JPH0644765A - Door device - Google Patents

Abstract

PURPOSE:To discriminate whether a medium is loaded or not without using a sensor in a door device always closing an opening part of whether a recording medium is loaded or not. CONSTITUTION:This device is provided with a first door 3 closing a recording medium port 1a at the time of loading no recording medium and a second door 2 closing the recording medium port 1a at the time of loading the recording medium, and at least one of shapes, colors or displays on the first door 3 and the second door 2 are differed from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to general recording / reproducing apparatus for recording / reproducing by introducing a recording medium into the apparatus.
The present invention relates to a door device that closes a recording medium insertion port after introducing the recording medium into the device.

[0002]

2. Description of the Related Art Conventionally, as a door device used in an information recording / reproducing apparatus, a structure having a single plate door as shown in FIG. 6 has been widely used.

In FIG. 6, reference numeral 1 denotes a frame body made of synthetic resin or the like, and the frame body 1 has a closing portion 1a for inserting a medium. Further, 21 is a support shaft 2 made of metal or synthetic resin.
3 is a plate door pivotally supported by 3, and 22 is a spring for urging the plate door 21 in a direction of closing the closing portion 1a. And when there is no recording medium, the plate door 21
Closes the closing portion 1a, and when the medium is inserted, the plate door 21 pushed in the D direction by the medium rotates in the E direction around the support shaft 23, and after loading, the inside of the apparatus can be seen from the closing portion. It was a structure.

Due to this structure, it is not possible to prevent the entry of dust, foreign matter, etc. into the information recording / reproducing device when the recording medium is mounted. Therefore, it is desirable to have a mechanism in which the closing portion is closed regardless of whether the medium is mounted or not mounted. However, in order to do this with one door, the mechanism is inevitably complicated and is not suitable for downsizing the device. is there. There is also a problem that a sensor is required to confirm the presence / absence of a recording medium in the device.

To compensate for these drawbacks, a two-door mechanism as shown in FIG. 7 has been proposed. In FIG. 7, members which are the same as or considered to be the same as those in FIG. 6 are denoted by the same reference numerals, and detailed description thereof will be omitted. In FIG. 7, reference numeral 24 denotes a shutter made of metal or the like, which is formed by a substantially U-shaped thin plate, and both ends thereof are provided with engaging holes for engaging with engaging protrusions of a lever described later. The lever 25 has a substantially V shape, and has an abutting portion 25a for abutting the recording medium at one end and an engaging protrusion 25b for engaging the engaging hole 24a at the other end.
It is attached to the frame body 1 via 6. That is, the lever 25 is swingably attached by the pin 26 while the shutter 24 is sandwiched between the lever 25 and the frame body 1. At this time, the engaging projection 25b of the lever 25 engages with the engaging hole 24a of the shutter 24, and the lever 25 and the shutter 24 form a link mechanism, and the swinging motion of the lever 25 is converted into the linear reciprocating motion of the shutter 24. Convert. Further, a spring 27 is suspended between the locking holes 25c of the lever 25, and always urges the side of the lever 25 on which the engaging projection 25b is formed in the direction opposite to the insertion opening, that is, in the direction in which the shutter 24 is released. .

Next, the operation of the door device constructed as described above will be described. First, the recording medium is the plate door 21.
Is pushed open and inserted, and when it is introduced to the specified position, it is lowered substantially vertically to the turntable side (not shown). At this time, the trailing edge of the recording medium comes into contact with the contact portion 25a, and the harmful contact portion 2
5a is rotated downward (direction of FIG. 7F). As a result, the engagement protrusion 25b rotates upward (direction of FIG. 7G), and the shutter 24 slides upward (direction of FIG. 7H) along the inside of the frame 1 to completely close the medium insertion opening 1a. To do. At this time, the plate door 21 contacts the upper surface of the recording medium and is in a half-open state, and the shutter 24 is positioned between the plate door 21 and the frame 1 to perform the above-described closing.

When the eject lever (not shown) is operated after the recording or reproduction is finished, the contact portion 25a of the lever 25 is raised (the direction opposite to F in FIG. 7) as the medium is raised, and the shutter 24 is lowered. (FIG. 7 anti-H direction).
Then, when the medium is ejected to the outside of the apparatus, the plate door 21 closes the opening 1a by the elastic force of the spring 22.

[0008]

[Problems to be Solved by the Invention]
In a door device such as the above, since the shape, color or display of the door when the recording medium is mounted and when the recording medium is not mounted is not distinguished, it is impossible to determine which state the user is in just by looking at the door. However, there is a problem in that a sensor or the like for confirming the presence or absence of the recording medium is required. The present invention was devised in view of such drawbacks, without using a sensor or the like,
It is an object of the present invention to provide a door device that allows a user to distinguish between when a recording medium is attached and when the recording medium is not attached.

[0009]

In order to achieve the above object, a door device according to the present invention comprises a first door for closing a recording medium insertion opening when a recording medium is not mounted, and the recording medium insertion when the recording medium is mounted. A second door that closes the mouth, and at least one of the shape, color, or display of the first door and the second door
The feature is that they are different.

[0010]

According to the above means, at least one of the shape, the color, and the display of the first door and the second door are different from each other. It becomes possible to discriminate between.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 are for explaining an embodiment of the present invention, FIG. 1 is an exploded perspective view thereof, and FIGS. 2 to 5 are operation explanatory views.

