JPH06265982A - Universal head device - Google Patents

Abstract

PURPOSE:To provide a universal head device for which an inexpensive and small-sized bearing can be used, whose fitting space can be reduced and by which required strength and the stable rotation of a rotary shaft can be obtained. CONSTITUTION:A frame 1 is molded by being extruded (pulled-out) into a deformed square pillar having a hollow part. Then, a first turnable rotary shaft 8 is laid between the front and the back walls of the frame 1 whose structure is strong through the first bearings 5 and 5 for a long span. Simultaneously, a second turnable rotary shaft 8A is laid between the top and the bottom walls of the frame 1 through the second bearings 5A and 5A for a long span.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pan head device for rotating a small surveillance camera, television camera or the like mounted therein in a pan direction and a tilt direction, and displacing the photographing direction vertically and horizontally.

[0002]

2. Description of the Related Art Surveillance cameras are installed on ceilings and the like in wedding halls and buildings through pan head devices. These surveillance cameras operate in pan and tilt directions based on the operation of the pan head devices. It has the function of shooting a subject while rotating and turning vertically and horizontally.

Although not shown, the pan head device has a large structure (even the smallest pan head device has a size equivalent to a dictionary) and has a short span directed in each of the pan direction and the tilt direction. A plurality of rotating shafts are provided, and a table on which a surveillance camera or the like is mounted is fitted to the tip ends of the plurality of rotating shafts. Then, a gear is built in with the bearing sandwiched, and a plurality of rotating shafts are configured to rotate in conjunction with each other.

However, since the bearing portion has a short span, an expensive and large-sized bearing is always used in the conventional platform apparatus from the viewpoint of ensuring stability and strength.

Further, from the viewpoint of ensuring a long and large span, a pair of base plates having an L-shape so as to form a substantially mouth shape are assembled to each other through a gap in the pan head device, and the base plates are opposed to each other. There is also a structure in which a plurality of columns for connection are vertically installed between the long side portions, and a general bearing is arranged on each of the pair of base plates.

However, in the platform device of this kind of structure, the number of parts is increased, the number of steps and the parts cost are increased, and moreover, there is no choice but to secure a mounting space for a plurality of columns.

[0007]

Since the conventional platform device is constructed as described above, the required strength and rotation are required unless a large bearing of a large size is used and a large mounting space is secured. There is a problem that the stability of rotation of the shaft cannot be obtained. Furthermore, unless a large number of parts and a large mounting space are secured, there is a problem that required strength and rotation stability of the rotary shaft cannot be obtained.

The present invention has been made in view of the above, and an inexpensive and small size bearing can be used, a mounting space can be reduced, and through these, necessary strength and rotation stability of the rotating shaft can be obtained. It is intended to provide a pan head device that can obtain

[0009]

In order to achieve the above-mentioned object in the present invention, a substantially cylindrical frame having a hollow portion, a first drive mechanism incorporated in the frame, and the frame facing each other. A first rotary shaft that is axially mounted between the opposing walls and that rotates based on the drive of the first drive mechanism, and a first table that is fitted to the protruding portion that projects from the frame of the first rotary shaft, A second drive mechanism built in the frame and a second drive mechanism which is axially mounted between other opposing walls of the frame which intersect with the first rotation axis and which rotates based on the drive of the second drive mechanism. Two rotation shafts, and a second table fitted to a protrusion protruding from the frame of the second rotation shaft, at least one of the first table or the second table Items are loaded.

[0010]

According to the present invention, the frame is extrusion-molded (pull-molded) into a solid rectangular tube having a hollow portion, and the rotatable first frame is provided between the opposing walls of the frame.
The rotary shaft of is laid over a long span, and the rotatable second rotary shaft is laid over a long span between the other opposing walls of the frame.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in FIGS.

As shown in FIG. 1, the electric small-sized pan head device according to the present invention is provided with a first prism in a substantially rectangular frame 1.
Drive unit 16 for rotating the rotary shaft 8 and second drive unit 16A for rotating the second rotary shaft 8A
And are arranged respectively.

