CN204514979U - Use the electric energy meter attachment plug of C type internal-expansion type turn - Google Patents

Abstract

The utility model relates to a connection plug for an electric energy meter using a C-type internal expansion spring coil, which is characterized in that it includes: a plug, the upper part of which is a plurality of metal sheets, and the lower part is an electrical connection end; the C-type internal expansion spring coil , correspondingly arranged in the plug, located within the length of each of the metal sheets, and the cross-section of the C-shaped internal expansion spring coil is C-shaped. When installing, the plug of the utility model can be directly inserted into the terminal of the electric energy meter, thereby fundamentally changing the existing screw crimping method, greatly improving the efficiency of on-site installation, and improving the production and measurement and detection links. s efficiency.

Description

Electric energy meter connection plug using C-type internal expansion spring coil

technical field

The utility model belongs to a low-voltage power distribution equipment, in particular to an electric energy meter connection plug with a C-shaped internal expansion spring coil for easy connection.

Background technique

A large number of electric energy meters need to be installed in related equipment in low-voltage complete sets such as electric energy metering boxes and integrated power distribution cabinets, and a large number of electric energy meters need to be electrically installed and connected in the production and measurement of electric energy meters.

At present, the most traditional method is to directly or indirectly insert the wire connected to the electric energy meter into the terminal button seat of the electric energy meter through a copper rod, and then use screw crimping to ensure the electrical connection of the electric energy meter. Installed, such as the plug-in terminal used in the application number 201410088434.1, but it is easy to cause the electrical connection to be loose, and the pull-out piece is easy to detach from the terminal (button seat terminal) after repeated use.

Since a large number of electric energy meters are required to be installed in the field of low-voltage complete sets and the production and measurement of electric energy meters, and the installation environment is generally limited by the construction site, the efficiency of the current installation method of electric energy meters is relatively low. This kind of problem exists, and has not solved these problems well at present, so it is really necessary to make improvement.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a power meter connection plug using a C-shaped internal expansion spring coil, so that a large number of power meters can be quickly installed to greatly improve the field installation efficiency of the power meter.

The technical scheme of the utility model is as follows:

A connection plug for an electric energy meter using a C-shaped internal expansion spring coil, including:

Plug, the upper part of which is a number of metal sheets, the lower part of which is an electrical connection terminal;

The C-shaped internal expansion spring ring is correspondingly arranged in the plug, located within the length of each of the metal sheets, and the cross section of the C-shaped internal expansion spring ring is C-shaped.

In the electric energy meter connection plug using a C-shaped internal expansion spring coil, there are two or more metal sheets, and there is a small distance between each two adjacent metal sheets.

In the electric energy meter connection plug using the C-shaped internal expansion spring coil, a transition surface is formed on the upper end of each metal sheet.

In the electric energy meter connection plug using a C-shaped internal expansion spring coil, the transition surface at the top of each metal sheet is an arc surface or a tangent surface inclined to the axis of the tubular structure.

The above electric energy meter connection plug using C-shaped internal expansion spring coil, the plug is processed by a metal pipe with good electrical conductivity, the upper part of the metal pipe is processed into a number of metal sheets with micro-distance intervals, and the lower part is processed into a U shape. The electrical connections of the structure.

The beneficial effects of the utility model are:

(1) When installing, the plug of the utility model can be directly inserted into the terminal of the electric energy meter, thereby fundamentally changing the existing screw crimping method, greatly improving the efficiency of on-site installation, and improving the production and manufacturing efficiency. The efficiency of the measurement and testing link;

(2) The plug of this utility model is a tubular structure composed of several metal sheets. After being installed in place, each metal sheet is in contact with the terminal, and cooperates with the C-shaped internal expansion spring coil installed inside it to make each plug connected to the wiring. After the terminal, the C-type internal expansion spring ring is compressed and deformed to generate elastic potential energy. This elastic potential energy makes the metal sheet fully contact with the terminal and realizes electrical connection, which further ensures that the plug will not be separated from the terminal of the electric energy meter. installation quality;

(3) This type of C-type internal expansion spring coil is more convenient to process, and can be made of spring steel sheet, and its cost can be greatly reduced.

Description of drawings

Fig. 1 is a schematic side view of the utility model;

Fig. 2 is a B-B direction sectional view of Fig. 1;

Fig. 3 is a schematic structural view of the utility model connected to the terminal of the electric energy meter;

Fig. 4 is a top view after the plug of the utility model is connected;

Fig. 5 is a top view of the C-shaped internal expansion coil of the present invention.

In the picture:

1-plug; 101-sheet metal; 102-top; 103-transition surface; 104-bottom;

2- Macro interval;

3-Wiring terminal of electric energy meter;

4-C type internal expansion spring ring;

5- Electrical connection terminal;

T-notch.

Detailed ways

The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the invention may be referred to herein by the term "utility model", individually or collectively, for convenience only and not to automatically limit if more than one utility model is in fact disclosed The scope of this application is any single utility model or utility model concept.

