Patent ID: 6396401
Filing Date: 2002-05-28
Classification: G08B

Abstract:
A shoplifting monitoring apparatus comprising:(A) an attachment unit to be attached to an article such that a predetermined attachment surface of the attachment unit faces the article, the attachment unit including: (A1) a switch provided for detecting whether the attachment unit is attached to the article or not, the switch including: (A11) a movable piece biased toward an outside of the attachment surface; and (A12) a contact that is in an open state or a closed state in accordance with a position of the movable piece, the contact being in the closed state when the movable piece is pushed toward an inside of the attachment surface so that the movable piece is located at an inside of a predetermined standard position, the contact being in the open state when the movable piece is located at the predetermined standard position or at an outside of the predetermined standard position; and (A2) a sleeve member having a sleeve portion that surrounds an end portion of the movable piece when the attachment unit is attached to the article, the end portion of the movable piece facing the article when the attachment unit is attached to the article; and (B) an alarm device issuing an alarm based on information detected by the switch; wherein the attachment unit is to be attached to the article such that the movable piece is pushed by the article toward the inside of the attachment surface, and thereby the contact of the switch is in the closed state; each of the sleeve member and the switch is supported such that each of the sleeve member and the switch can move in a direction from the inside toward the outside of the attachment surface and in a reverse direction thereof; the switch moves together with the sleeve member toward the inside of the attachment surface when the sleeve member is pushed toward the inside of the attachment surface; and the alarm device issues the alarm at least when the contact of the switch is in the open state.