Alarm with obstacle detection function

Abstract

The application relates to the technical field of alarm devices, and particularly relates to an alarm device with an obstacle detection function, which comprises a mounting seat, an obstacle sensor, a cover shell and an alarm sensor. The obstacle sensor is mounted on the mounting seat. An airflow channel is formed between the cover shell and the mounting seat, and the airflow channel is in the detection area of the obstacle sensor. The alarm sensor is mounted on the cover shell and is arranged in the detection area of the obstacle sensor. The airflow channel provides a channel for the matter triggering the alarm sensor to reach the alarm sensor. In this way, the obstacle sensor and the alarm sensor are respectively mounted on the mounting seat and the cover shell, the alarm sensor and the airflow channel are arranged in the detection area of the obstacle sensor, the blind area of the obstacle sensor for detecting the environment obstacles of the alarm sensor is eliminated, the obstacle sensor can comprehensively monitor the environment obstacles of the alarm sensor, and the reliability of the alarm device is improved.

Description

Technical Field

[0001] This application relates to the field of alarm technology, and in particular to an alarm with obstacle detection function. Background Technology

[0002] Fire alarms prevent fires by monitoring smoke concentration. Internally, they employ either ionization smoke sensors or photoelectric sensors. Ionization alarms use a sensor containing radioactive material that generates an electric current. When smoke particles enter the sensor, they disrupt this current, triggering the alarm. Photoelectric alarms emit infrared beams. When smoke particles are present indoors, the beam is scattered onto the sensor, which then detects a certain amount of the beam and sounds an alarm.

[0003] As can be seen from the working principle of the alarm, one of the conditions for the alarm to reliably detect smoke is that smoke particles can reach the alarm sensor smoothly and without obstruction, so that the alarm sensor can effectively monitor the smoke concentration in the surrounding environment.

[0004] However, factors such as debris accumulation near the alarm sensor and small organisms like mosquitoes blocking the airflow channel of the alarm prevent airflow from entering the alarm, making it impossible for the alarm sensor inside the alarm to accurately or quickly detect the smoke concentration in the surrounding environment.

[0005] Therefore, it is necessary to check whether there are any obstacles near the alarm and in the airflow channel of the alarm that prevent airflow from entering the alarm.

[0006] In existing technologies, alarm sensors and obstacle detection sensors are installed in the same mounting structure. This results in blind spots when the obstacle detection sensor monitors obstacles in the environment where the alarm sensor is located. Consequently, it cannot fully determine whether there are obstacles in the environment where the alarm sensor is located, posing a significant safety hazard to the reliable operation of the alarm sensor.

[0007] Therefore, the technical problem to be solved by this application is how to eliminate the blind spots of obstacle sensors in the environment where alarm sensors are located, and thus comprehensively monitor obstacles in the environment where alarm sensors are located. Summary of the Invention

[0008] This application provides an alarm with obstacle detection function, which aims to solve the technical problem of how to eliminate the blind spot of obstacle sensor detection of the environment where the alarm sensor is located, and thus comprehensively monitor obstacles in the environment where the alarm sensor is located.

[0009] This application provides an alarm device with obstacle detection function, comprising: Mounting base; An obstacle sensor, which is mounted on a mounting base; Cover shell; and An alarm sensor is installed on the cover housing; An airflow channel is formed between the cover housing and the mounting base to allow the detected object to reach the alarm sensor. Both the airflow channel and the alarm sensor are located within the detection area of ​​the obstacle sensor.

[0010] Furthermore, a reflector is provided on the side of the cover shell near the mounting base, and the reflector is cone-shaped; The tip of the reflector is directed toward the obstacle sensor and aligned with the center of the obstacle sensor.

[0011] Furthermore, the obstacle sensor is an ultrasonic sensor.

[0012] Furthermore, the cover housing is provided with at least one support foot, and the cover housing is detachably mounted to the mounting base via the support foot.

[0013] Furthermore, the end of the support leg is provided with a plug, the plug is provided with a limiting hole, the mounting base is provided with a insertion hole, and the mounting base is provided with a limiting component; The plug is adapted to the socket, and the limiting member is adapted to the limiting hole; When the plug is inserted into the socket, the limiting member is inserted into the limiting hole.

[0014] Furthermore, the number of support feet is four, and each support foot is provided with a plug at a corresponding position. The position and number of the plug holes are adapted to the position and number of the support feet.

[0015] Furthermore, the end of the limiting member is provided with a wedge-shaped inclined surface. After the plug contacts the limiting member, it pushes the limiting member through the wedge-shaped inclined surface. The limiting member abuts against the plug through a spring.

[0016] Furthermore, the cover housing is provided with a first port, and the mounting base is provided with a second port, the first port and the second port being adapted to each other; The circuitry within the cover housing and the circuitry within the mounting base are electrically connected via the first port and the second port.

[0017] Furthermore, the cover housing is provided with at least one support foot, the first port is located at the support foot, and the position of the second port corresponds to the position of the first port.

