CN117179776A - Electronic equipment - Google Patents

Abstract

The application relates to an electronic device, which comprises a shell and an electrocardiogram detection module, wherein the shell comprises a metal substrate and a first insulating film connected with the metal substrate, the first insulating film covers a local appearance surface of the metal substrate, the first insulating film is provided with a first perforation and a second perforation which are spaced, the shell is connected with a function key and an electrode key, the function key is exposed from the first perforation to the first insulating film, the electrode key is exposed from the second perforation to the first insulating film, the function key and the electrode key are both insulated from the metal substrate, the electrocardiogram detection module is arranged in a space enclosed by the shell, the electrocardiogram detection module is used for collecting electrocardiogram signals through at least 2 detection electrodes, the at least 2 detection electrodes are arranged in an insulating way with the shell, and one detection electrode is arranged on the electrode key. When the electronic equipment is used for electrocardiographic detection, the electrode keys can be always used as structures which are contacted with fingers to access accurate acquisition signals, so that the accuracy of acquired electrocardiographic data is effectively ensured.

Description

Electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to electronic equipment.

Background

With the development of mobile technology, many conventional electronic products begin to add functions in mobile aspects, such as modern smart watches, smart bracelets, and other electronic devices often have ECG (electrocardiogram) detection functions.

In the related art, two keys are generally provided on a side of an electronic device, one is an electrode (hereinafter referred to as an "electrode key") of an ECG (electrocardiogram) acquisition module, and the other is a function key of a wristwatch, such as a power key, a menu key, a volume key, and the like. When the electrocardiogram detection function is used, the hand of a user contacts the electrode key to conduct the loop of the ECG detection circuit so as to carry out electrocardiogram detection.

When an electronic device is configured with electrode keys and function keys at the same time, in order to avoid that two keys are separated too far to be abrupt, which results in inconsistent overall appearance of the electronic device, the distance between the two keys is usually designed to be relatively close. In addition, in order to ensure that the overall structural strength of the electronic device is good, especially the structural strength of the connection position of the key and the electronic device needs to meet the requirement of anti-falling performance, the key and the shell of the electronic device in the related art are made of metal materials. In order to ensure the anti-electromagnetic interference and antistatic properties of the electronic equipment, the metal shell is grounded. With this arrangement, when the user's hand touches the electrode key for electrocardiographic detection, the metal case or the function key is easily touched by mistake, resulting in failure of the ECG detection circuit of the electrocardiographic detection module to accurately detect electrocardiographic data. The concrete steps are as follows: when the user uses the ECG function, if the finger touches the electrode key and the function key at the same time, the interference on the function key can be coupled to the ECG detection circuit through the human body; if the impedance between the function key and the ground acted by the metal shell is low, the situation that the ECG signal of the human body is directly transmitted to the ground through the function key without passing through the ECG detection circuit easily occurs, so that the ECG detection circuit cannot detect the electrocardio data.

Disclosure of Invention

An embodiment of the application provides an electronic device, which solves the technical problem that the electrocardio data cannot be accurately acquired easily due to the fact that a function key is touched by mistake when the overall aesthetic feeling of the appearance and the good structural strength of the electronic device are maintained.

The present application provides an electronic device including:

the shell comprises a metal substrate and a first insulating film connected with the metal substrate, wherein the first insulating film covers a local appearance surface of the shell, the first insulating film is provided with a first perforation and a second perforation which are spaced apart, the shell is connected with a functional key and an electrode key, the functional key is exposed from the first perforation to the first insulating film, the electrode key is exposed from the second perforation to the first insulating film, and the functional key and the electrode key are insulated from the metal substrate;

the electrocardiogram detection module is arranged in a space enclosed by the shell, the electrocardiogram detection module is used for collecting electrocardiogram signals through at least 2 detection electrodes, at least 2 detection electrodes are arranged in an insulating mode with the shell, and one detection electrode is arranged in the electrode key.

In one embodiment, a second insulating film is attached to the function key, and covers at least a surface of the function key exposed from the housing.

In one embodiment, the function key includes a movable portion and an operation portion connected to the movable portion, the movable portion is movably connected to the housing, the operation portion is configured to drive the movable portion to move relative to the housing under an external force, and the second insulating film covers at least one of the movable portion and the operation portion.

