CN201145818Y - A camera test fixture - Google Patents

Abstract

The utility model relates to a test fixture for a camera, which comprises a base plate provided with a test circuit board, a positioning structure and a pressing structure arranged on the base plate and positioning the camera to be tested, and the pressing structure includes A bracket positioned above the bottom plate, a cylinder fixed on the bracket and having a cylinder rod, connected to the cylinder rod and capable of reciprocating sliding under the drive of the cylinder to compress the camera to be tested and the test circuit board pressure head. With the above-mentioned structure, the camera to be tested and the test circuit board are pressed tightly by the cylinder driving the pressure head, that is, the manual operation is replaced by the pneumatic method, which greatly improves the test efficiency of the camera module and improves the test stability. Worker fatigue.

Description

A camera test fixture

technical field

The utility model relates to a test fixture for a camera, in particular to a test fixture for testing a camera of a mobile phone.

Background technique

Nowadays, mobile phones have become an important communication tool in people's lives. The mobile phones on the market are not only based on communication, but also involve a wide range of functions. Among them, the effect of taking pictures of mobile phones is one of the important factors to measure the performance of a mobile phone, and the quality of taking pictures directly affects consumers' willingness to purchase. Therefore, the industry needs to conduct various tests on the mobile phone camera in the production process to ensure that it has a good photo effect.

For various tests of mobile phone cameras, the quality of test focus directly affects the sharpness of the camera, and the sharpness of the camera has a greater impact on the quality of the camera. For this reason, the industry continues to test the focusing process of the camera Improve the fixture to improve the accuracy and efficiency of the test.

At present, the commonly used jigs for camera testing focusing process are to manually press the flexible circuit board (Flexible Printed Circuit, FPC for short) of the camera to make it contact with the test circuit board and then test. The specific process is: the operator holds the Camera, contact the gold finger on the camera FPC with the copper foil on the test circuit board; at the same time, manually move the indenter of the fixture to press the FPC, so that the gold finger on the FPC is in contact with the copper foil on the test circuit board; then, Open the test program to test and adjust the focus, and then manually remove the indenter of the fixture after the test. This camera test method has the following disadvantages: 1. Manually press and hold the indenter button of the fixture for testing. It is difficult to make the gold finger on the FPC contact the copper foil on the test circuit board. Sometimes it needs to be pressed several times before testing. , often causing misjudgment of the camera; 2. Through manual operation, the stability of the test is not high, the production efficiency is low, which directly affects the product yield and increases the fatigue of the workers; 3. This test fixture can only test one 4. Due to manual operation, it is difficult to accurately control the force of the indenter of the fixture on the test circuit board, thus easily causing damage to the fixture and the test circuit board, affecting the test effect. Will increase the frequency and time of fixture repairs.

Utility model content

The purpose of the utility model is to provide a camera test fixture which can improve test efficiency and have high test stability.

The utility model is achieved in this way, a test fixture for a camera, which includes a base plate provided with a test circuit board, a positioning structure and a pressing structure that is arranged on the base plate and positions the camera to be tested, the The pressing structure includes a bracket positioned above the bottom plate, a cylinder fixed on the bracket and having a cylinder rod, connected to the cylinder rod and capable of reciprocating sliding under the drive of the cylinder to connect the camera to be tested with the test circuit Plate pressing head.

Compared with the prior art, the camera test fixture of the utility model compresses the camera to be tested and the test circuit board by means of a cylinder-driven pressure head, that is, replaces the manual operation with a pneumatic method, and greatly improves the test efficiency of the camera module , improve the test stability, but also reduce the operator fatigue.

Description of drawings

FIG. 1 is a schematic perspective view of a camera test fixture according to an embodiment of the present invention.

Figure 2 is a front view of the embodiment shown in Figure 1 .

Fig. 3 is a side view of the embodiment shown in Fig. 1 .

FIG. 4 is a top view of the illustrated embodiment of FIG. 1 .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

1 to 4 show a camera test fixture according to an embodiment of the present invention. The camera test fixture includes a base plate 200 , a positioning structure 300 and a pressing structure 400 disposed on the base plate 200 . Wherein, the bottom plate 200 is mainly used to carry the positioning structure 300, the pressing structure 400 and two test circuit boards for testing, that is, the first circuit board 500 and the second circuit board 600, and the two ends of the first circuit board 500 They are respectively connected to the second circuit board 600 and the positioning structure 300 . The positioning structure 300 is mainly used for positioning the camera to be tested (not shown in the figure). The pressing structure 400 can press the FPC of the camera to be tested on the positioning structure 300 to the first circuit board 500, and make the golden finger on the FPC contact with the copper foil on the first circuit board 500, so that the camera carry out testing. The specific structure of each component of the camera test fixture will be further described below.

