CN113506415A

CN113506415A - Anti-theft alarm

Info

Publication number: CN113506415A
Application number: CN202110565751.8A
Authority: CN
Inventors: 樊永胜; 宁同洋
Original assignee: Individual
Current assignee: Shenzhen Chollima Security Software Engineering Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-10-15
Anticipated expiration: 2041-05-24
Also published as: CN113506415B

Abstract

The invention relates to the field of alarms, in particular to an anti-theft alarm which comprises a main machine, wherein one side of the main machine is provided with an auxiliary machine, the upper end and the lower end of the main machine are respectively connected with a first connecting pipe and a third connecting pipe, a second connecting pipe is connected between the first connecting pipe and the third connecting pipe, the surfaces of the first connecting pipe, the second connecting pipe and the third connecting pipe are provided with mounting mechanisms, and the surface of the first connecting pipe is provided with a camera. One side that the second connecting pipe is close to the host computer is provided with cleaning device, cleaning device includes the water pipe groove in the first connecting pipe, first connecting pipe internal fixation has the anti-cutting cover, the anti-cutting cover is made by preventing the sword and cuts the material, the anti-cutting cover passes through dead lever and slider and cleaning device fixed connection, the one end that second connecting pipe and third connecting pipe are close to the host computer is fixed with trigger device, trigger device can be when glass is broken pull the anti-cutting cover to host computer one side through the stay cord, prevents that lawless persons from getting into indoorly.

Description

Anti-theft alarm

Technical Field

The invention relates to the field of alarms, in particular to an anti-theft alarm.

Background

An anti-theft alarm is an electronic product which reminds or warns people of taking certain action in the forms of sound, light, air pressure and the like in order to prevent or prevent the consequences caused by certain events;

an invention patent with the patent number of CN210442903U discloses a switch burglar alarm of an intelligent door and window, relates to the technical field of alarms, and particularly relates to a switch burglar alarm of an intelligent door and window. The switch anti-theft alarm for the intelligent door and window is used by matching the lock catch and the buckle rod, when a person opens the door, the infrared receiver and the infrared transmitter are disconnected and cannot receive signals of the infrared transmitter, the change is transmitted to the microprocessor through the amplifying circuit, and after being processed by the microprocessor, the change is transmitted to the booming horn, the alarm indicator lamp and the driving motor, so that the booming horn sounds, and the alarm indicator lamp emits red light and flickers;

the burglar alarms described above have some drawbacks:

1. only with the alarm function, the house owner can not be helped to remember the appearance of the lawless person so as to provide clues for solving the case;

2. the window glass can not be directly entered into a room after being damaged by lawless persons, and no protective measures are taken;

3. daily accumulated dust of the window body needs to be additionally treated, and the device does not comprise a cleaning device;

to this end, we propose an anti-theft alarm.

Disclosure of Invention

The invention mainly aims to provide an anti-theft alarm which can effectively solve the problems that the anti-theft alarm in the background technology cannot record the appearance of a lawbreaker, cannot deal with the problem that the lawbreaker smashes a window to enter a room and does not comprise a cleaning device.

In order to achieve the purpose, the invention adopts the technical scheme that:

an anti-theft alarm comprises a host, wherein an auxiliary machine is arranged on one side of the host, a mounting plate is connected to the surface of the auxiliary machine, mounting holes are formed in the surface of the mounting plate, a first connecting pipe and a third connecting pipe are respectively connected to the upper end and the lower end of the host, a second connecting pipe is connected between the first connecting pipe and the third connecting pipe, mounting mechanisms are arranged on the surfaces of the first connecting pipe, the second connecting pipe and the third connecting pipe, a camera is mounted on the surface of the first connecting pipe, the camera is horizontally arranged at forty-five degrees downwards, a water pipe groove and a sliding groove are formed in the first connecting pipe, an anti-theft device is arranged in the second connecting pipe and comprises an anti-cutting cover and a trigger mechanism, cleaning devices are fixed on the outer side of the anti-theft device, the number of the trigger mechanisms is two, and the two trigger mechanisms are fixedly connected to one ends, close to the host, of the first connecting pipe and the third connecting pipe, one end of the host is provided with a switch.

