KR20220066034A - Lens driving device, camera module and optical apparatus - Google Patents

Abstract

The present invention relates to a lens driving device, camera module, and optical device. According to an embodiment of the present invention, the lens driving device comprises: a cover; a housing placed in the cover; a bobbin placed in the housing; a coil placed on the outer circumferential surface of the bobbin; a first magnet placed on the housing and facing the coil; and a base placed under the housing and including a first protruding unit protruding upward. The cover includes: an upper plate; and side plates extended from edges of the upper plate toward a lower side. The side plates include: a first corner unit; a first side plate placed on one side of the first corner unit; and a second side plate placed on the other side of the first corner unit. The housing includes: a first side unit facing the first side plate; a second side unit facing the second side plate; a first rib connecting the first side unit and the second side unit; and a second rib. The first rib is placed apart upward from the second rib. The first magnet is placed between the first rib and the second rib. The first rib protrudes more than the second rib toward the first corner unit. The first protruding unit has an upper surface facing a lower surface of the first rib, and has side surfaces facing the first side plate, the second side plate, the first corner unit, and the first magnet. The camera module includes the lens driving device. The optical device includes the camera module. The present invention aims to provide the lens driving device which is capable of having a compact and stable structure.

Description

LENS DRIVING DEVICE, CAMERA MODULE AND OPTICAL APPARATUS

This embodiment relates to a lens driving device, a camera module, and an optical device.

The content described below provides background information on the present embodiment and does not describe the prior art.

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

Among them, there is a camera module that takes a picture or video of a subject as a representative one. Recently, a camera module having an autofocus function, which is a function of automatically adjusting a focus according to a distance of a subject, has appeared.

Meanwhile, the autofocus function may be performed by the lens driving device. A lens driving device requires various parts such as a coil and a magnet that generate electromagnetic force, and a cover, a housing, a bobbin, and a base that are support members.

However, in a general lens driving device, the magnet and the housing are not stably fixed, so there is a problem in that the autofocus function cannot be properly performed.

Korean Patent Publication No. 10-2016-0073843 (published on June 27, 2016) Korean Patent Publication No. 10-2016-0112489 (published on September 28, 2016)

An object of the present embodiment is to provide a lens driving device capable of stably fixing a magnet and a housing.

The lens driving device of this embodiment includes a cover; a housing disposed inside the cover; a bobbin disposed inside the housing; a coil disposed on an outer circumferential surface of the bobbin; a first magnet disposed in the housing and facing the coil; It is disposed under the housing and includes a base including a first protrusion protruding upward, and the cover includes an upper plate and a side plate extending downward from an edge of the upper plate, and the side plate includes a first corner part and , a first side plate disposed on one side of the first corner part and a second side plate disposed on the other side of the first corner part, wherein the housing includes a first side part facing the first side plate, the second side plate and a second side opposite to each other, a first rib connecting the first side and the second side, and a second rib, wherein the first rib is disposed to be spaced apart from the second rib, and the first The rib protrudes in a direction in which the first corner portion is located rather than the second rib, the first magnet is disposed between the first rib and the first rib, and an upper surface of the first protrusion is opposite to the first rib and side surfaces may be disposed to face the first side plate, the second side plate, the first corner part, and the first magnet.

Between the upper surface of the first protrusion and the first rib, between the side surface of the first protrusion and the first magnet, between the side surface of the first protrusion and the first side plate, the side surface of the first protrusion and the An adhesive may be applied between at least one of the second side plates.

At least a portion of the first rib and the first protrusion may overlap in the optical axis direction, and the second rib and the first protrusion may not overlap in the optical axis direction.

The first rib includes a first chamfered surface facing the first corner portion, the second rib includes a second chamfered surface facing the first corner portion, and at the center of the first chamfered surface The shortest distance to the inner surface of the edge of the first corner portion may be shorter than the shortest distance from the center of the second chamfer to the inner surface of the edge of the first corner portion.

The coil is located below the outer circumferential surface of the bobbin, the bobbin includes a first stopper disposed below the coil on the outer circumferential surface, and the housing is disposed on the first side, at least a portion of the first stopper and a first accommodating part having a groove or hole shape, wherein the first stopper protrudes in a direction in which the first side plate is located, and by the first stopper and the first accommodating part, the optical axis is Rotation of the bobbin may be blocked.

The bobbin includes a first stopper disposed under the coil on an outer circumferential surface, the base protrudes upward, and includes a first blocking protrusion at least partially overlapping with the first stopper in an optical axis direction, the first A stopper may protrude in a direction in which the first side plate is located, and downward movement of the bobbin may be blocked by the first stopper and the first blocking protrusion.

The base may be disposed under the cover, and an adhesive may be disposed between the side plate of the cover and the base.

The base includes a first extension that protrudes upward and extends to one side from the first protrusion, and a second extension that protrudes upward and extends from the first protrusion to the other side, and includes an outer surface of the first extension and the second extension. An inner surface of the first side plate may be opposite to each other, and an outer surface of the second extension part may be opposed to an inner surface of the second side plate.

The lens driving device of this embodiment includes a cover; a housing disposed inside the cover; a bobbin disposed inside the housing; a coil disposed on an outer circumferential surface of the bobbin; a magnet disposed in the housing and facing the coil; a base disposed under the housing and including a protrusion protruding upward, wherein the housing includes a first rib and a second rib positioned below the first rib, and the magnet includes the first rib and the second rib, the protrusion may overlap the first rib in a vertical direction, and may not overlap the second rib and the magnet in a vertical direction.

The camera module of this embodiment includes a lens driving device; a lens module disposed on the lens driving device; a substrate disposed under the lens driving device; and an image sensor disposed on the substrate and aligned with an optical axis of the lens module, wherein the lens driving device includes: a cover; a housing disposed inside the cover; a bobbin disposed inside the housing and on which the lens module is disposed; a coil disposed on an outer circumferential surface of the bobbin; a first magnet disposed in the housing and facing the coil; a base disposed under the housing and including a first protrusion protruding upward, wherein the cover includes a top plate and a side plate extending downwardly from an edge of the top plate, and the side plate includes a first corner part and , a first side plate disposed on one side of the first corner part and a second side plate disposed on the other side of the first corner part, wherein the housing includes a first side part facing the first side plate, and the second side plate; a second side opposite to each other, a first rib connecting the first side and the second side, and a second rib, wherein the first rib is disposed to be spaced apart from the second rib, and the first A magnet is disposed between the first rib and the second rib, the first rib protrudes in a direction in which the first corner part is located rather than the second rib, and the first protrusion part has an upper surface and a lower surface of the first rib. and the side surfaces may be disposed to face the first side plate, the second side plate, the first corner part, and the first magnet.

The optical device of this embodiment includes a main body; a display unit located on one side of the body; and a camera module electrically connected to the display unit, wherein the camera module includes: a lens driving device; a lens module disposed on the lens driving device; a substrate disposed under the lens driving device; and an image sensor disposed on the substrate and aligned with an optical axis of the lens module, wherein the lens driving device includes: a cover; a housing disposed inside the cover; a bobbin disposed inside the housing and on which the lens module is disposed; a coil disposed on an outer circumferential surface of the bobbin; a first magnet disposed in the housing and facing the coil; a base disposed under the housing and including a first protrusion protruding upward, wherein the cover includes a top plate and a side plate extending downwardly from an edge of the top plate, and the side plate includes a first corner part and , a first side plate disposed on one side of the first corner part and a second side plate disposed on the other side of the first corner part, wherein the housing includes a first side part facing the first side plate, and the second side plate; a second side opposite to each other, a first rib connecting the first side and the second side, and a second rib, wherein the first rib is disposed to be spaced apart from the second rib, and the first A magnet is disposed between the first rib and the second rib, the first rib protrudes in a direction in which the first corner part is located rather than the second rib, and the first protrusion part has an upper surface and a lower surface of the first rib. and the side surfaces may be disposed to face the first side plate, the second side plate, the first corner part, and the first magnet.

In the lens driving device of the present embodiment, the upper end of the first protrusion protruding from the base like a column is adhered to the 1-1 rib of the housing. In addition, the side surface of the first protrusion is adhered to the side surface of the first magnet. That is, the first protrusion of the base may fix both the housing and the first magnet. As a result, the lens driving device of the present embodiment may have a compact and stable structure.

1 is a perspective view showing a lens driving device according to a first embodiment of the present invention.
2 is an exploded perspective view showing the lens driving device according to the first embodiment.
3 is a cross-sectional view illustrating the lens driving device according to the first exemplary embodiment taken along line AA′.
4 is a cross-sectional view illustrating the lens driving device according to the first embodiment of the present invention taken along line BB'.
5 is a perspective view showing the cover of the first embodiment.
6 is a perspective view showing the housing and the magnet of the first embodiment.
7 is a perspective view illustrating a first elastic member, a bobbin, a coil, and a second elastic member according to the first embodiment.
8 is a perspective view showing the base of the first embodiment.
9 is a plan view showing a coil and a magnet according to the first embodiment.
Fig. 10 is a perspective view showing the lens driving device according to the second embodiment.
11 is an exploded perspective view showing the lens driving device according to the second embodiment.
12 is a cross-sectional view showing the lens driving device according to the second embodiment taken along the line A-A'.
13 is a cross-sectional view showing the lens driving device according to the second embodiment taken along the line B-B'.
14 is a perspective view showing the cover of the second embodiment.
15 is a perspective view showing a magnet and a housing of the second embodiment.
16 is a perspective view showing the base of the second embodiment.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the reference numerals for the components of each drawing, the same components are denoted by the same reference numerals as much as possible even if they are displayed 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 elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When a component is described as being “connected”, “coupled” or “connected” to another component, the component may be directly connected, coupled, or connected to the other component, but the component and the other component It should be understood that another element may be “connected”, “coupled” or “connected” between elements.

The “optical axis direction” used below is defined as the optical axis direction of the lens module coupled to the lens driving device. Meanwhile, "optical axis direction" may be used interchangeably with the vertical direction and the vertical direction.

The "autofocus function" used hereinafter refers to a method of focusing on a subject by adjusting the distance from the image sensor by moving the lens module in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. defined as a function. Meanwhile, “auto focus” may be used interchangeably with “AF (Auto Focus)”.

