Aperture adjusting mechanism, camera module and electronic equipment

Abstract

The invention relates to the technical field of aperture adjustment, in particular to an aperture adjusting mechanism, a camera module and electronic equipment. The aperture adjusting mechanism comprises a base, a driving unit and an aperture, the base is provided with a driving hole, the driving hole extends to the edge of the base, and the aperture is provided with a light through hole. Wherein the aperture is connected with the base, and the aperture can move relative to the base. The driving unit is in transmission connection with the aperture to drive the aperture to adjust the size of the light through hole. The driving unit is provided with a contact surface, the contact surface is located in the driving hole, the contact surface is parallel and opposite to the wall surface of the driving hole, and a mounting gap is formed between the contact surface and the wall surface of the driving hole. According to the aperture adjusting mechanism, surface contact is formed when the driving unit and the base collide, so that chippings generated by collision of the driving unit and the base are reduced, and the situation that black spots are generated during imaging is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aperture adjustment, and particularly relates to an aperture adjustment mechanism, a camera module, and an electronic device. Background Art

[0002] With the development of technology, more and more electronic devices are equipped with camera modules. A camera module is a device for acquiring images, which obtains images of scenes by collecting light reflected by the scenes.

[0003] In the related art, for an electronic device equipped with a camera module, after being used for a period of time, black spots may appear on the acquired images, resulting in a decline in the imaging effect. Summary of the Invention

[0004] In view of this, the present application provides an aperture adjustment mechanism, a camera module, and an electronic device to reduce the occurrence of black spots.

[0005] Specifically, the following technical solutions are included:

[0006] In a first aspect of the present application, an aperture adjustment mechanism is provided. The aperture adjustment mechanism includes a base, a driving unit, and an aperture. The base has a driving hole that extends to the edge of the base, and the aperture has a light passing hole. Among them, the aperture is connected to the base, and the aperture can move relative to the base. The driving unit is in transmission connection with the aperture to be able to drive the aperture to adjust the size of the light passing hole. The driving unit has a contact surface, the contact surface is located in the driving hole, the contact surface is parallel and opposite to the wall surface of the driving hole, and an installation gap is formed between the contact surface and the wall surface of the driving hole.

[0007] Optionally, a first rounded corner is formed on the side of the wall surface of the driving hole close to the installation gap, and the first rounded corner is located at the end of the driving hole.

[0008] Optionally, a second rounded corner is formed at the end of the driving unit extending out of the driving hole.

[0009] Optionally, the driving unit has a buffer portion, the buffer portion is located on the side of the driving unit close to the installation gap, and the contact surface is located on the buffer portion.

[0010] Optionally, the number of the driving holes is at least two, the number of the contact surfaces corresponds to the number of the driving holes, and there is one contact surface in each driving hole.

[0011] Optionally, the aperture includes a first blade and a second blade. The first blade and the second blade enclose the light passing hole. The first blade has a first opening / closing groove, and the second blade has a second opening / closing groove. Both the first blade and the second blade are connected to the base and can rotate relative to the base. The driving unit has a driving rod that extends into the first opening / closing groove and the second opening / closing groove to drive the first blade and the second blade to approach and move away from each other.

[0012] Optionally, the driving unit includes a transmission body and a first driving component. The transmission body is in transmission connection with the first driving component and the aperture. A part of the transmission body extends into the driving hole and can move along the extending direction of the driving hole. The first driving component drives the aperture through the transmission body to adjust the size of the light passing hole.

[0013] Optionally, the first driving component includes a first magnetic part and a first coil. The first magnetic part is fixed to the transmission body, and the first coil and the first magnetic part are arranged opposite to each other along a direction perpendicular to the moving direction of the transmission body.

[0014] Optionally, the aperture adjusting mechanism further includes a first ball. The first ball is located between the transmission body and the base and is in contact with the transmission body and the base respectively.

[0015] Optionally, the base includes a base body, a first movable seat, and a second driving component. The aperture and the driving unit are both connected to the base body. The base body and the first movable seat are stacked in a first direction. The second driving component is connected to the base body to enable the base body to move relative to the first movable seat in a second direction perpendicular to the first direction.

[0016] Optionally, the second driving component includes a second magnetic part and a second coil. The second magnetic part is fixed to the base body, and the second coil and the second magnetic part are arranged opposite to each other along a direction perpendicular to the first direction.

[0017] Optionally, the base further includes a second ball. The second ball is located between the first movable seat and the base body along the first direction and is in contact with the first movable seat and the base body respectively.

