CN111293552A - Rotary travel conversion plug - Google Patents

Rotary travel conversion plug Download PDF

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Publication number
CN111293552A
CN111293552A CN201811489665.8A CN201811489665A CN111293552A CN 111293552 A CN111293552 A CN 111293552A CN 201811489665 A CN201811489665 A CN 201811489665A CN 111293552 A CN111293552 A CN 111293552A
Authority
CN
China
Prior art keywords
pole
plug
sheet
universal
contact piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811489665.8A
Other languages
Chinese (zh)
Inventor
萧逸忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUIZHOU XINXINGRONG ELECTRIC UTILITY PLASTIC CO LTD
Original Assignee
HUIZHOU XINXINGRONG ELECTRIC UTILITY PLASTIC CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HUIZHOU XINXINGRONG ELECTRIC UTILITY PLASTIC CO LTD filed Critical HUIZHOU XINXINGRONG ELECTRIC UTILITY PLASTIC CO LTD
Priority to CN201811489665.8A priority Critical patent/CN111293552A/en
Publication of CN111293552A publication Critical patent/CN111293552A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00Coupling parts supported only by co-operation with counterpart
    • H01R31/06Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/04Pins or blades for co-operation with sockets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/502Bases; Cases composed of different pieces
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/665Structural association with built-in electrical component with built-in electronic circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/717Structural association with built-in electrical component with built-in light source
    • H01R13/7175Light emitting diodes (LEDs)
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R35/00Flexible or turnable line connectors, i.e. the rotation angle being limited

Abstract

The invention discloses a rotary travel conversion plug, which comprises a universal plug-in sheet L pole, a universal plug-in sheet N pole, a socket inner support, an N pole elastic sheet, an L pole elastic sheet, a shell upper cover and a shell lower cover, wherein a T-shaped universal socket inner cover is arranged inside the shell upper cover, a socket inner support is arranged inside the T-shaped universal socket inner cover, a universal plug-in sheet L pole and a universal plug-in sheet N pole are arranged inside the socket inner support, a USB rotating shaft is arranged below the socket inner support, a contact sheet turntable assembly is arranged below the USB rotating shaft, a pin elastic sheet pressing plate is arranged below the contact sheet turntable assembly, the shell upper cover can freely rotate around the USB rotating shaft, so that the orientation of a USB interface is adjusted to meet the use requirements of people, the device adopts AC end input and AC and DC end output, the device can convert a American standard socket into a universal socket or a national standard five-hole socket and, and the UL pins can be folded, thereby being convenient for people to carry.

