Driving assembly, anti-shake mechanism and camera module

Abstract

The utility model discloses a driving assembly, an anti-shake mechanism and a camera module, and belongs to the technical field of camera modules. The driving assembly comprises a first magnet array and a second magnet array, the first magnet array comprises a first magnet, a second magnet and a third magnet which are arranged in the first direction, the internal magnetic field directions of the first magnet and the third magnet are opposite, the internal magnetic field direction of the second magnet is arranged in the first direction, and the internal magnetic field direction of the third magnet is arranged in the second direction; a strong magnetic field area is formed on the same side of the first magnet and the third magnet; the first coil array comprises a first coil and a second coil which are arranged in a spaced mode in the first direction, the first coil and the second coil are arranged in the high-intensity magnetic field area, the axial direction of the first coil is arranged in the internal magnetic field direction of the first magnet, and the axial direction of the second coil is arranged in the internal magnetic field direction of the second magnet. And the axial direction of the second coil is arranged along the internal magnetic field direction of the third magnet. According to the driving assembly, the anti-shake mechanism and the camera module provided by the invention, the good anti-shake driving capability and the relatively small overall scale can be considered at the same time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of camera modules, and particularly relates to a driving assembly, an anti-shake mechanism and a camera module. BACKGROUND

[0002] In a camera module, an optical anti-shake structure is usually configured to flexibly adapt to the requirements of various shooting conditions and ensure shooting quality. In the optical anti-shake structure, a driving mechanism is configured to drive a lens or an image sensor to move along the orthogonal direction of the optical axis to compensate for the shaking generated in the shooting process and maintain the stability of the picture.

[0003] In some terminal products, especially some high-end products, the shooting quality of the camera module is required to be high, so that the specification of the image sensor is usually large, and the stroke of the anti-shake movement is also large, which requires greater driving capacity. Correspondingly, the size specification of the driving mechanism becomes larger, the installation space requirement in the camera module is larger, the risk of interference with the surrounding structure is increased, which is not conducive to the stability of the anti-shake function, and to some extent, the overall volume of the camera module is also increased, which is not conducive to the use of the camera module. That is, the anti-shake driving capacity of the camera module and the compatibility of the module size are not ideal. CONTENT OF THE UTILITY MODEL

[0004] The application provides a driving assembly, an anti-shake mechanism and a camera module, which aims to at least solve the technical problem that the anti-shake driving capacity of the camera module and the compatibility of the module size are not ideal. To this end,

[0005] In one aspect of the application, a driving assembly is provided, which comprises:

[0006] A first magnet array comprises a first magnet, a second magnet and a third magnet arranged along a first direction, and the internal magnetic field directions of the first magnet and the third magnet are opposite, and the internal magnetic field direction of the second magnet is arranged along the first direction to form a first strong magnetic field region on the same side of the first magnet and the third magnet.

[0007] A first coil array comprises a first coil and a second coil arranged at intervals along the first direction, and the first coil and the second coil are arranged in the first strong magnetic field region, the axial direction of the first coil is arranged along the internal magnetic field direction of the first magnet, and the axial direction of the second coil is arranged along the internal magnetic field direction of the third magnet.

[0008] In some embodiments, the driving assembly further comprises:

[0009] a second magnet array including a fourth magnet, a fifth magnet and a sixth magnet arranged along a second direction, and the fourth magnet and the sixth magnet have opposite internal magnetic field directions, and the fifth magnet has an internal magnetic field direction arranged along the second direction to form a second strong magnetic field region on the same side of the fourth magnet and the sixth magnet;

[0010] a second coil array including a third coil and a fourth coil arranged along the second direction, the third coil and the fourth coil are arranged in the second strong magnetic field region, an axial direction of the third coil is arranged along the internal magnetic field direction of the fourth magnet, an axial direction of the fourth coil is arranged along the internal magnetic field direction of the sixth magnet, and the second direction intersects the first direction.

[0011] In some embodiments, the internal magnetic field directions of the first magnet and the third magnet are arranged along the second direction, the internal magnetic field directions of the fourth magnet and the sixth magnet are arranged along the first direction, and the first direction and the second direction are orthogonal.

[0012] Another aspect of the embodiments of the present application further provides an anti-shake mechanism, comprising:

[0013] a first carrier;

[0014] a second carrier movably arranged on the first carrier;

[0015] a driving assembly connected to the first carrier and the second carrier to drive the second carrier to move in a set plane relative to the first carrier;

[0016] wherein the first direction and the second direction are in the set plane.

[0017] In some embodiments, the anti-shake mechanism further comprises:

[0018] a rolling support assembly abutting between the first carrier and the second carrier;

[0019] a tensioning assembly connected between the first carrier and the second carrier.

[0020] In some embodiments, the tensioning assembly includes a magnetic attraction element, the magnetic attraction element is arranged on the first carrier, and the magnetic attraction element is arranged within a magnetic field range of the first magnet array on the second carrier.

[0021] Another aspect of the embodiments of the present application further provides a camera module, comprising:

[0022] a base;

[0023] the anti-shake mechanism is movably arranged in the base along a third direction;

[0024] a lens disposed on the second carrier, and an optical axis direction of the lens is disposed along the third direction;

[0025] a focusing assembly connected to the first carrier and the base, to drive the anti-vibration mechanism to move relative to the base along the third direction;

[0026] wherein the third direction is orthogonal to the set plane.

[0027] In some embodiments, the focusing assembly includes a focusing magnet and a focusing coil disposed oppositely, one of which is disposed on the base and the other is disposed on the first carrier.

