High load stable lift office chair

Abstract

The utility model provides high load stable lifting office chair. High load stable lifting office chair includes: mobile chassis, lifting assembly, lifting assembly installs at the top of mobile chassis, both sides of lifting assembly all install a plurality of connecting rods, another end of each group connecting rod all is fixedly connected with the connecting frame, one side of two connecting frames adjacent all is equipped with first rotation structure through mounting hole, one end of two first rotation structure adjacent all is fixedly connected with a driven part, one end of two driven parts adjacent all is fixedly connected with support frame. High load stable lifting office chair provided by the utility model, through the design adopts the suspension integrated seat cooperation support part, can promote the bearing weight also can the maximum degree angle adjustment before and after, lets staff can half lying use also can normal sitting posture use, and cooperation gravity center moves forward's connecting frame, makes the gravity center of integrated seat in the middle, improves the stability.

Description

Technical Field

[0001] This utility model relates to the field of height-adjustable office chair technology, and in particular to a high-load-stability height-adjustable office chair. Background Technology

[0002] Office chairs are specialized seating for office settings, primarily used by people when working at a desk. They consist of a seat, backrest, frame, casters, and adjustment mechanisms. Most can be adjusted for height and tilt, and some have armrests. They emphasize posture support and comfort during extended sitting, are structurally stable, and move easily to fit various indoor office environments. Widely used in offices, studies, meeting rooms, and other similar spaces, they are essential basic furniture for daily office work.

[0003] Office chairs typically consist of a seat, backrest, armrests, height adjustment gas spring, chassis, and casters. During reclining adjustment, the seat generally remains stationary, while the backrest angle is adjusted to achieve a reclining position. Backrest adjustment is mostly achieved through mechanical knobs, which can be loosened and then moved back and forth to adjust the tilt angle. Some models also have a position lock.

[0004] Most existing height-adjustable office chairs have separate seat and backrest structures. When the angle needs to be adjusted, only the backrest is adjusted while the seat remains stationary. This design affects the load-bearing capacity and stability when reclining. For heavier users, the office chair is prone to tipping over when reclining.

[0005] Therefore, it is necessary to provide high-load-stability height-adjustable office chairs to solve the above-mentioned technical problems. Summary of the Invention

[0006] This utility model provides a high-load-bearing and stable height-adjustable office chair, which solves the problem that adjusting the angle of the backrest separately while the seat is still and the backrest is reclined can affect the load-bearing capacity and stability of the office chair, and can easily cause the office chair to tip over when used by heavier people.

[0007] To solve the above-mentioned technical problems, the high-load stable height-adjustable office chair provided by this utility model includes: a mobile chassis; A lifting assembly is mounted on the top of a mobile chassis. Multiple connecting rods are mounted on both sides of the lifting assembly. A connecting frame is fixedly connected to the other end of each set of connecting rods. A first rotating structure is mounted on the adjacent side of two connecting frames through mounting holes. A driven component is fixedly connected to the adjacent end of each of the two first rotating structures. A support frame is fixedly connected to the adjacent end of each of the two driven components. Support components are mounted on the bottom of the inner wall of each support frame through multiple fixed plates. A docking frame is fixedly connected to the top of each set of support components. An integrated seat is fixedly connected between each of the two docking frames. Two second rotating structures are mounted on one side of the connecting frame through mounting holes. A driving component is fixedly connected to the adjacent end of each of the two second rotating structures. A triangular rotating head is slidably connected to the opposite end of each of the two second rotating structures. A latch is fixedly connected to the adjacent side of each of the two triangular rotating heads. A rotating component is mounted on the top of each of the two connecting frames through an adjusting component. A handrail is mounted on the top of each rotating component. Multiple connecting rods on the same side of the lifting assembly form a group. Both the first and second rotating structures are rotatably connected through mounting holes and connecting frames. Both the first and second rotating structures consist of bearings and shafts. A ring of holes is provided on one side of the connecting frame at the location where the second rotating structure is mounted, allowing the latch on one side of the triangular rotating head to engage and restrict the rotation of the second rotating structure. Teeth are provided on the outer surface of the driven component near the lower half. The driving component and the driven component are connected at the position of the teeth. The support frame is L-shaped, and the fixed plate is mounted on the L-shaped crossbar. (See reference for details.) Figure 4 The supporting component is a supporting spring with a damper. The supporting components on the same support frame are a group. The triangular rotating head is slidably connected to one end of the second rotating structure shaft through a hexagonal rod. The hexagonal rod has a limiting block in front to prevent the triangular rotating head from completely separating from the second rotating structure.

