Automatic cleaning equipment, base station and system

Abstract

The utility model provides automatic cleaning equipment, a base station and a system. The automatic cleaning equipment comprises an equipment body; the first charging elastic sheet is arranged on the equipment body, and the first charging elastic sheet is used for abutting against a second charging elastic sheet on the base station; the first limiting component is arranged on the first charging elastic sheet, and the first limiting component and a second limiting component on a second charging elastic sheet of the base station form an electromagnet structure; when the electromagnet structure is in a power-on state, the first limiting part limits the position of the second limiting part, so that when the equipment body is charged, the first charging elastic piece and the second charging elastic piece are kept attached.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic cleaning equipment, and in particular to an automatic cleaning equipment, a base station and a system. Background Art

[0002] With the development of science and technology, automatic cleaning devices have become increasingly widely used. Automatic cleaning devices, such as sweeping robots or robots with sweeping and mopping functions, will automatically return to the base station for charging after completing a cleaning task or when the battery level is low during cleaning. Both the automatic cleaning device and the base station are equipped with charging springs. When the charging springs of the automatic cleaning device and the charging springs of the base station are in contact, the automatic cleaning device can be charged. In related technologies, the charging process of the automatic cleaning device can cause the charging springs to oxidize or produce multiple dark streaks, resulting in a reduced charging rate of the automatic cleaning device. Utility Model Content

[0003] In view of the above technical problems in the related art, the present disclosure provides an automatic cleaning device, a base station and a system to protect the charging shrapnel of the automatic cleaning device and ensure the charging rate of the automatic cleaning device.

[0004] In a first aspect, the present disclosure provides an automatic cleaning device that is charged via a base station, the device comprising:

[0005] Equipment body;

[0006] a first charging elastic sheet, provided on the device body, and configured to abut against a second charging elastic sheet on the base station;

[0007] a first limiting component, disposed on the first charging elastic piece, wherein the first limiting component and the second limiting component on the second charging elastic piece of the base station form an electromagnet structure;

[0008] Wherein, when the electromagnet structure is in an energized state, the first limiting component limits the position of the second limiting component so that the first charging elastic sheet and the second charging elastic sheet remain in contact when the device body is charging.

[0009] In a second aspect, the present disclosure provides a base station for charging an automatic cleaning device, the base station comprising:

[0010] Base station body;

[0011] a second charging elastic sheet, provided on the base station body, the second charging elastic sheet being used to abut against the first charging elastic sheet on the automatic cleaning device body;

[0012] a second limiting component, disposed on the second charging elastic piece, wherein the second limiting component and the first limiting component on the self-cleaning device form an electromagnet structure;

[0013] Wherein, when the electromagnet structure is in an energized state, the second limiting component limits the position of the first limiting component so that the first charging elastic sheet and the second charging elastic sheet remain in contact when the device body is charging.

[0014] In a third aspect, the present disclosure provides an automatic cleaning system, comprising:

[0015] Automatic cleaning equipment and base stations;

[0016] The automatic cleaning device includes a device body and a first charging elastic sheet provided on the device body, wherein the first charging elastic sheet is provided with a first limiting component;

[0017] The base station includes a base station body and a second charging elastic piece provided on the base station body, the second charging elastic piece is provided with a second limiting component, and the first limiting component and the second limiting component form an electromagnet structure;

[0018] Wherein, when the electromagnet structure is in an energized state, the first limiting component limits the position of the second limiting component so that the first charging elastic sheet and the second charging elastic sheet remain in contact when the device body is charging.

