JP2007198053A - Electric lock system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To normally lock and unlock a lock by obtaining exact information which indicates the positional relationship between a strike on the door frame side and a lock body on the door side. <P>SOLUTION: A magnet 3 is provided on the door frame 2 side and a magnetic sensor 5 is provided to face the magnet 3 in the magnet body 4 on the door 7 side. The magnetic sensor 5 detects the intensity of magnetic field by the magnet 3 in accordance with the opening and closing of the door 7. A magnetic operating part 6 compares the intensity of the magnetic field which the magnetic sensor 5 detects with the intensity of a set magnetic field which is preliminarily initialized in accordance with door closure or the lockable state of the lock and outputs a judgement signal which indicates the state of door closure and the lockable state of the lock in accordance with comparison result to a main control part 9. The main control part 9 locks and unlocks the lock based on the judgement signal indicating the present state of the door 7 and the lock from the magnetic operating part 6 when the locking and unlocking operation from the outside is normally carried out by obtaining the exact information which indicates the positional relationship between the strike on the door frame and the lock body by the judgement signal from the magnetic operating part 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is employed in, for example, hotel rooms, house entrance doors, entrances and exits of various facilities, etc., and card information of cards issued in advance to those who permit entry and exit, input information from a numeric keypad, etc. (for example, a password) The electric lock system that controls locking and unlocking of the lock only when it is normally authenticated by verifying the correctness of the lock, particularly shows the positional relationship between the strike on the door frame side and the lock body on the door side The present invention relates to an electric lock system capable of obtaining information.

  In recent years, electric lock systems have been widely used in entrances and exits of commercial facilities and public facilities such as hotels and office buildings, entrances and entrances of housing complexes and ordinary houses. In this electric lock system, a card-like storage medium storing various data such as specific encryption and locking / unlocking information allocated in advance for each electric lock is used as a key card, and various data stored in this key card. (For example, locking / unlocking data with a specific encryption) is read, the read data is collated with pre-registered information to determine the legitimacy, and only when it is successfully authenticated, the current door open / close state and unlocking The lock is electrically locked and unlocked according to the lock state.

  Here, FIG. 2 (a), (b) has shown schematic structure of the conventional electric lock system. As shown in FIGS. 2 (a) and 2 (b), in this type of electric lock system 11, a strike on the door frame 2 side is performed when the lock control is electrically locked and unlocked by the main control unit 9 as a control panel. An opening / closing signal for the door 7 is obtained using a magnet 3 embedded in 2a and a reed switch 15 which is a proximity switch provided in the lock body 4 so as to face the magnet 3. Further, the magnet 3 and the reed switch 15 are also used when obtaining a determination signal for whether or not the locking operation is performed.

Then, a well-known energization fitting as disclosed in, for example, Patent Document 1 and Patent Document 2 below is fixed to the indoor side surface of the door 7 on the suspending side, and the reed switch is connected via the energization fitting. 15 is connected to the main control unit 9 by a connection cord.
JP 2005-171622 A JP 2004-131954 A

  By the way, in this kind of electric lock system 11, in order to lock or unlock the lock, the positional relationship between the strike 2a on the door frame 2 side and the lock body 4 on the door 7 side is an important factor.

  However, as in the conventional electric lock system 11 shown in FIG. 2, in the configuration in which the monitor signal is obtained when the lock is unlocked using the magnet 3 and the reed switch 15, the reed for operating the reed switch 15. There was a problem that the distance range between the switch 15 and the magnet 3 was limited.

  For example, depending on where the lock is installed, the distance between the magnet 3 and the reed switch 15 increases from H1 to H2 to some extent as shown in FIG. 2 (b) to the state shown in FIG. 2 (b). May be far away. In particular, when the distance between the magnet 3 and the reed switch 15 is large (the state shown in FIG. 2B), the reed switch 15 cannot be operated by the magnetic field of the magnet 3, and the reed switch 15 There is a problem in that the operation range of the reed switch 15 by the magnet 3 is limited because the magnet is not turned on.

  Further, in FIG. 3A, when the dead switch (デ ッ ド) 8 is locked in the locking hole on the strike 2a side and the door 7 is stopped at the door frame 2 and the reed switch 15 is turned on, for example, As shown in FIG. 3B, when the door 7 is pulled in the direction of the arrow, the dead bolt (閂) 8 remains locked in the locking hole on the strike 2a side and the door 7 does not open, but the magnetic field of the magnet 3 May deviate from the operating range of the reed switch 15 and the reed switch 15 may turn off. When an OFF signal is input to the main control unit 9 from the reed switch 15 as a monitor signal, the main control unit 9 erroneously determines that the door is open although the door is currently closed, and the lock is unlocked normally. There were cases where it was not possible.

