JP3754789B2 - Electric head system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric pan head device in which a plurality of components are connected by a cable.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a video camera is known in which a video camera main body including a recording unit, a signal processing unit, a display unit, an operation unit, and the like is separated from a camera head unit including an imaging optical system and an imaging element, and the two are connected by a cable. It has been. FIG. 7 shows the appearance of such a video camera. In the figure, reference numeral 40 denotes a video camera body, 41 denotes a camera head, and 42 denotes a cable.
[0003]
In this video camera, the camera head 41 can be mounted on the video camera body 40 for use. In addition, the cable 42 is exposed to the outside at the time of mounting, and has a curled shape as illustrated.
[0004]
[Problems to be solved by the invention]
However, in the conventional video camera, when the camera head 41 is mounted on the video camera main body 40, the curled cable 42 is hung and it is difficult to obtain a good appearance as a product because of its unsightly appearance. . Further, the cable 42 has a certain length and cannot be easily routed as it is.
[0005]
In view of such circumstances, an object of the present invention is to provide an electric pan head apparatus that is particularly excellent in cable storage and always guarantees a good appearance configuration.
[0006]
[Means for Solving the Problems]
The electric pan head apparatus of the present invention is configured to wind up the cable in the electric pan head apparatus that is connected to a cable that transmits and receives a predetermined signal and is driven through a drive mechanism. A cable winding means is provided, and the cable winding means can be selectively operated by a driving force applied to the drive mechanism.
[0007]
In the electric pan head apparatus according to the present invention, the cable winding means is configured to be interlocked with the drive mechanism.
[0008]
Further, the electric head device according to the present invention has driving force transmission control means for switching a driving force transmission path in the driving mechanism so that the driving force of the driving mechanism can be transmitted to the cable winding means. It is characterized by.
[0009]
In the electric head device according to the present invention, the drive mechanism includes a planetary gear mechanism, and a panning operation is performed via the planetary gear mechanism.
In the electric pan head apparatus according to the present invention, the drive mechanism includes a worm / worm wheel mechanism, and a panning operation is performed via the worm / worm wheel mechanism.
[0010]
In the electric head device according to the present invention, an imaging device is mounted.
In addition, the electric head device of the present invention is configured to wind up the cable in the electric head device which is connected to a cable for transmitting and receiving a predetermined signal and is driven through a driving mechanism. The cable winding means is configured to be interlocked with the drive mechanism.
In addition, the electric head device of the present invention is configured to wind up the cable in the electric head device which is connected to a cable for transmitting and receiving a predetermined signal and is driven through a driving mechanism. And a driving force transmission control means for switching a driving force transmission path in the driving mechanism, so that the driving force of the driving mechanism can be transmitted to the cable winding means. To do.
In addition, the electric head device of the present invention is configured to wind up the cable in the electric head device which is connected to a cable for transmitting and receiving a predetermined signal and is driven through a driving mechanism. The drive mechanism includes a planetary gear mechanism, and a panning operation is performed via the planetary gear mechanism.
[0011]
[Action]
According to the present invention, a drive mechanism including a motor, a pulley, a gear, and the like, and a cable winding means are included. Furthermore, a driving force transmission control means for switching a driving force transmission path in the driving mechanism is provided, and the means for selecting whether to use the power generated by the driving mechanism for the head or the cable winding, the head or the cable winding means The power to be transmitted to is transmitted or cut off.
[0012]
By having the cable winding means on the electric head, the cable is wound around the cable winding portion when the electric head is attached to the device connected via the cable. In addition, since the power for driving the pan head of the electric head is transmitted to the cable winding means, the cable can be wound by this power. By winding the cable in this way and storing it in the apparatus, the appearance is clear, and the cable is easy to handle without being in the way, and usability can be improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of an electric pan head apparatus according to the present invention will be described in detail with reference to FIGS.
1 and 2 show a schematic configuration of an electric head device according to an embodiment of the present invention. FIG. 1 is a main configuration diagram, and FIG. 2 is a view of the planetary gear train of FIG. 1 as viewed from above. In the figure, reference numeral 14 denotes a camera head, and reference numeral 13 denotes a tilting mechanism including a motor, a pulley and a gear. The tilt of the camera head 14 supported by the camera table can be changed by the operation of the tilting mechanism. These are attached to the chassis 15. The chassis 15 has a disk shape and is rotatably supported by the bearing 12 in the vicinity of the peripheral edge.
[0014]
Reference numeral 1 denotes a panning motor, which is installed at the center of the electric head device. 2 is a sun gear coupled to the rotating shaft of the panning motor, 3 is three planetary gears, 4 is a ring gear, and 5 is a cable winding drum to which the rotating shaft 3a of the planetary gear is coupled. A panning drive mechanism composed of a planetary gear train is configured. The cable winding drum 5 is rotatably supported by a bearing 11. The ring gear 4 is fixed to the chassis 15. (The planetary gear train in FIG. 1 is shown as a cross-sectional view taken along the line AA in FIG. 2.)
