Adjusting structure of dining chair

Abstract

The utility model discloses an adjusting structure of a dining chair, which comprises a supporting pipe, a pressure rod is mounted in the middle of the supporting pipe, and a seat cushion is rotatably mounted at the top of the pressure rod; the supporting legs are fixedly connected to the outer side of the supporting pipe at equal intervals, a supporting foot is fixedly connected to the bottom of one end of each supporting leg, a trundle is rotationally connected to one side of each supporting foot, and a limiting fixing part is arranged on one side of each supporting foot; the trundle has the beneficial effects that the trundle can be stably and reliably locked at a specified position when the trundle needs to be fixed through the arrangement of the limiting and fixing part, and the safety problem caused by accidental movement of the trundle is prevented; through flexible switching of the trundles and the supporting legs, the dining chair can be easily moved when needed and can be stably fixed when not needed, and the practicability and convenience of the dining chair are improved; the protective shell is attractive, can effectively shield and restrain the caster, and prevents the caster from rotating and swinging to generate noise when the caster is not needed.

Description

Technical Field

[0001] This utility model relates to the field of dining chair technology, specifically to an adjustable structure for a dining chair. Background Technology

[0002] Dining chairs are chairs used for dining in restaurants or kitchens. They are generally used in conjunction with dining tables. The legs of existing dining chairs are in direct contact with the ground for support. When they need to be moved, they need to slide on the ground. Moreover, the support method (sliding or non-sliding) cannot be switched or adjusted according to the usage scenario. In some situations where dining chairs need to be moved frequently, such as in restaurants, when it is necessary to move a dining chair from one position to another, due to the high friction between the chair legs and the ground, it takes a lot of effort to push or pull the dining chair. This is not only laborious but also time-consuming. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable structure for a dining chair to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustment structure for a dining chair, comprising:

[0005] A support tube, with a pneumatic rod installed in the middle of the support tube, and a seat pad rotatably installed on the top of the pneumatic rod;

[0006] The support leg is provided in multiple parts and is fixedly fixed to the outside of the support tube at equal intervals. The bottom of one end of the support leg is fixedly connected to the foot. A caster is rotatably connected to one side of the foot. A limit fixing part is provided on one side of the foot to fix the position of the caster and switch the foot or the caster to contact the ground.

[0007] Preferably, a lifting rod is installed in the middle of the pneumatic rod, a support seat is installed at the top of the lifting rod, and the seat cushion is fixed to the top of the support seat.

[0008] Preferably, both sides of one end of the support leg are fixedly connected to limit plates, and a protective shell is slidably connected to the outer side of the support leg. The protective shell has an n-shaped structure, and the inner wall of the protective shell has a groove that cooperates with the limit plates.

[0009] Preferably, the end of the limiting plate is fixedly connected to a limiting baffle for limiting the protective shell, and the side of the protective shell is provided with a limiting notch that cooperates with the limiting baffle.

[0010] Preferably, a rubber pad is fixed to the bottom of the support leg.

[0011] Preferably, the limiting and fixing part includes a support shaft, one end of the support leg is fixedly connected to the support shaft, one end of the support shaft is provided with two limiting grooves, the outer side of the support shaft is rotatably connected to a limiting ring, and the top of the caster is rotatably connected to the limiting ring.

[0012] Preferably, one end of the support shaft is rotatably connected to a threaded rod, the outer side of the threaded rod is threadedly connected to a drive plate, and two limiting rods corresponding to the limiting holes are fixedly connected to one side of the drive plate. The limiting groove is slidably connected to the limiting rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the setting of the limiting and fixing part ensures that the casters can be stably and reliably locked in the designated position when fixed, preventing safety problems caused by accidental movement of the casters; through the flexible switching between casters and support legs, the dining chair can be easily moved when needed and stably fixed when not needed, improving the practicality and convenience of the dining chair; the setting of the protective shell is not only aesthetically pleasing, but also effectively covers and restrains the casters, preventing the casters from rotating and swinging and generating noise when not needed; the rubber pads fixed to the bottom of the support legs enhance the stability of the dining chair, while providing a good anti-slip effect, reducing safety hazards caused by sliding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the caster support of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the protective shell of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the support leg of this utility model;

[0018] Figure 5 This is a schematic diagram of the limiting ring of this utility model.

[0019] In the diagram: 1. Support tube; 2. Gas spring; 3. Outrigger; 4. Seat cushion; 5. Support foot; 6. Rubber pad; 7. Protective shell; 8. Limiting plate; 9. Limiting notch; 10. Limiting baffle; 11. Support shaft; 12. Limiting ring; 13. Caster; 14. Limiting hole; 15. Limiting groove; 16. Drive plate; 17. Limiting rod; 18. Threaded rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model provides a technical solution: an adjustable structure for a dining chair, comprising: a support tube 1, a gas spring 2 fixedly inserted in the middle of the support tube 1, a seat cushion 4 rotatably mounted on the top of the gas spring 2, and a backrest fixedly connected to one side of the seat cushion 4; four legs 3 are provided and equidistantly fixed to the outside of the support tube 1, a foot 5 is fixedly connected to the bottom of one end of the leg 3, a caster 13 is rotatably connected to one side of the foot 5, and a limit fixing part is provided on one side of the foot 5 for fixing the position of the caster 13 and switching the foot 5 or the caster 13 to contact the ground.

[0022] It should be noted that in this embodiment, when the dining chair is not required to slide, the caster 13 is rotated above the support leg 5 and fixed by the limiting and fixing part, so that the dining chair can be stably placed in the placement position and prevented from moving during use. When the dining chair needs to slide, the caster 13 is rotated downwards, so that the caster 13 contacts the ground and the position of the caster 13 is locked by the limiting and fixing part. After locking, the dining chair can be slid and pushed under the action of the caster 13, making its movement more convenient.

