JP2006266018A - Crime preventing system lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a crime preventing system lock for detecting insertion of a tool like a ripping bar to prevent illegal unlocking and damage to a guard plate by breakage of a door frame or a door, and to deter a loss caused by unlocking by breakage. <P>SOLUTION: The crime preventing system lock 100 is mounted across the door frame 11 and the door 15. The door 15 is openably/closeably mounted on the door frame 11 and is brought into a state of locking by allowing a deadbolt protruding from a butt end to proceed into a strike box formed in the door frame 11. The system lock 100 comprises a microswitch mounted on the strike box to detect a locking state by being operated by the entering of the dead bolt, a tape switch provided in a gap between the door frame 11 and the door 15 to detect a change in pressure, and an alarm sound emitting part. The system lock 100 is provided with an alarming circuit for supplying electricity for alarming from a power source to the alarm sound emitting part by a locking detecting signal from the microswitch and a pressure change detecting signal from the tape switch. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a security system lock for a door that can be opened and closed with respect to a door frame, and more particularly, a bar inserted into a gap between the door frame and the door for unauthorized opening of the door. The present invention relates to a security system lock capable of detecting a tool.

  The door provided with a locking device that moves the dead bolt forward and backward from the wooden mouth is locked with the dead bolt protruding from the wooden head entering the troyoke of the strike plate provided in the opening frame when the door is locked. It becomes a state. At this time, the dead bolt may be slightly exposed from the gap between the door frame and the door.

  In recent years, for such a locking structure, a tool such as a bar is inserted into the gap between the door frame and the door, and the door frame and the door are deformed in a direction to widen the gap, so that the strike plate and the dead bolt Criminal actions have been reported to disengage and illegally unlock the door.

Therefore, a guard plate has been proposed as a means for coping with such actions. The guard plate is an L-shaped metal fitting made of a metal material. One bent plate that allows insertion of a dead bolt is fixed to the door mouth, and the other bent plate is parallel to the outdoor door surface. By projecting from the door to the door frame, it is possible to cover the dead bolt exposed in the gap between the door frame and the door, making it difficult to perform unauthorized unlocking as described above (see Patent Document 1).
JP 2003-328610 A

  Inserting a tool such as a bar into the gap between the door frame and the door as described above, and deforming the door frame and the door by twisting to forcibly release the dead bolt engagement state, so-called When the bar breakage is performed, it is necessary to replace not only the locking device but also the door and the door frame, which may result in a large-scale construction and a great repair cost. Even when the guard plate is attached, it is difficult to easily break it with a bar or the like, but a tool may be inserted between the guard plate itself and the door frame. In this case, even if the dead bolt is not disengaged due to breakage, the door frame and the guard plate may be damaged by the twisting of the bar or the like, thereby impairing the function and deteriorating the appearance.

  The present invention has been made in view of the above situation, and detects that a tool such as a bar has been inserted, and prevents unauthorized unlocking due to destruction of the door frame or door, and damage to the door frame / guard plate. The purpose is to provide a security system lock that can be used, and to prevent damage caused by destructive unlocking.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The crime prevention system lock 100 according to claim 1 of the present invention includes a door frame 11 and a dead bolt 13 which is provided in the door frame 11 so as to be freely opened and closed and protrudes from a wooden mouth 17. A security system lock 100 provided across the door 15 that is locked by entering the door,
Locking state detection means 23 provided on the troyoke 21 and operated by the entry of the dead bolt 13 to detect the locked state;
Pressure detecting means 25 provided in a gap 41 between the door frame 11 and the door 15 for detecting a change in pressure;
An alarm circuit that includes alarm means 55 and supplies alarm power from the power source 53 to the alarm means 55 by a lock detection signal from the lock state detector 23 and a pressure fluctuation detection signal from the pressure detector 25. 27,
It is characterized by comprising.

