Lifting device and bed

Abstract

The utility model discloses bedclothes technical field, especially lift device, lift device includes upper support plate, lower support plate and air bag subassembly, along the first direction, lower support plate and upper support plate are opposite and are arranged, and the support space is defined between upper support plate and lower support plate, along the first direction, air bag subassembly is located between lower support plate and upper support plate, and air bag subassembly includes air bag, and the air bag includes opposite first connecting surface and second connecting surface, and the middle part of first connecting surface is provided with first connecting part, and the middle part of second connecting surface is provided with second connecting part, and first connecting part is fixedly connected in upper support plate, and second connecting part is fixedly connected in lower support plate. Through above -mentioned mode, the utility model discloses embodiment can reduce the risk of air bag side slip.

Description

Technical Field

[0001] This utility model relates to the field of bedding technology, and in particular to a lifting device and a bed. Background Technology

[0002] Modern beds often have airbags that support the body. The height of the bed can be adjusted by inflating and deflating the airbags, thereby adjusting the sleeping posture.

[0003] In the process of realizing this utility model, the inventors discovered that during the inflation process, the airbag may tip over, thus failing to provide stable support. Utility Model Content

[0004] This invention provides a lifting device and a bed that can reduce the risk of airbag rollover.

[0005] To solve the above-mentioned technical problems, the present invention provides a lifting device, which includes an upper support plate, a lower support plate, and an airbag assembly. Along a first direction, the lower support plate and the upper support plate are arranged opposite to each other, defining a support space between them. Along the first direction, the airbag assembly is located between the lower support plate and the upper support plate. The airbag assembly includes an airbag, which includes opposing first and second connecting surfaces. A first connecting portion is provided in the middle of the first connecting surface, and a second connecting portion is provided in the middle of the second connecting surface. The first connecting portion is fixedly connected to the upper support plate, and the second connecting portion is fixedly connected to the lower support plate.

[0006] Optionally, the airbag assembly includes two airbags disposed opposite each other along a second direction, the two airbags being a first airbag and a second airbag, respectively. Along the second direction, the upper support plate has a first upper edge and a second upper edge opposite each other, and the lower support plate has a first lower edge and a second lower edge; the first connecting portion of the first airbag is connected to the first upper edge of the upper support plate, the first connecting portion of the second airbag is connected to the second upper edge of the upper support plate, the second connecting portion of the first airbag is connected to the first lower edge of the lower support plate, and the second connecting portion of the second airbag is connected to the second lower edge of the lower support plate; wherein, the second direction is perpendicular to the first direction.

[0007] Optionally, the number of first airbags and second airbags is at least two, with at least two first airbags spaced apart along a third direction and at least two second airbags spaced apart along a third direction, and along a second direction, a first airbag and a second airbag are positioned opposite each other.

[0008] Optionally, a first noise reduction layer is provided on the surface of the support plate facing upwards and / or on the surface of the support plate facing downwards.

[0009] Optionally, the surface of the upper support plate facing the airbag is provided with a second noise reduction layer; the surface of the lower support plate facing the airbag is provided with a third noise reduction layer.

[0010] Optionally, the first noise reduction layer, the second noise reduction layer, the third noise reduction layer and the fourth noise reduction layer are rough surfaces with several protrusions.

[0011] Optionally, the airbag is provided with a first flexible connector, one end of which is disposed at a first connecting portion and the other end of which is connected to an upper support plate; and / or, the airbag is provided with a second flexible connector, one end of which is disposed at a second connecting portion and the other end of which is connected to a lower support plate.

[0012] Optionally, the lifting device also includes a base, the base being provided along the receiving groove, a lower support plate being provided at the bottom of the receiving groove, and an upper support plate being provided at the end of the receiving groove away from the bottom of the groove; along the first direction, the edge of the projection of the upper support plate is spaced apart from the edge of the projection of the receiving groove.

