JPS6025740Y2 - Lid device for cassette attachment/detachment device - Google Patents

Description

[Detailed description of the invention] This invention is designed to insert a cassette into the cassette holder from the cassette insertion slot provided on the front panel, and then pull the cassette into the cassette mounting position inside the front panel by moving the cassette holder and install it. The present invention relates to a lid device for a cassette attachment/detachment device for a VTR, tape recorder, etc., which is configured as follows.

This type of cassette attachment/detachment device is used for front-operated models, but if the cassette insertion slot is left open,
The inside of the device is visible through the cassette insertion slot, which is not only undesirable in terms of appearance, but also has the disadvantage that foreign objects are likely to be stuffed through the cassette insertion slot.

By the way, in the past, as seen in some car stereos, the cassette was simply inserted horizontally into the cassette slot without being drawn into the front panel, leaving part of the cassette outside the front panel. If the cassette is left in the cassette slot, a lid can be installed on the cassette slot, which can be opened and closed by inserting and removing the cassette.
The above-mentioned inconvenience can be easily prevented.

However, when the cassette is pulled into the front panel as in the present invention, it is necessary to close the cassette insertion port both before the cassette is inserted and after the cassette is pulled into the front panel. be.

This is because if the cassette insertion slot is left open after the cassette is pulled in, the inside of the device will be visible through the cassette insertion slot, and there will be problems such as foreign objects or the possibility of the next cassette being accidentally inserted twice. .

However, in this case, it is difficult to close the cassette insertion opening again even after the cassette has been pulled in with a lid that closes the cassette insertion opening (as in the case where the cassette is not pulled in).

This is because in such a case, the lid provided on the cassette insertion port becomes an obstacle when ejecting the cassette, making it impossible to eject the cassette easily.

The present invention was devised in view of the above-mentioned circumstances, and it is possible to close the cassette insertion port both before the cassette is inserted and after the cassette is drawn into the front panel, thereby preventing the cassette from being drawn in. To provide a system that can prevent the inside of the device from being seen through the cassette insertion port later, or from accidentally inserting a foreign object or the next cassette twice from the cassette insertion port.

An embodiment in which the present invention is applied to a cassette loading/unloading device for a front-operated VTR will be described below with reference to the drawings.

First, the cassette attachment/detachment device will be explained with reference to FIGS. 1A and 1B. 1 is a cassette, 2 is a cassette holder, and 3
4 is a front operation panel, 4 is a cassette insertion slot provided on the front operation panel 3, and 5 is a pair of left and right support plates vertically mounted on the chassis to support both left and right sides of the cassette holder 2.

By the way, vertical plates 6 are attached to the left and right sides of the cassette holder 2, and three guide rollers are pivotally attached to the vertical plates 6. Three guides 48 a, 7b, and 7c are provided on the support plate 5 and have an inverted S shape.
It is configured to be movable along 8c.

Further, a rack 9 having a substantially L-shape is provided on the vertical plate 6, and a pinion 10 meshed with the rack 9 is pivotally supported on the support plate 5; 10 is configured to be driven in forward and reverse rotation by a motor (not shown).

Then, with the cassette holder 2 raised to the cassette insertion position as shown in FIG. 1A, the cassette 1 is horizontally inserted into the cassette holder 2 through the cassette insertion opening 4.

When the cassette insertion is completed and this is detected by the switch, the pinion 10 is driven to rotate forward by the motor, the rack 9 is driven by the pinion 10, and the cassette holder 2 is moved to the position shown in FIG. 1B. The cassette is drawn into the mounting position indicated by the solid line.

At this time, the cassette holder 2 has guide rollers 7a,
By the guiding action of 7b, 7c and the guide grooves 8a, 8b, 8c, it is pulled horizontally to the position shown by the imaginary line in FIG. 1B, and then vertically lowered to the cassette mounting position.

When the cassette 1 is mounted at the cassette mounting position in the cassette holder 2 and this is detected by the switch, the rotation of the motor is stopped and the cassette mounting is completed.

