Voice coil motor test fixture

Abstract

The application discloses a voice coil motor test fixture, and belongs to the technical field of camera modules. The voice coil motor test fixture comprises a base, a product seat, a supporting assembly, a three-axis adjusting support and a probe seat. The product seat is fixed on the base through the supporting assembly. The probe seat is fixed on the base through the three-axis adjusting support. The probe seat is moved along the X direction, the Y direction and the Z direction through the three-axis adjusting support, so that the probe fixed on the probe seat is matched and connected with the PIN pin of the voice coil motor to be tested fixed on the product seat. The voice coil motor test fixture disclosed by the application can be widely used for various specifications of voice coil motors, and can conveniently realize fixing and electrical connection, so that the batch test efficiency of the voice coil motor can be improved to a certain extent.

Description

Technical Field

[0001] This application belongs to the field of camera module technology, and in particular relates to a voice coil motor test fixture. Background Technology

[0002] Voice coil motors are widely used in camera modules, primarily to drive optical lenses to move along their optical axis for focusing. To ensure product quality, voice coil motors need to be electrically tested during the production and assembly process. This testing involves assembling the voice coil motor onto a lens model, then fixing the entire assembly into a dedicated test fixture, and connecting external test probes for electrical connection; the testing is then performed.

[0003] However, the differences in the structure and specifications of existing camera modules result in variations in the specifications, number of pins, position, and height parameters of the voice coil motor. Therefore, a dedicated test fixture matching each product needs to be developed, which leads to higher testing costs and longer initial development cycles, affecting overall testing efficiency and costs. Summary of the Invention

[0004] This application provides a voice coil motor test fixture, aiming to at least partially solve the technical problems of voice coil motor test fixtures, such as lack of versatility, long development cycles, and high usage costs. Therefore, This application provides a voice coil motor test fixture, comprising: a base, a product holder, a support assembly, a three-axis adjustment bracket, and a probe holder; the product holder is fixed on the base via the support assembly; the probe holder is fixed on the base via the three-axis adjustment bracket, so that the probe holder can be moved along the X, Y, and Z axes via the three-axis adjustment bracket, so that the probe fixed on the probe holder matches and connects with the pin of the voice coil motor under test fixed on the product holder.

[0005] Furthermore, the three-axis adjustment bracket includes: an X-axis moving assembly, a Y-axis moving assembly, and a Z-axis moving assembly; the X-axis moving assembly includes: an X-axis slider, an X-axis drive, and an X-axis base; the X-axis slider is slidably disposed on the base, the X-axis base is fixedly disposed on the base, and the X-axis drive is connected between the X-axis slider and the X-axis base to elastically drive the X-axis slider to move relative to the base along the X-direction and maintain the probe elastically abutting against the PIN; the Z-axis moving assembly is disposed on the X-axis slider, the Y-axis moving assembly is disposed on the Z-axis moving assembly, and the probe holder is disposed on the Y-axis moving assembly.

[0006] Furthermore, the X-axis drive component includes an X-axis push spring; the two ends of the X-axis push spring are respectively connected to the X-axis slider and the X-axis base to apply an elastic driving force to the X-axis slider.

[0007] Furthermore, the voice coil motor test fixture includes: a fixture operation component; the fixture operation component is disposed on the base and is connected to the X-axis slider to push the X-axis slider to move along the X direction, so as to move the probe holder closer to or away from the probe holder.

[0008] Furthermore, the clamping operation component includes: a push-pull slide plate; the push-pull slide plate is slidably disposed on the base, the push-pull slide plate is provided with a push-top boss, the push-top boss is provided with an X-direction push-top inclined surface, and the X-axis slider abuts against the X-direction push-top inclined surface to push the X-axis slider to move along the X direction when the push-pull slide plate moves.

[0009] Furthermore, the push-top protrusion is also provided with a first push-top plane and a second push-top plane; the push-pull slide plate slides along the Y direction, the first push-top plane and the second push-top plane are arranged in the plane formed by the Y direction and the Z direction, and the first push-top plane and the second push-top plane are respectively connected to the two ends of the X-direction push-top inclined plane, so that the X-axis slider forms two stable state positions in the X direction, serving as the working position and the storage position.

[0010] Furthermore, the clamping operation assembly also includes a product pressure plate; the product pressure plate is rotatably connected to the support assembly to press or release the voice coil motor under test on the product seat.

[0011] Furthermore, the clamping operating assembly also includes: a tension spring and a push rod; the two ends of the tension spring are respectively connected to the product pressure plate and the support assembly to elastically press the product pressure plate against the voice coil motor under test on the product seat; the push rod is slidably connected to the support assembly along the Z direction, and the first end of the push rod abuts against the product pressure plate, and the second end of the push rod abuts against the Z-direction pushing inclined surface opened on the push-pull slide plate to push the push rod along the Z direction during the movement of the push-pull slide plate, and push the product pressure plate away from the voice coil motor under test on the product seat.

[0012] Furthermore, the push-pull slide plate is also provided with a third push-top plane and a fourth push-top plane; the third push-top plane and the fourth push-top plane are arranged in the plane formed by the Y direction and the X direction, and the third push-top plane and the fourth push-top plane are respectively connected to the two ends of the Z-direction push-top inclined plane, so that the push rod forms two stable state positions in the Z direction, serving as the working position and the storage position.

[0013] Furthermore, the clamping operation component also includes a self-locking quick clamp; the self-locking quick clamp is fixed on the base and is connected to the push-pull slide plate.

