A lumbar support using a flexion deformation spring device

Abstract

The utility model provides a waist rest of utilizing the bending deformation elastic device, including elastic mounting panel and waist rest subassembly, the waist rest subassembly includes main waist rest and the vice waist rest of hinging on both sides of main waist rest, the elastic mounting panel is half surrounding type elastic mounting panel, and both sides end of elastic mounting panel is hinged with vice waist rest respectively, the utility model discloses the purpose is to propose a waist rest of utilizing the bending deformation elastic device, the mounting frame of this device is the elastic structure of deformable, and the elastic source and deformation support structure are fused into an organic whole, and the effect that the elastic self -adaptation waist rest is realized to the more simple structure.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to a lumbar support that utilizes a bending deformation elastic device. Background Technology

[0002] A lumbar support is a support device specifically designed for the human lower back to improve seat comfort and support. It is commonly found in car seats, office chairs, and sofas.

[0003] Lumbar supports fill the gap between the lower back and the chair back, conforming to the curve of the waist and providing reasonable support to reduce the burden on the lower back muscles. However, different users require different levels of support, and fixed lumbar supports, because they cannot be adjusted, can only provide a single type of support and cannot adapt to the support needs of different users.

[0004] The existing lumbar support structure with elastic self-adaptive function has a linked lumbar support and side lumbar support, which works with springs to achieve the elastic self-adaptive effect. The existing solution mounts the lumbar supports arranged on the left, middle and right sides on a fixed mounting frame. When the three sides of the lumbar support achieve self-adaptation, they will exhibit an opening and closing effect. Since the rigid mounting frame will not deform, a deflection structure needs to be set between the left and right lumbar supports and the mounting frame, so that the left and right lumbar supports can open and close by deflecting inward or outward relative to each other. The elasticity of this solution comes from the spring set in the middle lumbar support.

[0005] From the above, it can be understood that the spring in the existing elastic adaptive lumbar support structure is located on the central lumbar support, while the wrapping support on both sides does not have elastic elements. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this invention is to propose a lumbar support that utilizes a bending deformation elastic device. The mounting frame of this device is a deformable elastic structure, integrating the source of elastic force and the deformation support structure into one, thus achieving the effect of an elastically adaptive lumbar support with a relatively simple structure.

[0007] To achieve this objective, the present invention adopts the following technical solution: A lumbar support utilizing a bending deformation elastic device includes an elastic mounting plate and a lumbar support assembly; The lumbar support assembly includes a main lumbar support and secondary lumbar supports hinged to both sides of the main lumbar support; The elastic mounting plate is a semi-enclosed elastic mounting plate, and its two ends are respectively hinged to the auxiliary waist support.

[0008] Preferably, it also includes a guide assembly, which includes a guide base plate, a guide cylinder, and a guide sleeve; The guide base plate is semi-enclosed, and a guide cylinder is provided at the center of the concave surface of the guide base plate. The guide cylinder passes through the center of the elastic mounting plate. The main waist support is provided with a guide sleeve adapted to the guide cylinder on the side facing the elastic mounting plate. The guide cylinder is slidably sleeved on the outside of the guide sleeve. The elastic mounting plate is divided into two elastic sections, left and right, with the guide cylinder as the center; the guide base plate is a rigid structure, and the two ends of the guide base plate are respectively fixed to the middle position of the corresponding elastic section.

[0009] Preferably, the guide cylinder and the guide sleeve have the same cross-sectional shape, and the cross-sectional shape of the guide cylinder is polygonal.

[0010] Ideally, it should also include a travel adjustment component; The stroke adjustment assembly includes a rotating block, a screw, and a stroke block. The rotating block is rotatably mounted at the center of the guide base plate. The screw is fixedly mounted on the rotating block and passes through the guide base plate into the guide cylinder. The stroke block is slidably accommodated in the inner cavity of the guide sleeve. The stroke block and the screw are threadedly engaged. The inner cavity of the guide sleeve is provided with a blocking structure near the main waist support, and the blocking structure is located in the sliding path between the stroke block and the guide sleeve.

