JP2010196322A - Composite electronic lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite electric lock, capable of electronically locking and unlocking a mechanical lock in addition to the locking and unlocking by mechanical operation. <P>SOLUTION: The composite electronic lock includes the mechanical lock attached to a door 100, the mechanical lock being rotationally operated, whereby a protruding and recessing mechanism which is protruded to and recessed from a dead bolt 101 to lock and unlock the door; a motor driving mechanism for driving the dead bolt, the motor driving mechanism including two motors M1 and M2 and gear mechanisms 113a and 113b transmitting driving forces generated by the two motors to the protruding and recessing mechanism; an electronic key detection means 211 which detects an electronic key having RFID function and transmits a detection signal; and an operating circuit 213 which operates the motor driving mechanism when the detection signal including data corresponding to a preliminarily registered ID is given from the electronic key detection means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a composite electronic lock in which an electronic key is combined with a mechanical lock called a case lock, and in particular, using an RFID (Radio Frequency IDentification) technology, it can be locked and unlocked by electronic access or manual operation of a mechanical key. The present invention relates to a composite electronic lock that can be used.

  2. Description of the Related Art In recent years, locks called electronic locks that perform locking and unlocking of doors in houses and the like by motor control using an electronic key have become widespread. This electronic lock can be made compact and can be easily attached to a door (see Patent Document 1).

  And by combining an electronic identification means with the motor control circuit of the electronic lock, it is possible to perform locking and unlocking by performing identification with an electronic key, and to provide a lock that is easier to use than a mechanical lock Yes (see Patent Document 2).

  Further, it can be used as a double door lock in combination with an existing door lock mechanism (see Patent Document 3).

  Thus, it may be configured as an electronic lock, which may be duplicated with an existing mechanical lock, or an electronic lock may be installed independently of the mechanical lock. This electronic lock is locked and unlocked by applying an output of an electronic circuit to a motor and driving a dead bolt.

JP 2006-22516 A JP 2006-241856 JP JP 2007-284975

  However, this electronic lock may not be able to transmit the driving force of the motor to the dead bolt because, for example, small dust is mixed in a gear mechanism provided to give the driving force of the motor to the lock. This impairs the reliability of the lock and must be avoided as much as possible.

  The present invention has been made in consideration of the above points, and is a composite electronic lock that can lock and unlock a mechanical lock by mechanical operation and electronic operation, and is a composite electronic lock in which electronic operation is stabilized. The purpose is to provide a lock.

In order to achieve the above object, in the present invention,
A mechanical lock that is attached to the door and operates a turning mechanism for rotating the mechanical key to move the dead bolt in and out to lock and unlock the door; and
A motor-type drive mechanism that has two motors and a gear mechanism that transmits a driving force generated by the two motors to the input / output mechanism, and that drives the dead bolt;
An electronic key detection means for detecting an electronic key having an RFID function and generating a detection signal;
A composite electronic lock comprising an operation circuit that operates the motor-type drive mechanism when the detection signal including data corresponding to an ID registered in advance is provided from the electronic key detection unit;
Is to provide.

  In the present invention, as described above, the mechanical lock is provided with electronic locking and unlocking means, and can be locked and unlocked by either mechanical operation or electronic operation. Moreover, since two motors are provided, even if dust is mixed into the gear mechanism, the two motors cooperate to apply the driving force to the lock, so that the locking and unlocking operations can always be performed stably. .

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows an outline of a composite electronic lock for doors to which the present invention is applied.

  The door 100 is provided with a dead bolt 101 and a latch bolt 121 on its end surface, and locking and unlocking are performed by projecting the dead bolt 101 from the end surface of the door or storing it in the end surface of the door.

  The dead bolt 101 is moved in and out mechanically by rotating the thumb turn 111 and applying a mechanical force to the cam follower (not shown). A one-dot chain line in the figure indicates that there is a transmission mechanism (described later) of this mechanical acting force. As will be described later, the thumb turn 111 can also be used when the latch bolt is housed in the same manner as the door handle 122.

  Further, the motors M1 and M2 and the gear mechanism 113 are used to perform the operation of moving the dead bolt 101 in and out as an electronic lock. The motors M1 and M2 are controlled by an electronic circuit incorporated in the door handle 122. The electronic circuit is, for example, one of two types of electronic keys 300, that is, the activation detection unit 211 is a card-shaped electronic key or a seal type. Operates with any of the electronic keys.

