Smoke sensor easy to assemble

Abstract

The utility model relates to the technical field of smoke sensors, in particular to a smoke sensor easy to assemble, which comprises a fixed shell, a smoke guide shell, a mounting shell, a housing and an induction module, the fixed shell is clamped with the smoke guide shell, the smoke guide shell is provided with an accommodating cavity and a smoke inlet communicated with the accommodating cavity, the mounting shell and the housing are both arranged in the accommodating cavity, and the induction module is arranged in the accommodating cavity. The installation shell is connected with the smoke guide shell in a clamped mode, the cover shell is connected with the installation shell in a clamped mode, an installation cavity is defined by the cover shell and the installation shell, the cover shell is provided with an avoiding hole communicated with the installation cavity, and the sensing module is installed in the installation cavity, penetrates through the avoiding hole and extends into the containing cavity. According to the smoke sensor easy to assemble, through clamping connection between the fixing shell and the smoke guide shell, clamping connection between the mounting shell and the smoke guide shell and clamping connection between the housing and the mounting shell, connection between all the parts is stable and reliable, no extra tools or materials are needed for assembling the smoke sensor easy to assemble, the assembling process is greatly simplified, and the assembling efficiency is improved. The purpose of improving the assembly efficiency of the smoke sensor is achieved.

Description

Technical Field

[0001] This utility model relates to the field of smoke sensor technology, and in particular to an easy-to-assemble smoke sensor. Background Technology

[0002] With the continuous development of smoke detection technology, smoke sensors, as core equipment for fire early warning, have consistently focused on performance stability and ease of assembly in their technological iterations. Traditionally, the connection and fixing of the various functional components of a smoke sensor relies primarily on conventional mechanical fastening methods. During assembly, screws, glue, and other tools or materials are needed to connect each component individually, and the positioning and calibration of each component must be done manually. However, this method of connecting each component of a smoke sensor individually using screws, glue, and other tools or materials not only consumes a significant amount of assembly time but also requires the assistance of screw-making machines or glue-applying machines, resulting in low assembly efficiency for smoke sensors. Utility Model Content

[0003] Therefore, it is necessary to provide an easy-to-assemble smoke sensor to address the technical problem of low assembly efficiency of smoke sensors.

[0004] An easily assembled smoke sensor includes: a fixed shell, a smoke guide shell, a mounting shell, a cover shell, and a sensing module. The fixed shell is snapped into the smoke guide shell. The smoke guide shell has a receiving cavity and a smoke inlet communicating with the receiving cavity. The mounting shell and the cover shell are both disposed within the receiving cavity. The mounting shell is snapped into the smoke guide shell, and the cover shell is snapped into the mounting shell, forming a mounting cavity with the mounting shell. The cover shell has a clearance hole communicating with the mounting cavity. The clearance hole communicates with the receiving cavity. The sensing module is installed within the mounting cavity and extends through the clearance hole into the receiving cavity.

[0005] In one embodiment, the mounting shell includes a base shell, a surrounding wall, and a fastener. The base shell and the surrounding wall form a limiting groove. The fastener is disposed in the limiting groove and engages with the base shell. The sensing module is embedded in the limiting groove and engages with the fastener.

[0006] In one embodiment, the fastener includes an inlay portion and a snap-fit ​​portion, the inlay portion snapping into the base shell and the snap-fit ​​portion snapping into the sensing module.

[0007] In one embodiment, the base shell is provided with a groove that communicates with the limiting groove, and the groove engages with the inlay portion.

[0008] In one embodiment, the fastener further includes a spring and a protrusion connecting the inlay portion, the inlay portion having a movable groove corresponding to the position of the spring, and the base shell having a groove that engages with the protrusion.

[0009] In one embodiment, the base shell is provided with a guide surface that gradually widens in the direction away from the groove.

[0010] In one embodiment, the fastener is further provided with an inclined surface, which is located on the side of the protrusion near the groove and gradually tapers toward the groove.

