JP2007032069A - Equipment for preventing fraudulent opening of opening/closing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide equipment for preventing the fraudulent opening of an opening/closing body, which issues an alarm by detecting that the opening/closing body such as a window and a door is fraudulently opened, and which inhibits intrusion by devising the constitution of a key part and its periphery so that the operations of breaking a windowpane etc. and opening or destroying a lock can require a long period of time, and by employing such a constitution that the alarm is necessarily sounded on site when the unlocking and destruction operations are performed. <P>SOLUTION: This equipment for preventing the fraudulent opening of the opening/closing body comprises: the opening/closing bodies 50 and 55 for opening/closing an opening 101 of a building; a locking means 60 which inhibits the opening of the opening/closing body by being transferred to a locking state when the opening/closing body is in a closing position to close the opening, and which allows the opening of the opening/closing body by being transferred to an unlocking state; an unlocking inhibiting means 2 for inhibiting an unlocking operation by covering at least a part of the locking means; and a detection means 20 for detecting that the unlocking inhibiting means is removed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an unauthorized opening prevention device for an opening / closing body that detects that an opening / closing body such as a window or a door has been illegally opened and issues an alarm.

A thief (so-called empty nest aim) that invades through the windows and doors in the absence of a resident, breaks into the window glass, pierces the door, then unlocks and destroys the key, and enters the house. It is common to get away with the purpose of theft in a short time.
Security system (alarm system) that detects intrusion prevention measures and detects the opening and closing of windows etc. to prevent theft etc. due to unauthorized opening of windows and doors of buildings, houses and other buildings ) Have been proposed in the past.
As a physical intrusion prevention measure against the hollow nest aiming, for example, the window itself is strengthened, such as using a double-layer glass, or the unlocking is prevented using a special key. There is a problem that the cost is high, and it is difficult for individuals to bear the cost burden, which is unsuitable for ordinary households.
Also, as security systems, there are known systems (Patent Documents 1 and 2) that detect unauthorized opening / closing of windows using a magnetic sensor, optical sensor, etc., and notify the system management headquarters (Patent Documents 1 and 2). This is also unsuitable for ordinary households because of the construction and maintenance costs for installation and wiring. Also, in the conventional alarm system using sensors, it takes time to arrive at the site because an alarm is issued to the system management headquarters in a remote location and the person in charge receiving the alarm rushes to the site. At the time of arrival, intruders are often too late, for example, after they have reached their objectives and have already escaped.
In Patent Document 1, a predetermined reference pulse output from an oscillator is converted into a desired fixed waveform by a control circuit, and detection light corresponding to the fixed waveform is emitted from a light emitting element provided on one window member side. By comparing the strength of the electrical signal that is emitted from the light receiving element provided on the one window member and received by the light receiving element provided on the other window member with the above-mentioned fixed waveform by the determination circuit, the window member is obtained. An apparatus is disclosed that detects the opening and closing of the camera and activates an alarm when it is illegally opened. However, in such a conventional configuration, the alarm is not activated by opening the window member while allowing the light receiving element to receive the dummy light generated after the intruder decodes the pulse of the light emitted from the light emitting element by the reader. An intrusion may be attempted in this way. In this case, by opening a hole in the window glass and unlocking or destroying the key for locking the window member, the window member can be easily opened to enter the inside.
It is also effective to give up the intrusion by sounding an alarm sound so that it can be heard by the intruder at the crime scene, but recently it has been impossible to operate the alarm using advanced technology to prevent the sensors from operating The current situation is that the number of burglars who complete crimes after falling into the process is increasing.
Japanese Utility Model Publication No. 6-36177 JP 2004-220379 A

The criminal has a habit of giving up the intrusion when the window etc. cannot be opened in a short time, or escaping when the alarm sound is sounded at the crime scene, but the present invention uses this psychology to remove the window glass etc. The key part and its surroundings are devised so that it takes a long time to unlock and destroy the key, and the alarm is always sounded at the site when unlocking and breaking. To prevent intrusion.
When detecting / determining the opening / closing of a window using detection light consisting of a fixed pulse, a dummy fixed pulse generated by reading a fixed pulse of light emitted from the light emitting element is received by the light receiving element. As a result, there is a drawback in that the alarm device is inoperable when the window is opened and closed, but the present invention solves these problems by using random pulses.

