Electrocardio button structure and wearable device

Abstract

The utility model discloses a kind of electrocardio button structure and wearable equipment, wherein the electrocardio button structure is directly connected with mainboard by at least one electrically-conductive elastic piece by being as user contact electrode with electrically-conductive button, electrically-conductive button is both retained mechanical sliding touch press function and acts as electrocardio collection electrode, electrically-conductive elastic piece keeps deformable and stable electrical connection when button slides or stress changes, avoid exposed wire, additional electrode and complex connecting piece, to realize the structure and electrical integration of button and ECG electrode, reduce spare parts and assembly step, improve bioelectricity signal transmission reliability and improve manufacturing cost and user experience, effectively solve the problem of complex button and electrode structure in existing wearable ECG equipment.

Description

Technical Field

[0001] This utility model relates to the field of smart wearable device technology, and in particular to an ECG button structure and wearable device. Background Technology

[0002] Currently, with the widespread adoption of wearable devices in personal health management, products such as smartwatches integrating electrocardiogram (ECG) monitoring are increasingly favored by users. However, in existing technologies, implementing ECG functionality typically requires the installation of independent detection electrodes on the device. These independent electrodes are structurally separate from the device's existing physical buttons, necessitating separate internal support, fixation, conductive, and waterproof structures for each. Specifically, the independent electrodes require additional installation space and are fixed to the housing using methods such as adhesive dispensing and clips. Their signal lines must be separately routed to the motherboard, increasing not only the number of parts and assembly steps but also introducing potential leakage risks. Furthermore, to ensure reliable signal acquisition, the conductive connection between the electrode and the motherboard must be stable, further demanding a complex connection design. The physical button itself is also a complete mechanical structure comprising a button cap, elastic components (such as silicone dome switches or metal springs), a mounting bracket, and corresponding contacts on the PCB. When integrating ECG electrodes into compact devices with existing multi-button designs, this functional separation design inevitably leads to highly complex internal structures and difficult spatial layout, making it difficult to meet the demands of miniaturization and thinner designs in wearable devices. Therefore, how to fundamentally simplify the internal structure of wearable devices with ECG functionality and reduce component redundancy and connection complexity caused by functional overlap has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0003] The present invention provides an ECG button structure and a wearable device, aiming to solve the technical problem of complex button and electrode structures in existing wearable devices with integrated ECG functions.

[0004] In a first aspect, this utility model provides an ECG button structure, comprising: a housing; a main board disposed within the housing, the main board being used to identify user biosignals; a button support body disposed inside the housing; a conductive button slidably disposed on the button support body, the end of the conductive button away from the button support body having a user contact portion disposed outside the housing; and at least one conductive elastic element, the two ends of the conductive elastic element being electrically connected to the user contact portion and the main board, respectively.

[0005] The ECG button structure provided by this utility model also includes a sliding sleeve, which is disposed on the button support body. The conductive button is provided with a sliding rod, which is slidably disposed on the sliding sleeve in the direction inward and outward of the housing. The sliding rod is connected to the user contact part.

[0006] In the ECG button structure provided by this utility model, the button support is electrically connected to the motherboard, both the button support and the sliding sleeve are made of conductive material, and the end of the conductive elastic element away from the user contact part is connected to the sliding sleeve.

[0007] In the ECG button structure provided by this utility model, the conductive elastic element includes a first conductive spring, which is sleeved on the sliding rod along the axial direction of the sliding rod.

[0008] In the ECG button structure provided by this utility model, the sliding sleeve is provided with a plurality of auxiliary support ears on its periphery. The auxiliary support ears are located close to the user contact portion. The conductive elastic element includes a second conductive spring, and at least one of the two ends of the second conductive spring abuts against the auxiliary support ears and the user contact portion respectively.

[0009] In the ECG button structure provided by this utility model, the sliding sleeve is provided with a slot structure on the side away from the user contact part, and the button support is provided with a bayonet structure. The slot structure and the bayonet structure are installed and connected by interference fit.

