Sigma-shaped folding chair

Abstract

The utility model discloses a sigma-shaped folding chair, which comprises a first support component, a second support component, a first folding component and a second folding component, the first support component and the second support component are symmetrically arranged on two sides, the first folding component is arranged at the left ends of the first support component and the second support component, and the second folding component is arranged at the right end of the second support component. The second folding assembly is arranged at the right ends of the first supporting assembly and the second supporting assembly, the first supporting assembly comprises a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod, and the top end of the second supporting rod is hinged to the upper end of the first supporting rod; the lower end of the third supporting rod is hinged to the upper end of the second supporting rod, and the left end of the fourth supporting rod is hinged to the left end of the first supporting rod. The sigma-shaped folding chair provided by the utility model is free to fold and unfold, and through the sigma-shaped design, the first folding rod and the fifth folding rod play a stable supporting effect when being inverted, and the sigma-shaped folding chair is convenient and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of folding chair structure, specifically relating to a Σ-shaped folding chair. Background Technology

[0002] Folding chairs are easy to fold and carry, making them suitable not only for outdoor and temporary use but also as essential emergency items for the home. Currently, traditional folding chairs typically consist of a folding frame and a supporting fabric cover, with the frame made up of multiple support rods. However, current folding chairs still have certain limitations, especially in terms of placement. They either need to be placed against something or simply laid flat on a surface, neither of which is convenient or reliable. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a Σ-shaped folding chair.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A Σ-shaped folding chair includes a first support assembly, a second support assembly, a first folding assembly, and a second folding assembly. The first and second support assemblies are symmetrically arranged on both sides of the first and second folding assemblies. The first folding assembly is located at the left end of the first and second support assemblies, and the second folding assembly is located at the right end of the first and second support assemblies. The first support assembly includes a first support rod, a second support rod, a third support rod, and a fourth support rod. The top end of the second support rod is hinged to the upper end of the first support rod, the lower end of the third support rod is hinged to the upper end of the second support rod, and the left end of the fourth support rod is hinged to the left end of the first support rod. The second folding assembly includes a fifth support rod, a sixth support rod, a seventh support rod, and an eighth support rod. The top end of the sixth support rod is hinged to the upper end of the fifth support rod, the lower end of the seventh support rod is hinged to the upper end of the sixth support rod, and the left end of the eighth support rod is hinged to the left end of the fifth support rod.

[0006] Furthermore, the first folding assembly includes a first folding rod, a second folding rod, and a third folding rod. The upper end of the first folding rod is hinged to the left end of the first support rod, and the lower end of the first folding rod is hinged to the lower end of the sixth support rod. The upper end of the second folding rod is hinged to the left end of the fifth support rod, and the lower end of the third folding rod is hinged to the lower end of the second support rod. A first rotating piece is hinged to the middle of the first folding rod, the lower end of the second folding rod is connected to the upper end of the first rotating piece, and the upper end of the third folding rod is connected to the first rotating piece.

[0007] Furthermore, the second folding assembly includes a fourth folding rod, a fifth folding rod, and a sixth folding rod. The upper end of the fourth folding rod is hinged to the upper end of the third support rod, the lower end of the fourth folding rod is hinged to the lower end of the fifth support rod, the upper end of the fifth folding rod is hinged to the upper end of the seventh support rod, and the lower end of the sixth folding rod is hinged to the lower end of the first support rod. A second rotating piece is hinged to the middle of the fourth folding rod, the lower end of the fifth folding rod is connected to the upper end of the second rotating piece, and the upper end of the sixth folding rod is connected to the second rotating piece.

[0008] Furthermore, the left end of the first support rod is provided with a first adapter, the left end of the fourth support rod is hinged to the upper end of the first adapter, the lower end of the first adapter is provided with a first positioning protrusion, the left end of the fourth support rod is provided with a first positioning hole, and the first positioning hole corresponds one-to-one with the first positioning protrusion; the left end of the fifth support rod is provided with a second adapter, the left end of the eighth support rod is hinged to the upper end of the second adapter, the lower end of the second adapter is provided with a second positioning protrusion, the left end of the eighth support rod is provided with a second positioning hole, and the second positioning hole corresponds one-to-one with the second positioning protrusion.