Hereinafter, the configuration of the optical device according to the present embodiment will be described. The optical device according to this embodiment is a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) ), navigation, etc., but is not limited thereto, and any device for taking an image or photo is possible.

The optical device according to the present embodiment includes a main body (not shown), a display unit (not shown) disposed on one surface of the main body to display information, and a display unit installed in the main body to take images or photos and electrically connected to the display unit It may include a camera module (not shown).

Hereinafter, the configuration of the camera module according to the present embodiment will be described. The camera module of this embodiment may include a lens driving device 1000, a lens module, an infrared cut filter (not shown), a substrate (not shown), an image sensor (not shown), and a controller (not shown).

The lens module may include a lens and a lens barrel. The lens module may include one or more lenses (not shown) and a lens barrel accommodating the one or more lenses. However, one configuration of the lens module is not limited to the lens barrel, and any holder structure capable of supporting one or more lenses may be used. The lens module may be coupled to the lens driving device 1000 and move together with the lens driving device 1000 . The lens module may be coupled to the inside of the lens driving device 1000 as an example. The lens module may be screw-coupled to the lens driving device 1000 as an example. As an example, the lens module may be coupled to the lens driving device 1000 by an adhesive (not shown). Meanwhile, the light passing through the lens module may be irradiated to the image sensor.

The infrared cut filter may block light in the infrared region from being incident on the image sensor. The infrared cut filter may be positioned between the lens module and the image sensor, for example. The infrared cut filter may be located on a holder member (not shown) provided separately from the base 800 . However, the infrared filter may be mounted in a hole formed in the center of the base 800 . The infrared filter may be formed of, for example, a film material or a glass material. As an example, the infrared filter may be formed by coating an infrared blocking coating material on a flat optical filter such as a cover glass for protecting an imaging surface or a cover glass.

The substrate may be a printed circuit board (PCB). The substrate may support the lens driving device 1000 . An image sensor may be mounted on the substrate. As an example, an image sensor may be positioned inside the upper surface of the substrate, and a sensor holder (not shown) may be positioned outside the upper surface of the substrate. The lens driving device 1000 may be positioned above the sensor holder. Alternatively, the lens driving device 1000 may be positioned outside the upper surface of the substrate, and the image sensor may be positioned inside the upper surface of the substrate. Through such a structure, light passing through the lens module accommodated inside the lens driving apparatus 1000 may be irradiated to the image sensor mounted on the substrate. The substrate may supply power to the lens driving device 1000 . Meanwhile, a control unit for controlling the lens driving apparatus 1000 may be located on the substrate.

The image sensor may be mounted on a substrate. The image sensor may be positioned so that the lens module and the optical axis coincide. Through this, the image sensor may acquire the light passing through the lens module. The image sensor may output the irradiated light as an image. The image sensor may be, for example, a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID. However, the type of the image sensor is not limited thereto.

The control unit may be mounted on the substrate. The control unit may be located outside the lens driving device 1000 . However, the control unit may be located inside the lens driving apparatus 1000 . The controller may control the direction, intensity, and amplitude of current supplied to each of the components constituting the lens driving apparatus 1000 . The controller may control the lens driving apparatus 1000 to perform an autofocus function of the camera module. That is, the controller may control the lens driving apparatus 1000 to move the lens module in the optical axis direction.

The present lens driving apparatus 1000 has a first embodiment and a second embodiment. First, the lens driving apparatus 1000 according to the first embodiment will be described with reference to the drawings. 1 is a perspective view showing a lens driving device according to the first embodiment, FIG. 2 is an exploded perspective view showing the lens driving device according to the first embodiment, and FIG. 4 is a cross-sectional view taken along line B-B' of the lens driving device of the first embodiment, FIG. 5 is a perspective view of the cover of the first embodiment, and FIG. 6 is the housing of the first embodiment and a magnet, Figure 7 is a perspective view showing a first elastic member, a bobbin, a coil, and a second elastic member of this first embodiment, Figure 8 is a perspective view showing the base of this first embodiment, Figure 9 is It is a plan view showing the coil and the magnet of the first embodiment.

In the lens driving device 1000 of the first embodiment, the bobbin 400 is elastically supported by the housing 200 in the vertical direction, and the first driving unit 300 disposed on the bobbin 400 and the housing 200 are disposed Due to the electromagnetic interaction of the second driving unit 500 , the bobbin 400 may move in the vertical direction (optical axis direction). In this case, the lens module may move in the vertical direction (optical axis direction) integrally with the bobbin 400 . As a result, the auto focus function can be performed.

The lens driving device 1000 of the present embodiment includes a cover 100 , a housing 200 , a first driving unit 300 , a bobbin 400 , a second driving unit 500 , a first elastic member 600 , and a second elastic member. It may include a member 700 and a base 800 . The first driving unit 300 may be a “magnet” or a “coil” according to electromagnetic design conditions. The second driving unit 500 may be a “magnet” or a “coil” according to electromagnetic design conditions. If the first driving unit 300 is a “magnet”, the second driving unit 500 may be a “coil”. If the first driving unit 300 is a “coil”, the second driving unit 500 may be a “magnet”. Accordingly, two cases exist, but hereinafter, it is assumed that the first driving unit 300 is the “magnet 300” and the second driving unit 500 is the “coil 500”. In other cases, the case in which the first driving unit 300 is the “magnet 300” and the second driving unit 500 is the “coil 500” may be applied by analogy.

The cover 100 may be an exterior member of the lens driving device 1000 . The housing 200, the first driving unit 300, the bobbin 400, the second driving unit 500, the first elastic member 600 and the second elastic member 700 may be disposed inside the cover 100. there is. A base 800 may be disposed under the cover 100 .

The cover 100 may include a metal material. The cover 100 may block electromagnetic waves from being introduced from the outside to the inside or from being emitted from the inside to the outside. Accordingly, the cover 100 may be referred to as a “shield can”. However, the material of the cover 100 is not limited thereto. For example, the cover 100 may include a plastic material.

The cover 100 may include a top plate 110 and a side plate 120 . The side plate 120 includes a first side plate 121 , a second side plate 122 , a third side plate 123 , a fourth side plate 124 , a first corner part C1-1, and a second corner part C1- 2), a third corner portion C1-3 and a fourth corner portion C1-4 may be included. The first side plate 121, the second side plate 122, the third side plate 123, the fourth side plate 124, the first corner part C1-1, the second corner part C1-2, the third The corner portion C1-3 and the fourth corner portion C1-4 may be integrally formed.

The upper plate 110 may be in the form of a square plate with rounded corners. A hole aligned with the optical axis may be formed in the center of the upper plate 110 . The side plate 120 may extend downward from the edge of the top plate 110 . Accordingly, the cover 100 may have a rectangular shape with a hole formed on the upper surface, an open lower surface, and rounded corners. The lower opening of the cover 100 may be closed by the base 800 .

The first side plate 121 , the second side plate 122 , the third side plate 123 , and the fourth side plate 124 may have a substantially rectangular plate shape. The first side plate 121 may face and parallel the third side plate 123 . The second side plate 122 and the fourth side plate 124 may face each other and may be disposed in parallel. The second side plate 122 and the fourth side plate 124 may be disposed between the first side plate 121 and the third side plate 123 , and vice versa.

Two grooves or holes in which the first terminal 740 - 1 and the second terminal 740 - 2 of the second elastic member are disposed may be formed at the lower end of the third side plate 123 . Although only one groove or hole 123 - 1 is illustrated in the drawing, another groove or hole spaced therefrom may exist. The two grooves or holes of the third side plate 123 may be in the shape of an upward cut in the lower end of the third side plate 123, through which the first terminal 740-1 and the second terminal 740-2 are can be exposed to the outside.

The first side plate 121 may be disposed on one side of the first corner portion C1-1. The second side plate 122 may be disposed on the other side of the first corner portion C1-1. A first corner portion C1-1 may be disposed between the first side plate 121 and the second side plate 122 .

The second side plate 122 may be disposed on one side of the second corner portion C1-2. The third side plate 123 may be disposed on the other side of the second corner portion C1-2. A second corner portion C1 - 2 may be disposed between the second side plate 122 and the third side plate 123 .

The third side plate 123 may be disposed on one side of the third corner portion C1-3. The fourth side plate 124 may be disposed on the other side of the third corner portion C1-3. A third corner portion C1-3 may be disposed between the third side plate 123 and the fourth side plate 124 .

The fourth side plate 124 may be disposed on one side of the fourth corner portion C1-4. The first side plate 121 may be disposed on the other side of the fourth corner portion C1-4. A fourth corner portion C1-4 may be disposed between the fourth side plate 124 and the first side plate 121 .

In the drawing, the first corner part C1-1, the second corner part C1-2, the third corner part C1-3, and the fourth corner part C1-4 are shown in a rounded shape. However, the shapes of the first corner part C1-1, the second corner part C1-2, the third corner part C1-3, and the fourth corner part C1-4 are not limited thereto. The first corner part C1-1, the second corner part C1-2, the third corner part C1-3, and the fourth corner part C1-4 may be angled.

Furthermore, in this modified example (not shown), the cover 100 may have a cylindrical shape. In this case, the first corner part C1-1, the second corner part C1-2, and the third corner part C1. -3) and the fourth corner portion C1-4 may be four specific points spaced apart in the circumferential direction, and the first side plate 121, the second side plate 122, the third side plate 123 and the fourth The side plate 124 is 4 disposed between the first corner part C1-1, the second corner part C1-2, the third corner part C1-3, and the fourth corner part C1-4, respectively. It may be a side plate of a dog.

The housing 200 may be disposed inside the cover 100 . A bobbin 400 may be disposed inside the housing 200 . A base 800 may be disposed under the housing 200 . A magnet 300 may be disposed in the housing 200 . The first elastic member 600 may be disposed on the housing 200 . A first elastic member 600 may be disposed between the housing 200 and the upper plate 110 of the cover 100 . The second elastic member 700 may be disposed under the housing 200 . A second elastic member 700 may be disposed between the housing 200 and the base 800 . The housing 200 may be a plastic injection molding.

The housing 200 includes a first side portion 210 , a second side portion 220 , a third side portion 230 , a fourth side portion 240 , a first rib 210-1, and a second rib 210-2. , a third rib 220-1, a fourth rib 220-2, a fifth rib 230-1, a sixth rib 230-2, a seventh rib 240-1, an eighth rib ( 240-2), a first accommodating part 250, a second accommodating part 260, a third accommodating part 270, and a fourth accommodating part 280 may be included.

