Double-locked microneedle test fixture

Abstract

The utility model belongs to test fixture technical field especially relates to a double locking's microneedle test fixture. Including lower mould subassembly, the test site for placing the product to be measured is opened in lower mould subassembly, and at least one group of clamping blocks are symmetrically arranged in the both sides of lower mould subassembly, the upper mould subassembly for pressing together to the upside of lower mould subassembly, at least one group of buckle assembly are symmetrically arranged in the both sides of upper mould subassembly, and the buckle assembly is clamped to clamping block and makes upper mould subassembly and lower mould subassembly relative fixation, and the elastic sheet microneedle module is equipped in upper mould subassembly, and the elastic sheet microneedle of elastic sheet microneedle module is used to downwardly abut the product to be measured, a plurality of hand screws are arranged on upper mould subassembly, and hand screw is connected to lower mould subassembly through upper mould subassembly. The utility model discloses a buckle assembly and hand screw's double locking structure, realize upper mould subassembly and lower mould subassembly's quick locking and reinforcing locking, ensure that the elastic sheet microneedle and the product to be measured keep contact pressure stable between, have the advantages such as high test precision, good reliability, convenient operation.

Description

Technical Field

[0001] This utility model belongs to the field of testing fixture technology, and in particular relates to a double-locking microneedle testing fixture. Background Technology

[0002] In modern electronics manufacturing, circuit boards are core components of various electronic devices, making quality inspection during their production crucial. Especially for circuit boards with connectors of various specifications, functional and performance testing via connector interfaces is an efficient and common method. Microneedle test fixtures, with their high-density contact and precise positioning characteristics, have become key tools for such testing.

[0003] However, as electronic products continue to evolve towards miniaturization and high integration, the size of connectors used on circuit boards is also becoming increasingly miniaturized. This trend presents significant challenges to traditional micro-needle test fixtures. For micro-connectors with small size and narrow pin pitch, ensuring the formation and maintenance of stable, uniform, and moderately pressured contact between the spring-loaded micro-needles and the connector contacts during testing becomes exceptionally difficult. Traditional fixture closure methods, especially those relying on simple manual pressing of the upper mold assembly by the operator and fixing it with simple locating pins or guide posts, often fail to provide sufficiently accurate alignment and continuous, balanced locking force. This instability can lead to minute relative displacements or vibrations between the upper and lower mold assemblies during testing, or uneven contact pressure in different areas. The consequence is unstable contact resistance, or even poor contact or momentary disconnection. This not only introduces testing errors and misjudgments, but in severe cases, it can also damage the delicate connector terminals or the micro-needles of the fixture itself during frequent test cycles.

[0004] Therefore, there is an urgent need for a microneedle test fixture that can achieve a stable connection with the product under test. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a dual-locking microneedle testing fixture. Through the dual-locking structure of the snap-fit ​​assembly and the hand-tightening screw, the upper mold assembly and the lower mold assembly can be quickly and securely locked, ensuring that the spring-loaded microneedle and the contact point of the product under test maintain precise alignment and stable contact pressure during the testing process. It has the advantages of high testing accuracy, good reliability, and convenient and efficient operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual-locking microneedle testing fixture, comprising:

[0008] The lower mold assembly has a test position for placing the product to be tested, and at least one set of locking blocks are symmetrically arranged on both sides of the lower mold assembly;

[0009] An upper mold assembly is used to press onto the lower mold assembly. At least one set of snap-fit ​​assemblies is symmetrically provided on both sides of the upper mold assembly. The snap-fit ​​assemblies are engaged with the snap-fit ​​block to fix the upper mold assembly and the lower mold assembly relative to each other. A spring-loaded micro-needle module is provided inside the upper mold assembly. The spring-loaded micro-needles of the spring-loaded micro-needle module are used to abut downward against the product to be tested.

[0010] A plurality of hand-tightening screws are provided on the upper mold assembly, and the hand-tightening screws pass through the upper mold assembly and connect to the lower mold assembly.

