Office chair with adjustable waist support

Abstract

The utility model relates to the technical field of office chairs, and discloses a waist support adjustable office chair which comprises a chair back and a chair seat, a back cushion is arranged in the chair back, a limiting piece is arranged on one side of the outer wall of the back cushion, a locking knob is clamped in a sliding groove in the limiting piece in a sliding mode, and a locking piece is arranged on the outer wall of the locking knob in a sleeved mode. The locking knob is in threaded connection with a waist supporting block, one side of the waist supporting block is rotationally connected with a meshing sleeve, a threaded rod is arranged in the meshing sleeve in a threaded sleeving mode, the upper end of the threaded rod is fixedly connected with a height limiting block, and a first bevel gear is arranged at the lower end of the threaded rod and is in meshed connection with a second bevel gear. According to the waist supporting device, the waist supporting block is driven to move up and down through rotation of the second bevel gear, the angle of the waist supporting block is adjusted through the first rotary knob, the waist supporting block is locked through the second rotary knob, stability is improved, and the requirements of users can be effectively met.

Description

Technical Field

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

[0002] Office chairs are an important component of office furniture. Their main function is to provide people with a comfortable sitting posture and support while working, reduce fatigue caused by work, and improve work efficiency. With the development of the economy and the continuous improvement of the office environment, people's requirements for higher comfort at work are also constantly increasing.

[0003] Currently, some office chairs on the market are equipped with lumbar supports to improve user comfort. However, users will frequently adjust their sitting posture to find a sitting posture that suits them. However, the position of the lumbar support remains unchanged, so some users may not get a good user experience. There are limitations in use, and it is difficult to meet usage needs.

[0004] Therefore, those skilled in the art provide an office chair with adjustable lumbar support to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present utility model is to solve the shortcomings of the prior art and to propose an office chair with adjustable lumbar support. The office chair is provided with an adjustable lumbar support structure, which can allow the user to achieve a satisfactory sitting posture. In addition, a vibration timer is provided to remind the user that sitting for a long time affects health, so that the user can maintain good habits.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An office chair with adjustable lumbar support comprises a backrest and a seat, a back cushion being provided inside the backrest, a limit piece being provided on one side of the outer wall of the back cushion, a locking knob being slidably engaged inside the slide groove on the limit piece, a locking sheet being provided on the outer wall of the locking knob, a lumbar support block being threadedly connected to the locking knob, an engaging sleeve being rotatably connected to one side of the lumbar support block, a threaded rod being provided on the inner threaded sleeve of the engaging sleeve, a height limit block being fixedly connected to the upper end of the threaded rod, a first bevel gear being provided at the lower end of the threaded rod, the first bevel gear being meshedly connected to the second bevel gear, and a handle being provided on the outer side of the second bevel gear.

[0008] Through the above technical solution, the office chair is provided with an adjustable lumbar support. The height and angle of the lumbar support can be adjusted by the knobs on the left and right sides, which can better meet the needs of the user.

[0009] Furthermore, a support frame is provided at the lower end of the seat, a gas pressure rod is fixedly connected to the upper end of the support frame, a height adjustment handle is provided at the upper end of the gas pressure rod, one end of the height adjustment handle is fixedly connected to a storage box, an adjustment rod is slidably provided inside the storage box, one end of the adjustment rod is fixedly connected to two support rods, and one end of the two support rods is fixedly connected to a footrest;

[0010] Through the above technical solution, a storage box is fixedly connected under the seat, a footrest is provided inside the storage box, and the footrest is provided with an adjustment rod, which can be retracted or pulled out to provide better conditions for the user to rest.

[0011] Furthermore, according to the office chair with adjustable lumbar support according to claim, a seat cushion is provided on the upper end surface of the seat, a vibration timing device is provided inside the seat cushion, a plurality of flexible pressure sensors, a processor, a plurality of vibration motors and a battery are provided inside the vibration timing device, a display screen is provided on the side wall of the seat cushion, the processor is electrically connected to the flexible pressure sensor, the vibration motor and the display screen, and the battery is electrically connected to the flexible pressure sensor, the processor, the vibration motor and the display screen;

[0012] Through the above technical solution, a vibration timer is set inside the upper end of the seat. The user can adjust the time by himself. The vibration can remind the user to get up and move around, avoiding the user from sitting for a long time, effectively protecting the user to maintain good habits and avoid affecting health.