[0028] In some embodiments, the camera module further includes a flexible circuit board disposed in the base;

[0029] The focusing coil, the first coil array and the second coil array are disposed on the flexible circuit board.

[0030] In some embodiments, the flexible circuit board is vertically disposed in the base along the third direction, and the flexible circuit board is in a U shape as a whole and surrounds the circumferential side of the first carrier.

[0031] The focusing coil, the first coil array and the second coil array are disposed along the circumferential direction of the first carrier.

[0032] The embodiments of the present application have at least the following beneficial effects:

[0033] The driving assembly, the anti-vibration mechanism and the camera module provided by the embodiments of the present application include a first magnet array and a first coil array matched with each other, and the same repulsion and different attraction between the electric magnetic field of the solenoid and the magnetic field of the first magnet array are used to drive the optical anti-vibration mechanism to move horizontally. The first magnet array includes a Halbach magnet array formed by a plurality of adjacent magnets disposed along a first direction, which can form a strong magnetic field region on one side, thereby enhancing the magnetic field force acting on the first coil array after being electrified to a certain extent, so as to obtain greater driving force in the case of a relatively small installation space.

[0034] The first coil array is configured as a plurality of coils spaced along the first direction to adapt to the plurality of magnetic poles of the first magnet array in the first strong magnetic field region; after the plurality of coils are electrified, a bar-shaped magnet with stable polarity is formed, and stable attractive and repulsive forces are formed with the plurality of magnetic poles, thereby ensuring the stability of the driving force.

[0035] It is worth mentioning that the axial direction of the coil can be arranged along the direction of the internal magnetic field of the paired magnet, so that the attractive force and repulsive force between the energized coil and the magnet is along the axial direction of the coil, so that the first magnet array and the first coil array can be arranged along the translation direction of the anti-shake mechanism, so that the first magnet array and the first coil array can be arranged by using the movement space of the anti-shake mechanism, without excessively increasing the overall specification of the camera module. At the same time, the first magnet array and the first coil array are arranged along the translation direction, which can reduce the reserved magnet and coil stacking height space and anti-interference safety gap in the direction orthogonal to the translation direction of the anti-shake mechanism, so that the overall height of the camera module can be reduced to a certain extent, and the larger driving force and smaller overall specification are overall considered, which is helpful to promote the wide application of the camera module. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0037] Figure 1 The structure explosion diagram of the camera module in the embodiment of the present application is shown;

[0038] Figure 2 The packaging state structure schematic diagram of the camera module in Figure 1 is shown;

[0039] Figure 3 The assembly structure schematic diagram of the driving assembly, the focusing assembly and the flexible circuit board in Figure 1 is shown;

[0040] Figure 4 Another angle schematic diagram of the driving assembly in Figure 3 is shown;

[0041] Figure 5 The structure schematic diagram of the driving assembly in Figure 3 is shown;

[0042] Figure 6 The sectional view of the camera module in Figure 2 is shown;

[0043] Figure 7 The internal component assembly state schematic diagram of the camera module in Figure 2 is shown;

[0044] Figure 8 The internal component assembly state schematic diagram of the camera module in Figure 7A schematic diagram of the partial assembly state of the internal components of the camera module in the image;

[0045] Figure 9 It shows Figure 1 A schematic diagram of the lens carrier in the camera module;

[0046] Figure 10 It shows Figure 1 A schematic diagram of the base in the camera module.

[0047] Figure label:

[0048] 1-Base, 11-Rolling gap, 12-Third limiting groove, 13-Box cover, 14-Fixing groove, 15-First clearance window;

[0049] 2-Shake stabilization mechanism, 21-Drive assembly, 211-First magnet array, 211a-First magnet, 211b-Second magnet, 211c-Third magnet, 212-First coil array, 212a-First coil, 212b-Second coil, 213-Second magnet array, 213a-Fourth magnet, 213b-Fifth magnet, 213c-Sixth magnet, 214-Second coil array, 214a-Third coil, 214b-Fourth coil, 215-First strong magnetic field region, 21 6-Second strong magnetic field region, 22-First carrier, 221-Box-shaped frame, 221a-First limiting groove, 222-Locking end cap, 223-Third guide groove, 224-Second clearance window, 23-Second carrier, 231-Lens carrier, 231a-Second guide groove, 232-Second ball bearing, 233-Intermediate support, 233a-First guide groove, 233b-Second limiting groove, 24-Rolling support assembly, 241-First ball bearing, 25-Tightening assembly, 251-First magnetic suction component;

[0050] 3-lens;

[0051] 4-Focusing assembly, 41-Focusing magnet, 42-Focusing coil, 43-Third ball bearing, 44-Second magnetic attractor;

[0052] 5- Flexible circuit board. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0054] Moreover, the application can repeat reference numerals and / or reference letters in different examples for the purpose of simplification and clarity, which in itself does not indicate a relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but a person of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0055] The application will be described below in conjunction with the accompanying drawings and with reference to specific embodiments:

[0056] In some camera modules configured with an optical anti-shake mechanism, the image sensor chip or the lens is driven to move in the plane perpendicular to the optical axis of the lens by the anti-shake mechanism to achieve optical anti-shake. With the increasing demand for shooting quality, especially to meet the shooting needs of some high-end products, the size specifications of the image sensor chip and the lens are relatively large, and the weight is also relatively large; in the existing anti-shake mechanism, the driving capacity of the driving assembly cannot stably meet the anti-shake demand. At the same time, due to the increase in the size specifications of the image sensor and the lens, the available space inside the module is greatly reduced, so that the driving capacity cannot be increased by increasing the size specifications of the driving assembly, and only the overall size of the module can be increased, which limits the application range of the camera module to some extent, and is not conducive to the assembly and application of the camera module; it is also difficult to well compatible with the larger anti-shake driving capacity and the smaller module size specifications.

