An airport terminal building sound system

Abstract

This invention relates to the field of audio structure technology and discloses an airport terminal audio device, including a cabinet with an abutment ring at its bottom edge and an audio unit installed inside. It also includes at least two sets of clamping structures and a deformation monitoring component. The clamping structures are evenly distributed in a ring around the cabinet and collectively fix the cabinet in mounting holes in the ceiling. The deformation monitoring component includes a contact rod, an elastic element, and an alarm component. After the clamping structures fix the cabinet, the end of the contact rod contacts the top plane of the ceiling. The elastic element is configured to provide an initial elastic force towards the ceiling to the contact rod, causing the end of the contact rod to abut against the top plane of the ceiling. This invention allows for long-term, real-time monitoring of ceiling deformation without additional construction, enabling staff to identify in advance which installation points have experienced excessive deformation, facilitating predictive maintenance.

Description

Technical Field

[0001] This invention relates to the field of sound structure technology, specifically to an airport terminal sound system. Background Technology

[0002] The terminal building is a vast space with dense crowds, and passengers need to access information such as flight status, gate changes, and security announcements at any time while moving around. Ceiling-mounted speakers, embedded in the ceiling, provide uniform coverage throughout the entire area and work in conjunction with the public address system to broadcast flight information, emergency announcements, and background music to all areas. They are one of the key infrastructure components for maintaining the orderly operation of the airport.

[0003] Currently, the ceiling-mounted speakers widely used in airport terminals employ a "dog-leg" clamping structure. This structure involves setting L-shaped hanging parts (clamps) and threaded components on the side of the speaker enclosure. During installation, mounting holes are made in the ceiling, the enclosure is inserted into the holes, and the rotating threads drive the clamps to press against the ceiling from above the holes. This, combined with an abutment ring located below the ceiling, secures the speaker.

[0004] While this type of structure is easy to install, it presents the following problems during long-term use in airports: Firstly, ceiling speakers have a certain weight and generate vibrations during operation. These loads are concentrated on the metal ceiling panels around the mounting holes. Long-term loads can cause localized depressions around the mounting holes. Once the deformation exceeds the allowable range, it will not only affect the speaker's directivity and voice clarity, but also reduce the clamping force, increasing the risk of the device loosening or even falling.

[0005] Secondly, while ceiling-mounted speakers on the market offer convenient installation, they cannot provide continuous monitoring of their fixed state. In large-scale deployment locations like airport terminals (where hundreds or thousands of ceiling-mounted speakers may be installed), staff cannot accurately determine which ceiling has experienced excessive deformation. This leads to a delay in problem detection, thus posing certain safety risks. Summary of the Invention

[0006] The purpose of this invention is to provide an airport terminal building audio device that can monitor ceiling deformation in a long-term, real-time manner without additional construction, so that staff can know in advance which installation point of the ceiling has been excessively deformed and thus carry out predictive maintenance.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an airport terminal building audio device, including a cabinet, the bottom edge of the cabinet being provided as an abutment ring, and an audio unit being installed inside the cabinet, and further including at least two sets of clamping structures and a deformation monitoring component, wherein the multiple sets of clamping structures are evenly distributed in a ring around the cabinet and can jointly fix the cabinet in the mounting holes in the ceiling. The deformation monitoring component includes a contact rod, an elastic element, and an alarm component. When the clamping structure fixes the housing, the end of the contact rod contacts the top plane of the ceiling. The elastic element is configured to provide an initial elastic force to the contact rod toward the ceiling, causing the end of the contact rod to abut against the top plane of the ceiling. When the ceiling sinks and deforms, the contact rod is pushed upward by the ceiling. When the compression of the elastic element exceeds the trigger threshold, the alarm component is triggered and an alarm signal is emitted.

