CN218824892U

CN218824892U - Lens driving device

Info

Publication number: CN218824892U
Application number: CN202320066027.5U
Authority: CN
Inventors: 请求不公布姓名; 吴可中; 彭坤; 林聪�; 刘富泉; 吕新科
Original assignee: Henan Hozel Electronics Co Ltd
Current assignee: Henan Hozel Electronics Co Ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-04-07
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a lens driving device, which comprises a base, a carrier, a plurality of reeds and a plurality of suspension wires, wherein the base comprises a bottom plate, two side plates and two side circuit boards, and the bottom plate is provided with a bottom coil; the two side plates are arranged at intervals and connected with the top surface of the bottom plate; the two side circuit boards are respectively connected with the two side plates and are respectively provided with a side coil; the carrier is movably arranged on the top surface of the bottom plate and is positioned between the two side plates, two sides of the carrier are respectively provided with a side magnet, and the side magnets are matched with the side coils to drive the carrier to move along the direction of an optical axis; the bottom of the carrier is provided with a bottom magnet, and the bottom magnet is matched with the bottom coil to drive the carrier to move along the direction vertical to the optical axis; the metal sheet is arranged in the carrier and used for enhancing the strength of the side magnets and the bottom magnets; a plurality of reeds are connected with the top of the carrier; the bottom ends of the suspension wires are respectively connected with the bottom plate, and the top ends of the suspension wires are respectively connected with the reeds.

Description

Lens driving device

Technical Field

The utility model relates to an optical image equipment technical field, in particular to camera lens drive arrangement.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have a function of taking pictures or recording videos. The use of these electronic devices is becoming more common and the design direction of these electronic devices is being developed to be more convenient and thinner to provide more choices for users.

Some electronic devices with camera or video function are equipped with a lens driving mechanism to drive the optical components of the lens to move, so as to achieve the functions of auto-focusing and optical anti-shake.

Among the prior art, camera lens actuating mechanism's carrier is equipped with the magnetite, and this magnetite needs and the coil cooperation of base in order to drive the carrier motion, and inside the magnetite needs stable connection to the carrier, prevents that the magnetite from droing in the carrier motion process. Therefore, it is necessary to design a carrier in which the magnets can be stably mounted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera lens drive arrangement to solve above-mentioned problem.

In order to solve the above technical problem, the utility model provides a lens driving device, lens driving device includes:

a base, the base comprising:

a bottom plate provided with a bottom coil;

the two side plates are arranged at intervals and connected with the top surface of the bottom plate; and

the two side circuit boards are respectively connected with the two side plates and are respectively provided with a side coil;

the carrier is movably arranged on the top surface of the bottom plate and located between the two side plates, two sides of the carrier are respectively provided with a side magnet, and the side magnets are matched with the side coils to drive the carrier to move along the direction of an optical axis; the bottom of the carrier is provided with a bottom magnet, and the bottom magnet is matched with the bottom coil to drive the carrier to move along the direction vertical to the optical axis; a metal sheet is arranged in the carrier and used for enhancing the strength of the side magnets and the bottom magnets;

a plurality of reeds connected to the top of the carrier; and

the bottom ends of the suspension wires are respectively connected with the bottom plate, and the top ends of the suspension wires are respectively connected with the reeds.

In one embodiment, two sets of the bottom magnets are attached to the bottom of the carrier;

the metal sheet includes:

the two bottom metal sheets are embedded at the bottom of the carrier and respectively correspond to the two groups of bottom magnets; and

the bottom ends of the two side metal sheets are respectively connected with the two bottom metal sheets, and the top ends of the two side metal sheets are far away from the bottom metal sheets, extend and respectively correspond to the two side magnets.

In one embodiment, the two side metal sheets are integrally formed with the two bottom metal sheets, respectively.

In one embodiment, two sides of the carrier are respectively provided with a side mounting groove, and two side magnets are respectively positioned in the two side mounting grooves;

the bottom of carrier is equipped with a plurality of bottom mounting grooves, and is two sets of the bottom magnetite is located in the bottom mounting groove.

In one embodiment, the top surface of the bottom plate is provided with a plurality of shoulders, the top surface of each shoulder is provided with a groove, and damping glue is arranged in each groove; the bottom of the carrier is provided with a plurality of bumps, and the bumps are respectively positioned above the shoulders and are respectively connected with the damping colloids.

In one embodiment, the bottom surface of the bump is curved or provided with a protrusion.

In one embodiment, a built-in circuit is arranged in the base, extends into the side plate and is electrically connected with the side circuit board.

In one embodiment, the built-in circuit extends beyond the top surface of the side panel and is electrically connected to the side circuit board.

