JP2021188653A - Bearing device - Google Patents

Abstract

To provide a bearing device which can prevent the intrusion of muddy salt water or the like from a fitting region fit to a slinger member fit to an inside member.SOLUTION: In a bearing device 1 having an outside member 2 and an inside member 5 which relatively coaxially rotate, the inside member is constituted of a hub ring 3 and an inner ring member 4 which is fit to one end part 3c side of the hub ring in an axial direction, the hub ring has a collar-shaped caulking part 34 which is formed while extending to the outside in a radial direction from one end part in the axial direction, and a slinger member 10 having a cylinder fitting part 101 fit to an external peripheral face of the inner ring member, and a circular plate part 102 extending to the outside in the radial direction from one end part 101a of the cylinder fitting part in the axial direction is fit to the external peripheral face 4b of the inner ring member. The caulking part is arranged so as to integrally fix the inner ring member to the hub ring in a state where the caulking part elastically contacts with a seal part 13 which is composed of an elastic member for sealing a clearance between the inner ring member and the cylinder fitting part.SELECTED DRAWING: Figure 2

Description

The present invention relates to a bearing device including an outer member and an inner member that rotate relatively coaxially, and a sealing portion that seals between the outer member and the inner member.

Conventionally, as shown in Patent Document 1 and Patent Document 2 below, one end in the axial direction of a hub ring constituting an inner member is bent outward in the radial direction and the crimping jig is rotated while swinging for crimping. A bearing device that is processed to integrally fix a hub ring and an inner ring member is known.

Japanese Unexamined Patent Publication No. 2004-68890 Japanese Unexamined Patent Publication No. 2019-100505

However, in such a configuration, even if the hub ring and the inner ring member can be integrally fixed by the crimping process, the fitting portion between the slinger member and the inner member fitted to the inner member is moved to the inside of the bearing. It may become an infiltration route for mud salt water and the like.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bearing device capable of preventing infiltration of mud salt water or the like from a fitting portion with a slinger member fitted to an inner member.

In order to achieve the above object, the bearing device of the present invention is a bearing device including an outer member and an inner member that rotate relatively coaxially, and the inner member is a hub ring and one end in the axial direction of the hub ring. The hub ring is composed of an inner ring member fitted to the portion side, and the hub ring has a bearing-shaped crimping portion formed by extending radially outward from one end portion in the axial direction, and is formed by the inner ring member. A slinger member having a cylindrical fitting portion fitted to the outer peripheral surface of the inner ring member and a disk portion extending radially outward from one axial end portion of the cylindrical fitting portion is fitted on the outer peripheral surface. The crimping portion is integrally fixed to the hub ring in a state of being elastically contacted with a sealing portion made of an elastic material that seals between the inner ring member and the cylindrical fitting portion. It is characterized in that it is provided so as to do so.
According to the above configuration, the crimping portion is provided so as to integrally fix the inner ring member to the hub ring in a state of being elastically contacted with the sealing portion made of an elastic material that seals between the inner ring member and the slinger member. There is. Therefore, the sealing property of the fitting portion between the inner ring member and the slinger member is improved, and the infiltration of mud salt water or the like into the bearing device can be prevented.

Since the bearing device of the present invention has the above-described configuration, it is possible to prevent the infiltration of mud salt water or the like from the fitting portion with the slinger member fitted to the inner member.