  The electronic key 300 has an RFID function, has predetermined ID data, touches the activation detection unit 211 with the electronic key 300 to activate an electronic circuit in a standby state, and stores the ID data. By performing reading, the motors M <b> 1 and M <b> 2 are rotated to cause the dead bolt 101 to protrude and house through the gear mechanism 113.

  One handle 122 on each of the front and back sides of the door 100 is provided with an electronic circuit, a display 220 for indicating that the electronic circuit has been operated, and a battery 230 serving as a power source for the electronic circuit.

  A dead bolt position detector 212 is provided on the end face of the door 100 to give a detection signal to the electronic circuit. As a result, if the dead bolt position is “open”, the electronic circuit outputs a “dead bolt projecting” signal, and if the dead bolt position is “closed”, the electronic circuit outputs a “dead bolt retracted” signal. To do.

  2A to 2D show the mechanical part of the electronic lock of the present invention as seen from the back side of the door. 2A to 2C sequentially show the movement of each part when the machine key (not shown) is rotated counterclockwise, and FIG. 2D is the machine key rotated clockwise in the figure. The movement of each part is shown.

  This lock is a latch bolt only in the case of mechanical operation of the thumb turn 111 which is caused to project and store the dead bolt 101 by a mechanical key (not shown) or an electronic key 300 (FIG. 1) and which is rotated by the mechanical key. 121 has a mechanism capable of storing 121 and opening the door 100.

  There are roughly three elements that are moved by the rotation of the thumb turn 112, and all of them are supported in a movable manner between a pair of case plates arranged at intervals in the front and back direction of the paper surface.

  When these three elements are referred to in the order in which they start to move from the state of FIG. 2A, the first is the motor panel 102 on which the motors M1 and M2 are mounted, and moves up and down in the drawing. The motor panel 102 is used when locking and unlocking with an electronic key. The second is a dead bolt 101, which reciprocates in the horizontal direction in the figure, and engages and disengages with a dead bolt hole in a building or the like to lock and unlock. The third is a latch bolt lever 114 that rotates around a fulcrum 115 to allow the latch bolt 121 to enter and exit.

  For this purpose, when the mechanical key is rotated clockwise on the front side of the door (the back side of the paper) from the state of FIG. 2A, the thumb turn 111 rotates counterclockwise as indicated by the arrow in the figure, and the motor panel 102 is pushed up and The dead bolt 101 is protruded.

  That is, when the inserted machine key is turned counterclockwise in the figure, as shown in FIG. 2B, the position of the cam 112 on the motor 112 on which the motors M1 and M2 are mounted is regulated by the boss 150 so as not to be laterally moved. Meanwhile, the spring 103 is pushed upward against the pressing force of the spring 103. As a result, the meshing between the gear 113a and the gear portion 101a of the dead bolt 101 is released, and the dead bolt 101 is sent out in the left direction in the figure.

  A cam follower 113 c is provided at the lower left portion of the motor panel 102 in the drawing, and a follower 101 b driven by a thumb-turn cam 112 is provided at the lower right portion of the dead bolt 101 in the drawing. Is controlled.

  The cam follower 113c of the motor panel 102 has a downward mountain shape, and whenever the cam 112 slides on the cam surface, the motor panel 102 is raised and lowered along the cam surface. The cam follower 101b of the dead bolt 101 is composed of three ridges sandwiching two valleys one above the other, and when the machine key is further turned counterclockwise, the cam 112 is engaged with the valley and dead. Push the bolt 101 leftward in the figure.

  A latch bolt lever 114 is pivotally supported by the dead bolt 101 by a fulcrum 115. As shown in FIG. 2C, the cam 112 is rotated counterclockwise in the drawing to move the dead bolt 101 in the left direction in the drawing. Is pushed together with the fulcrum 115, the latch bolt lever 114 moves to the left in the figure, and the tip of the cam 112 does not reach the latch bolt lever 114.

  Next, when the cam 112 is rotated clockwise, as shown in FIG. 2D, the cam 112 comes into contact with the lower end of the latch bolt lever 114 and the latch bolt lever 114 is supported against the extension force of the spring 116. Rotate clockwise about 115.

