JPH0628747A - Tape loading mechanism - Google Patents

Abstract

PURPOSE:To obtain a tape loading mechanism in which miniaturization of the device is easily realized. CONSTITUTION:A rotary head device 22 and catcher members 45a, 45b or the like are arranged on a chassis 21 being a main board. On the other hand, a supply reel 25 and a winding reel 26 are arranged to a cassette holder 36 being an auxiliary board and a cassette 23 is set thereon. While the cassette 23 is mounted on the auxiliary board, when the auxiliary board is moved on the main board in the direction of the rotary head device 22, a tape 24 of the cassette 23 is extracted so as to be wound on the rotary head device 22 by an incoming side guide base 27 and an outgoing side guide base 28. In this case, since the auxiliary board is moved so that the cassette 23 is overlapped in terms of a plane partly at least the rotary head device 22, the length l of the chassis 21 in the longitudinal direction is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape loading mechanism in a recording / reproducing apparatus and the like, and more particularly to a tape loading mechanism suitable for downsizing of the apparatus.

[0002]

2. Description of the Related Art FIG. 7 is a plan view showing an example of a conventional magnetic recording / reproducing apparatus. In the figure, 1 is a rotary head device equipped with a magnetic head, and 2 is a tape cassette. 2a, 2
Reference numeral b denotes a supply-side reel and a winding-side reel on which the magnetic tape 3 is wound in the tape cassette 2. 4 is an entrance side guide base on which an entrance side inclination guide and a guide roller are mounted, 5
Is an exit guide base having a similar shape. 6, 7 is a rack, 8 is a rack drive gear, 9 is a chassis, 10, 1
1 is a holding member (catcher), 12 is a rack spring, 31
Is an impedance roller for absorbing minute vibrations of the running magnetic tape.

The inlet side guide base 4 and the outlet side guide base 5 are connected to racks 6 and 7 made of a flexible material via rack springs 12, respectively. When the rack drive gear 8 rotates in the clockwise direction of the arrow (a), the rack 6 is driven in the right direction of the arrow (c), and the rack 7 is driven in the left direction of the arrow (b). Since the entrance side guide base 4 and the exit side guide base 5 also move as the racks 6 and 7 move, the tape cassette 2
The magnetic tape 3 is pulled out by the guide bases 4 and 5. And finally, the guide bases 4, 5
Are held by holding members 10 and 11, respectively, and the magnetic tape 3 is mounted on the rotary head device 1 equipped with a magnetic head.

[0004]

In the above-described conventional magnetic recording / reproducing apparatus, when the tape cassette 2 is mounted in the apparatus, the tape 3 stretched at the foremost part of the opening of the cassette does not come into contact with the tape cassette 2. The rotary head device 1 is arranged. Therefore, the size of the entire apparatus such as a recording / reproducing apparatus having a tape loading mechanism is not smaller than that of the combined cassette 2 and rotary head apparatus 1 used, and there is a drawback that there is a limit to downsizing. It was

An object of the present invention is to provide a tape loading mechanism which can solve the above-mentioned disadvantages of the prior art and easily realize the miniaturization of the apparatus.

[0006]

In order to achieve the above-mentioned object, the present invention has a structure in which a main substrate having a rotary head device attached thereto and a tape which is moved by a loading member to wind a tape around the outer periphery of the rotary head device. In a tape loading mechanism including a tape guide means and an auxiliary substrate having a structure in which a reel stand for holding a tape cassette is placed and moved so as to overlap with the substrate, the auxiliary substrate is configured to rotate the tape cassette. The tape guide means is configured to move to a position overlapping at least a part of the head device in a plane, and the tape guide means is moved together with the movement of the auxiliary substrate, and the tape guide means is moved by the loading member. It is characterized in that the configuration has two sections.

[0007]

According to the present invention, when the auxiliary substrate on which the reel stand for holding the tape cassette is placed is moved so as to overlap the main substrate, the auxiliary substrate is such that the tape cassette is at least a part of the rotary head device. Since it moves to a position where it overlaps in a plane, the device can be downsized in the operating state.

