JPH0417154A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To allow a tape cassette to come near a cylinder at a position where a reel and a reel base are engaged with each other by allowing a friction member to drive a reel thereby winding the tape at ejection of a tape cassette. CONSTITUTION:A tape 1f is extracted from a tape cassette 1 and wound on a tape winding section of a cylinder 8. When a cassette lock mechanism is released, a reel lock member 15 is moved in the direction of arrow C with a tension of a tensile spring 7. Since a pin 15e is implanted to the release member 15, which is engaged with a notch 16a of a tape winding member 16, then the winding member 16 is turned counter clockwise around a fulcrum 16b till the pin 15e and the notch 16a are not engaged. In this case, the cassette 1 is moved with the release member 15 and since the bottom of the reel 1c and the friction member 16c are in contact with each other to drive the reel 1c counter clockwise, then the tape 1f is wound. Thus, the cassette 1 is brought close to the cylinder 8 at a position where the reel 1c and the reel base 13 are engaged with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tape cassette mounting mechanism in a magnetic recording and reproducing apparatus that records and reproduces signals by winding a tape pulled out from a tape cassette around a cylinder.

2. Description of the Related Art In recent years, there has been a demand for smaller devices in helical scan type video cassette recorders (hereinafter abbreviated as vCR), and in order to meet this demand, miniaturization of each part has been attempted. Among these, how close the tape cassette can be to the cylinder is one of the items that should be particularly considered in reducing the size of the vCR. It is important to devise a tape cassette mounting mechanism in order to bring the tape cassette and cylinder closer together.

The tape cassette mounting mechanism of a conventional magnetic recording/reproducing apparatus will be explained below.

FIG. 6 is a side view of a conventional magnetic recording/reproducing apparatus at a position where a tape cassette is inserted. In Figure 6,
1 is a tape cassette, 2 is a cassette holder, 3 is a lid release member, 4 is a lid release member, 5 is a reel lock release member, 6 and 7 are tension springs, 8 is a cylinder,
9 is a cylinder mounting screw, 10 is a chassis, 11 is a post, 12 is a pinch roller, and 13 is a reel stand.

The operation of the magnetic recording/reproducing apparatus configured as described above will be described below. The cylinder 8 is fixed to the cassette holder 2 with cylinder mounting screws 9. The cassette holder 2 is at a position where the tape cassette 1 can be inserted, and at this position the tape cassette 1 is inserted in the direction of arrow A. The tape cassette 1 advances toward the back along a cassette guide plate 2a provided on the cassette holder 2. When the tape cassette 1 is inserted, the lid lock 1a comes into contact with the protrusion 3a provided on the lid lock release member 3, and the lid lock 1 is released.
a is canceled. Thereafter, the lid lock release member 3 moves together with the tape cassette 1 while sliding on the cassette guide plate 2a against the tension of the tension spring 6 stretched between the lid lock release member 3 and the reel lock release member 5. With this movement, the pin 3b protruding from the lid unlocking member 3 moves within the long hole 4a of the lid opening member 4. As a result, the lid opening member 4 is pivotally attached to the reel lock release member 5 by the support shaft 4b.
rotates about the support shaft 4b, and the lid release pin 4c protruding from its free end pushes up the cassette lid 1b, thereby opening the cassette lid 1b. After the cassette lid 1b is opened, the lower front surface 1g of the tape cassette 1 comes into contact with the projection 5c, so the reel lock release member 5 resists the tension of the tension spring 7 stretched between it and the cassette holder 2. Then, the pins 5a and 5b start moving together with the tape cassette 1 while being guided by the guide grooves 2c+ and 2d into which the pins 5a and 5b are loosely fitted, respectively. Guide groove 2
c consists only of a portion parallel to the direction of arrow A, and guide groove 2d
consists only of the part that is inclined with respect to the direction of arrow A, so
The reel lock release member 5 performs a combined movement of parallel movement in the direction of arrow A and rotation about the pin 5a. As a result, the reel lock release pin 5d protruding from the reel lock release member 5 is gradually inserted into the reel lock release hole 1e. When the pin 5a comes into contact with the end of the guide groove 2c and moves to the position where insertion of the tape cassette 1 ends, insertion of the reel lock release pin 5d into the reel lock release hole 1e is completed and the tape 1f and cylinder 8 makes contact.

