Folding chair

Abstract

The utility model discloses a folding chair. The folding chair comprises a chair seat, the two first supporting legs are obliquely arranged upwards towards the rear side, and the two sides of the chair seat are hinged to the side faces of the first supporting legs respectively; the two second supporting legs are both obliquely arranged forwards and upwards, the side faces of the middle sections of the two second supporting legs are hinged to the first supporting legs respectively, and the upper ends of the second supporting legs are used for supporting the front side of the lower bottom face of the chair seat; two ends of the connecting rod are respectively hinged to the middle part of the lower bottom surface of the chair seat and the side surface of the upper end of the second supporting leg. When the folding chair is unfolded, the chair seat rotates to a horizontal state along the hinged position of the chair seat and the first supporting leg, in the process, under the action of the connecting rod between the chair seat and the second supporting leg, the upper end of the second supporting leg also rotates forwards until the upper end of the second supporting leg abuts against the bottom of the chair seat, and at the moment, the first supporting leg and the second supporting leg are arranged in a crossed mode; and the upper end of the second supporting leg and the hinged part of the first supporting leg and the chair seat jointly support the chair seat, so that the chair seat is reliably supported and folded, and the whole occupied area is small.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a folding chair. Background Technology

[0002] Folding chairs are lightweight, stackable seats that are easy to move and save space. They are commonly used in various training institutions, schools at all levels, public places, hospitals, restaurants, hotels, companies, and homes.

[0003] Existing folding chairs with good stability tend to be larger when folded, while those with smaller folding volume tend to be less stable when unfolded. Utility Model Content

[0004] This utility model provides a folding chair, which aims to solve at least one of the technical problems existing in the prior art.

[0005] The technical solution of this utility model relates to a folding chair, comprising:

[0006] Seat;

[0007] Both first legs are tilted backward and upward, and the two sides of the seat are respectively hinged to the side of one of the first legs;

[0008] Both second legs are tilted forward and upward, and the sides of the middle section of the two second legs are respectively hinged to the first leg. The upper end of the second leg is used to support the front side of the lower bottom surface of the chair seat.

[0009] The connecting rod is hinged at both ends to the middle of the bottom surface of the chair seat and the side of the upper end of the second leg, respectively.

[0010] According to some embodiments of the present invention, the upper end of the second leg is formed with a plate structure, and the lower bottom surface of the seat is provided with a slot for accommodating the plate structure.

[0011] According to some embodiments of the present invention, the slot is provided with a plurality of grid-like recessed hole structures, and the insert plate structure abuts against the recessed hole structures.

[0012] According to some embodiments of the present invention, a triangular reinforcing rib is provided between the side of the slot and the seat.

[0013] According to some embodiments of the present invention, the two ends of the connecting rod are respectively hinged to the slot and the insert plate.

[0014] According to some embodiments of the present invention, the bottom side of the chair seat is provided with a mounting hole and a slot, the mounting hole has an opening facing downwards, the pivot of the side of the first support leg is rotatably disposed in the mounting hole, and a locking block is provided in the slot, the locking block being used to block the opening.

[0015] According to some embodiments of the present invention, the spacing between the openings is smaller than the diameter of the mounting holes, and the rotating shaft is provided with two mounting planes, the spacing between the two mounting planes being matched with the spacing between the openings.

[0016] According to some embodiments of the present invention, the two first legs extend upwards toward the seat to form a backrest.

[0017] According to some embodiments of the present invention, an arc-shaped gap is formed between the chair back and the chair seat.

[0018] According to some embodiments of this utility model, a reinforcing rod structure is connected between the two first legs and the two second legs.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. When unfolding the folding chair, the seat rotates to a horizontal position along the hinge point between it and the first leg. During this process, under the action of the connecting rod between the seat and the second leg, the upper end of the second leg also rotates forward until its upper end abuts against the bottom of the seat. At this time, the first and second legs are arranged crosswise, and the upper end of the second leg and the hinge point between the first leg and the seat jointly provide support for the seat, so that the seat is reliably supported. At the same time, when folding, the seat rotates upward and disengages from the upper end of the second leg. During this process, the connecting rod drives the second leg to rotate, so that the second leg and the first leg come together. After folding, the overall footprint is small. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of a folding chair according to an embodiment of the present utility model;

[0022] Figure 2 This is an overall schematic diagram of a folding chair from another perspective of an embodiment of the present utility model;

[0023] Figure 3 This is a structural schematic diagram of the chair seat of this utility model embodiment from bottom to top;

[0024] Figure 4 This is an exploded view of a folding chair according to an embodiment of the present invention.