[0008] The mobile chassis includes a fixed block, multiple bent rods and multiple moving wheels. One end of each of the multiple bent rods is connected to the outer surface of the fixed block, and the other end of each of the multiple bent rods is used to mount the moving wheels. Both the bending rod and the fixing block are made of stainless steel.

[0009] Preferably, the lifting assembly includes a telescopic component, a docking structure, an adjusting structure, and a supporting structure. The telescopic component is installed on the top of the fixed block, the docking structure is used to install the supporting structure on the top of the telescopic component, and the adjusting structure is installed inside the supporting structure. The handle of the adjustment structure is exposed in the support structure. The adjustment structure can adjust the height of the telescopic component. The telescopic component is a cylinder used in existing office chairs.

[0010] Preferably, a fixed frame is installed on the top of the lifting assembly, and a placement frame is slidably connected to the front of the fixed frame; The fixed frame is located between the integrated seat and the support structure, but it does not affect the adjustment angle of the integrated seat.

[0011] Preferably, the integrated seat includes a seat, side panels, lumbar support, headrest, and backrest. The backrest is located at the top of the seat at the back, the lumbar support is installed on the front of the backrest near the bottom, the headrest is installed at the top of the backrest, and the side panels are located on both sides of the seat and the backrest. Both the seat and backrest are made of a frame covered with sponge and mesh fabric. The seat and backrest are one piece, and the bottom of the seat is curved.

[0012] Preferably, the top of each of the two adjusting components is rotatably connected to a support plate via a rotating component, and the top of each support plate is rotatably connected to two folding plates via a rotating buckle; The two folding panels fit together to the same size as the tray, and the rotating buckle is an existing hinge.

[0013] Preferably, the outer surfaces of the tray and the folding plate are covered with soft material, and rotating buckle mounting openings are provided on both sides of the tray and the folding plate.

[0014] Preferably, a magnetic attraction structure is installed on one of the adjacent sides of the two folded plates, and the magnetic attraction structure consists of two magnets that can attract each other; The magnetic structure allows the two folded panels to be held together, increasing stability. The magnetic structure consists of two magnetic blocks, which are installed on the adjacent sides of the two folded panels respectively.

[0015] Compared with related technologies, the high-load stable height-adjustable office chair provided by this utility model has the following beneficial effects: This utility model provides a high-load-bearing and stable height-adjustable office chair. To improve the load-bearing capacity and stability of the height-adjustable office chair when reclining, two sets of connecting rods are used in conjunction with a connecting frame to form an L-shaped support. The connecting frame is slightly moved forward to balance the center of gravity. Then, two support frames are installed between the two connecting frames through a driven component with a first rotating structure. At the same time, a drive component is installed on the connecting frame through a second rotating structure, allowing the drive component and the driven component to mesh and connect. Rotating the drive component can adjust the angle of the support frame. After that, only the docking frames on both sides of the integrated chair and the support components on the support frame need to be fixed to form a suspended office chair with an adjustable angle. This design, using a suspended integrated chair with support components, can increase the load-bearing capacity and allow for maximum front-to-back angle adjustment, allowing staff to use it in a semi-reclining or normal sitting posture. In addition, the connection frame with the center of gravity moved forward keeps the center of gravity of the integrated chair in the center, improving stability. Attached Figure Description

[0016] Figure 1 A schematic diagram of the first embodiment of the high-load stable height-adjustable office chair provided by this utility model; Figure 2 A structural schematic diagram of the support frame is provided for this utility model; Figure 3 A structural schematic diagram of the telescopic component is provided for this utility model; Figure 4 Provided for this utility model Figure 2An enlarged view of point A shown; Figure 5 A structural schematic diagram of the second embodiment of the high-load stable height-adjustable office chair provided by this utility model; Figure 6 A structural schematic diagram of the folding plate is provided for this utility model; Figure 7 Provided for this utility model Figure 6 A magnified view of point B shown.

