JPS61192062A - Tape loading device - Google Patents

Abstract

PURPOSE:To reduce the number of parts used by mounting a flexible material, a spring between the flexible material and a loading ring and a linkage connecting the flexible material and a mobile desk. CONSTITUTION:When reaching a prescribed position of a guide 10, a mobile desk 6 contacts the guide 10 and stops. When a loading ring 2 further rotates, a spring 22 stretches and the flexible material 30 further moves. Consequently a linkage 75 turns, the flexible material is pressed downward and elastically deformed, and by its reaction the mobile desk 6 is pressed upward and projections 13 and 14 of a reference plane 16 are pressed. Therefore, the mobile desk 6 is given a force in the direction of the spindle of a rotary drum by elasticity of the flexible material 30 and in the direction of the circumference of the rotary drum by the spring 22. Consequently a roller 4 and a guide pin 5 fixed to the mobile desk are stopped at a prescribed position at 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. FIGS. 4 to 7 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 moving platform base provided on the loading ring 2, and 9. It 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 has a pipe 71 connected to the movable table 6 at one end.
Then, one end is inserted into the other end of the pipe 71.

It is composed of a pin 72 whose other end is connected to the movable table base 3, and a spring 73 that biases the pipe 71 and the pin 72 in a direction to separate them. 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 are provided on the outer periphery of the rotating drum 15, and guide 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. Numerals 13 and 14 are protrusions provided on the movable table 6, and are pressed against the reference surface 16.

In such a configuration, when the moving table 6 moves to the left in FIG. 4 (clockwise on the outer circumference of the rotating drum 15 in FIG. 5), the tapered portion 12 comes into contact with the stopper 11, and when the moving table 6 moves further, the taper is stopped by the stopper 11. The portion 12 and therefore the movable table 6 are pushed up in the direction of the reference plane ↓ 6 (in the direction of the substantially co-rotating axis of the rotating drum 15), and are urged by the spring 73 of the connecting rod 7, so that the protrusions 13 and 14 are aligned with the reference plane ↓. Side 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 per unit increased, resulting in high costs.

[Means for solving problems]

1 to 3 show the configuration of the tape loading device of the present invention, and parts corresponding to those in FIGS. 4 and 5 are denoted by the same reference numerals, and detailed description thereof is omitted. do. That is, in the present invention, the structure of the connection between the loading ring 2 and the moving table 6 is different from that shown in FIGS. 4 to 7. A flexible member 30 is provided. The flexible member 30 can be made of, for example, an elastically deformable plate-shaped metal.

A protrusion 31 and elongated holes 32, 33 are formed in the flexible member 30. Also, the loading ring 2 has a protrusion 21.
23 and 24 are formed, a spring 22 is stretched between the protrusions 21 and 31, and the protrusions 23 and 24 are inserted into the elongated holes 32 and 33.
are inserted into each. Reference numeral 75 is a link connecting the flexible member 30 and the movable table 6, and both ends thereof are rotatable. The other configurations are the same as those shown in FIGS. 4 and 5.

[Effect]

1. 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 (clockwise in FIGS. 2 and 3). At this time, the flexible member 30 is pulled by the spring 22 and moves integrally with the loading ring 2.

The carriage 6 is thus pressed via the links 75 and moved on the guides 8.9, 10. As a result, the roller 4 and the guide pin 5 pull out the magnetic tape 46 from the cassette 45 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 outer circumference of the rotating drum 15 along the guides 9, 10. At this time, link 7
Since both ends of the movable table 5 are rotatable, there is no problem in moving the movable table 6 in the vertical direction.

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 a predetermined position on the guide 10, a predetermined portion of the movable table 6 comes into contact with a predetermined portion of the guide 10 (not shown), and the movable table 6 stops there. As the loading ring 2 further rotates, the spring 22 expands and the flexible member 30 also moves further to the left in FIG. As a result, the link 75 rotates clockwise, and the flexible member 30 is pressed downward and elastically deformed.

The reaction forces the movable base 6 upward, and the protrusions 13 and 14 of the movable base 6 are pressed against the reference surface 16.

Therefore, the movable table 6 is biased by the elastic force of the flexible member 30 approximately in the direction of the rotation axis of the rotary drum 15 (to be exact, different from the rotation axis direction), and by the spring 22 biased in the direction. As a result, the roller 4 and guide bin 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 46 is accurately wound around the rotating drum 15.

When unloading, load ring 2
is rotated in the opposite direction, and the spring 22° flexible member 30
．． The moving table 6 is pressed and moved via the link 75, and at least one of the reels 47 and 48 of the cassette 45 is driven in a direction to wind up the magnetic tape 46, so that the magnetic tape 46 is accommodated in the cassette 45.

〔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 of a magnetic recording/reproducing device, which moves a moving stage along a guide using a loading ring and winds a magnetic tape around a rotating drum, a flexible member that is slidable with respect to the loading ring; Since the spring provided between the flexible member and the loading ring and the link connecting the flexible member and the moving table are provided, the number of parts can be reduced and costs can be reduced. . Furthermore, since the configuration is simple, manufacturing and assembly work is facilitated.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a tape loading device of the present invention, FIGS. 2 and 3 are a plan view thereof, FIG. 4 is a partial side view of a conventional tape loading device, and FIG. 5 is a plan view thereof. FIG. 6 is a perspective view of the connecting rod, and FIG. 7 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
．． 21.23.24.31...Protrusion 15...Rotating drum 16...Reference surface 22...Spring 3
0...Flexible member 32.33...Long hole 75...
・More than links

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 of a magnetic recording and reproducing device, which moves the movable stage along the guide by the loading ring and winds the magnetic tape around the rotating drum, the tape loading device is flexible and slidable with respect to the loading ring. A tape loading device comprising: a member; a spring provided between the flexible member and the loading ring; and a link connecting the flexible member and the moving table.