JP2003018435A - Oscillating device and oscillating camera employing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized inexpensive motor-driving oscillating device that changes a photographing direction by exerting a driving force from a drive actuator to a camera section so as to move vertically or horizontally the camera section not through a gear or the like when an object is located near and two photographing directions are enough and to provide an oscillating camera employing the device. SOLUTION: An oscillating base employing a permanent magnet that makes the rotor reciprocally rotate, a fixed exciting coil, an output shaft fixed to the rotor, and a camera that is removably engaged with the output shaft being attachable to/detachable from the base are provided. The rotor is energized by the current flowing to the exciting coil and its magnetic action, and stopped at an end position to activate the oscillating base within two angle positions by the output shaft, keeping the base motion between the two angle positions and making the mounted camera face to the two photographing directions alternately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric swinging device capable of changing a shooting direction of a small electronic still camera, a video camera or the like by remote control and a swinging camera using the same.

[0002]

2. Description of the Related Art Conventionally, in a swing camera capable of changing the shooting direction of a video camera or the like by remote control, the driving force from a rotary motor is decelerated by a gear or the like to vertically or horizontally move the camera unit to shoot the shooting direction. Was being changed.

In most cases, the camera section has a zoom function of about 8 to 20 times, and it is general that the photographing direction can be set to several tens of points or more within the swing range. is there. For the setting of the shooting direction, the target direction and the zoom magnification are determined while monitoring the image being shot, or the predetermined direction and the zoom magnification are stored in the memory and automatically directed.

[0004]

However, although the above-described swing camera is suitable for projecting a large target object on a monitor when photographing a wide range including a distant object, it is possible to use a close target object in two directions. If it is enough, for example, to swing up and down according to the height difference with a door camera or to project the range in a room at home, a camera with a lens angle of view of about 50 degrees and a short focus camera Pointing in the direction is sufficient to recognize the target.

The camera unit used for the above purpose has been miniaturized in recent years, and the size of the camera unit including the lens unit, the image pickup unit, and the signal processing unit is 2 cm square. If the driving force from the rotary motor is to be operated by a gear or the like as in the conventional case, there is a problem that the swinging device portion becomes larger than the camera portion and the feature of the small camera cannot be utilized. It was Further, when the two shooting directions are necessary and sufficient, the conventional method requires a means for detecting the shooting direction by a sensor and the like and a means for storing the position, so that the apparatus cannot be made small and inexpensive. .

Further, even in the conventional wide-angle photographing including a distant object, the target is almost always in the horizontal position. For example, in an outdoor surveillance camera, the shooting direction is limited except for the sky and the ground, which are not necessary in the vertical direction, and in a video conference that shows a specified person among a large number of people, the vertical direction is the difference in height. It may be enough to shake the head a little. The conventional swing camera for that purpose has the same function in the up-down direction as the left-right direction, and the up-down direction becomes unnecessarily necessary, which causes a large cost.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a small and inexpensive electric swinging device and a swinging camera using the same.

[0008]

According to the present invention, a permanent magnet rotor magnetized to have two poles and reciprocally rotated by a predetermined rotation angle within 180 degrees, one fixed exciting coil, and the rotor. In a swinging table or a swinging camera in which a fixed output shaft and a camera that engages with the output shaft and is movable are detachable, the rotor rotates by a magnetic action of the current flowing through the exciting coil and the rotor. And stops at the end position, the swing table is moved to two positions by the output shaft, and the two positions are held by the current or the biasing force applied to the exciting coil, and are mounted by the two positions. A camera swing head or a swing camera characterized in that the camera faces two shooting directions.

Further, the swing camera according to the present invention is
It is a swing camera characterized in that the photographing ranges in the two photographing directions partially overlap each other, or the two photographing directions can be changed.

