JP2009037708A - Tray cover open/close mechanism, and disk recording and/or reproduction apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve dust resistance by reducing a clearance between a housing and a tray lid, and reduce the number of parts. <P>SOLUTION: Ther are provided a tray 11 on which an optical disk is placed, a housing having an opening 3 for loading and unloading the tray 11, a tray conveying mechanism for moving the tray 11 linearly back and forth so that the tray 11 is loaded and unloaded through the opening 3, a tray cover 18 that is rotatably supported by the housing to open and close the opening 3, and a movement converting mechanism for a linear movement of the tray 11 into a rotational movement of the tray cover 18 so that the opening is opened and closed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tray door opening / closing mechanism that opens and closes a tray door that opens and closes an opening of a housing by movement of the tray, and a disk recording and / or reproducing apparatus including the tray door opening / closing mechanism.

  As a conventional tray door opening / closing mechanism of this type, for example, there is one described in Patent Document 1. Patent Document 1 describes a tray mechanism and an optical disk device. The tray mechanism described in Patent Document 1 is described as follows: “A tray main body that can be projected and retracted through an elongated opening provided in the casing and extending outside and inside the casing; and a front end of the tray main body. An elongated tray base corresponding to the opening, and attached to the tray base so as to be movable in the protruding and retracting direction of the tray body, and the tray body is retracted into the housing. An elongate tray lid that covers the opening and abuts against a casing portion around the opening, and a spring portion is provided integrally with the tray base on the tray base, and the spring portion is formed on the tray base. A base portion protruding from the base portion, and an elongated shape portion connected to the base portion and extending in a longitudinal direction of the tray base and extending elastically in a direction perpendicular to the extending direction, An engagement portion that engages with the elongated shape portion is provided in the tray lid, and the tray base and the tray lid are configured so that the elongated shape portion and the engagement portion are engaged with each other. The tray base is attached in a state of being biased in a direction in which they are close to each other ”.

  According to the tray mechanism having such a configuration (hereinafter referred to as “first conventional example”), “in order to simplify the configuration and reduce the cost and size, and to improve the workability during assembly” An advantageous tray mechanism and optical disc apparatus can be provided ”(paragraph [0019] of the specification).

  Moreover, as a conventional optical disc apparatus of this type, there is also one described in Patent Document 2, for example. Patent Document 2 describes a loading tray type optical disk apparatus that exchanges an optical recording medium by placing the optical recording medium on a disk tray that is drawn out and stored from the front of the apparatus. The optical disk device described in Patent Document 2 is “in an optical disk device that records or reproduces information by irradiating a rotated optical disk with a light beam, and an external housing having a first opening formed in the front surface; An internal housing that is supported inside the external housing via an insulator, has a second opening formed in the front surface, and is provided with a rotation drive unit and an optical pickup unit of the optical disk inside The optical disk is detachably mounted, and is driven to be retractable and housed from the internal housing through the first opening and the second opening, and the second opening is formed at the front end. A disc tray for forming a covering plate-like member and closing the second opening by the plate-like member and sealing the inner case in a state of being housed in the inner case. It is characterized.

  According to the optical disk apparatus having such a configuration (hereinafter referred to as “second conventional example”), “the disk drive unit can be protected from dust only by the internal casing regardless of the structure of the external casing, The effect of “the dustproof function of the internal housing is not impaired even when the internal housing is greatly displaced relative to the external housing due to an external impact” (paragraph [0035] of the specification) is expected.

  Further, as a conventional recording / reproducing apparatus of this type, there is also one described in Patent Document 3, for example. Patent Document 3 describes a recording / reproducing apparatus having a media door that is arranged in front of a media insertion slot and opens and closes the media insertion slot. The recording / reproducing apparatus described in Patent Document 3 is “a recording / reproducing apparatus provided with a media door at a media insertion slot, and the media door sinks into the media insertion slot by an operation to insert a predetermined medium”. Is provided with an opening / closing means for opening the media insertion opening ”.

