JPS6181093A - Electronic still camera - Google Patents

Abstract

PURPOSE:To reduce the unnecessary pressure contacting time and make a recording completion detecting device unnecessary by pressure-sticking a recording head to a disk in interlocking with shutter operation, and separating the recording head from the disk interlocking with shifting operation of the recording head. CONSTITUTION:When a release button is depressed, a current is applied to a solenoid by electric conduction of a switch 27, and the recording head 6 is pressure-stuck to the magnetic disk 5 by action of an L-shaped fitting 21, a head feeding fitting 13 and a spring 16. When recording of a picture is completed, a current is applied for a time corresponding to one rotation to a head feeding motor 18, and the recording head 6 is shifted. When one rotation of the motor 18 is completed, a switch 29 is set to the state of applying current, and a current to the solenoid is cut off, and the head 6 is separated from the magnetic disk 5 by the action of a spring 25 and an L-shaped fitting 21.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a recording head for recording electrical signals from an imaging device onto a disk, and a head transport means for transporting the recording head after recording is completed. Regarding electronic still cameras.

2. Description of the Related Art Conventionally, in the above-mentioned electronic still camera, a recording head is pressed against a magnetic disk in conjunction with the press of a shirt release button.
(Refer to Publication No.-72762).

Problems to be Solved by the Invention According to the above conventional structure, the head is brought into contact with the disk before recording is performed by the recording head, so that recording is performed correctly and the head is always brought into contact with the disk. Although it is possible to shorten the time that the head unnecessarily contacts the disk (compared to a configuration in which the head is in contact with the disk), a means for detecting the end of recording by the recording head is required in order to separate the head from the disk. there were.

The present invention relates to an improvement on the above-mentioned prior art, and an object of the present invention is to make use of the movement of the head by the disk transfer means provided in the electronic still camera to avoid unnecessary contact of the head with the disk. It's about making it shorter.

Hands to solve problems.

In order to achieve the above-mentioned object, the present invention provides a head detachment system that presses the recording head against the disk in conjunction with a shank release operation, and separates the recording head from the disk in conjunction with the movement of the recording head by a head transfer means. It is characterized by having a means.

By the means described above, the head is pressed against the disk until the shirt release operation is performed, recording on the disk is completed, and the head is transferred to the next track, so that recording is performed correctly. Since they are spaced apart, unnecessary pressure bonding time to the disk can be extremely reduced.

Example The present invention will be described in detail below based on the drawings.

. FIG. 4 shows an electronic still camera that takes pictures using a still video camera (2) that can be inserted and removed from the main body (1) of the camera. Inside the camera body (1),
CC that converts images from the photographic lens (3) into electrical signals
An imaging device (4) consisting of a group of imaging elements such as D, and an output from the imaging device (4).
A recording head (6) for recording on a magnetic disk (5) inside the recording head is provided.

Then, one screen is recorded by a release operation by pressing the release button (7).

As shown in FIG. 5, a magnetic disk (5) made of a thin (approximately 40 μm) flexible sheet material is rotatably housed inside the stel video floppy disk (2).

The magnetic disk (5) is fixed to a center core (8) having a hole (8a) that engages with a disk rotating shaft (not shown) on the side of the camera body (1), and the back side of the drawing is a magnetic surface. . A slider (9) is provided on the floppy disk (2) so as to close the hole (p) and protect the magnetic disk (5) when the floppy disk (2) is taken out from the camera body (1). When inserted into the main body (1), it moves in the direction A in the figure to open the hole (p) and allow the recording head (6) to enter. In the figure (10) is a counter dial. Also in the figure (
lla) and (llb) are positioning holes;
As shown in Figures 1 and 2, the positioning pins (12a) and (12b) fit and engage within the camera body (1) to hold the floppy disk (2) in its proper position. It has become.

As shown in Figures 1 and 2, in the camera body (1), at a position corresponding to the hole (p) of the floppy disk (2).
A recording head (6) is provided at.

The recording head (6) is fixed on a head holding plate (6a) attached to one bent portion (13a) of the head feeder (13). In addition to the head feed fitting (13),
A bent part (: f3b) having a hole that loosely engages with the head feed shaft (14) supported by the body, and a head feed shaft (14).
It has a bent part (13c) having a female threaded hole that engages with the male threaded part (14a) of 4). One bent part (1
A spring (16) is installed between the head feeding bracket (3c) and the pin (15) fixed to the body.
13) is urged in the direction B in the figure, and in the direction C in the figure around the head feed shaft (14), respectively. The head feed shaft (14) is interlocked with a head feed motor (18) such as a stem motor via a mechanical mechanism (17) consisting of a plurality of gears.
With one rotation of the recording head (6), the magnetic disk (5
) is configured to move one track toward the inner circumferential direction. That is, the track pinch of the magnetic disk (5) is 0.1 m, and the reduction ratio of the reduction mechanism (17) is 1.
/n, the pitch of the threaded part (14a) is n/10m
By setting, the amount of movement of the recording head (6) per one rotation of the head feed motor (18) is l/nx
n/10m=0.1tx. In addition, a pin (13e) is fixed on the head feeder (13), and when this pin (13e) hits the plywood (19), the relative position between the magnetic disk (5) and the recording head (6) is determined. It will be done. Furthermore, in order to prevent the magnetic disk (5) that is crimped by the recording head (6) from flexing and escaping, a surface of the magnetic disk (5) opposite to the recording head (6) is
A pad (20) for holding down the magnetic disk (5) is provided.

