KR20210028622A - Motor for actuating lens - Google Patents

Abstract

An embodiment may provide a lens driving motor, which includes: a mover including a first coil portion; a driving unit including a magnet portion having an inner surface opposite to an outer surface of the first coil portion to move the mover, a housing in which the magnet portion is disposed, and a second portion disposed to face a lower surface of the magnet portion to move the housing; a board including a board part electrically connected to the second coil part, a terminal part bent downward from a side surface of the board part, and a fixing portion extending from the terminal part on at least one side; a base supporting the mover and the driving unit, and having an extended part protruding corresponding to the fixing portion on a lower surface thereof; and a cover can fastened to the base to accommodate the mover and the driving unit.

Description

Lens driving motor{MOTOR FOR ACTUATING LENS}

An embodiment of the present invention relates to a lens driving motor having an improved structure.

As the spread of various portable terminals has become widespread and the wireless Internet service is commercialized, the demands of consumers related to portable terminals are also diversifying. Accordingly, various types of additional devices are installed in the portable terminals.

Among them, a typical camera module is a camera module that can capture a subject as a photo or video, store the image data, and then edit and transmit it as necessary.

Recently, the demand for small-sized camera modules is increasing for various multimedia fields such as notebook personal computers, camera phones, PDAs, smart phones, toys, etc., and also for image input devices such as information terminals of surveillance cameras and video tape recorders. .

The camera module needs to be connected to a substrate in order to efficiently supply power to an actuator for preventing camera shake, but the reliability of the substrate may be a problem.

(Patent Document 1) JP2013-024944 A

The embodiment may provide a lens driving motor with improved reliability by proposing a structure capable of firmly fixing a terminal portion.

An embodiment includes a mover including a first coil unit; In order to move the mover, a magnet part having an inner surface facing the outer surface of the first coil part, a housing in which the magnet part is disposed, and a second disposed so as to be opposed to a lower surface of the magnet part to move the housing A driving unit including a coil unit; A substrate including a substrate portion electrically connected to the second coil portion, a terminal portion formed by bending downward from a side of the substrate portion, and a fixing portion extending from the terminal portion at least one side thereof; A base supporting the mover and the driving part and having an extension part protruding corresponding to the fixing part on a lower side thereof; And a cover can that is fastened to the base to accommodate the mover and the driving unit.

On the other hand, the embodiment is a lens unit; A mover having the lens unit fixed and including a first coil unit; In order to move the mover, a magnet part having an inner surface facing the outer surface of the first coil part, a housing in which the magnet part is disposed, and a second disposed so as to be opposed to a lower surface of the magnet part to move the housing A driving unit including a coil unit; A substrate including a substrate portion electrically connected to the second coil portion, a terminal portion formed by bending downward from a side of the substrate portion, and a fixing portion extending from the terminal portion at least one side thereof; A base supporting the mover and the driving part and having an extension part protruding corresponding to the fixing part on a lower side thereof; And a cover can fastened to the base to accommodate the mover and the driving unit.

In addition, the terminal portion may be electrically connected to the substrate portion, and the fixing portion may be formed of a non-conductive material extending from the terminal portion.

In addition, at least one or more through holes may be formed in the fixing part.

In addition, the terminal portion may be formed to be equal to or longer than the height of the extension portion.

In addition, the base may have a seating groove in which the terminal portion is seated on a side surface, and the extension portion may be formed on a lower surface of the seating groove.

In addition, the extension may further include a concave groove through which the adhesive may be introduced into a side or a lower side in contact with the fixing unit.

In addition, the camera module may further include a printed circuit board disposed on a lower surface of the base and electrically connected to the terminal part.

In addition, a soldering point for electrically connecting to a terminal of the terminal unit may be formed on the printed circuit board.

In addition, an image sensor may be mounted on the printed circuit board.

According to an embodiment of the present invention, a lens driving motor or a camera module with improved reliability can be implemented by improving the structure of the terminal portion and the base.

