JP2003013981A - Installing structure of rolling bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installing structure of an axle bearing capable of reducing a knuckle in size by omitting a stop ring for preventing the axle bearing from pulling-out to a vehicle outer side and capable of improving flexibility of its design accordingly. SOLUTION: The installing structure is comprised of a stopper 26 letting a side face of a vehicle inner side A of the knuckle 23 be projected inward in a radial direction, a recessed portion 27 for installation formed in the middle of an inner periphery of the knuckle 23, a recessed portion 28 for engagement formed in the middle of an outer periphery of an outer ring member 2, and a pulling-out preventive member 30 inserted and fitted into the recessed portion 27 for installation and having a slant connection portion 29 shrunk toward the vehicle inner side A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing mounting structure.

[0002]

2. Description of the Related Art Conventionally, there is an axle bearing (rolling bearing) 50 as shown in FIG. This is to install the wheels
A hub wheel 52 rotatable around an axis 51 is provided, and a shaft portion 54 of a constant velocity joint 53 connected to a drive shaft is integrally inserted into the hub wheel 52 by spline fitting.

A bearing 55 for rotatably supporting the hub wheel 52 about the axis 51 is provided, and the bearing 55 includes two rows of inner ring members 56 fitted to the outer peripheral surface of the hub wheel 52. It is provided with two balls 57 (an example of rolling elements) each having an outer peripheral surface of each inner ring member 56 as an inner ring raceway surface, and a single outer ring member 58 whose inner peripheral surface is used as an outer ring raceway surface of these balls 57. The outer ring member 58 is press-fitted into a center hole 60 of a knuckle 59 provided on the vehicle body side.

A mounting structure 61 for mounting the outer ring member 58 (bearing 55) on the knuckle 59 so as to restrict movement of the outer ring member 58 (bearing 55) in the direction of the axis 51 is provided. In order to restrict movement to the vehicle inner side A, an annular stopper 62 formed by radially projecting the vehicle inner side A end surface of the knuckle 59 and the outer ring member 58 moves to the vehicle outer side B. The outer ring member 58 to restrict the knuckle 5
It is composed of a retaining ring 64 which is fitted into a recess 63 formed on the vehicle outer side B of the center hole 60 of the knuckle 59 after being press-fitted into the knuckle 59.

A mounting structure 61 as shown in FIG.
Is proposed. This has an annular stopper 62 formed by radially projecting the end surface of the knuckle 59 on the vehicle inner side A inward in order to restrict the outer ring member 58 from moving to the vehicle inner side A. The mounting structure 61 has the following means for restricting the movement of the outer ring member 58 to the vehicle outer side B. That is, according to this means, a sleeve 67 having a substantially L-shaped cross section, which is composed of a horizontal portion 65 and a bent portion 66, is fitted to a corner portion of the outer ring member 58 on the vehicle outer side B, and the horizontal portion 6 of the sleeve 67 is fitted.
5, elastic pieces 68 are formed at predetermined intervals in the circumferential direction, and grooves 69 with which the elastic pieces 68 are locked are formed at the end portion of the inner peripheral surface of the vehicle outer side B in the center hole 60 of the knuckle 59. .

In such a mounting structure 61, when the outer ring member 58 is inserted into the center hole 60 of the knuckle 59, the elastic piece 68 is pressed by the outer peripheral surface 70 of the end portion of the center hole 60, and the shaft center 5 is formed.
When the outer ring member 58 is inserted in a predetermined position, that is, until the end portion of the outer ring member 58 hits the stopper 62, the elastic piece 68 rises by the elastic force and enters the groove 69, so that the groove The end surface of the elastic piece 68 hits against the wall surface of 69 to engage with each other, whereby the outer ring member 58
Can be prevented from coming out to the vehicle outer side B.

[0007]

By the way, in recent years, the axle bearing 51 has been reduced in size in the direction of the axis 51. However, in the conventional mounting structure 61 shown in FIG.
Since the outer ring member 58 is press-fitted into the knuckle 59, the retaining ring 64 is fitted into the recess 63 formed on the vehicle outer side B of the center hole 60 of the knuckle 59. The length (indicated by α in the figure) is required.

In the conventional mounting structure 61 shown in FIG. 23, the bent portion 66 of the sleeve 67 projects from the end surface of the outer ring member 58 toward the vehicle outer side B by the thickness thereof (β in the figure).
In addition, since the end wall surface 70 of the center hole 60 needs to have a predetermined length in order to collapse the elastic piece 68, the length of the knuckle 59 in the direction of the axial center 51 increases accordingly. There is.

The need to secure the width of the knuckle 59 in the direction of the shaft center 51 for the mounting structure 61 as in the prior art leads to a reduction in the degree of freedom in design.

Therefore, an object of the present invention is to provide a mounting structure for a rolling bearing which can solve the above problems.

[0011]

A means for solving the problems in the present invention is to support a rolling bearing for rotatably supporting a support shaft around an axis through a rolling element arranged inside an outer ring member. In order to insert it through the insertion hole formed in the member, one side of the support member is provided with a retaining piece for abutting against the end of the outer ring member and preventing it from being pulled out in one axial direction. A mounting recess is formed along the circumferential direction of the outer peripheral surface of the insertion hole, and a retaining member supported by the mounting recess is provided, and the base of the retaining member is axially aligned with the mounting recess. Is formed on the outer peripheral surface of the outer ring member, the base portion of the retaining member is formed with an inclined engaging portion having elasticity that inclines so as to reduce in diameter toward one axial direction. It has an engagement surface with which one end of the inclined engagement portion abuts and engages. When the rolling bearing is elastically deformed by being pressed by the outer peripheral surface of the outer ring member while the rolling bearing is press-fitted into the insertion hole from the other side, the inclined engagement portion is avoided. An accommodating recess for accommodating is formed on the outer peripheral surface of the outer ring member.