[0010] In the ECG button structure provided by this utility model, a waterproof seal is provided between the sliding sleeve and the sliding rod.

[0011] In the ECG button structure provided by this utility model, a limiting member is provided on the side of the sliding rod away from the user contact part.

[0012] In the ECG button structure provided by this utility model, at least some of the conductive components among the button support, the conductive button, and the conductive elastic element are provided with a conductivity enhancement layer.

[0013] Secondly, this utility model provides a wearable device, including the aforementioned ECG button structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In the technical solution of this utility model, by using a conductive button as a user contact electrode and directly connecting it to the motherboard through at least one conductive elastic element, the conductive button retains both the mechanical sliding touch function and acts as an ECG acquisition electrode. The conductive elastic element maintains a deformable and stable electrical connection when the button slides or is subjected to changes in force, avoiding exposed wires, additional electrodes and complex connectors. This achieves structural and electrical integration of the button and ECG electrode, reduces parts and assembly steps, improves the reliability of bioelectrical signal transmission, and improves manufacturing costs and user experience, effectively solving the problem of complex button and electrode structures in existing wearable ECG devices. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the ECG button structure in a smart device according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the ECG button structure according to an embodiment of the present invention;

[0019] Figure 3 This is an exploded view of the ECG button structure according to an embodiment of this utility model;

[0020] Figure label explanation:

[0021] 10. Button support; 11. Slot structure;

[0022] 20. Conductive button; 21. User contact part; 22. Sliding rod; 23. Bayonet structure; 24. Waterproof seal; 25. Limiting component;

[0023] 30. Conductive elastic element; 31. First conductive spring; 32. Second conductive spring;

[0024] 40. Sliding sleeve; 41. Support ear; 42. Sleeve sealing ring;

[0025] 50. Housing; 60. Motherboard; 61. Spring; 62. Surface mount button. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] This utility model provides an ECG button structure and wearable device, aiming to solve the technical problem of complex button and electrode structures in existing wearable devices with integrated ECG function.

[0029] Reference Figures 1 to 3 The ECG button structure includes: a housing 50; a main board 60, located within the housing 50, used to identify user biosignals; a button support 10, located inside the housing 50; a conductive button 20, slidably mounted on the button support 10, with a user contact portion 21 at one end away from the button support 10, located outside the housing 50; and at least one conductive elastic element 30, with both ends electrically connected to the user contact portion 21 and the main board 60, respectively. This structure includes a housing 50 made of metal or high-strength engineering plastic, which not only forms the main exterior of the device but also provides installation space and mechanical protection for internal components. The main board 60, located inside the housing 50, integrates electronic components such as a biosignal acquisition chip, signal amplification circuit, analog-to-digital converter, and microprocessor, used to receive and process weak bioelectrical signals from the user's body surface and identify ECG signal characteristics. Additionally, a surface-mount button 62 is also provided on the main board. The button support 10 is fixed inside the housing 50, providing guidance and support for the conductive button 20, ensuring stable sliding along a predetermined axis during pressing and preventing skewing. The conductive button 20 is made entirely of conductive metal, such as stainless steel, copper alloy, or plastic with a conductive coating. It includes a user contact portion 21 located outside the housing 50 and a sliding rod 22 located inside the housing 50. The user contact portion 21 is exposed outside the device for direct contact by the user's fingers. When the user holds the device with one hand and presses the user contact portion 21 with their thumb, the patch button 62 is triggered to close, realizing device function control. At the same time, this contact action also provides a signal acquisition interface for ECG detection.