1 is an exploded perspective view of a lens driving motor according to an embodiment of the present invention.
2 is a perspective view of a substrate according to an embodiment of the present invention.
3 is a perspective view of a base according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Unless otherwise defined, all terms in this specification are the same as the general meanings of terms understood by those skilled in the art, and if terms used in the present specification conflict with the general meanings of the terms, the definitions used herein will be followed.

However, the invention to be described below is only for describing an embodiment of the present invention, not for limiting the scope of the present invention, and reference numerals used identically throughout the specification denote the same elements.

Hereinafter, referring to the drawings, a detailed description of the lens driving motor of the embodiment is as follows.

1 is an exploded perspective view of a lens driving motor according to an exemplary embodiment of the present invention, FIG. 2 is a perspective view of a substrate according to an exemplary embodiment of the present invention, and FIG. 3 is a perspective view of a base according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the lens driving motor according to the embodiment may largely include a mover 200, a driving unit 300, and a cover can 100, and may further include an elastic unit 600.

The cover can 100 may be fastened to a base 350 to be described later to accommodate a mover 200, a driving unit 300, and an elastic unit 600, and may form the exterior of a lens driving motor.

As shown in FIGS. 1 and 3, the cover can 100 may be formed in a rectangular parallelepiped shape in which an opening is formed on an upper side and a lower side is open, but the shape of the cover can 100 is thus It is not limited.

In short, the shape of the cover can 100 may be a quadrangular shape or an octagonal shape when viewed from the top, and may be implemented in any other shape.

The cover can 100 may have an inner surface coupled to a base 350 to be described later, and may protect internal components from external impacts and at the same time have a function of preventing penetration of external contaminants.

In addition, the cover can 100 may also perform a function of protecting components of the camera module from external radio wave interference generated by a mobile phone or the like. Accordingly, the cover can 100 may be formed of a metal material such as iron or aluminum, and may be plated with a metal such as nickel to prevent corrosion. In addition, the cover can 100 may be formed of a magnetic material and may function as a yoke.

The cover can 100 may be implemented as a yoke portion itself to be described later, or may be fixed by molding the yoke portion inside. In an embodiment, an inner yoke (not shown) that is bent toward the inside of the cover can 100 may be formed inside the upper side of the cover can 100. This inner yoke may be located in the concave inlet 213 formed in the bobbin 210 to be described later.

In this case, the inner yoke may be disposed at a corner around the upper side opening of the yoke or may be disposed on the side, and the concave inlet 213 of the bobbin 210 may be formed at a corresponding position.

In addition, the cover can 100 may have a seating portion 110 in which a portion corresponding to the seating groove 354 of one surface fastened to the base 350 to be described later extends at a predetermined interval downward, and such seating When the cover can 100 is inserted into the base 350 due to the portion 110, the terminal portion 342 of the substrate 340 to be described later may be naturally bent. Meanwhile, the terminal portion 342 of the substrate 340 to be described later may be bent in advance and disposed between the mounting groove 354 of the base 350 and the mounting portion 110 of the cover can 100. The seating groove 354 may be a groove.

The mover 200 may be moved by receiving a lens or a lens unit (not shown) to be described later. The mover 200 may include a bobbin 210 and a first coil unit 220.

The bobbin 210 may accommodate a lens unit (not shown) inside. Specifically, the bobbin 210 is coupled with a lens unit to be described later to fix the lens unit, and the coupling method of the lens unit and the bobbin 210 is fastened by forming a screw thread on the inner circumferential surface of the bobbin 210 and the outer circumferential surface of the lens unit, respectively. A threaded connection method that can be used may be used, but it may also be combined by a screwless connection method using an adhesive. Of course, even in the threaded connection method, it is possible to achieve a more robust mounting with each other by using an adhesive after screwing in the threaded connection.

