Disassemblable folding chair

Abstract

The invention is to a type of disassemblable folding chair that includes supports legs on two sides and an upholstered seat back. The support legs include front-tilting support bars and rear-tilting support bars that are cross-hinged with movable hinge joints. Within this structure, the front-tilting support bars on the two sides and the rear-tilting support bars on the two sides are joined together by two cross-hinged diagonal bars. One end of the diagonal bars is directly hinged onto the two front-tilting and rear-tilting support bars; the other end is hinged on the front-tilting and rear-tilting support bars via a detachable structure. When disassembled, the two support legs can be folded together.

Claims

1. A disassemblable folding chair including: two pairs of support legs, wherein one pair of the two support legs on is on a first side of the chair and one pair of the two support legs on a second side of the chair: an upholstered seat back; each pair of support legs is formed by a front-tilting support bar hinged to a rear-tilting support bar; a pair of front diagonal bars are connected between the front-tilting support bar of the first pair of support legs and the front-tilting support bar of the second pair of support legs by a moveable hinge; a pair of rear diagonal bar pair are connected between the rear-tilting support bar of the first pair of support legs and the rear-tilting support bar of the second pair of support legs by a moveable hinge, the two rear-tilting support bars are taller than the two front-tilting support bars, and a portion of the taller support bars extends upward to provide a support for the seat back; wherein one end of the pair of front diagonal bars is directly hinged to the two front-tilting support bars, and an other end of the pair of front diagonal bars is hinged on the front-tilting support bars by a detachable structure; one end of the pair of rear diagonal bars is directly hinged onto the two rear-tilting support bars; and an other end of the pair of rear diagonal bars is mounted on the rear-tilting support bars via a detachable structure.

2. The disassemblable folding chair of claim 1, wherein a position of the detachable structure located on one end of the pair of front diagonal bars and the pair of rear diagonal bars is secured by a bolt, and includes a plastic component affixed to the detachable positions that correspond to the front-tilting support bars and the rear-tilting support bars, where the plastic component has a bolt hole so that the bolt can be screwed thereto.

3. The disassemblable folding chair of claim 1, wherein the movable hinge that joins the front-tilting support bar and the rear-tilting support bar adopts one of the following two structures: 1) the front-tilting support bar and the rear-tilting support bar are crossed and hinged together by a rivet; or 2) the rear-tilting support bar is mounted with a sliding cap on the top; the front-tilting support bar passes through that sliding cap to create the movable hinge.

4. The disassemblable folding chair of claim 1, wherein the rear-tilting support bar has a sectional structure which includes a support section and a seat back section; The seat back section is inserted at the end of the support section to be integrally connected to each other; and The upholstered seat back cushion is attached to the upper portion of the seat back area and the upper portion of the front-tilting support bars.

5. The disassemblable folding chair of claim 4, wherein the upper portion of the seat back area is mounted with an immovable plastic component for seat back, and the upper portion of the front-tilting support bars is mounted with an immovable plastic component for the seat; and the upholstered seat back cushions are directly affixed to the plastic components for the seat and the seat back.

6. The disassemblable folding chair of claim 5, wherein the plastic component for the seat is mounted securely on a short bar so that it is immovable, and the insertion of a short bar in the upper portion of the front-tilting support bars creates a fixed positioning structure.

7. The disassemblable folding chair of claim 4, wherein a diameter of the seat back section and a diameter of the support section of the rear-tilting support bars are identical to each other; and a core tube is inserted in the lower part of the seat back section, wherein the core tube is also inserted into the upper part of the support section so that the two sections are joined together as one unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a 3D illustration of the disassemblable folding chair.

(2) FIG. 2 is an illustration of the support legs of the disassemblable folding chair.

(3) FIG. 3 is an illustration of the support legs of the disassemblable folding chair, folded.

(4) FIG. 4 is an illustration of the support legs and the seat back of the disassemblable folding chair, disassembled.

(5) FIG. 5 is an illustration of the disassemblable folding chair with upholstered seat back, disassembled.

