JPH0315268B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a recording and/or reproducing apparatus, particularly a tape reel equipped with a locking mechanism for the tape reel.
Using a cassette, e.g. video tape
It relates to recording and/or reproducing devices such as recorders.

(Prior art) In recent years, video tape recorders (hereinafter referred to as VTRs)
) is becoming increasingly portable,
As VTRs became smaller and lighter, opportunities for outdoor shooting increased.
It is often carried around on the shoulder or in the car. When carrying a VCR, the tape cassette is almost always loaded, so the cassette lid is left open, and there is a risk that the tape may become loose due to vibrations during transport. If this happens, the tape may get caught on the cassette lid and become damaged when the cassette is taken out, or the tape may fall off the tape pull-out guide during tape loading, making loading impossible.

The cassette side is equipped with a reel lock mechanism, but this is designed to be released when the cassette is loaded into the VTR.Therefore, when the cassette is loaded, the reel on the cassette side is braked by the reel on the VTR side. This is done using only the brakes on the stand, which lacks reliability.

(Purpose) The present invention has been made in view of the above-mentioned circumstances, and has an extremely simple structure that eliminates unnecessary unlocking of the tape/reel on the cassette side by minimizing the required minimum period of time. It is an object of the present invention to provide a recording and/or reproducing device that prevents tape sag from occurring.

(Embodiment) First, a tape cassette used in an embodiment of the present invention, particularly a locking mechanism for its tape reel, will be described with reference to FIGS. 1 to 3.

In Figures 1 to 3, CA (Figures 2 and 3) is the tape cassette, 1 is the lower flange of the supply reel,
Reference numeral 2 denotes a lower flange of the take-up reel, each of which has uneven portions 1a and 2a on its outer periphery. 3 and 4 are locking members for each reel, and the tip 3 of each reel is a lock member.
a, 4a are adapted to engage with uneven portions 1a, 2a on the outer periphery of the reel lower flanges 1, 2. The lock member 3 is rotatable around a shaft 5, and is biased counterclockwise by a spring (not shown).
On the other hand, the lock member 4 is rotatable about a shaft 6 and is biased clockwise by a spring (not shown). Reference numeral 7 designates a lock release member which is rotatable about a shaft 8, and its tips 7a and 7b abut against the tail ends 3b and 4b of the lock members 3 and 4, respectively.

When the tape cassette CA equipped with such a reel locking mechanism is not loaded into a VTR, the tips 3a and 4a of the locking members 3 and 4 lock the reel under the action of springs (not shown). Lower flange 1,
The rotation of the reel is locked by engaging with the concavo-convex portions 1a and 2a on the outer periphery of the reel. When loading the cassette CA into the VTR, pin 10, which is planted on the VTR side,
(FIG. 3) enters through the hole 9 of the cassette CA and comes into contact with the tail end 7c of the lock release member 7, causing the lock release member 7 to rotate about the shaft 8 in the direction of arrow A in FIG. Then, the tip 7a pushes the tail end 3b of the lock member 3, and the tip 7b pushes the tail end 4b of the lock member 4, so that the lock member 3 moves clockwise around the shaft 5, and the lock member 4 pushes the tail end 3b of the lock member 3. 6 in a counterclockwise direction against springs (not shown). As a result, the tips 3a, 4a of each locking member 3, 4 are connected to the uneven portions 1a, 2 on the outer periphery of the reel lower flanges 1, 2.
The reels are released from a and the reels are unlocked.

In this way, the reel lock mechanism on the cassette CA side locks the cassette CA in conventional VTRs.
It will be canceled as soon as it is loaded into the VCR.

Therefore, one embodiment of the present invention uses a cassette CA.
The reel lock on the cassette CA side is not released just by loading it into the VTR, but is released only when the brake on the reel stand is released. That is, the VTR side is provided with a reel stand as a driving means for rotationally driving the reel on the cassette CA side and a braking means for the reel stand. Then, the reel lock release on the cassette CA side is linked with the release of this reel stand brake, and the reel lock is released.
This structure solves all the various inconveniences by releasing the lock only for a necessary period.

In Figures 4 and 5, 11 is a reel stand for driving the reel on the supply side, 12 is a reel stand for driving the reel on the take-up side, and 13 is a brake lever as a braking means on the supply side, which rotates around a shaft 14. is free, and
A rubber pad 15 is attached to the tip,
An elongated hole 13a is bored at the tail end, and this engages with a pin 22 set on a slide lever 21 constituting a reel platform brake release means.
The spring 16 biases the shaft 14 in a counterclockwise direction. A brake lever 17 serves as a braking means on the take-up side, and is rotatable around a shaft 18. Like the brake lever 13 on the supply side, it has a rubber pad 19 at the tip and a rubber pad 19 at the tail end. An elongated hole 17a is formed in the hole 17a, which engages with a pin 22, and is biased clockwise about the shaft 18 by a spring 20.