In addition, a guide part 211 for guiding the winding or mounting of the first coil part 220 to be described later may be formed on the outer circumferential surface of the bobbin 210. The guide part 211 may be integrally formed with the outer surface of the bobbin 210, and may be formed continuously along the outer surface of the bobbin 210, or may be formed to be spaced apart at predetermined intervals as shown. have.

In addition, an upper spring 610 and/or a lower spring 620 provided on the upper side and/or lower side of the bobbin 210 so that the bobbin 210 can be supported from the upper side of the base 350 to be described later. The inner fastening protrusion 212 to be fastened may be formed.

In addition, the bobbin 210 is formed on the outer circumferential surface so that the inner yoke of the cover can 100 is positioned between the bobbin 210 and the first coil unit 220 wound around the bobbin 210. It may further include a concave inlet (213).

The mover 200 may include a first coil unit 220, and the first coil unit 220 may be disposed on an outer surface of the bobbin 210. Specifically, the first coil part 220 may be guided by the guide part 211 of the bobbin 210 and wound on the outer surface of the bobbin 210, and the pre-wound coil part is the guide part 211 ) Can also be mounted. Alternatively, four individual coils (not shown) may be disposed on the outer surface of the bobbin 210 at intervals of 90°. The first coil unit 220 may receive power applied from a printed circuit board (not shown) to be described later to form an electromagnetic field.

The driving unit 300 moves the mover 200, and the driving unit 300 includes a housing 310, a magnet unit 320, a second coil unit 330, a substrate 340, and a base 350. It may include.

The housing 310 may be formed in a shape corresponding to the inner surface of the cover can 100.

In an embodiment, the housing 310 is supported by the base 350 and accommodates the bobbin 210 inside, and may be formed in a hexahedral shape corresponding to the shape of the cover can 100, , The lower side may be opened to support the movable part or the bobbin 210.

In addition, the housing 310 may include a magnet part fastening groove 311 or a hole formed in a shape corresponding to the magnet part 320 on its side so that the magnet part 320 to be described later may be disposed. The magnet part fastening groove 311 or hole may be formed in the housing 310 with a number corresponding to the magnets 320a, 320b, 320c, and 320d of the magnet part 320 to be described later.

*In addition, the magnet part fastening groove 311 or the hole may be formed at each corner of the housing 310 as shown, but may be formed on each of the inner side surfaces of the housing 310.

In an embodiment, the magnet part fastening groove 311 accommodates a front surface or a partial surface of each of the magnets 320a, 320b, 320c, and 320d except for a surface (inner surface) facing the first coil part 220 It can be formed to be able to do.

The magnet part fastening groove 311 is formed to correspond to the shape and/or size of the magnets 320a, 320b, 320c, and 320d, so that the assembly tolerance for the housing 310 of the magnets 320a, 320b, 320c, and 320d Can be prevented from occurring. In addition, by applying an adhesive such as epoxy to some or all of the contact surfaces of the magnet part fastening groove 311 or the magnets 320a, 320b, 320c, and 320d, a more robust fastening and/or fastening to an accurate position may be implemented. .

In the embodiment, since the magnets 320a, 320b, 320c, and 320d have a structure in which the magnets 320a, 320b, 320c, and 320d can be rigidly and accurately fixed to the housing 310, the electromagnetic interaction with the first coil unit 220 is accurate, and the magnetic force By minimizing adhesion of foreign substances, an excellent actuator can be implemented.

In addition, the housing 310 may be formed of an insulating material, and may be formed as an injection product in consideration of productivity.

In addition, the housing 310 may be disposed to be spaced apart from the cover can 100 by a predetermined distance as a moving part for driving the OIS. In this case, the bobbin 210 may be moved in the optical axis direction by the interaction of the first coil part 220 and the magnet part 320, and the housing 310 may be described later with the magnet part 320. The interaction of the second coil unit 330 may move in a direction orthogonal to the optical axis direction and/or in a horizontal direction.

