CN218123902U - Socket with improved structure - Google Patents

Abstract

The present disclosure relates to a socket. The socket (100) includes: a first jack (X), a second jack (Y) and a third jack (Z) arranged in a line; and a movable door assembly including a first movable door assembly (410) disposed below the first jack (X) and a second movable door assembly (420) disposed below the third jack (Z), wherein the first movable door assembly (410) and the second movable door assembly (420) are provided in linkage with each other such that one of the first movable door assembly (410) and the second movable door assembly (420) is actuated to provide a respective power output at the adjacent two jacks when the plug is inserted into the respective adjacent two jacks, and the other of the first movable door assembly (410) and the second movable door assembly (420) is driven to move to block the other of the adjacent two jacks of the three jacks. The socket according to the present disclosure can achieve miniaturization of the device and can provide an enhanced safety protection function.

Description

Socket with improved structure

Technical Field

Embodiments of the present disclosure relate generally to a receptacle, and more particularly to a receptacle for providing dual power output.

Background

To accommodate the differences in the supply voltage of outlets used in different countries or regions, locations such as hotels are often provided with outlets providing different power outputs. However, the conventional socket mostly adopts the 146-type socket, and the size of the socket is, for example, 86 × 146mm in length × width, and two 86mm wall boxes are occupied when the socket is installed, so that the socket is high in cost and complex in structure. It is desirable to be able to reduce the size of such a socket to mount the socket in, for example, a wall box, while ensuring safety in use by the user.

Disclosure of Invention

Embodiments of the present disclosure provide a receptacle intended to address one or more of the above problems, as well as other potential problems.

According to a first aspect of the present disclosure, a receptacle for providing dual power output is provided. The socket may include: three jacks disposed on the face cover, including a first jack, a second jack and a third jack arranged in a row, adjacent ones of the first jack and the second jack being adapted to receive a two-pin plug to provide a first power output, adjacent ones of the second jack and the third jack being adapted to receive a two-pin plug to provide a second power output different from the first power output; and a movable door assembly including a first movable door assembly disposed below the first receptacle and a second movable door assembly disposed below the third receptacle, wherein the first and second movable door assemblies are arranged in linkage with each other such that one of the first and second movable door assemblies is actuated to provide a respective power output at the adjacent two receptacles when a plug is inserted into the respective adjacent two receptacles and drives the other of the first and second movable door assemblies to move to block the other of the three receptacles other than the adjacent two receptacles.

According to the outlet of the embodiment of the present disclosure, miniaturization of the outlet device can be achieved, and an enhanced safety protection function can be provided.

In addition, according to the socket of the embodiment of the disclosure, a user does not need to do any additional action, and only needs to select the corresponding jack on the socket to insert the plug, so that the power can be conveniently drawn, the use of the user is facilitated to the greatest extent, and the safety is ensured.

In some embodiments, the socket may further comprise a transformer assembly adapted to draw power from a power source, wherein the transformer assembly comprises two sets of coils on a secondary side, and a circuit board assembly electrically connected to the transformer assembly, wherein the circuit board assembly comprises four contacts electrically connected to the two sets of coils to respectively enable parallel or series connection of the two sets of coils by varying a connection between the two sets of coils to provide the first power output and the second power output.

In some embodiments, the first movable door assembly may include a first protective door that is actuated in response to insertion of a plug into the first and second jacks, the second movable door assembly including a second protective door that is actuated in response to insertion of a plug into the second and third jacks, wherein one of the first and second protective doors includes one first conductive dome and the other of the first and second protective doors includes two second conductive domes, movement of the first and second protective doors causing the respective conductive dome to make electrical contact with a respective one of the four contacts to form a power supply loop.

In some embodiments, the receptacle may further comprise a lever assembly disposed below the second receptacle and between the first movable door assembly and the second movable door assembly, wherein the lever assembly comprises a rotatably mounted lever, wherein the first movable door assembly and the second movable door assembly effect the linkage through the lever.

