Search

JP-2026514497-A - Lumbar support assembly and chair equipped therewith

JP2026514497AJP 2026514497 AJP2026514497 AJP 2026514497AJP-2026514497-A

Abstract

The present invention relates to a lumbar support assembly and a chair equipped therewith, comprising a pair of moving bodies provided to be movable vertically along the left and right sides of the backrest frame, and mesh pressure plates provided to be movable in the front-rear direction relative to the pair of moving bodies, which press forward the left and right ends of a backrest support mesh provided on the backrest frame to support the user's back, and the pair of mesh pressure plates provided on each of the pair of moving bodies can press the backrest support mesh at different heights and with different pressures by the user's operation, thereby providing the advantage of improving user convenience and comfort. [Selection Diagram] Figure 4

Inventors

  • ソ、ジ ウォン

Assignees

  • シディズ、インク．

Dates

Publication Date
20260511
Application Date
20230901
Priority Date
20230425

Claims (12)

  1. A pair of moving bodies are provided to move vertically along the left and right sides of the backrest frame, A mesh pressure plate is provided so as to be movable in the front-rear direction relative to the pair of moving bodies, and presses forward the left and right ends of the backrest support mesh provided on the backrest frame to support the user's back, Equipped with, A lumbar support assembly characterized in that a pair of mesh pressure plates provided on each of the pair of moving bodies can apply pressure to the backrest support mesh at different heights and with different pressures depending on the user's operation.
  2. The lumbar support assembly according to claim 1, wherein each of the pair of moving bodies has a handle portion formed thereon for the user to grasp by hand, extending a predetermined length from the left end to the right end or from the right end to the left end of the backrest frame.
  3. Each of the pair of moving bodies is provided with a front-to-back moving adjustment lever for moving the mesh pressure plate in the front-to-back direction. The lumbar support assembly according to claim 1, wherein the forward and backward moving adjustment lever is provided to stop after the mesh pressure plate has been moved such that the pressure applied to the backrest support mesh differs at a plurality of different rotation angle points.
  4. The aforementioned front and rear moving adjustment lever is provided in a hollow form so that a guide pole, which is formed to protrude rearward from the back of the mesh pressure plate, passes through it. The lumbar support assembly according to claim 3, wherein a rotating cam surface is formed on the inner circumferential surface of the hollow portion of the front and rear moving adjustment lever, which is formed continuously in the circumferential direction to form the plurality of different rotation angle points, but which has different separation distances from the rear end.
  5. The lumbar support assembly according to claim 4, wherein the area around the guide pole of the mesh pressure plate is formed to correspond to or be separated from the rotating cam surface of the front and rear moving adjustment lever, but having a corresponding cam surface that is separated from the back surface of the mesh pressure plate at a different distance.
  6. The lumbar support assembly according to claim 5, wherein the rotating cam surface and the corresponding cam surface have a plurality of locking portions formed thereon, which lock the rotation of the front-to-rear moving adjustment lever at the different rotation angle points.
  7. The lumbar support assembly according to claim 4, wherein the guide pole formed on the mesh pressure plate is inserted from the front to the rear of the front-to-rear moving adjustment lever, but is engaged with the moving body by a guide screw fastened from the rear to the front of the front-to-rear moving adjustment lever in a manner that prevents it from detaching forward.
  8. The lumbar support assembly according to claim 3, wherein the front-to-back moving adjustment lever has a lever handle formed to protrude radially outward for the user to rotate with their finger.
  9. The lumbar support assembly according to claim 8, wherein the front-to-back moving adjustment lever is rotated such that the tip of the lever handle is directed inward between the left and right ends of the backrest frame.
  10. The moving body is further provided with a sliding block, part of which is inserted inside the backrest frame and slides vertically. The lumbar support assembly according to claim 1, wherein the sliding block is provided with a haptic block that applies a predetermined elastic force to the inner surface of the backrest frame.
  11. The lumbar support assembly according to claim 1, wherein the mesh pressure plates provided on each of the pair of moving bodies are located on the inside between the left and right ends of the pair of backrest frames, but are positioned further outward than the intermediate portion between the left and right ends.
  12. Backrest frame and The aforementioned backrest frame is provided with a backrest support mesh to support the user's back, A lumbar support assembly is provided that is movable vertically along the backrest frame and applies forward pressure to both the left and right ends of the backrest support mesh, but is adjustable so that the tension of the backrest support mesh is different. Equipped with, The lumbar support assembly is A pair of moving bodies are provided along the left and right sides of the aforementioned backrest frame, respectively, so as to be movable in the vertical direction, A mesh pressure plate is provided so as to be movable in the front-rear direction relative to the pair of moving bodies, and presses forward the left and right ends of the backrest support mesh provided on the backrest frame to support the user's back, Equipped with, A chair characterized in that a pair of mesh pressure plates can apply pressure to the backrest support mesh at different heights and with different pressures, depending on the user's operation.

