Air bag, wrist strap and wearable electronic equipment

Abstract

The invention provides an air bag, a wrist strap and wearable electronic equipment. The air bag comprises a first bag body and a second bag body, the first bag body and the second bag body are stacked in the thickness direction of the air bag, 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 define a first cavity, and 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 define a second cavity, the first cavity is communicated with the second cavity, the second main body layer and the fourth main body layer are partially connected and form a connecting area, the area where the second main body layer and the fourth main body layer are not connected is a non-connecting area, reinforcing pieces are arranged in the non-connecting area in an overlapped mode and are adjacent to the connecting area, and the air bag is inflated. The first capsule body and the second capsule body layer expand in the cavity thickness direction, and the reinforcing piece drives the non-connection area of the second main body layer to be away from the fourth main body layer. The reinforcing piece can improve the strength of the first bag body, and the situation that the function of the first bag body is affected due to deviation during inflation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic devices, and particularly to an airbag, a wristband and a wearable electronic device. Background Art

[0002] With the progress and development of technology, some wearable electronic devices (such as smart bracelets, smart watches, etc.) have health monitoring functions such as blood pressure measurement. Taking a smart watch as an example, when a user measures blood pressure, the strap of the electronic device is worn on the wrist, and the airbag on the strap inflates. The user's wrist artery is compressed by the airbag, so that the pressure sensor on the side of the airbag close to the hand extracts the user's pulse signal, and the blood pressure of the user is calculated through calculation. If the stability of blood pressure measurement is to be ensured, it is required that the airbag has sufficient width. However, a larger width of the airbag will cause discomfort such as stuffiness when the user wears it. Therefore, providing one that can both ensure the stability of blood pressure measurement and have wearing comfort has become a difficult problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0003] The present application provides an airbag, a wristband and a wearable electronic device for improving the stability of airbag measurement while ensuring that the wearable electronic device has sufficient wearing comfort.

[0004] The present application provides an airbag, including a first bladder and a second bladder. The first bladder and the second bladder are stacked in the thickness direction of the airbag. The first bladder includes a first main layer and a second main layer. The first main layer and the second main layer are connected and enclose a first cavity. The second bladder includes a third main layer and a fourth main layer. The third main layer and the fourth main layer are connected and enclose a second cavity. The first cavity and the second cavity are communicated. The first bladder and the second bladder are stacked. The second main layer and the fourth main layer are partially connected to form a connection area. The area where the second main layer and the fourth main layer are not connected is a non-connection area. A reinforcing member is stacked in the non-connection area. The reinforcing member is adjacent to the connection area. When the airbag is inflated, the first cavity and the second cavity are inflated, and the first bladder and the second bladder expand along the thickness direction of the cavity. The reinforcing member drives the non-connection area of the second main layer away from the fourth main layer.

[0005] In a first aspect, in the embodiments of the present application, the airbag is disposed on the wristband, the wristband is disposed on the wearable electronic device, the wristband wears the wearable electronic device on the user's wrist, and the reinforcing member has sufficient strength to support the non-connection area when the first airbag deforms, preventing the non-connection area from shifting away from the connection area during deformation, that is, preventing offset deformation in the width direction of the airbag, so as to avoid the first airbag shifting from the gap between the wristband and the wrist, thereby avoiding the first airbag deviating from the position of the user's pulse and affecting the measurement accuracy of the wearable electronic device.

[0006] In one embodiment, the reinforcing member is provided with several hollow portions, and the plurality of hollow portions are arranged at intervals along the length direction of the reinforcing member, and each hollow portion penetrates the reinforcing member along the thickness direction of the first airbag. The hollow portions can reduce the stress of the reinforcing member and avoid wrinkles in the non-connection area caused by excessive stress of the reinforcing member when the first airbag expands. The hollow portions are through-hole structures and their shapes are not limited.

[0007] In one embodiment, each of the hollow portions is provided with an opening, and the opening penetrates one side in the width direction of the reinforcing member. The setting of the opening can enhance the function of the hollow portion and release more stress of the reinforcing member. The opening can face the connection area or face away from the connection area. The contour of the opening can be a semicircle, three-quarters circle, curved surface or arc. Several openings are spaced along the length direction of the reinforcing member to form a curved surface, and this curved surface can be wavy.

[0008] In one embodiment, the connection area is provided with several ventilation holes, and the plurality of ventilation holes communicate the first cavity and the second cavity. The several ventilation holes are arranged at intervals along the length direction of the connection area. Along the width direction of the connection area, the several ventilation holes are in one-to-one correspondence with the several hollow portions, the opening faces the ventilation hole, and the middle area of the ventilation hole is opposite to the opening of the hollow portion. When the first airbag expands and the second main body layer deforms, the ventilation holes will deform, and the surrounding connection area will deform in the width direction of the connection area (the width direction of the first airbag), and the opening provides a deformation space for the deformation of the ventilation hole.

[0009] In one embodiment, the hardness of the reinforcing member is greater than the hardness of the first airbag to achieve strong support for the non-connection area and prevent the non-connection area from shifting.