Preferably, a groove is formed in the outer side of the switch on the surface of one end of the main machine, and the groove is matched with the size of the switch.

Preferably, anti-theft device includes fixed block, axis of rotation, anti-cutting cover, dead lever, stay cord and trigger mechanism, the fixed block has two, fixed block fixed connection is at the both ends of second connecting pipe, the axis of rotation is rotated and is connected on the fixed block, fixedly connected with anti-cutting cover in the axis of rotation, anti-cutting cover is rolled up in the axis of rotation, one side of anti-cutting cover is fixed on the dead lever, the first wind spring of dead lever both ends fixedly connected with, fixedly connected with handle on the dead lever, dead lever both ends fixed connection is on the slider, first wind spring fixedly connected with stay cord, the other end of stay cord is fixed on trigger mechanism.

Preferably, the trigger mechanism comprises a shell, a second coil spring, a limiting rod, a first supporting rod, a second supporting rod and a trigger spring, the second supporting rod is fixed in the shell, the second coil spring is fixed on the second supporting rod, one end of the second coil spring is fixedly connected with a pull rope, the trigger spring is parallel to the second supporting rod, one end of the trigger spring is fixed on one side of the shell, the other end of the trigger spring is fixedly connected with the limiting rod, the first supporting rod is fixed on one side of the shell, the limiting rod is U-shaped, the bottom edge of the U-shaped limiting rod is rotatably connected with the first supporting rod, one side of the U-shaped limiting rod is in contact connection with the glass surface, and the other side of the U-shaped limiting rod is in contact connection with the second coil spring.

Preferably, the cutting-resistant cover is made of a knife-resistant material.

Preferably, cleaning device includes the brush, the scraper blade, water pipe groove and delivery port, the brush is located the right side of dead lever, the scraper blade is located the right side of brush, the brush rotates to be connected on the slider, scraper blade fixed connection is on the slider, the water pipe groove is provided with the aperture of a plurality of slope.

Preferably, the two ends of the brush and the rotating shaft are connected through a rubber tube flexible shaft.

Preferably, two sets of mounting holes are formed in the surface of the mounting plate, the mounting plate is fixed to the surface of the wall through the mounting holes, and the auxiliary engine and the mounting plate are fixedly connected.

Preferably, installation mechanism includes the guide arm, the both ends of guide arm all with first connecting pipe, second connecting pipe, third connecting pipe fixed connection, the connecting block has been cup jointed in the outside activity of guide arm, one side fixed mounting of connecting block has the telescopic link, the one end fixed mounting of telescopic link has the pull ring, the spring has been cup jointed in the outside activity of telescopic link, the both ends difference fixed mounting of spring is on one side of pull ring and one side of connecting block, the inner chamber activity of pull ring has cup jointed the link, one side of link utilizes mounting groove and bolt fixed mounting on the window frame.

Preferably, the connecting frame is integrally J-shaped, and the spring is in a stretching state when the pull ring is movably sleeved on the upper part of the connecting frame.

Compared with the prior art, the invention has the following beneficial effects:

a fixing block and a rotating shaft are arranged in the second connecting pipe, a cutting-proof cover is arranged on the rotating shaft, the other end of the cutting-proof cover is fixed on a fixing rod, first coil springs are arranged at two ends of the fixing rod and fixedly connected with a pull rope, the other end of the pull rope is fixed on a trigger device, when a lawless person wants to damage glass and enter a room, the trigger device is triggered immediately after the glass is broken, the cutting-proof cover is pulled away to block the window by the coil springs in the trigger device at the first time, and the cutting-proof cover is made of a cutting-proof material, so that the lawless person cannot enter the room; when a lawbreaker wants to pry the window to enter the room, the window is opened, the auxiliary machine of the alarm main machine is in a non-aligned state, and the main machine gives an alarm sound to prompt a householder and scares away the lawbreaker; meanwhile, the camera can record the statue and appearance of lawless persons and provide clues for the official case solving; simultaneously, anti-cutting cover one side is provided with brush and scraper blade, it places with the delivery pipe to be provided with the water pipe groove in the first connecting pipe, when the window deposition becomes dirty needs clear, the water pipe is intake, rivers spout the window surface through the delivery port of slope, the pulling handle makes a round trip to clean the window surface, the expansion of anti-cutting cover is packed up and is driven the rotation of axis of rotation, the both ends and the brush both ends of axis of rotation are passed through the rubber tube flexible axle and are connected, so the rotation of axis of rotation can drive the brush and rotate, the brush rotates and to clean the window surface, the residual water stain is scraped to the scraper blade.

Drawings

FIG. 1 is a schematic view of an anti-theft alarm according to the present invention;

FIG. 2 is a schematic diagram of an internal structure of an burglar alarm according to the present invention;

FIG. 3 is a schematic diagram of the internal structure of an anti-theft alarm according to the second embodiment of the present invention;

FIG. 4 is a schematic front view of the internal structure of the trigger mechanism of the present invention;

FIG. 5 is a schematic top view of the internal structure of the trigger mechanism of the present invention;

FIG. 6 is a left side view of the internal structure of the trigger mechanism of the present invention;

FIG. 7 is an overall schematic view of the burglar alarm main unit and the sub-unit according to the present invention;

FIG. 8 is a schematic view of the overall construction of the mounting mechanism of the present invention;

FIG. 9 is an exploded view of the overall structure of the mounting mechanism of the present invention.

In the figure: 1. a host; 2. a secondary machine; 3. mounting a plate; 4. mounting holes; 5. a first connecting pipe; 51. a water pipe groove; 52. a chute; 53. a water outlet; 6. a second connecting pipe; 7. a third connecting pipe; 8. an installation mechanism; 81. a guide bar; 82. connecting blocks; 83. a telescopic rod; 84. a spring; 85. a pull ring; 86. a connecting frame; 87. mounting grooves; 9. an anti-theft device; 90. A fixed block; 91. a rotating shaft; 911. a flexible shaft of a rubber tube; 92. a cut-preventing cover; 93. fixing the rod; 931. a first coil spring; 932. A handle; 94. pulling a rope; 95. a trigger mechanism; 951. a housing; 952. a second coil spring; 953. a first support bar; 954. a limiting rod; 955. a trigger spring; 956. a second support bar; 11. a slider; 12. a cleaning device; 121. a brush; 122. a squeegee; 13. a groove; 14. a switch; 15. a camera is provided.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-9, an anti-theft alarm comprises a main machine 1, a sub-machine 2 is arranged on one side of the main machine 1, a mounting plate 3 is connected on the surface of the sub-machine 2, a mounting hole 4 is formed on the surface of the mounting plate 3, a first connecting pipe 5 and a third connecting pipe 7 are respectively connected on the upper end and the lower end of the main machine 1, a second connecting pipe 6 is connected between the first connecting pipe 5 and the third connecting pipe 7, a mounting mechanism 8 is arranged on the surfaces of the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7, a camera 15 is arranged on the surface of the first connecting pipe 5, the camera 15 is horizontally arranged at forty-five degrees downwards, a water pipe groove 51 and a sliding groove 52 are arranged in the first connecting pipe 5, an anti-theft device 9 is arranged in the second connecting pipe 6, the anti-theft device 9 comprises an anti-cutting cover 92 and a trigger mechanism 95, a cleaning device 12 is fixed on the outer side of the anti-theft device 9, two trigger mechanisms 95 are fixedly connected at one end of the first connecting pipe 5 and one end of the third connecting pipe 7 close to the main machine 1, one end of the main body 1 is provided with a switch 14.

