JPH06103572B2 - Cartridge type disk device - Google Patents

Description

The present invention relates to a cartridge type disk device.

In recent years, portable word processors and personal computers have tended to be further miniaturized (especially thinner).

Along with this, it is required that the cartridge type magnetic disk device incorporated therein also be made thinner.

2. Description of the Related Art FIGS. 8 (A), 8 (B) and 9 show a conventional cartridge type magnetic disk device 1 respectively.

FIG. 8 (A) shows a state before the magnetic disk cartridge is mounted, and FIG. 8 (B) shows a mounted state. FIG. 9 is a sectional view taken along line IX-IX in FIG. 8 (A).

Reference numeral 2 is a front bezel, 3 is a magnetic head carriage, 4 is a lower magnetic head, 5 is a head arm, and 6 is an upper magnetic head.

Reference numeral 7 is a motor, 8 is a turntable, and 9 is a circuit board assembly, which is attached to the bottom side of the apparatus 1.

Reference numeral 10 denotes a cartridge holder, which has holding grooves 10a and 10b on both sides and an opening 10c on the lower surface as shown in FIG.

The reason why the cartridge holder 10 having the lower surface with the opening 10c is used is to increase the degree of freedom of arrangement of the circuit board and other mechanisms and to make the magnetic disk device 1 thinner.

In FIG. 8 (A), 11 is the cartridge insertion port, and the height
It is in the H ₁ position.

The height dimension of the magnetic disk device 1 is h ₁ .

Reference numeral 20 is a disk cartridge in which a magnetic disk 21 is housed.

The cartridge 20 is inserted in the horizontal direction through the insertion port 11 in the direction of the arrow X ₁ in the state where the apparatus 1 is shown in FIG.
It is inserted while being supported by 10a and 10b.

When the upper end 20a of the cartridge 20 in the insertion direction crosses the magnetic heads 4 and 6 and is inserted to the final position P ₁ shown by the chain double-dashed line in FIG. 8A, the cartridge holder 10 is orthogonal to the X ₁ direction. The cartridge 20 descends in the Z ₁ direction and sinks, and the cartridge 20 is mounted as shown in FIG. 8 (B).

That is, the center hub of the magnetic disk 21 is the turntable 8
The magnetic heads 4 and 6 placed on the magnetic disk 21 are inserted into the cartridge 20 through an opening window (not shown) opened by sliding shutters (indicated by reference numeral 22 in FIG. 4) of the magnetic heads 4 and 6. Attach to the upper surface.

In this state, the magnetic disk 21 is rotated and the carriage 3
Is displaced to record and reproduce information.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention When the cartridge 20 is inserted into the cartridge holder 10 and the leading end 20a of the cartridge 20 in the insertion direction collides with the magnetic head 4, the magnetic head 4 is damaged. Therefore, the device 1 needs to be configured so that the cartridge 20 does not collide with the magnetic head 4.

On the other hand, among the disc cartridges, there is also a warped disc cartridge 20A, as shown by the chain double-dashed line in FIG.

When such a cartridge 20A is inserted, it easily collides with the magnetic head 4. Even in such a case, the cartridge holder 10
As shown in FIG. 8 (A), the surface 10d supporting the cartridge has a dimension a ₁ from the head surface 4a of the magnetic head 4.
It is installed only high. For safety, this dimension is set to a few mm.

Therefore, the height H ₁ of the cartridge insertion port 11 from the bottom surface of the device 1 is increased to b ₁ and the height h ₁ of the device 1 becomes large, which makes it difficult to make the device 1 thin. there were.

It is an object of the present invention to provide a cartridge type disk device that solves the above problems.

Means for Solving the Problems The invention according to claim 1 is a structure in which a disk cartridge accommodating a disk is inserted and mounted at a predetermined position with respect to a head, and is usually mounted near the head. A cartridge type disc device having a disc cartridge supporting member located at a retracted position where it does not interfere with the disc cartridge and located at a supporting position protruding from the head when the disc cartridge is inserted. The disc cartridge supporting member has a supporting portion for supporting the inserted disc cartridge, and a guide portion for guiding the inserted disc cartridge to the supporting portion. Of the disc cartridge, which acts on the back side of the supporting portion. The support member,
It is configured to have a lifting mechanism that moves up and down between the retracted position and the support position.

