Adjustable chair

Abstract

The utility model discloses an adjustable chair which comprises a chair seat and a chair back which are connected with each other, the chair back comprises a waist supporting part, a back supporting part and a head supporting part, the waist supporting part is connected with the back supporting part through an angle adjuster, and the back supporting part is connected with the head supporting part through an angle adjuster. And multi-angle adjustment between the waist supporting part and the back supporting part as well as between the back supporting part and the head supporting part which are connected with each other is realized through the angle adjusters. The multi-angle adjustment between the waist supporting part and the back supporting part as well as between the back supporting part and the head supporting part which are connected with each other is realized through the angle adjustor, multiple optional adjusting modes are available, so that a human body can adjust and use the chair conveniently according to respective requirements, and the chair is more comfortable to use; the back supporting part and the head supporting part of the chair back can be adjusted forwards through the angle adjustor to be folded and stored, so that dust is prevented, and the placement space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of home furnishing industry, in particular to an adjustable chair. Background Art

[0002] Chair refers to various resting seats equipped for work or rest convenience in daily work and social activities. Existing chairs usually include a seat and a backrest.

[0003] The backrest and seat of the existing conventional chair need to be connected, which is troublesome to assemble, and the backrest cannot be folded forward and adjusted at multiple angles. Utility Model Content

[0004] In order to solve the above technical problems, the utility model designs an adjustable chair.

[0005] The utility model adopts the following technical solutions:

[0006] An adjustable chair comprises a seat and a chair back connected to each other, wherein the chair back comprises a lumbar support portion and a back support portion, wherein the lumbar support portion and the back support portion are connected to each other via angle adjusters, and multi-angle adjustment between the connected lumbar support portion and the back support portion can be achieved via the angle adjusters.

[0007] Preferably, the chair back further includes a head support portion, which is connected to the back support portion via an angle adjuster, and the angle adjuster is used to achieve multi-angle adjustment between the connected head support portion and the back support portion.

[0008] Preferably, the chair back also includes a head support portion, and a lifting and adjusting mounting structure is installed between the head support portion and the back support portion to adjust the height of the head support portion installed on the back support portion. The head support portion and the lifting and adjusting mounting structure are rotatably connected by bolts, and the head support portion is fixed by bolts after rotation adjustment.

[0009] Preferably, the seat and the chair back are respectively fixedly connected to the armrests and are fixedly connected by assembling the armrests.

[0010] Preferably, the seat comprises a hip support portion and a leg support portion, and the hip support portion and the leg support portion are connected via an angle adjuster, and multi-angle adjustment between the connected hip support portion and the leg support portion is achieved via the angle adjuster.

[0011] Preferably, the armrest is an adjustable armrest 1, which includes an armrest seat and a movable armrest. The movable armrest is rotatably connected to the armrest seat via a rotating shaft, and a limiting structure is provided on the rotating shaft to limit the rotation angle of the movable armrest.

[0012] Preferably, the angle adjuster comprises a bottom rod and an adjusting rod, the bottom rod and the adjusting rod are hinged, a gear is arranged outside the hinge point of the adjusting rod, and an angle limit adjusting piece is correspondingly arranged on the bottom rod to clamp the limit gear. By adjusting the position of the angle limit adjusting piece clamping the limit gear, multi-angle adjustment between the connected parts can be achieved. The angle adjuster can also be replaced by a gas spring or an adjuster with other functions for angle adjustment.

[0013] Preferably, a low-rotation chassis is installed at the bottom of the seat, and the low-rotation chassis includes an annular chassis, the center of the annular chassis is rotatably connected to the bottom of the seat through a rotating shaft, or a universal roller is installed on the annular chassis.

[0014] Preferably, a high-rotating chassis is installed at the bottom of the seat, and the high-rotating chassis includes a control rod, a lifting rod, a guide wheel, a five-pointed star disk, and a hydraulic cylinder. The control rod and the hydraulic cylinder adjust the lifting of the lifting rod, and the lifting rod is rotatably connected to the bottom of the seat, the guide wheel is connected to the five-pointed star disk, the five-pointed star disk is fixedly connected to the hydraulic cylinder, and the hydraulic cylinder is movably connected to the lifting rod.

[0015] Preferably, the armrest is an adjustable armrest 2, which can be adjusted to move up and down, rotate, and move forward and backward.

