Aperture assembly and camera module

Abstract

The utility model discloses an aperture assembly and a camera module, and belongs to the technical field of display. The aperture assembly comprises a bearing seat, a piezoelectric vibration part, a rotating part and a plurality of blades. Due to the fact that the rotating component can rotate under the vibration effect of the piezoelectric vibration component to drive the multiple blades to be opened and closed, the size of the aperture hole defined by the multiple blades can be adjusted through the matching effect of the piezoelectric vibration component and the rotating component. Therefore, a driving magnet and a driving coil which are used for driving the rotating part to rotate do not need to be arranged in the aperture assembly, so that the phenomenon of electromagnetic interference which is not easily generated in the camera module can be ensured, and a relatively good imaging effect of the camera module can be ensured.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an aperture assembly and a camera module. Background Art

[0002] With the continuous development of the electronic equipment industry, the functions of electronic equipment have gradually become more diversified and intelligent, among which camera aperture has gradually become one of the essential functions of electronic equipment.

[0003] At present, a variable aperture can be usually set in a mobile phone camera module, and the light intensity of the incident light can be adjusted by changing the size of the aperture hole of the variable aperture. Among them, for a camera module using a variable aperture, a magnet plus a coil is usually used to drive the blades in the variable aperture to rotate.

[0004] However, the method of driving the blades in the variable aperture to rotate by means of magnets and coils can easily cause electromagnetic interference inside the camera module, thereby resulting in poor imaging effects of the camera module. Utility Model Content

[0005] The embodiment of the present application provides an aperture assembly and a camera module. The problem of poor imaging effect of the camera module can be solved. The technical solution is as follows:

[0006] In one aspect, an aperture assembly is provided, comprising: a bearing seat, a piezoelectric vibration component, a rotating component and a plurality of blades;

[0007] The bearing seat has a bearing cavity;

[0008] The piezoelectric vibration component is located in the bearing cavity and connected to the bearing seat;

[0009] The rotating component is located in the bearing cavity and is connected to the rotation of the piezoelectric vibration component;

[0010] The plurality of blades are rotatably connected to a side of the rotating component away from the piezoelectric vibration component, and the plurality of blades are used to enclose an aperture;

[0011] Wherein, the rotating component is configured to rotate under the vibration of the piezoelectric vibration component to drive the plurality of blades to open and close, so that the size of the aperture hole can be adjusted.

[0012] Optionally, the piezoelectric vibration component includes: a piezoelectric component, and a transmission member fixedly connected to the piezoelectric component;

[0013] On one side of the transmission member facing away from the piezoelectric assembly, there are a plurality of driving teeth, and the plurality of driving teeth are distributed around the axis of the aperture assembly, and at least some of the driving teeth are in contact with the side of the rotating member facing the transmission member;

[0014] Wherein, the piezoelectric assembly is configured to: generate deformation under the action of an electric field to drive at least some of the driving teeth to generate bending vibration.

[0015] Optionally, the piezoelectric assembly includes: a piezoelectric sheet, a plurality of first electrodes, and a plurality of second electrodes;

[0016] The piezoelectric sheet is annular, the piezoelectric sheet has a plurality of partitions, the plurality of partitions are arranged in sequence in the circumferential direction of the piezoelectric sheet, the plurality of partitions correspond to the plurality of first electrodes one by one, and correspond to the plurality of second electrodes one by one;

[0017] The plurality of first electrodes are all distributed on the side of the piezoelectric sheet facing the transmission member, and each first electrode is located in the corresponding partition, and two adjacent first electrodes arranged arbitrarily in the circumferential direction of the piezoelectric sheet are insulated;

[0018] The plurality of second electrodes are all distributed on the side of the piezoelectric sheet facing away from the transmission member, and each second electrode is located in the corresponding partition, and two adjacent second electrodes arranged arbitrarily in the circumferential direction of the piezoelectric sheet are insulated.

[0019] Optionally, the polarization directions of two adjacent partitions arranged arbitrarily in the circumferential direction of the piezoelectric sheet are opposite.

