Driving assembly, anti-shake mechanism and camera module

Abstract

The invention 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 present application belongs to the technical field of camera modules, and in particular, relates to a driving component, an anti-shake mechanism and a camera module. Background Art

[0002] The camera module is usually equipped with an optical image stabilization structure to flexibly adapt to the needs of various shooting conditions and ensure the shooting quality. The optical image stabilization structure is equipped with a driving mechanism to drive the lens or image sensor to move along the orthogonal direction of the optical axis to compensate for the jitter generated during the shooting process and maintain the stability of the picture.

[0003] In some terminal products, especially some high-end products, the shooting quality requirements of the camera module are relatively high, which makes the specifications of the image sensor usually larger and the anti-shake movement range also larger, which requires greater driving capability; accordingly, the size specifications of the driving mechanism will also become larger, the installation space requirement inside the camera module will increase, and the risk of interference with surrounding structures will also increase, which is not conducive to the stability of the anti-shake function; to a certain extent, it will also increase the overall volume of the camera module, which is not conducive to installation and use; in other words, the anti-shake driving capability of the camera module is not ideally compatible with the module scale. Summary of the invention

[0004] The present application provides a driving component, an anti-shake mechanism and a camera module, which are intended to at least to some extent solve the technical problem of the unsatisfactory compatibility between the anti-shake driving capability of the camera module and the module scale.

[0005] In one aspect of an embodiment of the present application, a driving component is provided, comprising:

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

[0007] The first coil array includes a first coil and a second coil arranged at intervals along the first direction, the first coil and the second coil are arranged in the first strong magnetic field area, 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 drive assembly further comprises:

[0009] A second magnet array, comprising a fourth magnet, a fifth magnet and a sixth magnet arranged along a second direction, wherein the internal magnetic fields of the fourth magnet and the sixth magnet are in opposite directions, and the internal magnetic field of the fifth magnet is arranged along the second direction, so as to form a second strong magnetic field region on the same side of the fourth magnet and the sixth magnet;

[0010] The second coil array includes a third coil and a fourth coil arranged at intervals along the second direction, the third coil and the fourth coil are arranged in the second strong magnetic field region, the axial direction of the third coil is arranged along the internal magnetic field direction of the fourth magnet, the axial direction of the fourth coil is arranged along the internal magnetic field direction of the sixth magnet, and the second direction intersects with 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] In another aspect of the embodiment of the present application, an anti-shake mechanism is further provided, including:

[0013] First carrier;

[0014] a second carrier, movably disposed on the first carrier;

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

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

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

[0018] A rolling support assembly rollingly abuts between the first carrier and the second carrier;

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

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

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

[0022] Base;

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

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

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

[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 that are arranged opposite to each other, one of which is arranged on the base, and the other is arranged 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 arranged on the flexible circuit board.

[0030] In some embodiments, the flexible circuit board is vertically arranged in the base along the third direction, and the flexible circuit board is overall U-shaped and arranged around the circumferential side of the first carrier;

[0031] The focusing coil, the first coil array, and the second coil array are arranged at intervals along the circumference of the first carrier.

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

[0033] The drive assembly, anti-shake mechanism and camera module provided by the embodiment of the present application include a first magnet array and a first coil array that cooperate with each other, and utilize the force of like-pole repulsion and opposite-pole attraction between the electromagnetism of the energized solenoid and the magnetic field of the first magnet array to drive the optical anti-shake mechanism to move in translation. The first magnet array includes a Halbach magnet array formed by a plurality of adjacent magnets arranged along a first direction, which can form a strong magnetic field area on one side thereof, thereby enhancing the magnetic field force on the first coil array after being energized to a certain extent, thereby obtaining a greater driving force when the installation space is equivalent.

[0034] The first coil array is configured as a plurality of coils spaced apart along a first direction to adapt to the plurality of magnetic poles of the first magnet array within the first strong magnetic field region; after the plurality of coils are energized, a bar-shaped magnet with stable polarity is formed, which forms stable attraction and repulsion with the plurality of magnetic poles, thereby ensuring the stability of the driving force.