In one embodiment, the base further comprises a flexible electrical circuit board overlying the top surface of the base plate and a sensor connected to the flexible circuit board.

In one embodiment, the base further comprises a bottom circuit board overlying the top surface of the flexible circuit board, the bottom coil being disposed within the bottom circuit board.

The utility model discloses an among the camera lens drive arrangement, the carrier is inside to be inlayed and to establish the sheetmetal, and this sheetmetal can strengthen the stability of being connected of lateral part magnetite and bottom magnetite and carrier, and in addition, the bottom of carrier still is equipped with the lug, and the lug is connected with the damping colloid of base, and the bottom surface of lug is equipped with the arch moreover, and a plurality of archs can increase the joint strength of lug and damping colloid, and then strengthen the stability of carrier motion.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is an exploded view of a lens driving device according to an embodiment of the present invention.

Fig. 2 is an assembly view of the carrier, base, bottom circuit board, side circuit boards, spring wires, and four suspension wires in the embodiment of fig. 1.

Fig. 3 and 4 are perspective views of the base in the embodiment of fig. 1.

Fig. 5 is a perspective view of the built-in circuit in the embodiment shown in fig. 3.

Fig. 6 and 7 are perspective views of the carrier in the embodiment of fig. 1.

Fig. 8 is a perspective view of the metal sheet in the embodiment of fig. 6.

Fig. 9 is a perspective view of the carrier, suspension wires, and spring in the embodiment of fig. 1.

Reference numerals are as follows: 100. a lens driving device; 1. a base; 11. a base plate; 111. a shoulder; 112. a groove; 113. damping colloid; 114. a positioning column; 12. a side plate; 13. a built-in circuit; 131. a bottom circuit; 132. a side circuit; 14. a flexible circuit board; 15. a bottom circuit board; 16. a side circuit board; 17. a sensor; 2. a carrier; 21. a side mounting groove; 22. a bottom mounting groove; 23. a side magnet; 24. a bottom magnet; 25. a bump; 26. a protrusion; 27. a lens mounting hole; 28. a metal sheet; 281. a bottom metal sheet; 282. a side metal sheet; 3. a housing; 4. a reed; 5. and (4) suspending the filaments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising", will be understood to have an open, inclusive meaning, i.e., will be interpreted to mean "including, but not limited to", unless the context requires otherwise.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solutions of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

The utility model relates to a lens driving device 100, as shown in fig. 1 and fig. 2, this lens driving mechanism includes base 1, casing 3, carrier 2, a plurality of reeds 4 and many suspension wires 5.

The base 1 is used for carrying a carrier 2, and as shown in fig. 2, 3 and 4, the base 1 includes a bottom plate 11, two side plates 12 and an internal built-in circuit 13. The bottom plate 11 is rectangular plate-shaped, four corners of the bottom plate are respectively provided with a shoulder 111, the top surfaces of the four shoulders 111 are respectively provided with a groove 112, each groove 112 is internally provided with a damping colloid 113, and the damping colloid 113 is used for being connected with the bottom of the carrier 2.

Two curb plates 12 of base 1 respectively with the relative a pair of side parallel arrangement that sets up of bottom plate 11, two curb plates 12 parallel interval set up and be connected with the top surface of bottom plate 11 to two curb plates 12 are close to the relative a pair of side that sets up of bottom plate 11, are used for restricting the motion of carrier 2.

The built-in circuit 13 in the base 1 includes a bottom circuit 131 and a side circuit 132 electrically connected to each other, as shown in fig. 5, the bottom circuit 131 is located in the bottom plate 11, the side circuit 132 is located in the two side plates 12 and extends beyond the top surfaces of the side plates 12, and the top ends of the side circuit 132 are electrically connected to the side circuit board 16. The bottom circuit 131 and the side circuit 132 are integrally formed, and the bottom plate 11 and the side plate 12 are integrally formed by injection molding. In the manufacturing process, only need with whole built-in circuit 13 through the mode of moulding plastics inlay locate bottom plate 11 and two curb plates 12 can, processing is convenient and can increase curb plate 12 and bottom plate 11's joint strength, moreover, bottom circuit 131 and lateral part circuit 132 integrated into one piece, mutually perpendicular sets up, bottom circuit 131 and lateral part circuit 132 restrict each other's motion, can be so that whole built-in circuit 13 is in preset position steadily, can not take place the dislocation condition.

The two side circuit boards 16 are respectively attached to the inner surfaces of the two side plates 12, and the outer surfaces of the two side circuit boards 16 are respectively provided with two connecting ends, which correspond to and are electrically connected to the top ends of the side circuits 132. It should be understood that the two side circuit boards 16 may also be attached to the outer surfaces of the two side plates 12 without limiting the specific locations of the two side circuit boards 16.

