Rotary waist rest for swivel chair

Abstract

The utility model provides a rotating waist rest for a swivel chair, which is characterized in that a connecting component is arranged on the outer surface of a waist rest plate, a rotating component is arranged on the outer surface of the connecting component, a buffer reset component is arranged on the outer surface of the rotating component, a reinforcing component is arranged inside the connecting component, and a fixing component is arranged on the outer surface of the connecting component. The first connecting plate is movably installed on the outer surface of the rear end of the waist backup plate, and fixing threads are connected into the first connecting plate and the waist backup plate in a threaded mode. According to the rotating waist rest for the swivel chair, the waist rest plate rotates through the rotating assembly, meanwhile, the buffering reset assembly is connected to the outer surface of the rotating assembly, and when the waist rest plate drives the rotating assembly to rotate, the buffering reset assembly can move, has a buffering function and enables the waist rest plate and the rotating assembly to reset when pressure is lost; the phenomenon that the springs lose elasticity after being used for a long time is reduced, the possibility that the waist backup plates shake and loosen is prevented through the reinforcing assemblies, and the stability of connection between the waist backup plates is improved.

Description

Technical Field

[0001] The utility model relates to the field of swivel chair manufacturing, especially to a rotating lumbar support for swivel chairs. Background Art

[0002] Swivel chairs are generally divided into two types: semi-swivel chairs and full-swivel chairs. A semi-swivel chair can rotate 90 degrees to the left and right in the front, and a full-swivel chair can rotate 360 degrees. Usually, it consists of: a headrest, a backrest, a seat, armrests, a support rod (gas rod), a rotating shaft, a five-claw base, and caster wheels.

[0003] In the prior art, the patent application with the publication number CN219270530U enables the lumbar support plate to move in the front-back direction through the single-round head annular card slot, and based on such movement, the center line of the compensation spring can rotate so that the lumbar support plate can have the ability to adjust its posture in multiple directions. However, it only relies on one spring to achieve the rotation of the lumbar support plate, and there is no external support for limiting the position of the spring. After a long time, the spring will fail, thus affecting the rotation of the lumbar support plate. Moreover, it uses bolt connection, and the lumbar support back is prone to looseness due to long-term shaking.

[0004] Therefore, it is necessary to provide a rotating lumbar support for swivel chairs to solve the above technical problems. Summary of the Invention

[0005] The utility model provides a rotating lumbar support for swivel chairs, which solves the problems that the internal spring elasticity of the swivel chair lumbar support fails after a long time, affecting the rotation of the lumbar support, and the bolt connection is prone to looseness.

[0006] To solve the above technical problems, the rotating lumbar support for swivel chairs provided by the utility model includes: a lumbar support plate, and a connection component is arranged on the outer surface of the lumbar support plate;

[0007] A rotating component, which is arranged on the outer surface of the connection component;

[0008] A buffer and reset component, which is arranged on the outer surface of the rotating component;

[0009] A reinforcement component, which is arranged inside the connection component;

[0010] A fixing component, which is arranged on the outer surface of the connection component.

[0011] Preferably, the connection component includes a first connection plate, the first connection plate is movably installed on the outer surface of the rear end of the lumbar support plate, and a fixing thread is threadedly connected inside the first connection plate and the lumbar support plate.

[0012] Preferably, the rotating component includes a spherical rotating sleeve fixedly connected to the outer surface of the first connecting plate. A spherical block is movably connected inside the spherical rotating sleeve, and a wedge-shaped ring is fixedly connected to the outer surface of the spherical rotating sleeve.

[0013] Preferably, the buffer and reset component includes a second connecting plate fixedly connected to the rear end of the spherical block. A buffer and reset spring is movably installed inside the second connecting plate. One end of the buffer and reset spring is fixedly connected to a pushing block, and the pushing block is movably installed on the outer surface of the second connecting plate.

[0014] Preferably, the reinforcement component includes a reinforcement plate movably embedded inside the first connecting plate, and a reinforcement spring is fixedly connected to one end of the reinforcement plate.

[0015] Preferably, the fixing component includes a fixing block fixedly connected to the top of one end of the reinforcement plate. A fixing groove is formed inside the fixing block, and the fixing block is movably installed on the outer surface of the first connecting plate.

[0016] Preferably, a fixing plate is fixedly installed on the outer surface of the first connecting plate. A fixing pin is movably installed inside the fixing plate, and one end of the fixing pin is movably embedded inside the fixing groove.

