Adapter device and accessory or kit for switching charging between two electronic devices

Abstract

The utility model discloses an adapter device and an accessory or a suite for switching charging between two electronic devices, which are used for electrically connecting a first electronic device and a second electronic device and comprise a first power connection terminal electrically connected with the first electronic device and a second power connection terminal electrically connected with the second electronic device. The control assembly is electrically connected with the first power connection terminal and the second power connection terminal respectively; the control assembly is provided with a power supply conversion module, and the power supply conversion module converts the power supply output by the first electronic equipment into the power supply required by the second electronic equipment for charging the second electronic equipment. In conclusion, the USB socket with the OTG function of the mobile phone can be used for charging a wireless low-voltage product, a special charging head part is omitted, the development, purchase and use costs are directly saved, and the charging convenience and universality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of portable charging adapters for two electronic devices, in particular to an adapter device, accessories or kits for charging transfer between two electronic devices. Background Art

[0002] In the existing TWS earphone charging technology, the charging of the earphones must rely on the charging case. Earphones on the market are connected to the charging case base with two copper pins to achieve charging. Each of the left and right earphones has a built-in battery (usually 20 - 60 mAh). The earphone body is designed with charging contacts. When the earphone is placed in the charging case, the contacts and the charging pins come into contact to achieve charging. For the charging case, in addition to the charging contacts, there is also a charging input port for the earphone box, a charging control chip and a built-in battery (usually 200 - 700 mAh). The charging case needs to cooperate with an integrated circuit to control charging management, charging information feedback and LED display.

[0003] In the existing technical solutions, the left and right earphones need to be charged through the battery case, and the battery case in turn needs to be externally charged for the battery inside the case. During charging, chips and processors are required to manage and feedback the voltage, charging progress and results. The bundling use of earphones and the charging case is serious. The charging case needs to be separately matched and carried, and the risk of loss is relatively high. In the case of the lack of a corresponding matching charging case, charging cannot be carried out. At the same time, considering the appearance and aesthetics of the charging case, a relatively large cost has been invested in the structure and appearance design of the charging case. The entire design solution directly increases the hardware cost of the product. It increases the cost threshold for the wider popularization of TWS earphones.

[0004] In life, there are also many low-voltage small devices that require special charging heads, charging cables and other devices for charging, such as styluses, portable lighting lamps, controllers, small speakers, small household appliances such as fans, etc. There is also a need to provide a universal charging adapter to improve the charging convenience of such low-voltage small devices.

[0005] Therefore, how to provide an adapter device for charging transfer between two electronic devices, which can transfer the power of the first electronic device to charge the second electronic device, and is convenient, small and has good portability, is a technical problem to be solved. Summary of the Utility Model

[0006] The utility model aims to provide a technical solution to overcome the above deficiencies.

[0007] The utility model provides an adapter device for transferring and charging between two electronic devices, which is used for electrically connecting a first electronic device and a second electronic device. The adapter device includes a first power connection terminal electrically connected to the first electronic device, a second power connection terminal electrically connected to the second electronic device, and a control component electrically connecting the first power connection terminal and the second power connection terminal respectively. The control component is provided with a power conversion module, and the power conversion module converts the power output by the first electronic device into the power required by the second electronic device for charging the second electronic device.

[0008] As a further scheme of the utility model: the first power connection terminal is set as a power connection plug that can be inserted into the power connection female socket of the first electronic device, and the second power connection terminal is set as a charging component that can be electrically connected to the charging contact of the second electronic device.

[0009] As a further scheme of the utility model: the charging component is provided with a charging pin, and a power supply contact is arranged on the charging pin. The second electronic device is provided with a pin receiving opening, and a charging contact is arranged in the pin receiving opening. The charging pin and the pin receiving opening cooperate with each other so that when the charging pin is inserted into the inside of the pin receiving opening, the power supply contact and the charging contact are in contact with each other, thereby forming an electrical connection.

[0010] As a further scheme of the utility model: the charging component is provided with a sleeve, and a power supply contact is arranged on the sleeve. The second electronic device is provided with a pin, and a charging contact is arranged inside the pin. The sleeve and the pin cooperate with each other so that the sleeve is sleeved on the outer wall of the pin, and the power supply contact and the charging contact are in contact with each other, thereby forming an electrical connection.

