Adaptive connector position deviation testing mechanism

Abstract

The utility model relates to the technical field of testing mechanisms for self-adaptive connector position deviation, and provides a testing mechanism for self-adaptive connector position deviation, which is high in testing efficiency and not easy to crush, and comprises a first needle die, a second needle die, a third needle die, a probe for testing a connector and a PCB (printed circuit board) positioned on one side of the third needle die back to the second needle die, the first pin die is connected with the second pin die, the third pin die is connected with the second pin die through a supporting column, the connecting end of a probe penetrates through the third pin die to be electrically connected with the PCB, a limiting groove is formed in the side, back on to the second pin die, of the first pin die, and a positioning block used for positioning an external FPCA connector and a limiting block used for preventing the positioning block from being separated from the limiting groove are arranged in the limiting groove. The limiting block is fixedly connected with the limiting groove, and a floating gap is formed between the positioning block and the limiting block.

Description

Technical Field

[0001] This utility model relates to the technical field of testing mechanisms for adaptive connector position deviation, specifically, to a testing mechanism for adaptive connector position deviation. Background Technology

[0002] With the widespread adoption of mobile electronic products and the arrival of the 5G era, electronic products such as mobile phones and wearable devices have increasingly higher requirements for their size and functionality. Flexible circuit boards (FPCAs), with their thin, light, and bendable characteristics, are widely used in various electronic devices. As a component for connection and control in electronic products, FPCAs face more diverse testing items, varied forms, increased testing difficulty, and increasingly stringent testing requirements.

[0003] However, due to the material and structural characteristics, FPC is prone to deformation during processing and soldering. Due to improper temperature control during the soldering process, limitations of solder paste performance, and unstable performance of the pick-and-place machine, the connector position is easily deviated, resulting in products with different shapes.

[0004] This deviation affects the positioning accuracy of the FPCA in the testing mechanism, making it impossible for the connector on the FPCA to accurately align with the connection structure in the testing mechanism during testing. It also easily causes damage such as crushing, ultimately leading to problems such as low testing efficiency and low test yield. Summary of the Invention

[0005] This invention proposes a test mechanism for adaptive connector position deviation, which has high testing efficiency and is less prone to crushing damage.

[0006] The technical solution of this utility model is as follows:

[0007] An adaptive connector position deviation testing mechanism includes a first pin mold, a second pin mold, a third pin mold, a probe for testing the connector, and a PCB located on the side of the third pin mold facing away from the second pin mold. The first pin mold is connected to the second pin mold, and the third pin mold is connected to the second pin mold via a support column. The connecting end of the probe passes through the third pin mold and is electrically connected to the PCB. A limiting groove is formed on the side of the first pin mold facing away from the second pin mold. The limiting groove is provided with a positioning block for positioning an external FPCA connector and a limiting block for preventing the positioning block from dislodging from the limiting groove. The limiting block is fixedly connected to the limiting groove, and a floating gap is provided between the positioning block and the limiting block.

[0008] Furthermore, the positioning block is provided with a connection slot for insertion into an external FPCA connector, and the test end of the probe extends through the first and second probe molds into the connection slot.

[0009] Further, the limiting block is fixed in the limiting groove, the positioning block is provided with a limiting protrusion on the side facing the second needle mold, a limiting hole is arranged on the limiting block, the limiting hole is sleeved on the positioning block, and the end of the limiting hole facing the second needle mold abuts against the side of the limiting protrusion away from the second needle mold.

[0010] Further, the limiting hole has a gap between the inner wall of the limiting hole and the outer wall of the positioning block, the projection surface of the limiting protrusion is in a rectangular structure, and the four corners are all rounded;

[0011] The cross section of the limiting hole is in a rectangular structure, and the four corners of the inner wall are all provided with arc-shaped grooves.

[0012] Further, the limiting groove is provided with a positioning pin, the positioning pin is embedded in the limiting block, and the limiting block is fixedly connected with the first needle mold through a fastener.

[0013] Further, the first needle mold and the second needle mold are provided with an elastic guide column one, and the elastic guide column one is fixed to the second needle mold.

[0014] Further, the positioning block and the limiting block are both made of Torlon material.

[0015] Further, an elastic guide column two and a fixing seat for fixing the elastic guide column two are arranged, and one end of the elastic guide column two is connected with the second needle mold.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model discloses a floating gap cooperation between the positioning block and the limiting block, offsets the position deviation of the connector on the FPCA, thereby guaranteeing that the connector on the FPCA is successfully butted with the positioning block and completes the test. ACCURATE DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in connection with the drawings and specific embodiments.

