CN112672558A

CN112672558A - Positioning label and electronic equipment

Info

Publication number: CN112672558A
Application number: CN202011431597.7A
Authority: CN
Inventors: 安忠玉
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-04-16

Abstract

The embodiment of the application relates to a positioning label and electronic equipment, wherein the positioning label comprises a shell and a magnetic assembly, and the magnetic assembly is arranged in the shell. Wherein, when the location label is installed in a magnetic object, can produce magnetic force between magnetic component and magnetic object for the location label passes through magnetic force releasable earth magnetism and adsorbs in magnetic object. When the location label of this embodiment is applied to attached formula scene, through the mode of magnetism adsorption, can attach the location label on magnetic object, get and put the convenience, promoted user experience.

Description

Positioning label and electronic equipment

Technical Field

The embodiment of the application generally relates to the technical field of electronic equipment, and particularly relates to a magnetic adsorption type positioning tag and electronic equipment.

Background

Some electronic devices in the related art, such as a positioning tag, generally need to be mounted on an object to realize the functions of the electronic device. However, when the attachment type installation scene is encountered, the installation structure of the electronic device in the related art is inconvenient to install, and user experience is affected.

Disclosure of Invention

The embodiment of the application provides a location label and electronic equipment, through the mode of magnetism adsorption, conveniently installs on an object.

The positioning label comprises a shell and a magnetic assembly, wherein the magnetic assembly is arranged in the shell. When the positioning tag is arranged on a magnetic object, magnetic force can be generated between the magnetic assembly and the magnetic object, so that the positioning tag can release geomagnetic attraction to the magnetic object through the magnetic force.

In some of these embodiments, the magnetic assembly comprises a permanent magnet.

In some of these embodiments, the positioning tag further comprises a circuit board mounted within the housing;

the permanent magnet is annular and is wound on the periphery of the circuit board.

In some of these embodiments, the magnetic assembly comprises an electromagnet;

when the positioning label is arranged on the magnetic object, the electromagnet is electrified; when the positioning label is not installed on the magnetic object, the electromagnet is not electrified.

In some embodiments, the positioning tag further comprises a circuit board and a switch, the circuit board is disposed in the housing, the switch is disposed in the housing, and the circuit board is electrically connected to the electromagnet and the switch;

and when the user operates the switch, the circuit board executes the function of the positioning label, and the electromagnet is electrified.

The electronic equipment comprises an equipment body and a connecting piece, wherein the equipment body comprises a shell and a magnetic assembly arranged in the shell; the connecting piece can be arranged on a non-magnetic object;

when the equipment body is arranged on the connecting piece, magnetic force can be generated between the magnetic assembly and the connecting piece, so that the equipment body can be magnetically adsorbed on the connecting piece through the releasable magnetic force.

In some of these embodiments, the connector is sheet-like, including oppositely disposed first and second sides;

the equipment body can magnetic adsorption in first side, the second side is equipped with the glue film, the glue film can paste in non-magnetic object.

In some of these embodiments, the device body further comprises a circuit board mounted within the housing;

In some of these embodiments, the magnetic assembly comprises an electromagnet;

when the equipment body is arranged on the connecting piece, the electromagnet is electrified; when the equipment body is not installed on the connecting piece, the electromagnet is not electrified.

In some embodiments, the apparatus body further includes a circuit board and a switch, the circuit board is disposed in the housing, the switch is disposed in the housing, and the circuit board is electrically connected to the electromagnet and the switch;

the user operates the switch, the circuit board executes the function of the equipment body, and the electromagnet is electrified.

In some of these embodiments, the device body is a location tag.

One embodiment in the above application has the following advantages or benefits:

the positioning label of the embodiment of the application comprises a shell and a magnetic assembly arranged in the shell, wherein the magnetic assembly is configured to be capable of generating magnetic force with a magnetic object, so that the positioning label can release geomagnetic attraction to the magnetic object. When the location label of this embodiment is applied to attached formula scene, through the mode of magnetism adsorption, can attach the location label on magnetic object, get and put the convenience, promoted user experience.

On the other hand, compare the mode of trompil and string rope on the casing that adopts among the relevant art, the magnetic component of the location label of this application embodiment sets up in the casing, does not change and destroy the structure of casing, has ensured the integrality of location label's outward appearance.

On the other hand, another electronic equipment of this application embodiment includes equipment body and connecting piece, and the earth magnetism can be released to the equipment body and adsorbs in the connecting piece, and the connecting piece is configured to can install on a non-magnetic object, and the cooperation connecting piece is used, and the electronic equipment of this application embodiment can be applied to multiple scene, for example attaches on the object of making such as stone material, timber or glass, has satisfied user's multiple application demand.

