Vehicle seat assembly
First Claim
1. 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;
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;
wherein at least one of said lever members consists of a bell crank having a first end attached to said rod member, and a second end adapted to be actuated by said actuator; and
wherein said actuator comprises a piston/cylinder assembly connected between said second end and said seat, said piston/cylinder assembly comprising a cylinder and a gas generator received in said cylinder.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a vehicle seat assembly which can prevent a submarine phenomenon in a reliable manner, and which is simple in structure so as to allow a high level of flexibility in layout. A slip preventing member for preventing the vehicle occupant from slipping forward under the seat belt in case of an impact is supported by a fixed part of a seat so as to be pivotable between a retracted position and a raised position, and an actuator is interposed between a fixed part of said seat and a part of said slip preventing member. To retain the slip preventing member at its raised position even after the power of the power unit is all used up, the assembly further includes a lock mechanism for retaining said slip preventing member at said raised position.
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Citations
40 Claims
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1. A vehicle seat assembly, comprising:
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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;
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;
wherein at least one of said lever members consists of a bell crank having a first end attached to said rod member, and a second end adapted to be actuated by said actuator; and
wherein said actuator comprises a piston/cylinder assembly connected between said second end and said seat, said piston/cylinder assembly comprising a cylinder and a gas generator received in said cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16)
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8. A vehicle seat assembly, comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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17. A vehicle seat assembly, comprising:
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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. - View Dependent Claims (21)
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18. A vehicle seat assembly, comprising:
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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. - View Dependent Claims (19, 20)
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22. A vehicle seat assembly, comprising:
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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. - View Dependent Claims (23, 24)
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25. 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. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A vehicle seat assembly, comprising:
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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.
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36. A vehicle seat assembly, comprising:
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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. - View Dependent Claims (37, 38)
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39. A vehicle seat assembly, comprising:
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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.
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40. A vehicle seat assembly, comprising:
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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.
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Specification