US 8,146,115 B2Granted

Optical disc drive with resilient member for reducing impact force to optical pick-up unit

AssigneeHon Hai Precision Industry Co., Ltd.

InventorShih-Lung Hsu

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Abstract

An optical disc drive for reducing impact forces in driving an optical pick-up unit is provided. The optical disc drive for driving an optical disc includes an optical pick-up unit, a guide bar, a rack, and a driving unit. The optical pick-up unit is configured for reading data from or writing data to the optical disc. The guide bar penetrates through the optical pick-up unit for supporting the optical pick-up unit. The rack engagably receives a part of the optical pick-up unit. The rack defines a slot therein. The slot extends along a direction substantially parallel with an extending direction of the guide bar. The driving unit is mechanically coupled to the rack. The driving unit drives the rack and the optical pick-up unit to move along a radial direction of the optical disc to track the optical disc.

Claims12

Dependent claims

An optical disc drive for driving an optical disc, comprising:

an optical pick-up unit for reading data from or writing data to the optical disc;
a guide bar for slidably supporting the optical pick-up unit;
a rack comprising:
a first extension member;
a second extension member connected to the first extension member, the second extension member comprising two rings for passing the guide bar through, the two rings being separated at a predetermined interval for receiving a part of the optical pick up unit, the second extension member being resiliently deformed towards the first extension member to reduce a gap formed between the first extension member and the second extension member for absorbing impact forces exerted thereto;
and at least one resilient arm disposed on one side of one ring which faces towards the other ring and being resiliently contacted against a portion of the optical pick-up unit that is received by the rack, wherein the at least one resilient arm is Z shaped;
and
a driving unit mechanically coupled to the first extension member of the rack, the driving unit driving the rack and the optical pick-up unit to move along a radial direction of the optical disc to track the optical disc.

5 more elements

An optical disc drive comprising:

an optical pick-up unit;
a guide bar slidably supporting the optical pick-up unit;
a rack engagably receiving a part of the optical pick-up unit for slidably driving the optical pick-up unit back and forth along the guide bar, the rack comprising:
a first extension member;
and
a second extension member integrally formed with the first extension member, the first extension member and the second extension member defining a slot therebetween, the slot extending in a direction substantially parallel to an extending direction of the guide bar, the slot functioning as a buffer area for absorbing impact forces imparted to the first extension member and the second extension member, the second extension member comprising two rings being separated from each other at a predetermined interval for receiving a part of the optical pick up unit, and at least one resilient member disposed on one side of one ring which faces towards the other ring being subjected to an impact forces exerted substantially along an extension direction of the rack, wherein the first extension member laterally forms a plurality of teeth evenly spaced therewith, the two rings comprise a first ring is formed at an end of the second extension member and a second ring formed adjacent another end of the second extension member, the second ring forms a pair of the resilient members at a side adjacent to the first ring, the at least one resilient member is Z shaped;
and
a driving unit coupled to the rack for driving the rack and the optical pick-up unit to move along the extending direction of the guide bar to track the optical disc.

5 more elements

Dependencies are inferred from the claim text.