BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to protection devices for optical recording/reproducing apparatuses, and more particularly to a protection device for preventing damage being caused by a broken disc inside an optical recording/reproducing apparatus.
2. Description of the Prior Art
An optical recording/reproducing apparatus has become a standard feature of a personal computer system, for recording information and/or playing music and/or video recordings. A typical optical recording/reproducing apparatus can be used with media such as CD-ROMs (Compact Disc Read Only Memories), CD-RWs (Compact Disc Rewritables), and DVD-ROMs (Digital Disc Read Only Memories).
The fast development of information technology has helped to greatly advance the technology of optical recording/reproducing apparatuses. One important development has been the significant increase in the speed at which an optical disc in an optical recording/reproducing apparatus rotates. In FIG. 6, a schematic, cross-sectional view of part of a conventional optical recording/reproducing apparatus is shown. An optical disc 100 is held in a disc tray 200. A front edge of an upper cover 300 is directly engaged in a groove defined in a back of a front panel 400. A tray panel 500 is located in a tray opening 600. One drawback of the optical recording/reproducing apparatus is that it can be dangerous in certain circumstances. The optical disc 100 rotates at high speed, and if the optical disc 100 is of inferior quality, it is liable to break into pieces. The pieces may fly directly out through a clearance between a lower surface 620 of the tray opening 600 and an upper surface 520 of the tray panel 500, and may damage the tray panel 500 and the front panel 400.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a simple and reliable protection device for an optical recording/reproducing apparatus.
In order to achieve the object set out above, a protection device for an optical recording/reproducing apparatus of the present invention comprises a blocking strip. The optical recording/reproducing apparatus comprises a frame having two side beams. The blocking strip is set between two side beams of the frame. The blocking strip prevents debris of an optical disc from flying out from the optical recording/reproducing apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
FIG. 1 is an exploded, isometric view of a protection device for an optical recording/reproducing apparatus in accordance with a first embodiment of the present invention;
FIG. 2 is an exploded, isometric view of a protection device for an optical recording/reproducing apparatus in accordance with a second embodiment of the present invention;
FIG. 3 is an exploded, isometric view of a protection device for an optical recording/reproducing apparatus in accordance with a third embodiment of the present invention;
FIG. 4 is an exploded, isometric view of a protection device for an optical recording/reproducing apparatus in accordance with a fourth embodiment of the present invention;
FIG. 5 is an enlarged, cross-sectional view of part of the protection device of FIG. 1 assembled and applied in an optical recording/reproducing apparatus, the view corresponding to line V-V of FIG. 1, and also showing part of an optical disc; and
FIG. 6 is a schematic, cross-sectional view of part of a conventional optical recording/reproducing apparatus, also showing part of an optical disc.
DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made to the drawing figures to describe the preferred embodiment of the present invention in detail.
FIG. 1 shows a protection device 1 for an optical recording/reproducing apparatus in accordance with the first embodiment of the present invention. The protection device 1 comprises an upper cover 10, a frame 20, a front panel 30, and a lower cover 40. The frame 20 is sealed in a space cooperatively formed by the upper cover 10, the front panel 30, and the lower cover 40. The space is used to receive operational components of the optical recording/reproducing apparatus including a tray for accepting optical discs therein, a spindle motor, a transmitting device and a pickup module, etc.
The upper cover 10 comprises a horizontal top cover 12, and two side walls 14 extending vertically down from the top cover 12. A sealing strip 120 with a first clasping hole 122 in a middle thereof extends forwardly from the top cover 12. A pair of second clasping holes 142 is defined in front portions of the side walls 14 respectively.
The frame 20 comprises a front beam 22 and two parallel side beams 24. The front beam 22 interconnects the side beams 24 at a height approximately midway along heights of the side beams 24. A blocking strip 26a interconnects front upper corners of the side beams 24. A lower surface of the blocking strip 26a is a little higher than a top surface 62 of a disc tray 60 (shown in FIG. 5).
Referring also to FIG. 5, the front panel 30 comprises a rectangular tray opening 32 for allowing the disc tray 60 to slide in and out from the frame 20, an upper beam 34 bordering a top of the tray opening 32, a horizontal insertion groove 36 in a rear of the upper beam 34, a hook 362 in a middle portion of the insertion groove 36, and three arms 38. The arms 38 extend rearwardly from two opposite sides and a bottom of the front panel 30 respectively. A wedged hook 382 is formed at a distal end of each arm 38. A third clasping hole 420 is defined in a front central portion of the lower cover 40, corresponding to a middle one of the arms 38 of the front panel 30.
Now referring to FIGS. 2, 3 and 4, the second, third and fourth embodiments of the protection device 1 of the present invention are shown. Unlike the blocking strip 26a of the first embodiment, the second, third and fourth embodiments respectively have blocking strips 26b, 26c, and 26d which are formed separately from the frame 20.
As shown in FIG. 2, in the second embodiment, two mounting arms 260 extend rearwardly from opposite ends of the blocking strip 26b respectively. Each mounting arm 260 has a claw 262 at a distal end thereof. A pair of clasping grooves 242 is defined in the side beams 24 of the frame 20 respectively, for engagingly receiving the claws 262. Thus the blocking strip 26b can be fixed to the frame 20.
As shown in FIG. 3, in the third embodiment, instead of having the claws 262 of the second embodiment, a pair of threaded holes 264 is defined in the distal ends of the mounting arms 260 respectively. Instead of having the clasping grooves 242 of the second embodiment, a pair of mounting holes 244 is defined in the side beams 24 respectively, corresponding to the threaded holes 264. Two threaded bolts 50 are extended through the mounting holes 244 and engaged in the threaded holes 264, in order to fix the blocking strip 26c to the frame 20.
As shown in FIG. 4, in the fourth embodiment, the blocking strip 26d has no mounting arms 260. A pair of vertical mounting slots 246 is defined in inner surfaces of the side beams 24 respectively. Each mounting slot 246 is open at a top end thereof. Opposite ends of the blocking strip 26d are inserted into the mounting slots 246, in order to fix the blocking strip 26d to the frame 20.
Other parts of the second, third and fourth embodiments of the protection device 1 are similar to corresponding parts of the first embodiment as described above.
In assembly of the protection device 1 of the first through fourth embodiments, in the case of the second through fourth embodiments, the blocking strip 26b, 26c, 26d is fixed to the frame 20. Then, in the case of all the embodiments, the procedure is as follows. The upper cover 10 is attached onto the frame 20. The lower cover 40 is attached onto the frame 20. Lastly, the front panel 30 is attached to the upper cover 10 and the lower cover 40. In this process, the sealing strip 120 of the upper cover 10 is received in the insertion groove 63, with the hook 362 engaging in the first clasping hole 122 of the sealing strip 120. At the same time, the second clasping holes 142 of the side walls 14 and the third clasping hole 420 of the lower cover 40 engagingly receive the wedged hooks 382 of the arms 38 of the front panel 30.
Also referring to FIG. 5, when the protection device 1 is installed in an optical recording/reproducing apparatus, an optical disc 70 is loaded in a disc tray 60. If the optical disc 70 breaks into pieces, the pieces are blocked by the blocking strip 26a from reaching the front panel 30 or a tray panel 50. Further, four sides of the front panel 30 are fixed to the upper cover 10, frame 20 and lower cover 40. Damage or danger caused by flying off of debris is avoided.
Although the present invention has been described with reference to specific embodiments, it should be noted that the described embodiments are not necessarily exclusive, and that various changes and modifications may be made to the described embodiments without departing from the scope of the invention as defined by the appended claims.
Patent Application
20050289573