In some embodiments, the lever may include a disengaged position in which the conductive tabs of the first and second protective doors are disengaged from the contacts of the circuit board assembly, and a pivoted position in which the conductive tabs on the respective one of the first and second protective doors are in contact with the respective contacts on the circuit board assembly.

In some embodiments, each of the first and second protective doors may include a protrudingly extending engagement arm disposed at least partially overlapping the lever at the disengaged position.

In some embodiments, each of the first and second protection doors may include an abutting portion that abuts the lever against each other at the pivot position so that the protection door that does not form the power supply circuit of the first and second protection doors is held at the blocking position.

In some embodiments, the movable door assemblies may further include a biasing spring disposed between the respective movable door assembly and the housing of the receptacle.

In some embodiments, the circuit board assembly may be arranged in the base of the socket in a state where the plane in which the four contacts are provided is parallel to the insertion direction of the plug.

In some embodiments, the first conductive dome and the second conductive dome are arranged at different heights relative to each other in an insertion direction of the plug.

In some embodiments, the face cover of the receptacle includes indicia on the face cover adjacent the first and second receptacles indicating respective power outputs.

Drawings

The above and other objects, features and advantages of the embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present disclosure are illustrated by way of example and not by way of limitation.

Fig. 1 shows a schematic top view of a receptacle according to an embodiment of the present disclosure.

Fig. 2 shows a circuit schematic of an outlet providing a first power output according to an embodiment of the disclosure.

Fig. 3 shows a circuit schematic of an outlet providing a second power output according to an embodiment of the disclosure.

Fig. 4 shows an exploded view of a receptacle according to an embodiment of the present disclosure.

Fig. 5 shows a base module schematic of a socket according to an embodiment of the disclosure.

Figure 6 shows an exploded view of a base module of a socket according to an embodiment of the present disclosure.

Fig. 7 illustrates a perspective view of a first movable door assembly from a first perspective in accordance with an embodiment of the present disclosure.

Fig. 8 illustrates a perspective view of a first movable door assembly from a second perspective in accordance with an embodiment of the present disclosure.

Fig. 9 illustrates a perspective view of a second movable door assembly from a first perspective in accordance with an embodiment of the present disclosure.

Fig. 10 illustrates a perspective view of a second movable door assembly from a second perspective in accordance with an embodiment of the present disclosure.

Fig. 11 shows a schematic top view of a base module with a lever in a disengaged position according to an embodiment of the disclosure.

Fig. 12 illustrates a top view schematic of a base module with a lever in a first pivot position according to an embodiment of the present disclosure.

Fig. 13 shows a top view schematic of a base module with a lever in a second pivot position according to an embodiment of the present disclosure.

Like or corresponding reference characters designate like or corresponding parts throughout the several views.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The term "include" and variations thereof as used herein is meant to be inclusive in an open-ended manner, i.e., "including but not limited to". The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "upper," "lower," "front," "rear," and the like, refer to placement or positional relationships based on the orientation or positional relationship shown in the drawings, merely for convenience in describing the principles of the disclosure, and do not indicate or imply that the referenced elements must be in a particular orientation, constructed or operated in a particular orientation, and therefore should not be taken as limiting the disclosure.

In view of the problems of volume and space occupation of the conventional socket, the socket is miniaturized and simultaneously a scheme for preventing the user from mistakenly inserting the socket to damage the electrical equipment is provided according to the present disclosure. A socket according to an embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

Referring first to fig. 1 to 4, as shown in fig. 1 and 4, a socket 100 may include a face cover 10, a mounting panel 20, a transformer module 30, and a base module 40. The face cover 10 may provide an interface for a user to insert a plug. The mounting panel 20 may be used to cover the electrical modules of the receptacle to provide safety protection and also to facilitate installation of the receptacle. The transformer module 30 may be used to provide multiple power outputs. In an embodiment of the present disclosure, a configuration according to an embodiment of the present disclosure is illustrated with a dual power output. It is worth mentioning that this is merely exemplary. The base module 40 may be adapted to arrange the socket terminal part and provide an error-proof protection function.