[0020] Optionally, the plurality of partitions can be divided into a first partition group and a second partition group; the two outermost partitions in the first partition group are the first partition and the second partition respectively, and the two outermost partitions in the second partition group are the third partition and the fourth partition respectively; the first partition and the third partition are arranged adjacent to each other in the circumferential direction of the piezoelectric sheet, and the second partition and the fourth partition are arranged adjacent to each other in the circumferential direction of the piezoelectric sheet;

[0021] The piezoelectric sheet also has a first auxiliary area and a second auxiliary area arranged oppositely; the first auxiliary area is distributed between the first partition and the third partition, and the second auxiliary area is distributed between the second partition and the fourth partition.

[0022] Optionally, the piezoelectric assembly further includes: a third electrode and a fourth electrode;

[0023] The third electrode is distributed on the side of the piezoelectric sheet facing the transmission member and is located in the first auxiliary area;

[0024] The fourth electrode is distributed on the side of the piezoelectric sheet facing away from the transmission member and is located in the first auxiliary area.

[0025] Optionally, the extension length of the first auxiliary area in the circumferential direction of the piezoelectric sheet is equal to half of the extension length of a single partition in the circumferential direction of the piezoelectric sheet;

[0026] The extension length of the second auxiliary area in the circumferential direction of the piezoelectric sheet is three times the extension length of the first auxiliary area in the circumferential direction of the piezoelectric sheet.

[0027] Optionally, the orthographic projections of at least two adjacent drive teeth on the piezoelectric sheet are located within a single partition.

[0028] Optionally, the side of the rotating member facing the plurality of drive teeth has a friction surface, and at least part of the drive teeth abuts against the friction surface.

[0029] On the other hand, a camera module is provided. The camera module includes: a camera body, and a diaphragm assembly connected to the camera body. The diaphragm assembly is any one of the above diaphragm assemblies.

[0030] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:

[0031] Since the rotating member can rotate under the vibration action of the piezoelectric vibration member to drive a plurality of blades to open and close, therefore, through the cooperative action of the piezoelectric vibration member and the rotating member, the size of the aperture formed by the plurality of blades can be adjusted. In this way, there is no need to provide a drive magnet and a drive coil for driving the rotating member to rotate in the diaphragm assembly, so that electromagnetic interference phenomena are not likely to occur in the camera module, and thus the imaging effect of the camera module can be ensured to be good. Description of the Drawings

[0032] 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 following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 is a schematic structural diagram of a diaphragm assembly provided by an embodiment of the present application;

[0034] Figure 2 is an exploded structural diagram of a diaphragm assembly provided by an embodiment of the present application;

[0035] Figure 3It is a schematic structural diagram of a piezoelectric vibration component provided by an embodiment of the present application;

[0036] Figure 4 It is a schematic front structural diagram of a piezoelectric component provided by an embodiment of the present application;

[0037] Figure 5 It is a schematic back structural diagram of a piezoelectric component provided by an embodiment of the present application;

[0038] Figure 6 It is a schematic structural diagram of a rotating component provided by an embodiment of the present application;

[0039] Figure 7 It is a schematic structural diagram of a carrier provided by an embodiment of the present application;

[0040] Figure 8 It is an exploded structural diagram of another aperture component provided by an embodiment of the present application;

[0041] Figure 9 It is a partial structural diagram of an aperture component provided by an embodiment of the present application;

[0042] Figure 10 It is a partial structural diagram of another aperture component provided by an embodiment of the present application;

[0043] Figure 11 It is a schematic structural diagram of a sealing cover provided by an embodiment of the present application;

[0044] Figure 12 It is a schematic structural diagram of another rotating component provided by an embodiment of the present application. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0046] An embodiment of the present application provides an aperture component. Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of an aperture component provided by an embodiment of the present application, Figure 2 and

[0047] which is an exploded structural diagram of an aperture component provided by an embodiment of the present application. The aperture component 000 may include: a carrier 100, a piezoelectric vibration component 200, a rotating component 300, and a plurality of blades 400.

[0048] The piezoelectric vibration component 200 in the aperture assembly 000 can be located within the bearing cavity A, and the piezoelectric vibration component 200 can be connected to the bearing seat 100. Among them, the piezoelectric vibration component 200 can perform bending vibration. For example, under the action of an electric field, the piezoelectric vibration component 200 can perform bending vibration.