According to a second aspect of the present invention, in the lifting mechanism, the protrusion formed on the main body of the cartridge-type disc device and the disc cartridge support member when the disc cartridge is detached from the predetermined position. And a moving member for moving the disk cartridge supporting member so as to hang from the convex portion when the disk cartridge is mounted at the predetermined position.

Action In the invention of claim 1, the configuration in which the elevating mechanism acts on the back side of the disc cartridge support portion of the disc cartridge support member improves the height position accuracy of the disc cartridge support portion.

As the accuracy improves, the protrusion size from the head can be reduced.

In the invention of claim 2, the configuration in which the convex portion is provided on the main body itself reduces the number of parts and is robust.

Embodiment FIG. 3, FIG. 4, FIG. 6 and FIG. 7 show a magnetic disk device 30 according to an embodiment of the present invention. In each drawing, the same parts as those shown in FIGS. 8 to 10 are designated by the same reference numerals,
The description is omitted.

FIGS. 3 (A) and 6 show the state before the cartridge is mounted (the state when the cartridge is inserted), and FIGS.
The figure shows a state in which the cartridge is mounted.

Reference numeral 31 is a disc cartridge support member, and as shown in FIG.
It is composed of an arm portion 31b extending one side from this.

The support member 31 is supported by a shaft 32 extending in the cartridge insertion direction at the substantially center of the arm portion 31b, and the support portion 31a
Is provided so as to rotate in a plane orthogonal to the cartridge insertion direction, as indicated by arrows A ₁ and A ₂ .

Further, the support member 31 is slidable along the shaft 32 in the directions of the arrows X ₁ and X ₂ .

In addition, a pair of convex portions 31a _-1 , 31a _-2 are formed on the back surface of the support portion 31a.

The convex portion 31a _-1, 31a _-2 is are arranged apart and distance l are aligned on the arrow X _1, X ₂ direction.

Further, of the convex portions 31a _-1 , 31a _-2 , the surface 31a _-1 a, 31a _-2 a on the arrow X ₁ direction side, that is, on the back side of the device 30 is an inclined surface.

The lower end, which is the tip of each of the protrusions 31a _-1 , 31a _-2 , has a flat surface 31a _-1.
b, 31a _-2b .

The supporting portion 31a is arranged at a position on the left side of the lower magnetic head 4 as viewed from the cartridge inserting direction and in a position near the magnetic head 4 so as to extend in the cartridge inserting direction.

Further, in the state where the support portion 31a reaches a support position described later, the end 31a- ₃ of the support portion 31a on the front bezel side is positioned with the dimension c displaced from the magnetic head 4 to the front bezel side ( 2 (see FIG. 2B), this portion is the inclined surface 31a- ₄ .

The front end side 3b- ₁ of the arm portion 31b is fitted into the notch 33a of the slide plate 33 for raising and lowering the disc cartridge.

Reference numeral 34 denotes a torsion coil spring, which is fitted to the shaft 32, is provided with one arm portion 34a engaged with the notch 33b of the slide plate 33, and the other arm portion 34b locked with the arm portion 31b. Yes, support member
Energize 31 in the direction of arrow A ₁ .

In FIG. 5, 35 is a die-cast device body, and 35a
Is its chassis base.

The shaft 32 is fixed on the chassis base 35a by fixing both ends to flanges 35a _-1 , 35a _-2 integrally formed with the chassis base 35a.

The disc cartridge elevating slide plate 33 is provided on the chassis base 35a so as to be slidable in the directions of arrows X ₁ and X ₂ .

Further, the pins 10e on both sides of the cartridge holder 10 of FIG. 10 are fitted in the grooves 33c of the slide plate 33.

