JPS6247858A - Tape loading device - Google Patents

Abstract

PURPOSE:To ensure a stable tape loading action by giving a slope to the rubbing surface of a guide roller base which works along a guide groove so that a guide roller tilts in the tape draw-out direction and then loading a tape. CONSTITUTION:A sloping surface 4c is prepared for the rubbing surface of a guide roller base 4 and therefore the base 4 rubs a guide roller 4a with a sloping angle theta. Thus a tape 2 can be loaded with control given from the flange even in case the large tension is produced from the dimensional variance of a plate spring 20 or a draw-out action of the tape 2 to produce the force to tilt the roller 4a backward. However the tape winding angle to a cylinder 9 is large in case the cylinder diameter is especially small. This causes a large degree of twist to the tape 2 under loading and the tape loading action is unstable. In this respect, the roller 4a is tilted forward owing to the sloping tape rubbing surface 4c of the base 4. As a result, the tape 2 can be loaded with high stability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a tape loading device that pulls out a tape from a cassette and y) and attaches it to a predetermined tape running path.

[Background of the invention]

Conventional devices that pull out and load tapes include so-called parallel loading devices and devices such as those shown in Japanese Patent Application Laid-Open No. 60-20551, but they increase the wrapping angle of the tape around the cylinder. When the tape is wrapped around the cylinder during loading, the tape becomes highly twisted, creating an unstable situation. Therefore, when the guide roller base that has the guide bin and guide roller that pulls out the tape moves, the tension of the tape causes it to topple over by the amount of play that has been taken to provide operating margin, making it even more unstable, and in the worst case. Since there are cases where the tape is loaded while riding on the 7 lunges of the guide roller, it was necessary to solve this unstable loading state.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a tape loading device that eliminates the unstable state of the tape during loading and can perform stable tape loading operations.

[Summary of the invention]

The present invention provides an inclined surface for sliding along a guide groove so that when a guide roller base having a guide pin and a guide roller for pulling out the tape moves in the tape drawing direction, the guide roller tilts forward. As a result, when the tape is in an unstable state during loading, the tape is regulated by the upper flange of the guide roller, and the tape can be loaded stably.

[Embodiments of the invention]

An embodiment of the present invention will be described using FIGS. 1 to 6.

The tape 2 in the cassette 1 is in the position shown in FIG. 1 when the cassette 1 is in the device state.

When the tape loading operation is performed, the tape 2 is moved between a pair of guide roller blocks 3 having rollers and inclined pins.
．． 4, an id pin arm 5 having an inclined pin, and a T arm 6 having a tension correction pin move from their positions in the cassette 1 and reach a predetermined tape running state position, thereby causing the tape to run as shown in FIG. It will be in bus form. At this time, the tape 2 includes a full-width erasing head 7 and an impedance roller 8.
, rotating cylinder 9, guide A10.

It is attached to the audio control head 11 and the kite B 12, respectively, and enters a steady running state until it is driven by the pressing of the A pinch roller (not shown) against the capstan.

The guide roller blocks 3 and 4 include a guide hole 15a provided in the chassis 15, a guide 16, and a guide rail hole 13.
It is held in such a manner that it can be slid along the guide hole or guide while being held down with a looseness by a leaf spring 20. The full-width erasing head 7 has a shaft 1 fixed to the chassis 15.
A guide A10, an audio control head 11,
The guide B12 is mounted on the same arm so as to be rotatable around a shaft 19 fixed to the chassis 15.

Figure 3 shows the state in which the tape 2 is wrapped around the cylinder 9 during loading, and as the tape 2 is twisted, the winding state is unstable and the tape 2 behaves as if it were lifted in the direction of the arrow. Figure 4 is a side view of the conventional guide roller base 4' on the take-up side during loading. The force is transmitted by an articulated link 21 engaged with the shaft of the motor. In this case, the tape 2 is pulled out while being regulated by the flange portion of the guide roller 4a', and the pressing force by the leaf spring 20 is acting against the force that causes the guide roller 4a' to tilt backward due to the tension caused by pulling out the tape.

FIG. 6 is a side view showing an example of the actual operating state of the conventional guide roller base 4' on the take-up side during loading. Force to tilt 4'a backward (
The guide roller base 4' slides while the guide roller 4'a is tilted by an angle θ due to the action of the arrow shown in the figure.

At this time, play δ occurs between the guide rail and the guide roller base 4', and it is impossible to completely eliminate this δ because the sliding loss of the guide roller base 4' will be extremely large. Reeds, tape 2 is guide roller 4'
It is not restricted by the 7 flange part of the IL, and it is loaded while riding on top of it, and there is a possibility that it may be damaged by the difference in level between the flange part and the roller part.

As shown in FIG. 5, in this embodiment, the guide roller base 4
The sliding surface of 4c is a slope 4c, and the guide roller base 4 is configured to slide with the guide roller 4a tilted at an angle θ in advance. Even if a large force acts to tilt the guide roller 4a backward, the tape 2 can be loaded without being restricted by the 7 lunges. In particular, when a small diameter cylinder is used as in this embodiment, the wrapping angle of the tape 2 around the cylinder 9 is large, the tape 2 is twisted greatly during loading, and the guide roller base 9 is in an unstable state. Configuring the guide roller 4a to tilt forward by making the sliding surface 4c a slope has the great effect of making stable tape loading possible.

In this embodiment, θ is approximately 2.5°, and the tape is sufficiently regulated by seven lunges during loading. Also, the positioning surface when loading is complete is
Since the surface 4b perpendicular to the guide roller is used, the same precision in position reproducibility as before is maintained. In the figure, only the guide roller base on the take-up side is shown, but the supply side is also provided with a slope.

〔Effect of the invention〕

According to the present invention, the sliding surface of the guide roller base that operates along the guide groove is made sloped so that the guide roller is tilted forward in the tape pulling direction, and the loading operation is performed. This method has the great effect of regulating the unstable state of the tape when the tape is wound around a cylinder and is highly twisted, thereby enabling stable tape loading.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the mechanism that implements the present invention in a stopped state, Fig. 2 is a plan view of the mechanism shown in Fig. 1 in a fully loaded state, and Fig. 3 is a partial view of the mechanism shown in Fig. 1 in the middle of tape rope ink. 4 and 6 are side views showing a conventional guide roller base in the middle of tape loading, and FIG. 5 is a side view of a guide roller base according to an embodiment of the present invention. 2... Tape, 3... Guide roller base 3', 4... Guide roller base 15a... Guide hole, 13... Guide rail hole, 9... Cylinder.

Claims (1)

[Claims] A magnetic recording and reproducing apparatus that pulls out a tape from a tape cassette and attaches the tape to a predetermined tape running path includes a pair of guide roller bases having a guide pin and a guide roller for pulling out the tape, and a pair of guide roller bases on which the guide roller bases operate. It has a guide groove, and the sliding surface that moves along the guide groove is sloped so that the guide roller tilts forward when the guide roller base moves in the tape pulling direction, thereby stabilizing the behavior when loading the tape. A tape loading device characterized by being designed to be