KR20210124948A - A camera module and optical apparatus - Google Patents

Abstract

The present invention relates to a housing. The housing includes an elastic member fastening protrusion, a foreign material discharge path located on one side of the elastic member fastened to the elastic member fastening protrusion, and an opening part communicating with the foreign material discharge path. At least a portion of the foreign material discharge path is inclined in the direction of the opening part so that a discharge liquid located in the foreign material discharge path is naturally drained through the opening part. Through the present invention, it is easy to clean foreign substances positioned between the elastic member and the housing. So, the effect of reducing auto-focusing tilt defects that occur after assembly can be expected.

Description

Camera module and optical device {A CAMERA MODULE AND OPTICAL APPARATUS}

An example of the present invention relates to a camera module and an optical device.

In general, a magnet and a coil are provided inside a camera module to provide an auto-focusing function and the like. When power is supplied to the coil, the mover provided with the coil moves up and down with respect to the housing provided with the magnet by interaction with the magnetic force of the magnet to provide an auto-focusing function and the like.

Accordingly, the mover needs to be movably fixed relative to the housing. Accordingly, the mover and the housing may be coupled by an elastic member. However, in this case, if the assembly is completed with foreign substances such as thread, dust, or metal fragments in between the housing and the elastic member, then the foreign material touches the elastic member and is classified as an Auto Focusing Tilt defect, so the process defect rate rises. is causing the

On the other hand, even if the cleaning process of foreign substances is performed before assembly is completed, there are frequent cases in which the cleaning liquid mixed with foreign substances is trapped between the elastic member and the housing and cannot escape. In addition, auto-focusing hysteresis failure occurs, which is a serious problem.

(Patent Document 1) JP2011-155414 A

In order to solve the above problem, an object of the present invention is to provide a housing including a foreign material discharge path formed so that the discharge liquid (foreign material and cleaning liquid) positioned between the elastic member and the housing is naturally drained.

An object of the present invention is to provide a camera module and an optical device including the housing.

In order to solve the above problems, the housing according to an example of the present invention, the elastic member fastening protrusion; a foreign material discharge path located at one side of the elastic member fastened to the elastic member fastening protrusion; and an opening communicating with the foreign material discharge path, wherein the air injected into the foreign material discharge path may be discharged through the opening together with the foreign material positioned on the foreign material discharge path.

A housing according to another embodiment of the present invention includes: an elastic member fastening protrusion; a foreign material discharge path located at one side of the elastic member fastened to the elastic member fastening protrusion; and an opening communicating with the foreign material discharge path, wherein at least a portion of the foreign material discharge path may be inclined toward the opening so that the discharge liquid located in the foreign material discharge path is naturally drained through the opening.

A camera module according to an example of the present invention, an elastic member; and a housing to which the elastic member is fastened. a foreign material discharge path recessed in the upper surface of the housing; It is formed on one side of the housing and includes an opening communicating with the foreign material discharge path, and the foreign material discharge path may be located below the elastic member fastened to the housing.

The foreign material discharge path includes a first discharge path and a second discharge path in which the support protrusion of the bobbin is selectively supported, and the second discharge path connects the first discharge path and the opening, and the first discharge path The discharge passage may be provided more recessed.

At least a portion of the first discharge passage and at least a portion of the second discharge passage may be inclined toward the opening.

The foreign material discharge path may further include a connection path connecting the first discharge path and the second discharge path, and the connection path may be located at one end of the first discharge path.

At least a portion of the first discharge path may be inclined toward the connection path, and at least a portion of the second discharge path may be inclined toward the opening.

It may further include a protrusion positioned between the first discharge path and the second discharge path and protruding from the first discharge path to support the elastic member fastened to the elastic member fastening protrusion.

The foreign material discharge path may further include an inclined surface connecting the first discharge path and the second discharge path, and inclined in a direction from the first discharge path to the second discharge path.

The foreign material discharge path may further include a tapered surface connecting the first discharge path and the second discharge path, and tapering from the first discharge path to the second discharge path.

An optical device according to an example of the present invention includes a camera having a main body, a display unit disposed on one surface of the main body to display information, and a camera module installed in the main body to take images or photos, and the camera The module includes a foreign material discharge path recessed in an upper surface to which the elastic member is fastened, and a housing that communicates with the foreign material discharge path and includes an opening provided on one side, and a part of the foreign material discharge path is the opening It may be provided inclined in the direction.

