Detection module and wearable device

Abstract

The present application relates to the technical field of electronic devices, and discloses a detection module and a wearable device. The detection module comprises a bracket, a cover plate, a first circuit structure, a second circuit structure, and a button rod; the cover plate is fixed to the bracket, and comprises a light-transmitting region; the first circuit structure comprises a first circuit board and a PPG sensor; the first circuit board is fixed to the bracket; the PPG sensor is arranged on the side of the first circuit board facing the cover plate, and is arranged opposite to the light-transmitting region; a first end of the button rod is fixedly connected to the first circuit board; the second circuit structure comprises a second circuit board, a micro switch and a pressure sensor; the micro switch is arranged on the second circuit board, and is arranged facing a second end of the button rod; the button rod is used for triggering the micro switch during movement; and the pressure sensor is electrically connected to the second circuit board, and is used for measuring a pressing force on the button rod. The detection module implements both a health detection function and a physical button function, which is beneficial to improving the appearance and integration of the wearable device.

Description

A detection module and wearable device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411605119.1, filed on November 11, 2024, entitled "A Detection Module and Wearable Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electronic equipment technology, and in particular to a detection module and a wearable device. Background Technology

[0004] With the rapid development and widespread adoption of wearable devices such as smartwatches and smart bracelets, their functions are becoming increasingly comprehensive. For example, existing smartwatches not only have basic time and date display functions but can also record exercise data, perform health monitoring, and communicate with the internet. Health monitoring primarily includes the detection of vital signs such as heart rate, blood oxygen saturation, and electrocardiogram (ECG). Currently, some smartwatches are equipped with a health monitoring button, allowing users to quickly activate the health monitoring function. While this design improves the efficiency and timeliness of health monitoring, the health monitoring button occupies space on the side bezel of the smartwatch, and its layout relative to existing buttons needs to be considered, which is detrimental to improving the smartwatch's appearance and overall integration. Summary of the Invention

[0005] This application provides a detection module and a wearable device. The detection module can reuse health detection and physical buttons, thereby improving the appearance and integration of the wearable device.

[0006] In a first aspect, this application provides a detection module, which includes a bracket, a cover plate, a first circuit structure, a second circuit structure, and a button lever. The cover plate is fixed to the bracket and includes a light-transmitting area. The first circuit structure includes a first circuit board and a PPG sensor. The first circuit board is fixed to the bracket, the PPG sensor is disposed on the side of the first circuit board facing the cover plate, and the PPG sensor is disposed opposite to the light-transmitting area so that the PPG sensor can send or receive light signals through the light-transmitting area. The button lever includes a first end and a second end disposed opposite to each other. The first end of the button lever is fixedly connected to the first circuit board. The second circuit board includes a second circuit board, a micro switch, and a pressure sensor. The micro switch is disposed on the second circuit board and is disposed facing the second end of the button lever. The button lever can be used to trigger a movable switch when moved. The pressure sensor is electrically connected to the second circuit board and is used to detect the pressing force of the button lever. The pressing force of the button lever refers to the pressing force experienced by the button lever when it is pressed. This pressing force is applied by the user to the cover plate and transmitted from the cover plate to the button lever sequentially through the bracket and the first circuit board. If the pressing force of the button lever is within the threshold range, it indicates that the user's finger is in good contact with the cover plate and the pressing force is moderate, which can ensure the detection accuracy of the PPG sensor.

[0007] In this application, the detection module can not only detect the user's health data, but also realize the function of a physical button based on a microswitch. Therefore, the detection module has the dual functions of health monitoring and physical button, thereby improving the integration of wearable devices that use this detection module. Furthermore, compared with wearable devices in the prior art that have separate detection buttons, the number of buttons in the wearable device is relatively small, thus improving the appearance quality of the wearable device.

[0008] In some implementations, the detection module includes an elastic sheet connected to the button lever, and a pressure sensor is fixed to the elastic sheet, so that the pressure sensor can detect the pressing force of the button lever through the elastic sheet.

[0009] In some implementations, a push-button lever can be used to deform an elastic sheet during movement, and a pressure sensor can detect the pressing force of the push-button lever based on the deformation of the elastic sheet. The pressure sensor is a strain gauge type pressure sensor, which includes one or more strain gauges. The deformation of the elastic sheet causes the strain gauge to deform synchronously, and the resistance value of the strain gauge changes accordingly with its deformation. The change in the resistance value of the strain gauge further causes a change in the output signal of the pressure sensor.

[0010] In some implementations, the elastic sheet extends along a first direction, and a first end of the elastic sheet is fixedly connected to the button lever. The elastic sheet includes a first surface disposed opposite to the first circuit structure, and a pressure sensor is fixed to the first surface of the elastic sheet. This arrangement allows the first surface of the elastic sheet to undergo relatively significant deformation as the button lever moves, thereby helping the pressure sensor to more sensitively detect the pressing force of the button lever.

[0011] In some implementations, a retaining ring is provided at the first end of the elastic sheet, and a fixing groove is provided on the outer wall of the button rod. The retaining ring is engaged with the fixing groove, thereby fixing the elastic sheet and the button rod together.

[0012] In some implementations, the second circuit board is a flexible circuit board, which includes a first connecting portion and a second connecting portion connected together. The first connecting portion is located at the second end of the button lever, and a micro switch is disposed on the side of the first connecting portion facing the button lever. The second connecting portion is disposed opposite to the elastic sheet, and a pressure sensor is attached to the second connecting portion. In this way, the pressure sensor can be directly electrically connected to the second circuit board without the aid of other conductive structures, thereby simplifying the structure of the detection module.

[0013] In some implementations, the detection module also includes a retaining plate, which can be used to support the micro switch so that the micro switch can withstand the pressing force of the button lever.

[0014] In some implementations, the second circuit board further includes a third connection portion connected to the first connection portion, the third connection portion being used for electrical connection with the host circuit board of the wearable device.

[0015] In some embodiments, the first connecting portion includes a first sub-plate, a second sub-plate, and a bending portion. The first sub-plate and the second sub-plate are opposite to each other and spaced apart, and the bending portion connects the first sub-plate and the second sub-plate. The first sub-plate is disposed at the second end of the button lever, and the side of the first sub-plate facing the button lever can be used to mount a micro switch. The second sub-plate can be used to connect the second connecting portion and the third connecting portion. At least a portion of the fixing plate is disposed between the first sub-plate and the second sub-plate to support the first sub-plate and the micro switch mounted on the first sub-plate.

[0016] In some implementations, the second circuit structure further includes a second reinforcing plate, which is fixed to the side of the first sub-board facing the second sub-board. The second reinforcing plate can reinforce and support the first sub-board, thereby facilitating the mounting of the micro switch on the surface of the first sub-board.

[0017] In some implementations, a pressure sensor is fixedly connected to the side of the micro switch facing away from the button lever. The pressing force of the button lever is transmitted to the micro switch through a second end of the button lever, and the pressure sensor can detect the pressing force of the button lever by detecting the force applied to the micro switch.

[0018] In some implementations, the micro switch is positioned to contact the second end of the button lever to ensure that the pressing force of the button lever can be reliably transmitted to the micro switch.

[0019] In some implementations, the detection module further includes a mounting plate to support the microswitch, enabling it to withstand the pressure applied by the button lever. A pressure sensor is fixed to the mounting plate. When the button lever presses the microswitch, the mounting plate also experiences the same pressure applied by the microswitch. Under this pressure, the mounting plate deforms to a certain extent, and the pressure sensor can detect the pressure applied by the button lever based on this deformation.

