JP2903117B2 - Opening / closing mechanism for cartridges - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an opening / closing mechanism for an insertion port of a cartridge or the like in a recording apparatus which receives a cartridge or a cassette containing an information recording medium and performs recording and reproduction on the recording medium.

[0002]

2. Description of the Related Art Cartridges and cassettes containing information recording media such as optical disks, magnetic disks, and magnetic tapes are mounted on optical disk drive devices, magnetic disk recording / reproducing devices, VTRs, etc. to record, reproduce, and erase information. Etc. Each recording / reproducing apparatus has an opening for receiving a cassette or the like inside the apparatus, and a door for preventing intrusion of dust is provided in the opening so as to be freely opened and closed. Japanese Utility Model Laid-Open Publication No. 1-220172 discloses a structure in which two doors pivotally supported by each other are opened and closed by a mechanism comprising a combination of a solenoid and a gear. Because dust invades from eyes,
Device failures and recording / reproducing errors due to dust were apt to occur.

FIGS. 8 (a) and 8 (b) are schematic views showing the structure of another conventional example. FIG. 8 (a) shows one door 3 pivotally connected to an opening 2 provided on the front surface of a housing 1. FIG. When the cartridge 4 is loaded from the opening 2, the cartridge does not move up and down, and the spindle motor advances and retreats toward the cartridge. In this type, when the mounting of the cartridge 4 is completed, the door 3 is opened halfway, so that dust easily enters. On the other hand, if the door 3 is configured to be able to be closed as shown in (b), not only does it become necessary to increase the space in the depth direction of the drive, but also it is necessary to open the door unless some door opening / closing means is provided at the time of ejection. Cannot be performed, which leads to an increase in cost due to an increase in the number of parts.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording / reproducing apparatus for an information recording medium, which is provided with a door for preventing dust from entering through an opening for mounting and dismounting a cartridge. The purpose of the present invention is to provide an opening / closing mechanism for a cartridge or other insertion port which does not require a power mechanism for opening the door, thereby reducing costs and miniaturization, and by eliminating the need for a door opening / closing space. And

[0005]

In order to achieve the above object, the present invention provides an insertion slot for inserting and removing a cartridge containing an information recording medium into and from a drive; a door for opening and closing the insertion slot; In a recording / reproducing apparatus provided with an opening / closing mechanism for opening / closing a door, the opening / closing mechanism is configured so that the inner and outer two door pieces pivotally supported by the insertion opening by a rotating shaft and the two door pieces approach each other. A second spring that biases the first spring and a first spring that constantly biases at least one of the two door pieces outwardly, when the cartridge is not inserted.
The first spring has an end of the second door piece
To the end, and when the cartridge is inserted, the second
The spring biases the end of the first door piece toward the end of the insertion slot.
It, said inner and outer doors pieces that are pivotally supported on the lower edge of the insertion opening, the distal end of the inner and outer doors pieces out outside door piece is substantially horizontally protruded to the outside from the insertion opening That a notch for accommodating the spring is provided in a part of the inner and outer door pieces and the insertion opening, and a guide projection is provided in a proper position of the inner door piece or the outer door piece, and the cartridge is provided. A guide when inserting and removing, when each of the door pieces closes the insertion slot, the front end of each door piece and the edge of the insertion slot are engaged with each other in an uneven manner or in a stepwise manner. In this case, it is notified that an elastic member is disposed on one of the contact portions between the respective door pieces and the insertion opening, and that the cartridge is inserted into one surface of the outer door piece. That at least a part of each of the above door pieces It is characterized in that it has a transparent portion which does not transmit the wavelength of the laser beam.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described in detail. FIG. 1 is an exploded perspective view showing a configuration in which the opening / closing mechanism of the present invention is applied to a cartridge insertion slot of an optical disk drive device, and a cartridge insertion slot 11 provided on a front surface of a shell 10 containing a servo unit such as an optical pickup is provided. A door 14 composed of two inner and outer door pieces 12 and 13 is pivotally supported so as to be openable and closable, and this door 14 constitutes an opening and closing mechanism 15 together with other peripheral parts. First door piece (outer door piece) 12 and second door piece (inner door piece) 13
Are rotatably fastened to each other and are pivotally supported by the insertion opening 11. In the assembling, each of the sides 12a, 12a, 12a,
After the shaft holes 12b, 13b and the shaft hole 11a on the shell side provided in the respective holes 13a are kept in communication with each other, the shaft (rotary shaft) 16 is inserted into each shaft hole, and the shaft is rotated by a fastener such as a washer 17 or the like. By fixing both ends to prevent falling off, they are rotatably connected to each other.

