Jig for dust removal in voice coil motor and dust removal device

Abstract

The utility model relates to the technical field of voice coil motor dust removal equipment, and provides a jig for dust removal in a voice coil motor and a dust removal device.The jig comprises a base and a top cover located above the base; at least one first air inducing hole is formed in the bottom surface of the top cover; at least one second air inducing hole is formed in the top surface of the base; at least one air guide column which can be inserted into the voice coil motor is arranged between the first air inducing hole and the second air inducing hole; the radial side wall of the air guide column is provided with at least one airflow window opposite to the inner side wall of the voice coil motor; an air inducing channel communicating with the airflow window and the second air inducing hole is formed in the air guiding column. According to the voice coil motor, airflow between the first air inducing hole and the second air inducing hole is guided through the air guiding column, so that the airflow impacts the side wall in the voice coil motor, dust and impurities in the voice coil motor are effectively taken away, and the dust removal effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of voice coil motor dust removal equipment, in particular to a jig and a dust removal device for removing dust inside a voice coil motor. Background Art

[0002] Voice coil motors (also called optical motors) are generally used in camera modules to drive the lens to move and achieve lens focus. The voice coil motor generally includes a housing, which is provided with through holes arranged in the up and down directions, and an electromagnetic structure is arranged in the through hole. The lens of the camera module is arranged in the electromagnetic structure, and the electromagnetic structure is used to drive the lens to move.

[0003] The internal structure of the voice coil motor is complex, and dirt is easily hidden in the dead corners, and it is difficult to remove it, which will have an adverse effect on the product. At present, the tornado principle is used for cleaning, and its principle includes: placing the voice coil motor on a tray, the tray is provided with multiple through holes, each voice coil motor is located above a through hole, and the tray is placed under the tornado forming device, and the impurities inside the voice coil motor are sucked out by the adsorption principle of the tornado to achieve the purpose of dust removal. However, in batch operation, since the tornado formed by the tornado forming device can only batch adsorb voice coil motors within a certain range, it cannot accurately adsorb and dust each voice coil motor. The voice coil motor located below the center of the tornado has a more obvious dust removal effect, while the voice coil motor far away from the center of the tornado cannot obtain sufficient adsorption airflow, resulting in poor dust removal effect. In addition, since the tornado only adsorbs and removes dust from the top of the voice coil motor, the airflow cannot effectively penetrate the dead corners inside the voice coil motor, resulting in the inability to effectively remove the dust in the dead corners inside, and the dust removal effect is not obvious.

[0004] Therefore, it is necessary to provide a technical solution that can improve the dust removal effect of the voice coil motor. Utility Model Content

[0005] The utility model provides a jig and a dust removal device for removing dust inside a voice coil motor, which can effectively remove dust and impurities inside the voice coil motor.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A jig for removing dust from inside a voice coil motor comprises a base and a top cover located above the base; at least one first air induction hole is provided on the bottom surface of the top cover; at least one second air induction hole is provided on the top surface of the base; an air guide column which can be inserted into the inside of the voice coil motor is provided between the first air induction hole and the second air induction hole; at least one air flow window which can be opposite to the inner side wall of the voice coil motor is provided on the radial side wall of the air guide column; an air induction channel which connects the air flow window and the second air induction hole is provided inside the air guide column.

[0008] In one embodiment, the top of the air guide column includes an air induction portion for guiding the airflow flowing from top to bottom to the inner side wall of the voice coil motor; the airflow window is located below the air induction portion, and the airflow returned by the inner side wall of the voice coil motor enters the air induction channel through the airflow window.

[0009] In one embodiment, the air induction portion is arranged to extend outwardly and downwardly from the edge of the top wall of the air guide column.

[0010] In one embodiment, the top of the air guide column is in a cone or a frustum shape; the air induction portion is formed by the inclined side surface of the top of the air guide column.

[0011] In one embodiment, a plug-in slot is provided on the top surface of the base, and the second air inlet hole is opened in the plug-in slot; the bottom end of the air guide column is detachably plugged into the plug-in slot.

[0012] In one embodiment, the air induction channel is extended along the axial direction of the air guide column and penetrates the end wall at the bottom end of the air guide column; the second air induction hole is opened on the bottom wall inside the plug-in slot.