[0013] Furthermore, both sides of the lower end of the seat are fixedly connected to armrest brackets, and the upper ends of the two armrest brackets are fixedly connected to armrests;

[0014] Through the above technical solution, the armrests provide support for the arms, helping to reduce fatigue caused by long-term work.

[0015] Furthermore, one side of the upper end of the armrest is fixedly connected to a hinge, and one end of the hinge is fixedly connected to an armrest cover;

[0016] Through the above technical solution, the storage space is increased, and users can store documents or personal belongings more conveniently, further avoiding the desktop from being dirty and affecting their mood.

[0017] Furthermore, a telescopic rod is fixedly connected to the middle of the upper end of the chair back, and a headrest is fixedly connected to the upper end of the telescopic rod;

[0018] Through the above technical solution, users can adjust the height according to their own conditions to increase comfort.

[0019] Furthermore, the support frame is provided with universal wheels at all four ends.

[0020] Through the above technical solution, the mobility and usability of the office chair are improved.

[0021] Furthermore, a chair back connecting frame is fixedly connected to the middle of the lower end of the chair back, and the middle of one end of the chair back connecting frame is fixedly connected to the rear end of the seat;

[0022] Through the above technical solution, the stability of the overall structure of the chair is ensured and the comfort is increased.

[0023] The utility model has the following beneficial effects:

[0024] 1. The utility model proposes an office chair with adjustable lumbar support. The office chair is provided with an adjustable lumbar support. The height and angle of the lumbar support can be adjusted by the knobs on the left and right sides to better meet the needs of the user. A storage box is fixedly connected under the seat, and a footrest is provided inside the storage box. The footrest is provided with an adjustment rod, which can be retracted or pulled out to provide better conditions for the user to rest. A gas rod is fixedly connected to the lower end of the storage box, and a height adjustment handle is provided on one side of the upper end of the gas rod. The user can adjust the height by himself to achieve a satisfactory height. A telescopic rod is fixedly connected to the upper end of the chair back, and a headrest is fixedly connected to the upper end of the telescopic rod. The user can adjust the height according to his own conditions to increase the comfort of use.

[0025] 2. The utility model proposes an office chair with adjustable lumbar support. A back cushion is provided inside the upper end of the armrest. One side of the inner side of the armrest is fixedly connected to a hinge, and one end of the hinge is fixedly connected to the armrest cover, thereby increasing the storage space. The user can store documents or personal belongings more conveniently and further avoid a messy desk that affects the mood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an axonometric drawing of an office chair with adjustable lumbar support proposed in the present invention;

[0027] Figure 2 This is a side sectional view of an office chair with adjustable lumbar support proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the lumbar support structure of an office chair with adjustable lumbar support proposed by the present invention;

[0029] Figure 4 This is a side view of an office chair with adjustable lumbar support proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the armrest structure of an office chair with adjustable lumbar support proposed by the present invention;

[0031] Figure 6This is a schematic diagram of the structure of a vibration timer for an office chair with adjustable lumbar support proposed by the present invention;

[0032] Figure 7 This is a schematic diagram of the storage box structure of an office chair with adjustable lumbar support proposed by the present invention.

[0033] Legend:

[0034] 1. Chair back; 101. Back cushion; 102. Limiting piece; 103. Locking plate; 104. Locking knob; 105. First bevel gear; 106. Second bevel gear; 107. Lumbar support block; 108. Engaging sleeve; 109. Threaded rod; 110. Height limit block; 111. Telescopic rod; 112. Headrest; 113. Chair back connecting frame; 114. Handle; 2. Seat; 201. Universal wheel; 202. Support Frame; 203, pneumatic rod; 204, storage box; 205, adjustment rod; 206, height adjustment handle; 207, support rod; 208, footrest; 209, seat cushion; 210, armrest bracket; 211, armrest; 212, hinge; 213, armrest cover; 214, flexible pressure sensor; 215, vibration motor; 216, display; 217, processor; 218, battery; 219, vibration timing device. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the specific embodiments of the present invention to clearly and completely describe the technical solutions in the specific embodiments of the present invention. Obviously, the specific embodiments described are only part of the specific embodiments of the present invention, not all of the specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Reference Figure 1-4 , a specific implementation method provided by the utility model:

