KR102262584B1 - Motor for actuating lens - Google Patents

Abstract

Embodiments include a mover comprising a bobbin; a driving unit for moving the mover; a base supporting the mover and the driving unit; a cover can fastened to the base to accommodate the mover and the driving unit; and an insulating portion disposed on a part or all of at least one side of the cover can.

Description

Lens drive motor {MOTOR FOR ACTUATING LENS}

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

As various types of portable terminals are widely distributed and wireless Internet services are commercialized, the demands of consumers related to portable terminals are also diversifying. Accordingly, various types of additional devices are being installed in portable terminals.

Among them, a camera module is a representative that can take a photo or video of a subject, store the image data, and edit and transmit it as needed.

In recent years, the demand for compact camera modules is increasing for use in various multimedia fields such as notebook personal computers, camera phones, PDA, smart devices, toys, etc., and for image input devices such as information terminals of surveillance cameras and video tape recorders. .

The camera module includes a lens driving motor, and the lens driving motor may include a mover, a driving unit, a base supporting the mover and the driving unit, and a cover can.

The base may be disposed on a printed circuit board, and a coil portion of the mover is soldered to be electrically connected to the printed circuit board to drive the mover. In addition, the cover can is typically formed of a metal material to block external radio waves and the like.

However, since the solder generated during the soldering operation between the coil unit and the printed circuit board has a strong affinity with the metal material as described above, it may come into contact with the cover can, and in this case, a short circuit may occur.
(Patent Document 1) JP Patent Publication 2013-024938A

The embodiment may provide a lens driving motor with improved reliability, including prevention of short-circuit by soldering, while maintaining the performance of the cover can.

Embodiments include a mover comprising a bobbin; a driving unit for moving the mover; a base supporting the mover and the driving unit; a cover can fastened to the base to accommodate the mover and the driving unit; and an insulating portion disposed on a part or all of at least one side of the cover can.

In addition, the cover can may be formed of a metal material.

In addition, the insulating portion may be deposited on the entire inner surface of the cover can.

In addition, the insulating part may be deposited on the lower end of the outer surface of the cover can.

In addition, the insulating portion may be deposited on the entire inner surface and the lower end of the outer surface of the cover can.

In addition, the insulating part may be formed on the cover can by spray coating ceramic.

In addition, the insulating part may be formed on the cover can by spray coating a Teflon resin.

In addition, the mover includes a first coil part disposed on an outer surface of the bobbin, the driving part includes a housing supported by the base and accommodating the bobbin therein; A substrate including a magnet portion disposed, a second coil portion disposed on the base to face the magnet portion, and a terminal portion disposed between the second coil portion and the base and bent to be connected to an external power source at one side may include

In addition, the base may be formed with a seating groove in which the terminal part is seated on the side.

In addition, the cover can has an extended portion extending downward a predetermined distance from one surface of the cover can coupled to the base, corresponding to the seating groove, and at least a portion of the inner surface and the outer surface of the one surface on which the extension portion is formed has the insulating portion can be deposited.

According to an embodiment of the present invention, by forming an insulating part on the cover can, it is possible to prevent an electrical short due to soldering during assembly, so that a lens driving motor or a camera module with improved reliability can be implemented.

1 is an exploded perspective view of a lens driving motor according to an embodiment of the present invention;
2 is a view showing a camera module in which a lens driving motor is combined with a printed circuit board according to an embodiment of the present invention.
3 is a perspective view of a cover can with an insulating part 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 specified, all terms herein have the same general meaning as understood by those skilled in the art, and if a term used in this specification conflicts with the general meaning of the term, the definition used herein shall govern.

However, the invention to be described below is only for explaining the embodiments of the present invention, not for limiting the scope of the present invention, and the same reference numbers used throughout the specification indicate the same components.

Hereinafter, the lens driving motor of the embodiment will be described in detail with reference to the drawings.

1 is an exploded perspective view of a lens driving motor according to an 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 , a base 400 , a cover can 100 and an insulating unit 500 , and an elastic unit. (600) may be further included.

