JP4435534B2 - Door alarm - Google Patents

Description

The present invention, unauthorized opening act and of the door that due to the dead bolt function as defective by inserting a tool in the gap between the door and the door frame, than for the non-unlocking act against the door lock (so-called picking), etc. The present invention relates to a door alarm device capable of reliably detecting and warning an illegal act.

  In recent years, there have been frequent crimes involving unauthorized opening of entrance doors, etc., but as a method of unauthorized entry, there is a method of performing unauthorized unlocking (so-called picking) directly on the door lock, For example, a tool may be inserted between them to forcibly unlock the door by breaking the function of the door lock. Among these methods, for the unauthorized unlocking performed by inserting a tool between the door and the door frame, for example, a configuration in which a gap with the door frame is covered with a brim-like cover is disclosed. (See FIG. 1 of Patent Document 1).

Moreover, the thing of the structure which covers the whole doorknob with a cover is disclosed with respect to the unauthorized unlocking | release with respect to a door lock (refer patent document 2).
JP 2003-201786 A JP 2002-349104 A

However, the one that covers the gap between the door and the door frame with a brim-like cover, inserts a tool from the gap between the door and the door frame, forcibly retreats the door lock to make it malfunction. It was not a valid prevention means for the modus operandi to carry out unauthorized opening of the door.
As a means for performing the above-described unauthorized opening, a clearance generated between the door and the door frame is used to perform unauthorized unlocking by retreating the dead bolt from the outside of the door using a tool such as a bar. However, since there is always a gap between the door and the door frame, unauthorized intrusion is performed by paying attention to the gap, and a plate attached to the end face of the door as an instrument to close this gap A shaped member is provided.

However, although such a plate-like member can close the gap between the door and the door frame, it cannot effectively prevent the act of illegally intruding by deforming this plate-like member. There were drawbacks.
In addition, a cover that covers the entire door knob with a cover against unauthorized unlocking of the door lock is provided with a cover-like member for the door knob. In addition, there is a drawback that the operation is complicated and troublesome at the time of daily use.

  Therefore, the present invention can reliably detect and alarm that the door is illegally opened by utilizing the gap between the door and the door frame, or can also ensure the unauthorized unlocking of the door lock. An object of the present invention is to provide a door alarm device that can detect and alarm.

In order to achieve the above object, the door alarm device of the present invention comprises a closing member that closes the gap between the door and the door frame, and an attachment member for attaching the closing member to the door. The front side and the back side of the door are each configured with a front side member and a back side member, and a fixing member for connecting the front side member and the back side member is provided. In order to cope with various door thicknesses having different thicknesses, a cylindrical member attached to the front surface side member and a bolt member attached to the back surface side member are provided, and the bolt member The bolt member can be screwed through the collar by turning the lid attached to the collar, which is arranged in a collar having an inner groove that matches the longitudinal groove, with a longitudinal groove formed in the part. of A spring member is provided on the same side, and when the bolt member is screwed into the tubular member and tightened, the spring member is deformed and the head of the bolt member slides in the inner groove of the collar. When the amount of deformation of the spring member reaches a specified value, the collar portion is disengaged from the inner groove of the collar, and the rotational force of the collar is not transmitted to the bolt member. Is provided with an abnormality detection means for detecting unauthorized unlocking, and is provided with an alarm means that is actuated by a detection signal from the abnormality detection means .

If it is the alarm device for doors of the said structure, since it has the obstruction | occlusion member which plugs up the clearance gap between a door and a door frame, the act which operates illegally with respect to a dead bolt from this clearance gap can be prevented beforehand.
Further, the mounting member is composed of a front side member and a back side member that can be mounted on the front and back surfaces of the door, respectively, and a fixing member for connecting the front side member and the back side member is provided. Even if the gap with the frame is small and there is no room on the door end surface, the alarm device can be mounted using the front and back sides of the door.

