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 first carrier, a first guide member and a second guide member. The first carrier is provided with a first sliding groove and a second sliding groove. A plurality of first limiting structures are provided in the first sliding groove; the first guide member abuts against the interior of the first limiting structures; and the second guide member is disposed in the second sliding groove. The motor further comprises n first coils, m first magnet units and m second magnet units, wherein the first magnet units and the second magnet units are both fixedly connected to the base, and enclose a magnetic gap. The first coils are fixedly connected to a side surface of the first carrier. The n first coils are located in the magnetic gap. In a second direction, the distances between the first coils and the first sliding groove are less than the distances between the first coils and the second sliding groove. In this way, the first coils are subjected to a relatively large acting force, which facilitates the rapid movement of the first carrier. The first coils are disposed on the side of the first carrier that is close to the first sliding groove, thereby facilitating the stable movement of the first carrier, and thus reducing noise.

Description

Motors, camera modules, and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202410932136.X, filed on July 11, 2024, entitled "Motor, Camera Module and Electronic Device", and Chinese Patent Application No. 202411548986.6, filed on October 30, 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] To capture clear images at both close and long distances, lens zoom control is an indispensable function of mobile camera devices. However, current mobile phone lenses do not offer continuous zoom; instead, they achieve zoom within a specific range by switching between multiple camera modules. Multiple camera modules occupy significant space and increase costs, and the zoom range is limited. Therefore, continuous optical zoom is the future trend for electronic device cameras. High-magnification continuous zoom requires the continuous, long-stroke movement of multiple lens groups to change the focal length of the optical system. In conventional coil-magnet drive schemes, the angle between the coil's winding plane and the magnetic lines of force is large, resulting in significant forces on the coil in the non-moving direction and consequently, higher noise levels. Therefore, it is necessary to design a long-stroke motor that can move quickly and quietly. Summary of the Invention

[0004] This application provides a long-stroke motor, a camera module, and an electronic device that can move quickly and quietly.

[0005] In a first aspect, embodiments of this application provide a motor. The motor includes a base, a first carrier, a first guide member, and a second guide member, with the first carrier movably connected to the base. The first carrier has a first groove and a second groove, the extension direction of the first groove being parallel to a first direction, the extension direction of the second groove being parallel to the first direction, and the first and second grooves being spaced apart along a second direction, the first and second directions intersecting. The first groove has a plurality of first limiting structures, the plurality of first limiting structures being spaced apart along the first direction, the first guide member abutting against the first limiting structure, and the second guide member being disposed in the second groove. The motor also includes n first coils, m sets of first magnet units, and m sets of second magnet units, the first magnet units and the second magnet units being fixedly connected to the base, the first coils being fixedly connected to the side of the first carrier, where n and m are integers greater than or equal to, and m is greater than n. n first coils, m groups of first magnetic units, and m groups of second magnetic units are all arranged along a first direction. The m groups of first and second magnetic units are arranged at intervals along a second direction, forming a magnetic gap. The m groups of first and second magnetic units are arranged in a one-to-one correspondence. The polarity directions of the first and second magnetic units are opposite to each other in the second direction and perpendicular to the winding plane of the first coils. The n first coils are located within the magnetic gap and face the m groups of first and second magnetic units. After multiphase current is passed through the n first coils, they are used to drive the first carrier to move relative to the base in the first direction. In the second direction, the distance between the first coil and the first groove is less than the distance between the first coil and the second groove.

[0006] It is understood that the first slide groove has multiple first limiting structures arranged at intervals along the first direction, and the first guide member abuts against the first limiting structure. The first guide member and the first slide groove have multiple contact points in the first direction. The multiple first limiting structures can be used to constrain the degree of freedom of the first carrier to rotate about a third direction, reduce the risk of the first carrier rotating about an axis parallel to the third direction during movement, and help improve the stability of the first carrier's movement.

[0007] The m groups of first and second magnet units are arranged in a one-to-one correspondence, allowing the magnetic field lines of the m groups of first and second magnet units to close rapidly, forming a periodically changing magnetic field along the first direction within the magnetic gap. Compared to a scheme where only one or both first and second magnet units are set on one side of the first coil, this embodiment sets magnet units on both sides of the first coil. The magnetic flux density within the magnetic gap is greater. When the number of coils is the same, the Ampere force experienced by n first coils after energization is greater, resulting in a faster speed when the first coil drives the first carrier, which is beneficial for rapid focusing or zooming. Furthermore, the direction of the magnetic field within the magnetic gap is mostly or entirely perpendicular to the winding plane of the first coil. The Ampere force experienced by the first coil after energization is parallel to the winding plane of the first coil or has a small angle with the winding plane. The first coil exerts a greater force to drive the first carrier in the first direction, allowing the first carrier to move at a faster speed, which is beneficial for rapid focusing or zooming. In addition, the component of the Ampere force on the first coil in the direction perpendicular to the winding plane is small, and the force on the first carrier in the non-moving direction is small. The first carrier is not easy to shake, which is beneficial to the smoothness of motor operation and can reduce the noise when the motor drives the first optical element to move.

[0008] Torque is calculated as lever arm multiplied by torque. During the movement of the first carrier relative to the base in the first direction, the magnitude of the first carrier's rotational tendency around the Y-axis (third direction) and the magnitude of the driving force on the first coil, as well as the distance between the first coil and the first groove in the second direction, are all closely related. Compared to placing the first coil closer to the second groove in the second direction, this embodiment positions the first coil closer to the first groove, which reduces the lever arm of the driving force. When the current and torque of the first coil remain constant, reducing the lever arm L of the driving force can reduce the torque, thereby reducing the tendency of the first carrier to rotate around the Y-axis (third direction). This prevents the first carrier from rotating too much around the Y-axis (third direction), causing it to detach from the first guide member, resulting in unstable posture (floating upwards) and tilting. Installing the first coil on one side of the first groove of the first carrier is beneficial for the stable movement of the first carrier by the motor.

[0009] In one possible implementation, the first limiting structure includes a first limiting surface and a second limiting surface arranged along a second direction, with a first guide member abutting between the first limiting surface and the second limiting surface.

[0010] Understandably, the first limiting structure and the first sliding groove have two contact points in the second direction, enabling rapid positioning of the first carrier in the second direction during the assembly of the first carrier, the first guide member, and the second guide member. Furthermore, when the actual product size of the first guide rod is slightly larger than the design size due to tolerance, the first limiting structure can still be assembled within the "V"-shaped first limiting structure, which can also be used for tolerance.

[0011] In one possible implementation, the base includes a bottom plate and side plates, with the side plates fixedly connected to the periphery of the bottom plate. The side plates and the bottom plate enclose a movement space, where a first carrier is located. The bottom surface of the first carrier faces the bottom plate, and the side surface of the first carrier faces the side plates. The openings of both the first and second slide grooves are located on the bottom surface of the first carrier.

[0012] It is understood that the openings of the first and second slides are both located on the bottom surface of the first carrier. During the assembly of the motor, the installation direction of the first carrier can be towards the bottom plate of the base. Compared with the scheme where the openings of the first and second slides are both located on the side of the first carrier, the scheme of this embodiment is beneficial to reducing the assembly difficulty.

[0013] In one possible implementation, the first limiting surface and the second limiting surface are the groove wall surfaces of the first sliding groove.

[0014] It is understandable that the first limiting surface and the second limiting surface can be the groove wall surface of the first slide, without the need for a separate device to form the first limiting structure, which helps to simplify the structure of the motor and reduce the assembly difficulty.

[0015] In one possible implementation, the first guide member is a first guide rod, which is fixedly connected to the base and slidably connected within a first groove. Alternatively, the first guide member is a ball bearing, the base has a first guide groove with its opening facing the first carrier, the first guide groove and the first groove are opposite to each other, and the ball bearing is rotatably connected within the first groove and the first guide groove.

[0016] It is understandable that the sliding shaft (first guide rod) and the sliding groove of the second carrier are used to realize the movement of the second carrier relative to the base. The high straightness of the sliding shaft can ensure the high precision of the second optical element and the minimal tilt movement.

[0017] The low coefficient of friction between the ball bearings and the first carrier helps reduce the resistance to the movement of the first carrier relative to the base, thereby reducing the power consumption of the motor.

[0018] In one possible implementation, the first guide member includes a first guide sleeve and a first guide rod. The first guide rod is fixedly connected to the base, and the first guide sleeve is fixedly connected to the first sliding groove. The first guide sleeve is cylindrical and is sleeved on the first guide rod, and is slidably connected to the first guide rod. The first guide sleeve is a first limiting structure.

[0019] Understandably, the first guide sleeve, as the first limiting structure, has a better limiting effect on the first guide rod, which can reduce the risk of the first carrier falling off the first guide rod.

[0020] In one possible implementation, the motor further includes a first magnetic attractor and a third magnetic attractor. The first magnetic attractor is fixedly connected to a first carrier, and the third magnetic attractor is fixedly connected to a base. The first and third magnetic attractors are arranged opposite each other in a third direction, which is perpendicular to both the first and second directions. In the second direction, the distance L between the first magnetic attractor and the first slide groove is less than the distance L between the first magnetic attractor and the second slide groove.

[0021] Understandably, the first and third magnetic components work together to keep the first carrier, the first guide, the second guide, and the base in contact, reducing the risk of the first carrier slipping off the first and second guides.

[0022] In one possible implementation, the motor further includes a second magnetic attractor and a fourth magnetic attractor. The second magnetic attractor is fixedly connected to the first carrier, and the fourth magnetic attractor is fixedly connected to the base. The second and fourth magnetic attractors are arranged opposite each other in a third-order direction. The distance L between the second magnetic attractor and the second slide groove is less than the distance L between the second magnetic attractor and the first slide groove.

[0023] Understandably, compared to a solution where only one of the first and second magnetic suction components is provided in the motor, providing both the first and second magnetic suction components simultaneously allows both sides of the first carrier to be subjected to forces toward the base plate, reducing the problem of unstable motion posture caused by unbalanced forces on the first carrier.

[0024] In one possible implementation, the first magnetic element is subjected to a first magnetic force F1, and the second magnetic element is subjected to a second magnetic force F2, wherein the first magnetic force F1 is greater than the second magnetic force F2.

[0025] It is understandable that setting F1 to be greater than F2, meaning the first carrier experiences a greater third-direction upward constraint on the first slide side, allows the first carrier to be subjected to the main third-direction upward pressure on the first slide side, ensuring the primary guiding function of the first slide. The first slide provides more constraints on the first carrier in multiple directions (e.g., the first slide provides second-direction constraints and rotation around a third direction), ensuring the dominant effect of the first slide, which in turn ensures more stable constraints on the first carrier. This is beneficial for maintaining the balance of the first carrier during its movement relative to the base, improving the stability of the first carrier's movement, and facilitating fast and stable focusing / zooming of the camera module.

[0026] In one possible implementation, the fourth magnetic element is a second guide rod, which is magnetic. In this way, the second guide rod can not only guide the first carrier during movement but also interact with the second magnetic element to provide a second magnetic force F2. This eliminates the need for a separate fourth magnetic element, reducing the number of motor components, simplifying the motor structure, and decreasing its size.

[0027] In one possible implementation, the first carrier includes a first connecting arm, a second connecting arm, a third connecting arm, and a connecting plate. The first, second, and third connecting arms are all fixedly connected to the same side of the connecting plate and are arranged sequentially at intervals along a second direction. The first carrier is used to mount a first optical element. The first connecting arm, the second connecting arm, and the connecting plate enclose a first receiving space. The first optical element is mounted in the first receiving space. A first coil is fixedly connected to the third connecting arm. A portion of m sets of second magnet units is located between the second and third connecting arms, and m sets of first magnet units are located on the side of the third connecting arm away from the second connecting arm.

[0028] It is understandable that by setting a third connecting arm, the first coil is fixedly connected to the third connecting arm, and the third connecting arm and the second connecting arm are arranged alternately, so that the first coil can be smoothly placed in the magnetic gap.

[0029] In one possible implementation, the first magnetic chuck is fixedly connected to the end of the second connecting arm away from the connecting plate, and the first magnetic chuck is located on the side of the base plate of the first magnet unit away from the base. The third magnetic chuck is the first magnet unit.

[0030] It is understandable that setting the first magnet unit as the third magnetic attractor eliminates the need for a separate third magnetic attractor structure, which helps reduce the number of motor parts, simplify the motor structure, and reduce the size of the motor.

[0031] In one possible implementation, the first magnet unit and the second magnet unit are the first magnet unit.

[0032] In one possible implementation, the side plate includes a first support column, a second support column, a third support column, and a fourth support column. These three columns are fixedly connected to the same side of the base plate. The first and second support columns are positioned opposite each other in a first direction, as are the third and fourth support columns. The first and fourth support columns are also positioned opposite each other in a second direction, as are the second and third support columns. The base plate, the first, second, third, and fourth support columns enclose a movement space. A first carrier, a first coil, a first guide member, and a second guide member are all installed within this movement space. The motor also includes a first magnetic sheet and a second magnetic sheet, both fixedly connected between the first and second support columns. m sets of first magnetic units are fixedly connected to the first magnetic sheet, and m sets of second magnetic units are fixedly connected to the second magnetic sheet. In the second direction, the m sets of first magnetic units and m sets of second magnetic units are located between the first and second magnetic sheets.

[0033] It is understandable that by setting the first magnetic plate and the second magnetic plate, the leakage magnetic field of m groups of first magnet units and m groups of second magnet units can be reduced, and the magnetic field strength in the magnetic gap can be increased.

[0034] In one possible implementation, the length D1 of the first coil in the first direction is greater than 0.5k, where k is the length of the first magnet unit in the first direction. The distance A between the centerlines of two adjacent first coils in the first direction is less than k.

[0035] It is understandable that the first coil 4 includes a first arm and a second arm in the first direction. The length direction of the first arm can be perpendicular to the first direction, and the length direction of the second arm can also be perpendicular to the first direction. After the first coil is energized, the first arm and the second arm move in the magnetic field, cutting magnetic field lines. The first arm and the second arm are subjected to forces, and the resultant force of the two arms is approximately equal to the Ampere force on the first coil in the first direction. When current flows through the first coil, the current directions on the first arm and the second arm are different at the same time (indicated by arrows in the figure). The length D1 of the first coil in the first direction is greater than 0.5k to prevent the first arm and the second arm from being in the same magnetic field at the same time, which would cause the Ampere forces on the first arm and the second arm to cancel each other out, resulting in zero driving force of the first coil in the first direction.

[0036] The distance A between the centerlines of two adjacent first coils in the first direction is less than k. This avoids the first coil crossing three or more magnetic fields, which would render the magnetic field between the first and second arms ineffective. Since the length of the first coil in the first direction is less than k, the required installation space is smaller, which helps reduce the size of the motor.

[0037] In one possible implementation, the distance A between the centerlines of two adjacent first coils in the first direction satisfies: xnA = jk, where x and j are positive integers.

[0038] It is understandable that by setting xnA = jk, that is, xnA being an integer multiple of the length (k) of one first magnet unit / the second magnet unit in the first direction, the period of the magnetic field change within the magnetic gap is k. After n first coils are translated xnA along the first direction, the magnetic field strength and direction of the n first coils at the positions before and after the translation of xnA can be the same. If the magnitude and direction of the current on the n first coils at the positions before and after the translation can be set to be the same, the magnitude and direction of the Ampere force on the n first coils can also be the same. The period of motion of the n first coils is xnA. The relative positions of the coils and magnet units are repeated when the n first coils move xnA. Therefore, by achieving unidirectional continuous motion of the n first coils within the length range of xnA, the infinite displacement (multiple xnA lengths) of the n first coils can be achieved.

[0039] Under the coordination of a continuous magnetic field with a period of k, setting the motion period of the n coils to be an integer multiple of the magnetic field period and the current period, and passing a continuous alternating current with a period of k through the n first coils, facilitates the continuous movement of the n first coils along a first direction. Furthermore, when designing the alternating current passing through the first coils, it is sufficient to design a current of one motion period length (xnA), without needing to design the current for the longest distance the n first coils move along the first direction, thus reducing design complexity.

[0040] In one possible implementation, the first coil moves a displacement k in a first direction, and the change in the current of the first coil corresponds to one energizing cycle T.

[0041] It is understandable that the m groups of first and m groups of second magnet units form a periodically changing magnetic field along the first direction within the magnetic gap. The period of the magnetic field can be k. After a multiphase current is passed through the first coil, the first coil moves within the magnetic field of the magnetic gap, cutting magnetic field lines, and the first coil can be subjected to an Ampere force along the first direction. During the movement of the first coil, the direction of the Ampere force on the first coil is affected by both the direction of the current in the first coil at that moment and the direction of the magnetic field at the position of the first coil. To ensure that the Ampere force on the first coil is directed in a predetermined direction, the direction of the current in the first coil can be adjusted according to the magnetic field distribution at different positions during the movement of the first coil in the first direction. In other words, by adjusting the magnitude and direction of the current in the first coil according to the magnetic field strength and direction, the first coil can be subjected to a force in one direction. The displacement k of the first coil in the first direction corresponds to one energizing period T.

[0042] In one possible implementation, the current phase difference between two adjacent first coils is 2π(kA) / k.

[0043] It is understandable that when a first coil moves for one cycle, the phase difference of the current before and after the movement is: xnB = xn2π(kA) / k = 2πxn - 2πxnA / k = 2πxn - 2πj = 2π(xn - j). Here, n, x, and j are all positive integers, therefore (xn - j) is also an integer. The phase difference of a first coil moving for one cycle is exactly an integer multiple of the energizing cycle, making it easier to design the current of the first coil for one cycle. For example, the center distance A between two adjacent first coils is 0.75k. When there are two n first coils, n = 2, A = 0.75k, and the phase difference of the energizing current of the two first coils is 2π(kA) / k = 0.25 × 2π = 90°. x is 2, j is 3. The phase difference of a first coil before and after one cycle is 2π.

[0044] In one possible implementation, n is an integer multiple of 2, n adjacent first coils are supplied with two-phase currents, and the distance between the centerlines of two adjacent first coils in the first direction is A = 0.75k.

[0045] It is understandable that n is an integer multiple of 2, n adjacent first coils are supplied with two-phase current, and the distance A = 0.75k between the centerlines of two adjacent first coils in the first direction. When three-phase current is supplied to the first coil, the period of motion of the first coil can be 3k. The period of motion of the first coil is relatively small, which reduces the design difficulty. The length of the first coil in the first direction is relatively small, and the length of the first carrier in the first direction can also be relatively small.

[0046] In one possible implementation, the current flowing through the first coil is a sinusoidal current, and the phase difference between the currents flowing through two adjacent first coils is 90°.

[0047] Understandably, the first coil is a two-phase drive coil. A sinusoidal current can be passed through it, generating a sinusoidal thrust. The resultant force of the first coil drives the mover. The phase difference between two adjacent first coils is 90° (one-quarter of a energizing cycle k), and the resultant force of the first coils remains approximately constant. However, during actual motor operation, when multiple first coils move along the first direction under actual force, the force is affected by the magnetic field distribution. The magnetic field strength distribution along the first direction does not perfectly conform to a sine curve, and the resultant force of the n first coils may fluctuate slightly, for example, by no more than 10%.

[0048] During the movement of the first carrier along the first direction driven by n first coils, the combined thrust of the n first coils remains relatively stable. The force on the first carrier is roughly stable, and the acceleration of the first carrier is controllable, reducing displacement beyond the expected travel distance. When the motor drives the first optical element to move, the first carrier can move to the preset position with greater precision, avoiding the need for retraction, which is beneficial for achieving fast, accurate, and high-precision zooming / focusing of the camera module. Furthermore, since a sinusoidal current is applied to the first coil, only half a cycle of current needs to be designed when designing the AC current applied to the first coil, further reducing the design difficulty and workload of the first coil current. Compared to three-phase coils, two-phase coils are advantageous in shortening the length of the first carrier in the first direction.

[0049] In one possible implementation, n is an integer multiple of 3, n adjacent first coils are supplied with three-phase current, and the distance between the centerlines of two adjacent first coils in the first direction is A = 2k / 3.

[0050] It is understandable that when three-phase current is applied to the first coil, the rotation period of the first coil can be 2kΩ. The rotation period of the first coil is relatively small, making the design less difficult. The length of the first coil in the first direction is relatively small, and the length of the first carrier in the first direction can also be relatively small.

[0051] In one possible implementation, the current flowing through the first coil is a sinusoidal current, and the phase difference between the currents flowing through two adjacent first coils is 120°.

[0052] It is understandable that A = 2k / 3, and a sinusoidal current with a phase difference of 120° can be passed through the adjacent first coil. The phase difference of the current matches the distance between the center lines of the adjacent first coils in the first direction.

[0053] In one possible implementation, the length of the first magnet unit in group m in the first direction is greater than or equal to 10 millimeters.

[0054] It is understandable that the length of the m-group first magnetic units along the first direction can be designed as needed. The length and number of the first magnetic units in the first direction can be adjusted according to the required length of the magnetic field in that direction to achieve the target length. The length of the m-group first magnetic units in the first direction is greater than or equal to 10 mm, the length of the magnetic field within the magnetic gap in the first direction is greater than or equal to 10 mm, and the first carrier can move along the magnetic field within the magnetic gap in the first direction under the drive of the first coil, resulting in a relatively long travel distance for the first carrier.

[0055] In one possible implementation, the motor further includes a first tunneling magnetoresistive sensor and a magnetic grating. The first tunneling magnetoresistive sensor is fixed to a first carrier and spaced apart from the first coil. The magnetic grating is fixed to a base and spaced apart from the first magnet unit and the second magnet unit. The first tunneling magnetoresistive sensor and the magnetic grating are arranged opposite to each other.

