Air bag, bandage assembly and wearable equipment

Abstract

The utility model provides an air bag, a bandage assembly and wearable equipment. A cavity is defined by the air bag, and the air bag is provided with a first edge sealing area; the side, close to the cavity, of the first edge sealing area forms part of the inner wall of the air bag, and the side, away from the cavity, of the first edge sealing area forms part of the outer wall of the air bag. Through the arrangement, the first edge sealing area can serve as a part of the cavity defined by the air bag, so that effective utilization of the first edge sealing area is achieved, the effective compression area of the air bag is enlarged, and the compression effect of the air bag is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wearable devices, and in particular to an airbag, a strap assembly and a wearable device. Background Art

[0002] As people's quality of life continues to improve, more and more people begin to pay attention to personal health. Taking blood pressure detection as an example, in order to improve the convenience of blood pressure detection for users, some smart watches are equipped with airbags and detection modules, which use the expansion of the airbag to compress the user's wrist and cooperate with the detection module to measure the user's blood pressure. However, since the airbag is generally formed by hot pressing two layers of sheet material, there is often an edge seal caused by hot pressing at the edge of the airbag, which not only occupies part of the area of ​​the airbag, but also fails to bring a positive effect to the pressure of the airbag on the user's wrist. Utility Model Content

[0003] On the one hand, the present application provides an airbag, which is surrounded by a cavity and has a first edge-sealed area; wherein a side of the first edge-sealed area close to the cavity constitutes a portion of the inner wall of the airbag, and a side of the first edge-sealed area away from the cavity constitutes a portion of the outer wall of the airbag.

[0004] On the other hand, the present application provides a strap assembly, which includes: a strap and the above-mentioned airbag, and the strap is connected to the airbag.

[0005] The present application also provides a wearable device, which includes: a shell component and the above-mentioned strap component; the strap is connected to the shell component and can be together with the shell component to form a wearing space; the airbag is connected to one side of the strap located in the wearing space.

[0006] The airbag provided by the present application is provided with a first edge-sealed area, and the side of the first edge-sealed area close to the airbag cavity constitutes part of the inner wall of the airbag, and the side of the first edge-sealed area away from the cavity constitutes part of the outer wall of the airbag, so that the first edge-sealed area can be used as a part of the cavity formed by the airbag. In this way, the airbag provided by the present application can realize the effective use of the first edge-sealed area to expand the effective compression area of ​​the airbag, thereby improving the compression effect of the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 is a schematic diagram of the structure of a wearable device 10 provided in an embodiment of the present application;

[0009] Figure 2 yes Figure 1 A schematic structural diagram of the middle airbag 220;

[0010] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the middle airbag 220 along V-V;

[0011] Figure 4 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0012] Figure 5 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0013] Figure 6 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0014] Figure 7 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0015] Figure 8 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0016] Fig. 9 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0017] Fig.10 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0018] Fig.11 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0019] Fig.12 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0020] Fig.13 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0021] Fig.14 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0022] Fig.15 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V;

[0023] Fig.16 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along line V-V. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0025] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] See also Figure 1 , Figure 1 Schematic diagram of the structure of the wearable device 10 provided in an embodiment of the present application.

[0027] The wearable device 10 provided in the present application may be a smart watch, a smart bracelet, or a cuff-type blood pressure measuring device, etc., and the following only takes the wearable device 10 as a smart watch as an example. Figure 1 As shown, the wearable device 10 may include: a shell component 100 and a strap component 200. Among them, the shell component 100 can be connected to the strap component 200, and the shell component 100 can be used to carry and install various functional components required for the wearable device 10, such as an air pump, a speaker, a microphone, a display screen, a camera, a battery, and a detection module, etc. The strap component 200 can be connected to the shell component 100, and the strap component 200 can be tied to the user's wrist, and can expand and compress the user's wrist under the control of the aforementioned air pump, so as to cooperate with the aforementioned detection module to measure the user's blood pressure. In this embodiment, the strap component 200 has the advantage of a larger compression area at the same width, which is conducive to improving the compression effect of the strap component 200, thereby improving the accuracy of the wearable device 10 in blood pressure measurement.

[0028] Exemplarily, the shell assembly 100 can be jointly enclosed with the strap assembly 200 to form a wearing space 300, and the shell assembly 100 can include: a top surface 101 and a bottom surface 102 arranged opposite to each other, and a side surface 103 respectively connecting the top surface 101 and the bottom surface 102. Among them, the top surface 101 can be arranged away from the wearing space 300, and the top surface 101 can be used to install a display screen to realize the display function of the wearable device 10. The bottom surface 102 is exposed in the wearing space 300, and the bottom surface 102 can be used to install a light detection module and / or a bioelectric detection module to respectively realize the blood pressure / heart rate detection function of the wearable device 10. The side surface 103 can be connected to the strap assembly 200, and the side surface 103 can be used to install a detachable structure connected to the strap assembly 200 to realize the detachable function of the strap assembly 200. At the same time, the side surface 103 may also be provided with an air hole connected to the air pump, and the strap assembly 200 may be connected to the air pump through the air hole, so that the strap assembly 200 can expand under the control of the air pump. Of course, in addition to the air holes provided on the side surface 103, the bottom surface 102 may also be provided with air holes for the strap assembly 200 to communicate with the air pump. In this embodiment, when the wearable device 10 is a smart watch, the housing assembly 100 and the various devices mounted on the housing assembly 100 may together constitute the watch head of the wearable device 10.