According to the recording / reproducing apparatus having such a configuration (hereinafter referred to as “third conventional example”), “the media door enters the inside of the media insertion slot, so that the media insertion slot is largely opened. It does not hinder the movement of fingers when inserting media, and when the media door is opened, the media door is located at the top, so it is possible to guide the insertion and removal of media ”(paragraph [0082] of the specification) The effect is expected.
JP 2004-259316 A JP 2001-266441 A JP 2001-101736 A

  However, in the case of the tray mechanism of the first conventional example among the above-described conventional techniques, when the tray door is fixed to the front end of the tray and the tray is moved backward, the tray door fixed to the front end is opened. The structure was closed. Therefore, it is difficult to form the positional relationship between the front panel having the opening and the tray with high accuracy, and there is an inadequate point that a gap is formed between the opening and the tray lid, resulting in poor dust resistance. . Furthermore, since it is necessary to completely cover the opening with the tray cover, the tray cover is formed larger than the opening, and thus there is a problem that the restriction on the design by the large tray cover is large.

  In the case of the optical disk device of the second conventional example, a shutter is rotatably supported by a hinge on the lower side of the opening provided in the front panel, and the opening is urged by a torsion spring. It was configured to close. Then, the shutter is pushed forward by the movement of the tray, the opening is opened, and the tray is pushed out to a predetermined position. Therefore, the space around the lower edge of the opening on the front panel requires a space for retracting the shutter from the trajectory of the tray and a space for fixing the hinge. There was a problem of receiving.

  In order to solve the problems of the first and second conventional examples, the recording / reproducing apparatus of the third conventional example has been developed. In this recording / reproducing apparatus, an electric motor is used as a power source. Thus, the tray lid is flipped up to open the opening. As a result, the number of parts used increases, resulting in not only high costs but also drive control of the motor, which complicates the structure.

  The problem to be solved is that the conventional tray door opening / closing mechanism has a gap between the opening and the tray lid, resulting in poor dust resistance, and the tray lid is larger than the opening. There was a problem that restrictions on In addition, a space for retracting the shutter from the movement locus of the tray and a space for fixing the hinge are required, and there is a problem that the design is restricted around the opening. Further, since the number of parts to be used increases, there is a problem that not only the cost is increased but also drive control of the motor is required.

  The tray door opening / closing mechanism of the present invention includes a tray on which an object to be transported is placed, a housing having an inlet / outlet through which the tray is inserted / extracted, and a tray transport mechanism that linearly moves the tray forward / backward so as to be inserted / extracted through the inlet / outlet. A tray door that is rotatably supported by the casing or a casing-side member fixed to the casing and that can be opened and closed, and a linear movement of the tray is converted into a rotating movement of the tray door. The main feature is to provide a motion conversion mechanism for opening and closing.

  Further, the disc recording and / or reproducing apparatus of the present invention linearly mounts a tray so that a disc-shaped recording medium is placed thereon, a housing having an inlet / outlet through which the tray is inserted / removed, and the tray to be taken in / out from the inlet / outlet. A tray transport mechanism that moves forward and backward, a tray door that is pivotally supported by the casing or a casing-side member that is fixed to the casing, and that can be opened and closed, and the tray door that rotates the tray linearly. A motion conversion mechanism for converting into motion and opening / closing the entrance / exit, a disk drive device for recording and / or reproducing information signals with respect to a disk-shaped recording medium supplied by being mounted on a tray and conveyed; It is characterized by providing.

  According to the tray door opening and closing mechanism and the disk recording and / or reproducing apparatus of the present invention, it is possible to reduce the gap between the entrance and exit provided in the housing and the tray door, and to improve the dustproof performance, The appearance around the doorway can be improved and the degree of freedom in design can be increased.

  The tray door is rotatably supported by the casing or a casing-side member fixed to the casing, and the linear movement of the tray conveyed by the tray conveying mechanism is converted into the rotating movement of the tray door by the movement converting mechanism. A tray door opening / closing mechanism and a disc recording and / or reproducing apparatus that can reliably open and close the door by rotating the door to open and close the door are realized with a simple structure.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 8 show examples of embodiments of the present invention. 1 is an external perspective view showing a first embodiment of the disk recording and / or reproducing apparatus of the present invention, FIG. 2 is an external perspective view showing a state in which the lid is opened, and FIG. 3 is a front view. 4 is a sectional view taken along line XX of FIG. 3, FIG. 5 is an exploded perspective view of the tray door opening / closing mechanism according to the present invention, FIG. 6 is an explanatory view of the state where the doorway is closed by the tray door, and FIG. FIG. 8 is an explanatory view showing a state where the doorway is fully opened, and FIG. 8 is an explanatory view showing a state where the doorway is completely opened.