[0014] The embodiments of this application have at least the following beneficial effects: The voice coil motor test fixture provided in this application has a product holder supported by a support component on the base, which serves as the fixed structure for the voice coil motor under test. A three-axis adjustable bracket based on the XYZ three-dimensional coordinate system supports the probe holder, allowing it to move along the X, Y, and Z directions. This enables the probes fixed on the probe holder to match and connect with the pins of the voice coil motor under test, which are fixed on the product holder. The three-dimensional position adjustment capability of the three-axis adjustable bracket adapts to the different pin positions of various voice coil motor specifications, achieving flexible adjustment of the probe position for electrical connection with the voice coil motor under test. Therefore, the voice coil motor test fixture involved in this application has wide adaptability, improving the versatility of voice coil motor testing. This avoids the need for dedicated test fixtures for each voice coil motor, shortening the development cycle and reducing usage costs to some extent. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the voice coil motor test fixture in an embodiment of this application is shown; Figure 2 It shows Figure 1 Rear view of the voice coil motor test fixture; Figure 3 It shows Figure 1 A top view of the voice coil motor test fixture in the image; Figure 4 It shows Figure 1 Left view of the voice coil motor test fixture in the image; Figure 5 It shows Figure 1 Another structural diagram of the voice coil motor test fixture in the image; Figure 6 It shows Figure 2 Another structural diagram of the voice coil motor test fixture in the image; Figure 7 It shows Figure 1A schematic diagram of the X-axis slider in the voice coil motor test fixture; Figure 8 It shows Figure 1 A schematic diagram of the X-axis base in the voice coil motor test fixture; Figure 9 It shows Figure 1 A schematic diagram of the Z-axis slider in the voice coil motor test fixture; Figure 10 It shows Figure 1 A schematic diagram of the Z-axis adjusting screw in the voice coil motor test fixture; Figure 11 It shows Figure 1 A schematic diagram of the Z-axis locking connector in the voice coil motor test fixture; Figure 12 It shows Figure 1 A schematic diagram of the Y-axis slider in the voice coil motor test fixture; Figure 13 It shows Figure 1 A schematic diagram of the Y-axis adjusting screw in the voice coil motor test fixture; Figure 14 It shows Figure 1 A schematic diagram of the probe holder in the voice coil motor test fixture; Figure 15 It shows Figure 1 A schematic diagram of the product holder in the voice coil motor test fixture; Figure 16 It shows Figure 1 A schematic diagram of the base in the voice coil motor test fixture; Figure 17 It shows Figure 1 A schematic diagram of the product seat support component in the voice coil motor test fixture; Figure 18 It shows Figure 1 A schematic diagram of the support frame in the voice coil motor test fixture; Figure 19 It shows Figure 1 A schematic diagram of the push rod in the voice coil motor test fixture; Figure 20 It shows Figure 1 A schematic diagram of the assembly structure of the X-axis push boss and push-pull slide plate in the voice coil motor test fixture; Figure 21 It shows Figure 1 A schematic diagram of the self-locking quick clamp in the voice coil motor test fixture.

[0017] Figure label: 100-Base, 110-Quick clamp mounting part, 120-X-axis slide rail groove, 130-Bracket fixing groove, 140-Push-up slide rail groove, 150-Baffle locking screw hole; 200-Three-axis bracket, 210-X-axis sliding assembly, 211-X-axis slider, 211a-Spring abutment hole, 211b-Roller arm, 212-X-axis drive unit, 213-X-axis base, 213a-Spring fixing groove, 213b-Baffle fixing hole, 214-X-axis slide rail, 215-X-axis slider, 216-X-axis push roller, 220-Z-axis sliding assembly, 221-Z-axis slider, 221a-Y-axis slide groove, 221b-Z-axis locking hole, 221c-Y-axis slide rod hole, 221d-Screw slot, 221e-Z-axis guide slide hole, 221f-Slide groove sidewall, 221g-Dial disc clearance groove, 221h-Stop limit platform 222-Z-axis adjusting screw, 222a-Z-axis screw body, 222b-dial, 222c-Z-axis connecting blind hole, 223-Z-axis guide slide, 224-connector, 224a-screw part, 224b-nut part, 230-Y-axis sliding assembly, 231-Y-axis slider, 231a-probe holder fixing groove, 231b-Y-axis sliding hole, 231c-Y-axis adjusting screw hole, 231d-probe holder fixing hole, 231e-Y-axis sliding pad, 232-Y-axis adjusting screw, 232a-Y-axis screw body, 232b-first radial boss, 232c-second radial boss, 232d-knob part, 233-Y-axis guide slide; 300 - Probe socket, 310 - Adjustable waist-shaped hole, 320 - Probe insertion hole; 400-Support assembly, 410-Support frame, 411-Rotating shaft hole, 412-Support fixing hole, 420-Product seat support, 421-Top rod clearance groove, 422-Spring tension bolt hole, 423-Support connecting hole; 500 - Product base, 510 - Product fixing slot; 600-Clamping operating assembly, 610-Self-locking quick clamp, 611-Operating lever, 611a-First pivot shaft, 611b-Second pivot shaft, 612-Locking bracket, 612a-First support part, 612b-Second support part, 612c-Sleeve, 613-Connecting plate, 614-Push-pull rod, 614a-Third pivot shaft, 620-Push boss, 621-First push plane, 622-X-direction push slope, 623-Second push plane, 63 0-Push-pull slide plate, 631-Z-direction push-up slope, 632-Third push-up plane, 633-Fourth push-up plane, 640-Push rod, 641-First push wheel, 642-Second push wheel, 643-Push rod fixing part, 650-Push rod slider, 660-Product pressure plate, 661-First spring tension bolt, 662-Tension spring, 663-Pressure plate, 664-Floating pressure plate, 665-Second spring tension bolt, 671-Push-up slider, 672-Push-up slide rail. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] This application is described below with reference to the accompanying drawings and specific embodiments: A voice coil motor (VCO) is a structure that uses the interaction force between an energized coil and a magnet to output driving force. It is commonly used in camera modules to drive an optical lens along its optical axis to achieve zoom. In some embodiments, modified structures based on the VCO principle can also be used for image stabilization; specifically, image stabilization can be achieved by moving the optical lens or image sensor chip.

[0020] In the product manufacturing and assembly process, to ensure quality, the voice coil motor is usually tested. Specifically, the voice coil motor is mounted on a lens model and electrically connected to a testing system to test its operation. For this purpose, a product mounting bracket and connection probes are typically provided to secure the product body and the pins of the voice coil motor, respectively. However, considering the varying specifications of voice coil motors, the corresponding product mounting structure and the arrangement of the connection probes are all matched, and the test fixtures are all dedicated, resulting in poor versatility.

[0021] Therefore, a large number of dedicated test fixtures are required for each product, especially for new products, which need to be redesigned and manufactured. This results in a longer R&D and delivery time, as well as higher costs.

[0022] To improve the versatility and applicability of test fixtures and reduce R&D delivery time and usage costs to some extent, this application provides a voice coil motor test fixture that can flexibly adjust the position of the probe in three-dimensional space to reliably match the pins connecting the probe and the voice coil motor, thereby meeting the needs of various test conditions.

[0023] The details will be explained below.

[0024] See Figure 1 The voice coil motor test fixture includes: a base 100, a product holder 500, a support assembly 400, a three-axis adjustment bracket 200, and a probe holder 300.

