Chair back waist rest

Abstract

The utility model discloses a chair back waist rest which comprises a fixing piece, an elastic device and an arc-shaped supporting piece. The arc-shaped supporting piece is connected with the fixing piece through an elastic device. A mounting part and at least two elastic connecting parts are arranged on one side of the fixing piece, and the two elastic connecting parts are symmetrically arranged on the two sides of the mounting part; a plurality of first fixing grooves are formed in the elastic connecting part, and a plurality of second fixing grooves corresponding to the first fixing grooves are formed in the arc-shaped supporting piece; the two ends of the elastic device are embedded in the first fixing groove and the second fixing groove, the backrest and the waist rest can be finely adjusted according to the sitting posture and strength of a user through the elastic device, the arc-shaped supporting piece better fits the natural curve of the waist of the human body, effective supporting is provided, and the pressure borne by the waist in the long-time sitting posture is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a backrest lumbar support. Background Art

[0002] At present, most of the skeleton lumbar supports on the market adopt the form of a skeleton plus a fabric. By using the rigidity of the skeleton and the elasticity of the fabric, a certain supporting effect is provided for the user. However, for a lumbar support with such a simple fixing method, it is very difficult to effectively support the user and cannot relieve driving fatigue. Most of such products on the market use a horizontal elastic strap for fixing. Not only is it not beautiful, but it also cannot firmly fix the main body of the lumbar support. When the user moves, its position will also move, changing the adjusted use position of the user. Summary of the Invention

[0003] In order to overcome the defects in the above-mentioned prior art, a backrest lumbar support with supportiveness and comfort is provided.

[0004] The technical solution of the utility model is as follows: A backrest lumbar support includes a fixing member, an elastic device and an arc-shaped support member; the arc-shaped support member is connected to the fixing member through the elastic device; one side of the fixing member is provided with an installation portion and at least two elastic connection portions, and the two elastic connection portions are symmetrically arranged on both sides of the installation portion; a plurality of first fixing grooves are provided on the elastic connection portion, and a plurality of second fixing grooves corresponding to the plurality of first fixing grooves are provided on the arc-shaped support member; both ends of the elastic device are fitted in the first fixing groove and the second fixing groove, and the elastic device enables the backrest lumbar support to be finely adjusted according to the sitting posture and strength of the user, making the arc-shaped support member more conform to the natural curve of the human waist, providing effective support and reducing the pressure on the waist under a long-term sitting posture.

[0005] Preferably, mounting holes are provided in both the first fixing groove and the second fixing groove; the elastic device is fixed by screws passing through the mounting holes. The mounting holes make it more convenient for the operator to install and disassemble, and the screw fixing makes the elastic device more firmly assembled between the first fixing groove and the second fixing groove.

[0006] Preferably, the elastic device includes an elastic member and a connecting plate; the connecting plate is fixed at both ends of the elastic member. The connecting plate serves as a bridge between the elastic member and the first fixing groove and the second fixing groove, ensuring that the elastic member can stably transmit force.

[0007] Preferably, the elastic member is a spring. As a classic elastic element, the spring has excellent elastic recovery ability.

[0008] Preferably, the inner side walls of the first fixing groove and the second fixing groove are both provided with anti-slip structures for fixing the elastic member; the anti-slip structure is a threaded groove. The threaded groove increases the contact area between the inner side wall of the fixing groove and the elastic member and forms a plurality of tiny biting points. These biting points can effectively increase the friction between the two, preventing the elastic member from sliding or shifting under force during use, thus ensuring the stability and support effect of the backrest lumbar support.

[0009] Preferably, a plurality of first fixing grooves are evenly arranged on the elastic connecting portion. This makes the force on the backrest lumbar support more uniform, and the arc-shaped support member can be adjusted from different positions through the elastic device.

[0010] Preferably, the arc-shaped support member is a hollow structure. The hollow structure reduces the overall weight by removing some materials, making the arc-shaped support member lighter. The hollow structure increases the opening area on the surface of the arc-shaped support member, which is beneficial to air circulation and makes the user more comfortable.

[0011] Preferably, the arc-shaped support member is a streamline structure for fitting and supporting the human waist.

[0012] Preferably, in the middle of the end of the fixing member away from the elastic device, there is a connecting structure for detachably mounting on the seat; the detachable connecting structure enables the fixing member to be easily mounted on the seat, and is also convenient for disassembly or replacement when needed, providing more choices and freedoms for the user, and allowing the position and angle of the lumbar support or the support device to be adjusted according to actual needs.