[0049] The rotating component 300 in the aperture assembly 000 can be located within the bearing cavity A, and the rotating component 300 can be rotatably connected to one side of the piezoelectric vibration component 200. In this case, under the action of an electric field, the piezoelectric vibration component 200 can perform bending vibration, thereby driving the rotating component 300 to rotate relative to the piezoelectric vibration component 200.

[0050] For example, under the action of an electric field, the piezoelectric vibration component 200 can perform bending vibration so that the rotating component 300 can rotate clockwise relative to the piezoelectric vibration component 200, or the rotating component 300 can rotate counterclockwise relative to the piezoelectric vibration component 200.

[0051] The plurality of blades 400 in the aperture assembly 000 can be rotatably connected to the side of the rotating component 300 facing away from the piezoelectric vibration component 200, and the plurality of blades 400 can be used to enclose the aperture K.

[0052] Among them, under the vibration action of the piezoelectric vibration component 200, the rotating component 300 can rotate to drive the plurality of blades 400 to open and close, so that the size of the aperture K can be adjusted. For example, under the vibration action of the piezoelectric vibration component 200, the rotating component 300 can rotate clockwise, and the rotating component 300 rotating clockwise can drive the plurality of blades 400 to open, so that the aperture diameter of the aperture K enclosed by the plurality of blades 400 can become larger. Again, for example, under the vibration action of the piezoelectric vibration component 200, the rotating component 300 can rotate counterclockwise, and the rotating component 300 rotating counterclockwise can drive the plurality of blades 400 to close, so that the aperture diameter of the aperture K enclosed by the plurality of blades 400 can become smaller.

[0053] It should be noted that in the related art, for a camera module with a variable aperture function, a voice coil motor is usually used to drive the blades to adjust the aperture size. Among them, a driving magnet and a driving coil are usually arranged inside the voice coil motor. Through the mutual induction between the driving magnet and the driving coil, the rotating member can rotate relative to the base, so as to drive the blades to open and close. However, since the camera module usually also needs to have an anti-shake function and an autofocus function, the anti-shake motor and the autofocus motor usually also use the principle of mutual induction between a magnet and a coil to achieve the corresponding functions. Therefore, electromagnetic interference phenomena are likely to occur in these driving magnets and driving coils in the camera module, resulting in inaccurate adjustment of the aperture size, and further resulting in poor imaging effects of this camera module.

[0054] In the embodiment of the present application, since the rotating member 300 can rotate under the vibration action of the piezoelectric vibration member 200 to drive the plurality of blades 400 to open and close, therefore, through the cooperative action of the piezoelectric vibration member 200 and the rotating member 300, the size of the aperture hole K surrounded by the plurality of blades can be adjusted. In this way, there is no need to arrange a driving magnet and a driving coil for driving the rotating member 300 to rotate inside the aperture assembly, so that electromagnetic interference phenomena are not likely to occur in the camera module, and further, the imaging effect of the camera module can be ensured to be good.

[0055] In summary, an aperture assembly provided in the embodiment of the present application includes: a carrier, a piezoelectric vibration member, a rotating member, and a plurality of blades. Since the rotating member can rotate under the vibration action of the piezoelectric vibration member to drive the plurality of blades to open and close, therefore, through the cooperative action of the piezoelectric vibration member and the rotating member, the size of the aperture surrounded by the plurality of blades can be adjusted. In this way, there is no need to arrange a driving magnet and a driving coil for driving the rotating member to rotate inside the aperture assembly, so that electromagnetic interference phenomena are not likely to occur in the camera module, and further, the imaging effect of the camera module can be ensured to be good.

[0056] In the embodiment of the present application, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of a piezoelectric vibration member provided in the embodiment of the present application. The piezoelectric vibration member 200 in the aperture assembly 000 may include: a piezoelectric assembly 201, and a transmission member 202 fixedly connected to the piezoelectric assembly 201.

[0057] On the side of the transmission member 202 in the piezoelectric vibration component 200 away from the piezoelectric assembly 201, there may be a plurality of drive teeth 202a, and the plurality of drive teeth 202a may be distributed around the axis of the aperture assembly 000. Among them, at least some of the drive teeth 202a may be in contact with the side of the rotating member 300 facing the transmission member 202. By way of example, each of the drive teeth 202a in the transmission member 202 may be in contact with the side of the rotating member 300 facing the transmission member 202.

