FPC (Flexible Printed Circuit) electrical testing jig

Abstract

The utility model discloses an FPC (Flexible Printed Circuit) electrical testing jig which comprises a base, an electrical testing microneedle integrated board, an upper cover plate, a servo mechanism and a driving test module, a plurality of jig supporting columns are arranged on the base, the electric micrometer microneedle integrated plate and the upper cover plate are sequentially arranged on the jig supporting columns in a sleeving mode, and the servo mechanism is placed on the base; a positioning piece is arranged above the upper cover plate and is used for positioning and mounting the FPC, meanwhile, a first micro-needle through hole is formed in the upper cover plate, and a micro-needle on the electric measurement micro-needle integrated plate extends out of the first micro-needle through hole; the number of the driving test modules is at least one, the driving test modules are arranged in the first through grooves, conductive silica gel is arranged on the driving test modules, and meanwhile the driving test modules are connected with the servo mechanism and move up and down under the action of the servo mechanism, so that the conductive silica gel moves upwards to be electrically connected with the FPC above the upper cover plate. According to the utility model, the jig structure is optimized, so that accurate positioning and efficient and stable operation of the FPC in the electrical measurement process are improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing and intelligent manufacturing technology, specifically to an FPC electrical testing fixture. Background Technology

[0002] Flexible printed circuit boards (FPCs) are highly reliable and extremely flexible printed circuits made from polyester film or polyimide as the substrate. By embedding circuit designs onto a thin, flexible plastic sheet, a large number of precision components can be packed into a narrow and limited space, thus forming a flexible circuit. With the trend towards thinner and smaller electronic products, FPCs have become widely used in smartphones, tablets, wearable devices, and other electronic products due to their advantages such as flexible and foldable circuits, light weight, small size, good heat dissipation, and easy installation, which overcome the limitations of traditional interconnect technologies.

[0003] However, during the electrical testing of FPCs, due to the material's inherent softness and low mechanical strength, achieving precise positioning, preventing deviation, and improving production efficiency have become the focus of industry attention. Utility Model Content

[0004] The purpose of this utility model is to provide an FPC electrical testing fixture that improves the accuracy of FPC positioning and the efficiency and stability of its operation during electrical testing by optimizing the fixture structure. To achieve the above objective, this utility model adopts the following technical solution:

[0005] This utility model discloses an FPC electrical testing fixture, including: a base, an electrical testing micro-needle integrated board, an upper cover plate, a servo mechanism, and a drive testing module.

[0006] The base is provided with several fixture support columns, the electrical measuring microneedle integrated plate and the upper cover plate are sequentially mounted on the fixture support columns, and the servo mechanism is placed on the base.

[0007] The upper cover plate is provided with a positioning element for positioning and installing the FPC. At the same time, the upper cover plate is provided with a first micro-needle through hole and a first through groove. The micro-needles on the electrical measurement micro-needle integrated plate extend out from the first micro-needle through hole.

[0008] At least one drive test module is provided, and the drive test module is located in the first through slot. The drive test module is provided with conductive silicone. The drive test module is connected to a servo mechanism and moves up and down under the action of the servo mechanism, so that the conductive silicone moves upward and connects with the FPC above the upper cover plate.

[0009] Furthermore, the FPC electrical testing fixture further includes at least one electrical testing microneedle fixing plate, which is fitted between the upper cover plate and the electrical testing microneedle integrated plate, and the electrical testing microneedle fixing plate is provided with a second microneedle through hole to fix the microneedles on the electrical testing microneedle integrated plate.

[0010] Furthermore, an adhesive sponge layer is provided between the electrical microneedle fixing plate and the electrical microneedle integrated plate.

[0011] Preferably, the thickness of the adhesive sponge layer is 0.5-2mm.

[0012] Furthermore, the positioning element is a positioning pin, and the upper cover plate is also provided with a plurality of first positioning pin holes, which correspond to the FPC and fix the FPC to the upper cover plate by means of the positioning pin.

[0013] Furthermore, a pad is adhered to the upper cover plate. The pad is provided with a third micro-needle through hole corresponding to the first micro-needle through hole and a second positioning pin hole corresponding to the first positioning pin hole. The pad is also provided with a second through groove corresponding to the first through groove.

[0014] Preferably, the conductive silicone is arc-shaped.

[0015] Furthermore, a microneedle magnetic chuck is provided on the top of the electrical measurement microneedle integrated plate, and the microneedle magnetic chuck is provided with several through holes; the interior of the electrical measurement microneedle integrated plate is provided with several through slots corresponding to the through holes, and a microneedle spring is provided inside the through slot; the electrical measurement microneedle passes through the through hole on the microneedle magnetic chuck and connects to the top of the microneedle spring.

[0016] The other end of the microneedle spring is connected to an external testing machine via a test data line, and the test data line is integrated via an external horn connector.

[0017] Furthermore, the microneedle spring disconnects from the test data line under the magnetic attraction of the microneedle magnetic chuck; after the FPC is placed, the electrical testing microneedle connects to the FPC and is pressed downwards, and the microneedle spring reconnects to the test data line after being subjected to downward pressure.

