JP2003130073A - Rotation support device for wheels - Google Patents

Abstract

(57) [Summary] [Problem] A knuckle 34 that can reduce unsprung load.
b. A structure that can be easily removed from b. SOLUTION: An outer ring 4c constituting a wheel supporting rolling bearing unit 1c is provided in a support hole 3 provided in the knuck 34b.
7b is fixedly connected with the engaging member 44. In this state,
A bent portion 47 provided at a circumferential end of the engagement member 44
Is positioned in a concave portion 48 provided on the inner peripheral surface of the support hole 37b. When removing the wheel supporting rolling bearing unit 1c from the knuckle 34b, the bent portion 4
7. Fix the jig. Then, the engaging member 44 is wound up in the concave portion 48 by the jig, whereby the engaging member 44 is pulled out from both the inner diameter side and the outer diameter side engagement grooves 39a and 40b. As a result, the wheel supporting rolling bearing unit 1b can be easily removed from the knuckle 34a.

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention
The lifting device makes the wheels freely rotatable relative to the vehicle suspension.
Use to support. [0002] Wheels are supported rotatably with respect to a suspension system.
The outer ring and the inner ring in a rotatable manner via rolling elements.
Various types of rolling bearing units for wheel support combined
Have been. In addition, drive wheels for independent suspension
A wheel support for supporting and rotating this drive wheel
The rolling bearing unit is combined with a constant velocity joint.
The relative displacement between the differential gear and the drive wheels and the vehicle
Regardless of the steering angle given to the wheels, the rotation of the drive shaft
Must be transmitted smoothly (with constant speed) to
You. FIG. 8 shows a rolling bearing unit for supporting wheels for such a purpose.
A general combination of a unit 1 and a constant velocity joint 2
The wheel drive bearing unit 3 is shown. [0003] Of these, rolling bearing units for supporting wheels
Reference numeral 1 denotes a rotating member described in claims on the inner diameter side of the outer ring 4.
A certain hub 5 and inner ring 6 are connected via a plurality of rolling elements 7
And rotatably supported. Outer ring 4 is the outer circumference
By the first flange 8 provided on the surface, it was described in the claim
Knuckle 34 (a rear member) constituting a suspension device,
(See Fig. 9 to be described later).
Do not turn. Also, on the inner peripheral surface of the outer ring 4, a double row outer ring gauge
Roads 10 and 10 are provided, and the hub is provided on the inner diameter side of the outer ring 4.
5 and inner ring 6 are rotatably supported concentrically with the outer ring 4
are doing. [0004] Of these, the hub 5 is located at the outer end of the outer peripheral surface ｛automatically.
At the end on the outside in the width direction of the vehicle when assembled to the car,
Except for 4 (B), 5, and 6
The second flange for supporting the wheel, which is the flange described in paragraph
Is provided. Also, the outer peripheral surface of the hub 5
A first inner raceway 12 is formed in the middle of the
な る In the center of the vehicle in the width direction when assembled to the car
4 (B), formed at the right end of each figure except for 5 and 6
The small-diameter step portion 13 has a second inner raceway 14 on its outer peripheral surface.
The inner ring 6 formed with the above is externally fitted and fixed. In addition,
A spline hole 15 is provided at the center of the
The tube 5 is formed in a hollow cylindrical shape. On the other hand, the constant velocity joint 2 is
The outer ring 16 for the int, the inner ring 17 for the constant velocity joint,
And a plyne shaft 18. Constant velocity joint
The outer race 16 and the spline shaft 18 form a driving member 19.
To achieve. That is, the spline shaft 18 is
9 and is engaged with the spline hole 15.
The outer ring 16 for the constant velocity joint is driven freely.
It is provided at the inner end of the member 19. This constant velocity join
Outer engagement at a plurality of locations in the circumferential direction on the inner peripheral surface of the outer ring 16
Grooves 20, 20 are each oriented at right angles to this circumferential direction.
Is formed. Also, the inner ring 17 for the constant velocity joint is used.
Has a second spline hole 21 in the center and an outer peripheral surface
Inner engagement at a portion matching the outer engagement grooves 20, 20
The grooves 22, 22 are each formed at right angles to the circumferential direction.
Has formed. [0006] Each of these inner engagement grooves 22, 22
The balls 23, 23 are provided between the outer engagement grooves 20, 20.
Are held by the retainer 24, and each of these engagement grooves is
Rolls 22 and 20 are provided so as to freely roll. Above constant velocity jo
A part of the inner peripheral surface of the outer ring 16 for int
The portion between the outer engagement grooves 20, 20
Surfaces 25 and 25 are provided. Each of these cage guide surfaces 25,
Reference numeral 25 designates the center of displacement of the constant velocity joint 2 as its center.