When the insertion is completed, the tape cassette 1 is locked to the cassette holder 2 by a cassette locking mechanism (not shown).

Note that while the reel lock releasing member 5 moves, the positional relationship between the lid opening member 4 and the cassette lid 1b changes.

This is because the movement of the reel lock releasing member 5 to which the lid opening member 4 is pivotally attached by the support shaft 4b includes a rotational component about the pin 5a. As a result, the cassette lid 1b is slightly closed from the open state, but the angle is small and the open state of the cassette lid 1b continues to be maintained.

FIGS. 7 and 8 are a side view and a plan view, respectively, of a main part of a conventional magnetic recording/reproducing apparatus at a position where a reel and a reel stand engage with each other. After the tape cassette 1 is inserted into the cassette holder 2, by pressing the cassette holder 2, the cassette holder 2 containing the tape cassette 1 is rotated against the biasing force of a holder biasing spring (not shown). It rotates around 2b as a fulcrum. The rotation of the cassette holder 2 continues until the reel 1c and the reel stand 13 engage, and at the position where the reel 1c and the reel stand 13 engage, a cassette holder locking mechanism (not shown) locks the cassette holder 2 into the chassis 10.
locked against. At this time, the boss 11 and the pinch roller 12 are inserted into the bottom opening 1d of the tape cassette 1, and the tape cassette 1 is mounted. After this,
The tape 1f is further pulled out and completely wrapped around the cylinder 8.

Problems to be Solved by the Invention However, in the conventional configuration described above, when the tape cassette is inserted, the lid is unlocked, the lid is opened, and the reel is unlocked to bring the tape into contact with the cylinder attached to the cassette holder. Although it is possible to bring the tape cassette and cylinder closer together simply by inserting the tape cassette without causing fatal damage, it is possible to bring the tape cassette closer to the cylinder by simply inserting the tape cassette. You can't get close to it because it doesn't collect anything. For this reason, the tape cassette and the cylinder cannot be brought close enough to each other at the position where the reel and the reel stand engage, resulting in a problem that further miniaturization of the VCR cannot be achieved.

The present invention solves the above conventional problem by bringing the tape cassette and cylinder so close that the tape is wrapped around a part of the cylinder at the position where the reel and the reel stand engage. The purpose of the present invention is to provide a magnetic recording/reproducing device that can perform the following functions.

Means for Solving the Problems To achieve this object, the magnetic recording and reproducing apparatus of the present invention includes a cassette holder that holds and guides a tape cassette containing a pair of reels on which magnetic tape is wound, and a cassette holder that holds and guides a tape cassette containing a pair of reels on which magnetic tape is wound. A friction member disposed so as to be able to come into contact with the bottom surface of at least one of the reels, and a moving means for moving the friction member relative to the reel while bringing the friction member into contact with the bottom surface of the reel. .

Effect of the Invention With the above-described configuration, the present invention can wind up the tape by rotating the reel by the friction member at the time of removal, even if the tape is wrapped around a part of the cylinder at the time of installation. Therefore, the tape cassette and cylinder can be brought as close as possible at the position where the reel and reel stand engage.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

1 and 2 are plan views of essential parts of a tape winding mechanism according to an embodiment of the present invention. In FIG. 1, 14 is a cassette holder, 15 is a reel lock release member, and 16 is a tape winding member which is pivotally attached to the cassette guide plate 14a by a support shaft 1t3b and has a friction member 161c such as rubber attached to its free end. It is. Before explaining this mechanism in which the tape 1f is wound when unloading, the tape 1f is wound at the position where the reel 1c and the reel stand 13 are engaged when being loaded.
A mechanism in which f is wound with a predetermined tape around a part of the cylinder 8 will be explained.

FIG. 3 is a side view of the magnetic recording/reproducing apparatus in the embodiment of the present invention at a position where a tape cassette is inserted.

