CN213957721U

CN213957721U - Lens driving device

Info

Publication number: CN213957721U
Application number: CN202120190701.1U
Authority: CN
Inventors: 彭坤; 林聪�; 刘富泉; 吕新科; 其他发明人请求不公开姓名
Original assignee: Henan Hozel Electronics Co Ltd
Current assignee: Henan Hozel Electronics Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-08-13
Anticipated expiration: 2031-01-22

Abstract

The utility model discloses a camera lens drive arrangement, including carrier, first reed, second reed, base, magnet group and coil assembly. The carrier has an optical element mounting hole extending in a first direction, and a first carrier side portion and a second carrier side portion are formed on both sides of the optical element mounting hole. The carrier is mounted on the base bottom such that the optical element mounting holes are arranged parallel to the base bottom, the magnet group is provided on a surface of at least one of the first base side portion and the second base side portion facing the carrier, and the coil group is provided on at least one of the first carrier side portion and the second carrier side portion and cooperates with the magnet group to drive the carrier to move in the first direction when the coil group is energized. The first reed movably connects the base with the front surface of the carrier, the second reed movably connects the base with the rear surface of the carrier, and the front surface and the rear surface are perpendicular to the first direction.

Description

Lens driving device

Technical Field

The utility model relates to an optics field of making a video recording, concretely relates to camera lens drive arrangement.

Background

The existing periscopic lens component usually adopts a suspension wire structure, however, the suspension wire structure has high assembly difficulty and low reliability, and the suspension wire is easy to damage when being collided to cause the failure of the whole part.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lens driving device to solve the problem that exists among the above-mentioned prior art.

In order to solve the above problems, according to one aspect of the present invention, there is provided a lens driving device including a carrier, a first spring, a second spring, a base, a magnet group, and a coil group,

the carrier having an optical element mounting hole extending in a first direction, first and second carrier side portions formed on both sides of the optical element mounting hole, the chassis having a chassis bottom and first and second chassis side portions formed extending upward from the chassis bottom, the carrier being mounted to the chassis bottom such that the optical element mounting hole is arranged in parallel to the chassis bottom,

the magnet group is arranged on the surface of at least one of the first base side part and the second base side part facing the carrier, and the coil group is arranged on at least one of the first carrier side part and the second carrier side part and matched with the magnet group to drive the carrier to move along the first direction when the coil group is electrified, wherein the magnet group is arranged on the surface of at least one of the first base side part and the second base side part facing the carrier

The first reed movably connects the base with the front surface of the carrier, the second reed movably connects the base with the rear surface of the carrier, and the front surface and the rear surface are perpendicular to the first direction.

In one embodiment, a base embedded metal sheet is arranged in the base, the base embedded metal sheet is electrically connected with at least one of the first spring plate and the second spring plate, and the first spring plate or the second spring plate electrically connected with the base embedded metal sheet is electrically connected with the coil assembly.

In one embodiment, the coil assembly includes a first coil and a second coil respectively disposed at the first carrier side portion and the second carrier side portion, and the magnet assembly includes a first magnet and a second magnet respectively disposed at surfaces of the first base side portion and the second base side portion facing the carrier and respectively engaged with the first coil and the second coil.

In one embodiment, the lens driving apparatus further includes a support disposed at the bottom of the base and supporting the carrier.

In one embodiment, the holder has an elongated body, the bottom of the carrier is provided with a groove matched with the holder, and the holder is movably mounted at the bottom of the base and arranged in the groove.

In one embodiment, the lens driving apparatus further includes a housing that cooperates with the mount and encloses the carrier, the first spring, the second spring, the mount, the set of magnets, and the set of coils.

In one embodiment, the carrier is provided with a winding post, the coil assembly is electrically connected with the winding post, and at least one of the first spring and the second spring is electrically connected with the winding post.

In one embodiment, the base embedded metal sheet comprises a horizontal part and a vertical part, wherein the horizontal part is arranged at the bottom of the base, and the vertical part is arranged at the side parts of the first base and the second base and is electrically connected with the first spring or the second spring.

In one embodiment, the front surface of the carrier is provided with two protrusions extending in the first direction, the two protrusions being disposed at the same height and located on both sides of the optical element mounting hole, respectively.

In one embodiment, the surfaces of the first and second base side portions facing the carrier are respectively provided with magnet mounting grooves in which the magnet groups are mounted.

