Vibration damping device and method of manufacturing vibration damping device
AssigneeSumitomo Riko Company Limited
InventorKazuki Hotta
Life of this patent
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Abstract
A vibration damping device including an inner, a tubular outer disposed on a radially outer side of the inner, an elastic body connecting the inner and the outer, and a retainer disposed on at least one axial end of the inner and penetrated by an opening in an axial direction. The inner includes an annular projection extending outward in the axial direction from at least one axial end face of the inner and inserted in the opening of the retainer. The annular projection includes a plurality of compressed fixation parts arranged apart from each other in a circumferential direction. The retainer is fixed by compression to the inner by the compressed fixation parts being compressed against an inner circumferential surface of the opening.
Claims13
A vibration damping device comprising:
- an inner;
- an outer having a tubular shape and disposed on a radially outer side of the inner;
- an elastic body connecting the inner and the outer;
- and
- a retainer disposed on at least one axial end of the inner and penetrated by an opening in an axial direction, wherein
- the inner includes an annular projection extending outward in the axial direction from at least one axial end face of the inner and inserted in the opening of the retainer,
- the annular projection includes a plurality of compressed fixation parts arranged apart from each other in a circumferential direction, and
- the retainer is fixed to the inner with the plurality of compressed fixation parts being compressed against an inner circumferential surface of the opening of the retainer.
A method of manufacturing a vibration damping device that comprises an inner including an annular projection extending outward in an axial direction from at least one axial end face of the inner, an outer having a tubular shape and disposed on a radially outer side of the inner, an elastic body connecting an inner circumferential surface of the outer and an outer circumferential surface of the inner, and a retainer disposed on at least one axial end of the inner and penetrated by an opening in the axial direction, the method comprising:
- a connection step of forming the elastic body such that the inner and the outer are connected by the elastic body;
- an insertion step of inserting the annular projection of the inner into the opening of the retainer;
- and
- a compression step of using a compression jig having an outer circumferential surface of tubular shape, the outer circumferential surface including a plurality of expanded parts that are expanded in a radial direction and arranged apart from each other in a circumferential direction, and inserting the compression jig into a radial inside of the annular projection of the inner such that portions of the annular projection at which the respective expanded parts of the compression jig are placed are compressed against an inner circumferential surface of the opening of the retainer to provide a plurality of compressed fixation parts arranged apart from each other in a circumferential direction of the annular projection and to fix the retainer to the inner.
A method of manufacturing a vibration damping device that comprises an inner including an annular projection extending outward in an axial direction from at least one axial end face of the inner, an outer having a tubular shape and disposed on a radially outer side of the inner, an elastic body connecting an inner circumferential surface of the outer and an outer circumferential surface of the inner, and a retainer disposed on at least one axial end of the inner and penetrated by an opening in the axial direction, the method comprising
- a compression step of using a compression jig having an outer circumferential surface of tubular shape, the outer circumferential surface including a plurality of expanded parts that are expanded in a radial direction and arranged apart from each other in a circumferential direction, and inserting the compression jig into a radial inside of the annular projection of the inner inserted in the opening of the retainer such that portions of the annular projection at which the respective expanded parts of the compression jig are placed are compressed against an inner circumferential surface of the opening of the retainer to provide a plurality of compressed fixation parts arranged apart from each other in a circumferential direction of the annular projection and to fix the retainer to the inner.
Dependencies are inferred from the claim text.