Static pressure jig of optical fingerprint module

Abstract

The utility model discloses a kind of static pressure jigs of optical fingerprint module, it is related to the field of fingerprint module production, optical fingerprint module has protruding lens and the positioning column located in the side edge of lens, static pressure jig includes push rod and push head, one end of push head is equipped with threaded rod, the other end of push head is equipped with avoid slot, avoid slot is matched with lens, one end of push rod is equipped with threaded hole, threaded rod is connected with threaded hole by screw thread;The utility model is by the threaded rod of push head and push rod screw connection, to facilitate the static pressure of push head, to be able to different static pressure test to product, when setting multiple push head, it can be simultaneously carried out different static pressure static pressure test to different products according to the adjustment of push head, and avoid slot is set on push head, avoid slot can avoid lens on optical fingerprint module, satisfy the static pressure test of fingerprint identification module.

Description

Technical Field

[0001] This utility model relates to the field of fingerprint module manufacturing technology, and in particular to a static pressure fixture for an optical fingerprint module. Background Technology

[0002] As optical fingerprint technology matures and fingerprint recognition applications expand, static pressure testing is necessary to eliminate potential risks associated with fingerprint recognition modules. Static pressure testing is a crucial component of fingerprint module mechanical reliability testing. Its primary purpose is to simulate various static compression scenarios that a product may encounter throughout its lifecycle. This testing ensures that the fingerprint module maintains its appearance, structural integrity, and electrical connections under static pressure loads of specified size, orientation, and duration. Crucially, it guarantees that the fingerprint recognition function (collection quality and recognition rate) remains unaffected or is only affected within acceptable limits. This is a key indicator for measuring the mechanical reliability and durability of a fingerprint module.

[0003] Chinese patent application CN202222811252.5 discloses a static pressure tester with a convenient test head replacement, comprising an instrument assembly, a support assembly, a power assembly, and a test assembly. The instrument assembly includes a test platform with an operation panel and a display screen connected to its front. The support assembly includes two side plate columns of the same size, with column slots at their adjacent ends. The power assembly includes a top plate and a moving crossbeam. A threaded column is located below the top plate, and a clearance sleeve is connected to the upper end of the moving crossbeam. A motor is located inside the top plate. The test assembly includes a connecting column and a test base plate. A stabilizing block is connected to the top of the connecting column, and a connecting sleeve is connected to the outer ring of the connecting column away from the stabilizing block. A test head is connected to the lower surface of the connecting sleeve, and an inner groove is formed inside the connecting sleeve. An inner hole is formed inside the connecting column, and a bolt is connected to the inner side of the inner hole. In this solution, when the test head needs to be replaced, the bolts used to fix the test head are first gradually loosened and removed. Then, the two bolts are pulled out, and the connecting sleeve is smoothly removed from the outer ring of the connecting column to remove the test head. Then, the other connecting sleeve is smoothly put on the outer ring of the connecting column, and then the connecting sleeve and the connecting column are fixed in a cross shape with two bolts, thus realizing the convenient replacement of the static pressure tester test head.

[0004] While existing static pressure testers facilitate the replacement of static pressure test heads, adjusting the descent height of the top plate driven by the screw column is cumbersome and makes pressure control difficult when performing static pressure tests on products. Furthermore, when testing fingerprint recognition modules, the lens area must be avoided to prevent damage from static pressure. Existing static pressure test heads are insufficient for testing fingerprint recognition modules. Therefore, this invention discloses a static pressure fixture for optical fingerprint modules to solve these problems. Utility Model Content

[0005] Based on this, it is necessary to provide a static pressure fixture for an optical fingerprint module to address the aforementioned technical problems. By connecting the threaded rod of the pusher head to the push rod threadedly, the static pressure of the pusher head can be easily adjusted, thereby enabling different static pressure tests to be performed on the product. Furthermore, when multiple pushers are set, different static pressure tests can be performed on different products simultaneously according to the adjustment of the pusher head. An avoidance groove is set on the pusher head to avoid the lens on the optical fingerprint module, thus satisfying the static pressure test of the fingerprint recognition module.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A hydrostatic fixture for an optical fingerprint module, the optical fingerprint module having a protruding lens and a positioning post located on the side of the lens, the hydrostatic fixture including a push rod and a push head, one end of the push head having a threaded rod, the other end of the push head having an avoidance groove, the avoidance groove matching the lens, one end of the push rod having a threaded hole, the threaded rod being threadedly connected to the threaded hole.

