Airbag, wristband, and wearable electronic device

Abstract

An airbag (220), a wristband (200), and a wearable electronic device (1000). The airbag (220) comprises a first bag body (221) and a second bag body (222). The first bag body (221) and the second bag body (222) are stacked in a thickness direction of the airbag (220). The first bag body (221) comprises a first main body layer (225) and a second main body layer. The first main body layer (225) and the second main body layer are connected and define a first cavity (226). The second bag body (222) comprises a third main body layer (229) and a fourth main body layer. The third main body layer (229) and the fourth main body layer are connected and define a second cavity (230). The first cavity (226) is in communication with the second cavity (230). The second main body layer and the fourth main body layer are partially connected to form a connection region (231). An unconnected region of the second main body layer and the fourth main body layer is a non-connection region. A reinforcing member (240) is stacked in the non-connection region. The reinforcing member (240) is adjacent to the connection region (231). The airbag (220) is inflated, the first bag body (221) and the second bag body (222) expand in a cavity thickness direction, and the reinforcing member (240) drives the non-connection region of the second main body layer away from the fourth main body layer. The reinforcing member (240) can improve the strength of the first bag body (221), thereby preventing the function of the first bag body from being affected by offset during inflation.

Description

Airbags, wristbands, and wearable electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 12, 2023, with application number 202311704599.2 and application name “Airbag, wristband and wearable electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of electronic equipment, and in particular to an airbag, a wristband and a wearable electronic device. Background Art

[0003] With the advancement and development of science and technology, some wearable electronic devices (such as smart bracelets, smart watches, etc.) have health monitoring functions such as measuring blood pressure. Taking a smart watch as an example, when the user measures blood pressure, he wears the strap of the electronic device on his wrist, and the airbag on the strap is inflated. The user's wrist artery is compressed by the airbag, so that the pressure sensor located on the hand side of the airbag extracts the user's pulse signal, and the pulse signal is calculated to obtain the user's blood pressure. If the stability of blood pressure measurement is to be guaranteed, the airbag is required to have a sufficient width. However, the width of the airbag is large, which will cause the user to feel stuffy and uncomfortable when wearing it. Therefore, providing a device that can not only ensure the stability of blood pressure measurement but also provide wearing comfort has become a difficult problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The present application provides an airbag, a wristband, and a wearable electronic device, which are used to improve the stability of airbag measurement while ensuring that the wearable electronic device has sufficient wearing comfort.

[0005] The present application provides an airbag, comprising a first bag body and a second bag body, wherein the first bag body and the second bag body are stacked in the thickness direction of the airbag, the first bag body comprises a first main body layer and a second main body layer, the first main body layer and the second main body layer are connected and form a first cavity, the second bag body comprises a third main body layer and a fourth main body layer, the third main body layer and the fourth main body layer are connected and form a second cavity, the first cavity and the second cavity are communicated, the first bag body and the second bag body are stacked, the second main body layer and the fourth main body layer are partially connected and form a connection area, the area where the second main body layer and the fourth main layer are not connected is a non-connection area, the non-connection area is stacked with a reinforcement, the reinforcement is adjacent to the connection area, the airbag is inflated, the first cavity and the second cavity are inflated, the first bag body and the second bag layer expand along the thickness direction of the cavity, and the reinforcement drives the non-connection area of ​​the second main body layer away from the fourth main layer.

[0006] On the first aspect, in an embodiment of the present application, the airbag is arranged on a wristband, and the wristband is arranged on a wearable electronic device. The wristband allows the wearable electronic device to be worn on the wrist of the user. The reinforcement has sufficient strength to support the non-connection area when the first bag is deformed, and prevents the non-connection area from shifting away from the connection area when deformed, that is, preventing deformation in the direction of the square bias of the airbag width, so as to avoid the first bag from shifting from the gap between the wristband and the wrist, thereby avoiding the first bag from deviating from the position of the user's pulse and affecting the measurement accuracy of the wearable electronic device.

[0007] In one embodiment, the reinforcing member is provided with a plurality of hollow portions, spaced apart along the length of the reinforcing member, each of which extends through the reinforcing member along the thickness of the first bladder. These hollow portions can reduce stress in the reinforcing member, preventing wrinkles in non-connected areas caused by excessive stress in the reinforcing member during expansion of the first bladder. The hollow portions are through-hole structures, and their shape is not limited.

[0008] In one embodiment, each of the hollowed portions is provided with an opening extending through one side of the reinforcing member in the width direction. The provision of the opening can enhance the functionality of the hollowed portion and relieve more stress in the reinforcing member. The opening can face toward or away from the connection area. The contour of the opening can be a semicircle, a three-quarter circle, a curved surface, or an arc. Multiple openings spaced along the length of the reinforcing member form a curved surface, which can be wavy.

[0009] In one embodiment, the connection area is provided with a plurality of vents, a plurality of which connect the first cavity and the second cavity. The vents are spaced apart along the length of the connection area, and are opposite to the hollow portions one by one along the width of the connection area. The openings face the vents, and the middle regions of the vents face the openings of the hollow portions. When the first bladder expands, the second main body deforms, and the vents deform, and the surrounding connection area deforms in the width direction of the connection area (the width direction of the first bladder), with the openings providing deformation space for the vents.

[0010] In one embodiment, the hardness of the reinforcing member is greater than the hardness of the first bladder, so as to provide strength support to the non-connected area and prevent the non-connected area from shifting.

[0011] In one embodiment, along the width direction of the first bladder, the width of the reinforcing piece is less than or equal to the width of the first support portion, thereby ensuring that the reinforcing piece is effective and not strong. The width of the reinforcing piece is greater than or equal to 1 mm and less than or equal to 7 mm.

[0012] In one embodiment, the distance between each two hollow portions is the same, so as to improve the uniformity of the stress of the reinforcing member and thereby ensure the uniformity of the support for the first bladder.

