Variable aperture drive motor, camera device, and electronic equipment

Abstract

The present invention provides a variable aperture drive motor, a camera device and an electronic device. The variable aperture drive motor includes: a base, the base has an accommodating cavity; a lens support body, at least a part of the lens support body is movably arranged inside the accommodating cavity; a driving magnet, there are multiple driving magnets, and the driving magnets are arranged on the circumferential side wall of the lens support body; a driving coil, there are multiple driving coils, and the driving magnets and the driving coils are mutually induced to rotate the lens support body relative to the base; a blade group, the first end of the blade group is arranged at the top of the base; a magnetic conductive sheet, the magnetic conductive sheet is arranged on the side of one of the driving coils away from the driving magnet; a ball, there are multiple balls, and the multiple balls are divided into two groups, the two groups of balls are respectively arranged on both sides of the magnetic conductive sheet, and the balls are located between the base and the lens support body. The present invention solves the problem of poor performance of the aperture drive device of the camera module of the electronic device in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of camera devices, and in particular to a variable aperture drive motor, a camera device and an electronic device. Background Art

[0002] At present, electronic devices such as smart phones and tablet computers have become indispensable electronic products in people's lives. With the continuous development of the electronic equipment industry, the functions of electronic devices have gradually become diversified and intelligent, among which the shooting function has become one of the essential functions of electronic devices. Due to the limited installation space of the camera module in electronic devices such as mobile phones, a fixed aperture device with a simple structure is usually set up. However, its aperture area is fixed and cannot adapt to different shooting scenes, let alone meet the shooting needs of users. Therefore, with the development of the market, there is an increasing need for mobile phones with variable aperture devices to shoot and image to meet different shooting needs. For example, when shooting at a distance, a large aperture is used to increase the amount of light entering and the bokeh effect, and when shooting at a close focus, a small aperture is switched to improve the resolution of the close focus shooting. However, the existing variable aperture drive device has problems such as many parts, complex assembly, and poor optical axis stability.

[0003] Therefore, in the prior art, there is a problem that the aperture driving device of the camera module of the electronic device has poor performance. Summary of the Invention

[0004] The main purpose of the present invention is to provide a variable aperture drive motor, a camera device and an electronic device to solve the problem of poor performance of the aperture drive device of the camera module of the electronic device in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a variable aperture drive motor is provided, comprising: a base, the base having an accommodating cavity; a lens support body, at least a part of the lens support body is movably arranged inside the accommodating cavity; a driving magnet, there are a plurality of driving magnets, the driving magnets are arranged on the circumferential side wall of the lens support body, and at least two of the plurality of driving magnets are symmetrically arranged relative to the lens support body; a driving coil, there are a plurality of driving coils, and the driving coils are arranged on the side wall of the base corresponding to the driving magnets, and the driving magnets and the driving coils induce each other to rotate the lens support body relative to the base; a blade group, a first end of the blade group is arranged at the top end of the base, and a second end of the blade group is connected to the lens support body so that the second end of the blade group can rotate relative to the first end of the blade group; a magnetic conductive sheet, the magnetic conductive sheet is arranged on the side of one of the driving coils away from the driving magnet; a plurality of balls, the plurality of balls are divided into two groups, the two groups of balls are respectively arranged on both sides of the magnetic conductive sheet, and the balls are located between the base and the lens support body.

[0006] Furthermore, the variable aperture drive motor further includes an electrical connection component, at least a portion of which is embedded in the bottom of the base, and there is an interaction force between the electrical connection component and the drive magnet.

[0007] Furthermore, the electrical connection assembly includes a plurality of arc-shaped conductive connectors, and the plurality of conductive connectors are arranged around the circumference of the lens support body.

[0008] Furthermore, the variable aperture drive motor also includes an FPC assembly, which is arranged around the circumference of the base, the drive coil and the magnetic conductive sheet are respectively arranged on the FPC assembly, and the FPC assembly is electrically connected to the electrical connection assembly.

[0009] Furthermore, the FPC assembly includes two FPC boards, which are respectively arranged on sides of two oppositely arranged driving magnets that are away from each other, and the magnetic conductive sheet is arranged on one of the FPC boards.

[0010] Furthermore, the circumferential side wall of the base has a plurality of positioning grooves, and the driving coil and at least a portion of the FPC board are arranged inside the positioning grooves.

[0011] Furthermore, the periphery of the positioning groove has a positioning protrusion, and the FPC board has a positioning notch corresponding to the positioning protrusion.

