JPS609074Y2 - Propeller shaft support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a propeller shaft support device.

Conventionally, as a propeller shaft support device using a torque tube, the device shown in FIGS. 1 and 2 is known.

One end of the torque tube 1 is fixed to a differential case (not shown), and the other end extends into a holder 3 that is integrally held by a frame (not shown).

Further, the propeller shaft 7 passes through the inside of the torque tube 1 and has one end connected to the differential side (on the right side in the figure) and the other end connected to the transmission side via a universal joint 8.

On the other hand, the torque tube 1 is elastically held on the holder 3 side via a first elastic member 9 made of a rubber-like elastic material that surrounds the outer peripheral surface of the torque tube 1.

This first elastic member 9 is supported by two supporting bones 10 extending in a V-shape.

Furthermore, a bearing 11 is fitted on the outer peripheral surface of the propeller shaft 7 near the universal joint 8.
1 is elastically supported at its outer peripheral surface by a tubular second elastic member 13 held by a holder 3.

The conventional product having the above-mentioned configuration has the following problems.

When the weight of the vehicle changes or vibration occurs in the vehicle, one end of the torque tube 1 is integrally fixed to the differential case, and the other end is elastically held by the first elastic member 9. 1 performs a rocking motion centering on the differential case.

On the other hand, since the propeller shaft 7 is elastically held on the holder 3 side via the second elastic member 13 regardless of the movement of the torque tube 1, the central axis of the propeller shaft 7 and the central axis of the torque tube In extreme cases, the two members may come into contact with each other, causing problems such as noise and damage.

The present invention solves the problems of the conventional products mentioned above, and the present invention will be explained in detail below with reference to FIGS. 3 and 4.

One end of the torque tube 1 is fixed to a differential case (not shown), and the other end extends into a holder 3 that is integrally held by a frame (not shown).

Further, the propeller shaft 7 passes through the inside of the torque tube 1 and has one end connected to the differential side (on the right side in the figure) and the other end connected to the transmission side via the universal joint 8.

On the other hand, the torque tube 1 is elastically held on the holder 3 side via a first elastic member 9 made of a rubber-like elastic material that surrounds the outer peripheral surface of the torque tube.

This first elastic member 9 is supported by three supporting bones 10 extending in a Y-shape.
A void 12 is provided in each.

Further, a connecting portion 15 is provided that extends in a cylindrical shape from the inner circumferential side of the first elastic member 9 toward the universal joint 8 side, and a bearing 11 is provided on the outer circumferential surface of the propeller shaft 7 near the universal joint 8. The outer peripheral surface of the bearing 11 is elastically supported by a second elastic member 13 made of a rubber-like elastic material via a flexible elastic member extending from the connecting portion 15.

The second elastic member 13 is arranged in the same layer within a connecting portion 15 having a metal ring extending in the axial direction from the first elastic member.

In addition, for the purpose of increasing strength, a metal ring with an L-shaped cross section is embedded in the second elastic member 13, and a cylindrical metal ring is embedded in the connecting portion 15 and the first elastic member, respectively. .

Although the first elastic member 9 and the second elastic member 13 have been shown to be manufactured by a single vulcanization process, the first elastic member 9 and the second elastic member 13 can be manufactured separately and then machined. Alternatively, the second elastic member 13 may be connected to the first elastic member 9 via the torque tube 1.

That is, as long as the elastic member 13 follows the movement of the torque tube 1, the present invention is not limited to the above embodiment.

As a result of the present invention having the above-described configuration, the following effects can be expected.

That is, in the present invention, the second elastic member 13 that connects the propeller shaft 7 to the torque tube 1 side via the bearing 11 is placed in the same layer within a metal ring extending in the axial direction from the first elastic member 9. The torque tube and propeller are arranged and integrally connected to the metal ring via the flexible elastic member 16, so that the torque tube and propeller that are generated due to changes in vehicle weight or vibrations in the vehicle are prevented. Relative displacement in the axial direction and minute relative displacement in the radial direction of the shaft can be absorbed by deformation of the flexible elastic member, and for relatively large relative displacement in the radial direction, the outer periphery of the second elastic member It comes into contact with the inner periphery of the connecting portion and allows the propeller shaft to follow the swinging of the torque tube.

Therefore, direct contact between the torque tube and the propeller shaft can be effectively avoided.

Furthermore, in the case of the embodiment shown in FIG. 3, the first elastic member 9 and the second elastic member 13 can be formed into one body in a single vulcanization process, so the manufacturing cost is low. becomes.

Further, a bearing seal lip 1 is attached to the second elastic member 13.
By integrally forming 4, the overall structure can be simplified.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a propeller shaft support device according to the prior art, FIG. 2 is a sectional view taken along line II in FIG. 1, and FIG. 3 is a sectional view of a propeller shaft support device according to the present invention. FIG. 4 is a sectional view taken along the line ■-■ in FIG. 3. 1...Torque tube, 3...Holder, 7
...Propeller shaft, 8...Universal joint, 9...First elastic member, 10...
Support bone, 11...Bearing, 12...
-Gap, 13...Second elastic member, 14...
. . . Seal lip for bearing, 15 . . . Connection portion, 16 . . . Flexible elastic member.

Claims (1)

[Claims for Utility Model Registration] 1 One end is fixed to the differential case side, the other end extends into a holder 3 that is integrally held on the frame, and is held in the holder 3 via a first elastic member 9. The propeller shaft 7 extends through the torque tube 1 and is connected to the differential side at one end and the transmission side at the other end, and is fitted onto the propeller shaft 7. In a propeller shaft support device in which a bearing 11 is supported by a second elastic member 13 disposed on the other end side of the torque tube 1, the second elastic member 13 is supported by the first elastic member 9. A propeller shaft support characterized by being coaxially disposed within a connecting portion 15 having a metal ring extending in the axial direction from the center and integrally connected to the metal ring via a flexible elastic member 16. Device. 2. The propeller shaft support device according to claim 1, wherein the first elastic member 9 and the second elastic member 13 are integrally formed from a rubber material. 3. The propeller shaft support device according to claim 1, wherein the second elastic member 13 is a thin annular body.