JPS61192061A - Tape loading device - Google Patents

Abstract

PURPOSE:To reduce the number of parts used by making a hole in either a mobile desk or a loading ring and moving the mobile desk using the elasticity of a flexible material. CONSTITUTION:When a mobile desk 6 reaches a guide 10, a taper 12 of the mobile desk 6 contacts a stopper 11. When further pressed by a flexible material the stopper 11 pushes up the taper 12 and hence the mobile desk 6, and conse quently projections 13 and 14 of the mobile desk 6 pressed to a reference plane 16. Therefore, the mobile desk is given a force in the directions of the circumfer ence and the spindle of a rotary drum. Consequently, a roller 4 and a guide pin 5 fixed to the mobile desk are stopped at the prescribed position at the prescribed angle with reference to the rotary drum and a magnetic tape is wheeled precisely with reference to the rotary drum.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape loading device in a magnetic recording/reproducing device having a rotating magnetic head, such as a video tape recorder.

[Conventional technology]

2. Description of the Related Art A magnetic recording/reproducing device having a rotating magnetic head, such as a video tape recorder, requires a tape loading device for winding a magnetic tape around the rotating head. 3 to 6 show the configuration of a conventional tape loading device. In the figure, 1 is a base such as a chassis, and 2 is a loading ring. The loading ring 2 has a gear formed on its outer periphery, and is rotated on the base 1 by another gear to which it is connected. (also not shown), 3 is a movable base provided on the loading ring 2, and is movable integrally with the loading ring 2. Reference numeral 6 denotes a movable table, which is provided with rollers 4 and guide pins 5 for pulling out and guiding a magnetic tape (not shown). Reference numeral 7 denotes a connecting rod that connects the movable base 3 and the movable base 6, and the connecting portions at both ends thereof are rotatable.

In addition, the connecting rod 7 is a pipe 71 whose one end is connected to the moving table 6.
, a pin 72 whose one end is inserted through the other end of the pipe 71 and whose other end is connected to the movable table base 3, and a spring 73 which biases the pipe 71 and the pin 72 in the direction of separating them. There is. Reference numeral 8 has a guide provided substantially parallel to the base 1, 9 a guide provided continuous to the guide 8 and inclined upward from below, and 10 a reference surface 16 provided continuous to the guide 9. It is a guide. These guides 8
．． 9.10 is provided on the outer periphery of the rotating drum 15, and guides the movable table 6 obliquely from below to above the rotating drum 15. Reference numeral 11 denotes a stopper, which comes into contact with the tapered portion 12 of the movable table 6. 13
．． 14 is a protrusion provided on the movable table 6, and a reference surface 16
It is now under pressure.

In such a configuration, when the moving table 6 moves to the left in FIG. 3 (clockwise on the outer periphery of the rotating drum 15 in FIG. 4), the tapered portion 12 comes into contact with the stopper 11, and when the moving table 6 moves further, the stopper 11 causes the tapered portion 12 to contact the stopper 11. The part 12 and therefore the movable table 6 are pushed up in the direction of the reference surface 16 (approximately in the direction of the rotational axis of the rotary drum 15) and are urged by the spring 73 of the connecting rod 7, so that the protrusion 13.14 moves toward the reference surface 1.
6, the movable table 6 is positioned at a predetermined position.

[Problem that the invention seeks to solve]

However, in such a conventional configuration, the spring 73 of the connecting rod 7 obtains a biasing force for positioning the movable table 6 at a predetermined position, which makes the configuration of the connecting rod 7 complicated and difficult to manufacture and assemble. However, there was a drawback that the number of parts increased, resulting in high costs.

[Means for solving problems]

FIG. 1 shows the configuration of a tape loading device according to the present invention, and parts corresponding to those in FIGS. 3 and 4 are given the same reference numerals.

The detailed description thereof will be omitted.In the present invention, guide 8.9
．． For example, a substantially cylindrical hole 6 is provided in the movable table 6 guided by the
1 is formed. Also, loading ring 2 has 1
For example, an elastically deformable flexible member 21 such as a cylindrical stainless steel rod is implanted. The free end of the flexible member 21 is inserted into the hole 61. Note that the relationship between the flexible member 21 and the hole 61 may be reversed, that is, the flexible member may be implanted in the movable table 6 and the hole may be provided in the loading ring 2. The other configurations are the same as those shown in FIGS. 3 and 4.

