Button module and electronic device

Abstract

The present application provides a button module and an electronic device. The button module comprises a cover plate, a first detection assembly, and a second detection assembly, wherein the cover plate comprises a first region for arranging the first detection assembly and a second region for arranging the second detection assembly, the first detection assembly is an optical heart rate detection module or an electrocardiogram detection module, and the second detection assembly is one or more of a camera, an ambient light sensor, a fingerprint detection module, an infrared emitter, a distance sensor, and a body fat detection module. The button module is used for detecting a user operation on the button module. By integrating the first detection assembly and the second detection assembly on the button module, the functions of the button module can be further expanded, facilitating multifunctionalization of the electronic device.

Description

Key module and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410396426.7, filed on April 1, 2024, entitled "Key module and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic devices, and in particular to a key module and an electronic device. BACKGROUND

[0003] In today's society, people have increasingly high demands for the functions of electronic devices, and users hope to integrate more health monitoring functions, environmental monitoring functions, and interactive functions on small electronic devices. For example, users hope that electronic devices can not only detect multiple indicators such as blood oxygen, electrocardiogram, heart rate, blood pressure, blood fat, blood sugar, body fat, and ultraviolet rays, but also can perform comprehensive analysis according to some of the indicators to form a micro physical examination mode or a stress detection mode, thereby facilitating users to monitor their own physical health. The interactive function is more convenient for users to operate the electronic device. Therefore, how to make the electronic device realize multifunctionalization while realizing miniaturization and portability has become the development trend of the industry. SUMMARY

[0004] The present application provides a key module and an electronic device.

[0005] In a first aspect, the present application provides a key module. The key module includes a cover plate, a first detection assembly, and a second detection assembly. The cover plate includes a first region for arranging the first detection assembly and a second region for arranging the second detection assembly. The first detection assembly is an optical heart rate detection module or an electrocardiogram detection module. The second detection assembly is one or more of a camera, an ambient light sensor, a fingerprint detection module, an infrared emitter, a distance sensor, and a body fat detection module. The key module is used to detect user operations on the key module.

[0006] It can be understood that by integrating the first detection assembly and the second detection assembly on the key module, the first detection assembly can be used to detect the heart rate or electrocardiogram of the user, which can reflect the physiological indicators of the user's physical health. The second detection assembly is one or more of a camera, an ambient light sensor, a fingerprint detection module, an infrared emitter, a distance sensor, and a body fat detection module. The number and type of the second assembly are selected according to the requirements, and are integrated on the key module, which can further increase the functions of the key module and facilitate the multifunctionalization of the key module.

[0007] And, through the combination of the first detection assembly and the second detection assembly, the key module can not only have the functions that can be realized by the first detection assembly or the second detection assembly alone, but also can realize the functions of multiple devices in combination through the cooperation of the first detection assembly and the second detection assembly, which is conducive to the multifunctionalization of the key module and can improve the user experience.

[0008] The user can also operate the electronic device by touching or pressing the key module to realize interaction with the electronic device. For example, the key module can recognize the gestures of the user, and the user can operate the electronic device through different gestures to realize interaction with the electronic device.

[0009] In an embodiment, the key module is arranged on the side surface of the electronic device.

[0010] It can be understood that the key module is installed on the side surface of the electronic device, which is convenient for the user to touch or press. Compared with the scheme that the key module is installed on the screen, the key module is installed on the side surface of the electronic device without occupying the display area of the screen, which is conducive to increasing the display area of the electronic device.

[0011] In an embodiment, the first detection assembly is an optical heart rate detection module, and the optical heart rate detection module includes a light receiver and a light emitter arranged at intervals. The first area is a light transmission area for transmitting light emitted by the light emitter, and the light receiver is used to receive the light transmitted through the light transmission area.

[0012] It can be understood that the side surface of the electronic device can surround the front surface of the electronic device (the surface facing the user when the electronic device is normally used). For electronic devices such as smart watches or smart bands that have a display screen, the front surface is the surface where the screen is located, and the side surface of the electronic device can surround the screen. For electronic devices without a screen, the front surface can be the main user interface of the electronic device, and the side surface of the electronic device can surround the main user interface.

[0013] The key module is installed on the side surface of the electronic device, which is convenient for the user to touch or press. Compared with the scheme that the key module is installed on the screen, the key module is installed on the side surface of the electronic device without occupying the display area of the screen, which is conducive to increasing the display area of the electronic device.

[0014] In an embodiment, the key module further includes a light shielding structure between the light emitter and the light receiver.

[0015] It can be understood that the light shielding structure can be used to block the light emitted by the light emitter from directly entering the light receiver below the top surface of the cover plate, thereby interfering with the light receiver receiving the light reflected or scattered by the user's tissue. In other words, the light shielding structure can be used to make the light received by the light receiver come from the user's tissue reflection or scattering as much as possible, thereby improving the detection accuracy of the optical heart rate detection module.

[0016] In an embodiment, the key module further comprises a Fresnel film, the Fresnel film is arranged between the light emitter and the first area.

[0017] It can be understood that the Fresnel film can be used to shield other structures near the light emitter, so that the user cannot see the other structures from the outside of the cover plate, thereby enhancing the appearance experience of the product. The Fresnel film can also make the light emitted by the light emitter transparent, and can make the light more concentrated or reduce scattering, thereby enhancing the brightness of the light emitter.

[0018] In an embodiment, the key module further comprises a bracket and a circuit board, the cover plate is arranged on a first surface of the bracket, the circuit board is arranged on a second surface of the bracket, and the first surface and the second surface are arranged opposite to each other.

[0019] It can be understood that the bracket can support a space between the cover plate and the circuit board for placing the optical heart rate detection module and the ambient light sensor. It can be understood that the cover plate, the bracket and the circuit board can be used to protect the devices located in the space.

[0020] In an embodiment, the first detection assembly is an optical heart rate detection module, the optical heart rate detection module comprises a light receiver and a light emitter arranged at intervals, and the light receiver and the light emitter are located between the cover plate and the circuit board.

[0021] It can be understood that the cover plate, the bracket and the circuit board can protect the light receiver and the light emitter and have a dustproof effect.

[0022] In an embodiment, the second detection assembly is located between the cover plate and the circuit board. The key module further comprises a light-transmitting piece, the light-transmitting piece is used to fill the accommodating space formed by the circuit board, the bracket and the cover plate, and the light-transmitting piece is connected to the first detection assembly, the second detection assembly and the circuit board.

[0023] It can be understood that by arranging the light-transmitting piece, the first detection assembly and the second detection assembly can be protected and dustproof and waterproof. Moreover, the light-transmitting piece will not interfere with the first detection assembly or the second detection assembly emitting and receiving light.

[0024] In an embodiment, the bracket comprises a side wall and a baffle, the side wall is annular, the side wall, the circuit board and the cover plate enclose a containing space, the baffle connects the inner side of the side wall, the cover plate and the circuit board, the baffle and the first area, the circuit board enclose a first containing space, the baffle and the second area, the circuit board enclose a second containing space. The first detection assembly is arranged in the first containing space, and the second detection assembly is arranged in the second containing space.

[0025] It can be understood that the containing space is divided into a first space and a second space by the baffle, the first detection assembly is arranged in the first space, and the second detection assembly is arranged in the second space. In this way, when one of the first space and the second space is filled with water, causing the device to malfunction, the baffle can be used to block the spread of water vapor towards the other space, and the device in the other space can still be protected, and the key module can still retain part of the function.

[0026] In an embodiment, the circuit board comprises a first part and a second part, the first part and the second part are arranged along the length direction of the cover plate, and the first part and the second part are arranged at an included angle. The first detection assembly is arranged in the first part, and the second detection assembly is arranged in the second part.

[0027] It can be understood that when the side surface of the electronic device is an arc surface, the circuit board is divided into a first part and a second part arranged at an included angle, and when the key module is installed on the side surface, the circuit board can better match the shape of the side surface, avoiding the waste of the space of the electronic device.

[0028] In an embodiment, the first area and the second area are arranged along the length direction of the cover plate.

[0029] It can be understood that when the key module is installed on the side surface of the electronic device, the first direction can be arranged substantially parallel to the screen. Compared with the screen on which the first direction is perpendicular to the screen, the arrangement direction of the first area and the second area of the embodiment is parallel to the screen, and the thickness requirement of the electronic device is smaller, and the key module can meet the thinning requirement of the electronic device.

[0030] In an embodiment, the key module further comprises a pressure sensing circuit and a pressure sensing assembly, the pressure sensing assembly is arranged on the inner side of the cover plate, and the pressure sensing circuit is fixed to the pressure sensing assembly. When the cover plate is subjected to pressure and the pressure sensing assembly deforms, the pressure sensing circuit is used to detect the deformation of the pressure sensing assembly.

[0031] It can be understood that the resistance value of the pressure sensing circuit can change according to the deformation degree of the pressure sensing assembly. The electronic device can be provided with a pressure sensing chip. The pressure sensing chip can be mounted on the mainboard and electrically connected to the mainboard. The pressure sensing chip can be electrically connected to the pressure sensing circuit. The electronic device can provide a current with a fixed voltage value to the pressure sensing circuit, and when the resistance value of the pressure sensing circuit changes, the current on the pressure sensing circuit will also change. The pressure sensing chip can determine the size of the current to determine the size of the force applied by the user to the shell.

[0032] When the force between the user's finger and the cover plate is small, the light emitted by the light emitter penetrates the tissue under the user's skin to a limited depth, and the user's blood vessels are at a certain depth from the user's skin surface. Generally, the greater the force value applied by the user to the cover plate, the better the fit between the user's finger and the cover plate, and the deeper the light emitted by the light emitter penetrates the user's skin. Therefore, when the key module 100 is used to measure the PPG signal, a first threshold value can be set. When the force between the user's finger and the cover plate is greater than or equal to the first threshold value, the light emitted by the light emitter penetrates the user's skin to a greater depth, and most of the light can be emitted to the position of the blood vessels under the user's skin. When the pressure sensing chip detects that the real-time force detected by the pressure sensing assembly is greater than or equal to the first threshold value, the pressure sensing chip controls the key module 100 to start collecting the PPG signal of the user, so that the collected PPG signal has better accuracy.

[0033] In an embodiment, the first detection assembly is an electrocardio detection module, and the electrocardio detection module includes a first electrode, and the first electrode is at least partially disposed on an outer surface of the first area.

[0034] It can be understood that the outer surface of the first area is a part of the top surface of the cover plate, and when the user performs electrocardio detection, the user's finger can contact the top surface of the cover plate and contact the first electrode to achieve electrical connection of the first electrode, so that the first electrode can collect the electrical signal of the user.

[0035] In an embodiment, the key module further includes a third detection assembly, and the cover plate further includes a third area for arranging the third detection assembly.

[0036] It can be understood that the key module can further include more detection assemblies, and the key module can have more functions, which is conducive to the multifunctionalization of the key module.

[0037] In an embodiment, the first detection assembly is an optical heart rate detection module, and the third detection assembly is an electrocardio detection module, and the electrocardio detection module includes a first electrode, and the first electrode is at least partially disposed on an outer surface of the third area.

[0038] It can be understood that when the finger of the user contacts the top surface of the cover plate, the key module can measure the electrocardio signal and the PPG signal of the user at the same time. The PPG signal (one of the heart rate signals) can also be combined with the electrocardio waveform to determine more accurate blood pressure and other biological feature information of the user's cardiovascular system through an algorithm. The key module can collect the ECG waveform and the PPG signal of the user at the same time, calculate the time difference PPT between the two through an algorithm, and then obtain the blood pressure data of the user through a formula conversion.

[0039] In an embodiment, the key module further comprises a bracket and a circuit board, the cover plate is arranged on a first surface of the bracket, and the circuit board is arranged on a second surface of the bracket, the first surface and the second surface being arranged opposite to each other. The electrocardio detection module further comprises a conductive piece, the conductive piece being arranged between the cover plate and the circuit board and electrically connected between the first electrode and the circuit board.

[0040] It can be understood that the conductive piece can transmit the electrical signal collected by the first electrode to the circuit board.

[0041] In an embodiment, the second detection assembly is a body fat detection module, and the body fat detection module comprises a second electrode arranged on the outer surface of the second area. An insulating structure is arranged between the first electrode and the second electrode.

[0042] It can be understood that the insulating structure made of an insulating material is arranged between the first electrode and the second electrode to insulate the first electrode from the second electrode. The first electrode of the electrocardio detection module can also participate in the body fat detection as an electrode for body fat detection, that is, the electrocardio detection module and the body fat detection module can share the first electrode. One electrode for body fat detection can be arranged, and the area requirement of the cover plate is small, which is beneficial to reduce the area of the cover plate and the miniaturization of the key module.

[0043] When the user wears the electronic device to measure the body fat, one finger contacts the second area and the third area at the same time, and the back surface of the electronic device can further be provided with a reference electrode, the reference electrode contacts the skin of the wrist of the user, and the first electrode, the second electrode and the reference electrode can all be electrically connected to the body fat chip, and the body fat chip obtains the body fat data of the user according to the electrical signals collected by the three electrodes.

[0044] In a second aspect, an embodiment of the present application provides an electronic device. The electronic device comprises a shell and a key module, and the key module is mounted on the shell.

[0045] It can be understood that when the key module is mounted on the electronic device, it is beneficial to the miniaturization of the electronic device. The key module occupies a smaller surface of the electronic device, which is beneficial to saving the stacking space of the whole machine, and more other functional devices can be arranged on the surface of the electronic device, so as to meet the diversified needs of users.

[0046] In an embodiment, the electronic device is a watch or a bracelet.

[0047] It can be understood that the watch or the bracelet can integrate more functions on the key module in a small volume, which is conducive to the multifunctionalization of the watch or the bracelet.

[0048] In an embodiment, the electronic device further comprises a screen, the shell comprises a middle frame and a back cover, the middle frame is connected between the screen and the back cover, and the key module is mounted on an outer surface of the middle frame.