[0010] In one embodiment, along the width direction of the first airbag, the width of the reinforcing member is less than or equal to the width of the first support portion to ensure the effective reinforcement of the reinforcing member. The width of the reinforcing member is greater than or equal to 1 mm and less than or equal to 7 mm.

[0011] In one embodiment, the distance between every two of the hollow portions is the same, so as to improve the stress uniformity of the reinforcing member, and further ensure the uniformity of the support for the first bladder.

[0012] In one embodiment, the connection area is provided with several ventilation holes, and the plurality of ventilation holes communicate 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; alternatively, some of the plurality of ventilation holes are located in the first part and the other 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 a radial artery pulse signal and an 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 passing through the first sub-hole is higher than the ventilation speed of the gas passing through the second sub-hole during the process of the gas entering the first cavity from the second cavity, so that the area of the contact surface between the first bladder and the area corresponding to the first sub-hole and the wrist is larger, and the pulse signal of the ulnar artery can be filtered while accurately detecting the pulse signal of the radial artery, and then the desired pulse signal can be obtained.

[0013] In one embodiment, the two ends of the reinforcing member along the length direction of the first bladder have a chamfered profile or a semi-circular arc profile.

[0014] 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 a hot pressing method to realize the integration of the reinforcing member and the first support portion, improve the connection stability, and ensure that the first support portion can be deformed.

[0015] In one embodiment, the airbag includes a third bladder, the third bladder is stacked between the first bladder and the second bladder, the third bladder 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 partially 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, and the reinforcing member is provided on the non-connection area of the fifth main body layer, and / or the reinforcing member is provided on the non-connection area of the sixth main body layer.

[0016] In one embodiment, the airbag includes a sensor, an air nozzle, and a wire. The sensor is disposed in the first cavity. The air nozzle is disposed at one end of the second bladder and communicates the outside with the second cavity. The wire is connected to the sensor and extends out of the air nozzle through the first cavity, the ventilation hole, and the second cavity. The wire extending out of the air nozzle does not require an additional opening on the airbag, ensuring the sealing performance of the airbag and thus ensuring the test performance.

[0017] In a second aspect, the present embodiment provides a wristband, which includes a band body and the airbag described above. The airbag is disposed on one side of the band body, and the second bladder is connected to the band body. The reinforcing member has sufficient strength to support the first bladder when the first bladder deforms, preventing the first bladder from shifting during deformation and ensuring the stability of the relative position between the airbag and the human body.

[0018] In one embodiment, the band body and the airbag are of an integral structure. The integral structure of the band body and the airbag can improve the stability of the connection between the airbag and the band body during the inflation and deflation processes of the airbag.

[0019] In a third aspect, the present embodiment provides a wearable electronic device, which includes a main body and the wristband described above. The wristband is connected to two opposite ends of the main body along the length direction, and the airbag is disposed on the inner side of the wristband. The double-layer airbag structure design of the airbag of the wearable electronic device provided in the present application ensures that when the airbag is in an inflated state, sufficient pressure is generated on the user's wrist to improve the accuracy of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the wearable electronic device provided in the embodiment of the present application;

[0022] Figure 2 is Figure 1 a schematic cross-sectional structure diagram of the first wristband in;

[0023] Figure 3 is Figure 1 a schematic structural diagram of the airbag shown;

[0024] Figure 4 is Figure 3 a schematic exploded structural diagram of the airbag shown;

[0025] Figure 5Yes Figure 3 Exploded view of the airbag shown from another angle;

[0026] Figure 6 Yes Figure 3 Cross-sectional structure diagram of the airbag shown;

[0027] Figure 7 Yes Figure 3 Structure diagram of the reinforcing member shown;

[0028] Figure 8a Yes Figure 2 Schematic cross-sectional diagram of an embodiment of the first bladder in ;

[0029] Figure 8b Yes Figure 2 Schematic cross-sectional diagram of a second embodiment of the first bladder in ;

[0030] Figure 8c Yes Figure 2 Schematic cross-sectional diagram of a third embodiment of the first bladder in ;

[0031] Figure 8d Yes Figure 2 Schematic cross-sectional diagram of a fourth embodiment of the first bladder in ;

[0032] Figure 8e Yes Figure 2 Schematic cross-sectional diagram of a fifth embodiment of the first bladder in ;

[0033] Figure 8f Yes Figure 2 Schematic cross-sectional diagram of a sixth embodiment of the first bladder in ;

[0034] Figure 8g Yes Figure 2 Schematic cross-sectional diagram of a seventh embodiment of the first bladder in ;

[0035] Figure 9 Yes Figure 3 Cross-sectional structure diagram of the airbag shown from another angle;

[0036] Figure 10a Yes Figure 2 Schematic structure diagram of an embodiment of the airbag in ;

[0037] Figure 10b Yes Figure 2 Schematic structure diagram of another embodiment of the airbag in.

