JP2508031Y2 - Tape cassette loading device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a magnetic recording / reproducing apparatus using a tape cassette such as a video tape recorder or an audio tape recorder, and particularly, to prevent mechanical destruction of the cassette storage table. It is characterized by the configuration.

2. Description of the Related Art A conventional tape cassette loading device will be described with reference to the drawings. FIG. 3 is an exploded perspective view of the tape cassette loading device, and FIG. 4 is a side view thereof.

In the figure, reference numeral 11 denotes a cassette storage table having an opening portion through which a tape cassette 21 can be inserted and removed, and a front edge portion 21a of the tape cassette 21 is inserted in the direction of arrow A to reach the switch mounting portion 11a. As a result, the first switch 15 provided on the cassette storage base 11 is pressed. Then, by the first switch 15, the lead wire
A signal for rotating the motor 2 as a drive source in the forward direction is issued to the control box 6 through 8a and 8b, and the drive current is transmitted from the control box 6 to the motor 2 through the lead wires 7a and 7b. The turning force of the motor 2 is transmitted to the first drive gear 3a through the worm gear 2a directly connected to it,
A second drive gear 3b coaxially fixed to the drive gear 3a
The sliding gear 4 is moved in the direction of arrow D via.

By the way, in the conventionally known elevator mechanism 10 which is a means for supporting the cassette housing 11, the same supporting arms 10a and 10b are provided on both sides of the base body 1 so as to support the cassette housing 11. . The support arms 10a and 10b are rotatably connected at their central portions, and both ends thereof are configured as follows. That is, in both support arms 10a, a pin 10c provided at one end thereof is provided with a long hole 11b provided in the cassette storage base 11.
Slidably engaged with. The other end is fixed to both ends of a support shaft 14 rotatably supported by the end 1a of the base body 1, and the support arms 10a are rotated in synchronization with each other on both sides of the base body 1. In addition, the engaging hole 10d formed in the one support arm 10a is slidably engaged with the convex portion 5 formed in the sliding gear 4. Also, both support arms 10b,
A pin 10e is rotatably supported by a cassette 10 on one end thereof, and a sliding pin 10f provided on the other end is slidably engaged with an opening 1b of the base 1 at the other end. Has been done.

In the tape cassette loading device configured as described above, the first switch 15 is pressed by inserting the tape cassette 21 into the regular position of the cassette housing base 11, and the rotational force of the motor 2 slides. The gear 4 is moved in the direction of arrow D, and with this movement, a counterclockwise turning force is generated in the support arm 10a. Therefore, the elevator mechanism 10 descends in the direction of the arrow C, and moves the cassette storage table 11 from the first position where the tape cassette 21 can be inserted or taken out to the second position (not shown) which engages with the reel table. Of.

On the other hand, when the cassette storage base 11 is intentionally moved from the first position to the second position without inserting the tape cassette 21 into the cassette storage base 11, a down switch provided on the exterior panel 20 is used. By pushing 19 manually, a signal for normally rotating the motor 2 is issued from the lead wires 9a and 9b to the control box 6, and the cassette storage base 11 is moved in the same manner as described above.

It should be noted that the cassette storage base 11 is placed in the first position
Although not shown, for example, a switch provided on the exterior panel 20 reversely drives the motor 2 to return to the position of 1.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the conventional tape cassette loading device configured as described above, when the tape cassette 21 is imperfectly inserted into the cassette storage base 11 at the time of use, the down switch is erroneously erroneously operated. 19 was sometimes pressed.
At that time, with the above-described configuration, it is not possible to detect that the tape cassette 21 is imperfectly inserted,
There is a problem that the tape cassette 21 cannot be engaged with the reel base at a proper position and the mechanism is destroyed.

Further, when it is desired to intentionally move the cassette storage base 11 without inserting the tape cassette 21, the down switch 19 on the exterior panel 20 must be searched for each time, which is troublesome to handle.

Means for Solving the Problems In order to solve the above problems, the tape cassette loading device of the present invention has the following configuration. That is, a means for movably supporting the cassette storage base between a first position where the tape cassette can be inserted and removed and a second position where the tape cassette engages with the reel base, and the movement thereof. Magnetic recording / reproducing comprising drive means for performing the operation and a first switch for driving the drive means by inserting the tape cassette into the regular position in the cassette storage table located at the first position. In the device, a second switch that drives the drive means by pressing an upper plate that is rotatably provided on the cassette storage base, and a part of the tape cassette is inserted into the cassette storage base. A third switch for disabling the second switch is provided.

With such a configuration, when the tape cassette is incompletely inserted, the cassette storage base does not move from the first position to the second position, so that the mechanism can be prevented from being destroyed.

Further, in order to intentionally move the cassette storage table without storing the tape cassette, the movement can be started by simply pressing the upper plate, so that the handling becomes very easy.

Embodiment Next, an embodiment of the present invention will be described. FIG. 1 is an exploded perspective view of a tape cassette loading device according to an embodiment of the present invention, and FIG. 2 is a side view of the tape cassette loading device. The same components as those of the conventional tape cassette loading device are designated by the same reference numerals, and the description thereof will be omitted. The parts different from the conventional configuration will be described below.