In order to achieve the above object, the invention of claim 1 is characterized in that an opening / closing body that opens and closes an opening of a building, and that the opening / closing body shifts to a locked state when it is in a closed position for closing the opening. Locking means for prohibiting opening of the opening and closing body and allowing the opening and closing body to be opened by shifting to the unlocked state; and unlocking prohibiting means for covering at least a part of the locking means and prohibiting the unlocking operation; Detecting means for detecting that the unlocking prohibiting means has been removed.
The opening / closing body is a concept that includes not only windows and doors but also a wide range of openings provided on walls, floors, ceilings, etc. of buildings and the like, and opening / closing means for opening and closing passages. The key portion is a means for locking or unlocking the opening / closing body or the opening / closing body and the opening side regardless of the form. The unlocking prohibiting means is means for preventing the unlocking of the key portion by being attached to an attachment object such as an opening / closing body, an opening portion, or a key portion. The detecting means is a means having a function of detecting that the unlocking prohibiting means is removed regardless of optical, electrical or mechanical.
According to a second aspect of the present invention, in the first aspect, the detecting means is fixed to or engaged with the unlocking prohibiting means and is removed in conjunction with the unlocking prohibiting means being removed.
By making the unlocking prohibition means and the detection means into a unit, it is easy to attach and detach the attachment object.
The invention of claim 3 is characterized in that, in claim 1 or 2, it is detected that the detection means is configured to be detachable from the opening / closing body, the opening, or the unlocking prohibition means. To do.
Although the unlocking prohibition means and the detection means may be integrated in advance, there is room for expanding the range of the object to be attached by making them detachable.
According to a fourth aspect of the present invention, in the first, second, or third aspect, the detection means is configured to physically prevent the opening / closing body from being opened in a state where the detection means is fixed to an object to be attached. It is characterized by being.
Even if the unlocking means alone is removed from the key part by improperly fixing the detection means to the attachment object, the detection means functions to physically prevent the opening / closing body from being opened. Therefore, intrusion can be prevented.

According to a fifth aspect of the present invention, in the first to fourth aspects, the detection means includes a light emitting element that emits detection light, and the opening / closing body side or the opening side to reflect the detection light emitted from the light emitting element. And a light receiving element that receives the reflected light reflected by the reflection surface, and the light emitting element and the light receiving element by comparing and determining each pulse of the emitted light and the reflected light. A determination unit configured to determine whether or not the relative positional relationship between the opening and closing body or the opening is changed; and an alarm unit configured to operate based on an operation command signal from the determination unit, wherein the determination unit includes the relative position When the change of the relationship is determined, the operation command signal is output to activate the alarm means.
This is an example in which an optical configuration is employed as the detection means. The pulse to be used may be a regular waveform or a pulse having a random waveform.
A sixth aspect of the invention is characterized in that, in any one of the first to fifth aspects, the opening / closing body is at least one sliding door that slides parallel to the opening surface of the opening.
In the case of a sliding door, a case where the two doors move to each other and a sliding door and a case where only one moves are included.
The invention according to claim 7 is characterized in that the opening / closing body is a hinged door that rotates inward and outward about a hinge provided on the opening side.