[0008] This audio device uses multiple clamping structures to fix the cabinet in the ceiling mounting holes, while simultaneously ensuring that the contact rod of the deformation monitoring component contacts the top plane of the ceiling. Under the elastic force provided by the elastic element, the contact rod is pressed firmly. Thus, when the ceiling deforms due to the weight of the audio device, vibration, or other factors (i.e., the ceiling bulges downward around the mounting holes), the cabinet and clamping structures will also sink accordingly. At the same time, the end of the contact rod will be pushed upwards until the compression of the elastic element exceeds the trigger threshold. In this case, the alarm component is triggered and sends an alarm signal to remind airport staff to maintain the ceiling in that area.

[0009] In this way, by monitoring the ceiling condition in real time through the deformation monitoring component, staff can know in advance which installation point of the ceiling has been excessively deformed, so as to carry out predictive maintenance and avoid the problem being delayed.

[0010] On the other hand, by contacting the ceiling with the touch rod in the area away from the clamping structure, the vibration transmitted to the ceiling by the audio device can also be suppressed to a certain extent. That is, the frictional damping between the touch rod and the ceiling is used to consume the high-frequency micro-vibrations of the ceiling, which can also extend the service life of the ceiling to a certain extent.

[0011] Optionally, the clamping structure includes a rotating cylinder, and the outer wall of the rotating cylinder is provided with a sliding groove. A clamping member is slidably installed on the inner wall of the sliding groove. A screw is also rotatably installed through the axis of the rotating cylinder. The screw passes through the clamping member and is threadedly connected to the through point of the clamping member. The outer wall of the box is provided with a component groove, the bottom of the abutment ring is provided with a through hole communicating with the component groove, the top end of the rotating cylinder is rotatably installed in the inner top of the component groove, the bottom end of the rotating cylinder is rotatably installed in the through hole, and the bottom end of the rotating cylinder extends beyond the bottom plane of the abutment ring.

[0012] Optionally, the elastic element includes a rocker arm, the inner wall of the clamping member has a hidden groove, the rocker arm and the contact rod are rotatably mounted on the inner wall of the hidden groove, and the end of the contact rod extends outside the hidden groove. The outer wall of the contact rod near the rocker arm has an elongated groove, one end of the rocker arm near the contact rod is a C-shaped part, and a pin is fixed to the inner wall of the C-shaped part. The pin passes through the elongated groove. A limit ring is fixed to the outer wall of the contact rod, and a slip ring is slidably mounted on the outer wall of the contact rod near the pin. A spring sleeved on the outer wall of the contact rod is connected between the slip ring and the limit ring.

[0013] Optionally, the alarm component includes insertion holes at the bottom of the rotating cylinder and the bottom of the clamping member. The two insertion holes are coaxially designed and both communicate with the slide groove. A color column is inserted into the insertion hole. The bottom end of the color column is flush with the bottom surface of the rotating cylinder. A cam is set at the rotation point of the swing rod. The cam includes an arc surface and a protrusion. The top end of the color column is inserted into the hidden groove and abuts against the outer wall of the arc surface of the cam.

[0014] Optionally, a sleeve is fixed to the inner bottom surface of the slide, the sleeve and the insertion hole are coaxially designed and have the same inner diameter, and the length of the sleeve is less than the thickness of the ceiling.

[0015] Optionally, the alarm component includes a power connection channel fixed to the bottom of the clamping member, and the power connection channel communicates with the hidden groove. A power connection post is slidably installed on the inner wall of the power connection channel. A retaining ring is fixed on the outer wall of the power connection post that extends into the hidden groove. A compression spring is connected between the retaining ring and the inner bottom of the hidden groove. The rotation point of the swing rod is set as a cam element. The cam element includes an arc surface and a protrusion. The top of the power connection post abuts against the outer wall of the arc surface of the cam element. The alarm component also includes a power supply component installed at the bottom of the chute and a diode installed at the bottom of the rotating cylinder. The power supply component includes two power lines and a power source. One of the power lines is arranged to be connected from the positive and negative terminals of the power source, respectively. One end of each of the two power lines is connected to the two pins of the diode, and the other end is inserted into the power connection channel and forms a connection node on the inner wall of the power connection channel. When the power connection post moves down, it can contact the two connection nodes and achieve electrical connection.

[0016] Optionally, the end of the contact rod is rounded, and the rounded end is wrapped with an elastic damping material.