[0016] The beneficial effects of the utility model are: (1) the utility model realizes multi-angle adjustment between the connected waist support part and the back support part and between the back support part and the head support part respectively through the angle adjuster, and there are many optional adjustment methods to facilitate the human body to adjust and use according to their respective needs, and the use is more comfortable; (2) the back support part and the head support part of the chair back can be adjusted forward by the angle adjuster and folded and retracted, which is dust-proof and saves placement space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present utility model;

[0019] Figure 3 yes Figure 2 A schematic diagram of a structure when the handrail is removed;

[0020] Figure 4 This is a structural schematic diagram of Embodiment 2 of the present utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of Embodiment 2 of the present utility model;

[0022] Figure 6 This is a structural schematic diagram of Embodiment 3 of the present utility model;

[0023] Figure 7 This is a structural schematic diagram of Embodiment 4 of the present utility model;

[0024] Figure 8 It is a structural schematic diagram of an angle adjuster between the waist support part and the back support part in the utility model;

[0025] Fig. 9 It is a structural schematic diagram of the angle adjuster between the head support part and the back support part and the hip support part and the leg support part in the utility model;

[0026] Fig.10 This is a schematic diagram of the internal structure of Embodiment 5 of the present utility model;

[0027] Fig.11 yes Fig.10 A structural schematic diagram of a middle lifting and lowering adjustment installation structure;

[0028] Fig.12 It is a schematic diagram of the structure of the utility model after folding;

[0029] In the figure: 1. seat, 2. backrest, 3. adjustable armrest 1, 4. lumbar support, 5. back support, 6. head support, 7. hip support, 8. leg support, 9. angle adjuster, 10. low rotation chassis, 11. high rotation chassis, 12. bottom rod, 13. adjustment rod, 14. gear, 15. universal roller, 16. adjustable armrest 2, 17. lifting adjustment installation structure, 18. lifting adjustment seat, 19. lifting adjustment rod. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0031] Example 1: Figure 1-Figure 3 As shown, an adjustable chair comprises a seat 1 and a backrest 2 connected to each other, the backrest comprises a waist support 4, a back support 5 and a head support 6, the waist support and the back support as well as the back support and the head support are connected respectively through an angle adjuster 9, and the angle adjuster is used to respectively realize multi-angle adjustment between the connected waist support and the back support as well as the back support and the head support. The seat comprises a hip support 7 and a leg support 8, the hip support and the leg support are connected through an angle adjuster, and the angle adjuster is used to realize multi-angle adjustment between the connected hip support and the leg support.

[0032] like Figure 8 and Fig. 9As shown, the angle adjuster includes a bottom rod 12 and an adjusting rod 13, the bottom rod and the adjusting rod are hinged, a gear 14 is arranged outside the hinge point of the adjusting rod, and an angle limit adjustment plate is correspondingly arranged on the bottom rod to clamp the limit gear. By adjusting the position of the angle limit adjustment plate clamping the limit gear, multiple angle adjustments between the connected parts can be achieved. The angle adjuster can replace the gear adjuster suitable for any angle adjustment. Figure 8 Shown is the angle adjuster between the lumbar support and the back support. Fig. 9 Shown are angle adjusters between the head support and the back support, as well as the hip support and the leg support.

[0033] The seat and the backrest are respectively fixedly connected to the armrests, and are fixedly connected by the armrest assembly. The armrest is an adjustable armrest 3, which includes an armrest seat and a movable armrest. The movable armrest is rotatably connected to the armrest seat through a rotating shaft, and a limited position structure is arranged on the rotating shaft to limit the rotation angle of the movable armrest.

[0034] Example 2: Figure 4 and Figure 5 As shown, a low rotation chassis 10 is installed at the bottom of the seat, and the low rotation chassis includes an annular chassis, and the center of the annular chassis is rotatably connected to the bottom of the seat through a rotating shaft. The rest of the structure is the same as that of embodiment 1.

[0035] Example 3: Figure 6 As shown, a high rotating chassis 11 is installed at the bottom of the seat, and the high rotating chassis includes a control rod, a lifting rod, a guide wheel, a five-pointed star plate, and a hydraulic cylinder. The control rod and the hydraulic cylinder adjust the lifting of the lifting rod, and the lifting rod is rotatably connected to the bottom of the seat, the guide wheel is connected to the five-pointed star plate, the five-pointed star plate is fixedly connected to the hydraulic cylinder, and the hydraulic cylinder is movably connected to the lifting rod. The rest of the structure is the same as that of Example 1.

[0036] Example 4: Figure 7 As shown, a high rotating chassis is installed at the bottom of the seat, the high rotating chassis is rotatably connected to the bottom of the seat, and four chair legs are detachably connected to the bottom of the high rotating chassis. The rest of the structure is the same as that of embodiment 1.