The cover can 100 may be fastened to a base 400 to be described later to accommodate the mover 200 , the driving unit 300 and the elastic unit 600 , and may form the exterior of the lens driving motor. As shown, the cover can 100 may be formed in the shape of a rectangular parallelepiped in which an opening is formed on the upper side and the lower side is opened, but the shape of the cover can 100 is not limited thereto.

In other words, 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 inner surface of the cover can 100 may be in close contact with the side portion of the base 400 to be described later so that the lower surface thereof may be closed by the base 400, while protecting the internal components from external impact and external contamination It may have a material penetration prevention function.

In addition, the cover can 100 may also perform a function of protecting the components of the camera module from external 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.

The cover can 100 may be implemented as a yoke unit itself, which will be described later, or may be fixed by molding the yoke unit on the inside. In an embodiment, an inner yoke (not shown) bent inside the cover can 100 may be formed on the inner side of the upper side of the cover can 100 . This inner yoke may be located in the concave portion 213 formed in the bobbin 210 to be described later. In this case, the inner yoke may be disposed at a corner around the opening on the upper side of the yoke portion or may be disposed on the side, and the concave portion 213 of the bobbin 210 may be formed at a corresponding position.

In addition, the cover can 100 may be formed with an extension portion 110 in which a portion corresponding to the seating groove 420 extends downward by a predetermined interval among one surface fastened to the base 400 to be described later. Due to the part 110 , when the cover can 100 is inserted into the base 400 , the terminal part 342 of the substrate 340 , which will be described later, may be naturally bent.

The mover 200 may be moved by accommodating a lens or a lens unit 800 to be described later. The mover 200 may include a bobbin 210 and a first coil unit 220 .

The bobbin 210 may accommodate the lens unit 800 therein. Specifically, the bobbin 210 is coupled to a lens unit 800 to be described later to fix the lens unit 800 , and the coupling method between the lens unit 800 and the bobbin 210 is a screw thread of the bobbin 210 . A thread coupling method in which the inner circumferential surface and the outer circumferential surface of the lens unit 800 are respectively formed and fastened may be used, but may also be coupled in a non-threaded method using an adhesive. Of course, even in the screw thread coupling method, it is possible to achieve a more robust mounting between each other by using an adhesive after the screw thread fastening.

In addition, a guide part 211 , which guides winding or mounting of the first coil part 220 , which will be described later, may be formed on the outer peripheral 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 from each other 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 on the upper side of the base 400 to be described later. An inner fastening protrusion 212 to which this is 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 described above can be positioned between the bobbin 210 and the first coil unit 220 wound around the bobbin 210 . It may further include a concave portion 213 .

The first coil unit 220 may be disposed on an outer surface of the bobbin 210 . Specifically, it may be guided by the guide part 211 of the bobbin 210 and wound on the outer surface of the bobbin 210 , or a pre-wound coil part may be mounted on the guide part 211 . 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 700 to be described later to form an electromagnetic field.

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

The housing 310 may be formed in a shape corresponding to the inner surface of the cover can 100 . In addition, the housing 310 may not be provided separately, but may be formed integrally with the cover can 100 to form the exterior of the lens driving motor.

In an embodiment, the housing 310 may be supported on the base 400 and accommodate the bobbin 210 inside, and may be formed in a hexahedral shape to correspond to the shape of the cover can 100 , , the lower side is open to support the movable part.

In addition, the housing 310 may include a magnet part fastening groove 311 formed in a shape corresponding to the magnet part 320 to be described later on the side surface. The magnet part fastening groove 311 may be formed in the housing 310 having a number corresponding to the number of magnets of the magnet part 320 to be described later. In addition, the magnet part fastening groove 311 may be formed in each corner of the housing 310 as shown, but may also be formed in each inner surface of the housing 310 .

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

Also, the housing 310 is a moving part for driving the OIS and may be disposed to be spaced apart from the cover can 100 by a predetermined distance. In this case, the bobbin 210 may be moved in the optical axis direction due to the interaction between the first coil unit 220 and the magnet unit 320 , and the housing 310 may be connected to the magnet unit 320 and to be described later. Due to the interaction of the second coil unit 330 , it may move in all directions orthogonal to the optical axis direction.