[0011] In one embodiment, the cover includes a housing and a hook block, a portion of the housing is embedded in the limiting groove and is provided with the clearance hole, and the hook block is engaged with the side of the enclosure wall opposite to the limiting groove.

[0012] In one embodiment, the sensing module includes a circuit board and a sensor, the circuit board being snapped into the mounting housing, and the sensor extending through the clearance hole into the receiving cavity.

[0013] In one embodiment, the smoke guide shell includes an end cap, a positioning post, and a hook. The end cap has the receiving cavity and the smoke inlet. The positioning post is disposed at the edge of the end cap. The fixing shell has a rotating groove that engages with the positioning post. The hook is disposed in the receiving cavity and engages with the mounting shell.

[0014] The advantages of the easy-to-assemble smoke sensor provided in this application are as follows:

[0015] 1. The fixed shell is snapped into the smoke guide shell, the mounting shell is snapped into the smoke guide shell, and the cover shell is snapped into the mounting shell, forming a mounting cavity with the mounting shell. The sensing module is installed in the mounting cavity. Through the snapping of the fixed shell into the smoke guide shell, the mounting shell into the smoke guide shell, and the cover shell into the mounting shell, the connection between each component is stable and reliable. The assembly of this easy-to-assemble smoke sensor does not require additional tools or materials, which greatly simplifies the assembly process and improves the assembly efficiency of the smoke sensor.

[0016] 2. The mounting cavity formed by the cover and mounting shell to house the sensing module provides a stable installation environment for the sensing module, which can effectively protect the sensing module from interference and damage from external factors, thereby extending the service life of the sensing module. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the easy-to-assemble smoke sensor shown in this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the structure of the smoke guide housing for the easy-to-assemble smoke sensor.

[0019] Figure 3 for Figure 1 A perspective view of an easily assembled smoke sensor;

[0020] Figure 4 for Figure 3 An exploded view of the easily assembled smoke sensor is shown.

[0021] Figure 5 for Figure 4 An enlarged schematic diagram of part A of the easily assembled smoke sensor shown;

[0022] Figure 6 for Figure 4 The diagram shows the structure of the fastener for the easy-to-assemble smoke sensor.

[0023] The meanings of the numbers in the attached diagram are as follows:

[0024] 100. Easy-to-assemble smoke sensor;

[0025] 10. Fixed shell; 11. Rotating groove;

[0026] 20. Smoke guide shell; 21. Receiving cavity; 22. Smoke inlet; 23. End cap; 24. Positioning post; 25. Hook;

[0027] 30. Mounting shell; 31. Base shell; 311. Insert groove; 312. Groove; 313. Guide surface; 32. Enclosure; 33. Fastener; 331. Insert part; 332. Snap-fit ​​part; 333. Spring piece; 334. Protrusion; 335. Movable groove; 336. Inclined surface;

[0028] 40. Cover; 42. Clearance hole; 43. Housing; 44. Hook block;

[0029] 50. Sensing module; 51. Circuit board; 52. Sensor. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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 this utility model.

[0032] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] like Figure 1 As shown, it is the easy-to-assemble smoke sensor 100 of this utility model.

[0037] like Figures 1 to 3 As shown, the easily assembled smoke sensor 100 includes: a fixed housing 10, a smoke guide housing 20, a mounting housing 30, a cover housing 40, and a sensing module 50. The fixed housing 10 is snapped into the smoke guide housing 20. The smoke guide housing 20 has a receiving cavity 21 and a smoke inlet 22 communicating with the receiving cavity 21. The mounting housing 30 and the cover housing 40 are both disposed within the receiving cavity 21. The mounting housing 30 is snapped into the smoke guide housing 20, and the cover housing 40 is snapped into the mounting housing 30, forming a mounting cavity (not shown). The cover housing 40 has a clearance hole 42 communicating with the mounting cavity and the receiving cavity 21. The sensing module 50 is installed in the mounting cavity and extends through the clearance hole 42 into the receiving cavity 21. The fixed housing 10 is snapped into the smoke guide housing 20, and the mounting housing 30 is snapped into the smoke guide housing 20. The housing 40 and the mounting housing 30 are snapped together, forming a mounting cavity. The sensing module 50 is installed in the mounting cavity by snapping the fixing housing 10 with the smoke guide housing 20, the mounting housing 30 with the smoke guide housing 20, and the cover housing 40 with the mounting housing 30. This ensures a stable and reliable connection between the components. The assembly of this easy-to-assemble smoke sensor 100 does not require additional tools or materials, greatly simplifying the assembly process and improving the assembly efficiency of the smoke sensor. At the same time, the mounting cavity formed by the cover housing 40 and the mounting housing 30 provides a stable installation environment for the sensing module 50, effectively protecting it from interference and damage from external factors, and extending its service life.

