An optical device test fixture

Abstract

The present application aims to provide an optical device test fixture which is simple in structure, convenient for taking and placing products and does not cause damage to the products. The present application comprises a box body, a needle block module and a positioning module, the needle block module and the positioning module are arranged on the box body, the positioning module comprises a positioning block and a pressing block, the pressing block is rotationally fitted on the positioning block, the product to be tested is placed on the positioning block, the pressing block presses on the product to be tested, and the action end of the needle block module is in contact with the signal end of the product to be tested after the needle block module and the positioning block are detachably connected. The present application is applied to the technical field of electronic product testing.

Description

Technical Field

[0001] This invention relates to the field of electronic product testing technology, and in particular to a testing fixture for optical devices. Background Technology

[0002] In the testing of optical components, it is necessary to position, power, and extract signals from the products. Optical components are characterized by their small size, special structure, high appearance requirements, and sensitivity to changes in the test position. Therefore, the product carrier must have high positioning accuracy, be easy to place and remove, and not easily damage the product. However, most existing test carriers use contour slots to position and fix the product. The positioning accuracy of this solution relies excessively on the machining accuracy of the contour slot parts, which are difficult to manufacture. The dimensions of the contour slots are close to the product dimensions, making it inconvenient to place and remove the product. Furthermore, the product is easily scratched during the process of handling optical products, which have high appearance requirements. Scratches will have a significant impact on the test results.

[0003] A patent document with publication number CN209821238U discloses a PCBA rigid-flex board test fixture, which includes a pin plate assembly and a carrier plate assembly connected below the pin plate assembly. The pin plate assembly has a probe constraint block for limiting the probes, and the probes pass through the probe constraint block to electrically connect with the test points of the product under test. The carrier plate assembly includes a universal fixing plate and a product placement plate detachably mounted on the universal fixing plate. The product placement plate is provided with a tooling contouring groove adapted to the shape of the product under test. It is evident that this test fixture uses a tooling contouring groove to position the product; however, the tooling contouring groove is difficult to manufacture, and product handling is inconvenient, easily damaging the product. If a simple optical device test fixture could be designed that facilitates product handling and does not damage the product, the above problems could be effectively solved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an optical device testing fixture with a simple structure, which is easy to pick up and put down products and will not cause damage to the products.

[0005] The technical solution adopted in this invention is as follows: This invention includes a housing, a needle block module, and a positioning module. The needle block module and the positioning module are both disposed on the housing. The positioning module includes a positioning block and a pressing block. The pressing block is rotatably fitted on the positioning block. The product to be tested is placed on the positioning block, and the pressing block presses on the product to be tested. After the needle block module and the positioning block are detachably connected, the functional end of the needle block module is in contact with the signal end of the product to be tested.

[0006] Furthermore, the positioning block is provided with a positioning groove and a first magnet. The head of the product to be tested is fitted into the positioning groove, and the tail of the product to be tested is magnetically attracted to the first magnet.

[0007] Furthermore, the positioning block is also provided with several second magnets, and the pressing block is magnetically attracted to the second magnets.

[0008] Furthermore, the needle block module includes a carrier body, a mounting block, and a needle block assembly. The mounting block is disposed on the carrier body, and the needle block assembly is disposed on the mounting block. The functional end of the needle block assembly is in contact with the signal end of the product under test.

[0009] Furthermore, the pin assembly includes a first pin block, a second pin block, a PCB flexible board, and several probes. The carrier body is provided with several adapter copper pillars. The first pin block is disposed on the mounting block, and the second pin block is disposed on the first pin block. The probe passes through the second pin block and the first pin block in sequence and is connected to one end of the PCB flexible board. The head of the probe protrudes outside the second pin block and contacts the signal terminal of the product under test. The other end of the PCB flexible board is connected to several adapter copper pillars.

[0010] Furthermore, both the mounting block and the carrier body are provided with a number of third magnets, and the positioning block is provided with a number of fourth magnets, and the third magnets and the fourth magnets are magnetically attracted to each other.

