Waist rest structure with adaptive function and chair

Abstract

A waist rest structure with an adaptive function and a chair comprise a waist supporting plate and further comprise a telescopic assembly. The telescopic assembly comprises an inner sleeve and an outer sleeve longitudinally arranged outside the inner sleeve in a sleeving mode, the outer sleeve slides along the outer wall of the inner sleeve, the outer end of the inner sleeve is fixedly installed on the waist supporting plate, and the outer end of the outer sleeve is fixed to the waist supporting plate; a transverse sliding groove is formed in the bottom of the end, located on the waist supporting plate, of the outer sleeve, an abutting sliding block is slidably installed in the transverse sliding groove, a containing groove capable of containing the abutting sliding block is longitudinally formed in the bottom of the inner sleeve, the transverse sliding groove is connected to the containing groove, and the width of the transverse sliding groove is not smaller than that of the containing groove. The utility model aims to provide the waist rest structure with the adaptive function, the waist rest has a certain movement range by adjusting the stretching position of the waist rest, and a user changes the space required to be supported by adjusting so as to adapt to the supporting requirements of different users.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to a lumbar support structure and chair with adaptive function. 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] Therefore, there is a need to provide a lumbar support structure with adaptive functions to optimize the problem that fixed lumbar supports can only provide support in a fixed position and improve the effect of lumbar supports in providing support to the human body. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to propose a lumbar support structure with adaptive function. This device allows the lumbar support to have a certain range of motion by adjusting the extension position of the lumbar support. Users can adjust the position to change the space required for support, thereby adapting to the support needs of different users.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An adaptive lumbar support structure includes a lumbar support plate and a telescopic component;

[0008] The telescopic assembly includes an inner sleeve and an outer sleeve that is longitudinally fitted outside the inner sleeve. The outer sleeve slides along the outer wall of the inner sleeve. The outer end of the inner sleeve is fixedly installed on the waist support plate, and the outer end of the outer sleeve is fixedly installed on the waist support plate.

[0009] The bottom of the outer sleeve at one end of the waist support plate has a horizontal groove, and a pressing slider is slidably installed in the horizontal groove. The bottom of the inner sleeve has a longitudinally opened receiving groove that can accommodate the pressing slider. The horizontal groove is connected to the receiving groove, and the width of the horizontal groove is not less than that of the receiving groove.

[0010] Preferably, a guide block is installed at the lower part of the outer sleeve, and a guide cavity is installed on the inner surface of the waist support plate;

[0011] The sliding block is fixedly installed on the guide block, and the guide block is slidably installed in the guide cavity; the bottom of the guide block is provided with an elastic abutment, and the guide cavity is provided with a concave-convex guide structure to accommodate the elastic abutment at the position corresponding to the guide block.

[0012] Preferably, it also includes a translation rod, wherein a strip-shaped cutout is provided laterally at the position corresponding to the guide block on the waist support plate, and the translation rod is laterally fixed to the guide block through the strip-shaped cutout.

[0013] Preferably, the inner sleeve is longitudinally mounted with a spring mounting cylinder, and a spring is installed inside the spring mounting cylinder; the outer sleeve is longitudinally provided with a spring constraint post, and the other end of the spring is fitted onto the spring constraint post.

[0014] Furthermore, secondary lumbar supports are hinged to both sides of the lumbar support plate;

[0015] It also includes a back frame, which is semi-enclosed, with the rear parts of the secondary lumbar supports on both sides installed at both ends of the back frame via deflection blocks.

[0016] Furthermore, the deflection block is block-shaped, and two pivot mounting positions are vertically provided through the front and rear parts of the deflection block; one pivot mounting position is hinged to the rear part of the secondary waist support, and the other pivot mounting position is hinged to the end of the back frame at the corresponding position.

[0017] Furthermore, the back frame is equipped with a seat connection structure.

[0018] Furthermore, it also includes a resilient connecting arm, which comprises an upper connecting arm and a lower connecting arm;

[0019] The upper connecting arm and the lower connecting arm are hinged together. The hinge shafts of the upper connecting arm and the lower connecting arm are equipped with torsion springs, and the two bottom single-tight ends of the torsion springs abut against the upper connecting arm and the lower connecting arm respectively.

[0020] The upper connecting arm is fixedly installed on the back frame.

[0021] 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.

