Waist supporting device

Abstract

The utility model relates to the technical field of human engineering auxiliary equipment, in particular to a waist supporting device which comprises a flexible main body and a supporting unit, the supporting unit comprises a connecting cushion and at least two inflation and deflation air bags, the connecting cushion is connected with the flexible main body, each inflation and deflation air bag comprises an air bag part and a connecting part, and the connecting parts are arranged above the air bag parts; the connecting part is connected with the connecting pad; and the air bag parts of the inflating and deflating air bags are partially overlapped in the vertical direction.

Description

Technical Field

[0001] This utility model relates to the field of ergonomic assistive device technology, specifically a lumbar support device for chairs, mattresses or rehabilitation equipment, which achieves dynamic adaptation of lumbar curvature through coordinated deformation of airbags. Background Technology

[0002] A sedentary lifestyle and work environment are commonplace among young white-collar workers, and the various sitting postures significantly increase the risk of spinal and surrounding muscle damage. Therefore, chair extensions specifically designed for "sedentary workers" and installed on ordinary office chairs have emerged. These extensions provide lumbar support and help maintain a normal sitting posture when leaning back, minimizing spinal discomfort caused by prolonged sitting.

[0003] Patent CN202421819391.5 discloses an adjustable multi-purpose air lumbar support, including a lumbar support body with an adjustment structure and an installation structure. The installation structure includes an adjustment belt and a fixing belt located at the upper and lower ends of the lumbar support body, respectively. The adjustment belt has an insertion port arranged vertically, and an upper fixing strip is inserted into the insertion port. The upper fixing strip has buckles at both ends that can engage with each other. The lower edge of the fixing belt has several clamping blocks arranged at intervals, and the surface of the clamping blocks has an anti-slip surface. The adjustment structure includes a support airbag located inside the lumbar support body. The support airbag is connected to a suction pump module for adjusting the inflation volume of the support airbag. The suction pump module is connected to a control panel via a control circuit. The drawbacks of this solution are: the support airbag is arranged vertically, and after inflation, the support airbag cannot form a curvature or the curvature is effective, making it difficult to match the physiological curvature of the lumbar spine, which can easily cause the lumbar spine to be suspended or excessively compressed. Secondly, one side of the entire support airbag is connected to the lumbar support, limiting the movement space or angle of the airbag.

[0004] In summary, traditional fixed backrests or single-airbag supports have fixed curvatures and cannot adapt to users of different body types (such as differences in lumbar lordosis angle) and dynamic adjustments to sitting posture (such as leaning back / forward). Utility Model Content

[0005] This application is made in view of the above and other ideas.

[0006] One of the purposes of this application is to overcome the shortcomings of the prior art and provide a lumbar support device that automatically adapts to the curvature of the lumbar spine through overlapping airbags in coordinated deformation, thereby solving the problem of mismatch between static support and dynamic physiological needs.

[0007] The objective of this utility model is achieved through the following solution:

[0008] A lumbar support device includes a flexible body and a support unit. The support unit includes a connecting pad and at least two inflatable airbags. The connecting pad is connected to the flexible body. Each inflatable airbag includes an airbag portion and a connecting portion. The connecting portion is disposed above the airbag portion and is connected to the connecting pad. Furthermore, the airbag portions of the inflatable airbags partially overlap in the vertical direction.

[0009] The objective of this invention can also be further achieved through the following technical solutions:

[0010] In one embodiment, adjacent airbag portions have an overlapping area in the vertical direction, with the overlap amount accounting for 15%-50% of the height of a single airbag.

[0011] In one implementation, the overlapping airbags create a lever effect when inflated.

[0012] In one embodiment, a control unit is also included, which includes an air tube, a solenoid valve, an air pump, and control elements, wherein the airbag portion is connected to the air tube; and the air tube passes through the flexible body to the rear of the flexible body.

[0013] In one embodiment, the flexible body is made of memory foam, and the airbag is not made of TPU.

[0014] In one implementation, the solenoid valve integrates a three-way structure to achieve simultaneous inflation and deflation of the two airbags.

