Patent ID: 7869217
Filing Date: 2011-01-11
Classification: H01L

Abstract:
1. A locking device for fastening a first member to a second member, the locking device comprising: a fastener comprising a head portion, a foot portion and a body portion interconnecting the head portion and the foot portion, the foot portion comprising a buckling part extending outwardly from an end of the body portion and a positioning part extending outwardly from the end of the body portion, the buckling part having a length along a direction perpendicular to an axis of the body portion larger than that of the positioning part along a corresponding direction perpendicular to the axis of the body portion, the positioning part having a portion extending toward the head portion to a position above the buckling part; and a spring surrounding the body portion and located between the head portion and the foot portion of the fastener; wherein the fastener is in a locked state to secure the first member with the second member when the spring is compressed between the head portion of the fastener and the first member and the foot portion extends through the first member and the second member and is rotated to make the buckling part abut against the second member, and the fastener is in an unlocked state when the first member can be removed from the second member when the buckling part is rotated and then moved in a direction from the second member toward the first member to exit from the second member; and wherein the positioning part of the foot portion of the fastener has a length along the axis of the body portion larger than that of the buckling part of the foot portion.