KR101596780B1

KR101596780B1 - Pan tilt camera

Info

Publication number: KR101596780B1
Application number: KR1020150135294A
Authority: KR
Inventors: 채희성
Original assignee: 채희성
Priority date: 2015-09-24
Filing date: 2015-09-24
Publication date: 2016-02-24

Abstract

The present invention provides a pan tilt camera has excellent utilization since two or more different types of camera modules can be simultaneously mounted, and distribution of weight can be evenly controlled by a weight even if the camera modules having the different weights are applied to be capable of securing a more stable pan rotation motion and/or a more stable tilt rotation motion and providing a stable image and controlling a distance between a driving pulley and a driven pulley of a pan unit and a tilt unit with a variable means in order to control and maintain tension of a belt at a required level.

Description

PAN TILT CAMERA [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pan tilt camera for acquiring images by being applied to a stationary structure, an unmanned or manned moving object, and the like.

Currently, a camera including a pan tilt system is mainly installed in a fixed structure or mounted on an unmanned / unmanned moving object, and can be used for a variety of purposes such as general image shooting, surveillance, inspection, vision assurance, . For example, a pan / tilt camera may be installed indoors or outside a building, or mounted on a vehicle such as a robot or a vessel or a vehicle or a quad-rotor or an aircraft.

Korean Registered Utility Model No. 20-0449880 (issued on Aug. 17, 2010), and Korean Registered Patent No. 10-1449095 (issued on October 14, 2014) disclose a pan tilt system and a camera including the same.

As can be seen from these publications, there is a problem that the range of application is very limited since the conventional pan tilt camera has a configuration using only a single camera module. In addition, there is a problem in meeting the demands of users who are continuously increasing, such as a clear image without shaking, lightening, and the like.

It is an object of the present invention to provide a pan tilt camera which is advantageous in terms of utilization, increase in stability of operation, stable image providing, and light weight.

The problems to be solved are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a fixing apparatus comprising: A pan unit that is rotated in the left-right direction with respect to the fixed unit; A tilt unit rotated in the vertical direction with respect to the fan unit; And a plurality of camera modules supported by the tilt unit, wherein the fixed unit includes a fixed shaft protruding downward, and the fan unit is rotatable about a fixed axis of the fixed unit A member; A first drive pulley rotatable about an axis parallel to the fixed shaft; A first driven pulley fixed on the fixed shaft; A first belt wound around the first drive pulley and the first driven pulley; A fan motor for rotating the first drive pulley; And a first variable means for mounting the rotary member on the first driving pulley so that the distance between the first driving pulley and the first driven pulley is adjustable, wherein the first variable means is provided on the rotary member, A first fixing part having a plurality of first slots elongated in a direction in which the drive pulley is spaced apart from and approach the first driven pulley; A first moving member having a first screw hole corresponding to the first slots of the first fixing part and equipped with the first driving pulley; And a first male screw member respectively coupled to the first screw holes through the first slots to fasten the first shifting member to the first fixing portion, wherein the tilt unit is provided on the rotating member of the fan unit A pair of tilt frames arranged in a vertical direction and opposed to each other; A camera frame rotatably mounted between the pair of tilt frames and supporting the plurality of camera modules; A second drive pulley disposed outside one of the pair of tilt frames and rotatable about an axis parallel to the rotation axis of the camera frame; A second driven pulley paired with the second drive pulley and fixed on a rotation axis of the camera frame; A second belt wound around the second drive pulley and the second driven pulley; A tilt motor for rotating the second drive pulley; And a second variable means for mounting the second drive pulley to any one of the pair of tilt frames so that the distance between the second drive pulley and the second driven pulley can be adjusted, A frame body having a plurality of support regions for supporting the modules, respectively; And at least one weight for adding a weight for uniformizing the distribution of the weight applied to the frame body by the camera module mounted on each of the support areas, A second fixing part provided at any one of the pair of tilt frames and having a plurality of second screw holes; And a second slot having a second slot corresponding to the second screw holes of the second fixing part, the second slot being elongated in a direction in which the second driving pulley is spaced apart from and approach the second driven pulley A second moving member; And a second male screw member respectively coupled to the second screw holes through the second slots to fasten the second moving member to the second fixing portion.