[0013] In one embodiment, the connection area is provided with a plurality of ventilation holes, and a plurality of the ventilation holes connect the first cavity and the second cavity; the connection area is divided into a first part and a second part, and at least some of the plurality of ventilation holes are located in the first part; or, some of the plurality of ventilation holes are located in the first part, and another part is located in the second part, and the number of ventilation holes in the first part is the same as the number of ventilation holes in the second part, and the cross-sectional area of ​​the ventilation holes in the first part is larger than the cross-sectional area of ​​the ventilation holes in the second part. It can be understood that the ventilation area of ​​the first sub-hole is larger than the ventilation area of ​​the second sub-hole, the pulse signal includes the radial artery pulse signal and the ulnar artery pulse signal, the first sub-hole corresponds to the area of ​​the radial artery, and the second sub-hole corresponds to the area of ​​the ulnar artery. When the airbag is inflated, the ventilation speed of the gas through the first sub-hole during the process of gas entering the first cavity from the second cavity is higher than the ventilation speed of the gas through the second sub-hole, so that the area corresponding to the first balloon and the first sub-hole is larger in contact with the wrist, and the pulse signal of the ulnar artery can be filtered out while accurately detecting the pulse signal of the radial artery, thereby obtaining the desired pulse signal.

[0014] In one embodiment, two ends of the reinforcing piece along the length direction of the first bladder have chamfered profiles or semicircular arc profiles.

[0015] In one embodiment, the reinforcing member is fixedly connected to the second main body layer by a pressing process. The reinforcing member is fixedly connected to the first support portion by hot pressing, thereby achieving the integrity of the reinforcing member and the first support portion, improving the connection stability, and ensuring that the first support portion can deform.

[0016] In one embodiment, the airbag includes a third bag body, which is stacked between the first bag body and the second bag body. The third bag body includes a fifth main body layer and a sixth main body layer. The fifth main body layer and the sixth main body layer are respectively connected to the second main body layer and the fourth main body layer. The fifth main body layer and the sixth main body layer have a non-connection area. The reinforcement is provided on the non-connection area of ​​the fifth main body layer, and / or the reinforcement is provided on the non-connection area of ​​the sixth main body layer.

[0017] In one embodiment, the airbag includes a sensor, an air nozzle, and a wire. The sensor is located within the first cavity. The air nozzle is located at one end of the second airbag body and connects the outside world to the second cavity. The wire is connected to the sensor and extends from the air nozzle through the first cavity, the vent, and the second cavity. Extending the wire from the air nozzle eliminates the need for an additional opening in the airbag, ensuring the airbag's sealing performance and, therefore, the test performance.

[0018] In a second aspect, this embodiment provides a wristband comprising a band body and the aforementioned airbag, wherein the airbag is disposed on one side of the band body, and the second airbag is connected to the band body. The reinforcing member has sufficient strength to support the first airbag when it deforms, preventing it from shifting during deformation and ensuring the stability of the relative position of the airbag to the human body.

[0019] In one embodiment, the belt body and the airbag are an integrated structure. The integrated structure of the belt body and the airbag can improve the stability of the connection between the airbag and the belt body during inflation and deflation.

[0020] In a third aspect, this embodiment provides a wearable electronic device comprising a body and the wristband, wherein the wristband is connected to opposite ends of the body along its length, and the airbag is disposed on the inner side of the wristband. The double-layer airbag structure design of the wearable electronic device provided in this application ensures that the airbag exerts sufficient pressure on the user's wrist when inflated, thereby improving the accuracy of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without any creative work.

[0022] FIG1 is a schematic structural diagram of a wearable electronic device provided in an embodiment of the present application;

[0023] FIG2 is a schematic cross-sectional view of the first wristband in FIG1 ;

[0024] FIG3 is a schematic structural diagram of the airbag shown in FIG1 ;

[0025] FIG4 is a schematic diagram of the exploded structure of the airbag shown in FIG3 ;

[0026] FIG5 is an exploded schematic diagram of the airbag shown in FIG3 from another angle;

[0027] FIG6 is a schematic cross-sectional view of the airbag shown in FIG3 ;

[0028] FIG7 is a schematic structural diagram of the reinforcement member shown in FIG3;

[0029] FIG8 a is a schematic cross-sectional view of an embodiment of the first capsule in FIG2 ;

[0030] FIG8 b is a schematic cross-sectional view of a second embodiment of the first capsule in FIG2 ;

[0031] FIG8c is a schematic cross-sectional view of a third embodiment of the first capsule in FIG2;

[0032] FIG8 d is a schematic cross-sectional view of a fourth embodiment of the first capsule in FIG2 ;

[0033] FIG8e is a schematic cross-sectional view of a fifth embodiment of the first capsule in FIG2;

[0034] FIG8 f is a schematic cross-sectional view of a sixth embodiment of the first capsule in FIG2 ;

[0035] FIG8g is a schematic cross-sectional view of a seventh embodiment of the first capsule in FIG2;

[0036] FIG9 is a schematic cross-sectional view of the airbag shown in FIG3 from another angle;

[0037] FIG10 a is a simplified structural diagram of an embodiment of the airbag in FIG2 ;

[0038] FIG10 b is a simplified structural diagram of another embodiment of the airbag in FIG2 .