[0013] In one embodiment, the number of second air ducting holes is multiple; the number of first air ducting holes is the same as the number of second air ducting holes; the positions of each first air ducting hole and each second air ducting hole correspond one by one; the number of air guide columns is the same as the number of second air ducting holes; the positions of each air guide column and each second air ducting hole correspond one by one.

[0014] In one embodiment, an airflow cavity is provided inside the base; at least one airflow hole for communicating with the outside is opened on the side wall of the airflow cavity; and each second air induction hole is connected to the airflow cavity.

[0015] In one embodiment, the base includes a main body and a cover plate; the top wall of the main body is recessed downward to form a groove; the cover plate is covered in the notch of the groove, and an airflow cavity is defined by the cover plate and the groove; and the second air ducting hole is opened in the cover plate.

[0016] A dust removal device comprises a blowing mechanism, an exhaust mechanism and the above-mentioned jig for removing dust inside a voice coil motor; one of the blowing port of the blowing mechanism and the exhaust port of the exhaust mechanism is connected to a first air inlet, and the other is connected to a second air inlet.

[0017] The beneficial effects of the utility model are:

[0018] An air guide column for inserting into the voice coil motor is provided between the first air inlet hole and the second air inlet hole of the present application. The airflow between the first air inlet hole and the second air inlet hole is guided by the air guide column so that the airflow impacts the side wall inside the voice coil motor. Specifically, the airflow window of the air guide column can be opposite to the side wall inside the voice coil motor. When the airflow flows downward, the top of the air guide column blocks the airflow, so that the airflow is dispersed to the surrounding side of the air guide column, and finally impacts the side wall inside the voice coil motor, and returns into the airflow window and enters the air inlet channel; when the airflow flows from bottom to top, the airflow flows out from the airflow window and directly impacts the side wall inside the voice coil motor. In the above manner, the airflow can directly impact the side wall inside the voice coil motor, thereby effectively removing dust and impurities inside the voice coil motor, and the dust removal effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the utility model, but should not constitute a limitation of the utility model.

[0020] Figure 1 It is a schematic diagram of the overall structure of the voice coil motor according to an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the fixture of an embodiment of the utility model;

[0022] Figure 3 It is a schematic cross-sectional structure diagram of a fixture according to an embodiment of the utility model;

[0023] Figure 4 For the utility model embodiment Figure 3 A schematic diagram of the enlarged structure of the A part;

[0024] Figure 5 A schematic diagram of the combined structure of the fixture of an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the wind guide column of an embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the combined structure of the air guide column and the base in an embodiment of the utility model;

[0027] Figure 8 A schematic diagram of the combined structure of the base of an embodiment of the utility model;

[0028] Fig. 9 A schematic diagram of the wind guiding principle of the wind guiding column of an embodiment of the utility model;

[0029] Fig.10 The figure is a schematic diagram of the wind guiding principle of the wind guiding column according to an embodiment of the utility model.

[0030] Notes on the attached drawings:

[0031] 10. Top cover; 11. First air inlet;

[0032] 20. base; 21. cover plate; 211. second air inlet; 212. limit block; 22. main body; 221. airflow hole; 222. airflow cavity;

[0033] 30. Wind guide column; 31. Air flow window; 32. Wind induction part; 33. Wind induction channel;

[0034] 40. Voice coil motor;

[0035] 50. Pallet. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0037] This embodiment discloses a dust removal device, which is used to remove dust from the inside of the voice coil motor 40. Figure 1 , a conventional voice coil motor 40 generally includes a shell, the shell is provided with a through hole 41 extending from top to bottom and a ring-shaped carrier suspended in the through hole 41 by an elastic component, the inner wall of the through hole 41 is also provided with a magnetic component (not shown in the figure) arranged around the carrier, and the outer wall of the carrier is provided with a coil (not shown in the figure) opposite to the magnetic component. After the coil is energized, the coil and the magnetic component generate an interaction force to drive the carrier to move. The dust removal device of this embodiment is used to remove dust from the inner wall of the through hole 41, the coil, the inner ring side wall of the carrier, and other parts and structural parts in the through hole 41. Of course, in other embodiments, the installation position of the coil and the installation position of the magnetic component can be interchanged. In other embodiments, the voice coil motor 40 can also be narrowly understood as a semi-finished voice coil motor 40 that does not include a carrier. For example, the voice coil motor 40 only includes a shell, and the shell is provided with a through hole 41 extending from top to bottom. The dust removal device can remove dust from the inside of the through hole 41.

