CN111856691A

CN111856691A - Optical element driving device

Info

Publication number: CN111856691A
Application number: CN202010897898.2A
Authority: CN
Inventors: 汪仁德; 林聪�; 彭坤; 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: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-10-30

Abstract

The invention discloses an optical element driving device which comprises a shell, a carrier, an upper reed, a lower reed, a magnet group and a base. The carrier is used for mounting a lens and is provided with a first coil and a second coil, the magnet group is mounted on the inner wall of the shell and is correspondingly matched with the first coil and the second coil on the carrier, the base comprises a bottom plate and a protruding part extending from the bottom plate to the top of the shell, the upper reed movably connects the upper surface of the carrier and the end surface of the protruding part of the base, the lower reed movably connects the lower surface of the carrier and the bottom plate of the base, the base is further provided with a base embedded metal sheet, and the base embedded metal sheet connects the first coil and the second coil with an external circuit. The optical element driving device has the beneficial technical effects of simple structure, low cost, high reliability and the like.

Description

Optical element driving device

Technical Field

The invention relates to the technical field of optical imaging equipment, in particular to an optical element driving device.

Background

Along with smart mobile phone's a large amount of popularizations, cell-phone camera's range of application is bigger and bigger, however, cell-phone camera's sensor is mostly laid in the module outside the motor at present, side FPC adopts flexible circuit board, produce perk scheduling problem, the sensor detects unstably, side FPC adopts flexible circuit board simultaneously, the installation unevenness can influence actual motion stroke, the vertical direction motion part of middle carrier, in the coil on the carrier is retransmitted to last reed through the power transmission of suspension wire with bottom FPC, when the motor receives the impact or after the operation of permanent time, suspension wire reliability step-down, the easy problem of appearing fracture etc. leads to whole motor to become invalid. In addition, all be equipped with the circuit board in the base usually, the circuit board includes a lot of layers usually, and external circuit passes through circuit board and suspension wire etc. with the coil of focusing and realizes being connected, and the structure is complicated, and the circuit is not succinct enough, and the reliability receives certain influence.

Disclosure of Invention

It is an object of the present invention to provide an optical element driving device to solve the above-mentioned problems of the prior art.

In order to solve the above-mentioned problems, according to an aspect of the present invention, there is provided an optical element driving device including a housing, a carrier, an upper reed, a lower reed, a magnet group, and a mount,

the carrier is used for mounting a lens and is provided with a first coil and a second coil, the magnet group is mounted on the inner wall of the shell and is correspondingly matched with the first coil and the second coil on the carrier, the base comprises a bottom plate and a protruding part extending from the bottom plate to the top of the shell, the upper reed movably connects the upper surface of the carrier and the end surface of the protruding part of the base, the lower reed movably connects the lower surface of the carrier and the bottom plate of the base,

the base still is equipped with the embedded sheetmetal of base, the embedded sheetmetal of base will first coil and second coil and external circuit are connected, wherein first coil with magnet group cooperation drive the carrier is followed the motion of optical axis direction and is realized zooming, and the second coil with magnet group cooperation drive the carrier is moved on the plane of perpendicular to optical axis and is realized optics anti-shake.

In one embodiment, the first coil is disposed around the entire periphery of the upper portion of the carrier.

In one embodiment, the carrier comprises a side and a corner, the second coil is arranged at the side of the corner, and two second coils located diagonally are electrically connected.

In one embodiment, the two second coils located on opposite corners are made of the same wire.

In one embodiment, the base embedded metal sheet is provided with a protruding part, the protruding part of the base comprises a first protruding part and a second protruding part, the protruding part is matched with the first protruding part of the base and is arranged in the first protruding part, and the top of the protruding part is electrically connected with the upper spring sheet.

In one embodiment, the protrusion has a top portion with a gradually decreasing width, the first protrusion of the base has a notch, and the top portion of the protrusion is disposed within the notch.

In one embodiment, a first tip having a gradually decreasing area is formed in the notch, and a second tip having a gradually decreasing area is also formed at the top of the protrusion, and the second tip is engaged with the first tip and electrically connected to the upper spring through the second tip.

In one embodiment, the base embedded metal sheet is further provided with lower spring connecting parts at positions arranged at four corners of the base so as to electrically connect the base embedded metal sheet with the lower springs.

In one embodiment, the end face of the protruding portion of the base is provided with a base damping rubber groove, and the carrier is also provided with a carrier damping rubber groove, wherein the base damping rubber groove is matched with the carrier damping rubber groove to contain damping rubber.

In one embodiment, the upper spring comprises an upper spring carrier connecting part and an upper spring base connecting part, and the upper spring carrier connecting part and the upper spring base connecting part are connected after being bent twice through a first elastic piece.

In one embodiment, the lower spring comprises a lower spring carrier connecting part and a lower spring base connecting part, and the lower spring carrier connecting part and the lower spring base connecting part are connected after being bent twice through a third elastic piece.