The first side portion 210 may be disposed to face the first side plate 121 . The second side portion 220 may be disposed to face the second side plate 122 . The third side portion 230 may be disposed to face the third side plate 123 . The fourth side portion 240 may be disposed to face the fourth side plate 124 .

The first side portion 210 and the third side portion 230 may face each other and may be disposed in parallel. The second side portion 220 and the fourth side portion 240 may face each other and may be disposed in parallel.

The first side portion 210 and the second side portion 220 may be connected by a first rib 210-1 and a second rib 210-2. A first rib 210 - 1 and a second rib 210 - 2 may be disposed at a corner between the first side portion 210 and the second side portion 220 .

The first rib 210-1 and the second rib 210-2 may be spaced apart from each other in the vertical direction. A first magnet 310 may be disposed between the first rib 210-1 and the second rib 210-2. The first rib 210 - 1 may connect upper ends of the first side portion 210 and the second side portion 220 . The second rib 210 - 2 may connect the lower ends of the first side portion 210 and the second side portion 220 .

The first rib 210-1 may extend from the first side portion 210 and the second side portion 220 toward the first corner portion C1-1. The first rib 210-1 may include a first chamfer (chamfer). The first chamfered surface may be disposed at a corner of the first rib 210-1. The first chamfer may face the first corner portion C1-1.

The second rib 210 - 2 may extend from the first side portion 210 and the second side portion 220 toward the first corner portion C1-1. The second rib 210 - 2 may include a second chamfered surface. The second chamfered surface may be disposed at a corner portion of the second rib 210 - 2 . The second chamfered surface may face the first corner portion C1-1.

The first rib 210-1 may protrude in a direction in which the first corner portion C1-1 is located rather than the second rib 210-2. The first rib 210 - 1 may protrude outward from the second rib 210 - 2 in a horizontal direction. That is, the distance from the first chamfered surface to the first corner portion C1-1 may be shorter than the distance from the second chamfered surface to the first corner portion C1-1. The shortest distance from the center of the first chamfered surface to the inner surface of the edge (outermost portion) of the first corner portion C1-1 is the edge (outermost portion) of the first corner portion C1-1 from the second chamfered surface. It may be shorter than the shortest distance to the inner surface of As a result, the first rib 210-1 and the first protrusion 821 of the base 800 may at least partially overlap in the optical axis direction (up and down direction). On the other hand, the second rib 210 - 2 and the first protrusion 821 of the base 800 may not overlap in the optical axis direction (up and down direction).

The second side portion 220 and the third side portion 230 may be connected by a third rib 220-1 and a fourth rib 220-2. A third rib 220 - 1 and a fourth rib 220 - 2 may be disposed at a corner between the second side portion 220 and the third side portion 220 .

The third rib 220-1 and the fourth rib 220-2 may be spaced apart from each other in the vertical direction. A second magnet 320 may be disposed between the third rib 220-1 and the fourth rib 220-2. The third rib 220 - 1 may connect the second side portion 220 and the upper end of the third side portion 230 . The fourth rib 220 - 2 may connect the lower ends of the second side portion 220 and the third side portion 230 .

The third rib 220 - 1 may extend from the second side portion 220 and the third side portion 230 toward the second corner portion C1 - 2 . The third rib 220 - 1 may include a third chamfer (chamfer). The third chamfer may be disposed at a corner of the third rib 220 - 1 . The third chamfered surface may face the second corner portion C1 - 2 .

The fourth rib 220 - 2 may extend from the second side portion 220 and the third side portion 230 toward the second corner portion C1 - 2 . The fourth rib 220 - 2 may include a fourth chamfered surface. The fourth chamfered surface may be disposed at a corner of the fourth rib 220 - 2 . The fourth chamfered surface may face the second corner portion C1 - 2 .

The third rib 220-1 may protrude in a direction in which the second corner portion C1-2 is located rather than the fourth rib 220-2. The third rib 220-1 may protrude outward from the fourth rib 220-2 in a horizontal direction. That is, the distance from the third chamfered surface to the second corner part C1-2 may be shorter than the distance from the fourth chamfered surface to the second corner part C1-2. The shortest distance from the center of the third chamfered surface to the inner surface of the edge (outermost part) of the second corner part C1-2 is the edge (outermost part) of the second corner part C1-2 from the fourth chamfered plane It may be shorter than the shortest distance to the inner surface of As a result, the third rib 220 - 1 and the second protrusion 822 of the base 800 may at least partially overlap in the optical axis direction (up and down direction). On the other hand, the fourth rib 220 - 2 and the second protrusion 822 of the base 800 may not overlap in the optical axis direction (up and down direction).

The third side portion 230 and the fourth side portion 240 may be connected by a fifth rib 230-1 and a sixth rib 230-2. A fifth rib 230 - 1 and a sixth rib 230 - 2 may be disposed at a corner between the third side portion 230 and the fourth side portion 240 .

The fifth rib 230-1 and the sixth rib 230-2 may be spaced apart from each other in the vertical direction. A third magnet 330 may be disposed between the fifth rib 230-1 and the sixth rib 230-2. The fifth rib 230-1 may connect the upper ends of the third side portion 230 and the fourth side portion 240 . The fifth rib 230 - 2 may connect the lower ends of the third side portion 230 and the fourth side portion 240 .

The fifth rib 230-1 may extend from the third side portion 230 and the fourth side portion 240 toward the third corner portion C1-3. The fifth rib 230-1 may include a fifth chamfered surface (chamfer). The fifth chamfered surface may be disposed at a corner portion of the fifth rib 230-1. The fifth chamfered surface may face the third corner portion C1-3.

The sixth rib 230 - 2 may extend from the third side portion 230 and the fourth side portion 240 toward the third corner portion C1-3. The sixth rib 230 - 2 may include a sixth chamfered surface. The sixth chamfer may be disposed at a corner of the sixth rib 230 - 2 . The sixth chamfer may face the third corner portion C1-3.

The fifth rib 230-1 may protrude in a direction in which the third corner portion C1-3 is located rather than the sixth rib 230-2. The fifth rib 230 - 1 may protrude outward from the sixth rib 230 - 2 in a horizontal direction. That is, the distance from the fifth chamfered surface to the third corner portion C1-3 may be shorter than the distance from the sixth chamfered surface to the third corner portion C1-3. The shortest distance from the center of the fifth chamfered surface to the inner surface of the edge (outermost part) of the third corner part C1-3 is the edge (outermost part) of the third corner part C1-3 from the sixth chamfered plane It may be shorter than the shortest distance to the inner surface of As a result, the fifth rib 230-1 and the third protrusion 823 of the base 800 may at least partially overlap in the optical axis direction (up and down direction). On the other hand, the sixth rib 230 - 2 and the third protrusion 823 of the base 800 may not overlap in the optical axis direction (up and down direction).

The fourth side portion 240 and the first side portion 210 may be connected by a seventh rib 240-1 and an eighth rib 240-2. A seventh rib 240 - 1 and an eighth rib 240 - 2 may be disposed at a corner between the fourth side portion 240 and the first side portion 210 .

The seventh rib 240 - 1 and the eighth rib 240 - 2 may be spaced apart from each other in the vertical direction. A fourth magnet 340 may be disposed between the seventh rib 240-1 and the eighth rib 240-2. The seventh rib 240 - 1 may connect the fourth side portion 240 and the upper end of the first side portion 210 . The eighth rib 240 - 2 may connect the fourth side portion 240 and the lower end of the first side portion 210 .

The seventh rib 240 - 1 may extend from the fourth side portion 240 and the first side portion 210 toward the fourth corner portion C1-4. The seventh rib 240 - 1 may include a seventh chamfer (chamfer). The seventh chamfer may be disposed at a corner portion of the seventh rib 240 - 1 . The fifth chamfered surface may face the fourth corner portion C1-4.

The eighth rib 240 - 2 may extend from the fourth side portion 240 and the first side portion 210 toward the fourth corner portion C1-4. The eighth rib 240 - 2 may include an eighth chamfered surface. The eighth chamfered surface may be disposed at a corner of the eighth rib 240 - 2 . The eighth chamfered surface may face the fourth corner portion C1-4.

The seventh rib 240-1 may protrude in a direction in which the fourth corner portion C1-4 is located rather than the eighth rib 240-2. The seventh rib 240 - 1 may protrude outward from the eighth rib 240 - 2 in a horizontal direction. That is, the distance from the seventh chamfered surface to the fourth corner portion C1-4 may be shorter than the distance from the eighth chamfered surface to the fourth corner portion C1-4. The shortest distance from the center of the 7th chamfered surface to the inner surface of the edge (outermost part) of the fourth corner part (C1-4) is the edge (outermost part) of the fourth corner part (C1-4) from the 8th chamfered plane It may be shorter than the shortest distance to the inner surface of As a result, the seventh rib 240 - 1 and the fourth protrusion 824 of the base 800 may at least partially overlap in the optical axis direction (up and down direction). On the other hand, the eighth rib 240 - 2 and the fourth protrusion 824 of the base 800 may not overlap in the optical axis direction (up and down direction).

The first side part 210, the second side part 220, the third side part 230, the fourth side part 240, the first rib 210-1, the second rib 210-2, the third rib ( 220-1), the fourth rib 220-2, the fifth rib 230-1, the sixth rib 230-2, the seventh rib 240-1, and the eighth rib 240-2. A hole aligned with the optical axis may be disposed inside the center. The bobbin 400 may be accommodated in the hole of the housing 200 .