Through the present invention, since it is easy to clean the foreign material located between the elastic member and the housing, the effect of reducing the auto-focusing tilt defect occurring after assembly can be expected.

1 is a perspective view of a camera module according to an example of the present invention.
2 is an exploded perspective view of a camera module according to an example of the present invention.
3 is a partially enlarged perspective view of a housing of a camera module according to an example of the present invention.
4 is a perspective view illustrating a coupling relationship between a housing, a bobbin, and an upper elastic member of a camera module according to an example of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

The "discharge liquid" used hereinafter refers to "foreign substances" such as thread, dust, and metal pieces located in the housing 320, the elastic members 610 and 620, and the like, and the "cleaning liquid" supplied to clean the foreign substances. used to do Either one of the first discharge path 331 and the second discharge path 332 may be referred to as a 'first groove' and the other may be referred to as a 'second groove'.

Hereinafter, the configuration of the optical device according to an example of the present invention will be described in detail.

The optical device according to an example of the present invention may be a mobile phone, a smart phone, a portable smart device, a notebook computer, a digital camera, etc., but is not limited thereto, and any device for taking an image or a picture is possible.

An optical device according to an example of the present invention includes a main body (not shown), a display unit (not shown) disposed on one surface of the main body to display information, and a camera module (not shown) installed in the main body to take images or photos 10) may include a camera (not shown).

Hereinafter, the configuration of the camera module 10 will be described in detail with reference to the drawings.

1 is a perspective view of a camera module according to an example of the present invention, Figure 2 is an exploded perspective view of the camera module according to an example of the present invention.

1 to 2 , the camera module 10 according to an example of the present invention may include a lens driving device. The lens driving device may include a cover can 100 , a first mover 200 , a second mover 300 , a stator 400 , a base 500 , and an elastic unit 600 . In addition, although not shown, the camera module 10 may further include a printed circuit board, an IR filter, an image sensor, and the like.

The cover can 100 accommodates the elastic unit 600 , the first mover 200 , the stator 400 , and the second mover 300 to be described later and is mounted on the base 500 , thereby forming the camera module 10 . shape the appearance. Specifically, the cover can 100 is mounted on the base 500 in close contact with a part or all of the side surface of the base 500 to be described later, and protects internal components from external impacts and at the same time external contamination. It has the function of preventing the penetration of substances.

In addition, the cover can 100 should also perform a function of protecting the components of the camera module 10 from external interference generated by a mobile phone or the like. Accordingly, the cover can 100 may be formed of a metal material.

The cover can 100 may be implemented as a yoke unit itself, or may be fixed by molding the yoke unit on the inside. In one example of the present invention, the upper side of the cover can 100 is formed with an opening 110 through which the lens unit (not shown) is exposed, and the lower end of the upper side of the cover can 100 is bent inside the cover can 100 . An inner yoke (not shown) may be formed. 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 at least one fastening piece 120 extending on each side of the lower end, and a fastening groove 520 into which the fastening piece 120 is inserted in the base 500 to be described later. can be formed. Through this, it is possible to implement a more robust sealing function and fastening function of the camera module 10 .

The first mover 200 may be disposed on a side surface of the lens unit to move the lens unit. The first mover 200 may include a bobbin 210 for fixing the lens unit, and a first coil unit 220 provided on an outer circumferential surface of the bobbin 210 .

The lens unit may be a lens barrel provided with one or more lenses (not shown), but is not limited thereto, and any holder structure capable of supporting the lens may be included.

The inner circumferential surface of the bobbin 210 is coupled to the outer circumferential surface of the lens unit to fix the lens unit. In addition, the bobbin 210 may have a guide part 211 , which guides the winding or mounting of the first coil part 220 , which will be described later, formed on an outer circumferential surface thereof. 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.

In addition, an upper elastic member 610 or a lower elastic member 620 that allows the bobbin 210 to be supported with respect to the upper and lower sides of the housing 320 is fastened to the upper and lower surfaces of the bobbin 210 . An elastic member fastening protrusion 212 may be formed.

In addition, the bobbin 210 has a concave portion formed on the outer peripheral surface so that the inner yoke of the cover can 100 to be described later can be positioned between the bobbin 210 and the first coil unit 220 wound on the bobbin 210 . (213) may be further included.