In the inventions of claims 1 and 2, the unlocking means prohibits the unlocking of the locking means for locking the opening and closing body such as the window and the door in the closed position, while the unlocking prohibiting means is illegal (appropriate prior procedure). It is equipped with a detection means that activates the alarm by detecting that when it has been removed without being passed through), and effective anti-crime measures against intruders trying to unlock by opening a hole in the opening and closing body Become. The vacant nest escapes when an alarm sounds at the crime scene. Since the detection means is single, the material cost is also reduced. Difficult construction is also unnecessary. Once the dimensional relationship is adjusted, even an amateur can easily attach and detach.
In the invention of claim 3, since the detection means is a single unit and is configured to be removable from the opening / closing body, the opening, or the unlocking prohibition means, the detection means can be attached while responding to the difference in attachment object and attachment conditions. It becomes.
In the invention of claim 4, in a state where the detection means is fixed to the object to be attached, the detection means is configured to physically prevent the opening / closing body from being opened. Even when only the unlocking prohibiting means is removed from the key part by improperly adhering to the object, the detecting means functions to physically prevent the opening / closing body from being opened. Can be blocked. If the detection means is forcibly removed, an alarm is activated.
In the invention of claim 5, an optical configuration is adopted as the detecting means, and in this case, the condition when the light emitted from the light emitting element and reflected by the reflecting surface enters the light receiving element changes. Thus, since the determination circuit determines the occurrence of abnormality, even a slight positional fluctuation of the detection means can be detected as the occurrence of abnormality, and the detection accuracy can be improved. That is, the detection means uses the reflection of the detection light from the reflection surface provided on the opening and closing body, the opening side, and other parts, and if it is in close contact with the mounting object surface, the alarm device does not sound. It rings when it comes off. In addition, by fixing the detection means (light sensor unit) and the unlocking prohibition means (fixing hardware) to an object to be attached such as a window frame and covering the key portion, the key portion is protected even if the empty nest breaks the window. Cannot be operated. An alarm sounds if the unlocking prohibition means and the detection means are removed in an attempt to force a break.
In the sixth and seventh aspects of the invention, the opening / closing body to be an object of the present invention is a concept including all means for opening and closing the opening. Therefore, it includes a wide concept of opening and closing bodies regardless of the moving direction and moving path of the opening and closing body with respect to the opening.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
1 (a), (b), (c) and (d) are front views on the indoor side of a sliding type window as an object to which an unauthorized opening prevention device for an opening and closing body according to an embodiment of the present invention is attached, before attachment. FIG. 2 is a perspective view of the main part, a perspective view of the main part showing the attached state, and a plan cross-sectional view of the main part showing the attached state. FIG. FIG.
In this specification, a building or the like refers to a person or an article from an opening provided in a wall, a roof, a floor, a passage, or the like regardless of whether or not a person can live, store and store articles. Refers to a structure that can enter and exit. Opening of buildings, etc. is illegal such as theft or destruction by entering the inside of the building or inserting hands or tools, regardless of the purpose of entering or exiting people, luggage, lighting, ventilation, etc. It is a concept that includes a wide range of parts that enable various actions. Moreover, an opening / closing body is a concept including a door, a window member, and the like for opening and closing an opening provided in an outer wall, an inner wall, a passage or the like of a building, regardless of its shape or opening / closing structure.
In FIG. 1, the code | symbol 1 has shown the unauthorized opening prevention apparatus of this invention, and this unauthorized opening prevention apparatus 1 is by the rail 102 provided in the up-and-down inner wall surface of the opening part 101 provided in the wall part 100 of a building. It engages with at least a part of a key portion (locking means) 60 that locks two window members (slidable opening / closing bodies) 50 and 55 configured in a sliding manner to prevent unlocking from the outside. An unlocking prohibiting means 2 assembled to the unlocking prohibiting means 2, and a detecting means (sensor unit) 20 that is fixedly or detachably assembled to the unlocking prohibiting means 2 and detects that each window member is opened. Yes.
Window members 50 and 55 for opening and closing the opening 101 of the building include window frames 51 and 56 and window glasses 52 and 57 fitted in the respective window frames, and at least one of the window members is on the opening side. It is configured to be slidable along a rail 102 provided on the slab. Note that only one window member 51 may be configured to be slidable along a rail provided in the opening, and the other window member 55 may be configured not to be opened and closed.

