JPH0765475A - Disk device - Google Patents

Abstract

PURPOSE:To miniaturize a disk device by connecting attaching and detaching members of a positioning pin and a spindle motor, etc., to a disk cartridge, etc., while turning a base panel upward and withdrawing the same attaching and detaching members from a disk cartridge inserting space while turning the base panel downward. CONSTITUTION:The base panel 15 is turned upward to connect the positioning pin 12 and the spindle motor 11, etc., to the disk cartridge 1 and an optical disk 2. Then, the base panel 15 is turned downward to withdraw the positioning pin 12 and the spindle motor 11 from the disk cartridge inserting space 10. By this method, since the base panel 15 does not have a pickup mounted like the conventional practice, this dead space can be diminished although a dead space for turning the panel 15, etc., is required. Thus, the device can be miniaturized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for recording and reproducing a floppy disk, an optical disk or the like contained in a disk cartridge.

[0002]

2. Description of the Related Art A rotary recording medium reproducing apparatus disclosed in Japanese Patent Publication No. 64-9675 will be described as an example of a conventional disk apparatus. In this rotary recording medium reproducing apparatus, a pickup mechanism for detecting a signal from the rotary recording medium and a spindle mechanism for rotating the rotary recording medium are inclined downward before the rotary recording medium is inserted, so that the rotary recording medium is at a reproducing position. It is fixed on one base that rotates up to become horizontal when inserted, and when the rotating recording medium is inserted, the spindle mechanism and pickup mechanism move up to the rotating recording medium playback position as the base rotates. The rotary recording medium is supported and rotated by the spindle mechanism from the lower surface side, and the pickup mechanism reproduces the rotary recording medium from the lower surface side.

In the rotary recording medium reproducing apparatus in which the spindle mechanism and the pickup mechanism are raised to the rotary recording medium reproducing position with the rotation of the base, the pickup mechanism and the spindle mechanism are fixed in the vertical direction, and the rotary recording medium side is fixed by the elevator mechanism. It can be constructed at a low cost and in a small size as compared with a type in which the space between the reproduction position and the insertion opening is vertically moved.

[0004]

However, in the above-mentioned rotary recording medium reproducing apparatus, since the spindle mechanism and the pickup mechanism rotate together with the base, there is a large dead space for rotating them, and further miniaturization is achieved. Is hindering

[0005]

According to a first aspect of the present invention, in a front loading type disk device in which a disk cartridge containing an information recording disk is horizontally mounted and removed from the front of the apparatus, signals are exchanged with the information recording disk. And a detachable member that is vertically fixed to the information reading position and is connected to the information recording disc and the disc cartridge from the orthogonal direction, is rotated upward to attach and detach the disc cartridge and the information recording disc. The base panel is rotatable to a set position where the members are connected and an eject position where the removable member is retracted from the disc cartridge insertion space by rotating downward.

According to a second aspect of the present invention, in the first aspect of the invention, the eject position is such that the plane including the bottom surface of the hub of the information recording disk and the taper portion formed at the tip of the spindle as the detachable member intersect. The base panel tilt angle of was set.

According to a third aspect of the present invention, in the invention according to the first aspect, the base panel at the eject position is arranged so that the plane including the bottom surface of the hub of the information recording disk and the disk supporting surface of the spindle as the detachable member intersect. The tilt angle was set.

According to a fourth aspect of the invention, in the first, second or third aspect of the invention, the bottom edge portion located on the opposite side of the pivot fulcrum of the base panel of the spindle motor, which is the detachable member, is chamfered.

According to the invention of claim 5, claims 1, 2,
In the invention of 3 or 4, a spring member for urging the base panel upward is provided, and the base panel is positioned at the eject position against the urging force of the spring member by engaging with the base panel and the disc cartridge of the disk cartridge. A slide engagement member that slides in association with the insertion and releases the engagement is provided.

According to a sixth aspect of the invention, in the fifth aspect of the invention, it is connected to a shutter opening member that opens the shutter of the disk cartridge in synchronization with the insertion of the disk cartridge, and slides in conjunction with the shutter opening operation. The slide engagement member is configured to release the engagement.