[0018] Furthermore, the cover shell has an inclined surface extending from the edge to the center on the side near the airflow channel, and the inclined surface is provided with a grille, the grille bars of which are stacked sequentially in the direction pointing towards the end face of the cover shell.

[0019] The beneficial effects achieved by this invention are: This application discloses an alarm with obstacle detection function, comprising a mounting base, an obstacle sensor, a cover housing, and an alarm sensor. The obstacle sensor is mounted on the mounting base. An airflow channel is formed between the cover housing and the mounting base, and the airflow channel is within the detection area of ​​the obstacle sensor. The alarm sensor is mounted on the cover housing and is located within the detection area of ​​the obstacle sensor. The airflow channel provides a pathway for substances that trigger the alarm sensor to reach it. By mounting the obstacle sensor and the alarm sensor on the mounting base and the cover housing respectively, both the alarm sensor and the airflow channel are located within the detection area of ​​the obstacle sensor, thereby eliminating the blind spot of the obstacle sensor in detecting obstacles in the environment where the alarm sensor is located. This allows the obstacle sensor to comprehensively monitor obstacles in the environment where the alarm sensor is located, improving the reliability of the alarm's operation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an alarm device with obstacle detection function provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of an alarm device with obstacle detection function provided in an embodiment of the present invention; Figure 3 This is an exploded structural diagram of an alarm device with obstacle detection function provided in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the cover housing of the alarm device with obstacle detection function provided in the embodiment of the present invention, viewed from the side. Figure 5 This is a schematic diagram of the structure of the alarm device with obstacle detection function according to an embodiment of the present invention, viewed from the end face of the cover housing. Figure 6 This is a three-dimensional structural diagram of the mounting base and hanging plate in the alarm with obstacle detection function according to an embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the mounting plate in the alarm device with obstacle detection function according to an embodiment of the present invention; Figure 8 This is a partial internal structure diagram of the mounting base in the alarm with obstacle detection function provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structural relationship between the limit component and the plug-in in the alarm with obstacle detection function proposed in the embodiment of the present invention.

[0021] Explanation of key component symbols: 10. Alarm device; 11. Mounting base; 111. Second port; 112. First locking block; 113. Insertion hole; 114. Limiting component; 115. Wedge-shaped inclined surface; 116. Spring; 12. Obstacle sensor; 13. Cover housing; 131. Reflector; 132. Support foot; 133. First port; 134. Grille; 135. Grille strip; 136. Insert; 137. Limiting hole; 14. Airflow channel; 15. Alarm sensor; 16. Mounting plate; 161. Mounting hole; 162. Scale; 163. Slot; 164. Second locking block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Furthermore, it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0023] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "left", and "right" are used interchangeably. The orientation or positional relationship indicated by terms such as "horizontal," "top," and "bottom" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] In some embodiments of this application, an alarm 10 with obstacle detection function includes a mounting base 11, an obstacle sensor 12, a cover housing 13, and an alarm sensor 15. The obstacle sensor 12 is mounted on the mounting base 11. An airflow channel 14 is formed between the cover housing 13 and the mounting base 11, and the airflow channel 14 is within the detection area of ​​the obstacle sensor 12. The alarm sensor 15 is mounted on the cover housing 13, and the alarm sensor 15 is located within the detection area of ​​the obstacle sensor 12. The airflow channel 14 provides a pathway for substances that trigger the alarm sensor 15 to reach the alarm sensor 15. Thus, by mounting the obstacle sensor 12 and the alarm sensor 15 on the mounting base 11 and the cover housing 13 respectively, both the alarm sensor 15 and the airflow channel 14 are located within the detection area of ​​the obstacle sensor 12, thereby eliminating blind spots in the obstacle detection of the environment where the alarm sensor 15 is located. This allows the obstacle sensor 12 to comprehensively monitor obstacles in the environment where the alarm sensor 15 is located, improving the reliability of the alarm 10.

[0029] Example 1 Please see Figures 1 to 3 In some embodiments of this application, an alarm 10 with obstacle detection function includes a mounting base 11, an obstacle sensor 12, a cover housing 13, and an alarm sensor 15. The obstacle sensor 12 is mounted on the mounting base 11. An airflow channel 14 is formed between the cover housing 13 and the mounting base 11, and the airflow channel 14 is within the detection area of ​​the obstacle sensor 12. The alarm sensor 15 is mounted on the cover housing 13 and is located within the detection area of ​​the obstacle sensor 12. The airflow channel 14 provides a pathway for substances that trigger the alarm sensor 15 to reach the alarm sensor 15.

[0030] Thus, by installing the obstacle sensor 12 and the alarm sensor 15 on the mounting base 11 and the cover housing 13 respectively, both the alarm sensor 15 and the airflow channel 14 are located within the detection area of ​​the obstacle sensor 12, thereby eliminating the blind spot of the obstacle sensor 12 in detecting obstacles in the environment where the alarm sensor 15 is located. This allows the obstacle sensor 12 to comprehensively monitor obstacles in the environment where the alarm sensor 15 is located, improving the reliability of the alarm 10.