[0020] In some implementations, the second circuit board is a flexible circuit board, including a first sub-board, a second sub-board, and a bending portion. The first and second sub-boards are opposite to each other and spaced apart, and the bending portion connects the first and second sub-boards. The first sub-board is disposed at the second end of the button lever, and the side of the first sub-board facing the button lever can be used to mount a micro switch. The second sub-board is located on the side of the first sub-board facing away from the button lever. The micro switch is disposed on the side of the first sub-board facing the button lever. A fixing plate is supported on the side of the first sub-board facing the second sub-board. The fixing plate includes a first surface facing away from the first sub-board, and a pressure sensor is disposed on the first surface of the fixing plate and attached to the first sub-board. This reduces the difficulty of electrical connection between the pressure sensor and the second circuit board, simplifies the structure of the second circuit board, and reduces the size of the second circuit board and the entire second circuit structure.

[0021] Secondly, this application also provides a wearable device, which includes a housing and a detection module as described in any of the embodiments of the first aspect. The outer wall of the housing is provided with a mounting groove, through which the detection module is mounted to the wearable device. The detection module enables the reuse of health monitoring and physical button functions, resulting in a high degree of integration for the wearable device. Furthermore, compared to existing wearable devices with separate detection buttons, this wearable device has a relatively smaller number of buttons, thus improving its appearance.

[0022] In some implementations, the wearable device includes a processor that, upon detecting that a microswitch has been triggered, controls the wearable device to perform a first operation. This first operation includes activating a function of the wearable device and controlling the display screen to show the interface for that function. Based on this, the detection module can be viewed as a shortcut key for the wearable device.

[0023] In some implementations, the mounting slot has a first through hole communicating with the interior of the housing. A button lever is slidably disposed in the first through hole, with its first end located within the mounting slot and its second end located inside the housing. A bracket, a cover plate, and at least a portion of the first circuit structure are disposed within the mounting slot, with the bracket slidably connected to the mounting slot. A second circuit structure is disposed inside the housing. The module comprised of the cover plate, bracket, first circuit structure, and button lever is movable relative to the mounting slot; therefore, this module can be considered as a button that can be triggered by a user's press. The second circuit structure is fixed inside the housing. When the button lever is pressed, a pressure sensor detects the pressing force, and a microswitch is triggered by the button lever when it reaches a certain travel distance.

[0024] In some implementations, the detection module further includes a fixing plate, which comprises a first plate, a second plate, and a third plate. The second and third plates are respectively connected to opposite ends of the first plate and are arranged opposite to each other. The first plate is used to support the micro switch, and the second and third plates are each provided with a latch. The inner wall of the housing is provided with hooks corresponding to the two latches. The latches of the second and third plates engage with the corresponding hooks, thus achieving relative fixation between the fixing plate and the middle frame.

[0025] In some implementations, a mounting bracket is provided inside the housing, and the second circuit structure is disposed within the mounting bracket. At least a portion of the mounting bracket supports the side of the microswitch facing away from the button lever. Using this design, the second circuit structure can be more securely mounted inside the housing, and the mounting bracket can be equipped with conductive components electrically connected to the main circuit board, thus allowing for a more simplified structure of the second circuit board.

[0026] In some implementations, the detection module includes a sealing ring disposed between the outer wall of the button lever and the inner wall of the first through hole, thereby forming a seal at the first through hole and reducing the risk of external moisture, dust, etc. entering the housing through the first through hole.

[0027] In some implementations, the mounting slot is provided with a second through hole communicating with the interior of the housing, through which the first circuit board is electrically connected to the interior of the host. Exemplarily, the first circuit board is a flexible circuit board, comprising a board body and an electrical connection portion. The board body is used to mount the PPG sensor, and the electrical connection portion is connected to one end of the board body and extends into the interior of the housing through the second through hole.

[0028] In some implementations, the housing includes a rear shell. A first electrode is disposed on the surface of the cover facing away from the support, and a second electrode is disposed on the surface of the rear shell facing away from the interior of the housing. The first and second electrodes are used to detect electrical signals from different parts of the user's body. The processor can acquire the user's electrocardiogram (ECG) data based on the electrical signals from the first and second electrodes.

[0029] In some implementations, the processor acquires the pressure applied to the button lever. If the pressure is determined to be within a threshold range, the processor calculates the user's blood pressure data based on the detection signal from the PPG sensor and the electrical signals from the first and second electrodes. A pressure within the threshold range indicates good contact between the user's finger and the cover plate, and that the pressure applied is appropriate; in this case, the acquired blood pressure data will be more accurate. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the structure of a wearable device provided in an embodiment of this application;

[0031] Figure 2 is a partial structural diagram of the main body provided in an embodiment of this application;

[0032] Figure 3 is a partial exploded view of the wearable device provided in an embodiment of this application;

[0033] Figure 4 is a schematic diagram of the structure of the middle frame provided in an embodiment of this application;

[0034] Figure 5 is a schematic diagram of the structure of a detection module provided in an embodiment of this application;

[0035] Figure 6 is a partial exploded view of the detection module shown in Figure 5;

[0036] Figure 7 is a schematic diagram of the support structure of the detection module shown in Figure 6;

[0037] Figure 8 is a schematic diagram of the first circuit structure of the detection module shown in Figure 6;

[0038] Figure 9 is a schematic diagram of the second circuit structure of the detection module shown in Figure 6;

[0039] Figure 10 is a cross-sectional view of the assembly structure of the detection module and the middle frame shown in Figure 5;

[0040] Figure 11 is a schematic diagram of another detection module provided in an embodiment of this application;

[0041] Figure 12 is an exploded view of a partial structure of the detection module shown in Figure 11;

[0042] Figure 13 is an exploded view of a partial structure of the detection module shown in Figure 11;

[0043] Figure 14 is a schematic diagram of the structure of the second circuit board of the detection module shown in Figure 11;

[0044] Figure 15 is a cross-sectional view of the assembly structure of the detection module and the middle frame shown in Figure 11.

[0045] Figure Descriptions: 1000 - Wearable device; 1100 - Main body; 1110 - Housing; 1111 - Middle frame; 11111 - Mounting slot; 111111 - First through hole; 111112 - Guide block; 111113 - Second through hole; 11112 - Boss; 11113 - Hook; 11114 - Protrusion; 111141 - Fixing post; 1112 - Back cover; 1120 - Display screen; 1200 - Fixing strap; 100 - Operation button; 200 - Detection module; 210 - Bracket; 211 - First side of bracket; 212 - Second side of bracket; 213 - Mounting wall; 2131 - First opening; 2132 - Second opening; 214-First groove; 215-Second groove; 2151-Slot; 2152-Allowing groove; 216-First colloid; 2161-First clearance hole; 217-Second colloid; 2171-Second clearance hole; 220-Cover plate; 221-Light-transmitting area; 222-Light-shielding area; 230-First circuit structure; 231-First circuit board; 2311-Board body; 2312-Electrical connection part; 232-PPG sensor; 2321-Light emitter; 2322-Photosensor; 233-First conductive element; 234-First reinforcing plate; 240-Second circuit structure; 241-Second circuit board; 24111-First connecting part; 24111-First sub-board; 24112-Second sub-board; 24113-Bending part; 2412-Second connecting part; 2413-Third connecting part; 242-Micro switch; 243-Pressure sensor; 244-Second reinforcing plate; 250-Button lever; 251-First end of button lever; 252-Second end of button lever; 253-Sealing ring; 254-Slot; 255-Fixing slot; 260-Fresnel diaphragm; 260a-First Fresnel diaphragm; 260b-Second Fresnel diaphragm; 270-Fixing plate; 271-First plate body; 2711-First surface of the first plate body; 272-Second plate body; 2721-Bayonet; 273-Third plate body; 280-Snap ring; 290-Elastic plate; 291-First end of elastic plate; 292-Second end of elastic plate; 293-Snap ring; 294-Fixing ring; 295-First surface of elastic plate. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are only for illustrating relative positional relationships and do not represent actual scale.

