Key assembly and electronic device

Abstract

The application provides a key assembly and an electronic device. The key assembly comprises a key body, a Hall induction switch and a key switch. The key body comprises a key rod, a first contact part and a main rod part extending in the vertical direction of the first contact part, a limiting sheet groove being arranged on the main rod part; a key tube, a second contact part and a through hole part extending in the vertical direction of the second contact part, a conductive sheet groove being arranged on the through hole part; an elastic piece, the main rod part of the key rod penetrating through the elastic piece and further penetrating through the through hole part of the key tube, the key rod being connected and conducted with the key tube through the elastic piece; a limiting sheet, being installed on the limiting sheet groove, for limiting and fixing the key rod; a conductive sheet, being installed on the conductive sheet groove, being connected and conducted with the key tube, for outputting collected human signals; and a permanent magnet, being installed on the end of the main rod part away from the first contact part. The key assembly of the application can realize the key function and the human signal collection function simultaneously.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a button assembly and an electronic device. Background Technology

[0002] With increasing emphasis on health management, wearable devices such as smartwatches have become widely used. Among them, smartwatches with electrocardiogram (ECG) functionality can monitor users' cardiac health in real time, providing important health data for reference. Currently, smartwatches on the market have some structural design issues. For example, the ECG detection electrodes and buttons are usually set up independently. This not only complicates the watch's structure, increasing manufacturing difficulty and cost, but also occupies space for each electrode and button, hindering the development of miniaturized and thinner watches. Furthermore, the watch buttons have limited functionality, unable to simultaneously collect user physiological data and perform page-turning functions. Therefore, optimizing the structural design of smartwatches to effectively integrate ECG detection electrode functions, page-turning functions, and buttons has become a pressing issue in this field. Utility Model Content

[0003] To address the aforementioned issues, this application provides a button assembly and an electronic device, which can simultaneously perform button functions and human body signal acquisition functions.

[0004] In a first aspect, this application provides a button assembly, which includes a button body, a Hall effect sensor switch, and a button switch, wherein the button body includes: The button lever includes a first contact portion and a main rod portion extending in the vertical direction of the first contact portion. The main rod portion is provided with a limiting plate groove. When the first contact portion of the button lever is touched by a human body, the human body signal acquisition function can be realized. The key tube includes a second contact portion and a through hole portion extending in the vertical direction of the second contact portion, and the through hole portion is provided with a conductive sheet groove. An elastic element is installed between the first contact portion of the button rod and the second contact portion of the button tube. The main rod portion of the button rod passes through the elastic element and further passes through the through hole portion of the button tube. The button rod is connected and connected to the button tube through the elastic element. The limiting piece, installed in the limiting piece groove, is used to limit and fix the button rod; A conductive sheet is installed on the conductive sheet groove and connected to the button tube for conducting electricity, and is used to output the human body signal collected by the first contact part of the button lever; A permanent magnet is installed at the end of the main rod that is away from the first contact part; When the first contact part is pressed, the permanent magnet is displaced, which causes a change in magnetic flux. If the main rod part is not in contact with the button switch, the Hall effect sensor switch is triggered to realize the first button function; if the main rod part is in contact with the button switch, the button switch is triggered to realize the second button function.

[0005] Optionally, the button assembly also includes: The spring is fixed on the circuit board with human body signal detection function. The spring is elastically connected to the conductive sheet to form a conduction path. When the first contact part of the button is touched by the human body, the collected human body signal is transmitted to the circuit board through the spring.

[0006] Optionally, a first waterproof ring groove is provided on the main rod section; The button assembly also includes a waterproof ring for the button lever, which is installed in the groove of the first waterproof ring.

[0007] Optionally, a second waterproof ring groove is provided on the through hole portion; The button assembly also includes a waterproof ring for the button tube, which is installed in the groove of the second waterproof ring.

[0008] Optionally, the conductive sheet is provided with a U-shaped groove, and the conductive sheet is fixed by the U-shaped groove and the conductive sheet groove.