As shown in the figure, a key portion 60 is disposed on the window frame portions 51a and 56a that overlap with each other when the window members 50 and 55 are closed. The key portion 60 includes a hook member 61 rotatably supported on one window frame portion 56a, and a locked portion 62 provided on the other window frame portion 51a and locked by a hook of the hook member 61. It is equipped with. The key portion 60 prohibits the opening of the window member by shifting to the locked state when the window members 50 and 55 are in the closed position for closing the opening portion 101, and the window member by shifting to the unlocked state. Is allowed to open.
The unlocking prohibiting means 2 includes a prohibiting member 2A composed of two prohibiting pieces 3 and 10 that are connected to each other in the direction of the arrow, and an attachment for removably attaching the prohibiting member 2A to one window frame portion 56a. And a member 2B. In this example, the prohibition pieces 3 and 10 are means for enclosing the entire key portion 60 so as not to be touched from the outside, and are oblong holes provided in one of the prohibition pieces (main prohibition pieces) 3 It is possible to insert the screw 11 into the circular hole 10a provided in 3a and the other prohibition piece (auxiliary prohibition piece) 10 and fix it in an arbitrary expansion / contraction position relationship. Therefore, the key portion 60 can be concealed by the forbidden pieces 3 and 10 corresponding to the difference in the thickness direction dimension of the window frame 56a. Further, once the dimensions are adjusted and fixed in accordance with the size of the window frame, it is not necessary to reset the dimensions every time it is attached and detached.
Note that the prohibiting member 2A does not necessarily need to cover the entire key portion 60. For example, it is sufficient to partially engage the hook member so as to prohibit the hook member 61 from rotating in the unlocking direction. . This is because it is difficult for an intruder to unlock the hook member 61 even if the hook member 61 is prevented from rotating. If the intruder forcibly destroys or removes the prohibiting member 2A, the detection means 20 is activated. This is because abnormalities can be detected.
Even if the structure of the key portion 60 is not a type in which the hook member rotates but a type in which the lock member linearly advances and retracts in the vertical direction, the lock member is prevented from moving in the unlocking direction similarly. The movement of the locking member may be prevented by the prohibiting member.
Further, the detecting means 20 is fixed to the outer surface of one of the prohibiting pieces 3 or is configured to be detachably fixed.
In the present embodiment, the inner side of each of the prohibition pieces 3 and 10 is opened as shown in the sectional view of FIG. 1D so that the key portion 60 in a locked state can be accommodated and concealed. Constitute.
In this example, the attachment member 2B can be fixed to the window frame 56a by fastening between the attachment piece 12 and the extension portion 10b for attachment provided at the end portion of the other prohibition piece 10 with the screw 13. Configured as follows.

Note that when the prohibiting member 2A is removed from the window frame 56a, the detecting means 20 does not need to firmly fix the prohibiting member 2A to the window frame with screws or the like. ) Etc. so that it can be easily attached and detached. In this case, it is very easy to attach and detach the prohibiting member that is performed on a daily basis.
Moreover, when the thickness of the window frame 56a is extremely small, only the main prohibition piece 3 assembled to the detection means 20 may be used without using the auxiliary prohibition piece 10. Or you may comprise so that it may fix by simple attachment or detachment means, such as a magic tape (trademark).
The detecting means 20 is fixed or engaged with the unlocking prohibiting means 2 to confirm that the unlocking prohibiting means 2 has been removed from the window frame and that the detecting means 20 has been detached from the window member alone. It has a function to detect.
Even if the detection means 20 is not necessarily fixed to the unlocking prohibition means 2, the detection means 20 is always configured to be detached from the window member or to be displaced when the unlocking prohibition means is removed. Therefore, it may be configured to detect the removal of the unlocking prohibiting means.
Furthermore, when the detection means 20 is disposed at the detection position shown in FIGS. 1C and 1D, the detection means 20 is fixed to the surface of the window glass 52 with an adhesive or the like so that it cannot be removed. In the state, it is possible that only the unlocking prohibiting means 2 is detached from the window frame 56a and the key portion 60 is unlocked. In this case, the detection means 20 fixed to the window glass 52 is attached to the window members 50 and 55. Opening will be physically blocked. That is, even if the unlocking prohibition means 2 is separated from the detection means 20 using some means, and the detection means 20 is fixed to the window member 50 side, the key portion 60 is operated to open the window member. Since the detection means 20 is fixed to one of the window members 50, it becomes impossible to move one or both of the window members in the opening direction, and the detection means 20 itself functions as a physical opening prevention means. Will be. That is, it is preferable to select a position where the opening of both the window members can be physically blocked under the above situation as the location of the detection means 20.

