Pressure detection module and wrist-wearable device

Abstract

The present application discloses a pressure detection module and a wrist-wearable device. The pressure detection module comprises a first circuit board, a pressure sensor, a first package layer, and a second package layer. The pressure sensor is fixed to a board surface of the first circuit board and is electrically connected to the first circuit board; the first package layer is fixed to the board surface of the first circuit board and covers the pressure sensor, the first package layer comprises a protrusion, the protrusion is located on the side of the pressure sensor facing away from the first circuit board, and at least part of the protrusion is arranged directly opposite to a detection surface of the pressure sensor; the second package layer is fixed on the side of the first package layer facing away from the first circuit board, and the hardness of the second package layer is less than that of the first package layer. In the present application, by arranging the protrusion, the detection sensitivity of the pressure sensor can be improved, enabling detection of small pressure changes, so that the pressure sensor can detect pressure pulse waves under small pressure, thereby improving the user experience.

Description

Pressure detection module and wrist wearable device

[0001] This application claims priority to the Chinese patent application with application number 202311435876.4 filed with the State Intellectual Property Office of China on October 31, 2023, and priority to the Chinese patent application with the invention name “Pressure detection module and wrist wearable device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to wearable devices, and in particular to a pressure detection module and a wrist wearable device. Background Art

[0003] The main health characteristic detection in current wrist wearable devices is developed and implemented based on the photoplethysmography (PPG) signal developed by optical sensors to collect blood vessels on the back of the wrist. Health characteristic detection includes heart rate, blood oxygen, heart health, high blood sugar trend risk prediction, etc. Due to the limited biological information carried by the PPG signal itself, in-depth mining based on PPG signals is becoming increasingly difficult. Therefore, some wrist wearable devices perform health characteristic detection by detecting pressure pulse waves.

[0004] The pressure pulse wave is a mechanical signal generated by the impact of blood on blood vessels during the heartbeat cycle. The pressure pulse wave only exists in arteries. By touching superficial arteries such as the radial artery, ulnar artery, temporal artery, and carotid artery with your fingers, you can feel the beating at the same frequency as the heart. This beating signal is the pressure pulse wave.

[0005] However, since the measurement of pressure pulse waves requires applying a certain amount of pressure to the user's wrist through the sensor, the user experience during measurement is not good.

[0006] Summary of the Invention

[0007] The purpose of this application is to provide a pressure detection module and wrist-worn wearable device. The pressure detection module, by providing a raised portion, can enhance the detection sensitivity of the pressure sensor, enabling it to detect smaller pressure changes, enabling the pressure sensor to detect pressure pulse waves even at lower pressures, thereby improving the user experience.

[0008] In a first aspect, the present application provides a pressure detection module that can be applied to a wrist wearable device, the pressure detection module comprising a first circuit board, a pressure sensor, a first packaging layer, and a second packaging layer;

[0009] The pressure sensor is fixed to the surface of the first circuit board and is electrically connected to the first circuit board;

[0010] The first packaging layer is fixed to the surface of the first circuit board and covers the pressure sensor. The first packaging layer includes a raised portion. The raised portion is located on a side of the pressure sensor facing away from the first circuit board and at least partially faces a detection surface of the pressure sensor.

[0011] The second packaging layer is fixed to a side of the first packaging layer facing away from the first circuit board, and the hardness of the second packaging layer is less than that of the first packaging layer.

[0012] In the present application, the first packaging layer has a greater hardness, which can better protect the pressure sensor, and the first packaging layer can improve the detection sensitivity of the pressure sensor by setting a raised portion, and can detect smaller pressure changes, so that the pressure sensor can detect pressure pulse waves under a smaller pressure; the second packaging layer is softer than the first packaging layer, and the second packaging layer contacts the user's skin. When the pressure detection component presses against the user's skin and performs pressure detection, the setting of the second packaging layer makes the pressure detection module less oppressive to the user, and the user's wearing and detection experience is better.

[0013] The detection surface is used to detect changes in pressure and can convert mechanical signals into electrical signals through deformation. The raised portion is raised relative to the detection surface. The raised portion is at least partially positioned directly opposite the detection surface of the pressure sensor, meaning that a projection of the raised portion along a vertical direction of the first circuit board overlaps the detection surface. Therefore, when the raised portion is subjected to pressure, the raised portion can transmit the pressure to the detection surface.

[0014] In which, the raised portion has a first projection on the board surface of the first circuit board, and the detection surface of the pressure sensor forms a second projection on the board surface of the first circuit board. The area of ​​the first projection is smaller than the area of ​​the second projection, and the first projection falls within the range of the second projection, so that the pressure transmission from the raised portion to the detection surface of the pressure sensor is more accurate.

[0015] The shape of the protrusion can be a spherical cap, a cylinder, a truncated cone, etc.

[0016] The second packaging layer can be made of silicone, which allows the pressure detection component and module to adhere better to the skin, improving the wearing experience of the wrist-worn wearable device. The first packaging layer can also be made of silicone. In this case, the second packaging layer can be more tightly bonded to the first packaging layer.

[0017] In some possible implementations, the hardness of the first encapsulation layer is greater than or equal to Shore A 10; and / or the hardness of the second encapsulation layer is less than or equal to Shore A 5.

[0018] In this implementation, by setting the hardness range of the first packaging layer and / or the second packaging layer, the pressure detection module can have better detection sensitivity and comfort in use.

[0019] In some possible implementations, the second encapsulation layer covers the protrusion, the second encapsulation layer includes an outer surface disposed away from the first encapsulation layer, the outer surface of the second encapsulation layer covers the protrusion, and a minimum distance from the protrusion is less than 0.5 mm.

[0020] In this implementation, the raised portion is covered by the second encapsulation layer, creating a concealed design. Since the outer surface of the second encapsulation layer is a completely flat surface, it conforms better to the user's skin, increasing the contact area and reducing the sense of pressure when the user wears the pressure detection module. Furthermore, the raised portion is protected by the first encapsulation layer and does not directly contact the user's skin, making it more comfortable for the user to wear.

[0021] In some possible implementations, the second packaging layer includes an outer surface disposed away from the first packaging layer, and the raised portion includes a contact surface disposed away from the pressure sensor, and the contact surface is flush with the outer surface of the second packaging layer.

[0022] In this implementation, since the contact surface is flush with the outer surface of the second packaging layer, the contact surface and the outer surface of the second packaging layer form a complete plane. Therefore, the pressure detection component can not only make the pressure sensor have higher detection sensitivity and detection accuracy, but also reduce the pressure on the user's skin through the contact with the user's skin through the complete plane, and the user feels less pressure when wearing it, which is conducive to improving wearing comfort.

[0023] In some possible implementations, the pressure sensor includes a detection body and an electrode, the detection surface is located on the detection body; the electrode is located on the side of the detection body facing away from the detection surface, and the electrode is fixed and electrically connected to the first circuit board; or, the electrode and the detection surface are located on the same side of the detection body, the electrode is located around the detection surface, the electrode is electrically connected to the first circuit board through bonding wires, and the first packaging layer covers the bonding wires.

[0024] In this implementation, the bonding wires are protected by covering the bonding wires with the first packaging layer. Furthermore, the first packaging layer has a relatively high hardness, which helps ensure reliable electrical connection of the bonding wires.

[0025] The raised portion of the first packaging layer can be staggered with the bonding wire. In this case, the raised portion avoids the bonding wire, and when the raised portion is compressed, it does not compress the bonding wire, which helps to ensure the structural stability of the bonding wire and thus ensure the reliability of the electrical connection between the pressure sensor and the first circuit board.

[0026] In some possible implementations, the pressure sensor has a detection cavity, which is located in the detection body and has an opening facing away from the detection surface; the first circuit board has a vent hole connected to the detection cavity.

[0027] In this implementation, a vent is provided at the opening of the detection cavity on the first circuit board, communicating with the detection cavity and the atmosphere. This allows the pressure sensor to employ differential pressure detection, making its detection surface less susceptible to atmospheric pressure fluctuations during detection and resulting in more accurate pressure sensor detection results.

[0028] In some possible implementations, there are multiple pressure sensors.

[0029] In this implementation, multiple pressure sensors can jointly form a larger detection area, so that the pressure detection component has a larger detection area and thus has better detection adaptability.

[0030] The plurality of pressure sensors are arranged in a row and spaced apart from each other. In this case, the plurality of pressure sensors can be used to detect a larger range of the wrist circumference with a smaller number of pressure sensors.

[0031] The multiple pressure sensors are arranged in an array. The multiple pressure sensors can be arranged in multiple rows and columns, with the row and column directions being perpendicular, and the row and column spacings being equal, so that the multiple pressure sensors are distributed in a rectangular surface. In this case, since the multiple pressure sensors are arranged in an array, the arrangement of the pressure sensors is more regular, facilitating detection by the pressure detection assembly. Furthermore, by providing a relatively small number of pressure sensors, a larger area can be covered, so that the pressure detection assembly can detect pressure over a larger area and perform detection over a larger range of the wrist circumference.

[0032] Among them, multiple pressure sensors are arranged into multiple rows, and the pressure sensors in two adjacent rows are staggered. The row direction of the multiple pressure sensors arranged in a row can be parallel to the length direction of the pressure detection module, so as to be arranged in the length extension direction of the wristband. At this time, since the pressure sensors in two adjacent rows are staggered, it is possible to achieve coverage of a larger area by setting a relatively small number of pressure sensors, and a denser arrangement of detection points in the row direction of the multiple pressure sensors, so that the pressure detection component can achieve pressure detection in a larger area; in addition, since the row direction of the multiple pressure sensors is parallel to the length extension direction of the wristband, so that when the wrist wearable device is worn, it surrounds the circumference of the user's wrist, and can perform a larger range of detection on the circumference of the user's wrist.

[0033] In some possible implementations, the pressure detection module further has ventilation holes, the ventilation holes are staggered with the pressure sensors, and the ventilation holes pass through the first circuit board, the first packaging layer, and the second packaging layer.

[0034] In this implementation, the air holes are breathable, and the pressure detection component improves its breathability by providing the air holes, thereby reducing the risk of adhesion between the second packaging layer and the skin, thereby improving comfort of use.

[0035] In some possible implementations, the pressure detection module also includes a pressurizing component, which is located on the side of the first circuit board facing away from the pressure sensor; the pressurizing component includes a fixed part and a movable part; the movable part is installed on the fixed part, and the pressurizing component moves along a first direction relative to the fixed part through the movable part, pushing the first circuit board and the pressure sensor to move along the first direction, wherein the first direction is perpendicular to the board surface of the first circuit board.

[0036] In this implementation, the pressure-applying component is used to press the pressure sensor against the wrist with appropriate pressure to improve detection accuracy. In some examples, the pressure-applying component can be used to push the pressure detection component to move, allowing the pressure sensor to press against the wrist with varying pressures. The pressure sensor can detect pressure pulse waves at varying pressures, thereby acquiring more dimensional information and making detection more comprehensive and accurate.

[0037] The first direction may be perpendicular to the surface of the first circuit board. Since the pressure sensor needs to press the wrist skin to perform pressure detection, when the first direction is perpendicular to the detection area of ​​the user's wrist skin contacted by the pressure sensor, the pressure sensor presses the detection area in a direction perpendicular to the detection area, thereby achieving higher detection accuracy.

[0038] In some possible implementations, the fixed component has a first sleeve-fitting portion, and the movable component has a second sleeve-fitting portion. The first sleeve-fitting portion and the second sleeve-fitting portion are sleeved together along a first direction and movably connected.

[0039] In this implementation, the fixed part and the movable part that fit together are easy to install, and it is easy to guide the relative movement direction of the fixed part and the movable part, so that when the movable part pushes the pressure sensor against the user's wrist, the pressure direction is not easily deviated, thereby effectively ensuring the detection accuracy of the pressure sensor.

[0040] In some possible implementations, the first fitting part is sleeved inside the second fitting part, one of the first fitting part and the second fitting part is provided with a guide groove, and the other is provided with a guide block, the guide block is slidably connected to the guide groove, and the sliding direction is parallel to the first direction.

[0041] In this implementation, a matching structure of a guide groove and a guide block is provided between the first fitting part and the second fitting part, and the relative sliding direction of the two is made parallel to the first direction, so that the second fitting part moves along the first direction relative to the first fitting part, and the second fitting part can be circumferentially limited in the circumferential direction, so that the relative movement direction between the second fitting part and the first fitting part is more accurate, the driving direction of the pressure detection component by the pressurizing component is more accurate, and the detection of the pressure detection component is more precise.

[0042] The guide grooves and guide blocks can be designed in groups to form a guide structure. The number of guide structures can range from two to six groups. In this case, the number of guide structures can provide more accurate guidance for the movable parts and simplify the structure of the pressurizing assembly.

[0043] In some possible implementations, the pressurizing assembly further includes a rolling element, which is located between the first fitting portion and the second fitting portion and contacts the first fitting portion and the second fitting portion.

[0044] In this implementation, the rolling element is used to reduce the friction of the relative movement of the first fitting part and the second fitting part, so as to improve the smoothness of the relative movement between the first fitting part and the second fitting part, reduce the risk of jamming, and make the pressurizing action of the pressurizing component more reliable.

[0045] In some possible implementations, the pressurizing assembly further includes an elastic member, which elastically connects the first sleeve-fitting portion and the second sleeve-fitting portion.

[0046] In this implementation, the elastic member has a reset function, and is used to keep the movable member at the initial position or restore it to the initial position when the pressurizing assembly is not pressurized.

[0047] The elastic member can be located in the guide groove between the first sleeve-fitting portion and the second sleeve-fitting portion. In this case, the space utilization rate of the pressurizing assembly is higher.

[0048] In some possible implementations, the fixing member further includes a fixing portion, which is connected to one end of the first sleeve portion; the movable member further includes a pushing portion, which is connected to one end of the second sleeve portion; the pushing portion and the fixed portion are arranged opposite to each other; the pressurizing component forms a driving air cavity between the fixed portion and the pushing portion, and the driving air cavity is inflated to enable the pushing portion to move relative to the fixed portion.

