JP2020135911A - Recording medium loading device and electronic device or audiovisual device using the same - Google Patents

Abstract

To provide an electronic device or an audiovisual device possible to accurately realize positioning of a transport tray in the open/closed state at a low cost, with smooth unloading/loading and high operation quality, and excellent aesthetics.SOLUTION: A recording medium loading device includes: a transport tray 3 having a tray panel 2; a first boss 3i, and a second boss 3j provided on a front side so as to be movable along a guide rail 4a and so as to be away from the first boss by a distance longer than a movable distance X of the transport tray. A guide rail for loader section 4 includes: a first groove section 4c having a width becoming narrower so that the first boss of the transport tray is engaged in a closed state; a second groove section 4d provided at a distance X from the first groove section to a front side and having a width becoming narrower so that the first boss of the transport tray is engaged in an open state; and a third groove section 4e provided at a distance from the second groove section to the front side and having a width becoming narrower so that the second boss of the transport tray is engaged in an open state.SELECTED DRAWING: Figure 9

Description

The present invention relates to a recording medium loading device that unloads / loads a recording medium such as an optical disk by moving it forward or backward along a predetermined reference axis, and an electronic device or audio-visual device using the recording medium loading device.

An audio-visual device such as an electronic device or a DVD player has an opening in a panel member constituting the housing, and an unloading operation / loading operation is performed by moving a transport tray for transporting a recording medium such as an optical disk forward or backward through the opening. May have a recording medium loading device. For example, the recording medium loading device is configured integrally with a disk drive device that reads / writes an optical disc, and enables the recording medium to be loaded at a predetermined position in the housing.

The recording medium loading device moves the transport tray forward or backward, loads the recording medium in place when the transport tray fits inside the opening, and can load or eject the recording medium when protruding from the opening. Works to enable. The operation of moving the transport tray forward and projecting it from the opening is called an unload operation or an eject operation, and the state in which the transport tray moves forward and stops may be called an open state. Further, the operation of retracting the transport tray and putting it in the opening is called a loading operation or a loading operation, and the state in which the transport tray is housed in the housing may be called a closed state. In the recording medium loading device, in order to move the transport tray forward or backward, a mechanism for rotating a pinion that meshes with a rack provided on the transport tray by a motor is often adopted, and specifically, various structures are adopted.・ Mechanism is adopted.

In an electronic device or an audio-visual device having a recording medium loading device that moves the transport tray forward or backward, the movement of the transport tray in the unload / load operation is required to be smooth and have high operation quality that does not include irregular behavior. For example, the transport tray vibrates when moving forward or backward, trembles when stopped, or makes noise due to vibration, or positioning of the transport tray in the open / closed state (predetermined). If it contains unfavorable behavior such as uncertain position), the operation quality will be low and give an unfavorable impression to the user. In particular, if the position of the transport tray with respect to the opening of the housing in the closed state is not fixed and is deviated, there is a problem that the gaps to be seen in appearance are not even and the appearance is significantly deteriorated.

For example, conventionally, in a mounting structure of a disc tray and a tray decoration, the mounting frame fixed to the disc tray is separated from the tray decoration, and the tray decoration can be displaced independently, so that the inside of the recessed portion of the cabinet There is something that makes it easy to center the tray decoration in (Patent Document 1). In addition, an elastic body that can attach the tray panel to the front of the tray and force the tray panel to the front side of the tray is provided, and recesses are provided on both sides of the back surface of the tray panel, while the tray slides. A flat surface is provided at the bottom of the opening provided in the front panel through which the tray passes, and convex portions are formed on both sides of the opening. When the tray is retracted and stored, the outer peripheral back surface of the tray panel comes into contact with the flat surface. There is a tray structure of a disc playback device, characterized in that the concave portion and the convex portion engage with each other (Patent Document 2). However, when a tray decoration having a floating mechanism is provided, there is a problem that the number of parts constituting the floating mechanism increases, resulting in an increase in cost.

Further, conventionally, a loader panel receiving portion which has a side wall in which the loading tray is loosely inserted and the opening area gradually increases toward the front surface, a flange portion at the opening end of the front surface, and is attached to the opening provided in the housing. , A front panel with an opening that fits into the outer peripheral side surface of the collar of the loader panel receiver, and a side wall that is attached to the front of the loading tray and gradually increases in cross-sectional area toward the front, and is front at the end of the side wall. A loader panel having a flange for loosely inserting an opening provided in the panel is provided, and when the flange of the loader panel comes into contact with the flange of the loader panel receiving portion, the side wall of the loader panel is placed on the side wall of the loader panel receiving portion. There is a recording / reproducing device characterized by contact (Patent Document 3). That is, some disc trays are provided with a guide structure on the front surface and can be positioned at the opening of the front panel.

