JPH03230351A - Magnetic recording and reproducing device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a reel hub having teeth on the outer periphery.
The present invention relates to a magnetic recording/reproducing device using SOTO.

BACKGROUND OF THE INVENTION In recent years, magnetic recording and reproducing devices have become more popular, and users are increasingly demanding devices that are easier to use.

An example of a conventional magnetic recording/reproducing device will be described below with reference to the drawings.

In FIGS. 9 and 10, reference numeral 1 denotes a reel hub having teeth 1a on its outer periphery, and the reel hub 1 is housed in a cassette 3 with a tape 2 wound thereon. The reel hub 1 is held so that it can be driven from the outside via teeth 1a on its outer periphery.

Reference numeral 4 denotes a roller provided in the cassette 3 for guiding the tape 2. The above is a description of the configuration of the tape cassette.

Next, on the magnetic recording and reproducing device side, 5 is a cassette holder that holds the cassette 3, 6 is a cylinder around which the tape 2 is wound and is used for recording and reproducing, 7 is a tape guard placed on the top of the cylinder 6, and 8 is a recording and reproducing device. A post 9 that sometimes guides the tape 2 is a tape guard provided on the top of the post 8.

Next, the operation of the conventional magnetic recording/reproducing apparatus configured as described above will be explained.

First, the cassette 3 is mounted on the cassette holder 5 and held in a fixed position as shown in FIG.

At this time, the tape 2 has internal dents due to vibrations before being attached and when ``A'' is attached, and depending on the degree, the first
They are in the states a, b, and c in Figure 0.

From the state shown in FIG. 10, the cassette 23 moves in the direction of the arrow and is loaded into the magnetic recording/reproducing apparatus. At this time, if the tape 2 is slack in state a or b, the tape 2 will be guided as shown in the figure 1' while sliding on the slope provided by the tape guards 7 and 9, causing tape damage. Never. However, tape 2 or tape 1
If the tape 2 becomes large as shown in Figure 0C, tape guards 7 and 9 cannot handle the problem, and the tape 2 may not be guided to the correct position, or even if it is guided, it may cause significant bending or damage to the tape. -I decided to go to school.

For this reason, in the past, in order to prevent damage, it was necessary to have the user take up the large slack that had occurred by issuing a cautionary note or the like.

Problems to be Solved by the Invention However, with the above configuration, when a large slack occurs, the user has to wind it up, which is troublesome, and the cassette is loaded without being aware that a large slack has occurred. There was a problem that tape damage occurred.

The present invention is intended to solve these problems, and provides a magnetic recording and reproducing device that absorbs the large slack that occurs inside the cassette when loading the cassette, and makes it possible to load the cassette without causing damage to the tape. The purpose is to

Means for Solving the Problems In order to solve the problems, the present invention provides a cassette holder for holding a cassette containing a reel hub wrapped with tape and having a southern part on the outer periphery such that the southern part can be driven from the outside; comprising a member that is held by a cassette holder and engages with the teeth when the cassette enters the cassette, and when the cassette is installed in the cassette holder, the reel hub is rotated by the action of the member to take up slack in the tape; The structure is such that the member does not act on the reel hub when the cassette is taken out.

Effect of the present invention With the above-described structure, the slack in the tape that occurs inside the cassette when the cassette is installed in the cassette holder is absorbed, thereby eliminating the slack in the tape and preventing damage to the tape. ,
This allows the tape to be loaded into a magnetic recording/reproducing device.

EXAMPLES Below, 74 examples of the present invention will be explained based on the drawings.

In FIG. 1 and FIG. 2, 11 is a toothed portion 11a on the outer periphery.
This reel hub 11 is equipped with a tape 1.
2 is housed in the cassette 13 in a wound state. The reel hub 11 is held so as to be driven from the outside via teeth 11a on the outer periphery.

Reference numeral 14 denotes a roller provided in the cassette 13 to guide the tape 12. The above is an explanation of the configuration of the tape cassette.

Next, on the magnetic recording/reproducing device side, 15 is the cassette 13.
This cassette holder 15 holds an arm 16 so as to be movable and slidable. Reference numeral 17 denotes a long hole formed in the arm 16. A shaft 18 on the cassette holder 15 is fitted into the long hole 17, so that the arm 16 can rotate and slide freely.