[0031] It is understood that, in the embodiments of this application, after the alarm 10 is installed in the working position, airflow enters the cover housing 13 through the airflow channel 14 and then reaches the alarm sensor 15, which detects the concentration of smoke particles in the airflow. Throughout the operation of the alarm 10, airflow continuously enters the cover housing 13 through the airflow channel 14 and reaches the alarm sensor 15, thereby enabling the alarm sensor 15 to monitor the concentration of the target substance in the environment where the alarm 10 is located in real time. When the alarm sensor 15 detects that the concentration of the target substance exceeds the warning value, it triggers an audible and visual alarm or transmits a wireless signal to a remote location to indicate a possible related accident.

[0032] When there is an obstruction in the airflow channel 14, it will hinder the airflow into the cover housing 13, reducing or preventing the airflow from entering the cover housing 13. In such cases, the concentration of the target substance detected by the alarm sensor 15 will be too low, or even the target substance may not be detected at all. This will reduce the sensitivity of the alarm 10 in detecting the target substance, resulting in the alarm 10 failing to provide timely warnings and increasing the safety hazards in the environment where the alarm 10 is located.

[0033] Similarly, when there are obstacles near the alarm 10, the airflow reaching the alarm 10 will be reduced, or the airflow on the side of the obstacle away from the alarm 10 may not be able to reach the alarm 10 smoothly. As a result, the alarm sensor 15 cannot accurately collect airflow information near the alarm 10, and therefore cannot reliably monitor the concentration of the target substance near the alarm 10.

[0034] Please see Figures 1 to 2 In the embodiments of this application, an obstacle sensor 12 is mounted on a mounting base 11, an alarm sensor 15 is mounted on a cover housing 13, and an airflow channel 14 is formed between the cover housing 13 and the mounting base 11. The obstacle sensor 12 monitors obstacles in the space area on the side of the cover housing 13 of the mounting base 11, thus ensuring that both the airflow channel 14 and the alarm sensor 15 are within the monitoring range of the obstacle sensor 12. This eliminates blind spots in the monitoring of the obstacle sensor 12, enabling it to comprehensively monitor obstacles at the alarm 10.

[0035] When an obstacle is present in the airflow channel 14 or near the alarm 10, it can be detected by the obstacle sensor 12. Once the obstacle sensor 12 detects an obstacle, the alarm 10 will sound an alarm to indicate the presence of the obstacle, allowing staff to clear it in a timely manner and thus eliminate the safety hazard.

[0036] Specifically, the alarm 10 can be a smoke alarm, a hazardous gas alarm, or a heat alarm, etc. When the alarm 10 is a smoke alarm, the detected target is smoke; when the alarm 10 is a hazardous gas alarm, the detected target is hazardous gas; when the alarm 10 is a heat alarm, the detected target is high-temperature airflow.

[0037] The obstacle sensor 12 can be a photoelectric sensor or an ultrasonic sensor. The obstacle sensor 12 emits a sensing signal into the space area near the cover housing 13 of the mounting base 11. When the sensing signal touches an obstacle, it is reflected back to the obstacle sensor 12, thereby enabling the obstacle sensor 12 to detect the presence of the obstacle.

[0038] In one application scenario of this application, the alarm 10 is hung on the ceiling of an indoor room, with the mounting base 11 close to the ceiling and the cover housing 13 located on the side of the mounting base 11 facing away from the ceiling. The obstacle sensor 12 is mounted on the mounting base 11, and the alarm sensor 15 is mounted on the cover housing 13. An airflow channel 14 is formed between the cover housing 13 and the mounting base 11.

[0039] When there is an obstruction in the airflow channel 14, it will hinder the airflow into the cover housing 13, preventing the interaction between the ambient air around the alarm and the airflow channel 14, thereby affecting the alarm sensor 15's monitoring of smoke concentration.

[0040] Obstacle sensor 12 emits a sensing signal toward the cover housing 13. The sensing signal emitted by obstacle sensor 12 is reflected by the obstacle. Obstacle sensor 12 receives the reflected sensing signal, thereby amplifying the intensity of the received reflected sensing signal. When the received reflected sensing signal is enhanced, it can be determined that there is an obstacle in the airflow channel 14. Alarm 10 then sounds an alarm to indicate the presence of the obstacle, prompting personnel to clear the obstacle in the airflow channel 14, thereby restoring the airflow channel 14 to an unobstructed state.

[0041] In another application scenario of the embodiments of this application, the alarm 10 is installed on an indoor wall, with a mounting bracket. Mount 11 is located near the wall, while the cover housing 13 is located on the side facing away from the wall. Obstacle sensor 12 is mounted on mount 11, and alarm sensor... 15 is installed on the cover housing 13, and an airflow channel 14 is formed between the cover housing 13 and the mounting base 11.

[0042] When there are debris piled up near the alarm 10, the debris will obstruct the airflow to the alarm 10, preventing the airflow carrying smoke from reaching the alarm 10 smoothly, and even preventing the alarm sensor 15 from detecting the smoke in the environment where the alarm 10 is located.

