An acousto-optic alarm

Abstract

The application discloses an acousto-optic alarm, which comprises a shell, an alarm lamp and a loudspeaker installed on the shell, a protection cavity arranged on the shell, an opening arranged on the front part of the protection cavity, the loudspeaker arranged in the protection cavity, a push-pull mechanism and a swing mechanism arranged between the loudspeaker and the protection cavity, the push-pull mechanism comprising a limiting guide rail, a sliding seat, an extendable air bag and a gas filling and discharging control pump, the swing mechanism comprising a pneumatic motor, a curved member, an extendable swing rod and a rotating seat, a pressure relief valve arranged on the extendable air bag, and the gas outlet of the pressure relief valve being communicated with the air inlet of the pneumatic motor. When alarming, the gas filling and discharging control pump is started to fill the extendable air bag with air, the extendable air bag is elongated to push the loudspeaker out of the protection cavity, the pressure relief valve supplies air to the pneumatic motor after the loudspeaker is pushed out, the pneumatic motor drives the loudspeaker to swing through the swing mechanism, the covering range of the alarm sound is improved, the alarm effect is better, the loudspeaker can be retracted in ordinary times, the protection performance is good, and the service life of the equipment is long.

Description

Technical Field

[0001] This invention relates to the field of alarm device technology, and more particularly to an audible and visual alarm. Background Technology

[0002] Audible and visual alarms, also known as audible and visual sirens, are used in hazardous locations. When a detector detects a dangerous situation, it triggers the alarm to simultaneously emit both audible and visual alarm signals. They are widely used in industrial alarm systems in industries such as steel metallurgy, telecommunications towers, hoisting machinery, construction machinery, ports and docks, transportation, wind power generation, and ocean-going vessels. However, existing audible and visual alarms have a simple structure, the speaker (horn) remains stationary during alarm operation, the sound coverage is small, and their protective performance under normal conditions is poor, resulting in a short equipment lifespan. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and provides an audible and visual alarm device. When the alarm is triggered, the speaker (horn) can extend and swing, providing a wide sound coverage. Moreover, the speaker can be retracted when not in use, providing good protection and a long service life.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: A sound and light alarm includes a housing, on which an alarm light and a speaker are mounted. The housing has a protective cavity with an opening at the front. The speaker is located inside the protective cavity. A push-pull mechanism and a swing mechanism are provided between the speaker and the protective cavity. The push-pull mechanism includes a limiting guide rail, a sliding seat, a telescopic airbag, and an inflation / deflation control pump. The limiting guide rail is fixedly installed on the inner wall of the protective cavity. The limiting guide rail is slidably connected to the sliding seat. The sliding seat and the protective cavity are connected by the telescopic airbag. The telescopic airbag is fixedly connected to an inflation / deflation control pump via an air tube. The swing mechanism includes a pneumatic motor, a crank, a telescopic swing arm, and a rotating seat. The pneumatic motor is fixedly connected to the sliding seat, and the crank is fixedly mounted on the output end of the pneumatic motor. The speaker is fixedly mounted on the rotating seat, and the rotating seat is rotatably connected to the sliding seat. One end of the telescopic swing arm is fixedly connected to the rotating seat, and the other end of the telescopic swing arm is rotatably connected to the crank. The telescopic airbag is equipped with a pressure relief valve, and the vent of the pressure relief valve is connected to the air inlet of the pneumatic motor.

[0005] Further improvements include a lifting platform on the top of the housing, with the alarm light fixedly installed on the upper side of the lifting platform. A scissor lift mechanism is provided between the lower side of the lifting platform and the housing. The scissor lift mechanism includes a first link and a second link, which intersect each other and are hinged together in the middle. The upper end of the first link is slidably connected to the lifting platform, and the lower end of the first link is hinged to the housing. The upper end of the second link is hinged to the lifting platform, and the lower end of the second link is hinged to the sliding seat. A clearance groove is provided on the top of the housing.

[0006] To further improve the design, a protective cover is provided on the opening, with a first support rod hinged between the upper part of the protective cover and the lifting platform, and a second support rod hinged between the lower part of the protective cover and the sliding seat.

