Chair waist support

Abstract

The utility model discloses a chair waist support which comprises a connecting mechanism and a waist support body, the connecting mechanism comprises a pair of connecting blocks, a supporting connecting rod, a first connecting part and a pair of second connecting parts, the pair of connecting blocks are installed on chair back supporting rods on the two sides, the two ends of the supporting connecting rod are connected with the pair of connecting blocks respectively, and the first connecting part and the second connecting part are connected with the connecting blocks respectively. The first connecting part is elastically arranged in the middle of the supporting connecting rod, and the pair of second connecting parts is arranged on the side faces of the pair of connecting blocks. The waist support body is provided with a first connecting end and a pair of second connecting ends, the first connecting end is connected with the first connecting part, and the pair of second connecting ends are respectively connected with the pair of second connecting parts. The device is simple in structure and low in manufacturing cost; the device is convenient to use, large in adjustment amplitude, comprehensive in adjustment direction, wide in application range, rich in elasticity, high in comfort level, stable in structure and long in service life.

Description

Technical Field

[0001] The utility model relates to the field of office chairs, in particular to a lumbar support for a chair. Background Art

[0002] Office chairs are designed to facilitate daily work and social activities. They are used in both personal and professional life, enjoying a wide range of applications and high demand. Different people have different requirements for office chairs. For those who occasionally spend time in the office, a chair simply provides a place to sit. For those who frequently sit in office chairs, prolonged periods of sitting can cause severe damage to the spine, such as herniated and dislocated discs, due to the pressure of body weight. This makes modern people very susceptible to serious complications such as sciatica and ankylosing spondylitis. For this reason, many manufacturers now add a lumbar support to the backrest of their chairs to provide support for the user's lower back and prevent fatigue from prolonged sitting.

[0003] However, in the prior art, lumbar supports are generally fixed to the seat back using a fixed structure, and the position of the lumbar support cannot be adjusted according to the user's body shape or actual needs. The flexibility is poor and cannot meet the actual needs of the user.

[0004] Chinese patent CN108209278A discloses a chair with a lumbar support position adjustment function, comprising a backrest and a lumbar support mounted at the front end of the backrest. The lumbar support is freely adjustable through adjustment tabs, a crossbeam, a guide groove, a limit groove, and an arc-shaped block, thereby achieving convenient operation and a relatively stable lumbar support. However, the invention has a complex structure, numerous parts, is prone to failure, and has a high manufacturing cost. Furthermore, the lumbar support of the invention has a limited range of vertical adjustment, which does not fully meet user requirements. Utility Model Content

[0005] The utility model aims to provide a chair lumbar support which has a simple structure, is easy to use, elastic, has a large adjustment range, and is stable and comfortable.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A lumbar support for a chair, which is installed in the back area of ​​a chair, comprising:

[0008] A connecting mechanism comprising a pair of connecting blocks, a support link, a first connecting portion, and a pair of second connecting portions, wherein the pair of connecting blocks are mounted on the seat back support rods on both sides, the two ends of the support link are respectively connected to the pair of connecting blocks, the first connecting portion is elastically arranged in the middle of the support link, and the pair of second connecting portions are arranged on the sides of the pair of connecting blocks;

[0009] The lumbar support body is provided with a first connecting end and a pair of second connecting ends, the first connecting end is connected to the first connecting portion, and the pair of second connecting ends are respectively connected to the pair of second connecting portions.

[0010] Preferably, the first connecting portion is connected to the supporting link via an elastic arm.

[0011] Preferably, the first connection portion and the pair of second connection portions are distributed in a triangular shape.

[0012] Preferably, the first connecting end is hinged to the first connecting portion, and the pair of second connecting ends are hinged to the pair of second connecting portions respectively.

[0013] Preferably, the pair of connecting blocks are slidably mounted on the seat back support rods on both sides.

[0014] Preferably, the supporting link is made of elastic material.

[0015] Preferably, the lumbar support body includes a lumbar support plate and an elastic support strip, the lumbar support plate is connected to the elastic support strip, and the elastic support strip is formed with the first connecting end and a pair of second connecting ends.

[0016] Preferably, the lumbar support plate and the elastic support strip are both formed with the first connecting end and a pair of second connecting ends.

