Ergonomic office chair with adjustable backrest

Abstract

The ergonomic office chair comprises a supporting frame, the upper end of the supporting frame is fixedly connected with an air rod, the upper end of the air rod is fixedly connected with a cushion, the lower end of the cushion is fixedly connected with an adjuster, one side of the adjuster is fixedly connected with a mounting shell, and the other side of the adjuster is fixedly connected with a backrest. A worm gear is rotatably connected to the interior of the mounting shell, a worm is rotatably connected to the interior of the mounting shell, a rotating rod is fixedly connected to one side of the worm gear, a connecting rod is fixedly connected to one side of the rotating rod, a backrest is fixedly connected to one side of the connecting rod, and a mounting groove is formed in one side of the backrest; and a transmission motor is fixedly connected to the interior of the mounting groove. By arranging the mounting groove, the transmission motor, the threaded rod and the threaded block, the waist rest is driven to be adjusted, users of different heights can conveniently use the device, the waist of the user is supported and protected, the spine of the user is effectively supported, and the problem of waist fatigue is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an ergonomic office chair with an adjustable backrest. Background Art

[0002] Office chairs are indispensable office supplies in daily office life, and their comfort level is directly related to people's office efficiency. The office chairs currently on the market have seat backs, especially lumbar supports, that cannot be adjusted, which is inconvenient for some users. The lumbar support is separated from the human waist, and the two are suspended in the air, causing the chair to lose its support and protection for the human waist. The human spine cannot be effectively supported, leading to many problems of waist fatigue caused by sitting for a long time. Utility Model Content

[0003] The purpose of the utility model is to provide an ergonomic office chair with an adjustable backrest, which can drive the lumbar support to be adjusted through an installation slot, a transmission motor, a threaded rod, and a threaded block, so as to be convenient for users of different heights to use, support and protect the user's waist, effectively support the user's spine, and reduce the problem of waist fatigue.

[0004] To achieve the above-mentioned object, an ergonomic office chair with an adjustable backrest is provided, comprising a support frame, wherein the upper end of the support frame is fixedly connected to a gas rod, the upper end of the gas rod is fixedly connected to a seat cushion, the lower end of the seat cushion is fixedly connected to an adjuster, one side of the adjuster is fixedly connected to a mounting shell, the interior of the mounting shell is rotatably connected to a worm gear, the interior of the mounting shell is rotatably connected to a worm, one side of the worm gear is fixedly connected to a rotating rod, one side of the rotating rod is fixedly connected to a connecting rod, and one side of the connecting rod is fixedly connected to a backrest;

[0005] A mounting groove is provided on one side of the backrest, a transmission motor is fixedly connected to the interior of the mounting groove, an output shaft of the transmission motor is fixedly connected to a threaded rod, an outer surface of the threaded rod is threadedly connected to a threaded block, and a lumbar support is fixedly connected to one side of the threaded block.

[0006] According to the ergonomic office chair with an adjustable backrest, the worm wheel is meshed with the worm.

[0007] According to the ergonomic office chair with an adjustable backrest, the worm screw passes through the mounting shell, and a rotating handle is fixedly connected to one side of the worm screw.

[0008] According to the ergonomic office chair with an adjustable backrest, the rotating rod is located inside the adjuster.

[0009] According to the ergonomic office chair with an adjustable backrest, an adjustment opening is provided on one side of the adjuster, and the connecting rod passes through the adjustment opening.

[0010] According to the ergonomic office chair with an adjustable backrest, the upper end of the mounting shell and one side of the adjuster are both fixedly connected with an armrest.

[0011] According to the ergonomic office chair with an adjustable backrest, the lower end of the threaded rod is fixedly connected to a bearing, and the bearing is fixed to the bottom wall of the mounting groove.

[0012] According to the ergonomic office chair with an adjustable backrest, one side of the threaded block is slidably connected to the side wall of the mounting groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This ergonomic office chair with an adjustable backrest is equipped with a mounting slot, a transmission motor, a threaded rod, and a threaded block to drive the lumbar support to be adjusted, which is convenient for users of different heights to use, supports and protects the user's waist, effectively supports the user's spine, and reduces the problem of waist fatigue.

[0015] 2. The ergonomic office chair with an adjustable backrest can conveniently adjust the angle between the backrest and the seat cushion by arranging an adjuster, a mounting shell, a worm gear, a worm, a rotating rod, a connecting rod, and a rotating handle.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional diagram of an ergonomic office chair with an adjustable backrest according to the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembly of the mounting shell of an ergonomic office chair with an adjustable backrest according to the present invention;

[0020] Figure 3 This is a cross-sectional view of the backrest of an ergonomic office chair with an adjustable backrest according to the present invention;

[0021] Figure 4 For the utility model Figure 3 An enlarged schematic diagram of the structure at A in the middle.