According to the invention of claim 7, claims 1, 2,
In the invention described in 3, 4, 5 or 6, an emergency eject member having an operation portion facing the front panel of the apparatus and an inclined portion for rotating the base panel downward is slidably provided, and the operation portion is pressed. Operation holes were formed in the front panel of the device.

According to an eighth aspect of the invention, in the seventh aspect of the invention, the operation portion of the emergency eject member is provided with a projection that fits into the operation hole formed on the front surface of the apparatus.

In the invention according to claim 9, claim 7 or 8
In the invention described above, the elastic member is provided on at least one of the operating portion of the emergency eject member or the abutting portion of the device front panel with which the operating portion abuts.

[0014]

According to the first aspect of the present invention, the base panel is pivoted upward to connect the detachable member to the disc cartridge and the information recording disc, and the base panel is pivoted downward to insert the detachable member into the disc cartridge. Since it is retracted from the space, a dead space for rotating them is necessary, but the dead space is small because the pickup is not attached to the base panel as in the conventional case.

In this case, according to the second aspect of the invention, the base panel tilt angle at the eject position is set so that the plane including the bottom surface of the hub of the information recording disk and the taper portion formed at the tip of the spindle intersect. Since the rotation angle of the base panel is narrowed, the dead space becomes smaller. When the disc cartridge is inserted, the hub of the information recording disc and the spindle come into contact with each other, but the information recording disc escapes upward due to play in the disc cartridge, so that the disc can be inserted without any problem.

Further, according to the third aspect of the invention, the base panel tilt angle at the eject position is set so that the plane including the bottom surface of the hub of the information recording disk intersects with the disk supporting surface of the spindle. The rotation angle of the base panel becomes narrower, and the dead space becomes smaller. When the disc cartridge is inserted, the hub of the information recording disc and the spindle come into contact with each other, but the information recording disc escapes upward due to play in the disc cartridge, so that the disc can be inserted without any problem.

In these inventions, according to the invention described in claim 4, since the bottom edge portion located on the opposite side of the rotation fulcrum of the base panel of the spindle motor is chamfered,
The thickness of the device can be reduced accordingly.

According to the fifth aspect of the invention, when the disc cartridge is inserted, the slide engagement member slides in conjunction with the disc cartridge, and the engagement between the slide engagement member and the base panel is released. It When the engagement is released, the base panel is rotated upward by the urging force of the spring member, and the positioning pin and the spindle motor are connected to the disc cartridge and the information recording disc, respectively.

In this case, when the disc cartridge is inserted, the shutter opening member opens the shutter of the disc cartridge in association with the insertion of the disc cartridge. Then, the slide engagement member slides in association with the operation of the shutter opening member to release the engagement with the base panel. When the engagement is released, the base panel is rotated upward by the urging force of the spring member, and the positioning pin and the spindle motor are connected to the disc cartridge and the information recording disc, respectively.

According to the seventh aspect of the invention, when the emergency eject member is pushed by pushing the operation portion through the operation hole, the base panel is rotated downward by the inclined portion and the positioning pin and the spindle motor are moved to the disk. The cartridge is retracted from the space for inserting the cartridge, and the connection between them and the disc cartridge and the information recording disc is released.

According to the invention described in claim 8, since the projection provided on the operation portion of the emergency eject member and the operation hole formed on the front surface of the device are fitted to each other, dust is prevented from entering the device through the operation hole. To be prevented.

According to the invention of claim 9, the clearance is prevented by the elastic member provided on at least one of the operating portion of the emergency eject member and the abutting portion of the front panel of the apparatus with which the operating portion abuts. Dust is prevented from entering the device through the operation hole.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. The disc apparatus of the present embodiment is for recording and reproducing information on an optical disc 2 which is an information recording disc contained in a disc cartridge 1 as shown in FIG. An access window 3 is formed in the disc cartridge 1. The access window 3 is provided so that a spindle motor for driving the optical disc 2 and a pickup for exchanging signals with the optical disc 2 face the optical disc 2. The access window 3 is provided with a slidable shutter 4, and the access window 3 is normally closed by the shutter 4 biased by a spring (not shown). Further, the disc cartridge 1 has a notch 5 for auto loading,
A write protect slider 6, a positioning hole 7, etc. are provided.