[0017] Preferably, the elastic support strip extends inwardly toward each other at the end where the pair of second connection ends are located to form a pair of clips, and the lumbar support plate forms slots for inserting the clips at the end positions corresponding to the clips.

[0018] Preferably, the first connecting end is provided with a trapezoidal baffle parallel to its hinge axis.

[0019] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0020] 1. Simple structure, easy to manufacture and assemble, low manufacturing cost;

[0021] 2. The height can be adjusted according to usage habits, it is easy to use, has a large adjustment range, comprehensive adjustment directions, and a wide range of applications;

[0022] 3.Stable structure and long service life;

[0023] 4. The lumbar support is elastic and the lumbar support plate can automatically adjust the angle to fit the waist according to the user's sitting posture. It is easy to use and very comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front structural diagram of the utility model installed on a chair;

[0025] Figure 2 This is a schematic diagram of the back structure of the utility model installed on a chair;

[0026] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the back structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the connecting mechanism structure of the present utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the lumbar support body of the present utility model;

[0030] Figure 7 This is a schematic diagram of the elastic strip structure of the utility model;

[0031] Figure 8 This is a schematic structural diagram of the waist support plate of the present utility model.

[0032] Description of reference numerals:

[0033] 100, connecting mechanism; 110, connecting block; 120, second connecting portion; 130, supporting link; 140, first connecting portion; 150, elastic arm;

[0034] 200, lumbar support body; 210, first connecting end; 220, second connecting end; 230, elastic support bar; 2301, clamping foot; 240, trapezoidal baffle; 250, slot; 260, lumbar support plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, it should be noted that:

[0036] The terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element of the present invention must have a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0037] When an element is referred to as being “fixed to,” “disposed on,” or “provided on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] Unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the utility model based on specific circumstances.

[0039] Example

[0040] Please refer to Figures 1-8 As shown, the present invention discloses a lumbar support for a chair, which is installed in the back area of ​​a seat and includes a connecting mechanism 100 and a lumbar support body 200 .

[0041] The connection mechanism 100 includes a pair of connection blocks 110, a support link 130, a first connection portion 140, and a pair of second connection portions 120. The connection blocks 110 are mounted on the backrest support rods on either side. The support link 130 is connected to the connection blocks 110 at each end. The first connection portion 140 is elastically mounted in the middle of the support link 130, and the second connection portions 120 are located on the sides of the connection blocks 110. This arrangement completes the connection between the connection mechanism 100 and the backrest support rods, forming three connection portions for the lumbar support body 200.

[0042] The lumbar support body 200 has a first connecting end 210 and a pair of second connecting ends 220 . The first connecting end 210 is connected to the first connecting portion 140 , and the pair of second connecting ends 220 are respectively connected to the pair of second connecting portions 120 .

[0043] In this way, since the first connecting portion 140 is elastically arranged in the middle of the supporting link 130, it provides certain support for the lumbar support body 200 while ensuring that it has a certain elasticity, thereby meeting the requirements of support and comfort.

[0044] Please refer to Figure 4 and Figure 5 As shown, in a preferred embodiment, the first connecting portion 140 is elastically connected to the supporting link 130 via an elastic arm 150 , and the required comfort is met by the elastic deformation of the elastic arm 150 .

[0045] Please refer to Figure 5 As shown, in a preferred embodiment, the first connection portion 140 and the pair of second connection portions 120 are distributed in a triangular shape, which ensures the stability and safety of the structure while ensuring the spatial comfort of the lumbar support.

[0046] Please refer to Figure 4 、 Figure 6 and Figure 8 As shown, in a preferred embodiment, the first connecting end 210 is hinged to the first connecting portion 140, and the pair of second connecting ends 220 are respectively hinged to the pair of second connecting portions 120. The lumbar support can adjust the angle of the lumbar support according to the user's preference so that it can fit the human back more perfectly.

[0047] Please refer to Figure 1 and Figure 2 As shown, in a preferred embodiment, a pair of connecting blocks 110 are slidably mounted on the chair back support rods on both sides, so that the lumbar support can slide along the chair back support rods. People can adjust the height according to their preferences when using it, further improving comfort.