In addition, at least two stoppers 312 protruding from the upper surface of the housing 310 and capable of absorbing the shock in case of an external shock may be formed to be spaced apart from each other by a predetermined interval. The stopper 312 may be integrally formed with the housing 310, may be formed on the bobbin 210, or may not be formed.

The magnet part 320 may be disposed in the housing 310 to face the first coil part 220, that is, an inner surface thereof to face the outer surface of the first coil part 220. Specifically, the magnet part 320 may be mounted on the housing 310 with an adhesive or the like, and mounted at equal intervals at four corners inside the housing 310 to promote efficient use of the internal volume. . Alternatively, the magnet part 320 may be mounted on four inner surfaces of the housing 310 to face the first coil part 220.

Each of the magnets 320a, 320b, 320c, and 320d constituting the magnet part 320 may be formed in a trapezoidal column shape as shown, but may be in each column shape such as a triangular column shape or a square column shape. In the shape of a column, a surface facing the first coil unit 220 may be formed to include some curves. In addition, the magnets 320a, 320b, 320c, and 320d may be processed so that the edges have some curved surfaces during processing. A magnet part fastening groove 311 corresponding to the shape of each of the magnets 320a, 320b, 320c, and 320d may be formed in the housing 310.

The second coil part 330 may be disposed on the base 350 to face the magnet part 320 to move the housing. Specifically, the second coil unit 330 may be mounted on the substrate 340 provided above the base 350 to be described later, or may be formed on the substrate 340, and may be formed at the center to pass the light of the lens unit. A through hole 331 may be formed in the.

On the other hand, when considering reducing the height in the z-axis direction, which is the optical axis direction, in order to achieve miniaturization of the lens driving motor, the second coil unit 330 may be formed of an FP coil, which is a flat patterned coil. have.

The substrate 340 may be implemented as a flexible printed circuit board (FPCB) in consideration of lowering the height in the z-axis direction, which is the optical axis direction, in order to reduce the size of the lens driving motor.

In this case, the substrate 340 includes a substrate portion 344 disposed between the base 350 and the second coil portion 330 to be described later, and the substrate portion 344 is bent downward from the side of the substrate portion 344 to be disposed. A terminal portion 342 may be included, and as shown in FIG. 2, fixing portions 342b extending to one or both sides of the terminal portion 342 may be disposed. The surface of the fixing part 342b may be formed of a non-conductive material. The substrate portion 344 may be a body portion.

The terminal portion 342 may be formed equal to the height of the side surface of the base 350, or formed to be short or long, so that effective electrical contact with a printed circuit board (not shown), which will be described later, may be achieved. In the case of short, the space is filled with soldering, and in the case of long, it can be overlapped and electrically connected. In addition, the fixing portion 342b may be formed to be equal to the height of the extension portion 357 of the base 350 to be described later, or be formed to be shorter or longer.

The substrate portion 344 and the terminal portion 342 are generally patterned or plated to have electrical conductivity. Specifically, the terminal portion 342 includes a conductive region 342a of the terminal portion 342 in which a plurality of terminals 342c electrically connected to a printed circuit board (not shown) to be described later are disposed, and the conductive region 342a. ) May be formed on one or both sides of the substrate 340 to have a non-conductive property, or may be partitioned into a fixing part 342b to which a non-conductive base material is exposed.

All or part of the fixing part 342b is firmly fixed to the extension part 357 of the base 350 to be described later, and as a result, deformation of the terminal part 342 may be prevented. For solid fixing, at least one or more through holes 342d may be formed in the fixing part 342b, and the extension part 357 and the fixing part 342b of the base 350 by injecting an adhesive into these through holes ) Can be secured. The shape of the through hole 342d is illustrated in a circular shape, but is not limited thereto. Alternatively, a concave groove 357a and/or 357b may be formed in the extension portion 357 of the base 350 corresponding to the through hole 342d as shown in FIG. 3.

