CN216248516U - Drive assembly, camera module and electronic equipment - Google Patents

Abstract

The utility model provides a driving assembly, a camera module and electronic equipment. The drive assembly includes: the first lens base is used for installing the first lens group; the first magnetic conduction piece is fixedly arranged in the camera module and comprises a first magnetic conduction arm extending along a first direction; the first magnetic part is arranged close to the first magnetic conduction part and used for magnetizing the first magnetic conduction part; the first coil is fixedly connected with the first mirror base and sleeved on the first magnetic guide arm; the first magnetic part and the first magnetic conduction part jointly form a magnetic field to drive the electrified first coil to slide on the first magnetic conduction arm and drive the first mirror seat to slide along the first direction. The sliding speed, direction and sliding distance of the first lens group along the first direction can be realized by controlling the direction and the size of the current introduced by the first coil, so that the sliding control of the first lens group is realized, and the zooming of the camera module is realized.

Description

Drive assembly, camera module and electronic equipment

Technical Field

The utility model belongs to the technical field of optics, and particularly relates to a driving assembly, a camera module and electronic equipment.

Background

At present, the requirements of users for the long focus and the zooming of shooting devices such as mobile phones and the like are higher and higher. In order to realize zooming, the lens groups in the camera module are usually required to move, and generally, the lens groups are moved by a screw and a stepping motor to realize zooming. However, the lens group is driven by the stepping motor to move, a screw rod connected with the stepping motor in a transmission manner needs to be arranged, so that the size of the camera module is large, the stepping motor drives the focusing precision to be poor, and the defects that the user experience is influenced by large driving noise exist.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a drive assembly enabling control of movement of a lens group for zoom and solving at least one of the above problems.

In order to realize the purpose of the utility model, the utility model provides the following technical scheme:

a drive assembly for driving movement of a lens group within a camera module, the lens group comprising a first lens group, the drive assembly comprising: a first lens base for mounting the first lens group; the first magnetic conduction piece is fixedly arranged in the camera module and comprises a first magnetic conduction arm extending along a first direction; the first magnetic part is arranged close to the first magnetic conduction part and used for magnetizing the first magnetic conduction part; the first coil is fixedly connected with the first mirror base and sleeved on the first magnetic guide arm; the first magnetic part and the first magnetic conducting part jointly form a magnetic field to drive the electrified first coil to slide on the first magnetic conducting arm and drive the first mirror seat to slide along the first direction.

Through first coil and first microscope base fixed connection, the first magnetic part can drive the first coil of circular telegram and slide on the first magnetic conduction arm of first magnetic conduction piece with the first magnetic conduction piece common magnetic field that forms to drive first microscope base and slide along the first direction, first lens battery is installed in first microscope base, also is first lens battery and slides along the first direction. And the adjustment of the sliding speed, direction and sliding distance of the first lens group along the first direction can be realized by controlling the direction and the size of the current introduced by the first coil, so that the sliding control of the first lens group is realized, and the zooming of the camera module is realized. According to the scheme, the combination of the stepping motor and the screw is replaced by the combination of the first magnetic part, the first magnetic conduction part and the first coil, the screw and the stepping motor which occupy a large space are not required to be arranged, and the first magnetic part, the first magnetic conduction part and the first coil can occupy a smaller space relative to the stepping motor and the screw, so that the camera module can be miniaturized; in addition, the movement of the lens group can be controlled directly by controlling the size and the direction of the electrified current of the first coil, and the lens group does not need to be driven by a control stepping motor and then is driven by a screw rod, so that the zooming precision and the speed of responding zooming can be improved; in addition, the coil is sleeved on the first magnetic conduction arm to slide, so that the driving noise can be greatly reduced, and the user experience is improved.

Furthermore, the first magnetic conduction piece is "U" shape, the first magnetic conduction piece still includes with the first magnetic conduction arm is relative and the second magnetic conduction arm that the interval set up, first magnetic piece set up in the second magnetic conduction arm, just first magnetic piece with the first magnetic conduction arm has the interval.

Set first magnetic conduction spare to "U" shape, set up first magnetism spare in with first magnetic conduction arm relative and the second magnetic conduction arm that the interval set up, first magnetism spare can lead the magnetism of magnetism arm with whole first magnetic conduction spare through the second, first coil cover is located first magnetic conduction arm, through the effect in the magnetic field that first magnetism spare and first magnetic conduction spare formed, can drive first coil and slide along the extending direction of first magnetic conduction arm, thereby drive first lens holder and slide along the first direction, also drive first lens group and slide along the first direction.

Further, the first magnetic part is arranged on the surface of the second magnetic conduction arm facing the first magnetic conduction arm; or the first magnetic part is arranged on the surface of the second magnetic conduction arm, which is opposite to the first magnetic conduction arm; or, the first magnetic piece is sleeved on the second magnetic guide arm.

