JP2001093215A - Cartridge holding mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a manufacturing cost by holding a cartridge in its mounting position without using a metallic leaf spring. SOLUTION: This holding mechanism comprises a cap 12 which opens and closes an insertion port 5a to be inserted with the cartridge 100 and is pressed by the cartridge inserted from the insertion port so as to be moved toward the open position where the insertion port is opened, a base chassis 19 which is arranged with the cartridge inserted from the insertion port in the mounting position and an energizing means 31 which imparts the energizing force to the cap in the direction where the cartridge inserted from the insertion port is pressed toward the base chassis.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cartridge holding mechanism. More specifically, the present invention relates to a technical field of a cartridge holding mechanism for holding a cartridge having a recording medium accommodated in a case body at a mounting position where information signals can be reproduced or recorded on the recording medium.

[0002]

2. Description of the Related Art A disc reproducing apparatus capable of reproducing information signals from a cartridge having a recording medium accommodated in a case body, for example, an optical disk of a disk cartridge having an optical disc rotatably accommodated in the case body. There is.

In such a disk reproducing apparatus,
It has a rotatable lid that opens and closes the insertion slot, the lid is rotated in the opening direction, a disk cartridge is inserted from the insertion slot, and the inserted disk cartridge reproduces information signals from a disk-shaped recording medium. Some are designed to be transported to possible mounting positions.

[0004] The disk cartridge conveyed to the mounting position is arranged on a base chassis provided with a disk table and an optical head. Here, a disk-shaped recording medium is mounted on the disk table, and the disk-shaped recording medium is rotated as the disk table rotates. The information signal recorded on the disc-shaped recording medium is reproduced by rotating the recording medium and irradiating the recording medium with a laser beam through the optical head.

At the mounting position, it is necessary to stably hold the disk cartridge in order to perform an appropriate reproducing operation. In a conventional disk reproducing apparatus, the disk cartridge is held at the mounting position. This is done by pressing the disk cartridge against the base chassis with a metal leaf spring.

[0006]

However, when the disk cartridge is held at the mounting position by a metal leaf spring as in the conventional disk reproducing apparatus, the metal leaf spring is expensive. For this reason, there is a problem that the manufacturing cost of the disk reproducing apparatus is high.

Further, when the disk cartridge is held by a metal leaf spring, a plurality of leaf springs are usually required because the leaf springs respectively press the portions near one end of one surface of the case body of the disk cartridge. This has led to further cost increases.

Therefore, the cartridge holding mechanism according to the present invention comprises:
An object of the present invention is to overcome the above-described problems and to reduce the manufacturing cost by holding the cartridge at the mounting position without using a metal leaf spring.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a cartridge holding mechanism according to the present invention opens and closes an insertion slot into which a cartridge is inserted and presses the insertion slot from the insertion slot to close the insertion slot. A lid that is operated toward an open position to be opened, a base chassis in which a cartridge inserted from the insertion port is disposed at a mounting position, and a direction in which the cartridge inserted from the insertion port into the lid is pressed against the base chassis. And an urging means for applying the urging force.

Accordingly, the cartridge holding mechanism of the present invention does not require a metal leaf spring to hold the cartridge at the mounting position.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cartridge holding mechanism of the present invention will be described below with reference to the accompanying drawings.

In the embodiment described below, the present invention can perform both recording and reproduction on a magneto-optical disk of a disk cartridge in which a magneto-optical disk is rotatably housed in a case body. This is applied to a cartridge holding mechanism provided in a disk recording / reproducing apparatus.

The disk recording / reproducing apparatus 1 includes required members and mechanisms in an outer casing (not shown) (see FIGS. 1 to 3).

A housing 2 is disposed in an outer housing of the disk recording / reproducing apparatus 1. The housing 2 includes a top plate 3 and side surfaces 4 protruding downward from both side edges of the top plate 3, respectively. 4 and a front part 5 protruding downward from the front edge of the top plate part 3 are integrally formed. The front ends of the side portions 4 and the left and right ends of the front portion 5 are formed continuously.