Are located on a single spherical surface. In addition, such a constant velocity joy
The shape of each part of the component 2
Type or Barfield type constant velocity joint
Is not related to the gist of the present invention.
Is omitted. The constant velocity joint 2 as described above and the constant velocity joint 2 as described above
For combining with the wheel supporting rolling bearing unit 1
The spline shaft 18 is connected to a spline hole of the hub 5.
15 is inserted from inside to outside. And the above
Projecting from the outer end surface of the hub 5 at the outer end of the plunging shaft 18
The nut 27 is screwed into the male screw part 26 provided on the part
By further tightening, they are connected and fixed to each other. This state
The inner end face of the inner ring 6 is the outer ring 1 for a constant velocity joint.
6 comes into contact with the outer end surface of the inner ring 6 so that the inner ring 6 is
There is no displacement in the direction of exiting from 13. At the same time, before
An appropriate preload is applied to each of the rolling elements 7,7. [0008] Further, the state of assembly to the suspension system of the automobile
In the above, it is provided at the center of the inner ring 17 for the constant velocity joint.
In the second spline hole 21, provided at the outer end of the drive shaft 28
The male spline portion 29 is engaged with the spline. Soshi
The outer peripheral surface of the male spline portion 29 extends over the entire circumference.
The retaining ring 31 locked in the locking groove 30 formed by
A hook formed on the outer peripheral edge of the outer end of the second spline hole 21
The male spline portion 29 is engaged with the stop
The second spline hole 21 is prevented from falling out.
The inner end of the drive shaft 28 is a differential gear.
Of the tripod type constant velocity joint provided on the output shaft
Connect and fix to the center of the runion. By the way, the conventional structure shown in FIG.
In the case of the first example, the rolling bearing unit 1 for supporting wheels is configured.
The outer ring 4 to be used is attached to the knuckle constituting the suspension device,
Connect and fix with bolts not shown. That is, the outer ring 4
The first flange 8 provided on the outer peripheral surface of the
A plurality of mounting holes 33 are passed through the
Then, screw the bolts into these mounting holes 33 and tighten them.
To fix the outer ring 4 to the knuckle.
You. However, the outer ring 4 is connected and fixed with bolts like this.
If you do, these bolts and the first flange 8
The number of parts and the number of machining steps correspond to the number of mounting holes 33 provided
Increase in production cost and weight are unavoidable.
No. When the weight increases in this way, the so-called unsprung load increases.
As a result, the running performance of the automobile is deteriorated, which is not preferable. On the other hand, Japanese Patent Application Laid-Open No. 2001-10580
No. 6 discloses a wheel drive bearing unit as shown in FIG.
3a, a rolling bearing unit 1a for supporting wheels
To the knuckle 34 that constitutes the suspension device
A rotating support device for wheels fixedly connected by wheels 35 is described.
Have been. That is, in the case of the conventional structure shown in FIG.
A male serration 36 is provided on the outer peripheral surface of the outer ring 4a.
Female serration on the inner peripheral surface of the support hole 37 provided in the
38 are formed respectively. In addition, outside the outer ring 4a
An inner diameter side engaging groove 39 is formed in the middle of the peripheral surface,
It is provided over the entire circumference in a state of being recessed inward and
The inner peripheral surface of the support hole 37 is aligned with the inner diameter side engagement groove 39.
The outer diameter side engaging groove 40 is formed at a portion
It is provided over the entire circumference so as to be recessed in the direction. The outer peripheral surface of the outer race 4a and the support hole 3
7 in serration engagement with the inner peripheral surface of
These two engagement grooves 3 are inserted into both the radial side and the outer diameter side engagement grooves 39 and 40.
Attach the retaining ring 35 in the state of being bridged between
The wheel 4a is prevented from coming out of the knuckle 34.
You. In the case of the second example of such a conventional structure, the outer ring 4 is used.
a is removed from the knuckle 34 by the retaining ring 35.
8 and the first example shown in FIG.
One flange 8 and nuts can be omitted. this
As a result, the number of parts and machining
The manufacturing cost can be reduced by reducing the number of steps. FIG. 10 also shows a retaining ring 35a.
Second example of structure for fixing outer ring 4b to knuckle 34a
As described in US Pat. No. 5,927,867.
1 shows a rotating support device for a wheel. Times for this wheel
Rolling bearing unit 1 for wheel support constituting a rolling support device
b is the outer end of the support hole 37a provided in the knuckle 34a.
An outer diameter side engaging groove 40a formed on the inner circumferential surface of the outer ring 4;
b with the retaining ring 35a wound around the outer end face of the
By attaching it, it is connected and fixed to the knuckle 34a.
