JP3458137B2 - Crescent with security function and security system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a crescent with a crime prevention function and a crime prevention system.

[0002]

2. Description of the Related Art Crescent with a crime prevention function and a crime prevention system having a function for preventing the crime of invading a house by illegally opening a window frame such as an aluminum sash.
A wireless door tightening confirmation system as disclosed in JP-A-7-134790 is already known.

In this wireless door tightening confirmation system, a magnet is attached to the tip of an operation handle for opening and closing provided on a crescent body attached to one window frame, while the other window frame adjacent to this operation handle is attached. Attach a wireless transmitter with a built-in reed switch that operates with a magnet, and activate the alarm device by activating the wireless transmitter by detecting the movement of the magnet that accompanies the lock / unlock operation of the operating handle. Was configured as.

[0004]

Therefore, it is necessary to dispose a wireless transmitter with a built-in reed switch on the sash frame independently of the crescent body, which has a harmful effect on the appearance of the window frame. Also, since the wireless transmitter is installed separately from the sash frame, it is clear from the outside that the sash frame has a crime prevention function through the transparent glass, and an unauthorized intruder can detect this. It was possible to evade it and break into another window frame or door, or break the window glass to remove the wireless transmitter or crescent. In addition, because it is necessary to separate and deploy an independent wireless transmitter separately from the crescent, the number of elements that make up the security system increases,
There has been a problem that the cost of laying a security system is relatively high.

Moreover, unless the relationship between the relative mounting positions of the crescent body and the wireless transmitter, that is, the relative positional relationship between the magnet and the reed switch is strictly defined, the wireless transmitter is operated at an appropriate timing. Since it is not possible to do so, it was troublesome that the installation work of the wireless transmitter and the crescent body at the time of construction had to be done precisely.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the prior art, to obviate the need to install an independent wireless transmitter on the window frame, to be inconspicuous, and to reduce the number of components of the crime prevention system. The purpose of the invention is to provide a crescent with a crime prevention function and a crime prevention system that can be easily installed during construction.

[0007]

The crime prevention crescent of the present invention has a crescent body provided on one window frame and a locking piece provided on the other window frame, and the crescent body is An engaging member that engages with the locking piece and an operation handle that engages and disengages the engaging member with the locking piece are provided, and a transmitting circuit for transmitting a radio wave inside the crescent body, and power for driving the oscillation circuit, and opening and closing operation detected to actuate only moment when this detection is performed outgoing circuit with the engagement member mechanically detects the rotational position immediately before the operation handle to be disengaged from the engaging piece The switch and the switch are integrated, and the engaging member is made of a conductive material.
The operation handle is provided by a tapered arc-shaped ridge protruding from the
Formed integrally with the dollar, the operation handle is the crescent body
To the Crescent body while being electrically insulated against
It is mounted so that it can rotate freely and the operating handle
It has a configuration characterized in that it is connected to a road as an antenna .

As described above, since the transmitting circuit, the power source and the opening / closing operation detection switch are integrally provided inside the crescent body, it is not necessary to provide a wireless transmitter independent of the crescent body on the window frame, and the window frame is eliminated. The aesthetics of are improved. Moreover, it is practically impossible for an outside intruder to discover that Crescent Honmono has a crime prevention function, and the intruder avoids this and tries to invade from another window frame or door. Is also resolved. Further, since the number of independent elements required for constructing the security system is reduced, an increase in cost when installing the security system is suppressed. Furthermore, since the open / close operation detection switch is built into the crescent body itself, unlike the conventional technology where a handle switch detection reed switch or the like is provided on the window frame independently of the crescent body during construction. The rigorous positioning work of the device in 1 is also unnecessary. Also,
The open / close operation detection switch mechanically detects the rotational position of the operation handle immediately before the engaging member is disengaged from the locking piece, and activates the transmission circuit only at the moment when this detection is performed. As a result, the power consumption by the battery is small, and the power source such as the battery built in the crescent body can be used for a long period of time without replacement. Further, the engaging member is formed integrally with the operating handle by the tapered arc-shaped ridge protruding from the operating handle made of a conductive material, and the crescent is electrically insulated from the crescent body. rotatably mounting the operating handle to the main body, and configured to be used as an antenna by connecting the operating handle to the originating circuit, since the operating handle is also used as an antenna, a separate coil antenna or the like Crescent body The entire structure is simplified as compared with the case where it is built in. Also, unlike the configuration in which the coil antenna etc. are built in the crescent body, there is no concern that the antenna will be shielded by the crescent body casing, so it is possible to form the crescent body casing with a sturdy metal material. It is also advantageous in terms of physical strength. Moreover, since the operation handle that functions as an antenna is attached to the crescent body in an electrically insulated state, even if the crescent body is fixed to one window frame with a screw, the operation handle and aluminum There is no electrical continuity with the window frame such as the sash, and the impedance of the antenna formed by the operating handle is maintained at a low value, so the transmitter circuit can be operated appropriately with a small amount of power consumption, Also,
Since the impedance of the antenna does not fluctuate, radio waves can always be transmitted in a stable state. In the locked state, the operation handle made of a conductive material is electrically connected to the aluminum sash or the like forming the other window frame through the above-mentioned engaging member and locking piece. However, the opening / closing operation detection switch is located at the rotational position of the operating handle immediately before the engaging member is disengaged from the locking piece, that is, when the tapered arc-shaped ridge of the operating handle is not in contact with the locking piece. The window frame does not act as the impedance of the operating handle when the transmitting circuit is operating.