The shaft 16 has a torsion spring 1
8 and 19, the first torsion spring 18 has one end locked by a notch 11b provided at the lower edge of the insertion port 11 and the other end connected to the second door piece 13. The second door piece 13 is urged in the outward direction indicated by the arrow A by being locked by the notch 20 provided in the concave side 13a. The second torsion spring 19 has one end locked by a notch 21 provided on the concave side 13a of the second door piece 13 and the other end provided on the wall surface of the first door piece 12 (not shown). The first door piece 1 is locked by a notch or the like.
2 is constantly biased in the direction B approaching the second door piece 13. However, the stopper protrusion 2 as shown in FIGS.
Since 2 is projected from the base of the first door piece 12, the angle between the second door piece 13 and the second door piece 13 cannot be reduced to 90 degrees or less. Reference numeral 23 denotes an exterior body for covering the shell and the opening / closing mechanism after the opening / closing mechanism 15 has been assembled, and an opening 23a corresponding to the insertion slot 11 is formed on the front surface of the exterior body. .

In the above description, the first torsion spring 18 urges the second door piece 13 to the outside, but instead of the second door piece 13, the first door piece 12 moves to the outside. In other words, the first or second door piece 12, 13 may be biased by the first torsion spring 18.
If any one of them is elastically urged outward, the same function and effect can be exerted.

Next, the operation of the opening / closing mechanism having the above configuration will be described. First, FIGS. 2 (a), 2 (b) and 3 (c) are cross-sectional views showing the operation at the time of mounting the cartridge, and each figure shows a partially enlarged view. Cartridge 2 from opening 23a
In a state before the insertion of the insertion door 5, the second door piece 13 is urged in the opening direction by the torsion spring 18, and the tip of the second door piece 13 is engaged with the locking projection 26 provided on the upper edge of the insertion slot 11. Therefore, it is configured not to be able to rotate in the opening direction beyond the illustrated vertical posture. At this time, although the first door piece 12 is urged by the second torsion spring 19 in the direction approaching the second door piece, the stopper projection 2
By the operation of 2, the angle of 90 degrees with the second door piece is maintained.

In this state, when the cartridge 25 is inserted as shown in (a) to (b), the cartridge 25 pushes the second door piece 13 into the inside against the torsion spring 18. At this time, the first door piece 12 is kept pressed by the lower surface of the cartridge, so that both door pieces are approximately 1
At an interval of 80 degrees, the cartridge is smoothly inserted inside while being guided by both door pieces. Cartridge 2
5 passes through the insertion slot 11, the first door piece 1
2 rotates in the closing direction by the force of the torsion spring 19 and closes the insertion port 11 until it comes into contact with the tip of the shell 10. When a cartridge is stored in the drive as described above, a predetermined display, for example, "DISK IN" is attached to the first door piece 12, thereby preventing the user from erroneously inserting the cartridge twice. .

When the first torsion spring 18 is used to urge the first door piece 12 to the outside as described above, the two door pieces are always approached by the second torsion spring 19. Is biased in the direction
The operation can be performed in the order of FIGS. 2 (a), 2 (b) and 3 (c). In order to realize such an operation, the second
It will be necessary to set the tensile force by the torsion spring 19 to be stronger than the pressing force to the outside by the first torsion spring 18 by a predetermined amount or more. If the opening force of the first torsion spring 18 is too strong, the insertion opening 11 cannot be kept closed by the first door piece 12 as shown in FIG. In this case, the expanding force of the first torsion spring 19 is sufficient to position the door pieces 12 and 13 outward when no force is applied from the cartridge as shown in FIG. Help.

A projection 28 provided on the second door piece 13
Can be used as guide protrusions of the cartridge, so that other portions of the door piece can be prevented from being scratched by rubbing, and the slipperiness when the cartridge is inserted can be improved. Further, a similar projection may be provided on the first door piece to exhibit the same effect. According to the opening / closing mechanism of this embodiment, a complete dust-proof structure can be realized without increasing the depth of the drive device and without using a drive source or a link mechanism such as a motor and a solenoid for opening and closing the door. Thus, downsizing and low cost can be achieved. Both the torsion springs 18 and 19 have their spring ends fitted into the notches at the edges of the door pieces or the insertion openings, so that no gap is formed due to the presence of the spring, and dust is not generated. Intrusion can be prevented. 2 (a), 2 (b) and 3 (c), one end of the torsion spring 18 is shown not to be locked in the notch 11b for easy understanding. Is locked.

