JP2002298569A - Disk recording/reproduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk recording/reproduction device in which ground connection for discharge of a supporting plate, etc., of a cleaning member can be facilitated without limiting the installation area of an electrical circuit board in the vicinity of a medium insertion opening. SOLUTION: This disk recording/reproduction device is provided with the medium insertion opening 11 where a disk-shaped recording medium is inserted, the cleaning member 21 for cleaning the recording medium inserted from the medium insertion opening 11, a display unit 30 for displaying at least either an image or characters, a case 31 made of conductive materials covering the display unit 30 and a conductive supporting member 24 for supporting the cleaning member 21. The supporting member 24 discharges static electricity that is positively charged to the cleaning member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus capable of reproducing information recorded on a disk-shaped recording medium (hereinafter referred to as "disk recording / reproducing"), and more particularly to a disk recording / reproducing apparatus suitable for a car audio system and a navigation system.

[0002]

2. Description of the Related Art In a disk recording / reproducing apparatus used for a car audio system, a navigation system, or the like, dust attached to a disk (disk-shaped recording medium) or dust floating in a vehicle cabin is prevented from entering a drive. And
In some cases, a felt-shaped cleaning member (hereinafter referred to as dust felt) is provided at a medium insertion port to clean a disk.

[0003] This dust felt has a slit for inserting a disk near the center of a medium insertion slot, and when the disk passes through the medium insertion slot, a flexible sheet for removing dust adhering to the disk by a so-called wiping action. It is formed as. When the disk does not pass, the medium insertion opening is closed with dust felt, and when the disk passes, the dust felt is generally supported by a holding plate having a leaf spring function so as to obtain the wiping action.

Usually, this metal pressing plate is fixed to the back of a plastic front cover forming a medium insertion slot. However, when a user performs a disc reproducing operation, the disc is charged with static electricity. The holding plate is charged, and discharge from the holding plate may adversely affect the electric circuit board inside the drive. For example, due to the influence of the discharge, an error occurs in recording / reproducing to / from the disk, or a malfunction occurs.

Therefore, conventionally, a conductive wire for connecting the pressing plate of the cleaning member to a fixed metal portion or the like at the same potential level as the ground potential of the electric circuit board in the drive is provided, and the pressing plate is connected to the conductive wire and the fixed metal. The device is grounded through a portion or the like.

[0006]

However, in the above-mentioned conventional disk recording / reproducing apparatus, the pressing plate of the dust felt is connected to the fixed metal portion at the ground potential level of the electric circuit board by the conductive wire. In spite of the denseness of the electrical components around the medium insertion slot, it is necessary to separate the electric circuit board from the connection portion by the conductive wire, which not only reduces the installation area of the electric circuit board, but also reduces the electric circuit. There is a problem that the degree of freedom in designing a substrate is also limited.

Accordingly, the present invention provides a disk recording / reproducing apparatus capable of facilitating the connection of a discharge ground to a support plate or the like of a cleaning member without restricting an installation range of an electric circuit board near a medium insertion port. It is the purpose.

[0008]

In order to solve the above-mentioned problems, a disk recording / reproducing apparatus according to the present invention comprises a medium insertion slot into which a disk-shaped recording medium is inserted, and a recording medium inserted through the medium insertion slot. A cleaning member for cleaning, a display unit for displaying at least one of an image and characters, a case made of a conductive material covering the display unit, and a conductive support member for supporting the cleaning member, The support member discharges static electricity charged to the cleaning member via the case.

In this disk recording / reproducing apparatus, the case of the display unit near the medium insertion slot is made of a conductive material, and the conductive support member of the cleaning member is discharged through this case. There is no need to limit the installation range of the electric circuit board for ground connection, and it is not necessary to add a dedicated discharge component. In the area where the medium insertion slot and the case of the display unit are close to each other, there is usually no electric circuit board and there is a slight gap,
Such a ground connection is possible.