[0035] It is worth noting that the axial direction of the coil can be set along the direction of the internal magnetic field of the paired magnet, so that the attraction and repulsion between the energized coil and the magnet are along the axial direction of the coil, so that the first magnet array and the first coil array can be set along the translational direction of the anti-shake mechanism, so that the first magnet array and the first coil array can be placed in the moving space of the anti-shake mechanism without excessively increasing the overall specifications of the camera module. At the same time, arranging the first magnet array and the first coil array at intervals along the translational direction can reduce the reserved stacking height space and anti-interference safety gap of the magnets and coils in the orthogonal direction of the translational direction of the anti-shake mechanism, thereby reducing the overall height of the camera module to a certain extent, and taking into account both a larger driving force and a smaller overall specification, which helps to promote the wide application of camera modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 An exploded view of the structure of the camera module in the embodiment of the present application is shown;

[0038] Figure 2 Shows Figure 1 A schematic diagram of the packaging state structure of the camera module;

[0039] Figure 3 Shows Figure 1 Schematic diagram of the assembly structure of the driving component, the focusing component and the flexible circuit board;

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

[0041] Figure 5 Shows Figure 3 A schematic diagram of the structure of the drive component in FIG.

[0042] Figure 6 Shows Figure 2 A cross-sectional view of the camera module in FIG.

[0043] Figure 7 Shows Figure 2 Schematic diagram of the assembly status of the internal components of the camera module;

[0044] Figure 8 Shows Figure 7A schematic diagram of the partial assembly state of the internal components of the camera module;

[0045] Fig. 9 Shows Figure 1 A schematic diagram of the structure of a lens carrier in a camera module;

[0046] Fig.10 Shows Figure 1 Schematic diagram of the structure of the base in the camera module.

[0047] Reference numerals:

[0048] 1-base, 11-rolling gap, 12-third limiting groove, 13-box cover, 14-fixing groove, 15-first avoidance window;

[0049] 2-anti-shake mechanism, 21-driving 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 frame, 221a-first limiting groove, 222-locking end cover, 223-third guide groove, 224-second avoidance window, 23-second carrier, 231-lens carrier, 231a-second guide groove, 232-second ball, 233-intermediate bracket, 233a-first guide groove, 233b-second limiting groove, 24-rolling support assembly, 241-first ball, 25-tensioning assembly, 251-first magnetic attraction member;

[0050] 3- Lens;

[0051] 4-focusing assembly, 41-focusing magnet, 42-focusing coil, 43-third ball, 44-second magnetic attraction member;

[0052] 5-Flexible circuit board. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0054] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0055] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0056] In some camera modules equipped with an optical image stabilization mechanism, the image sensor chip or lens is driven by the image stabilization mechanism to move in a plane orthogonal to the lens optical axis to achieve optical image stabilization. With the increasing requirements for shooting quality, especially in order to meet the shooting needs of some high-end products, the size and specifications of the image sensor chip and the lens are larger, and the weight is correspondingly larger; in the existing image stabilization mechanism, the driving capacity of the driving component cannot stably meet the image stabilization requirements. At the same time, due to the increase in the size 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 of the driving component, and the overall volume of the module can only be increased. This limits the scope of application of the camera module to a certain extent, which is not conducive to the assembly and application of the camera module; it is also impossible to have good compatibility between the larger image stabilization driving capacity and the smaller module volume.

[0057] To this end, the embodiments of the present application provide a driving component, an anti-shake mechanism and a camera module, which aim to solve the technical problem of the unsatisfactory compatibility between the anti-shake driving capability and the volume specifications of the camera module to a certain extent, so as to achieve the technical effect of improving the anti-shake driving capability and taking into account smaller module size specifications.

[0058] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 In some embodiments, the driving component 21 is a power structure configured in the optical image stabilization mechanism 2 of the camera module, which outputs a driving force; generally speaking, the driving component 21 can be configured as an electromagnetic principle structure based on a voice coil motor.

[0059] Specifically, the driving component 21 may 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, it will generate an electromagnetic driving force that interacts with the first magnet array 211, thereby realizing the external output of the driving force.

[0060] The first magnet array 211 may adopt a magnet stacking array based on the Halbach principle, so as 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 as to obtain a greater electromagnetic driving force when the same current is loaded on the first coil array 212. In other words, by setting the magnets in the voice coil motor as the first magnet array 211, the electromagnetic driving force of the driving component 21 can be improved under the condition of a comparable arrangement space, so as to meet the driving force requirements of the anti-shake movement of a large-sized and heavy image sensor or lens.

