Test device and test method suitable for image sensor anti-shake motor

Abstract

The invention provides a test device and a test method suitable for an image sensor anti-shake motor. The test device comprises a carrier plate, a positioning platform and a supporting part. The carrier plate is used for installing the stator which is connected with the rotor through the anti-shake motor. The positioning platform is provided with a mounting groove for mounting a carrier plate, and the positioning platform is also provided with a positioning hole aligned with the rotor; the supporting part is used for penetrating through the positioning hole to support the rotor when the testing device tests the anti-shake motor. According to the test equipment and the test method suitable for the image sensor anti-shake motor, the supporting part is used for supporting the rotor in the vertical direction, so that the rotor is prevented from sinking under the action of self gravity to generate friction with the equipment platform and internal parts of the anti-shake motor, and the stability and the accuracy of product test are improved; the stress of the shape memory alloy wire caused by the gravity influence of the rotor is reduced, the influence of the stress of the shape memory alloy wire on a test result is reduced, and the accuracy of the test result of the shape memory alloy wire is improved.

Description

Technical Field

[0001] The present application relates to a testing device and a testing method suitable for an image sensor anti-shake motor. Background Art

[0002] During the production process of the image sensor anti-shake motor, it is necessary to perform functional testing on the anti-shake motor. The existing anti-shake motor includes SMA (Shape Memory Alloys) wire. The two ends of the SMA wire are respectively connected to the mover for installing the image sensor and the stator fixedly installed on the fuselage. When different currents of different strengths flow through the SMA wire, the SMA wire will present different tension states. In this way, the jitter condition of the image sensor can be detected first, and then the corresponding current is passed through the SMA wire to apply the reverse motion of the jitter amount to the image sensor, thereby eliminating the jitter of the image sensor. During the production process of the anti-shake motor, it is necessary to perform calibration testing on the SMA wire to quantitatively determine the tension of the SMA wire when different currents are passed through. In the existing test, the two ends of the SMA wire are respectively connected to the mover and the stator. The mover and the stator are placed horizontally. During the test, the mover is affected by gravity, sinks, and rubs against the equipment platform and other internal components of the product, resulting in different deformation amounts of the SMA wire caused by the friction of the mover when the same current is passed through, which reduces the accuracy of the SMA wire test. Summary of the invention

[0003] The purpose of the present invention is to provide a testing device and a testing method suitable for an image sensor anti-shake motor, which has the advantage of high testing accuracy.

[0004] To achieve the above object, the present invention provides a test device suitable for an image sensor anti-shake motor, the test device comprising:

[0005] A carrier plate, the carrier plate is used to mount the stator, and the stator is connected to the mover via an anti-shake motor;

[0006] A positioning platform, wherein a mounting groove is provided on the positioning platform for mounting the carrier plate, and a positioning hole is also provided on the positioning platform, and the positioning hole is aligned with the mover;

[0007] A supporting portion, wherein the supporting portion is used to pass through or partially pass through the positioning hole to support the mover when the testing equipment tests the anti-shake motor.

[0008] Optionally, the portion where the support portion contacts the mover is a curved surface.

[0009] Optionally, the contact portion between the support portion and the mover is located at the center of the mover.

[0010] Optionally, the test device further includes a lifting part, which is connected to the supporting part and is used to drive the supporting part to move up and down in the vertical direction.

[0011] Optionally, the lifting part can move between a first position and a second position. When the lifting part is in the first position, the supporting part disengages from the mover; when the lifting part is in the second position, the supporting part passes through or partially passes through the positioning hole to support the mover.

[0012] Optionally, the lifting part includes a cylinder and a connecting rod, and two ends of the connecting rod are respectively connected to the cylinder and the supporting part.

[0013] Optionally, a plurality of the stators and the movers are provided on the carrier plate, and the supporting part includes a plurality of jacking columns, and the plurality of jacking columns are arranged in one-to-one correspondence with the plurality of movers.

[0014] The present invention also provides a test method, which is applicable to the test device for an image sensor anti-shake motor as described above. The test method includes:

[0015] Moving the mover and the anti-shake motor to the carrier plate and aligning the mover with the positioning hole;

[0016] The supporting part supports the mover;

[0017] Conducting a power-on test on the anti-shake motor.

[0018] Optionally, the supporting part supports the mover including:

[0019] The lifting part moves from the first position to the second position, so that the supporting part supports the mover to move to the same horizontal plane as the stator.

[0020] Optionally, after the power-on test of the anti-shake motor is completed, it further includes:

[0021] The lifting part descends from the second position to the first position, and the supporting part disengages from the mover.