[0049] It can be understood that the outer surface of the middle frame refers to a surface of the middle frame away from the internal space of the electronic device, that is, the side surface of the electronic device. Mounting the key module 100 on the side surface of the electronic device facilitates the user to touch or press. Compared with the scheme of mounting the key module 100 on the screen, mounting the key module 100 on the side surface of the electronic device does not need to occupy the display area of the screen, which is conducive to increasing the display area of the electronic device.

[0050] In an embodiment, the electronic device further comprises a motor, the motor is arranged in the shell, and the motor vibrates according to the data detected by the key module.

[0051] It can be understood that the whole machine algorithm sets a corresponding threshold. When the user presses the cover plate with a finger, the resistance value of the pressure sensing circuit changes, an electric signal is generated, and the pressure sensing chip inside the whole machine calculates. The pressure sensing chip can be electrically connected to the motor to control the motor to generate a vibration feeling, achieving a function similar to a virtual button. When the key module is used as a key of the electronic device, the motor can vibrate to prompt the user whether the operation on the key is effective.

[0052] In an embodiment, the motor can be mounted on the back cover.

[0053] It can be understood that when the user wears the electronic device, the back cover is in close contact with the skin of the user's wrist, and the vibration of the motor can be better perceived by the user through the back cover. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments of the present application will be described below.

[0055] FIG. 1 is a schematic diagram of an embodiment of an electronic device provided by the present application;

[0056] FIG. 2 is an exploded schematic diagram of an embodiment of a watch body shown in FIG. 1;

[0057] FIG. 3 is a partial cross-sectional view of an embodiment of the electronic device shown in FIG. 1 at a cross-sectional line A-A;

[0058] FIG. 4 is a structural schematic diagram of an embodiment of the key module shown in FIG. 3;

[0059] FIG. 5 is an exploded schematic diagram of an embodiment of the key module shown in FIG. 4;

[0060] FIG. 6 is a sectional view of an embodiment of the key module shown in FIG. 4 at section line B-B;

[0061] FIG. 7 is a schematic diagram of an embodiment of the cover plate shown in FIG. 6 at another angle;

[0062] FIG. 8 is an assembly schematic diagram of an embodiment of the light emitter, light collector, ambient light sensor, and circuit board shown in FIG. 6;

[0063] FIG. 9 is a structural schematic diagram of an embodiment of the bracket shown in FIG. 5;

[0064] FIG. 10 is a structural schematic of the bracket shown in FIG. 8 at another angle;

[0065] FIG. 11 is a partial sectional view of an embodiment of the electronic device shown in FIG. 1 at section line C-C;

[0066] FIG. 12 is an exploded schematic diagram of another embodiment of the key module shown in FIG. 4;

[0067] FIG. 13 is a structural schematic diagram of an embodiment of the key module shown in FIG. 4 at section line D-D;

[0068] FIG. 14 is a partial structural schematic diagram of another embodiment of the key module shown in FIG. 4 at another angle;

[0069] FIG. 15 is a partial structural schematic diagram of another embodiment of the key module shown in FIG. 4 at another angle;

[0070] FIG. 16 is a structural schematic diagram of another embodiment of the table body shown in FIG. 1;

[0071] FIG. 17 is a structural schematic diagram of another embodiment of the table body shown in FIG. 1;

[0072] FIG. 18 is a structural schematic diagram of another embodiment of the table body shown in FIG. 1. DETAILED DESCRIPTION

[0073] The embodiments of the present application are described below with reference to the accompanying drawings. The embodiments described herein are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0074] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. It should be understood that in the present application, "electrical connection" can be understood as physical contact and electrical conduction of elements; or can be understood as the form of connection between different elements in the circuit structure through the entity circuit of the copper foil or wire of the printed circuit board (PCB) which can transmit electrical signals. "Connecting", "connected" can refer to a mechanical connection relationship or a physical connection relationship, for example, A and B are connected or A and B are connected, which can mean that there is a fastening component (such as a screw, a bolt, a rivet, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to be separated.

[0075] Furthermore, "fixed" in this paper should also be understood in a broad sense, for example, "fixed" can be direct fixing, or can be indirect fixing through intermediate medium. Wherein, "fixed" means connected to each other and the relative position relationship after connection is unchanged. The orientation language mentioned in the embodiments of the present application, for example, "upper", "lower" and the like, is only the direction of the drawing, therefore, the orientation language used is for better and clearer description and understanding of the embodiments of the present application, and is not indicative or implied that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application. "Multiple" means two or more than two.

[0076] In the embodiments of the present application, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0077] In the embodiments of the present application, the mathematical concepts mentioned, parallel, perpendicular, etc. These limitations are all for the current process level, and are not strictly defined in the mathematical sense, and a small amount of deviation is allowed, approximately parallel, approximately perpendicular, etc. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B can be between 0 degrees and 100 degrees.

[0078] In the description of the embodiments of the present application, unless otherwise specified, "and / or" only means a relationship between associated objects, which means that there can be three relationships. For example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone.

[0079] It can be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that, for the convenience of description, only some parts related to the present application are shown in the drawings.

[0080] FIG. 1 is a schematic diagram of an embodiment of an electronic device 1000 provided by the present application.

[0081] The electronic device 1000 can include, but is not limited to, a smart watch, a sports watch, a bracelet, augmented reality (AR) glasses, virtual reality (VR) glasses or earphones, and the like wearable devices. The electronic device 1000 can also be a terminal product such as a mobile phone, a tablet or a home device. The electronic device 1000 shown in FIG. 1 is described by taking a smart watch as an example. It should be noted that FIG. 1 only schematically shows some components included in the electronic device 1000, and the actual size, actual position and actual structure of these components are not limited by the figure. The following figures also only schematically show some components, and the actual size, actual position and actual structure of these components are also not limited by the following figures. Details will not be described below.

[0082] As shown in FIG. 1, the electronic device 1000 can include a watch body 1001 and a watchband 1002. The watchband 1002 is connected to the watch body 1001. Exemplarily, the number of watchbands 1002 can be two. The two watchbands 1002 are respectively connected to two ends of the watch body 1001. When a user wears the electronic device 1000, the watchband 1002 can be used to fix the watch body 1001 on the user's body. In other embodiments, the number of watchbands 1002 can also be one.

[0083] FIG. 2 is an exploded schematic diagram of an embodiment of the watch body 1001 shown in FIG. 1.

[0084] As shown in FIGS. 1 and 2, the watch body 1001 can include a key module 100, a screen 200 and a shell 300. The key module 100 can be mounted on the shell 300. The key module 100 can be used to detect user operations on the key module 100.

[0085] In some embodiments, the screen 200 can be used to display images, etc. The screen 200 can be a flat screen or a curved screen. The display screen of the screen 200 can be an organic light-emitting diode (OLED) display screen, or an active-matrix organic light-emitting diode (AMOLED) display screen, or a liquid crystal display (LCD), etc.

[0086] Exemplarily, the shell 300 can include a middle frame 310 and a back cover 320. The screen 200 is arranged opposite to the back cover 320, and the middle frame 310 is connected between the screen 200 and the back cover 320. The screen 200, the middle frame 310 and the back cover 320 jointly enclose an internal space 1003 of the electronic device 1000. The internal space 1003 of the electronic device 1000 can be used to place devices of the electronic device 1000, such as a mainboard, a battery, a speaker or a microphone, etc. In other embodiments, the middle frame 310 and the back cover 320 can also be an integrated structure. When the user wears the electronic device 1000, the screen 200 is located on a side of the watch body 1001 facing away from the skin of the wrist of the user, and the back cover 320 is located on a side of the watch body 1001 facing the skin of the wrist of the user, and the back cover 320 can contact the skin of the wrist of the user.

[0087] In other embodiments, when the electronic device 1000 does not arrange the screen 200, the shell 300 can further include a front cover, which is arranged opposite to the back cover 320, and the middle frame 310 is connected between the front cover and the back cover 320. The front cover, the middle frame 310 and the back cover 320 jointly enclose the internal space 1003 of the electronic device 1000.

[0088] FIG. 3 is a partial cross-sectional view of an embodiment of the electronic device 1000 at the cross-sectional line A-A shown in FIG. 1.

[0089] As shown in FIGS. 1 and 3, the key module 100 can be arranged on a side 1004 of the electronic device 1000. The side 1004 of the electronic device 1000 can surround a front side of the electronic device 1000 (a side of the electronic device 1000 facing the user when the electronic device 1000 is normally used). For the electronic device 1000 with a display screen, such as a smart watch or a smart bracelet, the front side is a side on which the screen 200 is located, and the side 1004 of the electronic device 1000 can surround the screen 200. For the electronic device 1000 without the screen 200, the front side can be a main user interface of the electronic device 1000, and the side 1004 of the electronic device 1000 can surround the main user interface.

[0090] Exemplarily, when the shell 300 comprises the middle frame 310 and the back cover 320, the key module 100 can be mounted on the middle frame 310 and exposed relative to the outer surface 3101 of the middle frame 310. The outer surface 3101 of the middle frame 310 refers to the surface of the middle frame 310 away from the internal space 1003 of the electronic device 1000, that is, the side surface 1004 of the electronic device 1000. It can be understood that mounting the key module 100 on the side surface 1004 of the electronic device 1000 facilitates the user to touch or press. Compared with the scheme of mounting the key module 100 on the screen 200, mounting the key module 100 on the side surface 1004 of the electronic device 1000 does not need to occupy the display area of the screen 200, which is beneficial to increase the display area of the electronic device 1000.

[0091] In some embodiments, when the electronic device 1000 is not provided with the screen 200, the key module 100 can be mounted on the front surface of the electronic device 1000.

[0092] The key module 100 is used to detect the user operation on the key module 100. For example, the user can also operate the electronic device 1000 by touching or pressing the key module 100 to realize the interaction with the electronic device 1000. For another example, the key module 100 can recognize the user's gestures, and the user can operate the electronic device 1000 through different gestures to realize the interaction with the electronic device 1000.

[0093] In some embodiments, the key module 100 can be a touch key. When realizing the key function, the key module 100 does not need to move relative to the middle frame 310, and the user only needs to touch the key module 100 to realize the key function. In other embodiments, the key module 100 can also be a key with a stroke. When realizing the key function, the user needs to press the key module 100 to make the key module 100 move relative to the middle frame 310 to produce a certain displacement, so as to realize the key function.

[0094] In some embodiments, the key module 100 can be used to detect the user's health parameter index. In this way, the user can monitor his own health status at any time. Exemplarily, the key module 100 can be used to measure the user's physiological health parameters such as blood pressure, electrocardio, heart rate, blood oxygen, blood fat, blood sugar, etc. It can be understood that integrating the health monitoring function of the electronic device 1000 on the key module 100 can make the key module 100 have more functions, and at the same time, the space for additionally setting the health detection device can be saved, which is beneficial to the miniaturization of the electronic device 1000 while realizing the multifunctionalization.

[0095] In some embodiments, the key module 100 can also be electrically connected to the circuit inside the electronic device 1000. For example, when the electronic device 1000 includes a main board and a sub-board, the key module 100 can be electrically connected to the main board and / or the sub-board to realize signal transmission. When the electronic device 1000 only includes a main board, the key module 100 can be electrically connected to the main board.

[0096] In some embodiments, the electronic device 1000 can also include a processor (not shown in the figure), which can be fixed on the main board and electrically connected to the main board. The key module 100 can be electrically connected to the processor. The signals collected by the key module 100 can be transmitted to the processor through the main board.

[0097] In some embodiments, the processor can be used to analyze the health parameters of multiple users detected by the key module 100 to determine whether the current physical state of the user is healthy. If the analysis result is that the user is currently in a sub-healthy state, the processor can also give adjustment suggestions to the user's life and work, eating habits, etc. according to the analysis result. In some embodiments, the processor can also be used to analyze the current psychological state of the user according to the parameters detected by the key module 100 to determine whether the user has psychological health problems such as depression.

[0098] As shown in FIG. 1, the key module 100 can be arranged on the left side or the right side of the middle frame 310. When the user wears the electronic device 1000, the cover plate 10 of the key module 100 can face the ground or face away from the ground in the state that the arm naturally droops. When the electronic device 1000 is a watch or a bracelet, the watchband 1002 can be connected to the upper and lower parts of the middle frame 310. When the user wears the electronic device 1000, the watchband 1002 surrounds the user's wrist to realize the wearing of the electronic device 1000. It can be understood that compared with the upper or lower part of the middle frame 310, the left or right side of the middle frame 310 has a larger space, which can be used to arrange the key module 100.

[0099] As shown in FIG. 3, the key module 100 can include a cover plate 10, a first detection assembly 20 and a second detection assembly 30. For ease of description, the width direction of the key module 100 is defined as the X-axis. The length direction of the key module 100 is the Y-axis. The thickness direction of the key module 100 is the Z-axis. It can be understood that the coordinate system setting can be flexibly set according to specific actual needs. It can be understood that the coordinate system direction here is applicable to all embodiments of the present application.

[0100] The cover plate 10 can be used as a working panel of the key module 100. For example, the cover plate 10 can include a top surface 101, a bottom surface 102, and a side surface 103. The top surface 101 and the bottom surface 102 are arranged opposite to each other, and the side surface 103 is connected between the top surface 101 and the bottom surface 102. In other words, the top surface 101, the side surface 103, and the bottom surface 102 of the cover plate 10 can be arranged in sequence from top to bottom along the Z-axis direction.

[0101] When the key module 100 is installed on the middle frame 310, the top surface 101 of the cover plate 10 can be exposed to the middle frame 310. When the key module 100 is working, a user can touch the top surface 101 of the cover plate 10 to perform a user operation. The implementation manner of the user performing the user operation by touching the top surface 101 of the cover plate 10 will be described below.

[0102] For example, the cover plate 10 can be made of glass, plastic, or other materials as a whole, or the cover plate 10 can be formed by assembling multiple structural parts made of multiple materials by gluing or other methods.