  FIG. 1 and FIG. 2 show a tray conveyance type disk recording / reproducing apparatus showing a first embodiment of a suitable electronic apparatus using the tray door opening / closing mechanism of the present invention. The disc recording / reproducing apparatus 1 includes a housing 2 that is an outer case, a disk drive device (not shown) housed in the housing 2, and a tray door that opens and closes an entrance / exit 3 including an opening provided in the housing 2. An opening / closing mechanism 4 is provided. This disc recording / reproducing apparatus 1 reads and reproduces information recorded in advance on an information recording surface of an optical disc by using an optical disc capable of recording and reproduction as a specific example of a disc-shaped recording medium as an information recording medium. Or writing and recording new information on the information recording surface. The optical disc shows a specific example of the conveyance object.

  However, it goes without saying that the tray door opening / closing mechanism of the present invention can be applied to an optical disk reproducing apparatus that can only reproduce information signals and an optical disk recording apparatus that can only record information signals. Further, the present invention can be applied to a magnetic disk reproducing apparatus, a magnetic disk recording apparatus, and a magnetic disk recording / reproducing apparatus using a magnetic disk other than an optical disk as an information recording medium, and a magneto-optical disk reproducing using a magneto-optical disk as an information recording medium. The present invention can be applied to an apparatus, a magneto-optical disk recording apparatus, and a magneto-optical disk recording / reproducing apparatus. Further, the electronic apparatus to which the tray door opening / closing mechanism of the present invention can be applied is not limited to the disk recording and / or reproducing apparatus described in this embodiment and the like, and the object to be conveyed is conveyed using the tray. In addition, the present invention can be applied to any apparatus, machine, or the like using a tray conveyance system in which the tray enters and exits the entrance / exit.

  As shown in FIG. 1, the housing 2 of the disk recording / reproducing apparatus 1 includes a main body 5 formed of a rectangular parallelepiped hollow container and a lid body 6 that covers a part of the front surface of the main body 5 so as to be opened and closed. The housing 2 is a rectangular parallelepiped base panel 7 whose upper surface is opened, a front panel 8 that is superimposed on the front portion of the upper surface of the base panel 7 and whose lower surface and rear surface are opened, and a rear portion of the upper surface of the base panel 7. The rear panel 9 is overlapped and has a lower surface and an open front surface. A combination of the base panel 7, the front panel 8, and the rear panel 9 constitutes a casing 2 formed of a hollow container having a single rectangular parallelepiped shape, and records and reproduces information signals using an optical disk as an information recording medium. A disk drive device (not shown), a control device therefor, and other necessary devices and equipment are accommodated.

  As shown in FIG. 2, a lid body 6 is disposed on the front surface of the front panel 8, and the lid body 6 is supported by a pair of arm links 10L and 10R so as to be movable forward. The front portion 8a of the front panel 8 has a planar shape that forms a horizontally long rectangle, and an entrance / exit 3 that is also formed in a horizontally long rectangle is provided at a substantially central portion of the front surface portion 8a. The entrance 3 is an opening for allowing the tray 11 to be taken in and out of the housing 2 and is formed to be slightly larger than the surface shape when the tray 11 is viewed from the moving direction. Further, an eject button 12, a first button group 13, a second button group 14, and the like are disposed around the entrance / exit 3 of the front surface portion 8a. And in order to avoid the contact with the eject button 12 and the 1st button group 13, the button escape recessed part 15 is provided in the back surface of the cover body 6 facing these.