[0049] In this implementation, the pressurizing component drives the movable parts by setting up a driving air cavity, and inflating the driving air cavity from the air source. Compared with the solution of using mechanical structure drive (such as rack slider transmission, etc.), the driving structure design of this embodiment is more flexible and smaller in size, which is conducive to the miniaturization design of the pressurizing component and the pressure detection module.

[0050] In some possible implementations, the pressurizing assembly further includes an airbag, the airbag is located between the fixing portion and the pushing portion, and the driving air cavity is located inside the airbag.

[0051] In this implementation, the airbag is easier to install, and the sealing environment of the driving air cavity formed by the airbag is more reliable, which is beneficial to improving the driving reliability of the pressurizing component.

[0052] The airbag can be a laminated airbag, i.e., it can be formed from multiple interconnected and stacked sub-airbags. The airbag is capable of expanding and contracting in at least a first direction. When inflated, the airbag extends in the first direction and pushes the pusher, causing the movable member to move. When de-inflated, the airbag retracts, returning the movable member to its original position. In this case, the laminated airbag is easy to assemble, and the coordination of the multiple sub-airbags during inflation allows for more accurate and reliable expansion.

[0053] In some possible implementations, the pressurizing component also includes an elastic membrane, which is sealed and connected to the other end of the first sleeve portion; the driving air cavity is surrounded by the fixed portion, the first sleeve portion and the elastic membrane. When the driving air cavity is inflated, the elastic membrane protrudes in a direction away from the fixed portion, and the elastic membrane resists and pushes the pushing portion.

[0054] In this implementation, the elastic membrane has a simple structure and is easy to install; and the elastic membrane is close to the pushing portion, which facilitates direct pushing of the pushing portion to move under gas drive.

[0055] The elastic film may be made of silicone, have a hardness less than or equal to Shore A5, and an elastic modulus less than or equal to 50 kPa. In this case, the elastic film has good deformability.

[0056] In some possible implementations, the pressurizing component also includes a folding membrane, which is sealed and connected to the other end of the first sleeve part; the driving air cavity is surrounded by the fixed part, the first sleeve part and the folding membrane. When the driving air cavity is inflated, the folded part of the folding membrane opens, and the folding membrane resists and pushes the pushing part.

[0057] In this implementation, the folding film is easy to install with the first fitting portion, and the folding film can produce folding deformation, but the folding film material does not undergo tensile deformation, has a long service life, and is more reliable.

[0058] The folding membrane may include a folding portion and a connecting portion, wherein the folding portion and the connecting portion may be integrally formed structural members. The folding portion is folded and sealed to the first open end, and the folding portion can be unfolded along the first direction. The connecting portion is provided corresponding to the pushing portion and may be close to the pushing portion. The connecting portion may be circular and may not have deformability. In this case, the folding membrane has good deformability and high reliability.

[0059] In some possible implementations, the pressurizing assembly further includes a seal, which seals and connects the first sleeve portion and the second sleeve portion; and the driving air cavity is surrounded by the first sleeve portion, the second sleeve portion, and the seal.

[0060] In this implementation, the sealing member directly forms the driving air cavity by sealingly connecting the first sleeve portion and the second sleeve portion, and the structure is relatively simple and reliable.

[0061] Among them, the seal can be a sealing ring, and a sealing groove can be opened on the outside of the first open end of the first sleeve part. The seal is embedded in the sealing groove, and the seal abuts against the inner wall of the second sleeve part, so that the first sleeve part and the second sleeve part are sealed and connected, and the two can slide relative to each other.

[0062] In some possible implementations, the pressurizing assembly further includes a sliding guide rail, which is fixed to a side of the fixed part facing away from the movable part, and the sliding guide rail is used to thread a wristband of the wrist-worn device.

[0063] In this implementation, a sliding guide rail is set to slide relative to the wristband to adjust the position of the sliding guide rail relative to the wristband, thereby adjusting the relative position of the pressure-applying component and the wristband, and adjusting the position of the pressure detection component so that the pressure sensor can basically face the artery of the wrist, thereby improving the detection accuracy of the wrist-worn device.

[0064] In some possible implementations, the pressure detection module further includes a clamping member, which is fixedly connected to the fixing member, and the clamping member is used to be detachably connected to the wristband of the wrist wearable device.

[0065] In this implementation, a clamp is provided so that the pressure component can be detachably connected to the wristband, thereby facilitating adjustment of the position of the pressure component.

[0066] In some possible implementations, the pressure detection module also includes a conditioning circuit assembly, which is installed on the side of the pressure assembly facing away from the first circuit board; the conditioning circuit assembly includes a second circuit board and a chip, the chip is fixed and electrically connected to the second circuit board, and the second circuit board is electrically connected to the first circuit board.

[0067] In this implementation, the conditioning circuit component can be used to perform preliminary processing on the signal of the pressure detection component, and then send the processed data to the device body to reduce the computing pressure of the device body.

[0068] In some possible implementations, the fixing member is provided with an air inlet nozzle, which is connected to the driving air cavity; the pressure detection module also includes a conditioning circuit assembly, which is installed on the side of the pressurizing assembly facing away from the first circuit board; the conditioning circuit assembly includes a second circuit board and a chip, the chip is fixed and electrically connected to the second circuit board, and the second circuit board is electrically connected to the first circuit board; the conditioning circuit assembly also includes an air inlet pipe, which is connected to the air inlet nozzle.

[0069] In this implementation, an air inlet nozzle is provided on the fixing part and an air inlet pipe is provided on the conditioning circuit assembly, so that the driving air cavity is connected to the outside world through the air inlet nozzle and the air inlet pipe of the conditioning circuit assembly, thereby fully utilizing the space of the pressurizing assembly and having a simple structure.

[0070] In some possible implementations, the conditioning circuit assembly further includes a fixed housing and a display screen, the bottom of the fixed housing is fixed to the pressurizing assembly, the second circuit board is installed inside the fixed housing, and the display screen is installed on the top of the fixed housing.

[0071] In this implementation, the display screen is convenient for independently displaying the detection content, which is convenient for users to use.

[0072] Among them, the display screen can display electrocardiogram curves, or indicators such as heart rate and blood pressure, with richer display content.

[0073] Among them, the second circuit board can avoid the setting of the air intake pipe to achieve a compact structural arrangement, thereby fully utilizing the thickness space of the conditioning circuit component, reducing the thickness of the conditioning circuit component, and facilitating the miniaturization design of the conditioning circuit component.

[0074] In some possible implementations, the conditioning circuit assembly also includes a conditioning wire and a wire protective shell; the conditioning wire electrically connects the second circuit board and the first circuit board, and the conditioning wire is a stretchable wire; the wire protective shell includes a first sub-shell and a second sub-shell, the first sub-shell is fixed to the fixed part, and the second sub-shell is fixed to the movable part, the first sub-shell and the second sub-shell are movably connected to form a telescopic cavity, and the conditioning wire is at least partially located in the telescopic cavity.

[0075] In this implementation, the first and second subshells are movably connected to form a telescopic cavity, with the conditioning wire at least partially located within the telescopic cavity. When the fixed member and the movable member move relative to each other, the first and second subshells move synchronously relative to each other, causing the telescopic cavity to expand to accommodate the expansion of the conditioning wire itself and protect it.

[0076] In a second aspect, the present application provides a wrist-worn wearable device, which includes: a device body, a wristband, and a pressure detection module provided by the above-mentioned implementation method; the wristband is connected to the device body; the pressure detection module is installed on the wristband, and the pressure sensor of the pressure detection module is located on the inner side of the wristband.

[0077] In this implementation, the user's pulse wave is detected by a pressure sensor, which can obtain more accurate health indicators such as the user's blood pressure and heart rate.

[0078] In some possible implementations, the pressure detection module is movably connected to the wristband.

[0079] In this implementation, the pressure detection module can be moved on the wristband and then adjusted in position, so that when the user wears the wrist wearable device, the pressure sensor can be adjusted to the skin corresponding to the radial artery, which makes the detection more accurate and can adapt to users with different wrist circumferences.

[0080] In some possible implementations, the wrist-worn device further includes a connection circuit module, which is installed on the outside of the wristband, and has two ends respectively connected to the device body and the pressure detection module, and the connection circuit module is stretchable.

[0081] In this implementation, the connection line between the pressure detection module and the device body is integrated into a connection line module, which improves the integration and wearability of the wrist wearable device; the connection line module is stretchable and can cooperate with the position adjustment needs of the pressure detection module, making it easier for users to use.

[0082] In some possible implementations, the connecting circuit module includes a base and connecting wires. The base is made of flexible material or elastic material. The connecting wires are arranged in the base. The connecting wires electrically connect the main body and the pressure detection module. The connecting wires are arranged in a wavy or spiral shape in the base.

[0083] In this implementation, the substrate encapsulates the connecting wires to protect them; the substrate is flexible, and the connecting wires are wavy or spiral, so that the connecting circuit module as a whole can be stretched and deformed; when the pressure detection component of the pressure detection module moves, it can drive the connecting circuit module to stretch and contract, so as to ensure a stable electrical connection between the pressure detection module and the device body.

[0084] In some possible implementations, the connection line module further includes an air duct, which is arranged on the base in a wavy or spiral shape, and connects the device body and the pressure detection module.

[0085] In this implementation, the air duct is used to transport gas from the air source within the device body to the pressure detection module. The air duct is flexible and capable of a certain degree of deformation. When subjected to force, the air duct stretches and retracts upon release. Movement of the pressure detection module's pressure detection assembly drives the connecting circuit module to expand and contract, ensuring a stable air connection between the pressure detection module and the device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] FIG1 is a schematic diagram of a wrist wearable device in use according to an embodiment of the present application;

[0087] FIG2 is a schematic structural diagram of the pressure detection module shown in FIG1 in some embodiments;

[0088] FIG3 is a diagram of the internal structure of the pressure detection assembly shown in FIG2 in some embodiments;

[0089] FIG4 is a diagram showing the internal structure of the pressure detection assembly shown in FIG2 in some other embodiments;

[0090] FIG5 is a diagram showing the internal structure of the pressure detection assembly shown in FIG2 in some other embodiments;

[0091] FIG6 is a diagram showing the internal structure of the pressure detection assembly shown in FIG2 in some other embodiments;

[0092] FIG7 is a schematic diagram of a partial structure of the pressure detection assembly shown in FIG2 in some embodiments;

[0093] FIG8 is a schematic diagram of a partial structure of the pressure detection assembly shown in FIG2 in other embodiments;

[0094] FIG9 is a schematic structural diagram of the pressurizing assembly shown in FIG2 in some embodiments;

[0095] FIG10 is a partial structural diagram of the pressurizing assembly shown in FIG9 in some embodiments;

[0096] FIG11 is a top view of the pressurizing assembly shown in FIG9 ;

[0097] FIG12 is a schematic diagram of the internal structure of the pressurizing assembly shown in FIG9 in some embodiments;

[0098] FIG13 is an internal structural diagram of another embodiment of the pressurizing assembly shown in FIG9;

[0099] FIG14 is an internal structural diagram of yet another embodiment of the pressurizing assembly shown in FIG9;

[0100] FIG15 is an internal structural diagram of another embodiment of the pressurizing assembly shown in FIG9 ;

[0101] FIG16 is a diagram illustrating the internal structure of the conditioning circuit assembly shown in FIG2 in some embodiments;

[0102] FIG17 is a bottom view of the conditioning circuit assembly shown in FIG16;

[0103] FIG18 is a diagram showing the internal structure of the conditioning circuit assembly shown in FIG16 from another perspective;

[0104] FIG19 is a diagram showing the internal structure of the pressure detection module shown in FIG2;

[0105] FIG20 is a schematic diagram of the structure of the conditioning circuit assembly shown in FIG19 in some embodiments;

[0106] FIG21 is a schematic structural diagram of a portion of the wristband shown in FIG1 in some embodiments;

[0107] FIG22 is a top view of a portion of the structure of the wrist wearable device shown in FIG1 in some embodiments;

[0108] FIG23 is a bottom view of a portion of the structure of the wrist wearable device shown in FIG1 in some embodiments;

[0109] FIG24 is a front view of a portion of the structure of the wrist wearable device shown in FIG1 ;

[0110] FIG25 is a side view of a portion of the structure of the wrist wearable device shown in FIG24 ;

[0111] FIG26 is a schematic structural diagram of the connection line module shown in FIG1;

[0112] FIG27 is a schematic structural diagram of the connecting wire shown in FIG26 . DETAILED DESCRIPTION

[0113] 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.

[0114] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0115] Throughout this specification, reference to an embodiment, a specific embodiment, an example, or the like, means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0116] Please refer to FIG1 , which is a schematic diagram of a wrist wearable device 100 in use according to an embodiment of the present application.

[0117] The wrist wearable device 100 provided in the embodiment of the present application can be a bracelet, a watch, or other electronic device for wrist wear, which can be used for daily monitoring of cardiovascular health status. Among them, the specific implementation scheme of the present application can be applied in many scenarios, such as for daily detection of health indicators such as heart rate and blood pressure, prediction of hypertension risk, daily screening of high-risk groups, cardiovascular risk assessment, etc. The wrist wearable device 100 in the embodiment shown in Figure 1 is exemplified by taking a watch as an example.

[0118] Referring to the cross-sectional view of the wrist in FIG1 , the wrist has two bones, the radius and the ulna; the wrist also has multiple flexor tendons, which are responsible for the movement of the fingers; and the wrist also has two arteries, the radial artery and the ulnar artery. The radial artery is close to the radius, and the ulnar artery is close to the ulna. Furthermore, the radial artery is closer to the thumb on the wrist, while the ulnar artery is closer to the little finger on the wrist. The wrist-type wearable device 100 can be worn on the wrist and secured around the wrist.

[0119] In some embodiments, the wrist wearable device 100 may include a device body 10 , a wristband 20 , and a pressure detection module 30 .