You. That is, the support hole 37a is provided at the inner end of the support hole 37a.
a flange provided so as to protrude radially inward from the inner peripheral surface of a
41, the inner end surface of the outer ring 4b is brought into contact with the axially outer surface.
And the inward bending formed on the retaining ring 35a.
The portion 42 is engaged (contacted) with the outer end surface of the outer ring 4b.
You. Also, the outer fold formed on this retaining ring 35a together with this
The bent portion 43 is engaged with the outer diameter side engagement groove 40a.
I have. Then, the outer ring 4b is moved outside the flange 41 in this manner.
Surface and the retaining ring 35a, the nut
Axial displacement of the outer ring 4b with respect to the vehicle 34a.
ing. FIG. 9 is a block diagram showing the configuration of the embodiment shown in FIG.
The second example of the conventional structure and the conventional structure shown in FIG.
In the case of the third example of the structure, compared to the case of the first example shown in FIG.
To reduce unsprung load and production cost
You. However, the knuckles 34, 34 constituting the suspension device
a Roller bearing units 1a and 1b for wheel support
After beaming, the wheel supporting rolling bearing units 1a, 1b
Consider removing the knuckles 34 and 34a
Not in. That is, the wheel supporting rolling bearing unit 1
a, 1b for repair and replacement.
The knuckles 34, 34 are attached to the ball bearing units 1a, 1b.
When removing from the knuckle 34, 34a
Outer diameter side engaging groove 4 provided in the inner peripheral surface of the support hole 37, 37a.
0, 40a and the inner diameter side engaging groove 3 provided on the outer peripheral surface of the outer ring 4a.
9, the retaining rings 35, 35a cannot be removed.
For this reason, forcibly with the retaining rings 35, 35a attached
In addition, the outer ring 4 is formed by a special tool such as a puller.
a and 4b need to be pulled out in the axial direction.
Inner diameter side, outer diameter side engagement grooves 39, 40, 40a,
The inner peripheral surfaces of the support holes 37, 37a and the outer races 4a, 4b
There is a possibility that the outer peripheral surface and the outer peripheral edge of the outer end surface may be damaged. this
As a result, the knuckles 34 and 34a are also replaced,
Repair and replacement costs are unavoidable. The wheel rotation support device shown in FIG.
In the case of the above, the wheel supporting rolling bearing unit 1a
The work of connecting and fixing the knuckle 34 can be troublesome
There is a potential. That is, the support provided on the knuckle 34
When the outer ring 4a is inserted into the hole 37,
39, the retaining ring 35 is externally fitted.
5 to make the outer diameter smaller than the inner diameter of the support hole 37,
It is necessary to reduce the outer diameter of the retaining ring 35. Like this
The diameter of the retaining ring 35 is reduced by the second flange provided on the hub 5.
Between the inner surface of the flange 11 and the outer surface of the knuckle 34
Performing by entering a jig or hand into a narrow space
Required and can be cumbersome. Note that FIG.
In the case of the wheel rotation support device shown in FIG.
With the retaining ring 35a fitted and fixed to the end,
4b and the retaining ring 35a may be inserted into the support holes 37a.
Therefore, the connection work between the outer ring 4b and the knuckle 34a is troublesome.
However, the cost of repair and replacement is
It is. In view of such circumstances, the present invention has
No costly replacement and easy assembly
It was invented to realize a rotation support device for wheels. SUMMARY OF THE INVENTION A rotary support for a wheel according to the present invention.
The device comprises a support member that forms a suspension and supports the wheels.
And a support member provided on an inner diameter side of a support hole provided in the support member.
And a rolling bearing unit for supporting the wheel. This
The rolling bearing unit for supporting the wheel is located inside the support hole.
The outer ring that is fitted and supported and does not rotate during use, and the outer ring
The inner ring is supported concentrically with the outer ring, and the outer end
Rotating member having a flange for supporting
The inner ring raceway provided on the outer peripheral surface of the member and the inner peripheral surface of the outer ring
A plurality of rolling elements that are rotatably provided between the
It has a moving body. And the above-mentioned support hole
With the outer ring fitted inside, it is installed on the inner peripheral surface of the inner end of this support hole.
When the inner end surface of the outer ring contacts the outer surface of the
The outer diameter side engagement groove formed on the inner peripheral surface of the support hole and
The engaging member is engaged with the inner diameter side engaging groove formed on the outer peripheral surface of the outer ring.
The outer ring shaft with respect to the support member.
Block directional displacement. In particular, in the wheel rotation supporting device of the present invention,
Preferably, the engaging member includes the outer diameter side engaging groove and the inner diameter side engaging groove.
