Door and window security alarm device

Abstract

The invention relates to the field of door and window protection production, in particular to a door and window security alarm device which comprises a mounting plate mounted on a door and window, an alarm body arranged on one side of the mounting plate and an alarm arranged on one side of the alarm body. The inclined plane design of the bottom of the passive plate enables the door and window to easily contact with the passive plate and generate extrusion force when the door and window rotates, so that the whole triggering mechanism is quickly started, the response speed of the device is improved, the device can quickly respond at the moment when the door and window are illegally opened, and the resistance of a lawless person to continuously push the door is increased; safety is further enhanced through cooperation of the concave block and the door pushing block, the limiting block enters the limiting groove after being subjected to the action of the triggering impact assembly, rapid locking is achieved through cooperation of the pressing block and the pressing groove, the door and the window are prevented from being further opened, and reliable protection is provided for indoor property and personnel.

Description

Technical Field

[0001] The invention relates to the field of door and window protection production, in particular to a door and window security alarm device. Background Art

[0002] With the continuous development of science and technology, intelligence has become an important trend in modern life, and door and window security alarm devices are becoming more and more intelligent. In order to prevent criminals from entering the room by prying doors and breaking windows and committing crimes such as theft and robbery, it is necessary to design a door and window security alarm device to promptly detect and prevent illegal intrusions, protect people's lives and property safety, and thus remind people to pay attention to safety.

[0003] Existing door and window security alarm devices usually use magnetic control sensors, infrared sensors, vibration sensors, etc. However, when traditional door and window security devices find that doors and windows are illegally opened, they can only sound an alarm and cannot take effective measures to prevent criminals from further entering the room. They cannot prevent doors and windows from being illegally opened, which increases safety hazards.

[0004] Therefore, it is necessary to propose a door and window security alarm device to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a door and window security alarm device, which solves the technical problem that traditional devices can only alarm when they find that doors and windows are illegally opened, but cannot effectively prevent criminals from entering, thereby increasing safety hazards.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The technical solution adopted by the present invention to solve the technical problem is: a door and window security alarm device, comprising a mounting plate installed on the door and window, an alarm body arranged on one side of the mounting plate, and an alarm arranged on one side of the alarm body; A magnetic control sensor is arranged on the alarm body and close to the door and window side; A slider, which is slidably connected to the lower side of the alarm body; The door push block is arranged on the side of the slider away from the alarm body and has a long structure, and is used to impact along the direction of the door and window rotation when the door and window rotate a certain angle; A fixing rod, which is laterally mounted on the inner side of the alarm body and is slidably connected to the slider; A compression spring is sleeved on the outside of the fixed rod and fixedly connected to the slider and the side wall of the alarm body; A concave block is arranged below the alarm body and is flush with the door and window when the door and window are closed. The magnetic control sensor is arranged below the concave block; The trigger impact assembly is arranged on the side wall of the alarm body and is used to start the door pushing block to push along the door or window when the door or window is rotated to a certain angle.

[0007] Preferably, the trigger impact assembly comprises: An expansion spring rod, which is slidably connected to the left side of the alarm body and is located on the side of the door and window rotation direction; A stop rod mounted on the top of the expansion spring rod; A telescopic assembly disposed at the bottom of the expansion spring rod; A passive plate is arranged at the bottom of the telescopic assembly, and the bottom of the passive plate is provided with inclined surfaces on both the front and rear sides, and the passive plate as a whole forms a thirty degree angle with the alarm body; A connecting block is mounted on the top of the blocking rod, and a penetration rod is mounted on the top of the alarm body and slides through the middle of the connecting block; A control block is mounted on the top of the slider and slides over the alarm body; A locking block, which is installed on the side of the connecting block away from the blocking rod; The lock opening is opened at the top of the control block and is arranged in an L-shaped structure. The lock block is clamped on the horizontal end of the lock opening.

[0008] Preferably, the telescopic assembly includes a screw rod installed below the expansion spring rod, a threaded sleeve is threadedly connected below the screw rod, a fixed plate with a circular structure is installed below the threaded sleeve, the passive plate is arranged in the middle below the fixed plate, an adjustment assembly for adjusting different angles of the passive plate is arranged in the fixed plate, a limit rod is installed on one side of the fixed plate, a fixed seat slidably connected to the limit rod is installed on the side wall of the screw rod, the alarm body is located below the expansion spring rod and is installed with an arc plate with a semi-arc shape, and a half-notch matched with the arc plate is opened on the top of the screw rod.