A first accommodating part 250 may be disposed at a lower end of the first side part 210 . A second accommodating part 260 may be disposed at a lower end of the second side part 220 . A third accommodating part 270 may be disposed at a lower end of the third side part 230 . A fourth accommodating part 280 may be disposed at a lower end of the fourth side part 240 . The first accommodating part 250 , the second accommodating part 260 , the third accommodating part 270 , and the fourth accommodating part 280 may be in the form of grooves dug upward from the lower end of each side of the housing 200 . . The first accommodating part 250 , the second accommodating part 260 , the third accommodating part 270 , and the fourth accommodating part 280 are holes passing through the outer and inner surfaces of each side of the housing 200 . may be in the form

The first accommodating part 250 may accommodate at least a portion of the first stopper 420 of the bobbin 400 . The first accommodating part 250 may at least partially overlap the side surface of the first stopper 420 in the horizontal direction. Accordingly, rotation of the bobbin 400 with respect to the optical axis may be blocked by the first stopper 420 and the first accommodating part 250 . This is because, when the bobbin 400 is rotated, the first stopper 420 of the bobbin 400 is caught on the horizontal stopper of the first side portion 210 formed by the first accommodating part 250 . The first accommodating part 250 may at least partially overlap the upper surface of the first stopper 420 in the vertical direction (up and down direction, optical axis direction). Accordingly, upward movement of the bobbin 400 may be blocked by the first accommodating part 250 . This is because, when the bobbin 400 moves upward, the first stopper 420 of the bobbin 400 is caught on the vertical stopper jaw of the first side part 210 formed by the first accommodating part 250 .

The second accommodating part 260 may accommodate at least a portion of the second stopper 430 of the bobbin 400 . The third accommodating part 270 may accommodate at least a portion of the third stopper of the bobbin 400 . The fourth accommodating part 280 may accommodate at least a portion of the fourth stopper of the bobbin 400 . The structures, functions and effects of the second accommodating part 260 and the second stopper 430, the structures, functions and effects of the third accommodating part 270 and the third stopper, and the fourth accommodating part 280 and the first The structures, functions, and effects of the first accommodating part 250 and the first stopper 420 may be applied mutatis mutandis to the structure, function, and effect of the 4 stopper.

The rotation and upward movement of the bobbin 400 may be restricted by the mutual arrangement and structure of the receiving part of the housing 200 and the stopper of the bobbin 400 . Therefore, in the voice coil motor 1000 of this embodiment, when the bobbin 400 is shaken beyond the design condition by receiving an external shock, the bobbin ( 400) can be blocked.

The magnet 300 may be disposed in the housing 200 . The magnet 300 may face the coil 500 . The magnet 300 may electromagnetically interact with the coil 500 to provide a driving force to the bobbin 400 . The magnet 300 may include a first magnet 310 , a second magnet 320 , a third magnet 330 , and a fourth magnet 340 . The first magnet 310 , the second magnet 320 , the third magnet 330 , and the fourth magnet 340 may have a trapezoidal column shape. The first magnet 310 , the second magnet 320 , the third magnet 330 , and the fourth magnet 340 may be “permanent magnets”.

The first magnet 310 may be disposed between the first rib 210-1 and the second rib 210-2. An upper surface of the first magnet 310 may face the first rib 210-1. A lower surface of the first magnet 310 may face the second rib 210 - 2 . The first magnet 310 may be supported by the second rib 210 - 2 . The first magnet 310 may be coupled to the second rib 210 - 2 . An adhesive may be applied between the upper surface of the first magnet 310 and the lower surface of the first rib 210 - 1 . An adhesive may be applied between the lower surface of the first magnet 310 and the upper surface of the second rib 210 - 2 .

The first magnet 310 may include one side opposite to the first coil surface 510 of the coil 500 . The first magnet 310 may include the other side opposite to the first protrusion 821 of the base 800 . An adhesive may be applied between the other side of the first magnet 310 and the first protrusion 821 .

In summary, the first magnet 310 has an upper surface and a lower surface adhered to the first rib 210-1 and the second rib 210-2, and the other side is adhered to the first protrusion 821, can be stably fixed. Furthermore, one side of the first magnet 310 may face the first coil surface 510 . The first magnet 310 may have a constant thickness in the horizontal direction at a portion overlapping the first coil surface 510 in the horizontal direction. Accordingly, the magnetic force line may pass equally through the first coil surface 510 .

The second magnet 320 may be disposed between the third rib 220-1 and the fourth rib 220-2. An upper surface of the second magnet 320 may face the third rib 220 - 1 . A lower surface of the second magnet 320 may face the fourth rib 220 - 2 . The second magnet 320 may be supported by the fourth rib 220 - 2 . The second magnet 320 may be coupled to the fourth rib 220 - 2 . An adhesive may be applied between the upper surface of the second magnet 320 and the lower surface of the third rib 220 - 1 . An adhesive may be applied between the lower surface of the second magnet 320 and the upper surface of the fourth rib 220 - 2 .

The second magnet 320 may include one side opposite to the second coil surface 520 of the coil 500 . The second magnet 320 may include the other side surface opposite to the second protrusion 822 of the base 800 . An adhesive may be applied between the other side of the second magnet 320 and the second protrusion 822 .

In summary, the second magnet 320 has an upper surface and a lower surface adhered to the third rib 220-1 and the fourth rib 220-2, and the other side is adhered to the second protrusion 822, can be stably fixed. Furthermore, one side of the second magnet 320 may face the second coil surface 520 . The second magnet 320 may have a constant thickness in the horizontal direction at a portion overlapping the second coil surface 520 in the horizontal direction. Accordingly, the magnetic force line may pass equally through the second coil surface 520 .

The third magnet 330 may be disposed between the fifth rib 230-1 and the sixth rib 230-2. An upper surface of the third magnet 330 may face the fifth rib 230-1. A lower surface of the third magnet 330 may face the sixth rib 230 - 2 . The third magnet 330 may be supported by the sixth rib 230 - 2 . The third magnet 330 may be coupled to the sixth rib 230 - 2 . An adhesive may be applied between the upper surface of the third magnet 330 and the lower surface of the fifth rib 230-1. An adhesive may be applied between the lower surface of the third magnet 330 and the upper surface of the sixth rib 230 - 2 .

The third magnet 330 may include one side opposite to the third coil surface 530 of the coil 500 . The third magnet 330 may include the other side opposite to the third protrusion 823 of the base 800 . An adhesive may be applied between the other side of the third magnet 330 and the third protrusion 823 .

In summary, the third magnet 330 has an upper surface and a lower surface adhered to the fifth rib 230-1 and the sixth rib 230-2, and the other side surface is adhered to the third protrusion 823, can be stably fixed. Furthermore, one side of the third magnet 330 may face the third coil surface 530 . The third magnet 330 may have a constant thickness in the horizontal direction at a portion overlapping the third coil surface 530 in the horizontal direction. Accordingly, the magnetic force line may pass equally through the third coil surface 530 .

The fourth magnet 340 may be disposed between the seventh rib 240-1 and the eighth rib 240-2. An upper surface of the fourth magnet 340 may face the seventh rib 240 - 1 . A lower surface of the fourth magnet 340 may face the eighth rib 240 - 2 . The fourth magnet 340 may be supported by the eighth rib 240 - 2 . The fourth magnet 340 may be coupled to the eighth rib 240 - 2 . An adhesive may be applied between the upper surface of the fourth magnet 340 and the lower surface of the seventh rib 240 - 1 . An adhesive may be applied between the lower surface of the fourth magnet 340 and the upper surface of the eighth rib 240 - 2 .

The fourth magnet 340 may include a side surface opposite to the fourth coil surface 540 of the coil 500 . The fourth magnet 340 may include the other side surface opposite to the fourth protrusion 824 of the base 800 . An adhesive may be applied between the other side of the fourth magnet 340 and the fourth protrusion 824 .

In summary, the fourth magnet 340 has the upper and lower surfaces bonded to the seventh ribs 240-1 and the eighth ribs 240-2, and the other side is bonded to the fourth protrusion 824, can be stably fixed. Furthermore, one side of the fourth magnet 340 may face the fourth coil surface 540 . The fourth magnet 340 may have a constant thickness in the horizontal direction at a portion overlapping the fourth coil surface 540 in the horizontal direction. Accordingly, the magnetic force line may pass equally through the fourth coil surface 540 .

The bobbin 400 may be disposed inside the housing 200 . A lens module may be disposed inside the bobbin 400 . The bobbin 400 and the lens module are coupled, so that when the bobbin 400 moves, the lens module can move integrally with the bobbin 400 . The first elastic member 600 may be disposed on the bobbin 400 . A second elastic member 700 may be disposed under the bobbin 400 . The bobbin 400 may be elastically supported by the housing 200 in the vertical direction (optical axis direction) by the first elastic member 600 and the second elastic member 700 . A coil 500 may be disposed on the outer peripheral surface 410 of the bobbin 400 . In this case, the coil 500 may be located below the outer peripheral surface of the bobbin 400 . In this case, the outer peripheral surface of the bobbin 400 may be composed of 16 surfaces along the circumferential direction with the optical axis as the rotation axis. As a result, the coil 500 may also have 16 corresponding faces.

The bobbin 400 may include a first stopper 420 , a second stopper 430 , a third stopper (not shown), and a fourth stopper (not shown). The first stopper 420 , the second stopper 430 , the third stopper, and the fourth stopper may be disposed on the outer peripheral surface 410 of the bobbin 400 . The first stopper 420 , the second stopper 430 , the third stopper, and the fourth stopper may be located under the coil 500 . The first stopper 420 , the second stopper 430 , the third stopper, and the fourth stopper may have a shape protruding outward in the horizontal direction. The first stopper 420 may protrude in a direction in which the first side plate 121 is located. The second stopper 420 may protrude in a direction in which the second side plate 122 is located. The third stopper 420 may protrude in a direction in which the third side plate 123 is located. The fourth stopper 420 may protrude in a direction in which the fourth side plate 124 is located. The first stopper 420 and the third stopper may be symmetrically disposed with respect to the optical axis. The second stopper 430 and the fourth stopper may be symmetrically disposed with respect to the optical axis.

At least a portion of the first stopper 420 may be accommodated in the first accommodating part 250 . An upper portion of the first stopper 420 may be accommodated in the first accommodating part 250 . At least a portion of the second stopper 430 may be accommodated in the second accommodating part 260 . An upper portion of the second stopper 430 may be accommodated in the second accommodating part 260 . At least a portion of the third stopper may be accommodated in the third accommodating part 270 . An upper portion of the third stopper may be accommodated in the third accommodating part 270 . At least a portion of the fourth stopper may be accommodated in the fourth accommodating part 280 . An upper portion of the fourth stopper may be accommodated in the fourth accommodating part 280 .