  Thereby, the latch bolt lever 114 pulls the latch bolt 121 into the end surface of the door 100. That is, the latch bolt 121 can be continuously pulled in after the dead bolt 101 is stored by operating the mechanical key.

  To unlock with the machine key, the inserted machine key is rotated clockwise in the figure. As a result, the reverse operation of the locking operation is performed, and the dead bolt 101 is retracted to enter the unlocked state.

  FIG. 3 shows an opening / closing operation using an electronic key. At this time, when the electronic key approaches, power is supplied to the two motors M1 and M2 by the operation of a circuit (not shown), and a rotational force is generated. Given as a feed force to.

  Similarly, when the electronic key approaches next, power is supplied to the two motors M1 and M2 to generate rotational force in opposite directions, and the dead bolt 101 is pulled back in the right direction in the figure.

  Here, the two motors M1 and M2 are provided so that even if a small dust or the like is caught between one motor and the gear and the rotation stops, it can survive in cooperation with other motors. It is because it can do.

  4 (a) and 4 (b) are explanatory diagrams showing a method for detecting the dead bolt position when the dead bolt 101 is retracted (FIG. 4 (a)) and when it is protruded (FIG. 4 (b)). It is.

  For this purpose, the door 100 is provided with a magnetic sensor 212 (A, B), the dead bolt 101 is provided with a magnet 101 d (C), and the magnetic sensor 212 detects the magnet 101 d as the dead bolt 101 reciprocates.

  When the dead bolt 101 is pulled in, the dead bolt 101 protrudes next, and is then pulled back and forth repeatedly. Now, when the magnetic sensor 212 (A) detects the magnet 101d (C) and the door is opened with an electronic key (not shown), the magnetic sensor 212 (B) causes the magnet 101 d (C) to move. The dead bolt 101 is pulled to the position where the detection is performed.

  When the magnetic sensor 212 (B) detects the magnet 101d (C), it is a time to lock the door, so the dead bolt 101 is detected until the magnetic sensor 212 (A) detects the magnet 101 d (C). To protrude.

  The magnetic sensor 212 may be replaced with a micro switch, and the magnet 101d may be replaced with a protrusion or a recess.

  FIG. 5 shows a circuit configuration according to the present invention, which includes an electronic lock unit 200 and an electronic key unit 300.

  The electronic lock unit 200 is started by the operation start activation detection unit 211. That is, when the electronic key unit 300 is pressed, it is mechanically pressed and sends an activation signal to the controller unit 213. As a result, the electronic lock unit 200 is activated, and first, a signal obtained from the RFID antenna unit 215 for exchanging ID data with the electronic key unit 300 is sent to the controller unit 213, that is, the operating circuit. In addition, the door opening / closing state signal detected by the door opening / closing detection unit 218 is given to the controller unit 213.

  The controller unit 213 has, for example, a non-volatile memory, and verifies whether or not a given signal matches a correct ID stored in the non-volatile memory. As a result, if it is correct, the dead bolt operation driving unit 214 is controlled based on the position signal from the dead bolt position detection unit 212 and the opening / closing detection signal from the door opening / closing detection unit 216.

  That is, when the door is closed and the dead bolt 101 protrudes, the operation of the electronic lock is an unlocking operation, so that the dead bolt 101 is retracted. Further, if an operation with an electronic lock is performed when the door is closed and the dead bolt 101 is retracted, the dead bolt 101 is protruded because it is a locking operation. In addition, a signal is sent to the operation display unit 220 to display that the electronic key unit 300 has been unlocked or locked by light emission or the like.

  On the other hand, when the door is open, it is not necessary to lock and unlock, and there is no need to move the deadbolt 101. Therefore, even if there is an operation with an electronic lock, the deadbolt 101 is not put in and out. At this time, the display unit 220, for example, continuously displays the light and displays that the operation using the electronic lock is an unnecessary operation.

  The controller unit 213 can rewrite the ID stored in the nonvolatile memory. In this method, the stored IDs are erased collectively by pressing a correct electronic key having a predetermined ID for a predetermined time, for example, about 10 seconds, and then the electronic keys storing the predetermined code are re-registered one by one. Thereby, it is possible to cope with a situation such as loss of the electronic key.

  The operation start activation detection unit 211 uses a pyroelectric sensor that detects the presence of a person instead of the one that detects mechanical contact, and operates the electronic lock unit according to the detection signal. It may be.

