A folding chair
By employing a cross-bracing structure and reinforcing rods in the folding chair, the problem of insufficient support strength is solved, achieving higher support strength and convenient folding functionality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO LUHAI BOJIANG LEISURE PROD CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-03
AI Technical Summary
The existing folding chairs have insufficient support strength, resulting in them being unstable during use.
It adopts a structure in which the left front leg and left rear leg cross, and the right front leg and right rear leg cross, and the upper ends of the left rear leg and right rear leg are connected by a reinforcing rod to increase the strength of the support. At the same time, a pin and rail structure is used to facilitate folding and unfolding.
The support strength of the folding chair has been improved, and space has been saved by optimizing the folding structure, resulting in a more stable usage state and a convenient folding process.
Smart Images
Figure CN224440759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a folding chair. Background Technology
[0002] CN1618371A discloses a folding chair, comprising a first folding support frame and a second folding support frame. The first folding support frame includes a first front chair leg, a first rear chair leg, and a seat assembly. The upper end of the first front chair leg and the front side end of the seat assembly are rotatably connected. The first front chair leg and the first rear chair leg are rotatably connected in a cross configuration. The side of the seat assembly is slidably and rotatably connected to the first rear chair leg. The second folding support frame includes a second front chair leg, a second rear chair leg, and a seat assembly. The upper end of the second front chair leg and the front side end of the seat assembly are rotatably connected. The second front chair leg and the second rear chair leg are rotatably connected in a cross configuration. The side of the seat assembly is slidably and rotatably connected to the second rear chair leg. A drawback of this design is that this folding chair mechanism, relying solely on the chair legs for support, lacks sufficient support strength during use. Summary of the Invention
[0003] In order to overcome the above-mentioned shortcomings of existing folding chairs, this utility model provides a folding chair with better strength.
[0004] The technical solution of this utility model to solve its technical problem is: a folding chair, including a seat, a first support, and a second support, wherein the first support includes a left front leg and a right front leg, and the second support includes a left rear leg and a right rear leg;
[0005] In the folding chair's usage state: the left front leg and left rear leg are crossed, with the left rear leg located inside the left front leg; the right front leg and right rear leg are crossed, with the right rear leg located inside the right front leg; the lower parts of the left and right front legs are in front, and the lower parts of the left and right rear legs are in the back; the upper parts of the left and right front legs are in the back, and the upper parts of the left and right rear legs are in front; a backrest is provided on the upper parts of the left and right front legs.
[0006] The left front leg and the left rear leg are rotatably connected by a left pin. The left rear leg is provided with a left rail groove extending along the left rear leg, and the right end of the left pin is located in the left rail groove.
[0007] The right front leg and the right rear leg are rotatably connected by a right pin. The right rear leg is provided with a right rail groove extending along the right rear leg, and the left end of the right pin is located in the right rail groove.
[0008] The upper ends of the left hind leg and the right hind leg are connected by a reinforcing rod. The two ends of the reinforcing rod are respectively provided with a left support arm and a right support arm. The seat plate is installed on the left support arm and the right support arm.
[0009] The tail of the left support arm is rotatably connected to the left front leg via a left pivot, and the tail of the right support arm is rotatably connected to the right front leg via a right pivot.
[0010] The left support arm is provided with a left sliding groove extending along the left support arm, and the left end of the reinforcing rod is located in the left sliding groove; the right support arm is provided with a right sliding groove extending along the right support arm, and the right end of the reinforcing rod is located in the right sliding groove.
[0011] Furthermore, the lower parts of the left front leg and the right front leg are connected by a first lower reinforcing rod, and the lower parts of the left hind leg and the right hind leg are connected by a second lower reinforcing rod.
[0012] Furthermore, the left and right pins include a shaft body and a washer located in the middle of the shaft body. The tail of the shaft body is provided with an outwardly protruding tail shank. The washer is located between the left front leg and the left hind leg, and between the right front leg and the right hind leg. The tail shank is located on the inner side of the left hind leg and the right hind leg.