[0025] Icon labels:

[0026] Seat 100, slot 110, recessed structure 111, reinforcing rib 112, mounting hole 120, opening 121, slot 130;

[0027] First leg 200, backrest 210, arc-shaped gap 220, reinforcing rod structure 230, pivot 240, mounting surface 241;

[0028] The second support leg is 300, and the insert plate structure is 310.

[0029] Connecting rod 400;

[0030] Card block 500. Detailed Implementation

[0031] The following will describe several embodiments of the present invention, including embodiments corresponding to the accompanying drawings. It should be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be construed as limiting the scope of protection of the present invention.

[0032] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0033] It should be noted that, unless otherwise explicitly defined, when a feature is referred to as "fixed," "connected," "installed," or "set" on another feature, it can be "fixed," "connected," "installed," or "set" directly on the other feature, or it can be "fixed," "connected," "installed," or "set" on the other feature indirectly. The terms "fixed," "connected," "installed," and "set" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] It should be noted that the descriptions of orientations or positional relationships indicated by terms such as up, down, left, right, top, bottom, front, back, inside, and outside used in this utility model are based on the orientations or positional relationships indicated by the accompanying drawings or embodiments. They are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] It should be noted that the term "and / or" used in this utility model includes any combination of one or more related listed items, "several" means one or more, "multiple" means at least two, "greater than", "less than", "exceeding" are understood to exclude the number itself, and "above", "below", "within" are understood to include the number itself.

[0036] It should be noted that the use of "first" and "second" in this utility model is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0037] It should be noted that, unless otherwise expressly defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and not for limiting the scope of the invention.

[0038] Reference Figures 1 to 4 The present invention relates to a folding chair, comprising a seat 100; two first legs 200, both inclined upwards to the rear, with the sides of the seat 100 respectively hinged to the side of one of the first legs 200; two second legs 300, both inclined upwards to the front, with the side of the middle section of the two second legs 300 respectively hinged to the first legs 200, and the upper end of the second legs 300 used to support the front side of the lower bottom surface of the seat 100; and a connecting rod 400, with both ends hinged to the middle of the lower bottom surface of the seat 100 and the side of the upper end of the second legs 300 respectively.

[0039] The application of the above-mentioned folding chair has at least the following beneficial effects: When the folding chair is unfolded, the seat 100 rotates to a horizontal position along the hinge point with the first leg 200. During this process, under the action of the connecting rod 400 between the seat 100 and the second leg 300, the upper end of the second leg 300 also rotates forward until its upper end abuts against the bottom of the seat 100. At this time, the first leg 200 and the second leg 300 are arranged crosswise, and the upper end of the second leg 300 and the hinge point between the first leg 200 and the seat 100 jointly provide support for the seat 100, so that the seat 100 is reliably supported. At the same time, when folding, the seat 100 rotates upward and disengages from the upper surface of the second leg 300. During this process, the connecting rod 400 drives the second leg 300 to rotate, so that the second leg 300 and the first leg 200 come together. After folding, the overall footprint is small.

[0040] According to some embodiments of the present invention, the upper end of the second leg 300 is provided with a plate structure 310, and the lower bottom surface of the seat 100 is provided with a slot 110 for accommodating the plate structure 310. During installation, the plate structure 310 is inserted into the slot 110 to fix the upper end of the seat 100 and the second leg 300, thereby preventing wobbling between the seat 100 and the second leg 300 and improving the comfort of the folding chair.

[0041] According to some embodiments of the present invention, the slot 110 is provided with a plurality of grid-like recessed hole structures 111, and the insert plate structure 310 abuts against the recessed hole structure 111. The recessed hole structure 111 is used to increase the structural strength of the slot 110, while preventing the internal shrinkage of the slot 110 during demolding, and at the same time, it can play a certain role in anti-slip and support for the insert plate structure 310.

[0042] According to some embodiments of the present invention, a triangular reinforcing rib 112 is provided between the side of the slot 110 and the seat 100. The reinforcing rib 112 is used to increase the structural strength of the side of the slot 110 and prevent the connection between the slot 110 and the seat 100 from breaking.

[0043] According to some embodiments of the present invention, the two ends of the connecting rod 400 are respectively hinged to the slot 110 and the insert plate.

