Embedded smoke detector

Abstract

The invention relates to the technical field of smoke detectors, and particularly discloses an embedded smoke detector, which comprises a top plate, the lower surface of the top plate is fixedly connected with a fixed shell, the bottom of the inner surface of the fixed shell is fixedly connected with a bottom plate, the middle of the lower surface of the top plate is fixedly connected with a mounting seat, and the middle of the lower surface of the mounting seat is fixedly connected with a sensor body. The inner surface of the bottom plate is fixedly connected with a protection assembly used for protecting the sensor body. The four shielding plates are in a tightly attached state in the mounting bin and can shield and protect the protective shell and the sensor body, so that when the smoke sensing alarm is transported and mounted, effective protection can be performed, the protective shell and the filter screen are prevented from being damaged, the service life of the smoke sensing detector is prolonged, and the cost is reduced. And the rotating annular plate can pull the four shielding plates to synchronously move outwards through the four hinge rods, so that the mounting bin can be quickly opened, and the smoke detector can be used.

Description

Technical Field

[0001] The invention relates to the technical field of smoke detectors, and in particular discloses an embedded smoke detector. Background Art

[0002] In the field of fire protection, smoke detectors are an effective means of preventing fires and are widely used in various occasions such as restaurants, hotels, teaching buildings, office buildings, etc. Smoke detectors use ionization smoke sensors inside. Ionization smoke sensors are advanced, stable and reliable sensors that are widely used in various fire alarm systems. However, existing wireless sensors are not easy to install and disassemble. When replacement or maintenance is required, a lot of manpower, material resources and construction period are required, making the installation of wireless smoke detectors time-consuming and labor-intensive, which is not conducive to the promotion and use of wireless smoke detectors.

[0003] Chinese patent CN213241406U discloses a wireless smoke detector. During use, the smoke detector body is conveniently engaged in the card slot by a card block, so that the smoke detector body and the base are connected, and the smoke detector body is conveniently installed and fixed on the base by a threaded groove and a fixing bolt, which solves the problem that the existing wireless smoke detector is not convenient to install and disassemble, affecting the installation efficiency of the wireless smoke detector. However, in actual use, the filter screen and the shell of the air inlet of the above-mentioned smoke detector are directly exposed to the outside world, and the filter screen of the smoke detector is easily damaged during installation. When the filter screen is damaged, a large amount of dust will be attached to the surface of the detector, causing the detector to be unable to detect smoke. At the same time, flying insects will enter the interior of the detector and damage its internal parts. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the present invention provides an embedded smoke detector to solve the problem that the filter and shell of the air inlet of the existing smoke detector are directly exposed to the outside world, which may easily damage the filter of the smoke detector during actual installation, causing a large amount of dust to adhere to the surface of the detector, thereby causing the detector to be unable to detect smoke, and at the same time, flying insects may enter the interior of the detector and damage its internal components.

[0005] The technical solution adopted by the present invention to solve its technical problem is: The embedded smoke detector comprises a top plate, a fixed shell is fixedly connected to the lower surface of the top plate, a bottom plate is fixedly connected to the bottom of the inner surface of the fixed shell, a mounting seat is fixedly connected to the middle of the lower surface of the top plate, a sensor body is fixedly connected to the middle of the lower surface of the mounting seat, and a protective component for protecting the sensor body is fixedly connected to the inner surface of the bottom plate; The protection component includes a servo motor fixed on both sides of the lower surface of the top plate, a circular ring plate slidably connected to the inner surface of the fixed shell, and an installation bin fixed to the inner surface of the bottom plate, the output end of the servo motor is fixedly connected to the first gear, the inner surface of the circular ring plate is fixedly connected to the first annular rack, the bottom of the installation bin is slidably connected to four shielding plates, one side of the four shielding plates is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a cylinder, the outer surface of the cylinder is hinged with a hinged rod, and the outer surface of the installation bin is fixedly connected to guide rails at intervals.

[0006] Furthermore, the servo motor is located between the fixed shell and the mounting bin, the cylinder passes through the guide rail, the cylinder and the guide rail are slidably connected, the end of the hinged rod away from the mounting bin is hinged to the bottom of the circular ring plate, the first gear and the first annular rack are meshed, and disassembly and assembly components are provided on both sides of the mounting seat, the mounting bin is connected to a protective shell through the disassembly and assembly components, and the inner surface of the protective shell is provided with a filter assembly for dust prevention.