[0011] Furthermore, the centers of the screw, guide sleeve, stroke block, and guide cylinder are located on the same axis; The guide sleeve, the stroke block, and the guide cylinder have the same polygonal cross-section. The stroke block is slidably accommodated in the guide cylinder, and the guide cylinder is slidably accommodated in the guide sleeve.

[0012] Furthermore, it also includes a height adjustment plate; The back of the guide plate is provided with multiple bolt holes, and the height adjustment plate is provided with multiple oblong holes at the positions corresponding to the bolt holes; The height adjustment plate has a structure for fixed installation with the seat.

[0013] Preferably, it also includes a stroke slot and a slider. The stroke slot is formed on the side wall of the guide cylinder and is formed along the sliding direction of the guide cylinder. The slider is fixed to the guide sleeve and forms a sliding fit with the stroke slot. The stroke of the slider is limited by the length of the stroke slot.

[0014] A chair includes the aforementioned lumbar support structure, and also includes a seat, a main backrest, and chair legs, wherein the main backrest is connected to the backrest frame, and the chair legs are connected to the seat.

[0015] One of the above technical solutions includes the following beneficial effects: when a person's lower back rests against the lumbar support, the elastic mounting plate bends and deforms, generating elasticity; the design of the main lumbar support and the two auxiliary lumbar supports in the lumbar support assembly can better conform to the curve of the human waist, enhancing the lumbar support assembly's wrapping feel. The elasticity provided by the elastic mounting plate, combined with the wrapping effect of the lumbar support, constitutes a lumbar support with elastic adaptive function. This solution utilizes the supporting and elastic deformation effect provided by the elastic mounting plate alone, in conjunction with the lumbar support assembly, to achieve the effect of an elastic adaptive lumbar support with a relatively simple structure. Attached Figure Description

[0016] Figure 1 This is a three-dimensional perspective view of a frontal view of one embodiment of the present invention; Figure 2 This is a three-dimensional perspective view of one embodiment of the present invention from the rear view. Figure 3 This is a schematic cross-sectional view of one embodiment of the present invention; Figure 4 yes Figure 3 A magnified view of a portion of the image; Figure 5 yes Figure 1 A magnified view of a portion of point A in the middle.

[0017] The components include: elastic mounting plate 100, lumbar support assembly 200, main lumbar support 210, secondary lumbar support 220, guide assembly 300, guide base plate 310, guide cylinder 320, stroke slot 321, guide sleeve 330, slider 331, blocking structure 340, stroke adjustment assembly 400, rotating block 410, screw 420, stroke block 430, and height adjustment plate 500. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] like Figure 1 and Figure 2 As shown, a lumbar support utilizing a bending deformation elastic device includes an elastic mounting plate 100 and a lumbar support assembly 200. The lumbar support assembly 200 includes a main lumbar support 210 and a secondary lumbar support 220 hinged to both sides of the main lumbar support 210. The elastic mounting plate 100 is a semi-enclosed elastic mounting plate 100, and the two ends of the elastic mounting plate 100 are respectively hinged to the auxiliary waist support 220.

[0020] When a person's lower back rests against the lumbar support, the elastic mounting plate 100 bends and deforms, generating elasticity. The design of the main lumbar support 210 and the two side auxiliary lumbar supports 220 in the lumbar support assembly 200 better conforms to the curve of the lower back, enhancing the wrapping effect of the lumbar support assembly 200. The elasticity provided by the elastic mounting plate 100, combined with the wrapping effect of the lumbar support, constitutes a lumbar support with elastic adaptive function. This solution utilizes the support and elastic deformation provided by the elastic mounting plate 100 alone, in conjunction with the lumbar support assembly 200, to achieve the effect of an elastic adaptive lumbar support with a relatively simple structure.

