JPH07105673A - Opening / closing mechanism for the insertion port of cartridges, etc. - Google Patents

Abstract

(57) [Abstract] [Purpose] In a recording / reproducing apparatus for an information recording medium, a power mechanism for opening the door is unnecessary when providing a door for preventing dust from entering through an opening for attaching and detaching a cartridge. By doing so, cost reduction and downsizing were achieved, and downsizing was achieved by eliminating the need for a door opening / closing space. [Structure] Cartridge 25 containing an information recording medium Insertion port 11 for inserting / removing into / from a live door 14 Door for opening / closing the insertion port In a recording / reproducing apparatus having an opening / closing mechanism 15 for opening / closing the door, the opening / closing mechanism Are two door pieces 1 inside and outside, which are pivotally supported on the insertion opening by the same common rotary shaft.
2 and 13, a second spring 19 for urging both door pieces toward each other, and a first spring 18 for constantly urging at least one of the door pieces outward.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Cartridges, cassettes, etc., containing information recording media such as optical disks, magnetic disks, magnetic tapes, etc. are mounted in 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 openable and closable. Japanese Utility Model Laid-Open No. 1-220172 discloses a structure in which two doors pivotally supported with respect to each other are opened and closed by a mechanism including a combination of a solenoid and a gear. Since dust enters from the eyes,
Device failure and recording / reproduction error due to dust were likely to occur.

8 (a) and 8 (b) are schematic views showing the structure of another conventional example, and FIG. 8 (a) is a view showing an opening 2 provided on the front surface of a housing 1 in which one door 3 is pivoted. It has a structure in which the spindle motor advances and retreats toward the cartridge without vertically moving when the cartridge 4 is loaded from the opening 2. Then, in this type, when the cartridge 4 is completely attached, the door 3 is half-opened, so that dust easily enters. On the other hand, if the door 3 can be closed as shown in (b), not only the space in the depth direction of the drive needs to be increased, but also the door should be opened unless some door opening / closing means is provided at the time of discharging. Therefore, the cost is increased due to an increase in the number of parts.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and in providing an information recording medium recording / reproducing apparatus with a door for preventing dust from entering through an opening for attaching or detaching a cartridge, a door is provided. The purpose of the present invention is to provide an opening / closing mechanism for the insertion opening of a cartridge or the like, which does not require a power mechanism for opening the door, thereby achieving cost reduction and downsizing, and a door opening / closing space not required for downsizing. I am trying.

[0005]

To achieve the above object, the present invention provides an insertion opening for inserting a cartridge containing an information recording medium into and out of a drive, and a door for opening and closing the insertion opening.
In a recording / reproducing device having an opening / closing mechanism for opening / closing the door, the opening / closing mechanism includes two door pieces, an inner door and an outer door, which are pivotally supported by the insertion opening by a common common rotation shaft, and both door pieces. A second spring for urging the door pieces toward each other, and a first spring for constantly urging at least one of the door pieces outwardly. It is pivotally supported on the lower edge, the tip of the outer door piece out of the two door pieces inside and outside is projected substantially horizontally from the insertion opening to the outside, the door piece inside and outside and the insertion opening A notch for accommodating the spring in a part of the above, a guide protrusion provided in an appropriate place on the inner door piece or the outer door piece, and used as a guide for inserting / removing the cartridge. When each door piece closes the above insertion slot, Parts and insertion inlet edge and uneven fitting,
Alternatively, it is configured so as to be engaged in a stepwise manner, an elastic member is arranged at one of the contact portions of the door pieces and the insertion opening, and the cartridge is provided on one surface of the outer door piece. It is characterized in that a display for notifying that the door is inserted is provided, and that at least a part of each door piece is a transparent portion that does not transmit the wavelength of the laser light.