  Thus, in the conventional electric lock system, not only the distance range between the proximity switch and the magnet is limited, but also the proximity switch output that is indispensable for obtaining the monitor signal is binary information by ON / OFF. Therefore, information on the positional relationship between the strike on the door frame side and the lock body on the door side before and after the proximity switch is turned on cannot be obtained accurately, and the current door and lock state There was a risk that the lock could not be properly locked and unlocked.

  Therefore, the present invention has been made in view of the above problems, and provides an electric lock system capable of obtaining accurate information indicating the positional relationship between the strike on the door frame side and the lock body on the door side. In addition, another object of the present invention is to provide an electric lock system that can normally lock and unlock the lock by using this accurate information as a monitor signal.

In order to achieve the above-described object, in the electric lock system according to claim 1, a magnet and a magnetic sensor are arranged to face each other on a door frame side and a door side,
The magnitude of the magnetic field of the magnet that is detected by the magnetic sensor when the door is opened and closed is compared with the magnitude of the magnetic field that is preset in advance according to the lockable state of the door and the lock. And a magnetic operation unit that outputs a determination signal indicating a closed state and a lockable state of the lock.

The electric lock system according to claim 2 is the electric lock system according to claim 1,
And a main control unit that electrically locks and unlocks the lock based on a determination signal from the magnetic calculation unit when an unlocking operation is performed from the outside.

  According to the electric lock system of the present invention, accurate information indicating the positional relationship between the strike on the door frame side and the lock body on the door side can be obtained. Based on this accurate information, the lock can be normally locked and unlocked.

  The best mode of the present invention will be described below with reference to the accompanying drawings. 1A and 1B are diagrams showing a schematic configuration of an electric lock system according to the present invention. 1A shows a distance between the strike on the door frame side and the lock body on the door side, and FIG. 1B shows a distance between the strike on the door frame side and the lock body on the door side. Each shows a case where is larger than (a).

  The electric lock system of the present invention is employed in, for example, hotel rooms, house entrance doors, entrances and exits of various facilities, and, for example, based on the processing results of signals from magnetic sensors such as hall elements and magnetoresistive elements, Accurate information indicating the positional relationship with the lock body on the door side is obtained.

  As shown in FIG. 1, in the electric lock system 1 of this example, the magnet 3 is provided in the strike 2a by the side of the door frame 2 to which the door 7 is attached so that opening and closing is possible. A magnetic sensor 5 is provided in the lock body 4 on the door 7 side. The magnet 3 and the magnetic sensor 5 are arranged to face each other with the door 7 closed.

  The magnetic sensor 5 is composed of, for example, a Hall element or a magnetoresistive element, and detects the magnitude of the magnetic field of the magnet 3. This magnetic sensor 5 is connected to a magnetic calculation unit 6 via a connection cord and a known energizing metal fitting (not shown), and as shown in FIGS. 1A and 1B, a magnet 3 provided on the strike 2a. The detection signal which shows the magnitude | size of the magnetic field according to distance H1, H2 between the end surfaces between is always input into the magnetic calculating part 6. FIG.

  The magnetic calculation unit 6 includes a magnetic field comparison unit 6a and a determination unit 6b. The magnetic field comparison means 6a constantly compares the magnitude (measurement value) of the magnetic field based on the detection signal from the magnetic sensor 5 with the magnitude (setting value) of the preset magnetic field that is preset in advance, and according to the magnitude result. The comparison signal is output to the discriminating means 6b.

  Note that the set magnetic field (set value) that is initially set to be compared with the magnitude (measured value) of the magnetic field by the magnetic sensor 5 is a strike magnetic field measuring jig (not shown), the strike 2a (door frame 2) or the door 7 or The magnetic field is measured by moving the door 7 with the dead bolt (cage) 8 attached to the lock body 4 or each, and the optimum value is set according to the closed state or lockable state based on the measurement result.

  Based on the comparison signal from the magnetic field comparison means 6a, the determination means 6b determines whether or not the current door 7 is in a closed state, whether or not the current lock is in a lockable state, and the like. It is output to the main controller 9 as a monitor signal.