Is a schematic schematic vertical sectional view showing an example of a bearing device according to an embodiment of the present invention. 1 is a partially enlarged cross-sectional view of part X in FIG. 1, FIG. 1A is a schematic cross-sectional view schematically shown for explaining the first embodiment of the present invention, and FIG. 1B is a modified example of FIG. 1A. It is a schematic cross-sectional view schematically shown for explanation. 1 is a partially enlarged cross-sectional view of part X in FIG. 1, FIG. 1A is a schematic cross-sectional view schematically shown for explaining a second embodiment of the present invention, and FIG. 1B is a modified example of FIG. 1A. It is a schematic cross-sectional view schematically shown for explanation. 1 is a partially enlarged cross-sectional view of part X in FIG. 1, FIG. 1A is a schematic cross-sectional view schematically shown for explaining a third embodiment of the present invention, and FIG. 1B is a modified example of FIG. 1A. It is a schematic cross-sectional view schematically shown for explanation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that some of the figures omit some of the detailed reference numerals attached to the other figures.
The bearing device 1 according to the present embodiment includes an outer member 2 and an inner member 5 that rotate relatively coaxially. The inner member 5 is composed of a hub ring 3 and an inner ring member 4 fitted to one end 3c side in the axial direction of the hub ring 3. The hub ring 3 has a flange-shaped crimping portion 34 formed by extending radially outward from one end portion 3c in the axial direction. On the outer peripheral surface 4b of the inner ring member 4, a cylindrical fitting portion 101 fitted to the outer peripheral surface 4b of the inner ring member 4 and a disk portion extending radially outward from one axial end portion 101a of the cylindrical fitting portion 101. A slinger member 10 having 102 is fitted. The crimping portion 34 is provided so as to integrally fix the inner ring member 4 to the hub ring 3 in a state of being elastically contacted with the sealing portion 13 made of an elastic material that seals between the inner ring member 4 and the cylindrical fitting portion 101. Has been done.
Hereinafter, it will be described in detail.

<First Embodiment>
First, the first embodiment will be described with reference to FIGS. 1 and 2.
The bearing device 1 shown in FIG. 1 supports a wheel (not shown) of an automobile so as to be rotatable around an axis L (axis rotation). This bearing device 1 is a hub bearing, and is generally composed of an outer ring (outer member) 2, a hub ring 3, an inner ring member 4 fitted and integrated on the vehicle body side of the hub ring 3, and an outer ring 2. It is configured to include two rows of rolling elements (balls) 6 ... Intersed between the hub ring 3 and the inner ring member 4. In this example, the hub ring 3 and the inner ring member 4 form the inner ring (inner member) 5. The outer ring 2 is fixed to the vehicle body (not shown) of the automobile. The inner ring 5 is capable of rotating (shaft rotation) around the axis L with respect to the outer ring 2, and a bearing space (annular space) S is formed between the outer ring 2 and the inner ring 5. In the bearing space S, two rows of rolling elements 6 ... can roll the raceway rings 2a of the outer ring 2, the hub wheels 3 and the raceway rings 3a, 4a of the inner ring member 4 while being held by the retainer 6a. It is being mediated. The hub wheel 3 has a cylindrical hub wheel main body 30 and a hub flange 32 formed so as to extend radially outward from the hub wheel main body 30 via a rising base 31, and a bolt 33 is attached to the hub flange 32. And the wheels are mounted and fixed by nuts (not shown). The hub wheel 3 has a flange-shaped crimping portion 34 formed by extending radially outward from one end portion (end portion on the vehicle body side) 3c in the axial direction. The crimping portion 34 is formed by crimping by a crimping jig 7 shown by a two-dot chain line in FIG. In the crimping jig 7, the main body 70 is formed in a columnar shape, and the inclined portion 71 is formed from one end surface 70a of the main body 70. The diameter of the inclined portion 71 is formed to be smaller than the diameter of the main body portion 70. The end portion 72 projecting from the tip of the inclined portion 71 in a columnar shape is formed in a size that can be inserted into the shaft hole 35 of the hub ring 3. After mounting the sealing device 8 described later on the inner ring member 4, such a crimping jig 7 is applied from the vehicle body side of the hub wheel 3, and the crimping jig 7 is swung at an angle α as shown in FIG. While rotating around the axis L, the end portion of the hub ring 3 before the crimping portion 34 is formed becomes the end surface 70a of the main body portion 70 along the inclined surface of the inclined portion 71 of the crimping jig 7. It is guided and bent outward in the radial direction. At this time, a seal portion 13 made of an elastic material (see FIG. 2 (a)) is interposed between the inner ring member 4 and the cylindrical fitting portion 101, and the crimping portion 34 is elastically contacted with the seal portion 13. The inner ring member 4 is provided so as to be integrally fixed to the hub ring 3 in the state. Sealing devices 8 and 9 (bearing seals) are provided at both ends of the bearing space S along the axis L direction between the outer ring 2 and the hub ring 3 and between the outer ring 2 and the inner ring member 4. It is mounted and both ends of the bearing space S along the axis L direction are sealed. This prevents the infiltration of mud salt water and the like into the bearing space S and the leakage of the lubricant (grease and the like) filled in the bearing space S to the outside.
In the following, the side facing the wheel (the side facing the left side in FIG. 1) along the axis L direction is referred to as the wheel side, and the side facing the vehicle body (the side facing the right side) is referred to as the vehicle body side.