The first magnetic piece can be in a strip shape and can be respectively attached to the surface of the second magnetic conduction arm facing to or back to the first magnetic conduction arm; the first magnetic member may also be annular, and may be sleeved on the second magnetic conductive arm. The magnetization of the first magnetic conduction piece can be well realized through the mode of pasting or sleeving. In addition, when the first magnetic part is in a strip shape and is attached to the surface of the second magnetic conduction arm facing the first magnetic conduction arm, the first magnetic part is accommodated in the U-shaped groove of the first magnetic conduction part, so that an extra accommodating space is not required to be occupied, the miniaturization of the driving assembly is further facilitated, and the miniaturization of the camera module is further realized.

Furthermore, the driving assembly further comprises a second magnetic conduction piece and a second magnetic piece, and the second magnetic conduction piece is fixedly arranged in the camera module; the second magnetic conduction piece is U-shaped and comprises a third magnetic conduction arm and a fourth magnetic conduction arm which are opposite and arranged at intervals, the second magnetic conduction piece and the first magnetic conduction piece are arranged side by side, and the third magnetic conduction arm is attached to the first magnetic conduction arm so that the second magnetic conduction arm, the first magnetic conduction arm, the third magnetic conduction arm and the fourth magnetic conduction arm are sequentially arranged; the second magnetic part is arranged on the fourth magnetic conduction arm; the first coil is sleeved on the third magnetic conduction arm and the first magnetic conduction arm.

The magnetic field generated by the combination of the two groups of magnetic parts and the magnetic conduction parts can enable the electrified first coil to generate equidirectional force, so that the lens group can move faster and respond to zooming faster.

Further, the third magnetic conductive arm and the first magnetic conductive arm are of an integrated structure.

The third magnetic conduction arm and the first magnetic conduction arm are of an integral structure, namely the first magnetic conduction part and the second magnetic conduction part are integrated, so that the relative fixation of the first magnetic conduction part and the second magnetic conduction part is facilitated, the structure of the first magnetic conduction part and the structure of the second magnetic conduction part are more compact, and the miniaturization of the driving assembly is further realized.

Further, the driving assembly further comprises a second magnetic part, the first magnetic part is in a strip shape, the first magnetic part and the second magnetic part are sequentially arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

The first magnetic part, the first magnetic conduction part and the second magnetic part are sequentially arranged at intervals along the second direction, namely the first magnetic part and the second magnetic part are not in direct contact with the first magnetic conduction part, the first magnetic conduction part is magnetized through a magnetic field formed by the first magnetic part and the second magnetic part, and then the energized coil is driven to slide along the first direction by the magnetic field formed by the first magnetic conduction part, the first magnetic part and the second magnetic part together, so that the first lens base and the first lens set arranged in the first lens base are driven to slide along the first direction. The structure of this embodiment is simpler.

Furthermore, the driving assembly further comprises a second lens base arranged at an interval with the first lens base and a second coil arranged at an interval with the first coil, and the second lens base is fixedly connected with the second coil; the lens group further comprises a second lens group, and the second lens base is used for mounting the second lens group; the second coil is sleeved on the first magnetic conduction arm; the magnetic field formed by the first magnetic part and the first magnetic conduction part drives the electrified second coil to slide on the first magnetic conduction arm and drive the second lens base to slide along the first direction.

The driving assembly can further comprise a second lens base arranged at an interval with the first lens base and a second coil arranged at an interval with the first coil, the second lens base is fixedly connected with the second coil, the second lens base is used for installing a second lens set, and the second coil is sleeved on the first magnetic guide arm. The second lens set is installed in the second lens base and fixedly connected with the second coil, and the second coil which is electrified is driven to slide along the extending direction of the first magnetic conduction arm through a magnetic field formed by the first magnetic part and the first magnetic conduction part together, so that the second lens base and the second lens set installed in the second lens base are driven to slide along the first direction. Therefore, the current magnitude and direction of the first coil and the current magnitude and direction of the second coil are respectively controlled, so that the first lens group and the second lens group can be respectively controlled to move in the first direction, the zoom range of the camera module is larger, and meanwhile zooming is responded more quickly.

Furthermore, the driving assembly further comprises a guide piece, the guide piece is arranged in parallel to the first magnetic conduction arm, the first lens base comprises a guide matching structure matched with the guide piece, and the first lens base can stably slide along the first direction through the mutual matching action of the guide piece and the guide matching structure.

The first lens base stably slides along the first direction through the mutual matching action of the guide piece and the guide matching structure. Therefore, the problem that the first lens seat rotates around the shaft (the first magnetic guide arm) or slides and deviates when sliding can be avoided, so that the zoom precision of the camera module is prevented from being influenced, and the imaging quality of the camera module is improved.