FIG. 2 is a block diagram showing the configuration of the optical detection means according to the embodiment of the present invention, and shows a longitudinal section.
This detection means 20 is optical, and each component is accommodated in a casing 21 made of a material having sufficient strength such as metal or resin. A space (open portion) 21a with the reflecting surface is provided on the front surface of the casing 21 so that detection light emitted from the light emitting element described later is reflected by the surface of the window glass 52, and the reflected light is reflected by the light receiving element described later. It is configured to receive light. The peripheral part of the space 21a functions as a light shielding part and shields extraneous light.
In the casing 21, a power supply device 22 using a battery or / and a commercial power supply, an oscillator 23 that generates a predetermined reference pulse, and a reference pulse output from the oscillator 23 are adjusted to an arbitrary waveform and output. The control circuit 24 that receives the pulse output from the control circuit 24, the light emitting element 25 that emits the detection light L1 corresponding to the pulse toward the surface of the window glass 52 at a predetermined angle, and the light emitting element 25. The reflection surface 26 provided on the window glass surface to reflect the detected light L1, the light receiving element 27 that receives the reflected light L2 reflected by the reflection surface 26, and the outgoing light L1 and the reflected light L2. Based on a determination means (determination circuit) 28 for determining the presence / absence of a change in the relative positional relationship of the window member with respect to the light emitting element and the light receiving element by comparing each pulse, and an operation command signal from the determination means 28. And a, and alarm 29 which emits an alarm sound activated Te. If necessary, a wavelength filter 31 that cuts disturbance components such as natural light is disposed after the light receiving element 27.
The determination unit 28 outputs an operation command signal to activate the alarm device 29 when a change in the relative positional relationship between the detection unit 20 and the window glass surface is detected and determined.
The reflective surface 26 is clear when the reflectance of the inner side surface of the window glass and other conditions have cleared a necessary and sufficient value (reflectance, etc.) for obtaining the reflected light L2 subjected to determination by the determination means 28. May be used as is, or when the conditions such as the reflectance of the glass surface are insufficient to obtain sufficient reflected light, a sheet-like or plate-like specular reflection on the window glass surface that will be the reflecting surface You may comprise so that material may be stuck.

As shown in FIG. 1 (d), the casing 21 is provided with mounting portions 21 c such as screw holes on both side surfaces, and the casing 21 is placed against the prohibiting piece 3 using either one of the mounting portions and screws. 21 is configured to be retrofitted. The reason why the mounting portions 21c are provided on both side surfaces of the casing 21 so as to be detachable from the prohibiting piece 3 is that when the front-rear positional relationship between the two sliding-type window members is reversed, This is so that it can be attached to any type. That is, not only when the key portion 60 is provided in the window frame portion 56a on the left side of the window member 55 located on the indoor side as shown in FIG. 1, but on the contrary to FIG. 1, the window member 50 located on the indoor side. The right-side window frame portion 51a can be attached correspondingly even when a key portion is provided.
In this example, the light emitting element 25 and the light receiving element 27 are supported in a predetermined opposing positional relationship by the support member 21b disposed inside the space 21a of the casing 21.
When the light emitting element 25 and the light receiving element 27 are arranged in a vertical position relationship, consideration is given to prevent direct incidence of sunlight incident on the upper side by arranging the light receiving element 27 on the upper side. To do. Alternatively, when the light receiving element is disposed on the lower side, sufficient light shielding means is provided on the window glass side so that sunlight does not directly enter the light receiving element located on the lower side. Alternatively, the light emitting element and the light receiving element may be arranged in a horizontal positional relationship.

