Test pencil

Abstract

The utility model discloses a test pencil, an inductive probe installation shell is fixedly installed at one end of a shell, the inductive probe installation shell is made of a transparent material, a circuit board and a battery are installed in the shell and are electrically connected with each other, a control module is installed on the circuit board, and the control module is electrically connected with the inductive probe installation shell. At least part of the inductive probe is contained in the inductive probe installation shell and electrically connected with the circuit board, the LED lamp is installed in the inductive probe installation shell and electrically connected with the circuit board, and the LCD display screen is installed on the outer shell and electrically connected with the circuit board. The control key is arranged on the shell and is electrically connected with the circuit board; a voltage value is obtained through testing of the inductive probe and is sent to the control module through the circuit board, and the control module displays the voltage value obtained through testing on the LCD display screen after receiving a control signal, so that a worker using the test pencil can visually obtain the tested voltage value.

Description

Technical Field

[0001] The utility model relates to the technical field of an electric test pencil, in particular to an electric test pencil. Background Art

[0002] A test pen, also called a voltage tester or simply "electrician's pen," is an electrical tool used to test whether electrical wires are live. The pen contains a neon bulb. If it glows during testing, it indicates the wire is live or has a live wire. The tip and tail of the test pen are made of metal, while the shaft is made of insulating material. When using a test pen, be sure to touch the metal end of the test pen. Otherwise, the neon bulb will not glow because the charged object, the test pen, the body, and the ground are not connected. This can lead to a false positive, resulting in the false positive.

[0003] At present, traditional test pens can usually only indicate the presence or absence of voltage through sound or light, but cannot intuitively display the voltage value, which brings inconvenience to the staff using the test pens. Utility Model Content

[0004] Based on this, it is necessary to provide a voltage tester that can directly display the measured voltage value.

[0005] A test pen includes a shell, a sensing probe, a sensing probe mounting shell, a circuit board, a control module, a battery, at least one LED light, an LCD display, and a control button; the sensing probe mounting shell is fixedly mounted on one end of the shell, the sensing probe mounting shell is made of a transparent material, the circuit board and the battery are mounted in the shell and electrically connected to each other, the control module is mounted on the circuit board, the sensing probe is at least partially accommodated in the sensing probe mounting shell and electrically connected to the circuit board, the LED light is mounted in the sensing probe mounting shell and electrically connected to the circuit board, the LCD display is mounted on the shell and electrically connected to the circuit board, and the control button is mounted on the shell and electrically connected to the circuit board.

[0006] In one embodiment, the tester further includes an A / D conversion module, which is mounted on the circuit board and electrically connected to the control module.

[0007] In one embodiment, there are multiple LED lights, which are arranged in a ring shape on the inner layer of the sensor probe installation shell.

[0008] In one embodiment, the voltage tester further includes a buzzer, which is mounted on the housing and electrically connected to the circuit board.

[0009] In one embodiment, the test pen also includes a pen hanger, which includes a bottom cover and a hanger, two abutment members are symmetrically arranged at a preset position of the bottom cover, and there is a gap of a preset distance between the two abutment members. A position on the hanger that matches the gap has a protrusion, and the protrusion is accommodated in the gap.

[0010] In one embodiment, the bottom cover has a scale with scale values.

[0011] In one embodiment, the outer edge of the protrusion is a curved surface structure.

[0012] In one embodiment, the voltage tester further includes a power button, which is mounted on the housing and electrically connected to the circuit board.

[0013] In one embodiment, the LCD display screen is electrically connected to the circuit board via conductive adhesive.

[0014] In one embodiment, a backlight panel is installed at the bottom of the LCD display screen.

[0015] The above-mentioned test pen is equipped with a sensing probe, a sensing probe mounting shell, a circuit board, a control module, a battery, at least one LED light, an LCD display, and a control button. The voltage value is obtained by testing with the sensing probe and sent to the control module through the circuit board. After pressing the control button, the control module receives the control signal and displays the tested voltage value on the LCD display, so that the staff using the test pen can intuitively obtain the tested voltage value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the explosion structure of an electric test pencil according to an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the assembly structure of a test pencil according to an embodiment of the present invention;

[0018] Figure 3 for Figure 1 A schematic structural diagram of a pen hanger of an electric test pencil according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element. In contrast, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 1 、 Figure 2 As shown, a test pen includes a housing 1, a sensing probe 2, a sensing probe mounting housing 3, a circuit board 4, a control module, a battery 5, at least one LED light 6, an LCD display 7, and a control button 8; the sensing probe mounting housing 3 is fixedly mounted on one end of the housing 1, the sensing probe mounting housing 3 is made of a transparent material, the circuit board 4 and the battery 5 are mounted in the housing 1 and are electrically connected to each other, the control module is mounted on the circuit board 4, the sensing probe 2 is at least partially accommodated in the sensing probe mounting housing 3 and is electrically connected to the circuit board 4, the LED light 6 is mounted in the sensing probe mounting housing 3 and is electrically connected to the circuit board 4, the LCD display 7 is mounted on the housing 1 and is electrically connected to the circuit board 4, and the control button 8 is mounted on the housing 1 and is electrically connected to the circuit board 4;

[0023] The test pen also includes an A / D conversion module, which is installed on the circuit board 4 and electrically connected to the control module. The A / D conversion module converts the analog voltage signal obtained by the sensing probe 2 into a digital voltage signal and sends it to the control module.

[0024] The LCD display screen 7 is electrically connected to the circuit board 4 via a conductive adhesive 11 ; a backlight panel 12 is installed at the bottom of the LCD display screen 7 .