As shown in fig. 1, the face cover 10 may include three insertion holes, i.e., a first insertion hole X, a second insertion hole Y, and a third insertion hole Z, which are arranged in a row. Adjacent first and second jacks X and Y are adapted to receive a two pin plug to provide a first power output and adjacent second and third jacks Y and Z are adapted to receive a two pin plug to provide a second power output different from the first power output. The shape of the face cover 10 is merely exemplary, and in some embodiments, the socket may be provided with more jacks, for example, 2-holes of two phases or 3-holes of three phases may be additionally provided.

Fig. 2 shows a schematic diagram of a circuit 200 of an outlet providing a first power output, according to an embodiment of the disclosure. Fig. 3 shows a schematic diagram of a circuit 300 of an outlet providing a second power output according to an embodiment of the disclosure.

In the circuit 200, the primary coil 210 of the transformer may be connected to, for example, the L and N poles of the mains supply. The transformer comprises two sets of coils 220, 230 on the secondary side. Two sets of coils 220, 230 may be provided with four contacts (or terminals) a, B, C, D. As shown by the dashed lines, a coil 220 is connected in series between the a-B contacts; a coil 230 is connected in series between the C-D contacts. The two groups of coils can be connected in parallel or in series respectively by changing the connection mode between the two groups of coils so as to provide the first power output and the second power output.

In the circuit 200 providing the first power output, as shown in FIG. 2, the first power output may be provided between contacts A-D by establishing a connection between contacts B-C, as shown in solid lines. Similarly, in circuit 300 providing a second power output, as shown in FIG. 3, the second power output may be provided between contacts A-D by establishing connections between contacts A-C, B-D, as shown in solid lines.

It is worth noting that the winding arrangement of the transformer shown in fig. 2 and 3 is merely exemplary; any other suitable winding arrangement may also be applied to the socket according to embodiments of the present disclosure. According to the present disclosure, by dividing the secondary coil into a plurality of coil groups, a design space of a transformer size is improved, thereby reducing a size occupied by the transformer. Furthermore, different power outputs may be provided by varying the number of windings of the coil. The windings may be disposed in the transformer module 30 and may be connected with the circuit board assembly 40 through terminals.

The socket according to the embodiment of the present disclosure further includes a movable door assembly to change the connection manner between the contacts a, B, C, D by the movable door assembly. The movable door assembly is configured to establish respective electrical connections between different windings of the transformer when a user inserts the two-pin plug into any two adjacent apertures of the receptacle to provide a corresponding electrical power output.

The structure and operating principle of a movable door assembly according to an embodiment of the present disclosure will be described below with reference to fig. 5-10.

Fig. 5 illustrates a perspective view of a base module according to an embodiment of the disclosure. As shown in fig. 5, the base module may include a base 430 and a terminal module and a movable door assembly mounted in the base 430. The terminal module may comprise a plug spring 440 adapted to engage with a plug and a connection terminal 470 adapted to make an electrical connection with a mains circuit. A detailed description thereof will be omitted in consideration of the fact that the terminal module and the base 430 are well known in the art.

As shown in fig. 5 and 6, the movable door assembly may include a first movable door assembly 410 disposed below the first jack X and a second movable door assembly 420 disposed below the third jack Z. According to the socket of the embodiment of the present disclosure, the first movable door assembly 410 and the second movable door assembly 420 are provided in linkage with each other such that one of the first movable door assembly 410 and the second movable door assembly 420 is actuated to provide a respective power output at the adjacent two receptacles when the plug is inserted into the respective adjacent two receptacles, and the other of the first movable door assembly 410 and the second movable door assembly 420 is driven to move to block the other receptacle other than the adjacent two receptacles of the three receptacles.

According to the embodiment of the disclosure, the plug can be used for driving the movable door component to move through the action of inserting the plug by a user, and then corresponding electrical connection is realized to provide corresponding power output. In addition, the movable door assembly can also lock the protection door which is not inserted with the plug, other foreign matters are prevented from being inserted into the jack through the jack which is not inserted with the plug, and the safety is further improved.