FIG. 2A is an enlarged partially enlarged cross-sectional view of the X portion of FIG. 1, and shows a sealing device 8 mounted on the vehicle body side. The sealing device 8 includes a slinger member 10, a core body member 11, and a seal lip portion 12 that is fixed to the core body member 11 and elastically slides into contact with the slinger member 10.

The slinger member 10 is formed by pressing a steel plate such as SPCC or SUS, and has a cylindrical shape having a substantially L-shaped cross section on one side. The slinger member 10 is radially outward from a cylindrical fitting portion 101 fitted (outer fitted) to the outer peripheral surface 4b of the inner ring member 4 and an axial end portion (vehicle body side end portion) 101a of the cylindrical fitting portion 101. It has a disk portion 102 extending to. A seal portion 13 is provided on the outer surface 102b of the disc portion 102 of the slinger member 10. The seal portion 13 has an annular body having a rectangular cross-sectional shape, is made of an elastic material such as a rubber material, and is fixed and integrated to the inner side of the outer surface 102b of the disc portion 102 in the radial direction by vulcanization molding.

The core member 11 is formed by pressing a steel plate such as SPCC or SUS, and has a cylindrical shape having a substantially L-shaped cross section on one side. The core member 11 is radially from the cylindrical fitting portion 111 fitted (innerly fitted) to the inner peripheral surface 2b of the outer ring 2 and the other end portion (wheel side end portion) 111a in the axial direction of the cylindrical fitting portion 111. It has a disk portion 112 extending inward.

The seal lip portion 12 is made of an elastic material such as a rubber material, and is fixed and integrated with the core member 11 via the seal lip base portion 120 by vulcanization molding. The seal lip base 120 wraps around the inner end portion 112b in the radial direction from a part of the inner side surface 112a in the axial direction of the disc portion 112 of the core member 11, and the entire surface of the outer surface 112c in the axial direction of the disc portion 112. Cover. Further, the seal lip base portion 120 covers the entire surface of the radial inner peripheral surface 111b of the cylindrical fitting portion 111, wraps around one axial end portion (vehicle body side end portion) 111c of the cylindrical fitting portion 111, and forms the cylindrical fitting portion 111. It reaches the outer peripheral surface 111d in the radial direction of the above, and is fixed and integrated with the core member 11. The seal lip portion 12 is formed with an annular protrusion 124 that rises outward in the radial direction at a portion extending to the outer peripheral surface 111d of the cylindrical fitting portion 111 of the core member 11. When the core member 11 is internally fitted to the outer ring 2, the annular protrusion 124 is interposed between the inner peripheral surface 2b of the outer ring 2 on the vehicle body side and the outer peripheral surface 111d of the cylindrical fitting portion 111 in a compressed state. It is formed like this. In FIG. 2A, the alternate long and short dash line of the annular protrusion 124 shows the original shape before compression.

A plurality of seal lips 121, 122, 123 extend from the seal lip base 120 to form a plurality of seal lips 121, 122, 123. The seal lip 121 is a seal lip located at the outermost position in the radial direction and arranged at a position closest to the outer space. The seal lip 123 is a seal lip located most radially inward and close to the bearing space S. The seal lip 122 is a seal lip located between the seal lip 121 and the seal lip 123. Of these, the seal lips 121 and 122 are formed by gradually expanding and extending in diameter toward the outside in the axial direction, and are axial lips (sides) that are in sliding contact with the inner side surface 102a in the axial direction of the disk portion 102 of the slinger member 10. Lip). The seal lip 123 is a radial lip that is formed so as to extend inward in the radial direction and is in sliding contact with the inner peripheral surface 101b of the cylindrical fitting portion 101 of the slinger member 10.