However, in this structure, positioning with the opening of the front panel is added to the positioning structure of the disk tray of the loader itself, and the structure has at least three positioning structures on a straight line in the direction in which the tray moves. That is, a third positioning is added to the positioning already determined at the two locations between the loader portion and the tray. It is difficult to accurately position the three locations so as to prevent problems such as loading stacks, which requires extremely high assembly accuracy, and there is a problem that it further increases the cost.

Japanese Unexamined Patent Publication No. 2010-9678 Japanese Patent No. 3803789 Japanese Unexamined Patent Publication No. 2000-163943

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is a recording medium loading device for moving a transport tray on which a recording medium is placed forward or backward along a predetermined reference axis. In the above, the positioning of the transport tray in the open state / closed state can be realized accurately and at low cost, the unloading / loading operation is smooth and the operation quality is high, and the electronic equipment or audio-visual equipment having excellent aesthetics is provided. To provide.

The recording medium loading device of the present invention includes a transport tray on which a recording medium is placed, a loader portion for advancing or retracting the transport tray along guide rails slidably engaged with a plurality of guide portions of the transport tray. A recording medium loading device comprising: a housing having at least a panel member to which a loader is attached and defining an opening for the transport tray to enter and exit, wherein the transport tray engages the panel member in a closed state to open the opening. The tray panel to be closed, the first boss provided so as to be movable along the guide rail at a position distant from the tray panel to the rear side, and the transport tray separated from the first boss by a distance Y longer than the movable distance X. The first boss is provided on the front side so as to be movable along the guide rail, and the width of the guide rail of the loader portion is narrowed so that the first boss of the transport tray is engaged in the closed state. A second groove that is provided at a distance X from the first groove to the front side and narrows so that the first boss of the transport tray engages in the open state, and a distance Y from the second groove to the front side. It has a third groove portion that is provided apart and narrows in width so that the second boss of the transport tray engages in the open state.

Preferably, in the recording medium loading device of the present invention, the tray panel of the transport tray has a convex portion protruding rearward, and the panel member of the housing is engaged with the convex portion in a closed state around the opening. It has a recess.

Preferably, in the recording medium loading device of the present invention, the transport tray further has a plurality of hook portions for sandwiching the guide rail between the transport tray and the plurality of guide portions, and at least among the plurality of guide portions and the plurality of hook portions. The transport tray moves forward or backward with the same four points in contact with the guide rail.

In addition, the electronic device or audio-visual device of the present invention includes the above-mentioned recording medium loading device.

Hereinafter, the operation of the present invention will be described.

In the recording medium loading device of the present invention, a transport tray (3) on which a recording medium is placed and a guide rail (4a) slidably engaged with a plurality of guide portions (3e to 3h) of the transport tray (3). A loader portion (4) for advancing or retreating the transport tray (3) along the line, and a panel member (1) to which the loader portion (4) is attached and defining an opening (1a) through which the transport tray (3) enters and exits. It includes at least a housing.

The transport tray (3) has a tray panel (2) that engages with the panel member (1) to close the opening (1a) in the closed state, and a guide rail (2) at a position separated from the tray panel (2) to the rear side. The first boss (3i) movably provided along the 4a) and the transport tray (3) are separated from the first boss (3i) by a distance Y longer than the movable distance X to the guide rail (4a). It has a second boss (3j) provided on the front side so as to be movable along the line. In the recording medium loading device, the tray panel (2) of the transport tray (3) has a convex portion (2a) projecting to the rear side, and the panel member (1) of the housing is formed around the opening (1a). It may have a concave portion (1b) with which the convex portion (2a) engages in the closed state.

Further, the guide rail (4a) of the loader portion (4) has a first groove portion (4c) whose width is narrowed so that the first boss (3i) of the transport tray (3) is engaged in the closed state. Therefore, in the closed state, the transport tray (3) is positioned on the front side between the tray panel (2) and the opening (1a), and the first boss (3i) and the guide rail (3i) of the transport tray (3) are positioned. Positioning on the rear side with the first groove portion (4c) of 4a) is performed.