[0039] The names corresponding to the reference numerals in the figures are: 1000 electronic device, 100 body, 200 wristband, 200a first wristband, 200b second wristband, 110 display screen, 120 rear shell, 130 middle frame, 210 band body, 220 airbag, 221 first bladder body, 222 second bladder body, 223 first connecting portion, 2231 first vent hole, 224 first supporting portion, 225 first main body layer, 226 first cavity Body, 227 second connecting portion, 2271 second vent, 228 second supporting portion, 229 third main body layer, second cavity 230, 231 connecting area, 232 vent, 232a first sub-hole, 232b second sub-hole, 240 reinforcement, 241 hollow portion, 250 sensor, 251 wire, 260 air nozzle, 270 fitting area, 280 locking portion, 281 buckle, 282 buckle nail, 283 buttonhole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0042] Please refer to Figure 1, which is a schematic diagram of the structure of a wearable electronic device provided in an embodiment of the present application. The wearable electronic device 1000 can be, but is not limited to, a wearable electronic device such as a watch or a bracelet, and can be used in fields such as daily wearable monitoring devices and medical devices. The wearable electronic device 1000 can be worn on the user's wrist and can detect the user's blood pressure and monitor the user's physical condition at any time. In the embodiment of the present application, the wearable electronic device 1000 is described using a smartwatch as an example. The basic principle of measuring blood pressure with a smartwatch is as follows: when a user uses a smartwatch to measure blood pressure, the smartwatch is worn on the user's wrist. The smartwatch wristband and the airbag on the wristband simultaneously surround the user's wrist and cover the user's ulnar artery and radial artery. Through the UI control interface on the smartwatch, the air nozzle is driven to inflate the airbag, pressurizing the airbag and expanding it, thereby compressing the artery. The sensor located on the wrist side of the airbag collects the pulse signal of the user's wrist artery and obtains the user's blood pressure through the relevant processing module.

[0043] For ease of description, in this application, the length direction of the wearable electronic device 1000 is defined as the X-axis direction, the width direction of the wearable electronic device 1000 is defined as the Y-axis direction, and the height direction of the wearable electronic device 1000 is defined as the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are perpendicular to each other. It should be noted that the directional terms such as "upper" and "lower" involved in this application are described with reference to the orientation shown in Figure 1, with the direction toward the positive direction of the Z-axis being "up" and the direction toward the negative direction of the Z-axis being "lower". It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0044] The wearable electronic device 1000 includes a main body 100 and a wristband 200, and the wristband 200 is connected to two opposite ends of the main body 100. When the user wears the wearable electronic device 1000, the wristband 200 is wrapped around the user's wrist. The wristband 200 can be an integrated structure, such as a bracelet. The wristband 200 can also be divided into two parts. In this embodiment, the wristband 200 is divided into two parts, namely a first wristband 200a and a second wristband 200b. The structures of the first wristband 200a and the second wristband 200b can be the same or different. The first wristband 200a and the second wristband 200b are connected to the two opposite ends of the main body 100 along the length direction (X direction shown in the figure). Specifically, the two opposite ends of the main body 100 along the length direction are provided with a first clamping portion (not shown in the figure) for connecting the main body 100 with the first wristband 200a and the second wristband 200b. When a user wears the wearable electronic device 1000, the first wristband 200a and the second wristband 200b are wrapped around the user's wrist and fixed to each other. The wristband 200 can be made of plastic material, or a belt, or a fiber braid.

[0045] The main body 100 includes a display screen 110, a rear housing 120, a middle frame 130, a processor (not shown), a circuit board (not shown), and a power module (not shown). The rear housing 120 is mounted on one side of the middle frame 130 and forms a storage space with the middle frame 130. The display screen 110 is mounted on the other side of the middle frame 130 and is positioned opposite the rear housing 120 along the thickness direction of the middle frame 130, enclosing the storage space formed by the middle frame 130 and the rear housing 120. The display screen 110 displays the control interface of the wearable electronic device 1000 and the user's blood pressure. The processor, circuit board, and power module are mounted in the storage space formed by the rear housing 120 and the middle frame 130. The power module is electrically connected to the circuit board to provide power to the wearable electronic device 1000. The processor can be the CPU (central processing unit) of the wearable electronic device 1000, which is electrically mounted on the circuit board and is responsible for processing the user's pulse signal data and driving the display screen 110 to display the user's blood pressure. The display screen 110 can be set on the disk surface of the main body 100, or it can serve as the disk surface of the entire main body 100. The display screen is used to control the wearable electronic device 1000, display call information, news, functional information and other content, and synchronize the phone functions such as calls, text messages, health monitoring structures, photos, music, etc. in the mobile phone. The display screen 110 can be a liquid crystal display screen, an organic light emitting diode display screen, etc. Functional devices for realizing entertainment functions, health monitoring, sports monitoring and navigation can be set in the main body 100, or they can be set on the wristband 200. The wearable electronic device 1000 also includes a memory, a communication module, an antenna, etc. The memory, the communication module, the antenna, and the circuit board are electrically connected.

[0046] Please refer to Figures 2 and 3. Figure 2 is a schematic cross-sectional view of the first wristband in Figure 1, and Figure 3 is a schematic view of the structure of the airbag shown in Figure 1. The first wristband 200a is a band-like structure, which includes a band body 210 and a second clamping portion (not shown). The band body 210 includes two oppositely arranged ends (not shown), which are the two oppositely arranged ends in the length direction of the first wristband 200a. The second clamping portion is provided at one end of the first wristband 200a, which is used to be fixedly connected to a first clamping portion (not shown) of the main body 100 to achieve the connection between the first wristband 200a and the main body 100. The second wristband 200b is also provided with a second clamping portion (not shown) for being fixedly connected to another first clamping portion (not shown) of the main body 100.

[0047] The wearable electronic device 1000 also includes an airbag 220, which is mounted on the wristband 200. The airbag 220 can automatically inflate and deflate to measure blood pressure, and the test results are displayed on the display screen 110 of the wearable electronic device 1000. The wearable electronic device 1000 is equipped with a functional device that cooperates with the airbag 220 to convert the signal detected by the airbag into a pulse signal and read the signal. The airbag 220 can be made of leather or an elastic, non-breathable, flexible material. The airbag 220 and the wristband 200 can be secured by, but are not limited to, pressing or bonding. In this embodiment, the airbag 220 and wristband 200 are fixedly connected by pressing. The wristband 200, together with the airbag 220, wraps around the user's wrist, and the airbag 220 contacts the user's wrist. In this embodiment, the airbag 220 is located on one side of the first wristband 200a. Of course, the airbag 220 can also be located on one side of the second wristband 200b.