[0038] In this embodiment, the dust removal device includes a blowing mechanism (not shown in the figure), an exhaust mechanism (not shown in the figure) and a jig for removing dust from the inside of the voice coil motor 40, and the jig can be loaded with the voice coil motor 40. The blowing port of the blowing mechanism and the exhaust port of the exhaust mechanism act on the upper and lower parts of the jig respectively to generate an airflow flowing through the jig in the up and down directions, and the airflow is used to remove dust from the inside of the voice coil motor 40 loaded on the jig. Among them, the blowing mechanism can adopt a blower, fan, air pump, air compressor and other mechanisms commonly used in the market that can supply air. The exhaust mechanism can adopt an exhaust fan, vacuum pump, exhaust fan and other mechanisms commonly used in the market that can exhaust air.

[0039] See also Figure 2 , Figure 3 as well as Figure 4 In this embodiment, the fixture includes a base 20 and a top cover 10 located above the base 20. A first air inlet hole 11 is provided on the bottom surface of the top cover 10. Specifically, the first air inlet hole 11 vertically penetrates the top and bottom surfaces of the top cover 10. A second air inlet hole 211 is provided on the top surface of the base 20. An air guide column 30 that can be inserted into the interior of the voice coil motor 40 is provided between the first air inlet hole 11 and the second air inlet hole 211. Specifically, the air guide column 30 can be inserted into the through hole 41 of the shell of the voice coil motor 40, and the air guide column 30 is mainly used to guide the airflow to the side wall inside the voice coil motor 40 so as to remove dust from the interior of the voice coil motor 40. An airflow window 31 is provided on the radial side wall of the air guide column 30, which is opposite to the inner side wall of the voice coil motor 40. Preferably, there are three airflow windows 31, which are arranged at equal intervals along the circumference of the air guide column 30. Of course, in other embodiments, the number of airflow windows 31 may be one, two, or more than three. In this embodiment, an air induction channel 33 is provided inside the air guide column 30, which connects the airflow window 31 and the second air induction hole 211.

[0040] This embodiment can effectively remove dust and impurities inside the voice coil motor 40. Specifically, it is embodied in:

[0041] In this embodiment, an air guide column 30 for inserting into the voice coil motor 40 is provided between the first air ducting hole 11 and the second air ducting hole 211. The air guide column 30 is used to guide the airflow flowing between the first air ducting hole 11 and the second air ducting hole 211 so that the airflow impacts the side wall inside the voice coil motor 40.

[0042] In an application scenario (please combine Figure 4 and Fig. 9), since the airflow window 31 of the air guide column 30 can be opposite to the inner side wall of the voice coil motor 40, when the airflow flows from top to bottom, the top of the air guide column 30 blocks the airflow, so that the airflow is dispersed to the surrounding side of the air guide column 30, and finally impacts the inner side wall of the voice coil motor 40, and after turning back through the inner side wall of the voice coil motor 40, enters the air induction channel 33 through the airflow window 31. In this process, the airflow can bring impurities inside the voice coil motor 40 into the air induction channel 33, and finally the dust impurities are discharged from the air induction channel 33. Among them, the airflow window 31 is mainly used to timely guide the airflow into the air induction channel 33, to avoid the airflow from turning back and forth between the air guide column 30 and the inner side wall of the voice coil motor 40 to generate turbulence, thereby affecting the dust removal effect. In this application scenario, through the above-mentioned method, the airflow can directly impact the inner side wall of the voice coil motor 40, and the strong airflow can wash away the dust impurities in the dead corners of the voice coil motor 40, effectively take away the dust impurities inside the voice coil motor 40, and the dust removal effect is better.

