Lifting device of human engineering chair

Abstract

The utility model relates to the field of human engineering chairs, and discloses a lifting device of a human engineering chair, which comprises a seat cushion, the seat cushion is movably arranged above a triangular base, a pneumatic lifting mechanism is fixed on the top surface of the triangular base, a connecting plate is fixed at the top end of the pneumatic lifting mechanism, and the connecting plate is connected with the triangular base. A plurality of first mounting bases are fixed to the bottom face of the connecting plate, second mounting bases are movably arranged in the multiple movable grooves correspondingly, and supporting rods are rotatably arranged between the multiple second mounting bases and the multiple first mounting bases correspondingly; the top ends of the multiple supporting rods are rotationally arranged in the multiple first mounting bases correspondingly, and the bottom ends of the multiple supporting rods are rotationally arranged in the multiple second mounting bases correspondingly. According to the pneumatic lifting mechanism, additional support is provided for the cushion, so that the stability and durability of the pneumatic lifting mechanism are improved, and meanwhile, the comfort and safety of a user are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ergonomic chairs, in particular to a lifting device for ergonomic chairs. Background Art

[0002] Chairs are an indispensable piece of furniture in people's daily office and life. Chairs are very practical and can be found in every room. Their main function is to facilitate people's rest, so their comfort is the main criterion for measuring the quality of a chair. At present, office workers generally spend their office time on chairs. Due to long-term sitting and incorrect sitting posture, office workers suffer from cervical spondylosis, lumbar disc herniation and other diseases to varying degrees. With the advancement of science and technology and the improvement of people's living standards, healthy living has gradually become the focus of people's attention. Healthy ergonomic office chairs can effectively reduce the probability of suffering from the above diseases. In the design of ergonomic chairs, the lifting device is one of the key components. It not only affects the user's comfort, but also the convenience and safety of use.

[0003] According to the Chinese patent with publication number: CN218635530U, a lifting device for lifting tables and chairs that conforms to ergonomics, the lifting device for lifting tables and chairs that conforms to ergonomics includes: a triangular base, a lifting mechanism arranged at the center of the triangular base and a placeable component arranged on the triangular base; the lifting mechanism includes a fixed central tube arranged at the center of the triangular base and a lifting gas spring assembly arranged on the fixed central tube, the lifting gas spring assembly includes a gas spring outer tube fixedly arranged in the fixed central tube and an inner tube arranged in the gas spring, the gas spring inner tube slides up and down in the gas spring outer tube; a connecting piece is arranged at the upper end of the gas spring inner tube to connect to the table top.

[0004] In the above scheme, the seat cushion is height-adjusted by means of a lifting gas spring assembly and is also supported thereon, which results in the following disadvantages: when the chair is in use, it is supported only by means of the lifting gas spring assembly, and the stability and durability of the lifting gas spring assembly are easily reduced in an environment where it is subjected to heavy pressure for a long time and is frequently adjusted. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting device for an ergonomic chair to solve the problem that when the chair is in use, it is supported only by a lifting gas spring assembly, and the stability and durability of the lifting gas spring assembly are easily reduced under the environment of long-term heavy pressure and frequent adjustment.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical scheme: a lifting device for an ergonomic chair, including a seat cushion, the seat cushion is movably arranged above a triangular base, the top surface of the triangular base is provided with a plurality of movable grooves, the bottom surface of the triangular base is fixed with a plurality of universal wheels, the top surface of the triangular base is fixed with a pneumatic lifting mechanism, the top end of the pneumatic lifting mechanism is fixed with a connecting plate, the bottom surface of the connecting plate is fixed with a plurality of first mounting seats, the interiors of the plurality of movable grooves are respectively movably provided with second mounting seats, and the plurality of second mounting seats and the plurality of first mounting seats are connected to each other. Support rods are rotatably arranged between the mounting seats, the top ends of several support rods are rotatably arranged in several first mounting seats, the bottom ends of several support rods are rotatably arranged in several second mounting seats, the left and right sides of the inner walls of several movable grooves are respectively provided with sliding grooves, the left and right sides of the outer walls of several second mounting seats are respectively fixed with sliders, the two sliders are respectively slidably arranged in two sliding grooves, the inner walls of several movable grooves are respectively fixed with first springs, and the inner ends of several first springs are respectively fixedly connected to the outer sides of several second mounting seats.

[0007] Preferably, movable seats are fixed to the bottom surfaces of several of the second mounting seats, rollers are rotatably provided inside several of the movable seats, and the bottom surfaces of several of the rollers are in contact with the inner bottom surfaces of several movable grooves.