[0030] At least one conductive elastic element 30 is disposed in this structure, one end of which is electrically connected to the connection part of the conductive button 20 or the user contact part 21, and the other end is directly or indirectly in contact with the corresponding electrical connection point on the motherboard 60. As a conductive path, it continuously conducts the bioelectrical signals collected by the user contact part 21 to the motherboard 60, thereby achieving ECG signal acquisition. In specific implementations, the conductive elastic element 30 can establish a stable electrical connection with the motherboard 60 directly or indirectly, and achieve signal pickup through sliding contact or fixed connection with the conductive button 20. This integrated design allows for a high degree of integration between the originally independent button structure and the ECG electrode structure, eliminating the need for additional dedicated electrodes and signal lines, significantly simplifying the internal structure. Furthermore, the surface of the conductive button 20 can be treated with a skin-friendly coating, such as a PVD coating or a nano-coating, to improve tactile feel and corrosion resistance.

[0031] In the technical solution of this utility model, by using the conductive button 20 as the user contact electrode and directly connecting it to the motherboard 60 through at least one conductive elastic element 30, the conductive button 20 retains both the mechanical sliding touch function and acts as an ECG acquisition electrode. The conductive elastic element 30 maintains a deformable and stable electrical connection when the button slides or is subjected to changes in force, thus avoiding exposed wires, additional electrodes and complex connectors. This achieves structural and electrical integration of the button and ECG electrode, reduces parts and assembly steps, improves the reliability of bioelectrical signal transmission, and improves manufacturing costs and user experience, effectively solving the problem of complex button and electrode structures in existing wearable ECG devices.

[0032] In one embodiment, the ECG button structure further includes a sliding sleeve 40, which is disposed on the button support 10. The conductive button 20 is provided with a sliding rod 22, which is slidably disposed on the sliding sleeve 40 in the direction inward and outward of the housing 50. The sliding rod 22 is connected to the user contact portion 21. The sliding sleeve 40 is fixedly disposed on the button support 10 and forms a sliding fit structure with the sliding rod 22 of the conductive button 20. The sliding sleeve 40 can be made of metal or engineering plastic, and its inner diameter is adapted to the outer diameter of the sliding rod 22 to form a clearance fit or transition fit, so that the sliding rod 22 can slide smoothly and steadily in the direction inward and outward (i.e., axially) of the housing 50, effectively preventing the conductive button 20 from shaking or getting stuck during pressing, thereby ensuring a consistent and reliable button operation feel.

[0033] The sliding rod 22, as an internal extension of the conductive button 20, is typically integrally formed with the user contact portion 21 or fixedly connected via a conductive method. Its material is also a conductive metal, such as stainless steel or copper alloy, to ensure conductive continuity from the user contact portion 21 to the internal circuitry. When the user presses the user contact portion 21 located outside the housing 50, the pressing force is transmitted through the sliding rod 22 and, guided by the sliding sleeve 40, causes the entire conductive button 20 to move along its axial direction. During this process, the conductive elastic element 30 connected to the sliding rod 22 or the conductive button 20 is compressed, providing a restoring elastic force. Simultaneously, since the sliding rod 22 is electrically connected to the conductive elastic element 30, the bioelectrical signals of the human body can be transmitted to the mainboard 60 through the user contact portion 21, the conductive button 20 body, the sliding rod 22, and the conductive elastic element 30, enabling continuous acquisition of electrocardiogram (ECG) signals. The conductive button 20 moves along its axial direction and presses against the patch button 62, triggering the patch button 62 to press down, completing the button closure signal input.

[0034] In one embodiment, the button support 10 is electrically connected to the motherboard 60. Both the button support 10 and the sliding sleeve 40 are made of conductive materials. The end of the conductive elastic element 30 away from the user contact portion 21 is connected to the sliding sleeve 40. The sliding sleeve 40 is fixed to the button support 10. Both are conductive materials and achieve electrical conductivity through welding, conductive adhesive bonding, or elastic electrical contacts, thereby establishing an electrical connection between the button support 10 and the motherboard 60. The button support 10 may be designed with conductive pins or metal pads, which are directly soldered to the corresponding circuit solder points on the motherboard 60, thereby connecting the end of the entire conductive path to the signal processing circuit. For the conductive connection method using elastic electrical contacts, a spring piece 61 can be pre-set on the motherboard 60, which abuts against the button support 10 to achieve elastic connection.