  In this security system lock 100, when a tool 51 such as a bar is inserted into the gap 41 between the door frame 11 and the door 15, the tool 51 directly contacts the pressure detecting means 25 or by insertion of the tool 51. Displacement of the gap 41, for example, a pressure fluctuation that fluctuates as the interval decreases or increases, is detected by the pressure detection means 25, and the alarm power from the power source 53 is supplied to the alarm means 55. 55 reports.

  The crime prevention system lock 100 according to claim 2 is characterized in that the pressure detecting means 25 is a linear pressure detecting means 37 capable of detecting pressure fluctuation at an arbitrary position in the longitudinal direction.

  In this security system lock 100, the pressure detection means 25 is provided in an arbitrary range of a linearly extending gap such as the gap 35 between the door frame 11 and the door 15 or the gap 41 between the door frame 11 and the guard plate 39. It can be arranged with a predetermined length. For example, the linear pressure detecting means 37 is a tape switch or the like.

  The crime prevention system lock 100 according to claim 3 is characterized in that the linear pressure detecting means 37 is provided in the gap 41 between the door frame 11 and the door 15 at least in the range of the strike plate 19.

  In this security system lock 100, the insertion of the tool 51 in the vicinity of the deadbolt where bar or the like is most easily inserted can be detected in order to perform destructive unlocking.

  The crime prevention system lock 200 according to claim 4 is characterized in that the linear pressure detecting means 37 is provided in a gap 61 between the door frame 11 and the door 15 on the side of the suspension base 63 of the door 15. .

  In this security system lock 200, when the tool 51 is inserted into the gap 35 between the door frame 11 and the door 15 in the vicinity of the dead bolt in order to release the engagement of the dead bolt 13, the door 15 is attached to the suspension 63 side. Thus, the pressure fluctuation is detected by the linear pressure detection means 37 provided in the gap 61 between the door frame 11 and the door 15 on the suspension base 63 side.

  The security system locks 100 and 200 according to claim 5 are characterized in that the alarm circuit 27 is provided with an alarm stop switch 57 for interrupting the supply of alarm power to the alarm means 55.

  In the security system locks 100 and 200, when the reporting means 55 is activated, the reporting stop switch 57 is operated to stop only the reporting without opening the door 15 and performing confirmation. It becomes possible.

  According to the security system lock according to claim 1 of the present invention, the lock state detecting means for detecting the locked state of the dead bolt is provided on the troyoke, and the pressure detecting means for detecting the change in pressure is provided between the door frame and the door. Provided with an alarm circuit for supplying alarm power from the power source to the alarm means by means of a lock detection signal and a pressure fluctuation detection signal from the pressure detection means. When the tool is inserted into the gap, the pressure fluctuation detected by the tool coming into direct contact with the pressure detection means or due to the displacement of the gap due to the insertion of the tool is detected by the pressure detection means, and the report power from the power source is generated. The information is supplied to the reporting means, and the reporting means reports. In other words, it is possible to detect that a tool such as a bar has been inserted and activate the alarm means, and prevent unauthorized unlocking due to damage to the door frame or door and damage to the guard plate. It becomes. As a result, damage caused by the destructive unlocking can be minimized.

  According to the security system lock according to claim 2, since the linear pressure detection means capable of detecting pressure fluctuation at an arbitrary position in the longitudinal direction is used as the pressure detection means, the gap between the door frame and the door, Alternatively, the pressure detection means can be easily provided in an arbitrary range of a linearly extending gap such as a gap between the door frame and the guard plate.