The pair of tilt frames may be provided with at least one or more openings for weight reduction.

The tilt unit may further include a pair of inner cases interposed between the pair of tilt frames and the camera frame. The tilt frame has a plurality of engaging grooves at a portion thereof facing the inner case, and the inner case may be provided with engaging protrusions for engaging with the engaging grooves.

The frame body of the camera frame includes a pair of side frames that are opposed to each other with an interval and are rotatably mounted on the pair of tilt frames; At least one partition frame dividing the pair of side frames into the plurality of support areas; And a mounting frame connected to both ends of the pair of side frames, the mounting frame being detachable.

At least one opening for weight reduction may be provided in the pair of side frames.

Means for solving the problems will be more specifically and clarified through the embodiments, drawings, and the like described below. In addition, various solution means other than the above-mentioned solution means may be further proposed.

According to the embodiment of the present invention, two or more different camera modules can be mounted simultaneously according to the demand of the user, which is advantageous in utilization.

Further, even when a camera module having different weights is applied, the distribution of the weight can be uniformly adjusted by the weight, so that the fan rotation and / or tilt rotation operation is performed with more stability, thereby providing a stable image free from blur There is an advantage to be able to do.

Further, since the separation distance between the drive pulley and the driven pulley of the fan unit and the tilt unit can be adjusted by the variable means, there is an advantage that the tension of the belt wound around the drive pulley and the driven pulley can be freely adjusted and maintained to a required level have.

In addition, since the tilt frame and the side frame have a predetermined opening ratio, and the tilt frame and the inner case are coupled by the engagement groove and the engagement protrusion without a relatively heavy bolt, there is an advantage that weight can be reduced overall.

FIG. 1 is a perspective view illustrating a panning tilting camera according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view illustrating a part of a panning tilting camera according to an embodiment of the present invention.
FIG. 3 and FIG. 4 are perspective views illustrating the internal structure of a pan / tilt camera according to an embodiment of the present invention,
5 is a perspective view showing the fixed unit shown in Fig.
Fig. 6 is an exploded perspective view showing the first variable means shown in Figs. 3 and 4. Fig.
7 is a perspective view showing the camera frame shown in Figs. 3 and 4. Fig.
Fig. 8 is an exploded perspective view showing the second variable means shown in Figs. 3 and 4. Fig.
9 is an exploded perspective view showing a coupling structure between the tilt frame and the side frame shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

For a better understanding of the present invention, the size of elements, the thickness of lines, and the like may be exaggerated for clarity. Further, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions of the present invention, and thus may be changed depending on the intention of the user, the operator, and the like. Accordingly, the terminology used should be interpreted based on the contents of the entire specification of this specification.

The pan tilt camera according to the embodiment of the present invention may be applied to a fixed structure such as a room or a building exterior, a robot or an unmanned or man-made moving object such as a ship or a vehicle or a quad-rotor or an aircraft Installation, mounting).

1 to 9 show a pan / tilt camera according to an embodiment of the present invention. As shown in the figure, the pan tilt camera according to the embodiment of the present invention includes a fixed unit 10 fixed to an object to be applied, a fan unit 10 rotated about an axis in the Z axis direction with respect to the fixed unit 10 a tilt unit 30 which is rotated about an axis in the X axis direction with respect to the fan unit 20 and a plurality of camera modules , 40A, and 40B. The plurality of camera modules 40A and 40B are rotated together in the left and right direction by the fan unit 20 and rotated together in the vertical direction by the tilt unit 30. [

Here, two camera modules 40A and 40B may be provided, one may be a general camera (optical camera), and the other one may be an infrared camera. Of course, the type of the camera module to be applied is not limited thereto, and two or more of them may be variously combined.

The fixed unit 10 includes a disk-shaped fixing member 11 firmly coupled to an object to be applied with a bolt or the like and a fixed shaft 12 protruding downward from a central portion of the fixing member 11. The fixed shaft 12 includes a flange 122 provided at one end of the shaft member 121 and the shaft member 121. [ The flange 122 is coupled to the center of the lower portion of the fixing member 11 so that the shaft member 121 protrudes downward from the fixing member 11. [ The flange 122 is provided with a single or a plurality of openings (through holes), and the flange 122 has a predetermined aperture ratio for weight reduction.

