JPH01124142A - Rotary head type recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a stabilized tape traveling with easy adjustment by providing the tape guide pin of aligning type by press-fitting to the tape traveling between a tape loading guide roller and an inclined guide pin and movably supported toward the tape face. CONSTITUTION:The tape loading guide means consisting of the tape guide drums 1, 2 having a rotary head, the tape loading guide rollers 3, 4 guiding the travel by winding a tape 7 in the specified quantity and inclined guide pins 5, 6 and the aligning type table guide pins 15, 17 press-fitting to the tape 7 traveling between the tape loading guide rollers 3, 4 and inclined guide pins 5, 6 and movably supported toward the tape face are provided. Since the distribution state of the tension in the tape width direction is not varied abruptly by the aligning action of an inserted aligning type tape guide pin even when there is any difference in the tapes to be used or the tape elongated at one side partially comes in the traveling with stabilized lead running along and head touch as well is thus made obtainable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a large rotary head recording and reproducing apparatus used in video tape recorders, digital audio tape recorders, and the like.

2. Description of the Related Art In recent years, rotary head type recording and reproducing devices have been used not only in video tape recorders but also in digital audio recorders and the like, and there has been a demand for smaller size and higher performance.

An example of the above-mentioned conventional rotary head type recording/reproducing device will be described below with reference to the drawings.

FIG. 6 shows the top of a conventional rotary head type recording/reproducing device. In Figure 6, 1 and 2 are tape guide drums with rotating heads, 3.4 is a tape loading guide roller, and 6.6 is an inclined guide pin, which wraps a predetermined amount of tape around the rotating head drum and runs it. invite. T is a tape that runs in the direction of the arrow during recording and reproduction.

FIG. 7 is a front view of the tape 7, in which an upper flange 8 and a lower flange 9 regulate the upper and lower end positions of the tape 7 that is wound around the tape loading guide roller 3 on the entry side and travels. Similarly, 10° and 11 are the upper end positions of the tapes that are wound around the tape loading guide roller 4 on the output side and run.

These are the upper 7 langes and the lower flange that regulate the lower end position. 1
2.13 is the tape loading guide rollers 3 and 4;
It supports the inclined guide pin 5.6 and moves when loading and unloading the tape 7. Reference numeral 14 denotes a tape running guide lead provided on the lower tape guide drum 2.

With the above configuration, tape 7 is read 1.
In order to ensure that the rotating head (not shown) and the tape are in contact with each other within the entire contact travel range, the perpendicularity and installation height of the tape loading guide rollers 3 and 4 must be adjusted. However, the mounting angle of the inclined guide pin 6.6 had to be set with extremely high precision and fine adjustment was required. That is, depending on the height and inclination of the tape loading guide rollers 3 and 4, the inclination of the inclined guide pins 6 and 6, etc., the lead 1 is placed on the tape 7.
It was necessary to always maintain a constant distribution of tension in the width direction of the tape 7 while generating a force along the width of the tape 7.

Problems to be Solved by the Invention However, with the above-mentioned configuration, high precision is required for each part, and extremely fine adjustments are required. However, there was a problem in that it was not possible to obtain a proper running condition.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a rotary head type recording/reproducing device that is easy to adjust and provides stable tape running.

Means for Solving the Problems In order to solve the above-mentioned problems, the rotary head type recording/reproducing apparatus of the present invention includes a tape guide drum having a rotary head, and a predetermined amount of tape wound around the tape guide drum for running. A tape loading guide means consisting of a guiding tape loading guide roller and an inclined guide pin, and an alignment type that is in pressure contact with the tape running between the tape loading guide roller and the inclined guide pin and is rotatably supported toward the tape surface. It has a structure called a tape guide bin.

With the above-described configuration, the present invention maintains the tension distribution state in the tape width direction by the alignment action of the inserted alignment type tape guide bin, even if the tapes used are different or the tape is partially stretched to one side. Since there is no sudden change in the speed, stable running can be achieved in terms of lead response and head touch.

Embodiment Hereinafter, a rotary head type recording/reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a top view of a rotary head type recording/reproducing apparatus according to an embodiment of the present invention. In the figures, the same numbers are given to parts common to the conventional example. In the figure, reference numeral 16 indicates an alignment type tape guide bin provided on the entry side, and reference numeral 16 indicates its pivot shaft. Similarly, 17 is an alignment type tape guide bin provided on the exit side, 18 is a rotating support shaft, and each tape loading guide roller 3.4,
It is in pressure contact with the tape 7 between the inclined guide pins 5 and 6, and is pivotably supported on a chassis (not shown) so as to be rotatable toward the surface of the tape 7. Figure 2 is a front view of the pivot shaft 16.18.
is approximately equal to the height of the center of the width of the tape 7.

As described above, according to this embodiment, the alignment type tape guide pins 15 and 17 rotate and maintain balance so that the tension in the upper half of the tape 7 and the tension in the lower half of the tape 7 are always equal. Even if a tape is stretched on one side, even if the tension of the tape supplied using a different tape cassette changes slightly, the tape tension near one end of the rapidly running tape will not be at all. Lead 14 when the tape is gone
This eliminates the fear that the head will not be able to follow the ball properly or that the head touch will be incomplete. Also, since it is installed on both the entry and exit sides, troubles may occur due to factors on the entry side.

