KR102526064B1 - Camera module using for automobile - Google Patents

Abstract

One embodiment of the camera module, the lens unit; a first substrate on which an electromagnetic circuit is formed; a third substrate disposed spaced apart from the first substrate, including a terminal for electrical connection with the outside, and having an electromagnetic circuit formed thereon; a second substrate disposed between the first substrate and the third substrate, electrically connected to the first substrate and the third substrate, and having an electromagnetic circuit formed thereon; a first support having one side coupled to the first substrate and the other side in contact with one surface of the second substrate to maintain a predetermined distance between the first and second substrates; and a second support having one side coupled to upper portions of the second substrate and the first support and the other side contacting one surface of the third substrate to maintain a predetermined distance between the second substrate and the third substrate. there is.

Description

Camera module for automobile {Camera module using for automobile}

Embodiments relate to a robust camera module capable of preventing displacement, damage, and the like from shock and vibration caused by external forces.

The contents described in this part simply provide background information on the embodiments and do not constitute prior art.

Vehicles may be equipped with camera modules for various purposes. For example, when a vehicle is parked, a camera module capable of securing a rear view may be mounted on the rear portion of the vehicle.

In addition, the camera module can also be used in the case of a car black box, which is very useful for tracking the circumstances and causes of an accident in the case of a recent traffic accident. In addition, cases in which a camera module is used as a recognizing device for clearly and easily grasping a situation in a blind spot that is difficult for a driver or passenger of a vehicle to visually check have been gradually increasing.

Recently, a so-called smart car, that is, a collision warning system that detects and prepares for the possibility of front and rear collisions while driving the car, and a control device mounted on the vehicle prevents collisions between cars running by the control device without depending on the driver's driving. The production of automobiles equipped with a collision avoidance system that can be directly avoided is increasing, and the development of related technologies is increasing.

The use of camera modules as an external situation recognition means for smart cars is increasing, and accordingly, production and technology development of camera modules for automobiles are also increasing.

The camera module for a vehicle is provided with a plurality of printed circuit boards (PCBs), and each printed circuit board may be arranged at regular intervals. Since the camera module including each of the printed circuit boards is mounted on a running vehicle, it experiences a lot of shock and vibration due to external force compared to camera modules used for other purposes.

In particular, a plurality of printed circuit boards are highly likely to be displaced from their original positions due to shock and vibration caused by a continuous external force, and there is also a high risk of damage to connectors electrically connecting each printed circuit board.

Therefore, there is a need for a robust circuit board connection structure capable of preventing a plurality of printed circuit boards and connectors connecting them from being displaced from impact or vibration caused by external force, or from being damaged.

Accordingly, an object of the embodiment is to provide a robust camera module capable of preventing displacement, damage, or the like from shock or vibration caused by an external force.

The technical problem to be achieved by the embodiment is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

One embodiment of the camera module, the lens unit; a first substrate on which an electromagnetic circuit is formed; a third substrate disposed spaced apart from the first substrate, including a terminal for electrical connection with the outside, and having an electromagnetic circuit formed thereon; a second substrate disposed between the first substrate and the third substrate, electrically connected to the first substrate and the third substrate, and having an electromagnetic circuit formed thereon; a first support having one side coupled to the first substrate and the other side in contact with one surface of the second substrate to maintain a predetermined distance between the first and second substrates; and a second support having one side coupled to upper portions of the second substrate and the first support and the other side contacting one surface of the third substrate to maintain a predetermined distance between the second substrate and the third substrate. there is.

In one embodiment of the camera module, a fastener for coupling the third substrate and the second support to each other may be provided.

An embodiment of the camera module may include an electromagnetic shielding unit accommodating the first substrate, the second substrate, and the third substrate and preventing external leakage of the electromagnetic field generated on each substrate.

The electromagnetic shielding part may have a through hole through which the fastener is fastened so that the electromagnetic shielding portion and the third substrate are coupled to each other by the fastener.

One embodiment of the camera module may be provided with a connector electrically connecting the first substrate and the second substrate and the second substrate and the third substrate to each other.

The connector may be provided as a flexible circuit board.

