JPH05155262A - Center bearing support of propeller shaft for vehicle - Google Patents

Abstract

PURPOSE:To prevent the slippage of a stopper and provide the center bearing support of a propeller shaft for a vehicle, which facilitates stopper mounting work. CONSTITUTION:A slit is formed at a part of a stopper 6 made of elastic material formed in a body apart an elastic member 4 in an arc, and a projection 8 is formed on the internal or external periphery of this stopper 6, and a recessed section to which the projection 8 is fitted to the elastic member 4 of the part at which the stopper 6 is provided.

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 as a vibration isolation support device for a center bearing that supports an intermediate portion of a vehicle propeller shaft.

[0002]

2. Description of the Related Art A conventional center bearing support is, as shown in FIG. 7, an annular cylindrical member 100 for supporting a center bearing and a fixing member 101 attached to a vehicle body or the like.
And the elastic member 102 having a substantially V-shaped radial cross-section.
A pair of left and right are provided in the axial direction, and a stopper 103 is provided in the middle of the pair of left and right elastic members 102. The stopper 103 is made of an annular elastic material formed separately from the elastic member 102. The elastic member 102 is formed of an elastic material suitable for small-amplitude vibration isolation of the propeller shaft, and the stopper 103 is formed of an elastic material that absorbs the stopper repulsive force at the time of large amplitude and has a large cushioning effect. Further, the stopper 103 is attached by the fixing member 10
Before attaching the elastic member 102 to 1, the annular stopper 103 is fitted with one of the V-shaped portions being horizontally extended.

[0003]

In the conventional stopper,
As described above, the annular stopper 1 is attached to the elastic member 102.
03 is required to be fitted, and the stopper 103 is merely retained by the intermediate portion of the elastic member by a frictional force even after the fitting is performed. There was a risk of damage. In addition to such a problem of positional deviation, the stopper 103
It was also difficult to fit the elastic member 102 in the middle of the elastic member 102.

Therefore, the present invention provides a center bearing support for a propeller shaft for a vehicle, which prevents the stopper from being displaced and allows the stopper to be easily attached to an appropriate position, thereby improving workability and mass productivity. To aim.

[0005]

In order to achieve the above object, the present invention has a radial cross-sectional shape between a bearing for rotatably supporting a vehicle propeller shaft and a fixing member attached to a vehicle body or the like. For vehicles in which elastic members having substantially V-shaped portions are provided in a pair in the axial direction on either the left or right side or the left or right side, and a stopper is provided on the bearing side or the fixing member side of the elastic member so as to face the fixing member or the bearing. In the center bearing support of a propeller shaft, a slit is formed in a part of a stopper made of an elastic material formed separately from the elastic member to form an arc shape, and a convex portion is formed on the inner peripheral surface or the outer peripheral surface of the stopper. In addition to the above, the elastic member at the place where the stopper is provided is formed with the concave portion into which the convex portion fits.

[0006]

According to the present invention, since a slit is formed in a part of the stopper to mount the stopper, an arc-shaped stopper is covered from the outside of the elastic member with the diameter of the stopper expanded, and the stopper is placed at a predetermined position. It suffices to position the stopper and fit the convex portion of the stopper into the concave portion of the elastic member. Therefore,
The problem of positional deviation does not occur, the mounting becomes easy, and the workability and mass productivity are improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIG. 1, a propeller shaft 1 is supported by a bearing 2, and the bearing 2 is press-fitted into a cylindrical member 3. On the outer peripheral surface of the cylindrical member 3, an elastic member 4 having a substantially V-shaped cross-section in the radial direction is formed.
A left and right pair are provided in the axial direction. Therefore, the entire radial cross-sectional shape is formed in a shape in which the C-shape lies sideways. The elastic member 4 is connected to a fixing member 5 attached to a vehicle body or the like by a ring. A stopper 6 made of an elastic material, which is formed separately from the elastic member 4, is attached to the bearing 2 side of the elastic member 4, in the present embodiment, between the pair of left and right elastic members 4. A slit 7 (see FIG. 3) is formed in a part of the stopper 6, and is formed in an arc shape as a whole. A convex portion 8 is formed on the inner peripheral surface of the stopper 6, and the convex portion 8 fits into the concave portion 9 of the elastic member 4.

FIG. 2 shows only the elastic member 4, and has a pair of substantially radial V-shaped cross sections on both sides in the axial direction. The elastic member 4 is formed into a cylindrical shape as a whole,
The cylindrical member 3 and the bearing 2 are fitted into the central hole 10. The cylindrical member 3 and the elastic member 4 are press-fitted.
There are V-shaped portions at both ends of the outer peripheral surface of the cylinder.

FIG. 3 shows the stopper 6 and a slit 7 in a part thereof.
Is formed. In addition, a hole 11 for inspection is partially formed, and is separated by the two holes 11 and the slit 7.
The convex portions 8 are formed at the respective points. FIG. 4 shows AA of FIG.
A line section is shown, and the convex portion 8 has a trapezoidal sectional shape.
The hole 11 is for checking the balance of the propeller shaft 1 and for supporting the shaft 1 directly from the outside without using the elastic member 4 after the mounting of the center bearing support and before performing the balance test.

A second embodiment shown in FIG. 5 shows an elastic member 4 having a portion having a substantially V-shaped radial cross section only on one side in the axial direction. The bearing 2 of this elastic member 4 is shown.
A stopper 6 is attached to the side portion in the same manner as in the first embodiment.

In the third embodiment shown in FIG. 6, the stopper 6 is provided at the position of the elastic member 4 on the radially outer side, that is, the fixing member 5.
The example attached to the elastic member 4 on the side is shown.

In any of the embodiments described above, the convex portion 8
The shape of the recess 9 is not limited to that shown in the figure. If the convex portion 8 and the concave portion 9 are each formed with a taper, the stopper 6 can be further prevented from coming off. Resists and is effective in reducing vibration.

[0014]

As described above, according to the present invention, a slit is formed in a part of a stopper made of an elastic material formed separately from the elastic member to form an arc, and the stopper is formed. A convex part is formed on the inner or outer peripheral surface, and a concave part that fits the convex part is formed on the elastic member at the place where the stopper is provided. To be done. Further, since the stopper is formed with a slit, it is possible to easily attach the stopper to a predetermined attaching position of the elastic member in a state where the slit is expanded and the diameter of the stopper is enlarged, and workability and mass productivity are improved. ..

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view of only an elastic member.

FIG. 3 is a sectional view of only a stopper.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a sectional view showing a second embodiment.

FIG. 6 is a sectional view showing a third embodiment.

FIG. 7 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Propeller shaft 2 Bearing 4 Elastic member 5 Fixing member 6 Stopper 7 Slit 8 Convex portion 9 Recessed portion

Claims (1)

[Claims] 1. A pair of left and right elastic members having axially substantially V-shaped cross-sections between a bearing for rotatably supporting a vehicle propeller shaft and a fixed member attached to a vehicle body or the like. Alternatively, in the center bearing support of the propeller shaft for a vehicle, which is provided on either the left or right side and is provided with a stopper on the bearing side or fixed member side of the elastic member so as to face the fixed member or the bearing, it is molded separately from the elastic member. A slit is formed in a part of the stopper made of the elastic material and formed in an arc shape, and a convex portion is formed on the inner peripheral surface or the outer peripheral surface of the stopper, and the convex portion is formed on the elastic member where the stopper is provided. A center bearing support for a propeller shaft for a vehicle, which is formed with a recess for fitting.