Motor, camera module and electronic device

Abstract

Provided in the present application are a motor, a camera module and an electronic device. The motor comprises a base, a carrier and a piezoelectric actuator, wherein the carrier is movably connected to the base, the piezoelectric actuator is movably connected to the base and is fixedly connected to the carrier, and the piezoelectric actuator is configured to drive the carrier to move in a first direction relative to the base; the piezoelectric actuator comprises a preload assembly, a resonator and a driven member; the driven member is movably connected to the base and is fixedly connected to the carrier; the resonator is fixedly connected to the preload assembly, the preload assembly is fixed to the base, the preload assembly is configured to press a driving foot of the resonator against the driven member, and the resonator is configured to drive, when being energized, the driven member to drive the carrier to move in the first direction relative to the base; and the driven member has a first connection surface, the carrier has a second connection surface, and the first connection surface is connected to the second connection surface by means of magnetic attraction. The motor can achieve low magnetic interference and a miniaturized design, and has high levels of reliability.

Description

Motors, camera modules and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202411909227.8, filed with the China National Intellectual Property Administration on December 24, 2024, entitled "Motor, Camera Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of shooting equipment technology, and in particular to a motor, camera module and electronic device. Background Technology

[0003] With the development of technology and the demands of the electronic device market, camera modules are increasingly widely used in electronic devices. Camera modules can have various functions, among which the focusing function is gradually becoming a key focus for users. Traditional camera modules include a moving coil motor that drives the lens to move and achieve focusing. However, due to the unreasonable layout of the magnets in the moving coil motor and the high integration of the camera module, other components are susceptible to significant magnetic interference. To reduce the magnetic interference from the magnets to other components, the camera module needs to be larger to make room for avoiding magnetic interference. Therefore, traditional camera modules are relatively large. Summary of the Invention

[0004] This application provides a motor, camera module, and electronic device with low magnetic interference and small size.

[0005] In a first aspect, this application provides a motor. The motor includes a base, a carrier, and a piezoelectric actuator. The carrier is movably connected to the base, and the piezoelectric actuator is movably connected to the base and fixedly connected to the carrier. The piezoelectric actuator is used to drive the carrier to move relative to the base along a first direction. The piezoelectric actuator includes a preload assembly, a resonator, and a follower. The follower is movably connected to the base and fixedly connected to the carrier. The resonator is fixedly connected to the preload assembly, which is fixed to the base. The preload assembly is used to press the driving foot of the resonator onto the follower. When energized, the resonator drives the follower to move the carrier relative to the base along the first direction. The follower has a first connecting surface, and the carrier has a second connecting surface. The first connecting surface and the second connecting surface are magnetically connected.

[0006] Understandably, the preload assembly can be used to provide a preload to the resonator to abut against the driven member, thereby enabling the resonator to abut against the driven member under the action of the preload, which is beneficial for transmitting the macroscopic displacement generated by the micro vibration of the resonator to the driven member.

[0007] It is understood that the first and second connecting surfaces are magnetically connected, enabling the follower and carrier to connect. The piezoelectric actuator can control the carrier to move relative to the base along a first direction, thereby achieving focusing of the camera module. In this embodiment, the carrier can be driven to move using a piezoelectric actuator; therefore, the motor in this embodiment is neither a moving magnet motor nor a moving coil motor. This avoids electromagnetic interference between multiple different magnets. Since it is not necessary to increase the size of the motor to make room for magnetic interference, the problem of a large motor size can be avoided, thus facilitating the miniaturization of the motor in this embodiment.

[0008] In one possible implementation, at least a portion of the first connecting surface and at least a portion of the second connecting surface are either curved surfaces or flat surfaces.

[0009] It is understandable that by setting at least one of the first and second connecting surfaces to be curved and the other to be planar, or by setting at least one of the first and second connecting surfaces to be curved, point contact between the first and second connecting surfaces can be achieved. This decouples the degree of freedom restrictions between the piezoelectric actuator and the carrier. The point contact between the carrier and the driven member only restricts the carrier along the first direction. Thus, when the driven member's position deviates significantly from the base, this deviation is less likely to be transmitted to the carrier through the point contact between the carrier and the driven member. The carrier is less affected by the driven member, and its position is less likely to deviate significantly from the base. This allows the carrier to reciprocate stably relative to the base along the first direction, resulting in higher reliability.

[0010] In one possible implementation, the first connecting surface is an arc surface, and the second connecting surface is a plane.

[0011] It is understandable that by setting the first connecting surface as an arc surface and the second connecting surface as a plane, point contact can be achieved between the first and second connecting surfaces, thereby achieving point contact between the driven member and the carrier. In this way, positional changes of the driven member in directions other than the first direction are not easily transmitted to the carrier, resulting in higher reliability of the carrier.

[0012] In one possible implementation, the first connecting surface includes a plane and an arc surface, the arc surface is connected to the plane, the second connecting surface is a plane, and the arc surface of the first connecting surface is fixedly connected to the second connecting surface.

[0013] It is understandable that by setting part of the first connecting surface to be curved and the second connecting surface to be flat, point contact can be achieved between the first and second connecting surfaces, thereby achieving point contact between the magnetic attractor and the magnetic body, and further achieving point contact between the driven member and the carrier. In this way, positional changes of the driven member in directions other than the first direction are not easily transmitted to the carrier, and the carrier is not easily moved relative to the base in directions other than the first direction, resulting in higher reliability of the carrier.

[0014] In one possible implementation, the carrier includes a carrier body and a magnetic body, the magnetic body being fixedly connected to the carrier body and the carrier body being movably connected to the base; the driven member includes a driven member body and a magnetic accumulator, the magnetic accumulator being fixedly connected to the driven member body and the driven member body being movably connected to the base, the magnetic body and the magnetic accumulator being arranged opposite to each other, the surface of the magnetic accumulator facing the magnetic body being the first connecting surface, and the surface of the magnetic body facing the magnetic accumulator being the second connecting surface.

[0015] Understandably, the carrier and the driven member can be fixedly connected through point contact, which decouples the degree of freedom restrictions between the piezoelectric actuator and the carrier. The point contact between the carrier and the driven member only restricts the carrier along the first direction. Thus, when the driven member's position deviates significantly from the base, this deviation is not easily transmitted to the carrier through the point contact between the carrier and the driven member. The carrier is less affected by the driven member, and its position is less likely to deviate significantly from the base. This allows the carrier to reciprocate stably relative to the base along the first direction, resulting in high reliability.

[0016] In one possible implementation, the carrier body has a first groove, and at least a portion of the magnetic body and at least a portion of the magnetic attractor are located within the first groove.

[0017] It is understandable that by setting at least a portion of the magnet and at least a portion of the magnetic attractor to be located in the first groove, the space of the motor along the second direction can be fully utilized, the space utilization of the motor can be improved, and thus the motor can be miniaturized.

[0018] In one possible implementation, the base encloses a receiving space, and at least a portion of the carrier is located within the receiving space; the driven body includes a first connecting portion and a second connecting portion, the second connecting portion being bent and connected to the first connecting portion and at least partially located on one side of the first connecting portion, and a magnetic accumulator being fixedly connected to the second connecting portion; the first connecting portion is located on the side of the base away from the carrier body and is slidably connected to the base, and a portion of the second connecting portion crosses the base and extends into the receiving space.

[0019] It is understandable that by arranging the first and second connecting parts on both sides of the base, both the movable connection between the driven member and the base and the fixed connection between the driven member and the carrier can be achieved simultaneously. Furthermore, the second connecting part extending into the receiving space saves space in the motor, thus improving the space utilization rate of the motor.

[0020] In one possible implementation, the follower body further includes a first sliding shaft portion and a second sliding shaft portion, the first sliding shaft portion and the second sliding shaft portion protruding from the surface of the first connecting portion facing the second connecting portion; the base includes a first sliding groove and a second sliding groove, at least a portion of the first sliding shaft portion is located in the first sliding groove, and at least a portion of the second sliding shaft portion is located in the second sliding groove.

[0021] Understandably, the driven member can be movably connected to the base via the first sliding shaft portion and the second sliding shaft portion. Both the first and second sliding grooves extend along a first direction, guiding the first and second sliding shaft portions, allowing them to slide along the first direction. Since both the first and second sliding shaft portions are fixedly connected to the second connecting portion, the driven member can be driven to reciprocate relative to the base along the first direction via the first and second sliding shaft portions.

[0022] In one possible implementation, the motor further includes a first support member and a second support member, and the carrier is movably connected to the base through the first support member and the second support member; the carrier body includes a first support groove and a second support groove spaced apart, at least a portion of the first support member is located in the first support groove, and at least a portion of the second support member is located in the second support groove; both the first support groove and the second support groove extend along a first direction, both the first support groove and the second support groove are arranged along a second direction, both the first slide groove and the second slide groove extend along the first direction, and both the first slide groove and the second slide groove are arranged along a third direction, wherein the first direction, the second direction and the third direction are different from each other.

[0023] It is understandable that the extension direction between the first support groove and the second support groove can be approximately parallel to the extension direction between the first slide groove and the second slide groove, so that the carrier and the driven member can move together along the first direction. The arrangement direction between the first support groove and the second support groove can be approximately perpendicular to the arrangement direction between the first slide groove and the second slide groove. The first and second support grooves connecting the carrier and the first and second slide grooves connecting the piezoelectric actuator are independent of each other and are arranged approximately orthogonally, which can ensure the motion stability of the carrier and the driven member.

[0024] In one possible implementation, the first support groove includes a first sidewall and a second sidewall, which are arranged opposite to each other and at an inclination. The distance between the first sidewall and the second sidewall at the opening of the first support groove is greater than the distance between the first sidewall and the second sidewall at the bottom of the groove body of the first support groove. The first support member is in contact with the first sidewall and the second sidewall. The first support groove is closer to the piezoelectric actuator than the second support groove.

[0025] It is understandable that by setting the first support groove on the side close to the piezoelectric actuator, the piezoelectric actuator can be located on the side where the carrier and the first support are tightly fitted. This can improve the stability of the carrier during movement, prevent the carrier from tilting at a large angle, and thus improve the reliability of the carrier.

[0026] In one possible implementation, the cross-section of the first support groove is V-shaped or trapezoidal.

[0027] It is understandable that the first support groove can limit the sliding direction of the first support member, thereby allowing the first support member to slide relative to the extension direction of the first support groove (i.e., the first direction), which can reduce the probability of the first support member deviating, thereby reducing the probability of the carrier deviating when moving along the first direction.

[0028] In one possible implementation, the motor further includes a first magnetic component and a second magnetic component, which are fixedly connected to the carrier; the first support component is made of magnetic material and is arranged opposite to the first magnetic component.

[0029] Understandably, the magnetic force between the first magnetic component and the first support component can attract the carrier to the first support component. In this way, along a third direction, the carrier, through the first magnetic component, can be more tightly connected to the first support component, preventing the carrier from tilting at large angles or detaching during movement, thereby improving the stability and reliability of the carrier during movement. Furthermore, by attracting the carrier to the first support component, the noise generated between the carrier and the first support component is reduced during the carrier's movement relative to the base along the first direction, resulting in a better user experience.

[0030] In one possible implementation, the motor further includes a first magnetic component and a second magnetic component, the first magnetic component and the second magnetic component being fixedly connected to the carrier; the second support component is made of magnetic material, and the second support component and the second magnetic component are arranged opposite to each other.

[0031] Understandably, the magnetic force between the second magnetic component and the second support component can attract the carrier to the second support component. In this way, along the third direction, the carrier, through the second magnetic component, can be more tightly connected to the second support component, preventing the carrier from tilting at large angles or detaching during movement, thereby improving the stability and reliability of the carrier during movement. Furthermore, by attracting the carrier to the second support component, the noise generated by the carrier and the second support component is reduced during the carrier's movement relative to the base along the first direction, resulting in a better user experience.

[0032] In one possible implementation, the surface of the first sliding shaft portion is provided with a first boss and a second boss that are spaced apart, and the first boss and the second boss abut against the first sliding groove; the surface of the second sliding shaft portion is provided with a third boss, and the third boss abuts against the second sliding groove.

[0033] It is understandable that the base and the first sliding shaft part are in contact through the first boss and the second boss, and the base and the second sliding shaft part are in contact through the third boss. The three-point contact method makes the connection between the base and the first sliding shaft part and the second sliding shaft part more stable, improves the stability of the driven member moving relative to the base in the first direction, and thus improves the stability of the carrier moving relative to the base in the first direction.

[0034] In one possible implementation, the cross-sections of the first sliding shaft portion and the second sliding shaft portion are semi-circular.

[0035] Understandably, since the cross-sections of both the first and second sliding shafts can be approximately semi-circular, the noise generated between the first and second sliding shafts and the base is lower during the movement of the follower relative to the base, resulting in a better user experience. Furthermore, compared to sliding shafts with approximately circular cross-sections, the first and second sliding shafts with approximately semi-circular cross-sections occupy less space in the second direction and are less likely to affect their reliability, which is beneficial for miniaturizing piezoelectric actuators and motors.

[0036] In one possible implementation, the first connecting part of the driven member is provided with a friction groove, and the driving foot of the resonator is located in the friction groove and in contact with the groove wall.

[0037] It is understandable that the driving foot of the resonator can rub against the wall of the friction groove, thereby generating a force along the first direction, which in turn drives the driven member to move relative to the resonator along the first direction.

[0038] In one possible implementation, the surface of the driving foot of the resonator is provided with a first wear-resistant layer, the material of which includes nitride.

[0039] Understandably, stainless steel and nitrides have high hardness, and the first wear-resistant layer also has high hardness, which can improve the surface hardness of the drive foot. Thus, during the friction between the drive foot and the driven component, the drive foot is less prone to wear or chipping, resulting in fewer black spots or shadows in the images or videos captured by the camera module, leading to higher image quality.

[0040] In one possible implementation, the friction groove wall is provided with a second wear-resistant layer, the material of which includes nitride.

[0041] Understandably, stainless steel has a high hardness, and the second wear-resistant layer also has a high hardness, which can improve the hardness of the groove wall of the friction groove of the driven part. In this way, during the friction between the driving foot and the driven part, the driven part is less likely to wear or shed chips. As a result, black spots or shadows are less likely to appear in the images or videos captured by the camera module, and the imaging quality of the camera module is higher.

