TWM526223U - Adaptor of wall socket - Google Patents

Description

Wall plug adapter

The present invention relates to a wall plug adapter, and more particularly to a wall plug adapter for plugging into a wall socket or the like.

At present, the indoor power supply allocation plan is mostly buried in the wall, and the socket structure arranged through the wall is connected with the mains line or the signal line. When electronic products (such as mobile phones, digital cameras, PDA devices, and other portable electronic products) are exhausted and need to be powered to maintain operation, replenish power, or have to connect to network signals for information transmission, users can The electronic product extends through the transmission line and the plug to extend the socket structure, so that the electronic product is connected to the mains or signal line to obtain power or connect the network signal.

The applicant has proposed a related art of "a combination structure of a charger and its socket panel" (Taiwan Patent No. M366825, US Pat. No. 8,415,920), on the side of which a terminal is provided, and the charger is provided with a terminal. The connector, the connector is electrically connected to a charging circuit inside the charger, and the charger has a panel connector. The charger can be combined with the socket panel, and the charger is convenient to use, and there is no trouble that cannot be found. The connector also has the function of an adapter.

However, the connector of the charger (adapter) is fixed to the body of the charger, that is, the connector cannot be replaced according to different needs of the user, and the versatility is not good. If the user wants to use another connector, it is necessary to purchase a new charger, which inevitably burdens the user. Furthermore, the above charger (transfer The function of the device is relatively simple and does not have the function of carrying electronic products.

In summary, the creator feels that the above defects can be improved, and he has devoted himself to research and cooperates with the application of academics, and finally proposes a design that is reasonable in design and effective in improving the above defects.

The technical problem to be solved by the present invention is to provide a wall plug adapter device, which can replace the connector module according to needs, has better versatility, is convenient for application, and does not need to change the adapter body to have a reduction. The cost effect can also reduce the burden on the user to purchase the adapter.

The technical problem to be solved by the present invention is also to provide a wall plug conversion device, which can have the function of carrying electronic products.

In order to solve the above technical problem, the present invention provides a wall insertion switching device, comprising: an adapter body, the adapter body is provided with a receiving space; and a terminal unit connected to the adapter body, the terminal unit And a connector module, the connector module is detachably disposed in a receiving space of the adapter body, the connector module has a module body and at least disposed on the module body A first connector, the connector module and the adapter body are electrically connected, and the at least one first connector exposes the adapter body.

In order to solve the above technical problem, the present invention also provides a wall insertion switching device, comprising: an adapter body; a terminal unit, the terminal unit is connected to the adapter body; and a connector module, the connector module can The connector module is disposed on the adapter body, and the connector module has a module body and at least one first connector disposed on the module body, between the connector module and the adapter body Electrical connection.

The present invention has at least the following advantages: the connector module of the present invention is detachably disposed on the adapter body, and different connector modules can be replaced as needed, which has better versatility to facilitate application, and does not The adapter body needs to be changed to have the effect of reducing costs, and can also reduce The burden of user purchase.

The creation can also be provided with a carrying board, which can have the function of carrying electronic products, and can be used to carry electronic products that use the wall plug-in switching device for power transmission or network information transmission, thereby protecting the electronic products and maintaining the electrical connection of the electronic products. The actual use requirements of the network transmission operation.

The creation connector module may be provided with a display device for displaying a current amount or a voltage, and the display device is a plurality of light emitting diodes or a liquid crystal display. The display device can be used to display the magnitude of the current, the magnitude of the voltage, etc., so that the function of the wall plug adapter is more perfect.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and explanation, and are not intended to limit the creation.

1‧‧‧Adapter body

11‧‧‧ accommodation space

12‧‧‧ wire trough

13‧‧‧ Socket slot

14‧‧‧ accommodating slots

17‧‧‧Electrical contacts

18‧‧‧Winding layer

2‧‧‧Terminal unit

3‧‧‧Connector Module

31‧‧‧Module Ontology

32‧‧‧First connector

33‧‧‧Electrical contacts

34‧‧‧Connecting seat

35‧‧‧Electronic devices

36‧‧‧Display device

4‧‧‧ socket unit

5‧‧‧Connecting line

51‧‧‧Connecting head

52‧‧‧Second connector

7‧‧‧Bearing board

73‧‧‧ Missing slots

10‧‧‧ Third connector

100‧‧‧fourth connector

101‧‧‧ Cable

102‧‧‧ fifth connector

103‧‧‧ sixth connector

1 is a perspective view of a first embodiment of the inventive wall plug adapter.

