CN212944436U - Cleaning device and camera module - Google Patents

Abstract

The application discloses cleaning device and camera module, this cleaning device include support arm, piezoelectric element and shake the piece. The supporting arm is provided with a driving part, the piezoelectric element is arranged on the supporting arm and used for being deformed after being electrified and driving the supporting arm to deform, and the deformation generated by the supporting arm enables the driving part to drive the vibration part to do stretching motion or contraction motion so as to drive the part to be cleaned to vibrate. The shaking piece cleans up the dirt on the part to be cleaned connected with the shaking piece through shaking, thereby effectively avoiding the shielding of the dirt on the part to be cleaned on the lens of the camera module, and ensuring the definition of images shot by the camera module.

Description

Cleaning device and camera module

Technical Field

The application relates to the technical field of cameras, in particular to a cleaning device and a camera module.

Background

With the continuous development of the automobile industry, the camera is more and more important as the eyes of the vehicle in the field of safe auxiliary driving. The vehicle-mounted camera outside the existing cabin is easily polluted by rainwater and dust due to long-term exposure, so that the imaging quality of the camera is poor, and the user experience and driving safety are influenced. Therefore, an outermost lens of the vehicle-mounted camera outside the cabin can be required to be coated, the drainage angle needs to reach 110 degrees or even more than 120 degrees, but the time is long, the quality of a coated layer is poorer and poorer, and the coated layer is very inconvenient to replace. Therefore, how to remove the dirt blocking the lens of the vehicle-mounted camera to ensure the good imaging quality of the camera becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a cleaning device and camera module, and the good advantage of camera image quality is guaranteed to its dirty of the camera lens that can clean on-vehicle camera.

In a first aspect, an embodiment of the present application provides a cleaning apparatus, including: the support arm has drive division, vibrations piece, with the drive division contact of support arm, and the other end of vibrations piece with treat the contact of clearance part, piezoelectric element sets up on the support arm, piezoelectric element is used for being produced deformation after the circular telegram, and drives the support arm and produce deformation, the deformation that the support arm produced makes drive division drive vibrations piece do and stretch out the motion or shrink the motion and treat the clearance part vibrations in order to drive.

Cleaning device based on this application embodiment, piezoelectric element produces deformation after the circular telegram, thereby piezoelectric element sets up and makes this deformation act on the support arm and make the drive division drive shake the piece and do and stretch out the motion or the motion of contraction produces vibrations on the support arm, thereby owing to shake the piece and wait to clear up the part and be connected, make the vibrations of shaking the piece can transmit and wait to clear up the part on, the dirt (for example dust or water droplet) of waiting to clear up on the part is shaken off by the vibrations, thereby the sheltering from of dirt on having avoided waiting to clear up the part to other parts (for example camera module's camera lens) effectively, the event has guaranteed the definition that camera module shot the image.

In some embodiments, the piezoelectric element is configured to drive the supporting arm to bend toward the first direction to deform so as to enable the driving portion to drive the vibrating member to extend along the second direction in the first power-on mode, and the piezoelectric element is configured to drive the supporting arm to bend toward the third direction to deform so as to enable the driving portion to drive the vibrating member to contract along the fourth direction in the second power-on mode, where the first direction is opposite to the third direction, and the second direction is opposite to the fourth direction.

Based on the above embodiment, in the first power-on mode, the piezoelectric element is bent toward the first direction (for example, the first direction may be a direction close to the supporting arm) to generate deformation and act on the supporting arm, so that the driving portion drives the vibrating member to perform an extending motion along the second direction (for example, the second direction may be a direction perpendicular to the deformation of the piezoelectric element). Similarly, in the second power-on mode, the piezoelectric element moves in the third direction (for example, the third direction may be a direction away from the support arm) to bend and deform, and acts on the support arm, so that the driving portion drives the vibrating member to perform a contraction motion in the fourth direction (for example, the fourth direction may be a direction perpendicular to the deformation of the piezoelectric element). And the first direction is opposite to the third direction and the second direction is opposite to the fourth direction. Because the vibrations are formed by the stretching motion and the contraction motion of the vibration piece along the second direction and the fourth direction, the vibration piece is connected with the part to be cleaned of the camera module, so that the vibrations of the vibration piece can be transmitted to the part to be cleaned, dirt (such as dust or water drops) on the part to be cleaned is shaken off by the vibrations, the shielding of the dirt on the part to be cleaned on the lens of the camera module is effectively avoided, and the definition of images shot by the camera module is ensured.

In some of these embodiments, the first direction is perpendicular to the second direction.

Based on above-mentioned embodiment, piezoelectric element produces deformation behind through first circular telegram mode or second circular telegram mode, and act on the support arm, thereby the support arm produces deformation along first direction or third direction and makes the drive division drive shake the piece and do to stretch out or shrink motion along third direction or fourth direction, because the vibrations portion and the contact of shaking the piece of support arm, set up through first direction and second direction are perpendicular, the messenger that can be better shakes the piece and does concertina movement along third direction or fourth direction under the effect of drive division and form vibrations and bump the surface of treating the clearance part, make the water droplet or the dust of treating on the clearance part of camera module can be effectually clear away, the definition of the shooting image of camera module has been guaranteed.

In some embodiments, the driving part of the supporting arm is fixedly connected with the vibrating piece.

Based on above-mentioned embodiment, because the motion of stretching out or the motion of contracting of vibrations piece mainly realize with the help of the drive division of support arm, the drive division of support arm and vibrations piece fixed connection back, the support arm forms a whole with vibrations piece, produces deformation and acts on the support arm after the piezoelectric element circular telegram, thereby the support arm produces corresponding deformation and is more convenient for the drive division to drive vibrations piece and do the motion of stretching out or the motion of contracting.

In some embodiments, the number of the supporting arms is two, the two supporting arms are respectively located at two opposite sides of the vibration piece, the driving portion of each supporting arm is abutted to the vibration piece, the number of the piezoelectric elements is two, and the two piezoelectric elements are respectively arranged on the two supporting arms in a one-to-one correspondence manner.

Based on the above embodiment, the piezoelectric elements are deformed after passing through the first power-on mode or the second power-on mode and act on the supporting arms, the driving portion of the supporting arms can generate corresponding first displacement or second displacement along the second direction or the fourth direction, and the vibrating element can generate third displacement or fourth displacement along the second direction or the fourth direction according to the first displacement or the second displacement generated by the driving portion to expand and contract so as to generate vibration, in order to enable the vibrating element to generate the third displacement or the fourth displacement along the second direction or the fourth direction more easily, the number of the supporting arms and the number of the piezoelectric elements can be two, and the two piezoelectric elements are disposed on the two supporting arms in a one-to-one correspondence manner, and after the same voltage (for example, the same period, same amplitude and same initial phase of the voltage) is applied to the two piezoelectric elements, the two piezoelectric elements are simultaneously bent and deformed towards the first direction or the third direction, the driving parts of the two supporting arms can generate a first displacement or a second displacement along the second direction or the fourth direction simultaneously, and the two driving parts act on two sides of the vibration piece simultaneously so that the vibration piece can generate a third displacement or a fourth displacement along the second direction or the fourth direction more easily.