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the local schematic diagram of the utility model;

[0021] Figure 3 It is the explosion drawing of the utility model;

[0022] Figure 4 It is the expanded view of the utility model;

[0023] Figure 5 It is the local view of the first needle mold.

[0024] In the figure: 1, limit block; 101, limit hole; 111, arc-shaped groove; 2, positioning block; 21, limit protrusion; 22, connecting groove; 3, needle die one; 31, limit groove; 32, positioning pin; 4, needle die two; 5, fixed seat; 6, needle die three; 7, PCB; 8, equal-height bolt; 9, elastic guide column one; 10, support column; 11, elastic guide column two; 12, probe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0026] Example One

[0027] As Figures 1-5 shown, a test mechanism for self-adapting connector position deviation is usually installed on the production line equipment ceiling, and is connected with the connector on the FPCA on the lower machine table carrier plate or tooling fixture to be tested, and performs testing. The main structure includes needle die one 3, needle die two 4, needle die three 6, probe 12 for testing the connector, and PCB 7 located on the side of needle die three 6 away from needle die two 4, needle die one 3 is connected with needle die two 4, needle die three 6 is connected with needle die two 4 through support column 10, the connecting end of probe 12 penetrates needle die three 6 and is electrically connected with PCB 7, and test signals are transmitted to the equipment control system. The conventional installation mode of the embodiment is that needle die three 6 is arranged upward and needle die one 3 is arranged downward, and the actual production line design can also be adjusted.

[0028] In the embodiment, limit groove 31 is formed on the side of needle die one 3 away from needle die two 4, and positioning block 2 for positioning the external FPCA connector and limit block 1 for preventing positioning block 2 from separating from limit groove 31 are arranged in limit groove 31. Limit block 1 is fixed in limit groove 31 and is fixedly connected with limit groove 31. Since the positioning of the tooling fixture of the production line mainly refers to the FPCA main body structure position and is matched, such as clamping and fixing, the position of the connector relative to the FPCA may deviate due to various factors. Therefore, in order to test the FPCA with possible connector position deviation, a floating gap is arranged between positioning block 2 and limit block 1 in the embodiment, so that when contacting the connector, the position of positioning block 2 can be self-displaced relative to limit block 1 along with the connector with position deviation, thereby realizing self-adaptation.

[0029] Specifically, the embodiment sets a connecting groove 22 on the surface of the positioning block 2 for plugging with the external FPCA connector, and the test end of the probe 12 extends to the connecting groove 22 through the needle die one 3 and the needle die two 4, so that the connector on the FPCA can be plugged into the connecting groove 22 and then electrically connected with the probe 12 when the FPCA is tested, and the positioning of the connecting groove 22 ensures the accuracy of the connection between the connector and the probe 12.

[0030] Since the positioning block 2 needs to have a movable function, and at the same time needs to be limited to prevent it from falling off the needle die one 3, the embodiment sets a limiting protrusion 21 on the side of the positioning block 2 facing the needle die two 4. The limiting protrusion 21 can be integrally formed with the positioning block 2, and the size of the limiting protrusion 21 needs to be larger than that of the positioning block 2, that is, the side surface needs to extend out of the positioning block 2. At the same time, the embodiment sets a limiting hole 101 on the limiting block 1, and the limiting hole 101 is sleeved on the positioning block 2. The end of the limiting hole 101 facing the needle die two 4 abuts against the side of the limiting protrusion 21 away from the needle die two 4. When the embodiment is installed upside down on the production line ceiling, the end surface of the limiting hole 101 can support the limiting protrusion 21 and the positioning block 2, preventing the positioning block 2 from falling off.

[0031] Since there is a gap between the inner wall of the limiting hole 101 and the outer wall of the positioning block 2, the embodiment preferably designs the projection surface of the limiting protrusion 21 as a rectangular structure with rounded corners at four corners, reducing the resistance when the four corners contact the inner wall of the limiting hole 101 and improving the floating effect of the positioning block 2. The cross section of the limiting hole 101 is also designed as a rectangular structure, and the four corners of the inner wall of the limiting hole 101 are provided with arc-shaped grooves 111, so that the shape of the limiting hole 101 is adapted to the limiting protrusion 21, and the offset travel in each direction is consistent and controllable. The design of the arc-shaped grooves 111 avoids the limiting protrusion 21 being stuck at the four corners of the limiting hole 101.

[0032] In order to facilitate the installation of the limiting block 1, the embodiment sets a positioning pin 32 in the limiting groove 31 for assisting the positioning of the limiting block 1. The positioning pin 32 is embedded in the limiting block 1, and then the limiting block 1 is fixedly connected with the needle die one 3 through fasteners.