[0042] In one possible implementation, the wall of the friction groove is provided with a ceramic layer, the driving foot of the resonator is in contact with the ceramic layer, and the thickness T of the ceramic layer satisfies: T≥0.05mm.

[0043] Understandably, by setting the thickness T of the ceramic layer to be greater than or equal to 0.05 mm, the ceramic layer is thicker and harder, which can improve the hardness of the groove wall of the friction groove of the driven part. In this way, during the friction between the driving foot and the driven part, the driven part is less likely to wear or shed chips, and black spots or shadows are less likely to appear in the images or videos captured by the camera module, resulting in higher imaging quality of the camera module.

[0044] In one possible implementation, the pre-compression assembly includes a support and a pressure column. The support includes a first end, a middle section, and a second end connected in sequence, and a resonator is fixedly connected to the middle section of the support. The first end of the support is fixedly connected to the base, the pressure column is fixedly connected to the base, and the second end of the support is fixed to the base.

[0045] Understandably, the pressure column fixes the second end of the bracket to the base, and the pressure column can limit the bracket, thereby preventing the spring from undergoing inelastic deformation.

[0046] In one possible implementation, the base is provided with a first limiting groove, and the first end of the bracket is fixedly connected to the first limiting groove.

[0047] Understandably, the base can limit the support in a third direction, making it less likely for the support to detach from the base, thus improving its reliability. When the driven component moves relative to the base, the support can provide a stable preload to the resonator, ensuring that the resonator's drive is sufficiently close to the driven component, making the connection between the resonator and the driven component more reliable.

[0048] In one possible implementation, the base is provided with a second limiting groove, and the second end of the bracket is fixedly connected to the second limiting groove.

[0049] Understandably, the base can limit the support in a third direction, making it less likely for the support to detach from the base, thus improving its reliability. When the driven component moves relative to the base, the support can provide a stable preload to the resonator, ensuring that the resonator's drive is sufficiently close to the driven component, making the connection between the resonator and the driven component more reliable.

[0050] In one possible implementation, the preload assembly further includes a reed, with its first and second ends fixedly connected to the base, and its middle portion fixedly connected to the first end of the bracket.

[0051] Understandably, the spring elastically fixes the first end of the bracket to the base, and the small reverse K value of the spring can avoid large variations in the preload of the spring.

[0052] In one possible implementation, the cross-section of the pressure column is circular, semi-circular, or polygonal.

[0053] Understandably, when the cross-section of the pressure column is circular or semi-circular, the contact between the pressure column and the support is a line contact, which improves the torsional stability of the support. This allows the pre-compression component to provide a pre-force to the driving foot of the resonator, squeezing it towards the driven member. Under this pre-force, the resonator can tightly abut against the driven member, thus ensuring that the macroscopic displacement generated by the micro-vibration of the resonator is transmitted to the driven member. Furthermore, because the contact between the pressure column and the support is a line contact, the support has strong anti-sway capability, thus avoiding output fluctuations and noise caused by support sway, resulting in a better user experience.

[0054] It is understandable that when the cross-section of the pressure column is polygonal, the contact between the pressure column and the support is a surface contact, which can improve the torsional stability of the support. This allows the pre-compression component to provide a pre-pressure force to the driving foot of the resonator, which compresses the driven member. Under the action of the pre-pressure, the resonator can closely abut against the driven member, which is conducive to ensuring that the macroscopic displacement generated by the micro-vibration of the resonator is transmitted to the driven member.

[0055] In one possible implementation, the resonator includes an elastic body, a driving foot, a first piezoelectric ceramic, and a second piezoelectric ceramic. The elastic body is fixedly connected to a preload assembly. The elastic body includes a first surface and a second surface facing away from each other. The first surface faces the driven member. The driving foot is fixedly connected to the first surface. The first piezoelectric ceramic and the second piezoelectric ceramic are fixedly connected to the second surface at intervals.

[0056] Understandably, the preloaded component can fix and support the elastomer. The first and second piezoelectric ceramics can deform when energized, and the elastomer can convert this deformation into macroscopic displacement.

[0057] In one possible implementation, the motor further includes a circuit board assembly, which includes a main circuit board, a position sensor, and a third magnetic component. The third magnetic component is fixedly connected to the carrier. The position sensor is fixedly connected to the main circuit board and electrically connected to the main circuit board. The main circuit board is fixedly connected to the base and is located on the side of the base away from the piezoelectric actuator. The position sensor and the third magnetic component are arranged opposite to each other.

[0058] Understandably, the position sensor can detect changes in the magnetic field of the third magnetic component. The processor can obtain the real-time position of the carrier based on the detection results of the position sensor, thereby enabling precise control of the carrier's displacement and achieving closed-loop control of the carrier, resulting in high reliability of the carrier.

[0059] In one possible implementation, the piezoelectric actuator further includes a first circuit board and a second circuit board. The first circuit board is fixedly connected to and electrically connected to a first piezoelectric ceramic, and the second circuit board is fixedly connected to and electrically connected to a second piezoelectric ceramic. The base includes a base body, a first electrical connection terminal, a second electrical connection terminal, a third electrical connection terminal, a fourth electrical connection terminal, a first trace, and a second trace. The first electrical connection terminal, the second electrical connection terminal, the third electrical connection terminal, and the fourth electrical connection terminal are fixedly connected to the base body at intervals and exposed relative to the base body. The first electrical connection terminal and the second electrical connection terminal are electrically connected to the first circuit board and the second circuit board, respectively. The third electrical connection terminal and the fourth electrical connection terminal are electrically connected to the main circuit board. The first trace and the second trace are embedded in the base body. The first trace is electrically connected to the first electrical connection terminal and the third electrical connection terminal, and the second trace is electrically connected to the second electrical connection terminal and the fourth electrical connection terminal.

[0060] Understandably, piezoelectric actuators can achieve electrical connection through a base and circuit board assembly. Piezoelectric actuators can achieve electrical connection without the need for additional structural components, which helps reduce the number of structural components in the motor and thus facilitates the miniaturization of the motor.

[0061] In one possible implementation, the circuit board assembly further includes electronic components fixedly connected to the main circuit board and located on the side of the main circuit board away from the base; the base has anti-collision protrusions, the height of which is greater than the height of the electronic components.

[0062] Understandably, because the height of the anti-collision protrusion along the second direction is greater than the height of the electronic component along the second direction, the anti-collision protrusion can protect the electronic component. Compared to the electronic component, other components are more likely to collide with the anti-collision protrusion, while the electronic component is less likely to collide with other components, making it less prone to malfunction or damage due to collisions. This results in higher reliability for the electronic component and circuit board assembly.

[0063] In one possible implementation, the motor further includes a first dust-catching adhesive, which is fixedly connected to the driven member and located on the side of the driven member closer to the resonator.

[0064] Understandably, the first dust-catching adhesive can capture the debris generated by the friction between the driving foot and the driven part of the resonator, preventing the debris from falling onto the lens, thereby avoiding black spots or shadows in the images captured by the camera module and thus improving the imaging quality of the camera module.

[0065] In one possible implementation, the base includes a base plate, a first side plate, a second side plate, a third side plate, and a fourth side plate, the first side plate, the second side plate, the third side plate, and the fourth side plate being located on the same side of the base plate and fixedly connected to the base plate; the motor also includes a second dust-collecting adhesive, the second dust-collecting adhesive being fixedly connected to the base plate and located on the side of the base plate closer to the first side plate.

[0066] Understandably, the second dust-catching adhesive can capture the debris generated by the friction between the driving foot and the driven part of the resonator, preventing the debris from falling onto the lens, thereby avoiding black spots or shadows in the images captured by the camera module and thus improving the imaging quality of the camera module.

[0067] In one possible implementation, the motor further includes a housing and a third dust-collecting adhesive, the third dust-collecting adhesive being fixedly connected to the housing; the housing includes a top, a first side, a second side, a third side, and a fourth side, the first side, the second side, the third side, and the fourth side being located on the same side of the top and fixedly connected to the top; the housing is fitted onto the base, and the third dust-collecting adhesive is fixedly connected to the top and located on the side of the top closer to the base.

[0068] Understandably, the third dust-catching adhesive can capture the debris generated by the friction between the driving foot and the driven part of the resonator, preventing the debris from falling onto the lens, thereby avoiding black spots or shadows in the images captured by the camera module and improving the imaging quality of the camera module.

[0069] Secondly, this application provides a camera module. The camera module includes a lens and the aforementioned motor, with the lens fixedly connected to a carrier.

[0070] Understandably, camera modules can be miniaturized and are highly reliable.

[0071] Thirdly, this application provides an electronic device. The electronic device includes a housing and the aforementioned camera module, the camera module being disposed within the housing.

[0072] Understandably, camera modules in electronic devices can be miniaturized and are highly reliable. Attached Figure Description

[0073] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0074] Figure 2 is a partial cross-sectional view of one embodiment of the electronic device shown in Figure 1 at line AA;

[0075] Figure 3 is a partial structural schematic diagram of the focusing component shown in Figure 2 in one embodiment;

[0076] Figure 4 is a partially exploded schematic diagram of the motor shown in Figure 3 in one embodiment;

[0077] Figure 5 is a structural schematic diagram of the base shown in Figure 4 in one embodiment;

[0078] Figure 6 is a structural schematic diagram of the base shown in Figure 5 from another angle;

[0079] Figure 7 is a partially exploded schematic diagram of the base shown in Figure 5 in one embodiment;

[0080] Figure 8 is a structural schematic diagram of the carrier shown in Figure 4 in one embodiment;

[0081] Figure 9 is a structural schematic diagram of the carrier shown in Figure 8 from another angle;

[0082] Figure 10 is a partially exploded schematic diagram of the carrier shown in Figure 8 in one embodiment;

[0083] Figure 11 is a partial cross-sectional schematic diagram of one embodiment of the carrier shown in Figure 8 at the BB line;

[0084] Figure 12 is a partially exploded schematic diagram of the motor shown in Figure 3 in one embodiment;

[0085] Figure 13 is a partial structural schematic diagram of the motor shown in Figure 3 in one embodiment;

[0086] Figure 14 is a partial cross-sectional view of one embodiment of the motor shown in Figure 13 at the CC line;

[0087] Figure 15 is a partially exploded view of the motor shown in Figure 13 from another angle;

[0088] Figure 16 is a partially exploded schematic diagram of one embodiment of the piezoelectric actuator shown in Figure 4;

[0089] Figure 17 is a structural schematic diagram of the follower shown in Figure 16 from another angle;

[0090] Figure 18 is a partially exploded view of the follower shown in Figure 17 in one embodiment;

[0091] Figure 19A is a partially exploded schematic diagram of one embodiment of the motor shown in Figure 3;

[0092] Figure 19B is a partial structural schematic diagram of the motor shown in Figure 3 in one embodiment;

[0093] Figure 20A is a partial cross-sectional view of one embodiment of the motor shown in Figure 19B at the DD line;

[0094] Figure 20B is an enlarged structural schematic diagram of one embodiment of the motor shown in Figure 20A at point E;

[0095] Figure 21 is a partial cross-sectional schematic diagram of one embodiment of the motor shown in Figure 19B at the FF line;

[0096] Figure 22A is a partial cross-sectional view of another embodiment of the motor shown in Figure 19B at the DD line;

[0097] Figure 22B is an enlarged schematic diagram of one embodiment of the motor shown in Figure 22A at point G;

[0098] Figure 23 is a schematic diagram of the structure of the harmonic oscillator shown in Figure 16 in one embodiment;

[0099] Figure 24 is a partially exploded schematic diagram of one embodiment of the harmonic oscillator shown in Figure 23;

[0100] Figure 25 is a partial structural schematic diagram of the pre-compression assembly shown in Figure 16 in one embodiment;

[0101] Figure 26 is a partially exploded view of the pre-compression assembly shown in Figure 25 in one embodiment;

[0102] Figure 27 is a partial structural schematic diagram of the piezoelectric actuator shown in Figure 4 in one embodiment;

[0103] Figure 28 is a partial structural schematic diagram of one embodiment of the piezoelectric actuator shown in Figure 4;

[0104] Figure 29 is a partially exploded schematic diagram of one embodiment of the motor shown in Figure 3;

[0105] Figure 30 is a partial exploded view of the motor shown in Figure 3 in one embodiment;

[0106] Figure 31 is a partial structural schematic diagram of the motor shown in Figure 3 in one embodiment;

[0107] Figure 32 is a partial cross-sectional view of one embodiment of the motor shown in Figure 31 at line HH;

[0108] Figure 33A is a partial cross-sectional schematic diagram of one embodiment of the piezoelectric actuator shown in Figure 4 at line II.

[0109] Figure 33B is an enlarged schematic diagram of one embodiment of the piezoelectric actuator shown in Figure 33A at point J;

[0110] Figure 34A is a partial cross-sectional schematic diagram of another embodiment of the piezoelectric actuator shown in Figure 4 at line II;

[0111] Figure 34B is an enlarged schematic diagram of one embodiment of the piezoelectric actuator shown in Figure 34A at point K;

[0112] Figure 35 is a partial cross-sectional view of one embodiment of the motor shown in Figure 31 at line LL.

[0113] Figure 36 is a partial cross-sectional view of one embodiment of the motor shown in Figure 31 at the MM line;

[0114] Figure 37 is a partial cross-sectional view of another embodiment of the motor shown in Figure 31 at the MM line;

[0115] Figure 38 is a structural schematic diagram of the motor shown in Figure 31 from another angle;

[0116] Figure 39 is a partially exploded view of the motor shown in Figure 38 in one embodiment;

[0117] Figure 40 is a partial structural schematic diagram of the circuit board assembly shown in Figure 4 from another angle;

[0118] Figure 41 is a partial structural schematic diagram of the circuit board assembly shown in Figure 40 from another angle;

[0119] Figure 42 is a partial structural schematic diagram of the motor shown in Figure 3 in one embodiment;

[0120] Figure 43 is a partial cross-sectional schematic diagram of one embodiment of the motor shown in Figure 42 at line NN;

[0121] Figure 44 is a partial structural schematic diagram of the motor shown in Figure 4 in one embodiment;

[0122] Figure 45A is a partial cross-sectional view of one embodiment of the motor shown in Figure 3 at the OO line;

[0123] Figure 45B is an enlarged structural schematic diagram of one embodiment of the motor shown in Figure 45A at point P;

[0124] Figure 46 is a partial structural schematic diagram of the outer casing shown in Figure 4 in one embodiment;

[0125] Figure 47 is a partial structural diagram of the motor shown in Figure 3 from another angle;

[0126] Figure 48A is a partial cross-sectional view of one embodiment of the motor shown in Figure 3 at the QQ line.