The fan unit 20 includes a fan drive mechanism 23, 24, 25, 26 for rotating the rotary member 21, 22 having a flat structure rotatable about the fixed shaft 12, , 27).

The rotating members 21 and 22 are constituted by an upper rotating member 21 and a lower rotating member 22 facing each other at a predetermined interval. The upper rotating member 21 and the lower rotating member 22 are coupled to each other. At least one of the upper rotating member 21 and the lower rotating member 22 is rotatably coupled to the fixed shaft 12. [

The fan drive mechanisms 23, 24, 25, 26 and 27 include belt transmission means, a pan motor 26 and a first variable means 27.

The belt drive means of the fan drive mechanisms 23, 24, 25, 26 and 27 includes a first drive pulley 23 rotatable about a Z-axis direction axis parallel to the fixed shaft 12, A first driven pulley 24 fixed on the fixed shaft 12 and a first belt 25 wound on the first driven pulley 23 and the first driven pulley 24, . A timing pulley and a timing belt are preferably applied to the first drive pulley 23 and the first driven pulley 24 and the first belt 25 for fan rotation. Depending on the operating conditions, chain transmission means may be applied instead of such belt transmission means.

The first drive pulley 23 and the first driven pulley 24 are disposed in an area between the upper rotatable member 21 and the lower rotatable member 22. The first drive pulley 23 is rotated in both directions by the power (rotational force) from the fan motor 26. The first variable means 27 mounts the first drive pulley 23 on the lower rotary member 22 so that the distance of the first drive pulley 23 relative to the first driven pulley 24 can be adjusted.

The first variable means 27 is provided on the lower rotary member 22 and is parallel to a virtual center line L1 connecting the first drive pulley 23 and the first driven pulley 24 A first fixing member 271 having a plurality of first slots 272 which are elongated in a direction of the first fixing member 271 and a first fixing member 272 having a first screw hole 274 corresponding to the first slots 272, And a first male screw member 275 coupled to the first screw hole 274 through the first slots 272 to fasten the first moving member 273 to the first fixing portion 271 .

The first moving pulley 23 is rotatably mounted on the first moving member 273 so that the first moving member 273 is disengaged from the first fixed portion 271, When the first moving member 273 is again fastened to the first fixing portion 271, the first driving pulley 23 is rotated by the first driven pulley 271, The spacing distance with respect to the base 24 is adjusted. According to this, the tension of the first belt 25 for rotating the fan can be adjusted and maintained to a required level.

The tilt unit 30 includes a pair of tilts 30 arranged in the vertical direction (Z-axis direction) and opposed to each other with a gap therebetween and an upper end coupled to both sides of the lower rotary member 22, A tilt frame 31 and a pair of tilt frames 31 which are rotatably mounted around an axis in the X axis direction and which simultaneously support a plurality of camera modules 40A and 40B, and a tilt driving mechanism 33, 34, 35, 36, 37 for rotating the camera frame 32 and the camera frame 32.

The pair of tilt frames 31 have a plate-like structure. The pair of tilt frames 31 are provided with a single or a plurality of openings (through holes), and the pair of tilt frames 31 have a predetermined aperture ratio for weight reduction.

The camera frame 32 includes frame bodies 321, 322, and 323 having a plurality of support areas A1 and A2 for supporting the camera modules 40A and 40B, respectively, and support areas A1 and A2 And at least one weight 324 for uniformizing the distribution of the weight applied to the frame bodies 321, 322 and 323 by the camera modules 40A and 40B mounted on the frame bodies 321, 322 and 323.

The frame bodies 321, 322 and 323 are provided with a pair of side frames 321 which are opposed to each other with an interval therebetween and on which a shaft member serving as a rotary shaft is provided, A plurality of partition frames 322 dividing the area into a plurality of support areas A1 and A2 and a mounting frame 323 connected to both ends of the pair of side frames 321. [

The pair of side frames 321 are connected to each other by the partition frame 322 and / or the mounting frame 323. The pair of side frames 321 are provided with a single or a plurality of openings (through holes), and the pair of side frames 321 have a predetermined aperture ratio for weight reduction.

