CN113543537A

CN113543537A - Power adapter

Info

Publication number: CN113543537A
Application number: CN202010292514.4A
Authority: CN
Inventors: 刘启潮; 赵斌
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-10-22
Anticipated expiration: 2040-04-14
Also published as: WO2021208571A1; CN113543537B

Abstract

The present application relates to a power adapter comprising: the body comprises a shell and pins connected to the shell, and the shell comprises a first surface. The protective cover comprises a second surface connected with the shell, and can rotate relative to the shell to form a closed state and an open state; in the closed state, the protective cover or the shell protects the pins; in the open state, the first surface and the second surface form a working mating surface, and the pins can protrude from the working mating surface. When the portable power adapter is not used, the power adapter can be in a closed state, the plug pins are protected by the protective cover or the shell, the plug pins are prevented from stabbing objects close to the power adapter, the plug pins can be protected, and the portable power adapter is good in portability. The power adapter has a complete appearance surface in a closed state, and the appearance integrity is good. Under the open mode, first surface and second surface form the work fitting surface for the plug pin can satisfy the user state, thereby makes the thickness of casing less, reduces power adapter's volume.

Description

Power adapter

Technical Field

The present application relates to the field of electronic product technology, and more particularly, to a power adapter.

Background

The market has power adapter, and when not using, the participate in is folding to be accomodate in the casing, with the rotatory casing that stretches out of participate in during the use. The folding structure of the power adapter needs to occupy a larger space inside the shell, so that the power adapter has larger overall dimension and lower portability.

Disclosure of Invention

An embodiment of the present application provides a power adapter to solve the technical problems of a large size and a low portability of the power adapter.

A power adapter, comprising:

a body comprising a housing and pins connected to the housing, the housing comprising a first surface; and

a protective cover connected to the housing, the protective cover including a second surface connected to the housing, the protective cover being rotatable relative to the housing to have a closed state and an open state;

in the closed state, the protective cover or the housing protects the pins;

in the open state, the first surface and the second surface form a working mating surface, and the pins can protrude from the working mating surface.

When the power adapter is not used, the power adapter can be in a closed state, and in the closed state, the plug pins are protected by the protective cover or the shell, so that the plug pins are prevented from stabbing objects close to the power adapter and can be protected, and the power adapter is good in portability. The power adapter has a complete appearance surface in a closed state, and the appearance integrity is good. Under open mode, first surface and second surface form the work fitting surface for participate in can satisfy the user state, thereby make the less that the thickness of casing can set up, and then can reduce power adapter's whole volume.

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 perspective view of a power adapter provided in one embodiment, wherein the power adapter is in a closed state;

FIG. 2 is a side view of the power adapter of FIG. 1;

FIG. 3 is a bottom view of the power adapter of FIG. 1;

FIG. 4 is a perspective view of the power adapter of FIG. 1 in one embodiment, wherein the power adapter is in an open state;

FIG. 5 is an exploded view of the power adapter of FIG. 1;

FIG. 6 is a side view of the power adapter of FIG. 1, with the power adapter between an open state and a closed state;

FIG. 7 is a side view of the power adapter of FIG. 4;

FIG. 8 is a side view of the power adapter of FIG. 1, with the power adapter in an open position;

FIG. 9 is a perspective view of the hinge mechanism of the power adapter of FIG. 1 in an embodiment, wherein the hinge mechanism is in a first state;

FIG. 10 is a perspective view of the hinge mechanism of FIG. 9 at another angle;

FIG. 11 is an exploded view of the hinge mechanism of FIG. 9;

FIG. 12 is a perspective view of the hinge mechanism of FIG. 9, with the hinge mechanism in a second state;

FIG. 13 is a cross-sectional perspective view of the hinge mechanism of FIG. 9;

FIG. 14 is a cross-sectional view of the hinge mechanism of FIG. 9;

FIG. 15a is a cross-sectional perspective view of the hinge mechanism of FIG. 12;

FIG. 15b is a cross-sectional view of the hinge mechanism of FIG. 12;

FIG. 16 is a state change diagram for the power adapter and hinge mechanism according to one embodiment;

FIG. 17 is a cross-sectional view of the power adapter of FIG. 1 in one embodiment;

FIG. 18 is a perspective view of the first protective cover of the power adapter of FIG. 1 rotated 45 from the closed position;

FIG. 19 is a cross-sectional view of the power adapter of FIG. 18;

FIG. 20 is a perspective view of the hinge mechanism in the power adapter of FIG. 18;

FIG. 21 is a perspective view of the hinge mechanism of FIG. 20 at another angle;

FIG. 22 is a cross-sectional perspective view of the hinge mechanism shown in FIG. 20;

FIG. 23 is a cross-sectional view of the hinge mechanism shown in FIG. 20;

FIG. 24 is a cross-sectional view of the first protective cover of the power adapter of FIG. 1 rotated 120 from the closed position;

FIG. 25 is a perspective view of the hinge mechanism in the power adapter of FIG. 24;

FIG. 26 is a cross-sectional perspective view of the hinge mechanism of FIG. 25;

FIG. 27 is a cross-sectional view of the hinge mechanism of FIG. 25;

FIG. 28 is a perspective view of the first protective cover of the power adapter of FIG. 1 rotated 180 from the closed position;

FIG. 29 is a cross-sectional perspective view of the power adapter of FIG. 28;

FIG. 30 is a cross-sectional view of the power adapter of FIG. 28;

FIG. 31 is a cross-sectional view of the power adapter of FIG. 4;

FIG. 32 is a perspective view of the hinge mechanism of the power adapter of FIG. 1 in another embodiment, wherein the hinge mechanism is in a first state;

FIG. 33 is a perspective view of the hinge mechanism of FIG. 32 at another angle;

FIG. 34 is an exploded view of the hinge mechanism of FIG. 32;

FIG. 35 is a cross-sectional perspective view of the hinge mechanism shown in FIG. 32;

FIG. 36 is a cross-sectional view of the hinge mechanism of FIG. 32;

FIG. 37 is a perspective view of the hinge mechanism shown in FIG. 32, with the hinge mechanism in a second state;

FIG. 38 is a perspective view of the power adapter of FIG. 1 in another embodiment, wherein the power adapter is in an open state;

FIG. 39 is an enlarged view of the portion B of the power adapter shown in FIG. 38;

FIG. 40 is an enlarged view of the portion A of the power adapter shown in FIG. 4;

FIG. 41 is a cross-sectional view of the power adapter of FIG. 1 in one embodiment;

FIG. 42 is a cross-sectional view of the power adapter of FIG. 24 in one embodiment;

FIG. 43 is a cross-sectional view of the power adapter of FIG. 4 in one embodiment.

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.

As shown in fig. 1 and 4, in one embodiment, a power adapter 10 is provided that includes a body, a protective cover 20, and a hinge mechanism 40. The body includes a housing 30 and a pin 60, the pin 60 being connected to the housing 30. It is to be understood that "connected" includes direct connection, in which the pin 60 is directly connected to the housing 30, and indirect connection, in which the pin 60 is connected to an element within the housing 30 so as to be fixed to the housing 30 or movable relative to the housing 30. The housing 30 has a first surface 33, and the protection cover 20 is connected to the first surface 33, and the pins 60 are illustrated as protruding from the first surface 33 in this application.

The hinge mechanism 40 is connected between the housing 30 and the protective cover 20 such that the protective cover 20 can rotate relative to the housing 30, thereby allowing the power adapter 10 to have a closed state and an open state. As shown in fig. 1, in the closed state, the protective cover 20 covers the housing 30, and at least a part of the pins 60 is accommodated in the protective cover 20 or the housing 30, so that the protective cover 20 or the housing 30 can protect the pins 60. As shown in fig. 4, the protective cover 20 has a second surface 140 connected to the housing 30, and in the open state, the second surface 140 of the protective cover 20 is flush with the first surface 33 of the housing 30 or has a height difference within a predetermined range, and forms a working engagement surface 90. When the power adapter 10 is electrically connected to an external power source, the working mating surface 90 is a surface of the power adapter 10 that is attached to or close to the external power source.

It is understood that all "flush" described in the embodiments of the present application may also be "substantially flush", and that flush may be entirely within a plane, and there may be a range of height differences, such as a height difference between the second surface 140 and the first surface 33 of the protective cover 20 of no greater than 2mm or 5mm or no greater than 10mm or other dimensions, such as a height difference of no greater than 1mm, which is also within the scope of the present application.

In one embodiment, the distance between the pins 60 and the edge of the working mating surface 90 is not less than a predetermined value, such as 5.1mm or 6.5mm or 7.9mm, so that the power adapter 10 can meet the safety requirements. It is understood that the power adapter 10 has a length direction, a width direction and a thickness direction, and the distance from the pins 60 to the edge of the working mating face 90 in the thickness direction and the width direction of the power adapter 10 is not less than a preset value.

In the power adapter 10 of the present application, the protective cover 20 can rotate relative to the housing 30 by the hinge mechanism 40 to be in the closed state and the open state. In the closed state, the pins 60 are protected from exposure by the protective cover 20 or the housing 30 so as not to stab an object near the power adapter 10, and the pins 60 can be protected for portability. In the open state, the second surface 140 and the first surface 33 form the working mating surface 90 to meet the use requirement (e.g., the safety requirement) of the power adapter 10, so that the thickness of the housing 30 itself can be set to be smaller (e.g., much smaller than the preset value), and the overall volume of the power adapter 10 can be greatly reduced compared to the volume of the related art, such as the power adapter with the pins folded and received in the housing by rotation.

As shown in fig. 1 and 4, in one embodiment, the protective cover 20 includes a first protective cover 100 and a second protective cover 200, both of which are fixed on two opposite sides of the edge of the first surface 33 of the housing 30 and are located at the same end of the housing 30 as the pins 60. In the closed state, the first protective cap 100 and the second protective cap 200 are attached to each other. In the open state, the first protective cap 100 and the second protective cap 200 are respectively attached to two opposite sides of the housing 30.

