JPH06103571B2 - 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. 8A shows the state before the magnetic disk cartridge device, and FIG. 8B shows the 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.

A cartridge holder 10 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. 2) of the magnetic heads 4 and 6 and the lower surface of the magnetic disk 21. 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
The surface 10d supporting the cartridge is arranged higher than the head surface 4a of the magnetic head 4 by a dimension a ₁ . 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 of claim 1 is a head for writing and / or reading information to and from a disk-shaped recording medium housed in a disk cartridge, and the disk-shaped recording medium supporting the head. In a cartridge-type disk device having a head assembly that moves in the radial direction, the disk cartridge is inserted and mounted at a predetermined position with respect to the head, A disc cartridge supporting member is provided, which has a supporting surface portion that projects toward the disc cartridge side and can support the disc cartridge, and a guide portion that guides the inserted disc cartridge to the supporting surface portion. When the disc is inserted, the disc cartridge When the holding member is displaced to a supporting position capable of supporting the disc cartridge and the disc cartridge is mounted at a predetermined position with respect to the head, the disc cartridge supporting member is moved to a retracted position that does not interfere with the mounting of the disc cartridge. The displacement mechanism for displacing is provided.

According to a second aspect of the present invention, the displacement mechanism is provided with a cartridge eject button portion at one end, and is moved in the disc cartridge insertion direction by pressing the cartridge eject button portion when the disc cartridge is ejected, and when the disc cartridge is mounted, the disc eject button portion is moved. The cartridge ejecting device includes a moving member that moves in a direction opposite to a cartridge inserting direction, an arm portion formed on the moving member, and an inclined surface formed on the supporting member and / or the arm portion. In some cases, the arm moves while pushing the support member via the inclined surface to displace the support member to the support position.

Action The configuration including the disc cartridge support member and the displacement mechanism according to the first aspect acts so that the height at which the disc cartridge is inserted can be brought closer to the head.

The guide portion of the disc cartridge supporting member functions to reliably guide the disc cartridge to the supporting surface portion even when the inserted disc cartridge is curved so as to be convex toward the head side.

The configuration in which the disk cartridge support member is provided in the vicinity of the head assembly acts so as not to increase the weight of the head assembly.

The structure in which the displacement mechanism according to the second aspect uses the moving member provided with the cartridge eject button section operates so as to eliminate the need for special parts.

Embodiment FIG. 1 to FIG. 4 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, and the description thereof will be omitted.

FIGS. 1 (A), 2 and 4 show the state before the cartridge is attached (the state when the cartridge is inserted), and FIGS. 1 (B), 3 and 5 show that the cartridge has been attached. Indicates the status.

Reference numeral 31 is a disk 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 has the tip of the arm portion 31b supported by a shaft 32 extending in the cartridge insertion direction, and the support portion 31a is orthogonal to the cartridge insertion direction as indicated by arrows A ₁ and A _2. It is provided so as to rotate in a plane.

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

Further, the end 31a _-1 of the support portion 31a on the front bezel side is located so as to be displaced from the magnetic head 4 by the dimension c toward the front bezel side (see FIG. 2), and this portion becomes the inclined surface 31a _-2. ing.

In FIG. 6, reference numeral 35 is a disc cartridge support member displacement mechanism for displacing the disc cartridge support member 31,
The arm 36 includes a cam 36a, a spring 37 provided on the shaft 32, and the like.

The spring 37 biases the support member 31 in the direction of arrow A ₁ .

The arm portion 36 is provided at the tip of the cartridge eject lever 38.

In the state where the cartridge eject button 39 is pushed as shown in FIG. 2, the lever 38 is displaced in the direction of the arrow X _1, and the cam portion 36a of the arm portion 36 is in the groove 31b _{-1 of the} arm portion 31b. It has been pushed in, pushing the support member 31 against the spring 37 and pushing it up.
Rotate and displace in the A ₂ direction to support the disk cartridge
It is located at S ₁ .

As shown in FIGS. 1 (A), 4 and 7, this position S ₁ is a position where the supporting portion 31a projects from the head surface of the magnetic head 4 by a slight dimension a ₂ of, for example, about 0.3 mm. Is.

As shown in FIG. 3, when the cartridge eject button 39 is returned, the lever 38 is displaced in the arrow X ₂ direction,
The cam 36a of the arm portion 36 has come out of the groove 31b- ₁ of the arm portion 31b, and is rotatably displaced in the direction of arrow A ₁ by the spring 37 on the support member 31 to reach the retracted position S ₂ .