[0056] Understandably, the first tunnel magnetoresistive sensor can be used in conjunction with a magnetic grating to measure the motion displacement of the first carrier.

[0057] In one possible implementation, the motor further includes a second carrier, a third guide, and a fourth guide. The second carrier is movably connected to the base and is spaced apart from the first carrier in a first direction. The second carrier has a third groove and a fourth groove, the extension direction of the third groove being parallel to the first direction, and the extension direction of the fourth groove being parallel to the first direction. The third groove and the fourth groove are spaced apart along the second direction. The third guide is disposed in the third groove, and the fourth guide is disposed in the fourth groove. The motor also includes w second coils, which are fixedly connected to the side of the second carrier. The second coils are located within the magnetic gap and face m sets of first magnet units and m sets of second magnet units. When the second coils are energized, they are used to drive the second carrier to move relative to the base in a first direction, where w is an integer greater than or equal to.

[0058] It is understood that the motor includes a first carrier and a second carrier. Thus, when the motor is used in a camera module, the first carrier can be used to mount a first optical element, and the second carrier can be used to mount a second optical element. When both the first and second optical elements are lens groups, the motor can be used to drive the first optical element to move to achieve a focusing function, or to drive the second optical element to move to achieve a zoom function, or to drive both the first and second optical elements to move simultaneously to achieve a focusing / zoom function.

[0059] In one possible implementation, the third groove has multiple third limiting structures arranged at intervals along a first direction, and the third guide abuts against the third limiting structures. In the second direction, the distance between the second coil and the third groove is less than the distance between the second coil and the fourth groove.

[0060] It is understood that the third slide groove has multiple third limiting structures spaced apart along the first direction, and the third guide member abuts against the first limiting structure. The third guide member and the third slide groove have multiple contact points in the first direction. These multiple third limiting structures can constrain the second carrier's degree of freedom of rotation about a third direction, reducing the risk of the second carrier rotating about an axis parallel to the third direction during movement, thus improving the stability of the second carrier's motion. The third slide groove of the second carrier can be located on the side of the second carrier closer to the second coil. It is understood that arranging the second coil close to the third slide groove of the second carrier reduces the lever arm of the second carrier's driving force, thereby preventing the second carrier from rotating too much about the Y-axis (third direction), causing the groove surface of the third slide groove to detach from the third guide member, resulting in unstable posture (upward drift) and tilting of the second carrier.

[0061] In one possible implementation, both the first guide member and the third guide member are first guide rods.

[0062] It is understandable that the first guide member and the third guide member can be the first guide rod, allowing the first slide groove and the third slide groove to be slidably connected to the first guide rod. This also allows the first limiting structure of the first carrier and the third limiting structure of the second carrier to be slidably connected to the first guide rod. This helps to reduce the eccentricity problem of the optical axes of the first optical element and the second optical element when the first carrier and the second carrier respectively carry the first optical element and the second optical element in motion.

[0063] In one possible implementation, the motor further includes a first electrical connector comprising a first end, a second end, a third end, a first connecting segment, and a second connecting segment. The first connecting segment is fixedly connected between the first end and the second end, and the second connecting segment is fixedly connected between the first end and the third end. The first end is fixedly connected to a base, the second end is fixedly connected to a first carrier and electrically connected to a first coil, and the third end is fixedly connected to a second carrier and electrically connected to a second coil. The first connecting segment and the second connecting segment are deformable.

[0064] In this way, the first electrical connector only needs to be provided with one end of the electrical connection to enable power supply to the devices on the first and second carriers.

[0065] In one possible implementation, the first connecting segment is U-shaped. This allows the first connecting segment to stretch or bend as the first carrier moves back and forth in the first direction. The U-shaped first connecting segment provides a reliable electrical connection for the large-stroke movement of the first carrier. The first electrical connector is less prone to disconnection from the first coil on the first carrier.

[0066] Secondly, embodiments of this application provide a camera module. The camera module includes a first optical element, a photosensitive element, and a motor. The photosensitive element is located on the light-emitting side of the first optical element, and the first optical element is mounted on a first carrier of the motor. It is understood that the motor of the camera module can achieve rapid, quiet, and large-stroke displacement, and the camera module has high imaging quality, thereby improving the shooting experience.

[0067] Thirdly, embodiments of this application provide an electronic device. The electronic device includes a housing and a camera module, with the camera module mounted on the housing. This electronic device offers a superior shooting experience. Attached Figure Description

[0068] To illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0069] Figure 1 is a schematic diagram of one embodiment of the electronic device provided in this application;

[0070] Figure 2 is a partial cross-sectional view of the electronic device shown in Figure 1 on line AA in one embodiment;

[0071] Figure 3 is a structural schematic diagram of one embodiment of the motor shown in Figure 2;

[0072] Figure 4 is an exploded view of one embodiment of the motor shown in Figure 3;

[0073] Figure 5 is a structural schematic diagram of one embodiment of the top cover shown in Figure 4 from another angle;

[0074] Figure 6 is a partially exploded view of one embodiment of the base shown in Figure 4;

[0075] Figure 7 is an assembly schematic diagram of one embodiment of the first guide rod, second guide rod and base shown in Figure 4;

[0076] Figure 8 is a schematic diagram of the structure shown in Figure 7 from another angle;

[0077] Figure 9 is an assembly schematic diagram of one embodiment of the magnetic grating, first guide rod, second guide rod and base shown in Figure 4;

[0078] Figure 10 is a structural schematic diagram of one embodiment of the first magnetic track shown in Figure 4;

[0079] Figure 11 is a partially exploded structural diagram of one embodiment of the first magnetic track shown in Figure 10;

[0080] Figure 12 is an assembly schematic diagram of one embodiment of the first magnetic rail, the second magnetic rail, and the base shown in Figure 4;

[0081] Figure 13 is a schematic diagram of the structure shown in Figure 12 from another angle;

[0082] Figure 14 is a cross-sectional view of one embodiment of the m groups of first magnet units and m groups of second magnet units shown in Figure 12 from another angle.

[0083] Figure 15 is a structural schematic diagram of one embodiment of the first carrier shown in Figure 4;

[0084] Figure 16 is a structural schematic diagram of the first carrier shown in Figure 15 from another angle;

[0085] Figure 17 is an assembly schematic diagram of one embodiment of the first carrier, first guide rod, second guide rod, and base shown in Figure 4;

[0086] Figure 18 is an assembly schematic diagram of one embodiment of the first carrier, second carrier, first guide rod, second guide rod, and base shown in Figure 4;

[0087] Figure 19 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at BB;

[0088] Figure 20 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at CC;

[0089] Figure 21 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at DD;

[0090] Figure 22 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at EE;

[0091] Figure 23 is a partial structural diagram of the structure shown in Figure 18 from another angle;

[0092] Figure 24 is a structural schematic diagram of one embodiment of the electrical connection assembly 8 shown in Figure 4;

[0093] Figure 25 is a structural schematic diagram of the electrical connection assembly 8 shown in Figure 24 from another angle;

[0094] Figure 26 is an assembly schematic diagram of one embodiment of the first electrical connector, the second electrical connector, and the base shown in Figure 4;

[0095] Figure 27 is a schematic diagram of the structure shown in Figure 26 from another angle;

[0096] Figure 28 is an assembly schematic diagram of one embodiment of the first electrical connector, second electrical connector, first carrier, second carrier, and base shown in Figure 4;

[0097] Figure 29 is a partial structural diagram of the structure shown in Figure 28 from another angle;

[0098] Figure 30 is an assembly schematic diagram of one embodiment of the first coil, second coil, electrical connection assembly, first carrier, second carrier, and base shown in Figure 4;

[0099] Figure 31a is an assembly schematic diagram of one embodiment of the electrical connection component and driver chip shown in Figure 4;

[0100] Figure 31b is a partial cross-sectional view of one embodiment of the structure shown in Figure 30 at FF;

[0101] Figure 32 is an assembly diagram of one embodiment of the partial structure shown in Figure 4;

[0102] Figure 33 is a schematic diagram of the structure shown in Figure 32 from another angle;

[0103] Figure 34 is a schematic diagram of one embodiment of the first coil, second coil, m groups of first magnet units, and m groups of second magnet units shown in Figure 33;

[0104] Figure 35 is an assembly diagram of one embodiment of the partial structure shown in Figure 4;

[0105] Figure 36 is an assembly diagram of one embodiment of the partial structure shown in Figure 4;

[0106] Figure 37 is a partial cross-sectional view of one embodiment of the structure shown in Figure 36 at GG;

[0107] Figure 38 is a partial cross-sectional view of one embodiment of the structure shown in Figure 36 at HH;

[0108] Figure 39 is a partial cross-sectional view of one embodiment of the structure shown in Figure 36 at point II;

[0109] Figure 40 is a schematic diagram of the assembly of one embodiment of n first coils and m groups of first magnet units;

[0110] Figure 41 is a schematic diagram of one embodiment of the sinusoidal current supplied when the two first coils 4 move in the first direction;

[0111] Figure 42a is a simulation diagram of the forces acting on the two first coils as they move in the first direction when a sinusoidal current with a 90° phase difference is applied.

[0112] Figure 42b is a simulation diagram of the forces acting on the two first coils moving in the first direction when the same constant current is applied;

[0113] Figure 43 is a schematic diagram of another implementation of the n first coils and first magnetic rails shown in Figure 4;

[0114] Figure 44 is a schematic diagram of another embodiment of the n first coils and first magnetic rails shown in Figure 4;

[0115] Figure 45 is a schematic diagram of another embodiment of the first magnetic track shown in Figure 4;

[0116] Figure 46 is a schematic diagram of another embodiment of the first magnetic track shown in Figure 4;

[0117] Figure 47 is a cross-sectional view of one embodiment of the m groups of first magnet units and m groups of second magnet units shown in Figure 12 from another angle.

[0118] Figure 48 is a partially exploded view of another embodiment of the motor shown in Figure 3;

[0119] Figure 49 is a schematic diagram of one embodiment of the base shown in Figure 48;

[0120] Figure 50 is a schematic diagram of one embodiment of the second carrier shown in Figure 48;

[0121] Figure 51 is a schematic diagram of the structure shown in Figure 50 from another angle;

[0122] Figure 52 is an assembly schematic diagram of one embodiment of the partial structure shown in Figure 48;

[0123] Figure 53 is a partial cross-sectional view of one embodiment of the structure shown in Figure 52 at JJ;

[0124] Figure 54 is a partial cross-sectional view of one embodiment of the structure shown in Figure 52 at point KK;

[0125] Figure 55 is a partial cross-sectional view of one embodiment of the structure shown in Figure 52 at LL;

[0126] Figure 56 is a partially exploded view of another embodiment of the motor shown in Figure 3.

[0127] Figure 57 is a schematic diagram of one embodiment of the second carrier shown in Figure 56;

[0128] Figure 58 is a schematic diagram of the structure shown in Figure 57 from another angle;

[0129] Figure 59 is an assembly schematic diagram of one embodiment of the third guide sleeve, fourth guide sleeve, second carrier, first guide rod and second guide rod shown in Figure 56;

[0130] Figure 60 is a schematic diagram of the structure shown in Figure 59 from another angle;

[0131] Figure 61 is an assembly schematic diagram of one embodiment of the partial structure shown in Figure 56;

[0132] Figure 62 is a partial cross-sectional view of one embodiment of the structure shown in Figure 61 at MM;

[0133] Figure 63 is a partial cross-sectional view of one embodiment of the structure shown in Figure 61 at NN;

[0134] Figure 64 is a partial cross-sectional view of one embodiment of the structure shown in Figure 61 at point OO;

[0135] Figure 65 is a partially exploded view of another embodiment of the motor shown in Figure 3.

[0136] Figure 66 is an assembly schematic diagram of one embodiment of the first carrier and the first coil shown in Figure 65;

[0137] Figure 67 is an assembly schematic diagram of one embodiment of the partial structure shown in Figure 65;

[0138] Figure 68 is a schematic diagram of the structure shown in Figure 67 from another angle;

[0139] Figure 69 is a partial cross-sectional view of one embodiment of the structure shown in Figure 68 at PP;

[0140] Figure 70 is a partial cross-sectional view of one embodiment of the structure shown in Figure 68 at QQ. Detailed Implementation

[0141] For ease of understanding, the English abbreviations and related technical terms used in the embodiments of this application will be explained and described below.

[0142] Lens: A lens is a component that uses the principle of refraction to allow light from a scene to pass through it and form a sharp image on the focal plane. A lens may contain one or more lenses, which can be concave or convex lenses.

[0143] Optical axis: The direction in which light rays travel through an optical system, referenced to the principal ray at the center of the field of view. For symmetrical transmission systems, it generally coincides with the rotation center line of the optical system. For off-axis and reflective systems, the optical axis may appear as a broken line.

[0144] Focusing: Focusing, also known as light focusing or focusing, is the process of changing the position of the object distance and the camera lens distance through the camera's focusing mechanism to make the subject appear sharp. Digital cameras typically have multiple focusing modes, such as autofocus, manual focus, or multiple focus modes.

[0145] Autofocus: Autofocus is a method that uses the principle of light reflection from an object to receive the reflected light from the camera's sensor (such as a charge-coupled device, CCD), process the data through a computer, and drive the motorized focusing mechanism to achieve the desired focus.

[0146] Heilbeck magnets: By combining magnets of three directions, stronger magnetic thrust is achieved, but the required anti-overturning torque also increases accordingly.

[0147] TSA: Trace Suspension Assenbly. A TSA is a component that integrates a spring and signal cable into one piece.

[0148] The embodiments of this application are described below with reference to the accompanying drawings. The embodiments described herein with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0149] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" 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 should be understood that in this application, "electrical connection" can be understood as components physically contacting and conducting electricity; it can also be understood as a form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Connection" and "connected" can both refer to a mechanical connection relationship or a physical connection relationship. For example, A connecting to B or A being connected to B can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0150] Furthermore, the term "fixed" in this document should be interpreted broadly. For example, "fixed" can mean direct fixing or indirect fixing through an intermediate medium. "Fixed" refers to connections where the relative positional relationship remains unchanged after connection. The directional terms used in the embodiments of this application, such as "upper" and "lower," 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. "Multiple" refers to two or more.

[0151] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0152] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0153] Furthermore, the limitations on relative positional relationships mentioned in the embodiments of this application, such as parallel, perpendicular, and aligned, are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallelism, perpendicularity, and alignment are all 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.

[0154] Figure 1 is a schematic diagram of one embodiment of the electronic device 1000 provided in this application. Figure 2 is a partial cross-sectional view of one embodiment of the electronic device 1000 shown in Figure 1 along line AA.

[0155] Electronic device 1000 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), camera, personal computer, laptop computer, in-vehicle equipment, video surveillance setup, wearable device, augmented reality (AR) glasses, AR headset, virtual reality (VR) glasses, or VR headset, or any other device with camera functionality. The electronic device 1000 in the embodiment shown in Figure 1 is illustrated using a mobile phone as an example.

[0156] As shown in Figures 1 and 2, the electronic device 1000 may include a camera module 100, a housing 200, and a screen 300. The camera module 100 can be a rear-facing camera module or a front-facing camera module. This application uses a rear-facing camera module 100 as an example for description. It should be noted that Figures 1, 2, and the related figures below only schematically show some components included in the electronic device 1000; the actual shape, size, position, and structure of these components are not limited by Figures 1, 2, and the figures below. In other embodiments, when the electronic device 1000 is a device of other forms, the electronic device 1000 may not include the screen 300.

[0157] For ease of description, the width direction of electronic device 1000 is defined as the X-axis. The thickness direction of electronic device 1000 is defined as the Y-axis. The length direction of electronic device 1000 is defined as the Z-axis. It can be understood that the coordinate system settings of electronic device 1000 can be flexibly set according to specific practical needs.

[0158] In some embodiments, the housing 200 may include a frame 2001 and a back cover 2002. The back cover 2002 is fixedly connected to the frame 2001. For example, the back cover 2002 may be fixedly connected to the frame 2001 by adhesive. The back cover 2002 may also be integrally formed with the frame 2001, that is, the back cover 2002 and the frame 2001 are a single integral structure.

[0159] Alternatively, the screen 300 can be located on the side of the bezel 2001 away from the back cover 2002. In this case, the screen 300 and the back cover 2002 are located on opposite sides of the bezel 2001. The screen 300, the bezel 2001, and the back cover 2002 together enclose 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 the battery 700, a receiver, or a microphone.

[0160] In some implementations, screen 300 can be used to display images, etc. Screen 300 can be a flat screen or a curved screen. The display screen of screen 300 can be an organic light-emitting diode (OLED) display screen, or an active-matrix organic light-emitting diode (AMOLED) display screen, or a liquid crystal display (LCD), etc.

[0161] In some embodiments, the electronic device 1000 may further include an image processor 400. The image processor 400 may be located inside the electronic device 1000. The image processor 400 is communicatively connected to the camera module 100, and is used to acquire and process image data from the camera module 100. The communication connection between the camera module 100 and the image processor 400 may include data transmission via electrical connections such as wiring, or data transmission may be achieved through coupling or other methods. It is understood that the camera module 100 and the image processor 400 may also be connected via other methods capable of data transmission.

[0162] The image processor 400 optimizes digital image signals and transmits the processed signals to the screen 300. The image processor 400 can be an image processing chip or a digital signal processing chip. Its function is to transmit the data obtained by the image sensor to the central processing unit in a timely and fast manner and refresh the image sensor. Therefore, the quality of the image processor 400 chip directly affects the image quality (such as color saturation, sharpness, etc.).

[0163] In some embodiments, the electronic device 1000 may further include an analog-to-digital converter 500 connected between the camera module 100 and the image processor 400. The analog-to-digital converter 500 is used to convert the signal generated by the camera module 100 into a digital image signal and transmit it to the image processor 400.

[0164] In some embodiments, the electronic device 1000 may further include a memory 600, which is communicatively connected to an image processor 400. The image processor 400 processes the digital image signal before transmitting the image to the memory 600, so that the image can be retrieved from the memory 600 and displayed on the screen 300 whenever it is needed to view the image later. In some embodiments, the image processor 400 may also compress the processed digital image signal before storing it in the memory 600, thereby saving memory space.

[0165] In some embodiments, the electronic device 1000 may also include a battery 700. The battery 700 can supply power to various devices of the electronic device 1000.

[0166] For example, the camera module 100 can be located inside the electronic device 1000. For instance, the camera module 100 can be fixedly connected to the side of the screen 300 facing the rear cover 2002. The rear cover 2002 can have a light-transmitting hole 2003. The shape of the light-transmitting hole 2003 is not limited to the circle shown in Figure 1. The light-transmitting hole 2003 connects the interior of the electronic device 1000 to the exterior of the electronic device 1000. Light from outside the electronic device 1000 can enter the interior of the electronic device 1000 through the light-transmitting hole 2003. The camera module 100 can capture the ambient light entering the interior of the electronic device 1000.

[0167] For example, the image processor 400, analog-to-digital converter 500, memory 600, and battery 700 may also be located inside the electronic device 1000. The image processor 400, analog-to-digital converter 500, memory 600, and battery 700 are illustrated in Figure 1 by dashed boxes.

[0168] In some embodiments, the back cover 2002 may include a light-transmitting lens that can be mounted on the light-transmitting hole 2003 to allow light to pass through and to provide dust and water protection.

[0169] It is understood that the installation position of the camera module 100 in the electronic device 1000 of the embodiment shown in FIG1 is merely illustrative, and this application does not strictly limit the installation position of the camera module 100. In some other embodiments, the camera module 100 may also be installed in other locations of the electronic device 1000, for example, the camera module 100 may be installed in the upper middle or upper right corner of the back of the electronic device 1000. In some other embodiments, the electronic device 1000 may include a terminal body and an auxiliary component that can rotate, move or be detached relative to the terminal body, and the camera module 100 may also be disposed on the auxiliary component. Furthermore, the size, number and position of the image processor 400, analog-to-digital converter 500, and memory 600 shown in FIG1 are merely illustrative representations and can be adjusted as needed; this application does not limit them in this regard.

[0170] As shown in Figure 2, the camera module 100 may include a motor 10, a first optical element 30, and a photosensitive component 20. The photosensitive component 20 may be located on the light-emitting side of the first optical element 30. Light can pass through the first optical element 30 and illuminate the photosensitive surface of the photosensitive component 20. The photosensitive component 20 can be used to convert the optical image into an electrical signal, i.e., an analog image signal, and transmit it to an analog-to-digital converter 500, so that the analog-to-digital converter 500 can convert it into a digital image signal for the image processor 400. The motor 10 can be used to drive the first optical element 30 to move.

[0171] In some embodiments, the camera module 100 can be a periscope camera module 100 (i.e., the optical axis direction of the camera module 100 can be any direction on the YX plane). This results in lower heat generation for the camera module 100, making it more suitable for use in thin electronic devices 1000. In other embodiments, the camera module 100 can also be a vertical camera module 100 (i.e., the optical axis direction of the camera module 100 can be parallel to the Y-axis direction). For example, the camera module 100 can be equipped with an optical path folding element 50 to achieve changes in the optical path.

[0172] In some embodiments, the camera module 100 may further include a second optical element 40. The second optical element 40 may be located on the light-incident side of the first optical element 30. For example, the first optical element 30 may be a lens group. The second optical element 40 may be a lens group. The motor 10 may be used to drive the first optical element 30 to move to achieve a focusing function, or to drive the second optical element 40 to move to achieve a zoom function, or to drive both the first optical element 30 and the second optical element 40 to move to achieve a focusing / zoom function.

[0173] Understandably, compared to traditional technical solutions where the camera module 100 achieves zoom within a specific range by switching between multiple lenses, multiple lenses occupy a large space and have high efficiency. The motor 10 of this application can be used to drive one or more optical elements to move continuously, thereby enabling continuous focusing and zooming functions of the camera module 100. For example, the motor 10 can drive the first optical element 30 and the second optical element 40 to move continuously, thus achieving high-magnification continuous zoom of the camera module 100, resulting in better performance of the camera module 100.