[0047] It should be noted that specific details are set forth in the following description to facilitate understanding of this application. However, the embodiments of this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the embodiments of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0048] The wearable device provided in this application can be a portable device, or a device that can be integrated into a user's clothing or accessories. The wearable device has computing capabilities and can connect to mobile phones and various terminal devices. For example, the wearable device can be a smartwatch, smart bracelet, fitness tracker, smart wristband, accessory, etc.

[0049] Figure 1 is a schematic diagram of a wearable device 1000 provided in an embodiment of this application. The wearable device 1000 in the embodiment shown in Figure 1 is illustrated using a smartwatch as an example. The wearable device 1000 includes a main body 1100 and a fixing strap 1200. The fixing strap 1200 is connected to both sides of the main body 1100 and can be wrapped around the user's wrist, arm, leg, or other parts of the body to fix the wearable device 1000 to the user's body. The fixing strap 1200 and the main body 1100 can be fixedly connected or detachably connected, and this application does not limit this. In the example where the fixing strap 1200 and the main body 1100 are detachably connected, the user can replace the fixing strap 1200 according to usage needs or preferences, thereby helping to expand the application scenarios of the wearable device 1000.

[0050] In this embodiment of the application, the main body 1100 can be approximately circular, rectangular, or other polygonal in shape. This application does not impose any restrictions on this. Figure 1 shows a case where the main body 1100 is circular. It is easy to understand that when the wearable device 1000 is a smartwatch or bracelet, the main body 1100 of the wearable device 1000 is the watch head, and the fixing strap 1200 of the wearable device 1000 is the watch strap.

[0051] In some embodiments, the main body 1100 includes a housing 1110 and a display screen 1120, the display screen 1120 being fixedly connected to one side of the housing 1110 to seal the interior of the housing 1110. The interior of the housing 1110 can be used to accommodate various functional modules and electronic components of the wearable device 1000, such as, but not limited to, a host circuit board, processor, battery, charging management module, communication module, sensor module, audio module, speaker, receiver, microphone, etc., to enable the wearable device 1000 to perform multiple functions.

[0052] The processor is electrically connected to the host circuit board. The processor controls the overall operation of the wearable device and may include one or more processing units, such as: an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a video processing unit (VPU) controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). These different processing units may be independent devices or integrated into one or more processors.

[0053] The processor may include memory for storing instructions and data. In some embodiments, the memory in the processor may include a cache memory. This memory can store instructions or data that the processor has just used or that are used repeatedly. If the processor needs to reuse the instruction or data, it can retrieve it directly from the memory, avoiding repeated accesses, reducing processor wait time, and thus improving system efficiency.

[0054] The display screen 1120 can be used to display images, videos, etc., and can be circular, rectangular, or other regular or irregular shapes. The display screen includes a cover plate and a display panel. The cover plate covers the side of the display panel facing away from the interior of the housing 1110 to protect and prevent dust from entering the display panel. The display panel 121 can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a mini light-emitting diode (Mini-LED), a micro light-emitting diode (MicroLED), a micro organic light-emitting diode (Micro-OLED), a quantum dot light-emitting diode (QLED), etc. Additionally, in some implementations, the display panel 121 can also integrate touch functionality.

[0055] The housing 1110 may include a middle frame 1111 and a back cover 1112. Along the thickness direction of the main body 1100, the back cover 1112 is disposed opposite to the display screen 1120. One end of the middle frame 1111 is fixedly connected to the display screen 1120, and the other end of the middle frame 1111 is fixedly connected to the back cover 1112. The side containing the back cover 1112 may be the side of the wearable device 1000 that is in contact with the user when worn. For example, when the wearable device 1000 is a smartwatch, the outer surface of the back cover 1112 facing away from the interior of the housing may contact the user's wrist.

[0056] In the example of a wearable device as a smartwatch, the housing may also include a bezel that surrounds the display screen in a circular arrangement. The bezel is fixedly connected to the mid-frame, and at least partially covers the surface of the display screen facing away from the interior of the housing. The bezel serves two purposes: firstly, it protects the display screen, reducing the risk of impacts, scratches, or other external damage to the screen's edges; secondly, the bezel can enhance the appearance of the wearable device 1000 by using different designs and materials. Additionally, the surface of the bezel may be designed with graduations, numbers, or markings to facilitate time reading for the user.

[0057] In addition, the middle frame 1111 may be provided with an operation button 100, which can be electrically connected to the functional module housed inside the housing. It can perform specific functions in response to the user's rotation or pressing operation, such as controlling the wearable device to turn on or off, controlling the display screen 1120 to display the main menu interface, returning to the previous menu, etc.

[0058] As mentioned above, the main body 1100 of the wearable device 1000 can integrate a variety of functional modules. In addition to the various modules mentioned above, the main body 1100 can also be equipped with a detection module. The detection module can detect a variety of health parameters such as the user's heart rate, blood oxygen, electrocardiogram, body fat, and blood pressure, so that the user can obtain their own health status in a timely manner while wearing the wearable device.

[0059] Figure 2 is a partial structural diagram of the main body 1100 provided in an embodiment of this application. Figure 2 shows the relative positional relationship between the middle frame 1111 and the detection module 200. Referring to Figure 2, in this embodiment of the application, the detection module 200 is assembled on the middle frame 1111. Exemplarily, the detection module 200 and the operation button 100 may be located on the same side of the middle frame 1111, or the detection module 200 and the operation button 100 may be located on opposite sides of the middle frame 1111. This application does not impose any limitations on this.

[0060] Figure 3 is a partial exploded view of the main body 1100 provided in an embodiment of this application, and Figure 4 is a structural schematic diagram of the middle frame 1111 provided in an embodiment of this application. Referring to Figures 3 and 4 together, the outer wall of the middle frame 1111 is provided with a mounting groove 11111, and the detection module 200 is assembled in the mounting groove 11111. The mounting groove 11111 can be, but is not limited to, a racetrack shape, a circle, an ellipse, etc. Exemplarily, part of the structure of the detection module 200 is disposed in the mounting groove 11111, and another part of the structure is disposed inside the housing, so as to facilitate interconnection with other functional modules inside the housing. For example, the detection module 200 can be electrically connected to the host circuit board inside the housing, and electrically connected to the processor through the host circuit board, so that the processor can obtain the detection signals of the detection module 200, calculate the relevant health parameters based on these detection signals, and then control the display screen to display the health parameters.

[0061] In some embodiments, the outer wall of the middle frame 1111 is provided with a boss 11112, and the mounting groove 11111 can be formed on the boss 11112. This design can increase the depth of the mounting groove 11111, which facilitates the installation and layout of some structures of the detection module 200 in the mounting groove 11111.

[0062] Figure 5 is a structural schematic diagram of a detection module 200 provided in an embodiment of this application, and Figure 6 is a partial exploded view of the detection module 200 shown in Figure 5. Referring to Figures 5 and 6 together, in this embodiment of the application, the detection module 200 includes a bracket 210, a cover plate 220, a first circuit structure 230, a second circuit structure 240, and a button lever 250. At least a portion of the bracket 210, the cover plate 220, and the first circuit structure 230 are disposed in the mounting groove 11111 of the middle frame 1111 (refer to Figure 4), and the bracket 210, the cover plate 220, and the first circuit structure 230 are movable relative to the mounting groove 1111. The second circuit structure 240 is fixedly disposed inside the housing. The bottom of the mounting slot 11111 is provided with a first through hole 111111 that communicates with the inside of the housing. The button rod 250 passes through the first through hole 111111. The button rod 250 includes a first end 251 and a second end 252. The first end 251 of the button rod 250 is fixedly connected to the first circuit structure 230. The second end 252 of the button rod 250 points towards the second circuit structure 240. The button rod 250 can move towards or away from the second circuit structure 240 as the first circuit structure 230 moves.

