Control assembly for opening and closing aperture, aperture driving device and camera module

Abstract

The invention relates to a control assembly for opening and closing an aperture, an aperture driving device and a camera module, and the control assembly comprises an aperture support and a plurality of aperture blades which simultaneously move relative to the aperture support in a plane perpendicular to an optical axis. A light inlet hole is defined by the multiple aperture blades, the aperture blades are connected with aperture blade driving shafts which drive the aperture blades to move so as to change the aperture of the light inlet hole, and at least one elastic control piece with a plurality of driving shaft gears is arranged on the aperture support. And the aperture blade driving shaft on any aperture blade is located in any driving shaft gear, so that light inlet holes with different apertures are defined by the aperture blades. The aperture blade driving device has the advantages that the aperture blade driving shaft is clamped by the elastic control piece, so that the aperture blade driving shaft is fixed at any driving gear, and the aperture blade is kept still under the condition of a specific light inlet hole size. The mechanical elastic clamping mode can stabilize the position of the aperture blade under the condition of no power on or no magnetic attraction, and meanwhile, different opening and closing diameters are realized according to the fact that the driving shaft enters different gears.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of electronic equipment camera, and particularly relates to a control assembly for aperture opening and closing, an aperture driving device and a camera module. BACKGROUND

[0002] In mobile phone photography, the concept of aperture driving device is somewhat different from that of traditional cameras, but it is still an important component in mobile phone cameras.

[0003] The aperture driving in mobile phones is usually motorized and controlled by the system. In most cases, the opening and closing of the aperture is achieved by a small motor connected to the camera module.

[0004] The image processing algorithm in the mobile phone adjusts the size of the aperture according to the intensity of the ambient light, the shooting scene and the mode selected by the user, to achieve the best exposure and effect.

[0005] In the prior art, the stability of the blades and rotating parts in the variable aperture structure is generally achieved by magnetic attraction. However, the magnetic attraction method does not have stable fixing performance and can cause vibration under external factors, which can change the size of the aperture. At the same time, in the process of use, the system needs to use current control to keep the aperture blades stable at all times in order to keep the aperture opening and closing stable. With the passage of time and the increase of use frequency, the magnetic force of the magnetic attraction structure will gradually decrease, which will cause the stability of the blades to decrease, thereby affecting the rapid response performance of the aperture. SUMMARY

[0006] The purpose of the present application is to solve the above technical problems by providing a control assembly for aperture opening and closing, an aperture driving device and a camera module.

[0007] To achieve the above purpose, the present application adopts the following technical solutions:

[0008] The control assembly for aperture opening and closing comprises an aperture support and a plurality of aperture blades that move simultaneously relative to the aperture support in a plane perpendicular to the optical axis. A plurality of aperture blades enclose a light entrance hole and are connected to an aperture blade driving shaft that drives the movement of the aperture blades to change the aperture of the light entrance hole. At least one elastic control member with a plurality of driving shaft positions is provided on the aperture support. The aperture blade driving shaft on any aperture blade is in any driving shaft position, so that the aperture blades enclose light entrance holes with different apertures.

[0009] Further, the elastic control member is any one of a closed ring member and a non-closed ring member.

[0010] Further, the elastic control member comprises spring clamps, a plurality of clamping grooves are arranged on the inner sides of the two opposite clamping arms of the spring clamps respectively, and the clamping grooves arranged on the inner side of one of the clamping arms and the clamping grooves arranged on the inner side of the other clamping arm form a plurality of driving shaft gears.

[0011] Further, the inner diameter of the driving shaft gear is smaller than the outer diameter of the aperture blade driving shaft.

[0012] Further, the elastic control member is connected to a fixing ring, and the fixing ring is fixed to the aperture support.

[0013] Further, a circumferential locking mechanism is arranged between the fixing ring and the aperture support to prevent the circumferential rotation of the fixing ring relative to the aperture support.

[0014] Further, the circumferential locking mechanism comprises a first blocking wall arranged on the aperture support, and a connecting arm connecting the fixing ring and the elastic control member, and the connecting arm abuts against the first blocking wall; the circumferential locking mechanism further comprises a second blocking wall arranged on the aperture support, and an elastic arm abutting against the second blocking wall is arranged on the aperture support.

