A waist support and a seat

Abstract

The present application relates to the field of seat design and manufacturing, in particular to the design of the waist and back of a seat. The above technical purpose of the present application is achieved by the following technical scheme: a waist support with a waist support, a support body in contact with the waist and back of a human body, and an elastic body connected with the waist support, the support body comprising a main support and an auxiliary support rotatably connected with the main support, the auxiliary support being slidably connected with the waist support, the elastic body being connected with the main support and driving the main support to move in the front and back directions. The present application aims to overcome the shortcomings of the prior art and provide a waist support and a seat, the waist support not only effectively supporting the waist and back of a user, but also providing dynamic and changing support effect, improving the comfort of the seat.

Description

Technical Field

[0001] This invention relates to the field of seat design and manufacturing, specifically to the design of the lumbar support system of a seat. Background Technology

[0002] Chairs are a type of furniture widely used in daily life and work, and typically consist of a base, backrest, support structure, armrests, and other components. For example, Chinese patent document CN201620974125.9 discloses a chair that provides support from four positions—back, waist, hips, and armrests—to increase comfort during use.

[0003] During the use of a chair, the contact area between the seat and the lumbar region is large, and this area is a major point of stress. Therefore, the structure of the seat that contacts the lumbar region largely determines the comfort of the chair. To enhance the feeling of resistance to the lumbar region, elastic moving structures are often used in the design of the seat's lumbar support.

[0004] For example, Chinese patent document CN201621312965.5 discloses an automatic retractable lumbar support structure for a chair. A spring connects the lumbar support and the backrest, extending horizontally so that the lumbar support extends forward and closely conforms to the user's lower back under the force of the spring. However, this technical solution also has certain drawbacks: the lumbar support's support effect on the lower back is monotonous and unchanging. In actual use, there are normal working and resting states. In normal working states, the body tends to lean forward, closer to the desk, monitor, etc., while in resting states, the body leans back, further away from the desk, monitor, etc. This type of retractable lumbar support provides the same support mode in both states, which is rather monotonous and cannot provide different support and resistance effects. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lumbar support and a seat. The lumbar support can not only effectively support the user's lower back, but also provide dynamic and variable support, thereby improving seat comfort.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a lumbar support, comprising a back frame, a support body that abuts against the human back and waist, and an elastic body connected to the back frame. The support body comprises a main support and an auxiliary support that is rotatably connected to the main support. The auxiliary support is slidably connected to the back frame. The elastic body is connected to the main support and elastically drives the main support to move in the front-back direction.

[0007] As a preferred embodiment of the present invention, the auxiliary support and the main support are connected by a flipping device. The flipping device includes a connecting arm connected to the main support and a connecting cylinder connected to the auxiliary support. The connecting arm has a through-hole. The flipping device also includes a rotating shaft that passes through the through-hole and is connected to the connecting cylinder.

[0008] As a preferred embodiment of the present invention, there are two auxiliary supports, and the main support is located between the two auxiliary supports.

[0009] As a preferred embodiment of the present invention, the back frame includes a support portion and side extensions located on both sides of the support portion, the elastic body is connected to the support portion, the auxiliary support is slidably connected to the side extensions, and the back frame is arc-shaped with the center of the arc facing forward.

[0010] As a preferred embodiment of the present invention, a sliding pin is installed on the auxiliary support, and a slide rail that cooperates with the sliding pin is provided on the side extension.

[0011] As a preferred embodiment of the present invention, the back frame further includes an upper connecting portion extending in the vertical direction, the upper connecting portion being located directly above the support portion.

[0012] As a preferred embodiment of the present invention, the support portion is provided with a rearwardly protruding rearwardly extending rearwardly at its center position.

[0013] As a preferred embodiment of the present invention, the main support is provided with a forward-protruding front abutment.

[0014] As a preferred embodiment of the present invention, the elastomer is a spring or a cylinder.

[0015] A chair includes the aforementioned lumbar support, and also includes a seat, a backrest, and chair legs, wherein the backrest is connected to the back frame, and the chair legs are connected to the seat.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. Lumbar support not only provides effective support for the user's lower back, but also offers dynamic and varied support, enhancing seat comfort.

