JP2011226120A - Electric thumb-turn lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric thumb-turn lock which can temporarily restrict unlocking by members.SOLUTION: A lockout program 16a inhibiting the unlocking by an electric motor is integrated into a control circuit 16 of a microcomputer 8 which drives an electric motor, and an electrostatic switch 12 guiding the lockout program 16a to an operating state and a non-operating state is provided. When a reader 11 reads specific peculiar information to identify a specific person of IC chip in the operating guiding state or the non-operating guiding state, the lockout program 16a is put into the operating state or the non-operating state, by which the unlocking by the members can be temporarily restricted when the lockout program 16a is put into the operating state.

Description

  The present invention relates to an electric thumb turn that operates a thumb turn with an electric actuator.

  In order to improve security performance, the thumb turn that unlocks and unlocks the deadbolt and the electric thumb turn lock that has an electric actuator such as an electric motor that operates the thumb turn are unique to the IC (Integrated Circuit) chip. Provide a reader that reads information, verify the unique information read by the reader, and provide a control device that drives the electric actuator so that only the owner of an IC card or other device with an IC chip can unlock it (For example, see Patent Documents 1 and 2).

  Devices such as an IC card equipped with the IC chip include a contact type that allows the reader to contact the reader to read the unique information and a non-contact type that allows the reader to read the unique information without contacting the reader. The devices described in Patent Documents 1 and 2 use devices such as non-contact type IC cards and mobile phones. The device described in Patent Document 2 can use an IC card used as electronic money, a commuter pass, or the like.

  Since the electric thumb-turn lock using the non-contact type device can be arranged so as not to expose the reader, it is safer against system destruction than that using a contact type device that needs to expose the reader. High and durable. For this reason, in recent years, the number of devices that use a non-contact type device is increasing, including those that are modified from manual thumb-turn locks in addition to new ones. When remodeling a manual thumb turn lock, a handle incorporating a cylinder lock to be unlocked is often used.

  An IC chip mounted on the non-contact type device includes an electronic circuit in which unique information is written, and an antenna element that receives radio waves transmitted from a reader and transmits the unique information written in the electronic circuit. Thus, when a device such as an IC card with an IC chip attached is turned toward the reader, the unique information is read by the reader, and the thumb turn lock is unlocked. As for unlocking, there are two types, one is unlocking a device such as an IC card, and the other is auto-locking, which is automatically locked when the door is closed. Usually, a device such as an IC card is possessed by a plurality of members such as employees and family members who use a building or a room to which an electric thumb turn lock is attached.

JP 2002-364220 A JP 2009-270366 A

  The conventional electric thumb-turn lock described in Patent Documents 1 and 2 can be unlocked at any time by all members who have devices such as IC cards. For this reason, for example, when a company or the like prohibits entry at night or on holidays, the member cannot be unlocked, and there is a problem that hinders confidentiality management. In recent years, there is an increasing demand for temporarily restricting unlocking by members.

  Then, the subject of this invention is providing the electric thumb turn lock which can restrict | limit the unlocking by a member temporarily.

  In order to solve the above-described problems, the present invention provides a thumb turn for unlocking and unlocking a dead bolt, an electric actuator for operating the thumb turn, a reader for reading unique information written on an IC chip, and a reading by the reader. In the electric thumb turn lock provided with a control device for driving the electric actuator so as to be unlocked at least by unlocking the unique information, the control circuit of the control device for driving the electric actuator is connected to the control circuit of the electric actuator. A lockout program for prohibiting lock is incorporated, and an operation induction switch for inducing the lockout program to an operation state and a non-operation induction switch for inducing the lockout program to an operation state are provided, and the operation induction switch is turned on The reader sends specific specific information of the IC chip. The lockout program is activated when it is picked up, and the lockout program is deactivated when the reader reads the specific information with the non-operation induction switch turned on. It was adopted.

  That is, a lockout program for prohibiting unlocking by the electric actuator is incorporated in the control circuit of the control device that drives the electric actuator, and an operation induction switch and a non-operation induction switch for this lockout program are provided. When the reader reads specific specific information of the IC chip with the inductive switch turned on, specific specific information is written as necessary by activating or deactivating the lockout program When the owner of a device equipped with an IC chip sets the lockout program to an active state or an inactive state and sets the lockout program to an active state, unlocking by members can be temporarily restricted.

