CN216900838U - Testing jig for voice coil motor - Google Patents

Abstract

The utility model provides a test fixture for a voice coil motor, which comprises a test component, a probe component and a laser test component, wherein the test component comprises a bottom plate and a placing seat arranged on the bottom plate; the top of the placing seat is provided with a placing position for placing a piece to be tested; the probe assembly is positioned around the placing seat and corresponds to the terminal pin on the side surface of the piece to be tested; the probe assembly is slidably arranged on the base plate through the base body so as to realize the electrical connection between the probe assembly and the piece to be tested; the laser testing component is arranged around the testing component; the laser testing component comprises a laser, wherein a laser emitting end of the laser is arranged on a lens mounted on a piece to be tested so as to monitor a working path of the lens mounted on the piece to be tested. The utility model can detect whether the component to be tested is a good product, avoids the defective product from entering the next assembly process, finds the defective product after the assembly is finished, and saves the assembly cost.

Description

Testing jig for voice coil motor

Technical Field

The utility model relates to the technical field of test fixtures, in particular to a test fixture for a voice coil motor.

Background

The frequency response analysis and test of internal faults of the existing finished products often happens badly, and partial models reach more than 10%. How to reduce the rate of defective products is crucial to improve the product competitiveness. The analysis shows that the poor feeding of the voice coil motor results in poor subsequent assembly.

In subsequent developments, single power-on tests were performed primarily manually with the aid of tools. However, in the process of mass production, a large amount of human resources are required to be consumed for detecting whether defective products exist by related technicians, so that the labor cost is increased, and meanwhile, the problem of error detection is easily caused, and the subsequent assembly is also poor.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages, an object of the present invention is to provide a testing fixture for a voice coil motor, so as to detect incoming materials before assembly, and avoid the occurrence of defects in finished products after assembly; meanwhile, the detection efficiency is improved.

The utility model provides a testing jig for a voice coil motor, which comprises:

the testing assembly comprises a bottom plate and a placing seat arranged on the bottom plate; the top of the placing seat is provided with a placing position for placing a piece to be tested;

the probe assembly is positioned around the placing seat and is arranged corresponding to the terminal pin on the side surface of the piece to be tested; the probe assembly is slidably mounted on the base plate through a base body so as to realize the electrical connection between the probe assembly and the piece to be tested;

the laser testing assembly is arranged around the testing assembly; the laser testing assembly comprises a laser, and a laser emitting end of the laser is arranged right opposite to the lens mounted on the piece to be tested so as to monitor a working path of the lens mounted on the piece to be tested.

Furthermore, the testing assembly further comprises a movement driving device arranged on the bottom plate, and the movement driving device comprises a driving assembly which is matched with the base body and is used for driving the base body to slide.

Furthermore, the driving assembly comprises a driving arm, a driving wheel and a first elastic piece; the driving wheel is arranged on the seat body, wherein the axis of the driving wheel is vertical to the upper surface of the bottom plate; the driving arm is slidably mounted on the upper surface of the base plate, wherein the sliding direction of the driving arm is perpendicular to that of the seat body; the driving arm comprises a connecting part and a driving part which are arranged at two ends of the driving arm, the driving part is provided with a driving inclined plane, the driving inclined plane is in sliding fit with the driving wheel, and the driving inclined plane and the driving wheel slide relatively by driving the driving arm to move, so that the seat body is pushed to move; the first elastic piece is arranged between the base body and the placing base.

Furthermore, the mobile driving device further comprises an installation block and a limiting piece fixed on the bottom plate, wherein the limiting piece is provided with a first limiting column and a second limiting column which are oppositely arranged, the installation block is positioned between the first limiting column and the second limiting column, and the second limiting column is positioned between the installation block and the placing seat; the mounting block is connected with the connecting part of the driving arm; and the mounting block is fixedly provided with a magnetic piece which is used for being mutually adsorbed with the limiting piece.

Furthermore, the two seat bodies and the two driving assemblies are respectively arranged on two sides of the placing seat in an opposite mode; the mobile driving device also comprises a connecting plate, and the driving arms in the two driving assemblies are connected together through the connecting plate; the connecting plate is fixedly connected with the mounting block.

Furthermore, the test assembly further comprises a placing and fixing device, wherein the placing and fixing device comprises a pressing plate and a lifting driving device for driving the pressing plate to lift; the pressing plate comprises a pressing portion and a fixedly connecting portion, the pressing portion is used for pressing the edge of the piece to be tested and is used for being connected with the lifting driving device, the pressing portion is located above the placing position, and the pressing portion corresponds to the placing position and is provided with an avoiding hole used for avoiding a lens mounted on the piece to be tested.