[0007] To further improve the design, a light strip is fixedly installed on the edge of the protective cover.

[0008] To further improve the design, the housing is equipped with a backup power supply and a wireless communication controller, and the backup power supply, alarm light, and speaker are all electrically connected to the wireless communication controller.

[0009] Further improvements include the addition of a transceiver antenna fixedly installed on the lifting platform, which is electrically connected to the wireless communication controller.

[0010] To further improve the system, several protective pillars are provided around the alarm light, with the lower ends of the protective pillars fixedly connected to the housing. The lifting platform is provided with guide holes, which are slidably connected to the protective pillars.

[0011] To further improve the system, a reinforcing ring is fixedly installed at the upper end of several of the protective columns, and a cleaning brush for cleaning the surface of the alarm light is fixedly installed on the inner side of the reinforcing ring.

[0012] To further improve the system, several protective rings are fixedly installed on the protective column, and support springs are provided between adjacent protective rings, between the protective rings and the reinforcing rings, and between the protective rings and the lifting platform.

[0013] To further improve the design, a return spring is provided between the rotating seat and the sliding seat.

[0014] The beneficial effects of this invention are: when an alarm is triggered, the inflation / deflation control pump starts to inflate the telescopic airbag, which extends to push out the movable seat and speaker inside the protective cavity. After being pushed out, the pressure relief valve supplies air to the pneumatic motor, which drives the speaker to swing through the swing mechanism, thereby improving the coverage of the alarm sound and making the alarm effect better. Moreover, the speaker can be retracted when not in use, providing good protection and extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure in the collapsed state of Example 1;

[0016] Figure 2 This is a schematic diagram of the alarm state in Example 1;

[0017] Figure 3 This is a schematic diagram of the structure in the collapsed state of Example 2;

[0018] Figure 4 This is a schematic diagram of the alarm state in Example 2;

[0019] Figure 5This is a schematic diagram of the structure in the stowed state of Example 3;

[0020] Figure 6 This is a schematic diagram of the alarm state in Example 3;

[0021] Figure 7 This is a schematic diagram of the swing mechanism;

[0022] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Alarm light; 3. Speaker; 4. Protective cavity; 5. Opening; 6. Limiting guide rail; 7. Sliding seat; 8. Telescopic airbag; 9. Inflation / depression control pump; 10. Pneumatic motor; 11. Crank; 12. Telescopic swing arm; 13. Rotating seat; 14. Pressure relief valve; 15. Lifting platform; 16. First connecting rod; 17. Second connecting rod; 18. Clearance slot; 19. Protective cover; 20. First support rod; 21. Second support rod; 22. Light strip; 23. Transceiver antenna; 24. Protective column; 25. Guide hole; 26. Reinforcing ring; 27. Cleaning brush; 28. Protective ring; 29. ​​Support spring; 30. Return spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] See attached document Figure 1-2 This embodiment 1 describes an audible and visual alarm, comprising a housing 1, on which an alarm light 2 and a speaker 3 are mounted. The housing 1 has a protective cavity 4 with an opening 5 at its front. The speaker 3 is located inside the protective cavity 4. A push-pull mechanism and a swing mechanism are provided between the speaker 3 and the protective cavity 4. The push-pull mechanism includes a limiting guide rail 6, a sliding seat 7, a telescopic airbag 8, and an inflation / deflation control pump 9. The limiting guide rail 6 is fixedly installed on the inner wall of the protective cavity 4 and is slidably connected to the sliding seat 7. The sliding seat 7 is fixedly connected to the protective cavity 4 via the telescopic airbag 8. The telescopic airbag 8... The air tube is connected to the inflation / deflation control pump 9; the swing mechanism includes a pneumatic motor 10, a crank 11, a telescopic swing arm 12, and a rotating seat 13. The pneumatic motor 10 is fixedly connected to the sliding seat 7, and the output end of the pneumatic motor 10 is fixedly mounted on the crank 11. The speaker 3 is fixedly mounted on the rotating seat 13, and the rotating seat 13 is rotatably connected to the sliding seat 7. One end of the telescopic swing arm 12 is fixedly connected to the rotating seat 13, and the other end of the telescopic swing arm 12 is rotatably connected to the crank 11. The telescopic airbag 8 is provided with a pressure relief valve 14, and the vent of the pressure relief valve 14 is connected to the air inlet of the pneumatic motor 10.

