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US 7,137,669 B2Granted
Vehicle seat
AssigneeTs Tech Co., Ltd.
InventorMasaki Nagayama
Life of this patent
Estimating the term…
Abstract
A vehicle seat includes a seat cushion which has a frame structure and a cushion member combined with the frame structure, the frame structure including a pair of spaced apart side frame members, a front frame member fixed to forward end portions of the side frame members, a connecting shaft extending between rearward end portions of the side frame members and interconnecting the rearward end portions of the side frame members, a plurality of zigzag springs stretched between the front frame member and the connecting shaft, the cushion member being laid on the zigzag springs, and retainers mounted on the connecting shaft, the zigzag springs being engaged at one terminals thereof with the retainer.
Claims36
A vehicle seat including a seat cushion which has a frame structure and a cushion member combined with said frame structure;
- said frame structure comprising:
- a pair of spaced apart side frame members;
- said side frame members having forward and rearward end portions;
- a front frame member fixed to said forward end portions of said side frame members;
- a connecting shaft extending between said rearward end portions of said side frame members and interconnecting said rearward end portions of said side frame members;
- a plurality of zigzag springs stretched between said front frame member and said connecting shaft;
- said cushion member being laid on said zigzag springs;
- each of said zigzag springs having first and second terminals;
- said first terminal being coupled to said front frame member;
- said second terminal being formed into a substantially U-shape in outline and comprising first and second spaced apart axial portions and an intermediate axial portion interconnecting said first and second axial portions;
- and
- a plurality of retainers for coupling second terminals of said zigzag springs to said connecting shaft therethrough;
- each of said retainers comprising a substantially U-shaped body in cross-section, a first spring-receiving section extending laterally from one end of said U-shaped body, and a second spring-receiving section extending laterally from the other end of said U-shaped body;
- said U-shaped body of said each of said retainers being mounted on said connecting shaft with an opening thereof facing downward;
- and
- said each of said zigzag springs being coupled at said second terminal thereof to a corresponding one of said retainers with said first axial portion and said second axial portion being engaged with a first spring-receiving section of said corresponding retainer and a second spring-receiving section of said corresponding retainer, respectively, and with an intermediate axial portion thereof being located under said connecting shaft and contacted with said connecting shaft.
13 more elements
A retainer for coupling a zigzag spring to a frame structure for a seat cushion of a vehicle seat,
- said frame structure comprising:
- a pair of spaced apart side frame members;
- said side frame members having forward and rearward end portions;
- a front frame member fixed to said forward end portions of said side frame members;
- and
- a connecting shaft extending between said rearward end portions of said side frame members and interconnecting said rearward end portions of said side frame members;
- said zigzag spring having first and second terminals;
- said first terminal being coupled to said front frame member;
- said second terminal being formed into a substantially U-shape in outline and comprising first and second spaced apart axial portions and an intermediate axial portion interconnecting said first and second axial portions;
- said retainer comprising a substantially U-shaped body in cross-section, a first spring-receiving section extending laterally from one end of said U-shaped body, and a second spring-receiving section extending laterally from the other end of said U-shaped body;
- said U-shaped body of said retainer being mounted on said connecting shaft with an opening thereof facing downward;
- and
- said zigzag spring being coupled at said second terminal thereof to said retainer with said first axial portion and said second axial portion being engaged with said first spring-receiving section of said retainer and said second spring-receiving section of said retainer, respectively, and with an intermediate axial portion thereof being located under said connecting shaft and contacted with said connecting shaft.
10 more elements
A connecting structure for coupling a zigzag spring to a frame structure for a seat cushion of a vehicle seat,
- said frame structure comprising:
- a pair of spaced apart side frame members;
- said side frame members having forward and rearward end portions;
- a front frame member fixed to said forward end portions of said side frame members;
- and
- a connecting shaft extending between said rearward end portions of said side frame members and interconnecting said rearward end portions of said side frame members;
- said zigzag spring having first and second terminals;
- said first terminal being coupled to said front frame member;
- said second terminal being formed into a substantially U-shape in outline and comprising first and second spaced apart axial portions and an intermediate axial portion interconnecting said first and second axial portions;
- said connecting structure comprising a retainer;
- said retainer comprising a substantially U-shaped body in cross-section, a first spring-receiving section extending laterally from one end of said U-shaped body, and a second spring-receiving section extending laterally from the other end of said U-shaped body;
- said U-shaped body of said retainer being mounted on said connecting shaft with an opening thereof facing downward;
- and
- said zigzag spring being coupled at said second terminal thereof to said retainer with said first axial portion and said second axial portion being engaged with said first spring-receiving section of said retainer and said second spring-receiving section of said retainer, respectively, and with an intermediate axial portion thereof being located under said connecting shaft and contacted with said connecting shaft.
11 more elements
Dependencies are inferred from the claim text.