[0018] Optionally, the base further includes a second movable seat and a third driving component. The second movable seat and the first movable seat are stacked in the first direction. The third driving component is connected to the base body to enable the base body to drive the first movable seat to move relative to the second movable seat in a third direction perpendicular to both the second direction and the first direction.

[0019] Optionally, the third driving component includes a third magnetic part and a third coil, the third magnetic part is fixed to the base, and the third coil and the third magnetic part are arranged relative to each other along a direction perpendicular to the first direction.

[0020] Optionally, the base further includes a third ball, and the third ball is located between the first movable seat and the second movable seat along the first direction, and abuts against the first movable seat and the second movable seat respectively.

[0021] Optionally, the base also includes a third movable seat and a fourth driving assembly, the third movable seat and the second movable seat are stacked along the first direction, and the fourth driving assembly is respectively connected to the second movable seat and the third movable seat to drive the second movable seat to drive the seat body to move along the first direction.

[0022] Optionally, the fourth driving component includes a fourth magnetic part and a fourth coil, the fourth magnetic part is fixed to the third movable seat, the fourth coil is fixed to the second movable seat, and the fourth coil and the fourth magnetic part are relatively arranged in a direction perpendicular to the first direction.

[0023] Optionally, the base also includes a fourth ball, the second movable seat and the third movable seat are stacked along the first direction, and the fourth ball is located between the third movable seat and the second movable seat along a direction perpendicular to the first direction, and abuts against the third movable seat and the second movable seat respectively.

[0024] A second aspect of the present application provides a camera module, which includes a lens and an aperture adjustment mechanism as described in the above technical solution, and the lens is located at one end of the light hole.

[0025] A third aspect of the present application provides an electronic device, which includes a camera module as described in the above technical solution.

[0026] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the light hole of the aperture can allow light to pass through. The driving unit is connected to the aperture in a transmission manner and drives the aperture so that the amount of light entering the light hole can be adjusted. The driving hole provides a space for the driving unit to move, which is beneficial for the driving unit to drive the aperture to adjust the size of the light hole to adjust the amount of light entering. The contact surface is parallel to and opposite to the wall surface of the driving hole. When the aperture adjustment mechanism of the present application collides, the two can form a surface contact to reduce the pressure when the two collide, thereby reducing the debris generated by the collision between the two, and further reducing the occurrence of black spots.

[0027] In summary, for the aperture adjustment mechanism of the present application, when a collision occurs between the driving unit and the base, a surface contact is formed, thereby reducing the debris generated by the collision between the two, so as to reduce the occurrence of black spots in imaging. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is an exploded view of the structure of an aperture adjustment mechanism provided by an embodiment of the present application;

[0030] Figure 2 It is a full-sectional view of the driving unit assembled in the driving hole provided by an embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of the structure of an aperture adjustment mechanism provided by an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the structure of a driving unit provided by an embodiment of the present application;

[0033] Figure 5 It is a schematic diagram of the structure of an aperture provided by an embodiment of the present application;

[0034] Figure 6 It is an exploded view of the structure of a base provided by an embodiment of the present application;

[0035] Figure 7 It is a full-sectional view of one perspective of a base provided by an embodiment of the present application;

[0036] Figure 8 It is a full-sectional view of another perspective of a base provided by an embodiment of the present application;

[0037] Figure 9 It is a schematic diagram of one perspective of a base provided by an embodiment of the present application;

[0038] Figure 10 It is a schematic diagram of another perspective of a base provided by an embodiment of the present application.

[0039] The reference numerals in the drawings are respectively represented as:

[0040] 100, installation gap;

[0041] 1. Base; 101. Driving hole; 102. Second ball; 103. Third ball; 104. Fourth ball;

[0042] 11. Seat body; 111. First sub - seat; 112. Second sub - seat; 12. First movable seat; 13. Second driving assembly; 131. Second magnetic part; 132. Second coil; 14. Second movable seat; 15. Third driving assembly; 151. Third magnetic part; 152. Third coil; 16. Third movable seat; 17. Fourth driving assembly; 171. Fourth magnetic part; 172. Fourth coil;

[0043] 2. Driving unit; 21. Contact surface; 22. Buffer part; 23. Driving rod; 211. Transmission body; 212. First driving assembly; 2121. First magnetic part; 2122. First coil;

[0044] 3. Aperture; 301. Light - passing hole; 31. First blade; 3101. First opening - closing groove; 32. Second blade; 3201. Second opening - closing groove;

[0045] 4. First ball.

