Antitheft device
First Claim
1. An antitheft device comprising a tag (10) for performing a theft preventing function upon an escape from a specified control area, and an attaching member (2) for attaching the tag (10) to a commodity (9), the attaching member (2) comprising a button (22), and a pin (21) projecting from the button (22) and movable into a housing (1) of the tag (10) through a pinhole (12a) formed in the housing (1), the tag housing (1) having arranged therein a clamp member (3) for clamping the pin (21) of the attaching member (2) as moved in through the pinhole (12a), an on-off switch (8) to be depressed by the button (22) of the attaching member (2), and a theft alarm operable under the control of on-off signals from the on-off switch (8), the clamp member (3) having a clamp portion (34) for the pin (21) of the attaching member (2) to be inserted therethrough for clamping the pin (21) unremovably, the clamp member (3) being rotatably supported by a pivot provided inside the housing (1), permitting the clamp portion (34) to be disengaged from the pin (21) when rotated in one direction and being given an elastic repulsive force against the rotation, the housing (1) being provided with an inlet passage (14) for an unclamping probe (7) for pushing the clamp member (3) into rotation toward said one direction, the on-off switch (8) comprising an actuator (82) having an outer end projecting outward from the housing (1) through a hole (12b) formed in the hosuing (1), and a cylindrical guide portion (83) formed around a base end portion of the actuator (82) and providing the pivot for the clamp member (3).
8 Assignments
0 Petitions
Accused Products
Abstract
An antitheft device comprises a tag 10 and a member 2 for attaching the tag to a commodity. The attaching member 2 comprises a button 22 and a pin 21 projecting therefrom. The tag 10 includes a housing 1 having arranged therein a clamp member 3 for clamping the pin 21 of the attaching member 2, an on-off switch 8 to be depressed by the button 22 of the attaching member 2, and a buzzer 6 operable under the control of on-off signals from the switch 8. The clamp member 3 is rotatably supported and disengageable from pin 21 when the clamp member 3 is rotated in one direction. The on-off switch 8 comprises an actuator 82 projecting outward from the housing 1, and a cylindrical guide portion 83 provided around the base end of the actuator 82 and serving as a pivot for supporting the clamp member 3 thereon. The device is adapted to reliably prevent unlawful acts without becoming large-sized.
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Citations
4 Claims
- 1. An antitheft device comprising a tag (10) for performing a theft preventing function upon an escape from a specified control area, and an attaching member (2) for attaching the tag (10) to a commodity (9), the attaching member (2) comprising a button (22), and a pin (21) projecting from the button (22) and movable into a housing (1) of the tag (10) through a pinhole (12a) formed in the housing (1), the tag housing (1) having arranged therein a clamp member (3) for clamping the pin (21) of the attaching member (2) as moved in through the pinhole (12a), an on-off switch (8) to be depressed by the button (22) of the attaching member (2), and a theft alarm operable under the control of on-off signals from the on-off switch (8), the clamp member (3) having a clamp portion (34) for the pin (21) of the attaching member (2) to be inserted therethrough for clamping the pin (21) unremovably, the clamp member (3) being rotatably supported by a pivot provided inside the housing (1), permitting the clamp portion (34) to be disengaged from the pin (21) when rotated in one direction and being given an elastic repulsive force against the rotation, the housing (1) being provided with an inlet passage (14) for an unclamping probe (7) for pushing the clamp member (3) into rotation toward said one direction, the on-off switch (8) comprising an actuator (82) having an outer end projecting outward from the housing (1) through a hole (12b) formed in the hosuing (1), and a cylindrical guide portion (83) formed around a base end portion of the actuator (82) and providing the pivot for the clamp member (3).
Specification