JP2586450Y2 - Center bearing support - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a center bearing support. The center bearing support of the present invention is mounted on, for example, a driving system of an automobile, and rotatably and elastically supports a propeller shaft or an axle shaft.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 10, a metal inner ring 1 and a metal outer ring 2 are connected via a bellows-like rubber-like elastic material spring member 3 to form an inner ring. There is known a center bearing support in which a ball bearing 4 or a roller bearing (hereinafter, simply referred to as a bearing 4) is fitted on the inner peripheral side of the support 1. 7 is an oil seal.

[0003] The center bearing support is an inner ring 1
The outer race 5 of the bearing 4 is directly fitted to the inner peripheral side of the bearing, and the bearing 4 is held by the fitting margin.
Therefore, the outer race 5 may be slightly reduced in diameter due to the fitting margin, and the outer race 5 may be deformed.
When the diameter is reduced, the clearance between the outer race 5 and the ball 6 or the roller (hereinafter, simply referred to as the ball 6) becomes smaller than an appropriate value, and the rotational resistance becomes excessive or abnormal rotational vibration occurs. .

[0004] To address the above problems, the applicant has
First, as shown in FIG. 11, an annular elastic member 8 made of a rubber-like elastic material is fitted on the inner peripheral side of the inner ring 1, and the elastic member 8 is formed.
It has been proposed to fit the bearing 4 on the inner peripheral side of the. However, this prior art has the following problems.

[0005]

That is, as shown in FIGS. 12 and 13, when the bearing 4 is pressed into the inner peripheral side of the elastic member 8, the elastic member 8 is wrinkled and deformed. Since the gap between the inner ring 1 and the outer race 5 is completely filled by the elastic member 8 and the elastic member 8 is compressed to its limit,
Even if the elastic member 8 is interposed between the outer race 5 and the outer race 5, there is a possibility that a larger tightening load than expected at the design stage may act on the outer race 5.

[0006]

A solution for the present invention has been made in view of the above, which has been devised to solve the problems found in the prior art, in order to achieve this object, the inner ring 1 and the outer
The ring 2 is made of a rubber-like elastic member 3 having a bellows shape.
In via connected to fitting the rubber-like elastic material made of elastic member 8 exhibiting annular inner peripheral side of the inner ring 1, center bearing support, which is fitted a bearing 4 on the inner peripheral side of the elastic member 8 there, the outer race 5 of the bearing 4,
The elastic member 8 or the inner ring 1 is provided with a portion for absorbing the deformation of the elastic member 8.

[0007]

[Function] Outer race 5 of bearing 4, elastic member 8
Alternatively, when a portion for absorbing the deformation of the elastic member 8 is provided in the inner ring 1, when the bearing 4 is pressed into the inner peripheral side of the elastic member 8, it is possible to prevent the elastic member 8 from being compressed to its limit. Can be prevented.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

First Embodiment As shown in FIGS. 1 and 2,
The inner ring 1 and the outer ring 2 are connected via a spring member 3 made of a rubber-like elastic material having a bellows shape.
An elastic member 8 made of a rubber-like elastic material having a
A center bear in which the bearing 4 is fitted on the inner peripheral side of the member 8
In the ring support, an annular notch 9 is provided at the press-fit side end of the outer peripheral surface of the outer race 5, and the notch 9 allows the elastic member 8 to be pressed into the inner peripheral side of the elastic member 8. 8 is prevented from being compressed to its limit.

Second Embodiment As shown in FIG. 3, the inner ring 1 and the outer ring 2 have a bellows shape.
The inner ring 1 is connected via a spring member 3 made of rubber-like elastic material.
An annular elastic member 8 made of rubber-like elastic material is fitted on the inner peripheral side.
And the bearing 4 is fitted on the inner peripheral side of the elastic member 8.
In outer bearing support, outer race 5
A required number (two in the figure) of annular concave portions 10 are provided on the outer peripheral surface of the elastic member 8. When the bearing 4 is pressed into the inner peripheral side of the elastic member 8, the elastic member 8 To prevent the compressed state.

Third Embodiment As shown in FIGS. 4 and 5, the inner ring 1 and the outer ring 2 are bellows.
Connection via a spring member 3 made of rubber-like elastic material having a
And an annular rubber-like elastic material on the inner peripheral side of the inner ring 1.
The elastic member 8 is fitted, and the bearing 4
In the center bearing support to which the elastic member 8 is fitted, a required number of concave portions 11 extending in the axial direction are provided on the inner peripheral surface of the elastic member 8, and the bearing 4 is pressed into the inner peripheral side of the elastic member 8 by the concave portion 11. At this time, the elastic member 8 is prevented from being compressed to its limit. Recess 11
Are arranged in a spline shape.