[0046] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0048] The orientation terms involved in the embodiments of the present application, such as "upper", "lower", "side", etc., generally take the relative relationship of the orientation shown in Figure 1 as the reference, and the use of these orientation terms is only to more clearly describe the relationship between structures and structures, rather than to describe the absolute orientation. When the product is placed in different postures, the orientation may change. For example, "upper" and "lower" may be interchanged.

[0049] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as commonly understood by those of ordinary skill in the art. Some technical terms that appear in the embodiments of the present application are described below.

[0050] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0051] A first aspect of this application provides an aperture adjustment mechanism, as Figure 1 and Figure 2 shown. The aperture adjustment mechanism includes a base 1, a driving unit 2, and an aperture 3. The base 1 has a driving hole 101 that extends to the edge of the base 1, and the aperture 3 has a light passing hole 301. Among them, the aperture 3 is connected to the base 1, and the aperture 3 can move relative to the base 1. The driving unit 2 is in transmission connection with the aperture 3 to be able to drive the aperture 3 to adjust the size of the light passing hole 301. The driving unit 2 has a contact surface 21, the contact surface 21 is located in the driving hole 101, the contact surface 21 is parallel and opposite to the wall surface of the driving hole 101, and an installation gap 100 is formed between the contact surface 21 and the wall surface of the driving hole 101.

[0052] It can be understood that the light passing hole 301 of the aperture 3 can allow light to pass through. The driving unit 2 is in transmission connection with the aperture 3 and plays a driving role on the aperture 3, so that the light incident amount of the light passing hole 301 can be adjusted. The driving hole 101 provides a space for the driving unit 2 to move, which is beneficial for the driving unit 2 to drive the aperture 3 to adjust the size of the light passing hole 301 to adjust the light incident amount. The contact surface 21 is parallel and opposite to the wall surface of the driving hole 101. When the aperture adjustment mechanism of this application collides, the two can form a surface contact to reduce the pressure when the two collide, thereby reducing the debris generated by the collision between the two, and further reducing the occurrence of black spots.

[0053] When the aperture adjustment mechanism of this application is applied to an electronic device, after being used for a period of time, black spots may appear in the images obtained by some electronic devices. When studying this problem, the inventor found that the reason for the generation of black spots is that the image sensor of the electronic device is blocked by debris. After a large number of experimental explorations, the inventor summarized that most of the electronic devices with black spots have experienced dropping or collision situations.

[0054] Based on this, the inventor made improvements. Specifically, the inventor found that there is often an installation gap 100 between two relatively movable components, which causes the impact generated by the collision to cause the two components with the installation gap 100 to collide. Since the corners of the two components are relatively sharp, excessive pressure will be generated during the collision, resulting in damage to the components, and then debris will be generated. The debris will adhere to the image sensor as the user uses the electronic device and causes shaking of the electronic device, resulting in the generation of black spots.

[0055] To this end, in the present application, the driving unit 2 is arranged parallel and opposite to the wall surface of the driving hole 101, so that when the electronic device drops or collides, the two can form a surface contact. Under the same collision conditions, the pressure between the driving unit 2 and the driving hole 101 that form a surface contact is smaller than that between the driving unit 2 and the driving hole 101 that do not form a surface contact. Therefore, the situation of breakage and generation of debris is less, and the situation of generating black spots can be reduced.

[0056] In some embodiments of the present application, the base 1 supports the aperture 3 and the driving unit 2. The base 1 can also be used to accommodate and install the lens and support the lens. Light passes through the light passing hole 301 and falls on the lens, and an image can be formed. The base 1 can also move to adjust the position of the aperture 3.

[0057] In some embodiments of the present application, the driving unit 2 drives the aperture 3, and it can drive the aperture 3 to rotate, thereby adjusting the size of the light passing hole 301. In some embodiments of the present application, the size of the light passing hole 301 can be the area or shape of the light passing hole 301.

[0058] In some embodiments of the present application, the aperture 3 controls the light of the light passing hole 301 by controlling the size of the light passing hole 301. The aperture 3 can include a plurality of sub-components, each sub-component has a corresponding rotation center, and adjacent sub-components will block each other when rotating, thereby enclosing the light passing hole 301. The shape of the light passing hole 301 can be a polygon or a circle.

