摘要：
A chair frame comprises an assembly bracket having a connector bar, a first lateral bracket fastened on a first side of the connector bar, and a second lateral bracket fastened on a second side of the connector bar. A seat portion having side edges is mounted on the first lateral bracket and the second lateral bracket respectively. A back portion is mounted on the first lateral bracket and the second lateral bracket. At least a portion of the chair frame is comprised of extruded or 3D printed plastic material.
权利要求：
CLAIMS:
1. A chair frame comprising: an assembly bracket having a connector bar, a first lateral bracket fastened on a first side of the connector bar, and a second lateral bracket fastened on a second side of the connector bar; a seat portion having side edges which are mounted on the first lateral bracket and the second lateral bracket respectively; and a back portion mounted on the first lateral bracket and the second lateral bracket.
2. A chair frame as claimed in claim 1 wherein at least one of the seat portion and the back portion are comprised of plastic.
3. A chair frame as claimed in claim 2 wherein the seat portion and the back portion are manufactured by one or more of the following processes: molding, injection, extrusion or 3D printing.
4. A chair frame as claimed in claim 1 further comprising a first lateral armrest and a second lateral armrest each of which is adjacent a side edge of the seat portion respectively.
5. A chair frame as claimed in claim 4 wherein the first lateral armrest and the second lateral armrest are attached to the respective side edges of the seat portion.
6. A chair frame as claimed in claim 4 wherein the first lateral armrest and the second lateral armrest are attached to the first lateral bracket and second lateral bracket respectively.
7. A chair frame as claimed in claim 1 wherein the back portion comprises a frame component defining a space and a back panel portion which attaches to the frame component and fills at least a part of the space.
8. A chair frame as claimed in claim 1 wherein the seat portion comprises a four-sided frame, a plurality of spring members extending from a front of the seat portion to a
back of the seat portion, the seat portion having connector tabs for connecting the spring members thereto.
9. A chair frame as claimed in claim 1 wherein the assembly bracket is configured so as to allow selected movement of the seat portion between variable substantially horizontal positions and selected movement of the back portion between a generally upright position and a generally inclined position.
10. A chair frame as claimed in claim 4 wherein each of the first and second lateral armrests is comprised of an inner panel and an outer panel, the outer panel being connectible to the inner panel.
11. A chair frame as claimed in claim 10 wherein at least one of the inner panel and outer panel is comprised of plastic and comprises a cross bracing grid to provide additional strength.
12. A chair frame as claimed in claim 1 further comprising a footrest portion movable between a retracted position and an extended position in which it is located in front of the seat portion.
13. A chair frame as claimed in claim 12 wherein the footrest portion comprises a scissor frame and at least one panel mounted on the scissor frame.
14. A chair frame as claimed in claim 1 further comprising additional connection structures for attaching accessories to the chair frame.
15. A chair frame comprising: an assembly bracket having a connector bar, a first lateral bracket fastened on a first side of the connector bar, and a second lateral bracket fastened on a second side of the connector bar; a seat portion comprised of plastic and having side edges which are mounted on the first lateral bracket and the second lateral bracket respectively,
a back portion comprised of plastic and mounted on the first lateral bracket and the second lateral bracket; and a pair of first and second lateral armrest portions comprised of plastic and mounted on the first lateral bracket and the second lateral bracket respectively, the assembly bracket being configured so as permit relative movement between at least the seat portion and the back portion of the chair frame when assembled.
16. A chair frame as claimed in claim 15 further comprising a foot portion connected to the assembly bracket, the foot portion being movable between a retraced position and an extended position.
17. A method of making a chair comprising: providing an assembly bracket including a connector bar, fastening the connector bar to a first lateral bracket on a first side of the connector bar, and fastening the connector bar to a second lateral bracket on a second side of the connector bar; mounting a seat portion having side edges on the first lateral bracket and the second lateral bracket respectively; and mounting a back portion on the first lateral bracket and the second lateral bracket.
18. A method as claimed in claim 17 wherein the seat portion and back portion are comprised of extruded or 3D printed plastic material.
19. A method as claimed in claim 17 further comprising the steps of: mounting first and second armrests on the first lateral bracket and the second lateral bracket; mounting a footrest on the assembly bracket, the footrest being movable between a retraced position and an extended position; and wherein the first and second armrests are comprised of extruded or 3D printed plastic material.
20. A method as claimed in claim 17 wherein the assembly bracket is configured to as permit relative movement between at least the seat portion and the back portion of the chair frame when assembled.
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