CN114582648A

CN114582648A - Electronic equipment

Info

Publication number: CN114582648A
Application number: CN202210185375.4A
Authority: CN
Inventors: 黄锐程
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-06-03

Abstract

The application discloses electronic equipment belongs to electronic equipment technical field. The key structure includes: the device comprises a key, a circuit board and a pressing detection assembly; the key is inserted into a key through hole formed in a frame body of the electronic equipment and can move along the axis of the key through hole, the key is electrically connected with a measuring circuit through a metal elastic needle, and the key is a measuring electrode of the measuring circuit; the pressing detection assembly comprises a magnetic field generation unit, a magnetic field detection unit and a control unit, wherein the magnetic field generation unit is used for generating a magnetic field, the magnetic field generation unit is arranged on the key or the circuit board, and the control unit judges whether the key is pressed according to the magnetic field intensity detected by the magnetic field detection unit. In the application, the magnetic field generating unit is arranged on the key to generate the magnetic field, so that whether the key is pressed or not is judged according to the magnetic field intensity detected by the magnetic field detecting unit, the service life of the key structure is prolonged, and the key triggering logic is simple and good in effect.

Description

Electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to electronic equipment.

Background

Common smart machine is provided with the button usually on the market at present, and when the button was pressed hard, the button can take metal shrapnel to move in, pushes down built-in contact, accomplishes the action that a button triggered, and when the last power release back of exerting of button, the spring of inner mechanism can drive button and metal shrapnel return.

However, the above design has at least the following problems: in the use, the button is through pushing down metal shrapnel then triggering built-in contact, and consequently the stress that metal shrapnel bore can be great relatively, and the metal shrapnel department of bending deformation ratio is great this moment, appears metal fatigue easily, and the metal shrapnel resilience can appear after long-term the use not enough, leads to the button then to contact poorly with built-in contact.

Disclosure of Invention

The purpose of the embodiment of the application is to provide an electronic equipment, can solve among the prior art metal shrapnel and appear metal fatigue easily, it is not enough to appear metal shrapnel resilience force after long-term the use easily, leads to button and built-in contact bad problem then.

An embodiment of the present application provides an electronic device, which includes:

key, circuit board and pressing detection assembly

The key is inserted into a key through hole formed in a frame body of the electronic equipment and can move along the axis of the key through hole, the key is electrically connected with a measuring circuit through a metal spring needle, and the key is a measuring electrode of the measuring circuit;

press the determine module and include magnetic field production unit, magnetic field detecting element and the control unit, the magnetic field production unit is used for producing magnetic field, the magnetic field production unit set up in the button or on the circuit board, the button is followed when the axis motion of button through-hole the magnetic field intensity that the magnetic field detecting element detected changes, the control unit basis the magnetic field intensity that the magnetic field detecting element detected judges whether the button is pressed.

In the embodiment of the application, the magnetic field generating unit is arranged on the key to generate a stable magnetic field, when the position of the key changes, the position of the magnetic field generating unit changes along with the change of the position of the key, the magnetic field intensity detected by the magnetic field detecting unit also changes, and whether the key is pressed or not can be judged according to the magnetic field intensity detected by the magnetic field detecting unit, so that the touch of the key is avoided being realized by adopting contact structures such as metal shrapnels, the service life of the key structure is prolonged, and the key is simple in triggering logic and good in effect.

Drawings

Fig. 1 is a schematic structural diagram of a key structure in the related art;

FIG. 2 is an exploded view of a vector field strength H provided by an embodiment of the present application;

fig. 3 is a schematic diagram of a key structure according to an embodiment of the present disclosure;

fig. 4 is a second schematic diagram of a key structure according to an embodiment of the present application;

fig. 5 is a third schematic view of a key structure according to an embodiment of the present application;

fig. 6 is a fourth schematic view of a key structure provided in the embodiment of the present application;

fig. 7 is a fifth schematic view of a key structure provided in the embodiment of the present application;

fig. 8 is a sixth schematic view of a key structure according to an embodiment of the present application;

fig. 9 is a seventh schematic diagram of a key structure according to an embodiment of the present application;