In addition, although the pulse which comprises the emitted light L1 from a light emitting element is good also as a regular waveform, an intruder reads the waveform of the emitted light from a light emitting element, and reflects the reflected light L2 which consists of a dummy regular waveform. Since it is conceivable that the opening of the window cannot be detected by inputting to the light receiving element, a random pulse is preferable as the pulse to be used.
When using detection light based on random pulses, the control circuit 24 feeds back the pulse waveform output from the light emitting element 25 to the determination circuit 28, and the feedback pulse waveform and the light receiving element are obtained. It is configured to be able to determine whether or not the window is opened by comparing with an actual pulse waveform.
As the random pulse, there are a method of changing the output timing (period width) and a method of making only the voltage value of each pulse a random output, both of which can secure sufficient security.
Depending on the state of the glass surface as the reflecting surface 26, the voltage output from the light receiving element may drop due to irregular reflection from the glass surface even when the window is not opened, but the window is opened improperly. In some cases, an error is generated by configuring an alarm to be issued when the peak value of the random pulse waveform falls below a certain rate compared to the reference pulse, or when the pulse width and time on the horizontal axis do not match at a certain rate. Alarm can be prevented.

For example, FIG. 3A is an example in which only the voltage value is randomly output while keeping the period width of each pulse constant, and the light emitting element side waveforms (reference pulse waveforms) A, B, 3A, when the light receiving element side waveforms a, b, and c shown in the right diagram of FIG. 3A are obtained, for example, each pulse voltage on the light receiving element side is equal to the pulse voltage on the light emitting element side. When it becomes 50% or less, the alarm is activated as a voltage abnormality. Accordingly, in this example, the light receiving side waveforms a and b are determined to be normal because the voltage drop amounts are about 20% and 17%, respectively, but the waveform c is determined to be abnormal because it is 50% or less. In addition, in order to prevent malfunction, you may comprise so that an alarm may be actuated when an abnormal waveform continues twice or more.
FIG. 3B shows a waveform diagram relating to an example in which the period width of each pulse is changed, that is, an example in which the presence / absence of deviation of each pulse period is used as a criterion. For example, the period of each pulse is 20 When the difference is more than%, the occurrence of a cycle abnormality is judged and an alarm is output. In this example, since the amount of deviation between the pulses B and b and the amount of deviation between the pulses C and c are large beyond the allowable range, it is determined that an abnormality has occurred and the alarm is activated.
A bypass line from the control circuit 24 to the determination circuit 28 is optionally installed only when the pulse to be used is a random pulse. If the pulse is not random, the determination circuit only needs to have information about the standard reference pulse, and the bypass line is not necessary.

In the present invention, in order to unlock the key portion 60 by a person who opens the window member illegally and tries to enter the inside, the window member 50 (key portion) is opened by opening a hole in the window glass. 60), the detection means 20 can be removed from the inner surface of the window glass 52 of the window member 51 in conjunction with this, or the detection light can no longer be received by the light receiving element 27 by causing a displacement. When the detection light having a waveform different from that of the reference pulse is received, the determination circuit 28 determines the occurrence of abnormality and activates the alarm device 29. The alarm device 29 not only sounds an alarm sound in the vicinity of the installation location of the detection means 20 that is a crime scene, but also notifies the occurrence of an abnormality to a remote management center.
Even when the detection means 20 is to be detached alone, the position and angle of the reflecting surface that reflects the light emitted from the light emitting element 25 and the distance between the light emitting / receiving element and the reflecting surface are different. The incident angle to the light receiving element 27 is changed, and as a result, occurrence of abnormality is determined.
The reflective surface 26 does not need to be a highly reflective material such as glass, and can be used as a reflective surface if it is coated so that a certain degree of reflectance can be ensured even if it is an iron plate or a wooden plate. it can. In this case, the determination circuit 28 may be configured such that the reference for determining the presence or absence of abnormality can be adjusted according to the reflectance of the reflecting surface. However, if the reflecting surface is a mirror surface, a sufficient amount of reflected light can be secured, so that the detection accuracy can be stabilized.
In short, it may be configured such that when the detection means 20 is removed from the window member, the detection light does not enter the light receiving element, or the amount of light varies.

