Connector terminal temperature rise test fixture

Abstract

This application provides a connector terminal temperature rise testing fixture, including: a housing, terminal clamps disposed within the housing, and an adjustment mechanism; through holes are provided on the left and right side walls of the housing, and the top cover of the housing is fixed to the side walls of the housing by a snap fastener; the terminal clamps include a first clamp and a second clamp, respectively used to clamp the male and female connector terminals to be tested; each clamp includes an upper clamp and a lower clamp, with positioning holes and fixing holes provided in the upper and lower clamps, a positioning rod passing through the positioning holes to position the upper and lower clamps, and a spring installed between the upper and lower clamps and above the positioning rod; a locking bolt passes through the fixing hole to fix the clamp to a fixed seat; the adjustment mechanism includes a guide rail and a slider mounted on the guide rail, with a fixed seat mounted on the slider; a fastening bolt is provided between the fixed seat and the guide rail to lock the fixed seat to the guide rail. This achieves temperature rise testing for terminals with different insertion depths, improving the accuracy and convenience of the test.

Description

Technical Field

[0001] This application relates to the field of fixture technology, and in particular to a fixture for testing the temperature rise of connector terminals. Background Technology

[0002] Temperature rise testing is one of the important safety performance tests for electronic and electrical products, used to evaluate the quality and electrical safety characteristics of electrical products. During normal use, electrical products may experience excessive temperature rise due to the heat generated by high-current components. Prolonged operation under such conditions may degrade the performance of insulation materials, potentially leading to hazards such as electric shock, burns, or fire.

[0003] Terminal temperature rise testing involves testing the connector terminals and their insulating housing as a whole under rated current, overcurrent, and short-circuit conditions, recording the temperature rise data after applying the test current at room temperature. Traditional temperature rise testing methods include contact and non-contact methods. Contact temperature rise testing utilizes contact temperature sensors, such as thermocouples, while non-contact temperature rise testing includes infrared thermometers. These techniques obtain temperature data either by directly measuring the terminal surface temperature or indirectly using the principle of infrared radiation.

[0004] During actual use, the insertion and connection status of terminal blocks may change, and different insertion and connection statuses will cause changes in the temperature rise of the terminals. Currently, no temperature rise testing fixture has been found for this situation. Summary of the Invention

[0005] In view of this, the present application provides a connector terminal temperature rise test fixture to solve at least one problem existing in the background art.

[0006] In a first aspect, one embodiment of this application provides a connector terminal temperature rise testing fixture, including: a housing, a terminal clamp disposed in the housing, and an adjustment mechanism; through holes are provided on the left and right side walls of the housing, and the top cover of the housing is fixed to the side walls of the housing by a buckle;

[0007] The terminal clamp includes a first clamp and a second clamp, which are used to clamp the male and female ends of the connector terminals to be tested, respectively. Each clamp includes an upper clamp and a lower clamp, and the upper and lower clamps are provided with positioning holes and fixing holes. A positioning rod passes through the positioning holes to position the upper and lower clamps. A spring is installed between the upper and lower clamps and above the positioning rod. A locking bolt passes through the fixing holes to fix the clamp to the fixing base.

[0008] The adjusting mechanism includes a guide rail and a slider mounted on the guide rail, and a fixed seat mounted on the slider; a fastening bolt is provided between the fixed seat and the guide rail for locking the fixed seat to the guide rail.

[0009] In conjunction with the first aspect of this application, in an optional embodiment, the adjusting mechanism further includes a rack, a gear meshing with the rack, and an adjusting knob. The adjusting knob and the gear are coaxially arranged via a connecting rod. The adjusting knob is located at one end of the connecting rod, and the other end of the connecting rod is fixed to the fixed base.

[0010] In conjunction with the first aspect of this application, in an optional embodiment, the connecting rod is mounted on the fixing seat by a fixing strip, and the fastening bolt passes through one end of the fixing strip.

[0011] In conjunction with the first aspect of this application, in an optional embodiment, a scale is installed above the front panel of the housing, and a slit is opened below it; a pointer is fixed between the adjustment knob and the gear, the adjustment knob passes through the slit, and the pointer and the adjustment knob are located outside the housing.