As shown in FIG. 1, the frame 1 is extrusion-molded (pull-molded) into a substantially rectangular tube shape having a size of two match boxes from the viewpoint of manufacturing cost reduction and the like, and an L-shaped mounting frame 2 is formed. It is detachably mounted, and rectangular side plates 3 are respectively screwed to the left and right sides of the opening through a plurality of screws.

More specifically, the frame 1 is extrusion-molded from an integral combination of two large and small L-shaped plates having different sizes to form a strong deformed prismatic tube having a hollow structure.

Through holes 4 are formed in the front surface and the back surface of the frame 1 so as to be mutually equal, and inexpensive and small first bearings 5 are inserted into the plurality of through holes 4 via screws. Each is fitted.

Further, through-holes 4A that are mutually equal are bored longitudinally in the upper surface portion and the bottom surface portion of the frame 1, and the plurality of through-holes 4A are inexpensive and small second bearings 5A. Are respectively fitted via screws.

As shown in FIG. 1, cutouts 1a are cut into the free end of the upper surface of the frame 1 extending toward the rear surface and the free end of the front surface toward the bottom surface. There is.

Further, as shown in FIG. 1, the mounting frame 2 is provided with a circuit board 6 which covers one opening side surface of the frame 1 in a biased manner toward the side surface of the inner surface portion thereof, and the upper and bottom surfaces of the rising surface portion are bottomed. The notch 2a is cut in half at the front end of the portion, and the plurality of notches 2a are respectively joined to the plurality of notches 1a of the frame 1 so that the frame 1 and the frame 1 are mutually notched. It is structured to

At the time of this phaseless coupling, as shown in the same figure, the first substrate 7 having a rectangular shape is provided between the rear surface of the frame 1 and the vertical surface of the mounting frame 2 of the frame 1. Between the bottom surface portion and the flat bottom surface portion of the mounting frame 2, a second substrate 7A having a rectangular shape is arranged in a vertical state or a horizontal state.

On the other hand, as shown in FIG. 1, the first rotary shaft 8 is rotatably mounted horizontally between the first bearings 5 of the frame 1 so as to be forward from the front of the frame 1. A circular first table (first table) 9 is fitted to the projecting tip through a screw.

The first rotary shaft 8 inside the frame 1
A first power transmission gear 10 that transmits the driving force from the first drive unit (first drive mechanism) 16 to the first rotary shaft 8 is fitted in the first rotary shaft 8 and the first rotary shaft 8 A positioning pin 11 for preventing the forward and backward movement is inserted.

Further, an inexpensive washer 12 and an E-ring 13 which act as a locking device and a bearing are fitted on the first rotary shaft 8 which projects rearward from the rear surface of the frame 1, and
A disk-shaped first position detecting element 14 having a plurality of brushes is fitted to the rear end of the rotary shaft 8 of the first rotary shaft 8.
The position detecting element 14 of (1) is detected by the first encoder 15.

The first encoder 15 for detecting the position based on the contact with the brush is attached to the upright portion of the first substrate 7, as shown in FIG.

The first drive unit 16 for generating and transmitting a large driving force is provided with a mounting bracket 160, on which an inexpensive small motor 161 is mounted sideways and is A plurality of reduction gears 162 having different sizes are rotatably fitted therein.

The first drive unit 16 is shown in FIG.
As shown in FIG. 2, the frame 1 is screwed in a state of being erected on the upper front side of the frame 1 with a screw, and is screwed in a state of surrounding the periphery of the first rotary shaft 8 from the viewpoint of preventing the occurrence of dead space. It is worn.

The mounting bracket 160 is, as shown in FIG. 5, FIG. 7, or FIG. 8, an L-shaped ground plate 160a facing each other.
And a slightly smaller base plate 160b, a plurality of shafts 163 and a plurality of reduction gear shafts, which secure an installation space, are respectively installed between the plurality of reduction gear shafts.
A plurality of reduction gears 162, which are sequentially decelerated and rotated as the gear of the first output shaft rotates, are fitted in a state of meshing with each other.

As shown in FIG. 4, the small motor 161 and the plurality of reduction gears 162 are mounted in an array state surrounding the front portion of the first rotary shaft 8 from the viewpoint of preventing the occurrence of dead space. Or, it is inserted.