[0127] Figure 48B is an enlarged schematic diagram of one embodiment of the motor shown in Figure 48A at point R. Detailed Implementation

[0128] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0129] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," "joining," and "joining" should be interpreted broadly. For example, "joining" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Movable connection" refers to a connection where relative movement is possible after connection. "Sliding connection" refers to a connection where relative sliding is possible after connection. Furthermore, the integrated structure obtained by a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component without requiring further processing (such as bonding, welding, snap-fit ​​connection, or screw connection) to join the two components. Components A and B can be arranged relative to each other, with component A projected along the target direction to obtain projection C, and component B projected along the target direction to obtain projection D, where projection C and projection D can at least largely overlap. In some embodiments, the majority overlap can be either: projection C is completely within projection D, or projection D is completely within projection C. Alternatively, projection C and projection D intersect each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0130] The directional terms mentioned in the embodiments of this application, such as "top," "bottom," "inner," and "outer," are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0131] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. "Multiple" means at least two.

[0132] Furthermore, the limitations on relative positional relationships mentioned in the embodiments of this application, such as parallelism and perpendicularity, are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0133] Figure 1 is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of this application.

[0134] As shown in Figure 1, the electronic device 1000 can be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), camera, personal computer, laptop computer, in-vehicle equipment, wearable device, augmented reality (AR) glasses, AR helmet, virtual reality (VR) glasses, or VR helmet, etc., that has a camera module.

[0135] It is understood that, for ease of description, the electronic device 1000 is defined in the following text as having a first direction X, a second direction Y, and a third direction Z, which are different from each other. For example, the first direction X can be the width direction of the electronic device 1000, the second direction Y can be the height direction of the electronic device 1000, the first direction X can be approximately perpendicular to the second direction Y, and the third direction Z can be the thickness direction of the electronic device 1000. The third direction Z can be approximately perpendicular to the first direction X and the second direction Y. In other embodiments, the coordinate system of the electronic device 1000 can be flexibly set according to specific actual needs.

[0136] Figure 2 is a partial cross-sectional view of one embodiment of the electronic device 1000 shown in Figure 1 at line AA.

[0137] As shown in Figures 1 and 2, in some embodiments, the electronic device 1000 may include a camera module 100, a housing 200, and a screen 300. The camera module 100 may be a rear-facing camera module or a front-facing camera module. It is understood that Figures 1, 2, and the related figures below only schematically illustrate some components included in the electronic device 1000; the actual shape, size, location, and construction of these components are not limited by Figures 1, 2, and the figures below. Furthermore, the electronic device 1000 may include more or fewer structures. For example, when the electronic device 1000 includes more structures, it may also include a heat spreader (not shown). When the electronic device 1000 includes fewer structures, it may not include a screen.

[0138] As shown in Figures 1 and 2, in some embodiments, the screen 300 is mounted on the housing 200, and together with the housing 200, encloses the interior of the electronic device 1000. The interior of the electronic device 1000 can be used to house components of the electronic device 1000, such as a battery, receiver, or microphone. The screen 300 can be a flat screen or a curved screen.

[0139] For example, the camera module 100 can be disposed within the housing 200. The housing 200 has a light-transmitting portion 201. The shape of the light-transmitting portion 201 is not limited to the circle shown in Figure 1, but can also be elliptical or irregular in shape. Light from outside the electronic device 1000 can enter the interior of the electronic device 1000 through the light-transmitting portion 201. The camera module 100 can collect the light entering the interior of the electronic device 1000. The light-transmitting portion 201 can be a light-transmitting hole or a transparent part in the housing 200. This application does not specifically limit the specific structure of the light-transmitting portion 201.

[0140] As shown in Figure 2, by way of example, the camera module 100 includes a first folding element 10, a focusing assembly 20, a second folding element 30, and an image sensor 40 arranged sequentially from the object side to the image side. In other embodiments, the camera module 100 may include more or fewer structures. For example, when the camera module 100 includes more structures, it may also include a filter (not shown). When the camera module 100 includes fewer structures, it may not include the second folding element 30.

[0141] For example, the image sensor 40 is a semiconductor chip, also known as a photosensitive chip. The surface of the image sensor 40 contains hundreds of thousands to millions of photodiodes, which generate electrical charges when illuminated. The image sensor 40 utilizes the photoelectric conversion function of optoelectronic devices to convert the light image on its photosensitive surface into an electrical signal proportional to the light image. The photosensitive surface of the image sensor 40 can be positioned facing the second folding element 30. The image sensor 40 can be a charge-coupled device, a complementary metal-oxide-semiconductor, a phototransistor, or a thin-film transistor, etc. In other embodiments, the image sensor 40 can also be a component with other structures.

[0142] For example, the image sensor 40 can be located on the image side of the focusing assembly 20. Light can pass sequentially through the first deflection element 10, the focusing assembly 20, and the second deflection element 30 before reaching the image sensor 40, thereby achieving image formation.

[0143] Figure 3 is a partial structural schematic diagram of the focusing component 20 shown in Figure 2 in one embodiment.

[0144] As shown in Figures 2 and 3, the focusing assembly 20 may, exemplarily, include a motor 1 and a lens (not shown), with the lens mounted on the motor 1. The motor 1 can drive the lens to move along a first direction X to achieve auto focus (AF) of the camera module 100, thereby improving the imaging quality of the camera module 100.

[0145] Figure 4 is a partially exploded schematic diagram of the motor 1 shown in Figure 3 in one embodiment.

[0146] As shown in Figures 3 and 4, exemplarily, motor 1 may include a base 11, a carrier 12, a first magnetic element 131, a second magnetic element 132, a first support 141, a second support 142, a piezoelectric actuator 15, a circuit board assembly 16, and a housing 17. It is understood that Figure 4 only schematically shows some of the components included in motor 1, and the actual shape, size, location, and construction of these components are not limited to those shown in Figure 4. Motor 1 may include more or fewer structures; for example, when motor 1 includes fewer structures, motor 1 may not include housing 17.

[0147] Figure 5 is a structural schematic diagram of the base 11 shown in Figure 4 in one embodiment. Figure 6 is a structural schematic diagram of the base 11 shown in Figure 5 from another angle. Figure 7 is a partially exploded schematic diagram of the base 11 shown in Figure 5 in one embodiment.

[0148] As shown in Figures 5 to 7, exemplarily, the base 11 may include a base body 111, a first electrical connection terminal 1121, a second electrical connection terminal 1122, a third electrical connection terminal 1123, a fourth electrical connection terminal 1124, a first trace 1131, and a second trace 1132. It is understood that Figure 5 and the related figures below only schematically show some components included in the base 11, and the actual shape, size, location, and construction of these components are not limited to Figure 5 and the figures below. Furthermore, the base 11 may include more or fewer structures.

[0149] For example, the first electrical connection terminal 1121, the second electrical connection terminal 1122, the third electrical connection terminal 1123 and the fourth electrical connection terminal 1124 can be fixedly connected to the base body 111 at intervals and exposed relative to the base body 111.

[0150] For example, the first trace 1131 and the second trace 1132 can be embedded in the base body 111. The first trace 1131 can be electrically connected to the first electrical connection terminal 1121 and the third electrical connection terminal 1123, and the second trace 1132 can be electrically connected to the second electrical connection terminal 1122 and the fourth electrical connection terminal 1124.

[0151] As shown in Figures 5 to 7, for example, the base body 111 may include a base plate 1111, a first side plate 1112, a second side plate 1113, a third side plate 1114, and a fourth side plate 1115.

[0152] For example, the first side plate 1112, the second side plate 1113, the third side plate 1114, and the fourth side plate 1115 can be located on the same side of the base plate 1111 and fixedly connected to the base plate 1111. The base plate 1111, the first side plate 1112, the second side plate 1113, the third side plate 1114, and the fourth side plate 1115 of the base body 111 can enclose the receiving space 114 of the base 11.

[0153] For example, the first side plate 1112 and the third side plate 1114 can be arranged opposite to each other and spaced apart, and the first side plate 1112 and the third side plate 1114 can be arranged along the second direction Y. The second side plate 1113 can be connected between the first side plate 1112 and the third side plate 1114. The second side plate 1113 and the fourth side plate 1115 can be arranged opposite to each other and spaced apart, and the second side plate 1113 and the fourth side plate 1115 can be arranged along the first direction X. In other embodiments, the base body 111 can also adopt other structures.

[0154] It is understood that, for ease of describing the specific structure and shape of the base body 111, this embodiment describes the base body 111 in five parts. However, this does not affect the fact that the base body 111 can be a one-piece molded structure, that is, the base plate 1111, the first side plate 1112, the second side plate 1113, the third side plate 1114, and the fourth side plate 1115 can be integrally molded. In other embodiments, the base body 111 can also be formed by different independent structural components through an assembly process. For example, the first side plate 1112, the second side plate 1113, the third side plate 1114, and the fourth side plate 1115 of the base body 111 can be independent structural components and are fixedly connected to the base plate 1111 by means of adhesive bonding, welding, etc.

[0155] As shown in FIG5, for example, the base 11 may include a first groove 1151 and a second groove 1152.

[0156] For example, the first slide groove 1151 and the second slide groove 1152 may be located on the first side plate 1112. The openings of the first slide groove 1151 and the second slide groove 1152 may both be arranged facing away from the third side plate 1114.

[0157] For example, the cross-section of the first groove 1151 can be approximately "V" shaped; in other words, the first groove 1151 can be a V-shaped groove, and the cross-section of the first groove 1151 can be approximately perpendicular to the first direction X. The second groove 1152 can be approximately flat.

[0158] In this embodiment, the V-groove refers to a groove in which two opposing sidewalls are inclined. Furthermore, the distance between the two opposing sidewalls is larger at the groove opening and smaller at the bottom, making the groove's cross-section approximately "V"-shaped or trapezoidal. The above is merely an example of a V-groove and does not constitute a limitation on its structure. As long as the V-groove's two sidewalls are inclined and the distance between the two sidewalls at the groove opening is greater than the distance between the two sidewalls at the bottom, it is acceptable.

[0159] In other embodiments, the cross-section of the first groove 1151 may also be of other shapes, and the first groove 1151 may also be of other types. The cross-section of the second groove 1152 may also be of other shapes, and the second groove 1152 may also be of other types. Specifically, this application does not limit the specifics.

[0160] For example, the first groove 1151 and the second groove 1152 may extend along a first direction X. The first groove 1151 and the second groove 1152 may be arranged along a third direction Z. Wherein, the first groove 1151 and the second groove 1152 extending along the first direction X means that the maximum size of the first groove 1151 and the maximum size of the second groove 1152, for example, the length direction of the first groove 1151 and the second groove 1152 may be approximately parallel to the first direction X.

[0161] As shown in Figure 5, for example, the base 11 may be provided with a first limiting groove 116 and a second limiting groove 117.

[0162] For example, the first limiting groove 116 may be located at one end of the fourth side plate 1115 near the first side plate 1112, and the opening of the first limiting groove 116 may be set away from the third side plate 1114. The second limiting groove 117 may be located at one end of the second side plate 1113 near the first side plate 1112, and the opening of the second limiting groove 117 may be set away from the third side plate 1114.

[0163] As shown in Figure 6, the base 11 may, by way of example, have a bumper protrusion 118. In one embodiment, the bumper protrusion 118 may be located on the third side plate 1114. The bumper protrusion 118 may protrude in a direction away from the third side plate 1114 relative to the surface of the third side plate 1114 in the second direction Y.

[0164] For example, the number of anti-collision protrusions 118 can be multiple. In one embodiment, the number of anti-collision protrusions 118 can be two.

[0165] In other embodiments, the number of anti-collision protrusions 118 may also be one. This application does not specifically limit the number of protrusions.

[0166] As shown in Figures 5 and 6, by way of example, the second side plate 1113 may be provided with a first through hole 119a and a second through hole 119b.

[0167] For example, the first through hole 119a and the second through hole 119b can penetrate the second side plate 1113 in the first direction X. The first through hole 119a and the second through hole 119b can be spaced apart. The first through hole 119a can be located on the side of the second through hole 119b closer to the first side plate 1112.

[0168] As shown in Figures 5 and 6, by way of example, the third side plate 1114 may be provided with a third through hole 111a and a fourth through hole 111b. The third through hole 111a and the fourth through hole 111b may penetrate the third side plate 1114 in the second direction Y.

[0169] Figure 8 is a structural schematic diagram of the carrier 12 shown in Figure 4 in one embodiment. Figure 9 is a structural schematic diagram of the carrier 12 shown in Figure 8 from another angle. Figure 10 is a partially exploded schematic diagram of the carrier 12 shown in Figure 8 in one embodiment.

[0170] As shown in Figures 8 to 10, by way of example, the carrier 12 may include a carrier body 121 and a magnetic body 122. The magnetic body 122 may be fixedly connected to the carrier body 121.

[0171] For example, the carrier body 121 may include a first part 1211, a second part 1212, and a third part 1213.

[0172] Exemplarily, the first portion 1211 and the second portion 1212 may be located on the same side of the third portion 1213 and fixedly connected to the third portion 1213. The first portion 1211 and the second portion 1212 may be arranged opposite each other and spaced apart. The first portion 1211 and the second portion 1212 may be arranged along a second direction Y. The third portion 1213 may be located on the same side of the first portion 1211 and the second portion 1212 and connected between the first portion 1211 and the second portion 1212. In other embodiments, the carrier body 121 may also adopt other structures.