In addition, the bobbin 210 may be provided with a support protrusion 215 formed on the outer peripheral surface. The support protrusion 215 may be selectively supported at the lower portion by a second discharge path 332 to be described later of the housing 320 . That is, the support protrusion 215 of the bobbin 210 may be supported by the second discharge path 332 of the housing 320 due to the relative flow of the bobbin 210 with respect to the housing 320 . That is, the second discharge path 332 of the housing 320 may limit the movement of the bobbin 210 with respect to the housing 320 through interaction with the support protrusion 215 of the bobbin 210 .

The first coil unit 220 may be guided by the guide unit 211 and wound on the outer surface of the bobbin 210 , but four individual coils 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 second mover 300 is positioned opposite to the first mover 200 on a side surface of the first mover 200 , and a magnet 310 disposed to face the first coil unit 220 , and a magnet It may include a housing 320 to which the 310 is fixed.

Specifically, the magnet 310 is mounted on the housing 320 with an adhesive or the like so as to be disposed at a position corresponding to the outer surface of the first coil unit 220, and is equally spaced at four corners inside the housing 320 . It can be installed to promote efficient use of the internal volume.

The housing 320 may be formed in a shape corresponding to the inner surface of the cover can 100 forming the exterior of the camera module 10 . In addition, the housing 320 is formed of an insulating material, and may be made as an injection molding in consideration of productivity, and the housing 320 is a moving part for driving OIS (Optical Image Stabilization) and is spaced apart from the cover can 100 by a certain distance. and can be placed.

In one example of the present invention, the housing 320 is formed to correspond to the shape of the cover can 100 and may be spaced apart from each other by a certain distance, and the upper and lower sides are opened to move the first mover 200 in the vertical direction. can be accepted In addition, the housing 320 may include a magnet accommodating part 321 formed on a side surface to have a shape corresponding to the magnet 310 to accommodate the magnet 310 .

In addition, at least two stoppers 322 may be formed on the upper surface of the housing 320 to protrude at a predetermined interval to absorb the impact by contacting the upper surface of the cover can 100 in case of an external impact. The stopper 322 may be formed integrally with the housing 320 .

In addition, the elastic member fastening protrusion 323 to which the upper elastic member 610 or the lower elastic member 620 is fastened may be formed on the upper and lower surfaces of the housing 320 , like the bobbin 210 .

The stator 400 may be positioned opposite to the lower side of the second mover 300 to move the second mover 300 . In addition, through holes 411 and 421 corresponding to the lens unit may be formed in the center of the stator 400 .

Specifically, the stator 400 includes a second coil unit 410 positioned opposite to the lower side of the magnet 310, and a substrate with the second coil unit 410 disposed on the upper side to apply power, , the substrate includes a flexible printed circuit board (FPCB, 420).

The second coil unit 410 may be mounted or formed on the FPCB 420 provided on the upper side of the base 500 to be described later, and a through hole 411 may be formed in the center to pass the optical signal of the lens unit. have. On the other hand, in consideration of the miniaturization of the camera module 10 (lowering the height in the z-axis direction, which is the optical axis direction), the second coil unit 410 is formed of an FP coil that is a patterned coil, so that the FPCB may be placed on the

The FPCB 420 may be provided on the upper side of the base 500 to apply power to the second coil unit 410 , and a through hole 421 corresponding to the through hole 411 of the second coil unit 410 . ) is formed. In addition, the FPCB 420 includes a terminal portion 422 having one end or both opposite ends bent and protruding to the lower side of the base 500 , and external power may be supplied through the terminal portion 422 .

In addition, an example of the present invention may further include a Hall sensor unit (not shown) mounted on the lower or upper surface of the FPCB 420 to correspond to the position of the magnet 310 .

The hall sensor unit detects the movement of the magnet 310 and interacts with the FPCB 420 to precisely control the actuator.

The hall sensor unit may be provided on a straight line parallel to the magnet 310 and the optical axis. In addition, since the Hall sensor unit needs to detect displacements in the x-axis and the y-axis, it may include two Hall sensors respectively provided at two adjacent corners of the FPCB 420 . Meanwhile, one or more Hall sensors may be provided. In addition, a hall sensor accommodating groove 540 capable of accommodating the hall sensor may be formed in the base 500 .

