JPH0419623B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette loading device.

Conventional structure and its problems Traditionally, for example, a VHS system VTR cassette has an opening for tape loading and a guard panel that shields the opening, and the cassette is connected to a magnetic recording/reproducing device through the opening. and insert
When designing a deck in which the cassettes are placed upright, most decks are equipped with a cassette holder like a so-called kangaroo pocket, as shown in FIG. In this case, e.g.
In VHS cassettes, the letters, designs, labels, etc. written on the cassettes were all upside down, which not only made it difficult to see, but also significantly degraded the quality of the product. In addition, in Figure 1, 3
Reference numeral 1 denotes the main body of the magnetic recording/reproducing apparatus, 32 a cassette holder, and the cassette 33, which can be seen through the transparent part in an ejected state, can be taken out freely.
34 is a push button for operation, and 35 is a handle rotatable around a fulcrum 36. The cassette 33 is inserted in the direction of arrow A with the guard panel side facing downward, and then mounted by manually pushing the cassette holder 32 in the direction of arrow B.

OBJECTS OF THE INVENTION The purpose of the present invention is to overcome the above-mentioned conventional drawbacks, and it is an object of the present invention to allow a cassette to be loaded with the label of the cassette erected.

Structure of the Invention In order to achieve the above object, the cassette loading device of the present invention is capable of freely moving between a first position where a magnetic recording and reproducing cassette can be taken out and a second position where the cassette is engaged with a reel stand. A cassette holder having a rotated body that is supported and rotates together, a slide plate that rotatably supports the cassette holder, and a rotating shaft on the slide plate that transmits rotational force to the rotated body. a rotating body,
a drive shaft protruding from the rotating body; a drive lever that moves the slide plate via the rotating body and rotates the rotating body; and a drive lever that guides movement of the drive shaft and substantially linear movement of the slide plate. a guide base having a guide portion; the drive source includes a motor that rotates in forward and reverse directions; the drive force from the drive source is transmitted through a connection between the drive lever and the drive shaft; It is designed to be driven by rotating a drive lever in the same direction as the rotation direction.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows a cassette deck equipped with a cassette loading device according to an embodiment of the present invention. A cassette deck 1 has a power switch 2 and an eject switch 3 on the right side when viewed from the front, and a cassette 5, which can be seen standing upright, is set in a predetermined position inside a cassette holder 4. Also, this cassette deck 1 has a tape counter 6 on the left side when looking from the front.
An operation push button 7 is located there.

Next, the configuration of the cassette mounting device will be described based on FIG.