In one embodiment, the first coil is arranged above the second coil.

In one embodiment, the carrier comprises four sides and four corners, each corner is provided with one of the second coils, the second coils located at opposite corners are electrically connected, and a free end of each second coil is electrically connected with the second coil connecting part of the metal sheet embedded in the base.

In one embodiment, the first and second projections of the base extend the height of the carrier toward the top of the housing.

According to another aspect of the present invention, there is also provided a carrier of a lens driving pair apparatus, the carrier having a lower surface facing a base and an upper surface opposite to the lower surface, the carrier being provided inside with a carrier central opening extending from the upper surface up to the lower surface for mounting a lens, the carrier being formed on an outside thereof with side surfaces and corner portions, a first coil being provided around an outer periphery of the carrier, and a second coil being provided at the corner portion of the carrier, the first coil cooperating with a magnet group of an optical element driving apparatus to control movement of the carrier in an optical axis direction, the second coil cooperating with the magnet group of the optical element driving apparatus to control movement of the carrier in a plane perpendicular to the optical axis direction.

In one embodiment, the outer portion of the carrier forms four of the corners and four of the sides, each corner being provided with one of the second coils.

In one embodiment, each side surface is provided with a first coil limiting part.

In one embodiment, each side surface is provided with one first coil limiting part.

In one embodiment, the first coil is proximate to the upper surface and the second coil is proximate to the lower surface.

In one embodiment, the upper surface of the carrier is provided with upper spring fixing columns for fixedly connecting with upper spring inner rings of the optical element driving device.

In one embodiment, the upper surface is further provided with a carrier damping glue groove, and the carrier damping glue installation groove is matched with the base damping glue groove on the base to install damping glue.

In one embodiment, a winding post is further provided on a side surface of the carrier, and an end portion of the second coil is wound on the winding post.

In one embodiment, a carrier damping adhesive mounting groove is provided on an upper surface corresponding to each side surface.

In one embodiment, the adjacent parts of the two damping rubber mounting grooves are provided with electrical outlets, and the current is electrically connected with the first coil through the electrical outlets.

According to another aspect of the present invention, there is provided a base for a lens driving device, the lens driving device including a housing, a carrier, an upper spring plate, a lower spring plate, and the base, the upper spring plate and the lower spring plate movably connecting the base and the carrier, the base having a bottom plate and a protrusion protruding from the bottom plate toward a top surface of the housing, the bottom plate having a lens mounting hole at a middle portion thereof, the protrusion having an upper spring plate fixing portion at a tip thereof to be fixedly connected to an outer ring of the upper spring plate.

In one embodiment, the protruding parts comprise two opposite first protruding parts and two opposite second protruding parts, the top ends of the first protruding parts are provided with notches, and end parts with areas gradually decreasing from bottom to top are arranged in the notches.

In one embodiment, the upper surface of the protruding part is provided with a base upper spring fixing column to be fixedly connected with the inner ring of the upper spring.

In one embodiment, the upper surface of the protruding part is provided with two base upper spring fixing columns, and a groove is formed between the two base upper spring fixing columns.

In one embodiment, the upper surface of the protruding portion is further provided with a base damping glue installation groove, and the base damping glue installation groove is arranged next to the reed fixing column on the base.

In one embodiment, the upper surface of the first protruding part is provided with a base damping glue installation groove, an upper spring fixing column, a groove, another upper spring fixing column and the notch in sequence.

In one embodiment, the upper surface of the second protruding part is provided with a base damping glue installation groove, an upper spring fixing column, a groove and another upper spring fixing column in sequence, wherein the groove is located between the two upper spring fixing columns.

In one embodiment, four corners of the bottom plate are further provided with base lower spring fixing columns so as to be fixedly connected with an outer ring of the lower spring.

In one embodiment, the base is further provided with a base embedded metal sheet formed with a protruding portion integrally protruding toward the top surface of the housing, the protruding portion being engaged with the first protruding portion of the base and arranged inside the first protruding portion.

In one embodiment, the upper portion of the protrusion has a top portion of gradually decreasing width, the top portion cooperating with the notch of the first protrusion.

In one embodiment, the notch of the first protrusion forms a first tip with a gradually decreasing area, and the top of the protrusion also has a second tip with a gradually decreasing area, and the second tip is matched with the first tip so as to be electrically connected with the upper spring through the second tip of the embedded metal sheet.

In one embodiment, the base embedded metal sheet is further provided with lower spring connecting parts at positions arranged at four corners of the base, so that the base embedded metal sheet is electrically connected with the lower springs.

According to another aspect of the present invention, there is also provided a chassis-embedded metal sheet of a lens driving device including a housing, a carrier, an upper spring, a lower spring, and the chassis, the chassis-embedded metal sheet including an external connection terminal and being formed with a protruding portion protruding integrally toward the housing, the protruding portion being engaged with a first protruding portion of the chassis and being disposed inside the first protruding portion, the protruding portion extending upward from the chassis by the height of the carrier and being electrically connected to the upper spring disposed on the upper surface of the carrier.