Furthermore, the lifting driving device comprises a fixed seat fixed on the bottom plate and a sliding rod arranged in the fixed seat, the bottom surface of the fixed seat is provided with a limiting hole, the bottom of the limiting hole is provided with a through hole penetrating through the top surface of the fixed seat, and the aperture of the limiting hole is larger than that of the through hole; a positioning sleeve is fixedly arranged in the through hole; the lower end of the sliding rod is provided with a limiting bump; the limiting lug is arranged in the limiting hole in a way of moving up and down, and the limiting lug is limited between the bottom of the limiting hole and the upper surface of the bottom plate; the upper end of the sliding rod penetrates through the positioning sleeve and then penetrates out of the through hole to be fixedly connected with the fixed connection part of the pressing plate;

the sliding rod is sleeved with a second elastic piece, and the lower end of the second elastic piece is abutted against the limiting lug; the upper end of the second elastic piece extends into the through hole to be abutted against the positioning sleeve.

Furthermore, the test fixture further comprises a frame, and the test component and the laser test component are both mounted on the frame.

Furthermore, the laser testing assembly further comprises an adjusting device for adjusting the position of the laser in a multi-direction mode, and the laser is mounted on the rack through the adjusting device.

Furthermore, the adjusting device comprises a first adjusting component for adjusting the vertical height of the laser and a second adjusting component for adjusting the horizontal position of the laser; the second adjusting component adjusts the laser machine in two directions, wherein the first direction is parallel to the laser beam emitting direction of the laser machine, and the second direction is perpendicular to the first direction.

The testing jig for the voice coil motor provided by the embodiment has the following technical effects or advantages:

one is as follows: the probe assembly can be slidably arranged on the bottom plate through the base body, and after the to-be-tested piece is arranged on the placing base, the probe assembly and the to-be-tested piece can be quickly switched on and off by moving the base body;

and the second step is as follows: the working path of the lens on the to-be-tested part is monitored through the laser and compared with the standard path, whether the to-be-tested part is a good product or not can be judged quickly, and the defective product is effectively prevented from entering the next assembling step, so that the defective product is caused after the assembling is finished;

and thirdly: the base body is further connected with a movement adjusting device, so that the driving base body can move more quickly, and the testing efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an overall structure of a conventional device under test and a lens;

fig. 2 is a schematic overall structure diagram of a testing fixture for a voice coil motor according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the test assembly and probe assembly of FIG. 2;

FIG. 4 is a schematic structural view of the probe assembly, the moving driving device, the placing base and the base in FIG. 2;

figure 5 is a schematic structural view of the drive arm of figure 2;

FIG. 6 is a schematic view of the placement base and the placement fixture of FIG. 2;

FIG. 7 is a cross-sectional view of the placement fixture of FIG. 2;

FIG. 8 is a schematic structural view of the frame and laser test assembly of FIG. 2;

fig. 9 is an exploded view of the laser test assembly of fig. 2.

In the figure, 10-test component, 11-bottom plate, 111-second waist-shaped hole, 12-placing seat, 121-placing position, 122-upper placing seat, 123-lower placing seat, 131-pressing plate, 131 a-pressing part, 131 b-fixing part, 132 a-fixing seat, 132 b-sliding rod, 132 c-sliding guide groove, 132 d-positioning sleeve, 132 e-limiting convex block, 132 f-second elastic part, 132 g-second handle, 21-probe component, 22-seat body, 30-laser test component, 31-laser, 321-vertical supporting plate, 321 a-sliding guide block, 322-horizontal supporting plate, 322 a-first sliding groove, 322 b-second sliding groove, 322 c-baffle, 331-fixing plate, 332-fine adjustment rod, 41-a driving assembly, 411-a driving arm, 411 a-a connecting part, 411 b-a driving part, 411 c-a driving inclined plane, 412-a driving wheel, 413-a first elastic part, 42-a connecting plate, 421-a first handle, 422-a fifth waist-shaped hole, 43-a mounting block, 431-a magnetic part, 441 and a first limiting column; 442. a second limit post; 451-slide rail, 452-slide block, 50-frame, 51-platform, 511-first waist-shaped hole, 52-side plate, 521-vertical adjusting hole, 522-guide chute, 91-voice coil motor and 92-lens.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Referring to fig. 1, fig. 1 is a schematic diagram of an overall structure of a conventional device under test and a lens 92. The test piece is Voice Coil Motor 91(Voice Coil Motor, abbreviated as VCM), and in order to analyze the internal fault frequency response of Voice Coil Motor 91, lens 92 is installed on Voice Coil Motor 91 in the present application, and the test principle is as follows: the lens 92 is driven to work through the voice coil motor 91, namely after the voice coil motor 91 is electrified, the magnetic field intensity and the direction are changed through the change of the current, so that the lens 92 is driven to move for focusing; then, in the moving process of the lens 92, the working path of the lens 92 is monitored by the laser 31 and compared with a preset standard path, that is, whether the voice coil motor 91 is good is judged by judging whether the offset distance after the lens 92 moves meets a preset requirement.

