KR102199457B1 - Lens assemblng apparatus for camera - Google Patents

Abstract

Disclosed is a lens coupling device for a camera. The lens coupling device for a camera comprises: a base part; a support part; and a pressing means. According to the present invention, the tilting of a lens unit that occurs when the lens unit is coupled to a housing unit such as an OIS actuator is reduced, and thus it is possible to significantly reduce assembly defects and damage to the lens unit.

Description

Lens combination device for camera{LENS ASSEMBLNG APPARATUS FOR CAMERA}

The present invention relates to a coupling device, and more particularly, to a lens coupling device for a camera that couples a lens used in a camera such as a smartphone to a housing.

With the development of communication technology, the use of portable terminals such as mobile phones and PDAs is increasing rapidly in recent years, and these technologies have various functions such as music, movies, TV, and games as well as simple phone functions with the development of electric/electronic technologies. Has been provided. One of the things that plays a big role in providing these various functions is a camera module.

The camera module is being changed from the existing 300,000 pixels (VGA level) to the current high pixels of 10 million or more, and at the same time, it is being changed to enable various additional functions such as auto focusing (AF) and optical zoom.

In addition, due to the development of file transmission systems including wireless Internet, video calls are becoming possible, and dual cameras mounted on one printed circuit board in which two or more camera modules for video calls and video capture are combined by a single connector. camera) is being produced.

In general, in implementing such a dual camera, a high-pixel camera of 13 mega or more is used for photographing a general image, and a low-pixel camera of a VGA level or lower is used for a video call.

In this way, it is difficult to manufacture two or more camera modules because accurate bonding between printed circuit boards is required, and malfunctions inevitably occur when the contact failure of the pad formed on the bonding between the boards occurs. It must be done.

That is, a flexible circuit board (FPCB) with a connector for connecting the camera module to an external device must be accurately bonded to the printed circuit board at the bottom of the camera module.

On the other hand, as the mobile communication terminal becomes smaller, the image quality deteriorates because the influence on hand shake is greater during image capture. Therefore, a correction technique for hand shake is required to obtain a clear image.

When hand shake occurs during image capture, an OIS actuator applied with OIS (Optical Image Stabilization) technology can be used to compensate for hand shake. The OIS actuator can move the lens module in a direction perpendicular to the optical axis.

Conventionally, when the lens module is coupled to the OIS actuator, both are mounted on the tray of the facility and assembled. In this case, there is a disadvantage in that the lens module is unstable in seating and thus the lens module is tilted, resulting in poor assembly or damage to the lens module.

In addition, when the lens module is coupled to the OIS actuator in the related art, productivity is good, but tolerance management is physically impossible, so there are many defects and the camera performance is degraded.

The above-described technical configuration is a background technology for aiding understanding of the present invention, and does not mean a conventional technology widely known in the art to which the present invention belongs.

Korean Registered Patent Publication No. 10-1892857 (Samsung Electric Co., Ltd.) 2018. 08. 22.

Accordingly, an object of the present invention is to provide a lens coupling device for a camera that can significantly reduce assembly failure and damage to the lens unit by reducing the tilt of the lens unit that occurs when the lens unit is coupled to a housing unit such as an OIS actuator.

In addition, to provide a lens coupling device for a camera capable of minimizing distortion during assembly of the lens unit by improving the flatness of a region in which the lens unit and the housing unit are seated.

According to an aspect of the present invention, a base portion on which a housing portion and a lens portion coupled to the housing portion are seated; A support portion detachably coupled to the base portion; And a pressing unit provided on the support unit for pressing and coupling the lens unit to the housing unit and for supporting the housing unit, wherein the pressing unit includes: a lens pressing unit provided at the support unit to press the lens unit to the housing unit; And a housing pressing unit provided on the support unit for pressing the housing in the direction of the base unit, wherein the lens pressing unit includes: a pressing body provided so that one side thereof passes through the support unit; A support pin coupled to the pressure body to support the pressure body to the support portion; A pressing flange provided at an end of the pressing body and pressing the lens unit in the direction of the housing unit; And a pressure spring supported on the flange at one side and a pressure spring supported on the support at the other side, and a first stopper groove and a second stopper groove on which the support pins are supported, and the first stopper groove This depth is provided deeper than the second stopper groove, and when the pressing body is rotated and the support pin is placed in the first stopper groove, the pressing flange presses the lens unit, and the support pin is placed in the second stopper groove. When the pressure of the pressing flange is released, a seating portion protruding upward so that the housing portion and the lens portion are seated is provided on an upper surface of the base portion, and the base portion is provided in the base portion so as to surround the seating portion. Further comprising a guide block for guiding the seating of the housing portion, further comprising an alignment portion provided in the base portion for magnetically adjusting the alignment of the housing seated in the base portion, the alignment portion, the upper surface of the base portion An alignment block provided to be recessed in the portion; And a magnet member provided in the alignment block and an alignment magnet provided in the housing part, and an alignment magnet acting on an attractive force may be provided.