[0013] Furthermore, the upper part of the left hind leg has an inwardly folded left portion, and the upper part of the right hind leg has an inwardly folded right portion. The upper ends of the left and right folds are connected by the reinforcing rod.
[0014] Furthermore, the left support arm has a left groove, the right support arm has a right groove, and the back of the seat plate is provided with a left insert and a right insert, the left insert being inserted into the left groove and the right insert being inserted into the right groove.
[0015] The beneficial effects of this utility model are as follows: the upper ends of the left hind leg and the right hind leg are connected by a reinforcing rod, which strengthens the strength of the chair, and a new folding structure is designed based on this. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of the present invention in use.
[0017] Figure 2 This is a structural diagram of the present invention in its use state after the seat plate has been removed.
[0018] Figure 3 This is a schematic diagram of the mounting plate installation.
[0019] Figure 4 This is a structural schematic diagram of the present invention in a folded state.
[0020] Figure 5 This is a schematic diagram of the structure of this utility model in the folded state after the seat plate is removed.
[0021] Figure 6This is a schematic diagram showing the assembly of the left front leg and left hind leg, and the right front leg and right hind leg. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0023] Reference Figures 1-6 A folding chair includes a seat S, a first support, and a second support. The first support includes a left front leg 1 and a right front leg 2, and the second support includes a left rear leg 3 and a right rear leg 4.
[0024] The left front leg 1 and the left rear leg 3 are rotatably connected by a left pin 5. The left rear leg 3 is provided with a left rail groove 6 extending along the left rear leg 3, and the right end of the left pin 5 is located in the left rail groove 6.
[0025] The right front leg 2 and the right rear leg 4 are rotatably connected by a right pin 7. The right rear leg 4 is provided with a right rail groove 8 extending along the right rear leg 4, and the left end of the right pin 7 is located in the right rail groove 8.
[0026] The upper end of the left hind leg 3 and the upper end of the right hind leg 4 are connected by a reinforcing rod 9. The two ends of the reinforcing rod 9 are respectively provided with a left support arm 10 and a right support arm 11. The seat plate S is installed on the left support arm 10 and the right support arm 11.
[0027] The tail of the left support arm 10 is rotatably connected to the left front leg 1 via a left pivot 13, and the tail of the right support arm 11 is rotatably connected to the right front leg 4 via a right pivot 14.
[0028] The left support arm 10 is provided with a left sliding groove 14 extending along the left support arm 10, and the left end of the reinforcing rod 9 is located in the left sliding groove 14; the right support arm 11 is provided with a right sliding groove 15 extending along the right support arm 11, and the right end of the reinforcing rod 9 is located in the right sliding groove 15.
[0029] In the folding chair's usage state: the left front leg 1 and left rear leg 3 are crossed, with the left rear leg 3 located inside the left front leg 1; the right front leg 2 and right rear leg 4 are crossed, with the right rear leg 4 located inside the right front leg 2; the lower parts of the left front leg 1 and right front leg 2 are in front, and the lower parts of the left rear leg 3 and right rear leg 4 are in the back; the upper parts of the left front leg 1 and right front leg 2 are in the back, and the upper parts of the left rear leg 3 and right rear leg 4 are in front; a backrest 16 is provided on the upper parts of the left front leg 1 and right front leg 2.
[0030] When folding is required, the left support arm 10 flips upward around the left pivot 12, and the right support arm 11 flips upward around the right pivot 13, causing the seat plate S to also flip upward. During the upward flipping process, the two ends of the reinforcing rod 9 move backward along the left slide groove 14 and the right slide groove 15 respectively. At the same time, the left front leg 1 and the left rear leg 3, and the right front leg 2 and the right rear leg 4 rotate relative to each other. The left pin 5 slides downward along the left rail groove 6, and the right pin 7 slides downward along the right rail groove 8, until the left rear leg 2 overlaps with the left front leg 1, the right rear leg 4 overlaps with the right front leg 2, and the seat plate S stands upright, thus achieving the folded state of the chair.
[0031] In one embodiment, the lower parts of the left front leg 1 and the right front leg 2 are connected by a first lower reinforcing rod 17, and the lower parts of the left rear leg 3 and the right rear leg 4 are connected by a second lower reinforcing rod 18, so as to further enhance the strength of the chair.