[0057] Therefore, the embodiments of the application provide a driving assembly, an anti-shake mechanism and a camera module, which aim to solve the technical problem that the compatibility of the anti-shake driving capacity and the size specifications of the camera module is not ideal to some extent, so as to achieve the technical effect of improving the anti-shake driving capacity and taking into account the smaller module size specifications.

[0058] Referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 , in some embodiments, the driving assembly 21 is a power structure configured in the optical anti-shake mechanism 2 of the camera module, and outputs a driving force; generally, the driving assembly 21 can be configured as an electromagnetic principle structure based on a voice coil motor.

[0059] Specifically, the driving assembly 21 can include a first magnet array 211 and a first coil array 212 that cooperate with each other, and the first coil array 212 is arranged within the magnetic field range of the first magnet array 211, so that when the first coil array 212 is energized, an electromagnetic driving force interacting with the first magnet array 211 is generated, so that the external output of the driving force can be realized.

[0060] The first magnet array 211 can adopt a magnet stack array of the Halbach principle to form a first strong magnetic field region 215 on one side of the first magnet array 211, and the first coil array 212 is arranged in the first strong magnetic field region 215, so that greater electromagnetic driving force can be obtained under the condition that the same current is loaded on the first coil array 212. That is, the magnets in the voice coil motor are arranged as the first magnet array 211, which can improve the electromagnetic driving force of the driving assembly 21 under the condition that the arrangement space is relatively large, and meet the driving force requirement of the anti-shake movement of a large-specification, large-weight image sensor or lens.

[0061] The first magnet array 211 includes first magnets 211a, second magnets 211b and third magnets 211c arranged in a first direction X according to the arrangement mode of the Halbach magnet array. It is worth noting that the internal magnetic field of the magnet mentioned in the embodiments of the present application is directed from the S pole to the N pole.

[0062] The internal magnetic field directions of the first magnet 211a and the third magnet 211c are 180 degrees different, that is, the internal magnetic field directions of the first magnet 211a and the third magnet 211c are opposite, that is, in the first direction X, the N pole of the first magnet 211a is spaced apart from the S pole of the third magnet 211c.

[0063] The internal magnetic field direction of the second magnet 211b is arranged along the first direction X, that is, the N pole of the second magnet 211b is adjacent to one of the first magnet 211a and the second magnet 211c, and the S pole of the second magnet 211b is adjacent to the other one of the first magnet 211a or the second magnet 211c.

[0064] It is worth noting that the N pole of the second magnet 211b is adjacent to the N pole of the first magnet 211a, and the S pole of the second magnet 211b is adjacent to the S pole of the third magnet 211c, so as to enhance the one-sided magnetic field intensity on the side where the N pole of the first magnet 211a and the S pole of the third magnet 211c are located to a certain extent, that is, to form the first strong magnetic field region 215.

[0065] The interaction form of the first coil array 212 and the first magnet array 211 is configured according to the force mode of the energized solenoid in the magnetic field. When the first coil array 212 is energized, a magnet-like structure is formed, that is, a magnet-like bar with N and S poles is formed in the axial direction. Therefore, the first coil array 212 and the first magnet array 211 will form an interaction mode based on the principle of same polarity repulsion and different polarity attraction.

[0066] To ensure the stability of the interaction force, the first coil array 212 can include first coils 212a and second coils 212b in the form of solenoids, which are matched with the N pole of the first magnet 211a and the S pole of the third magnet 211c, respectively. Thus, the first coils 212a and the second coils 212b are correspondingly arranged in the first strong magnetic field region 215. Wherein, the length direction of the solenoid is defined as the axial direction of the first coils 212a and the second coils 212b.

[0067] Considering that the first magnet 211a and the third magnet 211c, and the first coils 212a and the second coils 212b all have certain spatial forms, in order to reduce the uneven stress caused by the spatial arrangement posture, the axial direction of the first coils 212a can be arranged along the internal magnetic field direction of the first magnet 211a, and the axial direction of the second coils 212b can be arranged along the internal magnetic field direction of the third magnet 211c; for the sake of convenience, the internal magnetic field direction of the first magnet 211a and the third magnet 211c can be set as the second direction Y. Thus, the force direction between the first coils 212a and the first magnet 211a can be along the second direction Y, and the force direction between the second coils 212b and the third magnet 211c can be along the second direction Y. After the first coils 212a and the second coils 212b are energized, they can stably move along their own axial direction without excessive deviation in other directions, thereby ensuring the stability of the anti-shake driving force.

[0068] It is worth noting that, since the relative movement direction between the first coil array 212 and the first magnet array 211 is the arrangement direction of the two, i.e., the second direction Y, and one of the anti-shake translation directions can be configured as the second direction Y, the first coil array 212 and the first magnet array 211 can be arranged in the anti-shake mechanism along the second direction Y, rather than being arranged in the orthogonal direction of the translation direction, thereby reducing the overall height of the camera module to a certain extent. Overall, the driving force is strengthened by the Halbach magnet array, the stability of the driving force is maintained by the attractive force and repulsive force between the Halbach magnet array and the energized first coil array, the space in the anti-shake translation direction can be fully utilized, the camera module can be installed in the anti-shake mechanism along the anti-shake translation direction, and the module height can be reduced, thereby overall balancing the large anti-shake driving force and the small overall specification, which helps to promote the application range of the camera module.