In the above disk recording / reproducing apparatus, the display unit can be connected to a display element for performing a predetermined display through an opening formed in the case and an electric circuit board including a display drive circuit. A holder for holding the first protrusion, the first protrusion protruding outward toward the medium insertion opening and forming a recess inside, and the holder is provided with a second protrusion that can be housed in the recess. It is preferable that a protrusion is provided, and a direction in which the case and the holder can be fitted is regulated in one direction by the first protrusion and the second protrusion. In this configuration, since the unevenness of the case for ground connection is used to regulate the direction of fitting with the holder, it is possible to reliably prevent the case from being assembled in the wrong direction.

A disk recording / reproducing apparatus according to the present invention comprises a medium insertion opening into which a disk-shaped recording medium is inserted, a cleaning member for cleaning the recording medium inserted from the medium insertion opening, and a conductive member for supporting the cleaning member. And a sheet metal frame that supports an exterior cover formed with the medium insertion port in the vicinity of the medium insertion port, a part of the sheet metal frame abuts on the support member, and the support member is And discharging static electricity charged on the cleaning member through the sheet metal frame.

In this disk recording / reproducing apparatus, since the conductive support member of the cleaning member is discharged through the sheet metal frame near the medium insertion slot, the installation range of the electric circuit board is set to connect the discharge ground. There is no limitation, and there is no need to add dedicated components for discharging. There is no electric circuit board in the area where the media insertion port and the sheet metal frame are close to each other (usually around the media insertion port).
The slight gap allows such a ground connection.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1)

FIGS. 1 to 5 show an embodiment of a disk recording / reproducing apparatus according to the present invention. The present invention is applied to a disk recording / reproducing apparatus of an electronic device having a navigation function and an audio function for a vehicle. FIG.

[0015] The disk recording / reproducing apparatus of this embodiment comprises:
For example, it is a device capable of reproducing a disc-shaped recording medium such as a CD (compact disc), a DVD (Digital Video Disc), and an MD (mini-disc). As shown in FIGS. In the escutcheon cover 10, medium insertion ports 11 and 12 for inserting and discharging a disk-shaped recording medium are formed.
Among these, a CD is inserted into the medium insertion slot 11 and an MD is inserted into the medium insertion slot 12.

A flexible dust felt 21 serving as a cleaning member is provided inside the medium insertion slot 11, and a CD or DVD (not shown) passing through the medium insertion slot 11.
The surface of the disc (hereinafter, simply referred to as a disc) is cleaned by the dust felt 21.

As shown in FIG. 3, the dust felt 21 has a slit 22 for inserting a disk which extends horizontally at the center of the medium insertion slot 11, and short vertical slits 23a and 23b contacting both ends thereof. I have. The outer periphery of the dust felt 21 is supported from the back side by a pressing plate 24 (support member) made of a conductive metal plate.

As shown in FIG. 4, the holding plate 24 has a horizontally long opening 24a corresponding to the medium insertion slot 11, and the disk passing through the opening 24a in the medium insertion slot 11 is provided with a slit of the dust felt 21. The cleaning is carried out while pushing and spreading the 22 slightly up and down.

A shutter 26 whose upper part is rotatably supported by the escutcheon cover 10 and which opens and closes in the front-rear direction is mounted on the medium insertion opening 12. The shutter 26 is an elastic member (not shown) (for example, a torsion spring)
Is always biased in the closing direction.

On the other hand, a display unit 30 that performs a screen display operation near the medium insertion port 11 is provided between the upper medium insertion port 11 and the lower medium insertion port 12.

The display unit 30 includes a case 31 made of a predetermined conductive material, a liquid crystal display element 32 for performing a predetermined display through an opening 31a formed in the case 31, and a plurality of lead terminals 32a. 33 that holds the liquid crystal display element 32 having the display driving circuit and the liquid crystal display element 32b connectable to an electric circuit board 40 (see FIG. 1) including the display driving circuit.
And a light guide plate 34 constituting a backlight of the liquid crystal display element 32.