[0035] The end of the conductive elastic element 30 away from the user contact portion 21 is no longer directly connected to the motherboard 60, but is connected to the outer wall or end of the sliding sleeve 40, for example, by crimping, spot welding or wrapping to achieve a reliable electrical connection. When the user's finger touches the user contact portion 21 of the conductive button 20, the bioelectric signal is transmitted sequentially through the user contact portion 21, the conductive button 20 body, the sliding rod 22, the conductive elastic element 30, the sliding sleeve 40, and the button support 10, and finally to the motherboard 60 for recognition and processing, forming a complete and low-impedance conductive path.

[0036] The advantage of the structural design in the above embodiment lies in transforming the signal path, which originally required independent wiring or long-distance leads, into direct conduction through the internal metal structural components of the device. This not only reduces additional connecting parts and assembly processes but also lowers the risk of signal interruption due to loose connections or oxidation, thereby improving the overall structural stability and durability. Furthermore, since the conductive elastic element 30 only needs to be connected to the fixed-position sliding sleeve 40, rather than aligning with tiny solder points on the motherboard 60, this significantly reduces assembly difficulty and facilitates automated production.

[0037] In one embodiment, the conductive elastic element 30 includes a first conductive spring 31, which is sleeved on the sliding rod 22 along its axial direction. To improve the uniformity of button operation feel, the stability of signal acquisition, and the reliability of the mechanical structure, the conductive elastic element 30 includes a first conductive spring 31 sleeved along the axial direction of the sliding rod 22. The first conductive spring 31 is sleeved on the outer periphery of the sliding rod 22 along its axial direction, mainly undertaking the functions of axial reset force of the button and main signal transmission path. One end of the spring abuts against the user contact portion 21, and the other end abuts against the sliding sleeve 40, forming a conductive and elastic circuit along the axis of the sliding rod 22. The first conductive spring fitted onto the sliding rod 22 serves as the main elastic structure. When compressed and rebounding, it is guided by the sliding rod 22, which suppresses the lateral deviation caused by the physical properties of the spring itself in the radial direction of the pressing control of the entire ECG button structure along the axis of the sliding rod 22. This makes the ECG button structure feel more stable during use and less likely to rub against surrounding components that may come into contact, such as the housing 50, thus extending the service life of the entire conductive button 20.

[0038] Furthermore, the sliding sleeve 40 is provided with a plurality of auxiliary support ears 41 on its periphery. The auxiliary support ears 41 are located close to the user contact portion 21. The conductive elastic element 30 includes a second conductive spring 32, and at least one of the second conductive springs 32 has its two ends abutting against the auxiliary support ears 41 and the user contact portion 21, respectively. In addition to the first conductive spring 31 described in the previous embodiment, a second conductive spring 32 that works in conjunction with it is further provided. A plurality of auxiliary support ears 41 are provided extending outward from the periphery of the sliding sleeve 40. These auxiliary support ears 41 are evenly distributed around the sliding sleeve 40 and are located close to the user contact portion 21. At least one second conductive spring 32 is provided, and its two ends elastically abut against the bottom surface of the auxiliary support ears 41 and the side edge of the connecting portion of the user contact portion 21 of the conductive button 20, respectively. When the user presses the user contact portion 21, the second conductive spring 32 is compressed simultaneously, providing an auxiliary elastic restoring force. This multi-spring parallel structure design ensures more even force distribution on the buttons during pressing, avoiding tilting or jamming caused by single-point force application, significantly improving button feel and operational reliability. Simultaneously, the second conductive spring 32, as a parallel conductive path, together with the first conductive spring 31, forms a redundant signal transmission path. Even if one spring experiences poor contact due to prolonged use, the other spring can still maintain continuous signal acquisition, greatly improving the stability of ECG detection and product lifespan.