Description

Rotary travel conversion plug
Technical Field
The invention relates to the field of articles for daily use, in particular to a rotary travel conversion plug.
Background
As is known, with the development of science and technology, people who travel or go on a business can bring various electronic products, including DV, DC, mobile phone, GPS, etc., and the electronic products are bound to be provided with corresponding chargers. However, it is noted that for those who go to foreign public trunks or tourists, since the shapes of power outlets, the voltage conditions, and the like are different in each country, it is necessary to carry a switching outlet suitable for the destination country. The conversion socket is characterized in that different types of plugs are inserted into one end of the conversion socket, and the other end of the conversion socket is connected to a power socket, so that domestic electric sockets can be communicated with an international power supply. The good conversion socket jacks all accord with the standard, the plug length does not accord with the specification like the zero-load products on the small stall, the plug is loosened and falls off quickly, the maintenance cannot be found even if the plug is damaged, the quality of the conversion plug of the two brands which can be played and stably does not fall off is good on the market, and the conversion socket is durable.
However, the conventional conversion socket still serves as an alternating current power supply after converting the alternating current power supply, cannot output alternating current and direct current at the same time, does not have a USB (universal serial bus) socket, and is very inconvenient to use.
Disclosure of Invention
The present invention is directed to a rotary traveling adaptor plug to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a rotation type travel changeover plug, holds in the palm in the omnipotent inserted sheet L utmost point, omnipotent inserted sheet N utmost point, socket, the utmost point shell fragment of N, the utmost point shell fragment of L, shell upper cover and shell lower cover, the inside of shell upper cover is equipped with the omnipotent socket inner cup of T type, and the inside of the omnipotent socket inner cup of T type is equipped with and holds in the palm in the socket, and the inside of holding in the palm in the socket is equipped with the omnipotent inserted sheet L utmost point, the omnipotent inserted sheet N utmost point, and the below of holding in the palm in the socket is equipped with the USB rotation axis, and the below of USB rotation axis is equipped with the contact piece carousel subassembly.
As a further scheme of the invention: the lower ends of the L pole and the N pole of the universal insertion piece are fixedly connected with a universal insertion connecting piece.
As a still further scheme of the invention: the universal plug connecting piece is fixedly connected with the socket inner support through a copper nail.
As a still further scheme of the invention: the contact piece turntable assembly comprises a small turntable hardware, a large turntable hardware and a contact piece turntable plastic, and the small turntable hardware and the large turntable hardware are embedded in the contact piece turntable plastic.
As a still further scheme of the invention: the top of contact piece carousel subassembly is equipped with the utmost point of USB contact piece N utmost point, the USB contact piece L utmost point, and the silver nail has all been welded to the one end of the utmost point of USB contact piece N utmost point, the USB contact piece L utmost point, and the utmost point of USB contact piece N utmost point, USB contact piece L extremely passes through silver nail overlap joint respectively on little carousel hardware, big carousel hardware, and the extremely and omnipotent connection piece intercommunication of inserting is inserted respectively to USB contact piece N utmost point, USB contact piece L extremely.
As a still further scheme of the invention: n utmost point shell fragment, L utmost point shell fragment communicate with little carousel hardware, the big carousel hardware on the contact piece carousel subassembly respectively, switch on internal circuit, and the UL is installed respectively to the below of N utmost point shell fragment, L utmost point shell fragment and participates in the plastic part, and the below of N utmost point shell fragment, L utmost point shell fragment is equipped with UL and participates in the hardware component, and UL participates in the one end of hardware component and inserts UL and participates in the plastic part in, and UL participates in the hardware component and pins the plastic part with UL and rotate and be connected.