On the other hand, a part of the head feeder (13) has an inclined portion (13).
d) is formed, and its contact with the inclined portion (13d) causes the head feeder (13) to move against the spring (16).
) is rotated downward in FIG.
An L-shaped fitting (21) with a) is rotatably attached around a shaft (23) fixed to a stand vi (19). A spring (25) is installed between one end of the L-shaped fitting (21) and a bottle (24) fixed to the body, and the pin (21a) of the L-shaped fitting (21) is connected to the Rad feed fitting. (13) is urged to abut against the inclined portion (13d). Also, the solenoid (26
) is provided, and when the solenoid (26) is energized, the L-shaped fitting (21) is attracted and rotated against the spring (25), and the pin (21a) is attached to the head feed fitting (1).
The recording head (6) is configured to be pressed against the magnetic disk (5) by releasing the state of contacting the inclined portion (13d) of (3). In addition, (22) in FIG. 1 is a bottle for regulating the rotation of the L-shaped metal fitting (21).

As shown in FIG. 1, the first
A second signal output that becomes energized every - rotation of the motor (18) when it comes into contact with the switch (27) and the protrusion (28a) of the cam (28) attached to the head feed motor (18). A second switch (29), which is an example of means, is provided respectively. As shown in FIG.
is connected to the input terminals (a) and (b) of the control means (
The output terminal (c) of the solenoid (26) is connected to the power circuit of the solenoid (26). The control means (30) is also inputted to the output of a mode switching means (34) that switches between single-frame shooting and continuous shooting in response to manual operation. In a state where the mode switching means (34) is set to the single-frame shooting mode, the control means (30) is connected to both input terminals (a).
, When (b) is at the (L) level, the output terminal (c) remains at (L), and once the first switch (27) is connected and the input terminal (a) becomes at the (11) level, the output terminal (c) remains at the (11) level. The output terminal (c) is configured to maintain the (H) level until the input terminal (b) reaches the (H) level when the two switches (29) are connected.

In other words, when shooting one frame at a time, pressing the release button (7) presses the recording head W (6) onto the magnetic disk (5) and completes recording on the magnetic disk (5). When the recording head (6) moves, the recording head (
6) is separated from the magnetic case (5). and,
Even if the +)- button (7) is held down, the 1
When the photographing of a frame is completed, the recording head (6) is separated from the magnetic disk (5), and the next photographing operation is not performed unless the control means (30) is reset by returning the release button (7).

On the other hand, when the mode switching means (34) is set to the continuous shooting mode, the control means (30) selects the signal from the input terminal (a) earlier than the signal from the input terminal (b). However, as long as the input terminal (a) is at the (II) level,
The output (c) is maintained at the U) level.

Therefore, as long as the release button (7) is kept pressed, the record button (6) continues to be pressed against the magnetic disk (5), and is ready for continuous shooting.

Next, in the electronic still camera with the above configuration, 1
The operation of the recording throat (6) accompanying the frame-by-frame photographing operation will be explained using FIGS. 1 to 3.

Before the release button (7) is pressed, the solenoid (26
) is not energized, the L-shaped fitting (21) is rotated by the spring (25) to the A device that hits the pin (22), and the pin (21a) is connected to the head feed fitting (
13), the recording head (6) is in a position separated from the magnetic disk (5) as shown by the imaginary line in FIG.

When the release button (7) is pressed, the release switch (not shown) and the first switch (27) are energized. When the release switch is energized, a disk drive motor (not shown) is started and the magnetic disk (5) is activated.
As the mirror (not shown) begins to rotate, a mirror (not shown) is raised and a gloss (not shown) is released for a predetermined period of time, and the first imager (4) is exposed to light. 1st switch (27)
The solenoid (26) is energized and attracts the bent part (21b) of the L-shaped fitting (21), so that the pin (21a) of the L-shaped fitting (21) moves the solenoid (26) to the bent part (21b) of the L-shaped fitting (21). ) is released from contact with the inclined portion (13d), the head feed fitting (13) is rotated upward in the second position around the head feed shaft (14) by the biasing force of the spring (16). , the recording throat (6) is pressed against the magnetic disk (5).

In the imaging device (4), the image captured by the photographing lens (3) is converted into an electrical signal and scanned, and the output signal from the imaging device (4) is sent to the recording head (6).
Recording is performed on the magnetic disk (5) which is already in a stable rotation state.

