Novel camera module VCM grounding impedance test fixture structure

Abstract

The utility model discloses a novel camera module VCM grounding impedance test tool structure comprising a main body, the main body is provided with a plurality of VCM probe contact points used for contacting a camera module, and the bottom of the main body is provided with a conductive copper foil; a positioning plate is arranged above the main body, a fixing plate is arranged above the positioning plate, a plurality of adjustable fixing blocks are arranged on the periphery of the fixing plate, the positioning plate is arranged above the main body, and the positioning plate has the function of providing accurate position guide of the module and ensuring that the camera module is located at the optimal test position on the jig. A fixing plate is installed above the positioning plate, the fixing plate surrounds the periphery of the main body, a plurality of fixing blocks are installed on the periphery of the fixing plate, the fixing blocks can be adjusted according to the sizes and specifications of different modules, the retracting and unfolding functions are achieved, and the installation requirements of various modules are flexibly met.

Description

Technical Field

[0001] The utility model belongs to the field of test fixtures, and specifically relates to a novel camera module VCM ground impedance test fixture structure. Background Art

[0002] In current module manufacturing, especially when it comes to VCM components, ground impedance testing relies heavily on manual sampling testing. While this method can assess product quality to a certain extent, it has significant limitations due to its incomplete coverage. This limitation is significantly amplified during large-scale production, posing a significant challenge to module quality control. Oversights at any stage can become quality risks in mass production, especially when it comes to the critical performance indicator of ground impedance.

[0003] Furthermore, using a fixture to test modules after conductive copper foil is a common practice in the industry. However, this process frequently results in residual glue, posing a direct threat to test accuracy and reliability. Glue residue not only affects the contact stability between the module and the test platform but can also introduce additional impedance or conductivity issues, leading to biased test results. Such bias can be mistaken for a problem with the module itself, compromising the assessment of its true performance.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a novel camera module VCM ground impedance test fixture structure, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] The utility model provides a novel camera module VCM ground impedance test fixture structure, it includes: the main part is provided with a plurality of probe contact points for contacting camera module VCM on the main part, and the probe contact points are contacted with the module to carry out ground impedance test, the bottom of the main part is equipped with conductive copper foil, and the conductive copper foil is used to provide stable current loop and ensure electrical connection during the test, the upper portion of the main part is equipped with the positioning plate for accurately positioning the position of camera module, the positioning plate is installed with the fixed plate on the upper portion, and the fixed plate is used to stabilize the position of camera module and prevent the module from moving during the test, the periphery of the fixed plate is equipped with a plurality of adjustable fixing blocks, and the fixing blocks can be adjusted according to different sizes of module to ensure fastening, the inner side of the fixed plate is equipped with the lens protection groove for protecting camera lens to avoid mechanical damage to the lens during the test, and the bottom of the lens protection groove is installed with the limiting plate for limiting the installation depth of the module and ensuring that it is tested in the correct position.

[0008] Preferably, the lens protection groove and the limiting plate are both made of soft rubber material: this design makes the lens part better protected when the camera module is tested. Soft rubber material has strong buffering performance, which can effectively reduce lens damage caused by external force or collision during the test. Soft rubber material can also adapt to lenses of different sizes and shapes, further improving the flexibility of protection and prolonging the service life of the module.

[0009] Preferably, the entire fixed plate is made of magnet: by using a fixed plate made of magnet, the fixture can provide better adsorption force when installing the camera module, ensuring that the module remains stable during the test and is not easily displaced. The adsorption performance of the magnet makes the fixture more stable and reliable during operation, effectively reducing test errors caused by module sliding or vibration and improving overall test precision and efficiency.

[0010] Preferably, the fixing blocks can be retracted into the fixed plate: this design allows the fixing blocks to be adjusted flexibly according to the size of the module. When the fixing blocks are not needed, they can be retracted into the fixed plate, reducing space occupation and enhancing the adaptability of the fixture. This allows the fixture to adapt to camera modules of various sizes and types, increasing the versatility and application range of the equipment.

[0011] Preferably, the conductive copper foil is in a T-shaped structure: the T-shaped design of the conductive copper foil helps to save materials while providing good directional guidance. When installing the module, the T-shaped structure allows the operator to quickly and accurately determine the direction of the module, avoiding poor contact or test errors caused by incorrect direction. This design not only improves the efficiency of the test process but also significantly reduces the cost of materials used.

[0012] Preferably, the conductive copper foil is isolated from the jig to prevent electrical interference or glue residue from direct contact between the conductive copper foil and the jig body. This technique maintains jig cleanliness, reduces signal interference caused by poor contact between the conductive material, and ensures a pure conductive path, further improving test accuracy.

[0013] Preferably, the VCM probe contact point universal PCB is connected to the dedicated test box, and the design of the VCM probe contact point is connected to the universal PCB board and the dedicated test box, ensuring stable signal transmission during the test process.