Further, the swing camera according to the present invention is
It is a swinging camera characterized in that a swinging mechanism of a swinging camera in two directions is combined with a swinging mechanism which operates in three or more directions and swinging directions.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of an electric swinging apparatus and a swinging camera using the same according to the present invention will be described below with reference to a neck for swinging vertically and horizontally to change the shooting direction. A swing camera will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing an overall schematic configuration.
The camera unit 3 including the lens unit 1 and the image pickup unit 2 is rotatably supported by the rotary frame 5 by the rotary shafts 3A and 3B formed on the vertical axis Y, and the lens axis Z, which is the shooting direction, is movable in the L direction. It is supposed to do. Further, the camera unit 3 is adapted to be movable by engaging with the output shaft 7 of the electromagnetic actuator 6 screwed to the rotating frame 5 and the slit 3C formed in the camera unit 3 to drive the electromagnetic actuator 6. Driven by

The rotation range of the camera section 3 is in contact with the tips of the adjusting screws 8 and 9 attached to the rotary frame 5 (the tip of the adjusting screw 8 is 8A) and the arm section 3D formed in the camera section 3. It is regulated by that. By rotating the adjusting screws 8 and 9, the amount of protrusion of the tip portion can be adjusted, and thus the photographing direction at the both end stop positions in the L direction on the lens axis Z can be adjusted. (Refer to FIG. 2) The means for adjusting the photographing direction of the both end stop position is not limited to the above-mentioned embodiment, and a means for regulating the both end stop position to any movable part for moving the lens axis Z in the L direction is provided. It should be provided.

As described above, the camera swings left and right (L direction). Next, the vertical swinging motion (H direction) of the camera will be described.

The rotary frame 5 supporting the camera section 3 and the electromagnetic actuator 6 is rotatably supported by the support body 10 by rotary shafts 5A and 5B formed on the horizontal axis X of the rotary frame 5.
The lens axis Z, which is the shooting direction, is movable in the H direction. Further, the rotary frame 5 is adapted to be movable by engaging with the output shaft 12 of the electromagnetic actuator 11 screwed to the support body 10 and the slit 5C formed in the rotary frame 5 to drive the electromagnetic actuator 11. Moved by force.

The rotation range of the rotary frame 5 is the electromagnetic actuator 1.
The projections 11A and 11B formed in 1 and the arm 5D formed on the rotary frame 5 are regulated by contacting each other, and thus the photographing direction of the both end stop positions in the H direction on the lens axis Z is determined. Has been done. Although the above example is described in the present embodiment, the photographing direction at the both end stop position is provided with a means for regulating and adjusting the both end stop position in any of the movable parts for moving the lens axis Z in the H direction. It goes without saying that it is good.

In this embodiment, the same swinging mechanism is provided in both the vertical and horizontal directions, but the conventional swinging mechanism and the swinging direction can be combined according to the required shooting direction and shooting range. it can.

Next, the internal structure of the electromagnetic actuator will be described. Here, the invention of claim 7 or 10 will be described first as an embodiment.

As shown in FIG. 3, the output shaft 7 is fixed to the rotor 20 made of a permanent magnet of a cylindrical shape magnetized in two poles so as to pass through the center of the cylinder, and inside the bobbin 22 and the bobbin 23. It is rotatably supported.

Further, as shown in FIG. 4, the bobbin 22 and the bobbin 23 connected to each other are provided with an exciting coil 24 so as to surround the rotor 20 therein.
Terminal pins 26 and 27 for winding the wire end of No. 4 are fixed. Further, ferromagnetic materials 28 and 29 are arranged in the bobbin 22 so as to be buried in the holes provided in the bobbin 22.

The drive unit 30 constructed as described above is enclosed and enclosed by a hollow cylindrical magnetic circuit member (yoke) 31, a printed wiring board 32 connected to the exciting coil 24, and a cover 33.