In the above structure, when the retaining member is mounted in the mounting recess, its base is supported in the axial direction by the supporting portion of the mounting recess, and in this state the rolling bearing is inserted into the insertion hole of the supporting member from the other side. Then, the inclined engaging portion of the retaining member is pressed against the outer peripheral surface of the outer ring member and bends to be stored in the recess for storage, and the rolling bearing is inserted into the insertion hole until the end of the outer ring member abuts the retaining piece. When pushed, the mounting concave portion and the engaging concave portion face each other, the inclined engaging portion of the retaining member enters the engaging concave portion by its elastic force, and one side end portion of the inclined engaging portion engages with the engaging concave portion. The rolling bearings are prevented from being pulled out in one direction in the axial direction by the outer ring member coming into contact with the retaining piece, and the rolling bearings are located at one end of the inclined engaging portion. Part engages with the engaging surface to pull out in the other axial direction. It is prevented from that.

Further, a rolling bearing for rotatably supporting the support shaft around the shaft center through a rolling element disposed inside the outer ring member is inserted through an insertion hole formed in the support member for mounting. On one side of the support member, there is provided a retaining piece for abutting against the end portion of the outer ring member and preventing the outer ring member from being pulled out in one axial direction. Is formed with a mounting recess, and a retaining member supported by the mounting recess is provided.
A support portion that supports the base portion of the retaining member in the axial direction is formed, and an inclined engaging portion having elasticity that is inclined so as to expand toward the other axial direction is formed in the base portion of the retaining member. An engaging recess having an engaging surface with which the other end of the inclined engaging portion abuts and engages is formed on the outer peripheral surface of the insertion hole, and the rolling bearing is inserted from the other side with respect to the insertion hole. When the inclined engagement portion is pressed against the outer peripheral surface of the insertion hole and is elastically deformed during the press-fitting, a storage recess for avoiding the accommodation of the inclined engagement portion is formed on the outer peripheral surface of the insertion hole. .

In the above structure, when the retaining member is mounted in the mounting recess, its base is supported in the axial direction by the supporting portion of the mounting recess, and in this state the rolling bearing is inserted into the insertion hole of the supporting member from the other side. Then, the inclined engaging portion of the retaining member is pressed against the outer peripheral surface of the insertion hole of the mounting member and bends and is stored in the accommodation recess, and the rolling bearing is inserted until the end of the outer ring member abuts the retaining piece. If you push it into the hole,
The mounting concave portion and the engaging concave portion face each other, the inclined engaging portion of the retaining member enters the engaging concave portion by its elastic force, and the other end of the inclined engaging portion abuts the engaging surface of the engaging concave portion. The rolling bearings are prevented from pulling out in one axial direction by the outer ring member coming into contact with the retaining pieces, and the rolling bearing is engaged with the other end portion of the inclined engaging portion. Engagement with the mating face prevents it from being pulled out in the other axial direction.

Further, it is provided with an outer ring member and an inner ring member which is arranged inside the outer ring member and is rotatably supported around the axis through rolling elements and is connected to an axle provided on the vehicle body side. In order to attach the rolling bearing to the support member provided on the vehicle body side, an insertion hole along the axial direction is formed in the support member, and at one side of the support member,
A retaining piece is provided for abutting against the end of the outer ring member to prevent the outer ring member from being pulled out in one axial direction, and a mounting recess is formed along the circumferential direction of the outer peripheral surface of the insertion hole. A retaining member supported by the retaining recess is provided, and a supporting portion that supports the base of the retaining member in the axial direction is formed in the mounting recess, and the base of the retaining member is provided on one side in the axial direction. An inclined engaging portion having elasticity that inclines so as to decrease in diameter is formed, and an outer peripheral surface of the outer ring member has an engaging surface with which one end of the inclined engaging portion abuts and engages. When the rolling bearing is pressed into the insertion hole from the other side and the inclined engagement portion is pressed against the outer peripheral surface of the outer ring member and elastically deforms, the inclined engagement portion is avoided. An accommodating recess for accommodating is formed on the outer peripheral surface of the outer ring member.

In the above structure, when the retaining member is mounted in the mounting recess, its base is supported in the axial direction by the supporting portion of the mounting recess, and in this state the rolling bearing is inserted into the insertion hole of the supporting member from the other side. Then, the inclined engaging portion of the retaining member is pressed against the outer peripheral surface of the outer ring member and bends to be stored in the recess for storage, and the rolling bearing is inserted into the insertion hole until the end of the outer ring member abuts the retaining piece. When pushed, the mounting concave portion and the engaging concave portion face each other, the inclined engaging portion of the retaining member enters the engaging concave portion by its elastic force, and one side end portion of the inclined engaging portion engages with the engaging concave portion. The rolling bearings are prevented from being pulled out in one direction in the axial direction by the outer ring member coming into contact with the retaining piece, and the rolling bearings are located at one end of the inclined engaging portion. Part engages with the engaging surface to pull out in the other axial direction. It is prevented from that.

Further, it is provided with an outer ring member and an inner ring member which is arranged inside the outer ring member and is rotatably supported around the axis through rolling elements and connected to an axle provided on the vehicle body side. In order to attach the rolling bearing to the support member provided on the vehicle body side, an insertion hole along the axial direction is formed in the support member, and one end of the outer ring member is provided on one side of the support member. A retaining piece for abutting against the outer ring member to prevent it from being pulled out in one axial direction, and a mounting recess is formed along the outer peripheral surface circumferential direction of the outer ring member,
A retaining member supported in the mounting recess is provided,
A support portion that supports the base portion of the retaining member in the axial direction is formed in the mounting recess, and the base portion of the retaining member has an elasticity that inclines so that the diameter increases toward the other axial direction. An engaging portion is formed, an engaging recess having an engaging surface with which the other end of the inclined engaging portion abuts and engages is formed on the outer peripheral surface of the insertion hole, and the rolling bearing is inserted. When the inclined engaging portion is pressed against the outer peripheral surface of the insertion hole and elastically deforms while being press-fitted into the hole from the other side, the accommodating recess for accommodating and storing the inclined engaging portion is the outer periphery of the insertion hole. Is formed on the surface.