[0174] In other embodiments, the first optical element 30 or the second optical element 40 may also be a prism.

[0175] In some embodiments, the displacement of the first optical element 30 driven by the motor 10 can be greater than or equal to 10 millimeters (mm). In this way, when the first optical element 30 is a lens, the camera module 100 can achieve a wider range of focusing.

[0176] In some embodiments, the camera module 100 may include two motors 10, which are used to drive the first optical element 30 and the second optical element 40 to move, respectively.

[0177] For example, the photosensitive assembly 20 may include a filter 210 and a photosensitive element 220. The photosensitive element 220 is located on the image side of the filter 210. Light can pass sequentially through the optical path folding element 50, the second optical element 40, the first optical element 30, and the filter 210 to illuminate the photosensitive surface of the photosensitive element 220. The photosensitive surface of the photosensitive element 220 is also the photosensitive surface of the photosensitive assembly 20.

[0178] Photosensitive element 220 can be used to convert light signals into electrical signals. Photosensitive element 220 (also called an image sensor) can be a semiconductor chip containing hundreds of thousands to millions of photodiodes on its surface, which generate electrical charges when exposed to light. Photosensitive element 220 can be a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) device. CCDs are made using a highly sensitive semiconductor material that converts light into electrical charges. CCDs consist of many photosensitive units, typically in megapixel units. When the surface of a CCD is exposed to light, each photosensitive unit reflects a charge onto the component; the signals generated by all the photosensitive units are added together to form a complete image. Complementary metal-oxide semiconductors primarily utilize semiconductors made of silicon and germanium, allowing N-type (negatively charged) and P-type (positively charged) semiconductors to coexist on the CCD. The current generated by these complementary effects can be recorded and interpreted by the processing chip as an image.

[0179] The filter 210 can be used to filter out unwanted wavelengths of light, preventing the photosensitive element 220 from producing false colors or ripples, thereby improving its effective resolution and color reproduction. For example, the filter 210 can be an infrared filter 210. In some other embodiments, the camera module 100 may also omit the separate filter 210 structure, instead achieving the filtering function by surface treatment or material treatment of some optical elements (e.g., the first optical element 30, the second optical element 40). This application does not strictly limit the specific embodiments of the structures or components used to achieve the filtering function.

[0180] The structure of the electronic device 1000 and the camera module 100 has been described in detail above. The following section will introduce several implementation methods of the motor 10 in conjunction with the relevant accompanying drawings. It is understood that, for the sake of simplicity, when the drawings include the same structure, some structures may be labeled, some may be left unlabeled, or all structures may be labeled. The following section will describe the structure of the motor 10 by taking the example of the motor 10 simultaneously driving the first optical element 30 and the second optical element 40.

[0181] Figure 3 is a structural schematic diagram of one embodiment of the motor 10 shown in Figure 2. Figure 4 is an exploded schematic diagram of one embodiment of the motor 10 shown in Figure 3.

[0182] As shown in Figures 3 and 4, the motor 10 may include a base 1, a top cover 98, a first carrier 2, a second carrier 3, n first coils 4, a first guide 41, a second guide 42, w second coils 5, a third guide 51, a fourth guide 52, a first magnetic track 61, a second magnetic track 62, a magnetic grating 71, a first tunneling magnetoresistive sensor 72, a second tunneling magnetoresistive sensor 73, an electrical connection assembly 8, and a driver chip 99 (IC). Wherein, n and m are integers greater than or equal to 2, m is greater than n, and w is an integer greater than or equal to 1.

[0183] For example, n first coils 4 and first tunneling magnetoresistive sensors 72 can all be fixedly connected to the first carrier 2. w second coils 5 and second tunneling magnetoresistive sensors 73 can all be fixedly connected to the second carrier 3. The first magnetic rail 61, the second magnetic rail 62, and the magnetic grating 71 can all be fixedly connected to the base 1. The n first coils 4 can cooperate with the first magnetic rail 61 and the second magnetic rail 62 to provide driving force to the first carrier 2. Under the action of the driving force, the first carrier 2 can achieve directional movement relative to the base 1 through the first guide member 41 and the second guide member 42. The first tunneling magnetoresistive sensor 72 can cooperate with the magnetic grating 71 to measure the displacement of the first carrier 2. The w second coils 5 can cooperate with the first magnetic rail 61 and the second magnetic rail 62 to provide driving force to the second carrier 3. Under the action of the driving force, the second carrier 3 can achieve directional movement relative to the base 1 through the third guide member 51 and the fourth guide member 52. The second tunneling magnetoresistive sensor 73 can cooperate with the magnetic grating 71 to measure the displacement of the second carrier 3. The electrical connection component 8 can be used for electrical signal transmission of devices on the first carrier 2 and the second carrier 3. The driving chip 99 can be used to control and adjust the driving current signals of the first coil 4 and the second coil 5 according to the movement position of the first carrier 2 and the second carrier 3.

[0184] It is understood that there can be various implementations of the first guide member 41, the second guide member 42, the third guide member 51, and the fourth guide member 52. For example, in the embodiments shown in Figures 3 and 4, the first guide member 41, the second guide member 42, the third guide member 51, and the fourth guide member 52 can be guide rods. Exemplarily, the motor 10 may include a first guide rod 91 and a second guide rod 92. The first guide member 41 may be a part of the first guide rod 91. The third guide member 51 may be a part of the first guide rod 91. The second guide member 42 may be a part of the second guide rod 92. The fourth guide member 52 may be a part of the second guide rod. The various components of the motor 10 will be described in detail below with reference to the accompanying drawings; further details will not be repeated here.

[0185] In some embodiments, the base 1 and the top cover 98 can enclose a receiving space 101, in which the first carrier 2, the second carrier 3, n first coils 4, the first guide 41, the second guide 42, w second coils 5, the third guide 51, the fourth guide 52, the first magnetic rail 61, the second magnetic rail 62, the magnetic grating 71, the first tunneling magnetoresistive sensor 72, the second tunneling magnetoresistive sensor 73, the electrical connection assembly 8, and the driver chip 99 (IC) can all be mounted in the receiving space 101. The base 1 and the top cover 98 can serve as the housing of the motor 10, protecting the internal components of the motor 10.

[0186] Figure 5 is a structural schematic diagram of one embodiment of the top cover 98 shown in Figure 4 from another angle.

[0187] As shown in Figure 5, the upper cover 98 may include a top plate 981 and a side plate 982, with the side plate 982 fixedly connected to the periphery of the top plate 981. The side plate 982 and the top plate 981 can form a receiving groove 9801. For example, the side plate 982 may include a first side plate 9821, a second side plate 9822, a third side plate 9823, and a fourth side plate 9824. The first side plate 9821, second side plate 9822, third side plate 9823, and fourth side plate 9824 are all fixedly connected to the top plate 981. The first side plate 9821 and the third side plate 9823 may be spaced apart and opposite to each other along a first direction. The second side plate 9822 and the fourth side plate 9824 may be spaced apart and opposite to each other along a second direction. The two ends of the first side plate 9821 may be fixedly connected between the third side plate 9823 and the fourth side plate 9824. The two ends of the third side plate 9823 can be fixedly connected between the third side plate 9823 and the fourth side plate 9824. The first direction and the second direction intersect. For example, the first direction can be parallel to the Z-axis direction, and the second direction can be parallel to the Y-axis direction.

[0188] For example, the first side plate 9821 may be provided with a first through hole 9825. The third side plate 9823 may be provided with a second through hole 9826. Both the first through hole 9825 and the second through hole 9826 are connected to the receiving groove 9801. The first through hole 9825 and the second through hole 9826 can be used to allow light to pass through.

[0189] Figure 6 is a partially exploded view of one embodiment of the base 1 shown in Figure 4.

[0190] As shown in Figure 6, the base 1 may include a base body 11 and a support plate 12. The support plate 12 may be detachably connected to the base body 11.

[0191] In some embodiments, the base body 11 may include a first support column 111, a second support column 112, a third support column 113, a fourth support column 114, and a base plate 115. The first support column 111, second support column 112, third support column 113, and fourth support column 114 may be fixedly connected to the periphery of the base plate 115. The first support column 111 and the second support column 112 may be spaced apart and opposite to each other along a first direction. The third support column 113 and the fourth support column 114 may be spaced apart and opposite to each other along the first direction. The first support column 111 and the fourth support column 114 may be spaced apart and opposite to each other along a second direction. The second support column 112 and the third support column 113 may be spaced apart and opposite to each other along a second direction.

[0192] In some embodiments, the first support post 111 may be provided with a first mounting hole 1111. The second support post 112 may be provided with a second mounting hole 1121. The third support post 113 may be provided with a third mounting hole 1131. The fourth support post 114 may be provided with a fourth mounting hole 1141.

[0193] In some embodiments, the support plate 12 is detachably connected to the base body 11. The support plate 12 can be used to carry the electrical connection assembly 8 (as shown in FIG. 4). Exemplarily, the support plate 12 can be connected between the third support post 113 and the fourth support post 114. In this way, when assembling the devices on the support plate 12, they can be assembled separately with the support plate 12, and then the support plate 12 is assembled to the base body 11. The devices on the support plate 12 are less likely to interfere with the assembly of the devices on the base body 11, and the assembly difficulty is reduced. In addition, the assembly of the devices on the support plate 12 and the assembly of the devices on the base body 11 can be carried out simultaneously, which is beneficial to improving assembly efficiency. In other embodiments, the support plate 12 can also be connected between the first support post 111 and the second support post 112.

[0194] In some embodiments, the base body 11 can be a single structural component. This means that the two components are integrally formed, meaning that during the formation of one of the components, that component is connected to the other component without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections). For example, the base plate 115, the first support column 111, the second support column 112, the third support column 113, and the fourth support column 114 can be integrally formed using injection molding. This results in stronger connections between the base plate 115, the first support column 111, the second support column 112, the third support column 113, and the fourth support column 114.

[0195] In some embodiments, the base body 11 may further include a first sidewall 116. The first sidewall 116 may be fixedly connected to the periphery of the base plate 115 and fixedly connected between the third support column 113 and the fourth support column 114. The first sidewall 116 is located on the side of the support plate 12 closest to the base plate 115. It is understood that the base plate 115, the first sidewall 116, the first support column 111, the second support column 112, the third support column 113, and the fourth support column 114 may together enclose the movement space 1001.

[0196] In some embodiments, the base 1 may be provided with a mounting groove 1161. The opening of the mounting groove 1161 may face the movement space 1001. Exemplarily, the mounting groove 1161 may be located on the first sidewall 116 of the base body 11.

[0197] In some embodiments, the support plate 12 may include a first portion 121, a second portion 122, a third portion 123, a fourth portion 124, and a fifth portion 125. The first portion 121 may be generally plate-shaped and fixedly connected between the third support column 113 and the fourth support column 114. The second portion 122, the third portion 123, the fourth portion 124, and the fifth portion 125 are all fixedly connected to the side of the first portion 121 facing the movement space 1001. The second portion 122 and the third portion 123 are arranged opposite each other in a first direction and spaced apart, with the second portion 122 located on the side of the third portion 123 closer to the third support column 113. The fourth portion 124 and the third portion 123 may be arranged opposite each other in a third direction and spaced apart. The third direction is perpendicular to the first direction and perpendicular to the second direction. In other words, the third portion 123 may be located on the side of the fourth portion 124 closer to the first sidewall 116 of the base 1. The fourth portion 124 and the second portion 122 may be arranged opposite each other in the first direction and spaced apart. A portion of the fifth part 125 may be spaced apart from and opposite to the second part 122 on a third-party upward direction. A portion of the fifth part 125 may be spaced apart from and opposite to the fourth part 124 on a third-party upward direction. The fourth part 124 and the second part 122 enclose a first gap 126. The second part 122 and the fifth part 125 enclose a second gap 127. The fourth part 124 and the fifth part 125 may enclose a third gap 128. The fourth part 124 and the third part 123 may enclose a fourth gap 129.

[0198] In some embodiments, both the second portion 122 and the third portion 123 may include arc segments. The arc segment of the second portion 122 may protrude toward one side of the third support column 113. The arc segment of the third portion 123 may protrude toward one side of the fourth support column 114.

[0199] In other embodiments, one or more of the second portion 122, the third portion 123, the fourth portion 124, and the fifth portion 125 of the carrier plate 12 may be selectively provided.

[0200] It is understood that the support plate 12, the first support column 111, the second support column 112, the third support column 113, the fourth support column 114, and the first side wall 116 can constitute the side plate 117 of the base 1. The side plate 117 can be fixedly connected to the periphery of the base plate 115, and the side plate 117 and the base plate 115 can enclose the movement space 1001. In addition, the support plate 12, the first support column 111, the second support column 112, the third support column 113, the fourth support column 114, and the first side wall 116 can be selectively provided in part or in all of them as needed.

[0201] Figure 7 is an assembly schematic diagram of one embodiment of the first guide rod 91, the second guide rod 92, and the base 1 shown in Figure 4. Figure 8 is a structural schematic diagram of the structure shown in Figure 7 from another angle.

[0202] As shown in Figures 6, 7, and 8, the first guide rod 91 and the second guide rod 92 can be fixedly connected to the base 1 at intervals along the second direction. The length directions of the first guide rod 91 and the second guide rod 92 can both be parallel to the first direction. It is understood that, due to assembly errors or manufacturing precision, in the actual product, the length direction of the first guide rod 91 and the first direction are allowed to have an angle of less than 10°. The length direction of the second guide rod 92 and the first direction are also allowed to have an angle of less than 10°.

[0203] In some embodiments, the two ends of the first guide rod 91 can be fixedly connected to the first support post 111 and the second support post 112, respectively. The two ends of the second guide rod 92 can be fixedly connected to the third support post 113 and the fourth support post 114, respectively. Exemplarily, the two ends of the first guide rod 91 can be fixedly connected to the first mounting hole 1111 and the second mounting hole 1121, respectively. The two ends of the second guide rod 92 can be fixedly connected to the third mounting hole 1131 and the fourth mounting hole 1141, respectively.

[0204] Figure 9 is an assembly schematic diagram of one embodiment of the magnetic grating 71, the first guide rod 91, the second guide rod 92 and the base 1 shown in Figure 4.

[0205] As shown in Figure 9, the magnetic grating 71 can be fixedly connected to the base 1. Exemplarily, the magnetic grating 71 can be fixed within the mounting groove 1161 of the first sidewall 116. In other embodiments, the magnetic grating 71 can also be fixedly connected to the surface of the base plate 115 facing the motion space 1001. In this case, the base body 11 may not have the first sidewall 116.

[0206] In some embodiments, the magnetic grating 71 may include a plurality of N (north) pole magnets and a plurality of S (south) pole magnets. The plurality of N pole magnets and the plurality of S pole magnets are arranged alternately in sequence along a first direction to form a periodically changing magnetic field.

[0207] Figure 10 is a structural schematic diagram of one embodiment of the first magnetic track 61 shown in Figure 4. Figure 11 is a partially exploded structural schematic diagram of one embodiment of the first magnetic track 61 shown in Figure 10.

[0208] As shown in Figures 10 and 11, the first magnetic track 61 may include a first magnetically conductive sheet 612 and m groups of first magnetic units 611. The m groups of first magnetic units 611 may be arranged along a first direction and fixed to the first magnetically conductive sheet 612. Each first magnetic unit 611 may include a first polarity direction and a second polarity direction with opposite directions, and both the first polarity direction and the second polarity direction of the first magnetic unit 611 intersect the first direction. It can be understood that the polarity direction can be from the North Pole (N) to the South Pole (S), or from the South Pole (S) to the North Pole (N). The length of the first magnetic unit 611 in the first direction is k.

[0209] Understandably, the first magnetic unit 611 may include one or more magnets. Exemplarily, the first magnetic unit 611 may include a first magnet 6111, a second magnet 6112, and a third magnet 6113. The first magnet 6111, the second magnet 6112, and the third magnet 6113 may be arranged along a first direction. The third magnet 6113 may be located between the first magnet 6111 and the second magnet 6112. The polarity direction of the first magnet 6111 (the first polarity direction of the first magnetic unit 611) may be opposite to the polarity direction of the second magnet 6112 (the second polarity direction of the first magnetic unit 611). The polarity directions of the first magnet 6111, the second magnet 6112, and the third magnet 6113 are all different. The sum of the lengths of the first magnet 6111, the second magnet 6112, and the third magnet 6113 in the first direction is k. Understandably, the first magnet 6111, the second magnet 6112, and the third magnet 6113 can form a Hellbeck magnet array. Compared to an array of first magnet units 611 containing only the first magnet 6111 and the second magnet 6112, the Hellbeck magnet array exhibits a stronger magnetic field near the magnets. Furthermore, one first magnet 6111, one second magnet 6112, and one third magnet 6113 constitute one Hellbeck magnet assembly. The m sets of first magnet units 611 can be supplied in modular form, reducing assembly difficulty while simultaneously increasing magnetic thrust.

[0210] It is understandable that the arrangement direction of the first magnet 6111, the second magnet 6112, and the third magnet 6113 is not completely parallel to the arrangement direction of the m groups of first magnet units 611. The first magnet 6111, the second magnet 6112, and the third magnet 6113 can have a small angle with the arrangement direction of the m groups of first magnet units 611, which can be less than or equal to 10°. For example, the angle can be 2°, 3°, 5°, or 8°.

[0211] For example, the accompanying drawings illustrate m groups of first magnetic units 611, which may include 6 groups of first magnetic units 611, i.e., m = 6. It is understood that the length of the m groups of first magnetic units 611 along the first direction can be designed as needed. The length and number of the first magnetic units 611 in the first direction can be adjusted according to the required length of the magnetic field in the first direction to achieve the target length. For example, the length of the m groups of first magnetic units 611 in the first direction can be greater than or equal to 10 mm.

[0212] For example, the length k of the first magnet unit 611 in the first direction can be in the range of 2 mm to 5 mm. The simulation data in the following figures illustrates the example with the length k of the first magnet unit 611 in the first direction being 5.4 mm.

[0213] In other embodiments, the first magnet unit 611 may also consist of a single magnet, and the magnet may include two parts with opposite polarities.

[0214] In some embodiments, the first magnetic sheet 612 may include a body portion 6121, a first extension portion 6122, and a second extension portion 6123, with the first extension portion 6122 and the second extension portion 6123 respectively fixedly connected to both ends of the body portion 6121. The first extension portion 6122, the body portion 6121, and the second extension portion 6123 may be arranged along a first direction. For example, m groups of first magnetic units 611 may be fixedly connected to the body portion 6121.

[0215] Figure 12 is an assembly schematic diagram of one embodiment of the first magnetic rail 61, the second magnetic rail 62, and the base 1 shown in Figure 4. Figure 13 is a structural schematic diagram of the structure shown in Figure 12 from another angle.

[0216] As shown in Figures 12 and 13, the second magnetic track 62 may include m groups of second magnetic units 621 and second magnetic conductive sheets 622. The m groups of second magnetic units 621 may be arranged along a first direction and fixed to the second magnetic conductive sheets 622. The second magnetic units 621 may include a first polarity direction and a second polarity direction with opposite directions. Both the first polarity direction and the second polarity direction of the second magnetic units 621 intersect with the first direction. The arrangement of the second magnetic units 621 can refer to the arrangement of the first magnetic unit 611, and will not be repeated here.

[0217] For example, the length of the second magnet unit 621 in the first direction is k, which can be the same as the length of the first magnet unit 611 in the first direction.

[0218] For example, the second magnetic sheet 622 may include a body portion 6221, a first extension portion 6222, and a second extension portion 6223. The first extension portion 6222 and the second extension portion 6223 of the second magnetic sheet 622 are respectively fixedly connected to both sides of the body portion 6221 of the second magnetic sheet 622. The arrangement of the second magnetic sheet 622 can refer to the arrangement of the first magnetic sheet 612, and will not be described again here.

[0219] In some embodiments, the first magnetic rail 61 and the second magnetic rail 62 can both be fixedly connected to the base 1. m groups of first magnetic units 611 and m groups of second magnetic units 621 can be arranged at intervals along a second direction, forming a magnetic gap 63. For example, the first magnetically conductive sheet 612 of the first magnetic rail 61 is fixedly connected between the first supporting column 111 and the second supporting column 112 of the base 1. The second magnetically conductive sheet 622 of the second magnetic rail 62 is fixedly connected between the first supporting column 111 and the second supporting column 112 of the base 1. The m groups of first magnetic units 611 and m groups of second magnetic units 621 can be disposed between the first magnetically conductive sheet 612 and the second magnetically conductive sheet 622. In the second direction, the second magnetically conductive sheet 622, the m groups of second magnetic units 621, the m groups of first magnetic units 611, and the first magnetically conductive sheet 612 are arranged sequentially.

[0220] Exemplarily, the first extension 6122 of the first magnetic sheet 612 is fixedly connected to the first support post 111, and the second extension 6123 of the first magnetic sheet 612 is fixedly connected to the second support post 112. The first extension 6222 of the second magnetic sheet 622 is fixedly connected to the first support post 111, and the second extension 6223 of the second magnetic sheet 622 is fixedly connected to the second support post 112. Exemplarily, the body portion 6121 of the first magnetic sheet 612 and the body portion 6221 of the second magnetic sheet 622 can be spaced apart and arranged opposite to each other along a second direction. m sets of first magnet units 611 can be fixedly connected to the side of the body portion 6121 of the first magnetic sheet 612 facing the body portion 6221 of the second magnetic sheet 622. m sets of second magnet units 621 can be fixedly connected to the side of the body portion 6221 of the second magnetic sheet 622 facing the body portion 6121 of the first magnetic sheet 612. It is understandable that by setting the first magnetic sheet 612 and the second magnetic sheet 622, the leakage magnetic field of the m groups of first magnetic units 611 and m groups of second magnetic units 621 can be reduced, and the magnetic field strength within the magnetic gap 63 can be increased. The m groups of first magnetic units 611 and m groups of second magnetic units 621 can be arranged at intervals with the magnetic grating 71.