[0043] Obstacle sensor 12 emits a sensing signal towards the side facing away from the wall. This signal is reflected by debris, and the obstacle sensor 12 receives the reflected signal, thus amplifying the intensity of the received signal. When the received reflected signal is stronger, it indicates the presence of an obstacle near alarm 10. Alarm 10 then sounds an alarm to alert staff to the presence of the obstacle, allowing them to clear debris from the vicinity and ensure unobstructed airflow in the area.

[0044] It should be noted that when the alarm 10 is installed, the mounting base 11 is always located on the side of the mounting surface, that is, the mounting base 11 is relatively close to the mounting surface, and the cover housing 13 is relatively far from the mounting surface.

[0045] The obstacle sensor 12 emits a sensing signal toward the cover housing 13. Therefore, the space area on the side of the mounting base 11 away from the mounting surface is within the monitoring range of the obstacle sensor 12. That is, the airflow channel 14, the cover housing 13, and the alarm sensor 15 are all within the monitoring range of the obstacle sensor 12.

[0046] In this way, the airflow channel 14, the cover housing 13, and the alarm sensor 15 are placed within the monitoring range of the obstacle sensor 12, eliminating the blind spot of the obstacle sensor 12 obstructing the alarm sensor 15, and enabling the obstacle sensor to... 12 can comprehensively monitor obstacles in the environment where the alarm sensor 15 is located, thereby improving the reliability of the alarm 10.

[0047] Example 2 Please see Figure 2 In some embodiments of this application, a reflector 131 is provided on the side of the cover housing 13 near the mounting base 11, and the reflector 131 is conical; The tip of the reflector 131 faces the obstacle sensor 12 and is aligned with the center of the obstacle sensor 12.

[0048] The reflector 131 has the shape of a cone with a straight or curved edge in its longitudinal section.

[0049] The signal emitted by obstacle sensor 12 is diffused to the space where alarm 10 is located via reflector 131.

[0050] In the embodiments of this application, the reflector 131 reflects the sensing signal emitted by the obstacle sensor 12 and diffuses the sensing signal into the space near the alarm 10. During the diffusion of the sensing signal, it passes through the airflow channel 14.

[0051] In this way, the blind spot of obstacle sensor 12 in detecting obstacles in the environment where alarm sensor 15 is located is eliminated, enabling obstacle sensor 12 to comprehensively monitor obstacles in the environment where alarm sensor 15 is located, thereby improving the reliability of alarm device 10.

[0052] Specifically, the obstacle sensor 12 emits a sensing signal, which can be a light beam, an ultrasonic wave, or an electromagnetic wave, depending on the type of obstacle sensor 12.

[0053] Please see Figures 1 to 2 It is understood that in the embodiments of this application, the obstacle sensor 12 emits a sensing signal, which is reflected by the reflector 131 after reaching it. Since the reflector 131 is conical in shape, the sensing signal is diffused by the reflective surface of the reflector 131 into the space where the alarm 10 is located. Because the reflector 131 is located on the side of the cover housing 13 near the mounting base 11, when the sensing signal is diffused by the reflector 131, the signal passes through the airflow channel 14 formed between the cover housing 13 and the mounting base 11, and diffuses into the vicinity of the alarm 10.

[0054] When the sensing signal diffuses into the space near the alarm 10 through the airflow channel 14, if there is an obstacle in the airflow channel 14 or near the alarm 10, the sensing signal will be reflected by the obstacle. The part of the sensing signal reflected by the obstacle will be received by the obstacle sensor 12, thereby increasing the intensity of the reflected sensing signal received by the obstacle sensor 12. When the received reflected sensing signal is enhanced, the presence of the obstacle can be detected.

[0055] In this way, it can be determined that there is an obstacle near the alarm device 10 or in the airflow channel 14. The alarm device 10 will then sound an alarm to indicate the presence of the obstacle, allowing staff to clear it, thereby ensuring the safety of the area near the alarm device 10 and in the airflow channel. The smooth airflow of 14 improves the reliability of the alarm 10.

[0056] Example 3 Please see Figure 2 In some embodiments of this application, obstacle sensor 12 is an ultrasonic sensor.

[0057] Understandably, ultrasonic waves are highly directional and can travel long distances in a medium. When an ultrasonic wave encounters an obstacle, it is reflected by the obstacle and returns to the obstacle sensor 12. The obstacle sensor 12 detects the presence of the obstacle by receiving the reflected ultrasonic waves.

[0058] Thus, by transmitting and receiving ultrasonic waves, the environment surrounding the alarm 10 and obstacles in the airflow channel 14 are monitored. When an obstacle is detected near the alarm 10 or in the airflow channel 14, the alarm 10 sounds an alarm to indicate its presence, allowing personnel to clear it and ensuring the safety of the area around the alarm 10 and the airflow channel. The airflow is unobstructed at location 14.

[0059] Specifically, the obstacle sensor 12 includes a transmitter and a receiver. The transmitter of the obstacle sensor 12 emits ultrasonic waves. After the ultrasonic waves encounter an obstacle, they are reflected and received by the receiver of the obstacle sensor 12, thereby increasing the intensity of the reflected sensing signal received by the obstacle sensor 12. When the received reflected sensing signal is enhanced, the presence of the obstacle can be detected.

