Test die for base support and lens support of voice coil motor of camera

Abstract

The utility model discloses a test die for a base support and a lens support of a voice coil motor of a camera, the test die for the base support of the voice coil motor of the camera comprises a bottom plate, and the bottom plate is matched with a frame of the base support of the voice coil motor in shape and size; the boss is arranged on the bottom plate, the surface, deviating from the bottom plate, of the boss is provided with a first groove and a second groove which are arranged in the first direction, the first groove is matched with a chip mounting groove of the voice coil motor in shape and size, and the second groove is matched with the chip mounting groove of the voice coil motor in shape and size. The second groove is matched with a flexible circuit board mounting groove in the surface of the voice coil motor in shape and size, a first side wall of the boss is provided with a first extending part, and the first side wall is parallel to the first direction; the shape and the size of the first extension part are matched with the shape and the size of the side flexible circuit board of the base support of the voice coil motor, so that the waste of products is avoided, the number of bad scraped products is reduced, and the efficiency of the whole production process is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cameras, in particular to a test mold for a base support of a voice coil motor of a camera and a lens support. BACKGROUND

[0002] In a camera, a VCM (Voice Coil Motor), that is, a voice coil motor, is a device for converting electric energy into mechanical energy, and is mainly used for driving a lens to perform automatic focusing and optical anti-shake operations.

[0003] In the automated production process of the voice coil motor of the camera, the voice coil motor is composed of a plurality of different parts, and each part will flow through different processes for machining, testing, inspection and the like, and then be assembled together. In these different processes, the base support and the lens support of the voice coil motor usually need to be tested before machining to determine whether the clamping and placing positions of the clamping jaws of the corresponding process equipment are accurate when clamping and placing the corresponding products.

[0004] The conventional operation is to observe with the naked eye or confirm by experience, but the naked eye observation and the past experience confirmation cannot achieve ideal result data, and therefore in some cases, products in the production process are used as products placed in the equipment for debugging, but placing the products in the production process in the corresponding position of the equipment for testing causes great waste, and if the equipment debugging is not stable, many products need to be used for continuing the debugging of the equipment, and the appearance and function of the products after debugging may be damaged, resulting in defective scrap products, thereby increasing the product scrap rate and cost. Invention content

[0005] The application discloses a test mold for a base support of a voice coil motor of a camera and a lens support, which can avoid product waste, can perform multiple test adjustments on the equipment, and then perform formal product assembly, thereby reducing the number of defective scrap products caused by testing, reducing subsequent assembly process rework, and improving the efficiency of the entire production process.

[0006] In order to achieve the above-mentioned purpose, the application discloses a test mold for a base support of a voice coil motor of a camera, comprising:

[0007] A bottom plate matched with the shape and size of the frame of the base support of the voice coil motor;

[0008] A boss is arranged on the bottom plate, a surface of the boss away from the bottom plate is provided with a first groove and a second groove arranged along a first direction, the first groove is matched with the shape and size of the chip mounting groove of the voice coil motor, the second groove is matched with the shape and size of the surface flexible circuit board mounting groove of the voice coil motor, a first side wall of the boss is provided with a first extension, the first side wall is parallel to the first direction, and the first extension is matched with the shape and size of the side flexible circuit board of the base support of the voice coil motor.

[0009] In a possible implementation, the boss includes a first boss and a second boss arranged along the first direction, the first boss is a rectangular boss, and the second boss is a trapezoidal boss, the first groove is arranged on the first boss, and the second groove is arranged on the second boss.

[0010] In a possible implementation, a side of the second groove away from the first groove is through the side wall of the trapezoidal boss.

[0011] In a possible implementation, a bottom side of the trapezoidal boss is smaller in size than a long side of the rectangular boss, and the bottom side of the trapezoidal boss is connected to the long side of the rectangular boss in a circular arc transition manner.