[0009] Optionally, the surfaces of the first contact portion of the button lever, the elastic element, and the second contact portion of the button tube are plated with gold to increase conductivity.

[0010] Optionally, the conductive sheet and the key tube are fixed by laser spot welding.

[0011] Optionally, the elastic element includes at least one spring.

[0012] Optionally, the limiting piece is semi-circular.

[0013] Secondly, this application provides an electronic device, including a heart rate mainboard, a control mainboard, a mid-frame, and a button assembly as provided in the first aspect. The mid-frame has a button hole, the button body passes through the button hole and is fixed to the mid-frame, the Hall effect sensor switch and the button switch are fixed to the control mainboard, and the human body signal collected by the button body is transmitted to the heart rate mainboard.

[0014] This application provides a button assembly and electronic device. The button lever is connected to the button tube via an elastic element, and a conductive sheet is also connected to the button tube. When the first contact portion of the button lever is pressed, a button function is achieved. If the main lever is not in contact with the button switch, a Hall effect sensor switch is triggered, achieving a first button function. If the main lever is in contact with the button switch, the button switch is triggered, achieving a second button function. When the first contact portion of the button lever is touched by a human body, a human body signal acquisition function is achieved, and the acquired human body signal is output externally through the conductive sheet. The button assembly provided in this application combines the button function and the human body signal detection electrode function into one, and different pressing operations can achieve different button functions, simplifying the internal structure of the electronic device and facilitating miniaturization and thinner design. Through a reasonable design of the conductive structure of the button assembly, the button function and the detection electrode function are independent of each other and do not interfere with each other. The acquired human body signal is output externally through the conductive sheet of the button assembly. During daily use of the button function, the state of the conductive sheet is not affected, improving the stability of button operation and the reliability of human body signal transmission. While operating the buttons, users can detect human body signals, which improves the convenience and user experience of using the device and meets users' needs for multiple functions in smart wearable devices. Attached Figure Description

[0015] Figure 1 This is an exploded view of the button body in one embodiment of this application; Figure 2 This is a schematic diagram of the combined button body structure in one embodiment of this application; Figure 3 This is a schematic diagram of the structure of an electronic device in one embodiment of this application. Figure 1 ; Figure 4 This is a schematic diagram of the structure of an electronic device in one embodiment of this application. Figure 2 .

[0016] Figure label: 601-Button lever; 6011-First contact part; 6012-Main rod part; 6013-Limiting plate groove; 6014-First waterproof ring groove; 602-Button rod waterproof ring; 603 - Elastic component; 604 - Key tube; 6041 - Second contact part; 6042 - Through hole part; 6043 - Conductive sheet groove; 6044 - Second waterproof ring groove; 605-Key tube waterproof ring; 606 - Limiting plate; 607 - Conductive sheet; 608-Permanent magnet; 101 - Screen assembly; 201 - Mid-frame; 301 - Bottom shell assembly; 401 - Control board; 402 - Push button switch; 403 - Hall effect sensor switch; 501 - Heart rate control motherboard; 502 - Contact spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] One embodiment of this application provides a button assembly that can be applied to electronic devices. The button assembly includes a button body, a Hall effect sensor switch, and a push-button switch, which are disposed on a circuit board with button control function. Figure 1 This is an exploded view of the button itself. Figure 2 This is a schematic diagram of the assembled button body. (Reference) Figure 1 and Figure 2 The button body includes: a button lever 601, a button tube 604, an elastic element 603, a limiting piece 606, a conductive piece 607, and a permanent magnet 608, wherein... The button lever 601 specifically includes a first contact portion 6011 and a main rod portion 6012 extending in the vertical direction of the first contact portion 6011. The main rod portion 6012 is provided with a limiting piece groove 6013. When the first contact portion 6011 of the button lever 601 is touched by a human body, the human body signal acquisition function can be realized. The key tube 604 specifically includes a second contact portion 6041 and a through hole portion 6042 extending in the vertical direction of the second contact portion 6041. The through hole portion 6042 is provided with a conductive sheet groove 6043. The elastic element 603 is installed between the first contact portion 6011 of the button rod and the second contact portion 6041 of the button tube. The main rod portion 6012 of the button rod 601 passes through the elastic element 603 and further passes through the through hole portion 6042 of the button tube 604. The button rod 601 is connected and conductive to the button tube 604 through the elastic element 603. The limiting piece 606 is installed on the limiting piece groove 6013 to limit and fix the button rod 601; The conductive sheet 607 is installed on the conductive sheet groove 6043 and connected to the button tube 604 for conduction. The conductive sheet 607 is used to output the collected human body signal to the outside. The permanent magnet 608 is installed at the end of the main rod 6012 away from the first contact part 6011; When the first contact portion 6011 of the button lever 601 is pressed, the permanent magnet 608 is displaced, which causes a change in magnetic flux. If the main lever portion 6012 is not in contact with the button switch, the Hall effect sensor switch is triggered to realize the first button function; if the main lever portion 6012 is in contact with the button switch, the button switch is triggered to realize the second button function.