[0009] Furthermore, the lower end of the first support rod is provided with a first reinforcing part, and the lower end of the second support rod is provided with a second reinforcing part, the first reinforcing part and the second reinforcing part being spirally twisted.

[0010] Furthermore, the front end of the second support rod is provided with a first decorative plate, the rear end of the sixth support rod is provided with a second decorative plate, the upper end of the first support rod is provided with a third decorative plate, and the upper end of the fifth support rod is provided with a fourth decorative plate.

[0011] Furthermore, the right end of the fourth support rod is provided with a first hanging piece, and the lower right end of the first hanging piece is provided with a first hanging opening; the right end of the eighth support rod is provided with a second hanging piece, and the lower right end of the second hanging piece is provided with a second hanging opening.

[0012] Furthermore, both ends of the fourth support rod and both ends of the eighth support rod are provided with first pads.

[0013] Furthermore, the Σ-shaped folding chair includes a first hinge piece and a second hinge piece. The first support rod has a first limiting piece in its middle portion, and the first limiting piece has a first adjusting hole in its middle portion. The upper end of the first hinge piece is hinged to the middle portion of the third support rod, and one end of the first hinge piece is hinged to the first limiting piece through the first adjusting hole. The fifth support rod has a second limiting piece in its middle portion, and the second limiting piece has a first adjusting hole in its middle portion. The upper end of the second hinge piece is hinged to the middle portion of the seventh support rod, and one end of the second hinge piece is hinged to the second limiting piece through the second adjusting hole.

[0014] The Σ-shaped folding chair disclosed in this utility model has the following advantages compared with the prior art: its structure is simple and stable. It can be folded and unfolded freely. Moreover, through the Σ-shaped design, the first folding rod and the fifth folding rod can provide stable support when inverted, without relying on other objects for placement, making it more convenient and reliable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure when the device is folded up, as provided by this utility model.

[0016] Figure 2 This is a schematic diagram of the structure from one perspective when the device is unfolded, as provided by this utility model.

[0017] Figure 3 This is a structural schematic diagram of the present invention from another perspective when the item is folded up.

[0018] Figure 4 This is a schematic diagram of the structure of the first pad provided by this utility model.

[0019] Figure 5 This is a structural schematic diagram of the first pendant provided by this utility model.

[0020] Figure 6 This is a structural schematic diagram of the first decorative panel provided by this utility model.

[0021] Figure 7 This is a schematic diagram of the structure of the first positioning protrusion provided by this utility model.

[0022] Figure 8 This is a schematic diagram of the structure of the second hinge piece provided by this utility model.

[0023] The reference numerals in the attached drawings include: 110, first support rod; 120, second support rod; 130, third support rod; 140, fourth support rod; 141, first positioning hole; 150, first hanger; 151, first hanging opening; 160, first adapter; 161, first positioning protrusion; 170, first pad; 210, fifth support rod; 220, sixth support rod; 230, seventh support rod; 240, eighth support rod; 250, second hanger; 251, second hanging opening; 260, second limiting piece; 261, first limiting hole; 270, second hinge piece; 310, first folding rod; 320, second folding rod; 330, third folding rod; 340, first rotating piece; 410, fourth folding rod; 420, fifth folding rod; 430, sixth folding rod; 440, second rotating piece. Detailed Implementation

[0024] This utility model discloses a Σ-shaped folding chair. The specific implementation of this utility model will be further described below with reference to preferred embodiments.

[0025] See attached diagram. Figure 1-8 , Figure 1 This is a schematic diagram of the structure when the device is folded up, as provided by this utility model. Figure 2 This is a schematic diagram of the structure from one perspective when the device is unfolded, as provided by this utility model. Figure 3 This is a structural schematic diagram from another perspective when the device is folded up, as provided by this utility model. Figure 4 This is a structural schematic diagram of the first pad 170 provided by this utility model. Figure 5 This is a structural schematic diagram of the first hanging component 150 provided by this utility model. Figure 6 This is a structural schematic diagram of the first decorative panel provided by this utility model. Figure 7 This is a structural schematic diagram of the first positioning protrusion 161 provided by this utility model. Figure 8 This is a schematic diagram of the structure of the second hinge piece 270 provided by this utility model.

[0026] First embodiment.

