KR20220018337A - Carrier of Camera actuator and Camera module containing the same - Google Patents

Abstract

Disclosed are a carrier of a camera actuator and a camera module including the same. According to one aspect of the present invention, the carrier of the camera actuator includes a carrier unit having a driving magnet mounted on the outer surface and a damper unit coupled to the carrier unit and provided with a plurality of supporting structures made of elastic substances and magnetic substances. A back yoke integrally formed with the support structure of the damper unit is inserted into the carrier unit to face the driving magnet.

Description

A carrier of a camera actuator and a camera module including the same

The present invention relates to a carrier for a camera actuator, and in particular, a carrier for a camera actuator that implements zoom or auto focusing by moving an optical unit including a plurality of optical lenses in a camera module in a specific direction. And it relates to a camera module including the same.

The camera lens module mounted on the mobile is changed to a structure equipped with various additional functions such as a zoom function and an auto focusing function in order to meet the recent trend toward high-pixel and high-function based on user needs. In addition, an actuator is mounted on the camera module to implement the Zoom function or Auto Focusing function.

The actuator mounted on the camera module for realization of zoom or auto-focus functions is largely divided into VCM (Voice Coil Motor) type using the interaction principle of magnetic field and electric field, and lens through feedback control based on the position value recognized by the sensor. It can be classified as an encoding type that automatically adjusts the lifting position of the assembly. In this case, the VCM and the encoding type can be clearly distinguished from the viewpoint of control.

The VCM type is advantageous in terms of cost compared to the encoding type, but has a disadvantage in that the driving precision is relatively low. On the other hand, the encoding type has disadvantages in terms of cost, such as an increase in manufacturing cost as parts such as sensors are required. have.

However, in terms of implementing zoom or auto-focus control using the force (Lorentz's force) generated by the interaction of the magnetic field and the electric field, the basic operating mechanism of the VCM type and the encoding type is the same, and there is no significant difference in the basic configuration. A conventional VCM type or encoding type camera actuator may be composed of a movable part mounted with a magnet and a fixed part configured with a coil.

In such a camera actuator, the movable part moves relative to the fixed part in the optical axis direction by the interaction between the electric field generated by the coil from the externally applied current and the magnetic phase of the magnet, and the movable part with respect to the fixed part By adjusting the separation distance of the movable parts with respect to the image sensor by the relative movement of

1 is an exploded perspective view of the movable part, which is a part of a conventional encoding type camera actuator.

Referring to FIG. 1 , the movable part 100 includes an optical unit 110 and a carrier 120 to which the optical unit 110 is coupled and a magnet mounting part 125 is formed on one side thereof. The optical unit 110 includes a lens group composed of a plurality of optical lenses and a lens barrel for mounting them, and in the center of the carrier 120, an opening (hole, sign omitted) is formed. And the magnet mounting unit 125 is mounted with a driving magnet 130 .

In some cases, the back yoke 140 may be mounted on the magnet mounting unit 125 of the carrier 120 together with the driving magnet 130 . At this time, the main role of the back yoke 140 is to focus the electric field generated by the coil (not shown) of the fixed part to the driving magnet 130 side, and the back yoke 140 is first mounted on the magnet mounting unit 125 . and the driving magnet 130 is mounted on the magnet mounting unit 125 in a structure that covers the back yoke 140 .

In mounting the driving magnet 130 alone or together with the driving magnet 130 on the back yoke 140 on the magnet mounting unit 125, an adhesive method is mainly used. In this case, as the adhesive, a thermosetting resin such as epoxy or a UV curable resin having a property of curing when UV (ultraviolet ray) is irradiated, such as a polyester-acrylate resin, etc. may be used.

However, in the conventional configuration in which a magnet alone or a driving magnet and a yoke are simply attached to the magnet mounting part, the weight of the optical unit has to be increased according to the market demand for more and more high-performance cameras. As the weight of the optical unit is increased, the amount of impact transferred to the carrier in case of a drop impact increases, and a durability problem in which the magnet is easily removed has been pointed out.