[0008]

EXAMPLES The present invention will be described below with reference to examples.
FIG. 1 shows a perspective view of a main part of an embodiment of the present invention. FIG. 1 shows a state in which a cassette is mounted on the magnetic recording / reproducing apparatus of this embodiment.

In the figure, 21 is a chassis as a main substrate, 22 is a rotary head device on which a magnetic head is mounted, and 23
Is a cassette mounted on a cassette holder (auxiliary substrate) not shown. 24 indicates a magnetic tape, 2
Reference numeral 5 indicates a supply side reel around which the magnetic tape 4 is wound, and 26 indicates a winding side reel. Reference numeral 27 denotes an inlet side guide base on which an inlet side inclined guide and a guide roller are mounted, and 28 denotes an outlet side guide base having the same structure.

Further, 29 is a drawer guide guide plate, 30
Is a tension pin that detects the tension of the running magnetic tape, and 32 is a pinch roller that is pressed against the capstan during recording / reproduction to convey the magnetic tape. Further, 33 is a guide moving arm, 34 is a guide moving arm continuous pin, and 35 is a guide moving ring.

As is apparent from FIG. 1, a feature of the present embodiment is that a part of the cassette holder is configured to protrude from the chassis 21 when the cassette is mounted on the cassette holder.

FIG. 2 is a perspective view for explaining the cassette holder 36 in more detail. In the figure, 37 is a reel stand, 38 is a reel stand brake, and 39 is a reel stand brake plunger.

The cassette holder 36 has L-shaped bent portions 36a and 36b at both left and right ends. on the other hand,
The chassis 21 has U-shaped grooves 21a and 21b facing the L-shaped bent portions 36a and 36b. Therefore, the L-shaped bent portion 36a of the cassette holder 36,
36b engages with the U-shaped grooves 21a and 21b, and the arrow B
Direction, that is, the direction of the rotary head device 22 in FIG.

If the reel base 37 is driven by a motor direct connection (direct drive) system, the structure for driving the reel base is simplified when the cassette holder 36 is moved in the direction of arrow B. In this case, as is well known, a motor (not shown) is attached to the lower portion of the reel stand 37.

Next, the operation of mounting the cassette on the magnetic reproducing apparatus will be described with reference to FIGS. Note that FIG. 3 shows a right side view of FIG. 1. In the figure, 40
Reference numerals a and 40b denote positioning pins for the cassette 23, 41 denotes a motor, and other reference numerals are the same as or equivalent to those in FIGS.

In FIG. 3A, the cassette 23 descends in the direction of arrow A with its lid 23a open.
At this time, the cassette 23 is accurately positioned by the cassette positioning pins 40a and 40b provided on the cassette holder 36, and as shown in FIG.
It is placed on the reel stand 37. Next, the cassette holder 36 is manually moved in the direction of arrow B. As a result, the front end 23b of the cassette 23, that is, the end on the side where the magnetic tape is exposed, is located near the central axis of the rotary head device 22, as shown in FIG. Will be reached. As means for moving the cassette holder 36, a spring force or an electrically driven plunger or motor may be used in addition to manual operation.

The length L in FIG. 3 (a) represents the size of the conventional device, and the length l in FIG. 3 (c) represents the size of the device according to this embodiment. As is clear from these figures, the device of this embodiment is smaller than the conventional device by the length a.

FIG. 4 is a plan view of the magnetic reproducing apparatus corresponding to FIG. 3 (c). In the figure, 42 is a capstan, 43 is a voice magnetic head, and other reference numerals are the same as or equivalent to those in FIGS.

From FIG. 4 it will be clear that the cassette 23 is carried to a position where its opening encloses part of the rotary head device 22. For this purpose, the length of the chassis 21 of the magnetic recording / reproducing apparatus in the vertical direction is set to the above-mentioned length l.
Can be reduced to.

FIG. 5 is an explanatory view of a component which is moved by receiving a force from the end portion of the cassette holder when the cassette and the cassette holder are moved in the direction of the arrow B as described in FIG. 3 (c). Is. Note that FIG. 5 shows X- in FIG.
An X-ray sectional view is shown.