Furthermore, the guide piece is a guide rod, the guide matching structure is a guide hole, the number of the guide rod is equal to that of the guide hole, and the guide rod penetrates through the guide hole; or, the guide is a slide rail, the guide matching structure is a guide convex strip, and the guide convex strip is arranged on the slide rail and slides along the slide rail.

The mutual cooperation between guide bar and guiding hole, slide rail and the direction sand grip, the homoenergetic plays fine guide effect to the slip of first microscope base along first direction, avoids first microscope base to appear when sliding and rotates around axle (first magnetic arm of leading), perhaps the problem of slip off normal to avoid influencing the precision that zooms of camera module, improve the formation of image quality of camera module.

In another aspect, the present invention further provides a driving assembly for driving a lens group in a camera module to move, where the lens group includes a first lens group, and the driving assembly includes: a first lens base for mounting the first lens group; the first magnetic part is fixedly arranged in the camera module and is U-shaped, and the first magnetic part comprises a first magnetic arm and a second magnetic arm which are opposite and arranged at an interval; the first coil is fixedly connected with the first mirror base and sleeved on the first magnetic arm; the magnetic field formed by the first magnetic part drives the electrified first coil to slide on the first magnetic arm and drives the first lens base to slide along the first direction.

The first magnetic part that is "U" shape through direct adoption replaces the combination of foretell magnetic part and magnetic conduction spare, and the effect that actually plays is the same with above-mentioned effect, but the structure is simpler, and can alleviate the weight of camera module, also can realize the miniaturization of camera module to a certain extent simultaneously.

The utility model further provides a camera module, which comprises a lens group and the driving assembly in any embodiment, wherein the lens group is mounted on the driving assembly, and the driving assembly drives the lens group to move so as to realize zooming.

The lens group is driven by the driving component, and the driving component can realize miniaturization, and the camera module can also realize miniaturization correspondingly; in addition, the movement of the lens group is controlled by controlling the size and the direction of the electrified current of the first coil, and the lens group does not need to be driven by a control stepping motor and then is driven by a screw rod, so that the zooming precision of the camera module can be improved, and the speed of responding zooming can be improved; in addition, the coil is sleeved on the first magnetic conduction arm to slide, so that the driving noise can be greatly reduced, and the user experience is improved.

The utility model further provides electronic equipment which comprises a body and the camera module, wherein the camera module is mounted on the body.

The camera module can respond better and zoom, and can reduce the drive noise by a wide margin, improves user experience, can realize the miniaturization simultaneously, is favorable to electronic equipment miniaturization, can improve the formation of image quality that electronic equipment shot the image simultaneously, satisfies user demand better, improves user experience.

Drawings

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

FIG. 1 is a schematic view of a camera module according to an embodiment;

FIG. 2 is a schematic structural diagram of one embodiment of a drive assembly;

FIG. 3 is a side view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic structural view of another embodiment of a drive assembly;

FIG. 5 is a side view of a portion of the structure of FIG. 4;

FIG. 6 is a schematic structural view of another embodiment of a drive assembly;

FIG. 7 is a side view of a portion of the structure of FIG. 6;

FIG. 8 is a side elevational view of a portion of the structure of another embodiment of a drive assembly;

FIG. 9 is a side view of a portion of the structure of yet another embodiment of a drive assembly;

FIG. 10 is a schematic structural view of another embodiment of a drive assembly;

FIG. 11 is a schematic structural view of another embodiment of a drive assembly;

FIG. 12 is a schematic diagram of the operation of one embodiment of the drive assembly;

FIG. 13 is a schematic structural view of another embodiment of a drive assembly;

FIG. 14 is a side view of the partial structure of FIG. 13;

FIG. 15 is a schematic view of an electronic device of an embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.

Referring to fig. 1, the present invention provides a camera module 500, which includes a lens assembly 200 and a driving assembly 100, wherein the lens assembly 200 is mounted on the driving assembly 100, and the driving assembly 100 drives the lens assembly 200 to move for zooming.

Referring to FIGS. 2-5, a lens assembly 200 includes a first lens assembly 25. The driving assembly 100 includes a first lens holder 20, a first magnetic conducting member 40, a first magnetic member 60 and a first coil 80. The first mount 20 has a first mounting hole 29, and the first mounting hole 29 is used for mounting the first lens group 25. The first magnetic conductive member 40 is fixedly disposed in the camera module 500, and the first magnetic conductive member 40 includes a first magnetic conductive arm 42 extending along the first direction X. The first magnetic member 60 is disposed near the first magnetic conductive member 40, and is configured to magnetize the first magnetic conductive member 40. The first coil 80 is fixedly connected to the first lens holder 20, and the first coil 80 is sleeved on the first magnetic guide arm 42.