[0037] The lumbar support of the office chair is adjustable, comprising a chair back 1 and a chair seat 2. A back cushion 101 is provided inside the chair back 1, and a limit member 102 is provided on one side of the outer wall of the back cushion 101. A locking knob 104 is slidably engaged with the slide groove on the limit member 102, and a locking piece 103 is sleeved on the outer wall of the locking knob 104. A lumbar support block 107 is threadedly connected to the locking knob 104, and an engaging sleeve 108 is rotatably connected to one side of the lumbar support block 107. A threaded sleeve 108 is sleeved on the inner thread of the engaging sleeve 108, and a threaded rod 109 is fixedly connected to the upper end of the threaded rod 109. A first bevel gear 105 is provided at the lower end of the threaded rod 109, and the first bevel gear 105 is meshed with the second bevel gear 106. A handle 114 is provided on the outer side of the second bevel gear 106. The height and angle of the lumbar support can be adjusted respectively by turning the right handle and the left knob, which can better meet the needs of the user.

[0038] A support frame 202 is provided at the lower end of the seat 2, and a pneumatic rod 203 is fixedly connected to the upper end of the support frame 202. A height adjustment handle 206 is provided at the upper end of the pneumatic rod 203. One end of the height adjustment handle 206 is fixedly connected to a storage box 204. An adjustment rod 205 is slidingly provided inside the storage box 204. One end of the adjustment rod 205 is fixedly connected to two support rods 207. One end of the two support rods 207 is fixedly connected to a foot pedal 208, which can be retracted or pulled out to provide better conditions for the user to rest. The user can adjust the time by himself.

[0039] The upper end surface of the seat 2 is provided with a cushion 209, and a vibration timing device 219 is provided inside the cushion 209. The vibration timing device 219 is provided with multiple flexible pressure sensors 214, a processor 217, multiple vibration motors 215 and a battery 218. The side wall of the cushion 209 is provided with a display screen 216. The processor 217 is electrically connected to the flexible pressure sensor 214, the vibration motor 215 and the display screen 216. The battery 218 is electrically connected to the flexible pressure sensor 214, the processor 217, the vibration motor 215 and the display screen 216. The user can adjust the time by himself, and the vibration can be used to remind the user to get up and move around, so as to avoid the user sitting for a long time, effectively protecting the user from maintaining good habits and avoiding affecting health.

[0040] Reference Figure 4-7 The lower ends of the seat 2 are fixedly connected to armrest brackets 210 on both sides, and the upper ends of the two armrest brackets 210 are fixedly connected to armrests 211. The armrests 211 provide support for the arms and help reduce fatigue caused by long-term work.

[0041] One side of the upper end of the armrest 211 is fixedly connected to the hinge 212, and one end of the hinge 212 is fixedly connected to the armrest cover 213, which increases the storage space. The user can store documents or personal belongings more conveniently and further avoid the desktop from being dirty and affecting the mood.

[0042] A telescopic rod 111 is fixedly connected to the middle of the upper end of the chair back 1, and a headrest 112 is fixedly connected to the upper end of the telescopic rod 111. The user can adjust the height according to his or her own conditions to increase the comfort of use.

[0043] Universal wheels 201 are provided at the four ends of the support frame 202 to improve the mobility and usability of the office chair.

[0044] The middle part of the lower end of the chair back 1 is fixedly connected to a chair back connecting frame 113, and the middle part of one end of the chair back connecting frame 113 is fixedly connected to the rear end of the seat 2 to ensure the stability of the overall structure of the chair and increase comfort.