The first support or the second support may include a small diameter portion in which a male thread is formed; and a large-diameter portion at the center of which is formed a coupling groove in which a female screw thread corresponding to the male screw thread is formed so that the small-diameter portion formed with the male screw thread can be screwed.

The large-diameter portion may have a circular cross section in the width direction.

The large-diameter portion may have a one-shaped depression formed in a width direction at an end portion passing through a center of the large-diameter portion.

The large-diameter portion may have a cross-shaped concave portion formed in a width direction passing through a center of the large-diameter portion at an end portion of the large-diameter portion.

The large-diameter portion may have a hexagonal cross section in the width direction.

The first substrate, the second substrate, and the third substrate may have insertion portions into which the small diameter portions are inserted at corresponding portions of the first substrate, the second substrate, and the third substrate.

The insertion part may be formed of a through hole or a recessed hole in which at least a portion thereof is opened.

A female screw thread corresponding to the male screw thread may be formed in the insertion portion so that a small diameter portion having a male screw thread may be screwed.

The small diameter part of the first support is screwed into the insertion part of the first substrate, the small diameter part of the second support is screwed into the large diameter part of the first support, and the second substrate is screwed into the large diameter part of the first support. And it may be disposed between the large-diameter portion of the second support.

The first support or the second support may be electrically connected to a wire for grounding.

Another embodiment of the camera module, the lens unit; a first substrate on which an electromagnetic circuit is formed; a second substrate disposed spaced apart from the first substrate, including a terminal for electrical connection with the outside, and having an electromagnetic circuit formed thereon; a first support having one side coupled to the first substrate and the other side in contact with one surface of the second substrate to maintain a predetermined distance between the first and second substrates; and an electromagnetic shielding unit accommodating the first substrate and the second substrate and preventing external leakage of electromagnetic fields generated in each of the substrates.

Another embodiment of the camera module, the lens unit; a control circuit board for controlling the lens unit; a power supply circuit board disposed above the control circuit board and electrically connected to the control circuit board to supply power to the control circuit board; A support having one side coupled to the control circuit board and the other side contacting the lower surface of the power supply circuit board to maintain a certain distance between the control circuit board and the power supply circuit board; And it may include a fastener for coupling the power supply circuit board and the support to each other.

According to the embodiment, each substrate is firmly fastened to each other at regular intervals by the support and the fastener, so that the fastening force between the substrates is improved.

In addition, since each board has a solid coupling structure, even if shock or vibration due to an external force continuously occurs, each board does not depart from its fixed position and maintains a constant distance from each other, preventing damage to the board and malfunction of the camera module. There are possible effects.

In addition, since each support can be manufactured to have various lengths, there is an effect of easily adjusting the distance between each substrate.

In addition, since the distance between each board can be easily adjusted, assembly tolerance is given to the connector that electrically connects each board so that the connector is not tightly coupled to each board to prepare for shock or vibration, thereby preventing damage to the connector. , it has the effect of preventing disconnection.

1 is a perspective view illustrating a camera module according to an exemplary embodiment.
2 is an exploded perspective view illustrating a camera module according to an exemplary embodiment.
3 is a side view illustrating a camera module according to an exemplary embodiment.
Figure 4a is a perspective view showing a part of the internal structure of the camera module according to an embodiment.
Figure 4b is a side view showing a part of the internal structure of the camera module according to an embodiment.
5 is a perspective view showing a first support or a second support according to an embodiment.
6 is a perspective view showing a first support or a second support according to another embodiment.
7 is a perspective view showing a first support or a second support according to another embodiment.
8 is a view for explaining a coupling structure of each substrate and a support of a camera module according to an embodiment.
9 is a view for explaining a coupling structure of each substrate and a support of a camera module according to another embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Embodiments can apply various changes and can have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the embodiments to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the embodiments. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description.

Terms such as "first" and "second" may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the configuration and operation of the embodiment are only for describing the embodiment, and do not limit the scope of the embodiment.