[0120] Among them, the device body 10 is usually worn on the dorsal side of the wrist, that is, the side away from the radial artery and the ulnar artery. The device body 10 can be a smart device, which can have the function of using software, such as time display, voice call and other functions, and can also have functions such as motion detection and health detection. Exemplarily, the device body 10 may include a battery, a control motherboard, a control chip and an electronic screen, etc. The embodiment of the present application does not strictly limit the number and type of components included in the device body 10. It can be understood that when the wrist-worn device 100 is a watch, the device body 10 can be a watch body. The device body 10 can have two ends, and the two ends are used to connect to the wristband 20.

[0121] Among them, the wristband 20 is connected to both ends of the device body 10 at the same time, and can form a ring with the device body 10 to wear the wrist-worn device 100 on the user's wrist. The wristband 20 can be flexible to fit the shape of the wrist. The wristband 20 can be fixedly connected to the device body 10, or it can be detachably connected to the device body 10 to facilitate the replacement of different wristbands 20. In some instances, the wristband 20 can be a single belt-like structure, one end of the wristband 20 is connected to one end of the device body 10, and the other end of the wristband 20 can be passed through the other end of the device body 10, and then folded back and connected to other positions of the wristband 20 to adapt to different wrist circumferences.

[0122] Among them, the pressure detection module 30 is installed on the wristband 20. The pressure detection module 30 is used to detect the pressure pulse wave of the wrist artery and to collect corresponding parameters such as heart rate and blood pressure to detect the corresponding health status. The pressure detection module 30 can be electrically connected to the device body 10. The pressure detection module 30 can directly analyze the detected signal, or directly send the detected signal to the device body 10 for analysis by the device body 10. This is not strictly limited here. In some cases, the pressure detection module 30 can have an active pressurization function. For example, an air source can be set and an airbag can be set in the pressure detection module 30. The air source inflates the airbag to press the sensor against the artery of the wrist skin to obtain more accurate and more multi-dimensional data. In some cases, the pressure detection module 30 may not have an active pressurization function. The tension of the wristband 20 when worn can be used to make the pressure detection module 30 fit the user's skin for detection.

[0123] In some embodiments, the connection circuit between the pressure detection module 30 and the device body 10 is integrated into a connection circuit module 40, thereby improving the integration and wearability of the wrist wearable device 100. The connection circuit module 40 can be located outside the wristband 20 and can be fixedly connected to the device body 10 and the pressure detection module 30.

[0124] In some embodiments, the pressure detection module 30 can be movably connected to the wristband 20. The pressure detection module 30 can be moved on the wristband 20 to adjust its position. This allows the user to adjust the pressure sensor 12 to the skin corresponding to the radial artery when wearing the wrist wearable device 100, thereby achieving more accurate detection and adapting to users with different wrist circumferences. In this case, the connection circuit module 40 is stretchable to accommodate the need for adjusting the position of the pressure detection module.

[0125] In other embodiments, the pressure detection module 30 can be fixed to the wristband 20 and positioned to correspond to the radial artery for easier detection. In this case, the wristband 20 can be configured in different sizes, allowing users to choose wristbands 20 of different sizes to accommodate different wrist circumferences.

[0126] Please refer to FIG. 1 and FIG. 2 in combination. FIG. 2 is a schematic structural diagram of the pressure detection module 30 shown in FIG. 1 in some embodiments.

[0127] In some embodiments, the pressure detection module 30 may include a pressure detection component 1, a pressurizing component 2, and a conditioning circuit component 3. The conditioning circuit component 3, the pressurizing component 2, and the pressure detection component 1 may be stacked, with the pressurizing component 2 located between the pressure detection component 1 and the conditioning circuit component 3. For example, the pressure detection module 30 may be connected to the wristband 20 via the pressurizing component 2, the pressure detection component 1 may be located on the inner side of the wristband 20, and the conditioning circuit component 3 may be located on the outer side of the wristband 20. In an embodiment of the present application, the pressure detection module 30 is connected to the wristband 20 via the pressurizing component 2, so that the pressure detection module 30 is partially located on the inner side of the wristband 20 and partially located on the outer side of the wristband 20, so that the protrusion height of the pressure detection component 1 relative to the wristband 20 is smaller, and the user's wearing comfort is higher.

[0128] For example, the pressure detection module 30 has a thickness, a length, and a width. The thickness direction of the pressure detection module 30 is the Z direction, which can be oriented toward the inside of the wristband 20. The length direction of the pressure detection module 30 is the X direction, which can be parallel to the length extension direction of the wristband 20. The width direction of the pressure detection module 30 is the Y direction, which can be parallel to the width direction of the wristband 20. It is easy to understand that the X direction, the Y direction, and the Z direction are perpendicular to each other.

[0129] The pressure detection assembly 1 is configured to contact the skin of a user's wrist. By pressing against the skin of the user's wrist, the pressure detection assembly 1 detects the pressure pulse wave of the wrist artery. It will be readily understood that the pressure detection assembly 1 may include a pressure sensor 12. The pressure sensor 12 may directly contact the skin, or it may be encapsulated and not in direct contact with the skin, which is not specifically defined herein.

[0130] Wherein, the pressurizing component 2 is used to enable the pressure sensor 12 to press against the wrist with appropriate pressure to improve the accuracy of detection. In some examples, the pressure sensor 12 can be pressed against the wrist with different pressures by pushing the pressure detection component 1 to move through the pressurizing component 2. The pressure sensor 12 can detect at different pressures and obtain pressure pulse waves at different pressures, thereby obtaining information of more dimensions and making the detection more comprehensive and accurate. For example, the pressurizing component 2 can press the pressure sensor 12 against the skin by driving the pressure detection component 1 to move toward the wrist, or can directly press the pressure sensor 12 against the skin by driving the pressure sensor 12 to move toward the wrist, which is no longer strictly limited here. Wherein, the pressurizing component 2 can be driven by inflating the airbag, or can be driven by a micropump hydraulic method, or can be driven by a motor transmission method, which are no longer given examples one by one here.

[0131] The conditioning circuit assembly 3 is electrically connected to the pressure detection assembly 1, for example, via a retractable wire. The conditioning circuit assembly 3 is also electrically connected to the connection circuit module 40. The conditioning circuit assembly 3 can be used to perform preliminary processing on the signal from the pressure detection assembly 1 and then transmit the processed data to the device body 10 to reduce the computing pressure on the device body 10. In some examples, the conditioning circuit assembly 3 can display the analysis results corresponding to the processed data through images or audio. In this case, the conditioning circuit assembly 3 has signal processing functions, signal transmission functions, and result display functions.

[0132] In other embodiments, the conditioning circuit component 3 can send the signal of the pressure detection component 1 to the device body 10, and the device body 10 performs signal processing, signal analysis and result display.

[0133] Among them, the connection relationship between the conditioning circuit component 3 and the pressurizing component 2 can be a fixed connection or a detachable connection, and the embodiment of the present application does not strictly limit this.

[0134] Please refer to FIG. 2 and FIG. 3 in combination. FIG. 3 is a diagram showing the internal structure of the pressure detection assembly 1 shown in FIG. 2 in some embodiments.

[0135] In some embodiments, the pressure detection assembly 1 may include a first circuit board 11 , a pressure sensor 12 , a first packaging layer 13 , and a second packaging layer 14 .

[0136] The pressure sensor 12 is located on one side of the first circuit board 11. For example, the pressure sensor 12 can be installed on the side of the first circuit board 11 facing away from the pressure component 2 (see Figure 2). The pressure sensor 12 can be fixed to the surface of the first circuit board 11 and electrically connected to the first circuit board 11. The number of pressure sensors 12 can be one or more, and the embodiment of the present application is illustrated and described with multiple ones. The first packaging layer 13 is fixed to the surface of the first circuit board 11 and covers the pressure sensor 12. The first packaging layer 13 and the first circuit board 11 can completely cover the pressure sensor 12 to protect the pressure sensor 12. The second packaging layer 14 is fixed to the side of the first packaging layer 13 facing away from the first circuit board 11. The second packaging layer 14 covers the first packaging layer 13, and the second packaging layer 14 can be used to contact the skin of the wrist.

[0137] The pressure sensor 12 has a detection surface 121, which is used to detect changes in pressure and can convert mechanical signals into electrical signals through deformation. The pressure sensor 12 may include a detection body 122, and the detection surface 121 is located in the detection body 122. The pressure sensor 12 may also have a detection cavity 123, and the detection cavity 123 is located in the detection body 122. The detection cavity 123 has an opening, and the opening of the detection cavity 123 is set back to the detection surface 121. At this time, the opening of the detection cavity 123 faces the first circuit board 11. The first circuit board 11 is provided with a vent 111 at the opening corresponding to the detection cavity 123. The vent 111 is connected to the detection cavity 123, so that the detection cavity 123 is connected to the atmosphere. At this time, the pressure sensor 12 can adopt a differential pressure detection mode, and its detection surface 121 is not easily affected by changes in atmospheric pressure during detection, so that the detection results of the pressure sensor 12 are more accurate.

[0138] Among them, the pressure sensor 12 may also include an electrode 124, and the electrode 124 is located on the side of the detection body 122 facing away from the detection surface 121, and the electrode 124 is fixedly connected and electrically connected to the detection body 122. The electrode 124 is fixed and electrically connected to the first circuit board 11. For example, the electrode 124 can be welded (for example, mounted) on the first circuit board 11 to fix and electrically connect the detection body 122 to the first circuit board 11. In this embodiment, the pressure sensor 12 is fixed and electrically connected to the first circuit board 11 by the electrode 124 facing away from the detection surface 121, so that the electrical connection structure between the pressure sensor 12 and the first circuit board 11 is reliable. In the process of the pressure sensor 12 being subjected to force to perform pressure detection, the electrical connection structure is stable and not easily damaged, which is conducive to improving the reliability of the pressure detection component 1.

[0139] Exemplarily, the first packaging layer 13 may include a raised portion 131, which is located on the side of the pressure sensor 12 facing away from the first circuit board 11, and is at least partially arranged opposite to the detection surface 121 of the pressure sensor 12. The raised portion 131 is raised relative to the detection surface 121. The raised portion 131 is at least partially arranged opposite to the detection surface 121 of the pressure sensor 12, which means that the projection of the raised portion 131 along the vertical direction of the first circuit board 11 overlaps with the detection surface 121. Therefore, when the raised portion 131 is subjected to pressure, the raised portion 131 can transfer the pressure to the detection surface 121. The number of raised portions 131 can be the same as the number of pressure sensors 12, and the two are arranged in a one-to-one correspondence.

[0140] In some examples, the raised portion 131 has a first projection on the surface of the first circuit board 11, and the detection surface 121 of the pressure sensor 12 forms a second projection on the surface of the first circuit board 11. The area of ​​the first projection is smaller than the area of ​​the second projection, and the first projection falls within the range of the second projection, so that the pressure transmission from the raised portion 131 to the detection surface 121 of the pressure sensor 12 is more accurate. The shape of the raised portion 131 can be spherical cap, cylindrical, truncated cone, etc.

[0141] For example, the hardness of the second packaging layer 14 can be less than that of the first packaging layer 13. In this embodiment, the first packaging layer 13 has a greater hardness, which can better protect the pressure sensor 12. The first packaging layer 13 can improve the detection sensitivity of the pressure sensor 12 by providing the protrusion 131, and can detect smaller pressure changes, so that the pressure sensor 12 can detect pressure pulse waves under relatively low pressure. The second packaging layer 14 is softer than the first packaging layer 13. The second packaging layer 14 contacts the user's skin. When the pressure detection component 1 is pressed against the user's skin for pressure detection, the provision of the second packaging layer 14 makes the pressure detection module 30 (see Figure 1) less oppressive to the user, and the user's wearing and detection experience is better.

[0142] Among them, the hardness of the first packaging layer 13 can be greater than or equal to Shore A10. Among them, Shore A10 is a parameter measured using a Shore A durometer. In some examples, the elastic modulus of the second packaging layer 14 can be greater than or equal to 0.2MPa (megapascals). Among them, the hardness of the second packaging layer 14 can be less than or equal to Shore A5. In some examples, the elastic modulus of the second packaging layer 14 can be less than or equal to 50kPa (kilopascals). In this embodiment, by setting the hardness range of the first packaging layer 13 and / or the second packaging layer 14, the pressure detection module 30 can have better detection sensitivity and comfort of use.

[0143] Exemplarily, the material of the second encapsulation layer 14 can be silicone, so that the pressure detection component 1 and the pressure detection module 30 have better skin-fitting properties, which is conducive to improving the wearing experience of the wrist wearable device 100. Among them, the first encapsulation layer 13 can also be made of silicone material. In this case, the connection and bonding between the second encapsulation layer 14 and the first encapsulation layer 13 are better. It is understandable that in some other embodiments, the first encapsulation layer 13 and / or the second encapsulation layer 14 can also be made of other materials that meet the relevant hardness requirements, such as rubber, etc., and the embodiments of the present application are not strictly limited to this.

[0144] In some embodiments, the first packaging layer 13 covers the pressure sensor 12 and forms a complete package. The first packaging layer 13 may include a wrapping portion 132 and the above-mentioned raised portion 131. The wrapping portion 132 may be fixed to the board surface of the first circuit board 11 and cover the pressure sensor 12. The surface of the wrapping portion 132 facing away from the first circuit board 11 may be a plane, and the thickness of the wrapping portion 132 may be slightly greater than the height of the pressure sensor 12. In this case, the wrapping portion 132 can fully protect the pressure sensor 12 and is conducive to the thin design of the pressure detection assembly 1. For example, the difference between the thickness of the wrapping portion 132 and the height of the pressure sensor 12 may be in the range of 0.1 mm to 0.5 mm.

[0145] The protrusion height of the protrusion 131 relative to the wrapping portion 132 can be in the range of 0.1 mm to 0.5 mm. The wrapping portion 132 and the protrusion 131 can be an integrally formed structure. In this case, the manufacturing of the first encapsulation layer 13 is more convenient, and the connection structure between the protrusion 131 and the wrapping portion 132 is more stable and reliable.