[0221] In other embodiments, the first magnetic sheet 612 and the second magnetic sheet 622 may be omitted. The first magnet unit 611 and the second magnet unit 621 may be directly fixed to the base 1.

[0222] Figure 14 is a cross-sectional view of one embodiment of the m groups of first magnet units 611 and m groups of second magnet units 621 shown in Figure 12 from another angle. In Figure 14, the polarity direction of each part in the magnet unit is indicated by arrows, and the arrows and dashed lines roughly indicate the direction of the magnetic field within the magnetic gap 63.

[0223] As shown in Figures 13 and 14, m groups of first magnetic units 611 and m groups of second magnetic units 621 can be arranged in a one-to-one correspondence. The polarity directions of the first magnetic units 611 and the second magnetic units 621 are arranged opposite each other in a second direction and are perpendicular to the winding plane of the first coil 4. Exemplarily, the first polarity directions of the first magnetic units 611 and the second magnetic units 621 can be arranged opposite each other in the second direction. The second polarity directions of the first magnetic units 611 and the second magnetic units 621 can be arranged opposite each other in the second direction. The first polarity directions of the first magnetic units 611 and the second magnetic units 621 can be the same. Exemplarily, the first magnetic unit 611 includes a first magnet 6111, a second magnet 6112, and a third magnet 6113. The second magnet unit 621 includes a first magnet 6211, a second magnet 6212, and a third magnet 6213. In a second direction, the first magnet 6111 of the first magnet unit 611 and the first magnet 6211 of the second magnet unit 621 are arranged opposite each other. The polarity direction of the first magnet 6111 of the first magnet unit 611 (the first polarity direction of the first magnet unit 611) is the same as the polarity direction of the first magnet 6211 of the second magnet unit 621 (the first polarity direction of the second magnet unit 621). In the second direction, the second magnet 6112 of the first magnet unit 611 and the second magnet 6212 of the second magnet unit 621 are arranged opposite each other. The polarity direction of the second magnet 6112 of the first magnet unit 611 (the second polarity direction of the first magnet unit 611) is the same as the polarity direction of the second magnet 6212 of the second magnet unit 621 (the second polarity direction of the second magnet unit 621). In the second direction, the third magnet 6113 of the first magnet unit 611 and the third magnet 6213 of the second magnet unit 621 are arranged opposite to each other. The polarity direction of the third magnet 6113 of the first magnet unit 611 is opposite to that of the third magnet 6213 of the second magnet unit 621.

[0224] In this way, the magnetic field lines of the m groups of first magnet units 611 and m groups of second magnet units 621 can be rapidly closed, forming a periodically changing magnetic field along a first direction within the magnetic gap 63. For example, the period of the magnetic field change within the magnetic gap 63 can be k. The magnetic field changes direction every 0.5k intervals.

[0225] Figure 15 is a structural schematic diagram of one embodiment of the first carrier 2 shown in Figure 4. Figure 16 is a structural schematic diagram of the first carrier 2 shown in Figure 15 from another angle.

[0226] As shown in Figures 15 and 16, the first carrier 2 may include a first connecting arm 21, a second connecting arm 22, a third connecting arm 23, and a connecting plate 24. The first connecting arm 21, the second connecting arm 22, and the third connecting arm 23 are all fixedly connected to the same side of the connecting plate 24 and are arranged sequentially at intervals along a second direction. The first connecting arm 21, the second connecting arm 22, and the connecting plate 24 of the first carrier 2 enclose a first receiving space 25. The first receiving space 25 can be used to mount a first optical element 30. The third connecting arm 23 of the first carrier 2 can be used to mount a first coil 4 (as shown in Figure 4).

[0227] It is understandable that by setting the third connecting arm 23, the first coil 4 is fixedly connected to the third connecting arm 23, and the third connecting arm 23 and the second connecting arm 22 are arranged at intervals, so that the first coil 4 can be smoothly set in the magnetic gap 63.

[0228] In some embodiments, the first carrier 2 may have a first side surface 26, a second side surface 27, and a bottom surface 28. The bottom surface 28 may be connected between the first side surface 26 and the second side surface 27. Exemplarily, the surface of the first connecting arm 21 away from the second connecting arm 22 is the first side surface 26. The surface of the third connecting arm 23 away from the second connecting arm 22 is the second side surface 27. The surface of the connecting plate 24 away from the first receiving space 25 is the bottom surface 28 of the first carrier 2.

[0229] In some embodiments, the first carrier 2 may be provided with a first groove 201 and a second groove 202. The first groove 201 and the second groove 202 may be arranged at intervals in a second direction. The extending direction of the first groove 201 is parallel to the first direction, and the extending direction of the second groove 202 is parallel to the first direction. The first groove 201 and the second groove 202 may be arranged at intervals along the second direction. The first direction and the second direction intersect. The figure illustrates an example where the first direction is parallel to the X-axis and the second direction is parallel to the Z-axis. Exemplarily, the opening of the first groove 201 may be located on the bottom surface 28 of the first carrier 2, and the opening of the second groove 202 may be located on the bottom surface 28 of the first carrier 2.

[0230] It is understood that the openings of the first slide groove 201 and the second slide groove 202 are both located on the bottom surface 28 of the first carrier 2. During the assembly of the motor 10, the installation direction of the first carrier 2 can be towards the bottom plate of the base. Compared with the scheme where the openings of the first slide groove 201 and the second slide groove 202 are both located on the side of the first carrier 2, the scheme of this embodiment is beneficial to reducing the assembly difficulty.

[0231] In some embodiments, the first groove 201 may have multiple first limiting structures 203 (two first limiting structures 203 are shown in FIG. 16). The multiple first limiting structures 203 may be arranged at intervals along a first direction. Exemplarily, the first limiting structure 203 may include a first limiting surface 2011 and a second limiting surface 2012 arranged along a second direction. It is understood that the first limiting structure 203 may be formed by the structure of the first carrier 2 itself, or it may be formed by an embedded structural component in conjunction with the first carrier 2. It is understood that the first limiting surface 2011 and the second limiting surface 2012 may be directly connected or spaced apart. The first limiting surface 2011 and the second limiting surface 2012 may be arranged parallel or at an angle. The first limiting surface 2011 and the second limiting surface 2012 being at an angle means that the plane containing the first limiting surface 2011 and the plane containing the second limiting surface 2012 are at an angle. The first limiting surface 2011 and the second limiting surface 2012 can be either planes or curved surfaces. This application does not impose any restrictions.

[0232] For example, the first limiting surface 2011 and the second limiting surface 2012 can be the groove wall surface of the first sliding groove 201. The first limiting surface 2011 can be spaced apart from the second limiting surface 2012, and the second limiting surface 2012 can be arranged at an angle. For example, the first limiting surface 2011 and the second limiting surface 2012 can roughly form a "V"-shaped first limiting structure 203. The opening of the "V"-shaped structure faces the bottom surface 28 of the first carrier 2. It is understood that the first limiting surface 2011 and the second limiting surface 2012 can be the groove wall surface of the first sliding groove 201, and there is no need to set up a separate device to form the first limiting structure 203, which helps to simplify the structure of the motor 10 and reduce the assembly difficulty.

[0233] In some embodiments, in the first direction, clearance grooves are provided at both ends of the second slide groove 202, so that a fifth limiting surface 2021 is formed in the middle of the groove wall surface of the second slide groove 202.

[0234] In other embodiments, the first groove 201 and the second groove 202 may also be disposed on the side of the first carrier 2.

[0235] Figure 17 is an assembly schematic diagram of one embodiment of the first carrier 2, first guide rod 91, second guide rod 92, and base 1 shown in Figure 4.

[0236] As shown in Figures 15 to 17, when the first carrier 2 is assembled to the base 1, the bottom surface 28 of the first carrier 2 can face the bottom plate 115 of the base 1. The first carrier 2 can move relative to the base 1 in a first direction by cooperating with the first guide 41 and the first slide groove 201 of the first carrier 2, and by cooperating with the second guide 42 and the second slide groove 202 of the first carrier 2.

[0237] For example, the first guide rod 91 can be slidably connected within the first groove 201 of the first carrier 2, and the second guide rod 92 can be slidably connected within the second groove 202 of the first carrier 2. The length directions of the first guide rod 91 and the second guide rod 92 can both be parallel to the first direction. The first groove 201 and the second groove 202 can serve as positioning structures for the first guide rod 91 and the second guide rod 92, facilitating rapid positioning and installation between the first carrier 2 and the first guide rod 91 and the second guide rod 92.

[0238] It is understandable that by setting the length direction of the first guide rod 91 and the length direction of the second guide rod 92 to be parallel to the first direction, when the first carrier 2 moves along the first direction, the first guide rod 91 and the second guide rod 92 can provide support and guide the movement direction of the first carrier 2, preventing the first carrier 2 from being misaligned during the movement and ensuring that the first carrier 2 moves quickly and stably.

[0239] It is understandable that, compared to the scheme in which the first carrier 2 moves relative to the base 1 through the cooperation of ball bearings and sliding grooves, this embodiment uses a sliding shaft (first guide rod 91 and second guide rod 92) and the sliding grooves of the first carrier 2 (first sliding groove 201 and second sliding groove 202) to achieve directional movement of the first carrier 2 relative to the base 1. The sliding shaft has high straightness processing accuracy, which can ensure the high precision and minimal tilt movement of the first optical element 30.

[0240] Figure 18 is an assembly schematic diagram of one embodiment of the first carrier 2, second carrier 3, first guide rod 91, second guide rod 92, and base 1 shown in Figure 4. Figure 19 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at BB. Figure 20 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at CC.

[0241] The following section uses the connection relationship between the first carrier 2 and the first guide rod 91 and the second guide rod 92 as an example to illustrate the connection relationship between the first carrier 2, the second carrier 3 and the first guide rod 91 and the second guide rod 92.

[0242] As shown in Figures 18 to 20, the first guide member 41 can abut between the first limiting surface 2011 and the second limiting surface 2012. For example, when the first guide member 41 is a first guide rod 91, the first guide rod 91 can abut between the first limiting surface 2011 and the second limiting surface 2012. It is understood that the first guide rod 91 and the first slide groove 201 have two contact points in the second direction, enabling rapid positioning of the first carrier 2 in the second direction during the assembly process of the first carrier 2 with the first guide rod 91 and the second guide rod 92. Furthermore, when the actual product size of the first guide rod 91 is slightly larger than the design size due to tolerance, the first guide rod 91 can still be assembled within the "V"-shaped first limiting structure 203; the "V" shape can also be used for tolerance.

[0243] In some embodiments, the second guide member 42 may be disposed within the second slide groove 202. For example, when the second guide member 42 is a second guide rod 92, the second guide rod 92 may be slidably connected within the second slide groove 202 and abut against the fifth limiting surface 2021.

[0244] It is understandable that the first slide groove 201, in cooperation with the first guide member, and the second slide groove 202, in cooperation with the second guide member, can also be used to limit the first carrier 2 in a third direction. The third direction is perpendicular to the first direction and perpendicular to the second direction.

[0245] In some embodiments, the width of the second groove 202 in the second direction can be greater than the width of the second guide rod 92 in the second direction. This allows for a certain degree of manufacturing error in the first carrier 2, ensuring that even if the size of the first carrier 2 slightly increases or decreases due to manufacturing errors, the first carrier 2 can still be successfully slidably connected to the first guide rod 91 and the second guide rod 92, thereby improving the fault tolerance rate and helping to save production costs.

[0246] As shown in Figure 18, the second carrier 3 and the first carrier 2 are arranged at intervals in a first direction. The second carrier 3 may include a first connecting arm 31, a second connecting arm 32, a third connecting arm 33, and a base plate 34. The arrangement of the first connecting arm 31, the second connecting arm 32, the third connecting arm 33, and the base plate 34 of the second carrier 3 can refer to the arrangement of the connecting plate 24, the first connecting arm 21, the second connecting arm 22, and the third connecting arm 23 of the first carrier 2. The base plate 34, the first connecting arm 21, and the second connecting arm 22 of the second carrier 3 can enclose a second receiving space 35, which can be used to install a second optical element 40 (as shown in Figure 2). The third connecting arm 23 can be used to install a second coil 5 (as shown in Figure 4).

[0247] In some embodiments, the second carrier 3 may be provided with a third slide groove 301 and a fourth slide groove 302 spaced apart. The bottom surface 38 of the second carrier 3 may face the bottom plate 115 of the base 1. The extending directions of the third slide groove 301 and the fourth slide groove 302 may both be parallel to the first direction, and the third slide groove 301 and the fourth slide groove 302 are spaced apart along the second direction. The third guide member 51 abuts in the third slide groove 301, and the fourth guide member 52 is located in the fourth slide groove 302. The second carrier 3 can move relative to the base 1 in the first direction by the cooperation of the third guide member 51 and the third slide groove 301, and the cooperation of the fourth guide member 52 and the fourth slide groove 302.

[0248] For example, the third guide member 51 can be the first guide rod 91, and the fourth guide member 52 can be the second guide rod 92. The first guide rod 91 can be slidably connected in the third slide groove 301, and the second guide rod 92 can be slidably connected in the fourth slide groove 302. The third slide groove 301 and the fourth slide groove 302 can serve as positioning structures for the second carrier 3 and the first guide rod 91 and the second guide rod 92, facilitating rapid positioning and installation between the second carrier 3 and the first guide rod 91 and the second guide rod 92. It is understood that by setting the length direction of the first guide rod 91 and the length direction of the second guide rod 92 to be parallel to the first direction, when the second carrier 3 moves along the first direction, the first guide rod 91 and the second guide rod 92 can provide support, and at the same time, they can also guide the movement direction of the second carrier 3, preventing misalignment of the second carrier 3 during movement and ensuring rapid and stable movement of the second carrier 3.

[0249] For example, the mating connection between the first guide rod 91 and the third slide groove 301 can be set with reference to the mating connection between the first guide rod 91 and the first slide groove 201. The mating connection between the second guide rod 92 and the fourth slide groove 302 can be set with reference to the mating connection between the second guide rod 92 and the second slide groove 202. The first carrier 2 and the second carrier 3 can be connected to the first guide rod 91 and the second guide rod 92 at intervals.

[0250] It is understandable that, compared to the scheme in which the second carrier 3 moves relative to the base 1 through the cooperation of ball bearings and sliding grooves, this embodiment uses a sliding shaft (first guide rod 91 and second guide rod 92) and the sliding groove of the second carrier 3 to achieve the movement of the second carrier 3 relative to the base 1. The sliding shaft has high straightness processing accuracy, which can ensure the high precision and minimal tilt movement of the second optical element 40.

[0251] For example, the third slide groove 301 may have multiple third limiting structures 305, which may be spaced apart along the first direction. Each third limiting structure 305 may include a third limiting surface 3011 and a fourth limiting surface 3012. A third guide member 51 may abut between the third limiting surface 3011 and the fourth limiting surface 3012. A fourth guide member 52 is located in the fourth slide groove 302. For example, the third limiting surface 3011 and the fourth limiting surface 3012 may generally form a "V" shape.

[0252] In some embodiments, the first guide member 41 and the third guide member 51 can both be the first guide rod 91. In this way, the first carrier 2 and the second carrier 3 share a single guide rod during movement, eliminating the need for separate first guide members 41 and third guide members 51. This allows for a more compact arrangement of the internal components of the motor 10 and reduces the size of the motor 10. Similarly, the second guide member 42 and the fourth guide member 52 can both be the second guide rod 92.

[0253] It is understandable that the first guide member 41 and the third guide member 51 may overlap. That is, a portion of the first guide rod 91 can function as the first guide member 41 at a first moment and as the third guide member 51 at a second moment. This is determined by the sliding position relationship between the first carrier 2 and the second carrier 3 on the first guide rod 91. Similarly, the second guide member 42 and the fourth guide member 52 may overlap. A portion of the second guide rod 92 can function as the second guide member 42 at a first moment and as the fourth guide member 52 at a second moment.

[0254] In some embodiments, the first guide member 41 and the third guide member 51 can be a first guide rod 91, allowing the first slide groove 201 and the third slide groove 301 to be slidably connected to the first guide rod 91. This also allows the first limiting structure 203 of the first carrier 2 and the third limiting structure of the second carrier 3 to be slidably connected to the first guide rod 91. This helps to reduce the misalignment of the optical axes of the first optical element 30 and the second optical element 40 when the first carrier 2 and the second carrier 3 respectively carry the first optical element 30 and the second optical element 40.

[0255] In other embodiments, the third guide member may also be part of the second guide rod 92, and the fourth guide member may also be part of the first guide rod 91. The first guide rod 91 is located in the fourth slide groove 302. The second guide rod 92 is located in the third slide groove 301 and abuts against the third limiting structure 305.

[0256] Figure 21 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at DD.

[0257] As shown in Figure 21, the first slide groove 201 includes two first limiting structures 203. In the first direction, the two first limiting structures 203 are located at positions P1 and P2, respectively. That is, there are two connection points between the first carrier 2 and the first guide rod 91 in the first direction. It can be understood that multiple first limiting structures 203 can be used to constrain the degree of freedom of rotation of the first carrier 2 about a third direction, reducing the risk of the first carrier 2 rotating about an axis parallel to the third direction during movement, thus improving the stability of the first carrier 2's movement. Furthermore, the two ends of the first guide rod 91 are in contact with the first limiting structures 203, while other parts are not in contact with the first slide groove 201. This prevents excessive friction due to an excessively large contact area between the first carrier 2 and the first guide rod 91, which could lead to uneven movement and poor stability of the first carrier 2 during movement. It also avoids poor flatness of the contact surface between the first carrier 2 and the first guide rod 91, which could result in poor stability of the first carrier 2 during movement.

[0258] Figure 22 is a partial cross-sectional view of one embodiment of the structure shown in Figure 18 at EE.

[0259] As shown in Figure 22, the second slide groove 202 and the second guide rod 92 are connected at the same position. Exemplarily, the second guide rod 92 abuts against the fifth limiting surface 2021, which is located at position P3. Exemplarily, in the first direction, the fifth limiting surface 2021 can be located in the middle of the second slide groove 202. This reduces the contact area between the second slide groove 202 and the second guide rod 92, thereby preventing excessive friction due to an excessively large contact area between the first carrier 2 and the second guide rod 92, which could lead to uneven movement and poor stability of the first carrier 2 during movement. It also avoids the problem of poor flatness of the contact surfaces between the first carrier 2 and the second guide rod 92, which could also result in poor stability of the first carrier 2 during movement.

[0260] Figure 23 is a partial structural diagram of the structure shown in Figure 18 from another angle.

[0261] As shown in Figure 23, the fifth limiting surface 2021 (at position P3) and the two first limiting structures 203 (at positions P1 and P2) can be connected sequentially to form a triangle. In other words, the three connection points of the first carrier 2, the first guide rod 91, and the second guide rod 92 can be connected sequentially to form a triangle. The projection of the center O of the first carrier 2 onto the plane of the triangle can coincide with the triangle. In this way, a three-point connection is formed between the first carrier 2, the first guide rod 91, and the second guide rod 92, which can reduce the risk of the first carrier 2 swaying during movement.

[0262] Figure 24 is a partial structural schematic diagram of one embodiment of the electrical connection assembly 8 shown in Figure 4. Figure 25 is a structural schematic diagram of the electrical connection assembly 8 shown in Figure 24 from another angle.

[0263] As shown in Figures 24 and 25, the electrical connection assembly 8 may include a first electrical connector 81 and a second electrical connector 82 (the first electrical connector 81 and the second electrical connector 82 are schematically distinguished by dashed lines in the figures). The first electrical connector 81 is fixedly connected to the second electrical connector 82 and is electrically connected to the second electrical connector 82.

[0264] In some embodiments, the first electrical connector 81 may include a first end 811, a second end 812, a third end 813, a first connecting segment 814, and a second connecting segment 815 (the first end 811, the first connecting segment 814, and the second connecting segment 815 are schematically distinguished by dashed lines in the figure). The first connecting segment 814 is fixedly connected between the first end 811 and the second end 812, and electrically connects the first end 811 and the second end 812. The second connecting segment 815 is fixedly connected between the first end 811 and the third end 813, and electrically connects the first end 811 and the third end 813. The first end 811 can be used to electrically connect to a second electrical connector 82. The second end 812 can be used to electrically connect to a device on the first carrier 2 (as shown in Figure 4), and the third end 813 can be used to electrically connect to a device on the second carrier 3 (as shown in Figure 4). The first connecting segment 814 can be used for signal transmission between the first end 811 and the second end 812. The second connecting segment 815 can be used for signal transmission between the first end 811 and the third end 813. The first connecting segment 814 and the second connecting segment 815 are deformable.

[0265] For example, the first connecting segment 814 may be generally U-shaped. The second connecting segment 815 may be generally U-shaped.

[0266] In some embodiments, the first connecting segment 814 and the second connecting segment 815 can be integrally formed structural components. For ease of understanding, the first connecting segment 814 and the second connecting segment 815 are schematically divided by dashed lines in the figure. For example, the first connecting segment 814 and the second connecting segment 815 can be part of an integrally formed rigid-flex board. Alternatively, the first connecting segment 814 and the second connecting segment 815 can be part of an integrally formed flexible circuit board. In this way, the first connecting segment 814 and the second connecting segment 815 can be electrically connected to the second electrical connector 82 at one location, that is, only one electrically connected end needs to be provided between the first electrical connector 81 and the second electrical connector 82 to enable power supply to the devices on the first carrier 2 and the second carrier 3.

