JPH0445150Y2 - - 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 specifically, a mechanism for lowering a cassette together with a cassette garage and loading the cassette into the magnetic recording/reproducing device. It is related to.

BACKGROUND OF THE INVENTION Conventionally, when loading a cassette into a magnetic recording/reproducing apparatus, for example, a cassette loading apparatus A shown in FIG. 4 has been used.

As shown in the figure, the cassette loading device A is provided with a cassette garage 2 for holding a cassette 1 in order to load the cassette 1 into a magnetic recording/reproducing device.

A lid 6 is attached to the front end of the cassette body 3 of the cassette 1 in the sliding direction (arrow 4) of a slider 10 (described later) so as to be openable upward. Also,
A locking pawl (not shown) for locking the lid 6 is slidably pivoted on the inside of the side plate of the cassette body 3.

The cassette garage 2 includes a pawl 9 for positionally regulating the cassette 1 in the sliding direction of the slider 10, and cassette guides 16a, 16b for regulating the position in the lateral direction (see FIG. 5).
By engaging with the locking claw of the cassette 1,
It has a lock release pawl 14 which is slidable in the sliding direction of the slider for releasing the engagement between this locking pawl and the lid 6. The above cassette guide 16
The insides 16c and 16d of a and 16b are cassette 1
It is formed into an inclined surface so that it can be easily attached to the cassette garage 2.

Furthermore, the cassette garage 2 has links 11 and 12.
A link mechanism (elevating link mechanism) B configured in an X-shape, in which the
A positioning pin 38 of the magnetic recording/reproducing apparatus main body 37, which will be described later, is placed on the slider 10, which will be described later, to the cassette loading position (the end position of the movement of the cassette 1 in the sliding direction (horizontal direction), which will be described later). and the cassette stay 39 (position for loading).

The slider 10 is formed with a cassette guide portion 15 for positioning the cassette 1 together with the claws 9, and further elastically urges the cassette garage 2 upward to hold it in the position shown in FIG. A spring 17 is attached for this purpose. Furthermore,
A camshaft 19 is attached to one end of the slider 10.
A lever 20 having an engagement pin 18 pivoted on the other end for opening the lid 6 of the cassette 1 upward is pivotably mounted on a shaft 21, and a slider 10 is mounted on the lower surface of the lever 20. A rack 22 is fixed parallel to the direction of movement. The slider 10 is supported by a roller 24 provided on a side plate inside the main body 23 of the cassette loading device A so as to be slidable in the direction of arrow 4.

A stopper (not shown) is attached to the side plate 25 inside the main body 23 for bringing the lock release pawl 14 into abutting engagement with the locking pawl when the slider 10 slides in the direction of arrow 4. At the same time, a cam groove 26 having a bent portion 26' for guiding and sliding the camshaft 19 in order to swing the lever 20 is formed. Furthermore, the main body 2
A drive gear 30 that meshes with the final gear 29 of a transmission mechanism 28, which is composed of a plurality of gears for transmitting the rotation of the drive motor 27 and a set of pulley belts, is rotatably mounted on the side plate inside 3. A stepped gear 31 for transmitting the rotation of the drive gear 30 to the rack 22 is rotatably attached to the shaft (slider 10, rack 22, drive motor 27, transmission mechanism 28, final gear 29, a sliding drive mechanism D is constituted by a drive gear 30, a stepped gear 31, etc.).

The drive gear 30 is formed with a spiral cam groove 32 whose radial distance from the center increases sequentially according to the center angle. A cam follower 35 is rotatably attached to one end of a drive lever 34b of a cassette crimping lever 34a (lowering means), which is pivotably attached to a side plate inside the main body 23 via a shaft 33. It is slidably fitted into the groove 32. The above cassette crimp lever 34
a, the cassette crimp pin 36 attached to the tip of the cassette crimp lever 34a is brought into contact with the upper surface of the cassette 1, and the cassette 1 is moved together with the cassette garage 2 supported by the link mechanism B.
This is for driving the cassette down at the cassette loading position and loading it onto the positioning pin 38 of the main body 37 of the magnetic recording/reproducing apparatus and the cassette stay 39.

In the conventional cassette loading device A constructed as described above, the rack 22 of the slider 10 is
However, the drive motor 27 drives the slider in the sliding direction (arrow 4) via the transmission mechanism 28, drive gear 30, and stepped gear 31 (at this time, the drive gear 30 rotates counterclockwise). Then, the cassette 1 held in the cassette garage 2 is also moved in the sliding direction of the slider, and the lock release claw 14 comes into contact with a stopper (not shown), and the lock release claw 14 locks the cassette 1. By rotating the pawl, the engagement between the locking pawl and the lid 6 is released.

On the other hand, as the slider 10 slides, the engagement pin 18 provided at one end of the lever 20 moves together with the cassette 1, and after the engagement between the engagement pawl and the lid 6 is released, the engagement pin 18 moves with the cassette 1. Bent portion 26' of groove 26
Then, the camshaft 19 at the other end of the lever 20 is guided and slid downward, thereby opening the lid 6 of the cassette 1.
It comes into contact with the lower surface, pushes the lid 6 upward, and opens it slightly.