[0019] One or more technical solutions provided by the embodiments of the present disclosure achieve at least the following technical effects or advantages:

[0020] The automatic cleaning device provided by the present disclosure includes a device body and a first charging spring provided on the device body, a first limiting component provided on the first charging spring, and the first limiting component and the second limiting component provided on the second charging spring of the base station form an electromagnet structure. When the electromagnet structure is in a power-on state, the first limiting component and the second limiting component are limited, so that the first charging spring and the second charging spring are fully fitted together. After the first charging spring and the second charging spring are fitted together, the device body is charged. In this solution, by limiting the first limiting component and the second limiting component, it is possible to ensure that the first charging spring and the second charging spring can be fitted together, effectively avoiding the occurrence of false connection or poor contact between the first charging spring and the second charging spring, thereby effectively preventing the charging spring from turning black, and improving the charging efficiency of the automatic cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an automatic cleaning device provided in an embodiment of this specification;

[0022] Figure 2 A schematic diagram of the structure of a base station provided in an embodiment of this specification;

[0023] Figure 3 A schematic structural diagram of a first charging spring provided in an embodiment of this specification;

[0024] Figure 4 A schematic diagram of the structure of a second charging spring provided in an embodiment of this specification;

[0025] Figure 5 This is a schematic diagram of an automatic cleaning equipment system provided in an embodiment of this specification. DETAILED DESCRIPTION

[0026] In order to better understand the above technical solutions, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0027] First of all, it should be noted that the term "and / or" appearing in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the front and back associated objects are in an "or" relationship. The terms "multiple" and "at least two" include two or more than two situations. The terms "first", "second", "third", etc. are only used as labels, and are not restrictions on the number of their objects and the order of their relationships. The terms "front", "back", "up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0028] like Figure 1 The figure is a schematic diagram of the structure of an automatic cleaning device provided in the embodiment of this specification, please refer to Figure 1 The automatic cleaning device 100 includes: a device body 110 and a first charging spring 120 provided on the device body 110 ; a first limiting component 121 is provided on the first charging spring 120 .

[0029] like Figure 2 As shown, the embodiment of this specification also provides a base station 200 for use with the automatic cleaning device 100. The base station 200 includes a base station body 210 and a second charging spring 220 arranged on the base station body 210; a second limiting component 221 is provided on the second charging spring 220.

[0030] In the embodiment of this specification, the first charging spring 120 and the second charging spring 220 are in contact with each other, and the first limiting component 121 and the second limiting component 221 set on the second charging spring 220 of the base station 200 form an electromagnet structure; wherein, when the electromagnet structure is in the energized state, the first limiting component 121 and the second limiting component 221 are limited, thereby making the first charging spring 120 and the second charging spring 220 fit together to charge the device body 110.

[0031] In the embodiments of this specification, the automatic cleaning device 100 can be a sweeping robot, a sweeping and mopping robot, etc. For the sake of convenience, the automatic cleaning device 100 is taken as an example of a sweeping robot. The device body 110 can be provided with a cleaning brush (including a main cleaning brush, side brush, etc.), an air duct, a dust box, an air outlet, etc. for performing cleaning tasks.

[0032] The device body 110 is also provided with a first charging spring 120. The position of the first charging spring 120 can be set as needed. For example, the first charging spring 120 can be located on the side wall of the automatic cleaning device 100 or at the bottom of the automatic cleaning device 100. The number of first charging springs 120 can also be set according to actual needs. For example, the number of first charging springs 120 can be 1, 2, 3, etc. For ease of understanding, two settings of the first charging spring 120 are described below.

[0033] The first

[0034] like Figure 1 As shown, the automatic cleaning device 100 also includes a first cleaning brush 131 and a second cleaning brush 132, which are respectively located at the bottom of the device body 110. The device body 110 includes two first charging springs 120, both of which are arranged on the side walls of the device body 110 and are respectively located above the first cleaning brush 131 and above the second cleaning brush 132.

[0035] It should be noted that the shape and size of the first charging elastic piece 120 can be set according to actual needs. In the embodiments of this specification, considering that some automatic cleaning devices 100 have water supply and drainage functions, the base station 200 of the automatic cleaning device 100 is located in a relatively humid area, or in some cases, there is liquid at the bottom of the automatic cleaning device 100 and / or the base station 200. In order to avoid the risk of water ingress into the first charging elastic piece 120 and / or the second charging elastic piece 220, the first charging elastic piece 120 can be set on the side wall of the device body 110.