[0011] Furthermore, the mounting block is provided with a plurality of first positioning holes, and the positioning block is provided with a plurality of first positioning pins, the first positioning pins being adapted to the first positioning holes.

[0012] Furthermore, the box body includes an upper cover and a lower cover. One side of the upper cover is hinged to one side of the lower cover by several torsion springs. The other side of the upper cover is provided with a latching protrusion, and the other side of the lower cover is rotatably provided with a buckle. The buckle is connected to the lower cover by several springs, and the latching protrusion and the buckle are adapted to each other.

[0013] Furthermore, the lower end face of the upper cover is provided with several elastic pressure bars and several inclined pressure blocks, and the positioning block is provided with several inclined surfaces. The elastic pressure bars press on the main body of the vehicle, and the inclined pressure blocks press on the inclined surfaces.

[0014] Furthermore, the main body of the carrier is provided with a plurality of second positioning holes, and the upper end face of the lower cover is provided with a plurality of second positioning pins, the second positioning pins being adapted to the second positioning holes.

[0015] The beneficial effects of this invention are as follows: When a product needs to be tested, first open the box, then take out the needle block module and the positioning module, separate the needle block module and the positioning module, open the pressure block, fit the head of the product to be tested into the positioning groove, and magnetically attach the tail of the product to be tested to the first magnet, thereby completing the product positioning operation. Then close the pressure block to press the pressure block onto the product, fixing the product and ensuring the stability of the product during testing. Then magnetically attach the needle block module and the positioning block together, so that the active end of the needle block module is in stable contact with the signal end of the product to be tested. Finally, close the box and test the product. After the product has been tested, open the box, then take out the needle block module and the positioning module, separate the needle block module and the positioning module, open the pressure block, and directly take out the product. Compared with traditional test fixtures, this invention does not require the use of contour grooves to position and fix the product, making it more convenient to pick up and put down the product and avoiding scratches on the product. Attached Figure Description

[0016] Figure 1 This is a perspective view of the invention in its closed state;

[0017] Figure 2 This is a perspective view of the invention in the open state;

[0018] Figure 3 This is an exploded view of the present invention;

[0019] Figure 4 This is a three-dimensional view of the needle block module;

[0020] Figure 5 This is an exploded view of the needle block module;

[0021] Figure 6 This is an exploded view of the needle block assembly;

[0022] Figure 7 This is a three-dimensional view of the positioning module in the closed state;

[0023] Figure 8 This is a 3D view of the positioning module in the open state. Detailed Implementation

[0024] like Figures 1 to 8As shown, in this embodiment, the present invention includes a housing, a needle block module 1, and a positioning module 2. Both the needle block module 1 and the positioning module 2 are disposed on the housing. The positioning module 2 includes a positioning block 3 and a pressing block 4. The pressing block 4 is rotatably fitted onto the positioning block 3. The product to be tested 5 is placed on the positioning block 3, and the pressing block 4 presses down on the product to be tested 5. After the needle block module 1 and the positioning block 3 are detachably connected, the functional end of the needle block module 1 contacts the signal end of the product to be tested 5. A visual calibration block 36 is provided on the positioning block 3.

[0025] In this embodiment, the positioning block 3 is provided with a positioning groove 6 and a first magnet 7. The head 32 of the product to be tested 5 is fitted into the positioning groove 6, and the tail 33 of the product to be tested 5 is magnetically attracted to the first magnet 7. The tail 33 of the product to be tested 5 is made of magnetic metal, and a connector 34 is provided on the tail 33.

[0026] In this embodiment, the positioning block 3 is further provided with a plurality of second magnets 8, and the pressing block 4 is magnetically attracted to the second magnets 8. The pressing block 4 is made of magnetic metal.

[0027] In this embodiment, the needle block module 1 includes a carrier body 9, a mounting block 10, and a needle block assembly 11. The mounting block 10 is disposed on the carrier body 9, and the needle block assembly 11 is disposed on the mounting block 10. The functional end of the needle block assembly 11 is in contact with the signal end of the product 5 to be tested. A handle 37 is provided on the carrier body 9.

