JPH0766594B2 - Cassette type recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cassette type recording / reproducing apparatus for a position detecting mechanism of a cassette (for example, a cassette containing a magnetic tape, a magnetic disc, an optical disc). It is about improvement.

[Conventional technology]

A conventional cassette type recording / reproducing apparatus of this type is shown in FIGS.
The figure will be described. FIG. 5 is a plan view of an essential part when the cassette is inserted, FIG. 6 is a plan view of an essential part when the cassette is inserted and further pushed, and FIG. 7 is a plan view of an essential part when the cassette is attached. In the figure, (1) is a cassette, (2) is a cassette holder for accommodating and holding the cassette (1), (3) is a guide pin fixed to the cassette holder (2),
(4) is a base plate having guide holes (not shown) for guiding the guide pin (3) on both sides, (5) is a lever having an arc portion (5A), and (6) is a rotation center of the lever (5). And is provided on the lower side of the upper surface of the base plate (4).
Reference numeral (7) is a return spring for urging the lever (5) to the position shown in FIG. 5, which is hung between the base plate (4) and the lever (5). Reference numeral (8) is a start switch arranged near the corner (5a) of the arc portion (5A) of the lever (5).

Next, the operation will be described. When the cassette (1) is inserted into the cassette holder (2), the cassette (1) comes into contact with the lever (5) as shown in Fig. 5, and the cassette (1) is not switched when the start switch (8) is not switched. It is held in the cassette holder (2). Then, when the cassette (1) is manually pushed in the direction of the arrow (A) with a stronger force than when the cassette is inserted in the state shown in FIG. 5, the cassette (1) moves the lever (5) in the direction of the arrow (B). The start switch (8) is switched as shown in FIG. When this switching is detected, another drive source starts driving, the cassette holder (2) is moved, and the cassette (1) is moved to a predetermined cassette mounting position shown in FIG. Also, in this device, by pressing a performance start button (not shown), the cassette (1)
It is now possible to start driving the drive source without pressing it by hand.

[Problems to be solved by the invention]

In the conventional cassette type recording / reproducing apparatus as described above, since only the start switch (8) is provided, the cassette (1) is caught in the cassette holder (2) for some reason, and the cassette is completely moved to the proper position. Even if the cassette (1) is held in the cassette holder (2) without being inserted into the cassette, the drive source is driven to move the cassette holder (2) when the performance start button is pressed. In addition, the cassette (1) interferes with the other parts of the device and the operation is not smoothly performed, and the cassette (1) and the device are damaged.

The present invention has been made to solve such a problem.By detecting the position of the cassette in the cassette holder, even if the cassette is not completely inserted into the cassette holder, the cassette can be pushed in. It is another object of the present invention to provide a cassette type recording / reproducing apparatus in which the driving by the drive source does not start even if the performance start button is pressed and damage to the cassette or the apparatus can be prevented.

[Means for solving problems]

The cassette type recording / reproducing apparatus according to the present invention is a lever which is biased to an initial position and abuts and drives a cassette in a cassette holder to rotate from the initial position against the biasing force, and a rotation of the lever. It is provided with an insertion determination switch and a start determination switch that switch according to the corner.

[Action]

In the present invention, the position of the cassette in the cassette holder can be detected by the insertion determination switch and the start determination switch that are switched according to the rotation angle of the lever that is abutted on the cassette. It is possible to determine whether to start driving the drive source.

Example of Invention

An embodiment of the present invention shown in FIGS. 1 to 4 will be described below. Fig. 1 is a plan view of the main part before inserting the cassette,
FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of an essential part when the cassette is inserted, and FIG. 4 is a plan view of an essential part when the cassette is further pushed in after the cassette is inserted. Alternatively, the corresponding parts are designated by the same reference numerals and the description thereof is omitted.

In the figure, (9) is a lever having arc portions (9A) and (9B), which is biased by a return spring (7) to the initial position shown in FIG. 1 and FIG. Reference numeral (10) is an insertion determination switch arranged near the corner (9a) of the arc portion (9A) of the lever (9), and determines whether or not the cassette (1) is completely inserted in the cassette holder (2). It is a thing.
Reference numeral (11) is a start determination switch which is arranged at a position slightly apart from the corner (9b) of the arc portion (9B) of the lever (9), in a state where the cassette (1) is completely inserted in the cassette holder (2). It is to determine whether or not it has been pushed in.

Next, the operation will be described. 1 and 2, when the cassette (1) is inserted into the cassette holder (2) in the direction of the arrow (C), the cassette (1) collides with the lever (9) at the end of the insertion, and the lever (9) ) Is slightly rotated in the direction of the arrow (D) against the urging force of the return spring (7) to be inserted into the cassette insertion position shown in FIG. At this time, since the lever (9) switches the insertion determination switch (10) as shown in FIG. 3, it is detected that the cassette (1) is completely inserted into the cassette holder (2). Then, when the cassette (1) is pushed in the direction of the arrow (C) by hand with a stronger force than when the cassette is inserted in the state shown in FIG. 3, the cassette (1) moves the lever (9) in the direction of the arrow (D). Since it is rotated further to the start determination switch (1
1) is switched as shown in FIG. Detecting this switching, another drive source starts driving,
Move the cassette holder (2) to a predetermined cassette mounting position.

In the above embodiment, the cassette (1) is caught in the cassette holder (2) for some reason, and the position of the cassette (1) with respect to the cassette holder (2) is not inserted to the proper position, that is, the insertion determination switch (10). )
In the state in which is not switched, the drive source is not driven even if the user presses the performance start button (not shown) provided on the device. In addition, the cassette (1) is caught in the cassette holder (2) for some reason, and the cassette (1) is pushed further firmly in a state where the position of the cassette (1) with respect to the cassette holder (2) is not inserted to the proper position. However, the lever (9) does not rotate to the predetermined position,
Since the start judgment switch (11) is not switched, the drive source is not driven. That is, unless the cassette (1) is completely inserted into the cassette holder (2), the cassette holder (2) does not move.

Further, in the above embodiment, for example, a switch for the final check for detecting the position of the cassette at the cassette device position may be added as the third switch, or a switch for other purposes may be appropriately added.

〔The invention's effect〕

As described above, since the position of the cassette in the cassette holder can be detected as described above, if the cassette is not completely inserted in the cassette holder, the drive source can be pushed even if the cassette is pushed or the play start button is pushed. There is an effect that it is possible to prevent the cassette and the device from being damaged because the driving by the drive does not start.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of an essential part before inserting a cassette, FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of an essential part when inserting a cassette, and FIG. FIG. 5 is a plan view of the main part when the cassette is inserted and further pushed, FIG. 5 is a plan view of the main part when the cassette is inserted in the conventional device, and FIG. 6 is a plan view of the main part when the cassette is further pushed in. The figure is a plan view of an essential part when the cassette is attached. In the figure, (1) is a cassette, (2) is a cassette holder, (9) is a lever, (10) is an insertion determination switch,
(11) is a start determination switch. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A cassette holder for accommodating a cassette and moving between a cassette insertion position and a cassette mounting position; a cassette holder provided separately from the cassette holder, biased to an initial position, and within the cassette holder. A lever that contacts the cassette and rotates from the initial position against the biasing force, and switches according to the rotation angle of the lever, and when the start button is pressed, the cassette holder is driven by the drive source. An insertion determination switch that determines whether to move to the cassette mounting position, and a start determination that switches according to the rotation angle of the lever, and when it switches, moves the cassette holder to the cassette mounting position by a drive source. A cassette type recording / reproducing device equipped with a switch.