(6) Similar reference characters denote corresponding features consistently throughout the attached drawings. Namely, in the drawings the following reference numbers refer to the following parts: 1upholstered seat back 2front-tilting support bar 3rear-tilting support bar 31support section 32seat back section 321core tube 4front diagonal bar pair 5rear diagonal bar pair 6plastic component 7plastic component for the seat 71short bar 8plastic component for the seat back 9woven belt

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

(7) With reference to FIG. 1 to FIG. 4, the disassemblable folding chair includes an upholstered seat back 1 and two support legs on both sides. The support legs include front-tilting support bars 2 and rear-tilting support bars 3 that are crossed-hinged with movable hinge joints. The movable hinge that joins the front-tilting support bar 2 and the rear-tilting support bar 3 together belongs to one of the following two structures: 1) the front-tilting support bar 2 and the rear-tilting support bar 3 are crossed and joined together by a rivet hinge, as illustrated in FIG. 2. It is a direct crossed-hinge connection; or 2) the rear-tilting support bar 3 is mounted with a sliding cap on the top, and the front-tilting support bar 2 passes through that sliding cap to create the movable hinge. This design is characterized by its ability to support weight and its flexibility for the cross-hinged joint to move freely. It offers exceptional convenience during the unfolding and folding process, as well as providing a better seat design.

(8) The front-tilting support bars 2 on the two sides and the rear-tilting support bars 3 on the two sides are joined together by diagonal bars to form a single unit.

(9) Connecting the front-tilting support bars 2 on both sides are a pair of cross-hinged front diagonal bars 4. One end of the front diagonal bar pair 4 is directly hinged onto the two front-tilting support bars 2. The other end is hinged on the front-tilting support bars through a detachable structure.

(10) Connecting the rear-tilting support bars 3 on both sides are a pair of cross-hinged rear diagonal bars 5. One end of the rear diagonal bar pair 5 is directly hinged onto the two rear-tilting support bars 3; the other end is hinged on the rear-tilting support bars via a detachable structure.

(11) On the end of the front diagonal bar pair 4 and the rear diagonal bar pair 5, the position of the detachable structure is secured by a bolt. There should be a plastic component 6 affixed to each of the detachable positions that corresponds to the front-tilting support bars 2 and the rear-tilting support bars 3. That plastic component 6 has a bolt hole so that the aforementioned bolt can be screwed on. Once the bolt is unscrewed, one end of the front and rear diagonal bars 4, 5 will be detached from the restraint of the plastic component 6. The diagonal bars will follow the support legs on both sides to be folded together at the same time.

(12) The rear-tilting support bars 3 are taller than the front-tilting support bars 2, with the taller portion providing support for the seat back. As such, the rear-tilting support bars adopt a sectional structure that includes a support section 31 and a seat back section 32. The seat back section 32 is inserted at the end of the support section 31 to be integrally connected to each other. Furthermore, the diameters of the seat back section 32 and the support section 31 of the rear-tilting support bars 3 are preferably identical. A core tube 321 is inserted in the lower part of the seat back section 32. This core tube 321 is also inserted into the upper part of the support section 31 so that the two sections are joined together as one unit.

(13) The upholstered seat back cushions 1 are attached to the upper portion of the seat back area 32 and the upper portion of the front-tilting support bars 2. This creates an integrated design so that the seat back may be positioned upright or reclined.

(14) In order for the upholstered seat back to receive better support, a plastic component for the seat 7 is installed on the upper part of the front-tilting support bars 2, and an immovable plastic component for the seat back 8 is mounted on the upper portion of the seat back 32. The upholstered seat back cushion 1 is directly affixed to the aforementioned plastic components for the seat 7 and the seat back 8.

(15) With reference to FIGS. 1, 2 and 5, the immovable plastic component for the seat 7 is mounted on a short bar 71. The insertion of a short bar 71 in the upper portion of the front-tilting support bars 2 creates a fixed positioning structure. It allows the upholstered seat 1 to be disassembled at the same time, offering convenience for folding and storage. In this structure, a symmetrical design for the front-tilting support bars 2 and the rear-tilting supports bars 3 may be used. The symmetrical design is a more flexible design option. It allows the short bar 71 and the seat back section 32 to be freely inserted in the front-tilting support bars 2 or the seat back section 32 of the rear-tilting support bars.

(16) As illustrated in FIG. 2, other than using the chair seat to restrain the opening angle, a woven belt 9 may be used between the font-tilting support bars 2 and the rear-tilting support bars 3. One end of the woven belt may be securely tied to the upper part of the front-tilting support bars 2, while the other end is securely tied to the rear-tilting support bars 3 at a position that corresponds to their height. This creates a form of restraint and offers support for opposite-facing upholstered seat back 1 and the two sides of the chair seat. Alternatively, a plastic component may be used at the crossed-hinge joint of the front-tilting support bars 2 and the rear-tilting support bars 3 to limit the angle of opening.