[0048] Specifically, the airbag 220 is located on one side of the belt body 210, and the airbag 220 is fixedly connected to the belt body 210 by pressing. It can be understood that the airbag 220 and the belt body 210 are an integrated structure, which can improve the stability of the connection between the airbag 220 and the belt body 210 during inflation and deflation.

[0049] Please refer to Figures 4 and 5. Figure 4 is a schematic diagram of the exploded structure of the airbag shown in Figure 3, and Figure 5 is a schematic diagram of the exploded structure of the airbag shown in Figure 3 from another angle. In this embodiment, the airbag 220 includes a first capsule 221 and a second capsule 222. The first capsule 221 and the second capsule 222 are stacked and fixedly connected in the thickness direction of the airbag 220. In this embodiment, the airbag 220 is a rectangular parallelepiped. In other embodiments, the airbag 220 can also be circular. The first capsule 221 is located on the side of the second capsule 222 away from the band body 210. It will be understood that the first capsule 221 is located on the side of the first wristband 200a that contacts the user's wrist.

[0050] Please also refer to Figure 6, which is a schematic cross-sectional view of the airbag shown in Figure 3. The first bladder body 221 includes a first connecting portion 223, a first support portion 224, and a first main layer 225. Along the circumference of the first bladder body 221, the first support portion 224 connects the first connecting portion 223 and the first main layer 225, and the first support portion 224, the first connecting portion 223, and the first main layer 225 enclose a first cavity 226. The first support portion 224 is located on the circumferential side of the first connecting portion 223. The first support portion 224 and the first connecting portion 223 are opposite the first main layer 225 in the thickness direction of the airbag. It can be understood that the first connecting portion 223 and the first support portion 224 constitute the second main layer. The periphery of the first main layer 225 is connected to the periphery of the second main layer and encloses the first cavity 226. In this embodiment, the first bladder body 221 is made of an elastic material. When inflated, the first cavity 226 causes the first bladder 221 to expand, which means that the first connecting portion 223, the first support portion 224, and the first main body layer 225 will deform. It should be noted that the first connecting portion 223, the first support portion 224, and the first main body layer 225 are an integral structure. The first connecting portion 223 is provided with at least two first ventilation holes 2231. The first ventilation holes 2231 pass through the first connecting portion 223 along the thickness direction of the first connecting portion 223 and are connected to the first cavity 226. In this embodiment, the first connecting portion 223 is provided with a plurality of first ventilation holes 2231, and the plurality of first ventilation holes 2231 are arranged at intervals along the length direction of the first bladder 221. The plurality of first ventilation holes 2231 have the same shape and the same cross-sectional area. In other embodiments, the plurality of first ventilation holes 2231 may have different shapes and cross-sectional areas. The shape of the first ventilation holes 2231 may be rectangular, circular, or irregular.

[0051] The structure of the second bladder 222 is essentially the same as that of the first bladder 221, comprising a second connecting portion 227, a second supporting portion 228, and a third main layer 229. Along the circumference of the second bladder 222, the second supporting portion 228 connects the second connecting portion 227 and the third main layer 229. Together, the second supporting portion 228, the second connecting portion 227, and the third main layer 229 form a second cavity 230. The second supporting portion 228 is located circumferentially of the second connecting portion 227. The second supporting portion 228 and the second connecting portion 227 oppose the third main layer 229 along the thickness of the airbag. It can be understood that the second connecting portion 227 and the second supporting portion 228 constitute the fourth main layer. The periphery of the third main layer 229 connects to the periphery of the fourth main layer, forming the second cavity 230. When inflated, the second cavity 230 expands the second bladder 222, causing the second connecting portion 227, the second supporting portion 228, and the third main layer 229 to deform.

[0052] It should be noted that the second connecting portion 227, the second supporting portion 228 and the third main body layer 229 are an integral structure. The second connecting portion 227 is provided with at least two second ventilation holes 2271, and the second ventilation holes 2271 pass through the second connecting portion 227 along the thickness direction of the second connecting portion 227 and are connected to the second cavity 230. In this embodiment, the second connecting portion 227 is provided with a plurality of second ventilation holes 2271, and the plurality of second ventilation holes 2271 are arranged at intervals along the length direction of the second capsule 222. The plurality of second ventilation holes 2271 have the same shape and the same cross-sectional area. In other embodiments, the shapes and cross-sectional areas of the plurality of second ventilation holes 2271 may be different. The shape of the second ventilation hole 2271 may be rectangular, circular or irregular.

[0053] Along the thickness of the airbag 220, the first and second bladder bodies 221 and 222 are connected, and the second and fourth main body layers are partially pressed together to form a connection region 231. This connection region 231 is provided with a plurality of vents 232. Specifically, the first connection portion 223 of the first bladder body 221 and the second connection portion 227 of the second bladder body 222 are pressed together by heat pressing to form the connection region 231 of the airbag 220. The first vents 2231 and the second vents 2271 correspond one-to-one and are connected to form a plurality of vents 232. The vents 232 are located in the connection region 231 and connect the first and second cavities 226 and 230. The vents 232 extend through both the first and second connection portions 223 and 227 along their thickness. The vents 232 allow gas to flow between the first cavity 226 of the first bladder 221 and the second cavity 230 of the second bladder 222 during inflation or deflation of the airbag 220. The connection area 231, formed by the press-fitting of the first connecting portion 223 and the second connecting portion 227, connects a portion of the second main body layer to a portion of the fourth main body layer. This area has a greater hardness than other areas of the airbag 220, facilitating gas flow between the first bladder 221 and the second bladder 222.