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

[0062] The internal magnetic field directions of the first magnet 211a and the third magnet 211c differ by 180 degrees, 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 and the S pole of the third magnet 211c are spaced opposite to each other.

[0063] The internal magnetic field direction of the second magnet 211b is set 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 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, thereby enhancing the unilateral magnetic field strength 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, forming the first strong magnetic field region 215.

[0065] The interaction form between 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 will be formed, that is, a bar-like magnet with an N pole and an S pole will be formed along the axial direction. Therefore, the energized first coil array 212 and the first magnet array 211 will form an interaction mode based on the principle that like poles repel and opposite poles attract.

[0066] In order to ensure the stability of the interaction force, the first coil array 212 may include a first coil 212a and a second coil 212b in the form of a solenoid, 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 coil 212a and the second coil 212b are correspondingly arranged in the first strong magnetic field region 215. The length direction of the solenoid is defined as the axial direction of the first coil 212a and the second coil 212b.

[0067] Considering that the first magnet 211a and the third magnet 211c, as well as the first coil 212a and the second coil 212b, all have certain spatial forms, in order to reduce the uneven force caused by the spatial arrangement posture, the axial direction of the first coil 212a can be set along the internal magnetic field direction of the first magnet 211a, and the axial direction of the second coil 212b can be set along the internal magnetic field direction of the third magnet 211c; for the convenience of explanation, the internal magnetic field directions of the first magnet 211a and the third magnet 211c can be set to the second direction Y. Therefore, the direction of the force between the first coil 212a and the first magnet 211a can be along the second direction Y, and the direction of the force between the second coil 212b and the third magnet 211c can be along the second direction Y. After the first coil 212a and the second coil 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, that is, the second direction Y, and one direction in the anti-shake translation direction 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, so that the overall height of the camera module can be reduced to a certain extent. On the whole, the Halbach magnet array is used to strengthen the driving force, and the attraction and repulsion between the Halbach magnet array and the energized first coil array are used to maintain the stability of the driving force, and the space in the anti-shake translation direction can be fully utilized, and it can be installed in the anti-shake mechanism along the anti-shake translation direction, and the module height can be reduced, so as to take into account both the large anti-shake driving force and the small overall specifications, 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 set to relatively regular forms such as blocks, long strips, etc., so as to maintain the uniformity of the external magnetic field and ensure the uniformity of the electromagnetic force with the first coil array 212.

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

[0071] In some embodiments, in order to control 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 magnitude and direction of the current applied to the first coil array 212 .

[0072] Considering that the relative movement direction of the first coil 212a and the first magnet 211a is the second direction Y, that is, 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 taken as a whole, and the N pole can be 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 taken as a whole, and the S pole can be coaxially arranged with the second coil 212b.

[0074] In some embodiments, the first coil 212a and the second coil 212b may be provided with solenoid-shaped parts. A certain gap is maintained between the first coil 212a and the second coil 212b to avoid mutual interference between the two energized coils. Generally speaking, the first coil 212a and the second coil 212b may be located on both sides of the magnetic pole dividing line of the second magnet 211b.

[0075] In some embodiments, in order to adapt to the translational requirements of the anti-shake mechanism, the driving component needs to apply a driving force in two intersecting directions. The driving component 21 may also 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 that when the second coil array 214 is energized, it will generate an electromagnetic driving force that interacts with the second magnet array 213, thereby realizing the external output of the driving force.

[0076] The second magnet array 213 may adopt a magnet stacking array of the Halbach principle, so as 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 as to obtain a greater electromagnetic driving force when the same current is loaded on the second coil array 214. In other words, by setting the magnets in the voice coil motor as the second magnet array 213, the electromagnetic driving force of the driving component 21 can be improved under the condition of a comparable arrangement space, so as to meet the driving force requirements of the anti-shake movement of a large-sized and heavy image sensor or lens.

[0077] The second magnet array 213 includes a fourth magnet 213a, a fifth magnet 213b and a sixth magnet 213c which can be arranged along the second direction Y according to the arrangement pattern of the Halbach magnet array.

