CN216350917U

CN216350917U - Circuit detection pen

Info

Publication number: CN216350917U
Application number: CN202122621025.1U
Authority: CN
Inventors: 郭嘉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-19
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a circuit detection pen, and relates to the technical field of circuit detection. The test pencil comprises a test pencil main body, wherein the test pencil main body comprises a handheld part and a detection part, a circuit board is arranged in the handheld part, a detection circuit is integrated on the circuit board, and the detection circuit is connected with the detection part; the end part of the handheld part is also provided with a conduction part connected with the detection circuit; generally, the arrangement of the whole device can display the detected voltage value for the detection personnel to check; when the voltage is detected, the voltage can be directly tested; meanwhile, the voltage with smaller numerical value can be detected with high precision; the whole detection circuit can be protected, and the service life is prolonged.

Description

Circuit detection pen

Technical Field

The utility model relates to the technical field of circuit detection, in particular to a circuit detection pen.

Background

The circuit test pencil is also called test pencil, which is called test pencil for short; is an electrician tool, the basic function of which is to test whether the wire is charged or not. Typically there is a neon bulb in the pen body, which if illuminated at the time of testing indicates that the wire is live or is live. The pen point and the pen tail of the electroprobe are made of metal materials, and the pen holder is made of insulating materials. When the test pencil is used, a user must touch the metal part at the tail end of the test pencil by hand, otherwise, because a charged body, the test pencil, a human body and the ground do not form a loop, neon bulbs in the test pencil cannot emit light to cause misjudgment, and the charged body is considered to be uncharged. Because the resistance of the test pencil is very large, the risk is not worried about. When in use, the hand does not need to contact the pen point, so as to prevent the occurrence of electric shock accidents.

The existing test pencil for detecting the automobile circuit usually has requirements on the magnitude of measured voltage, the measured voltage is required to be more than 5V under the general condition, and the accuracy of the currently used automobile circuit detection pencil is lower, so that the practicability of the whole device is lower.

In order to solve the above problems, how to design a circuit detection pen with convenient use and high detection precision is an urgent need to solve at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit detection pen to solve the problems in the background technology.

The embodiment of the utility model is realized by the following steps:

the embodiment of the application provides a circuit detection pen, which comprises an electroprobe main body, wherein the electroprobe main body comprises a handheld part and a detection part, a circuit board is arranged in the handheld part, the circuit board is integrated with a detection circuit, and the detection circuit is connected with the detection part;

the end part of the hand-held part is also provided with a conduction part connected with the detection circuit.

In some embodiments of the present invention, the conducting portion is detachably connected to the clamping assembly.

In some embodiments of the present invention, the clamping assembly includes a conductive clip and a connecting wire, and a clamping end of the conductive clip is electrically connected to the connecting wire; the other end of the connecting wire is detachably connected with the conduction part.

In some embodiments of the present invention, a sleeve ring is disposed at the other end of the connection wire, and the sleeve ring is in insertion fit with the conduction portion, and is electrically connected to the connection wire; the outer wall of conduction portion is provided with the external screw thread, and it is fixed through the nut between lantern ring and the conduction portion.

In some embodiments of the present invention, the connecting wire is further provided with a safety tube FU.

In some embodiments of the present invention, the detection circuit includes a battery, a voltage dependent resistor RV1, a light bulb L1, a light emitting diode D1, a light emitting diode D2, a resistor R1, a resistor R2, a selection switch SB1, a selection switch SB2, a selection switch SB3, and a voltmeter V;

the positive electrode of the battery is connected with one end of a selection switch SB3, and the other end of the selection switch SB3 is connected with a voltmeter V; one end of a selection switch SB2 is connected with the detection part, one contact at the other end of the selection switch SB2 is connected with the voltmeter V, the other contact is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of a selection switch SB1, one contact at the other end of the selection switch SB1 is connected with one end of a bulb L1, the other contact at the other end of the selection switch SB1 is connected with one end of a resistor R1, and the other end of the resistor R1 is respectively connected with the input end of a light-emitting diode D1 and the output end of a light-emitting diode D2; the output end of the light-emitting diode D1, the input end of the light-emitting diode D2 and the other end of the bulb L1 are connected with the cathode of the battery;

one end of the piezoresistor RV1 is connected with the negative electrode of the battery, and the other end of the piezoresistor RV1 is connected with the detection part.

In some embodiments of the present invention, one end of the safety tube FU is connected to the voltmeter V through a connecting wire, and the other end of the safety tube FU is electrically connected to the clamping end of the conductive clip through a connecting wire.

In some embodiments of the utility model, an end of the conduction part, which faces away from the handheld part, forms a connection part with a conical structure.

In some embodiments of the present invention, an insulating sleeve is disposed on an outer wall of the detecting portion, and the insulating sleeve is connected to the handheld portion.