[0013] Optionally, along the first direction, at least a portion of the edge of the projection of the lower support plate coincides with the edge of the projection of the receiving groove, so that the groove wall of the receiving groove restricts the movement of the lower support plate.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide a bed, including a lifting device as described in any of the above embodiments.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, this utility model embodiment provides a lifting device, which includes an upper support plate, a lower support plate, and an airbag assembly. Along a first direction, the lower support plate and the upper support plate are arranged opposite to each other, defining a support space between them. Along the first direction, the airbag assembly is located between the lower support plate and the upper support plate. The airbag assembly includes an airbag, which includes opposing first and second connecting surfaces. A first connecting portion is provided in the middle of the first connecting surface, and a second connecting portion is provided in the middle of the second connecting surface. The first connecting portion is fixedly connected to the upper support plate, and the second connecting portion is fixedly connected to the lower support plate. Through the above arrangement, the airbag is supported between the upper and lower support plates. The first connecting portion is pressed by the upper support plate, and the second connecting portion is pressed by the lower support plate. The pressure direction of the first connecting portion is perpendicular to the plane of the upper support plate, and the pressure direction of the second connecting portion is perpendicular to the plane of the lower support plate. This reduces the risk of the pressure direction of the first connecting portion deviating from the first direction, thereby reducing the risk of the airbag tipping over. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is a perspective view of the lifting device according to an embodiment of the present utility model; Figure 2 This is an exploded view of the lifting device according to an embodiment of the present invention; Figure 3 This is a projection view of the lifting device according to an embodiment of the present invention along the first direction; Figure 4 This is a schematic diagram of the lifting device in an embodiment of the present invention during venting; Figure 5 This is a schematic diagram of the lifting device of this utility model during inflation; Figure 6 This is a schematic diagram of the air passage assembly according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Lifting device; 100. Upper support plate; 101. First snap-fit ​​part; 110. First upper edge; 120. Second upper edge; 200. Lower support plate; 201. Second snap-fit ​​part; 210. First lower edge; 220. Second lower edge; 300, Airbag assembly; 301, First airbag; 302, Second airbag; 310, Airbag; 311, First connecting surface; 3111, First connecting portion; 312, Second connecting surface; 3121, Second connecting portion; 313, First flexible connector; 3131, Third snap-fit ​​portion; 314, Second flexible connector; 3141, Fourth snap-fit ​​portion; 315, Airbag body unit; 400. Base; 410. Receiving slot; 500, Gas circuit assembly; 510, First branch pipe; 520, Second branch pipe; 530, Main pipe. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figure 1 and Figure 2 The lifting device 1 includes an upper support plate 100, a lower support plate 200, an airbag assembly 300, and a base 400. The airbag assembly 300 is disposed between the upper support plate 100 and the lower support plate 200. When the airbag 310 is inflated, it forces the upper support plate 100 and the lower support plate 200 away from each other, and the airbag 310 is supported between the upper support plate 100 and the lower support plate 200. When the airbag 310 is deflated, it is compressed by the upper support plate 100 and the lower support plate 200, allowing the upper support plate 100 and the lower support plate 200 to move closer together. The upper support plate 100, the lower support plate 200, and the airbag assembly 300 are all disposed within the base 400. The lower support plate 200 is disposed within the base 400 and is fixed relative to the base 400. The upper support plate 100 can move relative to the base 400. Thus, by inflating or deflating the airbag assembly 300, the upper support plate 100 can be moved, thereby enabling the upper support plate 100 to play a lifting role.

[0022] For ease of understanding, the direction is defined as follows: The first direction is the expansion direction of the airbag assembly 300, which is also the movement direction of the upper support plate 100. The first, second, and third directions are perpendicular to each other. It should be noted that when the lifting device 1 is installed on the bed, the lower support plate 200 is fixed to the bed, the first direction matches the height direction of the bed, the second direction matches the length direction of the bed, and the third direction matches the width direction of the bed.

[0023] For the aforementioned upper support plate 100, please refer to... Figure 2The plane of the upper support plate 100 is perpendicular to the first direction. The upper support plate 100 includes a first upper edge 110 and a second upper edge 120 arranged opposite to each other along the second direction. Both the first upper edge 110 and the second upper edge 120 are provided with a first snap-fit ​​portion 101.

[0024] For the lower support plate 200 mentioned above, please refer to... Figure 2 The plane of the lower support plate 200 is perpendicular to the first direction. The upper support plate 100 and the lower support plate 200 are arranged opposite to each other, defining a support space between them. The lower support plate 200 includes a first lower edge 210 and a second lower edge 220 arranged opposite to each other along the second direction. Both the first lower edge 210 and the second lower edge 220 are provided with a second snap-fit ​​portion 201.

