JP3096441U - Crescent with security function and security equipment - Google Patents

Abstract

(57) [Problem] To provide a crescent with a security function and a security device with a reduced number of components of the security device and easy installation work during construction. SOLUTION: By disposing a transmission circuit 19 in the crescent main body 2, an independent wireless transmitter or the like is not required, the appearance of the window frames 4, 5 is improved, and the operation handle 7 is used as an antenna to prevent a security device. Suppress the cost increase when laying.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to an improvement in a crime prevention function crescent and a crime prevention device.

[0002]

[Prior art]

  To prevent the crime of entering the house by opening the window frame such as aluminum sash illegally As a crime-preventing crescent having a function and a crime prevention device, for example, Patent Document 1 A wireless door tightening confirmation system as shown in FIG.

[0003]   This wireless door tightening confirmation system is a crescent attached to one window frame. While attaching a magnet to the tip of the operation handle for opening and closing provided on the main body, A magnet-operated reed switch on the other window frame close to this operating handle. Attach a wireless transmitter with a built-in switch to lock / unlock the operating handle The movement of the magnet caused by the operation is detected by the reed switch and sent wirelessly. The alarm device was configured to be activated by operating the signal receiver.

[0004]

[Patent Document 1]   JP, 7-134790, A

[0005]

[Problems to be solved by the device]

  For this reason, it is independent of the crescent body and has a built-in reed switch. It is necessary to deploy the transmitter on the sash frame, which is a detrimental effect on the appearance of the window frame. was there.   Also, because it is necessary to separate the independent wireless transmitter from the crescent and deploy it separately, The number of elements that make up the security device has increased, and the cost of installing the security device has been reduced. There was a problem of getting high.

[0006]

[The purpose of the device]   Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide an independent window on the window frame. No need to install a wireless transmitter, it is inconspicuous, and the number of components of the security device is small Cresse with a crime prevention function that can be easily installed even during installation To provide a security device and a security device.

[0007]

[Means for Solving the Problems]

  The crime prevention crescent of the present invention is installed on one of the window frames in order to achieve the above purpose. It has a crescent body provided and a locking piece arranged on the other window frame,   The crescent body includes an engaging member that engages with the locking piece, and the engaging member. A conductive operation handle for engaging and disengaging with the locking piece, and an operation handle for operating the operation handle. With a transmission circuit that operates in response to the work,   The operating handle is connected to the transmitting circuit as an antenna. It has a characteristic structure.

[0008]   Since the transmission circuit is installed in the crescent body, it is independent of the crescent body on the window frame. It eliminates the need for a wireless transmitter and improves the aesthetics of the window frame.   It also reduces the number of independent elements needed to make up a security device, An increase in cost when installing the security device is suppressed.   Furthermore, since the operating handle is also used as an antenna, an independent coil antenna is used. The entire structure is simplified as compared with the case where the core and the like are built in the crescent body.   Also, unlike the configuration in which the coil antenna etc. is built in the crescent body, the antenna Since there is no concern that will be shielded by the crescent body casing, The crescent body casing can be made of a durable metal material, It is also advantageous in terms of mechanical strength.

[0009]   The crime prevention device of the present invention includes the above-described crime prevention crescent and this crime prevention crescent. It is composed of a combination with an alarm device that operates by receiving radio waves from Cent It

[0010]   Since the alarm device is configured as a unit separate from the crime prevention crescent, Any place inside or outside the house as long as the signal from the Crescent with crime prevention function is within reach It can be installed in.

[0011]

[Embodiment of device]

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Figure 1 The perspective view which showed the external appearance of the crime prevention function Crescent 1 of one embodiment to which the proposal was applied, 2 to 3 and 5 show the crime prevention in accordance with the assembly process of the Crescent 1 with a crime prevention function. It is the side view and sectional drawing which showed the internal structure of the functional crescent 1.

[0012]   As shown in FIG. 1, the crime prevention crescent 1 of the present embodiment has a general odor. And is constituted by the crescent body 2 and the locking piece 3.

