Variable aperture drive motor, camera device, and electronic device

Abstract

The application provides a variable aperture driving motor, a camera device and an electronic device. The variable aperture driving motor comprises a base assembly, the base assembly having a receiving cavity; a lens support body, at least a part of the lens support body being movably arranged inside the receiving cavity; a vane group, a first end of the vane group being arranged at a top end of the base assembly, a second end of the vane group being connected with the lens support body, so that the second end of the vane group can rotate relative to the first end of the vane group; a vibration assembly, at least a part of the vibration assembly being arranged on the base assembly, and the vibration assembly being capable of vibrating relative to the base assembly between an initial position and a first direction and between the initial position and a second direction; and a transmission assembly, at least a part of the transmission assembly being arranged on the vibration assembly and being drivingly connected with the lens support body, the vibration assembly and the transmission assembly being capable of relative movement under the action of friction. The application solves the problem of poor use performance of the variable aperture driving device in the prior art.

Description

Technical Field

[0001] This invention relates to the field of camera devices, and more specifically, to a variable aperture drive motor, a camera device, and an electronic device. Background Technology

[0002] The aperture size of a mobile phone camera is an important factor affecting the photo quality. A large aperture camera allows more light to enter the camera module, shortening the shutter speed and making it suitable for shooting moving objects. It also has a shallow depth of field, which can be used to blur the background and highlight the subject. On the other hand, a small aperture camera has a longer shutter speed, making it suitable for shooting car trails and star trails. It also has a deeper depth of field, ensuring that objects within a wide depth range are sharp.

[0003] Current variable aperture systems primarily use a voice coil motor (VCM) to drive blades to adjust the aperture size. However, because voice coil motors are susceptible to electromagnetic interference, the aperture adjustment accuracy of variable aperture systems is relatively poor.

[0004] Therefore, existing technologies suffer from poor performance of variable aperture drive devices. Summary of the Invention

[0005] The main objective of this invention is to provide a variable aperture drive motor, a camera device, and an electronic device to solve the problem of poor performance of existing variable aperture drive devices.

[0006] To achieve the above objectives, according to one aspect of the present invention, a variable aperture drive motor is provided, comprising: a base assembly having a receiving cavity; a lens support having at least a portion movably disposed inside the receiving cavity; a blade assembly having a first end disposed at the top of the base assembly and a second end connected to the lens support such that the second end of the blade assembly can rotate relative to the first end of the blade assembly; a vibration assembly having at least a portion disposed on the base assembly and capable of vibrating relative to the base assembly between an initial position and a first direction, and between an initial position and a second direction; and a transmission assembly having at least a portion disposed on the vibration assembly and drivenly connected to the lens support, wherein the vibration assembly and the transmission assembly can move relative to each other under the action of friction, and the direction of movement of the transmission assembly when the vibration assembly vibrates between the initial position and the first direction is opposite to the direction of movement of the transmission assembly when the vibration assembly vibrates between the initial position and the second direction.

[0007] Furthermore, the vibration assembly includes: a vibration part capable of vibrating relative to the base assembly between an initial position and a first direction, and between an initial position and a second direction; a drive rod, one end of which is connected to the vibration part and moves together with the vibration part; at least a portion of a transmission assembly is sleeved on the drive rod, and the transmission assembly is capable of moving along the end of the drive rod near the vibration part or the end of the drive rod away from the vibration part.

[0008] Furthermore, the first direction and the second direction are opposite and parallel to the axis of the drive rod.

[0009] Furthermore, the vibration assembly also includes a fixing part, which is disposed on the base assembly and has a vibration space. The vibration part is disposed within the vibration space and has a buffer gap between it and the inner sidewall of the fixing part.

[0010] Furthermore, the fixing part includes: a first fixing member; a second fixing member, the first fixing member and the second fixing member forming a vibration space, and the drive rod passing through the end of the second fixing member near the first fixing member and connecting to the vibration part.

[0011] Furthermore, the base assembly is provided with an installation opening corresponding to the fixing part, and the inner surface of the installation opening is provided with a positioning structure corresponding to the first fixing member and the second fixing member respectively, and the first fixing member and the second fixing member respectively cooperate with the corresponding positioning structure.