In addition, a side coil is arranged in the side circuit board 16, the built-in circuit 13 in the side plate 12 can energize the side coil, reduce the winding of an external power line to the side circuit board 16, and energize the side circuit board 16. In addition, the shape of the built-in circuit 13 in the base 1 is very stable, and the side plate 12 to which the side circuit board 16 is attached can maintain a very stable positional relationship with the side plate 12, that is, the side circuit board 16 has a very stable connection relationship with the built-in circuit 13, so that the circuit stability of the side circuit board 16 can be ensured.

The top surface of the bottom plate 11 is further stacked with a flexible circuit board 14 and a bottom circuit board 15, wherein the flexible circuit board 14 is stacked on the top surface of the bottom plate 11 and can be directly electrically connected with an external power supply or can be electrically connected with a built-in circuit 13 in the bottom plate 11. The flexible circuit board 14 is provided with a plurality of sensors 17 and a control chip, the sensors 17 being operable to sense the position of the carrier 2.

The bottom circuit board 15 is stacked on the top surface of the flexible circuit board 14 and electrically connected to the flexible circuit board 14, and a bottom coil is further disposed in the bottom circuit board 15. In addition, the top surface of the bottom plate 11 is further provided with a positioning column 114, the flexible circuit board 14 and the bottom circuit board 15 are further provided with positioning holes sleeved on the positioning column 114, and the positioning column 114 can sequentially penetrate through the positioning holes of the flexible circuit board 14 to the positioning holes of the bottom circuit board 15, so that the flexible circuit board 14 and the bottom circuit board 15 are conveniently connected with the bottom plate 11 in a positioning manner.

The shell 3 covers the outer parts of the two side plates 12 and is positioned on the top surface of the bottom plate 11, and is clamped with the two side plates 12. In addition, the housing 3 may be connected to the base 1 by other means, such as bolts, adhesion, magnetic attraction, etc., without limiting the specific connection manner between the housing 3 and the base 1.

The carrier 2 is mounted on the top surface of the bottom plate 11 and is located within the housing 3, as shown in fig. 6 and 7, the carrier 2 being movable between two side plates 12. The carrier 2 is provided with lens mounting holes 27, which lens mounting holes 27 are used for mounting lenses. In the embodiment of fig. 6 and 7, the carrier 2 is substantially rectangular, the lens mounting holes 27 penetrate the carrier 2 along two opposite sides of the carrier 2, and the housing 3 is provided with an avoiding hole at one side opposite to the lens mounting hole 27, and the cover avoiding hole is arranged opposite to the lens mounting hole 27 for avoiding light. It should be understood that the present invention is not limited to the specific shape of the carrier 2, and the carrier 2 may be in the form of a sphere or any other arbitrary shape.

The other opposite sides of the carrier 2 are respectively disposed opposite to the two side circuit boards 16, and are respectively provided with side mounting grooves 21. And a side magnet 23 is respectively arranged in each side mounting groove 21, and the two side magnets 23 are respectively matched with the side coils in the two side circuit boards 16 so as to drive the carrier 2 to move along the optical axis direction and further adjust the focal length of the lens.

The bottom of carrier 2 is equipped with a plurality of bottom mounting grooves 22, and a plurality of bottom mounting grooves 22 are two rows of settings, and two rows of bottom mounting grooves 22 are close to the both sides of carrier 2. Bottom magnets 24 are respectively installed in each bottom installation groove 22, and the bottom coils in the bottom magnets 24 and the bottom circuit board 15 are matched to drive the carrier 2 to move in the direction perpendicular to the optical axis, so that the anti-shake function is realized.

In addition, in order to more stably connect the side magnets 23 and the bottom magnets 24 to the carrier 2, a metal sheet 28 is further embedded inside the carrier 2, the metal sheet 28 includes two bottom metal sheets 281 and two side metal sheets 282, the two bottom metal sheets 281 are respectively embedded at the bottom of the carrier 2 and located above the bottom mounting groove 22, and the two bottom metal sheets 281 respectively correspond to the bottom magnets 24 in the two rows of bottom mounting grooves 22, and are used for attracting the bottom magnets 24 in the two rows of bottom mounting grooves 22 and enhancing the magnetic field intensity of the bottom magnets 24.