[0022] One of the above technical solutions includes the following beneficial effects: the lumbar support plate can be extended and locked by installing a telescopic component. In the sliding state, the abutting slider is slid to a position where it does not interfere with the end of the inner sleeve, so that the receiving groove of the inner sleeve is connected with the transverse sliding groove of the outer sleeve. In this state, the inner sleeve slides along the outer sleeve without interference. In the locked state, the abutting slider slides laterally to a position where it interferes with the inner sleeve and abuts against the end of the inner sleeve. At this time, the inner sleeve and the outer sleeve cannot slide, and the extension stroke is fixed, thereby realizing two stroke adjustments of extension and retraction to adapt to the support needs of different users. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the lumbar support plate according to one embodiment of the present utility model;

[0025] Figure 3 yes Figure 2 A magnified view of a section at point C;

[0026] Figure 4 This is a schematic diagram of the transverse sliding groove and receiving groove according to one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the installation relationship of the translation rod according to an embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the spring installation relationship according to one embodiment of the present invention.

[0029] The components include: 1. Waist support plate; 11. Sub-waist support; 2. Telescopic assembly; 21. Inner sleeve; 21. Receiving groove; 22. Outer sleeve; 22. Transverse slide groove; 221. Pressing slider; 222. Guide block; 223. Guide cavity; 224. Elastic pressing element; 225. Concave-convex guide structure; 226. Spring; 3. Back frame; 4. Deflection block; 41. Elastic connecting arm; 5. Upper connecting arm; 51. Lower connecting arm; 52. Translation rod; 6. Detailed Implementation

[0030] 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.

[0031] like Figure 1 The diagram shows an adaptive lumbar support structure, which includes a lumbar support plate 1 and a telescopic component 2.

[0032] like Figure 3 and Figure 4 As shown, the telescopic component 2 includes an inner sleeve 21 and an outer sleeve 22 that is longitudinally fitted outside the inner sleeve 21. The outer sleeve 22 slides along the outer wall of the inner sleeve 21. The outer end of the inner sleeve 21 is fixedly installed on the waist support plate 1, and the outer end of the outer sleeve 22 is fixedly installed on the waist support plate 1.

[0033] The bottom of the outer sleeve 22 located at one end of the waist support plate 1 has a transverse sliding groove 221, and a pressing slider 222 is slidably installed in the transverse sliding groove 221. The bottom of the inner sleeve 21 has a longitudinally opened receiving groove 211 that can accommodate the pressing slider 222. The transverse sliding groove 221 is connected to the receiving groove 211, and the width of the transverse sliding groove 221 is not less than that of the receiving groove 211.

[0034] The lumbar support plate 1 can be extended and locked by installing the telescopic component 2. In the sliding state, the abutting slider 222 is slid to a position where it does not interfere with the end of the inner sleeve 21, so that the receiving groove of the inner sleeve 21 is connected with the transverse sliding groove 221 of the outer sleeve 22. In this state, the inner sleeve 21 slides along the outer sleeve 22 without interference. In the locked state, the abutting slider 222 slides laterally to a position where it interferes with the inner sleeve 21 and abuts against the end of the inner sleeve 21. At this time, the inner sleeve 21 and the outer sleeve 22 cannot slide, and the extension stroke is fixed, thereby realizing two stroke adjustments of extension and retraction to adapt to the support needs of different users.

[0035] like Figure 3 and Figure 4 As shown, a guide block 223 is installed at the lower part of the outer sleeve 22, and a guide cavity 224 is installed on the inner surface of the waist support plate 1;

[0036] The sliding block 222 is fixedly installed on the guide block 223, and the guide block 223 is slidably installed in the guide cavity 224; the bottom of the guide block 223 is provided with an elastic abutment 225, and the guide cavity 224 is provided with a concave-convex guide structure 226 at the position corresponding to the guide block 223 to accommodate the elastic abutment 225.

[0037] The elastic abutment 225 at the lower part of the guide block 223 can find an adjustment position in the concave and convex guide structure 226 at the preset position, making it more convenient for users to use and to adjust the locking and releasing.

[0038] like Figure 5 As shown, it also includes a translation rod 6. The waist support plate 1 has a horizontal strip-shaped cutout at the position corresponding to the guide block 223. The translation rod is horizontally fixed to the guide block 223 through the strip-shaped cutout.

[0039] The position of the locking slider 222 can be adjusted by moving the translation lever 6, making it more convenient for users to use.

[0040] In addition, a spring mounting cylinder is longitudinally installed on the inner sleeve 21, and a spring 3 is installed inside the spring mounting cylinder; a spring constraint post is longitudinally provided inside the outer sleeve 22, and the other end of the spring 3 is fitted onto the spring constraint post.

[0041] The spring 3 allows the lumbar support plate 1 to adapt when the telescopic component 2 is released, so that the elasticity of the spring 3 can be used to press against the user's waist, thereby improving the user's experience.

[0042] In addition, secondary waist supports 11 are hinged to both sides of the waist support plate 1;

[0043] It also includes a back frame 4, which is semi-enclosed, with the rear parts of the secondary waist supports 11 on both sides respectively installed at both ends of the back frame 4 via deflection blocks 41.