A motor mounting portion 3a protrudes from a portion near the rear end of the left edge of the top plate portion 3, and a drive motor 6 is mounted on the motor mounting portion 3a. The motor shaft of the drive motor 6 projects upward from the motor mounting portion 3a, and the motor gear 7 is fixed to the motor shaft.

Intermediate gears 8 and 9 are rotatably supported on the left end of the top plate portion 3 in a state of being meshed with each other toward the rear end side. A motor gear 7 is engaged with the intermediate gear 8 and an intermediate gear 9 is provided. And the loading gear 10 is meshed.

The loading gear 10 is rotatably supported at a substantially central portion of the top plate 3, and has an operation protrusion 10a protruding upward at an outer peripheral edge. Further, on the outer peripheral edge of the loading gear 10, a drawing protrusion 10b protruding downward is formed at a position separated from the action protrusion 10a.

When the driving motor 6 is rotated, the driving force of the driving motor 6 is transmitted to the loading gear 10 via the motor gear 7, the intermediate gear 8 and the intermediate gear 9, and the loading gear 10 is driven. It is rotated in the direction corresponding to the rotation direction of.

A circuit board 11 is provided on the right side of the rear end of the top plate 3.
The circuit board 11 has a reproduction switch 11a on the front side and a recording switch 11b on the rear side. A regulating protrusion 3b extending in the left-right direction and projecting upward is integrally formed at the front end of the top plate portion 3.

The front portion 5 of the housing 2 is formed with a horizontally long rectangular insertion opening 5a. Support recesses 5b and 5b are formed in the front surface 5 at the upper end of the left opening edge and the upper end of the right opening edge of the insertion opening 5a, respectively.

The front part 5 has a horizontally long rectangular lid 12.
Are rotatably supported, and supported shafts 12 a, 12 a are integrally formed on left and right side edges of the lid 12. And
A spring hook 12b is integrally formed on the rear surface of the lid 12 at the upper end of the center in the left-right direction. Further, a stopper piece 12c protruding downward from the lower edge of the right end of the lid 12 is integrally formed.

Thus, the lid 12 is supported by the supported shafts 12a,
2 a is inserted and supported in supporting recesses 5 b and 5 b formed in the front surface 5, thereby being rotatably supported by the front surface 5.

Support grooves 5c, 5c extending in the vertical direction are formed at both left and right ends of the front part 5, and the laterally substantially rectangular outer lid 13 is movable in the support grooves 5c, 5c in the vertical direction. Supported. An engagement recess 13a is formed on the back surface of the outer lid 13 (see FIG. 4).

The holder 14 is provided with the catcher 1
6 is movably supported, and the main body 15 is
And a rear surface portion 18 protruding downward from a rear edge of the upper surface portion 17.
Are integrally formed, and a rack portion 17a extending in the front-rear direction is integrally formed at a position near the left end of the upper surface portion 17. Then, at a position near the front end of the upper surface portion 17,
An acting groove 17b opened upward is formed.

A catcher 16 is movably supported at the rear end of the upper surface 17 of the main body 15. The catcher 16 has a main surface portion 16a, a pressed portion 16b protruding substantially rightward from the main surface portion 16a, and a substantially L-shaped holding protrusion 16c protruding downward from the main surface portion 16a. . The catcher 16 is located on the upper surface 1 of the main body 15.
7 is movably supported on the lower surface side, and is provided with a substantially forward moving force by an urging spring (not shown). When the catcher 16 is moved substantially rearward against the urging force of the urging spring, the holding projection 16c is moved slightly to the right.

The main body 15 is supported by the housing 2 so as to be movable in the front-rear direction while being supported between the side portions 4 and 4 of the housing 2 while supporting the catcher 16.

A base chassis 19 is rotatably supported on the side surfaces 4, 4 of the housing 2 with its rear end as a fulcrum.

At the rear ends of the left and right sides of the base chassis 19, supported pins 19a, 1
9a is formed, and the supported pins 19a, 19a are rotatably supported by the rear ends of the side surfaces 4, 4. And
Sliding shafts 19b protruding outward are provided at substantially central portions of the left and right sides of the base chassis 19 in the front-rear direction.
19b are formed.

