RU168735U1 - Safe electrical outlet with electronic shock protection - Google Patents

Abstract

A safe electrical outlet is designed to protect against electric shock when foreign objects enter the outlet. When installing the contact pins in the holes (4, 6) at the end of the stroke, the plug type plug (27) presses the protective button (7) with its body, which is a signal for the microcontroller to close the electronic relay unit (26) in order to supply electric current to the contacts phase 1 (18) and phase 2 (19). EFFECT: until a plug type plug is inserted into the socket, there is no electric current at the phase contacts.

Description

The technical field to which the utility model relates.

The utility model relates to electrical engineering, namely to electrical outlets having a system of protection against electric shock

Technical result

The security of the electrical outlet used to connect electrical appliances to the network has been improved. Electric shock is almost completely eliminated. Achieved due to the unique layout of the elements of the outlet, as well as the use of a microcontroller and a controlled electronic relay.

Compared with the well-known models, the reliability of the system of protection against electric shock due to the use of electronic components that can withstand a much larger number of on / off cycles of the plug in the socket than the mechanical protection devices used in the known models is significantly increased.

Disadvantages of Existing Models

Known models: RF patent 2040085 from 07.20.1995, RF patent 2093938 from 20.10.1997.

All existing safety sockets use mechanical protection systems like curtains, dampers, etc. Mechanical protective elements can fail over time or start working worse due to dust and dirt particles accumulated in the gaps of the outlet. Which can lead to jamming of the mechanical element both in the “protected” position and in the “unprotected” position.

Such systems are ineffective in protecting children from electric shock, because the child can easily bend the “curtains” and “shutters” by taking a nail in each hand and plugging it into a power outlet. In the present utility model, electric shock is then excluded.

Detailed description of utility model

The Figure 1 shows the main appearance of the outlet. The socket consists of a support plate (15) with holes for fasteners (16), which allows you to fasten the socket to the wall using standard fasteners, such as screws, dowels, etc. - depending on the wall material. The Support Plate mounted on the wall is closed at the top with an External Decorative Frame (1). Then, the Front Panel (2) of the outlet is inserted into the External Decorative Frame and attached to the Base Plate using 4 pcs. Screws (3), at the same time fixing the External Decorative Frame.

The wires of the electrical phases 1 and 2, as well as the ground wire, are inserted into the Windows (12, 13, 14) and fixed by Clamping Screws (9, 10, 11).

In Figures 2, 3, the external elements of the housing are hidden to visually show the internal structure of the outlet.

The Security Button (7) is attached to Circuit Board 1 (17). Circuit Board 1 is attached to the Base Plate (15). The Phase 1 Contact (18), the Phase 2 Contact (19), and the Grounding Contacts (5) are mounted on the PCB 1.

Circuit Board 1 is connected by a Loopback Cable (20) to Circuit Board 2 (21). On the Connector Loop to the Circuit Board 1 are supplied: voltage 220 V phase 1.2, ground contact and the contacts of the protective button.

Microcontroller (25) and Electronic Relay (26) are installed on PCB 2.

Phases 1, 2 and the ground contact are supplied from the Input Windows (12, 13, 14) to the Printed Circuit Board 2 using the Wires (22, 23, 24).

Brief Description of the Drawings

1 - Exterior decorative frame

2 - The front panel of the outlet

3 - Screws

4 - Hole for the contact pin of the plug phase 1

5 - Grounding contacts

6 - Hole for the contact pin of the plug phase 2

7 - Security button

8 - Socket housing

9, 10, 11 - Clamping screws

12 - Window for inputting phase 1 wire

13 - Window for entering the phase 2 wire

14 - Window for entering the ground wire

15 - Base plate

16 - Holes for fasteners

17 - Circuit Board 1

18 - Phase 1 Contact

19 - Phase 2 Contact

20 - Connecting Loop

21 - Circuit Board 2

22 - Phase 1 Wire

23 - Phase 2 Wire

24 - Grounding Wire

25 - Microcontroller

26 - Electronic Relay Block

Description of the device in operation

The microcontroller (25) controls the Electronic Relay Unit (26). The Electronic Relay block controls the current supply to the contacts of Phase 1 (18) and Phase 2 (19). The protective button (7) is connected to the microcontroller.

The Security Button (7) is a key that closes the circuit in the pressed position. In the initial (not pressed) position, the Protection Button opens the electric power control circuit of Phases 1 and 2. When the power control circuit of Phases 1 and 2 is open, the Microcontroller opens the Electronic Relay Unit and no electric current is supplied to the contacts of Phases 1 and 2. The protective button is equipped with a spring that returns it to its original position in the absence of a pressing object. When the Plug of the electrical appliance is not inserted into the Socket, the Protective Button is in the initial, extreme right position, if you look at the section AA in Figure 4.

Known plugs used in electrical appliances have a design with a plane between the contact pins. Depicted in Figure 5.

Figure 6 shows a section with a Plug (27) installed in the socket. The plug, when installed in the socket, presses the Protective Button (7). The protective button in the pressed position closes the power control circuit of phases 1 and 2, the microcontroller sends a signal to the electronic relay block to supply electric current to the contacts of phases 1 and 2.

Thus, an electric current is supplied to the Phase 1 and 2 contacts only when the plug of the electric device is inserted into the socket. This is achieved due to the fact that the Plug presses the Protection Button with its body, and the Microcontroller sends a signal to the Electronic Relays that supply current to the Phase 1 and 2 Contacts.

Claims (1)

A secure electrical outlet containing an external decorative frame secured with latches to the front panel of the outlet, the front panel is fixed to the base plate with four screws, the front panel has a hole for the protective button and a movable plastic cover for the protective button that allows you to press the protective button located on the first printed circuit board, connected by wires to the second printed circuit board, during the installation of the plug type plug in the working position, for which there are two holes on the front panel I to enter the contact pins of the plug and the ground contacts, the signal from the protective button is transmitted to the microcontroller located on the second printed circuit board, connected to the electrical relay unit located on the second printed circuit board, and disconnecting the electrical circuit from the inputs of phase 1 and phase 2 to phase contacts 1 and phase 2.

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