[0012] In conjunction with the first aspect of this application, in an alternative embodiment, a heat insulation layer is provided inside the box.

[0013] In conjunction with the first aspect of this application, in an alternative embodiment, the top cover is made of a transparent material.

[0014] In conjunction with the first aspect of this application, in an alternative embodiment, the terminal clamp is provided with a groove.

[0015] The connector terminal temperature rise testing fixture of this application embodiment utilizes an adjusting mechanism to fix the terminal clamps in the adjusting mechanism, enabling temperature rise testing for different insertion depths of the terminals. By employing a closed enclosure with a heat insulation layer, the terminal clamps and adjusting mechanism are housed within the enclosure, preventing rapid heat dissipation from the connector terminals under test and improving the accuracy of temperature testing. The use of an adjusting knob, scale, and pointer allows the pointer and terminal clamps to move synchronously with the adjusting knob, making the adjustment of the distance between the male and female terminals simpler and more intuitive, thus improving the ease of use of the device.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a perspective view of the connector terminal temperature rise test fixture in this application;

[0019] Figure 2 This is a perspective view of the connector terminal temperature rise test fixture in this application;

[0020] Figure 3 This is a schematic diagram of the terminal clamp in this application. Detailed Implementation

[0021] To make the technical solutions and beneficial effects of this application more apparent and understandable, the technical solutions in the embodiments of this application are clearly and completely described below by listing specific examples. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] It should be noted that the terms "first," "second," etc., used in this application may be used to describe various elements, but these elements are not limited by these terms. These terms are used only to distinguish one element from another, and not to describe a specific order or sequence. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, not excluding the presence or addition of one or more other features.

[0024] This application provides a connector terminal temperature rise testing fixture. Please refer to... Figures 1-3 The system includes: a housing 1, terminal clamps 20 disposed within the housing, and an adjustment mechanism. The top cover 11 of the housing 1 is fixed to the side wall via a latch 13, allowing the top cover 11 to open and close. The rear of the top cover 11 is connected to the rear side wall of the housing via a hinge 14, facilitating rotation during opening and closing. The top cover 11 is made of a transparent plate for easy observation of the terminal testing. The inner wall of the housing 1 is equipped with a heat insulation layer (not shown in the figure) to prevent excessive heat loss during testing and improve the accuracy of temperature measurement. The heat insulation layer is made of materials such as fiberglass and foam plastic. Through holes 15 are provided on the left and right side walls of the housing to allow the terminals of the connectors to be tested to be inserted into the housing for fixation.

[0025] Terminal clamp 20 is installed inside housing 1 and is used to fix the connector terminals to be tested. It includes a first clamp 201 and a second clamp 202, which are used to clamp the male connector 01 and female connector 02 of the connector terminals, respectively. The first clamp 201 and the second clamp 202 have the same structure. An exploded view of the terminal clamp and its connection structure are shown below. Figure 3As shown. Each clamp includes an upper clamping plate 21 and a lower clamping plate 22. Grooves are provided on the upper clamping plate 21 and the lower clamping plate 22 at opposite positions to facilitate fixing the connector terminals. The upper clamping plate 21 and the lower clamping plate 22 are also provided with positioning holes and fixing holes. A positioning rod 24 passes through the positioning holes to position the upper clamping plate 21 and the lower clamping plate 22. A spring 23 is installed between the upper clamping plate 21 and the lower clamping plate 22 and above the positioning rod 24 to open the upper clamping plate 21 and the lower clamping plate 22 for easy placement of the terminal to be tested. Locking bolts 251 and 252 pass through the fixing holes to fix the terminal clamp to the fixing base 26. Optionally, the upper clamping plate 21 and the lower clamping plate 22 are made of insulating material, such as phenolic resin.