[0059] In summary, the aperture adjustment mechanism of the present application forms a surface contact between the driving unit 2 and the base 1 when a collision occurs, thereby reducing the debris generated by the collision between the two, and reducing the situation of generating black spots in imaging.

[0060] In some embodiments of the present application, a first chamfer is formed on the side of the wall surface of the driving hole 101 close to the installation gap 100, and the first chamfer is located at the end of the driving hole 101. Such a setting can prevent the driving unit 2 from colliding with the end of the driving hole 101 and generating debris.

[0061] It can be understood that since the collision situation is not predictable, the collision position between the wall surface of the driving hole 101 and the driving unit 2 is also not fixed. To prevent the driving unit 2 from colliding with the end of the driving hole 101 and generating debris, a first chamfer is formed on the side of the wall surface of the driving hole 101 close to the installation gap 100, thereby increasing the contact area between the end of the driving hole 101 and the driving unit 2 when a collision occurs.

[0062] In some embodiments of the present application, the end of the driving unit 2 extending from the driving hole 101 forms a second chamfer. Such a setting can prevent the driving unit 2 from colliding with other components and generating debris.

[0063] It can be understood that the second chamfer can smooth the end of the driving unit 2 extending from the driving hole 101, thereby preventing a sharp structure from being formed at this position and colliding with other components to generate debris.

[0064] In some embodiments of the present application, as Figure 2 shown, the driving unit 2 has a buffer portion 22. The buffer portion 22 is located on the side of the driving unit 2 close to the installation gap 100, and the contact surface 21 is located on the buffer portion 22.

[0065] It can be understood that the buffer portion 22 can reduce the size of the installation gap 100, and further reduce the distance between the driving unit 2 and the driving hole 101, which is beneficial to reducing the impact when the two collide.

[0066] Optionally, the buffer portion 22 can be an elastic structure to absorb the impact during collision and reduce the generation of debris.

[0067] In some embodiments of the present application, as Figure 3 shown, the number of driving holes 101 is at least two. The number of contact surfaces 21 corresponds to the number of driving holes 101, and there is a contact surface 21 in each driving hole 101.

[0068] It can be understood that such a setting can enable the base 1 to support multiple positions of the driving unit 2 through the driving holes 101, thereby improving the support stability of the base 1 for the driving unit 2.

[0069] Optionally, the number of driving holes 101 is two, and the two driving holes 101 are arranged at intervals along the moving direction of the driving unit 2.

[0070] Optionally, the number of driving holes 101 can also be 2, 3, 4 or 5, or other numbers.

[0071] In some embodiments of the present application, as Figure 4 and Figure 5 shown, the aperture 3 includes a first blade 31 and a second blade 32. The first blade 31 and the second blade 32 enclose a light passing hole 301. The first blade 31 has a first opening and closing groove 3101, and the second blade 32 has a second opening and closing groove 3201. Both the first blade 31 and the second blade 32 are connected to the base 1 and can rotate relative to the base 1. The driving unit 2 has a driving rod 23, and the driving rod 23 extends into the first opening and closing groove 3101 and the second opening and closing groove 3201 to be able to drive the first blade 31 and the second blade 32 to approach and separate from each other.

[0072] It can be understood that the first blade 31 and the second blade 32 can enclose a light-transmitting hole 301. Both the first blade 31 and the second blade 32 are connected to the base 1, and the positions where they are connected to the base 1 respectively form rotation centers. The driving rod 23 extends into the first opening / closing groove 3101 and the second opening / closing groove 3201. By applying a driving force to the side walls of the first opening / closing groove 3101 and the second opening / closing groove 3201, the first blade 31 and the second blade 32 can be rotated. When the first blade 31 and the second blade rotate and approach each other, the size of the light-transmitting hole 301 will be reduced. When the first blade 31 and the second blade rotate and move away from each other, the size of the light-transmitting hole 301 will be increased. In this way, the light incident amount can be adjusted.

[0073] Optionally, the first opening / closing groove 3101 and the second opening / closing groove 3201 are arranged in parallel, and the first opening / closing groove 3101 and the second opening / closing groove 3201 are symmetrically arranged with respect to the moving direction of the driving rod 23 as the axis of symmetry.

[0074] Optionally, a first notch is formed on the side of the first blade 31 close to the second blade 32, and a second notch is formed on the side of the second blade 32 close to the first blade 31. The first notch and the second notch are connected to form the light-transmitting hole 301.