The upward movement of the bobbin 400 or rotation of the bobbin 400 causes the upper portions of the first stopper 420, the second stopper 430, the third stopper, and the fourth stopper, the first accommodating part 150, the first The second accommodating part 160 , the third accommodating part 170 , and the fourth accommodating part 180 may be caught and blocked by the clasp of the housing 200 .

At least a portion of the first stopper 420 may overlap the first blocking protrusion 841 of the base 800 in the optical axis direction (up and down direction). At least a portion of the second stopper 430 may overlap the second blocking protrusion 842 of the base 800 in the optical axis direction (up and down direction). At least a portion of the third stopper may overlap the third blocking protrusion 843 of the base 800 in the optical axis direction (up and down direction). At least a portion of the fourth stopper may overlap the fourth blocking protrusion 843 of the base 800 in the optical axis direction (up and down direction).

The first stopper 420 may be spaced upward from the first blocking protrusion 841 . The second stopper 430 may be spaced upward from the second blocking protrusion 842 . The third stopper may be spaced apart from the third blocking purlin (843). The fourth stopper may be spaced apart from the fourth blocking protrusion 844 .

When the bobbin 400 moves downward, the lower portion of the first stopper 420 may be in contact with the first blocking protrusion 841 , and the lower portion of the second stopper 430 may be in contact with the second blocking protrusion 842 . and a lower portion of the third stopper may be in contact with the third blocking protrusion 843 , and a lower portion of the fourth stopper 450 may be in contact with the fourth blocking protrusion 843 . Accordingly, the downward movement of the bobbin 400 may be blocked. That is, the downward movement range of the bobbin 400 includes the first stopper 420 , the second stopper 430 , the third stopper and the fourth stopper, and the first blocking projection 841 , the second blocking projection 842 , and the second blocking projection 842 , It may be limited by the third blocking protrusion 843 and the fourth blocking protrusion 844 .

The lower portions of the first stopper 420 , the second stopper 430 , the third stopper and the fourth stopper may have a tapered shape inclined inward toward the bottom. That is, the widths of the lower portions of the first stopper 420 , the second stopper 430 , the third stopper and the fourth stopper may become narrower downward. This is to ensure that the stopper of the bobbin 400 and the extension of the base 800 come into contact when performing the autofocus function, and thus the movement (upward and downward movement) of the bobbin 400 in the optical axis direction is interfered with.

The coil 500 may be disposed on the outer peripheral surface 410 of the bobbin 400 . The coil 500 may be wound around the outer peripheral surface 410 of the bobbin 400 . The coil 500 may be in the form of a “coil block”. The coil 500 may be an “electromagnet”. The coil 500 may electromagnetically interact with the magnet 300 to provide a driving force of the bobbin 400 . Both ends of the coil 500 may be drawn out, respectively, and connected to the second elastic member 700 . As a result, the coil 500 may be electrically connected to the second elastic member 700 . The second elastic member 700 may receive power from the substrate through the first terminal 740 - 1 and the second terminal 740 - 2 . The coil 500 may receive power from the second elastic member 700 to generate electromagnetic force.

The coil 500 has a first coil surface 510 facing the first magnet 310 , a second coil surface 520 facing the second magnet 320 , and a third magnet 330 facing each other. It may include a third coil surface 530 and a fourth coil surface 540 facing the fourth magnet 340 .

The first coil surface 510 and the third coil surface 530 may be symmetrically disposed with respect to the optical axis. The second coil surface 520 and the fourth coil surface 540 may be symmetrically disposed with respect to the optical axis. A first plane may be disposed between the first coil surface 510 and the second coil surface 520 . A first curved surface and a second curved surface may be disposed between the first coil surface 510 and the first plane and between the second coil surface 520 and the first plane, respectively. A second plane may be disposed between the second coil surface 520 and the third coil surface 530 . A third curved surface and a fourth curved surface may be respectively disposed between the second coil surface 520 and the second plane and between the third coil surface 530 and the second plane. A third plane may be disposed between the third coil surface 530 and the fourth coil surface 540 . A fifth curved surface and a sixth curved surface may be disposed between the third coil surface 530 and the third plane and between the fourth coil surface 540 and the third plane, respectively. A fourth plane may be disposed between the fourth coil surface 540 and the first coil surface 510 . A seventh curved surface and an eighth curved surface may be disposed between the fourth coil surface 540 and the fourth plane and between the first coil surface 510 and the fourth plane, respectively. Summarizing the above, the coil 500 may be composed of a total of 16 surfaces.

The first elastic member 600 may be a plate spring. The first elastic member 600 may be made of metal. The first elastic member 600 may be non-magnetic. Accordingly, the first elastic member 600 may not be affected by the magnetic force of the magnet 300 and the electromagnetic force of the coil 500 .

The first elastic member 600 may be disposed on the housing 200 . The first elastic member 600 may be disposed on the bobbin 400 . The first elastic member 600 may be disposed between the housing 200 and the upper plate 110 of the cover 100 . The first elastic member 600 may be disposed between the bobbin 400 and the upper plate 110 of the cover 100 . The first elastic member 600 may be coupled to the housing 200 and the bobbin 400 . The first elastic member 600 may elastically connect between the housing 200 and the bobbin 400 .

The first elastic member 600 includes a first outer elastic member 610 , a first inner elastic member 620 , a 1-1 connection elastic member 630-1, and a 1-2 connection elastic member 630-2. ), a 1-3 connection elastic member 630-3 and a 1-4 connection elastic member 630-4 may be included.

The first outer elastic member 610 may be coupled to the housing 200 . To this end, a plurality of holes or grooves in which a plurality of bosses of the housing 200 are disposed may be formed in the first outer elastic member 610 . An adhesive may be applied to the coupling portion between the first outer elastic member 610 and the housing 200 .

The first inner elastic member 620 may be coupled to the bobbin 400 . To this end, a plurality of holes or grooves in which a plurality of bosses of the bobbin 400 are disposed may be formed in the first inner elastic member 620 . An adhesive may be applied to the coupling portion between the first inner elastic member 620 and the bobbin 400 .

The 1-1 connection elastic member 630-1, the 1-2 connection elastic member 630-2, the 1-3 connection elastic member 630-3, and the 1-4 connection elastic member 630-4 ) may be disposed between the first outer elastic member 610 and the first inner elastic member 620 . The 1-1 connection elastic member 630-1, the 1-2 connection elastic member 630-2, the 1-3 connection elastic member 630-3, and the 1-4 connection elastic member 630-4 ) may elastically connect between the first outer elastic member 610 and the first inner elastic member 620 . As a result, the housing 200 and the bobbin 400 may be elastically connected.

The 1-1 connection elastic member 630-1, the 1-2 connection elastic member 630-2, the 1-3 connection elastic member 630-3, and the 1-4 connection elastic member 630-4 ) may be formed with a plurality of corners. The 1-1 connection elastic member 630-1, the 1-2 connection elastic member 630-2, the 1-3 connection elastic member 630-3, and the 1-4 connection elastic member 630-4 ) may be spaced apart from each other. The 1-1 connection elastic member 630-1 may be spaced apart from the first corner portion C1-1 in a direction in which the optical axis is located. The 1-2 connection elastic members 630 - 2 may be spaced apart from each other in the direction in which the optical axis is located in the second corner portion C1 - 2 . The 1-3 connection elastic members 630 - 3 may be spaced apart from each other in the direction in which the optical axis is located in the third corner portion C1-3. The 1-4th connection elastic member 630-4 may be spaced apart from the fourth corner part C1-4 in a direction in which the optical axis is located.

The second elastic member 700 may be a plate spring. The second elastic member 700 may be made of metal. The second elastic member 700 may be non-magnetic. Accordingly, the second elastic member 700 may not be affected by the magnetic force of the magnet 300 and the electromagnetic force of the coil 500 . The second elastic member 700 may be electrically connected to the coil 500 . The second elastic member 700 may be electrically connected to the substrate. The second elastic member 700 may electrically connect the coil 500 and the substrate.

The second elastic member 700 may be disposed under the housing 200 . The second elastic member 700 may be disposed under the bobbin 400 . The second elastic member 700 may be disposed between the housing 200 and the base 800 . The second elastic member 700 may be disposed between the bobbin 400 and the base 800 . The second elastic member 700 may be coupled to the housing 200 and the bobbin 400 . The second elastic member 700 may elastically connect between the housing 200 and the bobbin 400 .

The second elastic member 700 is a 2-1-th outer elastic member 710-1, a 2-2 outer elastic member 710-2, a 2-3-th outer elastic member 710-3, and a second- 4 outer elastic member 710-4, 2-1 inner elastic member 720-1, 2-2 inner elastic member 720-2, 2-1 connecting elastic member 730-1, first 2-2 connection elastic member 730-2, 2-3 connection elastic member 730-3, 2-4 connection elastic member 730-4, first terminal 740-1 and second terminal (740-2) may be included.

The second-first outer elastic member 710-1, the second-second outer elastic member 710-2, the second-third outer elastic member 710-3, and the second- fourth outer elastic member 710-4 ) may be combined with the housing 200 . To this end, the second-first outer elastic member 710-1, the second-second outer elastic member 710-2, the second-third outer elastic member 710-3 and the second fourth outer elastic member (710-3) A plurality of holes or grooves in which a plurality of bosses of the housing 200 are disposed may be formed in 710 - 4 . The second-first outer elastic member 710-1, the second-second outer elastic member 710-2, the second-third outer elastic member 710-3, and the second- fourth outer elastic member 710-4 ) and an adhesive may be applied to the coupling portion of the housing 200 .

A 2-1 outer elastic member 710-1, a 2-2 outer elastic member 710-2, a 2-3 outer elastic member 710-3, and a 2-4 outer elastic member 710-4 ) may be spaced apart from each other. The 2-1 th outer elastic member 710 - 1 may be spaced apart from the first corner portion C1-1 in a direction in which the optical axis is located. The 2-2nd outer elastic member 710-2 may be spaced apart from the second corner part C1-2 in a direction in which the optical axis is located. The 2-3rd outer elastic member 710-3 may be spaced apart from the third corner part C1-3 in a direction in which the optical axis is located. The 2-4th outer elastic member 710-4 may be spaced apart from the first corner part C1-4 in a direction in which the optical axis is located.

