JPH0351819Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a flexible magnetic disk device that can perform recording/reproduction by bringing magnetic heads into contact with both surfaces of a flexible magnetic disk.

Prior Art Conventionally, in a flexible magnetic disk device, when a flexible magnetic disk is inserted into a predetermined insertion position and the clamping means is operated to clamp the disk, one of a pair of heads that abuts both sides of the disk The head holder holding the head is once displaced in the disk abutting direction until it comes into contact with the rotating member that is locked on the locking member driven by the solenoid, and as the solenoid is energized, the locking member moves away from the rotating member. The rotary member is separated and rotated, and the head holder is further moved to a head contact position where the head is brought into contact with the disk surface, and the head is brought into contact with both sides of the disk to perform recording/reproduction. . However, in conventional flexible magnetic disk devices, if the disk is accidentally clamped before insertion, the pair of heads will come into contact with each other, causing suction between the mirror-finished head surfaces. In order to prevent accidents that could occur if the pair of heads do not separate from each other due to this condition, a solenoid is provided to drive the locking member. This requires extra installation space for the solenoid within the device, which increases manufacturing costs. The disadvantage was that it was expensive.

Means for Solving the Problems The present invention aims to provide a flexible magnetic disk device that eliminates the above-mentioned drawbacks.
The head holding body holds the magnetic head in contact with the disk surface of the flexible magnetic disk so as to be able to move away from the magnetic head, and the clamper is provided. a rotating arm that rotates to clamp the magnetic head and rotates in the direction of unclamping when the operating member is ejected; A rotating member rotates to follow the movement of the arm, and is biased in a predetermined direction by a spring member, regulating the rotation of the rotating member and accompanying the insertion operation of the flexible magnetic disk. and a displacement member that rotates while resisting the spring member, and as the flexible magnetic disk is inserted, the displacement member engages the spring member so as to release the rotation restriction of the rotation member. Only when the flexible magnetic disk is rotated while resisting and the flexible magnetic disk is positioned at a predetermined position, and the flexible magnetic disk is clamped in this state, the head holder is rotated through the rotation of the rotating member. The magnetic head can be brought into contact with the disk surface, and when an eject operation is performed, the flexible magnetic disk is pushed out by the displacement member using the elastic force of the spring member.

Embodiment FIG. 1 is a plan view of an embodiment of a flexible magnetic disk device according to the present invention. 10 is an exploded perspective view showing the same flexible magnetic disk device. The flexible magnetic disk device shown in FIGS. 1 and 10 has a magnetic disk 1 as shown in FIG.
, an opening 3 for storing the magnetic disk 1 and clamping the periphery of the center hole 2 of the magnetic disk 1, and an oval opening for attaching a magnetic head (not shown) to the magnetic disk 1 during recording/reproduction. As shown in FIG. 3, when a flexible magnetic disk 6 consisting of a storage case 5 having a storage case 5 and the like is inserted into the insertion opening 7a of the recording/reproducing device 7, the edge 5 of the storage case 5
a is a stopper in the recording/reproducing device 7 (not shown)
When the magnetic disk 1 comes into contact with the magnetic disk 1 and reaches the mounting position, the clamp operating lever 8 as an operating member is rotated clockwise and the magnetic disk 1 is clamped. In Figure 1, 10 is a rotating arm (locking member)
A clamper 11 for clamping the magnetic disk 1 is attached to the tip 10a, and an engagement pin 1 is attached to the lower surface of the tip of the arm 10b extending in the direction of arrow _X1 .
0c is made to protrude in the hanging direction. Reference numeral 12 denotes a support plate (indicated by a two-dot chain line), which is horizontally suspended above the rotating arm 10, and has a fixed part 12 bent in the hanging direction.
a and 12b are screwed to the lower chassis 13. Further, the support plate 12 has the shaft 14 inserted through holes 12c- ₁ and 12d- ₁ of the downwardly projecting pieces 12c and 12d. The shaft 14 has holes 10d in protruding pieces 10d and 10e that protrude downward from the rotating arm 10 inside the protruding pieces 12c and 12d.
- ₁ and 10e- ₁ and extend outward from the protruding pieces 12c and 12d of the support plate 12.
a, 14b to restrict axial movement and protrude pieces 12
Retaining ring 1 to prevent it from slipping out from c, 12d
5 is inserted.