Drawings

The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 shows an exploded view of an electronic device according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of the electronic device according to the embodiment of the present application, in which the first housing and the circuit board are removed.

Fig. 4 is another schematic structural diagram of the electronic device according to the embodiment of the present application, in which the first housing and the circuit board are removed.

Fig. 5 shows a cross-sectional view along section line a-a in fig. 1.

Fig. 6 is a functional block diagram of an electronic device according to an embodiment of the present application.

Fig. 7 is a schematic view illustrating an electronic device according to an embodiment of the present disclosure attached to a non-magnetic object.

Wherein the reference numerals are as follows:

100. a housing; 110. a first housing; 120. a second housing; 121. a groove; 130. a switch; 300. a magnetic component; 500. a circuit board; 510. unfilled corners; 10. an apparatus body; 20. a connecting member; 201. a first side; 202. a second side; 30. a non-magnetic object.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Some electronic devices in the related art generally need to be mounted on an object to realize functions of the electronic device. For example, when distance measurement is performed using an Ultra Wide Band (UWB) positioning tag (hereinafter, simply referred to as a "positioning tag"), it is necessary to attach the positioning tag to an object to measure a distance between the object and a measurement point.

The positioning tag in the related art is usually provided with a through hole, and the through hole is used for penetrating a hanging rope, so that the positioning tag is hung on an object by hanging the hanging rope on the object. However, when the positioning tag with the hanging rope is applied to an attached scene, for example, a plane object is installed, the hanging rope hangs everywhere, which causes inconvenience in installation and reduces user experience.

In addition, the positioning label in the related art is installed on the object in a rope hanging mode, and a glue layer is arranged on one side of the positioning label, one side of the glue layer is pasted on the positioning label, and the other side of the glue layer is pasted on the plane object, so that the positioning label is pasted on the plane object. However, when the positioning label needs to be removed from the planar object, the positioning label is difficult to be removed by the user due to the firm adhesion of the adhesive layer. In addition, after the positioning label is detached, a few residual glue layers are left on the positioning label and the plane object, so that the re-attaching of the positioning label is influenced, and the attractiveness of the plane object is influenced.

The installation mode that the location label among the above-mentioned correlation technique was installed on an object all has and can not accomplish to be taken along with putting, and it is not convenient enough to use, user experience scheduling problem not good.

Based on this, this application embodiment provides an electronic equipment of installing on object through magnetism adsorption mode.

It should be understood that the electronic devices of the embodiments of the present application include, but are not limited to: cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving Picture experts group (MPEG-1 or MPEG-2) Audio layer 3(MP3) players, portable medical devices, and digital cameras, and combinations thereof.

To better illustrate the magnetic attraction manner of the electronic device according to the embodiment of the present application, the electronic device is taken as an example of a positioning tag.

As shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and fig. 2 is an exploded view of the electronic device according to the embodiment of the present application. The positioning tag of the embodiment of the present application includes a housing 100, a magnetic assembly 300, and a circuit board 500. The magnetic assembly 300 is disposed in the housing 100, and the circuit board 500 is mounted in the housing 100. When the positioning tag is attached to a magnetic object, a magnetic force can be generated between the magnetic assembly 300 and the magnetic object, so that the positioning tag can release the geomagnetic attraction to the magnetic object through the magnetic force.

It should be noted that the "magnetic object" in the embodiments of the present application refers to an object that can generate magnetism when acted on by a magnetic field, for example, the magnetic object may be made of alloy, ferrite, intermetallic compound or a combination of the above.

It should be noted that the term "releasable" in the embodiments of the present application means that, when the user needs to remove the positioning tag from the magnetic object, the user only needs to apply a force greater than the magnetic force between the magnetic assembly and the magnetic object to release the positioning tag from the magnetic object.

The housing 100 includes a first housing 110 and a second housing 120, and the first housing 110 and the second housing 120 can be connected by a snap-fit connection to form a cavity. Of course, the first housing 110 and the second housing 120 may also be connected by other methods, such as screwing. The magnetic assembly 300 and the circuit board 500 are disposed within the cavity. When the circuit board 500 works, the function of positioning the tag, such as positioning and ranging, can be realized.

As shown in fig. 2 and 3, fig. 3 is a schematic structural diagram of the electronic device of the embodiment of the present application with the first housing and the circuit board removed. The magnetic assembly 300 of the present embodiment may include a permanent magnet, for example, the magnetic assembly 300 includes three block permanent magnets. Three block permanent magnets may be disposed near the periphery of the housing 100.