[0039] In specific implementations, the second conductive spring 32 can be a small helical spring or a sheet spring, and its number can be adjusted according to the button size and the required elastic force. It is usually set to an even number to achieve symmetrical force distribution. The auxiliary support ear 41 can be integrally formed with the sliding sleeve 40, such as through metal stamping or injection molding processes, to ensure structural strength and positional accuracy. Furthermore, the first conductive spring 31 and the second conductive spring 32 can use the same or different elastic coefficients to adjust the total pressing force and travel characteristics of the button, meeting the operating preferences of different users. In the above embodiments, the multi-point support structure achieved through multiple springs helps to form a more stable electrical contact network between the conductive button 20 and the sliding sleeve 40. Combined with surface gold plating, this effectively reduces the overall contact resistance and improves the acquisition quality of weak bioelectrical signals.

[0040] In one embodiment, the sliding sleeve 40 has a slot structure 11 on the side away from the user contact portion 21, and the button support 10 has a bayonet structure 23. The slot structure 11 and the bayonet structure 23 are connected by an interference fit. To achieve a fast, reliable, and stable mechanical and electrical connection between the sliding sleeve 40 and the button support 10, the sliding sleeve 40 has a slot structure 11 on the side away from the user contact portion 21, i.e., the end facing the inside of the housing 50, while the button support 10 has a corresponding bayonet structure 23. The two are connected by an interference fit. The slot structure 11 can be designed as an annular groove, a radial boss, or multiple symmetrically distributed slots, while the bayonet structure 23 can be a matching elastic buckle, a protrusion, or an openable U-shaped spring structure. During assembly, the sliding sleeve 40 is inserted into the mounting hole of the button support 10. When the slot structure 11 aligns with the bayonet structure 23, the bayonet structure 23 is embedded into the slot structure 11 under the action of elasticity, forming a firm axial limit to prevent the sliding sleeve 40 from loosening, falling off, or rotating during use. This interference fit connection method is not only simple to operate and requires no additional fasteners, which helps to improve the efficiency of automated assembly, but also ensures the positional accuracy and stability of the sliding sleeve 40 on the button support 10, thereby ensuring the straightness and consistency of the sliding of the conductive button 20.

[0041] Since both the sliding sleeve 40 and the button support 10 are made of conductive material, and they achieve large-area metal contact through the slot structure 11 and the bayonet structure 23, this mechanical connection also constitutes a reliable electrical connection path. This allows the bioelectrical signals transmitted from the conductive elastic element 30 to the sliding sleeve 40 to be conducted efficiently and with low impedance to the button support 10, and finally to the motherboard 60. To enhance the reliability of the electrical connection, gold plating can be applied to the contact surfaces of the slot structure 11 and the bayonet structure 23 to reduce contact resistance and prevent oxidation. In addition, the mating surfaces of the slot structure 11 and the bayonet structure 23 can be beveled or toothed to further improve the vibration and pull-out resistance of the connection, ensuring that the structure and electrical performance remain stable even under frequent use or external impacts.

[0042] In one embodiment, a waterproof seal 24 is provided between the sliding sleeve 40 and the sliding rod 22. To effectively prevent external moisture, sweat, or dust from entering the device along the sliding path of the conductive button 20, thereby ensuring the normal operation and long-term reliability of the internal electronic components, a radial waterproof seal 24 is provided between the sliding sleeve 40 and the sliding rod 22. This radial waterproof seal 24 is typically an annular structure, such as an O-ring, a U-ring, or a resilient lip seal, made of a material with good elasticity, aging resistance, and waterproof properties, such as silicone, fluororubber, or EPDM rubber. During assembly, the radial waterproof seal 24 is pre-pressed between the inner wall of the sliding sleeve 40 and the outer wall of the sliding rod 22, typically positioned near the exterior of the housing 50, to form the first waterproof barrier. When the user presses the user contact portion 21 of the conductive button 20, the sliding rod 22 slides axially within the sliding sleeve 40. The radial waterproof seal 24 maintains continuous radial contact pressure with the outer surface of the sliding rod 22 through its elastic deformation, ensuring a good seal even during repeated sliding and effectively preventing liquids and particles from seeping into the housing 50 from the button opening. Furthermore, a sleeve sealing ring 42 is provided between the outer surface of the sliding sleeve and the housing 50, serving the same function as the aforementioned waterproof seal 24. This sealing structure not only meets the basic waterproof and dustproof requirements of wearable devices in daily use, such as achieving IP67 or IP68 protection levels, but is also particularly suitable for scenarios where users perform electrocardiogram measurements during exercise, sweating, or in humid environments, ensuring the device can still operate safely and stably when in contact with moist skin.