[0018] 2. This design adopts a "split-body setting and adjustable support clip" design. When the user is working and leans forward, the entire support body provides a large-area, flat support effect for the user's waist.

[0019] 3. When the user is resting, the backrest provides excellent support and a curved support effect for the lower back, offering strong wrapping comfort.

[0020] 4. Due to the extension distance of the connecting arm, the auxiliary support rotates more smoothly and does not interfere with the main support; and the rotation is more stable, and the flipping device is more secure.

[0021] 5. A rearward-protruding rear section is provided in the middle of the support. The rear section design facilitates the installation of larger elastomers. The protrusion of the rear section can be thickened to ensure better structural support for the elastomer.

[0022] 6. The main back can be connected to different height positions of the upper part, so that the installation height of the entire lumbar support is flexible and adjustable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of Example 1;

[0024] Figure 2 yes Figure 1 A diagram showing another direction;

[0025] Figure 3 yes Figure 2 A diagram showing the backrest after it has been concealed.

[0026] In the diagram: 1. Support body, 11. Main support, 111. Front support, 12. Auxiliary support, 2. Back frame, 21. Support part, 211. Rear support part, 22. Side extension part, 23. Upper connecting part, 3. Elastic body, 31. Cylinder, 32. Spring, 4. Tilting device, 41. Connecting arm, 411. Through-hole, 42. Connecting cylinder, 5. Sliding pin. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0029] Example 1, as Figure 1 As shown, a lumbar support includes a back frame 2, which is a structural frame. Figure 2 As shown, the back frame 2 has an overall arc-shaped design, including a central support 21 and a side extension 22 on each side. The arc-shaped support, consisting of the support 21 and the side extensions 22, faces forward.

[0030] In this case, the user is defined as sitting in a chair, facing forward, with their back facing backward, and their left and right hands pointing to the left and right sides.

[0031] One end of the elastomer 3 is mounted on the support portion 21, and the other end is mounted on the support body 1, providing elasticity to the support body 1. As the support body 1 is the component that directly contacts the lower back of the human body, the elasticity provided by the elastomer 3 is also directly transmitted to the human body through the support body 1. Unlike existing technologies, in this case, the support body 1 is designed with "separate components and adjustable support". Specifically, the support body 1 includes two parts: a main support 11 and an auxiliary support 12. The number of auxiliary supports 12 can be set according to different products. In this embodiment, two auxiliary supports 12 are provided, respectively arranged on both sides of the main support 11.

[0032] The main support 11 and the auxiliary support 12 are rotatably connected, specifically, as follows: Figure 3 As shown, the flipping device 4 includes connecting arms 41. There can be two connecting arms 41, connected to the main support 11, with through-holes 411 extending through each arm. A connecting cylinder 42 is provided on the auxiliary support 12. The user passes a vertically extending pivot through the through-holes 411 and the connecting cylinder 42, allowing the auxiliary support 12 to rotate relative to the main support 11. Due to the extended distance of the connecting arms 41, this rotation method allows the rotating position to be further away from the main support 11, resulting in smoother rotation of the auxiliary support 12 without interference with the main support 11. Furthermore, due to the inherent structure of the connecting arms 41 and their structural cooperation with the connecting cylinder 42, the rotation is more stable, and the flipping device 4 is more robust.

[0033] The auxiliary support 12 is rotatably connected to the main support 11, and slidably connected to the back frame 2. For example... Figure 3 As shown, a sliding pin 5 is installed on the back of the auxiliary support 12, and as... Figure 2 As shown, a slide is provided on the side extension 22, and the sliding pin 5 slides in the slide.

[0034] One end of the elastomer 3 is connected to the support part 21, and the other end is connected to the main support 11.

[0035] When the user is in working mode, i.e., leaning forward, their lower back is facing forward and they are usually sitting upright with their back straight. At this time, the elasticity of the elastic body 3 drives the main support 11 forward, pressing against the user's lower back. Due to the curved design of the back frame 2, the auxiliary supports 12 are positioned slightly forward than the main support 11 in the front-to-back direction. With the main support 11 moving forward, it becomes almost flush with the auxiliary supports 12 on both sides in the front-to-back direction. Therefore, the main support 11 and auxiliary supports 12 can achieve almost a single plane, providing flat and large-area support for the user's lower back, resulting in comfortable support.

