A sound and light alarm

Abstract

The invention relates to the field of alarms, and discloses an audible and visual alarm, comprising a shell body with the audible and visual alarm fixedly installed inside, a fixed driving mechanism fixedly connected to the bottom of the shell body, the fixed driving mechanism comprising a positioning tube, a flip extension mechanism rotatably connected to the positioning tube, a suction mechanism fixedly installed on the flip extension mechanism, the suction mechanism comprising a first extension tube, a second extension tube arranged in the first extension tube, the flip extension mechanism is used to drive the suction mechanism to unfold and merge uninterruptedly, and absorb gases at different positions and directions; a suction nozzle is fixedly connected to the bottom of the second extension tube, the suction nozzle will change shape as the first extension tube and the second extension tube are unfolded and merged, and the suction mode of the second extension tube is changed. In view of the difference in density between natural gas and liquefied petroleum gas, the alarm can absorb gases in the upper and lower layers of the space, effectively avoid detection blind spots caused by gas distribution characteristics, and greatly improve the accuracy of detection of different types of gas leaks.

Description

Technical Field

[0001] The present invention relates to the field of alarm technology, and more specifically, to an audible and visual alarm. Background Art

[0002] The sound and light alarm is a safety device that alerts people to potential dangers by emitting sound and light signals in emergency situations. There are many types of it, and the gas sound and light alarm is one of them. The gas sound and light alarm mainly uses sensors to detect the concentration of combustible gases in the environment. The sensitivity of the gas sound and light alarm depends on whether the gas can pass through effectively.

[0003] During the renovation of the old city, there will be some transitional periods where two types of gas will be used at the same time. For example, when an area is switching from liquefied petroleum gas supply to natural gas pipeline supply, some households will temporarily retain liquefied petroleum gas equipment for some functions (such as taking a bath with a liquefied petroleum gas water heater) before the natural gas pipeline is fully connected to all gas-using equipment (such as outdoor gas water heaters that have not been renovated and connected to the natural gas pipeline). In this way, there will be two gas pipelines in the home to transport two different types of gas. Natural gas is light and will float at the top of the space it is in, while liquefied petroleum gas is heavy and will fall to the bottom of the space it is in.

[0004] The traditional sound and light alarm is installed in a fixed position. When encountering the above two types of gas leaks, the leaked gas will be distributed up and down. The traditional sound and light alarm can only detect one place and cannot achieve more comprehensive gas leak detection. Therefore, we designed a sound and light alarm. Summary of the invention

[0005] The present invention provides an audible and visual alarm to solve the technical problem that the traditional audible and visual alarm in the related technology is fixed in installation position. When encountering the above two types of gas leakage, the leaked gas will be distributed up and down. The traditional audible and visual alarm can only detect one place and cannot achieve more comprehensive gas leakage detection.

[0006] A sound and light alarm comprises a shell in which the sound and light alarm is fixedly installed, a fixed driving mechanism is fixedly connected to the bottom of the shell, the fixed driving mechanism comprises a positioning tube, a flip extension mechanism is rotatably connected to the positioning tube, a suction mechanism is fixedly installed on the flip extension mechanism, the suction mechanism comprises a first extension tube, a plurality of second extension tubes are slidably connected inside the first extension tube in sequence, the flip extension mechanism is used to drive the suction mechanism to continuously expand and merge, and absorb gas from different positions and directions; a suction nozzle is fixedly connected to the bottom of the second extension tube, the suction nozzle will change its shape as the first extension tube and the second extension tube are expanded and merged, thereby changing the suction mode of the second extension tube.

[0007] As a further optimization scheme of the present invention, the positioning tube is fixedly connected to the shell, a plurality of fixing frames are fixedly connected to the inner wall of the inner cavity of the positioning tube, a motor cover is fixedly connected inside the plurality of fixing frames, a dual-axis motor is fixedly installed inside the motor cover, a fan blade is fixedly connected to the top power output shaft of the dual-axis motor, and a drive shaft is fixedly connected to the bottom power output shaft of the dual-axis motor.