fig. 10 is an eighth schematic diagram of a key structure according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The electronic device provided in the embodiments of the present application is described in detail with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a key structure in the related art. As shown in fig. 1, in the related art, a metal contact 13 is disposed on a PCB, a metal spring 12 is disposed in a hook shape, one end of the metal spring 12 is fixedly connected to the PCB, and the other end of the metal spring is fixedly connected to an end of a key 11, when an external force is applied to the key 11, the key 11 presses down the metal spring 12 to contact the metal contact 13, so as to implement a key function, and when the external force is removed, the metal spring 12 applies a resilient force to reset the key 11. However, the above structure has at least the following problems: in the process of pushing down, the stress that metal shrapnel 12 bore can be great relatively, the deformation ratio of the department of bending of metal shrapnel 12 this moment is great, metal fatigue appears easily, can appear after long-term the use (press the back many times promptly) that metal shrapnel 12 takes place deformation and unable recovery to the normal position, the resilience force is not enough promptly, then lead to button 11 and built-in metal contact 13 contact failure, lead to the button effect not good, simultaneously, the condition of contact variation also can appear between metal shrapnel 12 and the button 11. Moreover, in some designs, the key 11 is made of a metal material and is used as a measuring electrode for ECG measurement, and if the key 11 is in poor contact with the built-in metal contact 13, the ECG signal cannot be captured, or the captured ECG signal is poor or even invalid, so that the accuracy of ECG measurement is reduced, and even the ECG signal cannot be analyzed and processed in the next step.

From this, this application one aspect embodiment provides an electronic equipment, and this electronic equipment can be cell-phone, intelligent wrist-watch, intelligent bracelet etc. has seted up the button through-hole in this electronic equipment's the framework. The electronic equipment in the embodiment of the application comprises a key, a circuit board and a pressing detection assembly, wherein the key is movably inserted into a key through hole formed in a frame body of the electronic equipment, the key can do linear motion along the axis of the key through hole, in addition, the key is electrically connected with a measurement circuit through a metal elastic needle, the key is multiplexed into one measurement electrode of the measurement circuit, at least part of the key is made of metal materials, namely, the key can be used as a conventional trigger key and can also be used as the measurement electrode of the measurement circuit, the type of the measurement circuit comprises but is not limited to an ECG measurement circuit, and therefore the corresponding detection function is realized. The pressing detection assembly comprises a magnetic field generation unit, a magnetic field detection unit and a control unit, wherein the magnetic field generation unit is used for generating a magnetic field, the magnetic field detection unit is used for detecting the magnetic field, the magnetic field detected by the magnetic field detection unit can comprise the earth magnetic field and the magnetic field generated by the magnetic field generation unit in the key, the magnetic field generation unit is arranged on the key or the circuit board, exemplarily, under the condition that the magnetic field generation unit is arranged on the key, when the key moves linearly along the axis of the key through hole, the position of the magnetic field generation unit changes accordingly, namely, the distance between the magnetic field generation unit and the magnetic field detection unit changes, the magnetic field intensity detected by the magnetic field detection unit also changes, the magnetic field detection unit sends the detected magnetic field signal to the control unit, and therefore, the control unit can judge whether the key is pressed or not according to the change condition of the magnetic field intensity detected by the magnetic field detection unit, of course, the magnetic field detection unit may be disposed on the key, and the position of the magnetic field generation unit is fixed (that is, the magnetic field generation unit is disposed on the fixed circuit board), so that when the key moves linearly along the axis of the key through hole, the relative position between the key and the circuit board changes, and then whether the key is pressed or not can be determined according to the change of the magnetic field intensity detected by the magnetic field detection unit.

In the embodiment of the application, the magnetic field generating unit is arranged on the key to generate a stable magnetic field, when the position of the key changes, the position of the magnetic field generating unit changes along with the change of the position of the key, and the magnetic field intensity detected by the magnetic field detecting unit also changes, so that whether the key is pressed or not can be judged according to the magnetic field intensity detected by the magnetic field detecting unit, therefore, the touch control of the key by adopting contact structures such as metal shrapnels and the like is avoided, the service life of the key structure is prolonged, and the key triggering logic is simple and the effect is good; moreover, the key is multiplexed into the measuring electrode of the measuring circuit, so that the corresponding measuring function can be realized, and the functions of the key are enriched; in addition, the key is always in good contact with the measuring circuit, so that poor contact is avoided, and the measuring result can be effectively ensured; in addition, the metal elastic needle can also have a supporting (connecting) function, namely, the metal elastic needle is equivalent to a guide rail and can support the key to move left and right, and the consistency of the path of the key in the pressing process is improved.