[0017] Compared with the related art, the rotating lumbar support for a swivel chair provided by the present utility model has the following beneficial effects:

[0018] The present utility model provides a rotating lumbar support for a swivel chair. While the lumbar support plate rotates through the rotating component, a buffer and reset component is connected to the outer surface of the rotating component. When the lumbar support plate drives the rotating component to rotate, the buffer and reset component can move, having buffering and enabling the lumbar support plate and the rotating component to reset when the pressure is lost, and also reducing the phenomenon that the spring loses elasticity after long-term use. The reinforcement component prevents the possible shaking and loosening of the lumbar support plate, increasing the stability of the connection between the lumbar support plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a preferred embodiment of the rotating lumbar support for a swivel chair provided by the present utility model;

[0020] Figure 2 is Figure 1 the sectional structural schematic diagram shown;

[0021] Figure 3 is Figure 1 the front connection structural schematic diagram of the buffer and reset component shown;

[0022] Figure 4 P is Figure 1Schematic diagram of the connection structure between the first connecting plate and the fixing component as shown.

[0023] Reference numerals in the figure: 1, lumbar support plate,

[0024] 2, connecting component, 21, first connecting plate, 22, fixing thread,

[0025] 3, rotating component, 31, spherical rotating sleeve, 32, spherical block, 33, wedge ring,

[0026] 4, buffer reset component, 41, second connecting plate, 42, buffer reset spring, 43, pushing block,

[0027] 5, reinforcement component, 51, reinforcement plate, 52, reinforcement spring,

[0028] 6, fixing component, 61, fixing block, 62, fixing groove, 63, fixing plate, 64, fixing pin. Specific implementation mode

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and implementation modes.

[0030] [[ID='26']]Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 wherein, Figure 1 is a schematic structural diagram of a preferred embodiment of a rotating lumbar support for a swivel chair provided by the present utility model; Figure 2 is Figure 1 the sectional structural diagram as shown; Figure 3 is Figure 1 the front connection structural diagram of the buffer reset component as shown; Figure 4 is Figure 1 the connection structural diagram of the first connecting plate and the fixing component as shown. The rotating lumbar support for a swivel chair includes: a lumbar support plate 1, and a connecting component 2 is disposed on the outer surface of the lumbar support plate 1;

[0031] a rotating component 3, and the rotating component 3 is disposed on the outer surface of the connecting component 2;

[0032] a buffer reset component 4, and the buffer reset component 4 is disposed on the outer surface of the rotating component 3;

[0033] a reinforcement component 5, and the reinforcement component 5 is disposed inside the connecting component 2;

[0034] a fixing component 6, and the fixing component 6 is disposed on the outer surface of the connecting component 2.

[0035] The function of the connecting component 2 is to connect and fix. The function of the rotating component 3 is to rotate according to the pressure received on the surface of the lumbar support plate 1. The function of the buffer and reset component 4 is to buffer and reset. The function of the reinforcement component 5 is to increase the stability of the connection between the lumbar support plate 1 and the connecting component 2. The function of the fixing component 6 is to facilitate the installation and disassembly between the lumbar support plate 1 and the connecting component 2.

[0036] The connecting component 2 includes a first connecting plate 21, and the first connecting plate 21 is movably installed on the outer surface of the rear end of the lumbar support plate 1. A fixing thread 22 is threadedly connected inside the first connecting plate 21 and the lumbar support plate 1.

[0037] T-shaped threaded holes are provided on the surface of the first connecting plate 21. The number of threaded holes and fixing threads 22 can be determined according to the actual situation, so as to ensure the stability of the connection between the lumbar support plate 1 and the fixing thread 22. Threaded holes corresponding to the threaded holes on the surface of the first connecting plate 21 are provided on the surface of the lumbar support plate 1 according to the number of fixing threads 22. The fixing thread 22 is threaded into the corresponding threaded hole on the surface of the lumbar support plate 1 through the internal threaded hole of the first connecting plate 21, thereby threadedly fixing the lumbar support plate 1 and the first connecting plate 21.

[0038] The rotating component 3 includes a spherical rotating sleeve 31. The spherical rotating sleeve 31 is fixedly connected to the outer surface of the first connecting plate 21. A spherical block 32 is movably connected inside the spherical rotating sleeve 31. A wedge-shaped ring 33 is fixedly connected to the outer surface of the spherical rotating sleeve 31.

[0039] The spherical rotating sleeve 31 is a circular sleeve with a spherical groove provided inside, and a small hole is provided at the rear end of the spherical rotating sleeve 31. The spherical block 32 is a sphere connected to a rod. The sphere is movably embedded inside the spherical groove of the spherical rotating sleeve 31. The connecting rod in the spherical block 32 is fixedly connected to the surface of the buffer and reset component 4 through the hole provided on the surface of the spherical rotating sleeve 31. The spherical rotating sleeve 31 and the spherical block 32 are set as a spherical structure, so as to achieve rotation in any direction. The wedge-shaped ring 33 is fixedly connected to the edge of the hole provided on the surface of the spherical rotating sleeve 31 to enclose its edge, and the rear surface is an inclined surface.