[0012] In a possible implementation, the first groove is a rectangular groove, the groove side walls of the first groove are connected through chamfering, the second groove is a U-shaped groove, and the groove side walls of the second groove are connected through round chamfering.

[0013] In a possible implementation, the first extension includes a rectangular plate body, and a third groove is arranged at a connection position between the rectangular plate body and the first side wall.

[0014] The application further discloses a test mold of a lens support of a voice coil motor of a camera, including a mold body, an outer peripheral size of the mold body is matched with the shape and size of a frame of the lens support of the voice coil motor of the camera, and a surface of the mold body is provided with a positioning hole matched with the shape and size of a thimble hole of the lens support of the voice coil motor.

[0015] In a possible implementation, the mold body is a rectangular structure, and the positioning hole includes a plurality of positioning holes arranged at vertex edges of the rectangular structure.

[0016] In one possible implementation, the mold body further includes adjacent third and fourth side walls, the length of the third side wall being smaller than that of the fourth side wall, a third boss being provided on the middle portion of the third side wall, and a second extension being provided on the fourth side wall near the third side wall, the second extension matching the shape and size of the flexible circuit board on the side of the lens holder of the voice coil motor.

[0017] In one possible implementation, the second extension portion includes a rectangular plate body, and a fourth groove is provided at a connection between the rectangular plate body and the fourth side wall.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] In the test mold of the base bracket and lens bracket of the voice coil motor of the camera provided in the present application, by matching the various parts of the corresponding test mold with the shapes and sizes of the key parts of the base bracket and lens bracket of the voice coil motor, the actual assembly and working conditions can be truly simulated, so the performance indicators of the equipment corresponding to the base bracket and lens bracket processes can be more accurately detected. Traditional testing may require repeated debugging using manufactured products, which can easily cause damage to the appearance and function of the product and increase the scrap rate. However, using the test mold of the present application, testing can be carried out without using finished or semi-finished products, avoiding product waste. At the same time, multiple test adjustments can be made on the equipment before formal product assembly, reducing the number of defective scrap products caused by testing, reducing the rework of subsequent assembly processes caused by quality problems of the base bracket and lens bracket, and improving the efficiency of the entire production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a test mold for a base bracket of a voice coil motor of a camera provided by an embodiment of the present utility model;

[0022] Figure 2 A second structural diagram of a test mold for a base bracket of a voice coil motor of a camera provided by an embodiment of the present utility model;

[0023] Figure 3 A third structural diagram of a test mold for a base bracket of a voice coil motor of a camera provided by an embodiment of the present utility model;

[0024] Figure 4 Figure 1 is a structural schematic diagram of a test mold of a lens holder of a voice coil motor of a camera according to an embodiment of the present application;

[0025] Figure 5 Figure 2 is another structural schematic diagram of a test mold of a lens holder of a voice coil motor of a camera according to an embodiment of the present application.

[0026] Legend:

[0027] 10-bottom plate; 20-boss; 21-first groove; 22-second groove; 23-first side wall; 231-first extension; 2311-third groove; 24-first boss; 25-second boss;

[0028] 30-mold body; 31-positioning hole; 32-third side wall; 321-third boss; 33-fourth side wall; 331-second extension; 3311-fourth groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] In the present application, the terms "mount", "set", "provided with", "connected", and "linked" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0032] In the camera, VCM (Voice Coil Motor) is a device that converts electrical energy into mechanical energy, mainly used to drive the lens to perform automatic focusing and optical anti-shake operations.

[0033] In the automated production process of the voice coil motor of the camera, the voice coil motor is composed of a plurality of different parts, each part will flow through different processes for processing, testing, inspection, etc., and finally assembled together. In these different process procedures, the base support and lens support of the voice coil motor usually need to be tested before processing. The corresponding process equipment is tested to determine whether the corresponding product is accurately clamped and placed by the clamping jaw of the corresponding process equipment.