[0038] The names corresponding to the reference numerals in the figures are as follows: 1000 electronic device, 100 main body, 200 wristband, 200a first wristband, 200b second wristband, 110 display screen, 120 rear housing, 130 middle frame, 210 belt body, 220 airbag, 221 first bladder, 222 second bladder, 223 first connecting portion, 2231 first ventilation hole, 224 first supporting portion, 225 first main body layer, 226 first cavity, 227 second connecting portion, 2271 second ventilation hole, 228 second supporting portion, 229 third main body layer, second cavity 230, 231 connecting area, 232 ventilation hole, 232a first sub-hole, 232b second sub-hole, 240 reinforcing member, 241 hollow portion, 250 sensor, 251 wire, 260 air nozzle, 270 fitting area, 280 locking portion, 281 buckle, 282 buckle pin, 283 buckle hole. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0040] For the convenience of understanding, first, the terms involved in the embodiments of the present application will be explained.

[0041] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a wearable electronic device provided by an embodiment of the present application. The wearable electronic device 1000 can be, but is not limited to, wearable electronic devices such as watches and bracelets, and can be applied 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 at any time and monitor the user's physical condition. In the embodiments of the present application, the wearable electronic device 1000 is described by taking a smart watch as an example. The basic principle of a smart watch for measuring blood pressure is as follows: when the user uses the smart watch to measure blood pressure, the smart watch is worn on the user's wrist, and the wristband of the smart watch together with the airbag on the wristband simultaneously surrounds the user's wrist and covers the ulnar artery and radial artery of the user. Through the UI control interface on the smart watch, the air nozzle is driven to inflate the airbag, the airbag is pressurized and inflated, and the artery is compressed. The sensor located on the side of the airbag close to the hand collects the pulse signal of the user's wrist artery, and the user's blood pressure is obtained through the relevant processing module.

[0042] For the convenience 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 pairwise. It should be noted that the orientation terms such as "up" and "down" involved in this application are described with reference to the orientation shown in the appendix Figure 1 and are described with the positive Z-axis direction as "up" and the negative Z-axis direction as "down". It does not indicate or imply that the indicated device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0043] The wearable electronic device 1000 includes a main body 100 and a wristband 200. 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 integral 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 two opposite ends of the main body 100 along the length direction (the illustrated X direction). Specifically, two opposite ends of the main body 100 along the length direction are provided with first clamping portions (not shown in the figure) for connecting the main body 100 to the first wristband 200a and the second wristband 200b. 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 fixed to each other. Among them, the wristband 200 can be made of a plastic material, or a leather belt, or can also be fiber woven.

[0044] The main body 100 includes a display screen 110, a rear case 120, a middle frame 130, a processor (not shown in the figure), a circuit board (not shown in the figure), a power supply module (not shown in the figure), etc. The rear case 120 is installed on one side of the middle frame 130 and encloses a receiving space with the middle frame 130. The display screen 110 is installed on the other side of the middle frame 130 and is disposed opposite to the rear case 120 along the thickness direction of the middle frame 130, and closes the receiving space formed by the middle frame 130 and the rear case 120. The display screen 110 displays a control interface and the user's blood pressure for the wearable electronic device 1000. The processor, the circuit board, the power supply module, etc. are installed in the receiving space formed by the rear case 120 and the middle frame 130. Among them, the power supply module is electrically connected to the circuit board to supply 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 installed on the circuit board and is used to process the user's pulse signal data and drive the display screen 110 to display the user's blood pressure. The display screen 110 can be disposed on the panel of the main body 100 or can be used as the panel of the entire main body 100. The display screen is used to control the wearable electronic device 1000 and display contents such as incoming call information, news, function information, etc., and synchronize functions in the mobile phone such as phone calls, text messages, health monitoring structures, photos, music, etc. The display screen 110 can adopt 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 disposed in the main body 100 or can be disposed on the wristband 200. The wearable electronic device 1000 further includes a memory, a communication module, an antenna, etc., and the memory, the communication module, the antenna are electrically connected to the circuit board.

[0045] Please refer to Figure 2 and Figure 3 , Figure 2 is Figure 1 a schematic cross-sectional structure diagram of the first wristband in Figure 3 is Figure 1 a schematic structure diagram of the airbag shown. The first wristband 200a is a strip structure, which includes a belt body 210 and a second clamping portion (not shown in the figure). The belt body 210 includes two opposite ends (not labeled in the figure), and the two ends are the two opposite ends in the length direction of the first wristband 200a. The second clamping portion is disposed at one end of the first wristband 200a and is used for fixedly connecting with a first clamping portion (not shown in the figure) of the main body 100 to realize 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 in the figure) for fixedly connecting with another first clamping portion (not shown in the figure) of the main body 100.

[0046] The wearable electronic device 1000 further includes an airbag 220, and the airbag 220 is arranged on the wristband 200. The airbag 220 can be automatically inflated or deflated to realize the function of measuring blood pressure, and the test result is displayed through the display screen 110 of the wearable electronic device 1000. The wearable electronic device 1000 is provided with functional devices that can cooperate with the airbag 220 to convert the signals detected by the airbag into pulse signals and can read the signals. The material of the airbag 220 can be leather or an elastic non-breathable flexible material. The airbag 220 and the wristband 200 can be fixed by, but not limited to, pressing or bonding. In this embodiment, the airbag 220 and the wristband 200 are fixedly connected by pressing. The wristband 200 together with the airbag 220 surrounds the user's wrist, and the airbag 220 contacts the user's wrist. In this embodiment, the airbag 220 is arranged on one side of the first wristband 200a. Of course, the airbag 220 can also be arranged on one side of the second wristband 200b.

