WO2021164839A1

WO2021164839A1 - Quick installation system for electrical equipment

Info

Publication number: WO2021164839A1
Application number: PCT/EE2021/000002
Authority: WO
Inventors: Kaspar Toi; Indrek Edur
Original assignee: COCO Corporation OÜ
Priority date: 2020-02-17
Filing date: 2021-02-15
Publication date: 2021-08-26

Abstract

The present invention relates to a mutually connectible equipment box conducting the current, to a relevant compatible socket for quick installation, and to a switch for quick installation. The mutually connectible equipment box is equipped at the bottom with three metal current-conducting metal rails which conduct the current and to which a socket or a switch with the relevant design is quick-connected with connection terminals. For a mutual physical connection, the equipment box has mechanical adapters as well as electrical adapters, which conduct electricity to adjacent similar equipment box. Further, the equipment box has adapters for connecting into a power network. These innovative quick connections is the main reason that enables saving time upon installation of the solution, compared to a classical solution, where a cable or cable cores are used for mutual connection.

Description

Quick installation system for electrical equipment

TECHNICAL FIELD OF THE INVENTION

The present invention relates to the field of electrical installations and equipment, specifically to a quick installation system for installing electrical equipment in a building structure. Electrical equipment include sockets and switches for quick installation and relevant suitable equipment boxes for installing inside a wall.

BACKGROUND OF THE INVENTION

Various similar equipment boxes, sockets and switches are known in the art, used in electrical installation operations in walls. The known equipment boxes cannot be installed in a way which would prevent the further need for cabling from an equipment box to the next equipment box in order to connect sockets and switches with neutral, phase and protective earth conductors.

European patent EP2690728B1 discloses an equipment box known in the art The equipment box is designed for installing sockets in various wall types. The equipment box is a cylindrical plastic equipment box closed at one end, which can be mutually connected and fixed to the wall with metal lugs. A disadvantage of this equipment box is the need for additional mutual cabling of such equipment boxes after the installation of the equipment boxes in a wall, which is time-consuming and further requires additional material. Another disadvantage is that line integrity can only be checked after the installation and connection of a socket in the box, not already during the installation of the box.

A similar solution is disclosed in U.S. patent application US5931432A. This is also an equipment box for installing sockets or switches, provided as a plastic cylinder closed at the bottom, which is fixed to the wall with metal clamps. These equipment boxes cannot be connected together.

Sockets enabling mutual lateral connection and conducting the connection are disclosed in European patent EP 1389 811 B1. These are electrical sockets assembled together with the principle of non-recessed installation. The sockets have a connection adapter on both sides and a starting adapter is avaiiable for connecting in line, to which the following sockets are fixed. This solution cannot be used inside a wall, as there is no solution for a wall connection box. The solution has no conductors inside the box installed on the surface. The current Is led from a socket directly to another socket.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a quick insta!iation system for installing electrical equipment in a building structure. The quick installation system of electrical equipment includes equipment boxes, a socket and various switches. The design of the equipment boxes enables installing sockets and switches into the wall without installing any additional cables for their mutual connection. The equipment boxes to be installed into the wali have neutral, phase and protective earth conductors, and special connection clamps, which enable quick connection of sockets and switches with relevant connection terminals. Equipment boxes can be installed in a wail side by side, these are compatible with each other, and a socket or switches can be installed in the equipment boxes as necessary, thus forming a quick installation system for electrical equipment.

Equipment boxes are made of plastic and have a cylindrical shape, whereby three metal rails run through the bottom of the cylinder, with connection elements in the central part of the cylinder for relevant metal connections of a socket or a switch. Adapters are provided at the end of the metal rails for conducting the current from one equipment box to another.

Internal and external adapter is provided for an equipment box for a socket, for connecting the equipment box with a socket with power cable. The equipment box for a switch is connected with a power cable through cable core inputs in the switch equipment box.

A compatible socket or switch for quick installation is installed inside the equipment box. Installation is performed by pressing the terminals located at the bottom of the socket or the switch into connection clamps in relevant equipment box. The socket is made of plastic and equipped at the bottom part with three metal terminals compatible with fixing clamps at the bottom of the equipment box to establish neutral, phase and protective earth connection.

The switch is made as a regular plastic switch with six metal terminals at the bottom part, which are compatible with connection clamps at the bottom of the equipment box to establish neutral, phase and protective earth connection.