[0017] The diagram is labeled as follows: 1. Mobile chassis, 101. Fixed block, 102. Bent rod, 103. Moving wheel; 2. Lifting assembly; 201. Telescopic component; 202. Docking structure; 203. Adjustment structure; 204. Support structure; 3. Connecting rod; 4. Connecting frame; 5. Adjusting component; 6. Rotating component; 7. Handrail; 8. One-piece seat, 801. Seat, 802. Side rails, 803. Lumbar support, 804. Headrest, 805. Backrest; 9. Fixed frame, 10. Mounting hole, 11. Placement frame, 12. Support frame, 13. Connecting frame, 14. First rotating structure, 15. Driven component, 16. Support component, 17. Fixed plate, 18. Drive component, 19. Second rotating structure, 20. Triangular rotating head, 21. Folding plate, 22. Support plate, 23. Rotating buckle, 24. Magnetic structure, 25. Locking bolt. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] First Embodiment Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the first embodiment of the high-load stable height-adjustable office chair provided by this utility model; Figure 2 A structural schematic diagram of the support frame is provided for this utility model; Figure 3 A structural schematic diagram of the telescopic component is provided for this utility model; Figure 4 Provided for this utility model Figure 2 An enlarged view of point A is shown. The high-load stable height-adjustable office chair includes: a movable chassis 1; The lifting assembly 2 is installed on the top of the mobile chassis 1. Multiple connecting rods 3 are installed on both sides of the lifting assembly 2. A connecting frame 4 is fixedly connected to the other end of each set of connecting rods 3. A first rotating structure 14 is installed on the adjacent side of two connecting frames 4 through mounting holes 10. A driven component 15 is fixedly connected to the adjacent end of two first rotating structures 14. A support frame 12 is fixedly connected to the adjacent end of two driven components 15. A support component 16 is installed on the bottom of the inner wall of the support frame 12 through multiple fixed plates 17. A docking frame 13 is fixedly connected to the top of two sets of support components 16. An integrated seat 8 is fixedly connected between two docking frames 13. Two second rotating structures 19 are mounted on one side of the connecting frame 4 through mounting holes 10. A driving component 18 is fixedly connected to the adjacent end of each of the two second rotating structures 19. A triangular rotating head 20 is slidably connected to the opposite end of each of the two second rotating structures 19. A latch 25 is fixedly connected to the adjacent side of each of the two triangular rotating heads 20. A rotating component 6 is mounted on the top of each of the two connecting frames 4 through an adjusting component 5. A handrail 7 is mounted on the top of each of the rotating components 6. Multiple connecting rods 3 on the same side of the lifting assembly 2 form a group. The first rotating structure 14 and the second rotating structure 19 both pass through the mounting hole 10 and are rotatably connected to the connecting frame 4. Both the first rotating structure 14 and the second rotating structure 19 are composed of bearings and shafts. A ring of holes is provided on one side of the connecting frame 4 at the location where the second rotating structure 19 is installed, allowing the latch 25 on one side of the triangular rotating head 20 to engage and restrict the rotation of the second rotating structure 19. Teeth are provided on the outer surface of the driven component 15 near the lower half. The driving component 18 and the driven component 15 are meshed at the location of the teeth. The support frame 12 is L-shaped, and the fixed plate 17 is mounted on the L-shaped crossbar. (See reference for details.) Figure 4 The support component 16 is a support spring with a damper. Support components 16 on the same support frame 12 are a group. The triangular rotating head 20 is slidably connected to one end of the shaft of the second rotating structure 19 through a hexagonal rod. The hexagonal rod has a limiting block in front to prevent the triangular rotating head 20 from completely separating from the second rotating structure 19. One end of the central shaft of the second rotating structure 19 has a hexagonal hole, and a groove is provided in the hole to allow the limiting block to slide. The adjusting component 5 and the rotating component 6 are both docking structures on existing office chairs, which can realize the up and down movement and rotation of the armrest 7.

[0020] Please refer to Figure 1 and Figure 3 The mobile chassis 1 includes a fixed block 101, a plurality of bent rods 102 and a plurality of moving wheels 103. One end of the plurality of bent rods 102 is connected to the outer surface of the fixed block 101, and the other end of the plurality of bent rods 102 is used to install the moving wheels 103. Both the bent rod 102 and the fixed block 101 are made of stainless steel, and the moving wheel 103 is a silent wheel.

[0021] Please refer to Figure 1 and Figure 3 The lifting assembly 2 includes a telescopic component 201, a docking structure 202, an adjusting structure 203, and a supporting structure 204. The telescopic component 201 is installed on the top of the fixed block 101. The docking structure 202 is used to install the supporting structure 204 on the top of the telescopic component 201. The adjusting structure 203 is installed inside the supporting structure 204. The handle of the adjustment structure 203 protrudes from the support structure 204. The adjustment structure 203 can adjust the height of the extension of the telescopic component 201. The telescopic component 201 is a cylinder used in existing office chairs, but a high-pressure nitrogen cylinder with a large diameter of 50-60mm and a wall thickness of ≥5mm is selected.