[0146] In some embodiments, the second encapsulation layer 14 can cover the first encapsulation layer 13, including a covering wrapping portion 132 and a raised portion 131. At this time, the outer surface of the second encapsulation layer 14 facing away from the first encapsulation layer 13 can be a complete plane, and the outer surface 141 of the second encapsulation layer is used to contact the skin of the wrist. In this embodiment, the outer surface 141 of the second encapsulation layer covers the raised portion 131, and the raised portion 131 is covered by the second encapsulation layer 14, which is a hidden design. At this time, since the outer surface 141 of the second encapsulation layer is a complete plane, the outer surface 141 of the second encapsulation layer fits better with the user's skin and has a larger contact area, so that the user feels less oppressive when wearing the pressure detection module 30. In addition, the raised portion 131 can also be protected by the first encapsulation layer 13, and the raised portion 131 does not directly contact the user's skin, making it more comfortable for the user to wear.

[0147] The minimum distance between the outer surface 141 of the second packaging layer and the raised portion 131 is less than or equal to 0.5 mm. In this embodiment, the distance between the raised portion 131 and the outer surface 141 of the second packaging layer is relatively small, meaning that the thickness of the portion of the second packaging layer 14 covering the raised portion 131 is relatively small. This helps ensure the sensitivity of the raised portion 131 in detecting pressure and reduces pressure on the user's skin. The minimum distance between the outer surface 141 of the second packaging layer and the raised portion 131 is generally located between the top of the raised portion 131, facing away from the circuit board, and the outer surface 141 of the second packaging layer.

[0148] In some embodiments, the pressure detection component 1 may be provided with a ventilation hole 15, and the ventilation hole 15 is staggered from the pressure sensor 12, and the ventilation hole 15 may pass through the first circuit board 11, the first packaging layer 13 and the second packaging layer 14. In this embodiment, the ventilation hole 15 is breathable, and the pressure detection component 1 improves its breathability by providing the ventilation hole 15, reduces the risk of adhesion between the second packaging layer 14 and the skin, and thus improves the comfort of use. Exemplarily, the diameter of the ventilation hole 15 may be less than or equal to 1 mm. Among them, the number of ventilation holes 15 may be multiple, and the spacing between the multiple ventilation holes 15 may be less than or equal to 5 mm. In some other embodiments, the pressure detection component 1 may not be provided with ventilation holes 15.

[0149] Please refer to Figures 2 and 4 together. Figure 4 is a diagram of the internal structure of the pressure detection assembly 1 shown in Figure 2 in some other embodiments. The pressure detection assembly 1 of the embodiment of Figure 4 can include most of the technical features of the pressure detection assembly 1 of the embodiment of Figure 3. The following mainly describes the differences between the two, and most of the technical content that is the same between the two is not repeated.

[0150] In some embodiments, the main difference between the embodiment shown in FIG. 4 and the embodiment shown in FIG. 3 lies in the arrangement of the pressure sensor 12 .

[0151] The pressure sensor 12 includes an electrode 124 and a detection body 122. The electrode 124 is fixedly connected to the detection body 122. The electrode 124 and the detection surface 121 are located on the same side of the detection body 122. The electrode 124 is located around the detection surface 121. The electrode 124 is electrically connected to the first circuit board 11 via a bonding wire 16. For example, the detection body 122 is fixedly connected to the surface of the first circuit board 11; one end of the bonding wire 16 is electrically connected to the electrode 124, and the other end is electrically connected to the first circuit board 11, thereby achieving an electrical connection between the detection body 122 and the first circuit board 11.

[0152] For example, the first packaging layer 13 may cover the bonding wires 16. In this embodiment, the first packaging layer 13 covers the bonding wires 16, thereby protecting the bonding wires 16. In addition, the high hardness of the first packaging layer 13 also helps ensure reliable electrical connection of the bonding wires 16.

[0153] For example, the raised portion 131 of the first packaging layer 13 can be staggered with respect to the bonding wire 16. In this case, the raised portion 131 avoids the bonding wire 16. When the raised portion 131 is compressed, it does not press on the bonding wire 16, which helps to ensure the structural stability of the bonding wire 16, thereby ensuring the reliability of the electrical connection between the pressure sensor 12 and the first circuit board 11.

[0154] Please refer to Figures 2 and 5 in conjunction. Figure 5 is a diagram of the internal structure of the pressure detection assembly 1 shown in Figure 2 in some other embodiments. The pressure detection assembly 1 of the embodiment of Figure 5 can include most of the technical features of the pressure detection assembly 1 of the embodiment of Figure 3. The following mainly describes the differences between the two, and most of the technical content that is the same between the two is not repeated.

[0155] In some embodiments, the main difference between the embodiment shown in FIG. 5 and the embodiment shown in FIG. 3 lies in the arrangement of the first encapsulation layer 13 .

[0156] In some examples, the first packaging layer 13 covers the pressure sensor 12. The first packaging layer 13 includes a wrapping portion 132 and a raised portion 131 fixed to the wrapping portion 132. The wrapping portion 132 covers the pressure sensor 12. In some examples, the wrapping portion 132 can be substantially a thin film layer. The wrapping portion 132 can three-dimensionally cover the pressure sensor 12 around the portion of the pressure sensor 12 exposed relative to the first circuit board 11. The connection area between the wrapping portion 132 and the first circuit board 11 is relatively small. When there are multiple pressure sensors 12, each wrapping portion 132 can be independent of each other.

[0157] In some examples, the second encapsulation layer 14 covers the first encapsulation layer 13 and is connected to the first circuit board 11. In this case, the first encapsulation layer 13 is effectively encapsulated by the first circuit board 11 and the second encapsulation layer 14. In this embodiment, the first encapsulation layer 13 is relatively hard and serves to protect the pressure sensor 12. The raised portion 131 of the first encapsulation layer 13 is able to directly transmit force to the detection surface 121 of the pressure sensor 12. The second encapsulation layer 14 provides encapsulation and protection for the first encapsulation layer 13.

[0158] Please refer to Figures 2 and 6 in conjunction. Figure 6 is a diagram of the internal structure of the pressure detection assembly 1 shown in Figure 2 in some other embodiments. The pressure detection assembly 1 of the embodiment of Figure 6 can include most of the technical features of the pressure detection assembly 1 of the embodiment of Figure 3. The following mainly describes the differences between the two, and most of the technical content that is the same between the two is not repeated.

[0159] In some embodiments, the main difference between the embodiment shown in FIG. 6 and the embodiment shown in FIG. 3 lies in the arrangement of the protrusion 131 .

[0160] In some examples, the first packaging layer 13 may include a wrapping portion 132 and a raised portion 131. A contact surface 1311 is provided on the side of the raised portion 131 facing away from the pressure sensor 12. The contact surface 1311 may be exposed relative to the second packaging layer 14. The contact surface 1311 is used to contact the user's wrist. The contact surface 1311 may be exposed in its entirety or in part relative to the second packaging layer 14. In this embodiment, by exposing the contact surface 1311 of the raised portion 131 relative to the second packaging layer 14, the raised portion 131 can directly contact the user's wrist, which is beneficial for improving the detection sensitivity and detection accuracy of the pressure sensor 12 and providing a good user experience.

[0161] In some examples, the outer surface of the second encapsulation layer 14 facing away from the first encapsulation layer 13 is flat, and this flat surface is used to contact the user's wrist; the contact surface 1311 and the outer surface 141 of the second encapsulation layer are flush and form a complete surface. In this embodiment, because the contact surface 1311 is flush with the outer surface of the second encapsulation layer 14 and the contact surface 1311 and the outer surface 141 of the second encapsulation layer form a complete plane, the pressure detection assembly 1 not only enables the pressure sensor 12 to have higher detection sensitivity and detection accuracy, but also reduces the pressure on the user's skin through the complete flat surface contacting the user's skin, resulting in less pressure when the user wears the device, thereby improving wearing comfort.

[0162] The raised portion 131 may be in a spherical table-shaped structure; or the raised portion 131 may be in a truncated table-shaped structure or a prism-shaped structure, etc., which is not strictly limited in the embodiments of the present application.

[0163] It is understandable that, in some embodiments, the pressure sensor 12 and the connection structure between the pressure sensor 12 and the first circuit board 11 in the embodiment of FIG. 6 may also adopt the design scheme in the embodiment of FIG. 3 .

[0164] Please refer to Figures 2 and 7 in conjunction. Figure 7 is a schematic diagram of a portion of the structure of the pressure detection assembly 1 shown in Figure 2 in some embodiments. The pressure detection assembly 1 in Figure 7 can adopt the structure of the embodiments shown in Figures 3 to 6. Figure 7 mainly illustrates the relative positional relationship between the multiple pressure sensors 12 and the multiple vents 15 of the pressure detection assembly 1 and the first circuit board 11.

[0165] In some embodiments, there are multiple pressure sensors 12, and the multiple pressure sensors 12 are arranged in an interval. In this embodiment, the multiple pressure sensors 12 can collectively form a larger detection area, so that the pressure detection assembly 1 has a larger detection area and thus has better detection adaptability. In some examples, the pressure detection assembly 1 can also adapt to more detection scenarios and detection requirements through the coordination between the multiple pressure sensors 12.

[0166] In one embodiment, the plurality of pressure sensors 12 can be arranged in multiple rows, and the pressure sensors 12 in two adjacent rows are staggered. The row direction of the plurality of pressure sensors 12 arranged in a row can be parallel to the length direction of the pressure detection module 30 (see FIG1 ), so as to be arranged in the length extension direction of the wristband 20 (see FIG1 ). For example, the pressure sensors 12 in the first row are adjacent to the pressure sensors 12 in the second row, and in the vertical direction of the row direction, the centers of the pressure sensors 12 in the second row are staggered with the centers of the pressure sensors 12 in the first row, and are aligned with the positions between the centers of the two pressure sensors 12 in the first row.

[0167] In this embodiment, since the pressure sensors 12 in two adjacent rows are staggered, a larger area coverage can be achieved by setting a relatively small number of pressure sensors 12, and a denser arrangement of detection points in the row direction of multiple pressure sensors 12, so that the pressure detection component 1 can achieve pressure detection in a larger area; in addition, since the row direction of the multiple pressure sensors 12 is parallel to the length extension direction of the wristband, so that they surround the circumference of the user's wrist when the wrist wearable device is worn, a larger range of detection can be performed on the circumference of the user's wrist.

[0168] Illustratively, the length and width of the pressure sensor 12 may be less than or equal to 1 mm, the spacing between adjacent pressure sensors 12 in the same row may be less than or equal to 1.5 mm, and the row length of multiple pressure sensors 12 in each row may be less than or equal to 10 mm.

[0169] In some usage scenarios, such as static scenarios, when a user wears the wrist wearable device 100, each pressure sensor 12 can be tested and analyzed one by one to determine the pressure sensor 12 with the best signal and use that pressure sensor 12 for testing. If the signal of that pressure sensor 12 deteriorates, another pressure sensor 12 with a better signal can be searched for and tested again. In this scenario, by selecting a single pressure sensor 12 with a good detection signal for testing, power consumption can be reduced while maintaining better detection accuracy, resulting in greater energy savings.

[0170] In some usage scenarios, such as nighttime scenarios, when a user wears the wrist-worn wearable device 100, the user's wrist movements are generally less, and the pressure sensors 12 that can measure signals can be detected and confirmed at regular intervals, and signal detection can be performed through these pressure sensors 12. By detecting multiple pressure sensors 12 simultaneously, the stability of the signal can be increased.

[0171] In some usage scenarios, such as daytime scenarios, when a user wears the wrist wearable device 100, the user's wrist movements may be more frequent. When there is a detection requirement, detection can be performed simultaneously through all or most of the pressure sensors 12, and signal fusion processing can be used to enhance the signal and achieve more accurate detection.

[0172] Please refer to Figure 8, which is a schematic diagram of a portion of the structure of the pressure detection assembly 1 shown in Figure 2 in other embodiments. The pressure detection assembly 1 in Figure 8 can adopt the structure of the embodiments shown in Figures 3 to 6. Figure 8 mainly illustrates the relative positional relationship between the multiple pressure sensors 12 and the multiple vents 15 of the pressure detection assembly 1 and the first circuit board 11.

[0173] In some embodiments, the plurality of pressure sensors 12 may be arranged in an array. In this case, the plurality of pressure sensors 12 are arranged in an array, and the plurality of pressure sensors 12 can together form a larger detection area, so that the pressure detection assembly 1 has a larger detection area, thereby having better detection adaptability.

[0174] For example, the multiple pressure sensors 12 can be arranged in an array of multiple rows and columns, with the row and column directions being perpendicular and the row and column spacings being equal, so that the multiple pressure sensors 12 are distributed in a rectangular shape. The row direction of the multiple pressure sensors 12 can be parallel to the length of the wristband 20 (see FIG. 1 ); the column direction of the multiple pressure sensors 12 can be parallel to the width of the wristband 20 (see FIG. 1 ).

[0175] In this embodiment, since multiple pressure sensors 12 are arranged in an array, the arrangement of the pressure sensors 12 is more regular, which is convenient for detection by the pressure detection component 1; and by setting a relatively small number of pressure sensors 12, a larger area coverage can be achieved, so the pressure detection component 1 can achieve pressure detection in a larger area and can perform a larger range of detection on the wrist circumference.

[0176] Exemplarily, the width and length of the pressure sensor 12 may be less than or equal to 1 mm, the row spacing and column spacing of the multiple pressure sensors 12 may be less than 0.25 mm, and the row length of the multiple pressure sensors 12 may be less than or equal to 10 mm.