In some embodiments, the cleaning device further comprises a fixing seat, the fixing seat is provided with a mounting hole, and one end of the vibration piece, which deviates from the component to be cleaned, penetrates through the mounting hole.

Based on above-mentioned embodiment, through deviating from the one end setting of treating the clearance part with vibrations in the mounting hole of fixing base, the motion direction of vibrations piece has been restricted to the mounting hole of fixing base, and the fixing base plays the supporting role to the tip that vibrations piece deviates from the one end of treating the clearance part, has further strengthened vibrations piece stability when producing third displacement or fourth displacement along second direction or fourth direction. Meanwhile, the fixed seat can be connected with other external parts (a shell of the camera module), so that the whole installation portability of the cleaning device is enhanced.

In some embodiments, the fixing seat includes a first fixing portion, a second fixing portion, and a connecting portion, the first fixing portion is connected to the second fixing portion, the connecting portion is disposed at an end of the second fixing portion away from the first fixing portion, ends of the two supporting arms away from the component to be cleaned are respectively connected to the connecting portion, and a thickness of the connecting portion is between 3 mm and 5 mm in a direction parallel to the extension direction of the mounting hole.

Based on above-mentioned embodiment, thereby the design through connecting portion couples together support arm and second fixed part and realizes the fixed connection between support arm and the fixing base, can avoid fixing the support arm with other parts, realizes cleaning device's miniaturized design when reinforcing cleaning device's the connection compactness. Piezoelectric element produces crooked deformation towards first direction or third direction after the circular telegram to act on the support arm, along the direction that is on a parallel with the mounting hole extension, can be for between 3 millimeters to 5 millimeters through the thickness dimension with connecting portion, can reduce the area of contact between support arm and the second fixed part, piezoelectric element produces deformation extrusion or tensile support arm of being connected with it, makes the support arm produce corresponding crooked deformation more easily.

In some embodiments, the mounting hole is a through hole, one end of the vibration piece, which is away from the component to be cleaned, passes through the mounting hole and is located on one side of the first fixing portion, which is away from the second fixing portion, the vibration piece includes a first vibration section located on one side of the first fixing portion, which is away from the second fixing portion, the first vibration section is provided with a limiting ring, and the limiting ring is used for limiting the vibration piece from falling off from the fixing base along the extending direction of the mounting hole.

Based on the above embodiment, because the end of the vibration part departing from the component to be cleaned is movably connected with the mounting hole of the second fixing part, the vibration part has the possibility of being separated from the second fixing part in the process of moving along the extending direction of the mounting hole of the second fixing part, and the situation that the vibration part is separated from the second fixing part in the moving process can be effectively avoided through the design of the limiting ring.

In some embodiments, each driving portion has a first end surface close to the vibrating member, and the first end surface is matched with the outer peripheral surface of the vibrating member.

Based on the above embodiment, after each electrified piezoelectric element generates bending deformation in the first direction or the third direction (for example, the direction close to or away from the support arm), the driving portion can generate corresponding first displacement or second displacement in the second direction or the fourth direction, in order to enable the vibration element to effectively generate third displacement or fourth displacement according to the first displacement or second displacement generated by the driving portion so as to generate vibration, the effective contact area between the driving portion of the support arm and the vibration element is increased by designing the first end surface of the driving portion of the support arm close to the vibration element to be matched with the outer peripheral surface of the vibration element, so that the support arm generates the first displacement or the second displacement in the second direction or the fourth direction to push the vibration element to generate the corresponding third displacement or fourth displacement, and then realize shaking the flexible surface that produces vibrations and come the striking part of treating of piece, make the water droplet or the dust on the part of treating of camera module can be by effectual cleaing away, guaranteed the definition of the shooting image of camera module.

In some embodiments, the end surface of the end of the vibration part connected with the part to be cleaned is a second end surface, and the second end surface is a spherical surface protruding towards the part to be cleaned.

Based on the above embodiment, the end surface of the end of the vibrating member connected with the component to be cleaned is a second end surface, and the second end surface is a spherical surface protruding toward the component to be cleaned of the camera module. The piezoelectric element generates deformation after passing through the first electrifying mode or the second electrifying mode and acts on the supporting arm, the driving part of the supporting arm generates corresponding first displacement or second displacement along the second direction or the fourth direction, the vibration piece can generate a third displacement or a fourth displacement to expand and contract according to the first displacement or the second displacement generated by the driving part so as to generate vibration, the vibration piece is contacted with the surface of the part to be cleaned through the second end surface so as to transmit the vibration to the part to be cleaned, and because the second end of the vibration piece is spherical, the contact between the vibration piece and the part to be cleaned of the camera module is point contact, the loss of energy when the vibration piece is in contact with the part to be cleaned of the camera module is reduced, the vibration sense is enhanced, the vibration can be effectively transmitted to the part to be cleaned of the camera module, and then water drops or dust on the part to be cleaned of the camera module is effectively cleaned.

In a second aspect, embodiments of the present application provide a camera module, including: the camera treats the clearance part, sets up in the thing side of camera, foretell cleaning device, and the casing has and holds the cavity, and cleaning device and camera all are located and hold the cavity.

Based on the camera module in this application embodiment, have above-mentioned cleaning device's camera module, cleaning device can clear up effectively and treat the dirt (for example water droplet or dust) on the clearance part, and then has avoided effectively treating the dirt on the clearance part and to the sheltering from of the object that the camera was shot, so guarantee the definition that the camera module shot the image. The shell can be regarded as a bracket, on one hand, the shell provides support for the camera and the cleaning device, and on the other hand, the shell also provides convenience for installation between the camera and the cleaning device and external equipment (such as an automobile); secondly, camera and cleaning device may be installed in the outside of car, and camera and cleaning device then have the condition that appears damaging because of external factors (for example striking), through setting up in the chamber that holds of casing at camera and cleaning device, the casing can play good guard action to camera and cleaning device.

Cleaning device and camera module based on this application embodiment, piezoelectric element produces deformation after the circular telegram, thereby piezoelectric element sets up and makes this deformation act on the support arm and make the drive division drive shake the piece and do and stretch out the motion or the shrink motion produces vibrations on the support arm, thereby owing to shake the piece and wait to clear up the part and be connected, make the vibrations of shaking the piece can transmit and wait to clear up the part on, dirt (for example dust or water droplet) on waiting to clear up the part are shaken off by shaking, thereby avoided effectively waiting to clear up the sheltering from of dirt on the part other parts (for example camera module's camera lens), the event has guaranteed the definition that the image was shot to the camera module.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a vehicle-mounted camera in the prior art;

fig. 2 is a schematic structural diagram of a camera module according to an embodiment of the present application;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a schematic structural diagram of a camera module according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a cleaning device for a camera module according to an embodiment of the present application;

fig. 6 is a schematic cross-sectional view of a cleaning device for a camera module according to an embodiment of the present application.