Referring to fig. 2 to 9, an embodiment of the utility model provides a testing fixture for a voice coil motor, including a testing component 10, a probe component 21 and a laser testing component 30, where the testing component 10 includes a bottom plate 11 and a placing seat 12 disposed on the bottom plate 11, a placing position 121 for placing a to-be-tested piece is disposed on a top of the placing seat 12, where the placing position 121 is a placing groove, it is required that after the voice coil motor 91 is placed at the placing position 121, an axis of the voice coil motor 91 is perpendicular to an upper surface of the bottom plate 11, and the probe component 21 can be electrically connected to a terminal pin on a side surface of the voice coil motor 91.

As an alternative embodiment, referring to fig. 6, the placing base 12 may be divided into an upper placing base 122 and a lower placing base 123, and the upper placing base 122 and the lower placing base 123 are detachably connected to facilitate replacing different types of upper placing bases 122, so as to install different types of voice coil motors 91, thereby implementing testing different types of voice coil motors 91.

In order to stably fix the test piece to be tested at the placing position 121 of the placing base 12, referring to fig. 3, the testing assembly 10 further includes a placing fixture including a pressing plate 131 and a lifting driving device for driving the pressing plate 131 to be lifted.

Referring to fig. 6, the pressing plate 131 includes a pressing portion 131a and a fixing portion 131b for connecting the lifting driving device, the pressing portion 131a is located above the placing position 121, and the pressing portion 131a is provided with an avoiding hole for avoiding the lens 92 corresponding to the placing position 121. After the voice coil motor 91 is placed at the placing position 121, the pressing portion 131a is sleeved outside the lens 92, a portion of the pressing portion 131a around the avoiding hole presses the voice coil motor 91, the lens 92 mounted on the voice coil motor 91 penetrates out of the avoiding hole, and the depth of the avoiding hole needs to meet the following requirement, that is, in the process of driving the lens 92 by the voice coil motor 91 to perform focusing, the laser beam emitted by the laser 31 can always strike the lens 92.

Specifically, in the present embodiment, the pressing plate 131 is approximately "L" shaped, one end of the pressing portion 131a is fixedly disposed on the side surface of the fixing portion 131b, and the pressing portion 131a and the side surface of the fixing portion 131b are in concave-convex matching positioning connection; the other end of the pressing portion 131a is positioned above the placing position 121; here, the reason why the thickness of one end of the pressing portion 131a close to the fixing portion 131b is larger than that of the other end of the pressing portion 131a far from the fixing portion 131b is to satisfy the requirement of the depth of the escape hole while the pressing portion 131a is fixed.

The elevation driving device may be an automatic elevation driving device using a power source such as an electric push rod, an air cylinder, or a motor, or may be a manual elevation driving device using a force applied by a hand as a power source. In the present embodiment, the lifting drive device is a manual lifting drive device.

Referring to fig. 7, the lifting driving device includes a fixing seat 132a fixed on the upper surface of the bottom plate 11 and a sliding rod 132b penetrating the fixing seat 132a, a limiting hole is formed on the bottom surface of the fixing seat 132a, a through hole penetrating the top surface of the fixing seat 132a is formed at the bottom of the limiting hole, and the aperture of the limiting hole is larger than that of the through hole; a positioning sleeve 132d is fixedly arranged in the through hole; the lower end of the sliding rod 132b is provided with a limit bump 132 e; the limiting lug 132e is arranged in the limiting hole in a way of moving up and down, and the limiting lug 132e is limited between the bottom of the limiting hole and the upper surface of the bottom plate 11; the upper end of the sliding rod 132b penetrates through the positioning sleeve and then penetrates out of the through hole to be fixedly connected with the fixed connection part 131b of the pressing plate 131. When the sliding rod 132b is pulled upwards, the bottom of the limiting hole abuts against the limiting bump 132e to stop the sliding rod 132 from moving upwards, and when the sliding rod 132b slides downwards, the fixing portion 131b of the pressing plate 131 abuts against the top surface of the fixing seat 132a to stop the sliding rod 132 from sliding downwards.