Further, when the slider 10 is slid in the slider sliding direction (arrow 4), this slider 10
The drive gear 30, which is driven together with the rack 22, also rotates counterclockwise (the cam groove 3 of the drive gear 30
rotate in a direction in which the distance from the center of 2 increases sequentially). When the cassette garage 2 holding the cassette 1 reaches the cassette loading position, a drive lever 3 having a cam follower 35 guided and slid by the cam groove 32 of the drive gear 30 is moved.
4b is driven to swing counterclockwise. Then, the cassette crimp pin 36 attached to the tip of the cassette crimp lever 34a comes into contact with the upper surface of the cassette 1, and drives the cassette 1 downward together with the cassette garage 2 supported by the link mechanism B. At this time, the lid 6 of the cassette 1 is pushed further upwards by the engagement pin 18, and is opened wide enough to allow the tape to be pulled out from the tape pull-out opening.

Furthermore, the cassette 1 is driven downward by the cassette crimp pin 36 of the cassette crimp lever 34a, and is loaded onto the positioning pin 38 of the magnetic recording/reproducing apparatus main body 37 and the cassette stay 39.

Problems with the Prior Art However, in the conventional cassette loading device A, when the cassette 1 is not held in the cassette loading position, the cassette garage 2 is accidentally
When only the cassette crimping levers 34a, 34a are moved downward, the lower part of the cassette crimping levers 34a, 34a is moved downwardly.
16b contacts the inner sides 16c and 16d, and the inner side 1
The inclined surfaces 6c and 16d are shaved. As a result, the exterior of the cassette garage 2 becomes unsightly, and
There is a problem in that the dust generated at this time scatters inside the magnetic recording/reproducing device and adversely affects image quality and sound quality.

Purpose of the invention The present invention was devised in view of the above circumstances, and is a mechanism that prevents the side surface of the cassette garage from being scraped even if only the cassette garage is accidentally driven downward without holding a cassette. The object of the present invention is to provide a cassette loading device having the following features.

Structure of the Invention In order to achieve the above object, the main means adopted by the present invention is to hold the cassette 1 to be loaded into the main body 37 of the magnetic recording/reproducing apparatus, and to hold the cassette 1 at the loading position of the cassette 1. a cassette garage 2 equipped with an elevating link mechanism B for elevating and supporting the cassette garage 2;
a sliding drive mechanism D that slides the cassette 1 between the attachment/detachment position and the loading position of the cassette 1;
a lowering means 34 for driving the cassette down together with the cassette garage 2 and loading it into the magnetic recording/reproducing apparatus main body 37;
In the cassette loading device having (a), when the cassette garage 2 in which the cassette 1 is not held is located at the loading position of the cassette 1,
In the cassette loading device according to the aspect that the lowering means 34a is provided with a pressing part 40 that presses a pressed surface 41a provided on the cassette garage 2 and drives the cassette garage 2 downward by the operation of the lowering means 34a. be.

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.

FIG. 1 is a side sectional view of a cassette loading device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the cassette loading device in a state where the cassette crimp lever is in contact with the top surface of the cassette at the cassette loading position. 3 are side sectional views of the cassette loading device when loading a cassette.

Further, the same reference numerals will be used to describe the same elements as those of the conventional cassette loading apparatus A shown in FIGS. 4 and 5.

The cassette loading device C according to this embodiment has a first
As shown in FIGS. 3 to 3, the basic structure is almost the same as that of the conventional cassette loading device A.

In the cassette loading device C, when the cassette 1 is not held in the cassette garage 2 at the cassette loading position (see Fig. 3), the cassette garage 2 and the cassette crimping levers (lowering means) 34a, 3 are
In order to avoid direct engagement with the main body 4a, pressing pins (pressing parts) 40, 40 are fixed to the respective tips of the cassette crimping levers 34a, 34a, and the pressing pins 40, 40 can be received. Pressed grooves 41, 4 having pressed surfaces 41a, 41a having planes parallel to the axes of the pressing pins 40, 40.
1 denotes each inner side 16c of the cassette guides 16a and 16b attached to the upper surface of the cassette garage 2,
It is carved on the inclined surface of 16d (see Fig. 2).

Cassette loading device C configured as described above
As shown in FIGS. 1 to 3, the rack 22 of the slider 10 constituting the sliding drive mechanism D is
However, the transmission mechanism 2 that also constitutes the sliding drive mechanism D
8, via the drive gear 30 and stepped gear 31,
The drive motor 27 drives the slider in the sliding direction (arrow 4) (at this time, the drive gear 3
0 is rotated counterclockwise), the cassette 1 held in the cassette garage 2 is also moved in the sliding direction of the slider, and the action of the engagement pin 18 provided at one end of the lever 20 Then, the lid 6 of the cassette 1 is pushed upward and opened slightly.