[0036] It should be understood that the number of the second charging springs 220 on the base station body 210 is the same as the number of the first charging springs 120, the shape and size of the second charging springs 220 can be the same as the first charging springs 120, and the setting position of the second charging springs 220 corresponds to the position of the first charging springs 120. For example, when the first charging springs 120 are set on the side wall of the device body 110, the second charging springs 220 can be set on the side wall of the base station body 210, and the height of the second charging springs 220 is consistent with the height of the first charging springs 120. When the automatic cleaning device 100 returns to the base station for charging, each first charging spring 120 can be completely attached to the corresponding second charging spring 220.

[0037] The second

[0038] The device body 110 includes two first charging springs 120, both of which are disposed at the bottom of the device body 110. For example, for an automatic cleaning device 100 that does not have water supply and drainage functions, or an automatic cleaning device 100 where the base station 200 is located in a dry area, the first charging springs 120 can be disposed at the bottom of the device body 110. The location of the first charging springs 120 at the bottom of the device body 110 can be set according to actual needs and is not limited here.

[0039] When the first charging spring 120 is disposed at the bottom of the device body 110, the second charging spring 220 is also correspondingly disposed at the bottom of the base station body 210, and the position of the second charging spring 220 matches that of the first charging spring 120. The number, shape, and size of the second charging springs 220 can also be consistent with those of the first charging springs 120. When the automatic cleaning device 100 returns to the base station 200 for charging, each first charging spring 120 can be fully attached to the corresponding second charging spring 220.

[0040] To prevent oxidation or dark streaks on the charging springs due to poor contact, in the embodiment of this specification, a first limiting component 121 is provided on the first charging spring 120, and a second limiting component 221 is provided on the second charging spring 220 of the base station 200. The first limiting component 121 and the second limiting component 221 form an electromagnet structure. When the electromagnet structure is energized, the first limiting component 121 and the second limiting component 221 limit the position of the first charging spring 120 and the second charging spring 220, ensuring that the first charging spring 120 and the second charging spring 220 are fully aligned, preventing displacement of the first charging spring 120 and the second charging spring 220, and effectively preventing poor contact between the first charging spring 120 and the second charging spring 220.

[0041] In some embodiments, the electromagnet structure may include a magnetic rod and a magnetic hole for accommodating the magnetic rod. Thus, one of the first limiting component 121 and the second limiting component 221 may be the magnetic rod, and the other may be the magnetic hole for accommodating the magnetic rod. A coil is wound around the inner wall of the magnetic rod or the magnetic hole. Several structures of the first limiting component 121 and the second limiting component 221 are described below.

[0042] The first

[0043] like Figure 3 As shown, the first limiting component 121 is a magnetic hole provided on the first charging elastic piece 120. Figure 4 As shown, the second limiting component 221 is a magnetic bar disposed on the second charging spring 220. The magnetic bar can be fixedly disposed on the second charging spring 220 or retractably disposed on the second charging spring 220. When the magnetic bar is retractably disposed on the second charging spring 220, when subjected to an external force, the magnetic bar is in a contracted state, and when the external force is released, the magnetic bar returns to an extended state.

[0044] The coil can be wound around the inner wall of the magnetic hole. When the electromagnet structure is energized, the coil wound around the inner wall of the magnetic hole can be energized. When the magnetic rod is inserted into the magnetic hole, the magnetic rod is magnetized and attracted to the magnetic hole to limit its position, thereby fully fitting the first charging spring 120 and the second charging spring 220 to prevent displacement.

[0045] The second

[0046] The first limiting component 121 is a magnetic hole provided on the first charging spring 120, and the second limiting component 221 is a magnetic rod provided on the second charging spring 220. The magnetic rod can be fixedly provided on the second charging spring 220 or retractably provided on the second charging spring 220. When the magnetic rod is retractably provided on the second charging spring 220, it is in a contracted state when subjected to an external force and returns to an extended state when the external force is released.

[0047] The coil can be wound around a magnetic rod. When the electromagnet structure is energized, the coil wrapped around the magnetic rod can be energized. After the coil is energized, the magnetic rod is magnetized and attracted to the magnetic hole to limit its position, thereby fully fitting the first charging spring 120 and the second charging spring 220 to prevent displacement.