BRIEF DESCRIPTION OF THE DRAWINGS

The above mentioned and other features and advantages of the present invention are described more in detail below with reference to appended figures illustrating the preferred embodiments, where

Figure 1 is a sectional view of a mutually connectible equipment box conducting the current and a relevant compatible socket for quick instaliation;

Figure 2 is a perspective view of a mutually connectible equipment box conducting the current; Figure 3 is a top view of a mutually connectible equipment box conducting the current;

Figure 4 is a perspective view of a socket for quick instaliation compatible with a mutuaiiy connectible equipment box conducting the current;

Figure 5 is a top view of a switch for quick installation; Figure 6 is an axonometric view of a switch for quick instaliation, installed in an equipment box for a switch;

Figure 7 is sectional side view of a switch for quick installation, installed in an equipment box for a switch;

Figure 8 is a view of a switch for quick installation, installed In an equipment box for a switch;

Figure 9 is an axonometric view of an internal adapter;

Figure 10 is an axonometric view of an internal adapter;

Figure 11 is an axonometric view of an external adapter:

Figure 12 is an electric diagram of an equipment box and a socket for quick installation;

Figure 13 is an electric diagram of a basic or single-pole switch; Figure 14 is an electric diagram of a doubie-pole switch;

Figure 15 is a diagram of an equipment box for a switch with section lines; Figure 16 is section A-A of an equipment box for a switch;

Figure 17 is section 8-B of an equipment box for a switch; Figure 18 is an electric diagram of a double throw switch;

Figure 19 is an electric diagram of a double pole double throw switch; Figure 20 is an electric diagram of a crossover switch.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 is a view of a mutually connectible equipment box conducting the current 7 for a socket and relevant compatible socket for quick installation 21, The equipment box for a socket 7 is equipped at the bottom with three current- conducting metal rails 1, 2, 3, with three connection clamps 22, 23, 24 in the central part.

The cylindrical equipment box 7 as shown on figure 2 and figure 3 has connection adapters 4, 10 on sides for mutual electrical connection of equipment boxes.

The equipment boxes for a socket 7 can be mutually physically connected with plastic lugs 8 and 9. The socket 21 is fixed to the box with screws through a metal frame 25,

Upon mutual connection of equipment boxes with adapters 4 and 10, phase 1, neutral 2 and protective earth 3 are conducted from one equipment box to another through metal current rails.

The equipment box for a socket 7 has three current rail terminals 36, 37, 38 for connecting with internal adapter 32. Terminal 36 of the phase or neutral current rail of the equipment box 7 compatible with the adapter, terminal 37 of the earth rail of the equipment box 7 compatible with the adapter, and terminal 38 of the phase or neutral current rail of the equipment box compatible with the adapter.

The socket 21 on figure 4 is equipped at the bottom with three metal terminals 22, 23, 24, which ensure neutral, phase and protective earth connection with relevant current-conducting metal rails 1 , 2, 3 at the bottom of the equipment box 7 with the connection damp 20,

Figure 5 to figure 8 illustrate a switch for quick installation 48 together with a currentconducting equipment box 52 for a switch for quick installation. The equipment box 52 for the switch is equipped at the bottom with three metal rails 1, 2, 3. Six connection damps 50 are located in the central part of the equipment box 52. The connection clamp 50 with an L sign is connected with rail 1 through a metal conductor inside the box, and other connection damps 50 are connected with cable core inputs 47 through a metal conductor Inside the box. The cylindrical equipment box 52 for a switch has connection adapters 4 and 10 on sides, through which the equipment boxes are mutually electrically connected, or through which power supply is provided to the box.

The equipment boxes 52 for a switch can be mutually physically connected with plastic lugs 8 and 9. The switch for quick installation 48 is fixed to the box with screws through metal frame 51 .

Upon mutual connection of equipment boxes with adapters 4 and 10, phase 1 , neutral 2 and protective earth 3 is conducted from one equipment box to another through metal current rails.

The equipment box 52 for the switch for quick installation 48 includes cable core input 47, where cable cores cleaned in advance are connected by pushing.

