Number fast browsing instrument

Abstract

The utility model discloses a number fast browsing instrument, which comprises a connector socket RJ, a rectifier bridge U1, a voltage stabilizer U2, a switch K, a current-limiting resistor R and an LED (light-emitting diode) indicating lamp which are arranged on a PCB (printed circuit board), two ports of the connector socket RJ are connected with two AC ports of the rectifier bridge U1, two DC ports of the rectifier bridge U1 are connected to the input voltage end and the grounding end of the voltage stabilizer U2, the output voltage end of the voltage stabilizer U2 is connected to a pin 1 of the switch K, and a pin 3 of the switch K is connected to the other grounding end of the voltage stabilizer U2 through the current limiting resistor R and the LED indicator lamp. Two DC ports of the rectifier bridge U1 are connected in parallel with a capacitor C1; a capacitor C2 is connected in parallel between the voltage stabilizer U2 and the switch K; the PCB is provided with telescopic probes, and the two telescopic probes are respectively connected to an AC circuit between the wiring socket RJ and the rectifier bridge U1. According to the utility model, a traditional wire clamp connection wiring terminal is replaced, the wiring terminal strip can be rapidly connected through the telescopic probe, and rapid number checking is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric communication, and in particular relates to a number browsing device. Background Art

[0002] In coal mine work, the maintenance of fixed telephones above and below the mine includes but is not limited to changing landline numbers, transferring numbers from the central station to designated junction boxes, troubleshooting line faults, and installing designated numbers in specific locations. However, during the actual maintenance process, operators often encounter the following common problems:

[0003] 1. The wire clamp of the phone number checking machine is made of iron, which has poor conductivity and is prone to poor contact. In addition, the material is iron, and the clamp is prone to rust over time;

[0004] 2. The wire clamp needs to clamp the wire to work properly. When the wire has been crimped to the terminal in the underground junction box, poor contact often occurs due to the small terminal fixing screws, causing trouble for the number checking machine;

[0005] 3. The wire clamp and the cable are directly welded. Since the cable is too thin and the clamp is a movable part, the cable often breaks. Rust can also cause the clamp to break.

[0006] 4. The telephone wires in the mine are equipped with direct current, which may cause electric shock if they come into contact with the human body. In actual operation, especially when working at heights, due to the large number of wires and sweating, people are often electrocuted by telephone wires, which brings unnecessary risks to the investigation work;

[0007] 5. When troubleshooting line problems, the work is time-consuming and laborious due to the lack of professional tools. Summary of the invention

[0008] In order to solve the above problems, the utility model provides a number quick viewer, which has a simple structure, is easy to use, and is suitable for holding. When in use, it can quickly determine whether there is a number on the line through an LED indicator light.

[0009] The technical scheme adopted by the utility model is: a number scanning instrument, comprising a wiring socket RJ, a rectifier bridge U1, a voltage regulator U2, a switch K, a current limiting resistor R and an LED indicator light arranged on a PCB board; two ports of the wiring socket RJ are connected to two AC ports of the rectifier bridge U1, two DC ports of the rectifier bridge U1 are connected to an input voltage end and a ground end of the voltage regulator U2, an output voltage end of the voltage regulator U2 is connected to one end of the switch K, and the other end of the switch K is connected to another ground end of the voltage regulator U2 through a current limiting resistor R and an LED indicator light; two DC ports of the rectifier bridge U1 are connected in parallel with a capacitor C1; a capacitor C2 is connected in parallel between the voltage regulator U2 and the switch K; two retractable probes are arranged on the PCB board, and the two retractable probes are respectively connected to the AC line between the wiring socket RJ and the rectifier bridge U1.

[0010] Furthermore, the PCB board is provided with external connector pins, and the external connector pins are located on the AC line between the wiring socket RJ and the rectifier bridge U1; the external connector adopts a test hook.

[0011] Furthermore, a reinforcement hole is provided on the PCB board, and the reinforcement hole is located at the connection between the retractable probe and the PCB board.

