JPS6187257A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the sum of space occupied by a rotary cylinder and a tape cassette by placing the rotary cylinder so as to enter a part of the cylinder into the opening of the tape cassette. CONSTITUTION:A tape positioning member 14, is erected at the entrance side guide base 7 and a tape positioning member 142 is erected at the exit side guide base 8. A part of a magnetic tape 4 stretched at the opening 5' is pushed to the inside of the opening 3' by the tape positioning members 141, 142. Consequently, a space is formed in front of the opening 3', and the rotary cylinder 2 is placed on a chassis 1 so that a part of the cylinder enters the space and not to touch the magnetic tape 4. The space occupied by the rotary cylinder 2 on the chassis 1 is lapped partially on the space occupied by the tape cassette 3 on the chassis. Consequently, the longitudinal length of the chassis 1 can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a helical scan type magnetic recording and reproducing device, and in particular to an opening in a magnetic tape stored in a tape cassette installed therein. [Background of the Invention] Fig. 4 is a plan view showing an example of a conventional helical scan type magnetic recording/reproducing device, in which 1 is a chassis, 2 is a rotating cylinder, and 5 is a tape cassette, S' is an opening, 4 is a magnetic tape, 5 is a supply reel, 6 is a take-up reel, 7
1 is an entry side guide base, 8 is an exit side guide base, 9 is a guide guide plate, 10 is a tension arm, 11 is an impedance roller, 12 is a capstan, and 15 is a pinch roller.

In the same figure, in a tape cassette 5, a magnetic tape 4 is stretched between a supply reel 5 and a take-up side IJ reel 6, which are arranged in parallel, and this magnetic tape 4 is exposed from an opening 5''. When this tape cassette 5 is installed in a magnetic recording/reproducing device, the inclined guides, guide rollers, pinch rollers 15, etc. provided on the entry side guide base 7 and the exit side guide base 8, respectively, close the opening 5. It penetrates inside the inner magnetic tape 4.

Therefore, when a recording or reproducing operation is performed, the inlet guide base 7 and the outlet guide base 8 move along the guide groove provided on the guide guide plate 9r, and along with this, the K, inclined guide, and guide roller are magnetized. The tape 4 is hooked and pulled out from the tape cassette 5. When the entrance guide base 7 and the exit guide base 8 come into contact with a stopper provided near the rotary cylinder 2 to set a predetermined position, the magnetic tape 4 is attached to the rotary cylinder 2 in a spiral shape over a predetermined angle. wrapped in.

Along with this, the magnetic tape 4 is connected to a tension pin provided on the tensicon arm 10 and an impedance roller 11.
．． The pinch roller 15 comes into contact with a fixed head such as an erasing head, and the pinch roller 15 also moves while hooking the magnetic tape 4, thereby pinching the capstan 12 and the magnetic tape 4.

Then, the capstan motor starts and capstan/1
When the magnetic tape 2 rotates, the magnetic tape 4 runs from the supply reel 5 to the take-up reel 6,
Two magnetic heads scan the magnetic tape 4 alternately. While the magnetic tape 4 is running, fluctuations in the tension of the magnetic tape 4 are detected by the displacement of the tension pin provided on the tensicon arm 10, and based on this, the brake means provided on the supply side reel 5 is adjusted. The tension of the magnetic tape 4 is maintained constant. Further, minute vibrations of the magnetic tape 4 in the tape longitudinal direction are absorbed by the impedance roller 11.

Incidentally, there is a strong desire for more compact magnetic recording/reproducing devices due to ease of portability and space issues, and efforts have been made to meet this demand. In order to realize this structure, the size and arrangement of each member attached to the chassis 1 are major issues, and among these, the size and arrangement relationship of the rotating cylinder 2 and tape cassette 5 are the size of the magnetic recording and reproducing device. almost determines the The size of the tape cassette 5 is determined by the standard.
Furthermore, since there is a limit to the thickness of the rotating cylinder 2, it is conceivable that the magnetic recording/reproducing device can be made smaller based on the arrangement of the tape cassette 5 and the rotating cylinder 2. The limit is that the magnetic tape should be provided as close as one degree without touching the portion of the magnetic tape stretched over the tape cassette opening 5''.

Furthermore, in the case of tape positioning (5), as is clear from FIG. It is necessary to arrange the tape cassette 5 at a certain distance from the tape cassette 5.

For these reasons, it has been difficult to further reduce the size of conventional magnetic recording and reproducing devices.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art described above, and to provide a more compact magnetic recording/reproducing device in which a part of the rotary cylinder can be accommodated within the opening of a tape cassette.

[Summary of the invention]

In order to achieve this object, the present invention provides a method for pushing the part of the magnetic tape stretched over the tape cassette opening into the depths of the opening during the tape cassette mounting process. A distinctive feature is that it is curved to form a space into which the rotating cylinder can fit.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of a magnetic recording/reproducing apparatus according to the present invention. , 142 is a tape positioning member, and parts corresponding to those in FIG. 4 are given the same reference numerals, and a description thereof will be partially omitted.

