Back supporting assembly and seat

Abstract

The back supporting assembly comprises a back support and a waist supporting assembly, the waist supporting assembly comprises a waist rest and a drive-by-wire adjusting mechanism, the waist rest is connected with the back support through the drive-by-wire adjusting mechanism, and a stepless adjusting function of the waist rest is provided for a user through the drive-by-wire adjusting mechanism. The comfort and the use experience of the seat are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a back support assembly and a seat. Background Art

[0002] The structure of the seat includes a seat cushion, a backrest, armrests and a lumbar support. The lumbar support can provide support for the human waist and can greatly improve comfort. However, in related technologies, the lumbar support of some seats has an adjustment function, but the adjustment process can only be adjusted according to preset steps and cannot be adjusted according to the user's usage needs, which affects the user's experience. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a back support assembly that can provide users with a stepless adjustment function for lumbar support, significantly improving the comfort and user experience of the chair.

[0004] In a second aspect, the present invention also proposes a seat using the above-mentioned back support assembly.

[0005] According to the first embodiment of the present invention, a back support assembly is provided, comprising:

[0006] Back support;

[0007] A lumbar support assembly, comprising a lumbar support and a wire-controlled adjustment mechanism, wherein the lumbar support is connected to the back support via the wire-controlled adjustment mechanism;

[0008] The wire-controlled adjustment mechanism includes a fixed plate, a sliding sleeve, a connecting member, a first driving wire, a second driving wire and a wire pulley, wherein the fixed plate is connected to the back support and extends obliquely forward, one end of the sliding sleeve is connected to the lumbar support, and the other end is sleeved on the fixed plate, the connecting member is connected to the sliding sleeve and can slide along the length direction of the fixed plate, the wire pulley is arranged on one side of the back support, one end of the first driving wire is connected to the wire pulley, and the other end is connected to the connecting member, one end of the second driving wire is connected to the wire pulley, and the other end is connected to the connecting member, the rotation of the wire pulley can pull the first driving wire and the second driving wire, the cooperation of the first driving wire and the second driving wire can drive the connecting member to slide, and the connecting member can drive the sliding sleeve and the lumbar support to move.

[0009] The back support assembly provided in accordance with the embodiment of the first aspect of the present invention has at least the following beneficial effects: the wire-controlled adjustment mechanism provides the user with a stepless adjustment function for the lumbar support, significantly improving the comfort and user experience of the seat. Compared with the traditional seat in which the lumbar support can only be adjusted in preset steps, the wire-controlled adjustment mechanism of the present invention achieves continuous and smooth adjustment of the lumbar support position through the cooperation of the wire wheel, the first drive line and the second drive line. This not only meets the different needs of different users for lumbar support, but also allows users to adjust the position of the lumbar support at any time according to their own usage habits and physical conditions, thereby achieving the best comfort effect. In addition, the wire-controlled adjustment mechanism has a simple structure and is easy to operate, which improves the practicality and market competitiveness of the seat.

[0010] According to the back support assembly provided by the embodiment of the first aspect of the present invention, a sliding groove is provided in the middle of the fixed plate along the length direction, the shape of the connecting piece matches the shape of the sliding groove and is arranged in the sliding groove, and the first driving line and the second driving line cooperate to drive the connecting piece so that the connecting piece slides in the sliding groove.

[0011] According to the back support assembly provided by the embodiment of the first aspect of the utility model, the wire-controlled adjustment mechanism also includes a wire seat, the wire seat is arranged on the right side of the back support, and the wire wheel is arranged on the outside of the wire seat, the first driving wire includes a first wire sleeve and a first wire core, the second driving wire includes a second wire sleeve and a second wire core, one end of the first wire sleeve is fixed to the wire seat, and the other end is fixed to the connecting member, one end of the first wire core is fixed to one side of the wire wheel, and the other end is fixed to the inner wall of the slide groove close to one end of the lumbar support, one end of the second wire sleeve is fixed to the wire seat, and the other end is fixed to the inner wall of the slide groove away from one end of the lumbar support, one end of the second wire core is fixed to the other side of the wire wheel, and the other end is fixed to the connecting member, and the wire wheel is rotated to drive the first wire core and the second wire core to make the first wire core and the second wire core move in opposite directions, thereby driving the connecting member to slide.

[0012] According to the back support assembly provided by the embodiment of the first aspect of the present invention, the wire seat is provided with two installation tubes at intervals, and the ends of the first wire sleeve and the second wire sleeve are both fixed to the installation tubes.