Fourth Embodiment As shown in FIG. 6, the inner ring 1 and the outer ring 2 have a bellows shape.
The inner ring 1 is connected via a spring member 3 made of rubber-like elastic material.
An annular elastic member 8 made of rubber-like elastic material is fitted on the inner peripheral side.
And the bearing 4 is fitted on the inner peripheral side of the elastic member 8.
In the intermediate bearing support, a required number (two in the figure) of annular concave portions 12 are provided on the inner peripheral surface of the elastic member 8, and the bearing 4 is press-fitted into the inner peripheral side of the elastic member 8 by the concave portions 12. At this time, the elastic member 8 is prevented from being compressed to its limit.

Fifth Embodiment As shown in FIG. 7, the inner ring 1 and the outer ring 2 have a bellows shape.
The inner ring 1 is connected via a spring member 3 made of rubber-like elastic material.
An annular elastic member 8 made of rubber-like elastic material is fitted on the inner peripheral side.
And the bearing 4 is fitted on the inner peripheral side of the elastic member 8.
In the intermediate bearing support, a required number (two in the figure) of annular projections 13 are provided on the inner peripheral surface of the elastic member 8, and the bearing 4 is used to mount the bearing 4 on the inner peripheral side of the elastic member 8. This prevents the elastic member 8 from being compressed to its limit when pressed.

Sixth Embodiment As shown in FIGS. 8 and 9, the inner ring 1 and the outer ring 2 are bellows.
Connection via a spring member 3 made of rubber-like elastic material having a
And an annular rubber-like elastic material on the inner peripheral side of the inner ring 1.
The elastic member 8 is fitted, and the bearing 4
A relief hole 14 is provided in the inner ring 1 in the center bearing support to which the elastic member 8 is pressed when the bearing 4 is pressed into the inner peripheral side of the elastic member 8. To prevent the compressed state. The required number of the relief holes 14 are arranged in the circumferential direction.

[0015]

[Effects of the Invention] The present invention has the following effects.

[0016] That is, the inner ring 1 and the outer ring 2 coloration bellows-like
Connected via a spring member 3 made of rubber-like elastic material
An elastic member 8 made of a rubber-like elastic material having an annular shape on the inner peripheral side of 1
And the bearing 4 is fitted on the inner peripheral side of the elastic member 8.
Center bearing support, bearing 4
When the bearing 4 is pressed into the inner peripheral side of the elastic member 8 by providing the outer race 5, the elastic member 8 or the inner ring 1 with a portion for absorbing the deformation of the elastic member 8, the elastic member 8 Since the compressed state does not occur, it is possible to prevent a large tightening load from acting on the outer race 5. Therefore, the tightening load of the bearing 4 can always be made appropriate, and smooth rotation of the bearing 4 can be obtained.

[0017] The center bearing support is automatic
Attached to the drive shaft of a car etc. and swings with the drive shaft
That support the inner ring, elastic members and bearings
Inner ring, elastic part to reduce the load of the spring member
Material and bearing mass should be as small as possible
It is desirable that the thickness of the inner ring be as thin as possible.
If the thickness of the ring is reduced, its rigidity will decrease.
When the ring is pressed in, the elastic member is wrinkled and a load acts on the inner ring.
When doing so, the inner ring may be deformed. Against this
According to the present invention having the above configuration, the deformation absorbing portion
Large load on the inner ring to absorb the deformation of the elastic member
Does not act, and even if the inner ring is
The ring does not deform. Therefore, reduce the thickness of the inner ring
It becomes possible to set the spring member,
The durability of the spring member.
Can be improved.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a center bearing support according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing an assembling procedure of the center bearing support.

FIG. 3 is a sectional view of a main part of a center bearing support according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a center bearing support according to a third embodiment of the present invention.

FIG. 5 is a view in the direction of arrow A in FIG. 4;

FIG. 6 is a sectional view of a main part of a center bearing support according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a main part of a center bearing support according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view of a main part of a center bearing support according to a sixth embodiment of the present invention.

9 is an enlarged view of a main part of FIG. 8;

FIG. 10 is a half sectional view of a center bearing support according to a conventional example.

FIG. 11 is a half sectional view of a center bearing support according to another conventional example.

FIG. 12 is an explanatory view showing an assembling procedure of the center bearing support.

FIG. 13 is an explanatory view showing an assembling procedure of the center bearing support.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 3 Spring member 4 Bearing 5 Outer race 6 Ball 7 Oil seal 8 Elastic member 9 Notch 10, 11, 12 Concave part 13 Convex part 14 Escape hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16C 27/06 F16C 35/077 B60K 17/24

Claims (1)

(57) [Scope of request for utility model registration] 1. An inner ring (1) and an outer ring (2) having a bellows shape.
Connected via a rubber-like elastic material spring member (3),
An annular elastic member (8) made of rubber-like elastic material is fitted on the inner peripheral side of the inner ring (1), and a bearing (4) is fitted on the inner peripheral side of the elastic member (8). a bearing support, an outer race of the bearing (4) (5), wherein the elastic member (8) or the inner ring (1), in that a portion for absorbing the deformation of the elastic member (8) Characterized center bearing support.