  According to the security system lock of claim 3, the linear pressure detection means is provided at least in the range of the strike plate in the gap between the door frame and the door. It is possible to detect the insertion of the tool in the vicinity of the dead bolt that is easy to insert. That is, the insertion of the tool can be efficiently detected by the linear pressure detection means having a short length. In this case, the pressure fluctuation is detected by the linear pressure detecting means when the bar is in direct contact with the linear pressure detecting means, or when the linear pressure detecting means indirectly changes the pressure due to deformation of the door frame or door. Any of those that operate by detecting

  According to the security system lock of the fourth aspect, since the linear pressure detecting means is provided in the gap between the door frame on the door suspending side and the door, in order to release the engagement of the dead bolt, It is possible to easily detect an action of inserting a tool into a gap between a door frame and a door in the vicinity and attempting to deform the door frame or the door. That is, when trying to widen the gap in the vicinity of the dead bolt with a tool, the door is moved in a direction approaching the door frame on the suspending side, and thereby the linear shape provided in the gap between the door frame on the suspending side and the door The pressure detection means can detect a pressure fluctuation and detect that destructive unlocking is being performed. Moreover, according to the structure of this crime prevention system lock, since the linear pressure detection means does not exist in the vicinity of the dead bolt, it is difficult to understand the presence of the linear pressure detection means, and the crime prevention performance can be improved.

  According to the security system lock according to claim 5, since the reporting circuit is provided with the reporting stop switch for shutting off the supply of the reporting power to the reporting unit, for example, an illegal act is performed and the reporting unit Even if you want to temporarily stop the activated state or when the alarm is activated at bedtime, it is possible to stop only the alarm without inadvertently opening the door for confirmation. Yes, it can improve crime prevention.

DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a security system lock according to the present invention will be described in detail with reference to the drawings.
1 is an overall schematic perspective view of the vicinity of a door provided with a security system lock according to the present invention, FIG. 2 is a longitudinal sectional view of the security system lock shown in FIG. 1 in an unlocked state, and FIG. FIG. 4 is an alarm circuit diagram in the unlocked state, FIG. 5 is a longitudinal sectional view of the security system lock in the locked state, FIG. 6 is a sectional view taken along the line BB in FIG. 5, and FIG. It is a notification circuit diagram.
The security system lock 100 according to the present embodiment is provided across a door frame 11 and a door 15 provided on the door frame 11 so as to be freely opened and closed and provided so that a dead bolt 13 can be advanced and retracted. The door 15 is brought into a locked state by causing the dead bolt 13 protruded from the mouthpiece 17 to enter the trolley 21 of the strike plate 19 provided in the door frame 11.

  The security system lock 100 according to the present embodiment includes a lock state detection unit 23, a pressure detection unit 25, and a notification circuit 27 as main components. The lock state detection means 23 is provided in the trolley 21 of the strike plate 19 and is activated by the entry of the dead bolt 13 so that the lock state can be detected. As the lock state detection means 23, for example, a microswitch 31 having a rocker 29 arranged in a biased state in the backward direction of the dead bolt 13 can be suitably used.

  In the normal state, the microswitch 31 is swung in the opening direction of the troyoke 21 in the normal state, and when the dead bolt 13 protrudes into the troyoke 21 when the door is closed, as shown in FIGS. The tip of the dead bolt 13 is swung in the protruding direction of the dead bolt 13 and operates to close the internal contact S1 as shown in FIG. The oscillator 29 is urged in the backward direction of the dead bolt 13, so that the dead bolt 13 is retracted into the lock box 33, so that the urging means opens the opening side of the trolley 21 (shown in FIG. 2). ).

  The pressure detection means 25 is provided in the gap 35 between the door frame 11 and the door 15 and can detect a change in pressure. As the pressure detection means 25, for example, a so-called tape switch 37 which is a linear pressure detection means capable of detecting pressure fluctuation at an arbitrary position in the longitudinal direction can be used. By using the tape switch 37 capable of detecting such pressure fluctuation at an arbitrary position in the longitudinal direction as the pressure detection means 25, the gap 35 between the door frame 11 and the door 15, or the door frame 11 and the guard plate. It is possible to easily provide the pressure detecting means in an arbitrary range of the gaps 35 and 41 extending linearly, such as the gap 41 with respect to 39.

