CN103163342B - Electric energy meter electric source connecting box - Google Patents

Abstract

The invention discloses a connection box for a power supply of an electric energy meter, which includes an insulating fixing frame, which is provided with several groups of connecting terminals, and the connecting terminals include: an upper fixed electrode; a plurality of upper fixing screws screwed into the upper fixed electrode; a lower fixed electrode; Screw in multiple incoming wire fixing screws of the lower fixed electrode; connecting piece, which is provided with an upper through hole and a lower through hole; upper screw, inserted into the upper through hole and screwed into the upper fixed electrode fixing connecting piece; lower screw, inserted into the lower through The hole is screwed into the lower fixed electrode to fix the connecting piece; there is an insulating layer between the connecting piece and the upper fixed electrode and the lower fixed electrode, and the insulating layer is integrated with the insulating fixing frame; limit block. The upper through hole and the lower through hole of the connecting piece are larger than the diameters of the threaded parts of the upper screw and the lower screw. The invention has the beneficial effects of safe and reliable wiring, high work efficiency and convenient use.

Description

Energy meter power connection box

technical field

The invention relates to a power supply connection box for an electric energy meter.

Background technique

In the prior art, the structure of the power connection box of the electric energy meter is to directly fix the connecting piece (as shown in Figure 1) on the fixed electrode with the fixing screw, and the connecting piece and the fixed electrode are tightly pressed and conductive. , usually by loosening the upper and lower fixing screws at the same time, and moving the connecting piece. In order to prevent the connecting piece from falling naturally under the action of gravity and then connect the circuit, one hand needs to use an insulating tool to lift the connecting piece at the corner of the connecting piece, and the other hand Tighten the upper fixing screw with only one hand. After the wiring is completed, the upper fixing screw must be loosened to allow the connecting piece to fall naturally, and then tighten the upper and lower fixing screws. The following problems exist in the prior art: there is a potential safety hazard. , There is a risk of electric shock due to the natural fall of the connection piece; when wiring, there are many movements, which affects work efficiency;

Contents of the invention

In order to overcome the above disadvantages, the present invention proposes a power supply connection box for an electric energy meter, which improves performance through structural improvement.

Technical scheme of the present invention is:

A power connection box for an electric energy meter, comprising:

An insulating fixing frame, which is provided with several sets of wiring terminals, the wiring terminals include: upper fixed electrodes; multiple upper fixing screws screwed into the upper fixed electrodes; lower fixed electrodes; multiple incoming line fixing screws screwed into the lower fixed electrodes; The connection piece is provided with an upper through hole and a lower through hole; the upper screw is inserted into the upper through hole and screwed into the upper fixed electrode fixed connection piece; the lower screw is inserted into the lower through hole and screwed into the lower fixed electrode fixed connection piece;

An insulating layer is provided between the connecting piece and the upper fixed electrode and the lower fixed electrode, and the insulating layer is integrated with the insulating fixing frame;

When the upper screw is loosened, the electrical connection between the upper screw and the connecting piece is disconnected, or, when the lower screw is loosened, the electrical connection between the lower screw and the connecting piece is disconnected.

It should be noted that the diameter of the upper through hole and the lower through hole must be larger than the diameter of the upper screw and the lower screw with a margin. Choosing a reasonable position can ensure that when the upper screw and the lower screw are loosened, the connecting piece and the upper screw There is no contact with the lower screw, that is to say, there is no electricity. When the upper screw and the lower screw are tightened, the connecting piece is in electrical circuit communication with the upper fixed electrode and the lower fixed electrode.

The insulating fixing frame is provided with a limit block that limits the up, down, left, and right movement of the connecting piece.

The upper and lower ends of the connecting piece are arc-shaped, and the limit block includes an upper limit block and a lower limit block, and the upper limit block and the lower limit block are also provided with arc shapes corresponding to the connecting piece.

The upper limit block and the lower limit block are integrated with the insulating fixing frame.

The upper through hole and the upper screw of the connecting piece are set on the same circle center, and the lower through hole and the lower screw are also set on the same circle center. The diameter of the upper through hole and the lower through hole is 2-2.5 mm larger than that of the upper screw and the lower screw.

It should be noted that the diameter of the upper screw and the lower screw refers to the diameter of the threaded part, and the diameter of the head of the upper screw and the lower screw is larger than the diameter of the upper through hole and the lower through hole, so that when the upper screw and the lower screw are tightened, ensure that It is in electrical communication with the connecting piece.

The invention has the beneficial effects of safe and reliable wiring, high work efficiency and convenient use.

Description of drawings

Fig. 1 is a schematic structural diagram of a connecting piece in the prior art.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

FIG. 3 is a side sectional view of FIG. 2 .

Fig. 4 is a side sectional view of the insulating fixing frame in Fig. 2 .