  By mounting the IC chip on a non-contact type device that does not come into contact with the reader, the safety and durability against system destruction and the like can be improved. As the non-contact type device, a mobile phone or the like can be used in addition to the IC card.

  By making at least one of the operation induction switch and the non-operation induction switch an electrostatic switch that is directed toward the outside of the door and touched, the operation induction switch or non-operation can be performed only by touching the electrostatic switch from the outside of the door. Induction switch can be turned on.

  By using the operation induction switch and the non-operation induction switch as the common electrostatic switch, and when the operation induction switch and the non-operation induction switch are turned on, the patterns touching the electrostatic switch are different from each other. It can be designed compactly by reducing the number of switches.

  The pattern touching the electrostatic switch may be set to the number of touches, the touch time, or a combination of these times and time.

  The electric thumb turn lock according to the present invention incorporates a lockout program for prohibiting unlocking by the electric actuator into the control circuit of the control device that drives the electric actuator, and the operation induction switch and the non-operation induction switch of this lockout program are incorporated. The lockout program is activated or deactivated when the reader reads specific information on the IC chip with the activation induction switch or non-operation induction switch turned on. When the owner of a device equipped with an IC chip in which specific unique information is written makes the lockout program active or inactive, and the lockout program is activated, the member temporarily unlocks it. Can be limited to.

Partially cutaway longitudinal sectional view showing an embodiment of the electric thumb turn lock The perspective view from the outside of the door of FIG. Electrical diagram of the electric thumb turn lock of FIG. Control block diagram of the microcomputer of FIG. (A), (b) is a flowchart when making the lockout program of the control circuit of FIG. 4 into an operation state and a non-operation state, respectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This electric thumb-turn lock is a modified version of a manual thumb-turn lock. As shown in FIGS. 1 and 2, a handle 2 incorporating a cylinder lock 1 and a dead bolt 3 protruding from the front surface of the door A are provided. The drive case 4 attached to the inside of the door A is provided with a thumb turn 5 for unlocking and unlocking the dead bolt 3 and an electric motor 6 as an electric actuator for operating the thumb turn 5 and attached to the upper side thereof. The control case 7 includes a microcomputer 8 as a control device for driving the electric motor 6 and a battery 9 as a power source. The electric thumb-turn lock can be an auto-lock type, and in that case, it is automatically locked when the door A is closed.

  The electric motor 6 transmits the rotation to the drive shaft 5a of the thumb turn 5 that causes the dead bolt 3 to protrude and retract by a gear transmission mechanism (not shown). The cylinder lock 1 is also connected to the drive shaft 5a of the thumb turn 5, and can be unlocked with the cylinder lock 1 in an emergency such as a battery exhaustion. Normally, the key of the cylinder lock 1 is stored separately and is not used.

  A reader 11 having an RFID (Radio Frequency Identification) antenna 11a is accommodated in a resin-made handle cover 10 that covers the periphery of the handle 2 outside the door A. As shown by a one-dot chain line in FIG. By turning the IC card 20 that is a non-contact type device toward the reader 11, unique information written in an IC chip (not shown) embedded and mounted in the IC card 20 can be read wirelessly. It has become. In addition, an electrostatic switch 12 for guiding the lockout program 16a incorporated in the control circuit 16 of the microcomputer 8 to be described later to be activated or deactivated is incorporated on the upper front side of the handle cover 10. . The reader 11 and the electrostatic switch 12 are connected to the microcomputer 8 in the control case 7 inside the door A by a signal cable 13.

  A plurality of IC cards 20 are prepared so that each member can carry them, and unique information for identifying the members is written in the IC chip. Further, the specific unique information of the IC card 20a possessed by a specific person is identified by the collation program 16b described later as the specific person.

  FIG. 3 shows an electrical system diagram of the electric thumb-turn lock described above. The microcomputer 8 receives outputs of the reader 11 and the electrostatic switch 12 and outputs an unlock signal to the electric motor 6. The power of the battery 9 is supplied to the electric motor 6, the microcomputer 8, the reader 11, and the electrostatic switch 12 through the power supply circuit 14. An external power supply circuit 15 can also be connected to the power circuit 14.

  FIG. 4 shows a control block diagram of the microcomputer 8. The microcomputer 8 is provided with a control circuit 16 that drives to unlock the electric motor 6 and a memory 17 that stores data for collating unique information read by the reader 11. The control circuit 16 incorporates a lockout program 16 a that prohibits unlocking by the electric motor 6 and a collation program 16 b that collates unique information read by the reader 11 with data stored in the memory 17.