To engage with the engagement groove on one side of the groove.
The formed main part and the plural places in the circumferential direction of this main part
The outer diameter side engaging groove
Engages with the engagement groove on the other side of
Any of the plurality of protrusions and the circumferential end of the main portion
One end is formed by bending outward in the radial direction.
The main part and each protruding part are engaged with both the radial and inner diameter engaging grooves.
And a bent portion exposed from the support member in the
It is a thing. Then, the inner peripheral surface of each of the protrusions is
Inclining in such a direction that the inner diameter becomes smaller as going inward.
I have. The rotary support device for a wheel according to the present invention having the above-described structure.
According to the installation, when repairing, replacing, etc., the outer ring is
Removal work can be performed easily. That is, this support member
The outer ring is fitted into the support hole provided, and the engaging member is
The main part and each protruding part that constitute the outer diameter side and the inner diameter side both engagement grooves
At the circumferential end of the engaging member.
The folded portion is exposed from the support member. this
Therefore, when removing the outer ring from the support hole,
With the jig locked at the bent part, move the engaging member
In the radial direction while pulling out in the direction
By pulling it up and winding it up, this locking part
The material can be easily removed from both the inner and outer diameter engagement grooves. And
During this removal work, these outer and inner diameter sides
Both engagement grooves, the outer peripheral surface of the outer ring, the inner peripheral surface of the support hole, etc.
Since there is no damage, repair and replacement costs can be prevented from increasing.
You. Further, of the respective projecting portions constituting the engaging member,
In the direction in which the inner surface becomes smaller as it goes inward in the axial direction,
This engaging member is made to have a partially concave conical concave surface.
Easily engages with the inner and outer diameter engagement grooves.
Lick That is, the above-mentioned projections are aligned with the outer peripheral edge of the inner end face of the outer ring.
And the outer peripheral surface, or the outer peripheral edge,
While increasing or decreasing the diameter in the radial direction by the peripheral surface,
Each projection can be engaged with the engagement groove. Paraphrase
If so, the main part of the engaging member is connected to the inner and outer engaging grooves.
After engaging either of them, insert the outer ring
By inserting from the outside, these outer rings and support members
And the above-mentioned engaging member can be engaged. For this reason,
Of the rolling bearing unit for wheel support on the support member
Work can be performed easily. 1 to 6 show an embodiment of the present invention.
1 shows a first example. The wheel rotation support device of this example is:
Claims, comprising a suspension to support the wheels
A knuckle 34b as a support member, and the knuckle 34b
Wheel support supported on the inner diameter side of the support hole 37b provided in
And a rolling bearing unit 1c. Car of these
The wheel supporting rolling bearing unit 1c is a constant velocity joint 2
To form the wheel drive bearing unit 3b.
You. The feature of the present invention is that the above-described wheel supporting rolling bearing unit is used.
Attachment and removal of the knit 1c and the knuckle 34b
The point is to realize a structure that can be easily performed. Above wheel
The basic structure of the drive bearing unit 3b is described above.
It is almost the same as the conventional structure shown in FIGS.
Parts are assigned the same reference numerals, and duplicate descriptions are omitted.
Will be simplified, and the features of the present invention and the aforementioned
The following description focuses on the differences from the conventional structure. The outer race 4c is fitted and fixed in the support hole 37b.
In this state, the engaging member 44 is attached to the inner peripheral surface of the support hole 37b.
Outer diameter side engaging groove 40b formed and outer peripheral surface of outer ring 4c
By engaging with the inner diameter side engagement groove 39a formed at
And the axial direction of the outer ring 4c with respect to the knuckle 34b.
Displacement is prevented. That is, the inner end of the outer peripheral surface of the outer ring 4c
State in which it is recessed radially inward from this outer peripheral surface at the offset part
The inner diameter side engaging groove 39a is formed over the entire circumference.
On the other hand, the inner peripheral surface of the support hole 37b is
When a flange 41a protruding radially inward from the surface is provided,
In the portion deviated axially outward from the flange 41a,
The portion facing the inner diameter side engaging groove 39a is also
The outer diameter side engaging groove 40b is recessed in the
Provided. The outer ring 4c is inserted into the support hole 37b.
The inner end face of the outer ring 4c is
1a while being in contact with the outer surface,
The engagement member 44 is engaged with the engagement grooves 39a and 40b.
The outer ring 4b with respect to the knuckle 34b.
Axial displacement is prevented. In addition, if necessary,
The outer ring 4c rotates (creeps) in the support hole 37b.