The weight 324 is detached from the mounting frame 323. The weight 324 may be detachably attached to at least one of the mounting frames 323 in a single or plural numbers.

If the distributions of the weights applied to the frame bodies 321, 322 and 323 are different due to the partial or total difference in the weight of the camera modules 40A and 40B mounted on the support areas A1 and A2 , 322, and 323 are heavier), the operation may be unstable or malfunction may occur at the time of fan rotation and / or tilt rotation. The embodiment of the present invention is characterized in that if one of the two mounting frames 323 of the frame bodies 321, 322, and 323 is relatively heavy, the weight of the two mounting frames 323 322 and 323 are mounted on the frame bodies 321, 322 and 323 and weight is added to the other of the two mounting frames 323 to evenly distribute the weight applied to the frame bodies 321, 322 and 323, Can be guaranteed.

The tilt driving mechanisms 33, 34, 35, 36 and 37 include a belt driving means, a tilt motor 36 and a second variable means 37. [

The belt driving means of the tilt driving mechanisms 33, 34, 35, 36, 37 is disposed outside any one of the pair of tilt frames 31. The belt driving means of these tilt driving mechanisms 33, 34, 35, 36 and 37 is constituted by a second drive pulley rotatable about an X axis direction parallel to the rotation axis of the camera frame 32 A second driven pulley 34 fixed on the rotation axis of the camera frame 32 and a second driven pulley 33 paired with each other and a second driven pulley 33 wound on the second driven pulley 34. [ And a belt (second belt) 35. It is preferable to apply a timing pulley and a timing belt to the second drive pulley 33, the second driven pulley 34 and the second belt 35 for tilt rotation. The chain transmission means may be applied instead of such belt transmission means depending on the operating conditions.

The second drive pulley 33 is positioned on the upper side of the tilt frame 31 so as to be close to the fixed shaft 12 and is rotated in both directions by the power (rotational force) from the tilt motor 36. The second variable means 37 mounts the second drive pulley 33 on the outer side of any one of the pair of tilt frames 31 so that the distance of the second drive pulley 33 relative to the second driven pulley 34 can be adjusted.

The second variable means 37 includes a second fixing portion 371 having a plurality of second screw holes 372 provided in any one of the pair of tilt frames 31 and second screw holes 372 And a second slot 374 corresponding to a center line L2 (L2) connecting the center of the second driven pulley 33 and the second driven pulley 34, The second moving member 373 is coupled to the second screw hole 372 through the second slots 374 and the second moving member 373 is coupled to the second fixing portion 371, And a second male screw member 375 for fastening the male screw member 375. [

The second moving pulley 33 is rotatably mounted on the second moving member 373 to release the engagement of the second moving member 373 with respect to the second fixing portion 371, When the second moving member 373 is again fastened to the second fixing portion 371 after the second moving member 373 is moved along the longitudinal direction of the second driven pulley 331, (34) is adjusted. In this way, the tension of the second belt 35 for tilt rotation can be adjusted and maintained to a required level.

The tilt unit 30 includes a pair of inner cases 38 for protecting the camera frame 32 and the camera modules 40A and 40B between the pair of tilt frames 31 and the camera frames 32, .

The pair of tilt frames 31 and the pair of inner cases 38 are coupled to each other by the coupling means 311, 381. The tilt frame 31 and the inner case 38 are provided with a plurality of engagement recesses 311 and engagement protrusions 381, respectively, which are coupled to each other at opposed portions. When the engaging projection 381 is inserted into the engaging groove 311, the tilt frame 31 and the inner case 38 are engaged. According to this coupling structure, since no separate bolt is required for coupling the tilt frame 31 and the inner case 38, it is possible to contribute to weight reduction.

An unillustrated reference numeral 28 is a cap. The cap 28 is coupled to the upper rotating member 21 and rotates together with the upper rotating member 21 to constitute an outer shape and has a photographing opening for allowing the camera modules 40A and 40B to photograph images I have.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Further, the technical ideas described in the embodiments of the present invention may be performed independently of each other, or two or more may be implemented in combination with each other.

