JPH10257358A - Motor-driven universal head device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven universal head device, with which the housing property of cable is especially improved and superior appearing configuration is always guaranteed. SOLUTION: A cable 6 for exchanging a prescribed signal is connected and driven through drive mechanisms 1-4. A cable take-up means 5 constituted, so as to take up the cable 6, is provided. The cable take-up means 5 is selectively operated by a drive force applied to the drive mechanisms 1-4. The cable take-up means 5 is constituted, so as to be linked with the drive mechanisms 1-4. Drive force transmission control means 9 and 10 are provided for switching drive force transmission lines at the drive mechanisms 1-4 so as to transmit the drive force of drive mechanism 1-4 to the cable take-up means 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pan head device in which a plurality of components are connected by cables.

[0002]

2. Description of the Related Art Conventionally, a video camera body including a recording unit, a signal processing unit, a display unit, an operation unit, and the like, and a camera head unit including an imaging optical system, an imaging device, and the like are separated.
A video camera in which both are connected by a cable is known. 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.

In this video camera, a camera head 41 is provided.
Can be attached to the video camera body 40 for use. At this time, the cable 42 is exposed to the outside and has a curled shape as shown in the drawing.

[0004]

However, in the conventional video camera, when the camera head 41 is mounted on the video camera body 40 and used, the curled cable 42 is hung and is unsightly and not necessarily a product in appearance. It was difficult to get a good look. Further, the cable 42 has a fixed length, and cannot be easily routed as it is.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electric pan head device which is particularly excellent in cable storage capacity and always ensures a good external appearance.

[0006]

According to the present invention, there is provided an electric pan head device according to the present invention, wherein a cable for transmitting and receiving a predetermined signal is connected, and the pan head device is driven via a driving mechanism. It is provided with cable winding means configured to wind the cable.

Further, in the electric pan head device according to the present invention, the cable winding means can be selectively operated by the driving force applied to the driving mechanism. Further, in the electric pan head device according to the present invention, the cable winding means is configured to be able to interlock with the driving mechanism.

Further, in the electric pan head device according to the present invention, there is provided a driving force transmission control means for switching a driving force transmission path in the driving mechanism, and the driving force of the driving mechanism can be transmitted to the cable winding means. It is characterized by the following.

Further, in the electric pan head device according to the present invention, the driving mechanism includes a planetary gear mechanism, and the panning operation is performed via the planetary gear mechanism. In the electric pan head device according to the present invention,
The drive mechanism includes a worm / worm wheel mechanism, and performs a panning operation via the worm / worm wheel mechanism.

[0010] In the electric pan head device according to the present invention, an imaging device is mounted.

[0011]

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. Further, the apparatus has driving force transmission control means for switching a driving force transmission path in the driving mechanism, and means for selecting whether to use the power generated by the driving mechanism for the camera platform or the cable winding means. The power to be transmitted to the vehicle is transmitted or cut off.

By providing the electric pan head with the cable winding means, when the electric pan head is mounted on a device connected via a cable, the cable is wound around the cable winding section.
In addition, since the power for driving the pan head of the electric pan head is transmitted to the cable winding means, the power can be used to wind the cable. By winding the cable and storing it in the apparatus in this way, the appearance is neat, and the cable is easy to handle without obstruction, so that usability can be improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an electric pan head device according to the present invention will be described below in detail with reference to FIGS. 1 and 2 show a schematic configuration of an embodiment of an electric pan head device according to the present invention. 1 is a main configuration diagram, and FIG. 2 is a diagram of the planetary gear train of FIG. 1 as viewed from above. In the figure, reference numeral 14 denotes a camera head, and 13 denotes a tilting mechanism including a motor, a pulley, a gear, and the like. By the function of the tilting mechanism, the inclination of the camera head 14 supported by the camera base can be changed. These are mounted on the chassis 15. The chassis 15 has a disk shape, and is rotatably supported by bearings 12 near the periphery.

Reference numeral 1 denotes a panning motor, which is installed at the center of the electric pan head device. Reference numeral 2 denotes a sun gear connected to the rotating shaft of the panning motor, 3 denotes three planetary gears, 4 denotes a ring gear, and 5 denotes a cable winding drum to which the rotating shaft 3a of the planetary gear is connected. A panning drive mechanism including a planetary gear train is configured. The cable winding drum 5 is rotatably supported by bearings 11. The ring gear 4 is fixed to the chassis 15. (Note that the planetary gear train in FIG. 1 is shown as a cross-sectional view along the line AA in FIG. 2.)

Reference numeral 6 denotes a cable, the tip of which is connected to the main body (not shown) of the video camera. When the cable winding drum 5 rotates, the cable 6 is wound. The cable winding drum 5 is provided with an electric brush 7. 8 is an electric board. A circumferential copper foil pattern is printed on the electric board 8. When the cable winding drum 5 rotates, the electric brush 7 slides on the circumferential copper foil pattern. The electric board 8 is connected to the camera head 14 by a cable.

Reference numerals 9 and 10 denote brake shoes, respectively, which are brought into pressure contact with the ring gear 4 and the cable winding drum 5 by a command from a system control means (not shown). In the initial state, the brake shoe 10 is pressed against the cable winding drum 5,
Is away 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 the brake shoes 9 and 10 into pressure contact with each other.

Next, an example of the operation of the electric pan head device according to this embodiment will be specifically described. FIG. 3 shows an example of a pan head operation panel on the video camera body. In this operation panel, reference numerals 30 and 31 denote operation switches for tilting. When the switch 30 is pressed, the camera base is tilted upward, and when the switch 31 is pressed, the camera base is tilted downward.