Next, the operation of the camera section and the electromagnetic actuator will be described. FIG. 5 shows the relationship of operations.
The rotor 20 magnetized into two poles is stopped at the first stop position in a state where the N pole side is magnetically attracted to the ferromagnetic material 29 and the arm portion 3D formed on the camera portion 3 is in contact with the adjusting screw 8. Cage,
The photographing direction of the camera unit 3 is oriented in the A direction. The second stop position of the rotor 20 is in a state in which the S pole side is magnetically attracted to the ferromagnetic body 28 and the arm portion 3D is in contact with the adjusting screw 9. At this time, the photographing direction of the camera portion 3 is directed to the B direction. Will be done.

The rotor 20 rotates clockwise or counterclockwise due to the magnetic action with the rotor 20 depending on the direction of the current flowing through the exciting coil 24. At this time, the current passed through the exciting coil 24 may be a pulse current only for the time of rotation, and the holding at the stop position is performed by magnetic attraction between the magnetic pole of the rotor and the ferromagnetic material, so that power is saved. Further, the holding at the stop position is not limited to the above means, and for example, a spring 34 as shown in FIG. 6 may be used.

The photographing direction A or B of the camera shown in FIG. 5 is determined by the adjusting screw 8 or 9 with which the arm portion 3D formed on the camera portion 3 abuts, and as described in FIG. 1, the adjusting screw 8 or 9 is used. By rotating the lens, the amount of protrusion of the tip can be adjusted, and the photographing direction A or B can be changed accordingly. At this time, if the photographing ranges A1 and B1 in the photographing directions A and B partially overlap, the photographing blind spot in the camera swing range can be eliminated.

Next, an embodiment of the invention of claim 6 or 9 will be described. This is a case where the ferromagnetic material 29 is arranged only on the N pole side of the rotor 20 as shown in FIG. Rotor 2
In 0, the N pole is attracted to the ferromagnetic body 29 within the rotation range. The rotor 20 is rotated by continuously supplying a current to the exciting coil 24 so that the rotor 20 rotates in the direction opposite to the attracting direction, and the arm portion 3D formed on the camera portion 3 abuts on the adjusting screw 9. The camera is stopped and held, and the shooting direction of the camera is turned to the B direction. Further, by turning off the current flowing through the excitation coil 24, the rotor 20 is attracted by the attraction.
Is rotated, the arm 3D and the adjusting screw 8 are brought into contact with each other to be stopped and held, and the photographing direction of the camera is directed to the A direction. Needless to say, the ferromagnetic material may be arranged on the S pole side, and the attraction may be performed by a spring or the like.

Next, an embodiment of the invention of claim 5 or 8 will be described. This is the case where no ferromagnetic material is arranged as shown in FIG. The rotor 20 rotates rightward or leftward depending on the direction of the current flowing through the exciting coil 24, and by continuing to flow the current, the arm portion 3D formed on the camera portion 3 comes into contact with the adjusting screw 8 or 9 and is stopped and held. The shooting direction of the camera can be directed to the A direction or the B direction.

Although the embodiments of the inventions of claims 5 to 10 have been described as swing cameras, the camera unit 3 of FIG. 1 may be a detachable swing platform of the camera. It is the embodiment of claim 2, 3 or 4.

[Brief description of drawings]

FIG. 1 Overall configuration diagram

FIG. 2 is an explanatory diagram of a shooting direction

FIG. 3 is a configuration diagram of a rotor unit

FIG. 4 is a block diagram of an electromagnetic actuator.

[Fig. 5] Operation explanatory diagram

FIG. 6 is another embodiment of the holding means.