In one embodiment, the movable part is in plug-in fit with the shell, and when the operation part is pressed, the movable part moves relative to the shell; or the movable part is in sliding fit with the shell, and when the operating part is pushed, the movable part slides relative to the shell.

In one embodiment, the outer surface of the functional key is provided with a coating layer, a part of the coating layer is exposed out of the shell, a third insulating film is coated at the position, connected with the shell, of the functional key, and the third insulating film covers the part of the coating layer.

In one embodiment, the metal substrate is provided with a colored paint layer, and the color of the coating layer is the same as that of the colored paint layer.

In one embodiment, the metal base body is provided with a mounting hole, at least part of the function key is accommodated in the mounting hole, a gap exists between the part of the function key accommodated in the mounting hole and the wall of the mounting hole, and the gap is provided with a sleeve connected to the metal base body or the function key and used for insulating the function key and the metal base body from each other.

In one embodiment, the sleeve is made of an insulating material, or the sleeve is a metal tube, and is connected with a fourth insulating film, and the fourth insulating film covers at least one of the inner wall and the outer wall of the sleeve.

In one embodiment, the functional bond is made of the same material as the metal matrix, and/or the metal matrix is made of aluminum alloy, magnesium alloy or stainless steel.

In one embodiment, the electronic device is a wearable device, and at least 1 of the detection electrodes are attached to the skin when the electronic device is worn on one hand of the user, so that the electrocardiogram detection module can acquire electrocardiogram signals when the other hand of the user contacts the electrode keys.

In one embodiment, the wearable device is a wristwatch or a bracelet.

According to the electronic equipment, the metal substrate is adopted as the main body of the shell, so that the overall structural strength is ensured, the first insulating film on the metal substrate covers the local appearance surface of the metal substrate, the insulation arrangement area is reduced, and the cost is reduced. In addition, because the function key and the electrode key are insulated from the metal matrix, when the electronic equipment is adopted for electrocardiographic detection, whether the finger touches the function key by mistake is not required to be considered, and the electrode key can be always used as a structure which is contacted with the finger to access accurate acquisition signals, so that the accuracy of acquired electrocardiographic data is effectively ensured, and the technical problem that the electrocardiographic data cannot be accurately acquired due to the fact that the function key is touched by mistake easily when the integral aesthetic feeling of the appearance of the electronic equipment is maintained and the structural strength is good in the related art is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment;

FIG. 2 is a schematic diagram of wearing an electronic device according to an embodiment;

fig. 3 is a front view schematically showing a device body of an electronic device in an embodiment;

fig. 4 is a schematic rear view of a device body of an electronic device in an embodiment;

fig. 5 is a schematic diagram of an installation structure of a function key of an electronic device in an embodiment;

fig. 6 is a schematic view of a mounting structure of a function key of an electronic device in another embodiment;

fig. 7 is a schematic view of a mounting structure of a function key of an electronic device in still another embodiment;

fig. 8 is a schematic diagram of a mounting structure of a function key of an electronic device in still another embodiment;

fig. 9 is a schematic diagram of a mounting structure of a functional key and a metal substrate of an electronic device according to an embodiment.

Reference numerals:

100. an electronic device; 10. an apparatus main body; 10a, a display screen; 20. a strap; 11. a housing; 111. a metal matrix; 111a, mounting holes; 112. a first insulating film; 112a, a first perforation; 112b, second perforations; 12. a function key; 12a, a coating layer; 121. a movable part; 122. an operation unit; 13. an electrode key; LA, first electrode; RA, second electrode; RL, third electrode; 14. a second insulating film; 15. a third insulating film; 16. a sleeve; 17. and a fourth insulating film.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, an electronic device 100 according to an embodiment of the present application may be a wearable device, and in particular, the electronic device 100 may be a wristwatch or a bracelet. The electronic device 100 includes a device body 10, a strap 20, and a control circuit (not shown). The both ends of the strap 20 are respectively connected to opposite sides of the apparatus body 10 so that the apparatus body 10 is fixed to the wrist of the user by the strap 20.

The device body 10 may include a housing 11, and electronic components such as a circuit board and a battery provided in the housing 11, and the housing 11 is provided with a mounting cavity in which the electronic components such as the circuit board and the battery are provided. The apparatus main body 10 is provided with a display screen 10a connected to the housing 11 for displaying images or information.