In this embodiment, a groove 13 is formed on the outer side of a switch 14 on one end surface of the main body 1, and the size of the groove 13 is matched with that of the switch 14.

Specifically, the switch 14 is lifted to the highest position in the groove 13, the switch 14 can be opened, after the window is opened, the main unit 1 and the auxiliary unit 2 are in a non-aligned state, the main unit 1 gives an alarm sound, can give a prompt to a householder, and scares away lawbreakers, and meanwhile, the camera 11 can record the statue and appearance of the lawbreakers and remember the statue and the shape, and a clue can be provided for crime.

In this embodiment, the anti-theft device 9 includes two fixing blocks 90, a rotation shaft 91, a cutting-proof cover 92, a fixing rod 93, a pull rope 94 and a trigger mechanism 95, the two fixing blocks 90 are fixed at two ends of the second connecting pipe 6, the rotation shaft 91 is rotatably connected to the fixing blocks 90, the cutting-proof cover 92 is fixedly connected to the rotation shaft 91, the cutting-proof cover 92 is wound on the rotation shaft 91, one side of the cutting-proof cover 92 is fixed to the fixing rod 93, first coil springs 931 are fixedly connected to two ends of the fixing rod 93, handles 932 are fixedly connected to the fixing rod 93, two ends of the fixing rod 93 are fixedly connected to the sliding block 11, pull ropes 94 are fixedly connected to the first coil springs 931, and the other ends of the pull ropes 94 are fixed to the trigger mechanism 95.

The trigger mechanism 95 comprises a housing 951, a second coil spring 952, a limiting rod 954, a first supporting rod 953, a second supporting rod 956 and a trigger spring 955, the second supporting rod 956 is fixed in the housing, the second coil spring 952 is fixed on the second supporting rod 956, one end of the second coil spring 952 is fixedly connected with a pull rope 94, the trigger spring 955 is parallel to the second supporting rod 956, one end of the trigger spring 955 is fixed on one side of the housing, the other end of the trigger spring 955 is fixedly connected with the limiting rod 954, the first supporting rod 953 is fixed on one side of the housing, the limiting rod 954 is U-shaped, the bottom edge of the U-shaped limiting rod 954 is rotatably connected with the first supporting rod 953, one side of the U-shaped limiting rod 954 is in contact connection with a glass surface, and the other side of the U-shaped limiting rod 954 is in contact connection with the second coil spring 952.

The cut resistant cover 92 is made of a knife resistant material.

Specifically, when a lawbreaker wants to enter the room through breaking the window, the window is broken, the trigger mechanism 95 reacts immediately, one side of the limiting rod 954 contacting with the glass surface loses the support of the glass surface, the glass surface moves immediately under the action of the trigger spring 955, the trigger spring 955 retracts, one side of the limiting rod 954 contacting with the second coil spring 952 is pulled out, the second coil spring 952 contracts to drive the pull rope 94 to be rolled up, the pull rope 94 pulls the fixing rod 93 on the anti-cutting cover 92 to slide to one side of the host 1 quickly, the window is sealed, the anti-cutting cover 92 is made of an anti-cutting material, and the lawbreaker cannot enter the room.

In this embodiment, the cleaning device 12 includes a brush 121, a scraper 122, a water pipe slot 51 and a water outlet 53, the brush 121 is located on the right side of the fixing rod 93, the scraper 122 is located on the right side of the brush 121, the brush 121 is rotatably connected to the sliding block 11, the scraper 122 is fixedly connected to the sliding block 11, and the water pipe slot 51 is provided with a plurality of inclined small holes 53.

The two ends of the brush 121 and the rotating shaft 91 are connected through a rubber tube flexible shaft 911.