[0069] In some embodiments, the first magnet 211a, the second magnet 211b and the third magnet 211c in the first magnet array 211 can be arranged in a regular form such as a block or a long strip, so as to maintain the uniformity of the external magnetic field and ensure the uniformity of the electromagnetic force acting on the first coil array 212.

[0070] Generally, the first magnet 211a, the second magnet 211b and the third magnet 211c can be bonded by a cementing material, welded or fixed by other processes.

[0071] In some embodiments, in order to facilitate the accuracy of the driving force, the relative initial position of the first coil array 212 and the first magnet array 211 needs to be strictly controlled, so as to control the size and direction of the current applied to the first coil array 212.

[0072] Considering that the relative moving direction of the first coil 212a and the first magnet 211a is the second direction Y, i.e. in the axial direction of the first coil 212a, in the initial state, the first coil 212a and the first magnet 211a are coaxially arranged, and the second coil 212b and the third magnet 211c are coaxially arranged.

[0073] Alternatively, the N pole of the first magnet 211a and the N pole of the second magnet 211b can be regarded as a whole, and this N pole whole is coaxially arranged with the first coil 212a. The S pole of the third magnet 211c and the S pole of the second magnet 211b can be regarded as a whole, and this S pole whole is coaxially arranged with the second coil 212b.

[0074] In some embodiments, the first coil 212a and the second coil 212b can be arranged in a solenoid shape. A certain gap is maintained between the first coil 212a and the second coil 212b, so as to avoid mutual interference between the two energized coils. Generally, the first coil 212a and the second coil 212b can be located on both sides of the magnetic pole boundary line of the second magnet 211b.

[0075] In some embodiments, in order to adapt to the panning requirement of the anti-shake mechanism, the driving assembly needs to exert driving force in two intersecting directions. The driving assembly 21 can further include a second magnet array 213 and a second coil array 214, and the second coil array 214 is arranged within the magnetic field range of the second magnet array 213, so as to generate an electromagnetic driving force interacting with the second magnet array 213 when the second coil array 214 is energized, thereby realizing the external output of the driving force.

[0076] The second magnet array 213 can adopt a magnet stack array of the Halbach principle to form a second strong magnetic field region 216 on one side of the second magnet array 213, and the second coil array 214 is arranged in the second strong magnetic field region 216, so that greater electromagnetic driving force can be obtained under the condition that the same current is loaded on the second coil array 214. That is, the magnets in the voice coil motor are arranged as the second magnet array 213, which can improve the electromagnetic driving force of the driving assembly 21 under the condition that the arrangement space is relatively large, and meet the driving force requirement of the anti-shake movement of the large-specification, large-weight image sensor or lens.

[0077] The second magnet array 213 includes a fourth magnet 213a, a fifth magnet 213b and a sixth magnet 213c arranged in the second direction Y according to the arrangement mode of the Halbach magnet array.

[0078] The internal magnetic field directions of the fourth magnet 213a and the sixth magnet 213c are 180 degrees different, that is, the internal magnetic field directions of the fourth magnet 213a and the sixth magnet 213c are opposite, that is, in the second direction Y, the N pole of the fourth magnet 213a and the S pole of the sixth magnet 213c are spaced apart.

[0079] The internal magnetic field direction of the fifth magnet 213b is arranged in the second direction Y, that is, the N pole of the fifth magnet 213b is adjacent to one of the fourth magnet 213a and the sixth magnet 213c, and the S pole of the fifth magnet 213b is adjacent to the other one of the fourth magnet 213a or the sixth magnet 213c.

[0080] It is worth noting that the N pole of the fifth magnet 213b is adjacent to the N pole of the fourth magnet 213a, and the S pole of the fifth magnet 213b is adjacent to the S pole of the sixth magnet 213c, so as to enhance the one-sided magnetic field intensity on the side where the N pole of the fourth magnet 213a and the S pole of the sixth magnet 213c are located to a certain extent, that is, to form the second strong magnetic field region 216.

[0081] The interaction form of the second coil array 214 and the second magnet array 213 is configured according to the force mode of the energized solenoid in the magnetic field. When the second coil array 214 is energized, a magnet-like structure is formed, that is, a magnet-like bar with N and S poles is formed in the axial direction. Therefore, the energized second coil array 214 and the second magnet array 213 form an interaction mode based on the principle of same-pole repulsion and opposite-pole attraction.

[0082] To ensure the stability of the interaction force, the second coil array 214 can include a third coil 214a and a fourth coil 214b in the form of a solenoid, which are matched with the N pole of the fourth magnet 213a and the S pole of the sixth magnet 213c, respectively. Therefore, the third coil 214a and the fourth coil 213b are correspondingly arranged in the second strong magnetic field region 216. Wherein, the length direction of the solenoid is defined as the axial direction of the first coil 212a and the second coil 212b.