In some embodiments, as shown in fig. 6, the base module may include a circuit board assembly 450 mounted in the base 430. The circuit board assembly 450 may include four contacts a, B, C, D that are electrically connected to the coils of the transformer assembly 30. The first and second power outputs may be provided by establishing connections between the different contacts a, B, C, D.

In some embodiments, as shown in fig. 6, first movable door assembly 410 may include a first protective door 415 that is actuated in response to insertion of a plug into first jack X and second jack Y, and second movable door assembly 420 includes a second protective door 425 that is actuated in response to insertion of a plug into second jack Y and third jack Z. The first protective door 415 may include a first conductive dome 412. The second protective door 425 may include a second conductive dome 422. When a user inserts a two-pin plug into any two adjacent jacks of the three jacks X, Y, Z, the inserted pins will drive the first protective door 415 and the second protective door 425 to move so that the respective conductive spring is in electrical contact with the respective contacts of the four contacts to form a power supply loop.

In some embodiments, as shown in fig. 6, the movable door assembly is resiliently biased disposed in the base module. For example, in some embodiments, the receptacle further includes a biasing spring 50 disposed between the respective movable door assembly and the base housing of the receptacle 100. The moving position and the stopping position of the protective door can be controlled by the biasing spring 50 and the corresponding stopper member. It should be noted that the illustrated position of the biasing spring 50 is merely exemplary, and the biasing spring 50 may be disposed in any other suitable position.

In some embodiments, as shown in fig. 6, the base module may further include a lever assembly disposed below the second insertion hole Y and between the first movable door assembly 410 and the second movable door assembly 420. The lever assembly includes a rotatably mounted lever 460. The first movable door assembly 410 and the second movable door assembly 420 are interlocked by a lever 460. Thus, the linkage between the first movable door assembly 410 and the second movable door assembly 420 can be conveniently achieved by the lever 460. It is worth noting that the lever 460 may include a variety of implementations. The illustrated embodiments are merely illustrative and not restrictive.

In some embodiments, the lever 460 includes a disengaged position and a pivoted position. The term "disengaged position" refers to the position of the lever when no plug is inserted in the three jacks X, Y, Z. The term "pivot position" refers to the position of the lever after any adjacent jack of the three jacks X, Y, Z has been plugged. In the disengaged position, the conductive tabs of first protective door 415 and second protective door 425 are disengaged from the contacts of circuit board assembly 450. In the pivoted position, the conductive tabs on respective ones of first protective door 415 and second protective door 425 contact respective contacts on circuit board assembly 450. The conductive tabs may be formed in any suitable shape and location so long as the conductive tabs facilitate reliable electrical contact with the contacts.

Fig. 7-10 illustrate structural details of a first movable door assembly and a second movable door assembly according to embodiments of the present disclosure.

As shown in fig. 7 and 8, the first protective door 415 may include a protrudingly extending engagement arm 414, and at the separated position, the engagement arm 414 is disposed to at least partially overlap the lever 460. Such a configuration may facilitate force between the engagement arm 414 and the lever 460 and facilitate compactness. In addition, the first protection door 415 may further be provided with a first conductive elastic piece 412 at a side far away from the insertion side of the insertion hole.

In some embodiments, first protective door 415 may further include an abutting portion 416, and in the pivoted position, abutting portion 416 and lever 460 abut each other, so that one of first protective door 415 and second protective door 425, which does not form a power supply circuit, is held in the blocking position. Thus, the latch of the protective door can be realized by the engagement of the abutting portion and the lever.

Similarly, as shown in fig. 9 and 10, the second protective door 425 may include a protrudingly extending engagement arm 424, the engagement arm 424 being disposed at least partially overlapping the lever 460 at the separated position. Such a configuration may facilitate force between the engagement arm 414 and the lever 460 and facilitate compactness. In addition, the second protection door 425 may further be provided with a second conductive elastic piece 422 at a side far from the side where the jack is inserted.