As shown in fig. 1, in some embodiments, the housing 11 is substantially rectangular and shaped, and four corners of the rectangle may be rounded by a chamfering process, so as to provide the electronic device 100 with better appearance characteristics.

The housing 11 includes a metal base 111 and a first insulating film 112 connected to the metal base 111. The metal base 111 can ensure the overall structural strength of the housing 11, so that the electronic device 100 is excellent in shatter resistance.

The first insulating film 112 covers a partial outer surface of the metal base 111. The appearance surface refers to a surface of the metal substrate 111 that is exposed to be observed by a user during use of the electronic device 100. Since the first insulating film 112 covers only a partial outer appearance surface of the metal base 111, an insulating arrangement area is reduced to reduce costs.

The first insulating film 112 is provided with a first through hole 112a and a second through hole 112b which are spaced apart from each other, the case 11 is connected with the function key 12 and the electrode key 13, the function key 12 is exposed from the first through hole 112a to the first insulating film 112, and the electrode key 13 is exposed from the second through hole 112b to the first insulating film 112.

In the electronic device 100 according to the embodiment of the present application, an electrocardiogram detection module is configured, specifically, the electrocardiogram detection module is disposed in a space enclosed by the housing 11, the electrocardiogram detection module is configured to collect electrocardiogram signals through at least 2 detection electrodes, at least 2 detection electrodes are disposed in an insulating manner with the housing 11, and one of the detection electrodes is disposed on the electrode key 13.

Because the function key 12 and the electrode key 13 are insulated from the metal matrix 111, when the electronic device 100 of the application is adopted to carry out electrocardiographic detection, whether the finger touches the function key 12 by mistake is not required to be considered, and the electrode key 13 can always be used as a structure which contacts with the finger to access accurate acquisition signals, thereby effectively ensuring the accuracy of the acquired electrocardiographic data and effectively solving the technical problem that the electrocardiographic data cannot be acquired accurately due to the fact that the function key 12 is touched by mistake when the integral aesthetic feeling of the appearance of the electronic device 100 is maintained and the structural strength is good in the related art.

As shown in fig. 2, when the electronic device 100 is used for electrocardiographic examination, the electronic device 100 is worn on one hand of the user so that at least 1 detection electrode is attached to the skin, and the electrocardiographic examination module can acquire electrocardiographic signals when the other hand of the user contacts the electrode key 13.

It should be noted that the number of detection electrodes required for the electrocardiogram detection by the electrocardiogram detection module may be configured according to the need, for example, only one movable electrode and one reference electrode are required for a single-lead electrocardiogram, and only 2 detection electrodes are required for the electrocardiogram detection module. As another example, as shown in connection with fig. 3 and 4, in some embodiments, the electrocardiogram detection module is electrically connected with 3 electrodes, specifically, a first electrode LA, a second electrode RA, and a third electrode RL, and in this embodiment, the electrocardiogram detection circuit is configured to acquire electrocardiogram signals through the first electrode LA and the second electrode RA and provide a reference potential for the third electrode RL. Further, when the electrocardiogram detection module is electrically connected with 3 electrodes, the first electrode LA and the second electrode RA are disposed on the back surface of the housing 11 (i.e. the surface facing away from the display screen 10 a), and the third electrode RL is disposed on the electrode key 13, so that when the user wears the electronic device 100 with one hand, the first electrode LA and the second electrode RA contact with the skin of the user, and the other hand of the user contacts with the electrode key 13 to realize conduction with the third electrode RL, so that the electrocardiogram detection module can realize collection of electrocardiogram signals through the electrodes.

As can be seen from fig. 3 and 4, the apparatus body 10 may have a square structure or a circular structure, and the outer shape of the apparatus body 10 is not particularly limited.