In the above structure, when the retaining member is mounted in the mounting recess, the base of the retaining member is supported in the axial direction by the supporting portion of the mounting recess. In this state, the rolling bearing is inserted into the insertion hole of the supporting member from the other side. Then, the inclined engaging portion of the retaining member is pressed against the outer peripheral surface of the insertion hole of the mounting member and bends and is stored in the accommodation recess, and the rolling bearing is inserted until the end of the outer ring member abuts the retaining piece. If you push it into the hole,
The mounting concave portion and the engaging concave portion face each other, the inclined engaging portion of the retaining member enters the engaging concave portion by its elastic force, and the other end of the inclined engaging portion abuts the engaging surface of the engaging concave portion. The rolling bearings are prevented from pulling out in one axial direction by the outer ring member coming into contact with the retaining pieces, and the rolling bearing is engaged with the other end portion of the inclined engaging portion. Engagement with the mating face prevents it from being pulled out in the other axial direction.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION A mounting structure for an axle bearing (rolling bearing) according to an embodiment of the present invention will be described below with reference to the drawings. First, a mounting structure according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The axle bearing 1 in this embodiment is
Inside the cylindrical single outer ring member 2, there are two cylindrical inner ring members 5 that are rotatably supported around the axis 4 via two rows of balls 3 (an example of rolling elements), A cage 7 arranged in the annular bearing space 6 between the outer ring member 2 and each inner ring member 5 for holding each ball 3 in a circumferentially equidistant manner, a vehicle inner side A of the annular bearing space 6 and a vehicle. The seal member 8 is arranged at the end of the outer side B to seal the lubricant in the annular bearing space 6 and to prevent muddy water or the like from entering from the outside.

Each inner ring member 5 is provided on the inner ring raceway surface of each ball 3.
Of the outer ring member 2 is used as the outer ring raceway surface of each ball 3.

A body portion of a hub wheel 10 for mounting the brake disc rotor 9 is press-fitted onto the inner peripheral surface of the inner ring member 5, and the vehicle wheel outer side B of this hub wheel 10 is fitted.
By expanding the diameter of the brake disc rotor, a hub flange 11 is formed which abuts on the mounting concave surface 9a of the brake disc rotor 9. The hub flange 11 and the brake disc rotor 9 are fixed by a mounting bolt 12. Reference numeral 13 in the figure
Shows a hub bolt for fixing a tire wheel member (not shown) to the brake disc rotor 9.

The center hole 14 of the hub wheel 10 has a bowl-shaped outer ring portion 1 of a constant velocity joint 15 provided on the vehicle body side.
6, a shaft portion 17 (axle) integrally formed is inserted by spline S fitting, and a nut 18 is screwed to the vehicle outer side B end portion of the shaft portion 17, and the fastening force of the nut 18 causes the shaft portion 17 to rotate. The part 17 and the hub wheel 10 are prevented from separating in the direction of the axis 4.

As the constant velocity joint 15, what is called a Rzeppa type (Burfield type) is used, and the inner ring portion 20 in which the end of the drive shaft 19 is inserted and fixed inside the bowl-shaped outer ring portion 16, A ball 21 for tilting and guiding the hub wheel 10 with respect to the drive shaft 19 and a retainer 22 thereof are provided.

A mounting structure 24 is provided for mounting the above-described axle bearing 1 on a support member (hereinafter referred to as a knuckle) 23 mounted on the vehicle side. A center hole (insertion hole) 25 for inserting the axle bearing 1 is formed in the knuckle 23.

In the mounting structure 24, the bearing 1 for the axle is on the vehicle inner side A (one side in the axial center 4 direction) with respect to the knuckle 23.
In order to prevent the knuckle 23 from moving inwardly toward the vehicle inner side A end surface of the knuckle 23, the annular stopper (retaining piece) 26 is formed so as to project inward in the radial direction. The following means are provided in order to restrict the movement in the axial direction 4 direction (the other side).

That is, this means comprises an annular mounting recess 27 formed along the circumferential direction on the inner peripheral surface of the knuckle 23, that is, on the outer peripheral surface of the center hole 25, and having an opening in the radial direction, and the outer ring. A ring-shaped engaging recess 28 formed at a position facing the mounting recess 27 in the middle of the outer peripheral surface of the member 2 and opening in the radial outside, and fitted to the bottom surface of the mounting recess 27 and directed toward the vehicle inner side A. Retaining member 30 (also referred to as a retainer) having an inclined engaging portion 29 that reduces its diameter by
It consists of and.

The inclined engaging portion 29 of the retaining member 30 is
A plurality of predetermined locations (for example, 30 ° intervals in the circumferential direction) are cut and raised from the annular main body 31 (base of the retaining member 30) at predetermined intervals to form circumferentially equidistant locations. A predetermined elastic force, which will be described later, is applied to the portion 29 by, for example, quenching, and the side wall of the engagement recess 28 on the vehicle inner side A is a surface perpendicular to the axis 4 direction (a surface including a radial direction). This side wall is used as an engaging surface 32 that locks each other when the bent ends of the inclined engaging portion 29 come into contact with each other. By using the wall as the supporting portion, the movement in the direction of the axis 4 is blocked.

The main body 31 is formed in an annular shape as described above, but the main body 31 is cut along the direction of the axial center 4 and the diameter can be reduced or expanded by providing this cut portion. Is formed in.

The mounting recess 27 is formed by the knuckle 2
In the middle of press-fitting the axle shaft bearing 1 from the vehicle outer side B into the center hole 25 of the vehicle 3, the inclined engagement portion 29 of the retaining member 30 is pressed against the vehicle inner side A outer peripheral surface of the outer ring member 2 to elastically elastically move. When it is deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29.

As shown in the figure, the axle bearing 1 (outer ring member 2) is inserted into the center hole 25 of the knuckle 23 and the axle bearing 1
When the vehicle inner side A end of the vehicle is inserted until it abuts on the stopper 26, the vehicle outer side end surfaces 23a and 1a of the knuckle 23 and the axle bearing 1 are in the same plane at positions that coincide with the axis 4 direction. Located in.

In the above structure, the body portion of the hub wheel 10 is press-fitted into the center hole 14 of the axle bearing 1, and the axle bearing 1
And a hub wheel 10 are integrated into a hub unit,
Alternatively, the brake disk rotor 9 is attached to the hub unit.