The magnetic field formed by the first magnetic member 60 and the first magnetic conductive member 40 drives the energized first coil 80 to slide on the first magnetic conductive arm 42, and drives the first mirror base 20 to slide along the first direction X.

It is understood that the positioning of the first magnetic member 60 adjacent to the first magnetic conductive member 40 includes the first magnetic member 60 directly contacting the first magnetic conductive member 40; also included is an arrangement in which first magnetic member 60 is spaced from, i.e., not in direct contact with, first magnetically permeable member 40.

Through the fixed connection of the first coil 80 and the first lens holder 20, the magnetic field formed by the first magnetic component 60 and the first magnetic conducting component 40 drives the energized first coil 80 to slide on the first magnetic conducting arm 42 of the first magnetic conducting component 40, so as to drive the first lens holder 20 to slide along the first direction X, and the first lens group 25 is mounted on the first lens holder 20, that is, the first lens group 25 slides along the first direction X. The sliding speed, direction and sliding distance of the first lens set 25 along the first direction X can be controlled by controlling the direction and magnitude of the current applied to the first coil 80, so as to control the sliding of the first lens set 25 and realize zooming of the camera module 500.

Because this scheme has replaced the combination of step motor and screw rod with the combination of first magnetism spare 60, first magnetic conduction spare 40 and first coil 80, need not to set up screw rod and the step motor who occupies great space, first magnetism spare 60, first magnetic conduction spare 40 and first coil 80 can occupy littleer space for step motor and screw rod to can realize camera module 500's miniaturization.

In addition, since the movement of the lens group 200 can be controlled directly by controlling the magnitude and direction of the current of the first coil 80, it is not necessary to control the stepping motor to drive and then to drive the stepping motor through the screw, so that the precision of zooming and the speed of responding to zooming can be improved.

In addition, since the coil is sleeved on the first magnetic guide arm 42 to slide, driving noise can be greatly reduced, and user experience is improved.

Referring to fig. 2, in some embodiments, the first magnetic conducting member 40 is U-shaped, the first magnetic conducting member 40 includes a first magnetic conducting arm 42 and a second magnetic conducting arm 44 opposite to and spaced apart from the first magnetic conducting arm 42, the first magnetic member 60 is disposed on the second magnetic conducting arm 44, and the first magnetic member 60 is spaced apart from the first magnetic conducting arm 42.

The first magnetic conducting member 40 is set to be U-shaped, the first magnetic member 60 is set to the second magnetic conducting arm 44, the first magnetic member 60 magnetizes the whole first magnetic conducting member 40 through the second magnetic conducting arm 44, the first coil 80 is sleeved on the first magnetic conducting arm 42, and under the action of a magnetic field formed by the first magnetic member 60 and the first magnetic conducting member 40, the first coil 80 can be driven to slide along the extending direction of the first magnetic conducting arm 42, so as to drive the first lens holder 20 to slide along the first direction X, that is, to drive the first lens group 25 to slide along the first direction X.

Referring to fig. 2 and 3, in some embodiments, the first magnetic element 60 may be a bar shape and may be disposed on a surface of the second magnetic guiding arm 44 facing the first magnetic guiding arm 42. Specifically, the first magnetic member 60 may be attached to the surface of the second magnetic arm 44 facing the first magnetic arm 42, such as by gluing, or by directly attaching the two together through the packaging of the package, for example.

Referring to fig. 4 and fig. 5, in other embodiments, the first magnetic element 60 may also be disposed on a surface of the second magnetic guiding arm 44 facing away from the first magnetic guiding arm 42. Specifically, the first magnetic element 60 may be attached to the surface of the second magnetic arm 44 facing away from the first magnetic arm 42, such as by gluing, or by directly attaching the two together through the packaging of the package, for example.

In other embodiments, the first magnetic member 60 may also be ring-shaped, and may also be sleeved on the second magnetic guiding arm 44. The present invention does not specifically limit the arrangement manner between the first magnetic element 60 and the second magnetic arm 44.

The first magnetic element 60 may be a long strip, and may be attached to the surface of the second magnetic arm 44 facing toward or away from the first magnetic arm 42; the first magnetic member 60 may also be ring-shaped, and may be sleeved on the second magnetic guiding arm 44. The magnetization of the first magnetic conduction member 40 can be well realized by means of sticking or sleeving. In addition, when the first magnetic member 60 is a strip and is attached to the surface of the second magnetic guiding arm 44 facing the first magnetic guiding arm 42, since the first magnetic member 60 is accommodated in the U-shaped groove of the first magnetic guiding member 40, no additional accommodation space is required, which is beneficial to further realizing the miniaturization of the driving assembly 100, and further realizing the miniaturization of the camera module 500.