Description

The present invention relates to a lumbar support assembly and a chair including the same, and more specifically, to a lumbar support assembly and a chair including the same, which are provided with height and depth adjustments on both the left and right sides of the backrest frame, thereby enabling indirect lumbar support of the user through tension adjustment of the backrest support mesh, without direct user contact, and improving seating comfort and ease. Generally, a chair consists of a seat, a backrest, and armrests, and the seat and backrest are equipped with cushions to increase the comfort of the person sitting in it. However, modern people, who often sit at desks for long periods, tend to hunch over, and this prolonged posture often leads to complaints of lower back pain. This is because, when you maintain a bent-over posture for extended periods, the lower part of the spine, which initially forms a very gentle "C" shape, gradually becomes a relatively straight line. As a result, the weight of the upper body is not evenly distributed across the entire spine, but rather concentrated in the lower part. Therefore, in the past, to prevent back pain, people would sometimes purchase a separate cushion or pillow and place it under their lower back while sitting. However, these cushions and pillows are not fixed to the chair and cannot maintain a constant angle, meaning they cannot adequately support the lower back as the user moves. Recently, various lumbar support devices have been developed to address the problems mentioned above. However, most of these devices have complex configurations, making them difficult to assemble, and their large number of parts increases manufacturing costs. Korean Registered Patent No. 10-1148032 (registered May 15, 2012) (hereinafter referred to as the "Prior Patent") discloses a chair equipped with a conventional lumbar support device. For reference, the Prior Patent is a patent filed and registered by the applicant of the present invention. The prior patent described a device comprising a fixed frame, each fixed to the backrest, and a support pad connected to the fixed frame by vertical adjustment means and horizontal adjustment means, which moves in the vertical and horizontal directions. The support pad directly supports the user's back portion, which is supported by a mesh (not shown), thereby fulfilling its function. However, the prior patent has a problem: the support pad directly presses against the user's back, which can cause discomfort as the user directly feels the hard texture of the support pad. While a soft material such as sponge could be placed at the front to alleviate this discomfort, this is undesirable because it could cause damage due to friction with the mesh. Furthermore, the prior patent has a problem in that, because both ends of the lumbar support device are adjusted to the same height uniformly, it is impossible to correct the posture of users with spinal disorders such as scoliosis. This is a front perspective view showing a lumbar support assembly and a chair equipped therewith according to one embodiment of the present invention.This is a rear perspective view showing a lumbar support assembly and a chair equipped therewith according to one embodiment of the present invention.This is a partial rear view of Figure 2.This is a perspective view showing the assembly and operating principle of the lumbar support assembly relative to the backrest frame.This is a perspective view showing a lumbar support assembly according to one embodiment of the present invention.These are exploded perspective views from one and the other, showing the assembly structure of the lumbar support assembly using lumbar guide rails on the inner backrest frame, which is part of the backrest configuration.These are exploded perspective views from one and the other, showing the assembly structure of the lumbar support assembly using lumbar guide rails on the inner backrest frame, which is part of the backrest configuration.Figures 6a and 6b are perspective views illustrating the operation of the lumber guide rail.Figure 5 shows an exploded perspective view of the front section and an exploded perspective view of the rear section.Figure 5 shows an exploded perspective view of the front section and an exploded perspective view of the rear section.Figure 5 is a cross-sectional view showing how the depth of the mesh pressure plate is adjusted by rotating the front and rear moving adjustment levers.Figure 5 is a cross-sectional view showing how the depth of the mesh pressure plate is adjusted by rotating the front and rear moving adjustment levers. A lumbar support assembly and a chair equipped therewith, according to one embodiment of the present invention, will be described in detail below with reference to the attached drawings. When assigning reference numerals to the components in each drawing, care should be taken to ensure that the same component has the same reference num