[0009] Preferably, the adjustment assembly includes a turntable installed under the fixed plate, the turntable is rotatably connected to the passive plate, the left side of the passive plate is slidably connected with a plug rod that can move up and down, the passive plate is provided with a telescopic groove below the plug rod, an expansion spring fixedly connected to the plug rod is installed in the telescopic groove, a semi-arc-shaped positioning hole is provided on the fixed plate, one end of the plug rod passes through one of the positioning holes, a locking groove is provided on the left side of the passive plate, and a pull rod passing through the inner side of the locking groove is installed on one side of the plug rod.

[0010] Preferably, the bottom of the slider is rotatably connected to the door pushing block via a rotating shaft, a coil spring cover is installed on the right side of the slider, a coil spring is installed on the inner side of the coil spring cover, one end of the coil spring is fixedly connected to the rotating shaft in the slider via a rotating shaft, bending rods are installed on both ends of the door pushing block, and a bending groove is opened on the side of the bottom of the alarm body corresponding to the rotation direction of the bending rod.

[0011] Preferably, one side of the screw rod is rotatably connected to a rotating block, and the lower part of the alarm body is rotatably connected to a driving block, and the driving block is in an L-shaped structure. When the door pushing block rotates on the slider, the end of the door pushing block away from the slider will drive the horizontal end of the driving block, and when the vertical end of the driving block is lifted upward, the screw rod is driven to be lifted upward synchronously through the rotating block. At this time, the top end of the door and window does not contact the passive plate when rotating.

[0012] Preferably, a limiting block is installed at one end of the concave block close to the pushing door block, and a pressing groove is provided at the left and right ends of the limiting block, and a limiting groove is provided on the side of the pushing door block corresponding to the limiting block, and the left and right ends of the limiting groove are slidably connected with spring rods, and pressing blocks are installed on the opposite sides of the two spring rods, and matching blocks are installed on the opposite sides of the two spring rods, and two rack plates are slidably connected to the side of the pushing door block facing away from the limiting block, and the two rack plates are respectively fixedly connected to the matching blocks located at the front and rear ends, and the pushing door block is located between the middle parts of the two rack plates and is rotatably connected with a driving gear, the driving gear is meshed with the two rack plates, and a rotating rod is installed at the end of the driving gear facing away from the pushing door block.

[0013] Preferably, the alarm body is provided with a slide groove below the concave block, the slide groove is slidably connected with the concave block by means of a slide rail, a spring telescopic rod fixedly connected to the concave block is installed in the slide groove, and a damper is provided on the spring telescopic rod. Beneficial Effects

[0014] (1) The present invention realizes triggering by setting a trigger impact assembly and utilizing the contact between the passive plate and the door and window. The inclined design at the bottom of the passive plate enables the door and window to easily contact the passive plate and generate a squeezing force when the door and window rotate, thereby quickly starting the entire trigger mechanism, improving the response speed of the device, and being able to respond quickly at the moment when the door and window are illegally opened, thereby increasing the resistance of the criminals to continue to push the door. The cooperation between the concave block and the door-pushing block further enhances safety. After being acted upon by the trigger impact assembly, the limit block enters the limit groove and is quickly locked by the cooperation between the pressing block and the pressing groove, preventing the door and window from being further opened, thereby providing reliable protection for indoor property and personnel.

[0015] (2) The present invention can be adjusted according to the height of different doors and windows by setting a telescopic component. By rotating the threaded sleeve on the screw rod, the fixed plate and the passive plate can be driven to move up and down to adapt to doors and windows of various heights and sizes, ensuring that the passive plate can contact the doors and windows at the optimal position, thereby improving the triggering accuracy and reliability of the device. The adjustment component can adjust the angle according to the shape of different doors and windows, the opening method and the contact situation with the passive plate, and find the optimal fitting angle of the passive plate, thereby greatly improving the adaptability of the device.

