Office chair with waist support structure

Abstract

The utility model discloses an office chair with a waist support structure, which comprises a seat, two sides of the bottom end of the seat are fixedly connected with support frames, the middle parts of two sides of the top end of the seat are fixedly connected with armrests, the rear end of the seat is provided with a backrest, the middle part of the top end of the backrest is fixedly connected with a headrest, and the lower part of the front end of the backrest is provided with a lifting structure. Comprising an upper fixing plate fixedly connected to the front end of a backrest, rotating holes are formed in the two sides of the top end of the upper fixing plate, connecting shafts are rotationally connected into the rotating holes, threaded rods are fixedly connected to the bottom ends of the connecting shafts on the two sides, and a lower fixing plate is rotationally connected to the bottom ends of the threaded rods on the two sides; a waist protection pad is arranged in front of the lifting structure, and a rotating device is arranged between the waist protection pad and the threaded block. The waist protection cushion has the advantages that the lifting structure is arranged, so that the waist protection cushion can be lifted to a proper position, and the waist protection cushion is suitable for most people; and a rotating device is arranged, so that the waist protection pad can be rotated to an angle more suitable for the waist shape of a human body.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair technical field, specifically point to the office chair with waist support structure. BACKGROUND

[0002] In the modern office environment, long time sitting work is widespread, resulting in many people face the problem of back pain. The traditional office chair lacks effective waist support, and it is difficult to meet the needs of the health of the office workers. Therefore, the office chair with waist support structure is particularly important to reduce the burden of the waist, prevent occupational diseases, improve office comfort and work efficiency.

[0003] And the existing office chair with waist support structure has some defects to be improved:

[0004] 1. In the prior art, the waist support plate is fixed on the office chair, and then abuts against the waist of the person, but the position is relatively fixed and cannot be adjusted in height. As known to all, the position of the waist of different heights is also different, and simply fixing in one place will limit the user group, and thus the equipment can only be effective for a part of people, and for others, not only can not play the role of waist support, but also can hurt the waist.

[0005] 2. In addition, in the prior art, the angle of the waist support plate cannot be adjusted, which will cause the convex part of the waist support plate and the shape of the waist arch to not match well together, the angle is not good, and thus the waist cannot be well abutted, and if abutting against the waist support plate for a long time, the convex part of the waist support plate may be worn to the user's waist, causing adverse effects.

[0006] In view of the above defects, improvement is urgently needed.

[0007] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be regarded as an acknowledgment or any form of suggestion that it forms prior art of this utility model. CONTENT OF THE UTILITY MODEL

[0008] The utility model solves the technical problem of overcoming the above problems and provides an office chair with a waist support structure.

[0009] To solve the above technical problems, the utility model provides a technical scheme of an office chair with a waist support structure, comprising:

[0010] A seat, both sides of the bottom end of the seat are fixedly connected with support frames, the middle parts of the top ends of both sides of the seat are fixedly connected with armrests, the rear end of the seat is fixedly connected with a backrest, and the middle part of the top end of the backrest is fixedly connected with a headrest.

[0011] The lifting structure is arranged at the lower part of the front end of the backrest, comprising an upper fixed plate fixedly connected to the lower part of the front end of the backrest, rotation holes are formed in the top of the two sides of the upper fixed plate, connecting shafts are rotatably connected in the rotation holes, threaded rods are fixedly connected to the bottom ends of the two connecting shafts, lower fixed plates are rotatably connected to the bottom ends of the two threaded rods, the lower fixed plates are fixedly connected to the backrest, and threaded blocks are threadedly connected to the threaded rods.

[0012] A waist pad is arranged in front of the lifting structure.

[0013] A rotating device is arranged between the waist pad and the threaded blocks.

[0014] As an improvement, the top ends of the two connecting shafts are fixedly connected with rotating handles.

[0015] As an improvement, the rotating device comprises a fixed frame fixedly connected to the front end of the threaded block, connection holes are formed in the two side walls of the fixed frame, and rotating shafts are rotatably connected in the two connection holes.

[0016] As an improvement, rotating blocks are fixedly connected to the proximal sides of the two rotating shafts, the rotating blocks are located in the fixed frame, and the waist pad is fixedly connected to the front end of the rotating block.

[0017] As an improvement, connecting blocks are fixedly connected to the distal sides of the two rotating shafts, torsional springs are arranged around the two rotating shafts, one end of the torsional spring away from the fixed frame is fixedly connected to the connecting block, and the proximal ends of the two torsional springs are fixedly connected to the fixed frame.

[0018] As an improvement, hydraulic telescopic rods with self-locking function are hingedly connected to the two sides of the top rear part of the fixed frame, and the top ends of the two hydraulic telescopic rods are hingedly connected to the waist pad.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] 1. The lifting structure is arranged, the threaded blocks on the threaded rods can be lifted by rotating the threaded rods through the use of the two connecting shafts, the waist plate can be lifted to a suitable position according to the needs of the user, the applicability of the equipment is greatly improved, and the economic benefit is high.