[0025] For the aforementioned base 400, please refer to... Figure 2 and Figure 3 The base 400 is provided with a receiving groove 410, the depth direction of which is parallel to the first direction. Both the upper support plate 100 and the lower support plate 200 are disposed within the receiving groove 410. The lower support plate 200 is disposed at the bottom of the receiving groove 410, and the upper support plate 100 is disposed within the receiving groove 410 but located at the end furthest from the bottom of the receiving groove 410. Thus, the inflation and deflation of the airbag 310 occur within the receiving groove 410, ensuring that the groove wall of the receiving groove 410 can limit the extreme position of the airbag 310's displacement in a direction perpendicular to the first direction, thereby reducing the risk of the airbag 310 tipping over.

[0026] Optionally, along the first direction, the edge of the projection of the upper support plate 100 is spaced apart from the edge of the projection of the receiving groove 410. In this way, during the inflation of the airbag 310, the risk of friction between the airbag 310 and the groove wall of the receiving groove 410 is reduced, which not only reduces the risk of the airbag 310 being stuck by the base 400, but also reduces noise.

[0027] Optionally, along the first direction, at least a portion of the edge of the projection of the lower support plate 200 coincides with the edge of the projection of the receiving groove 410, so that the groove wall of the receiving groove 410 restricts the movement of the lower support plate 200 in a direction perpendicular to the first direction, thereby improving the stability of the airbag 310 movement. Furthermore, the above-mentioned limiting method has a simple structure, requires no additional limiting structures, is easy to assemble and disassemble, and has low cost. In some further embodiments, along the first direction, the edge of the projection of the lower support plate 200 coincides with the edge of the projection of the receiving groove 410.

[0028] For the airbag assembly 300 mentioned above, please refer to... Figure 2 and combined Figure 4 and Figure 5Along the first direction, the airbag assembly 300 is located in the limiting space. The airbag assembly 300 includes an airbag 310, which includes a first connecting surface 311 and a second connecting surface 312 disposed opposite to each other. The inflation direction of the airbag 310 is from the first connecting surface 311 to the second connecting surface 312. A first connecting portion 3111 is provided at the middle of the first connecting surface 311, and a second connecting portion 3121 is provided at the middle of the second connecting surface 312. The first connecting surface 311 is disposed opposite to the upper support plate 100, and the first connecting portion 3111 is fixedly connected to the upper support plate 100. The second connecting surface 312 is disposed opposite to the lower support plate 200, and the second connecting portion 3121 is fixedly connected to the lower support plate 200. This ensures that the inflation direction of the airbag 310 is consistent with the first direction, thereby supporting the airbag 310 between the upper support plate 100 and the lower support plate 200 along the first direction. Optionally, the airbag 310 includes a plurality of airbag units 315, which are stacked along a first direction and adjacent airbag units 315 are connected.

[0029] The technical effects and working principles of the first connecting part 3111 and the second connecting part 3121 are similar. To facilitate understanding of the inventive concept of this application, the working principle is explained using the first connecting part 3111 as an example: After the airbag 310 is inflated, the first connecting surface 311 is a convex surface that protrudes in a direction away from the second connecting surface 312. The first connecting part 3111 has the highest degree of protrusion. When the upper support plate 100 abuts against the airbag 310, the more the pressure point of the first connecting surface 311 deviates from the first connecting part 3111, the more the direction of force on the first connecting surface 311 deviates from the first direction, thus making the airbag 310 more prone to rollover. In this application, the first connecting part 3111 of the first connecting surface 311 is fixedly connected to the upper support plate 100. After the airbag 310 is inflated, the first connecting part 3111 of the first connecting surface 311 is compressed, reducing the risk that the direction of force on the first connecting surface 311 deviates from the first direction, thereby reducing the risk of the airbag 310 rolling over.

[0030] Based on the foregoing, this application does not limit the shape and size of the first connecting part 3111 and the second connecting part 3121. As long as the first connecting part 3111 protrudes to the maximum height in the first connecting surface 311 along the direction parallel to the first direction and away from the second connecting surface 312 after the airbag 310 is inflated, and the second connecting part 3121 protrudes to the maximum height in the second connecting surface 312 along the direction parallel to the first direction and away from the first connecting surface 311, it is acceptable.