Reference numerals: 10. a camera; 11. a lens; 12. coating a film layer; 100. a camera module; 110. a camera; 120. a component to be cleaned; 130. a cleaning device; 131. a piezoelectric element; 1311. an extension body; 1312. an energizing conductor; 132. a fixed seat; 1320. a first fixed part; 1321. a second fixed part; 13211. mounting holes; 1322. a support arm; 13221. a drive section; 13222. a first end face; 1323. a vibrating member; 13231. a first vibration section; 13232. a limiting ring; 13233. a second end face; 1324. a connecting portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1, as the automobile industry develops, the camera 10 is more and more important as the eyes of the vehicle in the field of safety driving assistance. The existing vehicle-mounted camera 10 outside the cabin is easily polluted by rain and dust due to long-term exposure, so that the user experience and driving safety are affected due to poor imaging quality of the camera 10. Therefore, in the prior art, an outermost lens 11 of the vehicle-mounted camera 10 outside the cabin requires coating, and the hydrophobic angle is 110 ° or even more than 120 °, but the coated layer 12 is of increasingly poor quality due to external factors, for example, the coated layer 12 may be corroded by acidic substances in rainwater, the corroded coated layer 12 cannot protect and hydrophobic the lens 11 of the camera 10, and the coated layer 12 is inconvenient to replace in the later period. Therefore, how to remove the dirt blocking the lens of the vehicle-mounted camera 10 to ensure that the imaging quality of the camera 10 is good is a problem to be solved urgently.

In order to solve the above-mentioned technical problem, referring to fig. 2 to 6, a first aspect of the present application provides a cleaning apparatus, the cleaning apparatus 130 can be used for a camera module 100, the cleaning apparatus 130 includes a supporting arm 1322, a piezoelectric element 131, and a vibrating element 1323. The supporting arm 1322 has a driving portion 13221, the piezoelectric element 131 deforms after being energized, the piezoelectric element 131 is disposed on the supporting arm 1322, so that the deformation acts on the supporting arm 1322 to enable the driving portion 13221 to drive the vibration member 1323 to do stretching movement or contraction movement to generate vibration, the vibration member 1323 drives the to-be-cleaned part 120 of the camera module 100 in contact with the vibration member to vibrate to clean dirt on the to-be-cleaned part 120, and therefore shielding of the dirt on the to-be-cleaned part 120 on a lens of the camera module 100 is effectively avoided, and definition of images shot by the camera module 100 is guaranteed.

The camera module 100 includes a camera 110, where an object side of the camera 110 refers to a side of the camera 110 close to a subject, and an image side of the camera 110 refers to a side of the camera 110 away from the subject. Light reflected by an object to be photographed passes through a first lens (a lens closest to the object side of the imaging camera is referred to as a first lens) of the camera 110, is processed by the photosensitive chip, and is imaged on the image side of the camera 110. The member to be cleaned 120 of the camera module 100 is mainly a member that can protect the lens front end of the camera 110 and at the same time has good light transmittance itself. For example, the to-be-cleaned member 120 of the camera module 100 may be a camera protection cover, the camera protection cover is disposed at the lens front end of the camera 110, and can effectively prevent dirt such as water drops or dust from directly adhering to the lens front end of the camera 110, and meanwhile, the to-be-cleaned member 120 of the camera module 100 may be made of a transparent resin material, and the camera protection cover is disposed at the lens front end of the camera 110, so that light reflected by a photographed object can smoothly enter the first lens of the camera 110 through the camera protection cover, and is processed by the photosensitive chip, and forms an image on the image side of the camera 110.

Referring to fig. 2-6, the supporting arm 1322 has a driving portion 13221, and the driving portion 13221 can be disposed at any position on the supporting arm 1322, as long as the driving portion 13221 can contact with the vibration element 1323. In order for the driving part 13221 to drive the vibration member 1323 in contact therewith to make an extending movement or a contracting movement, the driving part 13221 may be provided at an end of the support arm 1322 close to the member to be cleaned 120 of the camera module 100. The support arm 1322 may be made of a rigid material or an elastic material, and regardless of the material of the support arm 1322, the support arm 1322 is elastically deformable under the action of an external force (the support arm can be restored to its original shape after the external force is removed). The support arm 1322 may be a cylindrical-like structure having a rectangular cross section or a cylindrical-like structure having a circular cross section, and the axis of the support arm 1322 may be a straight line or a curved line (e.g., an arc line).

The vibration element 1323 is disposed at one side of the supporting arm 1322, and the driving portion 13221 of the supporting arm 1322 extends toward the direction close to the vibration element 1323 and contacts with the vibration element 1323. The vibrating element 1323 may be a rod-shaped structure with a rectangular cross section or a rod-shaped structure with a circular cross section. The driving portion 13221 of the support arm 1322 may abut against the outer peripheral wall of the oscillator 1323, or may be fixedly connected to the outer peripheral wall of the oscillator 1323. Of course, no matter what connection method is adopted between the driving portion 13221 of the supporting arm 1322 and the vibrating member 1323, only the supporting arm 1322 needs to be capable of enabling the driving portion 13221 to drive the vibrating member 1323 to perform an extending motion or a retracting motion in the deformation process. When the driving portion 13221 of the support arm 1322 abuts against the outer peripheral wall of the vibration member 1323, the driving portion 13221 of the support arm 1322 and the outer peripheral wall of the vibration member 1323 can achieve relative movement therebetween through friction force, at this time, the friction coefficient between the driving portion 13221 of the support arm 1322 and the outer peripheral wall of the vibration member 1323 should be larger to a certain extent as good as possible, and "a certain extent" here indicates that the friction coefficient between the driving portion 13221 of the support arm 1322 and the outer peripheral wall of the vibration member 1323 at least satisfies the requirement that the driving portion 13221 of the support arm 1322 can drive the vibration member 1323 to perform extension movement or contraction movement. In order to enable the support arm 1322 to better drive the driving portion 13221 to drive the vibration member 1323 to perform an extending motion or a retracting motion after the support arm 1322 is deformed, optionally, in this embodiment, the driving portion 13221 of the support arm 1322 is fixedly connected to the vibration member 1323. The driving portion 13221 of the supporting arm 1322 may be fixedly connected to the vibration member 1323 by gluing, may be fixedly connected to the vibration member 1323 by welding, and may be integrally formed with the vibration member 1323 by 3D printing.