[0016] (3) The present invention provides auxiliary functions for the rotation and resetting of the door push block by arranging a coil spring cover, a coil spring, a bending rod and a bending groove, so that the operation of the door push block is smoother. The cooperation between the bending rod and the bending groove and the elastic force of the compression spring make the door push block less susceptible to accidental collision damage when not in operation. At the same time, when the door push block is folded, it can drive the drive block to lift the screw rod synchronously, avoiding accidental touching of the passive plate when the door and window are closed normally or when the security alarm function is not needed, thereby preventing the impact component from being triggered and malfunctioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 It is a bottom view of the overall structure of the present invention; Figure 4 It is a schematic diagram of the control block, the sliding block and the door-pushing block of the present invention; Figure 5 A schematic diagram of a trigger impact assembly of the present invention; Figure 6 is a cross-sectional view of a control block of the present invention; Figure 7 It is a cross-sectional view of the passive plate of the present invention; Figure 8 It is a schematic diagram of the slide block and the door push block of the present invention; Fig. 9 for Figure 2 A partial enlarged view of middle A; Fig.10 for Figure 3 A partial enlarged view of B.

[0019] Numbers in the figure: 1. Mounting plate; 10. Alarm body; 11. Alarm; 12. Magnetic control sensor; 21. Slider; 22. Door push block; 23. Fixed rod; 24. Compression spring; 25. Concave block; 20. Trigger impact assembly; 211. Expansion spring rod; 212. Stop rod; 213. Telescopic assembly; 2131. Screw rod; 2132. Threaded sleeve; 2133. Fixed plate; 2134. Limit rod; 2135. Fixed seat; 2136. Arc plate; 214. Passive plate; 2141. Turntable; 2142. Insert rod; 2 143, expansion spring; 2144, positioning socket; 2145, locking groove; 215, connecting block; 216, control block; 217, locking block; 218, locking mouth; 221, coil spring cover; 222, coil spring; 223, bending rod; 224, bending groove; 225, rotating block; 226, driving block; 231, limiting block; 232, limiting groove; 233, spring rod; 234, pressing block; 235, matching block; 236, rack plate; 237, driving gear; 241, slide groove; 242, spring telescopic rod. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 2 As shown, a door and window security alarm device includes a mounting plate 1 installed on the door and window, an alarm body 10 arranged on one side of the mounting plate 1 and an alarm 11 arranged on one side of the alarm body 10, and a magnetically controlled sensor 12, which is arranged on the alarm body 10 and close to the magnetically controlled sensor 12 on one side of the door and window.

[0022] First, fix the mounting plate 1 to the middle of the door and window with screws. When the door and window are in the closed state, the magnetic control sensor 12 interacts with the corresponding magnetic components on the door and window and is in a stable state. At this time, no alarm is triggered. Once the door and window are opened, the magnetic field around the magnetic control sensor 12 changes. The magnetic control sensor 12 can sensitively detect this magnetic field change, convert it into an electrical signal and then transmit it to the alarm 11 for alarm, so as to remind users or surrounding people to pay attention to the abnormal state of the door and window, thereby playing a warning and prevention role.

[0023] like Figure 2-Figure 3As shown, a slider 21 is slidably connected to the bottom of the alarm body 10, a door push block 22 is arranged on the side of the slider 21 away from the alarm body 10 and is in a long shape. It is used to impact along the direction of rotation of the door and window when the door and window are rotated to a certain angle, a fixed rod 23 is horizontally installed on the inner side of the alarm body 10 and is slidably connected to the slider 21, a compression spring 24 is sleeved on the outer side of the fixed rod 23 and is fixedly connected to the slider 21 and the side wall of the alarm body 10, a concave block 25 is arranged below the alarm body 10 and is flush with the door and window when the door and window are closed, a magnetic control sensor 12 is arranged below the concave block 25, and a trigger impact assembly 20 is arranged on the side wall of the alarm body 10, and is used to start the door push block 22 to push along the door and window when the door and window are rotated to a certain angle.

[0024] It should be noted that if the criminals continue to push the door, the impact component 20 is triggered to start working, releasing the spring potential energy of the compression spring 24. Since the compression spring 24 has been in a compressed state, it stores a certain amount of elastic potential energy. When released, the elastic potential energy is converted into kinetic energy, pushing the slider 21 to slide along the axial direction of the fixed rod 23. The sliding of the slider 21 drives the door-pushing block 22 to approach and push the doors and windows. Since the door-pushing block 22 has a long structure and is arranged on the side of the slider 21 away from the alarm body 10, it can impact the doors and windows that are about to be opened in the direction of their rotation. The impact of the door-pushing block 22 on the doors and windows further increases the resistance to the criminals continuing to push the door, and the sudden impact will make the criminals panic and increase their psychological pressure.

