Vehicle seats and manufacturing methods thereof

A manufacturing method of a vehicle seat,

• the vehicle seat comprising:
• a cushion pad configured to cover a seat frame and to be attached to the seat frame;
• a seat skin configured to cover the cushion pad, the seat skin provided with a developing portion to be developed by a developing force of an airbag;
• a webbing connected to the seat skin so as to transmit the developing force of the airbag to the developing portion, the webbing extending from the seat skin and having a fixation portion;
• a fastener provided at the fixation portion of the webbing;
• and
• a retaining structure configured to retain the fastener at a predetermined position with respect to the cushion pad before the fastener is fastened to a corresponding member,
• the manufacturing method comprising:
• setting a back surface member in a mold for forming the cushion pad;
• foaming a foam material in the mold to form the cushion pad, and
• leaking a part of the foam material through a slit formed in the back surface member to form the retaining structure, the retaining structure firmly attaching a connection portion between the webbing and the fastener to the cushion pad.

A vehicle seat comprising:

• a cushion pad configured to cover a seat frame and to be attached to the seat frame;
• a seat skin configured to cover the cushion pad, the seat skin provided with a developing portion to be developed by a developing force of an airbag;
• a webbing connected to the seat skin so as to transmit the developing force of the airbag to the developing portion, the webbing extending from the developing portion of the seat skin and having a fixation portion;
• a fastener provided at the fixation portion of the webbing;
• and
• a retaining structure configured to detachably retain the fastener at a predetermined position at the cushion pad before the fastener is fastened to a corresponding member,
• wherein the retaining structure is configured to be divided when the fastener is detached from the retaining structure.