CN204680839U - Electric power snap joint - Google Patents

Abstract

The utility model discloses a quick connector for electric power, which comprises a connector body and a lock nut; one end of the connector body is an electric terminal connected to a transformer terminal, and the other end is a terminal for connecting a wire. A number of pressing pieces are provided at intervals; the inner wall of the lock nut is provided with an internal thread that cooperates with the external thread on the joint body and a pressing part suitable for pressing the pressing piece; the terminal port faces away from The direction of the central axis expands to form a bell mouth shape, and a compression screw for further compressing the wire is provided on the side wall of the connector body, and a wire pressing piece is inserted in the connector body corresponding to the compression screw. When the joint of the utility model is used, the electrical performance is good, and the wires will not be damaged, so the utility model has a good use effect.

Description

Power quick connector

technical field

The utility model relates to an electric quick connector, which belongs to the field of structural design of electric transformer wiring fittings.

Background technique

Power quick connectors are suitable for connecting pole-mounted transformers of 10kV and below with overhead insulated wires to fix and conduct the overhead insulated wires.

Traditional transformers are connected to overhead insulated wires with oil change clamps or terminal blocks. The oil converter clamp has the disadvantages of large size, high price, and the casting process used in the clamp body is easy to break; while the terminal requires a special crimping tool, and it is inconvenient to install and cannot be reused.

In this regard, the patent document CN203434274U discloses an energy-saving quick lock joint, including: a joint body and a locking sleeve, the joint body includes a connecting plate with a through hole and a connecting plate connected to one end of the connecting plate. The wiring tube of the lumen, the tube wall of the wiring tube is provided with at least two shrinkage grooves arranged in the axial direction, and the outer wall of the wiring tube is provided with an external thread and an external stepped structure; the locking sleeve has a tube The inner wall of the cavity is provided with an internal thread mated with the outer thread and an inner stepped structure mated with the outer stepped structure. When using the quick locking connector in this patent document, the end of the wire is inserted into the lumen of the wire tube, and the wire tube is forced to shrink and clamp the wire by tightening the locking sleeve, thereby completing the connection between the connector and the wire. When connecting the joint body and the locking sleeve with an ordinary wrench, there is no need to use a crimping tool, the installation is convenient, and it can be reused, energy-saving and environmentally friendly, and has a good use effect. However, the joint in this patent document also has deficiencies: the port of the wire tube is at a right angle, and after the locking sleeve is tightened, the port of the wire tube is tapered, and only the inner edge of the tube mouth is in contact with the wire - it is a line contact, and the electrical Poor performance and damage to wires.

Utility model content

In view of this, the purpose of the utility model is to provide an electric quick connector with good electrical performance and which can effectively avoid damage to the wires.

The technical scheme that realizes the utility model purpose is:

An electric quick connector, comprising

A joint body, one end of which is an electrical terminal connected to the transformer terminal, and the other end is a terminal for connecting wires, and the terminal is provided with a number of pressing pieces at intervals along the circumferential direction;

A lock nut, the inner wall of which is provided with an internal thread that cooperates with the external thread on the joint body and a pressing portion suitable for pressing the pressing piece;

The terminal port expands away from the central axis to form a bell mouth shape, and a compression screw for further compressing the wire is provided on the side wall of the connector body. With a pressure piece.

In the above technical solution, the electrical terminal is tubular, and the inner wall thereof is provided with an internal thread suitable for threaded connection with a transformer terminal.

In the above technical solution, locking screws are provided on the side wall of the electrical terminal.

In the above technical solution, the cross-sectional shape of the wire pressing piece is arc-shaped.

(1) The utility model has positive effects: (1) In the utility model, the terminal port expands away from the central axis to form a bell mouth shape, so that when the product is in use, tighten the lock nut , the lock nut forces the clip to shrink and clamp the wire. The clip is in surface contact with the wire and has a large contact surface, which has good electrical performance and can avoid damaging the wire; in addition, the joint body There is also a compression screw on the side wall to further compress the wire, and a wire pressing piece is inserted in the corresponding position of the connector body to the compression screw. When wiring, the wire end is inserted into the lumen of the terminal, When the compression screw is tightened, the clamping piece is pressed by the compression screw to further compress the wire, so as to ensure that the electrical performance is further improved without damaging the wire. (2) In the utility model, the electric terminal connected with the transformer terminal is tubular, and the inner wall is provided with an internal thread connected with the transformer terminal, that is, the joint and the transformer terminal can be screwed together during installation. installation, and ensure electrical performance. (3) In the utility model, by tightening the locking screw against the end of the transformer, the reliability of the connection between the joint and the end of the transformer is further ensured.