As shown in fig. 1 to 4, in one embodiment, the power adapter 10 has a length direction arranged along the Y direction, a width direction arranged along the X direction, and a thickness direction arranged along the Z direction. The pins 60 extend in the Y direction, which is the longitudinal direction of the power adapter 10, i.e., the longitudinal direction of the pins 60 is the Y direction. The housing 30 includes third and fourth oppositely disposed

surfaces

31, 32, eleventh and twelfth oppositely disposed

surfaces

35, 36, and first and tenth oppositely disposed

surfaces

33, 34. The third surface 31 and the fourth surface 32 define a thickness direction of the power adapter 10, i.e., a Z direction, the eleventh surface 35 and the twelfth surface 36 define a width direction of the power adapter 10, i.e., an X direction, the first surface 33 and the tenth surface 34 define a length direction of the housing 30, and the length direction of the power adapter 10, i.e., the Y direction, is the same as the length direction of the housing 30. The pins 60 extend out of the housing 30 along the length of the power adapter 10. In another embodiment, the pins 60 may also extend along the width of the power adapter 10, and may be designed according to the actual requirements of the power adapter 10. The first protective cap 100 is attached to the intersection of the first surface 33 and the third surface 31, and the second protective cap 200 is attached to the intersection of the first surface 33 and the fourth surface 32.

In one embodiment, the thickness of the protective cover 20 corresponds to the dimension of the first surface 33 in the thickness direction of the power adapter 10. "consistent" may be understood as "equal" or "approximately equal". When the protective cover 20 includes the first protective cover 100 and the second protective cover 200, the thickness of the protective cover 20 is the sum of the dimensions of the first protective cover 100 and the second protective cover 200 in the thickness direction of the power adapter 10, i.e., the Z direction. Thus, in the closed state, the surface of the side of the first protective cover 100 facing away from the second protective cover 200 and the third surface 31 can be flush or substantially flush, and the surface of the side of the second protective cover 200 facing away from the first protective cover 100 and the fourth surface 32 can be flush or substantially flush, so that the power adapter 10 is thin in size and convenient to carry in the closed state.

In another embodiment, the protection cover 20 may also include only the first protection cover 100, and the thickness of the protection cover 20 is the dimension of the first protection cover 100 in the thickness direction of the power adapter 10, i.e. the Z direction. The dimension of the first cap 100 in the Z direction, i.e., the thickness of the first cap 100, coincides with the dimension of the first surface 33 in the Z direction. In the closed state, the surfaces of the first protective cover 100 on both sides in the Z direction are flush or substantially flush with the third surface 31 and the fourth surface 32, respectively, so that the power adapter 10 is thin in size and convenient to carry. In the open state, the first protection cover 100 is attached or substantially attached to the third surface 31 or the fourth surface 32 of the housing 30, so that the second surface 140 is flush or substantially flush with the first surface 33 to form the working mating surface 90, and the distance between the pins 60 and the edge of the working mating surface 90 is not less than the preset value, so as to meet the use requirement (e.g., the safety requirement) of the power adapter 10. The present application will be described in detail with reference to the embodiment in which the protection cover 20 includes a first protection cover 100 and a second protection cover 200. It is understood that the protective cap 20 includes only the first protective cap 100, and the case where the thickness of the first protective cap 100 is the same as the thickness of the housing 30 is also within the protection scope of the present application.

As shown in fig. 4 and 5, in an embodiment, a receiving space is formed in the housing 30, a circuit board 80 is disposed in the receiving space, and the circuit board 80 is electrically connected to the pins 60. In an embodiment, the housing 30 is a rectangular parallelepiped or square structure, and the edge of the housing 30 can be smoothly transited, so that the power adapter 10 has no rib and has a good hand feeling. In other embodiments, the body may also be a cylindrical structure or other structures, and is not limited herein. The shell 30 is provided with a charging interface 341, the charging interface 341 and the pin 60 are respectively located at two opposite ends of the shell 30, and the external electronic element can penetrate through the charging interface 341 and be electrically connected with the circuit board 80, so that the external electronic element is electrically connected with the pin 60, and after the power adapter 10 is electrically connected with the power supply, the power supply can supply power to the electronic element. It should be understood that the electronic component may be an intermediate connection line such as a data line, an electronic device such as a mobile phone, a watch, a tablet, or a computer, or a combination of an electronic device and a corresponding data line, which is not limited herein.

As shown in fig. 4 and 5, in one embodiment, the housing 30 is made of plastic. The housing 30 includes a first case 301 and a second case 302, and the pins 60 are fixed to the first case 301. The first and

second shells

301 and 302 are fixed by ultrasonic heat fusion or other processes, and the second shell 302 wraps around the first shell 301 with the first surface 33 exposed. The plug 60 and the first shell 301 are molded integrally by an injection molding, and the first shell 301 has a second receiving groove 331, and the protective cover 20 has a first receiving groove 141 at a position corresponding to the second receiving groove 331 for facilitating the subsequent installation of the hinge mechanism 40. It is understood that the third surface 31, the fourth surface 32, the tenth surface 34, the eleventh surface 35, and the twelfth surface 36 are located at the second housing 302.

As shown in fig. 4 to 6, in an embodiment, the first protective cover 100 is assembled by a first outer shell and a first inner shell, and includes a fifth surface 110 and a sixth surface 120 that are opposite to each other, a thirteenth surface 130 and a second surface 140 that are opposite to each other, and a fourteenth surface 150 and a fifteenth surface 160 that are opposite to each other. The fifth surface 110 is located on the first outer shell and the sixth surface 120 is located on the first inner shell. The adjacent surfaces of first protective cap 100 may have a smooth transition therebetween, such that first protective cap 100 has a smooth feel. It will be appreciated that the second surface 140 may or may not have a chamfer with a smooth transition to the adjacent surface. The second protective cover 200 is assembled from a second outer shell and a second inner shell, and includes a seventh surface 210 and an eighth surface 220, which are opposite to each other, a sixteenth surface 230 and a ninth surface 240, which are opposite to each other, and a seventeenth surface 250 and an eighteenth surface 260, which are opposite to each other. The seventh surface 210 is located on the second outer shell and the eighth surface 220 is located on the second inner shell. The adjacent surfaces of the second protective cover 200 can be smoothly transited, so that the second protective cover 200 has a smooth feel. It is understood that the ninth surface 240 may or may not have a chamfer to smooth the transition to the adjacent surface.

As shown in fig. 2, 6 and 7, in an embodiment, the first protective cover 100 and the second protective cover 200 can rotate relative to the housing 30 around the width direction of the power adapter 10, so that the first protective cover 100 and the second protective cover 200 have a closed state and an open state, i.e., the power adapter 10 has a closed state and an open state. In another embodiment, the first protective cover 100 and the second protective cover 200 can also rotate relative to the housing 30 about the length direction of the power adapter 10. As shown in fig. 7, in the open state, the first protective cover 100 and the second protective cover 200 face away from each other, the first protective cover 100 is attached to one side of the housing 30, the second protective cover 200 is attached to the other side of the housing 30, the end face of the first protective cover 100, the end face of the second protective cover 200 connected to the housing 30 are flush with the end face of the housing 30 where the pins 60 are disposed, that is, the second surface 140 and the ninth surface 240 are flush with the first surface 33, the second surface 140, the ninth surface 240 and the first surface 33 form the working mating surface 90, and the pins 60 are exposed. The user may insert the prongs 60 into the power source with the working mating surface 90 attached to the power source.

In the embodiments of the present application, all "fits" described may be substantially fits, that is, fits described in the embodiments of the present application include at least the following cases: in the first case, two attached surfaces are completely attached without gaps; in the second case, a gap exists between two surfaces to be attached, for example, the gap between the first protective cover 100 and the second protective cover 200 and the surfaces on two sides of the housing 30 is not greater than 1mm or 2mm or other dimensions, and in this case, within the protection scope of the present application, the two surfaces to be attached may be parallel or non-parallel; in the third case, two surfaces to be attached are in partial contact, that is, the two surfaces to be attached are not completely attached but partially attached, and a gap exists between the two parts.

As shown in fig. 1 and 2, in the closed state, the entire structure of the pin 60 is covered by the first protective cover 100 and the second protective cover 200, the sixth surface 120 and the eighth surface 220 are flush and contact with each other, the fifth surface 110 is flush with the third surface 31, the seventh surface 210 is flush with the fourth surface 32, the fourteenth surface 150 is flush with the eleventh surface 35, and the fifteenth surface 160 is flush with the twelfth surface 36. The surfaces may be flush with each other, coplanar, or have some height difference, and are within the scope of the present application. When the sixth surface 120 and the eighth surface 220 are bonded, three cases of the above-mentioned explanation for bonding are included, and are not described herein again. In the closed state, the pins 60 are hidden by the cover, and when the user puts the power adapter 10 into a pocket or a trunk, the power adapter 10 does not damage the surrounding objects. In another embodiment, in the closed state, a part of the structure of the pin 60 is covered by the first protective cover 100 and the second protective cover 200, and a part of the structure is exposed from or protrudes from the first protective cover 100 and the second protective cover 200.

As shown in fig. 4, in an embodiment, the first inner housing of the first protective cover 100 defines a first engaging groove 121, the first engaging groove 121 extends to the sixth surface 120, and the shape of the first engaging groove 121 is similar to the shape of the plug 60; the second inner shell of the second protective cover 200 is formed with a second slot 221, the second slot 221 extends to the eighth surface 220, and the shape of the second slot 221 is similar to the shape of the pin 60. In the closed state, the first card slot 121 and the second card slot 221 are in communication, and the pins 60 can be received in the first card slot 121 and the second card slot 221. In one embodiment, the first slot 121 extends to the second surface 140 in the Y direction, which is the length direction of the pin 60, but is spaced from the thirteenth surface 130; the second card slot 221 extends to the ninth surface 240, but is spaced from the sixteenth surface 230; the pins 60 are completely hidden and not exposed when the power adapter 10 is in the closed state, and the appearance of the power adapter 10 is in a cuboid or cube structure, so that the appearance integrity of the power adapter 10 is ensured.

In another embodiment, in the length direction of the pin 60, i.e., the Y direction, the first card slot 121 extends to the second surface 140 and the thirteenth surface 130, and the second card slot 221 extends to the ninth surface 240 and the sixteenth surface 230; that is, the first protective cover 100 and the second protective cover 200 are equal to the protruding length of the plug pins 60 from the housing 30, and in the closed state of the power adapter 10, the plug pins 60 are flush with the thirteenth surface 130 and the sixteenth surface 230, respectively, so that the power adapter 10 has a smaller length, is thinner and lighter, and is convenient to carry.