2 is a perspective view of a second embodiment of the inventive wall plug adapter.

3 is a perspective view of a third embodiment of the inventive wall plug adapter.

4 is a perspective view of a fourth embodiment of the inventive wall plug adapter.

Figure 5 is a perspective view of a fifth embodiment of the inventive wall plug adapter.

Figure 6 is a perspective view of a sixth embodiment of the inventive wall plug adapter.

Figure 7 is a perspective view of a seventh embodiment of the inventive wall plug adapter.

Figure 8 is a perspective view of an eighth embodiment of the inventive wall plug adapter.

Figure 9 is a perspective view of a ninth embodiment of the inventive wall plug adapter.

Figure 10 is a perspective view of a tenth embodiment of the inventive wall plug adapter.

Figure 11 is a perspective view of an eleventh embodiment of the inventive wall plug adapter.

Figure 12 is a perspective view of a twelfth embodiment of the inventive wall plug adapter.

[First Embodiment]

Referring to FIG. 1 , the present invention provides a wall plug adapting device, which can be used for plugging into a wall socket or the like, and the wall plugging device can be further provided with a charging circuit. In order to provide the function of the charger, the charging circuit is a conventional technique and will not be described again. If the wall plug adapter does not require the function of a charger, the charging circuit can be omitted.

The wall plug adapter includes an adapter body 1, a terminal unit 2, and at least one connector module 3. The shape of the adapter body 1 is not limited, and may be a plate body, a block body or any arbitrary shape, and is not limited thereto, and may be appropriately changed as needed. The adapter body 1 can be integrally formed or a two-piece, multi-piece combined construction. The adapter body 1 may further be provided with at least one socket unit 4. The specifications and types of the socket unit 4 are not limited, and may be various types of jacks or electrical connectors. A suitable circuit (not shown) may also be provided inside the adapter body 1.

The terminal unit 2 is disposed on the adapter body 1. The terminal unit 2 can be in the form of a pin, but the type and configuration of the terminal unit 2 are not limited. The terminal unit 2 is fixedly or retractably connected to the adapter body 1. If it is a retractable type, the terminal unit 2 can be flexibly folded to facilitate the carrying of the wall plugging device. The embodiment discloses that the terminal unit 2 is fixedly disposed on the adapter body 1. The terminal unit 2 can protrude from one side (rear side) of the adapter body 1. The terminal unit 2 is preferably disposed on a side of the adapter body 1 where the socket unit 4 is not disposed. In this embodiment, the terminal unit 2 and the socket unit 4 are disposed on both sides (rear side and front side) of the adapter body 1.

The connector module 3 is detachably disposed on the adapter body 1 , and the connector module 3 is electrically connected to the adapter body 1 and the terminal unit 2 . One or more of the connector modules 3 may be provided, or two or more may be provided as needed. This embodiment discloses that a connector module 3 is provided. The connector module 3 has a module body 31 and at least one first connector 32 disposed on the module body 31. The module body 31 can be a square or other shaped block, and its shape is not limited. The first connector 32 can be a USB connector, an IEEE 1394 connector, an HDMI connector, and an AV terminal. Various electrical connectors such as sub- or DC terminals. A receiving space 11 corresponding to the connector module 3 is disposed on one side (front side) of the adapter body 1. The connector module 3 is detachably (optional) accommodated in the receiving space 11. The connector module 3 can also be further fixed to the adapter body 1 by screwing or snapping, and the first connector 32 exposes the adapter body 1.

The outer edge of the connector module 3 can be provided with one, two or more electrical contacts (not shown) as an input terminal, which can be used to correspond to the electrical contacts on the adapter body 1 (Fig. Slightly), contact each other to achieve an electrical connection. The electrical contact of the adapter body 1 is electrically connected to the terminal unit 2, so that the connector module 3 and the circuit inside the adapter body 1 and the terminal unit 2 can be electrically connected to make the adapter body 1. The power or signal of the terminal unit 2 is transmitted to the connector module 3. The connector module 3 and the first connector 32 can be used as an output.

