Seat structure for vehicles

• US 6,276,650 B1
• Filed: 09/22/1999
• Issued: 08/21/2001
• Est. Priority Date: 09/25/1998
• Status: Expired due to Term

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Yamada, Yukifumi, Kojima, Yasuhiro
• Primary Examiner(s): Ramirez, Ramon O.
• Assistant Examiner(s): SZUMNY, JONATHON A
• Application Number:
  US09/401,796
• Time in Patent Office: 699 Days
• Field of Search: 248/424, 248/421, 248/419, 248/422, 248/429, 248/393, 248/395, 248/396, 297/344.1, 297/344.13, 297/344.15
• US Class Current: 248/429
• CPC Class Codes: B60N 2/071 T-shaped
• CPC Class Codes: B60N 2/0715 C or U-shaped
• CPC Class Codes: B60N 2/0732 Attachment of seat frame to the slide, e.g. eyelets
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/165 Gear wheel driven mechanism
• CPC Class Codes: B60N 2/167 Ratchet mechanism
• CPC Class Codes: B60N 2/1675 with weight compensating means
• CPC Class Codes: B60N 2/168 and provided with braking systems
• CPC Class Codes: B60N 2/1685 characterised by a lock
• CPC Class Codes: B60N 2/4214 longitudinal
• CPC Class Codes: B60N 2/42709 involving residual deformation or fracture of the structure

Abstract

To promote strength of lower arms for coupling rail members and a seat frame, each of the lower arms (4) is installed with a bead portion (21), a first recess portion (24) and a flat face portion (23) and the first recess portion (24) is made to be freely brought into contact with a projected portion (25) of an upper rail (3).

Claims

1. A seat structure of a vehicle comprising:

floor side members slidable relative to lower rails adapted to be fixed to a floor of the vehicle; and

lower arms each held by a respective one of the floor side members and adapted to support a seat, wherein each of the lower arms comprises a plate lying in a plane, said plate having a flange produced by extending a side edge of the plate in a side direction so that the flange extends out of the plane of the plate, a lower side of the flange of the plate being provided with a contact portion which is brought into contact with a portion of the respective floor side member when a load is applied to the seat upon collision of the vehicle causing the lower arm to move in a rear direction by a rearwardly directed inertia force resulting from the load.

2. The seat structure according to claim 1, wherein each of the floor side members and each of the lower arms are coupled via links, respectively.

3. The seat structure according to claim 1, wherein the contact portion of the lower arm is found on the rear side thereof and has a semi-circular shape.

4. A seat structure of a vehicle comprising:

floor side members slidable relative to lower rails adapted to be fixed to a floor of the vehicle; and

lower arms each held by a respective one of the floor side members and adapted to support a seat, wherein each of the lower arms comprises a plate having a flange produced by extending a side edge thereof in a side direction and a lower side of the flange of the plate is provided with a contact portion which is brought into contact with a portion of the respective floor side member when a load is applied to the seat upon collision of the vehicle causing the lower arm to move by an inertia force resulting from the load, wherein a bead portion extended in a longitudinal direction is formed on a vertical wall portion of the lower arms, a flat face is formed on a front side of the vertical wall portion and a deformation base portion disposed at a boundary between the bead portion and the flat face is formed at the lower side of the flange of the lower arms.

5. A seat structure of a vehicle comprising:

floor side members slidable relative to lower rails adapted to be fixed to a floor of the vehicle; and

lower arms each held by a respective one of the floor side members and adapted to support a seat, wherein each of the lower arms comprises a plate having a flange produced by extending a side edge thereof in a side direction, a lower side of the flange of the plate is provided with a semi-circular portion, a bead portion extended in a longitudinal direction is formed on a vertical wall portion of the lower arms, a flat face is formed on a front side of the vertical wall, and a deformation base portion disposed at a boundary between the bead portion and flat face is formed at the lower side of the flange of the lower arms.