A cut-and-raised engagement piece 19c is formed at the front edge of the base chassis 19, and the engagement piece 19c is engaged with an engagement recess 13a of the outer lid 13 supported by the front surface portion 5. ing. A positioning pin 19d protrudes from the base chassis 19 at a position near the front end and near the right end. An arrangement hole 19e is formed in the base chassis 19 from substantially the center to the right.

A spindle motor 20 is attached to the center of the base chassis 19, and a disk table 20a in which a magnet (not shown) is embedded is fixed to the upper end of the motor shaft of the spindle motor 20. Then, the spindle motor 20 has the motor shaft
The disk table 20 a is projected above the base chassis 19 from the base chassis 19.

An optical pickup 21 is supported on the lower surface of the base chassis 19 so as to be movable in the left-right direction.
Then, the biaxial actuator 22 of the optical pickup 21 is moved in the left-right direction at a position corresponding to the arrangement hole 19e.

A mounting member 23 is attached to the rear end of the optical pickup 21. The mounting member 23 has a U-shape which is opened forward when viewed in a longitudinal sectional shape. The rear end of the support member 24 is attached.

The head support member 24 has a leaf spring shape that is long in the front-rear direction, and a magnetic head 24a is provided at the front end. The magnetic head 24a is located right above the objective lens 22b of the biaxial actuator 22. Further, the magnetic head 24a is moved substantially vertically by a lifting mechanism (not shown).

When the optical pickup 21 is moved in the left-right direction, the head support member 24 is moved together with the mounting member 23 in the left-right direction.

A slider 25 is slidably supported on the outer surface of the housing 2 in the front-rear direction.

The slider 25 has a horizontally long base 26 and support portions 27, 2 projecting downward from both left and right ends of the base 26.
7 and a projection 28 projecting rearward from the base 26 are integrally formed.

A spring hook 26a is formed in the center of the front edge of the base 26 in the left-right direction. On the right side of the spring hook 26a at the front edge of the base 26, a stopper projection 26b is formed that projects forward.

The cam holes 2 are provided in the support portions 27, 27, respectively.
9 and 29 are formed. The cam holes 29, 29 are formed by a horizontal short reference portion 29a, an inclined portion 29b extending obliquely upward and forward from the front end of the reference portion 29a, and a horizontal portion 29c extending horizontally and forward from the front end of the inclined portion 29b. Have been.

A sliding groove 30 opened downward from the projecting portion 28 to the rear edge of the base 26 is formed. And
The sliding groove 30 is composed of an arc-shaped portion 30a formed in the protruding portion 28 and a linear portion 30b formed in the base portion 26 extending in the left-right direction, and both ends are closed.

The slider 25 has cam holes 29, 29 in which sliding shafts 19 b, 19 b of the base chassis 19 are slidably engaged, respectively, and a base 26 and a protruding portion 28 are provided on the upper surface of the top plate 3 of the housing 2. Side portions 27, 27
Is located on the outer side of the side portions 4 and 4 of the housing 2,
It is slidably supported in the front-rear direction on the outer surface side of the housing 2.

When the slider 25 is supported on the outer surface of the housing 2, the tension coil spring 3 is placed between the spring hook 26 a of the base 26 and the spring hook 12 b of the lid 12.
1 and the extension coil spring 31 is attached to the lid 12 as shown in FIG.
6 serves as an urging means for applying a rotational force in the R1 direction shown in FIG.

When the slider 25 is supported by the housing 2, the loading gear 1 is inserted into the sliding groove 30.
The zero operation projection 10a is slidably engaged.

The disk cartridge 100 has a flat rectangular case body 100a in which a magneto-optical disk (not shown) having a diameter of about 64 mm is rotatably housed as a recording medium, and is provided on both upper and lower sides of the case body 100a. An opening (not shown) is formed. The opening is simultaneously opened or closed by the shutter member 100b.