[0173] It is understood that, for ease of describing the specific structure and shape of the carrier body 121, this embodiment describes the carrier body 121 in three parts. However, this does not affect the fact that the carrier body 121 can be a one-piece molded structure, that is, the first part 1211, the second part 1212, and the third part 1213 can be integrally molded. In other embodiments, the carrier body 121 can also be formed by different independent structural components through an assembly process. For example, the first part 1211 and the second part 1212 of the carrier body 121 can be two independent structural components, and are fixedly connected to the third part 1213 by means of adhesive bonding, welding, etc.

[0174] As shown in Figures 8 and 10, by way of example, the carrier body 121 may be provided with a first groove 123. The first groove 123 may be located in the first portion 1211.

[0175] For example, at least a portion of the magnetic body 122 may be located within the first groove 123 and fixedly connected to the groove wall of the first groove 123.

[0176] As shown in Figures 8 to 10, for example, the carrier body 121 may include a first support groove 125 and a second support groove 126 that are spaced apart.

[0177] For example, the first support groove 125 may be located in the first portion 1211. The opening of the first support groove 125 may face away from the first recess 123. The cross-section of the first support groove 125 may be generally "V" shaped; in other words, the first support groove 125 may be a V-shaped groove.

[0178] For example, the first support groove 125 includes a first sidewall 1251 and a second sidewall 1252. In one embodiment, the first sidewall 1251 and the second sidewall 1252 are disposed opposite to each other and inclined, and the distance between the first sidewall 1251 and the second sidewall 1252 at the opening of the first support groove 125 is greater than the distance between the first sidewall 1251 and the second sidewall 1252 at the bottom of the groove of the first support groove 125.

[0179] In one embodiment, the cross-section of the first support groove 125 may be approximately trapezoidal.

[0180] In other embodiments, the cross-section of the first support groove 125 may also be substantially other shapes; for example, the cross-section of the first support groove 125 may also be substantially quadrilateral. This application does not specifically limit the form.

[0181] For example, the second support groove 126 may be located in the second portion 1212. The opening of the second support groove 126 may face away from the first groove 123. The cross-section of the second support groove 126 may be generally "L" shaped.

[0182] For example, the first support groove 125 and the second support groove 126 may extend along a first direction X. The first support groove 125 and the second support groove 126 may be arranged along a second direction Y. Wherein, the first support groove 125 and the second support groove 126 extending along the first direction X means that the maximum size of the first support groove 125 and the maximum size of the second support groove 126, for example, the length direction of the first support groove 125 and the second support groove 126 may be approximately parallel to the first direction X.

[0183] For example, the magnetic body 122 can be a magnet or other magnetic component. The magnetic body 122 can be magnetic.

[0184] Figure 11 is a partial cross-sectional view of one embodiment of the carrier 12 shown in Figure 8 at line BB.

[0185] As shown in Figures 9 and 11, the first part 1211 may be provided with a first mounting slot 1271. The second part 1212 may be provided with a second mounting slot 1272.

[0186] For example, the first mounting groove 1271 may be located on the side of the first support groove 125 near the first recess 123. The first mounting groove 1271 may communicate with the first support groove 125. The second mounting groove 1272 may be located on the side of the second support groove 126 near the first recess 123. The opening of the second mounting groove 1272 may be disposed away from the first portion 1211.

[0187] As shown in Figure 9, by way of example, the second part 1212 may be provided with a third mounting groove 1273. The opening of the third mounting groove 1273 may be positioned opposite to the first part 1211.

[0188] Figure 12 is a partially exploded view of the motor 1 shown in Figure 3 in one embodiment (second). Figure 13 is a partially structural schematic diagram of the motor 1 shown in Figure 3 in one embodiment (first). Figure 14 is a partially cross-sectional view of the motor 1 shown in Figure 13 at the CC line in one embodiment.

[0189] As shown in Figures 12 to 14, the carrier 12 can be movably connected to the base 11, and at least a portion of the carrier 12 can be located within the receiving space 114 of the base 11.

[0190] As shown in FIG13, by way of example, the carrier body 121 can be movably connected to the base 11. In one embodiment, the first part 1211 of the carrier body 121 can be disposed opposite to the first side plate 1112 of the base 11, the second part 1212 can be disposed opposite to the third side plate 1114, and the third part 1213 can be disposed opposite to the fourth side plate 1115.

[0191] As shown in Figure 14, by way of example, the carrier 12 can be movably connected to the base 11 through the first support member 141 and the second support member 142.

[0192] Exemplarily, the first support member 141 can be fixedly connected to the base 11. At least a portion of the first support member 141 can be located within the first through hole 119a (see Figure 6). The first support member 141 can be fixedly connected to the wall of the first through hole 119a by means of adhesive or the like. The first support member 141 can be movably connected to the carrier 12. At least a portion of the first support member 141 can be located within the first support groove 125, and the first support member 141 can abut against the first support groove 125. The first support member 141 can abut against the first side wall 1251 and the second side wall 1252. The first support member 141 and the carrier 12 can be independent of each other.

[0193] For example, the cross-section of the first support groove 125 is approximately "V" shaped, and the first support member 141 abuts against both side walls of the first support groove 125. In other words, the first support member 141 and the two side walls of the first support groove 125 are in a zero-fit state.

[0194] It is understood that the first support groove 125 can limit the sliding direction of the first support member 141, thereby allowing the first support member 141 to slide relative to the extension direction of the first support groove 125 (i.e., the first direction X), which can reduce the probability of the first support member 141 deviating, thereby reducing the probability of the carrier 12 deviating when moving along the first direction X.

[0195] Exemplarily, the second support member 142 can be fixedly connected to the base 11, and at least a portion of the second support member 142 can be located within the second through hole 119b. The second support member 142 can be fixedly connected to the wall of the second through hole 119b by means of adhesive or the like. The second support member 142 can be movably connected to the carrier 12. At least a portion of the second support member 142 can be located within the second support groove 126, and the second support member 142 can abut against the second support groove 126. The second support member 142 and the carrier 12 can be loosely fitted.

[0196] It is understandable that there is a certain amount of space between the second support member 142 and the second support groove 126, which can reduce the possibility of interference and thus avoid the phenomenon of jamming when the carrier 12 moves along the first direction X.

[0197] Understandably, the carrier 12 is movably connected to the base 11 via the first support member 141 and the second support member 142. The first support groove 125 and the second support groove 126 can limit the movement direction of the carrier 12, thereby allowing the carrier 12 to move along the extension direction of the first support member 141 and the second support member 142, i.e., the first direction X, reducing the probability of the carrier 12 shifting position during movement. Furthermore, the frictional forces between the carrier 12 and the first support member 141, and between the carrier 12 and the second support member 142, are relatively small, requiring less power from the carrier 12, and resulting in smoother relative movement between the carrier 12 and the base 11.

[0198] In other embodiments, the carrier 12 may also be movably connected to the base 11 in other ways. This application does not specifically limit the details.

[0199] As shown in Figure 14, by way of example, the first magnetic element 131 can be fixedly connected to the carrier 12. In one embodiment, the first magnetic element 131 can be located within the first mounting groove 1271. The first magnetic element 131 can be disposed opposite to the first support member 141.

[0200] For example, the first support member 141 may be made of a magnetic material. The magnetic material can be a material capable of generating a magnetic attraction with a magnet or other magnetic components, such as a ferromagnetic material. It is understood that when the term "magnetic material" appears again in the following text, it has the same meaning and will not be described further.

[0201] For example, the first magnetic element 131 and the first support element 141 may have a magnetic force that is approximately perpendicular to the length direction (i.e., the third direction Z) of the first support element 141, and the first magnetic element 131 and the first support element 141 may attract each other.

[0202] As shown in Figure 14, by way of example, the second magnetic element 132 can be fixedly connected to the carrier 12.

[0203] For example, the second magnetic element 132 may be located within the second mounting groove 1272. The second magnetic element 132 may be disposed opposite to the second support element 142.

[0204] For example, the second support member 142 may be made of a magnetic material.

[0205] For example, the second magnetic element 132 and the second support element 142 may have a magnetic force that is approximately perpendicular to the length direction (i.e., the third direction Z) of the first support element 141, and the second magnetic element 132 and the second support element 142 may attract each other.

[0206] Understandably, the magnetic force between the first magnetic component 131 and the first support component 141, and the magnetic force between the second magnetic component 132 and the second support component 142, can attract the carrier 12 to the first support component 141 and the second support component 142. Thus, along the third direction Z, the carrier 12, through the first magnetic component 131 and the second magnetic component 132, can be more tightly connected to the first support component 141 and the second support component 142, preventing the carrier 12 from tilting at a large angle or detaching during movement, thereby improving the stability and reliability of the carrier 12 during movement. Furthermore, by attracting the carrier 12 to the first support component 141 and the second support component 142, the noise generated by the carrier 12 and the first support component 141 and the second support component 142 is reduced during the movement of the carrier 12 relative to the base 11 along the first direction X, resulting in a better user experience.

[0207] Figure 15 is a partially exploded view of motor 1 shown in Figure 13 from another angle.

[0208] Referring to Figure 15 and in conjunction with Figure 14, exemplarily, the groove wall of the first support groove 125 may be provided with a first protrusion 1253 and a second protrusion 1254 spaced apart. The first support member 141 may abut against the first protrusion 1253 and the second protrusion 1254.

[0209] For example, the groove wall of the second support groove 126 may be provided with a third protrusion 1261. The second support member 142 may abut against the third protrusion 1261.

[0210] It is understood that the carrier 12 and the first support member 141 are in contact through the first protrusion 1253 and the second protrusion 1254, and the carrier 12 and the second support member 142 are in contact through the third protrusion 1261. This three-point contact method makes the connection between the carrier 12 and the first support member 141 and the second support member 142 more stable, improving the stability of the carrier 12 relative to the base 11 along the first direction X, thereby contributing to improved imaging quality of the camera module 100.

[0211] Figure 16 is a partially exploded view of the piezoelectric actuator 15 shown in Figure 4 in one embodiment.

[0212] As shown in Figure 16, exemplarily, the piezoelectric actuator 15 may include a preload assembly 151, a resonator 152, a follower 153, a first circuit board 154, and a second circuit board 155. It is understood that Figure 16 and the following figures only schematically illustrate some of the components included in the piezoelectric actuator 15, and the actual shape, size, location, and construction of these components are not limited to Figure 16 and the following figures. For example, the piezoelectric actuator 15 may include more or fewer structures.

[0213] Figure 17 is a structural schematic diagram of the follower 153 shown in Figure 16 from another angle. Figure 18 is a partially exploded schematic diagram of the follower 153 shown in Figure 17 in one embodiment.

[0214] As shown in Figures 17 and 18, by way of example, the follower 153 may include a follower body 1531 and a magnetic accumulator 1532. The magnetic accumulator 1532 may be fixedly connected to the follower body 1531. The material of the follower body 1531 may include stainless steel.

[0215] In other embodiments, the material of the follower body 1531 may also include other materials. This application does not specifically limit the application.

[0216] For example, the follower body 1531 may include a first connecting portion 1533 and a second connecting portion 1534.

[0217] For example, the second connecting portion 1534 may be bent and connected to the first connecting portion 1533, and at least part of it may be located on one side of the first connecting portion 1533.

[0218] It is understood that, for ease of description of the specific structure and shape of the follower body 1531, this embodiment describes the follower body 1531 in two parts. However, this does not affect the fact that the follower body 1531 can be a one-piece molded structure, that is, the first connecting part 1533 and the second connecting part 1534 can be integrally molded. In other embodiments, the follower body 1531 can also be formed by different independent structural components through an assembly process. For example, the first connecting part 1533 and the second connecting part 1534 of the follower body 1531 can be two independent structural components, and are fixedly connected by means of adhesive bonding, welding, etc.

[0219] For example, the magnetic accumulator 1532 may be made of a magnetic material.

[0220] As shown in FIG17, by way of example, the magnetic accumulator 1532 can be fixedly connected to the second connecting portion 1534 of the driven body 1531. In one embodiment, the magnetic accumulator 1532 can be fixedly connected to the second connecting portion 1534 by means of adhesive or the like.

[0221] In other embodiments, the magnetic accumulator 1532 may also be fixedly connected to the second connecting portion 1534 in other ways. This application does not specifically limit the details.

[0222] For example, the follower 153 may have a first connecting surface 153a. In one embodiment, the first connecting surface 153a may be located on the surface of the magnetic accumulator 1532.

[0223] As shown in Figures 17 and 18, by way of example, the follower body 1531 may also include a first sliding shaft portion 1535 and a second sliding shaft portion 1536.

[0224] For example, the first sliding shaft portion 1535 and the second sliding shaft portion 1536 may protrude from the surface of the first connecting portion 1533 facing the second connecting portion 1534 and be fixedly connected to the first connecting portion 1533.

[0225] For example, the first sliding shaft portion 1535 and the second sliding shaft portion 1536 can be two independent structural components, which are fixedly connected to the first connecting portion 1533 by means of adhesive bonding, welding or other methods.

[0226] In other embodiments, the first sliding shaft portion 1535, the second sliding shaft portion 1536, and the first connecting portion 1533 may also be integrally formed. This application does not specifically limit the details.

[0227] For example, the cross-sections of the first sliding shaft portion 1535 and the second sliding shaft portion 1536 can both be approximately semi-circular.

[0228] Understandably, compared to a sliding shaft with a roughly circular cross-section, the first sliding shaft portion 1535 and the second sliding shaft portion 1536, with a roughly semi-circular cross-section, occupy less space in the second direction Y, and are less likely to affect the reliability of the first sliding shaft portion 1535 and the second sliding shaft portion 1536, which is beneficial to achieving miniaturization of the piezoelectric actuator 15 and the motor 1.

[0229] As shown in Figures 17 and 18, by way of example, the surface of the first sliding shaft portion 1535 may be provided with a first boss 1537 and a second boss 1538 that are spaced apart. The surface of the second sliding shaft portion 1536 may be provided with a third boss 1539.

[0230] Please refer to Figure 17 and, in conjunction with Figure 16, for example, the first connecting portion 1533 may be provided with a friction groove 153b.