[0043] In practical implementation, the inner wall of the sliding sleeve 40 may be provided with an annular groove for accommodating the sealing ring, to accurately position and prevent the seal from shifting during movement. Simultaneously, the surface of the sliding rod 22 in contact with the seal should maintain a high degree of smoothness and flatness to reduce frictional resistance and wear, thereby extending the service life of the seal. Furthermore, to further enhance waterproofing performance, double or multiple layers of radial waterproof seals 24 can be provided to form a multi-layer sealing structure, further improving the waterproofing level.

[0044] In one embodiment, the user contact portion 21 has an anti-slip structure on the side facing the outer side of the housing 50. To improve the tactile feel and safety during operation, and to prevent finger slippage during pressing, especially when the user's hands are sweaty or in motion, ensuring stable button operation and ECG signal acquisition, the user contact portion 21 has an anti-slip structure on the side facing the outer side of the housing 50. This anti-slip structure is directly formed on the exposed surface of the user contact portion 21. Its function is to increase the friction between the finger and the button, ensuring that the user can achieve a stable electrical connection with relatively low contact pressure, thereby guaranteeing the continuity and accuracy of ECG signal acquisition. Specifically, the anti-slip structure can be implemented using various physical forming methods, such as processing regular or irregular textured surfaces on the surface of the user contact portion 21, such as concentric circles, grid patterns, dot matrix patterns, or striped knurling. Micron-level roughness can also be formed on the surface of metal or composite materials through laser engraving, electrical discharge machining, or injection molding. These textured structures not only effectively prevent finger slippage but also, to a certain extent, increase the actual contact area, which is beneficial to improving the coupling efficiency of bioelectrical signals. In practice, the depth and density of the anti-slip structure need to be optimized to ensure sufficient anti-slip effect while avoiding discomfort or skin damage to users due to excessive sharpness or roughness. Usually, its surface roughness is controlled within a range suitable for human contact.

[0045] Furthermore, the anti-slip structure can be combined with a skin-friendly coating, such as a physical vapor deposition coating on the metal user contact surface 21 to form a titanium or ceramic coating with an anti-slip texture, which improves wear resistance and corrosion resistance while enhancing the aesthetic appeal. In addition, the anti-slip structure can be designed with guiding geometry, such as a centrally raised or tapered curved surface, to guide the user's finger to accurately contact the center area of ​​the button, further improving operational intuitiveness. During ECG measurements, a stable contact state reduces signal noise and baseline drift caused by poor contact, lowering the measurement failure rate.

[0046] In one embodiment, at least some of the conductive components among the external contact, the button support 10, the conductive button 20, and the conductive elastic element 30 have a conductivity enhancement layer on their surfaces. To improve the conductivity, contact reliability, and long-term durability of key conductive components in the ECG button structure, at least some of the conductive components among the conductive button 20, the button support 10, and the conductive elastic element 30 have a conductivity enhancement layer on their surfaces. The main function of the conductivity enhancement layer is to reduce the contact resistance between the conductive components, improve the integrity and stability of bioelectrical signals, especially weak ECG signals, in the transmission path, and simultaneously enhance the corrosion resistance, oxidation resistance, and wear resistance of the component surfaces to cope with the adverse effects of sweat, moisture, and frequent mechanical friction during daily use.