[0012] Furthermore, multiple balls in the same group are arranged along the Z-axis direction; and / or the distances between the two groups of balls and the magnetic conductive sheet are the same; and / or the distances between the balls and the two oppositely arranged driving coils are different, and the distance between the balls and the driving coil close to the magnetic conductive sheet is smaller than the distance between the balls and the driving coil far away from the magnetic conductive sheet.

[0013] Furthermore, the circumferential inner side wall of the base is respectively provided with a plurality of mounting grooves corresponding to the two groups of balls, each mounting groove is provided with at least one ball, at least a portion of the ball is located inside the mounting groove, and at least another portion of the ball protrudes from the mounting groove.

[0014] Furthermore, the lens support body is provided with two sliding grooves corresponding to the two groups of balls, and in the circumferential direction of the lens support body, the length of the sliding groove is greater than the rotation stroke of the lens support body.

[0015] Furthermore, the distance between the bottom surface of the sliding groove close to the center of the lens support body and the bottom surface of the mounting groove away from the center of the lens support body is greater than the diameter of the ball.

[0016] Furthermore, the variable aperture driving motor further includes a cover plate, which is disposed on the base, and the lens support body is located between the cover plate and the base.

[0017] Furthermore, the cover plate includes: a main body, which is covered on the base; a plurality of fixing feet, which are arranged along the circumference of the main body and extend toward the base, and the fixing feet abut against the circumferential outer wall of the base, and at least a portion of the FPC assembly is located between the fixing feet and the circumferential outer wall of the base.

[0018] Furthermore, the main body is made of plastic material; and / or the fixing legs are made of metal material.

[0019] Furthermore, the base has a plurality of fixed columns for mounting the blade group, and the side of the cover plate facing the lens support body has a plurality of fixed grooves corresponding to the plurality of fixed columns; and / or the lens support body has a plurality of movable columns for mounting the blade group, and the side of the cover plate facing the lens support body has a plurality of movable grooves corresponding to the plurality of movable columns; and / or the side of the cover plate facing the lens support body has at least one anti-collision protrusion.

[0020] Furthermore, there are two mounting grooves, which correspond one to one with the two groups of balls. The mounting groove has a mounting opening on the side facing the cover plate, and the cover plate is provided with a limiting boss corresponding to the mounting opening, and the end of the limiting boss covers the mounting opening.

[0021] Furthermore, the bottom of the base has a plurality of limiting protrusions extending toward the lens support body, and the lens support body is provided with a plurality of limiting grooves corresponding to the plurality of limiting protrusions, and in the circumferential direction of the lens support body, the length of the limiting groove is greater than the length of the limiting protrusion.

[0022] Furthermore, a plurality of limiting grooves are provided along the circumferential side wall of the lens support body on a side close to the base.

[0023] Furthermore, the bottom of the base also has a plurality of abutment bosses extending toward the lens support body, the bottom surface of the lens support body abuts against the abutment bosses, and the height of the abutment bosses is smaller than the height of the limiting protrusions.

[0024] Furthermore, the circumferential side wall of the lens support body is provided with at least two anti-collision bosses extending radially along the lens support body, and the two anti-collision bosses are arranged on both sides of the driving magnet corresponding to the driving coil without a magnetic conductive sheet in the two oppositely arranged driving coils.

[0025] Furthermore, the variable aperture drive motor further includes a gasket, which is arranged between the blade group and the lens support body.

[0026] According to another aspect of the present invention, there is provided an imaging device including the variable aperture drive motor described above.

[0027] According to another aspect of the present invention, an electronic device is provided. The electronic device includes the above-mentioned camera device.

[0028] According to the technical solution of the present invention, the variable aperture drive motor in the present application includes a base, a lens support body, a driving magnet, a driving coil, a blade group, a magnetic conductive sheet, and a ball. The base has a housing cavity; at least a portion of the lens support body is movably arranged inside the housing cavity; there are multiple driving magnets, which are arranged on the circumferential side wall of the lens support body, and at least two of the multiple driving magnets are symmetrically arranged relative to the lens support body; there are multiple driving coils, and the driving coils are arranged on the side wall of the base corresponding to the driving magnets, and the driving magnets and the driving coils are mutually induced to rotate the lens support body relative to the base; the first end of the blade group is arranged at the top of the base, and the second end of the blade group is connected to the lens support body so that the second end of the blade group can rotate relative to the first end of the blade group; the magnetic conductive sheet is arranged on the side of one of the driving coils away from the driving magnet; there are multiple balls, and the multiple balls are divided into two groups, and the two groups of balls are respectively arranged on both sides of the magnetic conductive sheet, and the balls are located between the base and the lens support body.