[0060] Thus, the obstacle sensor 12 monitors the environment where the alarm 10 is located and the obstacles in the airflow channel 14.

[0061] Example 4 Please see Figure 1 as well as Figures 3 to 4 In some embodiments of this application, the cover housing 13 is provided with at least one support foot 132, and the cover housing 13 is detachably mounted to the mounting base 11 via the support foot 132.

[0062] It is understood that in the embodiments of this application, the cover housing 13 is mounted on the mounting base 11 via support feet 132, and an airflow channel 14 for airflow is formed between the cover housing 13 and the mounting base 11. When an obstruction is detected at the airflow channel 14, the alarm 10 issues an alarm indicating the presence of the obstruction, prompting personnel to clear the obstruction. During the process of clearing the obstruction, if personnel find an obstruction inside the alarm 10, they can remove the cover housing 13 from the mounting base 11 to facilitate the removal of the obstruction; if personnel find an obstruction near the alarm 10, they can directly remove the obstruction near the alarm.

[0063] Thus, when clearing obstacles in the airflow channel 14, the cover shell 13 is removed, making the airflow channel 14 an open space, which makes the obstacle clearing process more convenient, faster, and more effective.

[0064] In one embodiment of this application, specifically, when the cover housing 13 is provided with a support foot 132, the support foot 132 is located at the edge of the cover housing 13, and a snap-fit ​​structure is formed at the end of the support foot 132. A corresponding snap-fit ​​groove adapted to the snap-fit ​​structure of the support foot 132 is also provided at the corresponding position of the mounting base 11. When the cover housing 13 is installed on the mounting base 11, the snap-fit ​​structure of the support foot 132 is inserted into the snap-fit ​​groove of the mounting base 11, making the cover housing 13 and the mounting base 11 relatively fixed. Supported by the support foot 132, an airflow channel 14 is formed between the cover housing 13 and the mounting base 11, allowing airflow to pass through. The airflow near the alarm 10 enters the cover housing 13 through the airflow channel 14 and is then detected by the alarm sensor 15, which monitors the smoke concentration in the airflow.

[0065] Since the cover shell 13 is connected to the mounting base 11 via a support foot 132, the portion of the cover shell 13 other than the support foot 132 is suspended in the air. This provides ample space for airflow through the airflow channel 14, facilitating smooth airflow. Furthermore, the large space between the cover shell 13 and the mounting base 11 minimizes obstruction during the clearing of obstacles from the airflow channel 14, making it easier for workers to clear obstacles. Where possible, the cover shell 13 can be removed from the mounting base 11 during obstacle clearing.

[0066] In one embodiment of this application, the cover housing 13 is specifically provided with two or more support feet 132, which are evenly arranged on the edge of the cover housing 13. A snap-fit ​​structure is formed at the end of each support foot 132, and a corresponding snap-fit ​​groove adapted to the snap-fit ​​structure of the support foot 132 is also provided on the mounting base 11. When the cover housing 13 is installed on the mounting base 11, the snap-fit ​​structure of the support foot 132 is inserted into the snap-fit ​​groove of the mounting base 11, making the cover housing 13 and the mounting base 11 relatively fixed. Supported by the support feet 132, an airflow channel 14 is formed between the cover housing 13 and the mounting base 11, allowing airflow to pass through. Airflow near the alarm 10 enters the cover housing 13 through the airflow channel 14 and is then detected by the alarm sensor 15, which monitors the smoke concentration in the airflow.

[0067] Multiple support feet 132 support the cover housing 13, making the connection between the cover housing 13 and the mounting base 11 more stable and effectively reducing the possibility of relative shaking between the cover housing 13 and the mounting base 11. Since the sensing signal emitted by the obstacle sensor 12 is diffused to the spatial area near the alarm 10 through the reflector 131 at the cover housing 13, the cover housing 13 is firmly installed at the mounting base 11, which can effectively ensure the reliability of obstacle sensor 12 in detecting obstacles.

[0068] Example 5 Please see Figures 8 to 9 The support foot 132 has an insert 136 at its end, and the insert 136 has a limiting hole 137. The mounting base 11 has an insertion hole 113, and a limiting member 114 is provided inside the mounting base 11. The insert 136 is adapted to the insertion hole 113, and the limiting member 114 is adapted to the limiting hole 137. When the insert 136 is inserted into the insertion hole 113, the limiting member 114 is inserted into the limiting hole 137. There are four support feet 132, and each support foot 132 has a corresponding position with an insert 136. The position and number of insertion holes 113 are adapted to the position and number of support feet 132. The end of the limiting member 114 has a wedge-shaped inclined surface 115, and the insert 136 contacts the limiting member. After 114, the wedge-shaped inclined surface 115 pushes the limiting member 114, and the limiting member 114 abuts against the plug 136 through the spring 116.