The crimping portion 34 of the hub ring 3 in the present embodiment is formed so as to extend so as to have a portion that overlaps the disk portion 102 of the slinger member 10 in the axial direction, and is formed so as to extend from the outer peripheral surface 4b of the inner ring member 4. It has a protruding portion 34b. Then, between the axial inner surface 34a of the crimping portion 34 of the hub ring 3 and the axial outer surface 102b of the disc portion 102 of the slinger member 10, a sealing portion 13 made of elastic rubber, which is an elastic material, is formed. Is provided so as to come into contact with each other. Further, the seal portion 13 is provided so as to be in contact with the outer peripheral surface 4b of the inner ring member 4. As described above, the seal portion 13 is provided so as to have a tightening allowance at a portion surrounded by the inner side surface 34a of the protruding portion 34b, the outer surface 102b of the disk portion 102, and the outer peripheral surface 4b of the inner ring member 4. .. In FIG. 2A, the original shape of the seal portion 13 before deformation is shown by a two-dot chain line. The seal portion 13 is elastically deformed by being sandwiched between the protruding portion 34b of the crimping portion 34, the disc portion 102 of the slinger member 10, and the outer peripheral surface 4b of the inner ring member 4, and the inner side surface 34a of the crimping portion 34. And the outer surface 102b of the disk portion 102 and the outer peripheral surface 4b of the inner ring member 4 are in close contact with each other.

According to the present embodiment, the crimping portion 34 integrally fixes the inner ring member 4 to the hub ring 3 in a state of being elastically contacted with the seal portion 13 that seals between the inner ring member 4 and the slinger member 10. Since it is provided, the sealing property between the outer peripheral surface 4b of the inner ring member 4 having the fitting portion between the inner ring member 4 and the slinger member 10 and the outer peripheral surface 101c of the cylindrical fitting portion 101 of the slinger member 10 is improved. It is possible to prevent the infiltration of mud salt water and the like into the inside of the bearing device 1, that is, the bearing space S. Therefore, it is possible to meet the required performance even in a strict condition test such as a corrosion test in a negative pressure environment. Further, the sealing portion 13 can also seal between the inner side surface 34a of the crimping portion 34 and the outer surface 4c of the inner ring member 4. Further, since the protruding portion 34b of the crimping portion 34 overlaps the disk portion 102 of the slinger member 10 in the axial direction, the fitting portion between the inner ring member 4 and the slinger member 10 is covered with the crimping portion 34. , Invasion of mud salt water, etc. can be blocked even more effectively.

Next, the bearing device 1'in FIG. 2B, which is a modification of the first embodiment, will be described. The parts common to the bearing device 1 of the first embodiment described above are designated by the same reference numerals, and the differences will be mainly described.
The bearing device 1'shown in FIG. 2B has a different configuration of the seal portion 13 from the bearing device 1 of the first embodiment. In this modification, as shown in FIG. 2B, the seal portion 13 is not in contact with the outer peripheral surface 4b of the inner ring member 4 and is not in contact with the outer peripheral surface 4b, but is inside the crimping portion 34 of the hub ring 3. It is provided so as to be in bullet contact between the side surface 34a and the outer surface 102b of the disk portion 102 of the slinger member 10. As described above, even if the seal portion 13 is not in contact with the outer peripheral surface 4b, the same effect as that of the above-described embodiment can be exhibited.

<Second Embodiment>
Next, the bearing device 1A and the bearing device 1A'according to the second embodiment will be described with reference to FIG. The parts common to the bearing device 1 of the first embodiment described above are designated by the same reference numerals, and the differences will be mainly described.
First, FIG. 3A shows the bearing device 1A according to the second embodiment. The crimping portion 34 in the bearing device 1A is not formed so as to extend so as to have a portion that overlaps the disk portion 102 of the slinger member 10 in the axial direction, and protrudes from the outer peripheral surface 4b of the inner ring member 4. Does not have a portion 34b. Further, the bearing device 1A is different from the first embodiment in that a magnetic encoder 14 for rotation detection is integrally provided on the outer surface 102b of the disk portion 102 of the slinger member 10 by vulcanization molding. Further, the seal portion 13 of the bearing device 1A is separately provided inside the magnetic encoder 14 made of magnetic rubber fixed to the disk portion 102 in the radial direction.

