CN113571947A

CN113571947A - Power adapter

Info

Publication number: CN113571947A
Application number: CN202010343776.9A
Authority: CN
Inventors: 赵斌
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-10-29
Anticipated expiration: 2040-04-27
Also published as: CN113571947B

Abstract

The application relates to a power adapter, which comprises a body, a connecting assembly and a cover body. The body includes a housing and a pin coupled to the housing. The connecting assembly is connected to the housing. The cover body is connected to the connecting assembly, the cover body can slide to a first position and a second position relative to the body through the connecting assembly, the cover body covers the plug pins in the first position, the plug pins protrude out of the shell in the second position, and the cover body is attached to the shell in the width direction of the shell. According to the power adapter, the cover body can slide relative to the body through the connecting assembly, the plug pins are covered at the first position, and the power adapter can have a thinner thickness, so that the light and thin design of the power adapter is realized, and the portability of the power adapter is improved; the lid is laminated in the casing in the width direction of casing when the second position, and the distance between the edge of participating in and the lid can satisfy power adapter creepage distance's requirement to promote power adapter's safety in utilization.

Description

Power adapter

Technical Field

The application relates to the technical field of chargers, in particular to a power adapter.

Background

The power adapter is generally used to connect an electronic device to a power source and charge the electronic device, and the end where the metal pins are located needs to meet the requirement of creepage distance in safety regulations, which hinders the light and thin design of the power adapter.

Disclosure of Invention

The embodiment of the application provides a power adapter to realize power adapter's frivolous design and can satisfy creepage distance's requirement.

A power adapter, comprising:

the pin connector comprises a body and a pin, wherein the pin is connected to the shell;

a connection assembly connected to the housing; and

the cover body is connected to the connecting assembly, the cover body can slide to a first position and a second position through the connecting assembly relative to the body, the cover body covers the plug pins in the first position, and the plug pins protrude out of the shell body in the second position, and the cover body is attached to the shell body in the width direction of the shell body.

According to the power adapter, the cover body can slide relative to the body through the connecting assembly, the plug pins are covered at the first position, and the power adapter can have a thinner thickness, so that the light and thin design of the power adapter is realized, and the portability of the power adapter is improved; the lid is laminated in the casing in the width direction of casing when the second position, and the distance between the edge of participating in and the lid can satisfy power adapter creepage distance's requirement to promote power adapter's safety in utilization.

In one embodiment, the width direction of the housing is parallel to the width direction of the pins.

In one embodiment, the connecting assemblies are disposed on two sides of the housing in the width direction, two covers are disposed, one of the covers is connected to the connecting assembly on one side of the housing, the other cover is connected to the connecting assembly on the other side of the housing, the two covers abut against each other in the first position, and the two covers are attached to two sides of the housing in the width direction in the second position.

In one embodiment, the case includes an end surface, a first side surface and a second side surface opposite to each other, and a third side surface and a fourth side surface opposite to each other, the first side surface and the second side surface are connected between the third side surface and the fourth side surface, the end surface is connected to one end of the first side surface, the second side surface, the third side surface and the fourth side surface, the pins protrude from the end surface, one of the covers is attached to the first side surface, and the other cover is attached to the second side surface in the second position.

In one embodiment, in the second position, the ends of the two covers close to the pins are flush with the end faces.

In one embodiment, the circumferential surfaces of the two covers are flush with the circumferential surface of the housing in the first position.

In one embodiment, one of the two cover bodies is provided with a magnet, and the other cover body is provided with a magnetic attraction piece, and the magnet and the magnetic attraction piece are attracted together when in the first position.

In one embodiment, the cover body is provided with a first mounting groove, the housing is provided with a second mounting groove, the connecting assembly comprises a first fixing piece, a second fixing piece and a connecting piece for connecting the first fixing piece and the second fixing piece, the first fixing piece is accommodated in the first mounting groove and fixedly connected with the cover body, the second fixing piece is accommodated in the second mounting groove and fixedly connected with the housing, and the connecting piece drives the cover body to switch between a first position and a second position through the first fixing piece.