[0015] Further, an avoiding groove is arranged on the aperture support to avoid the elastic control member and make the elastic control member in a suspended state, and the first blocking wall and the second blocking wall are at least part of the groove walls of the avoiding groove respectively.

[0016] The application further provides an aperture driving device, which comprises the control assembly and the rotating driving assembly for aperture opening and closing, and an aperture driving frame for driving the aperture blades to move and change the aperture diameter, and the rotating driving assembly drives the aperture driving frame to rotate relative to the aperture support.

[0017] The application further provides a camera module, which comprises the aperture driving device.

[0018] Compared with the prior art, the application has the advantages that the aperture blade driving shaft is clamped and fixed by the elastic control member, so that the aperture blade driving shaft is controlled in any driving shaft gear, the aperture blades are kept still in the corresponding aperture by the mechanical elastic clamping, the aperture blades can be fixed in different positions without power supply and magnetic attraction, and the aperture blade driving shaft can enter different driving shaft gears to realize different opening and closing diameters. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the assembled main structure of the aperture driving device of the application;

[0020] Figure 2 Assembled bottom view of the main structure of the aperture driving device of the present application;

[0021] Figure 3 Detail front view of the main structure of the control assembly for aperture opening and closing of the present application;

[0022] Figure 4 Exploded detail view of the main structure of the aperture driving device of the present application;

[0023] Figure 5 Assembled schematic A view of the internal components of the aperture driving device of the present application;

[0024] Figure 6 Assembled schematic B view of the internal components of the aperture driving device of the present application;

[0025] Figure 7 Assembled schematic C view of the internal components of the aperture driving device of the present application;

[0026] Figure 8 Sequential view of the longitudinal section components of the aperture driving device of the present application;

[0027] Figure 9 Schematic D view of the driving principle of the aperture control components of the present application;

[0028] Figure 10 Schematic E view of the driving principle of the aperture control components of the present application;

[0029] Figure 11 Illustrative view of a closed loop elastic control member;

[0030] Figure 12 Illustrative view A of a non-closed loop elastic control member;

[0031] Figure 13 Illustrative view B of another non-closed loop elastic control member;

[0032] Figure 14 Locking combination of the second circumferential locking mechanism 34;

[0033] Figure 15 Configuration view of the blade integrated linkage assembly;

[0034] Figure 16 Illustrative view of the camera module electronic device in Example Three.

[0035] The aperture support 1, the escape groove 10, the blade cover plate 11, the support cover plate 12, the first guard 13, the second guard 14, the motion guide column 15, the limit part entering groove 16, the limit part locking groove 17, the aperture blade 2, the aperture blade drive shaft 20, the guide waist hole 21, the connecting rod 22, the strip-shaped positioning hole 23, the matching protrusion 24, the elastic control piece 3, the drive shaft gear 30, the first gear 301, the second gear 302, the third gear 303, the spring clamp 31, the clamping arm 32, the clamping groove 320, the fixing ring 33, the circumferential locking mechanism 34, the first blocking wall 340, the connecting arm 341, the second blocking wall 342, the elastic arm 35, the elastic limit part 36, the aperture drive frame 4, the sliding ball 40, the rotary drive assembly 5, the memory alloy wire 50, the transition dial ring 51, the fixed rotary shaft 52, the dial rod 53, the optical axis Z. DETAILED DESCRIPTION

[0036] The application will be further described below in conjunction with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the application, and not to limit the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings, not all the structures.

[0037] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] Example 1

[0041] The control components for opening and closing the aperture use a mechanical elastic clamping method to keep several aperture blades 2 stationary in their respective positions.

[0042] Specifically, the control components include an aperture support 1 as a carrier, and several aperture blades 2 that move simultaneously relative to the aperture support 1 in a plane perpendicular to the optical axis Z. The several aperture blades 2 surround the light entrance hole and are connected to an aperture blade drive shaft 20 that drives the aperture blades 2 to move and thus change the aperture diameter of the light entrance hole.

[0043] To ensure that the aperture blades 2 are fixed relative to the aperture support 1 at different positions, such as Figures 3-4 As shown, an elastic control element 3 with several drive shaft positions 30 is designed on the aperture support 1. The elastic control element 3 is connected to a fixed ring 33. The fixed ring 33 is, for example, a circular ring, a C-shaped ring, or an arc shape, or of course, other shapes. The fixed ring 33 is fixed to the aperture support 1, and the aperture blade drive shaft 20 on any aperture blade 2 is in any drive shaft position 30.