[0029] The strap assembly 200 is connected to the housing assembly 100 and can be tied to the wrist of the user, and the strap assembly 200 can also expand to compress the wrist of the user. Figure 1 As shown, the strap assembly 200 may include: a strap 210 and an airbag 220. Among them, the strap 210 is connected to the shell assembly 100, and can be enclosed together with the shell assembly 100 to form a wearing space 300 to be tied to the user's wrist. The airbag 220 is arranged in the wearing space 300, and is connected to one side of the strap 210 located in the wearing space 300 to be fixed in the wearing space 300. At the same time, the airbag 220 is also inserted in the aforementioned air hole, and can expand under the control of the air pump to compress the user's wrist. In this embodiment, the airbag 220 has the advantage of a larger compression area at the same width, which is beneficial to improve the compression effect of the strap assembly 200, thereby improving the accuracy of blood pressure measurement of the wearable device 10.

[0030] The strap 210 may be a strap of the wearable device 10, and the strap 210 may be made of flexible materials such as silicone, rubber, and braid to improve the wearing comfort of the user. Among them, connectors may be provided at both ends of the strap 210, and the connectors may be detachably connected to the side 103 of the housing assembly 100, so that the strap 210 can be replaced. At the same time, a detachable structure may be provided on one side of the strap 210 located in the wearing space 300, and the airbag 220 may be detachably connected to the strap 210 through the detachable structure, so that the user can replace the strap 210 or the airbag 220. For example, the connection structure may be a Velcro, and the airbag 220 is also provided with a corresponding Velcro, so that the airbag 220 can be detachably set on the strap 210 through the Velcro. Of course, in addition to being detachably connected, the strap 210 and the housing assembly 100, and the strap 210 and the airbag 220 may also be connected in a non-detachable manner, which is not limited in this embodiment.

[0031] See also Figures 2 to 5 , Figure 2 yes Figure 1 A schematic diagram of the structure of the middle airbag 220, Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the middle airbag 220 along V-V, Figure 4 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Figure 5 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along line V-V.

[0032] The airbag 220 is connected to the strap 210, and the airbag 220 can be expanded to compress the user's wrist. Figures 2 to 3 As shown, the airbag 220 can be surrounded to form a cavity 2201, and the airbag 220 also has a first edge-sealed area 2202. The side of the first edge-sealed area 2202 close to the cavity 2201 constitutes part of the inner wall of the airbag 220, that is, the cavity wall of the cavity 2201, and the side of the first edge-sealed area 2202 away from the cavity 2201 constitutes part of the outer wall of the airbag 220, that is, the surface of the airbag 220 exposed to the external environment. In this way, the first edge-sealed area 2202 can also be used as a part of the cavity 2201 formed by the airbag 220, so that the airbag 220 can effectively utilize the first edge-sealed area 2202 to expand the effective compression area of ​​the airbag 220 compressing the user's wrist, thereby improving the compression effect of the airbag 220.

[0033] Furthermore, in order to reduce the difficulty of the process, at least one side of the airbag 220 also has a second edge-sealing area 2203, and the opposite sides of the second edge-sealing area 2203 both constitute part of the outer wall of the airbag 220. For example, the airbag 220 has two oppositely arranged long sides D1 and two oppositely arranged short sides D2. Among them, at least one of the two oppositely arranged long sides D1 is edge-sealed to form the aforementioned first edge-sealing area 2202, so as to achieve effective utilization of the first edge-sealing area 2202 in the width direction W of the airbag 220, thereby expanding the effective compression area of ​​the airbag 220 while keeping the total width of the airbag 220 unchanged, so as to achieve the purpose of improving the compression effect of the airbag 220. At the same time, both short sides D2 can be edge-sealed by conventional edge-sealing methods to form two second edge-sealing areas 2203, thereby reducing the difficulty of edge-sealing on the short sides D2. Of course, one of the two short sides D2 can also form the aforementioned first edge sealing area 2202, and the other edge sealing area can form the second edge sealing area 2203, so as to effectively utilize the first edge sealing area 2202 in the length direction L of the airbag 220, thereby expanding the effective compression area of ​​the airbag 220 and achieving the purpose of improving the compression effect of the airbag 220.