[0025] The base 100 serves as the foundation for the device and supports other structures. The product seat 500 serves as the mounting structure for supporting the product to be tested. It is fixed to the base 100 by the support component 400. During the test operation, the product to be tested is directly fixed to the product seat 500.

[0026] The probe holder 300 is used to fix the probes of the electrical connection of the upstream test system in order to match the probes to the PIN of the voice coil motor under test.

[0027] The three-axis adjustment bracket 200 is fixed on the base 100, serving as a support structure for the probe holder 300, and can adjust the position of the probe holder 300 in three axes. For ease of description, the three axes of the three-axis adjustment bracket 200 can be set as the X, Y, and Z directions based on a typical XYZ three-dimensional coordinate system. Furthermore, the Z direction can be set as a vertical direction, and the X and Y directions can be set as two mutually perpendicular directions on a horizontal plane.

[0028] After the probe holder 300 is fixed to the triaxial adjustment bracket 200, the probe holder 300 can be moved along the X, Y and Z directions using the triaxial adjustment structure of the triaxial adjustment bracket 200, so that the probe fixed on the probe holder 300 can move flexibly to match the position of the PIN pin of the voice coil motor under test fixed on the product holder 500 and accurately make contact with the electrical connection.

[0029] The voice coil motor test fixture provided in this application has a product holder supported by a support component on the base, which serves as the fixed structure for the voice coil motor under test. A three-axis adjustable bracket based on the XYZ three-dimensional coordinate system supports the probe holder, allowing it to move along the X, Y, and Z directions. This enables the probes fixed on the probe holder to match and connect with the pins of the voice coil motor under test, which are fixed on the product holder. The three-dimensional position adjustment capability of the three-axis adjustable bracket adapts to the different pin positions of various voice coil motor specifications, achieving flexible adjustment of the probe position for electrical connection with the voice coil motor under test. Therefore, the voice coil motor test fixture involved in this application has wide adaptability, improving the versatility of voice coil motor testing. This avoids the need for dedicated test fixtures for each voice coil motor, shortening the development cycle and reducing usage costs to some extent.

[0030] See Figure 2 and Figure 6 In some embodiments, the three-axis adjustment bracket 200 refers to the XYZ three-dimensional coordinate system architecture and adopts three independently moving and connected moving components to perform moving operations in three directions respectively, thereby realizing the adjustment operation in three directions as a whole.

[0031] Specifically, the three-axis adjustment bracket 200 includes: an X-axis moving component 210, a Y-axis moving component 230, and a Z-axis moving component 220; the X-axis moving component 210 is disposed on the base 100 and performs X-axis driving operation relative to the base 100; the Z-axis moving component 220 is disposed on the moving part of the X-axis moving component 210, thereby allowing the Z-axis moving component 220 to move as a whole along the X-axis; similarly, the Y-axis moving component 230 is disposed on the moving part of the Z-axis moving component 220, thereby allowing the Y-axis moving component 230 to move as a whole along the Z-axis; the probe holder 300 is disposed on the moving part of the Y-axis moving component 230, thereby driving the probe holder 300 in the Y-axis relative to the Z-axis moving component 230; thus, by accumulating the driving operations of the X-axis moving component 210, the Y-axis moving component 230, and the Z-axis moving component 220, the probe holder 300 can be flexibly adjusted in the X, Y, and Z directions.

[0032] It is worth noting that since the X-axis moving component 210, the Y-axis moving component 230, and the Z-axis moving component 220 are independent driving components and perform driving operations independently, the connection order between the three does not affect the result of the three-axis movement adjustment. Therefore, the connection relationship between the three can be flexibly adjusted. In this embodiment, the connection method in which the X-axis moving component 210 is fixed on the 100, the Z-axis moving component 220 is disposed on the moving part of the X-axis moving component 210, the Y-axis moving component 230 is disposed on the moving part of the Z-axis moving component 220, and the probe seat 300 is fixed on the Y-axis moving component 230 is used as an example for explanation.

[0033] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the X-axis moving assembly 210 includes an X-axis slider 211, an X-axis drive 212, and an X-axis base 213.

[0034] The X-axis slider 211, serving as an X-axis moving component, is slidably mounted on the base 100 and carries the Y-axis moving component 230 and the Z-axis moving component 220, which reciprocate along the X-axis. Specifically, an X-axis slide rail 214 can be provided on the base 100 along the X-axis, and an X-axis slider 215 can be slidably mounted on the X-axis slide rail 214. The X-axis slider 215 is fixed on the X-axis slider 211, so that the X-axis slider 211 can stably reciprocate in the X-axis direction under the guidance of the X-axis slide rail 214, thereby adjusting the position of the probe holder 300 in the X-axis direction.

[0035] To drive the X-axis slider 211, the X-axis base 213 can be fixed on the base 211. The X-axis drive 212 is connected between the X-axis slider 211 and the X-axis base 213. The X-axis drive 212 outputs an elastic force to drive the X-axis slider 211 to move. After the voice coil motor under test is assembled, the elastic force causes the probe fixed on the probe holder 300 to elastically abut against the PIN of the voice coil motor under test on the product holder 500, so as to ensure the stability and reliability of the electrical connection.

[0036] In some embodiments, the X-axis base 213 is fixed on the base 100, serving as the force application basis for the X-axis drive 212, driving the X-axis slider 211 to move; wherein, the X-axis drive 212 may be configured as an elastic element, outputting a continuous force through deformation, driving the X-axis slider 211 to move toward the PIN of the voice coil motor under test, so as to form a tendency to cause the probe to contact and connect with the PIN, and maintain a certain contact pressure after contact and connection, maintaining the stability of the contact and connection, thereby ensuring the stability and reliability of the electrical connection.

[0037] When changing to a different product, the elastic force of the reversible elastic element directly pushes the X-axis slider 211 to move, leaving enough space to remove and replace the voice coil motor under test. Then, the X-axis slider 211 is released. Driven by the elastic force, the X-axis slider 211 moves toward the voice coil motor under test, establishing a contact connection between the probe and the PIN of the replaced voice coil motor.

[0038] It is worth noting that the movement of the X-axis slider 211 is passive, meaning that the X-axis drive 212 is normally in a deformed state, maintaining a certain elastic force that always acts on the X-axis slider 211, causing the X-axis slider 211 to maintain a tendency to move. Thus, when the probe on the probe holder 300 contacts the PIN of the voice coil motor under test, a certain elastic contact force is maintained, ensuring the stability of the contact connection. On the other hand, when testing products of different specifications, and the position of the PIN of the voice coil motor changes in the X direction, the X-axis slider 211 can move appropriately under the action of the X-axis drive 212 to maintain a stable contact connection between the probe and the PIN.