Specifically, when the window deposition becomes dirty, supply water with water pipe water supply pipe groove 51, rivers spout delivery port 53 on the water pipe groove 51, delivery port 53 sets the angle of slope, can make rivers spout the window and go up along, pulling handle 932 afterwards, make the whole removal about cleaning device 12, cleaning device 12 and cutting prevention cover 92's dead lever 93 fixed connection, it packs up to drive cutting prevention cover 92 expansion, cutting prevention cover 92's expansion is packed up and is made axis of rotation 91 rotate thereupon, the both ends of axis of rotation 91 and brush 121's both ends are passed through rubber tube flexible axle 911 and are connected, so axis of rotation 91's rotation can drive brush 121 and rotate together, brush 121 rotates and clears up the glass face, scraper blade 122 clears up remaining water spot afterwards.

In this embodiment, two sets of mounting holes 4 on the surface of the mounting plate 3 are formed, the mounting plate 3 is fixed on the surface of the wall through the mounting holes 4, and the auxiliary machine 2 and the mounting plate 3 are fixedly connected.

Specifically, after the main unit 1 is fixed, the back surface of the mounting plate 3 is abutted to the wall surface at one side of the main unit 1, the mounting plate 3 can be fixed to the wall surface through the mounting hole 4, and the auxiliary unit 2 can be fixed to one side of the main unit 1 at the wall surface due to the fixed connection between the auxiliary unit 2 and the mounting plate 3.

In this embodiment, the installation mechanism 8 includes a guide rod 81, both ends of the guide rod 81 are fixedly connected to the first connection pipe 5, the second connection pipe 6, and the third connection pipe 7, the connection block 82 is movably sleeved on the outer side of the guide rod 81, the telescopic rod 83 is fixedly installed on one side of the connection block 82, the pull ring 85 is fixedly installed on one end of the telescopic rod 83, the spring 84 is movably sleeved on the outer side of the telescopic rod 83, both ends of the spring 84 are respectively fixedly installed on one side of the pull ring 85 and one side of the connection block 82, the connection frame 86 is movably sleeved in the inner cavity of the pull ring 85, and one side of the connection frame 86 is fixedly installed on the window frame by using the installation groove 87 and the bolt.

In this embodiment, the connecting frame 86 is generally J-shaped, and the spring 84 is in a stretched state when the pull ring 85 is movably sleeved on the upper portion of the connecting frame 86.

Specifically, through first connecting pipe 5, second connecting pipe 6, all utilize the pull ring 85 on the third connecting pipe 7, spring 84, telescopic link 83 and connecting block 82 are connected with link 86 on the window frame, because link 86 is whole to be J word shape, spring 84 is in tensile state when link 86 upper portion is cup jointed in the pull ring 85 activity, be convenient for first connecting pipe 5, second connecting pipe 6, dismantle and be connected between third connecting pipe 7 and the window frame, the first connecting pipe 5 of installation has been improved, second connecting pipe 6, the convenience of third connecting pipe 7.

The working principle is as follows: it should be noted that, the present invention is an burglar alarm, a user fixedly connects the first connecting pipe 5, the third connecting pipe 7 and the second connecting pipe 6, welds the guide rod 81 on the surfaces of the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7, fixes the connecting frame 86 on the window frame through the mounting groove 87, pulls the pull ring 85 to extend the spring 84 and the telescopic rod 83, and sleeves the pull ring 85 on the outer side of the connecting frame 86, because the connecting frame 86 is overall in a J-shape, the pull ring 85 is movably sleeved on the upper portion of the connecting frame 86, the spring 84 is in a stretching state, the pull ring 85 and the connecting frame 86 can be fixed, and further the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7 are connected with the window frame, thereby completing the installation of the main machine 1, the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7, and then, the back of the installation plate 3 is abutted against the wall surface at one side of the main machine 1, the mounting plate 3 is fixed on the wall surface through the mounting hole 4, so that the auxiliary machine 2 is fixed on one side of the main machine 1 on the wall surface, finally, the switch 10 is lifted to the highest position in the groove 9, the switch 10 is opened, after the window is opened, the main machine 1 and the auxiliary machine 2 are in a non-aligned state, the main machine 1 gives an alarm sound to a householder, and the householder scares away lawless persons. The camera 11 can record the statue and appearance of the lawbreakers and remember the statue and appearance, so as to provide clues for solving the case.

