JPS62163341U - - Google Patents

Description

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention. FIG. 1 is a cross-sectional view of the rubber sleeve before being press-fitted into the outer metal fitting, FIG. 2 is a longitudinal cross-sectional view of the rubber sleeve, and FIG.
The figures are longitudinal cross-sectional views taken in different directions. FIG. 4 is a cross-sectional view of the rubber bushing press-fitted into the outer metal fitting, and FIG. 5 is a vertical cross-sectional view thereof. FIG. 6 is a perspective view of an automobile suspension system in which a rubber bushing is used, FIG. 7 is a cross-sectional view of a conventional rubber bushing, and FIG. 8 is a cross-sectional view of another conventional rubber bushing. In the figure, 1 is a central metal fitting, 2 is an outer metal fitting, 20 is an inner peripheral surface, 21 is a central hole, 3 is a rubber sleeve, 31 is a first arc-shaped part, 32 is a second arc-shaped part, and 33 is a third arc-shaped part , 34 is a first arcuate portion, and 35 is a gap.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cylindrical central metal fitting, an outer metal fitting having an inner peripheral surface coaxially with the central metal fitting and covering the central metal fitting, the outer peripheral surface of the central metal fitting and the outer metal fitting. and a rubber sleeve disposed in the space between the inner circumferential surface of the central fitting, and the rubber sleeve with the outer fitting removed has an inner circumferential diameter that is the same as the outer circumferential diameter of the central fitting. having a cylindrical shape and consisting of a first arcuate part, a second arcuate part, a third arcuate part, and a fourth arcuate part that are continuous in the circumferential direction and have an arcuate cross-sectional shape with different outer circumferential diameters, and the first arcuate part the second arcuate portion having an outer circumferential diameter substantially the same as an inner circumferential diameter of the outer metal fitting, and located on both sides of the first arcuate portion;
The fourth arcuate portion is substantially larger than the inner circumferential diameter of the outer metal fitting, and the fourth arcuate portion is located on the opposite side of the first arcuate portion, and the second arcuate portion and the fourth arcuate portion are located on both sides. The outer circumferential diameter of the third arcuate portion is set to be substantially smaller than the inner circumferential diameter of the outer metal fitting, and the rubber sleeve is placed in the space between the outer circumferential surface of the central metal fitting and the inner circumferential surface of the outer circumferential diameter. By being press-fitted, the second arcuate portion and the fourth arcuate portion are strongly pressurized in the radial direction, and the first arcuate portion is substantially not compressed and is connected to the outer circumferential surface of the inner fitting and the inner portion of the outer fitting. It has a structure in which a certain gap is formed between the outer circumferential surface of the third arcuate part and the inner circumferential surface of the outer metal fitting, filling the space between the third arcuate part and the inner circumferential surface of the outer metal fitting. A rubber bushing characterized in that it has different spring characteristics depending on the forward and reverse directions of the acting direction connecting the third arcuate portion. (2) A rubber bushing according to claim 1 of the utility model registration claim, which is provided in a vehicle body connection part of an A-type control arm arranged in the lateral direction of the vehicle body, and is used in an automobile suspension system with its axis facing in the longitudinal direction of the vehicle body. .