CN203310875U - Contact type switch testing wire - Google Patents

Abstract

A contact type switch test line, the technical solution is that it includes a wire, a cylindrical plug terminal and an insulating heat-shrinkable tube, one end of the wire is connected to a test instrument, and the other end is electrically connected to the cylindrical plug terminal; The insulating heat-shrinkable tube is tightly sleeved on the outside of the cylindrical plug terminal and overlapped with the insulation skin of the wire. The utility model uses the cylindrical plug-in terminal to replace the clamp of the traditional contact switch test line, which makes the connection between the test line and the contact switch columnar terminal more firm and reliable, completely eliminates the possibility of the test line being shaken off, and ensures The smooth progress of the contact switch test. The function of the insulating heat shrinkable tube is to protect the core of the cylindrical plug terminal and the wire, further improving the safety of the switch test.

Description

Contact switch test line

technical field

The utility model relates to a test line used when testing a contact switch, which belongs to the technical field of testing.

Background technique

At present, when the substation tests the contact switch, it generally uses a test line with a clamp at the end. The clamps of the two test lines are clamped on the two columnar terminals of the contact switch to connect the contact switch. Test the circuit. Since the columnar terminals of the contact switch are relatively dense (see Figure 1), the connection between the clamp and the columnar terminals is not firm and there are many exposed metal parts, so the clamp is easy to fall off due to vibration when the switch is closed. Then cause a short circuit, burn out the contact switch or other equipment in the test circuit, and cause unnecessary economic losses to the substation.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a contact type switch test line which can be reliably connected with the columnar terminal and is not prone to short circuit.

Problem described in the utility model is realized by the following technical solutions:

A contact type switch test line, which comprises a wire, a cylindrical plug terminal and an insulating heat-shrinkable tube, one end of the wire is connected to a test instrument, and the other end is electrically connected to the cylindrical plug-in terminal; the insulation heat-shrinkable The tube fits snugly over the outside of the barrel terminal and overlaps the insulation of the wire.

In the above-mentioned contact switch test line, the cylinder at the head of the cylindrical plug terminal is in interference fit with the columnar terminal of the contact switch and is provided with an axial expansion and contraction joint, and its tail is crimped with the wire.

In the above-mentioned contact switch test line, the crimping point between the cylindrical plug terminal and the wire is a solder reinforcement point.

The utility model uses the cylindrical plug-in terminal to replace the clamp of the traditional contact switch test line, which makes the connection between the test line and the contact switch columnar terminal more firm and reliable, completely eliminates the possibility of the test line being shaken off, and ensures The smooth progress of the contact switch test. The function of the insulating heat shrinkable tube is to protect the core of the cylindrical plug terminal and the wire, and further improve the safety of the switch test.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Figure 1 is a schematic diagram of the columnar terminal arrangement of the contact switch;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a structural schematic diagram of a cylindrical plug terminal;

Fig. 4 is a schematic diagram of the connection between the cylindrical plug terminal and the wire;

Fig. 5 is a schematic diagram of the connection between the utility model and the contact switch.

The list of labels in the figure is: 1. contact switch housing; 2. cylindrical terminal; 3. insulating heat shrinkable tube; 4. cylindrical plug terminal; 5. wire core; 6. wire.

Detailed ways

Referring to Figures 1 to 5, the utility model is composed of an insulating heat-shrinkable tube 3, a cylindrical plug terminal 4 and a wire 6, the cylindrical plug-in terminal 4 is crimped on the end of the wire 6, and the insulating heat-shrinkable tube 3 is set on The outside of the barrel-shaped plug terminal 4 overlaps with the insulation of the wire 6 .

Production of test lines

Main materials: two wires, two cylindrical plug terminals 4.

Production process: Remove the insulation at one end of the wire, place the end of the wire in the U-shaped groove at the end of the cylindrical plug terminal 4, crimp the two together with crimping equipment (welding can also be used), and finally Put the insulating heat-shrinkable tube 3 on the cylindrical plug-in terminal 4 and heat it, so that the insulating heat-shrinkable tube 3 shrinks and fits tightly on the cylindrical plug-in terminal 4 .

Advantages of this test line

Easy to use, easy to carry, safe and reliable wiring, can not only speed up the construction progress but also ensure the safety of people and equipment.

Claims (3)

1. A contact type switch test line, characterized in that it includes a wire (6), a cylindrical plug terminal (4) and an insulating heat shrinkable tube (3), and one end of the wire (6) is connected to the test instrument One end is electrically connected to the cylindrical plug terminal (4); the insulating heat shrinkable tube (3) is tightly sleeved on the outside of the cylindrical plug terminal (4) and overlapped with the insulation skin of the wire (6). 2. The contact switch test line according to claim 1, characterized in that the cylinder of the head of the cylindrical plug terminal (4) is in interference fit with the cylindrical terminal (2) of the contact switch and An axial expansion and contraction joint is provided, and its tail is crimped with the wire (6). 3 . The contact switch test line according to claim 2 , characterized in that, the crimping point between the cylindrical plug terminal ( 4 ) and the wire ( 6 ) is a solder reinforcement point. 4 .

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