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

The magnet unit 320 may be mounted to the housing 310 with an adhesive or the like so as to be disposed on the housing 310 to face the first coil unit 220 , and may It is mounted at equal intervals on the corners of the dog to promote efficient use of the internal volume. Alternatively, the magnet unit 320 may be mounted on four inner surfaces of the housing 310 to face the first coil unit 220 .

The shape of each of the magnets constituting the magnet unit 320 may be formed in a trapezoidal pole shape as shown, but may be prismatic, such as a triangular prism shape or a square prism shape, and the first coil part ( 220) and the opposite surface may be formed to include some curves. In addition, the magnet may be processed so that the corner has a partial curved surface during processing.

The second coil unit 330 may be disposed on the base 400 to face the magnet unit 320 . Specifically, the second coil unit 330 may be mounted on or formed on a substrate 340 provided on an upper side of the base 400 to be described later, and the optical signal of the lens unit 800 . A through hole 331 may be formed in the center to pass through.

Meanwhile, in consideration of reducing the height in the z-axis direction, which is the optical axis direction, in order to reduce the size of the lens driving motor, the second coil unit 330 may be formed of an FP coil that is a patterned coil. .

The substrate 340 may be implemented as a flexible printed circuit board (FPCB) in consideration of reducing 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 addition, the substrate 340 may include a terminal portion 342 disposed between the second coil portion 330 and the base 400 and bent to be connected to an external power source on one side. In this case, the terminal part 342 may be bent downward (in the direction of the base 400) to be soldered to a separate printed circuit board 700 to be described later, and the terminal part 342 may be bent at a right angle or the cover The can 100 is bent when inserted into the base 400 to be described later, or is bent at an acute angle away from the cover can 100 toward the lower side to prevent short circuit caused by solder that may occur during soldering. have.

In addition, the substrate 340 may be provided on the upper surface of the base 400 to apply power to the second coil unit 330 , and the through hole 331 of the second coil unit 330 and A corresponding through hole 341 is formed.

The hall sensor unit 345 may be mounted on the substrate 340 . Specifically, the hall sensor unit 345 senses the strength and phase of a magnetic field to sense the movement of the magnet unit 320 , and interacts with the substrate 340 to form the first coil unit 220 and / or provided to precisely control the second coil unit 330 . In this case, the substrate 340 may further include a Hall sensor terminal 343 for applying power to the Hall sensor 345 .

In addition, the Hall sensor unit 345 may be provided on a straight line with respect to the magnet unit 320 and the optical axis direction, and has to detect displacements in the x-axis and the y-axis, so that the Hall sensor unit 345 is the It may include two Hall sensors respectively provided at two adjacent corners among the corners of the substrate 340 . That is, it is easy to complexly calculate the movement amount of the magnet unit 320 by individually sensing the position of the magnet driven in the x-axis or the y-axis of each of the hall sensors located under the two magnets positioned adjacently in the right-angle direction. because it does

Also, the Hall sensor unit 345 may be disposed on an outer surface of the bobbin 210 . In addition, the Hall sensor unit 345 may be disposed on the bobbin 210 inside the first coil unit 220 . In this case, the Hall sensor unit 345 is covered by the first coil unit 220 . It may not be visible from the outside. Also, the Hall sensor unit 345 may be disposed outside the first coil unit 220 .

Although the hall sensor unit 345 is provided closer to the first coil unit 220 or the second coil unit 330 than the magnet unit 320 , the strength of the magnetic field formed in the magnet unit 320 increases the strength of the coil. Considering that the strength of the electromagnetic field formed in , is several hundred times greater, the electromagnetic field of the first coil unit 220 or the second coil unit 330 is not taken into consideration in detecting the movement of the magnet unit 320 .

Due to the independent or organic interaction between the first coil unit 220 and/or the second coil unit 330 and the magnet unit 320 , the lens unit 800, which will be described later, is moved in all directions to obtain an image of the subject. It is possible to focus the focus and correct hand shake.