[0029] When using the variable aperture drive motor in the present application, since it has a drive coil and a drive magnet, and the drive coil is arranged on the base, and the drive magnet is arranged on the lens support body, after the drive coil is energized, the lens support body can rotate relative to the base in the accommodating cavity under the interaction between the drive coil and the drive magnet. Moreover, during the rotation of the lens support body, the lens support body can drive the blade group to rotate, thereby changing the opening diameter of the blade group, and then changing the aperture of the camera device. Therefore, the variable aperture drive motor in the present application effectively solves the problem of the aperture of the camera module of the electronic device in the prior art that cannot be changed. Moreover, since the variable aperture drive motor also has a magnetic conductive sheet, it can generate an attractive force on the drive magnet through the interaction between the magnetic conductive sheet and the drive magnet close to it, so that the lens support body can be dynamically adsorbed to one side of the base during the movement. That is, when the lens support rotates due to the interaction between the drive coil and the drive magnet, the lens support also moves closer to the side of the base where the magnetic conductive sheet is located due to the interaction between the magnetic conductive sheet and the drive magnet. This improves the driving stability of the variable aperture drive motor and the optical axis accuracy of the variable aperture, while also reducing the lateral posture difference of the structure. Therefore, the variable aperture drive motor of the present application effectively solves the problem of poor performance of the aperture drive device of the camera module of electronic equipment in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0031] Figure 1A schematic structural diagram of a variable aperture drive motor according to a specific embodiment of the present invention is shown;

[0032] Figure 2 Shown Figure 1 Exploded view of the variable aperture drive motor in the image;

[0033] Figure 3 Shown Figure 1 Schematic diagram of the internal structure of the variable aperture drive motor;

[0034] Figure 4 Shown Figure 1 Schematic diagram of the positional relationship between the lens support body and the FPC board of the variable aperture drive motor;

[0035] Figure 5 Shown Figure 1 A schematic structural diagram of a base of a variable aperture drive motor;

[0036] Figure 6 Shown Figure 1 Schematic diagram of the positional relationship between the ball and the slide groove of the variable aperture drive motor;

[0037] Figure 7 Shown Figure 1 A schematic structural diagram of a cover plate of a variable aperture drive motor;

[0038] Figure 8 Shown Figure 1 A schematic structural diagram of the main body of the cover of the variable aperture drive motor;

[0039] Figure 9 Shown Figure 1 Schematic diagram of the structure of the fixed feet and metal parts of the cover of the variable aperture drive motor.

[0040] The above drawings include the following reference numerals:

[0041] 10. Base; 11. Positioning groove; 111. Positioning protrusion; 12. Mounting groove; 121. Mounting opening; 13. Fixed column; 14. Limiting protrusion; 15. Abutting boss; 20. Lens support body; 21. Slide groove; 22. Movable column; 23. Limiting groove; 24. Anti-collision boss; 30. Driving magnet; 40. Driving coil; 50. Blade assembly; 60. Magnetic plate; 70. Ball bearing; 80. Electrical connection component; 81. Conductive connection component; 90. FPC component; 91. FPC board; 911. Positioning notch; 100. Cover; 110. Main body; 120. Fixed foot; 130. Fixed groove; 140. Movable groove; 150. Anti-collision protrusion; 160. Limiting boss; 170. Metal part; 200. Gasket. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0044] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0045] In order to solve the problem of poor performance of the aperture drive device of the camera module of the electronic device in the prior art, the present application provides a variable aperture drive motor, a camera device and an electronic device.

[0046] It should be noted that the electronic device in the present application includes an imaging device, and the imaging device in the present application includes the variable aperture drive motor described below.

[0047] like Figures 1 to 9 As shown, the variable aperture drive motor in the present application includes a base 10 , a lens support 20 , a drive magnet 30 , a drive coil 40 , a blade assembly 50 , a magnetic conductive sheet 60 and a ball 70 . The base 10 has a accommodating cavity; at least a part of the lens support body 20 is movably arranged inside the accommodating cavity; there are multiple driving magnets 30, and the driving magnets 30 are arranged on the circumferential side wall of the lens support body 20, and at least two driving magnets 30 among the multiple driving magnets 30 are symmetrically arranged relative to the lens support body 20; there are multiple driving coils 40, and the driving coils 40 are arranged on the side wall of the base 10 corresponding to the driving magnets 30, and the driving magnets 30 and the driving coils 40 induce each other to make the lens support body 20 rotate relative to the base 10; the first end of the blade group 50 is arranged at the top of the base 10, and the second end of the blade group 50 is connected to the lens support body 20 so that the second end of the blade group 50 can rotate relative to the first end of the blade group 50; the magnetic conductive sheet 60 is arranged on the side of one of the driving coils 40 away from the driving magnet 30; there are multiple balls 70, and the multiple balls 70 are divided into two groups, and the two groups of balls 70 are respectively arranged on both sides of the magnetic conductive sheet 60, and the balls 70 are located between the base 10 and the lens support body 20.