10: Fixing unit 11: Fixing member
12: fixed shaft 20: fan unit
21: upper rotating member 22: lower rotating member
23: first drive pulley 24: first driven pulley
25: first belt 26: fan motor
27: first variable means 271: first fixing portion
272: first slot 273: first moving member
274: first screw hole 275: first male screw member
30: tilt unit 31: tilt frame
311: engaging groove portion 32: camera frame
321: side frame 322: compartment frame
323: Mounting frame 324: Weight
33: second drive pulley 34: second driven pulley
35: second belt 36: tilt motor
37: second variable means 371: second fixing means
372: second screw hole 373: second moving member
374: second slot 375: second male screw member
38: inner case 381: engaging projection
40A, 40B: camera module A1, A2: support area

Claims

A fixed unit (10) fixed to an application target; A pan unit (20) rotated in the left-right direction with respect to the fixed unit; A tilt unit (30) rotated in the vertical direction with respect to the fan unit; And a plurality of camera modules (40A, 40B) supported by the tilt unit,
The fixed unit includes a fixed shaft (12) projecting downward,
The fan unit includes a rotary member (21, 22) rotatable about the fixed axis of the fixed unit; A first drive pulley 23 rotatable about an axis parallel to the fixed shaft; A first driven pulley 24 fixed on the fixed shaft; A first belt (25) wound around the first drive pulley and the first driven pulley; A fan motor coupled to the shaft of the first drive pulley to rotate the first drive pulley; And a first variable means (27) for mounting the rotary member on the first drive pulley so as to be adjustable in the distance to the first driven pulley,
Wherein the first variable means includes a first fixed portion provided on the rotary member and having a first slot (272) elongated in a direction in which the first drive pulley is spaced apart from and approach the first driven pulley, (271); A first moving member (273) having a first screw hole (274) corresponding to the first slots of the first fixing part and equipped with the first driving pulley; And a first male screw member (275) coupled to the first screw hole through the first slots to fasten the first moving member to the first fixing portion,
The tilt unit includes a pair of tilt frames (31) which are coupled to the rotating member of the fan unit and are arranged in the vertical direction and face each other; A camera frame (32) rotatably mounted between the pair of tilt frames and supporting the plurality of camera modules; A second drive pulley (33) disposed outside one of the pair of tilt frames and rotatable about an axis parallel to the rotation axis of the camera frame; A second driven pulley 34 paired with the second drive pulley and fixed on the rotation axis of the camera frame; A second belt (35) wound around the second drive pulley and the second driven pulley; A tilt motor (36) coupled to the shaft of the second drive pulley and rotating the second drive pulley; And a second variable means (37) for mounting the second drive pulley on any one of the pair of tilt frames so that the distance between the second drive pulley and the second driven pulley can be adjusted,
The camera frame includes a frame body (321, 322, 323) having a plurality of support areas (A1, A2) for supporting the plurality of camera modules, respectively; And at least one weight (324) for adding a weight for uniformizing the distribution of the weight applied to the frame body by the camera module mounted on each of the support areas,
The second variable means may include a second fixing portion (371) provided on any one of the pair of tilt frames and having a plurality of second screw holes (372); And a second slot (374) corresponding to the second threaded holes of the second fixing portion, the second slot having a second slot (374) in a direction in which the second driving pulley is spaced apart from and approach the second driven pulley A second shifting member 373 formed elongated; And a second male screw member (375) coupled to the second screw hole through the second slots to fasten the second moving member to the second fixing portion.
Pan tilt camera.

The method according to claim 1,
Wherein the frame body comprises:
A pair of side frames (321) facing each other with an interval therebetween and rotatably mounted on the pair of tilt frames;
At least one partition frame (322) for partitioning the pair of side frames into the plurality of support areas;
And a mounting frame (323) connected to both ends of the pair of side frames, the weight being removable,
Pan tilt camera.

The method of claim 2,
Wherein at least one opening for weight reduction is provided in the pair of side frames.

The method according to claim 1,
Wherein at least one opening for weight reduction is provided in the pair of tilt frames.

The method according to claim 1 or 4,
The tilt unit may further include a pair of inner cases (38) interposed between the pair of tilt frames and the camera frame,
Wherein the inner case is provided with a plurality of engaging recesses (311) in a portion thereof facing the inner case, and the inner case is provided with an engaging projection (381)
Pan tilt camera.