[0231] For example, the friction groove 153b may be located on the side of the first connecting portion 1533 away from the second connecting portion 1534. The friction groove 153b may extend along the first direction X. Here, "the friction groove 153b may extend along the first direction X" refers to the maximum dimension of the friction groove 153b, for example, the length direction of the friction groove 153b may be approximately parallel to the first direction X.

[0232] Figure 19A is a partially exploded view of the motor 1 shown in Figure 3 in one embodiment. Figure 19B is a partially structural view of the motor 1 shown in Figure 3 in one embodiment. Figure 20A is a partially cross-sectional view of the motor 1 shown in Figure 19B at line DD in one embodiment.

[0233] As shown in Figures 19A, 19B, and 20A, exemplarily, the follower 153 can be fixedly connected to the carrier 12. The follower 153 can be movably connected to the base 11. It is understood that the follower 153 can be moved closer to the base 11 along the Y-axis direction, thereby being movably connected to the base 11.

[0234] For example, the driven body 1531 can be movably connected to the base 11. The first connecting portion 1533 can be located on the side of the base 11 away from the carrier body 121 and slidably connected to the base 11. A portion of the second connecting portion 1534 can cross the base 11 and extend into the receiving space 114 of the base 11.

[0235] Figure 20B is an enlarged schematic diagram of one embodiment of the motor 1 shown in Figure 20A at point E.

[0236] As shown in Figures 19A to 20B, exemplarily, at least a portion of the magnetic accumulator 1532 may be located within the first groove 123. The magnetic body 122 and the magnetic accumulator 1532 may be disposed opposite to each other, and the magnetic body 122 and the magnetic accumulator 1532 may be fixedly connected.

[0237] It is understood that by providing the first connecting portion 1533 and the second connecting portion 1534 on both sides of the base 11, both the movable connection between the driven member 153 and the base 11 and the fixed connection between the driven member 153 and the carrier can be achieved simultaneously. In addition, the second connecting portion 1534 extends into the receiving space 114, which can save space in the motor 1 and improve the space utilization of the motor 1.

[0238] It is understood that by setting at least a portion of the magnetic body 122 and at least a portion of the magnetic attractor 1532 to be located within the first groove 123, the space of the motor 1 along the second direction Y can be fully utilized, the space utilization of the motor 1 can be improved, and thus the motor 1 can be miniaturized.

[0239] In other embodiments, the positions of the magnetic body 122 and the magnetic attractor 1532 can be interchanged; in other words, the follower 153 may include a magnetic body, and the carrier 12 may include a magnetic attractor. This application does not specifically limit the details.

[0240] As shown in FIG20B, by way of example, the follower 153 may have a first connecting surface 153a. In one embodiment, the surface of the magnetic accumulator 1532 facing the magnetic body 122 may be the first connecting surface 153a.

[0241] As shown in FIG20B, by way of example, the carrier 12 may have a second connecting surface 12a. In one embodiment, the surface of the magnetic body 122 facing the magnetic attractor 1532 may be the second connecting surface 12a.

[0242] As shown in Figures 20A and 20B, exemplarily, the first connecting surface 153a and the second connecting surface 12a can be magnetically connected. The first connecting surface 153a and the second connecting surface 12a can be fixedly connected through point contact; in other words, the driven member 153 and the carrier 12 can be fixedly connected through point contact. However, in actual products, if the driven member 153 or the carrier 12 undergoes a certain degree of deformation or misalignment at the point contact location, resulting in a small area of ​​contact, this is also assumed to be considered as a fixed connection between the two through point contact.

[0243] Understandably, the first connecting surface 153a and the second connecting surface 12a achieve magnetic attraction through point contact, which decouples the degree of freedom restriction between the piezoelectric actuator 15 and the carrier 12. The point contact between the carrier 12 and the follower 153 only restricts the carrier 12 along the first direction X. In this way, when the position of the follower 153 deviates at a large angle relative to the base 11, this deviation is not easily transmitted to the carrier 12 through the point contact between the carrier 12 and the follower 153. The carrier 12 is not easily affected by the follower 153, and the position of the carrier 12 is not easily deviated at a large angle relative to the base 11. This allows the carrier 12 to reciprocate stably relative to the base 11 along the first direction X, resulting in high reliability of the carrier 12.

[0244] As shown in Figures 20A and 20B, exemplarily, at least a portion of the first connecting surface 153a and at least a portion of the second connecting surface 12a may be a curved surface, and the other may be a plane. In one embodiment, at least a portion of the first connecting surface 153a may be a curved surface, and at least a portion of the second connecting surface 12a may be a plane. In another embodiment, at least a portion of the first connecting surface 153a may be a plane, and at least a portion of the second connecting surface 12a may be a curved surface.

[0245] It is understandable that by setting at least a portion of the first connecting surface 153a and at least a portion of the second connecting surface 12a to be a curved surface and the other to be a plane, point contact between the first connecting surface 153a and the second connecting surface 12a can be achieved, thereby achieving point contact between the driven member 153 and the carrier 12. In this way, positional changes of the driven member 153 in directions other than the first direction X are not easily transmitted to the carrier 12, resulting in higher reliability of the carrier 12.

[0246] For example, at least a portion of the first connecting surface 153a and at least a portion of the second connecting surface 12a may both be curved surfaces.

[0247] It is understandable that by setting at least a portion of the first connecting surface 153a and at least a portion of the second connecting surface 12a to be curved surfaces, point contact between the first connecting surface 153a and the second connecting surface 12a can be achieved, thereby achieving point contact between the follower 153 and the carrier 12. In this way, positional changes of the follower 153 in directions other than the first direction X are not easily transmitted to the carrier 12, resulting in higher reliability of the carrier 12.

[0248] For example, the first connecting surface 153a can be an arc surface, and the second connecting surface 12a can be a plane.

[0249] It is understandable that by setting the first connecting surface 153a as an arc surface and the second connecting surface 12a as a plane, point contact between the first connecting surface 153a and the second connecting surface 12a can be achieved, thereby achieving point contact between the driven member 153 and the carrier 12. In this way, positional changes of the driven member 153 in directions other than along the first direction X are not easily transmitted to the carrier 12, resulting in higher reliability of the carrier 12.

[0250] In other embodiments, the first connecting surface 153a and the second connecting surface 12a may also be configured in other ways. For example, the first connecting surface 153a may be a plane, and the second connecting surface 12a may be an arc surface. This application does not impose any specific limitations.

[0251] For example, the surface of the magnetic accumulator 1532 facing away from the second connecting surface 12a can be a curved surface, a flat surface, or other types of surfaces. This application does not specifically limit the type of surface. Figure 21 is a partial cross-sectional view of one embodiment of the motor 1 shown in Figure 19B at the FF line.

[0252] As shown in Figure 21, by way of example, the follower 153 can be movably connected to the base 11.

[0253] For example, at least a portion of the first sliding shaft portion 1535 may be located within the first sliding groove 1151, and at least a portion of the second sliding shaft portion 1536 may be located within the second sliding groove 1152.

[0254] Understandably, the driven member 153 can be movably connected to the base 11 via the first sliding shaft portion 1535 and the second sliding shaft portion 1536. Both the first sliding groove 1151 and the second sliding groove 1152 extend along the first direction X, guiding the first sliding shaft portion 1535 and the second sliding shaft portion 1536, allowing them to slide along the first direction X. Since both the first sliding shaft portion 1535 and the second sliding shaft portion 1536 are fixedly connected to the second connecting portion 1534, the driven member 153 can be driven to move relative to the base 11 along the first direction X via the first sliding shaft portion 1535 and the second sliding shaft portion 1536.

[0255] Understandably, since the cross-sections of the first sliding shaft portion 1535 and the second sliding shaft portion 1536 can both be approximately semi-circular, the noise generated between the first sliding shaft portion 1535, the second sliding shaft portion 1536 and the base 11 is relatively small during the movement of the follower 153 relative to the base 11, resulting in a better user experience.

[0256] For example, the cross-section of the first slide groove 1151 is approximately "V" shaped, and the first slide shaft portion 1535 abuts against both side walls of the first slide groove 1151. In other words, the first slide shaft portion 1535 and the two side walls of the first slide groove 1151 are in a zero-fit state.

[0257] It is understood that the first slide groove 1151 can limit the sliding direction of the first slide shaft portion 1535, thereby allowing the first slide shaft portion 1535 to slide relative to the extension direction of the first slide groove 1151 (i.e., the first direction X), which can reduce the probability of the first slide shaft portion 1535 deviating, thereby reducing the probability of the follower 153 deviating when moving along the first direction X, and further reducing the probability of the carrier 12 deviating when moving along the first direction X.

[0258] In addition, there is a certain amount of space between the second sliding shaft portion 1536 and the second sliding groove 1152, which can reduce the possibility of interference and thus avoid the phenomenon of jamming when the follower 153 moves along the first direction X.

[0259] For example, the first support groove 125 and the second support groove 126 can extend along a first direction X, and the first support groove 125 and the second support groove 126 can be arranged along a second direction Y. The first sliding groove 1151 and the second sliding groove 1152 can extend along the first direction X, and the first sliding groove 1151 and the second sliding groove 1152 can be arranged along a third direction Z. The first support groove 125 and the second support groove 126 can be independent of the first sliding groove 1151 and the second sliding groove 1152, and the arrangement direction of the first support groove 125 and the second support groove 126 can be approximately perpendicular to the arrangement direction of the first sliding groove 1151 and the second sliding groove 1152.

[0260] It is understood that the extension direction between the first support groove 125 and the second support groove 126 can be approximately parallel to the extension direction between the first slide groove 1151 and the second slide groove 1152, so that the carrier 12 and the driven member 153 can move together along the first direction X. The arrangement direction between the first support groove 125 and the second support groove 126 can be approximately perpendicular to the arrangement direction between the first slide groove 1151 and the second slide groove 1152. The first support groove 125 and the second support groove 126 connecting the carrier 12 and the first slide groove 1151 and the second slide groove 1152 connecting the piezoelectric actuator 15 are independent of each other and are approximately orthogonal in layout, which can ensure the movement stability of the carrier 12 and the driven member 153.

[0261] Please refer to Figure 21, and in conjunction with Figures 17 and 18, the first boss 1537 and the second boss 1538 of the first sliding shaft portion 1535 can abut against the two groove walls of the first sliding groove 1151. The third boss 1539 of the second sliding shaft portion 1536 can abut against the second sliding groove 1152.

[0262] It is understandable that the base 11 and the first sliding shaft portion 1535 are in contact through the first boss 1537 and the second boss 1538, and the base 11 and the second sliding shaft portion 1536 are in contact through the third boss 1539. The three-point contact method makes the connection between the base 11 and the first sliding shaft portion 1535 and the second sliding shaft portion 1536 more stable, improves the stability of the follower 153 moving relative to the base 11 in the first direction X, and thus improves the stability of the carrier 12 moving relative to the base 11 in the first direction X.

[0263] Figure 22A is a partial cross-sectional view of another embodiment of the motor 1 shown in Figure 19B at line DD. Figure 22B is an enlarged structural view of an embodiment of the motor 1 shown in Figure 22A at point G.

[0264] As shown in Figures 22A and 22B, exemplarily, the first connecting surface 153a may include a plane 153c and an arc surface 153d, with the arc surface 153d connected to the plane 153c. The second connecting surface 12a may be a plane.

[0265] For example, the arc surface 153d of the first connecting surface 153a can be magnetically connected to the second connecting surface 12a.

[0266] It is understandable that by setting a portion of the first connecting surface 153a as an arc surface 153d and the second connecting surface 12a as a plane, point contact can be achieved between the first connecting surface 153a and the second connecting surface 12a, thereby achieving point contact between the magnetic accumulator 1532 and the magnetic body 122, and further achieving point contact between the driven member 153 and the carrier 12. In this way, positional changes of the driven member 153 in directions other than the first direction X are less likely to be transmitted to the carrier 12, and the carrier 12 is less likely to move relative to the base 11 in directions other than the first direction X, resulting in higher reliability of the carrier 12.

[0267] As shown in Figures 22A and 22B, the magnetic chuck 1532 may, by way of example, include a magnetic chuck body 1501 and a protrusion 1502. The surface of the magnetic chuck body 1501 facing the magnetic body 122 may be planar. The protrusion 1502 may protrude from the surface of the magnetic chuck body 1501 facing the magnetic body 122 and be fixedly connected to the magnetic chuck body 1501.

[0268] For example, the convex hull 1502 can achieve magnetic attraction connection with the magnetic body 122 through point contact.

[0269] For example, the surface of the magnetic accumulator 1532 facing away from the second connecting surface 12a can be a curved surface, a flat surface, or other types of surfaces. This application does not specifically limit the type of surface.

[0270] FIG. 23 is a schematic structural diagram of the resonator 152 shown in FIG. 16 in an embodiment. FIG. 24 is a partial exploded schematic diagram of the resonator 152 shown in FIG. 23 in an embodiment.

[0271] As shown in FIGS. 23 and 24, by way of example, the resonator 152 may include an elastomer 1521, a driving foot 1522, a first piezoelectric ceramic 1523, and a second piezoelectric ceramic 1524. It can be understood that FIGS. 23, 24, and the following drawings only schematically show some components included in the resonator 152, and the actual shape, actual size, actual position, and actual structure of these components are not limited by FIGS. 23, 24, and the following drawings. For example, the resonator 152 may include more or fewer structures.

[0272] By way of example, the elastomer 1521 may include a first surface 152a and a second surface 152b disposed back to back.

[0273] By way of example, the driving foot 1522 may be fixedly connected to the first surface 152a. The first piezoelectric ceramic 1523 and the second piezoelectric ceramic 1524 may be fixedly connected to the second surface 152b at intervals.

[0274] It can be understood that the first piezoelectric ceramic 1523 and the second piezoelectric ceramic 1524 may deform when powered on, and the elastomer 1521 may convert this deformation into a macroscopic displacement.

[0275] By way of example, the elastomer 1521 may include a driving portion 1525, a first excitation portion 1526, and a second excitation portion 1527. In one embodiment, the driving portion 1525, the first excitation portion 1526, and the second excitation portion 1527 may be generally in the shape of a "king".

