Test device for detection of quick-connection electrical connector

Abstract

The utility model relates to the technical field of railway vehicle fault detection, and provides a test device for detecting a quick-connection electrical connector, which comprises a control box, a connector plug and a connector base, a plurality of wires are arranged in the control box; the connector base is provided with male pins with the same number as the leads; the connector plug is provided with female pins with the same number as the male pins. One end of each lead is electrically connected with one male pin of the connector base in a one-to-one correspondence manner, and the other end of each lead is electrically connected with one female pin of the connector plug in a one-to-one correspondence manner; the surface of the control box is provided with measuring holes which are the same as the wires in number, and each measuring hole is arranged on one side of each wire in a one-to-one correspondence mode. The device can be connected with a switchboard QE connector base and a switchboard QE connector plug on a railway vehicle, and can measure the functional characteristics of each line in the switchboard under the condition of not damaging the normal connection of the QE connector and the circuit, thereby realizing the rapid positioning of abnormal problems.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle fault detection, in particular to a test device for detecting a quick-connect electrical connector. Background Art

[0002] During the debugging and maintenance of rail vehicles, it is necessary to identify and handle abnormal problems of the vehicles. To confirm some abnormal problems, it is necessary to measure the functional characteristics (such as voltage, resistance, etc.) of the hard wire at the Quick-Connect Electrical Connector (QE connector) to identify the fault point.

[0003] The current method of locating abnormal problems is mainly to measure the voltage of the hard wires of peripheral lines such as circuit breakers and external relay bases. Measuring the conduction status of hard wires can only rule out abnormalities such as wrong wiring and cross-wiring, but cannot confirm abnormalities inside the distribution board. Because a single QE connector in the distribution board has a total of 50 pins, removing the QE connector will cause the circuit to be blocked. If other lines of the circuit where the fault point is located are located in this QE connector, some functional characteristics of the internal lines of the QE connector cannot be measured, that is, the fault point of the distribution board cannot be locked after the QE connector is removed. Therefore, there is an urgent need for a device that can measure the functional characteristics of each line in the distribution board of a rail vehicle without destroying the QE connector and the normal connectivity of the circuit. Utility Model Content

[0004] The utility model provides a test device for detecting a quick-connect electrical connector, which is used to solve the defect that the abnormal problem positioning method in the prior art cannot confirm the abnormality inside the switchboard, and realizes measuring the functional characteristics of each circuit in the switchboard of a rail vehicle without destroying the QE connector and the normal connection of the circuit.

[0005] The utility model provides a test device for detecting a quick-connect electrical connector, comprising: a control box, a connector plug and a connector base;

[0006] A plurality of wires are arranged in the control box; the connector base is provided with male pins having the same number as the wires; the connector plug is provided with female pins having the same number as the male pins; one end of each wire is electrically connected to a male pin of the connector base in a one-to-one correspondence, and the other end of each wire is electrically connected to a female pin of the connector plug in a one-to-one correspondence; the control box surface is provided with measuring holes having the same number as the wires, and each of the measuring holes is arranged in a one-to-one correspondence on one side of each of the wires.

[0007] According to a test device for detecting a quick-connect electrical connector provided by the utility model, the male pin on the connector base is a retractable male pin.

[0008] According to a test device for testing a quick-connect electrical connector provided by the utility model, the retractable male needle comprises a needle sleeve, a needle tube, a needle head and a spring;

[0009] The needle sleeve is a hollow cylinder with two ends open, one end of which is fixed to the wire; the needle tube is a hollow cylinder with one end open, fixed inside the needle sleeve, and the closed end of the needle tube faces the wire; the spring and the needle are installed in the needle tube, one end of the spring is close to the closed end of the needle tube, and the other end is close to the tail end of the needle.

[0010] According to a test device for detecting a quick-connect electrical connector provided by the utility model, the radius of the tail end of the needle is larger than the radius of the opening of the needle tube.

[0011] According to a test device for detecting a quick-connect electrical connector provided by the utility model, the female pin of the connector plug matches the shape of the male pin of the base of an external distribution board, and the needle head of the male pin of the connector base matches the shape of the female pin of the plug of the external distribution board.