The base plate 200 is a rectangular parallelepiped structure, and its front end part (as shown in the position of the base plate 200 in FIG. 1 ) is provided with four slide grooves 220 extending along the width direction of the base plate 200. These slide grooves 220 are in two rows on the base plate 200. Two-column distribution. Four parallel long slots 240 are provided on the rear end portion of the base plate 200 (the position of the base plate 200 in FIG. 1 ), and these long slots 240 extend along the length direction of the base plate 200 . The above-mentioned second circuit board 600 is fixed on the base plate 200 through the cooperation of the fasteners 620 with the long slots 240 . When it is necessary to replace the second circuit board 600 of different types to adapt to different types of cameras to be tested, only need to adjust the fitting positions between the fasteners 620 and these long grooves 240 to replace the second circuit board 600 of different models. It is fixed on the bottom plate 200, so that the camera test fixture has certain versatility.

The positioning structure 300 includes a limiting plate 320 , two inner core mold positioning pieces 340 , and two slider seats 360 . Wherein, the limiting plate 320 is disposed at the front end of the plate 200 , and four corners thereof are respectively provided with a guide rod 322 . The guide rods 322 are correspondingly provided in the sliding slots 220 on the bottom plate 200 and can slide in the corresponding sliding slots 220 . In this way, the limiting plate 320 can slide relative to the bottom plate 200 along the width direction of the bottom plate 200 , that is, the first direction.

The inner core mold positioning member 340 is disposed on the limiting plate 320 and located at two opposite ends of the limiting plate 320 . Each inner core mold positioning member 340 has a guide groove 342 , and the limiting plate 320 is provided with a guide post 324 matching with the guide groove 342 . In this way, the inner core mold positioning member 340 can slide relative to the limiting plate 320 along the length direction of the bottom plate 200 , that is, the second direction. In other words, the inner core mold positioning member 340 can slide relative to the bottom plate 200 along with the limiting plate 320 along the first direction, and can also slide relative to the bottom plate 200 and the limiting plate 320 along the second direction.

The inner core mold positioning part 340 is provided with a module positioning part 346, and the module positioning part 346 is provided with a positioning slot 348 for accommodating a camera to be tested. By sliding the inner core mold positioning member 340 along the first direction and the second direction, the position of the module positioning member 346 on the bottom plate 200 can be adjusted so as to adapt to different types of cameras to be tested.

The two slider seats 360 are arranged at intervals on the left and right sides of the middle part of the bottom plate 200 and are adjacent to the inner core mold positioning member 340 . The two slider seats 360 have an “L” shape, and each has a boss 362 inwardly, and the bosses 362 are mainly used to support and fix the first circuit board 500 . Each sliding block seat 360 is provided with a slide slot 364 extending along the width direction of the base plate 200 . The base plate 200 is provided with a guide bar 260 cooperating with the chute 364 on the slider seat 360, so that the two slider seats 360 can slide along the width direction of the base plate 200 to adapt to different models of the first circuit board 500, thereby Adapt to different models of cameras to be tested. In this way, the camera test fixture has better versatility.

The pressing structure 400 includes a bracket 420 , a cylinder 440 , a pressure head 460 , a decompression plate 480 and two buffers 490 . Wherein, the bracket 420 includes two support bases 422 respectively fixed on the left and right sides of the bottom plate 200, a support plate 424 fixed on the top of the support base 422 and a fixed bracket 426 fixed on the support plate 424. The cylinder 440 is fixed by the fixed bracket 426. on the support plate 424 . The pressure head 460 is fixed on the cylinder rod of the cylinder 440 through a connecting piece 470 , and the decompression plate 480 is also fixed on the cylinder rod and located above the pressure head 460 . The outer dimensions of the decompression plate 480 are larger than those of the pressure head 460 .