[0011] Furthermore, the latching assembly includes a return spring, and the latching assembly engages with the latching block under the elastic force of the return spring.

[0012] Furthermore, the buckle assembly includes a buckle fixing block fixed to the side of the upper mold assembly and a buckle rotatably disposed on the buckle fixing block via a pin, and the reset spring is connected to the buckle.

[0013] Furthermore, the buckle includes a buckle end and a side pressure end, the buckle fixing block is provided with a baffle, the reset spring is disposed between the baffle and the side pressure end, and the buckle end is used to engage with the buckle block.

[0014] Furthermore, the latch block is provided with a first inclined surface, and the latch end is provided with a second inclined surface that cooperates with the first inclined surface.

[0015] Furthermore, the upper mold assembly includes an upper mold wireless plate, an upper needle plate, and an upper carrier plate arranged from top to bottom. The upper carrier plate is provided with a module slot, and the spring-loaded micro needle module is installed in the module slot and is located between the upper needle plate and the upper carrier plate.

[0016] Furthermore, the spring-loaded microneedle module includes a needle mold fixing block installed in the module slot, and a floating plate located below the needle mold fixing block that can float relative to the needle mold fixing block. The spring-loaded microneedle is located in the needle mold fixing block and passes through the floating plate.

[0017] Furthermore, a height-equalizing screw is fixed between the needle die fixing block and the floating plate, the height-equalizing screw being used to limit the floating amplitude of the floating plate, and a floating spring is provided between the needle die fixing block and the floating plate.

[0018] Furthermore, the needle mold fixing block is provided with a microneedle cover plate for fixing the spring microneedle within the needle mold fixing block.

[0019] Furthermore, the upper mold assembly is provided with two sets of snap-fit ​​components, and the upper mold assembly is provided with three spring-loaded micro-needle modules.

[0020] The beneficial effects of this utility model are:

[0021] This invention achieves double locking and fixing of the upper and lower mold components by setting a symmetrical locking structure of the locking blocks and buckle components, supplemented by a hand-tightening screw connection. A return spring is installed in the buckle component, allowing it to automatically and reliably engage with the locking block under spring force. A first inclined surface on the locking block and a matching second inclined surface on the buckle end guide the buckle end to slide smoothly into and engage with the locking block when the upper mold component is pressed down. A floating plate is installed below the needle mold fixing block to achieve adaptive floating connection with the product under test. This invention, through the double locking structure of the locking components and hand-tightening screws, enables rapid and reinforced locking of the upper and lower mold components, ensuring precise alignment and stable contact pressure between the spring-loaded microneedle and the contact point of the product under test during testing. It boasts advantages such as high testing accuracy, high reliability, and convenient and efficient operation. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of the structure of the microneedle testing fixture of this utility model;

[0023] Appendix Figure 2 This is an exploded structural diagram of the microneedle testing fixture of this utility model;

[0024] Appendix Figure 3 This is an exploded structural diagram of the buckle assembly of this utility model;

[0025] Appendix Figure 4 This is an exploded structural diagram of the upper mold assembly of this utility model;

[0026] Appendix Figure 5 This is an exploded structural diagram of the spring-loaded microneedle module of this utility model;

[0027] The diagram shows the following components: 1-Lower mold assembly, 110-Test position, 120-Clip block, 121-First inclined surface, 130-Positioning hole; 2-Upper mold assembly, 210-Upper mold wireless plate, 220-Upper needle plate, 230-Upper carrying plate, 231-Module slot, 240-Positioning post; 3-Snap-on assembly, 310-Reset spring, 320-Snap-on fixing block, 321-Baffle, 330-Pin, 340-Snap-on, 341-Snap-on end, 3411-Second inclined surface, 342-Side pressure end; 4-Spring microneedle module, 410-Spring microneedle, 420-Needle mold fixing block, 430-Floating plate, 440-Equal height screw, 450-Floating spring, 460-Microneedle cover plate; 5-Hand-tightening screw; 6-Product to be tested. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the embodiments of 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 or an electrical connection; 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] See appendix Figure 1 To be continued Figure 5 The figure shows a specific embodiment of the dual-locking microneedle testing fixture provided by this utility model.