In this embodiment, the receiving space 11 is disposed on one side (front side) of the adapter body 1 to expose the connector module 3 to one side of the adapter body 1. In another embodiment (not shown), the connector module 3 is provided in plurality, and the thickness of the adapter body 1 is thick, and a part of the receiving space 11 can be disposed on the adapter body 1. The edge exposes a portion of the connector module 3 to the edge of the adapter body 1.

The connector module 3 is disposed on the adapter body 1 , and the front end of the connector module 3 may protrude slightly from the front side of the adapter body 1 or may be aligned with the front side of the adapter body 1 . The edge of the connector module 3 can also be provided with a recess or a protrusion (not shown) to push the connector module 3 out of the accommodating space 11 by a tool, thereby facilitating the user to replace the connector module 3.

An electronic device 35 can be further disposed on the module body 31. The electronic device 35 can be hidden or exposed to the module body 31. The electronic device 35 can be a transformer, a night light, a wireless charger, an emergency light, and a wireless device. Devices such as controllers, wireless APs, wireless modules, timers, Ground Fault Circuit Interrupters (GFCI), wire take-ups, or sensors. The electronic device 35 can also be a motion detector, which has the function of detecting a moving object. The electronic device 35 can also be a battery. The connector module 3 can also have the function of a mobile power source.

The wall socket adapter device of the present invention can be connected to the corresponding wall socket by the terminal unit 2, so that the wall plug adapter can be connected to the mains line or the signal line. The user can electrically connect an electronic product (such as a mobile phone) to the first connector 32 or the socket unit 4.

In this embodiment, the adapter body 1 is further pivotally connected to a carrier board 7 so that the carrier board 7 is reversibly connected to the adapter body 1. However, the configuration in which the carrier plate 7 is coupled to the adapter body 1 is not limited, and various shafts, hinges, and pivotal structures can be utilized. The carrier plate 7 can be flipped down to the carrying position for placing the electronic product, and the carrier plate 7 can also be flipped up to be stacked on the top side or other position of the adapter body 1. The edge of the carrier plate 7 can also be provided with a buckle portion (not shown), so that the carrier plate 7 can be buckled and fixed to the adapter body 1 when the carrier plate 7 is turned upside down. The edge of the carrier plate 7 can also be provided with a plurality of notches 73, which can be used for hanging transmission lines, connectors and the like of electronic products.

In another embodiment of the present invention, a receiving box (not shown) may be further included, and the receiving box is disposed on the adapter body 1. The front side of the receiving box has an opening. A accommodating plate is disposed in the accommodating case, and the carrying plate can slide forward and backward in the accommodating case. The carrier plate selectively protrudes from the opening of the receiving box, that is, when the carrying plate slides forward, the opening of the receiving box can be extended to carry the electronic product. The user can first stretch the carrier board out of the accommodating box to carry the electronic product, so that the electronic product can be smoothly placed during the process of power connection, charging and network transmission.

[Second embodiment]

Referring to FIG. 2, in the embodiment, the above-mentioned carrier plate 7 is omitted, so that the overall structure of the wall insertion adapter can be simplified. In the present embodiment, the terminal unit 2 and the socket unit 4 are specifications of an European standard (e.g., Germany). In addition, the edge of the adapter body 1 can be further provided with a wire slot 12 for receiving a connecting wire 5, so that the connecting wire 5 can be wound around the adapter body 1. The slot 12 is provided The position of the slot is not limited, and the slot 12 can be disposed at any position of the edge of the adapter body 1, such as the left side, the right side, the top side or the bottom side.

The connecting wire 5 has a structure in which a conductor is provided inside and an insulating layer is coated on the outside of the conductor. However, the structure and type of the connecting wire 5 are not limited, and the connecting wire 5 may be various cables or wires. One end of the connecting line 5 is connected with a connecting head 51. The other end of the connecting line 5 is connected with a second connector 52. The connecting head 51 and the second connector 52 can be a USB connector, an IEEE1394 connector, an HDMI connector, and an AV. Various electrical connectors such as terminals or DC terminals. The connector 51 and the second connector 52 may be of a female or male type, and the specifications and types thereof are not limited.