Figure 1 shows a magnetic tape 4 inside a tape cassette 5 installed.
shows that it is stored.

A tape positioning member 14° is attached to the entrance guide base 7.
Further, a tape positioning member 14 is provided on the exit side guide base 8.
□ are planted respectively, and these tape positioning members 1
4. , 142, the portion of the magnetic tape 4 stretched over the opening 3' is pushed into the back of the opening 5'. For this purpose, a space is formed in front of the opening 5', and the rotary cylinder 2 is arranged on the chassis 1 so as to partially fit into this space and not to come into contact with the magnetic tape 4. There is.

For this reason, the space occupied by the rotary cylinder 2 on the chassis 1 and the space occupied by the tape cassette 3 on the chassis partially overlap, and as a result, the length of the chassis 1 in the vertical direction is reduced by a conventional magnetic recording/reproducing device. can be shortened compared to

Note that when the magnetic tape 4 is stored in the tape cassette 5, the tape positioning member 14. .

142, the magnetic tape 4 is pushed into the back of the opening 5', but the entrance guide base 7 and the exit guide base 8 are positioned near the rotating cylinder 2, and the magnetic tape 4 is wound around the rotating cylinder 2. When the tape positioning member 14. .

14□ is away from the magnetic tape 4.

FIG. 2 shows the tape positioning member 14 of FIG. .

14. A specific example of 142 is shown in connection with the tape cassette 5. , 14□ is the inclined surface 15 is the cassette case lid, 16 is the lid opening member, and the parts corresponding to those in FIG. 1 are given the same reference numerals.

In FIG. 2, tape positioning members 141 and 142 are installed on the entrance guide base 7 and the exit guide base 8, respectively.
have an inclined surface 14 facing the tape cassette 5 at the top of each
．． ' , 14□'.

The tape cassette 5 moves in the direction of the arrow in the process of being attached to the magnetic recording/reproducing apparatus. During this movement, the lid opening member 16 is operated and the cassette case lid 15 is rotated in the direction of arrow B and opened. When the tape cassette 5 further moves in the direction indicated by the arrow, the portion of the magnetic tape 4 stretched over the opening 5' comes into contact with the tape positioning member 141.14□, and is gradually pushed into the back of the opening 5'.

Next, using FIG. 5, these tape positioning members 141
0 action (tape positioning member 14□ also has the same action)
will be explained in more detail.

When the tape cassette 3 with the cassette case lid 15 opened moves in the direction of the arrow, the magnetic tape 4 is moved to the inclined surface 14 of the tape positioning member 141. ′ in Fig. 5 (α)
), when the tape cassette 5 further moves in the direction indicated by the arrow, the magnetic tape 4 moves onto the inclined surface 14 . ' and is pushed into the back of the tape cassette 5 (FIG. 5(h)).

Then, when the tape cassette 5 further moves in the direction of the arrow, the magnetic tape 4 moves to the tape positioning member 14. The position of the magnetic tape 4 is set on this side surface connected to the inclined surface 141' (FIG. 5(C)).

After 5K, the magnetic tape 4 is pushed to the back of the opening of the tape cassette 5, and as a result, a space is created in front of this opening, and a part of the rotating cylinder is inserted into this space. You can set the position of the rotating cylinder.

In the above embodiment, the tape positioning member is provided on the entry side guide base and the exit side guide base, but the present invention is not limited to this, and as the tape positioning member,
It can also be a shaft mounted on the chassis or a movable pin. However, as described above, when the tape positioning member is provided on the entry-side guide base and the exit-side guide base, there is no need to provide a special means for moving the tape positioning member. Alternatively, the magnetic tape may be pushed into the back of the opening when starting to install the tape cassette.

〔Effect of the invention〕

As explained above, according to the present invention, by simply adding a relatively simple member, it is possible to arrange the rotary cylinder so that a part of it fits into the opening of the tape cassette, and as a result, .

It is possible to reduce the sum of the spaces occupied by the rotating cylinder and the tape cassette, and it is possible to provide a magnetic recording and reproducing device that is more compact than the prior art.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of a magnetic recording/reproducing apparatus according to the present invention, and FIG. 2 shows the tape shown in FIG. 2...Rotating cylinder, 5...Tape cassette, 5'
...Opening portion, 4...Magnetic tape, 7...Inlet guide base, 8...Outlet guide base s"1+
142... Tape positioning member. Trouble 1 Circle No. 1 Trouble 2 Hidden 3rd trouble

Claims (1)

[Claims] Pull out the magnetic tape from the installed tape cassette,
In a magnetic recording/reproducing device in which a magnetic head is spirally wound around a rotating cylinder on which a magnetic head is mounted, a portion of the magnetic tape stretched over an opening in the tape cassette during the loading process of the tape cassette or at the beginning of loading. of the opening,
1. A magnetic recording and reproducing device, comprising means for pushing the rotary cylinder toward the opening, and a portion of the rotary cylinder enters the opening.