One end of the vibration member 1323 near the member to be cleaned 120 of the camera module 100 is connected to the member to be cleaned 120. The vibrating element 1323 may be fixedly connected to the to-be-cleaned element 120 of the camera module 100, may abut against the to-be-cleaned element 120 of the camera module 100, and may be detachably connected to the to-be-cleaned element 120 of the camera module 100. Of course, no matter what connection method is adopted between the vibrating element 1323 and the to-be-cleaned component 120 of the camera module 100, the vibrating element 1323 only needs to be in contact with the to-be-cleaned component 120 of the camera module 100 in the process of generating vibration by extending movement or contracting movement, so that the vibration can be smoothly transmitted to the to-be-cleaned component 120 of the camera module 100, and water drops or dust on the to-be-cleaned component 120 of the camera module 100 can be shaken off.

The piezoelectric element 131 is disposed on a side of the support arm 1322 facing away from the vibration component 1323, the piezoelectric element 131 may be disposed on an outer side wall surface of an end of the support arm 1322 facing away from the driving portion 13221, and the piezoelectric element 131 may be connected to the support arm 1322 by gluing. The piezoelectric element 131 is configured to deform when energized, and the direction in which the piezoelectric element 131 deforms is related to the voltage applied across the piezoelectric element 131. Specifically, the piezoelectric element 131 is configured to extend and deform along a first direction in the first power-on mode (the first direction is a direction in which the supporting arm 1322 points to the vibrating element 1323), which may be understood as a deformation in a thickness direction of the piezoelectric element 131 caused by an increase in thickness of the piezoelectric element 131 in the first power-on mode, and the piezoelectric element 131 is configured to deform along a third direction in the second power-on mode (the third direction is a direction in which the vibrating element 1323 points to the supporting arm 1322) which may be understood as a deformation in a thickness direction of the piezoelectric element 131 caused by a decrease in thickness of the piezoelectric element 131 in the second power-on mode. Here, the first energization mode and the second energization mode may be understood as that the voltage applied across the piezoelectric element 131 is an alternating voltage, and the piezoelectric element 131 is in the first energization mode when the voltage applied across the piezoelectric element 131 is a forward voltage, and the piezoelectric element 131 is in the second energization mode when the voltage applied across the piezoelectric element 131 is a reverse voltage. For example, the piezoelectric element 131 may be a piezoelectric ceramic, the piezoelectric ceramic includes an extension body 1311 and a current conductor 1312, the extension body 1311 is disposed on the outer circumferential wall of the support arm 1322, one end of the current conductor 1312 is connected to the extension body 1311, and the other end of the current conductor 1312 is connected to an external power source, wherein the extension body 1311 deforms in the thickness direction of the current conductor 1312 when the current conductor 1312 is applied. When a voltage of +5V is applied to two ends of the piezoelectric element 131 (i.e., in the first power-on mode), the piezoelectric element 131 may extend and deform in a direction (i.e., in the first direction) close to the support arm 1322; similarly, when a voltage of-5V is applied across the piezoelectric element 131 (i.e., the second power-on mode), the piezoelectric element 131 can be extended and deformed in a direction away from the support arm 1322 (i.e., the third direction).

The piezoelectric element 131 is deformed after being energized, and then the supporting arm 1322 connected with the piezoelectric element is driven to deform. Specifically, when the piezoelectric element 131 is used in the first power-on mode, the piezoelectric element 131 generates bending deformation towards the first direction, and since the piezoelectric element 131 is disposed at an end of the support arm 1322 away from the driving portion 13221, and an area of a contact surface between the piezoelectric element 131 and the support arm 1322 is equal to an area of a cross section of the piezoelectric element 131 along a direction perpendicular to the first direction, after the piezoelectric element 131 is powered on, the piezoelectric element 131 extends towards the first direction to generate bending deformation and presses the support arm 1322, so that the support arm 1322 also generates bending deformation towards the first direction. Similarly, when the piezoelectric element 131 is in the second power-on mode, the piezoelectric element 131 generates bending deformation in the third direction, and since the piezoelectric element 131 is disposed at the end of the support arm 1322 away from the driving portion 13221, and the area of the contact surface between the piezoelectric element 131 and the support arm 1322 is equal to the area of the cross section of the piezoelectric element 131 along the direction perpendicular to the first direction, after the piezoelectric element 131 is powered on, the piezoelectric element 131 extends in the third direction to generate bending deformation and stretch the support arm 1322, so that the support arm 1322 also generates bending deformation in the third direction. It should be noted that the bending deformation of the support arm 1322 in the first direction or the third direction should be a small magnitude bending deformation.

The supporting arm 1322 is deformed such that the driving portion 13221 drives the vibrating member 1323 to perform an extending movement or a retracting movement to form a vibration to clean the component 120 to be cleaned of the camera module 100. Specifically, the piezoelectric element 131 is configured to drive the supporting arm 1322 to generate bending deformation in the first direction during the first power-on mode, so that the driving portion 13221 drives the vibration element 1323 to perform an extending motion in the second direction, at this time, if the axis of the supporting arm 1322 is linear, the supporting arm 1322 moves in the first direction under the pressing action of the piezoelectric element 131 to generate bending deformation, and drives the driving portion 13221 to drive the vibration element 1323 to perform an extending motion in the second direction during the recovery deformation of the supporting arm 1322, if the axis of the supporting arm 1322 is curved (the axis thereof is curved in a direction opposite to the first direction), the supporting arm 1322 generates bending deformation in the first direction under the pressing action of the piezoelectric element 131, and drives the driving portion 13221 to drive the vibration element 1323 to perform an extending motion in the second direction during the deformation of the supporting arm 1322. The piezoelectric element 131 is configured to drive the driving arm 1322 to generate bending deformation in the third direction during the second power-on mode, so that the driving portion 13221 drives the vibration element 1323 to perform contraction movement in the fourth direction, at this time, if the axis of the supporting arm 1322 is linear, the supporting arm 1322 is deformed by the stretching action of the piezoelectric element 131 in the direction away from the vibration element 1323, and the driving portion 13221 drives the vibration element 1323 to perform contraction movement in the fourth direction during the deformation of the supporting arm 1322, if the axis of the supporting arm 1322 is curved (the axis thereof is bent in the same direction as the third direction), the supporting arm 1322 is deformed by the stretching action of the piezoelectric element 131 in the third direction, and the driving portion 13221 is driven by the supporting arm 1322 to perform contraction movement in the fourth direction during the deformation of the supporting arm 1322. The second direction is a direction in which the vibration element 1323 moves toward the component to be cleaned 120, or when the moving direction of the vibration element 1323 is parallel to a direction in which the image side of the camera module 100 points to the object side, the second direction is a direction in which the image side of the camera module 100 points to the object side. Similarly, the fourth direction is a direction in which the vibration element 1323 moves away from the component to be cleaned 120, or when the moving direction of the vibration element 1323 is parallel to a direction in which the image side of the camera module 100 points to the object side, the second direction is a direction in which the object side of the camera module 100 points to the image side.