Further, when the slider 10 is slid in the slider sliding direction, the drive gear 30 that is driven together with the rack 22 of the slider 10 is also moved counterclockwise (the distance from the center of the cam groove 32 of the drive gear 30 is (increasing direction). When the cassette garage 2 holding the cassette 1 reaches the cassette loading position, the drive lever 34b having the cam follower 35 guided and slid by the cam groove 32 of the drive gear 30 is driven to swing counterclockwise. Ru. Then, the cassette crimp pin 36 attached to the tip of the cassette crimp lever 34a comes into contact with the upper surface of the cassette 1, and drives the cassette 1 downward together with the cassette garage 2 supported by the link mechanism B.

At this time, the lid 6 of the cassette 1 is pushed further upwards by the engagement pin 18, and is opened wide enough to allow the tape to be pulled out from the tape pull-out opening.

Furthermore, the cassette 1 is driven downward by the cassette crimp pin 36 of the cassette crimp lever 34a, and is loaded onto the positioning pin 38 of the magnetic recording/reproducing apparatus main body 37 and the cassette stay 39.

On the other hand, when the cassette 1 is not installed in the cassette garage 2, the pressing pins 40, 40 of the cassette crimping levers 34a, 34a are pressed against the pressed surfaces 41a, 41a of the pressed grooves 41, 41 of the cassette guides 16a, 16b. , and only the cassette garage 2 is driven downward.

That is, in the above operation, the lower part of the cassette pressure bonding levers 34a, 34a is connected to the cassette guide 16a,
Before contacting the inner side 16c and 16d of 16b,
The pressing pins 40, 40 provided on the cassette crimp levers 34a, 34a are connected to the cassette guides 16a, 16b.
In order to make contact with the pressed surfaces 41a, 41a provided at
without directly contacting the inclined surfaces of 6c and 16d,
The pressed surface 41 by the pressing pins 40, 40
When the cassette press levers 34a and 41a are pressed, only the cassette garage 2 is driven downward as the cassette press levers 34a and 34a are rotated.

Therefore, the conventional cassette loading device A (fourth
5), the lower part of the cassette crimp levers 34a, 34a is connected to the cassette guide 1.
There is no contact with the inner sides 16c, 16d of 6a, 16b.

Effects of the Invention As described above, the present invention provides a cassette which is equipped with an elevating link mechanism B for holding the cassette 1 loaded into the main body 37 of the magnetic recording/reproducing apparatus and for elevating and supporting the cassette 1 at the loading position of the cassette 1. a garage 2, a sliding drive mechanism D that slides the cassette garage 2 between a cassette 1 attachment/detachment position and a loading position; In the cassette loading device, which has a lowering means 34a that is driven downward together with the cassette garage 2 and loads the magnetic recording/reproducing apparatus main body 37, the cassette garage 2, which is not holding the cassette 1, is moved to the loading position of the cassette 1. When positioned, the cassette garage 2 is lowered by the operation of the lowering means 34a.
Since this cassette loading device is characterized in that the lowering means 34a is provided with a pressing portion 40 that drives the cassette garage 2 downward by pressing a pressed surface 41a provided at Even if only the cassette garage is driven downward, the side surface of the cassette guide attached to the top surface of the cassette garage will not be scraped.

Therefore, the overall appearance of the cassette garage does not become unsightly, and furthermore, since no dust is generated, the image quality and sound quality of the magnetic recording/reproducing device are not adversely affected.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a cassette loading device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the cassette loading device in a state where the cassette pressure lever is in contact with the top surface of the cassette at the cassette loading position.
FIG. 3 is a sectional side view of the cassette loading device when a cassette is loaded, FIG. 4 is a sectional side view of the conventional cassette loading device, and FIG. 5 is a view corresponding to FIG. Explanation of symbols, 1...Cassette, 2...Cassette garage, 16a, 16b...Cassette guide,
16c, 16d...Inside, 34a...Cassette crimping lever (lowering means), 37...Magnetic recording/reproducing device main body, 40...Press pin (pressing part), 41...
Pressed groove, 41a...Pressed surface, B...Elevating link mechanism, D...Sliding drive mechanism.

Claims (1)

[Claims for Utility Model Registration] A cassette garage 2 equipped with an elevating link mechanism B for holding a cassette 1 to be loaded into a magnetic recording/reproducing apparatus main body 37 and for lifting and lowering the cassette 1 at the loading position of the cassette 1; A sliding drive mechanism D that slides the cassette garage 2 between the cassette 1 loading/unloading position and the loading position.
and a lowering means 34a that contacts the upper surface of the cassette 1 at the loading position of the cassette 1 and drives the cassette 1 downward together with the cassette garage 2 to load it into the magnetic recording/reproducing apparatus main body 37, When the cassette garage 2 in which the cassette 1 is not held is located at the loading position of the cassette 1, the lowering means 34a presses the pressed surface 41a provided on the cassette garage 2 to release the cassette 1. A cassette loading device characterized in that a pressing portion 40 for driving the cassette garage 2 downward is provided on the lowering means 34a.