[0017] Optionally, a limiting groove is provided on the inner top surface of the component groove, and a limiting block is fixedly installed on the outer wall of the rotating cylinder within the limiting groove.

[0018] Optionally, the outer wall of the rotating cylinder extending out of the bottom plane of the abutment ring is provided with anti-slip texture.

[0019] Optionally, the interior of the colored column is the same color as the bottom surface of the rotating cylinder, while the outer wall is coated with a different color than the bottom surface of the rotating cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: I. This invention integrates the deformation monitoring component with the clamping structure, allowing the monitoring component to automatically position and establish elastic contact during speaker installation, achieving "installation and testing immediately." This enables long-term, real-time monitoring of ceiling deformation without additional construction, allowing staff to know in advance which installation point has experienced excessive deformation, enabling predictive maintenance and avoiding delays in problem resolution.

[0021] Second, this invention uses a purely mechanical triggering mechanism consisting of a rocker arm, a contact rod, a spring, and a cam to drive the alarm by utilizing the abrupt change in the spring compression when it exceeds its limit. This achieves the effect of reliably distinguishing between normal vibration and permanent deformation entirely by relying on the mechanical structure, and avoiding false alarms caused by vibration interference from electronic sensors. Attached Figure Description

[0022] Figure 1 The images show a bottom-view perspective view and a partial enlarged view of the clamping component of the present invention in the rotated-out state. Figure 2 This is a bottom perspective view of the clamping component of the present invention in its stored state; Figure 3 This is a schematic diagram of the audio device of the present invention installed on the ceiling; Figure 4 This is a partial cross-sectional view of the clamping structure and deformation monitoring component of the present invention; Figure 5 This is a cross-sectional view of the clamping structure of the present invention; Figure 6 This is an enlarged perspective view of the clamping structure of the present invention; Figure 7 This is an enlarged perspective view of the deformation monitoring component of the present invention; Figure 8 This is a circuit diagram of the alarm component in Embodiment 2 of the present invention.

[0023] In the diagram: 1. Cabinet; 2. Abutment ring; 3. Audio unit; 4. Component groove; 5. Rotating cylinder; 6. Clamping component; 7. Slide groove; 8. Screw; 9. Concealed groove; 10. Rocker arm; 11. Contact rod; 12. Cam component; 13. Protrusion; 14. Long groove; 15. Slip ring; 16. Spring; 17. Limiting ring; 18. Pin; 19. Power connection channel; 20. Power connection post; 21. Compression spring; 22. Power supply component; 23. Diode; 24. Power connection line; 25. Color column; 26. Sleeve; 27. Limiting slide groove; 28. Limiting block; 29. ​​Ceiling; 30. Mounting hole. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 8 The present invention provides a technical solution: an airport terminal building audio device, including a cabinet 1, the bottom edge of the cabinet 1 is set as an abutment ring 2, and an audio unit 3 is installed inside the cabinet 1. It also includes at least two sets of clamping structures and a deformation monitoring component. The multiple sets of clamping structures are evenly distributed in a ring about the cabinet 1 and can jointly fix the cabinet 1 in the mounting hole 30 of the ceiling 29. The deformation monitoring component includes a contact rod 11, an elastic element, and an alarm component. When the clamping structure fixes the housing 1, the end of the contact rod 11 contacts the top plane of the ceiling 29. The elastic element is configured to provide an initial elastic force to the contact rod 11 toward the ceiling 29, and to make the end of the contact rod 11 abut against the top plane of the ceiling 29. When the ceiling 29 sinks and deforms, the contact rod 11 is pushed upward by the ceiling 29. When the compression of the elastic element exceeds the trigger threshold, the alarm component is triggered and an alarm signal is issued.

[0026] During installation, the speaker enclosure 1, clamping structure, and deformation monitoring components are passed through the mounting holes 30 of the ceiling 29, and the abutment ring 2 is brought into contact with the bottom surface of the ceiling 29. Then, multiple sets of clamping components are used to secure the enclosure 1 within the mounting holes 30 of the ceiling 29. Figure 3 As shown; While the clamping structure fixes the housing 1, the end of the contact rod 11 in the deformation monitoring component also contacts the top surface of the ceiling 29, and the elastic force applied by the elastic element presses it onto the top surface of the ceiling 29, thus completing the installation process.

