Smoke alarm device

Abstract

The embodiment of the utility model provides a smoke alarm device which comprises an upper shell, a circuit board and a lower shell, the circuit board is installed between the upper shell and the lower shell, a toggle switch is arranged on the circuit board, a detachable hanging plate is installed on the lower shell, a first protruding structure is arranged on the hanging plate, and a moving structure is arranged on the lower shell. When the hanging plate rotates in the first direction relative to the lower shell, a first protruding structure arranged on the hanging plate presses a moving structure arranged on the lower shell, so that the moving structure moves and then presses a shifting rod on the toggle switch to the power-on gear, and meanwhile the smoke alarm device cannot be in the power-off state again based on rotation of the hanging plate in the second direction. And the safety of the smoke alarm device in the use process is improved.

Description

Technical Field

[0001] This application relates to the field of alarm technology, and in particular to a smoke alarm device. Background Technology

[0002] High-temperature fires, as common accidents and disasters, seriously threaten personal and property safety, often causing incalculable losses. Smoke alarm devices are an efficient fire prevention tool. In the early stages of a fire, smoke alarm devices can detect and sound an alarm in time, giving residents sufficient time to take action and prevent the fire from spreading further.

[0003] Currently, the power-on switch of smoke alarm devices typically uses a metal spring, a contact spring, or a micro switch. The adjustment of this switch is linked to the smoke alarm device's casing or mounting plate; for example, rotating the casing can power on or off the smoke alarm. However, this arbitrarily adjustable power-on / off switching method means that the smoke alarm device may be in a state of power failure at any time, posing a serious safety hazard. Utility Model Content

[0004] This application provides a smoke alarm device. Through the cooperation of the first protrusion structure on the mounting plate and the movable structure on the lower shell, the smoke alarm device is powered on by rotating the mounting plate in a first direction, and the smoke alarm device is not powered off by rotating the mounting plate in a second direction.

[0005] The smoke alarm device includes an upper housing, a printed circuit board (PCB), and a lower housing. The PCB is installed between the upper and lower housings and has a toggle switch. A detachable mounting plate is installed on the lower housing, and the mounting plate has a first protruding structure. A movable structure is also provided on the lower housing.

[0006] When the mounting plate rotates in the first direction relative to the lower shell, the first protrusion on the mounting plate presses against the movable structure on the lower shell, causing the movable structure to move and press the lever on the toggle switch to the power-on position.

[0007] Specifically, when the mounting plate rotates in the second direction relative to the lower shell, the first protrusion on the mounting plate stops pressing on the moving structure on the lower shell, causing the moving structure to return to its initial position, and the lever on the toggle switch remains in the energized position.

[0008] Specifically, the movable structure can be a spring-loaded structure, with one end connected to the lower shell and the other end of the spring-loaded structure being open on the lower shell. Using a one-piece spring-loaded structure can reduce the number of parts in the product and lower production costs.

[0009] The spring-loaded structure includes a first surface where the circuit board is located, and a second protrusion is provided on the first surface. The second protrusion facilitates the spring-loaded structure in moving the lever on the toggle switch to the power-on position.

[0010] Furthermore, the spring structure includes a second surface where the mounting plate is located, and a third protrusion is provided on the second surface. This third protrusion facilitates the application of force from the first protrusion on the mounting plate to the spring structure, causing the spring structure to move downwards.

[0011] Furthermore, the third protrusion on the spring structure is a structure that protrudes evenly from the first end to the second end of the spring structure. This evenly protruding structure reduces the friction between the first and third protrusions when the first protrusion applies force to the third protrusion, thus making it easier for the user to rotate the mounting plate.

[0012] When the mounting plate rotates relative to the lower shell in a first direction, the first protrusion on the mounting plate presses against the second protrusion on the spring-loaded structure, causing the third protrusion on the spring-loaded structure to press the lever on the toggle switch to the power-on position. This allows the spring-loaded structure to move the lever on the toggle switch to the power-on position with a smaller deformation angle when the mounting plate is rotated.

[0013] Understandably, the toggle switch also includes a power-off position, which is closer to the second end of the spring structure than the power-on position. The power-on and power-off positions are switched by sliding the lever on the toggle switch.

[0014] The mounting plate is equipped with a snap-fit ​​structure, and the lower shell is equipped with a fastening structure. The snap-fit ​​structure on the mounting plate is connected to the fastening structure on the lower shell by rotational engagement.

[0015] The upper and lower shells each include corresponding screw post structures. The upper and lower shells are fixed based on the corresponding screw post structures, thereby achieving the fixation between the upper and lower shells and the circuit board.