[0007] Furthermore, the disassembly and assembly assembly includes storage grooves opened on both sides of the mounting seat, two L-shaped grooves symmetrically opened on the outer surface of the protective shell and two mounting rods fixed on the inner surface of the mounting bin, the top of the storage groove is fixedly connected to a first spring, and the bottom of the first spring is fixedly connected to a tightening block.

[0008] Furthermore, the mounting rod is slidably arranged inside the L-shaped groove, the mounting rod passes through the L-shaped groove, the clamping block and the storage groove are slidably connected, the upper surface of the protective shell and the lower surface of the clamping block are in contact with each other, the protective shell and the mounting bin are connected to each other through the L-shaped groove and the mounting rod, and a limiting component is arranged at the bottom of the inner cavity of the L-shaped groove.

[0009] Furthermore, the limiting assembly includes a blocking rod slidably connected to the bottom of the L-shaped groove inner cavity, a second spring is sleeved on the lower part of the outer surface of the blocking rod, and the bottom of the blocking rod is fixedly connected to the limiting plate.

[0010] Furthermore, the top of the second spring is fixedly connected to the outer surface of the protective shell, the bottom of the second spring is fixedly connected to the top of the limiting plate, and a slope is provided on one side of the top of the blocking rod.

[0011] Furthermore, the filter assembly includes a filter groove opened on the inner surface of the protective shell, a driving motor fixed on both sides of the lower surface of the mounting seat and a supporting slide rod slidably connected to both sides of the lower surface of the mounting seat, the output end of the driving motor is fixedly connected to the second gear, the bottom of the supporting slide rod is fixedly connected to the second annular rack, the lower surface of the second annular rack is symmetrically fixedly connected to the plug rod, the inside of the filter groove is slidably connected to the filter, the inner surface of the filter groove is evenly provided with air inlets, and the upper surface of the filter is symmetrically fixedly connected to a connecting sleeve.

[0012] Further, the bottom of the insertion rod extends into the interior of the connecting sleeve, the second gear meshes with the second annular rack, and a plurality of ash receiving components are spacedly arranged on the outer surface of the protective shell.

[0013] Further, the ash receiving component includes a fixed U-shaped plate fixedly spaced on the outer surface of the protective shell. An insertion block is slidably connected inside the fixed U-shaped plate. One side of the insertion block is fixedly connected to an ash receiving bin. A fixing rod is slidably connected to the upper surface of the fixed U-shaped plate.

[0014] Further, a magnet is fixedly connected to the bottom of the fixing rod. A magnet groove is formed at the top of the inner cavity of the fixed U-shaped plate. The fixing rod penetrates through the magnet groove. The fixed U-shaped plate is made of metallic iron.

[0015] The beneficial effects of the present invention are as follows: 1. By setting the protection component in the present invention, the four shielding plates are in a tightly fitting state inside the installation bin. The four shielding plates can shield and protect the protective shell and the sensor body. Thus, when transporting and installing the smoke detector, effective protection can be provided to prevent damage to the protective shell and the filter screen, improving the service life of the smoke detector. Moreover, the rotating circular ring plate can pull the four shielding plates to move outward synchronously through the four hinge rods, and then the installation bin can be quickly opened to use the smoke detector.

[0016] 2. By setting the disassembly and assembly component in the present invention, the installation rod can be slid out of the L-shaped groove, and then the protective shell can be removed from below the installation seat, exposing the sensor body to the outside. The sensor body can be quickly repaired and cleaned, effectively extending the service life of the sensor body. Compared with the traditional screw fixation, damage inside the screw hole and the situation of the screw slipping during screwing can be effectively avoided, and the protective shell can be effectively fixed.