[0032] In one embodiment, the left pin 5 and the right pin 6 include a shaft body 19 and a washer 20 located in the middle of the shaft body 19. The tail of the shaft body 19 is provided with an outwardly protruding tail shank 21. The washer 20 is located between the left front leg 1 and the left rear leg 3, and between the right front leg 2 and the right rear leg 4, to prevent friction between the left front leg and the left rear leg, and between the right front leg and the right rear leg, during rotation. The tail shank 21 is located on the inner side of the left rear leg 3 and the right rear leg 4, and serves as a guide during folding.
[0033] In one embodiment, the upper part of the left rear leg 3 has an inwardly folded left fold 22, and the upper part of the right rear leg 4 has an inwardly folded right fold 23. The upper ends of the left fold 22 and the right fold 23 are connected by the reinforcing rod 9. This inward folding structure of the upper part of the left rear leg 3 and the inward folding mechanism of the upper part of the right rear leg 4 can make the chair stronger and save space.
[0034] In one embodiment, the left support arm 10 has a left groove 24, the right support arm 11 has a right groove, and the back of the seat plate S is provided with a left insert strip 25 and a right insert strip. The left insert strip 25 is inserted into the left groove 24, and the right insert strip is inserted into the right groove. The installation between the seat plate S and the left support arm 10 and the right support arm 11 is simple.
[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0036] The embodiments of this utility model have been described above. However, this utility model is not limited to the above embodiments. 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 folding chair, comprising a seat, a first support, and a second support, wherein the first support includes a left front leg and a right front leg, and the second support includes a left rear leg and a right rear leg; In the folding chair's usage state: the left front leg and left rear leg are crossed, with the left rear leg located inside the left front leg; the right front leg and right rear leg are crossed, with the right rear leg located inside the right front leg; the lower parts of the left and right front legs are in front, and the lower parts of the left and right rear legs are in the back; the upper parts of the left and right front legs are in the back, and the upper parts of the left and right rear legs are in front; a backrest is provided on the upper parts of the left and right front legs. characterized in that The left front leg and the left rear leg are rotatably connected by a left pin. The left rear leg is provided with a left rail groove extending along the left rear leg, and the right end of the left pin is located in the left rail groove. The right front leg and the right rear leg are rotatably connected by a right pin. The right rear leg is provided with a right rail groove extending along the right rear leg, and the left end of the right pin is located in the right rail groove. The upper ends of the left hind leg and the right hind leg are connected by a reinforcing rod. The two ends of the reinforcing rod are respectively provided with a left support arm and a right support arm. The seat plate is installed on the left support arm and the right support arm. The tail of the left support arm is rotatably connected to the left front leg via a left pivot, and the tail of the right support arm is rotatably connected to the right front leg via a right pivot. The left support arm is provided with a left sliding groove extending along the left support arm, and the left end of the reinforcing rod is located in the left sliding groove; the right support arm is provided with a right sliding groove extending along the right support arm, and the right end of the reinforcing rod is located in the right sliding groove.
2. The folding chair of claim 1, wherein: The lower parts of the left foreleg and the right foreleg are connected by a first lower reinforcing rod, and the lower parts of the left hind leg and the right hind leg are connected by a second lower reinforcing rod.
3. The folding chair of claim 1, wherein: The left and right pins include a shaft body and a washer located in the middle of the shaft body. The tail of the shaft body is provided with an outwardly protruding tail shank. The washer is located between the left front leg and the left hind leg, and between the right front leg and the right hind leg. The tail shank is located on the inner side of the left hind leg and the right hind leg.
4. The folding chair of claim 1, wherein: The upper part of the left hind leg has an inwardly folded left portion, and the upper part of the right hind leg has an inwardly folded right portion. The upper ends of the left and right folds are connected by the reinforcing rod.
5. The folding chair of claim 1, wherein: The left support arm has a left groove, the right support arm has a right groove, and the back of the seat plate is provided with a left insert and a right insert, the left insert being inserted into the left groove and the right insert being inserted into the right groove.