At the center of the lower surface of the case body 100a,
An insertion hole (not shown) is formed.
A positioning hole (not shown) is formed on the lower surface of “a”.
Further, a portion made of a magnetic metal material is provided at the center of the magneto-optical disk.

The operation of the disk recording / reproducing apparatus 1 will be described below (see FIGS. 4 to 6).

First, a state before the disk cartridge 100 is inserted will be described (see FIG. 4).

The insertion opening 5 a of the housing 2 is provided with a tension coil spring 31.
Is closed by the lid 12 which is rotated in the R1 direction by the urging force. At this time, the slider 25 has the stopper projection 26b in contact with the regulation projection 3b of the housing 2,
It is located at the front moving end. Therefore, the tension coil spring 31 is only slightly extended, its spring force is small, and the rotating force applied to the lid 12 in the R1 direction is small. Then, the lid body 12 is in a closed position where the stopper piece 12c is elastically contacted with the upper edge of the outer lid 13 from the rear to restrict the rotation in the R1 direction and closes the insertion opening 5a.

Since the slider 25 is located at the front moving end, the sliding shafts 19b, 1
9b is engaged with the rear end of the reference portion 29a of the cam hole 29 of the slider 25, respectively. Therefore,
The base chassis 19 is tilted forward and downward. Since the base chassis 19 is inclined forward and the outer lid 13 is engaged with the engagement recess 13a with the engagement piece 19c, the outer lid 13 is located at the lower moving end. At this time, the magnetic head 24a is held at the upper moving end by the lifting mechanism.

When the slider 25 is located at the front moving end, the operating projection 10a of the loading gear 10 engages with the rear end of the arc-shaped portion 30a of the sliding groove 30 formed in the slider 25. Have been. The loading gear 10 is meshed with the rear end of the rack 17a of the holder 14.

The holder 14 is located at the front moving end, and the catcher 16 is located forward by the urging force of the urging spring.

In the state shown above, the disk cartridge 100 is inserted through the insertion slot 5a (see FIG. 5). The disc cartridge 100 presses the lid 12 backward, whereby the lid 12 is rotated in the R2 direction to open the insertion slot 5a, and the disc cartridge 100 is moved into the housing 2 through the insertion slot 5a. To go.

The disk cartridge 100 is inserted into the insertion slot 5a.
When the disk cartridge 100 is inserted, the pressed portion 16b of the catcher 16 is pressed backward by the disk cartridge 100, and the holding protrusion 16c is moved slightly to the right. When the holding projection 16c is slightly moved rightward, the holding projection 16c is moved to the case 1 of the disc cartridge 100.
00a, the disc cartridge 100 is engaged with the catcher 1 (not shown).
6 is held.

When the disc cartridge 100 presses the pressed portion 16b of the catcher 16 and the catcher 16 is moved substantially rearward, an operation switch (not shown) is operated by a part of the catcher 16 and the drive motor 6 is driven.
Is rotated.

When the drive motor 6 is rotated, the loading gear 10 is rotated clockwise as viewed in plan, sends the rack 17a backward, the holder 14 is moved backward, and the disc cartridge held by the catcher 16 is moved. 100 is automatically drawn into the housing 2. At this time, since the operation protrusion 10a of the loading gear 10 is moved within the circular arc portion 30a of the sliding groove 30 formed in the slider 25, the slider 25 is not moved even if the loading gear 10 is rotated.

When the disk cartridge 100 is pulled into the housing 2, the lid 12 urged in the R 1 direction by the extension coil spring 31 is moved to the case 100.
As described above, since the slider 25 is located at the front moving end, the urging force of the tension coil spring 31 is small, and the urging force of the tension coil spring 31 is reduced when the disc cartridge 100 is inserted. There is almost no resistance to insertion from the mouth 5a.

When the holder 14 is moved to the rear moving end, the engagement between the loading gear 10 and the rack 17a is released, and the movement of the holder 14 is stopped. Then, the disk cartridge 100 reaches a mounting position where recording and reproduction with respect to the magneto-optical disk are possible while being held by the catcher 16 (see FIG. 5). When the disk cartridge 100 is drawn into the housing 2, the shutter member 100b is slid in the opening direction by a shutter opening / closing mechanism (not shown), and the two openings formed on the upper and lower surfaces of the case body 100a are opened. .