[0044] When the lumbar support plate changes its position, it also moves the angle of the secondary lumbar support 12, thereby changing the wrapping state of the entire lumbar support assembly 1, so that the user's waist can receive support from more positions and improve the user's comfort.

[0045] As a supplement to the above technology, the deflection block 41 is block-shaped, and two pivot mounting positions are vertically provided through the front and rear parts of the deflection block 41; one pivot mounting position is hinged to the rear part of the auxiliary waist support 11, and the other pivot mounting position is hinged to the end of the back frame 4 at the corresponding position.

[0046] The deflection block 41 has a certain deflection angle relative to the back frame 4, so as to adapt to the displacement of the auxiliary lumbar support 11 as the lumbar support plate 1 deflects.

[0047] The back frame 4 is equipped with a seat connection structure.

[0048] In addition, it also includes an elastic connecting arm 5, which includes an upper connecting arm 51 and a lower connecting arm 52;

[0049] The upper connecting arm 51 and the lower connecting arm 52 are hinged together. The hinge shafts of the upper connecting arm 51 and the lower connecting arm 52 are equipped with torsion springs. The two bottom single-tight ends of the torsion springs are respectively pressed against the upper connecting arm 51 and the lower connecting arm 52.

[0050] The upper connecting arm 51 is fixedly installed on the back frame 4.

[0051] The upper connecting arm 51 and the lower connecting arm 52 are connected by a torsion spring to provide elastic tightening. After the lower connecting arm 52 is installed on the chair base, the upper connecting arm 51 will elastically push the back frame 4 towards the user's waist to further elastically tighten the user's waist.

[0052] 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.

[0053] 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 structure having an adaptive function, comprising a lumbar support plate, characterized in that, Further comprising a telescopic assembly; The telescopic assembly comprises an inner sleeve and an outer sleeve longitudinally sleeved outside the inner sleeve, the outer sleeve sliding along the outer wall of the inner sleeve, the outer end of the inner sleeve being fixedly installed on the waist support plate, and the outer end of the outer sleeve being fixed on the waist support plate; A horizontal sliding groove is formed at the bottom of one end of the waist support plate, a resisting sliding block is slidingly installed in the horizontal sliding groove, a receiving groove is longitudinally formed at the bottom of the inner sleeve to accommodate the resisting sliding block, the horizontal sliding groove is connected to the receiving groove, and the width of the horizontal sliding groove is not less than that of the receiving groove.

2. The lumbar support structure having an adaptive function according to claim 1, wherein, A guide block is installed at the lower part of the outer sleeve, and a guide cavity is installed on the inner surface of the waist support plate; The resisting sliding block is fixedly installed on the guide block, and the guide block is slidingly installed in the guide cavity; the bottom of the guide block is provided with an elastic resisting member, and the guide cavity is provided with a concave-convex guide structure corresponding to the guide block below.

3. The lumbar support structure having an adaptive function according to claim 2, wherein, A translation rod is transversely fixed to the guide block through a strip-shaped hollow corresponding to the guide block.

4. The lumbar support structure having an adaptive function according to claim 1, wherein A spring installation cylinder is longitudinally installed on the inner sleeve, and a spring is installed in the spring installation cylinder; a spring constraint column is longitudinally arranged inside the outer sleeve, and the other end of the spring is sleeved on the spring constraint column.

5. The lumbar support structure having an adaptive function according to claim 1, wherein, Two auxiliary waist supports are respectively hinged to the two sides of the waist support plate. A backrest is further included, the backrest is in a semi-enclosing shape, and the rear parts of the two auxiliary waist supports are respectively installed at the two ends of the backrest through deflection blocks.

6. The lumbar support structure having an adaptive function according to claim 5, wherein, The deflection block is in a block shape, two vertical shaft installation positions are vertically arranged through the front and rear parts of the deflection block; one of the vertical shaft installation positions is hinged to the rear part of the auxiliary waist support, and the other vertical shaft installation position is hinged to the end part of the backrest at the corresponding position.

7. The lumbar support structure having an adaptive function according to claim 6, wherein The backrest is provided with a seat connecting structure.

8. The lumbar support structure having an adaptive function according to claim 7, wherein, Further comprising an elastic connecting arm, the elastic connecting arm comprises an upper connecting arm and a lower connecting arm; The upper connecting arm and the lower connecting arm are hinged together, a torsion spring is installed on the hinge shaft of the upper connecting arm and the lower connecting arm, and the two bottom single tight ends of the torsion spring are respectively abutted against the upper connecting arm and the lower connecting arm; The upper connecting arm is fixedly installed on the backrest.

9. A chair using the lumbar support structure having an adaptive function as described above, characterized by The waist support structure with adaptive function according to any one of claims 5-8 further comprises a seat, a main back and a chair leg, the main back is connected with the backrest, and the chair leg is connected with the seat.

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