[0027] This embodiment provides a Σ-shaped folding chair, including a first support assembly, a second support assembly, a first folding assembly, and a second folding assembly. The first and second support assemblies are symmetrically arranged on both sides of the first and second folding assemblies, with the first folding assembly located at the left end and the second folding assembly located at the right end. The first support assembly includes a first support rod 110, a second support rod 120, a third support rod 130, and a fourth support rod 140. The top end of the second support rod 120 is connected to the first support rod 130. The upper end of a support rod 110 is hinged to the upper end of the third support rod 130, the lower end of the third support rod 130 is hinged to the upper end of the second support rod 120, and the left end of the fourth support rod 140 is hinged to the left end of the first support rod 110; the second folding assembly includes a fifth support rod 210, a sixth support rod 220, a seventh support rod 230, and an eighth support rod 240. The top end of the sixth support rod 220 is hinged to the upper end of the fifth support rod 210, the lower end of the seventh support rod 230 is hinged to the upper end of the sixth support rod 220, and the left end of the eighth support rod 240 is hinged to the left end of the fifth support rod 210.

[0028] Further, the first folding assembly includes a first folding rod 310, a second folding rod 320, and a third folding rod 330. The upper end of the first folding rod 310 is hinged to the left end of the first support rod 110, and the lower end of the first folding rod 310 is hinged to the lower end of the sixth support rod 220. The upper end of the second folding rod 320 is hinged to the left end of the fifth support rod 210, and the lower end of the third folding rod 330 is hinged to the lower end of the second support rod 120. A first rotating piece 340 is hinged to the middle of the first folding rod 310. The lower end of the second folding rod 320 is connected to the upper end of the first rotating piece 340, and the upper end of the third folding rod 330 is connected to the first rotating piece 340.

[0029] Further, the second folding assembly includes a fourth folding rod 410, a fifth folding rod 420, and a sixth folding rod 430. The upper end of the fourth folding rod 410 is hinged to the upper end of the third support rod 130, and the lower end of the fourth folding rod 410 is hinged to the lower end of the fifth support rod 210. The upper end of the fifth folding rod 420 is hinged to the upper end of the seventh support rod 230, and the lower end of the sixth folding rod 430 is hinged to the lower end of the first support rod 110. A second rotating piece 440 is hinged to the middle of the fourth folding rod 410. The lower end of the fifth folding rod 420 is connected to the upper end of the second rotating piece 440, and the upper end of the sixth folding rod 430 is connected to the second rotating piece 440.

[0030] Furthermore, the left end of the first support rod 110 is provided with a first adapter 160, the left end of the fourth support rod 140 is hinged to the upper end of the first adapter 160, the lower end of the first adapter 160 is provided with a first positioning protrusion 161, the left end of the fourth support rod 140 is provided with a first positioning hole 141, the first positioning hole 141 corresponds one-to-one with the first positioning protrusion 161, the left end of the fifth support rod 210 is provided with a second adapter, the left end of the eighth support rod 240 is hinged to the upper end of the second adapter, the lower end of the second adapter is provided with a second positioning protrusion, the left end of the eighth support rod 240 is provided with a second positioning hole, the second positioning hole corresponds one-to-one with the second positioning protrusion.

[0031] Furthermore, both ends of the fourth support rod 140 and both ends of the eighth support rod 240 are provided with first pads 170.

[0032] Furthermore, the Σ-shaped folding chair includes a first hinge piece and a second hinge piece 270. The first support rod 110 has a first limiting piece at its middle portion, and the first limiting piece has a first adjusting hole at its middle portion. The upper end of the first hinge piece is hinged to the middle portion of the third support rod 130, and one end of the first hinge piece is hinged to the first limiting piece through the first adjusting hole. The fifth support rod 210 has a second limiting piece 260 at its middle portion, and the second limiting piece 260 has a first adjusting hole at its middle portion. The upper end of the second hinge piece 270 is hinged to the middle portion of the seventh support rod 230, and one end of the second hinge piece 270 is hinged to the second limiting piece 260 through the second adjusting hole.