In the operation panel of FIG.
Reference numeral 3 denotes a panning operation switch. Switch 32
Press (or 33) to start the motor 1 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 manner.
, A driving force transmission path to the ring gear 4 and the chassis 15 is formed.

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 is pressed against 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 rotation shaft of the planetary gear 3 is coupled rotates clockwise to wind the cable 6. At this time, a driving force transmission path from the motor 1 via the planetary gear 3 to the cable winding drum 5 is formed.

When pulling out the cable 6, the cable winding button 34 is pressed, for example, twice in succession. Then, the brake shoe 10 releases the cable winding drum 5, and the brake shoe 9 is pressed against the ring gear 4. However, no power is applied to the motor 1. Therefore, the cable 6 can be pulled out manually.

As described in detail above, the video camera of the present embodiment has the following effects. That is, the required torque for driving the camera platform and the required torque for winding the cable 6 are usually different. In the present embodiment, since the planetary gear mechanism is used, the output torque when driving the camera platform and the output torque when winding the cable 6 can be appropriately output, so that the load on the motor 1 is small.

Next, a second example of the electric pan head device according to the present invention will be described.
An embodiment will be described. FIGS. 4 to 6 are schematic diagrams showing a configuration of a video camera according to a second embodiment of the present invention. FIG. 4 shows the camera when used as a camera platform, and FIG. 5 shows the camera when the cable is wound. FIG. 6 is a cross-sectional view of the rotating shaft. Note that members having substantially the same function as those of the above embodiment are denoted by the same reference numerals.

First, in FIGS. 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 function of the tilting mechanism. These are mounted on a chassis 15 made of stainless steel (SUS).

Reference numeral 1 denotes a panning motor, and a rotary shaft has a pulley. Reference numeral 20 denotes a worm gear with a pulley, which receives power from the panning motor 1 by a timing belt. 21 is a bearing. The motor 1 for panning, the worm gear 20 with a pulley, and the bearing 21
It is attached to the chassis 15.

Reference numeral 16 denotes a panning worm wheel integrally formed with a cable winding drum. As shown in FIG. 6, the worm wheel 16 is held by the bearing 17 provided on the outer periphery of the bearing 21, so that it can rotate around the bearing 21. Reference numeral 6 denotes a cable, the tip of which is connected to a main body (not shown) of the video camera. Reference numeral 18 denotes a base.
A rotating shaft 23 is provided vertically at the center of FIG. The friction between the rotating shaft 23 and the bearing 21 is made so as to be extremely small, so that the bearing 21 can rotate around the rotating shaft 23. 22 is an exterior, and 19 is an electromagnet.

Next, the operation of panning when used as a motor-driven pan head will be described with reference to FIG. When used as an electric pan head, no current flows through the electromagnet 19, so that it does not function as an electromagnet. The outer casing 22 and the base 18 are apart from each other, but the panning worm wheel 16 (cable winding drum section) 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 the pulley to the worm wheel 16 for panning. 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 periphery of the panning worm wheel 16 is transferred to the chassis 15 and the chassis 15. The connected members rotate.

Next, the operation of winding the cable will be described with reference to FIG. When the cable winding is instructed by the system control means (not shown), a current flows through the electromagnet 19, which attracts the chassis 15 and the members connected to the chassis 15. The panning worm wheel 16 is also attracted. At this time, the exterior 22 and the base 18 come into contact with each other, and
6 (drum for winding the cable) is apart 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 worm wheel 16 for panning. The cable 6 can be wound by rotating a cable winding drum formed integrally with the panning worm wheel 16.

[0028]

As described above, according to the present invention, when the motor-driven camera platform is provided with the cable winding means, when the motor-driven camera platform and the device connected via the cable are combined, the cable is connected. Since it is wound around the cable winding section of the electric pan head, it can be easily handled at the time of merging. Further, since the power of the motor is used for winding the cable, a stable operation can be ensured from the beginning to the end of the winding operation. Furthermore, since the cable is wound using the motor for driving the electric pan head,
It has the advantage that power for cable winding is not required.

[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 device according to the present invention.

FIG. 2 is a diagram showing an example of a planetary gear train according to the electric pan head device of the present invention.

FIG. 3 is a diagram showing an example of an operation panel according to the electric pan head device of the present invention.

FIG. 4 shows a camera section side of a video camera according to a second embodiment of the electric pan head device of the present invention (when used as an electric pan head).
FIG.

FIG. 5 is a view showing a camera unit side (when winding a cable) of a video camera in a second embodiment of the electric pan head device of the present invention.

FIG. 6 is a cross-sectional view illustrating a configuration example around a rotation shaft according to a second embodiment of the electric pan head device 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 Reference Signs List 12 Bearing for chassis 13 Tilt mechanism 14 Camera head 15 Chassis 16 Worm wheel for panning 17 Bearing 18 Base 19 Electromagnet 20 Worm gear with pulley

Claims (7)

[Claims] 1. A motor-driven pan head device to which a cable for transmitting and receiving a predetermined signal is connected and which is driven via a driving mechanism, a cable winding means configured to wind the cable. An electric pan head device comprising: 2. The electric pan head according to claim 1, wherein said cable winding means can be selectively operated by a driving force applied to said driving mechanism. apparatus. 3. The cable winding device according to claim 1, wherein the cable winding device is configured to be interlocked with the driving mechanism.
Or the electric pan head device according to 2. 4. 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. The electric pan head device according to any one of claims 1 to 3. 5. The electric pan head device according to claim 1, wherein the drive mechanism includes a planetary gear mechanism, and performs a panning operation via the planetary gear mechanism. 6. The electric motor according to claim 1, wherein the drive mechanism includes a worm / worm wheel mechanism, and performs a panning operation via the worm / worm wheel mechanism. Head device. 7. The electric pan head device according to claim 1, further comprising an image pickup device.