In the present embodiment, insulation between two objects is understood to mean that under conventional conditions, the two objects are not conductive to each other or the resistance between the two objects is very large, and accordingly, if a certain object is made of an insulating material, it is indicated that the surface resistance of the object is very large. Taking the first insulating film 112 as an example, under the daily use condition, the surface resistance of the first insulating film 112 is greater than 500 megaohms, so that the first insulating film 112 is ensured to isolate the fingers of a user from the metal matrix 111, specifically, in the electrocardiographic detection process, even if the fingers of the user contact the electrode key 13 and press the first insulating film 112, the first insulating film 112 can perform good insulation, so that the conduction between the fingers and the metal matrix 111 is avoided, and the detection accuracy is prevented from being influenced. By providing the first insulating film 112, the user does not need to worry about touching the housing 11 when pressing the electrode key 13, and therefore, after the finger touches the electrode key 13, the finger can continue to press against the electrode key 13, so as to ensure that the finger is fully contacted with the electrode key 13, and a large contact surface is obtained. Further, since the finger has a portion in contact with the first insulating film 112, a good touch feeling can be obtained due to an increased area of contact of the finger with the apparatus main body 10, and thus, when the user performs electrocardiographic detection using the electronic apparatus 100, the user does not need to carefully touch only the electrode key 13 in order to avoid contact with the housing 11, so that the user can complete electrocardiographic detection in a smooth test state.

The insulation between the function key 12 and the housing 11 has various embodiments.

For example, in some embodiments, as shown in fig. 5, the second insulating film 14 is connected to the functional key 12, and the second insulating film 14 is wrapped around the functional key 12, so that when the electronic device 100 is used for electrocardiographic detection, if a finger contacts the electrode key 13 and the functional key 12 at the same time, the second insulating film 14 can isolate the electrical contact between the finger and the functional key 12, so that the electrode key 13 is independently used as an electrocardiographic signal access point, and inaccurate acquired data caused by current passing through the functional key 12 in the acquisition process is avoided.

The second insulating film 14 may cover only a part of the surface of the function key 12, or the second insulating film 14 may cover at least the surface of the function key 12 exposed from the housing 11. With this arrangement, the second insulating film 14 can effectively prevent the finger from making electrical contact with the function key 12 at the time of electrocardiographic detection with the electronic apparatus 100. It is understood that in embodiments of the present application, electrical contact refers to the ability of two objects to pass current to each other after contact, at which point the resistance between the two may be considered small. Taking the electrical contact between the finger and the function key 12 as an example, if the finger is in electrical contact with the function key 12, when the electrocardiographic data is collected, a path is formed between the human body and the function key 12, and for a correct signal access point (i.e. the electrode key 13), the path formed between the human body and the function key 12 can lead to inaccurate signal access point positions, so that interference to electrocardiographic data is caused, and accuracy of electrocardiographic data is affected. In particular, if the impedance between the ground that the function key 12 and the metal housing 11 serve as is low, it is easy for an electrocardiographic signal of a human body to be transmitted directly to the ground through the function key 12 without passing through the detection circuit of the electrocardiographic detection module, resulting in failure of the electrocardiographic detection module to detect electrocardiographic data.

Further, the function key 12 includes a movable portion 121 and an operation portion 122 connected to the movable portion 121, the movable portion 121 is movably connected to the housing 11, the operation portion 122 is configured to drive the movable portion 121 to move relative to the housing 11 under the action of an external force, and the second insulating film 14 covers at least one of the movable portion 121 and the operation portion 122. Wherein, when the second insulating film 14 covers the operation portion 122, the second insulating film 14 can block the finger from electrically contacting the operation portion 122, thereby achieving the insulation between the finger and the function key 12. When the second insulating film 14 covers the movable portion 121, the second insulating film 14 can block the electrical contact between the movable portion 121 and the housing 11, and at this time, even if the finger contacts the operation portion 122, the electrical contact between the movable portion 121 and the housing 11 is electrically insulated under the insulation of the second insulating film 14, and the current cannot be grounded through the housing 11, so that the electrical contact between the finger and the operation portion 122 does not interfere with the accuracy of electrocardiographic detection.

It should be noted that, the function key 12 may be pressed or pushed to implement the operation of the related functions of the electronic device 100. Specifically, in some embodiments, the movable portion 121 is in plug-fit with the housing 11, and when the operation portion 122 is pressed, the movable portion 121 moves relative to the housing 11. In some embodiments, the movable portion 121 is slidably engaged with the housing 11, and when the operation portion 122 is pushed, the movable portion 121 slides with respect to the housing 11.

Referring to fig. 6, the functional key 12 has a coating layer 12a on the outer surface, and a part of the coating layer 12a is exposed from the housing 11. In this embodiment, the coating layer 12a may be configured with a color, so that the function key 12 presents a corresponding color, thereby enhancing the aesthetic appearance. Of course, the coating layer 12a may be an optical coating to enhance the surface gloss of the function key 12.