In the description of the embodiment, in the case where it is described as being formed on "upper (above)" or "lower (on or under)" of each element, on or under (on or under) ) includes both elements formed by directly contacting each other or by indirectly placing one or more other elements between the two elements. In addition, when expressed as “up (up)” or “down (down) (on or under)”, it may include the meaning of not only the upward direction but also the downward direction based on one element.

In addition, relational terms such as "upper/upper/upper" and "lower/lower/lower" used below do not necessarily require or imply any physical or logical relationship or order between such entities or elements, It may be used only to distinguish one entity or element from another entity or element.

In addition, an orthogonal coordinate system (x, y, z) can be used in the drawing. In the drawing, the x-axis and the y-axis mean planes perpendicular to the optical axis, and for convenience, the optical axis direction (z-axis direction) can be referred to as a first direction, an x-axis direction as a second direction, and a y-axis direction as a third direction. .

1 is a perspective view illustrating a camera module according to an exemplary embodiment. 2 is an exploded perspective view illustrating a camera module according to an exemplary embodiment. 3 is a side view illustrating a camera module according to an exemplary embodiment.

The camera module may include a lens unit 10, a front cover 20, a coupler 30, a first sealing member 40, a first sealing member 40, and a bracket 50.

The lens unit 10 serves to photograph an external subject, and although not shown, includes a lens barrel, a lens driving device for driving the lens barrel in a first direction for focusing, and a lens barrel in a direction perpendicular to the first direction. A shake correction device or the like for controlling the movement of may be provided. At this time, the lens barrel may be composed of a single lens, but may also be provided in a form in which a plurality of lenses are aligned in the first direction.

In addition, since the lens unit 10 is coupled to the front cover 20 by a method such as form fitting or interference fit, moisture, dust, etc. A sealing device may be provided to block the inflow of foreign substances into the camera module.

The lens unit 10 is mounted on the front part of the front cover 20 . To this end, a hollow portion in which the lens unit 10 is mounted may be formed in the front portion of the front cover 20 . The front cover 20 may be combined with the bracket 50 at the rear. The coupling between the front cover 20 and the bracket 50 may be performed by, for example, a coupler 30 as shown in FIG. 2 .

The coupler 30 may serve to couple the front cover 20 and the bracket 50. For fastening of the coupler 30, for example, as shown in FIG. 3, a hole is formed in the bracket 50 and a groove is formed in a portion corresponding to the hole of the bracket 50 in the front cover 20. can do.

In the embodiment, since a hole is formed in the bracket 50, a first escape groove 51 for the coupler 30 is formed so that the coupler 30 can be easily fastened to the front cover 20 and the bracket 50. can However, when the coupling structure of the bracket 50 and the front cover 20 is different using the coupler 30 or the bracket 50 and the front cover 20 are combined without using the coupler 30, One escape groove 51 may not be formed.

For example, when the coupler 30 is fastened in the opposite direction to the above embodiment, that is, by forming a hole in the front cover 20 and forming a groove in the bracket 50, the coupler 30 When the coupler 30 is fastened from the hole of the front cover 20 toward the groove of the bracket 50 during fastening, it is not necessary to form the first escape groove 51.

In another embodiment, when the front cover 20 and the bracket 50 are coupled by a shape-fitting or interference fit method without using the coupler 30, the coupler 30 is not required, so even at this time, 1 There will be no need to form the escape groove 51.

The first sealing member 40 is disposed at the joint between the front cover 20 and the bracket 50, and moisture, dust, and other foreign substances enter the camera module through a gap between the front cover 20 and the bracket 50. It can play a role in blocking the inflow of

For example, as shown in FIG. 2, the first sealing member 40 has an appropriate size and shape so that it can be placed in a region that can effectively block the gap between the front cover 20 and the bracket 50. Gaskets, O-rings, and other suitable types may be used.

The bracket 50 is combined with the front cover 20, accommodates most of the components of the camera module, and seals these components to the outside, preventing damage and malfunction of the components of the camera module received by external impact. and block the inflow of moisture, dust and other foreign substances from the outside into the camera module.

As described above, the bracket 50 may have a first escape groove 51 for the coupler 30 so that the coupler 30 can be easily fastened to the front cover 20 and the bracket 50. . However, as described above, the coupling structure between the front cover 20 and the bracket 50 is different, or the front cover 20 and the bracket 50 are formed in a form-fitting or press-fitting method without using the coupler 30. ) is combined, the first escape groove 51 may not be formed.