Referring to fig. 6 and 7, in some embodiments, the driving assembly 100 further includes a second magnetic conducting member 50 and a second magnetic member 70, and the second magnetic conducting member 50 is fixedly disposed in the camera module 500. The second magnetic conducting member 50 is U-shaped, and includes a third magnetic conducting arm 52 and a fourth magnetic conducting arm 54 which are oppositely and alternately arranged, the second magnetic conducting member 50 and the first magnetic conducting member 40 are arranged side by side, and the third magnetic conducting arm 52 is attached to the first magnetic conducting arm 42, so that the second magnetic conducting arm 44, the first magnetic conducting arm 42, the third magnetic conducting arm 52 and the fourth magnetic conducting arm 54 are sequentially arranged. The second magnetic element 70 is disposed on the fourth magnetic conductive arm 54, and the first coil 80 is sleeved on the third magnetic conductive arm 52 and the first magnetic conductive arm 42.

The magnetic field generated by the combination of the first magnetic member 60 and the second magnetic member 40 and the first magnetic conductive member 40 and the second magnetic conductive member 50 can make the energized first coil 80 generate a force in the same direction, so that the lens group can be moved faster and respond to zooming faster. The principle of operation of this embodiment will be explained in detail below.

Referring to fig. 8, in some embodiments, the third magnetic conductive arm 52 and the first magnetic conductive arm 42 may also be an integrated structure. It can be understood that the third magnetic arm 52 and the first magnetic arm 42 are integrated, including that the third magnetic arm 52 and the first magnetic arm 42 are integrally formed, i.e. they are an integral body and cannot be separated; the third magnetic arm 52 and the first magnetic arm 42 may be fixed to each other by means of gluing, welding, or the like without any external force.

The third magnetic conduction arm 52 and the first magnetic conduction arm 42 are integrated, which is beneficial to the relative fixation of the first magnetic conduction member 40 and the second magnetic conduction member 50, and can make the structures of the first magnetic conduction member 40 and the second magnetic conduction member 50 more compact, further realizing the miniaturization of the driving assembly 100.

Referring to fig. 9, in some embodiments, the driving assembly 100 includes a first magnetic member 60 and a second magnetic member 70, the first magnetic member 40 is elongated, and the first magnetic member 60, the first magnetic member 40 and the second magnetic member 70 are sequentially arranged at intervals along a second direction Y, where the second direction Y is perpendicular to the first direction X.

The first magnetic member 60, the first magnetic conducting member 40, and the second magnetic member 70 are sequentially arranged at intervals along the second direction Y, that is, the first magnetic member 60 and the second magnetic member 70 are not in direct contact with the first magnetic conducting member 40, the first magnetic conducting member 40 is magnetized by a magnetic field formed by the first magnetic member 60 and the second magnetic member 70, and then the energized coil is driven by the magnetic field formed by the first magnetic conducting member 40, the first magnetic member 60, and the second magnetic member 70 to slide along the first direction X, so as to drive the first lens holder 20 and the first lens assembly 25 mounted in the first lens holder 20 to slide along the first direction X. The structure of the embodiment is simpler and is convenient to implement.

Referring to fig. 10 and 11, in some embodiments, the driving assembly 100 further includes a second lens base 30 spaced apart from the first lens base 20 and a second coil 90 spaced apart from the first coil 80, and the second lens base 30 is fixedly connected to the second coil 90. The lens assembly 200 further includes a second lens group 35, and the second mount 30 has a second mounting hole 39, and the second mounting hole 39 is used for mounting the second lens group 35. The second coil 90 is sleeved on the first magnetic arm 42. The magnetic field formed by the first magnetic member 60 and the first magnetic conductive member 40 drives the energized second coil 90 to slide on the first magnetic conductive arm 42, and drives the second lens holder 30 to slide along the first direction X.

The driving assembly 100 may further include a second lens holder 30 and a second coil 90, the second lens holder 30 is used for mounting the second lens group 35, the second coil 90 is fixedly connected to the second lens holder 30, and the second coil 90 is sleeved on the first magnetic guiding arm 42 (as shown in fig. 10) or sleeved on both the first magnetic guiding arm 42 and the second magnetic guiding arm 52 (as shown in fig. 11).

Like the first lens holder 20 and the first coil 80, the second lens set 35 is mounted in the second lens holder 30 and is fixedly connected to the second coil 90, and the second coil 90, which is powered by the magnetic field formed by the first magnetic member 60 and the first magnetic conductive member 40, slides along the extending direction of the first magnetic conductive arm 42, thereby driving the second lens holder 30 and the second lens set 35 mounted in the second lens holder 30 to slide along the first direction X.

In this way, by controlling the magnitude and direction of the current of the first coil 80 and the second coil 90, respectively, the movement of the first lens group 25 and the second lens group 35 in the first direction X can be controlled, respectively, so that the zoom range of the camera module 500 is wider, and the zoom response is faster.

