Adjustable office chair with double waist rests
By designing the adjustable components and worm gear mechanism of the adjustable double lumbar support office chair, the problem that traditional lumbar supports cannot adapt to the lumbar curves of different people has been solved, thereby improving the lumbar support effect and reducing displacement.
Patent Information
- Application Number
- CN202520414803.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional single lumbar supports and fixed double lumbar supports cannot effectively fit the waists of different people, resulting in poor support and easy displacement during body movement, which affects the support effect.
An adjustable double lumbar support office chair was designed. The position of the lumbar support can be adjusted through adjustment components and worm gear mechanism. The movement of the sliding support is controlled by a pivot, connecting rod and limiter, which increases the contact area between the lumbar support and the waist to adapt to the lumbar curve of different people.
It enables flexible adjustment of the lumbar support, increases the contact area with the lower back, improves the lumbar support effect, adapts to the needs of different people, and reduces the possibility of the lumbar support shifting.
Smart Images
Figure CN223627193U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of seat, concretely relates to an adjustable double lumbar support office chair. BACKGROUND
[0002] With the increase of modern people's working and reading time, many people must sit on the seat for a long time, and sitting for a long time will cause the intervertebral disc of the human spine to protrude, shift and other serious injuries due to the long-term compression of body weight, resulting in modern people being very prone to sciatica or ankylosing spondylitis and other serious sequelae. In order to improve people's health, combined with ergonomic design, various lumbar supports that can help the human body maintain correct posture have appeared on the seat.
[0003] Although the traditional single lumbar support can concentrate the supporting force on the lumbar spine part and relieve the pressure of the lumbar spine, it can only provide single-point support, and the coverage and support of the two sides of the waist and the whole back are insufficient. In addition, when the body is frequently active, the single lumbar support is easy to shift and needs to be adjusted frequently, which affects the supporting effect; the subsequent double lumbar support can provide support to both sides of the lumbar spine at the same time, and better fit the human waist curve, however, for different people, the contact area of the waist and the waist support is different, which will affect the supporting effect of the waist, and the existing double lumbar support is usually fixed and cannot be adjusted. UTILITARIAN CONTENT
[0004] The utility model aims at providing an adjustable double lumbar support office chair to solve the above-mentioned deficiencies in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] An adjustable double lumbar support office chair, comprising a seat, an adjusting assembly is arranged on the seat, two lumbar supports are symmetrically arranged on the adjusting assembly, the adjusting assembly comprises a fixed support fixedly arranged on the seat, two sliding supports are respectively slidably connected on both sides of the fixed support, a fixed rod is respectively fixedly connected at both ends of the fixed support, a connecting part is rotatably connected on the sliding support, the other end of the fixed rod and the connecting part is respectively rotatably connected on the lumbar support, a control part for adjusting the position of the sliding support is arranged on the fixed support, and the control part is respectively connected with the two sliding supports.
[0007] Further, the control part comprises a rotating shaft rotatably arranged in the middle part of the fixed support, two connecting rods are symmetrically fixed on the rotating shaft, the ends of the connecting rods are respectively slidably connected with the sliding supports, and a limiting piece for limiting the position of the rotating shaft is further arranged on the connecting rod.
[0008] Further, the connecting part comprises a U-shaped connecting frame, the connecting frame is rotatably connected with the upper side and the lower side of the sliding support respectively, connecting rods are fixedly connected to the two sides of the connecting frame respectively, and the other ends of the connecting rods are rotatably connected to the waist support.
[0009] Further, the limiting device comprises a worm wheel fixedly arranged on the rotating shaft, and a worm is engaged with the worm wheel and rotatably arranged on the fixed support.
[0010] Further, the sliding support is fixedly provided with a positioning rod, and the connecting rod is provided with a positioning slot.
[0011] Further, the positioning slot is arranged along the length direction of the connecting rod.
[0012] In the above technical scheme, the adjustable double-waist-support office chair has the following beneficial effects:
[0013] By adjusting the position of the two sliding supports through the control part, the sliding supports are moved to drive the waist supports to rotate around the connecting part and the waist support, so that the relative positions of the two waist supports can be adjusted to fit the waist of different people and increase the contact area, thereby effectively improving the support effect on the waist.
[0014] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, rather than limiting the present disclosure.
[0015] The present application provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.
[0017] Figure 1 The overall structure of the embodiment of the present application is provided Figure 1 ;
[0018] Figure 2 The overall structure of the embodiment of the present application is provided Figure 2 ;
[0019] Figure 3 The fixed support structure of the embodiment of the present application is provided.
[0020] Reference signs:
[0021] 1, adjusting assembly; 11, waist rest; 12, fixed support; 13, sliding support; 14, fixed rod; 15, positioning rod; 2, connecting part; 21, connecting frame; 22, connecting rod; 3, control part; 31, rotating shaft; 32, connecting rod; 33, positioning groove; 4, position limiter; 41, worm gear; 42, worm. DETAILED DESCRIPTION
[0022] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present disclosure.
[0023] Please refer to Figures 1-3 An adjustable double-waist-rest 11 office chair, comprising a seat, wherein an adjusting assembly 1 is arranged on the seat, two waist rests 11 are symmetrically arranged on the adjusting assembly 1, the adjusting assembly 1 comprises a fixed support 12 fixedly arranged on the seat, two sliding supports 13 are respectively slidably connected to the two sides of the fixed support 12, fixed rods 14 are respectively fixedly connected to the two ends of the fixed support 12, a connecting part 2 is rotatably connected to the sliding support 13, the other ends of the fixed rods 14 and the connecting part 2 are respectively rotatably connected to the waist rests 11, a control part 3 for adjusting the positions of the sliding supports 13 is arranged on the fixed support 12, and the control part 3 is connected to the two sliding supports 13 respectively.