On the other hand, when ejecting a cassette, with the cassette holder 2 being lowered to the cassette mounting position, the motor drives the pinion 10 in reverse rotation, and the pinion 10 rotates the rack 9.
is driven, and the cassette holder 2 is raised to the cassette insertion position.

At this time, the cassette holder 2 is moved in the reverse direction when the cassette is inserted, and is once raised vertically to the position shown by the imaginary line in Fig. 1B, and then horizontally to the cassette insertion position shown in Fig. 1A. be returned.

Then, when the cassette 1 is returned to the cassette insertion slot 4 by the cassette holder 2 and this is detected by the switch, the rotation of the motor is stopped and the cassette ejection is completed.

Next, a lid device applied to the cassette attaching/detaching device described above will be explained with reference to FIGS. 2A to 4.

First, in FIGS. 2A to 2C, 12 is the first lid;
3 is the second lid.

The cassette insertion slot 4 is configured to be opened and closed alternately by the first and second lids 12, 13.

By the way, the first lid 12 is disposed at the front end opening 14 of the cassette holder 2, is rotatably pivoted to a fulcrum shaft 15 installed horizontally on the front end of the cassette holder 2, and is supported by a return spring. 16, it is rotated clockwise.

Note that the cassette insertion port 4 is closed by the first lid 12 becoming vertical as shown in FIG.
Further clockwise rotation of the first lid 12 is restricted by being inserted into the hole 17 provided in the hole 17 and abutting against the front end of the hole 17.

The second i13 is rotatably connected to a fulcrum shaft 18 installed horizontally between the support plates 5, and is configured to be opened and closed in conjunction with the movement of the cassette holder 2 by a drive mechanism to be described later. ing.

In this section, the opening and closing operation of the first lid 12 will be explained.

First, before the cassette is inserted, the second lid 13 is rotated to a position above the cassette holder 2, as shown in FIG. 2A, and the cassette insertion opening 4 is closed by the first lid 12.

Next, when the cassette 1 is inserted into the cassette holder 2 from the cassette insertion opening 4 as shown in FIG. The first lid 12 is opened by rotating clockwise.

After this, when the cassette 1 is pulled into the front operation panel 3 as shown in FIG. 2C by the cassette mounting operation by the cassette holder 2 described above, the second i13 moves clockwise in conjunction with the movement of the cassette holder 2. Then, the cassette insertion opening 4 is closed as shown in the figure.

Further, when the cassette is ejected by the cassette holder 2 described above, first the second lid 13 is moved back to the position shown in FIG. 2B in conjunction with the movement of the cassette holder 2, and then the cassette 1
is returned to the cassette insertion slot 4, resulting in the state shown in FIG. 2B.

Thereafter, when the cassette 1 is pulled out of the cassette insertion port 4, the first lid 12 is rotated clockwise by the return spring 16 to close the cassette insertion port 4 as shown in FIG. 1A.

Next, the opening/closing mechanism of the second lid 13 will be explained with reference to FIGS. 3A to 4.

First, the link 22 engaged with the pin 20 provided at one end of the second i13 through the long hole 21 is extended downward,
A lever 24, which is pivotally attached to its lower end via a pin 23, is rotatably attached to the support plate 5 via a fulcrum shaft 25.

The lever 24 is urged to rotate clockwise in FIG. 3A by a return spring 26, and comes into contact with a stopper 27 provided on the support plate 5, thereby restricting its rotation in the clockwise direction.

In addition, when the second lid 13 is in a vertical shape and closes the cassette insertion slot 4 as shown in FIG. 2C, the second lid 13 is closed.
The lid stopper 29 is placed close to the rear of one end of the M2S.
is provided.

This lid stopper 29 is rotatably attached to the support plate 5 via a fulcrum shaft 30, and the third A,
In the figure, it is rotated clockwise.

Note that this lid stopper 29 is brought into contact with a stopper 32 provided on the support plate 5, and its rotation in the clockwise direction is restricted.

