Office chair with lumbar support

Abstract

The utility model relates to the technical field of office chairs, and discloses an office chair with lumbar support, including a connecting column slidably connected to the inner side of a slide groove, the front side of the connecting column is fixedly connected to the rear side of a lumbar pad, the outer wall of the connecting column is slidably connected to a transmission plate, the inner side of the backrest is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to the right side of the transmission plate, the outer wall of the baffle is fixedly connected to a controller, and a moving mechanism is provided at the bottom of the backrest, and the moving mechanism is used to adjust the position of the backrest on the seat cushion. In the utility model, the angle of the lumbar pad is adjusted by the cooperation of the servo motor, the rotating shaft, the transmission plate and the connecting column. When the user sits on the chair, the servo motor can be started by the controller to adjust the angle of the lumbar pad according to the user's waist curve and comfort requirements, so that it can better fit the user's waist.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an office chair with a waist support. Background Art

[0002] An office chair is a chair designed specifically for an office environment. It is designed to provide comfort and support for people who sit at a desk for long periods of time. The design of an office chair focuses on ergonomics to reduce physical fatigue and potential health problems caused by long hours of work. Choosing a suitable office chair is of great significance to improving work efficiency and maintaining a good working state.

[0003] Installing a lumbar cushion on the seat can provide better comfort and health protection for people who sit in the office for a long time, ensuring that the waist is fully supported and protected. This can not only relieve the waist fatigue and pain caused by long-term sitting, but also help maintain a correct sitting posture and prevent the occurrence of spinal diseases.

[0004] However, the lumbar support of traditional office chairs is fixed and cannot be adjusted according to the different needs of users. Different people have different lumbar curves and body shapes. Fixed lumbar support is difficult to meet the needs of everyone and cannot provide precise lumbar support. Therefore, an office chair with lumbar support is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an office chair with lumbar support, aiming to improve the problem that the lumbar support pad of the office chair in the prior art is fixed and cannot be adjusted according to different needs of users.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an office chair with lumbar support comprises a seat cushion, the left and right sides of the outer wall of the seat cushion are fixedly connected with baffles, the rear side of the seat cushion is provided with a backrest, the front side of the backrest is provided with a lumbar pad, the front side of the backrest is provided with a slide groove, the inner side of the slide groove is slidably connected with a connecting column, the front side of the connecting column is fixedly connected to the rear side of the lumbar pad, the outer wall of the connecting column is slidably connected with a transmission plate, the inner side of the backrest is fixedly connected with a servo motor, the output end of the servo motor is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected to the right side of the transmission plate, the outer wall of the baffle is fixedly connected with a controller, and the bottom of the backrest is provided with a moving mechanism, and the moving mechanism is used to adjust the position of the backrest on the seat cushion.

[0007] As a further description of the above technical solution:

[0008] The moving mechanism includes a connecting plate, the outer wall of which is fixedly connected to the bottom of the backrest, and both ends of the connecting plate are fixedly connected with sliders, the inner side of the left slider is slidably connected to a support column, and the inner side of the right slider is slidably connected to a screw, and the rear end of the screw is fixedly connected to a rotating wheel, and grooves are provided on adjacent sides of the two baffles, and the support columns and screws are arranged on the inner sides of the corresponding grooves.

[0009] As a further description of the above technical solution:

[0010] The tops of the two baffles are fixedly connected to the handrails, and the outer walls of the handrails are rounded.

[0011] As a further description of the above technical solution:

[0012] The bottom of the seat cushion is fixedly connected with a telescopic column, and the bottom of the telescopic column is fixedly connected with a supporting column.

[0013] As a further description of the above technical solution:

[0014] The bottom of the pillars are fixedly connected with a plurality of wheels, and the outer wall of the telescopic column is provided with a handle.

[0015] As a further description of the above technical solution:

[0016] A heat dissipation hole is provided on the rear side of the backrest, and the heat dissipation hole is arranged on the outer wall of the servo motor.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the rotating wheel is provided with anti-skid grooves, and the outer wall of the rotating wheel is made of rubber material.

[0019] As a further description of the above technical solution:

[0020] The bottom of the backrest is slidably connected to the top of the seat cushion.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the angle of the lumbar support pad is adjusted through the cooperation of the servo motor, the rotating shaft, the transmission plate and the connecting column. When the user sits on the chair, the servo motor can be started through the controller to adjust the angle of the lumbar support pad according to his or her waist curve and comfort requirements. This can better fit the user's waist, provide more precise support, and reduce waist fatigue and injury.