In one embodiment, the base insert metal sheet is formed of two separate parts, each part being formed with one of the projections.

In one embodiment, the two parts of the base embedded metal sheet are the same in structure, and a plurality of external terminals are formed on each part.

In one embodiment, three external terminals are formed on each portion of the base embedded metal sheet.

In one embodiment, the upper portion of the protrusion has a top portion with a gradually decreasing width.

In one embodiment, the top of the protrusion has a second tip of decreasing area that mates with the first tip within the base notch.

In one embodiment, the base embedded metal sheet is arranged at the positions of four corners of the base and is further provided with lower spring plate connecting parts so as to electrically connect the base embedded metal sheet with the lower spring plates.

In one embodiment, the metal sheet embedded in the base is further provided with a plurality of material belts.

In one embodiment, the end of the protrusion extends up the height of the carrier so that the end face of the protrusion is flush with the upper surface of the carrier.

In one embodiment, one end of the two external terminals located outside is connected to an external circuit, and the other end forms one of the lower spring connecting parts.

According to another aspect of the present invention, there is provided an upper spring plate of an optical element driving device, the upper spring plate includes a first portion and a second portion independent from each other, the first portion and the second portion surround to form an annular structure, an inner ring of the annular structure has four upper spring plate carrier connecting portions and two upper spring plate base connecting portions, the two upper spring plate base connecting portions are respectively connected to two upper spring plate carrier connecting portions through first elastic members, the second upper spring plate base connecting portion is connected to two other upper spring plate carrier connecting portions through second elastic members and is disposed outside the inner ring, and the first elastic members and the second elastic members are bent only twice to form an "S" shaped needle portion.

In one embodiment, the second upper spring seat connecting portion is connected to a free end of the second elastic member and is configured to be fixed to an end surface of the first protrusion of the seat, and the first upper spring seat connecting portion is connected to a free end of the first elastic member and is fixed to an end surface of the second protrusion of the seat.

In one embodiment, the two ends of the first and second parts form an upper spring carrier connection part and a first upper spring base connection part respectively, the middle parts of the first and second parts form another upper spring carrier connection part, and the upper spring carrier connection parts of the end parts and the upper spring carrier connection parts of the middle parts are connected through a connecting strip.

In one embodiment, the upper spring carrier connection portion of the end portion and the second upper spring seat connection portion are connected by the second elastic member.

In one embodiment, the first part and the second part are each provided with two upper reed carrier connections and one first upper reed base connection and one second upper reed base connection, and the second upper reed base connections are arranged adjacent to the upper reed carrier connections of the middle part.

In one embodiment, the upper reed carrier connection of the end is provided with a coil connection which mates with an electrical outlet on the carrier.

In one embodiment, the first upper spring seat connecting portion and the second upper spring seat connecting portion are each provided with a plurality of fixing holes to be matched with the spring fixing columns on the end surfaces of the first protruding portion and the second protruding portion of the base.

In one embodiment, the second upper reed base connecting portion is further provided with an embedded metal sheet connecting portion, and the embedded metal sheet connecting portion is matched with the tip of the protruding portion of the base embedded metal sheet so as to be electrically connected with the base embedded metal sheet.

In one embodiment, the embedded metal sheet connecting part is a connecting hole, and the tip of the protruding part of the embedded metal sheet of the base extends into the connecting hole.

In one embodiment, the connection hole is located at one end of the second upper reed base connecting portion, and a material strip is disposed at the other end of the second upper reed base connecting portion.

According to another aspect of the present invention, there is also provided a lower spring of an optical element driving device, the lower spring is composed of a first part, a second part, a third part and a fourth part which are independent of each other, the first part, the second part, the third part and the fourth part include a lower spring carrier connecting part and a lower spring base connecting part, the lower spring carrier connecting part and the lower spring base connecting part are connected by a third elastic member, one end of the third elastic member is connected to the lower spring carrier connecting part, and the other end of the third elastic member is connected to the lower spring base connecting part.

In one embodiment, the first, second, third and fourth sections are arranged in sequence and form a rectangular structure, the lower spring carrier connection and the third spring form an inner ring of the lower spring, and the lower spring mount connection is located at a corner and is arranged outside the inner ring.

In one embodiment, the lower spring carrier connecting part is provided with a lower spring carrier connecting hole to be fixedly connected with a spring connecting column on the lower surface of the carrier.

In one embodiment, the outer side of the lower spring carrier connecting part is further provided with a second coil connecting part, and the second coil connecting part is matched with the winding post on the side surface of the carrier so as to be electrically connected with a second coil on the carrier.

In one embodiment, the second coil connecting part is disposed outside the lower spring carrier connecting hole.

In one embodiment, the lower spring base connecting part is provided with a lower spring base embedded metal sheet connecting part which is matched with the lower spring connecting parts at four corners of the base embedded metal sheet so as to electrically connect the base embedded metal sheet with the lower spring.