[0047] During actual assembly and use, since there is dynamic or static electrical contact between the conductive elastic element 30 and the sliding rod 22, sliding sleeve 40, or button support 10, the surface conductivity enhancement layer can effectively prevent poor contact caused by metal oxidation or sulfidation, ensuring the continuity and accuracy of ECG signal acquisition. In addition, this enhancement layer can also reduce the coefficient of friction, improve the smoothness of button sliding, and improve the user's operating feel.

[0048] In one embodiment, to precisely control the pressing stroke of the conductive button 20 and prevent the sliding rod 22 from disengaging from the sliding sleeve 40 during rebound, thus ensuring the reliability of the button's movement, a limiting member 25 is provided on the side of the sliding rod 22 away from the user contact portion 21, i.e., the end facing inwards from the device. Specifically, the limiting member 25 can be an independently installed snap ring, elastic retaining ring, or plastic limiting ring, which is fixed to the annular groove at the end of the sliding rod 22 by interference fit or snap-fit.

[0049] This utility model also discloses a wearable device, which includes the button structure described in the above embodiments. The wearable device is an electronic device such as a smartwatch, smart bracelet, or smart ring that is attached to the human body and has health monitoring functions. The ECG button structure is set on the side or edge of the housing 50 as a physical operating component on the device, serving both to enable user control of the device's functions and as a signal acquisition electrode for ECG detection. Specifically, when a user needs to perform ECG monitoring, they only need to activate the measurement function through the application and stably contact the user contact part 21 of the button structure with their finger. A complete bioelectrical signal acquisition circuit is then formed through the conductive button 20, the conductive elastic element 30, and the electrical connection path with the motherboard 60. This wearable device achieves high integration, high reliability, and good human-computer interaction performance. Users do not need to find separate electrodes; they can complete high-quality ECG measurements simply through natural button contact, greatly improving operational convenience and user experience.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A cardiac button structure, characterized in that, include: case; A motherboard, located within the housing, is used to identify user biosignals; A button support body, wherein the button support body is disposed inside the housing; A conductive button is slidably disposed on the button support body, and a user contact portion is provided at the end of the conductive button away from the button support body, and the user contact portion is located outside the housing; At least one conductive elastic element, the two ends of which are electrically connected to the user contact portion and the motherboard, respectively.

2. The ECG button structure according to claim 1, characterized in that, It also includes a sliding sleeve disposed on the button support body, and the conductive button is provided with a sliding rod. The sliding rod is slidably disposed on the sliding sleeve in the direction inward and outward of the housing, and the sliding rod is connected to the user contact part.

3. The ECG button structure according to claim 2, characterized in that, The button support is electrically connected to the motherboard. Both the button support and the sliding sleeve are made of conductive material. The end of the conductive elastic element away from the user contact part is connected to the sliding sleeve.

4. The ECG button structure according to claim 3, characterized in that, The conductive elastic element includes a first conductive spring, which is sleeved on the sliding rod along the axial direction of the sliding rod.

5. The ECG button structure according to claim 2, characterized in that, The sliding sleeve is provided with a plurality of auxiliary support ears on its periphery. The auxiliary support ears are located close to the user contact portion. The conductive elastic element includes a second conductive spring, and at least one of the two ends of the second conductive spring abuts against the auxiliary support ears and the user contact portion, respectively.

6. The ECG button structure according to claim 2, characterized in that, The sliding sleeve has a slot structure on the side away from the user contact part, and the button support has a bayonet structure. The slot structure and the bayonet structure are installed and connected by interference fit.

7. The ECG button structure according to claim 2, characterized in that, A waterproof seal is provided between the sliding sleeve and the sliding rod.

8. The ECG button structure according to claim 1, characterized in that, The user contact area has an anti-slip structure on the side facing the outside of the housing.

9. The button structure according to claim 1, characterized in that, At least some of the conductive components in the button support, the conductive button, and the conductive elastic element have a conductivity enhancement layer on their surfaces.

10. A wearable device, characterized in that, Includes the ECG button structure as described in any one of claims 1 to 9.

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