[0048] The third

[0049] The first limiting component 121 is a magnetic rod provided on the first charging spring 120, and the second limiting component 221 is a magnetic hole provided on the second charging spring 220. The magnetic rod can be fixedly provided on the first charging spring 120 or retractably provided on the first charging spring 120. When the magnetic rod is retractably provided on the first charging spring 120, when subjected to an external force, the magnetic rod is in a contracted state, and when the external force is released, the magnetic rod returns to an extended state.

[0050] The coil can be wound around the inner wall of the magnetic hole. When the electromagnet structure is energized, the coil wound around the inner wall of the magnetic hole can be energized. When the magnetic rod is inserted into the magnetic hole, the magnetic rod is magnetized and attracted to the magnetic hole to limit its position, thereby fully fitting the first charging spring 120 and the second charging spring 220 to prevent displacement.

[0051] The fourth

[0052] The first limiting component 121 is a magnetic rod provided on the first charging spring 120, and the second limiting component 221 is a magnetic hole provided on the second charging spring 220. The magnetic rod can be fixedly provided on the first charging spring 120 or retractably provided on the first charging spring 120. When the magnetic rod is retractably provided on the first charging spring 120, when subjected to an external force, the magnetic rod is in a contracted state, and when the external force is released, the magnetic rod returns to an extended state.

[0053] The coil can be wound around a magnetic rod. When the electromagnet structure is energized, the coil wrapped around the magnetic rod can be energized. After the coil is energized, the magnetic rod is magnetized and attracted to the magnetic hole to limit its position, thereby fully fitting the first charging spring 120 and the second charging spring 220 to prevent displacement.

[0054] It should be noted that for the magnetic hole and magnetic rod in the electromagnet structure, the length of the magnetic rod can be slightly smaller than the depth of the magnetic hole, and the diameter of the magnetic rod can also be slightly smaller than the diameter of the magnetic hole, so as to avoid the first charging spring 120 and the second charging spring 220 not being able to fully fit together due to the magnetic rod being too long or too thick. The difference between the magnetic hole depth and the magnetic rod length, and the difference between the magnetic hole diameter and the magnetic rod diameter can be set according to actual needs. In some embodiments, the difference between the magnetic hole depth and the magnetic rod length can be less than 1 mm, and the difference between the magnetic hole diameter and the magnetic rod diameter can be less than 1 mm.

[0055] In the embodiment of this specification, the automatic cleaning device 100 further includes a controller, which is disposed on the device body 110 and is used to control the power on and off of the electromagnet structure.

[0056] In some embodiments, if a coil is provided on the first limiting component 121, a switch device for turning the coil on and off may also be provided on the automatic cleaning device 100. The switch device is connected to the coil and the controller respectively. The controller may send a control signal to the switch device. When the automatic cleaning device 100 needs to be charged, the controller controls the switch device to close and energize the coil. When the automatic cleaning device 100 finishes charging, the controller controls the switch device to disconnect and stop energizing the coil.

[0057] In other embodiments, if a coil is provided on the second limiting component 221, then when the automatic cleaning device 100 needs to be charged, a power-on command can be sent to the base station, causing the base station 200 to charge the coil. When the automatic cleaning device 100 returns to the base station, the first limiting component 121 and the second limiting component 221 are used to limit the position, so that the first charging spring 120 and the second charging spring 220 are completely in contact. Of course, when a coil is provided on the second limiting component, a switch device for controlling the on and off of the coil can also be provided on the base station body 210.

[0058] like Figure 3 As shown, the automatic cleaning device 100 is also provided with a distance sensor 130 for detecting the target distance between the device body 110 and the base station 200. The controller is used to control the electromagnet structure to energize when the target distance is less than a preset distance. The distance sensor 130 can be provided on the first charging spring 120. Of course, the distance sensor 130 can also be provided at other locations on the device body 110, which is not limited here.