[0012] According to a test device for detecting quick-connect electrical connectors provided by the utility model, each of the wires in the control box is connected to a switch; the control box surface is provided with control units having the same number as the switches for controlling the switches one-to-one.

[0013] According to a test device for detecting a quick-connect electrical connector provided by the utility model, each of the wires in the control box is connected to a fuse.

[0014] According to the test device for detecting a quick-connect electrical connector provided by the utility model, all the measuring holes are arranged on the same side surface of the control box.

[0015] According to a test device for detecting quick-connect electrical connectors provided by the utility model, a digital marking area is provided on one side of each measuring hole on the surface of the control box, and the digital marking area is used to indicate the corresponding relationship between the numbers of the wires and the male pins and the female pins.

[0016] According to the test device for detecting a quick-connect electrical connector provided by the utility model, all parts of the wires located outside the control box are gathered into a wire harness.

[0017] The utility model provides a test device for quick-connect electrical connector detection, including: a control box, a connector plug and a connector base; a plurality of wires are arranged in the control box; the connector base is provided with male pins with the same number as the wires; the connector plug is provided with female pins with the same number as the male pins; one end of each wire is electrically connected to a male pin of the connector base in a one-to-one correspondence, and the other end of each wire is electrically connected to a female pin of the connector plug in a one-to-one correspondence; the surface of the control box is provided with measuring holes with the same number as the wires, and each measuring hole is arranged in a one-to-one correspondence on one side of each wire. The device can be connected to the switchboard QE connector base and the switchboard QE connector plug on the rail vehicle, and can measure the functional characteristics of each circuit in the switchboard without destroying the QE connector and the normal connectivity of the circuit, so as to realize the rapid positioning of abnormal problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a test device for testing quick-connect electrical connectors provided by the utility model;

[0020] Figure 2 This is one of the circuit structure diagrams of the quick-connect electrical connector provided by the utility model;

[0021] Figure 3 This is the second circuit structure diagram of the quick-connect electrical connector provided by the utility model;

[0022] Figure 4 It is a structural schematic diagram of the connector base in the embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the male needle in the embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the exploded structure of the male needle in the embodiment of the utility model;

[0025] Figure 7 It is a schematic diagram of a vehicle side light circuit used as an example in an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1: control box; 2: connector plug; 3: connector base; 4: measuring hole; 5: switch; 6: control unit; 7: fuse; 8: wire; 31: male needle; 311: needle sleeve; 312: needle tube; 313: needle head; 314: spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 As shown, the test device for detecting the quick-connect electrical connector provided by the utility model comprises: a control box 1, a connector plug 2 and a connector base 3.

[0030] Preferably, the utility model can use a rectangular hollow plastic box as the control box 1. A plurality of wires 8 are arranged in the control box 1, and both ends of the wires 8 extend out of the control box 1. Preferably, the number of wires 8 in the utility model is 50.

[0031] The connector base 3 is provided with male pins 31 having the same number as the wires 8 , and the connector base 3 is used to connect to the plug of the QE connector of the distribution board.

[0032] The connector plug 2 is provided with female pins having the same number as the male pins 31 , and the connector plug 2 is used to connect to the base of the QE connector of the distribution board.

[0033] like Figure 2 and Figure 3 As shown, one end of each wire 8 is electrically connected to a male pin 31 of the connector base 3 in a one-to-one correspondence, and the other end of each wire 8 is electrically connected to a female pin of the connector plug 2 in a one-to-one correspondence. It should be understood that Figure 3 The two wires 8 depicted in FIG. 8 are merely examples and do not mean that there are only two wires 8 .

[0034] like Figure 1As shown, the control box 1 is provided with measuring holes 4 on the surface, which are the same in number as the wires 8, and each measuring hole 4 is provided on one side of each wire 8 in a one-to-one correspondence. After the connector base 3 of the test device is connected to the plug of the QE connector of the distribution board, and the connector plug 2 of the test device is connected to the base of the QE connector of the distribution board, the hard-wire loop of the distribution board is connected to the load after passing through the experimental device. At this time, a measuring tool such as a multimeter can be used to directly contact the corresponding wire 8 from the measuring hole 4 to measure the voltage, resistance and other parameters on the wire 8. A pressurized wire can also be used to pressurize the corresponding wire 8 from the measuring hole 4.