FIG. 6 is a flowchart showing the operation of the embodiment of the present invention. The operation contents in this flowchart are dead bolt access control by touching an electronic key,
ID registration and deletion of the electronic key.

  First, when the power of the circuit is turned on due to the installation of a battery or the like, the circuit is always in a standby state and continues in a standby state while a weak current flows. During this time, the door is in the open / closed monitoring state in step S1. This is to prevent wasteful battery consumption by dead bolt operation when the door is opened.

  At this time, when the electronic key is touched on the electronic circuit (step S2), the ID of the electronic key is read to determine whether or not it is a registered ID (step S3). If it is not a registered ID, the standby state is continued as it is. If it is a registered ID, a notice of deadbolt operation is displayed by instantaneous lighting (step S4) of the display 220 (FIG. 1), and the process proceeds to step S5.

  Step S5 is a branch point as to whether or not to shift to the electronic key ID registration and deletion mode. If there is a touch for a predetermined time (for example, 5 seconds) with a non-electronic key such as a finger following the touch of the electronic key. Then, the process proceeds to the erase mode (steps S11 and S12).

  Next, if the touch continues for 3 seconds, the mode shifts to the registration mode (steps S21 to S25). If the touch of the electronic key ends in a short time that does not reach 3 seconds, the dead bolt entry / exit operation (after step S31) ).

  That is, when the touch of the electronic key continues for 3 seconds, the process proceeds from step S6 to step S21 to step S22 to enter the registration mode. In the registration mode, a new electronic key ID can be registered.

  If registration of all IDs of the electronic key is deleted, for example, a predetermined number, for example, 10 IDs can be registered, and if some are already registered, the remaining number can be registered.

  When the electronic key is touched (step S23), only when the electronic key has not been registered (step S24), the process proceeds to step S25 to perform registration and return to the standby state. If already registered, the process returns from step S24 to the standby state (step S1) without a registration operation.

  When the touch of the electronic key in step S6 is completed, the process shifts to a dead bolt entry / exit operation after step S31 unless the operation shifts to the operation shown in steps S21 to S25.

  In order to allow the deadbolt to enter and exit, it is first checked in step S31 whether or not a lock with another electronic key has been made. If this lock is already held in a state where another electronic key is touched, the process returns to step S1 and remains in that state.

  In order to hold this locked state, for example, the electronic key 300 is inserted and held in a holding case provided in the vicinity of the electronic lock unit 200 so that the electronic lock unit 200 continues to detect the electronic key. If the electronic key is once released from the activation detection unit 211 and touched again, the process proceeds to step S2, but if the touch continues, the process does not proceed to step S2.

  On the other hand, when another registered electronic key is touched, the operation from step S2 to step S6 is performed to reach step S31. At this time, since there is no lock by another electronic key, the process proceeds to step S32. The deadbolt is activated.

  The operation of the deadbolt is the unlocking operation, that is, the operation of retracting the deadbolt (step S34) when it is locked, that is, when the position of the deadbolt is protruding. Is the operation of projecting (step S35).

  In this way, registration and deletion of the electronic key, and locking and unlocking with dead bolts are performed.

  FIG. 7 shows a door handle as another application target example of the present invention. A case 130 is provided at the base of the door handle 122, and a battery 230 is accommodated in the case 130.

  As another structure, the point which provided the emergency manual generator in the power supply differs from Example 1. FIG. This electronic lock uses a battery as a power source, and the electronic circuit does not work when the battery is exhausted. At that time, as one method, there is a method of locking and unlocking as a mechanical lock without using an electronic key.

  In another method, for example, the tip of the electronic key is brought into contact with a rotary handle 241 having a receiving hole for the electronic key and the rotary handle 241 is rotated to supply electric power generated by the generator 242 to the electronic circuit 210. The rotating handle 241 may be rotated by other suitable means including a finger. Thereby, the electric power for locking and unlocking the electronic lock can be generated.

Other examples

  In the above embodiment, as an example of a mechanical lock to be applied, the one that performs the two-turn operation of the mechanical key for locking and unlocking by entering and leaving the deadbolt, and further rotating the mechanical key to retract the latch bolt is illustrated. Other mechanical locks, for example, one rotation operation, and latch bolts may be applied to those operated by a door handle.