[0012] Furthermore, the positioning structure corresponding to the first fixing member is a positioning post extending radially along the base assembly, the first fixing member bypasses the positioning post and extends toward the second fixing member; and / or the positioning structure corresponding to the second fixing member is a positioning protrusion provided on the bottom surface of the mounting opening, the second fixing member is provided with a positioning hole corresponding to the positioning protrusion.

[0013] Furthermore, the second fixing member is U-shaped and includes a first section, a second section and a third section connected in sequence. The first section and the first fixing member form a vibration space. The two ends of the drive rod pass through the first section and the third section respectively. The second section has a positioning hole.

[0014] Furthermore, the vibration assembly also includes at least two elastic elements, with at least one elastic element provided on the side of the vibration part facing the first direction and on the side of the vibration part facing the second direction, respectively.

[0015] Furthermore, at least a portion of the transmission assembly is wound around the drive rod along the axial direction of the drive rod of the vibration assembly, and at least another portion of the transmission assembly has a snap ring, through which the transmission assembly is driven to be connected to the lens support.

[0016] Furthermore, the circumferential sidewall of the lens support is provided with a connecting post corresponding to the snap ring. The snap ring is sleeved on the connecting post. When the transmission component drives the lens support to rotate, the connecting post abuts against different positions of the inner periphery of the snap ring.

[0017] Furthermore, the connecting column is made of metal or ceramic materials.

[0018] Furthermore, the variable aperture drive motor also includes: a Hall element, which is disposed on the base assembly; and a Hall magnet, which is disposed on the lens support corresponding to the Hall element.

[0019] Furthermore, the variable aperture drive motor also includes a housing that covers the base assembly, and the housing has a magnetic area at the position corresponding to the Hall magnet.

[0020] Furthermore, the variable aperture drive motor also includes a gear assembly, at least a portion of which is disposed on the lens support and at least another portion of which is disposed on the base assembly. When the lens support rotates relative to the base assembly, the portion of the gear assembly located on the lens support moves relative to the portion of the gear assembly located on the base assembly.

[0021] According to another aspect of the present invention, a camera device is provided, which includes the aforementioned variable aperture drive motor.

[0022] According to another aspect of the present invention, an electronic device is provided, which includes the above-described camera device.

[0023] Applying the technical solution of this invention, the variable aperture drive motor in this application includes a base assembly, a lens support, a blade assembly, a vibration assembly, and a transmission assembly. The base assembly has a receiving cavity; at least a portion of the lens support is movably disposed inside the receiving cavity; a first end of the blade assembly is disposed at the top of the base assembly, and a second end of the blade assembly is connected to the lens support, so that the second end of the blade assembly can rotate relative to the first end of the blade assembly; at least a portion of the vibration assembly is disposed on the base assembly, and the vibration assembly is capable of vibrating relative to the base assembly between an initial position and a first direction, and between an initial position and a second direction; at least a portion of the transmission assembly is disposed on the vibration assembly and is drivenly connected to the lens support, and the vibration assembly and the transmission assembly can move relative to each other under the action of friction, and the direction of movement of the transmission assembly when the vibration assembly vibrates between the initial position and the first direction is opposite to the direction of movement of the transmission assembly when the vibration assembly vibrates between the initial position and the second direction.

[0024] When using the variable aperture drive motor of this application, the vibration component can vibrate between the initial position and the first direction or between the initial position and the second direction when the direction of the current flowing through the vibration component is different. Furthermore, due to the friction between the vibration component and the transmission component, the transmission component can move in opposite directions when the vibration direction of the vibration component is different. This allows the transmission component to drive the lens support to rotate clockwise or counterclockwise, thereby changing the aperture size of the blade assembly through the rotation of the lens support. Moreover, since this application uses the cooperation of the vibration component and the transmission component instead of the traditional cooperation of the driving magnet and the driving coil, the variable aperture motor of this application is not subject to electromagnetic interference, thus effectively ensuring aperture adjustment accuracy. Therefore, the variable aperture motor of this application has the advantages of stable performance and high aperture adjustment accuracy. Thus, the aperture drive motor of this application effectively solves the problem of poor performance in existing variable aperture drive devices. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0026] Figure 1 A schematic diagram of a variable aperture drive motor according to a specific embodiment of the present invention is shown;

[0027] Figure 2 An exploded view of the variable aperture drive motor in 1 is shown;

[0028] Figure 3 A schematic diagram of the internal structure of the variable aperture drive motor in Figure 1 is shown.