The case 31 has a first projection 31 projecting outward at a predetermined height toward the medium insertion opening 11 and forming a cutout recess 31b (see FIG. 5) inside.
c is provided. The holder 33 is provided with a second protruding portion 33a housed in the concave portion 31b inside the case 31. The first projections 3 of these cases 31
When the second projection 1a and the second projection 33a of the holder 33 overlap as shown in FIG. 5 and the second projection 33a of the holder 33 is stored in the cutout recess 31b of the case 31, the case 31 and the holder 33 Can be completely fitted,
The second protrusion 33a of the holder 33 does not enter the case 31 for fitting in other directions, so that the case 31 cannot be assembled. That is, the fitting of the case 31 and the holder 33 is restricted only in one direction in which the first projection 31c and the second projection 33a overlap.

The first projection 31c of the case 31
Lower end bent portion 24a of holding plate 24 of dust felt 21
At a predetermined contact pressure, and the holding plate 24 and the case 31 are electrically connected. Further, the case 31 is provided with a fitting portion 31 d fitted into the electric circuit board 40. The insertion portion 31d is electrically connected to a ground potential portion of the electric circuit board 40 or a fixed metal portion having the same potential level as the ground potential portion. That is, the conductive pressing plate 24 supporting the dust felt 21
The display unit 30 is grounded via a case 31 to prevent charging due to static electricity.

Next, the operation of the disk recording / reproducing apparatus will be described.

In the disk recording / reproducing apparatus of this embodiment configured as described above, the disk is
When the disc is inserted into the disc 1, dust adhering to the disc passing therethrough is removed by a so-called wiping action of the flexible dust felt 21, and the disc is cleaned.

At this time, the conductive dust felt holding plate 24 is inserted through the case 31 because it is grounded so as to be at the same potential level as the installation potential portion or the ground potential portion of the electric circuit board 40. Even when the disk is charged with static electricity, the static electricity can be discharged to the ground potential portion of the electric circuit board 40 or the frame of the same potential level via the holding plate 24, and the holding plate 24 prevents static electricity. Can be achieved. Also, the case 31 is similarly maintained at the same potential level as the ground potential portion of the electric circuit board 40, so that the case 31 can be prevented from being charged. As a result, it is possible to prevent an error from occurring in recording and reproduction on the disk and a malfunction from occurring.

The medium insertion slot 11 and the display unit 30
Although there is no electric circuit board in the area close to the case 31, there is a slight vertical gap there, so that the above-mentioned ground connection is possible. There is no need to limit the installation range and no need to add dedicated parts for ground connection.

Further, since the irregularities formed on the case 31 for ground connection are also used for regulating the direction of fitting with the holder 33, for example, the case 31 with the first projection 31c facing downward is Holder 3 with 33a facing up
3 can be reliably prevented from being mounted in the wrong direction.

As described above, in this embodiment, the disk for easily connecting the dust felt holding plate 24 to the ground without restricting the installation range of the electric circuit board 40 in the vicinity of the medium insertion slot 11. It becomes a recording and reproducing device. (Embodiment 2)

FIGS. 6 to 8 show another embodiment of the disk recording / reproducing apparatus according to the present invention, and exemplify a case where the present invention is applied to a disk recording / reproducing apparatus of a vehicle-mounted electronic device. I have.

The disk recording / reproducing apparatus of the present embodiment is thinner (has a lower height) as compared with the first embodiment.
If, for example, the first embodiment is 2DIN (German Industrial Standard) size, this embodiment is 1DIN size. As shown in FIG. 6, a display unit 30 is provided below the medium insertion slot 11, but there is no mini disc insertion slot or the like. However, the present embodiment also includes substantially the same components as those in the above-described embodiment, and therefore, differences from the above-described embodiment will be described below.

In this embodiment, a front plate 51 is provided for supporting an unillustrated escutcheon cover from the rear side and attaching it to a drive chassis (not shown). The front plate 51 is formed by pressing a sheet metal, and is provided near the medium insertion port 11.

On a part of the front plate 51, particularly a portion near the periphery of the medium insertion slot 11, a plurality of projections bent rearward so as to contact the conductive pressing plate 24 and projecting in the direction. Parts 51a and 51b are provided. Then, the conductive holding plate 24 supporting the dust felt 21 abuts on these protrusions 51 a and 51 b, whereby a ground connection for discharge is made via the front plate 51.

