Device suitable for wire sequence inspection and insulation resistance detection of connector and measuring method thereof

Abstract

The invention relates to a wire sequence inspection and insulation resistance detection device suitable for a connector. The device comprises a wire sequence inspection assembly, an insulation resistance detection assembly, a wire end meter pen and a shell meter pen. The wire sequence inspection assembly comprises a plurality of wire sequence inspection circuits which are electrically connected with the connecting wires in the corresponding connectors through interfaces, and corresponding wire sequence indicators are arranged on the wire sequence inspection circuits; the insulation impedance detection assembly comprises an insulation impedance detection circuit electrically connected with the shell meter pen, and a resistance meter is arranged on the insulation impedance detection circuit; one end of the wire end meter pen is used for electrically contacting with the detection end, and the other end of the wire end meter pen is electrically connected with the plurality of wire sequence detection circuits and the insulation impedance detection circuit. Compared with the prior art, in the state that the shell meter pen is in contact with the conductive shell of the connector, through one-time point contact of the lead end meter pen, the line sequence and the insulation resistance are measured at the same time, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of detection devices, and relates to a device suitable for connector line sequence inspection and insulation impedance detection and a measurement method thereof. Background Art

[0002] Nowadays, connectors of various specifications are often used on the connection ports of industrial products as a way to connect the products to the outside. The use of connectors involves the connection between the connector and the internal circuit boards and other devices of the product. At present, in order to improve efficiency, the industry often uses direct plug-in, patch, and plug-in methods for quick connection. However, in some special military fields, there are still some connectors whose internal connections are connected by wire welding to ensure the connection reliability of the product.

[0003] The wire sequence check of the connector has only one end as the connector interface, and the other end is welded with wires, which poses the risk of incorrect wire sequence welding. For direct plug-in, mounting, and pairing, there is no need for inspection under normal circumstances. As standard parts processing manufacturers have strict processing methods and testing methods to ensure that the devices shipped are qualified.

[0004] Insulation resistance testing is required for all electronic products, because good insulation resistance can ensure that the equipment can withstand some external interference signals and operate normally, which can effectively improve the reliability and life of the product.

[0005] Line sequence inspection and insulation impedance testing are usually two processes. They need to be completed twice separately. Summary of the invention

[0006] The purpose of the present invention is to provide a device and a measuring method suitable for connector line sequence inspection and insulation impedance detection, which are used to synchronously realize the line sequence inspection and insulation impedance detection of the connector.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A first aspect of the present invention provides a device for checking the wiring sequence and insulation impedance of a connector. The connector to be tested includes a plurality of connecting wires, an interface, and a conductive shell. One end of the plurality of connecting wires is used as a detection end, and the other end is respectively connected to the interface.

[0009] The device includes a line sequence check component, an insulation impedance detection component, and a conductor end test lead and a shell test lead;

[0010] The line sequence inspection component comprises a plurality of line sequence inspection circuits electrically connected to corresponding connecting wires through interfaces, and the line sequence inspection circuits are provided with corresponding line sequence indicators;

[0011] The insulation impedance detection component comprises an insulation impedance detection circuit electrically connected to the housing test lead, and a resistance meter is provided on the insulation impedance detection circuit;

[0012] One end of the conductor end test lead is used for electrically contacting the detection end, and the other end is electrically connected to a plurality of line sequence inspection circuits and insulation impedance detection circuits respectively.

[0013] Further, the line sequence check component includes a connector connected to the interface, a plurality of line sequence check wires connected to the connector, and a line sequence check power supply;

[0014] A plurality of line sequence indicators are respectively connected in series between corresponding line sequence inspection wires and a line sequence inspection power supply.

[0015] Furthermore, the line sequence indicator is an indicator light.

[0016] Furthermore, the line sequence inspection component includes 35 to 40 line sequence indicators.

[0017] Furthermore, the insulation impedance detection circuit is also provided with an insulation impedance detection power supply.

[0018] Furthermore, the line sequence check power supply and the insulation impedance detection power supply are power supplies that do not share a common ground.

[0019] Furthermore, the resistance meter is electrically connected to the alarm.

[0020] Furthermore, the device also includes a power switch and a power status indicator light.

[0021] Furthermore, the device also includes a shell.