[0029] Figure 4 A schematic diagram showing the positional relationship between the base assembly, lens support, and vibration assembly of the variable aperture drive motor in section 1 is provided.

[0030] Figure 5 It shows Figure 4 Top view;

[0031] Figure 6 It shows Figure 4 Side view;

[0032] Figure 7 A schematic diagram of the lens support structure for the variable aperture drive motor in section 1 is shown.

[0033] Figure 8 A schematic diagram showing the positional relationship between the base assembly, vibration assembly, transmission assembly, and Hall element of the variable aperture drive motor in Figure 1 is provided.

[0034] Figure 9 A schematic diagram showing the positional relationship between the vibration component and the transmission component of the variable aperture drive motor in Figure 1 is shown.

[0035] The above figures include the following reference numerals:

[0036] 10. Base assembly; 11. Mounting opening; 111. Positioning structure; 12. Base body; 13. Top cover; 131. Rotating column; 20. Lens support; 21. Connecting column; 22. Actuating column; 30. Blade assembly; 31. Adjusting blade; 40. Vibration assembly; 41. Vibrating part; 42. Drive rod; 43. Fixing part; 431. First fixing member; 432. Second fixing member; 4321. Positioning hole; 4322. First section; 4323. Second section; 4324. Third section; 44. Elastic element; 50. Transmission assembly; 51. Snap ring; 60. Hall element; 61. Hall magnet; 70. Housing; 71. Magnetic area; 80. Gear assembly; 81. Gear ring; 82. Gear set; 90. Coated sheet; 100. Top cover; 200. Gasket. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] 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 one of ordinary skill in the art to which this application pertains.

[0039] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0040] To address the poor performance of existing variable aperture drive devices, this application provides a variable aperture drive motor, a camera device, and an electronic device.

[0041] It should be noted that the electronic device in this application has a camera device, and the camera device in this application has the following variable aperture drive motor.

[0042] like Figures 1 to 9As shown, the variable aperture drive motor of this application includes a base assembly 10, a lens support 20, a blade assembly 30, a vibration assembly 40, and a transmission assembly 50. The base assembly 10 has a receiving cavity; at least a portion of the lens support 20 is movably disposed inside the receiving cavity; a first end of the blade assembly 30 is disposed at the top of the base assembly 10, and a second end of the blade assembly 30 is connected to the lens support 20 so that the second end of the blade assembly 30 can rotate relative to the first end of the blade assembly 30; at least a portion of the vibration assembly 40 is disposed on the base assembly 10, and the vibration assembly 40 is capable of vibrating relative to the base assembly 10 between an initial position and a first direction, and between an initial position and a second direction; at least a portion of the transmission assembly 50 is disposed on the vibration assembly 40 and is drivenly connected to the lens support 20. The vibration assembly 40 and the transmission assembly 50 can move relative to each other under the action of friction, and the direction of movement of the transmission assembly 50 when the vibration assembly 40 vibrates between the initial position and the first direction is opposite to the direction of movement of the transmission assembly 50 when the vibration assembly 40 vibrates between the initial position and the second direction.

[0043] When using the variable aperture drive motor of this application, the vibration component 40 can vibrate between the initial position and the first direction or between the initial position and the second direction when the direction of the current flowing through the vibration component 40 is different. Furthermore, due to the friction between the vibration component 40 and the transmission component 50, the transmission component 50 can move in opposite directions when the vibration direction of the vibration component 40 is different. This allows the transmission component 50 to drive the lens support 20 to rotate clockwise or counterclockwise, thereby changing the aperture size of the blade assembly 30 through the rotation of the lens support 20. Moreover, since the cooperation of the vibration component 40 and the transmission component 50 replaces the traditional cooperation of the driving magnet and the driving coil in this application, the variable aperture motor of this application is not subject to electromagnetic interference, thus effectively ensuring aperture adjustment accuracy. Therefore, the variable aperture motor of this application has the advantages of stable performance and high aperture adjustment accuracy. Thus, the aperture drive motor of this application effectively solves the problem of poor performance in existing variable aperture drive devices.