[0025] like Figure 3-Figure 5 As shown, the trigger impact assembly 20 includes an expansion spring rod 211, which is slidably connected to the left side of the alarm body 10 and is located on the side of the door and window rotation direction; a blocking rod 212, which is installed on the top of the expansion spring rod 211; a telescopic assembly 213, which is arranged at the bottom of the expansion spring rod 211; a passive plate 214, which is arranged at the bottom of the telescopic assembly 213, and the front and rear sides of the bottom of the passive plate 214 are provided with inclined surfaces, and the whole is at a thirty-degree angle with the alarm body 10; a connecting block 215, It is installed on the top of the baffle rod 212, and the top of the alarm body 10 is installed with an insertion rod 2142 that slides through the middle of the connecting block 215; the control block 216 is installed on the top of the slider 21, and it slides above the alarm body 10; the locking block 217 is installed on the side of the connecting block 215 away from the baffle rod 212; the locking port 218 is opened on the top of the control block 216 and is arranged in an L-shaped structure, and the locking block 217 is clamped on the horizontal end of the locking port 218.

[0026] It should be noted that, firstly, the rotation of the door and window will contact the passive plate 214. Since the bottom front and rear sides of the passive plate 214 are provided with inclined surfaces, the rotation of the door and window will generate an extrusion force on the passive plate 214, so that the passive plate 214 moves upward under the action of this extrusion force. The upward movement of the passive plate 214 drives the telescopic assembly 213 and the expansion spring rod 211 to move upward, and then drives the blocking rod 212 and the connecting block 215 to move upward. Since the locking block 217 is clamped on the horizontal end of the locking port 218 at the top of the control block 216, when the connecting block 215 When the lock block 217 is lifted upward and enters the vertical end of the lock hole 218, the elasticity of the compression spring 24 is released, driving the control block 216 and the slider 21 to be pushed toward the door and window synchronously. The present invention realizes triggering by setting a trigger impact assembly 20 and utilizing the contact between the passive plate 214 and the door and window. The inclined surface design at the bottom of the passive plate 214 enables the door and window to easily contact with the passive plate 214 and generate a squeezing force when the door and window rotate, thereby quickly starting the entire trigger mechanism. This design improves the response speed of the device and can quickly respond when the door and window are illegally opened. It is worth noting that the passive plate 214 of the present invention is arranged at a thirty-degree angle to the alarm body 10, which is beneficial for making the contact between the edge of the door and window and the inclined surface more closely when the door and window are rotated at the thirty-degree angle. At this angle, the force applied by the door and window can be converted into an upward lifting force of the passive plate 214 in the most effective way.

[0027] like Figure 4 As shown, the telescopic assembly 213 includes a screw rod 2131 installed below the expansion spring rod 211, a threaded sleeve 2132 is threadedly connected below the screw rod 2131, a fixed plate 2133 with a circular structure is installed below the threaded sleeve 2132, the passive plate 214 is arranged in the middle below the fixed plate 2133, and an adjustment assembly for adjusting different angles of the passive plate 214 is arranged in the fixed plate 2133, a limiting rod 2134 is installed on one side of the fixed plate 2133, a fixing seat 2135 slidably connected to the limiting rod 2134 is installed on the side wall of the screw rod 2131, and an arc plate 2136 with a semi-arc shape is installed on the alarm body 10 located below the expansion spring rod 211, and a half notch matched with the arc plate 2136 is opened on the top of the screw rod 2131.

[0028] It should be noted that when the height of the passive plate 214 needs to be adjusted, the threaded sleeve 2132 is rotated. Since the threaded sleeve 2132 is threadedly connected to the screw rod 2131, the threaded sleeve 2132 will move up and down on the screw rod 2131. As the threaded sleeve 2132 moves, the fixed plate 2133 will also move up and down, thereby driving the passive plate 214 disposed in the middle below the fixed plate 2133 to move up and down, thereby adjusting the height of the passive plate 214. The height of the passive plate 214 can be adjusted through the telescopic component 213, so that the device can adapt to doors and windows of different heights. Different types of doors and windows have different height sizes. By adjusting the height of the passive plate 214, it can be ensured that the passive plate 214 can contact the doors and windows at the optimal position, thereby improving the triggering accuracy and reliability of the device.