[0034] The conventional operation is observed by the naked eye or confirmed by experience, but the naked eye observation and the past experience confirmation cannot achieve ideal result data, so in some cases, the products in the production process are used as the products placed in the equipment for debugging. However, placing the products in the production process in the corresponding position of the equipment for testing will cause great waste. If the equipment debugging is not stable, many products will be needed to continue debugging the equipment. The appearance and function of the debugged products may be damaged, becoming defective and scrapped products, increasing the product scrap rate and cost.

[0035] In view of this point, some embodiments of the present application provide a test mold for the base support and lens support of the voice coil motor of the camera, which can avoid waste of products, and can perform multiple test adjustments on the equipment, and then perform formal product assembly, thereby reducing the number of defective and scrapped products caused by testing, reducing the subsequent assembly process rework, and improving the efficiency of the entire production process.

[0036] The present application will be described in detail below through specific embodiments:

[0037] The test mold for the base support of the voice coil motor of the camera according to the embodiments of the present application, as shown in Figures 1-3 , comprises:

[0038] A bottom plate 10, the shape and size of the bottom plate 10 match those of the frame of the base support of the voice coil motor;

[0039] A boss 20 is arranged on the bottom plate 10, the surface of the boss 20 away from the bottom plate 10 is provided with a first groove 21 and a second groove 22 arranged along a first direction, the first groove 21 matches the shape and size of the chip mounting groove of the voice coil motor, the second groove 22 matches the shape and size of the surface flexible printed circuit board mounting groove of the voice coil motor, a first side wall 23 of the boss 20 is provided with a first extension 231, the first side wall 23 is parallel to the first direction, and the first extension 231 matches the shape and size of the side flexible printed circuit board of the base support of the voice coil motor.

[0040] In a test mold for a camera voice coil motor base bracket provided by an embodiment of the present application, the shape and size of the base plate 10 matches the frame of the voice coil motor base bracket, accurately simulating the outer contour of the base bracket, ensuring that the test mold can be placed in the corresponding installation position in the device and ensuring the accuracy of the clamping position of the device during testing. The first groove 21 and the second groove 22 of the boss 20 respectively match the chip mounting slot and the surface flexible circuit board mounting slot, allowing the test mold to simulate the structural features of the actual chip mounting slot and surface flexible circuit board mounting slot during testing. The first extension 231 matches the shape and size of the side flexible circuit board, simulating the assembly position and size of the side flexible circuit board. This allows the test mold to simulate the force and balance of the product under actual working conditions during testing, ensuring that the clamping force during the device clamping and placement is more consistent with real working conditions, further improving the accuracy of the test.

[0041] This application can truly simulate the actual assembly and working conditions, so it can more accurately detect the performance indicators of the equipment corresponding to the base bracket process. Traditional testing may require repeated debugging using manufactured products, which can easily cause damage to the product appearance and function, and increase the scrap rate. However, using the test mold of this application, testing can be carried out without using finished or semi-finished products, avoiding product waste. At the same time, multiple test adjustments can be made on the equipment before formal product assembly, reducing the number of defective scrap products caused by testing, reducing the rework of subsequent assembly processes due to quality problems, and improving the efficiency of the entire production process.

[0042] The first direction is Figure 1 and Figure 2 The direction indicated by the arrow X.

[0043] Specifically, if Figure 2 As shown, the boss 20 includes a first boss 24 and a second boss 25 arranged along a first direction. The first boss 24 is a rectangular boss 20 , the second boss 25 is a trapezoidal boss 20 , the first groove 21 is provided on the first boss 24 , and the second groove 22 is provided on the second boss 25 .