In one embodiment, the lower spring plate base connecting portion is provided with two lower spring plate base connecting holes, and the lower spring plate base embedded metal sheet connecting portion is arranged between the two lower spring plate base connecting holes.

In one embodiment, the lower spring carrier connecting parts of the first part, the second part, the third part and the fourth part of the lower spring and the lower spring base connecting part on the same part are connected through a third elastic part, and the third elastic part forms an S-shaped bent part through twice bending.

In one embodiment, the "S" shaped bend is disposed inside and proximate to the lower spring mount connection.

In one embodiment, the lower reed carrier connector of the first section is disposed adjacent to the lower reed base connector of the second section, the lower reed carrier connector of the second section is disposed adjacent to the lower reed base connector of the third section, the lower reed carrier connector of the third section is disposed adjacent to the lower reed base connector of the fourth section, and the lower reed carrier connector of the fourth section is disposed adjacent to the lower reed base connector of the first section.

The optical element driving device provided by the invention does not need to be provided with a circuit board, circuit connection is directly carried out through the metal sheet embedded in the base, the structure is reliable, the strength is high, meanwhile, the base is provided with the protruding part, a frame is not needed, the optical anti-shake and zooming functions can be realized by installing the magnet group on the inner wall of the frame, and the optical element driving device has the excellent technical effects of few parts and simplified structure. In addition, the whole upper spring plate and the whole lower spring plate are light in weight, the processing difficulty and the cost are reduced, and meanwhile, the requirements on strength and elastic deformation can be well met. Therefore, the invention has the beneficial technical effects of simple structure, low cost, high reliability and the like.

Drawings

Fig. 1 is an exploded perspective view of an optical element driving apparatus according to an embodiment of the present invention;

FIG. 2A is a perspective view of a carrier according to one embodiment of the present invention;

FIG. 2B is a front view of a carrier according to one embodiment of the present invention;

FIG. 3A is a perspective view of a base of one embodiment of the present invention;

FIG. 3B is a front view of the base of one embodiment of the present invention;

FIG. 4 is a perspective view of a metal sheet embedded in the base;

FIG. 5 is a top view of the base with the base insert metal sheet installed;

figure 6 is a perspective view of a top spring plate according to one embodiment of the present invention;

figure 7 is a front view of a lower spring leaf according to one embodiment of the present invention;

FIG. 8 is a top view of an optical element driving apparatus according to an embodiment of the present invention; and

fig. 9 is a sectional view of an optical element driving apparatus according to an embodiment of the present invention.

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 to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present 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 purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

An optical element driving apparatus according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 9.

Fig. 1 is an exploded perspective view of an optical element driving apparatus according to an embodiment of the present invention. As shown in fig. 1, an optical element driving apparatus 100 according to an embodiment of the present invention generally includes a housing 10, an upper spring 20, a carrier 30, a magnet group 40, a damping paste 50, a lower spring 60, a base 70, and a base embedded metal sheet 80. The magnet pack 40 is fixedly mounted inside the housing 10 and cooperates with the coils on the carrier 30. The base embedded metal sheet 80 is disposed inside the base 70, and the lower spring 60 is mounted on the base 70 and movably connects the base 70 with the surface of the carrier 30 facing the base. The upper spring plate 20 is disposed on the base 30 and movably connects the upper surface of the carrier 30 with the base 70. The carrier 20 of one embodiment of the present invention is described in detail below with reference to fig. 2.

Fig. 2A is a perspective view of a carrier 20 according to an embodiment of the present invention, fig. 2B is a front view of the carrier 20 according to an embodiment of the present invention, as shown in fig. 2A and 2B, the carrier 20 has a lower surface 211 facing the base and an upper surface 212 opposite to the lower surface, the carrier 20 is provided inside with a carrier central opening 21 extending from the upper surface 212 to the lower surface 211 for mounting a lens, the carrier 20 is formed outside with four side surfaces 22 and four corners 23, and each corner 23 is mounted with one second coil 231. Each side surface 22 is provided with a coil stopper 221 for stopping the first coil 24 and preventing the first coil 24 from moving toward the base. A first coil 24 is also provided around the outer circumference of the carrier 20, the first coil 24 being provided around the entire outer circumference of the carrier 20 and being arranged at a corner 23 and a side 22 of the carrier 20 close to the upper surface 212, i.e. the first coil 24, although being arranged around the outer circumference of the carrier 20, is adjacent to the upper surface 212, in other words, for each corner 23, the second coil 231 on the corner 23 is arranged below the first coil 24, i.e. the distance of the second coil 231 from the lower surface 211 of the carrier is smaller than the distance of the first coil 24 from the lower surface 221. For each side surface 22, the first coil-retaining portion 221 on the side surface 22 is disposed below the first coil 24, that is, the distance from the first coil-retaining portion 221 to the lower surface 211 is smaller than the distance from the first coil 24 to the lower surface 211.