[0011] As a further scheme of the utility model: the charging component is provided with a clamping part, and a power supply contact is arranged on the clamping part. A charging contact is arranged on the outer shell of the second electronic device. The clamping part can be clamped on the outer shell of the second electronic device, and the power supply contact and the charging contact are in contact with each other, thereby forming an electrical connection.

[0012] As a further scheme of the utility model: the charging component is provided with an elastic part, and a power supply contact is arranged on the elastic part. A charging contact is arranged on the outer shell of the second electronic device. The elastic part can be elastically abutted against the outer shell of the second electronic device, and the power supply contact and the charging contact are in contact with each other, thereby forming an electrical connection.

[0013] As a further scheme of the utility model: it further includes a storage seat, the storage seat is fixedly connected to the adapter device, and the second electronic device is detachably and fixedly connected to the storage seat, so that the second electronic device is stored in the adapter device.

[0014] The present utility model further provides an accessory for an electronic device. The accessory can be fixedly connected to a first electronic device and includes the above-mentioned adaptation device. The adaptation device is fixedly connected to the accessory and is used to access the power supply of the first electronic device so as to charge a second electronic device.

[0015] The present utility model further provides a kit for an electronic device, which includes the above-mentioned adaptation device, a first electronic device and a second electronic device. The adaptation device is electrically connected to the first electronic device and the second electronic device respectively, and transmits the power supply of the first electronic device to the second electronic device for charging.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By providing the adaptation device, the first power connection terminal on the adaptation device can be directly electrically connected to the first electronic device, and the second power connection terminal can be directly electrically connected to the second electronic device. Then, through the power conversion module, corresponding conversion operations are performed on the power supply output by the first electronic device, so as to directly charge the second electronic device. The process of using a charging bin or a charging head is simplified, so that there is no need to carry a charging bin or a charging head additionally, making life and travel more convenient.

[0018] 2. A power connection plug can also be provided on the adaptation device, so that it can be inserted into the power connection female socket of the first electronic device with OTG function to obtain electric energy. At the same time, by providing a charging component, the electric energy is transmitted to the second electronic device for use, further optimizing the charging experience of the second electronic device.

[0019] 3. Through the design of the storage seat, the second electronic device can be directly fixed to the adaptation device, avoiding separate carrying; the adaptation device is small in size and can be integrated with a mobile phone case and a charging interface. Compared with the traditional charging bin, the carrying convenience is significantly improved. There is no need to carry a charging bin additionally, and the direct connection of "first device - adaptation device - second device" can be realized only through the adaptation device, simplifying the travel equipment.

[0020] Therefore, through the above improvements, the present utility model can provide an adaptation device for transferring and charging between two electronic devices. By using the USB socket with OTG function of a mobile phone, a wireless low-voltage product can be charged, saving the dedicated charging head part, directly saving the development, purchase and use costs, and effectively improving the charging convenience and versatility.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic block diagram of the adaptation device of the present invention connected to the first electronic device and the second electronic device;

[0024] Figure 2 It is a schematic block diagram of the earphone of the present invention connected to the mobile phone through the adaptation device;

[0025] Figure 3 It is a schematic structural diagram of the pin-type earphone of the present invention connected to the adaptation device;

[0026] Figure 4 It is a schematic structural diagram of the sleeve-type earphone of the present invention connected to the adaptation device;

[0027] Figure 5 It is a schematic structural diagram of the clamp-type earphone of the present invention connected to the adaptation device;

[0028] Figure 6 It is a schematic structural diagram of the direct connection type, contact type, elastic sheet type and coil type earphones of the present invention connected to the adaptation device.

[0029] The reference numerals and names in the figure are as follows:

[0030] 10 Adaptation device; 11 Battery; 20 First power connection terminal; 21 Wireless power connection coil; 22 Power connection plug; 30 Second power connection terminal; 31 Wireless power supply coil; 32 Charging component; 33 Power supply contact; 34 Charging pin; 35 Sleeve; 36 Clamping part; 37 Elastic part; 40 First electronic device; 41 Power connection female socket; 42 Mobile phone; 50 Second electronic device; 51 Charging contact; 52 Needle receiving opening; 53 Insertion needle; 54 Wireless charging coil; 55 Earphone. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] Please refer to Figures 1 to 6, in the embodiment of the present utility model, an adapter device for transferring and charging between two electronic devices, which is used to electrically connect a first electronic device 40 and a second electronic device 50, includes a first power connection terminal 20 electrically connected to the first electronic device 40, a second power connection terminal 30 electrically connected to the second electronic device 50, and a control component electrically connecting the first power connection terminal 20 and the second power connection terminal 30 respectively; the control component is provided with a power conversion module, and the power conversion module converts the power output by the first electronic device 40 into the power required by the second electronic device 50 for charging the second electronic device 50.