[0033] Working Principle: When using the Σ-shaped folding chair, unfolding the first support assembly, the second support assembly, the first folding assembly, and the second folding assembly—that is, pulling them forward and backward to unfold the first and second folding assemblies, and pulling them left and right to unfold the first and second support assemblies—also unfolds the chair fabric, allowing it to support the user's weight. When unfolding the Σ-shaped folding chair, the first hinge piece, in conjunction with the first limiting piece, provides additional support for the third support rod 130 and acts as a limiter through the first adjustment hole. Similarly, the second hinge piece 270, in conjunction with the second limiting piece 260, provides support for the seventh support rod 230, and the first adjustment hole also acts as a limiter. The first limiting hole 261 and the second limiting hole not only ensure the rotation of the third support rod 130 and the seventh support rod 230 but also ensure their limiting. Meanwhile, the hinge joints of the third support rod 130 and the fourth folding rod 410, as well as the hinge joints of the seventh support rod 230 and the fifth folding rod 420, are all equipped with limiting components to restrict the unfolding angle, thus ensuring stability during unfolding. When the Σ-shaped folding chair is folded up, the first support assembly, the second support assembly, the first folding assembly, and the second folding assembly are all folded up, and the Σ-shaped folding chair is inverted. Since the first support rod 110 and the fifth support rod 210 are Σ-shaped, the Σ-shaped folding chair can be placed flat, ensuring its stability when inverted. In addition, the support of the first pad 170 prevents the chair fabric from contacting the ground when inverted, thus preventing the chair fabric from getting dirty and making it cleaner and more hygienic.

[0034] Second embodiment.

[0035] This embodiment provides a Σ-shaped folding chair. Compared with the first embodiment described above, this embodiment also provides: the lower end of the first support rod 110 is provided with a first reinforcing part, and the lower end of the second support rod 120 is provided with a second reinforcing part, wherein the first reinforcing part and the second reinforcing part are spirally twisted.

[0036] The first and second reinforcing parts in this embodiment enhance the structural strength of the first support rod 110 and the second support rod 120, and are also more aesthetically pleasing.

[0037] Third embodiment.

[0038] This embodiment provides a Σ-shaped folding chair. Compared with the first embodiment described above, this embodiment also provides: a first hanging member 150 is provided at the right end of the fourth support rod 140, and a first hanging hole 151 is provided at the lower right end of the first hanging member 150; a second hanging member 250 is provided at the right end of the eighth support rod 240, and a second hanging hole 251 is provided at the lower right end of the second hanging member 250.

[0039] When the Σ-shaped folding chair is folded up, the first hanging piece 150 and the second hanging piece 250 function as the first pad 170, supporting the chair and preventing the chair fabric from touching the ground directly. Furthermore, when the Σ-shaped folding chair is unfolded, items can be hung using the first hanging opening 151 and the second hanging opening 251, thus serving multiple purposes.

[0040] Fourth embodiment.

[0041] This embodiment provides a Σ-shaped folding chair. Compared with the first embodiment described above, this embodiment also provides: a first decorative plate is provided at the front end of the second support rod 120, a second decorative plate is provided at the rear end of the sixth support rod 220, a third decorative plate is provided at the upper end of the first support rod 110, and a fourth decorative plate is provided at the upper end of the fifth support rod 210.

[0042] The first and second decorative panels can enhance the second support rod 120 and the sixth support rod 220. The third and fourth decorative panels not only serve a decorative purpose, but also, because they are positioned on the armrest, prevent the arms from directly contacting the metal first support rod 110 and the fifth support rod 210, thus avoiding them from becoming scalding hot in summer or icy cold in winter, ensuring a more comfortable user experience.

[0043] It is worth mentioning that the technical features of decorative panels, chair fabrics, etc. involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement methods of these technical features can be adopted using conventional choices in the field, and should not be regarded as the utility model point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0044] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A Σ-shaped folding chair, characterized in that, The system includes a first support component, a second support component, a first folding component, and a second folding component. The first and second support components are symmetrically arranged on both sides of the first and second folding components. The first folding component is located at the left end of the first and second support components, and the second folding component is located at the right end of the first and second support components. The first support component includes a first support rod (110), a second support rod (120), a third support rod (130), and a fourth support rod (140). The top end of the second support rod (120) is hinged to the upper end of the first support rod (110). The lower end of the third support rod (130) is hinged to the upper end of the second support rod (120), and the left end of the fourth support rod (140) is hinged to the left end of the first support rod (110). The second folding assembly includes a fifth support rod (210), a sixth support rod (220), a seventh support rod (230), and an eighth support rod (240). The top end of the sixth support rod (220) is hinged to the upper end of the fifth support rod (210), the lower end of the seventh support rod (230) is hinged to the upper end of the sixth support rod (220), and the left end of the eighth support rod (240) is hinged to the left end of the fifth support rod (210).

