JPH0654571B2 - Magnetic recording / reproducing device - Google Patents

Description

The present invention relates to a magnetic recording / reproducing apparatus such as a video tape recorder.

(B) Prior Art Conventionally, as a tape guide mechanism of this type of magnetic recording / reproducing apparatus, there is one disclosed in, for example, Japanese Patent Laid-Open No. 60-19659.

This is such that a fixed guide is hung vertically on the same substrate as the tape guide cylinder so as to be located between the inclined guide and the folding guide roller, and the tape running is regulated by the fixed guide which is easier to achieve higher accuracy than the folding guide roller. To do.

However, in the case of the above-mentioned conventional example, if the rotation of the tilt guide is corrected so that the tape travels in the ideal position at the predetermined position of the tape guide cylinder, an error may occur in the winding angle of the tape around the tilt guide. May occur, and the tape running between the tilt guide and the folding roller may not be parallel to the substrate. In this case, the tape can be covered by the elasticity of the tape to a certain extent, but if it is largely displaced, the tape is folded due to the flange portion for controlling the height of the folding roller.

(C) Problems to be Solved by the Invention The present invention has been made in view of the drawbacks of the above-mentioned conventional examples,
It is an object of the present invention to provide a magnetic recording / reproducing apparatus in which a tape running between an inclined guide and a folding roller is parallel to a substrate and the tape runs in an ideal state.

(D) Means for solving the problem An adjustment guide is provided between the tilt guide and the folding guide roller.

(E) Action By providing the adjusting guide as described above, the winding angle of the tape with respect to the inclined guide can be adjusted.

(F) Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of the essential parts of the magnetic recording / reproducing apparatus of this embodiment, and FIG. 2 is a plan view showing the overall structure of the magnetic recording / reproducing apparatus.

In FIG. 2, (1) is a cylindrical tape guide cylinder (hereinafter referred to as a cylinder) that is provided at a predetermined angle with respect to the substrate, and this cylinder (1) is fixed by a cylinder base. And a lower cylinder, and an upper cylinder that rotates using the cylinder as a bearing. (2a) and (2b) are tilt guides located on the left and right sides of the cylinder (1), respectively, and the magnetic tape (3) that has run horizontally is guided by the tape guide side tilt guide (2a) to the cylinder (1). The magnetic tape (3) from the cylinder (1) is returned to a horizontal position again by the tape winding-side tilt guide (2b) while being turned to a predetermined tilt angle along the predetermined position. (Four
Reference numerals a) and 4b are folding guide rollers located on the side opposite to the cylinder (1) with respect to the tilt guides (2a) and (2b). The guide roller (4a) includes a tension regulator (6), a tape guide (7) (8), a full width erasing head (9) and an impedance roller (10a) from the supply reel of the tape cassette (5) loaded in a predetermined position. ), The traveling direction of the magnetic tape (3) is changed to the inclined guide (2a) side without increasing the tape tension. In addition, the other folding guide roller (4b) is used to
The magnetic tape (3) whose running direction has been changed in the same way as (4a),
Impedance roller (10b), AG head (11), tape guide (2), capstan (13), and pinch roller (14)
It is taken up by the take-up reel of the tape cassette (5) via. In addition, the tilt guide (2a) and the folding guide roller (4
a), the tilt guide (2b) and the folding guide roller (4b),
It is provided on the same bracket (20a) (20b). Also,
The tilt guides (2a) (2b) and the folding guide rollers (4a) (4b)
Brackets (16a) and (16b) provided with adjustment guides (15a) and (15b) are provided between and.

Since the adjustment guides (15a) and (15b) are symmetrical with respect to the cylinder (1), the adjustment guide (15b) on the winding side will be described here. The adjustment guide (15b) is vertically fixed to the bracket (16b) as shown in FIG. 2, and the bracket (16b) is screwed so that it is parallel to the board on which the cylinder (1) is mounted. It is attached by (17b) and is rotatable around the screw (17b). Further, (18) is a recess for fitting the driver, and (19) and (19) are projections for positioning the driver.

Next, adjustment of the tape guide mechanism on the winding side of the magnetic recording apparatus of this embodiment will be described.

As is well known, the tilt guide (2b) and the guide (4b) are mounted on a bracket (20b) which moves around the guide cylinder so as to function as a tape loading guide. For adjustment, rotate the bracket (20b) at the loading position by rotating it around the folding guide (4b) so that the magnetic tape (3) travels in an ideal state with respect to the cylinder (1). The tape contact state of the tilt guide (2b) is adjusted in view of the reproduction output envelope. Next, the flange portion (21) of the folding guide (4b) regulates the height of the magnetic tape (3). However, in this state, the magnetic tape
(3) runs at the normal position with respect to the cylinder (1),
The magnetic tape (3) exiting the inclined guide (2b) may not run parallel to the substrate, and in order to fix this, insert a screwdriver into the recess (18) of the bracket (16b),
By rotating the bracket (16b) around the screw (12b) by rotating the driver with the protrusions (19) and (19) as fulcrums, the adjustment guide (15b) is moved to move the magnetic tape ( Adjust the winding angle of the tilt guide (2b) of 3) so that the magnetic tape (3) is parallel to the substrate. The adjustment of the tape guide mechanism on the supply side is the same as on the winding side.

In the magnetic recording / reproducing apparatus as described above, the bracket (16a)
By moving the adjustment guides (15a) and (15b) provided on (16b), the winding angle of the magnetic tape (3) with respect to the tilt guides (2a) and (2b) is changed, and the magnetic tape (3) is moved to the cylinder (1 It is possible to adjust so that the vehicle travels ideally with respect to), and also travels in parallel to the board on which the cylinder (1) is mounted.

(G) Effect of the Invention According to the present invention, the magnetic tape runs ideally with respect to the cylinder, and moreover, by adjusting the winding angle of the magnetic tape with respect to the tilt guide, the tilt guide and the folding guide roller are provided. It is possible to provide a magnetic recording / reproducing apparatus in which the magnetic tape running between the magnetic tape and the magnetic tape travels in parallel with the substrate provided with the cylinder to prevent the magnetic tape from being bent at the collar portion of the folding roller.

[Brief description of drawings]

The drawings are all related to the invention. FIG. 1 is a plan view showing a tape running mechanism on a winding side of a magnetic recording / reproducing apparatus, and FIG. 2 is a plan view showing the entire tape running mechanism. (1)… Tape guide cylinder, (2a) (2b)… Inclination guide, (3)
… Magnetic tape, (4a) (4b)… Folding guide roller, (15a)
(15b)… Adjustment guide.

Claims (1)

[Claims] 1. A tape guide cylinder provided with a head is provided with inclined guides and folding guide rollers on both sides, and a tape winding angle with respect to the inclined guide is adjusted between the inclined guides and the folding guide rollers. A magnetic recording / reproducing apparatus provided with an enabling guide.