WO2024055366A1

WO2024055366A1 - Passive tester pen capable of indicating polarity of measured potential

Info

Publication number: WO2024055366A1
Application number: PCT/CN2022/122561
Authority: WO
Inventors: 杨家凯; 施辉选; 杨杰; 冯鹏; 刘晓明; 段军鹏; 宁静; 何花; 杨伟; 刘晶晶; 谭武光; 罗玉花; 段海和; 唐建忠; 李家保; 刘根; 刘华; 王培县; 李春利; 林恩彬
Original assignee: 云南电网有限责任公司楚雄供电局
Priority date: 2022-09-13
Filing date: 2022-09-29
Publication date: 2024-03-21
Also published as: CN115308479A

Abstract

A passive tester pen capable of indicating the polarity of a measured potential, comprising: a tester pen shank (10), wherein an insulating sleeve is sleeved outside the tester pen shank (10), a detachable connecting top seat (11) is mounted at the top of the tester pen shank (10), and a coaxial first threaded groove (12) is formed in the top of the connecting top seat (11); a tester pen insertion bit (20) configured to be inserted into a port of a circuit under test; a handheld seat (30), the outer wall of which is made of an insulating PVC material, wherein an indicator light (34) used for displaying the polarity of a measured potential is embedded in the outer wall, and a first threaded connector (31) adapted to the size of the first threaded groove (12) and threadedly connected to the first threaded groove (12) is mounted at the bottom of the handheld seat (30); and a pressing cap (40), wherein a conductive head (41) for a worker to touch with a finger is embedded in the top of the pressing cap (40). By means of the first threaded connector (31) provided on the handheld seat (30) and the first threaded groove (12) provided on the connecting top seat (11), mounting or dismounting is facilitated, and after the handheld seat (30) or the tester pen shank (10) is damaged, the handheld seat (30) or the tester pen shank (10) can be replaced independently, thereby saving costs.

Description

A passive electric test pen that can indicate the polarity of the measured potential

Technical field

The invention relates to the technical field of electric pens, in particular to a passive electric test pen capable of indicating the polarity of a potential to be measured.

Background technique

A test pen is also called a test pen, or "electric pen" for short. It is an electrician's tool used to test whether electrical wires are live. There is a neon bulb in the pen body. If the neon bulb glows during the test, it means that the wire has electricity or is a live wire in the path.

Publication (announcement) number: CN216082906U discloses a high-sensitivity passive flash electricity test pen, which belongs to the technical field of electricity measurement equipment. The test pen includes the test terminal TOP and the metal contact piece S, and also includes: resistor R01, resistor R02, resistor R11, diode D11, diode D22, light-emitting diode LED11, light-emitting diode LED12, light-emitting diode LED22, capacitor C11 and a bidirectional trigger diode D12; The electric test pen of the present invention is a passive electric test pen, which overcomes the problems of traditional neon tube electric test pens such as large current and low sensitivity, which may cause protection tripping and cause power system accidents, and is easy to popularize and apply.

The above-mentioned electric test pen has high sensitivity and is easy to promote and apply. However, the electric test pen has an integrated structure. If the pen barrel and the handheld base are damaged, they cannot be repaired and need to be replaced as a whole, which increases the maintenance cost.

Contents of the invention

The object of the present invention is to provide a passive voltage test pen that can indicate the polarity of the measured potential, so as to solve the problems raised in the above background art.

In order to achieve the above objects, the present invention provides the following technical solutions:

A passive voltage test pen that can indicate the polarity of the measured potential, including:

Electric pen holder, the outer cover of the electric pen holder is provided with an insulating sleeve, and a detachable connecting top is installed on the top, and a coaxial first thread groove is provided on the top of the connecting top;

An electric pen plug, the electric pen plug is used to be plugged into the port of the circuit under test;

Handheld base, the outer wall of the handheld base is made of insulating PVC material, and an indicator light for displaying the polarity of the measured potential is embedded in the outer wall. The bottom of the handheld base is equipped with an indicator light that matches the size of the first thread groove and The first threaded connector of the threaded connection;

Press cap, the top of the press cap is embedded with a conductive head for workers to touch.

Preferably, a plug-fit circuit board is installed in the handheld base.

Preferably, resistors R, diodes D1, D2, D3, D4, D5, D6, D7, D8 and light-emitting diodes D10 and D20 are installed on the circuit board.

Preferably, the diodes D1, D2, D3, and D4 have the same direction and are connected in series between the resistor R and the light-emitting diode D10.

Preferably, the diodes D5, D6, D7, and D8 have the same direction and are connected in series between the resistor R and the light-emitting diode D10. The light-emitting diode 20 is connected in parallel to both ends of the light-emitting diode D10 and has opposite directions.

Preferably, a second threaded groove is provided on the top of the handheld base, and a second threaded connector that is adapted to the size of the second threaded groove and is threadedly connected is installed on the bottom of the pressing cap.

Preferably, the electric pen plug, electric pen holder, circuit board and conductive head are electrically connected.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention facilitates installation or disassembly through the first threaded connector provided on the handheld base and the first threaded groove provided on the connecting top base. After the handheld base or pen holder is damaged, it can be replaced separately, saving costs. .

2. The present invention facilitates installation or disassembly through the second threaded groove opened on the top of the handheld base and the second threaded connector installed at the bottom of the pressing cap. After the circuit board is damaged, the pressing cap can be opened to inspect the internal circuit board. Repair or replace.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are further explained in detail, but they do not constitute a limitation of the present invention.

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic diagram of the exploded structure of the present invention;

Figure 3 is an electrical schematic diagram of the circuit board of the present invention.

