CN209313023U - A kind of crimping screw - Google Patents

Abstract

The utility model discloses a crimping screw, which comprises: a screw; the screw includes a square head and a threaded rod, and there is a circular wire hole in the middle of the square head for releasing wires; the threaded rod is connected to the side wall of the square head; a nut , used to cooperate with the threaded rod to fix the wire and terminal. In the installed state, the wire passes through the circular wire hole, and the square head of the screw is inserted into the square mounting hole of the terminal; the nut is tightened on the threaded rod to fix the wire and the terminal. Compared with the prior art, the utility model has the following beneficial effects: 1), the crimping structure is firmly fixed, and the wires are not easy to loosen; 2), the screw is seriously corroded and can be easily replaced; 3), the installation process is simple, and the installation efficiency is high; 4 ), there is no need to crimp the threading lug at the wire end, which simplifies the operation process and facilitates quick repair in case of an accident; 5), the production cost is low, and it is suitable for a wide range of wire diameters.

Description

a crimping screw

technical field

The utility model belongs to the technical field of electric power, in particular to a wire crimping screw.

Background technique

Screws are needed in many places in the power industry, and there are various types. Among them, screws are widely used to connect wires to terminals of other power equipment, such as busbars, drop-out fuses, transformers, and so on. If the connection is not firm, the long-term vibration will cause the wire and the terminal of the power equipment to fall off, and the poor contact will heat up at the connection and eventually burn the wire under the condition of continuous high current, which will affect the reliability of power supply and equipment safety.

The screw crimping method is mainly used to connect the wire to the terminal of other electric equipment, which can be divided into the screw bottom crimping method and the nut crimping method.

Please refer to FIG. 1 , the crimping method at the bottom of the screw is often used for indoor wire connection with a small wire diameter, that is, put the wire into the hole terminal 100, and tighten the screw 200 to compress the wire with the bottom of the screw 200.

The nut crimping method is often used for the connection of wires with thicker wire diameters, that is, the wire or threading lug is placed between the nut and the terminal, and the wire or threading lug is compressed by tightening the nut.

The existing screw crimping method has the following technical problems:

1. The crimping is not tight and the long-term vibration wire is easy to fall off.

2. The screws are corroded and difficult to replace under long-term outdoor or humid environment.

3. The installation quality of the nut crimping method is difficult to control. The workers cut off the wire part for crimping for convenience, resulting in insufficient carrying capacity of the wire, and it is easy to burn the wire when a large current flows.

4. Special tools are needed to press the nose of the wire, which is not conducive to quick repair in the event of an accident.

Utility model content

The purpose of the utility model is to provide a crimping screw to solve the technical problems existing in the existing two screw crimping structures. The utility model not only can firmly fix the wire but also can conveniently disassemble the screw when the screw is corroded by changing the style of the traditional screw.

In order to achieve the above object, the utility model adopts the following technical solutions:

A crimping screw, comprising:

Screw; the screw includes a square head and a threaded rod, and there is a circular wire hole in the middle of the square head for placing wires; the threaded rod is connected to the side wall of the square head;

Nut, used to cooperate with the threaded rod to secure the wire to the terminal.

Further, the extending direction of the threaded rod is perpendicular to the extending direction of the circular wire hole.

Further, the inner wall of the circular wire hole is provided with threads.

Furthermore, the terminals have square mounting holes.

Further, in the installed state, the wire passes through the circular wire hole, and the square head of the screw is inserted into the square mounting hole of the terminal; the nut is tightened on the threaded rod to fix the wire and the terminal.

Further, the gap between the two sides of the square head parallel to the extending direction of the wire and the square mounting hole 30 is A, and the gap between the two sides of the square head perpendicular to the extending direction of the wire and the square mounting hole 30 is B; A<B .

Further, A=0.2mm; B=1.5mm.

Further, a gasket is provided between the nut and the terminal, and the gasket is sleeved on the threaded rod.

Further, there is a square hole in the middle of the gasket, and the size of the square hole is larger than the size of the square head of the screw, so that the square head can pass through the square hole.

Further, the gasket between the nut and the terminal is one or more pieces.