Although the hall sensor unit is provided closer to the second coil unit 410 than the magnet 310, considering that the strength of the magnetic field formed in the magnet 310 is several hundred times greater than the strength of the electromagnetic field formed in the coil, the magnet The influence of the second coil unit 410 in detecting the movement of the 310 is not considered.

The lens unit is moved in all directions by the independent or organic interaction of the first mover 200, the second mover, and the stator 400, and the first mover 200 and/or the second mover ( 300), it is possible to focus the image of the subject, and to correct hand shake and the like through the interaction of the first mover 200 and/or the second mover 300 .

Meanwhile, the base 500 supports the stator 400 and the second mover 300 , and a hollow hole 510 corresponding to the through holes 411 and 421 is formed in the center.

The base 500 may function as a sensor holder to protect an image sensor (not shown), which will be described later, and may be provided to position an IR filter (not shown).

In this case, the IR filter may be mounted in the hollow hole 510 formed in the center of the base 500, and an infrared filter may be provided. In addition, the IR filter may be formed of, for example, a film material or a glass material, and an infrared blocking coating material may be disposed on a plate-shaped 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 500 .

In addition, the base 500 may be formed with one or more fixing protrusions 530 protruding from the upper corner to contact or combine with the inner surface of the cover can 100 , and the fixing protrusions 530 are the cover cans 100 . It facilitates the fastening of the device and at the same time makes it possible to achieve a firm fixation after fastening.

In addition, the base 500 may be formed with a fastening groove 520 into which the fastening piece 120 of the cover can 100 is inserted. This fastening groove 520 is formed locally on the outer surface of the base 500 in a shape corresponding to the length of the fastening piece 120 , or a predetermined portion of the lower end of the cover can 100 including the fastening piece 120 is inserted. It may be formed entirely on the outer surface of the base 500 so that the

Here, foreign substances may enter through the through holes 411 and 421 and the hollow hole 510 of the stator 400 and the base 500, and these foreign substances are various elements mounted on the printed circuit board provided on the lower side, The performance of the camera module 10 may be deteriorated by contaminating the image sensor and the like. In particular, when an OIS (Optical Image Stabilization) function is provided, the FP coil and/or the FPCB 420 are used, and the through-holes 411 and 421 are formed in the central part, and the shape according to the camera module 10 is other. is processed, a lot of foreign matter is generated by such processing, and even after cleaning after processing, there may be a problem because the foreign material remains.

Accordingly, an example of the present invention includes a seating protrusion 550 protruding from the upper surface of the base 500 in which the hollow hole 510 is formed.

Specifically, the seating protrusion 550 is inserted into the through-holes 411 and 421 of the stator 400 and is formed to surround the inner peripheral surface of the through-holes 411 and 421 of the stator 400 . The seating protrusion 550 may have a diameter equal to or smaller than the inner circumferential surface of the through-holes 411 and 421 of the stator 400 .

In addition, the seating protrusion 550 may be formed integrally with the base 500, and is formed to protrude in the shape of a circular rim as shown, or at least two or more protrusions are formed to protrude at equal intervals or at predetermined intervals. can be

In addition, in order to prevent the occurrence of foreign matter from the stator 400 and to securely mount the stator 400 , an example of the present invention may further include the following features.

At least two adhesive grooves 560 formed in the outer direction of the seating protrusion 550 are formed on the upper surface of the base 500, and the stator 400 has a concave groove formed at a position corresponding to the adhesive groove 560 ( 413, 423) may be formed.

That is, the concave grooves 413 and 423 are formed to correspond to the second coil unit 410 and the FPCB 420, respectively, and are arranged outside of each of the through holes 411 and 421 to form a small circular hole shape. can be formed.

When the stator 400 is mounted on the base 500 and the adhesive is injected into the recessed grooves 413 and 423 , the adhesive introduced into the recessed grooves 413 and 423 is the outer peripheral surface of the seating protrusion 550 and the stator 400 . ) is introduced between the inner peripheral surfaces of the through-holes 411 and 421 to suppress the generation of any more foreign matter and to make the mounting of the stator 400 firm, and the adhesive is introduced into the lower side and formed in the base 500 ( 560) to enable a more robust installation.

In addition, a dust trap may be formed in the periphery of the through hole 510 on the upper surface of the base, and may be formed of epoxy or the like. The dust trap may be formed around a circle having a larger diameter than the through hole, and may be formed in various shapes such as a square shape. The seating protrusion and the dust trap may be formed together, and it is also possible that only one of the two is formed.