A protrusion 52 may be formed at the rear of the bracket 50, which is formed to seal a portion where an external cable and an external cable electrically connected to the camera module are mounted. Inside the protrusion 52, a terminal 70, a cable (not shown) having one end electrically connected to the terminal 70, a cable penetration part 80, a bushing 90, and a second sealing member 91 are accommodated. can Hereinafter, the components will be described in detail.

The camera module may include a connector 60 , a terminal 70 , a cable penetration part 80 , a bushing 90 , and a second sealing member 91 .

The connector 60 electrically connects the first substrate 200-1 and the second substrate 200-2 and the second substrate 200-2 and the third substrate 200-3 to be described later. can play a role A specific structure of the connector 60 will be described below.

The terminal 70 is disposed to be coupled to the third substrate 200-3 to be described later and may serve to electrically connect the outside of the camera module. The third board 200-3 provided inside the camera module receives power from the cable connected to the terminal 70, and the second board 200-3 is electrically connected by the connector 60. It is supplied to the substrate 200-2 and the first substrate 200-1.

In addition, the first substrate 200-1 is electrically connected to the lens unit 10 and the above-described lens driving device included in the lens unit 10 by power supplied through the first substrate 200-1; Vibration compensator, etc. may work.

The cable penetration part 80 is formed as a hollow member to accommodate a part of the terminal 70 in the hollow part, and a cable coupled to the terminal 70 can be disposed through the hollow part.

Meanwhile, it is appropriate to firmly couple the terminal 70 and the cable to prevent disconnection by soldering, a bonding method using an electrically conductive adhesive, or the like.

The bushing 90 is combined with the cable penetration part 80 in such a way that one side is fitted to the inner circumferential surface of the cable penetration part 80 or, conversely, one side of the cable penetration part 80 is fitted to the inner circumferential surface of the bushing 90. and may serve to extend the cable penetration part 80.

Therefore, the bushing 90 is formed with a hollow portion communicating with the cable penetration portion 80, and the cable can be disposed through the hollow portion. On the other hand, when the cable penetration part 80 is formed long enough, the bushing 90 may not be separately provided. Whether to provide a separate bushing 90 or use only the cable penetration part 80 can be appropriately selected in consideration of the size, shape, and arrangement structure of parts of the camera module.

The second sealing member 91 is disposed in the gap between the bushing 90 or the end of the cable penetration part 80 and the protruding part 52 of the bracket 50, and through the gap moisture, dust and other foreign substances inside the camera module It can play a role in blocking the inflow of

Therefore, the second sealing member 91 is provided in a generally cylindrical shape, the inner circumferential surface is fitted so as to be in close contact with the outer circumferential surface of the bushing 90 or the cable through portion 80, and the outer circumferential surface of the hollow formed in the protruding portion 52. It may be fitted so as to closely adhere to the inner circumferential surface.

Figure 4a is a perspective view showing a part of the internal structure of the camera module according to an embodiment. Figure 4b is a side view showing a part of the internal structure of the camera module according to an embodiment.

5 is a perspective view showing the first support 100-1 or the second support 100-2 according to an embodiment. 6 is a perspective view showing a first support 100-1 or a second support 100-2 according to another embodiment. 7 is a perspective view showing a first support 100-1 or a second support 100-2 according to another embodiment.

8 is a view for explaining a coupling structure of each substrate and a support of a camera module according to an embodiment. 9 is a view for explaining a coupling structure of each substrate and a support of a camera module according to another embodiment.

As shown in FIGS. 4A and 4B, the inside of the camera module includes a first substrate 200-1, a second substrate 200-2, a third substrate 200-3, and a first support 100-1. ), the second support 100-2, and the connector 60 may be provided.

The first substrate 200-1 may be disposed adjacent to the lens unit 10, an electromagnetic circuit including an image sensing unit (not shown) may be formed, and light may be transmitted through the lens unit 10. An image of a subject may be captured by the image sensing unit, and the sensed image may be converted into an electrical signal and transmitted to an external image storage device and/or image reproducing device. However, converting the sensed image into an electrical signal may also be performed on the second substrate 200-2.