[0048] When using the variable aperture drive motor of the present application, since the drive coil 40 and the drive magnet 30 are disposed on the base 10 and the drive magnet 30 is disposed on the lens support 20, when the drive coil 40 is energized, the lens support 20 can rotate relative to the base 10 within the accommodating cavity due to the interaction between the drive coil 40 and the drive magnet 30. Furthermore, during the rotation of the lens support 20, the lens support 20 can drive the blade assembly 50 to rotate, thereby changing the opening diameter of the blade assembly 50 and, in turn, the aperture of the camera device. Therefore, the variable aperture drive motor of the present application effectively solves the problem of the aperture being unable to be changed in camera modules of electronic devices in the prior art. Furthermore, since the variable aperture drive motor also includes a magnetic conductive sheet 60, the interaction between the magnetic conductive sheet 60 and the adjacent drive magnet 30 generates an attractive force on the drive magnet 30, allowing the lens support 20 to be dynamically attached to one side of the base 10 during movement. That is, when the lens support 20 rotates due to the interaction between the drive coil 40 and the drive magnet 30, the lens support 20 also moves closer to the side of the base 10 where the magnetic conductive sheet 60 is located due to the interaction between the magnetic conductive sheet 60 and the drive magnet 30. This improves the driving stability of the variable aperture drive motor and the optical axis accuracy of the variable aperture, while also reducing the lateral posture error of the structure. Therefore, the variable aperture drive motor of the present application effectively solves the problem of poor performance of the aperture drive device of the camera module of electronic equipment in the prior art.

[0049] It should be noted that the top and bottom ends of the base 10 in this application are defined based on the optical axis of the camera device, and in the following embodiments of this application, the optical axis of the camera device is a vertical direction. Furthermore, the optical axis of the camera device is the same as the optical axis of the variable aperture drive motor.

[0050] In the following embodiments of the present application, there are two driving magnets 30 and two driving coils 40 , and the two driving magnets 30 are disposed opposite to each other, and the two driving coils 40 are disposed opposite to each other.

[0051] Preferably, the variable aperture drive motor further includes an electrical connection assembly 80, at least a portion of which is embedded in the bottom of the base 10. An interaction force is generated between the electrical connection assembly 80 and the drive magnet 30. With this arrangement, the drive magnet 30 in this application simultaneously interacts with the magnetic conductive sheet 60 and also with the electrical connection assembly 80. Furthermore, the direction of the interaction force generated by the drive magnet 30 and the magnetic conductive sheet 60 is perpendicular to the direction of the optical axis, while the direction of the interaction force generated by the electrical connection assembly 80 and the drive magnet 30 is parallel to the direction of the optical axis. Therefore, the direction of the resultant force of the driving magnet 30 and the magnetic conductive sheet 60 and the force generated by the driving magnet 30 and the electrical connection component 80 has an angle greater than 0 degrees and less than 90 degrees with the direction of the optical axis. Therefore, during the rotation of the lens support body 20 relative to the base 10, three-point support is achieved by the resultant force of the force generated by the driving magnet 30 and the magnetic conductive sheet 60 and the force generated by the driving magnet 30 and the electrical connection component 80, as well as the support of the lens support body 20 by the two groups of balls 70, thereby ensuring that the lens support body 20 is not easily offset or tilted during the rotation process, thereby ensuring the stability of the lens support body 20 during the rotation process.

[0052] Meanwhile, it should be pointed out that in the present application, the variable aperture drive motor can be electrically connected to its external circuit structure via the electrical connection component 80 .

[0053] It should be noted that, in a specific embodiment of the present application, multiple balls 70 of the same group are arranged along the Z-axis direction. Moreover, the distances between the two groups of balls 70 and the magnetic conductive sheet 60 are the same. At the same time, the distances between the balls 70 and the two oppositely arranged drive coils 40 are different, and the distance between the balls 70 and the drive coil 40 close to the magnetic conductive sheet 60 is smaller than the distance between the balls 70 and the drive coil 40 far from the magnetic conductive sheet 60. That is to say, in the present application, the two groups of balls 70 are arranged close to the magnetic conductive sheet 60, so that when the magnetic sheet adsorbs the drive magnet 30, the lens support body 20 can abut against the two groups of balls 70.