The camera module 10 according to an example of the present invention further includes an elastic unit 600 for providing a return force to the first mover 200 and the second mover 300, and the elastic unit 600 For the efficiency of silver production and the miniaturization of the camera module 10, a single plate may be made of a bent and cut plate spring.

The elastic unit 600 includes a lower elastic member 620 fastened to the lower surface of the bobbin 210 and the housing 320 , and an upper elastic member 610 fastened to the upper surface of the bobbin 210 and the housing 320 . ) and a side elastic member 630 that is fastened to elastically support the housing 320 with respect to the base 500 .

Two of the side elastic members 630 receive power from a printed circuit board (not shown) to be described later and deliver it to the upper elastic member 610 , and the upper elastic member 610 supplies the transmitted power back to the first coil unit. In order to transmit to 220 , the two side elastic members 630 , the upper elastic member 610 and the first coil unit 220 may be electrically connected. At this time, the upper elastic member 610 may also be composed of two, each may function as two terminals.

In other words, the upper, lower, and side elastic members 610 , 620 , and 630 may be formed of a first coupling part and a second coupling part and a connection part connecting the first coupling part and the second coupling part, respectively, and the connection part may be implemented as at least two or more bending parts to connect the first fastening part and the second fastening part. Here, the first coupling portion of the upper elastic member 610 and the lower elastic member 620 may be a portion coupled to the housing, and the second coupling portion may be a portion coupled to the bobbin, and vice versa. On the other hand, the side elastic member 630 is for elastically supporting the housing 320 with respect to the base 500, and the first and second coupling parts are coupled to the housing 320 and the base 500, respectively. Alternatively, the upper elastic member 610 and the base 500 coupled to the housing 320 may be coupled to each other.

In addition, the camera module 10 according to the present invention may further include a printed circuit board (not shown), and the printed circuit board may be mounted under the base 500 . An image sensor (not shown) is mounted on the central portion of the upper side of the printed circuit board, and various elements (not shown) for driving the camera module 10 may be mounted. In addition, the printed circuit board may be electrically connected to the above-described side elastic member 630 in order to apply power for driving the above-described first mover 200 .

The image sensor (not shown) may be mounted on the central portion of the upper side of the printed circuit board so as to be positioned along the optical axis direction with one or more lenses (not shown) accommodated in the lens unit. Such an image sensor converts an optical signal of an object incident through a lens into an electrical signal.

On the other hand, the adhesive disclosed in an example of the present invention may be implemented as a thermosetting epoxy or UV epoxy, and is cured by exposure to heat or UV. However, when a thermosetting epoxy is used, it is cured by moving to an oven or by applying direct heat, and when using a UV (ultraviolet) epoxy, it is a method of curing by applying UV (ultraviolet rays) to the adhesive.

In addition, the adhesive may be an epoxy in which thermal curing and UV (ultraviolet ray) curing can be mixed, and both thermal curing and UV (ultraviolet ray) curing are possible, so it may be an epoxy that can be cured by selecting any one of them. The adhesive is not limited to the epoxy, and any material that can be adhered to may be substituted.

On the other hand, the camera module 10 according to an example of the present invention may further include a foreign material discharge path 330 formed so that the discharge liquid positioned between the elastic member 610 and the housing 320 is naturally drained. Hereinafter, the configuration of the foreign material discharge path 330 will be described in detail with reference to the drawings.

3 is a partially enlarged perspective view of a housing of a camera module according to an example of the present invention, and FIG. 4 is a perspective view illustrating a coupling relationship between a housing, a bobbin, and an upper elastic member of the camera module according to an example of the present invention.

3 and 4 , the housing 320 according to an example of the present invention may include a foreign material discharge path 330 , an opening 340 , and a protrusion 350 . Meanwhile, the housing 320 may be described as including the foreign material discharge path 330 , the opening 340 , and the protrusion 350 .

In addition, the housing 320 may include an elastic member fastening protrusion 323 . Elastic members 610 and 620 may be fastened to the elastic member fastening protrusion 323 . The elastic member fastening protrusion 323 may be provided to protrude upward from the upper surface 325 of the housing 320 as an example. The elastic member fastening protrusion 323 may be provided to have a circular cross section, but is not limited thereto, and may be provided in any shape to which the elastic members 610 and 620 can be fastened. Hereinafter, for convenience of explanation, the structure in which the upper elastic member 610 is fastened to the elastic member fastening protrusion 323 of the housing 320 will be mainly described, but the lower elastic member 620 to the elastic member fastening protrusion 323 is The analogy can also be applied to the fastened structure.