  The tape switch 37 is provided at least in the range of the strike plate 19 in the gap 35 between the door frame 11 and the door 15. Since the tape switch 37 is provided in the gap 35 between the door frame 11 and the door 15 at least in the range of the strike plate 19, in order to perform destructive unlocking, in the vicinity of the dead bolt 13 in which the bar or the like is most easily inserted. The insertion of the tool can be detected. That is, the insertion of the tool can be detected efficiently by the tape switch 37 having a short length. In this case, the pressure fluctuation is detected by the tape switch 37 when the bar contacts the tape switch 37 or when the tape switch 37 indirectly detects the pressure fluctuation due to the deformation of the door frame 11 or the door 15. Any one that operates.

  As shown in FIG. 3, the door 15 is closed in a state in which the door 15 substantially contacts the door stop 43 of the door frame 11. In this state, the guard plate 39 provided at the wooden mouth 17 of the door 15 has a guard portion 39 a substantially parallel to the outdoor surface 15 a of the door 15 and covers a part of the door frame 11. In the present embodiment, as shown in FIG. 3, a tape switch 37 is provided in a gap 41 between the door frame 11 and the guard portion 39 a of the guard plate 39 that is continuous with the gap 35 between the door frame 11 and the door 15. The tape switch 37 is fixed to the door frame 11 side, and a lead wire (not shown) is inserted into the door frame 11 and connected to the alarm circuit 27 in the alarm device (not shown) on the indoor side. The lead wire 47 of the micro switch 31 is also inserted into the door frame 11 and connected to the alarm circuit 27 in the alarm device (not shown) on the indoor side.

  When the door shown in FIG. 3 is closed, a slight gap 41 is formed in the guard portion 39a of the guard plate 39 and the door frame 11, and the contact S2 of the tape switch 37 arranged in the gap 41 is opened. Therefore, in the unlocked state in which the door 15 is closed and the dead bolt 13 is not protruded, both the tape switch 37 and the micro switch 31 of the alarm circuit 27 are in the open state as shown in FIG.

  On the other hand, as shown in FIG. 5, when the thumb turn (not shown) is operated and the lock box 33 is locked in the closed state, the dead bolt 13 protrudes from the lock box 33, and the protruded dead bolt 13 moves to the strike plate 19. By entering the inside of the trolley 21, the rocker 29 of the micro switch 31 is pressed, and the contact S <b> 1 of the micro switch 31 is closed. Thereby, as shown in FIG. 7, the alarm circuit 27 is in a state where only the contact S2 of the tape switch 37 is opened. That is, the locking operation of the dead bolt 13 becomes a trigger signal for the crime prevention mode.

Next, the operation of the security system lock configured as described above will be described.
FIG. 8 is a cross-sectional view in the vicinity of the guard plate showing a state where the bar of the security system lock according to the present invention is inserted, and FIG. 9 is a state where the alarm power is supplied to the alarm means by inserting the bar. FIG. 10 is an alarm circuit diagram according to a modified example in which an alarm stop switch is provided, and FIG. 11 is an alarm circuit according to a modified example in which the alarm stop switch is operated and the alarm is stopped. It is an information circuit diagram.
In the security system lock 100, when the door 15 is closed and the dead bolt 13 is locked, the alarm circuit 27 is opened only by the contact of the tape switch 37 as shown in FIG.

  In this state, for example, as shown in FIG. 8, when a tool 51 such as a bar is inserted into the gap 41 between the guard plate 39 and the door frame 11 and an attempt is made to break and unlock it, the tip of the tool 51 is moved to the tape switch. 37 and the contact S2 of the tape switch 37 is closed. As a result, as shown in FIG. 9, the alarm circuit 27 is closed, and the alarm power from the power source 53 is supplied to an alarm sound generator 55 such as a speaker or buzzer as an alarm means, and an alarm sound is generated. It becomes. Note that the alarm sound generation unit 55 that is a reporting unit may be disposed indoors, for example, in the vicinity of a door, or in a living room. In addition to the sound, means for emitting light such as a warning light may be used as the reporting means.