[0031] For example, the first connecting portion 3111 is a linear region disposed along a third direction, and the first connecting portion 3111 passes through the geometric center of the first connecting surface 311. Both ends of the first connecting portion 3111 may extend to the edge of the first connecting surface 311, or both ends of the first connecting portion 3111 may be spaced apart from the edge of the first connecting surface 311. In some other embodiments, the shape of the first connecting portion 3111 is similar to the shape of the first connecting surface 311, and the geometric center of the first connecting portion 3111 coincides with the geometric center of the first connecting surface 311.

[0032] It is understandable that the greater the distance between the line of pressure exerted by the upper support plate 100 on the airbag 310 and the line of pressure exerted by the lower support plate 200 on the airbag 310, the more prone the airbag 310 is to roll over. Based on this, after inflation, the first connecting portion 3111 and the second connecting portion 3121 of this application are aligned along the first direction, thereby reducing the risk of the airbag 310 rolling over. Optionally, along the first direction, the projections of the first connecting portion 3111 and the second connecting portion 3121 coincide.

[0033] It should be noted that only the first connecting part 3111 of the first connecting surface 311 is fixedly connected to the upper support plate 100, and only the second connecting part 3121 of the second connecting surface 312 is fixedly connected to the lower support plate 200. That is, the parts of the first connecting surface 311 other than the first connecting part 3111 can move relative to the upper support plate 100, and the parts of the second connecting surface 312 other than the second connecting part 3121 can move relative to the lower support plate 200. Taking the upper support plate 100 as an example, when the movement of the upper support plate 100 and the first connecting surface 311 is asynchronous, the parts of the first connecting surface 311 other than the first connecting part 3111 can adapt to the asynchronous movement by moving relative to the upper support plate 100, reducing the risk of direct pulling between the first connecting surface 311 and the upper support plate 100, thereby preventing damage to the upper support plate 100 and the airbag 310.

[0034] In some embodiments, a first noise-reducing layer is provided on both the surface of the airbag 310 facing the upper support plate 100 and the surface facing the lower support plate 200. A second noise-reducing layer is provided on both the surface of the upper support plate 100 facing the airbag 310 and the surface facing the airbag 310. A third noise-reducing layer is provided on both the surface of the lower support plate 200 facing the airbag 310 and the surface facing the airbag 310. The first, second, third, and fourth noise-reducing layers have rough surfaces. Thus, taking the first noise-reducing layer as an example, the portion of the first surface other than the first connecting portion 3111 is highly likely to come into contact with the upper support plate 100, resulting in adhesion. During the inflation or deflation of the airbag 310, the adhered first connecting portion 3111 and the upper support plate 100 will generate noise when they separate. The first noise reduction layer allows the airbag 310 to abut against the upper support plate 100 through the rough surface of the first noise reduction layer, thereby preventing the airbag 310 from sticking to the upper support plate 100, thus reducing noise and improving the user experience.

[0035] It should be noted that this application does not limit the material or arrangement of the first, second, and third noise-reducing layers, as long as they can prevent adhesion. As an example, the outer surfaces of the first, second, and third noise-reducing layers can all be frosted or other rough surfaces. Alternatively, the first, second, and third noise-reducing layers can also be non-woven fabric or other materials. Optionally, the first noise-reducing layer covers the outer surface of the airbag 310, the second noise-reducing layer covers the outer surface of the upper support plate 100, and the third noise-reducing layer covers the outer surface of the lower support plate 200.

[0036] In some embodiments, the airbag assembly 300 includes a plurality of airbags 310, which together bear the pressure of the upper support plate 100, thereby enabling the upper support plate 100 to be stably supported. As an example, the airbag assembly 300 includes two airbags 310, namely a first airbag 301 and a second airbag 302. The first airbag 301 and the second airbag 302 are arranged opposite each other along a second direction. When the user's head is positioned above the lifting device 1, by inflating or deflating the first airbag 301 and the second airbag 302 respectively, a height difference can be created in the lifting device 1 in the second direction, thereby causing the upper support plate 100 to tilt. Thus, when the lifting device 1 is applied to a bed, the tilt angle of the user's head can be adjusted.