It will be appreciated that first card slot 121 extends to second surface 140 and second card slot 221 extends to ninth surface 240, but working mating surface 90 is defined as the surface that second surface 140, first surface 33 and ninth surface 240 form in the open state when first card slot 121 and second card slot 221 are omitted. When the number of the protective covers 20 is 1, the working mating face 90 is defined as a face where the second face 140 and the first face 33 are formed in the open state when the first card slot 121 is omitted.

In one embodiment, the number of the pins 60 is 2, and the number of the first card slots 121 and the number of the second card slots 221 are 2. In another embodiment, the number of the pins 60 is 1, 3 or more, and the number of the first card slots 121 and the second card slots 221 corresponds to the number of the pins 60. The shape of the pin 60 may be cylindrical or flat, and is not particularly limited herein. In the present application, the pin 60 is described in detail as an example of a long and flat structure. In the open state, the longitudinal direction of the pins 60 is arranged along the longitudinal direction of the power adapter 10, i.e., the Y direction, the width direction of the pins 60 is arranged along the thickness direction of the power adapter 10, i.e., the Z direction, and the thickness direction of the pins 60 is arranged along the width direction of the power adapter 10, i.e., the X direction.

In another embodiment, the first protective cap 100 is a hollow open box structure, and the second protective cap 200 is a hollow open box structure. In the closed state, the first protective cover 100 and the second protective cover 200 form a closed inner space, the pins 60 are accommodated in the inner space formed by the first protective cover 100 and the second protective cover 200, and the number of the pins 60 is not limited.

As shown in fig. 2 and fig. 7, in an embodiment, when the power adapter 10 is in the open state, compared with the closed state, the first protective cover 100 and the second protective cover 200 are respectively rotated by about 180 ° around the width direction of the power adapter 10, that is, when the power adapter 10 is in the closed state, the first protective cover 100 and the second protective cover 200 are rotated by 180 ° relative to the housing 30, so that the fifth surface 110 is attached to the third surface 31, the seventh surface 210 is attached to the fourth surface 32, and the power adapter 10 is in the open state.

In one embodiment, in the open state, the length of the pins 60 is perpendicular to the first surface 33, "perpendicular" may be understood as "substantially perpendicular," such that the pins 60 can be inserted into the holes of the external power source, such that the external power source can charge the electronic device through the power adapter 10. Between the closed state and the open state, the pins 60 are inclined with respect to the first surface 33, such as the pins 60 are inclined in the thickness direction, i.e. Z-direction, or in the width direction, i.e. X-direction, of the power adapter 10, i.e. the length direction of the pins 60 forms an acute angle with the first surface 33. Such that in this state, the pins 60 cannot be inserted into the holes of the external power source, such that the power adapter 10 cannot be electrically connected to the external power source between the closed state and the open state. It will be appreciated that, between the closed state and the open state, the user needs to grip the third surface 31 and the fourth surface 32 of the housing 30 with fingers, and the distance between the pins 60 and the user's fingers may be less than a predetermined value and not meet the safety requirements, thereby posing a risk of electric shock to the user. By providing the prongs 60 to be inclined relative to the first surface 33 between the closed and open positions, the prongs 60 cannot be inserted into the aperture of the external power source, thereby avoiding the risk of electrical shock to the user.

In another embodiment, in the open state, the width direction of the pins 60 is perpendicular to the plane where the length direction and the width direction of the power adapter 10 lie, i.e., the width direction of the pins 60 is perpendicular to the XY plane, i.e., the thickness direction of the pins 60 is the same as the Z direction. So that the pins 60 can be inserted into the holes of the external power source, so that the external power source can charge the electronic device through the power adapter 10. Between the closed state and the open state, an included angle between the width direction of the plug pin 60 and a plane where the length direction and the width direction of the power adapter 10 are located is an acute angle, that is, an included angle between the width direction of the plug pin 60 and the XY plane is an acute angle. It will be appreciated that the prongs 60 are axially rotated about the Y axis by a set angle from the open position between the closed position and the open position. The 2 pins 60 are substantially parallel and staggered, so that the pins cannot be inserted into holes of an external power supply, the power adapter 10 cannot be electrically connected with the external power supply between the closed state and the open state, and the user is prevented from electric shock.

In another embodiment, the pins 60 can be telescopically moved relative to the housing 30 to protrude from the first surface 33 or be accommodated in the housing 30. In the open state, the pins 60 fully extend out of the housing 30 so as to be insertable into the aperture of the external power source, allowing the external power source to charge the electronic device through the power adapter 10. Between the closed state and the open state, part of the structure of the plug 60 is accommodated in the housing 30, that is, the plug 60 does not protrude completely from the first surface 33, so that when the plug 60 is inserted into the hole of the external power supply, the plug 60 cannot contact with an electrical connector such as a PIN point in the hole of the external power supply, and the power adapter 10 cannot be electrically connected with the external power supply. It will be appreciated that, between the closed state and the open state, the user needs to grip the third surface 31 and the fourth surface 32 of the housing 30 with fingers, and the distance between the pins 60 and the user's fingers may be less than a predetermined value and not meet the safety requirements, thereby posing a risk of electric shock to the user. By providing the PINs 60 not to protrude completely from the first surface 33 between the closed state and the open state, even if the protruding portions of the PINs 60 are inserted into the holes of the external power supply, the PINs cannot touch the PIN points in the external power supply, thereby preventing the user from having an electric shock hazard.

As shown in fig. 4 and 7, in an embodiment, the number of the pins 60 is 2, 2 pins 60 are arranged in the width direction of the power adapter 10, i.e., the X direction, the distance between each of the 2 pins 60 and the third surface 31 is L1, and the distance between each of the 2 pins 60 and the fourth surface 32 is L2. In the open state of the power adapter 10, the distances between the 2 pins 60 and the sixth surface 120 are all L3, and L3 is equal to the sum of the thickness of the first protective cover 100 and L1; the distance between the 2 pins 60 and the eighth surface 220 is L4, and L4 is equal to the sum of the thickness of the second protective cover 200 and L2. In the open state, the distance between the pin 60 and the edge of the working mating face 90 is the minimum of L3, L4.

The safety specification, i.e., the safety specification, specifies that the distance from the pins 60 to the edge of the working mating surface 90 is not less than a preset value in the open state of the power adapter 10. In some embodiments, the preset value may be 6.5mm, or may be other data, such as 5.1mm or 7.9mm, and is determined according to the usage of the power adapter 10. It can be understood that, in the open state, in the thickness direction of the power adapter 10, i.e., the Z direction, the distance from the pins 60 to the edge of the working mating face 90 is not less than the preset value; and the distance from the pins 60 to the edge of the working mating face 90 in the width direction of the power adapter 10, i.e., the X direction, is not less than a preset value. In one embodiment, L1 is equal to L2, i.e., 2 pins 60 are symmetrically disposed on the first surface 33, and L3 is equal to L4, the minimum value of the edge of the pin 60 from the working mating surface 90 is L3 or L4, and L3 or L4 is not less than a predetermined value. L1 is smaller than a preset value, such as 2.65mm, and L3 is not smaller than a preset value, such as 8.4 mm.

In another embodiment, L1 is not equal to L2, that is, 2 pins 60 are asymmetrically disposed on the first surface 33, for example, 2 pins 60 are close to the third surface 31, then L1 is smaller than L2, then L3 is smaller than L4, then the minimum value of the edge of the pin 60 from the working mating surface 90 is L3, and L3 is not smaller than the preset value; for another example, when 2 pins 60 are close to the fourth surface 32, L1 is greater than L2, L3 is greater than L4, the minimum value of the edge of the pin 60 from the working mating surface 90 is L4, and L4 is not less than the preset value. In this embodiment, both L1 and L2 are less than the preset value, and neither L3 nor L4 are less than the preset value.

In an embodiment, in the open state, there is a height difference between the second surface 140 and the first surface 33 within a set range, such as not greater than 2mm, such as 1 mm. The second surface 140 may be higher than the first surface 33 or lower than the first surface 33. The minimum distance from any one position of the pin 60 to the plane where the sixth surface 120 is located is not less than a preset value, i.e. the minimum distance is the same as the minimum distance without height difference, and is the minimum value of L3 and L4, and the minimum value of L3 and L4 is greater than the preset value. The minimum distance between the pins 60 and the eighth surface 220 is equal to or greater than a predetermined value. In the open position, first protective cap 100 is attached to housing 30, which includes the three conditions explained above, i.e., completely attached to no gap, a gap within 2mm or other size range, and partially attached to a portion of the housing. When the gap exists between the first protective cover 100 and the housing 30, the minimum distance between any one portion of the pin 60 and the plane where the sixth surface 120 is located needs to be greater than a predetermined value. The minimum distance between the pins 60 and the plane of the eighth surface 220 is required to be greater than a predetermined value.

In the closed state of the power adapter 10, the thickness of the power adapter 10 is the sum of the dimensions of the pins 60 in the Z direction and the L1 and L2. Likewise, the thickness of the power adapter 10 is equal to the sum of the thicknesses of the first protective cover 100 and the second protective cover 200. Both L1 and L2 are smaller than the preset values, and when L1 and L2 are smaller, the thickness of the power adapter 10 is smaller. The thin power adapter 10 is beautiful in appearance, scientific in sense, and portable. The power adapter 10 can satisfy the safety requirements in the open state. That is, the power adapter 10 of the present application has a small thickness in the closed state and is easy to carry. The distance from the pins 60 to the edge of the working matching surface 90 is increased by the fitting of the first protective cover 100, the second protective cover 200 and the housing 30 in the open state, so that the power adapter 10 can meet the safety requirement, i.e. the requirement of safety specification.