For example, in the first power-on mode of the piezoelectric element 131, the supporting arm 1322 generates bending deformation in the first direction, which causes the driving portion 13221 of the supporting arm 1322 to tilt in a direction away from the vibration element 1323, so as to generate a first displacement, where a displacement change amount in a second direction after the driving portion 13221 of the supporting arm 1322 is tilted and before the driving portion is tilted is defined as the first displacement. The driving portion 1322 of the supporting arm 1322 pushes the vibration element 1323 to perform an extending motion along the second direction due to the generation of the first displacement, that is, the vibration element 1323 generates a third displacement, wherein a displacement change amount of the vibration element 1323 along the second direction is defined as the third displacement. Similarly, in the second power-on mode of the piezoelectric element 131, the supporting arm 1322 generates bending deformation in the third direction, which causes the driving portion 13221 of the supporting arm 1322 to converge toward the vibrating element 1323, so as to generate a first displacement, where a displacement change amount in the fourth direction after the driving portion 13221 of the supporting arm 1322 converges and before converges is defined as a second displacement. The driving portion 13221 of the supporting arm 1322 pushes the vibration element 1323 to perform a contraction motion along the fourth direction due to the generation of the second displacement, that is, the vibration element 1323 generates a fourth displacement, wherein a displacement change amount of the vibration element 1323 along the fourth direction is defined as the fourth displacement.

Of course, the angle change of the driving portion 13221 of the supporting arm 1322 should be a small amplitude when tilting away from the vibrating element 1323 or converging toward the vibrating element 1323, so along the second direction or the fourth direction, the first displacement or the second displacement generated by the driving portion 13221 should also be a small amplitude displacement change, so that the third displacement or the fourth displacement generated by the vibrating element 1323 along the second direction or the fourth direction is also a small amplitude displacement change, and further the vibrating element 1323 makes an extending or contracting motion along the second direction and the fourth direction to form vibration when the piezoelectric element 131 is energized with continuous alternating current. The first direction is opposite to the third direction, the second direction is opposite to the fourth direction, the direction of the first displacement is the same as the direction of the third displacement, the direction of the first displacement is opposite to the direction of the second displacement, and the direction of the third displacement is opposite to the direction of the fourth displacement.

It should be noted that, first, the magnitude of the first displacement and the magnitude of the second displacement may be related to the magnitude of the voltage applied across the piezoelectric element 131, or the degree of deformation of the piezoelectric element 131 itself after being energized, or the rigidity strength of the support arm 1322 itself. For example, the magnitude of the first displacement generated by the driving portion 13221 when the voltage applied across the piezoelectric element 131 is +10V may be larger than the magnitude of the first displacement generated by the driving portion 13221 when the voltage applied across the piezoelectric element 131 is + 5V. Secondly, the magnitude of the third displacement and the magnitude of the fourth displacement may be related to the friction coefficient between the driving portion 13221 of the support arm 1322 and the vibration member 1323, or the contact area between the driving portion 13221 of the support arm 1322 and the vibration member 1323, or the connection structure between the driving portion 13221 of the support arm 1322 and the vibration member 132. For example, the magnitude of the third displacement or the fourth displacement generated when the driving portion 13221 of the support arm 1322 is made of an elastic material (e.g., elastic rubber) may be greater than the magnitude of the third displacement or the fourth displacement generated when the driving portion 13221 of the support arm 1322 is made of a rigid material (e.g., aluminum alloy). And since a small part of energy is lost in the process of transferring, the value of the third displacement should be smaller than that of the first displacement, and the value of the fourth displacement should be smaller than that of the second displacement. Again, the movement trace of the vibration member 1323 is related to the waveform of the voltage applied across the piezoelectric element 131, or the shape structure of the vibration member 1323 itself. For example, when the vibration element 1323 reciprocates along a horizontal straight line, a square wave ac voltage may be applied to both ends of the piezoelectric element 131, and when the vibration element 1323 rotates around a certain center of a circle, the vibration element 1323 may be a sphere.

In some embodiments, for example, a square-wave voltage signal may be applied to the two ends of the piezoelectric element 131, and assuming that the period T of the voltage signal is 0.02S, the amplitude a is ± 5V, and the initial phase Φ is₀＝0°。

When T is 0-0.01S, and the voltage across the piezoelectric element 131 is +5V (i.e., the first power-on mode mentioned above), the piezoelectric element 131 extends and deforms in the first direction, and presses the supporting arm 1322, the supporting arm 1322 bends and deforms toward the vibrating element 1323, and at this time, the driving unit 13221 generates the first displacement in the second direction, and since the supporting arm 1322 bends and deforms toward the vibrating element 1323, the direction of the first displacement should be the same as the second direction, in other words, the direction of the first displacement is the direction pointing to the object side on the image side of the camera module 100. Since the driving portion 13221 contacts with the vibration element 1323, the driving portion 13221 generates a first displacement along the second direction and simultaneously drives the vibration element 1323 to generate a third displacement along the second direction, that is, the vibration element 1323 moves towards the direction close to the component 120 to be cleaned.

Similarly, when T is equal to 0.01-0.02S, and the voltage across the piezoelectric element 131 is correspondingly-5V (i.e., the second power-on mode mentioned above), the piezoelectric element 131 extends and deforms in the third direction, and stretches the supporting arm 1322, the supporting arm 1322 bends and deforms toward the direction away from the vibration element 1323, and at this time, the driving portion 13221 generates the second displacement in the fourth direction, and since the supporting arm 1322 bends and deforms toward the direction away from the vibration element 1323, the direction of the second displacement should be the same as the fourth direction, in other words, the direction of the second displacement is the direction in which the object side of the camera module 100 points to the image side. Since the driving portion 13221 contacts with the vibration element 1323, the driving portion 13221 generates a second displacement along the fourth direction and simultaneously drives the vibration element 1323 to generate a fourth displacement along the fourth direction, that is, the vibration element 1323 moves in a direction away from the component 120 to be cleaned.

In summary, during one period T, when T is 0 to 1/2T, the vibration member 1323 moves in the second direction by the third displacement toward the member to be cleaned 120, and when T is 1/2T-T, the vibration member 1323 moves in the fourth direction by the fourth displacement toward the member to be cleaned 120. Since the voltage applied to the two ends of the piezoelectric element 131 is periodically changed, the vibration member 1323 may repeatedly expand and contract in the second direction and the fourth direction over a period of time to generate vibration. The vibrating element 1323 is connected to the to-be-cleaned component 120 to transmit vibration to the to-be-cleaned component 120, so that dirt adhered to the to-be-cleaned component 120 can be shaken off by the vibration, and therefore shielding of the dirt on the to-be-cleaned component 120 on a lens of the camera module 100 is effectively avoided, and definition of images shot by the camera module 100 is guaranteed. It can be understood that the vibration frequency of the vibration member 1323 is related to the frequency of the voltage applied across the piezoelectric element 131, and the higher the frequency of the voltage across the piezoelectric element 131, the higher the frequency of vibration of the vibration member 1323, so the vibration cleaning effect of the member to be cleaned 120 is better.

