CN215871668U - Universal test fixture for camera module - Google Patents

Abstract

The utility model discloses a universal test fixture for a camera module, which comprises a PCB bottom plate, a fixture mounting base and a fixture mounting upper cover, and is characterized by further comprising a clamping device: the clamping device comprises at least two pairs of spring modules; the switching flexible flat cable assembly comprises a plurality of switching flexible flat cables, and the switching flexible flat cable assembly is connected with the PCB bottom plate and the lens module to be tested through corresponding connectors. The lens module to be tested is tightened by the spring modules, so that the lens module to be tested can be adapted to modules with various sizes, the universality is stronger, and the center of the lens module to be tested is fixed by tightening the two pairs of spring modules. In addition, the universal fixture can be realized by only replacing one switching flexible flat cable for the lens module to be tested with different connector specifications and electrical specifications by the scheme, the universality is greatly improved, and the cost is greatly reduced.

Description

Universal test fixture for camera module

Technical Field

The utility model relates to the technical field of camera testing, in particular to a novel camera module testing jig.

Background

The camera module needs to be tested on an upper computer after being assembled. In order to be able to perform the bench test, a test fixture needs to be designed. At present, the test fixture of camera module all is the special tool according to module size design, and the limitation is big, often leads to two modules can't share a tool because a size difference or specification are different. If the height is different, the connector specification is different, length is different etc. all need redesign tool, and the commonality is poor, and is with high costs.

A general camera module testing apparatus proposed in prior art 1 (publication No. CN 212379720U) adapts to modules of different sizes and specifications by adjusting a lens holder adjusting block and a press block adjusting block. The adjusting range of the scheme is limited, and when the size of the lens base on the tested camera module changes, the lens base positioning block needs to be replaced to meet the requirement, so that the camera module is not convenient enough. Secondly, the electric property of this scheme is linked still through the mode of needle file, so still need change the needle file of different specifications when the connector specification of module is different, still need change switching PCB when module electric specification is different, thereby this tool scheme just can't communicate the unable test of electric property for when the connector direction of module is for up, and the commonality is poor, and the cost of the gilt of the probe in the needle file is high. Finally, because the needle seat adopted by the proposal is communicated with the electrical property, and the needle seat can not be adjusted from left to right and up and down in the proposal, the jig can not be used when the length of the module body exceeds the groove designed by the jig base. Meanwhile, when the module connector has a left-right offset relative to the center of the head of the module, the base needs to be redesigned with a groove, and the universality is not high.

The prior art 2 (publication number CN 212519241U) provides a novel camera module testing jig, which adapts to modules of different sizes, but the design specification of the testing jig requires that the optical center of the module and the center specified by the testing jig are fixed again, and the device can only be tightened left and right, so that the center of the module is hardly ensured at the specified position when the module is placed on the module, thereby resulting in the failure of the test. And according to the design of the connector mounting groove of this scheme, this scheme can only satisfy the module that the connector faces upwards and test, and the commonality is not high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel camera module testing jig for solving the defects and shortcomings of the prior art. The utility model has high universality and greatly reduces the cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a general test fixture of camera module, includes PCB bottom plate, tool installation base and tool installation upper cover, the PCB bottom plate is fixed below the tool installation base, tool installation upper cover with tool installation base is articulated, and characterized by still includes clamping device: the clamping device comprises at least two pairs of spring modules and is arranged on the jig mounting base or the jig mounting upper cover; the switching flexible flat cable assembly comprises a plurality of switching flexible flat cables, and the switching flexible flat cable assembly is connected with the PCB bottom plate and the lens module to be tested through corresponding connectors. The lens module to be tested is tightened by the two pairs of spring modules, so that the lens module to be tested can be adapted to modules with various sizes, the universality is stronger, and the center of the lens module to be tested is fixed by tightening the two pairs of spring modules. In addition, the universal fixture can be realized by only replacing one switching flexible flat cable for the lens module to be tested with different connector specifications and electrical specifications by the scheme, the universality is greatly improved, and the cost is greatly reduced.

Preferably, the flexible flat cable assembly includes a first flexible flat cable and a second flexible flat cable.

Preferably, a socket of the connector a is welded on the PCB bottom plate, a socket of the connector a and a plug of the connector a are respectively welded at two ends of the first switching flexible flat cable, and a plug of the connector a and a socket matched with the connector on the corresponding lens module to be tested are respectively welded at two ends of the second switching flexible flat cable. For different lens modules to be tested, only the corresponding second switching flexible flat cable needs to be replaced, so that the universality of the jig is realized.

