CN209296830U - A kind of power device detection jig - Google Patents

Abstract

The utility model discloses a power device detection jig, which comprises a base, a column and a detection table are arranged on the base, a console is fixedly arranged on the upper end of the column, and an adjustment plate is connected to the console to control The lower end of the table is provided with a telescopic rod connected with the sliding seat, a connecting rod is hinged between the telescopic rod and the adjustment plate, and the other end of the telescopic rod is connected with a sliding seat; The card slot and the detection probe; the utility model is driven by the movement of the adjustment plate, thereby realizing the contact and separation of the power device to be tested and the detection probe. Compared with the prior art, it does not need to frequently insert and pull out the power device, thereby This prevents the tin-plated layer on the pins of the power device from being scratched, and improves the appearance yield of the product.

Description

A power device testing fixture

technical field

The utility model relates to the technical field of electronic component detection devices, in particular to a power device detection jig.

Background technique

Power devices need to undergo quality inspection before leaving the factory to ensure the qualified rate of the products. In the prior art, power devices are often tested by installing them on the inspection fixture, which often requires frequent plugging and unplugging in the above inspection steps. As a result, the tin-plated layer of the pins of the power device is scratched by the inspection fixture, which affects the qualification rate of the outer tube of the power device and causes unnecessary damage to the product performance.

The Chinese utility model patent with the publication number CN206311636U disclosed a clamshell-type chip detection fixture on July 7, 2017, including a stage, a support plate, a cover plate and a base plate. The deck on the base plate is movably connected, the carrier is installed on the base plate, a notch groove is provided on one side of the cover plate, and a toggle is installed in the notch groove of the cover plate, and the One side of the substrate is provided with a buckle seat corresponding to the toggle, and a rotating shaft is embedded in the through holes of the respective rotating shafts of the cover plate and the toggle, so that the toggle can rotate around the shaft in the notch groove, and the snap of the toggle The hook part is used to buckle with the buckle seat part, a mounting hole is opened on the base plate, the stage is inserted into the mounting hole, and the support plate is installed on the lower surface of the base plate and contacts the lower surface of the stage. The utility model is flexible and convenient through the setting of the pull button on the cover plate, and is convenient for taking and placing the chip to be tested. accuracy and sensitivity.

Contents of the invention

Aiming at the defect that the tin-plated layer of the power device pins is easily scratched in the prior art, the utility model discloses a power device detection jig, which can effectively protect the pins of the power device and avoid The tin-plated layer is scratched during the inspection process, which improves the yield rate of product appearance.

The utility model realizes above-mentioned object through following technical scheme:

A power device testing jig, comprising a base, on which a testing table and a column are arranged, and is characterized in that: a console is fixedly arranged on the upper end of the column, an adjustment plate is hinged on the upper end of the console, and an adjusting plate is hinged on the lower end of the console. A telescopic rod is slidably arranged, and the telescopic rod is connected to the adjustment plate through a connecting rod; the other end of the telescopic rod is fixedly connected with a sliding seat; the bottom surface of the sliding seat and the top surface of the detection table are arranged in a card slot that cooperates with each other and detection probes.

A limit slide bar is also arranged on the base, and the slide seat is placed on the limit slide bar.

There are 6 probes in total, and each probe is connected with an independent test wire.

An installation groove is arranged on the column, and fastening bolts for fixing the console are arranged in the installation groove.

A linear motion bearing is arranged between the telescopic rod and the console.

A limit nut is connected with a screw on the limit slide bar, and a buffer washer is arranged on the limit nut.

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

1. In the utility model, a console is fixedly arranged on the upper end of the column, and an adjustment plate is connected to the console, and a telescopic rod connected with a sliding seat is arranged at the lower end of the console, and a connecting rod is hinged between the telescopic rod and the regulating board. The other end of the telescopic rod is connected with a sliding seat; and the bottom surface of the sliding seat and the top surface of the detection table are provided with a card slot and a detection probe that cooperate with each other; when the utility model is used, the chip to be tested is placed in the card slot, and then The adjustment plate drives the telescopic rod to move downward, and then the sliding seat moves to the testing table, so that the chip to be tested is in contact with the probe, so as to complete the chip test. During the testing process, there is no need to frequently plug and unplug the pins, thereby avoiding tin plating on the pins. To be scratched, improve the yield rate of the outer tube of the product.

2. The utility model is also equipped with a limit slide bar on the base, and the slide seat is placed on the limit slide bar to limit the position of the slide seat, avoiding the deviation of the slide seat and ensuring that the slide seat is always in the correct working position. position, to ensure the reliability and stability of the detection fixture.

3. There are 6 probes in this utility model, and each probe is connected with an independent test wire, which is used to detect the BV, BI, EV, EI, CV, and CI values of the chip to be tested, so as to avoid

The increase of the resistance of the test lead leads to a large deviation of the test result and improves the accuracy of the test.