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. 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 opening of an optical disk drive device, and a cartridge insertion opening 11 provided on the front surface of a shell 10 incorporating a servo unit such as an optical pickup A door 14 composed of two inner and outer door pieces 12 and 13 is pivotally supported to be openable and closable, and the door 14 constitutes an opening / closing mechanism 15 together with other peripheral parts. First door piece (outer door piece) 12 and second door piece (inner door piece) 1
3 are pivotally supported by the insertion port 11 in a state of being rotatably connected to each other. In the assembling, the first door piece 12
Each side 12 in a state in which the protruding side 12a provided at one end of the second door piece 13 is fitted into the concave side 13a provided at one end of the second door piece 13.
After holding the shaft holes 12b and 13b respectively provided in a and 13a and the shaft hole 11a on the shell side in a communicating state, the shaft (rotating shaft) 16 is inserted into each shaft hole, and a fastener such as a washer 17 is used. By fixing both ends of the shaft to prevent the shaft from falling off, they are rotatably connected to each other.

A torsion spring 1 is attached to the shaft 16.
While the annular portions 8 and 19 are inserted, one end of the first torsion spring 18 is locked in the notch 11b provided in the lower edge portion of the insertion opening 11, and the other end of the first torsion spring 18 is formed in the second door piece 13. The second door piece 13 is biased 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 to 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). By being locked in the notch or the like, the first door piece 1
2 is always urged in the direction B approaching the second door piece 13. However, the stopper protrusion 2 as shown in FIGS.
Since 2 is projected on the base of the first door piece 12, the angle with the second door piece 13 cannot be reduced to 90 degrees or less. Reference numeral 23 is an exterior body for covering the shell and the opening / closing mechanism after the assembly of the opening / closing mechanism 15 is completed, and an opening 23a corresponding to the insertion port 11 is formed on the front surface of the exterior body. .

In the above description, the first torsion spring 18 is configured to bias the second door piece 13 to the outside, but instead of the second door piece 13, the first door piece 12 is moved to the outside. In other words, the first torsion spring 18 may be used to urge the first or second door pieces 12, 13 into a biasing structure.
If either one of them is elastically urged outward, the same effect can be exhibited.

Next, the operation of the opening / closing mechanism having the above structure will be described. First, FIGS. 2 (a) (b) and 3 (c) are sectional views showing the operation when the cartridge is mounted, and a partially enlarged view is shown in each drawing. The cartridge 2 from the opening 23a
In the state before inserting 5, the second door piece 13 is biased in the opening direction by the torsion spring 18, and its tip end engages with the locking projection 26 provided at the upper edge of the insertion port 11. Therefore, it is configured so that it cannot rotate in the opening direction beyond the illustrated vertical posture. At this time, although the first door piece 12 is biased by the second torsion spring 19 in the direction of approaching the second door piece, the stopper projection 2
By the action of 2, the angle of 90 degrees is maintained with the second door piece.

In this state, when the cartridge 25 is inserted as shown in (a) to (b), the cartridge 25 pushes the second door piece 13 against the torsion spring 18 into the inside. At this time, since the first door piece 12 is still pressed by the lower surface of the cartridge, both door pieces are approximately 1
The intervals are 80 degrees, and the cartridge is smoothly inserted inside while being guided by both door pieces. Cartridge 2
When the rear end of the first door piece 1 passes through the insertion opening 11,
2 is rotated in the closing direction by the force of the torsion spring 19 to close the insertion opening 11 until it abuts on the tip of the shell 10. When the cartridge is stored in the drive as described above, a predetermined indication, for example, "DISK IN" is attached to the first door piece 12 to prevent the user from accidentally inserting the cartridge twice. .

Even in the case where the first torsion spring 18 biases the first door piece 12 to the outside as described above, both door pieces are always approached by the second torsion spring 19. Because it is biased toward
The operation can be performed in the order of FIGS. 2 (a) and 2 (b) and FIG. 3 (c). In order to realize such operation, the second
It is necessary to set the pulling force by the torsion spring 19 of the above to be stronger than the pressing force of the first torsion spring 18 toward the outside by a predetermined amount or more. This is because 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. 3 (c). Further, in this case, the expanding force of the first torsion spring 19 is sufficient to position both door pieces 12, 13 outward when the force from the cartridge does not act as shown in FIG. 2 (a). Become power.