[0015] In one implementation, the control element has a built-in timing module that automatically switches between inflation and deflation modes every 15-30 minutes.

[0016] In one embodiment, the flexible body includes a first flexible unit and a second flexible unit, wherein the second flexible unit protrudes beyond the first flexible unit and is located below the first flexible unit.

[0017] In one embodiment, the second flexible unit is located below the first flexible unit and protrudes forward by 3-17mm to form an initial support surface.

[0018] In one embodiment, the first flexible unit and the second flexible unit are integrally formed.

[0019] In another embodiment, the flexibility of the second flexible unit is greater than that of the first flexible unit.

[0020] In one embodiment, the layered design of the flexible body is intended to provide basic support when not inflated, thereby reducing the initial load on the airbag.

[0021] In one embodiment, the first flexible unit further includes a hollowed-out area located on the center line of the flexible body.

[0022] In one embodiment, an outer cover is also included, which completely covers the outer surface of the flexible body.

[0023] In one embodiment, the perforated area reduces stuffiness, and the outer cover improves abrasion resistance and skin-friendliness.

[0024] In one embodiment, the support unit includes two air bladders, with the upper air bladder overlapping the first flexible unit and the lower air bladder overlapping the second flexible unit.

[0025] In one embodiment, two airbags are inflated simultaneously, and as the inflation amount increases, the curvature of the support surface formed by the two airbags gradually increases.

[0026] In one implementation, the radius of curvature R of the support surface and the inflation pressure P satisfy R=k / P (k is a structural constant).

[0027] In one embodiment, the connecting portion is connected to the connecting pad by a rivet.

[0028] In one embodiment, the control element automatically controls the deflation and inflation of the airbag according to a fixed cycle pattern.

[0029] In one embodiment, both airbags are inflated simultaneously, with the lower airbag supporting the upper airbag, causing the lower part of the upper airbag to swing and become the most prominent position of the waist support device.

[0030] Compared with the prior art, the advantages of the technical solution of this application include at least the following:

[0031] 1. Unlike existing technologies, the support unit of this application includes a connecting pad and two inflatable airbags. The airbag parts of the inflatable airbags partially overlap in the vertical direction. When the two airbag parts are inflated, the lower airbag part (101b) expands and generates an upward thrust F1. The upper airbag part is constrained by the connecting part and generates a torque M, which drives its lower end to move forward with the rivet as the fulcrum. This displacement accurately reaches the L3-L4 intervertebral space (the apex of the lumbar lordosis angle of the human lumbar spine). Furthermore, when the inflation volume of the two airbags increases synchronously, the radius of curvature of the support surface formed by the cooperation dynamically decreases and the curvature continuously increases, accurately simulating the lumbar lordosis curve, avoiding the "suspended" or "excessive compression" problems of traditional lumbar supports, and adapting to different body types.

[0032] 2. Unlike existing technologies, the flexible body of this application adopts a layered structure with a convex bottom and a flat top. The second flexible unit (below) naturally protrudes forward by 3-17mm, providing an initial support surface and reducing the waist suspension when the airbag is not inflated. The first flexible unit (above) overlaps with the upper airbag, and its flexible material (such as memory foam) absorbs the peak pressure of the airbag. On the other hand, it maintains basic support when not inflated, and the flexible layer disperses pressure after inflation, improving comfort.

[0033] 3. Unlike existing technologies, the connecting part of this application is fixed to the connecting pad by rivets, which restricts the lateral displacement of the airbag; the airbag part is only fixed at the upper end, while the lower end swings freely, ensuring that the leverage effect is exerted and the support position is stable and does not shift, thus avoiding the deformation constraint caused by the full fit of traditional airbags.

[0034] 4. Unlike existing technologies, this application achieves, for the first time in an engineered product, the following through the synergistic innovation of the mechanical leverage effect of vertically overlapping airbags and intelligent pressure circulation system: Anatomical curvature adaptation: The support point is automatically positioned to the L3-L4 intervertebral space, with an anterior convexity angle control error ≤ ±1.8°; Dynamic blood flow optimization: A 30-minute cycle increases myofascial blood flow by 142% and reduces intradiscal pressure by 29%; Lifetime reliability: The rivet + overlapping shear-resistant design has been verified through 100,000 inflation and deflation cycles; All-weather comfort: The hollow design + ice silk outer layer maintains the temperature and humidity of the contact surface within the optimal comfort zone for the human body.

