Anti-tip dining chair

Abstract

This utility model provides an anti-tipping dining chair. The anti-tipping dining chair includes: a seat cushion; a backrest fixedly installed on the top of the seat cushion; and support legs fixedly installed at the four corners of the bottom of the seat cushion. Two sets of support legs near the backrest are fitted with annular sleeves, and the upper inner wall of the annular sleeves has an annular groove. In use, by pulling the round rod upwards, a rectangular plate moves a limiting rod away from the circular groove inside the annular block. Then, rotating the annular block moves the rectangular column to the rear end of the support leg on the backrest side. Releasing the round rod allows the spring force to return the limiting rod to the circular groove, causing the rectangular column to stop steadily at the rear end of the support leg. When not using the chair, the rectangular column is moved under the seat cushion in the same way, without occupying aisle space and thus not affecting normal walking.

Description

Technical Field

[0001] This utility model relates to the field of dining chair technology, and in particular to an anti-tipping dining chair. Background Technology

[0002] Dining chairs are chairs used to provide seating and support for diners during meals; they are a type of restaurant furniture.

[0003] Currently, some anti-tipping dining chairs have appeared on the market, but these chairs will occupy part of the aisle when not in use, thus hindering people from walking.

[0004] Therefore, it is necessary to provide anti-tipping dining chairs to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides an anti-tipping dining chair, which solves the problem that the anti-tipping structure of the dining chair affects people's walking.

[0006] To solve the above-mentioned technical problems, the anti-tipping dining chair provided by this utility model includes: a seat cushion, a backrest fixedly installed on the top of the seat cushion, and support legs fixedly installed at the four corners of the bottom of the seat cushion. Two sets of support legs near the backrest are fitted with annular sleeves. Annular grooves are formed on the upper inner wall of the annular sleeves. Several sets of limiting blocks are evenly slidably connected inside the annular grooves. Each set of limiting blocks has a threaded rod rotatably connected to the side away from the support legs. The threaded rods are threadedly connected to the side wall of the annular sleeves. The outer ends of the threaded rods are fixedly installed with... A circular block is rotatably connected to the side wall of the annular sleeve. A rectangular column is fixedly installed on the side wall of the annular block. A rectangular plate three is fixedly installed on the side wall of the support leg. A circular groove is opened on the rectangular plate three, the annular sleeve, and the annular block. A limit rod is inserted into the circular groove. A rectangular plate two is fixedly installed on the top of the limit rod. A circular rod is fixedly installed on the top of the rectangular plate two. Springs are fixedly installed between the bottom of the left and right ends of the rectangular plate two and the top of the annular sleeve. The bottom of the rectangular plate two is in close contact with the top of the rectangular plate three.

[0007] Preferably, rubber pads are installed at the bottom of the two sets of rectangular columns and at the bottom of the four sets of support legs, and rubber pads are installed on the side of the limiting block near the support leg.

[0008] Preferably, the top of the cushion has a rectangular opening, a rectangular plate is installed inside the rectangular opening, and a pivot is provided between the rectangular plate and the rectangular opening.

[0009] Preferably, a number of sets of rotating shafts are fixedly installed at the bottom of the seat cushion, and a limiting plate is rotatably connected to the side wall of the sets of rotating shafts, and the limiting plate is in contact with the rectangular plate.

[0010] Preferably, a number of protrusions are fixedly installed on the top of the rectangular plate.

[0011] Preferably, a reinforcing plate is installed at the corner of the rectangular column.

[0012] Compared with related technologies, the anti-tipping dining chair provided by this utility model has the following beneficial effects:

[0013] This utility model provides an anti-tipping dining chair. When in use, by pulling the round rod upward, the rectangular plate moves the limiting rod away from the circular groove inside the annular block. Then, the annular block is rotated to move the rectangular column to the rear end of the support leg on the backrest side. Then, the round rod is released, and the spring force moves the limiting rod back into the circular groove, so that the rectangular column stops steadily at the rear end of the support leg. When not in use, the rectangular column is moved under the seat cushion in the same way as above, without occupying the aisle area and thus not affecting normal walking. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the anti-tipping dining chair provided by this utility model;

[0015] Figure 2 for Figure 1 The diagram shows the internal structure of the annular sleeve.