The terminal portion 342 may be bent downward (base direction) to be soldered with a separate printed circuit board to be described later, and the terminal portion 342 is bent at a right angle, or the cover can 100 is a base to be described later. It is bent when inserted into the 350, or is formed by being bent at an acute angle to move away from the cover can 100 toward the lower side to prevent a short circuit due to solder that may occur during soldering.

In addition, the substrate 340 may be provided on the upper side of the base 350 to be described later to apply power to the second coil unit 330, and the through hole 331 of the second coil unit 330 A through hole 341 corresponding to and is formed.

The Hall sensor unit 345 may be mounted on the substrate 340. Specifically, the Hall sensor unit 345 senses the strength and/or phase of the magnetic field to detect the movement of the magnet unit 320, and may precisely control the housing. In this case, the substrate 340 may further include a Hall sensor terminal unit 343 for applying power to the Hall sensor unit 345.

In addition, the Hall sensor unit 345 may be provided in a straight line with respect to the magnet unit 320 and the optical axis direction, and must sense the displacement of the x-axis and y-axis, the Hall sensor unit 345 It may include two Hall sensors respectively provided at two adjacent edges of the substrate 340. That is, each of the Hall sensors located under the two magnets located adjacent to each other in a right-angle direction individually senses the position of the magnets 320a, 320b, 320c, and 320d driven in the x-axis or y-axis. This is because it is easy to calculate the amount of movement in a complex manner.

In addition, the Hall sensor unit 345 may be additionally disposed on the outer surface of the bobbin 210. In this case, feedback AF can be implemented by detecting the position of the bobbin in the z-axis direction. In addition, the Hall sensor unit 345 may be disposed on the bobbin 210 inside the first coil unit 220, and in this case, the Hall sensor unit 345 is covered by the first coil unit 220 It may not be visible from the outside. In addition, the Hall sensor unit 345 may be disposed outside the first coil unit 220. One of the Hall sensor unit 345 disposed on the substrate 340 and the additional Hall sensor unit disposed on the bobbin 210 may be referred to as a “first Hall sensor” and the other may be referred to as a “second Hall sensor”. .

The Hall sensor unit 345 may be provided adjacent to the first coil unit 220 or the second coil unit 330 than the magnet unit 320, but the strength of the magnetic field formed by the magnet unit 320 Considering that is several hundred times greater than the strength of the electromagnetic field formed in the coil, the electromagnetic field of the first coil unit 220 or the second coil unit 330 may not be considered when detecting the movement of the magnet unit 320. have.

Due to the independent or organic interaction of the first coil unit 220 and/or the second coil unit 330 and the magnet unit 320, the lens unit to be described later is moved in all directions to focus the image focus of the subject. , Hand shake, etc. can be corrected.

Here, adjusting the focus of the image means an AF (Auto Focusing) function that moves the lens unit in the z-axis direction, which is the optical axis direction, for focusing near or far distance of the subject, or perpendicular to the z-axis direction for camera shake correction. It may mean an OIS (Optical Image Stabilization) function for moving the lens unit in the x- and y-axis directions, or a function capable of simultaneously performing the AF function and the OIS function.

That is, the embodiment may be implemented as an A.F (Auto Focusing) type or an OIS (Optical Image Stabilization) type.

Although the above-described embodiment has been described for the OIS type, it may be implemented as an electronic auto-focusing (AF) type, and in this case, the embodiment may not include the second coil unit 330 and the substrate 340. have.

The base 350 supports the mover 200 and the driving part 300, and a through hole 351 corresponding to the lens part is formed in the center. In addition, the base 350 may have a circular shape in the center so that the bobbin 210 may be spaced apart from each other, and a recess portion (not shown) recessed downward may be formed. As shown in FIG. 3, the base 350 may include a step portion 359 protruding from the outer circumferential surface of the base 350. The side plate of the cover can 100 may be disposed on the stepped portion 359 of the base 350.