On the other hand, as shown in FIG. 1, the second rotary shaft 8A is made of the same member as the first rotary shaft 8 and has the same structure, and is provided between the second bearings 5A and 5A of the frame 1. The second table (second table) 9 having the same structure and shape as the first table 9 is provided on the upper end portion that is rotatably supported in a vertical state and projects upward from the upper surface of the frame 1.
A is fitted via a screw.

However, as shown in the figure, the second rotating shaft 8A is mounted on the frame 1 in a vertical state orthogonal to the adjacent first rotating shaft 8.

The second rotating shaft 8 inside the frame 1
A has a second drive unit (second drive mechanism) 16A.
The second power transmission gear 10A for transmitting the driving force from the second rotation shaft 8A to the second rotation shaft 8A is fitted and the second rotation shaft 8A
A positioning pin 11A for preventing the vertical movement of A is inserted. The second power transmission gear 10A is fitted in a state of being adjacent to the first power transmission gear 10.

The second rotating shaft 8A protruding downward from the bottom surface of the frame 1 is fitted with an inexpensive washer 12A and an E-ring 13A, which serve as a lock and a bearing, to form a second rotating shaft. A disk-shaped second position detecting element 14A having a plurality of brushes is fitted to the lower end of 8A, and the position of the second position detecting element 14A is detected by the second encoder 15A. It has become so.

The second encoder 15A for detecting the position based on the contact with the brush is attached to the flat surface of the second substrate 7A as shown in FIG.

The second drive unit 16A, which generates and transmits a large drive force, is mounted on the mounting bracket 160.
An inexpensive small motor 161A is mounted upright on the mounting bracket 160, and a plurality of reduction gears 162 of different sizes are rotatably fitted in the mounting bracket 160. It is screwed in a state in which it is laid on its side with a screw.

The mounting bracket 160, as shown in FIG. 5, FIG. 7 or FIG. 8, is an L-shaped ground plate 160a facing each other.
And a slightly smaller base plate 160b, a plurality of shafts 163 and a plurality of reduction gear shafts, which secure an installation space, are respectively installed between the plurality of reduction gear shafts.
A plurality of reduction gears 162 that are sequentially decelerated as the gears of the output shaft 1A rotate are fitted in a state where they mesh with each other.

As shown in FIG. 5, the small motor 161A and the plurality of reduction gears 162 are connected to the second rotary shaft 8A.
Are mounted or fitted in an array state surrounding the upper part of the.

However, the second drive unit 16A is constructed of the same members as the first drive unit 16 and has the same structure, and when the second drive unit 16A is attached to the frame 1, the first drive unit 16A has the first structure from the viewpoint of preventing the occurrence of dead space. The drive unit 16 and the drive unit 16 are alternately assembled and screwed so as to surround the upper periphery of the second rotating shaft 8A (see FIG. 5).

More specifically, the first drive unit 16 and the second drive unit 16A are positioned horizontally to the left of the vertically positioned small motor 161A, as shown in FIGS. The small motors 161 are arranged adjacent to each other, and are arranged in a close combination such that the second drive unit 16A is located above the first drive unit 16.

Therefore, as shown in FIG. 9, a small surveillance camera (article) 19 is mounted on the first table 9 through the L-shaped mounting plate 18, and the second table 9A is hung on the ceiling of the room. If you want to rotate the surveillance camera 19 in the pan direction and tilt direction in the fixed state,
The drive unit 16 and the second drive unit 16A may be individually driven.

Then, the small motor 161 of the first drive unit 16 is driven to sequentially rotate the plurality of reduction gears 162, and the rotation of the plurality of reduction gears 162 causes the first power transmission gear 10 to rotate. Rotate the first rotating shaft 8,
As shown by the arrow in FIG. 9, the first table 9 rotates to rotate the surveillance camera 19 in the vertical direction.

When the surveillance camera 19 is turned, the position of the rotating first position detecting element 14 is set to the first encoder 15
The position of the surveillance camera 19 is detected by the highly accurate detection.

Further, in synchronization with the driving of the first drive unit 16, the small motor 161A of the second drive unit 16A.
Drive to sequentially rotate the plurality of reduction gears 162, and as the plurality of reduction gears 162 rotate, the second power transmission gear 10A rotates to rotate the second rotation shaft 8A. As shown, the main body of the tripod head device rotates in the horizontal direction to rotate the surveillance camera 19 in the same direction.