The second-first inner elastic member 720-1 and the second-second inner elastic member 720-2 may be coupled to the bobbin 400 . To this end, a plurality of holes or grooves in which a plurality of bosses of the bobbin 400 are disposed may be formed in the second-first inner elastic member 720-1 and the second-second inner elastic member 720-2. . An adhesive may be applied to the coupling portion of the 2-1 inner elastic member 720-1 and the second-second inner elastic member 720-2 and the bobbin 200 . The second-first inner elastic member 720-1 and the second-second inner elastic member 720-2 may be positioned to be spaced apart from each other. The second-first inner elastic member 720-1 and the second-second inner elastic member 720-2 may have a ring shape cut to have a rotation angle of 180 degrees.

The 2-1-th connection elastic member 730-1 and the 2-2 connection elastic member 730-2 include the 2-1-th outer elastic member 710-1 and the 2-2 outer elastic member 710- 2) and the second-first inner elastic member 720-1 may be disposed. The 2-1-th connection elastic member 730-1 and the 2-2 connection elastic member 730-2 include the 2-1-th outer elastic member 710-1 and the 2-2 outer elastic member 710- 2) and the second-first inner elastic member 720-1 may be elastically connected. The 2-3rd connection elastic member 730-3 and the 2-4th connection elastic member 730-4 are the 2-3rd outer elastic member 710-3 and the 2-4th outer elastic member 710- 4) and the second-second inner elastic member 720-2. The 2-3rd connection elastic member 730-3 and the 2-4th connection elastic member 730-4 are the 2-3rd outer elastic member 710-3 and the 2-4th outer elastic member 710- 4) and the second-second inner elastic member 720-2 may be elastically connected. As a result, the housing 200 and the bobbin 400 may be elastically connected.

A 2-1 connection elastic member 730-1, a 2-2 connection elastic member 730-2, a 2-3 connection elastic member 730-3, and a 2-4 connection elastic member 730-4 ) may be formed with a plurality of corners. A 2-1 connection elastic member 730-1, a 2-2 connection elastic member 730-2, a 2-3 connection elastic member 730-3, and a 2-4 connection elastic member 730-4 ) may be spaced apart from each other. The 2-1 connection elastic member 730 - 1 may be spaced apart from the first corner portion C1-1 in a direction in which the optical axis is located. The 2-2 connection elastic member 730 - 2 may be spaced apart from the second corner portion C1 - 2 in a direction in which the optical axis is located. The 2-3rd connection elastic member 730-3 may be spaced apart from the third corner part C1-3 in the direction in which the optical axis is located. The 2-4 connecting elastic members 730 - 4 may be spaced apart from each other in the direction in which the optical axis is located in the fourth corner portion C1-4.

The 2-2nd outer elastic member 710 - 2 may be electrically connected to one lead wire of the coil 500 . The 2-3rd outer elastic member 710 - 3 may be electrically connected to the other lead wire of the coil 500 . The 2-2nd outer elastic member 710 - 2 may be electrically connected to the substrate through the first terminal 740 - 1 . The 2-3rd outer elastic member 710-3 may be electrically connected to the substrate through the second terminal 740-2. Therefore, the control current of the substrate passes through the first terminal 740-1, the second terminal 740-2, the 2-2 outer elastic member 710-2, and the 2-3rd outer elastic member 710-3. It may be supplied to the coil 500 through the.

The first terminal 740-1 may extend downward from one end of the second-second outer elastic member 710-2, or may be curved or bent downward. The second terminal 740-2 may extend downward from one end of the 2-3rd outer elastic member 710-2, or may be curved or bent downward.

The first terminal 740-1 and the second terminal 740-2 may be respectively disposed in two grooves or grooves formed at the lower end of the third side plate 123, and through this, they may be guided and exposed to the outside. there is. The first terminal 740-1 and the second terminal 740-2 may be respectively disposed in the first recessed part 851 and the second recessed part 852 of the base 800, and through this, they are guided can be exposed to the outside. The first terminal 740 - 1 and the second terminal 740 - 2 may be mounted on a substrate. The first terminal 740 - 1 and the second terminal 740 - 2 may be electrically connected to the substrate.

The base 800 may be disposed under the cover 100 . The base 800 may be disposed under the housing 200 . The base 800 may be disposed under the bobbin 400 . An adhesive may be applied between the base 800 and the cover 100 . An adhesive may be applied between the base 800 and the housing 200 . The base 800 may be in the form of a rectangular plate having an approximate thickness. A hole aligned with the optical axis may be formed in the center of the base 800 . The light passing through the lens module may pass through the hole of the base 800 and be irradiated to the filter and the image sensor. Various protruding structures protruding upward may exist on the upper surface of the base 800 .

The base 800 includes a fifth side portion 811 , a sixth side portion 812 , a seventh side portion 813 , an eighth side portion 814 , a fifth corner portion C2-1 , and a sixth corner portion C2- 2), the seventh corner part (C2-3), the eighth corner part (C2-4), the first protrusion 821, the second protrusion 822, the third protrusion 823, the fourth protrusion 824 , first extension 831 , second extension 832 , third extension 833 , fourth extension 834 , fifth extension 835 , sixth extension 836 , th Seven extensions 837, eighth extensions 838, first blocking projections 841, second blocking projections 842, third blocking projections 843, fourth blocking projections 844, first depression It may include a portion 841 and a second recessed portion 842 .

The fifth side portion 811 may be disposed on one side of the fifth corner portion C2-1. The sixth side portion 812 may be disposed on the other side of the fifth corner portion C2-1. A fifth corner portion C2-1 may be disposed between the fifth side portion 811 and the sixth side portion 812 .

The sixth side portion 812 may be disposed on one side of the sixth corner portion C2-2. The seventh side portion 813 may be disposed on the other side of the sixth corner portion C2-2. A sixth corner portion C2 - 2 may be disposed between the sixth side portion 812 and the seventh side portion 813 .

The seventh side portion 813 may be disposed on one side of the seventh corner portion C2-3. The eighth side portion 814 may be disposed on the other side of the seventh corner portion C2-3. A seventh corner portion C2 - 3 may be disposed between the seventh side portion 813 and the eighth side portion 814 .

The eighth side portion 814 may be disposed on one side of the eighth corner portion C2-4. The fifth side portion 811 may be disposed on the other side of the eighth corner portion C2-4. An eighth corner portion C2 - 4 may be disposed between the eighth side portion 814 and the fifth side portion 811 .

In the drawings, the fifth corner part C2-1, the sixth corner part C2-2, the seventh corner part C2-3, and the eighth corner part C2-4 are shown in a rounded shape. However, the shapes of the fifth corner part C2-1, the sixth corner part C2-2, the seventh corner part C2-3, and the eighth corner part C2-4 are not limited thereto. The fifth corner part C2-1, the sixth corner part C2-2, the seventh corner part C2-3, and the eighth corner part C2-4 may be angled.

Furthermore, in this modified example (not shown), the base 800 may be in the form of a disk, and in this case, the fifth corner part C2-1, the sixth corner part C2-2, and the seventh corner part C2. -3) and the eighth corner portion C2-4 may be four specific points spaced apart in the circumferential direction, and the fifth side portion 811, the sixth side portion 812, the seventh side portion 813 and the eighth The side portion 814 is 4 disposed between the fifth corner portion C2-1, the sixth corner portion C2-2, the seventh corner portion C2-3, and the eighth corner portion C2-4, respectively. It can be the side of the dog.

The upper surface of the fifth side portion 811 may be coupled to the lower surface of the first side plate 121 to face it. The upper surface of the sixth side portion 812 may be coupled to the lower surface of the second side plate 122 to face it. The upper surface of the seventh side portion 813 may be coupled to the lower surface of the third side plate 123 to face it. The upper surface of the eighth side portion 814 may be coupled to the lower surface of the fourth side plate 124 to face it.

In this case, between the upper surface of the fifth side part 811 and the lower surface of the first side plate 121 , between the upper surface of the sixth side part 812 and the lower surface of the second side plate 122 , the upper surface of the seventh side part 813 and An adhesive may be applied between the lower surface of the third side plate 123 and between the upper surface of the eighth side part 814 and the lower surface of the fourth side plate 124 .

The upper surface of the fifth corner part C2-1 may be coupled to the lower surface of the first corner part C1-1 to face it. The upper surface of the sixth corner part C2-2 may be coupled to the lower surface of the second corner part C1-2 to face it. The upper surface of the seventh corner part C2-3 may be coupled to the lower surface of the third corner part C1-3 to face it. The upper surface of the eighth corner part C2-4 may be coupled to the lower surface of the fourth corner part C1-4 to face it.

In this case, between the upper surface of the fifth corner portion C2-1 and the lower surface of the first corner portion C1-1, the upper surface of the sixth corner portion C2-2 and the second corner portion C1-2 Between the lower surface, between the upper surface of the seventh corner portion (C2-3) and the lower surface of the third corner portion (C1-3), between the upper surface of the eighth corner portion (C2-4) and the fourth corner portion (C1-4) An adhesive may be applied between the undersides.

In summary, the lower end of the cover 100 may be adhered to the upper surface of the base 800 . Accordingly, the cover 100 may be supported by the base 800 .

The first protrusion 821 , the second protrusion 822 , the third protrusion 823 , and the fourth protrusion 824 may protrude upward from the upper surface of the base 800 . The first protrusion 821 , the second protrusion 822 , the third protrusion 823 , and the fourth protrusion 824 may have a column shape. The first protrusion 821 , the second protrusion 822 , the third protrusion 823 , and the fourth protrusion 824 are coupled with the cover 100 , the housing 200 and the magnet 300 to support and stabilize them. can be fixed with

The first protrusions 821 may be disposed to be spaced apart from each other in the direction in which the optical axis is located in the fifth corner portion C2-1. The second protrusions 822 may be disposed to be spaced apart from each other in the direction in which the optical axis is located in the sixth corner portion C2-2. The third protrusion 823 may be disposed to be spaced apart from the seventh corner portion C2-3 in a direction in which the optical axis is located. The fourth protrusion 824 may be disposed to be spaced apart from the eighth corner portion C2-4 in a direction in which the optical axis is located.