[0017] 3. By setting the filter screen component in the present invention, the driving motor is turned on to drive the filter screen to perform circular motion. When the filter screen rotates half a circle, the area with attached dust can be driven away from the air inlet, and the area without attached dust can be rotated to the air inlet. Thus, the filter screen without adhered dust can be used without disassembling the protective shell, reducing the number of times of replacing and disassembling the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a structural sectional view of the present invention; Figure 3 is a schematic structural diagram of the top plate, the fixed outer shell and the protection component of the present invention; Figure 4Cross-sectional structure sectional view of the protection component of the present invention; Figure 5 Structural sectional view of the shielding plate, installation bin, disassembly and assembly component, filter component, protective shell, mounting seat and sensor body of the present invention; Figure 6 is Figure 5 Enlarged structural schematic diagram at position A in Figure 7 Structural schematic diagram of the L-shaped groove, mounting rod, filter screen, air inlet, ash receiving component, protective shell and mounting seat of the present invention; Figure 8 Cross-sectional structure sectional view of the L-shaped groove, filter component and protective shell of the present invention; Fig. 9 Longitudinal sectional structure schematic diagram of the L-shaped groove, mounting rod, limiting component and protective shell of the present invention; Fig.10 Longitudinal sectional structure schematic diagram of the L-shaped groove, limiting component and protective shell of the present invention; Fig.11 Cross-sectional structure sectional view of the air inlet, ash receiving component, filter screen groove and protective shell of the present invention.

[0019] In the figure: 1. Top plate; 2. Fixed outer shell; 3. Bottom plate; 4. Protection component; 41. Servo motor; 42. Ring plate; 43. First gear; 44. Shielding plate; 45. Disassembly and assembly component; 451. Storage groove; 452. First spring; 453. Tightening block; 454. L-shaped groove; 455. Mounting rod; 456. Limiting component; 4561. Stop rod; 4562. Second spring; 4563. Limiting plate; 46. Installation bin; 47. Guide rail; 48. Hinge rod; 49. Connecting plate; 410. Cylinder; 411. First annular rack; 5. Filter component; 51. Filter screen; 52. Second gear; 53. Driving motor; 54. Second annular rack; 55. Support slide bar; 56. Air inlet; 57. Ash receiving component; 571. Ash receiving bin; 572. Fixed U-shaped plate; 573. Insert block; 574. Fixed rod; 58. Connecting sleeve; 59. Insert rod; 510. Filter screen groove; 6. Protective shell; 7. Mounting seat; 8. Sensor body. Detailed implementation manners

[0020] The present invention will be specifically described and illustrated below with reference to the accompanying drawings.

[0021] Embodiment 1 As Figure 1-11As shown, the embedded smoke detector comprises a top plate 1, a fixed shell 2 is fixedly connected to the lower surface of the top plate 1, a bottom plate 3 is fixedly connected to the bottom of the inner surface of the fixed shell 2, a mounting seat 7 is fixedly connected to the middle of the lower surface of the top plate 1, and a sensor body 8 is fixedly connected to the middle of the lower surface of the mounting seat 7, characterized in that a protective component 4 for protecting the sensor body 8 is fixedly connected to the inner surface of the bottom plate 3; like Figure 2-4 As shown, the protection component 4 includes a servo motor 41 fixed on both sides of the lower surface of the top plate 1, a circular plate 42 slidably connected to the inner surface of the fixed shell 2 and a mounting bin 46 fixed to the inner surface of the bottom plate 3, the output end of the servo motor 41 is fixedly connected to the first gear 43, the inner surface of the circular plate 42 is fixedly connected to the first annular rack 411, the bottom of the mounting bin 46 is slidably connected to four shielding plates 44, one side of the four shielding plates 44 is fixedly connected to a connecting plate 49, the top of the connecting plate 49 is fixedly connected to a cylinder 410, the outer surface of the cylinder 410 is hinged with a hinge rod 48, and the outer surface of the mounting bin 46 is fixedly connected to a guide rail 47 at intervals.

[0022] The servo motor 41 is located between the fixed shell 2 and the mounting chamber 46, the cylinder 410 passes through the guide rail 47, the cylinder 410 and the guide rail 47 are slidably connected, the end of the hinged rod 48 away from the mounting chamber 46 is hinged to the bottom of the circular ring plate 42, the first gear 43 and the first annular rack 411 are meshed, and disassembly and assembly components 45 are provided on both sides of the inside of the mounting seat 7. The mounting chamber 46 is connected to the protective shell 6 through the disassembly and assembly component 45, and the inner surface of the protective shell 6 is provided with a filter assembly 5 for dust prevention.