[0083] Considering that the fourth magnet 213a and the sixth magnet 213c, as well as the third coil 214a and the fourth coil 214b, all have a certain spatial form, in order to reduce the uniformity of the force caused by the spatial arrangement posture, the axial direction of the third coil 214a can be arranged along the internal magnetic field direction of the fourth magnet 213a, and the axial direction of the fourth coil 214b can be arranged along the internal magnetic field direction of the sixth magnet 213c; For the sake of description, the internal magnetic field direction of the fourth magnet 213a and the sixth magnet 213c can be arranged along the first direction X. Therefore, the force direction between the third coil 214a and the fourth magnet 213a can be along the first direction X, and the force direction between the fourth coil 214b and the sixth magnet 213c can be along the first direction X. After the third coil 213a and the fourth coil 213b are energized, they can be stably moved along their own axial direction without excessive deviation in other directions, thereby ensuring the stability of the anti-shake driving force.

[0084] It is worth noting that since the relative movement direction between the second coil array 214 and the second magnet array 213 is the arrangement direction of the two, that is, the first direction X, and one of the anti-shake translation directions can be configured as the first direction X, the second coil array 214 and the second magnet array 213 can be arranged in the anti-shake mechanism along the first direction X, rather than being arranged in the orthogonal direction of the translation direction, thereby reducing the overall height of the camera module to a certain extent. Overall, the driving force is strengthened by the Halbach magnet array, and the stability of the driving force is maintained by the attractive force and repulsive force between the second magnet array 213 and the energized second coil array 214, and the space in the anti-shake translation direction can be fully utilized to install the camera module in the anti-shake mechanism along the anti-shake translation direction, thereby reducing the module height, and overall, the large anti-shake driving force and the small overall specification are taken into account, which helps to promote the application range of the camera module.

[0085] In some embodiments, considering that the anti-shake mechanism is in two orthogonal directions, the direction of electromagnetic driving force between the second magnet array 213 and the second coil array 214 is orthogonal to the direction of electromagnetic driving force between the first magnet array 211 and the first coil array 212.

[0086] To this end, the internal magnetic field direction of the first magnet 211a and the third magnet 211c and the axial direction of the first coil array 212 are arranged along the second direction Y; the internal magnetic field direction of the fourth magnet 213a and the sixth magnet 213c and the axial direction of the second coil array 214 are arranged along the first direction Y; and the second direction Y is orthogonal to the first direction X.

[0087] In some embodiments, the number of magnets in the first magnet array 211 and the second magnet array 213 can also be more, such as five, seven, etc.; and the number of coils arranged in the first coil array 212 and the second coil array 214 is also increased accordingly, such as three, five, etc.

[0088] In some embodiments, the fourth magnet 213a, the fifth magnet 213b and the sixth magnet 213c in the second magnet array 213 can be arranged in a relatively regular form such as a block, a long strip, etc., so as to maintain the uniformity of the external magnetic field and ensure the uniformity of the electromagnetic force with the second coil array 214.

[0089] Generally, the fourth magnet 213a, the fifth magnet 213b and the sixth magnet 213c can be bonded by a cementing material, or can be welded, or fixed by other processes.

[0090] In some embodiments, in order to facilitate the control of the driving force precision, the relative initial position of the second coil array 214 and the second magnet array 213 needs to be strictly controlled, so as to control the size and direction of the current applied to the second coil array 214.

[0091] Considering that the relative moving direction of the third coil 214a and the fourth magnet 213a is the first direction X, that is, in the axial direction of the third coil 214a, the third coil 214a and the fourth magnet 213a are coaxially arranged in the initial state, and the fourth coil 214b and the sixth magnet 213c are coaxially arranged.

[0092] Alternatively, the N-pole of the fourth magnet 213a and the N-pole of the fifth magnet 211b can be integrated as a whole, and this N-pole whole can be arranged coaxially with the first coil 214a. The S-pole of the sixth magnet 213c and the S-pole of the fifth magnet 211b can be integrated as a whole, and this S-pole whole can be arranged coaxially with the fourth coil 214b.

[0093] In some embodiments, the third coil 214a and the fourth coil 214b can be arranged as solenoids. A gap is maintained between the third coil 214a and the fourth coil 214b, and the third coil 214a and the fourth coil 214b can be located on both sides of the pole boundary of the fifth magnet 213b.

[0094] Referring to Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9 In some embodiments, a dolly mechanism 2 based on the above-mentioned driving assembly 21 is also provided, which comprises the above-mentioned driving assembly 21, a first carrier 22, and a second carrier 23.

[0095] The second carrier 23 is movably arranged on the first carrier 22, and the driving assembly 21 is connected with the first carrier 22 and the second carrier 23 respectively to drive the second carrier 23 to move relative to the first carrier 22 in a set plane.

[0096] The second carrier 23 can serve as a carrier of a lens or an image sensing chip to realize the horizontal motion dolly of the lens or the image sensing chip.

[0097] Generally, the set plane can be a plane in which the first direction X and the second direction Y are located, and the second carrier 23 can move relative to the first carrier 22 in the first direction X and the second direction Y.

[0098] In some embodiments, in order to improve the smoothness of movement and the stability of movement posture of the second carrier 23 on the first carrier 22, the dolly mechanism 2 can further comprise a rolling support assembly 24 and a tensioning assembly 25; the rolling support assembly 24 is rolling clamped between the second carrier 23 and the first carrier 22, and the tensioning assembly 25 is connected to the second carrier 23 on the first carrier 22.

[0099] The rolling support assembly 24 can stably maintain the interval of the second carrier 23 on the first carrier 22, thereby ensuring the smoothness of relative movement and the stability of movement posture of the second carrier 23 on the first carrier 22.

[0100] The tensioning assembly 25 can maintain the tensioning force of the second carrier 23 between the first carriers 22, thereby stably clamping the rolling support assembly 24, and ensuring the stability and reliability of the relative movement of the first carrier 22 and the second carrier 23.

