JP2624150B2 - Cassette mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for mounting a magnetic sheet cassette.

[0002]

2. Description of the Related Art An imaging system (electronic camera) for electronically photographing a subject using a solid-state image sensor or the like on a magnetic sheet as a recording medium is known. The magnetic sheets used in this system are usually used in the form of a magnetic sheet cassette. The magnetic sheet cassette accommodates a rotatable magnetic sheet therein, and is used by being mounted on a magnetic recording device incorporated in an electronic camera or a reproducing device integrated with or separate from the magnetic recording device.

A conventional magnetic sheet cassette is provided with an opening for performing magnetic recording / reproducing, and a shutter member for closing this opening during non-recording / reproducing and opening the opening during recording / reproducing. I have.

[0004]

Problems to be Solved by the Invention Conventional apparatuses (for example, Japanese Utility Model Laid-Open No. 51-88201, Japanese Utility Model Laid-Open No. 51-85710)
Thus, since the magnetic sheet cassette has no shutter member, the magnetic reproducing head can be easily brought into contact with the magnetic sheet without opening and closing the shutter. However, when the magnetic sheet cassette having the shutter member is mounted on the cassette holder or taken out of the cassette holder, the opening and closing mechanism of the shutter member tends to be complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cassette mounting device which facilitates opening and closing of a shutter member without providing a special member in the cassette mounting device.

[0006]

Means for Solving the Problems To solve the above problems, the cassette mounting device of the present invention comprises a magnetic sheet (8),
A first cover member (4) having an opening window (4c) and positioning holes (4a, 4b) and covering the recording / reproducing surface of the magnetic sheet, and a second cover member (4) covering the other surface of the magnetic sheet When,
A groove (4d) formed on at least one peripheral edge of the first and second cover members; an open position having a hole (6a) for opening the open window; and a closed position for closing the open window. In a cassette mounting device capable of inserting and removing a magnetic cassette (3) having a shutter member (6) movable between the positioning holes (4a, 4a).
Base (1) with positioning pins (201, 202) corresponding to b)
And a cassette holder (12) rotatably provided to be open and closed with respect to the base (1) and capable of inserting and removing a magnetic cassette in the open state, and provided on a path of the groove (4d). When the magnetic cassette (3) is inserted into the cassette holder (12), the shutter member (6) is moved in the direction opposite to the insertion direction with respect to the magnetic cassette to open the shutter from the closed position to the open position. The means (14) is biased in response to the insertion of the magnetic cassette (3) into the cassette holder (12), and is locked when the cassette holder (12) is in the closed state and is opened when the cassette holder is opened at a predetermined angle. The cassette release means (20) for releasing the lock and partially discharging the magnetic cassette (3) from the cassette holder (12), and the hole (6a) during the insertion of the magnetic cassette (3) into the cassette holder (12). ) And release the magnetic cassette (3) from the cassette holder (12). Then, the shutter member (6) is moved in the insertion direction with respect to the magnetic cassette to move from the open position to the closed position, and when the magnetic cassette (3) is removed from the cassette holder (12), the hole (6a) is taken out. Shutter closing means (15) retracted from the shutter.

[0007]

According to the present invention, when the magnetic cassette is inserted into the cassette holder and when the magnetic cassette is removed from the cassette holder, the shutter of the magnetic cassette can be completely opened and closed without increasing the number of parts.

[0008]

FIG. 1 is an external view of an electronic still camera according to an embodiment of the present invention. The main body 1 has a cassette mounting device 2 which is opened by operating the lid release button 300. FIG. 2 shows the cassette mounting lid 2 in FIG. 1 opened. The cassette 3 is half inserted.

FIGS. 3 and 4 are cross-sectional views of the essential parts of FIG. 2 as viewed from below. The cassette 3 inserted into the cassette lid 2 in FIG. 3 is pushed down to the two-dot chain line, where it is temporarily fixed by means described later. The lid 2 is further closed from the state shown in FIG. 4 and fixed at the position indicated by the two-dot chain line, and the state shown in FIG. FIG.
FIG. 3 is a front view of a magnetic cassette with a shutter to which an urging force is not applied in an example of a cassette used in the apparatus of the present invention. The cassette housing 4 is provided with positioning holes 4a and 4b, the center hub 5 is rotatably housed, and the shutter 6 is slidably mounted on the cassette housing 4 in a lateral direction. An elastic pressing portion 5a for eliminating eccentricity with the spindle shaft is integrally formed with the center hub 5, and a PG pin 7 for detecting a phase during rotation is integrally formed.