[0040] The buffer and reset component 4 includes a second connecting plate 41. The second connecting plate 41 is fixedly connected to the rear end of the spherical block 32. A buffer and reset spring 42 is movably installed inside the second connecting plate 41. One end of the buffer and reset spring 42 is fixedly connected to a push block 43, and the push block 43 is movably installed on the outer surface of the second connecting plate 41.

[0041] The rear end of the connecting rod in the spherical block 32 is connected to the center of the surface of the second connecting plate 41. A plurality of grooves are arranged in an inner circumferential array in the second connecting plate 41. A buffer return spring 42 is installed in each groove. A slider is fixedly connected to the rear end of the pushing block 43. The sliders on the surface of each pushing block 43 are movably embedded in each groove and fixedly connected to one end of the buffer return spring 42 in each groove. The pushing blocks 43 are arranged in a circumferential array on the outer surface of the front end of the second connecting plate 41 to surround the outer surface of the spherical block 32 and are movably connected to the inclined surface of the wedge-shaped ring 33. When the lumbar support plate 1 rotates, the spherical rotating sleeve 31 rotates in the direction of the pressure received by the lumbar support plate 1. The inclined surface of the wedge-shaped ring 33 in this direction squeezes the pushing block 43 in this direction. The pushing block 43 slides outward under force, and the buffer return spring 42 is compressed. Thus, while the lumbar support plate 1 can rotate in any direction, the lumbar support plate 1 can also be buffered. A plurality of buffer return springs 42 are provided and connected, and the buffer return springs 42 are embedded in the second connecting plate 41, which increases the service life of the buffer return springs 42 and the stability of the rotation of the rotating component 3. When the pressure on the lumbar support plate 1 is removed, the elastic force of the buffer return spring 42 causes the rotating component 3 and the lumbar support plate 1 to reset.

[0042] The reinforcement component 5 includes a reinforcement plate 51. The reinforcement plate 51 is movably embedded in the first connecting plate 21. One end of the reinforcement plate 51 is fixedly connected to a reinforcement spring 52.

[0043] Every two fixing threads 22 are taken as a group. Each reinforcement component 5 is arranged inside the first connecting plate 21 between the two fixing threads 22 in each group. A groove is formed inside the first connecting plate 21. One ends of the two reinforcement plates 51 are respectively movably embedded in the groove. Both ends of the reinforcement spring 52 are fixedly connected to one ends of the two reinforcement plates 51 embedded in the groove. The elastic force of the reinforcement spring 52 causes the two reinforcement plates 51 to block the threaded opening formed inside the first connecting plate 21 and block the top of the fixing thread 22, thereby preventing the fixing thread 22 from shaking and loosening inside the lumbar support plate 1 and the first connecting plate 21.

[0044] The fixing component 6 includes a fixing block 61 fixedly connected to the top of one end of the reinforcement plate 51. A fixing groove 62 is formed inside the fixing block 61. The fixing block 61 is movably installed on the outer surface of the first connecting plate 21.

[0045] At the top of one end of the groove opened inside the first connecting plate 21, two reinforcing plates 51 in each group are embedded, and a fixing block 61 is fixedly connected to the top of each. Every two fixing blocks 61 form a group. The fixing component 6 is arranged on the outer surface of the first connecting plate 21. The fixing plate 63 is fixedly installed on the outer surface of the first connecting plate 21 at the center of the two fixing blocks 61. Two grooves are opened inside the fixing plate 63. At both ends of the fixing plate 63 which is a U-shaped rod, a wedge-shaped block is fixedly connected. The two ends of the U-shaped rod are respectively movably embedded inside the two grooves, and a spring is movably sleeved on the outer surface.

[0046] A fixing plate 63 is fixedly installed on the outer surface of the first connecting plate 21. A fixing bolt 64 is movably installed inside the fixing plate 63. One end of the fixing bolt 64 is movably embedded inside the fixing groove 62.

[0047] When sliding relatively towards the fixing blocks 61, it drives the two reinforcing plates 51 to slide relatively and opens the threaded hole opened inside the first connecting plate 21, and the reinforcing spring 52 is compressed. When the two fixing grooves 62 slide to the front of the two wedge-shaped blocks in the fixing bolt 64, the elastic force of the spring pushes the two wedge-shaped blocks to be embedded inside the fixing groove 62, thereby fixing the fixing blocks 61 and the reinforcing plates 51, and then the installation and disassembly of the lumbar support plate 1 and the connecting component 2 can be carried out.