[0039] Generally, the direction of the force of the X-axis drive component 212 can be maintained in the X-direction, which facilitates the selection of elastic components and the design of elastic force; of course, it is also possible that the force of the X-axis drive component 212 may be in other directions, but retain a component in the X-direction, which can be flexibly set.

[0040] Of course, the X-axis drive 212 can also be configured as a linear drive mechanism, which can actively adjust the position of the X-axis slider 211, making it highly operable; and the X-axis slider 211 can be statically positioned directly by the X-axis drive 212 to maintain static contact between the probe and the PIN, thus maintaining a stable contact connection.

[0041] In some embodiments, the X-axis drive member 212 may be configured as an X-axis push spring, with both ends of the X-axis push spring connected to the X-axis slider 211 and the X-axis base 213 respectively, so as to apply an elastic driving force to the X-axis slider 211.

[0042] See Figure 3 , Figure 6 , Figure 7 and Figure 8 Specifically, when the X-axis slider 211 and the X-axis base 213 are positioned on the same side of the product base 500, the X-axis push spring can be compressed between the X-axis slider 211 and the X-axis base 213. Correspondingly, a spring fixing groove 213a can be provided on the X-axis base 213 to accommodate and fix the first end of the X-axis push spring, and a spring abutment hole 211a can be provided on the X-axis slider 211 to accommodate the second end of the X-axis push spring. Thus, the stability of the X-axis push spring is ensured by limiting the position at both ends.

[0043] See Figure 8 and Figure 16 The X-axis base 213 can be configured as a baffle and a baffle fixing hole 213b is provided thereon. Correspondingly, a baffle locking screw hole 150 is provided on the base 100, so that the X-axis base 213 can be locked on the base 100 by bolts passing through the baffle fixing hole 213b.

[0044] In some embodiments, in order to meet the electrical connection requirements when PIN pins are provided on both sides of certain products, two triaxial adjustment brackets 200 can be provided, respectively located on the corresponding sides of the PIN pins; of course, if there are more PIN pin locations, more triaxial adjustment brackets 200 can be provided accordingly, which will not be elaborated here.

[0045] See Figure 2 , Figure 9 , Figure 10 and Figure 11 In some embodiments, the Z-axis moving component 220 is mounted entirely on the X-axis slider 211 of the X-axis moving component 210, so that it can move in the X direction under the drive of the X-axis drive member 212; and the Z-axis moving component 220 can move the Y-axis moving component 230 entirely in the Z direction.

[0046] The Z-axis moving assembly 220 includes: a Z-axis slider 221, a Z-axis adjusting screw 222, and a Z-axis guide slider 223.

[0047] The Z-axis guide slide 223 is arranged axially along the Z direction, and the Z-axis guide slide 223 is arranged on the X-axis slider 211. The Z-axis slider 221 moves closer to or further away from the Z-axis slider 221 along the Z direction through the Z-axis guide slide 223.

[0048] Specifically, the Z-axis guide slide rod 223 can be fixed on the X-axis slider 211. The Z-axis slider 221 has a Z-axis guide slide hole 221e. The Z-axis guide slide rod 223 is slidably embedded in the Z-axis guide slide hole 221e, so that the Z-axis slider 221 can slide along the Z-axis guide slide rod 223 and move closer to or away from the X-axis slider 211 in the Z direction.

[0049] In some embodiments, the Z-axis guide slide hole 221e may be formed on the X-axis slider 211, and the Z-axis guide slide rod 223 may be fixed on the Z-axis slider 221. The Z-axis guide slide rod 223 may be slidably embedded in the Z-axis guide slide hole 221e. Through the relative sliding guide limiting effect of the Z-axis guide slide rod 223 and the Z-axis guide slide hole 221e, the Z-axis slider 221 may be pushed to move stably along the Z-direction.

[0050] To drive the Z-axis slider 221 to move based on the X-axis slider 211, a Z-axis drive component can be connected between the Z-axis slider 221 and the X-axis slider 211 to drive the Z-axis slider 221 closer to or further away from the X-axis slider 211. Specifically, the Z-axis drive component can be set as the Z-axis adjusting screw 222, with the first end of the Z-axis adjusting screw 222 screwed onto the X-axis slider 211 and the second end connected onto the Z-axis slider 221. Thus, the Z-axis adjusting screw 222 can be screwed into or out of the X-axis slider 221 as a whole along its axial direction, thereby pulling closer to or pushing away from the Z-axis slider 221 relative to the X-axis slider 211, achieving the displacement adjustment in the Z direction.

[0051] See Figure 2 and Figure 10 To facilitate the rotation of the Z-axis adjusting screw 222, the Z-axis adjusting screw 222 may include: a Z-axis screw body 222a and a dial 222b fixed thereon. By pushing the dial 222b, the Z-axis screw body 222a can be rotated in both directions to push and pull the Z-axis slider 221. On the other hand, the two ends of the Z-axis screw body 222a are respectively screwed to the X-axis slider 211 and the Z-axis slider 221. By rotating the Z-axis screw body 222a, the X-axis slider 211 and the Z-axis slider 221 can be brought closer or pushed further apart.

[0052] See Figure 9 and Figure 10Considering that the Z-axis adjusting screw 222 constrains the relative movement of the X-axis slider 211 and the Z-axis slider 221 in the Z-direction, and that both ends of the Z-axis screw body 222a are screwed onto the Z-axis slider 221 and the X-axis slider 211 respectively, the assembly operation is inconvenient. Therefore, the dial 222b can be fixed to the second end of the Z-axis screw body 222a. The dial 222b has a Z-axis connecting blind hole 222c, and the Z-axis connecting blind hole 222c is coaxially arranged with the Z-axis screw body 222a. Then, a Z-axis locking hole 221b is opened on the Z-axis slider 221, and a connector 224 is provided to pass through the Z-axis locking hole 221b and be screwed into the Z-axis connecting blind hole 222c, thereby simplifying the assembly operation.

[0053] The connector 224 is configured as a headed bolt structure, comprising a screw portion 224a and a nut portion 224b. The first end of the screw portion 224a passes through the Z-axis locking hole 221b and is screwed into the Z-axis connecting blind hole 222c. The nut portion 224b is fixed to the second end of the screw portion 224a and is limited and stopped at the outer extension of the opening of the Z-axis locking hole 221b. Thus, the Z-axis adjusting screw 222 can be connected to the Z-axis slider 221. When the Z-axis adjusting screw 222 rotates, the dial 222b can push the Z-axis slider 221 away from the X-axis slider 211, or the connector 224 can pull the Z-axis slider 221 closer to the X-axis slider 211.

