JPH01112561A - Tape loader - Google Patents

Abstract

PURPOSE:To minimize a distance between a tape and a chassis and to form a tape loader into thin type by providing a catching mechanism and a guide post adjusting mechanism on the top of a tape guide block. CONSTITUTION:A bush 3 is force-fed with its screw part 3a and fitting part 3b into a guide block 2 of the tape guide block in the title tape loader. Then, a post unit 5 is disposed to the bush 3, while a guide pin 7 is force-fed into the guide block 2. This guide pin 7 is pressed by a ring plate 9 and guided by a guide rail 8 to move. Moreover, a detaining part of the bush 3 force-fed into the guide block 2 is caught by a guide block catcher 6 and perfectly fixed by a charge mechanism. Then, the height adjustment is carried out by turning a groove part 5a of the guide post unit 5, the distance L between the centers of the main chassis 10 and the tape 1 being hence minimized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape loading device for a magnetic recording/reproducing device such as a VTR.

[Prior art] In order to pull out a tape from a cassette and attach it to a rotating drum (hereinafter referred to as a drum), and to accurately trace the head on a video track when the tape is running, there is also a method of wrapping the tape helically around the drum. A loading mechanism is provided to configure a tape guide path that allows the tape to be loaded into the cassette and returned to the cassette without strain. It is especially important to control the vertical movement of the tape in the drum unit, and the tape is regulated by tape guide posts at the front and rear of the drum so that the tape runs smoothly along the tape guide of the lower drum in the drum unit.

3(a) and 3(b) are diagrams for explaining the outline of a conventional loading device and a loading device of the present invention, in which 1 is a tape, 4 is a capstan, 11 is a cassette containing the tape 1, and 12 is a Drum unit, 13 is a pinch roller, 14a
14e and 15 are guide posts, respectively, and 8 is a guide rail. In Fig. 3, the guide post 15 is moved by a tape guide block from the first position, which is the cassette mounting position, to the second position, which is near the drum (Fig. 3).
b) Move by means of transportation to

Further, in this case, when the tape l leaves the drum unit 12, its position is lowered, as is clear from FIG. 3(b).

2(a) and 2(b) are diagrams showing a conventional catching mechanism of the tape guide proc that constitutes the moving guide post 15 in FIG. 3; FIG. 2(a) is a side view, and FIG. (b) is a plan view. In FIG. 2, a guide pin 7 is press-fitted into the guide block 2, and is pushed by the link plate 9 and guided by the guide rail 8' to move. Further, a bushing 3' is press-fitted into the guide block 2'. Guide post unit 5' is bushing 3
', a threaded part 3'a, and a fitting part 3'b, and the height can be adjusted by turning the screw hole 5'a. The guide post unit 5' is pulled by the link plate 9 by a drive device (not shown) and moves along the guide rail 8'. Further, 10 is the main chassis, and L is the distance between the tape l and the main chassis 10.

In the tape guide block shown in FIG. 2, it is necessary to ensure a sufficient length of engagement between the guide post unit 5' and the bushing 3', so the distance fl between the tape l and the main chassis lO is
lL becomes far away.

[Problems to be Solved by the Invention] In a tape loading device having a conventional tape guide block as described above, in the case of a tape path that requires lowering the tape center at the drum exit where the tape leaves the drum, the tape Since the distance between the main chassis and the main chassis is large, a corresponding thickness is required, making it difficult to make the device thinner.

The present invention has been made to solve these problems, and an object of the present invention is to provide a tape loading device having a mechanically thin tape guide block that reduces the distance between the tape and the chassis.

[Means for Solving the Problems] In order to achieve the above object, the tape loading device of the present invention has a tape guide block catching mechanism and a guide post adjustment mechanism on the upper part of the tape bus in the tape guide post. It is equipped with a tape guide block.

[Function] With the above configuration, the post height adjustment mechanism and the catching mechanism can be placed above the guide block, which used to be a dead space, making it possible to make the entire device thinner. .

[Embodiment] FIG. 1 is a sectional view showing an embodiment of a tape guide block in a tape loading device of the present invention. 1st
In the figure, 2 is a guide block, 3 is a bushing press-fitted into the guide block 2, 3a is a threaded portion, and 3b is a fitting portion. 5 is a guide post unit connected to the pusher L3, 6 is a guide block catcher, 7 is a guide pin, and 8 is a guide rail, and FIG.

The same reference numerals as in FIG. 3 indicate the same or corresponding parts.

In FIG. 1, a guide pin 7 is press-fitted into the guide block 2, and the guide pin 7 is pushed by a link plate 9 and guided by a guide rail 8 to move. The guide block 2 catches the locking part of the press-fitted bush 3 with the guide block catcher 6, and the charging mechanism (
(not shown). The height of the guide post unit 5 is adjusted by turning the groove 5a.

According to the configuration of this embodiment, the distance raL between the main chassis 1O and the tape center becomes smaller, so that the device becomes thinner.

[Effects of the Invention] As explained above, according to the present invention, the tape loading device can be made thinner by providing the catching mechanism and the guide post adjustment mechanism on the upper part of the guide block.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a sectional view showing an embodiment of the tape guide block in the tape loading device of the present invention, and FIG.
) and (b) are views showing the conventional catching mechanism of the tape guide block that constitutes the moving guide post in Fig. 3, where (a) is a side view and (b) is a side view.
3 is a plan view, and FIGS. 3(a) and 3(b) are diagrams for explaining the outline of a conventional loading device and a loading device of the present invention. In the figure. 1: Tape 2 Guide block 3: Push 5 Guide post unit 6: Guide block catcher 7: Guide pin 8 Guide rail 9: Link plate lO: Main chassis 11: Cassette 12 Ni drum unit agent Patent attorney 1) North Haru Takeshi Figure 1 (a) (b) Figure 2

Claims (1)

[Claims] A tape loading device equipped with a tape guide block for winding a tape around a drum having a plurality of rotating heads, the tape having a tape guide block catching mechanism and a guide post adjustment mechanism above the tape path in the tape guide post. A tape loading device characterized by being equipped with a guide block.