Double-security lock and key
The utility model relates to a double-security lock and key. At least a group of cone-shaped springs and magnetic springs are arranged in a lock, concave points and small magnetic sheets which correspond to the springs are arranged on the key corresponding to the cone-shaped springs and the magnetic...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The utility model relates to a double-security lock and key. At least a group of cone-shaped springs and magnetic springs are arranged in a lock, concave points and small magnetic sheets which correspond to the springs are arranged on the key corresponding to the cone-shaped springs and the magnetic springs, a lock care can be provided with a sheet-shaped key inserting hole or a cylindrical key inserting hole, the concave points and the small magnetic sheets are respectively arranged on both side faces or the circular peripheral surface of a sheet-shaped key, and the concave point and the small magnetic sheet can be crosswise arranged. A cylindrical key not only can increase the fastness of a key, but also can possibly reduce the weight of the key. |
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