[0024] In the above embodiment, the specific conduction path of the collected human body signal is button lever 601 - elastic element 603 - button tube 604 - conductive sheet 607.

[0025] refer to Figure 1 and Figure 2 The permanent magnet 608 is designed as a ring with a central hole, and is sleeved through the central hole to the end of the main rod 6012 away from the first contact part 6011.

[0026] It is understandable that the main stem 6012 of the button lever is directly opposite the push-button switch, with a certain gap between them. The Hall effect sensor switch is located on one side of the push-button switch. When the button lever is lightly pressed, it does not contact the push-button switch, and the push-button switch is not triggered. However, the button lever 601 will move, causing the permanent magnet 608 mounted on it to move. When the permanent magnet 608 moves, it causes a change in magnetic flux. The Hall effect sensor switch senses this change in magnetic flux and converts the displacement signal into an electrical signal. This signal is then controlled by software to achieve the first button function, such as page turning or scrolling on the display interface. When the button lever 601 is pressed and held, it contacts the push-button switch, triggering the push-button switch and achieving the second button function, such as selection or return.

[0027] Only one of the Hall effect sensor switch and push button switch can be triggered at any given time; they cannot be triggered simultaneously.

[0028] Furthermore, according to one embodiment of this application, the button assembly may further include: a spring contact, which is fixed to a circuit board with human body signal detection function. The spring contact is elastically connected to the conductive sheet 607 to form a conductive path. When the first contact portion 6011 of the button lever 601 is touched by a human body, the collected human body signal is transmitted to the circuit board through the spring contact. The specific conductive path is: button lever 601 - elastic element 603 - button tube 604 - conductive sheet 607 - spring contact.

[0029] Furthermore, according to an embodiment of this application, referring to Figure 1 The main rod 6012 is provided with a first waterproof ring groove 6014; The button assembly also includes a button rod waterproof ring 602, which is installed on the first waterproof ring groove 6014. This embodiment provides two button rod waterproof rings 602, and the button rod 601 and the button tube 604 achieve waterproofing through an interference fit of the button rod waterproof rings 602.

[0030] Further, refer to Figure 1 The through hole 6042 is provided with a second waterproof ring groove 6044; The button assembly also includes a button tube waterproof ring 605, which is installed on the second waterproof ring groove 6044. In this embodiment, the button tube waterproof ring 605 achieves the waterproof function of the outer ring of the button tube.

[0031] As one implementation method, refer to Figure 1 and Figure 2 The conductive sheet 607 has a U-shaped groove, which tightly fits and fixes the conductive sheet 607 to the conductive sheet groove 6043. The U-shaped groove makes the fixing of the conductive sheet 607 and the button tube 604 more reliable. Alternatively, the conductive sheet 607 and the button tube 604 can be fixed by laser spot welding, which is simple to assemble, has low resistance, and ensures 100% reliable connection.