[0037] For example, there are at least two first airbags 301 and at least two second airbags 302. At least two first airbags 301 are spaced apart along a third direction, and at least two second airbags 302 are spaced apart along a third direction. In the second direction, a first airbag 301 and a second airbag 302 are arranged opposite each other. By inflating or deflating the different airbags 310 in the third direction, a height difference can be created in the lifting device 1 in the third direction, thereby tilting the upper support plate 100 and adjusting the angle at which the user's head turns to the left or right, so as to adjust the user's airway to be unobstructed when the user snores.

[0038] In some embodiments, the airbag 310 is provided with a first flexible connector 313 and a second flexible connector 314. One end of the first flexible connector 313 is disposed at the first connecting portion 3111, and the other end of the first flexible connector 313 is connected to the upper support plate 100. One end of the second flexible connector 314 is disposed at the second connecting portion 3121, and the other end of the second flexible connector 314 is connected to the lower support plate 200. The provision of the first flexible connector 313 allows the first connecting portion 3111 to move relative to the upper support plate 100, thereby accommodating asynchronous movements between the first connecting portion 3111 and the upper support plate 100, and reducing the risk of pulling between the first connecting portion 3111 and the upper support plate 100. The technical effect of the second flexible connector 314 is similar to that of the first flexible connector 313, and will not be described in detail here.

[0039] Furthermore, the first flexible connector 313 has a third engaging portion 3131 at its end away from the first connecting portion 3111, and the second flexible connector 314 has a fourth engaging portion 3141 at its end away from the second connecting portion 3121. The third engaging portion 3131 of the first flexible connector 313 of the first airbag 301 engages with the first engaging portion 101 of the first upper edge 110, and the fourth engaging portion 3141 of the second flexible connector 314 of the first airbag 301 engages with the second engaging portion 201 of the first lower edge 210. The third engaging portion 3131 of the first flexible connector 313 of the second airbag 302 engages with the first engaging portion 101 of the second upper edge 120, and the fourth engaging portion 3141 of the second flexible connector 314 of the second airbag 302 engages with the second engaging portion 201 of the second lower edge 220. With the above settings, the first flexible connector 313 and the second flexible connector 314 can be disassembled and assembled at the edge of the upper support plate 100 or the lower support plate 200, which facilitates the disassembly and assembly of the airbag 310.

[0040] Optionally, multiple first latching portions 101, second latching portions 201, third latching portions 3131, and fourth latching portions 3141 are provided along a third direction. Each third latching portion 3131 is connected to a corresponding first latching portion 101, and each fourth latching portion 3141 is connected to a corresponding first latching portion 101. In this way, the airbag 310 is securely connected to the upper support plate 100 and the lower support plate 200, respectively.

[0041] Please see Figure 2 and Figure 6 The lifting device 1 also includes an air circuit assembly 500, which includes a main pipe 530, a first branch pipe 510, and a second branch pipe 520. One end of the first branch pipe 510 is connected to the first airbag 301, and one end of the second branch pipe 520 is connected to the second airbag 302. The other ends of both the first branch pipe 510 and the second branch pipe 520 are connected to one end of the main pipe 530, thus allowing air to be supplied to the first airbag 301 and the second airbag 302 through the same air source. Furthermore, the line containing the first branch pipe 510 is inclined to the line containing the second branch pipe 520. Therefore, since the first airbag 301 and the second airbag 302 will move slightly during inflation or deflation, the other ends of the first branch pipe 510 and the second branch pipe 520 will be subjected to forces respectively. When the first branch pipe 510 and the second branch pipe 520 are aligned, the other end of the first airbag 301 may be subjected to a force along the length of the first branch pipe 510, and the other end of the second airbag 302 may be subjected to a force along the length of the second branch pipe 520, making the first branch pipe 510 and the second branch pipe 520 susceptible to damage due to compression or stretching. However, in this embodiment of the invention, even if the forces on the other end of the first branch pipe 510 and the other end of the second branch pipe 520 are aligned, because the first branch pipe 510 and the second branch pipe 520 are not aligned, they can bend and deform, reducing the risk of compression or stretching and thus improving their service life.