[0008] As a further optimization scheme of the present invention, the flip extension mechanism includes an extension component and a rotating tube. The rotating tube is rotatably connected to the positioning tube, the rotating tube is fixedly connected to the driving shaft, a toggle component is rotatably installed inside the rotating tube, the toggle component is fixedly connected to a fixed frame, an air pipe is rotatably installed through the rotating tube, the air pipe is fixedly connected to a mounting plate, two driving columns are fixedly connected to the mounting plate, and a sliding component is fixedly connected to the driving column.

[0009] As a further optimization scheme of the present invention, the toggle assembly includes a sealing ring, which is rotatably connected to a rotating tube, and the sealing ring is fixedly connected to a fixed frame. A first fixed tube is fixedly connected to the sealing ring, and a plurality of driving grooves are provided on the first fixed tube. A second fixed tube is arranged inside the first fixed tube, and the second fixed tube is fixedly connected to the sealing ring, and a limiting plate is fixedly connected to the second fixed tube.

[0010] As a further optimization solution of the present invention, the sliding assembly includes a second sliding tube, the second sliding tube is slidably connected to the first sliding tube, and the first sliding tube is fixedly connected to the first extension tube.

[0011] As a further optimization scheme of the present invention, the extension component includes a mounting cover, which is fixedly connected to the rotating tube, a reciprocating screw is arranged inside the rotating tube, the reciprocating screw is rotatably connected to the rotating tube, a first pulley is fixedly connected to the reciprocating screw, a second pulley is fixedly connected to the air pipe, the first pulley and the second pulley are connected by a first driving belt, a threaded drive frame is threadedly connected to the reciprocating screw, the threaded drive frame is slidably connected to the mounting cover, an extension plate is fixedly connected to the top of the threaded drive frame, a drive ring is arranged between the two extension plates, and the drive ring is fixedly connected to the first sliding tube.

[0012] As a further optimization scheme of the present invention, a limiting ring is fixedly connected to the second extension tube, and the air suction nozzle includes a counterweight ring, which is fixedly connected to the second extension tube. A plurality of mounting grooves are provided on the second extension tube, and a third rotating shaft is fixedly connected inside the mounting groove. A rotating plate is rotatably connected to the third rotating shaft, and a torsion spring is sleeved on the third rotating shaft. Two ends of the torsion spring are respectively connected to the rotating plate and the counterweight ring, and a folding soft cover is fixedly connected to the bottom of the counterweight ring, and the folding soft cover is fixedly connected to the rotating plate.

[0013] As a further optimization scheme of the present invention, a connecting block is fixedly connected to the top of the second sliding tube, a driving gear rack is fixedly connected to the top of the connecting block, a first gear is meshed on the driving gear rack, a first rotating shaft is fixedly connected to the first gear, the first rotating shaft is rotatably connected to the first sliding tube, a third pulley is fixedly connected to the first rotating shaft, a second rotating shaft is rotatably installed on the first sliding tube, a fourth pulley is fixedly connected to the second rotating shaft, the third pulley and the fourth pulley are connected via a second driving belt, and a cam is fixedly connected to the second rotating shaft.

[0014] As a further optimization scheme of the present invention, a positioning plate is fixedly connected to the top of the first extension tube, a sliding rod is slidably connected to the positioning plate, a pressure plate is fixedly connected to the sliding rod, a first spring is sleeved on the sliding rod, and both ends of the first spring are respectively connected to the positioning plate and the pressure plate, a hose is arranged between the positioning plate and the pressure plate, and the hose is fixedly connected and communicated with the first extension tube.

[0015] As a further optimization solution of the present invention, a threaded cover is arranged below the shell, and the threaded cover is threadedly connected to the shell.