Preferably, the second switching flexible flat cable has two alternative designs: designing a first connector, wherein when a connector of a lens module to be tested faces upwards, two connectors on a second switching flexible flat cable are respectively welded on two surfaces of the second switching flexible flat cable; and in the second design, when the connector of the lens module to be tested faces downwards, the two connectors on the second switching flexible flat cable are welded on the same surface. When the lens module to be tested is fixed on the jig, the connector of some lens module to be tested faces upwards, the connector of some lens module to be tested faces downwards, and the connector of the lens module to be tested faces upwards intelligently.

Preferably, the clamping device comprises two pairs of spring modules, and the two pairs of spring modules are symmetrically arranged in the horizontal direction and the vertical direction respectively. The structure can realize the position constraint of the lens module to be tested in two mutually perpendicular directions, thereby keeping the center of the lens module to be tested unchanged and ensuring the test quality in the test process.

Preferably, the clamping device is arranged on the jig mounting upper cover, the jig mounting base is provided with the spring floating module, and the position of the clamping device corresponds to the position of the spring floating module. When the jig mounting upper cover is in an open state, the module to be tested is extruded into the spring clamping module to be fixed, then the jig mounting upper cover is closed, and the spring floating module on the jig mounting base is matched to vertically compress the module. The structure limits the movement of the lens module to be tested in three mutually perpendicular directions, and ensures that the position of the lens module to be tested is kept unchanged in the test process.

The jig mounting base is characterized in that a hollowed area is designed in the jig mounting base, and the hollowed area corresponds to the position of a connector of a lens module to be tested. The structure can ensure that the lens module to be tested with the connector facing downwards or the module with the short module and the connector of the module can not expose out of the spring module can also use the scheme. The universality of the jig is further improved.

Preferably, the PCB bottom plate is provided with a jumper column and a binding post, a socket of the connector a on the PCB bottom plate is in signal communication with the jumper column through internal routing of the PCB, and the jumper column is connected with the binding post through a jumper. The jumper can be connected with the jumper post and the machine table to realize the electrical connection between the lens module to be tested and the machine table, and in addition, the mode of converting FPC can also be adopted to realize the electrical connection between the lens module to be tested and the machine table.

Preferably, the PCB bottom plate is fixed below the jig mounting base, and the jig mounting upper cover is hinged to the jig mounting base.

Therefore, the utility model has the following beneficial effects: (1) the universality is good, and the lens module can be suitable for different lens modules; (2) the position of the lens module to be tested can be kept fixed after being clamped; (3) and the cost is saved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the jig mounting upper cover.

Fig. 3 is a schematic structural diagram of a jig mounting base.

Fig. 4 is a schematic diagram of a structure of a PCB backplane.

Fig. 5 is a schematic structural diagram of the first adapting flex cable.

Fig. 6 is a schematic structural view of the second adapting flex cable.

Fig. 7 is a schematic structural view of the second adapting flex cable.

Fig. 8 is a schematic structural diagram of a lens module.

In the figure, a PCB bottom plate 1, a jig mounting base 2, a jig mounting upper cover 3, a second adapting flexible flat cable 4, a first adapting flexible flat cable 5, a jumper post 6, a binding post 7, a clamping device 8, a spring floating module 9, a socket 10 of a connector a, a plug 11 of the connector a, a socket 12 of the connector a, a plug 13 of the connector a, a socket 14 corresponding to the upper connector matching of the lens module to be tested, a lens module 15, and a hollowed area 16.

Detailed Description

The utility model is further described with reference to the following detailed description and accompanying drawings.