[0078] The directions of the internal magnetic fields of the fourth magnet 213a and the sixth magnet 213c differ by 180 degrees, that is, the directions of the internal magnetic fields 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 opposite to each other.

[0079] The internal magnetic field direction of the fifth magnet 213b is set along 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 fifth magnet 213c, and the S pole of the fifth magnet 213b is adjacent to the other 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, thereby enhancing the unilateral magnetic field strength 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, forming the second strong magnetic field region 216.

[0081] The interaction form between 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 will be formed, that is, a bar-like magnet with an N pole and an S pole will be formed along the axial direction. Therefore, the energized second coil array 214 and the second magnet array 213 will form an interaction mode based on the principle that like poles repel each other and opposite poles attract each other.

[0082] In order to ensure the stability of the interaction force, the second coil array 214 may 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. Thus, the third coil 214a and the fourth coil 213b are correspondingly arranged in the second strong magnetic field region 216. 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 certain spatial forms, in order to reduce the force uniformity caused by the spatial arrangement posture, the axial direction of the third coil 214a can be set along the internal magnetic field direction of the fourth magnet 213a, and the axial direction of the fourth coil 214b can be set along the internal magnetic field direction of the sixth magnet 213c; for the convenience of explanation, the internal magnetic field directions of the fourth magnet 213a and the sixth magnet 213c can be set along the first direction X. Therefore, the force direction of the third coil 214a and the fourth magnet 213a can be along the first direction X, and the force direction of 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 stably move 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 direction in the anti-shake translation direction 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, so that the overall height of the camera module can be reduced to a certain extent. Overall, the Halbach magnet array is used to strengthen the driving force, and the attraction and repulsion between the second magnet array 213 and the energized second coil array 214 are used to maintain the stability of the driving force, and the space in the anti-shake translation direction can be fully utilized, and it can be installed in the anti-shake mechanism along the anti-shake translation direction, and the module height can be reduced, so as to take into account both the large anti-shake driving force and the small overall specifications, which helps to promote the application range of the camera module.

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

[0086] To this end, the internal magnetic field directions 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 directions 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 stacked in the first magnet array 211 and the second magnet array 213 may be more, such as five, seven, etc.; correspondingly, the number of coils spaced apart in the first coil array 212 and the second coil array 214 also increases 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 set to relatively regular forms such as blocks, long strips, 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 speaking, the fourth magnet 213a, the fifth magnet 213b and the sixth magnet 213c can be bonded by adhesive materials, or can be welded, or fixed by other processes.

[0090] In some embodiments, in order to control the accuracy of the driving force, 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 magnitude and direction of the current applied to the second coil array 214 .

[0091] Considering that the relative movement 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, in the initial state, the third coil 214a and the fourth magnet 213a are coaxially arranged, 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 taken as a whole, and the N pole as a whole can be coaxially arranged with the first coil 214a. The S pole of the sixth magnet 213c and the S pole of the fifth magnet 211b can be taken as a whole, and the S pole as a whole can be coaxially arranged with the fourth coil 214b.

[0093] In some embodiments, the third coil 214a and the fourth coil 214b may be provided as solenoid-shaped parts. A certain gap is maintained between the third coil 214a and the fourth coil 214b, and the third coil 214a and the fourth coil 214b may be located on both sides of the magnetic pole dividing line of the fifth magnet 213b.

[0094] See also Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 In some embodiments, an anti-shake mechanism 2 based on the above-mentioned driving component 21 is also provided. The anti-shake mechanism 2 includes the above-mentioned driving component 21, a first carrier 22 and a second carrier 23.

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

[0096] The second carrier 23 may be used as a carrier of a lens or an image sensor chip to achieve translational anti-shake of the lens or the image sensor chip.

[0097] Generally speaking, the setting plane may be a plane where the first direction X and the second direction Y are located. And the second carrier 23 may move in the first direction X and the second direction Y relative to the first carrier 22 .

[0098] In some embodiments, in order to improve the movement smoothness and stability of the movement posture of the second carrier 23 on the first carrier 22, the anti-shake mechanism 2 may also include a rolling support assembly 24 and a tensioning assembly 25; the rolling support assembly 24 is rollingly 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 distance between the second carrier 23 and the first carrier 22, thereby ensuring the smoothness of the relative movement between the two and the stability of the moving posture.