The movement of the holder 14 is stopped, but the drive motor 6 is continuously rotated. The loading gear 10 is continuously rotated by the rotation of the drive motor 6, and the operation protrusion 10 a is engaged with the linear portion 30 b of the slide groove 30.

When the loading gear 10 is rotated with the operating projection 10a engaged with the linear section 30b, the wall forming the linear section 30b is pressed by the operating projection 10a, and the slider 25 is moved backward. To go. When the slider 25 is moved backward, the base chassis 1
The 9 sliding shafts 19b, 19b are relatively moved forward in the cam holes 29, 29, and reach the horizontal portions 29c, 29c from the inclined portions 29b, 29b. Also, at this time, the pulling projection 10b of the loading gear 10 passes through the operated groove 17b of the holder 14 and is located on the rear side of the operated groove 17b.

As the sliding shafts 19b, 19b are relatively moved forward, the base chassis 19 is rotated such that the front end moves upward, and the disk table 2 is moved.
A part of Oa is inserted into the case body 100a through the insertion hole of the disk cartridge 100, and when the base chassis 19 is in a horizontal state, the magneto-optical disk is attached to the disk table 20a by being attracted thereto. At this time, the positioning pins 19d of the base chassis 19 are inserted into positioning holes formed in the case body 100a, whereby the disc cartridge 100 is positioned with respect to the base chassis 19. When the magneto-optical disk is mounted on the disk table 20a, the magneto-optical disk is placed inside the case body 100a.
0a.

When the base chassis 19 is rotated, the outer lid 13 is moved upward with this rotation, and the insertion opening 5a is closed by the outer lid 13.

When the slider 25 is moved rearward, the extension coil spring 31 is extended, and at the same time, the turning force applied to the lid 12 in the R1 direction gradually increases. Then, when the slider 25 is located at the rear moving end, the tension coil spring 31 moves the lid 12
The rotational power in the R1 direction applied to the motor becomes maximum.
Therefore, the disk cartridge 100 is pressed against the base chassis 19 by the lid 12 and is stably held at the mounting position.

When the slider 25 is moved rearward, the reproducing switch 11a or the reproducing switch 11 provided on the circuit board 11 by the tip of the projection 28.
a and the recording switch 11b are both operated.

When the user operates a reproducing button (not shown) for reproducing an information signal from the magneto-optical disk, if the reproducing switch 11a is operated when the slider 25 is moved backward, the reproducing operation is performed. When the sliding shafts 19b, 19b of the base chassis 19 are located at the rear ends of the horizontal portions 29c, 29c of the cam holes 29, 29, the rotation of the drive motor 6 is stopped and the slider 25 is moved rearward. Is stopped.

On the other hand, when the user operates a recording button (not shown) for the purpose of recording an information signal on the magneto-optical disk, even if the reproduction switch 11a is operated when the slider 25 is moved backward, the slider is moved. The rearward movement of the slider 25 is not stopped, and the slider 25 is moved rearward until the recording switch 11b is operated by the protrusion 28. When the recording switch 11b is operated, it is determined that the operation is a recording operation, and the sliding shafts 19b, 19b of the base chassis 19 are moved to the horizontal portions 29c of the cam holes 29, 29,
At the position located at the front end of 29c, the rotation of the drive motor 6 is stopped, and the backward movement of the slider 25 is stopped.

When a recording operation is performed, the magnetic head 24a held on the upper side is lowered by the elevating mechanism, and the magnetic head 24a passes through the upper opening of the case body 100a of the disk cartridge 100 to emit light. It is in elastic contact with the upper surface of the magnetic disk.

For reproducing information signals from the magneto-optical disk, the magneto-optical disk mounted on the disk table 20a is rotated with the rotation of the spindle motor 20,
This is performed by irradiating the magneto-optical disk with laser light via the objective lens 22a of the biaxial actuator 22.