[0021] like Figure 3 and Figure 4 As shown, it also includes a guide assembly 300, which includes a guide base plate 310, a guide cylinder 320 and a guide sleeve 330; The guide base plate 310 is semi-enclosed, and a guide cylinder 320 is provided at the center of the concave surface of the guide base plate 310. The guide cylinder 320 passes through the center of the elastic mounting plate 100. The main waist support 210 is provided with a guide sleeve 330 adapted to the guide cylinder 320 on the side facing the elastic mounting plate 100. The guide cylinder 320 is slidably sleeved on the outside of the guide sleeve 330. The elastic mounting plate 100 is divided into two side elastic parts, left and right, with the guide cylinder 320 as the center; the guide base plate 310 is a rigid structure, and the two ends of the guide base plate 310 are respectively fixed to the middle position of the corresponding side elastic part.

[0022] The function of the guide assembly 300 is to provide linear guidance for the movement of the main waist support through the sliding cooperation between the guide sleeve 330 and the guide cylinder 320; the elastic mounting plate 100 is divided into two elastic parts, left and right, with the guide sleeve as the center, which limits the deformation range of the elastic mounting plate 100 to both sides, and with the guide sleeve 330 as the fixed center, it avoids the overall disorderly deformation of the elastic mounting plate 100.

[0023] Furthermore, the guide cylinder 320 and the guide sleeve 330 have the same cross-sectional shape, and the cross-sectional shape of the guide cylinder 320 is polygonal.

[0024] This design prevents relative rotation between the guide cylinder 320 and the guide sleeve 330, thus improving structural stability.

[0025] like Figure 4 As shown, it also includes a travel adjustment component 400; The stroke adjustment assembly 400 includes a rotating block 410, a screw 420, and a stroke block 430. The rotating block 410 is rotatably mounted at the center of the guide base plate 310. The screw 420 is fixedly mounted on the rotating block 410 and passes through the guide base plate 310 into the guide cylinder 320. The stroke block 430 is slidably accommodated in the inner cavity of the guide sleeve 330. The stroke block 430 and the screw 420 are threadedly engaged. The inner cavity of the guide sleeve 330 is provided with a blocking structure 340 near the main waist support 210. The blocking structure is located in the sliding path between the stroke block 430 and the guide sleeve 330.

[0026] The rotating block 410 drives the screw 420 to rotate. The screw 420, through its threaded engagement with the stroke block 430, can move axially within the guide cylinder 320. As the position of the stroke block 430 changes, its relative distance to the blocking structure on the guide sleeve 330 changes, thereby limiting the maximum sliding stroke of the main lumbar support 210 of the guide cylinder 320. This allows for adjustment of the front and rear support depth of the main lumbar support 210, adapting to the individual needs of different users for lumbar support strength and position.

[0027] Furthermore, the centers of the screw 420, guide sleeve 330, stroke block 430, and guide cylinder 320 are located on the same axis; The guide sleeve 330, the stroke block 430 and the guide cylinder 320 have the same polygonal structure in cross-section. The stroke block 430 is slidably accommodated in the guide cylinder 320, and the guide cylinder 320 is slidably accommodated in the guide sleeve 330.

[0028] To ensure the stability and guiding accuracy of structural movements.

[0029] In addition, it also includes a height adjustment plate 500; The back of the guide plate 310 is provided with multiple bolt holes, and the height adjustment plate is provided with multiple oblong holes at the positions corresponding to the bolt holes; The height adjustment plate has a structure for fixed installation with the seat.

[0030] By engaging the bolt holes of the guide plate 310 with the oblong holes of the height adjustment plate, the height of the guide plate and the components integrated therewith can be adjusted up and down along the length of the oblong holes.

[0031] As a supplement to the above technology, it also includes a stroke groove 321 and a slider 331. The stroke groove 321 is opened on the side wall of the guide cylinder 320, and the stroke groove 331 is opened in the sliding direction of the guide cylinder 320. The slider 331 is fixed to the guide sleeve 330, and the slider 331 and the stroke groove 321 form a sliding fit. The stroke of the slider 331 is limited by the length of the stroke groove 321.

