JPH0355164Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a double loading prevention mechanism, especially when a recording medium such as a disk or cassette on which audio or video is recorded is already inside the playback/recording device. When loaded, it relates to a mechanism that prevents another recording medium from being loaded twice into the device.

[Conventional technology]

In recent years, with the development of audio and video technology and the diversification of hobbies, the variety of recording media for enjoying sound and images has increased.Currently, in addition to traditional cassettes and records, CDs (compact discs),
There are too many types to list, such as VDs (visual discs) and video cassettes. As a result, the types of devices for reproducing/recording these recording media are increasing, and the number of devices owned by users is also increasing.

For this reason, it has become preferable for playback/recording devices for various recording media to be as compact as possible, and in order to make the front panel of the device smaller and more functional, the recording medium is placed in a horizontal position. The number of things loaded into the device is increasing.

A device in which the recording medium is loaded horizontally into the device has a recording medium insertion hole in the front panel of the device, and the opening is generally provided with an opening/closing door. .

[Problem that the invention attempts to solve]

However, as mentioned above, in the playback/recording device in which the recording medium is loaded horizontally into the device, the front panel of the device is provided with an insertion hole for the recording medium, and an opening/closing door is provided at the opening of this insertion hole. Even if a recording medium is loaded inside,
Even when no recording medium is loaded inside, the opening/closing door remains closed, so if the user does not notice that a recording medium is already loaded inside, another recording medium can be inserted into the insertion hole. There was a problem that there was a risk of damaging the inside of the device by pushing it inside the device.

For this reason, some devices are equipped with an indicator on the front panel of the device that shows the loading status when a recording medium is loaded inside the device, but if the user overlooks the lighting of this indicator, it will result in double loading. The problem remained that there was a risk of refilling.

The present invention was developed in order to solve the problems peculiar to the conventional playback/recording device in which the storage medium is loaded into the device in a horizontal position by opening and closing the opening/closing door. To provide an excellent double loading prevention mechanism capable of preventing double loading of a recording medium into a device by preventing an opening/closing door provided on the front panel of the device from opening when the device is loaded. It is an object. Another object of the present invention is to provide a double loading prevention mechanism that can be simplified by using a conventional mechanism without using special parts for preventing double loading. be.

[Means for solving problems]

The double loading prevention mechanism of the present invention achieves the above object, when an audio or video recording medium is already loaded inside the playback/recording device, another recording medium is not inserted into the playback/recording device. A double loading prevention mechanism for preventing insertion of the device, comprising: an opening/closing door provided in the recording medium insertion hole of the device and opening inward when a recording medium is inserted/removed; and a door provided on the side of the device to prevent the opening/closing. A door opening/closing member that moves to the rear of the device in conjunction with the inward rotation of the door; and a door opening/closing member provided on the side of the device on the same side as the door opening/closing member and linked to the loading of the recording medium into the device. and a slide plate that moves toward the front of the device, and this slide plate comes into contact with the door opening/closing member to prevent the door opening/closing member from moving toward the rear of the device at the final moving position toward the front of the device. It is characterized by having parts.

[Effect]

According to the double loading prevention mechanism of the present invention, when an audio or video recording medium is loaded into the playback/recording device, the member with the stopper moves, thereby preventing the door opening/closing lever from moving. As a result, the opening/closing door linked to the door opening/closing lever does not open, thereby preventing the recording medium from entering the apparatus.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the structure of an embodiment of the double loading prevention mechanism of the present invention, and this embodiment is an example in which the recording medium is a CD.

In the figure, 1 is an opening/closing door provided at the opening of the CD playback device 10, 2 is a door opening/closing lever, 3 is a sliding plate, 4 is a link connecting the door opening/closing lever 2 and the sliding plate 3, and 5 is a link connecting the door opening/closing lever 2 and the sliding plate 3. The CD playback device 1
0 is a shaft, 6 is a door opening/closing pin, 7 and 8 are guide pins, and 9 is a guide hole.