The buffers 490 are disposed on the left and right sides of the bottom plate 200 , respectively located on two outer sides of the pressure head 460 and opposite to the decompression plate 480 . Each buffer 490 includes a contact portion 492 and a limit seat 494, and the contact portion 492 is provided with threads, and the contact portion 492 is screwed into or out of the limit seat 494 by the threads on it, and can be screwed by adjusting the contact portion 492. The force between the contact portion 492 and the decompression plate 480 can be adjusted according to the depth in the limit seat 494 , so as to buffer and decompress the pressure of the cylinder 440 .

The above is the specific structure of the camera test fixture of the present invention, and the following is a brief description of the working process of the camera test fixture:

1. Confirm that the test equipment is connected normally, and turn on the power switch of the light box, and set the lumens (illumination unit) according to the process requirements;

2. Select the corresponding first circuit board 500, second circuit board 600 and module positioning part 346 according to the product model of the camera to be tested, and adjust the size: adjust the matching position between the fastener 620 and the long slot 240 , to fix the selected second circuit board 600 on the base plate 200, and adjust the distance between the slider holders 360 to fix the selected first circuit board 500 and connect the first circuit board 500 to the second circuit board 600 ; At the same time, the module positioning part 346 is in a suitable position through the sliding of the limiting plate 320 and the inner core mold positioning part 340;

3. Turn on the monitor and host, and select the corresponding test program;

4. Put the camera to be tested into the positioning groove 348 on the module positioning part 346, control the cylinder 440 to slide the indenter 460 downward, and make the gold finger on the FPC and the copper foil on the first circuit board 500 tightly contact; in the process of sliding down of the pressure head 460, the buffer 490 interacts with the decompression plate 480 so as to buffer and decompress the pressure of the cylinder 440; The damage of the fixture and the test circuit board reduces the maintenance frequency, saves the time for changing the fixture, and has high stability during the test;

5. Click the program with the mouse to start the test focus, observe the monitor screen to judge whether the product is qualified, and classify the good and bad products in turn.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A test fixture for a camera, comprising a base plate provided with a test circuit board, characterized in that, the test fixture also includes a positioning structure and a pressing structure that is located on the base plate and positions the camera to be tested , the pressing structure includes a bracket located above the bottom plate, a cylinder fixed on the bracket and having a cylinder rod, connected to the cylinder rod and can slide back and forth under the drive of the cylinder to place the camera to be tested An indenter that fits tightly against the test board. 2. The test fixture for a camera according to claim 1, wherein the pressing structure further comprises a pressure relief plate connected to the cylinder rod and at least one buffer capable of contacting the pressure relief plate ; The buffer is arranged on the bottom plate and is opposite to the decompression plate. 3. The test fixture for a camera according to claim 2, wherein the pressing structure has two buffers, and the two buffers are located on the bottom plate corresponding to the two outer sides of the indenter . 4. The test fixture for a camera according to claim 2 or 3, wherein the buffer includes a contact portion that can be in contact with the decompression plate and a limit seat fixed on the bottom plate, the There are threads on the contact portion, and the contact portion is screwed into or out of the limiting seat through the threads on the contact portion. 5. The test fixture for the camera according to claim 1, wherein the bracket comprises two support seats respectively fixed on both sides of the bottom plate, a support plate fixed on the top of the support seat, and a support plate fixed on the A fixed bracket on the support plate, the cylinder is fixed on the support plate through the fixed bracket. 6. The test fixture for a camera according to claim 1, wherein the positioning structure comprises a limit plate arranged on the bottom plate and capable of sliding relative to the bottom plate along the first direction, two spaced apart An inner core mold locating piece that is on the limiting plate and can slide in the second direction relative to the limiting plate, and a module locating piece that is arranged on the two upper inner core mold locating pieces, the module The positioning member is equipped with a positioning groove for accommodating the camera to be tested. 7. The test fixture for the camera according to claim 6, wherein the positioning structure further comprises two slider seats arranged at intervals on both sides of the bottom plate for fixing the test circuit board. 8. The test fixture for the camera according to claim 7, characterized in that at least one guide rod is provided on the bottom plate, and at least one slider seat is provided with a sleeve on the guide rod and can be opposite to each other. The chute through which the guide rod slides. 9. The test fixture for a camera according to claim 6, wherein the first direction is perpendicular to the second direction. 10. The test fixture of the camera according to claim 1, wherein the bottom plate is provided with a plurality of long slots, and the test fixture also includes a test fixture which passes through the test circuit board and is fixed in the long slots. of fasteners.

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