When the axle bearing 1 in the hub unit described above is press-fitted into the center hole 25 of the knuckle 23 from the vehicle outer side B, the inclined engagement portion 29 of the retaining member 30 is pressed against the outer peripheral surface of the outer ring member 2. It is elastically deformed, and the inclined engagement portion 29 is housed in the housing recess 33 so as to be avoided and maintains this state. Then, by further pushing the axle bearing 1 into the center hole 25 of the knuckle 23, the inclined engagement portion 29 is disengaged from the outer peripheral surface of the outer ring member 2 by its elastic force, and enters the engagement concave portion 28 to be inclined engagement. The end surface of the portion 29 is the engagement surface 32 of the engagement recess 28 (side wall on the vehicle inner side A).
Abut. The engagement force between the end surface of the inclined engagement portion 29 and the engagement surface 32 can prevent the axle bearing 1 (hub unit) from being pulled out to the vehicle outer side B with respect to the knuckle 23.

When the inclined engaging portion 29 enters the engaging concave portion 28 due to its elastic force, it coincides with that the end surface A of the axle bearing 1 on the vehicle inner side abuts on the stopper 26.
Therefore, the axle bearing 1 (hub unit) is not attached to the knuckle 23.
In contrast, the vehicle is prevented from being pulled out to the inner side A.

As described above, when the axle bearing 1 (outer ring member 2) is inserted into the center hole 25 of the knuckle 23 until the vehicle inner side A end of the axle bearing 1 contacts the stopper 26, The vehicle outer side B end surfaces of the knuckle 23 and the axle bearing 1 are located in the same plane in the radial direction so as to coincide with the axis 4 direction.

As described above, according to the first embodiment,
An annular stopper 26 formed by radially projecting the end surface of the knuckle 23 on the vehicle inner side A inward, a mounting recess 27 formed in the inner peripheral surface of the knuckle 23 along the circumferential direction, and an outer ring member 2 Mounting recess 27 in the middle of the outer peripheral surface of
And a retaining member 30 having an engaging concave portion 28 formed at a position facing each other and an inclined engaging portion 29 fitted to a bottom surface of the attaching concave portion 27 and having a diameter reduced toward the vehicle inner side A. Due to the structure 24, the bearing 1 for the axle is the knuckle 2
It is possible to prevent it from being pulled out from 3 in the direction of the axis 4.

Further, as in the conventional mounting structure, since the retaining ring for preventing the axle bearing 1 from being pulled out to the vehicle outer side B can be omitted, the knuckle 23 can be provided for this retaining ring. It is not necessary to increase the width of the knuckle 23, and the vehicle outer side B end surfaces of the knuckle 23 and the axle bearing 1 can be aligned in the axial center 4 direction and positioned in the same radial plane. The size can be reduced, and therefore the degree of freedom in design can be improved.

The predetermined elastic force applied to the above-mentioned inclined engagement portion 29 is to move the axle bearing 1 to the vehicle outer side B when the axle bearing 1 is attached to the vehicle for use. Even when a force is applied, an elastic force is required to maintain the state in which the end surface of the inclined engagement portion 29 abuts and engages with the engagement surface 32 of the engagement recess 28.

Also, for maintenance purposes, the axle bearing 1
When the knuckle 23 is removed from the knuckle 23, the knuckle 23 is pulled out toward the vehicle outer side B against the predetermined elastic force of the inclined engaging portion 29, that is, the engaging force between the inclined engaging portion 29 and the engaging surface 32. At this time, the inclined engaging portion 29 is engaged with the engaging surface 3 of the engaging concave portion 28.
After passing over 2, it is housed in the mounting recess 27 again, and in this state, it is pressed by the outer peripheral surface of the outer ring member 2 to slide.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, an annular mounting recess 27 in the mounting structure 24 is formed on the vehicle outer side B inner peripheral surface of the knuckle 23, and the annular mounting recess 27 is formed on the vehicle inner side A of the mounting recess 27. 33 are coupled. Further, as shown in FIG. 4, a continuous portion between the inclined engaging portion 29 of the retaining member 30 and the main body 31 in the mounting structure 24 is cut out in an arc shape so as to have a thinner wall than other portions to form a fragile portion 34. There is. 4 is a sectional view taken along the center line in FIG.

Further, the engaging recess 28 in the mounting structure 24 is formed in an annular shape by reducing the outer peripheral surface of the outer ring member 2 on the vehicle outer side B. The engaging surface 32, which is the end surface of the engaging recess 28, is an inclined surface whose diameter increases toward the vehicle inner side A. The other structure is the same as that of the first embodiment, and therefore its description is omitted.

In the above structure, prior to press-fitting the axle shaft bearing 1 into the center hole 25 of the knuckle 23, the inclined engagement portion 29 is reduced in diameter toward the vehicle inner side A, and the retaining member is provided. 30 is mounted while holding the reduced diameter in the mounting recess 27, and the retaining member 30 is restored so as to be expanded in diameter by its elastic force and fitted in the mounting recess 27. At this time, both ends of the main body 31 are
It is in a state in which it is supported by the supporting portions which are both side walls of the mounting recess 27 and is prevented from moving in the direction of the axis 4.

Next, when the axle bearing 1 is pushed into the center hole 25 of the knuckle 23 from the vehicle outer side B, the inclined engaging portion 29 is pressed against the outer peripheral surface of the outer ring member 2 and elastically deforms to receive the recessed portion 33 for storage. When the end portion of the outer ring member 2 is in contact with the stopper 26, the inclined engaging portion 29 enters the engaging concave portion 28 by its elastic force, and the end surface of the inclined engaging portion 29 contacts the engaging surface 32. It is brought into contact with and engaged with, and prevents the axle bearing 1 from being pulled out to the vehicle outer side B.

According to the second embodiment of the present invention, the axle bearing 1 is mounted on the vehicle outer side B as in the conventional mounting structure.
It is possible to omit a retaining ring for preventing the knuckle 23 from being pulled out to the outer side of the knuckle 23 and the axle bearing 1 on the vehicle outer side. Since the B end surface can be positioned in the same plane in the radial direction while being aligned with the axial center 4 direction, the knuckle 23 can be downsized, and therefore, the degree of freedom in design can be improved. The other functions and effects are the same as those in the first embodiment described above, and will be omitted.