  The main control unit 9 provides accurate information indicating the positional relationship between the strike 2a on the door frame 2 side and the lock body 4 on the door 7 side by a determination signal (monitor signal) from the determination unit 6b of the magnetic calculation unit 6. It has gained. The main control unit 9 determines the legitimacy of the operation when the unlocking (or locking) operation is performed from the outside, and only when it is determined to be normal, the main control unit 9 uses the determination signal (monitor signal) from the determination unit 6b. The lock is electrically locked and unlocked according to the current state.

  For example, when a card-like storage medium storing various data such as specific encryption and locking / unlocking information assigned in advance for each electric lock is used as a key card, the main control unit 9 is stored in this key card. Only when the various data (for example, locking / unlocking data by a specific encryption) is obtained, the obtained various data are collated with previously registered information to determine the validity, and are normally authenticated. The lock is electrically locked / unlocked according to the current open / close state of the door 7 and the lock / unlock state of the lock based on the signal.

  In the case of the auto-lock system, when the door 7 is closed after unlocking the lock as an external locking operation, the main control unit 9 detects the current open / close state of the door 7 based on the discrimination signal from the discrimination means 6b and the lock status. The lock is electrically locked and controlled according to the unlocked state.

  In addition to the above lock / unlock control, the main control unit 9 also uses, for example, an alarm sound based on the opening / closing state of the door 7 and the lock / unlock state of the lock before and after the lock control based on the determination signal from the magnetic calculation unit 6. Alarm output such as warning display is performed.

  Next, the operation of the electric lock system 1 configured as described above will be described. In the electric lock system 1 of the present example, before operation, the magnetic field is measured in advance by moving the door 7 in a state where the dead bolt (閂) 8 has come out and in other states, and depending on the closed state, the lockable state, etc. Is the initial set magnetic field (set value).

  The set magnetic field is scheduled to be measured when the electric lock system 1 is operated, and the magnetic field is measured by the magnetic sensor 5 and adjusted to the optimum magnetic field size for determining whether the door 7 is opened / closed or unlocked / unlocked. It may be determined and set.

  In actual operation after setting the set magnetic field, the magnitude of the magnitude (measured value) of the magnetic field detected by the magnetic sensor 5 is compared with the magnitude (set value) of the initially set magnetic field. Do. The magnetic calculation unit 6 always determines whether the door 7 is open or closed based on the comparison result, and the determination result is sent to the main control unit 9 as a determination signal (monitor signal). send.

  Similarly, the magnetic calculation unit 6 compares the magnitude (measured value) of the magnetic field detected by the magnetic sensor 5 with the magnitude (set value) of the initially set magnetic field, and based on the comparison result. Thus, it is always determined whether or not the lock can be locked, and the determination result is sent to the main control unit 9 as a determination signal (monitor signal).

  Further, the magnetic calculation unit 6 compares the magnitude (measured value) of the magnetic field detected by the magnetic sensor 5 with the magnitude (set value) of the initially set magnetic field, and based on the comparison result. Even when the detected magnetic field value deviates from the initial set magnetic field value by an allowable range (a preset magnetic field range together with the set magnetic field value) or more, the determination signal (monitor signal) is sent to the main control unit 9. send.

  When the unlocking operation is performed from the outside by, for example, a key card or a password input, the main control unit 9 obtains the key card information or the password information, determines its legitimacy, and only authenticates normally. When a determination signal indicating that the door is unlocked and unlockable is input from the magnetic calculation unit 6 as a monitor signal, for example, the dead bolt 8 is retracted from the engagement hole of the strike 2a via a drive mechanism (not shown). To unlock the lock electrically.

  On the other hand, for example, when the door 7 is closed after the lock is unlocked by the auto-lock system, when the determination signal indicating the lockable state in the closed state is input from the magnetic calculation unit 6 as a monitor signal, For example, the lock is electrically locked by causing the dead bolt 8 to enter the engagement hole of the strike 2a via a drive mechanism (not shown).

  In addition, when a locking operation is performed from the outside by, for example, a key card or a password input, the key card information or the password information is obtained and the legitimacy is determined in the same manner as at the time of unlocking the lock. Only when authentication is performed, when a determination signal indicating a lockable state with the current door closed state is input from the magnetic calculation unit 6 as a monitor signal, the lock is electrically locked.

  The main control unit 6 determines that the measured value of the magnetic field is abnormal when the determination signal indicating that the measured value of the magnetic field deviates from the set magnetic field value by an allowable range or more is input as a monitor signal. For example, an alarm such as an alarm sound or a warning display is output.