[0025] Working principle: Generally, sound and light alarms include detectors and alarm control hosts. When the detector detects a dangerous situation, it sends a feedback signal to the alarm control host. The alarm control host then controls the speaker 3 and alarm light 2 on the sound and light alarm to emit sound and light alarm signals. The above detection and alarm processes are existing technologies and will not be described in detail. When an alarm is triggered, the inflation / deflation control pump 9 inflates the telescopic airbag 8, causing it to expand and extend. This pushes the sliding seat 7 outward on the limit guide rail 6, thus pushing the speaker 3 out of the protective cavity 4. After the speaker 3 is pushed out, the telescopic airbag 8 continues to inflate. When the internal air pressure of the telescopic airbag 8 exceeds the pressure relief valve 14, the pressure relief valve 14 supplies air to the pneumatic motor 10, driving the impeller inside the pneumatic motor 10 to rotate. The rotation of the impeller drives the crank component 11 to rotate. Each rotation of the crank component 11 causes the telescopic swing arm 12 to swing left and right once. The telescopic swing arm 12 drives the rotating seat 13 to rotate left and right, thereby realizing the swing function of the speaker 3. When the speaker 3 broadcasts an alarm, it can emit sound waves in different directions, resulting in a wider sound coverage and a better alarm effect. After the fault is cleared, the speaker 3 is turned off, and the inflation / deflation control pump 9 draws air into the telescopic airbag 8. The telescopic airbag 8 contracts in volume, pushing the sliding seat 7 to slide inward on the limit guide rail 6, thereby pulling the speaker 3 back into the protective cavity 4. Normally, the speaker 3 can be retracted into the protective cavity 4, providing good protection and a long service life. After the pressure relief valve 14 stops supplying air to the pneumatic motor 10, the rotating seat 13 can easily rotate freely, making it convenient for the speaker 3 to be smoothly retracted into the protective cavity 4.

[0026] As attached Figure 3-4 As shown, in Embodiment 2, the difference from Embodiment 1 is that a lifting platform 15 is provided above the housing 1, and the alarm light 2 is fixedly installed on the upper side of the lifting platform 15. A scissor-type lifting mechanism is provided between the lower side of the lifting platform 15 and the housing 1. The scissor-type lifting mechanism includes a first connecting rod 16 and a second connecting rod 17. The first connecting rod 16 and the second connecting rod 17 intersect each other and are hinged together in the middle. The upper end of the first connecting rod 16 is slidably connected to the lifting platform 15, and the lower end of the first connecting rod 16 is hinged to the housing 1. The upper end of the second connecting rod 17 is hinged to the lifting platform 15, and the lower end of the second connecting rod 17 is hinged to the sliding seat 7. An clearance groove 18 is provided on the top of the housing 1.

[0027] With the above structural design, when the sliding seat 7 slides outward on the limiting guide rail 6, it pushes the lifting platform 15 upward via the second connecting rod 17, raising the warning height of the alarm light 2 and making the light alarm more conspicuous. When the sliding seat 7 slides inward on the limiting guide rail 6, it pulls the lifting platform 15 downward via the second connecting rod 17, lowering the height of the alarm light 2 so that it is not easily damaged by collisions, and the descent action can also indicate whether the alarm has been cleared, making it more intuitive.