The magnetic encoder 14 is made of magnetic rubber containing magnetic powder, and a large number of N poles and S poles are magnetized alternately in the circumferential direction and at equal intervals. Therefore, a magnetic sensor (not shown) is installed on the vehicle body (not shown) so as to face the magnetizing surface 14a of the magnetic encoder 14, and the magnetic sensor and the magnetic encoder 14 form a wheel rotation detection mechanism. Ru.

The seal portion 13 is separately provided inside the magnetic encoder 14 in the radial direction, and its cross-sectional shape is formed in a rectangular annular body extending in the radial direction, and the outer end portion 13b which is the upper end portion of the seal portion 13 is formed. A part of the side is integrally fixed to the outer surface 102b in the axial direction of the disk portion 102 of the slinger member 10. Then, the protruding portion 13c of the sealing portion 13 protruding downward from the cylindrical fitting portion 101 of the slinger member 10 is brought into contact with the inner side surface 34a of the crimping portion 34 and the outer surface 4c of the inner ring member 4. To. Further, in the seal portion 13, some gaps are formed between the inner peripheral surface 13a and the outer peripheral surface 3b of the hub ring 3 and between the inner end portion 14b of the magnetic encoder 14 and the outer end portion 13b of the seal portion 13. It is provided in a state of being. As described above, the crimping portion 34 has a length that does not overlap with the slinger member 10 in the axial direction, extends outward in the radial direction from one axial end portion 3c of the hub ring 3, and is in contact with the seal portion 13. The inner ring member 4 is provided so as to be integrally fixed to the hub ring 3 in the state. The axial outer surface 4c of the inner ring member 4 is provided so as to be located inside the axial outer surface 102b of the disc portion 102 of the slinger member 10 in the axial direction, and is formed by this. A seal portion 13 is arranged between the outer side surface 4c and the inner side surface 34a.

According to the present embodiment, the crimping portion 34 integrally attaches the inner ring member 4 to the hub ring 3 in a state of being elastically contacted with the seal portion 13 made of an elastic material that seals between the inner ring member 4 and the slinger member 10. It is provided so as to be fixed, and the seal portion 13 is provided so as to close between the outer peripheral surface 4b, which is the fitting portion between the inner ring member 4 and the slinger member 10, and the outer peripheral surface 101c of the cylindrical fitting portion 101. Therefore, even if the protruding portion 34b is not provided, the fitting portion can be sealed and the infiltration of mud salt water or the like into the bearing device 1A can be prevented. Further, also in the present embodiment, the outer peripheral surface 3b of the hub ring 3 and the outer surface 4c of the inner ring member 4 can also be sealed by the sealing portion 13. Further, since the sealing portion 13 is separately provided inside the magnetic encoder 14 in the radial direction, the sealing portion 13 can seal the position close to the fitting portion between the inner ring member 4 and the slinger member 10 to improve the sealing performance. can. Further, by being provided separately from the magnetic encoder 14, the degree of freedom in designing the seal portion 13 can be increased.

Next, the bearing device 1A'shown in FIG. 3B, which is a modification of the bearing device 1A of the second embodiment, will be described. The parts common to the bearing devices 1 to 1A described above are designated by the same reference numerals, and the differences will be mainly described.
The bearing device 1A'shown in FIG. 3B has a different configuration of the crimping portion 34 and the sealing portion 13 from the bearing device 1A. In this modification, the crimping portion 34 is formed to extend radially outward so as to overlap the disk portion 102 of the slinger member 10 and the magnetic encoder 14 in the axial direction, and has a protruding portion 34b. As shown in the figure, the crimping portion 34 is crimped so that the inner side surface 34a comes into contact with the axial outer surface 4c of the inner ring member 4 and a part of the magnetized surface 14a of the magnetic encoder 14. The seal portion 13 is formed in a circular annular body in a cross-sectional view, and the seal portion 13 includes an axial outer surface 102b of the disc portion 102 of the slinger member 10 and an inner end portion 14b of the magnetic encoder 14. It is surrounded by the outer peripheral surface 4b of the inner ring member 4 and is provided in contact with each other.