[0103] The cover plate 10 includes a first area 1 for arranging the first detection assembly 20 and a second area 2 for arranging the second detection assembly 30.

[0104] In some embodiments, the first area 1 and the second area 2 can be arranged along a first direction. The first direction can be parallel to the length direction of the cover plate 10. When the key module 100 is installed on the side surface 1004 of the electronic device 1000, the first direction can be substantially parallel to the screen 200. It can be understood that, compared with the first direction being perpendicular to the screen 200 on which the screen 200 is located, the arrangement direction of the first area 1 and the second area 2 in the embodiment is parallel to the screen 200, which has a smaller requirement on the thickness of the electronic device 1000, and the key module 100 can meet the thinning requirement of the electronic device 1000.

[0105] It can be understood that the first area 1 and the second area 2 can be directly connected or arranged with a spacing. For example, the cover plate 10 can further include a connecting area 3 (the first area 1, the second area 2, and the connecting area 3 are distinguished by dashed lines and filled patterns in FIG. 7) connected between the first area 1 and the second area 2.

[0106] For example, the first detection assembly 20 can be an optical heart rate detection module 21 or an electrocardiogram detection module. The second detection assembly 30 is one or more of an ambient light sensor 31, a camera, a fingerprint detection module, an infrared emitter, a distance sensor, and a body fat detection module.

[0107] It can be understood that by integrating the first detection assembly 20 and the second detection assembly 30 on the key module 100, the first detection assembly 20 can be used to detect the heart rate or electrocardiogram of the user, which can reflect the physiological indicators of the user's physical health. The second detection assembly 30 is one or more of a camera, an ambient light sensor 31, a fingerprint detection module, an infrared emitter, a distance sensor, and a body fat detection module. The number and type of the second assembly are selected according to the needs. By integrating the second assembly on the key module 100, the functionality of the key module 100 can be further increased, which is conducive to the multifunctionalization of the key module 100.

[0108] Moreover, by the combination of the first detection assembly 20 and the second detection assembly 30, the key module 100 not only has the functions that can be achieved by using a single device of the first detection assembly 20 or the second detection assembly 30, but also can achieve the functions of multiple devices by the cooperation of the first detection assembly 20 and the second detection assembly 30, which is conducive to the multifunctionalization of the key module 100 and can improve the user experience. In the following, several functions that cannot be achieved by a single first detection assembly 20 or a single second detection assembly 30 will be specifically introduced.

[0109] Exemplarily, the first region 1 can include an inner surface 1a and an outer surface 1b arranged opposite to each other. It can be understood that the inner surface 1a of the first region 1 is a part of the bottom surface of the cover plate 10. The outer surface 1b of the first region 1 is a part of the top surface 101 of the cover plate 10. The outer surface 1b of the first region 1 and the inner surface 1a of the first region 1 can be arranged in sequence from top to bottom along the Z-axis direction.

[0110] The second region 2 can include an inner surface 2a and an outer surface 2b arranged opposite to each other. It can be understood that the inner surface 2a of the second region 2 is a part of the bottom surface of the cover plate 10. The outer surface 2b of the second region 2 is a part of the top surface 101 of the cover plate 10. The outer surface 2b of the second region 2 and the inner surface 2a of the second region 2 can be arranged in sequence from top to bottom along the Z-axis direction.

[0111] FIG. 4 is a structural schematic diagram of an embodiment of the key module 100 shown in FIG. 3. FIG. 5 is an exploded schematic diagram of an embodiment of the key module 100 shown in FIG. 4. FIG. 6 is a sectional view of an embodiment of the key module 100 shown in FIG. 4 at the section line B-B. Exemplarily, the embodiment shown in FIG. 5 takes the first detection assembly 20 as an optical heart rate detection module 21 and the second detection assembly 30 as an ambient light sensor 31.

[0112] As shown in FIGS. 4-6, the optical heart rate detection module 21 can include a light emitter 211 and a light receiver 212. The light emitter 211 and the light receiver 212 are arranged at intervals in the first area 1. The light emitter 211 can be used to emit light. The light receiver 212 is used to receive light and convert the light signal into an electrical signal. It can be understood that the light emitter 211 and the light receiver 212 shown in FIGS. 5 and 6 are only schematic representations, and in other embodiments, the positions of the light emitter 211 and the light receiver 212 can also be interchanged.

[0113] In some embodiments, the light emitter 211 can include one light source or multiple light sources. When the light emitter 211 includes multiple light sources, the wavelengths of the light emitted by these light sources can be different from each other, or in other words, the wavelengths of these light sources are different from each other. Illustratively, the wavelengths of the multiple light sources can include near-infrared light band, red light band, blue light band, yellow light band, green light band, etc.

[0114] Illustratively, the light emitter 211 and the light receiver 212 can be arranged at intervals on one side of the inner surface 1a of the first area 1. The first area 1 is a light transmission area, which is used to transmit the light emitted by the light emitter 211, and the light receiver 212 is used to receive the light transmitted through the light transmission area.

[0115] It can be understood that the outer surface 1b of the first area 1 can be used as a contact surface when detecting the heart rate signal of the user. The first area 1 of the cover plate 10 can be used to protect the light emitter 211 and the light receiver 212.

[0116] Illustratively, the optical heart rate detection module 21 can detect blood flow information. The blood flow generally refers to the flow of blood in the blood vessels in the body, which is a basic parameter of the blood circulation system, reflecting the process of blood flowing through arteries, capillaries, and veins under the action of the heart pump. Blood flow can be characterized by a variety of parameters, including but not limited to velocity, flow rate, direction, stability (whether the blood flow in the circulation system is stable), resistance (the resistance of blood flow to the blood vessel wall), pulsatility (the fluctuation of blood flow during the heart beat), distribution (the distribution of blood flow in the body), etc. By measuring and analyzing these blood flow information, the function of the heart and blood vessel system can be evaluated, cardiovascular diseases can be diagnosed, and effective treatment plans can be developed.

[0117] Blood flow information and other physiological characteristics such as heart rate, blood oxygen, and respiration are interrelated and influence each other. In physiological characteristic detection, comprehensive consideration of these information helps to more accurately understand the physiological state and health condition of the body.

[0118] As shown in FIG. 6, the key module 100 can be used to measure physiological health parameters of a user, such as heart rate, blood oxygen, respiration, etc. by disposing the optical heart rate detection module 21. For example, when the user uses the key module 100 to measure the heart rate, the user can place a finger on the outer surface 1b of the first area 1, the user's finger can cover the outer surface 1b of the first area 1, and the light emitted by the light emitter 211 can be irradiated onto the user's finger through the first area 1. Then the light can be reflected or scattered by the blood vessels in the user's finger, received by the light receiver 212 through the first area 1, and converted into an electrical signal by the light receiver 212.

[0119] In some embodiments, the key module 100 can further include a light shielding structure 50 located between the light emitter 211 and the light receiver 212. The light shielding structure 50 can be used to block the light emitted by the light emitter 211 from directly entering the light receiver 212 along the path below the top surface of the cover plate 10, thereby interfering with the light receiver 212 receiving the light reflected or scattered by the user's tissue. In other words, the light shielding structure 50 can be used to make the light received by the light receiver 212 come from the user's tissue as much as possible, thereby improving the detection accuracy of the optical heart rate detection module 21.

[0120] FIG. 7 is a schematic view of another embodiment of the cover plate shown in FIG. 6 from another angle.

[0121] In some embodiments, the first area 1 can include a first light transmission area 1c, a second light transmission area 1d, and a light shielding area 1e, and the light shielding area 1e can be located between the first light transmission area 1c and the second light transmission area 1d. The first light transmission area 1c can be disposed opposite to the light emitter 211. The second light transmission area 1d can be disposed opposite to the light receiver 212. The first light transmission area 1c can be used to project the light emitted by the light emitter 211. The light receiver 212 can receive the light transmitted by the outer side of the cover plate 10. It can be understood that the light shielding area 1e can be used as the light shielding structure 50 of the key module 100.

[0122] For example, the light shielding area 1e can be made of a light shielding material for light shielding. The first light transmission area 1c and the second light transmission area 1d can be made of a light transmission material.

[0123] For example, the first light transmission area 1c, the second light transmission area 1d, and the light shielding area 1e can be spaced apart from each other (as shown in FIGS. 6 and 7). The first light transmission area 1c, the second light transmission area 1d, and the light shielding area 1e are connected through the connecting area 3. For ease of understanding, the first light transmission area 1c, the second light transmission area 1d, the light shielding area 1e, the second area 2, and the connecting area 3 are distinguished by dashed lines in FIG. 7, and the connecting area 3 is filled with a filling pattern.

[0124] In some embodiments, the light blocking region 1e can be an integral structure with other regions of the cover plate 10, i.e., the light blocking region 1e is integrated with other regions of the cover plate 10 and can be formed in the process of manufacturing the cover plate 10. In other embodiments, the light blocking region 1e can be pre-manufactured (the light blocking region 1e is a non-transparent part) and assembled with the first transparent region 1c, the second transparent region 1d, the second region 2, and the connecting region 3 by an assembly process, thereby manufacturing the cover plate 10.

[0125] In other embodiments, the light blocking region 1e can also be directly connected between the first transparent region 1c and the second transparent region 1d.

[0126] In other embodiments, the first region 1 can also not be provided with the light blocking region 1e and is entirely made of a transparent material (as shown in FIG. 3).

[0127] As shown in FIG. 6, the key module 100 can further include a Fresnel film 40, which can be disposed between the light emitting device 211 and the first region 1. The Fresnel film 40 can be used to shield other structures near the light emitting device 211, so as to avoid the user from seeing the other structures from the outside of the cover plate 10, thereby enhancing the appearance experience of the product. The Fresnel film 40 can also make the light emitted by the light emitting device 211 to be transmitted, and can make the light more concentrated or reduce scattering, thereby enhancing the brightness of the light emitting device 211.

[0128] As shown in FIGS. 6 and 7, the ambient light sensor 31 can be disposed on the inner surface 2a of the second region 2. It can be understood that the second region 2 of the cover plate 10 can be used to protect the ambient light sensor 31.

[0129] In some embodiments, the ambient light sensor 31 can be used to detect the ultraviolet content in the ambient light. The second region 2 can be a transparent region. In this way, the ambient light can pass through the second region 2 and be collected by the ambient light sensor 31. The ambient light sensor 31 can be used to generate an electrical signal according to the ultraviolet content in the ambient light.

[0130] In some embodiments, the ambient light sensor 31 can also be used to detect the intensity of the ambient light, i.e., to detect the brightness and darkness of the ambient light. The ambient light sensor 31 can be used to generate an electrical signal according to the intensity of the ambient light.

[0131] It can be understood that when the key module 100 is installed on the side surface 1004 of the electronic device 1000 (as shown in FIG. 1), the ambient light sensor 31 can be located on the side surface 1004 of the electronic device 1000, and the ambient light sensor 31 can detect the light of the environment in which the electronic device 1000 is located in real time during the process in which the user wears the electronic device 1000. Compared with the scheme in which the key module 100 is installed on the back surface of the electronic device 1000, the electronic device 1000 does not need to be taken off the user, and thus the operation can be simplified and the user experience can be improved.

[0132] It can be understood that the first detection assembly 20 and the second detection assembly 30 can be directly fixed to the cover plate 10, or the first detection assembly 20 and the second detection assembly 30 can also be indirectly fixed to the cover plate 10 through other structural members, and the first detection assembly 20 and the second detection assembly 30 can be spaced apart from the cover plate 10.

[0133] Exemplarily, a fixing connection manner of the optical heart rate detection module 21, the ambient light sensor 31, and the cover plate 10 is introduced below.

[0134] As shown in FIGS. 5 and 6, the key module 100 can further include a bracket 60 and a circuit board 70. The bracket 60 can include a first surface 61 and a second surface 62, and the first surface 61 and the second surface 62 are oppositely arranged. Exemplarily, the first surface 61 and the second surface 62 are sequentially arranged from top to bottom along the Z-axis direction.

[0135] The cover plate 10 can be arranged on the first surface 61 of the bracket 60, and the circuit board 70 is arranged on the second surface 62 of the bracket 60. In other words, the cover plate 10, the bracket 60, and the circuit board 70 are sequentially arranged from top to bottom along the Z-axis direction. The first detection assembly 20 and the second detection assembly 30 can be arranged between the circuit board 70 and the cover plate 10. The first detection assembly 20 can be oppositely arranged with the first area 1, and the second detection assembly 30 can be oppositely arranged with the second area 2. The first detection assembly 20 and the second detection assembly 30 can be indirectly fixed to the cover plate 10 through the bracket 60 and the circuit board 70.

[0136] It can be understood that by arranging the bracket 60 and the circuit board 70, the cover plate 10 is arranged on the first surface 61 of the bracket 60, and the circuit board 70 is arranged on the second surface 62 of the bracket 60. The first surface 61 and the second surface 62 are oppositely arranged. The bracket 60 can support a space for placing the optical heart rate detection module 21 and the ambient light sensor 31 between the cover plate 10 and the circuit board 70. It can be understood that the cover plate 10, the bracket 60, and the circuit board 70 can be used to protect the devices located in the space.

[0137] In some embodiments, the bracket 60 can be made of plastic, plastic, or the like. In this way, the bracket 60 has a relatively light weight and is easy to process.

[0138] In some embodiments, the first detection component 20 and the second detection component 30 can be disposed on the circuit board 70 and electrically connected to the circuit board 70.

[0139] FIG. 8 is an assembly diagram of an embodiment of the light emitter 211, the light receiver 212, the ambient light sensor 31, and the circuit board 70 shown in FIG. 6.

[0140] As shown in FIGS. 6 and 8, the light emitter 211, the light receiver 212, and the ambient light sensor 31 can be fixedly spaced apart on the circuit board 70 and electrically connected to the circuit board 70. The bracket 60 is fixedly connected between the cover plate 10 and the circuit board 70. The light emitter 211, the light receiver 212, and the ambient light sensor 31 can be fixedly connected to the cover plate 10 through the bracket 60 and the circuit board 70.