The two side metal pieces 282 are integrally formed with the two bottom metal pieces 281, respectively, and are disposed substantially perpendicular to the bottom metal pieces 281, and the two side metal pieces 282 correspond to the side magnets 23 in the two side mounting grooves 21, respectively, for attracting the side magnets 23 and enhancing the strength of the side magnets 23. During processing, can place the sheetmetal 28 wholly in the mould, inlay the sheetmetal 28 inside carrier 2 through the mode of moulding plastics, processing is convenient, and sheetmetal 28 can install inside carrier 2 very firmly, lateral part sheetmetal 282 and bottom sheetmetal 281 integrated into one piece, and be perpendicular setting, can restrict each other and remove each other, make holistic sheetmetal 28 can inlay the preset position inside carrier 2 steadily, and then make lateral part magnetite 23 and bottom magnetite 24 be connected to carrier 2 more steadily.

The four reeds 4 are respectively formed by bent spring wires having elasticity, the four reeds 4 are respectively connected to the top of the carrier 2 and are respectively connected with the top ends of the four suspension wires 5, and the bottom ends of the four suspension wires 5 are connected with the top surface of the bottom plate 11. When the carrier 2 moves along the optical axis or in the direction perpendicular to the optical axis, the four reeds 4 are pulled to stretch the reeds 4, and the reeds 4 can generate reverse acting force on the carrier 2 after being stretched, so that the carrier 2 is driven to reset.

The bottom of carrier 2 is equipped with four lugs 25, and four lugs 25 are located four circular bead 111 tops of bottom plate 11 respectively to be connected with damping colloid 113 in four circular bead 111 respectively, and damping colloid 113 has viscoelasticity, and when carrier 2 moved, damping colloid 113 can make the motion of carrier 2 more stable, but also can assist reed 4 drive carrier 2 to stabilize and reset. It will be appreciated that the top surface of the base plate 11 may also be provided with only three shoulders 111 or more shoulders 111, while the bottom of the carrier 2 may also be provided with three lugs 25 or more lugs 25 corresponding to the three shoulders 111 respectively, without limiting the specific number of shoulders 111 and lugs 25.

Preferably, the bottom surface of the bump 25 may be provided with a curved surface or a plurality of strip-shaped protrusions 26 to increase the contact area with the damping colloid 113, thereby increasing the connection strength between the bump 25 and the damping colloid 113. In addition, the plurality of protrusions 26 may also be provided with a spike-shaped structure, and the plurality of protrusions 26 may penetrate into the damping colloid 113, and may also increase the connection strength between the bump 25 and the damping colloid 113.

The utility model discloses an among the camera lens drive arrangement 100, carrier 2 is inside to be inlayed and to establish sheetmetal 28, this sheetmetal 28 can strengthen lateral part magnetite 23 and bottom magnetite 24 and carrier 2's stability of being connected, in addition, carrier 2's bottom still is equipped with lug 25, lug 25 is connected with base 1's damping colloid 113, lug 25's bottom surface is equipped with protruding 26 moreover, a plurality of protruding 26 can increase lug 25 and damping colloid 113's joint strength, and then strengthen the stability of carrier 2 motions.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A lens driving apparatus, comprising:

a base, the base comprising:

a bottom plate provided with a bottom coil;

a plurality of reeds connected to a top of the carrier; and

2. The lens driving device according to claim 1, wherein two sets of the bottom magnets are attached to a bottom of the carrier;

the metal sheet includes:

the bottom ends of the two side metal sheets are respectively connected with the two bottom metal sheets, and the top ends of the two side metal sheets are far away from the bottom metal sheet and extend to correspond to the two side magnets respectively.

3. The lens driving device according to claim 2, wherein the two side metal pieces are integrally formed with the two bottom metal pieces, respectively.

4. The lens driving device according to claim 2, wherein the carrier is provided at both sides thereof with side mounting grooves, respectively, and the two side magnets are located in the two side mounting grooves, respectively;

5. The lens driving device according to claim 1, wherein the bottom plate has a plurality of shoulders on a top surface thereof, the shoulders having grooves on a top surface thereof, and damping rubber disposed in the grooves; the bottom of the carrier is provided with a plurality of convex blocks, and the convex blocks are respectively positioned above the shoulders and are respectively connected with the damping colloids.

6. A lens driving device as claimed in claim 5, wherein the bottom surface of the projection is curved or provided with a protrusion.

7. A lens driving apparatus according to claim 1, wherein a built-in circuit is provided in the base, the built-in circuit extending into the side plate and being electrically connected to the side circuit board.

8. The lens driving device according to claim 7, wherein the built-in circuit extends beyond the top surface of the side plate and is electrically connected to the side circuit board.

9. The lens driving apparatus as claimed in claim 1, wherein the base further includes a flexible circuit board stacked on the top surface of the base plate and a sensor connected to the flexible circuit board.

10. The lens driving apparatus as claimed in claim 9, wherein the base further includes a bottom circuit board stacked on a top surface of the flexible circuit board, the bottom coil being disposed in the bottom circuit board.