The circuit board 500 is provided with three unfilled corners 510, and the three unfilled corners 510 are respectively disposed corresponding to the three block-shaped permanent magnets, so that the three block-shaped permanent magnets are respectively disposed in the three unfilled corners 510. Through the arrangement of the unfilled corner 510 of the circuit board 500, although the magnetic assembly 300 is additionally arranged in the housing, the outer size of the housing is not increased.

Of course, referring to fig. 4, fig. 4 is another schematic structural diagram of the electronic device according to the embodiment of the present application, in which the first housing and the circuit board are removed. In this embodiment, the permanent magnet may have a ring shape and is wound around the outer circumference of the circuit board 500.

In this embodiment, through being the annular with the permanent magnet design, can make when the location label is attached on magnetic object, the magnetic adsorption area between permanent magnet and magnetic object is bigger, and the magnetic force that produces between permanent magnet and magnetic object is bigger, and the location label is attached more firmly, and difficult emergence accident drops.

It is to be understood that the "ring" in the above embodiments is not limited to a circular ring, and may be a regular ring, such as a rectangle, a triangle, a pentagon, a hexagon, etc., or an irregular ring, which is not listed here.

Of course, it can be understood that the number and shape of the permanent magnets in the embodiments of the present application may be modified in many ways, and the permanent magnets may generate magnetic force with the magnetic object to magnetically attach the electronic device to the magnetic object. For example, the number of permanent magnets may be one, two, four, or other; in addition to the block or ring shape described above, the permanent magnet may also be circular, triangular or rectangular in shape.

As shown in fig. 5, fig. 5 is a sectional view taken along the sectional line a-a of fig. 1. The magnetic member 300 of the embodiment of the present application may be attached to an inner wall surface of the second housing 120. The inner wall surface of the second housing 120 is provided with a groove 121, and a part or all of the magnetic assembly 300 is disposed in the groove 121.

By arranging the magnetic assembly 300 in the groove 121 of the second housing 120, the thickness of the region of the second housing 120 where the magnetic assembly 300 is arranged is reduced, and when the second housing 120 is attached to a magnetic object, the magnetic assembly 300 is closer to the magnetic object, so that the magnetic force generated between the magnetic assembly 300 and the magnetic object is stronger, and the positioning label is more firmly attached.

In one embodiment, the magnetic assembly 300 can be mounted in the groove 121 of the second housing 120 by a double-sided tape or a dispensing method.

The circuit board 500 may be mounted on the inner wall surface of the second housing 120 by a bolt assembly.

Of course, it is understood that the above-described manner in which the magnetic assembly 300 includes a permanent magnet may alternatively be implemented in which the magnetic assembly 300 includes an electromagnet. When the positioning tag is attached to the magnetic object, the electromagnet is electrified, so that magnetic force is generated between the electromagnet and the magnetic object, and the positioning tag can release the geomagnetic attraction to the magnetic object through the magnetic force. When the positioning label is not attached to the magnetic object, the electromagnet is not electrified.

It will be appreciated that the electromagnet may be energised in the following manner: a switch is arranged on the shell of the positioning label, and a user can realize the electrification or the non-electrification of the electromagnet by operating the switch. Specifically, when the positioning tag is attached to the magnetic object, the user turns on the switch, and the electromagnet is energized, so that the positioning tag is magnetically adsorbed to the magnetic object. After the positioning label is used, the user turns off the switch, the electromagnet is powered off, the magnetic force between the electromagnet and the magnetic object disappears, and the user can conveniently take down the positioning label.

Of course, it is understood that the electromagnet can be powered on or off, and the remote controller can be operated. Specifically, a user can operate the remote controller to send a power-on signal or a power-off signal to the positioning tag, the power-on signal controls the electromagnet to be powered on, and the power-off signal controls the electromagnet to be powered off.

It can be understood that the power on or off of the electromagnet of the positioning tag according to the embodiment of the present application can also be implemented in the manner shown in fig. 6, and fig. 6 shows a functional block diagram of the electronic device according to the embodiment of the present application. The positioning tag of the embodiment of the present application includes a magnetic assembly 300, a circuit board 500, and a switch 130, and the magnetic assembly 300 includes an electromagnet. The circuit board 500 is disposed in the housing, and the switch 130 is disposed on the housing 100. The switch 130 is electrically connected to the circuit board 500, and the circuit board 500 is electrically connected to the electromagnet. When the user operates the switch 130, the circuit board 500 performs the function of the electronic device, and the electromagnet is energized.