[0029] like Figure 5 and Figure 7 As shown, the adjustment assembly includes a turntable 2141 installed below the fixed plate 2133, the turntable 2141 is rotatably connected to the passive plate 214, the left side of the passive plate 214 is slidably connected with a plug rod 2142 that can move up and down, the passive plate 214 is located below the plug rod 2142 and is provided with a telescopic groove, and an expansion spring 2143 fixedly connected to the plug rod 2142 is installed in the telescopic groove, a semi-arc-shaped positioning hole 2144 is provided on the fixed plate 2133, one end of the plug rod 2142 passes through one of the positioning holes 2144, a locking groove 2145 is provided on the left side of the passive plate 214, and a pull rod passing through the inner side of the locking groove 2145 is installed on one side of the plug rod 2142.

[0030] It should be noted that, in the initial state, the plug rod 2142 is inserted into one of the positioning holes 2144 under the action of the expansion spring 2143, and the passive plate 214 is relatively fixed to the fixed plate 2133, and the passive plate 214 is kept at a specific angle. When the angle of the passive plate 214 needs to be adjusted to adapt to different door and window fits, the plug rod 2142 is pulled downward by the pull rod. At this time, the expansion spring 2143 enters a compressed state, and the plug rod 2142 gradually disengages from the current positioning hole 2144. By rotating the passive plate 214, the angle direction of the passive plate 214 can be changed. According to the shape of different doors and windows, the opening method and the contact with the passive plate 214, the passive plate 214 is rotated to different directions to find the best fit between the passive plate 214 and the doors and windows. The adjustment component enables the passive plate 214 to adjust the angle according to the specific conditions of different doors and windows, which greatly improves the adaptability of the device.

[0031] like Figure 4 , Figure 8-Figure 9 As shown, the lower part of the slider 21 is rotatably connected to the door push block 22 through a rotating shaft, a coil spring cover 221 is installed on the right side of the slider 21, a coil spring 222 is installed on the inner side of the coil spring cover 221, one end of the coil spring 222 is fixedly connected to the rotating shaft in the slider 21 through a rotating shaft, and bending rods 223 are installed on both ends of the door push block 22, and a bending groove 224 is opened on the side of the lower side of the alarm body 10 corresponding to the rotation direction of the bending rod 223.

[0032] It should be noted that when the device is not in use, the door push block 22 is rotated backward along the slider 21, and the curved rod 223 on the slider 21 is inserted into the curved groove 224. By releasing the elastic force of the compression spring 24 and the resistance of the curved rod 223 inserted into the curved groove 224, the door push block 22 can be folded in a parallel shape under the alarm body 10. This design can save space when the device is not in use, facilitate the storage and transportation of the device, and also prevent the door push block 22 from being damaged by accidental collision when not in operation; When the door push block 22 rotates, the coil spring 222 will be elastically deformed. When the device is not used, the door push block 22 is rotated backward, and the coil spring 222 is compressed to store energy. The coil spring 222 plays an auxiliary role in the process of rotating and resetting the door push block 22, providing a certain resilience for the door push block 22, so that the rotation of the door push block 22 is smoother. It is worth noting that a motor is installed on the coil spring cover 221, and the motor is connected to the rotating shaft inside the coil spring cover 221. When the motor is started, the output shaft of the motor drives the rotating shaft to rotate, which can control the door pushing block 22 to enter the folding state. At the same time, when no one is in the room, if the door pushing block 22 needs to be reset, remote operation can be achieved by starting the motor through an external controller, without the need for personnel to go to the site in person for manual reset, which greatly improves the convenience of operation.

[0033] like Figure 2 and Figure 5 As shown, one side of the screw rod 2131 is rotatably connected to a rotating block 225, and the lower part of the alarm body 10 is rotatably connected to a driving block 226. The driving block 226 is L-shaped. When the door push block 22 rotates on the slider 21, the end of the door push block 22 away from the slider 21 will drive the horizontal end of the driving block 226. When the vertical end of the driving block 226 is lifted upward, the screw rod 2131 is synchronously lifted upward through the rotating block 225. At this time, the top of the door and window does not contact the passive plate 214 when rotating.