[0177] In some other embodiments of the present application, multiple pressure sensors 12 are arranged in a row and spaced apart from each other. Multiple pressure sensors 12 can be arranged in a row. In the wrist-worn wearable device 100, multiple pressure sensors 12 can be arranged in a row in the length direction of the wristband 20. Multiple pressure sensors 12 can achieve a larger range of detection in the circumference of the user's wrist with a smaller number. Exemplarily, the width of the pressure sensor 12 can be less than or equal to 1 mm, the spacing between adjacent pressure sensors 12 can be less than 0.25 mm, and the total length of the multiple pressure sensors 12 arranged in a row is less than or equal to 10 mm.

[0178] Please refer to FIG. 2 , FIG. 3 and FIG. 9 . FIG. 9 is a schematic structural diagram of the pressurizing assembly 2 shown in FIG. 2 in some embodiments.

[0179] In some embodiments, the pressurizing component 2 may include a fixed part 21 and a movable part 22, wherein the movable part 22 is mounted on the fixed part 21, and the movable part 22 and the fixed part 21 are movably connected, and the two can move relative to each other along a first direction. The pressure detection module 30 can be mounted on the wristband 20 through the fixed part 21. The pressurizing component 2 is stacked with the pressure detection component 1, and the pressure detection component 1 can be located on the side of the movable part 22 facing away from the fixed part 21. The pressurizing component 2 moves along the first direction relative to the fixed part 21 through the movable part 22, thereby pushing the first circuit board 11 and the pressure sensor 12 to move along the first direction.

[0180] Generally speaking, the pressure sensor 12 and the first circuit board 11 are arranged in the wearable device facing the user's wrist. Since the pressure sensor 12 needs to press the wrist skin to perform pressure detection, when the first direction is perpendicular to the detection area of ​​the user's wrist skin contacted by the pressure sensor 12, the pressure sensor 12 presses the detection area in a direction perpendicular to the detection area, thereby having higher detection accuracy.

[0181] Exemplarily, the first direction is perpendicular to the surface of the first circuit board 11. In this embodiment, the first circuit board 11 of the pressure detection assembly 1 is perpendicular to the thickness direction of the pressure detection assembly 1. Therefore, the movable member 22 pushes the pressure sensor 12 in a direction parallel to the thickness direction of the pressure detection assembly 1, so that the pressure sensor 12 can press against the wrist skin in a direction perpendicular or nearly perpendicular to the wrist skin, thereby achieving more accurate detection of the pressure pulse wave.

[0182] The power source of the pressurizing assembly 2 to drive the movable member 22 to move relative to the fixed member 21 is not strictly limited, and can be, for example, hydraulic drive, gas drive, or electric drive.

[0183] Please refer to FIG. 9 and FIG. 10 . FIG. 10 is an internal structural diagram of a portion of the pressurizing assembly 2 shown in FIG. 9 in some embodiments.

[0184] In some embodiments, the fixed member 21 and the movable member 22 can be in a nested connection relationship. For example, the fixed member 21 has a first nested portion 211, and the movable member 22 has a second nested portion 221. The first nested portion 211 and the second nested portion 221 nest together along a first direction and are movably connected. The nested direction of the fixed member 21 and the movable member 22 is also the direction of relative movement between the two. The fixed member 21 and the movable member 22 can be cylindrical structures that nest together and are slidably connected. In other embodiments, the fixed member 21 and the movable member 22 can also be a prismatic structure or a sleeve-like structure of other shapes that nest together.

[0185] In this embodiment, the fixed part 21 and the movable part 22 that fit together are easy to install, and it is easy to guide the relative movement direction of the fixed part 21 and the movable part 22, so that when the movable part 22 pushes the pressure sensor 12 against the user's wrist, the pressure direction is not easily deviated, thereby effectively ensuring the detection accuracy of the pressure sensor 12.

[0186] Exemplarily, one of the first and second sleeve portions 211, 221 is provided with a guide groove 2111, and the other is provided with a guide block 2211. The guide block 2211 is slidably connected to the guide groove 2111, and the sliding direction is parallel to the first direction (also parallel to the Z direction). In some examples, the first sleeve portion 211 is sleeved inside the second sleeve portion 221. The outer wall of the first sleeve portion 211 can be provided with a guide groove 2111, and the inner wall of the second sleeve portion 221 can be provided with a guide block 2211. The guide groove 2111 and the guide block 2211 both extend along the first direction, and the guide groove 2111 and the guide block 2211 can be slidably connected. Alternatively, a guide block may be provided on the outer wall of the first sleeve portion 211, and a guide groove may be provided on the inner wall of the second sleeve portion 221, both the guide groove and the guide block extend along the first direction (also parallel to the Z direction), and the guide groove and the guide block may be slidably connected; alternatively, a first guide groove and a first guide block may be provided at the same time in the first sleeve portion 211, and a second guide groove and a second guide block may be provided correspondingly in the second sleeve portion 221, the first guide groove and the second guide block being slidably connected, and the first guide block being slidably connected to the second guide groove; this embodiment is no longer strictly limited to this.

[0187] In this embodiment, a matching structure of a guide groove 2111 and a guide block 2211 is provided between the first sleeve portion 211 and the second sleeve portion 221, and the relative sliding direction of the two is parallel to the first direction, so that the second sleeve portion 221 moves along the first direction relative to the first sleeve portion 211, and the second sleeve portion 221 can be circumferentially limited in the circumferential direction, so that the relative movement direction between the second sleeve portion 221 and the first sleeve portion 211 is more accurate, the driving direction of the pressure detection component 1 by the pressurizing component 2 is more accurate, and the detection of the pressure detection component 1 is more precise.

[0188] Among them, the guide groove 2111 and the guide block 2211 can be designed in groups to form a guide structure. For example, the guide groove 2111 and the guide block 2211 can be set in a one-to-one correspondence. Exemplarily, a plurality of guide structures can be formed between the fixed part 21 and the movable part 22, and the plurality of guide structures can be arranged at intervals along the circumference of the fixed part 21. At this time, the plurality of guide structures can guide together to reduce the position offset of the movable part 22 during the movement relative to the fixed part 21, thereby improving the accuracy of the movement of the movable part 22. In some examples, the plurality of guide structures can be evenly arranged along the circumference of the fixed part 21 (that is, arranged at equal intervals).

[0189] For example, the number of the guide structures may be in the range of 2 to 6 groups, including 2 groups or 6 groups. In this case, the number of the guide structures can provide more accurate guidance for the movable member 22 and simplify the structure of the pressurizing assembly 2.

[0190] In some embodiments, the fixed member 21 and the movable member 22 may be integral or split. For example, to facilitate installation, the movable member 22 may be a split structure, where the movable member 22 may include a first portion and a second portion. After the fixed member 21 and the first portion of the movable member 22 are fitted together, the second portion of the movable member 22 is connected to the first portion of the movable member 22 to form a single piece.

[0191] Please refer to FIG. 2 , FIG. 9 and FIG. 11 . FIG. 11 is a top view of the pressurizing assembly 2 shown in FIG. 9 .

[0192] In some embodiments, the pressurizing component 2 can be fixed on the wristband 20 of the wrist wearable device 100 (see FIG1 ), or can be movably connected to the wristband 20 of the wrist wearable device 100. Exemplarily, the pressurizing component 2 also includes a sliding guide rail 23, which is fixed to the side of the fixed part 21 facing away from the movable part 22, and the sliding guide rail 23 is used to pass through the wristband 20 of the wrist wearable device 100. The sliding guide rail 23 can be sleeved on the wristband 20 and slidably connected to the wristband 20. The sliding direction of the sliding guide rail 23 is the length direction of the sliding guide rail 23, and the length direction of the sliding guide rail is parallel to the X direction, that is, the length direction of the sliding guide rail 23 is the same as the length extension direction (X direction) of the wristband 20.

[0193] In this embodiment, the position of the sliding guide rail 23 relative to the wristband 20 is adjusted by sliding the sliding guide rail 23 relative to the wristband 20, thereby adjusting the relative position of the pressurizing component 2 and the wristband 20, and adjusting the position of the pressure detection component 1, so that the pressure sensor 12 can basically face the artery of the wrist, thereby improving the detection accuracy of the wrist-worn device 100.

[0194] In some examples, the sliding guide rail 23 forms a sliding cavity 231, the width of which can be adapted to the width of the wristband 20, and the thickness of which can be adapted to the thickness of the wristband 20. In this case, the sliding guide rail 23 can be stably mounted on the wristband 20 and can move relative to the wristband 20, thereby ensuring the stability and slidability of the connection between the pressure assembly 2 and the wristband 20. The width direction of the sliding guide rail 23 is parallel to the Y direction, i.e., the width direction of the sliding guide rail 23 is the same as the width direction of the wristband 20; the thickness direction of the sliding guide rail 23 is parallel to the Z direction, i.e., the thickness direction of the sliding guide rail 23 is the same as the thickness direction of the wristband 20.

[0195] In other examples, the width of the sliding guide rail 23 can be slightly smaller than the width of the wristband 20, and / or the thickness of the sliding guide rail 23 can be slightly smaller than the thickness of the wristband 20, so that there is damping between the wristband 20 and the inner wall of the sliding guide rail 23 to reduce the shaking between the sliding guide rail 23 and the wristband 20, making it easy for the user to adjust the position of the sliding guide rail 23 relative to the wristband 20, thereby ensuring a stable connection between the pressure component 2 and the wristband 20.

[0196] In some embodiments, the pressure component 2 may further include a clamp 24, which is fixedly connected to the fixing member 21. By providing the clamp 24, the clamp 24 is used to be detachably connected to the wristband 20, so that the pressure component 2 can be detachably connected to the wristband 20, which facilitates the adjustment of the position of the pressure component 2. The clamp 24 can be fixed to one side of the fixing member 21, and the arrangement direction of the clamp 24 and the fixing member 21 can be parallel to the sliding direction of the sliding guide rail 23, and thus parallel to the length extension direction of the wristband 20. The fixing member 21 and the clamp 24 can be located on the inner side of the wristband 20. Exemplarily, when the wristband 20 is made of nylon, the clamp 24 can be a Velcro, which is easy to repeatedly adhere to and tear off from the wristband 20. When it is necessary to move the pressure component 2, the clamp 24 can be separated from the wristband 20 first, the pressure component 2 can be adjusted to a suitable position, and then the clamp 24 can be fixedly connected to the wristband 20, thereby fixing the position of the pressure component 2 and preventing the pressure component 2 from loosening. In some other embodiments, a connection structure such as a snap connection or a magnetic connection can also be used between the clamp 24 and the wristband 20. For example, when the main body of the wristband 20 is made of steel, the clamp 24 can be a magnet, and the clamp 24 can be magnetically attracted to the wristband 20 to achieve a fixed connection between the pressure component 2 and the wristband 20. When it is necessary to move the pressure component 2, the clamp 24 can be separated from the wristband 20 first, the pressure component 2 can be adjusted to a suitable position, and then the clamp 24 can be fixedly connected to the wristband 20, thereby fixing the position of the pressure component 2 and preventing the pressure component 2 from loosening.

[0197] In some embodiments, the power source for the pressurizing assembly 2 to drive the movable member 22 relative to the fixed member 21 may be an air source. In this case, the pressurizing assembly 2 may also be provided with an air inlet nozzle 25. In this embodiment, the air inlet nozzle 25 may be connected to a gas pipeline external to the pressurizing assembly 2 to receive external air as a power source for the pressurizing assembly 2. The air inlet nozzle 25 may be mounted on a side of the fixed member 21 facing away from the movable member 22 and connected to the fixed member 21. The air inlet nozzle 25 may be exposed relative to the fixed member 21 to facilitate communication with the gas pipeline external to the pressurizing assembly 2.

[0198] The following describes the fixed member 21 , the movable member 22 and the driving structure of the movable member 22 with examples.

[0199] Please refer to FIG. 12 , which is a schematic diagram of the internal structure of the pressurizing assembly 2 shown in FIG. 9 in some embodiments.

[0200] In some embodiments, the fixing member 21 may include the first fitting portion 211 and the fixing portion 212, wherein the fixing portion 212 is connected to one end of the first fitting portion 211, and the other end of the first fitting portion 211 may be the first open end 213. The movable member 22 may include the second fitting portion 221 and the pushing portion 222, wherein the pushing portion 222 is connected to one end of the second fitting portion 221, and the other end of the second fitting portion 221 may be the second open end 223. The second fitting portion 221 fits into the first fitting portion 211, and the pushing portion 222 and the fixing portion 212 are arranged relative to each other. At this time, the pushing portion 222 faces the first open end 213, and the fixing portion 212 faces the second open end 223.

[0201] Illustratively, the pressurizing assembly 2 forms a driving air chamber 210 between the fixed portion 212 and the pushing portion 222. By inflating the driving air chamber 210, the pushing portion 222 can be moved relative to the fixed portion 212. At this time, the movable member 22 moves in a first direction to push the pressure detection assembly 1 to move. Illustratively, the air inlet nozzle 25 of the pressurizing assembly 2 can pass through the fixed portion 212, with one end of the air inlet nozzle 25 communicating with the driving air chamber 210, facilitating the entry of gas from the air inlet nozzle 25 into the driving air chamber 210.

[0202] In this embodiment, the pressurizing component 2 drives the movable part 22 by setting a driving air cavity 210, and the air source inflates the driving air cavity 210. Compared with the scheme of using mechanical structure drive (such as rack slider transmission, etc.), the driving structure design of this embodiment is more flexible and smaller in size, which is conducive to the miniaturization design of the pressurizing component 2 and the pressure detection module 30.

[0203] In some embodiments, the pressurizing assembly 2 may further include an airbag 26a, which is installed between the fixing portion 212 and the pushing portion 222, and the driving air chamber 210 is located within the airbag 26a. In other words, the driving air chamber 210 is formed in the airbag 26a and is formed by the internal space of the airbag 26a. The airbag 26a can be connected to the air inlet nozzle 25 so as to facilitate inflation or deflation through the air inlet nozzle 25. Exemplarily, the airbag 26a can be a laminated airbag 26a, that is, the airbag 26a can be formed by a plurality of interconnected and stacked sub-airbags 261a, and the airbag 26a can expand and contract in at least a first direction. When the airbag 26a is inflated, the airbag 26a extends along the first direction and pushes the pushing portion 222, causing the movable part 22 to move; when the airbag 26a is not inflated, the airbag 26a retracts and the movable part 22 returns to its original position. At this time, the laminated airbag is easy to assemble, and when inflated, the multiple sub-airbags 261a cooperate to make the inflation direction of the airbag 26a more accurate and the inflation more reliable.

