Vehicle seat backrest and associated manufacturing method

Patent metadata

Field	Value
Publication number	US-12208718-B2
Application number	US-202217877733-A
Country	US
Kind code	B2
Filing date	Jul 29, 2022
Priority date	Jul 30, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

A vehicle seat backrest having a body, a cover layer designed to be placed at the back of the body and covering at least a portion of the body, a storage apparatus defining a storage volume over a portion of the cover layer, and a fixation device for attaching the storage apparatus onto the cover layer. The fixation device includes at least one fixation support and at least one pin. The cover layer is overmolded onto the at least one fixation support. The at least one pin mates with the at least one fixation support and the storage apparatus so as to attach the storage apparatus to the cover layer.

First claim

The invention claimed is:

1. A backrest of a vehicle seat comprising a body, a cover layer designed to be placed at the back of the body and covering at least part of the body, a storage apparatus defining a storage volume over a portion of the cover layer, and a fixation device for attaching the storage apparatus onto the cover layer, the fixation device comprising at least one fixation support and at least one pin, the cover layer being overmolded onto the at least one fixation support, the at least one pin cooperating with the at least one fixation support and the storage apparatus so as to attach the storage apparatus to the cover layer.

2. The seat backrest according to claim 1 , wherein the cover layer comprises polyurethane and/or plastic.

3. The seat backrest according to claim 1 , wherein the cover layer has at least one through hole, the at least one through hole having an edge, the at least one fixation support being a ring which extends into the at least one through hole about an axis, said ring comprising an inner circumferential face delimiting an attachment hole wherein the at least one pin extends, and an outer circumferential face radially opposite the inner circumferential face and extending against the edge of the corresponding through hole.

4. The seat backrest according to claim 3 , wherein the cover layer comprises a structure layer and a finish layer, the structure layer comprising an inner face oriented toward the body and an outer face opposite the inner face, the finish layer having an inner face extending over at least part of the outer face of the structure layer and an outer face opposite the inner face of the finish layer, the attachment hole extending from the inner face of the structure layer to the outer face of the finish layer.

5. The seat backrest according to claim 4 , wherein the finish layer comprises a paint layer and a non-cellular water-free polyurethane skin, the paint layer being formed by applying paint to a shaping surface of a shaping tool, the skin being applied to the paint layer in the shaping tool, the structure layer being made of foam and being formed by applying the foam against the skin in the shaping tool.

6. The seat backrest according to claim 1 , wherein the storage apparatus comprises a sheet and a frame around the sheet, the sheet being attached to the frame, the at least one pin cooperating with the frame, the storage volume extending between the cover layer and said sheet.

7. The seat backrest according to claim 3 , wherein the storage apparatus comprises a sheet and a frame around the sheet, the sheet being attached to the frame, the at least one pin cooperating with the frame, the storage volume extending between the cover layer and said sheet, wherein the ring further comprises an inner transverse face oriented toward the body and an outer transverse face opposite said inner transverse face, the inner transverse face and the outer transverse face connecting the inner and outer circumferential faces, each pin comprising a base and two feet extending from the base parallel to the axis, the two feet resting against the inner circumferential face of the ring, the two feet delimiting therebetween, a receiving space for receiving the frame.

8. The seat backrest according to claim 7 , wherein each foot of the at least one pin comprises a retaining protrusion extending into the receiving space, the frame being retained in the receiving space between the base of the pin and the retaining protrusions.

9. The seat backrest according to claim 7 , wherein the base of the at least one pin extends opposite the outer transverse face of the ring, each foot comprising an end extending facing the inner transverse face of the ring, each foot comprising at the end thereof, a stop extending radially with respect to the axis away from the axis, each stop resting against the inner transverse face of the ring.

10. The seat backrest according to claim 9 , wherein the fixation device further comprises a cover covering the at least one pin, the cover comprising a main wall extending in a plane substantially perpendicular to the axis, and two side walls extending from the main wall toward the fixation support to a bearing end, the bearing end resting against the sheet so that the sheet is clamped between the bearing end and the outer transverse face of the ring, each side wall comprising a protrusion extending radially toward the axis, the base of the at least one pin comprising a bearing surface facing the outer transverse face of the ring, the bearing surface resting against each protrusion of the side walls so that the at least one pin is held in position along the axis.

11. A vehicle seat comprising a seat cushion, the seat backrest according to claim 1 , and a seat headrest.

12. A method for manufacturing a backrest of a vehicle seat comprising:
providing a body, a storage apparatus, and a fixation device for attaching the storage apparatus onto a cover layer of the seat, the fixation device comprising at least one fixation support and at least one pin;
overmolding of the cover layer on the at least one fixation support;
placing the cover layer at the back of the body, the cover layer covering at least part of the body; and
arranging the at least one pin in such a way that the at least one pin cooperates with the at least one fixation support and the storage apparatus so as to attach the storage apparatus to the cover layer.

13. The method according to claim 12 , wherein the at least one fixation support is a ring, the overmolding of the cover layer onto the at least one fixation support comprising:
providing a shaping tool comprising a first shaping surface having the shape of an outer surface of the cover layer and an imprint of an attachment hole wherein the at least one pin is designed to extend;
arranging the ring around the imprint and against the first shaping surface;
forming of a finish layer on the first shaping surface; and
applying the structure layer against an inner face of the finish layer.

Assignees

• Faurecia Sieges Dautomobile

Inventors

• Fouinat Didier
• Thomas Julie
• Remy Christophe
• Etienne Fabrice

Classifications

• B60R7/00

  Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps (for radio sets, television sets, telephones or the like, mounting of cameras operative during drive, tools, or spare parts B60R11/00; for receptacles for refuse, food, beverages, cigarettes B60N) · CPC title

• F16B5/128

  a strip with a C-or U-shaped cross section being fastened to a plate such that the fastening means remain invisible, e.g. the fastening being completely enclosed by the strip · CPC title

• B60R7/005

  Nets or elastic pockets tensioned against walls or backrests · CPC title

• B63G7/08

  of acoustic type · CPC title

• F16B5/06

  by means of clamps or clips ({F16B5/0004 takes precedence}; friction-grip releasable fastenings in general F16B2/00) · CPC title