[0008] Preferably, a placement plate is fixed to the outer wall of the triangular base.

[0009] Preferably, a plurality of second springs are fixed to the top surface of the connecting plate, and top ends of the plurality of second springs are respectively fixedly connected to the bottom surface of the seat cushion.

[0010] Preferably, a plurality of limit grooves are provided on the top surface of the connecting plate, and limit columns are slidably inserted into the interior of the plurality of limit grooves, and a plurality of the second springs are respectively wrapped around the plurality of limit columns, and the top ends of the plurality of limit columns are respectively fixedly connected to the bottom surface of the seat cushion.

[0011] Preferably, the thickness of the connecting plate is 4 cm.

[0012] Compared with the prior art, the lifting device of an ergonomic chair using the above technical solution has the following beneficial effects:

[0013] 1. It is helpful to provide additional support for the seat cushion during use, thereby improving the stability and durability of the pneumatic lifting mechanism, and at the same time improving the comfort and safety of the user;

[0014] Second, during use, the movable seat and rollers can reduce friction, so that the second mounting seat can be easily moved in the movable groove, thereby making the second mounting seat more flexible when moving. The placement board can provide users with additional storage space for other sundries, which helps to improve the versatility of the lifting device;

[0015] 3. During use, the second spring can absorb and reduce the impact force when sitting down, providing the user with a softer and more comfortable sitting feeling, while helping to reduce the wear and tear on the chair structure and extend the service life of the chair. The limit groove and limit column can help to limit the seat cushion and prevent the seat cushion from shifting, thereby improving the stability of the seat cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 It is an exploded schematic diagram of an embodiment.

[0018] Figure 3 It is a schematic diagram of the explosion of the connecting plate and the supporting rod in the embodiment.

[0019] Figure 4 For example Figure 2 Enlarged schematic diagram at point A in the middle.

[0020] In the figure: 1. seat cushion; 2. triangular base; 3. movable groove; 4. pneumatic lifting mechanism; 5. connecting plate; 6. first mounting seat; 7. second mounting seat; 8. support rod; 9. slide groove; 10. slider; 11. first spring; 12. moving seat; 13. roller; 14. placement plate; 15. second spring; 16. limit groove; 17. limit column. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 4As shown, a lifting device for an ergonomic chair includes a seat cushion 1, which is movably arranged above a triangular base 2, a plurality of movable grooves 3 are provided on the top surface of the triangular base 2, a plurality of universal wheels are fixed to the bottom surface of the triangular base 2, a pneumatic lifting mechanism 4 is fixed to the top surface of the triangular base 2, a connecting plate 5 is fixed to the top of the pneumatic lifting mechanism 4, a plurality of first mounting seats 6 are fixed to the bottom surface of the connecting plate 5, a plurality of second mounting seats 7 are movably arranged inside the plurality of movable grooves 3, and a plurality of second mounting seats 7 and a plurality of first mounting seats 6 are rotatably arranged between the plurality of second mounting seats 7 and the plurality of first mounting seats 6. Support rods 8, the top ends of several support rods 8 are rotatably arranged in several first mounting seats 6, the bottom ends of several support rods 8 are rotatably arranged in several second mounting seats 7, the left and right sides of the inner walls of several movable grooves 3 are respectively provided with sliding grooves 9, the left and right sides of the outer walls of several second mounting seats 7 are respectively fixed with sliders 10, the two sliders 10 are respectively slidably arranged in the two sliding grooves 9, the inner walls of several movable grooves 3 are respectively fixed with first springs 11, and the inner ends of several first springs 11 are respectively fixedly connected to the outer sides of several second mounting seats 7.

[0023] In use, the seat cushion 1 is at the lowest position. The pneumatic lifting mechanism 4 facilitates the user to adjust the seat cushion 1 upward, so that the bottoms of the plurality of support rods 8 and the plurality of second mounting seats 7 move inwards respectively. At this time, the second mounting seats 7 are limited by the slide grooves 9 and the sliders 10 to prevent the second mounting seats 7 from deflecting, which is conducive to increasing stability, and the first spring 11 is in a stretched state; conversely, when the user adjusts the seat cushion 1 downward, the bottoms of the plurality of support rods 8 and the plurality of second mounting seats 7 move outwards respectively, and the first spring 11 contracts. This is conducive to providing additional support for the seat cushion 1, thereby facilitating the improvement of the stability and durability of the pneumatic lifting mechanism 4, and at the same time, improving the comfort and safety of the user.