[0024] Further, the control part 3 comprises a rotating shaft 31 rotatably arranged at the middle part of the fixed support 12, two connecting rods 32 are symmetrically fixedly arranged on the rotating shaft 31, the ends of the connecting rods 32 are respectively slidably connected to the sliding supports 13, and a position limiter 4 for limiting the position of the rotating shaft 31 is further arranged on the connecting rod 32. The connecting rods 32 are symmetrically arranged on the two sides of the rotating shaft 31.
[0025] Rotating the rotating shaft 31 drives the connecting rods 32 to rotate, the connecting rods 32 drive the sliding supports 13 to slide along the fixed support 12, the sliding supports 13 move through the connecting part 2 to drive the waist rests 11 to rotate around the connecting parts of the fixed rods 14 and the waist rests 11, after the adjustment is completed, the position of the rotating shaft 31 is limited by the position limiter 4, so as to fix the position of the adjusted waist rests 11.
[0026] Further, the connecting part 2 comprises a connecting frame 21 arranged in a U shape, the connecting frame 21 is rotatably connected to the upper side and the lower side of the sliding support 13 respectively, connecting rods 22 are fixedly connected to the two sides of the connecting frame 21 respectively, and the other ends of the connecting rods 22 are rotatably connected to the waist rests 11.
[0027] Further, the position limiter 4 comprises a worm wheel 41 fixedly arranged on the rotating shaft 31, the worm wheel 41 is engaged with a worm 42, the worm 42 is rotationally arranged on the fixed support 12. The self-locking property of the worm wheel 41 and the worm 42 is utilized to lock the rotating shaft 31, when adjustment is needed, rotating the worm 42 can adjust the rotating shaft 31.
[0028] Further, the sliding support 13 is fixedly arranged with a positioning rod 15, the connecting rod 32 is arranged with a positioning groove 33, the positioning rod 15 is slidably connected in the positioning groove 33. When the connecting rod 32 rotates, the positioning rod 15 is moved through the positioning groove 33, the sliding support 13 is moved along the fixed support 12 through the movement of the positioning rod 15.
[0029] Further, the positioning groove 33 is arranged along the length direction of the connecting rod 32. The direction of the positioning groove 33 is arranged obliquely to the sliding direction of the sliding support 13 along the fixed support 12.
[0030] Working principle: rotating the worm 42 drives the rotating shaft 31 to rotate through the worm wheel 41, the rotating shaft 31 drives the connecting rod 32 to rotate, when the connecting rod 32 rotates, the positioning rod 15 is moved through the positioning groove 33, the sliding support 13 is moved along the fixed support 12 through the movement of the positioning rod 15, the lumbar support 11 is driven to rotate around the connection between the fixed rod 14 and the lumbar support 11 through the connecting frame 21 and the connecting rod 22, after adjusting to the appropriate position, the worm wheel 41 and the worm 42 lock the position of the rotating shaft 31, that is, the position of the lumbar support 11 at this time is fixed.
[0031] The above only describes certain exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. An adjustable dual-tufted lumbar (11) office chair comprising a seat, characterized in that: The seat is provided with an adjusting assembly (1), two waist rests (11) are symmetrically arranged on the adjusting assembly (1), the adjusting assembly (1) comprises a fixed support (12) fixedly arranged on the seat, two sliding supports (13) are respectively slidably connected to the two sides of the fixed support (12), fixed rods (14) are respectively fixedly connected to the two ends of the fixed support (12), connecting parts (2) are rotatably connected to the sliding supports (13), the fixed rods (14) and the other ends of the connecting parts (2) are respectively rotatably connected to the waist rests (11), control parts (3) for adjusting the positions of the sliding supports (13) are arranged on the fixed support (12), and the control parts (3) are respectively connected to the two sliding supports (13).
2. An adjustable dual-torso-recliner (11) office chair according to claim 1, characterized in that, The control part (3) comprises a rotating shaft (31) rotatably arranged in the middle of the fixed support (12), two connecting rods (32) are symmetrically fixedly arranged on the rotating shaft (31), the ends of the connecting rods (32) are respectively slidably connected to the sliding supports (13), and limiters (4) for limiting the position of the rotating shaft (31) are further arranged on the connecting rods (32).
3. An adjustable dual-torso-recliner (11) office chair according to claim 2, characterized in that, The connecting part (2) comprises a connecting frame (21) in the shape of U, the connecting frame (21) is rotatably connected to the upper side and the lower side of the sliding support (13), connecting rods (22) are respectively fixedly connected to the two sides of the connecting frame (21), and the other ends of the connecting rods (22) are rotatably connected to the waist rests (11).
4. An adjustable dual-torso-recliner (11) office chair according to claim 2, characterized in that, The limiter (4) comprises a worm gear (41) fixedly arranged on the rotating shaft (31), the worm gear (41) is meshingly connected with a worm (42), and the worm (42) is rotatably arranged on the fixed support (12).
5. An adjustable dual-torso-recliner (11) office chair according to claim 2, characterized in that, The sliding support (13) is fixedly provided with a positioning rod (15), and the connecting rod (32) is provided with a positioning groove (33).
6. An adjustable dual-torsos-reclining (11) office chair according to claim 5, characterized in that, The positioning groove (33) is arranged along the length direction of the connecting rod (32).