixed to the metal track portion 13. Therefore, the strength of the resin part 11 can be ensured.

  After pressurization, the vacuum bag 33 and the molds 7a to 7g are removed. As a result, for example, the outer ring 1 having the shape shown in FIGS. 1 and 2 is obtained.

(Embodiment 2)
Embodiment 1 demonstrated the case where the outer ring | wheel as a bearing ring had the 1st part and 2nd part formed with carbon fiber reinforced resin. On the other hand, it can be set as the structure which has the 1st part and 2nd part in which the inward member as a bearing ring was formed with carbon fiber reinforced resin.

  FIG. 6 is a cross-sectional view of a surface passing through the axis X of the vehicle bearing 20 according to the second embodiment. In the bearing 20 shown in FIG. 6, A is a side closer to the vehicle body when attached to the vehicle, that is, an end on the inner side in the vehicle width direction, and B is a side farther from the vehicle body when attached to the vehicle, that is, an end outside in the vehicle width direction. Hereinafter, in the bearing 20, a position closer to the vehicle body may be referred to as an inner side in the axial direction, and a position farther from the vehicle body may be referred to as an outer side in the axial direction.

  As shown in FIG. 6, the bearing 20 includes an outer ring 1, an inner member 6, and a plurality of rolling elements 3 and 4. The outer ring 1 and the inner member 6 are race rings of the bearing 20. The inner member 6 includes an inner ring 21 having a raceway surface 213 and a hub ring 22 having a raceway surface 214. The inner ring 21 is provided on the outer periphery of the hub ring 22. The inner ring 21 has an annular shape centered on the shaft of the bearing 20. The hub wheel 22 has a cylindrical shape. The hub wheel 22 includes a metal raceway portion 24 having a raceway surface 214 and a resin portion 23 attached to the metal raceway portion 24. The resin portion 23 is fixed to the metal track portion 24. A part of the resin portion 23 forms a flange 222 that protrudes radially outward from the outer peripheral surface of the hub wheel 22.

  The bearing 20 shown in FIG. 6 is different from the first embodiment in that the hub wheel 22 includes a metal raceway portion 24 formed of metal and a resin portion 23 formed of carbon fiber reinforced resin. Thereby, weight reduction can be achieved.

  On the outer peripheral surface of the metal track portion 24, a track surface 214 that is in contact with the rolling element 4 is provided. A part of the outer peripheral surface of the metal track portion 24 is in contact with the inner ring 21.

  The resin part 23 has a first portion 231 and a second portion 232. The first portion 231 covers a part of the surface 24 a in the radial direction of the metal track portion 24, that is, the inner peripheral surface 24 a. The second portion 232 covers the surface 24 b in the axial direction of the metal track portion 24. The first portion 231 is in contact with the inner peripheral surface 24 a of the metal track portion 24 and extends in the axial direction. The second portion 232 extends in the radial direction in contact with the axial surface 24 b of the metal track portion 24.

  The second portion 232 extends in the radial direction to form a flange 222. The first portion 231 and the second portion 232 are continuous. A specific example of the configuration in which the first portion 231 and the second portion 232 are continuous can be the same as the configuration of the first portion 111 and the second portion 112 in the first embodiment. For example, the carbon fiber included in the first portion 231 and the carbon fiber included in the second portion 232 can be configured to be continuous at least in part.

  In the example shown in FIG. 6, a first portion 231 and a second portion 232 are formed by laminating carbon fiber prepregs, which are examples of carbon fiber reinforced fiber sheets. For example, the carbon fiber prepreg is bent along the surfaces 24a and 24b of the metal track portion 24 to laminate the inner member 6 including a surface perpendicular to the axial direction and a surface perpendicular to the radial direction. Can do. Thereby, the 1st part 231 and the 2nd part 232 can be formed in the mutually continuous state.

  In the resin portion 23, the carbon fiber reinforced resin extending in the axial direction formed on the inner periphery of the metal track portion 24 is bent at a right angle at the end in the axial direction and extends in the radial direction to reach the end of the flange 222. . As described above, the first portion 231 that extends in the axial direction in contact with the metal track portion 24 and the second portion 232 that extends in the radial direction and forms the flange 222 are integrally formed, whereby the strength of the flange 222 is increased. Can be secured. Further, when an axial load is applied, the resin portion 23 can be made difficult to shift with respect to the metal track portion 24.