[0043] In another application scenario (please combine Figure 4 and Fig.10 ), since the airflow window 31 of the air guide column 30 can be opposite to the side wall inside the voice coil motor 40, when the airflow flows from bottom to top, the airflow enters the air induction channel 33, flows out from the airflow window 31, directly hits the side wall inside the voice coil motor 40, and then goes up to enter the first air induction hole 11. In this process, the airflow can bring impurities inside the voice coil motor 40 into the first air induction hole 11. In this application scenario, through the aforementioned method, the airflow can directly hit the side wall inside the voice coil motor 40, and the strong airflow can wash away the dust and impurities in the dead corners inside the voice coil motor 40, effectively taking away the dust and impurities inside the voice coil motor 40, and the dust removal effect is better.

[0044] Compared with the prior art, the air guide column 30 of the present embodiment can, on the one hand, position the voice coil motor 40 so as to remove dust from the inside of the voice coil motor 40; on the other hand, when the inside of the voice coil motor 40 is plugged into the air guide column 30 and the air flow flows between the first air inlet hole 11 and the second air inlet hole 211, the air flow flows through the air inlet channel 33 and the air flow window 31. During this process, the air flow impacts the inner side wall of the voice coil motor 40, thereby removing dust from the inner side wall of the voice coil motor 40, and the dust removal effect is better.

[0045] In this embodiment, one of the blowing port of the blowing mechanism and the exhaust port of the exhaust mechanism is connected to the first air inlet hole 11, and the other is connected to the second air inlet hole 211. The blowing mechanism and the exhaust mechanism work simultaneously, so that a strong airflow can be formed between the first air inlet hole 11 and the second air inlet hole 211.

[0046] Specifically, in the present embodiment, the air blast outlet of the air blast mechanism is connected to the first air inlet hole 11, and the air blast outlet of the air exhaust mechanism is connected to the second air inlet hole 211. When the air blast mechanism and the air exhaust mechanism work simultaneously, an air flow flowing from top to bottom can be formed between the first air inlet hole 11 and the second air inlet hole 211. Of course, in other embodiments, the air blast outlet of the air blast mechanism can be connected to the second air inlet hole 211, and the air blast outlet of the air exhaust mechanism is connected to the first air inlet hole 11, and when the air exhaust mechanism and the air blast mechanism work simultaneously, an air flow flowing from bottom to top is formed between the first air inlet hole 11 and the second air inlet hole 211.

[0047] Please continue reading Figure 3 and Figure 5 In this embodiment, the number of second air induction holes 211 is multiple, and all second air induction holes 211 are arranged in an array. The number of first air induction holes 11 is the same as the number of second air induction holes 211, and the positions of each first air induction hole 11 and each second air induction hole 211 correspond one by one; the number of air guide columns 30 is the same as the number of second air induction holes 211; and the positions of each air guide column 30 and each second air induction hole 211 correspond one by one.

[0048] In one application scenario, multiple voice coil motors 40 are placed on a tray 50, and the tray 50 is provided with multiple placement locations for the voice coil motors 40, and each placement location is provided with an insertion hole. The tray 50 is placed on the top surface of the base 20, so that each air guide column 30 passes through the insertion hole of the tray 50 from bottom to top, and is inserted into the through hole 41 of the corresponding voice coil motor 40. The air outlet of the blowing mechanism is connected to each first air induction hole 11 through multiple pipes, and the air outlet of the exhaust mechanism is connected to each second air induction hole 211. When the exhaust mechanism and the blowing mechanism work at the same time, a flowing airflow can be formed between each first air induction hole 11 and each second air induction hole 211, and each air guide column guides the corresponding airflow to the side wall inside the corresponding voice coil motor 40, thereby removing dust from each voice coil motor 40 at the same time, thereby improving work efficiency.

[0049] Please combine Figure 3 and Figure 6 In this embodiment, the top of the air guide column 30 includes an air induction portion 32. When the air flows from top to bottom, the air induction portion 32 can guide the air to the inner side wall of the voice coil motor 40, so that the air impacts the inner side wall of the voice coil motor 40, thereby achieving a dust removal effect.

[0050] Furthermore, the airflow window 31 is located below the air induction portion 32, and the airflow that is turned back through the inner side wall of the voice coil motor 40 enters the air induction channel 33 through the airflow window 31, and finally enters the second air induction hole 211 from the air induction channel 33. In this process, the airflow can bring dust and impurities inside the voice coil motor 40 from the airflow window 31 into the air induction channel 33, and finally enter the second air induction hole 211 from the air induction channel 33.