  The lockout program 16a is normally inactivated, and is activated only when the unlocking by a general member holding the IC card 20 is restricted. Therefore, normally, only the verification program 16b operates, and if the unique information of the IC card 20 read by the reader 11 matches the data stored in the memory 17, the microcomputer 8 sends an unlock signal to the electric motor 6. Output.

  FIG. 5A shows a control flow chart when the lockout program 16a is put into an operating state. First, when the electrostatic switch 12 is touched three times (the second time is 2 seconds or more), the lockout program 16a enters the operation induction state, and in this state, the IC card 20a with the IC chip on which specific specific information is written is inserted. When the reader 11 is held, the specific unique information of the IC card 20a read by the reader 11 is collated by the collation program 16b, and when the specific unique information matches the data stored in the memory 17, the lockout program 16a Activated. Therefore, at this time, unlocking by the general member IC card 20 cannot be performed.

  FIG. 5B shows a control flowchart when the lockout program 16a is inactivated. In this case, first, when the electrostatic switch 12 is touched twice (the second time is 2 seconds or more), the lockout program 16a is in a non-operation inducing state. When the IC card 20a on which the chip is mounted is placed on the reader 11, specific unique information of the IC card 20a read by the reader 11 is collated by the collation program 16b, and the specific unique information is stored in the data stored in the memory 17. If they match, the lockout program 16a becomes inoperative and can be unlocked by any of the IC cards 20, 20a.

  When the lockout program 16a is set to the operation induction state and the non-operation induction state, the patterns touching the electrostatic switch 12 may be patterns different from each other and can be arbitrarily set.

  In the above-described embodiment, the electric thumb-turn lock can be automatically locked by remodeling the manual thumb-turn lock, and the IC card is used only at the time of unlocking. You may make it use an IC card also at the time of locking. Moreover, when newly installing, a cylinder lock does not need to be integrated in a handle.

  In the embodiment described above, the IC chip-mounted device is the IC card dedicated to the key. However, this IC card can be shared with the IC card used for electronic money, commuter pass, etc. In addition, a mobile phone or the like can be used.

  In the above-described embodiment, each switch that guides the lockout program to the activated state and the deactivated state is a common electrostatic switch. However, these switches may be other switches such as a push button switch. The switches can be separate switches.

1 Cylinder Lock 2 Handle 3 Dead Bolt 4 Drive Case 5 Thumb Turn 5a Drive Shaft 6 Electric Motor 7 Control Case 8 Microcomputer 9 Battery 10 Handle Cover 11 Reader 11a RFID Antenna 12 Electrostatic Switch 13 Signal Cable 14 Power Circuit 15 External Power Supply Circuit 16 Control circuit 16a Lockout program 16b Verification program 17 Memory 20, 20a IC card

Claims (5)

  The thumb turn that unlocks and unlocks the dead bolt, the electric actuator that operates the thumb turn, the reader that reads the unique information written in the IC chip, and the unique information read by this reader are collated and at least unlocked Thus, in the electric thumb turn lock provided with the control device for driving the electric actuator, a lockout program for prohibiting the unlocking by the electric actuator is incorporated in the control circuit of the control device for driving the electric actuator. An operation inductive switch for inducing a program into an operating state and an inactivity inducing switch for inducing a lockout program into an inactive state are provided, and the reader receives specific information on the IC chip while the operation inducing switch is on. When read, the lockout pro An electric motor characterized in that the lockout program is deactivated when the ram is in an activated state and the reader reads the specific specific information with the non-operation inducing switch turned on. Thumb turn tablet.   The electric thumb-turn lock according to claim 1, wherein the IC chip is mounted on a non-contact type device that does not contact the reader.   The electric thumb-turn lock according to claim 1 or 2, wherein at least one of the operation induction switch and the non-operation induction switch is an electrostatic switch that is directed toward and touches the outside of the door.   The operation induction switch and the non-operation induction switch are set as the common electrostatic switch, and when the operation induction switch and the non-operation induction switch are turned on, patterns touching the electrostatic switch are different from each other. The electric thumb-turn lock according to 3.   The electric thumb-turn lock according to claim 4, wherein the touch pattern of the electrostatic switch is set to the number of times of touching, the time of touching, or a combination of these times and time.

Images