Cylinder 8 is fixed to cassette holder 14 with cylinder mounting screws 9. The cassette holder 14 is in a position where the tape cassette 1 can be inserted, and the tape cassette 1 is inserted in the direction of arrow B at this position. The tape cassette 1 has a cassette guide plate 14a provided on the cassette holder 14.
The cassette lid 1a is released, the cassette lid 1b is opened, and the drawer 1c is unlocked in the process. Releasing the lid lock 1a, opening the cassette lid 1b, and unlocking the reel 1c are the same as in the prior art, and will not be specifically explained here. The tape 1f and the cylinder 8 come into contact at the position where the insertion of the reel lock release pin 15d into the reel lock release hole 1e ends. At that position, the pin 15a is inserted into the guide groove 14.
Further insertion of the tape cassette 1 is possible because the end of the tape 1f is not reached, and the tape 1f is pulled out and wound around the cylinder 8 by further insertion. At this time, since the tape cassette 1 moves only in the direction of arrow B, the tape 1f
The tape 1f is wound almost uniformly in the width direction of the cylinder 8 while being in contact with the cylinder 8 without applying excessive force to the cylinder 8. In this winding, the pin 15a is connected to the guide groove 1.
This continues until the tape cassette 1 comes into contact with the end of the tape cassette 4c and the insertion of the tape cassette 1 is completed. When the insertion is completed, a cassette lock mechanism (not shown) locks the tape cassette 1 into the cassette holder 1.
Locked against 4.

FIGS. 4 and 5 are a side view and a plan view, respectively, of a main part of a magnetic recording/reproducing apparatus according to an embodiment of the present invention at a position where a reel and a reel stand engage with each other. After the tape cassette 1 is inserted into the cassette holder 14, by pressing the cassette holder 14, the cassette holder 14 containing the tape cassette 1 moves against the biasing force of a boulder biasing spring (not shown) on the support shaft. Rotation is performed using 14b as a fulcrum. The rotation of the cassette holder 14 continues until the reel 1c and the reel stand 13 engage, and at the position where the reel 1c and the reel stand 13 engage, a cassette holder locking mechanism (not shown) locks the cassette boulder 14 into the chassis 10. locked against.

At this time, the boss 11 and the pinch roller 12 are inserted into the bottom opening 1d of the tape cassette 1, and the tape cassette 1 is attached. After this, the tape 1f is further pulled out and completely wrapped around the cylinder 8.

This completes the explanation of the mechanism in which the tape 1f is wrapped around a part of the cylinder 8 at the position where the reel IC and the reel stand 13 engage at the time of mounting, and that the tape 1f is wound at the time of removal. Returning to the explanation of the mechanism adopted.

FIG. 1 is a plan view of the main part of the tape winding mechanism at a position where the tape cassette 1 is locked to the cassette holder 14. The tape winding member 16, which is pivotally attached to the cassette guide plate 14a by a support shaft tab, is connected to a reel IC and a reel stand 13.
in a position that does not interfere with the engagement of the Further, the tape 1f is pulled out from the tape cassette 1 and is wound around a part of the rectangular area of the cylinder 8. When the cassette lock mechanism (not shown) is removed, the reel lock release member 1
5 moves in the direction of arrow C by the tension of tension spring 7.

Since the reel lock release member 15 has a protruding pin 15e that engages with the notch lea of the tape winding member 16, as the reel lock release member 15 moves, the tape winding member 16 moves toward the pin 15e. It rotates counterclockwise about the support shaft 16b until the notch 16a is no longer engaged with the support shaft 16b.

At this time, the front lower part 1g of the tape cassette 1 has a protruding piece 15c.
Since it is in contact with the reel lock release member 15, it moves in the same way as the reel lock release member 15. During movement, the friction member 16c contacts the bottom surface of the reel 1c peeking from the bottom surface of the tape cassette 1, causing the reel IC to rotate counterclockwise.
f will be wound.

FIG. 2 is a plan view of the main part of the tape winding mechanism at the position where the rotation of the tape winding member 16 ends.

When the tape winding member 16 rotates to the position shown in FIG. 2, the position restriction by the pin 15e is removed, but the lid lock release member 3 slides on the cassette guide plate 14a and moves in the direction of arrow C, and the tape winding member 16 is rotated to the position shown in FIG. 16, the tape winding member 16 is prevented from rotating clockwise.