[0047] 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 integral structure, which can improve the stability of the connection between the airbag 220 and the belt body 210 during the inflation and deflation processes.

[0048] Please refer to Figure 4 and Figure 5 , Figure 4 is Figure 3 the exploded structural schematic diagram of the airbag shown, Figure 5 is Figure 3 the exploded schematic diagram of another angle of the airbag shown. In this embodiment, the airbag 220 includes a first bladder 221 and a second bladder 222, and the first bladder 221 and the second bladder 222 are laminated and fixedly connected in the thickness direction of the airbag 220. In this embodiment, the airbag 220 is a cuboid. In other embodiments, the airbag 220 can also be circular. The first bladder 221 is located on the side of the second bladder 222 away from the belt body 210. It can be understood that the first bladder 221 is arranged on the side of the first wristband 200a in contact with the user's wrist.

[0049] Please refer to Figure 6 , Figure 6 is Figure 3Schematic cross-sectional structure diagram of the airbag shown. The first bladder 221 includes a first connecting portion 223, a first supporting portion 224, and a first main body layer 225. Along the circumferential direction of the first bladder 221, the first supporting portion 224 connects the first connecting portion 223 and the first main body layer 225, and the first supporting portion 224, the first connecting portion 223, and the first main body layer 225 enclose a first cavity 226. The first supporting portion 224 is located on the circumferential side of the first connecting portion 223. The first supporting portion 224 and the first connecting portion 223 are opposite to the first main body layer 225 in the thickness direction of the airbag. It can be understood that the first connecting portion 223 and the first supporting portion 224 are the second main body layer. The peripheral edge of the first main body layer 225 is connected to the peripheral edge of the second main body layer and encloses the first cavity 226. In this embodiment, the first bladder 221 is made of an elastic material. After being inflated, the first cavity 226 causes the first bladder 221 to expand, that is, the first connecting portion 223, the first supporting portion 224, and the first main body layer 225 will deform.

[0050] It should be noted that the first connecting portion 223, the first supporting portion 224, and the first main body layer 225 are of an integral structure. The first connecting portion 223 is provided with at least two first ventilation holes 2231. The first ventilation holes 2231 penetrate the first connecting portion 223 along the thickness direction of the first connecting portion 223 and communicate with 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. Among them, the shapes of the plurality of first ventilation holes 2231 are the same and the cross-sectional areas are the same. In other embodiments, the shapes and cross-sectional areas of the plurality of first ventilation holes 2231 may be different. The shape of the first ventilation hole 2231 may be rectangular, circular, or irregular.

[0051] The structure of the second bladder 222 is basically the same as that of the first bladder 221, including a second connecting portion 227, a second supporting portion 228, and a third main body layer 229. Along the circumferential direction of the second bladder 222, the second supporting portion 228 connects the second connecting portion 227 and the third main body layer 229, and the second supporting portion 228, the second connecting portion 227, and the third main body layer 229 enclose a second cavity 230. The second supporting portion 228 is located on the circumferential side of the second connecting portion 227. The second supporting portion 228 and the second connecting portion 227 are opposite to the third main body layer 229 in the thickness direction of the airbag. It can be understood that the second connecting portion 227 and the second supporting portion 228 are the fourth main body layer. The peripheral edge of the third main body layer 229 is connected to the peripheral edge of the fourth main body layer and encloses the second cavity 230. After being inflated, the second cavity 230 causes the second bladder 222 to expand, that is, the second connecting portion 227, the second supporting portion 228, and the third main body layer 229 will 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 of an integral structure. The second connecting portion 227 is provided with at least two second ventilation holes 2271. The second ventilation holes 2271 penetrate through the second connecting portion 227 along the thickness direction of the second connecting portion 227 and communicate with 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 bladder 222. Among them, the shapes of the plurality of second ventilation holes 2271 are the same and the cross-sectional areas are the same. 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 direction of the airbag 220, the first bladder 221 and the second bladder 222 are connected, and the second main body layer and the fourth main body layer are partially pressed together to form a connection area 231. The connection area 231 is provided with a plurality of ventilation holes 232. Specifically, the first connecting portion 223 of the first bladder 221 and the second connecting portion 227 of the second bladder 222 are press-fitted and connected by hot pressing to form the connection area 231 of the airbag 220. Among them, the first ventilation holes 2231 and the second ventilation holes 2271 correspond to each other one by one and communicate to form a plurality of ventilation holes 232. The ventilation holes 232 are located in the connection area 231 and communicate the first cavity 226 and the second cavity 230. The ventilation holes 232 penetrate through the first connecting portion 223 and the second connecting portion 227 simultaneously along the thickness direction of the first connecting portion 223 and the second connecting portion 227. The ventilation holes 232 are used for the gas flow between the first cavity 226 of the first bladder 221 and the second cavity 230 of the second bladder 222 when the airbag 220 is inflated or deflated. The connection area 231 is formed by pressing the first connecting portion 223 and the second connecting portion 227, that is, part of the second main body layer and part of the fourth main body layer are connected, and the hardness is greater than other areas of the airbag 220, which is more conducive to the gas flow between the first bladder 221 and the second bladder 222.