[0034] It should be noted that when the door pushing block 22 enters the folding process, one end of the door pushing block 22 drives the horizontal end of the driving block 226 to rotate toward the inside of the alarm body 10. When the horizontal end is pushed to rotate toward the inside of the alarm body 10, its vertical end will be lifted upward, and then the screw rod 2131 will be lifted upward synchronously with the cooperation of the rotating block 225. As the screw rod 2131 is lifted upward, the entire telescopic assembly 213 will also move upward, so that the top of the door and window does not contact the passive plate 214 when rotating. When there is no need to trigger the impact assembly 20, such as closing the door and window normally or not needing the security alarm function, lifting the passive plate 214 in this way can avoid the door and window accidentally touching the passive plate 214 during the closing process, thereby preventing the impact assembly 20 from being triggered.

[0035] like Figure 2 , Figure 8 and Fig. 9 As shown, a limit block 231 is installed at one end of the concave block 25 close to the door push block 22, and a pressing groove is provided at the left and right ends of the limit block 231. A limit groove 232 is provided on one side of the door push block 22 corresponding to the limit block 231, and spring rods 233 are slidably connected to the left and right ends of the limit groove 232. A pressing block 234 is installed on the opposite side of the two spring rods 233. It should be noted that when the impact assembly 20 is triggered to drive the door push block 22 to push the door and window, as the door push block 22 moves, the limit block 231 on the concave block 25 gradually enters the limit groove 232 on one side of the door push block 22. During the process of the limit block 231 entering the limit groove 232, its side wall contacts the pressing block 234 in the limit groove 232. Due to the extrusion of the limit block 231, the pressing block 234 pushes the spring rod 233 to move inside the limit groove 232, and then the pressing blocks 234 on both sides continue to squeeze along the side wall of the limit block 231, and finally enter the pressing grooves on the left and right ends of the limit block 231. The pressing block 234 cooperates with the pressing groove to complete the rapid locking of the limit block 231, which greatly enhances the safety of doors and windows and provides better protection for indoor property and personnel. A matching block 235 is installed on the opposite sides of the two spring rods 233. The side of the door pushing block 22 facing away from the limit block 231 is slidably connected to two rack plates 236. The two rack plates 236 are respectively fixedly connected to the matching blocks 235 located at the front and rear ends. The door pushing block 22 is located between the middle parts of the two rack plates 236 and is rotatably connected to a driving gear 237. The driving gear 237 is meshed with the two rack plates 236. A rotating rod is installed on the end of the driving gear 237 facing away from the door pushing block 22.

[0036] When it is necessary to unlock the door push block 22, the gear 237 is driven counterclockwise by the rotating rod. The rotation of the driving gear 237 drives the two rack plates 236 to move synchronously. Then, the spring rods 233 on both sides are driven away from the door push block 22 through the action of the matching block 235, and the pressing block 234 is disengaged from the pressing groove inside the limit block 231. At this time, the limit block 231 loses the lock of the pressing block 234, and the limit block 231 is unlocked, which improves the convenience of use.

[0037] like Figure 3 and Fig.10 As shown, the alarm body 10 is provided with a slide groove 241 below the concave block 25. The slide groove 241 is slidably connected to the concave block 25 by means of a slide rail. A spring telescopic rod 242 fixedly connected to the concave block 25 is installed in the slide groove 241, and a damper is arranged on the spring telescopic rod 242.

[0038] When the impact assembly 20 is triggered to push the door push block 22 to impact the doors and windows, the doors and windows will generate a reaction force on the concave block 25. At this time, the concave block 25 moves into the slide groove 241, compressing the spring 24 telescopic rod, playing a buffering role and reducing the impact on the alarm body 10. By setting a damper, the movement of the spring telescopic rod 242 can be slowed down, making the movement of the concave block 25 more stable and controllable.