[0016] The beneficial effects of the present invention are: 1. The sound and light alarm described in the present invention aims at the density difference between natural gas and liquefied petroleum gas. The alarm can rotate and flip around the positioning tube under the drive of a dual-axis motor through a cleverly designed first extension tube and a multi-section second extension tube structure. When the second extension tube is located above the first extension tube, it can shrink to absorb the upper gas in the space to detect natural gas leakage; when it is located below, it is unfolded close to the bottom of the space to absorb the lower gas to detect liquefied petroleum gas leakage, effectively avoiding the detection blind area caused by the distribution characteristics of the gas, and greatly improving the accuracy of different types of gas leakage detection; the shape of the suction nozzle changes with the unfolding and merging of the first extension tube and the second extension tube. When it is in the upper layer, it is cylindrical, and its suction is uniform and stable, which is conducive to the accurate absorption of the upper gas in a small range, ensuring the accuracy of the detection of lighter gas such as natural gas; when it is in the lower layer, it becomes trumpet-shaped, using the Venturi effect to generate strong suction, and can absorb the heavier liquefied petroleum gas in the lower layer over a long distance and a large range, further enhancing the targeted detection capability of gas at different locations.

[0017] 2. In the sound and light alarm described in the present invention, the rotating tube and the positioning tube in the flipping and extending mechanism are rotatably connected, and the rotation of the gas pipe can drive the driving column to move. Combined with the driving groove of the first fixed tube and the limiting plate of the second fixed tube, the first extension tube and the second extension tube can not only rotate but also flip. The movement trajectory is rich and diverse, and the position can be flexibly adjusted in three-dimensional space to fully cover the space, significantly expand the detection range, and more effectively take into account the gas leakage in every corner of the space; the rotation of the gas pipe can also drive the reciprocating screw to rotate through the pulley and the drive belt, thereby moving the threaded drive frame, pushing the drive ring to drive the first sliding tube to move, allowing the first extension tube and the second extension tube to further extend during the rotation and flipping process, further expanding the detectable spatial area, and effectively improving the integrity of gas leakage detection in a large area.

[0018] 3. In the sound and light alarm described in the present invention, when the first sliding tube moves, the cam is rotated to squeeze the pressure plate through a series of transmission structures, and the pressure plate squeezes and releases the hose continuously. Each squeezing causes the air in the hose to be compressed and discharged, and the air pressure increases. When released, the air pressure decreases, forming a large air pressure difference, thereby promoting the first extension tube and the second extension tube to increase the suction volume, speeding up the gas suction speed, and being able to collect more gas samples for detection per unit time, thereby improving the detection efficiency and reducing the risk of missed detection due to insufficient suction; the fan blades connected to the power output shaft at the top of the dual-axis motor rotate to accelerate the gas flow and provide power assistance for the suction mechanism, so that the gas can pass through the gas supply pipe, the first extension tube, the second extension tube and the suction nozzle more smoothly into the detection end of the sound and light alarm, and cooperate with the hose compression to further enhance the overall suction effect and ensure the efficiency and reliability of gas leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the thread cover of the present invention; Figure 3 It is a schematic diagram of the internal structure of the positioning tube, the rotating tube and the mounting cover of the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle; Figure 6 It is a structural schematic diagram of the toggle assembly of the present invention; Figure 7 It is a schematic diagram of the connection between the gas delivery pipe and the driving column of the present invention; Figure 8It is a schematic diagram of the connection between the first sliding tube and the second sliding tube of the present invention; Fig. 9 It is a schematic diagram of the connection between the first rotating shaft and the second rotating shaft of the present invention; Fig.10 It is a schematic diagram of the connection between the positioning plate and the pressing plate of the present invention; Fig.11 It is a schematic diagram of the connection between the first extension tube and the second extension tube of the present invention; Fig.12 It is a structural schematic diagram of the air suction nozzle of the present invention.

[0020] In the figure: 1, housing; 101, warning light; 102, buzzer; 2, threaded cover; 301, positioning tube; 302, fan blade; 303, dual-axis motor; 304, motor cover; 305, fixed frame; 306, drive shaft; 401, installation cover; 402, rotating tube; 403, first fixed tube; 404, first sliding tube; 405, drive ring; 406, air pipe; 407, second sliding tube; 408, drive column; 409, mounting plate; 410, sealing ring; 411, drive groove; 412, limit plate; 413, second fixed tube; 501, reciprocating screw; 502, threaded drive frame; 503, extension Extension plate; 504, first drive belt; 505, first pulley; 506, second pulley; 601, second drive belt; 602, third pulley; 603, first rotating shaft; 604, drive gear rack; 605, connecting block; 606, first gear; 607, second rotating shaft; 608, cam; 609, fourth pulley; 610, first spring; 611, slide bar; 612, positioning plate; 613, pressure plate; 701, first extension tube; 702, hose; 703, second extension tube; 801, limiting ring; 802, folding soft cover; 803, third rotating shaft; 804, counterweight ring; 805, rotating plate. DETAILED DESCRIPTION