[0018] After adopting the above technical solution, the present invention has the following effects:

[0019] 1. This utility model achieves precise positioning of FPC during electrical testing by optimizing the fixture structure, reducing offset and error, thereby improving production efficiency and ease of operation.

[0020] 2. This utility model has high structural testing stability. By controlling the test module with a cylinder, it can stably lift the conductive silicone, ensuring accuracy and stability during the testing process, and improving testing efficiency and production capacity.

[0021] 3. This utility model is made of high-performance materials, which is highly durable and reduces replacement and maintenance costs. In addition, the structure of this utility model is simple, and the later debugging and maintenance are relatively easy, which further reduces production costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a front view of the present invention.

[0024] Figure 3 This is a top view of the top cover plate of this utility model.

[0025] Figure 4 This is a top view of the electrical measurement microneedle integrated board of this utility model.

[0026] Figure 5 This is a top view of the electrical measuring microneedle fixing plate of this utility model.

[0027] Figure 6 This is a top view of the pad of this utility model.

[0028] Figure 7 This is a schematic diagram showing the connection between the electrical measuring microneedle and the electrical measuring microneedle integrated plate of this utility model.

[0029] Figure 8 for Figure 7 Enlarged view of point A.

[0030] Main component symbols:

[0031] 1: Top cover plate; 11: First microneedle through hole; 12: First through groove; 13: First positioning pin hole; 2: Electrical testing microneedle integrated board; 21: Electrical testing microneedle; 22: Microneedle magnetic chuck; 23: Through groove; 24: Microneedle spring; 3: Drive test module; 31: Conductive silicone; 4: Base; 41: Fixture support column; 5: Servo mechanism; 6: Electrical testing microneedle fixing plate; 61: Second microneedle through hole; 7: Pad plate; 71: Third microneedle through hole; 72: Second through groove; 73: Second positioning pin hole; 8: Adhesive sponge layer; 9: Test data cable. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] like Figure 1and Figure 2 As shown, this utility model discloses an FPC electrical testing fixture, including: a base 4, an electrical testing micro-needle integrated board 2, an upper cover plate 1, a servo mechanism 5, and a drive testing module 3.

[0034] The base 4 is provided with several fixture support columns 41, the electrical measuring micro needle integrated board 2 and the upper cover plate 1 are sequentially mounted on the fixture support columns 41, and the servo mechanism 5 is placed on the base 4.

[0035] Combination Figure 3 and Figure 4 As shown, a positioning element is provided above the upper cover plate 1 for mounting the FPC. The upper cover plate 1 also has a first micro-needle through-hole 11 and a first through-slot 12. Microneedles 21 on the electrical testing micro-needle integrated board 2 extend from the first micro-needle through-hole 11. In this embodiment, the positioning element is a positioning pin (not shown in the figure), and the upper cover plate 1 also has several first positioning pin holes 13, which correspond to the FPC. The upper cover plate 1 fixes the FPC to the FPC using the positioning pins.

[0036] At least one drive test module 3 is provided, and the drive test module 3 is disposed within the first through slot 12. Conductive silicone 31 is disposed on the drive test module 3. The drive test module 3 is connected to the servo mechanism 5 and moves up and down under the action of the servo mechanism 5, causing the conductive silicone 31 to move upwards and electrically connect with the FPC above the upper cover plate. The shape and number of conductive silicone 31 are adapted to the contact points of the FPC. In this embodiment, the conductive silicone 31 is arc-shaped and the servo mechanism 5 is a small cylinder.

[0037] Combination Figure 5 As shown, in this embodiment, the FPC electrical testing fixture further includes two electrical testing microneedle fixing plates 6, which are fitted between the upper cover plate 1 and the electrical testing microneedle integrated plate 2. The electrical testing microneedle fixing plate 6 is provided with a second microneedle through hole 61 to fix the microneedles 21 on the electrical testing microneedle integrated plate 2.

[0038] Secondly, a 1mm thick adhesive sponge layer 8 is provided between the electrical microneedle fixing plate 6 and the electrical microneedle integrated plate 2. In other embodiments, the thickness of the adhesive sponge layer 8 can also be 0.5mm or 2mm.

[0039] Again, such as Figure 6 As shown, in this embodiment, in order to protect the surface of the FPC board from being scratched at the connection between the upper cover plate 1 and the fixture support column 41, a pad 7 is adhered to the upper cover plate 1. The pad 7 is provided with a third micro-needle through hole 71 corresponding to the first micro-needle through hole 11 and a second positioning pin hole 73 corresponding to the first positioning pin hole 13, and the pad 7 is also provided with a second through groove 72 corresponding to the first through groove 12.

[0040] In addition, such as Figure 7 and Figure 8 As shown, in this embodiment, a microneedle magnetic chuck 23 is provided on the top of the electrical measurement microneedle integrated plate 2, and several through holes (not shown in the figure) are provided on the microneedle magnetic chuck 23. Several through slots 24 corresponding to the through holes are provided inside the electrical measurement microneedle integrated plate 2, and microneedle springs 25 are provided inside the through slots 24. The electrical measurement microneedle 21 passes through the through holes on the microneedle magnetic chuck 23 and connects to the top of the microneedle spring 25.