The outer peripheral surface of the outer ring 4c and the support holes 3
Serration grooves and key grooves are provided on the inner peripheral surface of 7b.
Between the outer peripheral surface of the outer ring 4c and the inner peripheral surface of the support hole 37b.
May be combined. The engaging member 44 is made of, for example, a cold-rolled steel plate.
(SPCC), an elastic metal plate such as a stainless steel plate
Is formed by press molding, and is shown in detail in FIG.
As shown in FIG.
45 projecting radially inward from the inner circumferential surface of each
A plurality of inner diameter side protrusions 4 which are the protrusions described in claim 1;
6, 46, and one of the circumferential ends of the main portion 45.
Folded part 4 formed by bending the end part radially outward
7 is provided. The main part 45 of these is engaged with the outer diameter side.
It is freely engageable (fittable) in the groove 40b. And this
In the state where the main portion 45 is engaged with the outer diameter side engagement groove 40b as described above,
The outer end face of the main portion 45 is positioned outside the outer diameter side engagement groove 40b.
The inner end face to the inner side face of the outer diameter side engagement groove.
If possible, make contact with the outer surface of the flange 41a.
As a result, the engagement member 44 is axially moved within the support hole 37b.
In the direction. Each of the inner diameter side projections 46, 46
A circumferential direction of the inner end portion in the axial direction or the intermediate portion of the main portion 45, etc.
A plurality of intervals (12 locations in this example) are set in the main part 4
5 to form an acute angle.
You. That is, each of the inner diameter side projections 46, 46
45 paired cuts formed at the axially inner end of 45
U-shape formed in the middle or in the axial middle part of the main part 45
Is formed by bending the inner part of the cut of
It is freely engageable with the inner diameter side engagement groove 39a provided in the outer ring 4c.
are doing. Further, the bent portion 47 is formed by
When the support hole is fitted inside the outer diameter side engagement groove 40b,
37b. That is, the support holes 37b
The outer diameter side engaging groove 40b is formed in a part of the inner circumferential surface of the outer end portion in the circumferential direction.
From the outer surface of the support hole 37b to the periphery of the outer end opening of the support hole 37b.
A concave portion 48 that is recessed radially outward is provided. And
By positioning the bent portion 47 in the concave portion 48
When the outer ring 4c is removed from the support hole 37b,
Then, a jig is attached to the bent portion 47 through the concave portion 48.
It can be locked freely. That is, as described later,
In a state where the jig is locked to the bent portion 47, the bent portion 47
Winding the main part 45 while pulling the main part 45 outward in the circumferential direction
Accordingly, the engagement member 44 is connected to each of the inner diameter side and the outer diameter side.
It can be removed from the mating grooves 39a, 40b. Further, in the case of this embodiment, each of the inner diameter side protrusions 4 is formed.
The inner diameter of the inner peripheral surface of each of the inner and outer surfaces of the inner and outer surfaces of the inner and outer surfaces of the inner and inner surfaces of the inner and inner surfaces of the inner and outer surfaces of the inner and outer surfaces of the inner and outer surfaces of the inner and outer surfaces of the inner and outer surfaces of the inner and outer surfaces of
And the inner side
The depth of the bottom surface of the engagement groove 39a increases toward the inside in the axial direction.
Is formed in a conical convex shape inclined in the direction in which
You. For this reason, the engaging member 44 is attached to the outer race 4c.
From the inside to the outside of the outer ring 4c in the axial direction (from right to left in the figure)
If it fits outside, each of the inner diameter side projections 46, 46 will be
4c, while being elastically deformed radially outward by the inner edge of
These inner diameter side protrusions 46, 46 and the inner diameter side engagement grooves 39 are provided.
a can be engaged. Also, like this,
The protrusions 46, 46 engage with the inner diameter side engagement grooves 39a.
At the same time, the outer end surface of the main portion 45 is
b, the inner end surface of the main portion 45 is
Of the outer ring 4c in a state where the outer ring
The end face engages (contacts) the outer side face of the flange portion 40a.
In addition, the size of each part is regulated. The outer ring 4 is formed by the engagement member 44 as described above.
c indicates that the axial displacement in the support hole 37b is as follows.
Will be blocked. First, the outer ring 4c is displaced axially outward.
If so, the outer surface of the outer diameter side engaging groove 40b
And the outer end surface of the main portion 45, and the inner diameters
The inner end edges of the side projections 46, 46 and the inner diameter side engagement groove 39a
The outer ring 4c is shifted axially outward by engagement with the bottom surface of
Is prevented from ranking. On the other hand, this outer ring 4c is
When trying to displace to the side, the inner end face of this outer ring 4c
By the engagement (contact) between the outer surface of the flange portion 41a and the
Is prevented from being displaced inward in the axial direction.