[0058] Among them, under the action of an electric field, the piezoelectric assembly 201 can generate deformation to drive at least some of the drive teeth 202a to generate bending vibration. Since the piezoelectric assembly 201 has the inverse piezoelectric effect, under the action of an electric field, the piezoelectric assembly 201 can generate deformation, so that the piezoelectric assembly 201 can undergo bending vibration. In this case, since the piezoelectric assembly 201 is fixedly connected to the transmission member 202, the piezoelectric assembly 201 can drive the transmission member 202 to undergo bending vibration, so that at least some of the drive teeth 202a can generate bending vibration. Also, since each of the drive teeth 202a in the transmission member 202 is in contact with the side of the rotating member 300 facing the transmission member 202, when at least some of the drive teeth 202a generate bending vibration, through the frictional action between the rotating member 300 and the drive teeth 202a generating bending vibration, the rotating member 300 can rotate smoothly.

[0059] Here, the inverse piezoelectric effect means that when an electric field is applied to the piezoelectric assembly 201, the piezoelectric assembly 201 will deform. This deformation is related to the magnitude and direction of the applied electric field. The greater the applied electric field, the more obvious the deformation generated by the piezoelectric assembly 201; when the direction of the applied electric field is different, the direction of the deformation generated by the piezoelectric assembly 201 is also different.

[0060] In this application, please refer to Figure 4 and Figure 5 , Figure 4 is a schematic front view of a piezoelectric assembly provided by an embodiment of this application, Figure 5 is a schematic back view of a piezoelectric assembly provided by an embodiment of this application. The piezoelectric assembly 201 may include: a piezoelectric sheet 2011, a plurality of first electrodes 2012, and a plurality of second electrodes 2013. The material of the piezoelectric sheet 2011 may include piezoelectric ceramics.

[0061] Here, the piezoelectric sheet 2011 in the piezoelectric assembly 201 may be annular, and the piezoelectric sheet 2011 may have a plurality of partitions B, and the plurality of partitions B may be arranged in sequence in the circumferential direction of the piezoelectric sheet 2011. Among them, the plurality of partitions B may correspond one-to-one with the plurality of first electrodes 2012, and may correspond one-to-one with the plurality of second electrodes 2013.

[0062] Among the multiple first electrodes 2012 in the piezoelectric component 201, they can all be distributed on the side of the piezoelectric sheet 2011 facing the transmission member 202, and each first electrode 2012 can be located in the corresponding partition B. Among them, two adjacent first electrodes 2012 arranged arbitrarily in the circumferential direction of the piezoelectric sheet 2011 can be insulated from each other.

[0063] Among the multiple second electrodes 2013 in the piezoelectric component 201, they can all be distributed on the side of the piezoelectric sheet 2011 facing away from the transmission member 202, and each second electrode 2013 can be located in the corresponding partition B. Among them, two adjacent second electrodes 2013 arranged arbitrarily in the circumferential direction of the piezoelectric sheet 2011 can be insulated from each other.

[0064] In this application, as Figure 4 and Figure 5 shown, the polarization directions of two adjacent partitions B arranged arbitrarily in the circumferential direction of the piezoelectric sheet 2011 in the piezoelectric component 201 can be opposite. Here, (+) or (-) represents the polarization state of the partition B in the direction perpendicular to the piezoelectric sheet 2011. For example, (+) can represent that the partition B is polarized in the positive direction perpendicular to the piezoelectric sheet 2011, and (-) can represent that the partition B is polarized in the negative direction perpendicular to the piezoelectric sheet 2011.

[0065] In an embodiment of this application, please refer to Figure 4 and Figure 5 , multiple partitions B in the piezoelectric sheet 2011 can be divided into a first partition group B1 and a second partition group B2. Here, the number of partitions included in the first partition group B1 can be the same as the number of partitions included in the second partition group B2.

[0066] Among them, the two outermost partitions in the first partition group B1 are the first partition B11 and the second partition B12 respectively, and the two outermost partitions in the second partition group B2 are the third partition B21 and the fourth partition B22 respectively. Here, the first partition B11 and the third partition B21 can be arranged adjacent to each other in the circumferential direction of the piezoelectric sheet 2011, and the second partition B12 and the fourth partition B22 can be arranged adjacent to each other in the circumferential direction of the piezoelectric sheet 2011.