[0013]   Of these, the crescent body 2 is fixed to one window frame 4 as shown in FIG. And an engaging member 6 that engages with the locking piece 3 fixed to the other window frame 5, An operation handle 7 for engaging and disengaging the engaging member 6 with respect to the locking piece 3 is provided.

[0014]   The operation handle 7 is made of a conductive material such as aluminum alloy and has a taper. As shown in FIG. 1, the engaging member 6 composed of a circular arc-shaped protrusion is used for this operation hand. It is formed integrally with the rule 7.

[0015]   As shown in FIGS. 2 (a) and 2 (b), on the back side of the operation handle 7, , The shaft 8 made of a conductive material is projected and fixed, and the main part of the crescent body 2 is In the through hole 10 formed in the thick portion of the central portion of the casing 9 forming the It is rotatably supported by a stepped sleeve 11 made of an insulating material such as grease.

[0016]   The casing 9 is made of a metal equivalent to the operation handle 7 in consideration of mechanical strength. A step formed of a material and serving as an insulating material between the casing 9 and the operating handle 7. It is surely insulated by the attached sleeve 11.

[0017]   Then, at the tip of the shaft 8, a disk-shaped member made of a conductive material is formed. The rotating cam 12 has a shaft as shown in FIGS. 3 (a) and 3 (b). It is integrally fixed to 8 in a non-rotatable state. In addition, the rotary cam 12 , An arc-shaped elongated hole 13 extending along the circumferential direction is bored, and the central portion of the casing 9 is Engagement between the rotational position regulating pin 14 that is planted in the thick portion and protrudes into the long hole 13 and the long hole 13. Depending on the matching relationship, the rotation cam 12 and the operation handle 7 may rotate with respect to the casing 9. The rolling limit is regulated.

[0018]   The operation handle 7 is oriented in the direction shown in FIG. 3 (a) from the completely closed position shown in FIG. 3 (a). 180 ° counterclockwise with respect to gender, or the fully closed position shown in Figure 1. It is possible to rotate clockwise in the range of 180 ° with reference to the directionality in FIG. It Since the rotation position regulating pin 14 is made of an insulating material such as synthetic resin, , The rotary cam 12 and the casing 9 are electrically connected to each other via the rotational position regulating pin 14. There is no such thing. Further, a step is provided between the back surface of the rotating cam 12 and the thick portion of the casing 9. Since the collar portion of the sleeve 11 is interposed, the back surface of the rotary cam 12 serves as the casing 9. There is no direct contact and no conduction.

[0019]   As shown in FIGS. 3 (a) and 3 (b), the surface of the rotary cam 12 is The pin 15 made of an insulating material such as synthetic resin is integrally fixed to the inside of the casing 9. Coil spring 17 whose one end is locked to a spring locking pin 16 implanted in the The other end of is locked.

[0020]   This coil spring 17 is a fulcrum crossing spring that urges the operating handle 7 to rotate. Functioning, the rotational position of the operating handle 7 with respect to the casing 9 is rotated toward the closed position. In the rolling position, that is, the rotation position of the operating handle 7 is completely closed in FIG. If the position is within the range of 0 ° to 90 ° in the counterclockwise direction, the operating handle The dollar 7 is urged clockwise toward the completely closed position in FIG. When the rotational position of the operation handle 7 with respect to the button 9 is near the open position, That is, the rotation position of the operation handle 7 is reversed with reference to the completely closed position of FIG. When it is in the range of 90 ° to 180 ° clockwise, open the operating handle 7 completely. It is biased counterclockwise in FIG. 3 (a) toward the release position.

[0021]   The operation handle 7 is unnecessary due to the spring function of the coil spring 17 over the fulcrum. Stopping at an arbitrary neutral position is prevented. In addition, what is the fully open position here? 3A, when the end portion 13a of the elongated hole 13 comes into contact with the rotation position regulating pin 14. Operation from the rotational position of the operating handle 7, that is, the state of FIG. 3 (a) or FIG. The rotation position of the operation handle 7 when the operation handle 7 is rotated by 180 °.

[0022]   4A and 4B are incorporated in the casing 9 of the crescent body 2. It is a figure showing the appearance of circuit board 18.