[0042] Optionally, the first branch pipe 510, the second branch pipe 520, and the main pipe 530 form a Y-shaped pipe, with an acute angle between the first branch pipe 510 and the second branch pipe 520. This allows the gas to flow smoothly from the main pipe 530 to the first branch pipe 510 and the second branch pipe 520, thereby reducing turbulence and eddies. Furthermore, the aforementioned Y-shaped pipe produces less noise during operation, resulting in a better user experience. In addition, the more balanced flow distribution between the first branch pipe 510 and the second branch pipe 520 helps ensure the synchronous expansion of the first airbag 301 and the second airbag 302, thus achieving synchronous raising and lowering of the first airbag 301 and the second airbag 302.

[0043] It should be noted that the angle between the first branch pipe 510 and the second branch pipe 520 is the angle between the straight line containing the two ends of the first branch pipe 510 and the straight line containing the two ends of the second branch pipe 520.

[0044] Furthermore, the first branch pipe 510 and the second branch pipe 520 are symmetrically arranged about the main pipe 530, the inner cross-sectional areas of the first branch pipe 510 and the second branch pipe 520 are the same, and the lengths of the first branch pipe 510 and the second branch pipe 520 are the same, thereby further balancing the flow distribution between the first branch pipe 510 and the second branch pipe 520.

[0045] In some embodiments, the first branch pipe 510 and the second branch pipe 520 have elastic deformation properties, so that the first branch pipe 510 and the second branch pipe 520 can undergo bending deformation, thereby reducing the risk of damage to the first branch pipe 510 and the second branch pipe 520 due to bending deformation. When the first airbag 301 and the second airbag 302 are inflated and deflated, the included angle between the first branch pipe 510 and the second branch pipe 520 can change with the bending of the first branch pipe 510 and the second branch pipe 520 due to the action of the first airbag 301 and the second airbag 302.

[0046] For ease of understanding, the bladder units 315 of the first airbag 301 are sequentially connected to form the first airbag, and the bladder units 315 of the second airbag 302 are sequentially connected to form the second airbag. The first airbag 301 also includes a first airway interface (not shown), which communicates with the first airbag. The first airway interface has elastic deformation properties and is connected to one end of the first branch tube 510. The second airbag 302 also includes a second airway interface (not shown), which communicates with the second airbag. The second airway interface has elastic deformation properties and is connected to one end of the second branch tube 520. The provision of the first and second airway interfaces facilitates bending deformation of the first and second branch tubes 510 and 520, while also reducing the risk of damage at the connection points between the first branch tube 510 and the first airbag 301, and between the second branch tube 520 and the second airbag 302.

[0047] Optionally, the first airway interface is located on the side of the first airbag 301 facing the second airbag 302, and the second airway interface is located on the side of the second airbag 302 facing the first airbag 301. The first branch pipe 510, the second branch pipe 520, and the main pipe 530 are located between the first airbag 301 and the second airbag 302, thus making the structure compact. The first airway interface and the second airway interface are arranged opposite each other, which is conducive to the uniform expansion of the first airbag 301 and the second airbag 302.

[0048] Furthermore, the first airway interface is inclined relative to the first airbag body, and the first airway interface and the first branch tube 510 are aligned in a straight line. The second airway interface is inclined relative to the second airbag body, and the second airway interface and the second branch tube 520 are aligned in a straight line. This avoids stress concentration at the connection between the first branch tube 510 and the first airbag 301, thereby reducing the risk of damage. It should be noted that, based on the fact that the first airbag 301 and the second airbag 302 are arranged opposite each other along a second direction, there is a high risk of the first airbag 301 and the second airbag 302 shifting along the second direction during inflation or deflation. The first airway interface being inclined relative to the first airbag body means that the length direction of the first airway interface is inclined in the second direction; the second airway interface being inclined relative to the second airbag body means that the second airway interface is inclined in the second direction.