[0021] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0022] like Figures 1 to 12As shown, a sound and light alarm of an embodiment of the present invention includes a shell 1, inside which a sound and light alarm with an alarm light 101, a buzzer 102, and a gas sensor is fixedly installed, the bottom of the shell 1 is fixedly connected to a fixed driving mechanism, the fixed driving mechanism includes a positioning tube 301, the positioning tube 301 is rotatably connected to a flip extension mechanism, an air suction mechanism is fixedly installed on the flip extension mechanism, the air suction mechanism includes a first extension tube 701, the first extension tube 701 has a plurality of second extension tubes 703 slidingly connected thereto which shrink in sequence, the flip extension mechanism drives the air suction mechanism to unfold and merge continuously to absorb gas at different positions and the suction angle can be switched; the bottom of the second extension tube is fixedly connected to an air suction nozzle, the air suction nozzle will change shape as the first extension tube and the second extension tube are unfolded and merged, and switch between a trumpet shape and a round mouth shape.

[0023] Please refer to Figure 3 The positioning tube 301 is fixedly connected to the shell 1, and a plurality of fixing frames 305 are fixedly connected to the inner wall of the inner cavity of the positioning tube 301. A motor cover 304 is fixedly connected inside the plurality of fixing frames 305. A dual-axis motor 303 is fixedly installed inside the motor cover 304. The fan blades 302 are fixedly connected to the top power output shaft of the dual-axis motor 303, and the drive shaft 306 is fixedly connected to the bottom power output shaft of the dual-axis motor 303.

[0024] Please refer to Figure 3 , Figure 7 The flip extension mechanism includes an extension component and a rotating tube 402. The rotating tube 402 is rotatably connected to the positioning tube 301. The rotating tube 402 is fixedly connected to the driving shaft 306. A toggle component is rotatably installed inside the rotating tube 402. The toggle component is fixedly connected to the fixed frame 305. An air pipe 406 is rotatably installed through the rotating tube 402. The air pipe 406 is fixedly connected to a mounting plate 409. Two driving columns 408 are fixedly connected to the mounting plate 409. A sliding component is fixedly connected to the driving column 408.

[0025] Please refer to Figure 6 The toggle assembly includes a sealing ring 410, which is rotatably connected to the rotating tube 402, and the sealing ring 410 is fixedly connected to the fixing frame 305. The sealing ring 410 is fixedly connected to the first fixing tube 403, and a plurality of driving grooves 411 are provided on the first fixing tube 403. A second fixing tube 413 is arranged inside the first fixing tube 403, and the second fixing tube 413 is fixedly connected to the sealing ring 410, and a limiting plate 412 is fixedly connected to the second fixing tube 413.

[0026] Please refer to Figure 8 The sliding assembly includes a second sliding tube 407 , the first sliding tube 404 is slidably connected to the second sliding tube 407 , and the first sliding tube 404 is fixedly connected to the first extension tube 701 .

[0027] Please refer to Figures 3 to 6 The extension component includes a mounting cover 401, which is fixedly connected to the rotating tube 402. A reciprocating screw rod 501 is arranged inside the rotating tube 402. The reciprocating screw rod 501 is rotatably connected to the rotating tube 402. A first pulley 505 is fixedly connected to the reciprocating screw rod 501, and a second pulley 506 is fixedly connected to the air pipe 406. The first pulley 505 and the second pulley 506 are connected by a first driving belt 504. A threaded drive frame 502 is threadedly connected to the reciprocating screw rod 501, and the threaded drive frame 502 is slidably connected to the mounting cover 401. An extension plate 503 is fixedly connected to the top of the threaded drive frame 502, and a drive ring 405 is arranged between the two extension plates 503. The drive ring 405 is fixedly connected to the first sliding tube 404.