  As shown in FIG. 10, the alarm circuit 27 is preferably provided with an alarm stop switch 57. By providing such a notification stop switch 57, for example, when it is desired to temporarily stop when an illegal action is performed and an alarm sound is generated continuously, or at bedtime, Even when a sound is emitted, the alarm is stopped by operating the alarm stop switch 57 as shown in FIG. 11 without unintentionally unlocking and opening the door 15 for confirmation. Only can be stopped, crime prevention can be improved.

  Therefore, according to the security system lock 100, the micro switch 31 that detects the locked state of the dead bolt 13 is provided in the troyoke 21, and the tape switch 37 that detects a change in pressure is provided in the gap 41 between the door frame 11 and the door 15. Provided with the alarm circuit 27 for supplying the alarm power from the power source 53 to the alarm sound generation unit 55 by the lock detection signal and the pressure fluctuation detection signal from the tape switch 37. When inserted into the gap 41 between the frame 11 and the door 15, the tape switch 37 detects pressure fluctuations caused by the tool 51 directly contacting the tape switch 37 or the displacement of the gap 41 caused by the insertion of the tool 51. Then, the alarm power from the power source 53 is supplied to the alarm sound generation unit 55, and the alarm sound generation unit 55 generates an alarm. That is, it is possible to detect that the tool 51 such as a bar has been inserted and to activate the alarm sound generation unit 55, and to prevent unauthorized unlocking due to breakage of the door frame 11 or the door 15 or damage to the guard plate 39. Can be prevented. As a result, damage caused by the destructive unlocking can be minimized.

Next, a second embodiment of the security system lock according to the present invention will be described.
FIG. 12 is a cross-sectional view of a door frame and a door provided with a security system lock according to another embodiment of the present invention.
In the security system lock 200 according to this embodiment, the tape switch 37 is provided in the gap 61 between the door frame 11 and the door 15 on the suspending source 63 side of the door 15.

  In this security system lock 200, for the purpose of releasing the engagement of the dead bolt 13, a tool 51 is inserted into the gap 35 between the door frame 11 and the door 15 in the vicinity of the strike plate 19, and the dead bolt 13 is engaged. When the tool 51 is squeezed in the releasing direction, that is, in the direction of widening the gap 35, the door 15 is moved to the suspension base 63 side (arrow a side), and this movement causes the tape switch provided in the clearance 61 on the suspension base side. 37 is pressed and the contact S2 is closed. As a result, as shown in FIG. 9, the alarm circuit 27 is closed, the alarm power from the power source 53 is supplied to the alarm sound generator 55, and the alarm sound generator 55 generates an alarm.

  Therefore, according to the security system lock 200, the tape switch 37 is provided in the gap 61 between the door frame 11 and the door 15 on the side of the suspension 63 of the door 15, so that the dead bolt 13 is disengaged. The act of trying to deform the door frame 11 or the door 15 by inserting the tool 51 into the gap 35 between the door frame 11 and the door 15 near the dead bolt can be easily detected. That is, when trying to widen the gap 35 in the vicinity of the dead bolt with the tool 51, the door 15 is moved in a direction approaching the door frame 11 on the suspension source side. The tape switch 37 provided in the gap 61 can detect pressure fluctuations and detect that destructive unlocking is being performed. Moreover, according to the structure of this crime prevention system lock 200, since the tape switch 37 does not exist in the vicinity of the dead bolt 13, the presence of the tape switch 37 can be obscure and crime prevention can be improved.

Note that the security system lock according to the present invention can take the configurations of the following modifications in addition to the configurations of the embodiments described above.
That is, in the above-described embodiment, the micro switch 31 is provided in the trolley 21. However, for example, when the door 15 is provided with an electric lock, a lock detection signal may be obtained from the electric lock.
In the above embodiment, the case where the tape switch 37 is provided in a part of the gap between the door frame 11 and the door 15 has been described. However, the tape switch 37 is provided on the entire circumference of the gap between the door frame 11 and the door 15. In this case, the breaking and unlocking due to the insertion of the tool 51 can be detected with higher accuracy.