The lid lock release member 3 prevents rotation by the pin 15.
Tape winding member 1 by engagement between e and notch IE3a
This will be carried out throughout the period when the position restrictions in 6 are no longer in place.

Furthermore, a projecting piece 14e is provided on the cassette holder 14 so as to prevent the tape winding member 16 from rotating counterclockwise.
After rotating from the position shown in the figure to the position shown in Figure 2, it is locked at the position shown in Figure 2. At the end of the rotation of the tape winding member 16, the reel 1c is not yet locked, and the bottom surface of the reel 1c and the friction member 16c are in contact with each other, so that even when the tape cassette 1 moves in the direction of arrow C thereafter, the reel 1c is not locked yet. The reel 1c rotates counterclockwise until the reel 1c is locked, and the tape 1f is completely wound.

The tape winding mechanism when taking out the tape cassette 1 has been described above, but when it is attached, the movement is opposite to when it is taken out. That is, the tape winding member 16 rotates the reel 1c in the opposite direction to the winding direction of the tape 1f to slacken the tape 1f.

This eliminates the need to rotate the reel 1c due to the contact force between the tape 1f and the cylinder 8 during mounting. Further, even if the tape 1f is slack after the tape cassette 1 is installed, the tape 1f is further pulled out and completely wrapped around the cylinder 8. Considering this, the tape winding member 16 can There is no particular problem in letting it slack.

In the embodiment, the tape winding member 16 to which the frictional member 16c is attached is placed only at a position corresponding to the glue 1c on one side, but it may be placed on both sides depending on the amount of tape 1f to be wound. good.

Further, in the embodiment, the friction member 16c is rotated counterclockwise to contact the bottom portion of the reel 1c near the center of the tape cassette, but the rotation direction of the friction member 16c and the contact of the reel 1c are Of course, the parts are not limited to those in the embodiment, and the friction member 16c can be moved in various ways other than rotation.

Effects of the Invention As described above, the present invention provides a cassette holder that holds and guides a tape cassette/sheet containing a pair of reels on which magnetic tape is wound, and a cassette holder that makes contact with the bottom surface of at least one reel of the tape cassette/sheet. A friction member disposed such that the friction member can be moved relative to the reel while bringing the friction member into contact with the bottom surface of the reel. Even if the tape is wrapped around a part of the tape, the tape can be wound up at the time of unloading, so the tape cassette and cylinder can be brought as close as possible to each other at the position where the reel and reel stand engage. And VC only at close distance
Since the width of the R tape cassette in the front and back direction can be shortened, the VCR can be made smaller.

In the present invention, the friction member is moved by providing a moving means, which has the following characteristics compared to a case where the friction member is fixedly arranged. Even if the tape cassette attachment/detachment path is short, a long contact distance can be obtained between the tape cassette and the bottom surface of the friction member handle, so that the tape can be wound more reliably. The part of the bottom of the reel that can be brought into contact with the friction member is no longer limited to the part near the center of the tape cassette, but can also be brought into contact with the side of the tape cassette depending on how the friction member is moved. The degree of freedom in arranging the friction members increases.

[Brief explanation of the drawing]

1 and 2 are plan views of essential parts of a Kero tape winding mechanism according to an embodiment of the present invention, FIG. Figures 4 and 5 are a side view and a plan view of the main parts of the magnetic recording/reproducing device of the same embodiment at the position where the reel and reel stand engage, respectively, and Figure 6 is a diagram showing the insertion of a tape cassette in the conventional magnetic recording/reproducing device. FIGS. 7 and 8 are a side view and a plan view, respectively, of essential parts of a conventional magnetic recording and reproducing apparatus at a position where the reel and reel stand engage with each other. 1...Tape cassette, IC...Reel, 1l
li 14...Cassette holder, removal member, 15e...pin, member, 16a...notch,

Claims (1)

[Claims] a cassette holder that holds and guides a tape cassette containing a pair of reels on which magnetic tape is wound; a friction member disposed so as to be able to come into contact with a bottom surface of at least one reel of the tape cassette; A magnetic recording and reproducing device comprising: a moving means that moves relative to the reel while being in contact with a bottom surface of the reel.