[0075] In some embodiments of the present application, such as Figure 2 , Figure 3 and Figure 4 shown, the driving unit 2 includes a transmission body 211 and a first driving assembly 212. The transmission body 211 is in transmission connection with the first driving assembly 212 and the aperture 3. A part of the transmission body 211 extends into the driving hole 101 and can move along the extending direction of the driving hole 101. The first driving assembly 212 drives the aperture 3 through the transmission body 211 to adjust the size of the light-transmitting hole 301.

[0076] It can be understood that the transmission body 211 plays a transmission role. The first driving assembly 212 can drive the aperture 3 through the transmission body 211, and then adjust the size of the aperture 3. At the same time, the driving hole 101 of the base 1 can support the transmission body 211, which is beneficial to improving the transmission stability of the transmission body 211.

[0077] Optionally, the first driving assembly 212 can be directly connected to the transmission body 211 to play a transmission role, or can be in transmission connection with the transmission body 211 through other components.

[0078] In some embodiments of the present application, such as Figure 3As shown, the first driving component 212 includes a first magnetic part 2121 and a first coil 2122. The first magnetic part 2121 is fixed to the transmission body 211, and the first coil 2122 and the first magnetic part 2121 are arranged opposite to each other along a direction perpendicular to the moving direction of the transmission body 211.

[0079] It can be understood that when the first coil 2122 is not energized, it has no influence on the first magnetic part 2121, and the transmission body 211 remains in a relatively static state. After the first coil 2122 is energized, due to the existence of a magnetic field in the first magnetic part 2121, it will be affected by the Ampere force. Since the first magnetic part 2121 is fixed to the transmission body 211, the Ampere force will cause the first magnetic part 2121 to drive the transmission body 211 to move, thereby realizing the driving effect on the aperture 3 and adjusting the size of the light passing hole 301.

[0080] In some embodiments of the present application, as Figure 6 shown, the aperture adjusting mechanism further includes a first ball 4. The first ball 4 is located between the transmission body 211 and the base 1 and is in contact with the transmission body 211 and the base 1 respectively.

[0081] It can be understood that the first ball 4 can change the sliding friction between the transmission body 211 and the base 1 into rolling friction, so as to reduce the friction force between the two, which is beneficial for the first driving component 212 to drive the transmission body 211.

[0082] Optionally, there are 4 first balls 4, which are arranged at intervals along the circumferential direction of the transmission body 211.

[0083] In some embodiments of the present application, as Figure 6 and Figure 9 shown, the base 1 includes a base body 11, a first movable seat 12 and a second driving component 13. The aperture 3 and the driving unit 2 are both connected to the base body 11. The base body 11 and the first movable seat 12 are stacked along a first direction. The second driving component 13 is connected to the base body 11 so that the base body 11 can move relative to the first movable seat 12 along a second direction, and the second direction is perpendicular to the first direction. Such a setting is beneficial to improving the adjustment performance of the aperture adjusting mechanism of the present application.

[0084] It can be understood that the base body 11 plays a supporting role for the driving unit 2 and the aperture 3, which is beneficial for the driving unit 2 to drive the aperture 3 to adjust the size of the light passing hole 301. The first movable seat 12 can enable the base body 11 to move relatively under the drive of the second driving component 13, thereby adjusting the position of the aperture 3 to change the light passing through the light passing hole 301 and helping the user to obtain an image that meets the expectations.

[0085] Optionally, as Figure 6As shown, the base 11 may include a first sub-base 111 and a second sub-base 112. The first sub-base 111 is connected to the second sub-base 112. The first sub-base 111 may support the driving unit 2 and the aperture 3, and the second sub-base 112 may be connected to the first movable base 12, thereby driving the aperture 3 and the driving unit 2 to move.

[0086] In some embodiments of the present application, as Figure 9 shown, the second driving assembly 13 includes a second magnetic part 131 and a second coil 132. The second magnetic part 131 is fixed to the base 11, and the second coil 132 and the second magnetic part 131 are arranged opposite to each other in a direction perpendicular to the first direction.

[0087] It can be understood that when the second coil 132 is not energized, it has no influence on the second magnetic part 131, and the transmission body 211 remains in a relatively stationary state. After the second coil 132 is energized, due to the presence of a magnetic field in the second magnetic part 131, it will be affected by the Ampere force. Since the second magnetic part 131 is fixed to the base 11, the Ampere force will cause the second magnetic part 131 to drive the base 11 to move, thereby adjusting the position of the base 11 in the second direction to change the light passing through the light passing hole 301 and helping the user to obtain an image that meets the expectations.