Meanwhile, an electromagnetic circuit for controlling the lens unit 10 may be formed on the first substrate 200 - 1 . That is, the first substrate 200-1 receives power from an external power source through the cable, the third substrate 200-3, and the second substrate 200-2, and the lens driving device of the lens unit 10, You can control the image stabilization device.

The third substrate 200-3 is spaced apart from the first substrate 200-1 at a regular interval, includes a terminal 70 for electrical connection with the outside, and may form an electromagnetic circuit. The second substrate 200-2 is disposed between the first substrate 200-1 and the third substrate 200-3, and the first substrate 200-1 and the third substrate 200-3 It is electrically connected to and an electromagnetic circuit may be formed.

The second substrate 200-2 and the third substrate 200-3 supply necessary power to the first substrate 200-1 and transmit the sensed image transmitted from the first substrate 200-1. It may play a role of transferring an electrical signal to an external image storage device and/or image reproducing device.

For example, the second substrate 200-2 converts the sensed image transmitted from the first substrate 200-1 into an electrical signal and transmits it to an external image storage device and/or image reproducing device, or the third substrate It may serve to rectify power input from 200-3 and transmit it to the first substrate 200-1. That is, the second substrate 200-2 is disposed in the middle of the first substrate 200-1 and the third substrate 200-3, so that the first substrate 200-1 and the third substrate 200-3 This role can be divided into parts.

The third substrate 200-3 mainly supplies power necessary for the operation of the lens unit 10, and transmits the sensed images transmitted from the first and second substrates 200-1 and 200-2. It may play a role of transferring an electrical signal to an external image storage device and/or image reproducing device.

Accordingly, elements such as a condenser, a rectifier, a transformer, and the like may be mounted on the third substrate 200 - 3 to supply power having an appropriate voltage and current required for the operation of the lens unit 10 . In addition, a terminal 70 to which an end of a cable is coupled may be mounted on the third substrate 200-3 for electrical connection to an external image storage device, image reproducing device, camera module control device, etc., as described above. .

As described above, the first substrate 200-1, the second substrate 200-2, and the third substrate 200-3 are equipped with elements occupying a certain volume, such as capacitors, rectifiers, transformers, and terminals 70. Alternatively, since it can be coupled, a device is required to form a constant gap between the respective substrates and maintain a constant distance between the substrates even when shock or vibration is applied to the camera module by an external force.

Such an apparatus may be implemented by supports exemplified by the first support 100-1 and the second support 100-2 in the following embodiments. The specific structure of the support will be described below.

Meanwhile, as shown in FIGS. 8 and 9, each of the first substrate 200-1, the second substrate 200-2, and the third substrate 200-3 has a second escape groove at its corner. (220) may be formed. This is because each substrate needs to have a shape corresponding to the first escape groove 51 formed in the bracket 50 in order to be easily accommodated in the bracket 50 .

Therefore, as described above, when the formation of the first escape groove 51 is not necessary, that is, the bracket 50 using the coupler 30 and the couple of couplers 30 of the front cover 20 are different, When the bracket 50 and the front cover 20 are coupled without using the coupler 30, the first escape groove 51 may not be formed. In this case, the second escape groove 220 may not be formed. can

On the other hand, each substrate may be formed of a printed circuit board (PCB), and may be manufactured in a form in which necessary elements are mounted on each printed circuit board. In addition, it is appropriate for each substrate to be formed of a solid material in order to maintain a constant distance from each other even when shock or vibration is applied to the camera module by an external force.

The connector 60 may serve to electrically connect each board to each other. For example, as shown in FIG. 4A, a connector 60 electrically connecting the first substrate 200-1 and the second substrate 200-2, and the second substrate 200-2 and the second substrate 200-2. A connector 60 electrically connecting the three substrates 200-3 to each other may be provided in the camera module.

In the embodiment, one connector 60 connecting each board to each other is provided on the side of each board, but is not limited thereto, and the number of connectors 60 is considered considering the circuit structure of each board and the overall structure of the camera module. , you can choose the placement location.