Referring to fig. 2 to 6, the piezoelectric element 131 deforms after passing through the first power-on mode or the second power-on mode, and acts on the supporting arm 1322, the supporting arm 1322 deforms in the first direction or the third direction, so that the driving portion 13221 drives the vibrating element 1323 to perform an extending or contracting motion in the third direction or the fourth direction, in order to enable the vibrating element 1323 to perform a telescopic motion in the third direction or the fourth direction better under the action of the driving portion 13221 to form a vibration to impact the surface of the component 120 to be cleaned, so that water droplets or dust on the component 120 to be cleaned of the camera module 100 can be effectively removed, and definition of a captured image of the camera module 100 is ensured, optionally, in this embodiment, the first direction and the second direction are perpendicular to each other.

Referring to fig. 2-6, the higher the frequency of the voltage applied across the piezoelectric element 131, the higher the frequency of the reciprocating motion of the vibrating element 1323 in the second direction and the fourth direction, which ultimately makes the vibration cleaning effect of the component 120 to be cleaned better, in order to enhance the stability of the vibrating element 1323 during the reciprocating motion, in this embodiment, the number of the supporting arms 1322 is two, the two supporting arms 1322 are respectively located at two opposite sides of the vibrating element 1323, and each supporting arm 1322 is provided with a driving portion 13221 extending toward the direction close to the vibrating element 1323 and abutting against the vibrating element 1323. The piezoelectric elements 131 are deformed after being energized, and mainly act on the support arms 1322 to deform the support arms 1322 accordingly, so that the number of the piezoelectric elements 131 may be multiple (two or more), and each piezoelectric element 131 is disposed on a surface of one side of the support arm 1322 facing away from the vibration element 1323, so that the two support arms 1322 generate the same deformation under the squeezing or stretching action of the piezoelectric elements 131, so that both sides of the vibration element 1323 are subjected to the same external force action exerted by the corresponding driving portions 13221, and the piezoelectric elements 131 are disposed on the two support arms 1322 equally. Optionally, in this embodiment, the number of the piezoelectric elements 131 is two, and the two piezoelectric elements 131 are disposed on the two support arms 1322 in a one-to-one correspondence.

Specifically, the two supporting arms 1322 are located at two sides of the vibration element 1323 and are both spaced apart from the vibration element 1323, and the two supporting arms 1322 may be symmetrically disposed about the linear motion track of the vibration element 1323. The driving portions 13221 are each located at an end of its corresponding support arm 1322 near the member to be cleaned 120. The piezoelectric elements 131 are arranged on the surface of the supporting arm 1322 facing away from the vibrating element 1323, and the two piezoelectric elements 131 are arranged on the side of the supporting arm 1322 facing away from the part 120 to be cleaned.

It should be noted that, in order to ensure that the two supporting arms 1322 can be deformed simultaneously under the action of their corresponding piezoelectric elements 131 to push the vibration element 1323 to generate the third displacement or the fourth displacement along the second direction and the fourth direction, it can be understood that the voltage signals should be applied to the two piezoelectric elements 131 simultaneously, and the voltage signals applied to the two piezoelectric elements 131 should be the same, for example, the period T of the voltage signal, the amplitude a of the voltage signal, and the initial phase phi of the voltage signal₀The same is true.

Referring to fig. 4-6, the supporting arm 1322 provides a supporting function for the vibrating element 1323, and provides a driving force for the vibrating element 1323, and the supporting arm 1322 is movably connected to the vibrating element 1323, so as to further enhance the stability of the vibrating element 1323 during the movement process. The fixing seat 132 is provided with a mounting hole 13211, and one end of the vibration element 1323 departing from the component 120 to be cleaned is arranged in the mounting hole 13211 in a penetrating manner. The arrangement of the mounting hole 13211 limits the moving direction of the vibration element 1323, and the fixing seat 132 supports the end of the vibration element 1323 at the end facing away from the component 120 to be cleaned, so as to further enhance the stability of the vibration element 1323 when generating the third displacement or the fourth displacement in the second direction or the fourth direction. Meanwhile, the fixing seat 132 can be connected with other external components (the shell of the camera module), so that the installation portability of the whole cleaning device is enhanced.

The fixing base 132 may include a first fixing portion 1320 and a second fixing portion 1321 connected to the first fixing portion 1320, wherein the second fixing portion 1321 is disposed on a side of the first fixing portion 1320 close to the component 120 to be cleaned, and the first fixing portion 1320 and the second fixing portion 1321 may be fixed therebetween in a welding manner, and the first fixing portion 1320 and the second fixing portion 1321 may also be fixed therebetween in a gluing manner, so as to simplify a processing process between the first fixing portion 1320 and the second fixing portion 1321, in this embodiment, the first fixing portion 1320 and the second fixing portion 1321 may be integrally formed in a 3D printing manner.

The mounting hole 13211 extends from a surface of the second fixing portion 1321 facing away from the first fixing portion 1320 toward a direction close to the first fixing portion 1320, in other words, the mounting hole 13211 extends from a surface of the second fixing portion 1321 facing away from the first fixing portion 1320 along a direction from an object side of the camera 110 to an image side of the camera 110, and one end of the vibration element 1323 facing away from the component 120 to be cleaned is inserted into the mounting hole 13211. The mounting hole 13211 of the fixing portion 132 may be a square hole or a circular hole. When the mounting hole 13211 of the fixing portion 132 is a square hole, the mounting hole 13211 of the fixing portion 132 may be a through hole or a blind hole, and the vibration member 1323 may correspond to a columnar structure having a square cross section; when the mounting hole 13211 of the fixing portion 132 is a circular hole, the mounting hole 13211 of the fixing portion 132 may be a through hole or a blind hole, and the vibration element 1323 may correspond to a columnar structure having a circular cross section. It is understood that when the mounting hole 13211 of the fixing portion 132 is a through hole, the mounting hole 13211 extends from the object side to the image side of the camera module 100 and penetrates through the first fixing portion 1320, and when the mounting hole 13211 of the fixing portion 132 is a blind hole, the mounting hole 13211 extends from the object side to the image side of the camera module 100 by a certain distance, and the "certain distance" should be understood that the depth dimension of the mounting hole 13211 at least satisfies the magnitude of the third displacement or the fourth displacement generated by the vibration member 1323 in the second direction and the fourth direction.