When the slide plate 33 slides in the directions of the arrows X ₁ and X ₂ , the support member 31 described above moves integrally with the slide plate 33 in the directions of the arrows X ₁ and X ₂ while being supported by the shaft 32. .

35a _-3 and 35a _-4 are convex portions respectively, and as shown in FIGS. 1, 2 (A), (B) and 5, the chassis base
It is formed integrally with 35a.

The distance between the convex portions 35a _-3 and 35a _-4 is the same as the distance l between the convex portions 31a _-1 and 31a _-2 , and the portion of the supporting member 31 at the arrow X ₁
It is a position facing the convex portions 31a _-1 , 31a _-2 when displaced in the direction.

The front surfaces 35a _-3 a and 35a _-4 a of the convex portions 35a _-3 and 35a _-4 are slopes.

When the slide plate 33 slides in the direction of the arrow X ₂ , the support member 31 is located at the position P ₁₀ shown in FIG. 2 (A).

The convex portions 31a _-1 , 31a _-2 are indicated by arrows with respect to the convex portions 35a _-3 , 35a _-4 , respectively.
The support member 31 is displaced in the X ₂ direction, is displaced in the arrow A ₁ direction, and the support portion 31a is located at the retracted position S ₁ (see FIG. 7).

This position S ₁ is a position lower than the lower surface of the mounted disk cartridge 20 by a dimension δ.

Further, as shown in FIGS. 3B and 5, this position S ₁ is a position where the support portion 31a substantially corresponds to the height of the head carriage 3, and the mounting of the disc cartridge 20 (the third position) is performed.
It is a position where it does not interfere with the sinking in the direction of arrow Z ₁ in the figure (A).

When the slide plate 33 slides in the direction of the arrow X ₁ , the support member 31 also moves in the same direction and reaches the position P ₂₀ shown in FIG. 2 (B).

When the support member 31 moves, the slopes 31a- _1a , 31a _- 2a become slopes 3
5a _-3 a, moves along the 35a _-4 a, protrusions 31a _-1, 31a _-2 convex portion 35a _-3, flat top 35a _-3 b of 35a _-4, rides 35a _-4 b Go up.

As a result, the support member 31 rotates in the direction of the arrow A ₂ against the spring 34, and the support portion 31a projects from the head surface 4a of the magnetic head 4 by a slight dimension a ₂ of, for example, about 0.3 mm. To the supporting position S ₂ (see FIG. 6).

Since the back surface side of the support portion 31a is regulated, the position S ₂ is more accurately determined as compared with the case where the position of the arm portion 31b is regulated.

As described above, by providing the disk cartridge support member 31, the cartridge holder 10 has the cartridge support surface 10d from the head surface 4a of the magnetic head 4 to, for example, 0.3 mm as shown in FIGS. 3 (A) and 6. It is arranged at a height position higher by a slight dimension a _{2 of} mm, that is, a height position lower by several mm than the conventional example.

Along with this, the cartridge insertion opening of the front bezel 2A
The height H ₂ also becomes b ₂ is several mm lower of 11A, the final device 30 is several mm short dimension h ₂ next to the height dimension than the conventional, device 30 is thin in comparison with the conventional .

Here, if it is configured to act on the portion of the arm portion 31b of the support member 31 to restrict the support portion 31a to the support position S ₂ ,
The support position S ₂ also varies due to the variation in the position of the shaft 32 that supports the support member 31, and also when the arm portion 31b is flexibly deformed, it also varies.

However, like the present embodiment, when the back surface of the support portion 31a is actuated to regulate the position, even if the position of the shaft 32 varies, even if the arm portion 31b flexes and deforms, the support portion 31a of the support portion 31a The support position S ₂ does not vary.

Further, since the convex portions 35a _-3 and 35a _-4 are integrally formed on the chassis base 35a, the flat top portions 35a _-3 b and 35a _-4 b of the convex portions 35a _-3 and 35a _-4 are the same. Flat surface 31a _-1 b, 31a _-2 b
Also, the above-mentioned support position S ₂ of the support portion 31a can be determined with high accuracy by reducing the variation.