[0101] In some embodiments, in order to reduce the risk of interference of the tensioning assembly 25 to the relative movement of the first carrier 22 and the second carrier 23, the tensioning assembly 25 can adopt a structure based on magnetic attraction principle, avoiding the interference problem caused by direct physical contact.

[0102] Specifically, the tensioning assembly 25 can include a first magnetic attraction member 251 arranged on the first carrier 22, and the first magnet array 211 can be arranged on the second carrier 23 and can be arranged within the magnetic field range of the first magnet array 211, maintaining a stable magnetic attraction force to tension the second carrier 23 on the first carrier 22.

[0103] Generally, the number of the first magnetic attraction member 251 can be two, cooperating with the first magnet array 211 and the second magnet array 213, thereby being able to disperse the tensioning force to a certain extent, and reducing the unilateral warping of the second carrier 23 caused by uneven distribution of tensioning force.

[0104] In some embodiments, the first magnetic attraction member 251 can be arranged as a magnetic steel sheet or other magnetic metal material member.

[0105] In some embodiments, the rolling support assembly 24 can include a first rolling ball 241 rolling against between the first carrier 22 and the first carrier 23.

[0106] Generally, the stacking direction of the first carrier 22 and the second carrier 23 is arranged as a third direction Z, and the first rolling ball 241 is arranged in the gap of the first carrier 22 and the second carrier 23 in the third direction Z. Wherein, the third direction Z is orthogonal to the first direction X and the second direction Y.

[0107] In some embodiments, a guide groove or a limiting groove is arranged on the first carrier 22 and / or the second carrier 23 to accommodate the first rolling ball 241, thereby avoiding the support balance deterioration caused by excessive displacement of the first rolling ball 241 during rolling.

[0108] In some embodiments, a first limiting groove 221a can be formed on the first carrier 22, and a first guiding groove 233a can be formed on the second carrier 23. The first limiting groove 221a is arranged opposite to the first guiding groove 233a, and the guiding direction of the first guiding groove 233a is arranged along the first direction X or the second direction Y. The first rolling ball 241 is arranged to roll in the first limiting groove 221a and the first guiding groove 233a.

[0109] When the second carrier 23 is driven by the driving assembly 21, the first rolling ball 241 can be kept in the area of the first limiting groove 221a of the first carrier 22 to stably support the second carrier 23. The first rolling ball 241 can roll along the first guiding groove 233a to reduce the resistance of the movement of the second carrier 23 to a certain extent.

[0110] Of course, the positions of the first limiting groove 221a and the first guiding groove 233a can be interchanged, that is, the first limiting groove 221a can be arranged on the second carrier 23, and the first guiding groove 233a can be arranged on the first carrier 22. The positions of the first limiting groove 221a and the first guiding groove 233a can be flexibly arranged according to actual needs.

[0111] In some embodiments, in order to improve the smoothness of the movement of the second carrier 23 in the first direction X and the second direction Y and the stability of the movement direction, the second carrier 23 can be arranged in a multi-layer sliding structure to adapt to the movement in the first direction X and the second direction Y, respectively.

[0112] Specifically, the second carrier 23 includes a lens carrier 231, a second rolling ball 232, and an intermediate support 233. The lens carrier 231, the intermediate support 233, and the first carrier 22 are arranged along the third direction Z. The second rolling ball 232 is arranged to roll between the lens carrier 231 and the intermediate support 233, and the first rolling ball 241 is arranged to roll between the intermediate support 233 and the first carrier 22.

[0113] The first guide slot 233a is arranged on the middle support 233 and located on a side surface of the middle support 233 close to the first limiting slot 221a. The middle support 233 is provided with a second limiting slot 233b on a side surface close to the lens carrier 231, and the lens carrier 231 is provided with a second guide slot 231a. The second limiting slot 233b is arranged opposite to the second guide slot 231a, and the second rolling ball 232 is arranged in the second limiting slot 233b and the second guide slot 231a. The guide directions of the first guide slot 233a and the second guide slot 231a are perpendicular to each other.

[0114] Generally, the guide direction of the first guide slot 233a can be one of the first direction X and the second direction Y, and the guide direction of the second guide slot 231a is the other one of the first direction X and the second direction Y.

[0115] On the other hand, the first magnet array 211 and the second magnet array 213 can be arranged on the lens support 231. Under the action of the driving assembly 21, the lens carrier 231 can move along the first direction X or the second direction Y to achieve anti-shake.

[0116] In some embodiments, in order to avoid the second carrier 23 from being separated from the first carrier 22, the first carrier 22 can be arranged as a box-shaped frame 221, and the second carrier 23 can be arranged in the inner space of the box-shaped frame 221. The two side surfaces of the box-shaped frame 221 are through, which facilitates the installation of the second carrier 23 and can leave a light path for the lens on the second carrier 23.

[0117] In order to avoid the second carrier 23 from being separated from the first carrier 22 along the third direction Z, the box-shaped frame 221 is provided with a locking end cover 222.

[0118] The locking end cover 222 can be hooked on the box-shaped frame 221.