In one embodiment, the cover body is provided with a containing groove spaced from the first installing groove, and the plug pin is contained in the containing groove at the first position.

In one embodiment, the first fixing member is provided with a first sliding groove, the second fixing member is provided with a second sliding groove, and the connecting member is provided with a first convex column and a second convex column, wherein the first convex column is in sliding fit with the first sliding groove, and the second convex column is in sliding fit with the second sliding groove.

In one embodiment, the first runner includes first and second spaced apart slots, the first post includes first and second spaced apart posts, the first post is slidably engaged with the first slot, and the second post is slidably engaged with the second slot; the second sliding groove comprises a third groove and a fourth groove which are communicated, the second convex column comprises a third column and a fourth column which are spaced, the third column is in sliding fit with the third groove, and the fourth column is in sliding fit with the fourth groove; the first column abuts against one end of the first groove, the second column abuts against one end of the second groove, the third column is located at the joint of the third groove and the fourth groove, and the fourth column is located at one end of the fourth groove; the first fixing piece can move along the end face of the second fixing piece in the width direction of the shell, so that the distance between the first fixing piece and the pin is increased, the second column moves towards the other tail end of the second groove, the third column moves in the direction away from the fourth groove in the third groove, and the fourth column moves towards the other tail end of the fourth groove; after the first fixing piece is separated from the end face of the second fixing piece along the width direction of the shell, the first fixing piece can move along the direction perpendicular to the width direction of the shell, so that the first column moves towards the other end of the first groove, the second column moves towards the other end of the second groove, and the fourth column moves towards the other end of the fourth groove until the cover body moves to the second position; when the first column abuts against the other end of the first groove, the second column abuts against the other end of the second groove, the third column is located at the joint of the third groove and the fourth groove, and the fourth column abuts against the other end of the fourth groove.

In one embodiment, one of the cover body and the shell body is provided with a magnet, the other one is provided with a magnetic attraction piece, and the magnet is attracted with the magnetic attraction piece in the second position.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a diagram illustrating a power adapter according to an embodiment, wherein a cover is located at a first position;

FIG. 2 is a schematic diagram of the power adapter shown in FIG. 1, wherein the cover is in a second position;

FIG. 3 is an exploded view of the power adapter of FIG. 2;

FIG. 4 is a schematic view of the body of the power adapter shown in FIG. 3;

FIG. 5 is a schematic diagram of a cover of the power adapter shown in FIG. 3;

FIG. 6 is an exploded view of the connection assembly of the power adapter of FIG. 3;

FIG. 7 is an exploded view of the cover of the power adapter of FIG. 1 in a first position;

FIG. 8 is a cross-sectional view of the connection assembly of the power adapter of FIG. 7 in a first state;

FIG. 9 is a cross-sectional view of the connection assembly of the power adapter of FIG. 8 in a second state;

FIG. 10 is a cross-sectional view of the connection assembly of the power adapter of FIG. 9 in a third state;

FIG. 11 is a cross-sectional view of a fourth state of the connection assembly of the power adapter of FIG. 10;

FIG. 12 is a cross-sectional view of a fifth state of the connection assembly of the power adapter of FIG. 11;

fig. 13 is an exploded view of the cover of the power adapter of fig. 12 in a second position.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 and 2, the power adapter 10 may be used to connect a power source and an electronic device and charge the electronic device. In some implementations, the electronic device is a smartphone. In other embodiments, the electronic device may be a tablet computer, a handheld game console, or the like. Referring to fig. 3, the power adapter 10 includes a body 100, a connecting assembly 200, and a cover 300, wherein the body 100 includes a housing 110 and pins 120, and the pins 120 are connected to the housing 110. In the present embodiment, the housing 110 has a substantially rectangular block shape, and electronic components such as a circuit board are provided therein. In other embodiments, the cross-section of the housing 110 may be rounded rectangular or racetrack shaped or otherwise. The runway shape is a figure formed by respectively connecting two short sides of a rectangle with semicircles externally. The pins 120 are made of metal, and in the embodiment of the present invention, the number of the pins 120 is two, and the two pins 120 are spaced apart from each other. In other embodiments, the number of pins 120 may be three.