[0038] The following text, combined with Figures 1 to 6 The above-mentioned easy-to-assemble smoke sensor 100 will be further described.

[0039] like Figures 1 to 2As shown, the smoke guide shell 20 includes an end cap 23, a positioning post 24, and a hook 25. The end cap 23 has a receiving cavity 21 and a smoke inlet 22. The positioning post 24 is located at the edge of the end cap 23. The fixed shell 10 has a rotating groove 11 that engages with the positioning post 24. The hook 25 is located in the receiving cavity 21 and engages with the mounting shell 30. By using the positioning post 24 of the smoke guide shell 20 to engage with the rotating groove 11 of the fixed shell 10, quick positioning and engagement between the fixed shell 10 and the smoke guide shell 20 are achieved. The connection between the two can be completed by rotating the fixed shell 10, which is simple to operate and improves assembly efficiency. The hook 25 is located in the receiving cavity 21 and engages with the mounting shell 30, so that the mounting shell 30 can be stably installed in the receiving cavity 21 of the smoke guide shell 20, ensuring the accurate position of the mounting shell 30 and providing a stable foundation for the subsequent installation of the cover 40 and the sensing module 50.

[0040] To improve the accuracy and reliability of sensor detection, such as Figures 3 to 4 As shown, the mounting housing 30 includes a base shell 31, a surrounding wall 32, and a fastener 33. The base shell 31 and the surrounding wall 32 form a limiting groove. The fastener 33 is set in the limiting groove and is engaged with the base shell 31. The sensing module 50 is embedded in the limiting groove and is engaged with the fastener 33. By using the method of the base shell 31 and the surrounding wall 32 of the mounting housing 30 to form a limiting groove, an accurate installation position is provided for the sensing module 50, which is convenient for the positioning and installation of the sensing module 50. By setting the fastener 33 in the limiting groove and engaging with the base shell 31, the sensing module 50 can be firmly fixed in the limiting groove, preventing the sensing module 50 from shaking or shifting during the operation of the sensor, ensuring the stability of the sensing module 50, and achieving the purpose of improving the accuracy and reliability of sensor detection.

[0041] To further improve the stability of the sensor module 50 installation, such as Figures 5 to 6 As shown, the fastener 33 includes an inlay portion 331 and a snap-fit ​​portion 332. The inlay portion 331 snaps into the base shell 31, and the snap-fit ​​portion 332 snaps into the sensing module 50. By using the inlay portion 331 of the fastener 33 to snap into the base shell 31, the connection strength between the fastener 33 and the base shell 31 is enhanced, allowing the fastener 33 to be stably installed in the limiting groove. The snap-fit ​​portion 332 snaps into the sensing module 50, which can accurately limit and fix the sensing module 50, ensuring that the sensing module 50 can be accurately positioned during installation and will not loosen due to vibration or other factors during use, thereby further improving the stability of the installation of the sensing module 50.

[0042] To ensure that the card firmware 33 can reliably secure the sensing module 50, such as Figures 5 to 6As shown, the base shell 31 is provided with a groove 311 that connects to the limiting groove. The groove 311 engages with the inlay part 331. By engaging the groove 311 on the base shell 31 with the inlay part 331 of the fastener 33, the fastener 33 is provided with clear installation guidance and positioning, enabling the fastener 33 to be installed quickly and accurately on the base shell 31, thus improving the installation accuracy of the fastener 33. At the same time, this engagement method increases the contact area between the fastener 33 and the base shell 31, further enhancing the connection stability between the two, and enabling the fastener 33 to reliably fix the sensing module 50.