The opening/closing door 1 covers the opening (not shown) of the CD insertion hole of the CD playback device 10, and is inserted into the inside of the CD playback device 10 around a pin 11 pivotally supported by the chassis 5 when inserting or removing a CD. It is supposed to rotate.
Further, a pin 12 is provided protruding from one side of the opening/closing door 1, and this pin 12 is provided with the link 4.
One end is rotatably attached.

The door opening/closing lever 2 is provided on the side of the CD playback device 10 on the same side as the pin 12 protruding side of the door 1, and is connected to a main body 23 that slides on the top surface of the CD playback device 10. , and a guide plate 24 that is provided perpendicularly to the main body 23 and moves along the side surface of the CD playback device 10. The guide plate 24 is provided with pins 21 that protrude from both sides of the plate.
The other end of the link 4 is rotatably attached to the outwardly projecting portion of the link 4. Further, the portion of the pin 21 that protrudes toward the CD playback device 10 is inserted into a guide hole 9 provided in the chassis 5. On the other hand, the main body 23 has a guide hole 22,
A claw 20 is provided that projects outward from the side surface of the CD playback device 10. A door opening/closing pin 6 is inserted into one end of the guide hole 22,
As the pin 6 moves rearward of the CD playback device 10, the door opening/closing lever 2 moves rearward.

The opening/closing door 1 and the door opening/closing lever 2, which are connected by the link 4 in this manner, are conventional mechanisms and are adapted to move in conjunction with each other. That is, when the opening/closing door 1 is pushed inside the CD playback device 10 by an external force, the door opening/closing lever 2 moves through the guide hole 9, due to the movement of the link 4.
22 to the rear of the CD playback device 10.
Further, when the door opening/closing lever 2 is moved to the rear of the CD reproducing apparatus 10 on the pin 6, the opening/closing door 1 is rotated inwardly of the CD reproducing apparatus 10 by the link 4, and the CD insertion hole is opened. The opening/closing door 1 may be biased in the direction of covering the CD insertion hole using a coiled spring or the like.

The slide plate 3 is movably attached to the side surface of the CD playback device 10 on the same side as the door opening/closing lever 2 by a driving means such as a motor. In this example, two guide pins 7 and 8 protruding from the side surface of the CD playback device 10 are inserted into two parallel guide holes 31 and 32 provided in the slide plate 3. The side surface of the CD playback device 10 is moved in parallel. The slide plate 3 is moved by, for example, a rack attached to the inside of the slide plate 3 and driven by a pinion attached to the rotating shaft of a motor.

Further, a stopper 30 that projects upward from the top surface of the CD playback device 10 is provided at the upper portion of the slide plate 3 on the door 1 side. Further, this slide plate 3 remains at the position shown in the figure, that is, at the rear of the CD playback device 10 when no CD is loaded in the CD playback device 10, but this position is not maintained when the opening/closing door 1 is open. This is a position where the movement of the door opening/closing lever 2 is not obstructed even if the door opening/closing lever 2 moves to the maximum rear side of the CD playback device 10. On the other hand, when a CD is loaded into the CD playback device 10, the slide plate 3 moves on the side surface of the CD playback device 10 toward the opening/closing door 1, and the stopper 30 is provided on the door opening/closing lever 2. It comes to a position where it comes into contact with the claw 20.

The actual operation of the embodiment configured as shown in FIG. 1 will now be explained with reference to FIG. 2, which only schematically shows the main components of FIG. 1.