[0044] Secondly, in this embodiment, the number of elastic control elements 3 is less than the number of aperture blades 2. Of course, the number of elastic control elements 3 can also be equal to the number of aperture blades 2.

[0045] In one implementation, since the aperture blades 2 move synchronously, only a single elastic control element 3 is designed to cooperate with a single aperture blade drive shaft 20 for control. Using a single elastic control element 3 reduces the number of components, simplifies the aperture's structural design, and helps reduce manufacturing and assembly complexity, while also lowering costs. However, the number of combinations of the above structures can be appropriately increased according to actual working conditions to meet different usage requirements and aperture adjustment flexibility. Furthermore, the design of the elastic control element 3 allows for smooth transitions between different settings.

[0046] Specifically, the elastic control component 3 is either a closed ring-shaped component or a non-closed ring-shaped component formed by metal sheet etching or other methods. The closed ring-shaped component is, for example, an approximately rectangular component. In another embodiment, this example uses a non-closed ring-shaped component, for example, a U-shaped component. This embodiment illustrates the structural characteristics of a non-enclosed annular component. The non-enclosed annular component design of the elastic control element 3 endows it with a certain adaptive elasticity. When the clamping arm 32 is subjected to external impact or vibration, its elasticity and flexibility ensure that the clamping device remains in a stable working state. The main body of the elastic control element 3 is composed of a spring clamp 31 with a pair of clamping arms 32. The clamping arms 32 have a serpentine curved structure, so the inner sides of the two opposing clamping arms 32 are respectively provided with a number of clamping grooves 320. The clamping grooves 320 on the inner side of one clamping arm 32 and the clamping grooves 320 on the inner side of the other clamping arm 32 form a number of drive shaft positions 30, so that each position corresponds to a different aperture opening, such as the first position 301, the second position 302, and the third position 303, etc. It is also possible to set only two positions or more than three positions.

[0047] In this configuration, the aperture blade drive shaft 20 is positioned in any drive shaft position 30. As shown in the figure, the distance L1 between the clamping arms 32 between the two positions is less than L2, and the inner diameter of the drive shaft position 30 is less than the outer diameter of the aperture blade drive shaft 20. When the aperture blade drive shaft 20 is in a certain drive shaft position 30, the two clamping arms 32 can restrict the movement of the aperture blade drive shaft 20, achieving the effect of a fixed aperture position. Of course, under the driving force, the aperture blade drive shaft 20 expands the pair of clamping arms 32, allowing the aperture blade drive shaft 20 to move from the first position 301 to the second position 302.

[0048] Specifically, the clamping arm 32 is elastic. When the aperture blade drive shaft 20 is not affected by external force, it will be in one of the three positions: the first position 301, the second position 302, and the third position 303. The external force cannot move the aperture blade drive shaft 20. The aperture blade drive shaft 20 can move from one position to another under the drive of the aperture drive frame 4. During the transition, the aperture blade drive shaft 20 will widen the clamping arm 32. However, due to the elastic effect, the clamping arm 32 will return to its original state after the aperture blade drive shaft 20 has completed the movement. The implementation of this design can realize a multi-stage aperture adjustment mechanism without adding too much complexity.

[0049] At the same time, such as Figure 7 As shown, in order to prevent the elastic control element 3 from rotating circumferentially relative to the aperture support 1, a circumferential locking mechanism 34 is provided between the fixed ring 33 and the aperture support 1.

[0050] The first method: Specifically, the circumferential locking mechanism 34 includes a first blocking wall 340 disposed on the aperture bracket 1, and a connecting arm 341 disposed on the fixed ring 33 in cooperation with the first blocking wall 340. The connecting arm 341 also has the function of connecting the elastic control member 3 and the fixed ring 33. In this embodiment, the connecting arm 341 and the first blocking wall 340 only restrict the elastic control member 3 from rotating in one direction, either clockwise or counterclockwise.