4. The utility model is provided with a mounting groove on the column, and fastening bolts are arranged in the mounting groove, which is convenient for adjusting the position of the console as required, thereby ensuring that the movement of the telescopic rod can transfer the chip to be tested to the best test position, thereby increasing the reliability and accuracy of the test.

5. A linear motion bearing is arranged between the telescopic rod and the console of the utility model, which reduces the movement resistance of the telescopic rod, ensures smooth movement of the telescopic rod, reduces the wear of the telescopic rod, and prolongs the service life of the equipment.

6. In the utility model, the limit nut is threaded on the limit slide rod, and the limit nut is provided with a buffer gasket to limit the downward movement distance of the painting and avoid the probe from being squeezed due to excessive movement of the telescopic rod. Test chips, strengthen the protection of chip pins, and improve the pass rate of product appearance.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the structure of the sliding seat described in the utility model;

Fig. 3 is the sectional view of line A-A of the present utility model;

Reference signs: 1, base, 2, detection platform, 3, column, 4, console, 5, adjustment plate, 6, telescopic rod, 7, connecting rod, 8, sliding seat, 9, card slot, 10, Detection probe, 11, limit slide bar, 12, installation groove, 13, fastening bolt, 14, linear motion bearing, 15, limit nut, 16, buffer gasket.

Detailed ways

The utility model will be further described below by specific embodiment:

Example 1

This embodiment, as the best embodiment of the present utility model, discloses a power device testing jig, the specific structure is shown in Figure 1, including a base 1 on which a testing platform 2 and Column 3, the upper end of column 3 is provided with installation groove 12, is provided with fastening bolt 13 in described installation groove 12, and described fastening bolt 13 is fixedly installed with the top of column 3 with console 4; The upper end is hinged with an adjustment plate 5, and the lower end of the console 4 is slidingly provided with a telescopic rod 6 through a linear motion bearing 14, and a connecting rod 7 is arranged between the telescopic rod 6 and the adjusting plate 5, and the two ends of the connecting rod 7 are respectively hinged and adjusted. On the plate 5 and the telescopic rod 6; the bottom surface of the slide seat 8 and the top surface of the detection table 2 are provided with a card slot 9 and a detection probe 10 that cooperate with each other, and there are 6 detection probes 10 in total, and each Connected with independent test wires; the lower end of the telescopic rod 6 is fixedly connected with a sliding seat 8, and the base 1 is provided with a limit slide bar 11, and the sliding sleeve of the slide seat 8 is placed on the limit slide bar 11; A limit nut 15 for limiting the position of the slide seat 8 is connected with a threaded thread on the position slide bar 11 , and a buffer washer 16 is arranged on the top surface of the limit nut 15 .

The working process of the utility model: first, place the power chip to be detected in the slot on the bottom surface of the sliding seat, press the adjusting plate downward, and the movement of the adjusting plate drives the connecting rod and the telescopic rod to move downward, and then pushes the sliding seat When the sliding seat reaches the end of the movement, the detection probe contacts the power chip to complete the detection of the chip. After the detection is completed, the adjustment plate is pulled upward to drive the sliding seat to move upward, so that the chip to be tested and the detection probe are connected. Needle separation, at this time, replace the chip to be tested and repeat the above steps to realize the continuous detection of the chip to be tested; the utility model detects through the direct contact between the detection probe and the joint of the chip to be tested. The contact and separation of the detection probe is simple, and does not require frequent plugging and unplugging of the power chip, thereby better protecting the tin-plated layer on the pin and improving the yield of the outer tube of the chip; and the detection described in the utility model The jig also has the advantages of simple structure, easy operation, and low cost for popularization and application.

Claims (6)

1. A power device testing jig, comprising a base (1), on which a testing platform (2) and a column (3) are arranged, characterized in that: the upper end of the column (3) is fixed A console (4) is provided, the upper end of the console (4) is hinged with an adjustment plate (5), and the lower end of the console (4) is slidingly provided with a telescopic rod (6), and the telescopic rod (6) and the adjustment plate (5) ) are connected by a connecting rod (7); the other end of the telescopic rod (6) is fixedly connected with a sliding seat (8); the bottom surface of the sliding seat (8) and the top surface of the detection table (2) are provided with mutual card slot (9) and detection probe (10). 2. A power device testing jig according to claim 1, characterized in that: the base (1) is also provided with a limit slide bar (11), and the slide seat (8) is sleeved on the limit position on the slider (11). 3 . The fixture for testing power devices according to claim 1 , characterized in that: there are 6 probes ( 10 ) in total, and each probe ( 10 ) is connected with an independent test wire. 4 . 4. A power device testing jig according to claim 1, characterized in that: the column (3) is provided with a mounting groove (12), and the mounting groove (12) is provided with a (4) fastening bolts (13). 5. A power device testing jig according to claim 1, characterized in that: a linear motion bearing (14) is arranged between the telescopic rod (6) and the console (4). 6. A power device testing jig according to claim 2, characterized in that: the limit slider (11) is threaded to connect the limit nut (15), and the limit nut (15) is A buffer gasket (16) is provided.