[0032] In one embodiment, the elastic element 603 includes at least one spring. (See reference) Figure 1 The elastic element 603 includes three springs. The button lever 601 is electrically connected to the button tube 604 through the elastic element 603 formed by these three springs. The first contact portion 6011 of the button lever, the springs, and the second contact portion 6041 of the button tube are all gold-plated to increase conductivity. The three springs ensure reliable contact. The button lever 601, button tube 604, and conductive sheet 607 are made of materials with good conductivity, such as stainless steel. Through the spring rebound force, the button lever 601 and the button tube 604 are in tight contact, further improving the button's conductivity and reliability.

[0033] The button lever 601 is fixed and limited by the limiting piece 606, realizing the function of the button lever 601 moving back and forth. In this embodiment, the limiting piece 606 is semi-circular.

[0034] The button assembly provided in this application embodiment has a button lever connected to a button tube via an elastic element, and a conductive sheet connected to the button tube. When the first contact portion of the button lever is pressed, a button function is realized. If the main lever is not in contact with the button switch, the Hall effect sensor switch is triggered, realizing the first button function. If the main lever is in contact with the button switch, the button switch is triggered, realizing the second button function. When the first contact portion of the button lever is touched by a human body, a human body signal acquisition function is realized, and the acquired human body signal is output to the outside through the conductive sheet. The button assembly provided in this application combines the button function and the human body signal detection electrode function into one, and different pressing operations can realize different button functions, simplifying the internal structure of electronic devices and facilitating the miniaturization and thinning design of electronic devices. Through the reasonable design of the conductive structure of the button assembly, the button function and the detection electrode function are independent of each other and do not interfere with each other. The acquired human body signal is output to the outside through the conductive sheet of the button assembly. During daily use of the button function, the state of the conductive sheet is not affected, improving the stability of button operation and the reliability of human body signal transmission. While operating the buttons, users can detect human body signals, which improves the convenience and user experience of using the device and meets users' needs for multiple functions in smart wearable devices.

[0035] The button assembly provided in this application can be applied to various electronic devices with human health detection functions, including but not limited to electronic devices integrating functions such as electrocardiogram (ECG), electromyography (EMG), or body fat percentage detection. The human body signals collected by the button assembly, such as bioelectrical signals, are used for ECG detection, body fat detection, etc.

[0036] The electronic device can be a wearable electronic device, such as a watch, bracelet, earphones, helmet (e.g., a virtual reality helmet), etc., or a non-wearable device, such as a portable electronic device with human health monitoring functions, such as a mobile phone, tablet, or laptop. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running or other operating systems. It should be understood that the aforementioned electronic device may also not be a portable electronic device, but rather a desktop computer capable of monitoring human health, etc., and this embodiment is not limited to this.

[0037] Figure 3 A schematic diagram of the structure of a smartwatch using the button assembly described in the above embodiments. Figure 1 , Figure 4 A schematic diagram of the structure of a smartwatch using the button assembly described in the above embodiments. Figure 2 , Figure 3 The button itself is not installed. Figure 4 The center button body is installed in the button hole of the middle frame 201.

[0038] refer to Figure 3 and Figure 4 This application provides an electronic device, such as a smartwatch, comprising: a screen assembly 101, a mid-frame 201, a bottom shell assembly 301, a control motherboard 401, a button switch 402, a Hall effect sensor switch 403, a heart rate mainboard 501, and a spring contact 502. The mid-frame 201 has a button hole 202. The button switch 402, the Hall effect sensor hole 403, and the spring contact 502 are part of the button assembly. The button switch 402 and the Hall effect sensor switch 403 are fixed to the control motherboard 401, and the spring contact 502 is fixed to the heart rate mainboard 501. The heart rate mainboard 501 is elastically connected to a conductive sheet 607 via the spring contact 502, forming a conductive path. In the aforementioned embodiment, the button body portion of the button assembly passes through the button hole 202 and is fixed to the mid-frame 201. The human body signal collected by the button body is transmitted to the heart rate mainboard 501 via the spring contact 502.