[0054] In this embodiment, the area between every two first vents 2231 on the first connecting portion 223 is in contact with the area between every two second vents 2271 on the second connecting portion 227 but is not fixed, that is, it is not pressed together. This part can be called an adjustment area, and the adjustment area is located within the connecting area 231. When gas passes through the vents to inflate the first and second bladders 221 and 222, the adjustment area can improve the flexibility of the connecting area and avoid affecting the deformation of the connecting area. It should be noted that when inflated, the shape of the vent 232 will change. For example, the vent 232 in this embodiment is rectangular, and the middle position of the vent 232 will expand and deform to both sides in the width direction.

[0055] Along the thickness direction of the airbag 220, the first support portion 224 of the first bladder 221 and the second support portion 228 of the second bladder 222 are arranged opposite each other. When the airbag 220 is inflated, that is, the first cavity 226 and the second cavity 230 are filled with gas, the first main layer 225 of the first bladder 221 and the third main layer 229 of the second bladder 222 move away from each other. At the same time, the first support portion 224 of the first bladder 221 and the second support portion 228 of the second bladder 222 move away from each other and are spaced apart. In practice, both the first bladder 221 and the second bladder 222 deform and expand. Specifically, the first bladder 221 and the second bladder 222 change shape and undergo elastic deformation when the airbag 220 is inflated. Of course, the first bladder 221 and the second bladder 222 may not undergo elastic deformation, or the elastic deformation may be only minimal.

[0056] The airbag 220 is also provided with an air nozzle 260. In this embodiment, the air nozzle 260 is located at one end of the second bladder body 222. The air nozzle 260 can be integrally formed with the second bladder body 222 or additionally attached to the second bladder body 222. The air nozzle 260 is a tubular structure that connects the second cavity 230 of the second bladder body 222 with the outside world to enable inflation and deflation of the airbag 220. The air nozzle 260 is located at the end of the second bladder body 222, midway between the ends. The air nozzle 260 corresponds to the second connecting portion 227. When the air nozzle 260 is opened, as gas enters the second cavity 230 through the air nozzle 260, the air nozzle 260 and the second vent hole 2271 of the second connecting portion 227 correspond in opposite directions along the length of the second bladder body 222, allowing the gas to quickly enter the first bladder body 221 through the second bladder body 222.

[0057] Please refer to Figures 7 and 8a. Figure 7 is a schematic diagram of the structure of the reinforcement member shown in Figure 3, and Figure 8a is a schematic cross-sectional diagram of an embodiment of the first bladder body in Figure 2. Unlike the second bladder body, the first bladder body 221 in this embodiment further includes two reinforcement members 240. The reinforcement members 240 are disposed within the first bladder body 221, and the two reinforcement members 240 are located on either side of the width of the airbag 220. Specifically, the reinforcement members 240 are strip-shaped, flexible thin sheets, and the hardness of the reinforcement members 240 is higher than that of the first support portion 224. The reinforcement members 240 are located within the first cavity 226 (the inner surface of the first support portion 224) and are laminated to the first support portion 224 of the first bladder body 221. In other embodiments, the reinforcement members 240 are located on the outer surface of the first support portion 224. Along the width direction of the airbag 220 , the two reinforcing pieces 240 are located on opposite sides of the first connecting portion 223 and are spaced apart. It can also be understood that the two reinforcing pieces 240 are fixed to the first supporting portions 224 on opposite sides of the first connecting portion 223 .

[0058] The reinforcing piece 240 extends along the length of the first bladder 221, and the orthographic projection of the reinforcing piece 240 on the first support portion 224 is less than or equal to the first support portion 224. This can be understood as the length of the reinforcing piece 240 being less than or equal to the length of the first support portion 224, and the width of the reinforcing piece 240 being less than or equal to the width of the first support portion 224. In this embodiment, the reinforcing piece 240 and the first support portion 224 are fixedly connected via a pressing process. In other embodiments, the reinforcing piece 240 and the first support portion 224 may be integrally formed. The two reinforcing pieces 240 serve to increase the hardness of the first support portion 224, thereby increasing the strength of the first bladder 221.

[0059] Specifically, the width of the reinforcement 240 is greater than or equal to 1 mm and less than or equal to 7 mm. When the wearable electronic device 1000 is worn on the user's wrist, the first bladder 221 and the second bladder 222 are inflated. Due to the contact between the first bladder 221 and the wrist, the wristband 200 and the arm exert a clamping force on the bladder 220 during inflation. The first support portion 224 is located between the first connecting portion 223 and the first main layer 225. The first support portion 224 is provided with the reinforcement 240. The reinforcement 240 has sufficient strength to support the first support portion 224 when the first bladder 221 deforms, preventing the first support portion 224 from shifting away from the first connecting portion 223 during deformation. This prevents the first bladder 221 from shifting from the gap between the first wristband 200a and the user's wrist, that is, protruding from the side of the first wristband 200a in the width direction and deviating from the pulse position, thereby avoiding affecting the measurement accuracy of the wearable electronic device 1000 and ensuring the accuracy of test data collection.

[0060] In other embodiments, there is only one reinforcing piece 240 , which is disposed on the first supporting portion along the extending direction of the first supporting portion 224 . It can be understood that the reinforcing piece 240 is an annular structure.

[0061] It should be noted that when the airbag 220 is inflated, the first support portion 224 and the second support portion 228 are spaced apart from each other along the thickness direction of the first wristband 200a. In this embodiment, the reinforcing member 240 is rectangular, and its two ends along the length direction of the first bladder 221 (the X-axis direction in the figure) have chamfered contours. In other embodiments, such as Figure 8b, which is a schematic cross-sectional view of a second embodiment of the first bladder in Figure 2, the reinforcing member 240 is rectangular, with two semicircular arc contours at its two ends.