[0063] In some embodiments, the detection module 200 further includes a sealing ring 253, which is sleeved on the button rod 250. After the detection module 200 is installed on the middle frame 1111, the sealing ring 253 can be pressed between the outer wall of the button rod 250 and the inner wall of the first through hole 111111, thereby forming a seal at the first through hole 111111 and reducing the risk of external moisture, dust, etc. entering the housing through the first through hole 111111. Exemplarily, the outer wall of the button rod 250 is provided with an annular sealing groove, and the sealing ring 253 can be partially accommodated in the sealing groove so that the sealing ring can maintain a relatively fixed positional relationship with the button rod 250, thereby improving the sealing effect of the sealing ring 253.

[0064] In this embodiment, the bracket 210 includes a first side 211 and a second side 212. When the detection module 200 is assembled into the mounting groove 1111, the first side 211 of the bracket 210 can be understood as the side of the bracket 210 facing away from the bottom of the mounting groove 1111, and the second side 212 of the bracket 210 can be understood as the side of the bracket 210 facing the bottom of the mounting groove 1111. The cover plate 220 is fixed to the bracket 210. Specifically, the cover plate 220 can be disposed on the first side 211 of the bracket 210, so that the cover plate 220 is exposed in the mounting groove 1111, and the surface of the cover plate 220 facing away from the bracket 210 can be part of the appearance surface of the main body.

[0065] The first circuit structure 230 includes a first circuit board 231 and a photoplethysmography (PPG) sensor 232. The first circuit board 231 is fixed to a bracket 210, and the PPG sensor 232 is disposed on the side of the first circuit board 231 facing the cover plate 220. The cover plate 220 includes a light-transmitting area 221, which is disposed opposite to the PPG sensor 232, so that the PPG sensor 232 emits or receives light through the light-transmitting area 221. In one implementation, the first circuit board 231 may be disposed on the second side 212 of the bracket 210, so that sufficient height space can be formed between the first circuit board 231 and the cover plate 220 to place the PPG sensor 232.

[0066] The PPG sensor 232 includes a light emitter 2321 and a light sensor 2322. The light emitter 2321 emits light signals, and the light sensor 2322 receives light signals. Exemplarily, the light emitter 2321 can be a light-emitting diode (LED), and the light sensor 2322 can be a photodiode (PD). When using the PPG sensor 232 for detection, a portion of the light signal emitted by the light emitter 2321 is reflected within or at the skin interface of the user, and a portion of the light signal is scattered within the user's skin. The light sensor 2322 can receive both the scattered light signal within the user's skin and the signal reflected back from within or at the skin interface. The scattered and reflected light signals received by the light sensor 2322 can be used to calculate data such as the user's heart rate and blood oxygen saturation.

[0067] The cover plate 220 can be made of a transparent material, such as glass or plastic. The cover plate 220 includes a light-shielding area 222, which can include the area of ​​the cover plate 220 other than the light-transmitting area 221, to shield other structures inside the cover plate 220 except for the PPG sensor 232. Specifically, the side of the cover plate 220 facing the bracket 210 can be entirely coated with ink. Then, according to the position of the pre-formed light-transmitting area 221, the ink at that position is removed using processes such as laser engraving to form the light-transmitting area 221. The remaining area with ink forms the light-shielding area 222.

[0068] In one implementation, the cover plate 220 may include two light-transmitting areas 221, which are respectively positioned opposite to the light emitter 2321 and the photosensor 2322, so that the light emitter 2321 emits light signals through the corresponding light-transmitting area 221 and the photosensor 2322 receives light signals through the corresponding light-transmitting area 221. By reasonably setting the spacing between the two light-transmitting areas 221, the risk of interference between the light signals emitted by the light emitter 2321 and the light signals received by the photosensor 2322 can be reduced, thus helping to improve the detection accuracy of the PPG sensor 232.

[0069] In another implementation, the cover plate 220 may include a light-transmitting area 221 that exposes a light emitter 2321 and a light sensor 2322, so that the light emitter 2321 and the light sensor 2322 emit or receive light signals through the same light-transmitting area 221.

[0070] Furthermore, a first electrode may be provided on the surface of the cover plate 220 facing away from the bracket 210. The first electrode can be used to collect electrical signals from the user's first skin measurement point. A second electrode may be provided on the outer surface of the rear shell 1112 (refer to Figure 1). The second electrode can be used to collect electrical signals from the user's second skin measurement point. For example, when the user wears the wearable device 1000, the first skin measurement point may be the user's right hand finger, and the second skin measurement point may be the user's left wrist; or, the first skin measurement point may be the user's left hand finger, and the second skin measurement point may be the user's right wrist. The first electrode and the second electrode may be electrically connected to the host circuit board, and the electrical signals collected by both may be transmitted by the host circuit board to the processor, so that the processor can obtain the user's electrocardiogram data based on the acquired electrical signals.

[0071] The first electrode can be electrically connected to the first circuit board 231, which in turn is electrically connected to the host circuit board. Specifically, the surface of the cover plate 220 can be provided with traces that are electrically connected to the first electrode, and these traces can extend from the surface of the cover plate 220 away from the support 210 to the surface of the cover plate 220 facing the support 210. A first conductive element 233 is provided on the side of the first circuit board 231 facing the cover plate 220. One end of the first conductive element 233 is electrically connected to the first circuit board 231, and the other end is electrically connected to the traces, thus establishing an electrical connection between the first electrode and the first circuit board 231. For example, the traces can be made of a transparent material, such as indium tin oxide (ITO) or graphene; the first conductive element 233 can be conductive silicone.

[0072] The first electrode can be made of a transparent or opaque material. In one implementation, the first electrode is made of a transparent material, such as an indium tin oxide film or a graphene film. In this case, the first electrode and the wiring can be formed in the same process, simplifying the overall manufacturing process of the cover plate 220. The first electrode can be at least partially disposed within the light-transmitting area 221 of the cover plate 220. Since the first electrode and the light-transmitting area 221 do not need to be separated, the size requirements for the cover plate 220 are relatively low, which helps to reduce the overall size of the health detection. In another implementation, the first electrode is made of an opaque material. In this case, the first electrode is disposed within the light-shielding area 222 of the cover plate 220 to avoid obstructing the light-transmitting area 221.

[0073] The second electrode can be electrically connected to the main circuit board via a second conductive element. For example, the back cover has a through hole connecting the inside of the cover to the outside, and the second conductive element passes through the through hole, with its two ends electrically connected to the second electrode and the main circuit board, respectively. The material of the second electrode can be conductive silicone, metal, etc.

[0074] In some embodiments, the detection module 200 may further include a Fresnel diaphragm 260. There may be two Fresnel diaphragms 260, namely a first Fresnel diaphragm 260a and a second Fresnel diaphragm 260b. The first Fresnel diaphragm 260a and the second Fresnel diaphragm 260b may be fixed to the side of the cover plate 220 facing the support 210. The first Fresnel diaphragm 260a is disposed opposite to the light emitter 2321, and the second Fresnel diaphragm 260b is disposed opposite to the photosensor 2322. The first Fresnel diaphragm 260a can be used, on the one hand, to adjust the optical path of the light emitter 2321, focusing the light signal emitted by the light emitter 2321 and exposing it through the light-transmitting area of ​​the cover plate 220; on the other hand, it can also shield the light emitter 2321, reducing the risk of the light emitter 2321 being clearly exposed on the cover plate 220 side. Similarly, the second Fresnel membrane 260b can be used to adjust the optical path of the photosensor 2322, and to focus the scattered light signal and the reflected light signal and project them onto the photosensor 2322. On the other hand, it can shield the photosensor 2322, reducing the risk of the photosensor 2322 being clearly exposed on the cover plate 220 side.