[0051] In this embodiment, when the air guide column 30 is inserted into the through hole 41 of the voice coil motor 40, the top surface of the air guide column 30 is flush with the upper end of the through hole 41 of the voice coil motor 40. The air guide portion 32 extends downward and outward from the edge of the top wall of the air guide column 30. When the airflow flows through the air guide portion 32, the air guide portion 32 guides the airflow obliquely toward the inner side wall of the voice coil motor 40. In this way, after the airflow hits the inner side wall of the voice coil motor 40, the airflow can be turned back obliquely downward toward the airflow window 31, so that the airflow can be prevented from repeatedly turning back between the air guide portion 32 and the inner side wall of the voice coil motor 40 to generate turbulence.

[0052] In this embodiment, the top of the air guide column 30 is in a cone shape, a truncated cone shape, a pyramid shape, a truncated pyramid shape, or other irregular three-dimensional shapes with applicable inclined surfaces. The air induction portion 32 is formed by the inclined side surface of the top of the air guide column 30 .

[0053] Please combine Figure 3 and Figure 7 In this embodiment, a plug-in slot (not marked in the figure) is provided on the top surface of the base 20, the second air inlet hole 211 is provided in the plug-in slot, and the bottom end of the air guide column 30 is detachably plugged into the plug-in slot. Specifically, the plug-in slot is recessed downward from the top surface of the base 20, and the shape of the plug-in slot is adapted to the shape of the air guide column 30. When the bottom end of the air guide column 30 is inserted into the plug-in slot, the bottom end of the air guide column 30 is interference-fitted with the plug-in slot, and the friction between the bottom end of the air guide column 30 and the plug-in slot is used to restrict the air guide column 30 on the base 20. In addition, different types of air guide columns 30 can be replaced to adapt to voice coil motors 40 of different structural sizes.

[0054] In this embodiment, the air induction channel 33 is extended along the axial direction of the air guide column 30 and penetrates the end wall of the bottom end of the air guide column 30. The second air induction hole 211 is opened on the bottom wall inside the plug-in slot. When the bottom end of the air guide column 30 is plugged into the plug-in slot, the air induction channel 33 can be connected to the second air induction hole 211.

[0055] In this embodiment, an airflow cavity 222 is provided inside the base 20, and a plurality of airflow holes 221 for communicating with the outside are provided on the side wall of the airflow cavity 222. Specifically, the plurality of airflow holes 221 are evenly distributed on the circumferential side wall of the base 20. In other embodiments, the number and installation position of the airflow holes 221 can be changed according to actual needs.

[0056] In this embodiment, each second air induction hole 211 is connected to the air flow cavity 222. The air inlet of the air extraction mechanism can be connected to the multiple air flow holes 221 through multiple pipes. When the air extraction mechanism and the air blowing mechanism work simultaneously, so that the air flow flows from top to bottom, the air flow can enter the air flow cavity 222 through the air induction channel 33 and the second air induction hole 211, and finally be discharged from the air flow hole 221. Heavier impurities can be deposited at the bottom of the air flow cavity 222, and lighter dust impurities can also be mostly accumulated in the air flow cavity 222.

[0057] Please combine Figure 8 In this embodiment, the base 20 is a split structure. The base 20 includes a main body 22 and a cover plate 21; the top wall of the main body 22 is recessed downward to form a groove; the cover plate 21 is covered on the notch of the groove, and the airflow cavity 222 is defined by the cover plate 21 and the groove. Specifically, the notch of the groove is formed with a step portion, and the bottom surface of the cover plate 21 abuts against the top surface of the step portion. The cover plate 21 can be fixed to the step surface of the groove by a fastener, or hinged to one side of the notch of the groove by a hinge. When it is necessary to clean the impurities accumulated in the airflow cavity 222, the cover plate 21 can be opened to clean the impurities. Furthermore, the plug-in slot and the second air duct 211 are both provided on the cover plate 21.