In the drawing, 44 is an arm urging spring, 3
Reference numeral 6c indicates the tip end portion of the cassette holder 36, 28a indicates the end surface of the exit side guide base 28, and other reference numerals indicate the same or equivalent parts as in FIG.

As shown, the cassette holder 3
6 and the end surface 28a of the exit side guide base 28
Since they are in contact with each other, when the cassette holder 36 is moved in the direction of arrow B as described above, the arm guide spring 44 urges the outlet guide in the direction of arrow d (counterclockwise). The base 28 rotates clockwise around the guide moving arm connecting pin 34. Similarly, although not shown, the entrance side guide base 27 and the pinch roller 3
2 is also rotated clockwise by the forward movement of the cassette holder 36. The arrow c in FIG. 1 indicates the direction of this rotation.

When the cassette 23 and the cassette holder 36 are advanced to the position shown in FIG. 4, these advances are stopped. FIG. 6 is a plan view of the magnetic reproducing apparatus when the loading operation is subsequently started and the loading is completed. In the figure, 45a and 45b indicate holding members (catchers), and other reference numerals indicate the same or equivalent parts as in FIG.

At the start of loading, a driving means (not shown) for loading starts to operate, and the entrance side guide base 27 and the exit side guide base 28 receive power from the driving means and rotate around the rotary head device 22, respectively. Move clockwise and counterclockwise. At this time, the magnetic tape 24 is pulled toward the rotary head device 22 by the inclined guides and the guide rollers on the guide bases 27 and 28. When the guide bases 27 and 28 come into contact with the holding members 45a and 45b, respectively, the magnetic tape 24 is moved to the rotary head device 2 as shown in FIG.
It is spirally wound at a predetermined angle around 2.

When the guide bases 27, 28 are held by the holding members 45a, 45b, the pinch roller 3
2 is at a position where it is pressed against the capstan 42, and the magnetic tape 24 is held between the pinch roller 32 and the capstan 42.

As described above, according to this embodiment, the length of the chassis of the magnetic reproducing apparatus in the front-back (vertical) direction can be shortened, so that the apparatus can be downsized.

[0027]

As described above, according to the present invention, after mounting the cassette on the cassette holder, the cassette holder is moved along the chassis in the direction of the rotary head device and rotated inside the opening of the tape cassette. Since the configuration is such that a part of the head device is stored, the size of the device, which was conventionally fixedly determined by the size of the rotary head device and the cassette, can be significantly downsized with a simple mechanism. It has a great effect.

[Brief description of drawings]

FIG. 1 is a plan view of a magnetic recording / reproducing apparatus when a cassette is mounted according to an embodiment of the present invention.

FIG. 2 is a perspective view of a cassette holder and its periphery.

FIG. 3 is a side view showing a process of mounting a cassette.

FIG. 4 is a plan view of the recording / reproducing apparatus after the cassette is mounted.

5 is a sectional view taken along line XX of FIG.

FIG. 6 is a plan view of the recording / reproducing apparatus after completion of loading.

FIG. 7 is a plan view of a conventional recording / reproducing apparatus.

[Explanation of symbols]

21 ... Chassis, 22 ... Rotating head device, 23 ... Cassette, 24 ... Magnetic tape, 27 ... Entry side guide base, 28
Outgoing guide base, 35 ... Guide moving ring, 36
… Cassette holder.

Claims (2)

[Claims] 1. A main board to which a rotary head device is attached, tape guide means configured to be moved by a loading member to wind a tape around the outer circumference of the rotary head device, and a reel stand for holding a tape cassette. In a tape loading mechanism including an auxiliary substrate configured to be moved to overlap the main substrate, the auxiliary substrate moves to a position where the tape cassette planarly overlaps at least a part of the rotary head device. The tape guide means is configured to have a first section that is moved together with the movement of the auxiliary substrate and a second section that is moved by the loading member. Loading mechanism. 2. The tape guide means is configured to move together with a predetermined distance in the first section while maintaining a constant positional relationship with the auxiliary substrate. The tape loading mechanism described.