The housing pressing unit may include a plurality of pressing bars supported by the support body so as to be elevating through a hole provided in communication with the support body and the cover body, and a lower end pressing the upper surface of the housing unit; And a plurality of elastic members provided inside the support body to elastically support the plurality of pressing bars.

Embodiments of the present invention are provided in the support portion to pressurize the lens portion to the housing portion, and reduce the tilting of the lens portion that occurs when the lens portion is coupled to the housing portion by a pressing means for supporting the housing portion, thereby reducing assembly failure and damage to the lens portion. It can be greatly reduced.

In addition, by improving the flatness by the seating portion protruding upward so that the housing portion and the lens portion are seated on the upper surface of the base portion, distortion during assembly of the lens portion can be minimized.

1 is a view schematically showing a lens coupling device for a camera according to an embodiment of the present invention.
2 is a front cross-sectional view of FIG. 1.
3 is a side cross-sectional view of FIG. 1.
4 is a cross-sectional view of a region of the pressure bar shown in FIG. 1.
FIG. 5 is a diagram schematically illustrating that a housing part and a lens part are seated in the base part shown in FIG. 1 and the support part is separated from the base part.
6 is an enlarged view illustrating an area of the seating portion shown in FIG. 1.
7 is a view schematically showing the operation of the pressing means shown in FIG.
8 is an operation diagram of a plurality of pressing bars shown in FIG. 1 pressing the upper surface of the housing part.
9 is a state diagram of use of the present embodiment.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the implementation of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same member.

1 is a view schematically showing a lens coupling device for a camera according to an embodiment of the present invention, Figure 2 is a front cross-sectional view of Figure 1, Figure 3 is a side cross-sectional view of Figure 1, Figure 4 is a It is a cross-sectional view cut through the area of the shown pressure bar, and FIG. 5 is a schematic view showing that the housing part and the lens part are seated in the base part shown in FIG. 1 and the support part is separated from the base part.

In addition, Figure 6 is a view showing an enlarged view of the area of the seating portion shown in Figure 1, Figure 7 is a view schematically showing the operation of the pressing means shown in Figure 1, Figure 8 is a plurality of The pressing bar is an operation diagram for pressing the upper surface of the housing part, and FIG. 9 is a state diagram in use of the present embodiment.

As shown in these drawings, the lens coupling device 1 for a camera according to the present embodiment includes a housing portion 10 and a base portion 110 on which a lens portion 20 coupled to the housing portion 10 is mounted. ), and the support part 200 detachably coupled to the base part 110, and the support part 200 provided in the support part 200 to pressurize the lens part 20 to the housing part 10 to couple and support the housing part 10. It includes a pressurizing means 300 and an alignment unit 400 provided on the base unit 110 to adjust the alignment of the housing seated on the base unit 110 by magnetic force.

The base part 110, as shown in FIG. 1, is rotatably coupled to both side walls of the base body 110 and the base body 110, and a hook part 120 for clamping the support part 200, It is provided to protrude from the upper surface of the base body 110 and is coupled to the base body 110 so as to surround the seating portion 130 on which the housing portion 10 and the lens portion 20 are seated, and the seating portion 130 It includes a guide block 140 for guiding the seating of the housing part 10, and a pair of support shafts 150 that are coupled to the upper surface of the base body 110 and inserted into the support part 200.

The base body 110 of the base portion 110 may have a rectangular parallelepiped shape, as shown in FIG. 1.

The hook portion 120 of the base portion 110 is to detachably couple the support portion 200 to the base body 110, and is disposed on both side walls of the base body 110, as shown in FIG. The hook body 121 coupled to the hook coupling groove 211 provided in the support portion 200, and a hook shaft 122 coupled to both side walls of the base body 110 to rotatably support the hook body 121 , One side is supported by a groove provided in the base body 110, and the other side includes a hook spring 123 that supports the hook body 121 to elastically couple the hook body 121 to the hook coupling groove 211. .

The mounting portion 130 of the base portion 110 is provided on the upper surface of the base body 110 so as to be disposed inside the guide block 140, as shown in FIG. 1, and the housing portion 10 and the lens portion ( 20) can be provided as a seating place.