[0058] Please continue reading Figure 3 In this embodiment, a ring-shaped skirt plate convexly arranged downward is provided on the bottom edge of the top cover 10; a plurality of limit blocks 212 are convexly arranged on the edge of the top surface of the base 20, and the plurality of limit blocks 212 are evenly distributed on the four edges of the top surface of the base 20. When the top cover 10 is arranged on the top surface of the base 20, the limit blocks 212 are located on the inner side of the skirt plate and abut against the inner wall of the skirt plate. The relative position of the top cover 10 and the base 20 is limited by the limit blocks 212 to prevent the top cover 10 from deviating along the top surface of the base 20.

[0059] As long as it does not violate the creative idea of ​​the utility model, any combination of various different embodiments of the utility model should be regarded as the content disclosed by the utility model; within the technical concept of the utility model, any simple modification of the technical solution and any combination of different embodiments that do not violate the creative idea of ​​the utility model should be within the protection scope of the utility model.

Claims

1. A jig for removing dust from inside a voice coil motor, characterized in that: The invention comprises a base (20) and a top cover (10) located above the base (20); at least one first air induction hole (11) is provided on the bottom surface of the top cover (10); at least one second air induction hole (211) is provided on the top surface of the base (20); an air guide column (30) which can be inserted into the inside of a voice coil motor (40) is provided between the first air induction hole (11) and the second air induction hole (211); at least one air flow window (31) which can be opposite to the inner side wall of the voice coil motor (40) is provided on the radial side wall of the air guide column (30); an air induction channel (33) which connects the air flow window (31) and the second air induction hole (211) is provided inside the air guide column (30).

2. The jig for removing dust from inside a voice coil motor according to claim 1, characterized in that: The top end of the air guide column (30) includes an air induction portion (32) for guiding the airflow flowing from top to bottom to the inner side wall of the voice coil motor (40); the airflow window (31) is located below the air induction portion (32), and the airflow that is reflected back through the inner side wall of the voice coil motor (40) enters the air induction channel (33) through the airflow window (31).

3. The jig for removing dust from inside a voice coil motor as claimed in claim 2, characterized in that: The air induction portion (32) is arranged to extend outwardly and downwardly from the edge of the top wall of the air guide column (30).

4. The jig for removing dust from inside a voice coil motor as claimed in claim 3, characterized in that: The top end of the air guide column (30) is in the shape of a cone or a frustum; the air induction portion (32) is formed by the inclined side surface of the top end of the air guide column (30).

5. The jig for removing dust from inside a voice coil motor according to claim 1, characterized in that: The top surface of the base (20) is provided with a plug-in slot, and the second air inlet hole (211) is opened in the plug-in slot; the bottom end of the air guide column (30) is detachably plugged into the plug-in slot.

6. The jig for removing dust from inside a voice coil motor as claimed in claim 5, characterized in that: The air induction channel (33) is arranged to extend along the axial direction of the air guide column (30) and penetrates the end wall at the bottom end of the air guide column (30); the second air induction hole (211) is provided on the bottom wall inside the plug-in slot.

7. The jig for removing dust from inside a voice coil motor according to claim 1, characterized in that: The number of the second air induction holes (211) is multiple; the number of the first air induction holes (11) is the same as the number of the second air induction holes (211); the positions of each of the first air induction holes (11) and each of the second air induction holes (211) correspond one by one; the number of the air guide columns (30) is the same as the number of the second air induction holes (211); the positions of each of the air guide columns (30) and each of the second air induction holes (211) correspond one by one.

8. The jig for removing dust from inside a voice coil motor as claimed in claim 7, characterized in that: An airflow cavity (222) is provided inside the base (20); a side wall of the airflow cavity (222) is provided with at least one airflow hole (221) for communicating with the outside; each of the second air induction holes (211) is connected to the airflow cavity (222).

9. The jig for removing dust from inside a voice coil motor as claimed in claim 8, characterized in that: The base (20) comprises a main body (22) and a cover plate (21); the top wall of the main body (22) is recessed downward to form a groove; the cover plate (21) is arranged to cover the notch of the groove, and the airflow cavity (222) is defined by the cover plate (21) and the groove; the second air induction hole (211) is provided on the cover plate (21).

10. A dust removal device, characterized in that: It comprises a blowing mechanism, an exhaust mechanism and a jig for removing dust inside a voice coil motor as described in any one of claims 1 to 9; one of the blowing port of the blowing mechanism and the exhaust port of the exhaust mechanism is connected to the first air inlet (11), and the other is connected to the second air inlet (211).

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