[0204] In this embodiment, the airbag 26a is relatively easy to install, and the sealed environment of the driving air chamber 210 formed by the airbag 26a is relatively reliable, thereby improving the driving reliability of the pressurizing assembly 2. When the airbag 26a is retracted, the gas in the airbag 26a can be released through the air inlet nozzle 25, or through other means, such as through a controllable air valve provided between the driving air chamber 210 and the atmosphere.

[0205] Illustratively, connecting holes 262a are provided between adjacent sub-airbags 261a. These connecting holes 262a are used to allow gas to flow between the adjacent sub-airbags 261a, thereby causing the airbags 26a to expand and contract. The connecting holes 262a of the multiple sub-airbags 261a can be arranged in a staggered manner. For example, the connecting holes 262a can be located away from the center of the sub-airbag 261a, i.e., the connecting holes 262a are eccentrically positioned. The eccentricity of adjacent connecting holes 262a can be opposite, so that the connecting holes 262a are staggered. In this manner, gas flows in a zigzag manner between the sub-airbags 261a, allowing each sub-airbag 261a to fully expand. This ensures a more stable push of the airbags 26a on the movable member 22, thereby improving the detection accuracy of the pressure detection assembly 1. In other embodiments, the connecting holes 262a of the multiple sub-airbags 261a can be aligned, i.e., the connecting holes 262a are arranged linearly. At this time, the gas flows faster between the sub-airbags 261a, and the airbag 26a expands faster, making the pressure detection component 1 detect faster.

[0206] In some embodiments, the top surface of the fixing portion 212 can be a curved surface, such as an arc surface, so that the shape of the fixing portion 212 can be easily adapted to the shape of the wristband 20. The clamp 24 can be fixed to the side of the fixing portion 212, making it easy to connect it to the wristband 20.

[0207] In some embodiments, the pressurizing assembly 2 may further include a rolling element 27. The rolling element 27 is located between the first and second engaging portions 211, 221 and contacts both the first and second engaging portions 211, 221. In this embodiment, the rolling element 27 is used to reduce friction during the relative movement of the first and second engaging portions 211, 221, thereby improving the smoothness of the relative movement between the first and second engaging portions 211, 221, reducing the risk of jamming, and making the pressurizing action of the pressurizing assembly 2 more reliable.

[0208] Exemplarily, the rolling element 27 can be a spherical ball or a cylindrical ball, etc. The first fitting portion 211 or the second fitting portion 221 is provided with a ball groove 271, and the rolling element 27 is located in the ball groove 271; when the first fitting portion 211 and the second fitting portion 221 move relative to each other, the rolling element 27 rolls or slides on the side wall of the first fitting portion 211 and / or the second fitting portion 221.

[0209] In some examples, the rolling element 27 can be provided in the guide structure. For example, the guide block 2211 of the guide structure can be provided with a ball groove 271, and the rolling element 27 is installed in the ball groove 271, and the rolling element 27 contacts the groove wall of the guide groove 2111. For example, the end of the second fitting part 221 near the second opening end 223 is provided with a guide block 2211, and the side wall 2112 of the guide groove of the guide block 2211 facing the first fitting part 211 is provided with a ball groove 271. In this case, the friction between the guide block 2211 and the guide groove 2111 can be reduced, and the structure of the pressurizing assembly 2 can be made more compact. In other examples, the rolling element 27 may not be provided in the guide structure. For example, the outer wall of the first fitting part 211 near the first opening end 213 is provided with a ball groove 271, and the ball groove 271 is facing the inner wall of the second fitting part 221.

[0210] For example, multiple rolling elements 27 may be provided. The multiple rolling elements 27 may be divided into multiple groups, with at least two groups arranged along the first direction. This allows the movable element 22 to have at least two sets of friction-reducing points relative to the fixed element 21 in the first direction, resulting in a better drag reduction effect. The at least one group of rolling elements 27 may include two or more rolling elements 27 spaced apart circumferentially. This allows the movable element 22 to have at least two friction-reducing points relative to the fixed element 21 in the circumferential direction, resulting in more uniform circumferential resistance on the movable element 22 and more stable movement of the movable element 22.

[0211] Exemplarily, a guide block 2211 is provided at the end of the second fitting portion 221 near the second open end 223. The guide block 2211 defines a first ball rolling groove 271 on the sidewall 2112 of the guide groove of the first fitting portion 211. The guide grooves 2111 are evenly arranged along the circumference of the first ball rolling groove 271. The first rolling element 27 is mounted in the first ball rolling groove 271, and the rolling element 27 abuts the first ball rolling groove 271 and the sidewall 2112 of the guide groove. The number of first ball rolling grooves 271 can be four, and the number of first rolling elements 27 is also set to four accordingly. Furthermore, a second ball rolling groove 271 is provided on the outer wall of the first fitting portion 211 near the first open end 213. The second ball rolling groove 271 is aligned with the first ball rolling groove 271 in the first direction, and the second ball rolling groove 271 faces the inner wall of the second fitting portion 221. The number of second ball rolling grooves 271 can be four, and the number of second rolling elements 27 can also be set to four accordingly.

[0212] In some embodiments, the pressurizing assembly 2 may further include an elastic member 28 that elastically connects the first sleeve portion 211 and the second sleeve portion 221. In this embodiment, the elastic member 28 has a reset function, and is used to maintain the movable member 22 in the initial position or return it to the initial position when the pressurizing assembly 2 is not pressurized.

[0213] Exemplarily, the elastic member 28 can be located in the guide groove 2111 between the first sleeve portion 211 and the second sleeve portion 221 to improve the space utilization of the pressurizing assembly 2. For example, when the guide block 2211 of the second sleeve portion 221 is located between the fixed portion 212 and the bottom wall 2113 of the guide groove of the first sleeve portion 211, the elastic member 28 can be located between the guide block 2211 of the second sleeve portion 221 and the bottom wall 2113 of the guide groove of the first sleeve portion 211. The elastic force direction of the elastic member 28 can be the same as the first direction, and the elastic member 28 can apply a pressing force between the first sleeve portion 211 and the second sleeve portion 221. The pressing force causes the second sleeve portion 221 to approach the fixed portion 212 to prevent the movable member 22 from separating from the fixed member 21.

[0214] In this embodiment, the movable member 22 can be pushed by the gas and moved away from the fixed member 21, and the elastic member 28 is compressed. When the movable member 22 is no longer pushed by the gas, the elastic member 28 rebounds, causing the movable member 22 to return to its original position. In addition, when the movable member 22 is in its initial position, the elastic member 28 can have a predetermined pressing force, which keeps the movable member 22 in its initial position and prevents it from moving or loosening.

[0215] For example, the number of elastic members 28 can be in the range of 2 to 6, including 2 or 6. For example, the number of elastic members 28 can be the same as the number of guide structures, with the two corresponding one to one. Alternatively, the number of elastic members 28 can be less than the number of guide structures, and this is not strictly limited in this embodiment. The elastic members 28 can be springs or other elastic components.

[0216] In some other embodiments, the elastic member 28 may not be provided. After the pressure-applying component 2 applies pressure to push the pressure detection component 1 to move, a rebound force is generated when the user's wrist is pressed, driving the pressure detection component 1 to move and pushing the movable member 22 toward the fixed member 21 to achieve the reset of the movable member 22.

[0217] Please refer to Figures 2 and 13 in combination. Figure 13 is an internal structure diagram of another embodiment of the pressurizing component 2 shown in Figure 9. The pressure detection component 1 of the embodiment of Figure 13 can include most of the technical features of the pressure detection component 1 of the embodiment of Figure 12. The following mainly explains the difference between the two, and most of the technical contents that are the same between the two are not repeated.

[0218] In some embodiments, the embodiment shown in FIG13 differs primarily from the embodiment shown in FIG12 in the implementation structure of the driving air cavity 210. In some embodiments, the pressurizing assembly 2 further comprises an elastic membrane 26b, wherein the first sleeve portion 211 is sleeved inside the second sleeve portion 221, and the elastic membrane 26b is sealed to the first open end 213 of the first sleeve portion 211. The fixing portion 212, the first sleeve portion 211, and the elastic membrane 26b collectively form the driving air cavity 210. The driving air cavity 210 is connected to the air inlet nozzle 25, and gas outside the pressurizing assembly 2 can enter the driving air cavity 210 through the air inlet nozzle 25.

[0219] The elastic membrane 26b seals the first open end 213 and can be positioned close to the push portion 222. When the driving air chamber 210 is inflated, the elastic membrane 26b deforms under the force, bulging away from the fixed portion 212, i.e., toward the push portion 222. The elastic membrane 26b abuts against and pushes the push portion 222, thereby driving the push portion 222. When the driving air chamber 210 is depressurized, the elastic membrane 26b retracts under its own elastic force, and the movable member 22 is reset under the action of the elastic member 28.

[0220] In this embodiment, the elastic membrane 26b has a simple structure and is easy to install. Furthermore, the elastic membrane 26b is located close to the push portion 222, allowing the push portion 222 to be directly pushed by the gas. For example, the elastic membrane 26b may be made of silicone. The hardness of the elastic membrane 26b may be less than or equal to Shore A5, and the elastic modulus may be less than or equal to 50 kPa, providing the elastic membrane 26b with good deformability.

[0221] Please continue to refer to Figure 14, which is a diagram of the internal structure of another embodiment of the pressurizing assembly 2 shown in Figure 9. The pressure detection assembly 1 of the embodiment of Figure 14 can include most of the technical features of the pressure detection assembly 1 of the embodiment of Figure 12. The following mainly describes the differences between the two, and most of the common technical content between the two is not repeated. In some embodiments, the embodiment shown in Figure 14 and the embodiment shown in Figure 12 mainly differ in the implementation structure of the driving air cavity 210.

[0222] In some embodiments, the pressurizing component 2 may further include a folding membrane 26c, the first sleeve portion 211 is sleeved on the inner side of the second sleeve portion 221, the folding membrane 26c is sealed and connected to the first open end 213 of the first sleeve portion 211, the fixing portion 212, the first sleeve portion 211 and the folding membrane 26c together form a driving air cavity 210, and the driving air cavity 210 is connected to the air inlet nozzle 25, and the gas outside the pressurizing component 2 can enter the driving air cavity 210 through the air inlet nozzle 25.

[0223] The folding membrane 26c may include a folding portion 261c and a connecting portion 262c. The folding portion 261c and the connecting portion 262c may be integrally formed structural members. The folding portion 261c is folded and sealed to the first open end 213. The folding portion 261c may be unfolded along a first direction. The connecting portion 262c is disposed corresponding to the pushing portion 222 and may be close to the pushing portion 222. The connecting portion 262c may be circular and may not have deformability. In this case, the folding membrane 26c has good deformability and good reliability.

[0224] In this embodiment, when the driving air chamber 210 is inflated, the folded portion 261c of the folded membrane 26c is forced to expand, and the connecting portion 262c of the folded membrane 26c abuts and pushes the pushing portion 222 to move. When the driving air chamber 210 is depressurized, the movable member 22 returns to its original position, driving the folded membrane 26c with it. The folded membrane 26c is easily assembled with the first fitting portion 211, and while it can fold, its material does not experience stretching, resulting in a long service life and greater reliability.

[0225] Please refer to Figures 2 and 15 in conjunction. Figure 15 illustrates the internal structure of another embodiment of the pressurizing assembly 2 shown in Figure 9. The pressure detection assembly 1 of the embodiment of Figure 15 may include most of the technical features of the pressure detection assembly 1 of the embodiment of Figure 12. The following primarily describes the differences between the two, and the majority of the common technical content between the two will not be repeated. In some embodiments, the primary difference between the embodiment of Figure 15 and the embodiment of Figure 12 lies in the implementation structure of the drive air cavity 210.

[0226] In some embodiments, the pressurizing assembly 2 further includes a seal 26d, which seals the first sleeve portion 211 and the second sleeve portion 221 ; the driving air cavity 210 is surrounded by the first sleeve portion 211 , the second sleeve portion 221 and the seal 26d, and the driving air cavity 210 can be connected to the air inlet nozzle 25 .

[0227] Among them, the sealing member 26d can be a sealing ring, and a sealing groove 261d can be opened on the outer side of the first open end 213 of the first sleeve part 211. The sealing member 26d is embedded in the sealing groove 261d. At the same time, the sealing member 26d abuts against the inner wall of the second sleeve part 221, so that the first sleeve part 211 and the second sleeve part 221 are sealed and connected, and the two can slide relative to each other.

[0228] In this embodiment, by inflating the driving air chamber 210, which is sealed, the gas directly propels the pusher. After the driving air chamber 210 is depressurized, the movable member 22 returns to its original position. The sealing member 26d seals the first and second fitting portions 211, 221, thereby directly forming the driving air chamber 210. This provides a relatively simple and reliable structure.

[0229] Please refer to Figure 2, Figure 16 to Figure 17 in combination. Figure 16 is an internal structure diagram of the conditioning circuit assembly 3 shown in Figure 2 in some embodiments, and Figure 17 is a bottom view of the conditioning circuit assembly 3 shown in Figure 16.

[0230] In some embodiments, the conditioning circuit assembly 3 may include a fixed housing 31 . The fixed housing 31 may be fixedly connected to the pressurizing assembly 2 , wherein the bottom of the fixed housing 31 may be fixed to the top of the pressurizing assembly 2 .