[0035] In an optional embodiment, if Figure 4 As shown, the male pin 31 on the connector base 3 is a retractable male pin. Since the QE connectors at the main distribution board, control distribution board and terminal distribution board on the rail vehicle are all provided with anti-error pins, different anti-error pins have different pin blocking designs (for example, 2 of the 50 pins are replaced with plastic blocks), and the anti-error pins are mainly used to avoid different connector connection errors. In the traditional connection process, it is necessary to withdraw the corresponding male pin on the connector plug for the corresponding anti-error pin before it can be connected to the base of the QE connector. The work of withdrawing and pressing the pins for different QE connectors is cumbersome, and the connection efficiency is low. In order to overcome this defect, the utility model adopts a retractable male pin to solve the problem of the inability to connect universally due to the anti-error pin.

[0036] Specifically, Figure 5 and Figure 6 As shown, the retractable male needle in the present invention comprises a needle sleeve 311, a needle tube 312, a needle head 313 and a spring 314. The needle sleeve 311 is a hollow cylinder with two ends open, one end ( Figure 5 and Figure 6 The needle tube 312 is a hollow cylinder with one end open and fixed inside the needle sleeve 311. The closed end ( Figure 5 and Figure 6 The left end of the needle 313 in the middle of the connector is toward the wire 8. The spring 314 and the needle 313 are installed in the needle tube 312, one end of the spring 314 is close to the closed end of the needle tube 312, and the other end is close to the tail end of the needle 313. Except for the tail end, the rest of the needle 313 extends from the opening of the needle tube 312. During the connection between the connector base 3 and the plug of the QE connector, the needle 313 corresponding to the anti-mistaken needle part is pushed and the spring 314 is compressed and retreated to the inside of the needle tube 312, and the other needles 313 are normally connected with the female pins of the QE connector plug, thereby solving the problem that the QE connector cannot be universally connected due to the anti-mistaken needle design.

[0037] In an optional embodiment, if Figure 6As shown, the radius of the tail end of the needle 313 is greater than the radius of the opening of the needle tube 312 , thereby preventing the needle 313 from falling off from the opening of the needle tube 312 .

[0038] In an optional embodiment, the female pin of the connector plug 2 matches the shape of the male pin of the base of the external distribution board, and the needle head 313 of the male pin 31 of the connector base 3 matches the shape of the female pin of the plug of the external distribution board, so as to achieve good contact with the QE connector and avoid poor contact.

[0039] In an optional embodiment, if Figure 2 and Figure 3 As shown, each wire 8 in the control box 1 is connected to a switch 5, which is used to ensure the conduction between the male pin and the female pin and to cut off the circuit. Figure 1 As shown, the control box 1 is provided with the same number of control units 6 as the switches 5 on the surface, which are used to control the switches 5 one by one. The utility model does not limit the specific type of the control unit 6, and components including but not limited to buttons, levers, etc. can be used as the control unit 6. The switch 5 can be controlled to be turned on and off by the control unit 6. After the wire 8 is pressurized, the switch 5 is controlled to be disconnected and the pressurization of the wire 8 can be eliminated.

[0040] In an optional embodiment, each wire 8 in the control box 1 is connected to a fuse 7, and the fuse 7 can prevent the internal circuit from burning out due to short circuit, overcurrent or grounding during the measurement process.

[0041] In an optional embodiment, all measuring holes 4 are arranged on the same side surface of the control box 1, for example Figure 1 All of them are arranged on the front side of the control box 1, so that multiple measuring holes 4 can be used for measurement at the same time.

[0042] In an optional embodiment, a digital marking area is provided on one side of each measuring hole 4 on the surface of the control box 1, and the digital marking area is used to indicate the correspondence between the wire 8 and the numbering of the male needle 31 and the female needle. For example, 50 digital marking areas with 1-50 can be set, corresponding to 50 male needles 31 and 50 female needles respectively.

[0043] In an optional embodiment, if Figure 1 As shown, all the wires 8 outside the control box 1 are gathered into a wire bundle to avoid excessive entanglement and curling of the wires 8, making it convenient to use.