It is possible to deal with troubles caused by factors on the outgoing side and troubles caused by factors between both parties, but depending on the case, it may be possible to deal with problems that occur during the winter of either one of them.

FIG. 3 is a side cross-sectional view of an embodiment of the alignment type tape guide pin 16, in which 19 is an alignment tape guide member, 20 is a tape guide support shaft, 21 is a rotation support shaft, and 22 is a chassis. With this configuration, the alignment chive guide member 19
can be rotated about the rotation support shaft 21, aligned, and brought into uniform contact with the surface of the tape 7. FIG. 4 is a top view of a second embodiment of the alignment type tape guide pin 16, in which 23 is a support member, 24 is a mounting portion of the support member 23, and 26 is an alignment tape guide member, which is a part of the metal material. is curled to form a cylindrical tape suppression section. 26 is a caulking pin that functions as a pivot shaft, and 27 is a mounting screw.

FIG. 6 is a side view thereof, and 28 and 29 are projections provided on the support member 23, which restrict the rotation range of the alignment tape guide member 26. Reference numerals 30 and 31 denote tape running height regulating sections provided on the support member 23. The regulating section 30 regulates the position of the upper end of the tape 7, and the regulating section 31 regulates the position of the lower end of the tape 7. Of course, the regulating part 31 is the alignment tape guide member 2.
Although it may be provided integrally with the centering tape guide member 25, by configuring it in this way, the tape running position can be regulated to a constant position regardless of the magnitude of the inclination of the alignment tape guide member 25.

In addition, all of the above are alignment type tape guide pins 15.1
7 or rotation supports @ 16, 18 in which the alignment tape guide members 19 and 25 are provided at a height approximately equal to the center height of the tape width.
, 21.26, but if necessary, shift it upward or downward from the center of the tape width to make the tension distribution uneven in the width direction of the tape 7. For example, on the entry side, the position of the pivot shaft can be changed. The tape tension is set at the bottom and near the soil on the exit side, and the tape tension on the entry side is made strong on the bottom side and weak on the top side.Conversely, on the exit side, the tape tension is made strong on the top side and weak on the bottom side. It is possible to ensure the contact between the rotary head and the tape 7 at the lower end of the tape, and also ensure the contact between the rotary head and the tape end at the upper end of the tape on the output side.

Moreover, when the position of the rotation support shaft 26 is shifted upward or downward from the center height of the width of the tape 7, the tape 7 tends to run downward or upward, so the restriction part 31 or It is also possible to use only one of the 30.

In addition, the tape loading guide roller 3.4 and the flanges 8, 9, 10.11 above and below the tape loading guide roller 3.4 are designed to absorb all the variations in the dimensions of individual parts and obtain optimal running conditions.
It is preferable that the centering type tape guide 16, 17 is adjustable in the assembled state and/or in either direction.

Effects of the Invention As described above, the present invention provides a tape loading guide means comprising a tape guide drum having a rotating head, a tape loading guide roller and an inclined guide pin that wrap a predetermined amount of tape around the tape guide drum and guide its running. By providing a tape loading guide roller and a tilted guide bin with an alignment type tape guide pin that is in pressure contact with the running tape and is rotatably supported toward the tape surface, the tape width direction of the running tape is adjusted. Since the distribution state of the tape tension can be kept constant at all times without sudden changes, tape lead overflow and head touch can be ensured.

[Brief explanation of the drawing]

FIG. 1 is a top view of a rotary head type recording/reproducing device according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side sectional view showing an embodiment of an alignment type tape guide pin, and FIG. 4 5 is a top view of another embodiment of the alignment type tape guide pin, FIG. 5 is a side view thereof, FIG. 6 is a top view of a conventional rotary head type recording/reproducing device, and FIG. 7 is a front view thereof. 1.2...Tape guide drum, 3.4...
...Tape loading guide roller, 5.6...
... Inclined guide pin, 7 ... Tape, 15.
17. River...Adjustable tape guide pin, 19, 25.
Mountain: Alignment tape guide member. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 6
Picture Rihe C Soe 0tsuro

Claims (7)

[Claims] (1) A tape loading guide means consisting of a tape guide drum having a rotating head, a tape loading guide roller that wraps a predetermined amount of tape around the tape guide drum and guides its running, and an inclined guide pin, and a tape loading guide roller and an inclined guide pin. A rotary head type recording/reproducing device comprising: a centering type tape guide pin which is in pressure contact with a tape traveling between the guide pin and is rotatably supported toward the tape surface. (2) The rotary head type recording and reproducing apparatus according to claim 1, further comprising an alignment type tape guide pin on the chassis. (3) The rotary head type recording and reproducing apparatus as set forth in claim 1, characterized in that alignment type tape guide pins are provided on both the inlet side and the outlet side of the tape guide drum. (4) The rotary head type recording/reproducing apparatus according to claim 1, wherein the rotational support shaft of the alignment type tape guide pin is set at approximately the center height of the running tape width. (5) The rotation according to claim 2, characterized in that the position of the pivot shaft of the alignment type tape guide pin is relatively shifted downward on the entry side and upward on the exit side. Head type recording/playback device. (6) The rotary head type recording and reproducing device according to claim 1, wherein the alignment type tape guide pin is provided with a tape running height regulating member either integrally or separately. Device. (7) The rotary head type recording and reproducing apparatus according to claim 1, wherein at least one of the tape loading guide roller and the centering type tape guide pin is provided with a height adjusting means.