JPH08138294A - Door opening/closing device in recording and reproducing device - Google Patents

Abstract

PURPOSE: To surely prevent erroneous double insertion of a disk by making a door of the disk port unable to open independently of the position of a recording/reproducing deck mechanism unless the preparation for accepting the disk is ready. CONSTITUTION: At the time when a horizontal loading mechanism 1 is in stand-by state at the farthest part from the disk port 10, a lock pin 12 of a door lock lever 4 is abutted on the back surface of door to lock the door, thereby the disk can not be inserted. When the disk is inserted or ejected, a switch provided on the device is pushed to forward the mechanism 1. When the mechanism 1 is forwarded, a pin 17 is abutted on a cam 19 of a door opening/closing lever 5 to turn the lever 5 and open the door 11. When the mechanism 1 is shifted further to the forefront end, the cam 19 is separated from the pin 17, and the lever 5 is turned by a spring 8 to close the door 11. When the disk is slightly pushed in from the port 10 in this state, a detection switch is operated to retreat the mechanism 1, and simultaneously the door 11 is locked by the operation of the lever 4, then the disk is unable to insert doubly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is mainly used for disks and Cs.
The present invention relates to a door opening / closing device for a disc insertion opening in a recording / reproducing device of a recording medium such as a D, MD, DAT, or VTR cassette (hereinafter, simply referred to as a disc). By inserting
After that, the present invention relates to a door opening / closing mechanism used for an insertion opening of a slot-in type disc carrying mechanism for automatically loading a disc for recording / playback.

[0002]

2. Description of the Related Art Conventionally, in this type of disc recording / reproducing apparatus, a recording / reproducing deck mechanism is arranged near the disc insertion opening. This is to prevent double insertion by hitting a disc mounted on the deck near the insertion port if the next disc is accidentally pushed into the insertion port while the disc is already mounted on the deck.

[0003]

Therefore, in such conventional means, there is a design constraint that the recording / playback deck mechanism must be arranged near the disc insertion slot, and the device design is constrained and the discs are discriminated from each other. Since the double insertion is prevented by the collision of the disc, the disc, the recording and the reproducing deck may be vibrated and the members may be damaged.

Therefore, according to the present invention, unless the disc is ready to receive the disc, the door of the disc insertion opening cannot be opened regardless of the position of the recording / reproducing deck mechanism to ensure double erroneous insertion of the disc. The main object of the present invention is to provide a door opening / closing device that can be prevented.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, in the door opening / closing device according to the present invention, the disc insertion opening (10)
In a recording / reproducing device formed so that the horizontal loading mechanism (1) of the disc recording / reproducing deck moves horizontally toward and away from the door (1
1) and a door lock lever (4) that locks the door (11) when the horizontal loading mechanism (1) is in the retracted position in the device,
A door opening / closing lever (5) for opening and closing the door (11) and a pin (17) attached to the horizontal loading mechanism (1) for operating the door locking lever (4) and the door opening and closing lever (5). Including, the pin (17) moves the door lock lever (4) to the unlock position when the horizontal loading mechanism (1) advances, and then operates the door opening / closing lever (5) to open the door. It is a structured structure.

[0006]

In the door opening / closing device configured as described above,
Door (11) except when the horizontal loading mechanism (1) of the recording / playback deck is forward and the disk is ready to receive
Therefore, the double erroneous insertion of the disc can be reliably prevented, and the reciprocating motion of the horizontal loading mechanism (1) in the conventional recording / reproducing deck is used to automatically open and close the door. Since it locks and unlocks the door, the pin (17) fixed to the horizontal loading mechanism (1) and the door lock lever (4) and door opening / closing lever (5) that operate in cooperation with this pin are rare configurations. The parts can be simply constructed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below based on an embodiment shown in the drawings. 1 to 4, reference numeral (1) is a horizontal loading mechanism for recording / reproducing decks of a disc, and a shaft (3) fixed to a chassis (2) of a device.
It is formed so as to reciprocate back and forth by known means. Further, on the side surface of the horizontal loading mechanism (1), there are provided two pins (17), (17) for operating a door lock lever (4) and a door opening / closing lever (5) which will be described later. The two pins (17) and (17) may be integrally formed by horizontally elongated plate-shaped pins.

Reference numeral (4) is a door lock lever, (5) is a door opening and closing lever, and these levers (4) and (5) do not interfere with the forward and backward movement of the horizontal loading mechanism (1). It is held swingably by a common horizontal shaft (6) at a lateral position. The door lock lever (4) is always pulled counterclockwise by the spring (7),
(5) is always pulled clockwise by the spring (8).

Further, the door lock lever (4) is provided at its tip with a lock pin (12) for locking the door (11) of the disc insertion opening (10) provided in the front chassis (9) of the device. ing. This lock pin (12) prevents the door (11) from opening when the horizontal loading mechanism (1) is in the retracted position as shown in Fig. 1 and its tip abuts against the back surface of the door (11). ing. When the horizontal loading mechanism (1) advances, the door lock lever (4) receives the pin (17) and rotates the door lock lever (4) clockwise to unlock the lock pin (12). A guide groove (18) for avoiding the lock position is provided. The door (11) can be opened and closed upward and rearward with the pivot shaft (14) at the upper end as a fulcrum.