[0027] During subsequent use, when the ceiling 29 sags and deforms due to the weight of the audio device, vibration, and environmental factors (i.e., the ceiling bulges downward around the mounting hole), the cabinet 1 and clamping structure will also sag. At the same time, the end of the contact rod 11 will be pushed upward against the wall until the compression of the elastic element exceeds the trigger threshold. Then, the alarm component will be triggered and an alarm signal will be issued to remind airport staff to maintain the ceiling 29. This will achieve the purpose of real-time monitoring of the ceiling 29's status, enabling predictive maintenance of the ceiling 29 and reducing the risk of the audio device becoming loose or even falling.

[0028] To facilitate the installation and disassembly of housing 1, an improved clamping structure is provided, such as... Figure 4 As shown, the clamping structure includes a rotating cylinder 5, and a groove 7 is provided on the outer wall of the rotating cylinder 5. A clamping member 6 is slidably installed on the inner wall of the groove 7. A screw 8 is also rotatably installed through the axis of the rotating cylinder 5. The screw 8 passes through the clamping member 6 and is threadedly connected to the through point of the clamping member 6. The outer wall of the housing 1 is provided with a component groove 4, and the bottom of the abutment ring 2 is provided with a through hole communicating with the component groove 4. The top end of the rotating cylinder 5 is rotatably installed on the inner top of the component groove 4, and the bottom end of the rotating cylinder 5 is rotatably installed in the through hole, and the bottom end of the rotating cylinder 5 extends beyond the bottom plane of the abutment ring 2.

[0029] First, before installation, the clamping component 6 is housed in the component slot 4 so that the overall clamping structure can pass through the mounting holes 30 of the ceiling 29 along with the housing 1, specifically as follows: Figure 2 As shown, Figure 2 This is a schematic diagram showing the clamping component 6 in its retracted state; Subsequently, after the housing 1 passes through the mounting hole 30, the clamping part 6 is rotated out and unfolded by hand-twisting the bottom end of the rotating cylinder 5. For ease of operation, anti-slip textures can be made on the outer wall of the rotating cylinder 5 extending out to abut the bottom plane of the abutment ring 2, such as... Figure 1 As shown, Figure 1 The clamping component 6 is rotated out. Then, the screw 8 is rotated by a screwdriver (the bottom end of the screw 8 is set with a cross groove that can match the screwdriver). The clamping component 6 can be moved by the thread engagement, and then the clamping ring 2 is used to clamp and fix the ceiling 29. After clamping multiple clamping structures, the installation process of the audio device is completed.

[0030] In this way, by adding the rotating cylinder 5, the storage and display of the clamping parts 6 can be more easily controlled. Moreover, after all the clamping parts 6 are unfolded, the cabinet 1 can be hung in the mounting hole 30, eliminating the need for installers to continuously hold the entire speaker assembly with their hands, making it convenient to change hands and operate tools such as screwdrivers.

[0031] It is worth mentioning that the direction in which the screw 8 rotates and drives the clamping member 6 to rise and fall corresponds to the rotation direction of the rotating cylinder 5. Taking the rotating cylinder 5 driving the clamping member 6 to rotate 90 degrees to unfold as an example, the rotating cylinder 5 rotates 90 degrees clockwise to drive the clamping member 6 to rotate and unfold. At the same time, the clamping member 6 also contacts the inner wall of the component groove 4. At this time, when the screw 8 rotates and drives the clamping member 6 to press down and clamp, the rotation direction of the screw 8 is the same as the rotation direction of the rotating cylinder 5 when it unfolds. In this way, even if there is friction between the screw 8 and the rotating cylinder 5, the rotating cylinder 5 cannot continue to rotate under the restriction of the clamping member 6. This ensures that the screw 8 and the rotating cylinder 5 rotate relative to each other, and the clamping member 6 can also move down and clamp.

