FOLDING CHAIR
A folding chair includes a front leg frame, a rear leg frame and a backrest frame pivotally coupled to a seat. The rear leg frame is slidably coupled to a pair of spaced apart slots on a bottom portion of the seat. Each component is positioned such that in an open configuration the backrest frame is supported by the front leg frame, and the rear leg frame engages front ends of the slots such that the front leg frame forms an X-shape with respect to the rear leg frame, and in a folded configuration the front leg frame, rear leg frame, backrest frame and seat are positioned substantially co-planar to each other.
This application is a continuation-in-part of pending PCT Application Nos. PCT/CN2010/078722, filed on Nov. 15, 2010, and PCT/CN2011/070166, filed on Jan. 11, 2011, both of which claim priority to and benefit of China Application No. 201020147009.2, filed on Mar. 23, 2010. This application claims priority to and benefit of all of the above mentioned applications which are incorporated by reference in their entireties.
BACKGROUND OF THE INVENTIONThe present invention relates generally to chairs and, more particularly, relates to a folding chair.
Compared to other seating devices, folding chairs offer the advantages of being compact and lightweight. Generally, folding chairs are easier to store and transport than are non-folding chairs. Further, folding chairs may often be purchased at a lower cost than non-folding chairs.
Folding chairs are designed and manufactured in a variety of forms. Typically, however, a folding chair consists of a seat, a backrest, and foldable support structures, including front and rear legs. In an open configuration, the seat supports the weight of a person while the backrest provides support for the person's back, so the person may comfortably lean back while seated. In a folded configuration, the components fold together, often overlapping, for storage and/or transport.
In most conventional foldable chairs, as shown for example in
What is needed, therefore, is a folding chair that is stable and secure when unfolded and in use, which folds into a substantially flat, compact package with reduced length for more convenient transport and storage.
BRIEF SUMMARY OF THE INVENTIONThe following presents a simplified summary of some embodiments of the invention in order to provide a basic understanding of the invention. This summary is not an extensive overview of the invention. It is not intended to identify key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some embodiments of the invention in a simplified form as a prelude to a more detailed description that is presented later.
Briefly stated, in one aspect, the present invention provides a folding chair configurable into an open configuration and a folded configuration, the folding chair comprising: a front leg frame comprising a pair of spaced apart front legs in a substantially parallel arrangement; a rear leg frame comprising a pair of spaced apart rear legs in a substantially parallel arrangement, the front and rear leg frames pivotally coupled to each other; a seat comprising opposing top and bottom portions, and a pair of opposing side portions, a pair of opposing side members each extending from a corresponding side portion, the bottom portion comprising a pair of spaced apart slots extending between front and rear portions of the seat, upper ends of each rear leg slidably coupled to a corresponding slot; and a backrest frame comprising a pair of spaced apart upper backrest support members in a substantially parallel arrangement, lower ends of each upper backrest support member connected by a lower backrest support member, a backrest disposed on upper portions of each upper backrest support member, lower portions of each upper backrest support member and upper portions of each corresponding front leg collectively fixedly pivotally coupled to a rear portion of each side member of the seat; wherein in the open configuration the backrest is substantially upright and the lower backrest support member contacts the front leg frame, and each rear leg upper end engages a front end of a corresponding slot such that the front leg frame forms an X-shape with respect to the rear leg frame, and wherein in the folded configuration the backrest frame pivots toward and overlaps with the seat, each rear leg upper end engages a rear end of a corresponding slot such that the front and rear leg frames are pivoted toward each other to a substantially parallel arrangement, and the overlapped backrest and seat are further collectively pivoted toward and overlap with the substantially parallel front and rear leg frames.
In another aspect, the present invention provides a folding chair configurable into an open configuration and a folded configuration, the folding chair comprising: a front leg frame comprising a pair of spaced apart front legs in a substantially parallel arrangement; a rear leg frame comprising a pair of spaced apart rear legs in a substantially parallel arrangement, the front and rear leg frames pivotally coupled to each other; a seat comprising opposing top and bottom portions, the bottom portion comprising a pair of spaced apart slots in substantially parallel arrangement, each slot extending between front and rear portions of the seat, upper ends of each rear leg slidably coupled to a corresponding slot, upper ends of each front leg pivotally coupled to the seat; and a backrest frame comprising a pair of spaced apart upper backrest support members in a substantially parallel arrangement, the backrest frame being independent and separate from the front and rear leg frames, lower ends of each upper backrest support member having a lower backrest support member extending substantially perpendicular therefrom, lower portions of each upper backrest support member pivotally coupled to the seat.