When the mounting hole 13211 of the fixing portion 132 is a through hole, in order to prevent the vibrating element 1323 from being separated from the mounting hole 13211 of the fixing portion 132 along a direction parallel to the extending direction of the mounting hole 13211 (i.e., parallel to the second direction or the fourth direction) during the movement, in the embodiment, after one end of the vibrating element 1323 facing away from the component 120 to be cleaned of the camera module 100 passes through the mounting hole 13211, the end of the vibrating element 1323 is located on one side of the first fixing portion 1320 facing away from the component 120 to be cleaned, that is, one end of the vibrating element 1323 penetrates through the mounting hole 13211 of the fixing portion 132. The vibration element 1323 includes a first vibration section 13231 located on a side of the first fixing portion 1320 facing away from the component 120 to be cleaned, the first vibration section 13231 of the vibration element 1323 is provided with a limiting ring 13232, and the limiting ring 13232 is used for limiting the vibration element 1323 from being separated from the fixing seat 132 along the extending direction of the mounting hole 13211 of the fixing portion 132. The limiting ring 13232 may be connected to the first vibrating section 13231 of the vibrating element 1323 by welding, and the limiting ring 13232 may also be integrally formed with the vibrating element 1323. The cross-sectional area of the retainer ring 13232 is larger than the cross-sectional area of the mounting hole 13211 of the fixing portion 132. The limiting ring 13232 can be disposed at any position of the first vibrating section 13231 of the vibrating element 1323, and only the requirement that the limiting ring 13232 is located at a side of the first fixing portion 1320 away from the component 120 to be cleaned of the camera module 100 is satisfied.

In some embodiments, when the mounting hole 13211 of the fixing portion 132 is a blind hole (not shown), one end of the vibration element 1323 is inserted into the mounting hole 13211 of the fixing portion 132, and the end of the vibration element 1323 is connected to a limiting block (not shown) that limits the vibration element 1323 from being separated along the extending direction of the mounting hole 13211, the limiting block may be fixedly connected to the vibration element 1323 by welding, and the limiting block may also be integrally formed with the vibration element 1323.

Referring to fig. 4-6, the supporting arm 1322 may be connected to other components (e.g., the housing), and in order to enhance the structural compactness of the cleaning apparatus and achieve the advantage of miniaturization of the cleaning apparatus, an end of the supporting arm 1322 facing away from the component 120 to be cleaned may be connected to the second fixing portion 1321 of the fixing base 132. For example, after the same piezoelectric element 131 applies the same voltage signal, when the area of the opposite contact surface between the support arm 1322 and the second fixing portion 1321 is larger, the degree of deformation of the support arm 1322 due to being pressed or stretched by the piezoelectric element 131 may be smaller than that of the deformation of the support arm 1322 due to being pressed or stretched by the piezoelectric element 131 when the area of the opposite contact surface between the support arm 1322 and the second fixing portion 1321 is smaller. In order to effectively make the vibrating element 1323 extend and contract along a direction perpendicular to the deformation direction of the piezoelectric element 132 to generate vibration, in this embodiment, the fixing base 132 may further include a connecting portion 1324, the connecting portion 1324 is used to connect the supporting arm 1322 to the second fixing portion 1321, the connecting portion 1324 is disposed at an end of the second fixing portion 1321 away from the first fixing portion 1320, ends of the two supporting arms 1322 away from the component 120 to be cleaned are respectively connected to the connecting portion 1324, and a thickness of the connecting portion 1324 is between 3 mm and 5 mm along an extending direction parallel to the mounting hole 13211.

Specifically, the connecting portion 1324 may be fixedly connected to the second fixing portion 1321 and the support arm 1322 by welding, and the connecting portion 1324 may also be fixedly connected to the second fixing portion 1321 and the support arm 1322 by gluing. Since the flatness of the connection portion 1324, the second fixing portion 1321 and the supporting arm 1322 may affect the degree of bending deformation of the supporting arm 1322 in the direction approaching to or departing from the vibration component 1323, after the piezoelectric element 131 is powered on, in order to enable the supporting arm 1322 to be effectively bent and deformed, optionally, the connection portion 1324 may be further integrally formed with the second fixing portion 1321 and the supporting arm 1322. Meanwhile, the integrated forming of the connecting portion 1324, the second fixing portion 1321 and the supporting arm 1322 also reduces the processing difficulty of the cleaning apparatus 130. The thickness dimension of the connecting portion 1324 may be 3 mm, 4 mm, or 5 mm in the extending direction parallel to the mounting hole 13211 of the fixing portion 132.

The supporting arm 1322 and the second fixing portion 1321 are connected through the design of the connecting portion 1324, so that the supporting arm 1322 and the fixing seat 132 are fixedly connected, the supporting arm 1322 can be prevented from being fixed by other components, the connection tightness of the cleaning device is enhanced, and meanwhile the cleaning device is miniaturized. When the piezoelectric element 131 is energized, it deforms in the first direction or the third direction and acts on the support arm 1322, and the thickness of the connecting portion 1324 may be 3 mm to 5 mm in a direction parallel to the extending direction of the mounting hole 13211, so that the contact area between the support arm 1322 and the second fixing portion 1321 can be reduced, and the piezoelectric element 131 deforms to press or stretch the support arm 1322 connected thereto, so that the support arm is more likely to bend and deform accordingly.

Referring to fig. 2-3, since one end of the vibration element 1323 close to the fixing portion 1321 is movably connected to the mounting hole 13211 of the fixing portion 132, the driving portions 13221 of the two supporting arms 1322 are abutted to the vibration element 1323. In order to effectively press or stretch the supporting arm 1322 by the deformation of each energized piezoelectric element 131, the supporting arm 1322 is bent and deformed to drive the vibration element 1323 to vibrate along the second direction and the fourth direction. In this embodiment, each driving portion 13221 has a first end surface 13222 close to the vibration member 1323, and the first end surface 13222 is fitted to the outer circumferential surface of the vibration member 1323. For example, the vibration element 1323 may have a cylindrical shape, the first end surface 13222 of the driving portion 13221 may have a circular arc shape correspondingly, and when each driving portion 13221 abuts against the vibration element 1323, the first end surface 13222 of each driving portion 13221 abuts against the outer peripheral wall surface of the vibration element 1323. By designing the first end surface 13222 of the driving portion 13221 to be matched with the outer peripheral surface of the vibration piece 1323, the effective contact area between the driving portion 13221 and the vibration piece 1323 is increased, so that the support arm 1322 after bending deformation can effectively push the vibration piece 1323 and enable the vibration piece 1323 to generate vibration along the second direction and the fourth direction, the vibration piece 1323 is in contact with the component 120 to be cleaned and transmits the vibration to the component 120 to be cleaned, water drops or dust on the component 120 to be cleaned of the camera module 100 can be effectively removed, and the definition of a shot image of the camera module 100 is ensured.