In FIG. 1, reference numeral 1 is an opening 1a for inserting a medium.
A frame body made of a synthetic resin or the like, and curved door support portions 1b and 1c, which will be described later, are integrally formed on both side portions of the frame body 1, and the support portions 1b and 1c respectively have support holes. 1
b, a notch 1e is provided. Further, the one support portion 1
A stopper 1f for restricting the rotation angle of the curved door is integrally formed at the end of b. Reference numeral 2 denotes a curved door made of synthetic resin or the like having a curved surface portion 2a for closing the opening portion 1a, and both side surface portions 2b and 2c of the curved door 2 are provided with a shaft 2d engaging with the support hole 1d and the notch 1e. The curved door 2 is formed so as to be rotatable about the shaft 2d, and the support hole 2 for supporting a plate door described later is provided.
e is provided.

Further, a protruding portion 2f extending in the opposite direction to the curved surface portion 2a is integrated with the one side surface portion 2c, and the protruding portion 2f is provided with a cut for locking a torsion spring described later. A notch 2g is provided. Reference numeral 3 denotes a flat plate door, and a shaft 4 is fixedly mounted on an upper end portion 3a of the plate door 3. Both ends of the shaft 4 are engaged with the support holes 2e so that the plate door 3 can rotate about the shaft 4. Further, 5 is a torsion spring, both ends of which are bent as a locking portion 5a and a contact portion 5b, the locking portion 5a is locked in the cutout 2g, and the corresponding contact portion 5b is in the plate door 3.
This portion is in contact with a part of the side opposite to the medium insertion opening, and the torsion spring 5 urges the curved door 2 and the plate door 3 in the direction of closing the opening 1a. Next, the operation of the present invention will be described with reference to FIGS.

(At the time of loading) First, when the recording medium 10 presses the plate door 3 from the state shown in FIG.
Rotates in the A direction in FIG. 2 against the biasing force of the torsion spring 5. At the same time, since the shaft 4 is also pushed together, the curved door 2 rotates about the shaft 2d until a position where a part of the peripheral edge of the side surface portion 2b contacts the stopper 1f (see FIG. 3).

In these figures, reference numeral 11 denotes a sliding plate which is arranged in the apparatus as much as possible in the medium insertion and ejection directions. Reference numeral 12 denotes a holder, which holds the recording medium 10 and works in conjunction with the sliding movement of the sliding plate 11 to introduce the medium into the apparatus or discharge it to the outside of the apparatus, or not shown. Lowering to lock to the turntable,
Or move to pull up from the turntable. A chassis 13 supports the frame body 1, the sliding plate 11, and the like. Then, the sliding plate 11 and the holder 12
When the sheet is drawn into the apparatus together with the recording medium 10 by the force of a spring or the like (not shown), the sliding plate 11 that comes into contact with the protruding portion 2f and prevents the curved door 2 from closing the opening 1a is replaced by a plate. The door 3 and the shaft 4 are blocked by the recording medium 10, serve as a stopper for the rotation of the curved door 2 in the B direction by the urging force of the torsion spring 5, and the medium insertion opening is not closed yet (FIG. 4). reference).

Further, the holding body 12 descends, and the recording medium 1
When 0 is fixed to a positioning pin (not shown), the curved door 2 lowers the medium 10 and the locking portion 5a of the torsion spring 5
Due to the difference in the rotational force acting on the contact portion 5b, the contact portion 5b rotates in the direction B in FIG. 4 to a position where it completely closes the opening 1a (see FIG. 5).

(At the time of ejecting) The process reverse to that at the time of the above-mentioned loading is followed. When the holding body 12 rises from the state of FIG. 5, the recording medium 10 pushes the plate door 3 and the shaft 4 in the upward direction, and at the same time, a rotational force acts on the curved door 2 in the C direction in FIG. The opening 1a is rotated to a position where it is fully opened (see FIG. 4).

By operating an eject lever (not shown), the sliding plate 11 and the holding body 12 move in the medium ejecting direction by the movement of the spring, and accordingly, the recording medium 10 also moves in the ejecting direction (FIG. 3). reference). Then, the sliding plate 11 moved toward the outlet side supports the protruding portion 2f of the curved door 2. Further, as the recording medium 10 is ejected, the plate door 3 closes the opening 1a by the force of the torsion spring 5 (see FIG. 2).

In the present invention, naturally, it is also possible to divide the torsion spring 5 into two or more springs and arrange the curved door 2 and the plate door 3 separately so as to urge them.

When the curved door 2 closes the opening 1a, the curved door 2 is pressed against the frame 1 by a spring or the like,
It is possible to enhance the airtightness by installing packing between the curved door 2 and the frame 1. In addition, the frame 1 can be integrated with the chassis 13 to greatly reduce the number of parts and facilitate the assembly.

Further, by changing the shapes and materials of the curved door and the plate door, it is possible to discriminate whether the medium is inserted or not. This can be made more reliable by changing the color and display.

[0022]

According to the present invention, the first door includes a first door that closes the recording medium insertion opening when the recording medium is not mounted and a second door that closes the recording medium insertion opening when the recording medium is mounted. Since at least one of the shape, the color, and the display of the second door is different from that of the second door, the user does not need a sensor or the like for checking the presence or absence of the recording medium. Judgment is possible naturally.

[0023]

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, FIGS. 2 to 5 are operation explanatory diagrams of the embodiment, and FIGS. 6 and 7 are exploded perspective views of a conventional example. 1 Frame 1a Opening 1f Stopper 2 Curved Door 2d Shaft 2e Support Hole 2f Projection 3 Plate Door 4 Shaft 5 Torsion Spring 5a Engagement 5b Abutment 10 Recording Medium 11 Sliding Plate 12 Holder 13 Chassis

Claims (1)

[Claims] 1. A first door that closes a recording medium insertion opening when a recording medium is not attached, and a second door that closes the recording medium insertion opening when a recording medium is attached, wherein the first door and the second door are provided. A door device characterized in that at least one of the shape, the color, and the display is different from the door.