[0028] Preferably, the opening 5 is provided with a protective cover. A first support rod 20 is hinged between the upper part of the protective cover 19 and the lifting platform 15, and a second support rod 21 is hinged between the lower part of the protective cover 19 and the sliding seat 7. The second support rod 21 is located on both sides of the speaker 3, and there is no movement interference between them. When the lifting platform 15 rises and the sliding seat 7 is pushed out, the protective cover 19 opens upwards via the first support rod 20 and the second support rod 21, respectively, facilitating the removal of the speaker 3. When the speaker 3 emits sound waves for alarm, the protective cover 19 can reflect the upward sound waves downwards, enhancing the alarm volume to the ground, reducing energy loss of the sound waves in the air, and improving the alarm effect. When the lifting platform 15 descends and the sliding seat 7 retracts, the protective cover 19 closes downwards via the first support rod 20 and the second support rod 21, respectively, covering the opening 5 and improving the dustproof, waterproof, and impact-resistant properties of the speaker 3.

[0029] Preferably, a light strip 22 is fixedly installed on the edge of the protective cover 19 to improve the lighting and warning functions.

[0030] Preferably, the housing 1 is equipped with a backup power supply and a wireless communication controller. The backup power supply, alarm light 2, and speaker 3 are all electrically connected to the wireless communication controller. In the event of a power outage, the alarm can activate the backup power supply to power the device, and receive or transmit wireless signals through the wireless communication controller to promptly activate the alarm light 2 and speaker 3. A transceiver antenna 23 is fixedly installed on the lifting platform 15 and is electrically connected to the wireless communication controller. When the transceiver antenna 23 rises with the lifting platform 15, it can increase the signal strength of the wireless communication controller during an alarm. When the transceiver antenna 23 descends with the lifting platform 15, it can be retracted to prevent accidental damage. A camera or other monitoring equipment can also be installed on the lifting platform 15. A push-button switch can also be installed on the top of the lifting platform 15 for interconnection, enabling the activation of other equipment such as fire extinguishing equipment through lifting, achieving joint safety protection.

[0031] As attached Figure 5-6 As shown in Embodiment 3, the difference from Embodiment 2 is that several protective columns 24 are provided around the alarm light 2. The lower ends of the protective columns 24 are fixedly connected to the housing 1. The lifting platform 15 is provided with guide holes 25, which are slidably connected to the protective columns 24. When the lifting platform 15 rises, the protective columns 24 move downward relative to the alarm light 2, reducing the obstruction of the light and facilitating the replacement of the alarm light 2. When the lifting platform 15 descends, the protective columns 24 move upward relative to the alarm light 2, providing protection around it. The cooperation between the guide holes 25 and the protective columns 24 can improve the stability of the lifting platform 15 during lifting.

[0032] Preferably, a reinforcing ring 26 is fixedly installed at the upper end of several of the protective columns 24, and a cleaning brush 27 for cleaning the surface of the alarm light 2 is fixedly installed on the inner side of the reinforcing ring 26. The reinforcing ring 26 can improve the structural strength of the protective column 24 and improve the protective performance. The cleaning brush 27 can automatically clean the dust on the surface of the alarm light 2 during the raising and lowering process, ensuring the light transmittance of the alarm light surface.

[0033] Preferably, a plurality of protective rings 28 are fixedly installed on the protective column 24, and support springs 29 are provided between adjacent protective rings 28, between protective rings 28 and reinforcing rings 26, and between protective rings 28 and lifting platform 15. When the alarm light 2 rises with the lifting platform 15, the support springs 29 are compressed under the pressure of the reinforcing rings 26 and the lifting platform 15, and the multiple protective rings 28 gather and stack together. When the alarm light 2 descends with the lifting platform 15, the multiple protective rings 28 unfold under the left and right support springs 29, further strengthening the protective cage structure formed by the protective column 24 and greatly enhancing the protective performance.