[0028] The present invention mainly relies on sound and light alarms, a first extension tube 701, and multiple second extension tubes 703 to detect and alarm for gas leaks. Due to the differences between natural gas and liquefied petroleum gas, natural gas is lighter than air and will float on the top of the space where it is located, while liquefied petroleum gas is heavier than air and will be at the bottom of the space where it is located. Specifically, when using the sound and light alarm to detect whether there is a gas leak in the alarm space, the shell 1 is first fixed by an external fixed bracket, and then the first extension tube 701 and the second extension tube 703 are driven to flip, and the multiple second extension tubes 703 are continuously expanded and merged in the first extension tube 701, so that the sound and light alarm can absorb different gases at the upper and lower ends and transport the gas to the sound and light alarm to detect whether the gas contains gas. The gas transported in will gather around the gas sensor, and the gas The sensor continuously monitors the gas concentration in the surrounding gas. When the concentration of gas in the air reaches a certain threshold, the sensor will sense this change and convert it into an electrical signal; the electrical signal output by the sensor is transmitted to the control circuit, and the control circuit amplifies, filters, and performs analog-to-digital conversion on the signal, converts it into a digital signal, and compares it with the preset alarm threshold; when the detected gas concentration signal exceeds the alarm threshold, the control circuit triggers the alarm device, drives the buzzer 102 to emit a loud alarm sound, and lights up the alarm light 101 at the same time, to remind the user of gas leakage with sound and light signals; alarm release and recovery: when the gas concentration drops below the alarm threshold, the control circuit stops driving the alarm device, the sound and light alarm signal is released, and the alarm returns to the normal monitoring state, effectively judging whether there is a gas leak in the space.

[0029] In order to detect whether there is leakage of different gases in two groups of pipelines, the present invention uses the dual-axis motor 303 in the driving mechanism to drive the first extension tube 701 and the second extension tube 703 to rotate around the positioning tube 301. During the rotation, the driving groove 411 on the first fixed tube 403 and the limiting plate 412 on the second fixed tube 413 are used to turn the first extension tube 701 and the second extension tube 703. When the second extension tube 703 is located above the first extension tube 701, the second extension tube 703 is completely retracted into the first extension tube 701, so that the positioning tube 301 can be absorbed. The air in the upper layer of the space can be detected to detect whether there is any natural gas in the air in the upper layer of the space, and when the second extension tube 703 is located below the first extension tube 701, due to its own weight, the multiple sections of the second extension tube 703 will all slide down, so that the air intake port can be closer to the bottom of the space, so that the air in the lower layer of the space can be absorbed to detect whether there is any liquefied petroleum gas in the air in the lower layer of the space, and the first extension tube 701 and the second extension tube 703 can not only rotate but also flip over, and the flipping can involve more motion trajectories, which can more effectively take into account the leakage detection of natural gas and liquefied petroleum gas within a certain range of the space.

[0030] Furthermore, during the flipping of the first extension tube 701 and the second extension tube 703, the gas pipe 406 will also rotate accordingly. The rotation of the gas pipe 406 will cause the driving ring 405 in the extension assembly to move. The movement of the driving ring 405 can enable the first sliding tube 404 to drive the first extension tube 701 and the second extension tube 703 to move. In this way, the first extension tube 701 and the second extension tube 703 will be further extended during the process of rotating and flipping around the positioning tube 301, thereby expanding the space involved and further taking into account the leakage detection of natural gas and liquefied petroleum gas in a larger range of the space.