The lens driving mechanism does not need a circuit board, realizes connection of the coil and an external circuit through the embedded metal sheet and the reed of the base, and has the advantages of simple structure, large driving force and stable operation.

Drawings

Fig. 1 is a schematic configuration diagram of a periscopic lens driving mechanism.

Fig. 2 is an exploded perspective view of a lens driving apparatus according to an embodiment of the present application.

Fig. 3 is a perspective view of the carrier of fig. 2.

Fig. 4 is a perspective view of the base in fig. 2.

Fig. 5 is a perspective view of the metal sheet embedded in the base in fig. 2.

Fig. 6 is a plan view of the lens driving apparatus of fig. 2.

Fig. 7 is a rear view of the lens driving apparatus of fig. 2.

Fig. 8 is a front view of the lens driving apparatus of fig. 2.

Detailed Description

The preferred 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 solution of the invention.

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.

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.

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 periscopic lens structure generally. The periscopic lens structure will be briefly described with reference to fig. 1.

Fig. 1 is a schematic configuration diagram of a periscopic lens driving mechanism. As shown in fig. 1, the periscopic lens driving mechanism generally includes two parts, i.e., a periscopic part 100 and a prism part 200. In which a prism section 200 is provided at the front end of the periscopic section 100 and an imaging chip 300 is provided at the rear end of the periscopic section 100. The light is reflected by the prism portion 200 into the periscope portion 100, the periscope portion 100 performs an AF function, i.e., is responsible for performing optical zooming, and the prism portion performs an OIS function, i.e., is responsible for optical anti-shake. The embodiments referred to below are described primarily with respect to periscope portion 100. The periscopic part 100 is also referred to as a periscopic lens driving apparatus or a lens driving apparatus in the present invention, and the lens driving apparatus 100 in one embodiment of the present application is described below with reference to the drawings.

Fig. 2 is an exploded perspective view of the lens driving device 100 according to an embodiment of the present application. As shown in fig. 1, the lens driving apparatus 100 includes a housing 10, a holder 20, a carrier 30, a first spring 41, a second spring 42, a magnet assembly 50, a base 60, a base embedded metal sheet 70 disposed in the base 60, and a coil assembly 80 disposed on the carrier 30. The magnet set 50 is disposed on the base 60 and correspondingly cooperates with the coil set 80 to drive the carrier 30 to move along the optical axis, the first spring 41 movably connects the base 60 with the front surface of the carrier 30, the second spring 42 movably connects the base 60 with the rear surface of the carrier 30, and the support 30 is disposed on the base 60 and supports the carrier 30. It should be noted that terms like "front surface" and "back surface" are used herein to distinguish the surfaces, and do not limit the scope of protection, for example, terms like "front surface" and "back surface" may be interchanged when the arrangement orientation is different, for example, "front surface" may become back surface, and "back surface" may also become front surface.

The components of the present embodiment and their mating relationship will be described in detail below with reference to fig. 3-8.

Fig. 3 is a perspective view of the carrier 30 in fig. 2. As shown in fig. 3, the optical axis direction is defined as a first direction, and the carrier 30 forms an optical element mounting hole 31 in the first direction, the optical element mounting hole 31 being used for mounting an optical element such as a lens. A first carrier side 32, a second carrier side 33, a third carrier side 34, and a fourth carrier side 35 are formed around the optical element mounting hole 31, and a carrier front surface 36 and a carrier rear surface 37 are formed at both ends of the optical element mounting hole 31. With reference to the direction shown in fig. 3, the first carrier side portion 32 and the second carrier side portion 33 are located on the left and right sides of the optical element mounting hole 31, the third carrier side portion 34 and the fourth carrier side portion 35 are located on the upper and lower sides of the optical element mounting hole 31, the front surface 36 is located in front of the drawing, and the rear surface 37 is located behind the drawing. In this example, the coil assembly 80 includes a first coil 81 and a second coil 82, the first coil 81 and the second coil 82 are respectively disposed on the first carrier side 32 and the second carrier side 33 opposite to each other, and cooperate with the magnet assembly 50 disposed on the base 60 to drive the carrier 30 to move in the first direction.

With continued reference to fig. 3, the front surface 35 is provided with two protrusions 351 protruding outward in the first direction, the two protrusions 351 being disposed at the same height and symmetrically distributed on both sides of the optical element mounting hole 31, it can also be understood that the two protrusions 351 are integrally formed extending outward in the first direction from the front surfaces 36 of the first and second

carrier side portions

32 and 33. The third carrier side 34 is provided with two winding posts 341 near the rear surface 37, and the ends of the coil group 80 are wound on the winding posts 341.