[0022] In summary, compared with the prior art, the test method and test device for an image sensor anti-shake motor provided by the present invention have the following beneficial effects:

[0023] The test equipment and test method for an image sensor anti-shake motor according to the present invention are provided with a supporting part on the test equipment. The supporting part is used to support the mover in the vertical direction, avoiding the mover from sinking due to its own gravity and generating friction with the equipment platform and the internal parts of the anti-shake motor, improving the stability and accuracy of product testing, reducing the stress generated by the gravity of the mover on the shape memory alloy wire, reducing the influence of the stress of the shape memory alloy wire on the test result, and improving the accuracy of the test result of the shape memory alloy wire. Description of the Drawings

[0024] Figure 1 It is a top view of the test equipment of the present invention when installing the mover and the anti-shake motor.

[0025] Figure 2 It is a side view of the test equipment of the present invention when installing the mover and the anti-shake motor.

[0026] Figure 3 It is a schematic diagram of the carrier plate and the positioning platform of the test equipment of the present invention.

[0027] Description of the Reference Numerals:

[0028] Test equipment 10

[0029] Carrier plate 110

[0030] Positioning hole 120

[0031] Supporting part 130

[0032] Lifting column 131

[0033] Positioning platform 140

[0034] Mover 200

[0035] Stator 300 Detailed Embodiments

[0036] The following will combine the attached drawings in the embodiments of the present invention Figure 1 ~Attached drawings Figure 3 to elaborate in detail on the technical solutions, structural features, achieved objectives and effects in the embodiments of the present invention.

[0037] It should be noted that the attached drawings adopt a very simplified form and all use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substance significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0038] It should be noted that in the present invention, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements expressly listed, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] As Figure 1 shown, the present invention provides a test device applicable to an image sensor anti-shake motor, including a carrier plate 110, a positioning platform 140 and a supporting portion 130. The carrier plate 110 is used to mount a stator 300, and the stator 300 is connected to a rotor 200 through an anti-shake motor. The anti-shake motor includes SMA (Shape Memory Alloys) wires, and both ends of the SMA wires are respectively connected to the rotor 200 for mounting an image sensor and the stator 300 fixedly mounted on the body. Among them, the rotor 200 and the stator 300 are connected by SMA wires. During the use of the image sensor, if the mounting platform of the image sensor (such as a mobile phone, a camera) shakes, it will affect the image quality. Therefore, it is necessary to perform motion compensation on the rotor 200 to eliminate the influence of the shaking of the mounting platform on the rotor 200. When different intensities of current pass through the SMA wires, the SMA wires will present different tension states. In this way, the shaking of the rotor 200 can be detected first, and then the corresponding current can be applied to the SMA wires to drive the rotor 200 to move through the SMA wires, so as to eliminate the shaking of the rotor 200 and achieve the anti-shake effect through the SMA wires. During the production process, due to manufacturing tolerances and the slight differences of each SMA wire itself, when the same current is passed through different SMA wires, the displacements generated by the rotor 200 will also be slightly different. Therefore, it is necessary to calibrate and test the relationship between the current passing through the SMA wires and the displacement of the rotor 200. During the test process, the rotor 200 is placed horizontally. Since the rotor 200 itself is suspended, the horizontally placed rotor 200 will move downward in the vertical direction. After the rotor 200 moves downward in the vertical direction, it will generate friction with the device platform and other components inside the product. The displacement generated by controlling the rotor 200 when the SMA wires are energized under stress will be different due to the friction between the rotor 200 and other components, resulting in deviation of the test results.

[0040] The positioning platform 140 is provided with a mounting groove for mounting the carrier plate 110, and the positioning platform 140 is also provided with positioning holes 120, as Figure 3As shown, the positioning hole 120 is aligned with the mover 200 mounted on the mounting groove in the vertical direction; the positioning hole 120 is for the supporting portion 130 to pass through the positioning hole 120 to support the mover 200. The supporting portion 130 is for passing through or partially passing through the positioning hole 120 to support the mover 200 when the testing device 10 tests the anti-shake motor, so that when the SMA wire is not powered on, the mover 200 and the stator 300 are in the same horizontal position, avoiding different deformation amounts of the SMA wire in the energized state due to the friction between the mover 200 and other devices, making the test result closer to the deformation amount generated by the SMA wire during actual use and improving the accuracy of the test result.

[0041] Specifically, as Figure 2 shown, the portion of the supporting portion 130 in contact with the mover 200 is an arc surface. In this embodiment, the supporting portion 130 is a spherical ball, and the top of the spherical ball supports the mover 200, so that the mover 200 and the stator 300 are in the same horizontal plane. In addition, in order to improve the supporting efficiency of the supporting portion 130 for the mover 200, the mover 200 can maintain balance when the supporting portion 130 supports the mover 200 and reduce the occurrence of tilting to the side. The contact portion of the supporting portion 130 and the mover 200 is located at the center of the mover 200.