[0141] In some embodiments, the circuit board 70 can also be used to transmit electrical signals. For example, the circuit board 70 can be a rigid printed circuit board (PCB) or a flexible printed circuit board (FPC).

[0142] In some embodiments, the circuit board 70 can be electrically connected to a main board (not shown). The light emitter 211, the light receiver 212, and the ambient light sensor 31 are electrically connected to the circuit board 70. When the light receiver 212 receives light reflected by a user's finger, the light signal is converted into an electrical signal. When the ambient light sensor 31 receives ambient light, the ambient light information is converted into an electrical signal. The electrical signal generated by the ambient light sensor 31 and the electrical signal generated by the light receiver 212 can be transmitted to the main board through the circuit board 70.

[0143] For example, the key module 100 can further include a flexible circuit board 80 (in FIG. 6, the circuit board 70 and the flexible circuit board 80 are distinguished by different fill patterns). The flexible circuit board 80 can be used to transmit signals on the circuit board 70 to the main board. In addition, the flexible circuit board 80 and the circuit board 70 can also be used to electrically connect the battery of the electronic device 1000 and the light emitter 211, the light receiver 212, and the ambient light sensor 31 to achieve power supply. Alternatively, the chip on the main board can also send instructions to the ambient light sensor 31 and / or the light emitter 211 through the flexible circuit board 80 and the circuit board 70 to detect ambient light and / or a user's heart rate signal.

[0144] In some embodiments, the flexible circuit board 80 and the circuit board 70 can be an integrally formed structure. For example, the flexible circuit board 80 and the circuit board 70 can be part of an integrally formed rigid-flexible circuit board. Alternatively, the flexible circuit board 80 and the circuit board 70 can be part of an integrally formed flexible circuit board 80. In other embodiments, the flexible circuit board 80 can also be electrically connected to the circuit board 70 by providing an electrical connector. The electrical connector can be a board to board connector (BTB) or a zero insertion force connector (ZIF).

[0145] As shown in FIG. 8, the circuit board 70 can include a first portion 76 and a second portion 77. The first portion 76 and the second portion 77 can be arranged at an angle. As shown in FIG. 8, the first portion 76 and the second portion 77 can have an angle A therebetween. The first detection assembly 20 can be fixed to the first portion 76, and the second detection assembly 30 can be fixed to the second portion 77. For example, the light emitting device 211 and the light receiving device 212 can be fixed to the first portion 76, and the ambient light sensor 31 can be fixed to the second portion 77.

[0146] It can be understood that when the side 1004 of the electronic device 1000 is curved (as shown in FIG. 1), the circuit board 70 is divided into the first portion 76 and the second portion 77 arranged at an angle. When the key module 100 is installed on the side 1004, the circuit board 70 can better match the shape of the side 1004, thereby avoiding the waste of space of the electronic device 1000.

[0147] In some embodiments, the first portion 76 and the second portion 77 can be part of an integrally formed flexible circuit board. Alternatively, the first portion 76 and the second portion 77 can be part of an integrally formed rigid-flexible circuit board. In other embodiments, the first portion 76 and the second portion 77 can be two independent circuit boards.

[0148] FIG. 9 is a structural schematic diagram of an embodiment of the bracket 60 shown in FIG. 5, and FIG. 10 is a structural schematic diagram of the bracket 60 shown in FIG. 8 from another angle.

[0149] As shown in FIGS. 9 and 10, the bracket 60 can include a side wall 63 and a baffle 64. The side wall 63 and the baffle 64 are schematically divided by the dashed line in FIG. 9.

[0150] Exemplarily, the side wall 63 can include a top surface 631, a bottom surface 632, an inner side surface 633 and an outer side surface 634. The top surface 631 and the bottom surface 632 are oppositely arranged. The inner side surface 633 and the outer side surface 634 are spaced apart, and the outer side surface 634 surrounds the inner side surface 633. The inner side surface 633 of the side wall 63 can be connected between the top surface 631 of the side wall 63 and the bottom surface 632 of the side wall 63. The outer side surface 634 of the side wall 63 can be connected between the top surface 631 of the side wall 63 and the bottom surface 632 of the side wall 63. It can be understood that the top surface 631 of the side wall 63 can be a part of the first surface 61 of the bracket 60. The bottom surface 632 of the side wall 63 can be a part of the second surface 62 of the bracket 60.

[0151] As shown in FIG. 6, FIG. 9 and FIG. 10, the side wall 63 can be fixed between the cover plate 10 and the circuit board 70. Exemplarily, the top surface 631 of the side wall 63 can be fixedly connected to the bottom surface 102 of the cover plate 10, and the bottom surface 632 of the side wall 63 can be fixedly connected to the circuit board 70.

[0152] In some embodiments, the top surface 631 of the side wall 63 is a stepped surface. The cover plate 10 can be overlapped on the stepped surface. A part of the stepped surface can be oppositely and spacedly arranged relative to the side surface 103 of the cover plate 10. In this way, the top surface 631 of the side wall 63 can serve as a positioning structure of the cover plate 10 when the cover plate 10 is installed on the bracket 60, and limit the position of the cover plate 10 relative to the bracket 60, which is beneficial for quick installation and improves the installation efficiency. In addition, a part of the stepped surface can be oppositely and spacedly arranged relative to the side surface 103 of the cover plate 10, and glue can be applied between the stepped surface and the side surface of the cover plate 10 to achieve the fixed connection of the cover plate 10 and the side wall 63.

[0153] In some embodiments, the top surface 631 of the side wall 63 and the cover plate 10 can be fixedly connected by gluing or welding.

[0154] In some embodiments, the bottom surface 632 of the side wall 63 and the circuit board 70 can be fixedly connected by gluing or welding. Exemplarily, the bottom surface 632 of the side wall 63 and the circuit board 70 can be fixedly connected by waterproof glue.

[0155] Exemplarily, the side wall 63 can be annular, and the side wall 63, the cover plate 10 and the circuit board 70 can enclose a containing space 109. The first detection assembly 20 and the second detection assembly 30 can be installed in the containing space 109. Exemplarily, the inner side surface 633 of the side wall 63, the cover plate 10 and the circuit board 70 can enclose the containing space 109.

[0156] The first detection assembly 20 and the second detection assembly 30 can be located in the accommodation space 109. Illustratively, the light emitting device 211, the light receiving device 212, and the ambient light sensor 31 can be located in the accommodation space 109. It can be understood that the cover plate 10, the bracket 60, and the circuit board 70 can protect the devices located in the accommodation space 109.

[0157] Illustratively, when the side wall 63 is annular, the waterproof adhesive can be annular. It can be understood that when the side wall 63 is fixed to the circuit board 70 by the waterproof adhesive, the waterproof adhesive can seal the accommodation space 109. Moreover, when the key module 100 is located in a humid environment or underwater, the waterproof adhesive can prevent water vapor from entering the accommodation space 109 from the gap between the housing and the circuit board 70, thereby protecting the devices (such as the optical heart rate detection module 21 / ambient light sensor 31, etc.) in the accommodation space 109 from water.

[0158] In some embodiments, the baffle 64 can be connected to the inner side surface 633 of the side wall 63. Illustratively, the side wall 63 can include a first side wall 635 and a second side wall 636. The first side wall 635 and the second side wall 636 can be spaced apart and oppositely arranged. The baffle 64 can be connected between the first side wall 635 and the second side wall 636. The baffle 64 can be located between the cover plate 10 and the circuit board 70. In this way, the baffle 64 can be used to divide the accommodation space 109 into multiple subspaces.

[0159] It can be understood that the surface of the first side wall 635 facing the accommodation space 109 can be part of the inner side surface 633 of the side wall 63, and the surface of the second side wall 636 facing the accommodation space 109 can be part of the inner side surface 633 of the side wall 63. The surface of the first side wall 635 facing away from the accommodation space 109 can be part of the outer side surface 634 of the side wall 63, and the surface of the second side wall 636 facing away from the accommodation space 109 can be part of the outer side surface 634 of the side wall 63.

[0160] In some embodiments, the first side wall 635 and the second side wall 636 can be arranged along the width direction (X-axis direction) of the key module 100.

[0161] In some embodiments, the baffle 64 and the side wall 63 can be an integrally formed structural member. For example, the baffle 64 and the side wall 63 can be formed into an integrally formed structural member by a mold pouring process.

[0162] In other embodiments, the baffle 64 and the side wall 63 can be separately prepared and then assembled and connected by a gluing or welding process, etc.

[0163] It can be understood that the number of baffles 64 can be one or more. When the number of baffles 64 is more than one, the plurality of baffles 64 can be arranged at intervals, and the accommodation space 109 can be divided into two or more subspaces.

[0164] Exemplarily, the bracket 60 can include one baffle 64, and the baffle 64 divides the accommodation space 109 into two subspaces. The first detection component 20 and the second detection component 30 can be located in the two subspaces, respectively. For the convenience of understanding, the subspace in which the first detection component 20 is located is referred to as the first space 1091, and the subspace in which the second detection component 30 is located is referred to as the second space 1092.

[0165] Exemplarily, the baffle 64 can also cover the cover plate 10 and the circuit board 70. The baffle 64 and part of the side wall 63, the first region 1, and the circuit board 70 enclose the first space 1091, and the baffle 64 and another part of the side wall 63, the second region 2, and the circuit board 70 enclose the second space 1092. The first detection component 20 is arranged in the first space 1091, and the second detection component 30 is arranged in the second space 1092.

[0166] Exemplarily, the optical heart rate detection module 21 can be in the first space 1091. The ambient light sensor 31 can be located in the second space 1092.

[0167] It can be understood that, by dividing the accommodation space 109 into the first space 1091 and the second space 1092 by the baffle 64, the first detection component 20 is arranged on the circuit board in the first space 1091, and the second detection component 30 is arranged in the second space 1092. In this way, when one of the first space 1091 and the second space 1092 is filled with water, causing the device to malfunction, the baffle 64 can be used to block the spread of water vapor to the other space, and the device in the other space can still be protected, and the key module 100 can still retain part of the function.

[0168] In some embodiments, the bracket 60 can further include a light shielding plate 65. The light shielding plate 65 can be connected to the inner side surface 633 of the side wall 63, the bottom surface 102 of the cover plate 10, and the circuit board 70. The light shielding plate 65 can be arranged between the light emitter 211 and the light receiver 212 of the optical heart rate detection module 21. The light shielding plate 65 is made of a light shielding material. In this way, the light shielding plate 65 can serve as a light shielding structure 50 between the light emitter 211 and the light receiver, and can be used to block the light emitted by the light emitter 211 from directly entering the light receiver 212 in the accommodation space 109, thereby interfering with the reception of the light reflected or scattered by the user's tissue by the light receiver 212.

[0169] As shown in FIG. 6, the first region 1 of the cover plate 10 can include a light shielding area 1e, and the support 60 can include a light shielding plate 65. The light shielding plate 65 of the support 60 can be arranged opposite to the light shielding area 1e of the first region 1. In this case, the light shielding area 1e and the light shielding plate 65 can jointly form the light shielding structure 50.

[0170] In other embodiments, part of the second detection assembly 30 can be arranged between the light emitter 211 and the light receiver 212 for light shielding. For example, the distance between the light emitter 211 and the light receiver 212 along the length direction of the key module 100 can be 2 mm, and the device of the second detection assembly 30 with a size less than 2 mm can be arranged between the light emitter 211 and the light receiver 212.

[0171] In other embodiments, when the support 60 is a columnar structure or a plate structure, the space for placing the optical heart rate detection module 21 and the ambient light sensor 31 can be an open space. When the key module 100 is installed in the housing 300, the cover plate 10, the support 60, and the circuit board 70 can form the accommodation space 109 together with the housing 300.

[0172] It can be understood that the first detection assembly 20 and the second detection assembly 30 are indirectly arranged on the cover plate in the foregoing embodiments through the circuit board 70 and the support 60. In other embodiments, the first detection assembly 20 and the second detection assembly 30 can also be directly arranged on the inner side of the cover plate 10 through gluing or the like.

[0173] As shown in FIG. 5 and FIG. 6, the key module 100 can further include a light-transmitting piece 90, which can be used to fill the accommodation space 109. The light-transmitting piece 90 can be connected to the first detection assembly 20, the second detection assembly 30, and the circuit board 70. For example, the light-transmitting piece 90 can be filled in the accommodation space 109. The light-transmitting piece 90 can be connected to the light emitter 211, the light receiver 212, and the ambient light sensor 31.

[0174] In some embodiments, the light-transmitting piece 90 can be made of a light-transmitting material, such as transparent glue or transparent plastic. In this way, when the light-transmitting piece 90 is filled in the accommodation space 109, the light-transmitting piece 90 will not affect the propagation of light. For example, the light emitted by the light emitter 211 can be transmitted through the light-transmitting piece 90, the first region 1, and the outer side of the cover plate 10. The light receiver 212 can receive the light transmitted through the first region 1 and the light-transmitting piece 90. The ambient light sensor 31 can receive the light transmitted through the second region 2 and the light-transmitting piece 90.

[0175] As shown in FIG. 6, the light emitter 211 can include a top surface 1111, a bottom surface 1112, and a side surface 1113. The side surface 1113 of the light emitter 211 is connected between the top surface 1111 of the light emitter 211 and the bottom surface 1112 of the light emitter 211. The bottom surface 1112 of the light emitter 211 can be fixedly connected to the circuit board 70. When the light-transmissive member 90 is filled in the accommodating space 109, the light-transmissive member 90 can be connected to the side surface 1113 of the light emitter 211, the top surface 1111 of the light emitter 211, and the circuit board 70. In this way, the light-transmissive member 90 can cover the light emitter 211, and the light-transmissive member 90 can protect the light emitter 211 and can play a waterproof role for the light emitter 211. The connection relationship between the light-transmissive member 90 and the light collector 212 and the ambient light sensor 31 can refer to the connection relationship between the light-transmissive member 90 and the light emitter 211, so that the light-transmissive member 90 can be used to protect the light collector 212, the ambient light sensor 31, and can play a waterproof role for the light collector 212, the ambient light sensor 31.