[0044] In one specific embodiment of this application, the vibration assembly 40 includes a vibration part 41 and a drive rod 42. The vibration part 41 is capable of vibrating relative to the base assembly 10 between an initial position and a first direction, and between an initial position and a second direction. One end of the drive rod 42 is connected to the vibration part 41 and moves with the vibration part 41. At least a portion of the transmission assembly 50 is sleeved on the drive rod 42, and the transmission assembly 50 is capable of moving along the end of the drive rod 42 near the vibration part 41 or away from the vibration part 41. Preferably, the first direction and the second direction are opposite and parallel to the axial direction of the drive rod 42. With this arrangement, when the vibration part 41 vibrates, the vibration part 41 can drive the drive rod 42 to vibrate along the axial direction of the drive rod 42. At this time, under the action of friction, the transmission assembly 50 can move along the axial direction of the drive rod 42. And as the direction of the current flowing through the vibration assembly 40 changes, the transmission assembly 50 can move along the axial direction of the drive rod 42 in a direction close to or away from the drive part, thereby ensuring that the transmission assembly 50 can drive the lens support 20 to rotate in a clockwise or counterclockwise direction.

[0045] It should be noted that the initial position of the vibration component 40 in this application generally refers to the position of the vibration part 41 when it is not powered on.

[0046] Furthermore, in this application, the vibrating part 41 may include a piezoelectric ceramic and a corresponding electrical conduction circuit. By changing the direction of the current in the electrical conduction circuit, the vibration direction of the piezoelectric ceramic can be changed. Also, in this application, the driving rod 42 may be made of a high-hardness, lightweight material. The purpose of choosing a lightweight material is to facilitate the output of power from the piezoelectric ceramic to the driving rod 42, while the high hardness is chosen to ensure that the vibrating rod does not deform during the vibration of the vibrating part 41, thereby ensuring the vibration effect of the vibration assembly 40, or in other words, ensuring that the driving rod 42 has approximately the same displacement as the vibrating part 41 during vibration. Preferably, the driving rod 42 is made of ceramic material or a carbon rod. Of course, in this application, the driving rod 42 may also be made of other polymer materials, such as PEEK.

[0047] Optionally, the vibration assembly 40 further includes a fixing part 43, which is disposed on the base assembly 10 and has a vibration space. The vibration part 41 is disposed within the vibration space and has a buffer gap between it and the inner sidewall of the fixing part 43. This arrangement ensures that the vibration part 41 can vibrate only within the vibration space, thereby ensuring the stability of the vibration assembly 40 in driving the transmission assembly 50, and thus ensuring the accuracy of the aperture size adjustment.

[0048] Specifically, the fixing part 43 includes a first fixing member 431 and a second fixing member 432. The first fixing member 431 and the second fixing member 432 form a vibration space. The drive rod 42 passes through the end of the second fixing member 432 near the first fixing member 431 and is connected to the vibration part 41. It should be noted that although the drive rod 42 passes through the second fixing member 432 in this application, the drive rod 42 will still vibrate axially relative to the second fixing member 432. Furthermore, by providing the second fixing member 432, the drive rod 42 can be limited, thereby ensuring the direction of movement of the drive rod 42 when it vibrates together with the vibration part 41.

[0049] Optionally, the base assembly 10 is provided with an installation opening 11 corresponding to the fixing part 43, and the inner surface of the installation opening 11 is provided with positioning structures 111 corresponding to the first fixing member 431 and the second fixing member 432, respectively. The first fixing member 431 and the second fixing member 432 respectively cooperate with the corresponding positioning structures 111. By providing the installation opening 11, sufficient installation space can be provided for the vibration assembly 40, thereby ensuring the compactness of the internal structure of the base assembly 10 and facilitating the miniaturization design of the aperture drive motor. The positioning structures 111 ensure the stability of the fixing part 43 during installation.

