CN203858316U - Portable instrument for checking completed circuit, open circuit and short circuit condition of 5-core cable - Google Patents

Abstract

The utility model discloses a portable instrument for checking the passage, open circuit and short circuit of a 5-core cable. The 5-core cable socket group A (3) and the 5-core cable socket group B (6) are two sets of socket groups arranged correspondingly. There are several sockets matching the plugs of the 5-core cable (1) to be checked; the cores of each socket of the 5-core cable socket group A (3) are charged by connecting the built-in battery through the light-emitting diode group (4) Correspondingly, the core of each socket of the 5-core cable socket group B (6) is connected to the other pole of the power supply in the built-in battery charging port (5) through the contact button group (2), The cores of the corresponding group of sockets on the 5-core cable socket group A (3) and the 5-core cable socket group B (6) are connected to the two ends of the same 5-core cable (1). The utility model is convenient to carry, simple to operate, intuitive to display and saves time.

Description

A portable instrument for checking 5-core cables for path, break and short circuits

technical field

The utility model belongs to the technical field of cable state inspection devices, in particular to an instrument for checking the path, disconnection and short circuit of 5-core cables which are required to be inspected before use in aerospace static tests.

Background technique

In the static test of rocket type products, a large number of 5-core cables are used to transmit signals between the sensor and the measuring end, such as transmitting force sensor, displacement sensor signals, etc. The smoothness of the signal transmission line directly affects the success of the static test of the model product. Therefore, the static test procedure stipulates that the passage, open circuit and short circuit of each type of cable used must be checked before the test.

Due to some factors such as the large size of the rocket model and the fact that one end of the 5-core cable has been fixed in the test plant, the inspection of the 5-core cable is usually carried out at the test site, which requires the inspection tool to be portable. The usual inspection method is: turn the multimeter to the on-off position of the wire, measure the on-off situation of a certain core wire in the cable with a test pen, and then use this method to check the cable one by one. But this method is slow, and the short circuit between the core wires of the cable cannot be directly checked. In addition, because the pen of the multimeter is relatively thick, and the plug of the 5-core cable used is small, the pin spacing corresponding to each core wire is narrow. , It is more inconvenient to operate during inspection. When a large number of 5-core cables are used in the test, the inspection workload is heavy, and only the inspection work consumes a lot of time, thereby delaying the test process.

Therefore, an instrument with strong portability, reduced inspection time, easy operation, and intuitive display is required to inspect the 5-core cable.

Contents of the invention

The purpose of this utility model is to overcome the defects of the prior art and provide a 5-core cable path, open circuit and short circuit inspection instrument with portability, reduced inspection time, easy operation, and intuitive display, so as to inspect the cable according to the test procedures. state, reducing the time of inspection.

In order to achieve the above object, the technical solution adopted by the utility model is: a portable instrument for checking the passage, open circuit and short circuit of the 5-core cable, including the contact button group 2, the 5-core cable socket group A, and the light-emitting second group for indication. Level tube group, built-in battery charging port, and 5-core cable socket group B; among them, 5-core cable socket group A and 5-core cable socket group B are two sets of socket groups that are set up correspondingly. The plug of the 5-core cable matches the socket; the core of each socket of the 5-core cable socket group A is connected to the power supply in the charging port of the built-in battery through the light-emitting diode group; correspondingly, the core of each socket of the 5-core cable socket group B The cores are all connected to the other pole of the power supply in the charging port of the built-in battery through the contact button group, and the cores of the corresponding group of sockets on the 5-core cable socket group A and the 5-core cable socket group B are connected to the two ends of the same 5-core cable.

The 5-core cable socket group A and the 5-core cable socket group B are arranged symmetrically up and down on the portable instrument, and one side of the portable instrument between the 5-core cable socket group A and the 5-core cable socket group B is used as the operation panel, and the corresponding touch The buttons of the dot button group and the indicator lights of the light-emitting diode group are arranged symmetrically on the operation panel.

The utility model has the advantages of: (1) it is powered by a battery and has portability; (2) it only needs to touch five electric shock buttons one by one to obtain the on-off and short-circuit status of the 5-core cable, which is easy to operate and saves time ; (3) Use light-emitting diodes to indicate the on-off status of each core wire, and the display is intuitive. At present, the utility model has been successfully used in the static test of rocket type products.

Description of drawings

Fig. 1 is the outline schematic diagram of the utility embodiment;

Fig. 2 is a schematic circuit diagram of the utility model.