[0016] Figure 3 for Figure 1 The diagram shows the structural diagram of the bottom structure of the seat cushion;

[0017] Figure 4 for Figure 1 The diagram shows the internal structure of the annular groove.

[0018] Figure 5 for Figure 2 The enlarged schematic diagram of part A shown below;

[0019] Figure 6 for Figure 4 The enlarged schematic diagram of part B is shown.

[0020] Numbering on the map:

[0021] 1. Seat cushion, 2. Backrest, 3. Support leg, 4. Threaded rod, 5. Round block, 6. Rectangular column, 7. Rubber pad, 8. Annular sleeve, 9. Annular block, 10. Protrusion, 11. Rectangular plate one, 12. Rectangular opening, 13. Reinforcing plate, 14. Limiting plate, 15. Rotating shaft, 16. Annular groove, 17. Rectangular plate two, 18. Limiting block, 19. Spring, 20. Circular groove, 21. Limiting rod, 22. Rectangular plate three, 23. Round rod. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 A schematic diagram of a preferred embodiment of the anti-tipping dining chair provided by this utility model; Figure 2 for Figure 1 The diagram shows the internal structure of the annular sleeve. Figure 3 for Figure 1 The diagram shows the structural diagram of the bottom structure of the seat cushion; Figure 4 for Figure 1 The diagram shows the internal structure of the annular groove. Figure 5 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 6 for Figure 4 The enlarged schematic diagram of section B is shown. The anti-tipping dining chair includes: a seat cushion 1, a backrest 2 fixedly installed on the top of the seat cushion 1, and support legs 3 fixedly installed at the four corners of the bottom of the seat cushion 1. Two sets of support legs 3 near the backrest 2 are fitted with annular sleeves 8. Annular grooves 16 are formed on the upper inner wall of the annular sleeves 8. Several sets of limiting blocks 18 are evenly slidably connected inside the annular grooves 16. The sidewalls of the limiting blocks 18 are in contact with the sidewalls of the support legs 3. A threaded rod 4 is rotatably connected to the side of each limiting block 18 away from the support legs 3. The threaded rods 4 are threadedly connected to the sidewalls of the annular sleeves 8. A round block 5 is fixedly installed at the outer end of each threaded rod 4. A ring block 9 is rotatably connected to the side wall of sleeve 8. A rectangular column 6 is fixedly installed on the side wall of the ring block 9. The rectangular column 6 is L-shaped. A rectangular plate 22 is fixedly installed on the side wall of the support leg 3. A circular groove 20 is opened on the rectangular plate 22, the ring sleeve 8 and the ring block 9. A limit rod 21 is inserted into the circular groove 20. A rectangular plate 17 is fixedly installed on the top of the limit rod 21. A round rod 23 is fixedly installed on the top of the rectangular plate 17. Springs 19 are fixedly installed between the bottom of the left and right ends of the rectangular plate 17 and the top of the ring sleeve 8. The bottom of the rectangular plate 17 is in contact with the top of the rectangular plate 22.

[0024] Rubber pads 7 are installed at the bottom of the two sets of rectangular columns 6 and the bottom of the four sets of support legs 3. Rubber pads 7 are also installed on the side of the limiting block 18 near the support leg 3. The rubber pads 7 are designed to increase friction.

[0025] The top of the cushion 1 has a rectangular opening 12, and a rectangular plate 11 is installed inside the rectangular opening 12. A pivot is provided between the rectangular plate 11 and the rectangular opening 12, and the pivot allows the rectangular plate 11 to rotate inside the rectangular opening 12.

[0026] The bottom of the cushion 1 is fixedly installed with several sets of rotating shafts 15. Limiting plates 14 are rotatably connected to the side walls of the several sets of rotating shafts 15. The limiting plates 14 are in close contact with the rectangular plate 11. After the limiting plates 14 are rotated away from the bottom of the rectangular plate 11 along the rotating shafts 15, the rectangular plate 11 can be flipped inside the rectangular opening 12.

