Connector female seat terminal testing device

Abstract

The utility model provides a connector female seat terminal testing device. The connector female seat terminal testing device comprises a first connecting conductor, a second connecting conductor and a plug structure, one end of the first connecting conductor and one end of the second connecting conductor are connected with the plug structure, and the other end of the first connecting conductor and the other end of the second connecting conductor are used for connecting a test wire; the first connecting conductor and the second connecting conductor are arranged at intervals; the plug structure is used for being inserted into a connecting end hole of a connector female seat; when the plug structure is inserted into the connecting end hole, the plug structure is in contact with the edge side wall of the connecting end hole to form a first test contact point and a second test contact point. When the testing device serves as a connecting structure to be connected with a testing wire, on one hand, the testing device can be fixedly connected with a connecting end hole, on the other hand, only the resistance of a very small part of the testing device is tested, and the measuring result of almost true four-wire testing can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic component detection, in particular to a connector female socket terminal testing device. Background Art

[0002] like Figure 1 As shown in the figure, the principle of four-wire test is to set two test terminals on the object to be tested, and each test terminal is connected to two connecting wires, two connecting wires are connected to the voltmeter V, and the other two connecting wires are connected to the ammeter A. Each connecting wire itself also has resistance. For example, the resistance R1~R12 is equivalent to the resistance of the connecting wire, and the resistance of the object to be tested is R0. Because the voltmeter V almost does not pass current, Figure 1 The resistors with current passing through are R1~R3, R10~R12 and R0 in the circuit. The current value measured by ammeter A is the current value passing through resistor R0. Because no current passes through resistors R4~R9, the voltage value measured by voltmeter V is the voltage value across resistor R0. Through U / I, the resistance value of resistor R0 can be accurately calculated. This test method does not take the resistance value of the connecting wire into calculation and can obtain accurate measurement results.

[0003] When testing the female connector terminal using the four-wire test method, due to its structural characteristics, the connecting wire cannot be directly connected to the test endpoint. Usually, a connection structure is first connected to the female connector terminal, and a certain position point of the connection structure is used as the test endpoint. However, this test method will calculate the resistance of the connection structure, resulting in a large error in the test result, which is called a false four-wire test method. There are two traditional four-wire test methods for female connector terminals: (1) Probe type: such as Figure 2 As shown, a single probe is inserted into the hole, and then the tail of the probe is transferred to a four-wire signal for testing. When testing the line resistance in this way, current passes through the probe, and the voltmeter is connected to both ends of the probe and the test product. Therefore, the resistance of the probe is included in the line resistance of the test product, and the contact between the probe and the product will produce contact resistance. The contact resistance is affected by the wear of the test environment and materials, resulting in floating test resistance and the inability to accurately detect the resistance value of the line; (2) Male socket real plug-in transfer: such as Figure 3 As shown, the male terminal adapter method is used to test the product. When this method tests the circuit resistance, current passes through the male terminal, and the voltmeter is connected to both ends of the male terminal and the test product. Therefore, the resistance of the male adapter will also be included in the line resistance of the test product, and contact resistance will also be generated. The test resistance value floats, and the resistance value of the circuit cannot be accurately detected. In addition, the service life is short and the production cycle is long.

[0004] Based on the above situation, the utility model provides a solution that can take into account the defects of all the above solutions, and can realize line resistance testing that is close to the true four-wire test method, which greatly reduces the inclusion of resistance other than the resistance of the detected product, reduces the error of the measurement result, and at the same time can reduce the impact of contact resistance on the measurement result. It has low production cost, short production cycle, long service life and high test accuracy. Utility Model Content

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a connector female terminal testing device.

[0006] A connector female terminal testing device provided by the utility model includes: a first connecting conductor, a second connecting conductor and a plug structure;

[0007] One end of the first connecting conductor and one end of the second connecting conductor are connected to the plug structure, and the other end of the first connecting conductor and the other end of the second connecting conductor are used to connect the test lead; the first connecting conductor and the second connecting conductor are spaced apart;

[0008] The plug structure is used to be inserted into the connection end hole of the connector female socket; when the plug structure is inserted into the connection end hole, the plug structure contacts the edge side wall of the connection end hole to form a first test contact point and a second test contact point.