[Effect]

When the gear is rotated by a motor or the like (not shown), the loading ring 2 rotates and moves to the left in FIG. 1.

At this time, since the flexible member 21 is implanted in the loading ring 2, it moves integrally with the loading ring 2. Pressed by the flexible member 21, the carriage 6 therefore moves on the guide 8.9.10. As a result, the roller 4 and the guide pin 5 pull out the magnetic tape from a cassette (not shown) and guide it. The moving table 6 moves along the guide 8 substantially parallel to the base 1, and then gradually moves obliquely upward along the guide 9, 10 over the outer shoulder of the rotating drum 15. Since the inner diameter of the hole 61 is sufficiently larger than the outer diameter of the flexible member 21, there is no problem in moving the movable table 6 in the vertical direction at this time.

The guides 8 and 9 are made of synthetic resin.

The guide 10, which is the terminal end thereof, is made of metal such as stainless steel in order to improve the accuracy of positioning the movable table 6. When the movable table 6 reaches the position of the guide 10, the tapered portion 12 of the movable table 6 comes into contact with the stopper 11. When further pressed by the flexible member 21, the stopper 11 moves to the tapered portion 12. Therefore, the moving table 6 is pushed upward. As a result, the projections 13, 14 of the movable table 6 are pressed against the reference surface 16.

Therefore, the movable table 6 is moved by the elastic force of the flexible member 21.

The rotating drum 15 is biased approximately in the same direction and approximately in the direction of the rotation axis (to be exact, different from the rotation axis direction).

As a result, the rollers 4 and guide pins 5 fixed to the movable table 6 are parked at a predetermined position and angle with respect to the rotating drum 15, and the magnetic tape is accurately wound around the rotating drum 15.

When unloading, load ring 2
is rotated in the opposite direction, the flexible member 21 presses the other inner peripheral surface of the hole 61 to move the movable table 6, and the reel of the cassette is driven in the direction to wind up the magnetic tape.
A magnetic tape is housed within the cassette. Therefore, even during unloading, the movable table 6 can move smoothly on the guides 8, 9, and 10.

As shown in FIG. 2, a spring 22 may be provided between the moving table 6 and the loading ring 2 to always bias the moving table 6 in the direction of the guides 8, 9, and 10. In this case, the biasing force of the rotating drum 15 in the substantially circumferential direction relative to the movable table 6 can be shared by the flexible member 21, and the biasing force of the rotating drum 15 substantially in the direction of the rotation axis can be shared by the spring 22. can.

〔effect〕

As described above, the present invention includes a movable base for pulling out a magnetic tape, a guide for guiding the movable base around the outer periphery of a rotating drum and parking it on a reference surface, and a loading ring for moving the movable base along the guide. In a tape loading device for a magnetic recording/reproducing device, in which a moving stage is moved along a guide by a loading ring and a magnetic tape is wound around a rotating drum, a hole is provided in one of the moving stage and the loading ring, and an elastic force is applied to the other. By inserting the flexible member into the hole and using the elastic force of the flexible member to move the movable table, the number of parts can be reduced and costs can be reduced. can be lowered. Furthermore, since the configuration is simple, manufacturing and assembly work is facilitated.

[Brief explanation of the drawing]

FIG. 1 is a partial side view of a tape loading device of the present invention, FIG. 2 is a partial side view of another embodiment, FIG. 3 is a partial side view of a conventional tape loading device, and FIG. 4 is a plan view thereof. FIG. 5 is a perspective view of the connecting rod, and FIG. 6 is a sectional view thereof. 1... Base 2... Loading ring 3...
Moving base 4...Roller 6...Moving base 7
...Connecting rod 8.9.10...Guide 11...Stopper 12...Tapered part 13.14
...Protrusion 15...Rotating drum 16...Reference surface 21...Flexible member 22...Spring 6
1...hole or more

Claims (1)

[Claims] (1) comprising a movable base for pulling out a magnetic tape, a guide for guiding the movable base to the outer periphery of a rotating drum and parking it on a reference surface, and a loading ring for moving the movable base along the guide; In a tape loading device for a magnetic recording and reproducing device, which moves the movable base along the guide by the loading ring and winds the magnetic tape around the rotating drum, a hole is provided in one of the movable base and the loading ring. A tape loading device, characterized in that a flexible member having an elastic force is provided on the other side, the flexible member is inserted into the hole, and the movable stage is moved along the guide by the loading ring.