Electroscope for wire and electrical equipment detection

Abstract

The utility model discloses an electroscope for detecting a lead and electrical equipment, which comprises a plastic shell, a metal rod arranged at the first end of the plastic shell, a resistor, a neon bulb, another resistor and a metal cap arranged at the second end of the metal rod, wherein the first end of the metal rod is freely arranged, and the second end of the metal rod extends into the plastic shell; the metal cap presses the neon bulb and the resistor at the second end of the metal rod through the first spring, and an insulating sleeve is arranged outside the first end of the metal rod; the device further comprises a first protective cover and a second protective cover. According to the electroscope, the first protective cover and the second protective cover which are linked are arranged, so that the metal cap and the metal rod can be protected when the electroscope is not used, the metal cap can be completely pressed by a hand during electricity measurement, and a loop can be formed by an electrified conductor, an electroworking pen, a human body and the ground in the electricity measurement process. Effectiveness during electricity testing is guaranteed, and misjudgment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a detector for testing wires and electrical equipment. Background Technology

[0002] An electrician is an instrument used to detect whether an object is charged. An electrician's pen is a commonly used electrician and is usually used to distinguish between the neutral and live wires in household lighting circuits. It can also be used to determine whether household appliances have leakage.

[0003] However, when using an electrician's pen, the metal cap at the end must be pressed to form a ground wire. However, when novices or operators are distracted, they often fail to press the metal cap at the end. In this case, since the live conductor, the electrician's pen, the human body and the ground do not form a circuit, the neon bulb in the electrician's pen will not light up, thus causing a misjudgment that the live conductor is not charged. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a detector for testing wires and electrical equipment. By setting up a linked first and second protective cover, the metal cap and metal rod can be protected when the detector is not in use. During electrical testing, it ensures that the hand can press the metal cap 100%, thereby ensuring that a circuit is formed between the live conductor, the electrician's pen, the human body, and the ground during the electrical testing process. This ensures the effectiveness of the electrical test and avoids misjudgment.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An electroscope for testing wires and electrical equipment includes a plastic housing, a metal rod disposed at a first end of the plastic housing, the first end of the metal rod being freely disposed, a second end of the metal rod extending into the plastic housing, a resistor, a neon bulb, and a resistor disposed inside the plastic housing, a metal cap disposed at the second end of the metal rod, the metal cap pressing the neon bulb and the resistor against the second end of the metal rod by a first spring, and an insulating sleeve provided outside the first end of the metal rod; it also includes a first protective cover slidably disposed outside the plastic housing and a second protective cover slidably disposed outside the first end of the metal rod;

[0007] The metal cap is hidden inside the first protective cover, and the first end of the metal rod is hidden inside the second protective cover;

[0008] When the first protective cover slides toward the metal rod, the metal cap is exposed, which simultaneously causes the second protective cover to slide toward the metal cap, exposing the first end of the metal rod.

[0009] Furthermore, the plastic outer shell is provided with a slide rail and a pulley, and the inner wall of the first protective cover is provided with a slide groove adapted to the slide rail. The first protective cover is slidably connected to the plastic outer shell through the slide rail and the slide groove.

[0010] The first end of the transmission rope is connected to the first protective cover, and the second end of the transmission rope is connected to the second protective cover after passing through a pulley;

[0011] The second protective cover is slidably fitted onto the outside of the insulating sleeve.

[0012] Furthermore, a second spring is provided on the outside of the insulating sleeve, and the two ends of the second spring are fixedly connected to the plastic shell and the second protective cover, respectively.

[0013] Furthermore, there are two slide rails, which are symmetrically arranged about the axis of the metal rod.

[0014] Furthermore, the first protective cover is made of insulating material.

[0015] Furthermore, the second protective cover is made of insulating material.

[0016] Furthermore, the insulating material is phenolic resin or glass fiber reinforced plastic.

[0017] The beneficial effects of this utility model are:

[0018] This invention, by setting up a linked first and second protective cover, protects the metal cap and metal rod when the voltage detector is not in use. During voltage testing, it ensures that the hand can press the metal cap 100%, thereby ensuring that a circuit is formed between the live conductor, the electrician's pen, the human body, and the ground. This guarantees the effectiveness of the voltage test and avoids misjudgment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the electroscope for testing wires and electrical equipment in this embodiment of the present invention;

[0020] In the diagram, 1. Plastic casing; 2. Metal rod; 3. Resistor; 4. Neon bulb; 5. Metal cap; 6. First spring; 7. Insulating sleeve; 8. First protective cover; 9. Second protective cover; 10. Slide rail; 11. Pulley; 12. Slide groove; 13. Second spring; 14. Transmission rope. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] See Figure 1 This utility model provides a technical solution:

[0023] Example:

[0024] like Figure 1 As shown, an electroscope for testing wires and electrical equipment includes a plastic housing 1, a metal rod 2 disposed at the first end of the plastic housing 1, the first end of the metal rod 2 being freely disposed, the second end of the metal rod 2 extending into the plastic housing 1, a resistor 3, a neon bulb 4, and a resistor 3 disposed inside the plastic housing 1, a metal cap 5 disposed at the second end of the metal rod 2, the metal cap 5 pressing the neon bulb 4 and the resistor 3 against the second end of the metal rod 2 by a first spring 6, and an insulating sleeve 7 provided outside the first end of the metal rod 2; it also includes a first protective cover 8 slidably disposed outside the plastic housing 1 and a second protective cover 9 slidably disposed outside the first end of the metal rod 2;

[0025] The metal cap 5 is hidden inside the first protective cover 8, and the first end of the metal rod 2 is hidden inside the second protective cover 9;

[0026] When the first protective cover 8 slides toward the metal rod 2, the metal cap 5 is exposed, and at the same time, the second protective cover 9 slides toward the metal cap 5, and the first end of the metal rod 2 is exposed.