FIGS. 1 and 3 to 5 show a disk device of this embodiment. First, a cartridge holder 9 having a U-shaped cross section is attached to the upper surface of a box-shaped fixed chassis 8 opened downward, and a disc cartridge insertion space 10 is formed between them. Then, the spindle motor 1 is made to face the disk cartridge insertion space 10 through the hole 8a formed in the fixed chassis 8.
1, positioning pin 12, disk type determination switch 13
And a pickup 14 are provided. The pickup 14 is attached to the fixed chassis 8, and the spindle motor 11, the positioning pin 12, and the disc type determination switch 13 that are detachable members are attached to a base panel 15.

The base panel 15 is rotatably connected to the fixed chassis 8 by a pair of tabs 16 formed upright on both sides of the rear end, and its tip is directed toward the disc insertion opening 17 side. More specifically, the tabs 18 are formed on both sides of the fixed chassis 8 so as to correspond to the tabs 16, and pins 19 are penetrated through the corresponding tabs 18 and 16 to form the base panel 15. The fixed chassis 8 is connected. The pin 19 is prevented from coming off by an E ring 20. Further, the base panel 15 is biased upward by the spring 21. Then, the slide engagement member 22 engages with the base panel 15 and positions the base panel 15 at the eject position inclined downward against the biasing force of the spring 21.

The slide engaging member 22 is shown in FIGS.
As shown in, the shaft 23 that is slidably attached to the fixed chassis 8 and that protrudes from the tip side of the fixed chassis 8 is
It engages with a notch 24 formed in the base panel 15 and opened rearward. This slide engagement member 22
The sliding direction of is aligned with the insertion direction of the disc cartridge 1, and is normally urged by a spring 25 in the engagement direction that coincides with the disc cartridge ejection direction.
An interlocking plate 22a is formed so as to be positioned in the disc cartridge insertion space 10 so as to move together with the disc cartridge 1 inserted from the disc insertion opening 17. When the interlocking plate 22a is pressed against the tip of the disc cartridge 1 inserted from the disc insertion opening 17, the slide engagement member 22 is moved to the disc cartridge 1 by the interlocking plate 22a.
At the same time, the shaft 23 and the notch 24 are disengaged by sliding in the engagement releasing direction.

The base panel tilt angle of the base panel 15 which is positioned at the eject position by engaging with the slide engaging member 22 is set as follows. The chamfered portion C formed at the tip of the spindle 26 of the spindle motor 11 mounted on the base panel 15 intersects the plane including the bottom surface of the hub 2a mounted at the center of the optical disc 2. It is set. The spindle 26 has a center shaft 26 that fits in a shaft hole 2b formed in the hub 2a.
An upward flange 26b for supporting the optical disk 2 from below is formed around a.

Next, an eject motor 27 is provided in this disk device. This eject motor 2
7, a kind of eccentric cam 28 in which a pin 28b is erected at an eccentric position of the disk 28a is attached. The eccentric cam 28 drives a tab 29 extending to the tip of the base panel 15 to rotate the base panel 15 to an eject position against the biasing force of the spring 21. The eject motor 27 is activated when an eject button (not shown) is operated.

Further, in the disc device of this embodiment, the emergency eject member 30 is provided so that the disc in the device can be ejected even in the case of a power failure in which the eject motor 27 is not activated.
Is provided with an emergency ejection mechanism. The emergency eject member 30 is slidably attached to the inner side surface of the fixed chassis 8 as shown in FIGS. 4 and 5. This sliding direction is the same as the disk cartridge 1
The emergency eject member 30 is arranged so that the operation portion 30a at the tip which is aligned with the inserting direction of the spring and which is perpendicular to the sliding direction comes into contact with the front surface of the fixed chassis 8.
Energized with 1. A protrusion 30b that fits into an operation hole 32 formed on the front surface (front panel) of the fixed chassis 8 is formed on the front surface of the operation portion 30a.
Further, an elastic member 3 such as a sponge is attached to the operation portion 30a.
3 is attached. Then, the emergency eject member 3
At the rear end of 0, an inclined surface 35 that is an inclined portion that is in contact with a shaft 34 that is provided on the side of the base panel 15 is formed. The slope 35 is formed by the emergency eject member 30.
It is formed downward so that the base panel 15 can be rotated downward in accordance with the slide.

