Patent ID: 8523154
Filing Date: 2013-09-03
Classification: F16F

Abstract:
1. A vibration control equipment comprising: a pair of damping rubbers each having an outer tube, an axial outer end of the outer tube being provided with a flange portion extending outwardly in a radial direction, an inner tube disposed in the outer tube, and a rubber elastic body that connects the outer tube and the inner tube, the damping rubbers being symmetrically disposed in a vertical direction; a pair of plate members, with the pair of damping rubbers being interposed between the pair of plate members; a bracket member interposed between the upper and lower flange portions of the pair of damping rubbers, and provided with a fixing hole, through which each outer tube of the pair of damping rubbers is inserted from an upper portion and a lower portion; and a fastening member that connects the pair of plate members, wherein the bracket member is fixed to any one of a vibration generating body and a vibration receiving body, and at least one of the pair of plate members is fixed to the other of the vibration generating body and the vibration receiving body, and the pair of rubber elastic bodies of the pair of damping rubbers are axially compressed through the pair of plate members by firmly fastening the fastening member, characterized in that before the fastening member is firmly fastened, the outer tube has an outer diameter smaller than an inner diameter of the fixing hole; the pair of rubber elastic bodies of the pair of damping rubbers are compressively deformed by firmly fastening the fastening member, so that the flange portion comes into close contact with the bracket member to clamp the bracket member by the upper and lower flange portions; each of the pair of rubber elastic bodies is provided with a mold cavity portion axially penetrating therethrough; at least one of the pair of outer tubes is provided with a positioning portion, that determines the circumferential positions of the pair of damping rubbers with respect to the bracket member; the bracket member includes an engaging portion, the engaging portion comprising a through hole axially penetrating the bracket member, such that the positioning portion on the at least one of the pair of outer tubes is inserted into the engaging portion; each of the pair of rubber elastic bodies is provided with an opening at an axial outer end thereof after the fastening member is firmly fastened, the opening in which the mold cavity portion opens outward in the radial direction; and the pair of mold cavity portions of the pair of rubber elastic bodies are disposed at a same position as each other in a circumferential direction of the inner tube.