JPS59142773A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a flexible device which has an operation switching time <=1/4 as long as before and is reduced in size extremely by moving a rotary head device without using any loading device and winding a tape. CONSTITUTION:An operation plate 1 is equipped with the rotary head device 12, an erasing head 44, an auxiliary head 41, and a pinch roller mechanism 35. The rotary head 12 is fixed while its axis of rotation is slanted so that a magnetic head 14 rotates on a circular track slanting at theta1 from an imaginary plane as the reference of a planar tape path. The operation plate 1 is supported at three points of two guide pins 4 and 5 with flanges and a guide pin 7 with a two- stage flange; and the operation plate 1 is movable as shown by an arrow A and advanced to a specific position in the front surface opening part of a tape cassette 34 and held there when used. The planar tape path is set by a couple of tape guides 31 and 32 of two tape guide rotating rollers 46 and 46 so that an imaginary center line running through the headthwise center of a tape 33 is on the imaginary plane crossing the flank of the tape wound around the rotary head device 12 at right angles.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a rotating head type magnetic recording/reproducing device.

Background technology and its problems In conventional rotating head type magnetic recording and reproducing devices,
It was equipped with a loading device that pulled out the tape from the tape cassette and wound it diagonally around a rotating head device.

There are so-called U-loading and M-loading types of loading devices, which eliminate the angle difference or level difference that occurs between the entrance side where the tape begins to be wound around the rotating head device and the exit side where the tape ends. , absorbed by inclined guides or long tape baths. Such a loading device has a complicated structure and is large in size, and has the disadvantage that it takes more than 4 to 5 seconds to switch operations when loading or unloading a tape to a rotary head device, resulting in poor responsiveness. .

Purpose of the Invention In view of the above-mentioned points, the present invention is configured so that a tape is wound around a rotary head device without using a loading device, and the operation switching time can be shortened to less than 1 compared to the conventional one, and furthermore, it is possible to achieve ultra-miniaturization. The purpose of the present invention is to provide a magnetic recording and reproducing device that is highly versatile.

Summary of the Invention The present invention provides a magnetic recording and reproducing apparatus that performs helical scanning recording and reproducing using a rotary head device in which a magnetic head scans a tape running on a flat tape bus in a diagonal manner. In this method, a rotary head device, an erasing head, an auxiliary head (CTL head, etc.), a pinch roller mechanism, etc. are mounted on the operating panel of a magnetic recording/reproducing device, and the operating panel is moved to operate the above-mentioned rotating head device, etc. By inserting the tape into the front opening of the tape cassette, the tape is loaded into the rotating head device, etc. in conjunction with the tape guide, capstan, etc. that have been inserted into the front opening of the tape cassette. It is characterized by what it did.

Embodiment Hereinafter, an embodiment of the magnetic recording/reproducing apparatus of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic plan view showing an embodiment of a digital audio recorder, and (1) is an operation panel.

Guide grooves +21 are provided on both sides of this operation panel (1).
(3) are bored, and each guide groove (21 (3)) is guided in the plane direction by each flanged guide pin (4) (5) installed upright on a mechanical chassis of a magnetic recording/reproducing device, etc. Attach it so that it can slide.

Furthermore, an L-shaped protrusion guide (6) is provided on the upper right side of the operation panel (1) in the figure, and a guide pin with a two-stage flange (the lower flange of the force The protrusion guide (6) is placed on it and guided.In other words, the entire operation plate (1) is made up of two flanged guide pins (4) (5) and a two-stage seven-flange guide bin (7). It is guided and supported so that it can move in the direction of the arrow between the used position and the unused position at the point.

In addition, there is a U-shaped notch (
8), and the guide roller support rod (9) is driven by a drive device linked to an operation section (not shown) to move the operation plate (1) forward or backward for use. It is set to the state position or the unused state position.

The illustrated operation plate (1) is in a state where it has been advanced to a predetermined position, and in this state, the part that intersects at right angles with the L-shaped protrusion guide (6) is connected to the shaft of the two-stage flange-equipped guide pin (7). The protruding guide (6) rests on the lower flange of the guide bin (7) with 2-stage 7 flange, and positions the operating plate (1) in the horizontal direction by coming into contact with it in a pinching manner. . In addition to this, a guide pin with a two-stage flange on the left side of the figure (a trapezoidal plate-shaped protrusion guide Ql is placed on the lower flange of 101) and abuts against the shaft for vertical and horizontal positioning. . In this way, when the operation plate is in the predetermined forward position, the left and right pair of two-stage 7-lunged guide bins (7) Q (I and each protrusion guide (
6) Each flanged guide pin (
4) It is supported by (5) and stopped at a predetermined position in the loading state.

