Vibration-damping device
AssigneeYamashita Rubber Kabushiki Kaisha
InventorShigeo Kojima
Life of this patent
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Abstract
The present invention provides a vibration-damping device having an inner cylinder, an outer cylinder arranged at a distance on an outer diameter side of the inner cylinder, a rubber elastic body interposed between the inner cylinder and the outer cylinder for elastically coupling the inner cylinder and the outer cylinder, and an intermediate plate embedded in the rubber elastic body. A plurality of cutout parts positioned on both end sides in the axial direction of the outer cylinder for joining an inner side rubber elastic body and an outer side rubber elastic body are formed in the intermediate plate. At least one of the cutout parts is arranged to overlap on an area that is sandwiched between two parallel imaginary planes that are adjacent to the outer peripheral surface of the inner cylinder.
Claims14
A vibration-damping device comprising:
- an inner cylinder;
- an outer cylinder arranged at a distance on an outer diameter side of the inner cylinder;
- a rubber elastic body that is interposed between the inner cylinder and the outer cylinder to couple the inner cylinder and the outer cylinder elastically;
- and
- an intermediate member that is embedded in the rubber elastic body,
- wherein
- the intermediate member has a plurality of cutout parts that position on both end sides in an axial direction of the outer cylinder and at which the rubber elastic body inside the intermediate member is joined with the rubber elastic body outside the intermediate member, the intermediate member further has belt parts and a joining part having a plurality of projections forming one end portion and another end portion of the intermediate member in the axial direction, a thickness of the joining part is equal to a thickness of the projections in a radial direction,
- at least one of the plurality of cutout parts is arranged to overlap a first area between two parallel imaginary planes each tangentially extending from opposite points on an outer circumference surface of the inner cylinder and to overlap a second area between two imaginary planes that pass through a center of the inner cylinder and are orthogonal to each other,
- a cross-sectional shape of the projections in a direction orthogonal to the axial direction follows a cross-sectional shape of the cutout parts,
- the projections are located outside the first area and the second area, and project outward in the axial direction with respect to end surfaces of the outer cylinder, and
- a thickness of an inner side rubber elastic body between the inner cylinder and the intermediate member is equal to a thickness of an outer side rubber elastic body between the outer cylinder and the intermediate member.
A vibration-damping device comprising:
- an inner cylinder;
- an outer cylinder arranged at a distance on an outer diameter side of the inner cylinder;
- a rubber elastic body that is interposed between the inner cylinder and the outer cylinder to couple the inner cylinder and the outer cylinder elastically;
- and
- an intermediate member that is embedded in the rubber elastic body, wherein
- the intermediate member has a plurality of cutout parts that position on both end sides in an axial direction of the outer cylinder and at which the rubber elastic body inside the intermediate member is joined with the rubber elastic body outside the intermediate member, the intermediate member further has belt parts and a joining part having a plurality of projections forming one end portion and another end portion of the intermediate member in the axial direction, a thickness of the joining part is equal to a thickness of the projections in a radial direction,
- at least one of the plurality of cutout parts is arranged to overlap a first area between two parallel imaginary planes each tangentially extending from opposite points on an outer circumference surface of the inner cylinder and to overlap a second area between two imaginary planes that pass through a center of the inner cylinder and are orthogonal to each other,
- a cross-sectional shape of the projections in a direction orthogonal to the axial direction follows a cross-sectional shape of the cutout parts,
- the projections are located outside the first area and the second area, and project outward in the axial direction with respect to end surfaces of the outer cylinder,
- the rubber elastic body has a free extendable part that positions on both end sides in an axial direction of the outer cylinder and extends free length, and
- a thickness of an inner side rubber elastic body between the inner cylinder and the intermediate member is equal to a thickness of an outer side rubber elastic body between the outer cylinder and the intermediate member.
Dependencies are inferred from the claim text.