[0048] Please refer to Figure 5 As shown, in a preferred embodiment, the supporting link 130 is made of elastic material, and the elastic material is preferably nylon, so that the waist support can provide a certain elasticity, so that it has a buffering effect and improves comfort.

[0049] Please refer to Figure 6 As shown, in a preferred embodiment, the lumbar support body 200 includes a lumbar support plate 260 and an elastic support strip 230. The lumbar support plate 260 is connected to the elastic support strip 230. The elastic support strip 230 is formed with a first connecting end 210 and a pair of second connecting ends 220, which ensures the stability of the lumbar support structure while ensuring comfort. At the same time, the setting of the elastic support strip can also make the lumbar support shake or rotate to a certain extent, so that the lumbar support fits the human back better and makes it more comfortable.

[0050] Please refer to Figure 6 、 Figure 7 and Figure 8 As shown, in a preferred embodiment, the lumbar support plate 260 and the elastic support bar 230 are both formed with a first connecting end 210 and a pair of second connecting ends 220. The integrated structural design simplifies the structure while facilitating the installation of various components.

[0051] Furthermore, in a preferred embodiment, the elastic support strip 230 extends inwardly toward each other at the end portion where the pair of second connection ends 220 are located to form a pair of clips 2301, and the lumbar support plate 260 forms a slot 250 for plugging in the clips 2301 at the end portion corresponding to the clips 2301. By plugging the clips 2301 into the slots 250, the number of screws and other fasteners on the mounting components is reduced, thereby simplifying the structure while ensuring the stability of the structure and making the lumbar support as a whole lighter.

[0052] Please refer to Figure 4 、 Figure 6 and Figure 7 As shown, the first connecting end 210 is provided with a trapezoidal baffle 240 parallel to its hinge axis. The trapezoidal baffle 240 can bear part of the pressure of the hinge bolt installed between the first connecting end 210 and the first connecting part 140 from different angles, thereby structurally avoiding damage caused by the force being applied to the hinge bolt, thereby increasing the service life of the lumbar support.

[0053] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A chair lumbar support, installed in the back area of ​​a seat, characterized in that: include: A connecting mechanism comprising a pair of connecting blocks, a support link, a first connecting portion, and a pair of second connecting portions, wherein the pair of connecting blocks are mounted on the seat back support rods on both sides, the two ends of the support link are respectively connected to the pair of connecting blocks, the first connecting portion is elastically arranged in the middle of the support link, and the pair of second connecting portions are arranged on the sides of the pair of connecting blocks; The lumbar support body is provided with a first connecting end and a pair of second connecting ends, the first connecting end is connected to the first connecting portion, and the pair of second connecting ends are respectively connected to the pair of second connecting portions.

2. The chair lumbar support according to claim 1, characterized in that: The first connecting portion is connected to the supporting link through an elastic arm.

3. The chair lumbar support according to claim 1, characterized in that: The first connection portion and the pair of second connection portions are distributed in a triangular shape.

4. The chair lumbar support according to claim 1, wherein: The first connecting end is hinged to the first connecting portion, and the pair of second connecting ends are hinged to the pair of second connecting portions respectively.

5. The chair lumbar support according to claim 1, characterized in that: The pair of connecting blocks are slidably mounted on the seat back support rods on both sides.

6. The chair lumbar support according to claim 1, wherein: The supporting connecting rod is made of elastic material.

7. The chair lumbar support according to claim 1, characterized in that: The lumbar support body includes a lumbar support plate and an elastic support strip. The lumbar support plate is connected to the elastic support strip. The elastic support strip is formed with the first connecting end and a pair of second connecting ends.

8. The chair lumbar support according to claim 7, wherein: The waist support plate and the elastic support strip are both formed with the first connecting end and a pair of second connecting ends.

9. The chair lumbar support according to claim 7, wherein: The elastic support strip extends inwardly toward each other at the end where the pair of second connection ends are located to form a pair of clamping feet, and the waist support plate forms a slot for inserting the clamping feet at the end position corresponding to the clamping feet.

10. The chair lumbar support according to claim 7, wherein: The first connecting end is provided with a trapezoidal baffle parallel to its hinge axis.

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