[0044] The first boss 24 is a rectangular boss 20, and the first groove 21 on the boss is used to match the chip mounting groove of the voice coil motor, which can simulate the structural characteristics of the base support opening the chip mounting groove position. The second boss 25 is a trapezoidal boss 20, and the second groove 22 on the boss is used to match the surface flexible circuit board mounting groove, which can simulate the structural characteristics of the base support opening the surface flexible circuit board mounting groove position. Such partitioning can better conform to the structural characteristics of the base support during testing, and can also test different mounting positions separately, improving the professionalism and accuracy of testing. When using the test mold for testing, the boss 20 of this shape is convenient for operators to assemble and position. The shapes of the rectangular boss 20 and the trapezoidal boss 20 are obviously different, and the operator can easily distinguish the first boss 24 and the second boss 25, so as to more conveniently place the test mold on the corresponding position of the equipment for testing.

[0045] In some embodiments, as shown in Figure 3 The second groove 22 is through the side wall of the trapezoidal boss 20 away from the side of the first groove 21.

[0046] The second groove 22 matches the mounting groove of the surface flexible circuit board of the voice coil motor, and part of the circuit board can extend to the side wall opening and communicate with other components after the surface flexible circuit board is arranged in the mounting groove. Therefore, the mounting groove of the surface flexible circuit board in the actual product is through the side wall away from the chip, and the through side wall can be used as a heat dissipation channel. Therefore, the side of the first groove 21 is through the side wall of the trapezoidal boss 20 to match the actual structural characteristics, so that the test environment is more consistent with the actual situation, improving the professionalism and accuracy of testing.

[0047] In some embodiments, as shown in Figure 3 The bottom edge size of the trapezoidal boss 20 is smaller than the long edge size of the rectangular boss 20, and the bottom edge of the trapezoidal boss 20 is connected to the long edge of the rectangular boss 20 in a circular arc transition.

[0048] The bottom edge size of the trapezoidal boss 20 is smaller than the long edge size of the rectangular boss 20, and the bottom edge of the trapezoidal boss 20 is connected to the long edge of the rectangular boss 20 in a circular arc transition. This can more reasonably arrange the layout of the two bosses 20 in a limited planar space, and the circular arc transition can make the stress distribution between the two bosses 20 more uniform. During testing, when the test mold is subjected to external force (such as force during installation or disassembly, clamping force of the test equipment, etc.), the force can be more smoothly transmitted from one boss 20 to another boss 20 through the circular arc transition area. The circular arc transition can reduce the processing defects such as burrs and cracks caused by processing complex shapes, and this connection method can make the surface of the test mold smoother, reducing scratches on the mating components during use and improving product quality.

[0049] In other embodiments, the bottom side size of the trapezoidal boss 20 and the long side size of the rectangular boss 20 can also be set to be equal, which also does not cause test deviation in the actual test process.

[0050] In one possible implementation, as shown in FIG. 1, the first groove 21 is a rectangular groove, and the second groove 22 is a U-shaped groove. Figure 2 The groove side walls of the first groove 21 are connected by chamfering, and the groove side walls of the second groove 22 are connected by rounding.

[0051] In actual production, chamfering avoids sharp right-angle edges from contacting the chip, reducing the risk of the chip being scratched or damaged during installation. Therefore, the first groove 21 is designed to simulate the shape of the actual chip installation groove. Rounding makes the surface flexible circuit board have greater flexibility during installation, and the rounded corners can better fit the edge of the circuit board. Therefore, connecting the groove side walls of the second groove 22 by rounding is more in line with the actual use, further improving product quality and test accuracy. Moreover, chamfering and rounding are also easier to clean, reducing the possibility of dirt and impurities accumulating in the groove.

[0052] In other possible implementations, the first groove 21 can be a rectangular groove, and the second groove 22 can be a U-shaped groove. The groove side walls of the first groove 21 and the second groove 22 are connected by right angles.

[0053] Further, as shown in FIG. 2, the first extension 231 includes a rectangular plate body, and the rectangular plate body is provided with a third groove 2311 at the connection with the first side wall 23. Figure 1

[0054] The rectangular plate body is the main part of the first extension 231, which is used to match the side flexible circuit board of the base support of the voice coil motor. The third groove 2311 provided at the connection of the rectangular plate body and the first side wall 23 is to more conform to the specific structure of the connection between the side flexible circuit board of the actual base support and the side wall of the test mold, so as to more realistically simulate the actual installation condition and facilitate the improvement of test accuracy and reliability.