[0267] In other embodiments, portions of the first end 811, the second end 812, and the first connecting segment 814 can be a single device, and portions of the first end 811, the third end 813, and the second connecting segment 815 can be a single device. That is, the first electrical connector 81 is divided into two separate devices, which supply power to the devices on the first carrier 2 and the devices on the second carrier 3, respectively. In this way, the assembly of the first electrical connector 81 is less difficult.

[0268] In some embodiments, the first electrical connector 81 and the second electrical connector 82 can be integrally formed structural components. For ease of understanding, the first electrical connector 81 and the second electrical connector 82 are schematically divided by dashed lines in the figures. For example, the first electrical connector 81 and the second electrical connector 82 can be part of an integrally formed rigid-flex board. Alternatively, the first electrical connector 81 and the second electrical connector 82 can be part of an integrally formed flexible circuit board. In this way, the first electrical connector 81 and the second electrical connector 82 have a smaller volume.

[0269] In other embodiments, the first electrical connector 81 can also achieve electrical connection with the second electrical connector 82 by providing an electrical connector. The electrical connector can be a board-to-board connector (BTB) or a zero insertion force connector (ZIF).

[0270] Figure 26 is an assembly schematic diagram of one embodiment of the first electrical connector 81, the second electrical connector 82, and the base 1 shown in Figure 4. Figure 27 is a structural schematic diagram of the structure shown in Figure 26 from another angle.

[0271] As shown in Figures 26 and 27, the electrical connection assembly 8 can be partially fixedly connected to the base 1. Exemplarily, the first end 811 of the first electrical connector 81 can be fixedly connected to the support plate 12 of the base 1. The second electrical connector 82 can be fixedly connected to the side of the first portion 121 of the support plate 12 away from the movement space 1001.

[0272] For example, the first electrical connector 81 may be partially located in the first gap 126, partially in the second gap 127, partially in the third gap 128, and partially in the fourth gap 129. It is understood that the arrangement of the first portion 121, the second portion 122, the third portion 123, the fourth portion 124, and the fifth portion 125 can be used to create several gaps to accommodate the first electrical connector 81, thereby achieving the positioning and installation of the first electrical connector 81 on the support plate 12, reducing the risk of misalignment of the first electrical connector 81 during the operation of the motor 10, and preventing the first electrical connector 81 from interfering with the operation of the first carrier 2 and the second carrier 3.

[0273] Figure 28 is an assembly schematic diagram of one embodiment of the first electrical connector 81, second electrical connector 82, first carrier 2, second carrier 3, and base 1 shown in Figure 4. Figure 29 is a partial structural schematic diagram of the structure shown in Figure 28 from another angle.

[0274] As shown in Figures 28 and 29, the second end 812 of the first electrical connector 81 can be fixedly connected to the first carrier 2, and the third end 813 can be fixedly connected to the second carrier 3. Exemplarily, the second end 812 of the first electrical connector 81 can be fixedly connected to the first side 26 of the first carrier 2, and the third end 813 can be fixedly connected to the first side 36 of the second carrier 3.

[0275] For example, the first connecting segment 814 can be connected between the first carrier 2 and the base 1. The first connecting segment 814 is deformable. When the first carrier 2 moves back and forth in a first direction, the first connecting segment 814 can stretch or bend along with the movement of the first carrier 2. The U-shaped first connecting segment 814 can provide a reliable electrical connection for the large-stroke movement of the first carrier 2. The first electrical connector 81 is not easily disconnected from the first coil 4 on the first carrier 2.

[0276] Exemplarily, the second connecting segment 815 can be fixedly connected between the second carrier 3 and the base 1. The second connecting segment 815 is deformable. For example, when the second carrier 3 moves back and forth in the first direction, the second connecting segment 815 can stretch or bend along with the movement of the second carrier 3. The U-shaped second connecting segment 815 can provide a reliable electrical connection for the large-stroke movement of the first carrier 2. The first electrical connector 81 is not easily de-energized from the second coil 5 on the second carrier 3.

[0277] Figure 30 is an assembly schematic diagram of one embodiment of the first coil 4, second coil 5, electrical connection assembly 8, first carrier 2, second carrier 3, and base 1 shown in Figure 4.

[0278] As shown in Figure 30, n first coils 4 can be fixedly connected to the side of the first carrier 2, where n is an integer greater than or equal to 2. The n first coils 4 can be arranged along a first direction. w second coils 5 can be fixedly connected to the side of the second carrier 3, where w is an integer greater than or equal to 1. When w is greater than or equal to 2, multiple second coils 5 can be arranged along the first direction. For example, the first coils 4 can be fixedly connected to the third connecting arm 23 of the first carrier 2. The first coils 4 can be fixedly connected to the second side 27 of the first carrier 2. The second coils 5 can be fixedly connected to the third connecting arm 33 of the second carrier 3. The second coils 5 can be fixedly connected to the second side 37 of the second carrier 3.

[0279] Figure 31a is a schematic diagram of an embodiment of the electrical connection component 8 and the driver chip 99 shown in Figure 4. Figure 31b is a partial cross-sectional view of an embodiment of the structure shown in Figure 30 at FF.

[0280] As shown in Figures 29 to 31b, the second end 812 of the first electrical connector 81 can be fixed to the first side 26 of the first carrier 2, and the n first coils 4 can be fixed to the second side 27 of the first carrier 2. The electrical connection assembly 8 may also include a first power supply terminal 831. One end of the first power supply terminal 831 is electrically connected to the second end 812 of the first electrical connector 81, and the other end is electrically connected to the first coils 4. The first power supply terminal 831 can be used for the electrical connection between the second end 812 of the first electrical connector 81 and the first coils 4.

[0281] For example, the first power supply terminal 831 can be embedded within the first carrier 2. For instance, the first power supply terminal 831 and the first carrier 2 can be molded into an integral structural component using an insert molding process. The insert molding process refers to a molding method in which a pre-prepared insert is placed into a mold, followed by the injection of molten material. The molten material then bonds and solidifies with the insert to form an integral product. For example, the first power supply terminal 831 can be made of a conductive metal material.

[0282] In some embodiments, the third end 813 of the first electrical connector 81 can be fixed to the first side 36 of the second carrier 3, and the w second coils 5 can be fixed to the second side 37 of the second carrier 3. The electrical connection assembly 8 may also include a second power supply terminal 832. One end of the second power supply terminal 832 is electrically connected to the first electrical connector 81, and the other end is electrically connected to the second coils 5. The second power supply terminal 832 can be used for electrical connection between the second electrical connector 81 and the second coils 5.

[0283] For example, the second power supply terminal 832 can be embedded within the second carrier 3. The arrangement of the second power supply terminal 832 and the second carrier 3 can refer to the arrangement of the first power supply terminal 831 and the first carrier 2, and will not be repeated here. For example, the second power supply terminal 832 and the second carrier 3 can be formed into an integral structural component by an insert molding process. For example, the second power supply terminal 832 can be made of a conductive metal material.

[0284] For example, the first end 811 of the first electrical connector 81 can be electrically connected to the second electrical connector 82; the second end 812 can be electrically connected to n first coils 4; and the third end 813 can be electrically connected to w second coils 5. The second electrical connector 82 can be electrically connected to the battery 700 of the electronic device 1000. In this way, the battery 700 of the electronic device 1000 can supply power to the n first coils 4 and the w second coils 5 through the second electrical connector 82 and the first electrical connector 81.

[0285] In some embodiments, the driver chip 99 of the motor 10 of the camera module 100 (shown in FIG. 31a) can be fixed to and electrically connected to the second electrical connector 82. The driver chip 99 can be used to regulate the current flowing through the first coil 4 and the second coil 5.

[0286] In some embodiments, the first carrier 2 may further include a reinforcing plate 231. The reinforcing plate 231 may be embedded in the third connecting arm 23 of the first carrier 2 to improve the strength of the third connecting arm 23 and better support the first coil 4.

[0287] Figure 32 is an assembly schematic diagram of one embodiment of the structure shown in Figure 4. Figure 33 is a structural schematic diagram of the structure shown in Figure 32 from another angle. Figure 34 is a structural schematic diagram of one embodiment of the first coil 4, second coil 5, m groups of first magnet units 611 and m groups of second magnet units 621 shown in Figure 33.

[0288] As shown in Figures 32 to 34, n first coils 4 can be located within the magnetic gap 63. The n first coils 4 can be positioned facing m groups of first magnetic units 611 and m groups of second magnetic units 621. Specifically, "n first coils 4 facing m groups of first magnetic units 611" means that the winding plane of the first coil 4 faces the m groups of first magnetic units 611. Similarly, "n first coils 4 facing m groups of second magnetic units 621" means that the winding plane of the first coil 4 faces the m groups of second magnetic units 621. The plane in which the wires of the first coil 4 are wound is the winding plane of the first coil 4.

[0289] For example, the first direction can be parallel to the optical axis of the camera module 100. After the n first coils 4 are energized, under the action of the magnetic field in the magnetic gap 63, the first carrier 2 can be driven to move along the first direction, thereby carrying the first optical element 30 to move along the optical axis, so as to realize the focusing or zooming of the camera module 100.

[0290] Understandably, compared to the scheme of setting the first magnet unit 611 or the second magnet unit 621 only on one side of the first coil 4, this embodiment sets magnet units on both sides of the first coil 4. The magnetic flux density in the magnetic gap 63 is greater. When the number of coils is the same, the Ampere force received by n first coils 4 after being energized is greater. Therefore, the speed at which the first carrier 2 moves when the first coil 4 drives it can be faster, which is beneficial for rapid focusing or zooming. Furthermore, the direction of the magnetic field in the magnetic gap 63 is mostly or entirely perpendicular to the winding plane of the first coil 4. The Ampere force received by the first coil 4 after being energized is parallel to the winding plane of the first coil 4 or the angle between the first coil 4 and the winding plane is smaller. The force of the first coil 4 for moving the first carrier 2 in the first direction is greater, and the movement speed of the first carrier 2 can be faster, which is beneficial for rapid focusing or zooming. In addition, the component of the Ampere force on the first coil 4 in the direction perpendicular to the winding plane is smaller, and the force on the first carrier 2 in the non-moving direction is smaller. The first carrier 2 is less prone to shaking, which is beneficial to the smooth operation of the motor 10. It can reduce the noise when the motor 10 drives the first optical element 30 to move, which is beneficial to quiet focusing / zooming.

[0291] For example, w second coils 5 can be located within the magnetic gap 63. The w second coils 5 can be positioned facing m groups of first magnet units 611 and m groups of second magnet units 621. For example, after the w second coils 5 are energized, they drive the second carrier 3 to move along a first direction under the influence of the magnetic field within the magnetic gap 63. The way the w second coils 5 drive the second carrier 3 is similar to the way the n first coils 4 drive the first carrier 2.

[0292] Understandably, n first coils 4 and w second coils 5 can share the magnetic fields of the first magnetic rail 61 and the second magnetic rail 62, eliminating the need for an additional magnet unit acting on the second coil 5, making the structure of the motor 10 more compact.

[0293] It is understandable that the number of the first coil 4 and the second coil 5 can be the same, that is, n = w. For example, the number of the first coil 4 and the second coil 5 can both be two. The number of the first coil 4 and the second coil 5 can also be different. For example, the number of the first coil 4 can be two, and the number of the second coil 5 can be three. Or, the number of the first coil 4 can be two, and the number of the second coil 5 can be one.

[0294] Figure 35 is an assembly diagram of one embodiment of the partial structure shown in Figure 4.

[0295] As shown in Figure 35, a first tunneling magnetoresistance (TMR) sensor 72 can be fixedly connected to the first carrier 2 and spaced apart from the first coil 4. A second tunneling magnetoresistance (TMR) sensor 73 is fixedly connected to the second carrier 3 and spaced apart from the second coil 5. Both the first TMR sensor 72 and the second TMR sensor 73 can be electrically connected to the first electrical connector 81. For example, the first TMR sensor 72 can be fixedly connected to the first side 26 of the first carrier 2 and electrically connected to the second end 812 of the first electrical connector 81. The second TMR sensor 73 can be fixedly connected to the first side 36 of the second carrier 3 and electrically connected to the third end 813 of the first electrical connector 81.

[0296] Figure 36 is an assembly schematic diagram of one embodiment of the partial structure shown in Figure 4. Figure 37 is a partial cross-sectional view of one embodiment of the structure shown in Figure 36 at point GG.

[0297] As shown in Figures 36 and 37, the first TMR sensor 72 can be positioned opposite to the magnetic grating 71. The second TMR sensor 73 can also be positioned opposite to the magnetic grating 71.

[0298] Understandably, the first TMR sensor 72 can cooperate with the magnetic grating 71 to measure the displacement of the first carrier 2 when it moves in the first direction. The drive chip 99 is electrically connected to the first electrical connector 81. During the movement of the first carrier 2, the first TMR sensor 72 can feed back the displacement of the first carrier 2 to the drive chip 99 of the motor 10 (as shown in Figure 31a). The motor 10 drive IC can then adjust the current of the first carrier 2, improving the position control accuracy of the first carrier 2. The second TMR sensor 73 can cooperate with the magnetic grating 71 to measure the displacement of the second carrier 3 when it moves in the first direction. During the movement of the second carrier 3, it can feed back the displacement of the second carrier 3 to the drive chip 99 of the motor 10. The motor 10 drive chip 99 can then adjust the current of the second carrier 3, improving the position control accuracy of the second carrier 3.

[0299] It is understandable that the first TMR sensor 72 and the second TMR sensor 73 can share the magnetic grating 71 for position detection. This saves space on the magnetic grating 71, making the motor 10 more compact and reducing the number of components. TMR sensors have advantages such as high accuracy, high sensitivity, low power consumption, small size, good temperature stability, and a wide operating temperature range. The motor 10 uses high-precision TMR sensors, resulting in high position sensing accuracy for the first carrier 2 and the second carrier 3.

[0300] In other embodiments, the first TMR sensor 72 can be fixedly connected to the bottom surface 28 of the first carrier 2. The second TMR sensor 73 can be fixedly connected to the bottom surface 38 of the second carrier 3. The magnetic grating 71 can be fixedly connected to the base plate 115 of the base body 11 (as shown in FIG. 9). It is understood that the positions of the magnetic grating 71, the first TMR sensor 72 and the second TMR sensor 73 can be adjusted as needed, and this application does not impose any limitations.

[0301] Figure 38 is a partial cross-sectional view of one embodiment of the structure shown in Figure 36 at HH.

[0302] As shown in Figures 36 to 38, in the second direction, the distance between the first coil 4 and the first slide groove 201 is less than the distance between the first coil 4 and the second slide groove 202. That is, the first coil 4 can be installed on the side of the first carrier 2 closest to the first slide groove 201. The figures are illustrated with the second direction parallel to the Z-axis as an example. In the second direction, the distance between the first coil 4 and the first slide groove 201 can be the distance between the center of the first coil 4 and the centerline of the first slide groove 201. Exemplarily, the projection of the center of the first coil 4 onto the base 1 along a third direction is the first projection, and the projection of the centerline of the first slide groove 201 onto the base 1 along a third direction is the fifth projection. In the second direction, the distance between the first projection and the fifth projection is the distance between the first coil 4 and the first slide groove 201 in the second direction.

[0303] It is understood that the first slide groove 201 has multiple first limiting structures 203, and the first guide rod 91 abuts against the first limiting structure 203 to achieve the positioning of the first carrier 2 in the second direction. Torque is the lever arm multiplied by the torque. During the movement of the first carrier 2 relative to the base 1 in the first direction, the magnitude of the rotational tendency of the first carrier 2 around the Y-axis (third direction) and the magnitude of the driving force on the first coil 4, as well as the distance between the first coil 4 and the first slide groove 201 in the second direction, are all closely related. Compared to the second slide groove 202 where the first coil 4 is closer to the first carrier 2 in the second direction, in this embodiment, arranging the first coil 4 closer to the first slide groove 201 of the first carrier 2 can reduce the lever arm of the driving force. When the current and torque of the first coil 4 remain constant, reducing the driving force lever arm can reduce the torque, thereby reducing the tendency of the first carrier 2 to rotate around the Y-axis (third direction). This prevents the first carrier 2 from rotating too much around the Y-axis (third direction), causing the first limiting surface 2011 and the second limiting surface 2012 to disengage from the slide bar, resulting in instability (floating upwards) and tilting of the first carrier 2. The first coil 4 is installed on one side of the first slide groove 201 of the first carrier 2, which is beneficial to the stable operation of the motor 10, so as to achieve accurate focusing / zooming of the camera module 100.

[0304] In some embodiments, the motor 10 may further include a first magnetic chuck 13, a second magnetic chuck 14, a third magnetic chuck 15, and a fourth magnetic chuck 16. The first magnetic chuck 13 and the second magnetic chuck 14 can be fixedly connected to the first carrier 2. In the second direction, the distance L1 between the first magnetic chuck 13 and the first slide groove 201 is less than the distance L3 between the first magnetic chuck 13 and the second slide groove 202. The distance L4 between the second magnetic chuck 14 and the second slide groove 202 is less than the distance L2 between the second magnetic chuck 14 and the first slide groove 201. That is, the first magnetic chuck 13 is closer to the first slide groove 201, and the second magnetic chuck 14 is closer to the second slide groove 202. The third magnetic chuck 15 and the fourth magnetic chuck 16 can be fixedly connected to the base 1. The first magnetic chuck 13 and the third magnetic chuck 15 can be arranged opposite each other in a third-direction orientation, and the second magnetic chuck 14 and the fourth magnetic chuck 16 can be arranged opposite each other in a third-direction orientation, which is perpendicular to both the first and second directions. Both the first magnetic chuck 13 and the second magnetic chuck 14 can be subjected to magnetic forces parallel to a third direction and toward the base plate 115 of the base 1. In this way, the cooperation of the first magnetic chuck 13 and the third magnetic chuck 15, and the cooperation of the second magnetic chuck 14 and the fourth magnetic chuck 16, can be used to keep the first carrier 2, the first guide 41, the second guide 42 and the base 1 in contact.

[0305] For example, in the third direction, the first magnetic chuck 13 is subjected to a first magnetic force F1, and the second magnetic chuck 14 is subjected to a second magnetic force F2. Both the first magnetic force F1 and the second magnetic force F2 are parallel to the third direction. It is understood that the direction of the magnetic force between the first magnetic chuck 13 and the third magnetic chuck 15 is related to their relative positions. In addition, the first magnetic chuck 13 can also generate magnetic forces with other nearby magnetic components. Therefore, the first magnetic force F1 refers to the component of the total magnetic force on the first magnetic chuck 13 in the third direction. Similarly, the second magnetic force F2 refers to the component of the total magnetic force on the second magnetic chuck 14 in the third direction. It is understood that in the third direction, the first magnetic force F1 on the first magnetic chuck 13 can press the first carrier 2 onto the first guide rod 91, which can limit the first carrier 2 in the third direction and reduce the risk of the first carrier 2 slipping off the first guide rod 91. The second magnetic force F2 received by the second magnetic attractor 14 can provide a force to the first carrier 2 in the direction of the second guide rod 92, so that the first carrier 2 can be pressed tightly on the second guide rod 92, reducing the risk of the first carrier 2 slipping off the second guide rod 92.

[0306] It is understandable that, compared to the solution of only setting one of the first magnetic 13 and the second magnetic 14 in the motor 10, setting both the first magnetic 13 and the second magnetic 14 can ensure that both sides of the first carrier 2 are subjected to forces in the direction of the base plate 115 of the base 1, thereby reducing the problem of unstable motion posture caused by the unbalanced force on the first carrier 2.

[0307] In other embodiments, the motor 10 may also be provided with only one of the first magnetic member 13 and the second magnetic member 14. The position of the first magnetic member 13 or the second magnetic member 14 may also be located at other positions on the first carrier 2.

[0308] In some embodiments, the projection of the center of the first magnetic member 13 onto the base 1 along a third direction is the first projection; the projection of the first slide groove 201 onto the base 1 along a third direction is the second projection; and the projection of the second slide groove 202 onto the base 1 along a third direction is the third projection. The first projection may be located on the side of the second projection closer to the third projection, or the first projection may be located on the side of the second projection farther from the third projection (as shown in Figure 38), or the first projection may coincide with the second projection. It is understood that the position of the first magnetic member 13 relative to the first slide groove 201 can be set according to requirements, and this application does not impose any limitations. The projection of the center of the second magnetic member 14 onto the base 1 along a third direction is the fourth projection. The positional relationship between the fourth projection, the second projection, and the third projection can be referred to the positional relationship between the first projection, the second projection, and the third projection, and will not be elaborated here.

[0309] In some embodiments, one of the first magnetic attractor 13 and the third magnetic attractor 15 may be made of a magnetic material, while the other may be made of a magnetically conductive material. Alternatively, both the first magnetic attractor 13 and the third magnetic attractor 15 may be made of magnetic materials. In this way, there may be a magnetic force between the first magnetic attractor 13 and the third magnetic attractor 15. For example, the first magnetic attractor 13 may be made of a magnetic material, and the third magnetic attractor 15 may be made of a magnetic material; or, the first magnetic attractor 13 may be made of a magnetic material, and the third magnetic attractor 15 may be made of a magnetic material; or, the first magnetic attractor 13 may be made of a magnetically conductive material, and the third magnetic attractor 15 may be made of a magnetic material. In this way, there may be a magnetic force between the first magnetic attractor 13 and the third magnetic attractor 15, and there may be a magnetic force between the second magnetic attractor 14 and the fourth magnetic attractor 16.

[0310] For example, when the first magnetic accumulator 13 is made of a magnetic material, the first magnetic accumulator 13 may be a magnet or other magnetic components.