[0028] In this embodiment, the pin assembly 11 includes a first pin block 12, a second pin block 13, a PCB flexible board 14, and several probes 15. The carrier body 9 is provided with several adapter copper pillars 16. The first pin block 12 is disposed on the mounting block 10, and the second pin block 13 is disposed on the first pin block 12. The probes 15 pass through the second pin block 13 and the first pin block 12 in sequence and connect to one end of the PCB flexible board 14. The head of the probe 15 protrudes outside the second pin block 13 and contacts the signal terminal of the connector 34. The other end of the PCB flexible board 14 is connected to the several adapter copper pillars 16. The probes 15, the PCB flexible board 14, and the adapter copper pillars 16 electrically connect the product 5 to the machine, completing the power supply and signal conversion for the product 5.

[0029] In this embodiment, the mounting block 10 and the carrier body 9 are each provided with a plurality of third magnets 17, and the positioning block 3 is provided with a plurality of fourth magnets 18. The third magnets 17 and the fourth magnets 18 are magnetically attracted to each other, so that the needle block module and the positioning module 2 can be magnetically attracted together, and the probe 15 is stably in contact with the connector 34.

[0030] In this embodiment, the mounting block 10 is provided with a plurality of first positioning holes 19, and the positioning block 3 is provided with a plurality of first positioning pins 20. The first positioning pins 20 are adapted to the first positioning holes 19 and play a positioning and guiding role in the combination of the pin block module and the positioning module 2.

[0031] In this embodiment, the box body includes an upper cover 21 and a lower cover 22. One side of the upper cover 21 is hinged to one side of the lower cover 22 by several torsion springs 23. A latching protrusion 24 is provided on the other side of the upper cover 21, and a latch 25 is rotatably provided on the other side of the lower cover 22. The bottom of the latch 25 is connected to the lower end face of the lower cover 22 by several springs 26. After the latching protrusion 24 and the latch 25 are adapted, the upper cover 21 is pressed onto the lower cover 22. The box body also includes a rotating shaft 35, which is rotatably fitted to one side of the lower cover 22. One side of the upper cover 21 is connected to the rotating shaft 35. The torsion springs 23 are sleeved on the rotating shaft 35. One end of the torsion spring 23 abuts against the lower end face of the upper cover 21, and the other end of the torsion spring 23 abuts against the upper end face of the lower cover 22. When it is necessary to open the top cover 21, press the buckle 25 to make the buckle 25 rotate, thereby causing the top of the buckle 25 to disengage from the latch protrusion 24, and the top cover 21 will automatically spring upward under the action of the torsion spring 23.

[0032] In this embodiment, the lower end face of the upper cover 21 is provided with a plurality of elastic pressure bars 27 and a plurality of inclined pressure blocks 28, and the positioning block 3 is provided with a plurality of inclined surfaces 29. The elastic pressure bars 27 press on the carrier body 9 to fix the needle block module 1, and the inclined pressure blocks 28 press on the inclined surfaces 29 to fix the positioning module.

[0033] In this embodiment, the carrier body 9 is provided with a plurality of second positioning holes 30, and the upper end face of the lower cover 22 is provided with a plurality of second positioning pins 31. The second positioning pins 31 are adapted to the second positioning holes 30, so that the needle block module 1 is positioned and fitted on the lower cover 22.

[0034] In this embodiment, the workflow of the present invention is as follows:

[0035] When product 5 needs to be tested, first open the upper cover 21, then take out the needle block module 1 and the positioning module 2, separate the needle block module 1 and the positioning module 2, open the pressure block 4, fit the head 32 of product 5 into the positioning groove 6, and magnetically attach the tail 33 of product 5 to the first magnet 7, thereby completing the positioning operation of product 5. Then close the pressure block 4 to press the pressure block 4 onto product 5 to fix product 5 and ensure the stability of product 5 during testing. Then magnetically attach the needle block module 1 and the positioning module 2 together to make the probe 15 stably contact the signal end of the product connector 34. Finally, close the upper cover 21 to fasten the upper cover 21 onto the lower cover 22, and then test product 5.