[0075] Figure 7 is a schematic diagram of the structure of the bracket 210 of the detection module shown in Figure 6. Referring to Figures 6 and 7 together, in this embodiment, the bracket 210 is slidably disposed within the mounting groove of the middle frame. Therefore, the shape of the bracket 210 can be approximately the same as the shape of the mounting groove of the middle frame. For example, if the mounting groove is elliptical, the bracket 210 is approximately an elliptical frame structure. A mounting wall 213 is provided inside the bracket 210, and the peripheral edge of the mounting wall 213 is fixedly connected to the inner wall of the bracket 210. The cover plate 220 is fixedly connected to the surface of the mounting wall 213 facing the first side 211 of the bracket 210, and the first circuit board 231 is fixedly connected to the surface of the mounting wall facing the second side 212 of the bracket 210.

[0076] The mounting wall 213 is provided with a first opening 2131 and a second opening 2132, which connect the first side 211 and the second side 212 of the bracket 210, respectively. The first opening 2131 and the second opening 2132 are spaced apart, with the first opening 2131 facing the light emitter 2321 and the second opening 2132 facing the light sensor 2322. Based on the connection relationship between the two surfaces of the mounting wall 213 and the first circuit board 231 and the cover plate 220, the two ends of the first opening 2131 and the second opening 2132 can be sealed by the first circuit board 231 and the cover plate 220 respectively. The light emitter 2321 is disposed in the first opening 2131 and the light sensor 2322 is disposed in the second opening 2132. The light signal emitted by the light emitter 2321 can propagate in the first opening 2131 and the light signal received by the light receiver can propagate in the second opening 2132. In this way, the light signal emitted by the light emitter 2321 and the light signal received by the light sensor 2322 can be isolated from each other inside the bracket 210, which helps to further improve the detection accuracy of the PPG sensor.

[0077] In addition, when the first conductive element 233 is provided on the first circuit board 231, the first conductive element 233 can be provided close to the light emitter 2321 or the light sensor 2322. Correspondingly, the opening area of ​​the first opening 2131 or the second opening 2132 can be appropriately extended so that the first conductive element 233 can be provided together with the light emitter 2321 in the first opening 2131, or together with the light sensor 2322 in the second opening 2132, so that the first conductive element 233 can pass through the mounting wall 213 and be electrically connected to the cover plate 220.

[0078] In some embodiments, the mounting wall 213 may have a certain distance from the first side and the second side of the bracket 210, respectively. The space between the mounting wall 213 and the first side 211 of the bracket 210 can form a first groove 214, and the space between the mounting wall 213 and the second side 212 of the bracket 210 can form a second groove 215. The cover plate 220 can be at least partially accommodated in the first groove 214, and the first circuit board 231 can be at least partially accommodated in the second groove 215, thereby improving the sealing performance of the cover plate 220 and the first circuit board 231 for the two openings.

[0079] For example, the cover plate 220 is fixedly connected to the mounting wall 213 via a first adhesive 216, and the first circuit board 231 is fixedly connected to the mounting wall 213 via a second adhesive 217. The first adhesive 216 is provided with two first clearance holes 2161, one of which is opposite to the light emitter 2321, and the other is opposite to the photosensor 2322. Similarly, the second adhesive 217 is provided with two second clearance holes 2171, one of which is opposite to the light emitter 2321, and the other is opposite to the photosensor 2322.

[0080] In this embodiment, the groove wall of the second groove 215 may be provided with a slot 2151, which can extend through to the surface of the second side 212 of the bracket 210. Correspondingly, a guide block 111112 (refer to FIG4) is provided in the mounting groove 11111 of the middle frame 1111. When the bracket 210 is installed in the mounting groove 11111, the guide block 111112 is slidably assembled in the slot 2151, thereby using the sliding connection between the guide block 111112 and the slot 2151 to provide guidance for the sliding of the bracket 210 in the mounting groove 11111.

[0081] Figure 8 is a schematic diagram of the first circuit structure 230 of the detection module shown in Figure 6. Referring to Figure 8, in this embodiment, the first circuit board 231 can be a flexible circuit board, which gives it better deformability and allows for flexible shape and position settings, facilitating interconnection with the interior of the housing. The first circuit board 231 includes a board body 2311 and an electrical connection portion 2312. The electrical connection portion 2312 is connected to one end of the board body 2311 and is bent. The PPG sensor 232 is disposed on the board body 2311, and the electrical connection portion 2312 can extend into the housing and be electrically connected to the host circuit board, so that the signal detected by the PPG sensor 232 can be transmitted to the host circuit board sequentially through the board body 2311 and the electrical connection portion 2312, and further transmitted to the processor through the host circuit board. For example, the electrical connection part 2312 can be electrically connected to the host circuit board via a board-to-board (BTB) connector, hot bar soldering, zero insertion force (ZIF) socket, or other means.

[0082] Referring to Figure 7, in one implementation, the plate 2311 is disposed within the second groove 215, and the groove wall of the second groove 215 is provided with a clearance groove 2152, through which the electrical connection part 2312 can be connected to the plate 2311. Additionally, the bottom of the mounting groove 11111 of the middle frame 1111 is provided with a second through hole 111113 (refer to Figure 4), through which the electrical connection part 2312 can extend into the housing and be electrically connected to the main circuit board. After the detection module 200 is assembled into the housing, the interior of the housing can be sealed with adhesive at the second through hole 111113 to reduce the risk of external moisture, dust, etc., entering the housing through the second through hole 111113.

[0083] In addition, the bending shape of the electrical connection part 2312 can be designed with reference to the position of the main circuit board inside the housing and the available space, and this application does not make specific limitations in this regard.

[0084] Referring to Figure 8, the first circuit structure 230 also includes a first reinforcing plate 234, which is fixed to the side of the first circuit board 231 facing away from the PPG sensor 232. Specifically, the first reinforcing plate 234 is fixed to the side of the board body 2311 facing away from the PPG sensor 232 to provide reinforcement and support for the board body 2311. This facilitates the mounting of the light emitter 2321 and the light sensor on the surface of the board body 2311, and also allows the board body 2311 to be reliably connected to the bracket 210 in a fixed form. For example, the first reinforcing plate 234 and the board body 2311 can be fixed by adhesive.

[0085] Additionally, the surface of the first reinforcing plate 234 facing away from the plate 2311 can be connected to the first end 251 of the button rod 250 to achieve relative fixation between the button rod 250 and the first circuit board 231. In one implementation, the button rod 250 and the first reinforcing plate 234 can be an integrally formed structure, which not only improves the connection strength between the button rod 250 and the first reinforcing plate 234, but also simplifies the assembly process of the detection module 200 to a certain extent.

[0086] Figure 9 is a schematic diagram of the second circuit structure 240 of the detection module shown in Figure 6. Referring also to Figures 8 and 9, in this embodiment, the second circuit structure 240 includes a second circuit board 241, a micro switch 242, and a pressure sensor 243. Both the micro switch 242 and the pressure sensor 243 are electrically connected to the second circuit board 241, which is electrically connected to the host circuit board and, through the host circuit board, to the processor. The micro switch 242 is disposed on the second circuit board 241 and faces the second end 252 of the button lever 250. The button lever 250 can trigger the micro switch 242 when moved. The pressure sensor 243 can be used to detect the pressing force of the button lever 250. Here, the pressing force of the button lever 250 refers to the pressing force experienced by the button lever 250 when it is pressed.