[0054] In order to reduce the nut portion 224b protruding from the Z-axis slider 221 and interfering with other structures, the Z-axis locking hole 221b can be set as a countersunk hole, and the nut portion 224b can be embedded therein.

[0055] Generally, the first end of the screw portion 224a can be tightened and pressed against the bottom of the blind hole 222c of the Z-axis connection, and the nut portion 224b can be rotatably disposed in the countersunk hole, so that the nut portion 224b can stably follow the rotation of the Z-axis screw body 222a, but the nut portion 224b maintains low friction with the Z-axis slider 221.

[0056] Alternatively, a high-precision molding process can be used to maintain a small gap between the dial 222b and the Z-axis slider 221, or between the Z-axis slider 221 and the nut portion 224b, while the first end of the screw portion 224a is tightened against the bottom of the Z-axis connecting blind hole 222c. This reduces contact friction and ensures smooth relative rotation. A self-lubricating material layer can also be provided at the base of the countersunk hole and the nut portion 224b to reduce the coefficient of friction.

[0057] It is worth noting that during the Z-axis adjustment operation, the dial 222b can be turned to rotate the screw 224a, thereby causing the screw 224a to gradually push the dial 222b to push the Z-axis slider 221 away from the X-axis slider 211, or the screw 224a can gradually pull the connector 224 to push the Z-axis slider 221 closer to the X-axis slider 211.

[0058] In some embodiments, in order to improve the stability of the direction and posture of the Z-axis slider 221 in the Z-axis direction, the number of Z-axis guide sliders 223 can be multiple, such as two, three, four or more, without specific limitations.

[0059] In some embodiments, in order to facilitate the operation of the dial 222b, a dial clearance groove 221g can be provided in the contact area of ​​the Z-axis slider 221 near the dial 222b, so that the operator's fingers have sufficient room to move.

[0060] See Figure 2 , Figure 6 , Figure 9 , Figure 12 and Figure 13 In some embodiments, the Y-axis moving component 230 is mounted entirely on the Z-axis slider 221 of the Z-axis moving component 220, so that it can move in the Y direction under the drive of the Z-axis adjusting screw 222; and the Y-axis moving component 230 can move the probe seat 300 entirely in the Y direction.

[0061] The Y-axis moving component 230 includes: a Y-axis slider 231, a Y-axis adjusting screw 232, and a Y-axis guide slider 233.

[0062] The Y-axis guide slide 233 is arranged along the Y direction and is mounted on the Z-axis slider 221. The Y-axis slider 231 can move relative to the Z-axis slider 221 along the Y direction via the Y-axis guide slide 233.

[0063] See Figure 2 , Figure 9 and Figure 12Specifically, a groove structure, namely a Y-axis groove 221a, can be formed on the Z-axis slider 221. The Y-axis guide rod 233 is fixed on the groove sidewall 221f of the Y-axis groove 221a. The Y-axis slider 231 is slidably embedded in the Y-axis groove 221a, and a Y-axis sliding hole 231b is formed on the Y-axis slider 231. The Y-axis guide rod 233 is slidably embedded in the Y-axis sliding hole 231b, so that the Y-axis slider 231 can slide in the Y direction through the guide and limit of the Y-axis guide rod 233.

[0064] To improve the stability of the sliding posture and direction, the Y-axis guide slide rod 233 can be arranged in multiple parallel positions along the Y direction, and the Y-axis sliding hole 231b can be arranged in multiple matching positions.

[0065] To drive the Y-axis slider 231, a Y-axis drive component can be connected between the Y-axis slider 231 and the Z-axis slider 221, and the Y-axis drive component can be specifically configured as the Y-axis adjusting screw 232; wherein, the Y-axis adjusting screw 232 can be fixed in place on the slide groove sidewall 221f around its axis, and the first end of the Y-axis adjusting screw 232 is screwed into the Y-axis adjusting screw hole 231c opened on the Y-axis slider 231, so that the Y-axis adjusting screw 232 can be rotated to push and pull the Y-axis slider 231 to move along the Y direction.

[0066] To enable the Y-axis adjusting screw 232 to rotate in place, a screw slot 221d can be formed on the side wall 221f of the slide groove. The Y-axis screw body 232a of the Y-axis adjusting screw 232 is rotatably embedded in the screw slot 221d. A first radial boss 232b and a second radial boss 232c are provided on the Y-axis screw body 232a at intervals along its axial direction. The first radial boss 232b and the second radial boss 232c are respectively located in the screw slot 221d to restrict the movement of the Y-axis screw body 232a along its axial direction.

[0067] To facilitate the rotation of the Y-axis screw body 232a, a knob part 232d can be provided at the second end of the Y-axis screw body 232a.

[0068] In some embodiments, to prevent the Y-axis slider 231 from excessively approaching the slide sidewall 221f and being over-adjusted, a stop limiting platform 221h can be provided on the slide sidewall 221f to limit the position of the Y-axis slider 231.

[0069] To simplify the overall assembly structure, a Y-axis sliding pad 231e can be provided at the bottom of the Y-axis slider 231. The width of the Y-axis sliding pad 231e in the Y direction is smaller than the width of the Y-axis slider 231. This provides sufficient Y-axis movement space when the Y-axis sliding pad 231e is embedded in the Y-axis groove 221a, thus enabling a certain Y-axis adjustment range. At the same time, the Y-axis width of the Z-axis slider 221 does not need to be very large, which can reduce the overall device size to a certain extent.

[0070] Correspondingly, the Y-axis sliding hole 231b and the Y-axis adjusting screw hole 231c can be formed on the Y-axis sliding pad 231e.

[0071] See Figure 3 , Figure 4 , Figure 6 , Figure 12 and Figure 14 In some embodiments, a probe holder fixing hole 231d can be provided in the Y-axis slider 231, and the probe holder 300 can be pressed onto the Y-axis slider 231 by threaded fasteners.

[0072] To facilitate adjustment of the fixed position of the probe holder 300, the number of the probe holder fixing holes 231d can be set to multiple, which can be flexibly selected as needed; an adjustment waist-shaped hole 310 can also be provided in the probe holder 300, so that the fixed position can be flexibly adjusted by moving along the long axis direction of the adjustment waist-shaped hole 310.