[0059] It should be understood that when the electromagnet structure is energized, it is possible that the first charging spring will absorb other iron debris, affecting the charging effect. Therefore, in the embodiments of this specification, the distance sensor 130 is used to detect the target distance between the device body 110 and the base station 200. After the device body 110 moves near the base station 200, the electromagnet structure is energized. In some embodiments, when the target distance between the robot vacuum cleaner and the base station is less than 0.5m, the electromagnet structure is energized to ensure that the energized electromagnet structure completely aligns the first charging spring 120 with the second charging cabinet spring 220.

[0060] It should be understood that the base station 200 may also include a controller, which is provided in the base station body 210, for controlling the power on and off of the electromagnet structure. A distance sensor may also be provided on the base station body 210 for detecting the target distance between the automatic cleaning device 100 and the base station 200. The base station 200 can receive the target distance sent by the automatic cleaning device, or it can obtain the target distance through its own distance sensor. After the base station 200 obtains the target distance by any means, the controller of the base station 200 compares the target distance with the preset distance. If the target distance is less than the preset distance, the electromagnet structure is controlled to be energized through the controller of the base station 200. Alternatively, when the base station 200 receives the power-on command sent by the automatic cleaning device 100, the electromagnet structure is controlled to be energized through the controller of the base station 200.

[0061] In the embodiment of this specification, after the first charging spring 120 and the second charging spring 220 are completely attached, the automatic cleaning device 100 starts to be charged, so as to avoid oxidation of the charging spring or generation of dark stripes caused by poor contact of the charging spring.

[0062] In some embodiments, when the first limiting component 121 is a magnetic hole and the second limiting component 221 is a magnetic rod, in order to determine whether the first limiting component 121 and the second limiting component 221 are already in the limiting state and make the first charging spring 120 and the second charging spring 220 fit together, the automatic cleaning device 100 may further include a target sensor, which is used to detect the length of the magnetic rod inserted into the magnetic hole.

[0063] The type of target sensor can be selected according to actual needs. For example, the target sensor can be an image acquisition sensor, an infrared sensor, a pressure sensor, etc. The target data collected by the target sensor is used to determine the length of the magnetic rod inserted into the magnetic hole. When the length of the magnetic rod inserted into the magnetic hole meets the preset conditions, it indicates that the first limiting component 121 and the second limiting component 221 have been successfully limited, and the first charging spring 120 and the second charging spring 220 are fully fitted. At this time, the automatic cleaning device 100 can be charged. The preset conditions can be set according to actual needs. For example, the preset conditions can be that the length of the magnetic rod inserted into the magnetic hole is greater than 85% or 90% of the depth of the magnetic hole.

[0064] For example, if the target sensor is an image acquisition sensor, the image acquisition sensor can capture an image of the magnetic rod inside the magnetic hole. Recognition and processing of the captured image can determine the length of the magnetic rod inserted into the magnetic hole, and further determine whether the length of the magnetic rod inserted meets the preset conditions. If the target acquisition sensor is an infrared sensor, the infrared sensor can be set at a specified depth within the magnetic hole. When the infrared sensor senses the magnetic rod, it can be determined that the length of the magnetic rod inserted into the magnetic hole meets the preset conditions. If the target acquisition sensor is a pressure sensor, if the pressure value collected by the pressure sensor is greater than the preset pressure value, it can be determined that the length of the magnetic rod inserted into the magnetic hole meets the preset conditions.

[0065] In the embodiments of this specification, the materials of the magnetic holes and the magnetic rods can be selected according to actual needs. In some embodiments, the material of the magnetic holes is nickel-plated copper, and the material of the magnetic rods is soft iron.

[0066] like Figure 5 As shown, an embodiment of this specification also provides an automatic cleaning device system, including: an automatic cleaning device 100 and a base station 200; the automatic cleaning device 100 includes a device body, and a first charging spring arranged on the device body, and the first charging spring is provided with a first limiting component; the base station 200 includes a base station body, and a second charging spring arranged on the base station body, and the second charging spring is provided with a second limiting component, and the first limiting component and the second limiting component constitute an electromagnet structure; wherein, when the electromagnet structure is in an energized state, the first limiting component limits the position of the second limiting component, so that the first charging spring and the second charging spring remain in contact when the device body is charging.