On the other hand, information signals are recorded on the magneto-optical disk by rotating the magneto-optical disk mounted on the disk table 20 a with the rotation of the spindle motor 20, and by rotating the laser beam via the objective lens 22 a of the two-axis actuator 22. Is irradiated on the magneto-optical disk and a magnetic field is applied to the magneto-optical disk from the side opposite to the side irradiated with the laser beam via the magnetic head 24a.

The ejection of the disk cartridge 100 after the completion of the reproducing operation or the recording operation is performed as follows.

When the reproducing operation or the recording operation is completed and the user operates an eject button (not shown), the driving motor 6
Is rotated in the opposite direction. The rotation of the driving motor 6 rotates the loading gear 10 in a counterclockwise direction when viewed in a plane, and
The slider 25 is moved forward until the stopper projection 26b comes into contact with the regulation projection 3b of the housing 2 by moving the slider 0a in the linear portion 30b of the sliding groove 30.

At this time, as the slider 25 moves forward, the urging force of the tension coil spring 31 decreases, and the pressing force of the lid 12 on the disk cartridge 100 gradually decreases.

By moving the slider 25 forward,
The sliding shafts 19b of the base chassis 19 are
9 and 29, the base chassis 19 is rotated so that the front end moves downward.
The mounted state of the magneto-optical disk on the disk table 20a is released. When the sliding shafts 19b reach the rear ends of the reference portions 29a of the cam holes 29, the rotation of the base chassis 19 is stopped.

With the rotation of the base chassis 19, the outer lid 1
3 is moved downward, and the insertion port 5a is opened.

Subsequently, the drive motor 6 is rotated, and the pulling protruding portion 10b of the loading gear 10 is inserted into the acting groove 17b of the holder 14 to move the wall forming the acting groove 17b forward. Press. By this pressing, the holder 14 is slightly moved forward, and the rack portion 17 is moved.
a is engaged with the loading gear 10. Then, the drawing protrusion 10b passes through the acting groove 17b forward.

The holder 14 is moved forward by the engagement of the loading gear 10 and the rack 17a, whereby the disk cartridge 100 is moved forward and discharged from the insertion slot 5a.

The disk cartridge 100 is inserted into the insertion slot 5a.
When the disk cartridge 100 is ejected from the disc cartridge 100, the urging force of the tension coil spring 31 with respect to the lid 12 is reduced.

The disk cartridge 100 is inserted into the insertion slot 5a.
The shutter member 100b is slid in the closing direction by the shutter opening and closing mechanism, and the two openings of the case body 100a are closed.

The working projection 10a of the loading gear 10 is moved in the arcuate portion 30a of the sliding groove 30, and
0a reaches the rear end of the arcuate portion 30a, the rotation of the drive motor 6 is stopped, and the disc cartridge 100
Is discharged from the insertion port 5a by a predetermined amount. Then, by pulling out the ejected disk cartridge 100, the disk cartridge 100 can be taken out. When the disk cartridge 100 is taken out, the lid 12 is turned by the small urging force of the tension coil spring 31.
The insertion piece 5 a is rotated in one direction, the stopper piece 12 c elastically contacts the upper edge of the outer lid 13, and the insertion port 5 a is closed by the lid 12.

As described above, in the disk recording / reproducing apparatus 1, the disk cartridge 100 is pressed against the base chassis 19 by the lid 12 to hold the disk cartridge 100 at the mounting position. There is no need to provide a metal leaf spring to hold the disk cartridge 100.

Therefore, a stable holding state at the mounting position of the disk cartridge 100 can be ensured without using an expensive metal leaf spring, so that the manufacturing cost of the disk recording / reproducing apparatus 1 can be reduced. it can.

Further, the holding force of the disk cartridge 100 by the lid 12 is moved by the slider 25, which is one of the components conventionally required, so that the tension coil spring 31 is moved.
Therefore, there is no need for a mechanism or a member for generating a biasing force on the tension coil spring 31, so that the mechanism is simple and the manufacturing cost of the disk recording / reproducing apparatus 1 is further reduced.