The foreign material discharge path 330 may be located on one side of the upper elastic member 610 fastened to the elastic member fastening protrusion 323 . As an example, the foreign material discharge path 330 may be located under the upper elastic member 610 coupled to the housing 320 as shown in FIG. 4 . In addition, the foreign material discharge path 330 may be provided recessed in the upper surface 325 of the housing 320 . In other words, the foreign material discharge path 330 may be formed lower than the upper surface 325 of the housing 320 . Meanwhile, the foreign material discharge path 330 may communicate with an opening 340 to be described later. In this case, at least a portion of the foreign material discharge path 330 may be inclined in the direction of the opening 340 . In an example of the present invention, through such a structure, the discharge liquid located in the foreign material discharge path 330 may be naturally drained through the opening 340 . Meanwhile, compressed air (air, air) may be injected into the foreign material discharge path 330 through an air compressor (not shown). ) may be discharged to the opening 340 together with the foreign material located on the top.

In addition, the foreign material discharge path 330 may include a first discharge path 331 , a second discharge path 332 , and a connection path 333 . At this time, since the second discharge path 332 is configured to selectively support the support protrusion 215 of the bobbin 210, it may be referred to as a “support groove”.

The first discharge path 331 may be provided recessed in the upper surface 325 of the housing 320 . In addition, the first discharge path 331 may be located directly below the upper elastic member 610 fastened to the housing 320 . Meanwhile, the first discharge path 331 may communicate with the opening 340 through the second discharge path 332 . That is, the discharge liquid on the first discharge path 331 may be discharged to the opening 340 through the second discharge path 332 .

The second discharge path 332 may also be recessed in the upper surface 325 of the housing 320 like the first discharge path 331 . In addition, the second discharge path 332 may be located directly below the upper elastic member 610 fastened to the housing 320 . Meanwhile, the second discharge path 332 may selectively support the support protrusion 215 of the bobbin 210 . Through this, the flow to the lower portion of the bobbin 210 with respect to the housing 320 may be limited within a certain range. Meanwhile, the second discharge path 332 may communicate the first discharge path 331 and the opening 340 . Through this structure, as described above, the discharge liquid on the first discharge path 331 may be discharged to the opening 340 through the second discharge path 332 , and the discharge liquid on the second discharge path 332 . Silver may be directly discharged through the opening 340 . In this case, the second discharge path 332 may be provided to be recessed than the first discharge path 331 . In addition, at least a portion of the first discharge passage 331 and at least a portion of the second discharge passage 332 may be formed to be inclined in the direction of the opening 340 . Through this structure, the discharged liquid on the first discharge path 331 is naturally drained to the opening 340 through the second discharge path 332 , and the discharged liquid on the second discharge path 332 is discharged through the opening 340 . can be directly drained naturally.

The connection path 333 may connect the first discharge path 331 and the second discharge path 332 . The connection path 333 may be located at one end of the first discharge path 331 as shown in FIG. 3 as an example. Through such a structure, a vortex does not occur in the discharge liquid flowing from the first discharge path 331 to the second discharge path 332 , so the discharge liquid from the first discharge path 331 to the second discharge path 332 . This can be easily discharged.

Meanwhile, at least a portion of the first discharge path 331 may be inclined in the direction of the connection path 333 , and at least a portion of the second discharge path 332 may be inclined in the direction of the opening 340 . Through this structure, the discharged liquid on the first discharge path 331 is naturally drained to the opening 340 through the second discharge path 332 , and the discharged liquid on the second discharge path 332 is discharged through the opening 340 . can be directly drained naturally.

In addition, the connection path 333 may include, for example, an inclined surface (not shown) inclined in a direction from the first discharge path 331 to the second discharge path 332 . Here, the inclined surface only means a surface having an inclination, and the inclination of the inclined surface does not need to be constant or more than or less than a predetermined angle. In other words, the inclined surface functioning as the connecting passage 333 connecting the first discharge passage 331 and the second discharge passage 332 may have an inconsistent angle, and the angle of the inclined surface may be extremely small or extremely steep. can be provided. That is, the inclined surface naturally drains the discharge liquid of the first discharge path 331 to the second discharge path 332 and prevents the discharge liquid from the second discharge path 332 from flowing back into the first discharge path 331 . If it functions, it may be provided with a surface having any shape of inclination.