Fig. 4 is a perspective view of the base 60 in fig. 2. As shown in fig. 4, the base 60 includes a base bottom 61 and first and

second base sides

62 and 63, the first and

second base sides

62 and 63 integrally extend upward from both ends of the base bottom 61, and a space for mounting the carrier 30 is defined between the first and

second base sides

62 and 63. In the present embodiment, the base bottom is constituted by a bottom plate, the first base side portion and the second base side portion are constituted by two side plates, the carrier 30 is mounted on the base bottom 61 in the first direction, that is, the optical element mounting holes 31 are arranged in parallel to the base bottom 61, and the first base side portion 62 and the second base side portion 63 are arranged opposite to the first carrier side portion 32 and the second carrier side portion 33, respectively. The inner surfaces of the first and second

base side portions

62 and 63, i.e., the surfaces facing the carrier 30, are provided with magnet mounting grooves 64 for mounting the magnet groups 50.

Fig. 5 is a perspective view of the metal sheet embedded in the base in fig. 2. As shown in fig. 5, the base insert metal sheet 70 includes a horizontal portion 71 and a vertical portion 72, the horizontal portion 71 is disposed in the base bottom portion 61 of the base 60, and the vertical portion 72 is disposed in the first base side portion 62 and the second base side portion 63 of the base 60. Specifically, the base insert metal sheet 70 includes a first portion 73 and a second portion 74 independent from each other, and the first portion 73 and the second portion 74 are electrically connected to a first coil 81 and a second coil 82 of a coil group 80, respectively, and each include a horizontal portion 71 and a vertical portion 72 formed integrally. The ends of the horizontal portions of the first portion 73 and the second portion 74 are disposed outside the base 60 to be connected with an external circuit, the vertical portions 72 of the first portion 73 and the second portion 74 are electrically connected with the first spring 41 or the second spring 42, and the first spring 41 or the second spring 42 is electrically connected with the coil assembly 80 through the winding post, so as to be electrically connected with the coil assembly 80 on the carrier 30 through the base embedded metal sheet 70 and the first spring 41 or the second spring 42.

It should be noted that the winding post 34 may be electrically connected to any one of the first spring plate 41 and the second spring plate 42, or may be electrically connected to both the first spring plate 41 and the second spring plate 42, which is not limited herein and may be specifically configured as required.

Fig. 6 is a plan view of the lens driving device 100 of fig. 2, fig. 7 is a rear view of the lens driving device 100 of fig. 2, and fig. 8 is a front view of the lens driving device 100 of fig. 2. Referring to fig. 6 to 8, the carrier 30 is mounted on the base 60, specifically, the fourth carrier side 35 of the carrier 30 faces the base bottom 61 of the base 60, the first carrier side 32 and the second carrier side 33 of the carrier 30 are respectively disposed toward the first base side 62 and the second base side 63 of the base 60, the magnet set 50 includes a first magnet 51 and a second magnet 52 and is respectively mounted in the magnet mounting grooves 64 on the inner surfaces of the first base side 62 and the second base side 63, the coil set 80 includes a first coil 81 and a second coil 82, the first coil 81 and the second coil 82 are respectively mounted on the first side 32 and the second side 33 of the carrier 30 and are respectively matched with the first magnet 51 and the second magnet 52, so that the carrier 30 is driven to move in the first direction when the first coil 81 and the second coil 82 are energized, and the optical zoom function is realized. Wherein the ends of the first and

second coils

81 and 82 are wound on the bobbin 341.

The first spring 41 includes a first base connecting portion 411 and a first carrier connecting portion 412, the first base connecting portion 411 is fixedly connected to the front surface of the side plate 62 of the base 60, the first carrier connecting portion 412 is fixedly connected to the rear surface 37 of the carrier 30, and the first base connecting portion 411 and the first carrier connecting portion 412 are connected by a first elastic strip 413, so that the front surface of the carrier 30 is movably connected to the front surfaces of the first base side portion 62 and the second base side portion 63 of the base 60. The second spring 42 also includes a second base coupling portion 421 and a second carrier coupling portion 422, the second base coupling portion 421 is mounted on the rear surfaces of the first base side portion 62 and the second base side portion 63 of the base 60, the second carrier coupling portion 422 is mounted on the rear surface 35 of the carrier 30, and the second base coupling portion 421 and the second carrier coupling portion 422 are coupled by a second elastic strip 423, so that the rear surfaces of the first base side portion 62 and the second base side portion 63 and the rear surface of the carrier 30 are movably coupled by the second spring 42.