One end of the connecting wire 5 can be electrically connected to the connector module 3 by the connector 51. Of course, one end of the connecting wire 5 can be electrically connected to the connector module 3 by other means. The connecting wire 5 is selectively wound around the edge of the adapter body 1, that is, the connecting wire 5 can be wound around the wire slot 12 at the edge of the adapter body 1, so that the connecting wire 5 can be properly fixed when not in use. The connecting wire 5 can also be pulled out of the wire slot 12 for ease of use.

The splicing slot 13 and the accommodating slot 14 are respectively connected to the two ends of the slot 12, and the insertion slot 13 and the receiving slot are respectively disposed at the edge of the adapter body 1. 14 is in communication with the trunking 12 and can be used to accommodate the connector 51 and the second connector 52, respectively.

The connector module 3 can be provided with a connector 34 corresponding to the insertion slot 13 , and the connector 34 can be a USB connector, an IEEE 1394 connector, an HDMI connector, an AV terminal, or a DC terminal. The connector 34 is disposed on a side of the connector module 3 adjacent to the insertion slot 13 so that the connector 51 can be inserted into the connector 34 simultaneously when the connector 51 is inserted into the slot. The connector 5 and the second connector 52 are electrically connected to the connector module 3 through the connector 51 and the connector 34, and the connector 51 is simultaneously inserted into the insertion slot 13 and the connector 34. A better fixing effect can be provided, like the locking function, so that the connector 51 can be stably inserted into the adapter body 1 and the connector module 3.

The adapter body 1 of the present embodiment can further be coupled with the connecting wire 5 and the second connector 52, and the connecting wire 5 and the second connector 52 are movably disposed on the adapter body 1. When the user needs to use the connecting cable 5 and the second connector 52, the connecting cable 5 and the second connector 52 can be used only after the connecting cable 5 and the second connector 52 are pulled out of the slot 12 and the receiving slot 14 of the adapter body 1. The connection line 5 and the second connector 52 are provided quickly, and the connection line 5 and the second connector 52 are not required to be used in a time-consuming manner, and the use is convenient and easy. When the connecting wire 5 and the second connector 52 are not used, the connecting wire 5 and the second connector 52 are not required to be removed, and can be stored in the wire slot 12 and the receiving groove 14 of the adapter body 1 without being lost. It is also very convenient when used later, and will not cause messiness or interference, so that the user can use the wall plug adapter.

In another embodiment of the present invention, a connector module (not shown) may be further added. The connector module has the same structure as the connector module 3, and the connector module is fixedly disposed on the switch. On the body 1.

[Third embodiment]

Referring to FIG. 3, in the embodiment, the terminal unit 2 and the socket unit 4 are specifications of an European standard (such as Germany). The socket unit 4 is disposed on the adapter body 1, and the socket unit 4 can be located in the connector module. Above or below group 3 (as shown in Figure 2, Figure 3).

[Fourth embodiment]

Referring to FIG. 4, in the embodiment, the second half of the adapter body 1 is formed with a winding layer 18, so that the connecting wire 5 can be wound around the edge of the wire groove 12 and the winding layer 18.

[Fifth Embodiment]

Referring to FIG. 5 , in the embodiment, the terminal unit 2 and the socket unit 4 are specifications of an European standard (such as Germany), and include a plurality of connector modules 3 and a plurality of socket units 4, and the connector modules. 3 detachably disposed on the adapter body 1 , the socket units 4 are disposed on the adapter body 1 .

[Sixth embodiment]

Referring to FIG. 6, in the embodiment, the socket unit 4 is a British (UK) gauge. grid.

[Seventh and Eightth Embodiments]

Referring to FIG. 7 and FIG. 8 , in the embodiment, the connector module 3 is provided with a display device 36. The display device 36 can be a plurality of LEDs. The display device 36 can also be a liquid crystal display. The display device 36 is electrically connected to the connector module 3 . For example, the display device 36 can be electrically connected to the first connector 32 . When the electronic product is electrically connected to the first connector 32, it can be used to display the amount of current transmitted to the electronic product, for example, the greater the number of light-emitting diodes, the greater the amount of current delivered. The display device 36 can be used to display the voltage level in addition to the amount of current that can be displayed.