Detailed ways

Now in conjunction with accompanying drawing, the present invention will be further described:

As shown in Fig. 2 to Fig. 4, the insulating fixing frame 2 is provided with several groups of connecting terminals, and the connecting terminals include: an upper fixed electrode 110; a plurality of upper fixing screws 11 screwed into the upper fixed electrode 110; a lower fixed electrode 120 Screw in a plurality of lower fixing screws 12 of the lower fixed electrode 120; the connecting piece 4 is provided with an upper through hole and a lower through hole; an upper screw 31 is inserted into the upper through hole and screwed into the upper fixed electrode 110 to fix the connecting piece 4; The lower screw 32 is inserted into the lower through hole and screwed into the lower fixed electrode 120 to fix the connecting piece 4;

An insulating layer 22 is provided between the connecting piece 4 and the upper fixed electrode 110 and the lower fixed electrode 120, and the insulating layer 22 is integrated with the insulating fixing frame 2;

When the upper screw 31 is loosened, the electrical connection between the upper screw 31 and the connecting piece 4 is disconnected, or, when the lower screw 32 is loosened, the electrical connection between the lower screw 32 and the connecting piece 4 is disconnected.

The insulating fixing frame 2 is provided with a limiting block that restricts the movement of the connecting piece 4 up and down, left and right, specifically, the upper and lower ends of the connecting piece 4 are arc-shaped, and the limiting block includes an upper limiting piece 21 and a lower limiting piece 23, The upper limit block 21 and the lower limit block 23 are also provided with an arc shape corresponding to the connecting piece 4, and the connecting piece 4 is clamped by the arc shape so that it cannot move up, down, left, and right.

The upper limit block 21 and the lower limit block 23 are integrated with the insulating fixing frame 2 .

The upper through hole of the connecting piece 4 is set with the same circle center as the upper screw 31, and the lower through hole and the lower screw 32 are also set with the same circle center. The diameter of the upper through hole and the lower through hole is greater than the diameter of the upper screw 31 and the lower screw 32 by 2-2.5mm , there is a gap of more than 1mm on one side, to ensure that when the upper screw 31 or the lower screw 32 is loosened, the upper fixed electrode 110 and the lower fixed electrode 120 are powered off.

When in use, as long as any one of the upper screw 31 and the lower screw 32 is loosened, the upper fixed electrode 110 and the lower fixed electrode 120 are powered off, and then tightened after the wiring is completed. Obviously, compared with the prior art, there is no need to loosen the two screws And move connecting piece, do not need two hands to operate simultaneously, have solved the operation safety problem under the electrified state, have also improved work efficiency simultaneously, in addition, the shape of connecting piece 4 is simpler than the connecting piece of prior art, newly increased insulating layer 22, The upper limit block 21 and the lower limit block 23 are molded with the insulating fixing frame 2 at one time, which is convenient for processing, and the present invention has the characteristics of safety, convenience and quickness.

Claims (5)

1. an electric energy meter electric source connecting box, comprising:

Insulation fixed mount (2), it is provided with some groups of connection terminals, and this connection terminal comprises: upper fixed electorde (110); Be screwed into the multiple upper gib screw (11) of fixed electorde (110); Lower fixed electorde (120); Be screwed into multiple inlet wire gib screws (12) of lower fixed electorde (120); Brace (4), which is provided with through hole and lower through-hole; Screwing (31), in insertion, through hole is screwed into fixed electorde (110) and is fixedly connected with sheet (4); Lower screw (32), insertion lower through-hole is screwed into lower fixed electorde (120) and is fixedly connected with sheet (4);

It is characterized in that:

Brace (4) and be provided with insulation course (22) between upper fixed electorde (110) and lower fixed electorde (120), this insulation course (22) is integrated with insulation fixed mount (2);

When screwing (31) is unscrewed, screwing (31) is electrically connected with brace (4) and disconnects, or when screw (32) is unscrewed instantly, lower screw (32) is electrically connected with brace (4) and disconnects.

2. electric energy meter electric source connecting box as claimed in claim 1, is characterized in that: described insulation fixed mount (2) is provided with the limited block that restriction brace (4) moves up and down.

3. electric energy meter electric source connecting box as claimed in claim 2, it is characterized in that: the two ends up and down of described brace (4) are circular arc, described limited block comprises upper limit position block (21) and lower position block (23), and upper limit position block (21) and lower position block (23) are also provided with the circular arc corresponding with brace (4).

4. electric energy meter electric source connecting box as claimed in claim 3, is characterized in that: described upper limit position block (21) and lower position block (23) are integrated with insulation fixed mount (2).

5. the electric energy meter electric source connecting box as described in claim 1,2,3 or 4, it is characterized in that: upper through hole and screwing (31) concentric of described brace (4) are arranged, lower through-hole and lower screw (32) also concentric are arranged, and the diameter of upper through hole, lower through-hole is greater than the diameter 2-2.5mm of screwing (31), lower screw (32).