  The eject button 12 is switch means for operating a tray transport mechanism (not shown) in order to allow the tray 11 to be taken in and out of the entrance 3. For example, a push / push type changeover switch can be applied to the eject button 12. For example, when the eject button 12 is pressed once, the tray transport mechanism is operated so that the tray 11 is ejected from the entrance 3 by a predetermined amount. When the eject button 12 is continuously pressed, the tray transport mechanism is operated so that the tray 11 is completely drawn from the entrance 3. On the upper surface of the tray 11, there is provided a disc storage portion 16 composed of an annular recess for placing an optical disc.

  Examples of the first button group 13 include a power button, a menu button, and a screen display button. Examples of the second button group 14 include a record button, a playback button, a fast forward button, and a rewind button.

  Further, through holes 17L and 17R for projecting the pair of arm links 10L and 10R are provided on both sides in the longitudinal direction of the front surface portion 8a of the front panel 8. The through holes 17L and 17R extend in the width direction orthogonal to the longitudinal direction of the front surface portion 8a, and the arm links 10L and 10R can move within a predetermined range in the vertical direction that is the width direction. ing. Each arm link 10L, 10R is composed of a link mechanism configured like a pantograph structure by combining a plurality of links.

  One end of each of the pair of arm links 10 </ b> L and 10 </ b> R is fixed to both ends in the longitudinal direction of the back surface of the lid body 6. The other ends of the arm links 10L and 10R are fixed to the casing 2 inside the casing 2, respectively. The pair of arm links 10L, 10R is configured such that the free end side of the lid body 6 can be rotationally displaced downward from the front surface portion 8a of the front panel 8 with respect to the fixed side of the housing 2 as a reference. Through the operation of the pair of arm links 10L and 10R, the lid body 6 is overlapped with the front face portion 8a of the front panel 8 as shown in FIG. It is possible to selectively take an open state in which the doorway 3 is opened by being rotationally displaced downward on the front side of the panel 8.

  As shown in FIG. 4, bearing wall portions 8 b and 8 c are provided on the rear surface of the front surface portion 8 a of the front panel 8 so as to protrude rearward in parallel with each other on both sides in the longitudinal direction of the entrance / exit 3. . A tray door 18 capable of opening and closing the doorway 3 is rotatably supported inside the bearing wall portions 8b and 8c, and a support plate 19 showing a specific example of the housing side member is fixed. .

  As shown in FIG. 5, the support plate 19 is composed of a U-shaped member formed so that both ends in the longitudinal direction of a rectangular plate having a strip shape are bent in the same direction. Thus, the support plate 19 is provided with two fixed pieces 19a and 19b arranged so as to face each other with a predetermined interval, and a connecting piece 19c for connecting the two fixed pieces 19a and 19b. A bearing hole 21a is provided in a substantially central portion of the first fixing piece 19a, and screw holes 22 and 22 are provided in two corners opposed to one diagonal direction. Similarly, a bearing hole 21b is provided at a substantially central portion of the second fixed piece 19b, and screwing insertion holes 22 and 22 are provided at two corner portions opposed to the other diagonal direction. Yes. The bearing hole 21a of the first fixed piece 19a and the bearing hole 21b of the second fixed piece 19b are set on the same axis.

  Further, a spring receiving piece 23 and a support shaft 24 are provided on the second fixed piece 19 b of the support plate 19. The spring receiving piece 23 is disposed obliquely above the bearing hole 21b of the second fixed piece 19b, and is formed by folding a part of the second fixed piece 19b inwardly. The spring receiving piece 23 can also be formed by attaching a pin to the second fixing piece 19b. The support shaft 24 is disposed obliquely below the bearing hole 21b of the second fixed piece 19b, and is formed as a shaft portion that protrudes inward. On the support shaft 24, an operation lever 25 that is rotated by the forward / backward movement of the tray 11 is rotatably supported. The operation lever 25 is integrally provided with a drive gear 26 formed in a fan shape. Thereby, the drive gear 26 is rotated integrally with the operation lever 25.

  As shown in FIG. 5, the tray door 18 includes a bowl-shaped door portion 18 a that opens and closes the doorway 3, a first arm portion 18 b provided to face each other at both ends in the longitudinal direction of the door portion 18 a, and It is formed as a U-shaped member having the second arm portion 18c. The reason why the door portion 18a of the tray door 18 has a bowl shape is that the tray door 18 is configured to open and close the doorway 3 by rotating in the vertical direction. This is to prevent the portion 18a from obstructing the opening / closing operation and to improve the aesthetic appearance.