[0043] To make the card connection process smoother, such as Figures 5 to 6 As shown, the fastener 33 also includes a spring piece 333 and a protrusion 334 connecting the inlay part 331. The inlay part 331 is provided with a movable groove 335 corresponding to the position of the spring piece 333. The base shell 31 is provided with a groove 312 that cooperates with the protrusion 334. The spring piece 333 on the fastener 33 has a certain elasticity. When the fastener 33 is installed, the spring piece 333 can undergo elastic deformation, so that the protrusion 334 can be smoothly inserted into the groove 312 of the base shell 31. When the protrusion 334 reaches the position of the groove 312, the spring piece 333 returns to its original shape, fixing the protrusion 334 in the groove 312. This realizes quick engagement and disengagement between the fastener 33 and the base shell 31, improving the convenience of assembly and maintenance. The movable groove 335 provides space for the movement of the spring piece 333, ensuring that the spring piece 333 can play its elastic role normally, so as to make the engagement process smoother.

[0044] To reduce time wastage and component damage during installation, such as Figures 5 to 6 As shown, the base shell 31 is provided with a guide surface 313, which gradually expands in the direction away from the groove 312. The guide surface 313 on the base shell 31 can play a guiding role during the installation of the fastener 33. When the protrusion 334 of the fastener 33 approaches the base shell 31, the guide surface 313 guides the protrusion 334 to move in the correct direction, reducing the installation difficulty and improving the installation efficiency. The gradually expanding design of the guide surface 313 makes it easier for the protrusion 334 to be aligned with the groove 312, thereby effectively reducing the time wastage and component damage caused by alignment difficulties during the installation process.

[0045] To further improve the convenience and accuracy of installation, such as Figures 5 to 6 As shown, the fastener 33 is also provided with an inclined surface 336. The inclined surface 336 is located on the side of the protrusion 334 near the groove 312 and gradually tapers towards the groove 312. By using the method of mutual cooperation between the inclined surface 336 on the fastener 33 and the guide surface 313 of the base shell 31, when the fastener 33 is installed, the inclined surface 336 can guide the protrusion 334 to smoothly enter the groove 312, thereby further improving the convenience and accuracy of installation.

[0046] To improve the assembly efficiency of the casing 40, such as Figures 3 to 4 As shown, the cover 40 includes a housing 43 and a hook block 44. Part of the housing 43 is embedded in the limiting groove and is provided with a clearance hole 42. The hook block 44 is engaged with the side of the enclosure 32 away from the limiting groove. By using the method of partially embedding the housing 43 of the cover 40 into the limiting groove, the housing 43 and the base shell 31 of the mounting shell 30 can be effectively integrated to ensure the accurate positioning of the cover 40. The hook block 44 is engaged with the side of the enclosure 32 away from the limiting groove, realizing the quick engagement between the cover 40 and the mounting shell 30. This allows the cover 40 to be securely installed on the mounting shell 30 without the need for additional fixing parts, effectively simplifying the assembly steps and improving the assembly efficiency of the cover 40.

[0047] To improve the timeliness of fire early warning, such as Figure 4 As shown, the sensing module 50 includes a circuit board 51 and a sensor 52. The circuit board 51 is snapped into the mounting housing 30, and the sensor 52 extends into the receiving cavity 21 through a clearance hole 42. By using the snap-fit ​​method between the circuit board 51 and the mounting housing 30, the circuit board 51 can be stably installed in the mounting cavity, ensuring the stability of the circuit connection. The sensor 52 extending into the receiving cavity 21 through the clearance hole 42 can directly contact the smoke entering the receiving cavity 21, improving the sensing efficiency of the sensor 52 for smoke, enabling the sensor to detect the presence of smoke more quickly, and achieving the purpose of improving the timeliness of fire early warning.