As shown in fig. 8, in another embodiment, the 2 pins 60 are arranged in the thickness direction of the power adapter 10, i.e., the Z direction, that is, one pin 60 is adjacent to the third surface 31 and the other pin 60 is adjacent to the fourth surface 32. In the open state, the distance from the 2 pins 60 to the edge of the first protective cover 100, i.e., the sixth surface 120, is different, and the distance from the 2 pins 60 to the third surface 31 is different; the 2 pins 60 are located at different distances from the edge of the second protective cover 200, i.e., the eighth surface 220, and the 2 pins 60 are located at different distances from the fourth surface 32. Defining a minimum distance of L5 between the pin 60 and the third surface 31, the distance between the pin 60 and the third surface 31 near the third surface 31 is L5; defining the minimum distance from the pin 60 to the sixth surface 120 in the open state as L7, the distance from the pin 60 near the third surface 31 to the sixth surface 120 is L7; defining the minimum distance from the pin 60 to the fourth surface 32 as L6, the distance between the pin 60 near the fourth surface 32 and the fourth surface 32 is L6; defining the minimum distance from the pin 60 to the eighth surface 220 in the open state as L8, the distance between the pin 60 near the fourth surface 32 and the eighth surface 220 is L8. In this embodiment, the distance from the pin 60 to the edge of the working mating surface 90 is not less than a preset value, i.e. neither L7 nor L8 is less than a preset value; and in the width direction of the power adapter 10, i.e., the X direction, the distance from the pins 60 to the edge of the working mating face 90 is not less than the preset value, i.e., the minimum distance from the pins 60 to the eleventh surface 35 is not less than the preset value, and the minimum distance from the twelfth surface 36 is not less than the preset value. L5 and L6 can be equal or unequal, but L5 and L6 are both smaller than a preset value; l7 and L8 can be equal or unequal, but L7 and L8 are not less than the preset value. In one embodiment, the preset value is 6.5 mm.

In one embodiment, the hinge mechanism 40 can be part of the protective cover 20 or part of the housing 30. For example, the hinge mechanism 40 connected between the first protective cover 100 and the housing 30 is a part of the first protective cover 100, or a part of the housing 30; the hinge mechanism 40 coupled between the second protective cover 200 and the case 30 is part of the second protective cover 200 or is part of the case 30. Of course, the hinge mechanism 40 may be separate from the structure of the protective cover 20 and the housing 30, and may be mechanically or adhesively attached between the protective cover 20 and the housing 30. The present application will be described in detail with reference to the hinge mechanism 40 as an example of a structure independent of the protective cover 20 and the housing 30. The hinge mechanism 40 is suitable for the power adapter 10 of the present application, and can also be suitable for other electronic devices, mechanical devices, packaging fields or household appliances. The present application will explain the hinge mechanism 40 as an example of the power adapter 10.

As shown in fig. 9, 11 and 12, in one embodiment, hinge mechanism 40 includes a base 43, a first movable member 41 and a second movable member 42. The base 43 has a first direction F1, a second direction F2, and a third direction F3 perpendicular to each other, the first direction F1 being a longitudinal direction of the base 43, the second direction F2 being a thickness direction of the base 43, and the third direction F3 being a width direction of the base 43. In a state where the hinge mechanism 40 is attached to the power adapter 10, as shown in fig. 1, in a closed state of the power adapter 10, the first direction F1 is arranged in the Y direction, the second direction F2 is arranged in the Z direction, and the third direction F3 is arranged in the X direction. The outer surface of the hinge mechanism 40 is substantially flush with the third and

fourth surfaces

31, 32, respectively. When the power adapter 10 is switched from the closed state to the open state, the hinge mechanism 40 rotates about the X direction. As shown in fig. 4, in the open state of the power adapter 10, the first direction F1 is disposed in the Z direction, the second direction F2 is disposed in the Y direction, and the third direction F3 is disposed in the X direction.

The first movable member 41 and the second movable member 42 are respectively connected to the base 43 in a rotatable or slidable manner, so that the first movable member 41 and the second movable member 42 can rotate toward or away from each other, and the hinge mechanism 40 has a first state and a second state. The first and second

movable parts

41, 42, which can rotate towards and away from each other, constitute a first set of movable parts. The first movable member 41 and the second movable member 42 have a length direction, and the length of the first movable member 41 and the second movable member 42 is not less than the width thereof. As shown in fig. 9, in the first state, the longitudinal directions of the first movable member 41 and the second movable member 42 are respectively arranged along the first direction F1. As shown in fig. 12, in the second state, the longitudinal directions of the first movable member 41 and the second movable member 42 are respectively arranged along the second direction F2. That is, when the hinge mechanism 40 is in the first state, the first movable member 41 and the second movable member 42 rotate back and forth about the third direction F3 to switch to the second state. In one embodiment, the first and second

movable members

41, 42 rotate through an angle of 90 °, and in another embodiment, the first and second

movable members

41, 42 may rotate through an angle greater than 90 ° or less than 90 °.

It is understood that in the first state, the length direction of the first movable member 41 and the second movable member 42 is arranged along the first direction F1, and in the first state, the distance between the first movable member 41 and the second movable member 42 is smaller; in the second state, the length directions of the first movable member 41 and the second movable member 42 are arranged along the second direction F2, and the width directions of the first movable member 41 and the second movable member 42 are arranged along the first direction F1, so that in the second state, the distance between the first movable member 41 and the second movable member 42 is increased and is greater than the distance between the first movable member 41 and the second movable member 42 in the first state. The first movable member 41 of the first set of movable members is secured to the protective cover 20 and the second movable member 42 of the first set of movable members is secured to the housing 30 in the installed state of the power adapter 10. The first state of the hinge mechanism 40 corresponds to a closed state of the power adapter 10 in which the spacing between the first movable member 41 and the second movable member 42 is small, resulting in a small spacing between the protective cover 20 and the housing 30. The second state of the hinge mechanism 40 corresponds to the open state of the power adapter 10, and in this state, the distance between the first movable member 41 and the second movable member 42 is greater than the distance in the first state, so as to provide a space for stacking the protective cover 20 and the housing 30, and prevent interference between the two to hinder the switching of the protective cover 20 from the closed state to the open state.

In one embodiment, one of the base 43 and the first movable member 41 is provided with a first protrusion 431, and the other is provided with a first guide slot 411. One of the base 43 and the first movable member 41 is provided with a first positioning block 433, and the other is provided with a first positioning groove 412. The first protrusion 431 can slide along the first guide slot 411, and the first positioning block 433 rotates in the first positioning slot 412, so that the first movable element 41 rotates relative to the base 43, and the first movable element 41 is switched between the first state and the second state. One of the base 43 and the second movable member 42 is provided with a second boss 432, and the other is provided with a second guide groove 421. One of the base 43 and the second movable member 42 is provided with a second positioning block 434, and the other is provided with a second positioning slot 422. The second protruding column 432 can slide along the second guiding groove 421, and the second positioning block 434 rotates in the second positioning groove 422, so that the second movable member 42 rotates relative to the base, and the second movable member 42 is switched between the first state and the second state. First movable element 41 is able to rotate towards and away from each other with respect to second movable element 42.

As shown in fig. 9 to 11, the base 43 has a first protrusion 431 and a first positioning block 433, and the first movable member 41 has a first guide slot 411 and a first positioning slot 412. The first protrusion 431 can slide along the first guide slot 411, and the first positioning block 433 rotates in the first positioning slot 412, so that the first movable element 41 rotates relative to the base 43, and the first movable element 41 is switched between the first state and the second state. The base 43 is provided with a second protruding column 432 and a second positioning block 434, and the second movable member 42 is provided with a second guiding slot 421 and a second positioning slot 422. The second protruding column 432 can slide along the second guiding groove 421, and the second positioning block 434 rotates in the second positioning groove 422, so that the second movable member 42 rotates relative to the base 43, and the second movable member 42 is switched between the first state and the second state.

In another embodiment, the first protrusion 431 and the first positioning block 433 are disposed on the first movable member 41, and the first guiding slot 411 and the first positioning slot 412 are disposed on the base 43. The first protrusion 431 can slide along the first guide slot 411, and the first positioning block 433 rotates in the first positioning slot 412, so that the first movable element 41 rotates relative to the base 43, and the first movable element 41 is switched between the first state and the second state. The second protruding pillar 432 and the second positioning block 434 are located on the second movable member 42, and the second guiding slot 421 and the second positioning slot 422 are disposed on the base 43. The second protruding column 432 can slide along the second guiding groove 421, and the second positioning block 434 rotates in the second positioning groove 422, so that the second movable member 42 rotates relative to the base 43, and the second movable member 42 is switched between the first state and the second state.

In another embodiment, the first protrusion 431 is located on the base 43, and the first positioning block 433 is located on the first movable member 41; the first guide slot 411 is opened in the first movable member 41, and the first positioning slot 412 is opened in the base 43. It is also possible to realize that the first movable member 41 can rotate relative to the base 43, thereby switching the first movable member 41 between the first state and the second state. The second protruding column 432 is located on the base 43, and the second positioning block 434 is located on the second movable member 42; the second guide groove 421 is opened on the second movable member 42, and the second positioning groove 422 is opened on the base 43. It is also possible to achieve that the second moveable member 42 can rotate relative to the base 43 to switch the second moveable member 42 between the first and second states.

In another embodiment, the first protrusion 431 is located on the first movable member 41, and the first positioning block 433 is located on the base 43; the first guide slot 411 is opened in the base 43, and the first positioning slot 412 is opened in the first movable member 41. It is also possible to realize that the first movable member 41 can rotate relative to the base 43, thereby switching the first movable member 41 between the first state and the second state. The second protruding column 432 is located on the second movable member 42, and the second positioning block 434 is located on the base 43; the second guide groove 421 is opened on the base 43, and the second positioning groove 422 is opened on the second movable member 42. It is also possible to achieve that the second moveable member 42 can rotate relative to the base 43 to switch the second moveable member 42 between the first and second states.

The present application will be described in detail with an example in which the first protruding pillar 431 and the first positioning block 433 are located on the base 43, and the first guiding slot 411 and the first positioning slot 412 are opened on the first movable element 41; the details will be described by taking an example in which the second protruding pillar 432 and the second positioning block 434 are located on the base 43, and the second guiding groove 421 and the second positioning groove 422 are opened on the second movable member 42.