[0044] According to some embodiments of this utility model, the bottom side of the chair seat 100 is provided with a mounting hole 120 and a slot 130. The mounting hole 120 has an opening 121 facing downward. The rotating shaft 240 on the side of the first support leg 200 is rotatably disposed in the mounting hole 120. The slot 130 is provided with a locking block 500, which is used to block the opening 121. By providing the opening 121, the rotating shaft 240 on the first support 200 can be easily installed and removed from the chair seat 100. At the same time, the locking block 500 is used to block the opening 121, so as to restrict the rotating shaft 240 in the mounting hole 120. Disassembly and assembly do not require the use of tools to remove bolts, saving disassembly and assembly time.

[0045] According to some embodiments of this utility model, the spacing of the openings 121 is smaller than the diameter of the mounting holes 120. The rotating shaft 240 is provided with two mounting surfaces 241, and the spacing between the two mounting surfaces 241 matches the spacing of the openings 121. After the rotating shaft 240 is inserted into the mounting holes 120, the rotating shaft 240 is rotated until the two mounting surfaces 241 are not parallel to the openings 121. Then the rotating shaft 240 can automatically be locked in the mounting holes 120 and will not fall off, which facilitates the operation during the installation process.

[0046] According to some embodiments of the present invention, two first legs 200 extend upwards toward the seat 100 to form a backrest 210. By making the first legs 200 and the backrest 210 into an integral part, the aesthetics of the folding chair can be improved, the assembly of parts can be reduced, and the overall installation of the folding chair can be facilitated.

[0047] According to some embodiments of the present invention, an arc-shaped gap 220 is formed between the backrest 210 and the seat 100. The arc-shaped gap 220 allows the backrest 210 to have a certain elasticity, thereby improving the comfort of a person when leaning against the backrest 210.

[0048] According to some embodiments of the present invention, a reinforcing rod structure 230 is connected between the two first legs 200 and the two second legs 300.

[0049] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", and "extended embodiment" may be used to describe several embodiments of the present invention, and the specific features, structures, materials or characteristics of the several embodiments may be combined in accordance with the principles and spirit of the present invention.

[0050] Although some embodiments of the present invention have been shown and described in this specification, the present invention should not be limited to the above embodiments. As long as they achieve the technical effects of the present invention by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations of these embodiments within the spirit and principles of this disclosure, without departing from the principles and purpose of the present invention, should be included within the scope of protection of this disclosure and should be considered to fall within the protection scope of the present invention.

Claims

1. A folding chair, characterized in that, include: Seat; Both first legs are tilted backward and upward, and the two sides of the seat are respectively hinged to the side of one of the first legs; Both second legs are tilted forward and upward, and the sides of the middle section of the two second legs are respectively hinged to the first leg. The upper end of the second leg is used to support the front side of the lower bottom surface of the chair seat. The connecting rod is hinged at both ends to the middle of the bottom surface of the chair seat and the side of the upper end of the second leg, respectively.

2. A folding chair according to claim 1, characterized in that, The upper end of the second leg has a plate structure, and the lower bottom surface of the seat has a corresponding slot for accommodating the plate structure.

3. A folding chair according to claim 1, characterized in that, The slot has several grid-like recessed holes, and the insert plate abuts against the recessed holes.

4. A folding chair according to claim 3, characterized in that, A triangular reinforcing rib is provided between the side of the slot and the seat.

5. A folding chair according to claim 2, characterized in that, The two ends of the connecting rod are respectively hinged to the slot and the insert plate.

6. A folding chair according to claim 1, characterized in that, The bottom side of the chair seat is provided with mounting holes and slots. The mounting holes have downward openings. The pivot of the side of the first support leg is rotatably disposed in the mounting holes. The slots are provided with locking blocks, which are used to block the openings.

7. A folding chair according to claim 6, characterized in that, The spacing between the openings is smaller than the diameter of the mounting holes. The rotating shaft has two mounting planes, and the spacing between the two mounting planes matches the spacing between the openings.

8. A folding chair according to claim 1, characterized in that, The two first legs extend upwards from the seat to form a backrest.

9. A folding chair according to claim 8, characterized in that, An arc-shaped gap is formed between the chair back and the chair seat.

10. A folding chair according to claim 1, characterized in that, A reinforcing rod structure is connected between the two first legs and the two second legs.

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