[0026] The adjusting mechanism includes a guide rail 31 and sliders 321 and 322 mounted on the guide rail 31. A fixed base 26 is mounted on the slider 321. The first clamp 201 and the second clamp 202 are respectively mounted on the first slider 321 and the second slider 322 via the fixed base. A fastening bolt is provided between the fixed base 26 and the guide rail 31 for locking the fixed base 26 to the guide rail 31.

[0027] A scale 12 is mounted on the upper part of the front panel of the housing 1, and a slit 16 is opened below it. The adjustment mechanism also includes a rack 33, gears 341 and 342 meshing with the rack 33, pointers 361 and 362, and adjustment knobs 351 and 352. The guide rail 31, gears 341 and 342, and rack 33 are installed in the housing 1. The first adjustment knob 351 and the second adjustment knob 352 are respectively fixed coaxially with the first gear 341 and the second gear 342 via the first connecting rod 391 and the second connecting rod 392. A pointer is fixed between the adjustment knob and the gear, and above the connecting rod. The adjustment knob is located at one end of the connecting rod, and the other end of the connecting rod passes through the slit 16 and is fixed to the mounting base. The pointer and the adjustment knob are both located outside the housing 1.

[0028] The first pointer 361 is positioned between the first adjusting knob 351 and the first gear 341. The second pointer 362 is positioned between the second adjusting knob 352 and the second gear 342. As the adjusting knobs 351 and 352 rotate, the pointers 361 and 362 move on the surface of the scale 12 to indicate the distance between the two end clamps 201 and 202.

[0029] Connecting rods 391 and 392 extend into the housing 1 through slit 16 and are mounted on the mounting base 26 via fixing strips 381 and 382. Fastening bolts 371 and 372 pass through one end of the fixing strips 381 and 382 to lock clamps 201 and 202 to the guide rail 31. The first clamp 201 is locked to the guide rail 31 by the first fastening bolt 371. The second clamp 202 is locked to the guide rail 31 by the second fastening bolt 372.

[0030] The fixed base 26 and the fixed bars 381 and 382 are all fixed on the slider 32. By rotating the adjustment knobs 351 and 352, the gears 341 and 342 can be driven to rotate on the rack 33, which in turn drives the terminal clamp 20 and the pointers 361 and 362 fixed on the slider 32 to move along the guide rail 31.

[0031] The method of using the connector terminal temperature rise test fixture in this application embodiment is as follows:

[0032] First, install the connector terminal to be tested. Loosen the latch 13 and open the top cover 11; attach the temperature sensor to the connector terminal to be tested. The connector terminal to be tested is connected to the wire harness 03. Insert the male connector 01 and female connector 02 of the connector terminal into the housing 1 through the through holes 15 on the left and right side walls of the housing 1, respectively; place the male connector 01 and female connector 02 of the terminal to be tested into the grooves of the two terminal clamps 201 and 202, respectively, tighten the locking bolts 251 and 252, push the upper clamp 21 downward to move the lower clamp 22, and fix the connector terminal to be tested in the terminal clamps 201 and 202.

[0033] Next, adjust the spacing between the male connector 01 and the female connector 02 of the connector under test and collect temperature signals. Rotate the first adjustment knob 351 to drive the first gear 341 to rotate on the rack 33, which in turn drives the first clamp 201, which is fixed on the first slider 321, to slide on the slide rail 31 via the first connecting rod 391. The first pointer 361 also moves synchronously, so that the pointer 38 is aligned with the 0 mark on the scale. Then, tighten the first fastening bolt 371 so that it abuts against the guide rail 31, thereby locking the terminal clamp 201 and preventing it from moving.

[0034] Next, rotate the second adjustment knob 352 to make the second gear 342 rotate on the rack 33. This causes the second clamp 202 and the second pointer 362 to slide simultaneously via the second connecting rod 392. Observe the position of the second pointer 362 to determine the distance between the male connector 01 and the female connector 02 as the first distance. At this time, tighten the second fastening bolt 392 to lock the second clamp 202 onto the guide rail 31. Close the top cover 11, fasten the latch 13, and seal the housing 1. During the test, the test status can be observed through the transparent top cover 11. Connect the current to allow it to flow through the terminals of the connector under test. The temperature gradually rises. The temperature change of the terminals of the connector under test is collected by a temperature sensor fixed to the connector terminals, and the external temperature measuring instrument obtains the temperature signal.