Korean Patent Registration No. 10-1978946 (Announcement Date: 2019.05.15)

The technical problem to be solved by the present invention is a conventional durability problem that is concerned when the weight of the optical unit is increased in accordance with the market demand for high-pixel and high-magnification optical zoom (the problem of the magnet falling off from the carrier during a fall impact) ) is to provide a carrier of a camera actuator that can clearly solve the problem and a camera module including the same.

According to one aspect of the present invention as a means of solving the problem,

Carrier part on which the driving magnet is mounted on the outer surface; and

and a damper unit coupled to the carrier unit and having a plurality of elastic and magnetic support members;

There is provided a carrier of a camera actuator that is inserted into the carrier so that the back yoke integrally formed with the support of the damper is opposed to the driving magnet.

Here, a concave portion may be formed on the outer surface of the carrier on which the driving magnet is mounted, and the back yoke integrally configured with the support may be inserted into the concave portion.

In addition, the carrier part may have at least two or more through-holes around the central opening to which the optical unit is coupled, and the elastic body of the damper part may be coupled to the through-hole to protrude upward and downward of the carrier part.

Preferably, one through-hole is formed in each of the edge regions of the carrier part, and the elastic body may be configured to match and couple to each of the through-holes one by one.

In addition, the support member is a rectangular ring-shaped or annular plate-shaped body and is seated and fixed on the upper surface of the carrier part around the central opening, and the elastic body may be integrally attached to a predetermined position of the support member through insert molding.

In this case, at least one or more binding hooks are protruded from the outer surface of the carrier part for coupling the support and the carrier part, and the binding pieces may be formed in the support part to correspond to each of the binding hooks.

In addition, an auxiliary magnet for position sensing is further mounted on the outer surface of the carrier unit, and an auxiliary back yoke integrally formed with an elastic support member of the damper unit may be inserted into the carrier unit to face the auxiliary magnet.

In this case, an auxiliary concave portion may be formed on the outer surface of the carrier on which the auxiliary magnet is mounted, and the auxiliary back yoke integrally formed with the support may be inserted into the auxiliary concave portion.

Preferably, the magnet mounting portion of the carrier on which the driving magnet is mounted is formed in an open structure with an open upper end, and a part of the support is configured to cover the open portion of the upper end of the magnet mounting unit so as to come into contact with a part of the driving magnet. can be

According to another aspect of the present invention as a means of solving the problem,

a movable part equipped with an optical unit and having a carrier according to one side of which a driving magnet is mounted on an outer surface;

a fixed part including a coil disposed to face the driving magnet to form one magnetic circuit together with the driving magnet, and a yoke unit disposed to correspond to the driving magnet for generating attractive force; and

It provides a camera module including; a plurality of ball members interposed between the movable part and the fixed part for driving the movable part in the optical axis direction with respect to the fixed part.

According to an embodiment of the present invention, the driving magnet is not fixed to the magnet mounting part only with an adhesive, but an adhesive force by an adhesive, a binding force according to partial contact (surface contact) with the damper part, and the damper part integrally. Since the attractive force with the back yoke acts complexly to constrain the driving magnet, the driving magnet can be reliably prevented from falling off.

As a result, it is possible to reliably respond to the conventional durability problem caused by an increase in the weight of the optical unit according to the increase in pixels and high magnification.

1 is an exploded perspective view of a movable part (carrier) that is a part of a conventional encoding type camera actuator.
2 is an exploded perspective view of a camera actuator carrier according to an embodiment of the present invention.
Figure 3 is a partially exploded perspective view of the carrier shown in Figure 2;
Figure 4 is a perspective view of the combined carrier shown in Figure 3;
Figure 5 is a cross-sectional view of the carrier of Figure 4 in the direction AA.
6 is a cross-sectional view of the carrier of FIG. 4 viewed from the line BB.
7 is a cross-sectional view of the carrier of FIG. 4 viewed from the CC line.
8 is a partially exploded perspective view of a camera actuator carrier according to another embodiment of the present invention.
9 is a combined perspective view of the carrier shown in FIG.
10 is an exploded perspective view of a camera module including the carrier of FIGS. 2 to 9;

Hereinafter, preferred embodiments of the present invention will be described in detail.

