JPS6374373U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of a vibration-proof rubber bushing according to an embodiment of the present invention, and FIG. 2 is a front view showing an example of a coupling device using this vibration-proof rubber bushing. Figure 3 is a partially cutaway side view of the anti-vibration rubber bushing shown in Figures 1 and 2, and Figure 4 is a partially cutaway side view of the rubber bushing shown in Figures 1 and 2.
FIG. 4 is a partially cutaway front view showing the shape of the rubber elastic body before being press-fitted into the vibration-proof rubber bushing shown in FIGS.
FIG. 5 is a characteristic diagram showing the load-deflection characteristics of the anti-vibration rubber bushing shown in FIGS. 1 to 3, and FIG. 6 is a front view showing the anti-vibration rubber bushing, which is another embodiment of the present invention, together with the coupling device. FIG. 7 is a diagram showing an example of a connecting device to which the present invention is applied. FIG. 8 is a side sectional view of a vibration-proof rubber bushing conventionally used in the connection device, and FIG.
The figure is an explanatory diagram for explaining a malfunction of the vibration-proof rubber bushing shown in FIG. 8. 10: Connection device, 12: Trolley, 14: Vehicle body, 2
0: Connection link, 24: Anti-vibration rubber bushing, 26
: Rubber elastic body, 28: Shaft body, 42: Flange, 4
4: groove, 46: urethane elastic material.

Claims (1)

[Claims for Utility Model Registration] (1) A connecting link is interposed between the first connecting body and the second connecting body to be connected to each other, and a metal Anti-vibration rubber bushes having a shaft body made of steel fixed thereto and the rubber elastic body press-fitted into a metal outer cylinder are arranged at both ends of the connecting link so as to be perpendicular to the axial center of the coupling link. A connection in which each shaft portion is fixed to one of the first or second connecting body and the connecting link, and the outer cylinder is respectively fixed to the other, and the two connecting bodies are connected via the vibration-proof rubber bushing and the connecting link. The vibration-isolating rubber bushing of the device is characterized in that the rubber elastic body is divided into two parts in the axial direction with a predetermined gap therebetween, and a disc-shaped flange having a diameter smaller than the inner diameter of the outer cylinder by a certain dimension is inserted in the gap. While being integrally fixed to the shaft body, a thin elastic material is fixed to at least one of the outer peripheral surface of the flange or a portion of the inner peripheral surface of the outer cylinder that faces the outer peripheral surface of the flange, so that the outer peripheral surface of the flange is 1. A vibration-proof rubber bushing for a vehicle coupling device, characterized in that deformation of the rubber elastic body in the radial direction is suppressed by contacting the inner circumferential surface of the outer cylinder via an elastic material. (2) The anti-vibration rubber bushing according to claim 1, wherein the thin elastic material is fixed in a ring shape over the entire circumference of the outer peripheral surface of the flange or the inner peripheral surface of the outer cylinder. (3) A shallow groove is formed in a portion of the inner circumferential portion of the outer cylinder that faces the outer circumferential surface of the flange, and the thin elastic material is embedded in the groove. Anti-vibration rubber bushings described in section.