Next, since the disk cartridge 1 to be inserted into this apparatus is provided with the shutter 4 as described above, the shutter opening for opening the shutter 4 as the disk cartridge 1 is inserted. A lever 36 is provided. This shutter release lever 3
6 is rotatably attached to the upper surface of the fixed chassis 8 with a fulcrum 37 as a fulcrum, so that the shutter 4 is opened while the disk cartridge 1 is inserted and is tilted in a direction orthogonal to the insertion direction. Has been Normally, it is urged by a spring (not shown) and held in a standing state substantially along the insertion direction of the disc cartridge 1. In addition, the engagement element 38 that is engaged with the shutter 4
Is attached to the tip of the shutter release lever 36.

Reference numeral 39 denotes an outer case, and the outer case 39 is formed with openings corresponding to the disc insertion opening 17 and the operation hole 32. Furthermore, 40
Is a cover plate that closes the bottom surface of the box-shaped fixed chassis 8 that opens downward.

The operation of the disk device having such a structure when the disk cartridge 1 is attached or detached will be described with reference to FIG. When the disc cartridge 1 is inserted into the disc insertion opening 17, first, the hub 2a corresponds to the chamfered portion C of the spindle 26 as shown in FIG. However, the optical disc 2 within the disc cartridge 1 is ± 1 mm.
Since it is possible to rattle up and down to some extent, if the disc cartridge 1 is pushed in as it is, the optical disc 2 will escape upward as shown in FIG. 6B and can be pushed in without any problem.

When the disk cartridge 1 is further pushed, the tip of the disk cartridge 1 is interlocked with the interlocking plate 22a of the slide engaging member 22.
, The slide engagement member 22 moves with the disc cartridge 1 and slides in the engagement release direction, and the engagement between the base panel 15 and the slide engagement member 22 is released (FIG. 6C). Then, when the disc cartridge 1 is pushed to a position where the positioning hole 7 of the disc cartridge 1 and the positioning pin 12 of the base panel 15 coincide with each other, the base panel 15 is rotated upward by the urging force of the spring 21 to perform positioning. The pin 12 is fitted into the positioning hole 7 to perform positioning, and the spindle 26 is moved to the optical disk 2
(FIG. 6 (d)).

Further, at this time, as shown in FIG. 7, an engaging element 38 provided at the tip of the shutter opening lever 36.
Engages the shutter 4 and the disc cartridge 1
The shutter release lever 36 moves the shutter 4
The shutter 4 is opened by falling in the opening direction.

Next, at the time of ejecting, if an eject button (not shown) is pressed, the eject motor 27 rotates and the eccentric cam 28 drives the tab 29 extending to the tip of the base panel 15 to drive the base panel 15. The spring 21
It is rotated to the eject position against the urging force of. When the base panel 15 is rotated to the eject position, the positioning pin 12 is removed from the positioning hole 7, and the disc cartridge 1 is ejected by the biasing force of the spring 25. At the same time, the slide engagement member 22 and the base panel 15 are engaged with each other, and the base panel 15 is positioned at the eject position.

As described above, in the disk device of this embodiment,
The base panel 15 rotates upward to connect the positioning pin 12 and the spindle motor 11 to the disc cartridge 1 and the optical disk 2, and the base panel 15 rotates downward to insert the positioning pin 12 and the spindle motor 11 into the disc cartridge. Since the space 10 is retracted from the space 10, a dead space for rotating them is required.
Since 4 is not attached, the dead space can be reduced and the device can be downsized.

Further, the taper portion C formed on the plane including the bottom surface of the hub 2a of the optical disc 2 and the tip of the spindle 26.
Since the base panel tilt angle at the eject position is set so as to intersect with, the rotation angle of the base panel 15 is narrowed, so that the dead space can be made smaller and the device thickness can be made thinner. Therefore, the device can be made smaller.