Reference numeral 16 denotes a torsion spring, which is wound around the shaft 14 inside the protruding piece 10d.
6a is inserted into the hole 12e of the support plate 12, and the other end 16b abuts against the lower surface of the rotating arm 10, pressing the rotating arm 10 upward. The rotating arm 10 before the clamp operation is rotated upward by the elastic force of the torsion spring 16 using the shaft 14 as a rotation axis so as not to prevent the clamper 11 from being inserted into the mounting position of the flexible magnetic disk 6. It is avoided upwards.

As shown in FIG.
It is fixed to one end of a rotating shaft 17 inserted through the holes 12f- ₁ and 12g- ₁ of g. The cam 18 is fixed to the other end of the rotating shaft 17, and rotates integrally with the rotating shaft 17 when the clamp operation lever 8 is rotated. Further, the cam 18 is in contact with the upper surface 10f of the rotating arm 10 so as to limit the upward rotation of the rotating arm 10. Note that the cam 18 faces the opening 12h of the support plate 12, and is allowed to rotate by a clamp operation. In addition, rotating arm 1
0 is an opening 1 facing the protruding piece 12f of the support plate 12
0g is provided, and the protruding piece 12f is connected to the opening 10.
g and is allowed to rotate upward.

Reference numeral 19 denotes a displacement member which is a main part of the device of the present invention, and includes an arm portion 19b having a contact piece 19a in the hanging direction at the tip that contacts the edge 5a of the storage case 5, and an engagement pin 10c of the rotating arm 10. Engaging protrusion 19c
It has an arm portion 19b whose tip projects upwardly, and is rotatably supported by a shaft 13b protruding from the chassis 13 at the back of the mounting position of the flexible magnetic disk 6. In addition, the displacement member 19 has an arm portion 19
A locking portion 19e extending substantially parallel to b, and an arm portion 19
a groove 19f formed between the locking portion 19e and the locking portion 19e;
It has The protrusion 19c is the engagement pin 10c
The hole 19c- ₁ has a sufficiently larger size.

20 is a torsion coil spring, and the displacement member 19
It is wound around the shaft 13b below the shaft 13b, and one end 20a
is brought into contact with the contact piece 19a of the displacement member 19, and the other end 2
0b is inserted into the hole 13c of the chassis 13 and is locked therein. Since the displacement member 19 is urged clockwise and upward by the elastic force of the spring 20, the protruding portion 19c is pushed toward the lower surface side of the fixed portion 12a of the support plate 12 until it comes into contact with the vertical portion 13d of the chassis 13. Insert the contact piece 19a and rotate it clockwise.
flexible magnetic disk 6 by displacing it in _{the two} directions of arrow
into the installation position.

22 is a pair of opposing magnetic heads (not shown)
This head holder holds the upper head on the lower surface side, and has a protruding piece 22a, and holds the magnetic head in contact with the disk surface of the magnetic disk 1 so as to be able to move away from it. Note that the lower head is fixed. Before the disk 6 is inserted into the device 7, the protruding piece 22a is in contact with the upper surface of the rotating member 23, which will be described later, and the head holder 22 is moved and locked to an upper position where the head is separated from the disk surface. Ru.

The head holder 22 is bent upward like a leaf spring against a spring (not shown) at the lower end of an upper arm 22b screwed to the base side of the head holder 22, and the locking piece As the head descends for 10 hours, it is pressed by the elastic force of the spring and returns directly, bringing the head into contact with the disk surface.

