CN204314353U - Use the electric energy meter attachment plug of internal-expansion type spring - Google Patents

Abstract

The utility model relates to an electric energy meter connection plug using an internal expansion spring, which includes a plug and a circular internal expansion spring arranged in the plug. The upper part of the plug is a plurality of metal sheets, and the lower part is an electrical connection end. The plug A transition surface is formed on the top of each metal sheet. The beneficial effects of the utility model are: the plug of the utility model can be directly inserted into the connection terminal of the electric energy meter during installation, thereby fundamentally changing the existing screw crimping method and greatly improving the installation efficiency on site.

Description

Energy meter connection plug with internal expansion spring

technical field

The utility model belongs to a low-voltage power distribution equipment, in particular to a connection plug for an electric energy meter with an internal expansion spring which is convenient for 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.

Contents of the invention

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

The technical scheme of the utility model is as follows:

A connection plug for an electric energy meter using an internal expansion spring, comprising:

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

Circular internal expansion springs are correspondingly arranged in the plug, and are located within the length of each of the thin metal sheets.

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

In the electric energy meter connection plug using an internal expansion spring, the transition surface at the top of each thin 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 an internal expansion spring, the plug is processed by a metal pipe with good conductivity. connection end.

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 the utility model is a tubular structure composed of two or more metal sheets. After being installed in place, each metal sheet is in contact with the terminal, and cooperates with the circular internal expansion spring arranged inside it to make each plug connect to the terminal. After being inserted into the terminal, the circular internal expansion spring 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. The installation quality is guaranteed.

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 bottom view of the plug of the present invention after being connected.

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-circular internal expansion spring;

5- Electrical connection terminal.

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 4, 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 circular ring arranged in the plug 1. Shaped internal expansion spring 4.

The upper end of the plug 1 is composed of several metal sheets 101, which are used to connect with the terminals of the electric energy meter. To achieve electrical connection, in this embodiment, the plug 1 is processed from a metal pipe with good electrical conductivity, the upper end of the metal pipe is processed into a number of metal sheets with a small interval, and the lower end is processed into a U-shaped electrical connection end .

The number of thin metal sheets 101 of the plug 1 can be set according to the specific situation, generally 2 or more (at least 2), and the circular internal expansion spring 4 is arranged on the top of the plug 1, its The position is within the length range of the metal sheet 101, preferably in the inner wall of the top 102 close to the metal sheet 101, and the circular internal expansion spring 4 can be compressed and have elastic potential energy when plugged in, To produce 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 mentioned above, and when the plug 1 formed by the metal sheets is plugged into the terminal, each metal sheet 101 can shrink inwardly along the radial direction of the tubular structure, At the same time, during the plugging process, the micro-distance interval 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 adapt to the connection terminal of the electric energy meter. .

During the plugging process, the circular internal expansion spring 4 in the plug 1 is compressed and stores compressed elastic potential energy. After all the plugs 1 are connected to the terminals of the electric energy meter, the circular internal expansion spring The elastic potential energy of 4 makes the thin metal sheets 101 of the plugs 1 expand outwards, so that the thin metal sheets 101 tightly 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 circular inward expansion spring 4 in the plug expands outward so that each metal sheet 101 of each plug 1 is connected to the connection terminal (button seat) Tight fit between the terminals) can also make the outer diameter of the plug 1 slightly larger than the inner diameter of the electric energy meter terminal, and cooperate with the transition surface 103, while making it convenient for the plug 1 to be inserted into the electric energy meter terminal, it can also realize the connection with the electric energy meter. 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. A watt-hour meter connection plug using an internal expansion spring, characterized in that it includes: Plug, the upper part of which is a number of metal sheets, the lower part of which is an electrical connection terminal; Circular internal expansion springs are correspondingly arranged in the plug, and are located within the length of each of the thin metal sheets. 2. The electric energy meter connection plug using an internal expansion spring as claimed in claim 1, wherein there are 2 and more than 2 said metal sheets, and there is a micro-distance between each adjacent two said metal sheets. interval. 3. The electric energy meter connection plug using an internal expansion spring according to claim 1 or 2, wherein a transition surface is formed on the upper end of each of the metal sheets. 4. The electrical energy meter connection plug using an internal expansion spring as claimed in claim 3, wherein the transition surface at the top of each said metal sheet is a circular arc surface or a tangent surface inclined to the axis of the tubular structure. 5. The electric energy meter connection plug using an internal expansion spring as claimed in claim 1, wherein the plug is processed from a metal pipe with good electrical conductivity, and the upper part of the metal pipe is processed into a number of metal pipes with macro intervals. The thin sheet, the lower part of which is processed into an electrical connection terminal in a U-shaped structure.