Continuing to fig. 7, the sliding rod 132b is sleeved with a second elastic member 132f, and the lower end of the second elastic member 132f abuts against the limit bump 132 e; the upper end of the second elastic element 132f extends into the through hole to abut against the positioning sleeve 132 d; when a to-be-tested piece is to be placed, the pressure plate 131 needs to be lifted first, the sliding rod 132b moves upwards at the moment, the second elastic piece 132f is compressed, so that the to-be-tested piece can be placed on the placing seat 12, then the pressure plate 131 falls, the sliding rod 132b moves downwards at the moment, the second elastic piece 132f begins to reset, and the to-be-tested piece has a certain height, so that when the pressure plate 131 is pressed on the to-be-tested piece, the second elastic piece 132f is still in a compressed state, and the to-be-tested piece can be fixed between the pressure plate 131 and the placing seat 12 by utilizing the downward acting force of the second elastic piece 132f on the limiting lug 132 e.

In this embodiment, referring to fig. 7, in order to lift the pressing plate 131 more conveniently, the pressing plate 131 is provided with a second handle 132g, and specifically, after the sliding rod 132b is fixedly connected with the fixedly connecting portion 131b of the pressing plate 131, the upper end of the sliding rod 132b penetrates through the fixedly connecting portion 131b and is fixedly connected with the second handle 132 g.

In this embodiment, referring to fig. 7, in order to make the up-and-down movement of the pressing plate 131 more stable, a sliding guide groove 132c is formed in the top surface of the fixing seat 132a, and the sliding guide groove 132c penetrates through the fixing seat 132a along the length direction of the fixing connection portion 131 b; the sliding guide groove 132c is slidably connected with the fixed connection part 131b of the pressure plate 131; during the up-and-down movement of the pressure plate 131, the fastening portion 131b of the pressure plate 131 can move up and down in the slide guide groove 132 c.

In this embodiment, referring to fig. 7, in order to facilitate the installation of the positioning sleeve 132d, the through hole is inwardly shrunk to form a limiting step, the positioning sleeve 132d is disposed in the through hole, and the lower end of the positioning sleeve 132d abuts against the limiting step.

Referring to fig. 3, the probe assemblies 21 are located around the placing base 12, the probe assemblies 21 are arranged corresponding to the terminal pins on the side of the piece to be tested, that is, the number and the positions of the probe assemblies 21 are arranged according to the terminal pins on the side of the voice coil motor 91; the probe assembly 21 is slidably mounted on the base plate 11 through the base 22 to electrically connect the probe assembly 21 with a test object; specifically, the probe assembly 21 is fixedly disposed on the top of the seat 22, and the bottom of the seat 22 is slidably disposed on the bottom plate 11.

The base 22 is pushed to move, so that the probe assembly 21 is controlled to be close to the placing base 12, and the electrical connection between the probe assembly 21 and the to-be-tested piece is realized, that is, when the to-be-tested piece is placed in the placing position 121, the base 22 is pushed to move towards the placing base 12, so that the probes (not shown) in the probe assembly 21 are in contact communication with the terminal pins of the to-be-tested piece, and the electrical connection between the probe assembly 21 and the to-be-tested piece is realized. After the test of the to-be-tested piece is completed, the to-be-tested piece can move towards the direction departing from the placing seat 12 through the seat body 22, so that the probe can be conveniently pulled out of the terminal pin, and the operation is more convenient and quicker.

Specifically, for the convenience of driving the seat 22, referring to fig. 3, the testing assembly 10 further includes a movement driving device disposed on the bottom plate 11, where the movement driving device may be an automatic movement driving device using a power source such as an electric push rod, an air cylinder, or a motor to drive the seat 22 to slide, or a manual movement driving device using a force applied by a hand as a power source to drive the seat 22 to slide, and specifically, in this embodiment, the movement driving device is a manual movement driving device.

The movement driving device includes a driving component 41 configured to match the seat 22 for driving the seat 22 to slide. Referring to fig. 3 and 4, the driving assembly 41 includes a driving arm 411, a driving wheel 412 and a first elastic member 413.

Continuing with fig. 4, the driving wheel 412 is mounted on the base 22, wherein the axis of the driving wheel 412 is perpendicular to the upper surface of the bottom plate 11; the driving arm 411 is slidably mounted on the upper surface of the base plate 11, and the sliding direction of the driving arm is perpendicular to that of the seat body; the driving arm 411 (see fig. 5) includes a connecting portion 411a and a driving portion 411b disposed at two ends of the driving arm 411, wherein the connecting portion 411a is located at one end far away from the placing base 12, and the driving portion 411b is located at one end close to the placing base 12.

