JP2001263456A - Drive shaft support bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive shaft support bearing preventing the service life and performance of the bearing from being influenced by the distortion of a housing fitted to an outer ring. SOLUTION: This drive shaft support bearing device is so constituted that an inner ring of a sealed rolling bearing is mounted to a drive shaft and that the housing formed with a radial flange fixed to a support body is fitted to the outer peripheral surface of an outer ring. In this constitution, the housing and the outer ring 3 are integrally formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for supporting a drive shaft mounted on an automobile transmission device or the like.

[0002]

2. Description of the Related Art Conventionally, as a rolling bearing device for supporting a drive shaft, for example, the one shown in FIG. 2 is known. This bearing device includes an inner ring 21, an outer ring 22,
A sealed ball bearing 20 having a ball 23 interposed between the inner and outer rings 21 and 22 and seal members 24 disposed at both ends of the outer ring 22 to seal the inside of the bearing is used, and the inner ring 21 is mounted on a drive shaft 25. A housing 26 having a flange 27 extending radially outward at one end of the outer periphery is fitted to the outer peripheral surface of the outer race 22, and the flange 27 of the housing 26 is fixed to a support 28 such as a vehicle body. Configuration. Thus, the drive shaft 25 is supported by the support 28 via the ball bearing 20. Since such a drive shaft support bearing device is required to support the drive shaft 25 within the limited radial space, the inner ring 21 and the outer ring 22 of the ball bearing 20 are designed to have a small thickness. Further, a rubber seal 24a and a slinger 2 provided to prevent water from entering the inside of the bearing from the outside.
4b, the inner and outer rings 21,
22 Widely designed.

[0003]

In the drive shaft support bearing device described above, since the inner and outer races 21 and 22 are thin and wide, the housing 26 having the flange 27 formed thereon.
If the inner diameter of the outer ring 22 is distorted, the outer ring 22 is distorted when the housing 26 and the outer ring 22 are fitted, and the life of the bearing and the rotational performance may be reduced.

[0004] The present invention has been made to address the above-described problems, and has as its object to provide a drive shaft support bearing in which distortion of a housing fitted to an outer ring does not affect bearing life and performance.

[0005]

As means for solving the above-mentioned problems, an inner ring of a sealed rolling bearing is mounted on a drive shaft, and a radial flange fixed to a support is formed on an outer peripheral surface of an outer ring. A drive shaft support bearing device in which a housing is fitted, wherein the housing and the outer ring are formed integrally.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of the present invention will be described with reference to FIG. The bearing device of the present invention is a sealed ball having an inner ring 2, an outer ring 3, a ball 4 interposed between the inner and outer rings 2, 3, and a sealing member 5 disposed at both ends of the outer ring 3 to seal the inside of the bearing. Bearing 1 is used and inner ring 2
Is mounted on the drive shaft 6 and a flange 7 extending radially outward is formed at one end of the outer periphery of the outer race 3. That is, in the conventional structure, the housing having the flange formed therein and the outer ring are integrated, in other words, the outer ring 3 has a configuration in which the housing also serves as the housing.
A screw hole 8 for a bolt is formed in the flange 7, and the flange 7 is fastened to the support 9 by a bolt (not shown) screwed into the screw hole 8. This allows
The drive shaft 6 is supported by the support 9 via the ball bearing 1. Further, the seal member 5 is composed of a rubber seal 5a having a lip fixed to both ends of the outer ring 3 and sliding on the inner ring 2, and a slinger 5b disposed axially outside the rubber seal 5a and fixed to the inner ring 2. It is configured.

In the present invention, since the flange 7 is formed directly on the outer ring 3, the radial space for supporting the drive shaft 6 is limited, so that the inner and outer rings 2, 3 are designed to be thin. Even if it does, there is no influence of the inner diameter distortion of the housing due to the elimination of the housing fitted to the outer ring 3 as in the prior art, and there is no fear of deterioration of the bearing life and the rotation performance. Further, when the outer diameter of the outer ring 3 in the present invention is adjusted to the outer diameter of the housing of the conventional structure, the pitch circle diameter of the balls 4 of the present invention can be increased, so that the number of the balls 4 can be increased and the rated capacity of the bearing Can be increased. Further, when the bearing of the present invention and the conventional bearing have the same rated load, the present invention makes the outer ring 3 and the housing integral, so that the bearing device becomes compact and lightweight.

[0008]

According to the present invention, the inner ring of the sealed rolling bearing is mounted on the drive shaft,
In a drive shaft support bearing device in which a housing having a radial flange fixed to a support is fitted, the housing and the outer ring are integrally formed, so that distortion of the housing affects the outer ring. Thus, it is possible to provide a drive shaft support bearing that does not affect bearing life and performance.

[Brief description of the drawings]

FIG. 1 is a sectional view of a drive shaft support bearing device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a conventional drive shaft support bearing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealed ball bearing 2 Inner ring 3 Outer ring 4 Ball 5 Seal member 6 Drive shaft 7 Flange 9 Support

Claims (1)

[Claims] 1. A drive shaft support bearing device in which an inner ring of a sealed rolling bearing is mounted on a drive shaft, and a housing having a radial flange fixed to a support is formed on an outer peripheral surface of the outer ring. A drive shaft support bearing device, wherein the housing and the outer ring are formed integrally.