A battery or a commercial power source can be used as the power source 22 of the detection means 20, but a lock (lock type) switch is used as a switch for turning the power source 22 on and off, and is used exclusively by authorized users and administrators. The power switch cannot be turned on / off unless it is operated by inserting the key into the key hole, so that an intruder who has made a hole in the window glass inserts a hand or tool into the window and turns off the power switch. It becomes impossible to fall into inoperability. However, in order to prevent an intruder from cutting off the power cord or disconnecting the plug from the outlet, the power supply to the detection means is not cut off. If it is configured to switch to the built-in battery in this case, it is possible to prevent the detection means from being stopped. In addition, when using a built-in battery together, it is comprised so that a built-in battery may be charged by electric power feeding from a commercial power source in the state where a power switch is ON. If the power switch is turned off, the built-in battery is not charged and the battery is not consumed.
In addition, when the power is turned off by means other than the power off using a key, it is preferable that the alarm device is activated.
When it is not necessary to set an alarm, the window member can be normally opened and closed by turning off the power switch.
If you do not use a power switch with a key, you can turn off the detection means by inserting your hand through a hole in the window glass and disconnecting the power cord or removing the plug from the outlet. In this case, however, the alarm device is configured to operate when the power is turned off, and the built-in battery is also used in addition to the commercial power supply. When the commercial power is turned off, power is supplied from the built-in battery to the detection means. What is necessary is just to comprise.

The device for preventing unauthorized opening of the opening / closing body of the present invention having the above-described configuration is a combination of the unlocking prohibiting means 2 and the detecting means 20 with respect to the window frame and the like after the window member is closed and the key portion 60 is locked. The assembly is completed by assembling the attachment and then turning on the power. When the reflecting surface 26 made of a sheet or the like is fixed to the window glass surface in advance, this apparatus is assembled so that the positional relationship between the light emitting / receiving elements with respect to the reflecting surface 26 is appropriate. After the completion of setting by turning on the power, the unlocking means 2 cannot be unlocked unless the unlocking prohibiting means 2 is removed, but if the unlocking prohibiting means 2 is forcibly removed or broken, it is detected. Since a change appears in the amount of received light and the incident angle with respect to the light receiving element 27 in the means 20, the occurrence of abnormality is detected and determined, and the alarm is activated.
Therefore, it is impossible to unlock the key portion 60 after the window glass 57 is illegally broken and opened as well as the window glass 52.
Even when a simple attaching / detaching means such as Velcro (registered trademark) is used as a means for fixing the unlocking prohibiting means 2 to the window frame, the unlocking prohibiting means 2 may be removed from the window frame, Since the alarm is activated when the shift occurs, the security level does not decrease, but daily attachment / detachment work becomes easy.

In the above embodiment, the window member 50 having the reflection surface 26 is configured to be openable and closable. However, the window member 50 side is fixed to the wall portion 100 (opening portion 101) and only the other window member 55 side is provided. Can be opened and closed, the unlocking prohibiting means 2 and the detecting means 20 can operate normally. In addition, when the opening is configured to be opened and closed only by a single window member, the detection means 20 may be disposed in close contact with the reflective surface provided at the opening (fixed side). Conversely, it may be arranged in close contact with the reflection surface provided on the side of the window member that opens and closes.
If the detection means 20 is removed together with all or a part of the window glass to which the detection means 20 is attached, the alarm may not be activated, but it takes a long time to start and complete such work. Therefore, it is difficult to complete the offense because the time that the normal vacant criminal is allowed is timed up.
It should be noted that the object to which the unlocking prohibiting means 2 of the present invention is attached is applicable not only to the sliding-type window member but also to a key portion of a window (folding door) that is configured to be opened and closed around a hinge. Can do. Further, the present invention can be applied not only to a window but also to a door that opens and closes an opening, and other open / close bodies in general.