[0231] Exemplarily, the pressure component 2 can also be detachably connected to the conditioning circuit component 3 by means of buckles, screws, magnetism, etc. For example, the pressure component 2 can also include a first magnetic member 29, which can be installed on the top surface of the sliding guide rail 23. When the pressure component 2 is installed on the wristband 20, the first magnetic member 29 can be located on the outside of the wristband 20. A second magnetic member 32 can be provided at the bottom of the fixed shell 31, and the second magnetic member 32 is used to magnetically connect with the first magnetic member 29 (as shown in Figure 11) of the pressure component 2. Through the magnetic attraction of the first magnetic member 29 and the second magnetic member 32, the fixed shell 31 and the sliding guide rail 23 are fixed to each other, so that the conditioning circuit component 3 and the pressure component 2 are fixed to each other; when it is necessary to separate the conditioning circuit component 3 and the pressure component 2, the first magnetic member 29 and the second magnetic member 32 can be separated to separate the conditioning circuit component 3 from the pressure component 2, so that the user can separate the pressure detection module 30 from the wristband 20 as needed.

[0232] It is understood that in other embodiments, hinges or the like may be used to achieve a detachable connection between the fixed housing 31 and the pressurizing assembly 2. In other embodiments, the conditioning circuit assembly 3 may be non-detachably connected to the pressurizing assembly 2 by welding, bonding, or the like.

[0233] The bottom surface of the fixed housing 31 can directly contact the top surface of the sliding guide rail 23. The bottom surface of the fixed housing 31 can be set as a curved surface, which matches the curved surface of the sliding guide rail 23. When the wrist wearable device 100 is worn on the user's wrist, the wristband 20 is curved. At this time, the fixed housing 31 is easy to adapt to the wristband 20, making the structure more reasonable.

[0234] In some embodiments, the conditioning circuit assembly 3 also includes a display screen 33. The display screen 33 is convenient for independently displaying the detection content, which is convenient for users to use. The display screen 33 can be installed on the top of the fixed shell 31. It is convenient for users to directly observe the display screen 33. The display screen 33 can be displayed independently according to needs. For example, an electrocardiogram curve can be displayed, or indicators such as heart rate and blood pressure can be displayed. Exemplarily, the display screen 33 can be a flexible screen, which can be installed to better adapt to the shape of the top of the fixed shell 31. For example, a mounting groove can be set on the top of the fixed shell 31, and the size of the mounting groove can be adapted to the size of the display screen 33. The display screen 33 is installed in the mounting groove to protect the display screen 33.

[0235] 16 and 18 , FIG18 is a diagram showing the internal structure of the conditioning circuit assembly 3 shown in FIG16 from another perspective.

[0236] The conditioning circuit assembly 3 may further include a second circuit board 34 and a chip 35. The second circuit board 34 may be located in the interior space of the fixed housing 31, and the chip 35 may be fixed to and electrically connected to the second circuit board 34. In some examples, the chip 35 may process the signal detected by the pressure sensor 12 to obtain a corresponding result, and may also display the result on the display screen 33 to reduce the computing pressure of the device body 10. In other examples, the chip 35 may be a simple circuit without data processing capabilities but with data transmission capabilities.

[0237] The conditioning circuit assembly 3 may further include an air inlet pipe 36, which may be located in the inner space of the fixed housing 31. The air inlet pipe 36 has an air inlet end 361 and an air outlet end 362. The air inlet end 361 may be located on the side of the fixed housing 31 to facilitate docking with the air guide pipe 403 in the connection circuit module 40; the air outlet end 362 may be located on the bottom surface of the fixed housing 31 to facilitate docking with the air inlet nozzle 25 of the pressurizing assembly 2; at this time, the driving air cavity 210 (as shown in FIG. 12 ) is connected to the outside world through the air inlet nozzle 25 and the air inlet pipe 36 of the conditioning circuit assembly 3, fully utilizing the space of the pressurizing assembly 2 and having a simple structure.

[0238] For example, the second circuit board 34 can be positioned to avoid the air inlet pipe 36, achieving a compact layout. This fully utilizes the thickness of the conditioning circuit assembly 3, reduces the thickness of the conditioning circuit assembly 3, and facilitates a miniaturized design of the conditioning circuit assembly 3. For example, the second circuit board 34 and the air inlet pipe 36 can be positioned side by side, that is, both can be fixed to the inner bottom wall of the fixed housing 31. The second circuit board 34 can be positioned outside the distribution area of ​​the air inlet pipe 36 on the inner bottom wall of the fixed housing 31 to avoid the air inlet pipe 36. In other embodiments, the second circuit board 34 and the air inlet pipe 36 can be stacked. For example, the second circuit board 34 can be mounted on the inner bottom wall of the fixed housing 31, with the air inlet pipe 36 located on the side of the second circuit board 34 away from the bottom wall of the fixed housing 31. A clearance hole is defined in the second circuit board 34 for passing the air inlet pipe 36 through the clearance hole to allow the air inlet pipe 36 to communicate with the pressurizing assembly 2.

[0239] Exemplarily, the conditioning circuit assembly 3 may further include a first interface 37 and a second interface 38. The first interface 37 and the second interface 38 are both electrically connected to the second circuit board 34. The first interface 37 is located on a side of the fixed housing 31 and may be parallel to the air inlet end 361 to facilitate docking with the connecting wire 402 in the connection circuit module 40; the second interface 38 is located on the other side of the fixed housing 31 to facilitate electrical connection with the pressure detection assembly 1.

[0240] Please refer to FIG. 2 and FIG. 19 to FIG. 20 . FIG. 19 is an internal structural diagram of the pressure detection module 30 shown in FIG. 2 , and FIG. 20 is a structural diagram of the conditioning circuit assembly 3 shown in FIG. 19 in some embodiments.

[0241] In some embodiments, the conditioning circuit assembly 3 may further include a conditioning wire 39 and a wire protective shell 310. The conditioning wire 39 electrically connects the second circuit board 34 and the first circuit board 11. The conditioning wire 39 is a stretchable wire. The conditioning wire 39 is at least partially located in the wire protective shell 310. The wire protective shell 310 is used to protect the conditioning wire 39.

[0242] Exemplarily, the wire protection housing 310 is located to the side of the pressurized assembly 2 and can be fixed to the pressurized assembly 2. The wire protection housing 310 includes a first sub-shell 3101 and a second sub-shell 3102. The first sub-shell 3101 is fixed to the fixed member 21, and the second sub-shell 3102 is fixed to the movable member 22. The first sub-shell 3101 and the second sub-shell 3102 are movably connected to form a telescopic cavity, and the conditioning wire 39 is at least partially located in the telescopic cavity. For example, the first sub-shell 3101 can be molded on the fixed member 21, and the second sub-shell 3102 can be molded on the movable member 22. The first sub-shell 3101 and the second sub-shell 3102 are connected to form an elongated telescopic cavity.

[0243] In this embodiment, when the fixed part 21 and the movable part 22 move relative to each other, the first sub-shell 3101 and the second sub-shell 3102 move relative to each other synchronously, thereby stretching the telescopic cavity to match the stretching of the conditioning wire 39 itself and protect the conditioning wire 39 at the same time.

[0244] Exemplarily, the conditioning wire 39 can be a spiral wire that is stretchable. The conditioning wire 39 can extend in a wavy shape. For example, the connecting wire 402 can have a plurality of bends 391, and the bends 391 can be semicircular. The bends 391 are interconnected, so that the conditioning wire 39 is wavy as a whole. In other cases, the conditioning circuit assembly 3 can also include a wire sleeve 311, which is used to encapsulate the conditioning wire 39. The wire sleeve 311 can be made of a flexible material, and the wire sleeve 311 itself can be elastically retractable. When the wire sleeve 311 is subjected to force, it can be retracted and deformed, and the zigzag setting of the conditioning wire 39 can be retracted and deformed synchronously to ensure reliable electrical connection when the pressure sensor 12 moves, and can provide better protection for the conditioning wire 39.

[0245] For example, there may be multiple conditioning wires 39, and the multiple conditioning wires 39 may be arranged side by side. For example, if there are two conditioning wires 39, the two conditioning wires 39 are aligned side by side, and the two conditioning wires 39 can have the same length, and the bending portions 391 of the two conditioning wires 39 can have the same degree of bending, so that the two conditioning wires 39 have the same degree of expansion and contraction, thereby improving the consistency of the two conditioning wires 39 during use.

[0246] Exemplarily, the telescopic cavity is sealed relative to the exterior of the guide protective housing. For example, a sealing connector can be provided at the connection between the first sub-housing 3101 and the second sub-housing 3102. The sealing connector is slidably connected to the first sub-housing 3101 and / or the second sub-housing 3102, enabling the telescopic cavity to expand and contract and sealing the telescopic cavity relative to the exterior of the protective housing to prevent the ingress of impurities or liquids into the telescopic cavity, thereby increasing the service life of the pressurizing assembly 2.

[0247] Please refer to FIG. 1 and FIG. 21 in combination. FIG. 21 is a schematic structural diagram of a portion of the wristband 20 shown in FIG. 1 in some embodiments.

[0248] In some embodiments, the wristband 20 may include a loop 201 and a body 202. Exemplarily, there may be two loops 201, each connected to the two ends of the device body 10. The loop 201 may be annular, and the body 202 may be inserted into the loop 201. Exemplarily, the body 202 may include a fixed end 2021 and a free end 2022. The fixed end 2021 is fixedly connected to one loop 201, and the free end 2022 is inserted into the other loop 201, forming a detachable connection.

[0249] The strap 202 is flexible and can be made of woven nylon. In some cases, the strap 202 can also be made of leather or metal. For example, two fixing posts 2023 are provided at the free end 2022 of the strap 202. The fixing posts 2023 can protrude outward. The middle portion of the strap 202 can be provided with multiple rows of fixing holes 2024, spaced apart along the length of the strap 202, for example, evenly spaced. The length of the strap 202 also extends along the length of the wristband 20. Each row can have two fixing holes 2024, with the spacing between the fixing holes 2024 being the same as the spacing between the fixing posts 2023. The fixing posts 2023 are designed to engage with the fixing holes 2024, securing the free end 2022 relative to a position in the middle portion of the strap 202, thereby securing the wristband 200 on the user's wrist.

[0250] In some embodiments, when the pressure detection module 30 is movably connected to the wristband 20, a sliding guide rail 23 can be provided within the pressure detection module 30. The band body 202 of the wristband 20 is passed through the sliding guide rail 23. The band body 202 can be slidably connected to the sliding guide rail 23 to facilitate adjustment of the position of the pressure detection module 30. The pressure detection module 30 can be fixed relative to the band body 202 by a clamp 24.

[0251] The wristband 20 may further include an adjustment slot 2025 on the band body 202. The adjustment slot 2025 extends through the band body 202. The adjustment slot 2025 has the same length as the band body 202. The adjustment slot 2025 is used to pass components of the pressure detection module 30 to avoid corresponding components (such as the air inlet nozzle 25). This allows the pressure detection module 30 to be adjusted on the band body 202, facilitating detection of pressure pulse waves on the user's wrist.

[0252] Please refer to Figure 1, Figure 22 and Figure 23 in combination. Figure 22 is a top view of a partial structure of the wrist wearable device 100 shown in Figure 1 in some embodiments, and Figure 23 is a bottom view of a partial structure of the wrist wearable device 100 shown in Figure 1 in some embodiments.

[0253] In some examples, the pressure detection module 30 can be mounted on the strap 202. The strap 202 passes through the pressurizing assembly 2 of the pressure detection module 30, and the conditioning circuit assembly and pressure detection assembly 1 of the pressure detection module 30 are located on either side of the strap 202. For example, the pressure sensor 12 of the pressure detection assembly 1 is located at the very bottom of the pressure detection module 30, allowing the pressure sensor 12 to directly contact the user's wrist skin when the wrist wearable device 100 is worn. When the conditioning circuit assembly 3 includes a display screen 33 (see FIG. 16 ), the display screen 33 is located at the very top of the pressure detection module 30, allowing the user to directly view the display screen 33.

[0254] Please refer to Figures 24 and 25 in combination. Figure 24 is a front view of a partial structure of the wrist wearable device 100 shown in Figure 1; Figure 25 is a side view of a partial structure of the wrist wearable device 100 shown in Figure 24.

[0255] In some examples, the connection circuit module 40 is located outside the wristband 20. In this case, when the user wears the wrist wearable device 100, the connection circuit module 40 is away from the user's wrist and does not contact the user's wrist, which provides a better user experience. In addition, the connection circuit module 40 is not affected by the skin of the user's wrist when it is stretched and deformed, making it easy to stretch, thereby making it easier to adjust the position of the pressure detection module 30.

[0256] In some examples, the connection line module 40 can be connected to the device body 10 at one end and to the pressure detection module 30 at the other end. In this case, the connection line module 40 can be used to achieve electrical or gas connection between the pressure detection module 30 and the device body 10 as needed.

[0257] Please refer to FIG. 1 , FIG. 26 and FIG. 27 . FIG. 26 is a schematic structural diagram of the connecting circuit module 40 shown in FIG. 1 , and FIG. 27 is a schematic structural diagram of the connecting wire 402 shown in FIG. 26 .

[0258] In some embodiments, the connection circuit module 40 includes a base 401, a connecting wire 402, and an air duct 403. The connection circuit module 40 can be used to electrically connect the device body 10 and the pressure detection module 30, and can also be used to pneumatically connect the device body 10 and the pressure detection module 30. The connection circuit module 40 can be fixedly connected to the device body 10 and the pressure detection module 30, respectively. The connection circuit module 40 is capable of expansion and contraction, and its expansion and contraction amount can be set to be greater than or equal to 50% of its overall length, for example, greater than or equal to 80%.

[0259] Illustratively, the substrate 401 covers the connecting wires 402 and the air guide tube 403, and is used to encapsulate the connecting wires 402 and the air guide tube 403 to protect the connecting wires 402 and the air guide tube 403. The substrate 401 may be made of a flexible material, for example, silicone.