Meanwhile, the connection path 333 may include, for example, a tapered surface (not shown) that is tapered from the first discharge path 331 to the second discharge path 332 . The tapered surface is also very similar in function to the above-described inclined surface. That is, the tapered surface naturally drains the liquid discharged from the first discharge path 331 to the second discharge path 332 and prevents the discharge liquid from the second discharge path 332 from flowing back into the first discharge path 331 . function However, the tapered surface is different from the inclined surface in that the angle of the inclination from the first discharge path 331 to the second discharge path 332 is uniformly provided, unlike the inclined surface.

The opening 340 may communicate with the foreign material discharge path 330 . Through this, the liquid discharged from the foreign material discharge path 330 may be discharged through the opening 340 . Also, the opening 340 may be formed on one side of the housing 320 . The opening 340 may be formed in the inner surface 326 of the housing 320 as shown in FIG. 3 as an example. Even in this case, the opening 340 may communicate with the foreign material discharge path 330 to function as a discharge port for the discharged liquid. As an example, the opening 340 may have an open top as shown in FIG. 3 , but is not limited thereto, and any shape is possible as long as it functions as an outlet through which the discharged liquid can be discharged. Meanwhile, the opening 340 may provide a space for the support protrusion 215 of the bobbin 210 to flow vertically.

The protrusion 350 is located between the first discharge path 331 and the second discharge path 332 , and protrudes from the first discharge path 331 to support the upper elastic member 610 coupled to the housing 320 . can do. Accordingly, the protrusion 350 may be located directly below the upper elastic member 610 coupled to the housing 320 . However, it is not necessary that the protrusion 350 and the upper elastic member 610 always maintain a contact state, and the protrusion 350 and the upper elastic member 610 may contact according to the flow of the upper elastic member 610 . may be Meanwhile, the protrusion 350 may form a shape of the second discharge path 332 in which the support protrusion 215 of the bobbin 210 is selectively supported. The shape of the second discharge path 332 formed by the protrusion 350 may correspond to the shape of the support protrusion 215 of the bobbin 210 .

Meanwhile, a coupling structure of the housing 320 , the foreign material discharge path 330 , the upper elastic member 610 , and the bobbin 210 will be described below with reference to FIG. 4 . The upper elastic member 610 is coupled to the elastic member fastening protrusion 323 of the housing 320 and the elastic member fastening protrusion 212 of the bobbin 210 . That is, the housing 320 and the bobbin 210 are coupled by an upper elastic member 610 having elasticity. Through such a structure, the bobbin 210 can move relative to the housing 320 . However, since the support protrusion 215 of the bobbin 210 is selectively supported by the second discharge path 332 of the housing 320, the relative flow of the bobbin 210 with respect to the housing 320 is to be limited within a certain range. can On the other hand, a foreign material discharge path 330 formed by the depression of the upper surface 325 of the housing 320 is located at the lower portion of the upper elastic member 610 . In addition, the protrusion 350 formed to protrude from the foreign material discharge path 330 may support the upper elastic member 610 . At this time, as described above, the protrusion 350 may selectively support the upper elastic member 610 according to the flow of the upper elastic member 610 .

Hereinafter, the operation of the camera module according to an example of the present invention will be described in detail with reference to the drawings.

First, as shown in FIG. 4 , it is assumed that the upper elastic member 610 is coupled to the bobbin 210 and the housing 320 . However, the description below can be analogously applied to a situation in which the upper elastic member 610 is coupled to the housing 320 and the bobbin 210 is not coupled.

Foreign substances such as thread, dust, and metal pieces are interposed between the upper elastic member 610 and the housing 320 . In this case, the operator must essentially perform the foreign matter removal operation. This is because, when the assembly operation of the camera module 10 is completed in a state in which the foreign material is included, the foreign material affects the upper elastic member 610 and causes an auto-focusing tilt defect.

Thereafter, the operator sprays the cleaning solution to the upper elastic member 610 and the housing 320 . The sprayed cleaning liquid is mixed with the foreign material, and the cleaning liquid mixed with the foreign material is referred to as the discharged liquid as described above.