Incidentally, the axial direction of the main part 45 constituting the engaging member 44
Inner edges of both end faces and the inner diameter side protrusions 46, 46
As described above, the inner end surface of the outer race 4c is
1a, the outer diameter side engaging groove 40 is in contact with the outer side surface.
b, the outer side surfaces and the bottom surface of the inner diameter side engaging groove 39a.
The outer race 4c in the axial direction
There is no shaking. In the case of this embodiment, the driving member 19 is formed.
Spline shaft 18 and spline hole 1 provided in hub 5a
And 5 are connected and fixed by a missing annular retaining ring 49.
You. That is, the outer peripheral surface near the outer end of the spline shaft 18
In addition, an inner locking groove 50 is formed over the entire circumference,
The inner locking groove is formed on the inner peripheral surface near the outer end of the spline hole 15.
An outer locking groove 51 is formed at a portion that matches the outer groove 50.
Then, the inner locking groove 50 and the outer locking groove 51 are
The retaining ring 49 is extended over both the locking grooves 50 and 51.
By mounting in the state, the spline shaft 18
It is prevented from getting out of the spline hole 15. In the case of the present embodiment, the inner end of the hub 5a is
The shaft of the pair of inner rings 6, 6 fitted externally to the small-diameter step portion 13a
The part protruding inward from the inner ring 6 in the direction
By caulking outward and forming the caulked portion 52
Each of the inner rings 6, 6 comes out of the small-diameter step portion 13a.
Is prevented. And an outer end opening of the hub 5a.
The seal lid 53 is fitted inside the portion, and the caulking portion 52
Between the outer end surface of the outer ring 16 for the constant velocity joint
By providing the seal member 54, the spline shaft 1
8 and the inner peripheral surface of the spline hole 15
Foreign matter is prevented from entering the in-engagement portion. Rolling bearing for wheel support constructed as described above
The unit 1c includes a support hole 3 provided in the knuckle 34a.
7b is attached as follows. First, this support hole 3
7b from inside or outside in the axial direction of the support hole 37b.
While the engaging member 44 is elastically deformed radially inward.
The main part 45 constituting the engaging member 44 is inserted
Engage (fit) into the radial engagement groove 40b. In addition, like this
The work of elastically deforming (reducing the diameter) inward in the radial direction
Since 45 is formed as an annular ring, there is no trouble.
Also, the outer diameter d of the main part 45 in a free state. ₄₅ ｛Figure 4 (B)
Is changed to the inner diameter d of the outer diameter side engagement groove 40b. _40b (Figure 1
), So that the main part 45 is
In a state where the outer diameter side engagement groove 40b is engaged,
The engaging member 44 does not come off the mating groove 40b. Next
Thus, the rolling bearing unit 1c for supporting the wheel is constituted.
The outer end surface of the outer ring 4c is
Pressing inward in the axial direction with a pressing jig
As a result, the outer ring 4c is inserted into the support hole 37b.
You. The inner edge of the outer ring 4c is
Each of the inner diameter side projections 46, 46 is elastically deformed radially outward.
Further, the outer ring 4c is further advanced, and each of these inner diameter side projections is projected.
The portions 46, 46 are engaged with the inner diameter side engagement grooves 39a.
In this manner, each of the inner diameter side projections 46, 46 and the inner diameter side engagement groove
39a and the inner end face of the outer ring 4c and
The contact (engagement) with the outer surface of the collar portion 41a is described above.
It is as expected. Then, the support hole 37b is inserted into the support hole 37b.
After the outer ring 4c is connected and fixed, the drive member 19
The retaining ring 49 is inserted into the inner locking groove 50 provided in the in shaft 18.
The spline shaft 18 is connected to the hub 5 a
Of the wheel supporting rolling shaft
The receiving unit 1c and the constant velocity joint 2 are connected. However
Then, as in the illustrated example, the outer race 16 for the constant velocity joint is
If the outer diameter is smaller than the inner diameter of the support hole 37b,
Rolling bearing unit 1c for supporting wheels and constant velocity joint
2 may be combined in advance. On the other hand, the rolling bearing unit for supporting the wheel
1c is removed from the support hole 37b.
Pull the shaft 18 out of the spline hole 15 in advance.
You. In addition, this extraction work is performed by the spline hole 15 described above.
The side surface of the outer locking groove 51 formed on the inner peripheral surface is appropriately inclined.
If this is done, a hammer or the like will be attached to the outer end face of the spline shaft 18.
It can be easily done by applying an impact load. Soshi
The bending provided at the circumferential end of the locking member 44
In a state where the jig is locked to the barbed portion 47, it is indicated by an arrow α in FIG.
