JPS5939176A - Electronic camera device - Google Patents

Abstract

PURPOSE:To attain ease of maintenance control, by pressing a pinch roll on a capstan as required only, in a magnetic recording still picture camera. CONSTITUTION:A tip of a lever 8 pressing and releasing a magnetic tape 4 onto the capstan 101 with turning is arranged so as to be engaged with a stopper section 20 of an L-shaped lever type power switch 19 and the contact is released when the switch is turned off. Only when the power supply of the camera device is turned on for the preparation of pickup, the pinch roll 6 presses the magnetic tape 4 onto the capstan 101 through the constitution above. Since the pressing onto the magnetic tape 4 is released with the switch 19 turned off in case other than the pickup, a failure such as deformation of the pinch roll 6 and degradation of the surface of magnetic tape does not take place.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to an electronic camera device, and more particularly to a magnetic tape recording type electronic camera device.

BACKGROUND OF THE INVENTION With the development of magnetic recording devices, magnetic recording still image cameras have been devised to replace conventional chemical photography.

This magnetic recording type still image camera has a configuration as shown in FIG. That is, the two-dimensional image signal obtained from the television camera 1 is converted into one by the frame extracting circuit 2.
A frame is extracted and recorded as a serial signal on a magnetic tape 4 running at a constant speed via a recording head 3. .

To run the magnetic tape 4 at a constant speed, a capstan
Glue metal to the tip of the shaft of motor 5 (capstan 1
01), the capstan is rotated at a circumferential speed equal to the running speed of the magnetic tape, a pinch row 76 made of rubber that is easily deformed is pressed against the capstan, and the magnetic tape is sandwiched between these two rollers. The magnetic tape is fed out by the frictional force.

When using this type of machine to change the sire of a 1st Dave cow, it is necessary to release the pressure applied to the pinch roller 6 and provide a space between the pinch roller 6 and the capstan 101. , other parts must be crimped at all times. This is because it is impossible to predict when the shutter will be pressed and the tape will be started.

Therefore, if you forget to take out the tape and leave the pinch roller 6 pressed for a long period of time (σ), the pinch roller 6 may be plastically deformed and problems such as deterioration of nl may occur. Was.

OBJECTS OF THE INVENTION In order to improve the above-mentioned conventional drawbacks, an object of the present invention is to provide an electronic camera device in which the pinch roller is pressed against the capstan only when necessary.

In order to achieve the above object, the present invention is characterized in that the frictional force of the C1 drive device acts on the recording medium in conjunction with the preliminary device handling operation for photographing.

Examples of the invention Hereinafter, the present invention will be explained in detail using Examples.

FIG. 2 shows a first embodiment of the present invention, in which the television camera 1, frame extracting circuit 2, and recording head 3 are omitted (the same applies to the following embodiments).

The magnetic tape cow is sandwiched between the capstan 101 and the pinch roller 6, and is moved by the frictional force between the capstan 101 and the pinch roller 6.

The rotating shaft of the pinch roller 6 is provided in the middle of a lever 8 that operates with a fixed fulcrum 7 as the fulcrum, and by delicate rotation of the lever 8, the magnetic tape cow is pulled into the capstan 1'01.
It can be crimped and released. The pinch roller 6 is normally set to be compressed by the action of a compression spring 9.

The tip of the lever 8 is arranged to engage with the stopper part 20 of the L-shaped lever power switch 19, and operates so that the contact is released when the switch is turned off, as indicated by the solid line in the figure.

With such a configuration, the Vincirolla (crimping) is applied only when the power of the camera device is turned on in preparation for photographing, and the pressure is released when the switch is turned off except when photographing, so the above-mentioned trouble does not occur.

The figure δ shows a second embodiment of the present invention σ] in which the pressing operation of the pinch roller is linked with the opening/closing movement 11J of the lens-cap.

In front of the photographic lens 11 is a lens cap and knob 10 (a part of the camera body).
It is possible to rotate around a fulcrum 12. This cap 10 has a Leno-t-13 on its ear, and the Leno-t-13 is used to press the pinch roller 0 as in the embodiment shown in FIG. arranged to engage.

As shown in Fig. 3, when the lens cap is in the closed position and the lever 13 is in the closed position, the lever 13 is in the closed position, so the pinch roller 6 does not press the magnetic tape. When the cap 10 is opened, the pinch roller 6 moves away from the lever 8 and presses the magnetic tape.

Since the lens cap must be opened before shooting, by linking the opening/closing movement of the lens gap and the crimping operation of the pinch ruler as described above, the pinch roller can be crimped automatically only when shooting. Ru.

Furthermore, the present invention can be carried out by not only rotating the lens cap in conjunction with rotation as described above, but also by attaching and detaching the lens cap, or by linearly sliding the lens cap.

Furthermore, the opening/closing movement of the lens cap may be linked to the opening/closing of the camera's power switch.

FIG. 4 shows a third embodiment of the present invention that utilizes electromagnetic force.

The lever 8 for pressing the pinch roller 6 is normally pulled by a tension spring 14 in such a direction that it does not press the magnetic tape 4. On the other hand, the tip of the lever 8 is made of an iron piece with high magnetic permeability, and when a current flows through the opposing m-magnet 15, the lever 8 is pulled with an attractive force greater than the force of the spring 14, and the pinch roller 6 is pulled together with the tape. Crimp it to Φ.

The current of this 'K6H stone 15 is controlled by a flip-flop circuit 16, and when the shutter button for photographing is pressed, the flip-flop 16 is set by a signal 17, and the magnetic tape 4 [signal indicating that recording has ended], is reset by 8.

As a result, the pinch roller 6 can perform the pressing operation only when the tape is driven during photographing.

Note that the flip-flip set signal 17 and the reset signal 18 can also be linked to the closing movement of the lens cap.

Effects of the Invention As with construction, according to the present invention, the pinch roller can be attached to the capsuta only when necessary for photographing, and the tape can be run, reducing the deformation of the pinch roller and the cicada tape. Since it can prevent surface blood from deteriorating, maintenance is easy and the treatment is effective.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, and FIG. 3 show the configuration of a conventional electronic camera device that uses magnetic tape as a recording medium. FIG. 4 shows the first embodiment of the present invention. Second. It is a figure showing a 3rd example. 4=Magnetic tape, 5=Gearbuskin motor, 6: Pinch roller, 1941-ε source switch bar, lO:
Lens cap, 15:%ta stone, ]o1: cab stan. Patent applicant Hitachi, Ltd. Representative Patent attorney Isomura 31iC
Shun'1 1st 2nd Figure 3rd Cow Figure

Claims (1)

[Claims] α) A sweeping device that converts optical information into an electrical signal.
In a camera device equipped with a recording medium for recording an output signal of the imaging device, and a driving device for driving the recording medium using a frictional force, the frictional force of the driving device is replaced by an elastic force,
A mechanism that generates and eliminates electromagnetic force or a combination thereof, and the t4! An electronic camera device characterized by having a mechanism for interlocking a device S and a device W that is artificially operated for preparation for offering. (2) Claim 1, wherein the manually operated device is a power switch of the camera body.
The electronic camera device described in Section 1. (3) The electronic camera device according to claim 1, wherein the manually operated device is a lens cap attaching/detaching device. (4) The electronic camera device according to claim 1, wherein the manually operated device is a shutter button.