The driving portion 411b is provided with a driving slope 411c, and specifically, as shown in fig. 5, a side of the driving portion 411b facing the driving wheel 412 has a driving slope 411c, one end of the driving slope 411c away from the connecting portion 411a is close to the driving wheel 412, and the other end of the driving slope 411c away from the driving wheel 412; the driving inclined surface 411c is slidably attached to the driving wheel 412, and when one end of the driving inclined surface 411c away from the connecting portion 411a is attached to the driving wheel 412, the seat body 22 is closest to the placing seat 12. When the end of the driving inclined surface 411c close to the connecting portion 411a is engaged with the driving wheel 412, the seat body 22 is farthest away from the placing seat 12. That is, when the driving arm 411 is pushed to move along the setting direction of the driving arm 411, the driving inclined surface 411c slides relative to the driving wheel 412, so as to push the base body 22 to move toward the placing base 12, and change the distance between the base body 22 and the placing base 12, thereby allowing the probe assembly 21 to contact and communicate with the terminal pins on the side of the vcm 91.

Continuing with fig. 4, the first elastic element 413 is disposed between the seat body 22 and the placing seat 12, and after the seat body 22 is pushed to move toward the placing seat 12, the first elastic element 413 is compressed, so that after the pushing force applied on the seat body 22 is removed, the seat body 22 can move away from the placing seat 12 under the action of the first elastic element 413, and the seat body 22 is reset; specifically, one end of the first elastic element 413 is fixed on the side of the seat body 22 facing the placing seat 12, the other end of the first elastic element 413 faces the side of the placing seat 12 facing the seat body 22, and a receiving hole for receiving the end of the first elastic element 413 is opened on the side of the placing seat 12 facing the seat body 22. Preferably, the first elastic member 413 is a spring.

Continuing with fig. 4, in order to limit the movement of the seat 22, the movement driving device further includes a mounting block 43 and a limiting member fixed on the bottom plate 11, the limiting member has a first limiting post 441 and a second limiting post 442 which are oppositely disposed, specifically, the limiting member includes a first limiting post 441, a second limiting post 442 and a limiting connecting plate connected between the first limiting post 441 and the second limiting post 442, and the limiting connecting plate is fixedly disposed on the upper surface of the bottom plate 11; the mounting block 43 is located between the first position-limiting column 441 and the second position-limiting column 442, and the second position-limiting column 442 is located between the mounting block 43 and the placing base 12; the mounting block 43 is connected to the connecting portion 411a of the driving arm 411; the mounting block 43 can move between the first and second position-limiting columns 441 and 442 under the driving of the driving arm 411.

When the base 22 moves to the position where the probe assembly 21 contacts and communicates with the terminal pins on the side of the voice coil motor 91, the mounting block 43 abuts against the second position-limiting pillar 442, so as to limit the movement of the base 22 in the direction approaching the placing base 12; when the base 22 moves to the position where the probe assembly 21 is completely separated from the terminal pins of the voice coil motor 91, the mounting block 43 abuts against the first position-limiting post 441, so as to limit the movement of the base 22 away from the placing base 12.

Continuing with fig. 4, in order to prevent the seat body 22 from moving after moving to the right position, the mounting block 43 is provided with a magnetic member 431, the magnetic member 431 and the limiting member are mutually attracted, and after the seat body 22 moves to the right position, the seat body 22 is positioned, so that it is ensured that the seat body 22 does not move during the test process of the to-be-tested piece, and the test effect is not influenced. Specifically, the mounting block 43 is provided with magnetic members 431 on two side surfaces respectively corresponding to the first and second position-limiting columns 441 and 442.

In this embodiment, when the mounting block 43 is attached to the first position-limiting post 441, the distance between the mounting block 43 and the placing base 12 is the farthest, one end of the driving inclined surface 411c away from the connecting portion 411a is attached to the driving wheel 412, and the base 22 is the closest to the placing base 12. When the mounting block 43 is engaged with the second position-limiting post 442, the mounting block 43 is closest to the placing base 12, one end of the driving inclined surface 411c close to the connecting portion 411a is engaged with the driving wheel 412, and the base 22 is farthest from the placing base 12. That is, in the process of moving the mounting block 43 from the first position-limiting post 441 to the second position-limiting post 442, the mounting block 43 gradually approaches the placing base 12, and the base 22 gradually moves away from the placing base 12.

More specifically, two seats 22 and two driving assemblies 41 are provided, which are respectively oppositely disposed on two sides of the placing seat 12. In order to realize linkage of the two sets of driving assemblies 41, continuing to fig. 4, the mobile driving device further includes a connecting plate 42, the driving arms 411 of the two sets of driving assemblies 41 are respectively connected to two ends of the connecting plate 42, the connecting plate 42 is fixedly arranged above the mounting block 43, specifically, a fifth screw hole is formed on a connecting portion 411a on the side surface of the driving arm 411, a fifth waist-shaped hole 422 is formed on the connecting plate 42 corresponding to the fifth screw hole, wherein the length direction of the fifth waist-shaped hole 422 is parallel to the sliding direction of the seat body 22; the connecting portion 411a of the driving arm 411 is fixedly connected to the connecting plate 42 by a fifth screw passing through the fifth waist-shaped hole 422 and then screwing into the fifth screw hole.