[0015]
Reference numeral 6 denotes a cable, and its tip is connected to the main body (not shown) of the video camera. The cable 6 is wound by rotating the cable winding drum 5. An electric brush 7 is attached to the cable winding drum 5. Reference numeral 8 denotes an electric board. A circular copper foil pattern is printed on the electric circuit board 8. When the cable winding drum 5 rotates, the electric brush 7 slides on the circumferential copper foil pattern. The electrical board 8 is connected to the camera head 14 by a cable.
[0016]
Reference numerals 9 and 10 denote brake shoes, which are in pressure contact with the ring gear 4 and the cable winding drum 5 according to commands from a system control means (not shown). In the initial state, the brake shoe 10 is in pressure contact with the cable winding drum 5, but the brake shoe 9 is separated from the ring gear 4. As will be described later, the driving force transmission path of the panning drive mechanism can be switched by appropriately bringing these brake shoes 9 and 10 into a pressure contact state.
[0017]
Next, an operation example of the electric pan head apparatus in this embodiment will be specifically described.
FIG. 3 shows an example of the pan / tilt head operation panel on the video camera body. In this operation panel, reference numerals 30 and 31 denote tilting operation switches. When the switch 30 is pressed, the camera base tilts upward.
[0018]
In the operation panel of FIG. 3, 32 and 33 are panning operation switches. When the switch 32 (or 33) is pressed, the motor 1 is activated and the sun gear 2 rotates clockwise (or counterclockwise). Since the brake shoe 10 is in pressure contact with the cable winding drum 5, the rotating shaft of the planetary gear 3 does not move. When the planetary gear 3 rotates counterclockwise (clockwise), the ring gear 4 and the chassis 15 to which the ring gear 4 is coupled also rotate counterclockwise (clockwise). The electric pan head performs the panning operation in this way. At this time, a driving force transmission path from the motor 1 through the planetary gear 3 to the ring gear 4 and the chassis 15 is formed.
[0019]
Reference numeral 34 denotes a cable winding button. When the cable winding button 34 is pressed, the brake shoe 10 releases the cable winding drum 5 and the brake shoe 9 comes into pressure contact with the ring gear 4. In this state, when power is applied to the motor 1 and the sun gear 2 rotates clockwise, the planetary gear 3 rotates counterclockwise. Since the ring gear 4 is fixed, the cable winding drum 5 to which the rotating shaft of the planetary gear 3 is coupled rotates in the clockwise direction and winds the cable 6. At this time, a driving force transmission path from the motor 1 through the planetary gear 3 to the cable winding drum 5 is formed.
[0020]
When pulling out the cable 6, the cable take-up button 34 is continuously pressed twice, for example. Then, the brake shoe 10 releases the cable winding drum 5 and the brake shoe 9 comes into pressure contact with the ring gear 4. However, no power is applied to the motor 1. Therefore, the cable 6 can be pulled out manually.
[0021]
As described above in detail, the video camera of this embodiment has the following effects. That is, the required torque for driving the pan head and the required torque for winding the cable 6 are usually different. Since the planetary gear mechanism is used in the present embodiment, the output torque when driving the pan head and the output torque when winding the cable 6 can be appropriately output, so the burden on the motor 1 is small.
[0022]
Next, a second embodiment of the electric pan head apparatus according to the present invention will be described.
4 to 6 are diagrams showing a schematic configuration of a second embodiment of the video camera according to the present invention. FIG. 4 shows the use as a pan head, and FIG. 5 shows the cable winding. FIG. 6 is a cross-sectional view of the rotating shaft portion. In addition, the same code | symbol shall be attached | subjected to the member which carries out the substantially same function as the said embodiment.
[0023]
4 to 6, reference numeral 14 denotes a camera head, and reference numeral 13 denotes a tilting mechanism including a motor, a pulley, a gear, and the like. The tilt of the camera head can be changed by the action of the tilting mechanism. These are attached to a chassis 15 formed of stainless steel (SUS).
[0024]
Reference numeral 1 denotes a panning motor, and a pulley is attached to the rotating shaft. A worm gear 20 with a pulley receives power from the panning motor 1 by a timing belt. 21 is a bearing. The panning motor 1, the worm gear 20 with pulley, and the bearing 21 are attached to the chassis 15.
[0025]
Reference numeral 16 denotes a panning worm wheel in which a cable winding drum is integrally formed. As shown in FIG. 6, the worm wheel 16 is held by a bearing 17 provided on the outer periphery of the bearing 21, so that the worm wheel 16 can rotate around the bearing 21. Reference numeral 6 denotes a cable, and its tip is connected to the main body (not shown) of the video camera. Reference numeral 18 denotes a base, and a rotating shaft 23 is vertically provided at the center of the base 18 (FIG. 6). The rotation shaft 23 and the bearing 21 are formed so as to have extremely small friction. Therefore, the bearing 21 can rotate around the rotation shaft 23. 22 is an exterior, and 19 is an electromagnet.