In addition, the base 350 may be formed with one or more fixing protrusions 352 protruding from the upper corners and interfacing or engaging with the inner surface of the cover can 100, and such fixing protrusions 352 It guides the fastening of the can 100 easily and at the same time makes it possible to achieve a firm fixation after fastening.

In addition, the base 350 may have a seating groove 354 in which the terminal portion 342 is seated on a side surface, and the terminal portion 342 may be formed to be recessed into at least one side surface of the base 350. In addition, the seating groove 354 may be formed at a right angle or an acute angle toward the bottom so as to correspond to the bending angle of the terminal part 342.

In addition, the base 350 may have a Hall sensor receiving groove 353 corresponding to each Hall sensor of the Hall sensor unit 345, and in this case, the Hall sensor is mounted on the lower side of the substrate 340. This is advantageous in miniaturization of the inner height.

In addition, an extension part 357 protruding at a position corresponding to the inner surface of the fixing part 342b may be formed on the lower side of the base 350. This extension part 357 may protrude inward, and since it supports the fixing part 342b from the inside, it can effectively prevent bending or cracking of the terminal part 342 of the substrate 340. I can.

In addition, since the terminal portion 342 may be seated in the seating groove 354, the extension portion 357 may be formed on a lower side of the seating groove 354. In addition, since the terminal part 342 must physically contact the printed circuit board in order to be electrically connected to the printed circuit board, the extension part 357 may be formed equal to or smaller than the terminal part 342.

In addition, such an extension part 357 is a concave groove (357a, and/or 357b) through which an adhesive can be introduced into a side and/or a lower side in contact with the fixing part in order to firmly support the fixing part 342b. Can be formed.

In addition, the lens driving motor may be combined with a camera module, in this case, the base 350 may perform a sensor holder function to protect an image sensor (not shown) to be described later, and a filter (not shown) Can be placed. In this case, the filter may be mounted in the through hole 351 formed in the center of the base 350, and an infrared filter or a blue filter may be provided.

Here, the filter (not shown) may be formed of, for example, a film material or a glass material, and an infrared blocking coating material may be disposed on a flat optical filter such as a cover glass or cover glass for protecting an imaging surface. In addition, a separate sensor holder (not shown) may be positioned under the base 350 in addition to the base 350.

On the other hand, when the filter is installed outside the lens, it is of course possible to block infrared rays by coating the lens surface without separately configuring the filter.

On the other hand, the driving unit according to the embodiment of the present invention may further include an elastic unit (600).

The elastic unit 600 may include an upper spring 610, a lower spring 620, and a side spring 630.

The upper spring 610 and the lower spring 620 may be formed of separate springs disposed on each side of the housing 310, but for the efficiency of production, a single plate is bent and cut. It is preferably made of.

The upper spring 610 is disposed at an upper end of the housing 310 and protrudes a predetermined width in the optical axis direction from an opening formed at the upper end, and the protruding portion supports the upper end side of the bobbin 210. That is, the upper spring 610 is fastened to the upper surface of the housing 310 and the upper surface of the bobbin 210 to support the bobbin 210, and to provide a return force when the bobbin 210 moves upward, the housing It is provided on the upper end of (310).

Specifically, the upper spring 610 includes a first upper spring 610a through which power applied from a printed circuit board to be described later flows in, and a second upper spring through which the applied power is energized to the first coil pattern part. (610b).

The first upper spring 610a and the second upper spring 610b may be formed as a leaf spring in a symmetrical or asymmetrical shape around an optical axis, and may be formed as a single leaf spring, but separate for input/output of power. It is preferably formed of a leaf spring.

Each of the first upper spring 610a and the second upper spring 610b includes an outer portion 611 fastened to the housing 310, an inner portion 612 fastened to the bobbin 210, and the outer portion ( It includes a connection portion 613 electrically connecting the 611 and the inner portion 612. Here, the connection part 613 may be formed as at least one bending part.