  Thus, in the electric lock system 1 of this example, the magnitude (measured value) of the magnetic field by the magnet 3 accompanying the opening and closing of the door 7 is initially set by using the magnetic sensor 5 such as a Hall element or a magnetoresistive element. Since the magnitude (setting value) of the set magnetic field is compared to determine the magnitude, accurate information indicating the positional relationship between the strike 2a on the door frame 2 side and the lock body 4 on the door 7 side can be obtained. .

  For example, if initial setting is performed in accordance with the maximum distance between the strike 2a on the door frame 2 side and the lock body 4 on the door 7 side as shown in FIG. 2 and FIG. 3, it can be recognized that the door is closed. Moreover, since the magnetic sensor 5 measures the magnitude of the magnetic force by the magnet 3 instead of the conventional ON / OFF by the magnetic field of the magnet 3, the closed state and the unlockable state can be separately determined.

  Further, if the accurate information obtained as described above is used as a monitor signal indicating the current door 7 and the state of the lock necessary for locking and unlocking the lock, the accuracy of the monitor signal is improved as compared with the conventional case. In addition, the lock can be normally locked and unlocked without erroneously determining the current door or lock state.

  By the way, in this example, although the magnetic calculation part 6 was demonstrated as a structure different from the main control part 9, the detection signal (measured value) from the magnetic sensor 5 is input into the main control part 9, and the function of the magnetic calculation part 6 is demonstrated. It is good also as a structure which gives the main control part 9 and processes.

  In the example of FIG. 1, the magnet 3 is provided in the strike 2 a, but the magnet 3 may be provided at a predetermined position of the door frame 2 so as to face the magnetic sensor 5 in the lock body 4. Further, in the example of FIG. 1, the magnet 3 is provided in the strike 2 a on the door frame 2 side, and the magnetic sensor 5 is provided in the lock body 4 on the door 7 side so as to face the magnet 3. It is good also as a structure which reversed. That is, the magnet 3 may be provided in the lock body 4 on the door 7 side, and the magnetic sensor 5 may be provided in the strike 2 a on the door frame 2 side so as to face the magnet 3.

  Furthermore, as an arrangement of the magnet 3 and the magnetic sensor 5, for example, the magnet 3 is provided at a predetermined position of the door frame 2 other than the strike 2 a, and the magnetic sensor 5 is opposed to the magnet 3 at a predetermined position of the door 7 other than the lock body 4. It can also be provided. Alternatively, the magnet 3 may be provided at a predetermined location on the door 7 other than the lock body 4, and the magnetic sensor 5 may be provided at a predetermined location on the door frame 2 other than the strike 2 a so as to face the magnet 3.

  Furthermore, in the example shown in the figure, the magnet 3 and the magnetic sensor 5 are provided one by one. However, the magnet 3 and the magnetic sensor 5 are paired as one pair, and a plurality of sets of the magnet 3 and the magnetic sensor 5 are combined. It is good also as a structure which divides and arranges in the door frame 2 side and the door 7 side along the height direction of the door 7. FIG. In this case, a set magnetic field is set for each magnetic sensor 5, the magnetic calculation unit 6 compares the measured value of each magnetic sensor 5 with the set magnetic field, and the main control unit 9 uses the discrimination signal based on the comparison result. The current door 7 and lock state are determined.

  That is, in the electric lock system 1 of the present example, the magnet 3 and the magnetic sensor 5 may be configured so as to be separated from each other on the door frame 2 side and the door 7 side and provided with at least one set.

(A), (b) It is a figure which shows schematic structure of the electric lock system which concerns on this invention. (A), (b) It is a figure which shows schematic structure of the conventional electric lock system. (A), (b) It is the schematic for demonstrating the subject by the conventional electric lock system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Electric lock system 2 Door frame 2a Strike 3 Magnet 4 Lock body 5 Magnetic sensor 6 Magnetic calculation part 6a Magnetic field comparison means 6b Discriminating means 7 Door 8 Dead bolt (閂)
9 Main control unit 15 Reed switch (proximity switch)

Claims (2)

A magnet and a magnetic sensor are separated and arranged on the door frame side and the door side,
The magnitude of the magnetic field of the magnet that is detected by the magnetic sensor when the door is opened and closed is compared with the magnitude of the magnetic field that is preset in advance according to the lockable state of the door and the lock. An electric lock system comprising a magnetic calculation unit that outputs a discrimination signal indicating a closed state and a lockable state of the lock. 2. The electric lock according to claim 1, further comprising a main control unit for electrically locking / unlocking the lock based on a determination signal from the magnetic operation unit when an unlocking operation is performed from the outside. system.

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