Reference numeral 19 denotes an arm spring that applies rotational force and holding force to the arm 16 in a fixed position. 20 is a ratchet portion at the tip of the arm 16.

The operation of the magnetic recording/reproducing apparatus configured as described above will be described below with reference to FIGS. 3 to 8.

FIG. 3 shows a state in which the cassette 13 with the tape 12 greatly slackened is in the middle of being mounted on the cassette holder 15, and at this time the arm 16 is stopped at the position shown in FIG. 3 by the action of the arm spring 19. In the initial state shown in FIG. 3, the arm 16 does not act on the cassette 13 or the tape 12. When the cassette 13 enters from this state, the cassette 13 touches the cam portion 16a of the arm 16. In order to make contact, the arm 16 begins to rotate, and the ratchet portion 20 engages with the tooth portion 11a on the outer periphery of the reel hub 11, as shown in FIG.
The movement in the direction of arrow C in FIG. 4 of 3 causes the reel hub 11 to rotate in the direction of arrow C in FIG.
The state in which the cassette 13 is wound up and mounted on the cassette holder 15 is shown in FIG. In FIG. 5, the contact between the cassette 13 and the cam portion 16a of the arm 16 becomes weak, and the arm 16 returns from the state shown in FIG. 11 rotation. From this state shown in FIG. 5, the cassette 13 is loaded into the magnetic recording/reproducing apparatus, and at this time the tape 12 can be loaded in the correct position without slack.

Next, the operation of taking out the cassette 13 from the cassette holder 15 will be explained. FIG. 6 shows a state in which the cassette 13 has begun to be taken out from the cassette holder 15.

As the cassette 13 is pulled out, the arm 16 rotates in the direction of the arrow in FIG. 6, and the reel knob 11 begins to come into contact with the arm 16. However, unlike when the cassette is attached, the arm 16 moves along the elongated hole 17 together with the cassette 13 in the direction of arrow C in FIG. 4, so the reel hub 11 does not rotate. Next, when the cassette 13 is further pulled out, the cam portion 16a of the arm 16 and the cassette 13 are connected to each other as shown in FIG.
At the same time, the ratchet portion 20 is disengaged from the tooth portion 11a on the outer periphery of the reel hub 11, and the arm 16 no longer acts on the cassette 13 and the reel hub 11. Since the reel hub 11 is not rotated during the series of operations during unloading, the tape 12 does not slacken.

As described above, according to this embodiment, the cassette holder 15
By providing an arm 16 rotatably and slidably held in the cassette holder 1, the cassette 13 is
The cassette 13 can be loaded into the magnetic recording/reproducing apparatus with the tape 12 in its normal state. This makes it possible to prevent tape damage caused by large tape sag, which conventionally occurs. Moreover, since no tape slack occurs when taking out the cassette, there is no need to worry about side effects.According to the present invention, the tape slack that occurs inside the cassette can be removed by placing the cassette in the cassette holder.
After that, the cassette can be installed smoothly and without damage to the tape.

[Brief explanation of drawings]

Figures 1 to 8 show one embodiment of the present invention.
The figure is a plan view of the main part of the magnetic recording/reproducing device, Fig. 2 is a plan view of the main part of the cassette, Figs. 3 to 5 are explanatory diagrams of the operation when the cassette/soto is installed, and Figs. 6 to 8 are the cassette. FIG. 9 is a plan view of the main part showing the state when the cassette is installed in a conventional magnetic recording/reproducing apparatus, and FIG. 10 is a side view of the same. 11... Reel hub, 11a... Teeth, 12...
Tape, 13...Cassette, 14...Roller, 15...
...Cassette holder 16...Arm, 16a...
Cam part, 17... Long hole, 18... Shaft, 19... Arm spring, 20... Ratchet part. Figure f/f Cassette book! - Fig. 3 /lz Fig. 4 3 Fig. 5 2 4 /ld Fig. 6

Claims (1)

[Claims] 1. A cassette holder that holds a cassette containing a reel hub wrapped with tape and provided with teeth on the outer periphery so that the teeth can be driven from the outside, and a cassette holder that is held by this cassette holder and engages with the teeth when the cassette enters. Equipped with a member to
When the cassette is installed in the cassette holder, the reel hub is rotated by the action of the member to take up slack in the tape, and when the cassette is taken out, the member does not act on the reel hub. .