[0050] In one specific embodiment of this application, the positioning structure 111 corresponding to the first fixing member 431 is a positioning post extending radially along the base assembly 10. The first fixing member 431 bypasses the positioning post and extends toward the second fixing member 432. The positioning structure 111 corresponding to the second fixing member 432 is a positioning protrusion provided on the bottom surface of the mounting opening 11. The second fixing member 432 is provided with a positioning hole 4321 corresponding to the positioning protrusion. Furthermore, the second fixing member 432 is U-shaped and includes a first segment 4322, a second segment 4323, and a third segment 4324 connected in sequence. The first segment 4322 and the first fixing member 431 form a vibration space. The two ends of the drive rod 42 pass through the first segment 4322 and the third segment 4324 respectively. The second segment 4323 has a positioning hole 4321.

[0051] Specifically, the vibration assembly 40 further includes at least two elastic elements 44, with at least one elastic element 44 respectively provided on the side of the vibration part 41 facing the first direction and on the side of the vibration part 41 facing the second direction. By providing the elastic elements 44, both ends of the elastic elements 44 can abut against the first fixing member 431 and the vibration part 41 respectively, or both ends of the elastic elements 44 can abut against the positioning post and the vibration part 41 respectively, thereby enabling the elastic elements 44 to provide a certain elastic preload to the vibration part 41, which in turn facilitates the output of driving force by the vibration part 41, while ensuring the reliability of the movement of the vibration part 41, and playing a buffering role when the aperture drive motor is subjected to external impact, and preventing structural vibration and abnormal noise.

[0052] Alternatively, the elastic element 44 may be made of silicone, rubber or foam material.

[0053] In one specific embodiment of this application, at least a portion of the transmission assembly 50 is wound around the drive rod 42 along the axial direction of the drive rod 42 of the vibration assembly 40, and at least another portion of the transmission assembly 50 has a retaining ring 51. The transmission assembly 50 is drivenly connected to the lens support 20 through the retaining ring 51. It should be noted that in this application, the transmission assembly 50 is not fixedly mounted on the drive rod 42, and there is friction between the transmission assembly 50 and the drive rod 42. This ensures that the transmission assembly 50 does not reciprocate with the drive rod 42 during the vibration of the vibration part 41, but moves in a single direction under the action of friction, thereby enabling the aperture adjustment of the blade group 30. The retaining ring 51 ensures the stability of the connection between the transmission assembly 50 and the lens support 20.

[0054] Optionally, the snap ring 51 extends radially along the lens support 20.

[0055] Optionally, a connecting post 21 is provided on the circumferential sidewall of the lens support 20 corresponding to the locking ring 51. The locking ring 51 is sleeved on the connecting post 21. When the transmission assembly 50 drives the lens support 20 to rotate, the connecting post 21 abuts against different positions of the inner periphery of the locking ring 51. In a specific embodiment of this application, the axial direction of the drive rod 42 is parallel to the tangential direction of the lens support 20. Therefore, the annular space of the locking ring 51 needs to be larger than the cross-section of the connecting post 21 to ensure that when the transmission assembly 50 moves along the axial direction of the drive rod 42, the connecting post 21 can move relative to the locking ring 51 within the annular space of the locking ring 51, thereby ensuring that the transmission assembly 50 can drive the lens support 20 to rotate. Preferably, the circumferential outer sidewall of the connecting post 21 is provided with two spaced-apart positioning flanges, and the locking ring 51 is sleeved on the portion of the connecting post 21 between the two positioning flanges.

[0056] In one specific embodiment of this application, the circumferential sidewall of the lens support has a connecting groove, and the connecting post 21 is disposed within the connecting groove. Of course, in this application, the circumferential sidewall of the lens support may also have a connecting protrusion, and the connecting protrusion may have a connecting groove.

[0057] Optionally, the connecting post 21 can be made of metal or ceramic. This design effectively reduces the friction between the snap ring 51 and the connecting post 21, thereby ensuring that the transmission assembly 50 can drive the lens support 20 more smoothly.

