WO2006063987A1

WO2006063987A1 - Multimedia appliance comprising a cd drive, and cd drive for a multimedia appliance

Info

Publication number: WO2006063987A1
Application number: PCT/EP2005/056717
Authority: WO
Inventors: Volker Becker; Lothar Vogt
Original assignee: Robert Bosch Gmbh
Priority date: 2004-12-13
Filing date: 2005-12-13
Publication date: 2006-06-22
Also published as: EP1829037A1; DE102005003418A1

Abstract

The invention relates to a multimedia appliance comprising a housing (1) containing a CD drive (22) provided with a loading device (2) that is driven by an electric motor, the loading motor (3), in order to close and open a draw (4) for receiving a CD (5) or to insert or withdraw a CD (5) through a slot in the housing (1), the so-called CD slot (6). Said CD slot (6) can be closed and opened up by means of a front screen (7) which is fixed to the housing (1) in a mobile manner. According to the invention, in order to close and open up the CD slot (6) by means of the front screen (7), a drive connection (8) which is mechanically or magnetically driven by the loading motor (3) is provided for the front screen (7). The invention also relates to a corresponding CD drive with a front screen displacing coupling mechanism.

Description

Multimedia device with a CD drive and CD drive for a multimedia device

The invention relates to a multimedia device with the features mentioned in the preamble of claim 1 and a CD drive with the features mentioned in the preamble of claim 13.

State of the art

The compact disc, hereafter abbreviated to the common name CD for the English term compact disc, is used as a storage medium not only in fixed multimedia devices, such as e.g. CD player, DVD player or PC for recording or playback of data, but also in mobile systems such as car radio with CD player or navigation devices used in vehicles. Thus, modern mobile multimedia devices are equipped with a radio receiver for radio reception, a TV set for television reception, a DVD player for the reproduction of video data, e.g. Movies, a CD player for playing music, an on-board computer and a navigation device equipped. DVD players, CD players and also navigation devices use the CD as a storage medium. For CD players, the so-called audio CD is provided, while DVD players, on-board computers and navigation devices use the Digital Versatile Disc, abbreviated DVD, as a storage medium.

In order to be able to read data from a CD, a CD drive is required in addition to an optical scanning device, which drives the CD drive on a platform. tenteller attached CD rotated. To insert or remove a CD is z. B. a drawer with the CD or the CD itself driven by means of a loader in the housing of the multimedia device or extended out of the housing. This charging device is driven by means of an electric motor, which is referred to as a loading motor.

To protect the inside of the device from dirt and dust, but also for the design of a visually appealing device design is a CD slot through which the drawer or the CD is performed, covered with a front panel, by a pivot drive, by an electric motor, as Swing motor is called, is driven. By using the front panel, the largest possible design surface is achieved in order to have as much space on the front panel as possible for the inclusion of display and control elements.

In addition to this advantage, however, this known arrangement is subject to the first disadvantage that a relatively large amount of parts for the rotary actuator is required to operate the front panel. Because the opening and closing of the front panel must be synchronized with the retraction and extension of the drawer or the CD, also a control of the swing motor is required. In this further required amount of software to control the swing motor is the second disadvantage of the known arrangement justified.

Advantages of the invention

The multimedia device according to the invention, in particular a car radio with CD drive, is distinguished from the known multimedia devices with a front panel in that neither an additional electric motor for moving the front panel in and out, nor a control program or a control unit for synchronizing nization of this electric motor are needed because the charging device is forcibly coupled in an advantageous manner synchronously with the displacement drive of the front panel, ie, the loading motor drives not only the charger, but also the front panel.

This advantage leads to further advantages, which are due to a reduced number of items in a reduction of manufacturing costs, an improvement in quality, a considerable space gain in the housing of the multimedia device and in a very simple, yet very accurate and interference-free synchronization of the charging device show with the displacement drive of the front panel. Accordingly, according to the invention, a single drive has a dual function in that it moves the charging device (drawer or the CD itself) on the one hand and the front diaphragm on the other as a displacement drive, in particular a rotary drive.

In the course of the application is generally referred to by the CD as a disk-shaped storage medium. The term CD is therefore understood not only the audio CD for CD players, but any disc-shaped storage medium, such as the DVD for DVD players, for PC, for notebooks or for navigation devices. Accordingly, the term CD drive also covers all other drives for disc-shaped storage media.

A development of the invention provides that the front panel about an axis for releasing the CD slot by means of the drive connection aufschwenkbar and zuschwenkbar to cover the CD slot is secured to the housing. Alternatively, it can also be provided that the front panel does not pivot, but moves in a different manner and manner to cover or release the CD slot. In this case, also a linear movement in question or a combined movement, the linear movement, pivoting movement and / or arcuate movement - A -

includes. So it is also possible to provide a startup or shutdown of the front panel.

In a further development of the multimedia device according to the invention sits on a driven by the loading motor drive shaft, a first coupling element, for. B. a coupling wheel, with a corresponding second coupling element, for. B. also a clutch, the displacement drive is in particular releasably coupled. This embodiment has the advantage that the drive easily ausbau- from the housing of the multimedia device and can be installed in the housing, because it is easily separable because of the two detachable coupling elements from the displacement drive, in particular rotary actuator, the front panel. The coupling elements may be designed in particular as coupling wheels.