FIG. 6 is a front view of the magnetic cassette with shutter shown in FIG. 5 with the shutter 6 opened to the right.
From the window 4C of the cassette housing 4, the magnetic sheet 8 integrally formed with the center hub 5 can be seen. For magnetic recording and reproduction, this window 4C
Is done through FIG. 7 is a left side view of the magnetic cassette with a shutter, in which a groove 4d is provided at an upper portion, and the shutter 6 is opened and closed using the groove 4d.

8 and 9 show that the shutter 6 is closed,
It is a top view of a magnetic cassette of an opened state. When the shutter 6 is opened, the groove of 4d is used, and when the shutter 6 is closed, the shutter 6 is closed by a member that enters the groove 4d through the hole 6a of the shutter. FIG. 10 is a bottom view of the magnetic cassette.
The concave portion 4e provided on the bottom surface of the housing 4 is used to lock a temporary stop when the cassette is mounted and removed.

FIG. 11 is an enlarged sectional view as viewed from E in FIG. The center hub 5 is rotatably housed in the cassette housing 4 with a sufficient margin. The PG pin 7 is in contact with the magnetic body 9 as shown in the figure, so that magnetic flux is easily collected when the magnetic body 9 is attracted by the magnet integrated with the spindle shaft. FIG.
FIG. 13 is a sectional view of the cassette lid 2 of the electronic still camera shown in FIGS. 1 and 2 as viewed from the front, and FIG.
2 is a cross section at a deeper part.

FIGS. 14 and 22 are cross-sectional views of the main parts inside the cassette holder 12, and the same reference numerals are given to the same members as those in FIGS. FIG. 14 shows a state where the cassette housing 4 is being inserted into the cassette lid 2 and the shutter closing member 1
5A shows a state in which the shutter 6 has been partially opened by the right end of the shutter opening member 14 abutting on the left end of the shutter 6 when the shutter 5a has fallen into the hole 6a of the shutter 6. FIG. 22 shows a state in which the cassette housing 4 is taken out of the cassette lid 2, and the shutter closing member 1 is moved by moving the cassette housing 4 to the right.
5 moves to the right against the spring 18 and the fixing pin 1
7, the shutter closing member 15 rotates counterclockwise about the fixing pin 16 so that the protrusion 1 moves.
5a indicates a state immediately before the shutter 5a deviates from the shutter hole 6a.

FIGS. 12 and 1 show the configuration of an embodiment of the present invention.
3 and FIGS. 15 to 21 which are cross-sectional views thereof. 15 is a sectional view taken along the line FF of FIG. 12 when the cassette cover 2 is fully opened, FIG. 16 is a sectional view taken along the line GG of FIG. 12, and FIG. FIG. 17 shows a state in which the cassette lid 2 is closed, and FIGS. FIG. 18 is a partial sectional view taken along the line HH in FIG. 12, and shows a state in which the cassette lid 2 is closed as in FIG.

FIG. 19 is a sectional view taken along the line KK in FIG. 12, showing the cassette lid 2 in a closed state and an opened state. 20 and 21 are sectional views taken along the line MM in FIG. 12, and FIG. 20 shows a state where the cassette lid 2 is closed.
FIG. 21 shows a state where the cassette lid 2 is opened. In FIG. 12, the cassette lid 2 is rotatably supported about a shaft 10 fixed to the main body 1 and is urged in the opening direction by a spring 11, and is operated by operating a lock release button 300 shown in FIG. Open on your own. The cassette lid 2 has a stable substrate 101 on which a stabilizing plate or the like that plays an important role in magnetic recording / reproducing is attached. Through three slightly larger holes 101c, d, and e, three guide pins 102, 103, and 104 are used. It is movably mounted vertically.

In FIG. 19, the stabilizing plates 105 and 106 have a function of sandwiching the magnetic sheet 8 from above and below when the cassette 3 is set, and stabilizing the contact between the recording (or) reproducing head 107 and the magnetic sheet 8. , The upper stabilizing plate 105 is pillar 1
08, the lower stabilizing plate 10
6 is fixed to the main body. The distance between the upper and lower stabilizing plates 105 and 106 when the cassette lid 2 is closed is determined by the steps of the pins 109 and 110 fixed to the main body and the lower stabilizing plate 10.
6 is determined by the pins 111 and 112 (FIG. 13) provided at the end of the sixth. The position is determined by the steps of the pins 109 and 110, the hole 101a and the slot 101b of the stable substrate 101,
The stable substrate is pressed and fixed to the steps of the columns 109 and 110 by the spring 113 attached to the cassette lid 2 at all times. When the cassette lid 2 is open as indicated by the two-dot chain line, the stabilizing plate 105 is retracted from the cassette 3 and the insertion and ejection of the cassette 3 becomes easy.