[0022] Please refer to Figure 1 and Figure 2 The top of the lifting component 2 is equipped with a fixed frame 9, and the front of the fixed frame 9 is slidably connected to a placement frame 11; The fixing frame 9 is located between the integrated seat 8 and the support structure 204, but it does not affect the adjustment angle of the integrated seat 8. The placement frame 11 is pulled out from the front of the fixing frame 9 to increase storage space.

[0023] Please refer to Figure 1 and Figure 2 The integrated seat 8 includes a seat 801, side panels 802, lumbar support 803, headrest 804, and backrest 805. The backrest 805 is located at the top of the seat 801 at the back. The lumbar support 803 is installed on the front of the backrest 805 near the bottom. The headrest 804 is installed at the top of the backrest 805. The side panels 802 are located on both sides of the seat 801 and the backrest 805. Both the seat 801 and the backrest 805 are made of a frame wrapped with sponge and mesh fabric. The seat 801 and the backrest 805 are one piece. The bottom of the seat 801 is curved. The connection between the two sides of the seat 801 and the connecting frame 13 is reinforced.

[0024] The working principle of the high-load stable height-adjustable office chair provided by this utility model is as follows: In actual use, the user sits on the integrated seat 8 in a normal sitting posture. If a reclining position is required, simply pull the triangular rotating head 20 to separate it from one side of the connecting frame 4. Then, the triangular rotating head 20 drives the drive component 18 to rotate, which in turn drives the driven component 15 to rotate, allowing the integrated seat 8 to adjust to a maximum angle of 45 degrees backward. After adjustment, simply press the triangular rotating head 20 to engage the latch 25 on one side of the triangular rotating head 20 into the hole on one side of the connecting frame 4, thus preventing the drive component 18 from rotating. After adjustment, the user can rest in a semi-reclining position. If a reset is required, simply rotate the integrated seat 8 in the opposite direction to reset it and return it to a normal sitting posture. During this process, the integrated seat 8 provides good support for heavier individuals, and with the forward-moving connecting frame 4, the center of gravity of the integrated seat 8 remains in the middle when it is semi-reclining.

[0025] Compared with related technologies, the high-load stable height-adjustable office chair provided by this utility model has the following beneficial effects: To improve the load-bearing capacity and stability of the height-adjustable office chair when reclining, two sets of connecting rods 3 are used in conjunction with connecting frames 4 to form an L-shaped support. The connecting frames 4 are slightly moved forward to balance the center of gravity. Then, two support frames 12 are installed between the two connecting frames 4 through driven parts 15 with a first rotating structure 14. At the same time, the drive part 18 is installed on the connecting frames 4 through a second rotating structure 19, so that the drive part 18 and the driven part 15 are engaged. Rotating the drive part 18 can drive the support frame 12 to adjust the angle. After that, only the docking frames 13 on both sides of the integrated seat 8 and the support parts 16 on the support frames 12 need to be fixed to form a suspended office chair that can rotate and adjust the angle of the integrated seat 8. Through this design, the suspended integrated seat 8 and the support parts 16 can increase the load-bearing capacity and adjust the angle up to 45 degrees forward and backward, allowing the staff to use it in a semi-reclining or normal sitting position. In addition, with the connection frame 4 with the center of gravity moved forward, the center of gravity of the integrated seat 8 is centered, improving stability.

[0026] Second Embodiment Please refer to the following: Figures 5-6 - Figure 7 , Figure 5 A structural schematic diagram of the second embodiment of the high-load stable height-adjustable office chair provided by this utility model; Figure 6 A structural schematic diagram of the folding plate is provided for this utility model; Figure 7 Provided for this utility model Figure 6The enlarged view at point B shows a high-load-bearing, stable, height-adjustable office chair based on the first embodiment of this application. The second embodiment of this application proposes another high-load-bearing, stable, height-adjustable office chair. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0027] Specifically, the difference between the high-load stable height-adjustable office chair provided in the second embodiment of this application and the following is provided in reference to... Figure 5 , Figure 6 and Figure 7 The tops of the two adjustment components 5 are rotatably connected to a support plate 22 via a rotating component 6, and the tops of the support plates 22 are rotatably connected to two folding plates 21 via a rotating buckle 23. The two folding panels fit together and are the same size as the support plate 22. The rotating buckle 23 is an existing hinge that allows the folding panel 21 to be unfolded 180 degrees.

[0028] Please refer to Figure 6 and Figure 7 The outer surfaces of the tray 22 and the folding plate 21 are covered with soft material, and the two sides of the tray 22 and the folding plate 21 are provided with rotating buckle 23 mounting holes.