FIGS. 4 (a), 4 (b) and 5 (c) are views for explaining the operation when the cartridge in the mounted state is taken out. Each drawing is partially enlarged. I have. Fig. 4 (a)
In the mounting state shown in FIG.
Holds the two door pieces 12 and 13 at an interval of 90 degrees. However, when the cartridge 25 moves in the discharge direction, the projection 28 of the second door piece 13 is pressed by the lower surface of the cartridge. While the door piece 13 maintains the illustrated posture, the first door piece 12 is pushed in the opening direction, and in the discharging process shown in FIG.
13 has a positional relationship of about 180 degrees. When the ejection is completed, the second door 13 is inserted into the insertion port 11 as shown in FIG.
Is closed. Note that, even when the configuration in which the first door piece 12 is urged outward by the first torsion spring 18 as described above, both door pieces are always moved in the direction of being always approached by the second torsion spring 19. Since it is energized, it can operate in the order of FIGS. 4 (a), (b) and 5 (c).

FIG. 6 is a view showing a guide function of the first door piece when the cartridge is inserted. Since the center of rotation of the door 14 is provided on the lower side, the door is received when the cartridge is inserted. As a guide, insertion becomes easy. In particular, the opening 23a or the insertion port 11 is
3, the first door piece 12 projects horizontally forward from the opening 23a as shown in the figure. When the cartridge is inserted, the leading end of the cartridge abuts on the projecting door piece. Therefore, it is sufficient to insert along this, and the insertion work is further facilitated.

FIGS. 7A and 7B respectively show D in FIG. 4A.
FIG. 7A is an enlarged view of a portion C of FIG. 3C, and FIG.
The sealing effect (dust-proof effect) is enhanced by arranging an elastic member 30 such as rubber which comes into contact with the rubber. FIG. 7B shows the second door piece 1.
3 shows an example in which an elastic member 31 that engages with the locking projection 26 is arranged at the tip of the third member 3 to enhance the sealing effect. Since the engagement between the door piece and the shell is in the state of engagement between the concave and the convex, it has a structure that can originally exhibit the dustproof effect. However, the effect is ensured by disposing the elastic member. It can be. Note that a stepwise engagement state may be adopted.

Next, the present invention may be modified as follows. That is, part or all of the door 14 that is closed when the cartridge is inserted is made of a material that blocks only a wavelength substantially equal to the laser wavelength and transmits other light. Specifically, by blending a natural color or a blue or gray pigment different from a transparent plastic material such as PC or ABS laser light color (almost red) to such an extent that the transparency is not impaired, While having the function of cutting off the cartridges, the presence or absence of the cartridge inside the drive can be visually recognized.

[0017]

As described above, according to the present invention, the first and second door pieces are pivotally supported by one side so as to be openable and closable.
Since the inner second door piece is urged outward with respect to the insertion opening, and further the first door piece is urged in a direction approaching the second door piece, before the cartridge is inserted, Second
The door piece closes the insertion slot, and during the insertion process, both door pieces spread at an interval of 180 degrees to guide the cartridge, and before the mounting is completed, the first door piece closes the insertion slot. The door opens and closes in conjunction with the in / out operation, so that no special motor or drive source such as a solenoid or a link mechanism is required at all, and a reduction in size and cost can be achieved. When the cartridge is not inserted, the first
(C) urges the end of the second door piece toward the end of the insertion slot,
When the cartridge is inserted, the second spring is driven by the first door piece.
Of the insertion slot against the end of the insertion slot.
Press the end of the second door against the end of the
Touch the end of the first door when inserting the cartridge.
It can be pressed against the end of the insertion slot,
Make sure that the insertion slot is airtight both when not inserting and when inserting.
Can be closed. Since the door is pivotally supported in the front-rear direction by the lower side of the insertion opening, one of the doors serves as a receiving guide at the time of insertion, thereby facilitating insertion of the cartridge. Further, since one end of the door protrudes from the drive bezel, the insertion operability can be further improved.