[0027] The plastic outer shell 1 is provided with a slide rail 10 and a pulley 11 on its exterior. The inner wall of the first protective cover 8 is provided with a slide groove 12 that is adapted to the slide rail 10. The first protective cover 8 is slidably connected to the plastic outer shell 1 through the slide rail 10 and the slide groove 12.

[0028] The first end of the transmission rope 14 is connected to the first protective cover 8, and the second end of the transmission rope 14 is connected to the second protective cover 9 after passing through the pulley 11;

[0029] The second protective cover 9 is slidably sleeved on the outside of the insulating sleeve 7.

[0030] The insulating sleeve 7 is provided with a second spring 13 on its outside, and the two ends of the second spring 13 are fixedly connected to the plastic shell and the second protective cover 9, respectively.

[0031] There are two slide rails, which are symmetrically arranged about the axis of the metal rod 2.

[0032] Both the first protective cover 8 and the second protective cover 9 are made of insulating materials (such as phenolic resin or glass fiber reinforced plastic).

[0033] Among them, 1. The voltage tester is an electrician's pen, and its working principle and connection relationship are existing technologies, which will not be elaborated here.

[0034] Working principle: Before the electroscope is used, the first protective cover 8 protects the metal cap 5 inside, and the second protective cover 9 protects the end of the metal rod 2 inside, at which time it is impossible to measure the current.

[0035] When testing the electrical circuit of wires and electrical equipment, pinch the outside of the plastic shell 1 with two or more fingers (avoiding the transmission rope 14), while pressing the first protective cover 8 horizontally with the thumb (or other fingers). The first protective cover 8 moves towards the metal rod 2 under force until the thumb contacts the metal cap 5. At this point, the first protective cover 8 can no longer move, thus completing the contact between the finger and the metal cap 5, thereby ensuring that a circuit is formed with the ground during the electrical test.

[0036] When the first protective cover 8 moves, it drives the second protective cover 9 towards the metal cap 5 via the transmission rope 14. When the first protective cover 8 stops moving, the first end of the metal rod 2 hidden inside the second protective cover 9 is exposed. At this point, electrical testing can begin, and the testing process ensures that a circuit is formed between the live conductor, the electrician's pen, the human body, and the ground. This ensures the effectiveness of the electrical test and avoids misjudgment.

[0037] This invention, by setting up a linked first and second protective cover, protects the metal cap and metal rod when the voltage detector is not in use. During voltage testing, it ensures that the hand can press the metal cap 100%, thereby ensuring that a circuit is formed between the live conductor, the electrician's pen, the human body, and the ground. This guarantees the effectiveness of the voltage test and avoids misjudgment.

[0038] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A voltage detector for testing wires and electrical equipment, comprising a plastic housing, a metal rod disposed at a first end of the plastic housing, the first end of the metal rod being freely disposed, a second end of the metal rod extending into the plastic housing, a resistor, a neon bulb, and a resistor disposed within the plastic housing, and a metal cap disposed at the second end of the metal rod, wherein the metal cap presses the neon bulb and the resistor against the second end of the metal rod by a first spring, and an insulating sleeve is provided outside the first end of the metal rod; characterized in that: It also includes a first protective cover that can be slidably disposed outside the plastic shell, and a second protective cover that can be slidably disposed outside the first end of the metal rod; The metal cap is hidden inside the first protective cover, and the first end of the metal rod is hidden inside the second protective cover; When the first protective cover slides toward the metal rod, the metal cap is exposed, which simultaneously causes the second protective cover to slide toward the metal cap, exposing the first end of the metal rod.

2. The detector for testing wires and electrical equipment according to claim 1, characterized in that: The plastic outer shell is provided with a slide rail and a pulley, and the inner wall of the first protective cover is provided with a slide groove adapted to the slide rail. The first protective cover is slidably connected to the plastic outer shell through the slide rail and the slide groove. The first end of the transmission rope is connected to the first protective cover, and the second end of the transmission rope is connected to the second protective cover after passing through a pulley; The second protective cover is slidably fitted onto the outside of the insulating sleeve.

3. The detector for testing wires and electrical equipment according to claim 2, characterized in that: The insulating sleeve is provided with a second spring on its outside, and the two ends of the second spring are fixedly connected to the plastic shell and the second protective cover, respectively.

4. The detector for testing wires and electrical equipment according to claim 2, characterized in that: Two slide rails are provided, and the two slide rails are symmetrically arranged about the axis of the metal rod.

5. The detector for testing wires and electrical equipment according to claim 1, characterized in that: The first protective cover is made of insulating material.

6. The detector for testing wires and electrical equipment according to claim 1, characterized in that: The second protective cover is made of insulating material.

7. The detector for testing wires and electrical equipment according to claim 5 or 6, characterized in that: The insulating material is phenolic resin or glass fiber reinforced plastic.

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