Seat back board, trim cover and vehicle seat
A seat back board includes: a flexible plate member which is made of a resin material and has the Shore hardness higher than 50, the plate member including: a back-surface covering part which covers a back surface of a seat back; and a bottom-surface covering part which covers a bottom surface of a seat cushion; a sewing part, which is sewn with a cover member covering a front surface and side surfaces of the seat back or is sewn with a coupling member to be coupled with the cover member in a detachable manner, being provided in an edge portion of the back-surface covering part; and a locking part, to be locked in the seat cushion, being provided in the bottom-surface covering part.
1. A seat back board comprising:
a flexible plate member which is made of a resin material and has the Shore hardness higher than 50, the plate member including:
a back-surface covering part which covers a back surface of a seat back; and
a bottom-surface covering part which covers a bottom surface of a seat cushion;
a sewing part, which is sewn with a cover member covering a front surface and side surfaces of the seat back or is sewn with a coupling member to be coupled with the cover member in a detachable manner, being provided in an edge portion of the back-surface covering part; and
a locking part, to be locked in the seat cushion, being provided in the bottom-surface covering part,
wherein the locking part is integrally formed with the plate member.
2. The seat back board according to claim 1 , wherein
the Shore hardness of the plate member is equal to or lower than 100.
3. The seat back board according to claim 1 , wherein
the locking part is a hook part to be inserted into a slit provided in the seat cushion.
4. The seat back board according to claim 1 , wherein
the locking part is a slit into which a hook part provided in the seat cushion is inserted.
5. The seat back board according to claim 1 , further comprising:
a skin material which is joined with a surface of the plate member.
6. The seat back board according to claim 1 , further comprising:
pocket fabric which forms a pocket in the back-surface covering part, wherein
the pocket fabric reaches from one edge portion to the other edge portion of the back-surface covering part in a seat width direction and is sewn with the sewing part together with the cover member or the coupling member.
7. A trim cover comprising:
the seat back board according to claim 1 ; and
a cover member which covers a front surface and side surfaces of a seat back, wherein
the sewing part provided in the back-surface covering part of the seat back board and the cover member are sewn directly or are coupled through the coupling member sewn with the sewing part.
8. A vehicle seat comprising:
a seat back which is covered with the trim cover according to claim 7 .