Vehicle seat assembly

A vehicle seat assembly, comprising:

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position, said actuator comprising a piston rod and a cylinder;
• a lock mechanism for retaining said slip preventing member at said raised position;
• and
• wherein said lock mechanism comprises a one-way lock mechanism incorporated between said piston rod and said cylinder.

A vehicle seat assembly, comprising:

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position;
• a lock mechanism for retaining said slip preventing member at said raised position;
• and
• a seat belt pretension device which is adapted to selectively move a seat belt buckle in a direction to apply a tension to a seat belt;
• wherein said slip preventing member comprises a lever member supported by said seat so as to be pivotable around a laterally extending pivot shaft, and a rod member extending along a front edge of said seat and attached to a free end of said lever member.

A vehicle seat assembly, comprising:

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position;
• a lock mechanism for retaining said slip preventing member at said raised position;
• and
• a seat belt pretension device which is adapted to selectively move a seat belt buckle in a direction to apply a tension to a seat belt;
• wherein said slip preventing member comprises a pair of lever members supported on either side of said seat so as to be pivotable around a pair of laterally extending pivot shafts, and a rod member extending along a front edge of said seat and attached across free ends of said lever members.

A vehicle seat assembly, comprising:

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position;
• a lock mechanism for retaining said slip preventing member at said raised position;
• and
• a seat belt pretension device which is adapted to selectively move a seat belt buckle in a direction to apply a tension to a seat belt;
• wherein said actuator comprises a piston rod and a cylinder and said lock mechanism comprises a one-way lock mechanism incorporated between said piston rod and said cylinder.

A vehicle seat assembly, comprising

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position,
• a lock mechanism for retaining said slip preventing member at said raised position;
• and
• said actuator comprising a piston/cylinder assembly connected between said seat and said slip preventing member, said piston/cylinder assembly comprising a cylinder and a gas generator received in said cylinder.

A vehicle seat assembly, comprising:

• a seat frame;
• a shaft mounted on said seat frame;
• a first lever pivotably mounted on said shaft;
• an actuator coupled between an end of said first lever and said seat frame, said actuator comprising:
• a cylinder;
• a piston located in said cylinder;
• a piston rod fixedly attached to said piston;
• and
• a gas generator located in said cylinder opposite of said piston;
• and
• a rod coupled to another end of said first lever, wherein said rod has a C-shaped middle section.

A vehicle seat assembly, comprising:

• a seat frame;
• a shaft mounted on said seat frame;
• a first lever pivotably mounted on said shaft;
• an actuator coupled between an end of said first lever and said seat frame, said actuator comprising:
• a cylinder;
• a piston located in said cylinder;
• a piston rod fixedly attached to said piston;
• and
• a gas generator located in said cylinder opposite of said piston;
• and
• a locking mechanism interposed between said piston rod and said cylinder, wherein said locking mechanism comprises:
• a casing mounted on said cylinder;
• a chamber defined between an inner surface of said casing and an outer surface of said piston rod, wherein at least a portion of said inner surface of said casing being inclined relative to said outer surface of said piston rod;
• an engagement piece located in said chamber, said engagement piece being interposed between said casing and said piston rod;
• and
• a spring in said casing, said spring being interposed between said casing and said engagement piece.

A vehicle seat assembly, comprising:

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position, wherein said actuator comprises:
• a cylinder;
• a piston located in said cylinder;
• a piston rod fixedly attached to said piston;
• a gas generator located in said cylinder opposite of said piston;
• and
• a locking mechanism interposed between said piston rod and said cylinder, said lock mechanism for retaining said slip preventing member at said raised position;
• and
• a seat belt pretension device which is adapted to move a seat belt buckle in a direction away from an occupant seated on said seat.

A vehicle seat assembly, comprising:

• a slip preventing member supported by a seat so as to be pivotable between a retracted position and a raised position;
• an actuator interposed between said seat and said slip preventing member, and adapted to move said slip preventing member toward said raised position;
• a lock mechanism for retaining said slip preventing member at said raised position;
• a seat belt pretension device which is adapted to move a seat belt buckle in a direction away from an occupant seated on said seat;
• and
• a shaft mounted on said seat, wherein the slip preventing member is pivotably mounted on said shaft, wherein said locking mechanism is mounted on said shaft.