As a still further scheme of the invention: the universal socket is characterized in that a rotating shaft is arranged below an inner cover of the T-shaped universal socket, a hardware component and a plastic component are inserted into the UL, a through hole is formed in the bottom of the rotating shaft, a groove is formed in the side wall of the rotating shaft, a rotating shaft spring is installed in the groove, a steel ball is arranged at the other end of the rotating shaft spring, a lower shell cover is arranged below the rotating shaft, the rotating shaft is embedded in the lower shell cover, the lower shell cover is buckled with the upper shell cover, and a clamping groove is formed in the inner.
As a still further scheme of the invention: the inner wall fixedly connected with PCBA board of shell upper cover is provided with the USB interface on the PCBA board.
As a still further scheme of the invention: and the PCBA board is provided with an LED lamp.
As a still further scheme of the invention: universal plug-in sheet L utmost point is replaced for national standard plug-in sheet L utmost point, and universal plug-in sheet N utmost point is replaced for national standard plug-in sheet N utmost point, and the universal socket inner cup of T type is replaced for national standard and inserts the inner cup
Compared with the prior art, the invention has the beneficial effects that: the shell upper cover can be round USB rotation axis free rotation, thereby adjust the orientation of USB interface, in order to satisfy people's user demand, this device adopts AC end input, AC, DC end output, the AC part adopts the design of omnipotent socket, can insert the national standard, the American standard, multiple plugs such as the english standard, the DC part adopts the USB interface, can the disect insertion USB plug, this device is equipped with the LED lamp, the people of being convenient for use night, this device can convert the American standard socket into omnipotent socket or five hole sockets in national standard, export alternating current and direct current simultaneously, and UL participates in collapsible, the people of being convenient for carry.
Drawings
FIG. 1 is an exploded view of a rotating travel conversion plug;
FIG. 2 is a perspective view of embodiment 1 of the rotary travel conversion plug;
FIG. 3 is a schematic view of the UL pin hardware assembly of the rotating travel conversion plug in retracted position;
FIG. 4 is a schematic view of the rotatable travel conversion plug with the UL pin hardware assembly extended;
FIG. 5 is a schematic view of a contact piece turret assembly of the rotary travel switch plug;
FIG. 6 is a schematic diagram of the structure of the UL pin hardware assembly of the rotating travel conversion plug;
FIG. 7 is an internal block diagram of the UL pin hardware assembly of the rotating travel conversion plug when retracted;
FIG. 8 is an internal block diagram of the rotatable travel conversion plug with the UL pin hardware assembly extended;
FIG. 9 is a rear view of the UL pin hardware assembly of the rotating travel conversion plug in retracted position;
fig. 10 is a perspective view of embodiment 2 of the rotary travel conversion plug.
In the figure: 1-universal insertion sheet L pole; 2-universal insertion sheet N pole; 3, universal insertion connecting sheets; 4-copper nail; 5-socket inner support; 6-USB rotating shaft; 7-USB contact piece N pole; 8-USB contact piece L pole; 9-a contact patch carousel assembly; 10-a screw; 11-pin spring plate press plate; 12-an N-pole shrapnel; 13-L pole spring plate; 14-UL pin hardware assembly; 15-UL pin plastic parts; 16-silver nails; an inner cover of the 17-T type universal socket; 18-housing upper cover; 19-a snap ring; 20-a rotation shaft spring; 21-steel balls; 22-PCBA board; 23-a rotating shaft; 24-lower cover of the housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-9, in an embodiment of the present invention, a rotary travel adaptor plug includes a universal plug-in sheet L pole 1, a universal plug-in sheet N pole 2, a socket inner holder 5, an N pole plug sheet 12, an L pole plug sheet 13, a housing upper cover 18 and a housing lower cover 24, an upper surface of the housing upper cover 18 is open, a T-shaped universal socket inner cover 17 is disposed inside the housing upper cover 18, a socket inner holder 5 is disposed inside the T-shaped universal socket inner cover 17, the universal plug-in sheet L pole 1 and the universal plug sheet N pole 2 are disposed inside the socket inner holder 5, a universal plug-in sheet L pole 1 and a universal plug-in sheet N pole 2 are fixedly connected to lower ends of the universal plug-in sheet L pole 1 and the universal plug sheet N pole 2, the universal plug-in sheet 3 is fixedly connected to the socket inner holder 5 through a copper nail 4, a USB rotation shaft 6 is disposed below the socket inner holder 5, a, The contact piece turntable assembly comprises a large turntable hardware and a contact piece turntable plastic part, the small turntable hardware and the large turntable hardware are embedded in the contact piece turntable plastic part, a USB contact piece N pole 7 and a USB contact piece L pole 8 are arranged above a contact piece turntable assembly 9, silver nails 16 are welded at one ends of the USB contact piece N pole 7 and