In the figure, 1-5-core cable, 2-contact button group, 3-5-core cable socket group A, 4-light-emitting diode group, 5-built-in battery charging port, 6-5-core cable socket group B, A , B-contact.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The principle of the utility model is: the checked 5-core cable is used as a part of the designed circuit loop. When a certain core wire of the cable is connected, press the corresponding contact, the circuit circuit works normally, and only the corresponding light-emitting diode is on; when a certain core wire of the cable is disconnected, press the corresponding contact, the circuit circuit does not work normally, The corresponding light-emitting diodes are not on; when several core wires of the cable are short-circuited, press the contact corresponding to one of the cores, and the light-emitting diodes corresponding to the short-circuited cores are on; when two core wires of the cable are in sequence When it is wrong, press the contact corresponding to one of the cores, the light-emitting diode corresponding to the wrong core is on, and the light-emitting diode corresponding to itself is not on.

Based on the above principles, the utility model is shown in Figure 1, which includes a contact button group 2, a 5-core cable socket group A 3, a light-emitting diode group 4 for indication, a built-in battery charging port 5, and a 5-core cable socket group B 6 components; Among them, the 5-core cable socket group A 3, the 5-core cable socket group B 6 are two sets of socket groups correspondingly set, all of which contain 3 sockets that match the plug of the 5-core cable 1 to be checked; 5-core The core of each socket of the cable socket group A 3 is connected to the power supply in the built-in battery charging port 5 through the light-emitting diode group 4; correspondingly, the core of each socket of the 5-core cable socket group B 6 passes through the contact button Group 2 is connected to the other pole of the power supply in the built-in battery charging port 5, and the cores of the corresponding group of sockets on the 5-core cable socket group A 3 and the 5-core cable socket B group 6 are connected to the two ends of the same 5-core cable 1.

For easy operation, the 5-core cable socket group A 3 and the 5-core cable socket group B 6 are arranged symmetrically up and down on the portable instrument, and the side of the portable instrument between the 5-core cable socket group A 3 and the 5-core cable socket group B 6 is used as the operation The panel, the buttons of the corresponding contact button group 2 and the indicator lights of the light-emitting diode group 4 are arranged symmetrically on the operation panel.

Figure 2 is a schematic diagram of the internal circuit, and its label definitions are the same as those in Figure 1. Take this picture as an example, when contact A of contact button group 2 is touched. If the core wire corresponding to the A contact is open, the circuit where the A contact is located is turned on, and the current will flow through the light-emitting diode B to make it glow; if the core wire corresponding to the A contact is disconnected, the circuit where the A contact is located If the circuit is not conducting, LED B is not bright; if the core wire corresponding to A contact is short-circuited with other core wires, not only LED B is on, but also other LEDs are on, so it is known that those core wires are short-circuited.

During inspection, the 5-core cable 1 is connected to a certain socket in Group A 3 of the 5-core cable socket and the corresponding socket in Group B 6 of the 5-core cable socket according to the different plugs; touch each button of the contact button group 2 respectively. The contact is used to determine the open circuit and short circuit of the corresponding core wire according to the light-emitting diode group 4 for indication.

The above embodiments of the present utility model have been described in detail. The above-mentioned implementation is only the optimal embodiment of the present utility model, but the present utility model is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, Various changes can also be made without departing from the purpose of the utility model.

Claims (2)

1. A portable instrument for checking 5-core cable access, open circuit and short-circuit situation, characterized in that it includes contact button group (2), 5-core cable socket A group (3), light-emitting diode group (4) for indicating ), the built-in battery charging port (5), and the 5-core cable socket group B (6); among them, the 5-core cable socket group A (3), and the 5-core cable socket group B (6) are two corresponding sets of socket groups , all of which contain several sockets that match the plugs of the 5-core cable (1) to be checked; the cores of each socket of the 5-core cable socket group A (3) are connected to the built-in battery through the light-emitting diode group (4) The power supply in the charging port (5); correspondingly, the core of each socket of the 5-core cable socket group B (6) is connected to the other pole of the power supply in the built-in battery charging port (5) through the contact button group (2) , The cores of the corresponding group of sockets on the 5-core cable socket group A (3) and the 5-core cable socket group B (6) are connected to the two ends of the same 5-core cable (1). 2. A portable instrument for checking 5-core cable access, open circuit and short-circuit situation as claimed in claim 1, characterized in that 5-core cable socket group A (3) and 5-core cable socket group B (6) are in the portable instrument Set up and down symmetrically, one side of the portable instrument between the 5-core cable socket group A (3) and the 5-core cable socket group B (6) is used as the operation panel, and the buttons of the corresponding contact button group (2) and the light-emitting secondary The indicator lamps of the tube group (4) are arranged symmetrically on the operation panel.