It is appropriate for the connector 60 to be formed of a flexible material capable of absorbing shock and vibration so that it is easy to bond with each substrate and not damaged by shock and vibration applied from the outside of the camera module. As such, the connector 60 may be formed of a flexible circuit board.

However, it is not limited thereto, and a strong material may be used as long as it is resistant to shock and vibration, or the connector 60 may be formed using a bundle of wires. In addition, soldering, an adhesive method using an electrically conductive adhesive, a shape fitting method, an interference fit method, or the like may be used for coupling the connector 60 and each board. This connector 60 may serve as a B2B (board to board) connector 60 that electrically connects each board.

The first support 100-1 has one side coupled to the first substrate 200-1 and the other side in contact with one surface of the second substrate 200-2, thereby forming the first substrate 200-1 and the first support 100-1. It may serve to keep the second substrate 200-2 at a certain interval.

The second support 100-2 has one side coupled to the second substrate 200-2 and the first support 100-1 and the other side in contact with one surface of the third substrate 200-3 to It may serve to maintain a certain distance between the second substrate 200-2 and the third substrate 200-3.

The first support 100-1 and the second support 100-2 are the first substrate 200-1, the second substrate 200-2, the second substrate 200-2 and the third substrate 200 -3) The specific shape may be the same except for the fact that the interval between the two is kept constant, and therefore the arrangement position is different. Therefore, the specific structure of the first support 100-1 and the second support 100-2 having the same shape will be described in detail using FIGS. 7 to 9 below.

The support collectively referred to as the first support 100-1 and the second support 100-2 may include a small diameter portion 110 and a large diameter portion 120. The small-diameter portion 110 is a portion whose length in the width direction is smaller than that of the large-diameter portion 120, and a male thread may be formed on its outer circumferential surface.

The large-diameter portion 120 may have a coupling groove 121 in which a female thread corresponding to the male thread is formed so that the small-diameter portion 110 having the male thread can be screwed into the center. Therefore, the small diameter part 110 of another support can be coupled to the coupling groove 121 of the large diameter part 120 .

In this case, as shown in FIG. 5 in one embodiment, the large-diameter portion 120 may have a hexagonal cross section in the width direction. This is to allow the small-diameter portion 110 of the support to be fastened to the insertion portion 210 of each substrate or the coupling groove 121 of another support using a tool such as a wrench.

In addition, as shown in FIG. 6 in another embodiment, the large-diameter portion 120 may have a circular cross section in the width direction, and an end portion of the large-diameter portion 120 passes through the center of the large-diameter portion 120. A cross-shaped depression 122-1 may be formed in the width direction. This is to allow the small diameter portion 110 of the support to be fastened to the insertion portion 210 of each substrate or the coupling groove 121 of another support using a tool such as a cross-shaped screwdriver.

In addition, as another embodiment, as shown in FIG. 7 , the large-diameter portion 120 may have a circular cross-section in the width direction, and the large-diameter portion 120 has a center at an end of the large-diameter portion 120. A one-shaped depression 122-2 passing therethrough may be formed in the width direction. This is to allow the small-diameter portion 110 of the support to be fastened to the insertion portion 210 of each substrate or the coupling groove 121 of another support using a tool such as a flat-head screwdriver.

Although several embodiments of the large diameter portion 120 or the recessed portion have been described above, the present invention is not limited thereto, and various shapes of the large diameter portion 120 or the recessed portion may be formed depending on the type of tool for fastening the support.

Meanwhile, as shown in FIGS. 8 and 9 , in the first substrate 200-1, the second substrate 200-2, and the third substrate 200-3, the first substrate 200-1 is located at corresponding portions. An insertion portion 210 into which the small diameter portion 110 of the support 100-1 or the second support 100-2 is inserted may be formed. As shown in FIGS. 9 and 9 as an embodiment of the insertion part 210, the insertion part 210 may be formed as a through hole.