The crime prevention system of the present invention comprises the above-described crime prevention crescent and an alarm device which operates by receiving a radio wave from a transmission circuit of this crime prevention crescent.

Since the alarm device is constructed as a unit separate from the crime prevention crescent, it can be installed in any place inside or outside the house as long as the radio wave from the transmitting circuit can reach it.

[0011]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing an appearance of a crime prevention crescent 1 of an embodiment to which the present invention is applied, and FIGS. 2 to 3 and 5 show a crime prevention crescent 1 following an assembly process of the crime prevention crescent 1. 2 is a side view and a cross-sectional view showing the internal structure of FIG.

The crime prevention crescent 1 of this embodiment is
As shown in FIG. 1, it is generally constituted by a crescent body 2 and a locking piece 3.

Of these, the crescent body 2 is fixedly provided on one window frame 4 as shown in FIG. 1, and is engaged with the locking piece 3 fixed to the other window frame 5. When,
An operation handle 7 for engaging and disengaging the engagement member 6 with respect to the locking piece 3 is provided.

The operating handle 7 is made of a conductive material such as aluminum alloy, and the engaging member 6 formed of a tapered arc-shaped protrusion is integrally formed with the operating handle 7 as shown in FIG. ing.

The back side of the operating handle 7 is shown in FIG.
As shown in FIG. 2 (b), a shaft 8 made of an electrically conductive material is projected and fixed, and a through hole is formed in the thick portion of the central portion of the casing 9 that constitutes the main portion of the crescent body 2. 10 is rotatably supported by a stepped sleeve 11 made of an insulating material such as synthetic resin.

The casing 9 is formed of a metal material equivalent to that of the operating handle 7 in consideration of mechanical strength, and the casing 9 and the operating handle 7 are securely provided with a stepped sleeve 11 serving as an insulating material. It is insulated.

A disk-shaped rotary cam 12 made of a conductive material is provided at the tip of the shaft 8 with respect to the shaft 8 as shown in FIGS. 3 (a) and 3 (b). It is fixed integrally in a non-rotatable state. Further, the rotary cam 12 is provided with an arc-shaped elongated hole 13 extending in the circumferential direction, and the rotational position regulating pin 14 is planted in the thick portion of the central portion of the casing 9 and protrudes into the elongated hole 13. The rotation limit of the rotary cam 12 and the operation handle 7 with respect to the casing 9 is regulated by the engagement relationship between the rotary cam 12 and the elongated hole 13.

The operating handle 7 is rotated 180 degrees counterclockwise from the fully closed position shown in FIG. 3 (a) with reference to the directionality in FIG. 3 (a), or from the fully closed position shown in FIG. 18 clockwise with reference to the directionality in Figure 1.
It can rotate in the range of 0 °. Rotational position control pin 14
Is made of an insulating material such as synthetic resin,
The rotary cam 12 and the casing 9 are not electrically connected to each other via the rotational position regulating pin 14. Also, the rotating cam 12
Since the collar portion of the stepped sleeve 11 is interposed between the rear surface of the rotary cam 12 and the thick portion of the casing 9, the rear surface of the rotary cam 12 does not directly contact the casing 9 and become conductive.

As shown in FIGS. 3 (a) and 3 (b), a pin 15 made of an insulating material such as synthetic resin is integrally fixed to the surface of the rotary cam 12 so as to be inside the casing 9. The other end of the coil spring 17 whose one end is locked to the planted spring locking pin 16 is locked.