As shown in FIGS. 12 and 13, the rotational phase detecting coil 114 is also fixed to the stable substrate 101, and when the cassette 3 is set, a fixed distance from the PG pin 7 is maintained. 12 and 13, the cassette holder 1
2 is a shaft 13 located inside the cassette lid 2 and fixed to the main body,
It can rotate around 130 and is configured as follows.

When the cassette 3 is inserted, the shutter opening member 14 of the cassette enters the groove 4d of the cassette housing, and comes into contact with the shutter 6 as the cassette 3 is inserted.
The shutter 6 is opened. The shutter closing member 15 is positioned by pins 16 and 17 fixed to the cassette holder 12, and one end of each of the springs 1 is fixed to the holder 12.
8 is urged to the left by the
A moment is applied to rotate the entire body 6 clockwise. The protruding portion 15a is on the path of the cassette groove 4d like the shutter opening member 14, and the shutter opening member 14 is in a contact position with the shutter 6 and in a position to enter the shutter hole 6a.

The cassette discharging member 20 is a cassette holder 1.
2 is rotated about a shaft 21 fixed to the cassette holder 2, and one end is urged counterclockwise by a spring 22 fixed to the cassette holder 12, and the rotation in the counterclockwise direction is restricted by a pin 23 fixed to the cassette holder 12. Have been. When the cassette 3 is pushed in, the distal end portion 20 a of the cassette discharge member 20 rotates clockwise, and the shaft 25 is fixed to the cassette holder 12, and the locking member 24 is urged by a spring 26.
Is locked by. (See FIG. 15) When the cassette holder 12 is further opened from the state of FIG. 15, the bent portion 24a of the locking member 24 is engaged with a part 250 of the main body, and the shaft 25 is released.
Rotate counterclockwise around the center to release the lock at the tip.
At 3, the discharge member 20 rotates counterclockwise to discharge the cassette 3.

The cassette temporary fixing member 27 is given a moment in the clockwise direction by a spring 29 about a shaft 28 fixed to the cassette holder 12 as shown in FIG. 12, and the leading end 27a enters the recess 4e of the cassette 3. Position, and temporarily stops the cassette 3 during insertion and ejection. As shown in FIG. 12, one end of each of the cassette holders 30 and 31 is fixed to the cassette holder 12 by pins 32 and 33, respectively, and when the cassette 3 is set, the position and height determining pins 201 and 202 and the height are fixed to the main body. The left portion of the cassette 3 positioned by the pin 203 (see FIG. 13) is pressed and fixed. The right side portion is pressed by the cassette holder 12 itself, and the pressing force is set by the spring 20 attached to the cassette lid 2.
According to 0. (See FIG. 15) The cassette insertion guide 34 has one end rotating around pins 35 and 36 fixed to the cassette holder 12, and the other end fixed to a shaft 37 that fits and slides in a long hole 38 of the main body. .
(See FIGS. 15 and 13.) The cassette insertion guide 34 smoothly inserts the cassette and prevents erroneous insertion.

The above is a description of the cassette holder 12. Next, the center hub pressing mechanism of the cassette will be described with reference to FIG. 12, FIG. 16, FIG. 17, and FIG. Center hub pressing board 39
Rotates about the shaft 10 and its rotation range is limited by the projection 2a of the cassette lid. Pressing pins 40 and 41 for pressing the center hub 5 of the cassette when setting the cassette as shown in FIG. 16 are movably attached to the pressing substrate 39 in the pressing direction, and pressing springs 42 and 43 are fixed at one end by pins 44 and 45, respectively. The pressing pins 40 and 41 are pressed. The spring 46 has one end fixed to a pin 47 and the other end in contact with the cassette lid 2 as shown in FIG.
At 6, a clockwise moment is applied to the pressing substrate 39, and the center hub 5 is pressed by the pressing pins 40, 41 via the pressing springs 42, 43 and pushed into the spindle shaft 48.

The pressing release lever 49 is a pin 5 fixed to the main body.
0, and when one end 49a is pushed by the cassette lid 2, it rotates clockwise as shown in FIG.
Pushes up the pressing substrate 39. As a result, the center hub 5 of the set cassette 3 becomes free and the rotation of the magnetic disk becomes possible. Between the cassette lid 2 and the cassette holder 12, there is an associated member for smoothly inserting and ejecting the cassette 3 without error. Figures 12, 13, 2
At 0 and 21, the plate 51 has an elongated hole 51a, and pins 52 and 53 fixed to the cassette lid 2 and the cassette holder 12, respectively, slide in the elongated hole 51a, and the cassette lid 2 and the cassette holder 12 are elongated. The opening angle is limited so as to open only the range.