Terms used in the specification are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and includes one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof does not preclude the possibility of addition.

Also, terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

In addition, terms such as “…unit”, “…unit”, “…module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. can

An embodiment to be described later is applied to a “camera” of a “portable user device”, and the portable terminal refers to a portable user device. However, these are only general terms, and the present embodiment includes a mobile phone, a palm sized personal computer (PC), a personal communication system (PCS), a personal digital assistant (PDA), and a portable PC. (HPC: Hand-held PC), smart phone, wireless LAN (Local Area Network) terminal, laptop computer, netbook, tablet personal computer, non-mobile game console, VR device (Virtual Reality) ), vehicles, etc., can be applied to various devices or fields.

Therefore, the use of the term “portable user equipment” should not be used to limit the application of this embodiment to a specific type of device.

In the description with reference to the accompanying drawings, the same reference numerals will be assigned to the same components for the same components, and overlapping descriptions thereof will be omitted. And, in the description of the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is an exploded perspective view of a camera actuator carrier according to an embodiment of the present invention, and FIG. 3 is a partially exploded perspective view of the carrier shown in FIG. 2 . And FIG. 4 is a combined perspective view of the carrier shown in FIG. 3 .

The carrier 1 of the camera actuator according to an embodiment of the present invention is one of the key parts required to implement zoom and auto-focusing among many parts constituting the camera mounted on the aforementioned portable user device. . The carrier 1 of the camera actuator mounts the optical unit and is arranged to be movable in the optical axis direction in the case including the housing and the base.

With reference to the drawings, it will be looked at in more detail.

2 to 4 , the carrier 1 of the camera actuator according to an embodiment of the present invention includes a carrier unit 10 on which an optical unit is mounted. It also includes a driving magnet 20 mounted on the carrier part 10 and a damper part 30 coupled to the carrier part 10 .

A magnet mounting part 14 is formed in a predetermined size on an outer surface, preferably one side, of the carrier part 10 , and the driving magnet 20 is formed in a size corresponding to the magnet mounting part 14 .

An opening 12 is formed in the center of the carrier part 10 with a predetermined size (a size corresponding to the outer shape of the optical unit), and an optical unit (not shown) is coupled to the opening 12 to remove the movable part of the camera module. will make up

The movable part makes a relative motion in the optical axis direction with respect to the fixed part according to a driving command, and the separation distance of the movable part with respect to the image sensor is adjusted by such movement, whereby zoom or automatic focus adjustment is implemented.

For reference, the optical unit mounted on the opening 12 in the center of the carrier part 10 may be composed of a lens barrel and a lens group composed of a plurality of lenses accommodated in the lens barrel, wherein each lens is the same or different optical properties such as focal length and refractive index.

The carrier unit 10 may have a hexahedral shape as an example in the drawings ( FIGS. 2 to 4 ), and an opening 12 (a hole through which the optical unit is coupled) with a predetermined size in the center is formed. Of course, depending on the shape or specification of the camera, the shape of the outer surface may be a cylindrical shape, and the shape in a plan view may be a triangular or more polygonal shape rather than a square, so it is not limited to the exemplified shape.

At least two through-holes 13 are formed around the central opening 12 of the carrier part 10 , and an elastic body 32 to be described later constituting the damper part 30 is coupled to the through-hole 13 . to protrude upward and downward of the carrier part 10 .

Preferably, the through-holes 13 may be formed one at a time in each corner region of the carrier part 10, and the elastic body 32 may be configured to match and couple to each of the through-holes 13 thus formed. have.