[0176] It can be understood that by providing the light-transmissive member 90, the light collector 212, the light emitter 211, and the ambient light sensor 31 can be protected and dustproof and waterproof. In addition, the light-transmissive member 90 can also be used to assist the support 60 to support the space between the cover plate 10 and the circuit board 70, so as to avoid collapse and damage to the light collector 212, the light emitter 211, and the ambient light sensor 31.

[0177] In some embodiments, the cover plate 10, the light-transmissive member 90, and the support 60 can be an integrally formed structural member. In this way, the connection strength between the cover plate 10, the light-transmissive member 90, and the support 60 is better. It should be noted that two components are integrated into an integrated structure by an integrally forming process, which means that one of the two components is connected to the other component during the process of forming the one component, and the two components do not need to be connected together by reprocessing (such as bonding, welding, buckle connection, screw connection).

[0178] In some embodiments, the light-transmissive member 90 can be transparent glue solidified and formed. For example, when the light-transmissive member 90 is glue, the light-transmissive member 90 can be used to form a fixed connection structure between the cover plate 10 and the support 60, so that the cover plate 10 and the support 60 do not need additional fixing structures, and the assembly process is simplified.

[0179] As shown in FIG. 6 and FIG. 8, the circuit board 70 can be provided with a first through hole 71 and a second through hole 72 which are spaced apart. The first through hole 71 and the second through hole 72 can both communicate the accommodating space 109 with the outside. The light emitter 211 can be spaced apart from the first through hole 71 and the second through hole 72. The light receiver 212 can be spaced apart from the first through hole 71 and the second through hole 72. The ambient light sensor 31 can be spaced apart from the first through hole 71 and the second through hole 72. When the light-transmissive piece 90 is formed by a glue-filling process, one of the first through hole 71 and the second through hole 72 can serve as a glue-filling hole, and the other can serve as a glue-discharging hole.

[0180] Exemplarily, the light emitter 211 and the light receiver 212 can be located between the first through hole 71 and the second through hole 72.

[0181] Exemplarily, the assembling steps of the key module 100 can include: first, fixing the optical heart rate detection module 21 and the ambient light sensor 31 to the circuit board 70, then pre-fixing the bracket 60 to the circuit board 70 by waterproof adhesive, fixing the cover plate 10 to the side of the bracket 60 away from the circuit board 70 by a jig, and the circuit board 70, the cover plate 10 and the side wall 63 of the bracket 60 enclosing the accommodating space 109. The circuit board 70 can be provided with a first through hole 71 and a second through hole 72 which are spaced apart, and the first through hole 71 and the second through hole 72 both communicate the accommodating space 109 with the outside. Glue is injected into the accommodating space 109 through the first through hole 71 / second through hole 72, and the glue solidifies to form the light-transmissive piece 90. The light-transmissive piece 90 can simultaneously contact and connect the bracket 60, the cover plate 10, the optical heart rate detection module 21 (including the light receiver 212 and the light emitter 211), the ambient light sensor 31 and the circuit board 70, forming an integrally formed structural member of the bracket 60, the cover plate 10, the light-transmissive piece 90, the optical heart rate detection module 21 (including the light receiver 212 and the light emitter 211), the ambient light sensor 31 and the circuit board 70. At this time, the light-transmissive piece 90 can also be used to strengthen the connection strength between the circuit board 70 and the housing.

[0182] In other embodiments, the baffle 64 of the bracket 60 can separate the accommodating space 109 into independent first space 1091 and second space 1092. In this way, when one of the first space 1091 and the second space 1092 is flooded, the device in the other space will not be affected.

[0183] When the light-transmitting piece 90 is assembled with the support 60, the cover plate 10 and the circuit board 70 by the jig glue-filling process, the first space 1091 and the second space 1092 can be filled with glue respectively. Exemplarily, the first through hole 71 and the second through hole 72 can be located on two sides of the baffle 64 respectively. The first through hole 71 can communicate the outside with the first space 1091. The second through hole 72 can communicate the outside with the second space 1092. The first through hole 71 and the second through hole 72 can both serve as glue-filling holes. The light-transmitting piece 90 fills the first space 1091 through the first through hole 71 by the vacuum glue-filling process, and the light-transmitting piece 90 fills the second space 1092 through the second through hole 72 by the vacuum glue-filling process. In other embodiments, more through holes can be provided on the circuit board 70 to realize the injection and outflow of glue during the glue-filling process. The present application does not make any limitation.

[0184] In other embodiments, the light-transmitting piece 90 can also be manufactured into a shape by processing first, and then be fixed to the support 60 and the cover plate 10 by gluing, clamping or welding, etc. At this time, the cover plate 10 is fixedly connected to the support 60 by welding or gluing process additionally.

[0185] In some embodiments, the transmittance of the light-transmitting piece 90 can be greater than 90%. In this way, the light-transmitting piece 90 has a smaller blocking effect on light. When the light-emitting device 211 emits light, and the light-receiving device 212 and the ambient light sensor 31 receive light through the light-transmitting piece 90, the loss of light is smaller, and the measurement accuracy of the optical heart rate detection module 21 and the ambient light sensor 31 is higher.

[0186] The above describes several structures of the key module 100. The following describes an embodiment of signal transmission between the key module 100 and the mainboard of the electronic device 1000.

[0187] As shown in FIG. 3, the shell 300 can be provided with a mounting hole 301. The key module 100 can be electrically connected to the mainboard (not shown in the figure) arranged inside the shell 300 through the mounting hole 301. Exemplarily, when the key module 100 is mounted on the middle frame 310, the mounting hole 301 can be located on the middle frame 310.

[0188] Exemplarily, the flexible circuit board 80 can be located outside the accommodating space 109. The flexible circuit board 80 can be connected to and electrically connected to the circuit board 70. Exemplarily, when the key module 100 is mounted on the middle frame 310, part of the flexible circuit board 80 can be located in the internal space 1003 for connecting the mainboard, part of the flexible circuit board 80 can be located in the mounting hole 301, and part of the flexible circuit board 80 can be located outside the middle frame 310 for electrically connecting the circuit board 70. The circuit board 70 can be electrically connected to the mainboard through the flexible circuit board 80.

[0189] As shown in FIG. 3 and FIG. 6, the collection path of the heart rate signal of the user can include: the light emitted by the light emitter 211 can pass through the light-transmitting member 90, and irradiate on the finger of the user through the first area 1 of the cover plate 10. Then the light can be reflected or scattered by the blood vessels in the finger of the user, and return to the accommodation space 109 through the first area 1 of the cover plate 10, and be received by the light receiver 212 through the light-transmitting member 90. After the light receiver 212 of the optical heart rate detection module 21 collects the optical signal reflected by the skin of the user, the optical signal is converted into an electrical signal, which is transmitted to the mainboard of the electronic device 1000 through the circuit board 70 and the flexible circuit board 80 in sequence.

[0190] Exemplarily, the electronic device 1000 can include a PPG chip (not shown in the figure), which can be fixed on the mainboard and electrically connected to the mainboard. The PPG chip can be electrically connected to the light receiver 212 through the mainboard and the circuit board 70. The PPG chip can be used to process the electrical signal collected by the light receiver 212, and obtain the photo plethysmography (PPG) signal of the user.

[0191] In other embodiments, the electronic device 1000 can also include a heart rate chip for processing the heart rate signal processed by other methods except PPG. The heart rate chip can be used to process the electrical signal converted by the light receiver 212 to obtain the heart rate information of the user.

[0192] Exemplarily, the collection path of the ambient light can include: the ambient light can pass through the second area 2 of the cover plate 10, enter the accommodation space 109, and be received by the ambient light sensor 31 through the light-transmitting member 90. The ambient light sensor 31 converts the collected light signal into an electrical signal, which is transmitted to the mainboard of the electronic device 1000 through the circuit board 70 and the flexible circuit board 80 in sequence.

[0193] Exemplarily, the electronic device 1000 can also include a chip (hereinafter referred to as an ambient light chip) for processing the electrical signal converted by the ambient light. The ambient light chip can be fixed on the mainboard and electrically connected to the mainboard. The ambient light chip can be electrically connected to the ambient light sensor 31 through the mainboard and the circuit board 70. The ambient light chip can be used to process the electrical signal of the ambient light sensor 31, and further obtain the light-related parameter information of the external environment in which the key module 100 is located, such as the ultraviolet content in the ambient light or the light intensity.

[0194] It can be understood that by setting the ambient light sensor 31, the content of ultraviolet rays in the environment where the key module 100 is located can be detected in real time, and the ambient light chip can provide protection suggestions for the user's travel. The ambient light chip can also be electrically connected to the screen 200 of the electronic device 1000. When the ambient light sensor 31 detects that the intensity (brightness) of the ambient light is large, the ambient light chip can be used to correspondingly increase the brightness of the screen 200, so that the user can clearly see the text and patterns on the screen 200; when the intensity (brightness) of the ambient light is detected to be small, the ambient light chip can be used to correspondingly reduce the brightness of the screen 200, so that the user can clearly see the text and patterns displayed on the screen 200, while saving the energy consumption of the screen 200. The ambient light chip can also count the sunshine time in a day according to the ambient light monitored by the ambient light sensor 31.

[0195] Hereinafter, a specific embodiment in which the key module 100 is installed on the electronic device 1000 will be introduced.

[0196] As shown in FIGS. 2 and 3, the housing 300 of the electronic device 1000 can be provided with a mounting groove 302. The opening of the mounting groove 302 can be located on the side surface 1004 of the electronic device 1000. The key module 100 can be installed in the mounting groove 302. Exemplarily, when the key module 100 is installed on the middle frame 310, the mounting groove 302 can be located on the middle frame 310.

[0197] Exemplarily, the wall surface of the mounting groove 302 can be provided with a stop structure 3109. The stop structure 3109 can be in the form of a buckle. One end of the bracket 60 can also have a connecting structure 69 (as shown in FIG. 10). The connecting structure 69 can be in the form of a buckle. When the key module 100 is installed on the electronic device 1000, the stop structure 3109 can be located on the outside of the connecting structure 69 of the bracket 60. In other words, the stop structure 3109 can be located on the side of the connecting structure 69 away from the internal space 1003 of the electronic device 1000. In this way, the stop structure 3109 and the connecting structure 69 can cooperate to prevent the key module 100 from falling towards the outside of the electronic device 1000.

[0198] Exemplarily, the number of the connecting structures 69 can be two, and the two connecting structures 69 are arranged along the length direction of the bracket 60 and connected to the two ends of the bracket 60, respectively. The number of the stop structures 3109 can also be two.

[0199] FIG. 11 is a partial cross-sectional view of an embodiment of the electronic device 1000 shown in FIG. 1 at the cross-sectional line C-C. FIG. 11 is intended to show the installation of the key module 100 shown in FIG. 5 on the electronic device 1000.

[0200] As shown in FIG. 5 and FIG. 11, the key module 100 can further include a pressure sensing circuit 98 and a pressure sensing component 99. The pressure sensing component 99 can be arranged on the inner side of the cover plate 10, and the pressure sensing circuit 98 is fixed to the pressure sensing component 99. When the cover plate 10 is pressed and the pressure sensing component 99 is deformed, the pressure sensing circuit 98 is used to detect the deformation of the pressure sensing component 99.

[0201] For example, the resistance value of the pressure sensing circuit 98 can change according to the degree of deformation of the pressure sensing component 99. The electronic device 1000 can be provided with a pressure sensing chip (not shown in the figure). For example, the pressure sensing chip can be mounted on the mainboard and electrically connected to the mainboard. The pressure sensing chip can be electrically connected to the pressure sensing circuit 98. The electronic device 1000 can provide a current with a fixed voltage value to the pressure sensing circuit 98, and when the resistance value of the pressure sensing circuit 98 changes, the current on the pressure sensing circuit 98 will also change. The pressure sensing chip can determine the size of the current to determine the size of the force exerted by the user on the shell.

[0202] For example, when the user measures the electrocardiogram signal or the heart rate signal, the user places the finger on the cover plate 10, and the pressure sensing component 99 can deform to different degrees according to the size of the force between the user's finger and the cover plate 10, and the pressure sensing circuit 98 can be used to detect the deformation of the pressure sensing component 99. In this way, the degree of deformation of the pressure sensing component 99 detected by the pressure sensing circuit 98 can determine the size of the force exerted by the user's finger on the cover plate 10.

[0203] In some embodiments, when the force between the user's finger and the cover plate 10 is small, the light emitted by the light emitter 211 can only penetrate a limited depth of the tissue under the user's skin, and the user's blood vessels have a certain depth from the surface of the user's skin. Generally, the greater the force exerted by the user on the cover plate 10, the better the user's finger fits the cover plate 10, and the deeper the light emitted by the light emitter 211 penetrates the user's skin. Therefore, when the key module 100 is used to measure the PPG signal, a first threshold value can be set. When the force between the user's finger and the cover plate 10 is greater than or equal to the first threshold value, the light emitted by the light emitter 211 can penetrate the user's skin to a greater depth, so that most of the light can be irradiated to the position of the blood vessels under the user's skin. When the pressure sensing chip detects that the real-time force detected by the pressure sensing component 99 is greater than or equal to the first threshold value, the pressure sensing chip controls the key module 100 to start collecting the user's PPG signal, so that the collected PPG signal has better accuracy.

[0204] In some embodiments, the pressure sensing circuit 98 and the pressure sensing component 99 can cooperate to realize the key function of the key module 100. For example, when the electronic device 1000 is not in the health detection state, the pressure sensing chip monitors the real-time force detected by the pressure sensing component 99, and when the real-time force is greater than or equal to a second threshold value, that is, when the user presses the cover plate 10 with a force greater than or equal to the second threshold value, it is determined that the user is using the key function of the key module 100.