Further, an opening angle limiting plate 54 for limiting the entire opening angle is attached so as to be rotatable about the shaft 10. A pin 55 fixed to the cassette lid 2 is fitted and slid into one of the two long holes 54a and 54b, and the two slots 54a and 54b are in a closed state of the lid 2 in FIG. 20 and an open state in FIG. During this, the opening angle of the lid 2 and the holder 12 is limited. Here, the pin 56 is fixed to an L-shaped plate 57, and the L-shaped plate 57 is fitted with a pin 58 fixed to the main body.
1 is upwardly movable. When the lid 2 is opened by the spring 11, the L-shaped plate 57 has a spring 5 stronger than a force that can lift the pin 56 upward through the opening angle limiting plate 54.
Therefore, when the lid release button 300 is operated, the opening angle of the cassette lid 2 becomes as shown in FIG. When the tip of the lid 2 is further pushed up from the state shown in FIG. 21, the plate 57 is lifted against the spring 59, and
Is engaged with the bent portion 24a of the locking member 24, the cassette discharge lever 20 is released, and the cassette 3 is discharged.

Next, a series of operations for loading and unloading the cassette will be described. To set a cassette, open the cassette lid, insert the cassette, open the shutter, and fix the cassette in this order. To remove the cassette, open the cassette lid, close the shutter at the same time as discharging the cassette, and finally remove it. . First, the cassette set will be described.
In FIGS. 1 and 2, the user operates the lid release button 300 to open the cassette lid, and inserts the cassette 3 with the shutter 6 closed as shown in FIG. At this time, erroneous insertion cannot be performed due to the cassette guide 34. Further, at this time, the opening angle of the cassette lid 2 is required to push the cassette in with a finger 400 as shown in FIG. 4 at the time of insertion, and to take out the cassette with two fingers 401 and 402 as shown in FIG. The angle is enough to take out. When the cassette 3 is inserted, as shown in FIG. 14, the shutter 6 gets over the slope of the projection 15 a of the shutter closing member 15 and further enters, and the end 15 a enters the hole 6 a of the shutter 6. When the shutter further advances, the shutter release member 14 and the shutter 6 come into contact with each other. Thereafter, only the cassette housing 4 advances, and the shutter 6 is opened. At the same time, the cassette discharge member 20 is pushed by the leading end of the cassette 3 and is rotated clockwise in FIG. 13, and the leading end 20a is locked by the locking member 24 (FIG. 15). At this time, the temporary fixing member 27
In this case, the leading end 27a falls into the hole 4e of the cassette housing, and temporarily fixes the cassette housing.

Next, when the cassette lid is closed, the cassette housing 4 is firstly rotated by the cassette holder 12 being pushed by the spring 200 and rotating in the clockwise direction.
02, the right part is pressed by the holder 12, and the left part is pressed and fixed by the springs 30 and 31 (see FIGS. 12 and 13). Next, as shown in FIGS. 16, 17, and 18, the center hub 5 is pressed by the center hub pressing means and the releasing means.
The magnetic sheet 8 is firmly fixed to the spindle shaft 48 without eccentricity, and the magnetic sheet 8 faces the lower stabilizing plate 106 and the recording head 107 as shown in FIG. At this time, the upper stabilizing plate 105 attached to the cassette lid 2 and the PG detecting means 11
4 is set in place. Thus, the cassette 3 is fixed and magnetic recording is enabled.

Next, when taking out the cassette, when the cassette lid 2 is first released by operating the release button 300, the spring 1 is released.
1, the cover 2 and the cassette holder 12 are opened, and the state is shifted from FIG. 20 to FIG. In this state, the cassette 3 is locked by the temporary stopper member 27 and does not come out regardless of the orientation of the main body. When the lid 2 is further opened, the plate 57 is lifted up against the force of the spring 59 and the cassette holder 12 is also opened, and the locking member 2 shown in FIG.
4 is engaged with a part 250 of the main body at the bent portion 24a to release the cassette discharging member 20 and discharge the cassette 3 against the bundling force of the temporary fixing member 27. At this time, the shutter 6 is closed by the shutter closing member 15 as the cassette 3 is discharged.

In this state, the cassette 3 is free and can be taken out by hand. At the time of taking out as shown in FIG. 22, the shutter closing member 15 is pulled by the shutter 6, but the inclined surface 15d of the hole 15c and the pin 17 are brought into contact with each other to move rightward as a whole, while moving the pin 16 to the center. Then, the projection 15a of the shutter closing member 15 retreats from the shutter 6 in the counterclockwise direction.