[0067] In this case, since the polarization directions of any two adjacent partitions B arranged in the circumferential direction of the piezoelectric sheet 2011 in the piezoelectric assembly 201 can be opposite, under the action of the electric field, the first partition group B1 and the second partition group B2 in the piezoelectric sheet 2011 can generate an AC signal in the ultrasonic frequency domain with a phase difference of 90 degrees. For example, under the action of the electric field, the first partition group B1 in the piezoelectric sheet 2011 can generate an AC sine waveform, and the second partition group B2 in the piezoelectric sheet 2011 can generate an AC cosine waveform. In this case, the piezoelectric sheet 2011 can be deformed, so that the piezoelectric sheet 2011 can drive at least part of the driving teeth 202a to undergo bending vibration.

[0068] In the present application, the piezoelectric sheet 2011 in the piezoelectric component 201 may also have a first auxiliary area B3 and a second auxiliary area B4 arranged relatively to each other, wherein the first auxiliary area B3 may be distributed between the first partition B11 and the third partition B21, and the second auxiliary area B4 may be distributed between the second partition B12 and the fourth partition B22.

[0069] In the examples of this application, please refer to Figure 4 and Figure 5 The piezoelectric component 201 may further include: a third electrode 2014 and a fourth electrode 2015. The third electrode 2014 in the piezoelectric component 201 may be distributed on the side of the piezoelectric sheet 2011 facing the transmission member 202, and the third electrode 2014 may be located in the first auxiliary area B3. The fourth electrode 2015 in the piezoelectric component 201 may be distributed on the side of the piezoelectric sheet 2011 facing away from the transmission member 202, and the fourth electrode 2015 may be located in the first auxiliary area B3.

[0070] Here, the first auxiliary area B3 in the piezoelectric sheet 2011 can be connected to an external detection device, and the superimposed ultrasonic frequency domain AC signals generated by the first subarea group B1 and the second subarea group B2 in the piezoelectric sheet 2011 can be detected through the first auxiliary area B3 in the piezoelectric sheet 2011.

[0071] In this application, if Figure 4 and Figure 5 As shown, the extension length of the first auxiliary area B3 in the piezoelectric sheet 2011 in the circumferential direction of the piezoelectric sheet 2011 may be equal to half the extension length of a single partition B in the circumferential direction of the piezoelectric sheet 2011 .

[0072] The circumferential extension length of the second auxiliary area B4 in the piezoelectric sheet 2011 may be equal to three times the circumferential extension length of the first auxiliary area B3 in the piezoelectric sheet 2011. In this way, it can be ensured that the first partition group B1 and the second partition group B2 in the piezoelectric sheet 2011 can be separated by the second auxiliary area B4 in the piezoelectric sheet 2011, so as to ensure that there is no mutual interference between the first partition group B1 and the second partition group B2.

[0073] In this application, as Figure 3 , Figure 4 and Figure 5 shown, the orthographic projections of at least two adjacent drive teeth 202a in the transmission member 202 on the piezoelectric sheet 2011 may be located within a single partition B.

[0074] In the embodiment of this application, please refer to Figure 6 , Figure 6 which is a schematic structural diagram of a rotating assembly provided by an embodiment of this application. The side of the rotating member 300 in the aperture assembly 000 facing the plurality of drive teeth 202a in the transmission member 200 may have a friction surface S. Among them, at least some of the drive teeth 202a may be in contact with the friction surface S in the rotating member 300. By way of example, each drive tooth 202a in the transmission member 200 may be in contact with the friction surface S in the rotating member 300. In this case, since at least some of the drive teeth 202a in the transmission member 200 can be in contact with the friction surface S in the rotating member 300, it can be ensured that the frictional force generated between the drive teeth 202a and the rotating member 300 is relatively large. In this way, under the action of the bending vibration generated by at least some of the drive teeth 202a, the rotating member 300 can rotate smoothly.

[0075] In this application, please refer to Figure 3 and Figure 7 , Figure 7 which is a schematic structural diagram of a carrier provided by an embodiment of this application. The carrier 100 in the aperture assembly 000 may have a plurality of first connectors 101, and the piezoelectric vibration member 200 in the aperture assembly 000 may have a plurality of second connectors 201a corresponding to the plurality of first connectors 101 one by one.