Further, the guide rail (4a) of the loader portion (4) is provided on the front side at a distance X from the first groove portion (4c) so that the first boss (3i) of the transport tray engages in the open state. The second groove portion (4d) whose width is narrowed and the second boss (3j) of the transport tray (3) are engaged with each other in an open state provided at a distance Y from the second groove portion (4d) to the front side. It has a third groove portion (4e) having a narrow width. Therefore, in the open state, the transport tray (3) is positioned on the rear side between the first boss (3i) and the second groove portion (4d) of the guide rail (4a), and is positioned with the second boss (3j). Positioning on the front side with the third groove portion (4e) of the guide rail (4a) is performed.

As a result, the recording medium loading device can position the transport tray (3) and the opening (1a) of the panel member (1) in the closed state by positioning at two positions in the front-rear direction. In addition, the recording medium loading device can suppress the behavior of the transport tray (3) in the open state by positioning at two positions in the front-rear direction, and can secure the operation quality. Since the third positioning, which requires high assembly accuracy, is not required, the recording medium loading device of the present invention has an advantage that it can be assembled accurately at low cost.

The recording medium loading device further includes a plurality of hook portions (3a to 3d) in which the transport tray (3) sandwiches the guide rails (4a and 4b) between the plurality of guide portions (3e to 3h). preferable. The transport tray (3) moves forward or backward with at least the same four of the plurality of guide portions (3e to 3h) and the plurality of hook portions (3a to 3d) in contact with the guide rails (4a and 4b). Can be done. Therefore, the unloading operation / loading operation can be smoothed without causing the swinging behavior of the transport tray (3), and high operation quality can be realized.

The recording medium loading device of the present invention can accurately position the transport tray in the open state / closed state at low cost, has smooth unloading / loading operation, has high operation quality, and is excellent in aesthetics. Electronic equipment or audiovisual equipment can be provided.

It is a figure explaining the disk reproduction apparatus 10 including the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a perspective view explaining the panel member (1) which comprises the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the transport tray (3) which comprises the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the transport tray (3) which comprises the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the loader part (4) which comprises the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the closed state of the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the closed state of the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the open state of the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1) It is a figure explaining the open state of the recording medium loading apparatus by a preferable embodiment of this invention. (Example 1)

Hereinafter, a recording medium loading device according to a preferred embodiment of the present invention and an electronic device or an audio-visual device using the recording medium loading device will be described, but the present invention is not limited to these embodiments.

1A and 1B are diagrams illustrating a disc playback device 10 including a recording medium loading device according to a preferred embodiment of the present invention. Specifically, FIG. 1A is a perspective view for explaining a closed state in which the transport tray 3 of the disc playback device 10 is housed, and FIG. 1B is a perspective view for explaining an open state in which the tray 3 is ejected. The disk playback device 10 is a disk drive device including a recording medium loading device (carousel changer in the case of this embodiment) that unloads (ejects) / loads (loads) a plurality of (not shown) optical discs. For example, it constitutes an audio-visual device such as a CD player.

The disc playback device 10 in FIGS. 1A and 1B excludes a top plate that covers the inside of the housing 5 (not shown). In the following drawings, the detailed configuration of the housing of the disk playback device 10 which is not necessary for the explanation other than the recording medium loading device will be omitted from the illustration and description, and a part of the transport tray 3 will be transparently viewed. The configuration is illustrated.

The housing 5 of the disc playback device 10 has a rectangular opening 1a in the front panel 1, and a tray panel 2 that closes the opening 1a is connected to a transport tray 3 that moves back and forth. When the user presses an operation button that gives an instruction to a microcomputer (microcomputer) that controls the unload operation / load operation (not shown), the loader unit 4 moves the tray panel 2 and the transport tray 3 back and forth. The microcomputer sends a predetermined command to a motor (not shown) of the loader unit 4 to be described later, and rotates the motor to operate a rack and pinion mechanism connected to the transport tray 3 provided in the loader unit 4. When the optical disc is placed on the transport tray 3 and loaded to accommodate the transport tray 3, the user can perform a process of replaying the optical disc in a disk drive device integrally configured with the recording medium loading device.

As shown in FIG. 2A, the front panel 1 is a member molded from resin or a member molded by aluminum extrusion, and has a substantially rectangular opening 1a at the center thereof. As shown in a partially enlarged view of FIG. 2B or FIG. 2C, steps are provided on the left and right sides of the edge portion defining the opening 1a so that the tray panel 2 abuts at a position recessed from the panel surface. 1b and 1c) are provided.