In this modification, the magnetic encoder 14 is interposed between the disc portion 102 and the crimping portion 34, which are the inlets for the mud salt water and the like to enter, and the seal portion 13 is provided on the inner diameter side thereof. It is possible to more effectively block the infiltration of mud salt water and the like, and to improve the sealing performance of the inner ring member 4 and the slinger member 10 to the fitting portion and the outer surface 4c and the crimping portion 34 to the crimping portion. can.

<Third Embodiment>
Next, the bearing device 1B of the third embodiment shown in FIG. 4A and the bearing device 1B'shown in FIG. 4B, which is a modification thereof, will be described. The parts common to the above-mentioned bearing devices 1 to 1A'are designated by the same reference numerals, and the differences will be mainly described.
FIG. 4A shows the bearing device 1B according to the third embodiment. The bearing device 1B differs from the above embodiment in that the seal portion 13 is composed of a magnetic encoder 14 made of magnetic rubber fixed to the disk portion 102. Further, in the inner ring member 4 of the bearing device 1B, the upper corner portion is cut out to form a recess 4d. The magnetic encoder 14 is fixedly integrated to the slinger member 10, and the inner end portion 14b of the magnetic encoder 14 is provided with a gap and the outer peripheral surface 4da of the recess 4d, and the slinger member 10 is cylindrically fitted. It is located in the recess 4d of the inner ring member 4 below the portion 101. That is, since the magnetic encoder 14 in the present embodiment also has the function of the sealing portion 13, the inner side surface 34a of the crimping portion 34, the axial outer surface 4db of the recess 4d of the inner ring member 4, and the slinger. It is formed so as to extend so as to be in contact with the outer surface 102b of the disk portion 102 of the member 10. Further, the crimping portion 34 is formed so as to extend outward in the radial direction so as to overlap the disk portion 102 of the slinger member 10 and the magnetic encoder 14 in the axial direction, and has a protruding portion 34b.

According to the present embodiment, the radial inner portion of the magnetic encoder 14, specifically, the portion that overlaps the crimping portion 34 in the axial direction functions as the seal portion 13, and the seal portion 13 is the inner ring member 4 and the slinger member. Since it is provided so as to close between the outer peripheral surface 4b which is the fitting portion with 10 and the outer peripheral surface 101c of the cylindrical fitting portion 101, the sealing property of the fitting portion is improved and the inside of the bearing device 1B is improved. It is possible to prevent the infiltration of muddy salt water and the like. Further, according to the present embodiment, the outer surface 4c of the inner ring member 4 and the inner side surface 34a of the crimping portion 34 can also be sealed by the seal portion 13. Further, since the seal portion 13 is composed of a magnetic encoder 14 made of magnetic rubber fixed to the slinger member 10, it is not necessary to separately assemble the seal portion 13.

Next, the bearing device 1B'shown in FIG. 3B, which is a modification of the bearing device 1B of the third embodiment, will be described. The parts common to the bearing devices 1 to 1B described above are designated by the same reference numerals, and the differences will be mainly described.
The bearing device 1B'shown in FIG. 4B is different from the bearing device 1B in that the crimping portion 34 has a length that does not overlap with the slinger member 10 in the axial direction. The magnetic encoder 14 that also serves as the seal portion 13 is formed so as to extend radially inward from the cylindrical fitting portion 101 of the slinger member 10, and the magnetic encoder 14 before elastic deformation has an inner end portion 14b in the axial direction. It is provided so as to be inclined outward and in contact with the inner side surface 34a. Further, in this modification, the outer surface 4c in the axial direction of the inner ring member 4 is provided so as to be positioned substantially at the same position in the axial direction as the outer surface 102b in the axial direction of the disk portion 102 of the slinger member 10. The inner ring member 4 of FIG. 4B is not formed with the recess 4d provided in the inner ring member 4 of FIG. 4A.

