JPS6020197Y2 - Magnetic recording/reproducing device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a magnetic recording/reproducing device that linearly performs magnetic recording/reproduction by sliding a magnetic head in contact with and moving a rotating disc-shaped magnetic recording medium.

Conventionally, magnetic recording/reproducing apparatuses using disc-shaped cards have had the disadvantage that tracking errors occur unless the starting point of the helical line is located.

Therefore, in the conventional model, a D-shaped cut is made on the rotating shaft.
Drill a D-shaped hole in the card that matches the D-shaped cut, place the card on the turntable from above the device,
The starting point for recording/playback on the card was determined by visually aligning the D-shaped cut and the D-shaped hole.

However, in such a conventional position, the card must be inserted from above, so it is necessary to leave a space for card insertion in the upper part corresponding to the card surface. Since the D-shaped cut of the card is aligned with the D-shaped hole of the card, the alignment operation is complicated.

The purpose of the present invention is to eliminate the various drawbacks of the conventional devices described above, and to provide a magnetic recording/reproducing device that is small, easy to position with respect to the rotation axis of a magnetic recording medium, and has a simple configuration. .

The configuration of the present invention is to fit a disk-shaped magnetic recording medium onto a rotating shaft rotated by a rotational drive source, and to slide a magnetic head onto and move the magnetic recording medium while rotating the magnetic recording medium. In a magnetic recording/reproducing device that performs magnetic recording in a magnetic recording medium in a linear manner or reproduces magnetic recording in a magnetic recording medium in a magnetic recording medium, a locking portion that uniformly regulates the relative position between a rotating shaft and a magnetic recording medium. the center hole of the magnetic recording medium is fitted into the locking part so that the magnetic recording medium rotates integrally with the rotation shaft; A turntable is attached to the shaft so that it can slide in the axial direction and rotate integrally with the rotating shaft, and a presser member is provided so that it can freely approach and separate from the magnetic recording medium mounting surface of the turntable. Delaying the movement of the member toward the magnetic recording medium mounting surface, the turntable is set and moved in the axial direction along the rotating shaft to the magnetic recording/reproducing position, and At the insertion position of the magnetic recording medium, a control member is engaged with the turntable for returning the turntable to the insertion position so that the tip of the rotating shaft does not protrude from the turntable toward the insertion space for the magnetic recording medium. The pressing member cooperates with the rotating shaft in the process of setting and moving the turntable to clamp the center hole portion of the magnetic recording medium, and as the rotating shaft rotates, the holding member holds the center hole in the engagement position. The magnetic recording medium is configured to fit into a stop portion, and regulates the mounting position of the magnetic recording medium with respect to the turntable so that the center hole faces the rotation axis when the turntable is at the insertion position of the magnetic recording medium. This is a magnetic recording/reproducing device characterized by being provided with a positioning stop.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

1 is a rotating shaft with a D-shaped cut 1a made at its tip.

2 is an E-ring fitted into the rotating shaft.

A turntable 8 is attached to the D-shaped cut 1a as a locking part.
A bottom plate 3 integral with the rotating shaft 1 is fitted onto the rotating shaft 1 so as to be able to thrust in the axial direction thereof and to rotate integrally with the rotating shaft 1.

A circular groove 8a is formed in the center of the turntable 8, and a circular groove 8b is formed below the circular groove 8a.A disc-shaped collar 9 is fitted into the groove 8a, and 8b
A leaf spring 10 is placed on the holder to urge the collar 9 upward.

There is an L-shaped leg 9a at the bottom of the collar 9, which engages with the convex portion 8c of the turntable, so that the surface of the collar 9 is flush with the surface of the turntable 8.

The collar 9 is provided with a hole 9b that matches the D-shaped cut 1a, and is capable of being thrust with respect to the shaft.

A flexible disc-shaped card (magnetic recording medium) 6 is held at its center by a protector 7.

Reference numeral 12 indicates a positioning force when inserting the card 6 from the lateral direction.

A card holder 5 is attached to the lever 4.