[0034] Optionally, in addition to the above embodiments, the two long sides D1 and the two short sides D2 can be sealed to form the aforementioned first edge-sealed area 2202 and the second edge-sealed area 2203 according to needs, and it is only necessary to ensure that at least one of the two long sides D1 and the two short sides D2 is sealed to form the second edge-sealed area 2203, which is not limited in this embodiment. In addition, the airbag 220 may not be limited to including the aforementioned two long sides D1 and the two short sides D2, that is, the number and length of the sides of the airbag 220 can be determined according to the design shape of the airbag 220, which is not limited in this embodiment.

[0035] It is understandable that the aforementioned length direction L and width direction W may be perpendicular to each other and are both directions of the airbag 220 in a flat state, and the long side D1 may be arranged parallel to the length direction L, and the short side D2 may be arranged parallel to the width direction W. At the same time, the airbag 220 may also have a thickness direction H perpendicular to the length direction L and the width direction W. In addition, the long side D1 and the short side D2 may be directly connected or indirectly connected (such as forming a chamfer through an arc at the connection between the two), which is not limited in this embodiment.

[0036] The following description will be made by taking the edge sealing of two long sides D1 to form the first edge sealing area 2202 as an example.

[0037] Exemplarily, the airbag 220 may include: a first sheet 221 and a second sheet 222 that are arranged oppositely and at intervals, and the first sheet 221 and the second sheet 222 also jointly enclose a cavity 2201. The first sheet 221 has a first matching portion 2211, and the second sheet 222 has a second matching portion 2221 that is arranged opposite to the first matching portion 2211, and the first matching portion 2211 is bent toward the direction close to the second matching portion 2221 and overlaps with the second matching portion 2221. At the same time, the overlapping first matching portion 2211 and the second matching portion 2221 can jointly constitute the aforementioned first edge sealing area 2202, and the side of the first matching portion 2211 away from the second matching portion 2221 can constitute the aforementioned partial inner wall, and the side of the second matching portion 2221 away from the first matching portion 2211 can constitute the aforementioned partial outer wall. In addition, the first matching portion 2211 and the second matching portion 2221 are both located at the long side D1 of the airbag 220, so that the long side D1 can be sealed to form the first edge sealing area 2202. In this way, the first edge sealing area 2202 can be used as a part of the cavity 2201 formed by the airbag 220 to achieve effective use of the first edge sealing area 2202.

[0038] Further, the number of the first matching parts 2211 and the number of the second matching parts 2221 are both two. Among them, the two first matching parts 2211 are respectively located at the two long sides D1, and the two second matching parts 2221 are also respectively located at the two long sides D1. At the same time, the two first matching parts 2211 can also overlap with the two second matching parts 2221 respectively to form the first edge sealing area 2202 by sealing at the two long sides D1. Among them, the first edge sealing area 2202 can be formed by the two overlapping areas of the first matching part 2211 and the second matching part 2221, which can be welded to form the first edge sealing area 2202 by sealing, and the first matching part 2211 and the second matching part 2221 are not limited to only including the partial area constituting the first edge sealing area 2202. For example, the first matching part 2211 can also include a partial area for bending. The following is only described by taking the overlap of a single first matching part 2211 and a second matching part 2221 as an example.

[0039] Furthermore, the first matching portion 2211 can be bent toward the direction close to the second matching portion 2221, while the second matching portion 2221 can remain flat. Figure 3 As shown, the first matching portion 2211 can be bent roughly in a U-shape to a side of the second matching portion 2221 close to the first matching portion 2211 , and overlap with the second matching portion 2221 , thereby forming the aforementioned first edge sealing area 2202 .

[0040] Optionally, since the first edge-sealed area 2202 has a high hardness (welded) and is located on the side where the second sheet 222 is located, the side of the first sheet 221 away from the second sheet 222 can be preferably the pressure-applying side B, and the pressure-applying side B can be used to apply pressure to the force-bearing body, that is, the wrist or arm of the user, to avoid the problem of reduced wearing comfort of the airbag 220 due to the first edge-sealed area 2202 contacting the user's skin. At the same time, the side of the second sheet 222 away from the first sheet 221 can be connected to the strap 210, so that the first edge-sealed area 2202 can be hidden between the strap 210 and the airbag 220, which is conducive to improving the appearance consistency of the wearable device 10.

[0041] Optionally, the side of the second sheet 222 facing away from the first sheet 221 can also serve as the pressure side B. At this time, considering that the first edge sealing area 2202 is a part of the pressure side B, in order to prevent the first edge sealing area 2202 from affecting the wearing comfort of the airbag 220, a flexible layer 223 ( Figure 4 The flexible layer 223 may be made of a flexible material such as leather, silicone, rubber or braid, and the flexible layer 223 may cover the entire side of the second sheet 222 away from the first sheet 221 (including the second matching portion 2221) to isolate the pressure-applying side B from the user's skin, thereby improving the wearing comfort of the airbag 220.