[0087] For example, the micro switch 242 can be a dome button. The micro switch 242 is in contact with the second end 252 of the button lever 250, and the pressing force of the button lever 250 is transmitted to the micro switch 242 through the second end 252 of the button lever 250. As those skilled in the art will know, the micro switch 242 typically has a certain opening pressure. The pressure applied by the button lever 250 to the micro switch 242 can only trigger the micro switch 242 if it is greater than or equal to the opening pressure of the micro switch 242; otherwise, the micro switch 242 will not be triggered. Therefore, the micro switch 242 can withstand a certain amount of pressure even when it is not triggered by the button lever 250.

[0088] The pressure sensor 243 can be fixedly connected to the side of the micro switch 242 facing away from the button lever 250. Alternatively, it can be understood as the pressure sensor 243 being fixedly connected below the micro switch 242 along the direction from the first end 251 of the button lever 250 to the second end 252 of the button lever 252. When the button lever 250 is pressed, the pressing force is transmitted to the micro switch 242 through the second end 252 of the button lever 250. The pressure sensor 243 can then detect the pressing force of the button lever 250 by detecting the force applied to the micro switch 242. For example, the pressure sensor 243 can be a strain gauge type pressure sensor 243. The pressure sensor 243 may include one or more strain gauges, whose resistance value changes accordingly with the deformation of the strain gauge. This change in the resistance value of the strain gauge further causes a change in the output signal of the pressure sensor 243.

[0089] Referring to Figure 9, in this embodiment, the second circuit board 241 can be a flexible circuit board, allowing it to adapt to the internal space of the housing through deformation, facilitating the installation of the second circuit structure 240 inside the housing. The second circuit board 241 may include a first connecting portion 2411 and a second connecting portion 2412, with the first connecting portion 2411 connected to the second connecting portion 2412. The first connecting portion 2411 can be used to house the micro switch 242 and electrically connect the pressure sensor 243, while the second connecting portion 2412 is used to electrically connect to the host circuit board. Exemplarily, the second connecting portion 2412 can be electrically connected to the host circuit board via a BTB connector, hotbar, ZIF, or other similar means.

[0090] The shape of the second connecting part 2412 and its bending direction relative to the first connecting part 2411 can be designed with reference to the position of the main circuit board inside the housing and the available space. This application does not make specific limitations in this regard.

[0091] In some embodiments, the first connecting portion 2411 includes a first sub-plate 24111, a second sub-plate 24112, and a bending portion 24113. The first sub-plate 24111 and the second sub-plate 24112 are opposite to each other and spaced apart. The bending portion 24113 connects the first sub-plate 24111 and the second sub-plate 24112. The first sub-plate 24111 is disposed at the second end 252 of the button lever 250. The side of the first sub-plate 24111 facing the button lever 250 can be used to be disposed on the micro switch 242. The second sub-plate 24112 can be used to connect to the second connecting portion 2412.

[0092] In some embodiments, the second circuit structure 240 further includes a second reinforcing plate 244, which is disposed between the first sub-board 24111 and the second sub-board 24112. The second reinforcing plate 244 is used to reinforce and support the first sub-board 24111, thereby facilitating the mounting of the micro switch 242 on the surface of the first sub-board 24111.

[0093] In this embodiment, the detection module 200 further includes a fixing piece 270, which supports the micro switch 242 to withstand the pressing force of the button lever 250, ensuring that the micro switch 242 does not move under the pressing force of the button lever 250. The fixing piece 270 can be fixedly connected to the inner wall of the housing, thus achieving its fixation within the housing. For example, the fixing piece 270 can be fixedly connected to the inner wall of a structure such as a middle frame, back shell, or bezel.

[0094] In some embodiments, the fixing piece 270 is generally U-shaped and may include a first piece 271, a second piece 272, and a third piece 273. The second piece 272 and the third piece 273 are respectively connected to opposite ends of the first piece 271, and are arranged opposite to each other. The first piece 271 is supported on the side of the micro switch 242 facing away from the button lever 250. Specifically, the first piece 271 is disposed between the first sub-plate 24111 and the second sub-plate 24112, and is fixed to the side of the second reinforcing plate 244 facing away from the first sub-plate 24111. Therefore, the first piece 271 can effectively support the micro switch 242. The second piece 272 and the third piece 273 are respectively fixedly connected to the inner wall of the middle frame. The second piece 272 and the third piece 273 can each be provided with a latch 2721. The inner wall of the middle frame 1111 is provided with hooks 11113 corresponding to the two latches 2721 respectively (see Figures 3 and 4). The latches 2721 of the second piece 272 and the latches 2721 of the third piece 273 are respectively engaged with the corresponding hooks 11113, so that the fixing piece 270 and the middle frame 1111 can be relatively fixed.

[0095] The pressure sensor 243 can be disposed on the fixed plate 270. The fixed plate 270 can be made of relatively soft steel. When the button lever 250 presses the micro switch 242 due to the pressure, the fixed plate 270 will also be subjected to the same pressure applied by the micro switch 242. Under this pressure, the fixed plate 270 will deform to a certain extent. The pressure sensor 243 can detect the pressing force of the button lever 250 based on the deformation of the fixed plate 270.

[0096] In one implementation, the first sheet 271 includes a first surface 2711 facing away from the first sub-board 24111, and the pressure sensor 243 is fixed to the first surface 2711 of the first sheet 271. That is, the pressure sensor 243 is located in the gap between the first sheet 271 and the second sub-board 24112. Therefore, by reasonably designing the gap between the first sub-board 24111 and the second sub-board 24112, the pressure sensor 243 can also be attached to the second sub-board 24112, thereby reducing the difficulty of electrical connection between the pressure sensor 243 and the second circuit board 241, which helps to simplify the structure of the second circuit board 241, reduce the size of the second circuit board 241 and the entire second circuit structure 240, and thus reduce the space occupied by the second circuit structure 240 inside the housing.

[0097] The above describes one embodiment where the second circuit structure 240 is fixed inside the housing using a fixing piece 270. It should be understood that in other embodiments, the second circuit structure 240 can also be directly fixed to a structural component inside the housing. For example, a mounting bracket is provided inside the housing, and the second circuit structure 240 is mounted on the bracket. At least a portion of the bracket supports the microswitch 242 on the side facing away from the button lever 250. Based on this, the pressure sensor 243 can be fixed to the bracket to detect the pressing force of the button lever 250 based on the deformation of the bracket. Furthermore, in this design, the structure of the second circuit board 241 can be appropriately simplified. For example, the bracket can be provided with a conductive element electrically connected to the main circuit board; in this case, the second circuit board 241 may not need to have a second connecting portion.

[0098] In addition, the detection module 200 also includes a retaining spring 280 (refer to Figure 6). The outer wall of the button lever 250 is provided with a retaining groove 254, and the retaining spring 280 is engaged with the retaining groove 254 and fixedly connected to the inner wall of the housing. For example, the retaining spring 280 can be fixedly connected to the inner wall of a structure such as a mid-frame, back cover, or bezel. By using the retaining spring 280 to engage the button lever 250, the detection module 200 can be prevented from becoming detached from the mid-frame while allowing the button lever 250 to move, thereby improving the installation reliability of the detection module 200 in the wearable device. Furthermore, when the pressure applied to the button lever 250 is removed, the button lever 250 can also return to its unpressed state under the elastic force of the retaining spring 280.