[0311] For example, when the first magnetic attractor 13 is made of a magnetically conductive material, the first magnetic attractor 13 can be an iron sheet, a silicon steel sheet, or an alloy formed from various iron products and rare earth elements.

[0312] It is understandable that the materials for the second magnetic accumulator 14 and the fourth magnetic accumulator 16 can be selected in the same way as the materials for the first magnetic accumulator 13 and the second magnetic accumulator 14, and will not be repeated here.

[0313] In some embodiments, the first magnetic attractor 13 is made of a magnetically conductive material, and the first magnet unit 611 and the second magnet unit 621 constitute the third magnetic attractor 15. Exemplarily, the first magnetic attractor 13 can be fixedly connected to the end of the second connecting arm 22 away from the connecting plate 24. The first magnetic attractor 13 is located on the side of the first magnet unit 611 away from the base plate 115, and also on the side of the second magnet unit 621 away from the base plate 115. It is understood that by setting the first magnet unit 611 and the second magnet unit 621 as the third magnetic attractor 15, it is not necessary to separately set up the third magnetic attractor 15 structure, which helps to reduce the number of components in the motor 10, simplify the structure of the motor 10, and reduce the size of the motor 10. In other embodiments, one of the first magnet unit 611 and the second magnet unit 621 serves as the third magnetic attractor 15; this application does not impose any limitation on this.

[0314] In this embodiment, the second magnetic attractor 14 is a magnet. The second guide rod 92 can be made of a magnetic material and has magnetism, thus serving as the fourth magnetic attractor 16. In this way, the second guide rod 92 can not only guide the first carrier 2 during movement but also interact with the second magnetic attractor 14 to provide a second magnetic force F2. The elimination of the need for a separate fourth magnetic attractor 16 reduces the number of components in the motor 10, simplifies its structure, and reduces its size.

[0315] In other embodiments, the third magnetic member 15 and the fourth magnetic member 16 may also be separate structural components, fixedly connected to the base 1.

[0316] In some embodiments, the first magnetic force F1 can be greater than the second magnetic force F2. It is understood that setting F1 to be greater than F2, meaning the first carrier 2 experiences a greater third-direction upward constraint force on the first slide 201 side, allows the first carrier 2 to experience the main third-direction upward pressure on the first slide 201 side, ensuring the primary guiding function of the first slide 201. The first slide 201 provides more constraint and limitation on the first carrier 2 in multiple directions (the first slide 201 provides limitation in a second direction and rotation around a third direction), ensuring the dominant effect of the first slide 201, that is, ensuring more stable constraint on the first carrier 2. This is beneficial for maintaining the balance of the first carrier 2 during its movement relative to the base 1, improving the stability of the first carrier 2's movement, and facilitating the rapid and stable focusing / zooming of the camera module 100.

[0317] The force analysis corresponding to the above effect is shown below:

[0318] Force system equivalent: F2×L2-F1×L1=F_net×L s (Formula 1)

[0319] Wherein: F 合 --The resultant force of the first magnetic force F1 and the second magnetic force F2, F 合 =F1+F2;

[0320] L s —In the second direction, F 合 The distance between the position and the centerline of the first chute 201;

[0321] L1 -- The distance between the center of the first magnetic member 13 and the center line of the first groove 201 in the second direction;

[0322] L2 -- The distance between the center of the second magnetic member 14 and the first groove 201 in the second direction.

[0323] Understandably, if it is necessary for the first chute 201 to be subjected to the main pressure, then L s Need to satisfy: L s <L / 2 (Formula 2) to ensure the main guiding effect of the first slide 201. L is the distance between the center of the first slide 201 and the center of the second slide 202 in the second direction. When the second guide rod 92 acts as the fourth magnetic attractor 16, the smaller the distance between the second magnetic attractor 14 and the second guide rod 92, the greater the magnetic force generated, and the greater the component force (F2) of the magnetic force on the second magnetic attractor 14 in the third direction. For example, the second magnetic attractor 14 and the second guide rod 92 are set opposite each other in the third direction, and at this time L2≈L.

[0324] Taking L2≈L as an example, we perform a force analysis. Substituting Equation 2 into Equation 1, we get:

[0325] Analyzing the formula above, we can see that when F2 is less than F1, then... In other words, when F2 is less than F1, it is conducive to the above inequality holding, that is, it is conducive to making the resultant force F of F1 and F2 equal to F1. 合 The position is closer to the side where the first slide 201 is located, so as to ensure the main guiding effect of the first slide 201 and help maintain the balance of the first carrier 2 during movement.

[0326] In addition, when L s <L / 2, according to the principle of force balance, the supporting force F of the first guide rod 91 on the first slide groove 201 is <L / 2. N1 The supporting force F of the second guide rod 92 on the second slide groove 202 N2 The relation satisfies: F N2 <F N1 Compared to L sWhen F > L / 2 N2 >F N1 In this embodiment, the resultant force F1 and F2 is... 合 The position is set closer to the side where the first slide groove 201 is located, the contact force between the second slide groove 202 and the second guide rod 92 is smaller, and the friction between the second slide groove 202 and the second guide rod 92 can be smaller. That is, the torque generated by the friction between the second slide groove 202 and the second guide rod 92 on the carrier around the Y-axis (third direction) is reduced, which helps to reduce the risk of the carrier rotating around the Y-axis (third direction).

[0327] In some embodiments, in the second direction, the distance L1 between the center of the first magnetic member 13 and the first groove 201, and the distance L between the first groove 201 and the second groove 202 in the second direction, satisfy: L1 / L < 0.2. It is understood that in the second direction, the smaller the distance between the center of the first magnetic member 13 and the first groove 201, that is, the closer the first magnetic member 13 is to the first groove 201 in the second direction, the better it is to reduce F. 合 The distance between the position in the second direction and the first groove 201.

[0328] Figure 39 is a partial cross-sectional view of one embodiment of the structure shown in Figure 36 at point II.

[0329] As shown in Figure 39, the motor 10 may further include a fifth magnetic attractor 17, a sixth magnetic attractor 18, a seventh magnetic attractor 19, and an eighth magnetic attractor 191. The fifth magnetic attractor 17 and the seventh magnetic attractor 19 may be arranged opposite each other in a third direction. The sixth magnetic attractor 18 and the eighth magnetic attractor 191 may be arranged opposite each other in a third direction. The fifth magnetic attractor 17 may cooperate with the seventh magnetic attractor 19, and the sixth magnetic attractor 18 may cooperate with the eighth magnetic attractor 191, so that the second carrier 3, the third guide member, the fourth guide member, and the base 1 remain in contact.

[0330] Exemplarily, the fifth magnetic chuck 17 can be fixed to the third connecting arm 23 of the second carrier 3. The first magnetic unit 611 and the second magnetic unit 621 can serve as the seventh magnetic chuck 19. It is understood that the fifth magnetic chuck 17 can generate magnetic force with the first magnetic unit 611 and the second magnetic unit 621, and the fifth magnetic chuck 17 can be subjected to a third magnetic force in the direction toward the base plate 115 of the base 1. The sixth magnetic chuck 18 can interact with the eighth magnetic chuck 191, and the sixth magnetic chuck 18 can be subjected to a fourth magnetic force in the direction toward the base plate 115 of the base 1. The second carrier 3 can be subjected to a magnetic force in the direction toward the first guide rod 91. In the third direction, the magnetic forces received by the fifth magnetic chuck 17 and the sixth magnetic chuck 18 can press the second carrier 3 tightly onto the first guide rod 91, which can limit the second carrier 3 in the third direction and reduce the risk of the second carrier 3 slipping off the first guide rod 91.

[0331] In some embodiments, the second guide rod 92 can serve as the eighth magnetic attractor 191. The sixth magnetic attractor 18 can be a magnet, and the second guide rod 92 can be made of a magnetically conductive material and possess magnetic properties.

[0332] In other embodiments, the seventh magnetic member 19 may be a separate structural component. And / or, the eighth magnetic member 191 may be a separate structural component.

[0333] It is understood that the materials used for the fifth magnetic component 17, the sixth magnetic component 18, the seventh magnetic component 19, and the eighth magnetic component 191 can be selected with reference to the materials used for the first magnetic component 13, the second magnetic component 14, the third magnetic component 15, and the fourth magnetic component 16, and this application does not impose any restrictions.

[0334] In some embodiments, the third groove 301 of the second carrier 3 may be located on the side of the second carrier 3 closer to the second coil 5. It is understood that the arrangement of the second coil 5 close to the third groove 301 of the second carrier 3 reduces the lever arm of the driving force of the second carrier 3, thereby preventing the second carrier 3 from rotating too much around the Y-axis (third direction), causing the groove surface of the third groove 301 to detach from the slide bar (third guide 51), resulting in the second carrier 3 becoming unstable (floating upwards) and tilting.

[0335] For example, the following describes how, after passing multiphase current through n first coils 4, they are subjected to Ampere force in the magnetic gap 63, which in turn drives the first carrier 2 to move relative to the base 1 in the first direction.

[0336] Figure 40 is a schematic diagram of an assembly of n first coils 4 and m groups of first magnet units 611 according to one embodiment. The positions of the n first coils 4 after translation by a distance nA are indicated by dashed lines in Figure 40. During the movement of the first carrier 2, the relative positional relationship between the n first coils 4 and the m groups of second magnet units 621 is similar to that between the n first coils 4 and the m groups of first magnet units 611.

[0337] As shown in Figures 14, 34, and 40, m groups of first magnetic units 611 and m groups of second magnetic units 621 form a periodically changing magnetic field along a first direction within the magnetic gap 63. The period of the magnetic field can be k, where k is the length of one first magnetic unit 611 in the first direction. The magnetic field changes direction every 0.5k intervals.

[0338] In some embodiments, after a multiphase current is applied to the first coil 4, the first coil 4 moves within the magnetic field of the magnetic gap 63, cutting magnetic field lines. The first coil 4 can experience an Ampere force along a first direction. During the movement of the first coil 4, the direction of the Ampere force is influenced by both the direction of the current in the first coil 4 at that moment and the direction of the magnetic field at the position of the first coil 4. To ensure that the Ampere force on the first coil 4 is directed in a predetermined direction, the direction of the current in the first coil 4 can be adjusted according to the magnetic field distribution at different positions during the movement of the first coil 4 in the first direction. In other words, by adjusting the magnitude and direction of the current in the first coil 4 according to the magnetic field strength and direction, a unidirectional force on the first coil 4 can be achieved. For example, if the first coil 4 moves a displacement k in the first direction, the change in the current in the first coil 4 corresponds to one energizing period T. The energizing period T can be k. The magnetic field changes direction every 0.5k distance, corresponding to a change in the current direction every 0.5k displacement when the first coil 4 moves along the first direction.

[0339] In some embodiments, the first coil 4 includes a first arm 401 and a second arm 402 in the first direction. The length direction of the first arm 401 can be perpendicular to the first direction, and the length direction of the second arm 402 can also be perpendicular to the first direction. The length D1 of the first coil 4 in the first direction is greater than 0.5k. It is understood that when the first coil 4 is energized, the first arm 401 and the second arm 402 move in the magnetic field, cutting magnetic field lines. The first arm 401 and the second arm 402 are subjected to forces, and the resultant force of the two arms is approximately equal to the Ampere force experienced by the first coil 4 in the first direction. When current flows through the first coil 4, the current directions on the first arm 401 and the second arm 402 are different at the same time (indicated by arrows in the figure). The length D1 of the first coil 4 in the first direction is greater than 0.5k to prevent the first arm 401 and the second arm 402 from being in the same magnetic field at the same time, which would cause the Ampere forces on the first arm 401 and the second arm 402 to cancel each other out, resulting in zero driving force for the first coil 4 in the first direction. In other words, the length D1 of the first coil 4 in the first direction is greater than 0.5k, and the first arm 401 and the second arm 402 can be partially in one magnetic field and partially in adjacent magnetic fields, so that the Ampere force on the first coil 4 in the first direction is not zero. For example, when current flows through the first coil 4, the left arm (first arm 401) of the first coil 4, under the action of the first magnetic field, experiences a force towards the right. The right arm (second arm 402) of the first coil 4, under the action of the second magnetic field, also experiences a force towards the right. The forces on the first arm 401 and the second arm 402 are directed in the same direction, which helps to improve the working efficiency of the first coil 4.

[0340] In some embodiments, in the first direction, the distance A between the centerlines of two adjacent first coils 4 satisfies: A < k. It is understood that the distance A between the centerlines of two adjacent first coils 4 in the first direction is greater than the length D1 of the first coil 4 in the first direction, where D1 < A < k. This avoids the first coil 4 spanning three or more magnetic fields, preventing the magnetic field between the first arm 401 and the second arm 402 from being ineffective. Since the length of the first coil 4 in the first direction is less than k, the required installation space for the first coil 4 is smaller, which helps to reduce the size of the motor 10.

[0341] In some embodiments, the distance A between the centerlines of two adjacent first coils 4 in the first direction satisfies: xnA = jk, where x and j are both positive integers. The centerline of the first coil 4 is parallel to the winding plane of the first coil 4 and perpendicular to the first direction. It can be understood that by setting xnA = jk, that is, xnA is an integer multiple of the length (k) of a first magnet unit 611 / a second magnet unit 621 in the first direction. The period of change of the magnetic field in the magnetic gap 63 is k. After n first coils 4 are translated xnA along the first direction, the magnetic field strength and direction of the n first coils 4 at the positions before and after the translation of xnA can be the same. If the magnitude and direction of the current on the n first coils 4 at the positions before and after the translation can be set to be the same, the magnitude and direction of the Ampere force on the n first coils 4 can also be the same. The period of motion of the n first coils 4 is xnA. The n first coils move a length of xnA. The relative positions of the coils and the magnet units are repeated. Therefore, it is only necessary to achieve the unidirectional continuous movement of the n first coils 4 within the length range of xnA to achieve the infinite displacement of the n first coils 4 (multiple lengths of xnA).

[0342] Understandably, with a continuous magnetic field of period k, setting the motion period of the n coils to an integer multiple of the magnetic field period and the current period, and passing a continuous alternating current of period k through the n first coils 4, facilitates the continuous movement of the n first coils 4 along the first direction. Furthermore, when designing the alternating current passing through the first coils 4, it is sufficient to design a current of one motion period length (xnA), without needing to design the current for the longest distance the n first coils 4 move along the first direction, thus reducing design complexity.

[0343] For example, this is illustrated by introducing two-phase current through n first coils 4, meaning the n first coils 4 are two-phase drive coils, and the control chip energizes the n coils through two current output channels. The diagram uses n=2 as an example. It can be understood that when the first coils 4 are two-phase current drive coils, n is an integer multiple of 2.

[0344] For example, 2xA = jk, where x and j are both positive integers. The length of the first coil 4 in the first direction is greater than 0.5k. There is a gap between two adjacent coils, so the distance A between the center lines of two adjacent first coils 4 in the first direction is greater than the length of the first coil 4 in the first direction. That is, 0.5k < D1 < A < k. xk < 2xA < 2xk. xk < jk < 2xk. Finally, we get: x < j < 2x. Both x and j are positive integers. Considering the design difficulty (the smaller the movement period of the first coil 4, the easier the design) and the length of the n coils in the first direction (the smaller the length of the n coils in the first direction, the smaller the length of the first carrier 2 in the first direction can be), under the condition that x < j < 2x, x and j take the minimum value, resulting in a minimum value of 2 for x and a minimum value of 3 for j. When the two first coils 4 are two-phase drive coils, the movement period of the first coil 4 can be 3k. The distance A = 0.75k between the center lines of two adjacent first coils 4 in the first direction.

[0345] For example, the distance A between the center lines of two adjacent first coils 4 in the first direction satisfies an electrical angle of 270°, where the electrical angle is k.

[0346] In other embodiments, when the size of the motor 10 is limited, x and j can take other values, not limited to the minimum value, and A can also be other values.

[0347] In some implementations, the magnetic field directions of the n first coils 4 at different positions can be different at the same time. Therefore, the current flowing through the n first coils 4 can have a phase difference, and the current directions of the n first coils 4 at the same time can be different, so that the forces acting on the n first coils 4 at the same time are in the same direction. In this way, the Ampere forces acting on the n first coils 4 will not cancel each other out, and the efficiency of the motor 10 is high.

[0348] In some implementations, a two-phase current drive is used as an example, with n=2, for illustration. Figure 41 is a schematic diagram of one implementation of a sinusoidal current flowing through the two first coils 4 when they move in the first direction. Figure 42a is a simulation diagram of the forces acting on the two first coils 4 when they move in the first direction with sinusoidal currents of 90° phase difference. Figure 42b is a simulation diagram of the forces acting on the two first coils 4 when they move in the first direction with the same constant current. The horizontal axis in Figures 41 to 42b represents the displacement of the first coil 4 in the first direction, with the sign of the coordinate indicating the direction of movement of the first coil 4. The vertical axis in Figure 41 represents the magnitude of the current, with the sign indicating the direction of the current. The vertical axis in Figures 42a and 42b represents the magnitude of the force acting on the first coil 4, with the sign indicating the direction of the force. Different symbolic curves (coil 1 and coil 2) respectively illustrate the two first coils 4.

[0349] As shown in Figures 40 to 42b, the two first coils 4 are two-phase drive coils. A sinusoidal current can be passed through the two first coils 4, generating a sinusoidal thrust. The resultant force of the two first coils 4 drives the mover. The phase difference between two adjacent first coils 4 is 90° (one-quarter of a current-carrying cycle k). The resultant force of the two first coils 4 remains approximately constant, a fixed value. It is understandable that during the actual operation of the motor 10, when the two coils move along the first direction under actual force, the force is affected by the magnetic field distribution. The magnetic field strength distribution along the first direction does not absolutely conform to a sine curve, and the resultant force of the n first coils 4 may fluctuate slightly, for example, with fluctuations not exceeding 10%.

[0350] It is understandable that during the process of the n first coils 4 driving the first carrier 2 to move along the first direction, the resultant thrust of the n first coils 4 remains in a relatively stable state. The force on the first carrier 2 is roughly stable, and the acceleration of the first carrier 2 is controllable, which can reduce the displacement of the first carrier 2 beyond the expected stroke. When the motor 10 drives the first optical element 30 to move, the first carrier 2 can move to the preset position more accurately, avoiding the need for the first carrier 2 to retract, which is beneficial to achieving fast, accurate, and high-precision zooming / focusing of the camera module 100. In addition, the first coil 4 is supplied with a sinusoidal current. When designing the AC current supplied to the first coil 4, only half a cycle of current needs to be designed, which can further reduce the design difficulty and workload of the current of the first coil 4. Compared with three-phase coils, two-phase coils are beneficial to shortening the length of the first carrier 2 of the motor 10 in the first direction.

[0351] The principle that sinusoidal currents with a 90° phase difference can be passed through the two first coils 4 so that the resultant thrust of the two first coils 4 remains approximately constant with the movement of the first carrier 2 is as follows:

[0352] As can be seen from the simulation curve, when the two adjacent first coils 4 are spaced 0.75k apart, the same constant current is passed through the two first coils 4 respectively. The force on each first coil 4 changes approximately sinusoidally and has a phase difference of 90°.

[0353] When the current in the first coil 4 remains constant, the thrust of the first coil 4 is positively correlated with the magnetic field strength at which the first coil 4 is located.

[0354] When a unit constant current is passed through the coil, assuming

[0355] The first coil's thrust is: f1 = f0·sin(ωx + θ0)

[0356] The thrust of the second first coil 4 is: f2 = f0·sin(ωx + θ0 + θ2)

[0357] In the formula, the angular velocity ω = 2π / k, and x is the displacement of the first coil 4 in the first direction.

[0358] The current in the first coil 4 is: I1 = I0·sin(ωx + θ1)

[0359] The current in the second coil 4 is: I2 = I0·sin(ωx + θ1 + θ3)

[0360] The resultant force of the two first coils and four thrusts is: f 合 =f1·I1+f2·I2 =f0·I0·[sin(ωx+θ0)sin(ωx+θ1)+sin(ωx+θ0+θ2)sin(ωx+θ1+θ3)] =f0·I0·C

[0361] Where f0·I0 is a constant.

[0362] Where C is:

[0363] Among them, the constant term of C:

[0364] This constant term affects the resultant thrust f. 合 The magnitude of this term is maximized when θ0-θ1=0 and θ0+θ2-θ1-θ3=0, meaning the thrust is at its maximum.

[0365] The change of C with respect to x:

[0366] This factor affects the fluctuation of the resultant thrust. When θ2+θ3=±180°, this factor is 0, meaning the thrust fluctuation is minimal.

[0367] In summary: When the phase difference between the thrust and the current of the two-phase coil is 90°, the resultant thrust is maximized and the thrust fluctuation is minimized.

[0368] In some implementations, the current phase difference between two adjacent first coils 4 can satisfy: B = 2π(kA) / k, 2π = 360°. Thus, when one first coil 4 moves for one cycle, the phase difference of the current before and after the movement is: xnB = xn2π(kA) / k = 2πxn - 2πxnA / k = 2πxn - 2πj = 2π(xn - j). Here, n, x, and j are all positive integers, therefore (xn - j) is also an integer. The phase difference of one first coil 4 moving for one cycle is exactly an integer multiple of the energizing cycle, making it easier to design the current of the first coil 4 for one cycle. For example, the center distance A between two adjacent first coils 4 is 0.75k. When there are two n first coils 4, n = 2, A = 0.75k, and the phase difference of the energizing current between the two first coils 4 is 2π(kA) / k = 0.25 × 2π = 90°. x is 2, j is 3. The phase difference before and after a first coil 4 moves for one cycle is 2π.