The connecting assembly 200 is connected to the housing 110, and the cover 300 is connected to the connecting assembly 200 and can slide to a first position and a second position relative to the body 100 through the connecting assembly 200. Referring to fig. 1, in the first position, the cover 300 covers the pins 120, the pins 120 are hidden, and the power adapter 10 has a rectangular block shape and a relatively thin thickness. Referring to fig. 2, in the second position, the pins 120 protrude from the housing 110, and the cover 300 is attached to the housing 110 in the width direction of the housing 110, so that the pins 120 can be plugged into the power socket. Further, the width direction of the housing 110 is parallel to the width direction of the pins 120. The cover 300 is attached to the housing 110 at the second position, so that the thickness of the power adapter 10 is increased, and the pins 120 and the edge of the cover 300 can have a suitable distance in the width direction of the housing 110, so as to meet the requirement of the creepage distance of the power adapter 10 in the electricity safety specification, and further ensure the safety of the power adapter 10 in use.

In the power adapter 10, the cover 300 can slide relative to the main body 100 through the connecting assembly 200, and the pins 120 are covered at the first position, so that the power adapter 10 can have a thinner thickness, thereby realizing a light and thin design of the power adapter 10 and improving the portability of the power adapter 10; in the second position, the cover 300 is attached to the housing 110 in the width direction of the housing 110, and the distance between the pins 120 and the edge of the cover 300 can meet the requirement of the creepage distance of the power adapter 10, so as to improve the safety of the power adapter 10. Of course, it is understood that the pins 120 need not be hidden in the first position, for example, the pins 120 may be partially exposed, and the cover 300 covers the pins 120 and can protect the pins 120 in the first position, so as to achieve a light and thin design of the power adapter 10 and improve portability.

Further, the connecting assemblies 200 are disposed on both sides of the housing 110 in the width direction, two covers 300 are disposed, one cover 300 is connected to the connecting assembly 200 on one side of the housing 110, the other cover 300 is connected to the connecting assembly 200 on the other side of the housing 110, the two covers 300 are abutted to each other in the first position, and the two covers 300 are respectively attached to both sides of the housing 110 in the width direction in the second position.

Referring to fig. 4, taking the case 110 as a rectangular block as an example, the case 110 includes an end surface 111, a first side surface 113 and a second side surface 115 opposite to each other, and a third side surface 117 and a fourth side surface 119 opposite to each other, the first side surface 113 and the second side surface 115 are connected between the third side surface 117 and the fourth side surface 119, the end surface 111 is connected to one end of the first side surface 113, the second side surface 115, the third side surface 117, and the fourth side surface 119, and the pins 120 protrude from the end surface 111. Referring to fig. 2, in the second position, one of the covers 300 is attached to the first side 113, and the other cover 300 is attached to the second side 115. Further, referring to fig. 3, two connecting assemblies 200 are disposed on the side of the first side surface 113, and the two connecting assemblies 200 are disposed at intervals and can be driven by the cover 300 to move synchronously so as to improve the moving smoothness of the cover 300. The connecting members 200 on the side of the second side surface 115 are also provided in two and the two connecting members 200 are spaced apart to improve the motion stability of the other cover 300. Further, the connecting assemblies 200 on the two opposite sides of the housing 110 are in one-to-one correspondence, that is, when the number of the connecting assemblies 200 is 4, two of the connecting assemblies 200 are oppositely disposed on the two sides of the housing 110 in the width direction, and the remaining two connecting assemblies 200 are also oppositely disposed on the two sides of the housing 110 in the width direction.