As another embodiment of the insertion part 210, it may be formed as a recessed hole in which at least a part is opened. The recessed hole is formed at the edge of each board to form a through hole in the vertical direction of each board, and means an insertion part 210 in the form of a part of the hole meeting the end of the board in the lateral direction to be opened. .

8 is a view for explaining a coupling structure of each substrate and a support of a camera module according to an embodiment. As shown in FIG. 8, the first substrate 200-1, the second substrate 200-2, and the third substrate 200-3 are spaced apart from each other, and the first substrate 200-1 and The first support 100-1 is disposed between the second substrate 200-2, and the second support 100-2 is disposed between the second substrate 200-2 and the third substrate 200-3. can be placed.

Meanwhile, in the embodiment, a fastener 400 coupling the third substrate 200-3 and the second support 100-2 to each other may be provided. The fastener 400 penetrates the insertion portion 210 formed in the third substrate 200-3, and one end thereof is inserted into a defect groove formed in the large-diameter portion 120 of the second support 100-2. can be concluded. The fastener 400 may be used in various forms such as screws, coupling pins, and the like.

Due to this structure, the small-diameter portion 110 of the first support 100-1 is screwed into the insertion portion 210 of the first substrate 200-1, and the second support 100-2 The small diameter part 110 is screwed to the large diameter part 120 of the first support 100-1, and the second substrate 200-2 is connected to the large diameter part 120 of the first support 100-1. ) and the large-diameter portion 120 of the second support 100-2, and the first support 100-1, the second support 100-2, and the fastener 400 are fastened to each substrate. And completes the coupling structure between each support and fastener 400.

The first substrate 200-1, the second substrate 200-2, and the third substrate 200-3 include a first support 100-1, a second support 100-2 and fasteners 400. ) are arranged at regular intervals from each other, and since this coupling structure is robust, each substrate may not leave its fixed position against shock and vibration caused by external force.

Meanwhile, the first support 100-1 or the second support 100-2 may be electrically connected to a wire for grounding. At this time, the wire for grounding may be provided with one of a plurality of cables coupled to the terminal 70 . By connecting the wire for grounding to the first support 100-1 or the second support 100-2, damage to each board and occurrence of a short circuit from sudden surging voltage that may occur in each board is prevented. can do.

9 is a view for explaining a coupling structure of each substrate and a support of a camera module according to another embodiment. In another embodiment, as shown in FIG. 9 , an electromagnetic shielding unit 300 is added to the embodiment shown in FIG. 8 .

The electromagnetic shielding unit 300 accommodates the first substrate 200-1, the second substrate 200-2, and the third substrate 200-3 and prevents external leakage of the electromagnetic field generated on each substrate. can play a role The electromagnetic shielding unit 300 may be coupled to the third substrate 200-3 by the fastener 400 and disposed inside the camera module.

To this end, in the electromagnetic shielding part 300, the fastener 400 is fastened so that the electromagnetic shielding part 300 and the third substrate 200-3 are coupled to each other by the fastener 400. A through hole 310 may be formed. Therefore, the fastener 400 passes through the through hole 310 and the insertion portion 210 formed on the third substrate 200-3 so that one end thereof is the large-diameter portion of the second support 100-2. It can be fastened to the coupling groove 121 formed in (120).

A third escape groove 320 may be formed in the electromagnetic shielding unit 300, which is a first escape groove 51 formed in the bracket 50 so that each substrate can be easily accommodated in the bracket 50. ), because it is necessary to have a shape corresponding to the second escape groove 220 formed to correspond thereto.

Therefore, as described above, when the formation of the first escape groove 51 is not necessary, that is, the coupling structure between the bracket 50 and the front cover 20 using the coupling 30 is different, or the coupling 30 Since the first escape groove 51 may not be formed when the bracket 50 and the front cover 20 are coupled without using ), in this case, the third escape groove 320 may not be formed.

Meanwhile, as another embodiment of the camera module, a coupling structure similar to the above structure may be formed even in the case of having two substrates.

For example, when a control circuit board for controlling the lens unit 10 and a power supply circuit board for supplying power to the lens unit 10 and the control circuit board are embedded in the camera module, the first embodiment Excluding the second board (200-2) and the first support (100-1), the first board (200-1), the third board (200-3), the second support (100-2), and fasteners (400) ) can be used to form a coupling structure similar to that assembled.