In order to fasten the upper spring 610, at least one outer fastening protrusion 313 is formed on the upper side of the housing 310, and the outer fastening protrusion 313 corresponds to the outer part 611. The formed outer fastening hole 611a may be formed. In addition, an outer protrusion 611b is formed on the outer portion 611 to be electrically connected to two side springs 630 to be described later.

Meanwhile, for fastening of the upper spring 610, at least one inner fastening protrusion 212 is formed on the upper side of the bobbin 210, and the inner fastening protrusion 212 is formed on the inner part 612. A correspondingly formed inner fastening hole 612a may be formed.

*In addition, the inner part 612 of each of the first upper spring 610a and the second upper spring 610b is electrically connected to one end 221 and the other end 222 of the coil wound around the first coil part 220. Inner protrusions 612b to be connected to each other are formed.

The outer protrusion 611b and the side spring 630, the inner protrusion 612b, and one end 221 and the other end 222 of the coil may be electrically coupled by soldering, respectively.

Meanwhile, the outer portion 611 of the lower spring 620 is supported on the upper surface of the base 350, and the inner portion 612 supports the lower end side of the bobbin 210. Since the lower spring 620 does not input or output the power of the printed circuit board, which will be described later, the lower spring 620 may be formed as a single leaf spring.

One side of the side spring 630 is fastened to the side surface of the housing 310 and the other side is fastened to the side surface of the base 350. The side springs 630 may be provided with four side springs forming a predetermined interval at an angle of 90°.

A damper member (not shown) may be applied to the bonding surface between the side spring 630 and the housing 310 and/or the base 350 in order to attenuate the vibration of the x and y axes. The damper member may be implemented as an epoxy material in the form of a sol or gel, and may be applied between the side spring 630 and the housing 310 and/or the base 350 to absorb impact.

On the other hand, the lens driving motor according to the embodiment may be mounted on a camera module, and such a camera module includes a variety of multimedia fields such as mobile phones or notebook personal computers, camera phones, PDAs, smarts, toys, etc. It may be provided in an image input device such as an information terminal of a camera or video tape recorder.

When the lens driving motor according to the embodiment is provided in the camera module, a camera module may be configured by further including a lens unit, a printed circuit board, and/or an image sensor, which are not shown.

The lens unit, not shown, may be a lens barrel, but is not limited thereto, and any holder structure capable of supporting the lens may be included. In the embodiment, a case where the lens unit is a lens barrel is described as an example.

The lens unit is installed on the upper side of the printed circuit board to be described later, and is disposed at a position corresponding to the image sensor. One or more lenses are provided in the lens unit.

In the not shown printed circuit board, an image sensor (not shown) may be mounted in the center of the upper side, and various elements for driving the camera module may be mounted. In addition, in order to apply power for driving the lens driving motor according to the embodiment, the printed circuit board may include the terminal unit 342 or the lower spring 620 or the upper spring 610 or directly the first coil unit ( 220) and/or the second coil unit 330 are electrically connected.

In addition, the printed circuit board may have a soldering point to apply power to the terminal of the terminal part 342.

Above, by the above description, those skilled in the art will recognize that various changes and modifications can be made without departing from the technical spirit of the present invention, and the technical scope of the present invention is not limited to the contents described in the embodiments, but claims It should be determined according to the scope and the scope equivalent thereto.