[0058] Specifically, the variable aperture drive motor further includes a Hall element 60 and a Hall magnet 61. The Hall element 60 is disposed on the base assembly 10; the Hall magnet 61 is disposed on the lens support 20 corresponding to the Hall element 60. The variable aperture drive motor also includes a housing 70, which covers the base assembly 10, and a magnetic region 71 is provided on the housing 70 at the position corresponding to the Hall magnet 61. By setting the Hall element 60 and the Hall magnet 61, the position of the lens support 20 can be detected in real time, thereby controlling the energization of the vibration component 40 to achieve closed-loop control. In a specific embodiment of this application, the top surface and sidewalls of the housing 70 are provided with magnetic regions 71 at the positions corresponding to the Hall magnet 61, thereby providing lateral and optical axis attraction forces to the lens support 20, thus ensuring the stability of the lens support 20. In this application, the housing 70 and the base assembly 10 can be fixed together by adhesive dispensing, thereby improving the connection strength between the housing 70 and the base assembly 10. Furthermore, a coating 90 can be provided on the top of the housing 70 to reduce the interference of glare at the light entrance aperture on the lens imaging effect.

[0059] Specifically, the variable aperture drive motor also includes a gear assembly 80. At least a portion of the gear assembly 80 is disposed on the lens support 20, and at least another portion of the gear assembly 80 is disposed on the base assembly 10. When the lens support 20 rotates relative to the base assembly 10, the portion of the gear assembly 80 on the lens support 20 moves relative to the portion of the gear assembly 80 on the base assembly 10. When using the variable aperture drive motor of this application, because it has a gear assembly 80, and at least a portion of the gear assembly 80 is disposed on the lens support 20, and at least another portion of the gear assembly 80 is disposed on the base assembly 10, the displacement accuracy of the rotational drive of the blade assembly 30 can be improved through the action of the gear assembly 80 when the lens support 20 drives the blade assembly 30 to move together relative to the base assembly 10 and performs aperture adjustment. Furthermore, by using the gear assembly 80 in this application, the problems existing in the prior art using ball bearing support can also be solved: due to the small contact area between the rolling surface of the ball and the lens support 20, ball groove pits will be generated on the surface of the lens support 20, or the lens support 20 will become eccentric after the ball wears down. Eccentricity of the lens support 20 will cause problems such as blade rotation jamming and low roundness of the aperture hole, affecting driving performance and aperture shooting effect. The gear assembly 80 used in this application can effectively solve the above problems, thereby improving the blade driving performance and the roundness of the aperture hole.

[0060] In one specific embodiment of this application, the gear assembly 80 includes a gear ring 81 and a gear set 82. The gear ring 81 is disposed around the circumferential outer wall of the lens support 20; the gear set 82 is disposed on the base assembly 10 and meshes with the gear ring 81. When the lens support 20 rotates relative to the base assembly 10, the gear set 82 moves relative to the gear ring 81 circumferentially. In this application, because the meshing method of the gear ring 81 and the gear set 82 is better than that of the ball bearings in the prior art, the gear set 82 and the gear ring 81 have better machining accuracy and meshing accuracy, thus improving the displacement accuracy of the rotation drive of the variable aperture blades. Furthermore, in this embodiment, the actual movement process is that the lens support 20 drives the gear ring 81 to move together. At this time, there is relative movement between the gear ring 81 and the gear assembly 80, and the gear set 82 can mesh with the gear ring 81 at different positions, thereby ensuring the aperture adjustment accuracy.

[0061] Preferably, there are at least two gear sets 82, which are spaced apart on the base assembly 10. This arrangement ensures more stable force distribution between the lens support 20 and the base assembly 10 when the lens support 20 moves relative to the base assembly 10, thereby guaranteeing the performance of the variable aperture drive motor in this application.

[0062] Optionally, at least a portion of the gear ring 81 is embedded inside the lens support 20, and at least another portion of the gear ring 81 is exposed outside the lens support 20, with the gear set 82 meshing with the exposed portion of the gear ring 81. This arrangement effectively ensures the stability of the connection between the gear ring 81 and the lens support 20, thereby ensuring that the lens support 20 can drive the gear ring 81 to move together. It also ensures that there is no relative movement between the lens support 20 and the gear ring 81 during the rotation of the lens support 20 relative to the base. Furthermore, this arrangement allows for a more compact internal structure of the variable aperture drive motor, facilitating miniaturization design.