As shown in fig. 13, when the hinge mechanism 40 is in the first state, the first protrusion 431 is located at an end of the first guide slot 411 away from the second movable member 42, and the second protrusion 432 is located at an end of the second guide slot 421 away from the first movable member 41. The first movable element 41 and the second movable element 42 are respectively switched from the first state to the second state by rotating relative to the base 43 by a set angle. As shown in fig. 15a, in the second state, the first protrusion 431 slides to the other end of the first guide slot 411, and the second protrusion 432 slides to the other end of the second guide slot 421.

In one embodiment, the set angle is 90 °. In another embodiment, the set angle may be less than 90 °, such as 45 ° or 60 °, and the like, or the set angle may be greater than 90 °, such as 120 °, and the like.

As shown in fig. 9 to 11, in an embodiment, two ends of the base 43 are respectively provided with a first protruding pillar 431 and a second protruding pillar 432, the first protruding pillar 431 and the second protruding pillar 432 may be located on the same side of the base 43, or located on two opposite sides of the base 43, and the first protruding pillar 431 and the second protruding pillar 432 are parallel to each other. The first movable member 41 of the first set of movable members is fixed to the protective cover 20, and the first movable member 41 and the base 43 are connected in a sliding or rotating manner through the first boss 431, the second movable member 42 of the first set of movable members is fixed to the housing 30, and the second movable member 42 and the base 43 are connected in a sliding or rotating manner through the second boss 432. As shown in fig. 9 and 12, when the first movable member 41 and the second movable member 42 rotate toward each other, the protective cover 20 can be switched from the closed state to the open state. When the first movable member 41 and the second movable member 42 rotate away from each other, the protective cover 20 can be switched from the open state to the closed state.

As shown in fig. 11 and 13, in an embodiment, the first movable member 41 defines a first guide slot 411, and the second movable member 42 defines a second guide slot 421. The first protruding column 431 is slidably engaged with the first sliding slot 411, so that the first movable member 41 can slide and rotate relative to the base 43, and thus can assume the state shown in fig. 9 and 12. The second protruding column 432 is slidably engaged with the second guiding groove 421, so that the second movable member 42 can interact and rotate relative to the base 43, and thus can assume the state shown in fig. 9 and 12.

As shown in fig. 14, in an embodiment, the cross-sections of the first positioning block 433 and the second positioning block 434 are both elliptical, and the cross-sections of the first protruding pillar 431 and the second protruding pillar 432 are both circular. An included angle β 1 between a central point of the first positioning block 433 and a central point of the first protruding pillar 431 at both ends of the first guide slot 411 is equal to 90 °, which satisfies that the first movable member 41 rotates 90 ° relative to the base 43 in the first state and then switches to the second state. An included angle β 2 between a central point of the second positioning block 434 and a central point of the second protruding pillar 432 at two ends of the second guiding groove 421 is equal to 90 °, which satisfies that the second movable member 42 is switched to the second state after rotating 90 ° relative to the base 43 in the first state.

As shown in fig. 13 and 14, the first guide slot 411 and the second guide slot 421 are both arc-shaped slots. The radian of the first guide slot 411 protrudes toward the first positioning block 433, and the radian of the second guide slot 421 protrudes toward the second positioning block 434. In another embodiment, the first guide slot 411 and the second guide slot 421 can also be straight slots, and it is also possible to rotate the first movable member 41 by 90 ° with respect to the base 43 to switch between the first state and the second state, and to rotate the second movable member 42 by 90 ° with respect to the base 43 to switch between the first state and the second state.

As shown in fig. 13 and 14, in an embodiment, the first guide groove 411 and the second guide groove 421 are circular arc grooves, that is, on the plane where F1 and F2 are located, the first guide groove 411 and the second guide groove 421 extend along a circular arc track, and the central angle of the first guide groove 411 and the second guide groove 421 is smaller than 90 °, so that the first movable member 41 and the second movable member 42 can rotate 90 ° relative to the base 43, and thus can be switched between the first state and the second state. It can be understood that when the first movable member 41 rotates relative to the base 43, the first positioning block 433 rotates and slides relative to the first positioning slot 412, and the sliding of the first positioning block 433 relative to the first positioning slot 412 enables the first movable member 41 to rotate 90 ° relative to the base 43 when the central angle subtended by the first guide slot 411 is smaller than 90 °. Similarly, the central angle subtended by the second guide slot 421 is less than 90 °, the sliding of the second stud 432 along the second guide slot 421, and the rotation and sliding of the second positioning block 434 relative to the second positioning slot 422 enable the second movable member 42 to rotate 90 ° relative to the base 43 to switch between the first state and the second state.

Between the first state and the second state, the arcs of the first guide groove 411 and the second guide groove 421 are projected toward each other, forming a structure as shown in fig. 14. Between the first state and the second state, the centers of circles of the first guide slot 411 and the second guide slot 421 are located on the sides of the first guide slot 411 and the second guide slot 421, which are away from each other. That is, the center of the circle subtended by the first guide slot 411 is located on the side of the first guide slot 411 departing from the second guide slot 421, and the center of the circle subtended by the second guide slot 421 is located on the side of the second guide slot 421 departing from the first guide slot 411. It is understood that the first guide slot 411 and the second guide slot 421 may also protrude oppositely, and the corresponding central angles of the first guide slot 411 and the second guide slot 421 may be both 90 °, and the first guide slot 411 and the second guide slot 421 together can form a semicircular structure.

As shown in fig. 14 and 15b, the base 43 includes a first side 438 and a second side 439 located at two ends of the second direction F2 and opposite to each other. In the first state, first movable member 41 and second movable member 42 project beyond first side 438; in the second state, the first and second

movable members

41, 42 have one end protruding from the second side 439 and the other end flush with the first side 438. First post 431 and second post 432 are proximate first side 438. The distance between first positioning block 433 and first side 438 is greater than the distance between first post 431 and first side 438. The distance between the second positioning block 434 and the first side 438 is greater than the distance between the second post 432 and the first side 438. First positioning block 433 and second positioning block 434 are located approximately midway between first side 438 and second side 439. This arrangement allows the first and second

moveable members

41, 42 to be flush with the first side 438 when the hinge mechanism 40 is in the second state, so that there is no roughness in the exposed surface of the hinge mechanism 40 when the power adapter 10 is in the open state.

When the first movable element 41 rotates relative to the base 43, the first movable element 41 may slide while rotating relative to the first positioning block 433. That is, when the first positioning groove 412 rotates around the first positioning block 433, the first positioning block 433 also slides along the first positioning groove 412, so that the first movable element 41 rotates and slides relative to the base 43, thereby enabling the first movable element 41 to switch between the first state and the second state. Similarly, when the second movable member 42 rotates relative to the base 43, the second positioning block 434 rotates and slides relative to the second positioning slot 422.

As shown in fig. 13 and 14, in an embodiment, the first positioning groove 412 is obliquely opened at a side of the first movable member 41 facing the base 43, and one end of the first positioning groove 412 is communicated with the first guide groove 411 and the other end extends to an edge of the first movable member 41, so that the first movable member 41 can be easily mounted on and dismounted from the base 43. And the first positioning groove 412 reserves a sufficient sliding space for the first positioning block 433. The second positioning groove 422 is obliquely arranged on one side of the second movable member 42 facing the base 43, one end of the second positioning groove 422 is communicated with the second guide groove 421, and the other end of the second positioning groove 422 extends to the edge of the second movable member 42, so that the second movable member 42 can be conveniently installed on the base 43 and detached from the base 43. And the second positioning slot 422 reserves enough sliding space for the second positioning block 434.

It can be understood that the arcs of the first guide groove 411 and the second guide groove 421 are protruded toward each other to form the structure as shown in fig. 14. This arrangement is combined with the feature that the first positioning block 433 and the second positioning block 434 can slide in the first positioning groove 412 and the second positioning groove 422, respectively, so that when the hinge mechanism 40 is switched from the first state to the second state, the first movable member 41 first has an action of moving away from the second movable member 42, and the distance between the first movable member 41 and the second movable member 42 is increased. After the hinge mechanism 40 is assembled on the power adapter 10, when the power adapter 10 is switched from the closed state to the open state, the protection cover 20 firstly has an action of being away from the housing 30, so that the distance between the protection cover 20 and the housing 30 is increased, and interference generated during rotation between the protection cover 20 and the housing 30 is avoided, so that a chamfer can be avoided from being arranged at one end of the protection cover 20 and the housing 30, which are close to each other, that is, the intersection of the fifth surface 110 and the second surface 140 is a right angle, and the intersection of the third surface 31 and the first surface 33 is a right angle. Therefore, when the power adapter 10 is in the closed state, as shown in fig. 1, the distance between the protective cover 20 and the casing 30 is small, so that the power adapter 10 has a complete appearance structure and good appearance integrity.

In one embodiment, the cross-sections of the first positioning block 433 and the second positioning block 434 are both elliptical structures. As shown in fig. 13 and 14, in the first state, the long axis of the cross section of the first positioning block 433 is perpendicular to the groove wall of the first positioning groove 412, and the minimum distance between the first positioning block 433 and the groove wall of the first positioning groove 412 is S1; the long axis of the cross section of the second positioning block 434 is perpendicular to the groove wall of the second positioning groove 422, and the minimum distance between the second positioning block 434 and the groove wall of the second positioning groove 422 is also S1. As shown in fig. 15a and 15b, in the second state, the minor axis of the cross section of the first positioning block 433 is perpendicular to the groove wall of the first positioning groove 412, and the minimum distance between the first positioning block 433 and the groove wall of the first positioning groove 412 is S2; the minor axis of the cross section of the second positioning block 434 is perpendicular to the groove wall of the second positioning groove 422, and the minimum distance between the second positioning block 434 and the groove wall of the second positioning groove 422 is also S2. Then S2 is greater than S1. It is understood that, between the first state and the second state, the minimum distance between the first positioning block 433 and the wall of the first positioning groove 412 is greater than S1 and less than S2; the minimum distance between the second positioning block 434 and the groove wall of the second positioning groove 422 is greater than S1 and less than S2. In the process of switching the hinge mechanism 40 from the first state to the second state, the minimum distance between the first positioning block 433 and the groove wall of the first positioning groove 412 gradually increases, and the minimum distance between the second positioning block 434 and the groove wall of the second positioning groove 422 gradually increases synchronously.