  Further, since the attachment member is provided with an abnormality detection means for detecting unauthorized unlocking, and provided with an alarm means that is activated by a detection signal from the abnormality detection means, it is possible to reliably detect unauthorized unlocking. In addition, since the alarm means can be activated based on the posting signal, unauthorized opening of the door due to unauthorized unlocking can be prevented in advance, and the crime prevention has a higher effect.

In the door alarm device according to the present invention, the abnormality detecting means detects a deformation of the plate-like member due to an external pressure applied to the plate-like member, an abnormal sound generated when the door lock is illegally unlocked, and an abnormal vibration. It may be a sensor that detects the load applied to the front side member with respect to a fixing member that connects and fixes a member that is mounted on the front and back surfaces of the door.
By using these sensors, it is possible to accurately detect unauthorized means such as unauthorized unlocking using the gap between the door and the door frame, and picking the door lock, and prevent unauthorized opening of the door by unauthorized unlocking. Can be prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a perspective view of the outside of a door of an alarm device showing an embodiment of the present invention, FIG. 2 is a perspective view of the inside of the door, and FIG. 3 is a cross-sectional view.
The door alarm device 1 as an example of the embodiment of the present invention includes a closing portion 10 formed integrally with a mounting member as a closing member for closing a gap between the door D and the door frame F, and this closing portion. And a mounting member 20 for mounting 10 to the door D.

The closing portion 10 is formed of a thin plate-like member capable of closing the gap between the door D and the door frame F, and is mounted close to the end face of the door D so as to be positioned near the dead bolt included in the door lock L. To do.
The attachment member 20 includes a front surface side member 30 and a back surface side member 40 for mounting on the front and back surfaces of the door D, respectively. As shown in FIGS. 1 and 3, the surface-side member 30 is configured by a flat plate-like member, and the closing portion 10 is integrally provided at an end portion. A space is provided, and a sensor 60 as an abnormality detection means and an alarm device 70 as an alarm means are provided.

  In this embodiment, the surface side member 30 is a closed portion 10 that is provided by bending the end portion on the door frame side into an L shape as shown in FIG. A sensor 60 as an abnormality detection means is provided inside the surface side member 30. The sensor 60 in this example is provided with a contact-type sensor and a substantially Z-shaped guide member 11 from the vicinity of the closing portion 10. The end portion of the guide member 11 is disposed close to the sensor portion of the sensor 60. Therefore, when the closed portion 10 side is deformed, as shown in the sectional view showing the operation of the sensor in FIG. 4, the guide member 11 comes into contact with the sensor 60 and the sensor 60 is electrically turned on. ing.

In the example of FIG. 3, the back surface side member 40 is configured as a member that fixes the front surface side member 30 to the door D, and includes a box-shaped member and an alarm device 80 can be incorporated therein. When the alarm device 80 is not incorporated, as shown in the example of FIG. 5, the back surface side member 40 can be provided only in the door D, and the back surface side of the door D can be configured to be flat.
FIG. 6 is an exploded perspective view of the fixing member. As the fixing member 50 that connects the front surface side member 30 and the back surface side member 40, the distance between the front surface side member 30 and the back surface side member 40 according to the thickness of the door D. The bolt-shaped member 51 and the cylindrical member 52 that can be screwed with the bolt-shaped member can be configured.

  The fixing member 50 includes a bolt member 51 and a cylindrical member 52 that is screwed to the bolt member 51 in order to be able to cope with various door thicknesses having different thicknesses. The bolt member 51 is attached to the back surface side member 40 side, and the cylindrical member 52 is attached to the front surface side member 30 side. Therefore, the front side member 30 and the back side member 40 can be attached to the door D by using the fixing member 50. However, since the door D has a hollow structure in many cases, there is a possibility that the door D may be deformed if the fixing member 50 is fastened.

  For this reason, in this embodiment, a structure is adopted in which tightening is restricted by the fixing member 50 when a certain tightening force is reached. That is, the bolt member 51 has a longitudinal groove formed in the flange portion thereof, and is arranged in a collar 51a having an inner groove that matches the longitudinal groove. The collar 51a can be rotated by attaching the lid 51b to the collar 51a and turning the lid 51b.