[0054] In this embodiment, the area on the first connecting portion 223 between every two first ventilation holes 2231 contacts but is not fixed to the area on the second connecting portion 227 before every two second ventilation holes 2271, that is, no pressing is performed. This part can be called the adjustment area, and the adjustment area is located in the connection area 231. When the gas inflates the first bladder 221 and the second bladder 222 through the ventilation holes, the adjustment area can improve the flexibility of the connection area and avoid affecting the deformation of the connection area. It should be noted that when inflating, the shape of the ventilation hole 232 will change. For example, in this embodiment, the ventilation hole 232 is rectangular, and the middle position of the ventilation hole 232 will expand and deform toward 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 disposed opposite to each other. When the airbag 220 is inflated, that is, when the first cavity 226 and the second cavity 230 are filled with gas, the first main body layer 225 of the first bladder 221 and the third main body 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 fact, both the first bladder 221 and the second bladder 222 are deformed and expanded. Specifically, the first bladder 221 and the second bladder 222 change their shapes and produce elastic deformations when the airbag 220 is inflated and expanded. Of course, the first bladder 221 and the second bladder 222 may not produce elastic deformations, or the elastic deformation is only a small amount of deformation.

[0056] The airbag 220 is further provided with an air nozzle 260. In this embodiment, the air nozzle 260 is disposed at one end of the second bladder 222. The air nozzle 260 may be integrally formed with the second bladder 222 or may be additionally installed on the second bladder 222. The air nozzle 260 has a tubular structure and is used for communicating the second cavity 230 of the second bladder 222 with the outside to realize the inflation and deflation of the airbag 220. The air nozzle 260 is located at the end of the second bladder 222 and at the middle position of the end of the second bladder 222. The air nozzle 260 corresponds to the second connecting portion 227. After the air nozzle 260 is opened, when the gas enters the second cavity 230 through the air nozzle 260, the second vent hole 2271 of the air nozzle 260 and the second connecting portion 227 correspond along the length direction of the second bladder 222 in the reverse direction, and the gas will quickly enter the first bladder 221 through the second bladder 222.

[0057] Please refer to Figure 7 and Figure 8a , Figure 7 is Figure 3 the structural schematic diagram of the reinforcing member shown, Figure 8a is Figure 22 is a schematic cross-sectional diagram of an embodiment of the first capsule 221. The difference between the first capsule 221 and the second capsule is that, in this embodiment, the first capsule 221 further includes two reinforcing members 240, which are arranged on the first capsule 221 and are located on both sides of the width direction of the airbag 220. Specifically, the reinforcing member 240 is a strip-shaped bendable strip-shaped thin sheet, and the hardness of the reinforcing member 240 is higher than the hardness of the first support portion 224. The reinforcing member 240 is located in the first cavity 226 (the inner surface of the first support portion 224) and is stacked on the first support portion 224 of the first capsule 221. In other embodiments, the reinforcing member 240 is located on the outer surface of the first support portion 224. Along the width direction of the airbag 220, the two reinforcing members 240 are located on opposite sides of the first connecting portion 223 and are arranged at intervals; it can also be understood that the two reinforcing members 240 are fixed on the first supporting portion 224 on opposite sides of the first connecting portion 223.

[0058] The reinforcing piece 240 extends along the length direction of the first capsule 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. It can be understood that the length of the reinforcing piece 240 is less than or equal to the length of the first support portion 224, and the width of the reinforcing piece 240 is 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 by a pressing process. In other embodiments, the reinforcing piece 240 and the first support portion 224 can be integrally formed. The two reinforcing pieces 240 are used to increase the hardness of the first support portion 224, that is, to increase the strength of the first capsule 221.

[0059] Specifically, the width of the reinforcing piece 240 is greater than or equal to 1 mm and less than or equal to 7 mm. When the user wears the wearable electronic device 1000 on the wrist, the first capsule 221 and the second capsule 222 are inflated. Since the first capsule 221 is in contact with the wrist, the wristband 200 and the arm generate a clamping force on the airbag 220 during the inflation process. The first support portion 224 is located between the first connection portion 223 and the first main body layer 225. The first support portion 224 is provided with a reinforcing piece 240. The reinforcing piece 240 has sufficient strength to support the first support portion 224 when the first capsule 221 is deformed, and prevents the first support portion 224 from deviating in a direction away from the first connection portion 223 when deformed, so as to avoid the first capsule 221 from deviating 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, so as to avoid affecting the measurement accuracy of the wearable electronic device 1000 and ensure the accuracy of the test data collection.

[0060] In other embodiments, there is only one reinforcing member 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 member 240 is an annular structure.