[0042] The testing device 10 further includes a lifting portion. The lifting portion is connected to the supporting portion 130 and is used to drive the supporting portion 130 to move up and down in the vertical direction. In this embodiment, the lifting portion includes a cylinder and a connecting rod. The two ends of the connecting rod are respectively connected to the cylinder and the supporting portion 130, and the cylinder drives the supporting portion 130 to move in the vertical direction through the connecting rod.

[0043] The lifting portion can move between a first position and a second position. When the lifting portion is in the first position, the supporting portion 130 is separated from the mover 200, that is, when the lifting portion is in the first position, the supporting portion 130 does not support the mover 200. In this state, the image sensor anti-shake motor in the mounting groove can be replaced. After the image sensor anti-shake motor in the mounting groove is installed in the mounting groove, the lifting portion is raised to the second position. When the lifting portion is in the second position, the supporting portion 130 passes through or partially passes through the positioning hole 120 to support the mover 200. The distance between the first position and the second position is set according to the actual size of the mounting groove.

[0044] A plurality of movers 200 and stators 300 are provided on the carrier plate 110. The supporting portion 130 includes a plurality of jacking columns 131, and the plurality of jacking columns 131 are arranged in one-to-one correspondence with the plurality of stators 300. In order to improve the test efficiency and simultaneously test a plurality of anti-shake motors, a plurality of movers 200 and stators 300 and a corresponding plurality of supporting portions 130 are provided on the carrier plate 110, so that multiple sets of movers 200, stators 300, and anti-shake motors can be tested simultaneously, improving the test efficiency.

[0045] This embodiment also provides a test method applicable to an image sensor anti-shake motor, which is applicable to the test device 10 for an image sensor anti-shake motor as described above. The test method includes the following steps:

[0046] Move the mover 200 and the anti-shake motor onto the carrier plate 110 and align the mover 200 with the positioning hole 120; the supporting portion 130 supports the mover 200, specifically including: the lifting portion moves from the first position to the second position, so that the supporting portion 130 supports the mover 200 to move to the same horizontal plane as the stator 300; perform a power-on test on the anti-shake motor. After the power-on test of the anti-shake motor is completed, it further includes: the lifting portion descends from the second position to the first position, and the supporting portion 130 disengages from the mover 200. After the test is completed, the supporting portion 130 and the mover 200 are disengaged through the lifting portion, so as to replace the image sensor in the mounting groove 110 and test the subsequent image sensors.

[0047] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A test device applicable to an image sensor anti-shake motor, characterized in that, the test device includes: a carrier board for installing a stator, the stator being connected to a rotor through an anti-shake motor; a positioning platform provided with a mounting groove for installing the carrier board, and further provided with positioning holes thereon, the positioning holes being aligned with the rotor; a supporting portion for passing through or partially passing through the positioning holes to support the rotor when the test device tests the anti-shake motor.

2. The test device applicable to an image sensor anti-shake motor according to claim 1, characterized in that, the portion of the supporting portion in contact with the rotor is an arc surface.

3. The test device applicable to an image sensor anti-shake motor according to claim 2, characterized in that, the contact portion of the supporting portion and the rotor is located at the center of the rotor.

4. The test device applicable to an image sensor anti-shake motor according to claim 1, characterized in that, the test device further includes a lifting portion connected to the supporting portion, the lifting portion being used to drive the supporting portion to move up and down in the vertical direction.

5. The test device applicable to an image sensor anti-shake motor according to claim 4, characterized in that, the lifting portion can move between a first position and a second position. When the lifting portion is in the first position, the supporting portion disengages from the rotor; when the lifting portion is in the second position, the supporting portion passes through or partially passes through the positioning holes to support the rotor.

6. The test device applicable to an image sensor anti-shake motor according to claim 5, characterized in that, the lifting portion includes a cylinder and a connecting rod, and two ends of the connecting rod are respectively connected to the cylinder and the supporting portion.

7. The test device applicable to an image sensor anti-shake motor according to any one of claims 1-6, characterized in that, a plurality of the stators and the rotors are provided on the carrier board, the supporting portion includes a plurality of jacking columns, and the plurality of jacking columns are arranged in one-to-one correspondence with the plurality of rotors.

8. A test method applicable to an image sensor anti-shake motor, applicable to the test device applicable to an image sensor anti-shake motor according to any one of claims 1-7, characterized in that, the test method includes: moving the rotor and the anti-shake motor onto the carrier board and aligning the rotor with the positioning holes; the supporting portion supporting the rotor; performing a power-on test on the anti-shake motor.

9. The test method applicable to an image sensor anti-shake motor according to claim 8, characterized in that, the supporting portion supporting the rotor includes: the lifting portion moving from the first position to the second position so that the supporting portion supports the rotor to move to the same horizontal plane as the stator.

10. The test method applicable to an image sensor anti-shake motor according to claim 9, characterized in that, after the power-on test of the anti-shake motor is completed, it further includes: the lifting portion descending from the second position to the first position, and the supporting portion disengaging from the rotor.

Images