In some embodiments of the present application, the measurement circuit, the magnetic field detection unit, and the control unit are all fixedly disposed on the circuit board, and the circuit board is disposed in the enclosed region of the frame. The circuit board can be a mainboard of the electronic equipment and can also be other small boards except the mainboard of the electronic equipment, wherein when the measuring circuit, the magnetic field detection unit and the control unit are arranged on the original mainboard of the electronic equipment, the circuit board does not need to be additionally added, and when the measuring circuit, the magnetic field detection unit and the control unit are arranged on the small boards, the circuit board can be conveniently installed so as to place the magnetic field detection unit at a proper position. Optionally, the electronic device may be generally provided with a geomagnetic chip for implementing the navigation function, and therefore the magnetic field detection unit in the embodiment of the present application may reuse the original geomagnetic chip of the electronic device to implement magnetic field intensity detection, that is, the original geomagnetic chip is utilized to detect both the earth magnetic field signal and the magnetic field signal generated by the magnetic field generation unit. At this time, correspondingly, the magnetic field generating unit is arranged on the key, so that the magnetic field intensity detected by the magnetic field detecting unit changes when the key is pressed.

Referring to fig. 2, fig. 2 is an exploded view of a vector magnetic field strength H according to an embodiment of the present application. In some embodiments of the present application, optionally, the magnetic field detection unit is a three-axis magnetic field sensor, and the three-axis magnetic field sensor is capable of detecting magnetic field signals/magnetic field strengths on three axes of x, y, and z. As shown in fig. 2, taking the magnetic field detection unit multiplexing the original geomagnetic chip of the electronic device as an example, for an earth magnetic field signal, a vector magnetic field strength H is obtained, the magnetic field strength H decomposes three components Hx, Hy, and Hz along three axes x, y, and z, and then outputs magnetic field data after sampling by an analog-to-digital conversion circuit inside the three-axis magnetic field sensor, and direction identification can be realized by comparing the magnetic field data with the modeling data of the original earth magnetic field; since the key is provided with the magnetic field generating unit, when the distance between the magnetic field generating unit and the magnetic field detecting unit changes along with the movement of the key, the magnetic field intensity of the position where the magnetic field detecting unit is located also changes, and assuming that the variation of the magnetic field intensity at the moment is delta H, the delta H can be decomposed along three axes of x, y and z to obtain three components of delta Hx, delta Hy and delta Hz, and the variation of the magnetic field intensity on each axis is also analyzed, so that whether the position of the magnetic field generating unit changes or not, namely whether the key is pressed or not can be known by analyzing the data of the components of delta Hx, delta Hy and delta Hz.

In addition, assuming that during the key movement, that is, during the movement of the magnetic field generating unit, the magnetic field strength detected by the magnetic field detecting unit at the first time is H1, and the magnetic field strength detected at the second time is H2, by analyzing and comparing H1 and H2, three components of Hx1, Hy1 and Hz1 are resolved from the magnetic field strength H1, three components of Hx2, Hy2 and Hz2 are resolved from the magnetic field strength H2, so as to be respectively represented as coordinates (Hx1, Hy1, Hz1) and coordinates (Hx2, Hy2 and Hz2) on a three-axis coordinate system, the principle of determining a straight line from two points can be known, a straight line can be marked through the two coordinates, that is to describe the movement trajectory of the magnetic field generating unit, so as to know the advancing direction and the key travel of the key, based on this principle, the key structure in this embodiment has no limitation to the relative positions of the magnetic field generating unit and the magnetic field detecting unit, no matter the two are opposite or have a deflection angle, the motion trail of the key can be captured by the magnetic field detection unit and then calibrated, and therefore the design and installation difficulty of the two can be reduced.