6' is a washer. The card presser 5 can be thrust freely by the amount of the step 5a.

5b is an escape hole of the D-shaped cut 1a.

The lever 4 and the lever 11 rotate around a shaft 4a, and the lever 4 and the lever 11 are connected by a pin 4b provided in the lever 4 and an elongated hole 11a provided in the lever 11.

In addition, a magnetic head (not shown) is configured to face the turntable 8, and the turntable 8 is moved in synchronization with the rotating shaft 1.
Move radially above.

FIG. 3 shows details of the flexible disc-shaped card and the protector 7.

In the center of the card 6, there is a D-shaped hole 6a that matches the D-shaped cut 1a, and two pin holes 6b, 6 are provided outside of the D-shaped hole 6a.
b is open.

The protective body 7 consists of upper and lower collars 7a and 7b, and the collar 7a
A D-shaped hole 7c is provided in the center, and pin holes 7d, 7d are provided outside of the D-shaped hole 7c.

The collar 7b has a D-shaped hole 7 in the center and a pin 7e on the outside.
7e is provided.

These two colors 7a. 7e from both sides of the card 6, and the pin 7e enters the pin hole 6b1 pin hole 7d, so the collars 7a and 7b are joined by welding the tip of the pin 7e.

The collars 7a and 7b may be connected by screws instead of pins, or by adhesive.

The cross-shaped cut and D-shaped hole are not limited to these, but may be a protrusion or the like, as long as they have an asymmetrical shape.

Further, only one of the collars 7a and 7b may be used.

Note that the D-shaped hole 6a of the card 6 does not have to be a D-shaped hole,
It is sufficient if the hole is larger than the D-shaped cut 1a.

The action will be explained below.

FIG. 1 shows a state in which the turntable 8 is in the magnetic recording medium insertion position. In FIG. 1, the disc-shaped card 6 is placed on the turntable 8 from the direction A.

At this time, the mounting position of the card 6 on the turntable 8 is set by the degree 12, and the D-shaped hole of the protector 7 faces the rotating shaft 1.

Here, when the lever 4 is pushed down, the card presser 5 descends and comes into contact with the protector 7.

As the lever 4 rotates, the pin 4b is inserted into the elongated hole 11a.
When the pin 4b comes into contact with the lower edge of the elongated hole 11a, the lever 11 serving as a control member begins to descend.

As this lever 11 descends, the turntable 8
is lowered toward the magnetic recording/reproducing position, but if the lever 4 is further lowered, the lever 4 will press the presser member 5, so after the lever 4 presses the presser member 5, the lever 4 is lowered. Even if a force is applied, the lever 4 will not descend unless the D-shaped hole 7C of the protector 7 fits into the D-shaped cut 1a.

In this state, the protector 7 is held between the pressing member 5 and the rotating shaft 1.

Here, when the rotating shaft 1 is rotated, the D-shaped cut 1a is fitted into the D-shaped hole 7c of the protector 7, and after this fitting, the lever 4 is lowered, and as the lever 4 is lowered, the lever 4 is lowered. 1
1 further descends, and the turntable 8 comes into contact with the E-ring 2.

Here, if this lever 4 is further lowered, the collar 9
is sunk into the recess 1i8a, and the card 6 is brought into close contact with the upper surface of the turntable 8, completing the setting of the card 6.

At this time, the lever 11 is separated from the bottom plate 3.

With the above steps, loading of the card 6 onto the turntable 8 is completed.

The rotating shaft 1 may be rotated by detecting that the card holder 5 presses the card 6, or may be rotated by a separate manual switch after the card 6 is pressed.

The reason why the card presser 5 has play in the sliding direction is to stabilize the pressing force against the card by providing play at this time since the card presser 5 contacts the card obliquely.

The lever 4 may be biased clockwise at all times, but if a click spring is used and the lever 4 is in the state shown in Figure 1, it will be biased clockwise, and if the lever 4 is pushed down from the state shown in Figure 1, it will be biased counterclockwise. It may be configured such that it is biased in the direction.