[0039] The working principle of the present invention is that the device is used for a door and window security alarm. When in use, the mounting plate 1 is fixed to the middle of the door and window by screws. Once the door and window are opened, the magnetic field around the magnetic control sensor 12 changes. The magnetic control sensor 12 detects this change and converts it into an electrical signal and transmits it to the alarm 11 to alarm, so as to remind the user or the surrounding personnel to pay attention to the abnormal state of the door and window. If the criminals continue to push the door, the door and window will contact the passive plate 214 when it rotates a certain angle. The inclined surfaces on the front and rear sides of the bottom of the passive plate 214 and the design of a thirty-degree angle with the alarm body 10 make it easy for the door and window to contact the passive plate 214 when rotating and generate a squeezing force. The passive plate 214 moves upward under the action of the squeezing force, driving the telescopic component 213 and the expansion spring 214 to move upward. The spring rod 211 moves upward, thereby driving the blocking rod 212 and the connecting block 215 to move upward. When the connecting block 215 is lifted upward so that the locking block 217 enters the vertical end of the lock hole 218, the elastic potential energy of the compression spring 24 is released, pushing the slider 21 to slide along the axial direction of the fixing rod 23. The sliding of the slider 21 drives the door-pushing block 22 to approach and push the door and window, and can impact the door and window that is about to be opened in the direction of rotation of the door and window. When the impact assembly 20 is triggered to push the door-pushing block 22, the limiting block 231 of the concave block 25 enters the limiting groove 232 of the door-pushing block 22, squeezing the pressing block 234, so that the spring rod 233 moves, and finally the pressing block 234 enters the pressing groove of the limiting block 231, completing the rapid locking and enhancing the safety of the door and window. When the height of the passive plate 214 needs to be adjusted, the threaded sleeve 2132 is rotated, and the threaded sleeve 2132 is lifted and lowered on the screw rod 2131, thereby driving the fixed plate 2133 to move up and down, so as to adjust the height of the passive plate 214. When the angle of the passive plate 214 needs to be adjusted to adapt to different door and window fits, the plug rod 2142 is pulled downward by the pull rod to compress the expansion spring 2143, and the plug rod 2142 is disengaged from the current positioning socket 2144. Then, the passive plate 214 is rotated to change the angle direction. According to the shapes of different doors and windows, the opening methods and the contact conditions with the passive plate 214, the optimal fit angle between the passive plate 214 and the doors and windows can be adjusted. When the device is not in use, the door push block 22 is rotated backward along the slider 21, and the bent rod 223 on the slider 21 is inserted into the bent groove 224 below the alarm body 10. By releasing the elastic force of the compression spring 24 and the resistance of the bent rod 223 inserted into the bent groove 224, the door push block 22 can be folded in parallel under the alarm body 10, saving space and avoiding accidental collision damage. When the door push block 22 is folded, one end of it drives the horizontal end of the drive block 226 to rotate toward the inside of the alarm body 10, so that the vertical end of the drive block 226 is lifted and the screw rod 2131 is driven to lift synchronously through the rotating block 225, so that the top end of the door and window does not contact the passive plate 214 when rotating, avoiding accidental touching of the passive plate 214 when the impact assembly 20 does not need to be triggered, thereby preventing malfunction.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A door and window security alarm device, comprising a mounting plate (1) mounted on the door and window, an alarm body (10) arranged on one side of the mounting plate (1), and an alarm (11) arranged on one side of the alarm body (10); characterized in that ； A magnetic control sensor (12), which is arranged on the alarm body (10) and is close to a door or window; A slider (21) slidably connected to the lower side of the alarm body (10); A door-pushing block (22), which is arranged on a side of the sliding block (21) away from the alarm body (10) and has a long structure, and is used to impact along the direction of rotation of the door or window when the door or window rotates a certain angle; A fixing rod (23) which is laterally mounted on the inner side of the alarm body (10) and is slidably connected to the slider (21); A compression spring (24) is sleeved on the outside of the fixing rod (23) and fixedly connected to the slider (21) and the side wall of the alarm body (10); A concave block (25) is arranged below the alarm body (10) and is flush with the door and window when the door and window are in a closed state, and the magnetic control sensor (12) is arranged below the concave block (25); The trigger impact assembly (20) is arranged on the side wall of the alarm body (10) and is used to activate the door push block (22) to push along the door or window when the door or window is rotated to a certain angle.

2. A door and window security alarm device according to claim 1, characterized in that; The trigger impact assembly (20) comprises: An expansion spring rod (211) which is slidably connected to the left side of the alarm body (10) and is located on the side of the door and window rotation direction; A blocking rod (212) mounted on the top of the expansion spring rod (211); A telescopic assembly (213) disposed at the bottom of the expansion spring rod (211); A passive plate (214) is arranged at the bottom of the telescopic assembly (213), and inclined surfaces are provided on the front and rear sides of the bottom of the passive plate (214), and the passive plate (214) forms a thirty-degree angle with the alarm body (10); A connecting block (215) is mounted on the top of the blocking rod (212); a penetration rod (2142) is mounted on the top of the alarm body (10) and slides through the middle of the connecting block (215); A control block (216) is mounted on the top of the slider (21) and slides above the alarm body (10); A locking block (217), which is mounted on a side of the connecting block (215) away from the blocking rod (212); The locking opening (218) is opened at the top of the control block (216) and is arranged in an L-shaped structure, and the locking block (217) is snap-connected to the horizontal end of the locking opening (218).

