JPH0527722Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an elastic support device in which an elastic support means is inserted between a support and a shaft that are concentrically combined with each other.

(Problem to be solved by the invention) The invention solves the problem that a radial load of several tens of tons is applied between the abutment and the shaft, which are concentrically combined with each other, and
In a mechanical device that requires relative movement in the radial and axial directions and relative rotation of several degrees, the mechanical device can withstand the radial load and absorb the relative displacement and rotation in the radial and axial directions. This is to prevent damage.

(Means for Solving the Problems) In consideration of the above-mentioned problems, the present invention provides an outer ring that has a cylindrical shape and is fixed to a support base, and a cylindrical outer ring that is concentric with the outer ring. and connected to the outer ring via an elastic bushing molded with a rubber-like elastic material, and inserted so that the shaft inserted into the abutment can be rotated relative to the shaft and relatively movable in the axial direction. It shows an inner ring and a roughly L-shaped cross-sectional shape,
a stopper coupled to the shaft so as to be relatively rotatable while maintaining a radial clearance between the stopper and the abutment;
Made of a rubber-like elastic material in a ring shape,
A side stopper configured to maintain a clearance with the circumferential surface of the shaft, and a washer-like member baked on both ends in the axial direction and supported by the side surface of the inner ring and the side surface of the stopper. It is.

(Function) In the elastic support device having the above configuration,
When a radial load is applied between the abutment and the shaft, the elastic bush deforms elastically and absorbs the radial displacement between the abutment and the shaft, and the radial load becomes significantly large. In this case, stoppers placed on both sides of the elastic support means in the axial direction are supported by the inner surface of the abutment to prevent damage to the elastic bushing due to excessive compressive deformation, and prevent relative axial displacement or relative movement between the abutment and the shaft. In the event of rotation, the relative slippage that occurs between the shaft and the inner ring prevents excessive stress from being applied to the elastic bushing, and the side stopper located between the inner ring and the stopper The elastic deformation of absorbs the relative axial displacement between the shaft and the inner ring.

(Embodiment) In the embodiment shown in FIG. 1, an outer ring 3 having an elastic bushing 6 molded from a rubber-like elastic material baked on the inside is fitted and fixed to a support 1, and the elastic bushing 6 is A slide bush 5 baked on the outside and made of bearing alloy or low-friction resin material.
The shaft 2 is inserted into the inner ring 4 into which the shaft 2 is inserted while maintaining relative movement and rotation in the axial direction, and is formed into an annular body with a substantially L-shaped cross section. A stopper 8 forming a clearance 9 to
is attached to the shaft 2 via cylindrical roller bearings 10 on both sides of the inner ring 4, and is formed into a slightly thin annular body using a rubber-like elastic material, and washer-like members are baked on both ends. A side stopper 11 is disposed with a washer-like member supported by the side surface of the inner ring 4 and the side surface of the stopper 8.

In the embodiment described above, when a radial load is applied between the abutment 1 and the shaft 2, the elastic bush 6 is elastically compressed to absorb the radial displacement between the abutment 1 and the shaft 2, When the radial load further increases, the stopper 8 is supported by the inner surface of the abutment 1 to prevent excessive deformation from occurring in the elastic bushing 6, and prevent relative axial displacement or displacement between the abutment 1 and the shaft 2. When relative rotation occurs, the shaft 2 and the inner ring 4 with the stride bush 5 interposed therebetween elastically deform the side stopper 11 to cause relative sliding, and the elastic bush 6
This prevents excessive stress from being applied to the stopper 8.
When the support 1 and the shaft 2 rotate relative to each other while the stopper 8 and the shaft 2 are in contact with the support 1, the cylindrical roller bearing 10 causes the stopper 8 and the shaft 2 to rotate relative to each other.

(Effects of the invention) As described above, the elastic support device of the present invention has an elastic bushing formed of a rubber-like elastic material, and an outer ring in which an elastic bushing is baked inside and is fitted and fixed to a support base. The shaft is inserted into the inner ring, which is baked on the outside, while maintaining the possibility of relative movement in the axial and circumferential directions. By having a structure in which stoppers that can rotate relative to each other are arranged on both sides of the inner ring, when a radial load is applied between the abutment and the shaft, the elastic deformation of the elastic bushing is caused by the abutment and the shaft. When the radial load increases, the stopper is supported by the inner surface of the abutment to prevent damage to the elastic bushing due to excessive stress, and prevents relative movement or relative displacement in the axial direction between the abutment and the shaft. When rotation occurs,
Sliding between the inner ring and the shaft prevents stress from occurring in the elastic bushing.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention. 1... Abutment, 2... Shaft, 3... Outer ring, 4... Inner ring, 5... Slide bushing, 6... Elastic bushing, 8... Stopper, 9... Clearance, 10
...Cylindrical roller bearing, 11...Side stopper.

Claims (1)

[Scope of utility model registration request] An outer ring 3 having a cylindrical shape and fixed to the support base 1
is formed into a cylindrical shape, is combined concentrically with the outer ring 3, is connected to the outer ring 6 via an elastic bushing 6 made of a rubber-like elastic material, and is inserted into the abutment 1. an inner ring 4 inserted so as to be relatively rotatable about the shaft 2 and relatively movable in the axial direction;
A stopper 8 having a substantially L-shaped cross-sectional shape and coupled to the shaft 2 so as to be relatively rotatable while maintaining a radial clearance 9 between the stopper 8 and the support 1, and a ring-shaped stopper 8 made of a rubber-like elastic material. A washer-like member made of aluminum and sintered at both ends in the axial direction while maintaining a clearance with the circumferential surface of the shaft 2 is disposed so as to be supported by the side surface of the inner ring 4 and the side surface of the stopper 8. An elastic support device having a side stopper 11.