Description of drawings

Fig. 1 is a full cross-sectional view of the connector body in the electric quick connector of the present invention;

Fig. 2 is a full sectional view of the electric quick connector in the utility model.

The reference signs shown in the figure are: 1-connector body; 2-electric terminal; 3-terminal; 31-press piece; 4-lock nut; Lock the screws.

Detailed ways

The specific structure of the electric power quick connector of the present utility model is described below in conjunction with the accompanying drawings of the description:

An electric quick connector, as shown in Figure 1 and Figure 2, which includes a connector body 1 and a lock nut 4; one end of the connector body 1 is an electrical terminal 2 connected to a transformer terminal, and the other end is a connecting wire Terminal 3, the terminal 3 is provided with a number of pressure pieces 31 at intervals along the circumferential direction; the inner wall of the lock nut 4 is provided with an internal thread that matches the external thread on the joint body 1 and is suitable for compressing the The pressing part of the pressing piece 31; the port of the terminal 3 expands away from the central axis to form a bell mouth shape, and the side wall of the joint body 1 is also provided with a pressing screw 5 for further pressing the wire. A wire pressing piece 6 is inserted in the body 1 at a position corresponding to the pressing screw 5 . In this embodiment, the port of the terminal 2 expands away from the central axis to form a bell mouth shape. In this way, when the product is in use, the locking nut 4 is tightened, and the locking nut 4 forces the clip 31 to shrink And clamp the wire, the clip 31 is in surface contact with the wire, and has a larger contact surface, good electrical performance, and will not damage the wire; in addition, the side wall of the connector body 1 is also provided with further pressing Tighten the compression screw 5 of the wire, the connector body 1 is inserted with a pressure piece 6 at the corresponding position of the compression screw 5, when wiring, insert the wire end into the lumen of the terminal 2, and tighten the Pressing the screw 5, the clamping piece 6 is pressed by the pressing screw 5 to further compress the wire, so as to ensure that the electrical performance is further improved without damaging the wire.

In this embodiment, the electrical terminal 2 is tubular, and its inner wall is provided with an internal thread suitable for threaded connection with the transformer terminal; with this structure, the electrical terminal 2 and the transformer terminal are screwed together when the joint is installed. Just connect to complete the installation, easy to install and ensure electrical performance.

Further, a locking screw 7 is provided on the side wall of the electrical connection terminal 2, and by tightening the locking screw 7, it is pushed against the transformer terminal, thereby further ensuring the reliability of the connection between the joint and the transformer terminal.

The cross-sectional shape of the wire crimping sheet 6 is arc-shaped, so that the wire crimping sheet 6 and the wire have a larger contact surface; in practice, when the wire is a copper stranded wire, the wire crimping sheet 6 can use Pure copper sheet, when the wire is an aluminum stranded wire, the wire pressing sheet 6 can be a copper-aluminum composite sheet.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. 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. And these obvious changes or changes derived from the essential spirit of the present utility model still belong to the protection scope of the present utility model.

Claims (4)

1. an electric power snap joint, comprises

Joint body (1), its one end is the power connection end (2) be connected with transformer termination, the other end is the terminals (3) connecting wire, and described terminals (3) are circumferentially arranged at intervals with some compressing tablets (31);

Locking nut (4), its inwall is provided with and the internal thread of described joint body (1) upper outside threaded engagement and the compressed part being suitable for compressing described compressing tablet (31);

It is characterized in that: described terminals (3) port forms bell mouth shape to away from the expansion of direction, axis, the sidewall of described joint body (1) is also provided with the housing screw (5) compressing wire further, in described joint body (1), is inserted with pressure-ray film (6) with described housing screw (5) correspondence position.

2. electric power snap joint according to claim 1, is characterized in that: described power connection end (2) is tubulose, and its inwall is provided with the internal thread being suitable for being connected with transformer terminal head thread.

3. electric power snap joint according to claim 2, is characterized in that: the sidewall of described power connection end (2) is provided with lock-screw (7).

4. the electric power snap joint according to claim 1 or 2 or 3, is characterized in that: the cross sectional shape of described pressure-ray film (6) is circular arc.