[0023] When installing and transporting the smoke detector, the smoke detector may be squeezed and hit by the outside world, which may easily cause damage. Therefore, when installing and transporting the smoke detector, the four shielding plates 44 are in a tightly fitted state inside the installation compartment 46. The four shielding plates 44 can shield and protect the protective shell 6 and the sensor body 8. After the smoke detector is installed, the shielding plates 44 need to be opened to allow the sensor body 8 to work normally. At this time, the servo motor 41 drives the first gear 43 to rotate, and the first gear 43 drives the first annular rack 411 to rotate simultaneously. The first annular rack 411 drives the annular plate 42 to rotate inside the fixed shell 2, and the annular plate 42 drives the four hinged rods 48 to pull the cylinder 410 to slide inside the guide rail 47. The cylinder 410 moves outward inside the guide rail 47, and drives the shielding plate 44 to slide away from each other inside the installation bin 46 through the connecting plate 49, thereby exposing the protective shell 6 to the outside world; on the contrary, the four shielding plates 44 can fit tightly, thereby achieving effective protection for the smoke alarm during transportation and installation, preventing damage to the protective shell 6 and the filter 51, and increasing the service life of the smoke detector.

[0024] like Figure 5-9 As shown, the disassembly and assembly component 45 includes storage grooves 451 opened on both sides of the mounting seat 7, two L-shaped grooves 454 symmetrically opened on the outer surface of the protective shell 6 and two mounting rods 455 fixed on the inner surface of the mounting bin 46, and the top of the storage groove 451 is fixedly connected to the first spring 452, and the bottom of the first spring 452 is fixedly connected to the tightening block 453.

[0025] The mounting rod 455 is slidably arranged inside the L-shaped groove 454, and the mounting rod 455 passes through the L-shaped groove 454. The tightening block 453 and the storage groove 451 are slidably connected. The upper surface of the protective shell 6 and the lower surface of the tightening block 453 are in contact with each other. The protective shell 6 and the mounting bin 46 are connected to each other through the L-shaped groove 454 and the mounting rod 455. A limiting component 456 is arranged at the bottom of the inner cavity of the L-shaped groove 454.

[0026] After a period of use, the internal part of the smoke detector needs to be inspected. The smoke detector is mainly fixed by screws, but because the shell of the smoke detector is mainly made of plastic, the screw hole is easily damaged after multiple rotations inside the screw hole, resulting in thread slippage and the screw cannot be fixed; Therefore, when the sensor body 8 needs to be inspected and repaired, the protective shell 6 is rotated to drive the two L-shaped grooves 454 to rotate synchronously. The L-shaped groove 454 includes a horizontal transverse groove and a vertical vertical groove. At this time, the mounting rod 455 slides relatively in the transverse groove of the L-shaped groove 454. When the mounting rod 455 moves to the vertical groove of the L-shaped groove 454, the protective shell 6 can be moved downward, so that the mounting rod 455 slides in the vertical groove of the L-shaped groove 454, and the protective shell 6 is removed from the bottom of the mounting seat 7 to expose the sensor body 8 to the outside world. At this time, the sensor body 8 can be quickly inspected and cleaned, effectively extending the service life of the sensor body 8. Compared with traditional screw fixing, it can effectively avoid damage to the inside of the screw hole and the problem of screw thread slippage when twisting, and can effectively fix the protective shell 6. At the same time, disassembly and assembly are faster and easier to operate.

[0027] like Figure 9-10 As shown, the limiting assembly 456 includes a blocking rod 4561 slidably connected to the bottom of the inner cavity of the L-shaped groove 454, a second spring 4562 is sleeved on the lower part of the outer surface of the blocking rod 4561, and the bottom of the blocking rod 4561 is fixedly connected to a limiting plate 4563.

[0028] The top of the second spring 4562 is fixedly connected to the outer surface of the protective shell 6 , the bottom of the second spring 4562 is fixedly connected to the top of the limiting plate 4563 , and a slope is provided on one side of the top of the blocking rod 4561 .