Further, as shown in FIG. 8, if the plane including the bottom surface of the hub 2a of the optical disk 2 and the upper surface of the flange 26b that is the disk supporting surface of the spindle 26 intersect, the base panel tilt angle at the eject position is set. , The rotation angle of the base panel 15 can be further narrowed,
The device can be made even smaller. Note that if this setting is made, when the disc cartridge 1 is inserted,
The upper surface of the flange 26b collides with the hub 2a, but since the optical disk 2 can rattle up and down by about ± 1 mm in the disk cartridge 1, if the disk cartridge 1 is pushed in as it is, the optical disk 2 escapes upward by a certain amount. The disk cartridge 1 can be pushed in without it.

Further, as shown in FIG. 9, by cutting the bottom surface of the spindle motor 11 in accordance with the inclination, the device can be made thinner.

In the optical disk device of this embodiment, the positioning pin 12 is interlocked with the insertion of the disk cartridge 1.
And connecting the spindle motor 11, the disk cartridge 1 and the optical disk 2 to the base panel 1
5, a spring 21 for urging the disk cartridge 5 upward is provided to engage with the base panel 1 to position the base panel 1 at the eject position against the urging force of the spring 21.
Since it is realized by a simple structure in which the slide engaging member 22 that slides in association with the insertion of the above is released to release the engagement, it can be made inexpensive and small.

Then, as shown in FIG. 10, this optical disk device is provided with a rod 41, etc., through the operation hole 32 and an operation portion 30a.
When the emergency eject member 30 is pushed in by pushing, the slope 35 causes the base panel 15 to rotate downward,
Since the positioning pin 12 and the spindle motor 11 are retracted from the disc cartridge insertion space 10 and the connection between them and the disc cartridge 1 and the optical disc 2 is released, the emergency eject member 30 is pushed in even when a power failure occurs and the disc cartridge 1 is removed. You can take it out.

Moreover, since the operation portion 30a of the emergency eject member 30 is provided with the projection 30b and the projection 30b and the operation hole 32 are fitted to each other, it is possible to prevent dust from entering the apparatus through the operation hole 32. You can Further, as shown in FIG. 11, if the protrusion 30b is tapered, the operation hole 32
Since it fits in without any clearance, it is possible to prevent dust from entering more reliably. Further, since the elastic member 33 attached to the operation portion 30a of the emergency eject member 30 prevents a clearance between the operation portion 30a and the front surface of the fixed chassis 8 with which the operation portion 30a abuts, dust from the operation hole 32 into the apparatus is prevented. Can be more reliably prevented from entering.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those shown in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted.
In this embodiment, instead of the slide engaging member 22, the slide engaging member 42 engages with the base panel 15 and resists the biasing force of the spring 21 to the eject position where the base panel 15 is inclined downward. Have been positioned.

The slide engagement member 42 is slidably attached to the fixed chassis 8, and a shaft 43 projecting laterally from the tip end thereof is formed in the base panel 15 instead of the notch 24. Notch 44 with front opening
Is engaged with. The slide engagement member 42 slides in the same direction as the disc cartridge 1 is inserted, and is biased by a spring 45 in the engagement release direction, which coincides with the disc cartridge ejection direction.

The slide engaging member 42 is connected to the shutter opening lever 46. The shutter release lever 46 is a fulcrum 37 on the upper surface of the fixed chassis 8.
The shutter 4 is rotatably mounted with the fulcrum as a fulcrum, and the shutter 4 is opened while the disk cartridge 1 is inserted and is tilted in a direction orthogonal to the insertion direction. Normally, it is urged by a spring (not shown) and held in a standing state substantially along the insertion direction of the disc cartridge 1. The standing bent portion 43 of the slide engagement member 42 is in contact with the end of the shutter release lever 46 on the opposite side of the fulcrum 37 by the biasing force of the spring 45. Then, the shutter release lever 46
Is positioned at an upright position by an urging force of a spring (not shown) so that the slide engaging member 42 is positioned at an engaging position for engaging the base panel 15 against the urging force of the spring 45. When the shutter release lever 46 falls, the slide engagement member 42 slides in the engagement release direction by the urging force of the spring 45.