Here, adjusting the focus of the image means an AF (Auto Focusing) function when the lens unit 800 is moved in the z-axis direction, which is the optical axis direction, for near or far focusing of the subject, or the z It may mean an OIS (Optical Image Stabilization) function that moves the lens unit 800 in the x and y-axis directions that are perpendicular to the axial direction, or may mean a function capable of simultaneously performing the AF function and the OIS function. .

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

Although the above-described embodiment has been described with respect to the OIS type, the former may be implemented as an auto-focusing (AF) type. In this case, the embodiment may not include the second coil unit 330 and the substrate 340 . have.

The base 400 supports the mover 200 and the driving unit 300 , and a through hole 401 corresponding to the lens unit 800 is formed in the center. In addition, the base 400 may have a circular shape in the center so that the bobbin 210 may be positioned to be spaced apart from each other, and a recess (not shown) concave downward may be formed.

In addition, the base 400 may be formed with one or more fixing protrusions 410 that protrude from the upper corner to face or combine with the inner surface of the cover can 100 , and these fixing protrusions 410 are the cover cans 100 . It facilitates guiding the fastening of the can 100 and at the same time makes it possible to achieve firm fixation after fastening.

In addition, the base 400 may have a seating groove 420 in which the terminal part 342 is seated on the side thereof, and the terminal part 342 may be recessed into at least one side surface. In addition, the seating groove 420 may be formed at a right angle or an acute angle toward the bottom to correspond to the bending angle of the terminal part 342 .

In addition, the base 400 may have a Hall sensor receiving groove 430 corresponding to each Hall sensor of the Hall sensor unit 345 . In this case, the Hall sensor is mounted on the lower side of the substrate 340 . It is advantageous in miniaturization of the inner height.

In addition, the base 400 may perform a sensor holder function to protect an image sensor (not shown) to be described later, and a filter (not shown) may be disposed. In this case, the filter may be mounted in the through hole 401 formed in the center of the base 400 , 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 for protecting an imaging surface or a cover glass. In addition, a separate sensor holder (not shown) may be located under the base 400 in addition to the base 400 .

On the other hand, when the filter is installed on the outside of the lens, of course, it is 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 includes 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 efficiency in production, a plate spring in a shape in which a single plate is bent and cut. It is preferable to consist of

The upper spring 610 is disposed at the upper end of the housing 310 and protrudes from an opening formed at the upper end in the optical axis direction by a predetermined area, and the protruding portion supports the upper end 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. It is provided at the upper end of the 310 .

Specifically, the upper spring 610 includes a first upper spring 610a into which power applied from a printed circuit board 700, which will be described later, flows in, and a first spring 610a through which the applied power flows through the first coil pattern part and flows out. 2 includes an upper spring (610b).

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

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

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

On the other hand, for the fastening of the upper spring 610, at least one inner fastening protrusion 212 is formed on the upper surface of the bobbin 210, and the inner fastening protrusion 212 is formed on the inner part 612. Correspondingly formed inner fastening holes 612a may be formed.

In addition, one end 221 and the other end 222 of the coil wound around the first coil unit 220 are electrically connected to the inner portion 612 of each of the first upper spring 610a and the second upper spring 610b. An inner protrusion 612b for connection is formed, respectively.

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 400 , and the inner portion 612 supports the lower end of the bobbin 210 . The lower spring 620 may be formed as a single leaf spring because power of the printed circuit board 700, which will be described later, is not input or output.

One side of the side spring 630 is fastened to a side surface of the housing 310 to attenuate vibrations in the x and y axes, and the other side is fastened to a side surface of the base 400 . The side spring 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 of the side spring 630 and the housing 310 and/or the base 400 . Such a 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 400 to absorb an 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 is a mobile phone or a notebook personal computer, a camera phone, PDA, smart, a variety of multimedia fields such as toys (toy), and further monitoring It may be provided in an image input device such as an information terminal of a camera or a video tape recorder.