[0054] Specifically, the variable aperture drive motor of the present application also includes an FPC assembly 90, which is disposed around the circumference of the base 10. The drive coil 40 and the magnetic conductive sheet 60 are respectively disposed on the FPC assembly 90, and the FPC assembly 90 is electrically connected to the electrical connection assembly 80. In a specific embodiment of the present application, the FPC assembly 90 includes two FPC boards 91, each disposed on a side of two oppositely disposed drive magnets 30 facing away from each other, with the magnetic conductive sheet 60 disposed on one of the FPC boards 91. In this embodiment, due to the presence of two oppositely disposed drive coils 40, the provision of two FPC boards 91 ensures that the two drive coils 40 can be more easily electrically connected to the FPC assembly 90. Furthermore, the provision of two separate FPC boards 91 utilizes less material than a single FPC board 91 and helps reduce the overall weight of the variable aperture drive motor.

[0055] In addition, the present application also includes at least one position sensor, which corresponds to one of the drive coils 40 and is arranged on the FPC board 91 and is electrically connected to the FPC board 91, so that the rotation distance of the lens support body 20 can be detected, and the magnitude of the current passing through the two drive coils 40 can also be controlled by the rotation distance of the lens support body 20.

[0056] Preferably, the electrical connection assembly 80 includes a plurality of arcuate conductive connectors 81, which are arranged around the circumference of the lens support 20. This arrangement ensures that both drive magnets 30 can generate induction with the opposing conductive connectors 81, thereby ensuring the stability of the force applied to the lens support 20. Furthermore, this arrangement ensures that the two FPC boards 91 can be more easily electrically connected to the electrical connection assembly 80.

[0057] Optionally, the circumferential sidewall of the base 10 has a plurality of positioning grooves 11, and the drive coil 40 and at least a portion of the FPC board 91 are disposed inside the positioning grooves 11. At the same time, the periphery of the positioning grooves 11 has positioning protrusions 111, and the FPC board 91 has positioning notches 911 corresponding to the positioning protrusions 111. In the present application, since the FPC board 91 is disposed on the circumferential sidewall of the base 10, the positioning grooves 11 are provided to not only facilitate the installation of the FPC board 91, but also to position the FPC board 91 through the cooperation of the positioning protrusions 111 and the positioning notches 911, as well as the positioning grooves 11, thereby ensuring that the FPC board 91 does not move relative to the base 10 during use.

[0058] Preferably, in the present application, the FPC board 91 is embedded in the positioning groove 11 , and the magnetic conductive sheet 60 also has a positioning notch 911 corresponding to the positioning protrusion 111 .

[0059] Specifically, the circumferential inner sidewall of the base 10 is provided with a plurality of mounting grooves 12 corresponding to the two groups of balls 70. Each mounting groove 12 contains at least one ball 70, with at least a portion of the ball 70 located within the mounting groove 12 and at least another portion of the ball 70 protruding from the mounting groove 12. The provision of the mounting grooves 12 ensures that the balls 70 will not be displaced along the axial inner sidewall of the base 10 during rotation of the lens support 20 relative to the base 10, thereby ensuring the stability of the operation of the variable aperture drive motor.

[0060] In a specific embodiment of the present application, the lens support body 20 is provided with two chute grooves 21 corresponding to the two groups of balls 70. The length of the chute grooves 21 is greater than the rotational travel of the lens support body 20 along the circumference of the lens support body 20. Since the balls 70 will contact the chute grooves 21 at different locations during the rotation of the lens support body 20, setting the length of the chute grooves 21 greater than the rotational travel of the lens support body 20 ensures that the balls 70 will not escape from the chute grooves 21 during the rotation of the lens support body 20.

[0061] Preferably, the distance between the bottom surface of the chute 21, which is closer to the center of the lens support 20, and the bottom surface of the mounting groove 12, which is farther from the center of the lens support 20, is greater than the diameter of the ball 70. In other words, in this application, when no force is generated between the magnetic conductive sheet 60 and the driving magnet 30, there is a clearance between the ball 70 and the chute 21. However, when the lens support 20 moves toward the magnetic conductive sheet 60 under the interaction of the magnetic conductive sheet 60 and the driving magnet 30, the ball 70 contacts the bottom of the chute 21.

[0062] Specifically, the variable aperture driving motor further includes a cover plate 100 , which is disposed on the base 10 , and the lens support body 20 is located between the cover plate 100 and the base 10 .