[0051] To prevent the elastic control element 3 from rotating in the other direction, the control assembly for opening and closing the aperture is also provided with a second blocking wall 342 and an elastic arm 35 that cooperates with the second blocking wall 342. The cooperation of the second blocking wall 342 and the elastic arm 35, as well as the cooperation of the connecting arm 341 with the first blocking wall 340, makes the elastic control element 3 completely fixed on the aperture support 1. The presence of this circumferential locking mechanism 34 ensures that there is no risk of circumferential rotation of the elastic control element 3 on the aperture support 1, making the corresponding position control of the aperture blades 2 more precise and stable, thereby improving the accuracy and consistency of aperture adjustment.

[0052] The second method: such as Figure 14 As shown, the circumferential locking mechanism 34 includes an elastic limiting part 36 that cooperates with the aperture bracket 1. The aperture bracket 1 has a limiting part entry groove 16 and a limiting part locking groove 17 that cooperate with the elastic limiting part 36. The elastic limiting part 36 is a cantilevered arc-shaped elastic limiting part. The elastic limiting part 36 can enter the limiting part locking groove 17 from the limiting part entry groove 16 without damage. The suspended end face of the elastic limiting part 36 abuts against one side of the locking groove 17, while the outer arc-shaped surface of the elastic limiting part 36 abuts against the other side of the locking groove 17. Here, one side and the other side are two oppositely distributed groove walls.

[0053] In this embodiment, the aperture support 1 is provided with a clearance groove 10 to avoid the elastic control member 3. The design of the clearance groove 10 can reduce the space occupied by the elastic control member 3 inside the aperture support 1, thereby making the overall structure more compact. The elastic control member 3 can also be set on the top surface of the aperture support 1, and the clearance groove 10 to avoid the elastic control member 3 is opened on the top surface of the aperture support 1. At the same time, when the clearance groove 10 is opened, the groove wall of the clearance groove 10 is formed as a first blocking wall 340 and a second blocking wall 342. The two opposite groove walls of the clearance groove 10 not only serve as a clearance structure (providing installation space for the elastic control member 3), but also integrate the functions of the first blocking wall 340 and the second blocking wall 342, reducing the number of parts and reducing manufacturing and assembly costs. In this design, the clearance groove 10 of the aperture support 1 not only improves the compactness of the overall structure, but also effectively integrates the various components of the aperture adjustment system.

[0054] Example 2

[0055] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference lies in that, in relation to the control component for aperture opening and closing in Embodiment 1, the aperture driving device in this embodiment includes a control component for aperture opening and closing.

[0056] An aperture drive mechanism is a device used to control the opening and closing of aperture blades in a camera or other optical equipment. The primary function of the aperture is to regulate the amount of light entering the sensor or film, thereby affecting the exposure and depth of field of a photograph.

[0057] In automatic or semi-automatic mode, the camera's aperture drive automatically adjusts the aperture size based on feedback from the internal metering system. For example, in bright light, the drive will cause the aperture blades to close to reduce the amount of light entering the camera.

[0058] In this embodiment, the aperture blade drive shaft 20 described in Embodiment 1 is vertically inserted through the aperture bracket 1. An aperture drive frame 4, connecting all the aperture blade drive shafts 20, is disposed inside the aperture bracket 1. The aperture drive frame 4 rotates relative to the aperture bracket 1, causing all the aperture blades 2 to move in a circular motion around the optical axis Z, thereby changing the aperture size. Specifically, the aperture drive frame 4 drives the aperture blade drive shaft 20. The aperture blade drive shaft 20, positioned in the drive shaft stop 30, is fixed within a few predetermined stops due to the constraint of the elastic control member 3. In other embodiments, the aperture blade drive shaft 20 does not need to penetrate the aperture bracket 1 but is connected to the aperture drive frame 4.

[0059] As another way, such as Figure 15 As shown, the aperture blade 2 is provided with a connecting rod 22 having an aperture blade drive shaft 20. The connecting rod 22 is fixed to the aperture blade 2 by a concave-convex connection structure. For example, the concave-convex connection structure has a strip-shaped positioning hole 23 on the aperture blade 2 and a mating protrusion 24 on the connecting rod 22 that inserts into the strip-shaped positioning hole 23. Of course, the positions of the strip-shaped positioning hole 23 and the mating protrusion 24 can be interchanged. Each aperture blade 2 has two aperture blade drive shafts 20. The elastic control member 3 can clamp and limit any one aperture blade drive shaft 20 or clamp and limit multiple aperture blade drive shafts 20 simultaneously. One aperture blade drive shaft 20 on each aperture blade 2 is slidably connected to the aperture support 1 in the circumferential direction, and the other aperture blade drive shaft 20 and the aperture support 1 slide relative to each other in a direction that is angular to both the radial and circumferential directions of the aperture support 1. One of the aperture blade drive shafts 20 is connected to the aperture drive frame 4.