[0276] In other embodiments, the driving portion 1525, the first excitation portion 1526, and the second excitation portion 1527 may also be generally in other shapes. Specifically, the present application does not make a limitation.

[0277] By way of example, the driving foot 1522 may be located on one side of the driving portion 1525 and fixedly connected to the driving portion 1525. The first piezoelectric ceramic 1523 may be located on the side of the first excitation portion 1526 away from the driving foot 1522 and fixedly connected to the first excitation portion 1526. The second piezoelectric ceramic 1524 may be located on the side of the second excitation portion 1527 away from the driving foot 1522 and fixedly connected to the second excitation portion 1527.

[0278] For example, an electrode layer (not shown) may be coated on the surface of the first piezoelectric ceramic 1523 and the second piezoelectric ceramic 1524. The first piezoelectric ceramic 1523 and the second piezoelectric ceramic 1524 may be polarized in their thickness direction (i.e., the second direction Y), thereby deforming in a direction substantially perpendicular to their thickness direction (i.e., the first direction X) to excite the symmetrical bending vibration mode and the antisymmetric bending vibration mode of the first excitation part 1526 and the second excitation part 1527.

[0279] For example, the vibration of the first excitation part 1526 and the second excitation part 1527 can drive the drive part 1525 to perform reverse bending vibration, and can also drive the drive foot 1522 to perform transverse vibration approximately parallel to the plane (i.e., the XZ plane) where the elastic body 1521 is located, along the length direction of the elastic body 1521 (i.e., the first direction X).

[0280] Figure 25 is a partial structural schematic diagram of the pre-compression assembly 151 shown in Figure 16 in one embodiment. Figure 26 is a partial exploded schematic diagram of the pre-compression assembly 151 shown in Figure 25 in one embodiment.

[0281] Referring to Figures 25 and 26, and in conjunction with Figure 16, the pre-compression assembly 151 may, by way of example, include a bracket 156, a spring 157, and a pressure post 158.

[0282] For example, the bracket 156 may include a first end 1561, a middle portion 1562, and a second end 1563 connected in sequence.

[0283] For example, the reed 157 may include a first end 1571, a middle portion 1572, and a second end 1573 connected sequentially. In one embodiment, the first end 1571, the middle portion 1572, and the second end 1573 of the reed 157 can all undergo elastic deformation. Elastic deformation refers to the change in the relative positions of points on a solid due to an external force; when the external force is removed, the solid can return to its original shape. In other words, after the external force on the reed 157 is removed, the reed 157 can return to its original shape.

[0284] As shown in Figure 25, exemplarily, the spring 157 can be fixedly connected to the bracket 156. In one embodiment, the middle portion 1572 of the spring 157 can be fixedly connected to the first end 1561 of the bracket 156.

[0285] For example, the spring 157 can be fixedly connected to the bracket 156 by means of adhesive bonding, welding, or other methods. In other embodiments, the spring 157 can also be fixedly connected to the bracket 156 by other means.

[0286] Figure 27 is a partial structural schematic diagram of the piezoelectric actuator 15 shown in Figure 4 in one embodiment.

[0287] As shown in Figure 27, exemplarily, the resonator 152 can be fixedly connected to the bracket 156. In one embodiment, the resonator 152 can be fixedly connected to the middle portion 1562 of the bracket 156.

[0288] For example, the elastomer 1521 may be fixedly connected to the preload assembly 151. In one embodiment, the elastomer 1521 may be fixedly connected to the bracket 156.

[0289] Understandably, the preload assembly 151 can fix and support the elastomer 1521.

[0290] Figure 28 is a partial structural schematic diagram of the piezoelectric actuator 15 shown in Figure 4 in one embodiment. Figure 29 is a partial exploded schematic diagram of the motor 1 shown in Figure 3 in one embodiment (fourth). Figure 30 is a partial exploded schematic diagram of the motor 1 shown in Figure 3 in one embodiment (fifth). Figure 31 is a partial structural schematic diagram of the motor 1 shown in Figure 3 in one embodiment (third).

[0291] As shown in Figures 28 to 31, by way of example, the first circuit board 154 may include a first connection terminal 1541, a first intermediate terminal 1542 and a second connection terminal 1543 connected in sequence.

[0292] For example, the first connection end 1541 of the first circuit board 154 can be fixedly connected to and electrically connected to the first piezoelectric ceramic 1523. The first intermediate end 1542 of the first circuit board 154 can be fixedly connected to the bracket 156. The second connection end 1543 of the first circuit board 154 can be located between the bracket 156 and the base 11.

[0293] For example, the second circuit board 155 may include a third connection terminal 1551, a second intermediate terminal 1552, and a fourth connection terminal 1553.

[0294] For example, the third connection end 1551 of the second circuit board 155 can be fixedly connected to and electrically connected to the second piezoelectric ceramic 1524. The second intermediate end 1552 of the second circuit board 155 can be fixedly connected to the bracket 156. The fourth connection end 1553 of the second circuit board 155 can be located between the bracket 156 and the base 11.

[0295] Referring to Figure 31 and in conjunction with Figure 7, the piezoelectric actuator 15 can be electrically connected to the base 11, by way of example.

[0296] For example, the second connection terminal 1543 of the first circuit board 154 can be electrically connected to the first electrical connection terminal 1121. The first trace 1131 can electrically connect the first electrical connection terminal 1121 and the third electrical connection terminal 1123. In other words, the first piezoelectric ceramic 1523 of the resonator 152 can be electrically connected to the third electrical connection terminal 1123 through the first circuit board 154, the first electrical connection terminal 1121, the first trace 1131, and the first electrical connection terminal 1123.

[0297] For example, the fourth connection terminal 1553 of the second circuit board 155 can be electrically connected to the second electrical connection terminal 1122. The second trace 1132 can electrically connect the second electrical connection terminal 1122 and the fourth electrical connection terminal 1124. In other words, the first piezoelectric ceramic 1523 of the resonator 152 can be electrically connected to the fourth electrical connection terminal 1124 through the second circuit board 155, the second electrical connection terminal 1122, the second trace 1132, and the second electrical connection terminal 1124.

[0298] Figure 32 is a partial cross-sectional view of one embodiment of the motor 1 shown in Figure 31 at line HH.

[0299] As shown in Figures 31 and 32, exemplarily, the piezoelectric actuator 15 can be movably connected to the base 11 and fixedly connected to the carrier 12. The piezoelectric actuator 15 can be used to drive the carrier 12 to move relative to the base 11 along a first direction X.

[0300] For example, the follower 153 can be movably connected to the base 11, and the resonator 152 can be movably connected to the follower 153. In one embodiment, the resonator 152 can be movably connected to the follower 153 via a drive foot 1522.

[0301] For example, the preload assembly 151 can be fixed to the base 11.

[0302] As shown in Figures 30 and 32, exemplarily, the first end 1561 of the bracket 156 can be fixedly connected to the base 11, and the first end 1571 and the second end 1573 of the spring 157 can be fixedly connected to the base 11. The second end 1563 of the bracket 156 (see Figure 25) can be fixedly connected to the base 11, and the pressure column 158 can be fixedly connected to the base 11, thus fixing the second end 1563 of the bracket 156 to the base 11.

[0303] Understandably, the spring 157 elastically fixes the first end 1561 of the bracket 156 to the base 11. The reverse K value of the spring 157 is small, which can avoid large variations in the preload of the spring 157. In addition, the pressure column 158 fixes the second end 1563 of the bracket 156 to the base 11. The pressure column 158 can limit the bracket 156, thereby preventing the spring 157 from undergoing inelastic deformation. Inelastic deformation refers to the change in the relative position between points of a solid under the action of external force, and the solid cannot return to its original state after the external force is removed.

[0304] As shown in Figures 31 and 32, by way of example, the preload assembly 151 can be used to press the drive foot 1522 of the resonator 152 against the follower 153. The drive foot 1522 of the resonator 152 can be located within the friction groove 153b of the follower 153 and in contact with the groove wall of the friction groove 153b.

[0305] It is understandable that the driving foot 1522 of the resonator 152 can rub against the groove wall of the friction groove 153b, thereby generating a force along the first direction X, which in turn drives the driven member 153 to move relative to the resonator 152 along the first direction X.

[0306] Understandably, the preload assembly 151 can be used to provide a preload to the resonator 152 to abut against the follower 153, thereby enabling the resonator 152 to abut against the follower 153 under the action of the preload, which is beneficial to transmitting the macroscopic displacement generated by the micro vibration of the resonator 152 to the follower 153.

[0307] For example, the resonator 152 is used to drive the follower 153 to move the carrier 12 relative to the base 11 in a first direction X when energized.

[0308] It is understood that the piezoelectric actuator 15 can control the carrier 12 to move relative to the base 11 along the first direction X, thereby achieving focusing of the camera module 100 (see Figure 2). In this embodiment, the carrier 12 can be driven to move by the piezoelectric actuator 15; therefore, the motor 1 in this embodiment is neither a moving magnet motor nor a moving coil motor. This avoids electromagnetic interference between multiple different magnets. Since it is not necessary to increase the size of the motor 1 to make room for magnetic interference, the problem of a large motor 1 can be avoided, thus facilitating the miniaturization of the motor 1 in this embodiment.

[0309] As shown in Figure 32, by way of example, the first support groove 125 can be closer to the piezoelectric actuator 15 than the second support groove 126. The first support member 141 abuts against both side walls of the first support groove 125, and the first support member 141 and the two side walls of the first support groove 125 are in a zero-fit state.

[0310] It is understandable that by setting the first support groove 125 on the side close to the piezoelectric actuator 15, the piezoelectric actuator 15 can be located on the side where the carrier 12 and the first support member 141 are tightly fitted. This can improve the stability of the carrier 12 during movement and prevent the carrier 12 from tilting at a large angle, thereby improving the reliability of the carrier 12.

[0311] For example, the second support member 142 abuts against one side wall of the second support groove 126, and the second support member 142 and one side wall of the second support groove 126 are in a zero-match state.

[0312] In this way, there can be a gap between the second support member 142 and the second support groove 126. This gap allows the second support member 142 to have a certain amount of room to move on the surface that is approximately perpendicular to the first direction X, reducing the possibility of interference and preventing phenomena such as jamming when the carrier 12 moves along the first direction X.

[0313] Figure 33A is a partial cross-sectional view of one embodiment of the piezoelectric actuator 15 shown in Figure 4 at line II. Figure 33B is an enlarged structural view of one embodiment of the piezoelectric actuator 15 shown in Figure 33A at line J.

[0314] As shown in Figures 33A and 33B, by way of example, the surface of the drive foot 1522 may be provided with a first wear-resistant layer 1528. The first wear-resistant layer 1528 may abut against the follower 153.

[0315] For example, the material of the first wear-resistant layer 1528 may include nitride. The first wear-resistant layer 1528 may be formed on the surface of the drive foot 1522 by a stainless steel surface nitriding technique.

[0316] Understandably, stainless steel and nitrides have high hardness, and the first wear-resistant layer 1528 also has high hardness, which can improve the surface hardness of the drive foot 1522. Thus, during the friction between the drive foot 1522 and the driven member 153, the drive foot 1522 is less prone to wear or chipping, resulting in fewer black spots or shadows in the images or videos captured by the camera module 100, and thus higher image quality.

[0317] In other embodiments, the material of the first wear-resistant layer 1528 may also include other materials. This application does not specifically limit the application.

[0318] For example, the groove wall of the friction groove 153b of the follower 153 may be provided with a second wear-resistant layer 153e. The second wear-resistant layer 153e may abut against the first wear-resistant layer 1528 of the drive foot 1522.

[0319] For example, the material of the second wear-resistant layer 153e may include nitride. The second wear-resistant layer 153e may be formed on the surface of the follower 153 by a stainless steel surface nitriding technique.

[0320] It is understandable that stainless steel has a high hardness, and the second wear-resistant layer 153e also has a high hardness, which can improve the hardness of the groove wall of the friction groove 153b of the driven member 153. In this way, during the friction between the driving foot 1522 and the driven member 153, the driven member 153 is less likely to experience wear or chipping. As a result, black spots or shadows are less likely to appear in the images or videos captured by the camera module 100 (see Figure 2), and the imaging quality of the camera module 100 is higher.

[0321] In other embodiments, the material of the second wear-resistant layer 153e may also include other materials. This application does not specifically limit the application.

[0322] In other embodiments, the follower 153 may not have a friction groove 153b, and the second wear-resistant layer 153e may be located on the surface of the first connecting portion 1533 of the follower 153 facing the driving foot 1522 of the resonator 152. This application does not specifically limit the details.

[0323] Figure 34A is a partial cross-sectional view of another embodiment of the piezoelectric actuator 15 shown in Figure 4 at line II. Figure 34B is an enlarged structural view of an embodiment of the piezoelectric actuator 15 shown in Figure 34A at point K.

[0324] As shown in Figures 34A and 34B, exemplarily, the groove wall of the friction groove 153b of the follower 153 may be provided with a ceramic layer 153f. The ceramic layer 153f may abut against the first wear-resistant layer 1528 of the drive foot 1522.

[0325] In one embodiment, the ceramic layer 153f may cover the bottom of the groove wall of the friction groove 153b. The drive foot 1522 may contact the surface of the ceramic layer 153f.

[0326] For example, the material of the ceramic layer 153f may include ceramic.

[0327] It is understandable that ceramics have a high hardness, and the ceramic layer 153f also has a high hardness, which can improve the hardness of the groove wall of the friction groove 153b of the driven member 153. In this way, during the friction between the driving foot 1522 and the driven member 153, the driven member 153 is less likely to wear or shed chips. As a result, black spots or shadows are less likely to appear in the images or videos captured by the camera module 100 (see Figure 2), and the imaging quality of the camera module 100 is higher.

[0328] In other embodiments, the ceramic layer 153f may also be made of other materials. This application does not specifically limit the application to these materials.

[0329] For example, the thickness T of the ceramic layer 153f can satisfy: T≥0.05mm, for example, T can be equal to 0.05mm, 0.1mm, 0.18mm, 0.23mm or 0.3mm, etc.