  In the example shown in FIG. 6, the second portion 232 is provided with a protruding portion 233 that protrudes outward in the axial direction. The protrusion 233 has an annular shape centered on the axis X. The protruding portion 233 can be formed by a portion in which a part of the carbon fiber prepreg of the second portion 232 formed to extend in the radial direction is bent at a right angle and extends in the axial direction. That is, the carbon fiber reinforced resin of the protruding portion 233 and a part of the carbon fiber reinforced resin of the second portion 232 can be configured to be continuous. Thereby, the intensity | strength of the protrusion part 233 is securable.

  Moreover, in the example shown in FIG. 6, the flange 222 is formed of carbon fiber reinforced resin. The flange 222 formed of carbon fiber reinforced resin does not rust. Therefore, it is possible to prevent the flange 222 from being fixed to an attachment such as a brake disc or a disc wheel due to rust. The flange 222 includes a second portion 232 formed of the same layer of carbon fiber reinforced resin as the first portion 231 that extends in the axial direction in contact with the inner peripheral surface of the metal track portion 216. Thereby, the intensity | strength with respect to the axial load of the flange 22 is securable.

  Here, in the configuration without the first portion 231, for example, a nut for increasing the thickness of the carbon fiber reinforced resin forming the flange 222 or fixing the carbon fiber reinforced resin in order to ensure the strength of the flange 222. Need to be provided. On the other hand, as shown in FIG. 6, by providing the first portion 231 and the second portion 232 that are continuous with each other, the strength can be ensured without increasing the number of components. Therefore, it is possible to ensure strength while reducing the weight and size of the hub unit.

  Moreover, in the example shown in FIG. 6, the flange 222 is formed of carbon fiber reinforced resin. The flange 222 formed of carbon fiber reinforced resin does not rust. Therefore, it is possible to prevent the flange 222 from being fixed to an attachment such as a brake disc or a disc wheel due to rust. The flange 222 is formed by a second portion 232 that is continuous with the first portion 231 that extends in the axial direction in contact with the inner peripheral surface of the metal track portion 216. Therefore, the strength of the flange 222 can be ensured.

  The first part 231 and the second part 232 of the inner member 6 are arranged on the surface of the carbon fiber prepreg laminated body, and a mold corresponding to the shape of the first part 231 and the second part 232 is arranged and pressed and heated. Can be formed. The steps of pressurization and heating can be performed in the same manner as in the first embodiment. After the pressurization, the hub ring 22 can be formed by removing the mold and press-fitting the first portion 231 into the metal track portion 24.

  Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

  For example, in the above embodiment, the hub wheel 22 of the inner member 2 can be formed in a hollow cylindrical shape.

  In the first embodiment, the second portions 112 are provided on both end surfaces of the metal track portion 13 in the axial direction. On the other hand, the 2nd part 112 may be the structure provided only in any one surface among the both ends of the axial direction of the metal track part 13. FIG.

  In the said Embodiment 1, 2, the radial surface of the metal track parts 13 and 24 in which the 1st part 111 is provided becomes the outer peripheral surface 13e or the inner peripheral surface 24a of the metal track parts 13 and 24. The outer peripheral surface 13e and the inner peripheral surface 24a can be surfaces that are perpendicular to the radial direction, that is, annular surfaces. In this case, the outer peripheral surface 13 or the inner peripheral surface 24a of the metal track portions 13 and 24 may include a portion that is not perpendicular to the radial direction in a part of the annular surface. Further, the surfaces 13c, 13d, 24b in the axial direction of the metal track portions 13, 24 provided with the second portions 112, 232 are not limited to surfaces perpendicular to the axial direction.

  Moreover, in the said Embodiment 1, 2, the outer ring | wheel 1 arrange | positioned at the radial direction outer side of a bearing is a fixed raceway, and the inner members 2 and 6 arrange | positioned at radial direction inner side become a rotary raceway ring. Yes. On the other hand, the outer ring 1 can be a rotating raceway and the inner members 2 and 6 can be fixed raceways.

  In the manufacturing process, the first molds 17a to 17d are divided by a plane P10 perpendicular to the axial direction and a plane P11 perpendicular to the radial direction. On the other hand, the mold may be divided by only one of the surface P10 perpendicular to the axial direction and the surface P11 perpendicular to the radial direction.

  In the above embodiment, the surfaces P1 to P6, P10, and P11 that divide the mold are virtual surfaces. When a mold is divided by a surface, that surface becomes one of the boundary surfaces of the divided mold and the other. For example, a gap between one and the other of the divided molds or one or the other surface is disposed on the surface.