Further, a spring member 51f is provided on the screw side of the bolt member 51 via a washer 51e, and these members 51a to 51f are accommodated in the holder 51g, and the holder 51g is attached to the back side member 40.
Then, the bolt member 51 is screwed into the cylindrical member 52, and the collar 51a is rotated via the lid 51b to tighten the bolt member 51. When the bolt member 51 is tightened, the bolt member 51 deforms the spring member 51f and the head of the bolt member 51 slides in the inner groove of the collar 51a and moves in the distal direction. When the amount of deformation of the spring member 51f reaches a specified value, the flange portion of the bolt member 51 is disengaged from the inner groove of the collar 51a, and the rotational force of the collar 51a is not transmitted to the bolt member 51. For this reason, since the tightening amount of the bolt member 51 can be regulated by the deformation amount of the spring member 51f, the deformation of the door D due to excessive tightening can be reliably prevented.

  Moreover, as a structure which prevents the deformation | transformation of the door D, as shown in FIG. 7, the supporting member 90 for supporting the inside of the door D can also be provided. The support member 90 includes an outer member 91 and an inner member 92. The inner member 92 is screwed into the inner side of the outer member 91. These screws are left-handed screws. The support member 90 fixes the door d to the head of the inner member 92 by caulking or the like, and after rotating the inside of the outer member 91 to adjust to the thickness inside the door D, the fixing bolt 93 is attached to the inner member 92. The inner member 92 is not rotated in reverse by the rotational force of the fixing bolt 93, and the deformation of the door D can be reliably prevented by the inner member 62 and the outer member 91.

Next, the configuration of the sensor 30 will be described.
As described above, the sensor 30 is configured to detect an abnormal sound generated during unauthorized unlocking (so-called picking) performed on the door lock, in addition to a sensor that detects deformation caused by an external force applied to the closing portion 10. It may be a sensor or a sensor that detects abnormal vibration that occurs during this unauthorized unlocking. Further, the sensor may be a sensor that detects a load at which the force at which the surface-side member 30 is to be peeled off is transmitted to the fixing member 50 and the fixing member 50 is pulled out due to an external pressure applied to the blocking portion 10. .

These sensors can be provided independently depending on the application, but in order to improve detection accuracy, sensors with multiple functions can be installed in combination, sensors with all functions can be installed, Various sensors can be provided in combination depending on the degree of detection accuracy.
With such a sensor, it is possible to detect abnormal sounds and abnormal vibrations that occur during picking, as well as hard means for the blocking portion 10 with a tool such as a bar. As such a sensor, for example, a built-in condenser microphone can be used to detect a specific frequency at the time of picking, and an abnormal sound such as a drill used when making a hole in the door for turning the thumb. Abnormal vibrations can also be detected.

As the alarm means electrically connected to these sensors 30, various forms can be adopted, and in addition to those that emit an alarm sound or an alarm light, for example, a fluorescent paint ejection device can also be adopted. Combinations of means are also possible.
The fluorescent paint spraying device includes a fluorescent paint storage tank, a discharge pump, a pipe, and the like, and the fluorescent paint can be jetted by sensing of the sensor 30. As a power source for the alarm means such as the fluorescent paint spraying device, a known built-in power source can be driven by, for example, a button type battery or the like, or a solar cell or the like can be adopted.

  Furthermore, as a warning means, the structure which blinks a red lamp, the structure of a siren etc. which can output the sound volume of 90 decibels or more as an audio | voice apparatus is also employable. Further, the substance contained in the ejection device may be a gas containing odor, and the liquid can be easily ejected in addition to the fluorescent paint as described above, and remains attached to the suspicious person. If it is a substance, various substances can be adopted.

