Office chair with waist supporting and adjusting function
By designing an office chair with lumbar support adjustment function and utilizing an adjustment mechanism to achieve flexible adjustment of the lumbar support, the problem of insufficient lumbar support in existing office chairs is solved, and user comfort and adaptability are improved.
Patent Information
- Application Number
- CN202423076386.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing office chairs do not provide adequate lumbar support, which can easily cause waist fatigue in users after prolonged use. In addition, the lumbar support position cannot be adjusted, making it impossible to adapt to the needs of different users.
An office chair with lumbar support adjustment function is designed. The front-back and up-down adjustment of the lumbar support is achieved through an adjustment mechanism. The adjustment mechanism includes a mounting plate, a first adjustment screw, a compression spring, an adjustment plate, an adjustment block, and a second adjustment screw. The position of the lumbar support is adjusted by threaded engagement and a screwing portion.
The lumbar support can be flexibly adjusted to meet the lumbar support needs of different users, relieve lumbar pressure, and improve comfort and adaptability.
Smart Images
Figure CN223349863U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to office chairs, and in particular to an office chair with a waist support and adjustment function. Background Art
[0002] Existing office chairs lack adequate lumbar support, which can easily lead to lumbar fatigue and even lumbar spine problems after prolonged use. Furthermore, the lumbar support position in existing office chairs cannot be adjusted, making them inadequate for the lumbar support needs of different users. Therefore, designing an office chair with flexible lumbar support that effectively relieves lumbar pressure has become an urgent technical challenge. Utility Model Content
[0003] In order to overcome the existing technical defects, the purpose of the present invention is to provide an office chair with a lumbar support adjustment function to solve the above technical problems.
[0004] The technical solutions adopted by the present invention to solve the technical problems are as follows:
[0005] The adjustable seat is adapted to adjust the height of the seat and the backrest so that the seat can be adjusted to a desired position.
[0006] When the adjusting nut is turned counterclockwise, the compression spring can drive the mounting plate and the lumbar support to move toward the front of the backrest, thereby realizing the front and rear adjustment of the lumbar support; when the screw part is turned clockwise, the second adjusting screw can be driven to rotate, and the second adjusting screw can drive the adjusting block and the adjusting plate to move upward in the length direction of the backrest, and the adjustment plate moves up to drive the mounting plate and the backrest to move upward (the adjusting nut can be loosened first when the screw part is turned, which is conducive to smooth adjustment). When the screw part is turned counterclockwise, the mounting plate and the lumbar support can be driven downward to realize the height adjustment of the lumbar support. In this way, the lumbar support can be adjusted front and back and up and down. The user can adjust the position of the lumbar support as needed, so that the lumbar support can achieve a better lumbar support effect and meet the lumbar support needs of different users, with good practical effect.
[0007] In order to better solve the above technical defects, the present invention also has a better technical solution:
[0008] In some embodiments, the adjustment plate is slidably engaged with the backrest via a guide rail and a slider.
[0009] In some embodiments, at least two first adjusting screws are fixedly connected to the rear side of the mounting plate, and a compression spring is sleeved on each of the first adjusting screws.
[0010] In some embodiments, the screwing portion is a hexagonal screw head or a frustum, and a hexagonal groove is provided on the frustum.
[0011] In some embodiments, four first adjusting screws are fixedly connected to the rear side of the mounting plate, and a compression spring is sleeved on each of the first adjusting screws.
[0012] In some embodiments, a locking nut is provided below the fixing block and is threadably engaged with the second adjusting screw. When the lumbar support is adjusted to a higher height, the second adjusting screw can be locked by screwing the locking nut into contact with the fixing block to prevent rotation.
[0013] In some embodiments, a telescopic movable bracket is connected to the bottom of the seat.
[0014] In some embodiments, armrests are respectively connected to both sides of the seat.
[0015] In some embodiments, the invention further comprises a wrapping member made of cloth and having an opening, wherein the wrapping member wraps around the peripheral edge of the waist support member and the adjustment plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1This is a schematic structural diagram of an office chair with lumbar support adjustment function according to an embodiment of the present invention;
[0017] Figure 2 for Figure 1 Structural diagram from another perspective;
[0018] Figure 3 A schematic diagram of the partial structure of an office chair with lumbar support adjustment function;
[0019] Figure 4 Schematic diagram of the exploded structure of an office chair with lumbar support adjustment function;
[0020] Figure 5 for Figure 4 Structural diagram from another perspective;
[0021] Reference numerals:
[0022] 1. Seat; 11. Armrest; 2. Backrest; 21. First strip hole; 22. Second strip hole; 23. Fixing block; 3. Lumbar support; 4. Telescopic movable bracket; 5. Adjustment mechanism; 51. Mounting plate; 52. First adjusting screw; 53. Adjustment plate; 531. Through hole; 54. Compression spring; 55. Adjustment block; 56. Second adjusting screw; 561. Screw portion; 57. Adjustment nut; 58. Locking nut; 6. Guide rail; 7. Slider. DETAILED DESCRIPTION
[0023] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.
