Double-adjustment comfortable chair

Abstract

The utility model belongs to the field of office furniture, and particularly relates to a double-adjustment comfortable chair which comprises a movable foot stool, universal wheels are rotatably connected to the bottom of the movable foot stool, a telescopic air cylinder is connected to the top of the movable foot stool in an inserted mode, a control structure is connected to the top of the air cylinder in an inserted mode, and a chair cushion is arranged above the control structure. A chair back is arranged on the control structure. According to the double-adjustment comfortable chair, the overall height of the chair can be adjusted through the telescopic air cylinder, the telescopic air cylinder stretches out and draws back to drive the control base to move up and down, and then the chair cushion, the chair back and other components integrally ascend or descend. The relative position of the base and the chair cushion can be changed and controlled by shaking a crank handle and utilizing the cooperation of a synchronizing shaft, an oblique bevel gear, a rotating piece, a threaded rod and other components, the angle of the chair cushion can be adjusted, and the adjusting mode can meet the requirements of different users for the height and angle of the chair in different scenes; and the use comfort is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of office furniture technology, specifically a dual-adjustable comfort chair. Background Technology

[0002] Office chairs occupy a vital position in modern office environments and various social activities. They are various types of chairs that are carefully designed and equipped to meet people's needs in their daily work and social activities.

[0003] Currently, most office chairs rely solely on springs with fixed tension to adjust the seat tilt angle, a method with significant drawbacks. Since the spring tension cannot be changed, heavier users experience greater pressure on the seat, leading to an excessively large tilt angle that not only fails to meet normal usage requirements but may even damage the chair. Conversely, lighter users experience less pressure on the seat, resulting in a smaller tilt angle that affects comfort. Therefore, we propose a dual-adjustment comfort chair. Utility Model Content

[0004] The main objective of this invention is to provide a dual-adjustable comfort chair that can solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention proposes a dual-adjustable comfort chair, comprising a movable leg, with casters rotatably connected to the bottom of the movable leg, a telescopic cylinder inserted into the top of the movable leg, a control structure inserted into the top of the cylinder, a seat cushion disposed above the control structure, a seat back disposed on the control structure, a headrest detachably connected to the outer wall of the seat back, and a support frame disposed on the control structure. The control structure includes:

[0006] A control base is provided, wherein the telescopic end of the cylinder is inserted into the control base, and a connecting rod is rotatably connected to the inner wall of the control base.

[0007] A connecting plate is provided, the bottom of which abuts against the connecting rod, and a threaded rod is fixedly connected to the bottom of the connecting plate.

[0008] A rotating component is rotatably connected to the top of the control base, and an adjusting component is fixedly connected to the outer wall of the control base.

[0009] Preferably, the top of the rotating component has a threaded hole, the inner wall of the threaded hole is threaded with a threaded rod, and the outer wall of the rotating component is fixedly connected with a helical bevel gear.

[0010] Preferably, the inner wall of the adjusting component is rotatably connected to a synchronous shaft. One end of the synchronous shaft is fixedly connected to a crank handle, and the other end of the synchronous shaft is fixedly connected to a second helical bevel gear. The second helical bevel gear meshes with the first helical bevel gear. By cranking the crank handle, the synchronous shaft is rotated, which in turn drives the second helical bevel gear to rotate. Through the meshing of the first and second helical bevel gears, the rotating component is rotated.

[0011] Preferably, a seat cushion is rotatably connected to the top of the control base, and the seat cushion has a rotating groove.

[0012] Preferably, the outer wall of the control base is rotatably connected to a chair back, the chair back has a ventilation groove, and the outer wall of the chair back is provided with a ventilation net, which can cover the ventilation groove.

[0013] Preferably, the outer wall of the support frame is rotatably connected to the outer wall of the seat cushion, the top of the support frame is rotatably connected to a rotating arm, and the end of the rotating arm away from the support frame is rotatably connected to an armrest. Two sets of support frame, rotating arm and armrest are provided.