[0033] See appendix Figure 1 The dual-locking microneedle testing fixture includes:

[0034] The lower mold assembly 1 has a test position 110 for placing the product to be tested 6, and at least one set of locking blocks 120 are symmetrically arranged on both sides of the lower mold assembly 1.

[0035] The upper mold assembly 2 is used to press onto the lower mold assembly 1. At least one set of snap fasteners 3 are symmetrically provided on both sides of the upper mold assembly 2. The snap fasteners 3 are engaged with the snap block 120 to fix the upper mold assembly 2 and the lower mold assembly 1 relative to each other. The upper mold assembly 2 is provided with a spring-loaded micro-needle module 4. The spring-loaded micro-needle 410 of the spring-loaded micro-needle module 4 is used to press down on the test product 6.

[0036] Multiple hand-tightening screws 5 are provided on the upper mold assembly 2, and the hand-tightening screws 5 pass through the upper mold assembly 2 and are connected to the lower mold assembly 1.

[0037] See appendix Figure 2 In the above embodiment, during testing, the product under test 6 is first placed on the test position 110 of the lower mold assembly 1. Then, the upper mold assembly 2 is placed above the lower mold assembly 1 and pressed downwards. The snap-fit ​​assembly 3 is used to snap onto the snap block 120 of the lower mold assembly 1 to fix the upper mold assembly 2 and the lower mold assembly 1. Then, the hand-tightened screw 5 is tightened from the upper mold assembly 2 to achieve double locking with the lower mold assembly 1. At this time, the product under test 6 is closed and fixed between the upper mold assembly 2 and the lower mold assembly 1, so that the spring-loaded micro-needle 410 and the product under test 6 have a more stable and reliable contact, effectively preventing displacement or vibration during the test and improving the stability and accuracy of the test. In this embodiment, the upper mold assembly 2 is provided with two sets of snap-fit ​​assemblies 3, and the upper mold assembly 2 is provided with three spring-loaded micro-needle modules 4, so as to realize the simultaneous testing of the connectors of multiple products under test 6. In this embodiment, six hand-tightened screws 5 are provided to fasten the upper mold assembly 2 and the lower mold assembly 1, so that the locking of the entire fixture is more stable. By employing two sets of latching components 3, during testing, the tester can use both hands to pinch different latching components 3 to unlock or lock them. In this embodiment, the lower end of the upper mold component 2 is provided with several positioning posts 240, and the upper end of the lower mold component 1 is provided with several positioning holes 130. The upper mold component 2 and the lower mold component 1 are positioned and guided by the positioning posts 240 and the positioning holes 130 during the pressing process.

[0038] See appendix Figure 2 and attached Figure 3 In the above embodiment, the latching assembly 3 includes a return spring 310, and the latching assembly 3 engages with the latching block 120 under the elastic force of the return spring 310. In this embodiment, the return spring 310 enables the latching assembly 3 to automatically and reliably engage with the latching block 120 under the elastic force of the return spring 310, facilitating the quick completion of the initial locking operation of the fixture and improving operational convenience.

[0039] See appendix Figure 3In the above embodiment, the latching assembly 3 includes a latching fixing block 320 fixed to the side of the upper mold assembly 2 and a latch 340 rotatably disposed on the latching fixing block 320 via a pin 330. A return spring 310 is connected to the latch 340. Specifically, the latch 340 includes a latching end 341 and a side pressing end 342. A baffle 321 is provided on the latching fixing block 320, and the return spring 310 is disposed between the baffle 321 and the side pressing end 342. The latching end 341 is used to engage with the latching block 120. In this embodiment, the lever-type operation of the latch 340 allows the tester to effectively pry the latching end 341 off the latching block 120 by applying lateral force to the side pressing end 342. In this embodiment, there are two sets of four latching assemblies 3. The tester can use the thumbs and forefingers of both hands to pinch the side pressing end 342 of one set of latching assemblies 3 respectively to achieve quick unlocking.