In this embodiment, as shown in FIG. 6, the seating portion 130 is provided to protrude upward on the upper surface of the base body 110 and the first seating body 131 on which the housing portion 10 is seated. And, it includes a second seating body 132 provided to protrude upwardly on the upper surface of the first seating body 131 and on which the lens unit 20 is seated.

In this embodiment, the second seating body 132 may be provided from the first seating body 131 as high as h as shown in FIG. 6.

In this embodiment, by managing the step h of the seating portion 130 to within ±1 μm, it is possible to minimize distortion when the lens unit 20 is assembled.

The guide block 140 of the base portion 110 guides the housing portion 10 to be stably seated on the seating portion 130, and has a rectangular planar shape with an open center portion as shown in FIG. I can.

In this embodiment, as shown in FIG. 2, the guide block 140 may be fitted and coupled to a plurality of fixing pins 141 that have one side portion coupled to the base body 110.

As shown in FIG. 2, the support shaft 150 of the base portion 110 may have a lower portion coupled to the base body 110 and an upper portion fitted to the body groove 212 of the support body 210. have.

As shown in FIG. 2, the support part 200 is detachably coupled to the base body 110 by a hook part 120 to press the housing part 10 and the lens part 20. It can be provided as a supporting place.

In this embodiment, the support part 200 includes a support body 210 in which both sides are coupled to the base body 110 by a hook part 120 and a support shaft 150, and the support body It is coupled to the upper portion of the 210 includes a cover body 220 supporting the pressing means 300.

In the support body 210 of the support part 200, as shown in FIG. 2, a hook coupling groove 211 to which the hook body 121 is coupled is provided on both side walls, and an area adjacent to the hook coupling groove 211 A body groove 212 into which the support shaft 150 is inserted may be provided in the support body 210 of the.

The cover body 220 of the support part 200 may be detachably pinned or screwed to the upper part of the support body 210 to support the pressing means 300 such as the base body 110 so as to be able to move up and down.

In this embodiment, as shown in FIG. 7, a first stopper groove 221 and a second stopper groove 222 may be provided in the cover body 220. In this embodiment, the first stopper groove 221 is provided deeper than the second stopper groove 222 to rotate the pressing body 311, thereby forming the support pin 312 as shown on the left side of FIG. 7. 1 When positioned in the stopper groove 221, the pressing flange 313 presses the lens unit 20, and in this state, the pressing body 311 is rotated, as shown on the right side of FIG. 7, the support pin 312 ) In the second stopper groove 222 may release the pressing of the pressing flange 313.

As described above, in this embodiment, since the lens unit 20 can be seated on the housing unit 10 by rotation of the lens pressing unit 310, damage to the lens unit 20 can be greatly reduced.

The pressing means 300 can press the lens unit 20 to be coupled to the housing unit 10 and press the housing unit 10 so that the housing unit 10 does not shake during this process.

In this embodiment, the pressing means 300 is a lens that presses the lens unit 20 in the direction of the housing unit 10 to couple the lens unit 20 to the housing unit 10, as shown in FIG. It includes a pressing unit 310 and a housing pressing unit 320 provided on the support unit 200 so as to be spaced apart from the lens pressing unit 310 to press the upper surface of the housing unit 10.

The lens pressing unit 310 of the pressing means 300 is coupled to a pressing body 311 provided so that the lower part passes through the support part 200 and a pressing body 311 as shown in FIG. 1. A support pin 312 that supports 311 on the support part 200, a pressure flange 313 provided at an end of the pressure body 311 to press the lens part 20 in the direction of the housing part 10, The lower part is supported by the pressure flange 313 and the upper part includes a pressure spring 314 supported in a groove provided in the support body 210.

The pressing body 311 of the lens pressing unit 310 may have a thin cylindrical shape, as shown in FIG. 1, and a plurality of grooves are spaced apart from the end of the pressing body 311 so that the user can conveniently hold it. have.

The support pins 312 of the lens pressing unit 310 may be provided so that both ends protrude to the outside of the pressing body 311 as shown in FIG. 3 to support the pressing body 311.

As described above, in this embodiment, when the pressing body 311 is rotated, as shown on the left side of FIG. 7, when the support pin 312 is positioned in the first stopper groove 221, the pressing flange 313 is As shown in the right side of FIG. 7 by pressing the part 20 and rotating the pressing body 311 in this state, when the support pin 312 is placed in the second stopper groove 222, the pressing flange 313 The pressurization of can be released (indicated by H, see FIG. 7).

