Support structure of chair

Abstract

The utility model discloses a support structure of a chair, which comprises a plurality of lifting support legs (1), a support seat (2) is arranged at the bottom of each lifting support leg (1), a seat plate (5) is arranged at the top of each lifting support leg (1), and a manual lifting mechanism (3) and a pedal component (4) are arranged between adjacent lifting support legs (1); the pedal assembly (4) comprises a reinforcing rod (41) connected between the adjacent lifting supporting legs (1), a pedal (42) is rotationally connected to the reinforcing rod (41), the two sides of the pedal (42) are movably connected with the seat plate (5) through multiple sections of hinge rods (43), a first magnetic block (44) is arranged at the outer end of the pedal (42), and a second magnetic block (45) attracted with the first magnetic block (44) is arranged at the bottom of the seat plate (5). The high chair has the advantages of being low in lifting cost and convenient for children to tread and climb.

Description

Technical Field

[0001] The utility model relates to a chair structure, in particular to a support structure of a chair. Background Art

[0002] Chairs are widely used as seating for people's work and life, and are widely recognized and loved by people. As people's quality of life improves and manufacturers control the manufacturing cost of chairs, the requirements for chairs are getting higher and higher. Not only do they require high comfort, but they also need to have multiple other functions to meet different usage needs.

[0003] Existing chairs generally use cylinders, hydraulic cylinders or electric methods to adjust the height of the chair, which is costly and expensive. In addition, although the height of the chair can be automatically increased by using cylinders or hydraulic cylinders, when the height of the chair needs to be lowered, it is necessary to apply pressure on the chair to lower the height of the chair. For chairs that are electrically raised, multiple buttons need to be operated. These operations are difficult and hard to control for young children. Therefore, when the height of the chair is high, it is difficult for young children to lower the high chair or climb onto the high chair. Even if some chairs are equipped with pedals, the pedals are designed to be high and are only used to adjust the sitting posture. They are not stable enough and are not conducive to young children stepping on and climbing. Utility Model Content

[0004] The purpose of the utility model is to provide a support structure of a chair. The utility model has the characteristics of low lifting cost and convenience for children to step on and climb the high chair.

[0005] The technical solution of the utility model is as follows: a support structure of a chair, comprising a plurality of lifting legs, a support seat being provided at the bottom of the lifting legs, a seat plate being provided at the top of the lifting legs, a manual lifting mechanism and a pedal assembly being provided between adjacent lifting legs; the pedal assembly comprising a reinforcing rod connected between adjacent lifting legs, a pedal being rotatably connected to the reinforcing rod, both sides of the pedal being movably connected to the seat plate via a plurality of hinged rods, a first magnetic block being provided at the outer end of the pedal, and a second magnetic block attracted to the first magnetic block being provided at the bottom of the seat plate.

[0006] In the aforementioned support structure of a chair, the lifting legs include fixed legs and movable legs, the upper ends of the movable legs are fixedly connected to the seat plate, and the lower ends of the movable legs are sleeved on the fixed legs and move up and down along the fixed legs.

[0007] In the aforementioned support structure of a chair, the manual lifting mechanism includes a movable rod connected to adjacent movable legs and a connecting rod connected to adjacent support seats, a fixed rod is provided on the connecting rod, the upper end of each fixed rod is rotatably connected to a transmission bevel gear, a movable screw is fixedly connected to the transmission bevel gear, the upper end of the movable screw is rotatably connected to the movable rod, and the lower end of the movable screw extends into the fixed rod and is threadedly connected to the fixed rod; a mounting frame is provided on one side of the fixed rod, a rotating shaft is rotatably connected to the mounting frame, an active bevel gear meshing with the transmission bevel gear is fixedly connected to the rotating shaft, and a rotating handle is provided at one end of the rotating shaft.

[0008] In the aforementioned support structure of a chair, a mounting cavity is provided inside the support seat, a universal wheel frame is provided inside the mounting cavity, an adjustment rod is provided on the top of the universal wheel frame and is connected to the support seat for up and down sliding movement, a compression spring is provided on the outer sleeve of the adjustment rod, one end of the compression spring is connected to the universal wheel frame, and the other end of the compression spring is connected to the inner wall of the mounting cavity, and a caster is provided at the bottom of the universal wheel frame which can movably extend out of the mounting cavity.