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

[0062] In some embodiments, the reinforcing member 240 is a hollow structure, which can reduce the bending stress of the reinforcing member 240. Please refer to Figure 8c and Figure 8d , Figure 8c is Figure 2 a schematic cross-sectional view of the third embodiment of the first bladder in Figure 8d is Figure 2 a schematic cross-sectional view of the fourth embodiment of the first bladder in

[0063] In one implementation, the hollow portion 241 penetrates one side of the width direction of the reinforcing member 240. That is, the hollow portion 241 is a notch structure, which penetrates the edge of the reinforcing member 240, can improve the flexibility of the reinforcing member 240, and prevent the first support portion 224 from wrinkling due to excessive stress of the reinforcing member 240 during the expansion of the first bladder 221.

[0064] In this embodiment, a plurality of hollow portions 241 are arranged at intervals along the length direction of the first bladder 221 (the X-axis direction in the figure). The distance between every two hollow portions 241 is the same. In other embodiments, the distance between every two hollow portions 241 can also be different. The same distance between every two hollow portions 241 can ensure the uniformity of the stress of the reinforcing member 240, and further ensure the uniformity of the support for the first support portion, avoiding uneven local pressure and affecting the detection effect.

[0065] In this embodiment, the two reinforcing members 240 are symmetrical, and the hollow portions 241 of the two reinforcing members 240 are symmetrical with respect to the width direction of the connection area 231. In other embodiments, the reinforcing members 240 on both sides of the width direction of the connection area 231 can also be asymmetrical. The two reinforcing members 240 are symmetrically arranged, which can ensure the uniformity of the deformation of the first bladder 221.

[0066] Among them, the shape of the hollow portion 241 can be rectangular (such as Figure 8c ), semi-circular (such asFigure 8d ) arc-shaped (such as Figure 8e ) or wavy (such as Figure 8f ). The hollow portion 241 is used to reduce the bending stress of the reinforcing member 240, thereby improving the flexibility of the reinforcing member 240 and avoiding restricting the deformation of the airbag 220 during inflation due to excessive stress of the reinforcing member 240.

[0067] In one embodiment, along the width direction of the connection area 231, the center area of each hollow portion 241 is opposite to that of each ventilation hole 232. In one implementation, the hollow portion and the ventilation hole 232 are regular shapes, and their center lines coincide with the center line of the ventilation hole (the dotted line in the figure). In other embodiments, along the width direction of the connection area 231, the center line of each hollow portion can also be offset from that of each ventilation hole 232.

[0068] In one embodiment, the opening of the hollow portion 241 faces the connection area 231. Along the width direction of the connection area 231, the opening of each hollow portion 241 is opposite to the center area of each ventilation hole 232; after the airbag is inflated and expanded, the main body layer around the ventilation hole 232 deforms, and the part of the main body layer around the center area of the ventilation hole 232 deforms greatly in the direction of the opening of the hollow portion 241, and the opening of the hollow portion 241 can just provide enough deformation space. In other embodiments, the opening of the hollow portion 241 can face away from the connection area 231.

[0069] In one embodiment, the reinforcing member 240 can be composed of a plurality of strips, such as Figure 8g shown. Specifically, the reinforcing member 240 includes a first reinforcing body 2401 and a plurality of second reinforcing bodies 2402. The first reinforcing body 2401 and the second reinforcing bodies 2402 are arranged at intervals along the width direction of the first bladder 221, and the plurality of second reinforcing bodies 2402 are evenly arranged at intervals along the length direction of the first bladder 221. The length of the first reinforcing body 2401 is greater than that of the second reinforcing body. In this embodiment, three second reinforcing bodies 2402 are provided, and the total length of the three second reinforcing bodies 2402 and the distance between every two second reinforcing bodies 2402 is equal to the length of the first reinforcing body 2401. The second reinforcing bodies 2402 are arranged on both sides of the connection area 231 in the width direction between the first reinforcing body 2401 and the connection area 231. The plurality of second reinforcing bodies 2402 of the reinforcing member 240 are arranged at intervals, and the interval area corresponds to some ventilation holes, which can provide deformation space for some ventilation holes during deformation.

[0070] In one embodiment, the number of the reinforcing members 240 is one. Specifically, the reinforcing member 240 can be arranged around the connection area 231 and laminated on the first support portion 224. In other embodiments, the reinforcing member can also be only on one side in the width direction of the connection area 231.

[0071] The structural design of the double-layer airbag of the airbag 220 of the wearable electronic device 1000 provided in this embodiment ensures that when the airbag 220 is in the inflated state, sufficient pressure is generated on the user's wrist to improve the accuracy of the test data. After the user activates the blood pressure measurement function, the gas enters the second cavity 230 of the airbag 220 through the air nozzle 260, enters the first cavity 226 through the ventilation holes 232, and then the entire airbag 220 is filled with gas for blood pressure detection. During the inflation process of the airbag 220, the reinforcing member 240 provided on the first support portion 224 of the airbag 220 increases the strength of the first support portion 224 of the airbag 220, so as to improve the strength of the first bladder 221. At the same time, it avoids the situation that during the inflation process of the first bladder 221, the first bladder 221 is subjected to the clamping force between the first wristband 200a and the user's wrist and bulges and is displaced from the gap between the first wristband 200a and the user's wrist, thereby ensuring the accuracy of the test data collection of the wearable electronic device 1000. Among them, the reinforcing member 240 is provided with a plurality of hollow portions 241, which reduces the bending stress of the reinforcing member 240, thereby improving the bendability of the reinforcing member 240. During the inflation and expansion of the first bladder 221, the reinforcing member 240 bends along with the deformation of the first support portion 224, and there will be no situation where the deformation of the airbag 220 during inflation is restricted due to the too high hardness of the reinforcing member 240.