[0039] When the first contact portion of the button lever is pressed, the permanent magnet shifts, causing a change in magnetic flux. A light press prevents contact between the main lever and the button switch, triggering the Hall effect sensor and enabling the first button function. A long press brings the main lever into contact with the button switch, triggering the button switch and enabling the second button function. When the first contact portion of the button lever is touched by a human body, a human signal can be collected and transmitted to the heart rate mainboard via a spring contact for electrocardiogram (ECG) detection. This embodiment not only integrates button functionality and human signal acquisition, but also allows different pressing operations to achieve different button functions.

[0040] The above description is merely a specific embodiment 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 technical scope 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 button assembly, characterized in that, The button assembly includes a button body, a Hall effect sensor switch, and a button switch, wherein the button body includes: The button lever includes a first contact portion and a main rod portion extending in the vertical direction of the first contact portion. The main rod portion is provided with a limiting piece groove. When the first contact portion of the button lever is contacted by a human body, the human body signal acquisition function can be realized. The key tube includes a second contact portion and a through hole portion extending in the vertical direction of the second contact portion, wherein the through hole portion is provided with a conductive sheet groove; An elastic element is installed between the first contact portion and the second contact portion of the button rod. The main rod portion of the button rod passes through the elastic element and further passes through the through hole portion of the button tube. The button rod is connected and conductive to the button tube through the elastic element. A limiting piece is installed on the groove of the limiting piece to limit and fix the button rod; A conductive sheet is installed on the groove of the conductive sheet and connected to the key tube for conducting electricity, and is used to output the human body signal collected by the first contact part; A permanent magnet is installed at the end of the main rod that is away from the first contact portion; When the first contact portion is pressed, the permanent magnet is displaced, which causes a change in magnetic flux. If the main rod portion is not in contact with the button switch, the Hall effect sensor switch is triggered to realize the first button function; if the main rod portion is in contact with the button switch, the button switch is triggered to realize the second button function.

2. The button assembly according to claim 1, characterized in that, The button assembly also includes: A spring is fixed on a circuit board with human body signal detection function. The spring is elastically connected to the conductive sheet to form a conductive path. When the first contact part is touched by a human body, the collected human body signal is transmitted to the circuit board through the spring.

3. The button assembly according to claim 1, characterized in that, The main rod is provided with a first waterproof ring groove; The button assembly further includes a waterproof ring for the button lever, which is installed on the groove of the first waterproof ring.

4. The button assembly according to claim 1, characterized in that, The through-hole portion is provided with a second waterproof ring groove; The button assembly further includes a button tube waterproof ring, which is installed on the groove of the second waterproof ring.

5. The button assembly according to claim 1, characterized in that, The conductive sheet is provided with a U-shaped groove, and the conductive sheet is tightly fitted and fixed to the conductive sheet groove through the U-shaped groove.

6. The button assembly according to claim 1, characterized in that, The surfaces of the first contact portion, the elastic element, and the second contact portion are plated with gold to increase electrical conductivity.

7. The button assembly according to claim 1, characterized in that, The conductive sheet and the key tube are fixed together by laser spot welding.

8. The button assembly according to claim 1, characterized in that, The elastic element includes at least one spring.

9. The button assembly according to claim 1, characterized in that, The limiting piece is semi-circular.

10. An electronic device, characterized in that, The electronic device includes a heart rate mainboard, a control mainboard, a mid-frame, and a button assembly as described in any one of claims 1 to 9. The mid-frame has a button hole, the button body passes through the button hole and is fixed to the mid-frame, the Hall effect sensor switch and the button switch are fixed to the control mainboard, and the human body signal collected by the button body is transmitted to the heart rate mainboard.

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