The coil spring 17 functions as a fulcrum crossing spring for urging the operation handle 7 to rotate, and when the rotation position of the operation handle 7 with respect to the casing 9 is in the rotation position near the closed position, that is, the rotation of the operation handle 7. When the position is in the range of 0 ° to 90 ° counterclockwise with reference to the fully closed position of FIG. 3A, the operation handle 7 is turned to the fully closed position and the clockwise direction of FIG. When the rotational position of the operation handle 7 with respect to the casing 9 is in the rotational position near the open position, that is,
When the rotation position of the operation handle 7 is in the range of 90 ° to 180 ° in the counterclockwise direction with reference to the completely closed position of FIG. 3A, the operation handle 7 is turned to the completely opened position as shown in FIG. Energize counterclockwise in a).

The fulcrum beyond spring function of the coil spring 17 prevents the operating handle 7 from being stopped carelessly at the neutral position. The fully opened position referred to here is the rotational position of the operating handle 7 when the end portion 13a of the elongated hole 13 contacts the rotational position regulating pin 14 in FIG. 3A, that is, FIG. It is a rotational position of the operation handle 7 when the operation handle 7 is rotated 180 ° from the state of FIG. 1.

FIGS. 4A and 4B are views showing the appearance of the circuit board 18 built in the casing 9 of the crescent body 2.

As shown in FIGS. 4 (a) and 4 (b), the circuit board 18 has a transmitting circuit 19 for transmitting radio waves, and a button serving as a power source for driving the transmitting circuit 19. The battery 20 and the opening / closing operation detection switch 21 for detecting the operation of the operation handle 7 to activate the transmitting circuit 19, and the window frame 4 from one side to the crescent body 2
A tampering detection switch 22 for activating the transmitting circuit 19 by detecting that the tampering has been removed.

The open / close operation detection switch 21 has a lead 21a.
It can be constituted by a normally open micro switch or the like which is turned on only when is pressed, and the tampering detection switch 22 includes the lead 22a.
It can be constituted by a normally-closed micro switch or the like which is turned on only when is released from the pressed state.

Further, the terminal 25 fixed to the back surface side of the circuit board 18 is electrically connected to the signal output portion of the transmission circuit 19 arranged on the front side of the circuit board 18. The printed wiring pattern and the like on the circuit board 18 are not directly related to the gist of the present invention, and thus the description thereof is omitted.

FIG. 6 is a block diagram schematically showing the electrical connection relationship of the parts arranged on the circuit board 18.
Open / close operation detection switch 21 and unauthorized operation detection switch 22
As shown in FIG. 6, the button battery 20 serving as a power source
And the transmission circuit 19 are connected in parallel, and at least one of the switches is turned on, that is, the operation handle 7 is operated or the crescent body 2 is removed from the window frame 4. In this case, the transmission circuit 19 is automatically activated.

The configuration of the transmission circuit 19 is substantially the same as that of a transmitter used in a keyless entry system of an automobile or the like, and therefore its explanation is omitted here. In addition,
The keyless entry system referred to here is a system in which a door lock of an automobile is remotely operated from the outside to a locked / unlocked state by a transmitter mounted on a key of the automobile.

The state where the circuit board 18 is mounted on the casing 9 of the crescent body 2 is shown in FIGS. 5 (a) and 5 (b). As shown in FIGS. 5 (a) and 5 (b),
The circuit board 18 is inserted from the back side of the casing 9 with the tampering detection switch 22 facing outward, and its four corners are fixed to the board receiving portion 23 of the casing 9 by screws. Opening 24 provided in the center of the circuit board 18
When assembling the circuit board 18, the circuit board 18
By accurately grasping the relative positional relationship between the lead 21a and the terminal 25 of the opening / closing operation detection switch 21 and the rotary cam 12 on the casing 9 side provided on the rear surface side of the casing, smooth assembly is possible while avoiding interference between the two. This is a viewing window for working.

Terminals 2 provided on the back side of the circuit board 18
As shown in FIG. 5A, the reference numeral 5 elastically slidably contacts the outer circumference of the rotary cam 12 to electrically connect the signal output portion of the transmission circuit 19 and the operation handle 7. Operation handle 7
Is formed of a conductive material such as an aluminum alloy as described above, and the operation handle 7 electrically connects to the transmission circuit 19 to function as an antenna (see FIG. 6). Actually, in addition to the operating handle 7, the human body operated by holding the operating handle 7 also functions as an antenna. Therefore, this point should be taken into consideration when designing the transmission circuit 19.