[0045] Working principle: When the office chair with adjustable lumbar support is used, first, a second bevel gear 106 is provided at the lower end of one side of the chair back 2. The second bevel gear 106 is driven by manually rotating the handle 114, and the second bevel gear 106 drives the first bevel gear 105. The first bevel gear 105 drives the threaded rod 109, and the threaded rod drives the engagement sleeve 108. The engagement sleeve 108 rotates and connects to the lumbar support block 107 to adjust the height up and down. In addition, the lumbar support block 107 is fixed by rotating the locking knob 104 to increase stability. Secondly, move the adjustment rod 205 to pull out the footrest 208 to provide a comfortable posture for the user when resting, and then the vibration interval can be adjusted from the side display screen 216 to remind the user to get up and move around to avoid sitting for a long time. One side of the upper end of the armrest 211 is fixedly connected to the hinge 212, and one end of the hinge 212 is fixedly connected to the armrest cover 213, which can store personal belongings. Then the upper end of the chair back 1 is fixedly connected to the telescopic rod 111, and the upper end of the telescopic rod 111 is fixedly connected to the headrest 112 to adjust the comfortable position according to the user's posture.

[0046] Finally, it should be noted that the above is only a preferred specific implementation method 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 specific implementation methods, those skilled in the art can still modify the technical solutions described in the aforementioned specific implementation methods or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An office chair with adjustable lumbar support, comprising a backrest (1) and a seat (2), characterized in that: The backrest (1) is provided with a back cushion (101) inside, and a limiting member (102) is provided on one side of the outer wall of the back cushion (101), and a locking knob (104) is slidably engaged with the inner groove of the limiting member (102), and a locking plate (103) is provided on the outer wall of the locking knob (104), and a lumbar support block (107) is threadedly connected to the locking knob (104), and a meshing sleeve (108) is rotatably connected to one side of the lumbar support block (107), and a threaded rod (109) is provided on the inner thread of the meshing sleeve (108), and a height limiting block (110) is fixedly connected to the upper end of the threaded rod (109), and a first bevel gear (105) is provided at the lower end of the threaded rod (109), and the first bevel gear (105) is meshedly connected to the second bevel gear (106), and a handle (114) is provided on the outer side of the second bevel gear (106).

2. The office chair with adjustable lumbar support according to claim 1, characterized in that: The lower end of the seat (2) is provided with a support frame (202), the upper end of the support frame (202) is fixedly connected to a pneumatic rod (203), the upper end of the pneumatic rod (203) is provided with a height adjustment handle (206), one end of the height adjustment handle (206) is fixedly connected to a storage box (204), an adjustment rod (205) is slidably provided inside the storage box (204), one end of the adjustment rod (205) is fixedly connected to two support rods (207), and one end of the two support rods (207) is fixedly connected to a footrest (208).

3. The office chair with adjustable lumbar support according to claim 1, characterized in that: The upper end surface of the seat (2) is provided with a seat cushion (209), a vibration timing device (219) is provided inside the seat cushion (209), a plurality of flexible pressure sensors (214), a processor (217), a plurality of vibration motors (215) and a battery (218) are provided inside the vibration timing device (219), a side wall of the seat cushion (209) is provided with a display screen (216), the processor (217) is electrically connected to the flexible pressure sensor (214), the vibration motor (215) and the display screen (216), and the battery (218) is electrically connected to the flexible pressure sensor (214), the processor (217), the vibration motor (215) and the display screen (216).

4. The office chair with adjustable lumbar support according to claim 1, characterized in that: Both sides of the lower end of the seat (2) are fixedly connected to armrest brackets (210), and the upper ends of the two armrest brackets (210) are fixedly connected to armrests (211).

5. The office chair with adjustable lumbar support according to claim 4, characterized in that: One side of the upper end of the handrail (211) is fixedly connected to a hinge (212), and one end of the hinge (212) is fixedly connected to an handrail cover (213).

6. The office chair with adjustable lumbar support according to claim 1, characterized in that: A telescopic rod (111) is fixedly connected to the middle of the upper end of the chair back (1), and a headrest (112) is fixedly connected to the upper end of the telescopic rod (111).

7. The office chair with adjustable lumbar support according to claim 2, characterized in that: Universal wheels (201) are provided at the four ends of the support frame (202).

8. The office chair with adjustable lumbar support according to claim 1, characterized in that: A backrest connecting frame (113) is fixedly connected to the middle portion of the lower end of the chair back (1), and a middle portion of one end of the backrest connecting frame (113) is fixedly connected to the rear end of the seat (2).

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