That is, it is possible to form a structure in which two boards are firmly coupled at regular intervals by the control circuit board, the power supply circuit board, the support, and the fastener 400 . At this time, unlike the above embodiment, only one connector 60 may be provided. In addition, it is natural that the electromagnetic shielding unit 300 may also be arranged similarly to the above embodiment.

In addition, even when four or more substrates are arranged at regular intervals, it is natural to form a constant and robust coupling structure between the substrates in a structure similar to that of the above embodiment.

According to the embodiment, each board is firmly fastened to each other at regular intervals by the support and fastener 400, so that the fastening force between the boards is improved.

In addition, since each board has a solid coupling structure, even if shock or vibration due to an external force continuously occurs, each board does not depart from its fixed position and maintains a constant distance from each other, preventing damage to the board and malfunction of the camera module. There are possible effects.

In addition, since each support can be manufactured to have various lengths, there is an effect of easily adjusting the distance between each substrate.

In addition, since the distance between each board can be easily adjusted, an assembly tolerance is given to the connector 60 electrically connecting each board to prevent the connector 60 from being tightly coupled to each board to prepare for shock or vibration. There is an effect that can prevent damage and disconnection of the connector 60 by enabling.

Although only a few have been described as described above in relation to the embodiments, various other forms of implementation are possible. The technical contents of the above-described embodiments may be combined in various forms unless they are incompatible with each other, and through this, may be implemented in a new embodiment.

100-1: 1st support
100-2: 2nd support
110: small diameter
120: large neck
121: coupling groove
122-1: cross recess
122-2: straight depression
200-1: first board
200-2: Second board
200-3: 3rd board
210: insertion part
220: second escape home
300: electromagnetic shielding unit
310: through hole
320: 3rd escape home
400: fastener

Claims (15)

lens unit;
a first substrate;
a second substrate spaced apart from the first substrate;
a plurality of first supports maintaining a constant distance between the first substrate and the second substrate while supporting the first substrate; and
An electromagnetic shielding unit accommodating the first substrate and the second substrate and preventing external leakage of the electromagnetic field generated on each substrate; and
A first part in contact with one surface of the electromagnetic shielding part and a second part inserted into each of the first supports include a fastener for coupling the electromagnetic shielding part and the first substrate,
The electromagnetic shielding unit,
A through hole through which the fastener is fastened so that the electromagnetic shielding part and the first substrate are coupled to each other by the fastener;
Each of the first supports includes a large-diameter portion in which a coupling groove having a female thread at the center is formed in contact with one surface of the first substrate, and a small-diameter portion in which a male thread is formed in the center and is in contact with one surface of the second substrate, ,
A second part of the fastener is inserted into the coupling groove of each of the first supports. delete delete delete The camera module of claim 1 , wherein the large-diameter portion has a circular cross section in a width direction. The camera module of claim 1 , wherein a one-shaped depression passing through the center of the large diameter portion is formed at an end portion of the large diameter portion in a width direction. The camera module of claim 1 , wherein a cross-shaped depression passing through a center of the large-diameter portion is formed at an end portion of the large-diameter portion in a width direction. The camera module of claim 1 , wherein the large-diameter portion has a hexagonal cross section in a width direction. The camera module of claim 1 , wherein the second substrate includes a plurality of insertion portions into which the small-diameter portions of each of the first supports are inserted. 10. The camera module of claim 9, wherein each insertion part is formed as a recessed hole in which at least a part is opened. 10. The camera module of claim 9, wherein each of the insertion parts has a female thread so as to be screwable with each of the small diameter parts. The camera module of claim 1 , wherein each of the first supports is electrically connected to a wire for grounding. The camera module of claim 1 , further comprising a connector electrically connecting the first substrate and the second substrate to each other. 14. The camera module of claim 13, wherein the connector is formed of a flexible circuit board. According to claim 1,
a third substrate spaced apart from the second substrate; and
The camera module further includes a second support supporting the second substrate and maintaining a constant distance between the second substrate and the third substrate.

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