Further, the protrusion 28 provided on the second door piece 13
Since it serves as a guide protrusion of the cartridge, it is possible to prevent the other part of the door piece from being scratched by rubbing, and it is possible to enhance the slipperiness when the cartridge is inserted. Further, the same protrusion may be provided on the first door piece to exert the same effect. According to the opening / closing mechanism of this embodiment, it is possible to realize a complete dust-proof structure without increasing the depth dimension of the drive device and without using a drive source such as a motor or solenoid for opening / closing the door or a link mechanism. Therefore, downsizing and cost reduction can be achieved. Since the spring end of each of the torsion springs 18 and 19 is fitted in the notch at the edge of each door piece or the insertion opening, no gap is formed due to the presence of the spring, and dust is not generated. Intrusion can be prevented. 2 (a) (b) and FIG. 3 (c), in order to facilitate understanding, one end of the torsion spring 18 is illustrated as not being locked in the notch 11b, but Is locked.

Next, FIGS. 4 (a), 4 (b) and 5 (c) are explanatory views of the operation for taking out the cartridge in the mounted state, and a partially enlarged view is shown in each drawing. There is. Figure 4 (a)
In the mounted state shown in, the second torsion spring 19
Holds both door pieces 12, 13 at an interval of 90 degrees, but when the cartridge 25 moves in the ejecting direction, the protrusion 28 of the second door piece 13 is pressed by the lower surface of the cartridge, so While the door piece 13 maintains the illustrated posture, the first door piece 12 is pushed in the opening direction, and both door pieces 12 and 12 are pushed in the discharging process shown in FIG. 4 (b).
13 has a positional relationship of about 180 degrees. When the ejection is completed, the second door 13 opens the insertion opening 11 as shown in FIG. 5 (c).
Is closed. Even when the first torsion spring 18 biases the first door piece 12 to the outside as described above, both door pieces are always approached by the second torsion spring 19 in the direction in which they approach each other. Since it is biased, it can operate in the order of FIGS. 4 (a) (b) and 5 (c).

FIG. 6 is a view showing the guide function of the first door piece when inserting the cartridge. Since the center of rotation of the door 14 is provided on the lower side, the door receives the cartridge when inserting the cartridge. Since it serves as a guide, insertion becomes easy. In particular, the opening 23a or the insertion opening 11 is the second door piece 1
When it is closed by 3, the first door piece 12 is in a state of horizontally projecting forward from the opening 23a as shown in the drawing. Therefore, when the cartridge is inserted, the tip of the cartridge is abutted on the protruding door piece. Therefore, it is only necessary to insert along this, and the insertion work becomes easier.

7 (a) and 7 (b) are respectively D of FIG. 4 (a).
7A is an enlarged view of a portion C and a portion C of FIG. 3C, and FIG.
An elastic member 30 such as rubber that comes into contact with is disposed to enhance the sealing effect (dustproof effect). 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 end of 3 to enhance the sealing effect. Since the engagement portion between the door piece and the shell is in the engagement state between the concave portion and the convex portion, it has a structure that can inherently exhibit the dustproof effect, but by arranging the elastic member, the effect can be secured. Can be Note that a stepwise engagement state may be used.

Next, the present invention may be modified as follows. That is, a part or all of the door 14 that is closed when the cartridge is inserted is made of a material that shields only the wavelength substantially the same as the laser wavelength and transmits other light. Specifically, infrared rays can be obtained by blending a natural color or a blue or gray pigment different from the laser light color (nearly red) of PC or ABS, which is a transparent plastic material, to the extent that transparency is not impaired. While having a function of cutting off the above, 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 so as to be openable and closable on one side.
Since the inner second door piece is biased outward with respect to the insertion opening and the first door piece is biased toward the second door piece, before the cartridge is inserted. Second
The door piece closes the insertion opening, and both door pieces spread at an interval of 180 degrees to guide the cartridge in the insertion process, and the first door piece closes the insertion opening when the mounting is completed, so that the insertion / removal operation of the cartridge is performed. Since the door will open and close in conjunction with, no special drive sources such as motors and solenoids or link mechanisms are required, and downsizing and cost reduction can be achieved. 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, which facilitates insertion of the cartridge. Further, since one end of the door projects from the drive bezel, the insert operability can be further enhanced.