[0013] According to the back support assembly provided by the embodiment of the first aspect of the present invention, the wire-controlled adjustment mechanism also includes a worm and a knob, one end of the worm is rotatably connected to the wire seat, and the other end is connected to the knob, the wire wheel is a turbine, and the worm is engaged with the turbine. Rotating the knob can drive the worm to rotate, and rotating the worm can drive the wire wheel to rotate.

[0014] According to the back support assembly provided by the embodiment of the first aspect of the present invention, two fixing blocks are provided on the outer side of the wire seat, and the two fixing blocks are arranged at intervals to define an installation position. The wire wheel is provided at the installation position and its two ends are rotatably connected to the fixing blocks respectively.

[0015] According to the back support assembly provided by the embodiment of the first aspect of the present invention, a mounting hole is provided on the right side of the back support, and the wire seat includes a plug-in portion, which is plugged into the mounting hole.

[0016] According to the back support assembly provided by the embodiment of the first aspect of the present invention, two rotating blocks are spaced apart on the rear side of the lumbar support, a rotating shaft is provided between the two rotating blocks, and the sliding sleeve is connected to the lumbar support via the rotating shaft.

[0017] According to the back support assembly provided by the embodiment of the first aspect of the present invention, a torsion spring is sleeved on the middle portion of the rotating shaft, one end of the torsion spring abuts against the sliding sleeve, and the other end abuts against the rear side of the lumbar support.

[0018] The chair provided in accordance with the embodiment of the second aspect of the present invention comprises the back support assembly as described in the embodiment of the first aspect of the present invention, and the chair has all the beneficial effects of the back support assembly.

[0019] 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

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 An overall schematic diagram of a back support assembly provided in an embodiment of the present utility model;

[0022] Figure 2 An exploded schematic diagram of a back support assembly is provided for an embodiment of the present invention;

[0023] Figure 3 This is an exploded schematic diagram of the wire holder, wire wheel and knob provided in an embodiment of the present utility model;

[0024] Figure 4 This is an exploded schematic diagram of the wire holder, the first control wire, and the second control wire provided in an embodiment of the present utility model.

[0025] The accompanying figures are as follows:

[0026] Back bracket 100; mounting hole 110;

[0027] Lumbar support 200; rotating block 210; rotating shaft 220; torsion spring 230;

[0028] Wire-controlled adjustment mechanism 300; fixed plate 310; slide groove 311; slide sleeve 320; connector 330; first drive wire 340; first wire sleeve 341; first wire core 342; second drive wire 350; second wire sleeve 351; second wire core 352; wire wheel 360; wire seat 370; mounting tube 371; fixed block 372; plug-in portion 373; worm 380; knob 390. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting 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.

[0033] An embodiment of the present invention provides a back support assembly for use in a seat. The specific structure and function of the back support assembly provided by the embodiment of the present invention will be further described below with reference to text and drawings.

[0034] Reference Figures 1 to 4 The back support assembly provided in accordance with the embodiment of the first aspect of the present invention includes: a back support 100 and a lumbar support assembly. The lumbar support assembly includes a lumbar support 200 and a wire-controlled adjustment mechanism 300. The lumbar support 200 is connected to the back support 100 through the wire-controlled adjustment mechanism 300. The wire-controlled adjustment mechanism 300 provides the user with a stepless adjustment function of the lumbar support 200, which significantly improves the comfort and user experience of the seat.

[0035] Reference Figures 1 to 4 In some embodiments, the wire-controlled adjustment mechanism 300 includes a fixed plate 310, a sliding sleeve 320, a connector 330, a first drive wire 340, a second drive wire 350, and a pulley 360. The fixed plate 310 is connected to the back support 100 and extends forward at an angle. The sliding sleeve 320 is connected to the lumbar support 200 at one end and sleeved on the fixed plate 310 at the other end, allowing the sliding sleeve 320 to slide along the length of the fixed plate 310. The connector 330 is connected to the sliding sleeve 320 and also slides along the length of the fixed plate 310. The pulley 360 is located on one side of the back support 100 and serves as a driving source. The first drive wire 340 is connected to the pulley 360 at one end and to the connector 330 at the other end. Similarly, the second drive wire 350 is also connected to the pulley 360 at one end and to the connector 330 at the other end. To adjust the position of the lumbar support 200, the user simply rotates the pulley 360. The rotation of the pulley 360 simultaneously pulls the first drive wire 340 and the second drive wire 350. Due to the cooperation between the first drive wire 340 and the second drive wire 350, the connector 330 slides along the length of the fixed plate 310. The sliding of the connector 330 in turn drives the sliding sleeve 320 and the lumbar support 200 to move, thereby achieving stepless adjustment of the lumbar support 200.