On the other hand, the discharged liquid flows downward under the influence of gravity over time. Accordingly, the discharge liquid on the upper elastic member 610 is introduced into the foreign material discharge path 330 located at the bottom.

Thereafter, the discharge liquid on the foreign material discharge path 330 flows from the first discharge path 331 to the second discharge path 332 along the inclined connection path 333 (see FIGS. 3A and 3B ). Meanwhile, the discharged liquid flowing to the second discharge path 332 is discharged through the opening 340 (see C of FIG. 3 ).

In an example of the present invention, it is possible to remove foreign substances located between the upper elastic member 610 and the housing 320 only by such an operation.

In the above, even though it has been described that all the components constituting the embodiment of the present invention operate by being combined or combined into one, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Commonly used terms such as terms defined in the dictionary should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: camera module
100: cover can
200: first mover
300: second mover
400: stator
500: base
600: elastic unit

Claims (20)

Base;
a housing disposed on the base;
a bobbin movably disposed in the housing in an optical axis direction;
a first coil disposed on the bobbin;
a second coil disposed on the base;
a magnet disposed in the housing and interacting with the first coil and the second coil;
and an upper elastic member connecting the housing and the bobbin,
The first fastening portion of the upper elastic member is disposed on the upper surface of the housing,
The bobbin includes a support protrusion protruding outward than the first coil,
The housing includes a first groove recessed in the upper surface of the housing, and a second groove formed in the upper surface of the housing and recessed further than the first groove,
The support protrusion of the bobbin is disposed on the second groove of the housing such that at least a part thereof overlaps the second groove of the housing in the optical axis direction. According to claim 1,
The first groove of the housing is disposed outside the second groove of the housing. According to claim 1,
The first groove of the housing is connected to the second groove of the housing. 4. The method of claim 3,
The housing includes a connection path for obliquely connecting the first groove and the second groove. According to claim 1,
The second groove of the housing is opened inwardly. According to claim 1,
The discharge liquid injected into the first groove of the housing flows along the first groove to the second groove and is disposed inwardly. According to claim 1,
At least a portion of the first groove of the housing is inclined downward toward the second groove of the housing. According to claim 1,
At least a portion of the second groove of the housing is inclined downward inward. According to claim 1,
The upper elastic member includes a second fastening part coupled to the bobbin, and a connecting part connecting the first fastening part and the second fastening part,
The second groove of the housing overlaps the connection part of the upper elastic member in the optical axis direction. According to claim 1,
The housing includes an elastic member fastening protrusion formed to protrude from the upper surface of the housing and coupled to the upper elastic member. According to claim 1,
a substrate disposed on the base;
and the second coil is disposed on the substrate. According to claim 1,
and a side elastic member for movably supporting the housing with respect to the base. According to claim 1,
and a cover can disposed on the base and accommodating the housing therein. According to claim 1,
When the bobbin moves downward in the optical axis direction, the support protrusion of the bobbin and the second groove of the housing contact each other. Base;
a housing disposed on the base;
a bobbin movably disposed in the housing in an optical axis direction;
a first coil disposed on the bobbin;
a second coil disposed on the base;
a magnet disposed in the housing and interacting with the first coil and the second coil;
and an upper elastic member connecting the housing and the bobbin,
The bobbin includes a support protrusion protruding outward than the first coil,
The housing includes a first groove recessed in the upper surface of the housing, and a second groove formed in the upper surface of the housing and recessed further than the first groove,
The support protrusion of the bobbin is disposed on the second groove of the housing such that at least a part thereof overlaps the second groove of the housing in the optical axis direction,
The first groove of the housing and the second groove of the housing are connected to each other. 16. The method of claim 15,
The upper elastic member includes a first fastening part disposed on the upper surface of the housing, a second fastening part coupled to the bobbin, and a connecting part connecting the first fastening part and the second fastening part. . 16. The method of claim 15,
The first groove of the housing is disposed outside the second groove of the housing. printed circuit board;
an image sensor disposed on the printed circuit board;
The lens driving device of any one of claims 1 to 17; and
A camera module including a lens coupled to the bobbin of the lens driving device. An optical device comprising the camera module of claim 18 . Base;
a housing disposed on the base;
a bobbin movably disposed in the housing in an optical axis direction;
a first coil disposed on the bobbin;
a second coil disposed on the base; and
and a magnet disposed in the housing and interacting with the first coil and the second coil.

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