JPH0441407B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape winding device, which operates while winding a tape stored in a cassette case.
A cassette-type degaussing device is used to erase signals recorded on the tape.

A winding device for magnetic tape or the like housed in a cassette case has the cassette case attached to its main body, and a motor rotates a reel on which the tape is wound to wind the tape. This type of winding device generally only performs tape winding.

Furthermore, as a device for easily demagnetizing the magnetic head of a recording/reproducing device, a cassette-type demagnetizing device is known, which has a demagnetizing head, a wiring board for a demagnetizing circuit, etc. built into a cassette case. This type of degaussing device is set in the cassette mounting part of a deck and operates the play button to bring the magnetic head on the deck side into contact with the degaussing head inside the cassette case, and the magnetic head is demagnetized by the alternating gradually decreasing magnetic field generated in the degaussing head. It demagnetizes the The present invention
By combining such a cassette-type degaussing device and a tape winding device, a new tape winding device is created that can simultaneously wind up a tape stored in a cassette case and erase signals recorded on the tape. This device was developed for the purpose of providing tapes, and includes a main unit equipped with a rotating shaft rotated by a motor, and a holding unit for a cassette-type degaussing device with a built-in degaussing head, in which tapes are stored. A cassette case and a cassette-type degaussing device can be freely attached to the main body and the mounting section with their respective magnetic head insertion openings facing each other and close to each other. A cassette case and a cassette-type degaussing device are attached to the cassette case, and while the tape stored in the cassette case is being wound up, signals recorded on the tape are erased by an alternating magnetic field generated in the degaussing head. be. Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a tape winding device according to the present invention, in which a box-shaped main body 2 has a pair of rotating shafts 3 rotated by a motor (described later) built in the main body 2 on the top surface. , 3 are rotatably protruded. Reference numeral 4 denotes a standing wall section connected to the rear of the main body section 2, and the standing wall section 4 is provided with a switch button 5. Reference numeral 6 denotes a Philips-type compact cassette case in which a magnetic tape 7 is housed, 8 is a magnetic head insertion port, and 9, 9 are rotating shaft insertion ports. 3, 3 and mounted on the upper surface of the main body part 2. Reference numerals 10 and 10 designate recesses for inserting fingers, which are recessed on both sides of the upper surface of the main body portion 2.

Reference numeral 12 denotes a box-shaped mounting portion for a cassette type demagnetizer 13 connected to the main body portion 2, and a pair of insertion shafts 14, 14 are provided projecting from the upper surface of the box-shaped mounting portion 12. The main body case 15 of the degaussing device 13 has the same size and shape as a Phillips type compact cassette case, and its rotation insertion openings 16, 16 are connected to the insertion shaft 1.
4, 14, the degaussing device 13
is installed in the above-mentioned mounting section 12. 11, 11 are recesses for finger insertion provided on both sides of the upper surface of the mounting portion 12;
24 is the capstan insertion slot 3 of each case 6, 15
This is a positioning protrusion inserted into 7 and 38.

Next, the cassette type degaussing device 13 will be explained with reference to FIGS. 2 to 5.

Reference numeral 17 denotes a demagnetizing head, whose back surface is supported by a wire spring 18 so as to be able to move forward and backward, and is provided in a magnetic head insertion opening 19 provided in the center of the front surface of the case. 20 is a wiring board on which a degaussing circuit is wired;
1 is a power supply battery, 22 and 23 are battery contact plates, 39,
39 is a guide rib for the demagnetizing head 17. 2
Reference numerals 5 and 25 are contacts disposed at one corner of the case 15 and exposed to the outside of the case 15 through openings 27 and 27 provided at the bottom of the case 15.
is placed on the mounting section 12, contacts the contacts 26, 26 disposed at one corner of the upper surface of the mounting section 12,
The degaussing circuit is connected to an electric circuit (described later) on the main body 2 side.