Moreover, although said embodiment demonstrated the case where the door 15 was one side opening, the crime prevention system lock | rock which concerns on this invention is applicable similarly even if a door is a double door opening. In this case, the tape switch 37 is provided in the summing part of the left and right doors.
Further, the power source 53 provided in the alarm circuit 27 may be either a battery or a commercial power source supplied by electric wiring from the housing side.
Further, the reporting means 55 provided in the reporting circuit 27 may be provided not only indoors but also indoors and outdoors. By placing it outdoors, it is possible to intimidate those who engage in fraudulent activities, and it is possible to warn neighbors.

  Furthermore, in the above embodiment, the circuit configuration is such that when the tape switch 37 is pressed, the alarm circuit 27 is closed and the alarm power is supplied to the alarm sound generator 55. The contact point of the tape switch 37 that is closed when the door is closed may be used in the alarm circuit. In this case, it is detected that the contact of the tape switch 37 has been opened by inserting the tool 51, and the alarm circuit 27 is closed and alarm power is supplied to the alarm sound generator 55. Circuit configuration.

It is a whole perspective view near the door provided with the security system lock concerning the present invention. It is a longitudinal cross-sectional view in the unlocking state of the security system lock | rock shown in FIG. It is an AA arrow line view of FIG. It is an alarm circuit diagram in an unlocked state. It is a longitudinal cross-sectional view of the security system lock in the locked state. It is a BB arrow line view of FIG. It is an alarm circuit diagram in the locked state. It is a cross-sectional view of the vicinity of the guard plate showing the state where the bar of the security system lock according to the present invention is inserted. It is an alarm circuit diagram in a state where alarm power is supplied to the alarm means by inserting the bar. It is an alarm circuit diagram concerning a modification provided with an alarm stop switch. It is a notification circuit diagram concerning a modification showing a state where the notification stop switch is operated and the notification is stopped. It is a cross-sectional view of a door frame and a door provided with a security system lock according to another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Door frame 13 ... Dead bolt 15 ... Door 17 ... Kiguchi 19 ... Strike board 21 ... Troyoke 25 ... Pressure detection means 27 ... Notification circuit 31 ... Locking state detection means (microswitch)
35, 41, 61 ... clearance 37 ... linear pressure detection means (tape switch)
53 ... Power supply 55 ... Notification means (alarm sound generator)
57 ... Notification stop switch 100, 200 ... Security system lock

Claims (5)

A security system lock provided over the door frame and the door that is provided in the door frame so as to be openable and closable and that protrudes from the end of the door and enters the trolley provided in the door frame to be locked. There,
Locking state detection means that is provided in the Troyoke and operates by the entry of the dead bolt to detect the locking state;
Pressure detecting means provided in a gap between the door frame and the door to detect a change in pressure;
A reporting circuit that includes a reporting unit that supplies a reporting power from a power source to the reporting unit by a locking detection signal from the locking state detection unit and a pressure fluctuation detection signal from the pressure detection unit;
A security system lock characterized by comprising:   The security system lock according to claim 1, wherein the pressure detection means is a linear pressure detection means capable of detecting a pressure fluctuation at an arbitrary position in the longitudinal direction.   The crime prevention system lock according to claim 2, wherein the linear pressure detection means is provided in a gap between the door frame and the door at least in the range of a strike plate.   The crime prevention system lock according to claim 2, wherein the linear pressure detecting means is provided in a gap between the door frame and the door on the side of the door suspension.   5. The reporting circuit according to claim 1, wherein a reporting stop switch that cuts off supply of reporting power to the reporting unit is provided in the reporting circuit. Security system lock.

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