[0060] A sliding ball bearing 40 is also provided between the aperture drive frame 4 and the aperture support 1. The sliding ball bearing 40 is used to support the aperture drive frame 4, so that there is a certain space between the aperture drive frame 4 and the aperture support 1, and to reduce the rotational friction between the aperture drive frame 4 and the aperture support 1, thereby improving stability and reducing energy consumption.

[0061] The aperture drive frame 4 is driven by the rotary drive assembly 5, such as... Figure 5 As shown, the rotation drive assembly 5 consists of two shape memory alloy wires 50 arranged in a "V" shape. The rotation of the aperture drive frame 4 is achieved by expanding and contracting the shape memory alloy wires 50. Conductive terminals are connected to both ends of each shape memory alloy wire 50, and these terminals are connected to an external control system. In other embodiments, the rotation drive assembly 5 can also be an electromagnetic drive assembly. A magnet is placed in one of the aperture drive frame 4 and the aperture support 1, and a coil is placed in the other, opposite the magnet. Current is passed through the coil to cause the aperture drive frame 4 to rotate relative to the aperture support 1.

[0062] Specific driving principles, such as Figures 9-10 As shown, the two shape memory alloy wires 50 in the rotary drive assembly 5 are both connected to a transition ring 51 at their closer ends. Figure 6 As shown, a fixed rotating shaft 52 is also provided between the two connecting ends, connecting the transition ring 51 and the aperture support 1. Since the two shape memory alloy wires 50 are arranged in a "V" shape, each shape memory alloy wire 50 will form a torque in a different direction with the fixed rotating shaft 52. The other end of the transition ring 51 relative to the fixed rotating shaft 52 is provided with a lever 53, which is connected to the aperture drive frame 4. Due to the expansion and contraction of the two shape memory alloy wires 50, a torque is generated between them and the fixed rotating shaft 52, causing the transition ring 51 to swing around the fixed rotating shaft 52. This allows the lever 53 to drive the aperture drive frame 4 to rotate around the optical axis Z, thereby driving the aperture blades 2 to move.

[0063] The aperture blades 2 are rotatably connected to the aperture blade drive shaft 20. The aperture blades 2 are also provided with an arc-shaped guide waist hole 21. The aperture support 1 is also provided with a motion guide post 15 that cooperates with the guide waist hole 21. The motion guide post 15 is inserted into the guide waist hole 21. When the aperture blades 2 are pushed by the aperture blade drive shaft 20, several aperture blades 2 will move radially around the optical axis Z under the cooperation of the guide waist hole 21 and the motion guide post 15, thereby changing the size of the light entrance hole. In other embodiments, the motion guide post 15 can be connected to the aperture blade 2, the guide waist-shaped hole 21 is opened in the aperture support 1, and the guide post 15 is inserted in the guide waist-shaped hole 21. The control component for opening and closing the aperture can limit the motion guide post 15 in segments. In some embodiments, multiple control components for opening and closing the aperture can be set up to clamp and limit the motion guide post 15 and the aperture blade drive shaft 20 respectively. Alternatively, only one of the motion guide post 15 or the aperture blade drive shaft 20 can be clamped and limited. The motion guide post 15 is just a feature name for easy distinction in the description of this embodiment. The motion guide post 15 and the aperture blade drive shaft 20 have the same structure.

[0064] In some embodiments, the motion guide post 15 is connected to the aperture drive frame 4. In this case, the motion guide post 15 serves as the aperture blade drive shaft 20 in the above embodiment, while the original aperture blade drive shaft 20 can be fixedly connected to the aperture support 1 and rotate relative to the aperture blades 2. The control component for aperture opening and closing clamps and limits the motion guide post 15.

[0065] In this embodiment, as Figures 1-2 As shown, the aperture blades 2 are set on the top surface of the aperture support 1, and blade cover plates 11 and support cover plates 12 are also set on the top and bottom surfaces of the aperture support 1. On the top surface of the aperture support, the blade cover plate not only protects the aperture blades, but also prevents dust and moisture from entering the aperture (the same applies to the support cover plate 12), thereby ensuring the sensitivity and reliability of the aperture.