The upper surface 212 is provided with a carrier upper reed fixing column 213 and a carrier damping rubber mounting groove 214, the carrier upper reed fixing column 213 is fixedly connected with the inner ring of the upper reed, and the carrier damping rubber mounting groove 214 is matched with a base damping rubber groove on the base to mount damping rubber. A carrier damping rubber mounting groove is provided on an upper surface corresponding to each side surface 22, and an electrical outlet 215 is provided at a portion adjacent to two of the damping rubber mounting grooves, through which electrical current is electrically connected to the first coil 24. In one embodiment, the side 22 of the carrier 20 is further provided with a winding post 25, and the end of the second coil 231 is wound on the winding post 25.

Fig. 3A is a perspective view of a base 70 according to an embodiment of the present invention, and fig. 3B is a front view of the base 70 according to an embodiment of the present invention. As shown in fig. 3A-3B, the base 70 has a bottom plate 71 and first and

second projections

72, 72 extending from the bottom plate 71 toward the housing. The middle of the bottom plate 71 is provided with a lens mounting hole 711, and the aperture of the lens mounting hole 711 matches with the aperture of the carrier central opening 21 of the carrier 20 to accommodate a lens. The height of the first and

second protrusions

72, 73 corresponds to the height of the carrier 20, that is, the upper surface of the carrier 20 is substantially flush with the end surfaces of the first and

second protrusions

72, 73 when the carrier 20 is mounted on the chassis 70.

Specifically, in the embodiment shown in fig. 3A-3B, the bottom plate 71 is rectangular in configuration and has four sides, two of which are provided with first tabs 72 and two of which are provided with second tabs 73. One end of the upper surface of the first protrusion 72 is provided with a notch 721, and the notch 721 is matched with a corresponding structure on the base embedded metal sheet 80, so as to guide the current of the base embedded metal sheet to the upper spring 30. The upper surface of the first protrusion 72 is further provided with a base upper spring fixing post 722 to be connected with the outer ring of the upper spring 30. Specifically, the upper surface of the first protrusion 72 is provided with two base upper spring fixing posts 722, and a groove 725 is formed between the two upper spring fixing posts 722. A base damping rubber mounting groove 723 is further formed at one side of the upper spring fixing post 722, that is, on the upper surface of the first protrusion 72, a base damping rubber mounting groove 723, one upper spring fixing post 722, the groove 725, another upper spring fixing post 722, and a notch 721 are sequentially formed. Two upper spring fixing posts 722 are positioned between the notch 721 and the base damping rubber groove 723, and the groove 725 is positioned between the two upper spring fixing posts 722.

The second projection 73 is similar in structure to the first projection 72, except that the second projection 73 is not provided with a notch. Specifically, the upper surface of the second protruding portion 73 is provided with a base upper spring fixing post 731 to be connected with the outer ring of the upper spring 30. Specifically, the upper surface of the first protrusion 72 is provided with two base upper spring fixing posts 722, and a groove 725 is formed between the two upper spring fixing posts 722. A base damping rubber mounting groove 723 is further formed at one side of the upper spring fixing post 722, that is, on the upper surface of the second protrusion 72, a base damping rubber mounting groove 723, one upper spring fixing post 722, a groove 725 and another upper spring fixing post 722 are sequentially formed, and the groove 725 is located between the two upper spring fixing posts 722. Four corners of the bottom plate 71 are also provided with base lower spring fixing posts 74 to connect with the outer ring of the lower spring. Specifically, in the present embodiment, two base lower spring fixing posts 74 are provided per corner portion.

Fig. 4 is a perspective view of the chassis embedded metal sheet 80, and fig. 5 is a plan view of the chassis with the chassis embedded metal sheet mounted thereon. As shown in fig. 4-5, the base insert metal sheet 80 is integrally formed of a first portion 81 and a second portion 82. Of course, it will be understood by those skilled in the art that the first portion 81 and the second portion 82 may be formed as a unitary structure or may be formed as separate structures as shown in FIG. 4. The base insert metal sheet is formed with a protrusion 83 integrally protruded toward the top surface of the housing, the protrusion 83 is engaged with the first protrusion 72 of the base 70 and is disposed inside the first protrusion 72, and the upper portion of the protrusion 83 has a top portion 831 having a gradually decreasing width, and the top portion 831 is engaged with the notch 721 of the first protrusion 72. Specifically, the first nib 724 having a gradually decreasing area is formed in the gap 721 of the first protrusion 72, the top 831 of the protrusion 83 also has a second nib 831 having a gradually decreasing area, and the second nib 831 of the protrusion 83 is engaged with the first nib 724 to be electrically connected to the upper spring blade through the second nib 831 embedded with the metal sheet.

The base insert metal sheet 80 is also provided with lower spring attachment portions 84 at positions arranged at the four corners of the base, thereby electrically connecting the base insert metal sheet 80 with the lower springs 60. The base embedded metal sheet 80 is also provided with a plurality of external terminals 85, and the base embedded metal sheet 80 is electrically connected with the outside through the plurality of external terminals 85, so that current is applied to the first coil and the second coil through the base embedded metal sheet 80.