A driving magnet 20 is mounted on the magnet mounting unit 14 formed on one side of the carrier unit 10 . The driving magnet 20 is disposed to face the driving coil of the fixed part, and the carrier unit 10 is moved in the optical axis direction by the interaction of the driving magnet 20 and the coil disposed to face each other when power is applied to the coil. A driving force is generated, which enables zoom and auto focus adjustment.

The driving magnet 20 , which is a component that generates driving force for zoom and automatic focus control, is fixed to the mounting surface 140 of the magnet mounting unit 14 with an adhesive. In this case, as the adhesive, a thermosetting resin such as epoxy or a UV curable resin having a property of curing when UV (ultraviolet ray) is irradiated, such as a polyester-acrylate resin, etc. may be used.

Of course, the driving magnet 20 is not fixed to the magnet mounting unit 14 only with an adhesive. In the carrier 1 of the camera actuator according to the embodiment of the present invention, in addition to the adhesive force by the adhesive, the binding force according to the partial contact (surface contact) with the damper part 30, which will be described later, and the damper part 30 integrated into the carrier 1 By further adding an attractive force with the back yoke 34 composed of

The damper part 30, which is one of the main components constituting the carrier 1 according to an embodiment of the present invention, is coupled to the carrier part 10 described above. When the damper part 30 moves excessively in the optical axis direction (up and down direction in the drawing) outside the prescribed stroke range due to an external impact, etc., the carrier part 30 collides with a neighboring fixed part, for example, the housing or base described above, It plays a major role in absorbing / mitigating the impact.

The damper unit 30 applied to this embodiment is made of a magnetic material such as SUS for supporting the plurality of elastic bodies 32 and the plurality of elastic bodies 32 at the same time, as illustrated in the drawings ( FIGS. 2 to 4 ). Earth 38 is included. The elastic body 32 may be made of soft natural rubber, synthetic resin rubber, silicone, or the like, and the support 38 may be configured in a rectangular ring shape or annular thin plate shape.

The support 38 made of a magnetic material may be fixed to the carrier unit 10 in a structure in close contact with the upper surface of the carrier unit 10 around the above-described opening 12, the hole through which the optical unit is coupled. The plurality of elastic bodies 32 may be integrally provided through insert molding at a predetermined position of the support 38 (a position that can be matched and coupled one by one to the through hole 13 of the carrier portion 10 described above). have.

2 to 4, reference numerals 19 and 39 refer to means for firmly binding the support 38 to the carrier part 10 so as not to be separated from each other, and the support 38 and the carrier part ( At least one binding hook 19 is protruded from the outer surface of the carrier part 10 for coupling 10), and the support member 38 has a binding piece ( 39) can be formed.

As such, the binding hook 19 and the binding piece 39, which function as a means for solid binding between the two components (carrier part and the support member), are, as illustrated in the drawings ( FIGS. 2 to 4 ), the carrier part Among the various aspects of (10), it is preferable that the magnet mounting portion 14 is disposed one by one on all sides except for the formed side and is configured to generate a strong binding force, but the number or location is not limited to the illustrated number or location .

5 is a cross-sectional view illustrating a portion in which an elastic body is coupled to a through hole of the carrier part, and is a cross-sectional view of the carrier of FIG. 4 taken along the line A-A.

As shown in FIG. 5 , the elastic body 32 may be coupled to the through-hole 13 of the aforementioned carrier part 10 and protrude to the upper and lower portions of the carrier part 10 at a predetermined height. Accordingly, when the carrier part 10 excessively moves in the optical axis direction (up and down direction in the drawing) out of the predetermined stroke range, the impact caused by the collision with the fixed part (eg, the aforementioned housing or base) can be absorbed/reduced.

6 is a cross-sectional view of the carrier shown in FIG. 4 viewed from the line B-B.

As shown in FIG. 6 and previous FIGS. 2 to 4 , the back yoke 34 is integrally provided with the support 38 . The back yoke 34 is integrally extended from one corner or edge of the support 38 , and may be bent 90 degrees downward with respect to the upper surface of the support 38 , and the magnet mounting unit 14 ) may be coupled to the carrier part 10 in a structure that is inserted into the recessed part 16 formed on a part of the mounting surface 140 .

