JPH1016586A - Propeller shaft bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a propeller shaft bearing device which is easy to manufacture without requiring high precision parts and has excellent assembling workability. SOLUTION: In a device for rotatably supporting a propeller shaft for transmitting a driving force of an internal combustion engine to a driving wheel side, a bearing 7 for rotatably supporting the propeller shaft, and an inner part for fitting the bearing 7 from the outside. The bearing holding member 10 composed of the ring 11, the outer ring 13 concentric therewith, and the elastic body 12 integrally interposed between the outer ring 13 and the inner ring 11, and the outer ring 13 of the bearing holding member 10 A mounting bracket 15 to which an arc portion 15a is fitted and supported and an arm portion 15b extending from the arc portion 15a is attached to the vehicle body side, and a projection 13a formed on an outer peripheral surface of an outer ring 13 of the bearing holding member 10 so as to protrude.
Into the hole 15c formed in the arc portion 15a of the mounting bracket 15.
A propeller shaft bearing device that fits into the mounting member and fixes the bearing holding member 10 to the mounting bracket 15.

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 rotatably supporting a propeller shaft, which is a drive transmission means of an automobile.

[0002]

2. Description of the Related Art Generally, a propeller shaft connects a drive unit including an internal combustion engine in front of a vehicle body and a differential device for rotating a rear wheel at a rear portion of the vehicle body to transmit power. In order to cope with relative fluctuations, a universal joint is interposed in the front and rear, and is rotatably supported on the vehicle body via bearings, and the bearings are supported by elastic members to support rotation. Vibration is absorbed to prevent noise.

In such a propeller shaft support structure, for example, in a conventional example described in Japanese Utility Model Publication No. Sho 63-30572, an annular bearing holding member for supporting a bearing is interposed between an inner ring and an outer ring. The inner ring supports the propeller shaft via a bearing, the outer ring is fitted into the annular case of the support member, and the support member is fixed to the vehicle body side.

[0004] A flexible portion of a bearing holding member that supports the bearing absorbs vibrations caused by rotation of the propeller shaft, thereby preventing generation of noise. In addition, there is an example in which a member supporting a bearing holding member sandwiches an outer ring of the bearing holding member between two members and supports the end by welding (Japanese Utility Model Publication No. 7-336).

[0005]

However, in the former example,
Since the outer ring of the bearing holding member is press-fitted into the annular case of the support member, high accuracy of parts is required for the outer ring and the annular case in order to reliably support the bearing holding member, which causes a cost increase.

In the latter example, since the outer ring of the bearing holding member is sandwiched between the two members, very high precision of parts is not required. However, since the two members are welded to each other with the outer ring sandwiched therebetween, welding is performed. Heat may affect the flexible portion of the bearing holding member, and the welding point needs to be positioned, resulting in poor workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a propeller shaft supporting device which is easy to manufacture and has excellent assembling workability without requiring high precision parts. Is to offer.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an apparatus for rotatably supporting a propeller shaft for transmitting a driving force from an internal combustion engine to driving wheels. , A bearing holding member comprising an inner ring for fitting the bearing from the outside, an outer ring concentric with the inner ring, and an elastic body integrally disposed between the outer ring and the inner ring. And an outer surface of the outer ring of the bearing holding member, wherein the outer ring of the bearing holding member is fitted and supported by an arc portion from the outside, and an arm extending from the arc portion is attached to the vehicle body. A propeller shaft bearing device for fixing the bearing holding member to the mounting bracket by fitting a projection formed on the mounting bracket into a hole formed in an arc portion of the mounting bracket; It was.

[0009] Since the projection of the outer ring of the bearing holding member is fitted into the hole of the arc portion of the mounting bracket to fix the bearing holding member to the mounting bracket, the bearing holding member and the mounting bracket are not required to have high component precision and can be manufactured. It is easy, and the assembling operation is simple only by fitting the projection into the hole, and the cost can be reduced.

[0010] According to the propeller shaft bearing device of claim 1, wherein the projection is formed by subjecting the outer ring to burring, the projection can be easily formed on the outer ring.

3. A propeller shaft bearing device according to claim 1, wherein said projection penetrates through said hole, and an end of said projection is developed and swaged to fix said bearing holding member to said mounting bracket. Thus, the bearing holding member can be easily and reliably fixed to the mounting bracket.

According to the propeller shaft bearing device according to claim 1 or 2, wherein the plurality of protrusions and the plurality of holes are formed corresponding to each other, the bearing holding member is more securely fixed to the mounting bracket. can do.

5. The propeller shaft bearing device according to claim 4, wherein the arc portion of the mounting bracket has a notch extending from a side edge thereof to the hole in all or a part of the plurality of holes. By using the notches to fit the projections into the plurality of holes, the work can be performed smoothly, and the bearing holding member can be easily attached to the mounting bracket.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a propeller shaft bearing device that is a part of a power transmission mechanism of a motor vehicle (FR vehicle or 4WD vehicle).