Compared with the prior art, the utility model has the following beneficial effects:

1) The crimping structure is firmly fixed, and the wire is not easy to loosen;

2) The screw is seriously corroded and can still be easily replaced;

3) The installation process is simple and the installation efficiency is high;

4) There is no need to crimp the threading nose at the wire end, which simplifies the operation process and facilitates quick repair in case of an accident;

5) The production cost is low, and the range of suitable wire diameters is large.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is the structure schematic diagram of hole terminal and screw adopted in existing screw bottom crimping method;

Fig. 2 is the schematic diagram of the structure of crimping screw;

Fig. 3 is a sectional view of the crimping screw shown in Fig. 2;

Fig. 4 is a front view of the installation state of a crimping screw of the present invention;

FIG. 5 is a cross-sectional view of the structure shown in FIG. 4 .

Detailed ways

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present utility model. Unless otherwise specified, all technical terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

Please refer to FIG. 2 and FIG. 3 , the utility model is a crimping screw, which includes a screw 1 , a nut 4 and a washer 5 .

Screw 1 comprises a square head 11 and a threaded rod 12, a circular wire hole 6 is arranged in the middle of the square head 11, and is used for putting wires; The direction of extension of the hole 6 is vertical. The nut 4 and the washer 5 are used to cooperate with the threaded rod 12 .

The inner wall of the circular wire hole 6 is threaded for increasing the friction between the wire 2 and the circular wire hole 6 , so that the wire 2 is not easy to fall off from the circular wire hole 6 .

The terminal 3 of the device has a square mounting hole 30 .

When installing, pass the wire through the round wire hole 6, insert the square head 11 of the screw 1 into the square installation hole 30 of the terminal 3, after insertion, the left and right sides of the square head 11 and the square installation hole 30 are each about 0.2mm apart There is a gap of about 1.5mm on the upper and lower sides. During the tightening process, one end of the screw 1 is fixed, and the nut 4 is tightened to crimp the wire to the terminal 3 of the equipment.

When the screw is corroded and difficult to twist, the wire 2 can be cut off along the upper and lower sides of the square head 11, and the screw 1 can fall off from the square mounting hole 30.

The middle of the spacer 5 is square, and the square hole is slightly larger than the square head 11 of the screw. The square head 11 of the screw 1 can pass through it. Increase or decrease the number of spacers depending on the wire diameter.

It can be known from technical knowledge that the utility model can be realized through other implementations without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the utility model or within the range equivalent to the utility model are included in the utility model.

Claims (10)

1. A crimping screw, characterized in that, comprising: Screw (1); said screw (1) includes a square head (11) and a threaded rod (12), and there is a circular wire hole (6) in the middle of the square head (11), which is used to put wires; the threaded rod (12) Be connected to the side wall of the square head (11); The nut (4) is used to cooperate with the threaded rod (12) to fix the wire and the terminal (3). 2. A crimping screw according to claim 1, characterized in that the extending direction of the threaded rod (12) is perpendicular to the extending direction of the circular wire hole (6). 3. A crimping screw according to claim 1, characterized in that the inner wall of the circular wire hole (6) is threaded. 4. A crimping screw according to claim 1, characterized in that, the terminal (3) has a square mounting hole (30). 5. A crimping screw according to claim 4, characterized in that, in the installed state, the wire passes through the circular wire hole (6), and the square head (11) of the screw (1) is inserted into the terminal (3 ) in the square mounting hole (30); the nut (4) is tightened on the threaded rod (12), so that the wire and the terminal (3) are fixed. 6. A crimping screw according to claim 5, characterized in that the gap between the square head (11) and the square mounting hole (30) on both sides parallel to the extending direction of the wire is A, and the square head (11) ) and the square installation hole (30) on both sides perpendicular to the extending direction of the wire are both B; A<B. 7. A wire crimping screw according to claim 6, wherein A=0.2mm; B=1.5mm. 8. A crimping screw according to claim 6, characterized in that a gasket (5) is provided between the nut (4) and the terminal (3), and the gasket (5) is sleeved on the threaded rod (12 )superior. 9. A crimping screw according to claim 8, characterized in that there is a square hole in the middle of the washer (5), and the size of the square hole is larger than the size of the square head of the screw, allowing the square head to pass through the square hole . 10. A crimping screw according to claim 8, characterized in that, the gasket (5) between the nut (4) and the terminal (3) is one or more pieces.