[0026]
Next, the panning operation when used as an electric pan head will be described with reference to FIG.
When used as this electric head, no current flows through the electromagnet 19 and therefore does not function as an electromagnet. Further, although the exterior 22 and the base 18 are separated from each other, the panning worm wheel 16 (cable winding drum portion) is in contact with the base 18. When electric power is applied to the panning motor 1 in this state, power is transmitted from the worm gear 20 with a pulley to the panning worm wheel 16. However, since the panning worm wheel 16 (cable winding drum portion) is in contact with the base 18, the panning worm wheel 16 does not rotate and the panning worm wheel 16 is rotated around the chassis 15 and the chassis 15. The joined members rotate.
[0027]
Next, the operation when winding the cable will be described with reference to FIG.
When cable winding is instructed by a system control means (not shown), an electric current flows through the electromagnet 19, which attracts the chassis 15 and the member coupled to the chassis 15. The panning worm wheel 16 is also attracted. At this time, the exterior 22 and the base 18 are in contact with each other, and the panning worm wheel 16 (cable winding drum portion) is separated from the base 18. When electric power is applied to the panning motor 1 in this state, power is transmitted from the worm gear 20 with a pulley to the panning worm wheel 16. The cable 6 can be wound by rotating the cable winding drum formed integrally with the panning worm wheel 16.
[0028]
【The invention's effect】
As described above, according to the present invention, when the electric pan head has the cable winding means, when the electric pan head and the device connected via the cable are combined, the cable is a cable of the electric pan head. Since it is wound up by a winding part, handling at the time of uniting is easy. Further, since the power of the motor is used for winding the cable, a stable operation can be secured from the beginning to the end of the winding operation. Further, since the cable is wound using the drive motor of the electric head, there is an advantage that power for exclusive use of winding the cable is unnecessary.
[Brief description of the drawings]
FIG. 1 is a main configuration diagram of a camera section side of a video camera in an embodiment of an electric pan head apparatus of the present invention.
FIG. 2 is a diagram showing an example of a planetary gear train according to the electric head system of the present invention.
FIG. 3 is a diagram showing an example of an operation panel according to the electric head device of the present invention.
FIG. 4 is a diagram showing a camera unit side (when used as an electric camera platform) of a video camera in a second embodiment of the electric camera platform of the present invention.
FIG. 5 is a diagram showing a camera unit side (at the time of winding a cable) of a video camera in a second embodiment of the electric pan head apparatus of the present invention.
FIG. 6 is a cross-sectional view showing a configuration example around a rotating shaft portion according to a second embodiment of the electric pan head apparatus of the present invention.
FIG. 7 is a perspective view showing an example of a conventional video camera.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Panning motor 2 Sun gear 3 Planetary gear 4 Ring gear 5 Cable winding drum 6 Cable 7 Electric brush 8 Electric board 9 Ring gear brake shoe 10 Cable winding drum brake shoe 11 Cable winding drum bearing 12 Chassis bearing 13 Tilting mechanism 14 Camera head 15 Chassis 16 Panning worm wheel 17 Bearing 18 Base 19 Electromagnet 20 Worm gear with pulley

Claims (9)

In the electric head device that is connected to a cable for transmitting and receiving a predetermined signal and is driven through a drive mechanism,
Cable take-up means configured to wind up the cable ;
An electric head device characterized in that the cable winding means can be selectively operated by a driving force applied to the driving mechanism . The electric head device according to claim 1 , wherein the cable winding unit is configured to be interlocked with the drive mechanism. A driving force transmission control means for switching the driving force transmission path in the drive mechanism, wherein the driving force of the drive mechanism in claim 1 or 2, characterized in that it has adapted to transmit to said cable winding means Electric pan head device. The drive mechanism includes a planetary gear mechanism, the electric pan head apparatus according to any one of claims 1 to 3, characterized in that to perform the panning operation through the planetary gear mechanism. The drive mechanism includes a worm / worm wheel mechanism, the electric pan head apparatus according to any one of claims 1 to 3, characterized in that to perform the panning operation through the worm / worm wheel mechanism . Electric pan head apparatus according to any one of claims 1 to 5, characterized in that the imaging device is mounted. In the electric head device that is connected to a cable for transmitting and receiving a predetermined signal and is driven through a drive mechanism,
Cable take-up means configured to wind up the cable;
The electric head device is characterized in that the cable winding means is configured to be interlocked with the drive mechanism. In the electric head device that is connected to a cable for transmitting and receiving a predetermined signal and is driven through a drive mechanism,
Cable winding means configured to wind the cable; and
An electric head device characterized by comprising a driving force transmission control means for switching a driving force transmission path in the driving mechanism, wherein the driving force of the driving mechanism can be transmitted to the cable winding means. In the electric head device that is connected to a cable for transmitting and receiving a predetermined signal and is driven through a drive mechanism,
Cable take-up means configured to wind up the cable;
The drive mechanism includes a planetary gear mechanism, and a panning operation is performed via the planetary gear mechanism.

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