[0032] Similarly, when the rotating cylinder 5 rotates 90 degrees counterclockwise to retract the clamping component 6, the screw 8 rotates counterclockwise to move the clamping component 6 upward.

[0033] Thus, during clamping, the clamping component 6 is unfolded by first rotating the rotating cylinder 5, and then the screw 8 is turned to clamp the clamping component 6. During disassembly, the screw 8 needs to be rotated in the opposite direction to release the clamping component 6. Then, the rotating cylinder 5 can be rotated manually or the screw 8 can be rotated further. The friction between the screw 8 and the rotating cylinder 5 will drive the rotating cylinder 5 to rotate together until the rotating cylinder 5 and the clamping component 6 are in the retracted position. Then, the screw 8 can be rotated further to move the clamping component 6 upward. Finally, the housing 1 can be removed from the mounting hole 30 to complete the disassembly process.

[0034] In order to limit the rotation angle of the rotating cylinder 5, a limiting structure is designed between the component groove 4 and the rotating cylinder 5, such as... Figure 1 As shown, a limiting groove 27 is provided on the inner top surface of the component groove 4, and a limiting block 28 is fixed on the outer wall of the rotating cylinder 5 and slidably installed in the limiting groove 27.

[0035] During the clamping process of the clamping member 6, in order to enable the elastic element to simultaneously press the contact rod 11 against the top surface of the ceiling 29, a specific structure of the elastic element is provided, and it is integrated with the clamping member 6, such as... Figure 5 and Figure 7 As shown, the elastic element includes a rocker arm 10. The inner wall of the clamping member 6 is provided with a hidden groove 9. Both the rocker arm 10 and the contact rod 11 are rotatably mounted on the inner wall of the hidden groove 9, and the end of the contact rod 11 extends to the outside of the hidden groove 9. The outer wall of the contact rod 11 near the rocker arm 10 is provided with a long groove 14. One end of the rocker arm 10 near the contact rod 11 is provided with a chamfered part, and a pin 18 is fixed on the inner wall of the chamfered part. The pin 18 passes through the long groove 14. A limit ring 17 is fixed on the outer wall of the contact rod 11. A slip ring 15 is slidably mounted on the outer wall of the contact rod 11 near the pin 18, and a spring 16 sleeved on the outer wall of the contact rod 11 is connected between the slip ring 15 and the limit ring 17.

[0036] First, refer to Figure 5 When not installed, the contact rod 11 will rotate clockwise under the elastic force of the spring 16, that is, the opposite ends of the swing rod 10 and the contact rod 11 will contact the inner top of the hidden groove 9, while the end of the contact rod 11 will be lower than the bottom plane of the clamping member 6.

[0037] Then, as the clamping member 6 presses down with the rotation of the screw 8, the end of the contact rod 11 first contacts the top surface of the ceiling 29, and then rotates counterclockwise under the reaction force of the ceiling 29. At the same time, the spring 16 is also compressed, accumulating elastic potential energy until the clamping member 6 clamps tightly. Figure 4 As shown.

[0038] After installation, the contact rod 11 will apply pressure to the ceiling 29 under the elastic force of the spring 16 to ensure close contact between the two. Moreover, the design of the spring 16 allows the contact rod 11 to maintain contact with the ceiling 29 while allowing it to have a certain amount of undulation space when the vibration of the audio unit 3 is transmitted to the ceiling 29, so as to avoid mismeasurement due to vibration.

[0039] During use, if the ceiling 29 experiences sagging or deformation, refer to... Figure 4 The ceiling 29 will sink around the mounting hole 30, meaning the entire audio device will sink, and a sinking cone will form around the mounting hole 30. This sinking cone will push the end of the contact rod 11 upwards, causing it to rotate counter-clockwise. That is, the contact rod 11 and the swing rod 10 will rotate on the same axis. When the contact rod 11 and the swing rod 10 rotate to the same axis and continue to rotate, the direction of the force exerted by the spring 16 on the contact rod 11 will change abruptly, causing the end of the contact rod 11 to tilt upwards, while the swing rod 10 continues to rotate clockwise. See details [link to documentation]. Figure 4 The two dashed lines in the middle represent the states after the rocker arm 10 and the contact rod 11 have rotated past the same axis.