The connecting plate 42 is pushed or pulled to simultaneously control the driving arms 411 of the two sets of driving assemblies 41 to move, so as to control the distance between the two seat bodies 22 and the placing seat 12. It should be mentioned that the connecting plate 42 may be further configured with a first handle 421, and the operation is more convenient by pushing or pulling the connecting plate 42 through the first handle 421. In the present embodiment, the two base bodies 22 are provided with the probe assemblies 21, and the two sets of probe assemblies 21 can be controlled to approach or depart from the test object by pushing or pulling. Of course, it is also possible that one of the two seat bodies 22 is provided with the probe assembly 21, and only one side surface of the to-be-tested device has the terminal pins.

Referring to fig. 4 again, sliding assemblies are disposed between the seat body 22 and the bottom plate 11 and between the mounting block 43 and the bottom plate 11, and each sliding assembly includes a sliding rail 451 and a sliding block 452 sliding on the sliding rail 451. The slide rail 451 between the base 22 and the bottom plate 11 and the slide rail 451 between the mounting block and the bottom plate 11 are perpendicular to each other.

In the present embodiment, referring to fig. 1, the test fixture further includes a frame 50, and the test module 10 is mounted on the frame 50. Specifically, frame 50 includes platform 51, and test assembly 10 sets up on platform 51, and platform 51 is the rectangle, and the mode that passes behind second waist shape hole 111 through the second screw between platform 51 and the bottom plate 11 among the test assembly 10 and twist the second screw hole links firmly, and wherein second waist shape hole 111 sets up on bottom plate 11, and the length direction in second waist shape hole 111 is parallel to each other with the slip direction of pedestal 22, and the second screw hole sets up on platform 51. The relative position of the bottom plate 11 and the platform 51 can be adjusted along the length direction of the second waist-shaped hole 111 according to requirements.

Referring to fig. 1, the laser test assembly 30 is disposed around the test assembly 10 and is capable of monitoring the working path of the lens 92 from multiple directions. The laser testing assembly 30 is mounted on the rack, specifically, the rack further comprises a side plate 52 fixedly arranged at the bottom of the platform 51, the laser testing assembly 30 is mounted on the side plate 52, the platform 51 and the side plate 52 are fixedly connected in a mode that a first screw penetrates through a first waist-shaped hole 511 and then is screwed into the first screw hole, wherein the first waist-shaped hole 511 is formed in the platform 51, the length direction of the first waist-shaped hole 511 is parallel to the placing direction of the side plate 52, and the first screw hole is formed in the top surface of the side plate 52; the relative position of the platform 51 and the side plate 52 can be adjusted along the length direction of the first waist-shaped hole 511 as required.

In the embodiment, referring to fig. 8, two sets of laser test assemblies 30 are provided, and the directions monitored by the two sets of laser test assemblies 30 are perpendicular to each other, that is, the two sets of laser test assemblies 30 are respectively mounted on two side plates 52 which are vertically arranged on the rack.

The laser test assembly 30 includes a laser 31, and a laser emitting end of the laser 31 is disposed on a lens 92 mounted on a piece to be tested to monitor a working path of the lens 92 mounted on the piece to be tested. Specifically, the laser 31 is internally provided with a laser transmitter (not shown) and a laser receiver (not shown), and a laser emitting port (not shown) and a laser receiving port (not shown) are correspondingly formed on a surface close to the placing base 12. The laser beam emitted by the laser emitter is emitted from the laser emitting port to the lens 92, and the laser beam is reflected by the lens 92 and then received by the laser receiver from the laser receiving port, so that the distance test of the laser 31 is completed. When the lens 92 is driven by the vcm 91 and then shifted, the distance measured by the laser 31 changes, and whether the vcm 91 is good is determined according to whether the distance change meets the predetermined requirement.

Referring to fig. 8 and 9, the laser test assembly 30 further includes an adjusting device for multi-directionally adjusting the position of the laser 31, and the laser 31 is mounted on the frame 50 through the adjusting device.

Specifically, the adjusting device comprises a first adjusting component for adjusting the vertical height of the laser 31 and a second adjusting component for adjusting the horizontal position of the laser 31; specifically, in the present embodiment, the second adjusting component adjusts the laser machine 31 in two directions, wherein the first direction is parallel to the laser beam emitting direction of the laser machine 31, and the second direction is perpendicular to the first direction.