The base insert metal sheet 70 is disposed in the base 60, and specifically, the horizontal portion 71 of the base insert metal sheet 70 is disposed in the base bottom portion 61, the vertical portion 72 of the first portion 73 of the base insert metal sheet 70 is disposed in the base first side portion 62 and electrically connected to the bobbin 341, and the vertical portion 72 of the second portion 74 of the base insert metal sheet 70 is disposed in the base second side portion 63 and electrically connected to the bobbin 341, thereby electrically connecting the external circuit to the first coil 321 and the second coil 322 through the insert metal sheet 70 and at least one of the first reed 41 and the second reed 42. The stand 20 is disposed on the bottom plate 61 of the base 60 and engaged with the bottom of the carrier 30, thereby supporting the carrier 30.

In operation, an external circuit is connected through the embedded metal sheet 70, and then current is transferred to the first coil and the second coil through at least one of the first spring and the second spring, so that the carrier 30 is driven to move in the first direction through electromagnetic induction, thereby implementing an optical zoom function.

It should be noted that, although two sets of coils and two sets of magnets are provided in the present embodiment, in other embodiments, only one set of coils and one set of magnets may be provided, for example, a coil is provided only on the first carrier side portion 32 or the second carrier side portion 33 of the carrier 30, and a guide rail is provided on the first carrier side portion 31 or the second carrier side portion 32 where no coil is provided, and correspondingly, a magnet is provided only on the base first side portion or the base second side portion of the base 60 corresponding to the first carrier side portion or the second carrier side portion where the coil is provided, and a guide groove that engages with the guide rail is provided on one of the base first side portion or the base second side portion where no magnet is provided, thereby achieving the movement of the drive carrier in the optical axis direction.

In another embodiment, three sets of coils and three sets of magnets may be provided, wherein two sets of coils are mounted on the first carrier side portion and the second carrier side portion, and the third set of coils is mounted on the fourth carrier side portion, and similarly, in addition to providing one set of magnets on each of the base first side portion or the base second side portion of the base, a set of magnets is provided on the upper surface of the base bottom portion to cooperate with the coils on the fourth carrier side portion of the carrier, so as to obtain a larger driving force to drive the carrier.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. A lens driving device is characterized in that the lens driving device comprises a carrier, a first reed, a second reed, a base, a magnet group and a coil group,

2. A lens driving device according to claim 1, wherein a base embedded metal piece is provided in the base, the base embedded metal piece is electrically connected to at least one of the first spring plate and the second spring plate, and the first spring plate or the second spring plate electrically connected to the base embedded metal piece is electrically connected to the coil block.

3. The lens driving device according to claim 1, wherein the coil group includes a first coil and a second coil, the first coil and the second coil being disposed on the first carrier side portion and the second carrier side portion, respectively, and the magnet group includes a first magnet and a second magnet, the first magnet and the second magnet being disposed on surfaces of the first base side portion and the second base side portion facing the carrier, respectively, and being engaged with the first coil and the second coil, respectively.

4. The lens driving apparatus as claimed in claim 1, further comprising a stand provided at a bottom of the base and supporting the carrier.

5. A lens driving device as claimed in claim 4, wherein the holder has an elongated body, the bottom of the carrier is provided with a groove for engaging with the holder, and the holder is movably mounted on the bottom of the base and disposed in the groove.

6. The lens driving apparatus according to claim 1, further comprising a housing which is engaged with the base and which packages the carrier, the first spring, the second spring, the base, the magnet group, and the coil group.

7. The lens driving device according to claim 1, wherein the carrier is provided with a winding post, the coil group is electrically connected to the winding post, and at least one of the first spring and the second spring is electrically connected to the winding post.

8. The lens driving device according to claim 1, wherein the base embedded metal sheet includes a horizontal portion provided at the base bottom and a vertical portion provided at the first and second base side portions and electrically connected to the first or second spring.

9. A lens driving apparatus according to claim 1, wherein the front surface of the carrier is provided with two projecting portions extending in the first direction, the two projecting portions being provided at the same height and located on both sides of the optical element mounting hole, respectively.

10. The lens driving device according to claim 1, wherein surfaces of the first chassis side portion and the second chassis side portion facing the carrier are respectively provided with magnet mounting grooves in which the magnet groups are mounted.