[0041] Furthermore, the other end of the microneedle spring 25 is connected to an external testing machine via a test data line 9, and the test data line 9 is integrated via an external connector. The microneedle spring 25 is disconnected from the test data line 9 under the magnetic attraction of the microneedle magnetic chuck 23; after the FPC is placed, the electrical testing microneedle 21 connects to the FPC and is pressed downwards, and the microneedle spring 25 reconnects to the test data line 9 after being subjected to downward pressure.

[0042] The operating principle of this utility model is as follows: First, the FPC to be tested is placed on the upper cover plate 1 and fixed to the upper cover plate 1 by positioning pins. The electrical testing micro-needle 21 is connected to the FPC. Then, the test is started, and the test module 3 moves upward under the control of the servo mechanism 5. The conductive silicone 31 on the test module 3 connects to the contact point of the FPC, and the test data is transmitted to the external test machine through the test data line to obtain the test data. After the test is completed, the test module 3 moves downward under the control of the servo mechanism 5, and the operator removes the positioning pins, takes out the FPC, and completes the operation.

[0043] The above description is only a preferred embodiment of the present utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An FPC electrical measurement jig, characterized by, The utility model relates to a kind of electric micro-needle integrated board test device, including: Base (4), electric micro-needle integrated board (2), upper cover plate (1), servo mechanism (5) and drive test module (3); A plurality of jig support columns (41) are provided on the base (4), and the electric micro-needle integrated board (2) and the upper cover plate (1) are sequentially sleeved on the jig support columns (41), and the servo mechanism (5) is placed on the base (4); A positioning member is provided above the upper cover plate (1) for positioning and installing the FPC, and the upper cover plate (1) is provided with a first microneedle through hole (11) and a first through slot (12), and the microneedles (21) on the electric micro-needle integrated board (2) extend from the first microneedle through hole (11); The drive test module (3) is provided at least one, and the drive test module (3) is arranged in the first through slot (12), and the drive test module (3) is provided with conductive silica gel (31), and the drive test module (3) is connected with the servo mechanism (5), and realizes up and down movement under the action of the servo mechanism (5), so that the conductive silica gel (31) moves upward and is electrically connected with the FPC above the upper cover plate (1).

2. The FPC electrical measurement fixture of claim 1, wherein: Further comprising: At least one electric micro-needle fixing plate (6) is provided, and the electric micro-needle fixing plate (6) is sleeved between the upper cover plate (1) and the electric micro-needle integrated board (2), and the electric micro-needle fixing plate (6) is provided with a second microneedle through hole (61) to fix the microneedles (21) on the electric micro-needle integrated board (2).

3. The FPC electrical measurement fixture of claim 2, wherein: A sponge layer (8) is provided between the electric micro-needle fixing plate (6) and the electric micro-needle integrated board (2).

4. The FPC electrical measurement fixture of claim 3, wherein: The thickness of the sponge layer (8) is 0.5-2mm.

5. The FPC electrical measurement fixture of claim 1, wherein: The positioning member is a positioning pin, and a plurality of first positioning pin holes (13) are further provided on the upper cover plate (1), the first positioning pin holes (13) correspond to the FPC, and the FPC is fixed on the upper cover plate (1) by the positioning pin.

6. The FPC electrical measurement fixture of claim 5, wherein: A backing plate (7) is bonded to the upper cover plate (1), the backing plate (7) is provided with a third microneedle through hole (71) corresponding to the first microneedle through hole (11) and a second positioning pin hole (73) corresponding to the first positioning pin hole (13), and the backing plate (7) is further provided with a second through slot (72) corresponding to the first through slot (12).

7. The FPC electrical measurement fixture of claim 1, wherein: The conductive silica gel (31) is in the shape of a circular arc.

8. The FPC electrical measurement fixture of claim 1, wherein: A microneedle magnetic chuck (23) is provided on the top of the electric micro-needle integrated board (2), and a plurality of through holes are provided on the microneedle magnetic chuck (23); A plurality of through slots (24) corresponding to the through holes are provided inside the electric micro-needle integrated board (2), and a microneedle spring (25) is provided inside the through slots (24), the electric micro-needle (21) passes through the through holes on the microneedle magnetic chuck (23) and is connected to the top end of the microneedle spring (25).

9. The FPC electrical measurement fixture of claim 8, wherein: The other end of the microneedle spring (25) is connected to an external test machine through a test data line (9), and the test data line (9) is integrated through an external horn.

10. The FPC electrical measurement fixture of claim 9, wherein: The microneedle spring (25) is disconnected from the test data line (9) under the action of the magnetic attraction of the microneedle magnetic suction disc (23); after placing the FPC, the electric test microneedle (21) is connected with the FPC and is extruded downward, and the microneedle spring (25) is reconnected with the test data line (9) after being subjected to downward pressure.

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