[0034] Preferably, a return spring 30 is provided between the rotating seat 13 and the sliding seat 7. The return spring 30 can be a torsion spring or a tension spring. A torsion spring can be installed on the rotating shaft of the rotating seat 13. If it is a tension spring, its two ends are fixedly connected to the rotating seat 13 and the sliding seat 7 respectively. The function of the return spring 30 is to facilitate the return of the speaker 3 to its original position and prevent it from colliding with the two sides of the opening 5 when it is retracted.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art will understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A sound and light alarm, comprising a housing (1), wherein an alarm light (2) and a speaker (3) are mounted on the housing (1), characterized in that: The housing (1) is provided with a protective cavity (4), and the front of the protective cavity (4) is provided with an opening (5). The speaker (3) is located inside the protective cavity (4). A push-pull mechanism and a swing mechanism are provided between the speaker (3) and the protective cavity (4). The push-pull mechanism includes a limiting guide rail (6), a sliding seat (7), a telescopic airbag (8), and an inflation / deflation control pump (9). The limiting guide rail (6) is fixedly installed on the inner wall of the protective cavity (4). The limiting guide rail (6) is slidably connected to the sliding seat (7). The sliding seat (7) and the protective cavity (4) are fixedly connected by the telescopic airbag (8). The telescopic airbag (8) is connected to the inflation / deflation control pump (9) through an air pipe. The swing mechanism The device includes a pneumatic motor (10), a crank (11), a telescopic rocker arm (12), and a rotating seat (13). The pneumatic motor (10) is fixedly connected to the sliding seat (7), and the output end of the pneumatic motor (10) is fixedly mounted on the crank (11). The loudspeaker (3) is fixedly mounted on the rotating seat (13), and the rotating seat (13) is rotatably connected to the sliding seat (7). One end of the telescopic rocker arm (12) is fixedly connected to the rotating seat (13), and the other end of the telescopic rocker arm (12) is rotatably connected to the crank (11). The telescopic airbag (8) is provided with a pressure relief valve (14), and the vent of the pressure relief valve (14) is connected to the air inlet of the pneumatic motor (10). A lifting platform (15) is provided above the housing (1). The alarm light (2) is fixedly installed on the upper side of the lifting platform (15). A scissor lifting mechanism is provided between the lower side of the lifting platform (15) and the housing (1). The scissor lifting mechanism includes a first link (16) and a second link (17). The first link (16) and the second link (17) intersect each other and are hinged together in the middle. The upper end of the first link (16) is slidably connected to the lifting platform (15). The lower end of the first link (16) is hinged to the housing (1). The upper end of the second link (17) is hinged to the lifting platform (15). The lower end of the second link (17) is hinged to the sliding seat (7). An clearance groove (18) is provided on the top of the housing (1).

2. The audible and visual alarm device according to claim 1, characterized in that: The opening (5) is provided with a protective cover. The upper part of the protective cover (19) is hinged to the lifting platform (15) with a first support rod (20), and the lower part of the protective cover (19) is hinged to the sliding seat (7) with a second support rod (21).

3. The audible and visual alarm device according to claim 2, characterized in that: A light strip (22) is fixedly installed on the edge of the protective cover (19).

4. The audible and visual alarm device according to claim 2, characterized in that: The housing (1) is equipped with a backup power supply and a wireless communication controller. The backup power supply, alarm light (2) and speaker (3) are all electrically connected to the wireless communication controller.

5. The audible and visual alarm device according to claim 1, characterized in that: A transceiver antenna (23) is fixedly installed on the lifting platform (15), and the transceiver antenna (23) is electrically connected to the wireless communication controller.

6. The audible and visual alarm device according to claim 1, characterized in that: The alarm light (2) is surrounded by several protective columns (24), the lower end of the protective columns (24) is fixedly connected to the housing (1), and the lifting platform (15) is provided with guide holes (25), which are slidably connected to the protective columns (24).

7. The audible and visual alarm device according to claim 6, characterized in that: A reinforcing ring (26) is fixedly installed at the upper end of several of the protective columns (24), and a cleaning brush (27) for cleaning the surface of the alarm light (2) is fixedly installed on the inner side of the reinforcing ring (26).

8. The audible and visual alarm device according to claim 7, characterized in that: Several protective rings (28) are fixedly installed on the protective column (24). Supporting springs (29) are provided between adjacent protective rings (28), between the protective ring (28) and the reinforcing ring (26), and between the protective ring (28) and the lifting platform (15).

9. The audible and visual alarm device according to claim 1, characterized in that: A return spring (30) is provided between the rotating seat (13) and the sliding seat (7).

Images