In some embodiments of the present application, the magnetic field generating unit is a magnet or an electromagnet. When the magnetic field generating unit is a magnet, the magnetic field generating unit can be a permanent magnet or the like, the permanent magnet or the like has two polarities of a magnetic north pole N and a magnetic south pole S, the magnet can independently generate a magnetic field when the magnet is adopted as the magnetic field generating unit, and optionally, part or all of the key is formed by the magnet, namely, the magnet is directly adopted to be manufactured into part or all of the structure of the key, so that the structure of the key is simplified. When the magnetic field generating unit is an electromagnet, the magnetic field generating unit can be an electromagnetic coil and the like, the electromagnetic coil is composed of a magnetic core and a coil, when current flows through the coil, the magnetic field can be generated, when the electromagnet is adopted, additional power supply is needed to generate the magnetic field, and at the moment, the coil can be arranged around the periphery of the part of the key, which extends into the frame.

The following describes the key structure in the embodiment of the present application by taking the magnetic field generating unit as an example.

Referring to fig. 3 and fig. 4, fig. 3 is a first schematic diagram of a key structure provided in an embodiment of the present application, and fig. 4 is a second schematic diagram of the key structure provided in the embodiment of the present application. In some embodiments of the present application, the key structure is applied to an electronic device, a frame 22 of the electronic device is provided with a key through hole, the key structure includes a key 21 and a pressing detection component, the key 21 is movably inserted into the key through hole provided in the frame 22, the key 21 can move linearly along an axis of the key through hole, the key 21 can be in a shape of a T-shape disposed on a side, the key 21 includes a first key post 2121, the pressing detection component comprises a magnetic field generation unit, a magnetic field detection unit 23 and a control unit, wherein, the first key post 2121 is made of a magnet and comprises a magnetic N pole and a magnetic S pole, that is, the first key post 2121 is used as a part of the key and is also multiplexed as a magnetic field generating unit to generate a magnetic field, the magnetic field detecting unit 23 is disposed on the circuit board 24, for detecting a magnetic field, the magnetic field detected by the magnetic field detecting unit 23 may include the earth magnetic field and the magnetic field generated by the magnetic field generating unit 2121 in the key 21.

In fig. 3, the key 21 is in a non-pressed state, and in fig. 4, the key 21 is in a pressed state, it can be seen that when the key 21 is pressed and moves linearly along the axis of the key through hole, the position of the first key post 2121 (i.e., the magnetic field generating unit) changes accordingly, that is, the distance between the first key post 2121 (i.e., the magnetic field generating unit) and the magnetic field detecting unit 23 changes, the magnetic field strength detected by the magnetic field detecting unit 23 changes, and the magnetic field detecting unit 23 sends the detected magnetic field signal to the control unit, so that the control unit can determine whether the key 21 is pressed according to the change of the magnetic field strength detected by the magnetic field detecting unit 23.

In the above embodiment, the first key post 2121 of the key 21 is made of a magnet as a magnetic field generating unit. It is understood that the magnet may also be made as a key head of the key 21, or other parts of the key 21, i.e. parts of the key 21, may be constituted by the magnet. For example, the key 21 includes a key head and a key post, and the entire key post is a magnet, and the entire key post serves as a magnetic field generating unit. At this time, in order to reuse the key 21 as an electrode of the measurement circuit, a metal layer may be disposed on the outer surface of the key pillar, one end of the metal spring pin is connected to the measurement circuit, the other end of the metal spring pin is connected to the metal layer, and the metal layer is connected to the key head made of a metal conductive material, so as to implement a corresponding measurement function.