[0330] It is understandable that by setting the thickness T of the ceramic layer 153f to be greater than or equal to 0.05mm, the ceramic layer 153f has a larger thickness and a higher hardness, which can improve the hardness of the groove wall of the friction groove 153b of the driven member 153. In this way, during the friction between the driving foot 1522 and the driven member 153, the driven member 153 is less likely to experience wear or chipping. As a result, black spots or shadows are less likely to appear in the images or videos captured by the camera module 100 (see Figure 2), and the imaging quality of the camera module 100 is higher.

[0331] In other embodiments, the thickness of the ceramic layer 153f may also fall within other ranges. This application does not specifically limit the application to this.

[0332] In other embodiments, the follower 153 may not have the friction groove 153b, and the ceramic layer 153f may be located on the surface of the first connecting portion 1533 of the follower 153 facing the driving foot 1522 of the resonator 152. This application does not specifically limit the details.

[0333] Figure 35 is a partial cross-sectional view of one embodiment of the motor 1 shown in Figure 31 at line LL. Figure 36 is a partial cross-sectional view of one embodiment of the motor 1 shown in Figure 31 at line MM.

[0334] As shown in Figures 35 and 36, by way of example, the pressure column 158 can be fixedly connected to the base 11, and the pressure column 158 can contact the second end 1563 of the bracket 156.

[0335] For example, the pressure column 158 can be fixedly connected to the base 11 by means of adhesive, welding or other methods.

[0336] In other embodiments, the pressure column 158 can also be fixedly connected to the base 11 by riveting or other means. This application does not specifically limit the method.

[0337] For example, the cross section of the pressure column 158, which is generally perpendicular to the third direction Z, can be generally circular.

[0338] It is understandable that the contact between the pressure column 158 and the second end 1563 of the bracket 156 can be a contact between an arc surface and a flat surface; in other words, the contact between the pressure column 158 and the bracket 156 can be a line contact. In actual products, if the pressure column 158 or the bracket 156 experiences some deformation or misalignment at the line contact point, resulting in a small area of ​​contact, this can also be assumed to be a fixed connection achieved through line contact.

[0339] Understandably, the line contact between the pressure column 158 and the support 156 improves the torsional stability of the support 156. This allows the pre-pressure component 151 to provide pre-pressure to the driving foot 1522 (see Figure 32) of the resonator 152, pressing it against the driven member 153. Under this pre-pressure, the resonator 152 can tightly abut against the driven member 153, thus ensuring that the macroscopic displacement generated by the micro-vibration of the resonator 152 is transmitted to the driven member 153. Furthermore, because the line contact between the pressure column 158 and the support 156 provides strong anti-sway capability for the support 156, it avoids output fluctuations and noise caused by the swaying of the support 156, resulting in a better user experience.

[0340] In other embodiments, the cross-section of the pressure column 158 may also be approximately other shapes. For example, the cross-section of the pressure column 158 may be approximately semi-circular, and the arc-shaped surface of the pressure column 158 contacts the second end 1563 of the bracket 156. In this case, the contact between the pressure column 158 and the bracket 156 may also be a line contact. This application does not specifically limit the details.

[0341] Figure 37 is a partial cross-sectional view of another embodiment of the motor 1 shown in Figure 31 at the MM line.

[0342] As shown in Figure 37, exemplarily, the cross-section of the pressure column 158, which is generally perpendicular to the third direction Z, can be generally polygonal. In one embodiment, the cross-section of the pressure column 158 can be generally hexagonal. The hexagon can be a regular hexagon or other forms of hexagon. This application does not specifically limit the application.

[0343] It is understandable that the contact between the pressure column 158 and the support 156 is a surface contact, which can improve the torsional stability of the support 156. This allows the pre-pressure component 151 to provide a pre-pressure to the driving foot 1522 (see Figure 32) of the resonator 152, which presses against the follower 153. Under the action of the pre-pressure, the resonator 152 can closely abut against the follower 153, which helps to ensure that the macroscopic displacement generated by the micro-vibration of the resonator 152 is transmitted to the follower 153.

[0344] In other embodiments, the cross-section of the pressure column 158 may also be approximately other shapes, such as a quadrilateral, pentagon, or irregular shape. In this case, the contact method between the pressure column 158 and the bracket 156 may also be surface contact. This application does not specifically limit the details.

[0345] Figure 38 is a structural schematic diagram of the motor 1 shown in Figure 31 from another angle. Figure 39 is a partially exploded schematic diagram of the motor 1 shown in Figure 38 in one embodiment.

[0346] As shown in Figures 38 and 39, exemplarily, the bracket 156 may be located between the second side plate 1113 and the fourth side plate 1115 of the base 11. In one embodiment, the middle portion 1562 of the bracket 156 may abut against the end of the second side plate 1113 near the first side plate 1112 and the end of the fourth side plate 1115 near the first side plate 1112, respectively.

[0347] Understandably, the second side plate 1113 and the fourth side plate 1115 of the base 11 can limit the bracket 156 along the first direction X, making it less likely for the bracket 156 to detach from the base 11, thus improving the reliability of the bracket 156. When the driven member 153 moves relative to the base 11, the bracket 156 can provide a stable preload to the resonator 152, allowing the driving foot 1522 of the resonator 152 (see Figure 32) to abut tightly against the driven member 153, making the connection between the resonator 152 and the driven member 153 more reliable.

[0348] For example, the first end 1561 of the bracket 156 can be fixedly connected to the first limiting groove 116, and the second end 1563 of the bracket 156 can be fixedly connected to the second limiting groove 117.

[0349] Understandably, the base 11 can limit the support 156 along the third direction Z, making it less likely for the support 156 to detach from the base 11, thus improving its reliability. When the driven member 153 moves relative to the base 11, the support 156 can provide a stable preload to the resonator 152, allowing the driving foot 1522 of the resonator 152 (see Figure 32) to abut tightly against the driven member 153, resulting in a more reliable connection between the resonator 152 and the driven member 153.

[0350] Figure 40 is a partial structural schematic diagram of the circuit board assembly 16 shown in Figure 4 from another angle. Figure 41 is a partial structural schematic diagram of the circuit board assembly 16 shown in Figure 40 from another angle. Figure 42 is a partial structural schematic diagram of the motor 1 shown in Figure 3 in one embodiment. Figure 43 is a partial cross-sectional schematic diagram of the motor 1 shown in Figure 42 at line NN in one embodiment.

[0351] As shown in Figures 40 to 43, the circuit board assembly 16 may, by way of example, include a main circuit board 161, a position sensor 162, a third magnetic element 163, and electronic devices 164.

[0352] As shown in FIG41, by way of example, the position sensor 162 can be fixedly connected to one side of the main circuit board 161 and electrically connected to the main circuit board 161.

[0353] As shown in Figures 42 and 43, exemplarily, the circuit board assembly 16 can be fixedly connected to the base 11 and located on the side of the base 11 away from the piezoelectric actuator 15.

[0354] For example, the main circuit board 161 may be fixedly connected to the base 11 and located on the side of the base 11 away from the piezoelectric actuator 15.

[0355] For example, the main circuit board 161 can be fixedly connected to the base 11 by means of adhesive or other methods. In other embodiments, the main circuit board 161 can also be fixedly connected to the base 11 by other means. This application does not limit the specific method.

[0356] As shown in FIG43, by way of example, at least a portion of the position sensor 162 may be located within the third through hole 111a and the fourth through hole 111b of the base 11 (see FIG6).

[0357] As shown in Figure 43, by way of example, the third magnetic element 163 can be fixedly connected to the carrier 12. In one embodiment, at least a portion of the third magnetic element 163 can be located within the third mounting groove 1273 of the carrier 12.

[0358] As shown in Figure 43, by way of example, the position sensor 162 can be disposed opposite to the third magnetic element 163.

[0359] For example, the position sensor 162 may be a tunnel magnetoresistance (TMR) sensor or a Hall sensor.

[0360] For example, the TMR sensor operates based on the magnetotunneling resistance effect, which involves forming a structure with two magnetic layers sandwiched between a non-magnetic layer. When an external magnetic field (e.g., the magnetic field provided by the third magnetic element 163) interacts with the magnetic field in the magnetic layers, the direction of the magnetic field changes, thereby altering the value of the magnetotunneling resistance. This change in resistance is correlated with the change in the external magnetic field and can therefore be used to detect the strength and direction of the magnetic field.

[0361] For example, the Hall sensor operates based on the Hall effect, which states that when an electric current passes through a conductor, if the conductor is in a magnetic field (e.g., a magnetic field provided by the third magnetic element 163), a potential difference is generated across the conductor. This potential difference is related to the strength and direction of the magnetic field and can therefore be used to detect the strength and direction of the magnetic field.

[0362] Understandably, the position sensor 162 can detect changes in the magnetic field of the third magnetic component 163. The processor can obtain the real-time position of the carrier 12 based on the detection results of the position sensor 162, thereby enabling precise control of the displacement of the carrier 12 and achieving closed-loop control of the carrier 12. The carrier 12 has high reliability.

[0363] In other embodiments, the position sensor 162 may also employ other types of sensors. This application does not specifically limit the application to these methods.

[0364] As shown in Figures 40 and 42, the electronic device 164 can be fixedly connected to the main circuit board 161 and is located on the side of the main circuit board 161 away from the base 11.

[0365] For example, in the second direction Y, the height of the anti-collision protrusion 118 of the base 11 can be greater than the height of the electronic device 164.

[0366] Understandably, since the height of the anti-collision protrusion 118 along the second direction Y is greater than the height of the electronic device 164 along the second direction Y, the anti-collision protrusion 118 can protect the electronic device 164. Compared to the electronic device 164, other components are more likely to collide with the anti-collision protrusion 118, while the electronic device 164 is less likely to collide with other components. Therefore, the electronic device 164 is less likely to malfunction or be damaged due to collisions, and the reliability of the electronic device 164 and the circuit board assembly 16 is relatively high.

[0367] Please refer to Figures 42 and 43, and in conjunction with Figure 31, for example, the third electrical connection terminal 1123 and the fourth electrical connection terminal 1124 can be electrically connected to the main circuit board 161.

[0368] For example, the first circuit board 154 can be electrically connected to the main circuit board 161 via a first electrical connection terminal 1121, a first trace 1131, and a third electrical connection terminal 1123. The second circuit board 155 can be electrically connected to the main circuit board 161 via a second electrical connection terminal 1122, a second trace 1132, and a fourth electrical connection terminal 1124. In this way, the piezoelectric actuator 15 can be electrically connected to the circuit board assembly 16.

[0369] It is understandable that the piezoelectric actuator 15 can be electrically connected to the circuit board assembly 16 through the base 11. The piezoelectric actuator 15 can be electrically connected without the need for additional structural components, which helps to reduce the number of structural components of the motor 1 and thus facilitates the miniaturization of the motor 1.

[0370] Figure 44 is a partial structural schematic diagram of the motor 1 shown in Figure 4 in one embodiment. Figure 45A is a partial cross-sectional schematic diagram of the motor 1 shown in Figure 3 at line OO in one embodiment. Figure 45B is an enlarged structural schematic diagram of the motor 1 shown in Figure 45A at point P in one embodiment.

[0371] As shown in Figures 44, 45A and 45B, the motor 1 may, by way of example, also include a first dust-collecting adhesive 181.

[0372] For example, the first dust-catching adhesive 181 may be fixedly connected to the follower 153 and located on the side of the follower 153 near the resonator 152. In one embodiment, the first dust-catching adhesive 181 may be fixedly connected to the first connecting portion 1533 of the follower 153 and located on the side of the first connecting portion 1533 of the follower 153 away from the second connecting portion 1534.

[0373] Understandably, the first dust-catching adhesive 181 can capture the debris generated by the friction between the driving foot 1522 of the resonator 152 and the follower 153, preventing the debris from falling onto the lens, thereby avoiding black spots or shadows in the images captured by the camera module 100 (see Figure 2), and thus improving the imaging quality of the camera module 100.

[0374] Figure 46 is a partial structural schematic diagram of the outer casing 17 shown in Figure 4 in one embodiment.

[0375] As shown in FIG46, by way of example, the housing 17 may include a top 171, a first side 172, a second side 173, a third side 174, and a fourth side 175.

[0376] Exemplarily, the first side portion 172, the second side portion 173, the third side portion 174, and the fourth side portion 175 can be located on the same side of the top 171 and fixedly connected to the top 171. The first side portion 172 and the third side portion 174 can be arranged opposite each other and spaced apart, and the second side portion 173 can be connected between the first side portion 172 and the third side portion 174. The second side portion 173 and the fourth side portion 175 can be arranged opposite each other and spaced apart, and the first side portion 172 can be connected between the second side portion 173 and the fourth side portion 175. In other embodiments, the housing 17 can also adopt other structures. Specifically, this application does not limit the specific implementation.

[0377] It is understood that, for ease of describing the specific structure and shape of the outer casing 17, this embodiment describes the outer casing 17 in five parts. However, this does not affect the fact that the outer casing 17 can be a one-piece molded structure, that is, the top 171, the first side 172, the second side 173, the third side 174, and the fourth side 175 can be integrally molded. In other embodiments, the outer casing 17 can also be formed by different independent structural components through an assembly process. For example, the first side 172, the second side 173, the third side 174, and the fourth side 175 of the outer casing 17 can be independent structural components and are fixedly connected to the top 171 by means of adhesive bonding, welding, etc.

[0378] Figure 47 is a partial structural schematic diagram of the motor 1 shown in Figure 3 from another angle. Figure 48A is a partial cross-sectional schematic diagram of one embodiment of the motor 1 shown in Figure 3 at line QQ.

[0379] As shown in Figures 47 and 48A, by way of example, the motor 1 may also include a second dust-collecting adhesive 182 and a third dust-collecting adhesive 183.

[0380] As shown in FIG48A, by way of example, the second dust-collecting adhesive 182 may be located on the base plate 1111 fixedly connected to the base 11, and on the side of the base plate 1111 close to the first side plate 1112.

[0381] Understandably, the second dust-catching adhesive 182 can capture the debris generated by the friction between the driving foot 1522 (see Figure 45A) of the resonator 152 and the driven member 153 (see Figure 45A), preventing the debris from falling onto the lens, thereby avoiding black spots or shadows in the images captured by the camera module 100 (see Figure 2), and thus improving the imaging quality of the camera module 100.