It is understood that in some other embodiments, more lens holder and coil combinations can be included, and more lens groups can be mounted in the lens holder, such as a third lens holder and a third coil, and the third lens group is mounted in the third lens holder; the fourth lens group is arranged on the fourth lens base and the like. Thereby enabling a larger zoom range of the camera module 500 while responding to zooming more quickly.

Referring to fig. 2, in some embodiments, the driving assembly 100 may further include a guiding element 10, the guiding element 10 is disposed parallel to the first magnetic guiding arm 42, the first mirror base 20 includes a guiding engagement structure 22 engaged with the guiding element 10, and the guiding element 10 and the guiding engagement structure 22 cooperate with each other to stably slide the first mirror base 20 along the first direction X.

The first mirror base 20 is stably slid along the first direction X by the cooperation of the guide 10 and the guide engagement structure 22. Thus, the problem of rotation around the shaft (the first magnetic guide arm 42) or sliding deviation of the first lens holder 20 during sliding can be avoided, so as to avoid affecting the zoom precision of the camera module 500 and improve the imaging quality of the camera module 500.

In some embodiments, the guiding element 10 may be a guiding rod, the guiding engagement structure 22 may be a guiding hole, the number of the guiding rods may be one or multiple, the number of the guiding rods is equal to the number of the guiding holes, and each guiding rod is inserted into the corresponding guiding hole. As shown in fig. 2, the number of the guide rods is two, and accordingly, the number of the guide holes is two. In some other embodiments, the number of the guide rods and the guide holes may also be one, three, etc., and the present invention is not limited thereto.

In other embodiments, the guiding element 10 may also be a sliding rail, and the guiding engagement structure 22 may also be a guiding rib, which is attached to the sliding rail and slides along the sliding rail (not shown in the figure).

The mutual cooperation between guide bar and guiding hole, slide rail and the direction sand grip, the homoenergetic can play fine guide effect to the slip of first microscope base 20 along first direction X, avoids first microscope base 20 to appear when sliding and to pivot (first magnetic arm 42) is rotatory, perhaps the problem of slip off normal to avoid influencing camera module 500's the precision that zooms, improve camera module 500's formation of image quality.

It is to be understood that the above-described examples of the guide 10 and the guide engagement structure 22 are merely some alternative embodiments provided by the present invention, and no specific limitation on the guide 10 and the guide engagement structure 22 is intended.

By driving the lens assembly 200 by the driving assembly 100, the driving assembly 100 can be miniaturized, and thus the camera module 500 can be miniaturized accordingly.

In addition, since the movement of the lens group is controlled by controlling the magnitude and direction of the current of the first coil 80, the lens group does not need to be driven by a control stepping motor and then driven by a screw, so that the zoom precision of the camera module 500 can be improved and the speed of responding to zooming can be improved.

In addition, since the coil (the first coil 80 or the second coil 90) is sleeved on the first magnetic guide arm 42 to slide, the driving noise can be greatly reduced, and the user experience can be improved.

Specifically, the lens group 200 may include the first lens group 25 and the second lens group 35 described above. It is understood that the first lens group 25 and the second lens group 35 may each include one or more lenses, the number of the lenses may be flexibly set according to actual needs, and the specific number of the lenses included in the first lens group 25 and the second lens group 35 is not particularly limited in the present invention.

Referring to fig. 12, the operation of the driving assembly will be described in detail with reference to the embodiment shown in fig. 12.

In this embodiment, the driving assembly 100 includes a first magnetic conductive member 40, a second magnetic conductive member 50, a first magnetic member 60, and a second magnetic member 70, and the first magnetic conductive member 40 and the second magnetic conductive member 50 are fixedly disposed in the camera module (not shown in fig. 12). The first magnetic conducting part 40 and the second magnetic conducting part 50 are both U-shaped, the first magnetic conducting part 40 includes a first magnetic conducting arm 42 and a second magnetic conducting arm 44, the second magnetic conducting part 50 includes a third magnetic conducting arm 52 and a fourth magnetic conducting arm 54, the second magnetic conducting part 50 and the first magnetic conducting part 40 are arranged side by side, and the third magnetic conducting arm 52 is attached to the first magnetic conducting arm 42, so that the second magnetic conducting arm 44, the first magnetic conducting arm 42, the third magnetic conducting arm 52 and the fourth magnetic conducting arm 54 are sequentially arranged. The first magnetic element 60 is disposed on the second magnetic arm 44, the second magnetic element 70 is disposed on the fourth magnetic arm 54, and the first coil 80 is disposed on the third magnetic arm 52 and the first magnetic arm 42.