[0033] Secondly, the first power connection terminal 20 is provided with a wireless power receiving coil 21, the wireless power receiving coil 21 can receive electric energy from the first electronic device 40, the second power connection terminal 30 is provided with a wireless power supply coil 31, and the wireless power supply coil 31 can supply electric energy to the second electronic device 50.

[0034] Thirdly, the first power connection terminal 20 is set as a power connection plug 22 that can be inserted into the power connection female socket 41 of the first electronic device 40, and the second power connection terminal 30 is set as a charging component 32 that can be electrically connected to the charging contact 51 of the second electronic device 50.

[0035] As Figure 1 shown, preferably, one end of the adapter device 10 is provided with a first power connection terminal 20 for connecting to the charging interface or charging cable of the first electronic device 40, and the other end is also provided with a charging component 32 for forming an electrical connection with the charging contact 51 of the second electronic device 50. By using the OTG function of the USB of the first electronic device 40 itself and with the help of the adapter device 10, the second electronic device 50 can be directly charged, realizing the universality and convenience of charging.

[0036] The second electronic device 50 mentioned in the present utility model refers to a product suitable for working under a voltage of 0 - 5V, including electronic products that reach within 12V through a buck-boost circuit design.

[0037] The present utility model describes the technical solution of the present utility model by taking the wireless TWS earphone 55 as an example. This example is only exemplary and does not limit the technical solution of the present utility model. Those skilled in the art can apply the adapter device 10 to different wireless low-voltage products according to needs.

[0038] The technical solution of the present utility model will be described below by taking the TWS earphone 55 as an example.

[0039] Currently, mainstream mobile phone 42 products are all standardly equipped with the OTG function of Type-C or Mini USB interfaces, such as Huawei, Honor, Xiaomi, OPPO, Vivo, etc.; the standard output of OTG is 5V and 500mA, which is sufficient to charge the TWS earphone 55 (the built-in battery 11 of the earphone 55 is usually 20 - 60mA). The output of OTG can also be converted with the help of an OTG cable adapter to connect to a standard USB connector.

[0040] Figure 2 A and Figure 2 B show a schematic block diagram of the connection of the TWS earphone 55 to the mobile phone 42 with the aid of the adapter device 10. According to the different appearances and structures of the TWS earphone 55, adapter devices 10 with different structures can be adopted. Figure 2 A and Figure 2 B respectively show the adapter device 10 for wired connection and the adapter device 10 in the form of a wireless charging coil 54. As Figure 2 A and Figure 2 shown in B, preferably, one end of the TWS earphone 55 is connected to the charging component 32 of the adapter device 10 through the charging contact 51. The first power connection terminal 20 of the adapter device 10 can be a standard interface, such as the power connection plug 22 of a standard USB interface or the power connection plug 22 of a Type-C interface. This first power connection terminal 20 can be directly inserted into the power connection socket 41 of the mobile phone 42 for power transmission operation. Or connect an OTG cable and connect the OTG cable to the adapter device 10. By adopting the adapter device 10 proposed by the present utility model, the problems of high overall cost of the TWS earphone 55, single charging method, excessive reliance on the charging case and easy loss of the charging case are solved, and at the same time, the portability and versatility of the product are improved.

[0041] The structures of the adapter device 10 applicable to earphones 55 with different structures will be described in detail below.