[0069] When the cover housing 13 is installed on the mounting base 11, the insert 136 is inserted into the insertion hole 113. After the insert 136 contacts the limiting member 114, the insert 136 continues to extend into the insertion hole 113. At this time, the insert 136 pushes the limiting member 114 through the wedge-shaped inclined surface 115 at the end of the limiting member 114. The insert 136 continues to extend into the insertion hole 113 until the limiting hole 137 reaches the limiting member 114. During this process, the limiting member 114 abuts against the insert 136 through the spring 116. When the limiting hole 137 reaches the limiting member 114, the limiting member 114 is inserted into the limiting hole 137 under the action of the spring 116.

[0070] Thus, by inserting the plug 136 into the socket 113 and the limiting member 114 into the limiting hole 137, the cover housing 13 is stably installed at the mounting base 11.

[0071] The cover housing 13 is connected to the mounting base 11 by four support feet 132, which makes the installation structure more stable. With the support of the four support feet 132, the airflow channel 14 between the cover housing 13 and the mounting base 11 is more unobstructed, so that airflow can enter the alarm 10 from all directions, making the alarm of the alarm 10 more effective and reliable.

[0072] Example 6 Please see Figures 2 to 3 In some embodiments of this application, the cover housing 13 is provided with a first port 133, and the mounting base 11 is provided with a second port 111, wherein the first port 133 and the second port 111 are adapted to each other; The circuitry inside the housing 13 and the circuitry inside the mounting base 11 are electrically connected through the first port 133 and the second port 111.

[0073] Thus, the circuits inside the housing 13 and the mounting base 11 can exchange electrical energy or electrical signals through the connection of the first port 133 and the second port 111.

[0074] Specifically, a first circuit board is installed inside the cover housing 13. The alarm sensor 15, the control circuit of the alarm sensor 15, the smoke alarm circuit, etc., are all located on the first circuit board, and are electrically connected to the external circuit through the first port 133. A second circuit board is installed inside the mounting base 11. The obstacle sensor 12, the control circuit of the obstacle sensor 12, the obstacle alarm circuit, etc., are all located on the second circuit board, and are electrically connected to the external circuit through the second port 111.

[0075] The power supply for the alarm 10 can be an external power source, which can simultaneously or separately supply power to the first circuit board and the second circuit board.

[0076] When an external power source supplies power to both the first and second circuit boards simultaneously, the external power source first connects to one of the first and second circuit boards, and then supplies power to the other of the first and second circuit boards via that one. For example, the external power source first connects to the first circuit board, and then supplies power to the second circuit board via the first circuit board. The first and second circuit boards are electrically connected through a first port 133 and a second port 111. Electrical energy enters the first circuit board through the external power source, and then enters the second circuit board through the first port 133 and the second port 111.

[0077] When an external power source supplies power to the first circuit board and the second circuit board respectively, the external power source is connected to the first circuit board and the second circuit board respectively, and the external power source directly provides electrical energy to the first circuit board and the second circuit board respectively.

[0078] Of course, the power supply for the alarm 10 can also be an independent power supply, that is, at least one of the first circuit board and the second circuit board is equipped with an independent power supply that can store electricity.

[0079] When both the first circuit board and the second circuit board are equipped with independent power supplies, the independent power supplies of the first circuit board and the second circuit board respectively provide power to the first circuit board and the second circuit board.

[0080] When only one of the first and second circuit boards has an independent power supply, the circuit board with the independent power supply supplies power to the circuit board without an independent power supply through the cooperation of the first port 133 and the second port 111. For example, if the first circuit board has an independent power supply, the independent power supply supplies power to the first circuit board, and then supplies power to the second circuit board through the cooperation of the first port 133 and the second port 111.

[0081] When the first circuit board and the second circuit board need to exchange information, they can also do so through the first port. The cooperation of port 133 and the second port 111 completes the information exchange.

[0082] Example 7 Please see Figures 3 to 4 In some embodiments of this application, the first port 133 is disposed at the support foot 132, and the position of the second port 111 corresponds to the position of the first port 133.

[0083] It is understood that the cover shell 13 is connected to the mounting base 11 via the support foot 132. Therefore, the cover shell 13 contacts the mounting base 11 via the support foot 132, and the other parts of the cover shell 13 are suspended at the mounting base 11 by the support foot 132. The space where the cover shell 13 is suspended at the mounting base 11 is the airflow channel 14.

[0084] Since the cover shell 13 only contacts the mounting base 11 through the support foot 132, the first port 133 is set at the support foot 132. This allows the first port 133 to be connected to the second port 111 when the cover shell 13 is mounted on the mounting base 11 through the support foot 132, without the need for additional structures.

[0085] Example 8 Please see Figures 2 to 3 as well as Figure 7 In some embodiments of this application, a mounting plate 16 is detachably mounted on the side of the mounting base 11 away from the cover housing 13, and the mounting plate 16 is provided with mounting holes 161.

[0086] It is understood that, in the embodiments of this application, when installing the alarm 10, the mounting plate 16 is first installed in the designated position, and then the assembly of the mounting base 11 and the cover housing 13 is installed on the mounting plate 16. When installing the mounting plate 16, holes are first drilled in the designated position according to the hole positions of the mounting holes 161 in the mounting plate 16, then the mounting holes 161 are aligned with the drilled holes in the designated position, and the mounting plate 16 is fixedly installed in the designated position with screws.