In this manner, the bent portion 47 is displaced radially outward.
Then, the locking member 44 is pulled out in the circumferential direction. This example
It is possible to pull out all the locking members 44 in the radial direction as in
If there is not enough space available,
Pull out the locking member 44 while winding it around the jig
Good. Then, the locking member 44 is connected to both the inner diameter side and the outer diameter side.
When the outer ring 4c is removed from the engagement grooves 39a and 40b,
Is displaced outward in the axial direction, and the outer ring 4c,
Pull out the rolling bearing unit 1b from the support hole 37a.
Wipe away The rotary support for the wheel of the present embodiment constructed as described above.
In the case of the device, the knuckle 34b
The operation of removing the outer ring 4c from the vehicle can be easily performed. That is,
The outer ring 4 is provided in a support hole 37b provided in the knuckle 34b.
c in a fixed state, the circumferential end of the engaging member 44
The bent portion 47 provided in the portion is exposed through the support hole 37b.
Let me put it out. Therefore, the outer ring 4c is connected to the support hole 37.
The jig is locked to this bent part 47 when it is removed from b.
In this state, pull out the engaging member 44 in the circumferential direction.
If this locking member 44 is wound,
Can be easily removed from both engagement grooves 39a, 40b
You. In addition, during this removal work, these outer diameter side,
Inner diameter side engagement grooves 39a, 40b, outer peripheral surface of outer ring 4c
And the inner peripheral surface of the support hole 37b is not damaged.
Repair and replacement costs can be prevented from increasing. The engaging member 44
Can not be reused, but this engaging member 4
4 can be manufactured at low cost by press molding.
The above repair and replacement costs will not increase unnecessarily. Each of the inner diameter side protrusions provided on the engagement member 44 is provided.
The inner diameter of the inner peripheral surfaces of the protrusions 46, 46 is increased toward the inside in the axial direction.
The slope is inclined in the direction in which
Such a shape can be easily formed by pressing. Because of this
The manufacturing cost of the engagement member 44 does not increase. Also,
The mating member 44 and the inner and outer diameter side engagement grooves 39a, 40
b can be easily engaged. That is, each of the above inner diameter sides
The projecting portions 46, 46 are formed by the outer peripheral edge of the inner end face of the outer race 4c.
While expanding the diameter, these inner diameter side projections 46, 46
It can be engaged with the side engagement groove 39a. Paraphrase
In this case, the engaging member 44 is engaged with the outer diameter side engaging groove 40b.
Then, the outer ring 4c is axially inserted into the support hole 37a.
By inserting from the outside, each inner diameter side protrusion 46,
46 can be engaged with the inner diameter side engagement groove 39a.
You. For this reason, the knuckle 34b is provided with a wheel supporting rolling shaft.
The work of attaching the receiving unit 1c can be easily performed. In the case of this embodiment, the locking member 44 is
To be wrapped around the jig in the recess 48 provided in the
The locking member 44 is engaged with the inner diameter side and the outer diameter side.
Pull out from the grooves 39a and 40b. However, the concave portion 48
The knuckle 34b is provided so as to penetrate both inner and outer peripheral surfaces.
Then, by pulling out the locking member 44 radially outward,
This locking member 44 is engaged with the inner and outer diameter engagement grooves 39.
a, 40b. In the case of this example,
The projecting portion provided on the engaging member 44 projects radially inward.
The inner diameter side protruding portions 46, 46 are provided.
An outer diameter side protruding portion that protrudes radially outward may be used. This
In the case of, the main part constituting the locking member is attached to the outer peripheral surface of the outer ring.
In addition to engaging with the inner diameter side engaging groove provided,
The protrusion is engaged with the outer diameter side engagement groove provided on the inner peripheral surface of the support hole.
Let When the outer ring is fixedly connected to the support hole,
With the main portion engaged with the inner diameter side engaging groove, the
The outer ring is inserted into the support hole together with the engagement member. This
In this case, each of the outer diameter side protrusions is formed around the outer end of the support hole.
While the diameter is reduced radially inward by the edge and the inner peripheral surface,
It enters the holding hole and engages with the outer diameter side engaging groove. Also book
An example is a wheel supporting rolling bearing unit 1c for driving wheels.
The case where the present invention is applied is shown, but for a driven wheel.
Even if the present invention is applied to a rolling bearing unit for supporting wheels
good. FIG. 7 shows a second embodiment of the present invention.
An example is shown. In the case of this example, rolling bearings for wheel support
A unit provided at an intermediate portion of the hub 5b constituting the unit 1d
The first inner raceway of the first and second inner raceways 12 and 14
12 are formed directly on the outer peripheral surface of the hub 5b. So
The configuration and operation of the other parts are the same as in the first example described above.