Also, for maintenance purposes, the axle bearing 1
When removing the knuckle 23 from the knuckle 23, as in the first embodiment, the inclined engaging portion 29 is pulled out to the vehicle outer side B against the predetermined elastic force and destroyed at the fragile portion 34. Alternatively, as shown in FIG. 6, for example, a release ring 35 may be used. That is, the release ring 35 is attached to the knuckle 23 and the outer ring member 2
The tip of the release ring 35 is pushed into the gap between the two until it contacts the inclined engagement portion 29. Subsequently, a press-fitting jig 36 as shown by a virtual line in the figure is inserted from a vehicle outer side B into a press-fitting hole formed in the hub flange 11 in advance, and the press-fitting jig 36 is further pressed by a pressing device (not shown). . Then, when the press-fitting jig 36 is pushed in, the inclined engaging portion 29 is elastically deformed, the end surface of the inclined engaging portion 29 is disengaged from the engaging surface 32, and both engagement states are released. The portion 29 is stored in the storage recess 33. In this way, the axle bearing 1 is pulled out from the knuckle 23 in a state where the end of the inclined engaging portion 29 and the engaging surface 32 are disengaged.

By doing so, the retaining member 3
Without destroying 0, and with a force of the same magnitude as the force of press-fitting the axle bearing 1 into the knuckle 23 and in the opposite direction,
The axle bearing 1 can be removed from the knuckle 23.

In the second embodiment, the mounting structure 2
4, the inclined engagement portion 29 of the retaining member 30 and the main body 31
Although the continuous portion with and is cut out in an arc shape to be thinner than other portions to form the fragile portion 34, as shown in FIG. 7, the inclined engagement portion 29 of the retaining member 30 and the main body 31 are continuous with each other. The portion may be cut out so as to form a step, and the weakened portion 34 may be thinner than other portions.

Next, a third embodiment of the present invention will be described with reference to FIGS. First, the difference between the third embodiment and the second embodiment is the shape of the retaining member 30 and the shape of the mounting recess 27. That is, as shown in FIG.
On the other hand, the inclined engaging portion 29 is formed via the thin fragile portion 34.

The retaining member 30 is formed by forming a trapezoidal cutout groove 30a in the fragile portion 34 and bending the fragile portion 34 at a predetermined angle with respect to the axis 4. The inclined engagement portions 29 are formed on the main body 31 at predetermined intervals at equal intervals on the circumference. The main body 31 is formed in an annular shape, but the main body 31 is cut along the direction of the axis 4 in the middle of the main body 31 and the cut portion is provided so that the diameter can be reduced or expanded.

FIG. 11 shows a state in which the retaining member 30 is mounted in the mounting recess 27, and the mounting recess 27 is the side wall of the mounting recess 27 on the vehicle outer side B so that the end face of the body 31 is securely mounted. A concave portion 27a is formed outward in the radial direction so as to be supported by the supporting portion.

FIG. 12 shows a process of removing the axle bearing 1 from the knuckle 23. By pulling out the axle bearing 1 against the elastic force of the inclined engaging portion 29, the retaining member 30 is cut at the fragile portion 34, the inclined engaging portion 29 is pulled out together with the axle bearing 1, and the main body 31. Is the mounting recess 2
Remain in 7. The main body 31 remaining in the mounting recess 27
Is removed by reducing the diameter with a predetermined tool. When the axle bearing 1 is next mounted on the knuckle 23, a new retaining member 30 is previously provided in the mounting recess 27.
Put on.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the mounting structure 24 according to the fourth embodiment of the present invention, a stopper 26 is formed at the vehicle outer side B end of the knuckle 23 (one side in the axial center 4 direction), and the retaining member 30 has an annular body 31. An inclination formed at the tip of a continuous portion formed by bending the vehicle inner side A (the other side in the axial center 4 direction) of the main body 31 inward in the radial direction so as to reduce the diameter toward the vehicle outer side B. Engagement part 29
It consists of and. Although the main body 31 is formed in an annular shape as described above, the main body 31 is cut in the middle of the main body 31 along the direction of the axis 4, and the cut portion is provided so that the diameter can be reduced or expanded. , The inclined engaging portion 2
9 are formed at predetermined intervals in the circumferential direction of the main body 31.

The mounting recess 27 for mounting the retaining member 30 is formed on the vehicle inner side A inner peripheral surface of the knuckle 23, and the engaging recess 28 covers the vehicle inner side A inner peripheral surface of the outer ring member 2. The engagement surface 32 is formed by processing so as to reduce the diameter as compared with other portions, and the engagement surface 32 is an inclined surface that expands to the vehicle outer side B. In the mounting recess 27, the inclined engagement portion 29 of the retaining member 30 is inserted into the center hole 25 of the knuckle 23 from the vehicle outer side B while the inclined engagement portion 29 of the retaining member 30 is mounted on the vehicle inner side A of the outer ring member 2. It is also used as a housing recess 33 for housing the inclined engagement portion 29 when it is elastically deformed by being pressed by the outer peripheral surface. The configuration of the other parts is the same as that of the first embodiment, and will not be described.

In the above structure, when the axle bearing 1 is mounted on the knuckle 23, the retaining member 30 is mounted in the mounting recess 27 in advance. Then, when the axle bearing 1 is inserted into the center hole 25 of the knuckle 23 from the vehicle inner side A, the inclined engaging portion 29 is pressed against the outer peripheral surface of the outer ring member 2 and is housed in the housing recess 33, and the outer ring member 2 is housed. The inclined engagement portion 29 is provided at a position where the vehicle outer side B end portion abuts the stopper 26.
Engages with the engaging surface 32 of the engaging recess 28, which prevents the axle bearing 1 from moving in the direction of the axis 4.

When the axle bearing 1 is removed from the knuckle 23, the shaft portion 17 formed on the bowl-shaped outer ring portion 16 of the constant velocity joint 15 is removed, the hub wheel 10 is removed, and then the second embodiment is performed. As in the embodiment, the inclined engaging portion 29 of the retaining member 30 is formed by using the release ring 35.
3 or by forcibly pulling out the axle bearing 1 to the vehicle inner side A as shown in FIG. 14, the retaining member 30 and the inclined engaging portion 29 are cut off.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. This has a mounting structure 24 having a stopper 26 formed on the vehicle outer side B of the knuckle 23 in order to prevent the axle bearing 1 from moving to the vehicle outer side B. In order to prevent the stopper 26 from moving to the inner side A,
And an engaging recess 28 formed adjacent to the center hole 25 of the knuckle 23 and formed on the outer peripheral surface of the outer ring member 2 at a position facing the engaging recess 28 with the axle bearing 1 mounted on the knuckle 23. It has a mounting recess 27 and a retaining member 30 mounted in the mounting recess 27.