[0009] In the aforementioned support structure of a chair, a non-slip pad is provided at the bottom of the support seat.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model uses a manual lifting mechanism to extend and shorten the lifting legs to adjust the height of the seat, and the cost is low. A hidden pedal is arranged on the lifting legs, and the pedal is respectively connected to the lifting legs and the seat plate through a reinforcing rod and a multi-section hinged rod, and can be turned over and hidden, and the connection stability is high. When opened, the supporting force is strong, which is not only convenient for the user to adjust the sitting posture on the seat, but also convenient for young children to climb up or climb down the chair with a higher height. When the pedal is not in use, it is turned over and hidden under the seat plate, and is fixed by attracting the first magnetic block and the second magnetic block, so it is not easy to shake and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model from one angle.

[0013] Figure 2 It is a structural schematic diagram of the support seat in the utility model.

[0014] The marks in the attached drawings are: 1. lifting leg; 11. fixed leg; 12. movable leg; 2. support seat; 21. installation cavity; 22. universal wheel frame; 23. adjustment rod; 24. compression spring; 25. caster; 26. anti-slip pad; 3. manual lifting mechanism; 31. movable rod; 311. connecting rod; 32. fixed rod; 33. transmission bevel gear; 34. movable screw; 35. mounting frame; 36. rotating shaft; 37. driving bevel gear; 38. rotating handle; 4. pedal assembly; 41. reinforcement rod; 42. pedal; 43. hinged rod; 44. first magnetic block; 45. second magnetic block; 5. seat plate. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Example:

[0018] like Figure 1-Figure 2 As shown, a support structure of a chair includes a plurality of lifting legs 1, a support seat 2 is provided at the bottom of the lifting legs 1, a seat plate 5 is provided at the top of the lifting legs 1, a manual lifting mechanism 3 and a pedal assembly 4 are provided between adjacent lifting legs 1; the pedal assembly 4 includes a reinforcing rod 41 connected between adjacent lifting legs 1, a pedal 42 is rotatably connected to the reinforcing rod 41, both sides of the pedal 42 are movably connected to the seat plate 5 through a plurality of hinged rods 43, a first magnetic block 44 is provided at the outer end of the pedal 42, and a second magnetic block 45 attracted to the first magnetic block 44 is provided at the bottom of the seat plate 5.

[0019] The utility model drives the lifting leg 1 to extend and shorten through the manual lifting mechanism 3 to adjust the height of the seat, and the cost is low; a hidden pedal 42 is set on the lifting leg 1, and the pedal 42 is connected to the lifting leg 1 and the seat plate 5 respectively through the reinforcing rod 41 and the multi-section hinge rod 43, which can be turned over and hidden, and the connection stability is good. When opened, the supporting force is strong, which is not only convenient for the user to adjust the sitting posture on the seat, but also convenient for young children to step on and climb up or climb down the chair with a higher height; when the pedal 42 is not in use, it is turned over and hidden under the seat plate 5, and is fixed by the attraction of the first magnetic block 44 and the second magnetic block 45, which is not easy to shake and has high stability. The manual lifting mechanism 3 and the pedal assembly 4 are connected between adjacent lifting legs 1, which can also improve the stability and strength of the bracket and increase the load-bearing capacity.

[0020] The lifting legs 1 include a fixed leg 11 and a movable leg 12 . The upper end of the movable leg 12 is fixedly connected to the seat plate 5 , and the lower end of the movable leg 12 is sleeved on the fixed leg 11 and moves up and down along the fixed leg 11 .

[0021] The manual lifting mechanism 3 includes a movable rod 31 connected to the adjacent movable legs 12 and a connecting rod 311 connected to the adjacent support seat 2. A fixed rod 32 is provided on the connecting rod 311. The upper end of each fixed rod 32 is rotatably connected to a transmission bevel gear 33. A movable screw 34 is fixedly connected to the transmission bevel gear 33. The upper end of the movable screw 34 is rotatably connected to the movable rod 31, and the lower end of the movable screw 34 extends into the fixed rod 32 and is threadedly connected to the fixed rod 32. A mounting frame 35 is provided on one side of the fixed rod 32. A rotating shaft 36 is rotatably connected to the mounting frame 35. An active bevel gear 37 meshing with the transmission bevel gear 33 is fixedly connected to the rotating shaft 36. A rotating handle 38 is provided at one end of the rotating shaft 36. In this embodiment, the movable rod 31 is connected to the movable leg 12, two transmission bevel gears 33 are provided, and two active bevel gears 37 are provided. When the rotating shaft 36 is rotated by rotating the handle 38, the rotating shaft 36 drives the two active bevel gears 37 to rotate, and the active bevel gears 37 drive the corresponding transmission bevel gears 33 to rotate, and the transmission bevel gears 33 drive the movable screw 34 to rotate and move upward or downward in the fixed rod 32; when the movable screw 34 moves, the movable leg 12 is driven by the movable rod 31 to move upward or downward along the fixed leg 11 to adjust the height of the seat plate 5, which is simple and convenient to operate, has high stability and low cost.