[0063] Specifically, the gear set 82 includes at least two bearings, a mounting shaft, and a gear body. The two bearings are spaced apart on the base assembly 10; both ends of the mounting shaft are connected to different bearings; the gear body is fitted onto the rotating shaft and meshes with the gear ring 81. This arrangement ensures a more stable connection between the gear set 82 and the base assembly 10. Preferably, the base assembly 10 has corresponding mounting grooves for each of the two bearings.

[0064] Preferably, the axial direction of the mounting shaft is parallel to the axial direction of the lens support 20. This arrangement effectively reduces the frictional force experienced by the lens support 20 when it moves relative to the base assembly 10.

[0065] Optionally, at least one of the gear ring 81, bearing, mounting shaft, and gear body is made of at least one of ceramic or non-magnetic metal materials. This arrangement can further effectively reduce the frictional force experienced by the lens support 20.

[0066] Optionally, the gear ring 81 is disposed on one side of the lens support 20 near the bottom end of the base assembly 10. This arrangement effectively ensures a more compact internal structure for the variable aperture drive motor.

[0067] In one specific embodiment of this application, the base assembly 10 includes a base body 12 and a top cover 13. The top cover 13 covers the top of the base body 12 and forms a receiving cavity with the base body 12. The blade assembly 30 is disposed on the side of the top cover 13 away from the lens support 20, and the portion of the gear assembly 80 disposed on the base assembly 10 is connected to both the base body 12 and the top cover 13. Furthermore, in this embodiment, one of the two bearings of the gear assembly 82 is disposed on the top cover 13, while the other bearing is disposed on the bottom surface of the base body 12. Additionally, a top cover 100 may be disposed between the top cover and the outer casing, and a gasket 200 may be disposed between the blade assembly and the top cover.

[0068] Specifically, the blade assembly 30 includes multiple adjusting blades 31. The lens support 20 is equipped with different actuating posts 22 corresponding to different adjusting blades 31, and the upper cover 13 is equipped with different rotating posts 131 corresponding to different adjusting blades 31. The adjusting blades 31 are connected to their respective actuating posts 22 and rotating posts 131 and can move together with the lens support 20. The upper cover 13 is equipped with different blade steps corresponding to different adjusting blades 31, and the rotating posts 131 are set on the blade steps. Two adjacent adjusting blades 31 are stacked on top of each other, and the height of the blade step corresponding to the lower adjusting blade 31 is smaller than the height of the blade step corresponding to the upper adjusting blade 31. By setting the blade steps, a better overlap effect between two adjacent adjusting blades 31 can be ensured, and it can be ensured that different adjusting blades 31 will not get stuck when adjusting the aperture size.

[0069] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0070] 1. Effectively solves the problem of poor performance of variable aperture drive devices in existing technologies;

[0071] 2. Simple structure and stable performance.

[0072] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0073] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0074] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A variable aperture drive motor, characterized in that, include: A base assembly (10) having a receiving cavity; A lens support (20), at least a portion of which is movably disposed inside the receiving cavity; A blade assembly (30) has a first end disposed at the top of the base assembly (10) and a second end connected to the lens support (20) so that the second end of the blade assembly (30) can rotate relative to the first end of the blade assembly (30). A vibration assembly (40), at least a portion of which is disposed on the base assembly (10), the vibration assembly (40) comprising: a vibration part (41) and a drive rod (42), the vibration part (41) comprising piezoelectric ceramic, the vibration part (41) being capable of vibrating relative to the base assembly (10) between an initial position and a first direction, and between the initial position and a second direction; A transmission assembly (50) is provided on the vibration assembly (40) and drivenly connected to the lens support (20). The vibration assembly (40) and the transmission assembly (50) can move relative to each other under the action of friction. When the vibration assembly (40) vibrates between the initial position and the first direction, the direction of movement of the transmission assembly (50) is opposite to the direction of movement of the transmission assembly (50) when the vibration assembly (40) vibrates between the initial position and the second direction. One end of the drive rod (42) is connected to the vibration part (41) and moves together with the vibration part (41). At least a portion of the transmission assembly (50) is sleeved on the drive rod (42), and the transmission assembly (50) can move along the drive rod (42) at one end close to the vibration part (41) or at one end of the drive rod (42) away from the vibration part (41).

