JPH0221350U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a specific example of an automobile suspension bushing to which the present invention is applied, and FIG. 2 is a cross-sectional view taken along the line shown in FIG. 1. 3 is a cross-sectional view showing an integrally vulcanized molded product constituting the suspension bushing shown in FIG. 1, FIG. 4 is a cross-sectional view of FIG. The figure is a cross-sectional view of FIG. 6 is a cross-sectional view showing a metal sleeve constituting the suspension bush shown in FIG. 1, and FIG. 7 is a cross-sectional view taken in FIG. 6. FIG. 8 is a sectional view showing an integrally vulcanized product of the reinforcing metal fittings and the cushioning rubber block constituting the suspension bush shown in FIG. 1, and is a cross-sectional view in FIG. 9; FIG. 9 is a cross-sectional view of FIG. 8. FIG. 10 is a longitudinal cross-sectional view showing the outer cylindrical metal fitting constituting the suspension bush shown in FIG. 1. 10: Inner cylinder metal fitting, 12: Outer cylinder metal fitting, 14: Rubber elastic body, 18: Metal sleeve, 20: Recess, 22
: Window, 24: Peripheral groove, 25: Communication hole, 26: Stopper fitting, 27: Communication groove, 28: Buffer rubber, 30
: Reinforcement fitting, 34: Inner protrusion, 36: Integrally vulcanized molded product, 38: Flange part, 40: Stepped part, 42:
Buffer rubber block, 44: circumferential edge, 45: recess, 46: elastic body, 50: fluid chamber, 52: orifice passage.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An inner cylindrical metal fitting and an outer cylindrical metal fitting arranged at a predetermined distance on the outside of the inner cylindrical metal fitting are formed by a rubber elastic body interposed between them. The inner and outer cylindrical fittings are connected to each other, and have a structure in which a plurality of fluid chambers, each filled with a predetermined incompressible fluid, are provided in communication with each other through an orifice passage, and A metal sleeve is fixed onto the outer peripheral surface of the rubber elastic body, and at least one of the plurality of fluid chambers is provided on the outer peripheral surface of the rubber elastic body through a window formed in the metal sleeve. A fluid-filled cylindrical mount assembly formed by closing an opening of a recess that opens upward by fitting the outer cylindrical fitting onto the metal sleeve, A reinforcing metal fitting is disposed in the window that is the opening of the recess, and the outer surface of the reinforcing metal fitting is brought into contact with the outer cylindrical metal fitting by means of a support formed at the inner peripheral edge of the window. A buffer rubber block is provided on the inner surface of the reinforcing metal fitting to hold the mount immovably in the circumferential and axial directions in a supported state, and protrudes at a predetermined height toward the fluid chamber and inwardly in the mount radial direction. is integrally formed in a protruding manner so that the relative displacement of the inner cylindrical metal fitting with respect to the outer cylindrical metal fitting when a vibration load is input can be regulated by the contact of the inner cylindrical metal fitting with the buffer rubber block. A fluid-filled cylindrical mount assembly characterized by: (2) A flange portion, which is held by the support portion of the metal sleeve, is provided on the outer peripheral edge of the reinforcing metal fitting, and a flange portion is provided in the center portion of the reinforcing metal fitting, spaced apart from the outer cylindrical metal fitting and radially inward of the mount. By providing an inward protrusion projecting into the inner protrusion and accommodating and arranging a predetermined elastic member in a recess formed in the inward protrusion, the reinforcing fitting can be inserted into the outer cylindrical fitting via the elastic member. Claim (1) which is abutted and supported by
) The fluid-filled cylindrical mount assembly described in ). (3) A groove extending in the circumferential direction is formed in the axial center of the metal sleeve, and the opening of the groove is closed by the outer cylindrical fitting, thereby preventing fluid flow between the metal sleeve and the outer cylindrical fitting. defining a passageway and communicating the fluid flow passage with each of the plurality of different fluid chambers through a through hole provided through the metal sleeve,
The fluid-filled cylindrical mount assembly according to claim 1 or 2, wherein the orifice passage is formed. (4) In the metal sleeve, a portion of the inner peripheral edge portion of the window portion constituting the support portion that faces at least one of the mount axis direction and the circumferential direction is bent inward in the mount radial direction. The fluid according to any one of claims 1 to 3, wherein the fluid comprises a stepped portion extending with a predetermined width, and the outer peripheral edge of the reinforcing metal fitting is held in a state inserted into the stepped portion. Enclosed cylindrical mount assembly. (5) In the fluid chamber in which the buffer rubber block is disposed, by being supported by the inner cylindrical metal fitting, the buffer rubber block protrudes outward in the radial direction of the mount at a predetermined height, and has a predetermined height relative to the protruding end surface of the buffer rubber block. 4. The stopper block according to claim 1, further comprising a stopper block disposed facing each other at a distance, and a cushioning rubber having a predetermined height integrally provided on the protruding end surface of the stopper block. Fluid-filled cylindrical mount assembly.