Electrician instrument with good sealing performance

Abstract

The utility model discloses an electrician instrument with good sealing performance, which comprises an electroprobe outer shell, the bottom of the electroprobe outer shell is provided with a plain end knife body probe, and the top of the electroprobe outer shell is sleeved with a metal end cover which is used for being electrically connected with the plain end knife body probe through a spring, a neon tube and a resistor; the outer wall of the end, close to the flat-end knife body probe, of the electroprobe outer shell is slidably sleeved with an external threaded sleeve, one end of the external threaded sleeve is fixedly connected with a spring, the spring sleeves the outer wall of the electroprobe outer shell, and the outer wall of the end, away from the spring, of the external threaded sleeve is sleeved with an internal threaded sleeve in a threaded mode. The flat knife body probe is located in the threaded sleeve, the flat knife body probe can be effectively prevented from being directly exposed to make contact with water or dust, when the electroprobe falls on the ground, the spring arranged between the external threaded sleeve and the electroprobe outer shell can provide a buffering effect, the flat knife body probe can be prevented from directly colliding with the ground, and the safety of the electroprobe is improved. Therefore, the service life of the electroprobe can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electrician's electric pencil, in particular to an electrician's instrument with good sealing performance. Background Art

[0002] A test pen is a pen used by electricians for electricity inspection and maintenance. It is mainly composed of a contact that also serves as a screwdriver, a neon tube, a voltage-dropping resistor and a pen cap (for grounding). It is a commonly used electrician's tool. It can be used to determine the neutral wire and live wire in a home lighting circuit, and can also be used to determine whether there is leakage in home appliances. When testing a charged object, the tester touches the pen cap at the rear end of the test pen with his hand. At this time, a circuit is formed with the test pen tip, neon bulb, resistor, human body and the earth. When the object being tested is charged, the neon tube will light up.

[0003] However, the flat blade probe at the end of the outer shell of the existing electric pen is mostly directly exposed to the outside. Long-term exposure to the outside will cause an oxide layer to form on its surface or dust to adhere to it, resulting in the inability to effectively conduct electricity when it contacts with a charged object, thereby affecting the use and service life of the electric pen. Utility Model Content

[0004] The utility model aims to provide an electrical instrument with good sealing performance to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electrical instrument with good sealing performance, comprising an electric pen shell, a flat-blade blade probe is installed at the bottom of the electric pen shell, and a metal end cover is sleeved on the top of the electric pen shell for electrically connecting with the flat-blade blade probe through a spring, a neon tube and a resistor; an externally threaded sleeve is slidably sleeved on the outer wall of the electric pen shell close to one end of the flat-blade blade probe, one end of the externally threaded sleeve is fixedly connected to a spring, the spring is sleeved on the outer wall of the electric pen shell, and an internally threaded sleeve is threadedly sleeved on the outer cylinder wall of the externally threaded sleeve away from one end of the spring.

[0006] Preferably, a plurality of grooves are formed at equal intervals on the outer wall of the electric pen housing, and a plurality of metal extension rods are fixedly connected at equal intervals to the bottom of the metal end cover at positions corresponding to the grooves.

[0007] Preferably, a plurality of rubber sealing blocks are fixedly connected to the inner cylinder wall of the inner threaded sleeve at one end away from the outer threaded sleeve, and gaps are provided between adjacent rubber sealing blocks.

[0008] Preferably, one end of the flat blade probe away from the outer shell of the electric pen extends to the inside of the external threaded sleeve and the internal threaded sleeve in sequence.

[0009] Compared with the prior art, the utility model has the following beneficial effects: simple structure, easy to use, and the flat-blade blade probe can be effectively protected by the externally threaded sleeve and the internally threaded sleeve arranged at the end of the electric pen outer shell. When the electric pen is not in use, the flat-blade blade probe is located inside the threaded sleeve, which can effectively prevent it from being directly exposed to water or dust. When the electric pen falls on the ground, the spring arranged between the externally threaded sleeve and the electric pen outer shell can provide a buffering effect, which can effectively prevent the flat-blade blade probe from directly colliding with the ground, thereby effectively improving the service life of the electric pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 The structure diagram of the utility model when in use Figure 1 ;

[0012] Figure 3 The structure diagram of the utility model when in use Figure 2 ;

[0013] Figure 4 This is a disassembled diagram of the utility model.