[0073] The probe holder 300 has matching probe sockets 320 according to the specifications and quantity of the probes, or the number of probe sockets 320 can be relatively more than the number of probes, and the specifications of the probe sockets 320 can also be set in multiple ways for backup.

[0074] See Figures 1-6 In some embodiments, in order to improve the precision of operation and avoid manual and rough pushing of the X-axis slider 211, the voice coil motor test fixture may also be provided with a fixture operation component 600. Specifically, the fixture operation component 600 may be set on the base 100 and connected to the X-axis slider 211 to push the X-axis slider 211 to move along the X direction, so that the probe seat is closer to or away from the probe seat.

[0075] See Figures 3-6 and Figure 20Specifically, the clamping operation assembly 600 includes a push-pull slide plate 630, which is slidably mounted on the base 100. The push-pull slide plate 630 is provided with a push-up boss 620, and the push-up boss 620 is provided with an X-direction push-up inclined surface 622. The X-axis slider 211 abuts against the X-direction push-up inclined surface 622 to push the X-axis slider 211 to move along the X-direction when the push-pull slide plate 630 moves, moving closer to or away from the product seat 500.

[0076] In other words, during movement, the position of the X-axis pushing ramp 622 in the X-axis direction changes, thereby pushing the X-axis slider 211 to move along the X-axis.

[0077] In some embodiments, the moving direction of the push-pull slide plate 630 can be specifically set to the Y direction. Correspondingly, the projection of the X-direction pushing inclined surface 622 in the planes containing the X and Y directions has an angle with both the Y and X directions, so that the X-axis slider 211 can be pushed to move when the push-pull slide plate 630 moves.

[0078] In other words, with the plane containing the X and Y directions as the horizontal plane, the push-pull slide plate 630 can move along the Y direction in the horizontal plane, and the X-axis slider 211 can move along the X direction. Correspondingly, the X-direction pushing slope 622 is a vertical plane and has an angle with the X and Y directions, so that it can push the X-axis slider 211 when moving in the Y direction.

[0079] See Figure 5 and Figure 7 To further improve the smoothness of the push-up boss 620 pushing the X-axis slider 211, a lifting arm roller 211b can be provided on the X-axis slider 211, and an X-axis push-up roller 216 can be rotatably provided on the roller lifting arm 211b. Thus, the X-axis slider 211 abuts against the push-up boss 620 through the X-axis push-up roller 216. As the push-pull slide plate 630 moves, the X-axis push-up roller 216 can reduce the pushing contact resistance by rotating, making the pushing process smooth.

[0080] In some embodiments, considering that the X-axis drive 212 uses an elastic element such as a spring, the X-axis slider 211 will tend to move towards the product seat 500. Once there is room to move, it will maintain the state closest to the product seat 500, which is inconvenient for the placement and replacement of the product under test. Therefore, a storage position can be provided for the X-axis slider 211. A second pushing plane 623 is provided on the pushing boss 620, which connects with the X-axis pushing inclined surface 622. In the storage position, the X-axis slider 211 abuts against the second pushing plane 623 and maintains a certain distance from the product seat 500, and the state is stable, leaving enough space for operation within the product seat 500 and avoiding mutual interference.

[0081] On the other hand, considering that the X-axis drive component 212 uses elastic elements such as springs, as the X-axis slider 211 gets closer to the product seat 500, it is farther from the X-axis base 213. In this case, the deformation of the elastic element is smaller, its ability to maintain its shape is weaker, and the pushing force on the X-axis slider is also smaller. When subjected to a certain degree of impact or vibration, the X-axis slider is prone to disengaging from its current position, especially when the X-axis slider 211 is adjusted to maintain the probe electrical connection. Therefore, a working position can be provided for the X-axis slider 211, and the pushing boss 620 can be provided with an inclined surface 6 for pushing the X-axis. The first push-up plane 621, which is connected to the 22, is used to limit the distance between the X-axis slider 211 and the X-axis base 213 in the X direction. In the working position, the X-axis slider 211 abuts against the first push-up plane 621 and maintains a certain distance from the X-axis base 213. The deformation of the elastic element is maintained at a certain level and the state is stable, thereby ensuring the stability of the force applied to the X-axis slider 211 and ensuring that the X-axis slider 211 can be maintained in the working position. Correspondingly, the distance between the probe seat 300 and the product seat 500 is also kept stable, which facilitates maintaining the stable contact electrical connection between the probe and the PIN.

[0082] Considering that the push-pull slide plate 630 slides along the Y direction, the first push-top surface 621 and the second push-top surface 623 are also arranged in the plane formed by the Y direction and the Z direction, that is, in the plane perpendicular to the X direction, so that when the push-pull slide plate 630 moves slightly in the Y direction, the position of the X-axis slider 211 can remain unchanged.

[0083] On the other hand, the first pushing plane 621 and the second pushing plane 623 are respectively connected to the two ends of the X-axis pushing inclined surface 622, which facilitates the smooth sliding of the X-axis slider 211 into and out of the X-axis pushing inclined surface 622, making the operation of the clamping operation component 600 smooth and easy.

[0084] See Figure 2 and Figure 5 A push-top slide rail 672 can be provided on the base 100 along the Y direction, a push-top slider 671 can be provided on the push-top slide rail 672, and the push-pull slide plate 630 can be fixed on the push-top slider 671, thereby enabling the push-pull slide plate 630 to slide stably along the Y direction.

[0085] See Figures 3-6 and Figure 21 In some embodiments, in order to further improve the position holding ability and anti-interference ability of the push-pull slide plate 630, a self-locking quick clamp 610 can be provided on the base 100 and the self-locking quick clamp 610 can be connected to the push-pull slide plate 630, so that the push-pull slide plate 630 can be mechanically locked when it is in the storage position and the working position, so as to avoid the X-axis slider 211 from being disturbed and shifting.

[0086] See Figure 21 This application provides an embodiment of the self-locking quick clamp 610, specifically including: an operating lever 611, a first pivot shaft 611a, a second pivot shaft 611b, a locking bracket 612, a connecting plate 613, a push-pull rod 614, and a third pivot shaft 614a; the locking bracket 612 is fixed on the base 100, and the locking bracket 612 is provided with a first support portion 612a and a second support portion 612b; the operating lever 611 is connected to the second support portion 614a via the first pivot shaft 611a. The operating lever 611 is pivotally connected to the connecting plate 613 via the second pivot shaft 611b. The connecting plate 613 is connected to the first end of the push-pull rod 614 via the third pivot shaft 614a. The push-pull rod 14 is slidably embedded in the sleeve 612c on the first support part 612a. Thus, the push-pull rod 614 can be pushed and pulled by operating the operating lever 611 to achieve locking and unlocking, thereby pushing the push-pull slide plate 630 to achieve locking and unlocking.