[0021] 2. In the utility model, the rotating device is arranged to cooperate with the waist plate. In the rotating device, the two hydraulic telescopic rods are used to push the waist plate to rotate, and then the waist plate can be rotated to a suitable angle according to the shape of the user's waist, so that the waist plate can better abut against the user's waist, and the waist care effect is better. DRAWINGS

[0022] Figure 1 is the office chair with waist support structure of the utility model Figure One .

[0023] Figure 2 is the office chair with waist support structure of the utility model Figure Two .

[0024] Figure 3 is the office chair with waist support structure of the utility model at A place enlarged view.

[0025] Figure 4 is the office chair with waist support structure of the utility model in the lifting structure perspective view.

[0026] Figure 5 is the office chair with waist support structure of the utility model in part device structure diagram.

[0027] Figure 6 is the office chair with waist support structure of the utility model at B place enlarged view.

[0028] Figure 7 is the office chair with waist support structure of the utility model in the rotating device perspective view.

[0029] As shown in the figure:

[0030] 1, seat; 2, support frame; 3, armrest;

[0031] 4, backrest; 5, headrest;

[0032] 6, lifting structure; 601, upper fixed plate; 602, rotating hole; 603, connecting shaft; 604, threaded rod; 605, lower fixed plate; 606, threaded block; 607, rotating handle;

[0033] 7, waist support pad;

[0034] 8, rotating device; 801, fixed frame; 802, connecting hole; 803, rotating shaft; 804, rotating block; 805, connecting block; 806, torsion spring; 807, hydraulic telescopic rod. DETAILED DESCRIPTION

[0035] The utility model will be further explained in detail in combination with the drawings.

[0036] The working principle of the utility model is as follows Figures 1-3As shown, the office chair with waist support structure comprises a seat 1, first, both sides of the bottom end of the seat 1 are fixedly connected with support frames 2, and the bottom end of each side of the support frame 2 is fixedly connected with a non-slip pad, then a cushion is fixedly connected to the middle of the top end of the seat 1, so that the user is more comfortable, and handrails 3 are arranged on both sides of the cushion, and the handrails 3 are fixedly connected to the seat 1;

[0037] Meanwhile, a backrest 4 is fixedly connected to the rear end of the seat 1, and a back cushion is fixedly connected to the upper portion of the front end of the backrest 4, and a headrest 5 is fixedly connected to the middle of the top end of the backrest 4, so that the user is more comfortable when using the office chair, and a waist support pad 7 is arranged on the front lower portion of the backrest 4, and the waist support pad 7 is used to resist the waist of the user.

[0038] In order to make the waist support pad 7 suitable for people of different heights, a lifting structure 6 is arranged on the lower portion of the front end of the backrest 4, and the lifting structure 6 is used to indirectly drive the waist support pad 7 to perform the lifting function;

[0039] Meanwhile, a rotating device 8 is arranged on the rear end of the waist support pad 7, so that the rotating device 8 can drive the waist support pad 7 to rotate to the appropriate position.

[0040] The above-mentioned structures together constitute the general appearance structure of the office chair with waist support structure.

[0041] According to Figures 1 to 4 , in order to further explain the specific working principle of the office chair with waist support structure, the lifting structure 6 comprises a lower fixed plate 605 fixedly connected to the lower portion of the front end of the backrest 4, and an upper fixed plate 601 is arranged above the lower fixed plate 605, and it should be noted that the upper fixed plate 601 is fixedly connected to the backrest 4, and the upper fixed plate 601 is provided with rotating holes 602 on both sides of the top end;

[0042] Then, threaded rods 604 are rotatably connected to both sides of the top end of the lower fixed plate 605, and the top end of each threaded rod 604 is fixedly connected with a connecting shaft 603, and the connecting shaft 603 is rotatably connected in the corresponding rotating hole 602, so that the rotation of the connecting shaft 603 drives the threaded rod 604 to rotate;

[0043] Then in order to facilitate the user to rotate the threaded rod 604, the top of the two connecting shafts 603 is passed through the rotating hole 602 and is fixedly connected with the rotating handle 607, the limiting device is arranged on the two rotating handles 607, the limiting device comprises the positioning shaft which is inserted into the rotating handle 607, then a plurality of positioning grooves which are arranged in a ring around the rotating hole 602 are formed on the upper fixing plate 601, the positioning shaft is inserted into the positioning groove, so that the rotating handle 607 can be stopped, it should be pointed out that the same is true for the two rotating handles 607, the rotating handle 607 can indirectly drive the threaded rod 604 to rotate, and the threaded rod 604 can be limited after stopping rotating.

[0044] Finally, the threaded blocks 606 are threadedly connected on the two threaded rods 604, so that the threaded blocks 606 can indirectly drive the waist support pad 7 to ascend and descend.

[0045] The technical effects achieved by the technical scheme composed of the above technical features are as follows: the two rotating handles 607 are rotated, the connecting shaft 603 fixedly connected with the rotating handle 607 drives the corresponding threaded rod 604 to rotate, when the two threaded rods 604 rotate together, the threaded block 606 threadedly connected with the threaded rod 604 can indirectly drive the waist support pad 7 to ascend and descend.