In some embodiments, the second protective door 425 may further include an abutment 426, and in the pivoted position, the abutment 426 and the lever 460 abut each other to keep the protective door, which does not form the power supply circuit, of the first protective door 415 and the second protective door 425 in the blocking position. Thus, the latch of the protective door can be realized by the engagement of the abutting portion and the lever.

In some embodiments, the circuit board assembly 450 is disposed in the base 430 of the receptacle 100 with the plane in which the four contacts are disposed parallel to the insertion direction of the plug. In the embodiment shown in fig. 6, the circuit board assembly 450 is vertically positioned. This arrangement can facilitate the layout and driving of the socket parts. In some embodiments, the first conductive dome 412 and the second conductive dome 422 are arranged at different heights in the plug insertion direction. In this case, there is an advantage in layout and driving of the components.

In some embodiments, as shown in fig. 1, the face cover 10 of the receptacle 100 includes indicia on it at locations adjacent to the first jack X and the third jack Z to indicate the respective power outputs. For example, in the illustrated embodiment, voltages of 115V and 240V are labeled, respectively. It is worth noting that this is merely exemplary, and other voltages may be provided as desired.

According to the socket disclosed by the embodiment of the disclosure, a user can conveniently select the insertion jack of the plug according to the identification without any additional operation of the user. In this case, even if the outlet simultaneously provides dual power outputs, it is possible to effectively avoid a situation in which the electrical device is damaged due to forgetting to perform an operation requiring additional power.

The operation of the socket according to the embodiment of the present disclosure is explained below with reference to fig. 11 to 13. As shown in fig. 11, the jacks X, Y, Z of the socket are not plugged with plugs. In the state of fig. 11, the first protection door 415 and the second protection door 425 are separated from the circuit board assembly 450 by a certain distance via the biasing spring 50. Thus, the receptacle does not provide any power output. In the illustrated state, the lever 460 is held at the separated position by the first protection door 415 and the second protection door 425.

As shown in fig. 12, when the user inserts the plug into the sockets Y, Z, the pins of the plug will push the second shutter 425 (i.e., the right shutter) to move downward. The second protective door 425 moves downward against the force of the biasing spring 50 such that the first conductive dome 412 on the second protective door 425 contacts a corresponding contact on the circuit board assembly 450 to provide a power return path. Meanwhile, as second protective door 425 moves downward against the force of biasing spring 50, lever 460 rotates clockwise to apply an upward force to first protective door 415, such that first protective door 415 cannot move downward and closes jack X.

When the user pulls the plug out of the insertion holes Y, Z, the pins release the pressing force to the second shutter 425. Thereby, the biasing spring 50 is restored to be elastically deformed and the second protection door 425 will be moved upward by the restoring force of the biasing spring 50. Meanwhile, as second protective door 425 is to be moved upward, lever 460 is to be rotated counterclockwise in the drawing, releasing the upward force applied to first protective door 415; the first protective door 415 is restored to the state of fig. 11.

Similarly, as shown in fig. 13, when a user inserts a plug into jacks X, Y, the pins of the plug will push first protective door 415 (i.e., the left protective door) to move downward. The first protective door 415 moves downward against the force of the biasing spring 50 such that the second conductive dome 422 on the first protective door 415 contacts a corresponding contact on the circuit board assembly 450 to provide a power return path. Meanwhile, as first protective door 415 moves downward against the force of biasing spring 50, lever 460 rotates clockwise to apply an upward force to second protective door 425, such that second protective door 425 cannot move downward and close jack Z.

When the user pulls the plug out of the sockets X, Y, the pin releases the pressing force to the first protection door 415. Thereby, the biasing spring 50 is restored to be elastically deformed and the first protection door 415 will be moved upward by the restoring force of the biasing spring 50. At the same time, as first protective door 415 is moved upward, lever 460 is rotated in a clockwise direction in the illustration, releasing the upward force applied to second protective door 425; second protective gate 425 returns to the state of fig. 11.

According to the socket of the embodiment of the disclosure, miniaturization of the device can be realized, and an enhanced safety protection function can be provided.

Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (11)

1. A receptacle (100) for providing dual power output, comprising:

three jacks arranged on the face cover (10), including a first jack (X), a second jack (Y) and a third jack (Z) which are arranged in a row, wherein the adjacent first jack (X) and the adjacent second jack (Y) are suitable for receiving a two-pin plug to provide a first power output, and the adjacent second jack (Y) and the adjacent third jack (Z) are suitable for receiving a two-pin plug to provide a second power output different from the first power output; and

a movable door assembly comprising a first movable door assembly (410) arranged below the first jack (X) and a second movable door assembly (420) arranged below the third jack (Z), wherein the first movable door assembly (410) and the second movable door assembly (420) are arranged in linkage with each other such that one of the first movable door assembly (410) and the second movable door assembly (420) is actuated upon insertion of a plug into a respective two adjacent jacks to provide a respective power output at the two adjacent jacks and drives the other of the first movable door assembly (410) and the second movable door assembly (420) to move to block the other of the three jacks other than the two adjacent jacks.

2. The receptacle (100) of claim 1, further comprising a transformer assembly (30) adapted to draw power from a power source and a circuit board assembly (450) electrically connected to the transformer assembly (30), wherein the transformer assembly (30) includes two sets of coils on a secondary side, the circuit board assembly (450) including four contacts (a, B, C, D) electrically connected to the two sets of coils to effect parallel or series connection of the two sets of coils, respectively, by varying the connection between the two sets of coils to provide the first power output and the second power output.

3. The receptacle (100) of claim 2, wherein the first movable door assembly (410) comprises a first protective door (415) that is actuated in response to insertion of a plug into the first and second jacks (X, Y), and the second movable door assembly (420) comprises a second protective door (425) that is actuated in response to insertion of a plug into the second and third jacks (Y, Z), wherein one of the first and second protective doors (415, 425) comprises one first conductive dome (412), and the other of the first and second protective doors (415, 425) comprises two second conductive domes (422), and movement of the first and second protective doors (415, 425) causes the respective conductive dome to electrically contact a respective one of the four contacts to form a power supply loop.

4. The receptacle (100) of claim 3 further comprising a lever assembly disposed below the second receptacle (Y) and between the first movable door assembly (410) and the second movable door assembly (420), wherein the lever assembly comprises a rotatably mounted lever (460), wherein the first movable door assembly (410) and the second movable door assembly (420) effect the linkage through the lever (460).

5. The receptacle (100) of claim 4, wherein the lever (460) includes a disengaged position in which the conductive tabs of the first and second protective doors (415, 425) are disengaged from the contacts of the circuit board assembly (450) and a pivoted position in which the conductive tabs on the respective ones of the first and second protective doors (415, 425) are in contact with the respective contacts on the circuit board assembly (450).

6. The receptacle (100) of claim 5 wherein each of the first protective door (415) and the second protective door (425) includes a protrudingly extending engagement arm (414), the engagement arm (414) being disposed at least partially overlapping the lever (460) in the disengaged position.

7. The receptacle (100) of claim 5 wherein each of the first protective door (415) and the second protective door (425) comprises an abutment (416), wherein in the pivoted position the abutment (416) and the lever (460) abut each other such that the one of the first protective door (415) and the second protective door (425) not forming a power supply loop remains in the blocking position.

8. The socket (100) according to any one of claims 3-7, wherein the movable door assemblies further comprise a biasing spring (50) arranged between the respective movable door assembly and the housing of the socket (100).

9. The receptacle (100) of any of claims 3-7 wherein the circuit board assembly (450) is disposed in a base (430) of the receptacle (100) with a plane in which the four contacts are disposed parallel to an insertion direction of the plug.

10. The socket (100) of claim 9, wherein the first conductive dome (412) and the second conductive dome (422) are arranged at different heights in an insertion direction of the plug.

11. The receptacle (100) of claim 10 wherein the face cover (10) of the receptacle (100) includes indicia on the face cover (10) adjacent the first receptacle (X) and the third receptacle (Z) indicating respective power outputs.

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