Other configurations are the same as those of the above-described embodiment.

In the present embodiment, the holding plate 24, which is a conductive support member, is grounded via the front plate 51, which is a sheet metal frame near the medium insertion slot 11, to discharge the dust felt 21. Become. In this case, the electric circuit board 40 opened to avoid the medium insertion ports 11 and 12
In contrast, a plurality of projections 51a, 51
By arranging “b” around the medium insertion port 11, the installation range of the electric circuit board 40 is not limited, and
There is no need to add special parts for ground connection. In addition, there is no electric circuit board in the area where the medium insertion port 11 and the front plate 51 are close to each other (normally, the periphery of the medium insertion port 11), but there is a slight gap, so that the above-mentioned ground connection is easily performed. be able to.

In the above-described embodiment, the cleaning member is a dust felt made of a single sheet material. However, the cleaning member may be divided into a plurality of parts, for example, divided into upper and lower parts. In this case, it is conceivable that each of the two divided bodies of the cleaning member is supported by a pivotable open / close shutter.

[0037]

According to the present invention, since the conductive support member of the cleaning member is grounded via the conductive display unit case or the like close to the medium insertion port, the installation range of the electric circuit board is limited. The grounding of the support member can be performed without adding a dedicated component. As a result, a disk recording / reproducing apparatus which can reliably prevent an error or a malfunction from occurring in recording / reproducing to / from a disk-shaped recording medium due to static electricity and can also increase the degree of freedom in designing an electric circuit board. Can be provided.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a main part of a disk recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a side cross-sectional view of a front portion of an in-vehicle electronic device including a disk recording / reproducing device according to an embodiment of the present invention.

FIG. 3 is an exemplary front view of an in-vehicle electronic device including the disk recording / reproducing device according to the embodiment of the present invention;

FIG. 4 is a front view of a disk recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 5 is a top view of a display unit case in the disk recording / reproducing apparatus according to one embodiment of the present invention.

FIG. 6 is an essential part front view showing a disk recording / reproducing apparatus according to another embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6, showing a disk recording / reproducing apparatus according to another embodiment of the present invention.

FIG. 8 is a side sectional view showing a main part of a disk recording / reproducing apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Escution cover 11, 12 Medium insertion opening 21 Dust felt 22 Slit for inserting a disk 23a, 23b Slit 24 Pressing plate (supporting member) 26 Shutter 30 Display unit 31 Case (conductive case) 31a Opening 32 Liquid crystal display element 32a , 32b Lead terminal 40 Electric circuit board 33 Holder 34 Light guide plate 33a Second protrusion

Claims (3)

[Claims] 1. A medium insertion slot into which a disc-shaped recording medium is inserted, a cleaning member for cleaning the recording medium inserted from the medium insertion port, a display unit for displaying at least one of an image and characters, A case made of a conductive material that covers the display unit; and a conductive support member that supports the cleaning member. The support member discharges static electricity charged to the cleaning member via the case. A disk recording / reproducing apparatus characterized in that the recording / reproducing apparatus comprises: 2. The display unit according to claim 1, further comprising: a display element for performing a predetermined display through an opening formed in the case; and a holder for holding the display element so as to be connectable to an electric circuit board including a display drive circuit. Wherein the case has a first protrusion protruding outward toward the medium insertion port and has a recess formed therein, and the holder has a second protrusion which can be housed in the recess, The direction in which the case and the holder can be fitted,
2. The disk recording / reproducing apparatus according to claim 1, wherein the first protrusion and the second protrusion are regulated in one direction. 3. A medium insertion opening into which a disk-shaped recording medium is inserted, a cleaning member for cleaning the recording medium inserted from the medium insertion opening, a conductive support member for supporting the cleaning member, A sheet metal frame that supports an exterior cover formed with the medium insertion port, in the vicinity of the medium insertion port, a part of the sheet metal frame abuts on the support member, and the support member is provided via the sheet metal frame. A disc recording / reproducing apparatus for discharging static electricity charged to the cleaning member.