As shown in FIGS. 1B, 5, and 7, the position S ₂ 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 ( This is the position where it does not interfere with the depression in the direction of arrow Z 1 in FIG. ₁ .

By providing the disk cartridge support member 31 as described above, the cartridge holder 10 has a cartridge support surface 10d from the head surface 4a of the magnetic head 4 of, for example, 0.3 mm as shown in FIGS. 1 (A) and 4. It is arranged at a height position higher by a slight dimension a _{3 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 .

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 ₁ .

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 _-1 of 31a, is guided by the inclined surface 31a _-2 , 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 eject lever 38 is released, and the eject lever 38 returns in the arrow X ₂ direction.

By the return of the eject lever 38, firstly, the supporting member is
31 is unlocked by the cam 36a and is rotated by the spring 32 in the direction of arrow A ₁ to reach the retracted position S ₂ .

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. 1 (B).

In this state, information recording / reproduction is performed.

Next, the operation of separating the disk cartridge 20A will be described.

In FIG. 3, the eject button 39 is pushed in the arrow direction.

As a result, first, the cartridge holder 10 in FIG. 1 (B) is raised in the direction of the arrow Z ₂ and the head arm 5 is rotated upward.

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

Second, the support member 31 is pushed up by the cam 36a,
It is rotated in the direction of arrow A ₂ against the spring 32 and reaches the support position S ₁ .

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.

On the contrary to the above, the arm 36 may not be provided with a cam, and the cam may be provided on the side of the disk cartridge supporting member 31.

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.

EFFECTS OF THE INVENTION As described above, according to the invention of claim 1, the following effects are obtained.

Without making the structure of the head assembly a little complicated, and without increasing the weight of the head assembly a little, the height at which the disk cartridge is inserted is brought close to the head, and the cartridge type disk device is made thinner. You can

It is possible to prevent the seek characteristics of the head assembly from being impaired.

According to the invention of claim 2, the number of parts to be added can be reduced,
Therefore, the cartridge type disk device can be made inexpensive accordingly.

[Brief description of drawings]

1 is a side view of a disk cartridge type magnetic disk device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1 (A), FIG. 3 is a plan view of FIG. 1 (B), Figure 4 shows the first
In FIG. (A), a cross-sectional arrow view taken along the line IV-IV, and FIG.
In FIG. 6B, a cross-sectional arrow view taken along the line VV, FIG. 6 is a view showing a disc cartridge supporting member and a mechanism for displacing the disc cartridge supporting member, and FIG. 7 is a diagram showing displacement of the disc cartridge supporting member. FIG. 8 is a side view of a conventional disk cartridge type magnetic disk device, FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8A, and FIG. It is a perspective view. 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 ……
Disc cartridge support member, 31a ... Disc cartridge support part, 31a- ₁ .. edge, 31a- ₂ ..... Inclined surface, 31b
…… Arm, 32 …… Axis, 32 …… Spring, 35 …… Disc cartridge support member displacement mechanism, 36 …… Arm, 36a …… Cam, 37 …… Spring, 38 …… Cartridge eject lever, 39… … Cartridge eject button, S ₁ …… Support position, S ₂ …… Retracted position.

Claims (2)

[Claims] 1. A head for writing and / or reading information to and from a disc-shaped recording medium housed in a disc cartridge, and a head assembly which supports the head and moves in the radial direction of the disc-shaped recording medium. Have
In a cartridge type disk device having a structure in which the disk cartridge is inserted and mounted at a predetermined position with respect to the head, in the vicinity of the head assembly, the disk cartridge is supported by protruding from the head toward the disk cartridge side. A supporting surface portion and a guide portion for guiding the inserted disc cartridge to the supporting surface portion, and when the disc cartridge is inserted, the disc cartridge supporting member is When the disc cartridge is displaced to a supporting position capable of supporting the disc cartridge and the disc cartridge is mounted at a predetermined position with respect to the head, the disc cartridge supporting member is displaced to a retracted position that does not interfere with the mounting of the disc cartridge. Cartridge disk device according to claim configuration and the providing the displacement mechanism that. 2. The displacement mechanism has a cartridge eject button portion at one end, and moves in the disc cartridge insertion direction when the disc cartridge is ejected when the cartridge eject button portion is pressed. When the disc cartridge is attached, the disc cartridge insertion button is inserted. A moving member that moves in a direction opposite to the direction; an arm portion formed on the moving member; and an inclined surface formed on the support member and / or the arm portion. 2. The cartridge type disk device according to claim 1, wherein the arm member is configured to displace the supporting member to a supporting position by moving the supporting member while pushing the supporting member via the inclined surface.