In the front side of a clutch wheel can z. B. be incorporated a recess and sitting on the end face of the other coupling wheel corresponding to a recess projection which is in releasable engagement with the recess. The cross-section of the recess and of the peg-shaped projection is selected such that a rotationally fixed engagement exists. Preferably, the cross section of the recess and the projection is chosen star-shaped.

The drive shaft of the loading motor can also serve directly as the first coupling element; As a second coupling element may be provided a second coupling wheel or a second shaft. In the one wave is z. B. incorporated a recess into which a corresponding pin of the other shaft fits against rotation insertable.

It is advantageous that the loading motor or the loading motor driven by the loading motor is connected by means of a power transmission device or torque transmission device with the front panel, so that upon actuation of the charging device a on the other hand, the CD is loaded or ejected while a shift of the front panel for releasing the CD slot is done or a cover is made from this CD slot. As already mentioned, the power transmission section can act directly on the loading motor or on other parts of the loading device, for example on a reduction gear connected downstream of the loading motor.

Projection and depression are chosen such that there is an axial possibility of insertion into one another, with an anti-twist feature being provided by the respective cross-sectional shape and, accordingly, a torque transfer coupling being present.

As an alternative to a mechanical coupling, the two coupling elements or shafts can also be magnetically coupled.

In particular, the front panel can be pivotally mounted and hinged on an axis on the front side of the housing of the multimedia device in order to release or cover the CD slot. The drive of the front panel, for example, by means of a running over the second clutch wheel belt, in particular or toothed belt, take place, which drives the axis / shaft of the front panel or a seated there driving wheel. Of course, there are other, especially detachable power transmission lines between see the charger drive and the movable front panel conceivable.

The front panel preferably has, in particular on its outside, display and / or operating elements. Consequently, it serves not only for covering or releasing the CD slot, but also as a control panel for the multimedia device. In particular, it may be provided that the front panel has substantially the size of a front end face of the housing of the multimedia device, ie, the space on the front end face is can be optimally used over a large area, so that a large number of display and / or operating elements can be arranged there and no space for the CD slot is lost, since this is behind the front panel when the front panel is in its closed position.

In particular, it can be provided that the multimedia device is designed as a car radio, in particular flip-panel radio. Alternatively, however, it is also possible to provide the training as a stationary stand device, that is, for example, as a component of a stationary stereo system, a computer accessory, a home video system, etc.

For anti-theft protection, the front panel can be removed from the housing. The invention is particularly well suited for a car radio, because due to the normalized installation dimensions in a car radio only limited space for modules is available.

The invention further relates to a CD drive, which is equipped with an access borrowed coupling element for connecting a component. To the coupling element of the CD drive can therefore z. B. a coupling element for driving a front panel of a multimedia device are coupled. The coupling element of the CD drive is driven by the loading device of the multimedia device, so that the coupling element of the CD drive drives the front cover by means of a coupling element of the drive connection of the front cover. For example, as coupling elements clutch wheels with corresponding but not against each other rotatable engaging elements, for. For example, pin and sink, provided. The coupling element is accordingly part of a front diaphragm displacement clutch.

The CD drive according to the invention is distinguished by the advantage that, because of the detachable connection as a result of the coupling Element element is to be installed as an individual part in different multimedia devices, which are equipped with a detachable to the CD drive drive for the front panel, but also in those which are equipped with a separate not coupled with the CD drive drive for the front panel.

Further advantageous embodiments of the invention will become apparent from the claims.

drawings

The invention will be explained in more detail in embodiments with reference to the accompanying drawings. Show it:

1 shows a side view of a multimedia device according to the prior art with cut side wall,

FIG. 2 shows a side view of an embodiment of a multimedia device according to the invention with the side wall cut away,

Figure 3 is a coupling wheel with a recess in plan view and

4 shows a coupling wheel with a projection in plan view.

Description of the Prior Art

In the figure 1, a multimedia device according to the above-described prior art is shown in side view with cut side wall. In a housing 1, a CD drive 22 is arranged, in which a belonging to a loading device 2 drawer 4 are housed with an inserted CD 5 or one of the loading device 2 introduced CD 5. The charging device 2 has an electric charging motor 3, on the drive shaft 10 of which a drive wheel 23 is seated, which is connected by means of a belt 24 to a rolling roller 25 which engages the drawer 4 or the CD 5 through a CD slot 6 formed in the housing 1. and goes out. A front panel 7, on the display and controls 17 are arranged, is pivotally mounted about an axis 9 on the housing 1.

A drive shaft 16 of an electric motor forming a pivot motor 26 drives the axis 9 of the front panel 7 via a belt 27. Synchronous to the extension of the drawer 4 or a CD 5, the swing motor 26 opens the front panel 7 by means of the coupling by the belt 27. The front panel 7 is closed by means of the swing motor 26 synchronously to retract the drawer 4 and a CD 5 again.

On the already enumerated and explained above disadvantages of this known arrangement will not be discussed again at this point.