Referring to fig. 5 and fig. 6, fig. 5 is a third schematic diagram of a key structure provided in the embodiment of the present application, and fig. 6 is a fourth schematic diagram of the key structure provided in the embodiment of the present application. In some embodiments of the present application, optionally, on the basis of the key structure in fig. 3 or fig. 4, the key 21 in the key structure includes a key head 211 and a key post 212 that are fixedly connected, the key post 212 includes a first key post 2121 and a second key post 2122, the first key post 2121 is made of a magnet as described in the above embodiments, and is used as a magnetic field generating unit, the first key post 2121 also includes a magnetic N pole and a magnetic S pole, the second key post 2122 and the key head 211 are made of a conductive material, and the first key post 2121 and the second key post 2122 are connected by an insulating layer 2123 to perform an insulating function; the key head 211 constitutes a measuring electrode of a measuring circuit, for example, the measuring circuit may be an ECG measuring circuit, and may be configured to measure a human body bioelectric signal to obtain an electrocardiogram, the key head 211 is reused as one of the measuring electrodes of the measuring circuit, in order to implement connection with the measuring electrode, the key structure further includes a metal pogo pin 26, one end of the metal pogo pin 26 is connected to the second key post 2122, specifically, a portion of the second key post 2122 located inside the frame 22 is connected, and the other end of the metal pogo pin 26 is connected to the circuit board 24, specifically, connected to the measuring circuit on the circuit board 24, the key head 211 and the second key post 2122 are both made of a metal conductive material, and the key head 211 is connected to the second key post 2122, so as to implement electrical connection between the key head 211 and the measuring circuit. Therefore, the key 21 can realize the key function and can also be used as a measuring electrode of a measuring circuit to realize multiplexing; in addition, the key 21 always keeps good contact with the measuring circuit, so poor contact is avoided, and the measuring result can be effectively ensured; in addition, the metal elastic needle can also have a supporting (connecting) function, namely, the metal elastic needle is equivalent to a guide rail and can support the key to move left and right, and the consistency of the path of the key in the pressing process is improved.

In some embodiments of the present application, the key head 211 is made of a non-ferromagnetic material, that is, is made of a non-magnetized metal material, so as to prevent the key head 211 from being magnetized and then adsorbing metal, and prevent the key 21 from being affected by metal impurities. Optionally, when the key 21 is only partially made of a magnet to form the magnetic field generating unit, the other parts except the magnet may be made of waste ferromagnetic materials to avoid adverse effects caused by magnetization as much as possible.

As shown in fig. 3 to 6, in some embodiments of the present application, the key structure further includes an elastic member 25, the elastic member 25 is disposed between the frame 22 and the key 21, and the elastic member 25 can provide a restoring force for the key 21. That is, when the key 21 is pressed, the elastic member 25 is elastically deformed to accumulate an elastic force, and after the external force for pressing the key 21 is removed, the elastic member 25 releases the elastic force to act on the key 21 to restore the key 21 to its original position.

As shown in fig. 5 and 6, in some embodiments, the key 21 in the key structure includes a key head 211 and a key post 212, the key post 212 includes a first key post 2121 and a second key post 2122, the frame 22 further has a groove, the key through hole is formed at a bottom of the groove, the key post 212 is movably inserted into the key through hole, and the elastic element 25 is at least partially disposed in the groove, that is, the groove can be used for accommodating the elastic element 25 and can also play a certain guiding role.

As shown in fig. 5, in some alternative embodiments, the elastic element 25 is a spring, the spring is disposed in the groove and sleeved outside the key post 212, and more specifically, sleeved on the peripheral side of the second key post 2122 of the key post 212, one end of the spring abuts against the groove bottom of the groove, and the other end of the spring abuts against the key head 211. When the push button 21 is pressed, the spring is compressed to accumulate an elastic force, and when the external force for pressing the push button 21 is removed, the spring releases the elastic force to return the push button 21. The structure that adopts the spring has with low costs, sets up simple advantage, but makes whole button structure unsealed easily, has the problem of leaking the dirt.

As shown in fig. 6, in other embodiments of the present application, the elastic member 25 is an elastic plastic ring, specifically, the elastic member 25 includes a first elastic plastic ring 251 and a second elastic plastic ring 252, wherein a diameter of the first elastic plastic ring 251 is smaller than a diameter of the second elastic plastic ring 252, the first elastic plastic ring 251 is fixed to an outer periphery of the key post 212 and located in the groove, more specifically, the first elastic plastic ring 251 is fixed to an outer periphery of the second key post 2122 of the key post 212, and the second elastic plastic ring 252 is fixed to a surface of the key head 211 facing the groove and located outside the groove, it can also be considered that the second elastic plastic ring 252 is also fixed to an outer periphery of the second key post 2122 of the key post 212. Under the condition that button 21 was pressed, first elasticity plastic ring 251 offsets in order to produce deformation with the tank bottom of recess, and second elasticity plastic ring 252 offsets in order to produce deformation with framework 22, thereby, after the external force of pressing button 21 was removed, first elasticity plastic ring 251 and second elasticity plastic ring 252 can release elasticity (restoring force) simultaneously and make button 21 reset, and, first elasticity plastic ring 251 and second elasticity plastic ring 252 can seal the button structure, that is, first elasticity plastic ring 251 can seal the button through-hole, second elasticity plastic ring 252 can seal the recess, thereby play dirt-proof effect.

