Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
  • E05B47/0611—Cylinder locks with electromagnetic control
  • E05B47/0638—Cylinder locks with electromagnetic control by disconnecting the rotor
  • E05B47/0646—Cylinder locks with electromagnetic control by disconnecting the rotor radially
  • E05B47/0649—Cylinder locks with electromagnetic control by disconnecting the rotor radially with a rectilinearly moveable coupling element
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
  • E05B47/0045—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets keys with permanent magnets
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
  • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
  • E05B47/0006—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a non-movable core; with permanent magnet
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C9/00—Individual registration on entry or exit
  • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
  • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
  • G07C9/00722—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with magnetic components, e.g. magnets, magnetic strips, metallic inserts
  • G07C9/0073—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with magnetic components, e.g. magnets, magnetic strips, metallic inserts actuating magnetically controlled switches, e.g. reed relays
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C9/00—Individual registration on entry or exit
  • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
  • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
  • G07C9/00912—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses for safes, strong-rooms, vaults or the like

Definitions

• the present invention relates to locking systems provided with electronic devices able to sense the code of qualified opening keys and, more particularly, is concerned with a mechanically operated lock of the above-mentioned type wherein the member allowing the lock to open is idle with respect to the member operating the closing devices under rest conditions.
• the movement of the opening devices is transmitted only by those using a qualified key through mechanical connecting means operated by the engagement of a magnetic pin which is introduced into suitable holes.
• Such pin is moved by an electromagnetic coil operated upon sensing the right codes.
• the power supply to energize such coil is provided by cells located in the key.
• Closing systems commercially available today can be divided into two great families: locks of the mechanical and electric/electronic types.
• the closing systems of the mechanical-type locks are most used by their high reliability and the reduced cost as well . They need no power supply which certainly would involve installation problems but they only need the energy of those who intend closing and/or opening.
• the existing locks are of different types according to safety which is to obtain.
• a high level of safety can be achieved by the selection among a wide range of locks proposed by manufacturers according to the application even if they have a number of problems .
• the main problems are as follows:
• the user must have a key for each lock, thus increasing encumbrance and weight problems.
• the secrecy about the mechanical codes relies on the honesty of the installer.
• the extremely rigid mechanical systems do not have the typical flexibility of the electronic systems (e.g. interlocking of an opening code with a predetermined time interval) .
• electromechanical device As far as these systems is concerned a further division is needed as the type of an electromechanical device should be distinguished from the type of an electronic device that are both used in the system. As far as the electromechanical devices is concerned, where typically the closing members need electric power supply, technologically different types can be found on the market, namely: - Electric locks using electromagnetic coils that release mechanical devices.
• An opening code can be enabled according to a determined time period.
• Codes to be suppressed can be easily deactivated.
• the cost can also be much higher according to the system selected.
• the use combined with release coils has a poor mechanical stability as the latter are based upon balance systems that can be overturned by vibrations applied to the construction with the result of an uncontrolled release causing the door to open.
• the present invention seeks to overcome all of the problems and troubles of the present systems by providing a lock sensing a code of the last-mentioned type that uses the force of those who turn the key in the lock, having the following characteristics:
• the keyhole into which the key has to be introduced turns idle and only becomes a load bearing member, i.e. it is able to cause the lock to open-close, upon sensing a right code.
• the lock uses a permanent magnet barrel which is moved by an electric coil provided with a ferromagnetic core.
• the power supply provided by the key is minimum as it only should move the magnetic barrel .
• Locks with less than 360° rotation can also be provided, thus further reducing the production cost.
• the control of the codes can be very easily carried out