[0014] In the figure: 1. outer shell of the electric pen; 2. flat blade probe; 3. groove; 4. metal end cover; 5. metal extension rod; 6. external threaded sleeve; 7. spring; 8. internal threaded sleeve; 9. rubber sealing block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-Figure 4 The utility model provides a technical solution: an electrical instrument with good sealing performance, including an electric pen shell 1, a flat-blade blade probe 2 is installed at the bottom of the electric pen shell 1, and a metal end cover 4 is sleeved on the top of the electric pen shell 1, which is used to electrically connect with the flat-blade blade probe 2 through a spring, a neon tube and a resistor; an externally threaded sleeve 6 is slidably sleeved on the outer wall of the electric pen shell 1 close to one end of the flat-blade blade probe 2, one end of the externally threaded sleeve 6 is fixedly connected with a spring 7, the spring 7 is sleeved on the outer wall of the electric pen shell 1, and an internally threaded sleeve 8 is threadedly sleeved on the outer cylinder wall of the externally threaded sleeve 6 away from the spring 7.

[0017] Specifically, a plurality of grooves 3 are formed at equal intervals on the outer wall of the electric pen housing 1, and a plurality of metal extension rods 5 are fixedly connected at equal intervals to the bottom of the metal end cover 4 at positions corresponding to the grooves 3. The grooves 3 on the electric pen housing 1 can effectively make the electric pen housing 1 more comfortable when held, and the metal extension rods 5 extending from the metal end cover 4 to the inside of the grooves 3 can make the electric pen contact with the flat blade probe 2, resistor, neon tube and spring without the need to press the metal end cover 4 with fingers when using the electric pen.

[0018] Specifically, a plurality of rubber sealing blocks 9 are fixedly connected to the inner tube wall of the internal threaded sleeve 8 away from the end of the external threaded sleeve 6, and gaps are provided between adjacent rubber sealing blocks 9. The rubber sealing blocks 9 can perform dust-proof sealing on the end of the internal threaded sleeve 8 and will not affect the extension of the flat-edge blade probe 2.

[0019] Specifically, one end of the flat blade probe 2 away from the outer shell 1 of the electric pen extends to the inside of the external threaded sleeve 6 and the internal threaded sleeve 8 in sequence.

[0020] Specifically, when the electric pen is not in use, the external threaded sleeve 6 at the end of the electric pen outer shell 1 can drive the internal threaded sleeve 8 threadedly sleeved on the outer cylinder wall to extend in a direction away from the electric pen outer shell 1 under the elastic force of the spring 7, so that the flat blade probe 2 is stored inside the threaded sleeve. Figure 1 As shown, the flat blade probe 2 can be effectively prevented from being directly exposed to the outside, the possibility of dust contacting the flat blade probe 2 can be reduced, and when the electric pen falls on the ground, the spring 7 arranged between the external threaded sleeve 6 and the outer shell 1 of the electric pen can provide a buffering effect, which can effectively prevent the flat blade probe 2 from directly hitting the ground, thereby effectively improving the service life of the electric pen;

[0021] When the electric pen is needed, the end of the electric pen close to the flat blade probe 2 is directly extended along the socket hole, and the internal thread sleeve 8 and the external thread sleeve 6 will drive the spring 7 to contract, so that the flat blade probe 2 extends out of the rubber sealing block 9 on the internal thread sleeve 8 and extends toward the inside of the socket hole. Figure 2 As shown, measurement can be performed;

[0022] When the socket is not being measured, the internal thread sleeve 8 can be directly screwed upward, and the internal thread sleeve 8 can move upward along the external thread sleeve 6, such as Figure 3 As shown, the flat blade probe 2 is exposed.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrical instrument with good sealing performance, comprising an electric pen housing (1), a flat blade probe (2) being installed at the bottom of the electric pen housing (1), and a metal end cover (4) being sleeved on the top of the electric pen housing (1) for electrically connecting with the flat blade probe (2) through a spring, a neon tube and a resistor; It is characterized in that An external threaded sleeve (6) is slidably sleeved on the outer wall of the electric pen outer shell (1) close to the flat blade probe (2), one end of the external threaded sleeve (6) is fixedly connected to a spring (7), the spring (7) is sleeved on the outer wall of the electric pen outer shell (1), and an internal threaded sleeve (8) is threadedly sleeved on the outer cylinder wall of the external threaded sleeve (6) away from the spring (7).

2. The electrical instrument with good sealing performance according to claim 1, characterized in that: A plurality of grooves (3) are formed at equal intervals on the outer wall of the electric pen housing (1), and a plurality of metal extension rods (5) are fixedly connected at equal intervals to the bottom of the metal end cover (4) at positions corresponding to the grooves (3).

3. The electrical instrument with good sealing performance according to claim 1, characterized in that: A plurality of rubber sealing blocks (9) are fixedly connected to the inner cylinder wall of the inner threaded sleeve (8) at one end away from the outer threaded sleeve (6), and gaps are provided between adjacent rubber sealing blocks (9).

4. The electrical instrument with good sealing performance according to claim 1, characterized in that: One end of the flat blade probe (2) away from the outer shell (1) of the electric pen extends to the inside of the external thread sleeve (6) and the internal thread sleeve (8) in sequence.

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