[0035] Wait for a period of time to allow the temperature of the connector terminals under test to return to room temperature.

[0036] Next, the distance between the male connector 01 and the female connector 02 of the connector under test is adjusted again, and the temperature signal is collected again. Loosen the second fastening bolt 372, rotate the second adjustment knob 352, and simultaneously adjust the second clamp 202 and the second pointer 362 to the left or right. Observe the position of the second pointer 362 to determine the distance between the male connector 01 and the female connector 02 as the second distance. At this time, tighten the second fastening bolt 392 to lock the second clamp 202 onto the guide rail 31. The current is switched on again, allowing it to flow through the connector terminals under test. The temperature gradually rises, and the temperature change of the connector terminals under test is collected by a temperature sensor fixed to the connector terminals. An external temperature measuring instrument obtains the temperature signal.

[0037] According to the test requirements, repeat the above process, adjust the terminal insertion depth and collect temperature data multiple times, and finally complete the test.

[0038] In the temperature rise test, an adjustable spacing mechanism is used to fix the terminal clamps, enabling temperature rise testing for different terminal insertion depths. By employing a closed enclosure with a heat insulation layer, the terminal clamps and adjustable spacing mechanism are housed within the enclosure, preventing rapid heat dissipation from the connector terminals under test and improving the accuracy of temperature testing. The use of an adjustment knob, scale, and pointer allows the pointer and terminal clamps to move synchronously with the adjustment knob, making the adjustment of the male and female terminal spacing simpler and more intuitive, thus improving the ease of use of the device.

[0039] The relevant content of each unit in this embodiment can be referred to the relevant content of the units with the same reference numerals in any of the foregoing embodiments, and will not be repeated here.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A connector terminal temperature rise testing fixture, characterized in that, include: The enclosure includes a terminal clamp and an adjustment mechanism installed inside it; the left and right side walls of the enclosure have through holes, and the top cover of the enclosure is fixed to the side walls of the enclosure by fasteners; The terminal clamp includes a first clamp and a second clamp, which are used to clamp the male and female ends of the connector terminals to be tested, respectively. Each clamp includes an upper clamp and a lower clamp, and the upper and lower clamps are provided with positioning holes and fixing holes. A positioning rod passes through the positioning holes to position the upper and lower clamps. A spring is installed between the upper and lower clamps and above the positioning rod. A locking bolt passes through the fixing holes to fix the clamp to the fixing base. The adjusting mechanism includes a guide rail and a slider mounted on the guide rail, and a fixed seat mounted on the slider; a fastening bolt is provided between the fixed seat and the guide rail for locking the fixed seat to the guide rail.

2. The connector terminal temperature rise testing fixture according to claim 1, characterized in that, The adjusting mechanism further includes a rack, a gear meshing with the rack, and an adjusting knob. The adjusting knob and the gear are coaxially arranged via a connecting rod. The adjusting knob is located at one end of the connecting rod, and the other end of the connecting rod is fixed to the fixed base.

3. The connector terminal temperature rise testing fixture according to claim 2, characterized in that, The connecting rod is installed on the fixed base by a fixing strip, and the fastening bolt passes through one end of the fixing strip.

4. The connector terminal temperature rise testing fixture according to claim 2, characterized in that, A scale is installed on the top of the front panel of the housing, and a slit is opened below it; a pointer is fixed between the adjustment knob and the gear and on the connecting rod, and the other end of the connecting rod passes through the slit and is fixed to the mounting base. The pointer and the adjustment knob are located outside the housing.

5. The connector terminal temperature rise testing fixture according to claim 1, characterized in that, The box is equipped with a heat insulation layer.

6. The connector terminal temperature rise test fixture according to claim 1, characterized in that, The top cover is made of transparent material.

7. The connector terminal temperature rise test fixture according to claim 1, characterized in that, The terminal clamp is provided with a groove.

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