[0016] As can be seen, in conventional smoke alarm systems, after power-on, the user can still de-power the smoke alarm by operating the mounting plate. This could lead to the user believing the smoke alarm is powered on and working normally, when in fact it is not powered on and is in a de-powered state, posing a safety hazard. In this application, rotating the mounting plate in a first direction causes a first protrusion on the mounting plate to press against a movable structure on the lower shell. This movable structure moves and presses the lever on the toggle switch to the power-on position, preventing further rotation of the mounting plate in a second direction from moving the lever to the power-off position. This not only makes it easier for the user to set the smoke alarm to the power-on state but also prevents the user from arbitrarily setting it to the power-off state, thus improving the safety of the smoke alarm during actual use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A front sectional view of a smoke alarm device provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of a lower shell provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a hanging plate provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of an upper shell provided in an embodiment of this application;

[0022] Reference numerals: 110, upper shell; 111, second screw post structure; 120, circuit board; 121, toggle switch; 122, power-on position; 123, power-off position; 130, lower shell; 131, moving structure; 132, first screw post structure; 133, third protrusion structure; 134, second protrusion structure; 135, snap-fit ​​structure; 140, hanging plate; 141, snap-fit ​​structure; 142, first protrusion structure. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0024] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps is not limited to the steps listed, but may optionally include steps not listed, or may optionally include other steps inherent to these processes, methods, products, or apparatuses.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Please see Figure 1 , Figure 1 This is a front sectional view of a smoke alarm device provided in an embodiment of this application, as shown below. Figure 1 As shown, it includes an upper shell 110, a circuit board 120, a lower shell 130, and a mounting plate 140; a toggle switch 121 is provided on the circuit board, and the toggle switch 121 includes a power-on position 122 and a power-off position 123; a movable structure 131 is provided on the lower shell 130; and a first protrusion structure 142 is provided on the mounting plate 140.

[0027] The circuit board 120 is installed between the upper shell 110 and the lower shell 130, and the mounting plate 140 is installed on the lower shell 130.

[0028] The upper housing 110 is used to protect the internal components from external environmental influences such as dust and moisture. Furthermore, the upper housing 110 can be designed with appropriate ventilation holes or grilles to allow airflow and enable smoke to smoothly enter the sensor area.

[0029] Circuit board 120 is a key component for smoke detection, signal processing, alarm triggering, and possible wireless communication. It may include all necessary electronic components for smoke detection alarms, such as microprocessors, sensors, indicator lights, and buzzers. For smart smoke alarm devices, circuit board 120 may also include a wireless communication module (such as Wi-Fi, Zigbee, Bluetooth, etc.) allowing the smoke alarm device to network with other smart home devices for remote monitoring and control. Circuit board 120 is located between the upper housing 110 and the lower housing 130 and can be held in place by a specially designed bracket or other fixing structure to prevent displacement due to vibration or impact.

[0030] The lower shell 130 and the upper shell 110 work together to form a sealed space, effectively isolating the external environment from the internal components, such as preventing moisture, dust and other contaminants from entering the interior, thus improving the durability and reliability of the equipment.

[0031] Mounting plate 140 is used to secure and support the smoke alarm device itself, ensuring that it can be firmly installed on the wall or ceiling.

[0032] The toggle switch 121 is used to control the power status of the circuit board. The power-on position 122 and the power-off position 123 on the toggle switch 121 are switched by sliding the lever on the toggle switch 121.

[0033] When the mounting plate 140 rotates relative to the lower housing 130 in the first direction, the first protrusion 142 on the mounting plate 140 presses against the movable structure 131 on the lower housing 130, causing the movable structure 131 to move and press the lever on the toggle switch 121 to the power-on position 122. It is understood that when the lever on the toggle switch 121 moves to the power-on position 122, the smoke alarm device is in the power-on state (working state).

[0034] When the mounting plate 140 rotates in the second direction relative to the lower shell 130, the first protrusion structure 142 on the mounting plate 140 stops pressing on the moving structure 131 on the lower shell 130, causing the moving structure 131 to return to its initial position. At this time, the lever on the toggle switch 121 will not receive any other action from the moving structure 131. Therefore, the toggle switch 121 is still in the power-on position 122.

[0035] In this application, the relative movement between the mounting plate 140 and the lower housing 130 allows the smoke alarm device to be automatically switched to the power-on state without manual intervention. In particular, when the mounting plate 140 rotates in the reverse direction from the installation position, it will not accidentally trigger the toggle switch 121 to return to the power-off position 123, thus keeping the smoke alarm device in working mode unless the user actively performs a power-off operation.

[0036] For details, please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a lower shell provided in an embodiment of this application, as shown below. Figure 2 As shown, the left side is a structural diagram corresponding to the surface where the hanging plate 140 is located on the lower shell 130, and the right side is a structural diagram corresponding to the surface where the circuit board 120 is located on the lower shell 130.