In the figure, 8 is a chassis, 9 is a guide base provided in the cassette deck 1, and 10a to 10
d is a guide groove formed in the guide base 9. The guide grooves 10a, 10b, and 10d each have a length of about 40 mm and are formed horizontally. Guide groove 10
C has a horizontal portion and an arcuate portion extending upward from the tip thereof, and the horizontal portion has a length of about 40 mm, and the arcuate portion is formed by an arc centered on the support shaft 23c in the state shown in FIG. 12 is a motor; 13 is a mounting base for fixing the motor 12 to the guide base 9; 12b is a motor pulley press-fitted onto the rotating shaft 12a of the motor 12;
A worm 14 has a press-fitted support shaft 14a, and this support shaft 14a passes through the mounting base 13. Further, the left side of the worm 14 is supported by a rotating shaft 12a, connected to a motor pulley 12b, and rotated by the rotation of the motor pulley 12b.
A worm wheel 15 meshes with the worm 14 and is rotatable around a support shaft 15a fixed to the guide base 9. 15b is a spur gear portion that rotates together with the worm wheel 15. A relay gear 16 has a spur gear part 16a that meshes with the spur gear part 15b and a spur gear part 16b that meshes with another relay gear 17, and is rotatable around a support shaft 16c fixed to the guide base 9. The other relay gear 17 is a support shaft 17 fixed to the guide base 9.
It is rotatable around a. 18 is a connecting gear,
It rotates together with a connecting support shaft 18a that passes through the guide base 9, and meshes with the relay gear 17. Reference numeral 19 denotes a driving gear which meshes with the connecting gear 18 and is rotatable around a support shaft 19a fixed to the guide base 9. 20 is a drive lever, which has a long hole 21 at its tip.
It rotates together with the drive gear 19 around the support shaft 19a. 22 is a main rotating gear, which is rotatable around a support shaft 23c implanted in the slide plate 23, and its effective wheel portion is about 90° around 23c. Reference numeral 22a denotes a drive pin, which is implanted in the main rotating gear 22 and engages with the guide groove 10c and the elongated hole 21 via the roller 22b. 23a and 23e are engagement pins, which are implanted in the slide plate 23 and are inserted into the guide grooves 10a and 1 through rollers 23b and 23f, respectively.
0b. Also, the support shaft 23c is also the roller 23.
It engages with the guide groove 10d via d. Therefore, the slide plate 23 is movable only in the horizontal direction within a range of about 35 mm. 23g is a holder shaft that rotatably supports the cassette holder 4;
It is planted at the right end of the slide plate 23. The vertical load applied to the holder shaft 23g is supported by the three guide grooves 10a, 10b, 10d via the engagement pins 23a, 23e, the support shaft 23c, and the rollers 23b, 23f, 23d. 23h
is a contact portion provided to contact the contact portion 24a of the lever opener 24, and is integral with the slide plate 23. The cassette holder 4 is rotatable within a range of about 105° about the holder shaft 23g. 25 is a gear to be rotated, which is fixed to the cassette holder 4, and therefore the holder shaft 23g
It is freely rotatable within a range of approximately 105° around , and is engaged with the main rotating gear 22. Reference numeral 26 denotes a cassette lock lever, which is rotatable around a support shaft 26a fixed to the cassette holder 4. A connecting pin 26b is installed at the rear end, and a spring hook 26 is installed at the upper part.
c, and the tip 26d prevents the cassette 5 from falling off. The lever opener 24 is also rotatable around the holder shaft 23g, and has a groove 24b at the tip that engages with the connecting pin 26b, and a contact provided at the rear end to come into contact with the abutted portion 23h. There is a contact portion 24a. Reference numeral 27 denotes a spring, which is hung between a spring hook 4b fixed to the cassette holder 4 and a spring hook 26c of the cassette lock lever 26. Therefore, the cassette lock lever 26 is biased counterclockwise and the lever opener 24 is biased clockwise. A cassette holder 28 is fixed to the cassette holder 4 and guides the cassette 5 in the vertical direction. Reference numeral 4a denotes a long hole formed in the cassette holder 4, through which a connecting pin 26b passes. Therefore, although the connecting pin 26b is rotatable about the support shaft 26a, its rotation range is limited by the elongated hole 4a. Similarly, the rotation range of lever opener 24 is also limited. 11 is a guard panel located in front of the cassette 5. 29
is a cassette support post fixed to the chassis 8, to which the cassette 5 is pressed when the cassette 5 is engaged with the reel stand.

The drive mechanism for the cassette holder 4 described above is provided on both left and right inner surfaces of the cassette deck 1.
Power is transmitted from the drive mechanism located on one side to the drive mechanism located on the other side via the support shaft 19a.