100: cover can 200: mover
210: bobbin 220: first coil unit
300: drive unit 310: housing
320: magnet part 330: second coil part
340: substrate 350: base

Claims (20)

housing;
A bobbin disposed in the housing;
A base at least partially disposed under the housing;
A first coil and a magnet moving the bobbin in the optical axis direction;
A substrate disposed on the base;
A second coil disposed on the substrate and facing the magnet;
An upper spring connecting the housing and the bobbin;
A side spring connected to the upper spring; And
Includes a first Hall sensor for sensing the position of the bobbin in the direction of the optical axis,
The upper spring includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, a connection portion connecting the outer portion and the inner portion, an outer protrusion extending from the outer portion, and an inner protrusion extending from the inner portion. ,
The outer protrusion is coupled to the side spring,
The inner protrusion is a lens driving motor coupled to one end and the other end of the first coil. The method of claim 1,
The outer protrusion is coupled to the side spring through soldering,
The inner protrusion is a lens driving motor coupled to one end and the other end of the first coil through soldering. The method of claim 1,
A lens driving motor comprising a damper member disposed between the side spring and the housing. The method of claim 1,
Including a cover can including a top plate and a side plate extending from the top plate,
The cover can covers the housing and the lens driving motor is coupled to the base. The method of claim 4,
The substrate includes a body portion disposed on an upper surface of the base and a terminal portion extending downward from the body portion,
The terminal portion includes a first fixing portion and a second fixing portion, and a terminal of a conductive material disposed between the first fixing portion and the second fixing portion,
The first fixing portion and the second fixing portion is a lens driving motor that is fixed to the base by an adhesive. The method of claim 5,
The base includes a step portion protruding from the outer circumferential surface of the base,
The side plate of the cover can is disposed on the step portion of the base,
The base includes a groove formed on the outer circumferential surface of the base,
The terminal portion of the substrate is disposed in the groove of the base such that at least a portion of the terminal portion of the substrate is disposed between the base and the side plate of the cover can. The method of claim 5,
The first fixing part and the second fixing part are a lens driving motor made of a non-conductive material. The method of claim 5,
The first fixing portion and the second fixing portion is a lens driving motor including a through hole. The method of claim 5,
The base includes a first protrusion and a second protrusion extending from a lower surface of the base,
A lens driving motor wherein the first protrusion and the second protrusion are spaced apart from each other. The method of claim 9,
A lens driving motor including a concave groove through which an adhesive is introduced into a side or a lower surface of the first and second fixing portions and the first and second fixing portions and the first and second fixing portions. The method of claim 1,
The first Hall sensor is a lens driving motor disposed on an outer surface of the bobbin. The method of claim 1,
Including a second Hall sensor disposed on the substrate,
The second Hall sensor is a lens driving motor that overlaps with the magnet in the optical axis direction. The method of claim 1,
The first coil is disposed on the bobbin,
The magnet is a lens driving motor disposed in the housing. Printed circuit board;
An image sensor disposed on the printed circuit board;
The lens driving motor of claim 1 disposed on the printed circuit board; And
A camera module including a lens coupled to the bobbin of the lens driving motor. A portable terminal comprising the camera module of claim 14. housing;
A bobbin disposed in the housing;
A base at least partially disposed under the housing;
A first coil disposed on the bobbin;
A magnet disposed in the housing and facing the first coil;
A substrate disposed on the base;
A second coil disposed on the substrate and facing the magnet;
An upper spring connecting the housing and the bobbin;
A side spring connected to the upper spring; And
And a damper member disposed between the side spring and the housing,
The upper spring includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, a connection portion connecting the outer portion and the inner portion, an outer protrusion extending from the outer portion, and an inner protrusion extending from the inner portion. ,
The outer protrusion is electrically connected to the side spring,
The inner protrusion is a lens driving motor electrically connected to one end and the other end of the first coil. The method of claim 16,
The upper spring is a lens driving motor that electrically connects the first coil and the side spring. The method of claim 16,
A lens driving motor comprising a first Hall sensor sensing the position of the bobbin in the optical axis direction. The method of claim 18,
Including a second Hall sensor disposed on the substrate,
The first Hall sensor is a lens driving motor disposed on the bobbin. housing;
A bobbin disposed in the housing;
A base at least partially disposed under the housing;
A first coil and a magnet moving the bobbin in the optical axis direction;
A substrate disposed on the base; And
A lens driving motor comprising a second coil disposed on the substrate and facing the magnet.

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