[0023] 2. In the utility model, the screw is driven to rotate by rotating the rotating wheel, and then the movement of the slider is accurately controlled to achieve accurate adjustment of the backrest position. When the user needs to work closer to the desk, the backrest can be adjusted forward to reduce the distance between the body and the desk and improve work efficiency. When it is necessary to relax and rest, the backrest can be adjusted backward to obtain a more comfortable sitting posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of an office chair with lumbar support proposed by the utility model;

[0025] Figure 2 This is a schematic structural diagram of the inner side of the backrest of the office chair with lumbar support proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the output end of the servo motor of the office chair with lumbar support proposed by the utility model;

[0027] Figure 4 A rear view of the office chair with lumbar support proposed by the present invention;

[0028] Figure 5 This is a schematic structural diagram of the moving mechanism of the office chair with lumbar support proposed by the utility model.

[0029] Legend:

[0030] 1. Cushion; 2. Moving mechanism; 201. Groove; 202. Screw; 203. Rotating wheel; 204. Sliding block; 205. Connecting plate; 206. Support column; 3. Backrest; 4. Lumbar pad; 5. Servo motor; 6. Rotating shaft; 7. Transmission plate; 8. Connecting column; 9. Slide; 10. Heat dissipation hole; 11. Baffle; 12. Armrest; 13. Controller; 14. Telescopic column; 15. Pillar; 16. Wheel; 17. Handle; 18. Anti-slip pattern. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3The utility model provides an embodiment of an office chair with lumbar support, comprising a seat cushion 1, the left and right sides of the outer wall of the seat cushion 1 are fixedly connected with baffles 11, the rear side of the seat cushion 1 is provided with a backrest 3, the front side of the backrest 3 is provided with a lumbar pad 4, the front side of the backrest 3 is provided with a slide groove 9, the inner side of the slide groove 9 is slidably connected with a connecting column 8, the front side of the connecting column 8 is fixedly connected to the rear side of the lumbar pad 4, the outer wall of the connecting column 8 is slidably connected with a transmission plate 7, the inner side of the backrest 3 is fixedly connected with a servo motor 5, and the output end of the servo motor 5 is fixedly connected with a rotating shaft 6, the outer wall of the rotating shaft 6 is fixedly connected to the right side of the transmission plate 7, the outer wall of the baffle 11 is fixedly connected to the controller 13, the bottom of the backrest 3 is provided with a moving mechanism 2, and the moving mechanism 2 is used to adjust the position of the backrest 3 on the seat cushion 1; the tops of the two baffles 11 are fixedly connected to the armrests 12, and the outer walls of the armrests 12 are rounded; the bottom of the seat cushion 1 is fixedly connected to a telescopic column 14, the bottom of the telescopic column 14 is fixedly connected to a pillar 15, and the bottom of the pillar 15 is fixedly connected to a plurality of wheels 16, and the outer wall of the telescopic column 14 is provided with a handle 17;

[0033] Specifically, the lumbar pad 4 can be adjusted in angle through the cooperation of the servo motor 5, the rotating shaft 6, the transmission plate 7 and the connecting column 8, which can better fit the user's waist curve, provide precise support, and effectively reduce waist fatigue and injury. Different users have different waist requirements. This function can meet personalized needs, allowing everyone to find the waist support angle that suits them best. The outer wall of the armrest 12 is rounded, which not only provides arm support, but also avoids scratches, increasing safety and comfort in use. The telescopic column 14 can adjust the seat height through the handle 17 to adapt to the leg length and work requirements of different users, maintain a correct sitting posture, and reduce leg pressure. The multiple wheels 16 at the bottom of the pillar 15 allow the office chair to be easily moved, making it convenient for users to switch between different work areas and improve work efficiency.

[0034] Refer to the attached Figure 5 The moving mechanism 2 includes a connecting plate 205, the outer wall of which is fixedly connected to the bottom of the backrest 3, and both ends of the connecting plate 205 are fixedly connected to sliders 204, the inner side of the left slider 204 is slidably connected to a support column 206, and the inner side of the right slider 204 is slidably connected to a screw 202, and the rear end of the screw 202 is fixedly connected to a rotating wheel 203, and grooves 201 are provided on adjacent sides of the two baffles 11, and the support column 206 and the screw 202 are both arranged on the inner side of the corresponding grooves 201; the bottom of the backrest 3 is slidably connected to the top of the cushion 1.

[0035] Specifically, the screw rod 202 is driven to rotate by rotating the rotating wheel 203, so that the slider 204 slides on the screw rod 202 and the support column 206, thereby driving the connecting plate 205 and the backrest 3 to move, the left slider 204 slides on the support column 206, and the right slider 204 slides on the screw rod 202. This double sliding structure provides stable support for the movement of the backrest 3. The support column 206 and the screw rod 202 are respectively located in the groove 201, making the entire moving mechanism 2 more stable and reducing shaking and instability.