[0076] Among them, the first connector 101 in the carrier 100 may be cooperatively connected with the corresponding second connector 201a in the piezoelectric vibration member 200. In this way, through the cooperation of the plurality of first connectors 101 and the plurality of second connectors 201a, the carrier 100 and the piezoelectric vibration member 200 can be stably connected together. By way of example, the first connector 101 may be a connecting post, and the second connector 201a may be a connecting hole. After the carrier 100 and the piezoelectric vibration member 200 are connected, at least part of the connecting post may be located within the connecting hole.

[0077] In the embodiments of the present application, please refer to Figure 8 and Figure 9 , Figure 8 which is an exploded structural schematic diagram of another aperture assembly provided by the embodiments of the present application, Figure 9 and Figure 9 which is a partial structural schematic diagram of an aperture assembly provided by the embodiments of the present application. The aperture assembly 000 may further include: a plurality of elastic bodies 500. Here, the plurality of elastic bodies 500 may be located between the carrier base 100 and the piezoelectric vibration component 200, and the plurality of elastic bodies 500 may correspond to the plurality of first connecting members 101 one by one, and each elastic body 500 may be sleeved on the corresponding first connecting member 101. In this way, after the second connecting member 201a in the piezoelectric vibration component 200 is connected to the first connecting member 101 in the carrier base 100, the plurality of elastic bodies 500 located between the carrier base 100 and the piezoelectric vibration component 200 can provide a certain elastic pre-pressure for the piezoelectric vibration component 200. In this way, under the action of the elastic pre-pressure, the contact between the piezoelectric vibration component 200 and the rotating component 300 can be made more stable, and thus the stability of the piezoelectric vibration component 200 driving the rotating component 300 to rotate can be improved.

[0078] In the present application, as Figure 7 shown, the inner wall of the carrier base 100 may have a roller groove U and rollers 104 located in the roller groove U. Here, the rollers 104 may be in rolling connection with the outer wall of the rotating component 300. In this way, during the rotation of the rotating component 300, it is more convenient for the rotating component 300 to rotate relative to the carrier base 100 through the rollers 104.

[0079] Optionally, please refer to Figure 10 , Figure 10 which is a partial structural schematic diagram of another aperture assembly provided by the embodiments of the present application. The rotating component 300 in the aperture assembly 000 may have a plurality of first fixing posts 301, and the carrier base 100 in the aperture assembly 000 may have a plurality of second fixing posts 102.

[0080] Among them, the plurality of first fixing posts 301 may correspond to the plurality of blades 400 one by one. Each blade 400 has a sliding hole 401, and the sliding hole 401 on each blade 400 may be sleeved on the corresponding first fixing post 301 and is in sliding connection with the corresponding first fixing post 301.

[0081] The plurality of second fixing posts 102 may correspond to the plurality of blades 400 one by one. Each blade 400 has a rotating hole 402, and the rotating hole 402 on each blade 400 may be sleeved on the corresponding second fixing post 102 and is in rotating connection with the corresponding second fixing post 102.

[0082] For example, during the rotation of the rotating member 300 under the vibration of the piezoelectric vibration member 200, the first fixing column 301 in the rotating member 300 can slide relative to the sliding hole 401 on the blade 400, so that the second fixing column 102 in the bearing seat 100 can rotate relative to the rotating hole 402 on the blade 400, thereby driving multiple blades 400 to open and close.

[0083] In the embodiments of the present application, please refer to Figure 8 , the aperture assembly 000 may further include: a gasket 600, a sealing cover 700, a light-shielding sheet 800, and a first circuit board 900.

[0084] The gasket 600 in the aperture assembly 000 may be located on the side of the multiple blades 400 facing the rotating member 300. Here, since the thickness of the material of the blade 400 is usually relatively thin, the gasket 600 can ensure that during the opening and closing of the multiple blades 400, the phenomenon of wear between the blades 400 and the rotating member 300 is not likely to occur.

[0085] In the present application, please refer to Figure 7 and Figure 11 , Figure 11 FIG. is a schematic structural diagram of a sealing cover provided in the embodiments of the present application. The sealing cover 700 in the aperture assembly 000 may be located on the side of the multiple blades 400 facing away from the rotating member 300. Here, the sealing cover 700 in the aperture assembly 000 may have a plurality of third connecting members 701, and the bearing seat 100 may have a plurality of fourth connecting members 103 corresponding to the plurality of third connecting members 701 one by one.