[0027] Several sets of protrusions 10 are fixedly installed on the top of the rectangular plate 11, and the protrusions 10 serve a massage function.

[0028] A reinforcing plate 13 is installed at the corner of the rectangular column 6, which enhances the supporting effect of the rectangular column 6.

[0029] The working principle of the anti-tipping dining chair provided by this utility model is as follows: When the dining chair is in use, by pulling the round rod 23 upward, the rectangular plate 21 drives the limiting rod 21 to leave the circular groove 20 inside the annular block 9. Then, the annular block 9 is rotated so that the rectangular column 6 moves to the rear end of the support leg 3 on one side of the backrest 2. Then, the round rod 23 is released, and the spring 19 drives the limiting rod 21 back into the circular groove 20, so that the rectangular column 6 stops steadily at the rear end of the support leg 3. When the dining chair is not in use, the rectangular column 6 is moved to the bottom of the seat cushion 1 in the same way as above.

[0030] Compared with related technologies, the anti-tipping dining chair provided by this utility model has the following beneficial effects:

[0031] When the dining chair is in use, by pulling the round rod 23 upward, the rectangular plate 17 causes the limiting rod 21 to move away from the circular groove 20 inside the annular block 9. Then, the annular block 9 is rotated so that the rectangular column 6 moves to the rear end of the support leg 3 on one side of the backrest 2. Then, the round rod 23 is released, and the spring 19 causes the limiting rod 21 to return to the circular groove 20, so that the rectangular column 6 stops steadily at the rear end of the support leg 3. When the dining chair is not in use, the rectangular column 6 is moved under the seat cushion 1 in the same way as above, without occupying the aisle area, so as not to affect normal walking.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. Anti-tip dining chair, characterized in that, include: A seat cushion has a backrest fixedly installed at its top and support legs fixedly installed at its four corners at the bottom. Two sets of support legs near the backrest are fitted with annular sleeves. Annular grooves are formed on the inner wall of the upper end of the annular sleeves. Several sets of limiting blocks are evenly slidably connected inside the annular grooves. Each set of limiting blocks has a threaded rod rotatably connected to the side away from the support legs. The threaded rods are threadedly connected to the side wall of the annular sleeve. A round block is fixedly installed at the outer end of the threaded rod. An annular block is rotatably connected to the side wall of the annular sleeve. A rectangular column is fixedly installed on the side wall of the annular block. A rectangular plate three is fixedly installed on the side wall of the support legs. Circular grooves are formed on the rectangular plate three, the annular sleeve, and the annular block. Limiting rods are inserted into the circular grooves. A rectangular plate two is fixedly installed on the top of the limiting rod. A round rod is fixedly installed on the top of the rectangular plate two. Springs are fixedly installed between the bottom of the left and right ends of the rectangular plate two and the top of the annular sleeve. The bottom of the rectangular plate two is in contact with the top of the rectangular plate three.

2. The anti-tipping dining chair according to claim 1, characterized in that, Rubber pads are installed at the bottom of the two sets of rectangular columns and at the bottom of the four sets of support legs, and rubber pads are installed on the side of the limiting block near the support leg.

3. The anti-tipping dining chair according to claim 1, characterized in that, The top of the cushion has a rectangular opening, and a rectangular plate is installed inside the rectangular opening. A pivot is provided between the rectangular plate and the rectangular opening.

4. The anti-tipping dining chair according to claim 3, characterized in that, The bottom of the seat cushion is fixedly equipped with several sets of rotating shafts, and a limiting plate is rotatably connected to the side wall of the several sets of rotating shafts. The limiting plate is in close contact with the rectangular plate.

5. The anti-tipping dining chair according to claim 3, characterized in that, Several sets of protrusions are fixedly installed on the top of the rectangular plate.

6. The anti-tipping dining chair according to claim 1, characterized in that, A reinforcing plate is installed at the corner of the rectangular column.

Images