The outer peripheral portion of the rotary cam 12 is shown in FIG.
A protrusion 12a as shown in (a) is provided.
Then, when the projection 12a presses the lead 21a of the opening / closing operation detection switch 21 in accordance with the rotational movement of the rotary cam 12 caused by the opening / closing operation of the operation handle 7, the opening / closing operation detection switch 21 changes from the OFF state to the ON state. This state is maintained until the protrusion 12a changes and the protrusion 12a passes the tip of the lead 21a, and the oscillation circuit 19 operates.

The protrusion 12a presses the lead 21a of the opening / closing operation detection switch 21 because the operation handle 7 is moved from the completely closed position as shown in FIG. 5A based on the directionality in FIG. 5A. Counterclockwise approximately 90 °, or as shown in FIG.
At the stage where the operation handle 7 is rotated clockwise by approximately 90 °, that is, the timing immediately before the engaging member 6 of the operation handle 7 is disengaged from the locking piece 3.

As shown in FIG. 1, since the engaging member 6 is formed by a tapered arc-shaped protrusion, the engaging member 6 is rotated when the operation handle 7 is rotated to a position of about 90 °. Bending part 3 of the taper surface 6a and the locking piece 3
A certain gap is generated between the inner side of a and the both sides to be insulated. Therefore, the impedance of the locking piece 3 and the window frame 5 made of aluminum alloy is not added to the operation handle 7 that functions as an antenna when the transmission circuit 19 operates.
Since the casing 9 of the crescent body 2 is completely insulated from the operation handle 7 by the stepped sleeve 11, the impedance of the aluminum alloy casing 9 and the window frame 4 should be added to the operation handle 7 as an antenna. Nor.

For this reason, the impedance of the operation handle 7 as an antenna is suppressed to a low value, radio waves can be output with a little power consumption, and there is no impedance fluctuation, so a stable transmission state is secured. be able to.

The fact that the window frames 4 and 5 can be opened by actually releasing the lock is that the operation handle 7 is rotated by 90 ° or more and the engagement between the engaging member 6 and the locking piece 3 is completely released. The operation timing of the opening / closing operation detection switch 21, that is, the operation timing of the transmission circuit 19 is
Slightly earlier than that. That is, the window frames 4 and 5 cannot be opened without operating the transmission circuit 19.

In this embodiment, since the locking piece 3 is made of the same aluminum alloy as the operation handle 7 and the casing 9, the impedance of the locking piece 3 and the window frame 5 becomes the operation handle 7 as an antenna. In order to prevent addition, it is necessary to strictly set the operation timing of the opening / closing operation detection switch 21 as described above.
When the insulating member is made of synthetic resin or the like, there is no problem of impedance increase due to the contact between the engaging member 6 and the locking piece 3, so the operation timing of the opening / closing operation detection switch 21 is set to the engaging member. It does not matter at any time as long as it is a stage before the fitting between 6 and the locking piece 3 is completely released.

In the crescent main body 2 thus constructed, the screws 27 are inserted from the front side into the through holes 26 formed at both upper and lower ends thereof, and the one window frame 4 is provided as shown in FIG. It is fixed.

By fixing the crescent body 2 to the window frame 4, the lead 22a of the tampering detection switch 22 provided on the circuit board 18 is pressed by the abutment surface of the window frame 4, and the normally closed tampering operation is performed. Detection switch 2
2 is opened (OFF) in the state as shown in FIG. Therefore, as long as the crescent body 2 is normally fixed to the window frame 4, the tampering detection switch 22 does not operate and the transmitting circuit 19 does not react.

However, if an intruder from the outside tries to unlock the window frames 4 and 5 by removing the crescent body 2 from the window frame 4, the crescent body 2 causes the window frame 4 to move.
When the operation handle 7 is opened / closed, since the pressing force acting on the lead 22a is lost by separating from the contact surface of the contact 22 and the tampering detection switch 22 automatically returns to the normally closed state (ON). The transmitting circuit 19 operates in the same manner as.

FIG. 7 shows an alarm device 2 which operates by receiving a radio wave from a transmitting circuit 19 incorporated in the crime prevention crescent 1.
8 is a perspective view showing the external appearance of FIG. 8, and FIG. 8 is a functional block diagram showing the internal structure of the alarm device 28 in a simplified manner. The crime prevention system according to the present embodiment is provided with the crime prevention crescent 1 and the alarm device. And 28.