FIG. 3A is a perspective view showing the upper surface side of the transport tray 3, and FIG. 4A is a perspective view showing the lower surface side of the transport tray 3. The transport tray 3 of this embodiment is a member formed of resin, and six optical discs can be placed on the upper surface side, and the loader unit 4 moves forward or backward with rotation to form six optical discs. It is intended to perform unload / load operations so that at least one of these optical discs can be replaced. As shown in FIG. 1, the transport tray 3 moves forward by a distance X when changing from the closed state to the open state.

As shown in FIGS. 3A to 3C or 4A, the tray panel 2 is a member formed of resin and is connected to the front end portion of the transport tray 3. The tray panel 2 viewed from the front is a decorative member for improving the design of the transport tray 3, and also positions the transport tray 3 in the closed state to open the opening 1a of the front panel 1 when the transport tray 3 is accommodated. Close it to prevent dust or dirt from entering the inside of the housing 5.

As shown in a partially enlarged view of FIG. 3B or FIG. 3C, convex portions 2a and 2b projecting to the rear side are provided at both left and right ends of the tray panel 2. The convex portions 2a and 2b are adapted to engage with the concave portions 1b or the concave portions 1c provided around the opening 1a of the front panel 1 in a closed state, respectively. In this embodiment, the recess 1b on the left side, which is a through hole, is a circular hole, and the recess 1c on the right side, which is a through hole, is an oval hole long in the left-right direction.

Further, FIG. 4 is a view showing the lower surface side of the transport tray 3. As shown in FIGS. 4A to 4E, the transport tray 3 having the substrate made of resin is placed on the guide rails 4a and 4b of the loader unit 4 described later on the lower surface side opposite to the upper surface side on which the optical disk is placed. It includes guide portions 3e and 3f and 3g and 3h that are slidably engaged with each other, respectively. As shown in the partially enlarged views of FIGS. 4B to 4E, the guide portion (3e to 3h) is a flat portion included in the rib formed so that the total height of the rib extending in the front-rear direction becomes higher at that location. There is a sliding surface for the guide rails (4a, 4b) of the loader portion 4. The two guide portions 3e and 3f arranged on one side in the left-right direction are separated in the front-rear direction by the moving distance X of the transport tray 3. Similarly, the two guide portions 3h and 3g arranged on the other side in the left-right direction are separated in the front-rear direction by the moving distance X of the transport tray 3.

Further, as shown in FIG. 4A, a first boss 3i that slidably engages with the guide rail 4a of the loader portion 4 is provided on the lower surface side of the transport tray 3 immediately behind the guide portion 3e. There is. Further, a second boss 3j that slidably engages with the guide rail 4a of the loader portion 4 is provided on the front side by a distance Y longer than the distance X from the first boss 3i. As a result, the two guide portions 3e and 3f separated by a distance X are arranged so as to be sandwiched between the two first bosses 3i and the second boss 3j separated by a distance Y longer than the distance X. Has been done. The first boss 3i and the second boss 3j of this embodiment are formed as a columnar portion having a width wider than that of the guide portion 3e or 3f.

Further, near each of the guide portions (3e to 3h) of the transport tray 3, a plurality of hook portions (3a to 3d) that sandwich the guide rails (4a and 4b) with the guide portions (3e to 3h). Is further provided. The hook portions (3a to 3d), together with the guide portions (3e to 3h), guide the transport tray 3 so that the transport tray 3 can move forward or backward while being in contact with the guide rails (4a, 4b) of the loader portion 4. It slides on the rails (4a, 4b).

Further, as shown in FIG. 5A, guide rails 4a and guide rails 4b are provided on the left and right sides of the upper surface side of the loader unit 4, respectively. The guide rail 4a and the guide rail 4b are portions that form a groove portion provided in the front-rear direction, and include a flat surface on which the guide portion (3e to 3h) of the transport tray 3 can slide in the front-rear direction at the bottom of the groove portion. .. Specifically, the guide portions 3e and 3f of the transport tray 3 and the two first bosses 3i and the second boss 3j are slidably arranged on the guide rails 4a arranged on one side in the left-right direction. Rail. Further, the guide portions 3g and 3h of the transport tray 3 are slidably arranged on the guide rail 4b arranged on the other side in the left-right direction.