As shown in Figures 1 to 5, which are schematic diagrams of the utility model, the electric energy meter connection plug using an internal expansion spring described in the utility model mainly includes a plug 1 and a C set in the plug 1. Type internal expansion spring coil 4.

The upper end of the plug 1 is composed of several metal sheets 101 for connecting with the terminals of the electric energy meter. There are 2 or more metal sheets, and there is a small distance between each two adjacent metal sheets. The lower end is an electrical connection end 5, which is used for crimping or screwing electrical connection wires, so that the electric energy meter terminal can be electrically connected with the outside. In this embodiment, the plug 1 is processed by a metal pipe with good conductivity. The upper end of the metal pipe is processed into a number of thin metal sheets 101 with micro-spaces 2, and the lower end is processed into a U-shaped electrical connection end 5.

The number of thin metal sheets 101 of the plug 1 can be set according to the specific situation. The C-shaped internal expansion spring ring 4 is arranged on the upper part of the plug 1. The C-shaped internal expansion spring ring 4 has a certain length H. There is a gap, and its cross-section is C-shaped, as shown in Figure 5, which is a top view of the C-shaped internal expansion spring coil 4, and combined with Figure 4, it is the innermost (with a filling layer) in the plan view of Figure 4 It is a C-shaped internally expanding spring ring 4, and its length is set accordingly according to the type of different meter heads, so that its position is within the length range of the metal sheet 101, preferably close to the inner wall of the top 102 of the metal sheet 101 Among them, as shown in Figure 2 and Figure 3, it is arranged at the lower position of the plug 1, and the C-shaped internal expansion spring coil 4 can be compressed when plugged in, so that the C-shaped internal expansion spring coil 4 The slit T is reduced and has a certain elastic potential energy, so as to generate an external extrusion tendency for each of the metal sheets 101 .

There is a micro-distance interval 2 between every two adjacent metal sheets 101. When the plug 1 formed by the metal sheets is plugged into the terminal, each metal sheet 101 can shrink inward along the radial direction of the tubular structure, and at the same time During the plugging process, the micro-distance 2 between two adjacent metal sheets 101 gradually decreases, that is, each metal sheet 101 of the plug 1 will have a slight deformation during the plugging process to adaptably connect to the terminal of the electric energy meter.

During the plugging process, the C-shaped internal expansion spring ring 4 in the plug 1 is compressed and has compressed elastic potential energy. The elastic potential energy of the spring coil 4 makes the thin metal sheets 101 of the plugs 1 expand outwards, so that the thin metal sheets 101 closely fit with the terminals of the electric energy meter.

In specific use, the top 102 of each metal sheet 101 of the plug 1 is formed with a transition surface 103, and the transition surface 103 of each metal sheet 101 can be a circular arc surface or a tangent surface inclined to the axis of the tubular structure. During the installation process, it is only necessary to directly insert each plug into the connection terminal of the electric energy meter. After installation, each C-shaped internal expansion spring coil 4 in the plug expands outward so that each metal sheet 101 of each plug 1 is connected to the connection terminal (button) The tight fit between the plug 1 can also make the outer diameter of the plug 1 slightly larger than the inner diameter of the electric energy meter terminal. Cooperating with the transition surface 103, it is convenient to insert the plug 1 into the electric energy meter terminal. Tight fit between terminals.

The above-mentioned embodiments are only examples for clearly illustrating the creation of the utility model, rather than limiting the specific implementation of the utility model. In order to clearly illustrate the combination of the various components, the various illustrative components and their connections are described above in general around their functions. As for which function is achieved by the combination of components, it depends on the specific application and Design constraints imposed on the entire device. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. Any obvious changes or modifications derived from the spirit and principle of the present utility model are still within the scope of protection of the present claims.

Claims (5)

1. use an electric energy meter attachment plug for C type internal-expansion type turn, it is characterized in that, include:

Plug, its top is some sheet metals, and its underpart is electrical connection terminal;

C type internal-expansion type turn, is arranged in described plug accordingly, be positioned at and be within the length of each described sheet metal place, and the xsect of this C type internal-expansion type turn is C-shaped.

2. the as claimed in claim 1 electric energy meter attachment plug using C type internal-expansion type turn, it is characterized in that, described sheet metal is more than 2 and 2, often has microspur interval between sheet metal described in adjacent two.

3. the electric energy meter attachment plug using C type internal-expansion type turn as claimed in claim 1 or 2, it is characterized in that, the upper end of each described sheet metal is all formed with a transition face.

4. the as claimed in claim 3 electric energy meter attachment plug using C type internal-expansion type turn, is characterized in that, the tangent plane that the transition face at each described sheet metal top is arc surface or tilts to the axial line of tubular structure.

5. the electric energy meter attachment plug using C type internal-expansion type turn as claimed in claim 1, it is characterized in that, described plug processes by conducting electricity good metal pipe material, some sheet metals with microspur interval are processed on the top of metal pipe material, and bottom is processed as the electrical connection terminal of U-shaped structure.