[0205] In some embodiments, the second threshold value can be greater than the first threshold value.

[0206] In some embodiments, the electronic device 1000 can further include a motor (not shown in the figure). The motor can be installed in the shell 300. For example, the motor can be arranged in the internal space 1003 of the electronic device 1000, and the key module 100 can be electrically connected to the motor.

[0207] In some embodiments, the motor can be installed in the rear cover 320 (as shown in FIG. 1). It can be understood that when the user wears the electronic device 1000, the rear cover 320 is in close contact with the user's wrist skin, and the motor vibration can be better perceived by the user through the rear cover 320.

[0208] The motor can be used to vibrate according to the data detected by the key module 100. Several embodiments of the motor vibrating according to the data detected by the key module 100 will be introduced below.

[0209] In some embodiments, when the key module 100 is used as a touch key of the electronic device 1000, the motor can vibrate to prompt the user whether the operation of the key is effective.

[0210] In some embodiments, the pressure sensing circuit 98 can be electrically connected to the motor of the electronic device 1000. When the user presses the cover plate 10, the pressure sensing circuit 98 detects that the pressure sensing component 99 deforms, and the motor can vibrate. The pressure sensing circuit 98, the pressure sensing component 99, and the motor can cooperate to realize the virtual key function of the key module 100. For example, the corresponding threshold value is set by the whole machine algorithm, when the user presses the cover plate 10 with a finger, the resistance value of the pressure sensing circuit 98 changes, generates an electrical signal, and is calculated by the pressure sensing chip inside the whole machine. The pressure sensing chip can be electrically connected to the motor to control the motor to generate a vibration, achieving a function similar to a touch key.

[0211] In some embodiments, when the key module 100 collects the health parameters of the user, when the electrocardiogram signal or the heart rate signal collection is completed, the motor can vibrate to prompt the completion of the detection.

[0212] For example, the pressure sensing assembly 99 can include a key rod 991 and a support steel sheet 992. The key rod 991 can include a first surface 9911 and a second surface 9912. The first surface 9911 of the key rod 991 and the second surface 9912 of the key rod 991 are oppositely arranged. The first surface 9911 of the key rod 991 is fixed to the side of the circuit board 70 away from the cover plate 10. The support steel sheet 992 is connected to the second surface 9912 of the key rod 991, and the pressure sensing circuit 98 is fixed to the side of the support steel sheet 992 away from the key rod 991. When the cover plate 10 is subjected to pressure, the support steel sheet 992 can elastically deform, and the pressure sensing circuit 98 can be used to detect the deformation of the support steel sheet 992.

[0213] In other words, the cover plate 10, the circuit board 70, the key rod 991 and the support steel sheet 992 can be arranged in sequence from top to bottom along the Z-axis direction.

[0214] It can be understood that the distance between the pressure sensing circuit 98 and the circuit board 70 is far, and when the pressure sensing circuit 98 fails, the pressure sensing circuit 98 can be repaired alone, without affecting the optical heart rate detection module 21, and the repair is more convenient.

[0215] In some embodiments, when the key module 100 is installed in the middle frame 310, part of the key rod 991 is located in the internal space 1003 of the electronic device 1000, and the other part is exposed to the middle frame 310. The support steel sheet 992 and the pressure sensing circuit 98 can be installed in the internal space 1003 of the electronic device 1000. In this way, the support steel sheet 992 and the pressure sensing circuit 98 can be installed in the internal space 1003 of the electronic device 1000, and when the electronic device 1000 falls or is subjected to a larger external force impact, the middle frame 310 can protect the pressure sensing circuit 98 and the support steel sheet 992, and the reliability of the electronic device 1000 is better. Moreover, the key module 100 does not need to additionally set a waterproof structure to waterproof the pressure sensing circuit 98.

[0216] In some embodiments, the pressure sensing assembly 99 can further include an elastic member 993 abutting between the key rod 991 and the support steel sheet 992, and the elastic member 993 has elasticity. It can be understood that by setting the elastic member 993, the structural tolerance of the key rod 991 and the support steel sheet 992 can be absorbed, and the assembly tolerance between the key rod 991 and the support steel sheet 992 can also be absorbed, so as to avoid that the pressing force between the key rod 991 and the support steel sheet 992 is too large, causing the support steel sheet 992 to deform greatly, reducing the pressure sensing detection precision or causing the pressure sensing detection to fail. In addition, when the key module 100 is used as a key, the elastic member 993 can play a buffering role when a user presses the key module 100, and the elastic member 993 can also improve the use feel.

[0217] In some embodiments, the pressure sensing assembly 99 can further include a waterproof ring 994, which is sleeved on the key rod 991. When the key module 100 is fixed on the shell 300 of the electronic device 1000, the shell 300 can be provided with a fixing hole 303, and a portion of the key rod 991 is located in the fixing hole 303. At this time, the waterproof ring 994 can abut between the key rod 991 and the wall surface of the fixing hole 303. It can be understood that by arranging the waterproof ring 994, the water vapor or dust in the outside environment can be reduced to enter the internal space 1003 of the electronic device 1000 through the gap between the key rod 991 and the fixing hole 303, and interfere with the working of the device (such as the mainboard) in the internal space 1003 of the electronic device 1000.

[0218] Exemplarily, when the key module 100 is installed on the middle frame 310, the fixing hole 303 can be located on the middle frame 310. The fixing hole 303 can be communicated with the mounting groove 302.

[0219] In some embodiments, the waterproof ring 994 can be made of a material with elasticity such as silica gel or rubber.

[0220] In some embodiments, the pressure sensing assembly 99 can further include a clamping spring 995. The key rod 991 can be provided with a clamping groove 9913. The opening of the clamping groove 9913 can be located on the side surface of the key rod 991. When the key module 100 is installed on the shell 300, the opening of the clamping groove 9913 can be located in the internal space 1003 of the electronic device 1000. Part of the clamping spring 995 can be fixed in the clamping groove 9913, and part of the clamping spring 995 can extend out of the clamping groove 9913. In this way, the clamping spring 995 can prevent the key module 100 from loosening towards the outside of the electronic device 1000.

[0221] In some embodiments, the key module 100 can further include a limiting ring 996. The limiting ring 996 can be fixed on the key rod 991. When the key module 100 is installed on the shell 300, the limiting ring 996 can abut against the shell 300, and the limiting ring 996 and the clamping spring 995 can jointly limit the key rod 991 on the shell 300 to avoid the key rod 991 from being separated from the shell 300. Exemplarily, when the key module 100 is installed on the middle frame 310, the limiting ring 996 can abut against the middle frame 310.

[0222] It can be understood that the key module 100 of the present application can be installed on the shell 300 of the electronic device 1000 as an independent product. In the process of installing the key module 100 to the shell 300, the flexible circuit board 80 of the key module 100 can enter the internal space 1003 of the electronic device 1000 through the mounting hole 301. The shell 300 can be provided with a fixing hole 303, and the key rod 991 can be partially located in the fixing hole 303. The pressure sensing assembly 99 can be limited relative to the shell 300 through the waterproof ring 994, the clamping spring 995, and the limiting ring 996. The waterproof ring 994 can be used to reduce the water vapor or dust from the outside entering the internal space 1003 of the electronic device 1000 through the gap between the key rod 991 and the fixing hole 303. The mounting hole 301 is filled with a sealing member 305. The sealing member 305 can be used to seal the gap between the flexible circuit board 80 and the mounting hole 301, so as to prevent water vapor or dust from entering the internal space 1003 of the electronic device 1000 through the mounting hole 301. In this way, the assembly sealing between the key module 100 and the shell 300 is completed. The overall waterproof function of the electronic device 1000 is better. In some embodiments, the waterproof level of the electronic device 1000 can reach 5ATM.

[0223] In some embodiments, a curable waterproof adhesive can be used to wrap the part of the key module 100 located outside the shell 300 to achieve waterproofing.

[0224] In some embodiments, the sealing member 305 can be formed by applying waterproof adhesive in the mounting hole 301 and then curing it. It can be understood that, compared with the sealing member 305 made of rubber plugs or other elastic materials, the waterproof adhesive has fluidity before curing, can fill smaller gaps, can better adapt to the gap shape between the mounting hole 301 and the flexible circuit board 80, and can better seal the gap between the mounting hole 301 and the flexible circuit board 80.

[0225] In some embodiments, the same technical content as the key module 100 in the previous embodiments will not be repeated. FIG. 12 is an exploded schematic view of another embodiment of the key module 100 shown in FIG. 4. FIG. 13 is a structural schematic view of an embodiment of the key module 100 shown in FIG. 4 at the cross-sectional line D-D. FIG. 14 is a partial structural schematic view of another embodiment of the key module at another angle.

[0226] In some embodiments, the key module 100 can further include a third detection assembly, and the cover plate 10 further includes a third area 4 for arranging the third detection assembly. The third detection assembly is different from the second detection assembly 30. It can be understood that the key module 100 can further include more detection assemblies, and the key module 100 can have more functions, which is conducive to the multifunctionalization of the key module 100.

[0227] Exemplarily, the first detection component 20 is an optical heart rate detection module 21, and the third detection component can be an electrocardiogram detection module 22. The electrocardiogram detection module 22 can include a first electrode 221, which can be at least partially disposed on the outer surface 4b of the third region 4. The outer surface 4b of the third region 4 can be a portion of the top surface 101 of the cover plate 10. In FIG. 14, the first light-transmissive region 1c, the second light-transmissive region 1d, the light-blocking region 1e, the second region 2, the connecting region 3, and the third region 4 are schematically distinguished by dashed lines, and the first electrode 221 and the connecting region 3 are schematically shown using a fill pattern.

[0228] Exemplarily, the first electrode 221 can be partially disposed on the top surface 101 of the cover plate 10, partially disposed on the side surface 103 of the cover plate 10, and partially disposed on the bottom surface 102 of the cover plate 10. The first electrode 221 can be electrically connected to the circuit board 70. When the user performs electrocardiogram detection, the user's finger can contact the portion of the first electrode 221 disposed on the top surface 101 of the cover plate 10. The electrical signal of the user can be transmitted to the main board of the electronic device 1000 in sequence through the first electrode 221, the circuit board 70, and the flexible circuit board 80.

[0229] It can be understood that the first detection component 20 is set as the optical heart rate detection module 21, and the third detection component is set as the electrocardiogram detection module 22. When the user's finger contacts the top surface of the cover plate 10, the key module 100 can simultaneously measure the electrocardiogram signal and the heart rate signal (e.g., PPG signal) of the user.

[0230] In some embodiments, the PPG signal (one of the heart rate signals) can also be combined with the electrocardiogram waveform to determine more accurate user blood pressure and other human cardiovascular system-related biometric information through an algorithm. Exemplarily, the key module 100 can simultaneously collect the ECG waveform and the PPG signal of the user, calculate the time difference PPT between the two through an algorithm, and then obtain the blood pressure data of the user through a formula conversion.

[0231] It can be understood that, in the thickness direction of the key module 100, the first detection component 20 and the third detection component can have an overlapping portion. In this way, the arrangement of the devices of the key module 100 is more compact, which is conducive to arranging more functional devices in a smaller volume of the key module 100.

[0232] Exemplarily, the third region 4 can be arranged around the first region 1.

[0233] In some embodiments, the first electrode 221 can be formed by a physical vapor deposition (PVD) process. In this way, the first electrode 221 can have higher hardness, higher wear resistance, and higher corrosion resistance. In other embodiments, the first electrode 221 can also be formed by a diamond-like carbon (DLC) process or the like to obtain higher hardness.

[0234] In some embodiments, the first electrode 221 can be made of chromium or an alloy of chromium or the like.

[0235] In other embodiments, when the first electrode 221 is made of a transparent conductive material such as indium tin oxide (ITO) or the like, a portion of the first electrode 221 can be fixed to the outer surface 1b of the first area 1.

[0236] As shown in FIG. 13, when the key module 100 includes the bracket 60 and the circuit board 70, the electrocardiogram detection module 22 can further include a conductive member 222, which can be disposed between the cover plate 10 and the circuit board 70. The conductive member 222 can electrically connect the first electrode 221 and the circuit board 70 to transmit the electrical signal collected by the first electrode 221 to the circuit board 70. For example, the conductive member 222 can be located in the accommodation space 109.

[0237] It can be understood that, when the key module 100 further includes the conductive member 222, the collection path of the electrical signal of the user can include: the electrical signal of the user can be transmitted to the main board of the electronic device 1000 through the first electrode 221, the conductive member 222, the circuit board 70, and the flexible circuit board 80 in sequence.

[0238] In some embodiments, the conductive member 222 can be made of conductive silicone, a conductive spring, a conductive spring piece, a conductive wire, or the like.

[0239] In other embodiments, the cover plate 10 includes a conductive portion (not shown) made of a conductive material, the conductive portion is exposed to the cover plate 10, and the conductive portion is electrically connected to the first electrode 221 of the electrocardiogram detection module 22. The conductive portion can be electrically connected to the circuit board 70. The electrical signal of the user can be transmitted to the main board of the electronic device 1000 through the first electrode 221, the conductive portion, the conductive member 222, the circuit board 70, and the flexible circuit board 80 in sequence. In this way, the first electrode 221 can be entirely disposed on the top surface of the cover plate 10, without being connected to the bottom surface of the cover plate 10 through the side surface of the cover plate 10. The first electrode 221 has a smaller forming difficulty.

[0240] Exemplarily, the electronic device 1000 can include an electrocardiography (ECG) chip (not shown in the figure). The ECG chip can be located in the internal space 1003 of the housing 300. Exemplarily, the ECG chip can be fixed on the mainboard and electrically connected to the mainboard. The ECG chip can be electrically connected to the conductive part of the housing through the mainboard, the flexible circuit board 80 and the circuit board 70. The ECG chip can be used to process the electrical signal obtained by the housing, and then obtain the electrocardiogram waveform of the user.