The first state of the hinge mechanism 40 corresponds to the closed state of the power adapter 10, and the minimum distance S1 between the first positioning block 433 and the wall of the first positioning groove 412 is smaller or even close to 0, so that the assembly between the two is more compact, and the stability of the power adapter 10 in the closed state is increased. The second state of the hinge mechanism 40 corresponds to the open state of the power adapter 10, and the minimum distance S2 between the first positioning block 433 and the wall of the first positioning groove 412 is greater than S1, so that there is a clearance between the two, which facilitates the user to close the power adapter 10, and facilitates the first positioning block 433 to slide in the first positioning groove 412.

In another embodiment, the cross-section of the first positioning block 433 and the second positioning block 434 may be non-elliptical, but the major axis and the minor axis are required to satisfy that S1 is smaller than S2. The cross-section of the first positioning block 433 and the second positioning block 434 may be a runway-type structure, an irregular circular structure or other structures, which are not limited herein.

As shown in fig. 9 and 11, in one embodiment, the number of first movable members 41 is 2 and the number of second movable members 42 is 2. The first movable member 41 and the second movable member 42 have different structures, the first movable member 41 has a plate-shaped structure, and the second movable member 42 has an L-shaped structure. The 2 first moving members 41 are respectively located on two sides of the third direction F3 of the base 43, and the 2 first moving members 41 are diagonally disposed. The 2 second movable members 42 are respectively located on two sides of the base 43 in the third direction F3, and the 2 second movable members 42 are diagonally disposed. That is, on both sides of the third direction F3 of the base 43, the first movable member 41 is covered and fixed on the second movable member 42, and both rotate and slide synchronously. First

movable member

2, 41 and second

movable member

2, 42 are assembled to form receptacle 437, with at least a portion of base 43 being located within receptacle 437.

The first moving member 41 and the second moving member 42 on one side of the third direction F3 of the base 43 constitute a first set of moving members, and the first moving member 41 and the second moving member 42 on the other side of the third direction F3 of the base 43 constitute a second set of moving members. The first set of movable members comprises a first movable member 41 and a second movable member 42 which are able to rotate towards and away from each other with respect to a base 43 to switch between a first state and a second state. The second set of movable members comprises a first movable member 41 and a second movable member 42 which are able to rotate towards and away from each other with respect to a base 43 to switch between a first state and a second state. The first movable member 41 in the first set of movable members and the second movable member 42 in the second set of movable members are fixed together and rotate synchronously, and the second movable member 42 in the second set of movable members and the first movable member 41 in the second set of movable members are fixed together and rotate synchronously.

In another embodiment, the first movable member 41 and the second movable member 42 are identical in structure and are both L-shaped. It can be understood that 2 first movable members 41 are respectively disposed on two sides of the base 43 in the third direction F3, the first movable members 41 on two sides of the base 43 in the third direction F3 are fixed in pairs to form a receiving cavity 437, and at least a part of the structure of the base 43 is located in the receiving cavity 437.

In one embodiment, the hinge mechanism 40 is made of PA plastic (Polyamide) and 60% GF (Glass Fiber). The elastic modulus of the material is up to 23GPa, which is about 10 times that of the common plastic material; the yield strength is up to 235Mpa, which is 5 times of that of common materials. The hinge mechanism 40 is prepared from PA + 60% GF, so that the strength and rigidity of the hinge mechanism 40 are greatly improved, the reliability of the hinge mechanism 40 is improved, and the service life of the hinge mechanism 40 is prolonged.

The hinge mechanism 40 is simple in structure, and comprises 5 parts including the base 43, the 2 first movable parts 41 and the 2 second movable parts 42, and compared with the existing hinge mechanism with at least 10 parts, the hinge mechanism 40 is simple in structure, can control reliability and tolerance better, and saves materials, molds and assembly cost.

In one embodiment, the cooperative state of the hinge mechanism 40 during the process of switching the power adapter 10 from the closed state to the open state is described by taking the first set of moving parts as an example and taking the rotation of the first protection cover 100 as an example.

As shown in fig. 16, the first movable member 41 is secured to the first protective cover 100 and the second movable member 42 is secured to the housing 30. The first state of the hinge mechanism 40 corresponds to the closed state of the power adapter 10, and the second state corresponds to the open state of the power adapter 10. Fig. 16(b) is a process diagram of switching the first protective cap 100 from the closed state to the open state, and fig. 16(a) is a process diagram of switching the hinge mechanism 40 from the first state to the second state. In the closed state, along with the rotation of the first protection cover 100, the first movable member 41 and the base 43 rotate relative to the second movable member 42, so that the first protruding column 431 and the second protruding column 432 respectively slide from one end of the first guide groove 411 to the other end of the second guide groove 421, and the first positioning block 433 and the second positioning block 434 respectively rotate and slide in the first positioning groove 412 and the second positioning groove 422. Until the first protection cover 100 rotates 180 degrees from the closed state to the open state, the hinge mechanism 40 is located in the second state, in the process, the second movable element 42 remains stationary, the base 43 rotates 90 degrees from the first state, the first movable element 41 rotates 180 degrees from the first state, and the first convex column 431 and the second convex column 432 slide to the other ends of the first guide groove 411 and the second guide groove 421 respectively.

As shown in fig. 17, the hinge mechanism 40 is in the first state, and the power adapter 10 is in the closed state. By rotating the first protection cover 100 by about 45 °, the power adapter 10 assumes a state shown in fig. 18 and 19, and in this state, the hinge mechanism 40 assumes a state shown in fig. 20 to 23. Since the second movable member 42 is fixed to the housing 30, when the power adapter 10 is switched from the closed state to the open state, the second movable member 42 is always in the stationary state, and the switching of the hinge mechanism 40 from the first state to the second state is completed by the rotation of the base 43 and the first movable member 41. As shown in fig. 20 to 23, the base 43 is inclined relative to the first movable member 42, the second protruding pillar 432 slides from one end of the second guiding groove 421 to the other end, the second positioning groove 422 rotates relative to the second positioning block 434, the long axis of the cross section of the second positioning block 434 is not perpendicular to the groove wall of the second positioning groove 422, and the distance between the second positioning block 434 and the groove wall of the second positioning groove 422 increases. The first movable member 41 is inclined relative to the base 43, the first protrusion 431 slides from one end of the first guide slot 411 to the other end, and simultaneously the first positioning slot 412 rotates relative to the first positioning block 433, and the distance between the first positioning block 431 and the slot wall of the first positioning slot 412 increases.

As shown in FIG. 24, the first cap 100 is rotated about 120 from the closed position. In this state, the hinge mechanism 40 assumes the state shown in fig. 25 to 27, and compared with the state of the hinge mechanism 40 shown in fig. 20 to 23, the base 43 is further inclined with respect to the second movable member 42, and the second boss 432 is closer to the other end of the second guide groove 421, while the distance between the second positioning block 434 and the groove wall of the second positioning groove 422 is further increased due to the further rotation of the second positioning groove 422 with respect to the second positioning block 434. Similarly, the first protrusion 431 is closer to the other end of the first guiding slot 411, and meanwhile, due to the further rotation of the first positioning slot 412 relative to the first positioning block 433, the distance between the first positioning block 433 and the slot wall of the first positioning slot 412 is further increased.

As shown in fig. 28 to 30, the first protective cap 100 is rotated 180 ° from the closed state to be in the open state. In this state, the hinge mechanism 40 assumes the state shown in fig. 15a and 15 b. As compared with the state shown in fig. 25 to 27, the base 43 further rotates until the second stud 432 is located at the other end of the second guide groove 421, the short axis of the cross section of the second positioning block 434 is perpendicular to the groove wall of the second positioning groove 422, and the distance between the second positioning block 434 and the groove wall of the second positioning groove 422 reaches the maximum, which is S2. Similarly, the first protruding pillar 431 is located at the other end of the first guiding groove 411, meanwhile, the short axis of the cross section of the first positioning block 433 is perpendicular to the groove wall of the first positioning groove 412, and the distance between the first positioning block 433 and the groove wall of the first positioning groove 422 reaches the maximum, which is S2. When the first protective cover 100 is in the open state, the second movable member 42 remains unchanged from the closed state to the open state, the base 43 is changed from the Y-direction arrangement to the Z-direction arrangement, and the first movable member 41 rotates 90 ° relative to the base 43 upon rotation of the base 43. The first convex pillar 431 and the second convex pillar 432 respectively slide from one end of the first guide slot 411 to the other end of the second guide slot 421. The first positioning block 433 and the second positioning block 434 are respectively perpendicular to the groove walls of the first positioning groove 412 and the second positioning groove 422 from the long axis to the short axis, so that the distance between the first positioning block 433 and the second positioning block 434 and the groove walls of the first positioning groove 412 and the second positioning groove 422 is increased from S1 to S2.

As shown in FIG. 31, in the state where both the first protective cover 100 and the second protective cover 200 are rotated by 180 degrees from the closed state, the hinge mechanism 40 connected between the first protective cover 100 and the casing 30, and the hinge mechanism 40 connected between the second protective cover 200 and the casing 30 are in the second state.

In another embodiment, as shown in figures 32-34, first and second

moveable members

41, 42 are assembled together to form a receptacle 437, with at least a portion of base 43 being located within receptacle 437. The length directions of first movable member 41 and second movable member 42 are both aligned along first direction F1. First hinge 41 includes a first portion 415 and a third portion 416 disposed along a first direction F1. The first part 415 has a U-shaped configuration, and the first part 415 wraps around opposite sides of the base 43 in the third direction F3. The third part 416 covers the first part 415. Second movable member 42 includes a second member 425 and another third member 416 disposed along first direction F1. The second member 425 has a U-shaped configuration, and the second member 425 wraps around opposite sides of the base 43 in the third direction F3. The other third part 416 covers the second part 425. The two third members 416 are respectively located at both ends of the first member 415 and the second member 425 which are away from each other in the first direction F1.