Further, the position of the functional key 12 connected with the housing 11 is covered with the third insulating film 15, and the third insulating film 15 covers part of the structure of the coating layer 12a, so that the third insulating film 15 can enhance the adhesion force between the coating layer 12a and the functional key 12, and reduce the falling probability of the coating layer 12a, so that the functional key 12 is not easy to decolor.

In some embodiments, the metal base 111 is provided with a colored paint layer (not shown), which may be located on a side of the first insulating layer facing away from the metal base 111, or may be located on a side of the first insulating layer facing toward the metal base 111. The color of the coating layer 12a is the same as that of the color paint layer, so that the overall color of the shell 11 and the functional key 12 is coordinated, and the overall appearance aesthetic feeling of the electronic equipment 100 is improved. It should be noted that, in some embodiments, the color paint layer may be configured with a color different from that of the coating layer 12a, so that the appearance of the electronic device 100 is rich in color, and the preference of the user is satisfied.

The metal base 111 is provided with a mounting hole 111a, and at least a part of the structure of the function key 12 is accommodated in the mounting hole 111a, thereby connecting the function key 12 and the housing 11. For example, in the embodiment in which the movable portion 121 is movably connected to the housing 11, the mounting hole 111a provides a mounting space for the movable portion 121 to mount the function key 12 to the housing 11, and the mounting hole 111a provides a movable space for the movable portion 121, specifically, the movable portion 121 moves at the mounting hole 111a when the function key 12 is operated by the operation portion 122.

In some embodiments, instead of the movable portion 121 being engaged with the mounting hole 111a, the function key 12 may be located in the mounting hole 111a in its entire structure or may be located in the mounting hole 111a in its partial structure, so long as the corresponding function is satisfied. For example, in some embodiments, the function key 12 is used to implement a fingerprint recognition function, and when the function key 12 is disposed at the mounting hole 111a, the appearance surface of the function key 12 may be flush with or concave with the surface of the housing 11, so as to obtain a good touch feeling and maintain the overall appearance texture of the electronic device 100.

As shown in fig. 7, in the embodiment in which at least part of the structure of the function key 12 is accommodated in the mounting hole 111a, a gap is provided between the portion of the function key 12 accommodated in the mounting hole 111a and the wall of the mounting hole 111a, and a sleeve 16 is provided in the gap, and the sleeve 16 is connected to the metal base 111 or the function key 12 and serves to insulate the function key 12 and the metal base 111 from each other. With this structural arrangement, the sleeve 16 can conveniently achieve insulation between the function key 12 and the metal base 111. Specifically, even if the portion where the function key 12 is connected to the housing 11 is a thin rod, the difficulty of providing the insulating film by plating is relatively high. With the sleeve 16 of the embodiment, the connection between the case 11 and the function key 12 can be easily removed, so that insulation between the function key 12 and the metal base 111 can be achieved by using a pipe when the sleeve 16 is provided between the portion of the mounting hole 111a and the wall of the mounting hole 111 a.

In some embodiments, as shown in connection with fig. 8 and 9, the sleeve 16 is a metal pipe, the sleeve 16 is connected with a fourth insulating film 17, and the fourth insulating film 17 covers at least one of the inner wall and the outer wall of the sleeve 16. In this embodiment, when the sleeve 16 is a metal pipe, the structural strength is high and the sleeve is not easily damaged. Further, it is also convenient to perform plating thereon to form the fourth insulating film 17.

As shown in fig. 8, the sleeve 16 may be connected to the housing 11, and in particular, the sleeve 16 is connected to a wall of the mounting hole 111 a. The specific connection manner between the two may be a buckle, a thread or a welding, which is not limited herein. As shown in fig. 9, the sleeve 16 may also be connected to the function key 12, and the specific connection manner between the two may be a snap, a thread or a weld, which is not limited herein.

In some embodiments, sleeve 16 is made of an insulating material such that sleeve 16 provides an insulating effect between function keys 12 and housing 11.

In some embodiments, the function keys 12 are made of the same material as the metal base 111, so that the appearance of the function keys 12 and the metal base 111 have uniform metallic luster, so as to maintain the overall aesthetic appearance of the electronic device 100.