Ninth Embodiment

Referring to FIG. 9 , in the embodiment, the adapter body 1 is fixed with a carrier plate 7 , and the carrier plate 7 can be disposed on the top side of the adapter body 1 or the like. The carrier plate 7 can be used to place an electronic product. The edge of the carrier plate 7 may also be provided with a notch 73 for hanging by a transmission line, a connector or the like of an electronic product.

[Tenth embodiment]

Referring to FIG. 10 , in the embodiment, the adapter body 1 is partially recessed to form a receiving space 11 , and the adapter body 1 is fixedly or rotatably disposed with a third connector 10 , and the third connector 10 can be It is electrically connected to the adapter body 1 and the terminal unit 2, and the like. The third connector 10 can function as an input or an output. The terminal unit 2 is disposed on the adapter body 1, and the terminal unit 2 is in the form of a pin. The connector module 3 is a cable reel module, and the connector module 3 is detachably disposed in the accommodating space 11 of the adapter body 1. The connector module 3 has a module body 31 and is disposed on At least one first connector 32 on the module body 31, the outer edge of the connector module 3 can be provided with one, two or more electrical contacts 33 as an input terminal or an output terminal, which can be used for Corresponding electrical contacts 17 on the connector body 1 are in contact with each other to achieve an electrical connection.

[Eleventh Embodiment]

Referring to FIG. 11 , in the embodiment, the connector module 3 is a battery module, and the connector module 3 is detachably disposed in the receiving space 11 of the adapter body 1 . 3 has a module body 31 and at least one first connector 32 disposed on the module body 31. The first connector 32 can serve as an input end or an output end, and the first connector 32 can also be used as an electrical contact. That is, the first connector 32 of the connector module 3 can be electrically connected to the electrical contacts 17 of the adapter body 1.

[Twelfth Embodiment]

Referring to FIG. 12, in the embodiment, the adapter body 1 is detachably provided with a fourth connector 100, and the fourth connector 100 can be erected or fallen down on the adapter body 1, fourth. When the connector 100 stands up on the adapter body 1, it can be electrically connected to an electronic product (such as a mobile phone). The fourth connector 100 is connected to the fifth connector 102 by a cable 101. One end of the cable 101 can be electrically connected to the adapter body 1 by the fifth connector 102. The cable 101 can be selectively wound around the edge of the adapter body 1, that is, the connecting wire 5 can be wound around the wire slot 12 at the edge of the adapter body 1. The edge of the adapter body 1 can be further provided with a sixth connector 103. The sixth connector 103 is electrically connected to the adapter body 1. The sixth connector 103 can also be used as an input or an output.

The creative connector module is detachably disposed on the adapter body, and can replace different connector modules according to needs, has better versatility, is convenient for application, and does not need to change the adapter body to have The cost reduction effect can also reduce the burden on the user to purchase the wall plug adapter.

The creation can also be provided with a carrying board, which can have the function of carrying electronic products, and can be used to carry electronic products that use the wall plug-in switching device for power transmission or network information transmission, thereby protecting the electronic products and maintaining the electrical connection of the electronic products. The actual use requirements of the network transmission operation. The carrier board can also be used with the connecting cable and the second connector to produce excellent results.

The creation connector module may be provided with a display device for displaying a current amount or a voltage, and the display device is a plurality of light emitting diodes or a liquid crystal display. The display It can be used to display the amount of current, voltage, etc., so that the function of the wall plug adapter is more perfect.

However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of patent protection of the present invention. Therefore, the equivalent changes of the present specification and the contents of the drawings are all included in the protection of the present invention. Within the scope, it is combined with Chen Ming.

1‧‧‧Adapter body

11‧‧‧ accommodation space

2‧‧‧Terminal unit

3‧‧‧Connector Module

31‧‧‧Module Ontology

32‧‧‧First connector

35‧‧‧Electronic devices

4‧‧‧ socket unit

7‧‧‧Bearing board

73‧‧‧ Missing slots

Claims (20)