[0066] Between the aperture drive bracket 4 and the transition ring 51, and between the transition ring 51 and the rotary drive assembly 5, a first protective plate 13 and a second protective plate 14 with partial isolation function are respectively provided. The provision of the first protective plate 13 and the second protective plate 14 improves the structural strength of the aperture bracket 1 to a certain extent, while preventing the spatial independence between the various components and preventing a certain component from loosening and falling off, affecting other components and causing secondary damage.

[0067] Example 3

[0068] The structure and principle of this embodiment are basically the same as those of Embodiment 2. The difference lies in that, for the aperture driving device of Embodiment 2, the camera module of this embodiment includes an aperture driving device.

[0069] like Figure 11 As shown, a camera module is a complete photographic device, typically including multiple components such as a lens, storage medium, display screen, and control panel. Outside the camera module, there are also external housings, control interfaces, displays, memory card slots, etc., forming a complete working system capable of performing various functions such as image capture, real-time preview, storage, playback / transmission, etc., representing a more advanced application.

[0070] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A control assembly for aperture opening and closing, comprising an aperture holder (1), and a plurality of aperture blades (2) moving simultaneously relative to said aperture holder (1) in a plane perpendicular to the optical axis (Z), said plurality of aperture blades (2) enclosing an aperture and aperture blade drive shafts (20) connected to said aperture blades (2) and driving said aperture blades (2) to change the aperture size, characterized in that, At least one elastic control member (3) with a plurality of driving shaft positions (30) is arranged on the aperture holder (1), and the aperture blade driving shaft (20) on any aperture blade (2) is in any driving shaft position (30) so that the aperture blade (2) encloses the light inlet hole with different apertures.

2. The control assembly for aperture opening and closing according to claim 1, wherein, The elastic control member (3) is any one of a closed ring member and an unclosed ring member.

3. The control assembly for aperture opening and closing according to claim 1, wherein, The elastic control member (3) comprises a spring clip (31) with two clamping arms (32), a plurality of clamping grooves (320) are arranged inside at least one clamping arm (32), and a plurality of driving shaft positions (30) are formed between the two clamping arms (32).

4. The control assembly for aperture opening and closing according to claim 1 or 3, characterized in that, Any driving shaft position (30) clamps the aperture blade driving shaft (20) under the clamping of the elastic control member (3).

5. The control assembly for aperture opening and closing according to claim 1, wherein, The elastic control member (3) is connected to a fixed ring (33), and the fixed ring (33) is fixed to the aperture holder (1).

6. The control assembly for aperture opening and closing according to claim 5, wherein, A circumferential locking mechanism (34) is arranged between the fixed ring (33) and the aperture holder (1) to prevent the circumferential rotation of the fixed ring (33) relative to the aperture holder (1).

7. The control assembly for aperture opening and closing according to claim 6, wherein, The circumferential locking mechanism (34) comprises a first blocking wall (340) arranged on the aperture holder (1), and a connecting arm (341) connecting the fixed ring (33) and the elastic control member (3), and the connecting arm (341) abuts against the first blocking wall (340); the circumferential locking mechanism (34) further comprises a second blocking wall (342) arranged on the aperture holder (1), and an elastic arm (35) abutting against the second blocking wall (342) is arranged on the aperture holder (1).

8. The control assembly for aperture opening and closing according to claim 7, wherein, An avoiding groove (10) is arranged on the aperture holder (1) to avoid the elastic control member (3) and make the elastic control member (3) in a suspended state, and the first blocking wall (340) and the second blocking wall (342) are at least part of the groove walls of the avoiding groove (10).

9. An aperture drive apparatus, characterized by, The aperture driving device comprises the control assembly and the rotating driving assembly (5) for aperture opening and closing according to any one of claims 1-8, and an aperture driving frame (4) for driving the aperture blade (2) to move and change the aperture of the light inlet hole, and the rotating driving assembly (5) drives the aperture driving frame (4) to rotate relative to the aperture holder (1).

10. An image capture module, characterized by, The camera module comprises the aperture driving device according to claim 9. The camera module comprises the aperture driving device according to claim 9.

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