JP2593607Y2 - 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 drive system of an automobile, and rotatably and elastically supports the propeller shaft via the center bearing.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
And the outer ring 22 are connected via a spring member 23 made of a rubber-like elastic material having a bellows shape, a bearing retainer 24 is fitted on the inner peripheral side of the inner ring 21, and the inner ring 21 and the bearing retainer 24 are sealed. A center bearing support provided with portions 25 and 26 is known. The center bearing support shown in FIG.
26 has oil seals 27 and 28, respectively, as shown in FIG. 5, there is also a labyrinth type center bearing support without an oil seal (see Japanese Utility Model Laid-Open No. 4-25026).

[0003]

However, in the above-mentioned prior art, since one of the seal portions 25 is provided directly on the inner ring 21 to which the spring member 23 is vulcanized and bonded, the sealing property (particularly the sealing property against muddy water) is provided. ), The shape of the inner ring 21 must be changed each time the shape of the propeller shaft (not shown) to be supported by the center bearing support changes, or the shape of the inner ring 21 changes accordingly. Inner ring 21, spring member 23 and outer ring 2
However, there is a problem that a mold (not shown) for molding the vulcanized molded product of No. 2 needs to be changed.

[0004]

SUMMARY OF THE INVENTION In view of the above points, the present invention has been devised to solve the above-mentioned problems in the prior art. To achieve this object, an inner ring and an outer ring are required. In a center bearing support connected via a rubber-like elastic material spring member exhibiting a bellows shape, a bearing case is fitted on the inner peripheral side of the inner ring, and the bearing case holds the bearing on the inner peripheral side. It is divided into two in the axial direction, and a seal portion is provided in each of the divided bodies.

[0005]

If the seal case is provided on the bearing case fitted to the inner ring, the shape of the bearing case can be changed, for example, when the specification of the sealing property is changed. There is no need to change the shape of the inner ring. The reason why the bearing case is divided into two parts in the axial direction is to dispose seal parts on both sides in the axial direction of the bearing.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

As shown in FIG. 1, an inner ring 1 and an outer ring 2 are connected via a spring member 3 made of a rubber-like elastic material having a bellows shape, and a bearing case 4 is provided on the inner peripheral side of the inner ring 1. Is fitted. The bearing case 4 is made of a rigid material such as metal, is annular, has a bearing 11 fitted and held on the inner peripheral side thereof, and is divided into two parts in the axial direction. Are provided with seal portions 7, 8 having oil seals 9, 10, respectively. The divided bodies 5 and 6 have the same shape, and the oil seals 9 and 10 also have the same shape. The divided bodies 5 and 6 and the oil seals 9 and 10 having the same shape sandwich the bearing 11. They are arranged in opposite directions.

In the center bearing support having the above structure, for example, the shape of the bearing case 4 may be changed when the specification of the sealing property is changed.
It is not necessary to change the shape of the inner ring 1 to which the spring member 3 is vulcanized and bonded. Therefore, there is no need to change the mold for molding the vulcanized molded product including the inner ring 1, the spring member 3, and the outer ring 2, and the vulcanized molded product and the mold can be shared by a plurality of types of center bearing supports. It becomes possible.

In the center bearing support, one end portion 1a of the inner ring 1 in the axial direction is bent inward in the radial direction, and this is used as a positioning, and the bearing case 4 and the oil seals 9, 10 are provided on the inner periphery of the inner ring 1. An assembly including the bearing 11 and the bearing 11 is press-fitted from the other end in the axial direction. After the press-fitting, the one end 1a in the axial direction of the inner ring 1 prevents the assembly from coming off. After the press-fitting, as shown in FIG. 2, when the other end 1b in the axial direction of the inner ring 1 is bent radially inward, the retaining action is exerted in this direction as well.

Although the center bearing support according to the above embodiment is of the oil seal type, the present invention is also applicable to a labyrinth type center bearing support having no oil seal as shown in FIG.

[0011]

[Effects of the Invention] The present invention has the following effects. That is, for example, when the specification of the sealing property is changed, the shape of the bearing case may be changed, and it is not necessary to change the shape of the inner ring to which the spring member is vulcanized and bonded. Therefore, there is no need to change the mold for molding the vulcanized molded product including the inner ring, the spring member, and the outer ring, and the vulcanized molded product and the mold can be shared by a plurality of types of center bearing supports. Productivity (cost reduction) can be achieved.

[Brief description of the drawings]

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

FIG. 2 is a half sectional view of a center bearing support according to another embodiment of the present invention.

FIG. 3 is a half sectional view of a center bearing support according to another embodiment of the present invention.

FIG. 4 is a half sectional view of a center bearing support according to a conventional example.

FIG. 5 is a half sectional view of a center bearing support according to another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner ring 1a One end in the axial direction 1b The other end in the axial direction 2 Outer ring 3 Spring member 4 Bearing case 5,6 Split body 7,8 Seal part 9,10 Oil seal 11 Bearing

Claims (1)

(57) [Scope of request for utility model registration] 1. A center bearing support in which an inner ring (1) and an outer ring (2) are connected via a bellows-like spring member (3) made of a rubber-like elastic material.
A bearing case (4) is fitted on the inner peripheral side of the bearing, and the bearing case (4) is fitted on its inner peripheral side with a bearing (11).
A center bearing support which is divided into two parts in the axial direction, and wherein seals (7) and (8) are provided in each of the divided bodies (5) and (6).