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

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

[0102] Specifically, the tensioning component 25 may include a first magnetic member 251, and the first magnetic member 251 is arranged on the first carrier 22. The first magnet array 211 can be arranged on the second carrier 23, and the first magnetic member 251 can be arranged within the magnetic field range of the first magnet array 211 to maintain a stable magnetic attraction to tighten the second carrier 23 on the first carrier 22.

[0103] Generally speaking, the number of the first magnetic attraction members 251 can be two, which cooperate with the first magnet array 211 and the second magnet array 213, so as to disperse the tensioning force to a certain extent and reduce the posture changes such as unilateral tilting of the second carrier 23 caused by uneven distribution of the tensioning force.

[0104] In some embodiments, the first magnetic member 251 can be configured as a magnetic metal material member such as a magnetic steel sheet.

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

[0106] Generally speaking, the stacking direction of the first carrier 22 and the second carrier 23 is set to the third direction Z, and the first rolling ball 241 is set in the gap between the first carrier 22 and the second carrier 23 in the third direction Z. 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 limit groove is provided on the first carrier 22 and / or the second carrier 23 to accommodate the first ball 241 , so as to avoid deterioration of support balance caused by excessive displacement of the first ball 241 during rolling.

[0108] In some embodiments, a first limiting groove 221a may be provided on the first carrier 22, and a first guiding groove 233a may be provided on the second carrier 23, the first limiting groove 221a and the first guiding groove 233a are arranged opposite to each other, and the guiding direction of the first guiding groove 233a is arranged along the first direction X or the second direction Y. The first ball 241 may be rollably provided in the first limiting groove 221a and the first guiding groove 233a.

[0109] When the second carrier 23 is driven by the driving force of the driving assembly 21, the first ball 241 can be kept in the area where the first limiting groove 221a of the first carrier 22 is located, stably supporting the second carrier 23. The first ball 241 can roll along the first guide groove 233a to reduce the resistance 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 are interchangeable, that is, the first limiting groove 221a is set on the second carrier 23, and the first guiding groove 233a is set on the first carrier 22; the positions of the first limiting groove 221a and the first guiding groove 233a can be flexibly set 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 configured as 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 ball 232 and an intermediate bracket 233. The lens carrier 231, the intermediate bracket 233 and the first carrier 22 are arranged at intervals along the third direction Z. The second ball 232 is rollingly supported between the lens carrier 231 and the intermediate bracket 233. The first ball 241 is rollingly supported between the intermediate bracket 233 and the first carrier 22.

[0113] The first guide groove 233a is provided on the intermediate bracket 233, and the first guide groove 233a is located on a side surface of the intermediate bracket 233 close to the first limiting groove 221a. A second limiting groove 233b is provided on a side surface of the intermediate bracket 233 close to the lens carrier 231, and a second guide groove 231a is provided on the lens carrier 231. The second limiting groove 233b is arranged opposite to the second guide groove 231a, and the second ball 232 is rollingly arranged in the second limiting groove 233b and the second guide groove 231a; and the guiding directions of the first guide groove 233a and the second guide groove 231a are orthogonal.

[0114] Generally speaking, the guiding direction of the first guiding groove 233a may be one of the first direction X and the second direction Y, and the guiding direction of the second guiding groove 231a may be the other 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 disposed on the lens support 231 . Under the action of the driving assembly 21 , the lens support 231 can move along the first direction X or the second direction Y to achieve anti-shake.

[0116] In some embodiments, in order to prevent the second carrier 23 from being separated from the first carrier 22, the first carrier 22 may be configured as a box-shaped frame 221, and the second carrier 23 may be disposed in the frame space of the box-shaped frame 221. The two side surfaces of the box-shaped frame 221 in the third direction Z are connected, so as to facilitate the installation of the second carrier 23 and reserve an optical path for the lens on the second carrier 23.

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

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

[0119] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10In some embodiments, a camera module is also provided, which is equipped with a translation lens anti-shake function mechanism and a focusing function mechanism. Specifically, the camera module includes a base 1, the 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 along the third direction Z as a whole, and the optical axis of the lens 3 is arranged along the third direction Z.