When the main body of the camera platform device and the surveillance camera 19 are rotated, the position of the rotating second position detecting element 14A is detected by the second encoder 15A with high accuracy, so that the surveillance camera 19 moves. The position is detected.

According to the above construction, the frame 1 is extruded and molded so as to have a strong deformed prismatic shape having a hollow portion,
Moreover, between the front and rear walls of the rigid frame 1, the rotatable first rotary shaft 8 is mounted over a long span via the first bearings 5, 5, and between the upper and lower walls of the frame 1. ,
The rotatable second rotation shaft 8A is the second bearing 5A, 5A.
Will be mounted over a long span.

Therefore, an inexpensive and small-sized bearing can be used instead of an expensive and large-sized bearing, and it is not necessary to secure a mounting space necessary for erection of a plurality of columns, so that a wasteful space can be saved. It can be omitted to reduce the installation space.

Further, through these, it becomes possible to easily obtain the necessary strength and the stability of rotation of the first rotary shaft 8 and the second rotary shaft 8A. Furthermore, since it is possible to omit multiple pillars that were always used in the past, the number of parts increases,
In addition, it can be expected to prevent an increase in the number of processes and component costs.

In the above embodiment, L is stored in the first table 9.
A small surveillance camera 19 is mounted via a character-shaped mounting plate 18, and the second table 9A is hung and fixed to the ceiling of the room. However, depending on the use, purpose, or place of use, etc. Needless to say, the positions may be reversed, and the positional relationship between the front, rear, left, right, and top of the pan head device may be changed as appropriate.

Further, in the above embodiment, the first table 9
Although the small surveillance camera 19 is mounted via the L-shaped mounting plate 18 in the above, a television camera, an 8 mm camera, a microphone, a light, or the like may be appropriately mounted instead of the surveillance camera 19. The same effects as those of the above-described embodiment are obtained.

[0048]

As described above, according to the present invention, an inexpensive and small size bearing can be used, and
Since it is not necessary to secure a mounting space necessary for standing a plurality of pillars, there is a remarkable effect that a wasteful space can be omitted and the mounting space can be significantly reduced.

Further, through these effects, it is possible to obtain the necessary strength and the stability of rotation of the first rotary shaft and the second rotary shaft very easily, which is a special effect. Further, since the plurality of pillars can be surely omitted, there is an excellent effect that the increase in the number of parts and the increase in the number of steps and the cost of parts can be surely prevented.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a platform device according to the present invention.

FIG. 2 is a plan view showing an embodiment of a tripod head device according to the present invention.

FIG. 3 is a plan view showing an embodiment of a tripod head device according to the present invention.

FIG. 4 is a front view showing an embodiment of a tripod head device according to the present invention.

FIG. 5 is a side view showing an embodiment of a tripod head device according to the present invention.

FIG. 6 is a front view showing an embodiment of a platform device according to the present invention.

FIG. 7 is an explanatory plan view showing a first drive unit and a second drive unit of the platform device according to the present invention.

FIG. 8 is a side view showing a first drive unit and a second drive unit of the platform apparatus according to the present invention.

FIG. 9 is an explanatory diagram showing a usage state of the platform device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame, 8 ... 1st rotating shaft, 8A ... 2nd rotating shaft, 9 ... 1st table, 9A ... 2nd table, 16
... first drive unit, 16A ... second drive unit,
161, 161A ... Small motor, 19 ... Surveillance camera.

Claims (1)

[Claims] 1. A substantially cylindrical frame having a hollow portion, a first drive mechanism incorporated in the frame, and a first drive mechanism which is axially mounted between opposing walls of the frame. A first rotary shaft that rotates based on the first rotary shaft, a first table that is fitted to a projecting portion of the first rotary shaft that projects from the frame, a second drive mechanism that is built in the frame, and A second rotating shaft which is erected between other opposing walls of the frame which intersect with the rotating shaft of the second rotating shaft and which is rotated by the drive of the second driving mechanism, and which protrudes from the frame of the second rotating shaft. A second table fitted to the protruding portion,
A pan head device, wherein articles are mounted on at least one of the first table and the second table.