At the tip of the lid stopper 29, there is a projection 34 that faces a projection 33 provided at one end of the second lid 13 from the rear side, and a projection provided at a position biased toward the upper end of the link 22. 35 is provided with a protrusion 36 facing from the lower side thereof.

Note that the lever 24 is arranged to cross the lower end portion of the one guide 198a, and the roller shaft 37 of one guide roller 7a is extended laterally, and the lever 24 is arranged to cross the lower end portion of the one guide 198a. When descending (moving), the roller shaft 37 is configured to come into contact with the lever 24 and push it downward.

In this section, the opening and closing operation of the second lid 13 will be explained.

First, before the cassette is inserted, the second lid 13 is rotated to a position above the cassette holder 2, as shown in FIG. 3A.

Next, after the cassette 1 is inserted into the cassette holder 2 described above, the cassette holder 2 is inserted into the guide grooves 8a, 8b, 8c.
The waist strap 3B starts to move along the guide groove 8a and is lowered (moved) to the cassette mounting position as shown in the figure.At this time, the roller shaft 37 is also moved along the guide groove 8a.

When the roller shaft 37 reaches the position indicated by the imaginary line in FIG. 3B, the roller shaft 37 comes into contact with the lever 24, and the lever 24 is moved counterclockwise by the roller shaft 37 against the return spring 26. Rotation starts.

Then, the link 22 is pulled downward, and as the pin 20 descends, the second lid 13 begins to move downward by rotating clockwise about the fulcrum shaft 18.

When the roller shaft 37 reaches the position indicated by the dotted line in FIG. 3B, the second lid 13 finishes descending by rotating clockwise, and the second lid 13 is vertically moved as shown in FIG. 3B. It becomes like
The cassette insertion port 4 is closed.

At this time, the second lid 13 comes into contact with the back surface of the front operation panel 3 and is stopped.

Also, at this time, the protrusion 33 of the second M2S is connected to the lid stopper 29.
passes under the protrusion 34 and is moved to a position in front of the protrusion 34.

On the other hand, the roller shaft 37 is further lowered and finally reaches the position indicated by the solid line in FIG. 3B, and at this point the operation of mounting the cassette 1 to the cassette mounting position by the cassette holder 2 is completed.

When the roller shaft 37 reaches the position indicated by the dotted line in FIG. It starts rotating counterclockwise.

At this time, since the link 22 is lowered with respect to the pin 20 of the second lid 13 in a state where it is released by the elongated hole 20, the vertical state of the second lid 13 does not change.

When the roller shaft 37 reaches the position shown by the solid line in Fig. 3B, the lid stopper 29 is pushed down to the position shown by the solid line in Fig. 3B, and its protrusion 34 moves to the back side of the protrusion 33 of the second M2S. be done.

With the above steps, the second M2S closing operation linked to the movement of the cassette holder 2 is completed.

At this time, since one cassette is inserted into the front surface 13a of the second M2S, do not insert the next cassette.

There is a display prohibiting insertion of the next cassette such as ``Yo''.
This display is displayed on the cassette insertion slot 4.

Therefore, the operator can recognize from this display that the next cassette cannot be inserted.

On the other hand, if the operator mistakenly tries to insert the next cassette into the cassette insertion slot 4 and pushes the second lid 13 from the left side in FIG. 29 and prevents the second lid 13 from rotating counterclockwise.

That is, the second i13 is stopped by the lid stopper 29 to prevent the second lid 13 from being opened unexpectedly.

When the cassette is ejected by the cassette holder 2 described above, first, while the roller shaft 37 is raised from the position shown by the solid line to the position shown by the dotted line in FIG. It is returned to the position shown in Figure 3A.

During this time, the lever 24 is also rotated clockwise by the return spring 26, and the link 22 is pushed up, but at this time, the pin 20 only moves relatively downward within the elongated hole 21, and No rotational force is given.