2. The Σ-shaped folding chair according to claim 1, characterized in that, The first folding assembly includes a first folding rod (310), a second folding rod (320), and a third folding rod (330). The upper end of the first folding rod (310) is hinged to the left end of the first support rod (110), and the lower end of the first folding rod (310) is hinged to the lower end of the sixth support rod (220). The upper end of the second folding rod (320) is hinged to the left end of the fifth support rod (210), and the lower end of the third folding rod (330) is hinged to the lower end of the second support rod (120). A first rotating piece (340) is hinged to the middle of the first folding rod (310). The lower end of the second folding rod (320) is connected to the upper end of the first rotating piece (340), and the upper end of the third folding rod (330) is connected to the first rotating piece (340).

3. The Σ-shaped folding chair according to claim 2, characterized in that, The second folding assembly includes a fourth folding rod (410), a fifth folding rod (420), and a sixth folding rod (430). The upper end of the fourth folding rod (410) is hinged to the upper end of the third support rod (130), and the lower end of the fourth folding rod (410) is hinged to the lower end of the fifth support rod (210). The upper end of the fifth folding rod (420) is hinged to the upper end of the seventh support rod (230), and the lower end of the sixth folding rod (430) is hinged to the lower end of the first support rod (110). A second rotating piece (440) is hinged to the middle of the fourth folding rod (410). The lower end of the fifth folding rod (420) is connected to the upper end of the second rotating piece (440), and the upper end of the sixth folding rod (430) is connected to the second rotating piece (440).

4. The Σ-shaped folding chair according to claim 3, characterized in that, The left end of the first support rod (110) is provided with a first adapter (160). The left end of the fourth support rod (140) is hinged to the upper end of the first adapter (160). The lower end of the first adapter (160) is provided with a first positioning protrusion (161). The left end of the fourth support rod (140) is provided with a first positioning hole (141). The first positioning hole (141) corresponds one-to-one with the first positioning protrusion (161). The left end of the fifth support rod (210) is provided with a second adapter. The left end of the eighth support rod (240) is hinged to the upper end of the second adapter. The lower end of the second adapter is provided with a second positioning protrusion. The left end of the eighth support rod (240) is provided with a second positioning hole. The second positioning hole corresponds one-to-one with the second positioning protrusion.

5. The Σ-shaped folding chair according to claim 4, characterized in that, The lower end of the first support rod (110) is provided with a first reinforcing part, and the lower end of the second support rod (120) is provided with a second reinforcing part. The first reinforcing part and the second reinforcing part are spirally twisted.

6. The Σ-shaped folding chair according to claim 4, characterized in that, The front end of the second support rod (120) is provided with a first decorative plate, the rear end of the sixth support rod (220) is provided with a second decorative plate, the upper end of the first support rod (110) is provided with a third decorative plate, and the upper end of the fifth support rod (210) is provided with a fourth decorative plate.

7. The Σ-shaped folding chair according to claim 6, characterized in that, The right end of the fourth support rod (140) is provided with a first hanging piece (150), and the lower right end of the first hanging piece (150) is provided with a first hanging hole (151). The right end of the eighth support rod (240) is provided with a second hanging piece (250), and the lower right end of the second hanging piece (250) is provided with a second hanging hole (251).

8. The Σ-shaped folding chair according to claim 6, characterized in that, Both ends of the fourth support rod (140) and both ends of the eighth support rod (240) are provided with first pads (170).

9. The Σ-shaped folding chair according to claim 4, characterized in that, The Σ-shaped folding chair includes a first hinge piece and a second hinge piece (270). The first support rod (110) has a first limiting piece in the middle, and the first limiting piece has a first adjusting hole in the middle. The upper end of the first hinge piece is hinged to the middle of the third support rod (130), and one end of the first hinge piece is hinged to the first limiting piece through the first adjusting hole. The fifth support rod (210) has a second limiting piece (260) in the middle, and the second limiting piece (260) has a first adjusting hole in the middle. The upper end of the second hinge piece (270) is hinged to the middle of the seventh support rod (230), and one end of the second hinge piece (270) is hinged to the second limiting piece (260) through the second adjusting hole.

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