[0037] The lower shell 130 is provided with a plurality of first screw post structures 132 for fixing to the upper shell 110. In order to facilitate the fixing between the lower shell 130 and the upper shell 110, the plurality of first screw post structures 132 can be symmetrically distributed based on the center of the lower shell 130.

[0038] The movable structure 131 provided on the lower shell 130 can be a spring-loaded structure. The first end of the spring-loaded structure is connected to the lower shell 130, and the second end of the spring-loaded structure is hollowed out on the lower shell 130. It can be understood that the spring-loaded structure can undergo elastic deformation based on the action of external force, that is, the second end of the spring-loaded structure can move based on the action of external force.

[0039] The spring structure includes a second surface where the hanging plate 140 is located, and a third protruding structure 133 is provided on the second surface.

[0040] The spring structure also includes a first surface where the circuit board 120 is located, and a second protrusion structure 134 is provided on the first surface.

[0041] The lower shell 130 is also provided with a snap-fit ​​structure 135, which is used to cooperate with the snap-fit ​​structure 141 on the hanging plate 140, so as to install the hanging plate 140 onto the lower shell 130.

[0042] For details, please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a hanging plate provided in an embodiment of this application, such as... Figure 3 As shown, the left side is a structural diagram of the surface of the mounting plate 140 that is used for installation on a wall or ceiling, and the right side is a structural diagram of the surface of the lower shell 130 of the mounting plate 140.

[0043] The mounting plate 140 is provided with a snap-fit ​​structure 141, which is used to rotate and engage with the latching structure 135 provided on the lower shell 130. The mounting plate 140 is also provided with a first protrusion structure 142. When the mounting plate 140 rotates in a first direction and engages with the lower shell 130, the first protrusion structure 142 on the mounting plate 140 can apply a downward force to the third protrusion structure 133 on the spring structure of the lower shell 130, causing the spring structure to bend and deform downward. As the spring structure deforms, the second protrusion structure 134 on the spring structure pushes the lever on the toggle switch 121 from the power-off position 123 to the power-on position 122.

[0044] To facilitate rotation of the mounting plate 140 in the first direction, when the first protrusion 142 on the mounting plate 140 applies a downward force to the third protrusion 133 on the spring-loaded structure of the lower shell 130, the spring-loaded structure is more likely to bend and deform downwards. The third protrusion 133 on the spring-loaded structure can be located near the second end of the spring-loaded structure, and can be a structure that protrudes uniformly from the first end to the second end of the spring-loaded structure. Correspondingly, the first protrusion 142 on the mounting plate 140 can also be a structure that protrudes uniformly from the end that contacts the third protrusion 133 on the spring-loaded structure to the other end. This reduces the friction between the first protrusion 142 and the third protrusion 133 when the first protrusion 142 applies a force to the third protrusion 133 on the spring-loaded structure, thus making it easier to rotate the mounting plate in the first direction.

[0045] Understandably, the power-off position 123 on the toggle switch 121 is closer to the second end of the spring structure than the power-on position 122, and the highest point of the second protrusion 134 on the spring structure should be on one side of the power-on position 122 and the power-off position 123 on the vertical plane. Therefore, when the spring structure bends and deforms downwards based on the force applied by the first protrusion 142 on the mounting plate 140, the second protrusion 134 on the spring structure will move diagonally downwards in the corresponding direction of the toggle switch 121. Since the power-off position 123 is closer to the second end of the spring structure, and the spring structure mainly moves downwards at the second end, if the lever of the toggle switch 121 is currently in the power-off position 123, then after the second protrusion 134 on the spring structure touches the lever of the toggle switch 121, it will apply a force to the lever in the direction of the power-on position 122, thereby causing the lever to move to the power-on position 122.

[0046] If the mounting plate 140 rotates in the second direction, the first protrusion 142 on the mounting plate 140 will no longer apply force to the spring structure. At this time, the spring structure will no longer bend and deform, but will return to its initial state. In this case, the second protrusion 134 on the spring structure will no longer apply any force to the lever on the toggle switch 121. The lever on the toggle switch 121 will not move to the power-off position 123 based on the rotation of the mounting plate 140, thereby avoiding arbitrary switching to the power-off position 123 based on external force.

[0047] For details, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of an upper shell provided in an embodiment of this application, as shown below. Figure 4As shown, the upper shell 110 includes multiple second screw post structures 111, which correspond to multiple first screw post structures 132. The upper shell 110 and the lower shell 130 are fixed together by multiple screws passing through the multiple second screw post structures 111 and the multiple first screw post structures 132. By using the multiple second screw post structures 111 on the upper shell 110 and the multiple first screw post structures 132 on the lower shell 130 in conjunction with screws for fixing, the stability and sealing of the entire device can be ensured.