A wall insertion adapter device includes: an adapter body, the adapter body is provided with a receiving space; a terminal unit connected to the adapter body, the terminal unit is in a pin type; and a connector module The connector module is detachably disposed in the receiving space of the adapter body, the connector module has a module body and at least one first connector disposed on the module body, the connector The module and the adapter body are electrically connected to each other, and the at least one first connector exposes the adapter body, and the outer edge of the connector module and the adapter body are provided with corresponding electrical properties. The contacts are in contact with each other to achieve an electrical connection. The wall-plugging device of claim 1, wherein the adapter body has a slot on the edge thereof, the slot accommodates a connecting line, and one end of the connecting line is connected with a connecting end, and the other end of the connecting line is connected with a first The connector body is provided with a socket, and the socket is connected to one end of the slot. The connector module is provided with a connector corresponding to the slot, and the connector is provided. The connector is inserted into the insertion slot and the connector on a side of the connection module adjacent to the insertion slot. The wall insertion adapter of claim 1, wherein the adapter body is pivotally connected or fixed to a carrier. The wall plugging device of claim 1, wherein the module body is provided with an electronic device, which is a transformer, a night light, a wireless charger, an emergency light, a wireless controller, a wireless AP, and a wireless module. Group, timer, leakage circuit breaker, sensor, motion detector, wire take-up or battery. The wall-plugging device of claim 1, wherein the adapter body is formed with a winding layer, and a winding line is disposed around the edge of the winding layer, and one end of the connecting wire is connected with a connecting end, and the other end of the connecting line A second connector is connected, and an edge of the adapter body is provided with a socket, and the edge of the connector module is disposed opposite to the socket The connector is disposed on a side of the connection module adjacent to the insertion slot, and the connector is inserted into the insertion slot and the connector. The wall-plugging device of claim 1, wherein the connector module is provided with a display device for displaying a current amount or a voltage, and the display device is a plurality of light-emitting diodes or a liquid crystal display. The wall plug adapter of claim 1, wherein another adapter module is fixedly disposed on the adapter body. The wall insertion adapter of claim 1, wherein the adapter body is fixedly or rotatably provided with a third connector. The wall plug adapter of claim 1, wherein the adapter body is detachably provided with a fourth connector. The wall-plugging device of claim 9, wherein the fourth connector is connected to the fifth connector by a cable, and the fifth connector is electrically connected to the adapter body. A wall plug adapter device includes: an adapter body; a terminal unit connected to the adapter body; and a connector module, the connector module being detachably disposed on the adapter body The connector module has a module body and at least one first connector disposed on the module body. The connector module and the adapter body are electrically connected to each other. The edge of the adapter body is provided with corresponding electrical contacts to make electrical connection. The wall plug adapter of claim 11, wherein one side of the adapter body is provided with a receiving space corresponding to the connector module, and the connector module is selectively received in the receiving space. The wall-plugging device of claim 11, wherein the edge of the adapter body is provided with a wire slot, the wire slot accommodates a connecting wire, and one end of the connecting wire is connected with a connecting head, and the other end of the connecting wire is connected with a first Two connectors, the edge of the adapter body is a connector slot is disposed at one end of the slot, and a connector corresponding to the slot is disposed at an edge of the connector module, and the connector is disposed on the connector module and the slot On the adjacent side, the connector is inserted into the insertion slot and the connector. The wall insertion adapter of claim 11, wherein the adapter body is pivotally connected or fixed to a carrier. The wall plugging device of claim 11, wherein the module body is provided with an electronic device, which is a transformer, a night light, a wireless charger, an emergency light, a wireless controller, a wireless AP, and a wireless module. Group, timer, leakage circuit breaker, sensor, motion detector, wire take-up or battery. The wall-plugging device of claim 11, wherein the adapter body is formed with a winding layer, and a winding line is disposed around the edge of the winding layer, and a connecting head is connected to one end of the connecting wire, and the other end of the connecting wire is connected A connector is disposed on the edge of the adapter body, and a connector slot is disposed on the edge of the connector module. The connector module is provided with a connector corresponding to the connector slot. The connector is disposed in the connection module and the connector Adjacent to the side of the slot, the connector is inserted into the slot and the connector. The wall-plugging device of claim 11, wherein the connector module is provided with a display device for displaying a current amount or a voltage, and the display device is a plurality of light-emitting diodes or a liquid crystal display. The wall plug adapter of claim 11, wherein another adapter module is fixedly disposed on the adapter body. The wall insertion adapter of claim 11, wherein the adapter body is fixedly or rotatably provided with a third connector. The wall-plugging device of claim 11, wherein the adapter body is detachably provided with a fourth connector, the fourth connector connecting a fifth connector by a cable, the fifth connection The plug is electrically connected to the adapter body.