Headrest and method of manufacturing the headrest
AssigneeToyota Boshoku Kabushiki Kaisha
InventorsHiroshi Mizobata, Shuuhei Miyake
Life of this patent
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Abstract
A method of manufacturing a headrest including a stay, a skin material, a cushion material, and a dynamic damper is provided. The method includes arranging the skin material in a molding die, arranging the stay, to which an air bag is attached in such a manner as to cover the dynamic damper, inside the skin material, and injecting a foamable synthetic resin raw material into the skin material to foam-mold the injected foamable synthetic resin raw material integrally with the stay.
Claims8
A method of manufacturing a headrest, the headrest including a stay, a skin material, a cushion material that is foam-molded integrally with the stay inside the skin material and that has a hollow portion therein, and a dynamic damper that is attached to the stay and that is disposed in the hollow portion in such a manner as not to abut on the cushion material, the method comprising:
- arranging the skin material in a molding die;
- arranging the stay, to which an air bag is attached in such a manner as to cover the dynamic damper, inside the skin material;
- injecting a foamable synthetic resin raw material into the skin material to foam-mold the injected foamable synthetic resin raw material integrally with the stay;
- and
- taking out the air bag from the headrest after foam formation and solidification of the foamable synthetic resin raw material, or perforating a hole in the air bag and removing air therefrom after foam formation and solidification of the foamable synthetic resin raw material.
A method of manufacturing a headrest, the headrest including a stay, a skin material, a cushion material that is foam-molded integrally with the stay inside the skin material and that has a hollow portion therein, and a dynamic damper that is attached to the stay and that is disposed in the hollow portion in such a manner as not to abut on the cushion material, the method comprising:
- arranging the skin material in a molding die;
- arranging the stay, to which an air bag is attached in such a manner as to cover the dynamic damper, inside the skin material;
- and
- injecting a foamable synthetic resin raw material into the skin material to foam-mold the injected foamable synthetic resin raw material integrally with the stay, such that the air bag breaks and air is removed therefrom in a course of foam formation and solidification by heat generated at a time of foam formation and solidification of the foamable synthetic resin raw material.
A method of manufacturing a headrest, the headrest including a stay, a skin material, a cushion material that is foam-molded integrally with the stay inside the skin material and that has a hollow portion therein, and a dynamic damper that is attached to the stay and that is disposed in the hollow portion in such a manner as not to abut on the cushion material, the method comprising:
- arranging the skin material in a molding die;
- arranging the stay so that the attached dynamic damper is surrounded by the skin material, wherein the dynamic damper is covered by a low-melting-point material having a melting point lower than a foam formation-solidification reaction temperature of a foamable synthetic resin raw material, wherein the low-melting point material is formed having an outer shape corresponding to an inner shape of the hollow portion;
- and
- injecting the foamable synthetic resin raw material into the skin material to foam-mold the injected foamable synthetic resin raw material integrally with the stay and the low-melting-point material, and cause the low-melting-point material to fuse by heat generated at a time of foam formation and solidification of the foamable synthetic resin raw material.
Dependencies are inferred from the claim text.