[0036] When the user is in rest mode, their body leans back, with their lower back facing backward, often relaxed and in an arc shape. At this time, the elastic body 3 compresses, the main support 11 moves backward, and the auxiliary supports 12 on both sides are positioned further forward in the front-to-back direction. The main support 11 and the two auxiliary supports 12 do not form a flat plane, but rather an arc-shaped arrangement. This arc arrangement provides a wrapping and supportive effect on the waist and abdomen, as well as a lumbar support effect. In this mode, not only the back of the lower back but also the sides of the lower back are supported and supported, resulting in high comfort.

[0037] The implementation of the elastomer 3 can have different specific implementations in different embodiments, such as... Figure 3 As shown, in some product embodiments, this can be achieved solely by installing spring 32, which has the advantages of controllable cost and simple installation. In some product embodiments, it can be achieved using cylinder 31 (the cylinder body is hidden in the diagram). The advantage of cylinder is that the spring force output is uniform and stable, and it is also convenient to lock the position at a specified location using a valve. Figure 2 As shown, a rearward-protruding rearward-facing avoidance part 211 is provided in the middle of the support part 21. It has two functions: firstly, the rearward-facing avoidance design facilitates the installation of the large-volume elastic body 3; secondly, the outward protrusion of the rearward-facing avoidance part 211 can be thickened to ensure better structural support for the elastic body 3.

[0038] An upwardly extending upper connecting part 23 is provided directly above the support part 21. The upper connecting part 23 can be directly connected to components such as the main backrest of the seat. Users can install components such as adjustment ribs or adjustment holes on the upper connecting part 23, so that the main backrest can be connected to different height positions of the upper connecting part 23, thereby making the installation height of the entire lumbar support flexible and adjustable.

[0039] A chair includes the lumbar support described above, and also includes a seat, a backrest, and chair legs, wherein the backrest is connected to a back frame, and the chair legs are connected to the seat.

Claims

1. A waist support comprising a back frame (2), a support body (1) which is in contact with the back of the waist of a human body, and an elastic body (3) which is connected to the back frame (2), characterized in that: The support body (1) comprises a main holder (11) and an auxiliary holder (12) rotatably connected with the main holder (11), the auxiliary holder (12) is slidably connected with the back frame (2), the elastic body (3) is connected with the main holder (11) and drives the main holder (11) to move in the front-back direction, the auxiliary holder (12) is connected with the main holder (11) through a turnover device (4), the turnover device (4) comprises a connecting arm (41) connected with the main holder (11) and a connecting cylinder (42) connected with the auxiliary holder (12), the connecting arm (41) is provided with a through hole (411), the turnover device (4) further comprises a rotating shaft connected with the connecting cylinder (42) through the through hole (411), the auxiliary holder (12) is two, the main holder (11) is located between the two auxiliary holders (12), the back frame (2) comprises a support part (21) and side extension parts (22) located on both sides of the support part (21), the elastic body (3) is connected with the support part (21), the auxiliary holder (12) is slidably connected with the side extension part (22), the back frame (2) is arc-shaped, the center of the arc is in the front direction, the auxiliary holder (12) is provided with a sliding pin (5), the side extension part (22) is provided with a sliding groove matched with the sliding pin (5), and the main holder (11) is provided with a front abutting part (111) protruding in the front direction.

2. A waist support according to claim 1, wherein: The back frame (2) further comprises an upper connecting part (23) extending in the vertical direction, and the upper connecting part (23) is located directly above the support part (21).

3. The waist support of claim 1, wherein: A rear avoiding part (211) protruding in the rear direction is arranged at the center of the support part (21).

4. The waist support of claim 1, wherein: The elastic body (3) is a spring (32) or a gas cylinder (31).

5. A seat, characterized by The waist support further comprises a seat, a main back and a chair leg, the main back is connected with the back frame (2), and the chair leg is connected with the seat.

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