[0067] Regarding the above-mentioned automatic cleaning system, the specific functions of each part can be referred to the above description of the automatic cleaning device and the base station, and will not be elaborated here.

[0068] To sum up, in the embodiments of this specification, by adding an electromagnet structure and limiting the position based on the physical structure of the magnetic rod and the magnetic hole, the first charging spring and the second charging spring are better fitted together, avoiding electric sparks caused by poor contact, and the oxidation of the charging spring and the generation of dark stripes.

[0069] It should be noted that the above embodiments illustrate rather than limit the present disclosure, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present disclosure may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer.

[0070] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0071] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. An automatic cleaning device, charged via a base station, comprising: Equipment body; a first charging elastic sheet, provided on the device body, and configured to abut against a second charging elastic sheet on the base station; a first limiting component, disposed on the first charging elastic piece, wherein the first limiting component and the second limiting component on the second charging elastic piece of the base station form an electromagnet structure; Wherein, when the electromagnet structure is in an energized state, the first limiting component limits the position of the second limiting component so that the first charging elastic sheet and the second charging elastic sheet remain in contact when the device body is charging.

2. The device according to claim 1, wherein The device further comprises a controller, which is arranged on the device body and is used for controlling the power on and off of the electromagnet structure.

3. The apparatus of claim 1, wherein: One of the first limiting component and the second limiting component is a magnetic bar, and the other is a magnetic hole for accommodating the magnetic bar, wherein a coil is wound around the magnetic bar or the inner wall of the magnetic hole.

4. The apparatus of claim 2, wherein: The automatic cleaning device is provided with a distance sensor for detecting a target distance between the device body and the base station; the controller is used to control the electromagnet structure to be energized when the target distance is less than a preset distance.

5. The apparatus of claim 4, wherein: The distance sensor is arranged on the first charging elastic piece.

6. The apparatus of claim 1, wherein: The device body includes two first charging springs, both of which are arranged on the side wall of the device body, or both of which are arranged on the bottom of the device body.

7. The device of claim 6, wherein the automatic cleaning device further comprises: A first cleaning brush and a second cleaning brush are respectively located at the bottom of the device body; The two first charging springs on the device body are both arranged on the side wall of the device body and are respectively located above the first cleaning brush and above the second cleaning brush.

8. The apparatus of claim 3, wherein: If the first limiting component is the magnetic hole and the second limiting component is the magnetic rod, the automatic cleaning device further includes a target sensor, and the target sensor is used to detect the length of the magnetic rod inserted into the magnetic hole.

9. The apparatus of claim 3, wherein: The material of the magnetic hole is copper plated with nickel.

10. The apparatus of claim 3, wherein: The material of the magnetic bar is soft iron.

11. A base station for charging an automatic cleaning device, the base station comprising: Base station body; a second charging elastic sheet, provided on the base station body, the second charging elastic sheet being used to abut against the first charging elastic sheet on the automatic cleaning device body; a second limiting component, disposed on the second charging elastic piece, wherein the second limiting component and the first limiting component on the automatic cleaning device form an electromagnet structure; Wherein, when the electromagnet structure is in a power-on state, the second limiting component limits the position of the second limiting component so that the first charging elastic sheet and the second charging elastic sheet remain in contact when the device body is charging.

12. An automatic cleaning system, characterized in that: include: Automatic cleaning equipment and base stations; The automatic cleaning device includes a device body and a first charging elastic sheet provided on the device body, wherein the first charging elastic sheet is provided with a first limiting component; The base station includes a base station body and a second charging elastic piece provided on the base station body, the second charging elastic piece is provided with a second limiting component, and the first limiting component and the second limiting component form an electromagnet structure; Wherein, when the electromagnet structure is in an energized state, the first limiting component limits the position of the second limiting component so that the first charging elastic sheet and the second charging elastic sheet remain in contact when the device body is charging.

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