[0055] Of course, in other embodiments, the first extension 231 can only include a rectangular plate body, which simulates the general outline of the side flexible circuit board.

[0056] The application also discloses a test mold for a lens support of a voice coil motor of a camera, as shown in FIG. 3. Figures 4-5 ​As shown, the test mold of the lens holder of the voice coil motor of the camera includes a mold body 30, the outer circumferential size of the mold body 30 matches the shape and size of the frame of the lens holder of the voice coil motor, and the surface of the mold body 30 is provided with a positioning hole 31 which matches the shape and size of the thimble hole of the lens holder of the voice coil motor.

[0057] The test mold of the lens holder of the voice coil motor of the camera provided by the embodiment of the present application can accurately simulate the outer contour of the lens holder, and ensure that the equipment clamping jaw can be placed in the corresponding mounting groove in the equipment after clamping during the test. At the same time, the mounting groove of the equipment is matched with the corresponding positioning structure, so that the positioning hole 31 on the surface of the mold body 30 matches the shape and size of the thimble hole of the lens holder, which can simulate the real installation environment during the test. By matching the positioning hole 31 with the thimble hole, the positioning hole 31 of the mold body 30 can be matched and positioned with the positioning structure in the equipment mounting groove to test the accuracy of the equipment clamping jaw in placing the lens holder into the equipment mounting groove, thereby avoiding the need to repeatedly adjust the test equipment due to inaccurate position, and accurately judging the position accuracy and size accuracy, so as to ensure that the lens holder can work normally after actual installation, improve the test quality, and reduce product failure caused by quality problems of the lens holder.

[0058] Further, as shown in the figure, Figure 5 The mold body 30 is a rectangular structure, and the positioning hole 31 includes a plurality of positioning holes 31 which are arranged at the vertex edges of the rectangular structure.

[0059] By distributing the plurality of positioning holes 31 at the vertex edges, the lens holder can be positioned from multiple positions, which can effectively reduce the cumulative error in the positioning process, and the plurality of positioning holes 31 at the vertex edges can also better move the test mold to the correct position, thereby ensuring the accuracy of the test.

[0060] The number of the positioning hole 31 can have various implementation manners, for example, the number of the positioning hole 31 is four, and the positioning hole 31 is arranged at the four vertexes of the rectangular structure. In other embodiments, the positioning hole can also be one, two, three or more, which is not limited herein.

[0061] As shown in the figure, Figure 4 The mold body 30 further includes a third side wall 32 and a fourth side wall 33 which are adjacent to each other, the length of the third side wall 32 is less than that of the fourth side wall 33, the third side wall 32 is provided with a third boss 321 at the middle part thereof, the fourth side wall 33 is provided with a second extension part 331 which is close to the third side wall 32, and the second extension part 331 matches the shape and size of the side flexible printed circuit board of the lens holder of the voice coil motor.

[0062] By setting the third boss 321 in the middle of the third side wall 32 and the second extension 331 close to the third side wall 32 of the fourth side wall 33, the detailed structural features of the actual lens holder are fully designed, the assembly position and size of the side flexible printed circuit board of the lens holder of the voice coil motor in the actual product are simulated, so that the stress and balance during testing by the test mold are more consistent with the actual working condition, the clamping force during clamping and placing by the equipment clamping jaw is more accurate, and the testing accuracy is further improved.

[0063] As shown in Figure 4 The second extension 331 includes a rectangular plate body, and the rectangular plate body is provided with a fourth groove 3311 at the connection with the fourth side wall 33.