[0012] The beneficial effects of the utility model are as follows: the utility model replaces the traditional wire clamp connection terminal, can quickly connect the terminal block through the retractable probe, realize fast number query, can also connect the wire head through the external connector to query the number, and can quickly judge whether the line has electricity through the LED indicator light. If there is electricity, the line has a number. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 A circuit diagram of the utility model;

[0015] In the figure: 1-PCB board, 2-external connector pins, 3-retractable probe, 4-reinforcement hole. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, the utility model is a number scanning instrument, the main body of which is composed of a PCB board 1. The PCB board is in a long strip shape, one end of which is provided with a wiring socket RJ, and the other end is provided with two retractable probes 3. The width of the two retractable probes 3 is the same as the spacing between the wiring terminals, and the top of the pin has a sharp part, which can break part of the oxide layer to increase conductivity and quickly insert into the wiring terminal row.

[0018] like Figure 2 As shown, the PCB board 1 is also provided with an MB6S rectifier bridge U1, a voltage regulator U2, a switch K, a current limiting resistor R and an LED indicator; the two ports of the wiring socket RJ are connected to the two AC ports of the rectifier bridge U1, the two DC ports of the rectifier bridge U1 are connected to the input voltage terminal VIN and the ground terminal GND of the voltage regulator U2, the output voltage terminal VOUT of the voltage regulator U2 is connected to one end of the switch K, and the other end of the switch K is connected to the other ground terminal GND of the voltage regulator U2 through the current limiting resistor R and the LED indicator; the two DC ports of the rectifier bridge U1 are connected in parallel with a capacitor C1; the voltage regulator U2 and the switch K are connected in parallel with a capacitor C2; the above two capacitors are used to protect the voltage regulator U2. Two retractable probes 3 are connected in parallel with the two external connector pins 2, and are both located in the middle of the AC line between the wiring socket RJ and the rectifier bridge U1, one on each side. Pin 2 of the external connector can be extended to connect an external connector. The external connector adopts a test hook. The external connector is used to connect the wire end for number checking and can play a greater role when inspecting circuits without terminal blocks.

[0019] A reinforcement hole 4 is provided on the PCB board, and the reinforcement hole 4 is located at the connection between the two retractable probes 3 and the PCB board. When the two retractable probes 3 are connected to the PCB board, the copper wire can be passed through the reinforcement hole 4, and the retractable probes 3 can be cross-bound and welded with the copper wire, so as to improve the connection strength between the probe and the circuit board.

[0020] When the utility model is used, the wiring socket RJ is inserted into the telephone line of the directory inquiry machine, the retractable probe 3 is inserted into the wiring terminal block, and the switch is pressed. If the LED indicator light is on, it means that the line is powered (there is a number); if the LED indicator light is off, it means that the line has no number, and the number can be quickly checked in conjunction with the directory inquiry machine.

[0021] The LED indicator light in the utility model adopts a blue LED, and the blue color has strong penetration, which is convenient for operators to observe.

Claims

1. A number browsing device, characterized in that: It includes a wiring socket RJ, a rectifier bridge U1, a voltage regulator U2, a switch K, a current limiting resistor R and an LED indicator light arranged on a PCB board; two ports of the wiring socket RJ are connected to two AC ports of the rectifier bridge U1, two DC ports of the rectifier bridge U1 are connected to an input voltage terminal and a ground terminal of the voltage regulator U2, an output voltage terminal of the voltage regulator U2 is connected to one end of the switch K, and the other end of the switch K is connected to another ground terminal of the voltage regulator U2 through a current limiting resistor R and an LED indicator light; two DC ports of the rectifier bridge U1 are connected in parallel with a capacitor C1; a capacitor C2 is connected in parallel between the voltage regulator U2 and the switch K; two retractable probes are arranged on the PCB board, and the two retractable probes are respectively connected to the AC line between the wiring socket RJ and the rectifier bridge U1.

2. A number browsing device according to claim 1, characterized in that: The PCB board is provided with external connector pins, and the external connector pins are located on the AC line between the wiring socket RJ and the rectifier bridge U1; the external connector adopts a test hook.

3. A number browsing device according to claim 1, characterized in that: The PCB board is provided with a reinforcement hole, and the reinforcement hole is located at the connection between the retractable probe and the PCB board.

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