[0048] The working principle of the rotating lumbar support for the swivel chair provided by the present utility model is as follows:

[0049] When the user's back rotates, the pressure of the user's back causes the lumbar support plate 1 to rotate, driving the spherical rotating sleeve 31 to rotate on the outer surface of the spherical block 32. And during this process, the wedge-shaped ring 33 on the outer surface of the spherical rotating sleeve 31 squeezes the pushing block 43 on the outer surface in its rotating direction, causing the pushing block 43 to move outwards. The buffer return spring 42 is compressed by the thrust of the pushing block 43, thus having a buffering effect. When the lumbar support plate 1 loses pressure, the elastic force of the buffer return spring 42 pushes the pushing block 43 to move inwards and pushes the wedge-shaped ring 33 to rotate to the vertical state for resetting. And during this process, the elastic force of the reinforcing spring 52 makes the reinforcing plate 51 be located at the rear surface of the fixing thread 22, blocking the reinforcing plate 51 from threading out of the inside of the lumbar support plate 1 and the first connecting plate 21, so that the fixing thread 22 cannot rotate, increasing the connection stability between the lumbar support plate 1 and the connecting component 2. When it is necessary to disassemble and separate the lumbar support plate 1 and the first connecting plate 21, only need to simultaneously pull the two fixing blocks 61 inwards to drive the two reinforcing plates 51 to slide relatively and disengage from the surface of the fixing thread 22. When the two fixing blocks 61 are close, the elastic force of the spring in the fixing bolt 64 pushes one end of the fixing bolt 64 to be embedded inside the fixing groove 62, thereby fixing the two fixing blocks 61, and then the thread part of the fixing thread 22 can be removed from the inside of the lumbar support plate 1 and the first connecting plate 21.

[0050] Compared with the related technologies, the rotating lumbar support for a swivel chair provided by the present utility model has the following beneficial effects:

[0051] The present utility model provides a rotating lumbar support for a swivel chair. While the lumbar support plate 1 is rotated through the rotating component 3, a buffer and reset component 4 is connected to the outer surface of the rotating component 3. When the lumbar support plate 1 drives the rotating component 3 to rotate, the buffer and reset component 4 can move, having buffering and enabling the lumbar support plate 1 and the rotating component 3 to be reset when the pressure is lost, and also reducing the phenomenon that the spring loses its elasticity after long-term use. The reinforcing component 5 prevents the possibility of the lumbar support plate 1 shaking and loosening, and increases the stability of the connection between the lumbar support plates 1.

[0052] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A rotating lumbar support for a swivel chair, characterized in that: include: A lumbar support plate, wherein the outer surface of the lumbar support plate is provided with a connecting component; a rotating assembly, the rotating assembly being arranged on an outer surface of the connecting assembly; A buffer reset component, the buffer reset component is arranged on the outer surface of the rotating component; a reinforcement component, the reinforcement component being arranged inside the connecting component; A fixing component is arranged on the outer surface of the connecting component.

2. The rotating lumbar support for a swivel chair according to claim 1, characterized in that: The connecting assembly includes a first connecting plate, which is movably mounted on the outer surface of the rear end of the lumbar support plate. The first connecting plate and the internal threads of the lumbar support plate are connected by a fixing thread.

3. The rotating lumbar support for a swivel chair according to claim 2, characterized in that: The rotating assembly includes a spherical rotating sleeve, which is fixedly connected to the outer surface of the first connecting plate. A spherical block is movably connected inside the spherical rotating sleeve, and a wedge ring is fixedly connected to the outer surface of the spherical rotating sleeve.

4. The rotating lumbar support for a swivel chair according to claim 3, characterized in that: The buffer reset assembly includes a second connecting plate, which is fixedly connected to the rear end of the spherical block. A buffer reset spring is movably installed inside the second connecting plate. One end of the buffer reset spring is fixedly connected to a push block, and the push block is movably installed on the outer surface of the second connecting plate.

5. The rotating lumbar support for a swivel chair according to claim 2, characterized in that: The reinforcement assembly includes a reinforcement plate, which is movably embedded in the interior of the first connecting plate, and one end of the reinforcement plate is fixedly connected to a reinforcement spring.

6. The rotating lumbar support for a swivel chair according to claim 5, characterized in that: The fixing assembly includes a fixing block, which is fixedly connected to the top of one end of the reinforcing plate. A fixing groove is provided inside the fixing block, and the fixing block is movably mounted on the outer surface of the first connecting plate.

7. The rotating lumbar support for a swivel chair according to claim 6, characterized in that: A fixing plate is fixedly mounted on the outer surface of the first connecting plate, a fixing pin is movably mounted inside the fixing plate, and one end of the fixing pin is movably embedded in the fixing groove.

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