On the other hand, FIG. 7 is a cross-sectional view of the carrier shown in FIG. 4 as viewed from the CC line, and as shown in FIGS. 7 and 2 to 4 above, the above-described magnet mounting unit 14 is an open structure with an open top. A portion of the support 38 may cover an open portion of the upper end of the magnet mounting unit 14 so as to come into contact with a portion (upper surface) of the driving magnet 20 mounted therein.

According to this configuration, the adhesive force with the mounting surface 140 of the magnet mounting unit 14 by an adhesive to the driving magnet 20 mounted on the magnet mounting unit 14 and the interaction with the back yoke 34 Due to the attractive force and mechanical restraining force of the support member 38, the driving magnet 20 can be firmly fixed to the magnet mounting unit 14, and thereby The dropout problem can be definitely solved.

8 is a partially exploded perspective view of a camera actuator carrier according to another embodiment of the present invention, and FIG. 9 is a combined perspective view of the carrier shown in FIG. 8 .

The carrier 1 of the camera actuator according to another embodiment of the present invention shown in FIGS. 8 and 9 is an auxiliary magnet mounting unit 17 on the adjacent side of the magnet mounting unit 14 in the configuration of the above-described embodiment. It is further formed, and is the same as the configuration of the above-described embodiment, except that the auxiliary magnet 22 is further attached thereto. Therefore, hereinafter, redundant description of the same configuration as the previous configuration will be omitted.

The carrier 1 of the camera actuator according to another embodiment of the present invention includes an auxiliary magnet mounting unit 17 formed on an adjacent side of the magnet mounting unit 14 formed in the carrier unit 10 . At this time, the auxiliary magnet mounting unit 17 may be formed to have a smaller size than the magnet mounting unit 14 at a predetermined interval other than the magnet mounting unit 14 as illustrated in the drawings ( FIGS. 7 and 8 ).

On the mounting surface 170 of the auxiliary magnet mounting portion 17, the auxiliary concave portion 18 with a size smaller than that of the auxiliary magnet mounting portion 17 is recessed to a predetermined depth so as to face the carrier portion 10 inside, the An auxiliary back yoke 36 integrally extending from the support 38 of the damper unit 30 may be inserted into the auxiliary concave portion 18 . Preferably, the auxiliary back yoke 36 may be configured to be bent 90 degrees downward with respect to the upper surface of the support 38 .

In a state in which the auxiliary back yoke 36 is inserted into the auxiliary concave portion 18 , the auxiliary magnet 22 is mounted on the auxiliary magnet mounting unit 17 . At this time, the auxiliary magnet 22 is not involved in generating a driving force for moving the carrier 1 in the optical axis direction like the driving magnet 20 described above, but when the carrier 1 moves in the optical axis direction. It may be for position sensing for detecting the position in real time.

As such, in the case of a configuration in which the auxiliary magnet 22 for position sensing is coupled separately from the driving magnet 20, a Hall sensor may be configured to face the auxiliary magnet 22 in a fixed part of the camera actuator. . In this case, based on the position data of the auxiliary magnet 22 recognized by the hall sensor, the position in the optical axis direction of the carrier 1 can be grasped in real time to control the feedback (Feed Back), thereby increasing the control precision.

The conventional configuration in which a magnet alone or a driving magnet and a yoke are simply adhered to the magnet mounting part, in the recent trend in which the weight of the optical unit has to be increased according to the market demand for more and more high-performance cameras, optical As the weight of the unit is increased, the amount of impact transferred to the carrier during a drop impact increases, and there is a problem in durability such as the magnet easily falling off.

On the other hand, according to an embodiment of the present invention, the driving magnet is not fixed to the magnet mounting part only with an adhesive, but an adhesive force by an adhesive, a binding force due to partial contact (surface contact) with the damper part, and the damper part integrally Since the attractive force with the configured back yoke acts in a complex manner to constrain the driving magnet, the driving magnet can be reliably prevented from falling off.

