Patent ID: 8650919
Filing Date: 2014-02-18
Classification: E05B,Y10T

Abstract:
1. An anti-break lock comprising: a case having a body and a fixing hole defined through the body, two rods respectively extending from two ends of the body and two rings extending radially from the body, an axis of the rings and an axis of the rods being parallel to each other, a space defined between the two rings and at least one anti-break locking unit; said anti-break locking unit comprising a passage in said body which communicates with a first ring of the two rings; an engaging block which is engaged with the first ring, the engaging block having a recess which is located corresponding to the passage and smaller than the passage, a pad is engaged with the recess, the passage is located at an end of the body and a resilient member and a stop pin are received in the passage, the resilient member biases the stop pin which has a first shoulder defined in a first end thereof which faces the resilient member, a second shoulder is defined in a second end of the stop pin and located corresponding to the passage and recess, a contact portion extends from the second shoulder and is located corresponding to the recess; and a room within the body which communicates with the passage, a resilient piece and an engaging member are received in the room, the engaging member is located corresponding to the first shoulder and biased by the resilient piece to contact the stop pin, the contact portion contacts the pad; when the pad is removed from the recess, the stop pin is then pushed by the resilient member to insert the contact portion into the recess, the stop pin is then removed from the room, the engaging member is biased by the resilient piece and passes through a conjunction portion between the passage and the room, the first shoulder of the stop pin is stopped by the engaging member and cannot move to its initial position.