At this time, the spring force of the click spring needs to be stronger than the spring force of the leaf spring 10.

Next time you take out the card 6, lift the lever 4, the card presser 5 will be released from the card 6, and the pin 4b will be inserted into the elongated hole 1.
When the turntable 8 hits the upper edge of the turntable 1a, the lever 11 raises the turntable 8 and returns to the state shown in FIG.

At this time, due to the restoring force of the spring 10, the collar 9 has returned to the state shown in FIG.
The card can be removed smoothly.

The reason why the levers 4 and 11 are not moved at the same time is that when raising the turntable, it is desired to first release the card presser 5 from the card surface and then raise the turntable.

In the present invention, the turntable is formed to be able to slide in the axial direction of the rotating shaft and rotate integrally with the rotating shaft, and when the turntable is at the insertion position of the magnetic recording medium, the tip of the rotating shaft is Since it is formed so that it does not protrude from the turntable toward the insertion space for the magnetic recording medium,
Even if the magnetic recording medium is inserted into the magnetic recording/reproducing device from the side, the magnetic recording medium can be easily inserted without being disturbed by the rotating shaft, and a stop for positioning the magnetic recording medium is provided. By this, the relative position of the magnetic recording medium with respect to the turntable is determined so that the center hole of the magnetic recording medium faces the rotating shaft, and in the process of setting and moving the turntable, the center hole of the magnetic recording medium is fixed by the rotating shaft and the holding member. Since the magnetic recording medium can be positioned by sandwiching the parts and then fitting the rotating shaft, it is easy to position the magnetic recording medium even when the magnetic recording medium is inserted from the side. This produces the effect that positioning can be performed.

[Brief explanation of drawings]

Fig. 1 is a central sectional view of the device, Fig. 2 is a sectional view of the main parts of the device, Fig. 3 is an exploded sectional view of a magnetic card (magnetic recording medium),
FIG. 4 is a plan view of the magnetic card. 1...Rotation shaft, 2...E IJ song 3...Bottom plate, 4...Lever 5...
...Card holder, 7...Protective body, 8...
...Turntable, 9...Disc-shaped collar, 1
0...Plate spring, 11...Lever 12
...Performance for positioning.

Claims (1)

[Scope of utility model registration request] A disc-shaped magnetic recording medium is fitted onto a rotary shaft rotated by a rotational drive source, and a magnetic head is slid onto and moved to the magnetic recording medium while rotating the magnetic recording medium, so that the magnetic head is moved from the magnetic recording medium. In a magnetic recording/reproducing device that performs linear magnetic recording or reproducing linear magnetic recording, a locking portion is formed on the rotating shaft to uniformly regulate the relative position between the rotating shaft and the magnetic recording medium. The center hole of the magnetic recording medium is shaped so that the center hole of the magnetic recording medium is fitted into the locking part so that the magnetic recording medium rotates integrally with the rotation shaft, and the rotation shaft has an axial direction. A turntable is mounted so as to be slidable on and rotatable integrally with the rotating shaft, and a presser member is provided so as to be able to freely approach and separate from the magnetic recording medium mounting surface of the turntable, and the presser member is mounted on the magnetic recording medium mounting surface. Set and move the turntable in the axial direction along the rotating shaft to a magnetic recording/reproducing position delayed by the movement in the direction approaching the placing surface, and at the insertion position of the magnetic recording medium. A control member is engaged with the turntable for returning the turntable to the insertion position so that the tip of the rotating shaft does not protrude from the turntable toward the insertion space for the magnetic recording medium, and the pressing member is A configuration in which the center hole portion of the magnetic recording medium is held in cooperation with the rotating shaft during the set movement process of the turntable, and the center hole is fitted into the locking portion as the rotating shaft rotates. and a positioning stop is provided for regulating the placement position of the magnetic recording medium with respect to the turntable so that the center hole faces the center hole when the turntable is at the insertion position of the magnetic recording medium. A magnetic recording/reproducing device characterized by: