A terminal insertion and extraction force testing mechanism

Abstract

This utility model discloses a terminal insertion and extraction force testing mechanism, including a base plate and a threaded rod mounted on the upper part of the base plate. An electronic tensile gauge is provided on the front side of the threaded rod, and a pin is provided on the lower outer wall of the electronic tensile gauge. A terminal fixing fixture is fixedly connected to the upper outer wall of the base plate. A terminal placement groove is opened inside the front outer wall of the terminal fixing fixture for pre-fixing the position of the terminal. A terminal clamping block is provided on the front side of the terminal fixing fixture to restrict the position of the terminal. By separating the terminal placement groove and the terminal fixing fixture, and fixing the terminal placement groove to the fixing plate, the fixing plate can be replaced when it is necessary to fix terminals of different sizes. The spacing between the terminal placement grooves in front of different fixing plates is different, thereby adapting to the placement of terminals of different sizes. By simply replacing the fixing plate, the testing mechanism can accurately adapt to various terminals and meet diverse testing needs.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing fixtures, specifically relating to a terminal insertion and extraction force testing mechanism. Background Technology

[0002] Terminal insertion and extraction force refers to the force required during insertion and extraction. It is a crucial indicator of the stability of terminal connector connections. Terminal connectors play a vital role in signal and power transmission and are very common in industrial production. In modern industry, terminal connection interfaces are particularly important, and terminal insertion and extraction force is a critical guarantee of the stability of these interfaces. In practical applications, insufficient insertion and extraction force can lead to unstable signals or power, easily resulting in disconnections or poor contact, causing significant problems for production and use. Conversely, excessive insertion and extraction force can make terminal insertion and extraction difficult, and may even lead to broken terminals or loose wiring.

[0003] However, when clamping and fixing terminals of different sizes, the inner diameter of the terminal fixing groove cannot be adjusted and replaced, which means that terminals of different sizes cannot be used with a single insertion and extraction force testing mechanism, increasing the cost of purchasing different adapter equipment. Utility Model Content

[0004] The purpose of this invention is to provide a terminal insertion and extraction force testing mechanism to solve the problem mentioned in the background art that the inner diameter of the terminal fixing groove cannot be adjusted or replaced when clamping and fixing terminals of different sizes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a terminal insertion and extraction force testing mechanism, comprising a base plate and a threaded rod mounted on the upper end of the base plate;

[0006] An electronic tension gauge is installed on the front side of the threaded rod;

[0007] The lower outer wall of the electronic tensile tester is provided with a pin;

[0008] A terminal fixing fixture is fixedly connected to the upper outer wall of the base plate. A terminal insertion groove is opened inside the front outer wall of the terminal fixing fixture for pre-fixing the position of the terminal. A terminal pressing block is provided on the front side of the terminal fixing fixture to limit the position of the terminal.

[0009] A fixing plate is provided on the rear side of the terminal insertion slot to restrict the position of the terminal insertion slot. A first groove is provided inside the front outer wall of the terminal fixing fixture to separate the fixing plate and the terminal fixing fixture.

[0010] Preferably, two second grooves are formed on the rear side of the fixing plate and inside the front outer wall of the terminal fixing fixture, and threaded sleeves are fixedly connected to the lower inner walls of the two second grooves.

[0011] Preferably, the outer rear wall of the fixing plate is fixedly connected to two limiting plates, and the upper outer wall of the two limiting plates is provided with fastening screws that engage with the threaded sleeve to limit the position of the fixing plate.

[0012] Preferably, a fixing frame is fixedly connected to the upper outer wall of the base plate to restrict the fixed position of the threaded rod, and a guide shaft is fixedly connected between the upper and lower inner walls of the fixing frame and in front of the threaded rod to guide the direction of the electronic tension gauge.

[0013] Preferably, a limiting block is fixedly connected to the outer rear wall of the electronic tensile gauge to fit between the threaded rod and the guide shaft.

[0014] Preferably, the front outer wall of the terminal clamping block is provided with fastening bolts that engage with the terminal fixing fixture, both near the left and right sides, to limit the position of the terminal clamping block and control whether the terminal is clamped when placed in the slot.