The present application describes the movement state of the cover 300 with the first position as the initial position. In the first position, the two covers 300 are attached to each other in the width direction of the housing 110, and the pins 120 are hidden by the covers 300. Further, in some embodiments, the circumferential surfaces of the two covers 300 are flush with the circumferential surface of the housing 110 in the first position. Specifically, the cover 300 can be divided into a first cover 310 and a second cover 320, and referring to fig. 3, the first cover 310 has a first peripheral side 311, and a second peripheral side 312 and a third peripheral side 313 that are disposed opposite to each other, the first peripheral side 311 is connected between the second peripheral side 312 and the third peripheral side 313; the second cover 320 has a fourth side surface 321, and a fifth side surface 322 and a sixth side surface 323 opposite to each other, wherein the fourth side surface 321 is connected between the fifth side surface 322 and the sixth side surface 323. In the first position, the first peripheral side surface 311 is opposite to the fourth peripheral side surface 321, the first peripheral side surface 311 is flush with the first side surface 113, the second peripheral side surface 312, the fifth peripheral side surface 322 are flush with the third side surface 117, the third peripheral side surface 313, the sixth peripheral side surface 323 are flush with the fourth side surface 119, and the fourth peripheral side surface 321 is flush with the second side surface 115. In the power adapter 10 with the above-mentioned structure, when the cover 300 is in the first position, the power adapter 10 has a relatively thin thickness, and has good portability and appearance characteristics. Further, in some embodiments, one of the two covers 300 is provided with a magnet, and the other cover is provided with a magnetic member, and the magnet and the magnetic member are engaged with each other in the first position. Specifically, the magnetic member may be a magnetic metal member such as iron, cobalt, nickel and alloys thereof, and the magnetic member may also be a magnet. The arrangement of the magnet and the magnetic member enables the two cover bodies 300 to be reliably attached to each other in the first position, so as to prevent the two cover bodies 300 from being easily detached.

When a user needs to use the power adapter 10 to charge the electronic device, the cover 300 may be actuated to switch from the first position to the second position. Specifically, in the present embodiment, the structure of the connection assembly 200 enables the cover 300 to move along the width direction of the housing 110 to be separated from the housing 110, and then move along the direction parallel to the length extension direction of the pins 120 to the end of the housing 110 away from the pins 120 until the cover 300 is attached to the side surface of the housing 110 in the width direction of the housing 110, that is, to switch to the second position. Further, referring to fig. 2, in the second position, the ends of the two covers 300 close to the pins 120 are flush with the end surface 111. This configuration can enhance the appearance of the power adapter 10 in the second position and facilitate insertion of the prongs 120 into an electrical outlet by a user. Further, in some embodiments, one of the cover 300 and the housing 110 is provided with a magnet, and the other is provided with a magnetic member, and the magnet and the magnetic member are engaged in the second position. Specifically, the magnetic member may be a magnetic metal member such as iron, cobalt, nickel and alloys thereof, and the magnetic member may also be a magnet. The arrangement of the magnet and the magnetic attraction member can ensure that the two covers 300 are reliably attached to the housing 110 when in the second position, so as to prevent the two covers 300 from being easily detached from the housing 110.

Referring to fig. 5, taking the first cover 310 as an example, the first cover 310 is provided with a first mounting groove 314, referring to fig. 4, the housing 110 is provided with a second mounting groove 112, referring to fig. 6, the connecting assembly 200 includes a first fixing element 210, a second fixing element 220 and a connecting element 230 connecting the first fixing element 210 and the second fixing element 220, the first fixing element 210 is accommodated in the first mounting groove 314 and fixedly connected with the cover 300, the second fixing element 220 is accommodated in the second mounting groove 112 and fixedly connected with the housing 110, and the connecting element 230 drives the cover 300 to switch between the first position and the second position through the first fixing element 210.

Further, referring to fig. 5, in some embodiments, the cover 300 is provided with a receiving groove 315 spaced apart from the first mounting groove 314, and the pins 120 are received in the receiving groove 315 at the first position. The second cover 320 is similar to the first cover 310 in structure, and is not described in detail herein. The number of the receiving grooves 315 of each cover 300 may be two, and the two receiving grooves 315 are spaced apart from each other and spaced apart from the first mounting groove 314. The two receiving grooves 315 correspond to the two pins 120 one to one, and in the first position, one pin 120 is received in one of the receiving grooves 315, the other pin 120 is received in the other receiving groove 315, and the receiving groove 315 of the cover 300 can protect the pins 120 well. In other embodiments, the number of the receiving grooves 315 may be one, and the two pins 120 are received in the receiving grooves 315 at the first position.