[0044] When using the above test device, first confirm that all switches 5 are in the closed position, and the fuse 7 is not burned or missing. Connect the connector base 3 of the test device to the plug of the QE connector of the distribution board, and connect the connector plug 2 of the test device to the base of the QE connector of the distribution board, so that all the circuits of the entire QE connector are connected in series with the tester, and there are no other load components that affect the hard-wired circuit. Insert the multimeter probe into the measuring hole 4, so that the probe contacts the potential measurement point on the wire 8, and then measure the voltage, conduction state, resistance state and other information of the wire 8, and then determine the fault point based on the measurement data. It is also possible to pressurize the wire 8 to simulate the line logic. To illustrate with an example, suppose the current fault is that the outside lights of the vehicle do not light up after opening the door. The circuit involves 120 lines, 120B lines, and 145C lines, all in the CN3 connector. After removing CN3, the entire circuit has no electricity and cannot be measured, and the outside lights are located outside the vehicle and are difficult to measure directly. For example Figure 7 As shown, the test device provided by the utility model is used to connect the distribution board CN3. It is found that pins 14 and 44 are energized, and pin 11 is de-energized. After pin 11 is pressurized, the vehicle side light comes on, which is quickly identified as an abnormality inside the distribution board, avoiding the removal of the vehicle side light.

[0045] In summary, the test device for detecting quick-connect electrical connectors provided by the utility model can be connected to the QE connector base and the QE connector plug of the distribution board on the rail vehicle. It can measure the functional characteristics of each circuit in the distribution board without damaging the QE connector and the normal connectivity of the circuit. It can also pressurize the wires to simulate the line logic, so as to quickly locate abnormal problems, filling the gap that the internal logic circuits of the main distribution, control and terminal distribution boards of rail vehicles cannot be detected.

[0046] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0047] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A test device for testing quick-connect electrical connectors, characterized in that: include: control box, connector plug and connector base; The control box is provided with a plurality of wires; the connector base is provided with male pins having the same number as the wires; The connector plug is provided with female pins having the same number as the male pins; one end of each wire is electrically connected to a male pin of the connector base in a one-to-one correspondence, and the other end of each wire is electrically connected to a female pin of the connector plug in a one-to-one correspondence; the surface of the control box is provided with measuring holes having the same number as the wires, and each of the measuring holes is arranged in a one-to-one correspondence on one side of each of the wires.

2. The test device for detecting quick-connect electrical connectors according to claim 1, characterized in that: The male pin on the connector base is a retractable male pin.

3. The test device for detecting quick-connect electrical connectors according to claim 2, characterized in that: The retractable male needle comprises a needle sleeve, a needle tube, a needle head and a spring; The needle sleeve is a hollow cylinder with two ends open, one end of which is fixed to the wire; the needle tube is a hollow cylinder with one end open, fixed inside the needle sleeve, and the closed end of the needle tube faces the wire; the spring and the needle are installed in the needle tube, one end of the spring is close to the closed end of the needle tube, and the other end is close to the tail end of the needle.

4. The test device for detecting quick-connect electrical connectors according to claim 3, characterized in that: The radius of the tail end of the needle is greater than the radius of the opening of the needle tube.

5. The test device for detecting quick-connect electrical connectors according to claim 4, characterized in that: The female pin of the connector plug matches the shape of the male pin of the base of the external distribution board, and the needle head of the male pin of the connector base matches the shape of the female pin of the plug of the external distribution board.

6. The test device for detecting quick-connect electrical connectors according to claim 1, characterized in that: Each of the wires in the control box is connected to a switch; and the control box surface is provided with control units having the same number as the switches for controlling the switches in a one-to-one correspondence.

7. The test device for detecting quick-connect electrical connectors according to claim 6, characterized in that: Each of the wires in the control box is connected with a fuse.

8. The test device for detecting quick-connect electrical connectors according to claim 1, characterized in that: All the measuring holes are arranged on the same side surface of the control box.

9. The test device for detecting a quick-connect electrical connector according to any one of claims 1 to 8, characterized in that: A digital marking area is provided on one side of each measuring hole on the surface of the control box, and the digital marking area is used to indicate the corresponding relationship between the numbers of the wires and the male pins and the female pins.

10. The test device for detecting quick-connect electrical connectors according to claim 9, characterized in that: All parts of the wires located outside the control box are gathered into a wire harness.

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