[0015] Preferably, the threaded rod is fixedly connected to an external drive motor, and the threaded rod is rotated by the external drive motor.

[0016] Preferably, a limiting shaft is provided inside the upper outer wall of the base plate to limit the position of the end of the threaded rod.

[0017] Compared with the prior art, the present invention provides a terminal insertion and extraction force testing mechanism, which has the following beneficial effects:

[0018] By separating the terminal placement slot and the terminal fixing fixture, and fixing the terminal placement slot to the fixing plate, the fixing plate can be replaced when different sizes of terminals need to be fixed. The spacing between the terminal placement slots in front of different fixing plates is different, so as to adapt to the placement of terminals of different sizes. By simply replacing the fixing plate, the testing mechanism can accurately adapt to various terminals, meet diverse testing needs, and reduce the cost of replacing different testing equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a terminal insertion and extraction force testing mechanism according to the present invention.

[0020] Figure 2 This is a front view structural diagram of a terminal insertion and extraction force testing mechanism according to the present invention.

[0021] Figure 3 This is a side view of a terminal insertion and extraction force testing mechanism according to the present invention.

[0022] Figure 4 This is a partial structural diagram of the terminal insertion slot area of ​​this utility model.

[0023] Figure 5 This is a partial structural schematic diagram of the side cross-section of the fixing plate area of ​​this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the present invention, showing the placement of terminals with different inner diameter spacings into the slot.

[0025] In the diagram: 1. Threaded rod; 2. Guide shaft; 3. Electronic tension gauge; 4. Base plate; 5. Ejector pin; 6. Terminal fixing fixture; 7. Terminal clamping block; 8. Terminal insertion slot; 9. Limiting block; 10. Fixing bracket; 11. Fastening bolt; 12. First groove; 13. Limiting plate; 14. Fixing plate; 15. Threaded sleeve; 16. Fastening screw; 17. Second groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-6 The terminal insertion and extraction force testing mechanism shown includes a base plate 4 and a threaded rod 1 mounted on the upper end of the base plate 4;

[0028] An electronic tension gauge 3 is installed on the front side of the threaded rod 1;

[0029] A pin 5 is provided on the lower outer wall of the electronic tensile gauge 3;

[0030] A terminal fixing fixture 6 is fixedly connected to the upper outer wall of the base plate 4. A terminal placement groove 8 is provided inside the front outer wall of the terminal fixing fixture 6 for pre-fixing the terminal position. A terminal clamping block 7 is provided on the front side of the terminal fixing fixture 6 to restrict the terminal position. The terminal is placed in the terminal placement groove 8 for initial positioning. Then, the terminal clamping block 7 is operated to firmly fix the terminal in the terminal placement groove 8, ensuring that the terminal will not move during testing. The drive device is activated, driving the threaded rod 1 to rotate, causing the electronic tension gauge 3 and the ejector pin 5 to move vertically. 5. Gradually approach the terminal. When the ejector pin 5 contacts the terminal, the insertion and extraction force is applied. During the insertion and extraction operation of the ejector pin 5 on the terminal, the electronic tension gauge 3 measures the magnitude of the insertion and extraction force in real time and displays the measurement data on the external display screen. The operator observes and records the insertion and extraction force value displayed by the electronic tension gauge 3. After completing one insertion and extraction force test, the drive device is turned off, the threaded rod 1 stops rotating, the ejector pin 5 stops applying force to the terminal, the ejector pin 5 is removed from the terminal, and the tested terminal is taken out. The debris and residual debris on the terminal fixing fixture 6 are cleaned.

[0031] A fixing plate 14 is provided on the rear side of the terminal insertion slot 8 to restrict the position of the terminal insertion slot 8. A first groove 12 is provided inside the front outer wall of the terminal fixing fixture 6 to separate the fixing plate 14 and the terminal fixing fixture 6. The first groove 12 inside the front outer wall of the terminal fixing fixture 6 allows the fixing plate 14 and the terminal fixing fixture 6 to be separated. When it is necessary to test terminals of different sizes, the spacing of the terminal insertion slot 8 can be adjusted by replacing the fixing plate 14 of different specifications, so as to adapt to the placement of terminals of different sizes.