[0072] In one embodiment, the airbag 220 may further include a third bladder (not shown in the figure), and the third bladder 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 disposed in the middle of the first bladder 221 and the second bladder 222. The structure of the third bladder is basically 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 the third cavity. The fifth main body layer is provided with fourth ventilation holes. The sixth main body layer is provided with third ventilation holes.

[0073] Along the thickness direction of the airbag, the first bladder 221, the third bladder and the second bladder 222 are sequentially connected. The connection part between the first bladder 221 and the third bladder is the connection area, and the connection part between the third bladder and the second bladder 222 is the connection area. The above two connection areas are formed by the butt joint of the ventilation holes of the first bladder 221, the third bladder and the second bladder 222. The specific structural relationship can refer to the connection relationship between the first bladder and the second bladder, which will not be elaborated here. When the airbag 220 is inflated, that is, the first cavity 226, the second cavity 230 and the third cavity are filled with gas, and the first bladder 221, the second bladder 222 and the third airbag 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 also be located within the third cavity and be stacked on the third support portion and the fourth support portion of the third bladder; the reinforcing member 240 may also be stacked on the third support portion and the first support portion 224 simultaneously. In other embodiments, the number of bladders of the airbag may be four or more, and the reinforcing member may be adaptively disposed within each bladder, which will not be enumerated one by one herein.

[0075] Please refer to Figure 9 , Figure 9 is Figure 3 a schematic cross-sectional structure diagram of the airbag shown from another angle. The first bladder 221 is further provided with a sensor 250. The first main body layer 225 is provided with a fitting area 270. Among them, the fitting area 270 is the area where the first bladder 221 fits against the user's wrist when the user wears the wearable electronic device 1000. 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 the pulse wave signal of the user's wrist artery. The sensor 250 has a wire 251. The wire 251 passes through the ventilation hole 232 of the first cavity 226 and the connection area 231, then extends into the second cavity 230 and extends out from the air nozzle 260, and is used to electrically connect the sensor 250 to the circuit board or the identification device within the main body 100, so as 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, by operating the control interface of the display screen 110 of the main body 100, the airbag 220 is inflated. The second bladder 222 and the first bladder 221 of the first wristband 200a are inflated. The inflated first bladder 221 fits against the user's wrist. The sensor 250 of the first bladder 221 is subjected to the pressure of the first bladder 221 and is pressed against 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 Figure 10a and Figure 10b , Figure 10a is Figure 2 a schematic structural diagram of an embodiment of the airbag in Figure 10b is Figure 2Schematic diagram of the structure of another embodiment of the middle airbag. The user's wrist arteries include the ulnar artery and the radial artery, and both the ulnar artery and the radial artery 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 ulnar artery and the radial artery of the user at the same time, that is, the first main body layer 225 of the first bladder 221 covers the ulnar artery and the radial artery of the user. Along the length direction of the airbag, the connection area 231 is divided into a first part and a second part, and the ventilation holes 232 are divided into a plurality of first sub-holes 232a and a plurality of second sub-holes 232b. The first sub-holes 232a are within the first part, and the second sub-holes 232b are within the second part. Among them, the cross-sectional area of the first sub-holes 232a is larger than the cross-sectional area of the second sub-holes 232b. The plurality of first sub-holes 232a are arranged at intervals along the length direction of the first bladder 221. Among them, the shapes of the plurality of first sub-holes 232a are the same, and the cross-sectional areas are the same. The plurality of second sub-holes 232b are arranged at intervals along the length direction of the first bladder 221. Among them, the shapes of the plurality of second sub-holes 232b are the same, and the cross-sectional areas are the same. In one embodiment, the shape of the first sub-holes 232a is rectangular, and the shape of the second sub-holes 232b is circular, as Figure 10a shown. The cross-sectional area of the first sub-holes 232a is larger than the cross-sectional area of the second sub-holes 232b. It can be understood that the ventilation area of the first sub-holes 232a is larger than the ventilation area of the second sub-holes 232b. When the airbag 220 is inflated, during the process of the gas entering the first cavity 226 from the second cavity 230, the ventilation speed of the gas passing through the first sub-holes 232a is higher than the ventilation speed of the gas passing through the second sub-holes 232b, so that the area of the first bladder 221 corresponding to the first sub-holes 232a expands faster, thereby making the detection sensitivity of the area of the airbag corresponding to the radial artery higher. In other embodiments, a pulse wave sensor may be provided inside the first bladder 221.