[0369] In some embodiments, the operation of w second coils 5 driving the second carrier 3 to move can refer to the working principle of n first coils 4. In other embodiments, w can also be 1, that is, the number of second coils 5 is one, and the second coils 5 are single-phase coils.

[0370] It is understood that the motor 10 includes a first carrier 2 and a second carrier 3. The first carrier 2 can be used to mount the first optical element 30, and the second carrier 3 can be used to mount the second optical element 40. When both the first optical element 30 and the second optical element 40 are lens groups, the motor 10 can be used to drive the first optical element 30 to move to achieve a focusing function, or to drive the second optical element 40 to move to achieve a zoom function, or to simultaneously drive the first optical element 30 and the second optical element 40 to move to achieve a focusing / zoom function.

[0371] In other embodiments, the motor 10 may only have a first carrier 2 for driving an optical element to move. In this case, the motor 10 may not have a second carrier 3 and a second coil 5.

[0372] In some implementations, the same content as in the previous embodiments will not be repeated. Figure 43 is a schematic diagram of another implementation of the n first coils 4 and the first magnetic track 61 shown in Figure 4.

[0373] It is understandable that when the first coil 4 is a two-phase drive coil, the number of the first coil 4 can be equal to 2 or an integer greater than 2. The previous embodiment's accompanying drawings illustrated that the number of the two-phase drive first coil 4 is 2. The following describes an embodiment with more than two two-phase drive coils.

[0374] As shown in Figure 43, two adjacent first coils 4 constitute a first coil group 403. The motor 10 may include multiple first coil groups 403. The multiple first coil groups 403 may be spaced apart along a first direction. The spacing between any two adjacent first coils 4 in the first direction is the same, which is 0.75k. It can be understood that compared to the scheme of setting only one first coil group 403, this embodiment sets multiple first coil groups 403. The multiple first coil groups 403 are fixedly connected to the first carrier 2, which can increase the thrust on the first carrier 2, which is beneficial to improving the speed at which the motor 10 drives the first optical element 30 to move, and is beneficial to realizing the fast focusing / zooming of the camera module 100.

[0375] For example, the number of first coil groups 403 can be two, and the number of first coils 4 can be four, n=4, A=0.75k. Adjacent first coils 4 can be supplied with sinusoidal currents with a 90° phase difference. For example, the current in the first first coil 4 is: The current in the second first coil 4 is: The current in the third coil 4 is: The current in the fourth first coil 4 is: Where x is the displacement of the first coil 4 in the first direction. T is the energizing period of the first coil 4, and the value of T can be k. 90° = 0.25k.

[0376] In some implementations, the two spaced first coils 4 can also be connected in series (e.g., the first first coil 4 and the third first coil 4 are connected in series, and the second first coil 4 and the fourth first coil 4 are connected in series) to achieve current inversion and save current output channels of the control chip.

[0377] In some implementations, the same content as in the previous embodiments will not be repeated. Figure 44 is a schematic diagram of another implementation of the n first coils 4 and the first magnetic track 61 shown in Figure 4. In this embodiment, the n first coils 4 can also be three-phase drive coils, and three-phase current is passed through the n first coils 4. n can be an integer multiple of 3, and n is not limited to 3. Figure 44 uses n=3 as an example for illustration.

[0378] For example, 3xA = jk, where x and j are both positive integers. The length of the first coil 4 in the first direction is greater than 0.5k. There is a gap between two adjacent coils, so the distance A between the center lines of two adjacent first coils 4 in the first direction is greater than the length of the first coil 4 in the first direction. That is, 0.5k < A < k. 1.5xk < 3xA < 3xk. 1.5xk < jk < 3xk. Finally, we get: 1.5x < j < 3x. Since x and j are both positive integers, considering the design difficulty (the smaller the motion period of the first coil 4, the easier the design) and the length of n first coils 4 in the first direction (the smaller the length of n coils in the first direction, the smaller the length of the first carrier 2 in the first direction can be), under the condition of 1.5x < j < 3x, x and j take the minimum value, resulting in a minimum value of x of 1 and a minimum value of j of 2. When the three first coils 4 are two-phase drive coils, the motion period of the first coil 4 can be 2k. The distance A between the center lines of two adjacent first coils 4 in the first direction is 2k / 3.

[0379] For example, there are three first coils 4, n=3, A=2k / 3, and adjacent first coils 4 can be supplied with sinusoidal currents with a phase difference of 120° (kA=k-2k / 3=k / 3). For example, the current of the first coil 4 is: The current in the second first coil 4 is: The current in the third coil 4 is: Where x is the displacement of the first coil 4 in the first direction. T is the energizing period of the first coil 4. 120° = T / 3 = k / 3.

[0380] The number of three-phase drive coils is not limited to three. Greater thrust can be achieved through coil arrays, that is, the number of coils can be twice or more than three.

[0381] In some embodiments, the same content as in the previous embodiments will not be repeated. Figure 45 is a schematic diagram of another embodiment of the first magnetic track 61 shown in Figure 4.

[0382] As shown in Figure 45, the first magnetic unit 611 may include a first magnet 6111 and a second magnet 6112. The first magnet 6111 and the second magnet 6112 can be arranged along a first direction, and the polarity direction of the first magnet 6111 may be opposite to that of the second magnet 6112. Alternatively, the polarity direction of the first magnet 6111 may intersect the first direction with the polarity direction of both the first magnet 6112 and the second magnet 6112. The sum of the lengths of the first magnet 6111 and the second magnet 6112 in the first direction is k. Thus, the first magnetic unit 611 employs a bipolar magnet array, simplifying the manufacturing process and assembly.

[0383] It is understandable that the arrangement direction of the first magnet 6111 and the second magnet 6112 is not completely parallel to the arrangement direction of the m groups of first magnet units 611. The arrangement direction of the first magnet 6111 and the second magnet 6112 can have a small angle with the arrangement direction of the m groups of first magnet units 611, which can be less than or equal to 10°. For example, the angle can be 2°, 3°, 5°, or 8°.

[0384] In some embodiments, the length of the first magnet 6111 in the first direction can be the same as the length of the second magnet 6112 in the first direction. For example, the length of the first magnet 6111 in the first direction can be 0.5k. In this way, the magnetic field of the m groups of first magnet units 611 is more uniformly distributed along the first direction.

[0385] In some embodiments, the same content as in the previous embodiments will not be repeated. Figure 46 is a schematic diagram of another embodiment of the first magnetic track 61 shown in Figure 4. Figure 47 is a cross-sectional view of another embodiment of the m groups of first magnetic units 611 and m groups of second magnetic units 621 shown in Figure 12 from another angle. The first magnetic unit 611 and the second magnetic unit 621 in Figure 47 both adopt the structure shown in Figure 46.

[0386] As shown in Figure 46, the first magnet unit 611 may include a first magnet 6111, a second magnet 6112, a third magnet 6113, and a fourth magnet 6114. The first magnet 6111, second magnet 6112, third magnet 6113, and fourth magnet 6114 may be arranged along a first direction. The fourth magnet 6114 is located on the side of the second magnet 6112 away from the first magnet 6111. The polarity direction of the fourth magnet 6114 is different from the polarity directions of the first magnet 6111, the second magnet 6112, and the third magnet 6113. The polarity direction of the fourth magnet 6114 intersects the first direction. The sum of the lengths of the first magnet 6111, the second magnet 6112, the third magnet 6113, and the fourth magnet 6114 in the first direction is k.

[0387] Understandably, by setting a fourth magnet 6114, the fourth magnet 6114 can form a Hellbeck magnet array with the first magnet 6111 and the second magnet 6112 in the two adjacent first magnet units 611, further enhancing the magnetic field strength near the m groups of first magnet units 611, which is beneficial for increasing magnetic thrust. The first magnet 6111 and the second magnet 6112 in the first magnet unit 611 form an NS magnetic field, and also form an NS magnetic field with the adjacent first magnet units 611. In this way, the multiple NS magnetic fields arranged along the first direction constitute the magnetic field of the m groups of first magnet units 611.

[0388] In some embodiments, the lengths of the third magnet 6113 and the fourth magnet 6114 in the first direction can be the same. This makes the magnetic field strength within the magnetic gap 63 in the first direction more uniform.

[0389] In some embodiments, when the first magnet unit 611 further includes a fourth magnet 6114, the first magnetic track 61 may also include a supplementary magnet 6115. The supplementary magnet 6115 and m groups of first magnet units 611 can be arranged along a first direction to form a magnet array. The supplementary magnet 6115 is located on one side of the m groups of first magnet units 611, and is adjacent to the first magnets 6111. The magnetic field direction of the supplementary magnet 6115 can be the same as the magnetic field direction of the fourth magnet 6114. It is understood that by providing the supplementary magnet 6115, the length of the magnetic field in the first direction can be further extended.

[0390] In some embodiments, the same content as in the previous embodiments will not be repeated. Figure 48 is a partially exploded view of another embodiment of the motor 10 shown in Figure 3.

[0391] As shown in Figure 48, the motor 10 may include a base 1, a first magnetic chuck 13, a second magnetic chuck 14, a fifth magnetic chuck 17, a sixth magnetic chuck 18, a top cover 98, a first carrier 2, a second carrier 3, n first coils 4, a first guide 41, a second guide 42, w second coils 5, a third guide 51, a fourth guide 52, a first magnetic rail 61, a second magnetic rail 62, a magnetic grating 71, an electrical connection assembly 8, a first tunneling magnetoresistive effect sensor 72, a second tunneling magnetoresistive effect sensor 73, a magnetic grating 71, and a driver chip 99 (IC). The electrical connection assembly 8 may include a first electrical connector 81, a second electrical connector 82, a first power supply terminal 831, and a second power supply terminal 832.

[0392] It is understood that the top cover 98, the first magnetic chuck 13, the second magnetic chuck 14, the fifth magnetic chuck 17, the sixth magnetic chuck 18, n first coils 4, w second coils 5, the first magnetic rail 61, the second magnetic rail 62, the magnetic grating 71, the electrical connection assembly 8, the magnetic grating 71, the first tunnel magnetoresistive sensor 72, the second tunnel magnetoresistive sensor 73, and the driving chip 99 (IC) can be configured in the same way as in the previous embodiment. In this embodiment, the first guide 41, the second guide 42, the third guide 51, and the fourth guide 52 can be ball bearings. The first carrier 2 and the second carrier 3 are connected to the base 1 by ball bearings. The specific implementation method of the first carrier 2 and the second carrier 3 being connected to the base 1 by ball bearings will be described below.

[0393] Figure 49 is a schematic diagram of one embodiment of the base 1 shown in Figure 48.

[0394] As shown in Figure 49, the base plate 115 of the base 1 may be provided with a first guide groove 1151 and a second guide groove 1152. The opening of the first guide groove 1151 may face the motion space 1001. The opening of the second guide groove 1152 may face the motion space 1001. The first guide groove 1151 and the second guide groove 1152 may be arranged at intervals along a second direction. The extension direction of the first guide groove 1151 and the extension direction of the second guide groove 1152 may both be parallel to the first direction.

[0395] Figure 50 is a schematic diagram of one embodiment of the second carrier 3 shown in Figure 48. Figure 51 is a schematic diagram of the structure shown in Figure 50 from another angle.

[0396] As shown in Figures 50 and 51, the second carrier 3 may be provided with a third slide groove 301 and a fourth slide groove 302. The openings of the third slide groove 301 and the fourth slide groove 302 may be located on the bottom surface 38 of the second carrier 3. The third slide groove 301 and the fourth slide groove 302 may be arranged at intervals along a second direction. The extending direction of the third slide groove 301 may be parallel to the first direction. The extending direction of the fourth slide groove 302 may be parallel to the first direction.

[0397] It is understandable that the third slide 301 and the fourth slide 302 can be continuous slides or multiple slides with intervals (as shown in Figure 51).

[0398] In some embodiments, the third groove 301 may have a plurality of third limiting structures 305. The plurality of third limiting structures 305 may be arranged at intervals along the first direction. For example, the third limiting structure 305 may include a third limiting surface 3011 and a fourth limiting surface 3012, which may be arranged in the second direction and are set at an included angle.

[0399] For example, the bottom of the groove wall of the fourth groove 302 may include a sixth limiting surface 3021.

[0400] Figure 52 is an assembly schematic diagram of one embodiment of the partial structure shown in Figure 48. Figure 53 is a partial cross-sectional view of one embodiment of the structure shown in Figure 52 at JJ. Figure 54 is a partial cross-sectional view of one embodiment of the structure shown in Figure 52 at KK. Figure 55 is a partial cross-sectional view of one embodiment of the structure shown in Figure 52 at LL.

[0401] As shown in Figures 52 to 55, the third guide member 51 (ball bearing) is rotatably connected within the third slide groove 301 and the first guide groove 1151. Exemplarily, the third guide member 51 abuts against the third limiting surface 3011 and the fourth limiting surface 3012. The third limiting surface 3011 and the fourth limiting surface 3012 can limit the third guide member 51 in a second direction.

[0402] In some embodiments, the fourth guide member 52 (ball bearing) is rotatably connected within the fourth slide groove 302 and the second guide groove 1152. The fourth guide member 52 abuts against the bottom of the second slide groove 202. Exemplarily, the second guide member may abut against the sixth limiting surface 3021 of the fourth slide groove 302.

[0403] It is understood that, in this embodiment, the arrangement of the first guide member 41, the second guide member 42 and the first carrier 2 can refer to the arrangement of the third guide member 51, the fourth guide member 52 and the second carrier 3.

[0404] It is understood that in this embodiment, the first guide 41, the second guide 42, the third guide 51, and the fourth guide 52 can be ball bearings. The first carrier 2 can move relative to the base 1 in a first direction through the cooperation of the first guide 41 with the first sliding groove 201 of the first carrier 2 and the first guide groove 1151 of the base 1, and the cooperation of the second guide 42 with the second sliding groove 202 of the first carrier 2 and the second guide groove 1152 of the base 1. The second carrier 3 can move relative to the base 1 in a first direction through the cooperation of the third guide 51 with the third sliding groove 301 of the second carrier 3 and the first guide groove 1151, and the cooperation of the fourth guide 52 with the fourth sliding groove 302 of the second carrier 3 and the second guide groove 1152. Compared with the scheme where the first guide 41, the second guide 42, the third guide 51, and the fourth guide 52 are sliding rods, the ball bearings have a smaller coefficient of friction with the first carrier 2 and the second carrier 3, which helps to reduce the resistance of the first carrier 2 and the second carrier 3 moving relative to the base, thereby reducing the power consumption of the motor 10.

[0405] In some embodiments, a portion of the base 1 can be used as a fourth magnetic element (not shown). In this way, the second magnetic element 14 and the fourth magnetic element can have a magnetic force.

[0406] In some embodiments, the same content as in the previous embodiments will not be repeated. Figure 56 is a partially exploded view of another embodiment of the motor 10 shown in Figure 3.

[0407] As shown in Figure 56, the motor 10 may include a base 1, a first magnetic chuck 13, a second magnetic chuck 14, a fifth magnetic chuck 17, a sixth magnetic chuck 18, a top cover 98, a first carrier 2, a second carrier 3, n first coils 4, w second coils 5, a first magnetic rail 61, a second magnetic rail 62, a magnetic grid 71, an electrical connection assembly 8, a first guide rod 91, a second guide rod 92, a first guide sleeve 43, a second guide sleeve 44, a first tunnel magnetoresistive effect sensor 72, a second tunnel magnetoresistive effect sensor 73, a magnetic grid 71, and a driver chip 99 (IC). The electrical connection assembly 8 may include a first electrical connector 81, a second electrical connector 82, a first power supply terminal 831, and a second power supply terminal 832.

[0408] It is understandable that the top cover 98, the first magnetic clasp 13, the second magnetic clasp 14, the fifth magnetic clasp 17, the sixth magnetic clasp 18, the n first coils 4, the w second coils 5, the first magnetic rail 61, the second magnetic rail 62, the magnetic grating 71, the electrical connection assembly 8, the first tunnel magnetoresistive effect sensor 72, the second tunnel magnetoresistive effect sensor 73, the magnetic grating 71, and the driving chip 99 (IC) can be configured in the same way as in the previous embodiment.

[0409] In this embodiment, the first guide member 41 may include a first guide rod 91 and a first guide sleeve 43. The second guide member 42 may include a first guide rod 91 and a second guide sleeve 44. The third guide member 51 may include a first guide rod 91 and a third guide sleeve 53. The fourth guide member 52 may include a first guide rod 91 and a fourth guide sleeve 54. The first carrier 2 can be slidably connected to the base 1 via the first guide rod 91, the second guide rod 92, the first guide sleeve 43, and the second guide sleeve 44; the second carrier 3 can be slidably connected to the base 1 via the first guide rod 91, the second guide rod 92, the third guide sleeve 53, and the fourth guide sleeve 54. The following will describe this in detail with reference to the accompanying drawings.

[0410] Figure 57 is a schematic diagram of one embodiment of the second carrier 3 shown in Figure 56. Figure 58 is a schematic diagram of the structure shown in Figure 57 from another angle.

[0411] As shown in Figures 57 and 58, the second carrier 3 may be provided with a third slide groove 301 and a fourth slide groove 302. The openings of the third slide groove 301 and the fourth slide groove 302 may be located on the bottom surface 38 of the second carrier 3. The extending direction of the third slide groove 301 is parallel to the first direction, and the extending direction of the fourth slide groove 302 is parallel to the first direction. The third slide groove 301 and the fourth slide groove 302 are spaced apart along the second direction, and the first and second directions intersect. The third slide groove 301 and the fourth slide groove 302 may be arranged spaced apart along the second direction.

[0412] In some embodiments, the second carrier 3 may further be provided with a first guide sleeve groove 303 and a second guide sleeve groove 304. The opening of the first guide sleeve groove 303 may be located within a third sliding groove 301 and face the bottom surface 38 of the second carrier 3. The extending direction of the first guide sleeve groove 303 is parallel to the first direction. The opening of the second guide sleeve groove 304 may be located within a fourth sliding groove 302 and face the bottom surface 38 of the second carrier 3. The extending direction of the second guide sleeve groove 304 is parallel to the first direction.

[0413] It is understood that there can be multiple first guide sleeve grooves 303, which can be arranged at intervals along the first direction. There can be one or multiple second guide sleeve grooves 304. When there are multiple second guide sleeve grooves 304, they can be arranged at intervals along the first direction. The figure illustrates an example with two first guide sleeve grooves 303 and one second guide sleeve groove 304.

[0414] Figure 59 is an assembly schematic diagram of one embodiment of the third guide sleeve 53, fourth guide sleeve 54, second carrier 3, first guide rod 91, and second guide rod 92 shown in Figure 56. Figure 60 is a schematic diagram of the structure shown in Figure 59 from another angle.

[0415] As shown in Figures 59 and 60, the third guide sleeve 53 can be fixedly connected within the third sliding groove 301. Exemplarily, the third guide sleeve 53 can be fixed within the first guide sleeve groove 303 and sleeved on the first guide rod 91. The first guide rod 91 is slidably connected to the first guide sleeve 43. It is understood that the number of third guide sleeves 53 can be the same as the number of first guide sleeve grooves 303.

[0416] For example, the fourth guide sleeve 54 can be fixed within the second guide sleeve groove 304 and sleeved on the second guide rod 92. The second guide rod 92 can be slidably connected to the first guide sleeve 43. It is understood that the number of fourth guide sleeves 54 can be the same as the number of second guide sleeve grooves 304.

[0417] For example, the third guide sleeve 53 can be made of self-lubricating copper or a copper alloy. This reduces the friction between the third guide sleeve 53 and the first guide rod 91, which is beneficial for the rapid and smooth movement of the carrier. It is understood that the first guide sleeve 43 and the first guide rod 91, the second guide sleeve 44 and the second guide rod 92, and the fourth guide sleeve 54 and the second guide rod 92 can all be configured with reference to the third guide sleeve 53 and the first guide rod 91; further details are omitted here.

[0418] Figure 61 is an assembly schematic diagram of one embodiment of the partial structure shown in Figure 56. Figure 62 is a partial cross-sectional view of one embodiment of the structure shown in Figure 61 at MM. Figure 63 is a partial cross-sectional view of one embodiment of the structure shown in Figure 61 at NN. Figure 64 is a partial cross-sectional view of one embodiment of the structure shown in Figure 61 at OO.

[0419] As shown in Figures 61 to 64, the third guide sleeve 53 can be cylindrical. The third guide sleeve 53 may include an inner wall surface 431 and an outer wall surface 432. The first guide rod 91 abuts against the inner wall surface 431 of the third guide sleeve 53. The outer wall surface 432 of the third guide sleeve 53 can be fixedly connected within the first guide sleeve groove 303. It is understood that the shape of the inner wall surface 431 of the first guide sleeve groove 303 can be adapted to the surface shape of the third guide sleeve 53. In this embodiment, the third guide sleeve 53 can be a third limiting structure 305. The third guide sleeve 53 is fixed within the first guide sleeve groove 303, and the third limiting surface 3011 and the fourth limiting surface 3012 can be a portion of the inner wall surface 431 of the third guide sleeve 53.

[0420] It is understandable that the first carrier 2 can be slidably connected to the base 1 via the first guide rod 91, the second guide rod 92, the first guide sleeve 43, and the second guide sleeve 44. Similarly, the second carrier 3 can be slidably connected to the base 1 via the first guide rod 91, the second guide rod 92, the third guide sleeve 53, and the fourth guide sleeve 54. The first guide sleeve 43 can be the first limiting structure 203.

[0421] Understandably, the first guide sleeve 43, as the first limiting structure 203, has a better limiting effect on the first guide rod 91, which can reduce the risk of the first carrier 2 falling off the first guide rod 91.