[0040] Therefore, the trigger threshold of the elastic element is the state when the lever 10 and the contact lever 11 rotate to the same axis (i.e., when the spring 16 is compressed to its shortest length), which also provides the triggering condition for the subsequent alarm component.

[0041] To ensure timely triggering and response of the alarm component, two implementation methods are provided for different situations: one without adding additional electronic components and the other with added electronic components, as detailed below: Example 1 of the alarm component, see details. Figure 4 ; Firstly, the alarm component includes insertion holes at the bottom of the rotating cylinder 5 and the bottom of the clamping member 6. The two insertion holes are coaxially designed and both are connected to the slide groove 7. A color column 25 is inserted into the insertion hole. The bottom end of the color column 25 is flush with the bottom surface of the rotating cylinder 5. The rotation point of the swing rod 10 is set as a cam member 12. The cam member 12 includes an arc surface and a protrusion 13. The top end of the color column 25 is inserted into the hidden groove 9 and abuts against the outer wall of the arc surface of the cam member 12.

[0042] In this embodiment, additional color column 25 needs to be prepared. During installation, after the clamping member 6 and the abutment ring 2 clamp the ceiling 29, the color column 25 is inserted into the insertion hole at the bottom of the rotating cylinder 5 until its top end is inserted into the insertion hole of the clamping member 6 and abuts against the outer wall of the arc surface of the cam member 12. Then the color column 25 is cut off flush with the plane of the rotating cylinder 5. This allows the color column 25 to be cut according to different ceiling 29 thicknesses, making it more applicable.

[0043] It is worth mentioning that the interior of the color column 25 is the same color as the bottom surface of the rotating cylinder 5, while the outer wall is painted with a different color than the bottom surface of the rotating cylinder 5. This way, when the color column 25 is cut off, it will not be visible when viewed from below. The outer wall of the color column 25 is preferably a bright red or black, because the abutment ring 2 of a general audio device or the magnetic mesh under the audio unit 3 is mostly white. Therefore, using black or red for the outer wall of the color column 25 makes it easier to distinguish and identify.

[0044] Then, when the swing arm 10 rotates with the contact rod 11, the outer wall of the arc surface of the cam component 12 will contact and rub against the top of the color column 25. When the swing arm 10 rotates beyond the aforementioned trigger threshold, the swing arm 10 will continue to rotate and make the protrusion 13 of the cam component 12 contact the top of the color column 25, thereby pushing the color column 25 downward and exposing the colored outer wall of the color column 25 from the rotating cylinder 5. In this way, airport maintenance personnel can discover it during regular patrols, thus achieving a warning effect.

[0045] This alarm system primarily uses mechanical structures and does not require additional electronic components (such as sensors). This not only reduces component complexity and costs, especially in airports where a large number of audio devices are used, but also reduces failure rates and subsequent maintenance costs.

[0046] In order to guide the color column 25, a sleeve 26 is fixed on the inner bottom surface of the slide 7. The sleeve 26 is coaxial with the insertion hole and has the same inner diameter. The length of the sleeve 26 is less than the thickness of the ceiling 29. In this way, part of the color column 25 will be inserted into the sleeve 26. At the same time, it can also prevent the color column 25 from breaking in the middle when it moves down after a long period of use.