[0077] In this embodiment, the cross-sectional area of the first sub-holes 232a is larger than the cross-sectional area of the second sub-holes 232b, which can filter out the pulse signal of the ulnar artery while accurately detecting the pulse signal of the radial artery, and avoid the interference of the ulnar artery signal on the radial artery signal. In other embodiments, the shape of the first sub-holes 232a is irregular, and the shape of the second sub-holes 232b is circular, as Figure 10b shown. Among them, the cross-sectional area of the first sub-holes 232a is larger than the cross-sectional area of the second sub-holes 232b. In other embodiments, no ventilation holes are provided in the second part of the connection area 231. The pulse signal of the radial artery can be detected more accurately and quickly.

[0078] The wristband 200 further includes a locking part 280 for connecting and fixing the first wristband 200a and the second wristband 200b. In this embodiment, the locking part 280 includes a buckle 281, a buckle pin 282 and a buckle hole 283. Specifically, the buckle 281 and the buckle pin 282 are provided on the first wristband 200a, and the buckle hole 283 is provided on the second wristband 200b. Or the buckle 281 and the buckle pin 282 are provided on the second wristband 200b, and the buckle hole 283 is provided on the first wristband 200a.

[0079] In this embodiment, the buckle 281 and the buckle pin 282 are provided at one end of the first wristband 200a, and the buckle hole 283 is provided on the second wristband 200b. The buckle 281 is a rectangular ring structure, and the buckle 281 includes two opposite ends. One end of the buckle 281 is fixedly connected to the end of the first wristband 200a away from the second clamping part, and the buckle pin 282 is connected to the other end of the buckle 281. A plurality of buckle holes 283 are arranged at intervals along the length direction (the illustrated X-axis direction) of the second wristband 200b on the second wristband 200b. The buckle hole 283 penetrates the second wristband 200b along the thickness direction (Z-axis direction) of the second wristband 200b for passing through the buckle pin 282 of the first wristband 200a. When the user wears the wearable electronic device 1000, the first wristband 200a and the second wristband 200b surround the user's wrist, the buckle pin 282 passes through the buckle hole 283 of the second wristband 200b, and the user selects a suitable buckle hole 283 from the plurality of buckle holes 283 according to the wrist size and passes the buckle pin 282 through the buckle hole 283 to connect and fix the first wristband 200a and the second wristband 200b.

[0080] The above has introduced the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An airbag, characterized in that, it includes a first bladder and a second bladder, and the first bladder and the second bladder are stacked in the thickness direction of the airbag. The first bladder 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 and enclose a first cavity, the second bladder 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 and enclose a second cavity, and the first cavity and the second cavity are communicated. The first bladder and the second bladder are stacked, the second main body layer and the fourth main body layer are partially connected to form a connection area, and the area where the second main body layer and the fourth main body layer are not connected is a non-connection area. A reinforcing member is stacked on the non-connection area, and the reinforcing member is adjacent to the connection area. When the airbag is inflated, the first cavity and the second cavity are inflated, and the first bladder and the second bladder expand along the thickness direction of the airbag, and the reinforcing member drives the non-connection 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 member is provided with several hollow parts, and a plurality of the hollow parts are arranged at intervals along the length direction of the reinforcing member, and each of the hollow parts penetrates the reinforcing member along the thickness direction of the first bladder.

3. The airbag according to claim 2, characterized in that, each of the hollow parts is provided with an opening, and the opening penetrates one side in the width direction of the reinforcing member.

4. The airbag according to claim 3, characterized in that, the connection area is provided with several ventilation holes, and a plurality of the ventilation holes communicate the first cavity and the second cavity. The several ventilation holes are arranged at intervals along the length direction of the connection area. Along the width direction of the connection area, the several ventilation holes are in one-to-one correspondence with the several hollow parts, the opening faces the ventilation hole, and the middle area of the ventilation hole is opposite to the opening of the hollow part.

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 1-5, characterized in that, along the width direction of the first bladder, the width of the reinforcing member is less than or equal to the width of the non-connection area.

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

8. The airbag according to claim 1, characterized in that, the connection area is provided with several ventilation holes, and a plurality of the ventilation holes communicate 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; alternatively, some of the plurality of ventilation holes are located in the first part and the other 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 1-5, It is characterized in that both ends of the reinforcing member along the length direction of the first bladder have a chamfered profile or a semi-circular arc profile.

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

11. The airbag according to any one of claims 1-5, It is characterized in that the airbag includes a third bladder, the third bladder is stacked between the first bladder and the second bladder, the third bladder 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 partially 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 reinforcing member is provided on the non-connection area of the fifth main body layer, and / or the reinforcing member is provided on the non-connection area of the sixth main body layer.

12. The airbag according to claim 1, It is 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 bladder and communicates the outside with the second cavity, the wire is connected to the sensor and extends out of the air nozzle through the first cavity, the ventilation hole and the second cavity.

13. A wristband, It is characterized in that it includes a band body and an airbag according to any one of claims 1 to 12, the airbag is arranged on one side of the band body, and the second bladder is connected to the band body.

14. The wristband according to claim 13, It is characterized in that the band body and the airbag are of an integral structure.

15. A wearable electronic device, It is characterized in that it includes a main body and a wristband according to claim 13 or claim 14, the wristband is connected to opposite ends of the main body along the length direction, and the airbag is arranged on the inner side of the wristband.

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