Patent ID: 9260884
Filing Date: 2016-02-16
CPC Classification: E05B,Y10T

Claim Text:
1. A lock cylinder capable of changing a key member, comprising: a cylinder housing whereon an upper pin hole set and a replacing opening are formed; a cylinder body movably disposed inside the cylinder housing, a lower pin hole set being formed on the cylinder body; an engaging slot structure formed on the cylinder body; a sliding slot structure formed on the cylinder body and communicating with the engaging slot structure; an upper locking pin set disposed inside the upper pin hole set on the cylinder housing, the upper locking pin set being for engaging the cylinder housing and the cylinder body; a lower locking pin set disposed inside the lower pin hole set, the lower locking pin set being for matching the key member, so as to drive the upper locking pin set to disengage the cylinder body from the cylinder housing; and a clip member engaging with the engaging slot structure and capable of rotating along the slot structure between a first position and a second position, wherein the clip member cooperates with the engaging slot structure when the clip member is at the first position so as to constrain the cylinder body from sliding relative to the cylinder housing, and the clip member aligns with the sliding slot structure when the clip member is rotated to the second position so as to disengage constraint of the cylinder body from the cylinder housing by the clip member, so that the cylinder body is able to slide from the second position to a replacing position for detaching the lower locking pin set via the replacing opening.