[0088] In some embodiments of the present application, as Figure 7 shown, the base 1 further includes a second ball 102. The second ball 102 is located between the first movable base 12 and the base 11 in the first direction and is in contact with the first movable base 12 and the base 11 respectively.

[0089] It can be understood that the second ball 102 can change the sliding friction between the first movable base 12 and the base 11 into rolling friction, so as to reduce the friction between the two, which is beneficial for the second driving assembly 13 to drive the base 11.

[0090] Optionally, there are 4 first balls 4, which are arranged at intervals along the circumference of the base 11.

[0091] In some embodiments of the present application, as Figure 6 and Figure 9 shown, the base 1 further includes a second movable base 14 and a third driving assembly 15. The second movable base 14 and the first movable base 12 are stacked in the first direction. The third driving assembly 15 is connected to the base 11 so that the base 11 can drive the first movable base 12 to move relative to the second movable base 14 in a third direction, and the third direction is perpendicular to both the second direction and the first direction. Such a setting is beneficial to improving the adjustment performance of the aperture adjustment mechanism of the present application.

[0092] It can be understood that the seat body 11 is driven by the third driving component 15 to drive the first movable seat 12 to move relative to the second movable seat 14 in the third direction, so as to adjust the position of the aperture 3 in the third direction, change the light passing through the light passing hole 301, and help the user obtain an image that meets expectations. In addition, since the first movable seat 12 can be driven by the seat body 11 to move, the situation where the seat body 11 and the first movable seat 12 interfere with each other can be avoided.

[0093] In some embodiments of the present application, such as Figure 9 shown, the third driving component 15 includes a third magnetic part 151 and a third coil 152. The third magnetic part 151 is fixed to the seat body 11, and the third coil 152 and the third magnetic part 151 are arranged opposite to each other in a direction perpendicular to the first direction.

[0094] It can be understood that when the third coil 152 is not energized, it does not affect the third magnetic part 151, and the seat body 11 remains in a relatively static state. After the third coil 152 is energized, due to the existence of a magnetic field in the third magnetic part 151, it will be affected by the Ampere force. Since the third magnetic part 151 is fixed to the seat body 11, the Ampere force will drive the seat body 11 and the first movable seat 12 to move, thereby adjusting the position of the seat body 11 in the third direction, changing the light passing through the light passing hole 301, and helping the user obtain an image that meets expectations.

[0095] In some embodiments of the present application, such as Figure 7 shown, the base 1 further includes a third ball 103. The third ball 103 is located between the first movable seat 12 and the second movable seat 14 in the first direction and abuts against the first movable seat 12 and the second movable seat 14 respectively.

[0096] It can be understood that the third ball 103 can change the sliding friction between the first movable seat 12 and the second movable seat 14 into rolling friction, so as to reduce the friction between the two, which is beneficial to the third driving component 15 to drive the seat body 11.

[0097] Optionally, the number of the third balls 103 is 4, and they are arranged at intervals along the circumferential direction of the first movable seat 12.

[0098] In some embodiments of the present application, such as Figure 6 and Figure 10 shown, the base 1 further includes a third movable seat 16 and a fourth driving component 17. The third movable seat 16 and the second movable seat 14 are stacked in the first direction. The fourth driving component 17 is respectively connected to the second movable seat 14 and the third movable seat 16 to drive the second movable seat 14 to drive the seat body 11 to move in the first direction. Such a setting is beneficial to improving the adjustment performance of the aperture adjustment mechanism of the present application.

[0099] It can be understood that the third movable seat 16 supports the second movable seat 14. Driven by the fourth driving component 17, the second movable seat 14 drives the seat body 11 to move in the first direction, and the position of the aperture 3 can be adjusted to change the light passing through the light passing hole 301, helping the user to obtain an image that meets the expectations.

[0100] In some embodiments of the present application, such as Figure 10 As shown, the fourth driving component 17 includes a fourth magnetic part 171 and a fourth coil 172. The fourth magnetic part 171 is fixed to the third movable seat 16, the fourth coil 172 is fixed to the second movable seat 14, and the fourth coil 172 and the fourth magnetic part 171 are arranged opposite to each other in a direction perpendicular to the first direction.