[0062] In some embodiments, the reinforcing member 240 has a hollow structure, which can reduce the bending stress of the reinforcing member 240. Please refer to Figures 8c and 8d. Figure 8c is a schematic cross-sectional view of a third embodiment of the first bladder in Figure 2, and Figure 8d is a schematic cross-sectional view of a fourth embodiment of the first bladder in Figure 2. The reinforcing member 240 has multiple hollow portions 241, each of which extends through the thickness of the first bladder 221 (reinforcing member 240). In this embodiment, the hollow portions can be either holes or notches.

[0063] In one embodiment, the hollow portion 241 extends through one side of the reinforcing member 240 in the width direction. Specifically, the hollow portion 241 is a notch structure that extends through the edge of the reinforcing member 240, thereby increasing the flexibility of the reinforcing member 240 and preventing the first support portion 224 from wrinkling due to excessive stress on the reinforcing member 240 during the expansion of the first bladder 221.

[0064] In this embodiment, multiple hollow portions 241 are spaced apart along the length of the first bladder 221 (the X-axis in the figure). The spacing between each pair of hollow portions 241 is uniform; in other embodiments, the spacing between each pair of hollow portions 241 may vary. This uniform spacing between each pair of hollow portions 241 ensures uniform stress on the reinforcing member 240, thereby ensuring uniform support for the first support portion and preventing uneven localized pressure that could affect detection results.

[0065] In this embodiment, the two reinforcing members 240 are symmetrical, and the hollow portions 241 of the two reinforcing members 240 are symmetrical about the width of the connection area 231. In other embodiments, the reinforcing members 240 on both sides of the width of the connection area 231 may also be asymmetrical. The symmetrical arrangement of the two reinforcing members 240 can ensure uniform deformation of the first bladder 221.

[0066] The hollow portion 241 can be rectangular (as shown in FIG8c ), semicircular (as shown in FIG8d ), curved (as shown in FIG8e ), or wavy (as shown in FIG8f ). The hollow portion 241 is used to reduce the bending stress of the reinforcing member 240 , thereby increasing the flexibility of the reinforcing member 240 and preventing the deformation of the airbag 220 during inflation due to excessive stress in the reinforcing member 240 .

[0067] In one embodiment, each hollow portion 241 is aligned with the center of each vent 232 along the width of the connection region 231. In one embodiment, the hollow portions and vents 232 are of regular shape, with their centerlines coinciding with the centerlines of the vents (dashed lines in the figure). In other embodiments, the centerlines of each hollow portion and each vent 232 may be offset along the width of the connection region 231.

[0068] In one embodiment, the opening of the hollow portion 241 is positioned toward the connection region 231. Along the width of the connection region 231, the opening of each hollow portion 241 is aligned with the center of each vent 232. Upon inflation of the airbag, the main body layer surrounding the vent 232 deforms, with the portion of the main body layer surrounding the center of the vent 232 deforming more significantly toward the opening of the hollow portion 241. The opening of the hollow portion 241 provides sufficient space for deformation. In other embodiments, the opening of the hollow portion 241 may be positioned away from the connection region 231.

[0069] In one embodiment, the reinforcing member 240 can be composed of multiple strips, as shown in Figure 8g. Specifically, the reinforcing member 240 includes a first reinforcing member 2401 and multiple second reinforcing members 2402. The first and second reinforcing members 2401 and 2402 are spaced apart along the width of the first bladder 221, and the multiple second reinforcing members 2402 are evenly spaced along the length of the first bladder 221. The length of the first reinforcing member 2401 is greater than the length of the second reinforcing member. In this embodiment, three second reinforcing members 2402 are provided. The combined length of the three second reinforcing members 2402 and the spacing between each two second reinforcing members 2402 equals the length of the first reinforcing member 2401. The second reinforcing members 2402 are located on either side of the connecting region 231 in the width direction of the connecting region 231. The plurality of second reinforcement bodies 2402 of the reinforcement piece 240 are arranged at intervals, and the interval areas correspond to some of the vents, thereby providing deformation space for some of the vents when they are deformed.

[0070] In one embodiment, there is one reinforcing member 240. Specifically, the reinforcing member 240 may be disposed around the connection region 231 and stacked on the first support portion 224. In other embodiments, the reinforcing member may be located only on one side of the connection region 231 in the width direction.

[0071] The double-layered airbag design of the airbag 220 of the wearable electronic device 1000 provided in this embodiment ensures that the airbag 220 exerts sufficient pressure on the user's wrist when inflated, thereby improving the accuracy of test data. After the user activates the blood pressure measurement function, gas enters the second cavity 230 of the airbag 220 through the air nozzle 260, then enters the first cavity 226 through the vent 232, and finally fills the entire airbag 220 with gas before performing a blood pressure measurement. During the inflation process, the reinforcement member 240 provided on the first support portion 224 of the airbag 220 increases the strength of the first support portion 224, thereby improving the strength of the first bladder 221. This also prevents the first bladder 221 from being clamped by the first wristband 200a and the user's wrist during inflation, causing it to bulge out of the gap between the first wristband 200a and the user's wrist and become displaced. This ensures the accuracy of the test data collected by the wearable electronic device 1000. Among them, the reinforcement piece 240 is penetrated by multiple hollow parts 241, which reduces the bending stress of the reinforcement piece 240, thereby improving the bendability of the reinforcement piece 240. When the first bag 221 is inflated, the reinforcement piece 240 bends along with the deformation of the first support part 224, and there will be no situation where the deformation of the airbag 220 during inflation is restricted due to the excessive hardness of the reinforcement piece 240.