In such a structure, when the disc cartridge 1 is inserted, the shutter 4 of the disc cartridge 1 is opened while the shutter release lever 46 is tilted as the disc cartridge 1 is inserted as shown in FIGS. At this time, the slide engagement member 42 slides in the engagement releasing direction in association with the tilting operation of the shutter release lever 46, and the engagement between the base panel 15 and the slide engagement member 42 is released. Then, when the disc cartridge 1 is pushed to a position where the positioning hole 7 of the disc cartridge 1 and the positioning pin 12 of the base panel 15 coincide with each other, the base panel 15 is rotated upward by the urging force of the spring 21 to perform positioning. Pin 12
Is fitted into the positioning hole 7 for positioning, and the spindle 26 is connected to the optical disk 2.

Next, at the time of ejecting, when an eject button (not shown) is pushed, the eject motor 27 rotates and the eccentric cam 28 drives the tab 29 extending to the tip of the base panel 15 to drive the base panel 15. The spring 21
It is rotated to the eject position against the urging force of. When the base panel 15 is rotated to the eject position, the positioning pin 12 is pulled out from the positioning hole 7, so that the disc cartridge 1 is ejected by the force that urges the shutter opening lever 46 to the upright position. At the same time, the slide engagement member 42 and the base panel 15 are engaged with each other, and the base panel 15 is positioned at the eject position.

As described above, in the disc apparatus of this embodiment, the slide engagement member 42 is attached to the disc cartridge 1
The shutter 4 of the disc cartridge 1 is interlocked with the insertion of the disc.
Since it has a simple structure in which it is connected to a shutter opening lever 46 for opening the shutter and slides in conjunction with the shutter opening operation to release the engagement, it can be made inexpensive and compact.

[0049]

According to the first aspect of the invention, the base panel is rotated upward to connect the attachment / detachment members such as the positioning pin and the spindle motor to the disc cartridge and the information recording disc, and the base panel is rotated downward. Since the positioning pins and the attachment / detachment members such as the spindle motor are retracted from the disc cartridge insertion space by moving, a dead space for rotating them is required, but the optical pickup is attached to the base panel as in the past. Since it is not present, the dead space can be reduced, and the device can be downsized.

In this case, according to the second aspect of the invention, the base panel tilt angle at the eject position is set so that the plane including the bottom surface of the hub of the information recording disk and the taper portion formed at the tip of the spindle intersect. Since the rotation angle of the base panel is narrowed, the dead space can be further reduced, the thickness of the device can be reduced, and the device can be further downsized.

Further, according to the third aspect of the invention, the base panel tilt angle at the eject position is set so that the plane including the bottom surface of the hub of the information recording disk and the disk supporting surface of the spindle intersect. The rotation angle of the base panel can be further narrowed, the dead space can be further reduced, the thickness of the device can be further reduced, and the device can be further downsized.

In these inventions, according to the invention described in claim 4, since the bottom edge portion located on the opposite side of the rotation fulcrum of the base panel of the spindle motor is chamfered,
The thickness of the device can be reduced accordingly, and the device can be downsized.

According to the fifth aspect of the invention, the base panel is urged upward to connect the positioning pin and the spindle motor to the disc cartridge and the information recording disc in association with the insertion of the disc cartridge. A slide engagement in which a spring member is provided, the base panel is positioned at the eject position against the biasing force of the spring member by engaging with the base panel, and slides in conjunction with the insertion of the disc cartridge to release the engagement. Since it is realized by a simple structure provided with members, the device can be downsized and the cost can be reduced.

In this case, according to the sixth aspect of the present invention, the slide member is connected to a shutter opening member that opens the shutter of the disk cartridge in association with the insertion of the disk cartridge, and is linked to the shutter opening operation. Since the simple structure for sliding and releasing the engagement is adopted, in the device having the shutter opening member, the device can be downsized and the cost can be reduced.

According to the seventh aspect of the present invention, when the operation portion is operated through the operation hole to push in the emergency eject member, the base panel is pivoted downward by the inclined portion so that the positioning pin and the spindle motor are moved. Since the disc cartridge and the information recording disc can be released from the disc cartridge insertion space and the connection between the disc cartridge and the information recording disc can be released, the disc cartridge can be taken out even in the event of a power failure or the like.

In this case, according to the invention described in claim 8, since the projection provided on the operation portion of the emergency eject member and the operation hole formed on the front surface of the device are fitted to each other, dust from the operation hole into the device is generated. Can be prevented.