In actual installation, the first magnetic member 60 and the second magnetic member 70 may be installed in a manner that like magnetic poles are opposite to each other, as shown in fig. 12, the N pole of the first magnetic member 60 faces the second magnetic member 70, and the N pole of the second magnetic member 70 faces the first magnetic member 60, and the S poles of the respective structures are as shown in the figure. At this time, the magnetic field formed by the first magnetic member 60 and the first magnetic conductive member 40 is shown as B1, and the magnetic field formed by the second magnetic member 70 and the second magnetic conductive member 50 is shown as B2. The first coil 80 is sleeved on the third magnetic conductive arm 52 and the first magnetic conductive arm 42, and since the first coil 80 is a complete circuit loop, the current flowing direction of the first coil 80 is opposite between B1 and B2, for example, B1 is vertical to the paper surface facing outwards, as indicated by "; and is vertically facing inward at B2, indicated by [ ] in the figure. According to the left-hand rule, the ampere force F1 applied to the first coil 80 in B1 is leftward, and the ampere force F2 applied to the first coil 80 in B2 is also leftward, that is, the resultant force F applied to the first coil 80 in B1 and B2 is in the same direction, and F is F1+ F2, at this time, the first coil 80 slides leftward under the influence of the ampere force. This enables the lens group movement to be completed more quickly and in response to zooming more quickly.

Similarly, when the current applied to the first coil 80 is reversed, the ampere forces F1 and F2 applied to B1 and B2 are the same, but F1 and F2 are all right, and the first coil 80 can be driven to slide right. In this manner, the direction in which the first coil 80 slides can be controlled by the direction of the current passed to the first coil 80.

The left-hand rule is a law for determining the relationship among the direction of the ampere force F (or movement) applied to the electrified lead when the electrified lead is in a magnetic field, the direction of the magnetic induction intensity B and the direction of the current I of the electrified conductor bar. The specific judgment method is as follows: the left hand is stretched to enable the thumb to be perpendicular to the other four fingers and in the same plane, so that the magnetic induction lines flow in from the palm of the hand, the four fingers point to the current direction, and the thumb points to the ampere force direction (namely the conductor stress direction).

In addition, it can be understood that since the formula F (an) of the ampere force is BIL, the magnitude of the ampere force is proportional to the magnitude of the supplied current, so that the sliding speed of the first coil 80 can be controlled by controlling the magnitude of the supplied current to the first coil 80. Meanwhile, the moving state of the first coil 80 may be controlled by controlling the power on and off of the first coil 80, and the first coil 80 is stationary in the case of power off.

The arrangement of the first magnetic member 60 and the second magnetic member 70 may cause a repulsive force between the same-name magnetic poles between the first magnetic member 40 and the second magnetic member 50, and the repulsive force may be overcome by some external force, for example, by gluing, or by packaging and fixing the package, so as to overcome the repulsive force to achieve relative fixation.

Referring to fig. 13-14, in other embodiments, the lens assembly 200 includes the first lens assembly 25, and the driving assembly 100 includes the first lens holder 20, the first magnetic element 60 and the first coil 80. The first mount 20 has a first mounting hole 29, and the first mounting hole 29 is used for mounting the first lens group 25. The first magnetic member 60 is fixedly disposed in the camera module 500, the first magnetic member 60 is U-shaped, and the first magnetic member 60 includes a first magnetic arm 62 and a second magnetic arm 64 disposed opposite to each other and at an interval. The first coil 80 is fixedly connected to the first lens holder 20, and the first coil 80 is sleeved on the first magnetic arm 62. The magnetic field formed by the first magnetic member 60 drives the energized first coil 80 to slide on the first magnetic arm 62, and drives the first mirror base 20 to slide along the first direction X.

Compared with the above embodiment, in this embodiment, the first magnetic member 60 in the shape of "U" is directly used to replace the combination of the magnetic member and the magnetic conductive member, which is substantially the same as the above effect, but the structure is simpler, the weight of the camera module 500 can be reduced, and the camera module 500 can be miniaturized to a certain extent.

Of course, similar to the above embodiment, in some other embodiments, a second magnetic member may be further included, and the second magnetic member is disposed side by side with the first magnetic member 60, and together drives the energized first coil 80 to slide on the first magnetic arm 62, and drives the first lens holder 20 to slide along the first direction X. Since the structure and principle are substantially similar to those of the above embodiments, the present invention is not described herein again.

The operation principle of other embodiments of the present invention is substantially the same as that described above, and thus, the detailed description thereof is omitted. It should be noted that the above description is only for the purpose of facilitating understanding of the principle of action analysis of a specific embodiment exemplarily given to the technical solution of the present invention, and should not be construed as limiting the technical solution of the present invention.

Referring to fig. 15, the present invention further provides an electronic apparatus 1000, where the electronic apparatus 1000 includes a main body 600 and the camera module 500, and the camera module 500 is mounted on the main body 600.

The camera module 500 can better respond to zooming, can reduce driving noise by a wide margin, improves user experience, can realize miniaturization simultaneously, is favorable to the miniaturization of electronic equipment 1000, can improve the imaging quality that electronic equipment 1000 took the image simultaneously, satisfies user demand better, improves user experience.

