JPH02218049A - Tape traveling device - Google Patents

Abstract

PURPOSE:To adjust the height of a tape through only the adjustment of a rotary head type drum, and to facilitate the working of a pole base by arranging screws for the height adjusting and the inclining of the rotary head type drum and a coil spring on a rotary drum fitting base. CONSTITUTION:The screw 3 for adjusting the height of the rotary head type drum 1 and the screws 5a, 5b for inclining it and the coil spring 4 are fitted on the rotary head type drum fitting base 2. Rotary roller type guides 8 and inclined fixed guides 9 whose precision is perfected beforehand so as to be a standard are assembled in an entry side pole base 6 and an exit side pole base 7 respectively. Thus, tape height adjustment at two spots and slant adjustment at two spots are performed. Besides, the shape of the pole base 6, 7 is simple, and it can be selected as the standard of fitting, and the surface of the fitting base need scarcely be worked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape running device that draws out a tape from a cartridge and runs the tape while tilting the tape relative to a rotating head type drum.

[Prior Art] 12 [ ] is a side view of a tape running device using a conventional M loading mechanism, and in the figure, 21 is a rotating tape drum;
22 is a rotating head type drum mounting base, 23 and 24 are ball bases, 28 is a rotating roller type tape guide, 29 is an inclined fixed type tape guide, 28a is a flange part of the rotating roller type tape guide, and 28b is this flange part. 28a
28c is a set screw portion.

Conventionally, a tape running device for a digital audio recorder (DAT) or a video tape recorder (VTR) that uses an M loading mechanism has a rotating row type tape before and after a rotating head type tram 21, as shown in Fig. 2. Ball bases 23 and 24 are disposed on which the guide 28 and the inclined fixed type tape guide 29 are respectively implanted, and the rotating roller type tape guide 28 has a flange portion 28a that regulates the height of the tape, and is generally It had a height adjustment mechanism 28b using a screw device and a set screw portion 28C for fixing the shaft of the rotating roller type tape guide 28 after adjustment.

[Problems to be Solved by the Invention] As mentioned above, in the conventional tape running device, the structure and processing of the ball bases attached to the front and back of the rotating head drum are complicated, the cost is high, and the adjustment is difficult. It is necessary to conduct two guides. In addition, when adjusting the assembly standard to select the tilting table of the rotating head type drum, it is said that it is impossible to adjust the tilting direction of the tilting post because the mechanism becomes more complicated and adjustment is difficult. There is an opening.

The present invention has been made in order to solve such problems, and an object of the present invention is to provide a tape running device in which the height of the tape can be adjusted only by adjusting the head type drum that rotates once, and furthermore, the ball base can be easily processed. With the goal.

[Means for Solving the Problems] In order to achieve the above object, the tape running device of the present invention includes a screw for adjusting the height of the rotary head drum and a screw for tilting the rotary head drum on the rotary head drum mounting base. It is equipped with a screw and a coil spring.

[Function] With the above configuration, the tape heights tIIM and 2 can be adjusted by adjusting only the rotary head drum.
The shape of the two ball bases is simple and allows for adjustment of the inclination of the parts, and it can be selected as the mounting standard, and there is almost no need for surface machining of the rotating head type drum mounting base, which requires precision. became.

[Embodiment] FIG. 1 is a side view showing an embodiment of a tape running device according to the present invention. In the figure, 1 is a rotating head type drum, 2
The rotary head type drum is mounted on the rotary head type drum mounting base with a height adjustment screw 3, a coil spring 4, and rotary head type drum tilting screws 5a and 5b. 3 are placed at two locations on the front and back of the plane of the paper of the two-turn type tram l in FIG.

6 is the entrance side ball base, 7 is the exit side ball base, and the rotating roller type tape guide 8 and the tilted fixed guide 9, which have been precisely adjusted to the standard, are connected to the entrance side ball base 6 and the exit side ball base, respectively. Built into base 7.

Further, although FIG. 1 shows an example of a case where a rotary head type drum is attached from below, in the case of a rotary head type drum with a mounting flange, it can be similarly attached to a rotary head type drum mounting base from the upper side.

[Effects of the Invention] As explained above, the installation adjustment of the rotary head type tram of the present invention is achieved by installing a screw for adjusting the height of the rotary head type tram on the rotary head drum mounting base and a rotary head type drum tilting screw. By arranging the screw and coil spring, there is no need to adjust the rotating roller type tape guide at two locations, and the ball base has a simple structure, and it is easier to achieve accuracy as a single assembly standard.

In addition, the use of coil springs alleviated stress concentration when attaching the rotating head type drum, resulting in improved accuracy without distortion. Furthermore, the 5-rotation head type drum screw makes it possible to adjust the inclination, which was previously impossible, and the two height adjustment screws also make it possible to adjust the inclination of the rotary hecht type drum in the front-rear direction as shown in Figure 1. It happened

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a tape running device according to the present invention, and FIG. 2 is a side view of a tape running device using a conventional M loading Ijl: structure. In the figure. Rotating head type drum 2: Rotating head type drum mounting base 3: Height adjustment screw 4: Coil springs 5a, 5b: Falling adjustment screw 67 Inlet side ball base 7: Outlet side ball base 8: Rotating roller type tape guide 9 : Fixed tilt tape guide agent Patent attorney 1) Haru Kitatake

Claims (1)

[Claims] A tape running device characterized in that a screw for adjusting the height of a rotary head drum, a screw for tilting the rotary head drum, and a coil spring are arranged on a rotary head drum mounting base.