[0033] The positioning block 2 and the limiting block 1 in the embodiment are preferably made of Torlon material (high-performance polyamide resin), which has good mechanical properties and is stable and reliable, so that the positioning block 2 and the limiting block 1 not only have good machining precision, but also have a long service life.

[0034] Example Two

[0035] As Figures 1-4As shown in the above embodiment, the needle die one 3 and the needle die two 4 are floatingly matched. Specifically, four elastic guide columns one 9 are additionally arranged between the needle die one 3 and the needle die two 4, the elastic guide columns one 9 are fixed to the needle die two 4, and the elastic ends of the elastic guide columns one 9 are connected to the needle die one 3. Through the elastic guide columns one 9, the needle die one 3 can be elastically floated on the needle die two 4, the buffer when force is provided is provided, the stability of the connection between the needle die one 3 and the needle die two 4 is improved, the needle die one 3 and the needle die two 4 are connected through the equal-height bolts 8, and thus the maximum floating distance is controlled.

[0036] Example Three

[0037] As Figures 1-4 shown, on the basis of the above embodiment, four elastic guide columns two 11 and a fixing seat 5 for fixing the elastic guide columns two 11 are additionally arranged in the embodiment, the fixing seat 5 is fixed to the structure on the production line ceiling, and the elastic ends of the elastic guide columns two 11 are connected to the needle die two 4. The elastic guide columns two 11 and the fixing seat 5 form a two-stage buffer, the needle die one 3 and the needle die two 4 are completely attached, and multiple hard stops in the process of the ceiling movement are avoided.

[0038] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A test mechanism for adaptive connector position deviation, comprising a first pin mold (3), a second pin mold (4), a third pin mold (6), a probe (12) for testing the connector, and a PCB (7) located on the side of the third pin mold (6) facing away from the second pin mold (4), wherein the first pin mold (3) is connected to the second pin mold (4), the third pin mold (6) is connected to the second pin mold (4) via a support post (10), and the connecting end of the probe (12) passes through the third pin mold (6) and is electrically connected to the PCB (7), characterized in that, The first needle mold (3) has a limiting groove (31) on the side facing away from the second needle mold (4). The limiting groove (31) is provided with a positioning block (2) for positioning the external FPCA connector and a limiting block (1) for preventing the positioning block (2) from leaving the limiting groove (31). The limiting block (1) is fixedly connected to the limiting groove (31), and a floating gap is provided between the positioning block (2) and the limiting block (1).

2. The adaptive connector position deviation testing mechanism as described in claim 1, characterized in that, The positioning block (2) is provided with a connection slot (22) for insertion into an external FPCA connector. The test end of the probe (12) extends through the first needle mold (3) and the second needle mold (4) into the connection slot (22).

3. The test mechanism for adaptive connector position deviation as described in claim 1 or 2, characterized in that, The limiting block (1) is fixed in the limiting groove (31). The positioning block (2) has a limiting protrusion (21) on the side facing the needle mold (4). The limiting block (1) has a limiting hole (101). The limiting hole (101) is sleeved on the positioning block (2). The end of the limiting hole (101) facing the needle mold (4) abuts against the side of the limiting protrusion (21) facing away from the needle mold (4).

4. The adaptive connector position deviation testing mechanism as described in claim 3, characterized in that, There is a gap between the inner wall of the limiting hole (101) and the outer wall of the positioning block (2), and the projection surface of the limiting protrusion (21) is rectangular with rounded corners. The limiting hole (101) has a rectangular cross-section and arc-shaped grooves (111) are provided at the four corners of the inner wall.

5. The test mechanism for adaptive connector position deviation as described in claim 1 or 2, characterized in that, The limiting groove (31) is provided with a positioning pin (32), which is embedded in the limiting block (1). The limiting block (1) is fixedly connected to the needle mold (3) by fasteners.

6. The test mechanism for adaptive connector position deviation as described in claim 1 or 2, characterized in that, An elastic guide post 1 (9) is provided between the first needle mold (3) and the second needle mold (4), and the elastic guide post 1 (9) is fixed to the second needle mold (4).

7. The test mechanism for adaptive connector position deviation as described in claim 1 or 2, characterized in that, Both the positioning block (2) and the limiting block (1) are made of Torlon material.

8. The test mechanism for adaptive connector position deviation as described in claim 1 or 2, characterized in that, The device is provided with an elastic guide post 2 (11) and a fixing seat (5) for fixing the elastic guide post 2 (11). One end of the elastic guide post 2 (11) is connected to the needle mold 2 (4).

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