[0047] Example 2 of the alarm component can be found in [link / reference]. Figure 5 , Figure 6 and Figure 8 The difference between this embodiment and embodiment one is the introduction of electronic components. Because the color bar 25 may not be very conspicuous in some dimly lit environments, this embodiment uses a warning light to provide an alarm, as detailed below. In this embodiment, the alarm component includes a power connection channel 19 fixed to the bottom of the clamping member 6, and the power connection channel 19 is connected to the hidden groove 9. A power connection post 20 is slidably installed on the inner wall of the power connection channel 19. A retaining ring is fixed on the outer wall of the power connection post 20 that extends into the hidden groove 9. A compression spring 21 is connected between the retaining ring and the inner bottom of the hidden groove 9. The rotation point of the swing rod 10 is set as a cam member 12. The cam member 12 includes an arc surface and a protrusion 13. The top end of the power connection post 20 abuts against the outer wall of the arc surface of the cam member 12. The alarm assembly also includes a power supply assembly 22 installed at the bottom of the slide 7 and a diode 23 installed at the bottom of the rotating cylinder 5. The power supply assembly 22 includes two power lines 24 and a power source. One of the power lines 24 is arranged to be connected from the positive and negative terminals of the power source respectively. One end of each of the two power lines 24 is connected to the two pins of the diode 23 respectively, and the other end is inserted into the power connection channel 19 and forms a connection node on the inner wall of the power connection channel 19. When the power connection post 20 moves down, it can contact the two connection nodes and realize electrical connection.

[0048] First, similar to the trigger threshold in Embodiment 1, the trigger is initiated when the lever 10 crosses the same axis as the contact lever 11. The difference is that when the lever 10 rotates beyond the trigger threshold, the continued rotation of the lever 10 will cause the protrusion 13 of the cam 12 to contact the electrical terminal 20 and press the electrical terminal 20 downward, causing it to move down and contact the two connection nodes, thus achieving an electrical connection between the two connection nodes. This allows the power supply component 22, the power line 24, the electrical terminal 20, and the diode 23 to form a power circuit, thereby achieving a warning effect by illuminating the diode 23. Compared to the alarm form of the color bar 25, this is more conspicuous and can further improve the warning effect.

[0049] The power supply can be a miniature button battery. By observing whether the diode 23 is lit, it can be determined whether the ceiling 29 needs maintenance. Moreover, the overall circuit structure cost is low, and the failure rate is also lower compared to sensors.

[0050] In Example 3, if intelligent control or unified monitoring is required, a pressure sensor can be directly installed at the bottom of the hidden slot 9. When the swing arm 10 rotates beyond the trigger threshold, its end will contact the pressure sensor. Then, the pressure sensor transmits the signal to the control center via an electrical signal to trigger an alarm. This alarm method is more suitable for a small number of audio components, so the specific structure is not shown in this example.

[0051] In order to improve the vibration suppression effect of the contact rod 11 on the ceiling 29 and reduce the noise generated by the contact rod 11 contacting the ceiling 29, the end of the contact rod 11 can be rounded, and the rounded end can be wrapped with elastic damping material, such as elastic sound-absorbing cotton, which can also avoid generating unnecessary noise.

[0052] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airport terminal building audio device, comprising a housing (1), wherein the bottom edge of the housing (1) is provided as an abutment ring (2), and an audio unit (3) is installed inside the housing (1), characterized in that, Also includes: At least two sets of clamping structures, and multiple sets of clamping structures are evenly distributed in a ring about the box (1), and can jointly fix the box (1) in the mounting hole (30) of the ceiling (29); Deformation monitoring component, the deformation monitoring component includes: When the clamping structure fixes the box (1), the end of the contact rod (11) contacts the top plane of the ceiling (29); An elastic element is configured to provide an initial elastic force to the touch rod (11) toward the ceiling (29) and to cause the end of the touch rod (11) to abut against the top plane of the ceiling (29); When the ceiling (29) sinks and deforms, the touch rod (11) is pushed upward by the ceiling (29). When the compression of the elastic element exceeds the trigger threshold, the alarm component is triggered and an alarm signal is issued.

2. The airport terminal building audio system according to claim 1, characterized in that: The clamping structure includes a rotating cylinder (5), and the outer wall of the rotating cylinder (5) is provided with a sliding groove (7). A clamping member (6) is slidably installed on the inner wall of the sliding groove (7). A screw (8) is also rotatably installed through the axis of the rotating cylinder (5). The screw (8) passes through the clamping member (6) and is threadedly connected to the through point of the clamping member (6). The outer wall of the box (1) is provided with a component groove (4), the bottom of the abutment ring (2) is provided with a through hole communicating with the component groove (4), the top of the rotating cylinder (5) is rotatably installed in the inner top of the component groove (4), the bottom of the rotating cylinder (5) is rotatably installed in the through hole, and the bottom of the rotating cylinder (5) extends beyond the bottom plane of the abutment ring (2).