  On the outer surface of the first arm portion 18b of the tray door 18, a first rotation shaft 27a that protrudes outward is provided. The first rotation shaft 27a passes through a bearing hole 21a provided in the first fixed piece 19a of the support plate 19 so as to be rotatable, and is formed in a bearing hole 28a provided in the bearing wall portion 8b of the front panel 8. It is supported rotatably. Similarly, a second rotating shaft 27b protruding outward is provided on the outer surface of the second arm portion 18c. The second rotation shaft 27b passes through a bearing hole 21b provided in the second fixed piece 19b of the support plate 19 so as to be rotatable, and also into a bearing hole 28b provided in the bearing wall portion 8c of the front panel 8. It is supported rotatably. The first rotation shaft 27a and the second rotation shaft 27b are arranged so that their axis lines overlap on the same axis line.

  Further, a spring receiving pin 29 protruding outward is provided on the outer surface of the second arm portion 18c, and a driven gear 31 is provided on the inner surface of the second arm portion 18c so as to protrude inward. The spring receiving pin 29 is disposed at a position close to the door portion 18a of the second arm portion 18c. The driven gear 31 is arranged coaxially with the second rotating shaft 27b of the second arm portion 18c, and is fixed to the second arm portion 18c by an adhering means such as an adhesive or screw. ing. The driven gear 31 is attached so as to always mesh with the drive gear 26 supported by the support plate 19.

  As shown in FIG. 4, the support plate 19 having the above-described configuration is configured so that the left and right fixing pieces 19 a and 19 b are fixed to the left and right bearing wall portions 8 b and 8 c with fixing screws 32 in a state where the connecting piece 19 c is directed downward. It is attached by fixing. The tray door 18 is disposed between the left and right fixed pieces 19a and 19b of the support plate 19, and bearing shafts 28a and 27b provided on the left and right bearing wall portions 8b and 8c are provided with pivot shafts 27a and 27b projecting on the left and right sides. , 28b is supported so as to be rotatable in the vertical direction. A torsion spring 33 showing a specific example of an elastic member is interposed between the second arm portion 18c of the tray door 18 and one fixed piece 19b of the support plate 19.

  As shown in FIG. 5 and the like, the torsion spring 33 includes a coil portion 33a wound in a ring shape, a door-side spring piece 33b and a support-side elastic piece 33c formed continuously at both ends of the coil portion 33a. have. A second rotating shaft 27 b is inserted into the coil portion 33 a of the torsion spring 33. The door-side spring piece 33 b of the torsion spring 33 is locked to the spring receiving pin 29 of the tray door 18, and the support-side elastic piece 33 c is locked to the spring receiving piece 23 of the support plate 19. As shown in FIG. 6, the tray door 18 is constantly urged by the spring force of the torsion spring 33 in the direction of closing the doorway 3.

  The operation lever 25, the drive gear 26, and the driven gear 31 described above constitute a motion conversion mechanism that converts the linear motion of the tray 11 into the rotational motion of the tray door 18. A moving force of the tray 11 is transmitted as a rotational force to the tray door 18 through a gear train composed of the drive gear 26 and the driven gear 31. As a result, the door portion 18a of the tray door 18 is selectively moved to a first position where the doorway 3 is closed and a second position where the doorway 18 is moved backward from above to open the doorway 3.

  6 to 8 illustrate the opening and closing operation of the tray door 18 with respect to the entrance 3. That is, FIG. 6 is a view showing a state in which the doorway 3 is closed by the door portion 18 a of the tray door 18. At this time, the tray 11 is retracted to the rear of the tray door opening / closing mechanism 4, and the tray door 18 is urged clockwise in the figure by the spring force of the torsion spring 33. Therefore, the door portion 18a of the tray door 18 can be fitted into the entrance / exit 3 from the inside, and the entrance / exit 3 can be reliably closed. Thereby, the doorway 18 is closed by the door part 18a, and it can fully prevent that dust, dust, etc. enter the inside of the housing | casing 2 from the doorway 3. FIG. At this time, in the state where the tray 11 is housed in the housing 2, recording and reproduction of information signals are performed by a disk drive device (not shown).