[0042] For the pin - inserted charging type earphone 55, the adapter device 10 can adopt a corresponding pin - inserted charging component 32. Figure 3 A, 3B and 3C show the connection of the pin - inserted charging earphone 55 to the adapter device 10. As Figure 3 shown in A, the pin - inserted charging earphone 55 is connected to the mobile phone 42 with the aid of the adapter device 10 to realize the charging of the pin - inserted charging earphone 55. The charging component 32 of the adapter device 10 is provided with charging pins 34, which can be made of non - metallic non - conductive materials, and corresponding power supply contacts 33 are also provided on the charging pins 34. Among them, the power supply contacts 33 are preferably made of metal shell conductive materials so that they can form the positive and negative conductors of the power supply. As Figure 3 shown in B, a pin receiving opening 52 is provided at the bottom of the pin - inserted charging earphone 55, and a charging contact 51 is provided in the pin receiving opening 52. Figure 3As shown in Figure C, when charging, after the charging pin 34 is inserted into the pin receiving opening 52 of the earphone 55, the corresponding power supply contact 33 contacts the charging contact 51 to form an electrical connection. In addition, when the pin-type charging earphone 55 is placed inside or on the surface of the adapter device 10, the earphone 55 can be fixed inside or on the surface of the adapter device 10 by means of screw connection and / or snap fit and charged. When charging is completed, the mobile phone 42 can judge the voltage and current through the USB port with OTG function. When the current is lower than a certain value, the charging can be disconnected.

[0043] Secondly, as Figure 3 shown in Figure A, when using a cable with a certain length to connect the earphone 55, the earphone 55 can be charged, and at the same time, the earphone 55 can start to be used normally. Wireless audio communication during charging can be realized. That is, while charging, make a voice call, listen to music while charging, etc., to realize the "wired earphone 55" mode, which is convenient for users to use when the battery is low.

[0044] In another embodiment, the design of the pin-type charging member 32 can also be derived into a sleeve 35 type design, as Figure 4 shown in Figures A, Figure 4 B and Figure 4 C. That is, the earphone 55 is provided with a pin 53 while the adapter device 10 is provided with a sleeve 35. The inner wall of the sleeve 35 is provided with a power supply contact 33, and the outer wall of the pin 53 is provided with a charging contact 51. After the sleeve 35 is sleeved on the pin 53, the corresponding power supply contact 33 and the charging contact 51 can abut against each other to realize contact charging.

[0045] In another embodiment, for the clamp-type charging earphone 55, the adapter device 10 can adopt a clamp-type charging member 32. Figure 5 Figures 5A, 5B and 5C show the connection between the clamp-type charging earphone 55 and the adapter device 10. As Figure 5 shown in Figure A, the clamp-type charging earphone 55 is connected to the mobile phone 42 by means of the adapter device 10 to realize charging of the clamp-type charging earphone 55. As Figure 5 shown in Figure B, the charging member 32 of the clamp-type charging earphone 55 is provided with a clamping portion 36, and the clamping portion 36 is provided with the positive and negative poles of the power supply for contacting the charging contact 51 of the TWS earphone 55. Optionally, the clamping portion 36 can be provided with a buckle or an elastic portion 37, and the earphone 55 is fixed by means of the clamping action of the buckle or the elastic force of the elastic portion 37. The clamp-type charging member 32 can be used after being modified on the basis of the existing charging bin, which can save investment and reduce costs. As Figure 5 shown in Figure C, when charging, the earphone 55 is inserted into the clamping portion 36 of the charging member 32 to contact the charging contact 51 of the earphone 55 to form an electrical connection.

[0046] In addition, similarly, when the clamp-type charging earphone 55 is placed inside or on the surface of the adapter device 10, the earphone 55 can also be fixed inside or on the surface of the adapter device 10 by screw connection and / or snap fit and charged. When the charging is completed, the mobile phone 42 can judge the voltage and current through the USB port with OTG function. When the current is lower than a certain value, the charging can be disconnected.

[0047] Secondly, as Figure 5 shown in A, when using a cable with a certain length to connect the earphone 55, the earphone 55 can be charged, and at the same time, the earphone 55 can start to be used normally. Wireless audio communication during charging can be achieved. That is, making a voice call while charging, listening to music while charging, etc., to achieve the "wired earphone 55" mode, which is convenient for users to use when the battery is low.

[0048] In another embodiment, for the contact charging earphone 55, the adapter device 10 can be set separately, or can be set in an integrated structure with the battery 11 cover or the protective case for corresponding compatible charging. The contact charging earphone 55 can be directly fixed on the battery 11 cover or the protective case by means of a card slot or a groove, etc. The charging circuit can be set on the battery 11 cover or inside the protective case and connected to the USB or Type-C interface of the mobile phone 42 through a USB or Type-C pluggable interface.