[0023]   As shown in FIGS. 4A and 4B, the circuit board 18 transmits radio waves. A transmitter circuit 19 for transmitting and a power source for driving the transmitter circuit 19. The button circuit 20 and the operation of the operating handle 7 are detected to generate the transmitting circuit 19. Opening / closing operation detection switch 21 for moving and the crescent body from one window frame 4 Unauthorized operation detection for activating the transmission circuit 19 by detecting that 2 is removed And a switch 22.

[0024]   The opening / closing operation detection switch 21 is turned on only when the lead 21a is pressed. It can be configured with normally open micro switches, etc. In addition, the tampering detection switch 22 is operated when the lead 22a is released from the pressed state. Consists of a normally closed microswitch that turns on only when It is possible to

[0025]   Further, the terminals 25 fixed to the back surface side of the circuit board 18 are provided on the front side of the circuit board 18. It is electrically connected to the signal output section of the deployed transmission circuit 19. Circuit board 18 Regarding the pattern of the printed wiring above, there is no direct relation to the gist of the present invention. Therefore, the description is omitted.

[0026]   FIG. 6 schematically shows the electrical connection relationship of the parts arranged on the circuit board 18. It is a block diagram. The open / close operation detection switch 21 and the unauthorized operation detection switch 22 are As shown in FIG. 6, a button battery 20 as a power source and a transmitter circuit 19 are connected in parallel. If at least one of the switches is turned on, the The operation handle 7 is operated or the crescent body 2 is removed from the window frame 4. In the case of the above, the transmitting circuit 19 is automatically operated. In other words, The path 19 is a transmission circuit that operates in response to the operation of the operation handle 7.

[0027]   Regarding the configuration of the transmitting circuit 19, it is used in a keyless entry system for automobiles. Since it is substantially the same as the generated oscillator, its description is omitted here. In addition, here The keyless entry system is a transmitter installed on the key of a car. Remote control of vehicle door lock from outside to lock / unlock state That is.

[0028]   The state where the circuit board 18 is mounted on the casing 9 of the crescent body 2 is shown in FIG. And shown in FIG. As shown in FIGS. 5A and 5B, the circuit The board 18 is provided on the back of the casing 9 with the tampering detection switch 22 facing outward. Surface side, and its four corners are fixed to the board receiving portion 23 of the casing 9 with screws. Is determined. The opening 24 provided in the central portion of the circuit board 18 is used for assembling the circuit board 18. The opening / closing operation detection switch 2 provided on the back surface side of the circuit board 18 for the mounting work. Relative position of the lead 21a or terminal 25 of No. 1 and the rotary cam 12 on the casing 9 side Accurately grasp the relationship and perform smooth assembly work while avoiding interference between the two. This is a peep window.

[0029]   As shown in FIG. 5A, the terminals 25 provided on the back surface side of the circuit board 18 are , Is in sliding contact with the outer periphery of the rotary cam 12 with elasticity, and operates with the signal output section of the transmission circuit 19. It is electrically connected to the handle 7. The operating handle 7 is made of aluminum as described above. It is made of a conductive material such as a nickel alloy. It electrically connects to the circuit 19 and functions as an antenna (see FIG. 6). In fact, in addition to the operating handle 7, the human body that holds the operating handle also operates as an antenna. This also works, so this point should also be taken into consideration when designing the oscillator circuit 19. Should.

[0030]   Further, a protrusion 12a as shown in FIG. 5 (a) is provided on the outer peripheral portion of the rotary cam 12. It has been burned. Then, the rotary cam 12 generated by the opening / closing operation of the operation handle 7 The projection 12a pushes the lead 21a of the opening / closing operation detection switch 21 in accordance with the rotational movement of the When pressed, the open / close operation detection switch 21 changes from the OFF state to the ON state, This state is maintained until the protrusion 12a passes the tip of the lead 21a. The signal circuit 19 is activated.

[0031]   The protrusion 12a presses the lead 21a of the opening / closing operation detection switch 21 as shown in FIG. From the fully closed position as shown in (a), move the operating handle 7 in the direction shown in FIG. 5 (a). About 90 ° counterclockwise with reference to the The stage in which it is rotated approximately 90 ° in the total direction, that is, the engagement member 6 of the operation handle 7 is locked. This is the timing immediately before leaving the piece 3.