In some embodiments of the application, when the magnetic field detection unit is a three-axis magnetic field sensor, an axis of a magnetic field component of the three-axis magnetic field sensor is parallel to or coincides with an axis of the key through hole, so that a magnetic line of force generated by the magnetic field generation unit corresponds to one of the magnetic field components of the three-axis magnetic field sensor, and the detection accuracy is improved.

Referring to fig. 7 and 8, fig. 7 is a fifth schematic view of a key structure provided in the embodiment of the present application, and fig. 8 is a sixth schematic view of the key structure provided in the embodiment of the present application. In some embodiments of the present application, on the basis of fig. 5 and fig. 6, the placement position/angle of the circuit board 24 provided with the magnetic field detection unit 23 is adjusted, so that one of the magnetic field components of the three-axis magnetic field sensor (i.e., the magnetic field detection unit 23) corresponds to each other, and at this time, the three-axis magnetic field sensor can more sensitively detect the magnetic field strength change caused by the movement of the position of the magnetic field generation unit 2121 on one magnetic field component axis, thereby improving the detection accuracy.

Referring to fig. 9 and 10, fig. 9 is a seventh schematic diagram of a key structure provided in the embodiment of the present application, and fig. 10 is an eighth schematic diagram of the key structure provided in the embodiment of the present application. In other embodiments of the present application, different from fig. 3 and 4, the main body of the key 21 is made of a magnet, that is, the whole main body of the key 21 is used as a magnetic field generating unit to generate a magnetic field, and at this time, the key 21 does not need to be made of multiple materials, so that the difficulty in making the key 21 can be reduced, and the cost can be saved. Optionally, the key 21 is divided into a key head and a key post, one of the key head and the key post is used as a magnetic N pole, and the other is used as a magnetic S pole. Fig. 9 is different from fig. 10 in that the elastic member 25 in fig. 9 is a spring, and the elastic member 25 in fig. 10 includes a first elastic plastic ring 251 and a second elastic plastic ring 252. In some embodiments of the present application, in order to implement multiplexing the key as the measuring electrode of the measuring circuit, a metal layer may be formed on the outer surface of the key 21, and one end of the metal pogo pin is connected to the measuring circuit, and the other end is connected to the metal layer, so as to implement a corresponding measuring function.

In summary, in the embodiment of the application, the magnetic field generating unit is arranged on the key to generate a stable magnetic field, when the position of the key changes, the position of the magnetic field generating unit changes along with the change of the position of the key, and the magnetic field intensity detected by the magnetic field detecting unit also changes, so that whether the key is pressed or not can be judged according to the magnetic field intensity detected by the magnetic field detecting unit, therefore, the touch of the key is avoided being realized by adopting contact structures such as metal shrapnels and the like, the service life of the key structure is prolonged, and the key triggering logic is simple and the effect is good; moreover, the key is multiplexed into the measuring electrode of the measuring circuit, so that the corresponding measuring function can be realized, and the functions of the key are enriched; in addition, the key is always in good contact with the measuring circuit, so that poor contact is avoided, and the measuring result can be effectively ensured; in addition, the metal elastic needle can also have a supporting (connecting) function, namely, the metal elastic needle is equivalent to a guide rail and can support the key to move left and right, and the consistency of the path of the key in the pressing process is improved.