In yet another aspect, the present invention provides a folding chair configurable into an open configuration and a folded configuration, the folding chair comprising: a front leg frame comprising a pair of spaced apart front legs in a substantially parallel arrangement; a rear leg frame comprising a pair of spaced apart rear legs in a substantially parallel arrangement, the front and rear leg frames pivotally coupled to each other; a seat comprising opposing top and bottom portions, and opposing side portions, the bottom portion comprising a pair of spaced apart slots in substantially parallel arrangement, each slot extending between front and rear portions of the seat, upper ends of each rear leg slidably coupled to a corresponding slot, upper ends of each front leg pivotally coupled to the seat; and a backrest frame comprising a pair of spaced apart upper backrest support members in a substantially parallel arrangement, the backrest frame being independent and separate from the front and rear leg frames, lower ends of each upper backrest support member having a lower backrest support member extending substantially perpendicular therefrom, lower portions of each upper backrest support member pivotally coupled to the seat; wherein in the open configuration the backrest frame is substantially upright and each lower backrest support member contacts the front leg frame, and upper ends of each rear leg engages a front end of a corresponding slot such that the front leg frame forms an X-shape with respect to the rear leg frame, and wherein in the folded configuration the backrest frame pivots toward and overlaps with the top portion of the seat, each rear leg upper end engages a rear end of a corresponding slot such that the front and rear leg frames are pivoted toward each other to a substantially parallel arrangement, and the overlapped backrest frame and seat are further collectively pivoted toward and overlap with the substantially parallel front and rear leg frames such that the front leg frame, the rear leg frame, the backrest frame and the seat side portions are positioned substantially co-planar to each other.
To better understand the present invention, a more particular description of the invention will be rendered by reference to the appended drawings.
To facilitate an understanding of the invention, identical reference numerals have been used, when appropriate, to designate the same or similar elements that are common to the figures. Further, unless stated otherwise, the features shown in the figures are not drawn to scale, but are shown for illustrative purposes only.
DETAILED DESCRIPTIONCertain terminology is used in the following description for convenience only and is not limiting. To assist in the description of the present invention, words such as “top,” “bottom,” “front,” “rear,” “back,” “upper,” “lower,” “right” and “left” are used to describe the accompanying figures. Also, the article “a” is intended to include one or more items. Where only one item is intended, the term “one” or similar language is used. The terminology includes the words above specifically mentioned, derivatives thereof, and words of similar import.
Referring to
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As shown in
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The frame of the folding chair 100, including the leg frame assembly 2 and the backrest frame 3 is preferably constructed of hollow tubular steel or steel alloy to provide strength and to minimize weight while reducing material cost. One of ordinary skill in the art will recognize that other materials such as aluminum could be used for the overall frame to further reduce the weight of the folding chair 1 without departing from the spirit and scope of the invention.
Referring to
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims
1. A folding chair configurable into an open configuration and a folded configuration, the folding chair comprising:
- a front leg frame comprising a pair of spaced apart front legs in a substantially parallel arrangement;
- a rear leg frame comprising a pair of spaced apart rear legs in a substantially parallel arrangement, the front and rear leg frames pivotally coupled to each other;
- a seat comprising opposing top and bottom portions, and a pair of opposing side portions, a pair of opposing side members each extending from a corresponding side portion, the bottom portion comprising a pair of spaced apart slots extending between front and rear portions of the seat, upper ends of each rear leg slidably coupled to a corresponding slot; and
- a backrest frame comprising a pair of spaced apart upper backrest support members in a substantially parallel arrangement, lower ends of each upper backrest support member connected by a lower backrest support member, a backrest disposed on upper portions of each upper backrest support member, lower portions of each upper backrest support member and upper portions of each corresponding front leg collectively fixedly pivotally coupled to a rear portion of each side member of the seat;
- wherein in the open configuration the backrest is substantially upright and the lower backrest support member contacts the front leg frame, and each rear leg upper end engages a front end of a corresponding slot such that the front leg frame forms an X-shape with respect to the rear leg frame, and
- wherein in the folded configuration the backrest frame pivots toward and overlaps with the seat, each rear leg upper end engages a rear end of a corresponding slot such that the front and rear leg frames are pivoted toward each other to a substantially parallel arrangement, and the overlapped backrest and seat are further collectively pivoted toward and overlap with the substantially parallel front and rear leg frames.
2. The folding chair of claim 1, wherein the rear leg frame having a width narrower than the front leg frame, the rear leg frame positioned on an inner portion of the front leg frame.
3. The folding chair of claim 1, wherein in the folded configuration, the front leg frame, the rear leg frame, the backrest frame and the seat side members are positioned substantially co-planar to each other.
4. The folding chair of claim 1, wherein at least one of the front and rear leg frames further comprises a transverse leg support member fixedly connected to the pair of legs.
5. The folding chair of claim 1, wherein the seat is constructed by a method selected from a group comprising blow molding and injection molding.
6. The folding chair of claim 1, further comprising a plurality of reinforcement ridges formed on the bottom portion of the seat.