[0032]   As shown in FIG. 1, the engaging member 6 is formed by a tapered arc-shaped ridge. Therefore, when the operation handle 7 is rotated to a position of about 90 °, the engaging portion A constant gap is provided between the taper surface 6a of the material 6 and the inside of the folded back bent portion 3a of the locking piece 3. Occurs and the two are insulated. Therefore, when the transmitter circuit 19 is activated, it functions as an antenna. The operation handle 7 that works is attached to the impeller of the locking piece 3 and the window frame 5 made of aluminum alloy. However, it is not added. Also, the casing 9 of the crescent body 2 is a stepped sleeve. Since it is completely insulated from the operating handle 7 by the leaves 11, The impedance of the alloy casing 9 and the window frame 4 makes the operating hand as an antenna. It is not added to rule 7.

[0033]   In addition, the operation handle 7 functioning as an antenna is attached to the crescent main body 2. Since it is installed in an electrically insulated state, the crescent body 2 Even when fixed to the window frame 4 with the screw 27, the operation handle 7 and the aluminum sash, etc. There is no electrical continuity with the window frame of the Since the impedance of the antenna is kept at a low value, it can be properly generated with a small amount of power consumption. The signal circuit 19 can be operated, and the impedance of the antenna is not changed. Since it does not occur, radio waves can always be transmitted in a stable state.

[0034]   It is the operation handle that can actually unlock and open the window frames 4 and 5. 7 is rotated 90 ° or more to completely release the fitting between the engaging member 6 and the locking piece 3. The operation timing of the opening / closing operation detection switch 21, that is, the transmission circuit The operation timing of 19 is slightly earlier than that. That is, the transmission circuit 19 It is not possible to open the window frames 4 and 5 without operating the.

[0035]   In this embodiment, the locking piece 3 is made of aluminum equivalent to the operation handle 7 and the casing 9. Since it is made of a nickel alloy, the impedance of the locking piece 3 and the window frame 5 is Since it is necessary to prevent it from being added to the operation handle 7 as a Although it is necessary to set the operation timing of the switch 21 strictly as described above, When 3 is made of an insulating material such as synthetic resin, the engaging member 6 and the locking piece 3 are Since there is no problem of impedance increase due to contact, the open / close operation detection switch 21 The operation timing of is the stage before the engagement between the engagement member 6 and the locking piece 3 is completely released. It may be any time on the floor.

[0036]   The crescent body 2 thus configured has the upper and lower ends thereof. A screw 27 is passed through the through hole 26 from the front side, and one of the window frames is inserted as shown in FIG. It is fixed to 4.

[0037]   It is provided on the circuit board 18 by fixing the crescent body 2 to the window frame 4. The lead 22a of the unauthorized operation detection switch 22 is pressed by the contact surface of the window frame 4. , The normally closed tampering detection switch 22 has a state as shown in FIG. It is opened (OFF). Therefore, the crescent body 2 is not normally fixed to the window frame 4. As long as the tampering detection switch 22 is activated, the transmission circuit 19 may react. Not.

[0038]   However, an intruder from outside removes the crescent body 2 from the window frame 4 and If you try to unlock the frames 4 and 5, the crescent body 2 will hit the window frame 4. By separating from the contact surface, the pressing force that acts on the lead 22a is lost, and illicit operation is detected. Since the switch 22 automatically returns to the normally closed state (ON), The transmitting circuit 19 operates in the same manner as when the operating handle 7 is opened and closed. Become.

[0039]   In this way, the crescent body 2 is fixed to the one window frame 4 with the screw 27. When it is made, the crescent main body 2 has a contact surface with the window frame 4 Illegal operation of the transmitter circuit 19 by detecting that the main body 2 has been removed from the window frame By deploying the operation detection switch 22, the opening / closing operation detection switch 21 is closed. Independent of the crescent body 2 even though it is integrated inside the cent body 2 The same as when the handle operation detection means (reed switch, etc.) is installed outside In addition, it becomes possible to detect unauthorized removal work of the crescent body 2. .