[0009] Preferably, the plug structure comprises a first side portion and a second side portion;

[0010] One end of the first side portion is connected to one end of the second side portion, the other end of the first side portion is connected to the first connecting conductor, and the other end of the second side portion is connected to the second connecting conductor;

[0011] The first side portion and the second side portion are both provided with an introduction slope, and the plug structure is inserted into the connection end hole through the introduction slope.

[0012] Preferably, the first side edge portion and the second side edge portion form an open structure that can be compressed;

[0013] When the plug structure is inserted into the connection end hole, the first side edge portion and the second side edge portion can be compressed by external force;

[0014] After the insertion is completed, the first side portion and the second side portion can be tightly fixed on the connecting end hole through elastic restoring force.

[0015] Preferably, the first side edge portion contacts the edge side wall of the connecting terminal hole to form the first test contact point;

[0016] The second side edge portion contacts the edge side wall of the connection terminal hole to form the second test contact point.

[0017] Preferably, the plug structure is V-shaped as a whole.

[0018] Preferably, surfaces of the first connecting conductor and the second connecting conductor are both provided with an insulating layer.

[0019] Preferably, it further includes a fixing structure, and the first connecting conductor and the second connecting conductor are connected and fixed by the fixing structure.

[0020] Preferably, a guiding structure is provided on the fixing structure, and the guiding structure is used to fix the contact angle between the testing device and the connecting end hole.

[0021] Preferably, the fixing structure is a cylindrical plastic structure, and the guiding head is a rectangular plastic structure.

[0022] Preferably, the first connecting conductor and the second connecting conductor are both welding wires.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] 1. When the test device of the utility model acts as a connection structure to connect the test wire, on the one hand, it can realize the connection and fixation between the test device and the connection terminal hole, and on the other hand, only a very small part of the resistance of the test device is tested, which can achieve a measurement result close to a true four-wire test.

[0025] 2. The test device of the utility model can realize the line resistance test which is almost the true four-wire test method. The test line resistance is calculated from the detection position. Only a very small part of the resistance of the test device is included in the detection line resistance, which greatly reduces the inclusion of resistance other than the resistance of the detection product and reduces the error of the measurement result.

[0026] 3. The plug structure of the test device of the utility model adopts a structure that can produce elastic deformation. The first side edge portion and the second side edge portion are tightly abutted against the side wall of the connecting end hole through elastic restoring force, which greatly reduces the existence of contact resistance and reduces the influence of contact resistance on the measurement result. It has low production cost, short production cycle, long service life and high test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0028] Figure 1 It is a schematic diagram of the principle of four-wire test;

[0029] Figure 2 The schematic diagram is a principle diagram of testing using a probe;

[0030] Figure 3 This is a schematic diagram of the principle of testing using a male socket real plug adapter;

[0031] Figure 4 Schematic diagram of the connector female terminal test device Figure 1 ;

[0032] Figure 5 Schematic diagram of the connector female terminal test device Figure 2 ;

[0033] Figure 6 It is a schematic diagram of the dimensions of the connector female terminal test device;

[0034] Figure 7 It is a schematic diagram of the connection between the connector female terminal test device and the connector female terminal;

[0035] Figure 8 A schematic diagram for highlighting the connection relationship between the plug structure and the female terminal of the connector;

[0036] Fig. 9 It is a structural schematic diagram of the connector in an unplugged state;

[0037] Fig.10 It is a structural schematic diagram of the connector in the inserted state;

[0038] Fig.11 It is a structural diagram of inserting the connector female socket;

[0039] Fig.12 for Fig.11 A partial enlarged view of .