FIG. 7: Embodiment of claim 6 or 9

FIG. 8: Embodiment of claim 5 or 8

[Explanation of symbols]

1 lens part 2 Imaging unit 3 camera section 5 rotating frame 6 Electromagnetic actuator 7 Output shaft 8 adjustment screws 9 Adjustment screw 10 Support 11 Electromagnetic actuator 12 Output shaft 20 rotor 22 Bobbin 23 Bobbin 24 Excitation coil 28 Ferromagnet 29 Ferromagnet 30 Drive 34 Spring

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2H105 AA06 AA12                 5C022 AA01 AB62 AC27 AC74 AC78                 5H633 BB03 BB15 GG02 GG05 GG06                       GG09 GG18 GG23 GG30 HH03                       HH06 JA05 JB02 JB05 JB09

Claims (14)

[Claims] 1. A swinging device equipped with a rotary base mounted on a machine frame so as to be rotatable in at least one direction, and an electromagnetic drive means having a rotor and a stator for driving the rotary base. One is composed of a permanent magnet having two poles facing each other by 180 degrees and the other is composed of a single exciting coil that applies a rotational force to this permanent magnet, and this rotor is rotated only within a predetermined angle range within 180 degrees. A restricting means for restricting movement and an exciting coil energization controlling means for energizing and holding the rotor by the restricting means while the exciting coil is energized are provided to hold the rotary table at two points within a predetermined angle. A swinging device characterized in that 2. A permanent magnet rotor magnetized into two poles and reciprocally rotated by a predetermined rotation angle within 180 degrees, one fixed exciting coil, an output shaft fixed to the rotor, In a swing table on which a camera that engages with an output shaft and is movable is detachable, the rotor is rotated rightward or leftward by a magnetic action with the rotor according to a direction of a current flowing through the exciting coil, and the end is rotated. The camera is stopped at a position, the swing table is moved to two positions by the output shaft, and the two positions are held by continuously supplying a current to the exciting coil. A swinging head for a camera, characterized by facing in one shooting direction. 3. A rotor made of a permanent magnet that is magnetized into two poles and reciprocally rotates within a predetermined rotation angle within 180 degrees, one fixed excitation coil, an output shaft fixed to the rotor, In a swing table on which a camera that engages with an output shaft and is movable is detachable, the rotor is held by a biasing force at a first position, which is one rotation end, and a current is passed through the exciting coil to cause the rotor to move. The magnetic action with the rotor stops the movement to the second position, which is the other rotation end, and the swing table is moved to two positions by the output shaft, and a current flowing through the excitation coil at the two positions is applied. ON or OFF
A swinging base for a camera, wherein the camera is held by being brought into a state, and the camera mounted by the two positions faces two shooting directions. 4. A rotor made of a permanent magnet which is magnetized into two poles and reciprocally rotates by a predetermined rotation angle within 180 degrees, one fixed exciting coil, an output shaft fixed to the rotor, In a swing table on which a camera that engages with an output shaft and is movable is detachable, the rotor is held by biasing forces at positions of both ends of rotation, and the rotor is rotated according to a direction of a pulse current flowing through the exciting coil. By the magnetic action of and from one end position to the other end position, the swing shaft is moved to two positions by the output shaft and held,
The camera swing head is characterized in that the camera mounted in one of two positions faces in two shooting directions. 5. A rotor made of a permanent magnet that is magnetized into two poles and reciprocally rotates within a predetermined rotation angle within 180 degrees, one fixed excitation coil, an output shaft fixed to the rotor, In a swing camera including at least a lens unit that is engaged with an output shaft and is movable, and an imaging unit, the rotor is moved rightward or leftward by a magnetic action with the rotor depending on a direction of a current flowing through the exciting coil. Pivoting, characterized by rotating and stopping at an end position, directing the imaging unit in two imaging directions by the output shaft, and holding the two imaging directions by continuing to flow a current through the exciting coil. camera. 