[0029] Although the L-shaped groove 454 and the mounting rod 455 cooperate with each other, the protective shell 6 can be quickly installed. However, since the mounting rod 455 is not limited inside the L-shaped groove 454, the mounting rod 455 is easy to slide inside the L-shaped groove 454, which can easily cause the protective shell 6 to fall off the mounting rod 455. Therefore, a blocking rod 4561 is provided for sliding inside the L-shaped groove 454. When the mounting rod 455 moves toward the inside of the L-shaped groove 454, it will first contact and squeeze the blocking rod 4561 with the hypotenuse, push the blocking rod 4561 downward, and stretch the second spring 4562 through the limiting plate 4563. When the mounting rod 455 passes through the blocking rod 4561, the blocking rod 4561 is quickly reset under the rebound action of the second spring 4562 to block and limit the mounting rod 455, thereby preventing the mounting rod 455 from sliding inside the L-shaped groove 454 and preventing the protective shell 6 from falling off the mounting rod 455.

[0030] like Figure 5-8 and Fig.11 As shown, the filter assembly 5 includes a filter groove 510 opened on the inner surface of the protective shell 6, a driving motor 53 fixed on both sides of the lower surface of the mounting seat 7 and a supporting slide bar 55 slidably connected to both sides of the lower surface of the mounting seat 7, the output end of the driving motor 53 is fixedly connected to the second gear 52, the bottom of the supporting slide bar 55 is fixedly connected to the second annular rack 54, the lower surface of the second annular rack 54 is symmetrically fixedly connected to the insertion rod 59, the inside of the filter groove 510 is slidably connected to the filter 51, the inner surface of the filter groove 510 is evenly provided with air inlets 56, and the upper surface of the filter 51 is symmetrically fixedly connected to the connecting sleeve 58.

[0031] The bottom of the insertion rod 59 extends to the inside of the connecting sleeve 58, the second gear 52 is meshed with the second annular rack 54, and a plurality of dust receiving components 57 are arranged at intervals on the outer surface of the protective shell 6.

[0032] When the smoke detector is in use, a large amount of dust will adhere to the surface of the filter screen 51. If the dust is not cleaned in time, it will cause the filter holes of the filter screen 51 to be blocked, and then the smoke cannot enter the interior of the protective shell 6, and thus cannot be detected by the sensor body 8. Therefore, after using it for a period of time, the driving motor 53 is turned on to drive the second gear 52 to rotate. The second gear 52 drives the second annular rack 54 to rotate. The second annular rack 54 drives the filter screen 51 to perform a circular motion through the mutual cooperation of the insertion rod 59 and the connecting sleeve 58. When the filter screen 51 rotates half a turn, the area with attached dust can be driven away from the air inlet 56, and the area without attached dust can be rotated to the air inlet 56, so that the filter screen 51 without attached dust can be used without disassembling the protective shell 6, reducing the number of times of replacing and disassembling the filter screen 51. When all the areas on the outer surface of the filter screen 51 have been used up, the protective shell 6 can be disassembled to replace the filter screen 51. By disengaging the insertion rod 59 from the inside of the connecting sleeve 58, the protective shell 6 and the filter screen 51 can be completely removed to replace the filter screen 51.

[0033] As Figure 7 and Fig.11 shown, the ash receiving assembly 57 includes a fixed U-shaped plate 572 fixedly spaced on the outer surface of the protective shell 6. A plug block 573 is slidably connected inside the fixed U-shaped plate 572. One side of the plug block 573 is fixedly connected to an ash receiving bin 571. A fixed rod 574 is slidably connected to the upper surface of the fixed U-shaped plate 572.

[0034] The bottom of the fixed rod 574 is fixedly connected with a magnet. A magnet groove is opened at the top of the inner cavity of the fixed U-shaped plate 572. The fixed rod 574 penetrates through the magnet groove. The material of the fixed U-shaped plate 572 is metallic iron.

[0035] When the rotating filter screen 51 drives the area with attached dust away from the air inlet 56, due to the certain thickness of the dust on the surface of the filter screen 51, the dust will contact the inner edge of the air inlet 56 during rotation, and the inner edge of the air inlet 56 will scrape off the dust on the outer surface of the filter screen 51, and the dust will fall on the indoor tabletop and people's hair. Therefore, through the setting of the ash receiving bin 571, when the filter screen 51 rotates inside the filter screen groove 510, the dust on the surface of the filter screen 51 will be scraped off by the inner edge of the air inlet 56 and fall into the interior of the ash receiving bin 571. All the dust is collected by the ash receiving bin 571, preventing the dust from falling on the indoor tabletop and ensuring the cleanliness of the indoor environment. When the sensor body 8 is overhauled later, the ash receiving bin 571 is pulled to drive the magnet to move into the magnet groove, and the fixed rod 574 is moved away from in front of the plug block 573. At this time, the ash receiving bin 571 is pulled to drive the plug block 573 to move out of the inside of the fixed U-shaped plate 572, and the ash receiving bin 571 can be disassembled from the outer surface of the protective shell 6 to clean the dust inside it.