The first protrusion 821 may be disposed under the first rib 210-1 beyond the second rib 210-2. That is, the upper surface of the first protrusion 821 may be disposed to face the lower surface of the first rib 210-1. This is because the first rib 210-1 protrudes outward than the second rib 210-2. The upper surface of the first protrusion 821 and the lower surface of the first rib 210-1 may be coupled to each other. In this case, an adhesive may be applied between the upper surface of the first protrusion 821 and the lower surface of the first rib 210-1.

The first protrusion 821 has an inner surface of the first side plate 121, an inner surface of the second side plate 122, an inner surface of the first corner portion C1-1, and a second rib 210-2. It may be disposed to face the outer surface of the and the other side of the first magnet 310 . The side surface of the first protrusion 821, the inner surface of the first side plate 121, the inner surface of the second side plate 122, the inner surface of the first corner part C1-1, and the second rib 210-2 It may be combined with the outer surface of the and the other side of the first magnet 310 . In this case, the side surface of the first protrusion 821, the inner surface of the first side plate 121, the inner surface of the second side plate 122, the inner surface of the first corner portion C1-1, and the second rib 210 An adhesive may be applied between at least one of the outer surface of -2) and the other side of the first magnet 310 .

The second protrusion 822 may be disposed under the third rib 220-1 beyond the fourth rib 220-2. That is, the upper surface of the second protrusion 822 may be disposed to face the lower surface of the third rib 220 - 1 . This is because the third rib 220-1 protrudes outward than the fourth rib 220-2. The upper surface of the second protrusion 822 and the lower surface of the third rib 220-1 may be coupled to each other. In this case, an adhesive may be applied between at least one of the upper surface of the second protrusion 822 and the lower surface of the third rib 220 - 1 .

The second protrusion 822 has an inner surface of the second side plate 122, an inner surface of the third side plate 123, an inner surface of the second corner portion C1-2, and a fourth rib 220-2. It may be disposed to face the outer surface of and the other side of the second magnet 320 . The side surface of the second protrusion 822 is an inner surface of the second side plate 122, an inner surface of the third side plate 123, an inner surface of the second corner portion C1-2, and a fourth rib 220-2. It may be combined with the outer surface of the and the other side of the second magnet 320 . In this case, the side surface of the second protrusion 822, the inner surface of the second side plate 122, the inner surface of the third side plate 123, the inner surface of the second corner portion C1-2, and the fourth rib 220 An adhesive may be applied between at least one of the outer surface of -2) and the other side of the second magnet 320 .

The third protrusion 823 may be disposed under the fifth rib 230-1 beyond the sixth rib 230-2. That is, the upper surface of the third protrusion 823 may be disposed to face the lower surface of the fifth rib 230-1. This is because the fifth rib 230-1 protrudes outward than the sixth rib 230-2. The upper surface of the third protrusion 823 and the lower surface of the fifth rib 230-1 may be coupled to each other. In this case, an adhesive may be applied between the upper surface of the third protrusion 823 and the lower surface of the fifth rib 230-1.

The third protrusion 823 has an inner surface of the third side plate 123, an inner surface of the fourth side plate 124, an inner surface of the third corner portion C1-3, and a sixth rib 230-2. It may be disposed to face the outer surface of the and the other side of the third magnet 330 . The side surfaces of the third protrusion 823 are the inner surface of the third side plate 123 , the inner surface of the fourth side plate 124 , the inner surface of the third corner part C1-3 , and the sixth rib 230 - 2 . It may be combined with the outer surface of the and the other side of the third magnet 330 . In this case, the side surface of the third protrusion 823, the inner surface of the third side plate 123, the inner surface of the fourth side plate 124, the inner surface of the third corner portion C1-3, and the sixth rib 230 An adhesive may be applied between at least one of the outer side of -2) and the other side of the third magnet 330 .

The fourth protrusion 824 may be disposed under the seventh rib 240-1 beyond the eighth rib 240-2. That is, the upper surface of the fourth protrusion 824 may be disposed to face the lower surface of the seventh rib 240 - 1 . This is because the seventh rib 240 - 1 protrudes outward than the eighth rib 240 - 2 . The upper surface of the fourth protrusion 824 and the lower surface of the seventh rib 240 - 1 may be coupled to each other. In this case, an adhesive may be applied between the upper surface of the fourth protrusion 824 and the lower surface of the seventh rib 240 - 1 .

The fourth protrusion 824 has an inner surface of the fourth side plate 124, an inner surface of the first side plate 121, an inner surface of the fourth corner portion C1-4, and an eighth rib 240-2. It may be disposed to face the outer surface and the other side of the fourth magnet 340 . The side surface of the fourth protrusion 824 is an inner surface of the fourth side plate 124 , an inner surface of the first side plate 121 , an inner surface of the fourth corner portion C1-4, and an eighth rib 240-2. It may be combined with the outer surface of the and the other side of the fourth magnet 340 . In this case, the side surface of the fourth protrusion 824 and the inner surface of the fourth side plate 124 , the inner surface of the first side plate 121 , the inner surface of the fourth corner part C1-4, and the eighth rib 240 An adhesive may be applied between at least one of the outer surface of -2) and the other side of the fourth magnet 340 .

In summary, by the first protrusion 821 , the second protrusion 822 , the third protrusion 823 , and the fourth protrusion 824 , the housing 200 and the magnet 300 are integrally fixed. can

First extension 831 , second extension 832 , third extension 833 , fourth extension 834 , fifth extension 835 , sixth extension 836 , seventh The extension 837 and the eighth extension 838 may protrude upward from the upper surface of the base 800 . However, the height of the extension of the base 800 is significantly lower than the height of the protrusion of the base 800 .

The first extension portion 831 may be disposed along the fifth side portion 811 from the first protrusion portion 821 . An outer surface of the first extension 831 and an inner surface of the first side plate 121 may face each other. An inclined surface inclined downward may be formed at an end of the first extension portion 831 . This is to prevent contact with the first stopper 420 .

The second extension portion 832 may be disposed along the sixth side portion 812 from the first protrusion portion 821 . An outer surface of the second extension portion 832 and an inner surface of the second side plate 122 may face each other. An inclined surface inclined downward may be formed at the end of the second extension portion 832 . This is to prevent contact with the second stopper 430 .

The third extension 833 may be disposed along the sixth side portion 812 from the second protrusion 822 . An outer surface of the third extension 833 and an inner surface of the second side plate 122 may face each other. An inclined surface inclined downward may be formed at an end of the third extension portion 833 . This is to prevent contact with the second stopper 430 .

The fourth extension 834 may be disposed along the seventh side portion 813 in the second protrusion 822 . An outer surface of the fourth extension 834 and an inner surface of the third side plate 123 may face each other. An inclined surface inclined downward may be formed at the end of the fourth extension 834 . This is to prevent contact with the third stopper.

The fifth extension portion 835 may be disposed along the seventh side portion 813 from the third protrusion portion 823 . An outer surface of the fifth extension portion 835 and an inner surface of the third side plate 123 may face each other. An inclined surface inclined downward may be formed at the end of the fifth extension portion 835 . This is to prevent contact with the third stopper.

The sixth extension 836 may be disposed along the eighth side portion 814 in the third protrusion 823 . The outer surface of the sixth extension portion 836 and the inner surface of the fourth side plate 124 may face each other. An inclined surface inclined downward may be formed at the end of the sixth extension portion 836 . This is to prevent contact with the fourth stopper.

The seventh extension portion 837 may be disposed along the eighth side portion 814 in the fourth protrusion portion 824 . An outer surface of the seventh extension portion 837 and an inner surface of the fourth side plate 124 may face each other. An inclined surface inclined downward may be formed at the end of the seventh extension portion 837 . This is to prevent contact with the fourth stopper.

The eighth extension 838 may be disposed along the fifth side portion 811 in the fourth protrusion 824 . The outer surface of the eighth extension part 838 and the inner surface of the first side plate 121 may face each other. An inclined surface inclined downward may be formed at the end of the eighth extension portion 838 . This is to prevent contact with the first stopper 420 .

A gap may exist between the first extension part 831 and the eighth extension part 838 . A first blocking protrusion 841 may be disposed between the first extension part 831 and the eighth extension part 838 . A gap may exist between the second extension part 832 and the third extension part 833 . A second blocking protrusion 842 may be disposed between the second extension part 832 and the third extension part 833 . A gap may exist between the fourth extension 834 and the fifth extension 835 . A third blocking protrusion 843 may be disposed between the fourth extension 834 and the fifth extension 835 . A gap may exist between the sixth extension part 836 and the seventh extension part 837 . A fourth blocking protrusion 844 may be disposed between the sixth extension part 836 and the seventh extension part 837 .

The plurality of extension portions of the base 800 may not be coupled to the plurality of side plates 122 of the cover 100 by an adhesive. This is because the plurality of extension portions of the base 800 perform a function of a blocking jaw, not a fixing function. In detail, the plurality of extension portions of the base 800 have a function of preventing the adhesive used for bonding the plurality of side plates of the cover 100 and the plurality of sides of the base 800 from flowing into the inside of the base 800 . can be done This is because, if the adhesive flows into the hole of the base 800 , it may contaminate the image sensor or filter.

The first blocking projection 841 , the second blocking projection 842 , the third blocking projection 843 , and the fourth blocking projection 844 may protrude upward from the upper surface of the base 800 . The first blocking projection 841, the second blocking projection 842, the third blocking projection 843, and the fourth blocking projection 844, respectively, the first stopper 420, the second stopper 430, the third stopper and overlapping each of the fourth stoppers in the optical axis direction (up and down direction), it is possible to limit the downward movement of the bobbin 200 .

The first recessed part 841 and the second recessed part 842 may be recessed inward from the outer surface of the seventh side part 813 . The first recessed part 841 and the second recessed part 842 may be spaced apart from each other. A first terminal 740 - 1 may be disposed in the first recessed part 841 , and a second terminal 740 - 2 may be disposed in the second recessed part 842 . The first recessed part 841 and the second recessed part 842 may expose the first terminal 740 - 1 and the second terminal 740 - 2 to the outside, and guide the first terminal 740 - 1 and the second terminal 740 - 2 to the substrate.

