CN209784433U - test pencil - Google Patents

Abstract

The utility model discloses an test electrography for solve among the prior art test the unsafe technical problem of electrography measuring result, should test the electrography and include: the pen comprises a metal pen point, a pen body made of insulating materials, an electricity testing device, a conductive base and a wiring clamp, wherein the metal pen point, the electricity testing device and the conductive base are sequentially and electrically connected, the electricity testing device and the conductive base are accommodated in the pen body, and the wire ground base is connected with the wiring clamp through a wire; the electricity testing device comprises a neon lamp, a current-limiting resistor and a voltage display module connected with the neon lamp and the current-limiting resistor in parallel, and the voltage display module is used for displaying detected voltage values.

Description

Test pencil

Technical Field

The utility model relates to an electrical equipment field especially relates to an electricity test pen.

Background

In the routine maintenance of electrical equipment, the test pencil is a common safety tool and can be used for detecting whether electrical equipment, switches and the like are electrified or not. Test electrography among the prior art, when testing electric operation, need staff's hand touch to test the electrically conductive base of electrography, if the staff stands on insulating object, then test the electrography and be difficult to construct electrically conductive return circuit, test the neon lamp of electrography and can not give out light usually, lead to testing the inaccurate of electric measuring result.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an test electrography for solve among the prior art and test the unsafe technical problem of electrography measuring result.

The embodiment of the utility model provides an adopt following technical scheme: an electroscope, comprising: the pen comprises a metal pen point, a pen body made of insulating materials, an electricity testing device, a conductive base and a jointing clamp, wherein the metal pen point, the electricity testing device and the conductive base are sequentially and electrically connected, the electricity testing device and the conductive base are accommodated in the pen body, and the conductive base is connected with the jointing clamp through a wire; the electricity testing device comprises a neon lamp, a current-limiting resistor and a voltage display module connected with the neon lamp and the current-limiting resistor in parallel, and the voltage display module is used for displaying detected voltage values.

Furthermore, the pen body is also connected with a flashlight, and the light emitting direction of the flashlight faces the direction of the metal pen point.

Furthermore, a groove is formed in the pen body, and the flashlight is arranged in the groove.

Furthermore, an L-shaped pen clip is arranged on the pen body, and a protrusion facing the pen body is further arranged at the end of the pen clip.

Further, the pen is characterized in that friction grains are arranged on the outer surface of the pen body.

Furthermore, the metal pen point is characterized in that the metal pen point is a cone.

Furthermore, the metal pen point is detachably connected with the pen body.

The embodiment of the utility model provides an above-mentioned at least one technical scheme who adopts can reach following beneficial effect: through setting up the binding clip of being connected with electrically conductive base wire, like this, when testing the electricity again, can be with binding clip ground connection, need not staff's manual contact, avoid the staff to stand on insulating object, lead to testing the unsafe problem of electric measuring result. In addition, because the worker does not need to touch the electroscope pen, the safety of the electroscope process is improved. In addition, the voltage display module connected with the neon lamp and the current-limiting resistor in parallel is arranged, so that the detected voltage value can be checked in real time.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

Fig. 1 is a schematic view of an electricity test pen provided by an embodiment of the present invention;

Fig. 2 is a schematic view of the working principle of the electroscope apparatus in fig. 1.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

An embodiment of the utility model provides an test electrography for solve among the prior art and test the unsafe technical problem of electrography measuring result. As shown in fig. 1, the test pencil mainly includes a metal pen point 10, a pen body 20 made of insulating material, an electricity testing device 30, a metal spring 40, a conductive base 50 and a wire connecting clip 60, and the main structure of the test pencil and the connection relationship inside the test pencil will be described below.

As can be seen from fig. 1, the metal pen point 10 is substantially conical, that is, the metal pen point 10 has a sharp pen point, so that the whole electroscope can measure whether the surface of the electrical equipment is dotted, and can also perform a penetration measurement, that is, the pen point of the metal pen point 10 penetrates through an insulating layer on the surface of the electrical equipment, so as to measure whether a metal body inside the insulating layer is dotted. In other embodiments, the shape of the metal pen point 10 may be a straight line shape or a cross shape like a screwdriver, so that the whole test pencil not only has the function of testing electricity, but also has the function of opening threads of the screwdriver.

Through the various structural designs of the metal pen point 10, the metal pen point 10 can be detachably connected with the pen body 20, for example, an external thread is arranged at the upper end of the metal pen point, a threaded hole is arranged on the pen body, and the metal pen point is connected with the pen body through a thread; for another example, the cross section of the upper end of the metal pen point is a regular hexagon or a square, the pen body is provided with a blind hole with a regular hexagon or a square cross section, the metal pen point is inserted into the pen body, and the like. Through metal nib 10 with the connection dismantled of pen body 20, and then can be according to operational environment, change the metal nib that is the cone, or the metal nib of style of calligraphy, cross etc. has enlarged the range of application of the electrography that this embodiment provided.

the pen body 20 is made of an insulator, and according to the direction shown in fig. 1, the lower portion of the pen body 20 is used for connecting and fixing the metal pen point 10, and a conducting wire passes through the lower portion of the pen body 20 and is used for electrically connecting the metal pen point 10 and the electricity testing device 30. The upper part of the pen body 20 is formed with a hollow cavity which can be used for accommodating the electricity testing device 30, the spring 40, the conductive base 50 and the like.