As a result, it is possible to reliably respond to the conventional durability problem caused by an increase in the weight of the optical unit according to the increase in pixels and high magnification.

10 is an exploded perspective view of a camera module including a carrier according to an aspect described above.

Referring to Figure 10, the camera module (CM) according to another aspect of the present invention is largely, the movable part (3) and the fixed part (4), and interposed between the movable part (3) and the fixed part (4) It includes a plurality of ball members (5). Here, the fixed part 4 and the movable part 3 are relative concepts, the fixed part 4 means a part fixed to the movable part 3, and the movable part 3 is the fixed part 4 ) means the part that is displaced in the optical axis direction.

The movable part 3 includes a carrier 1 and an optical unit 2 . The carrier 1 may be the carrier 1 according to the above-described one side in which the driving magnet 20 is mounted on the outer surface, and the optical unit 2 is mounted in the opening 12 in the center of the carrier 1 . The optical unit 2 may be composed of a lens barrel and a lens group composed of a plurality of lenses accommodated in the lens barrel, wherein each lens may have the same or different optical properties such as focal length and refractive index.

This movable part (3) is accommodated in the fixed part (4). Preferably, it may be accommodated in the fixed part 4 so as to perform a translational movement along the optical axis direction within the fixed part 4 . The fixed part 4 includes a coil 40 corresponding to the driving magnet 20, and the driving magnet 20 and the movable part 3 are aligned at a predetermined neutral position in the optical axis direction in a state in which power is not applied by generating an attractive force. It includes a yoke portion 42 that functions to be able to be.

The coil 40 may be disposed on the fixed part 4 to face the driving magnet 20 at a predetermined distance, and the yoke part 42 is disposed at the rear of the coil 40 to face the driving magnet 20 . may be disposed to face. At this time, one magnetic circuit is constituted by the driving magnet 20 and the coil 40 facing each other, and the movable part 3 is moved in the optical axis direction with respect to the fixed part 4 by the driving force generated by the magnetic circuit. can be driven

The coil 40 may be electrically mounted on a substrate unit 41 disposed in an opening on one side of the fixed part 4 , and when the substrate unit 41 applies power to the coil 40 , the coil 40 . As the driving force is generated by the interaction between the generated electric field and the magnetic field of the driving magnet 20, the movable part 3 is driven in the optical axis direction with respect to the fixed part 4, and as a result, the zoom or automatic Auto Focus is implemented.

The aforementioned Hall sensor HS together with the coil 40 may be mounted on the substrate 41 . The Hall sensor HS detects the position of the driving magnet 20 or the auxiliary magnet using the Hall effect, and a drive chip (not shown) is a movable part based on the sensing information of the Hall sensor HS. The position in the optical axis direction of (3) is recognized, and the magnitude and direction of power to be supplied to the coil 40 are determined in real time based on this.

That is, the drive chip recognizes the optical axis direction position of the movable part 3 from the signal output by the hall sensor (HS), and includes the magnitude and direction of power applied to the coil 40 based on the recognized position information A control value is determined, and the zoom and autofocus functions are implemented by feedback-controlling the optical axis direction position of the movable part 3 with the determined control value.

A plurality of ball members 5 may be interposed between the movable part 3 and the fixed part 4 . When the movable part 3 is driven in the optical axis direction with respect to the fixed part 4, which is a relative stationary, with the driving force generated by the magnetic circuit, the movable part 3 and the fixed part 4 are It guides the movement in the direction of the optical axis to be smooth and stable while rolling between them.

When driving the fixed part 4 with respect to the movable part 3 in the optical axis direction, each of the movable part 3 and the fixed part 4 faces each other so that the ball members 5 can roll within a predetermined section without separation. At least two or more pairs of ball rails 50 and 52 may be formed as a pair. At this time, each of the ball rails 50 and 52 may be formed to have a predetermined length with respect to the direction in which the movable part 3 is driven with respect to the fixed part 4 , that is, the optical axis direction.