Reference numeral 28 denotes an operator installed on the top of the degaussing head 17, and its upper part slightly protrudes from a long hole 29 vertically opened in the upper surface of the case 15. The demagnetizing head 17 is in the retracted position when demagnetizing the magnetic head H (see the solid line in FIG. 4), but when the operator 28 is moved forward with a fingertip, the front surface of the demagnetizing head 17 is moved slightly away from the insertion opening 19. It protrudes (see the chain line in Figure 4). 291 is a projection for positioning the operator 28 in the forward position. Here, both the cases 6 and 15 are attached to the main body part 2 and the mounting part 12 with the magnetic head insertion ports 8 and 19 formed on the front surfaces thereof facing each other. 19 is close (see Figure 5).
Therefore, when the demagnetizing head 17 is moved forward by operating the operator 28 as described above, the demagnetizing head 17 slightly enters the case 6 through the insertion opening 8 on the front surface of the case 6, and moves along the insertion opening 8. When the degaussing head 17 lightly contacts the magnetic tape 7 being fed, and in that state generates an alternating magnetic field in the degaussing head 17 as will be described in detail later, the signals recorded on the magnetic tape 7 are erased as the tape 7 is fed. 31 is a guide roller for the magnetic tape 7 disposed at one corner of the case 6.

Reference numeral 32 designates a rod-shaped protrusion as a variable contact portion made of an insulating material and protruding from the back surface of the degaussing head 17, and a conductive portion 33 is partially provided in the center of the protrusion 32. 34,34 and 35,35
are contacts arranged in parallel so as to be in contact with the protrusions 32, and normally the conductive part 33 is connected to each contactor 34, 34.
and 35, 35, each contact 34, 3
4 and 35, 35 are open (see the solid line in Figure 4), the degaussing head 1 can be opened by operating the operator 28.
7 is moved forward, the conductive part 33 connects the contacts 35, 3
5, the contacts 35, 35 are closed (the fourth
When the degaussing head 17 is pushed back by the magnetic head H, the conductive portion 33 comes into contact with the contacts 34, 34, and the contacts 34, 34 are closed (see the dotted line in Figure 4). .

FIG. 6 shows an electric circuit, where A is the electric circuit on the winding device 1 side, and B is the electric circuit on the degaussing device 13 side. Reference numerals 40 and 41 are a control circuit and a motor connected to the power supply battery 42 via the switch button 5, and the rotating shaft 3 is connected to the motor 4.
Rotated by 1. 43 is a magnet attached to the lower part of the rotating shaft 3, and 44 is an end sensor. 50 is a DC booster circuit connected to the battery 21, 51 is a switching circuit, 52 is an oscillation circuit, and 53 is a capacitor connected to the wiring board 2.
0, and constitutes a well-known degaussing circuit that generates an alternating gradually decreasing magnetic field in the degaussing head 17. Reference numeral 54 denotes a switch section connected between the battery 21 and the DC booster circuit 50 and consisting of the conductive section 33 and contacts 34, 34. Reference numeral 55 denotes a switch section consisting of the conductive section 33 and the contacts 35, 35, and is connected between the battery 21 and the demagnetizing head 17. This device has the above-mentioned configuration, and its handling operation will be explained next.

First, when demagnetizing the magnetic head H of the recording/reproducing device, the demagnetizing device 13 is attached to the cassette mounting portion of a deck (not shown), and the play button of the deck is operated. Then, the magnetic head H on the deck side is inserted into the insertion slot 1.
9 into the case 15, the degaussing head 17 is pushed back and the contacts 34, 34 come into contact with the conductive part 33, and the switch part 54 is closed. Then, the terminal voltage of the battery 21 is boosted by the DC booster circuit 50 and the capacitor 53 is charged. When the capacitor 53 is charged to a predetermined voltage, the switching circuit 51 is activated and the oscillation circuit 52 oscillates due to the discharge current. , an alternating gradually decreasing magnetic field is generated in the demagnetizing head 17 to demagnetize the magnetic head H.