[0014] The novel camera module VCM ground impedance test fixture structure uses a specific lighting and voltage measurement method to obtain resistance values. The fixture measures ground impedance values ​​by applying a specific voltage to the module's VCM. This lighting and voltage measurement method is simple to operate and can quickly obtain resistance values, ensuring the efficiency and accuracy of the test process.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0016] This utility model features a positioning plate mounted above the main body. This plate provides precise module positioning guidance, ensuring the camera module is positioned optimally on the fixture for testing. A fixing plate is mounted above the positioning plate, surrounding the main body. Multiple fixing blocks are mounted around the plate. These blocks can be adjusted to suit the size and specifications of different modules, offering retractable and expandable functions to flexibly accommodate various module installation requirements. This design not only enhances the fixture's versatility but also ensures the module remains securely fixed during testing, preventing measurement errors caused by module movement.

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] In the picture:

[0020] Figure 1 This is a schematic structural diagram of the utility model.

[0021] Figure 2 This is a disassembly diagram of the structure of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Main body; 2. VCM probe contact point; 3. Positioning plate; 4. Fixing plate; 5. Lens protection groove; 6. Conductive copper foil; 7. Fixing block; 8. Limiting plate.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] See also Figure 1-2 As shown in the figure, this embodiment provides a novel camera module VCM ground impedance test fixture structure. Through rational design, this structure enables efficient and accurate testing of the camera module's ground impedance. While ensuring test accuracy, it also fully considers the durability and convenience of the device. The fixture includes a main body 1, on which are mounted multiple VCM probe contact points 2, ensuring good contact with the module under test, thereby enabling high-precision data acquisition.

[0027] Conductive copper foil 6 is installed at the bottom of the main body 1. Its T-shaped structure effectively reduces material waste and provides precise orientation for the module, making it easier for operators to distinguish directions and avoid errors during testing. A positioning plate 3 and a fixing plate 4 are installed above the main body 1. Fixing plate 4 is surrounded by multiple fixing blocks 7. These retractable fixing blocks 7 make the fixture more flexible in adapting to different carriers and can meet the testing needs of various camera modules.

[0028] The fixing plate 4 is made of magnetic material, which can generate good adsorption force when it is started, so that the module remains stable during the test and prevents displacement. This design reduces the problem of poor contact or data inaccuracy caused by module movement.

[0029] The multiple fixing blocks 7 arranged around the fixing plate 4 have a retractable design to ensure that the fixture can adapt to different carriers or camera modules of different specifications during the test process, increasing the versatility of the equipment. The fixing blocks 7 can be adjusted according to the size of the module to ensure that the module is firmly positioned.

[0030] The fixing plate 4 is made of magnets, which provide better adsorption when the fixture is activated, ensuring the module's stable position during testing and preventing poor contact or data inaccuracy caused by movement during testing. A lens protection groove 5 is installed on the inner side of the fixing plate 4. Both the lens protection groove 5 and the limit plate 8 are made of soft rubber. This soft material effectively protects the camera lens, preventing damage during testing and thus extending the module's service life.

[0031] Conductive copper foil 6 doesn't come into direct contact with the fixture. This design prevents direct contact between the conductive copper foil 6 and the fixture surface, thus avoiding glue residue on the module and ensuring the cleanliness and reusability of the test fixture. VCM probe contact point 2 connects to the universal PCB and dedicated test box, providing more accurate data during testing.

[0032] The new camera module VCM ground impedance test fixture uses a method of measuring voltage at a given lighting level to obtain resistance values. This test method is not only simple and easy to use, but also fully compatible with existing production test boxes, allowing seamless integration into current production processes, further improving test efficiency and reliability.

[0033] Specifically, during the test, the fixture applies a given voltage to the module's VCM resistance. VCM probe contact point 2 collects the module's voltage signal and transmits it to a dedicated test box for analysis and processing, ultimately generating accurate ground impedance data.

[0034] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A new camera module VCM ground impedance test fixture structure, characterized by: include: A main body (1) is provided with a plurality of VCM probe contact points (2) for contacting a camera module, and a conductive copper foil (6) is provided at the bottom of the main body (1); a positioning plate (3) is provided above the main body (1), a fixing plate (4) is installed above the positioning plate (3), a plurality of adjustable fixing blocks (7) are provided around the fixing plate (4), a lens protection groove (5) for protecting a camera lens is provided on the inner side of the fixing plate (4), and a limiting plate (8) is installed at the bottom of the lens protection groove (5).

2. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The lens protection groove (5) and the limiting plate (8) are both made of soft rubber material.

3. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The entire fixed plate (4) is a whole magnetic plate structure.

4. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The fixing block (7) can be retracted into the fixing plate (4).

5. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The conductive copper foil (6) is in a T-shaped structure as a whole.

6. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The conductive copper foil (6) is not in direct contact with the jig.

7. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The VCM probe contact point (2) is connected to the universal PCB and the dedicated test box.

8. The novel camera module VCM ground impedance test fixture structure according to claim 1 is characterized in that: The novel camera module VCM ground impedance test fixture structure adopts a given lighting and voltage measurement method to obtain the resistance value.

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