The slide lever 21 has a fixed planting pin 23,
24 in its elongated holes 21a, 21b, and is connected at the tail end opposite to the pin 22 to a solenoid 25 constituting reel stand brake release means via a pin 26. 27 is cassette CA
A bell crank lever serves as a means for releasing the side reel lock, and is rotatable around the shaft 28.
In addition, as shown in FIG. 5, a pin 29 is planted at the tip of one arm, which can enter into the cassette CA through the hole 9 on the cassette CA side and engage with the tail end 7c of the lock release member 7. and the tail end 2 of the other arm
7a engages with a concave portion 21c on the side surface of the slide lever 21.

In such a configuration, when the tape is not running, the solenoid 25 is not energized, and therefore the slide lever 21 is at the end of movement in the direction opposite to the arrow B in the figure, so the brake lever 13 is moved by the spring 16. Under the action of the brake lever 17 and the action of the spring 20, the rubber pads 15, 19 at its tips, respectively,
is pressed against the outer periphery of the reel stands 11, 12 to stop the rotation of the reel stands 11, 12. At this time, the bell crank lever 27 is held so that its pin 29 does not enter the hole 9 of the cassette CA.

During tape loading or tape running, the solenoid 25 is energized and the slide lever 21 is pulled in the direction of arrow B. Then, via the pin 22, the brake lever 13 moves clockwise against the spring 16, and the brake lever 17 moves clockwise against the spring 22.
The rubber pads 15 and 19 at the tips of the reel pads 11 and 12 are rotated counterclockwise against the
The brakes on the reel stands 11 and 12 are released. At the same time, the bell crank lever 2 is engaged with the concave portion 21c of the slide lever 21.
7 is rotated about the shaft 28 in the direction of arrow C in FIG. Then, the planting pin 2 on the lever 27
9 enters into the cassette CA through the hole 9 of the cassette CA, pushes the tail end 7c of the reel lock release member 7, and rotates it clockwise around the shaft 8 (Figs. 1 and 3). , release the reel lock.

Thus, in one embodiment of the present invention, even when the cassette CA is loaded in the VTR, the
As long as the reel stand on the side is braked, the reel lock on the cassette side will not be released, and the reel lock on the cassette side will only be released when the brake on the reel stand on the VTR side is released.

As an example, the present invention will be applied to a cassette type VTR.
Although an example of application has been shown, it goes without saying that the present invention can be widely applied to other recording and/or reproducing apparatuses such as audio tape recorders. Further, the specific configuration of the device is not limited to the illustrated configuration, and various modifications can be made.

(Effects) As described in detail above, the recording and/or reproducing apparatus of the present invention has an extremely simple configuration and allows the tape reel on the cassette side to be unlocked for the minimum necessary period. - A cassette-type recording and/or playback device that is safe and easy to handle, eliminating all of the various inconveniences that have been seen in the past, such as the tape sagging even when an external force is applied while the cassette is still loaded. is obtained.

[Brief explanation of the drawing]

FIGS. 1, 2 and 3 illustrate a tape cassette used in one embodiment of the present invention, in particular:
A perspective view, a plan view and a side view of the main parts of the locking mechanism for the tape reel, and FIGS. 4 and 5 show an embodiment of the present invention for the tape cassettes shown in FIGS. 1 to 3. , especially a plan view and a side view of main parts related to the present invention. CA...Tape/cassette, 1, 2...Tape/reel lower flange, 1a, 2a...Irregularities on the outer periphery of the flange, 3-6...Components of the reel lock mechanism, 7...Reel lock release member ,1
1, 12... Reel drive means, 13-20... Components of braking means, 21-26... Components of brake release means, 27-29... Components of reel lock release means.

Claims (1)

[Scope of Claims] 1. A device using a tape cassette equipped with a locking mechanism for the tape reel, which comprises: a reel stand for driving the tape reel on the cassette side; and a reel stand for braking the reel stand. a brake mechanism; a brake release mechanism that releases the brake applied by the brake mechanism; a lock release mechanism that unlocks the tape/reel on the cassette side; and an interlock that mechanically interlocks the brake release mechanism and the lock release mechanism. A recording and/or reproducing device characterized by comprising a mechanism.