[0046] According to Figures 5 to 7 , in order to further explain the specific working principle of the office chair with the waist support structure, the rotating device 8 comprises the U-shaped fixing frame 801 fixedly connected to the front end of the threaded block 606, the connecting holes 802 are formed in the two side walls of the fixing frame 801, at the same time, the hydraulic telescopic rods 807 are rotatably connected to the two sides of the rear end of the fixing frame 801, it should be pointed out that the two hydraulic telescopic rods 807 have the self-locking function, the top of the two hydraulic telescopic rods 807 is hingedly connected to the waist support pad 7, the waist support pad 7 can be driven to rotate through the two hydraulic telescopic rods 807.

[0047] At the same time, the rotating block 804 is fixedly connected to the lower rear end of the waist support pad 7, it should be pointed out that the rotating block 804 is located in the fixing frame 801, the rotating shafts 803 are fixedly connected to the two sides of the rotating block 804, the rotating shafts 803 are rotatably connected in the corresponding connecting holes 802, the connecting blocks 805 are fixedly connected to the sides away from each other of the two rotating shafts 803, in addition, the torsional springs 806 are arranged around the two rotating shafts 803, the sides away from each other of the two torsional springs 806 are fixedly connected to the corresponding connecting blocks 805, and one end of the torsional spring 806 away from the connecting block 805 is fixedly connected to the fixing frame 801.

[0048] The technical effects achieved by the technical scheme composed of the above technical features are as follows: the working rods of the two hydraulic telescopic rods 807 are retracted inward, at this time, the hydraulic telescopic rods 807 can drive the waist support pad 7 to rotate to a suitable position, so that the device is suitable for different people, while the waist support pad 7 is rotating, the two rotating shafts 803 can drive the connecting blocks 805 to rotate together, and when the connecting blocks 805 rotate, the torsional springs 806 are driven to rotate.

[0049] The above describes the present application and its embodiments, which are not restrictive, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by the present application, without departing from the spirit of the present application, similar structural modes and embodiments can be designed without creative design, which should belong to the protection scope of the present application.

[0050] In addition, the electrical components in the text are all connected with the main controller and 220V mains, and the main controller can be a conventional known device such as a computer for control, the hydraulic telescopic rod in the text is connected with the oil circuit outside, and the detailed description of the known functions and known components is omitted in the specific embodiment of the present application. In order to ensure the compatibility of the device, the operation means adopted is consistent with the parameters of the market instruments.

Claims

1. An office chair having a lumbar support structure, characterised in that, Include: Chair (1), both sides of the bottom end of the chair (1) are fixedly connected with support frame (2), the middle part of both sides of the top end of the chair (1) is fixedly connected with armrest (3), the rear end of the chair (1) is fixedly connected with backrest (4), the top end of the backrest (4) is fixedly connected with headrest (5); Lifting structure (6), the lifting structure (6) is arranged at the lower part of the front end of the backrest (4), comprising an upper fixed plate (601) fixedly connected to the lower part of the front end of the backrest (4), both sides of the top end of the upper fixed plate (601) are provided with rotating holes (602), the rotating holes (602) are rotatably connected with connecting shafts (603), the bottom ends of the connecting shafts (603) on both sides are fixedly connected with threaded rods (604), the bottom ends of the threaded rods (604) on both sides are rotatably connected with lower fixed plates (605), the lower fixed plates (605) are fixedly connected to the backrest (4), the threaded rods (604) on both sides are screw connected with threaded blocks (606); Waist support pad (7), the waist support pad (7) is arranged in front of the lifting structure (6); Rotating device (8), the rotating device (8) is arranged between the waist support pad (7) and the threaded block (606).

2. The office chair having a waist support structure according to claim 1, characterized in that: The top end of the two connecting shafts (603) is fixedly connected with a rotating handle (607).

3. The office chair having a lumbar support structure of claim 1, wherein: The rotating device (8) includes a fixed frame (801) fixedly connected to the front end of the threaded block (606), both side walls of the fixed frame (801) are provided with connecting holes (802), both sides of the connecting holes (802) are rotatably connected with rotating shafts (803).

4. The office chair having a waist support structure according to claim 3, characterized in that: The proximal side of the rotating shaft (803) on both sides is fixedly connected with a rotating block (804), the rotating block (804) is located in the fixed frame (801), and the waist support pad (7) is fixedly connected to the front end of the rotating block (804).

5. The office chair having a lumbar support structure of claim 4, wherein: The distal side of the rotating shaft (803) on both sides is fixedly connected with a connecting block (805), and the periphery of the rotating shaft (803) on both sides is provided with a torsional spring (806), one end of the torsional spring (806) away from the fixed frame (801) is fixedly connected to the connecting block (805), and the proximal end of the torsional spring (806) on both sides is fixedly connected to the fixed frame (801).

6. The office chair having a waist support structure according to claim 4, wherein: Both sides of the top end of the fixed frame (801) are hinged with hydraulic telescopic rods (807) with self-locking function, and the top ends of the hydraulic telescopic rods (807) on both sides are hinged to the waist support pad (7).

Images