Further, referring to fig. 6, 7 and 8, the first fixing member 210 is provided with a first sliding slot 211, the second fixing member 220 is provided with a second sliding slot 221, the connecting member 230 is provided with a first protruding column 231 and a second protruding column 233, the first protruding column 231 is in sliding fit with the first sliding slot 211, the second protruding column 233 is in sliding fit with the second sliding slot 221, so that the cover 300 can be switched between the first position and the second position through the sliding fit of the first protruding column 231 and the first sliding slot 211 and the sliding fit of the second protruding column 233 and the second sliding slot 221.

Further, the first runner 211 includes first and second spaced apart

slots

2111, 2113, and the first post 231 includes first and second spaced apart posts 2311, 2313, with the first post 2311 slidably engaging the first slot 2111 and the second post 2313 slidably engaging the second slot 2113. The second slot 221 includes a third slot 2211 and a fourth slot 2213 in communication, the second post 233 includes a third post 2331 and a fourth post 2333 spaced apart, the third post 2331 is slidably engaged with the third slot 2211, and the fourth post 2333 is slidably engaged with the fourth slot 2213. Further, the centers of the first column 2311, the second column 2313, the third column 2331 and the fourth column 2333 are located approximately on a straight line.

Referring to fig. 8, the first slot 2111 has a straight bar shape, the second slot 2113 includes an arc-shaped section 2113a and a bar-shaped section 2113b, the bar-shaped section 2113b is disposed in parallel with the first slot 2111, and the arc-shaped section 2113a protrudes outward to the side where the pin 120 is located. The third slot 2211 is straight and extends to the outer surface of the second fixing member 220, the fourth slot 2213 is arc-shaped, the fourth slot 2213 protrudes outwards to the side where the third slot 2211 is located, and the connection between the third slot 2211 and the fourth slot 2213 is located between two ends of the fourth slot 2213. In the first position, the first post 2311 abuts an end of the first slot 2111, the second post 2313 abuts an end of the second slot 2113, the third post 2331 is located at the junction of the third slot 2211 and the fourth slot 2213, and the fourth post 2333 is located at an end of the fourth slot 2213.

In the first position, when the user pulls the cover 300 outward along the width direction of the housing 110, the first fixing member 210 can move along the end surface 111 of the second fixing member 220 in the width direction of the housing 110, so that the distance between the first fixing member 210 and the pins 120 is increased, the distance between the first cover 310 and the second cover 320 and the distance between the first cover 310 and the second cover 320 are increased, and the distance between the first cover 310 and the second cover 320 is increased. With reference to fig. 9, the second post 2313 slides into the arcuate segment 2113a, and the third post 2331 moves in a direction away from the fourth slot 2213 in the third slot 2211, and the fourth post 2333 moves toward the other end of the fourth slot 2213. Referring to fig. 10, after the first fixing member 210 is separated from the end surface 111 of the second fixing member 220 in the width direction of the housing 110, the first fixing member 210 can move in the direction perpendicular to the width direction of the housing 110, that is, in the length direction of the housing 110, so that the first post 2311 moves toward the other end of the first slot 2111, the second post 2313 moves toward the other end of the second slot 2113, and the fourth post 2333 moves toward the other end of the fourth slot 2213. Referring to fig. 11, when the first fixing member 210 is separated from the end surface 111 of the second fixing member 220 in the width direction of the housing 110 and moves in the length direction of the housing 110, a center connecting line of the first column 2311, the second column 2313, the third column 2331 and the fourth column 2333 is substantially flush with the width direction of the housing 110. After this position, the first fastener is translated along the length of the housing until the second post 2313 abuts the other end of the second slot 2113 and the fourth post 2333 abuts the other end of the fourth slot 2213 and reaches the second position shown in fig. 12 and 13. In the second position, the first post 2311 abuts against the other end of the first slot 2111, the second post 2313 abuts against the other end of the second slot 2113, the third post 2331 is located at the connection position of the third slot 2211 and the fourth slot 2213, and the fourth post 2333 abuts against the other end of the fourth slot 2213, and the structure of the connecting member 230 enables the first cover 310 and the second cover 320 to be better attached to the two sides of the housing 110 in the width direction.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A power adapter, comprising:

a connection assembly connected to the housing; and

2. The power adapter as claimed in claim 1, wherein the width direction of the housing is parallel to the width direction of the pins.