the USB contact piece L pole 8, the USB contact piece N pole 7 and the USB contact piece L pole 8 are respectively lapped on the small turntable hardware and the large turntable hardware through the silver nails 16, the USB contact piece N pole 7 and the USB contact piece L pole 8 are respectively communicated with a universal plug-in connecting piece 3 so as to conduct an internal circuit, a plug-in elastic piece pressing plate 11 is arranged below the contact piece turntable assembly 9, the contact piece turntable assembly 9 and the plug-in elastic piece pressing plate 11 are fixedly connected through screws 10, an N pole elastic piece 12 and an L pole elastic piece 13 are arranged below the plug-in elastic piece pressing plate 11, the N pole elastic piece 12 and the L, The large turntable hardware is communicated to conduct an internal circuit, a UL pin plastic part 15 is respectively arranged below an N pole elastic sheet 12 and an L pole elastic sheet 13, a UL pin hardware component 14 is arranged below the N pole elastic sheet 12 and the L pole elastic sheet 13, one end of the UL pin hardware component 14 is inserted into the UL pin plastic part 15, the UL pin hardware component 14 is rotatably connected with the UL pin plastic part 15, a connecting end is clamped by a clamping ring 19 to prevent the UL pin hardware component 14 from falling off, a rotating shaft 23 is arranged below an inner cover 17 of the T-shaped universal socket, the UL pin hardware component 14 and the UL pin plastic part 15 are arranged in the rotating shaft 23, a through hole is formed in the bottom of the rotating shaft 23, when the UL pin hardware component 14 rotates downwards, the through hole extends out, a groove is formed in the side wall of the rotating shaft 23, a rotating shaft spring 20 is arranged in the groove, and, the below of rotation axis 23 is equipped with shell lower cover 24, rotation axis 23 inlays in shell lower cover 24, shell lower cover 24 and 18 locks of shell upper cover, the draw-in groove has been seted up to the inner wall of shell lower cover 24, under the effect of rotation axis spring 20, the inner wall of shell lower cover 24 is hugged closely all the time to steel ball 21, shell lower cover 24 is at rotatory in-process, steel ball 21 imbeds in the draw-in groove, produce the location sense, the inner wall fixedly connected with PCBA board 22 of shell upper cover 18, be provided with the USB interface on PCBA board 22, utilize PCBA board 22 to turn into the DC power output with AC power, install the LED lamp on PCBA board 22, the utmost point 7 of USB contact piece N, the utmost point 8 of USB contact piece L respectively with PCBA board 22 electric connection, switch.
The working principle of the invention is as follows: the shell upper cover 18 can be round 6 free rotations of USB rotation axis, thereby adjust the orientation of USB interface, in order to satisfy people's user demand, this device adopts AC end input, AC, DC end output, the AC part adopts the design of omnipotent socket, can insert multiple plugs such as national standard, the American standard, the english standard, the DC part adopts the USB interface, can the disect insertion USB plug, this device is equipped with the LED lamp, the people of being convenient for use night, this device AC end input part is that UL participates in the foot, and can fold, and convenient for accomodate and carry.
Example 2
Referring to fig. 1-10, compared with embodiment 1, the universal plug-in sheet L pole 1 can be replaced by a national standard plug-in sheet L pole, the universal plug-in sheet N pole 2 can be replaced by a national standard plug-in sheet N pole, and the T-shaped universal socket inner cover 17 can be replaced by a national standard plug-in inner cover, according to the design of a national standard five-hole socket, the national standard socket can be converted into a national standard five-hole socket.
It should be particularly noted that, in the present application, the universal plug-in sheet L pole 1, the universal plug-in sheet N pole 2, the socket inner holder 5, the N pole elastic sheet 12, the L pole elastic sheet 13, the housing upper cover 18 and the housing lower cover 24 are applications in the prior art, the contact sheet turntable assembly, the UL pin plastic part and the PCBA board are innovation points of the present application, and can convert a standard socket in the united states into a universal socket or a standard five-hole socket, and output ac power and dc power at the same time, and the UL pin is foldable, so that people can carry the socket conveniently.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A rotary travel conversion plug comprises a universal plug-in sheet L pole (1), a universal plug-in sheet N pole (2), a socket inner support (5), an N pole elastic sheet (12), an L pole elastic sheet (13), a shell upper cover (18) and a shell lower cover (24), the novel plug-in type universal socket is characterized in that a T-shaped universal socket inner cover (17) is arranged inside an upper shell cover (18), a socket inner support (5) is arranged inside the T-shaped universal socket inner cover (17), a universal plug-in sheet L pole (1) and a universal plug-in sheet N pole (2) are arranged inside the socket inner support (5), a USB rotating shaft (6) is arranged below the socket inner support (5), a contact piece turntable assembly (9) is arranged below the USB rotating shaft (6), a plug-in sheet pressing plate (11) is arranged below the contact piece turntable assembly (9), and an N pole spring sheet (12) and an L pole spring sheet (13) are arranged below the plug-in sheet pressing plate (11).