Hereinafter, the lens driving device 2000 of the second embodiment will be described with reference to the drawings. 10 is a perspective view showing the lens driving device of the second embodiment, Fig. 11 is an exploded perspective view showing the lens driving device of the second embodiment, and Fig. 12 is the lens driving device of the second embodiment taken along line A-A'. Fig. 13 is a cross-sectional view showing the lens driving device of the second embodiment along the line B-B', Fig. 14 is a perspective view showing the cover of the second embodiment, and Fig. 15 is the second embodiment It is a perspective view showing the magnet and the housing of the embodiment, and reference numeral 16 is a perspective view showing the base of the second embodiment.

The lens driving device 2000 of this second embodiment includes a cover 1100, a housing 1200, a magnet 1300, a bobbin 1400, a coil 1500, a first elastic member 1600, a second elastic member ( 1700 ) and a base 1800 .

The lens driving device 1000 of the first embodiment may be analogously applied to the lens driving device 2000 of the second embodiment. However, the lens driving device 2000 of the second embodiment may have the following differences from the lens driving device 1000 of the first embodiment.

In the cover 1100, the curvature of the first corner part C1-1 and the second corner part C1-2 is greater than the curvature of the third corner part C1-3 and the fourth corner part C1-4. can be (see FIG. 10).

In the housing 1200, the first rib 1210-1 and the second rib 1220-2 may have the same position and shape, and the third rib 1220-1 and the fourth rib 1220-2 may It may have the same position and shape, the fifth rib 1230-1 and the sixth rib 1230-2 may have the same position and shape, and the seventh rib 1240-1 and the eighth rib 1240 -2) may have the same position and shape.

That is, the first rib 1210-1 may not protrude outward than the second rib 1220-2, and the third rib 1220-1 may not protrude outward than the fourth rib 1220-2. may not, and the fifth rib 1230-1 may not protrude outward than the sixth rib 1230-2, and the seventh rib 1240-1 may be outwardly than the eighth rib 1240-2. may not protrude.

A first chamfered surface and a second chamfered surface may not be formed on the first rib 1210 - 1 and the second rib 1210 - 2 . A curvature may be formed at corners of the first rib 1210 - 1 and the second rib 1210 - 2 . That is, the corner portions of the first rib 1210 - 1 and the second rib 1210 - 2 may be rounded.

The third chamfered surface and the fourth chamfered surface may not be formed on the third rib 1220 - 1 and the fourth rib 1220 - 2 . A curvature may be formed at corners of the third rib 1220 - 1 and the fourth rib 1220 - 2 . That is, the corner portions of the third rib 1220 - 1 and the fourth rib 1220 - 2 may be rounded.

Like the lens driving apparatus 1000 of the first embodiment, a first rib 1210 - 1 and a second rib 1210 - 2 may be positioned between the first side portion 1210 and the second side portion 1220 . . Also, a third rib 1220 - 1 and a fourth rib 1220 - 2 may be positioned between the second side portion 1220 and the third side portion 1230 . Also, a fifth rib 1230 - 1 and a sixth rib 1230 - 2 may be positioned between the third side portion 1230 and the fourth side portion 1240 . In addition, a seventh rib 1240 - 1 and an eighth rib 1240 - 2 may be positioned between the fourth side portion 1240 and the first side portion 1210 .

The first magnet 1310 , the second magnet 1320 , the third magnet 1330 , and the fourth magnet 1340 may have an approximately semi-circular column shape. That is, in the first magnet 1310 , the second magnet 1320 , the third magnet 1330 , and the fourth magnet 1340 , one side facing the coil 1500 may be flat, and on the outside of the one side The positioned other side surface may be a rounded surface curved outwardly.

In the base 1800, the fifth corner portion C2-1 and the sixth corner portion C2-2 are wider and larger than the seventh corner portion C2-3 and the eighth corner portion C2-4. can be

The protrusion may not exist in the fifth corner part C2-1 and the sixth corner part C2-2. A third protrusion 1823 may be present in the seventh corner portion C2-3. A fourth protrusion 1824 may be present in the eighth corner portion C2 - 4 .

The third protrusion 1823 may be located outside the fifth rib 1230 - 1 and the sixth rib 1230 - 2 . That is, the third protrusion 1823 may not overlap the fifth rib 1230 - 1 and the sixth rib 1230 - 2 in the vertical direction. An inner surface of the third protrusion 1823 may face an outer surface of the third magnet 1330 . An adhesive may be applied between the inner surface of the third protrusion 1823 and the outer surface of the third magnet 1330 . An outer surface of the third protrusion 1823 may face the third corner portion C1-3 of the cover 1100 . An adhesive may be applied between the outer surface of the third protrusion 1823 and the third corner portion C1-3 of the cover 1100 .

The fourth protrusion 1824 may be positioned outside the seventh ribs 1240 - 1 and the eighth ribs 1240 - 2 . That is, the fourth protrusion 1824 may not overlap the seventh ribs 1240 - 1 and the eighth ribs 1240 - 2 in the vertical direction. An inner surface of the fourth protrusion 1824 may face an outer surface of the fourth magnet 1340 . An adhesive may be applied between the inner surface of the fourth protrusion 1824 and the outer surface of the fourth magnet 1340 . An outer surface of the fourth protrusion 1824 may face the fourth corner portion C1-4 of the cover 1100 . An adhesive may be applied between the outer surface of the fourth protrusion 1824 and the fourth corner portion C1-4 of the cover 1100 .

An edge of the base 1800 protrudes upward, and a ring-shaped protrusion wall 1830 may be positioned. The protrusion wall 1830 may be integrally formed with the third protrusion 1823 and the fourth protrusion 1824 . The protruding wall 1830 may block an adhesive from being introduced into the cover 1100 and the base 1800 when the cover 1100 and the base 1800 are adhered.

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 specified, 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. Terms commonly used, such as those 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.

Claims (15)

a cover including a top plate, a side plate extending downwardly from the top plate;
a housing disposed inside the cover;
a bobbin disposed inside the housing;
a coil disposed on the bobbin;
a magnet disposed in the housing and facing the coil; and
a base disposed under the housing;
The side plate of the cover includes a first side plate, a second side plate adjacent to the first side plate, and a first corner portion disposed between the first side plate and the second side plate,
The housing includes a first side facing the first side plate, a second side facing the second side plate, a first rib connecting the first side and the second side, and a second rib; ,
The first rib and the second rib are disposed to be spaced apart,
The magnet is disposed between the first rib and the second rib. According to claim 1,
The first rib protrudes in a direction in which the first corner portion is located than the second rib,
The magnet includes a first magnet and a second magnet,
The first magnet includes a first surface opposite to the coil, and a second surface opposite to the first surface and opposite to the first corner portion of the cover. 3. The method of claim 2,
The side plate of the cover includes a third side plate connected to the second side plate, and a second corner part disposed between the second side plate and the third side plate,
The base includes a first protrusion protruding from the upper surface,
An upper surface of the first protrusion faces the first rib,
Side surfaces of the first protrusion are opposite to the second side plate, the third side plate, the second corner part, and the second magnet of the cover. 4. The method of claim 3,
Between the upper surface of the first protrusion and the first rib, between the side surface of the first protrusion and the second magnet, between the side surface of the first protrusion and the first side plate, the side surface of the first protrusion and the An adhesive is applied between at least one of the second side plates. 4. The method of claim 3,
The first rib and the first protrusion at least partially overlap in the optical axis direction, and the second rib and the first protrusion do not overlap in the optical axis direction. According to claim 1,
The first rib includes a first chamfered surface facing the first corner portion, the second rib includes a second chamfered surface facing the first corner portion, and at the center of the first chamfered surface The shortest distance to the inner surface of the edge of the first corner portion is shorter than the shortest distance from the center of the second chamfer to the inner surface of the edge of the first corner portion. According to claim 1,
The coil is located below the outer peripheral surface of the bobbin,
The bobbin includes a first stopper disposed below the coil on the outer circumferential surface,
The housing is disposed on the first side, accommodating at least a portion of the first stopper, and includes a first accommodating portion having a groove or hole shape,
The first stopper protrudes in a direction in which the first side plate is located,
A lens driving device in which rotation of the bobbin with respect to an optical axis is blocked by the first stopper and the first accommodating part. According to claim 1,
The bobbin includes a first stopper disposed below the coil on the outer circumferential surface,
The base protrudes upward, and at least a portion of the first stopper includes a first blocking protrusion overlapping in the optical axis direction,
The first stopper protrudes in a direction in which the first side plate is located,
A lens driving device in which downward movement of the bobbin is blocked by the first stopper and the first blocking protrusion. 3. The method of claim 2,
The base is disposed under the cover,
An adhesive is disposed between the side plate of the cover and the base. 10. The method of claim 9,
The base includes a first extension that protrudes upward and extends to one side from the first protrusion, and a second extension that protrudes upward and extends from the first protrusion to the other side,
An outer surface of the first extension portion and an inner surface of the first side plate are opposed to each other, and an outer surface of the second extension portion and an inner surface of the second side plate are opposed to each other. a cover including a top plate, a side plate extending downwardly from the top plate;
a housing disposed inside the cover;
a bobbin disposed inside the housing;
a coil disposed on an outer circumferential surface of the bobbin;
a magnet disposed in the housing and facing the coil; and
It is disposed under the housing and includes a base including a first protrusion protruding upward,
The side plate of the cover includes a first side plate, a second side plate adjacent to the first side plate, and a first corner portion disposed between the first side plate and the second side plate,
The housing includes a first side facing the first side plate, a second side facing the second side plate, a first rib connecting the first side and the second side, and a second rib; ,
The first rib and the second rib are disposed to be spaced apart,
The magnet is disposed between the first rib and the second rib. 12. The method of claim 11,
The first rib protrudes in a direction in which the first corner portion is located than the second rib,
The magnet is disposed between the first rib and the second rib,
An upper surface of the first protrusion faces the first rib, and side surfaces of the cover face the first side plate, the second side plate, the first corner part, and the magnet. The lens driving device of claim 1;
a lens module disposed on the lens driving device;
a substrate disposed under the lens driving device; and
A camera module including an image sensor disposed on the substrate. main body;
a display unit located on one side of the body; and
An optical device comprising the camera module of claim 13 electrically connected to the display unit. a cover including a top plate, a side plate extending downwardly from the top plate;
a housing disposed inside the cover;
a bobbin disposed inside the housing;
a coil disposed on the bobbin;
a magnet disposed in the housing and facing the coil; and
and a base disposed under the housing.

Images