[0040]   As a method of illegally entering a house through a window frame, glass cutting etc. Cut out the surrounding glass and operate the crescent operation handle, or Remove the crescent itself from the window frame by holding the crescent operation handle. The following methods are generally used, but whichever method was used with the configuration described above. It is possible to properly deal with intrusion.

[0041]   Figure 7 shows the reception of radio waves from the transmission circuit 19 built into the Crescent 1 with crime prevention function. FIG. 8 is a perspective view showing the outer appearance of the alarm device 28 that operates, and FIG. It is the functional block diagram which simplified and showed the structure, and the security device of this embodiment is And the alarm device 28 are combined. .

[0042]   As shown in FIGS. 7 and 8, the alarm device 28 uses the radio wave from the transmission circuit 19. The receiving circuit 29 for receiving and the detection of the radio wave by the receiving circuit 29 as a stimulus The power supplied to the timer circuit 30 that operates for a set time and the alarm speaker 32 It has a potentiometer 31 for adjusting the force and sets the operating time of the timer circuit 30. The timer setting switch 33 and the volume setting switch 34 for Mounted on the outside of the casing of the alarm device 28 for free operation . Reference numeral 35 in FIG. 7 indicates that the alarm device 28 is connected to an indoor power source for home use. The code 36 for the ON / O for setting the activation / non-activation of the alarm device 28. The FF switch and the reference numeral 37 are pilot lamps.

[0043]   The operation of the transmission circuit 19 is prohibited for the crime prevention crescent 1 of this embodiment. There is no special power switch for the windows, so the window frame 4, 5 For locking / unlocking the Crescent 1 with the crime prevention function required to open and close the In this case, the open / close operation detection switch 21 reacts unconditionally, and the transmission circuit 19 Is activated and radio waves are transmitted, but the ON / OFF switch on the alarm device 28 side If you turn off the switch 36 or set the volume to a low level, It is possible to prohibit the silent alarm output from the mosquito 32. Of course, volume setting Use a volume switch instead of the switch 34 and ON / OFF switch 36. May be.

[0044]   Also, the volume of the alarm output itself can be freely set by operating the volume setting switch 34. The alarm device 28 operating time, that is, the alarm speaker 32 The duration of the alarm output from the above can be freely adjusted by the timer setting switch 33. And are possible.

[0045]   Therefore, even if the operating time of the transmitting circuit 19 is limited to a short time, the transmitting circuit 1 It is possible to freely set the operating time of the alarm device 28 regardless of the operating time of 9. become able to.

[0046]   The same Crescent 1 with crime prevention function with the same frequency of the transmitted radio waves If you install it on the window frame parts of various parts of the store, you only have to install a single alarm device 28. Accurately detects that the Crescent 1 with crime prevention function on any window frame has been opened or closed. can do.   In addition, the same Crescent 1 with crime prevention function with different frequencies of transmitted radio waves The alarm device 28 is installed in the window frame part of each house, and the alarm device 28 is multi-channeled. If an alarm lamp or the like corresponding to each frequency is provided in the table 28, which window frame It is also possible to specify whether or not the crime prevention crescent 1 has been operated.   In addition, it is necessary to prevent radio waves that emit radio waves of frequencies different from those used in nearby houses. By adopting Crescent 1 with a criminal function, it is possible to avoid duplication of radio waves between adjacent houses. Therefore, the malfunction of the alarm device 28 can be prevented.

[0047]   Well-known AM / FM modulation or PCM (pulse It is possible to use techniques such as chord modulation).

[0048]   As described above, according to this embodiment, the transmitter circuit 19 and the button serving as the power source Necessary for achieving the crime prevention function such as the battery 20 and the open / close operation detection switch 21. Since all the components to be installed are integrated inside the crescent body 2, the window frame There is no need to deploy a wireless transmitter independent of the Crescent body 2 on the window frame The aesthetics of are improved. Moreover, the Crescent HONDA 2 has a security function. It is virtually impossible for an intruder to find out, and an intruder can avoid this by opening another window. The problem of trying to break in through a frame or door is also eliminated.