3. A door and window security alarm device according to claim 2, characterized in that; The telescopic assembly (213) comprises a screw rod (2131) installed below the expansion spring rod (211); a threaded sleeve (2132) is threadedly connected below the screw rod (2131); a fixed plate (2133) with a circular structure is installed below the threaded sleeve (2132); the passive plate (214) is arranged in the middle below the fixed plate (2133); an adjustment assembly for adjusting different angles of the passive plate (214) is arranged inside the fixed plate (2133); a limit rod (2134) is installed on one side of the fixed plate (2133); a fixed seat (2135) slidably connected to the limit rod (2134) is installed on the side wall of the screw rod (2131); a semi-arc-shaped arc plate (2136) is installed on the alarm body (10) below the expansion spring rod (211); and a semi-notch matching the arc plate (2136) is opened on the top of the screw rod (2131).

4. A door and window security alarm device according to claim 3, characterized in that; The adjustment assembly comprises a rotating disk (2141) installed below the fixed plate (2133); the rotating disk (2141) is rotatably connected to the passive plate (214); a plug rod (2142) that can move up and down is slidably connected to the left side of the passive plate (214); a telescopic groove is provided on the passive plate (214) below the plug rod (2142); an expansion spring (2143) fixedly connected to the plug rod (2142) is installed in the telescopic groove; a positioning hole (2144) in a semi-arc shape is provided on the fixed plate (2133); one end of the plug rod (2142) passes through one of the positioning holes (2144); and a locking groove (2145) is provided on the left side of the passive plate (214).

5. A door and window security alarm device according to claim 1, characterized in that; The lower part of the slider (21) is rotatably connected to the door push block (22) via a rotating shaft, a coil spring cover (221) is installed on the right side of the slider (21), a coil spring (222) is installed inside the coil spring cover (221), one end of the coil spring (222) is fixedly connected to the rotating shaft in the slider (21) via a rotating shaft, a bending rod (223) is installed at both left and right ends of the door push block (22), and a bending groove (224) is provided on the lower side of the alarm body (10) corresponding to the rotation direction of the bending rod (223).

6. A door and window security alarm device according to claim 3 or 5, characterized in that; One side of the screw rod (2131) is rotatably connected to a rotating block (225), and the lower side of the alarm body (10) is rotatably connected to a driving block (226). The driving block (226) is in an L-shaped structure. When the door push block (22) rotates on the slider (21), the end of the door push block (22) away from the slider (21) drives the horizontal end of the driving block (226). When the vertical end of the driving block (226) is lifted upward, the screw rod (2131) is driven to be lifted upward synchronously through the rotating block (225). At this time, the top end of the door and window does not contact the passive plate (214) when rotating.

7. A door and window security alarm device according to claim 1, characterized in that; A limiting block (231) is installed at one end of the concave block (25) close to the door push block (22), and pressing grooves are provided at the left and right ends of the limiting block (231). A limiting groove (232) is provided on one side of the door push block (22) corresponding to the limiting block (231), and spring rods (233) are slidably connected at the left and right ends of the limiting groove (232). Pressing blocks (234) are installed on opposite sides of the two spring rods (233). The two spring rods (233) are ) is installed with a matching block (235) on the opposite side of the door push block (22); the side of the door push block (22) facing away from the limit block (231) is slidably connected to two rack plates (236); the two rack plates (236) are respectively fixedly connected to the matching blocks (235) located at the front and rear ends; the door push block (22) is located between the middle parts of the two rack plates (236) and is rotatably connected to a driving gear (237); the driving gear (237) and the two rack plates (236) are meshed.

8. A door and window security alarm device according to claim 7, characterized in that; The alarm body (10) is provided with a slide groove (241) located below the concave block (25); the slide groove (241) is slidably connected to the concave block (25) by means of a slide rail; a spring telescopic rod (242) fixedly connected to the concave block (25) is installed in the slide groove (241); a damper is provided on the spring telescopic rod (242).

Images