[0040] The figure shows:

[0041] First connecting conductor 1 Second test contact point 8

[0042] Second connecting conductor 2 Leading-in bevel 9

[0043] Plug structure 3 Insulation layer 10

[0044] First side portion 301 fixing structure 11

[0045] Second side portion 302 guide structure 12

[0046] First test wire 4 Circuit to be tested 13

[0047] Second test lead 5 Test point 14

[0048] Connector female socket 6 Socket socket 15

[0049] Connecting port 601 Connector socket 16

[0050] First test contact point 7 DETAILED DESCRIPTION

[0051] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0052] Example:

[0053] like Figures 4 to 12 As shown, this embodiment provides a connector female terminal testing device, including: a first connecting conductor 1, a second connecting conductor 2 and a plug structure 3; one end of the first connecting conductor 1 and one end of the second connecting conductor 2 are connected to the plug structure 3, and the other end of the first connecting conductor 1 and the other end of the second connecting conductor 2 are used to connect the test wire; the first connecting conductor 1 and the second connecting conductor 2 are arranged at intervals; the plug structure 3 is used to be inserted into the connecting terminal hole 601 of the connector female 6; when the plug structure 3 is inserted into the connecting terminal hole 601, the plug structure 3 contacts the edge side wall of the connecting terminal hole 601 to form a first test contact point 7 and a second test contact point 8.

[0054] The first connection conductor 1 and the second connection conductor 2 are both welding wires. The surfaces of the first connection conductor 1 and the second connection conductor 2 are both provided with an insulating layer 10. The test device further includes a fixing structure 11, through which the first connection conductor 1 and the second connection conductor 2 are connected and fixed. A guiding structure 12 is provided on the fixing structure 11, and the guiding structure 12 is used to fix the contact angle between the test device and the connection terminal hole 601. The fixing structure 11 is a cylindrical plastic structure, and the guiding head is a rectangular plastic structure.

[0055] The plug structure 3 includes a first side portion 301 and a second side portion 302; one end of the first side portion 301 is connected to one end of the second side portion 302, the other end of the first side portion 301 is connected to the first connecting conductor 1, and the other end of the second side portion 302 is connected to the second connecting conductor 2; both the first side portion 301 and the second side portion 302 are provided with an introduction slope 9, and the plug structure 3 is inserted into the connecting terminal hole 601 through the introduction slope 9. The first side portion 301 contacts the edge side wall of the connecting terminal hole 601 to form a first test contact point 7; the second side portion 302 contacts the edge side wall of the connecting terminal hole 601 to form a second test contact point 8. The plug structure 3 is V-shaped as a whole.

[0056] The first connecting conductor 1 and the second connecting conductor 2 form an opening structure that can be compressed; when the plug structure 3 is inserted into the connecting terminal hole 601, the first side portion 301 and the second side portion 302 can be compressed by external force; after the insertion is completed, the first side portion 301 and the second side portion 302 can be tightly fixed on the connecting terminal hole 601 by elastic restoring force.

[0057] In this embodiment, the first connecting conductor 1, the second connecting conductor 2, the first side portion 301 and the second side portion 302 are integrally formed, and the plug structure 3 formed by the first side portion 301 and the second side portion 302 is approximately V-shaped, and the first side portion 301 and the second side portion 302 are provided with an arc.

[0058] like Figure 7 As shown, the detection product is a structure consisting of a circuit to be detected 13 and a connector socket 6. The first connecting conductor 1 and the second connecting conductor 2 have two connection terminals A and B, which are respectively connected to the first test wire 4 and the second test wire 5. There is a test point 14 at one end of the circuit to be detected 13. The test point 14 has two connection terminals C and D for connecting two test wires. The test wires are connected to a voltmeter and an ammeter.

[0059] The plug structure 3 is inserted into the connection end hole 601 of the connector socket 6, and contacts the hole wall to form the closest independent contact mode, contacting at the first test contact point 7 and the second test contact point 8 respectively. The structure located in the connection end hole 601 does not contact the hole wall.

[0060] Four connection terminals and four test wires are used to perform four-terminal tests on the detection product through voltage and current respectively. The contact resistance generated during the test is 5 to 10 milliohms.

[0061] like Figure 7 As shown, taking the first connecting conductor 1 connected to the ammeter and the second connecting conductor 2 connected to the voltmeter as an example, a test wire is led out from the C connection end and connected to the two ends of the ammeter together with the first test wire 4, and a test wire is led out from the D connection end and connected to the two ends of the voltmeter together with the second test wire 5.