[0007] As a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, the side wall of the pusher is provided with a positioning groove that matches the positioning post.

[0008] As a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, it also includes a test platform, on which a stand is fixed, a placement plate is fixed, a lifting plate is slidably connected inside the stand, and the push rod is connected to the lifting plate.

[0009] In a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, the lifting plate is provided with a mounting head, and the end face of the push rod away from the push head is provided with a mounting groove, which matches the mounting head.

[0010] In a preferred embodiment of the hydrostatic fixture for the optical fingerprint module provided by this utility model, a magnet is embedded in the mounting groove, and the mounting head is made of a metal material that can be magnetically attracted to the magnet.

[0011] In a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, the side wall of the mounting groove is provided with a groove, and the mounting head is provided with a positioning protrusion that matches the groove.

[0012] In a preferred embodiment of the hydrostatic fixture for the optical fingerprint module provided by this utility model, the placement plate is provided with a placement groove, and the planar contour of the placement groove is consistent with that of the optical fingerprint module.

[0013] As a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, the mounting head is provided in multiple and arranged in a matrix, and the placement slot is also provided in multiple and corresponds one-to-one with the mounting head.

[0014] In a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, a lead screw is movably connected to the lifting plate, the lead screw is threadedly connected to the upright frame, and a rotating handle is provided at the end of the lead screw away from the lifting plate.

[0015] As a preferred embodiment of the static pressure fixture for the optical fingerprint module provided by this utility model, the lifting plate is provided with limiting blocks on both sides, the upright is provided with limiting grooves, and the limiting blocks are slidably connected to the limiting grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The static pressure fixture for the optical fingerprint module provided by this utility model facilitates the adjustment of the static pressure of the pusher by connecting the threaded rod of the pusher head to the push rod threadedly, thereby enabling different static pressure tests on the product. At the same time, when multiple pushers are set, different static pressure tests can be performed on different products simultaneously according to the adjustment of the pusher head. An avoidance groove is set on the pusher head to avoid the lens on the optical fingerprint module, thus satisfying the static pressure test of the fingerprint recognition module. Attached Figure Description

[0017] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the push rod and push head structure in the static pressure fixture for the optical fingerprint module provided by this utility model; Figure 2 An exploded view of the push rod and push head in the hydrostatic fixture for the optical fingerprint module provided by this utility model; Figure 3A schematic diagram of the optical fingerprint module structure in the hydrostatic fixture for the optical fingerprint module provided by this utility model; Figure 4 A three-dimensional schematic diagram of the overall structure of the static pressure fixture for the optical fingerprint module provided by this utility model; Figure 5 A schematic diagram showing the connection between the lifting plate and the push rod in the static pressure fixture for the optical fingerprint module provided by this utility model; Figure 6 A schematic diagram of the push rod structure in the static pressure fixture for the optical fingerprint module provided by this utility model.

[0019] The markings in the diagram are explained as follows: 1. Optical fingerprint module; 2. Lens; 3. Positioning post; 4. Push rod; 5. Push head; 6. Threaded rod; 7. Avoidance groove; 8. Threaded hole; 9. Positioning groove; 10. Test platform; 11. Stand; 12. Placement plate; 13. Lifting plate; 14. Lead screw; 15. Rotating handle; 16. Limiting block; 17. Limiting slide groove; 18. Mounting head; 19. Mounting groove; 20. Magnet; 21. Groove; 22. Positioning protrusion; 23. Placement groove. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] As described in the background section, while existing static pressure testers facilitate the replacement of static pressure test heads, adjusting the descent height of the top plate driven by the screw column is necessary when performing different static pressure tests on products. This adjustment method is cumbersome and pressure control is difficult. Furthermore, when performing pressure tests on fingerprint recognition modules, it is necessary to avoid the lens area of ​​the fingerprint recognition module to prevent static pressure from damaging the fingerprint recognition module. Existing static pressure test heads are insufficient to meet the static pressure testing requirements of fingerprint recognition modules.

[0022] To solve this technical problem, this utility model provides a hydrostatic fixture for optical fingerprint modules, which is applied in the field of fingerprint module production.