[0260] Exemplarily, the connecting wire 402 may have multiple wires, and the connecting wire 402 may be used for power supply or for transmitting electrical signals, which is not strictly limited here. The connecting wire 402 may extend in a wavy shape. For example, the connecting wire 402 may have multiple first bends 4021, and the first bends 4021 may be semicircular. The first bends 4021 are interconnected, so that the connecting wire 402 is wavy as a whole. In some other embodiments, the connecting wire 402 may also extend in a spiral shape, which is not specifically limited here. Therefore, the connecting wire 402 can be stretched and contracted in its extension direction and has a certain amount of deformation. When the connecting wire 402 is subjected to force, it can be stretched and can retract after the external force is released.

[0261] For example, connecting wire 402 may further include a base layer 4022 and a conductor layer 4023, with base layer 4022 being sheathed over the conductive layer. Conductor layer 4023 may be a single conductor, which is easier to install, or may be two conductors, which saves space. This is not a strict limitation. Conductor layer 4023 may be made of copper, and base layer 4022 may be made of a polyimide film.

[0262] Exemplarily, the air duct 403 is used to transport the gas from the gas source in the device body 10 to the pressure detection module 30. In this embodiment, the above-mentioned gas is used to actively apply pressure to pressurize the pressure sensor 12 in the pressure detection module 30 against the wrist. Exemplarily, the air duct 403 can also extend in a wavy shape. For example, the air duct 403 can have multiple second bends 4031, and the second bends 4031 can be semicircular. The second bends 4031 are interconnected, so that the air duct 403 is wavy as a whole. In some other embodiments, the air duct 403 can also extend in a spiral shape, which is not specifically limited here. Therefore, the air duct 403 can be stretched and contracted in its extension direction and has a certain amount of deformation. When the air duct 403 is subjected to force, it can be stretched and can retract after the external force is released.

[0263] In this embodiment, the base 401 itself can elastically expand and contract, and the connecting wire 402 and the air duct 403 can also be deformed and expanded based on their shape arrangement, so that the connecting line module 40 as a whole can have tensile properties. When the pressure detection component 1 of the pressure detection module 30 moves, it can drive the connecting line module 40 to expand and contract, so as to ensure stable electrical connection and air connection between the pressure detection module 30 and the equipment body 10.

[0264] In some other embodiments, the pressurizing component 2 may also be driven by a non-gas source, and the air guide tube 403 may not be provided corresponding to the connecting line module 40 .

[0265] It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. In other words, the multiple embodiments described above can also be arbitrarily combined according to actual needs. It should be noted that all the above drawings are illustrative illustrations of this application and do not represent the actual size of the product. Moreover, the dimensional ratio relationship between the components in the drawings is not intended to limit the actual product of this application.

[0266] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A pressure detection module (30), applied to a wrist wearable device (100), characterized in that: The pressure detection module (30) comprises: A first circuit board (11); A pressure sensor (12) fixed to a surface of the first circuit board (11) and electrically connected to the first circuit board (11); a first packaging layer (13) fixed to a surface of the first circuit board (11) and covering the pressure sensor (12), the first packaging layer (13) comprising a protrusion (131), the protrusion (131) being located on a side of the pressure sensor (12) facing away from the first circuit board (11) and at least partially facing a detection surface (121) of the pressure sensor (12); and The second packaging layer (14) is fixed to a side of the first packaging layer (13) facing away from the first circuit board (11), and the hardness of the second packaging layer (14) is smaller than the hardness of the first packaging layer (13).

2. The pressure detection module (30) according to claim 1, characterized in that: The hardness of the first encapsulation layer (13) is greater than or equal to Shore A 10; and / or the hardness of the second encapsulation layer (14) is less than or equal to Shore A 5.

3. The pressure detection module (30) according to claim 1 or 2, characterized in that: The second encapsulation layer (14) covers the protruding portion (131), the second encapsulation layer (14) comprises an outer surface (141) arranged away from the first encapsulation layer (13), the outer surface (141) of the second encapsulation layer (14) covers the protruding portion (131), and the minimum spacing between the outer surface (141) and the protruding portion (131) is less than 0.5 millimeters.

4. The pressure detection module (30) according to claim 1 or 2, characterized in that: The second packaging layer (14) comprises an outer surface (141) disposed away from the first packaging layer (13), and the protrusion (131) comprises a contact surface (1311) disposed away from the pressure sensor (12), and the contact surface (1311) is flush with the outer surface (141) of the second packaging layer (14).

5. The pressure detection module (30) according to any one of claims 1 to 4, characterized in that: The pressure sensor (12) comprises a detection body (122) and an electrode (124), and the detection surface (121) is located on the detection body (122); The electrode (124) is located on a side of the detection body (122) facing away from the detection surface (121), and the electrode (124) is fixed to and electrically connected to the first circuit board (11); or, the electrode (124) and the detection surface (121) are located on the same side of the detection body (122), the electrode (124) is located around the detection surface (121), the electrode (124) is electrically connected to the first circuit board (11) via a bonding wire (16), and the first packaging layer (13) covers the bonding wire (16).

6. The pressure detection module (30) according to claim 5, characterized in that: The pressure sensor (12) has a detection cavity (123), the detection cavity (123) is located in the detection body (122), and the opening of the detection cavity (123) is arranged away from the detection surface (121); the first circuit board (11) is provided with a vent hole (111), and the vent hole (111) is connected to the detection cavity (123).

7. The pressure detection module (30) according to any one of claims 1 to 6, characterized in that: The number of the pressure sensors (12) is multiple; the multiple pressure sensors (12) are arranged in rows and spaced apart from each other; or the multiple pressure sensors (12) are distributed in an array; or the multiple pressure sensors (12) are arranged in multiple rows, and the pressure sensors (12) in two adjacent rows are staggered.

8. The pressure detection module (30) according to any one of claims 1 to 4, characterized in that: The pressure detection module (30) is further provided with an air vent (15), the air vent (15) being arranged staggered with respect to the pressure sensor (12), and the air vent (15) penetrating the first circuit board (11), the first packaging layer (13) and the second packaging layer (14).

9. The pressure detection module (30) according to any one of claims 1 to 8, characterized in that: The pressure detection module (30) further comprises a pressurizing component (2), wherein the pressurizing component (2) is located on a side of the first circuit board (11) facing away from the pressure sensor (12); The pressurizing component (2) comprises a fixed part (21) and a movable part (22); the movable part (22) is mounted on the fixed part (21); the pressurizing component (2) moves relative to the fixed part (21) along a first direction via the movable part (22), thereby pushing the first circuit board (11) and the pressure sensor (12) to move along the first direction, wherein the first direction is perpendicular to the surface of the first circuit board (11).

10. The pressure detection module (30) according to claim 9, characterized in that: The fixing member (21) has a first sleeve-fitting portion (211), and the movable member (22) has a second sleeve-fitting portion (221). The first sleeve-fitting portion (211) and the second sleeve-fitting portion (221) are sleeved and movably connected along the first direction.

11. The pressure detection module (30) according to claim 10, characterized in that: The first sleeve part (211) is sleeved inside the second sleeve part (221), one of the first sleeve part (211) and the second sleeve part (221) is provided with a guide groove, and the other is provided with a guide block, the guide block is slidably connected to the guide groove, and the sliding direction is parallel to the first direction.

12. The pressure detection module (30) according to claim 10, characterized in that: The pressurizing component (2) further comprises a rolling element (27), wherein the rolling element (27) is located between the first sleeve-fitting portion (211) and the second sleeve-fitting portion (221), and is in contact with the first sleeve-fitting portion (211) and the second sleeve-fitting portion (221); And / or, the pressurizing assembly (2) further comprises an elastic member (28), wherein the elastic member (28) elastically connects the first sleeve-fitting portion (211) and the second sleeve-fitting portion (221).

13. The pressure detection module (30) according to any one of claims 10 to 12, characterized in that: The fixing member (21) further comprises a fixing portion (212), wherein the fixing portion (212) is connected to one end of the first sleeve-fitting portion (211); the movable member (22) further comprises a pushing portion (222), wherein the pushing portion (222) is connected to one end of the second sleeve-fitting portion (221), and the pushing portion (222) is arranged opposite to the fixing portion (212); The pressurizing component (2) forms a driving air cavity (210) between the fixing portion (212) and the pushing portion (222), and the pushing portion (222) moves relative to the fixing portion (212) by inflating the driving air cavity (210).

14. The pressure detection module (30) according to claim 13, characterized in that: The pressurizing component (2) further comprises an airbag (26a), wherein the airbag (26a) is located between the fixing portion (212) and the pushing portion (222), and the driving air chamber (210) is located inside the airbag (26a).

15. The pressure detection module (30) according to claim 13, characterized in that: The pressurizing component (2) further comprises an elastic membrane (26b), wherein the elastic membrane (26b) is sealingly connected to the other end of the first sleeve portion (211); the driving air cavity (210) is surrounded by the fixed portion (212), the first sleeve portion (211) and the elastic membrane (26b); when the driving air cavity (210) is inflated, the elastic membrane (26b) protrudes in a direction away from the fixed portion (212), and the elastic membrane (26b) abuts against and pushes the pushing portion (222).

16. The pressure detection module (30) according to claim 13, characterized in that: The pressurizing component (2) further comprises a folding membrane (26c), wherein the folding membrane (26c) is sealingly connected to the other end of the first sleeve portion (211); the driving air cavity (210) is surrounded by the fixing portion (212), the first sleeve portion (211) and the folding membrane (26c); when the driving air cavity (210) is inflated, the folded portion of the folding membrane (26c) is opened, and the folding membrane (26c) abuts against and pushes the pushing portion (222).

17. The pressure detection module (30) according to claim 13, characterized in that: The pressurizing component (2) further comprises a sealing member (26d), wherein the sealing member (26d) seals and connects the first sleeve-fitting portion (211) and the second sleeve-fitting portion (221); the driving air cavity (210) is surrounded by the first sleeve-fitting portion (211), the second sleeve-fitting portion (221) and the sealing member (26d).

18. The pressure detection module (30) according to any one of claims 9 to 17, characterized in that: The pressurizing component (2) further comprises a sliding guide rail (23), wherein the sliding guide rail (23) is fixed to a side of the fixing part (21) facing away from the movable part (22), and the sliding guide rail (23) is used for wearing a wristband (20) of a wrist wearable device (100).

19. The pressure detection module (30) according to claim 18, characterized in that: The pressure detection module (30) further comprises a clamp (24), wherein the clamp (24) is fixedly connected to the fixing member (21), and the clamp (24) is used for being detachably connected to the wristband (20) of the wrist wearable device (100).

20. The pressure detection module (30) according to any one of claims 9 to 19, characterized in that: The pressure detection module (30) further comprises a conditioning circuit component (3), wherein the conditioning circuit component (3) is mounted on a side of the pressurizing component (2) facing away from the first circuit board (11); The conditioning circuit assembly (3) comprises a second circuit board (34) and a chip (35), wherein the chip (35) is fixed to and electrically connected to the second circuit board (34), and the second circuit board (34) is electrically connected to the first circuit board (11).

21. The pressure detection module (30) according to claim 13, characterized in that: The fixing member (21) is provided with an air inlet nozzle (25), and the air inlet nozzle (25) is connected to the driving air cavity (210); The pressure detection module (30) further comprises a conditioning circuit component (3), wherein the conditioning circuit component (3) is mounted on a side of the pressurizing component (2) facing away from the first circuit board (11); The conditioning circuit assembly (3) comprises a second circuit board (34) and a chip (35), wherein the chip (35) is fixed to and electrically connected to the second circuit board (34), and the second circuit board (34) is electrically connected to the first circuit board (11); The conditioning circuit assembly (3) further comprises an air inlet pipe (36), wherein the air inlet pipe (36) is in communication with the air inlet nozzle (25).

22. The pressure detection module (30) according to claim 20 or 21, characterized in that: The conditioning circuit assembly (3) further comprises a fixed shell (31) and a display screen (33); the bottom of the fixed shell (31) is fixed to the pressurizing assembly (2), the second circuit board (34) is installed on the inner side of the fixed shell (31), and the display screen (33) is installed on the top of the fixed shell (31).

23. The pressure detection module (30) according to any one of claims 20 to 22, characterized in that: The conditioning circuit assembly (3) further comprises a conditioning wire (39) and a wire protection shell (310); The conditioning wire (39) electrically connects the second circuit board (34) and the first circuit board (11), and the conditioning wire (39) is a stretchable wire; The wire protection shell (310) comprises a first sub-shell (3101) and a second sub-shell (3102); the first sub-shell (3101) is fixed to the fixed part (21); the second sub-shell (3102) is fixed to the movable part (22); the first sub-shell (3101) and the second sub-shell (3102) are movably connected to form a telescopic cavity; the conditioning wire (39) is at least partially located in the telescopic cavity.

24. A wrist wearable device (100), characterized in that: The wrist wearable device (100) comprises: Device body (10); A wristband (20) connected to the device body (10); and The pressure detection module (30) according to any one of claims 1 to 23, wherein the pressure detection module (30) is installed on the wristband (20), and the pressure sensor (12) of the pressure detection module (30) is located on the inner side of the wristband (20).

25. The wrist wearable device (100) according to claim 24, characterized in that: The pressure detection module (30) is movably connected to the wristband (20).

26. The wrist wearable device (100) according to claim 25, characterized in that: The wrist-type wearable device (100) further comprises a connection circuit module (40); the connection circuit module (40) is installed on the outside of the wristband (20), and the two ends thereof are respectively connected to the device body (10) and the pressure detection module (30); the connection circuit module (40) is stretchable.

27. The wrist wearable device (100) according to claim 26, characterized in that: The connecting line module (40) comprises a base (401) and a connecting wire (402); the base (401) is made of a flexible material or an elastic material, the connecting wire (402) is arranged in the base (401), the connecting wire (402) electrically connects the main body and the pressure detection module (30), and the connecting wire (402) is arranged in the base (401) in a wavy or spiral shape.

28. The wrist wearable device (100) according to claim 27, characterized in that: The connection line module (40) further comprises an air duct (403), wherein the air duct (403) is arranged on the base (401) in a wave shape or a spiral shape, and the air duct (403) connects the device body (10) and the pressure detection module (30).

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