The retaining member 30 is formed integrally with the ring-shaped main body 31, which is in contact with both side walls as the supporting portion of the mounting recess 27 and is prevented from moving in the direction of the axis 4. It is formed of an annular inclined engagement portion 29 that is inclined so as to increase in diameter toward the vehicle inner side A.

The main body 31 is formed in an annular shape as described above, but it is cut along the direction of the axis 4 in the middle thereof, and the cut portion is provided so that the diameter can be reduced or expanded. There is.

The mounting recess 27 is formed by the knuckle 2
In the middle of press-fitting the axle shaft bearing 1 from the vehicle outer side B into the center hole 25 of the vehicle 3, the inclined engagement portion 29 of the retaining member 30 is pressed against the vehicle inner side A outer peripheral surface of the outer ring member 2 to elastically elastically move. When it is deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29. The configuration of the other parts is the same as that of the first embodiment, and therefore its explanation is omitted.

In the above structure, when the axle bearing (or hub unit) 1 is inserted into the center hole 25 of the knuckle 23 from the vehicle inner side A with the retaining member 30 mounted in the mounting recess 27, the inclined engagement is achieved. Part 29 is knuckle 2
3, the inclined engagement portion 29 slides on the inner peripheral surface of the knuckle 23 while being pushed into the storage concave portion 33 and is being pushed in the axle bearing 1, and the end portion of the axle bearing 1 is When the inclined engaging portion 29 comes into contact with the stopper 26, the inclined engaging portion 29 enters the engaging concave portion 28 due to its elastic force, and the end surface of the inclined engaging portion 29 engages with the engaging surface 32 of the engaging concave portion 28, whereby the axle. It is possible to prevent the bearing 1 for use from moving in the direction of the axis 4.

After that, the hub wheel 10 is press-fitted into the inner ring member 5 of the axle bearing 1 from the vehicle outer side A, the brake disc rotor 9 is attached to the hub flange 11, and the constant velocity joint 15 is fitted in the center hole 14 of the hub wheel 10. The shaft portion 17 is fitted with the spline S from the vehicle inner side A, and is fastened with the nut 18. As a result, the knuckle 23, the axle bearing 1, the hub wheel 10, and the brake disc rotor 9 are integrated.

When the axle bearing 1 is removed from the knuckle 23, the nut 18 is loosened to remove the shaft portion 17 of the constant velocity joint 15, and the hub wheel 10 is attached to the vehicle outer side B.
To force it. Then, the axle bearing 1 is forcibly pulled out toward the vehicle inner side A against the engaging force between the end surface of the inclined engaging portion 29 and the engaging surface 32 of the engaging concave portion 28, and the inclined engaging portion 29 is cut. Thus, the axle bearing 1 is removed from the knuckle 23. Further, a weakened portion may be formed in a continuous portion between the inclined engagement portion 29 and the main body 31, so that the axle bearing 1 can be detached from the knuckle 23 by a predetermined force by forceful pulling.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. This includes a stopper 26 formed on the knuckle 23 in the mounting structure 24 to prevent the axle bearing 1 from moving toward the vehicle inner side A (one side in the axial center 4 direction). The knuckle 23 to prevent the vehicle from moving to the vehicle outer side B.
A mounting recess 27 is formed midway on the inner peripheral surface of the center hole 25 of the center hole 25. When the axle bearing 1 is mounted on the knuckle 23, the engaging recess 28 is formed on the outer peripheral surface of the outer ring member 2 at a position facing the mounting recess 27. As shown in FIG. 18, the retaining member 30 includes an annular main body 31 (base portion) formed to have a reduced diameter on the vehicle inner side A, and a main body 31 formed on an extension of the base portion. It has the same inclination, and is formed in a crown shape with inclined engagement portions 29 formed at predetermined angles in the circumferential direction.

The main body 31 is mounted in an annular groove 27a formed at a corner of the mounting recess 27 on the vehicle outer side B, and the engaging surface 32 of the engaging recess 28 is an inclined surface that expands to the vehicle inner side A. Has been done.

The main body 31 is formed in an annular shape as described above, but the main body 31 is cut along the direction of the axis 4 and the diameter can be reduced or expanded by providing this cut portion. Is formed in.

Further, the mounting recess 27 is provided with the inclined engaging portion 2 of the retaining member 30 while the axle bearing 1 is being pressed into the center hole 25 of the knuckle 23 from the vehicle outer side B.
When 9 is pressed by the outer peripheral surface of the vehicle inner side A of the outer ring member 2 and is elastically deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29. The configuration of the other parts is the same as that of the first embodiment, and will not be described.

In the above structure, when the axle bearing 1 (or hub unit) is inserted into the center hole 25 of the knuckle 23 from the vehicle inner side A, the inclined engagement portion 29 causes the outer ring member 2 to move.
When the axle bearing 1 is pushed in, the inclined engagement portion 29 slides on the outer peripheral surface of the outer ring member 2, and the end portion of the axle bearing 1 is stopped by the stopper 2.
At the time of contact with 6, the inclined engaging portion 29 enters the engaging concave portion 28 due to its elastic force, and the end surface of the inclined engaging portion 29 engages with the engaging surface 32 of the engaging concave portion 28. This prevents the axle bearing 1 from moving to the vehicle outer side B. After that, the constant velocity joint 1 is inserted into the center hole 25 of the hub wheel 10.
The shaft part 17 of 5 is fitted with the spline S, and this is fitted with the nut 18
Tighten with.