[0086] Among them, the third connecting member 701 in the sealing cover 700 can be connected to the fourth connecting member 103 in the bearing seat 100 in a matching manner, so that the sealing cover 700 and the bearing seat 100 can be connected together. For example, the third connecting member 701 may be a connecting hole, and the fourth connecting member 103 may be a connecting column. After the sealing cover 700 and the bearing seat 100 are connected, at least a part of the connecting column may be located in the connecting hole.

[0087] It should be noted that subsequently, the bearing seat 100 and the sealing cover 700 can be fixedly connected by means of thermal riveting or gluing, etc., to ensure that the sealing cover 700 and the bearing seat 100 can be connected together more stably.

[0088] In the embodiments of the present application, please refer to Figure 11 and Figure 12 , Figure 12It is a schematic structural diagram of another rotating component provided by an embodiment of the present application. On the side of the sealing cover 700 in the aperture assembly 000 facing the rotating component 300, there may be a plurality of protrusions 702. On the side of the rotating component 300 facing the sealing cover 700, there may be a limiting surface S1. Among them, at least some of the protrusions 702 in the sealing cover 700 may be in contact with the limiting surface S1 in the rotating component 300.

[0089] In the present application, as Figure 8 shown, the light shielding sheet 800 in the aperture assembly 000 may be located on the side of the sealing cover 700 away from the plurality of blades 400. Here, at least some of the structures in the aperture assembly 000 can be shielded by the light shielding sheet 800, thereby improving the aesthetics of the aperture assembly 000.

[0090] The first circuit board 900 in the aperture assembly 000 may be arranged to surround the carrier 100. Among them, the first circuit board 900 can be used to supply power to the aperture assembly 000.

[0091] In summary, an aperture assembly provided by an embodiment of the present application includes: a carrier, a piezoelectric vibration component, a rotating component, and a plurality of blades. Since the rotating component can rotate under the vibration of the piezoelectric vibration component to drive the plurality of blades to open and close, therefore, through the cooperative action of the piezoelectric vibration component and the rotating component, the size of the aperture formed by the plurality of blades can be adjusted. In this way, there is no need to provide a driving magnet and a driving coil for driving the rotating component to rotate in the aperture assembly, thereby ensuring that electromagnetic interference is not easily generated in the camera module, and further ensuring that the imaging effect of the camera module is good.

[0092] An embodiment of the present application further provides a camera module, which includes: a camera body, and an aperture assembly connected to the camera body, and the aperture assembly is any of the above-mentioned aperture assemblies.

[0093] Here, the camera body can be distributed on the side of the carrier in the aperture assembly away from the plurality of blades, and the carrier can be annular, and at least a part of the lens component of the camera body extends into the area surrounded by the carrier.

[0094] An embodiment of the present application further provides an electronic device, which can be: any product or component with a display function such as a mobile phone, a tablet computer, a television, an advertising machine, a display screen, a digital photo frame, a vehicle-mounted terminal, etc. The electronic device may include: a housing and a camera module located inside the housing, and the camera module is any of the above-mentioned camera modules.

[0095] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plural" means two or more unless otherwise clearly defined.

[0096] The foregoing are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. An aperture assembly, characterized in that, include: A bearing seat (100), a piezoelectric vibration component (200), a rotating component (300), and a plurality of blades (400); The bearing seat (100) has a bearing cavity (A); The piezoelectric vibration component (200) is located in the bearing cavity (A) and is connected to the bearing seat (100); The rotating component (300) is located in the bearing cavity (A) and is rotationally connected to the piezoelectric vibration component (200); The plurality of blades (400) are rotatably connected to a side of the rotating component (300) away from the piezoelectric vibration component (200), and the plurality of blades (400) are used to enclose an aperture hole (K); The rotating component (300) is configured to rotate under the vibration of the piezoelectric vibration component (200) to drive the plurality of blades (400) to open and close, so that the size of the aperture hole (K) can be adjusted.