As can be seen from fig. 1, an L-shaped pen clip 201 is further disposed on the outer surface of the pen body 20, and the pen clip 201 specifically includes a connecting portion and a clip portion, where the connecting portion is shorter, so as to connect the pen body 20 and the clip portion; the clip portion is long and is disposed substantially parallel to the pen body 20. In addition, a protrusion facing the pen body 20 is further disposed at the end of the fastening portion of the pen clip 201.

Through set up above-mentioned pen card 201 on pen body 20, when not testing the electricity work, whole test pencil can be hung on electrician's saddlebag, can also hang even on staff's waistband to make whole test pencil carry easily. In addition, the end of the pen clip 201 is provided with a protrusion facing the pen body 20, so that the whole test pencil is not easy to fall off in the carrying process.

Opposite to the position of the pen card 201, the pen body 20 is also connected with a flashlight 202, and the light emitting direction of the flashlight 202 faces the direction of the metal pen point 10, so that the electricity testing operation is convenient to be carried out under the dark working condition.

In a preferred embodiment, the pen body 20 is provided with a groove, the direction of the groove is parallel to the main direction of the pen body 20, and the flashlight 202 is arranged in the groove, so that the volume of the whole test pencil can be reduced, and the test pencil is easier to carry.

In addition, the exterior of the pen body 20 may be further provided with friction lines (not shown), which may be concave lines or convex lines encircling the whole pen body 20, so as to increase the friction force for holding, and make the whole test pencil convenient for holding.

As shown in fig. 2, the electroscope 30 specifically includes a neon lamp 301, a current limiting resistor 302, and a voltage display module 303 connected in parallel with the neon lamp 301 and the current limiting resistor 32, where the voltage display module 303 is configured to display a detected voltage value.

The voltage display module 303 may further include a display screen, and the surface of the display screen can be seen through the pen body 20, and the display screen can be used to display the measured voltage value.

The electroscope 30 is connected with the conductive base 50 through the conductive spring 40. As can also be seen in fig. 1, the conductive base 50 is connected to the terminal 60 by means of a wire.

For the connection relationship of the components in the whole test pencil, as can be seen by combining fig. 1 and fig. 2, the metal pen point 10 is electrically connected with the test device 30; in the electricity testing device 30, one end of a neon lamp 301 is connected with a metal pen point 10, the other end of the neon lamp 301 is connected with a current-limiting resistor 302 in series, and the other end of the current-limiting resistor 302 is connected with a conductive spring 40. The voltage display module 303 is connected in parallel with the neon lamp 301 and the current limiting resistor 302.

When the test pencil provided by the embodiment works, the jointing clamp 60 can be connected to an object which is grounded and not electrified, the metal pencil point 10 is contacted with the electrical equipment to be tested, if the electrical equipment has voltage, the voltage on the electrical equipment can pass through the metal pencil point 10, the neon lamp 301, the current-limiting resistor 302, the metal spring 40, the conductive base 50 and the jointing clamp 60, and is connected to the ground through the jointing clamp 60, if the voltage is large enough, the neon lamp 301 can emit light, and the display screen of the voltage display module 303 can display the measured voltage.

The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (7)

1. An electroscope, comprising: the pen comprises a metal pen point, a pen body made of insulating materials, an electricity testing device, a conductive base and a jointing clamp, wherein the metal pen point, the electricity testing device and the conductive base are sequentially and electrically connected, the electricity testing device and the conductive base are accommodated in the pen body, and the conductive base is connected with the jointing clamp through a wire;

The electricity testing device comprises a neon lamp, a current-limiting resistor and a voltage display module connected with the neon lamp and the current-limiting resistor in parallel, and the voltage display module is used for displaying detected voltage values.

2. the test pencil of claim 1, wherein a flashlight is further connected to the pencil body, and the light emitting direction of the flashlight faces the direction of the metal pencil point.

3. The test pencil of claim 2 wherein a recess is provided in the body and the flashlight is disposed in the recess.

4. The test pencil of claim 3, wherein an L-shaped pencil clip is arranged on the pencil body, and a protrusion facing the pencil body is further arranged at the end of the pencil clip.

5. The test pencil of claim 1 wherein the exterior of the pencil body is provided with friction lines.

6. The test pencil of any one of claims 1 to 5 wherein the metal tip is conical.

7. The test pencil of claim 1 wherein the metal tip is removably attached to the body.