[0042] Optionally, in some embodiments, when the side of the first sheet 221 facing away from the second sheet 222 is the pressure side B, the side of the first sheet 221 facing away from the second sheet 222 may also be provided with a flexible layer 223, which is not limited in this embodiment. Alternatively, the airbag 220 may further include an isolation sleeve covering the first sheet 221 and the second sheet 222, so as to isolate the first edge sealing area 2202 from the user's wrist by using the isolation sleeve. At this time, the side of the first sheet 221 facing away from the second sheet 222 and the side of the second sheet 222 facing away from the first sheet 221 may both serve as the pressure side B.

[0043] See also Figures 5 and 6 , Figure 5 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Figure 6 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along line V-V.

[0044] Optionally, the first matching portion 2211 may also overlap the side of the second matching portion 2221 away from the cavity 2201, so that the side of the first matching portion 2211 away from the second matching portion 2221 can constitute part of the outer wall of the airbag 220, and the side of the second matching portion 2221 away from the first matching portion 2211 can constitute part of the inner wall of the airbag 220. At this time, considering that the first matching portion 2211 will form a bulge on the side of the second sheet 222 away from the first sheet 221, the side of the second sheet 222 away from the first sheet 221 can be provided with a filling layer 224 ( Figure 5 ). The filling layer 224 can be spliced ​​with the two first matching parts 2211 respectively to fill the grooves formed by the two first matching parts 2211 protruding on the second sheet 222, so as to form a flat surface by splicing with the first matching parts 2211. In this way, the opposite sides of the airbag 220 in the thickness direction H, that is, the side of the first sheet 221 away from the second sheet 222 and the side of the second sheet 222 away from the first sheet 221, can be kept flat and used as the pressure side B.

[0045] Optionally, when the side of the second sheet 222 facing away from the first sheet 221 is the pressure-applying side B, the side of the filling layer 224 facing away from the second sheet 222 may also be provided with a flexible layer 223. Figure 6 As shown, the flexible layer 223 can cover the filling layer 224 and the first matching part 2211 to shield the first edge sealing area 2202 and the joint between the first matching part 2211 and the filling layer 224, thereby playing the role of isolation and concealment, and improving the wearing comfort and refined appearance of the airbag 220.

[0046] It is understandable that in the aforementioned different embodiments, the first sheet 2211 and the second sheet 2221 can also be interchanged. That is, the first sheet 2211 can also be arranged like the second sheet 2221, so that the first sheet 2211 can also be called the second sheet 2221, and the second sheet 2221 can also be arranged like the first sheet 2211, so that the second sheet 2221 can also be called the first sheet 2211. In addition, the lengths of the first sheet 2211 and the second sheet 2221 in the length direction L can be the same or different, that is, the length of the first sheet 2211 can be greater than, equal to or less than the length of the second sheet 2221, as long as the two can enclose and form the cavity 2201.

[0047] See also Figures 7 to 10 , Figure 7 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Figure 8 yes Figure 2A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Fig. 9 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Fig.10 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along line V-V.

[0048] In addition to the above-mentioned embodiments, the airbag 220 may also include: a first sheet 221, a second sheet 222 and a third sheet 225, and the first sheet 221, the second sheet 222 and the third sheet 225 are also jointly arranged to form a cavity 2201. Figure 7 As shown, the first sheet 221 and the second sheet 222 can be arranged oppositely and at intervals, and the first sheet 221 has a first matching portion 2211, and the second sheet 222 has a second matching portion 2221 arranged opposite to the first matching portion 2211. The third sheet 225 overlaps with the first matching portion 2211 and the second matching portion 2221 respectively. The third sheet 225 and the first matching portion 2211 and the second matching portion 2221 respectively form two first edge-sealing areas 2202, and the side of the third sheet 225 away from the first matching portion 2211 and the second matching portion 2221 can constitute one of the aforementioned partial inner wall and / or partial outer wall, and the side of the first matching portion 2211 and / or the second matching portion 2221 away from the third sheet 225 can constitute the other of the aforementioned partial inner wall and partial outer wall. In this way, the first edge-sealed area 2202 can also be used as a part of the cavity 2201 formed by the airbag 220 to achieve effective utilization of the first edge-sealed area 2202 .

[0049] Further, the number of the first matching parts 2211 and the second matching parts 2221 is two. Among them, the two first matching parts 2211 are respectively located at the two long sides D1, and the two second matching parts 2221 are also respectively located at the two long sides D1, and the number of the third sheets 225 is also two. At the same time, one third sheet 225 can be overlapped with a first matching part 2211 and a second matching part 2221 respectively arranged oppositely, and another third sheet 225 can be overlapped with another first matching part 2211 and a second matching part 2221 respectively arranged oppositely, so as to form the first edge-sealed area 2202 at the two long sides D1 respectively. In this embodiment, the third sheet 225 can be edge-sealed and connected with the first matching part 2211 and the second matching part 2221 respectively by welding to form the aforementioned first edge-sealed area 2202.