First, on the upper part of the cassette storage base 11, the upper plate rotation fulcrum pin 18 provided on the side portion of the cassette storage base 11 is used as a rotation support shaft, and a turning force is applied counterclockwise by the spring body 13. That is, the upper plate 12 is provided. The turning position of the upper plate 12 due to this turning force is a pin 10c provided at one end of the support arm 10a of the elevator mechanism 10 as shown in FIG.
The upper plate opening amount regulating portion 12a is regulated by abutting on the upper plate. That is, the upper plate 12 is in a state in which the tape cassette insertion opening portion of the cassette storage base 11 is enlarged when the cassette storage base 11 is in the first position, and is enlarged when it is in the second position. The opened opening is in a closed state.

Further, the second switch 16 and the third switch 17 as described below are provided in place of the switch 19 provided on the exterior panel 20 in the related art. That is, the second
The switch 16 is OFF when the cassette storage base 11 is located at the first position and the upper plate 12 is in a state where the opening of the cassette storage base 11 is enlarged, and the upper plate 12 is pressed, It is arranged laterally of the cassette storage base 11 so that it is turned on when pressed by the switch pressing portion 12b.
The third switch 17 is ON when the tape cassette 21 is not inserted in the cassette storage stand 11,
The tape cassette (21) is arranged close to the opening of the cassette storage base (11) so that the tape cassette (21) is pushed off by the upper surface of the tape cassette (21) and turned off even when a small amount of the tape cassette is inserted.

Second switch 16 and third switch as described above
Connect 17 in series and check the ON or OFF state with lead wire 9
The motors 2 are configured to be transmitted to the control box 6 by a and 9b.

The operation of the tape cassette loading device configured as described above will be described below.

First, when only the cassette storage base 11 is moved from the first position to the second position without inserting the tape cassette 21, the motor 2 is operated by lightly pressing the upper plate 12 in the direction of arrow B. It is driven and moved. This is because the second switch 16 is turned on by being pressed by the switch pressing portion 12b of the upper plate 12, and the third switch
Since 17 is ON, control box 6 and lead wire 9
This is because the circuit constituted by a and 9b is closed and a normal rotation signal is issued from the control box 6 to the motor 2.

Next, when the tape cassette 21 is imperfectly inserted into the cassette storage table 11, even if the upper plate 12 is erroneously pressed in the direction of arrow B, the cassette storage table 11 is not moved. This turns off the third switch 17 when the tape cassette 21 is inserted into the cassette storage base 11 even in a small amount.
The control box 6 and the lead wires 9a and 9b.
This is because the circuit constituted by is opened regardless of whether the second switch 16 is ON or OFF. Therefore, unlike the conventional example, the cassette storage base 11 does not move from the first position to the second position in a state where the tape cassette 21 is incompletely stored, and the mechanism of the tape cassette loading device is destroyed. Can be prevented.

In addition, when the tape cassette 21 is completely inserted into the regular position of the cassette storage base 11, the first cassette is used as in the conventional example.
When the switch 15 is pressed, the motor 2 is driven and the movement is started.

As described above, according to the present invention, the second switch driven by the upper plate rotatably provided on the upper part of the cassette housing and the tape cassette is inserted into the cassette housing. A third for disabling the second switch
By providing this switch, the following effects can be obtained.

First, when the tape cassette is imperfectly inserted into the cassette storage base, the cassette storage base cannot be moved even if the upper plate is pressed, so the mechanism destruction caused by the incomplete insertion of the tape cassette is prevented. be able to.

If you want to intentionally move the cassette storage base without inserting the tape cassette, the cassette storage base should be moved in a manner that responds to human intuitive operation by gently pressing the top plate provided on the cassette storage base. Can be moved, which simplifies handling.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a tape cassette loading device according to an embodiment of the present invention, FIG. 2 is a side view of the same tape cassette loading device, and FIG. 3 is an exploded perspective view of a conventional tape cassette loading device. FIG. 4 is a side view of the tape cassette loading device. 1 ... Base, 2 ... Motor, 3a, 3b ... Drive gear, 4 ...
... Sliding gear, 6 ... Control box, 10 ... Elevator mechanism, 11 ... Cassette storage stand, 12 ... Upper plate, 15 ... First switch, 16 ... Second switch, 17 ... 3 switches, 21 ... Tape cassette.

Claims (1)

(57) [Scope of utility model registration request] 1. A cassette storage base is provided with a first position where a tape cassette can be inserted and removed through an opening formed on one side surface thereof, and a second position where the tape cassette engages with a reel base. Means for movably supporting the space, driving means for carrying out the movement, and driving the driving means by inserting the tape cassette into the regular position in the cassette storage table located at the first position. A magnetic recording / reproducing apparatus provided with a first switch that is provided above the cassette storage table so that an end side located on the opening side can rotate in a direction of opening and closing the opening. An upper plate, and a second switch provided on the cassette storage base so as to be in an ON state for driving the driving means when the upper plate is pressed in a direction to close the opening. Provided at a position close to the opening of the cassette housing base so that when the tape cassette is partially inserted into the opening, the tape cassette turns off the second switch. A tape cassette loading device having a third switch.