The operation of the present invention will be explained below. In FIG. 3, the cassette lock lever 26 is in an open state, and the cassette 5 can be inserted into and removed from the cassette holder 4. Now, in Fig. 3, the motor 12
When the motor pulley 12b is rotated, the worm 14 connected thereto also rotates. This causes the worm wheel 15 to rotate clockwise.
This rotational force is applied to the spur gear portion 15b, the relay gears 16, 1
7. It is transmitted to the drive gear 19 via the connection gear 18, and the drive gear 19 rotates counterclockwise. Therefore, the drive lever 20 fixed to the drive gear 19 also rotates counterclockwise about the support shaft 19a. Here, the main rotating gear 22 is connected to the elongated hole portion 21 and the guide groove 10c via the roller 22b by the driving pin 22a.
Since the rotation of the drive lever 20 also causes the main rotating gear 22 to rotate counterclockwise. As a result, the rotated gear 25 meshing with the main rotating gear 22 rotates clockwise around the holder shaft 23g, which is its rotation center. Therefore, the cassette holder 4, which is integrated with the rotated gear 25, also rotates clockwise. In the state shown in Figure 3, as mentioned earlier, the cassette lock lever 2
6 is open, but this is because the contact portion 24a of the lever opener 24 contacts the contact portion 23h fixed to the slide plate 23, and the cassette lock lever 26 is opened via the connecting pin 26b engaged with the groove portion 24b. This is because it prevents it from rotating clockwise.
However, when the cassette holder 4 rotates clockwise as described above, the following movement occurs. FIG. 5A is in the same state as FIG. 3. While the cassette holder 4 rotates approximately 8° clockwise from this state, the contact portion 24a of the lever opener 24 remains in contact with the contact portion 23h fixed to the slide plate 23, so the lever opener 24 It doesn't rotate.
As a result, the groove 24b of the lever opener 24
The connecting pin 26b engaged with the cassette holder 4 rotates approximately 12 degrees clockwise relative to the cassette holder 4.
At this point, the cassette lock lever 26 will surely "lock" the cassette 5, as shown in FIG. 5B. FIG. 5C shows a state in which the cassette holder 4 is further rotated clockwise around the holder shaft 23g. The lever opener 24 is biased counterclockwise by the spring 27 via the connecting pin 26b, but since the lower part of the cassette lock lever 26 is in contact with the upper surface of the cassette 5, it is biased relative to the cassette holder 4. It cannot be rotated. That is, in this state, the cassette lock lever 26 and the lever opener 24 are integrated with the cassette holder 4 and the holder shaft 23
Rotate clockwise around g. After the above operations, the cassette loading device shifts to the state shown in FIG. In FIG. 6, the cassette holder 4 and the cassette 5 are erected. As mentioned above, since the arc portion of the guide groove 10c is formed by an arc centered on the support shaft 23c in the state shown in FIG. 3, the transition from the state shown in FIG. 3 to the state shown in FIG. During the transition, the support shaft 23c remains stationary. Therefore, the slide plate 23 on which it is installed also remains stationary.
Here, to specifically explain the movements of the main parts that occur during the transition operation from FIG. 3 to FIG. 6, the cassette holder 4 and the rotated gear 25 move approximately clockwise.
105° rotation, slide plate 23 is stationary, main rotating gear 2
2 rotates about 67 degrees counterclockwise, the drive gear 19 and the drive lever 20 rotate about 57 degrees counterclockwise, and the drive pin 22a and roller 22b reach the boundary between the horizontal part and the circular arc part of the guide groove 10c. Moving.
When the motor 12 further rotates and the drive lever 20 rotates approximately 76 degrees clockwise, the drive pin 22a and roller 22b move approximately 35 mm horizontally to the left along the guide groove 10c. Now, since the support shaft 23c, which is the center of rotation of the main rotary gear 22, is installed in the slide plate 23, as mentioned earlier, the slide plate 23c
Similarly, the support shaft 23c is also movable only in the horizontal direction. Therefore, the horizontal movement of the drive pin 22a installed in the main rotating gear 22 causes the main rotating gear 22 to move approximately 35 mm horizontally to the left without rotating. Of course, the slide plate 23 is also moved horizontally to the left by about 35 mm due to the horizontally leftward driving force being transmitted through the support shaft 23c. At this time, holder shaft 2
The cassette holder 4 connected to the slide plate 23 by 3g also moves approximately horizontally to the left without rotating.
Moves 35mm. Through the above operations, the cassette loading device shifts to the state shown in FIG.
is pressed onto the cassette support post 29, the guard panel 5a is opened, and the magnetic tape can be pulled out and stored from the cassette opening. Needless to say, the erect perspective of the cassette 5 is realized in the state shown in FIG. The transition from the state shown in FIG. 7 to the state shown in FIG. 3 is a completely opposite operation to that described above, and can be realized by rotating the motor 12 in the reverse direction.