[0120] In some embodiments, the focusing component 4 may adopt a functional mechanism based on the principle of a voice coil motor; the focusing component 4 may include a focusing magnet 41 and a focusing coil 42, one of the focusing magnet 41 and the focusing coil 42 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, it can generate an interactive magnetic field force with the focusing magnet 41, causing the energized coil 42 and the focusing magnet 41 to move relative to each other, thereby causing the first carrier 22 to move relative to the base 1 along the third direction Z to achieve a focusing operation.

[0121] In some embodiments, the driving magnet 41 may also be a Halbach magnet array, which can increase the focusing driving force to a certain 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 also includes a third ball 43; in the orthogonal direction of the third direction Z, there is a rolling gap 11 between the base 1 and the first carrier 22, and the third ball 43 is arranged in the rolling gap 11; and the third ball 43 rolls and abuts against the first carrier 22 and the base 1, so that during the movement of the first carrier 22 along the third direction Z, the distance between the first carrier 22 and the base 1 in the orthogonal direction of the third direction Z can be limited, thereby ensuring the stability of the moving posture and thus ensuring the focusing quality.

[0123] In order to stably clamp the third ball 43, a third limiting groove 12 can be set on the base 1, and a third guide groove 223 can be 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 rolled 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 may be disposed 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 also includes a second magnetic component 44, and the fourth magnetic component 44 can be arranged opposite to the focusing magnet 41 to pull the first carrier 22 toward the base 1 and clamp the third ball 43.

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

[0127] In some embodiments, the base 1 may also adopt a box-shaped frame structure, and the first carrier 22 is disposed in the base 1. A box cover 13 may also be configured to cover the base 1 and protect the focusing mechanism 4, the anti-shake 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 circuit board, so that the three coils can be installed in one assembly operation.

[0129] In some embodiments, in order to adapt to the installation operation of the driving component 21 and the focusing component 4, the focusing coil 42, the first coil array 212 and the second coil array 214 are arranged on a flexible circuit board 5, and the flexible circuit board 5 can be deformed to adapt to installation operations in different positions and complex working conditions.

[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, so as to make full use of the height space in the base 1, reduce the width space occupied, and reduce the risk of interference with surrounding structures.

[0131] In some embodiments, the first carrier 22 can be configured as a square-like piece, and the first magnet array 211, the second magnet array 213 and the driving magnet 41 are arranged at intervals on the circumferential side of the first carrier 22; the flexible circuit board 5 can be arranged around the circumferential side of the first carrier 22 to form a U-shaped piece, and the first coil array 212, the second coil array 214 and the focusing coil 42 are arranged at intervals 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 speaking, the flexible circuit board 5 can be bent into three continuous 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 opened on the outer 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 body of the flexible circuit board 5 may be integrally embedded in the fixing groove 14 .

[0134] Considering that the flexible circuit board 5 is arranged around the first carrier 22, the range of the fixing groove 14 can also extend to the three sides of the base 1. Accordingly, first avoidance windows 15 can be respectively 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 drive coil 42, and the first coil array 212, the second coil array 214 and the drive coil 42 can be correspondingly embedded in the first avoidance windows 15, thereby reducing the overall width of the camera module to a certain extent.

[0135] Similarly, a second avoidance window 224 may also be provided on the side wall of the first carrier 22, and the second avoidance window 224 is arranged opposite to the first avoidance window 224, so that a space is left between the first coil array 212 and the first magnet array 211, a space is left between the second coil array 214 and the second magnet array 213, and a space is left 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 the present application have at least the following beneficial effects:

[0137] The drive assembly, anti-shake mechanism and camera module provided by the embodiment of the present application include a first magnet array and a first coil array that cooperate with each other, and utilize the force of like-pole repulsion and opposite-pole attraction between the electromagnetism of the energized solenoid and the magnetic field of the first magnet array to drive the optical anti-shake mechanism to move in translation. The first magnet array includes a Halbach magnet array formed by a plurality of adjacent magnets arranged along a first direction, which can form a strong magnetic field area on one side thereof, thereby enhancing the magnetic field force on the first coil array after being energized to a certain extent, thereby obtaining a greater driving force when the installation space is equivalent.