Continuing to fig. 8 and 9, the first adjusting assembly includes a vertical supporting plate 321, a third screw hole disposed on the vertical supporting plate 321, and a vertical adjusting hole 521 disposed on the side plate 52, and the vertical supporting plate 321 and the side plate 52 are fixedly connected by a way that the third screw passes through the vertical adjusting hole 521 and then is screwed into the third screw hole; the relative positions of the vertical support plate 321 and the side plate 52 can be adjusted along the vertical adjustment hole 521 as required. In order to make the adjustment of the vertical support plate 321 more stable, a guide slider 321a is fixed on the vertical support plate 321, and a guide chute 522 slidably engaged with the guide slider 321a is disposed on the side plate 52.

Continuing to fig. 9, the second adjusting assembly includes a horizontal supporting plate 322, a connecting hole formed on the laser 31, and a fourth screw hole formed on the top surface of the vertical supporting plate 321, the horizontal supporting plate 322 is provided with a first sliding slot 322a and a second sliding slot 322b, and the length direction of the first sliding slot 322a is the second direction; the length direction of the second sliding chute 322b is a first direction; the vertical supporting plate 321 is fixedly connected with the horizontal supporting plate 322 in a manner that a fourth screw penetrates through the first sliding groove 322a and then is screwed into a fourth screw hole; the laser 31 and the horizontal support plate 322 are fixedly connected with each other by a bolt which passes through the second sliding groove 322b and the connecting hole and then is connected with a nut, and specifically, the nut is a butterfly nut. The relative position of the horizontal support plate 322 and the vertical support plate 321 can be adjusted along the first sliding groove 322a as required, and the relative position of the horizontal support plate 322 and the laser 31 can be adjusted as required.

Further, in order to realize fine adjustment for the adjusting device, see fig. 8, be provided with the first fine setting subassembly that finely tunes vertical support plate 321 in the frame, be provided with the second fine setting subassembly that finely tunes along first spout 322a direction to horizontal support plate 322 on the horizontal support plate 322, carry out the third fine setting subassembly that finely tunes along second spout 322b direction to laser instrument 31, first fine setting subassembly, second fine setting subassembly and third fine setting subassembly all include fixed plate 331 and set firmly fine setting pole 332 on fixed plate 331, when needs fine setting, it can to twist fine setting pole 332. Specifically, in the present embodiment, the side plates 52, the side surfaces of the horizontal support plate 322 and the upper surface of the horizontal support plate 322 are respectively and fixedly provided with a fixing plate 331, and each fixing plate 331 is in threaded connection with a fine adjustment rod 332.

It is worth mentioning that two baffle plates 322c are arranged on the horizontal support plate 322 along the first sliding groove 322a, the two baffle plates 322c are respectively located at two sides of the laser 31, a guide channel for guiding the movement of the laser 31 is formed between the two baffle plates 322c, and when the position of the laser 31 is adjusted along the second sliding groove 322b, the laser 31 moves more stably under the action of the guide channel.

The testing jig for the voice coil motor provided by the embodiment comprises a testing component 10, a probe component 21 and a laser testing component 30, wherein the voice coil motor 91 is fixed on a placing seat 12 of the testing component 10, a laser 31 on the laser testing component 30 just faces to a lens 92 on the voice coil motor 91 to emit laser beams, the probe component 21 installed on a seat body in the testing component 10 is electrified with a to-be-tested piece, and the voice coil motor 91 drives the lens 92 to focus after the electrification; then, in the process of moving the lens 92, the working path of the lens 92 is monitored through the laser 31 and compared with the standard path, so that whether the working path is qualified or not can be judged, and the testing speed is high and the testing precision is high. The utility model can detect whether the component to be tested is a good product, avoids the defective product from entering the next assembly process, generates the defective product after the assembly is finished, and saves the assembly cost.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides a test fixture for voice coil motor which characterized in that includes:

the testing assembly (10) comprises a bottom plate (11) and a placing seat (12) arranged on the bottom plate (11); the top of the placing seat (12) is provided with a placing position (121) for placing a piece to be tested;

the probe assembly (21), the probe assembly (21) is positioned around the placing seat (12), and the probe assembly (21) is arranged corresponding to the terminal pin on the side surface of the piece to be tested; the probe assembly (21) is slidably mounted on the base plate (11) through a seat body (22) so as to realize the electrical connection between the probe assembly (21) and the piece to be tested;

a laser testing assembly (30), the laser testing assembly (30) being disposed around the testing assembly (10); the laser testing component (30) comprises a laser (31), wherein the laser emitting end of the laser (31) is opposite to the lens (92) mounted on the piece to be tested, so that the working path of the lens (92) mounted on the piece to be tested is monitored.