The switch for quick installation 48 is equipped at the bottom with six metal terminals 49, which ensure neutral, phase and protective earth connection with relevant current-conducting metal rails 1 , 2, 3 at the bottom of the equipment box 52 with the connection damp 50- The basic switch has two connection terminals L and LA. The basic switch has a metal frame and a plate base. The basic switch functions with the same principle as any common basic switches known in the art. The switch connects mutually the connection clamps L and LA, enabling the current to exit through the equipment box for the switch into a lamp. Three current rails 1, 2, 3 pass through the bottom of the equipment box 52 for the switch for quick installation - conductors for phase L, neutral N and earth PE. The current rails 1 2, 3 are enclosed by dielectric plastic and thus insulated from each other and third conductors. Six connection clamps 50 are located above the current rails, with signs L, LA, LB, LC, LD, LE. The connection clamp L is electrically connected with phase current rail L. Cable input and output terminals 47 are located on the left and right sides of the connection clamp 50, The connection clamp LA is electrically connected with the terminal LA. The connection clamp LB is electrically connected with the terminal LB. The connection clamp LC is electrically connected with the terminal LC. The connection clamp LD is electrically connected with the terminal LD. The connection clamp LE is electrically connected with the terminal LE. Four PE terminals are located in the switch equipment box, which are electrically connected with the earth PE current rail. Four N terminals are located in the equipment box 52 for the switch for quick installation, which are electrically connected with the neutral N current rail. Furthermore, the equipment box for the switch includes X terminals, which are mutually electrically connected. These are used for run-through connections to connect mutually the cores of entering and exiting cables. All terminals are designed for connecting cable cores in such way that cable core is inserted into the terminal and then pushed into the terminal until core insulation. There is a spring terminal inside the terminal, which pushes against the inserted cable core, while locking it against pulling out. Cable core can be pulled out from the terminal with spring terminal by repeated simultaneous turning to both sides around its axis.

The equipment box for a socket 7 and the equipment box 52 for a switch illustrated in Figures 1 to 8 have similar outer appearance and are mutually connected in a similar way.

Adapters 4 and 10 of the equipment boxes 7 and 52 designed for mutual connection of the equipment boxes 7 and 52 are provided as female plug 10 and male plug 4, where the connection of three conductors (phase, neutral and earth) takes place. Figures 9 and 10 illustrate the internal adapter 32. The internal adapter is suitable only for the connection of the equipment box for a socket 7 with a power cable. Internal adapter 32 has three apertures 26, 27, 28 for the power connection of the equipment box for a socket 7 and three apertures 29, 30, 31 for connecting a power cable.

Aperture 26 is provided for connecting the phase or neutral current rail of the equipment box with current rail 35 of the adapter. Aperture 27 is provided for connecting the earth rail of the equipment box with earth rail 34 of the adapter.

Aperture 28 is provided for connecting the phase or neutral current rail of the equipment box with current rail 33 of the adapter. Aperture 29 is provided for connecting the phase or neutral core of the input cable with current rail 35 of the adapter. Aperture 30 is provided for connecting the earth core of the input cable with earth rail 34 of the adapter. Aperture 31 is provided for connecting the phase or neutral core of input cable with current rail 33 of the adapter.

Figure 11 illustrates an external adapter 39, which is suitable for the connection of the equipment box for a socket 7 and the equipment box 52 for a switch with a power cable 43, 44. The external adapter 39 has a cable phase or neutral connection terminal 40, a cable earth connection terminal 41 , a cable phase or neutral connection terminal 42, input or output cable 43, input or output cable 44, input or output cable cores 45 and connection plug 46 for connecting the external adapter 39 with the equipment box 7 or the equipment box 52.

Figure 12 illustrates the electric diagram of the socket 21 and the equipment box for a socket 7. Equipment boxes are pushed together with a mutual adapter 4 and 10, ensuring electrical connection between the equipment boxes. Electrical connection for the equipment boxes is provided with relevant current input adapters 32 or 39. The equipment box has an internal adapter 32 as well as an external current adapter

39. Figure 13 illustrates a connection diagram of a basic switch, where an output cable to a lamp is brought into the equipment box through a passage in the wall of the equipment box. The wire of the output cable is connected to the output terminal LA. A neutral wire of the output cable leading to the lamp is connected to a freely chosen input terminal N. The earth core of the output cable leading to the lamp is connected to a freely chosen input terminal PE. If it is necessary to output supply from the box to the next box or a junction box located at a distance, the cable of output supply is connected in the box with the same principle as input supply cable.

Figure 14 illustrates a connection diagram of a double pole switch. Output cables to a lamp are brought into the equipment box through a passage in the wail of the equipment box. The phase core of the first output cable is connected to the output terminal LA. The phase core of the second output cable is connected to the output terminal LC. The neutral N cores of the first and second output cables to a lamp are connected to freely chosen input-output terminals N. The earth PE cores of the first and second output cables to a lamp are connected to freely chosen input-output terminals PE. If it is necessary to output supply from the box to a junction box or the next equipment box located at a distance, the cable of output supply is connected in the box with the same principle as an input supply cable.

