Seat structure member and manufacturing method of same

Patent metadata

Field	Value
Publication number	US-10220550-B2
Application number	US-201615095790-A
Country	US
Kind code	B2
Filing date	Apr 11, 2016
Priority date	Feb 27, 2013
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A manufacturing method of a seat structure member includes forming a protrusion that protrudes inward on an inside surface of a portion that forms a foaming chamber for a seat pad, on one die and another die that form the foaming chamber. Applying, to a cover, a region that will not be integrated with the seat pad when the seat pad is foam molded, at a location on the cover that corresponds to a location of the protrusion when placing the cover on the inside surface of the foaming chamber. The method further includes arranging the cover following a shape of the protrusion and foam molding the seat pad and forming a space of a recessed portion between the seat pad and the cover, by releasing the one die and the other die after foam molding the seat pad.

First claim

What is claimed is:

1. A manufacturing method of a seat structure member, comprising:
forming a protrusion that protrudes inward on an inside surface of a portion that forms
a foaming chamber for a seat pad, on one die and another die that form the foaming chamber, the protrusion is formed at a position corresponding to a front surface of the seat pad;
applying, to a cover, a region that will not be integrated with the seat pad when the seat pad is foam molded, at a location on the cover that corresponds to a location of the protrusion when placing the cover on the inside surface of the foaming chamber;
arranging the cover following a shape of the protrusion and foam molding the seat pad;
integrating the cover with the seat pad at portions other than the region applied to the cover by making a foam material that defines the foam molded seat penetrate a back surface member of the cover, and
forming a space of a recessed portion between the seat pad and the cover, by releasing the one die and the other die after foam molding the seat pad.

2. The manufacturing method of the seat structure member according to claim 1 , further comprising:
providing the recessed portion formed on the surface of the seat pad at a location other than at a contact surface that is contacted by an occupant when the occupant is seated.

3. The manufacturing method of the seat structure member according to claim 1 , further comprising:
providing the recessed portion formed on the surface of the seat pad at a position corresponding to an end edge of a shield arranged on an outside surface of a seat.

4. The manufacturing method of the seat structure member according to claim 1 , further comprising:
providing the seat pad in a seat cushion; and
forming the recessed portion on a joining portion of the seat cushion, which joins with a seat back at a rear portion of the seat cushion.

5. A manufacturing method of a seat structure member, comprising:
forming a protrusion that protrudes inward on an inside surface of a portion that forms
a foaming chamber for a seat pad, on one die and another die that form the foaming chamber;
applying, to a cover, a region that will not be integrated with the seat pad when the seat pad is foam molded, at a location on the cover that corresponds to a location of the protrusion when placing the cover on the inside surface of the foaming chamber;
arranging the cover following a shape of the protrusion and foam molding the seat pad;
forming a space of a recessed portion between the seat pad and the cover, by releasing the one die and the other die after foam molding the seat pad,
providing a film through which foam material is unable to pass; and
arranging the film between the seat pad and the seat cover to avoid integrated molding of the seat pad and the cover.

6. A manufacturing method of a seat structure member, comprising:
forming a protrusion that protrudes inward on an inside surface of a portion that forms
a foaming chamber for a seat pad, on one die and another die that form the foaming chamber;
applying, to a cover, a region that will not be integrated with the seat pad when the seat pad is foam molded, at a location on the cover that corresponds to a location of the protrusion when placing the cover on the inside surface of the foaming chamber;
arranging the cover following a shape of the protrusion and subsequently foam molding the seat pad;

and
forming a space of a recessed portion between the seat pad and the cover, by releasing the one die and the other die after foam molding the seat pad.

Assignees

• Toyota Boshoku Kk

Inventors

• Nii Tomoki
• Murata Yoshiyuki

Classifications

• B29C44/583

  for making articles with cavities · CPC title

• B60N2/6009

  covering more than only the seat · CPC title

• B29C44/12 Primary

  Incorporating or moulding on preformed parts, e.g. inserts or reinforcements · CPC title

• B29L2031/771

  Seats · CPC title

• B29L2031/58

  Upholstery or cushions, e.g. vehicle upholstery or interior padding {(mattresses, cushions B29L2031/751)} · CPC title