As shown in the partially enlarged views of FIGS. 5A and 5B to 5D, the guide rail 4a has a first groove portion 4c in which the width of the groove portion is narrowed at the rearmost side and a distance X from the first groove portion 4c to the front side. A second groove portion 4d in which the width of the groove portion is narrowed at a position separated by a small amount, and a third groove portion 4e in which the width of the groove portion is narrowed at a position further separated from the second groove portion 4d by a distance Y are formed. The widths of the first groove portion 4c, the second groove portion 4d, and the third groove portion 4e are adjusted to be substantially the same as or slightly larger than the columnar diameters of the first boss 3i and the second boss 3j.

That is, the rearmost first groove portion 4c is a portion whose width is narrowed so that the first boss 3i of the transport tray 3 is engaged in the closed state. Further, the second groove portion 4d located in the middle is a portion whose width is narrowed so that the first boss 3i of the transport tray 3 is engaged in the open state. Further, the frontmost third groove portion 4e is a portion whose width is narrowed so that the second boss 3j of the transport tray 3 is engaged in the open state. When the narrowed groove portion of the guide rail 4a is engaged with the first boss 3i or the second boss 3j, the transport tray 3 that moves in the front-rear direction with respect to the loader portion 4 can be positioned.

6A, 6B, 7A and 7B are diagrams for explaining the case where the transport tray 3 is housed in the disc playback device 10 in the closed state. 8 and 9A and 9B are diagrams for explaining the case where the transport tray 3 is ejected in the open state. 6A and 8 are cross-sectional views of the disc playback device 10 as viewed from the side, and FIG. 6B is a partially enlarged cross-sectional view of FIG. 6A. 7A and 9A are plan views of the disc playback device 10 as viewed from above, and the front panel 1 and the housing 5 are not shown. 7B, 7C, 9B, and 9C are cross-sectional views in which a portion hidden under the transport tray 3 in FIGS. 7A and 9A is partially transparently viewed and enlarged.

In the closed state of the disc playback device 10, the front end side of the transport tray 3 has convex portions 2a and 2b provided on the left and right ends of the tray panel 2 and projecting to the rear side, as shown in FIGS. 6A and 6B, and the front end side. The recesses 1b or recesses 1c provided around the opening 1a of the panel 1 are engaged with each other to be positioned and the stationary position is determined. The recess 1c on the right side is an oval hole long in the left-right direction and is formed slightly larger than the recess 1b on the left side, which is a circular hole, so that the front end side of the transport tray 3 can be positioned accurately. Moreover, even if the molding dimensions of the front panel 1 or the tray panel 2 fluctuate within the tolerance range, a problem occurs in which the tray panel 2 collides with the periphery of the opening 1a of the front panel 1 and is loaded and stacked. do not do.

Further, in the closed state of the disc playback device 10, the first boss 3i and the first boss 3i of the transport tray 3 are slidably arranged on the rear end side of the transport tray 3 as shown in FIGS. 7A and 7B. The lateral direction is positioned by engaging with the first groove portion 4c in which the width of the groove portion is narrowed at the rearmost side of the guide rail 4a. The vertical direction is positioned by the guide portion 3e provided near the first boss 3i and the hook portion 3a that sandwiches the guide rail 4a.

Further, in the closed state of the disc playback device 10, as shown in FIG. 7C, the width of the groove portion is intermediate between the second boss 3j of the transport tray 3 and the guide rail 4a in which the second boss 3j is slidably arranged. The second groove portion 4d, which becomes narrower, is arranged so as not to engage with each other. This is because the two first bosses 3i and the second boss 3 are arranged so as to be separated by a distance Y longer than the moving distance X of the transport tray 3. As a result, in the closed state of the disc playback device 10, the front end side (convex portion 2a and concave portion 1b, convex portion 2b and concave portion 1c) and the rear end side (first boss 3i and first groove portion 4c) of the transport tray 3 are two. Since the locations are positioned, it is not necessary to provide a third positioning that requires extremely high assembly accuracy.

In the open state of the disc playback device 10, the transport tray 3 advances forward by a distance X, so that the front end side of the transport tray 3 projects forward from the opening 1a of the front panel 1 to push the tray panel 2 forward, as shown in FIG. Cannot be directly supported and positioned. Therefore, in the open state, as shown in FIGS. 9A and 9C, the width of the groove portion becomes narrower on the frontmost side of the guide rail 4a in which the second boss 3j of the transport tray 3 and the second boss 3j are slidably arranged. The left-right direction is positioned by engaging with the third groove portion 4e. In the vertical direction, the guide portion 3f provided near the second boss 3j and the hook portion 3b sandwiching the guide rail 4a are positioned.