2 is a diagram illustrating a camera module in which a lens driving motor is combined with a printed circuit board 700 according to an embodiment of the present invention.

Referring to FIG. 2 , when the lens driving motor according to the embodiment is provided in the camera module, it may further include a lens unit 800 , a printed circuit board 700 , and/or an image sensor (not shown).

The lens unit 800 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 in which the lens unit 800 is a lens barrel will be described as an example.

The lens unit 800 is installed on the upper side of the printed circuit board 700, which will be described later, and is disposed at a position corresponding to the image sensor. The lens unit 800 includes one or more lenses.

The printed circuit board 700 may have an image sensor (not shown) mounted on the center of the upper side, and various elements 710 for driving the camera module may be mounted thereon. In addition, the printed circuit board 700 is the terminal part 342 or the lower spring 620 or the upper spring 610 or directly the first to apply power for driving the lens driving motor according to the embodiment. It is electrically connected to the coil unit 220 and/or the second coil unit 330 .

In addition, the printed circuit board 700 has a soldering point 720 in order to apply power to the terminal part 342 . In this case, when soldering the terminal part 342 and the printed circuit board 700 , the solder may ignite on the cover can 100 , which is a metal material. In this case, an electrical short may occur when power is applied, and defects in the process may occur. can occur

Accordingly, the embodiment may further include an insulating part 500 disposed (deposited or coated, laminated or adhered) on at least one side part or all of the cover can 100 .

3 is a perspective view of a cover can in which an insulating part is displayed according to an embodiment of the present invention.

Referring to FIG. 3 , the insulating part 500 may be deposited, coated, laminated or adhered to the cover can 100 by spray coating, dip coating, spin coating, flow coating, etc., ceramic coating, silicone coating, It may be implemented as any one of the resin coatings. The resin may be selected from any one of Teflon, fluororesin, or polyethylene.

In an embodiment, the insulating part 500 may be coated with, laminated, or adhered to a ceramic capable of maintaining the appearance of the existing cover can 100 as a transparent paint by a spray method. Alternatively, a Teflon resin excellent in insulation, abrasion resistance, acid resistance and heat resistance may be sprayed or coated, laminated, or adhered.

The insulating part 500 may be implemented entirely or locally in the cover can 100 . When implemented locally on the cover can 100, coating, lamination, or adhesion may be performed locally or only at a desired location efficiently through a coating mask jig.

The insulating part 500 prevents the solder ball from being attached to the cover can 100 even if the solder ball bounces during the soldering operation, so it is possible to prevent an electric short circuit, and a terminal part 342 short circuit that may occur at the camera module end. It is possible to prevent the occurrence of a short circuit in advance.

In addition, since the insulating part 500 can deposit a coating thickness at a fine level (about 2 μm) by a spray method, there is no need to change the design of the existing cover can 100 , Interference of external components can be avoided.

In addition, in the insulating part 500, the above-described 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. Therefore, it may be deposited on all or part of the inner surface of the cover can 100 in order to prevent an internal short circuit due to use. In addition, the insulating part 500 of the cover can 100 may be disposed near or near an electrical coupling part such as the soldering.

In addition, the insulating part 500 may be deposited on the lower end of the outer surface of the cover can 100 , or may be deposited on the entire inner surface and the lower end of the outer surface of the cover can 100 , or the exposed portion It may be deposited on at least a portion of the inner surface and/or the outer surface of the formed one surface.

The deposition of all or part of the insulating part 500 is variously performed in consideration of the soldering position of the terminal part 342 and the printed circuit board 700 , the electrical environment inside and outside the cover can 100 , or product productivity, etc. can be deposited.