2. The testing fixture for the voice coil motor according to claim 1, wherein the testing assembly (10) further comprises a movement driving device disposed on the bottom plate (11), the movement driving device comprises a driving assembly (41) configured to match the housing (22) for driving the housing (22) to slide.

3. The testing fixture for the voice coil motor according to claim 2, wherein the driving assembly (41) comprises a driving arm (411), a driving wheel (412) and a first elastic member (413); the driving wheel (412) is installed on the seat body (22), wherein the axis of the driving wheel (412) is perpendicular to the upper surface of the bottom plate (11); the driving arm (411) is slidably mounted on the upper surface of the base plate (11), and the sliding direction of the driving arm is perpendicular to that of the seat body; the driving arm (411) comprises a connecting part (411a) and a driving part (411b) which are arranged at two ends of the driving arm (411), the driving part (411b) is provided with a driving inclined plane (411c), the driving inclined plane (411c) is in sliding fit with the driving wheel (412), and the driving arm (411) is driven to move so that the driving inclined plane (411c) and the driving wheel (412) slide relatively, and the seat body (22) is pushed to move;

the first elastic piece (413) is arranged between the base body (22) and the placing base (12).

4. The testing fixture for the voice coil motor according to claim 3, wherein the moving driving device further comprises a mounting block (43) and a limiting member fixed on the bottom plate (11), the limiting member has a first limiting post (441) and a second limiting post (442) oppositely disposed, the mounting block (43) is located between the first limiting post (441) and the second limiting post (442), and the second limiting post (442) is located between the mounting block (43) and the placing base (12); the mounting block (43) is connected with a connecting part (411a) of the driving arm (411); and a magnetic part (431) which is mutually adsorbed with the limiting part is fixedly arranged on the mounting block (43).

5. The testing fixture for the voice coil motor according to claim 4, wherein two of the seat body (22) and two of the driving components (41) are respectively oppositely disposed on two sides of the placing seat (12); the movement driving device also comprises a connecting plate (42), and the driving arms (411) in the two driving assemblies are connected together through the connecting plate (42); the connecting plate (42) is fixedly connected with the mounting block (43).

6. The testing fixture for the voice coil motor according to claim 1, wherein the testing assembly (10) further comprises a placing and fixing device, the placing and fixing device comprises a pressing plate (131) and a lifting driving device for driving the pressing plate (131) to lift; the pressing plate (131) comprises a pressing portion (131a) used for pressing the edge of the piece to be tested and a fixing portion (131b) used for connecting the lifting driving device, the pressing portion (131a) is located above the placing position (121), and the pressing portion (131a) corresponds to the placing position (121) and is provided with an avoiding hole used for avoiding a lens (92) installed on the piece to be tested.

7. The testing fixture for the voice coil motor according to claim 6, wherein the lifting driving device includes a fixing seat (132a) fixed to the bottom plate (11) and a sliding rod (132b) disposed inside the fixing seat (132a), a limiting hole is formed in a bottom surface of the fixing seat (132a), a through hole penetrating through a top surface of the fixing seat (132a) is formed in a bottom of the limiting hole, and an aperture of the limiting hole is larger than an aperture of the through hole; a positioning sleeve (132d) is fixedly arranged in the through hole; the lower end of the sliding rod (132b) is provided with a limiting lug (132 e); the limiting lug (132e) is arranged in the limiting hole in a way of moving up and down, and the limiting lug (132e) is limited between the hole bottom of the limiting hole and the upper surface of the bottom plate (11); the upper end of the sliding rod (132b) penetrates through the positioning sleeve and then penetrates out of the through hole to be fixedly connected with a fixedly connecting part (131b) of the pressing plate (131);

a second elastic piece (132f) is sleeved on the sliding rod (132b), and the lower end of the second elastic piece (132f) is abutted against the limiting lug (132 e); the upper end of the second elastic piece (132f) extends into the through hole to be abutted against the positioning sleeve (132 d).

8. The testing fixture for the voice coil motor according to claim 1, further comprising a frame (50), wherein the testing component (10) and the laser testing component (30) are both mounted on the frame (50).

9. The testing fixture for the voice coil motor according to claim 8, wherein the laser testing assembly (30) further comprises an adjusting device for multi-directionally adjusting the position of the laser (31), and the laser (31) is mounted on the frame (50) through the adjusting device.

10. The testing jig for the voice coil motor according to claim 9, wherein the adjusting device comprises a first adjusting component for adjusting the vertical height of the laser (31) and a second adjusting component for adjusting the horizontal position of the laser (31); the second adjusting component adjusts the laser (31) in two directions, wherein the first direction is parallel to the laser beam emitting direction of the laser (31), and the second direction is perpendicular to the first direction.

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