[0072] In one embodiment, the airbag 220 may further include a third bladder (not shown), which further includes a third cavity. The third bladder is stacked with the first bladder 221 and the second bladder 222, and the third bladder is located between the first bladder 221 and the second bladder 222. The structure of the third bladder is substantially the same as that of the first bladder, including a fifth main body layer (including a third support portion) and a sixth main body layer (including a fourth support portion). The periphery of the fifth main body layer is connected to the periphery of the sixth main body layer and encloses a third cavity. The fifth main body layer is provided with a fourth ventilation hole. The sixth main body layer is provided with a third ventilation hole.

[0073] Along the thickness of the airbag, the first, third, and second bladders 221, 222 are sequentially connected. The connecting portion between the first and third bladders 221 and 222 forms a connecting zone, while the connecting portion between the third and second bladders 222 forms a connecting zone. These two connecting zones are formed by the abutment of the vents of the first, third, and second bladders 221, 222. For detailed structural relationships, please refer to the connection relationship between the first and second bladders and will not be described here. When the airbag 220 is inflated, i.e., the first, second, and third cavities 226, 230, and 230 are filled with gas, the first, second, and third bladders 221, 222, and 223 all deform and expand.

[0074] In this embodiment, the reinforcing member 240 is located within the first cavity 226 and is stacked on the first support portion 224 of the first bladder 221. In other embodiments, the reinforcing member may be located within the third cavity and stacked on the third and fourth support portions of the third bladder; the reinforcing member 240 may also be stacked on both the third support portion and the first support portion 224. In other embodiments, the airbag may have four or more bladders, and the reinforcing member may be adaptively positioned within each of these bladders, which are not listed here.

[0075] Please refer to Figure 9, which is a schematic cross-sectional view of the airbag shown in Figure 3 from another angle. The first bladder body 221 is also provided with a sensor 250. The first main body layer 225 is provided with a fitting area 270. The fitting area 270 is the area where the first bladder body 221 fits against the user's wrist when the wearable electronic device 1000 is worn. The sensor 250 is located within the first cavity 226 and is embedded in the first main body layer 225. The sensor 250 is used to collect pulse wave signals from the user's wrist artery. The sensor 250 has a wire 251. The wire 251 passes through the first cavity 226 and the vent 232 of the connection area 231, then extends into the second cavity 230 and extends from the air nozzle 260. It is used to electrically connect the sensor 250 to the circuit board or identification device in the main body 100 to achieve electrical conduction between the sensor 250 and the main body 100. Specifically, the sensor 250 is a pulse wave sensor (including but not limited to a pressure sensor). When the user uses the wearable electronic device 1000, the airbag 220 is started to inflate by operating the control interface of the display screen 110 of the main body 100. The second bag 222 and the first bag 221 of the first wristband 200a are inflated, and the expanded first bag 221 fits the user's wrist. The sensor 250 of the first bag 221 is subjected to the pressure of the first bag 221 and is tightly attached to the user's wrist skin to collect the pulse wave signal of the wrist artery of the user wearing the wearable electronic device 1000.

[0076] Please refer to Figures 10a and 10b. Figure 10a is a schematic structural diagram of one embodiment of the airbag in Figure 2, and Figure 10b is a schematic structural diagram of another embodiment of the airbag in Figure 2. The user's wrist arteries include the ulnar artery and the radial artery, both of which can be detected by the sensor 250 and collected as pulse signals. When the user wears the wearable electronic device 1000, the first bladder 221 of the first wristband 200a covers both the user's ulnar artery and the radial artery. That is, the first main layer 225 of the first bladder 221 covers both the user's ulnar artery and the radial artery. Along the length of the airbag, the connection area 231 is divided into a first portion and a second portion. The vent 232 is divided into a plurality of first sub-holes 232a and a plurality of second sub-holes 232b. The first sub-holes 232a are located in the first portion, and the second sub-holes 232b are located in the second portion. The cross-sectional area of ​​the first sub-holes 232a is larger than that of the second sub-holes 232b. The plurality of first sub-holes 232a are spaced apart along the length of the first bladder 221. The multiple first sub-holes 232a have the same shape and cross-sectional area. The multiple second sub-holes 232b are spaced apart along the length of the first bladder 221. The multiple second sub-holes 232b have the same shape and cross-sectional area. In one embodiment, the first sub-holes 232a are rectangular, and the second sub-holes 232b are circular, as shown in Figure 10a. The cross-sectional area of ​​the first sub-holes 232a is larger than that of the second sub-holes 232b. This means that the ventilation area of ​​the first sub-holes 232a is larger than that of the second sub-holes 232b. When the airbag 220 is inflated, as the air enters the first cavity 226 from the second cavity 230, the ventilation rate through the first sub-holes 232a is higher than the ventilation rate through the second sub-holes 232b. This causes the area of ​​the first bladder 221 corresponding to the first sub-holes 232a to expand faster, thereby increasing the detection sensitivity of the airbag relative to the radial artery. In other embodiments, a pulse wave sensor may be provided within the first bladder 221.

[0077] In this embodiment, the cross-sectional area of ​​the first sub-hole 232a is larger than the cross-sectional area of ​​the second sub-hole 232b. This allows accurate detection of the radial artery pulse signal while filtering out the ulnar artery pulse signal, thereby preventing the ulnar artery signal from interfering with the radial artery signal. In other embodiments, the first sub-hole 232a is shaped like a special shape, and the second sub-hole 232b is circular, as shown in FIG10b. The cross-sectional area of ​​the first sub-hole 232a is larger than the cross-sectional area of ​​the second sub-hole 232b. In other embodiments, the second portion of the connection area 231 is not provided with a vent. This allows for more accurate and rapid detection of the radial artery pulse signal.

