CN202421400U - Checking tool for connection of multicore flat cables - Google Patents

Abstract

The utility model relates to a multi-core cable connection inspection tool, which comprises a pair of multi-core cable connection sockets for plugging into the two terminals of the multi-core cable to be tested, a power supply branch circuit and a group of light indicating branches, and a power supply branch circuit. The branch is composed of a power supply and a control switch connected in series. The number of light indicating branches is the same as the number of contacts of one of the multi-core cable connection sockets and is connected correspondingly. The other ends of each light indicating branch are connected together and connected to the power supply. One end of the power supply branch is connected, and the contacts of the other multi-core flat cable connection socket are connected together and connected with the other end of the power supply branch. The multi-core cable connection inspection tool of the utility model is simple in structure, easy to carry, and simple in detection operation. It can detect whether the cable is connected well before use, ensures that the connection between the cable and the socket terminal is correct, and is convenient and quick to use.

Description

A multi-core cable connection inspection tool

technical field

The utility model belongs to the field of electronic circuits, in particular to a multi-core cable connection inspection tool.

Background technique

In electronic circuits, multi-core cables are widely used, and it is very necessary to accurately and quickly test multi-core cables.

At present, there is no special test tool for the use of cable. Due to the relatively airtight structure of the connection joint of the multi-core cable, once there is a problem with the connection of the cable used, it is difficult to detect, and due to the inconvenience of operation, the test result is not necessarily accurate. Usually a set of cables includes multi-core thin wires, and it is a waste of time to test one by one.

Utility model content

The purpose of the utility model is to provide a multi-core cable connection inspection tool to solve the problem of inconvenient operation of the existing detection method.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a multi-core cable connection inspection tool, including a pair of multi-core cable connection sockets for inserting the two terminals of the multi-core cable to be tested, a power supply branch circuit and A group of light indicating branches, the power supply branch is composed of a power supply and a control switch connected in series, the number of the light indicating branches is the same as the number of contacts of one of the multi-core cable connection sockets and is connected to it correspondingly, each The other ends of the light indicating branches are connected together and connected with one end of the power supply branch, and the contacts of the other multi-core cable connection socket are connected together and connected with the other end of the power supply branch.

Each of the light indicating branches is respectively composed of an LED indicator light and a current limiting resistor connected in series.

The multi-core cable connection socket, power supply, control switch, LED indicator light and current limiting resistor are arranged on a circuit board and connected through the printed circuit board.

The multi-core cable connection socket is a 40-pin, 20-pin, 16-pin, 14-pin or 10-pin socket.

The multi-core cable connection inspection tool of the utility model is composed of a pair of multi-core connection sockets, a power supply, a control switch and an LED indicator to form an open-loop circuit. After connecting the cable, a closed-loop circuit is formed, and the LED on the indicator detection tool is indicated. It can accurately and quickly judge whether all the multi-core cables are connected in good condition. The tool is simple in structure, easy to carry, and easy to operate. It can detect whether the cable is connected well before use, to ensure that the connection between the cable and the socket terminal is correct, and it is convenient and quick to use.

Description of drawings

Fig. 1 is a schematic diagram of the multi-core flat cable connection inspection tool of the present invention.

Detailed ways

As shown in Figure 1 is the schematic diagram of the multi-core cable connection inspection tool of the present invention. It can be seen from the figure that the tool includes a pair of multi-core cable connection sockets and a power supply for plugging in the two terminals of the multi-core cable to be tested. A branch and a set of light indicating branches, the power supply branch is composed of a power supply and a control switch connected in series, the number of the light indicating branches is the same as the number of contacts of one of the multi-core cable connection sockets and connected correspondingly, The other ends of the light indicating branches are connected together and connected with one end of the power supply branch, and the contacts of the other multi-core cable connection socket are connected together and connected with the other end of the power supply branch. Each light indication branch is composed of an LED indicator light and a current limiting resistor connected in series.

The multi-core cable connection socket, power supply, control switch, LED indicator light and current limiting resistor of this embodiment constitute an open-loop circuit, which is arranged on a circuit board and connected with the circuit board to be tested. The wires form a current loop, and the quality of the cable is indicated by the light of the LED.

The above-mentioned pair of multi-core cable connection sockets include 40-pin, 20-pin, 16-pin, 14-pin and 10-pin respectively, and the above-mentioned types of plugs appear in pairs: one of them is A-n, and the other is B-n , n is the corresponding model number. In this embodiment, A-n is connected to the anode of the LED lamp, each pin connection corresponds to one LED lamp, and B-n is connected to the detection control switch K. One end of the control switch is connected to B-n of the multi-core cable connection socket, the other end is connected to the anode of the power supply P, and the control switch K controls the circuit current on and off; the cathode of the power supply P is connected to the current limiting resistors R1~Rn, and the current limiting resistor One end is connected to the cathode of the power supply, and the other end is connected to the cathode of each corresponding LED indicator light L1~Ln. The current limiting resistor is mainly used to limit the current of the circuit after the circuit is turned on, and the power supply provides voltage for the circuit.

In this embodiment, 40 LED indicator lights can be selected, and the pins of different types of cable connection sockets are respectively connected to the cathodes of the corresponding numbered LED indicator lights.

In Figure 1, Ln can be L40, L20, L16, L14, and L10, corresponding to socket connections with different numbers of pins. The testing tool can test 40-core, 20-core, 16-core, 14-core and 10-core wires respectively. the cable.

The entire open-loop circuit of the multi-core cable connection inspection tool is connected to the cable to form a closed-loop circuit. When testing, insert the two ends of the multi-core cable to be tested into the multi-core cable connection socket corresponding to the number of lines, and close the control Switch, the circuit is turned on, if the LED indicators corresponding to the pin numbers are all on, the cable is normal; if the LED indicators corresponding to the pin numbers are not on, the multi-core cable connection corresponding position is poor.

The utility model can adopt different forms of multi-core cable connection sockets according to different forms of multi-core cable connectors, and can adapt to multi-core cable connections with different numbers of cores and different joint forms.

Claims (4)

1. a multicore winding displacement connects checking tool; It is characterized in that: the gang socket of multicore winding displacement and power supply branch road and one group of light indication branch road of comprising a pair of multicore winding displacement two-terminal to be measured that is used to peg graft; Said power supply props up the route power supply and a CS composes in series; The quantity of said light indication branch road identical with the contact element number of one of them multicore winding displacement gang socket and with its corresponding connection; The other end of each light indication branch road links together and links to each other with an end of power supply branch road, and each contact element of another multicore winding displacement gang socket interconnects and links to each other with the other end of power supply branch road.

2. multicore winding displacement according to claim 1 connects checking tool, it is characterized in that: said each light indication branch road is composed in series by a LED light and a current-limiting resistance respectively.

3. multicore winding displacement according to claim 2 connects checking tool, and it is characterized in that: the gang socket of said multicore winding displacement, power supply, CS and LED light and current-limiting resistance are located on the wiring board, connect through the printed board line.

4. connect checking tool according to any described multicore winding displacement of claim 1-3, it is characterized in that: the gang socket of said multicore winding displacement is 40 pins, 20 pins, 16 pins, 14 pins or 10 needle sockets.

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