[0063] In a specific embodiment of the present application, the cover plate 100 includes a main body 110 and fixing legs 120. The main body 110 is mounted on the base 10. Multiple fixing legs 120 are provided, arranged along the circumference of the main body 110 and extending toward the base 10. The fixing legs 120 abut against the circumferential outer wall of the base 10, and at least a portion of the FPC assembly 90 is located between the fixing legs 120 and the circumferential outer wall of the base 10. Furthermore, two mounting slots 12 are provided, one corresponding to each of the two sets of balls 70. The mounting slots 12 have mounting openings 121 on the side facing the cover plate 100. A limiting boss 160 is provided on the cover plate 100 corresponding to the mounting openings 121, with the ends of the limiting boss 160 covering the mounting openings 121. This arrangement allows the mutual cooperation between the mounting slots 12 and the limiting boss 160 to limit the position of the balls 70 within the mounting slots 12, thereby ensuring that the balls 70 do not escape from the mounting slots 12. The purpose of providing the mounting opening 121 on the mounting groove 12 is to ensure that the ball 70 can be more easily installed in the mounting groove 12 during the assembly process.

[0064] At the same time, the bottom of the base 10 has a plurality of limiting protrusions 14 extending toward the lens support body 20. The lens support body 20 is provided with a plurality of limiting grooves 23 corresponding to the plurality of limiting protrusions 14. In the circumferential direction of the lens support body 20, the length of the limiting grooves 23 is greater than the length of the limiting protrusions 14. In other words, in the present application, when the lens support body 20 rotates relative to the base 10, there is relative movement between the limiting protrusions 14 and the limiting grooves 23, and the movement distance of the lens support body 20 is limited by the length of the limiting grooves 23.

[0065] Optionally, a plurality of limiting grooves 23 are provided along the circumferential side wall of the lens support body 20 on a side close to the base 10 .

[0066] Preferably, the plurality of limiting protrusions 14 correspond to the plurality of limiting grooves 23 one by one.

[0067] Preferably, the main body 110 is made of plastic material. Further preferably, the fixing legs 120 are made of metal material. It should be noted that, in the present application, the interior of the main body 110 can also be strengthened by embedding metal parts 170. And the metal parts and the fixing legs 120 can be an integrally molded structure. By setting it in this way, the structural strength of the cover plate 100 can be guaranteed while the production cost of the cover plate 100 can be reduced. In addition, it can prevent the structural deformation of the cover plate 100 from interfering with the blades and the rotating columns on the rotating carrier, which affects the opening and closing of the blades. At the same time, it can also improve the connection stability and firmness of related components. First, the connection between the cover plate 100 and the base 10 is reinforced by embedding the metal fixing legs 120. Second, the embedded metal connecting legs are clamped with the FPC board 91, which can assist in positioning the FPC board 91 and the magnetic conductive sheet 60, while improving the connection stability of the FPC board 91 and simplifying the assembly process between the FPC and the base 10.

[0068] Specifically, the base 10 has a plurality of fixed columns 13 for mounting the blade assembly 50, and the cover plate 100 has a plurality of fixed grooves 130 on the side facing the lens support body 20 corresponding to the plurality of fixed columns 13. In addition, the lens support body 20 has a plurality of movable columns 22 for mounting the blade assembly 50, and the cover plate 100 has a plurality of movable grooves 140 on the side facing the lens support body 20 corresponding to the plurality of movable columns 22. By providing the fixed grooves 130 and the movable grooves 140, it is ensured that the cover plate 100 can avoid the fixed columns 13 and the movable columns 22 respectively, that is, in the present application, there is no contact between the fixed grooves 130 and the fixed columns 13, and between the movable grooves 140 and the movable columns 22. At the same time, such a setting can also effectively prevent the blade assembly 50 from falling off the fixed columns 13 or the movable columns 22. Therefore, in the present application, the fixed grooves 130 and the movable grooves 140 can also play a role in limiting the position of the blade assembly 50.

[0069] like Figure 8 As shown, in a specific embodiment of the present application, the main body 110 has a fixed groove 130 , a movable groove 140 , an anti-collision protrusion 150 and a limiting boss 160 .

[0070] Optionally, the cover plate 100 has at least one anti-collision protrusion 150 on the side facing the lens support 20. The anti-collision protrusion 150 can effectively limit the position of the lens support 20, thereby effectively preventing the movable column 22 from colliding with the cover plate 100 and affecting the driving of the blade assembly 50.