  Thereafter, the tray door 18 is opened by, for example, operating the eject button 12 in order to take out the optical disk when the recording / reproducing of the information signal by the disk drive device is completed or to use a new optical disk. Executed. First, when the eject button 12 is pressed, the operation of the tray transport mechanism is started, and the tray 11 is linearly moved to the entrance / exit 3 side. An operation portion 25a that is an input portion of the operation lever 25 of the motion conversion mechanism protrudes in front of the movement trajectory of the tray 11. Therefore, the front end portion of the tray 11 is brought into contact with the operation portion 25a of the operation lever 25, and the operation lever 25 is rotated clockwise around the support shaft 24 in FIG.

  At this time, since the driven gear 31 meshes with the drive gear 26 provided integrally with the operation lever 25, the driven gear 31 is rotated counterclockwise about the second rotation shaft 27b. The Thus, the tray door 18 is rotated counterclockwise in FIG. 7 against the spring force of the torsion spring 33. As a result, the door portion 18a of the tray door 18 is rotated upward so as to open the doorway 3 shown in FIG. 7 from the state (first position) where the doorway 3 shown in FIG. 6 is closed. When the tray 11 moves forward by a predetermined amount, as shown in FIG. 8, the door 18a is rotated to a position where the doorway 3 is fully opened (second position).

  The completely opened state of the tray door 18 is achieved when the tray 11 passes the operation portion 25a of the operation lever 25. Thereafter, since the tray 11 merely slides and moves on the upper surface of the operation unit 25a, the tray door 18 is not further rotated counterclockwise. Then, the disc storage portion 16 is exposed by protruding the tray 11 from the entrance / exit 3 by a predetermined amount. As a result, it becomes possible to take out the optical disk stored in the disk storage unit 16 and store a new optical disk in the disk storage unit 16.

  On the other hand, the closing operation of the entrance / exit 3 by the tray door 18 is performed by an operation reverse to the above-described opening operation. That is, as the tray 11 moves in the direction of entering the housing 2, first, the operation lever 25 is rotated counterclockwise in FIG. As a result, the drive gear 26 integrated with the operation lever 25 is rotated counterclockwise, and the driven gear 31 meshing with the drive gear 26 is rotated clockwise. As a result, the driven gear 31 integrated with the tray door 18 is rotated clockwise in FIG. 7, and the door portion 18 a enters the inside of the entrance / exit 3. And if the tray 11 moves to the back which leaves | separates from the operation lever 25, as shown in FIG. 6, the entrance / exit 3 will be completely closed by the door part 18a with the spring force of the torsion spring 33. As shown in FIG.

  In the above-described embodiment, a damper capable of controlling the rotation of the tray door 18 is not provided. However, such a damper may be provided. By adding a damper to the mechanism, for example, the opening / closing operation of the tray door can be slowly performed to improve the quality of the closing operation.

  As described above, according to the present invention, compared to a structure in which a lid is fixed to the front end of the tray, the tray lid can be directly incorporated into the housing, so that the gap between the housing and the tray lid is reduced. It is possible to improve the dust-proof property and to enhance the aesthetics, which is advantageous in design. In addition, the number of parts can be reduced compared to the motor-driven door opening / closing mechanism, the structure can be simplified, the cost can be reduced, and the quality can be stabilized. Further, since a space under the door is not required as compared with the door opening / closing mechanism using the lower hinge, the degree of freedom in designing the front surface of the electronic device using the tray door opening / closing mechanism can be increased. Furthermore, since the tray door only moves within the housing when the doorway is opened, the appearance of the electronic device is not greatly changed and complicated.

  In the embodiment, the support plate 19 is provided, and the operation lever 25 and the drive gear 26 are supported on the support shaft 24 erected on the support plate 19. It is also possible to provide directly on 8c and to support the operation lever 25 and the drive gear 26 in a freely rotatable manner. Furthermore, the present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, an example in which a disk recording and / or reproducing apparatus is applied as a specific example of the electronic apparatus has been described. However, the electronic apparatus is provided with a tray door opening / closing mechanism that opens and closes an entrance door by moving the tray. If so, it can be applied to various electronic devices.