[0050] Optionally, the first matching portion 2211 and the second matching portion 2221 may be arranged oppositely and in parallel, and in order to overlap with the first matching portion 2211 and the second matching portion 2221 respectively, the third sheet material 225 may bulge outward in a direction away from the cavity 2201 to form a curve to overlap with the first matching portion 2211 and the second matching portion 2221 respectively, thereby forming two first edge sealing areas 2202 together with the first matching portion 2211 and the second matching portion 2221 respectively. In this embodiment, the third sheet material 225 may include: an overlapping surface A covered by the first matching portion 2211 and the second matching portion 2221, and a connecting surface C located outside the first matching portion 2211 and the second matching portion 2221 and connected to the overlapping surface A, and the area of ​​the overlapping surface A may be or less than the area of ​​the connecting surface C, so that the size of the third sheet material 225 can be designed to be larger, so as to overlap with the first matching portion 2211 and the second matching portion 2221 that remain flat.

[0051] Specifically, if Figure 7 As shown, the third sheet material 225 may include: a first overlapping portion 2251, a second overlapping portion 2252 and a bent portion 2253. The bent portion 2253 may be connected to the first overlapping portion 2251 and the second overlapping portion 2252 respectively, and may be arranged to be convexly bent in a direction away from the cavity 2201, and the bent portion 2253 has a connecting surface C. The first overlapping portion 2251 and the second overlapping portion 2252 may overlap the first matching portion 2211 and the second matching portion 2221 respectively, and be located between the first matching portion 2211 and the second matching portion 2221, and the surface of the first overlapping portion 2251 in contact with the first matching portion 2211 and the surface of the second overlapping portion 2252 in contact with the second matching portion 2221 jointly form an overlapping surface A.

[0052] Furthermore, the first overlapping portion 2251 can jointly constitute the first edge sealing area 2202 with the first matching portion 2211, and the first overlapping portion 2251 can be overlapped on the side of the first matching portion 2211 facing away from the cavity 2201, so that the side of the first overlapping portion 2251 facing away from the first matching portion 2211 can constitute a part of the inner wall of the airbag 220, and the side of the first matching portion 2211 facing away from the first overlapping portion 2251 can constitute a part of the outer wall of the airbag 220. Similarly, the second overlapping portion 2252 can also constitute the first edge sealing area 2202 together with the second matching portion 2221, and the second overlapping portion 2252 can be overlapped on the side of the second matching portion 2221 facing away from the cavity 2201, so that the side of the second overlapping portion 2252 facing away from the second matching portion 2221 can constitute a part of the inner wall of the airbag 220, and the side of the second matching portion 2221 facing away from the second overlapping portion 2252 can constitute a part of the outer wall of the airbag 220.

[0053] Optionally, the first overlapping portion 2251 may also overlap on the side of the first mating portion 2211 away from the first cavity 2201, and the second overlapping portion 2252 may also overlap on the side of the second mating portion 2221 away from the cavity 2201 (as Figure 8 shown). That is, the side of the first overlapping portion 2251 away from the first mating portion 2211 may form a part of the outer wall of the airbag 220, and the side of the first mating portion 2211 away from the first overlapping portion 2251 may form a part of the inner wall of the airbag 220. Similarly, the side of the second overlapping portion 2252 away from the second mating portion 2211 may form a part of the outer wall of the airbag 220, and the side of the second mating portion 2221 away from the second overlapping portion 2252 may form a part of the inner wall of the airbag 220.

[0054] Optionally, the first overlapping portion 2251 and the second overlapping portion 2252 may not be limited to overlapping in the same manner. That is, when the first overlapping portion 2251 overlaps on the side of the first mating portion 2211 close to the cavity 2201, such that the side of the first overlapping portion 2251 away from the first mating portion 2211 forms a part of the inner wall, the second overlapping portion 2252 may also overlap on the side of the second mating portion 2221 away from the cavity 2201, such that the side of the second overlapping portion 2252 away from the second mating portion 2221 forms a part of the outer wall.