[0036] Working principle and process: When the smoke alarm is in normal use, the first gear 43 is driven to rotate by the servo motor 41, and the first gear 43 drives the first annular rack 411 to rotate synchronously, and the first annular rack 411 drives the annular plate 42 to rotate inside the fixed shell 2, and the annular plate 42 drives the four hinged rods 48 to pull the cylinder 410 to slide inside the guide rail 47, and the cylinder 410 moves outward inside the guide rail 47, and drives the shielding plates 44 to move away from each other through the connecting plate 49, so that the protective shell 6 is exposed to the outside world, and vice versa, the four shielding plates 44 can be tightly fitted, so as to achieve effective protection during the transportation and installation of the smoke alarm, prevent the protective shell 6 and the filter 51 from being damaged, and improve the service life of the smoke detector; when the protective shell 6 needs to be removed, the protective shell 6 is rotated to drive the two L-shaped grooves 454 to rotate synchronously, and the installation rod 455 slides relatively in the horizontal groove of the L-shaped groove 454. When rod 455 moves into the vertical groove of L-shaped groove 454, protective shell 6 can be moved downward, so that mounting rod 455 slides in the vertical groove of L-shaped groove 454, and protective shell 6 is removed from under mounting seat 7. At this time, sensor body 8 can be quickly inspected and cleaned, effectively extending the service life of sensor body 8; when installing protective shell 6, mounting rod 455 moves in the transverse groove of L-shaped groove 454, and will first contact with the hypotenuse of blocking rod 4561 and squeeze blocking rod 4561, push blocking rod 4561 downward, stretch second spring 4562 through limiting plate 4563, when mounting rod 455 passes blocking rod 4561, blocking rod 4561 is quickly reset under the rebound action of second spring 4562 to block and limit mounting rod 455, prevent mounting rod 455 from sliding in the transverse groove of L-shaped groove 454, and prevent protective shell 6 from falling off mounting rod 455; When there is a lot of dust adhering to the filter holes of the filter 51, turn on the driving motor 53 to drive the second gear 52 to rotate, and the second gear 52 drives the second annular rack 54 to rotate. The second annular rack 54 drives the filter 51 to perform circular motion through the cooperation of the insertion rod 59 and the connecting sleeve 58. When the filter 51 rotates by half a circle, the area where dust is adhered can be driven away from the air inlet 56, and the area where dust is not adhered can be rotated to the air inlet 56 for use, so that the filter 51 without dust adhering can be used without removing the protective shell 6, thereby reducing the number of times the filter 51 is replaced and disassembled; at the same time, the dust collecting bin 571 can collect dust on the outer surface of the filter 51 to prevent dust from falling into the room and polluting the indoor environment.

Claims

1. An embedded smoke detector, comprising a top plate (1), a fixed housing (2) fixedly connected to the lower surface of the top plate (1), a bottom plate (3) fixedly connected to the bottom of the inner surface of the fixed housing (2), a mounting seat (7) fixedly connected to the middle of the lower surface of the top plate (1), and a sensor body (8) fixedly connected to the middle of the lower surface of the mounting seat (7), characterized in that: A protection component (4) for protecting a sensor body (8) is fixedly connected to the inner surface of the base plate (3); The protection component (4) comprises a servo motor (41) fixed on both sides of the lower surface of the top plate (1), a circular plate (42) slidably connected to the inner surface of the fixed shell (2), and a mounting chamber (46) fixed to the inner surface of the bottom plate (3), wherein the output end of the servo motor (41) is fixedly connected to a first gear (43), the inner surface of the circular plate (42) is fixedly connected to a first annular rack (411), the bottom of the mounting chamber (46) is slidably connected to four shielding plates (44), one side of each of the four shielding plates (44) is fixedly connected to a connecting plate (49), the top of the connecting plate (49) is fixedly connected to a cylinder (410), the outer surface of the cylinder (410) is hinged to a hinge rod (48), and the outer surface of the mounting chamber (46) is fixedly connected to a guide rail (47) at intervals.