[0025] The end of the tester has metal contacts that are electrically connected to the circuit board 4. To test whether a product is live, the sensor probe 2 touches the product under test, and your hand touches the metal contacts, forming a closed circuit. When the LED light 6 illuminates, the product is live. If the LED light 6 does not illuminate, the product is dead. The sensor probe mounting housing 3 is made of a transparent material, so the light from the LED light 6 can pass through the sensor probe mounting housing 3.

[0026] When it is necessary to measure the actual voltage value of the product to be tested, press the control button 8. After receiving the control signal, the control module controls the A / D conversion module to start, and the sensing probe 2 is brought into contact with the product to be tested. The sensing probe 2 converts the acquired voltage value through the A / D conversion module and sends it to the control module. The control module controls the LCD display 7 to display the specific voltage value.

[0027] In this way, the test pen, through the coordinated arrangement of the sensing probe 2, the sensing probe mounting shell 3, the circuit board 4, the control module, the battery 5, at least one LED lamp 6, the LCD display 7, and the control button 8, obtains the voltage value through the sensing probe 2 test and sends it to the control module through the circuit board 4. After pressing the control button 8, the control module receives the control signal and displays the tested voltage value on the LCD display 7, so that the staff using the test pen can intuitively obtain the tested voltage value.

[0028] In one embodiment, there are multiple LED lights 6 , which are arranged in a ring shape on the inner layer of the sensor probe mounting shell 3 .

[0029] In this way, the LED lamp 6 is arranged in a ring shape on the inner layer of the induction probe mounting shell 3. After the LED lamp 6 is lit, the light of the LED lamp 6 can be seen from different directions, and it can be quickly determined whether the product under test has power.

[0030] In one embodiment, the voltage tester further includes a buzzer, which is mounted on the housing 1 and electrically connected to the circuit board 4 .

[0031] In this way, when the product under test is charged, the control module controls the buzzer to emit a buzzing sound through the circuit board 4, which more intuitively reminds the tester that the product under test is charged.

[0032] like Figure 3 As shown, in one embodiment, the test pencil further includes a pen hanger 9, which includes a bottom cover 91 and a hanger 92. The bottom cover 91 has two symmetrically arranged abutment members 911 at a preset position, with a preset gap between the two abutment members 911. The hanger 92 has a protrusion 921 at a position adapted to the gap, and the protrusion 921 is accommodated in the gap. The outer edge of the protrusion 921 is a curved surface structure.

[0033] In this way, the outer edge of the protrusion 921 is a curved structure, which makes it convenient for the test pen to be worn and the clothes can be quickly slid into the pen pen holder 9.

[0034] Furthermore, through the coordinated arrangement of the two abutments 911 and the protrusion 921, when the test pen is worn on clothes, the two abutments 911 and the protrusion 921 respectively abut against the inner layer and outer layer of the clothes, so that the test pen will not fall off the clothes easily.

[0035] In one embodiment, the bottom cover 91 has a scale with scale values.

[0036] In this way, by setting the scale, the product that needs to be measured can be measured, making the application range of the test pencil wider.

[0037] In one embodiment, the voltage tester further includes a power button 10 , which is mounted on the housing 1 and electrically connected to the circuit board 4 .

[0038] In this way, when the power button 10 is pressed, the control module receives the control signal sent by the power button 10 and controls the sensing probe 2 and the A / D conversion module to start.

[0039] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A test pencil, characterized by: It includes a shell, a sensing probe, a sensing probe mounting shell, a circuit board, a control module, a battery, at least one LED light, an LCD display, and a control button; the sensing probe mounting shell is fixedly mounted on one end of the shell, the sensing probe mounting shell is made of a transparent material, the circuit board and the battery are mounted in the shell and electrically connected to each other, the control module is mounted on the circuit board, the sensing probe is at least partially accommodated in the sensing probe mounting shell and electrically connected to the circuit board, the LED light is mounted in the sensing probe mounting shell and electrically connected to the circuit board, the LCD display is mounted on the shell and electrically connected to the circuit board, and the control button is mounted on the shell and electrically connected to the circuit board.

2. The voltage tester according to claim 1, characterized in that: The test pen further includes an A / D conversion module, which is installed on the circuit board and electrically connected to the control module.

3. The voltage tester according to claim 1, characterized in that: There are multiple LED lights, which are arranged in a ring shape on the inner layer of the sensor probe installation shell.

4. The voltage tester according to claim 1, characterized in that: The test pencil further includes a buzzer, which is mounted on the housing and electrically connected to the circuit board.

5. The voltage tester according to claim 1, characterized in that: The test pen also includes a pen hanger, which includes a bottom cover and a hanger. Two abutment parts are symmetrically arranged at a preset position of the bottom cover, and there is a gap of a preset distance between the two abutment parts. A protrusion is provided at a position on the hanger that matches the gap, and the protrusion is accommodated in the gap.

6. The voltage tester according to claim 5, characterized in that: The bottom cover is provided with a scale having scale values.

7. The voltage tester according to claim 5, characterized in that: The outer edge of the protrusion is a curved surface structure.

8. The voltage tester according to claim 1, characterized in that: The test pen further includes a power button, which is installed on the housing and electrically connected to the circuit board.

9. The voltage tester according to claim 1, characterized in that: The LCD display screen is electrically connected to the circuit board via conductive adhesive.

10. The voltage tester according to claim 1, characterized in that: A backlight panel is installed at the bottom of the LCD display screen.

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