[0049]   Moreover, the opening / closing operation detection switch 21 is incorporated in the crescent body 2 itself. Since it is independent of the crescent body 2, the handle operation detection lead is placed on the window frame. Different from the conventional technology such as deploying a switch, etc., There is no need for precise positioning work. Therefore, between the Crescent body and the wireless transmitter Relative mounting position relationship, that is, relative to magnet and reed switch The wireless transmitter will operate at the correct timing unless a precise positional relationship is specified. Installation of wireless transmitter and crescent body during installation The annoyance of having to perform the work precisely is eliminated, and it is easy to handle during construction. The attaching work becomes easy.

[0050]   In addition, the operation handle 7 and the casing 9 are not insulated, and the operation handle 7 and the casing are not insulated. It is also possible to use it together with the ring 9 as an antenna for transmission. This place If this is the case, insulate the casing 9 from the one window frame 4 with a rubber sheet, etc. An insulating sleeve made of synthetic resin or the like is interposed between the single 9 and the screw 27, and the oscillator circuit 1 Design the output of 9 according to the combined impedance of the operating handle 7 and casing 9. It shall be.

[0051]   In addition, as the opening / closing operation detection switch 21 and the unauthorized operation detection switch 22, In addition to the black switch, a well-known detection means such as a photo sensor or a proximity switch is used. However, from the viewpoint of power consumption, it is It is desirable to utilize electrically actuated contacts. In the above-described embodiment, the fulcrum is crossed The operation handle 7 is in the neutral position by the action of the coil spring 17 which functions as a spring. It is prohibited to stop at the position, and the open / close operation detection switch 21 is engaged from the locking piece 3. The rotational position of the operation handle 7 immediately before the member 6 is detached, that is, the operation handle 7 It operates momentarily when the tapered arc-shaped ridge is in non-contact with the locking piece 3. Therefore, when the transmission circuit 19 is operating, the other window frame 5 is installed on the operation handle 7. It does not act as a pedestal and operates the opening / closing operation detection switch 21. Since the time can be suppressed to an extremely short time, it is extremely convenient for saving electricity. Good match.

[0052]   Thus, in the opening / closing operation detection switch 21, the engaging member 6 is disengaged from the locking piece 3. Immediately before operating, the rotational position of the operating handle 7 is detected and the transmission circuit 19 is momentarily activated. The power consumption due to the operation of the transmission circuit 19 is small because it is configured to The battery power of the button battery 20 etc. built into the crescent body 2 can be kept for a long time. It can be used without replacement.

[0053]

[Effect of device]

  Since the Crescent with crime prevention function of the present invention is equipped with the transmission circuit in the Crescent body, Eliminates the need to deploy a wireless transmitter independent of the Crescent body on the window frame The aesthetics of the window frame are improved.   Also, since the number of independent elements that constitute the security device is reduced, the security device is installed. The increase in cost is suppressed.   Furthermore, since the operating handle made of a conductive material is also used as an antenna, Overall structure compared to the case where an independent coil antenna etc. is built into the crescent body Is simplified.   Moreover, unlike the configuration in which the coil antenna etc. are built in the crescent body, Since there is no concern that the na will be shielded by the crescent body casing , It is possible to form the casing of the crescent body with a durable metal material, It is also advantageous in terms of mechanical strength.

[0054]   In addition, the alarm device that forms part of the crime prevention device is a unit different from the Crescent with crime prevention function. Since it is configured as a security unit, it is within the range that radio waves from the crime prevention function Crescent can reach. If so, it can be freely installed at any position inside and outside the house.

[Brief description of drawings]

FIG. 1 is a perspective view showing an 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

Claims (2)

[Scope of utility model registration request] 1. A crescent body provided on one window frame and a locking piece provided on the other window frame, wherein the crescent body has an engagement member that engages with the locking piece. A conductive operation handle for engaging and disengaging the engagement member with respect to the locking piece; and a transmission circuit that operates in response to an operation of the operation handle, Crescent with a crime prevention feature, which is connected to the as an antenna. 2. A crime prevention device comprising the crime prevention function crescent according to claim 1 and an alarm device which operates by receiving radio waves from the crime prevention function crescent.