[0032] The stroke groove is opened along the direction in which the guide cylinder 320 and the guide sleeve 330 slide relative to each other. The cooperation relationship formed with the slider can force the guide sleeve to only make linear movements along a preset axis. In addition, the relative positional relationship between the guide cylinder 320 and the guide sleeve 330 can be limited by the stroke groove and the sliding stroke of the slider, so that the guide cylinder 320 and the guide sleeve 330 maintain a sliding sleeve assembly relationship.

[0033] A chair includes the aforementioned lumbar support structure, and also includes a seat, a main backrest, and chair legs, wherein the main backrest is connected to the backrest frame, and the chair legs are connected to the seat.

[0034] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A lumbar support utilizing a bending deformation elastic device, characterized in that, Includes flexible mounting plate and lumbar support assembly; The lumbar support assembly includes a main lumbar support and secondary lumbar supports hinged to both sides of the main lumbar support; The elastic mounting plate is a semi-enclosed elastic mounting plate, and its two ends are respectively hinged to the auxiliary waist support.

2. The lumbar support utilizing a bending deformation elastic device according to claim 1, characterized in that, It also includes a guide assembly, which comprises a guide base plate, a guide cylinder, and a guide sleeve; The guide base plate is semi-enclosed, and a guide cylinder is provided at the center of the concave surface of the guide base plate. The guide cylinder passes through the center of the elastic mounting plate. The main waist support is provided with a guide sleeve adapted to the guide cylinder on the side facing the elastic mounting plate. The guide cylinder is slidably sleeved on the outside of the guide sleeve. The elastic mounting plate is divided into two elastic sections, left and right, with the guide cylinder as the center; the guide base plate is a rigid structure, and the two ends of the guide base plate are respectively fixed to the middle position of the corresponding elastic section.

3. The lumbar support utilizing a bending deformation elastic device according to claim 2, characterized in that, The guide cylinder and the guide sleeve have the same cross-sectional shape, and the cross-sectional shape of the guide cylinder is polygonal.

4. The lumbar support utilizing a bending deformation elastic device according to claim 3, characterized in that, It also includes a travel adjustment component; The stroke adjustment assembly includes a rotating block, a screw, and a stroke block. The rotating block is rotatably mounted at the center of the guide base plate. The screw is fixedly mounted on the rotating block and passes through the guide base plate into the guide cylinder. The stroke block is slidably accommodated in the inner cavity of the guide sleeve. The stroke block and the screw are threadedly engaged. The inner cavity of the guide sleeve is provided with a blocking structure near the main waist support, and the blocking structure is located in the sliding path between the stroke block and the guide sleeve.

5. The lumbar support utilizing a bending deformation elastic device according to claim 4, characterized in that, The centers of the screw, guide sleeve, stroke block, and guide cylinder are located on the same axis; The guide sleeve, the stroke block, and the guide cylinder have the same polygonal cross-section. The stroke block is slidably accommodated in the guide cylinder, and the guide cylinder is slidably accommodated in the guide sleeve.

6. The lumbar support utilizing a bending deformation elastic device according to claim 5, characterized in that, It also includes a height adjustment plate; The back of the guide plate is provided with multiple bolt holes, and the height adjustment plate is provided with multiple oblong holes at the positions corresponding to the bolt holes; The height adjustment plate has a structure for fixed installation with the seat.

7. The lumbar support utilizing a bending deformation elastic device according to claim 6, characterized in that, It also includes a stroke slot and a slider. The stroke slot is opened on the side wall of the guide cylinder and is opened in the direction of sliding of the guide cylinder. The slider is fixed to the guide sleeve and the slider and the stroke slot form a sliding fit. The stroke of the slider is limited by the length of the stroke slot.

Images