In the embodiment shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, and fig. 8, a universal test fixture for camera modules includes a PCB bottom plate 1, a fixture mounting base 2, and a fixture mounting upper cover 3, where the PCB bottom plate 1 is fixed below the fixture mounting base 2, and the fixture mounting upper cover 3 is hinged to the fixture mounting base 2, and is characterized by further including a clamping device 8: preferably, the clamping device 8 comprises two pairs of spring modules, which are symmetrically arranged in the horizontal and vertical directions, respectively. The structure can realize position restraint in two mutually perpendicular directions of the lens module to be tested, so that the center of the lens module to be tested is kept unchanged, the clamping device 8 is arranged on the jig mounting upper cover 3, the spring floating module 9 is arranged on the jig mounting base 2, and the position of the clamping device 8 corresponds to the position of the spring floating module 9. When the jig mounting upper cover 3 is in an open state, the lens module 15 to be tested is extruded into the clamping module 8 to be fixed, then the jig mounting upper cover 3 is closed, and the lens module 15 to be tested is vertically pressed by matching with the spring floating module 9 on the jig mounting base 2. The structure limits the movement of the lens module 15 to be tested in three mutually perpendicular directions, and ensures that the position of the lens module to be tested is kept unchanged in the test process; still include first switching soft arranging wire 4 and second switching soft arranging wire 5, the welding has the socket 10 of connector an on PCB bottom plate 1, the socket 12 of connector an and the plug 11 of connector an have been welded respectively to the both ends of first switching soft arranging wire, the both ends of second switching soft arranging wire have been welded respectively the plug 13 of connector an and correspond connector assorted socket 14 above the lens module that awaits measuring. For different lens modules to be tested, only the corresponding second switching flexible flat cable 5 needs to be replaced, so that the universality of the jig is realized. And the second switching flexible flat cable 4 has two alternative designs: designing a first design, when the connector of the lens module 15 to be tested faces upward, two connectors 13 and 14 on the second switching flexible flat cable 4 are respectively welded on two surfaces of the second switching flexible flat cable 4 (as shown in fig. 6); in the second design, when the connector of the lens module 15 to be tested faces downward, the two connectors 13 and 14 on the second adapting flexible flat cable 4 are soldered on the same surface (as shown in fig. 7). The universality of the jig is further improved. The jig mounting base 2 is provided with a hollow area 16, and the hollow area 16 corresponds to the position of the connector of the lens module 15 to be tested. The structure can ensure that the lens module to be tested with the connector facing downwards or the module with the short module and the connector of the module can not expose out of the spring module can also use the scheme. The universality of the jig is further improved. The PCB bottom plate 2 is provided with a jumper post 6 and a binding post 7, a socket 10 of a connector a on the PCB bottom plate 2 is in signal communication with the jumper post 6 through internal routing of the PCB, and the jumper post 6 is connected with the binding post 7 through a jumper wire. The jumper can connect the jumper post 6 and the machine to realize the electrical connection between the lens module to be tested 15 and the machine, and in addition, the electrical connection between the lens module to be tested and the machine can also be realized by adopting a mode of converting FPC. Therefore, the utility model has the following beneficial effects: (1) the universality is good, and the lens module can be suitable for different lens modules; (2) the position of the lens module to be tested can be kept fixed after being clamped; (3) and the cost is saved.

Claims (9)

1. The utility model provides a general test fixture of camera module, includes PCB bottom plate, tool installation base and tool installation upper cover, characterized by still includes clamping device: the clamping device comprises at least two pairs of spring modules and is arranged on the jig mounting base or the jig mounting upper cover; the switching flexible flat cable assembly comprises a plurality of switching flexible flat cables, and the switching flexible flat cable assembly is connected with the PCB bottom plate and the lens module to be tested through corresponding connectors.

2. The universal testing fixture of claim 1, wherein the adapting flex cable assembly comprises a first adapting flex cable and a second adapting flex cable.

3. The universal test fixture for camera modules according to claim 2, wherein a socket of the connector a is welded on the PCB substrate, a socket of the connector a and a plug of the connector a are welded on two ends of the first switching flexible flat cable respectively, and a plug of the connector a and a socket of the connector matching with the corresponding upper connector of the lens module to be tested are welded on two ends of the second switching flexible flat cable respectively.

4. The universal test fixture for camera modules according to claim 3, wherein the second interconnecting flex cable has two alternative designs: designing a first connector, wherein when a connector of a lens module to be tested faces upwards, two connectors on a second switching flexible flat cable are respectively welded on two surfaces of the second switching flexible flat cable; and in the second design, when the connector of the lens module to be tested faces downwards, the two connectors on the second switching flexible flat cable are welded on the same surface.

5. The universal testing fixture of claim 4, wherein the clamping device comprises two pairs of spring modules, and the two pairs of spring modules are symmetrically arranged in the horizontal and vertical directions respectively.

6. The universal test fixture for camera modules according to claim 5, wherein said clamping device is disposed on said fixture mounting upper cover, said fixture mounting base is disposed with a spring floating module, and the position of said clamping device corresponds to the position of said spring floating module.

7. The universal test fixture for camera modules as claimed in claim 6, wherein the fixture mounting base is formed with a hollowed-out area corresponding to the position of the connector of the lens module to be tested.

8. The universal test fixture for camera modules according to claim 7, wherein the PCB bottom board is provided with jumper posts and terminals, the socket of the connector a on the PCB bottom board realizes signal communication with the jumper posts through PCB internal routing, and the jumper posts are connected with the terminals through jumpers.

9. The universal test fixture for camera modules of claim 8, wherein said PCB bottom plate is fixed under said fixture mounting base, and said fixture mounting upper cover is hinged to said fixture mounting base.

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