When removing the axle bearing 1 from the knuckle 23, the nut 18 is loosened to remove the shaft portion 17 of the constant velocity joint 15, so that the axle bearing 1 is engaged with the end surface of the inclined engaging portion 29 and the engaging recess. When the outer side B of the vehicle is forcibly pulled out against the engaging force of the engagement surface 32 of the engagement portion 28, the end surface of the inclined engagement portion 29 is pushed up along the engagement surface 32 of the engagement recess portion 28 and stored. The inclined engagement portion 29 slides on the outer peripheral surface of the outer ring member 2 while being housed in the vehicle recessed portion 33 and during withdrawal of the axle bearing 1. The axle bearing 1 is detached from the knuckle 23 by forming a fragile portion in a continuous portion between the inclined engagement portion 29 and the main body 31 so that the fragile portion is cut by a predetermined force by forceful pulling. It may be configured as follows.

19 to 21 show another embodiment of the retaining member 30, in which the retaining member 30 is integrally formed with a support 38 for supporting the vehicle speed sensor 37. . In the illustrated example, the main body 31 to the support 3
The neck portion 39 of 8 is bent so that the grip portion 40, that is, the portion to which the vehicle speed sensor 37 is attached is rounded.

In the figure, the stopper 26 is formed on the vehicle inner side A, the mounting recess 27 is formed on the vehicle outer side B of the center hole 25 of the knuckle 23, and the engagement recess 28 is formed on the vehicle outer side of the outer ring member 2. The outer ring member 2 is formed at the B end so as to reduce its diameter. An annular mounting angle 41 is fixed to the outer ring member 2, and a pulsar ring (not shown) is provided at a position of the mounting angle 41 facing the detecting portion of the vehicle speed sensor 37. The shape of the retaining member 30 other than the support 38 is the same as that of the second embodiment, and therefore its description is omitted.

[0071]

As is apparent from the above description, according to the present invention, in order to attach the rolling bearing to the support member, the outer ring member is prevented from being pulled out in one axial direction on one side of the support member. A retaining piece is provided, and a retaining member that is supported in a mounting recess formed along the outer peripheral surface circumferential direction of the insertion hole of the supporting member is provided, and a supporting portion that supports the retaining member in the mounting recess in the axial direction is provided. The retaining member is formed with an inclined engaging portion having elasticity that inclines so as to decrease in diameter in one axial direction, and one end of the inclined engaging portion is engaged with the outer peripheral surface of the outer ring member. When an inclined concave portion is elastically deformed by being pressed by the outer peripheral surface of the outer ring member while forming a concave portion for engagement having an engaging surface for press-fitting the rolling bearing into the insertion hole of the supporting member from the other side, , A storage recess is formed on the outer peripheral surface of the insertion hole for avoiding storage of this inclined engagement portion. Therefore, in the rolling bearing, the outer ring member comes into contact with the retaining piece to prevent the rolling bearing from pulling out in one axial direction, and the rolling bearing has one end of the inclined engaging portion engaged with the engaging surface. By fitting them together, it is possible to prevent them from pulling out in the other axial direction. Therefore, like the conventional mounting structure,
Since the retaining ring for preventing the rolling bearing from pulling out in the axial direction can be omitted, it is not necessary to increase the width of the supporting member for this retaining ring, and the supporting member can be downsized. Therefore, the degree of freedom in design can be improved.

Further, in order to attach the rolling bearing to the support member, a retaining piece is provided on one side of the support member to prevent the outer ring member from being pulled out in one axial direction, and the outer periphery of the outer ring member of the rolling bearing is provided. Form a mounting recess along the circumferential direction,
A retaining member that is supported in the mounting recess is provided, and a support portion that supports the retaining member in the axial direction is formed in the mounting recess so that the retaining member expands in diameter in the other axial direction. An inclined engaging portion having elasticity is formed, and an engaging concave portion having an engaging surface with which the other end of the inclined engaging portion abuts and engages with the outer peripheral surface of the insertion hole of the support member is formed. , For avoiding and housing the inclined engagement portion when the inclined engagement portion is pressed by the inner peripheral surface of the support member and elastically deformed while the rolling bearing is press-fitted into the insertion hole of the support member from the other side Since the storage recess is formed on the outer peripheral surface of the outer ring member, the rolling bearing is
The outer ring member comes into contact with the retaining piece to prevent the outer ring member from being pulled out in one direction in the axial direction, and the rolling bearing has the other end portion of the inclined engaging portion engaged with the engaging surface so that the axial direction is reduced. A retaining ring that prevents the rolling bearing from pulling out to the other side and prevents the rolling bearing from pulling out in the axial direction as in the conventional mounting structure can be omitted. Since it is not necessary to increase the width of the support member, it is possible to reduce the size of the support member and thus improve the degree of freedom in design.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional view of a mounting structure showing a first embodiment of the present invention.

FIG. 2 is a partially enlarged vertical sectional view of the same.

FIG. 3 is a partially enlarged vertical sectional view of a mounting structure showing a second embodiment of the present invention.

FIG. 4 is an enlarged vertical sectional view of the retaining member.

FIG. 5 is a front view of the retaining member.

FIG. 6 is a partially enlarged vertical cross-sectional view showing a process of similarly removing the axle bearing from the knuckle.

FIG. 7 is a vertical cross-sectional view showing another embodiment of the retaining member.

FIG. 8 is a vertical sectional view of a retaining member according to a third embodiment of the present invention.

FIG. 9 is a front view of the retaining member.

FIG. 10 is an enlarged vertical cross-sectional view of the main part of the retaining member.

FIG. 11 is an enlarged longitudinal sectional view of an essential part in a state where the retaining member is also mounted in the mounting recess.

FIG. 12 is a partially enlarged vertical sectional view showing a process of removing the axle bearing from the knuckle.

FIG. 13 is a partially enlarged vertical sectional view of a mounting structure showing a fourth embodiment of the present invention.

FIG. 14 is a partially enlarged vertical cross-sectional view showing a process of similarly removing the axle bearing from the knuckle.

FIG. 15 is a partially enlarged vertical sectional view of a mounting structure showing a fifth embodiment of the present invention.

FIG. 16 is a partially enlarged vertical cross-sectional view showing a process of similarly removing the axle bearing from the knuckle.

FIG. 17 is a partially enlarged vertical sectional view of a mounting structure showing a sixth embodiment of the present invention.

FIG. 18 is a partially enlarged vertical sectional view showing a state where a retaining member is mounted in the mounting recess.