Figure 15 illustrates the top view of an equipment box for a switch, with indicated section lines A and B.

Figure 16 illustrates section A-A and figure 17 illustrates section B-B of an equipment box for a switch. The figures of sections illustrate internal current conductors of the box from terminals to connection clamps.

Figure 18 illustrates a connection diagram of a double throw switch. Output cable to a lamp is brought into the equipment box through a passage in the wall of the equipment box. The first (e.g. black) core of the output cable to the next double throw switch is connected to the input-output terminal LA. The second (e.g. gray) core of the output cable to the next double throw switch is connected to the input- output terminal LB, The third (e.g. brown) core of the output cable to the next double throw switch is connected to the input-output terminal X1. The phase core of the output cable to a lamp is connected to the input-output terminal X2. The neutral core of the output cable to a lamp is connected to a freely chosen input-output terminal N. The earth core of the output cable to a lamp is connected to a freely chosen input- output terminal PE, If it is necessary to output supply from the box to a junction box or the next equipment box located at a distance, the cable of output supply is connected in the box with the same principle as input supply cable. In the next double throw switch, the black core of the input cable from the previous double throw switch is connected to the terminal LD, the gray core to the terminal LC, and the brown core to the terminal LE.

Figure 19 illustrates a connection diagram of a double throw switch and a double pole double throw switch. Output cable to a lamp is brought into the equipment box through a passage in the wall of the equipment box. The first (e.g. black) core of the output cable to the next double throw switch is connected to the input-output terminal LA. The second (e.g. gray) core of the output cable to the next double throw switch is connected to the input-output terminal LB. The third (e.g. brown) core of the output cable to the next double throw switch is connected to the input-output terminal X1. The phase core of the output cable to a Lamp is connected to the input- output terminal X2. The neutral core of the output cable to a lamp is connected to a freely chosen input-output terminal N, The earth core of the output cable to a lamp is connected to a freely chosen input-output terminal PE. If it is necessary to output supply from the box to a junction box or the next box located at a distance, the cable of output supply is connected in the box with the same principle as input supply cable. In the next double pole double throw switch, the black core of the input cable from the previous double throw switch is connected to the terminal LA, the gray core to the terminal LB, and the brown core to the terminal X. The black core of the output cable from the double pole double throw switch to the next double pole double throw switch or double throw switch is connected to the terminal LD, the gray core to the terminal LE, and the brown core to the terminal X. In the last double throw switch, the black core of the input cable from the previous switch is connected to the terminal LD, the gray core to the terminal LE, and the brown core to the terminal LC.

Figure 20 illustrates a connection diagram of a double pole double throw switch. Output cables to a lamp are brought into the equipment box through passages in the wall of the equipment box. The first (e.g. black) core of the first output cable to the next double pole double throw switch is connected to the input-output terminal LA. The second (e.g. gray) core of the first output cable to the next double pole double throw switch is connected to the input-output terminal LB. The third (e.g. brown) core of the first output cable to the next double throw switch is connected to the input-output terminal X1. The first (e.g, black) core of the second output cable to the next double pole double throw switch is connected to the input-output terminal LE. The second (e.g, gray) core of the second output cable to the next double pole double throw switch is connected to the input-output terminal LD. The third (e.g. brown) core of the second output cable to the next double throw switch is connected to the input-output terminal X2.

The phase core of the output cable to the first lamp is connected to the input-output terminal X1. The third (e.g. brown) core of the first output cable to the next double throw switch is connected to the input-output terminal X1. The phase core of the output cable to the first lamp is connected to the input-output terminal X1. The neutral core of the output cable to the first lamp is connected to a freely chosen input-output terminal N. The earth core of the output cable to the first lamp is connected to a freely chosen input-output terminal PE, The phase core of the output cable to the second lamp is connected to the input-output terminal X2, The neutral core of the output cable to the second lamp is connected to a freely chosen input- output terminal N. The earth core of the output cable to the second lamp is connected to a freely chosen input-output terminal PE. If it is necessary to output supply from the box to a junction box or the next equipment box located at a distance, the cable of output supply is connected in the box with the same principle as input supply cable. In the second double pole double throw switch, the black core of the first input cable from the first double pole double throw switch is connected to the terminal LA, the gray core to the terminal LB, and the brown core to the terminal L. In the second double pole double throw switch, the black core of the second input cable from the first double pole double throw switch is connected to the terminal LD, the gray core to the terminal LE, and the brown core to the terminal LC.