  The controller unit 213 in the above embodiment can have a second exclusion function that does not detect even when another electronic key approaches when detecting one electronic key. For example, if an electronic key is set on the back side of a door, security can be improved by using this electronic key as a priority key so as not to be detected even if there is an access by a subsequent electronic key.

  In the above embodiment, the battery is housed in the door handle, but instead of this, or in addition to this, a self-powered generator such as a manual type may be incorporated so as to cope with an emergency.

  Further, in order to display battery consumption, the electronic key unit 300 may be blinked several times when pressed. At this time, the battery is replaced.

Explanatory drawing which shows schematic structure of one Example of this invention. FIG. 2A is an explanatory view showing a mechanism and operation of a lock to which the present invention is applied. FIG. 2B is an explanatory view showing a mechanism and operation of a lock to which the present invention is applied. FIG. 2C is an explanatory view showing a mechanism and operation of a lock to which the present invention is applied. FIG. 2D is an explanatory view showing a mechanism and operation of a lock to which the present invention is applied. Explanatory drawing which shows operation | movement of a dead bolt when operating this invention as an electronic lock. Explanatory drawing which shows the detection principle of the dead volt | bolt in one Example of this invention. 1 is a block diagram illustrating a circuit configuration example according to an embodiment of the present invention. 6 is a flowchart showing the operation of the circuit shown in FIG. Explanatory drawing which shows the other Example of this invention.

100 door, 101 dead bolt, 101a gear part,
101b Cam follower, 102 Motor panel, 103 Spring,
111 thumb turn, 112 cam, 113 gear mechanism, 113a gear section,
113b gearbox, 113c cam follower,
114 latch bolt lever, 115 fulcrum, 116 spring,
121 latch bolt, 122 door handle, 130 case,
150 boss, 200 electronic circuit, 211 activation detector,
212 Deadbolt position detection unit, 213 controller unit,
214 dead bolt actuation drive, 215 RFID antenna,
216 door opening / closing detection unit, 220 operation display unit, 230 battery,
300 electronic key part, 301 key ID part, 302 RFID antenna part,
M motor.

Claims (12)

A mechanical lock that is attached to the door and operates a turning mechanism for rotating the mechanical key to move the dead bolt in and out to lock and unlock the door; and
A motor-type drive mechanism that has two motors and a gear mechanism that transmits a driving force generated by the two motors to the input / output mechanism, and that drives the dead bolt;
An electronic key detection means for detecting an electronic key having an RFID function and generating a detection signal;
A composite electronic lock comprising: an operating circuit that operates the motor-type drive mechanism when the detection signal including data corresponding to an ID registered in advance is provided from the electronic key detection means. In the composite electronic lock according to claim 1,
A composite electronic lock comprising door opening / closing detection means for detecting an opening / closing state of the door and providing an opening / closing detection signal to the operation circuit. The composite electronic lock according to claim 2,
The composite electronic lock characterized in that the open / close detection means includes a position detection means for detecting the position of the deadbolt, and a means for driving the motor type drive mechanism in accordance with a detection result of the position detection means. In the composite electronic lock according to claim 1,
The electronic key is a card type or seal type, and is a composite type electronic lock. In the composite electronic lock according to claim 1,
The composite electronic lock, wherein the electronic key detection means has a second exclusion function that does not detect another electronic key when one electronic key is detected. In the composite electronic lock according to claim 1,
A composite electronic lock comprising a battery as a power source of the composite electronic lock incorporated in a handle of the door. In the composite electronic lock according to claim 1,
A composite electronic lock comprising a battery as a power source for the composite electronic lock in a case provided in the vicinity of the handle of the door. In the composite electronic lock according to claim 1,
A composite electronic lock characterized in that a manual generator, which is a power source of the composite electronic lock, is built in the door handle. In the composite electronic lock according to claim 1,
The electronic key detecting means is started by being given mechanical action force. In the composite electronic lock according to claim 1,
The electronic key detecting means has a pyroelectric sensor for detecting the approach of a person, and is started according to the output of the pyroelectric sensor. In the composite electronic lock according to claim 1,
The electronic key detecting means has a non-volatile memory for storing an identification signal. In the composite electronic lock according to claim 1,
The actuating circuit erases ID data registered in advance in the electronic key detecting means when the electronic key is continuously detected for a predetermined time.

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