[0099] Figure 10 is a cross-sectional view of the assembly structure of the detection module 200 and the middle frame 1111 shown in Figure 5. Referring to Figure 10, as described in the previous embodiment, the bracket 210 is connected to the cover plate 220 and the first circuit structure 230, and the first circuit structure 230 is connected to the button lever 250. Therefore, the cover plate 220, bracket 210, first circuit structure 230, and button lever 250 can be regarded as an integral module. The surface of the cover plate 220 facing away from the bracket 210 can serve as the force-bearing surface of this module to receive the user's pressing operation. After the cover plate 220 receives the user's pressing operation, the pressing force on the cover plate 220 will be transmitted to the button lever 250 in sequence through the bracket 210 and the first circuit structure 230. Therefore, the pressing force on the button lever 250 is the pressing force applied by the user to the cover plate 220. Furthermore, through the sliding connection between the bracket 210 and the mounting groove 11111, the module consisting of the cover plate 220, the bracket 210, the first circuit structure 230, and the button lever 250 can also move relative to the mounting groove 11111. Therefore, this module can be regarded as a button with physical travel.

[0100] The second circuit structure 240 is fixed inside the housing. When the button lever 250 is pressed, the pressing force is transmitted to the fixing plate 270 through the button lever 250 and the micro switch 242 in sequence. The pressure sensor 243 of the second circuit structure 240 detects the pressing force of the button lever 250 through the deformation of the fixing plate 270. The micro switch 242 can be triggered by the button lever 250 when the button lever 250 reaches a certain stroke.

[0101] Figure 11 is a schematic diagram of another detection module 200 provided in an embodiment of this application, and Figure 12 is an exploded view of a partial structure of the detection module 200 shown in Figure 11. Referring to Figures 11 and 12 together, in this embodiment of the application, the detection module 200 also includes a bracket 210, a cover plate 220, a first circuit structure 230, a second circuit structure 240, and a button lever 250. The structural forms of the bracket 210, cover plate 220, first circuit structure 230, and button lever 250 are basically the same as those in the aforementioned embodiments, and will not be described again here.

[0102] In this embodiment, the detection module 200 may further include an elastic sheet 290, which is connected to the button lever 250. The pressure sensor of the second circuit structure 240 is fixed to the elastic sheet. The pressure sensor is also a strain gauge type pressure sensor. The button lever 250 can deform the elastic sheet 290 when it moves, and the pressure sensor can detect the pressing force of the button lever 250 based on the deformation of the elastic sheet 290.

[0103] In some embodiments, the elastic sheet 290 extends along a first direction, which, exemplarily, may be the radial direction of the button lever 250. The elastic sheet 290 includes a first end 291 and a second end 292. The first end 291 of the elastic sheet 290 is fixedly connected to the button lever 250, and the second end 292 of the elastic sheet 290 is fixedly connected to the interior of the housing. When the button lever 250 moves, the elastic sheet 290, being fixedly connected to the housing, cannot move synchronously with the button lever 250 as a whole; therefore, the elastic sheet 290 will inevitably undergo elastic deformation.

[0104] In a specific implementation, the first end 291 of the elastic sheet 290 is provided with a retaining ring 293, and the outer wall of the button rod 250 is provided with a fixing groove 255. The retaining ring 293 of the elastic sheet 290 is engaged with the fixing groove 255 of the button rod 250, thereby fixing the elastic sheet 290 and the button rod 250 together. The second end 292 of the elastic sheet 290 is provided with a fixing ring 294, and the inner wall of the housing is provided with a protrusion 11114. The protrusion 11114 is provided with a fixing post 111141 (refer to Figure 3). The fixing ring 294 of the elastic sheet 290 is fitted onto the fixing post 111141, thereby fixing the elastic sheet 290 and the inner wall of the housing together. For example, the protrusion 11114 can be provided on the inner wall of the middle frame 1111, the back shell, or the bezel, etc.

[0105] Figure 13 is an exploded view of a partial structure of the detection module 200 shown in Figure 11. Referring also to Figures 12 and 13, in some embodiments, the elastic sheet 290 includes a first surface 295, which is disposed away from the first circuit structure 230. The pressure sensor 243 is fixed to the first surface 295 of the elastic sheet 290. This design allows the first surface 295 of the elastic sheet 290 to undergo relatively significant deformation as the button lever 250 moves, thereby helping the pressure sensor 243 to detect the pressing force of the button lever 250 more sensitively.

[0106] As is easily understood, the connection between the elastic sheet 290, the button lever 250, and the interior of the housing also prevents the detection module 200 from becoming loose relative to the mid-frame, thereby improving the installation reliability of the detection module 200 in the wearable device. Furthermore, when the pressure applied to the button lever 250 is removed, the button lever 250 can return to its unpressed state under the elastic force of the elastic sheet 290.

[0107] Figure 14 is a schematic diagram of the structure of the second circuit board 241 of the detection module 200 shown in Figure 11. Referring to Figures 12 to 14, the second circuit board 241 is a flexible circuit board, including a first connecting portion 2411 and a second connecting portion 2412, which are connected together. The first connecting portion 2411 is located at the second end 252 of the button lever 250, and a micro switch 242 is disposed on the side of the first connecting portion 2411 facing the button lever 250. The second connecting portion 2412 can be bent relative to the first connecting portion 2411. The second connecting portion 2412 is positioned opposite to the elastic sheet 290 so that the pressure sensor 243 can be attached to the second connecting portion 2412. This eliminates the need for additional conductors to electrically connect the pressure sensor 243 to the second circuit board 241, simplifying the structure of the detection module 200 and reducing the assembly process.

[0108] Additionally, the second circuit board 241 may also include a third connecting portion 2413, which is connected to the first connecting portion 2411 and can be electrically connected to the host circuit board. For example, the third connecting portion 2413 can be electrically connected to the host circuit board via a BTB connector, hotbar, ZIF, or similar means. The shape of the third connecting portion 2413 and its bending direction relative to the first connecting portion 2411 can be designed with reference to the position of the host circuit board inside the housing and the available space; this application does not specifically limit this design.

[0109] In some embodiments, the first connecting portion 2411 includes a first sub-plate 24111, a second sub-plate 24112, and a bending portion 24113. The first sub-plate 24111 and the second sub-plate 24112 are opposite to each other and spaced apart. The bending portion 24113 connects the first sub-plate 24111 and the second sub-plate 24112. The first sub-plate 24111 is disposed at the second end 252 of the button lever 250. The side of the first sub-plate 24111 facing the button lever 250 can be used to be disposed on the micro switch 242. The second sub-plate 24112 can be used to connect to the second connecting portion 2412.

[0110] In some embodiments, the second circuit structure 240 further includes a second reinforcing plate 244, which is disposed between the first sub-board 24111 and the second sub-board 24112. The second reinforcing plate 244 is used to reinforce and support the first sub-board 24111, thereby facilitating the mounting of the micro switch 242 on the surface of the first sub-board 24111.

[0111] Similarly, in this embodiment, the detection module 200 may also include a fixing piece 270 to support the micro switch 242. The structure and arrangement of the fixing piece 270 can be designed with reference to the foregoing embodiments, and will not be elaborated further here.

[0112] Of course, in some other embodiments, the second circuit structure 240 can also be directly fixed to a structural component inside the housing. In this case, the fixing piece 270 does not need to be provided in the detection module 200. The structural component can be a mounting bracket, and the second circuit structure 240 is disposed on the mounting bracket. At least a portion of the mounting bracket supports the micro switch 242 on the side facing away from the button lever 250. In addition, the structure of the second circuit board 241 can also be appropriately simplified. For example, the mounting bracket can be provided with a conductive component electrically connected to the main circuit board. In this case, the second circuit board 241 does not need to be provided with the third connecting part 2413.