The pressing flange 313 of the lens pressing unit 310 is provided with a diameter larger than that of the pressing body 311 as shown in FIG. 2 to press the upper portion of the lens unit 20 in the direction of the housing unit 10 The lens unit 20 may be coupled to the housing unit 10.

As shown in FIG. 9, the housing pressing unit 320 of the pressing means 300 may be provided on the support unit 200 to press the upper surface of the housing unit 10 to be in close contact with the seating unit 130.

In this embodiment, the housing pressing unit 320 is supported by the support body 210 so as to be elevated through a hole provided to be in communication with the support body 210 and the cover body 220, as shown in FIG. A plurality of pressing bars 321 at the lower end of which pressurize the upper surface of the housing unit 10 (see FIG. 8 ), and a plurality of elastic members provided inside the support body 210 to elastically support the plurality of pressing bars 321 (322).

The alignment part 400, as shown in FIGS. 1 and 3, adjusts the alignment of the housing part 10 provided on the base body 110 and seated on the seating part 130 by magnetic force, that is, the housing part 10 The OIS accommodated in the) may be seated on the base unit 110.

In this embodiment, the alignment unit 400 is provided in the alignment block 410 and the alignment block 410 provided to be recessed in the upper surface of the base body 110, as shown in FIG. It includes a magnet member provided in (10) and an alignment magnet 420 on which the attractive force acts.

As described above, in this embodiment, the lens unit is provided on the support and pressurized to the housing unit, and the tilting of the lens unit, which occurs when the lens unit is coupled to the housing unit, is reduced by a pressing means supporting the housing unit. Damage to wealth can be greatly reduced. In addition, by improving the flatness by the seating portion protruding upward so that the housing portion and the lens portion are seated on the upper surface of the base portion, distortion during assembly of the lens portion can be minimized.

As described above, the present invention is not limited to the described embodiments, and it is obvious to those of ordinary skill in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

1: Lens coupling device for camera
100: base unit 110: base body
120: hook portion 121: hook body
122: hook shaft 123: hook spring
130: seat 131: first seating body
132: second seating body 140: guide block
141: fixing pin 150: support shaft
200: support 210: support body
211: hook coupling groove 212: body groove
220: cover body 221: first stopper groove
222: second stopper groove 300: pressing means
310: lens pressing unit 311: pressing body
312: support pin 313: pressure flange
314: pressure spring 320: housing pressure portion
321: pressure bar 322: elastic member
400: alignment unit 410: alignment block
420: alignment magnet 10: housing part
20: lens unit

Claims (2)

A base portion on which a housing portion and a lens portion coupled to the housing portion are seated;
A support portion detachably coupled to the base portion; And
It includes a pressing means provided on the support portion to pressurize and couple the lens portion to the housing portion and to support the housing portion,
The pressing means includes: a lens pressing unit provided on the support unit and pressing the lens unit to the housing unit; And a housing pressing portion provided on the support portion and pressing the housing in the direction of the base portion,
The lens pressing unit may include a pressing body provided so that one side thereof penetrates the support unit; A support pin coupled to the pressure body to support the pressure body to the support portion; A pressing flange provided at an end of the pressing body and pressing the lens unit in the direction of the housing unit; And a pressure spring supported by one side of the flange and the other side supported by the support,
In the support part, a first stopper groove and a second stopper groove in which the support pin is supported are provided, and the first stopper groove is deeper than the second stopper groove to rotate the pressure body to thereby rotate the support pin. When positioned in the first stopper groove, the pressing flange presses the lens unit, and when the support pin is placed in the second stopper groove, the pressing of the pressing flange is released,
A seating portion protruding upward so as to seat the housing portion and the lens portion is provided on the upper surface portion of the base portion, and the base portion further includes a guide block provided in the base portion to surround the seating portion to guide the seating of the housing portion. Including,
Further comprising an alignment portion provided in the base portion for magnetically adjusting alignment of the housing portion seated in the base portion,
The alignment unit may include an alignment block provided to be recessed in an upper surface of the base unit; And an alignment magnet provided in the alignment block and through which a magnet member provided in the housing part and an attractive force act. The method according to claim 1,
The housing pressing part,
A plurality of pressing bars supported by the support body so as to be elevating through a hole provided in communication with the support body of the support part and the cover body of the support part, and a lower end of which presses the upper surface of the housing part; And
A lens coupling device for a camera including a plurality of elastic members provided inside the support body and elastically supporting the plurality of pressing bars.

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