[0023] A lifting rod is installed in the middle of the gas spring 2, and a support base is installed on the top of the lifting rod. The seat 4 is fixed to the top of the support base.

[0024] It should be noted that the structure of the lifting rod and the support base is not shown in the figure of this embodiment. The structure adopts the existing setting scheme. For the specific structure, please refer to the patent document of Chinese Utility Model Patent 202220455313.6 published before the application date. The extension length of the gas rod 2 can be adjusted by adjusting the adjustment handle of the support base, thereby adjusting the height of the seat 4. The lifting rod can rotate in the middle of the gas rod 2, thereby realizing the rotation of the seat 4, so that the seat 4 can face different angles.

[0025] Both sides of one end of the support leg 3 are fixedly connected to the limiting plate 8. The outer side of the support leg 3 is slidably connected to the protective shell 7, which has an n-shaped structure. The inner wall of the protective shell 7 is provided with a sliding groove that cooperates with the limiting plate 8. The end of the limiting plate 8 is fixedly connected to the limiting baffle 10 for limiting the protective shell 7. The side of the protective shell 7 is provided with a limiting notch 9 that cooperates with the limiting baffle 10.

[0026] It should be noted that, in this embodiment, after the caster 13 is rotated upward and locked, the protective shell 7 can slide along the limiting plate 8 to one end. In this way, the caster 13 that is flipped upward can be covered by the protective shell 7. The inner wall of the protective shell 7 can restrain and cover the caster 13, which is aesthetically pleasing and prevents noise caused by people rotating and swinging the caster 13.

[0027] A rubber pad 6 is fixed to the bottom of the support leg 5.

[0028] It should be noted that, in this embodiment, the rubber pads fixed to the bottom of the seat legs can enhance stability, prevent slipping, and reduce damage to the ground or floor.

[0029] The limiting and fixing part includes a support shaft 11. One end of the support leg 5 is fixedly connected to the support shaft 11. Two limiting grooves 15 are opened at one end of the support shaft 11. A limiting ring 12 is rotatably connected to the outer side of the support shaft 11. The top of the caster 13 is fixedly connected to the limiting ring 12. A threaded rod 18 is rotatably connected to one end of the support shaft 11. A drive plate 16 is threadedly connected to the outer side of the threaded rod 18. Two limiting inserts 17 corresponding to the limiting holes 14 are fixedly connected to one side of the drive plate 16. The limiting grooves 15 and the limiting inserts 17 are slidably connected.

[0030] It should be noted that in this embodiment, the outer side of the limiting ring 12 is fixedly connected to the connecting pipe, and the top of the caster 13 is rotatably installed inside the connecting pipe. When the position of the caster 13 needs to be adjusted, the limiting ring 12 is rotated around the support shaft 11. Because the limiting hole 14 is symmetrically arranged about the support shaft 11, when the limiting ring 12 drives the caster 13 vertically upward or downward, the limiting hole 14 corresponds to the limiting rod 17. By rotating the threaded rod 18, a spring washer is installed between the support shaft 11 and the drive plate 16 and on the outer side of the threaded rod 18. By rotating the threaded rod 18, with the cooperation of the thread and the limiting rod 17, the drive plate 16 drives the limiting rod 17 to insert into the limiting hole 14 of the limiting ring 12, thereby fixing the position of the caster 13. This allows for switching between moving or fixing the support leg 3.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0032] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable structure for a dining chair, characterized in that: include: A support tube (1) is provided, and a pneumatic rod (2) is installed in the middle of the support tube (1). A seat cushion (4) is rotatably installed on the top of the pneumatic rod (2). The support leg (3) is provided in multiple and is fixedly fixed to the outside of the support tube (1) at equal intervals. The bottom of one end of the support leg (3) is fixedly connected to the foot (5). A caster (13) is rotatably connected to one side of the foot (5). A limit fixing part is provided on one side of the foot (5) to fix the position of the caster (13) and switch the foot (5) or the caster (13) to contact the ground. The limiting and fixing part includes a support shaft (11), one end of the support leg (5) is fixedly connected to the support shaft (11), one end of the support shaft (11) is provided with two limiting grooves (15), the outer side of the support shaft (11) is rotatably connected to a limiting ring (12), and the top of the caster (13) is rotatably connected to the limiting ring (12). One end of the support shaft (11) is rotatably connected to a threaded rod (18), and the outer side of the threaded rod (18) is threadedly connected to a drive plate (16). Two limit rods (17) corresponding to the limit holes (14) are fixedly connected to one side of the drive plate (16), and the limit groove (15) is slidably connected to the limit rods (17).

2. The adjustable structure of a dining chair according to claim 1, characterized in that: A lifting rod is installed in the middle of the pneumatic rod (2), and a support seat is installed on the top of the lifting rod. The seat cushion (4) is fixed to the top of the support seat.

3. The adjustable structure of a dining chair according to claim 1, characterized in that: Limiting plates (8) are fixedly connected to both sides of one end of the support leg (3). A protective shell (7) is slidably connected to the outer side of the support leg (3). The protective shell (7) has an n-shaped structure. The inner wall of the protective shell (7) is provided with a sliding groove that cooperates with the limiting plate (8).

4. The adjustable structure for a dining chair according to claim 3, characterized in that: The end of the limiting plate (8) is fixedly connected to a limiting baffle (10) for limiting the protective shell (7), and the side of the protective shell (7) is provided with a limiting notch (9) that cooperates with the limiting baffle (10).

5. The adjustable structure of a dining chair according to claim 1, characterized in that: A rubber pad (6) is fixed to the bottom of the support leg (5).

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