JPH05988Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a cassette loading device used in a magnetic recording/reproducing device, and more particularly to a cassette holding mechanism provided in the cassette loading device.

Prior Art Conventionally, a cassette loading device for loading a cassette into a magnetic recording/reproducing device has been developed, for example, by
A cassette loading device A shown in Japanese Patent No. 177053 and FIG. 4 is known.

As shown in the figure, the cassette loading device A is provided with a cassette holder 2 for holding a cassette 1 in order to load the cassette 1 into a magnetic recording/reproducing device (not shown).

The cassette 1 inserted into the cassette holder 2 from the direction of the arrow 4 is held between the cassette press spring 3 and the bottom plate of the cassette holder 2 by the cassette press spring 3 provided at the top of the cassette holder 2. .

Further, the pin 7 that is pivoted on the side surface of the cassette holder 2 is fitted into the cam groove 9 of the drive lever 8 and the L-shaped cam groove 6 formed on the side plate 5 of the cassette loading device A at the same time, so that the drive lever 8 is arrow 1
When the cassette holder 2 is rotated in the direction of 0, the cassette holder 2 moves from the cassette 1 insertion position (the position for inserting the cassette shown in Fig. 4) to the cassette loading position (the cassette shown in Fig. 3 described later). transported to the position where it is loaded into the device). 11 is a detection switch for detecting insertion of cassette 1;
The drive lever 8 is rotated in response to future signals.

Problems with the Prior Art However, in the conventional cassette loading device A, the operator inserts the cassette 1 into the cassette holder 2 at the cassette insertion position against the pressing force of the cassette presser spring 3, and the cassette 1 must be loaded into a magnetic recording and reproducing device,
If the operability of the cassette in the cassette holder is impaired due to the pressing force of the cassette presser spring 3, or if the cassette 1 is incompletely inserted into the cassette holder 2 when the pressing force of the cassette presser spring 3 is large, etc. The cassette loading device A sometimes started operating.

Purpose of the invention The present invention was devised in view of the above-mentioned circumstances, and improves the operability of the cassette in the cassette holder by changing the cassette holding mechanism using the cassette presser spring, and makes it possible to keep the cassette in the cassette holder at all times. The object of the present invention is to provide a cassette loading device that can be inserted completely and in a normal state.

Composition of the Invention In order to achieve the above object, the main means adopted by the present invention is that a cassette holder for holding a cassette to be loaded into a magnetic recording/reproducing apparatus is arranged at the cassette insertion position and the loading position. In the cassette loading device, a cassette holding member is disposed above the cassette holder and elastically presses the cassette against the cassette holder by contacting the upper surface of the cassette. The mechanism has a mechanism that operates in conjunction with the cassette holding member to prevent the cassette holder from moving at the cassette insertion position while separating the cassette holding member from the top surface of the cassette, and a state in which the cassette holding member comes into contact with the top surface of the cassette. This is a cassette loading device comprising a driving cam mechanism.

Embodiments Hereinafter, embodiments embodying the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

It should be noted that the following example is an example embodying the present invention, and is not intended to limit the technical scope of the present invention.

Here, FIG. 1 is a schematic side view of a cassette loading device according to an embodiment of the present invention when a cassette is inserted, and FIG.
The figure is a schematic side view of the same when the cassette holding member is activated, and FIG. 3 is a schematic side view of the same when the cassette is loaded.

In the cassette loading device B according to this embodiment, as shown in FIGS.
A cassette holder 13 for holding a cassette holder 13 is provided.

At the upper side of the cassette holder 13, there is an L-shaped cassette holding lever 14 which has an abutting part (cassette holding member) 14a at one end and a locking part 14b at the other end, and is swingable about a shaft 15. It is attached to the shaft. This cassette presser lever 14 is
6 in the clockwise direction (the abutting portion 14a is in the cassette 1
2) is constantly biased to swing in the direction of contact with the upper surface.

When the cassette holder 13 is in the cassette insertion position (see FIG. 1), the cassette holding lever 14 is connected to the end surface of an outer diameter cam 21a provided at the tip of a drive lever 21 (to be described later) and the locking portion 14b. When the abutting portion 14a is engaged with the
is held at a position spaced apart from the top surface of the cassette 12. This allows the cassette insertion position (first
Inserting the cassette 12 into the cassette holder 13 (see figure)
can be attached and detached without any resistance.

On the side surface of the front end of the cassette holder 13 in the cassette insertion direction (arrow 17), there is an L-shaped cam groove 19 carved in the side plate 18 of the cassette loading device B between the cassette insertion position and the loading position. A pin 20 is rotatably fitted into the cassette holder 13 and is pivotally attached thereto for guiding and moving the cassette holder 13 between a cassette insertion position and a loading position.

The pin 20 is also slidably fitted into a cam groove C of the drive lever 21, which is rotatably attached to the side plate 18 via a shaft 22.

In this embodiment, the drive lever 21 and the pin 20 constitute a moving mechanism.