1 is an external perspective view showing a first embodiment of a disk recording and / or reproducing apparatus of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an external appearance of a disk recording and / or reproducing apparatus according to a first embodiment of the present invention with a lid opened. It is a front view which shows the 1st Example of the disc recording and / or reproducing | regenerating apparatus of this invention. FIG. 4 is an explanatory view showing a section taken along line XX shown in FIG. 3. 1 is an exploded perspective view showing a first embodiment of a disk recording and / or reproducing apparatus according to the present invention. FIG. 9 is an explanatory diagram illustrating the operation of the tray door opening / closing mechanism according to the present invention and is a cross-sectional view showing a state in which the entrance / exit is closed by the tray door. FIG. 9 is an explanatory view illustrating the operation of the tray door opening / closing mechanism of the present invention and is a cross-sectional view illustrating a state where the tray door is rotated halfway to open the doorway halfway. FIG. 9 is an explanatory diagram illustrating an operation of the tray door opening / closing mechanism of the present invention, and is a cross-sectional view illustrating a state where the tray door is rotated to the end and the doorway is completely opened.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Disc recording / reproducing apparatus (electronic device), 2 ... Housing, 3 ... Entrance / exit, 4 ... Tray door opening / closing mechanism, 5 ... Main body, 6 ... Cover, 7 ... Base panel, 8 ... Front panel, 8a ... Front part 8b, 8c ... bearing wall, 10L, 10R ... arm link, 11 ... tray, 12 ... eject button, 18 ... tray door, 18a ... door, 18b, 18c ... arm, 19 ... support plate (housing side member ), 19a, 19b ... fixed piece, 21a, 21b ... bearing hole, 24 ... support shaft, 25 ... operation lever, 25a ... operation part (input part), 26 ... drive gear, 27a, 27b ... rotating shaft, 28a, 28b ... bearing hole, 29 ... spring receiving pin, 31 ... driven gear, 33 ... torsion spring (elastic member)

Claims (5)

A tray on which the object to be transported is placed;
A housing having an inlet / outlet through which the tray is put in and out;
A tray conveyance mechanism that linearly moves the tray forward and backward so as to be taken in and out from the entrance,
A tray door that is rotatably supported by the casing or a casing-side member fixed to the casing, and is capable of opening and closing the doorway;
A tray door opening / closing mechanism, comprising: a movement converting mechanism that converts a linear movement of the tray into a rotational movement of the tray door to open and close the entrance / exit. The motion conversion mechanism is
An operation lever having an input portion protruding on the movement trajectory of the tray and rotated by the forward and backward movement of the tray;
A gear train for rotating the tray door based on the rotation of the operation lever to move the tray door to a first position for closing the doorway and a second position for opening the doorway;
The tray door opening / closing mechanism according to claim 1, further comprising: an elastic member that biases the tray door toward the first position. The gear train is provided on the operation lever and is rotatably supported by the housing or the housing-side member, and a driven gear meshed with the drive gear and fixed to the tray door. The tray door opening / closing mechanism according to claim 2, comprising: The tray door includes a door portion that closes the doorway, and an arm portion that is continuous with the back surface of the door portion and extends in a direction substantially perpendicular to the back surface,
The tray door opening / closing mechanism according to claim 3, wherein the driven gear is provided in the arm portion. A tray on which a disk-shaped recording medium is placed;
A housing having an inlet / outlet through which the tray is put in and out;
A tray conveyance mechanism that linearly moves the tray forward and backward so as to be taken in and out from the entrance,
A tray door that is rotatably supported by the casing or a casing-side member fixed to the casing, and is capable of opening and closing the doorway;
A motion conversion mechanism for converting the linear motion of the tray into a rotational motion of the tray door to open and close the entrance and exit,
And a disk drive device for recording and / or reproducing information signals to and from the disk-shaped recording medium supplied by being mounted on the tray and transported. Or a playback device.

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