[0022] In the figure: 1, support frame; 2, gas rod; 3, cushion; 4, adjuster; 5, mounting shell; 6, worm wheel; 7, worm; 8, rotating handle; 9, rotating rod; 10, connecting rod; 11, backrest; 12, adjusting opening; 13, armrest; 14, mounting slot; 15, transmission motor; 16, threaded rod; 17, threaded block; 18, bearing; 19, lumbar support. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] Please refer to Figure 1-4 The utility model embodiment provides a kind of technical scheme: a kind of ergonomic office chair with adjustable backrest, including support frame 1, the upper end of support frame 1 is fixedly connected with gas rod 2, the upper end of gas rod 2 is fixedly connected with cushion 3, the lower end of cushion 3 is fixedly connected with adjuster 4, the side of adjuster 4 is fixedly connected with mounting shell 5, the inside of mounting shell 5 is rotatably connected with worm wheel 6, the inside of mounting shell 5 is rotatably connected with worm 7, the side of worm wheel 6 is fixedly connected with rotating rod 9, the side of rotating rod 9 is fixedly connected with connecting rod 10, the side of connecting rod 10 is fixedly connected with backrest 11, by being provided with adjuster 4, mounting shell 5, worm wheel 6, worm 7, rotating rod 9, connecting rod 10, rotating handle 8, rotating handle 8 drives worm 7 to rotate, worm 7 drives worm wheel 6 to rotate, worm wheel 6 drives rotating rod 9 to rotate, rotating rod 9 drives connecting rod 10 to rotate, connecting rod 10 drives backrest 11 to rotate, it is convenient to adjust the angle between backrest 11 and cushion 3, simultaneously by the self-locking of worm wheel 6 and worm 7, when worm 7 does not rotate, backrest 11 cannot rotate;

[0025] The side of backrest 11 is provided with mounting slot 14, the inside of mounting slot 14 is fixedly connected with transmission motor 15, the output shaft of transmission motor 15 is fixedly connected with threaded rod 16, the outer surface of threaded rod 16 is threadedly connected with threaded block 17, the side of threaded block 17 is fixedly connected with lumbar support 19, the inside of backrest 11 is provided with battery (not shown in the figure), by being provided with mounting slot 14, transmission motor 15, threaded rod 16, threaded block 17, transmission motor 15 drives threaded rod 16 to rotate, threaded rod 16 drives threaded block 17 to move, threaded block 17 drives lumbar support 19 to move, it is convenient for different height users to use, and the user's waist is supported and protected, and the user's spine is effectively supported, reducing the problem of waist fatigue.

[0026] The worm wheel 6 is meshed with the worm 7, and the worm 7 passes through the mounting shell 5. A rotating handle 8 is fixedly connected to one side of the worm 7. By setting the rotating handle 8, the worm 7 can be easily driven to rotate. The rotating rod 9 is located inside the adjuster 4. An adjusting opening 12 is provided on one side of the adjuster 4. The connecting rod 10 passes through the adjusting opening 12. The adjusting opening 12 is provided to facilitate the rotation of the connecting rod 10. The upper end of the mounting shell 5 and one side of the adjuster 4 are fixedly connected with an armrest 13. The lower end of the threaded rod 16 is fixedly connected with a bearing 18. The bearing 18 is fixed to the bottom wall of the mounting groove 14. The bearing 18 is provided to facilitate the rotation of the threaded rod 16. One side of the threaded block 17 is slidably connected to the side wall of the mounting groove 14. By providing a threaded block 17 that is slidably connected to the side wall of the mounting groove 14, the threaded block 17 is prevented from rotating with the rotation of the threaded rod 16.

[0027] Working principle: When the backrest 11 needs to be adjusted, turn the rotating handle 8, the rotating handle 8 drives the worm 7 to rotate, the worm 7 drives the worm wheel 6 to rotate, the worm wheel 6 drives the rotating rod 9 to rotate, the rotating rod 9 drives the connecting rod 10 to rotate, and the connecting rod 10 drives the backrest 11 to rotate, and then adjust the backrest 11 to a suitable angle; the transmission motor 15 is powered by the battery, the transmission motor 15 drives the threaded rod 16 to rotate, the threaded rod 16 drives the threaded block 17 to move, and the threaded block 17 drives the lumbar support 19 to move, and then adjust the position of the lumbar support 19 to be convenient for users.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An ergonomic office chair with an adjustable backrest, comprising a support frame (1), characterized in that: The upper end of the support frame (1) is fixedly connected to a gas rod (2), the upper end of the gas rod (2) is fixedly connected to a seat cushion (3), the lower end of the seat cushion (3) is fixedly connected to an adjuster (4), one side of the adjuster (4) is fixedly connected to a mounting shell (5), the interior of the mounting shell (5) is rotatably connected to a worm gear (6), the interior of the mounting shell (5) is rotatably connected to a worm gear (7), one side of the worm gear (6) is fixedly connected to a rotating rod (9), one side of the rotating rod (9) is fixedly connected to a connecting rod (10), and one side of the connecting rod (10) is fixedly connected to a backrest (11); A mounting groove (14) is provided on one side of the backrest (11), a transmission motor (15) is fixedly connected to the interior of the mounting groove (14), an output shaft of the transmission motor (15) is fixedly connected to a threaded rod (16), an outer surface of the threaded rod (16) is threadedly connected to a threaded block (17), and a lumbar support (19) is fixedly connected to one side of the threaded block (17).

2. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: The worm wheel (6) is meshed with the worm (7).

3. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: The worm (7) passes through the mounting housing (5), and a rotating handle (8) is fixedly connected to one side of the worm (7).

4. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: The rotating rod (9) is located inside the regulator (4).

5. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: An adjustment opening (12) is provided on one side of the adjuster (4), and the connecting rod (10) passes through the adjustment opening (12).

6. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: The upper end of the mounting shell (5) and one side of the regulator (4) are both fixedly connected with an armrest (13).

7. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: The lower end of the threaded rod (16) is fixedly connected to a bearing (18), and the bearing (18) is fixed to the bottom wall of the mounting groove (14).

8. The ergonomic office chair with an adjustable backrest according to claim 1, characterized in that: One side of the threaded block (17) is slidably connected to the side wall of the mounting groove (14).

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