A rotary head device (12+) is screwed and fixed to a predetermined position with a part of the rotating head device (12+) protruding forward on the wide part on the right side of the center of the operation plate (1) using a mounting screw α31 (131). As shown in the vertical cross-sectional view of FIG. 2, the rotation axis is set so that the magnetic head (141) rotates on a circular orbit inclined by 01 (5 degrees in this example) from the virtual plane that is the reference of the planar tape path. It is composed by tilting it.

In this figure 2, 051 is the rotation axis, (161 is this rotation axis 0
9, and rotates at 60 Hz in this example. The rotary drum ae is equipped with an electro-mechanical conversion element such as a bimorph element aη having a magnetic head α4 attached to its tip. This bimorph element aη is used to perform control operations related to tracking when the rotary drum 0.61 rotates on a predetermined inclined circular orbit and performs recording and reproducing in a helical scan method.

Further, the upper fixed drum 08 and the lower fixed drum a9 are fixed together with a plurality of screws (211) using a connector bar so as to sandwich this rotating drum (I6). The tape guide surface (c) of the mallet (2) has an elliptical shape (in this example, the major axis is 20th scale, the shortest shape is 19
．． It is shaped like an oval (924 m long). Therefore, the amount of protrusion of the magnetic head I from the tape guide surface ρ does not change.

Furthermore, a planar lead surface (c) corresponding to a planar tape bus is provided on the lower fixed drum (a). In Figure 2, (F) is the rotating yoke, C51 is the fixed yoke, (C) is the coil, and C! η is the bearing, (c) is the rotating transformer,
The wire is a pulse generator, and the example is a slip ring.

As shown in FIG. 1, the tape Q is wound around the above-described rotary head device by a pair of tape guides t3n cta.

That is, a pair of tape guides C11) (32) are installed upright on the tape cassette (Incorporated), and the tape stretched over the front opening of the tape cassette is slid into contact with the outer side of the tape guides C11) (32). When the plate (1) is advanced to the operating position, the rotating head device (121) advances between the pair of tape guides R31J62, and the tape (c) stretched between the pair of tape guides 09 It is wound around the rotating head device Q2 at a predetermined winding angle θ2 (in this example, θ2=60°).

There is also a pinch roller mechanism (t) on the left side of the operation panel (1).
is fixed with a shaft pin (to), and a linear spring CI? + is attached to give a biasing force in the direction of arrow B. Note that the pinch roller stopper (to) prevents the pinch roller mechanism C351 from rotating more than necessary due to the force of the linear spring (3).

Capstan C corresponding to this pinch loop 2 mechanism (c)
391 is rotated by a rotary drive device equipped with a frequency generator (FG) servo mechanism (not shown),
When setting the tape cassette 04) in the magnetic recording/reproducing device, the tape (c) stretched over the front opening of the tape cassette
It goes inside the inside of the . Then, as the operation plate (1) moves forward to the operating position, the pinch roller 4
Linear spring 07 is attached to the capstan OI so as to sandwich the tape strip.
) with a biasing force.

Pinch roller mechanism (to) attached to this operation panel (1)
An auxiliary head (in this example, C
TL head) (4υ with two fine adjustment screws (43(
Adjust the mounting position with step 43 and fix it. In addition, this auxiliary head θυ is in contact with the tape (c) stretched between the capstan C31 and the tape guide country in the operating position.

In addition, on the right end of the operation plate (1), attach an erasing head (4 screws (451). This erasing head (44) is attached to the tape guide R3] in the operating position and to the tape guide rotating roller of the tape cassette). Tape stretched between (3
It is in contact with the floor.

The tape cassette 04) used in the magnetic recording and reproducing apparatus of this embodiment as described above has a cutout opening of a desired shape in its front opening, so that the capstan 01 can be placed inside the tape. , and then press the operation panel (1
) The rotary head device (12+ or erasing head 04) and auxiliary head (41) or pinch roller mechanism (g) mounted on the tape cassette can be advanced to a predetermined position in the front opening of the tape cassette so that they can be inserted and deployed. It is.

In addition, when this tape cassette (goods) is set in a magnetic recording/reproducing device, the three guide holes of this tape cassette (b) are placed on the left and right two-stage 7-lunged guide pins (7).
By engaging the upper 7 flange of aυ and its shaft, and further engaging the 7 flange of the third flanged guide pin (not shown) and its shaft, a predetermined plane can be supported at three points. Retained.