As shown in fig. 34 to 36, one end of the first guide slot 411 is opened on the third member 416, the rest is opened on the first member 415, and the first member 415 and the third member 416 are assembled to form the complete first guide slot 411. The first positioning grooves 412 are formed on two opposite sides of the first part 415 facing the base 43. One end of the second guiding slot 411 is opened on the other third part 416, the rest part is opened on the second part 425, and the second part 425 and the other third part 416 are assembled to form a complete second guiding slot 421. The second positioning groove 422 is disposed on both sides of the second component 416 facing the base 43.

As shown in fig. 37, when the hinge mechanism 40 is in the second state, one end in the second direction F2 is in a flat state, and a boundary line between the first part 415 and the third part 416 is not present on the flat surface, and a boundary line between the second part 425 and the other third part 416 is also not present on the flat surface. When the hinge mechanism 40 is assembled to the power adapter 10 and the power adapter 10 is in the open state, as shown in fig. 38 and 39, the first movable member 41 and the second movable member 42 are exposed as a plane without a boundary. Whereas in the embodiment shown in fig. 40, there are several boundaries of the hinge mechanism 40. The hinge mechanism 40 of the embodiment shown in fig. 39 is optimized in structure of the hinge mechanism 40 of the embodiment shown in fig. 40.

As shown in fig. 5 and 41, in an embodiment, a first magnetic body 125 is disposed in the first protective cover 100, and a second magnetic body 225 is disposed in the second protective cover 200. There is a magnetic force of mutual attraction between the first magnetic body 125 and the second magnetic body 225, so that there is a magnetic force of mutual attraction between the first protective cover 100 and the second protective cover 200. In the first state, the polarities of the two adjacent poles of the first magnetic element 125 and the second magnetic element 225 are opposite, and for example, when the side of the first magnetic element 125 adjacent to the second magnetic element 225 is an N pole, the side of the second magnetic element 225 adjacent to the first magnetic element 125 is an S pole. The first protective cover 100 and the second protective cover 200 are magnetically attracted and attached to each other by the magnetic force between the first magnetic body 125 and the second magnetic body 225. In the second state, the polarities of the two adjacent poles of the first magnetic body 125 and the second magnetic body 225 are opposite, and the first protective cover 100 and the second protective cover 200 are magnetically attracted and respectively attached to the two opposite sides of the housing 30 through the magnetic force attracted between the first magnetic body 125 and the second magnetic body 225. In one embodiment, the first magnetic body 125 and the second magnetic body 225 are both magnets.

In another embodiment, the first magnetic element 125 may be located on the fifth surface 110 of the first protective cover 100, and the second magnetic element 225 may be located on the seventh surface 210 of the second protective cover 200, which also enables the first protective cover 100 and the second protective cover 200 to have attractive magnetic force.

As shown in fig. 1 and 2, in the first state of the power adapter 10, the first protective cover 100 and the second protective cover 200 are magnetically fixed by the first magnetic body 125 and the second magnetic body 225, and the magnetic force of the first magnetic body 125 and the second magnetic body 225 passes through the sixth surface 120 and the eighth surface 220. When a user places the plug pins 60 in a pocket or a trunk, the first protective cover 100 and the second protective cover 200 hide the plug pins 60 to prevent the plug pins 60 from scratching surrounding objects, and the first protective cover 100 and the second protective cover 200 are not easily opened, so that the power adapter 10 can reliably hide the plug pins 60 during storage or transportation.

As shown in fig. 2, 6 and 7, in an embodiment, the magnetic forces of the mutual attraction between the first and second

magnetic bodies

125 and 225 include a first magnetic force F1 and a second magnetic force F2. The first magnetic force F1 is a magnetic attraction force generated by the opposite polarities of the first magnetic body 125 on the side facing the sixth surface 120 and the second magnetic body 225 on the side facing the eighth surface 220, and the first magnetic force F1 passes through the sixth surface 120 and the eighth surface 220, so that the first protective cover 100 and the second protective cover 200 have a tendency to rotate to the closed state; the second magnetic force F2 is a magnetic attraction force generated by the opposite polarities on the side of the first magnetic body 125 facing the fifth surface 110 and the side of the second magnetic body 225 facing the seventh surface 210, and the second magnetic force F2 passes through the fifth surface 110, the seventh surface 210 and the housing 30, so that the first protective cover 100 and the second protective cover 200 have a tendency to rotate to the open state.

As shown in fig. 2 and 41, in the closed state of the power adapter 10, the first protective cover 100 and the second protective cover 200 are tightly attracted and do not open by the first magnetic force F1 between the first magnetic body 125 and the second magnetic body 225. When it is necessary to open the first protection cover 100 and the second protection cover 200, the user applies a force to the first protection cover 100 or the second protection cover 200 to overcome the first magnetic force F1 between the first magnetic body 125 and the second magnetic body 225, so that the first protection cover 100 or the second protection cover 200 can rotate relative to the housing 30. As shown in fig. 6 and 42, there exists a critical angle α, which is an angle between the first protective cover 100 or the second protective cover 200 and the housing 30, i.e., an angle between the fifth surface 110 and a plane in which the third surface 31 is located, or an angle between the seventh surface 210 and a plane in which the fourth surface 32 is located. When one of the first protective cover 100 and the second protective cover 200 is in the closed state or the open state and the angle between the other of the first protective cover 100 and the second protective cover 200 and the housing 30 is the critical angle α, the first magnetic force F1 and the second magnetic force F2 are in the equilibrium state, that is, the first magnetic force F1 and the second magnetic force F2 interact with each other to make the first protective cover 100 and the second protective cover 200 in the equilibrium state. When one of the first protective cover 100 and the second protective cover 200 is in the open state and the angle between the other of the first protective cover 100 and the second protective cover 200 and the housing 30 is greater than the critical angle α, the first magnetic force F1 is greater than the second magnetic force F2, and the first protective cover 100 and the second protective cover 200 can automatically return to the closed state. When one of the first protective cover 100 and the second protective cover 200 is in the closed state and the angle between the other of the first protective cover 100 and the second protective cover 200 and the housing 30 is smaller than the critical angle α, the first magnetic force F1 is smaller than the second magnetic force F2, and the first protective cover 100 and the second protective cover 200 can automatically return to the open state.

As shown in FIGS. 41-43, assume that a user applies a force to the first cap 100, the first cap 100 rotates, and the second cap 200 remains stationary. At this time, the first magnetic force F1 is greater than the second magnetic force F2, such that the first protective cover 100 and the second protective cover 200 have a tendency to return to the closed state. When the first protective cover 100 is rotated from the closed state and the angle between the first protective cover 100 and the housing 30 is not reached to the critical angle α, the first magnetic force F1 is gradually weakened, the second magnetic force F2 is gradually strengthened, and the first magnetic force F1 is greater than the second magnetic force F2, so that the first protective cover 100 and the second protective cover 200 have a tendency to return to the closed state. When the first protective cover 100 rotates to an angle with the housing 30, which is the critical angle α, the first magnetic force F1 and the second magnetic force F2 are in a balanced state, so that the first protective cover 100 and the second protective cover 200 can be in a balanced state, and ideally, the first protective cover 100 and the second protective cover 200 can remain stationary in the balanced state. As the user continues to apply force, the first magnetic force F1 continues to decrease, the second magnetic force F2 continues to increase, but the first magnetic force F1 is always less than the second magnetic force F2, the user may stop applying force to the first protective cover 100, and the second magnetic force F2 causes the first protective cover 100 and the second protective cover 200 to automatically rotate relative to the housing 30 until the first protective cover 100 and the second protective cover 200 are attached to the housing 30. When the power adapter 10 is in the open state and a user uses the power adapter 10 to supply power to an electronic component, the first protective cover 100 and the second protective cover 200 are fixedly attached to the housing 30 and do not shake or rotate, which is convenient for use. It is understood that when the power adapter 10 needs to be opened, the user can also choose to apply a force to the second protection cover 200, and the power adapter 10 can be opened as well, and the operation principle is the same as the manner in which the user applies a force to the first protection cover 100.

In one embodiment, when the power adapter 10 is in the open state, the first protective cover 100 and the second protective cover 200 are tightly attracted and do not open by the second magnetic force F2 between the first magnetic body 125 and the second magnetic body 225. When it is desired to close the power adapter 10, the user applies a force to the first protection cover 100 or the second protection cover 200 to overcome the second magnetic force F2 between the first magnetic body 125 and the second magnetic body 225, so that the first protection cover 100 or the second protection cover 200 can rotate relative to the housing 30. Assume that the user applies a force to the first protective cap 100, the first protective cap 100 is separated from the housing 30 and rotated, and the second protective cap 200 is kept in a state of being attached to the housing 30. As the first protective cover 100 rotates, the second magnetic force F2 weakens, the first magnetic force F1 gradually increases, but the second magnetic force F2 is always greater than the first magnetic force F1. When the first protective cover 100 rotates to the critical angle α with the housing 30, the first magnetic force F1 and the second magnetic force F2 are in a balanced state, that is, the first protective cover 100 and the second protective cover 200 are in a balanced state under the combined action of the first magnetic force F1 and the second magnetic force F2, and ideally, the first protective cover 100 and the second protective cover 200 can be in a static state. As the user continues to apply force to the first protective cover 100, the equilibrium between the first and second magnetic forces F1 and F2 is broken such that the first magnetic force F1 is greater than the second magnetic force F2, and the user may stop applying force to the first protective cover 100. The first magnetic force F1 can cause the first protective cover 100 and the second protective cover 200 to automatically rotate relative to the housing 30 until the first protective cover 100 and the second protective cover 200 are attached to each other, so that the power adapter 10 is in the closed state. In the closed state of the power adapter 10, during the storage or transportation or daily placement and movement, the first protective cover 100 and the second protective cover 200 are tightly fixed, and have the reliability of hiding the plug pins 60, and the thickness is thin, so that the power adapter is convenient to carry. It is understood that when the power adapter 10 needs to be closed, the user can also choose to apply force to the second protection cover 200, and the power adapter 10 can be closed similarly, and the operation principle is the same as the way that the user applies force to the first protection cover 100.

In one embodiment, part or all of the structure of the first protective cap 100 is made of a magnetic material, and part or all of the structure of the second protective cap 200 is made of a magnetic material, such that there is an attractive magnetic force between the first protective cap 100 and the second protective cap 200. Thereby, the automatic opening and the automatic closing between the first protection cover 100 and the second protection cover 200 can be realized, and the principle is the same, which is not described herein again.