As shown in FIGS. 7 and 8, the alarm device 28 includes a receiving circuit 29 for receiving the radio wave from the transmitting circuit 19 and a timer that operates for a set time by using the detection of the radio wave by the receiving circuit 29 as a stimulus. The circuit 30 and the volume 31 for adjusting the power supplied to the alarm speaker 32 are provided, and the user can freely operate the timer setting switch 33 and the volume setting switch 34 for setting the operating time of the timer circuit 30. Thus, the alarm device 28 is attached to the outside of the casing. Reference numeral 35 in FIG. 7 is a code for connecting the alarm device 28 to an indoor power source for home use, reference numeral 36 is an ON / OFF switch for setting activation / deactivation of the alarm device 28,
Further, reference numeral 37 is a pilot lamp.

The crime prevention crescent 1 of this embodiment is not provided with a special power switch for prohibiting the operation of the transmitting circuit 19, so that it is necessary to open and close the window frames 4 and 5 in response to the request of the housekeeper. The open / close operation detection switch 21 reacts unconditionally even when the lock / unlock operation of the crime prevention crescent 1 is performed, and the transmission circuit 19 is activated each time.
The alarm device 2
Turn off the ON / OFF switch 36 on the 8 side, or
If the volume is set low, the alarm speaker 32
It is possible to prohibit the silent alarm output from. Of course,
Volume setting switch 34 and ON / OFF switch 3
A switch with a volume may be used instead of 6.

Further, the volume of the alarm output itself can be freely adjusted by operating the volume setting switch 34, and the operating time of the alarm device 28, that is, the alarm speaker 3 can be adjusted.
The alarm output duration from 2 is set by the timer setting switch 3
It is possible to freely adjust by 3

If a plurality of crime-preventing crescents 1 having the same frequency of the transmitted radio waves are arranged in the window frame portions of the same house, only one alarm device 28 is arranged. It is possible to accurately detect that the crime prevention crescent 1 of the window frame has been opened / closed. Also,
A plurality of crime prevention crescents 1 having different frequencies of radio waves to be transmitted are arranged in the window frame portions of the same house, and the alarm device 28 is provided with multiple channels, and the alarm device 28 is provided with an alarm lamp corresponding to each frequency. By doing so, it is possible to specify which window frame has the crime prevention function crescent 1 operated. Further, by adopting the Crescent 1 with a crime prevention function that emits radio waves of frequencies different from those used in adjacent houses, malfunction of the alarm device 28 due to duplication of radio waves between adjacent houses can be prevented in advance. can do.

As a means for identifying radio waves, known methods such as AM / FM modulation and PCM (pulse code modulation) can be used.

It is also possible to combine the operation handle 7 and the casing 9 without insulating the operation handle 7 and the casing 9 and use them as an antenna for transmission. In this case, the casing 9 and one of the window frames 4 are insulated with a rubber sheet or the like, and an insulating sleeve made of synthetic resin or the like is interposed between the casing 9 and the screw 27 to provide the oscillator circuit 19
Is designed according to the combined impedance of the operating handle 7 and the casing 9.

As the opening / closing operation detection switch 21 and the illicit operation detection switch 22, well-known detection means such as a photo sensor or a proximity switch can be used in addition to the micro switch, but in terms of power consumption. Therefore, it is desirable to use mechanically actuated contacts such as microswitches. In the above-described embodiment, the operation of the operation handle 7 is prohibited from stopping at the neutral position by the action of the coil spring 17 that functions as a fulcrum crossing spring, so that the operation time of the opening / closing operation detection switch 21 is suppressed to an extremely short time. It is possible and very convenient in terms of power saving.

[0047]