3. The airport terminal building audio system according to claim 2, characterized in that: The elastic element includes a rocker arm (10), and the inner wall of the clamping member (6) is provided with a hidden groove (9). The rocker arm (10) and the contact rod (11) are rotatably mounted on the inner wall of the hidden groove (9), and the end of the contact rod (11) extends to the outside of the hidden groove (9). The outer wall of the contact rod (11) near the rocker arm (10) is provided with a long groove (14). One end of the rocker arm (10) near the contact rod (11) is provided with a U-shaped part, and a pin (18) is fixed on the inner wall of the U-shaped part. The pin (18) passes through the long groove (14). A limit ring (17) is fixed on the outer wall of the contact rod (11). A slip ring (15) is slidably mounted on the outer wall of the contact rod (11) near the pin (18), and a spring (16) sleeved on the outer wall of the contact rod (11) is connected between the slip ring (15) and the limit ring (17).

4. The airport terminal building audio system according to claim 3, characterized in that: The alarm component includes insertion holes at the bottom of the rotating cylinder (5) and the bottom of the clamping member (6). The two insertion holes are coaxially designed and both are connected to the slide groove (7). A color column (25) is inserted into the insertion hole. The bottom end of the color column (25) is flush with the bottom surface of the rotating cylinder (5). The rotation point of the swing rod (10) is set as a cam (12). The cam (12) includes an arc surface and a protrusion (13). The top end of the color column (25) is inserted into the hidden groove (9) and abuts against the outer wall of the arc surface of the cam (12).

5. The airport terminal building audio system according to claim 4, characterized in that: A sleeve (26) is fixed to the inner bottom surface of the slide (7). The sleeve (26) is coaxial with the insertion hole and has the same inner diameter. The length of the sleeve (26) is less than the thickness of the ceiling (29).

6. The airport terminal building audio system according to claim 3, characterized in that: The alarm component includes a power connection channel (19) fixed to the bottom of the clamping member (6), and the power connection channel (19) is connected to the hidden groove (9). A power connection post (20) is slidably installed on the inner wall of the power connection channel (19). A retaining ring is fixed on the outer wall of the power connection post (20) extending into the hidden groove (9), and a compression spring (21) is connected between the retaining ring and the inner bottom of the hidden groove (9). The rotation point of the swing rod (10) is set as a cam member (12). The cam member (12) includes an arc surface and a protrusion (13). The top of the power connection post (20) abuts against the outer wall of the arc surface of the cam member (12). The alarm component also includes a power supply component (22) installed at the bottom of the slide (7) and a diode (23) installed at the bottom of the rotating cylinder (5). The power supply component (22) includes two power lines (24) and a power source. One of the power lines (24) is arranged to be connected from the positive and negative terminals of the power source respectively. One end of each of the two power lines (24) is connected to the two pins of the diode (23) respectively, and the other end is inserted into the power connection channel (19) and forms a connection node on the inner wall of the power connection channel (19). When the power connection post (20) moves down, it can contact the two connection nodes and realize electrical connection.

7. The airport terminal sound system according to any one of claims 1-6, characterized in that: The end of the contact rod (11) is rounded, and the rounded end is wrapped with elastic damping material.

8. The airport terminal building audio system according to claim 2, characterized in that: The inner top surface of the component groove (4) is provided with a limiting groove (27), and the outer wall of the rotating cylinder (5) is fixed with a limiting block (28) that is slidably installed in the limiting groove (27).

9. The airport terminal building audio system according to claim 2, characterized in that: The outer wall of the rotating cylinder (5) extending out of the bottom plane of the abutment ring (2) is provided with anti-slip texture.

10. The airport terminal building audio system according to claim 4, characterized in that: The interior of the colored column (25) is the same color as the bottom surface of the rotating cylinder (5), while the outer wall is coated with a different color than the bottom surface of the rotating cylinder (5).

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