[0064] The rectangular plate body is the main part of the second extension 331, which is used to match the side flexible printed circuit board of the lens holder of the voice coil motor, and the fourth groove 3311 provided at the connection of the rectangular plate body and the fourth side wall 33 is used to more conform to the specific structure of the connection of the side flexible printed circuit board of the actual lens holder and the side wall of the test mold, so as to more truly simulate the actual installation condition and facilitate the improvement of the testing accuracy and reliability.

[0065] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A test mold for the base bracket of a voice coil motor of a camera, characterized in that: include: A bottom plate (10), the bottom plate (10) matching the shape and size of the frame of the base support of the voice coil motor; A boss (20), wherein the boss (20) is provided on the base plate (10), and a surface of the boss (20) facing away from the base plate (10) is provided with a first groove (21) and a second groove (22) arranged along a first direction (X), wherein the first groove (21) matches the shape and size of the chip mounting groove of the voice coil motor, and the second groove (22) matches the shape and size of the surface flexible circuit board mounting groove of the voice coil motor, and a first side wall (23) of the boss (20) is provided with a first extension portion (231), wherein the first side wall (23) is parallel to the first direction (X), and the first extension portion (231) matches the shape and size of the side flexible circuit board of the base bracket of the voice coil motor.

2. The test mold for the base bracket of the voice coil motor of the camera according to claim 1, characterized in that: The boss (20) comprises a first boss (24) and a second boss (25) arranged along the first direction (X), the first boss (24) being a rectangular boss, the second boss (25) being a trapezoidal boss, the first groove (21) being provided on the first boss (24), and the second groove (22) being provided on the second boss (25).

3. The test mold for the base bracket of the voice coil motor of the camera according to claim 2, characterized in that: The side of the second groove (22) facing away from the first groove (21) is connected to the side wall of the trapezoidal boss.

4. The test mold for the base bracket of the voice coil motor of the camera according to claim 2, characterized in that: The bottom side of the trapezoidal boss is smaller than the long side of the rectangular boss, and the bottom side of the trapezoidal boss is transitionally connected to the long side of the rectangular boss in an arc shape.

5. The test mold for the base bracket of the voice coil motor of the camera according to claim 1, characterized in that: The first groove (21) is a rectangular groove, and the groove side walls of the first groove (21) are connected by chamfers; the second groove (22) is a U-shaped groove, and the groove side walls of the second groove (22) are connected by chamfers.

6. The test mold for the base bracket of the voice coil motor of the camera according to claim 1, characterized in that: The first extension portion (231) comprises a rectangular plate body, and a third groove is provided at the connection between the rectangular plate body and the first side wall.

7. A test mold for a lens holder of a voice coil motor of a camera, characterized in that: The invention comprises a mold body (30), the outer peripheral size of the mold body (30) matches the shape and size of the frame of the lens holder of the voice coil motor of the camera, and the surface of the mold body (30) is provided with a positioning hole (31), and the positioning hole (31) matches the shape and size of the ejector pin hole of the lens holder of the voice coil motor.

8. The test mold for the lens holder of the voice coil motor of the camera according to claim 7, characterized in that: The mold body (30) is a rectangular structure, and the positioning holes (31) include a plurality of positioning holes (31), which are arranged at the vertex edges of the rectangular structure.

9. The test mold for the lens holder of the voice coil motor of the camera according to claim 7, characterized in that: The mold body (30) further includes a third side wall (32) and a fourth side wall (33) adjacent to each other, wherein the length of the third side wall (32) is smaller than that of the fourth side wall (33), a third boss (321) is provided on the middle portion of the third side wall (32), and a second extension portion (331) is provided on the fourth side wall (33) near the third side wall (32), wherein the second extension portion (331) matches the shape and size of the flexible circuit board on the side of the lens holder of the voice coil motor.

10. The test mold for the lens holder of the voice coil motor of the camera according to claim 9, characterized in that: The second extension portion (331) comprises a rectangular plate body, and a fourth groove (3311) is provided at the connection between the rectangular plate body and the fourth side wall (33).

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