[0087] Thus, the mounting plate 16 is first fixed in the designated position, and then the functional part formed by the combination of the mounting base 11 and the cover housing 13 is installed on the mounting plate 16. When maintenance of the alarm 10 is required, the functional part of the alarm 10 can be removed from the designated position simply by detaching the cover housing 13 from the mounting plate 16, and then the functional part of the alarm 10 can be maintained (for example, clearing obstructions in the airflow channel 14). After the maintenance of the alarm 10 is completed, the functional part of the alarm 10 is reinstalled back on the corresponding mounting plate 16 without the need for re-drilling.

[0088] Example 9 Please see Figure 7 In some embodiments of this application, the mounting hole 161 is an oblong hole, the number of mounting holes 161 is at least one, a scale 162 is provided at the mounting hole 161, and a scale 162 is provided between adjacent mounting holes 161.

[0089] It is understood that, in the embodiments of this application, before installing the mounting plate 16 in the designated position, it is necessary to drill holes at the designated position according to the hole positions of the mounting holes 161 of the mounting plate 16. The hole spacing and opening size between the mounting holes 161 can be quickly determined by the scale 162 between the mounting holes 161 and the mounting holes 161.

[0090] This makes the installation of the mounting plate 16 more convenient, accurate, and quick.

[0091] Specifically, when there is only one mounting hole 161, holes can be drilled corresponding to the positions in the mounting hole 161, and the hole spacing is determined according to the scale 162 at the mounting hole 161. In this case, when installing the mounting plate 16, multiple screws can be installed in the same mounting hole 161 to secure the mounting plate 16.

[0092] On the other hand, when there are multiple mounting holes 161, the hole spacing can be determined according to the scale 162 between the mounting holes 161. At this time, the mounting plate 16 is positioned through multiple mounting holes 161, and multiple screws are used to fix the mounting plate 16 in the designated position to make the mounting plate 16 securely installed.

[0093] Example 10 Please see Figures 6 to 7 In some embodiments of this application, one of the mounting base 11 and the hanging plate 16 is provided with a slot 163, and the other of the mounting base 11 and the hanging plate 16 is provided with a first locking block 112; A second locking block 164 is provided in the slot 163. When the mounting base 11 and the hanging plate 16 are rotated relative to each other, the first locking block 112 slides in the slot 163 and eventually hooks the second locking block 164.

[0094] This allows the mounting base 11 to be installed or removed quickly and easily at the mounting plate 16.

[0095] In the embodiments of this application, when the mounting base 11 is installed on the hanging plate 16, the mounting base 11 is brought close to the hanging plate 16, and the first locking block 112 extends into the locking groove 163. The mounting base 11 is rotated relative to the first locking block 112, which slides in the locking groove 163 until the first locking block 112 hooks the second locking block 164 in the locking groove 163.

[0096] Thus, the installation of mounting base 11 is completed.

[0097] When it is necessary to remove the mounting base 11 from the mounting plate 16, rotate the mounting base 11 relative to the mounting plate 16 in the opposite direction of installation, so that the first locking block 112 slides in the locking groove 163 until the first locking block 112 disengages from the second locking block 164 in the locking groove 163. Then move the mounting base 11 away from the mounting plate 16.

[0098] Thus, the disassembly of mounting base 11 is completed.

[0099] Specifically, in the embodiments of this application, the slot 163 is disposed in the mounting plate 16 or the mounting base 11. Taking the slot 163 disposed in the mounting plate 16 as an example, the first locking block 112 is disposed in the corresponding position of the mounting base 11. The mounting plate 16 is fixed in the designated position. When the mounting base 11 is to be installed on the mounting plate 16, the mounting base 11 is brought close to the mounting plate 16, and the first locking block 112 is placed in the slot 163. The mounting base 11 is rotated, causing the first locking block 112 to slide in the slot 163 until the first locking block 112 hooks the second locking block 164 in the slot 163. The slot 163 limits the first locking block 112 in the radial direction of the mounting plate 16, and the second locking block 164 limits the first locking block 112 in the axial direction of the mounting plate 16. In this way, the mounting base 11 is detachably installed on the mounting plate 16.

[0100] Similarly, if it is necessary to remove the mounting base 11 from the mounting plate 16, rotate the mounting base 11 in the opposite direction so that the first locking block 112 slides away from the second locking block 164 in the locking groove 163 until the first locking block 112 disengages from the second locking block 164. In this way, the mounting base 11 can be removed from the mounting plate 16.

[0101] Example 11 Please see Figure 1 as well as Figures 4 to 5 In some embodiments of this application, the cover housing 13 is provided with an inclined surface pointing from the edge to the center on the side near the airflow channel 14, and the inclined surface is provided with a grille 134, the grille bars 135 of the grille 134 are stacked sequentially in the direction pointing to the end face of the cover housing 13. The alarm sensor 15 is located inside the cover housing 13.