[0024] like Figure 1-Figure 4 As shown, movable seats 12 are fixed to the bottom surfaces of the plurality of second mounting seats 7 , rollers 13 are rotatably arranged inside the plurality of movable seats 12 , and the bottom surfaces of the plurality of rollers 13 are in contact with the inner bottom surfaces of the plurality of movable slots 3 .

[0025] During use, the movable seat 12 and the roller 13 are used to reduce friction, so that the second mounting seat 7 can be easily moved in the movable groove 3, thereby making the second mounting seat 7 more flexible when moving.

[0026] like Figure 1-Figure 4 As shown, a placement plate 14 is fixed to the outer wall of the triangular base 2, and a plurality of second springs 15 are fixed to the top surface of the connecting plate 5, and the top ends of the plurality of second springs 15 are fixedly connected to the bottom surface of the seat cushion 1 respectively.

[0027] In use, the placement plate 14 is helpful to provide additional storage space for the user, and other sundries can be placed, which is helpful to improve the versatility of the lifting device. The second spring 15 can absorb and reduce the impact force when sitting down, providing the user with a softer and more comfortable sitting feeling, while helping to reduce the wear and tear of the chair structure and extend the service life of the chair.

[0028] like Figure 1-Figure 4 As shown, a plurality of limiting grooves 16 are provided on the top surface of the connecting plate 5, and limiting columns 17 are slidably inserted inside the plurality of limiting grooves 16, and a plurality of second springs 15 are respectively wrapped around the plurality of limiting columns 17, and the top ends of the plurality of limiting columns 17 are respectively fixedly connected to the bottom surface of the seat cushion 1, and the thickness of the connecting plate 5 is 4 cm.

[0029] During use, the limiting grooves 16 and the limiting columns 17 are used to limit the seat cushion 1 and prevent the seat cushion 1 from shifting, thereby improving the stability of the seat cushion 1 .

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting device for an ergonomic chair, comprising a seat cushion (1), wherein the seat cushion (1) is movably arranged above a triangular base (2), and characterized in that: The top surface of the triangular base (2) is provided with a plurality of movable grooves (3), the bottom surface of the triangular base (2) is fixed with a plurality of universal wheels, the top surface of the triangular base (2) is fixed with a pneumatic lifting mechanism (4), the top of the pneumatic lifting mechanism (4) is fixed with a connecting plate (5), the bottom surface of the connecting plate (5) is fixed with a plurality of first mounting seats (6), a plurality of second mounting seats (7) are movably arranged inside the plurality of movable grooves (3), a plurality of support rods (8) are rotatably arranged between the plurality of second mounting seats (7) and the plurality of first mounting seats (6), and the tops of the plurality of support rods (8) are respectively The plurality of support rods (8) are rotatably arranged in a plurality of first mounting seats (6), the bottom ends of the plurality of support rods (8) are rotatably arranged in a plurality of second mounting seats (7), the inner walls of the plurality of movable grooves (3) are provided with sliding grooves (9) on the left and right sides, the outer walls of the plurality of second mounting seats (7) are provided with sliders (10) on the left and right sides, the two sliders (10) are slidably arranged in the two sliding grooves (9), the inner walls of the plurality of movable grooves (3) are provided with first springs (11), and the inner ends of the plurality of first springs (11) are fixedly connected to the outer sides of the plurality of second mounting seats (7).

2. The lifting device for an ergonomic chair according to claim 1, characterized in that: A movable seat (12) is fixed to the bottom surface of a plurality of the second mounting seats (7), and a roller (13) is rotatably arranged inside a plurality of the movable seats (12), and the bottom surfaces of the plurality of the rollers (13) are in contact with the inner bottom surfaces of a plurality of the movable grooves (3).

3. The lifting device for an ergonomic chair according to claim 2, characterized in that: A placement plate (14) is fixed to the outer wall of the triangular base (2).

4. The lifting device for an ergonomic chair according to claim 3, characterized in that: A plurality of second springs (15) are fixed to the top surface of the connecting plate (5), and the top ends of the plurality of second springs (15) are respectively fixedly connected to the bottom surface of the seat cushion (1).

5. The lifting device for an ergonomic chair according to claim 4, characterized in that: The top surface of the connecting plate (5) is provided with a plurality of limiting grooves (16), and limiting columns (17) are slidably inserted into the interior of the plurality of limiting grooves (16), and a plurality of the second springs (15) are respectively surrounded by the plurality of limiting columns (17), and the top ends of the plurality of limiting columns (17) are respectively fixedly connected to the bottom surface of the seat cushion (1).

6. The lifting device for an ergonomic chair according to claim 1, characterized in that: The thickness of the connecting plate (5) is 4 cm.

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