[0036] According to the back support assembly provided by the embodiment of the first aspect of the present invention, the design of the wire-controlled adjustment mechanism 300 provides the user with a stepless adjustment function of the lumbar support 200, which significantly improves the comfort and user experience of the seat. Compared with the traditional seat in which the lumbar support 200 can only be adjusted in preset steps, the wire-controlled adjustment mechanism 300 of the present invention realizes continuous and smooth adjustment of the position of the lumbar support 200 through the cooperation of the wire wheel 360, the first drive line 340 and the second drive line 350. This not only meets the different needs of different users for lumbar support, but also allows users to adjust the position of the lumbar support 200 at any time according to their own usage habits and physical conditions, thereby achieving the best comfort effect. In addition, the wire-controlled adjustment mechanism 300 has a simple structure and is easy to operate, which improves the practicality and market competitiveness of the seat.

[0037] Reference Figure 2According to the back support assembly provided by the embodiment of the first aspect of the present invention, a slide groove 311 extending along the length direction of the fixed plate 310 is designed in the middle part of the fixed plate 310. The slide groove 311 provides a sliding track for the connecting member 330. The shape of the connecting member 330 can be tightly and smoothly embedded in the slide groove 311. When the pulley 360 rotates and pulls the first drive line 340 and the second drive line 350, the two drive lines will work together to drive the connecting member 330 to slide in the slide groove 311 along the length direction of the fixed plate 310. This not only enhances the stability and accuracy of the sliding of the connecting member 330, but also reduces friction and shaking during the sliding process through the guiding effect of the slide groove 311, making the adjustment of the lumbar support 200 smoother and more reliable. When the user adjusts the position of the lumbar support 200, they can feel a smoother and more delicate adjustment effect, further improving the comfort and user experience of the seat.

[0038] Reference Figures 2 to 4 According to the back support assembly provided by the embodiment of the first aspect of the present invention, the wire-controlled adjustment mechanism 300 also includes a wire seat 370. The wire seat 370 is arranged on the right side of the back support 100, and the wire pulley 360 is arranged on the outside of the wire seat 370. Such a layout not only facilitates the operation of the wire pulley 360, but also ensures the overall compactness of the wire-controlled adjustment mechanism 300. The first drive wire 340 is composed of a first wire sleeve 341 and a first wire core 342, and the second drive wire 350 is composed of a second wire sleeve 351 and a second wire core 352. One end of the first wire sleeve 341 is firmly fixed to the wire seat 370, and the other end is connected to the connecting member 330; one end of the first wire core 342 is fixed to one side of the wire pulley 360, and the other end thereof extends to the inner wall of the slide groove 311 near one end of the lumbar support 200 and is fixed. Similarly, one end of the second wire sleeve 351 is also fixed to the wire seat 370, but its other end is fixed to the inner wall of the slide 311 away from the end of the lumbar support 200; one end of the second wire core 352 is fixed to the other side of the spool 360, and the other end is connected to the connector 330. When the user rotates the spool 360, the spool 360 will simultaneously drive the first wire core 342 and the second wire core 352 to move, and because the first wire core 342 and the second wire core 352 are respectively fixed on different sides of the spool 360, they will move in opposite directions. The tension of the first wire core 342 and the second wire core 352 allows the coordinated action of the first wire core 342 and the second wire core 352 to smoothly pull the connector 330 to slide in the slide 311 when the spool 360 rotates, thereby achieving stepless adjustment of the lumbar support 200.

[0039] Reference Figure 3 and Figure 4According to the back support assembly provided by the embodiment of the first aspect of the present invention, two mounting barrels 371 are spaced apart on the wire holder 370. These two mounting barrels 371 provide stable fixing points for the first wire sleeve 341 and the second wire sleeve 351. In actual use, the end of the first wire sleeve 341 is firmly fixed in one of the mounting barrels 371, while the end of the second wire sleeve 351 is fixed in the other mounting barrel 371. This not only ensures that the first wire sleeve 341 and the second wire sleeve 351 can remain stable when subjected to force and are not easily dislodged or loosened, but also provides sufficient space for the movement of the wire cores through the spaced layout of the mounting barrels 371, thereby avoiding interference or entanglement between the wire cores.