• the system is extremely versatile and can be used to provide as follows:
• Locks for post-office or safe-deposit boxes Locks for letter-boxes.
• Fig. 1 is a vertical section view of the lock according to the invention
• Fig. 2 is a right-hand side, partially sectioned view of the lock of Fig. 1;
• Fig. 3 is a particular of the electronic key
• Fig. 4 is a perspective view of a lock according to the invention with a rotation of the key less than 360°;
• Fig. 5 is an exploded view of a lock with a rotation greater than 360°, with linear rack shift
• Fig. 6 is a perspective front view of the body of the lock of Fig. 5;
• Fig. 7 is a view in enlarged scale of the pin or barrel of magnetic material forming a mechanical constraint operated upon sensing the code of the key;
• Fig . 8 shows a pin or barrel provided with permanent magnets only at its ends
• Fig. 9 is an exploded view of the electronic key.
• the lock according to the invention consists of a fixed support portion 1, a drive barrel 2 rotating in a cylindrical housing 21 formed in fixed body 1, and a key housing barrel 3 rotating in drive barrel 2.
• Key housing barrel 3 rotates freely in drive barrel 2 which in turn rotates freely in housing 21 formed in fixed body 1.
• a steel ball 9 used for centering drive barrel 2 and fixed body 1 is compressed through a screw 9A by a spring 9C which abuts against the spherical housing 9B formed in drive barrel 2.
• a steel ball 8 used for centering key housing barrel 3 and fixed body 1 is compressed through a screw 8A by a spring 8C which abuts against the spherical housing 8B formed in key housing barrel 3.
• a seal ring 13 ensures that key housing barrel 3 and drive barrel 2 do not come out of fixed body 1.
• a slide through hole 12 is formed in fixed body 1.
• a dead hole 10 is formed in key housing barrel 3.
• the starting position should, however, be the centering position obtained, if necessary, from the alignment position determined by the rotation of key housing barrel 3 which can be felt by the touch because of the release of ball 8 into its housing 8B formed in the same barrel.
• the introduction of key 7 into housing barrel 3 and its rotation causes only the movement of housing barrel 3. If key 7 supplies the lock through its contacts 14 which are connected to contacts 17 of the lock disposed on an insulated block 4 integral with fixed body 1, coil 6 is energized and generates a magnetic field causing permanent magnet barrel 5 to leave its rest position as it is attracted by the ferrous core of the same coil 6 inside hole 12 (Fig. 2) and to be pushed to the opposite direction inside holes 11 and 10, thus making the two barrels 3 and 2 integral with each other.
• Such attraction force is combined with the repulsion force exerted by a second permanent magnet 16 which is positioned on key 7 so as to push away magnetic barrel 5 during the extraction stroke of the key because of its like polarity.
• barrel 5 is compelled to return to the starting position.
• magnet 5 can consist of a central steel body HI and one or more magnetic elements 2H and 3H positioned at both ends to make up for the fragility of the permanent magnet in applications where there is a strong stress .
• a printed board Gl is disposed in the lock and a printed board G2 is disposed in the key, as can be seen in Fig. 4.
• a variety of operating modes can be provided according to applications: - Dwelling places.
• Card G2 is provided with a microcomputer which is programmed with an univocal code in factory. This device is able to generate a signal through a led indicating the capacity of the cell to carry out a minimum number of operations before its replacement or recharge.
• Each key (Fig. 9) is provided with a pushbutton T operated by a pin to change the code in the lock in case any key is lost.
• the microcomputer is able to hold a dialogue with the lock.
• Card Gl is provided with a microcomputer having an
• EEPROM on which the codes of the qualified keys are stored. There is also a driver to actuate the coil.
• the lock is enabled to accept the key codes in factory.
• the first key that is introduced into the keyhole and actuated is the master key.
• the other keys will be introduced one after the other until the last one.
• the programming procedure is terminated by the introduction of the master key again.
• the system is ready to operate.
• the master key will be enabled to change code by the hidden pushbutton T.
• the lock is in the same condition as it was fresh from factory. Therefore, the code programming procedure for old and any new keys can be repeated.

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• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Lock And Its Accessories (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=29765640

Family Applications (1)

Country Status (3)

Families Citing this family (6)

Citations (2)

Family Cites Families (3)

• 2003
  • 2003-01-31 IT IT000042A patent/ITRM20030042A1/it unknown
• 2004
  • 2004-01-30 EP EP04706778A patent/EP1588003A1/en not_active Withdrawn
  • 2004-01-30 WO PCT/IT2004/000033 patent/WO2004067885A1/en active Application Filing

Patent Citations (2)

Non-Patent Citations (1)

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