The cam groove C is formed in the cam groove 19 of the pin 20 in order to release the engagement between the end surface of the outer diameter cam 21a and the locking portion 14b when the drive lever 21 starts rotating in the direction of the arrow 26 at the cassette insertion position. The cassette C is held in the cassette holder 13 by the action of the blocking portion 23 formed in an arc shape around the shaft 22 and the cassette holding lever 14 in order to rotate the drive lever 21 while preventing the drive lever 21 from sliding inside. and a drive portion 24 formed approximately in the radial direction to slide and drive the pin 20 along the cam groove 19 as the drive lever 21 rotates in a completely held state. There is. In this case, the above pin 2
0, the cam groove C provided in the drive lever 21, the outer diameter cam 21a, etc. constitute a cam mechanism.

A detection switch 25 is attached to the upper inner side of the cassette loading device B. The detection switch 25 detects insertion of the cassette 12 into the cassette holder 13 by engaging with the upper surface of the front end of the cassette 12 in the cassette insertion direction.

Cassette loading device B configured as described above
First, when the cassette holder 13 is in the cassette insertion position (see Figure 1), the operator inserts the cassette 12 into the cassette holder 13.
Insert into.

At this time, the contact portion 14 of the cassette presser lever 14
a is the locking portion 14b and the outer diameter cam 2 of the drive lever 21
Since the cassette 12 is held at a position apart from the upper surface of the cassette 12 by the action of the cassette 1a, the resistance force when inserting the cassette 12 into the cassette holder 13 is extremely small.

Next, remove the cassette holder 1 of the cassette 12.
3 is detected by the detection switch 25, the drive lever 21 is rotationally driven in the direction of the arrow 26 by a motor (not shown).

At this time, since the pin 20 of the cassette holder 13 slides along the blocking portion 23 of the cam groove C, the cassette holder 13 remains held at the cassette insertion position (the position shown in FIG. 1).

Therefore, the locking portion 14b of the cassette presser lever 14 remains blocked from moving the cassette holder 13.
Since the engagement between the drive lever 21 and the end surface of the outer diameter cam 21a is released, the contact portion 14a comes into contact with the upper surface of the cassette 12 by the action of the spring 16.
The cassette 12 is pressed onto the upper surface of the bottom plate of the cassette holder 13. As a result, the cassette 12
is completely held in the cassette holder 13.

When the drive lever 21 is further rotated in the direction of the arrow 26, the pin 20 moves from the blocking part 23 of the cam groove C to the drive part 24.
It is pushed by the cam groove 19 and is driven to slide along the cam groove 19 (see FIG. 2). As a result, the cassette holder 13 is guided to the cassette loading position (see FIG. 3).

As described above, in the cassette loading device B of the present invention, when the cassette holder 13 is in the cassette insertion position, the contact portion 14a of the cassette presser lever 14 is held at a position spaced apart from the top surface of the cassette 12. , the above cassette holder 1
The resistance when inserting the cassette 12 into the cassette holder 13 is extremely small, and the operability of the cassette 12 in the cassette holder 13 is dramatically improved compared to the conventional cassette loading device A (see FIG. 4).

Further, when the cassette 12 moves toward the cassette loading position, the cassette 12 is completely held in the cassette holder 13 by the action of the abutting portion 14a.

Effects of the Invention As described above, the present invention provides a cassette loading device equipped with a moving mechanism for moving a cassette holder for holding a cassette to be loaded into a magnetic recording/reproducing device between a cassette insertion position and a loading position. A cassette holding member is disposed on the top of the cassette holder, and the cassette holding member is arranged in contact with the top surface of the cassette to elastically press the cassette against the cassette holder, and the moving mechanism is provided with a cassette holding member that works in conjunction with the cassette holding member to hold the cassette. The cassette holding member is provided with a cam mechanism that prevents movement of the cassette holder at the insertion position and drives the cassette holding member between a state in which it is separated from the top surface of the cassette and a state in which it comes into contact with the top surface of the cassette. Since the device is a cassette loading device, the cassette can be easily and completely inserted into the cassette holder without impairing the operability of the cassette when the cassette holding member is not in operation.

Furthermore, the cassette is completely held in the cassette holder in a normal state by the action of the cassette holding member, and then moved together with the cassette holder, so that the cassette can be held without being disturbed during movement. can be reliably loaded into a magnetic recording/reproducing device.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a cassette loading device according to an embodiment of the present invention when a cassette is inserted, FIG. FIG. 4 is a schematic side view of a conventional cassette loading device when a cassette is inserted. Explanation of symbols, 12...Cassette, 13...Cassette holder, 14...Cassette presser lever, 1
4a... Contact part, 14b... Locking part, 16... Spring, 18... Side plate, 19... Cam groove, 20... Pin, 21... Drive lever, 21a... Outer diameter cam,
23...Blocking part, 24...Driving part, B...Cassette loading device, C...Cam groove.

Claims (1)

[Scope of utility model registration request] In a cassette loading device comprising a moving mechanism for moving a cassette holder that holds a cassette to be loaded into a magnetic recording/reproducing device between a cassette insertion position and a loading position, the cassette holder has a cassette holder which is attached to the upper part of the cassette holder and which abuts the upper surface of the cassette. A cassette holding member is disposed for elastically pressing the cassette against the cassette holder, and the moving mechanism is interlocked with the cassette holding member to prevent movement of the cassette holder at the cassette insertion position. A cassette loading device comprising a cam mechanism that drives the cassette holding member between a state in which it is separated from the top surface of the cassette and a state in which it comes into contact with the top surface of the cassette.