Referring to fig. 2-3, in order to further reduce energy loss to ensure that water droplets or dust on the component 120 to be cleaned of the camera module 100 can be effectively shaken off after the vibration is transmitted to the component 120 to be cleaned of the camera module 100, the end surface of the end of the vibration element 1323 connected to the component 120 to be cleaned is a second end surface 13233, and the second end surface 13233 is a spherical surface protruding toward the component 120 to be cleaned of the camera module 100. When the piezoelectric element 131 is energized, the piezoelectric element 131 deforms in the first direction or the third direction and acts on the supporting arm 1322, the supporting arm 1322 deforms in a bending manner in a direction approaching or departing from the vibrating element 1323, the driving portion 13221 generates a first displacement or a second displacement in the second direction or the fourth direction to push the vibrating element 1323 in contact with the supporting arm to generate a third displacement or a fourth displacement so as to form vibration, the second end face 13233 of the vibrating element 1323 abuts against the surface of the component 120 to be cleaned of the camera module 100, and the second end face 13233 of the vibrating element 1323 is spherical, so that the contact between the vibrating element 1323 and the component 120 to be cleaned of the camera module 100 is point contact, the loss of energy when the vibrating element 1323 contacts with the component 120 to be cleaned of the camera module 100 is reduced, and the vibration can be effectively transmitted to the component 120 to be cleaned of the camera module 100, thereby effectively cleaning away water droplets or dust on the member to be cleaned 120 of the camera module 100. Meanwhile, since the second end surface 13233 of the vibration element 1323 is spherical, the second end surface 13233 of the vibration element 1323 can be ensured to be effectively contacted with the surface of the component 120 to be cleaned when the component 120 to be cleaned of the camera module 100 is inclined.

In a second aspect of the present application, a camera module 100 is provided, where the camera module 100 includes a camera 110, a component to be cleaned 120, and the above-mentioned cleaning device 130. The device to be cleaned 130 is disposed on the object side of the camera 110, and the camera 110 and the cleaning device 130 are disposed on the same side of the component to be cleaned 120. With the camera module 100 of the cleaning device, the cleaning device can effectively clean up dirt (such as water drops or dust) on the part 120 to be cleaned, and further effectively avoid the shielding of the dirt on the part 120 to be cleaned on an object shot by the camera 110, so that the definition of an image shot by the camera module 100 is ensured.

The camera 110 is a precision instrument and is expensive, and the camera 110 and the cleaning device may be installed outside the automobile according to actual conditions, so that the camera 110 and the cleaning device may be damaged due to external factors (e.g., impact). In order to prolong the service life of the camera 110, in the embodiment, the camera module 100 may further include a housing (not shown in the figure), the housing is hollow to form a receiving chamber, and the cleaning device 130 and the camera 110 are located in the receiving chamber. Through in camera 110 and cleaning device setting in the chamber that holds of casing, the casing can play good guard action to camera 110 and cleaning device.

Of course, the housing may be a completely closed box or an incompletely closed box. When the housing is a completely closed box, the part 120 to be cleaned may correspond to a side of the box opposite to the lens of the camera 110, and the vibrating member 132 of the cleaning device 130 is connected to the side. And the side of the case opposite to the lens of the camera 110 must have a light-transmitting area, which may be the entire side of the case opposite to the lens of the camera 110, or a part of the side of the case opposite to the lens of the camera 110. No matter how the light-transmitting area is set, only the light reflected by the object to be photographed can smoothly pass through the light-transmitting area and be collected by the camera 110. When the casing is an incompletely closed box, that is, an opening for the lens front end of the camera 110 to extend out is formed in the side surface of the box opposite to the lens of the camera 110, at this time, the to-be-cleaned part 120 may be a camera protection cover covering the lens front end of the camera 110, the vibration part 132 of the cleaning device 130 is connected with the protection cover, and the protection cover has light transmittance.

Through the setting of casing, the casing can be regarded as the support, and the casing provides the support for camera 110 and cleaning device 130 on the one hand, and the casing on the other hand also provides convenience for the installation between camera 110 and cleaning device 130 and external equipment (for example car).

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (11)

1. A cleaning apparatus, comprising:

a support arm having a drive section;

the vibration piece is contacted with the driving part of the supporting arm, and one end of the vibration piece is contacted with the part to be cleaned;

the piezoelectric element is arranged on the supporting arm and used for being deformed after being electrified and driving the supporting arm to deform, and the deformation generated by the supporting arm enables the driving part to drive the vibration piece to do stretching movement or contraction movement so as to drive the part to be cleaned to vibrate.

2. The cleaning apparatus as claimed in claim 1,

the piezoelectric element is used for driving the supporting arm to bend towards a first direction to generate deformation in a first power-on mode, so that the driving part drives the vibration piece to do the extending motion along a second direction;

the piezoelectric element is used for driving the supporting arm to bend towards a third direction to generate deformation in a second electrification mode, so that the driving part drives the vibration piece to do the contraction motion along a fourth direction;

wherein the first direction is opposite to the third direction and the second direction is opposite to the fourth direction.

3. The cleaning apparatus as claimed in claim 2,

the first direction is perpendicular to the second direction.

4. The cleaning apparatus as claimed in claim 1,

the driving part of the supporting arm is fixedly connected with the vibrating piece.

5. The cleaning apparatus as claimed in claim 1,

the number of the supporting arms is two, the two supporting arms are respectively positioned on two opposite sides of the vibration piece, and the driving part of each supporting arm is abutted against the vibration piece;

the number of the piezoelectric elements is two, and the two piezoelectric elements are correspondingly arranged on the two supporting arms one by one respectively.

6. The cleaning apparatus as claimed in claim 5,

the cleaning device further comprises a fixed seat, the fixed seat is provided with a mounting hole, and one end of the vibration part, which deviates from the part to be cleaned, penetrates through the mounting hole.

7. The cleaning apparatus as claimed in claim 6,

the fixing base includes first fixed part, second fixed part and connecting portion, first fixed part with the second fixed part is connected, connecting portion set up in the one end that deviates from of second fixed part the first fixed part, two the one end of support arm deviates from treat that the clearance part is equallyd divide respectively with connecting portion are connected, along being on a parallel with the direction that the mounting hole extends, the thickness dimension of connecting portion is between 3 millimeters to 5 millimeters.

8. The cleaning apparatus as claimed in claim 7,

the mounting hole is a through hole, one end of the vibration piece, which deviates from the component to be cleaned, penetrates through the mounting hole and is located on one side, which deviates from the second fixing part, of the first fixing part, the vibration piece comprises a first vibration section, which is located on one side, which deviates from the second fixing part, of the first fixing part, the first vibration section is provided with a limiting ring, and the limiting ring is used for limiting the vibration piece to fall off along the extending direction of the mounting hole and the fixing seat.

9. The cleaning apparatus as claimed in claim 5,

each driving part is provided with a first end surface close to the vibration part, and the first end surface is matched with the peripheral surface of the vibration part.

10. The cleaning apparatus as claimed in claim 1,

the end face of one end, connected with the part to be cleaned, of the vibrating piece is a second end face, and the second end face is a spherical surface protruding towards the part to be cleaned.

11. A camera module is characterized by comprising

A camera;

the part to be cleaned is arranged on the object side of the camera;

the cleaning device of any one of claims 1-10;

the casing has and holds the cavity, cleaning device and the camera all is located hold the cavity.

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