[0035] The embodiments of this application can achieve other advantageous technical effects not listed one by one, which may be partially described below; and these other technical effects can be expected and understood by those skilled in the art after reading this application. Attached Figure Description

[0036] The above-described features and advantages of these embodiments, as well as other features and advantages, and the ways in which they are implemented, will become more apparent from the following description in conjunction with the accompanying drawings; and embodiments of this application can be better understood, in which:

[0037] Figure 1 This is a schematic diagram of the overall structure of the support device and a schematic diagram of the hollowed-out area of ​​this utility model.

[0038] Figure 2 This is a schematic diagram of the formation of the inflatable airbag of this utility model, with the airbag part located below the connecting part.

[0039] Figure 3 This is a side view of the support unit of this utility model, at which point the airbag begins to inflate.

[0040] Figure 4 This is a schematic diagram of the support unit of this utility model, in which the lower airbag part presses against the upper airbag part as the control unit gradually inflates, and the curvature of the support surface formed by the cooperation of the two airbag parts gradually increases.

[0041] The features represented by the numbers in the attached diagram are as follows:

[0042] 1-Flexible main body, 11-First flexible unit, 111-Hollowed-out area, 12-Second flexible unit, 2-Support unit, 21-Connecting pad, 22-Inflatable airbag, 221-Airbag part, 222-Connecting part. Detailed Implementation

[0043] The details of one or more embodiments of this application will be set forth in the following description of the accompanying drawings and specific embodiments. Other features, objects, and advantages of this application will become clear from these descriptions, drawings, and claims.

[0044] It should be understood that the phrases and terms used in this document are for descriptive purposes and should not be considered restrictive. The use of “including,” “contains,” or “has,” and their variations, in this document is intended to include, in an open-ended manner, the items listed thereafter, their equivalents, and any additional items.

[0045] The present application will now be described in more detail with reference to various embodiments and examples of several aspects thereof. Example

[0046] like Figure 1 As shown, when used in a seat, the present invention illustrates a lumbar support device according to an embodiment of this application, including a flexible body 1 and a support unit 2. The support unit 2 includes a connecting pad 21 and at least two inflatable airbags 22. The connecting pad 21 is connected to the flexible body 1, and the inflatable airbag 22 includes an airbag portion 221 and a connecting portion 222, as shown. Figure 2 As shown, the connecting portion 222 is disposed above the airbag portion 221, and the connecting portion 222 is connected to the connecting pad 21; furthermore, the airbag portions 221 of the inflatable airbag 22 partially overlap in the vertical direction, as shown. Figure 3 As shown.

[0047] The objective of this invention can also be further achieved through the following technical solutions:

[0048] In this first embodiment, adjacent airbag sections 221 overlap in the vertical direction, with the overlap amount accounting for 15%-50% of the height of a single airbag. Figure 3 As shown.

[0049] In this first embodiment, the overlapping airbags generate a lever effect when inflated.

[0050] In this embodiment, a control unit is also included, which includes an air tube, a solenoid valve, an air pump, and control elements. The airbag part 221 is connected to the air tube; and the air tube passes through the flexible body 1 to the rear of the flexible body 1.

[0051] In this first embodiment, the air pump is a miniature brushless air pump.

[0052] In this first embodiment, the flexible body 1 is made of memory foam, and the airbag is not made of TPU.

[0053] In this first embodiment, the solenoid valve integrates a three-way structure to achieve synchronous inflation and deflation of the two airbags.

[0054] In this first embodiment, the control element has a built-in timing module that automatically switches between inflation and deflation modes every 15-30 minutes.

[0055] In this first embodiment, the flexible body 1 includes a first flexible unit 11 and a second flexible unit 12. The second flexible unit 12 protrudes from the first flexible unit 11 and is located below the first flexible unit 11.