The substrate 340 may include a terminal part 342 including a plurality of terminals. The terminal part 342 of the substrate 340 may be disposed on the first side of the base 400 . The side plate of the cover can 100 may include a first side plate disposed at a position corresponding to the first side of the base 400 . 2 and 3 , the first side plate of the cover can 100 has a first area 121 disposed at both corners, and a first groove 122 recessed from the lower end of the first area 121 . ) and the second groove 123 , the extension part 110 disposed between the first groove 122 and the second groove 123 and protruding downward from the first groove 122 and the second groove 123 . may include. The substrate 340 may include a body portion on which the second coil portion 330 is disposed, and the terminal portion 342 may extend downward from the body portion. The terminal portion 342 may include a first portion in which a plurality of terminals are disposed and a second portion connecting the first portion and the body portion. The extension part 110 of the cover can 100 may overlap the second part of the terminal part 342 in a direction perpendicular to the optical axis direction. The lower end of the extension part 110 may be disposed at the lowest position among the lower ends of the first side plate of the cover can 100 . As shown in FIG. 2 , the base 400 may include a protrusion 440 protruding from the lower end of the first side of the base 400 . The protrusion 440 may be a stepped portion. The first region 121 of the cover can 100 may be disposed on the upper surface of the protrusion 440 .

Above, those skilled in the art from the above description will know that various changes and modifications are possible 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 by the scope and its equivalent scope.

100: cover can 200: mover
210: bobbin 220: first coil unit
300: driving unit 310: housing
320: magnet unit 330: second coil unit
340: substrate 400: base
500: insulation

Claims (20)

a cover can comprising a top plate and a side plate extending from the top plate;
a bobbin disposed in the cover can;
a base coupled to the side plate of the cover can;
a magnet and a first coil disposed in the cover can;
a substrate disposed on the base; and
a second coil disposed on the substrate;
The substrate includes a terminal portion including a plurality of terminals,
The terminal part of the board is disposed on the first side of the base,
The side plate of the cover can includes a first side plate disposed at a position corresponding to the first side of the base,
The first side plate of the cover can includes a first area disposed at both corners, first and second grooves recessed from a lower end of the first area, and disposed between the first and second grooves, an extension formed between the first groove and the second groove;
The base includes a step portion formed on the first side of the base,
The first region of the cover can is a lens driving motor disposed on an upper surface of the step portion of the base. According to claim 1,
The substrate includes a body portion on which the second coil is disposed,
The terminal portion extends downward from the body portion,
The extended portion of the cover can overlaps the terminal portion of the substrate in a direction perpendicular to the optical axis direction. 3. The method of claim 2,
The terminal portion includes a first portion in which the plurality of terminals are disposed, and a second portion connecting the first portion and the body portion,
The extension part of the cover can overlaps the second part of the terminal part in a direction perpendicular to the optical axis direction. 4. The method of claim 3,
The second part of the terminal part is disposed between the extension part of the cover can and the first side surface of the base. According to claim 1,
The lower end of the first region is a lens driving motor disposed on the base. According to claim 1,
The base is a lens driving motor including a plurality of fixing projections protruding from a corner region of the upper surface of the base and coupled to the inner surface of the cover can. According to claim 1,
The lower end of the extension part is a lens driving motor disposed at the lowest position among the lower ends of the first side plate of the cover can. According to claim 1,
A lens driving motor including an insulating part disposed on an inner surface of the extension part of the cover can. According to claim 1,
The base includes a seating groove formed on the first side of the base,
A part of the substrate is a lens driving motor disposed in the seating groove of the base. According to claim 1,
The magnet is a lens driving motor comprising four magnets spaced apart from each other. According to claim 1,
and an insulating part disposed on an outer surface of the extension part of the first side plate of the cover can. According to claim 1,
and a housing disposed between the bobbin and the cover can,
The first coil is disposed on the bobbin,
The magnet is a lens driving motor disposed in the housing. 13. The method of claim 12,
an upper spring connecting the bobbin and the housing;
a lower spring connecting the bobbin and the housing and disposed below the upper spring; and
A lens driving motor including a side spring electrically connected to the upper spring. According to claim 1,
A lens driving motor including insulating parts on the inner and outer surfaces of the cover can. printed circuit board;
an image sensor disposed on the printed circuit board;
The lens driving motor of claim 7 disposed on the printed circuit board; and
A camera module including a lens coupled to the bobbin of the lens driving motor. A mobile terminal comprising the camera module of claim 15 .
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