Further, according to the ninth aspect of the invention, the clearance is prevented by the elastic member provided on at least one of the operating portion of the emergency eject member or the abutting portion of the front panel of the apparatus with which the operating portion abuts. Therefore, it is possible to prevent dust from entering the device through the operation hole.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a disc cartridge.

FIG. 3 is an exploded perspective view of the device.

FIG. 4 is a vertical cross-sectional side view including an emergency eject member.

FIG. 5 is an exploded perspective view showing a mounting portion of the emergency eject member.

FIG. 6 is a vertical cross-sectional side view showing the insertion of the disc cartridge step by step.

FIG. 7 is a plan view sequentially showing a shutter opening operation when a disc cartridge is inserted.

FIG. 8 is a vertical cross-sectional side view showing a modified example for achieving a smaller size and a thinner shape.

FIG. 9 is a vertical cross-sectional side view showing a modified example for achieving a smaller size and a thinner shape.

FIG. 10 is a vertical sectional side view showing the operation of the emergency eject member.

FIG. 11 is a vertical sectional side view showing a modified example of the operation unit.

FIG. 12 is a vertical sectional side view showing a second embodiment of the present invention.

FIG. 13 is a plan view thereof.

FIG. 14 is a vertical sectional side view in which a disc cartridge is inserted.

FIG. 15 is a plan view thereof.

[Explanation of symbols]

 1 Disc Cartridge 2 Information Recording Disc 2a Hub 4 Shutter 7 Positioning Hole 10 Disc Cartridge Inserting Space 11 Detachable Member (Spindle Motor) 12 Detachable Member 14 Pickup 15 Base Panel 21 Spring Member 22 Slide Engagement Member 26 Detachable Member (Spindle) 26b Disc Support surface 30 Emergency eject member 30a Operation part 30b Projection 32 Operation hole 33 Elastic member 35 Inclination part 36 Shutter release member 42 Slide engagement member 46 Shutter release member C Tapered part

Claims (9)

[Claims] 1. In a front-loading type disc device in which a disc cartridge containing an information recording disc is horizontally mounted and detached from the front of the device, a pickup for exchanging signals with the information recording disc is vertically fixed at an information reading position. A detachable member that is connected to the information recording disc and the disc cartridge in an orthogonal direction and is rotated upward, and a set position where the detachable member is coupled to the disc cartridge and the information recording disc, and a downward position. The disk device is provided on a base panel that is rotatable to an eject position for retracting the removable member from the disk cartridge insertion space. 2. The base panel inclination angle of the eject position is set so that a plane including the bottom surface of the hub of the information recording disk and a taper portion formed at the tip of the spindle as a detachable member intersect with each other. Item 1. The disk device according to item 1. 3. The tilt angle of the base panel at the eject position is set so that the plane including the bottom surface of the hub of the information recording disk and the disk supporting surface of the spindle, which is the detachable member, intersect with each other. Disk device. 4. The disk device according to claim 1, wherein the bottom edge portion located on the opposite side of the rotation fulcrum of the base panel of the spindle motor as a detachable member is chamfered. 5. A spring member for urging the base panel upward is provided, which engages with the base panel to position the base panel at the eject position against the urging force of the spring member and interlocks with the insertion of the disc cartridge. 5. The disk device according to claim 1, further comprising a slide engagement member that slides and releases the engagement. 6. A slide engaging member that is connected to a shutter opening member that opens the shutter of the disk cartridge in synchronization with the insertion of the disk cartridge and that slides and releases the engagement in association with the shutter opening operation. The disk device according to claim 5, which is characterized in that. 7. An emergency eject member slidably provided with an operation section facing the apparatus front panel and an inclined section for rotating the base panel downward, and an operation hole for pressing the operation section is provided with the operation front panel. 7. The disk device according to claim 1, 2, 3, 4, 5 or 6, wherein 8. The disk device according to claim 7, wherein a projection that fits into an operation hole formed on the front surface of the device is provided in the operation portion of the emergency eject member. 9. The disk device according to claim 7, wherein an elastic member is provided on at least one of the operating portion of the emergency eject member and the abutting portion of the front panel of the device with which the operating portion abuts.