The meaning of each number in the figure:

10. Pen holder; 11. Connection top base; 12. First thread groove;

20. Electric pen plug;

30. Handheld base; 31. First threaded connector; 32. Second threaded groove; 33. Circuit board; 34. Indicator light;

40. Pressing cap; 41. Conductive head; 42. Second threaded connector.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be understood that the terms "center", "vertical", "lateral", "length", "width", "thickness", "upper", "lower", "front", The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. , therefore cannot be construed as a limitation of the present invention.

A passive electric test pen that can indicate the polarity of the measured potential, as shown in Figures 1 to 3, includes: an electric pen holder 10. The outer cover of the electric pen holder 10 is provided with an insulating sleeve, and a detachable connecting top is installed on the top. The base 11 is connected to the top of the top base 11 with a coaxial first threaded groove 12; the electric pen plug 20 is used to be plugged into the port of the circuit under test; the handheld base 30, the outer wall of the handheld base 30 is made of insulating PVC material , and an indicator light 34 for displaying the polarity of the measured potential is embedded in the outer wall. The bottom of the handheld base 30 is equipped with a first threaded connector 31 that matches the size of the first threaded groove 12 and is threadedly connected; a pressing cap 40. The top of the pressing cap 40 is embedded with a conductive head 41 for workers to touch with their hands. The first threaded connector 31 provided on the handheld base 30 and the first threaded groove 12 provided on the connecting top base 11 facilitate the operation. During installation or disassembly, after the handheld base 30 or the pen holder 10 is damaged, it can be replaced separately, thereby saving costs.

Further, a plug-fit circuit board 33 is installed in the handheld base 30. The circuit board 33 is equipped with resistors R, diodes D1, D2, D3, D4, D5, D6, D7, D8 and light-emitting diodes D10 and D20. The diodes D1, D2, D3, and D4 have the same direction and are connected in series between the resistor R and the light-emitting diode D10. The diodes D5, D6, D7, and D8 have the same direction and are connected in series between the resistor R and the light-emitting diode D10. The light-emitting diode 20 is connected in parallel. At both ends of the light-emitting diode D10, in opposite directions, in the circuit, the A terminal is the electric pen plug 20, and the B terminal is the conductive head 41.

Specifically, the top of the handheld base 30 is provided with a second threaded groove 32, and the bottom of the pressing cap 40 is installed with a second threaded connector 40 that matches the size of the second threaded groove 32 and is threadedly connected. The second threaded groove 32 and the second threaded connector 40 installed at the bottom of the pressing cap 40 facilitate installation or disassembly. After the circuit board 33 is damaged, the pressing cap 40 can be opened to inspect, repair or replace the internal circuit board 33 .

In addition, the electric pen plug 20, the electric pen holder 10, the circuit board 33 and the conductive head 41 are electrically connected.

The working principle of the passive electric test pen of the present invention that can indicate the polarity of the measured potential: when in use, the operator threads the first threaded connector 31 provided on the handheld base 30 and the first threaded groove 12 provided on the connecting top base 11 To connect, thread the second threaded groove 32 of the handheld base 30 to the second threaded connector 40 at the bottom of the pressing cap 40. When in use, insert the pen plug 20 into the port of the circuit to be tested, and press the conductive head 41 with your fingers.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Under the premise, there will be various changes and improvements in the present invention, and these changes and improvements all fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

A passive voltage test pen capable of indicating the polarity of the measured potential, which is characterized by: including:

Electric pen holder (10), the outer cover of the electric pen holder (10) is provided with an insulating sleeve, and a detachable connecting top base (11) is installed on the top, and the top of the connecting top base (11) is provided with a coaxial first thread groove (12);

Electric pen plug (20), the electric pen plug (20) is used to be plugged into the port of the circuit under test;

Handheld base (30). The outer wall of the handheld base (30) is made of insulating PVC material, and an indicator light (34) for displaying the polarity of the measured potential is embedded in the outer wall. The bottom of the handheld base (30) A first threaded connector (31) that matches the size of the first threaded groove (12) and is threadedly connected is installed;

Pressing cap (40), the top of the pressing cap (40) is embedded with a conductive head (41) for workers to touch.
The passive electric test pen capable of indicating the polarity of the measured potential according to claim 1, characterized in that: a plug-fit circuit board (33) is installed in the handheld base (30).
The passive voltage test pen capable of indicating the polarity of the measured potential according to claim 2, characterized in that: the circuit board (33) is equipped with resistors R, diodes D1, D2, D3, D4, D5, D6, D7, D8 and LEDs D10 and D20.
The passive voltage test pen capable of indicating the polarity of the measured potential according to claim 3, characterized in that the diodes D1, D2, D3 and D4 have the same direction and are connected in series between the resistor R and the light-emitting diode D10.
The passive voltage test pen capable of indicating the polarity of the measured potential according to claim 4, characterized in that: the diodes D5, D6, D7, and D8 have the same direction and are connected in series between the resistor R and the light-emitting diode D10, The light-emitting diode 20 is connected in parallel to both ends of the light-emitting diode D10 and has opposite directions.
The passive electric test pen capable of indicating the polarity of the measured potential according to claim 1, characterized in that: a second threaded groove (32) is provided on the top of the handheld base (30), and the pressing cap (40) A second threaded connector (40) that is adapted to the size of the second threaded groove (32) and is threadedly connected is installed at the bottom.
The passive electric test pen capable of indicating the polarity of the measured potential according to claim 1, characterized in that: the electric pen plug (20), the electric pen holder (10), the circuit board (33) and the conductive head (41) are electrically sexual connection.