According to the crime prevention crescent of the present invention, all the components necessary for achieving the crime prevention function, such as the transmission circuit, the power supply, and the opening / closing operation detection switch, are integrally arranged inside the crescent body. Therefore, it is not necessary to install a wireless transmitter, a reed switch, or the like, which is independent of the crescent body, on the window frame, and the appearance of the window frame is improved. Moreover, it is practically impossible for an outside intruder to discover that Crescent Honmono has a crime prevention function, and the intruder avoids this and tries to invade from another window frame or door. Is also resolved. Further, since the number of independent elements constituting the crime prevention system is also reduced, the cost increase when installing the crime prevention system is suppressed. Furthermore,
Since the open / close operation detection switch is built into the crescent body itself, unlike the conventional technology where a reed switch etc. for handle operation detection is provided on the window frame independently of the crescent body, it is for handle operation detection No need for troublesome work such as positioning of the reed switch and the crescent body, and the installation work during construction becomes easy. The open / close operation detection switch mechanically detects the rotational position of the operation handle immediately before the engagement member is disengaged from the locking piece, and activates the transmission circuit only at the moment when this detection is performed. The operation consumes little power, and the power source such as the battery built in the crescent body can be used for a long time without replacement. Further, since the operation handle made of a conductive material is also used as the antenna, the entire structure is simplified as compared with the case where an independent coil antenna or the like is built in the crescent body. Also, unlike the configuration in which the coil antenna etc. are built in the crescent body, there is no concern that the antenna will be shielded by the crescent body casing, so it is possible to form the crescent body casing with a sturdy metal material. It is also advantageous in terms of strength. Moreover, since the operation handle that functions as an antenna is attached to the crescent body in an electrically insulated state, even if the crescent body is fixed to the window frame with a screw, the operation handle that serves as the antenna There is no electrical continuity with the window frame such as aluminum sash, and the impedance of the antenna is maintained at a low value, so it is possible to operate the transmission circuit properly with a small amount of power consumption, and the output state of radio waves. Stabilize.

Since the alarm device forming a part of the crime prevention system is configured as a unit different from the crime prevention crescent, the alarm device can be placed at any position inside and outside the house as long as the radio wave from the transmission circuit can be reached. It can be installed freely.

[Brief description of drawings]

FIG. 1 is a perspective view showing the appearance of a crime prevention crescent to which the present invention is applied.

FIG. 2 (a) is a side view showing the internal structure of a crime prevention crescent casing, and FIG. 2 (b) is a sectional view thereof.

FIG. 3 (a) is a side view showing an internal structure in a state where mechanical components are attached to a crime prevention crescent casing, and FIG. 3 (b) is a sectional view thereof.

4 (a) is a plan view showing an outline of a circuit board mounted in a crime prevention crescent casing, FIG.
(B) is the side view.

5 (a) is a side view showing an internal structure in a state where mechanical components and a circuit board are attached to a crime prevention crescent casing, and FIG. 5 (b) is a sectional view thereof.

FIG. 6 is a block diagram schematically showing an electrical connection relationship of parts on a circuit board.

FIG. 7 is a perspective view showing an external appearance of an alarm device used with the crime prevention crescent.

FIG. 8 is a functional block diagram schematically showing the internal structure of the alarm device.

[Explanation of symbols]

1 Crescent with crime prevention function 2 Crescent body 3 locking pieces 3a folded back 4 window frames 5 window frames 6 Engagement member 6a Tapered surface 7 Operation handle 8 shafts 9 casing 10 through holes 11 step sleeve 12 rotating cams 12a protrusion 13 slots 14 Rotational position control pin 15 pin 16 Spring locking pin 17 coil spring 18 circuit board 19 Transmitter circuit 20 button battery (power supply) 21 Open / close operation detection switch 21a lead 22 Unauthorized operation detection switch 22a lead 23 Board receiving part 24 opening 25 terminals 26 through holes 27 screws 28 Alarm device 29 Receiver circuit 30 timer circuit 31 volumes 32 alarm speaker 33 Timer setting switch 34 Volume setting switch 35 code 36 ON / OFF switch 37 pilot lamp

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-88877 (JP, A) JP-A-1-17978 (JP, A) JP-A-2000-54693 (JP, A) JP-A-10-292702 (JP, A) JP-A-9-189156 (JP, A) Actually developed 60-179764 (JP, U) Actually developed 54-32593 (JP, U) Registered utility model 3061836 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05B 45/12 E05B 65/08

Claims (2)

(57) [Claims] 1. A and a one of the window frame to be deployed to deployed crescent body and the other of the window frame the locking piece, to the crescent body, an engaging member engaged with the locking piece this an operating handle for engaging and disengaging the engaging member relative to the locking piece is equipped, on the inside of the crescent main body, and the outgoing <br/> signal circuit for transmitting a radio wave, driving the oscillator circuit to power, and, opening and closing operation detected operating the only moment when detection is made the oscillating circuit with mechanically detects the rotational position of the operating handle immediately before the engagement member is disengaged from the locking piece A switch is integrally provided, and the engagement member is formed integrally with the operation handle by a tapered arc-shaped ridge protruding from the operation handle made of a conductive material, and the operation handle is the crescent. For the body Electrically with mounted rotatably on the crescent body in insulated state, crescent with security features that the operating handle is characterized in that it is connected as an antenna to the transmission circuit. 2. A security system featuring the constituted by the alarm device that operates to receive a crescent with security functions described, the radio wave from the transmitting circuit in claim 1.