[0138] The first coil array is configured as a plurality of coils spaced apart along a first direction to adapt to the plurality of magnetic poles of the first magnet array within the first strong magnetic field region; after the plurality of coils are energized, a bar-shaped magnet with stable polarity is formed, which forms stable attraction and repulsion with the plurality of magnetic poles, thereby ensuring the stability of the driving force.

[0139] It is worth noting that the axial direction of the coil can be set along the direction of the internal magnetic field of the paired magnet, so that the attraction and repulsion between the energized coil and the magnet are along the axial direction of the coil, so that the first magnet array and the first coil array can be set along the translational direction of the anti-shake mechanism, so that the first magnet array and the first coil array can be placed in the moving space of the anti-shake mechanism, and the overall specifications of the camera module will not be excessively increased. At the same time, the first magnet array and the first coil array are arranged at intervals along the translational direction, which can reduce the reserved height space and anti-interference safety gap for the magnets and coils in the orthogonal direction of the translational direction of the anti-shake mechanism, thereby reducing the overall height of the camera module to a certain extent, and overall taking into account a larger driving force and a smaller overall specification, which is helpful to promote the wide application of camera modules.

[0140] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0141] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0142] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0143] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0144] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0145] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0146] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

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

Claims

1. A drive assembly, characterized in that: include: A first magnet array comprises a first magnet, a second magnet and a third magnet arranged along a first direction, wherein the internal magnetic fields of the first magnet and the third magnet are in opposite directions, and the internal magnetic field of the second magnet is arranged along the first direction, so as to form a first strong magnetic field region on the same side of the first magnet and the third magnet; The first coil array includes a first coil and a second coil arranged at intervals along the first direction, the first coil and the second coil are arranged in the first strong magnetic field area, 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 according to claim 1, characterized in that The drive assembly also includes: A second magnet array, comprising a fourth magnet, a fifth magnet and a sixth magnet arranged along a second direction, wherein the internal magnetic fields of the fourth magnet and the sixth magnet are in opposite directions, and the internal magnetic field of the fifth magnet is arranged along the second direction, so as to form a second strong magnetic field region on the same side of the fourth magnet and the sixth magnet; The second coil array includes a third coil and a fourth coil arranged at intervals along the second direction, the third coil and the fourth coil are arranged in the second strong magnetic field region, the axial direction of the third coil is arranged along the internal magnetic field direction of the fourth magnet, the axial direction of the fourth coil is arranged along the internal magnetic field direction of the sixth magnet, and the second direction intersects with the first direction.

3. The drive assembly according to claim 2, characterized in that: 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: include: First carrier; a second carrier, movably disposed on the first carrier; The drive assembly according to claim 2 or 3, connected to the first carrier and the second carrier, so as to drive the second carrier to move relative to the first carrier in a set plane; The first direction and the second direction are located in the set plane.

5. The anti-shake mechanism according to claim 4, characterized in that: The anti-shake mechanism also includes: A rolling support assembly rollingly abuts between the first carrier and the second carrier; A tensioning assembly is connected between the first carrier and the second carrier.

6. The anti-shake mechanism according to claim 5, characterized in that: The tensioning assembly includes a magnetic attraction component, which is disposed on the first carrier and is disposed within the magnetic field range of the first magnet array on the second carrier.

7. A camera module, characterized in that: include: Base; The anti-shake mechanism according to any one of claims 4 to 6, which is movably arranged in the base along the third direction; A lens is arranged on the second carrier, and an 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 along the third direction relative to the base; Wherein, the third direction is orthogonal to the set plane.

8. The camera module according to claim 7, characterized in that: The focusing assembly comprises a focusing magnet and a focusing coil which are arranged opposite to each other, one of which is arranged on the base, and the other is arranged on the first carrier.

9. The camera module according to claim 8, characterized in that: The camera module also includes a flexible circuit board, which is arranged in the base; The focusing coil, the first coil array and the second coil array are arranged on the flexible circuit board.

10. The camera module according to claim 9, characterized in that: The flexible circuit board is vertically arranged in the base along the third direction, and the flexible circuit board is U-shaped as a whole and is arranged around the circumferential side of the first carrier; The focusing coil, the first coil array, and the second coil array are arranged at intervals along the circumference of the first carrier.

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