Specifically, the user can attach the positioning tag to the magnetic object, and then trigger the switch 130, the circuit board 500 performs the function of positioning the tag, and simultaneously, the electromagnet is powered on to magnetically adsorb the positioning tag to the magnetic object. The user can execute the function of positioning the label and the magnetic adsorption mode by operating the switch 130 once, thereby facilitating the operation of the user and improving the experience of the user.

Similarly, after the positioning tag is used, the user only needs to operate the switch 130 once to turn off the positioning tag and release the positioning tag from the magnetic object.

In the above embodiments, the electronic device of the present application is attached to a magnetic object. The electronic device of the present embodiment attached to a non-magnetic object is described in detail below with reference to fig. 7.

As shown in fig. 7, fig. 7 is a schematic view illustrating the electronic device of the embodiment of the present application attached to a non-magnetic object. It should be noted that the "non-magnetic object" in the embodiments of the present application refers to an object that cannot generate magnetism under the action of a magnetic field, for example, the non-magnetic object may be made of wood, glass, stone, or the like, or a combination thereof.

When the electronic device of the above embodiment is attached to a non-magnetic object, no magnetic force is generated between the magnetic component 300 and the non-magnetic object in the electronic device, so that the electronic device cannot be attached to the non-magnetic object by a magnetic adsorption method.

Based on this, the present embodiment provides another electronic device, as shown in fig. 7, the electronic device of the present embodiment includes a device body 10 and a connector 20, the device body 10 includes a housing and a magnetic assembly 300 disposed in the housing, and the connector 20 is configured to be capable of being mounted on a non-magnetic object 30. When the device body 10 is attached to the connector 20, a magnetic force can be generated between the magnetic assembly 300 and the connector 20, so that the device body 10 can be magnetically attracted to the connector 20 by the magnetic force.

In this embodiment, the device body 10 is magnetically attracted to the connecting member 20, and the connecting member 20 is mounted on the non-magnetic object 30, so that the device body 10 can be indirectly magnetically attracted to the non-magnetic object 30, and the device body 10 can be taken and placed at any time.

The connector 20 may be sheet-like and include oppositely disposed first and

second sides

201, 202. The device body 10 can be magnetically attached to the first side 201, and the second side 202 is provided with a glue layer, which can be attached to the non-magnetic object 30.

It will be appreciated that the connector 20 may be a magnetic object, for example made of an alloy, ferrite, intermetallic or a combination thereof. The connecting member 20 may be a magnetic body as a whole, or may be a part of the connecting member 20 and a part of the connecting member 30, for example, the first side 201 of the connecting member 20 is a magnetic body, and the second side 202 of the connecting member 20 is a non-magnetic body 30.

In use, the attachment 20 is mounted on the non-magnetic object 30 and the apparatus body 10 is magnetically attached to the attachment 20. After the apparatus body 10 is used, the apparatus body 10 is removed from the connecting member 20 without removing the connecting member 20. Since the connection member 20 has a plate shape and does not protrude from the surface of the non-magnetic object 30, the appearance of the non-magnetic object 30 is not affected by the arrangement of the connection member 20.

Of course, it is understood that the manner of mounting the connecting member 20 on the non-magnetic object 30 is not limited to the adhering by the glue layer, but may be the screw connection.

With reference to fig. 2 to 6, the device body 10 of the embodiment of the present application may have the same structure as the electronic device in the above embodiment, specifically:

the apparatus body 10 includes a case 100, a magnetic assembly 300, and a circuit board 500. The housing 100 includes a first housing 110 and a second housing 120, and the first housing 110 and the second housing 120 can be connected by a snap-fit connection to form a cavity. Of course, the first housing 110 and the second housing 120 may also be connected by other methods, such as screwing. The magnetic assembly 300 and the circuit board 500 are disposed within the cavity. When the circuit board 500 works, the function of positioning the tag, such as positioning and ranging, can be realized.

The magnetic assembly 300 of the present embodiment may include a permanent magnet, for example, the magnetic assembly 300 includes three block permanent magnets. Three block-shaped permanent magnets may be disposed near the periphery of the housing.

Of course, as shown in fig. 4, the permanent magnet may also be ring-shaped and wound around the periphery of the circuit board 500.

In this embodiment, through being the annular with the permanent magnet design, can make when the location label is attached on connecting piece 20, the magnetic adsorption area between permanent magnet and connecting piece 20 is bigger, and the magnetic force that produces between permanent magnet and magnetic object is bigger, and the location label is attached more firmly, and difficult emergence accident drops.

As shown in fig. 5, the magnetic member 300 according to the embodiment of the present invention may be attached to an inner wall surface of the second housing 120. The inner wall surface of the second housing 120 is provided with a groove 121, and a part or all of the magnetic assembly 300 is disposed in the groove 121.