In some embodiments of the utility model, the edges and corners of the handle are provided with transition arcs.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects: when the test pencil is used, namely, the holding of the holding part and the abutting of the detection part and the detection point form a loop between the test pencil main body and the detection point and the ground so as to achieve the purpose of detecting voltage; the detection circuit positioned in the handheld part can realize the test of the voltage of the detection point, and the circuit can detect smaller voltage and achieve the effect of improving the precision, so that the whole device has higher practicability;

the detected voltage value can be displayed through the arranged light-emitting diodes D1 and D2 for the detection personnel to view; when the voltage is detected, the voltage can be directly tested; the bulb L1 adopts the arrangement of an LED lamp, so that the power of the bulb is smaller, and the aim of detecting a smaller number of voltage can be fulfilled; and the piezoresistor RV1 is used for protecting the whole detection circuit and prolonging the service life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic overall structure diagram according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the interior of the handle according to the embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 1;

fig. 4 is a schematic diagram of the connection between the detection circuit and the fuse FU according to the embodiment of the present invention.

Icon: 1. a test pencil body; 2. a hand-held portion; 3. a detection unit; 4. a circuit board; 6. a conduction part; 7. a conductive clip; 8. connecting a lead; 9. a collar; 10. a nut; 11. a fuse tube FU; 12. a connecting portion; 13. and an insulating sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when using, the terms are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

Referring to fig. 1 to 4, fig. 1 is a schematic overall structure diagram according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of the interior of the hand-held portion 2 according to the embodiment of the present invention; FIG. 3 is an enlarged view of FIG. 1 at A; fig. 4 is a schematic diagram illustrating the connection between the detection circuit and the fuse FU11 according to the embodiment of the present invention.

The embodiment of the application provides a circuit detection pen, which comprises an electroprobe main body 1, wherein the structure of the electroprobe main body 1 is the same as or similar to that of an existing test pen, and the electroprobe main body 1 comprises a handheld part 2 and a detection part 3, namely the electroprobe main body 1 comprises the handheld part 2 and the detection part 3, the handheld part 2 is used for detecting the holding of hands of people, and under the normal condition, an insulating layer is arranged on the outer wall of the handheld part 2 and used for separating current or voltage in the handheld part 2 to avoid the electric shock; the detection part 3 is a metal rod with a generally columnar structure, as shown in fig. 1; a circuit board 4 is arranged inside the handheld part 2, and a detection circuit is integrated on the circuit board 4 and is connected with the detection part 3; of course, the detection circuit may be directly embedded in the hand-held portion 2 without providing the circuit board 4.

The end of the hand-held portion 2 is also provided with a conduction portion 6 connected to the detection circuit. The conductive part 6 functions to complete the detection of the circuit voltage by forming a circuit between the detecting body and the ground, and the conductive part 6 is usually held or pressed by the hand of the detecting person.

When the test pencil is used, namely, the test pencil main body 1 and the detection point are in loop with the ground through the holding of the holding part 2 and the abutting of the detection part 3 and the detection point, so that the purpose of detecting voltage is achieved; and through the detection circuit that is located handheld portion 2 inside for can realize the test to the check point voltage, and through this circuit, just also make and to detect less voltage, and can reach the effect of improving precision, thereby make whole device have higher practicality.

In practical use, when the whole device is disassembled, for example, the use time is long, and when batteries need to be replaced, the cover is arranged on the back surface of the device and is fixed by four stacking wires, and when the cover needs to be disassembled, the stacking wires are disassembled, so that the circuit boards in the stacking wires can be taken out, and the batteries can be replaced.

Example 2

In this embodiment, the conduction part 6 is detachably connected to a clamping member.

Through the arranged clamping assembly, when the voltage of the detection point is detected, a detection person does not need to touch the conduction part 6; namely, the purpose of forming a loop is realized through the clamping assembly, so that the effect of detecting the voltage is achieved.

Example 3

In this embodiment, the clamping assembly includes a conductive clip 7 and a connecting wire 8, and a clamping end of the conductive clip 7 is electrically connected to the connecting wire 8; the other end of the connecting wire 8 is detachably connected to the conduction part 6.

That is, the conductive clip 7 clamps any one of the conductors in the environment before use, and the connection of the connecting wire 8 to the conduction part 6 allows the detection point to form a loop.

Example 4

In this embodiment, the other end of the connecting wire 8 is provided with a collar 9 that is inserted into the conducting portion 6, and the collar 9 is electrically connected to the connecting wire 8; the outer wall of the conduction part 6 is provided with external threads, and the lantern ring 9 and the conduction part 6 are fixed through a nut 10.

As shown in fig. 1 and fig. 2, the clamping assembly is fixed by the nut 10 through the insertion of the collar 9 and the conduction part 6, so that the clamping assembly is fast and convenient to operate in the mounting and dismounting processes, and has high practicability in use and storage.

Example 5

In the present embodiment, the connecting wire 8 is further provided with a fuse FU 11.