[0055] Optionally, when the side of the first overlapping portion 2251 away from the first mating portion 2211 forms a part of the outer wall, and the side of the second overlapping portion 2252 away from the second mating portion 2221 forms a part of the outer wall, considering that the first overlapping portion 2251 and the second overlapping portion 2252 will respectively form protrusions on the first sheet 221 and the second sheet 222, a filling layer 224 may be provided on both the first sheet 221 and the second sheet 222 ( Figure 8 shown). Taking the first sheet 221 as an example, the filling layer 224 may be spliced with the two first overlapping portions 2251 respectively, and can fill the grooves formed by the protrusions of the two first overlapping portions 2251 on the first sheet 221, so as to form a flat surface by splicing with the two first overlapping portions 2251. With such a setting, the opposite sides of the airbag 220 in the thickness direction H, that is, the side of the first sheet 221 away from the second sheet 222, and the side of the second sheet 222 away from the first sheet 221 can both remain flat and be used as the pressure application side B. Of course, in some embodiments, only one of the first sheet 221 and the second sheet 222 may be provided with the filling layer 224, and the one provided with the filling layer 224 may be used as the pressure application side B. In addition, a flexible layer 223 may also be covered on the filling layer 224 to cover the first sealing edge area 2202 and the filling layer 224 and play an isolation role.

[0056] Optionally, in addition to only bending the third sheet 225 to overlap the first matching portion 2211 and the second matching portion 2221, the first matching portion 2211 and the second matching portion 2221 may also be bent in a direction close to each other, and after bending, overlap the first overlapping portion 2251 and the second overlapping portion 2252 of the third sheet 225, respectively ( Figures 9 and 10 ). The first matching portion 2211 and the second matching portion 2221 may be symmetrically arranged in the width direction W, and the first overlapping portion 2251 and the second overlapping portion 2252 may also be symmetrically arranged in the width direction W. At the same time, the area of ​​the overlapping surface A may be greater than or equal to the area of ​​the connecting surface C, so that the size of the third sheet 225 is designed to be smaller, thereby facilitating reducing the abruptness brought by the third sheet 225.

[0057] See also Figure 11 to Figure 12 , Fig.11 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Fig.12 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along line V-V.

[0058] Optionally, in addition to the solution in the above embodiment that the third sheet 225 is bent to overlap the first matching portion 2211 and the second matching portion 2221, at least one of the first matching portion 2211 and the second matching portion 2221 may be bent to overlap the third sheet 225, while the third sheet 225 may remain flat. The third sheet 225 has an overlapping surface A, and the overlapping surface A is a plane. The first matching portion 2211 and the second matching portion 2221 can overlap on the overlapping surface A after being bent ( Fig.11 At the same time, when the first matching portion 2211 is bent and overlapped on the third sheet 225, the first matching portion 2211 can also form a folded corner convex toward the cavity 2201, and the third sheet 225 can be arranged close to the folded corner, so that the first edge sealing area 2202 is away from the central area where the airbag 220 contacts the user. In this embodiment, the specific bending shape and angle of the first matching portion 2211 and the second matching portion 2221 can be adaptively adjusted according to design requirements, and it is only necessary that the first matching portion 2211 and the second matching portion 2221 can overlap on the overlapping surface A of the third sheet 225 after bending.

[0059] Optionally, in addition to the first matching portion 2211 and the second matching portion 2221 being both bent, only the first matching portion 2211 may be bent ( Fig.12), while the second matching portion 2221 and the third sheet 225 can remain flat. The first matching portion 2211 can be bent roughly in a U-shape, and the first matching portion 2211 can be flush with the second matching portion 2221 in the thickness direction H after being bent.

[0060] Optionally, in order to prevent the third sheet material 225 from forming a bulge on the outer wall of the airbag 220, the third sheet material 225 may be preferably overlapped on one side of the first matching portion 2211 and the second matching portion 2221 close to the cavity 2201 ( Figure 11 to Figure 12 As shown), the side of the third sheet 225 facing away from the first matching portion 2211 and the second matching portion 2221 constitutes a partial inner wall of the airbag 220, while the side of the first matching portion 2211 and the second matching portion 2221 facing away from the third sheet 225 constitutes a partial outer wall of the airbag 220.

[0061] Optionally, in some embodiments, the third sheet 225 may also overlap on the side of the first mating portion 2211 and the second mating portion 2221 facing away from the cavity 2201, so that the side of the third sheet 225 facing away from the first mating portion 2211 and the second mating portion 2221 constitutes a portion of the outer wall of the airbag 220, and the side of the first mating portion 2211 and the second mating portion 2221 facing away from the third sheet 225 constitutes a portion of the inner wall of the airbag 220.

[0062] Optionally, when only the first matching portion 2211 is bent ( Fig.12 ), while the second matching portion 2221 and the third sheet 225 can remain flat, the side of the first sheet 221 away from the second sheet 222 is preferably the pressure side B. Of course, the side of the second sheet 222 away from the first sheet 221 can also be provided with a flexible layer 223, so that the side of the second sheet 222 away from the first sheet 221 is the pressure side B.