Specifically, in the embodiment shown in fig. 4, the first portion 82 and the second portion 82 of the base insert metal sheet 80 are identical in structure and are each formed with one protrusion 83, so that a total of two protrusions 83 are formed on the base insert metal sheet 80, and the two protrusions 83 are engaged with the two first protrusions 72 on the base 70. The first portion 82 and the second portion 83 each form three external connection terminals 85, and the entire chassis embedded metal sheet 80 forms six external connection terminals 85. One end of the two external terminals located outside is connected to the outside, and the other end forms a lower spring attachment portion 84. The first portion 81 and the second portion 82 also define a plurality of strips of material 86, the strips of material 86 also serving to reinforce the structural strength of the chassis 70.

Fig. 6 is a perspective view of the upper spring plate 30 according to one embodiment of the present invention. As shown in fig. 6, the upper spring 30 integrally includes a first portion 31 and a second portion 32 which are independent from each other, the first portion 31 and the second portion 32 surround to form a substantially annular structure, the inner ring of the annular structure has four upper spring carrier connecting portions 311 and two first upper spring base connecting portions 312, the first upper spring base connecting portions 312 and one upper spring carrier connecting portion 311 are connected by a first elastic member 313, the other two upper spring carrier connecting portions 311 are connected by a second elastic member 314 and a second upper spring base connecting portion 315, the second upper spring base connecting portion 315 is connected to a free end of the second elastic member 314 and is configured to be fixed to an end surface of the first protruding portion 72 of the base 70, and the first upper spring base connecting portion 312 is connected to a free end of the first elastic member 313 and is fixed to an end surface of the second protruding portion 73 of the base 70.

Specifically, in the embodiment shown in fig. 6, the two ends of the first portion 31 form an upper spring carrier connecting portion 311 and a first upper spring base connecting portion 312, respectively, the approximate middle of the first portion 31 forms another upper spring carrier connecting portion 311, and the upper spring carrier connecting portions 311 at the end and the upper spring carrier connecting portions 311 at the middle are connected by a connecting strip 316. The upper spring carrier coupling portion 311 at the end portion is coupled to the second upper spring seat coupling portion 315 via the second elastic member 314. That is, the first portion 31 is provided with two upper reed carrier attachment portions 311 and one first upper reed base attachment portion 312 and one second upper reed base attachment portion 315, and the second upper reed base attachment portion 315 is disposed adjacent to the upper reed carrier attachment portion 311 located at the middle portion.

In the embodiment shown in fig. 6, the first elastic element 313 and the second elastic element 314 are bent only twice to form an "S" shaped curved needle portion, so that the weight of the whole upper spring leaf is reduced, the processing difficulty and cost are reduced, and the requirements of strength and elastic deformation can be well met.

Continuing to refer to fig. 6, the first upper reed base connecting portion 312 and the second upper reed base connecting portion 315 are respectively provided with two fixing holes to be matched with the reed fixing posts on the end surfaces of the first protruding portion and the second protruding portion of the base, the second upper reed base connecting portion 315 is further provided with an embedded metal sheet connecting portion 317, and the embedded metal sheet connecting portion 317 is matched with the tip end of the protruding portion 83 of the embedded metal sheet of the base, so as to be electrically connected with the embedded metal sheet of the base. In the present embodiment, the embedded metal sheet connecting portion 317 is a connecting hole, and the tip of the protruding portion 83 of the base embedded metal sheet 80 protrudes into the connecting hole 317. The connection hole 317 is located at one end of the second upper spring seat connection part 315. The other end of the second upper reed base connecting part 315 is provided with a material tape 318. The upper reed carrier connecting portion 311 located at the end portion is provided with a coil connecting portion 319, the coil connecting portion 319 is fitted with the electrical connection portion 215 on the carrier 20, and since both ends of the first coil 24 are connected to the electrical connection portions 215 on the opposite two side surfaces of the carrier 20, respectively, the base embedded metal sheet is electrically connected to the first coil 24 through the embedded metal sheet connecting portion 317 and the coil connecting portion 319 by the connection of the upper reed carrier connecting portion 311 located at the end portion and the electrical connection portion 215.

In the present embodiment, the first portion 31 and the second portion 32 of the upper spring 30 are centrosymmetric and have the same structure, so that the detailed descriptions of the portions are omitted. That is, the two extending portions 83 of the base embedded metal sheet 80 are respectively and correspondingly fitted to the first portion 31 and the second portion 32 of the upper spring 30, and are electrically connected to the two ends of the first coil 24 through the first portion 31 and the second portion 32 of the upper spring 30, and the two ends of the whole first coil are respectively connected to the electrical connection portions 215 on the two opposite sides of the carrier 20, so that the two extending portions 83 of the base embedded metal sheet 80 are respectively connected to the positive electrode and the negative electrode of the external circuit, and the current conduction in the whole first coil 24 can be realized.