  It should be noted that the surfaces P1 to P6, P10, or P11 (hereinafter referred to as surface P1 or the like) that divide the mold are slightly shifted from the boundary surface of the divided mold, or a part of the boundary surface is separated from the surface P1 or the like. Even if they are separated from each other, it can be considered that they are divided by the plane P1 or the like. For example, as an example of the surface that divides the mold, a surface that is planar as a whole and partially includes unevenness or a curved surface may be included in the surface that divides the mold.

  Moreover, although the said embodiment includes the structure which divides | segments a type | mold by the surface perpendicular | vertical to the axial direction of a track ring, this surface does not need to be a surface strictly perpendicular | vertical to an axial direction. For example, even when the mold is divided by a surface having a slight angle with respect to the axial direction of the race, the mold can be regarded as being divided by a plane perpendicular to the axial direction of the race. it can. Similarly, when a mold is divided on a surface having a slight angle with respect to the radial direction of the race, the mold is regarded as being divided on a plane perpendicular to the radial direction of the race. Can do.

  In the above example, by applying pressure to the carbon fiber prepreg laminate using an autoclave, the strength and shape necessary for a member of the race ring are realized. The pressurization is not limited to auto claim, and for example, pressurization can be performed by a hot press.

1 Outer ring (an example of a race)
2,6 Inner member (example of race ring)
7a to 7f, 17a to 17d Mold 11 Resin portion 111 First portion 112 Second portion 13 Metal track portion 12, 222 Flange

Claims (9)

A bearing ring for a vehicle bearing,
A metal track formed of metal,
A resin part attached to the metal track part and formed of carbon fiber reinforced resin;
The metal track portion has a track surface,
The resin portion has a first portion extending in the axial direction of the bearing ring and a second portion extending in the radial direction of the bearing ring,
The first portion covers at least a part of the surface of the metal raceway portion in the radial direction of the raceway,
The second portion covers at least a part of the surface of the metal raceway portion in the axial direction of the raceway,
The first portion and the second portion are bearing rings for vehicle bearings that are formed of the same carbon fiber reinforced resin layer. The bearing ring according to claim 1,
The first portion is formed to extend from one end portion in the axial direction of the metal track portion to the other end portion,
The second portion extends in a radial direction from both ends in the axial direction of the first portion and is provided so as to cover the axial surface of the one end portion and the other end portion of the metal track portion, respectively. , Race ring. The track ring according to claim 1 or 2,
The said resin part is a bearing ring which has the 3rd part extended in radial direction in contact with the said 2nd part. The track ring according to claim 3,
The resin part has a flange extending in a radial direction,
The third part is a bearing ring that forms at least a part of the flange. The track ring according to any one of claims 1 to 4,
The resin part includes a fourth part formed extending in the axial direction on the first part, and a fifth part extending in the radial direction from the fourth part and forming at least a part of a flange. Race ring. The track ring according to any one of claims 1 to 5,
In the first portion, carbon fibers of the carbon fiber reinforced resin are arranged in a direction perpendicular to the radial direction of the raceway ring,
In the second portion, the raceway ring in which carbon fibers of the carbon fiber reinforced resin are arranged in a direction perpendicular to an axial direction of the raceway ring. The track ring according to any one of claims 1 to 6,
The first part and the second part are track rings in close contact with the surface of the metal track part. A raceway manufacturing method comprising a metal raceway portion having a raceway surface and formed of metal, and a resin portion attached to the metal raceway portion and formed of a carbon fiber reinforced resin,
A layer of carbon fiber reinforced resin that covers at least a part of the surface of the metal raceway portion in the radial direction of the raceway ring and at least a part of the surface of the metal raceway portion in the axial direction of the raceway ring is laminated first. Forming a laminate;
A first mold is located at a position facing the radial surface of the metal track portion across the first laminate and a position facing the axial surface of the metal track portion across the first laminate. A step of arranging
A first pressurizing step of pressurizing and molding the first laminate in which the first mold is disposed;
Removing the first mold after the first pressurizing step;
Forming a second laminate by laminating a layer of carbon fiber reinforced resin on the first laminate from which the first mold has been removed;
Disposing a second mold on the second laminate;
A second pressurizing step of pressurizing and molding the second laminate in which the second mold is disposed;
And a step of removing the second mold after the second pressurizing step. It is a manufacturing method of Claim 8, Comprising:
The first mold is a surface that is perpendicular to the axial direction of the bearing ring and overlaps the first portion, or a surface that is perpendicular to the radial direction of the bearing ring and overlaps the second portion. A method of manufacturing a raceway ring that is divided.

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