[0029] Please refer to Figure 6 and Figure 7 Each of the two folded plates 21 has a magnetic attraction structure 24 installed on one of its adjacent sides. The magnetic attraction structure 24 consists of two magnets that can attract each other. The magnetic structure 24 can hold the two folded plates 21 together, increasing stability. The magnetic structure 24 consists of two magnetic blocks that are installed on the adjacent side of the two folded plates 21 respectively. A hole is provided on the adjacent side of the folded plates 21 where the magnetic structure 24 is installed.

[0030] Compared with related technologies, the high-load stable height-adjustable office chair provided by this utility model has the following beneficial effects: To facilitate the rapid expansion of the support area of ​​the armrest 7 as needed, two padded folding panels 21 are mounted on top of a padded support plate 22 via rotating buckles 23. When adjacent sides of the two folding panels 21 are pressed together, they attract each other using a magnetic structure 24 to increase stability. When the area of ​​the armrest 7 needs to be increased, simply pull the folding panel 21 to separate the magnetic structure 24, and the folding panel 21 can be unfolded around the rotating buckle 23. After being fully unfolded, one side of the folding panel 21 is pressed against one side of the support plate 22. The rotating buckle 23 ensures stability. After use, simply fold the folding panel 21 back up. This design, using unfoldable folding panels 21 in conjunction with the support plate 22, allows for rapid expansion of the support area of ​​the armrest 7 as needed, making it convenient for people with thicker arms to use.

[0031] 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. A high-load-bearing, stable, height-adjustable office chair, characterized in that: include: Mobile chassis; A lifting assembly is mounted on the top of a mobile chassis. Multiple connecting rods are mounted on both sides of the lifting assembly. A connecting frame is fixedly connected to the other end of each set of connecting rods. A first rotating structure is mounted on the adjacent side of two connecting frames through mounting holes. A driven component is fixedly connected to the adjacent end of each of the two first rotating structures. A support frame is fixedly connected to the adjacent end of each of the two driven components. Support components are mounted on the bottom of the inner wall of each support frame through multiple fixed plates. A docking frame is fixedly connected to the top of each set of support components. An integrated seat is fixedly connected between each of the two docking frames. Two second rotating structures are mounted on one side of the connecting frame through mounting holes. A driving component is fixedly connected to the adjacent end of each of the two second rotating structures. A triangular rotating head is slidably connected to the opposite end of each of the two second rotating structures. A latch is fixedly connected to the adjacent side of each of the two triangular rotating heads. A rotating component is mounted on the top of each of the two connecting frames through an adjusting component. A handrail is mounted on the top of each rotating component.

2. The high-load stable height-adjustable office chair according to claim 1, characterized in that, The mobile chassis includes a fixed block, multiple bent rods, and multiple moving wheels. One end of each of the multiple bent rods is connected to the outer surface of the fixed block, and the other end of each of the multiple bent rods is used to mount the moving wheels.

3. The high-load stable height-adjustable office chair according to claim 1, characterized in that, The lifting assembly includes a telescopic component, a docking structure, an adjusting structure, and a supporting structure. The telescopic component is installed on the top of the fixed block, the docking structure is used to install the supporting structure on the top of the telescopic component, and the adjusting structure is installed inside the supporting structure.

4. The high-load stable height-adjustable office chair according to claim 1, characterized in that, A fixed frame is installed on the top of the lifting assembly, and a placement frame is slidably connected to the front of the fixed frame.

5. The high-load stable height-adjustable office chair according to claim 1, characterized in that, The integrated seat includes a seat, side panels, lumbar support, headrest, and backrest. The backrest is located at the top of the seat at the back, the lumbar support is installed on the front of the backrest near the bottom, the headrest is installed at the top of the backrest, and the side panels are located on both sides of the seat and the backrest.

6. The high-load stable height-adjustable office chair according to claim 1, characterized in that, Both of the adjustment components have a support plate rotatably connected to their tops via a rotating component, and each support plate has two folding plates rotatably connected to its top via a rotating buckle.

7. The high-load stable height-adjustable office chair according to claim 6, characterized in that, The outer surfaces of both the tray and the folding plate are covered with soft material, and rotating buckle mounting openings are provided on both sides of both the tray and the folding plate.

8. The high-load stable height-adjustable office chair according to claim 6, characterized in that, Each of the two folded plates has a magnetic attraction structure installed on one of its adjacent sides. The magnetic attraction structure consists of two magnets that can attract each other.

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