Equipment boxes 7 and 52 are installed into a Sight and hollow wall with fixing lugs or glued into the pits made in a solid wall input power supply can be provided to the equipment boxes 7 and 52 from an adjacent equipment box 7, 52 of the same system, connected into the power network.

As the mutual adapters 4, 10 of the equipment boxes 7, 52 are universal in the system, it is possible to connect mutually the equipment box for a socket and the equipment box for switches, if necessary, and these operate as a system in a single circuit.

If an adjacent box of relevant system is Sacking, supply can be provided through an externa! adapter 39. Third option is to provide supply directly with a cable. Input and output cables are brought into the box through the passages 4 7 in the wall of the box, which can be opened with a sharp object, input cables are stripped of external double insulation. Insulation is stripped from the phase core of the input cable in the extent of approximately 5-7 mm and the wire without insulation is pushed into the input terminal L. Insulation is stripped from the neutral wire of the input cable in the extent of approximately 5-7 mm and the wire without insulation is pushed into a freely chosen input terminal N, Insulation is stripped from the earth core of input cable in the extent of approximately 5-7 mm and the wire without insulation is pushed into a freely chosen input terminal PE.

Alter making the connections, the equipment box 7, 52 is dosed with a dust cover to protect it from paint and other impacts during painting, in the final stage of the construction work, the dust cover is removed and the socket for quick installation 21 or basic switch 48 is connected by pushing the connection terminals located on its casing into the connection clamps 22, 23, 24 or 50 located in relevant equipment box. If necessary', the socket 21 or switch 48 for quick installation is_. leveled and then fixed with screws through its metal plate into the screw holes located in the casing of the equipment box for a switch. Then, a frame is installed on the top (around), which is fixed with a fixing frame. Finally, the switch is covered with a cover plate, which is installed by pushing. The plastic cover 20 of a socket is fixed with a centra! screw.

Claims

1. Quick installation system for electrical equipment, comprising an equipment box for installation in a wall, a socket compatible with the equipment box (7), a switch compatible with the equipment box (52), characterized in that the quick installation system further comprises an internal adapter (32) of the equipment box (7) and an external adapter (39) of the equipment box (7, 52), with which the equipment box (7) is connected into the power supply network; where the equipment box (7, 52) is equipped at the bottom with three metal rails (1 ,

2, 3) extending into the adapter (4, 10) of the equipment box (7, 52), whereby the equipment boxes (7, 52) are mutually connected with a current-conducting adapter

(4, 10) of the equipment box (7, 52), and where the equipment box (7, 52) is equipped in the central part with three to six connection clamps (20, 50); where the mentioned socket is a socket for quick installation (21), equipped at the bottom part with three connection terminals (22, 23, 24), which are conductively connected with three connection damps (20) at the bottom of the equipment box

(7); where the mentioned switch is a switch for quick installation (48), equipped at the bottom part with six connection terminals (49), which are conductively connected with six connection clamps (50) at the bottom of the equipment box (52).

2, The system according to claim 1, characterized in that the metal rails (1, 2, 3) at the bottom of the equipment box (7) are conductively connected with three connection clamps (20) at the central part of the equipment box (7).

3. The system according to claim 1 , characterized in that cable core inputs (47) are provided at the bottom of the equipment box (52).

4. The system according to claims 1 and 3, characterized in that the equipment box (52) is equipped with six connection clamps (50), where (L) is conductively connected with the metal rail (1) and other connection clamps (50) are conductively connected with cable core inputs (47).

5. The system according to claim 1, characterized in that the socket for quick installation (21) has a metal frame (25).

6. The system according to claims 1 and 5, characterized in that the socket for quick installation (21) is fixed to the equipment box (7) through the metal frame (25) with a screw.

7, The system according to claim 1, characterized in that the switch for quick installation (48) has a metal frame (51).

8. The system according to claims 1 and 7, characterized in that the switch for quick installation (48) is fixed to the equipment box (48) through the metal frame (51) with screws.

9. The system according to claims 1 and 7-8, characterized in that the switch for quick installation (48) is basic or single pole switch, double pole switch, double throw switch, double pole double throw switch, crossover switch.

10. The system according to claim 1, characterized in that adapters (4, 10) are provided at both ends of the three metal rails (1, 2, 3) of the equipment box (7, 52), which are conductively connected with next equipment box (7, 52).