When a lawbreaker intends to break the window and enter the room, and the alarm device is not triggered, the window is broken and triggers the trigger mechanism 95, the trigger mechanism 95 is internally fixed with a first supporting rod 953 and a second supporting rod 956, the first supporting rod 953 is fixed with a limiting rod 954, the second supporting rod 956 is fixed with a second coil spring 952, the limiting frame 954 is in a U-shaped structure, wherein the bottom edge of the U-shaped structure is fixed on the first supporting rod 953, the other two sides of the U-shaped structure are in contact connection with the glass surface, the other side of the U-shaped structure is clamped with the second coil spring 952 to form a lever structure, in addition, a trigger spring 955 is rotatably connected with one side of the limiting rod 954 close to the second coil spring 952, when the glass is broken, one side of the limiting rod 954 loses support and is pulled by the trigger spring, so that the side of the limiting rod 954, which is in contact with the second coil spring 952, is pulled rapidly from the second coil spring 952, the pull rope 94 is rolled on the second supporting rod 956, the fixed rod 93 on the anti-cutting cover 92 is driven by the pull rope 94 to rapidly slide to one side of the main machine 1, the window is completely sealed, and the anti-cutting cover 92 is made of a knife-cutting preventing material, so that a lawbreaker cannot enter a room.

When glass area deposition becomes dirty, water pipe water supply pipe groove 51 supplies water, rivers spout the delivery port 53 blowout on the water pipe groove 51, delivery port 53 sets the angle of slope, can make rivers spout the window upper limb, pulling handle 932 drives and moves about whole cleaning device 12, cleaning device 12 passes through slider 11 with the dead lever 93 of anti-cutting cover 92 and fixes together, anti-cutting cover 92's removal makes axis of rotation 91 rotate, the both ends of axis of rotation 91 and brush 121's both ends pass through rubber tube flexible axle 911 and are connected, consequently brush 121 can rotate along with axis of rotation 91's rotation, the rotation of brush 121 can clear up the spot on glass surface, scraper blade 122 can scrape off afterwards and remain the water spot.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An anti-theft alarm, comprising a main machine (1), characterized in that: one side of the main machine (1) is provided with an auxiliary machine (2), the surface of the auxiliary machine (2) is connected with a mounting plate (3), mounting holes (4) are formed in the surface of the mounting plate (3), the upper end and the lower end of the main machine (1) are respectively connected with a first connecting pipe (5) and a third connecting pipe (7), a second connecting pipe (6) is connected between the first connecting pipe (5) and the third connecting pipe (7), the surfaces of the first connecting pipe (5), the second connecting pipe (6) and the third connecting pipe (7) are provided with mounting mechanisms (8), the surface of the first connecting pipe (5) is provided with a camera (15), the camera (15) is horizontally arranged at forty-five degrees downwards, a water pipe groove (51) and a sliding groove (52) are arranged in the first connecting pipe (5), and an anti-theft device (9) is arranged in the second connecting pipe (6), anti-theft device (9) are including anti-cutting cover (92) and trigger mechanism (95), anti-theft device (9) outside is fixed with cleaning device (12), trigger mechanism (95) have two, and divide fixed connection in first connecting pipe (5) and third connecting pipe (7) one end that is close host computer (1), the one end of host computer (1) is provided with switch (14).

2. A burglar alarm according to claim 1, further comprising: a groove (13) is formed in the outer side of a switch (14) on the surface of one end of the main machine (1), and the groove (13) is matched with the switch (14) in size.