[0040] Furthermore, the design of the mounting barrel 371 makes the structure of the wire holder 370 more compact and rational, thereby improving the reliability and durability of the entire wire-controlled adjustment mechanism 300. During installation and maintenance, the mounting barrel 371 also facilitates operators to quickly and accurately secure or replace the wire sleeve, thereby improving work efficiency.

[0041] Reference Figures 2 to 4 According to the back support assembly provided by the embodiment of the first aspect of the present invention, a worm 380 and a knob 390 are added to the wire-controlled adjustment mechanism 300, wherein one end of the worm 380 is rotatably connected to the wire seat 370 to ensure the stability of the worm 380 during rotation; the other end is connected to the knob 390, so that the user can easily operate the worm 380 by rotating the knob 390.

[0042] It will be appreciated that the wire pulley 360 in this embodiment is designed as a worm gear, meshing with the worm 380. When the user turns the knob 390, the knob 390 drives the worm 380 to rotate, and the rotation of the worm 380 further drives the meshed worm gear (i.e., the wire pulley 360) to rotate. This worm 380-worm gear transmission not only has a self-locking feature, effectively preventing the wire pulley 360 from rotating when not in operation, but also provides a good transmission ratio, allowing the user to easily rotate the wire pulley 360 with minimal force, thereby achieving fine adjustment of the lumbar support 200.

[0043] Furthermore, the design of the worm 380 and knob 390 further enhances the user-friendly operation of the wire-controlled adjustment mechanism 300. Users can precisely and remotely control the lumbar support 200 via the knob 390 without having to directly contact the wire wheel 360. This not only improves the practicality and convenience of the back support assembly, but also further enhances the comfort and user experience of the chair.

[0044] Reference Figures 2 to 4According to the back support assembly provided by the embodiment of the first aspect of the present invention, two fixing blocks 372 are provided on the outside of the wire seat 370. The two fixing blocks 372 are spaced apart to define a mounting position, thereby defining a mounting position for mounting the wire pulley 360. In actual application, the wire pulley 360 is installed in the mounting position defined by the two fixing blocks 372, and its two ends are rotatably connected to the two fixing blocks 372. This not only ensures that the wire pulley 360 can remain stable when subjected to force and is not easily deflected or shaken, but also provides sufficient space for the rotation of the wire pulley 360 through the spaced arrangement of the fixing blocks 372, ensuring that the wire pulley 360 can rotate smoothly and unimpeded.

[0045] Furthermore, the design of the fixing block 372 enhances the structural strength of the wire holder 370, improving the stability and durability of the entire wire-controlled adjustment mechanism 300. During installation and maintenance, the fixing block 372 also facilitates the operator to quickly and accurately install or remove the wire reel 360, thereby improving work efficiency.

[0046] Reference Figure 2 According to the back support assembly provided by the embodiment of the first aspect of the present invention, a mounting hole 110 is designed on the right side of the back support 100. The mounting hole 110 provides a positioning point for the installation of the wire holder 370. The wire holder 370 includes a plug-in portion 373. The shape and size of the plug-in portion 373 match the mounting hole 110, so that the wire holder 370 can be easily inserted and fixed in the mounting hole 110 through the plug-in portion 373. This not only ensures the stability and accuracy of the wire holder 370 during installation, but also improves the connection strength between the wire holder 370 and the back support 100 through the close fit between the plug-in portion 373 and the mounting hole 110, ensuring that the wire holder 370 is not easily loosened or falls off during use.

[0047] Furthermore, the design of the connector 373 and the mounting hole 110 makes the installation of the entire wire-operated adjustment mechanism 300 simpler and more efficient, allowing operators to quickly install the wire holder 370 without complicated tools or steps. This not only improves the usability and maintainability of the back support assembly, but also further enhances the overall quality of the chair and the user experience.

[0048] Reference Figure 2 According to the back support assembly provided by the first embodiment of the present invention, two rotating blocks 210 are spaced apart on the rear side of the lumbar support 200, providing support points for the rotation of the lumbar support 200. A rotating shaft 220 is provided between the two rotating blocks 210, extending through them. The sliding sleeve 320 is connected to the lumbar support 200 via this rotating shaft 220, achieving a rotational connection between the lumbar support 200 and the sliding sleeve 320. The design of the rotating blocks 210 and the rotating shaft 220 improves the load-bearing capacity and durability of the lumbar support 200.