[0036] After product 5 completes the test, open the top cover 21, then remove the needle block module 1 and the positioning module 2, separate the needle block module 1 and the positioning module 2, open the pressure block 4, and directly remove product 5. Compared with traditional test fixtures, this invention does not require the use of contour grooves to position and fix the product, making product handling more convenient and avoiding scratches to the product.

Claims

1. An optical device testing fixture, comprising a housing, a pin block module (1), and a positioning module (2), wherein the pin block module (1) and the positioning module (2) are both disposed on the housing, characterized in that: The positioning module (2) includes a positioning block (3) and a pressing block (4). The pressing block (4) is rotatably fitted on the positioning block (3). The product to be tested (5) is placed on the positioning block (3), and the pressing block (4) presses on the product to be tested (5). After the needle block module (1) and the positioning block (3) are detachably connected, the working end of the needle block module (1) contacts the signal end of the product to be tested (5). The positioning block (3) is provided with a positioning groove (6) and a first magnet (7). The head of the product to be tested (5) is fitted into the positioning groove (6), and the tail of the product to be tested (5) is magnetically attracted to the first magnet (7). The positioning block (3) is also provided with several second magnets (8), and the pressing block (4) is magnetically attracted to the second magnets (8).

2. The optical device testing fixture according to claim 1, characterized in that: The needle block module (1) includes a carrier body (9), a mounting block (10) and a needle block assembly (11). The mounting block (10) is disposed on the carrier body (9), and the needle block assembly (11) is disposed on the mounting block (10). The working end of the needle block assembly (11) is in contact with the signal end of the product to be tested (5).

3. The optical device testing fixture according to claim 2, characterized in that: The pin assembly (11) includes a first pin block (12), a second pin block (13), a PCB flexible board (14), and several probes (15). Several adapter copper pillars (16) are provided on the carrier body (9). The first pin block (12) is provided on the mounting block (10), and the second pin block (13) is provided on the first pin block (12). The probe (15) passes through the second pin block (13) and the first pin block (12) in sequence and is connected to one end of the PCB flexible board (14). The head of the probe (15) is exposed outside the second pin block (13). The head of the probe (15) is in contact with the signal terminal of the product to be tested (5). The other end of the PCB flexible board (14) is connected to several adapter copper pillars (16).

4. The optical device testing fixture according to claim 2, characterized in that: The mounting block (10) and the carrier body (9) are each provided with a number of third magnets (17), and the positioning block (3) is provided with a number of fourth magnets (18). The third magnets (17) and the fourth magnets (18) are magnetically attracted to each other.

5. The optical device testing fixture according to claim 2, characterized in that: The mounting block (10) is provided with a plurality of first positioning holes (19), and the positioning block (3) is provided with a plurality of first positioning pins (20), the first positioning pins (20) being adapted to the first positioning holes (19).

6. The optical device testing fixture according to claim 2, characterized in that: The box body includes an upper cover (21) and a lower cover (22). One side of the upper cover (21) is hinged to one side of the lower cover (22) by several torsion springs (23). The other side of the upper cover (21) is provided with a latch (24). The other side of the lower cover (22) is rotatably provided with a buckle (25). The buckle (25) is connected to the lower cover (22) by several springs (26). The latch (24) and the buckle (25) are adapted to each other.

7. The optical device testing fixture according to claim 6, characterized in that: The lower end face of the upper cover (21) is provided with several elastic pressure bars (27) and several inclined pressure blocks (28). The positioning block (3) is provided with several inclined surfaces (29). The elastic pressure bars (27) press on the vehicle body (9), and the inclined pressure blocks (28) press on the inclined surfaces (29).

8. The optical device testing fixture according to claim 6, characterized in that: The main body (9) of the vehicle is provided with a plurality of second positioning holes (30), and the upper end face of the lower cover (22) is provided with a plurality of second positioning pins (31), which are adapted to the second positioning holes (30).

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