[0040] See appendix Figure 2 and attached Figure 3 In the above embodiment, the locking block 120 is provided with a first inclined surface 121, and the latching end 341 is provided with a second inclined surface 3411 that cooperates with the first inclined surface 121. In this embodiment, by providing a first inclined surface 121 on the locking block 120 and a second inclined surface 3411 that cooperates with the latching end 341, when the upper mold assembly 2 is pressed down, the cooperation of the first inclined surface 121 and the second inclined surface 3411 can guide the latching end 341 to slide smoothly into and engage with the locking block 120, making the engagement process smoother and less labor-intensive, and facilitating automatic alignment and reducing hard collisions.

[0041] See appendix Figure 4 In the above embodiment, the upper mold assembly 2 includes an upper mold wireless plate 210, an upper needle plate 220, and an upper carrier plate 230 arranged from top to bottom. The upper carrier plate 230 is provided with a module slot 231, and the spring-loaded micro-needle module 4 is installed in the module slot 231 and is located between the upper needle plate 220 and the upper carrier plate 230. In this embodiment, the spring-loaded micro-needle module 4 is detachably installed in the module slot 231, adopting a modular structure, which is beneficial for installation and maintenance, and facilitates the replacement of different spring-loaded micro-needle modules 4 according to the product under test 6, thereby improving the versatility and maintenance convenience of the fixture.

[0042] See appendix Figure 5In the above embodiment, the spring-loaded microneedle module 4 includes a needle mold fixing block 420 installed in the module slot 231, and a floating plate 430 disposed below the needle mold fixing block 420 and capable of floating relative to the needle mold fixing block 420. The spring-loaded microneedle 410 is disposed in the needle mold fixing block 420 and passes through the floating plate 430. In the embodiment, when the floating plate 430 is in a state away from the needle mold fixing block 420, the spring-loaded microneedle 410 is hidden in the floating plate 430. During the process of pressing the upper mold assembly 2 down to install it onto the lower mold assembly 1, the floating plate 430 first contacts the connector of the product under test 6 placed on the lower mold assembly 1. As the upper mold assembly 2 is pressed down, the floating plate 430 gradually approaches the needle mold fixing block 420 and the spring-loaded microneedle 410 gradually protrudes from the floating plate 430 to abut against the connector of the product under test 6, realizing an adaptive floating connection with the product under test 6 and ensuring test stability.

[0043] See appendix Figure 5 In the above embodiment, a height-equalizing screw 440 is fixed between the needle mold fixing block 420 and the floating plate 430. The height-equalizing screw 440 is used to limit the floating amplitude of the floating plate 430. A floating spring 450 is provided between the needle mold fixing block 420 and the floating plate 430. A microneedle cover plate 460 is provided on the needle mold fixing block 420 for fixing the spring microneedle 410 inside the needle mold fixing block 420. In this embodiment, the cooperation of the height-equalizing screw 440 and the floating spring 450 provides a uniform and controllable elastic support force while limiting the floating amplitude of the floating plate 430, thereby making the floating action of the spring microneedle module 4 stable and reliable. This can both compensate for tolerances and ensure contact, and prevent over-travel damage to the microneedle or the product.

[0044] In summary, this embodiment provides a dual-locking microneedle testing fixture. By setting symmetrical locking blocks 120 and snap-fit ​​components 3, and supplementing with hand-tightening screws 5, dual locking and fixing of the upper mold assembly 2 and the lower mold assembly 1 is achieved. A return spring 310 is provided in the snap-fit ​​component 3, allowing the snap-fit ​​component 3 to automatically and reliably engage with the locking blocks 120 under the spring force. A first inclined surface 121 is provided on the locking block 120, and a second inclined surface 3411 is provided on the snap-fit ​​end 341 to cooperate with it, enabling the upper mold assembly 2 to be pressed down. When the inclined surface guides the buckle end 341 to slide smoothly into and engage with the buckle block 120; by setting a floating plate 430 below the needle mold fixing block 420, an adaptive floating connection with the product under test is achieved; in this embodiment, through the double locking structure of the buckle assembly 3 and the hand-tightening screw 5, the upper mold assembly 2 and the lower mold assembly 1 can be quickly locked and reinforced, ensuring that the spring micro needle 410 and the contact point of the product under test always maintain accurate alignment and stable contact pressure during the test, which has the advantages of high test accuracy, good reliability, convenient and efficient operation.