6. A rotor made of a permanent magnet that is magnetized into two poles and reciprocally rotates by a predetermined rotation angle within 180 degrees, one fixed excitation coil, an output shaft fixed to the rotor, In a swing camera provided with at least a lens portion and an image pickup portion that are engaged with an output shaft and movable, the rotor is held by a biasing force at a first position, which is one of the turning ends, and a current is applied to the exciting coil. Flow to stop the movement to the second position, which is the other rotation end, by the magnetic action with the rotor, direct the imaging unit in two imaging directions by the output shaft, and excite the two imaging directions. A swing camera that holds an electric current flowing through a coil by turning it on or off. 7. A rotor made of a permanent magnet which is magnetized into two poles and reciprocally rotates within a predetermined rotation angle within 180 degrees, one fixed exciting coil, an output shaft fixed to the rotor, In a swing camera provided with at least a lens portion and an image pickup portion that are movable by engaging with an output shaft, the rotor is held by biasing force at positions of both ends of rotation, and a direction of a pulse current flowing through the exciting coil. According to the above, the swing camera is moved from one end position to the other end position by a magnetic action with the rotor, and holds the imaging unit in two imaging directions by an output shaft. 8. A rotor made of a permanent magnet which is magnetized into two poles and reciprocally rotates by a predetermined rotation angle within 180 degrees, and an exciting coil arranged so as to surround the rotor in a magnetic pole direction in an axial direction. In a swing camera including an output shaft fixed to the rotor, and at least a lens unit that is movable by engaging with the output shaft, and an imaging unit, the rotor may be arranged in accordance with a direction of a current supplied to the exciting coil. Due to the interaction between the generated magnetic field direction and the magnetic field direction of the rotor, the rotor rotates rightward or leftward and stops at the end position, and the imaging unit is directed by the output shaft in two imaging directions, and the two imaging directions are described above. A swing camera characterized by holding an exciting coil by continuously passing a current through it. 9. A rotor made of a permanent magnet, which is magnetized into two poles and reciprocally rotates within a range of 180 degrees by a predetermined rotation angle, and an exciting coil arranged so as to surround the rotor in a magnetic pole direction in an axial direction. A ferromagnetic body disposed at one rotation end of the rotor with a predetermined space, an output shaft fixed to the rotor, and at least a lens unit and an imaging unit which are movable by engaging with the output shaft. In a swing camera provided with the rotor, the rotor is held at a first position, which is one of the rotating ends, by a magnetic attraction force with the ferromagnetic body, and a magnetic field direction generated according to a direction of a current flowing through the exciting coil is generated. Due to the interaction with the magnetic field direction of the rotor, the movement of the imaging unit is stopped at the second position, which is the other rotation end, and the imaging unit is directed to two imaging directions by the output shaft, and the two imaging directions are directed to the excitation coil. ON the current to flow or A swing camera that is held by being turned off. 10. A rotor made of a permanent magnet that is magnetized into two poles and reciprocally rotates within a predetermined rotation angle within 180 degrees, and an exciting coil arranged so as to surround the circumference of the rotor in the magnetic pole direction in the axial direction. A rotor provided with a ferromagnetic material disposed at both ends of rotation of the rotor with a predetermined space, an output shaft fixed to the rotor, and at least a lens unit and an image pickup unit which are movable by engaging with the output shaft. In the swing camera, the rotor is held at each position of both ends to be rotated by a magnetic attraction force with the ferromagnetic material, and the magnetic field direction and the magnetic field of the rotor generated according to the direction of the pulse current flowing in the exciting coil. A swing camera that moves from one end position to the other end position by interaction with the direction and holds the imaging unit in two shooting directions by an output shaft. 11. The swing camera according to claim 5, wherein the shooting ranges in the two shooting directions partially overlap each other. 12. The image pickup device according to claim 5, further comprising means for adjusting a stop position of both ends of the movable image pickup unit, whereby two image pickup directions can be changed. A swing camera that is characterized. 13. A swing camera having an image pickup device that swings vertically and horizontally by remote control to change a shooting direction, wherein the neck of the swing camera according to any one of claims 5 to 10. A swing camera that uses the swing mechanism vertically and horizontally. 14. A swing camera having an image sensor for swinging vertically and horizontally by a remote operation to change a shooting direction, the neck of the swing camera according to claim 5. A swing camera in which the swing mechanism is combined with a swing mechanism that operates in three or more directions, and the swing mechanism is combined for each swing direction.