[0119] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10In some embodiments, a camera module is also provided, which is configured with a translation lens anti-shake function mechanism and a focusing function mechanism. Specifically, the camera module includes a base 1, the above-mentioned anti-shake mechanism 2, a lens 3, and a focusing assembly 4; the anti-shake mechanism 2 is movably arranged in the base 1 as a whole, and the moving direction of the anti-shake mechanism 2 is arranged along the third direction Z; the lens 2 is arranged on the second carrier 23 of the anti-shake mechanism 2; the focusing assembly is connected between the base 1 and the first carrier 22 of the anti-shake mechanism 2 to drive the anti-shake mechanism 2 to move as a whole along the third direction Z, and the optical axis of the lens 3 is arranged along the third direction Z.

[0120] In some embodiments, the focusing assembly 4 can adopt a functional mechanism based on the principle of a voice coil motor; the focusing assembly 4 can include a focusing magnet 41 and a focusing coil 42, one of which is arranged on the base 1 and the other is arranged on the first carrier 22, and the focusing coil 42 is arranged in the magnetic field of the focusing magnet 41; after the focusing coil 42 is energized, the magnetic field force between the focusing coil 42 and the focusing magnet 41 can interact, prompting the energized coil 42 to move relative to the focusing magnet 41, thereby prompting the first carrier 22 to move relative to the base 1 along the third direction Z, achieving focusing operation.

[0121] In some embodiments, the driving magnet 41 can also adopt a Halbach magnet array, which can increase the focusing driving force to some extent.

[0122] In some embodiments, in order to improve the smoothness of the movement of the first carrier 22 relative to the base 1 along the third direction Z, the focusing assembly 4 further includes a third ball 43; in the orthogonal direction of the third direction Z, the base 1 and the first carrier 22 have a rolling gap 11 between them, the third ball 43 is arranged in the rolling gap 11; and the third ball 43 rolls against the first carrier 22 and the base 1, thereby being able to limit the distance between the first carrier 22 and the base 1 in the orthogonal direction of the third direction Z during the movement of the first carrier 22 along the third direction Z, ensuring the stability of the moving posture, thereby ensuring the focusing quality.

[0123] In order to stably hold the third ball 43, a third limiting groove 12 can be provided on the base 1, a third guide groove 223 is opened on the first carrier 22, the third limiting groove 12 and the third guide groove 223 are arranged opposite to each other, and the third ball is rollingly arranged in the third limiting groove 12 and the third guide groove 223 to limit the moving direction of the third ball 43.

[0124] The third guide groove 223 can be set along the third direction Z.

[0125] In some embodiments, in order to maintain the clamping stability of the third ball 43, the focusing assembly 4 further includes a second magnetic suction member 44, which can be disposed opposite to the focusing magnet 41 to pull the first carrier 22 toward the base 1 and clamp the third ball 43.

[0126] Generally, the second magnetic component 44 can be configured as a magnetic metal material component such as a magnetic steel sheet.

[0127] In some embodiments, the base 1 may also adopt a box-shaped frame structure, with the first carrier 22 disposed inside the base 1. A box cover 13 may also be configured to cover the base 1 and protect the focusing mechanism 4, the image stabilization mechanism 2, and the lens 3.

[0128] In some embodiments, in order to simplify the assembly operation of the internal components of the camera module, the focusing coil 42, the first coil array 212 and the second coil array 214 can be integrated on a single circuit board, thereby enabling the placement and installation of the three coils in a single assembly operation.

[0129] In some embodiments, in order to accommodate the installation operations of the drive assembly 21 and the focusing assembly 4, the focusing coil 42, the first coil array 212 and the second coil array 214 are disposed on a flexible circuit board 5, which can adapt to installation operations in different positions and complex working conditions through the deformation of the flexible circuit board 5.

[0130] In some embodiments, the flexible circuit board 5 can be placed upright along the third direction Z in the gap between the first carrier 22 and the base 1, thereby making full use of the height space in the base 1, reducing the occupation of the width space, and reducing the risk of interference with the surrounding structure.

[0131] In some embodiments, the first carrier 22 may be configured as a square-shaped component, and the first magnet array 211, the second magnet array 213, and the driving magnet 41 are spaced apart on the circumferential side of the first carrier 22; the flexible circuit board 5 may be arranged around the circumferential side of the first carrier 22 to form a U-shaped component, and the first coil array 212, the second coil array 214, and the focusing coil 42 are spaced apart on the flexible circuit board 5 and are opposite to the first magnet array 211, the second magnet array 213, and the driving magnet 41.

[0132] Generally, the flexible circuit board 5 can be bent into three consecutive circuit boards, on which the first coil array 212, the second coil array 214 and the focusing coil 42 are respectively mounted.

[0133] In some embodiments, a fixing groove 14 may be formed on the outer side wall of the base 1, and the shape of the fixing groove 14 is adapted to the shape of the flexible circuit board 5; during assembly, the board body of the flexible circuit board 5 may be embedded in the fixing groove 14 as a whole.

[0134] Considering that the flexible circuit board 5 surrounds the first carrier 22, the range of the fixing groove 14 can also extend to the three sides of the base 1. Correspondingly, a first clearance window 15 can be opened on the three sides of the base 1, corresponding to the positions of the first coil array 212, the second coil array 214, and the driving coil 42. The first coil array 212, the second coil array 214, and the driving coil 42 can be correspondingly embedded in the first clearance window 15, thereby reducing the overall width of the camera module to a certain extent.

[0135] Similarly, a second clearance window 224 can also be provided on the side wall of the first carrier 22, and the second clearance window 224 is arranged opposite to the first clearance window 224, so that there is a gap between the first coil array 212 and the first magnet array 211, a gap between the second coil array 214 and the second magnet array 213, and a gap between the driving magnet 41 and the driving coil 42, so as to limit the interference of the frame structure on the driving component 21 and the focusing component 4.