[0049] In another embodiment, Figure 6 Figures 6A, 6B, 6C and 6D show the connection of the contact charging earphone 55 and the adapter device 10. As Figure 6 shown in A, the direct-connected charging earphone 55 is connected to the mobile phone 42 by means of the adapter device 10 in the form of a protective case. The adapter device 10 can be electrically connected to the earphone 55 by means of a charging circuit or conductive contacts, and the other end is inserted into the USB female socket 41 with OTG function of the mobile phone 42 in the form of a power plug 22. Moreover, the connection relationship between the earphone 55 and the protective case can adopt the exposed style of the earphone 55, just like the style of a rabbit ear, which can not only store the earphone 55 but also has a certain aesthetic feeling.

[0050] In another embodiment, as Figure 6 shown in B, preferably, the contact earphone 55 is provided with charging contacts 51, and the charging component 32 of the adapter device 10 is provided with power supply contacts 33. The adapter device 10 can also be provided with a battery 11, and the battery 11 can be used to charge the mobile phone 42 or the earphone 55.

[0051] And in another embodiment, as Figure 6As shown in Fig. C, preferably, the earphone 55 with elastic sheet is fixed in the battery 11 cover or the protective case by means of an elastic sheet, a buckle or magnetic attraction, that is, the adapter device 10 can be built into the battery 11 cover or the protective case to form an inlaid type of the earphone 55, and then the charging is realized by the contact between the charging contact 51 of the earphone 55 and the power supply contact 33 of the charging component 32. Similarly, the adapter device 10 can also insert the power connection plug 22 of the charging line into the power connection socket 41 of the mobile phone 42. Specifically, the second electronic device 50 can be accommodated in the adapter device 10 in a detachable or separable form by means of a threaded connection, a snap connection, an elastic connection or a magnetic attraction connection.

[0052] In another embodiment, as Figure 6 shown in Fig. D, preferably, in the future, with the improvement of device capabilities, a wireless charging coil 54 can be added to the earphone 55 to realize wireless charging. With the same design concept, the built-in wireless power supply coil 31 of the adapter device 10 can be used to wirelessly charge the coil-type earphone 55. As an example, Figure 6 Fig. D schematically shows that the mobile phone 42 powers the wireless power supply coil 31 built into the battery 11 cover or the mobile phone 42 case through OTG to form a wireless charging type. As Figure 6 shown in Fig. D, the adapter device 10 can also charge the wireless charging coil 54 of the earphone 55 through the wireless power supply coil 31 built into the battery 11 cover or the mobile phone 42 case, so as to complete the charging of the earphone 55.

[0053] In Figure 6 the examples shown in Figs. A - 6D, the adapter device 10 and the battery 11 cover or the protective case are integrally arranged, which provides convenience for users and is convenient to carry.

[0054] In addition, the TWS earphone 55 can also adopt magnetic attraction charging. The charging component 32 of the adapter device 10 can be provided with a magnetic attraction device, which interacts with the magnetic attraction device of the earphone 55 to realize fixation and charging.

[0055] For the charging method in which the adapter device 10 is integrated with the mobile phone 42 protective case, all the above charging methods can also be adopted, such as pin insertion charging, so as to reduce the thickness of the mobile phone 42 case. The adapter device 10 can be designed in the form of rabbit ears and other themes to increase the aesthetics and interest.

[0056] It can also be designed to export the charging line output by USB OTG through other methods and at other positions to realize convenient design and charging.

[0057] The above examples are only exemplary. Those skilled in the art can make combinations according to needs, and can also adopt corresponding types of adapter devices 10 with the emergence of new earphones 55, all of which are included in the design concept of the present invention.

[0058] The above embodiments use the OTG (USB function and charging technology) function of the Type-C or Mini USB interface of the mobile phone 42 to directly charge the TWS earphone 55, eliminating the charging compartment, and using the adapter 10 or the protective case of the mobile phone 42 provided with the adapter 10 to charge the earphone 55. Cost, convenience, portability and / or fun are taken into account. The charging cable and the mobile phone 42 are reused, and the earphone 55 and the adapter 10 are easy to carry.

[0059] The above description uses the mobile phone 42 as an example of a charging power source, and the charging power source may also come from electronic products such as a smart phone 42, a power bank, a desktop computer, a laptop computer, a tablet computer, a VR device, etc.