By arranging the magnetic component 300 in the groove 121 of the second housing 120, the thickness of the region of the second housing 120 where the magnetic component 300 is arranged is reduced, and when the second housing 120 is attached to the connecting element 20, the magnetic component 300 is closer to the first side 201 of the connecting element 20, so that the magnetic force generated between the magnetic component 300 and the connecting element 20 is stronger, and the positioning label is more firmly attached.

In one embodiment, the magnetic assembly 300 can be mounted in the groove 121 by using a double-sided tape or a dispensing method.

Of course, it is understood that the above-described manner in which the magnetic assembly 300 includes a permanent magnet may alternatively be implemented in which the magnetic assembly 300 includes an electromagnet. When the positioning tag is attached to the connector 20, the electromagnet is powered on, so that magnetic force is generated between the electromagnet and the connector 20, and the positioning tag can be attracted to the connector 20 through the magnetic force to release the geomagnetic field. When the positioning tag is not attached to the connector 20, the electromagnet is not energized.

It will be appreciated that the electromagnet may be energised in the following manner: a switch is arranged on the shell of the positioning label, and a user can realize the electrification or the non-electrification of the electromagnet by operating the switch. Specifically, when the positioning tag is attached to the connector 20, the user turns on the switch, and the electromagnet is energized, thereby magnetically attracting the positioning tag to the connector 20. After the positioning label is used, the user turns off the switch, the electromagnet is powered off, the magnetic force between the electromagnet and the connecting piece 20 disappears, and the user can conveniently take the positioning label off the connecting piece 20.

It is understood that the electromagnet of the positioning tag of the embodiment of the present application can be powered on or off in the manner shown in fig. 6. The positioning tag of the embodiment of the present application includes a magnetic assembly 300, a circuit board 500, and a switch 130, and the magnetic assembly 300 includes an electromagnet. The circuit board 500 is disposed in the housing 100, and the switch 130 is disposed on the housing 100. The switch 130 is electrically connected to the circuit board 500, and the circuit board 500 is electrically connected to the electromagnet. When the user operates the switch 130, the circuit board 500 performs the function of the electronic device, and the electromagnet is energized.

Specifically, the user can first attach the positioning tag to the connector 20, and then trigger the switch 130, the circuit board 500 performs the function of positioning the tag, and simultaneously, the electromagnet is powered on to magnetically adsorb the positioning tag to the connector 20. The user can execute the function of positioning the label and the magnetic adsorption mode only by operating the switch 130 once, thereby effectively facilitating the operation of the user and improving the experience of the user.

Similarly, after the positioning tag is used, the user only needs to operate the switch 130 once to turn off the positioning tag and release the positioning tag from the connecting member 20.

To sum up, the advantage and the beneficial effect of location label and electronic equipment of this application embodiment lie in:

In the application examples, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the examples of the application can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "right", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present application.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application embodiment. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the claimed embodiments and is not intended to limit the claimed embodiments, and various modifications and changes may be made to the claimed embodiments by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the applied embodiment shall be included in the protection scope of the applied embodiment.

Claims

1. A positioning tag, comprising:

a housing; and

the magnetic assembly is arranged in the shell;

when the positioning tag is arranged on a magnetic object, magnetic force can be generated between the magnetic assembly and the magnetic object, so that the positioning tag can release geomagnetic attraction to the magnetic object through the magnetic force.

2. The location tag of claim 1, wherein the magnetic assembly comprises a permanent magnet.

3. The locating tag of claim 2, further comprising a circuit board mounted within the housing;

4. The location tag of claim 1, wherein the magnetic assembly comprises an electromagnet;

5. The positioning tag of claim 4, further comprising a circuit board and a switch, wherein the circuit board is disposed in the housing, the switch is disposed in the housing, and the circuit board is electrically connected to the electromagnet and the switch;

6. An electronic device, comprising:

the equipment body comprises a shell and a magnetic assembly arranged in the shell; and

a connector capable of being mounted to a non-magnetic object;

7. The electronic device of claim 6, wherein the connector is sheet-like and includes first and second oppositely disposed sides;

8. The electronic device of claim 6, wherein the magnetic assembly comprises a permanent magnet.

9. The electronic device of claim 8, wherein the device body further comprises a circuit board mounted within the housing;

10. The electronic device of claim 6, wherein the magnetic assembly comprises an electromagnet;

11. The electronic device according to claim 10, wherein the device body further comprises a circuit board and a switch, the circuit board is disposed in the housing, the switch is disposed in the housing, and the circuit board is electrically connected to the electromagnet and the switch;

12. The electronic device according to any one of claims 6 to 11, wherein the device body is a positioning tag.