The same is true. The present invention is constructed and operated as described above.
Replacement and repair with a structure that can reduce unsprung load.
Bearing unit for supporting wheels that can easily handle
Can be realized at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a first example of an embodiment of the present invention. FIG. 2 is an enlarged view of a portion A in FIG. FIG. 3 is an enlarged view of a portion B in FIG. 1; 4A and 4B are views showing the engagement member taken out, wherein FIG. 4A is a cross-sectional view taken along line CC of FIG. 4B, and FIG. FIG. 5 is a view taken in the direction of arrow D in FIG. 1; FIG. 6 is a view similar to FIG. 5, showing a state in which the engagement member is being removed. FIG. 7 is a sectional view showing a second example of the embodiment of the present invention. FIG. 8 is a sectional view showing a first example of a conventional structure. FIG. 9 is a sectional view showing the second example. FIG. 10 is a sectional view showing the third example. [Description of Signs] 1, 1a, 1b, 1c, 1d Rolling bearing unit for wheel support 2 Constant velocity joints 3, 3a, 3b Bearing unit for wheel drive 4, 4a, 4b, 4c Outer ring 5, 5a, 5b Hub 6 Inner ring 7 Rolling element 8 First flange 10 Outer ring raceway 11 Second flange 12 First inner ring raceway 13, 13a Small diameter step 14 Second inner ring raceway 15 Spline hole 16 Outer ring for constant velocity joint 17 Inner ring for constant velocity joint 18 Spline shaft 19 Drive member 20 Outer engagement groove 21 Second spline hole 22 Inner engagement groove 23 Ball 24 Cage 25 Cage guide surface 26 Male thread 27 Nut 28 Drive shaft 29 Male spline 30 Lock groove 31 Retaining ring 32 Locking Step 33 Mounting Holes 34, 34a, 34b Knuckle 35, 35a Retaining Ring 36 Male Serrations 37, 37a, 37b Supporting Hole 38 Serrations 39, 39a Inner diameter side engaging grooves 40, 40a, 40b Outer diameter side engaging grooves 41, 41a Flange 42 Inner bent portion 43 Outer bent portion 44 Engaging member 45 Main portion 46 Inner diameter protruding portion 47 Folded portion 48 recess 49 retaining ring 50 inner locking groove 51 outer locking groove 52 caulking portion 53 seal lid 54 seal member

   ────────────────────────────────────────────────── ─── Continuation of front page    F term (reference) 3J017 AA01 CA06 DA01 DB03 DB04                 3J037 AA08 BA01 BB07 HA09 JA02                       JA06 JA09                 3J101 AA02 AA32 AA43 AA54 AA62                       BA51 BA54 BA56 BA77 FA44                       FA46 FA51 GA02 GA03

Claims (1)

Claims: 1. A vehicle comprising: a support member that constitutes a suspension device and supports wheels; and a wheel-supporting rolling bearing unit supported on an inner diameter side of a support hole provided in the support member. The rolling bearing unit for supporting a wheel is an inner ring supported in the support hole and does not rotate during use.The outer ring is supported concentrically with the outer ring on the inner diameter side of the outer ring. A rotating member having a flange for support, and a plurality of rolling elements rotatably provided between an inner raceway provided on an outer peripheral surface of the rotating member and an outer raceway provided on an inner peripheral surface of the outer race. In a state where the outer ring is fitted in the support hole, the inner end surface of the outer ring is brought into contact with the outer surface of a flange provided on the inner peripheral surface of the inner end of the support hole, An outer diameter side engagement groove formed on the inner peripheral surface of the support hole and the outer ring By engaging the engagement member with the inner diameter side engagement groove formed on the outer peripheral surface, the wheel rotation support device that prevents the axial displacement of the outer ring with respect to the support member, the engagement member includes: A main portion formed in a partially annular shape, which engages with the engagement groove on one of the outer diameter side engagement groove and the inner diameter side engagement groove, and a plurality of circumferential portions of the main portion in the circumferential direction. A plurality of protruding portions formed by bending on the other side in the radial direction and engaging with the other side of the outer diameter side engagement groove and the inner diameter side engagement groove; One of the circumferential end portions is formed by bending outward in the radial direction, and the main portion and the respective projecting portions are engaged with the outer diameter side and inner diameter side engagement grooves. And a bent portion exposed from the support member in a state, wherein the inner peripheral surface of each of the projecting portions is directed in such a direction that the inner diameter decreases toward the inner side in the axial direction. A rotation support device for wheels, characterized by being inclined.