3. A burglar alarm according to claim 1, further comprising: the anti-theft device (9) comprises a fixing block (90), a rotating shaft (91), a cutting-proof cover (92), a fixing rod (93), a pull rope (94) and a trigger mechanism (95), wherein the fixing block (90) is provided with two fixing blocks (90) which are fixedly connected with two ends of a second connecting pipe (6), the rotating shaft (91) is rotatably connected onto the fixing block (90), the cutting-proof cover (92) is fixedly connected onto the rotating shaft (91), the cutting-proof cover (92) is coiled on the rotating shaft (91), one side of the cutting-proof cover (92) is fixed onto the fixing rod (93), two ends of the fixing rod (93) are fixedly connected with a first coil spring (931), a handle (932) is fixedly connected onto the fixing rod (93), two ends of the fixing rod (93) are fixedly connected onto a sliding block (11), the pull rope (94) is fixedly connected onto the first coil spring (931), the other end of the pull rope (94) is fixed on the trigger mechanism (95).

4. A burglar alarm according to claim 1, further comprising: the trigger mechanism (95) comprises a shell (951), a second coil spring (952), a limiting rod (954), a first supporting rod (953), a second supporting rod (956) and a trigger spring (955), the second supporting rod (956) is fixed in the shell, the second coil spring (952) is fixed on the second supporting rod (956), one end of the second coil spring (952) is fixedly connected with a pull rope (94), the trigger spring (955) is parallel to the second supporting rod (956), one end of the trigger spring (955) is fixed on one side of the shell, the other end of the trigger spring (955) is fixedly connected with the limiting rod (954), the first supporting rod (953) is fixed on one side of the shell, the limiting rod (954) is U-shaped, the bottom edge of the U-shaped limiting rod (954) is rotatably connected with the first supporting rod (953), one side of the U-shaped limiting rod (954) is in contact connection with the glass surface, the other side is connected in contact with a second coil spring (952).

5. A burglar alarm according to claim 1, further comprising: the cut resistant cover (92) is made of a knife resistant material.

6. A burglar alarm according to claim 1, further comprising: cleaning device (12) include brush (121), scraper blade (122), water pipe tank (51) and delivery port (53), brush (121) are located the right side of dead lever (93), scraper blade (122) are located the right side of brush (121), brush (121) rotate to be connected on slider (11), scraper blade (122) fixed connection is on slider (11), water pipe tank (51) are provided with aperture (53) of a plurality of slope.

7. A burglar alarm according to claim 6, further comprising: the two ends of the brush (121) and the two ends of the rotating shaft (91) are connected through a rubber tube flexible shaft (911).

8. A burglar alarm according to claim 1, further comprising: two sets of have been seted up in mounting panel (3) surperficial mounting hole (4), mounting panel (3) are fixed in the wall surface through mounting hole (4), be fixed connection between auxiliary engine (2), mounting panel (3).

9. A burglar alarm according to claim 1, further comprising: installation mechanism (8) include guide arm (81), the both ends of guide arm (81) all with first connecting pipe (5), second connecting pipe (6), third connecting pipe (7) fixed connection, connecting block (82) have been cup jointed in the outside activity of guide arm (81), one side fixed mounting of connecting block (82) has telescopic link (83), the one end fixed mounting of telescopic link (83) has pull ring (85), spring (84) have been cup jointed in the outside activity of telescopic link (83), the both ends difference fixed mounting of spring (84) is on one side of pull ring (85) and one side of connecting block (82), link (86) have been cup jointed in the inner chamber activity of pull ring (85), one side of link (86) utilizes mounting groove (87) and bolt fixed mounting on the window frame.

10. A burglar alarm according to claim 9, further comprising: the connecting frame (86) is integrally J-shaped, and the spring (84) is in a stretching state when the pull ring (85) is movably sleeved on the upper part of the connecting frame (86).