23 is a rotating member, and the locking piece 1 of the rotating arm 10
The protruding piece 23a that comes into contact with the upper surface of 0h and the contact piece 2 that comes into contact with the lower surface of the locking part 19e of the displacement member 19
3b, and is rotatably provided below the protruding piece 22a of the head holder 22. Further, the rotating member 23 moves the right protruding piece 23c to the supporting plate 12.
It is supported by a pin 24 passed through a hanging piece 12i bent in a more hanging direction, and a pin 25 passed through a vertical piece 13e extending vertically from the chassis 13 through the left protruding piece 23d. Moreover, the rotating member 23 is moved downward by the torsion spring 26 wound around the pin 25, and the abutting piece 23b is moved downwardly.
is biased in the direction of upward rotational displacement. Since the displacement member 19 is rotating clockwise before the disk 6 is inserted, the rotation member 23 is
b is brought into contact with the locking portion 19e of the displacement member 19 from below, and rotational displacement is regulated.

Therefore, if the clamp operation lever 8 is erroneously rotated to perform a clamp operation before inserting the disk 6, the rotation arm 10 will rotate downward about the shaft 14 due to the rotation of the cam 18. However, since the rotating member 23 is restricted by the displacement member 19 and cannot rotate, the protruding piece 23a does not follow even when the locking piece 10h descends in the clamping direction, and the head holder 23 does not move the protruding piece 22a. The rotary member 23 cannot be lowered while it is in contact with the upper surface. Therefore, even if the lever 8 is erroneously operated without the disk 6 being inserted, the displacement member 19 restricts the displacement of the head holder 22 in the direction of contacting the disk surface via the rotating member 23. This prevents an accident in which a pair of opposing heads contact each other with their head surfaces and become unable to separate.

As shown in FIG. 5, when the flexible magnetic disk 6 is inserted into the device 7 through the insertion port 7a, the edge 5a of the storage case 5 comes into contact with the contact piece 19a of the displacement member 19 during insertion. Therefore, as shown in FIG. 6 _, when the disk 6 is inserted in the direction of arrow Chassis 1
It comes into contact with the stopper 21 that protrudes from 3, stops at the mounting position, and is regulated. The displacement member 19 separates the locking portion 19e from the contact piece 23b of the rotation member 23 as it rotates counterclockwise. Therefore, when the abutment piece 23b faces the groove 19f, the rotation member 23 is released from the restriction by the displacement member 19, and becomes in a rotatable state in which the protruding piece 23 can follow the locking piece 10h. .

Further, the spring 20 is charged with a resilient force that causes the displacement member 19 to rotate clockwise.

The displacement member 19 is located on the upper surface 19c- ₂ of the protrusion 19c.
is rotated counterclockwise while being brought into sliding contact with the lower surface side of the fixed part 12a of the support plate 12, and after the protruding part 19c comes out of the fixed part 12a, the contact piece 19a is brought into contact with the stopper 21. The hole 19c- ₁ of the protruding portion 19c that has come out from the fixed portion 12a is connected to the rotating arm 10.
The engagement pin 10c is rotated to a position opposite to the engagement pin 10c.

As shown in FIG. 7, the displacement member 19 is no longer restricted in the vertical direction, and is moved upward by the pressing force of the spring 20 in the direction of arrow _Y2 , causing the engagement pin 10c to be relatively inserted into the hole 19c- _1. . Therefore, the upward movement of the displacement member 19 is restricted by contact with the engagement pin 10c, and the edge 12a-
The side portion of the protruding portion _19c is brought into contact with the protruding portion 19c, and rotation in the clockwise direction is restricted and stopped.

Next, as shown in FIGS. 3 and 8, after inserting the disk 6, the clamp operation lever 8 is moved to the stepped portion 7.
Rotate approximately 90° clockwise until it touches b.
The cam 18 rotates clockwise together with the rotation shaft 17. The rotating arm 10 is pressed in the direction of arrow _Y1 by the rotation of the cam 18, rotates about the shaft 14 against the elastic force of the spring 16, and the clamper 11
descend in the direction of arrow _Y1 .