[0022] A second aspect of the present invention provides a line sequence inspection and insulation impedance detection method based on the above device, comprising: connecting a plurality of line sequence inspection circuits to a plurality of connecting wires respectively, and electrically contacting a housing test lead with a conductive housing of a connector to be tested;

[0023] Make the test leads at the wire ends electrically contact the detection ends of the connecting wires in turn;

[0024] The connected wire sequence inspection circuit is determined according to the responding wire sequence indicator to complete the wire sequence inspection; at the same time, the reading of the resistance meter is compared with the set value to complete the insulation impedance detection.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1) In the present invention, when the outer shell test lead contacts the conductive shell of the connector, the line sequence and insulation impedance are measured simultaneously through a single touch of the wire end test lead, thereby improving the operation efficiency;

[0027] 2) In the process of implementing the detection, if the line sequence is wrong, the corresponding line sequence of the error can be known immediately; the troubleshooting is simple;

[0028] 3) The present invention uses a joint to connect the interface of the connector, thereby avoiding touching the connector interface during the test process and reducing the risk of damage to the connector interface;

[0029] 4) Due to the small distance between the contacts in the connector interface, the original detection method is to use a multimeter probe to touch, which is bound to cause mis-touch, resulting in misjudgment or affecting efficiency. The detection device used in the new detection method adopts connector docking, and the internal circuit board design has no misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a device suitable for connector line sequence inspection and insulation impedance detection in the present invention;

[0031] Figure 2 It is a schematic diagram of a detection circuit suitable for a connector line sequence inspection and insulation impedance detection device in the present invention;

[0032] Description of the markings in the figure:

[0033] 1-connector, 2-wire end test lead, 3-housing test lead, 4-line sequence indicator, 5-resistance meter, 6-line sequence check wire, 7-line sequence check power supply, 8-insulation impedance detection power supply, 9-power switch, 10-power status indicator, 11-alarm, 12-connector. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0037] Example:

[0038] like Figure 1 and Figure 2The device shown is suitable for connector line sequence inspection and insulation impedance detection. The connector 1 to be tested includes multiple connecting wires, an interface, and a conductive shell; one end of the multiple connecting wires is used as a detection end, and the other end is respectively connected to the interface;

[0039] The device includes a line sequence check component, an insulation impedance detection component, a wire end probe 2 and a shell probe 3; wherein the line sequence check component includes a plurality of line sequence check circuits electrically connected to corresponding connecting wires through an interface, and a corresponding line sequence indicator 4 is provided on the line sequence check circuit; the insulation impedance detection component includes an insulation impedance detection circuit electrically connected to the shell probe 3, and a resistance meter 5 is provided on the insulation impedance detection circuit; one end of the wire end probe 2 is used to electrically contact the detection end, and the other end is electrically connected to a plurality of line sequence check circuits and insulation impedance detection circuits respectively. That is, the present embodiment simultaneously completes the two tasks of line sequence detection and insulation impedance measurement through one touch, and has the advantages of low cost, high efficiency, strong compatibility, and simple operation.

[0040] Multiple line sequence inspection circuits are electrically connected to one end of the corresponding connecting wire through the interface. At this time, the line sequence inspection loop is connected by electrically contacting the wire end test lead 2 with the detection end of the connecting wire. The corresponding relationship between the detection end of the connecting wire and the connection end at the interface is determined by the line sequence indicator 4 that reacts when the loop is connected, thereby completing the line sequence inspection. When the shell test lead 3 and the wire end test lead 2 are electrically connected to the connector 1 to be tested at the same time, the insulation impedance detection loop is connected, and the electrical insulation performance of the connector 1 to be tested is judged according to the resistance value reflected by the resistance meter 5, thereby completing the insulation impedance inspection.

[0041] In some specific embodiments, the line sequence check component includes a connector 12 connected to the interface, a plurality of line sequence check wires 6 connected to the connector 12, and a line sequence check power supply 7; a plurality of line sequence indicators 4 are respectively connected in series between the corresponding line sequence check wires 6 and the line sequence check power supply 7. More specifically, the line sequence indicator 4 is an indicator light.

[0042] In some specific embodiments, the number of line sequence check circuits is not less than the number of connecting wires, and more specifically, the line sequence check assembly includes 35 to 40 line sequence indicators 4. In this embodiment, 37 indicator lights are used to detect a 37-core connector, and the connector 12 is a 37-pin connector 12. The 37-pin connector can also be tested through an adapter cable compatible with all products with 37 pins or less connectors, and has strong compatibility.

[0043] In some specific embodiments, the insulation impedance detection circuit is further provided with an insulation impedance detection power supply 8 for providing electrical energy for the line sequence indicator 4 to respond.

[0044] In some specific embodiments, the line sequence check power supply 7 and the insulation impedance detection power supply 8 are power supplies that do not share a common ground.

[0045] In some specific embodiments, the resistance meter 5 is electrically connected to the alarm 11. More specifically, the alarm 11 is an acoustic alarm 11, an optical alarm 11 or an acoustic and optical alarm 11. In this embodiment, when the insulation impedance is less than 20MΩ, a red alarm light is turned on, accompanied by an alarm sound.

[0046] In some specific embodiments, the device further includes a power switch 9 and a power status indicator light 10 for turning on and off the insulation impedance detection power supply 8 or the line sequence check power supply 7 .

[0047] In some specific embodiments, the device further comprises a housing.

[0048] A line sequence inspection and insulation impedance detection method based on the above device comprises: connecting a plurality of line sequence inspection circuits to a plurality of connecting wires respectively, and making the shell test lead 3 electrically contact with the conductive shell of the connector 1 to be tested;

[0049] Make the test lead 2 at the wire end electrically contact with the detection end of the connecting wire in turn;

[0050] The connected line sequence inspection circuit is determined according to the line sequence indicator 4 that responds, and the line sequence inspection is completed; at the same time, the indication of the resistance meter 5 is compared with the set value to complete the insulation impedance detection.

[0051] In some specific embodiments, Figure 1 The operating steps of the device are described in detail:

[0052] S1: Connect the power cord to the device and turn on the power switch 9;

[0053] S2: Use a connector cable to connect the connector to be tested and the connector 12 on the device;

[0054] S3: Connect the shell probe 3 to the metal shell of the connector to be tested, and touch the wire end probe 2 to the wire welding point of the connector to be tested;

[0055] S4: If the corresponding line sequence indicator 4 responds, that is, the line sequence light is on, it indicates that the connector wire is connected and corresponds to the connection pin on the corresponding connector 12; at the same time, the resistance meter 5 shows the insulation resistance value between the wire end probe 2 and the metal shell of the connector to be tested. If the resistance value is lower than the set resistance value, the corresponding alarm 11, that is, the red alarm light will light up and be accompanied by a roar.

[0056] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A device for checking the wiring sequence and insulation impedance of a connector, wherein the connector to be tested (1) comprises a plurality of connecting wires, an interface, and a conductive shell; one end of the plurality of connecting wires is used as a detection end, and the other end is respectively connected to the interface; characterized in that: The device comprises a line sequence inspection component, an insulation impedance detection component, a wire end test lead (2) and a shell test lead (3); The line sequence inspection component comprises a plurality of line sequence inspection circuits electrically connected to corresponding connecting wires through interfaces, and the line sequence inspection circuits are provided with corresponding line sequence indicators (4); The insulation impedance detection component comprises an insulation impedance detection circuit electrically connected to the housing test lead (3), and a resistance meter (5) is provided on the insulation impedance detection circuit; One end of the conductor end test lead (2) is used for electrical contact with the detection end, and the other end is electrically connected to a plurality of line sequence inspection circuits and insulation impedance detection circuits respectively.

2. The device for connector line sequence inspection and insulation impedance detection according to claim 1, characterized in that: The line sequence inspection component comprises a connector (12) connected to the interface, a plurality of line sequence inspection wires (6) connected to the connector (12), and a line sequence inspection power supply (7); A plurality of line sequence indicators (4) are respectively connected in series between corresponding line sequence inspection wires (6) and a line sequence inspection power supply (7).

3. The device for connector line sequence inspection and insulation impedance detection according to claim 1 or 2, characterized in that: The line sequence indicator (4) is an indicator light.

4. The device for connector line sequence inspection and insulation impedance detection according to claim 1 or 2, characterized in that: The line sequence inspection component comprises 35 to 40 line sequence indicators (4).

5. The device for connector line sequence inspection and insulation impedance detection according to claim 2, characterized in that: The insulation impedance detection circuit is also provided with an insulation impedance detection power supply (8).

6. The device for connector line sequence inspection and insulation impedance detection according to claim 1, characterized in that: The line sequence checking power supply (7) and the insulation impedance detecting power supply (8) are power supplies that do not share a common ground.

7. The device for connector line sequence inspection and insulation impedance detection according to claim 1, characterized in that: The resistance meter (5) is electrically connected to the alarm (11).

8. The device for connector line sequence inspection and insulation impedance detection according to claim 1, characterized in that: The device also includes a power switch (9) and a power status indicator light (10).

9. The device for connector line sequence inspection and insulation impedance detection according to claim 1, characterized in that: The device also includes a housing.

10. A line sequence inspection and insulation impedance detection method based on the device according to any one of claims 1 to 9, characterized in that: The method includes: Connecting the plurality of line sequence inspection circuits to the plurality of connecting wires respectively, and making the shell test lead (3) electrically contact the conductive shell of the connector (1) to be tested; The test leads (2) at the ends of the wires are electrically contacted with the detection ends of the connecting wires in sequence; The connected line sequence inspection circuit is determined according to the line sequence indicator (4) that responds, and the line sequence inspection is completed; at the same time, the reading of the resistance meter (5) is compared with the set value to complete the insulation impedance detection.

Images