[0013] Preferably, at the end of the fixing member away from the elastic device, there is a protective cover corresponding to the elastic connecting portion, and the size of the protective cover matches the size of the elastic connecting portion; this makes the entire backrest lumbar support more beautiful and safe.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] Through the design of the arc-shaped support member of a backrest lumbar support, it can closely fit the natural curve of the human waist, provide effective support, reduce the pressure on the waist under a long-term sitting posture, and thus effectively relieve waist fatigue and soreness; through the design of the mounting portion and the elastic connecting portion on the fixing member, the lumbar support can be stably mounted on the seat or other supporting surfaces, preventing displacement or slipping during use, and enhancing the stability and safety of use.

[0016] Other features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model with reference to the drawings:

[0018] Figure 1 Schematic installation diagram of a backrest lumbar support of the present utility model;

[0019] Figure 2 Side view schematic of the fixing member of the present utility model Figure 1 ;

[0020] Figure 3 Side view schematic of the fixing member of the present utility model Figure 2 ;

[0021] Figure 4 Schematic installation diagram of the protection cover plate of the present utility model;

[0022] Figure 5 Schematic structural diagram of the elastic device of the present utility model;

[0023] Figure 6 Schematic structural diagram of the arc support member of the present utility model;

[0024] Explanation of reference numerals is as follows:

[0025] Fixing member 1, elastic device 2, arc support member 3, installation part 11, elastic connection part 12, first fixing groove 121, installation hole 121-1, second fixing groove 31, elastic member 21, connecting plate 22, anti-slip structure 211, connection structure 13, protection cover plate 14. Specific implementation manners

[0026] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0027] In the following description, terms such as "inner", "outer", "upper", "lower", "left", "right", etc. indicating orientation or positional relationship are only for the convenience of describing the embodiments 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 should not be construed as a limitation to the present utility model.

[0028] As Figures 1 to 6As shown in the figure, a backrest lumbar support includes a fixing member 1, an elastic device 2, and an arc-shaped support member 3. One side of the fixing member 1 is provided with a mounting portion 11 and at least two elastic connecting portions 12. The two elastic connecting portions 12 are symmetrically arranged on both sides of the mounting portion 11. The elastic connecting portion 12 is provided with a plurality of first fixing grooves 121, and the arc-shaped support member 3 is provided with a plurality of second fixing grooves 31 corresponding to the plurality of first fixing grooves 121. Both ends of the elastic device 2 are fitted into the first fixing grooves 121 and the second fixing grooves 31, and the arc-shaped support member 3 is connected to the fixing member 1 through the elastic device 2.

[0029] Among them, the elastic connecting portions 12 are symmetrically distributed on both sides of the mounting portion 11, enhancing the structural strength of the fixing member 1. The first fixing grooves provide connection points for the elastic device 2, and at least two elastic connecting portions 12 also improve the flexibility of the backrest lumbar support. The arc-shaped support member 3 is adjusted through the corresponding elastic devices 2 on the plurality of elastic connecting portions 12, so that the arc-shaped support member 3 has a certain movement space when subjected to pressure, thereby adapting to the back curves and sitting postures of different users.

[0030] In this embodiment, the corresponding setting of the first fixing grooves 121 and the second fixing grooves 31 enables the elastic device 2 to be accurately positioned between the fixing member 1 and the arc-shaped support member 3, preventing the displacement or distortion of the elastic device 2 during use, thereby ensuring the overall stability of the backrest lumbar support. Moreover, mounting holes 121-1 are provided in both the first fixing grooves 121 and the second fixing grooves 31. The elastic device 2 is fixed by screws passing through the mounting holes 121-1, improving the mounting stability and simplifying the mounting process.

[0031] The elastic device 2 is a key component connecting the fixing member 1 and the arc-shaped support member 3, and it is responsible for providing the necessary elasticity and buffering to reduce the pressure on the back caused by long-term sitting postures. The elastic device 2 includes an elastic member 21 and a connecting plate 22. The connecting plate 22 is fixed at both ends of the elastic member 21. The elastic member 21 can be made of materials such as springs, elastic bands, or memory sponges, depending on design requirements and cost considerations. In this embodiment, the material of the elastic member 21 is preferably a spring. As a classic elastic element, the spring has excellent elastic recovery ability. When subjected to an external force, the spring can deform and store energy. When the external force is removed, the spring can quickly return to its original shape, providing continuous support force for the user.

[0032] Anti-slip structures 211 for fixing the elastic member 21 are provided on the inner side walls of both the first fixing groove 121 and the second fixing groove 31; the anti-slip structure 211 is a threaded groove; the threaded groove increases the contact area between the inner side walls of the first fixing groove 121 and the second fixing groove 31 and the elastic member 21 (such as a spring), and forms a plurality of tiny biting points. These biting points can effectively increase the friction between the two, preventing the elastic member 21 from sliding or shifting due to force during use, thereby ensuring the stability and support effect of the lumbar support.