[0382] Figure 48B is an enlarged schematic diagram of one embodiment of the motor 1 shown in Figure 48A at point R.

[0383] As shown in Figures 47, 48A and 48B, by way of example, the third dust-collecting adhesive 183 can be fixedly connected to the top 171 of the housing 17 and located on the side of the top 171 near the base 11.

[0384] Understandably, the third dust-catching adhesive 183 can capture the debris generated by the friction between the driving foot 1522 (see Figure 45A) of the resonator 152 and the driven member 153 (see Figure 45A), preventing the debris from falling onto the lens, thereby avoiding black spots or shadows in the images captured by the camera module 100 (see Figure 2), and thus improving the imaging quality of the camera module 100.

[0385] As shown in Figures 48A and 48B, the anti-collision protrusion 118 of the base 11 can be disposed opposite to the third side 174 of the outer shell 17.

[0386] It is understandable that during the process of assembling the housing 17 onto the base 11, the housing 17 is less likely to collide with the electronic components 164 of the circuit board assembly 16. The electronic components 164 are less likely to malfunction or be damaged due to collision, thereby ensuring the reliability of the electronic components 164, and thus ensuring the reliability of the circuit board assembly 16 and the motor 1.

[0387] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments described in this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0388] It should be noted that all the above-described figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application. The above are merely some embodiments and implementations of this application, and the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A motor (1) characterized in that, The device includes a base (11), a carrier (12), and a piezoelectric actuator (15). The carrier (12) is movably connected to the base (11), and the piezoelectric actuator (15) is movably connected to the base (11) and fixedly connected to the carrier (12). The piezoelectric actuator (15) is used to drive the carrier (12) to move relative to the base (11) in a first direction. The piezoelectric actuator (15) includes a preload assembly (151), a resonator (152), and a follower (153); The driven member (153) is movably connected to the base (11) and fixedly connected to the carrier (12); The resonator (152) is fixedly connected to the preload assembly (151), the preload assembly (151) is fixed to the base (11), the preload assembly (151) is used to press the driving foot (1522) of the resonator (152) onto the driven member (153), and the resonator (152) is used to drive the driven member (153) to move the carrier (12) relative to the base (11) in a first direction when energized; The driven member (153) has a first connecting surface (153a), and the carrier (12) has a second connecting surface (12a). The first connecting surface (153a) and the second connecting surface (12a) are magnetically connected.

2. The motor (1) according to claim 1, characterized in that At least one of the first connecting surface (153a) and at least one of the second connecting surface (12a) is a curved surface and the other is a plane, or at least one of the first connecting surface (153a) and at least one of the second connecting surface (12a) are both curved surfaces.

3. The motor (1) according to claim 2, characterized in that The first connecting surface (153a) is an arc surface, and the second connecting surface (12a) is a plane; or, the first connecting surface (153a) includes a plane (153c) and an arc surface (153d), the arc surface (153d) is connected to the plane (153c), the second connecting surface (12a) is a plane, and the arc surface of the first connecting surface (153a) is fixedly connected to the second connecting surface (12a).

4. The motor (1) according to any one of claims 1 to 3, characterized in that The carrier (12) includes a carrier body (121) and a magnetic body (122). The magnetic body (122) is fixedly connected to the carrier body (121), and the carrier body (121) is movably connected to the base (11). The follower (153) includes a follower body (1531) and a magnetic accumulator (1532). The magnetic accumulator (1532) is fixedly connected to the follower body (1531). The follower body (1531) is movably connected to the base (11). The magnetic body (122) is disposed opposite to the magnetic accumulator (1532). The surface of the magnetic accumulator (1532) facing the magnetic body (122) is the first connecting surface (153a), and the surface of the magnetic body (122) facing the magnetic accumulator (1532) is the second connecting surface (12a).

5. The motor (1) according to claim 4, characterized in that The carrier body (121) is provided with a first groove (123), and at least a portion of the magnetic body (122) and at least a portion of the magnetic attractor (1532) are located in the first groove (123).

6. The motor (1) according to claim 4, characterized in that The base (11) encloses a receiving space (114), and at least a portion of the carrier (12) is located within the receiving space (114); The driven body (1531) includes a first connecting part (1533) and a second connecting part (1534), the second connecting part (1534) is bent and connected to the first connecting part (1533), and is at least partially located on one side of the first connecting part (1533), and the magnetic attractor (1532) is fixedly connected to the second connecting part (1534). The first connecting part (1533) is located on the side of the base (11) away from the carrier body (121) and is slidably connected to the base (11). A portion of the second connecting part (1534) crosses the base (11) and extends into the receiving space (114).

7. The motor (1) according to claim 6, characterized in that The driven body (1531) further includes a first sliding shaft portion (1535) and a second sliding shaft portion (1536), wherein the first sliding shaft portion (1535) and the second sliding shaft portion (1536) protrude from the surface of the first connecting portion (1533) facing the second connecting portion (1534); The base (11) includes a first slide groove (1151) and a second slide groove (1152), at least a portion of the first slide shaft portion (1535) is located in the first slide groove (1151), and at least a portion of the second slide shaft portion (1536) is located in the second slide groove (1152).

8. The motor (1) according to claim 7, characterized in that The motor (1) further includes a first support member (141) and a second support member (142), and the carrier (12) is movably connected to the base (11) through the first support member (141) and the second support member (142); The carrier body (121) includes a first support groove (125) and a second support groove (126) spaced apart, at least a portion of the first support member (141) is located in the first support groove (125), and at least a portion of the second support member (142) is located in the second support groove (126). The first support groove (125) and the second support groove (126) both extend along the first direction, the first support groove (125) and the second support groove (126) are both arranged along the second direction, the first slide groove (1151) and the second slide groove (1152) both extend along the first direction, and the first slide groove (1151) and the second slide groove (1152) are arranged along a third direction, wherein the first direction, the second direction and the third direction are different from each other.

9. The motor (1) according to claim 8, characterized in that The first support groove (125) includes a first sidewall (1251) and a second sidewall (1252). The first sidewall (1251) and the second sidewall (1252) are arranged opposite to each other and inclined. The distance between the first sidewall (1251) and the second sidewall (1252) at the opening of the first support groove (125) is greater than the distance between the first sidewall (1251) and the second sidewall (1252) at the bottom of the groove of the first support groove (125). The first support member (141) is in contact with the first sidewall (1251) and the second sidewall (1252). Compared to the second support groove (126), the first support groove (125) is closer to the piezoelectric actuator (15).

10. The motor (1) according to claim 9, characterized in that The cross-section of the first support groove (125) is V-shaped or trapezoidal.

11. The motor (1) according to any one of claims 8 to 10, characterized in that The motor (1) further includes a first magnetic component (131) and a second magnetic component (132), wherein the first magnetic component (131) and the second magnetic component (132) are fixedly connected to the carrier (12); The first support member (141) is made of magnetic material and is disposed opposite to the first magnetic member (131), and / or the second support member (142) is made of magnetic material and is disposed opposite to the second magnetic member (132).

12. The motor (1) according to any one of claims 7 to 10, characterized in that The surface of the first sliding shaft portion (1535) is provided with a first protrusion (1537) and a second protrusion (1538) spaced apart, and the first protrusion (1537) and the second protrusion (1538) abut against the first sliding groove (1151). The surface of the second sliding shaft portion (1536) is provided with a third protrusion (1539), which abuts against the second sliding groove (1152).

13. The motor (1) according to claim 12, characterized in that The cross-sections of the first sliding shaft portion (1535) and the second sliding shaft portion (1536) are semi-circular.

14. The motor (1) according to claim 6, characterized in that The first connecting part (1533) of the follower (153) is provided with a friction groove (153b), and the driving foot (1522) of the resonator (152) is located in the friction groove (153b) and contacts the groove wall of the friction groove (153b).

15. The motor (1) according to any one of claims 1 to 3, characterized in that, The surface of the driving foot (1522) of the resonator (152) is provided with a first wear-resistant layer (1528), and the material of the first wear-resistant layer (1528) includes nitride.

16. The motor (1) according to any one of claims 1 to 3, characterized in that The follower (153) is provided with a second wear-resistant layer (153e), the material of which includes nitride.

17. The motor (1) according to any one of claims 1 to 3, characterized in that The driven member (153) is provided with a ceramic layer (153f), and the driving foot (1522) of the resonator (152) is in contact with the ceramic layer (153f). The thickness T of the ceramic layer (153f) satisfies: T≥0.05mm.

18. The motor (1) according to claim 14, characterized in that The pre-compression assembly (151) includes a bracket (156) and a pressure column (158). The bracket (156) includes a first end (1561), a middle part (1562), and a second end (1563) connected in sequence. The resonator (152) is fixedly connected to the middle part (1562) of the bracket (156). The first end (1561) of the bracket (156) is fixedly connected to the base (11), the pressure column (158) is fixedly connected to the base (11), and the second end (1563) of the bracket (156) is fixed on the base (11).

19. The motor (1) according to claim 18, characterized in that The base (11) is provided with a first limiting groove (116), and the first end (1561) of the bracket (156) is fixedly connected to the first limiting groove (116); And / or, the base (11) is provided with a second limiting groove (117), and the second end (1563) of the bracket (156) is fixedly connected to the second limiting groove (117).

20. The motor (1) according to claim 18, characterized in that The preload assembly (151) also includes a spring (157), the first end (1571) and the second end (1573) of the spring (157) are fixedly connected to the base (11), and the middle part (1572) of the spring (157) is fixedly connected to the first end (1561) of the bracket (156).

21. The motor (1) according to claim 18, characterized in that The cross-section of the pressure column (158) is circular, semi-circular, or polygonal.

22. The motor (1) according to claim 18, characterized in that The resonator (152) includes an elastic body (1521), a driving foot (1522), a first piezoelectric ceramic (1523) and a second piezoelectric ceramic (1524), and the elastic body (1521) is fixedly connected to the preload assembly (151). The elastomer (1521) includes a first surface (152a) and a second surface (152b) disposed opposite to each other. The first surface (152a) is disposed toward the follower (153). The driving foot (1522) is fixedly connected to the first surface (152a). The first piezoelectric ceramic (1523) and the second piezoelectric ceramic (1524) are fixedly connected to the second surface (152b) at intervals.

23. The motor (1) according to claim 22, characterized in that The motor (1) also includes a circuit board assembly (16), which includes a main circuit board (161), a position sensor (162), and a third magnetic component (163), which is fixedly connected to the carrier (12). The position sensor (162) is fixedly connected to the main circuit board (161) and electrically connected to the main circuit board (161); The main circuit board (161) is fixedly connected to the base (11) and is located on the side of the base (11) away from the piezoelectric actuator (15). The position sensor (162) is arranged opposite to the third magnetic component (163).

24. The motor (1) according to claim 23, characterized in that The piezoelectric actuator (15) further includes a first circuit board (154) and a second circuit board (155). The first circuit board (154) is fixedly connected to the first piezoelectric ceramic (1523) and electrically connected. The second circuit board (155) is fixedly connected to the second piezoelectric ceramic (1524) and electrically connected. The base (11) includes a base body (111), a first electrical connection terminal (1121), a second electrical connection terminal (1122), a third electrical connection terminal (1123), a fourth electrical connection terminal (1124), a first wiring (1131), and a second wiring (1132); The first electrical connection terminal (1121), the second electrical connection terminal (1122), the third electrical connection terminal (1123), and the fourth electrical connection terminal (1124) are fixedly connected to the base body (111) at intervals and exposed relative to the base body (111). The first electrical connection terminal (1121) and the second electrical connection terminal (1122) are electrically connected to the first circuit board (154) and the second circuit board (155) respectively. The third electrical connection terminal (1123) and the fourth electrical connection terminal (1124) are electrically connected to the main circuit board (161). The first trace (1131) and the second trace (1132) are embedded in the base body (111). The first trace (1131) is electrically connected to the first electrical connection terminal (1121) and the third electrical connection terminal (1123), and the second trace (1132) is electrically connected to the second electrical connection terminal (1122) and the fourth electrical connection terminal (1124).

25. The motor (1) according to claim 23, characterized in that The circuit board assembly (16) also includes an electronic device (164), which is fixedly connected to the main circuit board (161) and located on the side of the main circuit board (161) away from the base (11). The base (11) has an anti-collision protrusion (118) with a height greater than that of the electronic device (164).

26. The motor (1) according to any one of claims 18 to 25, characterized in that, The motor (1) also includes a first dust-catching adhesive (181), which is fixedly connected to the follower (153) and located on the side of the follower (153) near the resonator (152).

27. The motor (1) according to any one of claims 18 to 25, characterized in that, The base (11) includes a base plate (1111), a first side plate (1112), a second side plate (1113), a third side plate (1114), and a fourth side plate (1115). The first side plate (1112), the second side plate (1113), the third side plate (1114), and the fourth side plate (1115) are located on the same side of the base plate (1111) and are fixedly connected to the base plate (1111). The motor (1) also includes a second dust-collecting adhesive (182), which is fixedly connected to the base plate (1111) and located on the side of the base plate (1111) near the first side plate (1112).

28. The motor (1) according to any one of claims 18 to 25, characterized in that, The motor (1) also includes a housing (17) and a third dust-collecting adhesive (183), the third dust-collecting adhesive (183) being fixedly connected to the housing (17); The outer casing (17) includes a top (171), a first side (172), a second side (173), a third side (174), and a fourth side (175), wherein the first side (172), the second side (173), the third side (174), and the fourth side (175) are located on the same side of the top (171) and are fixedly connected to the top (171); The outer shell (17) covers the base (11), and the third dust-collecting adhesive (183) is fixedly connected to the top (171) and located on the side of the top (171) near the base (11).

29. A camera module (100), characterized by It includes a lens and a motor (1) as described in any one of claims 1 to 28, wherein the lens is fixedly connected to the carrier (12).

30. An electronic device (1000), characterized by: It includes a housing (200) and a camera module (100) as described in claim 29, wherein the camera module (100) is disposed within the housing (200).

Images