[0045] The embodiments described above are merely one of the preferred embodiments of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-locking microneedle testing fixture, characterized in that, include: The lower mold assembly (1) has a test position (110) for placing the product to be tested (6) and at least one set of card blocks (120) are symmetrically arranged on both sides of the lower mold assembly (1). The upper mold assembly (2) is used to press onto the lower mold assembly (1). At least one set of snap fasteners (3) are symmetrically provided on both sides of the upper mold assembly (2). The snap fasteners (3) are engaged with the snap block (120) to fix the upper mold assembly (2) and the lower mold assembly (1) relative to each other. The upper mold assembly (2) is provided with a spring-loaded micro-needle module (4). The spring-loaded micro-needle (410) of the spring-loaded micro-needle module (4) is used to abut the product to be tested (6) downwards. A plurality of hand-tightening screws (5) are provided on the upper mold assembly (2), and the hand-tightening screws (5) pass through the upper mold assembly (2) and are connected to the lower mold assembly (1).

2. The dual-locking microneedle testing fixture according to claim 1, characterized in that, The latching assembly (3) includes a return spring (310), and the latching assembly (3) is engaged with the latch block (120) under the elastic force of the return spring (310).

3. The dual-locking microneedle testing fixture according to claim 2, characterized in that, The buckle assembly (3) includes a buckle fixing block (320) fixed to the side of the upper mold assembly (2) and a buckle (340) rotatably disposed on the buckle fixing block (320) via a pin (330), and the reset spring (310) is connected to the buckle (340).

4. The microneedle testing fixture with double locking according to claim 3, characterized in that, The buckle (340) includes a buckle end (341) and a side pressure end (342). The buckle fixing block (320) is provided with a baffle (321). The reset spring (310) is located between the baffle (321) and the side pressure end (342). The buckle end (341) is used to engage with the buckle block (120).

5. A dual-locking microneedle testing fixture according to claim 4, characterized in that, The latch (120) is provided with a first inclined surface (121), and the latch end (341) is provided with a second inclined surface (3411) that cooperates with the first inclined surface (121).

6. A dual-locking microneedle testing fixture according to any one of claims 1-5, characterized in that, The upper mold assembly (2) includes an upper mold wireless plate (210), an upper needle plate (220) and an upper carrier plate (230) arranged from top to bottom. The upper carrier plate (230) is provided with a module slot (231). The spring-loaded micro needle module (4) is installed in the module slot (231) and is located between the upper needle plate (220) and the upper carrier plate (230).

7. A dual-locking microneedle testing fixture according to claim 6, characterized in that, The spring-loaded microneedle module (4) includes a needle mold fixing block (420) installed in the module slot (231) and a floating plate (430) located below the needle mold fixing block (420) and floating relative to the needle mold fixing block (420). The spring-loaded microneedle (410) is located in the needle mold fixing block (420) and passes through the floating plate (430).

8. A dual-locking microneedle testing fixture according to claim 7, characterized in that, A height equalizing screw (440) is fixed between the needle die fixing block (420) and the floating plate (430). The height equalizing screw (440) is used to limit the floating range of the floating plate (430). A floating spring (450) is provided between the needle die fixing block (420) and the floating plate (430).

9. A dual-locking microneedle testing fixture according to claim 7, characterized in that, The needle mold fixing block (420) is provided with a microneedle cover plate (460) for fixing the spring microneedle (410) inside the needle mold fixing block (420).

10. A dual-locking microneedle testing fixture according to claim 1, characterized in that, The upper mold assembly (2) is provided with two sets of buckle assemblies (3), and the upper mold assembly (2) is provided with three spring-loaded micro-needle modules (4).

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