[0087] See Figure 4 , Figure 5 , Figure 15 , Figure 17 and Figure 18 The support component 400 is mainly used to support and position the voice coil motor under test, so that the three-axis adjustment bracket 200 can operate and match the PIN pin of the voice coil motor under test on the product holder 500.

[0088] Specifically, the support assembly 400 includes a support frame 410 and a product seat support 420. The support frame 410 can be upright and fixed on the base 100 to form a support base at a certain height relative to the base 100. The product seat support 420 is fixed on the support frame 410 and serves as a support and fixing structure for the product seat 500. The corresponding product seat 500 can be fixed on the product seat support 420.

[0089] Generally, the support frame 410 and the product seat support 420 can be assembled from two independent workpieces. Specifically, a support fixing hole 412 can be opened on the upper part of the support frame 410, and a support connecting hole 423 can be opened on the product seat support 420. Then, the product seat support 420 can be tightened by passing fastening bolts through the support connecting hole 412 and the support connecting hole 423.

[0090] See Figure 4 and Figure 5 In some embodiments, considering that the PIN of the voice coil motor under test is pressed by the probe, and the entire voice coil motor under test rests on the product holder 500, there is a risk of the product springing up and becoming displaced; therefore, the clamping operation assembly 600 also includes a product pressure plate 660; the product pressure plate 660 is rotatably connected to the support assembly 400 to press or release the voice coil motor under test on the product holder 500.

[0091] Specifically, one end of the product pressure plate 660 is rotatably connected to the support assembly 400 via a pivot shaft, thereby allowing the product pressure plate 660 to be deflected and pressed down onto the voice coil motor under test on the product holder 500, preventing the voice coil motor under test from moving upwards. Correspondingly, when changing products, the product pressure plate 660 can be flipped upwards to create space for replacing the voice coil motor under test.

[0092] Generally, two support arms can be provided on the top of the support frame 410, and pivot holes 411 can be opened on the two support arms respectively. Then, a pivot shaft can be fixed through the two pivot holes 411, and the product pressure plate 660 can be sleeved on the pivot shaft.

[0093] See Figure 4 , Figure 5 , Figure 19 and Figure 20In some embodiments, to enhance the clamping reliability of the product pressure plate 660, the clamping operation assembly 600 further includes a tension spring 662; the two ends of the tension spring 662 are respectively connected to the product pressure plate 660 and the support assembly 400, so as to elastically press the product pressure plate 660 against the voice coil motor under test on the product seat 500, thereby applying a certain elastic pressure to resist the impact force of the voice coil motor under test.

[0094] On the other hand, in order to facilitate the flipping of the product pressure plate 660, a push rod 640 can also be provided, and the push rod 640 can be slidably connected to the support assembly 400 along the Z direction, and the first end of the push rod 640 abuts against the product pressure plate 660 and pushes the product pressure plate 660 away from the voice coil motor under test on the product seat 500.

[0095] Specifically, the push rod 640 has a push rod fixing part 643 in the middle, which is fixed to the push rod slider 650. The push rod slider 650 is slidably connected to the support frame 410. Correspondingly, the product pressure plate 660 is rotatably connected to the top of the support frame 410. Thus, the push rod 640 can slide along the Z-direction to push the product pressure plate 660, thereby pushing the product pressure plate 660 to flip against the tension of the tension spring 662. When the push rod 660 releases the state of pushing the product pressure plate 660, or moves away from the product pressure plate 660 along the Z-direction, the tension of the tension spring 662 will pull the product pressure plate 660 to press against the product seat 500 until the voice coil motor under test is pressed.

[0096] In order to drive the push rod 640 to move in the Z direction, a Z-direction pushing slope 631 can be provided on the push-pull slide plate 630. The second end of the push rod 640 abuts against the Z-direction pushing slope 631, and the Z-direction pushing slope 631 can generate a certain displacement relative to the product seat 500 in the Z direction during the movement, that is, approach or move away from the product seat 500. Thus, the push rod 640 can be pushed along the Z direction or the product pressure plate 660 can be released during the movement of the push-pull slide plate 630.

[0097] In other words, the height difference of the Z-direction pushing inclined surface 631 in the Z direction is linearly varied, so that when the push-pull sliding plate 630 moves, the push rod 640 can be pushed or released.

[0098] In some embodiments, to reduce the contact friction between the push rod 640 and the product pressure plate 660 and the Z-direction pushing inclined surface 631, a first push wheel 641 and a second push wheel 642 can be respectively provided at both ends of the push rod 640, respectively abutting against the product pressure plate 660 and the Z-direction pushing inclined surface 631, thereby enabling smooth pushing of the push rod 640. See Figure 20 In some embodiments, considering that the tension spring 662 continuously applies force to pull the product pressure plate 660 down and press the top rod 640, in order to stably support the top rod 640 and ensure the product pressure plate 660 is in the open standby state, a third pushing plane 632 can be provided on the push-pull slide plate 630 to connect with the Z-direction pushing inclined surface 631 at a relatively high position in the Z direction, so as to stably support the top rod 640 at a relatively high position in the Z direction and stably open the product pressure plate 660.

[0099] On the other hand, in the working state, the push-pull slide plate 630 is also provided with a fourth push-top plane 633 that connects with the Z-direction push-top inclined surface 631 at a relatively low position in the Z-direction, thereby providing clearance space for the push rod 640 at a relatively low position in the Z-direction, especially in terms of height, so as to prevent the push rod 640 from obstructing the product pressure plate 660 from moving away from the voice coil motor under test in the Z-direction.

[0100] Similarly, the third pushing plane 632 and the fourth pushing plane 633 are arranged in the plane formed by the Y direction and the X direction, so that the push rod 640 forms two stable positions in the Z direction, serving as the working position and the storage position.

[0101] In other words, the voice coil motor test fixture has two working states: the fixture is unloaded and the fixture is tested. The fixture is unloaded when the fixture is not holding the voice coil motor to be tested, and the fixture is tested when the fixture is holding the voice coil motor to be tested.