[0060] The above uses headphones 55 as an example of a low-voltage electronic product. The technical solution of the utility model can also be used for charging other low-voltage electronic products, such as wearable products and stylus pens. Wearable products include bracelets, watches, smart jewelry, etc. It can also be used for stylus pens for mobile phones 42 and tablets, portable and small speakers, wireless remote controls, mice, etc. It can also be used for other small electrical appliances, such as emergency lights, voice recorders, fans, etc.

[0061] The adapter device 10 proposed in the utility model can be combined with the earphone 55 to form a kit, or can be combined with an electronic product with OTG output to form a kit, or can be combined with a protective shell of an electronic product to form an accessory, thereby reducing the charging cost and facilitating the charging of electronic products. Those skilled in the art can combine the adapter device 10 with different kits as needed.

[0062] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

[0063] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An adapter device for transferring charging between two electronic devices, used for electrically connecting a first electronic device (40) and a second electronic device (50), characterized in that: The device comprises a first power terminal (20) electrically connected to a first electronic device (40), a second power terminal (30) electrically connected to a second electronic device (50), and a control component electrically connected to the first power terminal (20) and the second power terminal (30) respectively; the control component is provided with a power conversion module, the power conversion module converts the power output by the first electronic device (40) into the power required by the second electronic device (50) for charging the second electronic device (50); The first power connection terminal (20) is configured as a power connection plug (22) that can be inserted into a power connection socket (41) of a first electronic device (40), and the second power connection terminal (30) is configured as a charging member (32) that can be electrically connected to a charging contact (51) of a second electronic device (50); It also comprises a storage seat, which is fixedly connected to the adapting device (10), and the second electronic device (50) is detachably fixedly connected to the storage seat, so that the second electronic device (50) can be stored in the adapting device (10).

2. The adapter device for transferring charging between two electronic devices according to claim 1, characterized in that: The charging component (32) is provided with a charging needle (34), and the charging needle (34) is provided with a power supply contact (33). The second electronic device (50) is provided with a needle receiving opening (52), and the charging contact (51) is provided in the needle receiving opening (52). The charging needle (34) and the needle receiving opening (52) cooperate with each other, so that when the charging needle (34) is inserted into the needle receiving opening (52), the power supply contact (33) and the charging contact (51) abut against each other, thereby forming an electrical connection.

3. The adapter device for transferring charging between two electronic devices according to claim 1, characterized in that: The charging component (32) is provided with a sleeve (35), and a power supply contact (33) is provided on the sleeve (35); the second electronic device (50) is provided with a plug pin (53), and a charging contact (51) is provided inside the plug pin (53); the sleeve (35) and the plug pin (53) cooperate with each other, so that the sleeve (35) is sleeved on the outer wall of the plug pin (53), and the power supply contact (33) and the charging contact (51) abut against each other, thereby forming an electrical connection.

4. The adapter device for transferring charging between two electronic devices according to claim 1, characterized in that: The charging component (32) is provided with a clamping portion (36), on which a power supply contact (33) is provided, and a charging contact (51) is provided on the housing of the second electronic device (50). The clamping portion (36) can be clamped on the housing of the second electronic device (50) to make the power supply contact (33) and the charging contact (51) abut against each other, thereby forming an electrical connection.

5. The adapter device for transferring charging between two electronic devices according to claim 1, characterized in that: The charging component (32) is provided with an elastic portion (37), a power supply contact (33) is provided on the elastic portion (37), a charging contact (51) is provided on the housing of the second electronic device (50), and the elastic portion (37) can elastically abut against the housing of the second electronic device (50) and make the power supply contact (33) and the charging contact (51) abut against each other, thereby forming an electrical connection.

6. An accessory for an electronic device, the accessory being attachable to a first electronic device (40), characterized in that: The adapter device comprises the adapter device according to any one of claims 1 to 5, wherein the adapter device (10) is fixedly connected to the accessory and is used to connect to the power supply of the first electronic device (40) so as to charge the second electronic device (50).

7. A kit for an electronic device, characterized in that: The adapter device comprises the adapter device according to any one of claims 1 to 5, and also comprises a first electronic device (40) and a second electronic device (50), wherein the adapter device (10) electrically connects the first electronic device (40) and the second electronic device (50), respectively, and transmits the power of the first electronic device (40) to the second electronic device (50) for charging.

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