[0049] In this embodiment of the present invention, the lifting device 1 includes an upper support plate 100, a lower support plate 200, and an airbag assembly 300. Along a first direction, the lower support plate 200 and the upper support plate 100 are arranged opposite to each other, and a support space is defined between the upper support plate 100 and the lower support plate 200. Along the first direction, the airbag assembly 300 is located between the lower support plate 200 and the upper support plate 100. The airbag assembly 300 includes an airbag 310, which includes a first connecting surface 311 and a second connecting surface 312 opposite to each other. A first connecting portion 3111 is provided in the middle of the first connecting surface 311, and a second connecting portion 3121 is provided in the middle of the second connecting surface 312. The first connecting portion 3111 is fixedly connected to the upper support plate 100, and the second connecting portion 3121 is fixedly connected to the lower support plate 200. With the above configuration, the airbag 310 is supported between the upper support plate 100 and the lower support plate 200. The first connecting part 3111 is pressed by the upper support plate 100, and the second connecting part 3121 is pressed by the lower support plate 200. The pressure direction of the first connecting part 3111 is perpendicular to the plane of the upper support plate 100, and the pressure direction of the second connecting part 3121 is perpendicular to the plane of the lower support plate 200. This reduces the risk that the pressure direction of the first connecting part 3111 deviates from the first direction, thereby reducing the risk of the airbag 310 overturning.

[0050] This utility model provides an embodiment of a bed, which includes the lifting device 1 described above. The structure and function of the lifting device 1 can be found in the above embodiment, and will not be repeated here.

[0051] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A lifting device, characterized in that, Includes upper support plate, lower support plate and airbag assembly; Along the first direction, the lower support plate and the upper support plate are arranged opposite to each other, and a support space is defined between the upper support plate and the lower support plate; Along the first direction, the airbag assembly is located between the lower support plate and the upper support plate. The airbag assembly includes an airbag, which includes a first connecting surface and a second connecting surface opposite each other. A first connecting portion is provided in the middle of the first connecting surface, and a second connecting portion is provided in the middle of the second connecting surface. The first connecting portion is fixedly connected to the upper support plate, and the second connecting portion is fixedly connected to the lower support plate.

2. The lifting device according to claim 1, characterized in that, The airbag assembly includes two airbags arranged opposite each other along a second direction, the two airbags being a first airbag and a second airbag, and along the second direction, the upper support plate has a first upper edge and a second upper edge opposite each other, and the lower support plate has a first lower edge and a second lower edge; The first connecting part of the first airbag is connected to the first upper edge of the upper support plate, the first connecting part of the second airbag is connected to the second upper edge of the upper support plate, the second connecting part of the first airbag is connected to the first lower edge of the lower support plate, and the second connecting part of the second airbag is connected to the second lower edge of the lower support plate. The second direction is perpendicular to the first direction.

3. The lifting device according to claim 2, characterized in that, The number of the first airbag and the second airbag is at least two, the at least two first airbags are spaced apart along a third direction, the at least two second airbags are spaced apart along a third direction, and along the second direction, a first airbag and a second airbag are positioned opposite each other.

4. The lifting device according to claim 1, characterized in that, The surface of the airbag facing the upper support plate, and / or the surface of the airbag facing the lower support plate, is provided with a first noise reduction layer.

5. The lifting device according to claim 4, characterized in that, The upper support plate faces the surface of the airbag, and / or the upper support plate faces the surface of the airbag and is provided with a second noise reduction layer; The lower support plate has a surface facing the airbag, and / or the lower support plate has a third noise reduction layer on the surface facing the airbag.

6. The lifting device according to claim 5, characterized in that, The first noise reduction layer, the second noise reduction layer, the third noise reduction layer and the fourth noise reduction layer have rough surfaces.

7. The lifting device according to any one of claims 1-6, characterized in that, The airbag is provided with a first flexible connector, one end of which is disposed at the first connecting portion, and the other end of which is connected to the upper support plate; and / or The airbag is provided with a second flexible connector, one end of which is disposed at the second connecting part, and the other end of which is connected to the lower support plate.

8. The lifting device according to any one of claims 1-6, characterized in that, The lifting device also includes a base, the base being provided with a receiving groove, the lower support plate being disposed at the bottom of the receiving groove, and the upper support plate being disposed at the end of the receiving groove away from the bottom of the groove; Along the first direction, the edge of the projection of the upper support plate is spaced apart from the edge of the projection of the receiving groove.

9. The lifting device according to claim 8, characterized in that, Along the first direction, at least a portion of the edge of the projection of the lower support plate coincides with the edge of the projection of the receiving groove, so that the groove wall of the receiving groove restricts the movement of the lower support plate.

10. A bed, characterized in that, Includes the lifting device as described in any one of claims 1-9.

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