[0022] The support seat 2 is provided with an installation cavity 21 inside, and a universal wheel frame 22 is provided in the installation cavity 21. An adjustment rod 23 is provided on the top of the universal wheel frame 22 and is slidably connected to the support seat 2. A compression spring 24 is sleeved on the outside of the adjustment rod 23. One end of the compression spring 24 is connected to the universal wheel frame 22, and the other end of the compression spring 24 is connected to the inner wall of the installation cavity 21. A caster 25 that movably extends out of the installation cavity 21 is provided at the bottom of the universal wheel frame 22.

[0023] When the chair is not in use, the caster 25 extends out of the mounting cavity 21 and contacts the ground under the action of the compression spring 24, and the support seat 2 does not contact the ground, making it convenient to move the chair; when the chair is under pressure, the caster 25 is squeezed upward, the compression spring 24 is compressed, the caster 25 is hidden in the mounting cavity 21, and the bottom of the support seat 2 is directly in contact with the ground, with good stability, ensuring that the chair will not move when a child steps on the pedal 42 to climb, thereby improving safety.

[0024] An anti-skid pad 26 is provided at the bottom of the support base 2 .

[0025] When the chair is subjected to force so that the support seat 2 contacts the ground, the anti-skid pad 26 plays an anti-skid role, thereby improving the stability of the chair during use.

[0026] The parts not described in detail in the present invention are prior art and thus will not be described in detail here.

Claims

1. A support structure for a chair, characterized in that: The invention comprises a plurality of lifting legs (1), a support seat (2) is provided at the bottom of the lifting legs (1), a seat plate (5) is provided at the top of the lifting legs (1), a manual lifting mechanism (3) and a pedal assembly (4) are provided between adjacent lifting legs (1); the pedal assembly (4) comprises a reinforcing rod (41) connected between adjacent lifting legs (1), a pedal (42) is rotatably connected to the reinforcing rod (41), both sides of the pedal (42) are movably connected to the seat plate (5) through a plurality of hinged rods (43), a first magnetic block (44) is provided at the outer end of the pedal (42), and a second magnetic block (45) attracted to the first magnetic block (44) is provided at the bottom of the seat plate (5).

2. The support structure of a chair according to claim 1, characterized in that: The lifting legs (1) comprise a fixed leg (11) and a movable leg (12); the upper end of the movable leg (12) is fixedly connected to the seat plate (5); the lower end of the movable leg (12) is sleeved on the fixed leg (11) and moves up and down along the fixed leg (11).

3. The support structure of a chair according to claim 1, characterized in that: The manual lifting mechanism (3) comprises a movable rod (31) connected to an adjacent movable leg (12) and a connecting rod (311) connected to an adjacent supporting seat (2); a fixed rod (32) is provided on the connecting rod (311); the upper end of each fixed rod (32) is rotatably connected to a transmission bevel gear (33); a movable screw rod (34) is fixedly connected to the transmission bevel gear (33); the upper end of the movable screw rod (34) is rotatably connected to the movable rod (31); the lower end of the movable screw rod (34) extends into the fixed rod (32) and is threadedly connected to the fixed rod (32); a mounting frame (35) is provided on one side of the fixed rod (32); a rotating shaft (36) is rotatably connected to the mounting frame (35); an active bevel gear (37) meshing with the transmission bevel gear (33) is fixedly connected to the rotating shaft (36); a rotating handle (38) is provided at one end of the rotating shaft (36).

4. The support structure of a chair according to claim 1, characterized in that: The support seat (2) is provided with a mounting cavity (21) inside, a universal wheel frame (22) is provided inside, an adjusting rod (23) is provided on the top of the universal wheel frame (22) and is slidably connected to the support seat (2) up and down, a compression spring (24) is provided on the outside of the adjusting rod (23), one end of the compression spring (24) is connected to the universal wheel frame (22), and the other end of the compression spring (24) is connected to the inner wall of the mounting cavity (21), and a caster (25) is provided at the bottom of the universal wheel frame (22) and is movably extended out of the mounting cavity (21).

5. The support structure of a chair according to claim 1, characterized in that: An anti-slip pad (26) is provided at the bottom of the support seat (2).

Images