[0048] The upper shell 110 and the lower shell 130 shall be provided with a structure for fixing the circuit board 120, so that when the upper shell 110 and the lower shell 130 are fixed based on multiple second screw post structures 111 and multiple first screw post structures 132, the circuit board 120 can also be fixed between the upper shell 110 and the lower shell 130.

[0049] In addition, LED indicator lights can be installed on the circuit board 120. When the smoke alarm device is successfully powered on, the user can be notified by a color change of the LED indicator light or a brief beep, enhancing user-friendliness. Furthermore, for models that support network connectivity, the device status can be remotely monitored via a mobile application, real-time alarm information can be received, and even firmware updates can be performed, further improving user experience and security.

[0050] Based on the foregoing embodiments, it can be seen that in conventional solutions, the smoke alarm device has a separate power-on structure, which is assembled onto the lower housing 130, resulting in an extra part in the product. However, the power-on structure (i.e., the spring-loaded structure) of this invention is integrated with the lower housing 130, reducing the number of parts and lowering the overall cost. Furthermore, in conventional solutions, the electronic switch on the circuit board 120 of the smoke alarm device uses a metal spring structure. The power-on structure applies force to the metal spring to energize the product. This method is prone to deformation of the metal spring, preventing it from energizing the product. This application uses a toggle switch 121 for power-on, avoiding deformation and failure. Additionally, in conventional solutions, after the smoke alarm device is powered on, the user can operate the mounting plate 140 to de-energize it. This could lead to the user believing the smoke alarm device is powered on and working normally, when in fact it is not powered on and is in a de-energized state, posing a safety hazard. In this application, once the smoke alarm device is powered on, the user cannot de-energize it under normal use. Meanwhile, this utility model provides a way to cut off power to factory production personnel. Production personnel can use tools to move the lever of the toggle switch 121 back to the power-off position 123 through the buckle hole on the lower shell 130 that is fixed to the hanging plate 140.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0052] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0053] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0054] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0055] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A smoke alarm device, characterized in that The device comprises an upper shell, a circuit board and a lower shell, the circuit board is installed between the upper shell and the lower shell, a toggle switch is arranged on the circuit board, a detachable hanging plate is installed on the lower shell, a first protruding structure is arranged on the hanging plate, a moving structure is arranged on the lower shell, wherein, When the hanging plate rotates in a first direction relative to the lower shell, the first protruding structure arranged on the hanging plate presses the moving structure arranged on the lower shell, so that the moving structure moves and then presses the lever on the toggle switch to the upper power position.

2. The apparatus of claim 1, wherein, When the hanging plate rotates in a second direction relative to the lower shell, the first protruding structure arranged on the hanging plate stops pressing the moving structure arranged on the lower shell, so that the moving structure returns to the initial position, and the lever on the toggle switch is still in the upper power position.

3. The apparatus of claim 1, wherein, The moving structure is a pop bone structure, the first end of the pop bone structure is connected to the lower shell, and the second end of the pop bone structure is in a hollow state on the lower shell.

4. The apparatus of claim 3, wherein, The pop bone structure includes a first surface on which the circuit board is located, and a second protruding structure is arranged on the first surface.

5. The apparatus of claim 4, wherein, The pop bone structure includes a second surface on which the hanging plate is located, and a third protruding structure is arranged on the second surface.

6. The apparatus of claim 5, wherein, The third protruding structure arranged on the pop bone structure is a structure that protrudes uniformly from the first end of the pop bone structure to the second end of the pop bone structure.

7. The apparatus of claim 6, wherein, When the hanging plate rotates in a first direction relative to the lower shell, the first protruding structure arranged on the hanging plate presses the second protruding structure on the pop bone structure, so that the third protruding structure on the pop bone structure presses the lever on the toggle switch to the upper power position.

8. The device of any one of claims 3-7, wherein, The toggle switch also includes an off position, which is closer to the second end of the pop bone structure than the upper power position, and the upper power position and the off position are switched by sliding the lever on the toggle switch.

9. The apparatus of claim 1, wherein, The hanging plate is provided with a buckle structure, and the lower shell is provided with a buckle structure, the buckle structure arranged on the hanging plate is connected by rotating with the buckle structure arranged on the lower shell.

10. The apparatus of claim 1, wherein, The upper shell and the lower shell respectively comprise corresponding screw column structures, and the upper shell and the lower shell are fixed based on the corresponding screw column structures, so as to realize the fixation among the upper shell, the lower shell and the circuit board.

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