The assignee for this patent, patent number 8640151, is
Reporters obtained the following quote from the background information supplied by the inventors: "The present invention relates to an optical disk apparatus which suppresses an external shock.
"In recent years, light weighting and thinning in optical disk apparatus have been developed. Particularly, in a thinned optical disk apparatus typically of 12.7 mm or 9.5 mm in thickness and mountable on a note-sized personal computer, external shock may easily cause vibrations to an internal device on which an optical pickup is mounted, so that there is a fear of adversely affecting the performance of the apparatus.
"To solve the problem, for example, there is proposed an optical disk apparatus in which convex rails are aligned laterally on inner surfaces of both right and left sides of a loader chassis at top of which a clamper is provided, concave grooves formed in both surfaces of right and left sides of a tray (drawer) on which the optical disk is mounted are slidably engaged with the convex rails whereby the tray is fit inside of the loader chassis so shat the tray can be inserted into or ejected from the apparatus, and an energizing means for energizing the tray toward the opposite side wall is integrally formed in the inner surface of a side wall of loader chassis to thereby suppress pitching and rolling of the apparatus upon insertion or ejecting of the tray. Refer to, for example, JP-A-2011-18416.
"There is proposed an optical disk apparatus in which when a tray or drawer is at a storage position, a depression spring provided on a side surface of a chassis depresses the tray in a horizontal direction to thereby suppress the vibration of the tray. Refer to, for example, JP-A-2008-117432.
"Referring to, for example, JP-A-2007-226961 there is proposed an optical disk apparatus in which a side pressure projection part is provided at a rear end of a guide rail, and a side pressure reception part is provided in a rear end corner of a tray (drawer), and when the tray is inserted into a casing of a drive, the side pressure projection part depresses the side pressure reception part to thereby lock the drawer.
"Referring to, for example, JP-A-2007-149279 there is proposed an optical disk apparatus comprising a tray and a frame which can reciprocally guide the tray between a disk load and unload position and a disk reproduction position, in which the frame includes an anti-vibration means which engages with the tray loaded at the disk reproduction position to suppress vibrations of the tray."
In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventors' summary information for this patent: "However, the optical disk apparatus described in JP-A-2011-18416 is to suppress pitching and rolling of the apparatus caused when the tray is inserted or ejected, but no consideration is paid to a structure for suppressing a shock imposed upon recording or reproducing information using the optical disk apparatus.
"In the optical disk apparatus described in JP-A-2008-117432 and JP-A-2007-226961, the tray is depressed in a direction perpendicular to an insert/eject direction of the tray to thereby suppress vibrations of the tray, so that when the tray is inserted or ejected, a depressing force is applied in a direction perpendicular to the tray transport direction. As a result, there is a fear of causing a failure to insertion and ejection of the tray.
"In the optical disk apparatus disclosed in JP-A-2007-149279, a pair of ribs provided in a rear wall section of the frame sandwich a rear end edge of the tray or a resilient member is provided at the rear end edge of the tray and is depressed by an engaging rib provided at the rear wall section of the frame to thereby lock the tray to suppress vibrations of the tray. Thus, not only the structure is so much complicated, but also when the tray is ejected a force for sandwiching or depressing the tray is applied to the apparatus, so that there is a fear of failing to eject the tray.
"In view of the above-mentioned problems the present invention has been made. The object of the present invention is to provide an optical disk apparatus which is free from failure to insertion and ejection of a tray, is capable of absorbing any external shock to reduce vibrations of the tray even though the external shock is applied to the apparatus in recording or reproducing information, and is highly reliable.
"To achieve the object the present invention provides an optical disk apparatus for performing at least one of recording and reproduction of information on an information recording surface of a loaded optical disk, which comprises a tray mounting the optical disk, and a casing storing or loading the tray so that the tray may be inserted and ejected, the tray including guide rails which guide movement of the tray in directions of insertion and ejection of the tray on side walls of the tray parallel to the tray insertion and ejection directions, the casing including rail guides formed on sides thereof which oppose to the guide rails of the tray when inserted and for guiding the guide rails of the tray, and a spring member formed against an front end of at least one of the guide rails in the direction of tray insertion, and the spring member providing elastic deformation when a force in the direction of tray insertion is applied to the casing.
"According to the present invention, there is provided an optical disk apparatus which is free from any failure to insertion and ejection of a tray, is capable of absorbing any external shock or collision to reduce vibrations of the tray even though the external shock is applied to the apparatus in recording or reproduction of information, and is highly reliable."
For more information, see this patent:
Keywords for this news article include: Information Technology,
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