In the camera module according to another aspect of the present invention having such a configuration, the driving force is generated by the interaction between the magnetic field of the coil 40 and the driving magnet 20 by the power applied to the coil 40 from the substrate part 41 . When generated, the movable part 3 is driven in the optical axis direction with respect to the fixed part 4, and accordingly, the separation distance between the optical unit 2 and the image sensor unit (not shown) under the fixed part 4 is changed. By doing so, Zoom or Auto Focus is implemented.

In the above detailed description of the present invention, only specific embodiments thereof have been described. However, it is to be understood that the present invention is not limited to the particular form recited in the detailed description, but rather, it is to be understood to cover all modifications and equivalents and substitutions falling within the spirit and scope of the present invention as defined by the appended claims. should be

1: carrier 2: optical unit
3: movable part 4: fixed part
5: ball member 10: carrier part
12: opening 13: through hole
14: magnet mounting part 16: recessed part
17: auxiliary magnet mounting part 18: auxiliary concave part
19: hook 20: driving magnet
22: auxiliary magnet 30: damper part
32: elastic body 34: back yoke
36: auxiliary back yoke 38: support
39: binding piece 40: coil
41: substrate part 42: yoke part
50, 52: ball rail

Claims (10)

Carrier part on which the driving magnet is mounted on the outer surface; and
and a damper unit coupled to the carrier unit and having a plurality of elastic and magnetic support members;
A carrier of a camera actuator inserted into the carrier so that a back yoke integrally formed with the support of the damper is opposed to the driving magnet.
The method of claim 1,
A concave portion is formed on the outer surface of the carrier on which the driving magnet is mounted,
A carrier of a camera actuator in which the back yoke configured integrally with the support is inserted into the concave portion.
The method of claim 1,
The carrier part has at least two through-holes around the central opening to which the optical unit is coupled,
A carrier of a camera actuator in which the elastic body of the damper part is coupled to the through hole and protrudes upward and downward of the carrier part.
4. The method of claim 3,
One through hole is formed in each corner region of the carrier part,
A carrier of a camera actuator in which the elastic body is configured to be matched and coupled to each of the through-holes one by one.
The method of claim 1,
The support is seated and fixed on the upper surface of the carrier part around the central opening as a rectangular ring-shaped or annular plate-shaped body,
A carrier of a camera actuator to which the elastic body is integrally attached to a predetermined position of the support through insert molding.
6. The method of claim 5,
At least one binding hook is formed to protrude from the outer surface of the carrier part,
A carrier of the camera actuator in which a binding piece is formed in the support to correspond to each of the binding hooks.
The method of claim 1,
An auxiliary magnet for position sensing is further mounted on the outer surface of the carrier part,
A carrier of a camera actuator inserted into the carrier so that an auxiliary back yoke integrally formed with the elastic support of the damper unit is opposed to the auxiliary magnet.
8. The method of claim 7,
An auxiliary concave portion is formed on the outer surface of the carrier on which the auxiliary magnet is mounted,
A carrier of a camera actuator in which the auxiliary back yoke configured integrally with the support is inserted into the auxiliary concave portion.
The method of claim 1,
The magnet mounting portion of the carrier on which the driving magnet is mounted is formed in an open structure with an open top,
A carrier of a camera actuator in which a part of the supporter covers the open part of the upper end of the magnet mounting part so as to come into contact with a part of the driving magnet.
A movable part having the carrier according to any one of claims 1 to 9 mounted on an optical unit and having a driving magnet mounted on an outer surface thereof;
a fixed part including a coil disposed to face the driving magnet to form a single magnetic circuit together with the driving magnet, and a yoke unit disposed to correspond to the driving magnet for generating attractive force; and
A camera module comprising a; a plurality of ball members interposed between the movable part and the fixed part for driving the movable part in the optical axis direction with respect to the fixed part.

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