Next, when winding up the tape 7 in the cassette case 6 and erasing the signals recorded on the tape 7, insert the cases 6 and 15 into the respective slots 8 and 19.
are mounted on the main body part 2 and the mounting part 12 so as to face each other. Next, operate the operator 28 to remove the degaussing head 17.
is moved forward to bring the front surface of the degaussing head 17 into contact with the tape 7 on the case 6 side. In this state, the switch portion 54 is opened, and the conductive portion 33 is connected to the contact 3.
5, 35, the switch part 55 is closed,
The oscillation circuit 52 is directly connected to the power supply side without going through the DC booster circuit 50, the switching circuit 51, or the capacitor 53. Next, when the switch button 5 is operated, the motor 41 is activated, the rotary shaft 3 is rotated, and the tape 7 is wound. At the same time, the oscillation circuit 52 oscillates, generating an alternating magnetic field in the degaussing head 17, and the signal recorded on the tape 7 is transmitted to the tape 7.
It will be erased when the data is sent. The rotational speed of the rotating shaft 3 on the driven side is detected by an end sensor 44, and as the winding of the tape 7 progresses and the rotational speed of the rotating shaft 3 increases, the rotation of the motor 41 is gradually suppressed, and the winding of the tape 7 increases. When the removal is completed, motor 4
1 automatically stops, and the erasure of the signal recorded on the tape 7 is also completed. In this way, according to the present apparatus, the signals recorded on the tape 7 can be erased simultaneously while the tape 7 is being wound. Note that tape 7 is only wound up, and tape 7 is
When erasing is not performed, the degaussing device 13 need not be attached to the mounting section 12.

FIG. 7 shows another embodiment of the present invention, which differs from the above embodiment in that a power storage section 56 consisting of a capacitor is provided in place of the battery 21. If the power storage section 56 is provided in this way, when the demagnetizing device 13 is placed on the mounting section 12, the power storage section 56 will be charged by the battery 42 on the winding device 1 side, so that the magnetic head H can be demagnetized. In this case, the degaussing circuit can be driven by the discharge current of the power storage unit 56 to generate an alternating gradually decreasing magnetic field in the degaussing head 17, which has the advantage that the battery 21 on the degaussing device 13 side can be made unnecessary.

The above embodiment has been explained by taking as an example a cassette case having the same size and shape as a Philips type compact cassette case, but the present invention is applicable to tape rolls housed in cassette cases of other shapes and dimensions, such as microcassettes and video tapes. It can also be applied to a pick-up device.

As explained above, the tape winding device 1 according to the present invention has a rotating shaft 3 rotated by a motor 41.
The cassette case 6 in which the tape 7 is stored and the cassette demagnetizer 13 are placed in their respective positions. Since the magnetic head insertion openings 8 and 19 are arranged close to each other in opposition to each other so that they can be freely attached to the main body part 2 and the mounting part 12,
While winding the tape 7, the signals recorded on the tape 7 can also be erased.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figures are perspective views of the tape winding device, Figures 2 and 3.
Figure 4 is a plan view, partially exploded perspective view, and partial plan view of the cassette type degaussing device, Figure 5 is a partial sectional view of the device in use, Figure 6 is an electric circuit diagram, and Figure 7 is
The figure is an electrical circuit diagram of another embodiment of the present invention. 1... Tape winding device, 2... Main body, 3...
... Rotating shaft, 6 ... Cassette case, 7 ... Tape, 8, 19 ... Magnetic head insertion slot, 12 ... Placing section, 13 ... Cassette type demagnetizer, 17 ... Demagnetizing head, 41 ... Motor .

Claims (1)

[Claims] 1 A cassette case in which a tape 7 is stored, which is provided with a main body part 2 equipped with a rotating shaft 3 rotated by a motor 41, and a mounting part 12 for a cassette-type degaussing device 13 in which a degaussing head 17 is built-in. 6 and a cassette type degaussing device 13 are arranged so that their magnetic head insertion openings 8 and 19 face each other and are close to each other so that they can be mounted freely on the main body section 2 and the mounting section 12.