[0102] Understandably, when the airflow reaches the alarm 10, it flows within the airflow channel 14 and then enters the housing 13 through the grille 134. The alarm sensor 15 is located inside the housing 13. When the airflow enters the housing 13, it can be detected by the alarm sensor 15, which monitors the smoke concentration in the airflow near the alarm 10.

[0103] When the alarm 10 is a smoke alarm, the alarm sensor 15 may be affected by dust, resulting in a false alarm. Therefore, the alarm sensor 15 is placed inside the cover housing 13, which blocks dust and prevents dust outside the alarm 10 from affecting the alarm sensor 15.

[0104] Over time, dust will accumulate at the cover housing 13, and may even enter the interior of the cover housing 13 through the grille 134, thereby affecting the alarm sensor 15's monitoring of smoke concentration.

[0105] Therefore, the side of the cover shell 13 near the airflow channel 14 is set as a slope pointing from the edge to the center, and the grille is... 134 is set on the slope, and the grid bars 135 of the grid 134 are stacked in sequence in the direction pointing to the end face of the cover housing 13. Adjacent grid bars 135 partially overlap in the direction perpendicular to the entrance of the grid 134, and adjacent grid bars 135 extend along the slope to the center of the cover housing.

[0106] Thus, a grille 134 is formed that is open in the side direction of the cover housing 13 but not open in the end face direction of the cover housing 13.

[0107] Alarm 10 is usually mounted on the ceiling. When alarm 10 is mounted on the ceiling, the mounting plate 16 can be installed on the ceiling first, then the cover housing 13 can be installed on the mounting base 11, and then the assembly formed by the cover housing 13 and the mounting base 11 can be installed on the mounting plate 16.

[0108] In this installation method, the mounting base 11 is above the cover housing 13, and the end face of the cover housing 13 faces the mounting base 11. Therefore, the end face of the cover housing 13 is facing upwards. Due to gravity, dust will fall onto the end face of the cover housing 13. Since the grille 134 is open on the side of the cover housing 13 but not on the end face, dust cannot fall into the interior of the cover housing 13 through the grille 134.

[0109] In this way, the deposited dust can be effectively prevented from entering the cover housing 13 through the grille 134 and affecting the alarm sensor 15, thereby further improving the reliability of the alarm 10.

[0110] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] Furthermore, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An alarm device with obstacle detection function, characterized in that, include: Mounting base; An obstacle sensor is mounted on the mounting base; Cover shell; as well as An alarm sensor is installed on the cover housing; An airflow channel is formed between the cover housing and the mounting base to allow the detected object to reach the alarm sensor. The airflow channel provides a passage for the substance that triggers the alarm sensor to reach the alarm sensor. The airflow enters the cover housing through the airflow channel and then reaches the alarm sensor. Both the airflow channel and the alarm sensor are located within the detection area of ​​the obstacle sensor. The obstacle sensor is configured to emit a sensing signal toward the cover housing and to receive the reflected sensing signal.

2. The alarm device with obstacle detection function according to claim 1, characterized in that, A reflector is provided on the side of the cover shell near the mounting base, and the reflector is cone-shaped; The tip of the reflector is directed toward the obstacle sensor and aligned with the center of the obstacle sensor.

3. The alarm device with obstacle detection function according to claim 1, characterized in that, The obstacle sensor is an ultrasonic sensor.

4. The alarm device with obstacle detection function according to claim 1, characterized in that, The cover housing is provided with at least one support foot, and the cover housing is detachably mounted to the mounting base via the support foot.

5. The alarm device with obstacle detection function according to claim 4, characterized in that, The end of the support leg is provided with a plug, the plug is provided with a limit hole, the mounting base is provided with a insertion hole, and the mounting base is provided with a limit component; The plug is adapted to the socket, and the limiting member is adapted to the limiting hole; When the plug is inserted into the socket, the limiting member is inserted into the limiting hole.

6. The alarm device with obstacle detection function according to claim 5, characterized in that, The number of support feet is four, and each support foot is provided with a plug at a corresponding position. The position and number of the plug holes are adapted to the position and number of the support feet.

7. The alarm device with obstacle detection function according to claim 5, characterized in that, The end of the limiting member is provided with a wedge-shaped inclined surface. After the plug contacts the limiting member, it pushes the limiting member through the wedge-shaped inclined surface. The limiting member abuts against the plug through a spring.

8. The alarm device with obstacle detection function according to claim 1, characterized in that, The cover housing is provided with a first port, and the mounting base is provided with a second port, wherein the first port and the second port are adapted to each other; The circuitry within the cover housing and the circuitry within the mounting base are electrically connected via the first port and the second port.

9. The alarm device with obstacle detection function according to claim 8, characterized in that, The cover shell is provided with at least one support foot, the first port is located at the support foot, and the position of the second port corresponds to the position of the first port.

10. The alarm device with obstacle detection function according to claim 1, characterized in that, The cover shell has an inclined surface extending from the edge to the center on the side near the airflow channel. The inclined surface is provided with a grid, and the grid bars of the grid are stacked sequentially in the direction pointing towards the end face of the cover shell.

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