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:

in the closed state, the protective cover or the housing protects the pins;

2. The power adapter as claimed in claim 1, wherein in the open state, the distance of the pin from the edge of the working mating face is not less than a preset value.

3. The power adapter as claimed in claim 2, wherein the pins can protrude from the first surface, and the distance between the pins and the edge of the first surface in the thickness direction of the power adapter is smaller than the preset value.

4. The power adapter as claimed in any one of claims 1 to 3, wherein the thickness of the protective cover is consistent with the dimension of the first surface in the thickness direction of the power adapter.

5. The power adapter as claimed in claim 2, wherein the preset value is 5.1mm or 6.5mm or 7.9 mm.

6. The power adapter as claimed in claim 2, wherein in the open state, the length direction of the pins is perpendicular to the first surface;

between the closed state and the open state, an included angle between the length direction of the pin and the first surface is an acute angle.

7. The power adapter as claimed in claim 2, wherein in the open state, the width direction of the pins is perpendicular to the plane in which the length direction and the width direction of the power adapter are located;

between the closed state and the open state, an included angle between the width direction of the plug pin and a plane where the length direction and the width direction of the power adapter are located is an acute angle.

8. The power adapter as claimed in claim 2, wherein a portion of the pin is configured to be received in the housing between the closed state and the open state.

9. The power adapter as recited in claim 2, including a hinge mechanism connecting the protective cover and the housing such that the protective cover is switchable between the closed state and the open state.

10. The power adapter as described in claim 9, wherein said hinge mechanism comprises:

a base;

one of the first moving piece and the base is provided with a first convex column, and the other one of the first moving piece and the base is provided with a first guide groove; one of the first movable piece and the base is provided with a first positioning block, and the other one of the first movable piece and the base is provided with a first positioning groove; the first convex column can slide along the first guide groove, and the first positioning block rotates in the first positioning groove, so that the first movable piece rotates relative to the base; and

one of the second movable piece and the base is provided with a second convex column, and the other one of the second movable piece and the base is provided with a second guide groove; one of the second movable piece and the base is provided with a second positioning block, and the other one of the second movable piece and the base is provided with a second positioning groove; the second convex column can slide along the second guide groove, and the second positioning block rotates in the second positioning groove, so that the second movable piece rotates relative to the base;

wherein, the first movable part can rotate towards each other or back to back relative to the second movable part.

11. The power adapter as claimed in claim 10, wherein in the closed state, the first protrusion is located at an end of the first guide slot away from the second movable member, and the second protrusion is located at an end of the second guide slot away from the first movable member;

when the first guide groove is in the open state, the first convex column is positioned at the other end of the first guide groove, and the second convex column is positioned at the other end of the second guide groove;

in the closed state, the first movable piece and the second movable piece can rotate oppositely relative to the base by a set angle to be switched to the open state.

12. The power adapter as claimed in claim 11, wherein the set angle is 90 °.

13. The power adapter as described in claim 11, wherein said first and second posts are parallel to each other and both located on said base; the first guide groove and the second guide groove are arc-shaped grooves and are respectively arranged on the first moving part and the second moving part.

14. The power adapter as claimed in claim 13, wherein the first and second guide grooves are circular arc grooves, and the central angle subtended by the first and second guide grooves is less than 90 °.

15. The power adapter as claimed in claim 14, wherein between the open state and the closed state, the centers of the circles subtended by the first guide groove and the second guide groove are located on sides of the first guide groove and the second guide groove which face away from each other, respectively.

16. The power adapter as claimed in any one of claims 10 to 15, wherein the first positioning block has a major axis and a minor axis, and the second positioning block has a major axis and a minor axis;

in the process that the hinge mechanism is switched from the closed state to the open state, the minimum distance between the first positioning block and the groove wall of the first positioning groove is gradually increased, and the minimum distance between the second positioning block and the groove wall of the second positioning groove is gradually increased.

17. The power adapter as claimed in any one of claims 10 to 15, wherein the cross sections of the first positioning block and the second positioning block are both elliptical;

when the positioning device is in the closed state, the long axis of the cross section of the first positioning block is perpendicular to the groove wall of the first positioning groove, and the long axis of the cross section of the second positioning block is perpendicular to the groove wall of the second positioning groove;

when the positioning block is in the opening state, the short axis of the cross section of the first positioning block is perpendicular to the groove wall of the first positioning groove, and the short axis of the cross section of the second positioning block is perpendicular to the groove wall of the second positioning groove.

18. The power adapter as claimed in any one of claims 10 to 15, wherein the first positioning block and the second positioning block are located on the base and extend along a width direction of the base; the first positioning groove and the second positioning groove are respectively arranged on the first moving part and the second moving part.

19. The power adapter as claimed in claim 18, wherein one end of the first positioning groove communicates with the first guide groove, and the other end extends to an edge of the first movable member; one end of the second positioning groove is communicated with the second guide groove, and the other end of the second positioning groove extends to the edge of the second movable piece.

20. The power adapter as claimed in claim 18, wherein the base includes first and second sides that are oppositely disposed in a thickness direction of the base;

when the movable piece is in the closed state, the first movable piece and the second movable piece protrude out of the first side;

when the movable piece is in the opening state, the first movable piece and the second movable piece protrude out of the second side.

21. The power adapter as claimed in claim 20, wherein the first and second posts are adjacent to the first side, the distance between the first positioning block and the first side is greater than the distance between the first post and the first side, and the distance between the second positioning block and the first side is greater than the distance between the second post and the first side.

22. The power adapter as claimed in claim 18, wherein the number of the first movable members is 2, the number of the second movable members is 2, 2 of the first movable members and 2 of the second movable members are assembled to form a receiving cavity, and at least part of the structure of the base is located in the receiving cavity.

23. The power adapter as claimed in claim 22, wherein 2 of the first movable members are located on both sides of the base in the width direction, and 2 of the second movable members are located on both sides of the base in the width direction.

24. The power adapter as described in claim 23, wherein 2 of said first movable members are diagonally disposed and 2 of said second movable members are diagonally disposed; the first movable piece is of a plate-shaped structure, and the first movable piece cover is arranged on the second movable piece on the other side of the base.

25. The power adapter as recited in claim 18 wherein the first and second moveable members form a receiving cavity, at least a portion of the structure of the base being located within the receiving cavity.

26. The power adapter as described in claim 25, wherein said first movable member comprises a first member and a third member, said third member covering said first member; one part of the first guide groove is arranged on the third component, and the other part of the first guide groove is arranged on the first component;

the second movable piece comprises a second part and another third part, and the second part is covered by the other third part; and one part of the second guide groove is arranged on the other third part, and the rest part of the second guide groove is arranged on the second part.

27. The power adapter as claimed in claim 26, wherein the first member wraps around two sides of the base that are opposite in width direction; the second component wraps two sides of the base, which are arranged in the width direction in a back-to-back mode.

28. The power adapter as claimed in any one of claims 10 to 15, wherein the protective cover defines a first receiving slot, the housing defines a second receiving slot, the first movable member is fixed in the first receiving slot, and the second movable member is fixed in the second receiving slot.

29. The power adapter as claimed in any one of claims 10 to 15, wherein the protective cover comprises a first protective cover and a second protective cover;

in the closed state, the first protective cover is attached to the second protective cover;

under the open mode, first visor with the second visor closes respectively in the both sides that back of the body backed on the back of the body.

30. The power adapter as claimed in claim 29, wherein the housing comprises third and fourth oppositely disposed surfaces, the first surface being connected between the third and fourth surfaces; the first protective cover comprises a fifth surface and a sixth surface which are arranged oppositely, and the second surface is connected between the fifth surface and the sixth surface; the second protective cover comprises a seventh surface, an eighth surface and a ninth surface, wherein the seventh surface and the eighth surface are arranged oppositely, and the ninth surface is connected between the seventh surface and the eighth surface;

in the closed state, the sixth surface and the eighth surface are attached, the fifth surface and the third surface are flush, and the seventh surface and the fourth surface are flush;

in the open state, the fifth surface is attached to the third surface, the seventh surface is attached to the fourth surface, and the second surface, the first surface, and the ninth surface together form the working mating surface.

31. The power adapter as claimed in claim 30, wherein the number of the pins is 2, the distance between 2 of the pins and the third surface is L1, and the distance between 2 of the pins and the fourth surface is L2;

the L1 is equal to the L2, the L1 is less than the preset value.

32. The power adapter as claimed in claim 30, wherein in the open state, the distance between 2 of the pins and the sixth surface is all L3, and the distance between 2 of the pins and the eighth surface is all L4;

the L3 is equal to the L4, the L3 is not less than the preset value.

33. The power adapter as claimed in claim 29, wherein a first magnetic body is disposed in the first protective cover, and a second magnetic body is disposed in the second protective cover;

in the closed state, the polarities of the two adjacent poles of the first magnetic body and the second magnetic body are opposite, and the first protective cover and the second protective cover are magnetically attracted, attached and fixed through the first magnetic body and the second magnetic body;

under the open mode, first magnetic substance with the two poles of the earth polarity that the second magnetic substance is close to is opposite, first protective cover with the second protective cover passes through first magnetic substance with second magnetic substance magnetism is inhaled and is laminated respectively and be fixed in the both sides that carry on the back mutually of casing.

34. The power adapter as claimed in claim 29, wherein a first magnetic body is disposed in the first protective cover, and a second magnetic body is disposed in the second protective cover;

when the second protective cover is in the open state and the angle between the first protective cover and the shell is larger than a critical angle, the first magnetic body and the second magnetic body can attract each other so that the first protective cover and the second protective cover rotate to the closed state;

the second visor is located the closed condition, first protective cover with when the angle between the casing is less than critical angle, first magnetic substance with the second magnetic substance can the actuation mutually so that first protective cover with the second visor rotates to the open mode.

35. The power adapter as claimed in claim 29, wherein the first protective cover defines a first slot and the second protective cover defines a second slot;

in the closed state, the first card slot is communicated with the second card slot, and at least part of the pin is accommodated in the first card slot and the second card slot.