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US 7,066,552 B2Granted
Seat back frame for vehicle seat
AssigneeTs Tech Co., Ltd.
InventorMasami Yoshida
Life of this patent
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AssigneeTs Tech Co., Ltd.
InventorMasami Yoshida
Estimating the term…
A seat back frame for a vehicle seat includes first and second side members spaced apart from each other, each of the first and second side members being made of ultra-high tensile strength steel, the first side member having a first longitudinal body of a substantially U-shape in cross-section, the first longitudinal body comprising a pair of first spaced apart flange sections and a first main plate section interconnecting the first spaced apart flange sections, the first side member having a first upper region and a first lower region, the second side member having a second longitudinal body of a substantially U-shape in cross-section, the second longitudinal body comprising a pair of second spaced apart flange sections and a second main plate section interconnecting the second spaced apart flange sections, the second side member having a second upper region and a second lower region, an upper member arranged between the first and second upper regions of the first and second side members, the upper member being made of ultra-high tensile strength steel, the upper member having first and second end portions, the upper member being mounted, by spot-welding, to the first and second upper regions of the first and second side members with the first and second end portions thereof being fitted in the first and second side members, and a lower member arranged between the first and second lower regions of the first and second side members, the lower member being made of ultra-high tensile strength steel, the lower member having third and fourth end portions, and the lower member being mounted, by spot-welding, to the first and second lower regions of the first and second side members with the third and fourth end portions thereof being fitted in the first and second side members.
A seat back frame for a vehicle seat comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Seat frames: panel like structures
Longitudinal: due to impact coming from the rear
Involving substantially rigid displacement: of the back-rest
Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles: back-rests or cushions
Term ended 31 Mar 2024 (estimated)
1. Field of the Invention
This invention relates to a substantially quadrilateral-shaped seat back frame for a vehicle seat, which is assembled from components which are each made of a thin plate of ultra-high tensile strength steel and formed into a predetermined shape by press-machining the thin plate.
2. Description of the Prior Art
These and other objects and many of the attendant advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, in which like reference numerals denote the same parts throughout the Figures and wherein:
FIG. 1 is a schematic exploded front view of a seat back frame according to an embodiment of the present invention;
FIG. 2 is a schematic side view of the seat back frame shown in FIG. 1;
A seat back frame for a vehicle seat according to the present invention will be discussed hereinafter with reference to the accompanying drawings.
In an illustrated embodiment, the present invention is applied to a seat back frame for a vehicle seat including a height adjustable head rest, recliner devices for allowing a seat back of the vehicle seat to be pivotally moved relative to a seat cushion of the vehicle seat, and a slide rail mechanism for allowing the vehicle seat to be moved forward and rearward in a vehicle.
Referring to FIGS. 1 and 2, there is illustrated the seat back frame according to the embodiment of the present invention. The seat back frame comprises a pair of spaced apart side members 1, 2, an upper member 3 interconnecting upper portions of the side members 1,2, a lower member 4 interconnecting lower portions of the side members 1,2, and a supplementary member 5 for reinforcing the lower member 4. Each of the components of the seat back frame is made of ultra-high tensile strength steel, and is formed into a predetermined shape by press-machining a thin plate of ultra-high tensile strength steel. The upper member 3 and the lower member 4 are mounted to the spaced apart side members 1, 2 by spot-welding. Though tension springs are not shown in FIG. 1, the tension springs are to be stretched between the spaced apart side members 1,2.