When one screen of recording is completed, the head feed motor (18)
The recording head (6) is energized for a time equivalent to one revolution, and the recording head (6) is moved 0.1 m toward the inner peripheral surface of the magnetic disk (5).
Move m. When the head feed motor (18) completes one rotation, the second switch (29) becomes energized due to the contact of the protrusion (28a) of the cam (28), and the solenoid (26) is no longer energized. The L-shaped fitting (21) is rotated by the biasing force of the spring (25), so that the recording head (6) is separated from the magnetic disk (5) again.

The specific configuration for pressing and separating the recording head (6) from the magnetic disk (5) can be modified in various ways, such as using a mechanical configuration instead of an electrical configuration. It is called X).

Next, an example of the mechanically configured head attachment/detachment means (χ) will be explained.

As shown in FIG. 6, the L-shaped fitting (21), which is an example of an interlocking member, has a pin (21a) that abuts on the inclined portion (13d) of the head feed fitting (13).
It has a bent part (21c) at a position opposite to 7),
When the release button (7) is pressed, the spring (25
) to press the recording head (6) against the magnetic disk (5) as in the previous embodiment. Then, the pin (2
1d) is locked by climbing over the inclined portion (31a) of the locking member (31), and the head crimped state is maintained. The locking member (31) is attached to be rotatable around a shaft (32) fixed to the body and swingable in the vertical direction in the figure, and rests on a spring (33) to abut against a pin (34). Even the device A is biased clockwise in the figure.

When recording on the magnetic disk (5) is completed, the recording head (6) is moved by the rotation of the head feed motor (18), and the protrusion (28b) of the cam (28) is attached to one end of the locking member (31). (31b) and the other end (3ic)
By flipping up the pin (21d), the lock is released and the pin (21d) returns to its initial state. Furthermore, first-
Components having the same configuration as the embodiment described above are not shown in the drawings.

Furthermore, as for the timing of pressing the recording head (6) onto the magnetic disk (5), instead of the method in which it is linked to the pressing and scratching action of the release button (7) as in the two embodiments described above, for example, - Various changes are possible, such as linking it to mirror up in the case of a focal-brain type shutter, or linking it to the start of the first film in the case of a focal-brain type shutter. It is fine as long as it has been done. However, considering the time required for the magnetic disk (5) to reach a stable rotating state, it is preferable to press the recording head (6) onto the magnetic disk (5) a certain period of time before the start of recording. .

In addition, in conjunction with the pressing/separating operation of the recording head (6),
It can be modified as appropriate, such as by pressing the band (20) against the magnetic disk (5) and separating it.

Invention As described above, the electronic still camera according to the present invention has the following functions in relation to the release operation using the release button.
Since the recording head is pressed against the magnetic disk only when recording, and the recording head is moved apart when the head is moved, there is a risk of wear of the recording head or adhesion of magnetic material to the surface of the recording head. This also reduces damage to magnetic disks.

Therefore, it has become possible to provide an electronic still camera that always records in good condition and has excellent durability.

[Brief explanation of drawings]

1 to 5 show an embodiment of an electronic still camera according to the present invention, in which FIG. 1 is a perspective view of main parts, FIG. 2 is a view taken along the line nn in FIG. 1, and FIG. FIG. 4 is a partially cutaway overall perspective view of the electronic still camera, and FIG. 5 is a plan view of the still video camera. FIG. 6 is a perspective view corresponding to FIG. 1 showing another embodiment of the present invention. (5)・・・Magnetism, disk, (6)・・・・・・
. . . Recording head, (13) to (18) . . . Head transport means, (21) to (26) . . . Head detachment means.

Claims (4)

[Claims] (1) In an electronic still camera that has a recording head that records video signals on a magnetic disk and a head transport means that transports this recording head after recording is completed, the recording head is pressed against the magnetic disk in conjunction with shutter release operation. An electronic still camera further comprising a head separating means for separating the recording head from the magnetic disk in conjunction with the movement of the recording head by the head transporting means. (2) The head detachment means includes a first signal output means that outputs a first signal when the shutter release button is pressed, and a second signal output means that outputs a second signal when the head transfer means is operated.
and a control means that presses the recording head against the magnetic disk when the first signal is input, and separates the recording head from the magnetic disk when the second signal is input. An electronic still camera according to claim 1. (3) The control means has a mode switching means for switching between a single-frame shooting mode and a continuous shooting mode, and when the continuous shooting mode is selected, the first signal is given priority over the second signal. The electronic still camera according to claim 2, characterized in that the pressing and separating of the recording head is controlled. (4) The head detachment means includes an interlocking member that moves the recording head to a position where the recording head is pressed against the magnetic disk in conjunction with a shutter release operation, and an interlocking member that engages the interlocking member at a position where the recording head is pressed against the magnetic disk. Claim 1 characterized in that it has a locking member that locks the recording head and that locks the locking member that is released in conjunction with the movement of the recording head.
Electronic still camera as described in section.