2. The aperture assembly according to claim 1, wherein The piezoelectric vibration component (200) comprises: a piezoelectric component (201), and a transmission component (202) fixedly connected to the piezoelectric component (201); The transmission member (202) has a plurality of driving teeth (202a) on a side facing away from the piezoelectric component (201), the plurality of driving teeth (202a) are distributed around the axis of the aperture component, and at least part of the driving teeth (202a) abuts against a side of the rotating component (300) facing the transmission member (202); Wherein, the piezoelectric component (201) is configured to: generate deformation under the action of an electric field, so as to drive at least part of the driving teeth (202a) to generate bending vibration.

3. The aperture assembly according to claim 2, wherein, The piezoelectric component (201) comprises: a piezoelectric sheet (2011), a plurality of first electrodes (2012) and a plurality of second electrodes (2013); The piezoelectric sheet (2011) is annular, and has a plurality of partitions (B), the plurality of partitions (B) are arranged in sequence in the circumferential direction of the piezoelectric sheet (2011), and the plurality of partitions (B) correspond one-to-one to the plurality of first electrodes (2012), and correspond one-to-one to the plurality of second electrodes (2013); The plurality of first electrodes (2012) are distributed on a side of the piezoelectric sheet (2011) facing the transmission member (202), and each of the first electrodes (2012) is located in a corresponding partition (B), and any two adjacent first electrodes (2012) arranged in a circumferential direction of the piezoelectric sheet (2011) are insulated; The multiple second electrodes (2013) are distributed on a side of the piezoelectric sheet (2011) facing away from the transmission member (202), and each second electrode (2013) is located in a corresponding partition (B), and any two second electrodes (2013) arranged adjacent to each other in the circumferential direction of the piezoelectric sheet (2011) are insulated.

4. The aperture assembly according to claim 3, wherein The polarization directions of any two partitions (B) arranged adjacent to each other in the circumferential direction of the piezoelectric sheet (2011) are opposite.

5. The aperture assembly according to claim 4, wherein The plurality of partitions (B) can be divided into a first partition group (B1) and a second partition group (B2); the two outermost partitions in the first partition group (B1) are respectively the first partition (B11) and the second partition (B12), and the two outermost partitions in the second partition group (B2) are respectively the third partition (B21) and the fourth partition (B22); the first partition (B11) and the third partition (B21) are arranged adjacent to each other in the circumferential direction of the piezoelectric sheet (2011), and the second partition (B12) and the fourth partition (B22) are arranged adjacent to each other in the circumferential direction of the piezoelectric sheet (2011); The piezoelectric sheet (2011) also has a first auxiliary area (B3) and a second auxiliary area (B4) which are arranged relatively to each other, wherein the first auxiliary area (B3) is distributed between the first partition (B11) and the third partition (B21), and the second auxiliary area (B4) is distributed between the second partition (B12) and the fourth partition (B22).

6. The aperture assembly according to claim 5, wherein, The piezoelectric component (201) further comprises: a third electrode (2014) and a fourth electrode (2015); The third electrode (2014) is distributed on a side of the piezoelectric sheet (2011) facing the transmission member (202), and is located in the first auxiliary area (B3); The fourth electrode (2015) is distributed on a side of the piezoelectric sheet (2011) away from the transmission member (202), and is located in the first auxiliary area (B3).

7. The aperture assembly according to claim 6, wherein The extension length of the first auxiliary area (B3) in the circumferential direction of the piezoelectric sheet (2011) is equal to half the extension length of a single partition (B) in the circumferential direction of the piezoelectric sheet (2011); An extension length of the second auxiliary region (B4) in the circumferential direction of the piezoelectric sheet (2011) is equal to three times an extension length of the first auxiliary region (B3) in the circumferential direction of the piezoelectric sheet (2011).

8. The aperture assembly according to any one of claims 3 to 7, characterized in that The orthographic projections of at least two adjacent driving teeth (202a) on the piezoelectric sheet (2011) are located within a single partition (B).

9. The aperture assembly according to any one of claims 2 to 7, characterized in that The rotating component (300) has a friction surface (S) on one side facing the plurality of driving teeth (202a), and at least a portion of the driving teeth (202a) abut against the friction surface (S).

10. An imaging module, characterized in that, The camera module comprises: a camera body, and an aperture assembly connected to the camera body, and the aperture assembly is the aperture assembly described in any one of claims 1 to 9.

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