[0031] Please refer to Fig.10 , Fig.12, a limiting ring 801 is fixedly connected to the second extension tube 703, and the air suction nozzle includes a counterweight ring 804, which is fixedly connected to the second extension tube 703. A plurality of mounting grooves are provided on the second extension tube 703, and a third rotating shaft 803 is fixedly connected inside the mounting groove. A rotating plate 805 is rotatably connected to the third rotating shaft 803, and a torsion spring is sleeved on the third rotating shaft 803. The two ends of the torsion spring are respectively connected to the rotating plate 805 and the counterweight ring 804. A folding soft sleeve 802 is fixedly connected to the bottom of the counterweight ring 804, and the folding soft sleeve 802 is fixedly connected to the rotating plate 805; the air suction nozzle replaces the air suction end of the second extension tube 703, and when the second The extension tube 703 is above the first extension tube 701, and such an air suction nozzle is a cylindrical air suction nozzle. The structure of the cylindrical air suction nozzle makes its suction force evenly distributed. When absorbing gas, the airflow converges from all sides to the center evenly to form a stable vortex, which is more suitable for absorbing gas in a small range in the upper layer of the space. When the second extension tube 703 is below the first extension tube 701, such an air suction nozzle is a trumpet-shaped air suction nozzle. When the gas enters the trumpet-shaped air suction nozzle from the large mouth and flows to the small mouth, the flow rate increases and the pressure decreases, generating a stronger suction force at the entrance, which can absorb the lower layer gas in the space over a longer distance and a larger range, thereby promoting the detection of gas leaks.

[0032] Please refer to Figure 5 , Figure 10 to Figure 11The top of the second sliding tube 407 is fixedly connected with a connecting block 605, and the top of the connecting block 605 is fixedly connected with a driving gear rack 604. The driving gear rack 604 is meshed with a first gear 606, and the first gear 606 is fixedly connected with a first rotating shaft 603. The first rotating shaft 603 is rotatably connected to the first sliding tube 404, and the third pulley 602 is fixedly connected to the first rotating shaft 603. The second rotating shaft 607 is rotatably installed on the first sliding tube 404, and the fourth pulley 609 is fixedly connected to the second rotating shaft 607. The third pulley 602 and the fourth pulley 609 are connected through a second driving belt 601. The second rotating shaft 607 is fixedly connected with a cam 608. The top of the first extension tube 701 is fixedly connected with a positioning plate 612, and the positioning plate 612 is slidably connected with a sliding rod 611, and the sliding rod 611 is fixedly connected with a pressing plate 613. The sliding rod 611 The upper sleeve is provided with a first spring 610, and the two ends of the first spring 610 are respectively connected to the positioning plate 612 and the pressure plate 613. A hose 702 is provided between the positioning plate 612 and the pressure plate 613, and the hose 702 is fixedly connected and communicated with the first extension tube 701; the compression of the hose 702 can promote the first extension tube 701 and the second extension tube 703 to increase the suction volume. When the first extension tube 701 and the second extension tube 703 are moved by the first sliding tube 404, the cam 608 will rotate to squeeze the pressure plate 613, so that the pressure plate 613 continuously squeezes and releases the hose 702. Each time it is squeezed, the air in the hose 702 is compressed and discharged, and the air pressure increases; each time it is released, the volume in the hose 702 is restored, and the air pressure is reduced. The larger air pressure difference can cause more gas to be inhaled per unit time, thereby increasing the gas suction volume and expanding the range of gas leakage detection.