A joint member 3 connects the first propeller shaft 1 on the front side and the second propeller shaft 2 on the rear side, and the joint member 3 includes a shaft stub 4 and a second stub 4 integrally connected to the first propeller shaft 1. The yoke stub 5 connected to the propeller shaft 2 via a cross joint is integrally welded to the base 4a of the shaft stub 4.

A bearing 7 is fitted on the outer peripheral surface of the base 4 a of the shaft stub 4, and seal members 8 and 9 are fitted around the bearing 7. An inner ring 11 is fitted around the outer periphery of the bearing 7 and the seal members 8 and 9, and a bearing holding member 10 is provided around the bearing 7.

The bearing holding member 10 includes an inner ring 11 and an elastic member 12 whose inner periphery is baked on the inner ring 11 and which is curved and extends in the outer peripheral direction. The inner ring 11 and the outer ring 13 are located concentrically. The outer ring 13 of the bearing holding member 10 is supported by a vehicle body mounting bracket 15.

The mounting bracket 15 is formed by processing a strip-shaped steel plate. As shown in FIGS. 2 and 3, a semicircular arc portion 15 is formed.
a and both ends thereof extend outward in the diameter direction to form arms 15b, 15b, and three circular holes 15c are formed in the circular arc portion 15a so as to be evenly distributed in the circumferential direction of the semicircular arc, Of the two circular holes 15c, a cutout 15d is formed from one side edge.

On the other hand, the outer ring 13 of the bearing holding member 10 has an axial width substantially equal to that of the mounting bracket 15, and three projections 13a corresponding to the three circular holes 15c are formed in a radial direction by burring from the inside. The protrusion is formed. Protrusion 13a
Has a cylindrical shape, and its protruding length is a length that passes through the circular hole 15c.

When the arc 15a of the mounting bracket 15 is fitted into the outer ring 13 of the bearing holding member 10, the mounting bracket
A central projection 15a of the outer ring 13 corresponding to the central circular hole 15c of 15
The notches 15d, 15d on the sides are aligned with the corresponding projections 13a,
Three projections 13a respectively corresponding to the three circular holes 15c can be fitted so that the 13a passes. By using the notches 15d, 15d as described above, it is possible to easily insert the notches.

The protrusion 13a fitted into the circular hole 15c is
c and protrudes outward, and the protruding end is developed and crimped as shown in FIG. In this way, the three projections 13a of the outer ring 13 of the bearing holding member 10 are penetrated into the arc portion 15a of the mounting bracket 15, and are fixed integrally (see FIGS. 1 and 5). Mounting bracket 15 is arm 15
At b and 15b, they are attached to the vehicle body.

As described above, the bearing holding member 10 is inserted into the circular hole 15c of the mounting bracket 15 in the circular hole 15c.
Since the support 13a is fixedly supported by caulking, high precision of the parts is not required for the bearing holding member 10 and the mounting bracket 15, and the assembling operation is simple, and thus the cost can be reduced.

The projection 13a for caulking can also be formed by burring, so that manufacture is easy. Protrusion 13a
The bearing support members 10 are securely fixed because they are evenly distributed in three places and fitted and caulked in the corresponding three circular holes 15c of the mounting bracket 15.

As described above, since the structure is simple and no welding is performed, the elastic body 12 is not affected by heat and the performance is not deteriorated.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of the bearing device.

FIG. 3 is a rear view of the same.

FIG. 4 is a sectional view of a main part showing a state of caulking by an engagement piece.

FIG. 5 is a rear view of the bearing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st propeller shaft, 2 ... 2nd propeller shaft, 3 ... Joint member, 4 ... Shaft stub, 5 ... Yoke stub, 7 ... Bearing, 8, 9 ... Seal member, 10
... Bearing holding member, 11 ... Inner ring, 12 ... Elastic body, 13 ... Outer ring, 15 ... Mounting bracket.

Claims (5)

[Claims] An apparatus for rotatably supporting a propeller shaft for transmitting a driving force from an internal combustion engine to driving wheel sides, a bearing for rotatably supporting the propeller shaft, and an inner ring for fitting the bearing from outside. And a concentric outer ring and a bearing holding member made of an elastic body integrally interposed between the outer ring and the inner ring, and an outer ring of the bearing holding member is fitted and supported by an arc portion from the outside. A mounting bracket having an arm extending from the arc portion attached to the vehicle body side, a projection formed on an outer peripheral surface of an outer ring of the bearing holding member, a hole formed in the arc portion of the mounting bracket. Wherein the bearing holding member is fixed to the mounting bracket by being fitted into the mounting bracket. 2. The propeller shaft bearing device according to claim 1, wherein the projection is formed by subjecting the outer ring to burring. 3. The propeller according to claim 1, wherein the projection penetrates the hole, and an end of the projection is developed and swaged to fix the bearing holding member to the mounting bracket. Shaft bearing device. 4. The propeller shaft bearing device according to claim 1, wherein a plurality of said projections and said holes are formed corresponding to each other. 5. The propeller shaft according to claim 4, wherein the arc portion of the mounting bracket has a notch extending from the side edge to all or a part of the plurality of holes to reach the holes. Bearing device.