[0037] Example 5: Fig.10 As shown, a lifting and adjusting mounting structure 17 is also installed between the head support part and the back support part to adjust the height of the head support part installed on the back support part. The armrest is an adjustable armrest 16, which can realize the lifting, rotation and forward and backward movement of the armrest. A low rotation chassis 10 is installed at the bottom of the seat, and the low rotation chassis includes an annular chassis, on which a universal roller 15 is installed, and the annular chassis is fixedly connected to the seat. The rest of the structure is the same as that of Example 1. Fig.11As shown, the lifting adjustment installation structure includes a lifting adjustment seat 18 and a lifting adjustment rod 19. The lifting adjustment seat and the lifting adjustment rod are fastened and fixed by bolts. The lifting adjustment rod adjusts the height of the head support part installed on the back support part along the lifting adjustment seat.

[0038] The utility model realizes multi-angle adjustment between the connected waist support part and the back support part and the back support part and the head support part respectively through the angle adjuster, and has many optional adjustment modes, so as to facilitate the human body to adjust and use according to respective needs, and to make the use more comfortable; the back support part and the head support part of the chair back can be adjusted forward by the angle adjuster, and can be folded and retracted, such as Fig.12 As shown, it is dustproof and saves placement space.

[0039] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. An adjustable chair comprising a seat and a back connected to each other, characterized in that: The chair back comprises a lumbar support portion and a back support portion, wherein the lumbar support portion and the back support portion are respectively connected via angle adjusters, and multi-angle adjustment between the connected lumbar support portion and the back support portion is achieved via the angle adjusters.

2. The adjustable chair according to claim 1, characterized in that: The chair back also includes a head support portion, which is connected to the back support portion via an angle adjuster, and the angle adjuster is used to achieve multi-angle adjustment between the connected head support portion and the back support portion.

3. The adjustable chair according to claim 1, characterized in that: The chair back also includes a head support portion, and a lifting and adjusting mounting structure is installed between the head support portion and the back support portion to adjust the height of the head support portion installed on the back support portion. The head support portion and the lifting and adjusting mounting structure are rotatably connected by bolts, and the head support portion is fixed by bolts after rotation adjustment.

4. The adjustable chair according to claim 1, characterized in that: The chair seat and the chair back are respectively fixedly connected to the armrests and are fixedly connected by assembling the armrests.

5. The adjustable chair according to claim 1, characterized in that: The seat comprises a buttocks supporting part and a leg supporting part, and the buttocks supporting part and the leg supporting part are connected via an angle adjuster, and multi-angle adjustment between the connected buttocks supporting part and the leg supporting part can be achieved via the angle adjuster.

6. The adjustable chair according to claim 4, characterized in that: The armrest is an adjustable armrest 1, which includes an armrest seat and a movable armrest. The movable armrest is rotatably connected to the armrest seat via a rotating shaft, and a limiting structure is arranged on the rotating shaft to limit the rotation angle of the movable armrest.

7. The adjustable chair according to claim 1, 2, 3 or 5, characterized in that: The angle adjuster includes a bottom rod and an adjusting rod, the bottom rod and the adjusting rod are hinged, a gear is arranged outside the hinge point of the adjusting rod, and an angle limit adjustment plate is correspondingly arranged on the bottom rod to clamp the limit gear. By adjusting the position of the angle limit adjustment plate to clamp the limit gear, multi-angle adjustment between the connected parts can be achieved.

8. The adjustable chair according to claim 1, characterized in that: A low-rotation chassis is installed at the bottom of the seat, and the low-rotation chassis includes an annular chassis, the center of which is rotatably connected to the bottom of the seat through a rotating shaft, or a universal roller is installed on the annular chassis.

9. The adjustable chair according to claim 1, characterized in that: A high-rotating chassis is installed at the bottom of the seat, and the high-rotating chassis includes a control rod, a lifting rod, a guide wheel, a five-pointed star plate, and a hydraulic cylinder. The control rod and the hydraulic cylinder adjust the lifting of the lifting rod, and the lifting rod is rotatably connected to the bottom of the seat, the guide wheel is connected to the five-pointed star plate, the five-pointed star plate is fixedly connected to the hydraulic cylinder, and the hydraulic cylinder is movably connected to the lifting rod.

10. The adjustable chair according to claim 4, characterized in that: The armrest is an adjustable armrest 2, which can realize the armrest lifting, rotating and forward and backward sliding adjustment.

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