[0033] Working principle: after the shell 1 is fixedly installed, the threaded cover 2 is rotated, the threaded cover 2 is disassembled, and the double-axis motor 303 is started. The double-axis motor 303 will drive the fan blades 302 to rotate, and the fan blades 302 will absorb the gas in the space through the gas pipe 406, the first extension pipe 701, the second extension pipe 703, and the suction nozzle. The gas drawn in will be transported to the detection end of the sound and light alarm for detection to determine whether the gas contains fuel gas; after the double-axis motor 303 is started, it will also drive the drive shaft 306 to rotate, and the drive shaft 306 will drive the rotating tube 402 to rotate, and the rotation of the rotating tube 402 will drive the gas pipe 406, the first extension pipe 701, the second extension pipe 703, and the suction nozzle. The gas pipe 406 rotates together, and the driving column 408 is driven to rotate during the rotation of the gas pipe 406. When the driving column 408 rotates to the driving groove 411, the gas pipe 406 rotates due to the limit plate 412 and the driving groove 411. In this way, the first sliding tube 404 and the second sliding tube 407 will also drive the first extension tube 701 and the second extension tube 703 to rotate. When the second extension tube 703 is above the first extension tube 701, the first extension tube 701 and the second extension tube 703 are contracted together, which can absorb the upper gas in the space and detect whether the upper gas contains fuel gas. When the second extension tube 703 is below the first extension tube 701, the first extension tube 701 and the second extension tube 703 are unfolded, and the first extension tube 701 and the second extension tube 703 can extend to the lower part of the space, absorb gas from the lower part, and detect whether the lower gas contains fuel gas; and in the process of the first extension tube 701 and the second extension tube 703 turning over, when the first extension tube 701 and the second extension tube 703 are combined, the limiting ring 801 limits the rotating plate 805, so that the suction nozzle is in a cylindrical suction nozzle, which can further stabilize the suction, and the first extension tube 701 and the second extension tube 703 are unfolded. , the suction nozzle will be in a trumpet-shaped suction nozzle, which can absorb gas in a larger range for detection, and the rotation of the gas delivery pipe 406 will also drive the reciprocating screw rod 501 to rotate through the first pulley 505, the second pulley 506, and the first driving belt 504, the reciprocating screw rod 501 drives the threaded driving frame 502 to move, the threaded driving frame 502 drives the extension plate 503 to move, the extension plate 503 drives the driving ring 405 to move, and the driving ring 405 drives the first sliding tube 404 to move, so that the first extension tube 701 and the second extension tube 703 can not only rotate but also flip, and can further expand the suction range on this basis;The movement of the first sliding tube 404 will drive the movement of the first gear 606. The movement of the first gear 606 will rotate due to the action of the driving gear rack 604. The rotation of the first gear 606 will drive the first rotating shaft 603 to rotate. The first rotating shaft 603 drives the second rotating shaft 607 to rotate through the third pulley 602, the fourth pulley 609, and the second driving belt 601. The second rotating shaft 607 drives the cam 608 to rotate. The cam 608 squeezes the pressing plate 613, so that the pressing plate 613 compresses and releases the hose 702. The compression of the hose 702 can increase the gas intake amount and expand the detection range of gas leakage. ;

[0034] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A sound and light alarm, comprising a housing (1) in which the sound and light alarm is fixedly mounted, characterized in that: The bottom of the shell (1) is fixedly connected to a fixed driving mechanism, the fixed driving mechanism comprising a positioning tube (301), the positioning tube (301) being rotatably connected to a flip extension mechanism, the flip extension mechanism being fixedly mounted with an air suction mechanism, the air suction mechanism comprising a first extension tube (701), the first extension tube (701) being internally slidably connected to a plurality of second extension tubes (703) which shrink in sequence, the flip extension mechanism driving the air suction mechanism to continuously expand and merge so as to absorb gas at different positions and capable of switching the suction angle; The bottom of the second extension tube (703) is fixedly connected with an air suction nozzle, and the air suction nozzle changes shape as the first extension tube (701) and the second extension tube (703) are unfolded and combined, switching between a trumpet-shaped shape and a round-mouth shape.

2. The sound and light alarm according to claim 1, characterized in that: The positioning tube (301) is fixedly connected to the shell (1); a plurality of fixing frames (305) are fixedly connected to the inner wall of the inner cavity of the positioning tube (301); a motor cover (304) is fixedly connected inside the plurality of fixing frames (305); a dual-axis motor (303) is fixedly installed inside the motor cover (304); a fan blade (302) is fixedly connected to the top power output shaft of the dual-axis motor (303); and a drive shaft (306) is fixedly connected to the bottom power output shaft of the dual-axis motor (303).

3. The sound and light alarm according to claim 2, characterized in that: The flip extension mechanism comprises an extension component and a rotating tube (402); the rotating tube (402) is rotatably connected to the positioning tube (301); the rotating tube (402) is fixedly connected to the driving shaft (306); a toggle component is rotatably mounted inside the rotating tube (402); the toggle component is fixedly connected to the fixing frame (305); an air supply pipe (406) is rotatably mounted on the rotating tube (402); a mounting plate (409) is fixedly connected to the air supply pipe (406); two driving columns (408) are fixedly connected to the mounting plate (409); and a sliding component is fixedly connected to the driving column (408).

