FRAME STRUCTURE FOR A VEHICLE SEAT BACKREST

• US 20200130547A1
• Filed: 09/20/2019
• Published: 04/30/2020
• Est. Priority Date: 10/24/2018
• Status: Active Grant

• Current Assignee: Volvo Car Corporation (AB Volvo)
• Original Assignee: Volvo Car Corporation (AB Volvo)
• Inventors: MODH, Lars, WALLMANDER, Johan
• Granted Patent: US 11,472,323 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/015 Attaching seats directly to vehicle chassis
• CPC Class Codes: B60N 2/68 Seat frames
• CPC Class Codes: B60N 2/682 Joining means
• CPC Class Codes: B60N 2/688 Particular seat belt attachment and guiding
• CPC Class Codes: B60N 2205/35 Seat, bench or back-rests being split laterally in two or more parts

Abstract

A frame structure (5) for a vehicle seat backrest (3), said frame structure (5) comprising a centre frame (18) and a side frame (14), said centre frame (18) and said side frame (14) extending in a longitudinal (x), transversal (y) and vertical (z) direction, respectively, said longitudinal (x), transversal (y) and vertical (z) directions being perpendicular to each other and corresponding to a longitudinal, transversal and vertical direction, respectively, of a vehicle. Said frame structure (5) further comprises a lower connection (7) which is adapted to interconnect said centre frame (18) and said side frame (14) and which is located at or adjacent to a lower end of said frame structure (5) in said vertical direction (z).

Claims

1. A frame structure for a vehicle seat backrest, said frame structure comprising a centre frame and a side frame,

said centre frame and said side frame extending in a longitudinal (x), transversal (y) and vertical (z) direction, respectively,

said longitudinal (x), transversal (y) and vertical (z) directions being perpendicular to each other and corresponding to a longitudinal, transversal and vertical direction, respectively, of a vehicle,

said frame structure further comprising a lower connection which is adapted to interconnect said centre frame and said side frame and which is located at or adjacent a lower end of said frame structure in said vertical direction (z),

wherein said lower connection comprises

a male connection member being adapted to be attached to one of said side frame and said centre frame and adapted to extend in said transversal direction (y) when attached;

and

a female connection member being adapted to be attached to another one of said side frame and said centre frame and adapted to extend in said transversal direction (y) when attached, said female connection member being adapted to receive said male connection member;

wherein said male connection member or said female connection member comprises a displacement restrictor, said displacement restrictor providing a stop for insertion of said male connection member exceeding a predetermined insertion distance in at least said transversal direction (y), when said male connection member is connected to said female connection member.

2. The frame structure of claim 1, wherein a cross member of the one of said side frame and said centre frame to which it is adapted to be attached forms or comprises said female connection member, said cross member extending in said transversal direction (y) and having at least a portion with a hollow cross section facing said male connection member, thereby forming or comprising said female connection member (61).

3. The frame structure of claim 2, wherein said female connection member is a separate part with respect to said cross member and is adapted to fit into said cross member, or an integrated part with respect to said cross member.

4. The frame structure of claim 1, wherein said displacement restrictor comprises or consists of an inner end surface of said female connection member such that said inner end surface provides said stop for said male connection member when said male connection member is connected to said female connection member.

5. The frame structure of claim 4, wherein said inner end surface is arranged at a depth (d) from a receiving end of said female connection member in said transversal direction (y), said depth (d) being in a range of from 10 to 100 mm.

6. The frame structure of claim 1, wherein said displacement restrictor is arranged to an outer circumference of said male connection member, said displacement restrictor having an extension larger than an extension of said female connection member in a direction transversal to an axial direction of said female connection member, such that said displacement restrictor is restricted from being inserted into said female connection member when said male connection member is connected to said female connection member.

7. The frame structure of claim 6, wherein said displacement restrictor is arranged at a distance (D) in said transversal direction (y) from an insertion end of said male connection member, said distance (D) being in a range of from 15 to 115 mm.

8. The frame structure of claim 1, wherein said male connection member comprises or consists of a protruding element, such as pin or rod, adapted to extend in said transversal direction (y) when attached.

9. The frame structure of claim 1, wherein said side frame comprises a seatbelt guide installation portion arranged to an upper side portion of said side frame which is located adjacent said centre frame.

10. The frame structure of claim 9, wherein said frame structure further comprises an upper connection which is adapted to interconnect said centre frame and said side frame, said upper connection being spaced apart from and located above said lower connection in said vertical direction (z), wherein said upper connection is located at or adjacent to said seatbelt guide installation portion in a vertical direction (z) of said frame structure.

11. The frame structure of claim 10, wherein said upper connection has a play (l_u) in said transversal direction (y) between said side frame and said centre frame, said play being equal to or less than 12 mm.

12. The frame structure of claim 1, wherein said centre frame of said frame structure comprises a first attachment and a second attachment spaced apart in said transversal direction (y), said first attachment being adapted to be connected to said male connection member, wherein said first attachment and said second attachment are adapted to be connected to a vehicle body of a vehicle in use of the frame structure.

13. The frame structure of claim 1, wherein said centre frame comprises a reinforcing member extending obliquely downwards from an upper side portion of said centre frame adjacent to said upper connection to a lower side portion of said centre frame.

14. A vehicle seat backrest comprising the frame structure of claim 1.

15. A vehicle comprising the vehicle seat backrest of claim 14.