FIG. 2a shows a state in which no CD is loaded in the CD playback device 10. Door 1 is a CD
The insertion hole of is in a closed state, and the slide plate 3 is
It is located behind the CD playback device 10. In this state, as shown in FIG. 2b, when the CD 50 pushes open the opening/closing door 1 and is inserted into the CD playback device 10, the rotation of the opening/closing door 1 causes the door opening/closing lever 2 to be moved via the link 4. Move to the rear side of the CD playback device 10. Even if the opening/closing door 1 rotates inward at the maximum angle and the door opening/closing lever 2 moves to the rear of the CD playback device 10 by the maximum distance, the sliding plate 3 does not come into contact with the door opening/closing lever 2 and does not allow the door to open/close. does not interfere with the movement of lever 2.

When the CD 50 is loaded into the CD playback device 10, it is carried into the CD playback device 10 by rollers (not shown) provided in the CD playback device 10, and is held at a predetermined position as shown in FIG. 2c. It is designed to be loaded into a rotating mechanism (not shown). At this time, the loading of the CD 50 is detected by a photo sensor or the like, and the motor is rotated in response to a signal from this sensor, and the slide plate 3 is moved forward of the CD playback device 10 via a rack and pinion mechanism. By moving this slide plate 3,
A stopper 30 provided on the slide plate 3 comes into contact with the pawl 20 of the door opening/closing lever 2.

As a result, the CD playback device 1 of the door opening/closing lever 2
0 cannot move backwards, and the opening/closing door 1 interlocked with the door opening/closing lever 2 also cannot be opened inward. Therefore, with the CD 50 loaded in the CD playback device 10, the user may play another CD into the CD playback device 1.
Even if I try to insert it into 0, the opening/closing door 1 will not open.
Double loading of CDs is prevented.

When ejecting the CD 50 from the loaded state, the photo sensor detects this when the CD 50 is unloaded from the rotating mechanism, and by reversing the motor, the slide plate 3 is moved to the second position.
Since it returns to the position shown in FIG. If you open the
CD50 can be excreted.

As described above, according to the double loading prevention mechanism of the present invention, double loading of the CD 50 can be prevented with a simple structure while utilizing the conventional mechanism. Note that the above embodiment shows an example in which the present invention is applied to the CD playback device 10, but the double loading prevention mechanism of the present invention is similar to that described above.
In addition to the CD playback device 10, the present invention can also be applied to devices in which a recording medium is loaded horizontally, such as an audio or video cassette playback device.

[Effect of idea]

As explained above, according to the double loading prevention mechanism of the present invention, the opening/closing door provided on the front panel of the device does not open when a recording medium is loaded inside the device, so This has the effect of preventing double loading. Also,
The double loading prevention mechanism of the present invention does not use special parts to prevent double loading and uses a conventional mechanism, so it has the effect of simplifying the mechanism.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the structure of an embodiment of the double loading prevention mechanism of the present invention, and Fig. 2 shows the operation of the mechanism shown in Fig. 1, where a is an unloaded state and b is a loaded state. The middle state (c) shows the operation of the double loading prevention mechanism of the present invention after loading. 1...Opening/closing door, 2...Lever for opening/closing door, 3...
Slide board, 4... Link, 5... Shaft, 20
...Claw, 30...Stoppa, 50...CD (Compact Disc).

Claims (1)

[Scope of claim for utility model registration] The audio or video recording medium has already been reproduced/
A double loading prevention mechanism that prevents another recording medium from being inserted into the playback/recording device when it is loaded into the recording device 10, and is provided in the recording medium insertion hole of the device 10. , an opening/closing door 1 that opens inward when a recording medium is inserted or removed; and an opening/closing door 1 provided on a side of the device 10;
a door opening/closing member 2 that moves toward the rear of the device in conjunction with the inward rotation of the door; and a door opening/closing member 2 provided on the side of the device on the same side as the door opening/closing member 2 and linked to loading of the recording medium into the device. and a slide plate 3 that moves toward the front of the apparatus, and this slide plate 3 is provided with a door opening/closing member for preventing the door opening/closing member 2 from moving toward the rear of the apparatus at the final movement position toward the front of the apparatus. A double loading prevention mechanism characterized by comprising a portion 30 that abuts the member 2.