Further, in the disc recording / reproducing apparatus 1, the movement of the slider 25 is started when the disc cartridge 100 inserted from the insertion slot 5a reaches the mounting position.
When the disc cartridge 100 is inserted into the casing 2 and when the disc cartridge 100 is ejected from the casing 2, only a small urging force is applied to the disc cartridge 100 from the tension coil spring 31.
Insertion and ejection of 0 can be properly performed by a light operating force.

Further, the disk cartridge 100
The tension coil spring 31 stretched between the lid 12 and the slider 25 is used as a biasing means for pressing the disc recording / reproducing apparatus 1 against the base chassis 19, and the manufacturing cost of the disk recording / reproducing apparatus 1 is greatly increased. Can be reduced.

In addition, when the disk cartridge 100 is pressed against the base chassis 19 by the lid 12, the outer lid 13 inserts the insertion slot 5a.
Is closed, so that intrusion of dust from the insertion port 5a can be reliably prevented.

Incidentally, the disk cartridge 100 is
2, the insertion opening 5a is substantially closed by the lid 12 and a part of the disc cartridge 100 (see FIGS. 5 and 6). Even when 13 is not provided, intrusion of dust from the insertion port 5a can be prevented.

The case where the spring force of the tension coil spring 31 is increased with the movement of the slider 25 has been described above. For example, the holder 14 and the lid 12 which are the transport means for transporting the disk cartridge 100 are provided. The tension coil spring 31 may be stretched between them, so that the spring force of the tension coil spring 31 increases as the holder 14 moves.

If the holder 14 is used as described above, the holding force of the disk cartridge 100 by the lid 12 is applied from the extension coil spring 31 by the movement of the holder 14 which is one of the conventionally required components. A mechanism or a member for generating a biasing force on the tension coil spring 31 is not required, so that the mechanism is simple and the manufacturing cost of the disk recording / reproducing apparatus 1 can be reduced.

In the above description, a case where a disk cartridge having a magneto-optical disk is used as the cartridge has been described. For example, the cartridge may be a tape cartridge formed by winding a magnetic tape in a case.

It should be noted that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment for carrying out the present invention, and the present invention is not limited thereto. Should not be construed as limiting the technical scope of the present invention.

[0089]

As is evident from the above description, the cartridge holding mechanism of the present invention is provided with a cartridge in which a recording medium is accommodated in a case, and a mounting position at which information signals can be reproduced or recorded on the recording medium. A lid that opens and closes an insertion slot into which the cartridge is inserted, and is pressed toward the cartridge inserted from the insertion slot and is operated toward an open position to open the insertion slot; and A base chassis in which the cartridge inserted from the opening is disposed at the mounting position, and an urging means for applying an urging force in a direction of pressing the cartridge inserted from the insertion opening to the base chassis on the lid body. Features.

Therefore, a stable holding state at the mounting position of the cartridge can be ensured without using a separately expensive metal leaf spring, so that the manufacturing cost of the cartridge holding mechanism can be reduced.

According to the second aspect of the present invention, a disk-shaped recording medium mounted on a disk table and reproducing at least an information signal by driving an optical pickup is used as the recording medium, and the disk is mounted on a base chassis. A table and an optical pickup are provided, and a slider for moving in a predetermined direction to move the base chassis toward and away from the cartridge is provided, and the slider is moved in a direction to move the base chassis to contact the cartridge. Since the urging means applies the urging force to the lid, the holding force of the cartridge by the lid is applied by moving the slider, which is one of the conventionally required parts. It does not require a mechanism or a member to generate a biasing force. Further contributes to a reduction in the manufacturing cost of the cartridge holding mechanism.

According to the third aspect of the present invention, there is provided conveying means for holding and moving the disk table inserted from the insertion slot and conveying the disk table toward the mounting position, and moving the conveying means. The urging means applies an urging force to the lid from the urging means, so that the holding force of the cartridge by the lid is applied by the movement of the conveying means, which is one of the conventionally required parts. No need for a mechanism or member to generate a biasing force on the biasing means,
The mechanism is simple and further contributes to a reduction in the manufacturing cost of the cartridge holding mechanism.