In this modification, the magnetic encoder 14 is interposed between the disc portion 102 and the crimping portion 34, which are the inlets for the mud salt water and the like to enter, and the inner end portion 14b having the function of the sealing portion 13 is the inner side surface 34a. Since it is provided so as to be firmly in contact with the surface, it is possible to more effectively block the infiltration of mud salt water and the like, and the fitting portion between the inner ring member 4 and the slinger member 10 and the outer surface 4c and the crimping portion 34 are crimped. It is possible to improve the sealing performance to the site.

The bearing devices 1, 1', 1A, 1A', 1B, and 1B' according to the present embodiment may be configured as a bearing device by combining the above-mentioned features of each embodiment and each modification. For example, in the case of the inner ring member 4 having the recess 4d shown in FIG. 4A, the sealing portion 13 as shown in FIG. 2A may be provided in the recess 4d. Further, the bearing device is not limited to the above-mentioned one and the one shown in the drawing. For example, the slinger member 10 and the core member 11 may be made of a hard resin material instead of a steel plate such as SPCC or SUS. Further, the structure and shape of the seal lip portion 12 are not limited to the above-mentioned examples, and are not limited to the rectangular shape or the circular shape as described above, and various shapes such as a cross-sectional mountain shape can be adopted. Further, the configuration of the crimping portion 34 is not limited to the above-mentioned one, and may be appropriately designed. Here, regarding the assembly procedure of the bearing devices 1, 1', 1A, 1A', 1B, 1B' according to the present embodiment, the general assembly procedure of mounting the sealing device after crimping the crimping portion. Unlike this, the crimping process is performed with the sealing device 8 attached to the inner ring member 4 in advance. As a result, the inner ring member 4 can be integrally fixed to the hub ring 3 in a state where the crimping portion 34 is in contact with the seal portion 13. Further, in each of the above-described embodiments, the bearing devices 1, 1', 1A, 1A', 1B, 1B'are mounted on the automobile, but the bearing devices 1, 1', 1A, 1A', 1B, 1B are attached. The one to which the'is attached may be another mechanical device. Further, here, as the sealing device 8, a so-called pack seal type sealing device having a slinger member 10, a core body member 11, and a seal lip portion 12 is shown, but the sealing device 8 is not limited to this, and only the slinger member 10 or the slinger member 10 is shown. It is also applicable to an example in which the slinger member 10 and the magnetic encoder 14 are arranged.

1,1', 1A, 1A', 1B, 1B'Bearing device 2 Outer member (outer ring)
3 Hub wheel 3c Axial one end 30 Hub wheel body 34 Crying part 4 Inner ring member 5 Inner member (inner ring)
8, 9 Sealing device 10 Slinger member 101 Cylindrical fitting 101a Axial one end 102 Disc 12 Seal lip 13 Seal 14 Magnetic encoder

Claims (5)

A bearing device having an outer member and an inner member that rotate relatively coaxially.
The inner member is composed of a hub ring and an inner ring member fitted to one end side in the axial direction of the hub ring.
The hub ring has a flange-shaped crimping portion formed by extending radially outward from one end in the axial direction.
The outer peripheral surface of the inner ring member has a cylindrical fitting portion fitted to the outer peripheral surface of the inner ring member, and a disk portion extending radially outward from one axial end portion of the cylindrical fitting portion. The slinger member is fitted and
The crimping portion is provided so as to integrally fix the inner ring member to the hub ring in a state of being elastically contacted with a sealing portion made of an elastic material that seals between the inner ring member and the cylindrical fitting portion. A bearing device characterized by being In claim 1,
The crimping portion is formed so as to extend so as to overlap the disc portion in the axial direction.
The bearing device is characterized in that the seal portion is provided between the disk portion and the crimping portion. In claim 1 or 2,
The bearing device is characterized in that the seal portion is composed of a magnetic encoder made of magnetic rubber fixed to the disk portion. In claim 1 or 2,
The bearing device is characterized in that the seal portion is separately provided inside the radial direction of a magnetic encoder made of magnetic rubber fixed to the disk portion. In any one of claims 1 to 4,
The slinger member is a bearing characterized in that a seal lip portion for sealing between the outer member and the inner member is slidably contacted to form a part of a sealing device provided between the outer member and the inner member. Device.

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