[0014] This utility model provides a dual-adjustable comfort chair. It has the following beneficial effects:

[0015] (1) The dual-adjustable comfort chair can adjust the overall height of the seat through a telescopic cylinder. The telescopic cylinder moves the control base up and down, thereby raising or lowering the seat cushion, backrest and other components. Moreover, by cranking the handle, the relative position of the control base and the seat cushion can be changed through the cooperation of components such as the synchronous shaft, bevel gear, rotating parts and threaded rod, so as to adjust the angle of the seat cushion. This adjustment method can meet the needs of different users for seat height and angle in different scenarios, greatly improving the comfort of use.

[0016] (2) The design of the dual-adjustable comfort chair support frame, rotating arm and armrests allows the armrests to be adjusted in multiple directions. When the seat cushion angle changes or the user needs to adjust the armrest position, the armrest can rotate around the support frame via the rotating arm, and the support frame can also rotate on the seat cushion. This design can meet the personalized needs of different users for the armrest position. Whether it is a user of different body type or in different working postures, a comfortable armrest position can be found, which further improves the comfort and practicality of the office chair. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 3 ;

[0021] Figure 4 This is an exploded cross-sectional view of the control base and adjustment components of this utility model.

[0022] Figure 5 This is a schematic diagram of the rotating component and connecting rod of this utility model.

[0023] The following are the diagram numbers: 1. Movable leg; 2. Casters; 3. Cylinder; 4. Control structure; 41. Control base; 42. Connecting rod; 43. Connecting plate; 44. Threaded rod; 45. Rotating component; 46. Adjusting component; 461. Synchronous shaft; 462. Hand crank; 5. Seat cushion; 6. Seat back; 61. Ventilation groove; 7. Headrest; 8. Support frame; 9. Rotating arm; 10. Armrest.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] Please see Figure 1 - Figure 5This utility model proposes a dual-adjustable comfort chair, including a movable leg 1. A universal wheel 2 is rotatably connected to the bottom of the movable leg 1. A telescopic cylinder 3 is inserted into the top of the movable leg 1. The telescopic cylinder 3 is a conventional chair type and will not be described in detail. A control structure 4 is inserted into the top of the cylinder 3. A seat cushion 5 is placed above the control structure 4. A backrest 6 is placed on the control structure 4. A headrest 7 is detachably connected to the outer wall of the backrest 6. A support frame 8 is placed on the control structure 4. The control structure 4 includes a control base 41. The telescopic end of the cylinder 3 is inserted into the control base 41. A connecting rod 42 is rotatably connected to the inner wall of the control base 41. A connecting plate 43 abuts against the bottom of the connecting rod 42. The control base 41 and the connecting rod 42 are elastically connected by compression springs. Two sets of compression springs are provided. A threaded rod 44 is fixedly connected to the bottom of the connecting plate 43. A rotating component 45 is rotatably connected to the top of the control base 41. An adjusting component 46 is fixedly connected to the outer wall of the control base 41.

[0027] In this utility model, the top of the rotating part 45 is provided with a threaded hole, and a threaded rod 44 is threadedly connected to the inner wall of the threaded hole. A first helical bevel gear is fixedly connected to the outer wall of the rotating part 45. A synchronous shaft 461 is rotatably connected to the inner wall of the adjusting part 46. A crank handle 462 is fixedly connected to one end of the synchronous shaft 461, and a second helical bevel gear is fixedly connected to the other end of the synchronous shaft 461. The first helical bevel gear and the second helical bevel gear mesh with each other. By cranking the crank handle 462, the synchronous shaft 461 is driven to rotate, which in turn drives the second helical bevel gear to rotate. Through the meshing of the first helical bevel gear and the second helical bevel gear, the first helical bevel gear rotates, which in turn drives the rotating part 45 to rotate, causing the threaded rod 44 on the rotating part 45 to move up and down, thereby changing the position of the connecting plate 43. A seat cushion 5 is rotatably connected to the top of the control base 41. When the connecting plate 43 moves upward, it pushes the bottom of the seat cushion 5, causing the seat cushion 5 to rotate on the control base 41.