[0033] Furthermore, the anti-slip design of the threaded groove also helps to reduce wear and damage caused by the sliding of the elastic member 21. Since the elastic member 21 can be stably fixed between the first fixing groove 121 and the second fixing groove 31, unnecessary friction and collision are reduced, thereby extending the service life of the lumbar support.

[0034] A plurality of first fixing grooves 121 are evenly distributed on the elastic connecting portion 12. When the elastic device 2 is stressed, the force will be more evenly distributed to the plurality of first fixing grooves 121, reducing the situation of excessive force on a single point and improving the stability and durability of the entire lumbar support structure.

[0035] The arc-shaped support member 3 is a hollow structure and is a streamline structure for fitting and supporting the human waist; the hollow structure reduces the overall weight by removing some materials, making the arc-shaped support member 3 lighter; the hollow structure can effectively disperse stress, avoiding excessive force on a single point, thereby improving the overall structural strength of the arc-shaped support member 3; the hollow structure increases the opening area on the surface of the arc-shaped support member 3, helping to increase the air circulation on the surface of the support member, improving breathability. Good breathability can reduce the stuffy feeling in the lumbar region and make it more comfortable for long-term use.

[0036] Among them, the installation part 11 is the main part of the fixing member 1 for fixing the backrest lumbar support to a seat or other places that need support. The design of the installation part 11 should consider easy installation and disassembly while ensuring stability. In this example, a connection structure 13 for detachably installing on the seat is provided in the middle of the end of the fixing member 1 far from the elastic device 2.

[0037] A protective cover plate 14 corresponding to the elastic connecting portion 12 is provided at the end of the fixing member 1 far from the elastic device 2. The protective cover plate 14 is snap-fitted on the elastic connecting portion 12. The size of the protective cover plate 14 matches the size of the elastic connecting portion 12. The protective cover plate 14 is used to cover the screw on the mounting hole 121-1, preventing scratches on the operator during installation movement, improving safety, and making the entire backrest lumbar support more beautiful.

[0038] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that the present utility model includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present utility model will be included within the scope of the claims.

Claims

1. A chair back lumbar support, characterized in that: The invention comprises a fixing member (1), an elastic device (2) and an arc-shaped support member (3); the elastic device (2) is assembled between the fixing member (1) and the arc-shaped support member (3); a mounting portion (11) and at least two elastic connecting portions (12) are provided on one side of the fixing member (1), and the two elastic connecting portions (12) are symmetrically arranged on both sides of the mounting portion (11); a plurality of first fixing grooves (121) are provided on the elastic connecting portion (12), and a plurality of second fixing grooves (31) corresponding to the plurality of first fixing grooves (121) are provided on the arc-shaped support member (3); and two ends of the elastic device (2) are embedded in the first fixing grooves (121) and the second fixing grooves (31).

2. The chair back lumbar support according to claim 1, characterized in that: The first fixing groove (121) and the second fixing groove (31) are both provided with mounting holes (121-1); the elastic device (2) is fixed by screws passing through the mounting holes (121-1).

3. The chair back lumbar support according to claim 1, characterized in that: The elastic device (2) comprises an elastic member (21) and a connecting plate (22); the connecting plate (22) is fixed to both ends of the elastic member (21).

4. The chair back lumbar support according to claim 3, characterized in that: The elastic member (21) is a spring.

5. The chair back lumbar support according to claim 2, characterized in that: The inner side walls of the first fixing groove (121) and the second fixing groove (31) are both provided with an anti-slip structure (211) for fixing the elastic member (21); the anti-slip structure (211) is a threaded groove.

6. The chair back lumbar support according to claim 1, characterized in that: The plurality of first fixing grooves (121) are evenly distributed on the elastic connecting portion (12).

7. The chair back lumbar support according to claim 1, characterized in that: The arc-shaped support member (3) is a hollow structure.

8. The chair back lumbar support according to claim 1, characterized in that: The arc-shaped support member (3) is a streamlined structure.

9. The chair back lumbar support according to claim 1, characterized in that: A connecting structure (13) for detachably mounting on a seat is provided at the middle of one end of the fixing member (1) away from the elastic device (2).

10. The chair back lumbar support according to claim 1, characterized in that: An end of the fixing member (1) away from the elastic device (2) is provided with a protective cover plate (14) corresponding to the elastic connecting portion (12).

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