Figure 7 is a front view of lower spring plate 60 according to one embodiment of the present invention. As shown in FIG. 7, lower spring 60 is generally comprised of a first section 61, a second section 62, a third section 63, and a fourth section 64 that are independent of each other, with the four first section 61, second section 62, third section 63, and fourth section 64 being identical in construction and arranged in end-to-end relationship, and the first section 61 will now be described. First section 61 integrally includes a lower reed carrier attachment 65 and a lower reed base attachment 66, lower reed carrier attachment 65 and lower reed base attachment 66 being connected by a third elastic member 67, one end of third elastic member 67 being connected to lower reed carrier attachment 65, and the other end of third elastic member 67 being connected to lower reed base attachment 66. When the first section 61, the second section 62, the third section 63, and the fourth section 64 of the lower spring 60 are arranged to form a rectangular ring shape, the four lower spring carrier attachment portions 65 and the third resilient member 67 form an inner ring of the lower spring 60, and the four lower spring base attachment portions 66 are located at four corners and outside the inner ring.

With continued reference to fig. 7, a lower spring carrier connection hole 651 is formed in the lower spring carrier connection portion 65 to be fixedly connected to the spring connection post on the lower surface of the carrier, a second coil connection portion 652 is further formed at the outer side of the lower spring carrier connection portion 65, and the second coil connection portion 652 is matched with the winding post 25 on the side surface of the carrier 20 to be electrically connected to the second coil 231 on the carrier 20. Lower reed base connecting portion 66 is provided with two lower reed base connecting holes 661, lower reed base embedded metal sheet connecting portion 662 is provided between the two lower reed base connecting holes 661, and lower reed base embedded metal sheet connecting portion 662 cooperates with lower reed connecting portions 84 of four corners of base embedded metal sheet 80 to electrically connect base embedded metal sheet 80 with lower reed 60.

In one embodiment, referring back to fig. 2A, the second diagonally-located coils 231 are preferably formed or in electrical communication by the same wire, and each coil has one end wound around the winding post 25 on the adjacent side and the other end electrically connected to the diagonally-located coil. Returning to fig. 6, the lower spring 60 is composed of a first part 61, a second part 62, a third part 63 and a fourth part 64 which are independent of each other, each of which has a lower spring carrier connecting part 65 and a lower spring base connecting part 66, each of the lower spring carrier connecting parts 65 is provided with a second coil connecting part 652, each of the lower spring base connecting parts 66 is provided with a lower spring base embedded metal piece connecting part 662, so that one end of the second coil 231 is connected to one of the second coil connecting parts 652 by each of the second coil connecting parts 652 being fitted to one of the winding posts 25, and then connected to the base embedded metal piece 80 by the lower spring base embedded metal piece connecting part 662 of the lower spring base connecting part 66 on the same part, thereby connecting the second coil 231 located on the diagonal line to the positive and negative poles of the external circuit by the base embedded metal piece 80, to form a current in the second coil 231 located on the diagonal line. The second coil 231 on one diagonal line is matched with the magnet group installed on the inner wall of the housing 10, the driving carrier 20 moves along one axis (for example, X-axis) in a plane line perpendicular to the optical axis, the second coil 231 on the other diagonal line is matched with the magnet group installed on the inner wall of the housing 10, and the driving carrier 20 moves along the other axis (for example, Y-axis) in a plane line perpendicular to the optical axis, so that the optical anti-shake function of the optical driving device can be realized through the matching of the second coil 231 and the magnet group.

It should be noted that the lower spring carrier connecting portion 65 of each part of the lower spring 60 and the lower spring base connecting portion 66 of the same part are connected by the third elastic member 67, and the third elastic member 67 is bent twice at one end close to the lower spring base connecting portion 66 to form an "S" shaped bend, so that the weight of the whole lower spring is reduced, the processing difficulty and cost are reduced, and the requirements of strength and elastic deformation can be well met.

It should be noted that since the first portion 61, the second portion 62, the third portion 63 and the fourth portion 64 of the lower spring 60 have the same structure, they will not be described in detail. When installed, lower reed carrier connection 65 of first section 61 is disposed adjacent to lower reed base connection 66 of second section 62, lower reed carrier connection 65 of second section 62 is disposed adjacent to lower reed base connection 66 of third section 63, lower reed carrier connection 65 of third section 63 is disposed adjacent to lower reed base connection 66 of fourth section 64, and lower reed carrier connection 65 of fourth section 64 is disposed adjacent to lower reed base connection 66 of first section 61. The lower reed carrier attachment 65 is attached to the lower surface of the carrier 20, the lower reed base attachment 66 is attached to the base 70, and since the lower reed carrier attachment 65 and the lower reed base attachment 66 are connected by the third elastic member 67, the carrier 20 can perform relative movement with respect to the base 70 in the optical axis direction and in a plane perpendicular to the optical axis, when the carrier 20 moves with respect to the base 70 in the optical axis direction, a zoom function is implemented, and when the carrier 20 moves in a plane perpendicular to the optical axis, an optical anti-shake function is implemented.