In some embodiments of the present application, the electronic device specifically includes a key, a circuit board, and a pressing detection assembly, where the pressing detection assembly includes a magnetic field detection unit, a magnetic field generation unit, and a control unit, the key includes a key head and a key post fixedly connected to the key head, the key post includes a first key post and a second key post, the first key post is composed of a magnet and is reused as the magnetic field generation unit; the electronic equipment also comprises a circuit board and an ECG measuring circuit, wherein the magnetic field detection unit and the control unit are arranged on the circuit board, and the circuit board can be arranged in the enclosed area of the frame body; the ECG measuring circuit also can set up on this circuit board to, the one end of metal bullet needle is connected with the second button post of button, and the other end and the ECG measuring circuit of metal bullet needle are connected, and second button post and button head are electrically conductive material, can regard as a measuring electrode of ECG measuring circuit jointly, and keep being connected with ECG measuring circuit through the metal bullet needle, thereby make electronic equipment possess ECG measurement function. Optionally, the ECG measurement circuit further includes a plurality of measurement electrodes in addition to the measurement electrode formed by the second key post and the key head, and when the user wears the electronic device, the measurement electrodes other than the measurement electrode formed by the second key post and the key head contact the surface of the human body, and the second key post and the key head do not contact the surface of the human body. When utilizing ECG measuring circuit to measure the ECG signal of telecommunication, a plurality of measuring electrode contact in order to acquireing the ECG signal of telecommunication with user's body surface, and the user still further through pressing button/button head with the hand, ECG measuring circuit still obtains the ECG signal of telecommunication of human body through metal bullet needle, second button post and button head, realize the ECG and measure finally jointly, and when not carrying out the ECG and measure, through the removal of the magnetic field production unit that sets up on the button, change the magnetic field intensity that magnetic field detection unit detected then, then the control unit can detect out whether the button is pressed according to magnetic field intensity, thereby realize a button function of electronic equipment.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An electronic device is characterized by comprising a key, a circuit board and a pressing detection component,

the key is inserted into a key through hole formed in a frame body of the electronic equipment and can move along the axis of the key through hole, the key is electrically connected with a measuring circuit through a metal elastic needle, and the key is a measuring electrode of the measuring circuit;

2. The electronic device of claim 1, wherein the measurement circuit, the magnetic field detection unit, and the control unit are disposed on the circuit board, the magnetic field generation unit is disposed on the key, and the circuit board is disposed in an enclosed area of the frame.

3. The electronic device according to claim 1, wherein the magnetic field detection unit is a three-axis magnetic field sensor.

4. The electronic device according to claim 1, wherein the magnetic field generating unit is a magnet or an electromagnet, and when the magnetic field generating unit is a magnet, part or all of the key is constituted by the magnet.

5. The electronic device according to claim 4, wherein the key includes a key head and a key post, the key post includes a first key post and a second key post, the first key post is a magnet, the first key post is used as the magnetic field generating unit, the second key post and the key head are both made of conductive materials, an insulating layer is disposed between the first key post and the second key post, one end of the metal elastic needle is connected to the measuring circuit, the other end of the metal elastic needle is connected to the second key post, and the second key post is connected to the key head.

6. The electronic device according to claim 4, wherein the key includes a key head and a key post, the key head and the key post are both magnets, the key head and the key post serve as the magnetic field generating unit, a metal layer is disposed on an outer surface of the key, one end of the metal spring pin is connected to the measuring circuit, and the other end of the metal spring pin is connected to the metal layer.

7. The electronic device of claim 1, wherein the key includes a key head and a key post fixedly connected to the key head, the frame further defines a groove, the key through hole is formed at a bottom of the groove, the key post is movably inserted into the key through hole, and the key structure further includes:

the elastic piece is arranged between the frame body and the keys and at least partially arranged in the grooves, and the elastic piece can provide resetting force for the keys.

8. The electronic device of claim 7, wherein the elastic member is a spring, the spring is disposed in the groove and sleeved on the periphery of the key post, one end of the spring abuts against the bottom of the groove, and the other end of the spring abuts against the key head.

9. The electronic device according to claim 7, wherein the elastic member includes a first elastic plastic ring and a second elastic plastic ring, a diameter of the first elastic plastic ring is smaller than a diameter of the second elastic plastic ring, the first elastic plastic ring is sleeved and fixed on an outer periphery of the key post and located in the groove, the second elastic plastic ring is fixedly disposed on a surface of the key head facing the groove and located outside the groove, the first elastic plastic ring abuts against a groove bottom of the groove to generate deformation when the key body is pressed, and the second elastic plastic ring abuts against the frame to generate deformation.

10. The electronic device of claim 9, wherein the measurement circuit is an ECG measurement circuit.