[0071] Optionally, the bottom of the base 10 further has a plurality of abutment bosses 15 extending toward the lens support 20. The bottom surface of the lens support 20 abuts against the abutment bosses 15, and the height of the abutment bosses 15 is less than the height of the limiting protrusions 14. The provision of the abutment bosses 15 can effectively reduce the contact area between the lens support 20 and the base 10, thereby reducing the friction between the lens support 20 and the base 10 during the rotation of the lens support 20 relative to the base 10, ensuring smoother rotation of the lens support 20.

[0072] Optionally, the circumferential side wall of the lens support body 20 is provided with at least two anti-collision bosses 24 extending radially along the lens support body 20, and the two anti-collision bosses 24 are arranged on both sides of the driving magnet 30 corresponding to the driving coil 40 in the two oppositely arranged driving coils 40 where the magnetic conductive sheet 60 is not provided.

[0073] Optionally, the variable aperture driving motor further includes a spacer 200 , which is disposed between the blade assembly 50 and the lens support 20 .

[0074] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0075] 1. Effectively solve the problem of poor performance of the aperture drive device of the camera module of the electronic device in the prior art;

[0076] 2. Simple structure and stable performance.

[0077] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0078] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0079] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0080] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A variable aperture drive motor, characterized in that: include: A base (10), the base (10) having a receiving cavity; a lens support body (20), at least a portion of the lens support body (20) being movably disposed inside the accommodating cavity; A driving magnet (30), wherein the driving magnet (30) is multiple, the driving magnet (30) is arranged on the circumferential side wall of the lens support body (20), and at least two of the multiple driving magnets (30) are symmetrically arranged relative to the lens support body (20); a driving coil (40), wherein the driving coil (40) is multiple, and the driving coil (40) is arranged on the side wall of the base (10) corresponding to the driving magnet (30), and the driving magnet (30) and the driving coil (40) are mutually induced to rotate the lens support body (20) relative to the base (10); a blade assembly (50), wherein a first end of the blade assembly (50) is arranged at the top end of the base (10), and a second end of the blade assembly (50) is connected to the lens support body (20), so that the second end of the blade assembly (50) can rotate relative to the first end of the blade assembly (50); a magnetic conductive sheet (60), the magnetic conductive sheet (60) being arranged on a side of one of the driving coils (40) away from the driving magnet (30); A plurality of balls (70) are provided, and the plurality of balls (70) are divided into two groups. The two groups of balls (70) are respectively arranged on both sides of the magnetic conductive sheet (60), and the balls (70) are located between the base (10) and the lens support body (20); The variable aperture drive motor further includes an electrical connection component (80), at least a portion of which is embedded in the bottom of the base (10), and an interaction force exists between the electrical connection component (80) and the drive magnet (30).

2. The variable aperture drive motor according to claim 1, wherein: The electrical connection assembly (80) comprises a plurality of arc-shaped conductive connecting members (81), and the plurality of conductive connecting members (81) are arranged around the circumference of the lens support body (20).

3. The variable aperture drive motor according to claim 1, wherein: The variable aperture drive motor further includes an FPC assembly (90), the FPC assembly (90) being arranged around the circumference of the base (10), the drive coil (40) and the magnetic conductive sheet (60) being respectively arranged on the FPC assembly (90), and the FPC assembly (90) being electrically connected to the electrical connection assembly (80).

4. The variable aperture drive motor according to claim 3, wherein: The FPC assembly (90) comprises two FPC boards (91), the two FPC boards (91) being respectively arranged on sides of two oppositely arranged driving magnets (30) that are away from each other, and the magnetic conductive sheet (60) being arranged on one of the FPC boards (91).

5. The variable aperture drive motor according to claim 4, wherein: The circumferential side wall of the base (10) has a plurality of positioning grooves (11), and at least a portion of the driving coil (40) and the FPC board (91) are arranged inside the positioning grooves (11).

6. The variable aperture drive motor according to claim 5, wherein: The periphery of the positioning groove (11) has a positioning protrusion (111), and the FPC board (91) has a positioning notch (911) corresponding to the positioning protrusion (111).

7. The variable aperture drive motor according to claim 1, wherein: The plurality of balls (70) in the same group are arranged along the Z-axis direction; and / or The distances between the two groups of balls (70) and the magnetic conductive sheet (60) are the same; and / or The distances between the ball (70) and the two oppositely arranged drive coils (40) are different, and the distance between the ball (70) and the drive coil (40) close to the magnetic conductive sheet (60) is smaller than the distance between the ball (70) and the drive coil (40) far from the magnetic conductive sheet (60).