  As an example of the alarm means, a radio signal can be emitted from the detection unit, and the alarm unit can be operated in another place by installing the receiver away from the receiver. In addition, it is possible to adopt a configuration in which a reporting means for a security company is incorporated, or a reporting means for a mobile phone or the like. As the receiving unit, an alarm device or the like directly attached to a power outlet can be employed. Further, the receiving unit may be configured to record a video near the door by connecting a video camera.

As the mounting member 20, in addition to the above-described embodiment, as shown in FIGS. 8 and 9, a structure provided integrally with a door lock, a handle or the like can be adopted. The attachment member 20 can be attached to the front side member 30 and the rear side member 40 by using a member for attaching a door lock, a handle or the like, and can be attached with good appearance.
In the case of unauthorized unlocking, in which a bar or other tool is inserted between the door and the door frame to create a clearance, the door frame side is also deformed, and the dead bolt is released from the locking hole on the door frame side. There is a fear. With respect to the deformation on the door frame side, as shown in FIG. 10, it is possible to adopt a configuration in which the locking portion expands and contracts with respect to the locking hole on the door frame side.

The locking portion 100 is formed with a movable portion 101 that can freely enter and leave the locking hole, and is normally locked inside the locking hole, and the door frame is deformed to release the locking state. In this case, it is configured to pop out by means such as a spring 102.
As the movable portion 101, a bellows-like configuration can be adopted.
By adopting these locking portions 100, even if the door frame is deformed, the dead bolt can be made difficult to come off from the locking portions 100, and the crime prevention effect becomes higher.

It is a perspective view of the door outer side of the alarm device for doors which shows the embodiment of this invention. It is a perspective view inside the door of the said alarm device for doors. It is sectional drawing of the said alarm device for doors. It is sectional drawing which shows the operating state of a sensor. It is sectional drawing which shows the other example of the alarm device for doors. It is a disassembled perspective view of the fixing member of the alarm device for doors. It is an exploded view of a support member. It is a perspective view of the door outer side of the alarm device for doors which shows the other embodiment of this invention. It is a perspective view inside the door of the said alarm device for doors. It is sectional drawing of the latching | locking part by the side of a door frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door alarm measure 10 Closure part 20 Mounting member 30 Front surface side member 40 Back surface side member 50 Fixing member 60 Sensor 70, 80 Alarm means D Door F Door frame L Door lock

Claims (4)

A closing member that closes the gap between the door and the door frame, and an attachment member for attaching the closing member to the door, and the attachment members are a front side member and a back side member that can be attached to the front and back surfaces of the door, respectively. And a fixing member for connecting the front side member and the back side member are provided.
The fixing member includes a cylindrical member attached to the front surface side member and a bolt member attached to the back side member in order to be able to cope with various door thicknesses having different thicknesses. A longitudinal groove is formed in the collar portion of the head, and the bolt member is screwed through the collar by turning a lid that is disposed in a collar having an inner groove that matches the longitudinal groove and attached to the collar. A spring member is provided on the screw side of the bolt member. When the bolt member is screwed into the tubular member and tightened, the spring member is deformed and the head of the bolt member is When the amount of deformation of the spring member reaches a specified value, the collar portion is disengaged from the inner groove of the collar, and the rotational force of the collar is not transmitted to the bolt member. Has the structure,
Further, the door alarm device is characterized in that the attachment member includes an abnormality detection means for detecting unauthorized unlocking, and an alarm means that is actuated by a detection signal from the abnormality detection means. Said an abnormality detection means for detecting non-unlocking, the sensor is a claim 1 Symbol placement of an alarm system for doors for detecting the deformation of the plate-like member by external pressure exerted on the plate-like member. Said an abnormality detection means for detecting the incorrect lock, abnormal sound generated when not unlocking for door lock, a sensor for detecting the abnormal vibration according to claim 1 Symbol mounting door alarm system. An abnormality detection means for detecting the incorrect lock, alarm to the fixing member for connecting and fixing member to be attached to the back side door table, door according to claim 1 Symbol mounting a sensor for detecting the load on the front side member apparatus.

Images