[0023] For details, please refer to Figure 1-3The optical fingerprint module 1 has a protruding lens 2 and a positioning post 3 located on the side of the lens 2. The static pressure fixture includes a push rod 4 and a push head 5. One end of the push head 5 is provided with a threaded rod 6, and the other end of the push head 5 is provided with a clearance groove 7. The clearance groove 7 matches the lens 2. One end of the push rod 4 is provided with a threaded hole 8, and the threaded rod 6 is threadedly connected to the threaded hole 8.

[0024] The static pressure fixture for the optical fingerprint module 1 provided by this utility model facilitates the adjustment of the static pressure of the push head 5 by connecting the threaded rod 6 of the push head 5 to the push rod 4, thereby enabling different static pressure tests on the product. When multiple push heads 5 are set, different static pressure tests can be performed on different products simultaneously according to the adjustment of the push head 5. An avoidance groove 7 is set on the push head 5 to avoid the lens 2 on the optical fingerprint module 1, thus satisfying the static pressure test of the fingerprint recognition module.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1 Please refer to Figure 1-3 A static pressure fixture for an optical fingerprint module is provided. The optical fingerprint module 1 has a protruding lens 2 and two positioning posts 3 located on the side of the lens 2. The static pressure fixture includes a push rod 4 and a push head 5. One end of the push head 5 is provided with a threaded rod 6, and the other end of the push head 5 is provided with a clearance groove 7. The clearance groove 7 matches the lens 2. When the push head 5 applies static pressure to the optical fingerprint module 1, the clearance groove 7 can avoid the lens 2 part, avoid the lens 2 from being stressed, and make the holder step surface of the optical fingerprint module 1 be stressed. One end of the push rod 4 is provided with a threaded hole 8, and the threaded rod 6 is threadedly connected to the threaded hole 8, so that the length of the push head 5 relative to the push rod 4 can be adjusted independently.

[0029] Furthermore, two positioning grooves 9 that match the positioning pins 3 are provided on the side wall of the push head 5. On the one hand, they can avoid the positioning pins 3, and on the other hand, they can position the downward pressing position of the push head 5.

[0030] like Figure 4 , 5As shown, a stand 11 is fixed on the test platform 10, and a placement plate 12 is fixed on the top surface of the test platform 10 by bolts. The placement plate 12 is used to place the optical fingerprint module 1 to be tested or other electrical devices that require static pressure testing. A lifting plate 13 is slidably connected inside the stand 11. The lifting plate 13 is connected to the push rod 4. By moving the lifting plate 13 toward the test platform 10, the push rod 4 is pressed down, so that the push head 5 connected to the lower end of the push rod 4 performs static pressure testing on the optical fingerprint module 1.

[0031] Furthermore, a lead screw 14 is movably connected to the lifting plate 13. The lower end of the lead screw 14 is rotatably connected to the lifting plate 13 through a bushing. The lead screw 14 is threadedly connected to the upright frame 11. A rotating handle 15 is provided at the end of the lead screw 14 away from the lifting plate 13. By manually rotating the rotating handle 15, the lead screw 14 is rotated, and the lead screw 14 drives the lifting plate 13 to move up and down. At the same time, limit blocks 16 are provided on both sides of the lifting plate 13, and a limit groove 17 is provided on the upright frame 11. The limit blocks 16 are slidably connected to the limit groove 17 to ensure the stability of the lifting plate 13 when it is raised and lowered.

[0032] Example 2 The hydrostatic fixture for the optical fingerprint module provided in Embodiment 1 is further optimized, specifically, as follows: Figure 5 , 6 As shown, the lifting plate 13 is provided with a mounting head 18, and the end face of the push rod 4 away from the push head 5 is provided with a mounting groove 19. The mounting groove 19 matches the mounting head 18, and a magnet 20 is embedded in the mounting groove 19. The magnet 20 is a strong magnet. In this example, the magnet 20 is arc-shaped and embedded and fixed in the side wall of the mounting groove 19. The mounting head 18 is made of a metal material that can magnetically attract the magnet 20. When installing the push rod 4, the mounting head 18 is directly inserted into the mounting groove 19, which is convenient for installation and easy for disassembly. At the same time, a groove 21 is provided on the side wall of the mounting groove 19, and a positioning protrusion 22 that matches the groove 21 is provided on the mounting head 18. When installing the push rod 4, the positioning protrusion 22 is inserted into the groove 21, which can position the push rod 4 in the circumference and ensure that the avoidance groove 7 on the push head 5 can match the lens 2 on the optical fingerprint module 1.