In the above embodiment, an example in which the present tooth is applied to an electronic still camera, which is a magnetic recording apparatus, has been described. However, the present invention is not limited to this, and an apparatus using a magnetic sheet cassette as shown in FIGS. For example, the cassette mounting apparatus of the present invention can be applied to a magnetic reproducing apparatus or an apparatus in which magnetic recording and reproduction are integrated. Further, the present invention is not limited to the magnetic sheet cassettes shown in FIGS. 5 to 10, but can be applied to a magnetic tape cassette or a cassette using a recording medium other than magnetic. Further, in the embodiment, the cassette lid is shown as a door, but the whole cassette lid protrudes from the main body, protrudes, slides the cassette into the inside of the cassette lid, and then inserts the cassette lid into the original position. The present invention is also applicable to a type in which the cassette is mounted by pressing to return.

[0029]

According to the present invention, the shutter of the magnetic cassette can be completely opened and closed. Further, when the magnetic cassette is detached from the cassette holder, a part thereof pops out by changing the cassette holder from the closed state to the open state, so that the operator can easily take out the cassette holder. Further, when the magnetic cassette is inserted into the cassette holder and the cassette holder is closed, the positioning holes of the magnetic cassette and the positioning pins of the base are fitted to each other, so that the magnetic reproduction is performed at the opening window where the shutter is opened. The head can be inserted.

[Brief description of the drawings]

FIG. 1 is an external view of an electronic still camera according to an embodiment of the present invention.

FIG. 2 is a view in which a cassette lid shown in FIG. 1 is opened.

FIG. 3 is a sectional view of a main part of the electronic still camera shown in FIGS.

FIG. 4 is a sectional view of a main part of the electronic still camera shown in FIGS.

FIG. 5 is a diagram showing an example of a cassette used in the apparatus of the present invention.

FIG. 6 is a diagram showing an example of a cassette used in the apparatus of the present invention.

FIG. 7 is a diagram showing an example of a cassette used in the apparatus of the present invention.

FIG. 8 is a diagram showing an example of a cassette used in the apparatus of the present invention.

FIG. 9 is a view showing an example of a cassette used in the apparatus of the present invention.

FIG. 10 is a diagram showing an example of a cassette used in the apparatus of the present invention.

FIG. 11 is a diagram showing an example of a cassette used in the apparatus of the present invention.

FIG. 12 is a sectional view of an embodiment of the present invention.

FIG. 13 is a sectional view of an embodiment of the present invention.

FIG. 14 is a sectional view of a main part when a cassette is inserted and ejected.

15 is a sectional view taken along the line FF in FIG. 12;

FIG. 16 is a sectional view taken along the line GG in FIG. 12;

17 is a sectional view taken along the line GG in FIG.

FIG. 18 is a sectional view taken along the line HH in FIG.

19 is a sectional view taken along the line KK in FIG.

20 is a sectional view taken along the line MM in FIG.

21 is a sectional view taken along the line MM in FIG.

FIG. 22 is a sectional view of a main part when a cassette is inserted and ejected.

[Description of Signs of Main Parts]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Cassette lid 3 Cassette 20 Cassette discharge member 24 Locking member 250 Partial protrusion of main body 27 Temporary stop member 57 L-shaped plate

Claims (1)

(57) [Claims] A first cover member having an opening window and a positioning hole for covering a recording / reproducing surface of the magnetic sheet; a second cover member for covering the other surface of the magnetic sheet; 1. A shutter having a groove formed on at least one peripheral portion of a second cover member and having a hole and movable between an open position for opening the opening window and a closed position for closing the opening window. A cassette mounting device capable of inserting and removing a magnetic cassette including a member, a base having positioning pins corresponding to the positioning holes, and a rotatable opening and closing state with respect to the base. A cassette holder that can be inserted into and removed from the magnetic cassette in the open state; and a cassette holder that is provided on the path of the groove and that is inserted into the cassette holder according to insertion of the magnetic cassette into the cassette holder. Shutter opening means for moving the shutter member in a direction opposite to the insertion direction to move the shutter member from the closed position to the open position; and a biasing means responsive to insertion of the magnetic cassette into the cassette holder. A cassette discharging means for locking the cassette when the cassette holder is closed, releasing the cassette holder when the cassette holder is opened at a predetermined angle, and partially discharging the magnetic cassette from the cassette holder; In the course of insertion into the cassette holder, it enters the hole, and moves the shutter member in the insertion direction with respect to the magnetic cassette in accordance with the detachment of the magnetic cassette from the cassette holder. Position when removing the magnetic cassette from the cassette holder. Cassette loading apparatus characterized by having a shutter closure means for al retracted.