[0048] The easy-to-assemble smoke sensor 100 shown in this utility model is used as follows: During assembly, firstly, the sensing module 50 is embedded into the limiting groove of the mounting shell 30, and the sensing module 50 is fixed by the fastener 33. Next, the housing 43 part of the cover 40 is embedded into the limiting groove, and is engaged with the enclosure 32 by the hook block 44, thus completing the assembly of the cover 40 and the mounting shell 30. Then, the mounting shell 30 is engaged with the smoke guide shell 20 by the hook 25, and the smoke guide shell 20 covers the mounting shell 30, the cover 40 and the sensing module 50. Finally, the fixing shell 10 is engaged with the smoke guide shell 20 by the positioning post 24, thus completing the assembly of the entire smoke sensor. During use, smoke enters the receiving cavity 21 of the smoke guide shell 20 through the smoke inlet 22, and then enters the mounting cavity through the clearance hole 42 of the cover 40, contacting the sensor 52 of the sensing module 50. The sensor 52 transmits the sensed smoke signal to the circuit board 51, and the circuit board 51 processes it and issues a corresponding alarm signal.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An easy-to-assemble smoke sensor, characterized in that, include: The system comprises a fixed housing, a smoke guide housing, a mounting housing, a cover housing, and a sensing module. The fixed housing is snapped into the smoke guide housing. The smoke guide housing has a receiving cavity and a smoke inlet communicating with the receiving cavity. The mounting housing and the cover housing are both disposed within the receiving cavity. The mounting housing is snapped into the smoke guide housing, and the cover housing is snapped into the mounting housing, together forming a mounting cavity. The cover housing has a clearance hole communicating with the mounting cavity. The clearance hole communicates with the receiving cavity. The sensing module is installed within the mounting cavity and extends through the clearance hole into the receiving cavity.

2. The easily assembled smoke sensor according to claim 1, characterized in that, The mounting housing includes a base shell, a surrounding wall, and a fastener. The base shell and the surrounding wall form a limiting groove. The fastener is disposed in the limiting groove and engages with the base shell. The sensing module is embedded in the limiting groove and engages with the fastener.

3. The easily assembled smoke sensor according to claim 2, characterized in that, The fastener includes an inlay part and a snap-fit ​​part. The inlay part snaps into the base shell, and the snap-fit ​​part snaps into the sensing module.

4. The easily assembled smoke sensor according to claim 3, characterized in that, The base shell is provided with a groove that communicates with the limiting groove, and the groove engages with the inlay part.

5. The easy-to-assemble smoke sensor according to claim 3, characterized in that, The fastener also includes a spring and a protrusion connecting the inlay part. The inlay part is provided with a movable groove corresponding to the position of the spring, and the base shell is provided with a groove that cooperates with the protrusion.

6. The easy-to-assemble smoke sensor according to claim 5, characterized in that, The base shell is provided with a guide surface, which gradually expands in the direction away from the groove.

7. The easily assembled smoke sensor according to claim 5, characterized in that, The fastener also has an inclined surface, which is located on the side of the protrusion near the groove and gradually tapers towards the groove.

8. The easily assembled smoke sensor according to claim 2, characterized in that, The cover includes a housing and a hook block. A portion of the housing is embedded in the limiting groove and is provided with the clearance hole. The hook block is engaged with the side of the enclosure wall opposite to the limiting groove.

9. The easily assembled smoke sensor according to claim 1, characterized in that, The sensing module includes a circuit board and a sensor. The circuit board is snapped into the mounting housing, and the sensor extends through the clearance hole into the receiving cavity.

10. The easily assembled smoke sensor according to claim 1, characterized in that, The smoke guide shell includes an end cap, a positioning post, and a hook. The end cap has the receiving cavity and the smoke inlet. The positioning post is located at the edge of the end cap. The fixing shell has a rotating groove that engages with the positioning post. The hook is located in the receiving cavity and engages with the mounting shell.

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