[0033] Example 3 The hydrostatic fixture for the optical fingerprint module provided in Embodiment 2 is further optimized, specifically, as follows: Figure 4As shown, the placement plate 12 is provided with a placement slot 23. The planar contour of the placement slot 23 is consistent with that of the optical fingerprint module 1. Of course, the contour of the placement slot 23 can be modified accordingly for different products under test. The placement slot 23 is used to position the product to be tested for static pressure. Multiple mounting heads 18 are provided and distributed in a matrix. Multiple placement slots 23 are also provided and correspond one-to-one with the mounting heads 18, so that multiple push rods 4 can be installed on each lifting plate 13. Different products under test are placed in the multiple placement slots 23 respectively. When different static pressure tests are required for different products under test, the position of the push head 5 relative to the push rod 4 can be adjusted so that the push head 5 connected to the push rod 4 under the same lifting plate 13 can perform different static pressure tests on multiple products under test at the same time, thereby improving the efficiency of static pressure testing.

[0034] The working principle of the static pressure fixture for the optical fingerprint module 1 provided by this utility model is as follows: The optical fingerprint module 1 to be tested is placed in the positioning groove 9 to position the optical fingerprint module 1. Then, the position of the push head 5 relative to the push rod 4 is adjusted according to the static pressure required by the optical fingerprint module 1. Then, the lead screw 14 is rotated to drive the lifting plate 13 to descend. The push head 5 on the push rod 4 connected to the lifting plate 13 presses down on the optical fingerprint module 1 to be tested, thereby realizing batch static pressure testing of the optical fingerprint module 1. It can perform static pressure testing of different products at the same time. An avoidance groove 7 is set on the push head 5. The avoidance groove 7 can avoid the lens 2 on the optical fingerprint module 1, thus satisfying the static pressure testing of the fingerprint recognition module.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A hydrostatic fixture for an optical fingerprint module, the optical fingerprint module having a protruding lens and a positioning post located on the side of the lens, characterized in that, The hydrostatic fixture includes a push rod and a push head. One end of the push head is provided with a threaded rod, and the other end of the push head is provided with a clearance groove. The clearance groove matches the lens. One end of the push rod is provided with a threaded hole, and the threaded rod is threadedly connected to the threaded hole.

2. The hydrostatic fixture for an optical fingerprint module according to claim 1, characterized in that, The side wall of the pusher is provided with a positioning groove that matches the positioning post.

3. The hydrostatic fixture for an optical fingerprint module according to claim 1, characterized in that, It also includes a test platform, on which a stand is fixed, a placement plate is fixed, a lifting plate is slidably connected inside the stand, and a push rod is connected to the lifting plate.

4. The hydrostatic fixture for an optical fingerprint module according to claim 3, characterized in that, The lifting plate is provided with a mounting head, and the end face of the push rod away from the push head is provided with a mounting groove, which matches the mounting head.

5. The hydrostatic fixture for an optical fingerprint module according to claim 4, characterized in that, A magnet is embedded in the mounting slot, and the mounting head is made of a metal material that can be magnetically attracted to the magnet.

6. The hydrostatic fixture for an optical fingerprint module according to claim 5, characterized in that, The side wall of the mounting groove is provided with a groove, and the mounting head is provided with a positioning protrusion that matches the groove.

7. The hydrostatic fixture for an optical fingerprint module according to claim 4, characterized in that, The placement plate is provided with a placement slot, and the planar outline of the placement slot is consistent with that of the optical fingerprint module.

8. The hydrostatic fixture for an optical fingerprint module according to claim 7, characterized in that, The mounting heads are provided in multiple ways and arranged in a matrix, and the placement slots are also provided in multiple ways and correspond one-to-one with the mounting heads.

9. The hydrostatic fixture for an optical fingerprint module according to claim 3, characterized in that, A lead screw is movably connected to the lifting plate. The lead screw is threadedly connected to the upright frame, and a rotating handle is provided at the end of the lead screw away from the lifting plate.

10. The hydrostatic fixture for an optical fingerprint module according to claim 9, characterized in that, Limiting blocks are provided on both sides of the lifting plate, and limiting grooves are provided on the upright frame. The limiting blocks are slidably connected to the limiting grooves.

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