2. The rotary traveling adaptor plug according to claim 1, wherein the lower ends of the L pole (1) and the N pole (2) of the universal plug are fixedly connected with a universal plug connecting piece (3).
3. The rotary travel conversion plug according to claim 2, characterized in that the universal plug connecting piece (3) is fixedly connected with the socket inner support (5) through a copper nail (4).
4. The rotating travel conversion plug of claim 1, wherein the contact patch turret assembly (9) comprises a small turret hardware, a large turret hardware and a contact patch turret plastic, the small turret hardware and the large turret hardware being embedded within the contact patch turret plastic.
5. The rotary travel conversion plug according to claim 4, wherein a USB contact piece N pole (7) and a USB contact piece L pole (8) are arranged above the contact piece turntable assembly (9), silver nails (16) are welded at one ends of the USB contact piece N pole (7) and the USB contact piece L pole (8), the USB contact piece N pole (7) and the USB contact piece L pole (8) are respectively lapped on small turntable hardware and large turntable hardware through the silver nails (16), and the USB contact piece N pole (7) and the USB contact piece L pole (8) are respectively communicated with the universal plug connection piece (3).
6. The rotary travel conversion plug according to claim 4, wherein the N pole spring (12) and the L pole spring (13) are respectively communicated with the small turntable hardware and the large turntable hardware on the contact piece turntable assembly (9) to conduct an internal circuit, the UL pin plastic (15) is respectively installed below the N pole spring (12) and the L pole spring (13), the UL pin hardware (14) is installed below the N pole spring (12) and the L pole spring (13), one end of the UL pin hardware (14) is inserted into the UL pin plastic (15), and the UL pin hardware (14) is rotatably connected with the UL pin plastic (15).
7. The rotary travel conversion plug according to claim 4, wherein a rotating shaft (23) is arranged below the inner cover (17) of the T-shaped universal socket, the UL pin hardware component (14) and the UL pin plastic component (15) are installed in the rotating shaft (23), a through hole is formed in the bottom of the rotating shaft (23), a groove is formed in the side wall of the rotating shaft (23), a rotating shaft spring (20) is installed in the groove, steel balls (21) are arranged at the other end of the rotating shaft spring (20), a lower housing cover (24) is arranged below the rotating shaft (23), the rotating shaft (23) is embedded in the lower housing cover (24), the lower housing cover (24) is buckled with the upper housing cover (18), and a clamping groove is formed in the inner wall of the lower housing cover (24).
8. The rotary travel conversion plug according to claim 4, wherein a PCBA (22) is fixedly connected to the inner wall of the housing upper cover (18), and a USB interface is arranged on the PCBA (22).
9. The rotating travel conversion plug of claim 8, wherein the PCBA board (22) has LED lights mounted thereon.
10. The rotary travel adaptor plug of claim 8, wherein the universal plug blades L pole (1) is replaced by a national standard plug blade L pole, the universal plug blades N pole (2) is replaced by a national standard plug blade N pole, and the T-shaped universal socket inner cover (17) is replaced by a national standard plug inner cover.
CN201811489665.8A 2018-12-06 2018-12-06 Rotary travel conversion plug Pending CN111293552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811489665.8A CN111293552A (en) 2018-12-06 2018-12-06 Rotary travel conversion plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811489665.8A CN111293552A (en) 2018-12-06 2018-12-06 Rotary travel conversion plug

Publications (1)

Publication Number Publication Date
CN111293552A true CN111293552A (en) 2020-06-16

Family

ID=71022940

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811489665.8A Pending CN111293552A (en) 2018-12-06 2018-12-06 Rotary travel conversion plug

Country Status (1)

Country Link
CN (1) CN111293552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113794077A (en) * 2021-08-31 2021-12-14 宁波公牛数码科技有限公司 Changeover plug and charger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113794077A (en) * 2021-08-31 2021-12-14 宁波公牛数码科技有限公司 Changeover plug and charger

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