[0113] Figure 15 is a cross-sectional view of the assembly structure of the detection module 200 and the middle frame shown in Figure 11. Referring to Figure 15, and in conjunction with the description of the embodiments shown in Figures 11 to 14, in this embodiment, the module consisting of the cover plate 220, the bracket 210, the first circuit structure 230, and the button lever 250 can move relative to the mounting groove 11111. Therefore, this module can be regarded as a button that can be triggered by a user pressing it. The second circuit structure 240 is fixed inside the housing. When the button lever 250 is pressed, the pressing force is transmitted to the elastic sheet 290 through the button lever 250. The pressure sensor 243 of the second circuit structure 240 detects the pressing force of the button lever 250 through the deformation of the elastic sheet 290. The micro switch 242 can be triggered by the button lever 250 when the button lever 250 reaches a certain stroke.

[0114] As can be seen from the above descriptions of the embodiments, the detection module 200 provided in this application can not only detect the user's health data, but also has the function of physical buttons. In other words, the detection module 200 can reuse health detection functions and physical button functions, thereby improving the overall integration of the wearable device. Furthermore, compared to wearable devices in the prior art that have separate health detection buttons, the wearable device provided in this embodiment has a relatively small number of buttons, thus improving the appearance quality of the wearable device.

[0115] Based on the aforementioned functions of the detection module, in this embodiment of the application, the processor can be used to control the wearable device to perform a first operation when a micro switch is detected to be triggered. The first operation includes activating a function of the wearable device and controlling the display screen to display the interface of that function.

[0116] In one implementation, the first operation can be to start the health check function and control the display screen to show the health check interface.

[0117] It should be noted that the above operation is not the only way to start the health check function. In other implementations, users can also start the health check function by clicking the health check control on the display screen.

[0118] In some embodiments, the processor is further configured to acquire the user's health data after activating the health monitoring function. The health data includes heart rate, blood oxygen saturation, or electrocardiogram (ECG) data. Specifically, the processor is configured to acquire the user's heart rate or blood oxygen saturation data based on the detection signal from the PPG sensor; and the processor is configured to acquire the user's ECG data based on the electrical signals from the first electrode and the second electrode.

[0119] In some embodiments, the processor is further configured to, after activating the health monitoring function, acquire the pressure applied to the button lever, and, if the pressure applied to the button lever is determined to be within a threshold range, calculate the user's blood pressure data based on the detection signal from the PPG sensor and the electrical signals from the first and second electrodes. A pressure applied to the button lever within the threshold range indicates that the user's finger is making good contact with the cover plate and the pressure is moderate; in this case, the acquired blood pressure data will be more accurate.

[0120] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A detection module, characterized in that, Includes a bracket, a cover plate, a first circuit structure, a second circuit structure, and a button lever, wherein: The cover plate is fixed to the bracket, and the cover plate includes a light-transmitting area; The first circuit structure includes a first circuit board and a PPG sensor. The first circuit board is fixed to the bracket, and the PPG sensor is disposed on the side of the first circuit board facing the cover plate. The PPG sensor is disposed opposite to the light-transmitting area. The button lever includes a first end and a second end, and the first end of the button lever is fixedly connected to the first circuit board. The second circuit structure includes a second circuit board, a micro switch, and a pressure sensor. The micro switch is disposed on the second circuit board and faces the second end of the button lever. The button lever is used to trigger the micro switch when it is moved. The pressure sensor is electrically connected to the second circuit board and is used to detect the pressing force of the button lever.

2. The detection module as described in claim 1, characterized in that, The detection module includes an elastic sheet, which is connected to the button lever, and the pressure sensor is fixed to the elastic sheet.

3. The detection module as described in claim 2, characterized in that, The button lever is used to deform the elastic sheet when it moves, and the pressure sensor is used to detect the pressing force of the button lever based on the deformation of the elastic sheet.

4. The detection module as described in claim 2 or 3, characterized in that, The elastic sheet extends along a first direction, and the first end of the elastic sheet is fixedly connected to the button rod; The elastic sheet includes a first surface facing away from the first circuit structure, and the pressure sensor is fixed to the first surface of the elastic sheet.

5. The detection module as described in claim 4, characterized in that, The first end of the elastic sheet is provided with a retaining ring, and the outer wall of the button rod is provided with a fixing groove, and the retaining ring is engaged with the fixing groove.

6. The detection module as described in any one of claims 2-5, characterized in that, The second circuit board is a flexible circuit board, and the second circuit board includes a first connecting part and a second connecting part, wherein the first connecting part is connected to the second connecting part; The first connecting part is located at the second end of the button lever, and the micro switch is disposed on the side of the first connecting part facing the button lever; The second connecting portion is disposed opposite to the elastic sheet, and the pressure sensor is attached to the second connecting portion.

7. The detection module as described in any one of claims 2-6, characterized in that, The detection module also includes a fixing plate, which is used to support the micro switch.

8. The detection module as described in claim 1, characterized in that, The pressure sensor is fixedly connected to the side of the micro switch opposite to the button lever.

9. The detection module as described in claim 8, characterized in that, The micro switch is configured to contact the second end of the button lever.

10. The detection module as described in claim 8 or 9, characterized in that, The detection module also includes a fixing plate, which supports the micro switch, and the pressure sensor is fixed to the fixing plate.

11. The detection module as described in claim 10, characterized in that, The second circuit board is a flexible circuit board, which includes a first sub-board, a second sub-board and a bending portion. The first sub-board is disposed at the second end of the button lever, and the second sub-board is disposed on the side of the first sub-board facing away from the button lever. The second sub-board and the first sub-board are spaced apart. The bending portion connects the first sub-board and the second sub-board. The micro switch is located on the side of the first sub-board facing the button lever; The fixing plate is supported on the side of the first sub-plate facing the second sub-plate. The fixing plate includes a first surface facing away from the first sub-plate. The pressure sensor is disposed on the first surface of the fixing plate and is attached to the second sub-plate.

12. A wearable device, characterized in that, The device includes a housing and a detection module as described in any one of claims 1-11, wherein the outer wall of the housing is provided with a mounting groove, and the detection module is assembled to the wearable device through the mounting groove.

13. The wearable device as claimed in claim 12, characterized in that, The wearable device includes a processor, the processor being used for: Upon detecting that the microswitch has been triggered, the wearable device is controlled to perform a first operation.

14. The wearable device as claimed in claim 12 or 13, characterized in that, The mounting groove is provided with a first through hole communicating with the interior of the housing; the button rod is slidably disposed in the first through hole, with the first end of the button rod located in the mounting groove and the second end of the button rod located inside the housing; The bracket, the cover plate, and at least a portion of the first circuit structure are disposed within the mounting groove, and the bracket is slidably connected to the mounting groove. The second circuit structure is disposed inside the housing.

15. The wearable device as claimed in claim 14, characterized in that, The detection module further includes a fixing plate, which includes a first plate body, a second plate body, and a third plate body, wherein the second plate body and the third plate body are respectively connected to the two ends of the first plate body; The first piece is used to support the micro switch, and the second piece and the third piece are respectively provided with bayonet slots; The inner wall of the housing is provided with hooks corresponding to the two bayonets respectively, and each bayonet is hooked to the corresponding hook.

16. The wearable device as claimed in claim 14, characterized in that, A mounting bracket is provided inside the housing, and the second circuit structure is disposed on the mounting bracket. At least a portion of the mounting bracket supports the micro switch on the side facing away from the button lever.

17. The wearable device according to any one of claims 14-16, characterized in that, The detection module also includes a sealing ring, which is sealed between the outer wall of the button rod and the inner wall of the first through hole.

18. The wearable device according to any one of claims 14-17, characterized in that, The mounting slot is provided with a second through hole that communicates with the inside of the housing, and the first circuit board is electrically connected to the inside of the housing through the second through hole.

19. The wearable device according to any one of claims 12-18, characterized in that, The housing includes a rear housing; A first electrode is provided on the surface of the cover plate facing away from the bracket, and a second electrode is provided on the surface of the rear shell facing away from the interior of the shell.

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