[0036] Refer to the attached Figure 4 A heat dissipation hole 10 is provided on the rear side of the backrest 3, and the heat dissipation hole 10 is arranged on the outer wall of the servo motor 5; an anti-slip pattern 18 is provided on the outer wall of the rotating wheel 203, and the outer wall of the rotating wheel 203 is made of rubber material.

[0037] Specifically, the heat dissipation holes 10 are arranged on the outer wall of the servo motor 5, which can effectively dissipate the heat generated by the servo motor 5 when it is working. Good heat dissipation can prevent the motor from overheating, thereby extending the service life of the servo motor 5 and reducing the cost of repair or replacement due to motor failure. The outer wall of the rotating wheel 203 is made of rubber material, which feels soft and comfortable, and will not cause discomfort to the hands during operation.

[0038] Working principle: When the user sits on the seat cushion 1, the body leans on the backrest 3, and the waist pad 4 is located at the waist position. At this time, the user can start the servo motor 5 through the controller 13. After the servo motor 5 is started, the rotating shaft 6 at its output end starts to rotate. The rotation of the rotating shaft 6 drives the transmission plate 7 fixedly connected thereto to swing, so that it contacts the connecting column 8, pushing the connecting column 8 to slide in the slide groove 9, thereby adjusting the angle of the waist pad 4;

[0039] When the backrest position needs to be adjusted, the user rotates the wheel 203, and the rotation of the wheel 203 drives the screw 202 to rotate. When the screw 202 rotates, the right slider 204 threadedly connected thereto moves along the axial direction of the screw 202. At the same time, the left slider 204 slides on the support column 206 to play a guiding and stabilizing role. The movement of the slider 204 drives the connecting plate 205 to move, and the connecting plate 205 is fixedly connected to the bottom of the backrest 3, so that the backrest 3 can move smoothly back and forth on the seat cushion 1 to achieve position adjustment.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An office chair with lumbar support, comprising a seat cushion (1), characterized in that: The left and right sides of the outer wall of the seat cushion (1) are fixedly connected with baffles (11); the rear side of the seat cushion (1) is provided with a backrest (3); the front side of the backrest (3) is provided with a lumbar pad (4); the front side of the backrest (3) is provided with a slide groove (9); the inner side of the slide groove (9) is slidably connected with a connecting column (8); the front side of the connecting column (8) is fixedly connected to the rear side of the lumbar pad (4); the outer wall of the connecting column (8) is slidably connected with a transmission plate (7); the inner side of the backrest (3) is fixedly connected with a servo motor (5); the output end of the servo motor (5) is fixedly connected with a rotating shaft (6); the outer wall of the rotating shaft (6) is fixedly connected to the right side of the transmission plate (7); the outer wall of the baffle (11) is fixedly connected with a controller (13); and a moving mechanism (2) is provided at the bottom of the backrest (3); the moving mechanism (2) is used to adjust the position of the backrest (3) on the seat cushion (1).

2. The office chair with lumbar support according to claim 1, characterized in that: The moving mechanism (2) comprises a connecting plate (205), the outer wall of which is fixedly connected to the bottom of the backrest (3), and sliders (204) are fixedly connected to both ends of the connecting plate (205), the inner side of the left slider (204) is slidably connected to a support column (206), and the inner side of the right slider (204) is slidably connected to a screw rod (202), and the rear end of the screw rod (202) is fixedly connected to a rotating wheel (203), and grooves (201) are provided on adjacent sides of the two baffles (11), and the support column (206) and the screw rod (202) are arranged on the inner side of the corresponding grooves (201).

3. The office chair with lumbar support according to claim 1, characterized in that: The tops of the two baffles (11) are fixedly connected to the handrails (12), and the outer walls of the handrails (12) are rounded.

4. The office chair with lumbar support according to claim 1, characterized in that: The bottom of the seat cushion (1) is fixedly connected to a telescopic column (14), and the bottom of the telescopic column (14) is fixedly connected to a support column (15).

5. The office chair with lumbar support according to claim 4, characterized in that: The bottoms of the pillars (15) are fixedly connected to a plurality of wheels (16), and the outer wall of the telescopic column (14) is provided with a handle (17).

6. The office chair with lumbar support according to claim 1, characterized in that: A heat dissipation hole (10) is provided on the rear side of the backrest (3), and the heat dissipation hole (10) is arranged on the outer wall of the servo motor (5).

7. The office chair with lumbar support according to claim 2, characterized in that: The outer wall of the rotating wheel (203) is provided with anti-skid grooves (18), and the outer wall of the rotating wheel (203) is made of rubber material.

8. The office chair with lumbar support according to claim 1, characterized in that: The bottom of the backrest (3) is slidably connected to the top of the seat cushion (1).

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