JPH0791442A - Center bearing support and manufacture thereof - Google Patents

Abstract

PURPOSE:To finish a fit-in process through one cycle, in a center bearing support provided on the inner peripheral side of an inner ring with a first seal, a bearing, a second seal, and a bearing press ring. CONSTITUTION:An annular stepped part 1a is formed in an inner ring 1 and out flanges 4b and 6b are arranged to first and second seals 4 and 6, respectively. A first seal 21, a bearing 5, a second seal 6, and a bearing press ring 7 are simultaneously fitted in the inner peripheral side of an inner ring 1 by means of a stepped part 1a serving as positioning. Through the fit-in, the flange 4b of the first seal 4 is nipped between the stepped part 1a and the bearing 5 and the flange 6b of the second seal 6 is nipped between the bearing 5 and the bearing press ring 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center bearing support for rotatably and elastically supporting a propeller shaft in an automobile or the like, and a method for manufacturing the center bearing support.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, an inner ring 21 and an outer ring 22 both made of metal are connected via an elastic body 23 made of a rubber-like elastic material having a bellows shape. The first dust seal 24, the bearing 25 and the bearing retainer ring 26 are fitted on the inner peripheral side and the bearing retainer ring 2 is attached.
A center bearing support in which a second dust seal 27 is fitted on the inner peripheral side of 6 is known (for example, see Japanese Utility Model Laid-Open No. 4-54724), and this center bearing support is manufactured by the following procedure.

That is, first, as shown in FIG. 4, a first dust seal 24 is fitted on the inner peripheral side of the inner ring 21, and separately from this, as shown in FIG. The second dust seal 27 is fitted on the circumferential side. Then
As shown in FIG. 6, a bearing 25 is provided on the inner peripheral side of the inner ring 21.
With the bearing set, the bearing retainer ring 26 is fitted.

[0004]

Therefore, according to the above-mentioned conventional manufacturing method, since the fitting process is required three times to manufacture one center bearing support, it takes a lot of time and labor for manufacturing. There is a problem that the fitting jig of is required.

[0005]

In view of the above points, the present invention has been devised to solve the problems found in the above-mentioned prior art, and in order to achieve this object, it is set forth in claim 1. As described above, in the center bearing support in which the first seal, the bearing, the second seal, and the bearing pressing ring are provided on the inner peripheral side of the inner ring, the inner step is provided with an annular step portion, and the first and second Each of the seals is provided with an outward flange, and the flange of the first seal is sandwiched between the step portion and the bearing, and the flange of the second seal is provided between the bearing and the bearing retainer ring. Providing center bearing support that is characterized by being sandwiched.

According to a second aspect of the present invention, there is provided a method for manufacturing a center bearing support in which a first seal, a bearing, a second seal and a bearing retainer ring are provided on an inner peripheral side of the inner ring. Steps are provided and outward flanges are provided on the first and second seals, respectively, and the first seal, the bearing, and the second seal are formed by positioning the step on the inner peripheral side of the inner ring. The seal and the bearing retainer ring are fitted at the same time, the flange of the first seal is sandwiched between the step and the bearing with the fitting, and the flange of the second seal is fitted to the bearing and the bearing. Provided is a method of manufacturing a center bearing support, which is characterized in that it is sandwiched between presser rings.

[0007]

If the structure shown in claim 1 is manufactured as described in claim 2, only one fitting process is required to manufacture one center bearing support.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

As shown in FIG. 1, an inner ring 1 and an outer ring 2 both of which are made of metal are connected via an elastic body 3 made of a rubber-like elastic material having a bellows shape. The first seal 4, the bearing 5, the second seal 6 and the bearing retainer ring 7 are axially fitted in series from the left in the figure. That is, first, the inner ring 1 is provided with an annular step portion 1a. Further, the metal mounting rings 4a and 6a of the first and second seals 4 and 6 are provided with outward flanges 4 respectively.
b and 6b are provided. The flange 4a of the first seal 4 is sandwiched between the step portion 1a and the outer race 5a of the bearing 5, and the flange 6b of the second seal 6 is interposed between the outer race 5a of the bearing 5 and the bearing retainer ring 7. Is caught in.