[0136] The embodiments of this application have at least the following beneficial effects:

[0137] The driving component, image stabilization mechanism, and camera module provided in this application include a cooperating first magnet array and a first coil array. The optical image stabilization mechanism is driven to translate by the repulsive force between like poles and the attractive force between unlike poles of the electromagnetic field of the energized solenoid and the magnetic field of the first magnet array. The first magnet array comprises a Heilbeck magnet array formed by multiple adjacent magnets arranged along a first direction, which can create a strong magnetic field region on one side, thereby enhancing the magnetic field force experienced by the first coil array after energization, thus achieving greater driving force within a limited installation space.

[0138] The first coil array is configured as multiple coils spaced apart along the first direction to adapt to the multiple magnetic poles of the first magnet array in the first strong magnetic field region; after the multiple coils are energized, they form a bar-like magnet with stable polarity, which forms a stable attractive and repulsive force with the multiple magnetic poles to ensure the stability of the driving force.

[0139] It is worth noting that the coil's axis can be aligned with the direction of the internal magnetic field of the paired magnet, so that the attractive and repulsive forces between the energized coil and the magnet are along the coil's axis. This allows the first magnet array and the first coil array to be positioned along the translational direction of the image stabilization mechanism, thus utilizing the movement space of the image stabilization mechanism to accommodate the first magnet array and the first coil array without excessively increasing the overall size of the camera module. Furthermore, arranging the first magnet array and the first coil array at intervals along the translational direction reduces the reserved height space and anti-interference safety gap for the magnets and coils in the orthogonal direction of the image stabilization mechanism's translational direction. This reduces the overall height of the camera module to some extent, achieving a balance between greater driving force and smaller overall size, which helps promote the widespread application of camera modules.

[0140] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0141] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not 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 this application.

[0142] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0143] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0144] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0145] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0146] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0147] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A drive assembly, characterized by The drive assembly comprises: a first magnet array comprising a first magnet, a second magnet and a third magnet arranged along a first direction, and the internal magnetic field directions of the first magnet and the third magnet are opposite, and the internal magnetic field direction of the second magnet is arranged along the first direction to form a first strong magnetic field region on the same side of the first magnet and the third magnet; a first coil array comprising a first coil and a second coil arranged along the first direction at intervals, and the first coil and the second coil are arranged in the first strong magnetic field region, and the axial direction of the first coil is arranged along the internal magnetic field direction of the first magnet, and the axial direction of the second coil is arranged along the internal magnetic field direction of the third magnet.

2. The drive assembly of claim 1, wherein, The drive assembly further comprises: a second magnet array comprising a fourth magnet, a fifth magnet and a sixth magnet arranged along a second direction, and the internal magnetic field directions of the fourth magnet and the sixth magnet are opposite, and the internal magnetic field direction of the fifth magnet is arranged along the second direction to form a second strong magnetic field region on the same side of the fourth magnet and the sixth magnet; a second coil array comprising a third coil and a fourth coil arranged along the second direction at intervals, and the third coil and the fourth coil are arranged in the second strong magnetic field region, and the axial direction of the third coil is arranged along the internal magnetic field direction of the fourth magnet, and the axial direction of the fourth coil is arranged along the internal magnetic field direction of the sixth magnet, and the second direction intersects the first direction.

3. The drive assembly of claim 2, wherein, The internal magnetic field directions of the first magnet and the third magnet are arranged along the second direction, the internal magnetic field directions of the fourth magnet and the sixth magnet are arranged along the first direction, and the first direction and the second direction are orthogonal.

4. An anti-shake mechanism, characterized in that, The drive assembly comprises: a first carrier; a second carrier movably arranged on the first carrier; The drive assembly according to any one of claims 2 or 3 is connected to the first carrier and the second carrier to drive the second carrier to move relative to the first carrier in a set plane; Wherein, the first direction and the second direction are located in the set plane.

5. The anti-shake mechanism according to claim 4, wherein The anti-shake mechanism further comprises: a rolling support assembly abutting between the first carrier and the second carrier; a tensioning assembly connected between the first carrier and the second carrier.

6. The anti-shake mechanism according to claim 5, wherein The tensioning assembly comprises a magnetic attraction element arranged on the first carrier, and the magnetic attraction element is arranged within the magnetic field range of the first magnet array on the second carrier.

7. An image capture module, comprising: The drive assembly comprises: a base; The anti-shake mechanism according to any one of claims 4 to 6 is movably arranged in the base along a third direction; a lens arranged on the second carrier, and the optical axis direction of the lens is arranged along the third direction; a focusing assembly connected to the first carrier and the base to drive the anti-shake mechanism to move relative to the base along the third direction; Wherein, the third direction is orthogonal to the set plane.

8. The camera module of claim 7, wherein the lens is disposed on the substrate. The focusing assembly comprises a focusing magnet and a focusing coil arranged oppositely, one of which is arranged on the base and the other is arranged on the first carrier.

9. The camera module of claim 8, wherein, The camera module further comprises a flexible circuit board arranged in the base; The focusing coil, the first coil array, and the second coil array are disposed on the flexible circuit board.

10. The camera module of claim 9, wherein, The flexible circuit board is vertically arranged in the third direction in the base, and the flexible circuit board is in a U shape and surrounds a circumferential side of the first carrier. The focusing coil, the first coil array, and the second coil array are arranged in a circumferential direction of the first carrier.

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