FIG. 19 is a partially enlarged vertical sectional view of a mounting structure showing another embodiment.

FIG. 20 is a front view of a single unit of the retaining member before processing.

FIG. 21 is a perspective view of a single unit of the retaining member after processing.

FIG. 22 is an overall cross-sectional view of a mounting structure for an axle bearing showing a conventional example.

FIG. 23 is a partially enlarged vertical sectional view of an attachment structure for an axle bearing showing another conventional example.

[Explanation of symbols]

Bearing for 1 axle 2 Outer ring member 4 axis 5 Inner ring member 9 Brake disc rotor 10 hub wheels 14 Hub wheel center hole 15 constant velocity joint 23 Knuckles 24 Mounting structure 25 knuckle center hole 26 Stopper 27 Mounting recess 28 Engagement recess 29 Inclined engaging part 30 retaining member 32 engagement surface 33 Storage recess A vehicle inner side B vehicle outer side

Continued front page    (72) Inventor Nobuyuki Seo             3-5-8 Minamisenba, Chuo-ku, Osaka Koyo             Within Seiko Co., Ltd. (72) Inventor Hiromi Kawanishi             3-5-8 Minamisenba, Chuo-ku, Osaka Koyo             Within Seiko Co., Ltd. F-term (reference) 3J017 AA01 BA10 CA04 CA06 DA01                       DB04 DB06 DB07

Claims (4)

[Claims] 1. A rolling bearing for supporting a support shaft rotatably around an axis through a rolling element arranged inside an outer ring member, for inserting the rolling bearing into an insertion hole formed in the supporting member. In the mounting structure of the above, a retaining piece is provided on one side of the supporting member to prevent the outer ring member from coming out of the outer ring member in one axial direction, and the outer periphery of the insertion hole. A mounting recess is formed along the circumferential direction, and a retaining member supported by the mounting recess is provided, and a supporting portion that supports the base of the retaining member in the axial direction is formed in the mounting recess. An inclined engaging portion having elasticity that inclines so as to reduce in diameter toward one axial direction is formed at the base of the retaining member, and one of the inclined engaging portions is formed on the outer peripheral surface of the outer ring member. An engagement recess having an engagement surface with which the side end portion abuts and engages is formed, While the rolling bearing is press-fitted into the insertion hole from the other side, when the inclined engagement portion is pressed against the outer peripheral surface of the outer ring member and elastically deforms, the accommodation recess for accommodating and storing the inclined engagement portion is provided. A mounting structure for a rolling bearing, wherein the mounting structure is formed on the outer peripheral surface of the outer ring member. 2. A rolling bearing for supporting a support shaft rotatably around an axis through a rolling element arranged inside the outer ring member, for inserting the rolling bearing into an insertion hole formed in the supporting member. In the mounting structure of the above, a retaining piece is provided on one side of the support member to prevent the outer ring member from coming out in one axial direction by coming into contact with the end portion of the outer ring member. A mounting recess is formed along the circumferential direction, and a retaining member supported by the mounting recess is provided, and a supporting portion that supports the base of the retaining member in the axial direction is formed in the mounting recess. And an inclined engaging portion having elasticity that inclines so as to expand toward the other side in the axial direction, is formed on the base portion of the retaining member, and the inclined engaging portion is provided on the outer peripheral surface of the insertion hole. An engagement recess having an engagement surface with which the side end portion abuts and engages is formed, When the inclined engagement portion is pressed against the outer peripheral surface of the insertion hole and elastically deforms while the rolling bearing is press-fitted into the insertion hole from the other side, a storage recess for avoiding and storing the inclined engagement portion is provided. A rolling bearing mounting structure, characterized in that it is formed on an outer peripheral surface of the insertion hole. 3. An outer ring member, and an inner ring member that is arranged inside the outer ring member and is rotatably supported around a shaft center via rolling elements and is connected to an axle provided on the vehicle body side. A rolling bearing is a mounting structure for mounting to a support member provided on the vehicle body side, wherein an insertion hole along the axial direction is formed in the support member, and at one side of the support member, A retaining piece is provided for abutting against the end of the outer ring member to prevent the outer ring member from being pulled out in one axial direction, and a mounting recess is formed along the outer peripheral surface circumferential direction of the insertion hole. A retaining member supported by the retaining recess is provided, and a supporting portion that supports the base of the retaining member in the axial direction is formed in the mounting recess, and the base of the retaining member is provided on one side in the axial direction. Inclined engagement with elasticity that inclines so that the diameter decreases Is formed, on the outer peripheral surface of the outer ring member, an engaging recess having an engaging surface with which one end of the inclined engaging portion abuts and engages is formed, and the rolling bearing is inserted into the insertion hole. When the inclined engagement portion is pressed against the outer peripheral surface of the outer ring member and elastically deforms while being press-fitted from the other side, a storage recess for avoiding and storing the inclined engagement portion is formed on the outer peripheral surface of the outer ring member. A rolling bearing mounting structure, characterized by being formed. 4. An outer ring member, and an inner ring member which is arranged inside the outer ring member and is rotatably supported around a shaft center via rolling elements and is connected to an axle provided on the vehicle body side. A rolling bearing is a mounting structure for mounting to a support member provided on the vehicle body side, wherein an insertion hole along the axial direction is formed in the support member, and at one side of the support member, A retaining piece is provided for abutting against the end portion of the outer ring member to prevent the outer ring member from being pulled out in one axial direction, and a mounting recess is formed along the outer peripheral surface circumferential direction of the outer ring member. A retaining member that is supported by the retaining recess is provided, and a support portion that supports the base of the retaining member in the axial direction is formed in the mounting recess, and the base of the retaining member is in the other axial direction. Inclining member having elasticity that inclines so that the diameter increases toward Is formed, an engaging recess having an engaging surface with which the other end of the inclined engaging portion abuts and engages is formed on the outer peripheral surface of the insertion hole, and the rolling bearing is inserted into the insertion hole. On the other hand, when the inclined engagement portion is pressed against the outer peripheral surface of the insertion hole and elastically deforms while being press-fitted from the other side, a storage concave portion for accommodating and storing the inclined engagement portion is formed on the outer peripheral surface of the insertion hole. The rolling bearing mounting structure is characterized by being formed.