[0101] It can be understood that when the fourth coil 172 is not energized, it has no influence on the fourth magnetic part 171, and the third movable seat 16 remains in a relatively static state. After the fourth coil 172 is energized, due to the existence of a magnetic field in the fourth magnetic part 171, it will be affected by the Ampere force. Since the fourth magnetic part 171 is fixed to the third movable seat 16, the Ampere force will cause the fourth magnetic part 171 to drive the third movable seat 16 and the seat body 11 to move, thereby adjusting the position of the seat body 11 in the first direction to change the light passing through the light passing hole 301, helping the user to obtain an image that meets the expectations.

[0102] In some embodiments of the present application, such as Figure 8 As shown, the base 1 further includes a fourth ball 104. The second movable seat 14 and the third movable seat 16 are stacked in the first direction. The fourth ball 104 is located between the third movable seat 16 and the second movable seat 14 in a direction perpendicular to the first direction and is in contact with the third movable seat 16 and the second movable seat 14 respectively.

[0103] It can be understood that the fourth ball 104 can change the sliding friction between the third movable seat 16 and the second movable seat 14 into rolling friction, so that the friction between the two can be reduced, which is beneficial to the fourth driving component 17 to drive the third movable seat 16.

[0104] Optionally, the fourth balls 104 are arranged in two rows and spaced apart in the first direction.

[0105] The second aspect of the present application provides an imaging module. The imaging module includes a lens and an aperture adjustment mechanism as described in the above technical solution. The lens is located at one end of the light passing hole 301.

[0106] It can be understood that since the same aperture adjustment mechanism as that in the above embodiment is adopted, the imaging module of the present application has the same technical effects as the above aperture adjustment mechanism, which will not be elaborated here.

[0107] It can be understood that the lens is located at one end of the light passing hole 301 and can change its light intake according to the size change of the light passing hole 301, thereby making the imaging effect of the lens meet the user's expectations.

[0108] The third aspect of the present application provides an electronic device, and the electronic device includes an imaging module as described in the above technical solution.

[0109] It can be understood that since the same imaging module as that in the above embodiment is adopted, the electronic device of the present application has the same technical effects as those in the above embodiment, and will not be elaborated here.

[0110] Optionally, the electronic device can be products such as mobile phones, tablets, laptops, etc.

[0111] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

[0112] Those skilled in the art will easily think of other implementation schemes of the present application after considering the specification and practicing the present application disclosed here. The present application aims to cover any variations, uses or adaptive changes of the present application, and these variations, uses or adaptive changes follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary.

[0113] It should be understood that the present application is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. An aperture adjustment mechanism, It is characterized in that The aperture adjustment mechanism comprises a base (1), a drive unit (2) and an aperture (3), wherein the base (1) has a drive hole (101), the drive hole (101) extends to the edge of the base (1), and the aperture (3) has a light-through hole (301), wherein: The aperture (3) is connected to the base (1), and the aperture (3) is movable relative to the base (1); The driving unit (2) is in transmission connection with the aperture (3) so as to be able to drive the aperture (3) to adjust the size of the light-through hole (301); The drive unit (2) has a contact surface (21), the contact surface (21) is located in the drive hole (101), the contact surface (21) is parallel to and opposite to the wall surface of the drive hole (101), and forms an installation gap (100) between the contact surface (21) and the wall surface of the drive hole (101).

2. The aperture adjustment mechanism according to claim 1, It is characterized in that A first chamfer is formed on a side of the wall surface of the driving hole (101) close to the installation gap (100), and the first chamfer is located at an end of the driving hole (101).

3. The aperture adjustment mechanism according to claim 1, It is characterized in that An end of the driving unit (2) extending from the driving hole (101) forms a second rounded corner.

4. The aperture adjustment mechanism according to claim 1, It is characterized in that The drive unit (2) has a buffer portion (22), the buffer portion (22) is located on a side of the drive unit (2) close to the installation gap (100), and the contact surface (21) is located on the buffer portion (22).

5. The aperture adjustment mechanism according to claim 1, It is characterized in that The number of the driving holes (101) is at least two, the number of the contact surfaces (21) corresponds to the number of the driving holes (101), and each driving hole (101) has one contact surface (21).

6. The aperture adjustment mechanism according to claim 5, It is characterized in that The aperture (3) comprises a first blade (31) and a second blade (32), the first blade (31) and the second blade (32) enclosing the light-through hole (301), the first blade (31) having a first opening and closing groove (3101), the second blade (32) having a second opening and closing groove (3201), the first blade (31) and the second blade (32) both being connected to the base (1) and being capable of rotating relative to the base (1), the driving unit (2) having a driving rod (23), the driving rod (23) extending into the first opening and closing groove (3101) and the second opening and closing groove (3201) so as to be able to drive the first blade (31) and the second blade (32) to move closer to and away from each other.