[0063] Optionally, during the welding process, the first matching portion 2211 and the second matching portion 2221 may be spaced apart on the overlap surface A to form a gap for absorbing manufacturing tolerances and avoiding the melting of the first matching portion 2211 and the second matching portion 2221 during welding, thereby preventing the overlapping area of ​​the first matching portion 2211 and the second matching portion 2221 from being too thick and affecting the thickness of the airbag 220. After the third sheet 225 is welded to the first matching portion 2211 and the second matching portion 2221, the first matching portion 2211 and the second matching portion 2221 may be preferably spliced ​​on the overlap surface A to improve the flatness of the outer wall of the airbag 220. Of course, in order to reduce the risk of the airbag 220 being too thick due to the aforementioned welding, after the first matching part 2211 and the second matching part 2221 are welded to the third sheet 225, the first matching part 2211 and the second matching part 2221 can also be spaced apart on the overlapping surface A to form a gap to ensure that the first matching part 2211 and the second matching part 2221 do not overlap.

[0064] See also Figures 13 to 16 , Fig.13 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Fig.14 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Fig.15 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along V-V, Fig.16 yes Figure 2 A schematic diagram of a cross-sectional structure of the middle airbag 220 along line V-V.

[0065] Optionally, in addition to the above embodiments, the airbag 220 may also include: a first sheet 221 and a third sheet 225. Figures 13 to 16As shown, the first sheet 221 can be folded along an axis parallel to the length direction L, and has a first connection portion 221a and a second connection portion 221b away from the axis, and the first connection portion 221a and the second connection portion 221b can be arranged opposite to each other. The third sheet 225 can overlap with the first connection portion 221a and the second connection portion 221b respectively, and enclose together with the first sheet 221 to form a cavity 2201. Among them, the third sheet 225 and the first connection portion 221a and the second connection portion 221b respectively form two first edge-sealed areas 2202, and the side of the third sheet 225 away from the first connection portion 221a and the second connection portion 221b can constitute one of the aforementioned partial inner wall and partial outer wall, and the side of the first connection portion 221a and the second connection portion 221b away from the third sheet 225 can constitute the other of the aforementioned partial inner wall and partial outer wall. In this way, the first edge-sealed area 2202 can also be used as a part of the cavity 2201 formed by the airbag 220 to achieve effective utilization of the first edge-sealed area 2202 .

[0066] Furthermore, the third sheet 225 overlaps with the first connecting portion 221a and the second connecting portion 221b to form two first edge-sealed areas 2202, which is the same or similar to the overlap of the third sheet 225 with the first matching portion 2211 and the second matching portion 2221 to form two first edge-sealed areas 2202 in the aforementioned embodiment, and will not be described in detail here. The only difference from the aforementioned embodiment is that the folded first sheet 221 replaces the first sheet 221 and the second sheet 222 in the aforementioned embodiment that are opposite and spaced, so that only one of the two long sides D1 of the airbag 220 can be edge-sealed to form the first edge-sealed area 2202, and the other corresponds to the axis of the folding of the first sheet 221. The aforementioned axis can be parallel to the length direction L.

[0067] The airbag 220 provided in the present application is provided with a first edge-sealed area 2202, and the side of the first edge-sealed area 2202 close to the airbag cavity 2201 constitutes a part of the inner wall of the airbag 220, and the side of the first edge-sealed area 2202 away from the cavity 2201 constitutes a part of the outer wall of the airbag 220, so that the first edge-sealed area 2202 can be used as a part of the cavity 2201 formed by the airbag 220. In this way, the airbag 220 provided in the present application can realize the effective use of the first edge-sealed area 2202, so as to expand the effective compression area of ​​the airbag 220 while keeping the total width of the airbag 220 unchanged, thereby improving the compression effect of the airbag 220.

[0068] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An airbag, characterized in that: The airbag is surrounded to form a cavity and has a first edge-sealed area; wherein, A side of the first edge sealing area close to the cavity constitutes a part of the inner wall of the airbag, and a side of the first edge sealing area away from the cavity constitutes a part of the outer wall of the airbag.

2. The airbag according to claim 1, characterized in that: The airbag comprises: a first sheet and a second sheet arranged opposite to each other and spaced apart, and the first sheet and the second sheet are also jointly arranged to form the cavity; The first sheet material has a first matching portion, the second sheet material has a second matching portion arranged opposite to the first matching portion, and the first matching portion is bent toward the direction close to the second matching portion and overlaps with the second matching portion; wherein, The first matching portion and the second matching portion together constitute the first edge sealing area, and a side of the first matching portion facing away from the second matching portion constitutes the partial inner wall, and a side of the second matching portion facing away from the first matching portion constitutes the partial outer wall.

3. The airbag according to claim 2, characterized in that: One of a side of the first sheet facing away from the second sheet and a side of the second sheet facing away from the first sheet is a pressure-applying side, and the pressure-applying side is configured to be disposed close to a force-bearing body.