Therefore, the dimension a ₂ can be made smaller due to the less variation, and the device 30 can be made thinner.

Further, the convex portions 35a _-3 , 35a _-4 are formed integrally with the chassis base 35a, and another member having a convex portion corresponding to the convex portions 35a _-3 , 35a _-4 is provided. Compared with, it requires fewer parts and is more robust.

Next, the mounting operation of the disc cartridge 20 to the device 30 will be described.

The disc cartridge 20 is, as shown in FIG.
It is inserted in the direction of arrow X ₁ through the insertion port 11 in a horizontal position, and the holding grooves 10a, 10 of the cartridge holder 10 are located on both sides.
It is inserted while being supported by b.

The support member 31 is located at the support position S ₂ .

Therefore, even when the warped cartridge 20A is inserted as described above, before the leading end in the insertion direction reaches the position of the magnetic head 4, the substantially center portion in the width direction of the cartridge 20A is located at the disk cartridge support portion. It reaches the end 31a _-3 of 31a, is guided by the inclined surface 31a _-4 , and rides on the support portion 31a. That is, the disk cartridge 20A is pushed up to a position slightly higher than the head surface 4a of the magnetic head 4 in the vicinity of the position facing the magnetic head 4 as shown by the solid line in FIG.

As a result, the cartridge 20A surely secures a slight gap with the head surface 4a of the magnetic head 4 and passes the magnetic head 4 slightly above the magnetic head 4 to reach the final position beyond the magnetic head 4 without colliding with the magnetic head 4. It is inserted up to P ₁ .

When the cartridge 20A is inserted to the final position P ₁ , the detection lever (not shown) rotates, the lock of the slide plate 33 is released, and the slide plate 33 returns in the arrow X ₂ direction.

By the return of the slide plate 33, first, the support member 31 is unlocked by the convex portions 35a _-3 , 35a _-4 , and is rotated by the spring 34 in the arrow A ₁ direction to the retracted position S ₁ . Arrive

Secondly, the cartridge holder 10 descends in the direction of arrow Z ₁ .

The disk cartridge 20A is lowered to a predetermined position together with the cartridge holder 10 without being obstructed by the support member 31, and is mounted as shown in FIG. 3 (B).

In this state, information recording / reproduction is performed.

Next, the operation when the disk cartridge 20A is removed will be described.

In FIG. 3, an eject button (not shown) is pushed.

As a result, first, the slide plate 33 moves in the arrow X ₁ direction, the cartridge holder 10 in FIG. 3B is raised in the arrow Z ₂ direction, and the head arm 5 is rotated upward. It

As a result, the magnetic heads 4 and 6 separate from the magnetic disk 21 and come out of the disk cartridge 20A.

Secondly, the support member 31 rides on the convex portions 35a _-3 , 35a _-4 and is rotated in the direction of arrow A ₂ against the spring 34 to support the support position.
Reach S ₂ .

In this state, the cartridge 20A passes through the insertion port 11A
It is pushed out in the X ₂ direction and released from the device 30.

When the cartridge 20 is pushed out, the lower surface on the back side of the cartridge 20 is supported by the support portion 31a and is maintained at a height position that is reliably separated from the magnetic head 4, and the cartridge 20A has the head surface 4a of the magnetic head 4. Without rubbing, remove from the part corresponding to the magnetic head.

This ensures that the magnetic head 4 is prevented from being damaged even when the cartridge is removed.

Further, another member having a convex portion corresponding to the convex portions 35a _-3 , 35a _-4 is provided, and by moving this member, it acts on the back side of the supporting portion 31a of the supporting member 31 and pushes it up. You may comprise.

The disc cartridge support members may be provided on both the left and right sides when viewed from the cartridge insertion direction.

Further, the present invention can be applied not only to the magnetic disk device but also to an optical disk device. In this case, the cartridge supporting member is provided near the optical head.