The center bearing support having the above structure is manufactured by the following procedure. That is, first, the inner ring 1
The inner ring 1 is provided with an annular step portion 1a in the process of molding, and the mounting rings 4a, 6a are respectively provided with outward flanges 4 in the process of molding the first and second seals 4, 6.
b and 6b are provided. Then, as shown in FIG. 2, the inner ring 1 is fitted to the lower fitting jig 8, the first seal 4 and the bearing 5 are set between the fitting jig 8 and the inner ring 1, and The second seal 6 and the bearing retainer ring 7 are fitted to the fitting jig 9, and from this state shown, the step portion 1a is positioned on the inner peripheral side of the inner ring 1 for positioning the first seal 4, the bearing 5, and the second The seal 6 and the bearing retainer ring 7 of the first seal 4 are simultaneously fitted, and the flange 4 of the first seal 4 is fitted with this fitting.
b is sandwiched between the step portion 1a and the outer race 5a of the bearing 5, and the flange 6b of the second seal 6 is attached to the outer race 5a of the bearing 5 and the bearing retainer ring 7.
Clap in between. Therefore, according to this method, it is possible to complete the fitting process only once to manufacture one center bearing support, and accordingly it is possible to reduce the time and effort required for manufacture. The fitting jigs 8 and 9 are also shown in FIG.
There should be one set shown in.

[0011]

The present invention has the following effects. That is, if the structure having the structure described in claim 1 is manufactured as described in claim 2, it is possible to complete the fitting process only once to manufacture one center bearing support. And the number of required fitting jigs can be reduced.

[Brief description of drawings]

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

FIG. 2 is an explanatory view showing a procedure of a method of manufacturing the center bearing support according to the embodiment of the present invention.

FIG. 3 is a half cutaway view of a center bearing support according to a conventional example.

FIG. 4 is an explanatory view showing a procedure of a method of manufacturing a center bearing support according to a conventional example.

FIG. 5 is an explanatory view showing a procedure of a method of manufacturing a center bearing support according to a conventional example.

FIG. 6 is an explanatory view showing a procedure of a method of manufacturing a center bearing support according to a conventional example.

[Explanation of symbols]

 1 Inner ring 1a Step part 2 Outer ring 3 Elastic body 4 First seal 4a, 6a Mounting ring 4b, 6b Flange 5 Bearing 5a Outer race 6 Second seal 7 Bearing retaining ring 8, 9 Fitting jig

Claims (2)

[Claims] 1. A center bearing support provided with a first seal (4), a bearing (5), a second seal (6) and a bearing retainer ring (7) on the inner peripheral side of the inner ring (1), An annular step (1a) on the inner ring (1)
With said first and second seals (4)
Outer flanges (4b) and (6b) are provided on (6) respectively, and the flange (4b) of the first seal (4) is sandwiched between the step (1a) and the bearing (5). A center bearing support characterized in that a flange (6b) of the second seal (6) is sandwiched between the bearing (5) and the bearing retainer ring (7). 2. Manufacturing of a center bearing support provided with a first seal (4), a bearing (5), a second seal (6) and a bearing retainer ring (7) on the inner peripheral side of the inner ring (1). In the method, the inner ring (1) is provided with an annular step (1a) and the first and second seals (4) and (6) are respectively provided with outward flanges (4b).
(6b) is provided, and the first seal (4), the bearing (5), the second seal (6) and the step (1a) are positioned on the inner peripheral side of the inner ring (1) for positioning. The bearing retainer ring (7) is fitted at the same time, and the flange (4b) of the first seal (4) is sandwiched between the step portion (1a) and the bearing (5) by the fitting. A method of manufacturing a center bearing support, characterized in that the flange (6b) of the second seal (6) is sandwiched between the bearing (5) and the bearing retainer ring (7).