As the rotation arm 10 rotates, the engagement pin 10c moves the displacement member 19 against the elastic force of the spring 20 as shown in the arrow.
Y: Descend in ₁ direction. For this reason, the displacement member 19
As shown by the broken line in FIG. 7, the protruding portion 19c descends to a lower height position than the fixed portion 12a of the support plate 12. In addition, as shown in FIG. 9, the displacement member 19
In this case, the engagement pin 10c is inserted into the hole 19c- of the protrusion 19c.
₁ , the upper surface 19 of the protrusion 19
When c- ₂ reaches a position lower than the lower surface side of the fixed part 12a, the engagement pin 10c rotates by a slight angle clockwise under the action of the elastic force of the spring 20 until the engagement pin 10c comes into contact with the inner wall of the hole 19c- ₁ , and the upper surface Part of 19c- ₂ is fixed part 1
Insert it under 2a. Further, the flexible magnetic disk 6 is returned by a certain distance in the direction of the arrow _X2 by the clockwise rotation of the displacement member 19, and reaches the clamped position. Although the displacement member 19 returns slightly clockwise when the disk 6 reaches the clamp position, the locking portion 19e is spaced apart from the abutment piece 23b and does not impede the rotation of the rotation member 23.

Further, the flexible magnetic disk 6 is connected to a rotating arm 10.
The center hole 2 of the magnetic disk 1 descends with the rotation of the magnetic disk 1.
The clamper 11 and the turntable (not shown) are reliably clamped at a position where the centers of the clamper 11 and the turntable (not shown) are aligned with each other. As the locking piece 10h lowers, the rotating member 23 of the head holder 22 is biased by the spring 26 and rotates in the direction of lowering the protruding piece 23a. For this reason,
The protruding piece 22a follows the rotation of the rotating member 23 and descends to bring the head into contact with the disk surface, and the pair of opposing heads sandwich the magnetic disk 1 to perform recording/recording.
becomes playable.

Next, when ejecting the flexible magnetic disk 6, the clamp operation lever 8 is moved in the opposite direction to the clamp operation.
By rotating 90° counterclockwise, the cam 18 rotates and releases the pressure on the rotating arm 10. Therefore, the rotating arm 10 is rotated by the elastic force of the torsion spring 16 so as to move the clamper 11 upward in the direction of arrow _Y2 .

Further, the rotating arm 10 releases the clamping of the magnetic disk 1 by the clamper 11, and also releases the engagement pin 10c from the hole 19c- ₁ of the displacement member 19, thereby releasing the restriction on rotation of the displacement member 19.
The displacement member 19 has a part of the upper surface 19c- ₂ of the protruding part 19c in contact with the fixed part 12a of the support plate 12, as indicated by the arrow
Since the upward movement in the Y _two directions is restricted, the protruding portion 1 is
The disk 9c is rotated clockwise until the side portion 9c comes into contact with the upright portion 13d of the chassis 13, and returns to the state before the disk 6 was inserted.

Unclamped flexible magnetic disk 6
is pushed out in the direction of arrow _X2 by the abutment piece 19a as the displacement member 19 rotates clockwise, and is ejected to a position slightly protruding from the insertion opening 7a where it can be easily taken out. At the same time as the eject operation, the rotating arm 10 pushes up the protruding piece 23a and the head holder 2
2 is raised so as to be separated from the magnetic disk 1. Therefore, as shown in FIG. 1, the abutting piece 23b of the rotating member 23 is again abutted and locked to the locking portion 19e of the displacement member 19 that has been rotated clockwise.

In this manner, the displacement member 19 allows the head holder 22 to be displaced in the direction of contact with the head only when the disk 6 is inserted. That is, only when the disk 6 is inserted and the head holder 22 is clamped, the head holder 22 is displaced in the head contact direction.
Displacement due to erroneous operation when the disk 6 is not inserted is prevented, and head contact accidents can be reliably prevented.

Furthermore, before the disk 6 is inserted, the displacement member 19 restricts the displacement of the head holder 22 in the direction of contact with the head due to erroneous operation of the clamp operation lever 8.
It also has the function of locating the insertion position when inserting the disk 6, and pushing the disk 6 in the eject direction when ejecting, saving space by eliminating the need for a special member to prevent erroneous clamp operation. It is planned.