[0028] Furthermore, the outer wall of the control base 41 is rotatably connected to the backrest 6, the seat cushion 5 has a rotating groove, the inner wall of the rotating groove is rotatably connected to the support frame 8, the backrest 6 has a ventilation groove 61, the outer wall of the backrest 6 is provided with a ventilation net, the ventilation net can cover the ventilation groove 61, the outer wall of the support frame 8 is rotatably connected to the outer wall of the seat cushion 5, the top of the support frame 8 is rotatably connected to the rotating arm 9, and the end of the rotating arm 9 away from the support frame 8 is rotatably connected to the armrest 10. There are two sets of support frame 8, rotating arm 9 and armrest 10.

[0029] When in use, when it is necessary to adjust the seat height, the overall height of the seat is initially adjusted by controlling the extension and retraction of the telescopic cylinder 3. The extension and retraction end of the telescopic cylinder 3 drives the control base 41 to move up and down, thereby causing the seat cushion 5, seat back 6 and other components to rise or fall as a whole.

[0030] When the angle of the seat cushion 5 changes or the user needs to adjust the position of the armrest, the armrest 10 can rotate around the support frame 8 via the rotating arm 9. At the same time, the support frame 8 can also rotate on the outer wall of the seat cushion 5, thereby realizing multi-directional adjustment of the position of the armrest 10 to meet the comfort needs of different users.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A dual-adjustable comfort chair, comprising a movable leg (1), characterized in that: The bottom of the movable leg (1) is rotatably connected to casters (2), the top of the movable leg (1) is connected to a telescopic cylinder (3), the top of the cylinder (3) is connected to a control structure (4), a seat cushion (5) is provided above the control structure (4), a seat back (6) is provided on the control structure (4), a headrest (7) is detachably connected to the outer wall of the seat back (6), and a support frame (8) is provided on the control structure (4). The control structure (4) includes: Control base (41), the telescopic end of the cylinder (3) is inserted into the control base (41), and the inner wall of the control base (41) is rotatably connected to the connecting rod (42). A connecting plate (43) is attached to the bottom of the connecting rod (42), and a threaded rod (44) is fixedly connected to the bottom of the connecting plate (43). Rotating component (45) is rotatably connected to the top of the control base (41), and adjusting component (46) is fixedly connected to the outer wall of the control base (41).

2. The dual-adjustment comfort chair according to claim 1, characterized in that: The top of the rotating part (45) is provided with a threaded hole, and a threaded rod (44) is threadedly connected to the inner wall of the threaded hole. A helical bevel gear is fixedly connected to the outer wall of the rotating part (45).

3. The dual-adjustment comfort chair according to claim 1, characterized in that: The inner wall of the adjusting member (46) is rotatably connected to a synchronous shaft (461). One end of the synchronous shaft (461) is fixedly connected to a crank handle (462), and the other end of the synchronous shaft (461) is fixedly connected to a second bevel gear. The second bevel gear meshes with the first bevel gear.

4. The dual-adjustment comfort chair according to claim 1, characterized in that: A seat cushion (5) is rotatably connected to the top of the control base (41).

5. A dual-adjustable comfort chair according to claim 1, characterized in that: The outer wall of the control base (41) is rotatably connected to a chair back (6), and a ventilation groove (61) is provided on the chair back (6).

6. A dual-adjustable comfort chair according to claim 1, characterized in that: The outer wall of the support frame (8) is rotatably connected to the inner wall of the seat cushion (5), and a rotating arm (9) is rotatably connected to the top of the support frame (8). An armrest (10) is rotatably connected to the end of the rotating arm (9) away from the support frame (8).

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