The metal base 111 is made of aluminum alloy, magnesium alloy or stainless steel. The metal base 111 may be an aluminum alloy, or a magnesium alloy, or stainless steel, etc., so that the housing 11 has a relatively high structural strength and may be thin and lightweight.

It should be noted that, in the embodiment of the present application, the implementation process of the insulating film includes, but is not limited to, CVD (Chemical Vapor Deposition ) and PVD (Physical Vapor Deposition, physical vapor deposition) processes, where chemical vapor deposition refers to a method of synthesizing a coating or a nanomaterial by reacting chemical gas or steam on the surface of a substrate; physical vapor deposition refers to a technique of gasifying a material source (solid or liquid) surface into gaseous atoms or molecules or partially ionizing the material source into ions by a physical method under vacuum conditions, and depositing a thin film having a specific function on a substrate surface through a low-pressure gas (or plasma) process. Specifically, taking the first insulating film 112 as an example, in some embodiments, the first insulating film 112 is a CVD coating, and the specific coating material may be parylene. In some embodiments, the first insulating film 112 is a PVD plating, and in particular, the PVD plating may be a CrSiCN ceramic film or a WC/DLC nano multi-layer film, wherein the WC/DLC nano multi-layer film is prepared by doping W into an amorphous DLC (Diamond-like carbon) film in the form of nanocrystalline WC, and thus the thickness of the first insulating film 112 is greater than 1.5um and the resistance is greater than 500mΩ.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. An electronic device, comprising:

the shell comprises a metal matrix and a first insulating film connected with the metal matrix, wherein the first insulating film covers a local appearance surface of the metal matrix, the first insulating film is provided with a first perforation and a second perforation which are spaced apart, the shell is connected with a functional key and an electrode key, the functional key is exposed from the first perforation to the first insulating film, the electrode key is exposed from the second perforation to the first insulating film, and the functional key and the electrode key are insulated from the metal matrix;

the electrocardiogram detection module is arranged in a space enclosed by the shell, the electrocardiogram detection module is used for collecting electrocardiogram signals through at least 2 detection electrodes, at least 2 detection electrodes are arranged in an insulating mode with the shell, and one detection electrode is arranged in the electrode key.

2. The electronic device according to claim 1, wherein a second insulating film is connected to the function key, and the second insulating film covers at least a surface of the function key exposed from the housing.

3. The electronic device according to claim 2, wherein the function key includes a movable portion movably connected to the housing, and an operation portion connected to the movable portion, the operation portion being configured to move the movable portion relative to the housing by an external force, the second insulating film covering at least one of the movable portion and the operation portion.

4. The electronic device according to claim 3, wherein the movable portion is in plug-fit with the housing, the movable portion being movable relative to the housing when the operation portion is pressed; or the movable part is in sliding fit with the shell, and when the operating part is pushed, the movable part slides relative to the shell.

5. The electronic device according to claim 1, wherein a coating layer is provided on an outer surface of the function key, a part of the coating layer is exposed out of the housing, and a third insulating film is coated on a position of the function key connected to the housing, and covers a part of the coating layer.

6. The electronic device according to claim 5, wherein the metal base is provided with a colored paint layer, and the color of the coating layer is the same as the color of the colored paint layer.

7. The electronic device according to claim 1, wherein the metal base body is provided with a mounting hole, at least part of the function key is accommodated in the mounting hole, and a gap exists between a portion of the function key accommodated in the mounting hole and a wall of the mounting hole, the gap is provided with a sleeve, and the sleeve is connected to the metal base body or the function key and is used for insulating the function key and the metal base body from each other.

8. The electronic device according to claim 7, wherein the sleeve is made of an insulating material, or wherein the sleeve is a metal pipe, and wherein the sleeve is connected with a fourth insulating film, and wherein the fourth insulating film covers at least one of an inner wall and an outer wall of the sleeve.

9. The electronic device according to claim 1, wherein the functional bond is made of the same material as the metal base, and/or the metal base is made of an aluminum alloy, a magnesium alloy, or stainless steel.

10. The electronic device of claim 1, wherein the electronic device is a wearable device, at least 1 of the detection electrodes being in contact with skin when the electronic device is worn on one hand of a user, such that the electrocardiogram detection module is capable of acquiring electrocardiogram signals when the other hand of the user contacts the electrode key.

11. The electronic device of claim 10, wherein the wearable device is a watch or a bracelet.