[0422] In some embodiments, the same content as in the previous embodiments will not be repeated. Figure 65 is a partially exploded view of another embodiment of the motor 10 shown in Figure 3. Figure 66 is an assembly diagram of one embodiment of the first carrier 2 and the first coil 4 shown in Figure 65. Figure 67 is an assembly diagram of one embodiment of the partial structure shown in Figure 65. Figure 68 is a schematic diagram of the structure shown in Figure 67 from another angle. Figure 69 is a partial cross-sectional view of one embodiment of the structure shown in Figure 68 at PP. Figure 70 is a partial cross-sectional view of one embodiment of the structure shown in Figure 68 at QQ.

[0423] As shown in Figures 65 to 70, the motor 10 may include a base 1, a first magnetic chuck 13, a second magnetic chuck 14, a fifth magnetic chuck 17, a sixth magnetic chuck 18, a top cover 98, a first carrier 2, a second carrier 3, n first coils 4, w second coils 5, a first magnetic track 61, a magnetic grating 71, an electrical connection assembly 8, a first guide rod 91, a second guide rod 92, a first guide sleeve 43, a second guide sleeve 44, a first tunnel magnetoresistive effect sensor 72, a second tunnel magnetoresistive effect sensor 73, a magnetic grating 71, and a driver chip 99 (IC). The electrical connection assembly 8 may include a first electrical connector 81, a second electrical connector 82, a first power supply terminal 831, and a second power supply terminal 832.

[0424] It is understood that the base 1, top cover 98, second magnetic clasp 14, sixth magnetic clasp 18, n first coils 4, w second coils 5, first magnetic track 61, magnetic grating 71, electrical connection assembly 8, first tunnel magnetoresistive effect sensor 72, second tunnel magnetoresistive effect sensor 73, magnetic grating 71, and driving chip 99 (IC) can be configured in accordance with the configuration of the base 1, top cover 98, second magnetic clasp 14, sixth magnetic clasp 18, n first coils 4, w second coils 5, first magnetic track 61, magnetic grating 71, electrical connection assembly 8, first tunnel magnetoresistive effect sensor 72, second tunnel magnetoresistive effect sensor 73, magnetic grating 71, and driving chip 99 (IC) in the previous embodiment.

[0425] In some embodiments, the first magnetic attractor 13 may be a magnet. The first magnetic attractor 13 is disposed opposite to the first guide rod 91 in the third direction. Exemplarily, the first guide rod 91 may be made of a magnetically conductive material. Furthermore, a portion of the first guide rod 91 may serve as a third magnetic attractor 15, used to hold the first carrier 2 in contact with the first guide member 41 and the base 1. In other words, the first magnetic attractor 13 and the first guide rod 91 may interact to press the first carrier 2 against the first guide rod 91 in the X-axis direction.

[0426] In other embodiments, the motor 10 may also be provided with a third magnetic member 15, which may be fixedly connected to the base 1 and disposed opposite to the first magnetic member 13 in a third direction.

[0427] In some embodiments, the arrangement of the second magnetic member 14 and the fourth magnetic member 16 can refer to the arrangement of the second magnetic member 14 and the fourth magnetic member 16 shown above, and will not be repeated here.

[0428] In some embodiments, the fifth magnetic attractor 17 can be a magnet. Part of the first guide rod 91 can serve as a seventh magnetic attractor 19, which can interact with the fifth magnetic attractor 17 to generate a third magnetic force.

[0429] It is understood that in this embodiment, the first guide rod 91 can be made of a magnetic material. The first guide rod 91 can serve as the third magnetic attractor 15, and the first guide rod 91 can also serve as the seventh magnetic attractor 19. In this way, the first magnetic attractor 13 does not need to borrow the first magnet unit 611, and the distance between the first magnetic attractor 13 and the bottom surface 28 of the first carrier 2 in the third direction can be smaller, and the distance between the fifth magnetic attractor 17 and the bottom surface 38 of the second carrier 3 in the third direction can also be smaller.

[0430] This application describes several motors 10 with reference to the accompanying drawings. The motor 10 may include a base 1, a first carrier 2, a first guide 41, and a second guide 42. The bottom surface 28 of the first carrier 2 faces the bottom plate 115 of the base 1. The first carrier 2 is provided with a first groove 201 and a second groove 202. The opening of the first groove 201 is located on the bottom surface 28 of the first carrier 2, and the opening of the second groove 202 is also located on the bottom surface 28 of the first carrier 2. The extending direction of the first groove 201 is parallel to a first direction, and the extending direction of the second groove 202 is parallel to the first direction. The first groove 201 and the second groove 202 are spaced apart along a second direction, and the first and second directions intersect. In the extending direction of the first groove 201, the first groove 201 has a plurality of first limiting structures 203, which are spaced apart along the first direction. The first guide 41 abuts against the first limiting structure 203. The second guide 42 is located in the second groove 202. The first carrier 2 moves relative to the base 1 in a first direction through the cooperation of the first guide member 41 and the first slide groove 201, and the cooperation of the second guide member 42 and the second slide groove 202. The motor also includes n first coils 4, m sets of first magnet units 611 and m sets of second magnet units 621. The first magnet units 611 and the second magnet units 621 are both fixedly connected to the base 1. The first coils 4 are fixedly connected to the side of the first carrier 2. The first carrier 2 is used to mount the first optical element. n and m are integers greater than or equal to 2, and m is greater than n. The n first coils 4, the m sets of first magnet units 611 and the m sets of second magnet units 621 are arranged along the first direction. The m sets of first magnet units 611 and the m sets of second magnet units 621 are arranged at intervals along the second direction, forming a magnetic gap 63. The m sets of first magnet units 611 and the m sets of second magnet units 621 are arranged in a one-to-one correspondence, and the polarity directions of the first magnet units 611 and the second magnet units 621 are arranged opposite to each other in the second direction. n first coils 4 are located within the magnetic gap 63 and face m groups of first magnet units 611 and m groups of second magnet units 621. After multiphase current is passed through the n first coils 4, they are used to drive the first carrier 2 to move relative to the base 1 in the first direction. In the second direction, the distance between the first coil 4 and the first slide groove 201 is less than the distance between the first coil 4 and the second slide groove 202.

[0431] It is understood that the first slide groove 201 has multiple first limiting structures 203 arranged at intervals along the first direction, and the first guide member 41 abuts against the first limiting structure 203. The first guide member 41 and the first slide groove 201 have multiple contact points in the first direction. The multiple first limiting structures 203 can be used to constrain the degree of freedom of the first carrier 2 to rotate about a third direction, reduce the risk of the first carrier 2 rotating about an axis parallel to the third direction during movement, and help improve the stability of the movement of the first carrier 2.

[0432] The m groups of first magnetic units 611 and m groups of second magnetic units 621 are arranged in a one-to-one correspondence. The magnetic lines of force of the m groups of first magnetic units 611 and m groups of second magnetic units 621 can be quickly closed, forming a periodically changing magnetic field along the first direction within the magnetic gap 63. Compared with the scheme of setting the first magnetic unit 611 or the second magnetic unit 621 only on one side of the first coil 4, this embodiment sets magnetic units on both sides of the first coil 4. The magnetic flux density within the magnetic gap 63 is greater. When the number of coils is the same, the Ampere force received by n first coils 4 after being energized is greater. As a result, the speed at which the first carrier 2 moves when the first coil 4 drives it can be faster, which is beneficial for rapid focusing or zooming. Furthermore, the direction of the magnetic field within the magnetic gap 63 is mostly or entirely perpendicular to the winding plane of the first coil 4. The Ampere force received by the first coil 4 after being energized is parallel to the winding plane of the first coil 4 or has a small angle with the winding plane. The first coil 4 exerts a greater force to move the first carrier 2 in the first direction, allowing the first carrier 2 to move at a faster speed, which is beneficial for rapid focusing or zooming. In addition, the Ampere force on the first coil 4 has a smaller component in the direction perpendicular to the winding plane, and the force on the first carrier 2 in the non-moving direction is smaller, making the first carrier 2 less prone to shaking, which is beneficial for the smooth operation of the motor 10 and can reduce the noise when the motor 10 drives the first optical element 30.

[0433] Torque is calculated as lever arm multiplied by torque. During the movement of the first carrier 2 relative to the base 1 in the first direction, the magnitude of the rotational tendency of the first carrier 2 around the Y-axis (third direction) is closely related to the magnitude of the driving force on the first coil 4 and the distance between the first coil 4 and the first slide groove 201 in the second direction. Compared to placing the first coil 4 closer to the second slide groove 202 in the second direction, this embodiment places the first coil 4 closer to the first slide groove 201, which reduces the lever arm of the driving force. When the current and torque of the first coil 4 remain constant, reducing the driving force lever arm L1 can reduce the torque, thereby reducing the rotational tendency of the first carrier 2 around the Y-axis (third direction). This prevents the first carrier 2 from rotating too much around the Y-axis (third direction), causing it to detach from the first guide member and resulting in unstable posture (floating upwards) and tilting. The first coil 4 is installed on one side of the first slide groove 201 of the first carrier 2, which is beneficial for the stable movement of the first carrier 2 of the motor 1, enabling accurate focusing / zooming of the camera module 100.

[0434] It is understood that, without conflict, the embodiments and features in the embodiments of 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.

[0435] It is understood that all the above 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.

[0436] The above description is merely a specific embodiment of this application, but 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 (10), characterized in that, It includes a base (1), a first carrier (2), a first guide (41), and a second guide (42), wherein the first carrier (2) is movably connected to the base (1); The first carrier (2) is provided with a first slide groove (201) and a second slide groove (202). The extension direction of the first slide groove (201) is parallel to the first direction, and the extension direction of the second slide groove (202) is parallel to the first direction. The first slide groove (201) and the second slide groove (202) are spaced apart along the second direction, and the first direction and the second direction intersect. The first slide groove (201) has a plurality of first limiting structures (203), the plurality of first limiting structures (203) are arranged at intervals along the first direction, the first guide (41) abuts against the first limiting structure (203), and the second guide (42) is disposed in the second slide groove (202); The motor (10) further includes n first coils (4), m sets of first magnet units (611) and m sets of second magnet units (621), the first magnet units (611) and the second magnet units (621) are all fixedly connected to the base (1), the first coils (4) are fixedly connected to the side of the first carrier (2), n and m are integers greater than or equal to 2, and m is greater than n; n first coils (4), m groups of first magnet units (611) and m groups of second magnet units (621) are all arranged along the first direction. The m groups of first magnet units (611) and m groups of second magnet units (621) are arranged at intervals along the second direction and form a magnetic gap (63). The m groups of first magnet units (611) and m groups of second magnet units (621) are arranged in a one-to-one correspondence. The polarity direction of the first magnet unit (611) and the polarity direction of the second magnet unit (621) are arranged opposite to each other in the second direction and are perpendicular to the winding plane of the first coil (4). n first coils (4) are located in the magnetic gap (63) and face m groups of first magnet units (611) and m groups of second magnet units (621). After multiphase current is passed through the n first coils (4), they are used to drive the first carrier (2) to move relative to the base (1) in the first direction. In the second direction, the distance between the first coil (4) and the first slide (201) is less than the distance between the first coil (4) and the second slide (202).

2. The motor (10) according to claim 1, characterized in that, The first limiting structure (203) includes a first limiting surface (2011) and a second limiting surface (2012) arranged along the second direction, and the first guide (41) abuts between the first limiting surface (2011) and the second limiting surface (2012).

3. The motor (10) according to claim 1 or 2, characterized in that, The base (1) includes a bottom plate (115) and a side plate (117). The side plate (117) is fixedly connected to the periphery of the bottom plate (115). The side plate (117) and the bottom plate (115) enclose a movement space (1001). The first carrier (2) is located in the movement space (1001). The bottom surface (28) of the first carrier (2) faces the bottom plate (115), and the side surface of the first carrier (2) faces the side plate (117). The openings of the first groove (201) and the second groove (202) are both located on the bottom surface (28) of the first carrier (2).

4. The motor (10) according to claim 2, characterized in that, The first limiting surface (2011) and the second limiting surface (2012) are the groove wall surfaces of the first sliding groove (201).

5. The motor (10) according to claim 4, characterized in that, The first guide member (41) is a first guide rod (91), which is fixedly connected to the base (1) and is slidably connected in the first groove (201). Alternatively, the first guide member (41) is a ball bearing, the base (1) is provided with a first guide groove (1151), the opening of the first guide groove (1151) faces the first carrier (2), the first guide groove (1151) and the first slide groove (201) are arranged opposite to each other, and the ball bearing rolls and connects the first slide groove (201) and the first guide groove (1151).

6. The motor (10) according to any one of claims 1 to 3, characterized in that, The first guide member (41) includes a first guide sleeve (43) and a first guide rod (91). The first guide rod (91) is fixedly connected to the base (1). The first guide sleeve (43) is fixedly connected to the first slide groove (201). The first guide sleeve (43) is cylindrical. The first guide sleeve (43) is sleeved on the first guide rod (91) and slidably connected to the first guide rod (91). The first guide sleeve (43) is the first limiting structure (203).

7. The motor (10) according to any one of claims 1 to 4, characterized in that, The motor (10) further includes a first magnetic chuck (13) and a third magnetic chuck (15). The first magnetic chuck (13) is fixedly connected to the first carrier (2), and the third magnetic chuck (15) is fixedly connected to the base (1). The first magnetic chuck (13) and the third magnetic chuck (15) are arranged opposite each other in a third direction, which is perpendicular to the first direction and the second direction. In the second direction, the distance L1 between the first magnetic attractor (13) and the first slide (201) is less than the distance L3 between the first magnetic attractor (13) and the second slide (202).

8. The motor (10) according to claim 7, characterized in that, The motor (10) further includes a second magnetic member (14) and a fourth magnetic member (16). The second magnetic member (14) is fixedly connected to the first carrier (2), and the fourth magnetic member (16) is fixedly connected to the base (1). The second magnetic member (14) and the fourth magnetic member (16) are arranged opposite to each other in the third direction. The distance L4 between the second magnetic attractor (14) and the second slide (202) is less than the distance L2 between the second magnetic attractor (14) and the first slide (201).

9. The motor (10) according to claim 8, characterized in that, In the third direction, the first magnetic attractor (13) is subjected to a first magnetic force (F1), and the second magnetic attractor (14) is subjected to a second magnetic force (F2), wherein the first magnetic force (F1) is greater than the second magnetic force (F2).

10. The motor (10) according to claim 8 or 9, characterized in that, The fourth magnetic attractor (16) is the second guide rod (92), which is magnetic.

11. The motor (10) according to any one of claims 7 to 10, characterized in that, The first carrier (2) includes a first connecting arm (21), a second connecting arm (22), a third connecting arm (23) and a connecting plate (24). The first connecting arm (21), the second connecting arm (22) and the third connecting arm (23) are all fixedly connected to the same side of the connecting plate (24) and are arranged at intervals along the second direction. The first carrier (2) is used to install the first optical element (30). The first connecting arm (21), the second connecting arm (22) and the connecting plate (24) enclose the first accommodating space (25). The first optical element (30) is installed in the first accommodating space (25). The first coil (4) is fixedly connected to the third connecting arm (23). A portion of m sets of second magnet units (621) is located between the second connecting arm (22) and the third connecting arm (23). M sets of first magnet units (611) are located on the side of the third connecting arm (23) away from the second connecting arm (22).

12. The motor (10) according to claim 11, characterized in that, The first magnetic suction member (13) is fixedly connected to one end of the second connecting arm (22) away from the connecting plate (24), and the first magnetic suction member (13) is located on the side of the base plate (115) of the first magnet unit (611) away from the base (1); The third magnetic attractor (15) is the first magnet unit (611).

13. The motor (10) according to claim 3, characterized in that, The side plate (117) includes a first support column (111), a second support column (112), a third support column (113), and a fourth support column (114). The first support column (111), the second support column (112), the third support column (113), and the fourth support column (114) are fixedly connected to the same side of the base plate (115). The first support column (111) and the second support column (112) are arranged opposite to each other in the first direction. The third support column (113) and the fourth support column (114) are arranged opposite to each other in the first direction. The first support column (111) and the fourth support column (114) are arranged opposite to each other in the second direction. The second support column (112) and the third support column (113) are arranged opposite to each other in the second direction. The base plate (115), the first support column (111), the second support column (112), the third support column (113) and the fourth support column (114) enclose a motion space (1001), and the first carrier (2), the first coil (4), the first guide (41) and the second guide (42) are all installed in the motion space (1001); The motor (10) further includes a first magnetic sheet (612) and a second magnetic sheet (622). The first magnetic sheet (612) and the second magnetic sheet (622) are both fixedly connected between the first support column (111) and the second support column (112). m sets of the first magnet units (611) are fixedly connected to the first magnetic sheet (612), and m sets of the second magnet units (621) are fixedly connected to the second magnetic sheet (622). In the second direction, the m sets of the first magnet units (611) and the m sets of the first magnet units (611) are located between the first magnetic sheet (612) and the second magnetic sheet (622).

14. The motor (10) according to any one of claims 1 to 13, characterized in that, The length D1 of the first coil (4) in the first direction is greater than 0.5k, where k is the length of the first magnet unit (611) in the first direction; The distance A between the centerlines of two adjacent first coils (4) in the first direction is less than k.

15. The motor (10) according to claim 14, characterized in that, The distance A between the center lines of two adjacent first coils (4) in the first direction satisfies: xnA = jk, where x and j are positive integers.

16. The motor (10) according to claim 15, characterized in that, The first coil (4) moves a displacement k in the first direction, and the change in current of the first coil (4) corresponds to one energizing cycle T.

17. The motor (10) according to claim 16, characterized in that, The current phase difference between two adjacent first coils (4) is 2π(kA) / k.

18. The motor (10) according to any one of claims 14 to 17, characterized in that, n is an integer multiple of 2, n adjacent first coils (4) are supplied with two-phase current, and the distance A = 0.75k between the center lines of two adjacent first coils (4) in the first direction.

19. The motor (10) according to claim 18, characterized in that, The current flowing through the first coil (4) is a sinusoidal current, and the phase difference between the currents flowing through two adjacent first coils (4) is 90°.

20. The motor (10) according to any one of claims 14 to 17, characterized in that, n is an integer multiple of 3, n adjacent first coils (4) are supplied with three-phase current, and the distance between the center lines of two adjacent first coils (4) in the first direction is A = 2k / 3.

21. The motor (10) according to claim 20, characterized in that, The current flowing through the first coil (4) is a sinusoidal current, and the phase difference between the currents flowing through two adjacent first coils (4) is 120°.

22. The motor (10) according to any one of claims 1 to 21, characterized in that, The length of the first magnet unit (611) in the first direction is greater than or equal to 10 mm.

23. The motor (10) according to any one of claims 1 to 22, characterized in that, The motor (10) further includes a first tunneling magnetoresistive sensor (72) and a magnetic grating (71). The first tunneling magnetoresistive sensor (72) is fixed to the first carrier (2) and spaced apart from the first coil (4). The magnetic grating (71) is fixed to the base (1) and spaced apart from the first magnet unit (611) and the second magnet unit (621). The first tunneling magnetoresistive sensor (72) and the magnetic grating (71) are arranged opposite to each other.

24. The motor (10) according to any one of claims 1 to 23, characterized in that, The motor (10) further includes a second carrier (3), a third guide (51) and a fourth guide (52). The second carrier (3) is movably connected to the base (1) and is spaced apart from the first carrier (2) in the first direction. The second carrier (3) is provided with a third slide groove (301) and a fourth slide groove (302). The extension direction of the third slide groove (301) is parallel to the first direction, and the extension direction of the fourth slide groove (302) is parallel to the first direction. The third slide groove (301) and the fourth slide groove (302) are spaced apart along the second direction. The third guide member (51) is disposed in the third slide groove (301), and the fourth guide member (52) is disposed in the fourth slide groove (302); The motor (10) further includes w second coils (5), which are fixedly connected to the side of the second carrier (3). The second coils (5) are located in the magnetic gap (63) and face m sets of the first magnet units (611) and m sets of the second magnet units (621). When the second coils (5) are energized, they are used to drive the second carrier (3) to move relative to the base (1) in the first direction. w is an integer greater than or equal to 1.

25. The motor (10) according to claim 24, characterized in that, The third slide (301) has a plurality of third limiting structures (305), the plurality of third limiting structures (305) are arranged at intervals along the first direction, and the third guide (51) abuts against the third limiting structure (305); In the second direction, the distance between the second coil (5) and the third slide (301) is less than the distance between the second coil (5) and the fourth slide (302).

26. The motor (10) according to claim 24 or 25, characterized in that, The first guide (41) and the third guide (51) are both first guide rods (91).

27. The motor (10) according to any one of claims 24 to 26, characterized in that, The motor (10) further includes a first electrical connector (81), which includes a first end (811), a second end (812), a third end (813), a first connecting segment (814), and a second connecting segment (815). The first connecting segment (814) is fixedly connected between the first end (811) and the second end (812), and the second connecting segment (815) is fixedly connected between the first end (811) and the third end (813). The first end (811) is fixedly connected to the base (1), the second end (812) is fixedly connected to the first carrier (2) and electrically connected to the first coil (4), the third end (813) is fixedly connected to the second carrier (3) and electrically connected to the second coil (5), and the first connecting segment (814) and the second connecting segment (815) are deformable.

28. The motor (10) according to claim 27, characterized in that, The first connecting segment (814) is U-shaped.

29. A camera module (100), characterized in that, It includes a first optical element (30), a photosensitive element (220), and a motor (10) as claimed in any one of claims 1 to 28, wherein the photosensitive element (220) is located on the light-emitting side of the first optical element (30), and the first optical element (30) is mounted on a first carrier (2) of the motor (10).

30. An electronic device (1000), characterized in that, It includes a housing (200) and a camera module (100) as described in claim 29, the camera module (100) being mounted on the housing (200).

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