When the cartridge is inserted or removed, a protrusion is provided on a part of the door piece that comes into contact with the lower surface of the cartridge and serves as a guide, and the lower surface of the cartridge is guided by the protrusion, so that the door is not easily scratched and the cartridge is Insertion becomes smooth.

When the first door piece and the second door piece forming the door abut on the upper edge portion of the insertion opening of the shell to close the insertion opening, the upper end portion of each door piece, Since the upper edge portion of the insertion opening engages with the concave and convex portions, the gap between the contact portions is eliminated, and the sealing effect can be enhanced. Further, the dustproof effect can be further enhanced by disposing the packing made of an elastic member at the contact portion. Since the indication that the cartridge is inserted is attached to the surface of the first door piece that closes the insertion opening when the cartridge is mounted, it is possible to prevent the user from accidentally inserting the cartridge twice. .
Further, by making a part or all of the door transparent or semi-transparent, it is possible to visually check whether or not the cartridge is mounted, so that double insertion can be prevented.

[Brief description of drawings]

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

FIG. 2A and FIG. 2B are cross-sectional views showing the operation when the cartridge is mounted.

FIG. 3C is a sectional view showing the mounting operation of the cartridge following FIGS. 2A and 2B.

FIG. 4A and FIG. 4B are cross-sectional views showing the operation when the cartridge is ejected.

5 (c) is a cross-sectional view showing the operation at the time of ejecting the cartridge following FIG.

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

FIG. 7A and FIG. 7B are explanatory views of a main part configuration.

8A and 8B are explanatory views of a conventional example.

[Explanation of reference numerals] 10 shell, 11 cartridge insertion opening, 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 protrusion, 23 exterior body, 25 cartridge, 26 locking protrusion, 28 door,

Claims (9)

[Claims] 1. A recording / reproducing apparatus provided with an insertion opening for inserting / removing a cartridge containing an information recording medium into / from a drive, a door for opening / closing the insertion opening, and an opening / closing mechanism for opening / closing the door. In the open / close mechanism, the opening / closing mechanism is configured to urge the two door pieces, the inner and outer door pieces pivotally supported by the insertion opening by the same common rotation shaft, and the second door pieces so as to approach each other.
And a first spring that constantly urges at least one of the two door pieces outwardly. An opening / closing mechanism for an insertion opening of a cartridge or the like. 2. The opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1, wherein the two door pieces, inside and outside, are pivotally supported at a lower edge of the insertion opening. 3. The insertion of the cartridge or the like according to claim 1 or 2, wherein the tip of the outer door piece of the two inner and outer door pieces is projected substantially horizontally from the insertion opening to the outside. Mouth opening and closing mechanism. 4. An opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1, wherein a cutout portion for accommodating the spring is provided in a part of the inner and outer door pieces and the insertion opening. . 5. The insertion of the cartridge or the like according to claim 1, wherein a guide protrusion is provided at an appropriate position on the inner door piece or the outer door piece to serve as a guide for inserting and removing the cartridge. Mouth opening and closing mechanism. 6. The structure is such that, when each door piece closes the insertion opening, the leading end portion of each door piece and the edge portion of the insertion opening are fitted in a concave-convex shape or stepwise. An opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1 or 2. 7. An opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 6, wherein an elastic member is arranged at one of the contact portions between each door piece and the insertion opening. 8. An opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1, wherein a display for notifying that the cartridge is inserted is provided on one surface of the outer door piece. . 9. The opening / closing mechanism for an insertion opening of a cartridge or the like according to claim 1, wherein at least a part of each door piece is a transparent portion that does not transmit a wavelength of laser light.