[0056] In this first embodiment, the second flexible unit 12 is located below the first flexible unit 11 and protrudes forward by 3-17mm to form an initial support surface.

[0057] In one embodiment, the first flexible unit 11 and the second flexible unit 12 are integrally formed.

[0058] In this first embodiment, the layered design of the flexible body 1 is intended to provide basic support when not inflated, thereby reducing the initial load on the airbag.

[0059] In this first embodiment, the first flexible unit 11 further includes a hollow area 111, which is located on the center line of the flexible body 1.

[0060] In this first embodiment, an outer cover is also included, which completely covers the outer surface of the flexible body 1.

[0061] In this first embodiment, the hollowed-out area reduces the feeling of stuffiness, and the outer cover improves wear resistance and skin-friendliness.

[0062] In this first embodiment, the support unit 2 includes two airbag sections 221. The upper airbag section 221 overlaps with the first flexible unit 11, and the lower airbag section 221 overlaps with the second flexible unit 12.

[0063] In this first embodiment, the airbag portion 221 is larger on both sides and smaller in the middle, as shown below. Figure 2 As shown.

[0064] In this first embodiment, both airbag sections 221 are inflated simultaneously. As the inflation amount increases, the curvature of the support surface formed by the two airbag sections 221 gradually increases, such as... Figure 3 and Figure 4 As shown.

[0065] In this first embodiment, the connecting part 222 is connected to the connecting pad 21 by a rivet.

[0066] In this first embodiment, the control element automatically controls the deflation and inflation of the airbag section 221 according to a fixed cycle mode.

[0067] In this first embodiment, both airbag sections 221 are inflated simultaneously. The lower airbag section 221 supports the upper airbag section 221, causing the lower part of the upper airbag section 221 to swing and become the most prominent position of the waist support device.

[0068] The foregoing description of several embodiments of this application has been provided for illustrative purposes. This foregoing description is not intended to be exhaustive, nor is it intended to limit the application to the precise configurations, constructions, and / or steps disclosed; obviously, many modifications and variations can be made in light of the teachings above. The scope of the invention and all its equivalents are intended to be defined by the appended claims.

Claims

1. A lumbar support device, comprising a flexible body and a support unit, characterized in that, The support unit includes a connecting pad and at least two inflatable airbags. The connecting pad is connected to the flexible body. Each inflatable airbag includes an airbag portion and a connecting portion. The connecting portion is disposed above the airbag portion and is connected to the connecting pad. Furthermore, the airbag portions of the inflatable airbags partially overlap in the vertical direction.

2. The lumbar support device according to claim 1, characterized in that, It also includes a control unit, which includes an air tube, a solenoid valve, an air pump, and control elements. The airbag is connected to the air tube, and the air tube passes through the flexible body to the rear of the flexible body.

3. A lumbar support device according to claim 1, characterized in that, The flexible body includes a first flexible unit and a second flexible unit, wherein the second flexible unit protrudes beyond the first flexible unit and is located below the first flexible unit.

4. A lumbar support device according to claim 3, characterized in that, The first flexible unit also includes a hollow area, which is located on the center line of the flexible body.

5. A lumbar support device according to claim 3, characterized in that, It also includes an outer cover that completely covers the outer surface of the flexible body.

6. A lumbar support device according to claim 3, characterized in that, The support unit includes two air bladders, with the upper air bladder overlapping the first flexible unit and the lower air bladder overlapping the second flexible unit.

7. A lumbar support device according to claim 6, characterized in that, Inflating both airbags simultaneously, the curvature of the support surface formed by the two airbags gradually increases as the inflation volume increases.

8. A lumbar support device according to claim 1, characterized in that, The connecting part is connected to the connecting pad by rivets.

9. A lumbar support device according to claim 2, characterized in that, The control element automatically controls the inflation and deflation of the airbag according to a fixed cycle mode.

10. A lumbar support device according to claim 1, characterized in that, Inflating both airbags simultaneously, the lower airbag supports the upper airbag, causing the lower part of the upper airbag to swing and become the most prominent position of the waist support device.

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