(A), (b), (c), and (d) are front views on the indoor side of a sliding-type window as an object to which an unauthorized opening prevention device for an opening and closing body according to an embodiment of the present invention is attached, and the essentials before installation. It is a fragmentary perspective view, the principal part perspective view which shows the attached state, and the plane cross-sectional view of the principal part which shows an attachment state. It is a figure which shows the structure of an example of the detection part which comprises an unauthorized opening prevention apparatus. (A) And (b) is a wave form diagram which shows the example which detects abnormality, when a random pulse is used.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Unauthorized opening prevention device, 2 ... Unlocking prohibition means, 2A ... Prohibited member, 2B ... Mounting member, 3 ... Prohibited piece, 10 ... Prohibited piece, 10a ... Round hole, 11 ... Screw, 13 ... Screw, 20 ... Detection Means, 21 ... casing, 21a ... space (open part) with reflection surface, 21b ... support member, 22 ... power supply device, 23 ... oscillator, 24 ... control circuit, 25 ... light emitting element, 26 ... reflection surface, 27 ... light reception Element, 28 ... judgment circuit, 29 ... alarm, 31 ... wavelength filter, 3a ... long hole, 50, 55 ... window member, 51, 56 ... window frame, 51a, 56a ... window frame part, 52, 57 ... window glass , 60 ... key part (locking means), 61 ... hook member, 62 ... locked part, 100 ... wall part, 101 ... opening part, 102 ... rail.

Claims (7)

  An opening / closing body that opens and closes an opening of a building, and when the opening / closing body is in a closed position that closes the opening, the opening of the opening / closing body is prohibited and the unlocked state is shifted by shifting to the locked state. A locking means for allowing the opening / closing body to be opened, an unlocking prohibiting means for covering the at least part of the locking means and prohibiting the unlocking operation, and detecting that the unlocking prohibiting means has been removed. And an unauthorized opening prevention device for the opening and closing body, comprising: a detecting means.   2. The device for preventing unauthorized opening of an opening / closing body according to claim 1, wherein the detecting means is detached or interlocked with the unlocking prohibiting means when the unlocking prohibiting means is removed.   The apparatus for preventing unauthorized opening of an opening / closing body according to claim 1 or 2, wherein the detection means is a single unit and is configured to be removable from the opening / closing body, the opening, or the unlocking prohibiting means.   4. The structure according to claim 1, wherein the detection means is configured to physically prevent the opening / closing body from being opened in a state where the detection means is fixed to an object to be attached. The device for preventing unauthorized opening of the opening and closing body as described. The detection means includes: a light emitting element that emits detection light; a reflective surface provided on the opening / closing body side or the opening side for reflecting the detection light emitted from the light emitting element; and A light receiving element that receives the reflected light reflected by the light source, and a change in the relative positional relationship of the opening / closing body or the opening with respect to the light emitting element and the light receiving element by comparing and determining each pulse of the emitted light and the reflected light. Determination means for determining the presence or absence, and alarm means that operates based on an operation command signal from the determination means,
The opening / closing body according to any one of claims 1 to 4, wherein the determination unit outputs the operation command signal when the change in the relative positional relationship is determined, and operates the alarm unit. Unauthorized opening prevention device.   The unauthorized opening prevention device for an opening / closing body according to any one of claims 1 to 5, wherein the opening / closing body is at least one sliding door that slides parallel to the opening surface of the opening.   6. The unauthorized opening prevention of the opening / closing body according to any one of claims 1 to 5, wherein the opening / closing body is a hinged door that rotates inward and outward about a hinge portion provided on the opening side. apparatus.

Images