Further, the door opening / closing lever (5) is provided with a pin (16) slidably fitted in the long hole (15) of the door (11) at the tip thereof, and the horizontal loading mechanism (1 ) Is formed with a cam (19) that comes into contact with the pin (17) and rotates the door opening / closing lever (5) counterclockwise when (1) moves forward. The door (11) is designed to be opened by rotating the door opening / closing lever (5) counterclockwise.

FIG. 1 shows a state in which the horizontal loading mechanism (1) is on standby far behind the disc insertion opening (10). In this state, the door (11) is closed by the door opening / closing lever (5), and the lock pin (12) of the door lock lever (4) contacts the back surface of the door to lock the door. Therefore, the disc cannot be inserted in this state.

When inserting or ejecting the disc, a switch provided on the device is pushed to drive the moving mechanism of the horizontal loading mechanism (1) to advance the horizontal loading mechanism (1). Horizontal loading mechanism (1)
When is moved toward the insertion slot, first the pin (17) engages with the guide groove (18) of the door lock lever (4) and the door lock lever
Rotate (4) clockwise to avoid the lock pin (12) at the tip to the door unlock position (see FIG. 2).

From this state, further horizontal loading mechanism
When (1) moves forward, the pin (17) contacts the cam (19) of the door opening / closing lever (5) to rotate the door opening / closing lever (5) counterclockwise as shown in FIG. Open (11).

Further, as shown in FIG. 4, when the horizontal loading mechanism (1) moves to the foremost end, the cam on the upper surface of the door opening / closing lever (5) is released from the pin (17), whereby the door opening / closing lever (5) is released. ) Is rotated clockwise by the spring (8) and the door (1
1) Close. However, since the door (11) is unlocked in this state, the door (11) can be freely opened. In this state, insert the disc (A) as shown in Fig. 5.
When pushed in a little from (10), the detection switch (not shown) installed near the insertion port operates and the horizontal loading mechanism
Figure 1 shows the horizontal loading mechanism (1) that drives the moving mechanism of (1).
Move back to the state of and wait for recording and playback. At the same time, the door (11) is locked by the operation of the door lock lever (4) so that the disc cannot be double inserted.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and the constitutional requirements are provided.
In addition, the object of the present invention can be achieved and the invention can be appropriately modified and carried out within the range in which the following effects are exhibited.

[0016]

Since the door opening / closing device according to the present invention is constructed as described above, the door is opened except when the horizontal loading mechanism of the recording / reproducing deck is advanced and the disk is ready for receiving. Therefore, double erroneous insertion of the disk can be surely prevented, and the reciprocating motion of the horizontal loading mechanism in the conventional recording / reproducing deck is used to automatically open / close the door and lock / unlock the door. Since this is done, the pin that is fixed to the horizontal loading mechanism and the few components such as the door lock lever and the door opening / closing lever that operate in cooperation with this pin can be simply configured, thereby reducing costs and reducing trouble factors. There is a remarkable effect that it can be achieved.

[Brief description of drawings]

FIG. 1 is a partial sectional side view showing an embodiment of a door opening / closing device showing a state in which a horizontal loading mechanism according to the present invention is at a rearmost position.

FIG. 2 is a partial sectional side view showing a state in which a horizontal loading mechanism similar to the above is slightly advanced.

FIG. 3 is a partial cross-sectional side view showing a state in which the horizontal loading mechanism is further advanced from the state of FIG.

FIG. 4 is a partial cross-sectional side view showing a state in which the horizontal loading mechanism has advanced to the foremost end.

5 is a view showing a state where a disc is inserted in the state of FIG. 4 1
FIG.

FIG. 6 is a plan view of only a main part in FIG.

[Explanation of symbols]

 (1) Horizontal loading mechanism (4) Door lock lever (5) Door opening / closing lever (10) Disc insertion slot (11) Door (17) Pin

Claims (1)

[Claims] 1. In a recording / reproducing device formed so that a horizontal loading mechanism (1) of a disc recording / reproducing deck horizontally reciprocates toward the disc insertion opening (10), the disc insertion opening (10) is opened and closed. Door (11), a door lock lever (4) that locks the door (11) when the horizontal loading mechanism (1) is in the retracted position inside the device, and a door opening and closing lever (4) that opens and closes the door (11). 5) and a pin (17) attached to the horizontal loading mechanism (1) for operating the door lock lever (4) and the door opening / closing lever (5), the pin (17)
Is configured to move the door lock lever (4) to the unlock position when the horizontal loading mechanism (1) moves forward, and then operate the door opening / closing lever (5) to open the door. Door opening and closing device for equipment.