According to the fourth aspect of the present invention, the movement of the slider is started when the cartridge inserted from the insertion slot reaches the mounting position, so that the cartridge is inserted when the cartridge is inserted from the insertion slot. Thus, a large pressing force is not applied from the urging means via the lid, and the cartridge can be properly inserted from the insertion port by a light operating force.

According to the fifth aspect of the present invention, since a tension coil spring stretched between the lid and the slider is used as the urging means, the mechanism is simple and the cartridge holding mechanism can be manufactured. The cost can be significantly reduced.

In the invention described in claim 6, since the tension coil spring stretched between the lid and the transporting means is used as the urging means, the mechanism is simple and the cartridge holding mechanism can be used. Manufacturing costs can be significantly reduced.

According to the seventh aspect of the present invention, since the outer lid for closing the insertion slot is provided when the cartridge is placed on the base chassis at the mounting position, the intrusion of dust from the insertion slot is ensured. Can be prevented.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a cartridge holding mechanism of the present invention together with FIG. 2 to FIG. 6, which is a schematic exploded perspective view of a disk recording / reproducing apparatus to which the present invention is applied.

FIG. 2 is a schematic plan view of a disk recording / reproducing apparatus.

FIG. 3 is a schematic front view of the disk recording / reproducing apparatus.

4 shows the operation of the disk recording / reproducing apparatus together with FIGS. 5 and 6, and FIG. 4 is a schematic side view showing a state in which a disk cartridge is not inserted, with a partial cross section.

FIG. 5 is a schematic side view partially showing a state in which a disk cartridge inserted from an insertion slot is not mounted on a disk table;

FIG. 6 is a schematic side view partially showing a cross section of a state where a disk cartridge inserted from an insertion slot is mounted on a disk table.

[Explanation of symbols]

5a insertion slot, 12 lid, 13 outer cover, 14 holder (transporting means), 19 base chassis, 20 disk table, 21 optical pickup, 25 slider, 31 tension coil spring (biasing means) ), 100: disk cartridge (cartridge), 100a: case body

Claims (7)

[Claims] 1. A cartridge holding mechanism for holding a cartridge, in which a recording medium is housed in a case body, at a mounting position where reproduction or recording of an information signal with respect to the recording medium is possible, wherein an insertion slot into which the cartridge is inserted is provided. A lid that opens and closes and is pressed toward a cartridge inserted from the insertion opening to operate toward an open position that opens the insertion opening; a base chassis in which the cartridge inserted from the insertion opening is arranged at a mounting position; A cartridge holding mechanism comprising: urging means for applying a urging force in a direction in which the cartridge inserted into the lid from the insertion opening is pressed against the base chassis. 2. A disk-shaped recording medium which is mounted on a disk table and at least reproduces an information signal by driving an optical pickup as the recording medium, and a disk table and an optical pickup are provided on a base chassis, and a predetermined direction is provided. The slider that moves the base chassis in the direction to move away from the cartridge and moves the base chassis in the direction to contact the cartridge is applied. The cartridge holding mechanism according to claim 1, wherein 3. A transfer means for holding and moving the disk table inserted from the insertion slot and transferring the disk table toward the mounting position, wherein the urging means applies a biasing force from the biasing means to the lid by the movement of the transport means. The cartridge holding mechanism according to claim 1, wherein the cartridge holding mechanism is provided. 4. The cartridge holding mechanism according to claim 2, wherein the movement of the slider is started when the cartridge inserted from the insertion port reaches the mounting position. 5. The cartridge holding mechanism according to claim 2, wherein a tension coil spring stretched between the lid and the slider is used as the urging means. 6. The cartridge holding mechanism according to claim 3, wherein a tension coil spring stretched between the lid and the transporting means is used as the urging means. 7. The cartridge holding mechanism according to claim 1, further comprising an outer lid for closing an insertion slot when the cartridge is placed on the base chassis at the mounting position.