[0241] In other embodiments, the electronic device 1000 can also include an electrocardiography chip for processing other types of electrocardiogram signals other than ECG. The electrocardiography chip can be used to process the electrical signal collected by the conductive part to obtain the electrocardiogram information of the user.

[0242] In some embodiments, when the second detection assembly 30 is arranged on the inner surface 2a of the second area 2, the first electrode 221 can also be partially arranged on the outer surface 2b of the second area 2. In this way, the area of the first electrode 221 can be set larger, and when the user contacts the top surface 101 of the cover plate 10, the electrical connection area between the first electrode 221 and the user can also be larger, which is conducive to the stability of the electrical connection between the user and the first electrode 221.

[0243] In other embodiments, when the first detection assembly 20 is an electrocardiography detection module 22, the third detection assembly can be an optical heart rate detection module 21. The present application does not make any limitation. The key module 100 can integrate more physiological parameter measurement modules. Exemplarily, when the first detection assembly 20 is an electrocardiography detection module 22, the first electrode 221 can be at least partially arranged on the outer surface 1b (not shown in the figure) of the first area 1.

[0244] It can be understood that when the first detection assembly 20 is an electrocardiography detection module 22, the first area 1 can not be arranged as a light-transmitting area. In other words, the material, color and light-transmitting properties of the first area 1 are not limited and can be selected according to the requirements. For example, the first area 1 can be made of a non-light-transmitting metal material, and the color of the first area 1 can be consistent with the color of the middle frame 310. When the key module 100 is installed on the middle frame 310, the outer surface 3101 of the middle frame 310 can have better appearance consistency.

[0245] In some embodiments, the same technical content as the key module 100 in the previous embodiments will not be repeated. FIG. 15 is a partial structure schematic view of another embodiment of the key module 100 shown in FIG. 4 from another angle.

[0246] As shown in FIG. 15, the key module can include a first detection component 20, a second detection component 30, and a third detection component. The first detection component 20 is an optical heart rate detection module 21, the second detection component 30 is a body fat detection module, and the third detection component can be an electrocardiogram detection module 22.

[0247] As shown in FIG. 3 and FIG. 15, the body fat detection module can include a second electrode 361, which can be disposed at least partially on the outer surface 2b of the second area 2. When the user needs to measure the body fat, the finger is placed on the outer surface 2b of the second area 2 to contact the second electrode 361, and the second electrode 361 can collect the electrical signal of the user.

[0248] Exemplarily, the second electrode 361 can be partially disposed on the top surface 101 of the cover plate 10, partially disposed on the side surface 103 of the cover plate 10, and partially disposed on the bottom surface 102 of the cover plate 10. The electrical connection mode of the second electrode 361 and the main board of the electronic device 1000 can refer to the electrical connection relationship between the first electrode 221 and the main board, which will not be described herein.

[0249] The number of the second electrode 361 can be one or two. For example, when the first detection component 20 is the electrocardiogram detection module 22, the number of the second electrode 361 of the body fat detection module can be one, and the first electrode 221 of the electrocardiogram detection module 22 can also participate in the body fat detection as an electrode for body fat detection, that is, the electrocardiogram detection module 22 and the body fat detection module can share the first electrode 221. In this way, one electrode for body fat detection can be saved, the area requirement of the cover plate 10 is smaller, which is conducive to reducing the area of the cover plate 10 and the miniaturization of the key module 100.

[0250] In some embodiments, an insulating structure 19 made of insulating material is arranged between the first electrode 221 and the second electrode 361 to insulate the first electrode 221 and the second electrode 361. In some embodiments, when the number of the second electrode 361 is two, the two second electrodes 361 are insulated. For ease of understanding, the first electrode 221, the second electrode 361, and the insulating structure 19 are schematically shown by different filling patterns in FIG. 15.

[0251] In other embodiments, when the first detection component 20 is the optical heart rate module, the number of the second electrode 361 is two, and the two electrodes contact the user to collect the electrical signal of the user.

[0252] Exemplarily, the electronic device 1000 can further include a chip (hereinafter referred to as a body fat chip) for processing the electrical signal collected by the body fat detection module. The body fat chip can be fixed on the mainboard and electrically connected to the mainboard. The body fat chip can be electrically connected to the body fat detection module through the mainboard and the circuit board 70. The body fat chip can be used to process the electrical signal collected by the body fat detection module to obtain the body fat data of the user. It can be understood that when the body fat detection module and the electrocardiogram detection module 22 share the first electrode 221, the first electrode 221 can also be electrically connected to the body fat chip.

[0253] Exemplarily, when the user wears the electronic device to measure the body fat, one finger simultaneously contacts the second area 2 and the third area 4, and the back of the electronic device 1000 can further be provided with a reference electrode, the reference electrode contacts the skin of the wrist of the user, and the first electrode 221, the second electrode 361 and the reference electrode can all be electrically connected to the body fat chip, and the body fat chip obtains the body fat data of the user according to the electrical signals collected by the three electrodes. In other embodiments, the user can also use two fingers to contact the second area 2 and the third area 4 respectively to measure the body fat.

[0254] It can be understood that by providing the body fat detection module, the key module 100 can be used for body fat detection, and the electronic device 1000 has the function of body fat detection. Integrating the body fat detection function on the key module 100, the key module 100 has the function of body fat detection while realizing the basic key function, which is conducive to the multifunctionalization of the electronic device 1000. In addition, integrating the key function and the body fat detection function on one module is conducive to the miniaturization of the electronic device 1000.

[0255] In other embodiments, the second detection assembly 30 can further include other functional devices with electrodes, and these functional devices can also share the first electrode 221 with the electrocardiogram detection module 22.

[0256] In some embodiments, the same technical content as the key module 100 in the foregoing embodiments will not be described again.

[0257] In some embodiments, the second detection assembly 30 can also be a camera. Exemplarily, the camera can be arranged on the inner surface 2a of the second area 2. It can be understood that the second area 2 of the cover plate 10 can be used to protect the camera.

[0258] Exemplarily, the second area 2 can be a light-transmitting area. In this way, the light outside the key module 100 can pass through the second area 2 and be accepted by the camera, and the camera can convert the collected light signal into an electrical signal.

[0259] Exemplarily, the signal collection path of the camera can include: external light can pass through the second area 2 of the cover plate 10, enter the containing space 109, pass through the light-transmitting piece 90 and be received by the camera. The camera converts the collected light signal into an electric signal, which is transmitted to the mainboard of the electronic device 1000 through the circuit board 70 and the flexible circuit board 80 in sequence.

[0260] Exemplarily, the electronic device 1000 can further include a chip (hereinafter referred to as a camera chip) for processing the electric signal generated by the camera. The camera chip can be fixed on the mainboard and electrically connected to the mainboard. The camera can be fixed on the circuit board 70 and electrically connected to the circuit board 70. The camera chip can be electrically connected to the camera through the mainboard and the circuit board 70. The camera chip can be used to process the electric signal of the camera module, and thus the information related to the external environment in which the key module 100 is located can be obtained.

[0261] It can be understood that by arranging the camera, the photographing function can be increased. The camera can also be used to identify the gestures of the user. The user can operate the electronic device 1000 through different gestures. For example, a specific gesture corresponds to different operations (including page turning, sliding down, starting, stopping, etc.) of the electronic device 1000. For another example, a specific gesture can also correspond to different applications of the electronic device 1000. The user can wake up different applications of the electronic device 1000 through different gestures.

[0262] In some embodiments, the camera can also be used to collect user identity information. For example, the camera can collect the facial features or fingerprint features of the user as the identity information of the user, which is used for starting the electronic device 1000.

[0263] In some embodiments, the electronic device 1000 can have an archiving function of physiological health parameters of different users. In order to archive and detect the health of the user for a long time, the health of family and friends can also be archived and detected. When the key module 100 is used to detect heart rate information or electrocardiogram information, the electronic device 1000 can confirm the identity information of the measurer according to the face or fingerprint features recognized by the camera, and archive the health parameters of different people measured by the first detection assembly 20.

[0264] In some embodiments, the front side of the electronic device 1000 can further be provided with a second camera, and the user can take a selfie through the front camera. The key module 100 provided on the side 1004 of the electronic device 1000 can be used to identify the user's gestures, and the user can control the front camera to take a photo through a specific gesture. It can be understood that the camera for identifying gestures is provided on the side 1004 of the electronic device 1000, and when the user takes a selfie, the camera provided on the front side of the electronic device 1000 will not capture the user's gestures into the photo, and the user's experience is better. Moreover, when the electronic device 1000 is a watch or a bracelet, the camera for identifying gestures is provided on the side 1004 of the electronic device 1000, and the user does not need to take off the watch or the bracelet when taking a photo through a gesture, and the user's experience is better.

[0265] In some embodiments, when the camera of the second detection assembly 30 can be used to take an outdoor photo, the second detection assembly 30 is installed on the side 1004 of the electronic device 1000, and when the electronic device 1000 is a watch or a bracelet, the user can raise his hand to direct the second detection assembly 30 towards the object to be photographed, and the user can complete the photographing without taking off the electronic device 1000.

[0266] In some embodiments, the second detection assembly 30 can also be a fingerprint detection module. For example, the fingerprint detection module can be a capacitive fingerprint module, or an ultrasonic fingerprint module.

[0267] For example, the fingerprint detection module can be provided on the inner surface 2a of the second area 2 of the cover plate 10. It can be understood that the fingerprint detection module does not need to collect external ambient light, and the second area 2 of the cover plate 10 can be made of a light-proof material. For example, the second area 2 of the cover plate 10 can be made of the same color and material as the middle frame 310, so that the side 1004 of the electronic device 1000 has better appearance consistency.

[0268] For example, when the fingerprint detection module is an ultrasonic fingerprint module, the ultrasonic fingerprint module can include a transmitter and a receiver. When the user performs fingerprint identification, the user can place his finger on the second area 2 of the cover plate 10, the transmitter can emit ultrasonic waves, the ultrasonic waves can pass through the second area 2 to the user's finger position, and the ultrasonic waves reflected by the user's finger can pass through the second area 2 again and be received by the receiver. The receiver can convert the collected ultrasonic information reflected by the user's finger into an electrical signal.

[0269] In some embodiments, the fingerprint detection module can be fixed to the circuit board 70 and electrically connected to the circuit board 70. For example, the transmitter and the receiver can be arranged on the circuit board 70 at intervals.

[0270] Exemplarily, the electronic device 1000 can further include a chip (hereinafter referred to as a fingerprint chip) for processing the electrical signal generated by the fingerprint detection module. The fingerprint chip can be fixed on the mainboard and electrically connected to the mainboard. The fingerprint chip can be electrically connected to the fingerprint detection module through the mainboard and the circuit board 70. The fingerprint chip can be used to process the electrical signal of the fingerprint detection module, and thus the fingerprint information can be obtained. The electronic device 1000 can compare the recognized fingerprint information with the pre-stored fingerprint information to realize identity recognition.

[0271] It can be understood that, by arranging the fingerprint detection module, the electronic device 1000 can have an identity recognition function.

[0272] In some embodiments, the electronic device 1000 can have an archiving function of physiological health parameters of different users. In order to facilitate the user to not only archive the health of himself for a long time, but also archive the health of family and friends. When the key module 100 is used to detect heart rate information or electrocardio information, the electronic device 1000 can confirm the identity information of the measurer according to the fingerprint information recognized by the fingerprint detection module, and archive the health parameters of different people measured by the first detection assembly 20.

[0273] In some embodiments, the user can correspond the function of the electronic device 1000 with the fingerprint of different fingers of himself. The electronic device 1000 can confirm the function that the user currently wants to wake up according to the fingerprint information recognized by the fingerprint detection module. For example, when the user sets the fingerprint of his middle finger as the switch signal of starting the heart rate or electrocardio measurement of the key module 100, the user contacts the middle finger to the cover plate 10, and when the fingerprint detection module recognizes the fingerprint information of the middle finger, the first detection assembly 20 of the key module 100 starts the heart rate or electrocardio measurement.

[0274] In some embodiments, the second detection assembly 30 can also be an infrared emitter. The infrared emitter can be arranged on the inner surface 2a of the second area 2. The infrared emitter can be used to emit infrared rays, and the infrared rays emitted by the infrared emitter can penetrate the second area 2 to the outside of the key module 100.

[0275] It can be understood that, the infrared emitter does not need to collect external environmental light, and the second area 2 of the cover plate 10 can be made of light-proof material. For example, the second area 2 of the cover plate 10 can be made of the same color and material as the middle frame 310, so that the side surface 1004 of the electronic device 1000 can have better appearance consistency.

[0276] In some embodiments, the infrared emitter can be fixed on the circuit board 70 and electrically connected to the circuit board 70. Exemplarily, the infrared emitter can include a light source and a driving circuit. The light source is electrically connected to the driving circuit. The light source and the driving circuit can be arranged on the circuit board 70 with a spacing.

[0277] Exemplarily, the electronic device 1000 can further include a chip (hereinafter referred to as an infrared chip) for the infrared emitter to emit infrared rays. The infrared chip can be fixed on the mainboard and electrically connected to the mainboard. The infrared chip can be electrically connected to the infrared emitter through the mainboard and the circuit board 70. The infrared chip can be used to deliver an infrared emission instruction to the infrared emitter. The infrared emission instruction is transmitted to the driving circuit through the mainboard and the circuit board 70, and the driving circuit drives the infrared emitter to emit infrared rays.

[0278] It can be understood that the key module 100 is provided with the infrared emitter, and the electronic device 1000 can have an infrared remote control function.

[0279] In some embodiments, the second detection component 30 can also be a distance sensor. Exemplarily, the distance sensor can be an optical distance sensor, an infrared distance sensor, an ultrasonic distance sensor, etc. The present application does not limit the type of distance sensor.