[0078] The wristband 200 also includes a locking portion 280 for connecting and securing the first wristband 200a to the second wristband 200b. In this embodiment, the locking portion 280 includes a buckle 281, a stud 282, and a buttonhole 283. Specifically, the buckle 281 and stud 282 are provided on the first wristband 200a, and the buttonhole 283 is provided on the second wristband 200b. Alternatively, the buckle 281 and stud 282 are provided on the second wristband 200b, and the buttonhole 283 is provided on the first wristband 200a.

[0079] In this embodiment, a buckle 281 and a rivet 282 are provided at one end of the first wristband 200a, and a buckle hole 283 is provided on the second wristband 200b. The buckle 281 is a rectangular ring structure having two oppositely disposed ends. One end of the buckle 281 is connected and fixed to the end of the first wristband 200a away from the second retaining portion, and the rivet 282 is connected to the other end of the buckle 281. Multiple buckle holes 283 are arranged at intervals on the second wristband 200b along the length direction of the second wristband 200b (the X-axis direction in the figure). The buckle holes 283 penetrate the second wristband 200b along the thickness direction of the second wristband 200b (the Z-axis direction) and are used to pass the rivet 282 of the first wristband 200a. When the user wears the wearable electronic device 1000, the first wristband 200a and the second wristband 200b are wrapped around the user's wrist, and the buckle 282 is passed through the buttonhole 283 of the second wristband 200b. The user selects a suitable buttonhole 283 from multiple buttonholes 283 according to the size of the wrist and passes the buckle 282 through the buttonhole 283 to connect and fix the first wristband 200a and the second wristband 200b.

[0080] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An airbag, characterized in that: The airbag comprises a first bladder body and a second bladder body, wherein the first bladder body and the second bladder body are stacked in a thickness direction of the airbag. The first capsule body includes a first main body layer and a second main body layer, the first main body layer and the second main body layer are connected to form a first cavity, the second capsule body includes a third main body layer and a fourth main body layer, the third main body layer and the fourth main body layer are connected to form a second cavity, the first cavity and the second cavity are connected, The first bladder body and the second bladder body are stacked, the second main body layer and the fourth main body layer are partially connected to form a connection area, the area where the second main body layer and the fourth main body layer are not connected is a non-connection area, and a reinforcing member is stacked on the non-connection area, and the reinforcing member is adjacent to the connection area. The airbag is inflated, the first cavity and the second cavity are inflated, the first bladder and the second bladder layers expand along the thickness direction of the airbag, and the reinforcing piece drives the non-connected area of ​​the second main body layer away from the fourth main body layer.

2. The airbag according to claim 1, characterized in that: The reinforcing piece is provided with a plurality of hollow parts, and the plurality of hollow parts are arranged at intervals along the length direction of the reinforcing piece, and each of the hollow parts penetrates the reinforcing piece along the thickness direction of the first bladder.

3. The airbag according to claim 2, characterized in that: Each of the hollow portions is provided with an opening, and the opening passes through one side of the reinforcing member in the width direction.

4. The airbag according to claim 3, characterized in that: The connection area is provided with a plurality of ventilation holes, and the plurality of ventilation holes connect the first cavity and the second cavity. The plurality of ventilation holes are arranged at intervals along the length direction of the connection area. Along the width direction of the connection area, the plurality of ventilation holes are opposite to the plurality of hollow parts one by one, the openings face the ventilation holes, and the middle areas of the ventilation holes are opposite to the openings of the hollow parts.

5. The airbag according to claim 1, characterized in that: The hardness of the reinforcing member is greater than the hardness of the first bladder.

6. The airbag according to any one of claims 1 to 5, characterized in that: Along the width direction of the first bladder, the width of the reinforcing piece is less than or equal to the width of the non-connecting area.

7. The airbag according to claim 2, characterized in that: The distance between every two hollow parts is the same.

8. The airbag according to claim 1, characterized in that: The connection area is provided with a plurality of vents, and the plurality of vents connect the first cavity and the second cavity; the connection area is divided into a first part and a second part, and at least some of the plurality of vents are located in the first part; Alternatively, some of the plurality of ventilation holes are located in the first part, and another part is located in the second part, and the number of ventilation holes in the first part is the same as the number of ventilation holes in the second part, and the cross-sectional area of ​​the ventilation holes in the first part is greater than the cross-sectional area of ​​the ventilation holes in the second part.

9. The airbag according to any one of claims 1 to 5, characterized in that: Two ends of the reinforcing piece along the length direction of the first bladder have chamfered profiles or semicircular arc profiles.

10. The airbag according to any one of claims 1 to 5, characterized in that: The reinforcing member is fixedly connected to the second main body layer through a pressing process.

11. The airbag according to any one of claims 1 to 5, characterized in that: The airbag includes a third bag body, which is stacked between the first bag body and the second bag body. The third bag body includes a fifth main body layer and a sixth main body layer. The fifth main body layer and the sixth main body layer are respectively connected to the second main body layer and the fourth main body layer. The fifth main body layer and the sixth main body layer have a non-connecting area. The reinforcement is provided on the non-connecting area of ​​the fifth main body layer, and / or the reinforcement is provided on the non-connecting area of ​​the sixth main body layer.

12. The airbag according to claim 1, characterized in that The airbag includes a sensor, an air nozzle and a wire. The sensor is arranged in the first cavity. The air nozzle is arranged at one end of the second bag body and connects the outside with the second cavity. The wire is connected to the sensor and extends out from the air nozzle through the first cavity, the vent hole and the second cavity.

13. A wristband, characterized in that: The invention comprises a belt body and the airbag according to any one of claims 1 to 12, wherein the airbag is arranged on one side of the belt body, and the second bag body is connected to the belt body.

14. The wristband according to claim 13, characterized in that: The belt body and the airbag are an integrated structure.

15. A wearable electronic device, characterized in that: It comprises a body and a wristband as claimed in claim 13 or claim 14, wherein the wristband is connected to two opposite ends of the body along the length direction, and the airbag is arranged on the inner side of the wristband.

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