8. The variable aperture drive motor according to claim 3, wherein: The circumferential inner side wall of the base (10) is respectively provided with a plurality of mounting grooves (12) corresponding to the two groups of the balls (70), and at least one ball (70) is provided in each of the mounting grooves (12). At least a portion of the ball (70) is located inside the mounting groove (12), and at least another portion of the ball (70) protrudes from the mounting groove (12).

9. The variable aperture drive motor according to claim 8, wherein: The lens support body (20) is provided with two slide grooves (21) corresponding to the two groups of balls (70), and in the circumferential direction of the lens support body (20), the length of the slide groove (21) is greater than the rotation stroke of the lens support body (20).

10. The variable aperture drive motor according to claim 9, wherein: The distance between the bottom surface of the sliding groove (21) on the side close to the center of the lens support body (20) and the bottom surface of the mounting groove (12) on the side away from the center of the lens support body (20) is greater than the diameter of the ball (70).

11. The variable aperture drive motor according to claim 8, wherein: The variable aperture drive motor further comprises a cover plate (100), wherein the cover plate (100) is arranged on the base (10), and the lens support body (20) is located between the cover plate (100) and the base (10).

12. The variable aperture drive motor according to claim 11, wherein: The cover plate (100) comprises: A main body (110), the main body (110) being covered on the base (10); A plurality of fixing feet (120) are provided, the plurality of fixing feet (120) being arranged along the circumference of the main body (110) and extending toward the base (10), the fixing feet (120) being in contact with the circumferential outer wall of the base (10), and at least a portion of the FPC assembly (90) being located between the fixing feet (120) and the circumferential outer wall of the base (10).

13. The variable aperture drive motor according to claim 12, wherein: The main body (110) is made of plastic material; and / or The fixing foot (120) is made of metal material.

14. The variable aperture drive motor according to claim 11, wherein: The base (10) has a plurality of fixing columns (13) for mounting the blade assembly (50), and the cover plate (100) has a plurality of fixing grooves (130) on a side facing the lens support body (20) corresponding to the plurality of fixing columns (13); and / or The lens support body (20) has a plurality of movable columns (22) for mounting the blade assembly (50), and the cover plate (100) has a plurality of movable grooves (140) corresponding to the plurality of movable columns (22) on a side facing the lens support body (20); and / or The cover plate (100) has at least one anti-collision protrusion (150) on a side facing the lens support body (20).

15. The variable aperture drive motor according to claim 11, wherein: There are two mounting grooves (12), and the two mounting grooves (12) correspond one to one with the two groups of balls (70). The mounting groove (12) has a mounting opening (121) on one side facing the cover plate (100). The cover plate (100) is provided with a limiting boss (160) corresponding to the mounting opening (121), and the end of the limiting boss (160) covers the mounting opening (121).

16. The variable aperture drive motor according to any one of claims 1 to 15, characterized in that: The bottom of the base (10) has a plurality of limiting protrusions (14) extending toward the lens support body (20), and the lens support body (20) is provided with a plurality of limiting grooves (23) corresponding to the plurality of limiting protrusions (14), and in the circumferential direction of the lens support body (20), the length of the limiting grooves (23) is greater than the length of the limiting protrusions (14).

17. The variable aperture drive motor according to claim 16, wherein: The plurality of limiting grooves (23) are arranged along the circumferential side wall of the lens support body (20) on a side close to the base (10).

18. The variable aperture drive motor according to claim 16, wherein: The bottom of the base (10) further comprises a plurality of abutment bosses (15) extending toward the lens support body (20), the bottom surface of the lens support body (20) abuts against the abutment bosses (15), and the height of the abutment bosses (15) is less than the height of the limiting protrusions (14).

19. The variable aperture drive motor according to any one of claims 1 to 15, characterized in that: The circumferential side wall of the lens support body (20) is provided with at least two anti-collision bosses (24) extending in the radial direction of the lens support body (20), and the two anti-collision bosses (24) are provided on both sides of the driving magnets (30) corresponding to the driving coils (40) that are not provided with the magnetic conductive sheet (60) in the two oppositely arranged driving coils (40).

20. The variable aperture drive motor according to any one of claims 1 to 15, characterized in that: The variable aperture drive motor further comprises a gasket (200), wherein the gasket (200) is arranged between the blade assembly (50) and the lens support body (20).

21. A camera device, characterized in that: The imaging device includes the iris diaphragm drive motor according to any one of claims 1 to 20.

22. An electronic device, characterized in that: The electronic device includes the imaging device according to claim 21.

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