2. The embedded smoke detector according to claim 1, characterized in that: The servo motor (41) is located between the fixed housing (2) and the mounting chamber (46); the cylinder (410) passes through the guide rail (47); the cylinder (410) and the guide rail (47) are slidably connected; one end of the hinged rod (48) away from the mounting chamber (46) is hinged to the bottom of the circular ring plate (42); the first gear (43) and the first annular rack (411) are meshed; disassembly and assembly components (45) are provided on both sides of the interior of the mounting seat (7); the mounting chamber (46) is connected to a protective shell (6) via the disassembly and assembly component (45); and a filter assembly (5) for dust prevention is provided on the inner surface of the protective shell (6).

3. The embedded smoke detector according to claim 2, characterized in that: The disassembly assembly (45) comprises storage grooves (451) provided on both sides of the interior of the mounting seat (7), two L-shaped grooves (454) symmetrically provided on the outer surface of the protective shell (6), and two mounting rods (455) fixed on the inner surface of the mounting bin (46); the top of the storage groove (451) is fixedly connected to a first spring (452), and the bottom of the first spring (452) is fixedly connected to a tightening block (453).

4. The embedded smoke detector according to claim 3, characterized in that: The mounting rod (455) is slidably arranged inside the L-shaped groove (454), the mounting rod (455) passes through the L-shaped groove (454), the abutting block (453) and the storage groove (451) are slidably connected, the upper surface of the protective shell (6) and the lower surface of the abutting block (453) are in contact with each other, the protective shell (6) and the mounting bin (46) are connected to each other via the L-shaped groove (454) and the mounting rod (455), and a limit assembly (456) is arranged at the bottom of the inner cavity of the L-shaped groove (454).

5. The embedded smoke detector according to claim 4, characterized in that: The limiting assembly (456) comprises a blocking rod (4561) slidably connected to the bottom of the inner cavity of the L-shaped groove (454), a second spring (4562) is sleeved on the lower part of the outer surface of the blocking rod (4561), and the bottom of the blocking rod (4561) is fixedly connected to the limiting plate (4563).

6. The embedded smoke detector according to claim 5, characterized in that: The top of the second spring (4562) is fixedly connected to the outer surface of the protective shell (6), the bottom of the second spring (4562) is fixedly connected to the top of the limit plate (4563), and one side of the top of the blocking rod (4561) is provided with an inclined surface.

7. The embedded smoke detector according to claim 2, characterized in that: The filter screen assembly (5) includes a filter screen groove (510) formed on the inner surface of the protective shell (6), drive motors (53) fixed to both sides of the lower surface of the mounting seat (7), and support sliding rods (55) slidably connected in cooperation to both sides of the lower surface of the mounting seat (7). The output end of the drive motor (53) is fixedly connected to a second gear (52), the bottom of the support sliding rod (55) is fixedly connected to a second annular rack (54), the lower surface of the second annular rack (54) is symmetrically fixedly connected with insertion rods (59), a filter screen (51) is slidably connected inside the filter screen groove (510), air inlets (56) are evenly formed on the inner surface of the filter screen groove (510), and connecting sleeves (58) are symmetrically fixedly connected to the upper surface of the filter screen (51).

8. The embedded smoke detector according to claim 7, characterized in that: The bottom of the insertion rod (59) extends into the inside of the connecting sleeve (58), the second gear (52) meshes with the second annular rack (54), and a plurality of dust receiving components (57) are spaced apart on the outer surface of the protective shell (6).

9. The embedded smoke detector according to claim 8, characterized in that: The dust receiving component (57) includes a fixed U-shaped plate (572) spaced and fixed on the outer surface of the protective shell (6), an insertion block (573) is slidably connected inside the fixed U-shaped plate (572), a dust receiving bin (571) is fixedly connected to one side of the insertion block (573), and a fixed rod (574) is slidably connected to the upper surface of the fixed U-shaped plate (572).

10. The embedded smoke detector according to claim 9, characterized in that: A magnet is fixedly connected to the bottom of the fixed rod (574), a magnet groove is formed at the top of the inner cavity of the fixed U-shaped plate (572), the fixed rod (574) penetrates through the magnet groove, and the fixed U-shaped plate (572) is made of metallic iron.

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