2. The variable aperture drive motor according to claim 1, characterized in that, The first direction is opposite to the second direction and is parallel to the axis of the drive rod (42).

3. The variable aperture drive motor according to claim 1, characterized in that, The vibration assembly (40) further includes a fixing part (43), which is disposed on the base assembly (10) and has a vibration space. The vibration part (41) is disposed in the vibration space and has a buffer gap between it and the inner sidewall of the fixing part (43).

4. The variable aperture drive motor according to claim 3, characterized in that, The fixing part (43) includes: First fastener (431); The second fixing member (432) and the first fixing member (431) together form the vibration space. The drive rod (42) passes through the second fixing member (432) and is close to one end of the first fixing member (431) and connected to the vibration part (41).

5. The variable aperture drive motor according to claim 4, characterized in that, The base assembly (10) is provided with an installation opening (11) corresponding to the fixing part (43), and the inner surface of the installation opening (11) is provided with a positioning structure (111) corresponding to the first fixing member (431) and the second fixing member (432), respectively. The first fixing member (431) and the second fixing member (432) cooperate with the corresponding positioning structure (111).

6. The variable aperture drive motor according to claim 5, characterized in that, The positioning structure (111) corresponding to the first fixing member (431) is a positioning post extending radially along the base assembly (10), the first fixing member (431) bypassing the positioning post and extending toward the second fixing member (432); and / or The positioning structure (111) corresponding to the second fixing member (432) is a positioning protrusion provided on the bottom surface of the mounting opening (11), and the second fixing member (432) is provided with a positioning hole (4321) corresponding to the positioning protrusion.

7. The variable aperture drive motor according to claim 5, characterized in that, The second fixing member (432) is U-shaped and includes a first segment (4322), a second segment (4323) and a third segment (4324) connected in sequence. The first segment (4322) and the first fixing member (431) form the vibration space. The two ends of the drive rod (42) pass through the first segment (4322) and the third segment (4324) respectively. The second segment (4323) has a positioning hole (4321).

8. The variable aperture drive motor according to claim 3, characterized in that, The vibration assembly (40) further includes at least two elastic elements (44), and at least one elastic element (44) is provided on the side of the vibration part (41) facing the first direction and on the side of the vibration part (41) facing the second direction.

9. The variable aperture drive motor according to any one of claims 1 to 8, characterized in that, At least a portion of the transmission assembly (50) is wound around the drive rod (42) of the vibration assembly (40) along the axial direction, and at least another portion of the transmission assembly (50) has a snap ring (51), and the transmission assembly (50) is driven to be connected to the lens support (20) through the snap ring (51).

10. The variable aperture drive motor according to claim 9, characterized in that, The lens support (20) has a connecting post (21) on its circumferential sidewall corresponding to the snap ring (51). The snap ring (51) is sleeved on the connecting post (21). When the transmission assembly (50) drives the lens support (20) to rotate, the connecting post (21) abuts against different positions of the inner periphery of the snap ring (51).

11. The variable aperture drive motor according to claim 10, characterized in that, The connecting column (21) is made of metal or ceramic material.

12. The variable aperture drive motor according to any one of claims 1 to 8, characterized in that, The variable aperture drive motor also includes: Hall element (60), said Hall element (60) is disposed on said base assembly (10); A Hall magnet (61) is disposed on the lens support (20) corresponding to the Hall element (60).

13. The variable aperture drive motor according to claim 12, characterized in that, The variable aperture drive motor also includes a housing (70), which covers the base assembly (10), and the housing (70) has a magnetic area (71) at the position corresponding to the Hall magnet (61).

14. The variable aperture drive motor according to any one of claims 1 to 8, characterized in that, The variable aperture drive motor also includes a gear assembly (80), at least a portion of which is disposed on the lens support (20) and at least another portion of which is disposed on the base assembly (10). When the lens support (20) rotates relative to the base assembly (10), the portion of the gear assembly (80) located on the lens support (20) moves relative to the portion of the gear assembly (80) located on the base assembly (10).

15. A camera device, characterized in that, The camera device includes a variable aperture drive motor as described in any one of claims 1 to 14.

16. An electronic device, characterized in that, The electronic device includes the camera device as described in claim 15.

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