[0049] Reference Figure 2 According to the back support assembly provided by the embodiment of the first aspect of the present invention, a torsion spring 230 is sleeved in the middle of the rotating shaft 220. This torsion spring 230 is located between the sliding sleeve 320 and the lumbar support 200, and serves as a connection and buffer. One end of the torsion spring 230 abuts against the sliding sleeve 320, while the other end abuts against the back side of the lumbar support 200. When the user's waist abuts against the lumbar support 200, the torsion spring 230 will rotate according to the force applied to the lumbar support 200, which not only reduces the impact force between the user's waist and the lumbar support 200, but also allows the lumbar support 200 to fit the user's waist more closely, thereby improving the user experience.

[0050] The chair provided according to the embodiment of the second aspect of the present invention includes the back support assembly of the embodiment of the first aspect of the present invention, and the chair has all the beneficial effects of the back support assembly.

[0051] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A back support assembly, characterized in that: include: Back support; A lumbar support assembly, comprising a lumbar support and a wire-controlled adjustment mechanism, wherein the lumbar support is connected to the back support via the wire-controlled adjustment mechanism; The wire-controlled adjustment mechanism includes a fixed plate, a sliding sleeve, a connecting member, a first driving wire, a second driving wire and a wire pulley, wherein the fixed plate is connected to the back support and extends obliquely forward, one end of the sliding sleeve is connected to the lumbar support, and the other end is sleeved on the fixed plate, the connecting member is connected to the sliding sleeve and can slide along the length direction of the fixed plate, the wire pulley is arranged on one side of the back support, one end of the first driving wire is connected to the wire pulley, and the other end is connected to the connecting member, one end of the second driving wire is connected to the wire pulley, and the other end is connected to the connecting member, the rotation of the wire pulley can pull the first driving wire and the second driving wire, the cooperation of the first driving wire and the second driving wire can drive the connecting member to slide, and the connecting member can drive the sliding sleeve and the lumbar support to move.

2. The back support assembly according to claim 1, wherein: A sliding groove is provided in the middle of the fixed plate along the length direction. The shape of the connecting member matches the shape of the sliding groove and is arranged in the sliding groove. The first driving line and the second driving line cooperate to drive the connecting member so that the connecting member slides in the sliding groove.

3. The back support assembly according to claim 2, wherein: The wire-controlled adjustment mechanism also includes a wire seat, which is arranged on the right side of the back bracket, and the wire wheel is arranged on the outside of the wire seat, the first driving wire includes a first wire sleeve and a first wire core, the second driving wire includes a second wire sleeve and a second wire core, one end of the first wire sleeve is fixed to the wire seat, and the other end is fixed to the connecting member, one end of the first wire core is fixed to one side of the wire wheel, and the other end is fixed to the inner wall of the slide groove near one end of the waist support, one end of the second wire sleeve is fixed to the wire seat, and the other end is fixed to the inner wall of the slide groove near one end of the waist support, one end of the second wire core is fixed to the other side of the wire wheel, and the other end is fixed to the connecting member. By rotating the wire wheel, the wire wheel can drive the first wire core and the second wire core to make the first wire core and the second wire core move in opposite directions, thereby driving the connecting member to slide.

4. The back support assembly according to claim 3, wherein: The wire seat is provided with two installation tubes at intervals, and the ends of the first wire sleeve and the second wire sleeve are both fixed to the installation tubes.

5. The back support assembly according to claim 3, wherein: The wire-controlled adjustment mechanism also includes a worm and a knob. One end of the worm is rotatably connected to the wire seat, and the other end is connected to the knob. The wire wheel is a turbine. The worm is engaged with the turbine. Rotating the knob can drive the worm to rotate, and rotating the worm can drive the wire wheel to rotate.

6. The back support assembly according to claim 5, wherein: Two fixing blocks are provided on the outer side of the wire seat. The two fixing blocks are arranged at intervals to define a mounting position. The wire wheel is provided at the mounting position and both ends are rotatably connected to the fixing blocks.

7. The back support assembly according to claim 6, wherein: A mounting hole is provided on the right side of the back bracket, and the wire seat includes a plug-in portion, which is plugged into the mounting hole.

8. The back support assembly according to claim 1, wherein: Two rotating blocks are spaced apart on the rear side of the lumbar support, a rotating shaft is provided between the two rotating blocks, and the sliding sleeve is connected to the lumbar support via the rotating shaft.

9. The back support assembly according to claim 8, wherein: A torsion spring is sleeved on the middle part of the rotating shaft, one end of the torsion spring abuts against the sliding sleeve, and the other end abuts against the rear side of the lumbar support.

10. A seat, characterized in that: Comprising a back support assembly as claimed in any one of claims 1 to 9.

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