7. The aperture adjustment mechanism according to claim 1, It is characterized in that The driving unit (2) includes a transmission body (211) and a first driving component (212). The transmission body (211) is in transmission connection with the first driving component (212) and the aperture (3). A part of the transmission body (211) extends into the driving hole (101) and can move along the extension direction of the driving hole (101). The first driving component (212) drives the aperture (3) through the transmission body (211) to adjust the size of the light passing hole (301).

8. The aperture adjusting mechanism according to claim 7, wherein, the first driving component (212) includes a first magnetic part (2121) and a first coil (2122). The first magnetic part (2121) is fixed on the transmission body (211), and the first coil (2122) and the first magnetic part (2121) are arranged opposite to each other along a direction perpendicular to the moving direction of the transmission body (211).

9. The aperture adjusting mechanism according to claim 7, wherein, the aperture adjusting mechanism further includes a first ball (4). The first ball (4) is located between the transmission body (211) and the base (1) and is respectively in contact with the transmission body (211) and the base (1).

10. The aperture adjusting mechanism according to claim 1, wherein, the base (1) includes a base body (11), a first movable seat (12) and a second driving component (13). The aperture (3) and the driving unit (2) are both connected to the base body (11). The base body (11) and the first movable seat (12) are stacked in a first direction. The second driving component (13) is connected to the base body (11) so that the base body (11) can move relative to the first movable seat (12) in a second direction, and the second direction is perpendicular to the first direction.

11. The aperture adjusting mechanism according to claim 10, wherein, the second driving component (13) includes a second magnetic part (131) and a second coil (132). The second magnetic part (131) is fixed on the base body (11), and the second coil (132) and the second magnetic part (131) are arranged opposite to each other along a direction perpendicular to the first direction.

12. The aperture adjusting mechanism according to claim 10, wherein, the base (1) further includes a second ball (102). The second ball (102) is located between the first movable seat (12) and the base body (11) along the first direction and is respectively in contact with the first movable seat (12) and the base body (11).

13. The aperture adjusting mechanism according to claim 10, wherein, The base (1) further includes a second movable seat (14) and a third driving component (15). The second movable seat (14) and the first movable seat (12) are stacked along the first direction. The third driving component (15) is connected to the seat body (11) to drive the seat body (11) to drive the first movable seat (12) to move relative to the second movable seat (14) along a third direction, and the third direction is perpendicular to both the second direction and the first direction.

14. The aperture adjusting mechanism according to claim 13, wherein, the third driving component (15) includes a third magnetic part (151) and a third coil (152). The third magnetic part (151) is fixed to the seat body (11), and the third coil (152) and the third magnetic part (151) are arranged opposite to each other along a direction perpendicular to the first direction.

15. The aperture adjusting mechanism according to claim 13, wherein, the base (1) further includes a third ball (103). The third ball (103) is located between the first movable seat (12) and the second movable seat (14) along the first direction and is in contact with the first movable seat (12) and the second movable seat (14) respectively.

16. The aperture adjusting mechanism according to claim 13, wherein, the base (1) further includes a third movable seat (16) and a fourth driving component (17). The third movable seat (16) and the second movable seat (14) are stacked along the first direction. The fourth driving component (17) is connected to the second movable seat (14) and the third movable seat (16) respectively to drive the second movable seat (14) to drive the seat body (11) to move along the first direction.

17. The aperture adjusting mechanism according to claim 16, wherein, the fourth driving component (17) includes a fourth magnetic part (171) and a fourth coil (172). The fourth magnetic part (171) is fixed to the third movable seat (16), the fourth coil (172) is fixed to the second movable seat (14), and the fourth coil (172) and the fourth magnetic part (171) are arranged opposite to each other along a direction perpendicular to the first direction.

18. The aperture adjusting mechanism according to claim 16, wherein, the base (1) further includes a fourth ball (104). The second movable seat (14) and the third movable seat (16) are stacked along the first direction. The fourth ball (104) is located between the third movable seat (16) and the second movable seat (14) along a direction perpendicular to the first direction and is in contact with the third movable seat (16) and the second movable seat (14) respectively.

19. A camera module, wherein, the camera module includes a lens and the aperture adjusting mechanism according to any one of claims 1 to 18, and the lens is located at one end of the light passing hole (301).

20. An electronic device, wherein, the electronic device includes the camera module according to claim 19.

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