Fig. 8 is a plan view of the optical element driving device 100 according to the embodiment of the present invention, and fig. 9 is a sectional view of the optical element driving device 100 according to the embodiment of the present invention. As shown in fig. 8 to 9 in conjunction with fig. 1 to 7, the magnet assembly 40 of the optical element driving device 100 as a whole is fixed to the inner wall of the housing 10, the first coil 24 is disposed around the outer periphery of the upper portion of the carrier 20, the second coils 231 are mounted to the four corners of the carrier 20, the first coil 24 and the second coils 231 are respectively engaged with the magnet posts 40 mounted to the inner wall of the housing 10, the upper spring 30 movably connects the upper surface of the carrier 20 to the end surfaces of the first protrusion 72 and the second protrusion 73 of the base 70, the lower spring 60 movably connects the lower surface of the carrier 20 to the bottom plate 71 of the base 70, the base insert metal sheet 80 is disposed inside the base 70 and connects the first coil 24 and the second coil 231 to the external circuit through the upper spring 30 and the lower spring 60, respectively. The housing 10 and the base 70 cooperate to confine and protect the components within the space defined by the housing 10 and the base 70. In operation, the optical anti-shake function of the optical element driving device can be achieved by adjusting the internal current of the second coil 231, and the zoom function of the optical element driving device can be achieved by adjusting the internal current of the first coil 24.

It should be noted that the optical element driving device of the present invention does not need to be provided with a circuit board, and directly performs circuit connection through the metal sheet embedded in the base, so that the structure is reliable, the strength is high, and meanwhile, the base is provided with the protruding portion, so that the frame is not needed, and the optical anti-shake and zooming functions can be realized by installing the magnet group on the inner wall of the frame, and the optical element driving device has the excellent technical effects of few parts and simplified structure. In addition, the whole upper spring plate and the whole lower spring plate are light in weight, the processing difficulty and the cost are reduced, and meanwhile, the requirements on strength and elastic deformation can be well met.

In summary, the optical element driving device of the present invention has the advantages of simple structure, low cost, high reliability, and the like.

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

Claims

1. An optical element driving device, comprising a housing, a carrier, an upper reed, a lower reed, a magnet group, and a base,

2. An optical element driving device according to claim 1, wherein the first coil is provided around the entire periphery of the upper portion of the carrier.

3. An optical element driving device according to claim 2, wherein said carrier includes a side face and a corner portion, said second coil is provided on a side face of said corner portion, and two second coils located diagonally are electrically connected.

4. An optical element driving device according to claim 3, wherein the two second coils located on opposite corners are made of the same wire.

5. An optical element driving device according to claim 1, wherein the base embedded metal sheet is provided with a protruding portion, the protruding portion of the base includes a first protruding portion and a second protruding portion, the protruding portion is fitted with and provided in the first protruding portion of the base, and a top portion of the protruding portion is electrically connected to the upper spring.

6. An optical element driving device according to claim 5, wherein the protrusion has a top portion with a gradually decreasing width, the first protrusion of the base has a notch, and the top portion of the protrusion is arranged in the notch.

7. An optical element driving device according to claim 6, wherein a first tip end having a gradually decreasing area is formed in the notch, and a second tip end having a gradually decreasing area is also formed on the top of the protruding portion, and the second tip end is engaged with the first tip end and electrically connected to the upper spring through the second tip end.

8. An optical element driving device according to claim 7, wherein said base embedded metal sheet is further provided with lower spring attachment portions at positions arranged at four corners of the base to electrically connect the base embedded metal sheet with the lower springs.

9. An optical element driving device according to claim 1, wherein the end face of the protrusion of the base is provided with a base damping glue groove, and the carrier is also provided with a carrier damping glue groove, the base damping glue groove cooperating with the carrier damping glue groove to accommodate damping glue.

10. The optical element driving device as claimed in claim 1, wherein said upper spring comprises an upper spring carrier connecting portion and an upper spring base connecting portion, and said upper spring carrier connecting portion and said upper spring base connecting portion are connected by a first elastic member after being bent twice.

11. The optical element driving device as claimed in claim 1, wherein the lower spring comprises a lower spring carrier connecting portion and a lower spring base connecting portion, and the lower spring carrier connecting portion and the lower spring base connecting portion are connected after being bent twice by a third elastic member.

12. The optical element driving device according to claim 1, wherein the first coil is arranged above the second coil.

13. An optical element driving device according to claim 1, wherein said carrier includes four sides and four corners, each of said corners is provided with one of said second coils, said second coils located diagonally are electrically connected, and a free end of each of said second coils is electrically connected to said second coil connecting portion of said metal piece embedded in said base.

14. An optical element driving device according to claim 1, wherein the first and second projections of the base extend the height of the carrier towards the top of the housing.