[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, and fixing should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0026] refer to Figures 1 to 5As shown, the utility model provides an office chair with lumbar support adjustment function, comprising: a seat 1, a backrest 2 and a lumbar support 3, armrests 11 are connected to both sides of the seat 1, a telescopic movable bracket 4 is connected to the bottom of the seat 1, the telescopic movable bracket 4 comprises a lifting chair air pressure pump, a plurality of support legs connected to the lower end of the lifting chair air pressure pump and a universal roller installed at the end of the support leg, the backrest 2 is connected to the seat 1, the lumbar support 3 is arranged on the front side of the backrest 2, the lumbar support 3 is a sponge with an arc-shaped surface on the front side or a plastic part that is arc-shaped when viewed from the side, etc., an adjustment mechanism 5 for adjusting the height and front and rear position of the lumbar support 3 is provided on the backrest 2, the adjustment mechanism 5 comprises: a mounting plate 51 mounted on the rear side of the lumbar support 3, a first adjusting screw 52 fixed to the rear side of the mounting plate 51, an adjustment plate 53 provided between the mounting plate 51 and the backrest 2, a sleeve on the first adjusting screw 52 and connected to the mounting plate 51 and the adjustment The compression spring 54 abutted against the section plate 53, the adjustment block 55 fixed to the rear side of the adjustment plate 53, and the second adjustment screw 56 provided on the rear side of the backrest 2. The compression spring 54 is in a compressed state. The rear end of the first adjustment screw 52 passes through the through hole 531 on the adjustment plate 53 and the first strip hole 21 on the backrest 2 and is threadedly engaged with the adjustment nut 57. The rear end of the adjustment block 55 passes through the second strip hole 22 on the backrest 2 and extends to the rear side. The upper end of the second adjustment screw 56 is rotatably engaged with the fixed block 23 fixed to the rear side of the backrest 2. The top of the second adjustment screw 56 has a screwing portion 561, which is a hexagonal screw head or a frustum. When the screwing portion 561 is a frustum, a hexagonal groove is provided on the frustum. In this embodiment, the screwing portion 561 is preferably a hexagonal screw head. The lower end of the second adjustment screw 56 is threadedly engaged with the threaded hole on the adjustment block 55. A locking nut 58 threadedly engaged with the second adjustment screw 56 is provided below the fixed block 23.
[0027] The adjustment plate 53 is in sliding cooperation with the backrest 2 through the guide rail 6 and the slider 7, wherein two groups of guide rails 6 and sliders 7 are provided, the guide rail 6 is fixed to the backrest 2, the slider 7 is fixed to the adjustment plate 53, and the guide rail 6 and the slider 7 are in sliding cooperation.
[0028] Furthermore, two, three, four or more first adjusting screws 52 are fixedly connected to the rear side of the mounting plate 51. In this embodiment, four first adjusting screws 52 are preferably fixedly connected to the rear side of the mounting plate 51, and each first adjusting screw 52 is respectively provided with a compression spring 54.
[0029] In some embodiments, the invention further comprises a wrapping piece made of cloth and having an opening, wherein the wrapping piece wraps around the peripheral edge of the waist support piece and the adjustment plate.
[0030] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.
Claims
1. An office chair with lumbar support adjustment function, characterized in that: include: The adjusting screw threadedly engages with the adjusting base and the adjusting base, and the adjusting screw threadedly engages with the adjusting base and the adjusting base, and the adjusting screw threadedly engages with the adjusting base and the adjusting base.
2. The office chair with lumbar support adjustment function according to claim 1, characterized in that: The adjustment plate is slidably matched with the backrest through a guide rail and a slider.
3. The office chair with lumbar support adjustment function according to claim 1, characterized in that: At least two of the first adjusting screws are fixedly connected to the rear side of the mounting plate, and a compression spring is sleeved on each of the first adjusting screws.
4. The office chair with lumbar support adjustment function according to claim 1, characterized in that: The screwing portion is a hexagonal screw head or a frustum, and a hexagonal groove is provided on the frustum.
5. The office chair with lumbar support adjustment function according to claim 1, characterized in that: The rear side of the mounting plate is fixedly connected to four first adjusting screws, and each of the first adjusting screws is sleeved with a compression spring.
6. The office chair with lumbar support adjustment function according to claim 1, characterized in that: A locking nut threadably matched with the second adjusting screw is provided below the fixing block.
7. The office chair with lumbar support adjustment function according to claim 1, characterized in that: The bottom of the seat is connected with a telescopic movable bracket.
8. The office chair with lumbar support adjustment function according to claim 1, characterized in that: Both sides of the seat are respectively connected with armrests.
9. The office chair with lumbar support adjustment function according to claim 1, characterized in that: The invention also comprises a wrapping piece made of cloth and having an opening, wherein the wrapping piece wraps the peripheral edge of the waist supporting piece and the adjusting plate.