[0032] like Figure 4 and Figure 5 As shown, two second grooves 17 are provided on the rear side of the fixing plate 14 and inside the front outer wall of the terminal fixing fixture 6. Threaded sleeves 15 are fixedly connected to the lower inner walls of the two second grooves 17. Two limiting plates 13 are fixedly connected to the rear outer wall of the fixing plate 14. Fastening screws 16 that engage with the threaded sleeves 15 are provided inside the upper outer walls of the two limiting plates 13 to limit the position of the fixing plate 14.

[0033] After selecting a suitable fixing plate 14, align it with the second groove 17 and insert it, ensuring that the limiting plate 13 on the fixing plate 14 accurately corresponds to the position of the second groove 17, and that the fastening screw 16 hole on the limiting plate 13 is aligned with the threaded sleeve 15. Then, rotate the fastening screw 16 clockwise to gradually screw it into the threaded sleeve 15. As the fastening screw 16 is tightened, the pressure between the limiting plate 13 and the outer wall of the front end of the terminal fixing fixture 6 gradually increases, finally fixing the fixing plate 14 firmly on the terminal fixing fixture 6. This ensures that during the terminal insertion and extraction force test, the fixing plate 14 can stably restrict the position of the terminal in the groove 8, ensuring the accuracy of the test.

[0034] like Figure 1 As shown, a fixing bracket 10 is fixedly connected to the upper outer wall of the base plate 4 to restrict the fixed position of the threaded rod 1. A guide shaft 2 is fixedly connected between the inner walls of the upper and lower ends of the fixing bracket 10 and in front of the threaded rod 1 to guide the direction of the electronic tension gauge 3. A limit block 9 is fixedly connected to the outer wall of the rear end of the electronic tension gauge 3 to fit between the threaded rod 1 and the guide shaft 2.

[0035] During the terminal insertion and extraction force test, the drive threaded rod 1 rotates, and the electronic tensile gauge 3, under the action of the threaded rod 1 and the guide shaft 2, drives the ejector pin 5 to move vertically, applying insertion and extraction force to the terminal. The limiting block 9 is sleeved between the threaded rod 1 and the guide shaft 2, and is threadedly engaged with the threaded rod 1, so that the electronic tensile gauge 3 can move up and down with the rotation of the threaded rod 1. At the same time, the limiting block 9 is in close contact with the guide shaft 2, ensuring that the electronic tensile gauge 3 always moves along the direction of the guide shaft 2 during the movement and does not produce lateral displacement.

[0036] like Figure 1 As shown, fastening bolts 11 that engage with the terminal fixing fixture 6 are provided inside the front outer wall of the terminal clamping block 7 and near the left and right sides respectively, in order to limit the position of the terminal clamping block 7 and control whether the terminal placed in the slot 8 is clamped.

[0037] When it is necessary to clamp the terminal placed in the slot 8, the operator rotates the fastening bolt 11 clockwise with a tool. Due to the transmission action of the thread, the fastening bolt 11 is gradually screwed into the terminal fixing fixture 6, thereby causing the terminal pressure block 7 to move towards the terminal and finally press the terminal tightly, thus achieving a firm clamping of the terminal.

[0038] like Figure 1 As shown, the threaded rod 1 is fixedly connected to an external drive motor. The external drive motor drives the threaded rod 1 to rotate. A limit shaft is provided inside the upper outer wall of the base plate 4 to limit the position of the end of the threaded rod 1.

[0039] When the drive motor starts, the rotation of its output shaft is transmitted to the threaded rod 1 through the connecting structure, causing the threaded rod 1 to start rotating. The presence of the limit shaft can prevent the threaded rod 1 from rotating excessively, avoiding collisions between the electronic tensile gauge 3, the ejector pin 5, and other structures, or damage to the threaded rod 1 and related components due to the threaded rod 1 rotating beyond the reasonable range, thereby ensuring the safe operation of the entire testing mechanism.