Further, in the open state of the disc playback device 10, the first boss 3i and the first boss 3i of the transport tray 3 are slidably arranged on the rear end side of the transport tray 3 as shown in FIGS. 9A and 9B. The lateral direction is positioned by engaging with the second groove portion 4d in which the width of the groove portion is narrowed in the middle of the guide rail 4a. The vertical direction is positioned by the guide portion 3e provided near the first boss 3i and the hook portion 3a that sandwiches the guide rail 4a. That is, even when the disc playback device 10 is opened, the front end side (second boss 3j and third groove portion 4e) and the rear end side (first boss 3i and second groove portion 4d) of the transport tray 3 are positioned. It is not necessary to provide a third positioning that requires extremely high assembly accuracy.

In the disc playback device 10 of this embodiment, the transfer tray 3 can be positioned at two locations in the front-rear direction without providing a third positioning that requires extremely high assembly accuracy, regardless of whether it is in the closed state or the open state. It has the advantage of being able to be assembled accurately at low cost.

Further, as described above, the transport tray 3 advances in a state where at least the same four of the plurality of guide portions (3e to 3h) and the plurality of hook portions (3a to 3d) are in contact with the guide rails 4a or 4b. Or retreat. Specifically, only the guide portions 3e and 3f that slide with respect to the bottom surface of the guide rail 4a and the guide portions 3g and 3h that slide with respect to the bottom surface of the guide rail 4b are in sliding contact with each other. , The contacting portion does not change until the movement of the transport tray 3 is stopped. Therefore, this structure can suppress the behavior of the transport tray 3 swinging or swinging like a seesaw, the unloading operation / loading operation can be smoothed, and high operation quality can be realized. ..

In this embodiment, the first groove portion 4c, the second groove portion 4d, and the third groove portion 4e are provided only on one of the guide rails 4a, but the first groove portion 3h and the third groove portion 4e correspond to each other in the immediate vicinity. If the boss 3i and the second boss 3j are provided on the transport tray 3, the other guide rail 4b may be provided with the corresponding first groove portion 4c, the second groove portion 4d, and the third groove portion 4e. Good.

The present invention is not limited to the above examples. The guide portion of the transport tray 3 and the guide rail of the loader portion 4 may be formed at positions close to the center in the left-right direction of the substrates. Further, the tray panel 2 and the transport tray 3 may be integrally formed.

The recording medium loading device of the present invention can be applied not only to the disc playback device 10 that records / reproduces a video signal or an audio signal, but also to a recording medium loading device of other audio-visual equipment or equipment such as a computer. ..

1 Front panel 1a Opening 1b, 1c Recessed 2 Tray panel 2a, 2b Convex part 3 Conveying tray 3a to 3d Hook part 3e to 3h Guide part 3i to 3j Boss 4 Loader part 4a Guide rail 4c to 4e Groove part 5 Housing 10 Disc playback apparatus

Claims (4)

A transport tray on which a recording medium is placed, a loader portion for moving the transport tray forward or backward along a guide rail slidably engaged with a plurality of guide portions of the transport tray, and a loader portion are attached. A recording medium loading device comprising a housing having at least a panel member that defines an opening in which the transport tray enters and exits.
A tray panel in which the transport tray engages with the panel member in a closed state to close the opening, and a first boss movably provided along the guide rail at a position distant from the tray panel to the rear side. And a second boss provided on the front side so as to be movable along the guide rail at a distance Y longer than the movable distance X of the transport tray from the first boss.
The guide rail of the loader portion is provided at a distance X from the first groove portion to the front side of the first groove portion whose width is narrowed so that the first boss of the transport tray is engaged in the closed state. A second groove portion whose width is narrowed so that the first boss of the transport tray is engaged in the open state, and a second groove portion which is provided on the front side from the second groove portion at a distance Y at a distance Y and the transport in the open state It has a third groove that narrows in width so that the second boss of the tray engages.
Recording medium loading device. The tray panel of the transport tray has a convex portion protruding rearward, and the panel member of the housing has a concave portion around the opening to which the convex portion engages in the closed state.
The recording medium loading device according to claim 1. The transport tray further has a plurality of hook portions for sandwiching the guide rail between the plurality of guide portions, and at least the same four of the plurality of guide portions and the plurality of hook portions are the guide rails. The transport tray moves forward or backward while in contact with the rail.
The recording medium loading device according to claim 2. An electronic device or an audio-visual device including the recording medium loading device according to any one of claims 1 to 3.