Effects of the Invention As described above, the flexible magnetic disk device of the present invention regulates the displacement of the head holder in the abutting direction, and when the displacement member is displaced to a position where the restriction is released from insertion of the disk, the displacement member is displaced. Since the head holder is only allowed to move in the direction of contact with the head when the clamping means is operated, there is no need to use a solenoid as in the past, and the magnetic head only comes into contact with the disk when the clamp is operated after inserting the disk. This makes it possible to reliably prevent accidents such as a pair of opposing magnetic heads coming into contact with each other and not separating due to incorrect clamp operation before inserting the disk, which can reduce the manufacturing cost of the device and eliminate the need for unnecessary parts. By eliminating installation space and effectively utilizing the limited space within the device, it is possible to respond to downsizing.

Further, the displacement member restricts the rotation of the rotation member that restricts the movement of the magnetic head of the head holder in the abutment direction, and furthermore, as the flexible magnetic disk is inserted, the displacement member controls the rotation of the rotation member. The rotating member rotates against the spring member to release the rotation restriction, and only when the flexible magnetic disk is positioned at a predetermined position and the flexible magnetic disk is clamped in this state. The magnetic head of the head holder can be brought into contact with the disk surface through the magnetic head holder, and when the eject operation is performed, the flexible disk is pushed out by the displacement member through the elastic force of the spring member. and the rotating member, multiple functional operations (restriction of rotation of the rotating member, positioning of the flexible magnetic disk,
This method has the advantage of reducing the number of parts in the device and greatly contributing to cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the flexible magnetic disk device of the present invention, FIG. 2 is a plan view for explaining the flexible magnetic disk, and FIG. 3 is a plan view showing the flexible magnetic disk. A perspective view for explaining the state in which the disk is installed in a recording/reproducing device, FIG. 4 is a view for explaining the clamp operation, and FIG. 5 is a view showing the state of the displacement member when inserting the flexible magnetic disk. , FIG. 6 and FIG. 7 are diagrams showing the displaced state of the displacement member in which the restriction is released by inserting the flexible magnetic disk into the mounting position, respectively, and FIG. 8 is a diagram showing the clamp operation state. 9 is a plan view for explaining the state of the displacement member during clamp operation, and FIG. 10 is an exploded perspective view showing the flexible magnetic disk device according to the present invention. DESCRIPTION OF SYMBOLS 1... Magnetic disk, 6... Flexible magnetic disk, 7... Recording/reproducing device, 8... Clamp operating lever (operating member), 10... Rotating arm, 10
h... Locking piece, 11... Clamper, 12... Support plate, 13... Chassis, 14... Shaft, 16
... Torsion spring, 18 ... Cam, 19 ... Displacement member, 19e ... Locking part, 19f ... Groove part, 2
0... Torsion coil spring, 21... Stopper, 22... Head holder, 22a, 23a...
Projection piece, 23... Rotating member, 23b... Contact piece.

Claims (1)

[Claims for Utility Model Registration] A head holder 22 that holds the magnetic head in contact with the disk surface of the flexible magnetic disk 6 so that it can be moved away from the magnetic head.
and a clamper 11, which is rotated so that the inserted flexible magnetic disk is clamped by the clamper 11 by the clamping operation of the operating member 8, and is rotated in the unclamping direction by the ejecting operation of the operating member 8. a rotating arm 10 that rotates to rotate the magnetic head; a rotating member 23 that restricts the movement of the head holder in the direction of contact with the magnetic head and rotates to follow the movement of the rotating arm; and a spring member. The spring member 20 is biased in a predetermined direction by the spring member 20 to restrict the rotation of the rotary member, and the spring member 2 is biased in a predetermined direction by the flexible magnetic disk.
The displacement member 19 rotates while resisting zero, and as the flexible magnetic disk is inserted, the displacement member resists the spring member to release the rotation restriction of the rotary member. Only when the flexible magnetic disk is positioned at a predetermined position and the flexible magnetic disk is clamped in this state, the head holder is rotated through the rotation of the rotating member. A flexible magnetic disk configured to enable the magnetic head to come into contact with the disk surface, and to push out the flexible magnetic disk by the displacement member through the elastic force of the spring member during an eject operation. disk device.