[0040] The implementation principle of this embodiment is as follows: The terminal is placed in the terminal insertion slot 8 for initial positioning. Then, the terminal clamping block 7 is operated to firmly fix the terminal in the slot 8, ensuring that the terminal will not move during testing. The drive device is activated, driving the threaded rod 1 to rotate, causing the electronic tension gauge 3 and the ejector pin 5 to move vertically. The ejector pin 5 gradually approaches the terminal. When the ejector pin 5 contacts the terminal, insertion and extraction force is applied. During the insertion and extraction operation of the ejector pin 5 on the terminal, the electronic tension gauge 3 measures the magnitude of the insertion and extraction force in real time and displays the measurement data on an external display screen. The operator observes and records the electronic tension gauge. The insertion and extraction force value displayed by the force gauge 3 is used to complete one insertion and extraction force test. After that, the drive device is turned off, the threaded rod 1 stops rotating, the ejector pin 5 stops applying force to the terminal, the ejector pin 5 is removed from the terminal, and the tested terminal is taken out. The debris and residual debris on the terminal fixing fixture 6 are cleaned. The first groove 12 opened inside the outer wall of the front end of the terminal fixing fixture 6 allows the fixing plate 14 and the terminal fixing fixture 6 to be separated. When it is necessary to test terminals of different sizes, the spacing of the terminal insertion slot 8 can be adjusted by replacing the fixing plate 14 of different specifications, so as to adapt to the placement of terminals of different sizes.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A terminal insertion and extraction force testing mechanism, comprising a base plate (4) and a threaded rod (1) mounted on the upper end of the base plate (4). An electronic tension gauge (3) is provided on the front side of the threaded rod (1); The lower outer wall of the electronic tensile gauge (3) is provided with a pin (5); The upper outer wall of the base plate (4) is fixedly connected to a terminal fixing fixture (6). The front outer wall of the terminal fixing fixture (6) is provided with a terminal insertion groove (8) for pre-fixing the position of the terminal. A terminal pressing block (7) is provided on the front side of the terminal fixing fixture (6) to limit the position of the terminal. Its features are: A fixing plate (14) is provided on the rear side of the terminal insertion slot (8) to restrict the position of the terminal insertion slot (8). A first groove (12) is provided inside the front outer wall of the terminal fixing fixture (6) to separate the fixing plate (14) and the terminal fixing fixture (6).

2. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: Two second grooves (17) are provided on the rear side of the fixing plate (14) and inside the front outer wall of the terminal fixing fixture (6). The lower inner walls of the two second grooves (17) are fixedly connected with threaded sleeves (15).

3. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: The outer rear wall of the fixed plate (14) is fixedly connected to two limiting plates (13). The upper outer wall of the two limiting plates (13) is provided with fastening screws (16) that engage with the threaded sleeve (15) to limit the position of the fixed plate (14).

4. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: A fixing frame (10) is fixedly connected to the upper outer wall of the base plate (4) to limit the fixed position of the threaded rod (1). A guide shaft (2) is fixedly connected between the upper and lower inner walls of the fixing frame (10) and in front of the threaded rod (1) to guide the direction of the electronic tension gauge (3).

5. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: The rear outer wall of the electronic tensile gauge (3) is fixedly connected to a limiting block (9) so as to be fitted between the threaded rod (1) and the guide shaft (2).

6. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: The terminal clamping block (7) has fastening bolts (11) that are screwed into the terminal fixing fixture (6) on the inner side of the front outer wall and near the left and right sides, respectively, in order to limit the position of the terminal clamping block (7) and control whether the terminal is placed in the slot (8).

7. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: The threaded rod (1) is fixedly connected to an external drive motor, and the threaded rod (1) is rotated by the external drive motor.

8. The terminal insertion and extraction force testing mechanism according to claim 1, characterized in that: The upper outer wall of the base plate (4) is provided with a limiting shaft to limit the position of the end of the threaded rod (1).

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