7. The folding chair of claim 6, wherein each slot is formed on a seat frame fixedly connected to the bottom portion of the seat between two of the plurality of reinforcement ridges.
8. A folding chair configurable into an open configuration and a folded configuration, the folding chair comprising:
- a front leg frame comprising a pair of spaced apart front legs in a substantially parallel arrangement;
- a rear leg frame comprising a pair of spaced apart rear legs in a substantially parallel arrangement, the front and rear leg frames pivotally coupled to each other;
- a seat comprising opposing top and bottom portions, the bottom portion comprising a pair of spaced apart slots in substantially parallel arrangement, each slot extending between front and rear portions of the seat, upper ends of each rear leg slidably coupled to a corresponding slot, upper ends of each front leg pivotally coupled to the seat; and
- a backrest frame comprising a pair of spaced apart upper backrest support members in a substantially parallel arrangement, the backrest frame being independent and separate from the front and rear leg frames, lower ends of each upper backrest support member having a lower backrest support member extending substantially perpendicular therefrom, lower portions of each upper backrest support member pivotally coupled to the seat.
9. The folding chair of claim 8, wherein in the open configuration the backrest frame is substantially upright and each lower backrest support member contacts the front leg frame, and upper ends of each rear leg engages a front end of a corresponding slot such that the front leg frame forms an X-shape with respect to the rear leg frame.
10. The folding chair of claim 8, wherein in the folded configuration the backrest pivots toward and overlaps with the top portion of the seat, each rear leg upper end engages a rear end of a corresponding slot such that the front and rear leg frames are pivoted toward each other to a substantially parallel arrangement, and the overlapped backrest and seat are further collectively pivoted toward and overlap with the substantially parallel front and rear leg frames.
11. The folding chair of claim 8, wherein each slot is formed on a seat frame fixedly connected to the bottom portion of the seat.
12. The folding chair according to claim 8, wherein a lower portion of the backrest frame and an upper portion of the front leg frame are collectively fixedly pivotally coupled to the seat.
13. The folding chair according to claim 8, wherein each lower backrest support member is connected to each other.
14. The folding chair according to claim 8, further comprising a pair of opposing side members each extending from opposing side portions of the seat.
15. The folding chair of claim 14, wherein in the folded configuration the front leg frame, the rear leg frame, the backrest frame and the seat side members are positioned substantially co-planar to each other.
16. The folding chair according to claim 14, wherein lower portions of each upper backrest support member and upper portions of each corresponding front leg are collectively fixedly pivotally coupled to a rear portion of each side member of the seat.
17. The folding chair of claim 8, wherein the rear leg frame has a width narrower than the front leg frame, the rear leg frame positioned on an inner portion of the front leg frame.
18. The folding chair of claim 17, wherein the bottom portion of the seat comprises a plurality of reinforcement ridges.
19. The folding chair of claim 18, wherein a pair of outer channels are formed by the plurality of reinforcement ridges for receiving corresponding adjacent front and rear legs in the folded configuration.
20. A folding chair configurable into an open configuration and a folded configuration, the folding chair comprising:
- a front leg frame comprising a pair of spaced apart front legs in a substantially parallel arrangement;
- a rear leg frame comprising a pair of spaced apart rear legs in a substantially parallel arrangement, the front and rear leg frames pivotally coupled to each other;
- a seat comprising opposing top and bottom portions, and opposing side portions, the bottom portion comprising a pair of spaced apart slots in substantially parallel arrangement, each slot extending between front and rear portions of the seat, upper ends of each rear leg slidably coupled to a corresponding slot, upper ends of each front leg pivotally coupled to the seat; and
- a backrest frame comprising a pair of spaced apart upper backrest support members in a substantially parallel arrangement, the backrest frame being independent and separate from the front and rear leg frames, lower ends of each upper backrest support member having a lower backrest support member extending substantially perpendicular therefrom, lower portions of each upper backrest support member pivotally coupled to the seat;
- wherein in the open configuration the backrest frame is substantially upright and each lower backrest support member contacts the front leg frame, and upper ends of each rear leg engages a front end of a corresponding slot such that the front leg frame forms an X-shape with respect to the rear leg frame, and
- wherein in the folded configuration the backrest frame pivots toward and overlaps with the top portion of the seat, each rear leg upper end engages a rear end of a corresponding slot such that the front and rear leg frames are pivoted toward each other to a substantially parallel arrangement, and the overlapped backrest frame and seat are further collectively pivoted toward and overlap with the substantially parallel front and rear leg frames such that the front leg frame, the rear leg frame, the backrest frame and the seat side portions are positioned substantially co-planar to each other.
Type: Application
Filed: Aug 31, 2012
Publication Date: Dec 20, 2012
Inventor: KWAN JUN CHOI (Hamyang-Gun)
Application Number: 13/601,238
International Classification: A47C 4/00 (20060101);