The lever 24 is operated by the return spring 26 while the roller shaft 37 is raised from the dotted line position to the phantom line position in FIG. 3B.
When the pin 2 is rotated clockwise, the link 22
0 is pushed up, and the second lid 13 is moved upward by rotation in the counterclockwise direction.

When the roller shaft 37 reaches the position indicated by the imaginary line in FIG. 3B, the lever 24 is returned to the position shown in FIG. 3A, and the second lid 13 is pushed back to the position shown in FIG. 3A.

After this, the cassette 1 is returned to the cassette insertion slot 4 as described above.

The embodiments of the present invention have been described above.
The structure of the lid and the second lid and the opening/closing mechanism are not limited to those shown in the drawings, and can be changed to other effective structures.

Further, the present invention does not limit the drive mechanism of the cassette holder and the method of moving the same.

As described above, the present invention is such that when the cassette holder is moved back to the cassette insertion opening, the cassette insertion opening is closed by the first lid, and when the cassette holder is moved back to the cassette loading position, the cassette insertion opening is closed by the second lid. Since the cassette insertion opening is closed and the first and second lids alternately close the cassette insertion opening, the cassette insertion opening can be closed before the cassette is inserted and after the cassette is drawn into the front panel. In both cases, the cassette insertion port can be kept closed at all times.

Therefore, it is possible to prevent the inside of the device from being seen through the cassette insertion slot, or from accidentally inserting a foreign object or the next cassette from the cassette insertion slot, especially when the cassette is pulled inside the front panel. As a result, a cassette attachment/detachment device with good appearance and high safety can be obtained.

Moreover, according to the present invention, the first lid is held by the cassette holder, and the first lid is pushed open by inserting the cassette into the cassette holder through the cassette insertion opening. The held second lid is configured to be automatically opened and closed by an opening/closing mechanism driven by the reciprocating movement of the cassette holder between the cassette insertion opening and the cassette mounting position, so the operator can When inserting the cassette into the cassette holder through the mouth, it is only necessary to push open the first lid, and there is no need to open the second lid or the lid.

Therefore, the operator can perform the cassette insertion operation very lightly and easily.

Furthermore, when the operator inserts the cassette, the second lid is not closed at all, and the second lid is not closed automatically until the cassette holder is moved from the cassette insertion slot to the cassette loading position after the cassette is inserted. Since the lid is closed, there is no danger of fingers being accidentally caught by the second lid due to the second lid being carelessly closed when the operator inserts the cassette. The cassette insertion operation by the operator can always be carried out safely, and the operability is very good.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a cassette attachment/detachment device for a front-operated VTR.
Figures A to 2C are partially cutaway side views explaining the structure and operation of the first lid part in the lid device, Figure 3A and Figure 3.
FIG. B is a side view illustrating the structure and operation of the second lid portion of the lid device, and FIG. 4 is a perspective view of the second drive mechanism portion. In addition, in the symbols used in the drawings, 1... cassette, 2... cassette holder, 3...
...Front operation panel, 4...Cassette insertion slot,
12...first lid, 13...second lid.

Claims (1)

[Scope of utility model registration request] In the cassette attachment/detachment device, the cassette is inserted into the cassette holder through the cassette insertion opening provided on the front panel, and the cassette is pulled into the cassette attachment position inside the front panel by movement of the cassette holder to be attached. A first lid configured to be held by the cassette holder to open and close the cassette insertion opening is provided, and the first lid is pushed open when the cassette is inserted into the cassette holder from the cassette insertion opening. and a second lid configured to be held within the front panel and configured to open and close the cassette insertion opening, the second lid being driven by reciprocating movement between the cassette insertion opening of the cassette holder and the cassette mounting position. An opening/closing mechanism is provided that opens and closes the second lid using the first lid, and when the cassette holder is moved back to the cassette insertion slot, the first lid closes the cassette insertion slot, and the cassette holder moves from the cassette insertion slot to the cassette mounting position. 1. A lid device for a cassette attachment/detachment device, characterized in that when the opening/closing mechanism is moved, the second lid is driven to open and the second lid closes a cassette insertion opening.