The electronic device 1000 includes, but is not limited to, a cell phone, a tablet, a smart watch, and the like. The utility model is not limited with respect to the specific type of electronic device 1000.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (12)

1. A drive assembly for driving movement of a lens assembly within a camera module, the lens assembly comprising a first lens assembly, the drive assembly comprising:

a first lens base for mounting the first lens group;

the first magnetic conduction piece is fixedly arranged in the camera module and comprises a first magnetic conduction arm extending along a first direction;

the first magnetic part is arranged close to the first magnetic conduction part and used for magnetizing the first magnetic conduction part;

the first coil is fixedly connected with the first mirror base and sleeved on the first magnetic guide arm;

the first magnetic part and the first magnetic conducting part jointly form a magnetic field to drive the electrified first coil to slide on the first magnetic conducting arm and drive the first mirror seat to slide along the first direction.

2. The drive assembly of claim 1, wherein the first magnetic conducting member is U-shaped, the first magnetic conducting member further comprising a second magnetic conducting arm disposed opposite to and spaced apart from the first magnetic conducting arm, the first magnetic member being disposed on the second magnetic conducting arm, and the first magnetic member being spaced apart from the first magnetic conducting arm.

3. The driving assembly as claimed in claim 2, wherein the first magnetic member is disposed on a surface of the second magnetic arm facing the first magnetic arm; or the first magnetic part is arranged on the surface of the second magnetic conduction arm, which is opposite to the first magnetic conduction arm; or, the first magnetic piece is sleeved on the second magnetic guide arm.

4. The drive assembly of claim 2,

the driving assembly further comprises a second magnetic conduction piece and a second magnetic piece, and the second magnetic conduction piece is fixedly arranged in the camera module;

the second magnetic conduction piece is U-shaped and comprises a third magnetic conduction arm and a fourth magnetic conduction arm which are opposite and arranged at intervals, the second magnetic conduction piece and the first magnetic conduction piece are arranged side by side, and the third magnetic conduction arm is attached to the first magnetic conduction arm so that the second magnetic conduction arm, the first magnetic conduction arm, the third magnetic conduction arm and the fourth magnetic conduction arm are sequentially arranged;

the second magnetic part is arranged on the fourth magnetic conduction arm;

the first coil is sleeved on the third magnetic conduction arm and the first magnetic conduction arm.

5. The drive assembly as recited in claim 4, wherein said third magnetically conductive arm is a unitary structure with said first magnetically conductive arm.

6. The drive assembly of claim 1, further comprising a second magnetic member, wherein the first magnetic member is elongated, and the first magnetic member, and the second magnetic member are sequentially spaced along a second direction, the second direction being perpendicular to the first direction.

7. Drive assembly as claimed in any of the claims 1-6,

the driving assembly further comprises a second lens base arranged at an interval with the first lens base and a second coil arranged at an interval with the first coil, and the second lens base is fixedly connected with the second coil;

the lens group further comprises a second lens group, and the second lens base is used for mounting the second lens group;

the second coil is sleeved on the first magnetic conduction arm;

the magnetic field formed by the first magnetic part and the first magnetic conduction part drives the electrified second coil to slide on the first magnetic conduction arm and drive the second lens base to slide along the first direction.

8. The drive assembly according to any one of claims 1-6, further comprising a guide member disposed parallel to the first magnetically permeable arm, wherein the first mirror base comprises a guide engagement structure that engages with the guide member, and wherein the first mirror base is configured to stably slide in the first direction by the interaction of the guide member and the guide engagement structure.

9. The drive assembly of claim 8,

the guide piece is a guide rod, the guide matching structure is a guide hole, the number of the guide rod is equal to that of the guide hole, and the guide rod penetrates through the guide hole; or,

the guide piece is a slide rail, the guide matching structure is a guide convex strip, and the guide convex strip is arranged on the slide rail and slides along the slide rail.

10. A drive assembly for driving movement of a lens assembly within a camera module, the lens assembly comprising a first lens assembly, the drive assembly comprising:

a first lens base for mounting the first lens group;

the first magnetic part is fixedly arranged in the camera module and is U-shaped, and the first magnetic part comprises a first magnetic arm and a second magnetic arm which are opposite and arranged at an interval;

the first coil is fixedly connected with the first mirror base and sleeved on the first magnetic arm;

the magnetic field formed by the first magnetic part drives the electrified first coil to slide on the first magnetic arm and drives the first lens base to slide along the first direction.

11. A camera module comprising a lens group and a drive assembly according to any one of claims 1 to 10, said lens group being mounted to said drive assembly, said drive assembly driving said lens group for zoom movement.

12. An electronic device, comprising a body and the camera module of claim 11, wherein the camera module is mounted to the body.

Images