Furthermore, the supply reel shaft (A) of this tape cassette C34)
7) rotation axis and take-up reel axis (4 seconds rotation axis is set parallel, and together with this, two tape guide rotation rollers (4G (461, pair of tape guides C3) that constitute a tape bus) C32 and the rotating shafts of the capstan 0 and the pinch roller n+) are connected to the respective reel shafts (47) (4S
parallel to the axis of rotation. Furthermore, the sliding surfaces of the erasing head (441), the auxiliary head (4υ, and the tape in the rotary head device (121) are the respective reel shafts (47) (4
8) Form a curved surface concentric with an axis parallel to the
In this embodiment, a planar tape bus is generally set such that a virtual center line passing through the center of the width of the tape is placed on a virtual plane perpendicular to the side surface of the tape wound on the rotating head device (121). This is how it is, that is,
Pass the center of the width of the tape wound around the rotating head device.
Inlet side of the rotating head device (the side where the tape starts to wrap)
The exit side of the rotating head device (
The side where the tape ends (the side where the tape ends) is placed on the same plane as the surface perpendicular to the plane formed by the tape that has finished winding.

Then, the idler lever 6υ equipped with the drive gear (40) fixed to the motor shaft and the idler gear (5) meshed therewith is swung in the direction of arrow C, and the supply reel no.
Alternatively, it meshes with the take-up reel hub gear (c) to transmit rotational force and run the tape (c).

Note that 154) is a return spring fixed to the mechanical chassis or the like, which works to return the idler lever 61) to the neutral position.

In the magnetic recording/reproducing apparatus of this embodiment, various head devices, pinch roller mechanisms, etc. are integrally mounted on the operation plate (1), and the operation plate (1) is advanced to the operating position to play the tape. Immediately take a prescribed flat tape bus and transfer it to the rotary head device α2, and when not in use, move the operation plate (1) back so that various head devices, pinch roller mechanisms, etc. are integrated. tape guide) (34
It is configured so that it can be quickly detached from the front opening of No. 1 and enter the unloading state. When the magnetic recording and reproducing device is used for recording and reproducing, the magnetic head rotates on a predetermined inclined circular orbit with respect to the running tape 031 loaded onto the rotary head device (1, 21 by a planar tape bus). (14) is scanned diagonally relative to the tape, and furthermore, electricity is applied to the bimorph element side,
It performs recording and reproduction using a helical scan method while controlling signal tracking.

Effects of the Invention As detailed above, according to the magnetic recording/reproducing apparatus of the present invention, the operation plate equipped with the rotary head device, erasing head, auxiliary head, pinch roller, etc. can be simply moved toward the front opening of the tape cassette. The tape can be loaded onto a rotary head device, etc. using a predetermined flat tape bus, and the amplifier can be loaded by simply pulling the operation panel away from the tape cassette.
Because the tape is loaded or unloaded, the operation time for tape loading or unloading can be reduced to less than 1 second, which is less than the conventional operation time.
・It has 5 effects. Moreover, since no separate loading device is required, the entire magnetic recording/reproducing apparatus can be made compact and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an embodiment of the magnetic recording/reproducing apparatus of the present invention, and FIG. 2 is a longitudinal sectional front view of the rotary head device portion thereof. In the figure, (1) is the operation panel, ([2+ is the rotating head device, e
i+ Cl21 is the tape guide, (C) is the pinch roller mechanism, 081 is the capstan, (41) is the auxiliary head,
(44) is an erasing head.

Claims (1)

[Claims] In a magnetic recording and reproducing apparatus that performs recording and reproducing in a helical scan method using a rotary head device in which a magnetic head scans a tape in a diagonal manner relative to a tape traveling on a planar tape bus, the magnetic recording The rotating head device, erasing head, auxiliary head, pinch roller mechanism, etc. are mounted on the operating panel of the playback device, and the operating panel is moved to place the rotating head device, etc. in the front opening of the tape cassette. By the insertion operation, the tape is inserted into the front opening of the tape cassette in conjunction with a tape guide, capstan, etc. whose axis is parallel to the rotation axis of the rotary head device, and the tape is inserted into the rotary head device. A magnetic recording/reproducing apparatus characterized in that the magnetic recording/reproducing apparatus is configured to be loaded into a tape cassette, or to be unloaded by moving the operating panel to remove the rotary head device from the tape cassette.