4. The sound and light alarm according to claim 3, characterized in that: The toggle assembly comprises a sealing ring (410), the sealing ring (410) being rotatably connected to a rotating tube (402), the sealing ring (410) being fixedly connected to a fixing frame (305), the sealing ring (410) being fixedly connected to a first fixing tube (403), the first fixing tube (403) being provided with a plurality of driving grooves (411), a second fixing tube (413) being arranged inside the first fixing tube (403), the second fixing tube (413) being fixedly connected to the sealing ring (410), and a limiting plate (412) being fixedly connected to the second fixing tube (413).

5. The sound and light alarm according to claim 4, characterized in that: The sliding assembly comprises a second sliding tube (407), the second sliding tube (407) being slidably connected to the first sliding tube (404), and the first sliding tube (404) being fixedly connected to the first extension tube (701).

6. The sound and light alarm according to claim 5, characterized in that: The extension assembly comprises a mounting cover (401), wherein the mounting cover (401) is fixedly connected to a rotating tube (402), a reciprocating screw rod (501) is arranged inside the rotating tube (402), the reciprocating screw rod (501) is rotatably connected to the rotating tube (402), a first belt pulley (505) is fixedly connected to the reciprocating screw rod (501), a second belt pulley (506) is fixedly connected to the air delivery pipe (406), the first belt pulley (505) and the second belt pulley (506) are connected via a first driving belt (504), a threaded drive frame (502) is threadedly connected to the reciprocating screw rod (501), the threaded drive frame (502) is slidably connected to the mounting cover (401), an extension plate (503) is fixedly connected to the top of the threaded drive frame (502), a drive ring (405) is arranged between the two extension plates (503), and the drive ring (405) is fixedly connected to the first sliding tube (404).

7. The sound and light alarm according to claim 1, characterized in that: A limiting ring (801) is fixedly connected to the second extension tube (703), and the air suction nozzle includes a counterweight ring (804), and the counterweight ring (804) is fixedly connected to the second extension tube (703). A plurality of mounting grooves are provided on the second extension tube (703), and a third rotating shaft (803) is fixedly connected inside the mounting groove. A rotating plate (805) is rotatably connected to the third rotating shaft (803), and a torsion spring is sleeved on the third rotating shaft (803), and two ends of the torsion spring are respectively connected to the rotating plate (805) and the counterweight ring (804), and a folding soft sleeve (802) is fixedly connected to the bottom of the counterweight ring (804), and the folding soft sleeve (802) is fixedly connected to the rotating plate (805).

8. The sound and light alarm according to claim 5, characterized in that: The top of the second sliding tube (407) is fixedly connected to a connecting block (605), the top of the connecting block (605) is fixedly connected to a driving gear rack (604), the driving gear rack (604) is meshed with a first gear (606), the first gear (606) is fixedly connected to a first rotating shaft (603), the first rotating shaft (603) is rotatably connected to the first sliding tube (404), the first rotating shaft (603) is fixedly connected to a third pulley (602), the first sliding tube (404) is rotatably mounted with a second rotating shaft (607), the second rotating shaft (607) is fixedly connected to a fourth pulley (609), the third pulley (602) and the fourth pulley (609) are connected via a second driving belt (601), and the second rotating shaft (607) is fixedly connected to a cam (608).

9. The sound and light alarm according to claim 8, characterized in that: A positioning plate (612) is fixedly connected to the top of the first extension tube (701), a sliding rod (611) is slidably connected to the positioning plate (612), a pressing plate (613) is fixedly connected to the sliding rod (611), a first spring (610) is sleeved on the sliding rod (611), two ends of the first spring (610) are respectively connected to the positioning plate (612) and the pressing plate (613), a hose (702) is provided between the positioning plate (612) and the pressing plate (613), and the hose (702) is fixedly connected to and communicates with the first extension tube (701).

10. The sound and light alarm according to claim 1, characterized in that: A threaded cover (2) is provided below the housing (1), and the threaded cover (2) is threadably connected to the housing (1).

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