Description of the embodiments of the invention

FIG. 2 shows an embodiment of a multimedia device according to the invention in a side view when the side wall of the housing is cut open. The multimedia device is designed as a car radio (flip panel radio) with CD drive. In a housing 1, a CD drive 22 is arranged, in which a belonging to a loading device 2 drawer 4 are housed with an inserted CD 5 or one of the loading device introduced CD 5. The charging device 2 has an electric charging motor 3, on the drive shaft 10 of which a drive wheel 23 is seated, which is connected by means of a belt 24 to a rolling roller 25 which engages the drawer 4 or the CD 5 through a CD slot 6 formed in the housing 1. and goes out. A front panel 7, on the display and controls 17 are arranged, is pivotally mounted about an axis 9 on the housing 1.

On the drive shaft 10 sits a wheel-shaped first coupling element 11, which is coupled to a possibly, but not necessarily housing-side mounted, wheel-shaped second coupling element 12. This second coupling element 12 is coupled by means of a belt 15 (in particular toothed belt) with the axis 9 of the front panel 7. Therefore, when the loading motor 3, the drawer 4 and the CD 5 extends automatically due to the coupling via the two coupling elements 11 and 12 and the belt 15, the front panel 7 unfolded exactly synchronized, while they also when retracting the drawer 4 and the CD 5 exactly synchronized is closed again. The coupling element 12, the belt 15 and the axle 9 form a drive connection 8 for the front panel 7.

FIG. 5 shows the first coupling element 11 with a depression 13, preferably a star-shaped cross section.

FIG. 6 shows the second coupling element 12 with a pin-shaped projection 14, which has a star-shaped cross-section corresponding to the recess 13. In the assembled state, the projection 14 of the second coupling element 12 is in the recess 13 of the first coupling element 11. The projection 14 and the recess 13 may also be reversed in the coupling elements 11 and 12. Due to the star-shaped cross section of the recess 13 and the projection 14, the two coupling elements 11 and 12 are not rotated against each other.

The drive shaft 10 of the loading motor 3 or a drive member which is driven by the loading motor 3 via a gear can also serve directly as the first coupling element 11.

Although the invention is suitable in particular for mobile multimedia devices built into vehicles, it is by no means restricted to this application but is equally suitable for stationary devices. As already mentioned, the invention is very well suited for installation in car radios because of their very small footprint.

Claims

claims

A multimedia device comprising a housing (1) in which a CD drive (22) is provided with a loading device (2) driven by an electric motor, the loading motor (3), for receiving a drawer (4) a CD (5) or a CD (5) by a in the housing (1) incorporated slot, the so-called CD slot (6) and extend, the CD slot (6) by means of a housing (1) movably mounted front panel (7) can be covered and released, characterized in that for covering and releasing the CD slot (6) by means of the front panel (7) a drive connection (8) for the front panel (7) is provided which mechanically or magnetically driven by the loading motor (3).

2. Multimedia device according to claim 1, characterized in that the front panel (7) about an axis (9) for releasing the CD slot (6) by means of the drive connection (8) aufschwenkbar and to cover the CD slot (6) zuschwenkbar on Housing (1) is attached.

3. Multimedia device according to one of the preceding claims, characterized in that a drive shaft (10) of the loading motor (3) drives a first coupling element (11) with a second coupling element (12) for driving the front panel (7) in particular solvable communicates.

4. Multimedia device according to one of the preceding claims, characterized in that the loading device (2) drives a first coupling element (11) which is connected to a second coupling element (11). element (12) for driving the front panel (7) in particular releasably connected.

5. multimedia device according to one of the preceding claims, character- ized in that one of the loading motor (3) driven first coupling wheel with a second coupling wheel of the drive connection (8) is in particular releasably connected.

6. Multimedia device according to one of the preceding claims, characterized in that the two coupling elements (11,

12) by means of a recess-or / orsprungsverbindung (recess 13, projection 14) are rotatably coupled together.

7. multimedia device according to one of the preceding claims, character- ized in that the cross sections of the recess (13) and the projection (14) are selected star-shaped.

8. multimedia device according to one of the preceding claims, characterized in that the second coupling element (12) by means of a belt (15) with the axis (9) of the pivotable front panel (7) is coupled.

9. multimedia device according to one of the preceding claims, characterized in that in / on the front panel (7) display and / or controls (17) are provided.

10. Multimedia device according to one of the preceding claims, characterized by the design as a car radio, in particular flip-panel radio.

11. Multimedia device according to one of the preceding claims, characterized by the design as a stationary standalone device.

12. Multimedia device according to one of the preceding claims, characterized in that the front panel has substantially the size of a front end face of the housing (1).

13. CD drive (22) for installation in a multimedia device, in particular according to one or more of the preceding claims 1 to 12, with a CD drive and a loading device (2) driven by an electric motor, the loading motor (3) is to a drawer (4) for receiving a CD (5) or a CD (5) on and extend, characterized by an accessible, by the loading motor (3) driven, can be coupled with a counter-coupling element coupling element (11).

14. CD running value according to claim 13, characterized in that the coupling element (11) is part of a Frontblendenverlagerungs- coupling.