3. The power adapter as claimed in claim 2, wherein the connecting assembly is disposed on both sides of the housing in the width direction, and the number of the covers is two, wherein one of the covers is connected to the connecting assembly on one side of the housing, and the other cover is connected to the connecting assembly on the other side of the housing, and the two covers abut against each other in the first position, and the two covers are attached to both sides of the housing in the width direction in the second position.

4. The power adapter as claimed in claim 3, wherein the housing includes a front surface, a first side surface and a second side surface opposite to each other, and a third side surface and a fourth side surface opposite to each other, the first side surface and the second side surface are connected between the third side surface and the fourth side surface, the front surface is connected to one end of the first side surface, the second side surface, the third side surface and the fourth side surface, the pins protrude from the front surface, one of the covers fits to the first side surface and the other cover fits to the second side surface in the second position.

5. The power adapter as claimed in claim 4, wherein in the second position the ends of the two covers adjacent the pins are flush with the end face.

6. The power adapter as claimed in claim 4, wherein the circumferential surfaces of the two covers are flush with the circumferential surface of the housing in the first position.

7. The power adapter as claimed in claim 3, wherein one of the two cover bodies is provided with a magnet, and the other cover body is provided with a magnetic member, and the magnet is engaged with the magnetic member in the first position.

8. The power adapter as claimed in any one of claims 1 to 7, wherein the cover has a first mounting groove, the housing has a second mounting groove, the connecting assembly includes a first fixing member, a second fixing member and a connecting member connecting the first fixing member and the second fixing member, the first fixing member is received in the first mounting groove and fixedly connected to the cover, the second fixing member is received in the second mounting groove and fixedly connected to the housing, and the connecting member drives the cover to switch between the first position and the second position through the first fixing member.

9. The power adapter as claimed in claim 8, wherein the cover body is provided with a receiving groove spaced from the first mounting groove, and the pins are received in the receiving groove in the first position.

10. The power adapter as claimed in claim 8, wherein the first fixing member is provided with a first sliding groove, the second fixing member is provided with a second sliding groove, and the connecting member is provided with a first protruding column and a second protruding column, the first protruding column is slidably fitted in the first sliding groove, and the second protruding column is slidably fitted in the second sliding groove.

11. The power adapter as recited in claim 10 wherein the first slide slot comprises first and second spaced apart slots, the first post comprises first and second spaced apart posts, the first post is slidably engaged with the first slot, and the second post is slidably engaged with the second slot; the second sliding groove comprises a third groove and a fourth groove which are communicated, the second convex column comprises a third column and a fourth column which are spaced, the third column is in sliding fit with the third groove, and the fourth column is in sliding fit with the fourth groove; the first column abuts against one end of the first groove, the second column abuts against one end of the second groove, the third column is located at the joint of the third groove and the fourth groove, and the fourth column is located at one end of the fourth groove; the first fixing piece can move along the end face of the second fixing piece in the width direction of the shell, so that the distance between the first fixing piece and the pin is increased, the second column moves towards the other tail end of the second groove, the third column moves in the direction away from the fourth groove in the third groove, and the fourth column moves towards the other tail end of the fourth groove; after the first fixing piece is separated from the end face of the second fixing piece along the width direction of the shell, the first fixing piece can move along the direction perpendicular to the width direction of the shell, so that the first column moves towards the other end of the first groove, the second column moves towards the other end of the second groove, and the fourth column moves towards the other end of the fourth groove until the cover body moves to the second position; when the first column abuts against the other end of the first groove, the second column abuts against the other end of the second groove, the third column is located at the joint of the third groove and the fourth groove, and the fourth column abuts against the other end of the fourth groove.

12. The power adapter as claimed in any one of claims 1-7, wherein one of the cover and the housing is provided with a magnet, and the other is provided with a magnetically attracting member, and in the second position, the magnet is engaged with the magnetically attracting member.