[0102] When the fixture is unloaded, the X-axis slider 211 abuts against the second push plane 623, the push rod 640 abuts against the third push plane 632, and the product pressure plate 660 is in a flipped-up state, leaving the product seat 500 exposed, waiting to load the voice coil motor to be tested.

[0103] During the testing operation, after the voice coil motor under test is loaded onto the product holder 500, the self-locking quick clamp 610 is operated to push the push-pull slide plate 630 to slide along the Y-axis direction. The X-axis slider 211 slides along the X-axis push-up slope 622 in the X-axis direction. The probe on the probe holder 300 gradually approaches the product holder 500 and finally abuts against the pin of the voice coil motor under test. At the same time, the push rod 640 moves along the Z-axis push-up slope 631 and finally lands on the fourth push-up plane 633. Meanwhile, the product pressure plate 660 is gradually pressed down under the traction of the tension spring 662 until it presses firmly onto the voice coil motor under test.

[0104] After the test is completed, the self-locking quick clamp 610 is reversed, and the push-pull slide plate 630 is pulled to slide in the opposite direction along the Y-axis. The X-axis slider 211 slides in the opposite direction along the X-axis pushing slope 622, and the probe on the probe seat 300 gradually moves away from the product seat 500. At the same time, the push rod 640 moves in the opposite direction along the Z-axis pushing slope 631 and eventually rises onto the third pushing plane 632. Meanwhile, the product pressure plate 660 gradually flips up against the traction force of the tension spring 662 under the push of the push rod 640, so as to gradually expose the product seat 500 for the next use.

[0105] Therefore, by operating the self-locking quick clamp 610, the test probe can be brought into contact with or moved away from the pin of the voice coil motor under test, and the product pressure plate 660 can be pressed down or flipped up simultaneously, which greatly simplifies the clamp operation.

[0106] It is worth noting that the first end of the tension spring 662 is connected to the first spring tension bolt 661 on the product pressure plate 660, and the second end of the tension spring 662 is connected to the second spring tension bolt 665 on the product seat support 420.

[0107] See Figure 4 and Figure 5 In some embodiments, in order to adapt to various models of voice coil motors under test, a replaceable clamping plate 663 can be connected to the front end of the product pressure plate 660; and a floating pressure plate 664 can be further provided on the clamping plate 663 to flexibly contact and clamp the voice coil motor under test.

[0108] The floating pressure plate 664 can be made of an elastic rubber ring; or, multiple springs can be connected between the elastic rubber ring and the pressure plate 663 to achieve elastic compression.

[0109] In order to ensure the smooth movement of the top rod 640, a top rod clearance groove 421 can be provided on the contact side between the product seat support 420 and the support frame 410 to leave enough space to facilitate the movement of the top rod 640.

[0110] See Figure 15 In some embodiments, the product holder 500 may be configured as an integral structural component and have a product fixing groove 510 to facilitate the fixing of the voice coil motor under test.

[0111] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A voice coil motor testing fixture, characterized in that, include: Base, product holder, support components, three-axis adjustment bracket, and probe holder; The product holder is fixed to the base by the support assembly; The probe holder is fixed to the base via the three-axis adjustment bracket, so that the probe holder can be moved along the X, Y and Z directions via the three-axis adjustment bracket, so that the probe fixed on the probe holder is matched and connected with the PIN of the voice coil motor under test fixed on the product base. The three-axis adjustment bracket includes: an X-axis moving component, a Y-axis moving component, and a Z-axis moving component; The X-axis moving assembly includes: an X-axis slider, an X-axis drive component, and an X-axis base; The X-axis slider is slidably disposed on the base, the X-axis base is fixedly disposed on the base, and the X-axis drive is connected between the X-axis slider and the X-axis base to elastically drive the X-axis slider to move relative to the base along the X-direction and keep the probe elastically abutting against the PIN. The Z-axis moving component is disposed on the X-axis slider, the Y-axis moving component is disposed on the Z-axis moving component, and the probe holder is disposed on the Y-axis moving component; The voice coil motor test fixture includes: a fixture operating assembly, which includes: a push-pull slide plate, a product pressure plate, a tension spring, and a push rod; The push-pull slide plate is slidably mounted on the base. The push-pull slide plate is provided with a push-top boss. The push-top boss is provided with an X-direction push-top inclined surface. The X-axis slider abuts against the X-direction push-top inclined surface to push the X-axis slider to move along the X-direction when the push-pull slide plate moves. The product pressure plate is rotatably connected to the support assembly to press or release the voice coil motor under test on the product seat; The two ends of the tension spring are respectively connected to the product pressure plate and the support assembly, so as to elastically press the product pressure plate against the voice coil motor under test on the product seat; The push rod is slidably connected to the support assembly along the Z-direction, and the first end of the push rod abuts against the product pressure plate, and the second end of the push rod abuts against the Z-direction pushing slope opened on the push-pull slide plate, so as to push the push rod along the Z-direction during the movement of the push-pull slide plate, and push the product pressure plate away from the voice coil motor under test on the product seat.

2. The voice coil motor test fixture as described in claim 1, characterized in that, The X-axis drive component includes: an X-axis push spring; The two ends of the X-axis push spring are connected to the X-axis slider and the X-axis base, respectively, to apply an elastic driving force to the X-axis slider.

3. The voice coil motor test fixture as described in claim 1, characterized in that, The push-top protrusion is also provided with a first push-top plane and a second push-top plane; The push-pull slide plate slides along the Y direction. The first push-top plane and the second push-top plane are arranged in the plane formed by the Y direction and the Z direction. The first push-top plane and the second push-top plane are respectively connected to the two ends of the push-top inclined plane in the X direction, so that the X-axis slider forms two stable positions in the X direction, serving as the working position and the storage position.

4. The voice coil motor test fixture as described in claim 1, characterized in that, The push-pull slide plate is also provided with a third push-top surface and a fourth push-top surface; The third and fourth pushing surfaces are arranged in the plane formed by the Y and X directions, and the third and fourth pushing surfaces are respectively connected to the two ends of the Z-direction pushing slope, so that the push rod forms two stable positions in the Z direction, serving as the working position and the storage position.

5. The voice coil motor test fixture as described in claim 1, characterized in that, The front end of the product pressure plate is connected to a replaceable clamping plate, and the clamping plate is provided with a floating clamping plate to flexibly contact and clamp the voice coil motor under test.

6. The voice coil motor test fixture as described in any one of claims 1 to 5, characterized in that, The clamping operation component further includes: a self-locking quick clamp; The self-locking quick clamp is fixed on the base and is connected to the push-pull slide plate.

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