Through the fuse that sets up to make the security of whole device improve greatly.

Example 6

In the present embodiment, as shown in fig. 4, the detection circuit includes a battery, a voltage dependent resistor RV1, a light bulb L1, a light emitting diode D1, a light emitting diode D2, a resistor R1, a resistor R2, a selection switch SB1, a selection switch SB2, a selection switch SB3, and a voltmeter V;

the positive electrode of the battery is connected with one end of a selection switch SB3, and the other end of the selection switch SB3 is connected with a voltmeter V; one end of a selection switch SB2 is connected with the detection part 3, one contact at the other end of the selection switch SB2 is connected with the voltmeter V, the other contact is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of a selection switch SB1, one contact at the other end of the selection switch SB1 is connected with one end of a bulb L1, the other contact at the other end of the selection switch SB1 is connected with one end of a resistor R1, and the other end of the resistor R1 is respectively connected with the input end of the light-emitting diode D1 and the output end of the light-emitting diode D2; the output end of the light-emitting diode D1, the input end of the light-emitting diode D2 and the other end of the bulb L1 are connected with the cathode of the battery;

one end of the varistor RV1 is connected to the negative electrode of the battery, and the other end of the varistor RV1 is connected to the detection unit 3.

The detected voltage value can be displayed through the arranged light-emitting diodes D1 and D2 for the detection personnel to view; when the voltage is detected, the voltage can be directly tested; the bulb L1 adopts the LED lamp to set, so that the power of the bulb is smaller, and the purpose of detecting the voltage with smaller numerical value can be achieved. And the function of piezo-resistor RV1 is the whole detection circuit of protection promptly to make can normal use, increase of service life.

And through the digital display pipe that sets up, namely emitting diode D1 and emitting diode D2, the insulating layer that the handheld portion 2 outer wall cup joints is transparent material to have certain elasticity, so that can operate a plurality of switches that are located circuit board 4.

Example 7

In this embodiment, one end of the fuse FU11 is connected to the voltmeter V through the connecting wire 8, and the other end of the fuse FU11 is electrically connected to the clamping end of the conductive clip 7 through the connecting wire 8.

Example 8

In the present embodiment, the end of the conduction part 6 away from the handle 2 forms a connection part 12 with a tapered structure.

As shown in fig. 3, the tapered connecting portion 12 also enables the conduction portion 6 to conveniently extend into the nut 10 when the nut 10 is connected with the conduction portion 6, thereby improving the convenience of installation.

Example 9

In this embodiment, the outer wall of the detecting part 3 is provided with an insulating sleeve 13 sleeved with the detecting part, and the insulating sleeve 13 is connected with the handheld part 2.

Through the insulating cover 13 that sets up, avoid when using, detection personnel's hand contacts detection portion 3, improves the installation nature.

Example 10

In this embodiment, both the edge and the corner of the handle 2 are provided with transition arcs.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A circuit detection pen is characterized by comprising an electroprobe main body, wherein the electroprobe main body comprises a handheld part and a detection part, a circuit board is arranged in the handheld part, a detection circuit is integrated on the circuit board, and the detection circuit is connected with the detection part;

the end part of the handheld part is also provided with a conduction part connected with the detection circuit.

2. The circuit testing pen of claim 1, wherein the conducting portion is detachably connected with a clamping assembly.

3. The circuit testing pen of claim 2, wherein the clamping assembly comprises a conductive clip and a connecting wire, and the clamping end of the conductive clip is electrically connected with the connecting wire; the other end of the connecting wire is detachably connected with the conduction part.

4. The circuit detection pen according to claim 3, wherein a collar is disposed at the other end of the connection wire and is engaged with the conduction portion, and the collar is electrically connected to the connection wire; the outer wall of conduction portion is provided with the external screw thread, it is fixed through the nut between lantern ring and the conduction portion.

5. The circuit testing pen according to claim 3, wherein the connecting wire is further provided with a safety tube FU.

6. The circuit detection pen as claimed in claim 1, wherein the detection circuit comprises a battery, a voltage dependent resistor RV1, a light bulb L1, a light emitting diode D1, a light emitting diode D2, a resistor R1, a resistor R2, a selection switch SB1, a selection switch SB2, a selection switch SB3 and a voltmeter V;

7. The circuit detecting pen according to claim 5, wherein one end of the fuse FU is connected to the voltmeter V through a connecting wire, and the other end of the fuse FU is electrically connected to the clamping end of the conductive clip through a connecting wire.

8. The circuit testing pen according to claim 4, wherein the end of the conduction part facing away from the handle part forms a connection part with a conical structure.

9. The circuit detection pen according to claim 1, wherein the outer wall of the detection portion is provided with an insulating sleeve sleeved with the detection portion, and the insulating sleeve is connected with the handheld portion.

10. The circuit testing pen of claim 1, wherein the edges and corners of the hand-held portion are provided with transition arcs.