4. The airbag according to claim 3, characterized in that: The side of the second sheet material facing away from the first sheet material is the pressure-applying side; wherein, A flexible layer is also provided on the pressure-applying side, and the flexible layer is configured to isolate the pressure-applying side from the force-bearing body.

5. The airbag according to claim 1, characterized in that: The airbag comprises: a first sheet, a second sheet and a third sheet that together surround and form the cavity; The first sheet and the second sheet are arranged opposite to each other and at intervals, and respectively have a first matching portion and a second matching portion arranged opposite to each other and at intervals; the third sheet overlaps the first matching portion and the second matching portion respectively; wherein, The third sheet material, together with the first matching portion and the second matching portion, respectively constitutes two first edge sealing areas, and a side of the third sheet material facing away from the first matching portion and / or the second matching portion constitutes one of the partial inner wall and the partial outer wall, and a side of the first matching portion and / or the second matching portion facing away from the third sheet material constitutes the other of the partial inner wall and the partial outer wall.

6. The airbag according to claim 5, characterized in that: The third sheet material bulges outward in a direction away from the cavity to form a bend to overlap the first matching portion and the second matching portion respectively.

7. The airbag according to claim 6, characterized in that: The third sheet material includes: a lap joint surface covered by the first matching portion and the second matching portion, and a connecting surface located outside the coverage of the first matching portion and the second matching portion and connected to the lap joint surface; wherein the area of ​​the lap joint surface is greater than, less than, or equal to the area of ​​the connecting surface.

8. The airbag according to claim 7, characterized in that: The third sheet material comprises: a first overlapping portion, a second overlapping portion and a bending portion respectively connected to the first overlapping portion and the second overlapping portion, and the first overlapping portion and the second overlapping portion are overlapped with the first matching portion and the second matching portion respectively; wherein, The first overlapping portion and the first matching portion together constitute the first edge sealing area, and a side of the first overlapping portion away from the first matching portion constitutes one of the partial inner wall and the partial outer wall, and a side of the first matching portion away from the first overlapping portion constitutes the other of the partial inner wall and the partial outer wall; The second overlapping portion and the second matching portion together constitute another first edge sealing area, and a side of the second overlapping portion facing away from the second matching portion constitutes one of the partial inner wall and the partial outer wall, and a side of the second matching portion facing away from the second overlapping portion constitutes the other of the partial inner wall and the partial outer wall.

9. The airbag according to claim 5, characterized in that: The third sheet material has an overlapping surface, and the overlapping surface is a plane; wherein, The first matching portion is bent toward a direction close to the second matching portion, and overlaps on the overlapping surface after being bent, and the second matching portion also overlaps on the overlapping surface.

10. The airbag according to claim 9, characterized in that: The third sheet is arranged close to the corner formed by bending the first matching portion; wherein A side of the third sheet material facing away from the first matching portion and / or the second matching portion constitutes a portion of the inner wall, and a side of the first matching portion and / or the second matching portion facing away from the third sheet material constitutes a portion of the outer wall.

11. The airbag according to claim 7 or 10, characterized in that: One of a side of the first sheet facing away from the second sheet and a side of the second sheet facing away from the first sheet is a pressure-applying side, and the pressure-applying side is configured to be disposed close to a force-bearing body.

12. The airbag according to claim 1, characterized in that The airbag comprises: a first sheet material and a third sheet material; The first sheet is folded along an axis and has a first connecting portion and a second connecting portion away from the axis, and the first connecting portion and the second connecting portion are arranged opposite to each other; the third sheet overlaps the first connecting portion and the second connecting portion respectively, and is surrounded together with the first sheet to form the cavity; wherein The third sheet material, together with the first connecting portion and the second connecting portion, respectively constitute two first edge sealing areas, and a side of the third sheet material facing away from the first connecting portion and / or the second connecting portion constitutes one of the partial inner wall and the partial outer wall, and a side of the first connecting portion and / or the second connecting portion facing away from the third sheet material constitutes the other of the partial inner wall and the partial outer wall.

13. The airbag according to claim 1, characterized in that At least one side of the airbag has a second edge-sealed area, and opposite sides of the second edge-sealed area both constitute a portion of the outer wall of the airbag.

14. The airbag according to claim 1, characterized in that The airbag comprises: a first sheet and a second sheet, wherein the first sheet and the second sheet are configured to enclose the cavity; wherein the length of the first sheet is greater than, less than or equal to the length of the second sheet.

15. A strap assembly, characterized in that: The strap assembly comprises: a strap and the airbag according to any one of claims 1 to 14, and the strap is connected to the airbag.

16. A wearable device, characterized in that: The wearable device comprises: a housing assembly and the strap assembly according to claim 15; The strap is connected to the shell component and can be arranged together with the shell component to form a wearing space; the airbag is connected to one side of the strap located in the wearing space.

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