As described above, according to the first aspect of the invention, even if the height at which the disc cartridge is inserted is closer to the head than in the conventional case, the disc cartridge collides with the head during the insertion process. It is possible to surely prevent it, and it is possible to surely prevent the head from being damaged, so that the cartridge type disk device can be made thin.

In addition, variations in the height position of the disc cartridge support portion are smaller than those in the case where the disc cartridge support portion is acted on, and the precision is high. This allows
The protrusion size from the head can be set to be smaller by the amount of variation, which allows the cartridge type disk device to be made thinner.

According to the second aspect of the present invention, the robustness can be improved as compared with the configuration in which the convex portion moves, and the height position of the disc cartridge supporting portion can be regulated more accurately.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a cartridge type disk device according to an embodiment of the present invention, FIG. 2 is a view for explaining a displacement of a disk cartridge supporting part in FIG. 1, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a side view of an example disk cartridge type magnetic disk device, FIG. 4 is a plan view of a main part of the cartridge type disk device shown in FIG. 1, and FIG. FIG. 6 is a perspective view with the part removed, FIG. 6 is a sectional view taken along line IV-IV in FIG. 3 (A), and FIG. 7 is a sectional view taken along line VII-VII in FIG. 3 (B). FIG. 8 is a side view of a conventional disk cartridge type magnetic disk device, and FIG. 9 is a view in FIG.
FIG. 10 is a perspective view of a cartridge holder, which is a sectional view taken along the line IX-IX. 2A …… Front bezel, 3 …… Magnetic head carriage,
4 ... Lower magnetic head, 5 ... Head arm, 6 ... Upper magnetic head, 7 ... Motor, 8 ... Turntable,
9: Circuit board assembly, 10: Cartridge holder, 10
a, 10b ... Retaining groove, 10c ... Opening, 10d ... Cartridge support surface, 11A ... Cartridge insertion slot, 20 ... Disk cartridge, 20A ... Warped disk cartridge, 2
1 …… Magnetic disk, 30 …… Magnetic disk device, 31 ……
Disk cartridge support member, 31a _-1 , 31a _-2 ...... Convex part, 31a _-1 a, 31a _-2 a ...... Slope, 31a _-1 b, 31a _-2 b ...... Flat surface, 31a _-3 ...... End , 31a _-4 ... inclined surface, 31b ... arm, 31b
_-1 ...... End, 32 ...... Axis, 33 ...... Sliding plate for raising and lowering disc cartridge, 33a, 33b ...... Notch, 33c ...... Groove, 34 ...... Torsion coil spring, 34a, 34b ...... Arm part, 35 ... … Device main unit, 35a …… Chassis base, 35a _-1 ,, 35a _-2 …… Flange part, 35a _-3 , 35a _-4 …… Convex part, 35a _-3 a, 35a _-4 a …… Slope, 35
a _-3 b, 35a _-4 b ...... Flat top.

Claims (2)

[Claims] 1. A structure in which a disk cartridge containing a disk is inserted and mounted at a predetermined position with respect to a head, and a retracted position that does not interfere with the normally mounted disk cartridge is provided in the vicinity of the head. A cartridge-type disk device having a disk cartridge supporting member located at a supporting position protruding from the head when the disk cartridge is inserted, wherein the disk cartridge supporting member comprises: A structure is provided that has a support portion that supports the inserted disc cartridge and a guide portion that guides the inserted disc cartridge to the support portion, and acts on the back side of the support portion of the disc cartridge support member. Then, the disk cartridge support member,
A cartridge-type disk device having a lifting mechanism for lifting up and down between the retracted position and the support position. 2. The elevating mechanism mounts the convex portion formed on the main body of the cartridge type disc device and the disc cartridge supporting member onto the convex portion during an operation of separating the disc cartridge from the predetermined position. 7. A structure comprising a moving member for moving the disk cartridge support member upward so that the disk cartridge supporting member is moved so as to hang from the convex portion when the disk cartridge is mounted at the predetermined position. 1. The cartridge type disk device according to 1.