A projection is provided on a part of the door piece which contacts the lower surface of the cartridge and serves as a guide when the cartridge is inserted and removed, and the lower surface of the cartridge is guided by the projection. Insertion becomes smooth.

When the first door piece and the second door piece constituting the door abut against the upper edge of the insertion opening of the shell and close the insertion opening, the upper end of each door piece, Since the upper edge portion of the insertion opening is engaged with the concave and convex portions, there is no gap between the contact portions, and the sealing effect can be enhanced. Further, by arranging a packing made of an elastic member at the corresponding contact portion, the dustproof effect can be further enhanced. Since the indication that the cartridge is inserted is attached to the surface of the first door piece that closes the insertion slot when the cartridge is mounted, it is possible to prevent the user from erroneously inserting the cartridge twice. .
Further, by making a part or the whole of the door transparent or translucent, the presence or absence of the mounting of the cartridge can be visually recognized, so that double insertion can be prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the configuration of an embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views illustrating an operation when a cartridge is mounted.

FIG. 3 (c) is a sectional view showing the mounting operation of the cartridge following FIGS. 2 (a) and 2 (b).

FIGS. 4A and 4B are cross-sectional views illustrating an operation at the time of discharging a cartridge.

FIG. 5C is a cross-sectional view showing the operation at the time of ejection of the cartridge following FIG. 4;

FIG. 6 is a diagram for explaining the effect of the present invention.

FIGS. 7A and 7B are explanatory diagrams of a main part configuration.

FIGS. 8A and 8B are explanatory diagrams of a conventional example.

[Explanation of symbols]

10 shell, 11 cartridge slot, 12, 13
Door piece, 12a protruding side, 13a concave side, 14 door,
15 opening / closing mechanism, 16 shaft, 18, 19 torsion spring, 20 notch, 22 stopper projection, 23 exterior body, 25 cartridge, 26 locking projection, 28 door,

Claims (10)

(57) [Claims] 1. A recording / reproducing apparatus comprising: an insertion slot for inserting and removing a cartridge containing an information recording medium into and from a drive; a door for opening and closing the insertion slot; and an opening and closing mechanism for opening and closing the door. in, the opening and closing mechanism, said insertion opening in the pivoted inner and outer doors pieces by rotating shaft, and a second spring for urging in a direction to approach the both said door pieces to each other,
A first spring for constantly urging at least one of the two door pieces outwardly, and a mechanism for opening and closing an insertion port of a cartridge or the like. 2. When the cartridge is not inserted, the first
Spring biases the end of the insertion slot at the end of the second door piece
When the cartridge is inserted, the second spring
2. The opening / closing mechanism for an insertion port of a cartridge or the like according to claim 1 , wherein a portion of the door piece is urged toward an end of the insertion port. 3. The inner and outer two door pieces are provided in the insertion slot.
3. An opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1, wherein the opening / closing mechanism is pivotally supported by a lower edge . 4. An outer door piece of said inner and outer two door pieces.
The tip has been projected almost horizontally out of the insertion slot.
Insertion opening of the opening and closing mechanism such as a cartridge of claims 1, 2 or 3, wherein the door. 5. The front and rear door pieces and a part of an insertion opening are provided in front of the door piece.
A notch for storing the spring.
An opening / closing mechanism for an insertion port of a cartridge or the like according to any one of claims 1 to 4 . 6. An apparatus according to claim 1, wherein said inner door piece or said outer door piece is suitable.
Provide a guide projection at the place and insert and remove the cartridge
6. A guide according to claim 1, wherein said guide is used as a guide.
2. An opening / closing mechanism for an insertion port of a cartridge or the like according to claim 1 . 7. When each of said door pieces closes said insertion opening.
In this case, the front end of each door piece and the edge of the insertion slot fit unevenly.
Or in a stepped manner
An opening / closing mechanism for an insertion port of a cartridge or the like according to any one of claims 1 to 6 . 8. A contact portion between each of said door pieces and said insertion port.
A contractor characterized by arranging an elastic member on one of them.
An opening / closing mechanism for an insertion port of a cartridge or the like according to claim 7 . 9. The cartridge on one surface of the outer door piece.
Added a display to notify that a luggage is inserted
9. An opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1, wherein: 10. At least a part of each door piece is a
A transparent part that does not transmit the wavelength of laser light.
The cartridge according to any one of claims 1 to 9,
Opening / closing mechanism for insertion port.