As described above, according to this embodiment, when the cassette 5 is inserted into the cassette holder 4, the cassette 5 is inserted from a position that allows it to be inserted slightly diagonally downward, and when the cassette 5 engages with the reel stand, the cassette 5 is placed in an upright position so that it can be seen through. A mechanism for moving the cassette holder 4 to a desired position can be realized with a small number of parts, and the mechanism is extremely simple, driving only the main rotating gear 22. 4 has excellent positional accuracy in the vertical, horizontal, and horizontal directions. Furthermore, by placing the supporting portion of the cassette holder 4 on the slide plate 23 in a position close to a straight line passing through the center of gravity of the cassette 5 and the cassette holder 4, the load on the drive source when the cassette holder 4 makes a predetermined movement is extremely reduced. becomes smaller. By appropriately selecting the drive locus of the drive pin 22a protruding from the main rotating gear 22, it is possible to cause the cassette holder 4 to perform various movements including rotation and approximately parallel movement. Furthermore, by moving the cassette holder 4 as described above, the cassette 5 can be inserted very easily, the cassette 5 can be easily seen after installation, and the quality of the product is greatly improved, so the practical effects are great. be.

Effects of the Invention As described above, according to the present invention, there is provided a rotatable body that rotates together with a cassette holder, a slide plate that rotatably supports the cassette holder, and a slide plate that has a rotating shaft that supports the rotated body. By providing a rotating body that transmits rotational force to the cassette, the cassette can be mounted in an upright position, which has a great practical effect.

[Brief explanation of drawings]

Fig. 1 is an external perspective view showing a conventional example, Figs. 2 to 7 show an embodiment of the present invention, Fig. 2 is an external perspective view, and Fig. 3 is a cross section showing the internal mechanism when inserting a cassette. 4 is an exploded perspective view showing the internal mechanism, FIGS. 5A to 5C are cross-sectional side views showing the movement of the cassette lock mechanism, and FIG. 6 shows the cassette holder rotated until it is erected after inserting the cassette. FIG. 7 is a cross-sectional side view showing the internal mechanism after the cassette is attached. 1...Cassette deck, 4...Cassette holder, 5...Cassette, 9...Guide base, 10
a to 10d... Guide groove, 11... Guide panel, 12... Motor, 12a... Rotating shaft, 12b
...Motor pulley, 14...Worm, 15...
Worm wheel, 15b... Spur gear portion, 16...
...Relay gear, 16a, 16b...Spur gear part, 17
... Relay gear, 18 ... Connection gear, 19 ... Drive gear, 20 ... Drive lever, 21 ... Long hole part, 2
2... Main rotating gear, 22a... Drive pin, 23...
...Slide plate, 23a...Engagement pin, 23c...
Support shaft, 23e... Engagement pin, 23g... Holder shaft, 23h... Abutted part, 24... Lever opener, 24a... Abutting part, 25... Rotated gear, 26... Cassette lock lever , 26a...
Support shaft, 27... Spring, 28... Cassette holder, 2
9...Cassette support post.

Claims (1)

[Claims] 1 The first part from which the magnetic recording and reproducing cassette can be taken out.
and the second position where the cassette engages with the reel stand.
a cassette holder having a rotated body which is supported so as to be movable between the cassette holder and the cassette holder, which rotates together with the cassette holder, a slide plate which rotatably supports the cassette holder, and a rotating shaft on the slide plate;
A rotating body that transmits rotational force to the rotated body, a drive shaft protruding from the rotating body, a drive lever that moves the slide plate via the rotating body and rotates the rotating body, and the drive a guide base having a guide portion that guides the movement of the shaft and the substantially linear movement of the slide plate; the drive source includes a motor that rotates in forward and reverse directions; the drive force from the drive source is applied to the drive lever and the slide plate; A cassette mounting device that transmits power by connecting a drive shaft and is driven by rotating a drive lever in the same direction as the rotating direction of the rotating body.