[0280] Taking the infrared distance sensor as an example, the infrared distance sensor can include an infrared emitter tube and an infrared receiver tube. Exemplarily, the infrared emitter tube and the infrared receiver tube can be arranged at intervals on the circuit board 70 and electrically connected to the circuit board 70, respectively. When the user needs to measure the distance, the infrared emitter tube is used to emit infrared rays. The infrared rays can penetrate the second area 2 to the outside of the key module 100 and be reflected by the blocking object after encountering the blocking object. The reflected infrared rays can be received by the infrared receiver tube, and the infrared receiver tube can convert the received infrared light signal into an electrical signal.

[0281] In some embodiments, when the second detection component 30 can include an infrared distance sensor and an infrared emitter with an infrared remote control function, the infrared distance sensor and the infrared emitter of the infrared remote control can share one infrared emitter tube.

[0282] Exemplarily, the electronic device 1000 can further include a chip (hereinafter referred to as a distance chip) for controlling the distance sensor to measure the distance. The distance chip can be fixed on the mainboard and electrically connected to the mainboard. The distance chip can be electrically connected to the distance sensor through the mainboard and the circuit board 70. The distance chip can be used to send a distance detection instruction to the distance sensor and also be used to analyze the electrical signal generated by the distance sensor to obtain distance information. Taking the infrared distance sensor as an example, the distance chip can calculate the distance between the infrared emitter tube and the infrared receiver tube according to the time difference between the infrared emitter tube emitting infrared rays and the infrared receiver tube receiving infrared rays. This distance is approximately the distance between the electronic device 1000 and the blocking object.

[0283] It can be understood that the key module 100 is provided with the distance sensor, and the electronic device 1000 can have a distance detection function. The distance detection function can be applied to different scenes in the life of the user. The following will introduce several specific application scenarios of the distance sensor.

[0284] In some embodiments, the electronic device 1000 can have a fall detection function by providing the distance sensor.

[0285] In some embodiments, the electronic device 1000 can have a height measurement function by providing the distance sensor. For example, when the user needs to measure the height, the electronic device 1000 can be held to the top of the head position, so that the cover plate 10 of the key module 100 can be roughly consistent with the height of the top of the head, and at the same time, the cover plate 10 is directed to the bottom side. After the infrared emitting tube emits infrared rays, the infrared rays return to be received by the infrared receiving tube after meeting the ground. The distance chip can analyze the electrical signal generated by the distance sensor to obtain the distance information between the infrared emitting tube and the bottom surface to realize height measurement.

[0286] In some embodiments, the electronic device 1000 can also have a function of detecting whether there is an obstacle nearby by providing the distance sensor. For example, taking the infrared distance sensor as an example, when the infrared emitting tube emits infrared rays, the infrared receiving tube does not receive the reflected infrared rays, which means that there is no obstruction nearby. This function can help some visually impaired users to travel.

[0287] In some embodiments, when the electronic device 1000 is provided with a motor, the distance chip can be electrically connected to the motor. The motor can prompt the user whether there is an obstruction nearby according to the detection result of the distance sensor. For example, when the distance chip detects that there is an obstruction within 3m nearby through the distance sensor, the distance chip can send a vibration instruction to the motor to remind the user that there is an obstruction nearby.

[0288] In some embodiments, the same technical content of the key module 100 in the foregoing embodiments will not be repeated.

[0289] In some embodiments, the second detection assembly 30 of the key module 100 can include two or more of the camera, the ambient light sensor 31, the fingerprint detection module, the infrared emitter, and the distance sensor. It can be understood that the second detection assembly 30 can include multiple functional devices, and the multiple functional devices can realize a function that a single functional device does not have, or improve the measurement accuracy of one of the functional devices. The following will introduce several combination modes of the second detection assembly 30 including multiple functional devices for example.

[0290] FIG. 16 is a structural schematic diagram of another embodiment of the table body 1001 shown in FIG. 1.

[0291] Exemplarily, the second detection assembly 30 is an ambient light sensor 31 and a camera. The key module 100 can count the sunshine time through the light intensity detected by the ambient light sensor 31. However, when the user enters the indoor or the cover plate 10 of the key module 100 is blocked by clothes, the light intensity will also be weakened, at this time, whether it is caused by clothes blocking or being in the indoor can be identified through the camera, so as to adjust the statistical result of the ambient light sensor, so that the key module 100 counts the sunshine time, and the result is more accurate.

[0292] In some embodiments, when the second detection assembly 30 includes two or more of a camera, an ambient light sensor 31, a fingerprint detection module, an infrared emitter, and a distance sensor, the second area 2 can include a plurality of sub-areas 29 arranged at intervals, and the functional devices included in the second detection assembly 30 can be arranged one-to-one corresponding to the plurality of sub-areas 29. The plurality of sub-areas 29 arranged at intervals can be connected through the connecting area 3.

[0293] Exemplarily, when the second detection assembly 30 is an ambient light sensor 31 and a camera, the second area 2 can include two sub-areas 29 arranged at intervals, and the ambient light sensor 31 and the camera are arranged one-to-one corresponding to the two sub-areas 29. Exemplarily, the ambient light sensor 31 can be arranged in the first sub-area 29 from left to right, and the camera can be arranged in the second sub-area 29.

[0294] Exemplarily, in the plurality of sub-areas 29, a part of the sub-areas 29 can be arranged as a light-transmitting area, and the other part can be arranged as a non-light-transmitting area, so as to adapt to the needs of different functional devices for collecting light.

[0295] Exemplarily, the shapes and sizes of the plurality of sub-areas 29 can be different, and the shape of the sub-area 29 can be designed according to the corresponding functional device.

[0296] Exemplarily, when the plurality of sub-areas 29 have different needs for light transmission performance, the plurality of sub-areas 29 can be prepared in advance, and then fixedly connected with other areas of the cover plate 10.

[0297] FIG. 17 is a structural schematic diagram of another embodiment of the table body 1001 shown in FIG. 1.

[0298] It can be understood that in the first detection assembly 20 and the second detection assembly 30, some functional devices can be combined so that the key module 100 can have new functions. The functional devices that need to be combined can be arranged adjacent to each other.

[0299] Exemplarily, the second detection component 30 can be an ambient light sensor 31, a camera and a fingerprint detection module. The ambient light sensor 31, the camera and the fingerprint detection module can be arranged along the length direction of the key module 100. The camera can be located between the ambient light sensor 31 and the fingerprint detection module. The ambient light sensor 31 and the camera can be arranged adjacently, and the joint action of the two can improve the accuracy of sunlight detection. The fingerprint detection module can be arranged on the side of the camera away from the ambient light sensor, or arranged on the side of the ambient light sensor 31 away from the camera.

[0300] Exemplarily, the fingerprint detection module can be arranged adjacently to the first detection component 20. When the key module 100 performs health detection, the fingerprint detection module can be used for identity recognition. The user only needs to place the finger used for identity recognition on the cover plate, so that the finger can cover the first area 1 and the second area 2 at the same time, and the detection can be completed by one key. The user has a better use experience.

[0301] FIG. 18 is a structural schematic diagram of another embodiment of the table body 1001 shown in FIG. 1.

[0302] As shown in FIG. 18, the outer surface 2b of the second area 2 can be provided with some decorative patterns, so that the appearance of the key module 100 is better. In FIG. 18, the decorative patterns of the second area 2 are schematically shown by the "LOGO" word.

[0303] Exemplarily, when the second detection component 30 can be an ultrasonic fingerprint module or an infrared emitter and the like, which does not need to collect ambient light, the decorative patterns will not affect the functional use of the second detection component 30.

[0304] In other embodiments, the first detection component 20 can also be a functional device other than the optical heart rate detection module 21 and the electrocardiogram detection module 22. The second detection component 30 can also be a functional device other than the camera, the ambient light sensor 31, the fingerprint detection module, the infrared emitter, the distance sensor and the body fat detection module. For example, a loudspeaker, a microphone and the like.

[0305] It should be understood that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other, and any combination of the features in different embodiments is also within the protection scope of the present application, that is, the above-described multiple embodiments can also be combined according to actual needs.

[0306] It can be understood that all the above drawings are exemplary diagrams of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not a limitation on the actual product of the present application.

[0307] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A key module (100), characterized in that, The key module (100) is used for detecting user operation on the key module (100). The key module (100) is arranged on the side surface (1004) of the electronic device (1000).

2. The key module (100) according to claim 1, characterized in that The first detection component (20) is an optical heart rate detection module (21), and the optical heart rate detection module (21) comprises light receivers (212) and light emitters (211) arranged at intervals.

3. The key module (100) according to claim 1 or 2, characterized in that The first area (1) is a light transmission area, and the light transmission area is used for transmitting light emitted by the light emitters (211). The key module (100) further comprises an optical shielding structure (50), and the optical shielding structure (50) is located between the light emitters (211) and the light receivers (212).

4. The key module (100) according to claim 3, characterized in that The key module (100) further comprises a Fresnel film (40), and the Fresnel film (40) is arranged between the light emitters (211) and the first area (1).

5. The key module (100) according to claim 3 or 4, characterized in that The key module (100) further comprises a support (60) and a circuit board (70), the cover plate (10) is arranged on a first surface (61) of the support (60), the circuit board (70) is arranged on a second surface (62) of the support (60), and the first surface (61) and the second surface (62) are arranged opposite to each other.

6. The key module (100) according to claim 1 or 2, characterized in that The first detection component (20) is an optical heart rate detection module (21), and the optical heart rate detection module (21) comprises light receivers (212) and light emitters (211) arranged at intervals, and the light receivers (212) and the light emitters (211) are located between the cover plate (10) and the circuit board (70).

7. The key module (100) according to claim 6, characterized in that The second detection component (30) is located between the cover plate (10) and the circuit board (70).

8. The key module (100) according to claim 6 or 7, characterized in that The key module (100) further comprises a light transmission piece (90), the light transmission piece (90) is used for filling an accommodating space (109) formed by the circuit board (70), the support (60) and the cover plate (10), and the light transmission piece (90) is connected with the first detection component (20), the second detection component (30) and the circuit board (70). ​ 9. The key module (100) according to any one of claims 6 to 8, characterized in that, The support (60) comprises a side wall (63) and a baffle (64), the side wall (63) is annular, the side wall (63), the circuit board (70) and the cover plate (10) enclose a containing space (109), the baffle (64) connects the inner side (633) of the side wall (63), the cover plate (10) and the circuit board (70), the baffle (64) and the side wall (63), the first area (1), the circuit board (70) enclose a first containing space (109), the baffle (64) and the side wall (63), the second area (2), the circuit board (70) enclose a second containing space (109); The first detection assembly (20) is arranged in the first containing space (109), and the second detection assembly (30) is arranged in the second containing space (109).

10. The key module (100) according to any one of claims 6 to 8, characterized in that, The circuit board (70) comprises a first part (76) and a second part (77), the first part (76) and the second part (77) are arranged along the length direction of the cover plate (10), and the first part (76) and the second part (77) are arranged at an included angle; The first detection assembly (20) is arranged in the first part (76), and the second detection assembly (30) is arranged in the second part (77).

11. The key module (100) according to any one of claims 6 to 10, characterized in that The first area (1) and the second area (2) are arranged along the length direction of the cover plate (10).

12. The key module (100) according to any one of claims 1 to 11, characterized in that The key module (100) further comprises a pressure sensing circuit (98) and a pressure sensing assembly (99), the pressure sensing assembly (99) is arranged on the inner side of the cover plate (10), and the pressure sensing circuit (98) is fixed to the pressure sensing assembly (99). When the cover plate (10) is subjected to pressure and the pressure sensing assembly (99) is deformed, the pressure sensing circuit (98) is used for detecting the deformation of the pressure sensing assembly (99).

13. The key module (100) according to claim 1 or 2, characterized in that The first detection assembly (20) is an electrocardio detection module (22), and the electrocardio detection module (22) comprises a first electrode (221), and the first electrode (221) is at least partially arranged on the outer surface (1b) of the first area (1).

14. The key module (100) according to claim 1 or 2, characterized in that, The key module (100) further comprises a third detection assembly, and the cover plate (10) further comprises a third area (4) for arranging the third detection assembly.

15. The key module (100) according to claim 14, characterized in that The first detection assembly (20) is an optical heart rate detection module (21), and the third detection assembly is an electrocardio detection module (22), the electrocardio detection module (22) comprises a first electrode (221), and the first electrode (221) is at least partially arranged on the outer surface (4b) of the third area (4).

16. The key module (100) according to claim 13 or 15, characterized in that The key module (100) further comprises a support (60) and a circuit board (70), the cover plate (10) is arranged on the first face (61) of the support (60), the circuit board (70) is arranged on the second face (62) of the support (60), and the first face (61) and the second face (62) are arranged opposite to each other. The electrocardio detection module (22) further comprises a conductive piece (222) arranged between the cover plate (10) and the circuit board (70) and electrically connected between the first electrode (221) and the circuit board (70).

17. The key module (100) according to claim 13 or 15, characterized in that The second detection assembly (30) is a body fat detection module, and the body fat detection module comprises a second electrode (361) arranged at least partially on the outer surface (2b) of the second area (2). The first electrode (221) and the second electrode (361) are provided with an insulation structure (19).

18. An electronic device (1000), characterized by, The electronic device (1000) is a watch or a bracelet.

19. The electronic device (1000) according to claim 18, characterized by, The electronic device (1000) further comprises a screen (200), and the shell (300) comprises a middle frame (310) and a back cover (320), the middle frame (310) is connected between the screen (200) and the back cover (320), and the key module (100) is mounted on the outer surface (3101) of the middle frame (310).

20. The electronic device (1000) according to claim 18 or 19, characterized by, The electronic device (1000) further comprises a motor arranged in the shell (300), and the motor vibrates according to the data detected by the key module (100).

21. The electronic device (1000) according to any one of claims 18-20, characterized by, ​

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