[0062] like Figure 7As shown, the line loop where the first connecting conductor 1 is located is an excitation circuit, and the excitation power supply is in the line loop. Current passes through the entire line loop, so it can be known that current also passes through the partial plug structure 3 located in the connecting terminal hole 601. Since the voltmeter hardly passes current, it can be known that no current passes through the second connecting conductor 2 from the position of the second test wire 5 to the left, and the voltmeter is connected to the two ends of the line 13 to be tested, the connector socket 6, and the partial plug structure 3 located in the connecting terminal hole 601. Therefore, the voltage value measured by the voltmeter includes the voltage value generated by the partial plug structure 3 located in the connecting terminal hole 601, so the calculated resistance value includes the resistance value of this part, but the resistance value of this partial structure is very small and has little effect on the measurement result. Therefore, it is a measurement device that can realize nearly true four-wire testing.

[0063] like Figures 9-11 As shown, multiple connector female terminal test devices are installed in the plug seat 15, multiple connector female sockets 6 are installed in the connector socket 16, and the plug seat 15 and the connector socket 16 are plugged together so that the plug structure 3 is partially inserted into the connector female socket 6. The plug seat 15 and the connector socket 16 are both non-conductive structures.

[0064] When the test device of the utility model acts as a connection structure to connect the test wire, on the one hand, it can realize the connection and fixation between the test device and the connection terminal hole, and on the other hand, only a very small part of the resistance of the test device is tested, which can achieve a measurement result close to a true four-wire test.

[0065] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0066] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A connector female terminal testing device, characterized in that: include: A first connecting conductor (1), a second connecting conductor (2) and a plug structure (3); One end of the first connecting conductor (1) and one end of the second connecting conductor (2) are connected to the plug structure (3), and the other end of the first connecting conductor (1) and the other end of the second connecting conductor (2) are used to connect a test lead; the first connecting conductor (1) and the second connecting conductor (2) are spaced apart; The plug structure (3) is used to be inserted into the connection end hole (601) of the connector socket (6); when the plug structure (3) is inserted into the connection end hole (601), the plug structure (3) contacts the edge side wall of the connection end hole (601) to form a first test contact point (7) and a second test contact point (8).

2. The connector female terminal testing device according to claim 1, characterized in that: The plug structure (3) comprises a first side portion (301) and a second side portion (302); One end of the first side portion (301) is connected to one end of the second side portion (302), the other end of the first side portion (301) is connected to the first connecting conductor (1), and the other end of the second side portion (302) is connected to the second connecting conductor (2); The first side portion (301) and the second side portion (302) are both provided with an introduction slope (9), and the plug structure (3) is inserted into the connection end hole (601) through the introduction slope (9).

3. The connector female terminal testing device according to claim 2, characterized in that: The first side edge portion (301) and the second side edge portion (302) form an open structure that can be compressed; When the plug structure (3) is inserted into the connection end hole (601), the first side edge portion (301) and the second side edge portion (302) can be compressed by external force; After the insertion is completed, the first side portion (301) and the second side portion (302) can be tightly fixed on the connecting end hole (601) through elastic restoring force.

4. The connector female terminal testing device according to claim 2, characterized in that: The first side edge portion (301) contacts the edge side wall of the connection terminal hole (601) to form the first test contact point (7); The second side edge portion (302) contacts the edge side wall of the connection terminal hole (601) to form the second test contact point (8).

5. The connector female terminal testing device according to claim 2, characterized in that: The plug structure (3) is V-shaped as a whole.

6. The connector female terminal testing device according to claim 1, characterized in that: The surfaces of the first connecting conductor (1) and the second connecting conductor (2) are both provided with an insulating layer (10).

7. The connector female terminal testing device according to claim 1, characterized in that: It also comprises a fixing structure (11), and the first connecting conductor (1) and the second connecting conductor (2) are connected and fixed via the fixing structure (11).

8. The connector female terminal testing device according to claim 7, characterized in that: The fixing structure (11) is provided with a guiding structure (12), and the guiding structure (12) is used to fix the contact angle between the testing device and the connecting end hole (601).

9. The connector female terminal testing device according to claim 8, characterized in that: The fixing structure (11) is a cylindrical plastic structure, and the guiding structure (12) is a rectangular plastic structure.

10. The connector female terminal testing device according to claim 1, characterized in that: The first connecting conductor (1) and the second connecting conductor (2) are both welding wires.

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