Fire-fighting smoke sensing detector

Abstract

The invention discloses a fire-fighting smoke sensing detection instrument, and belongs to the technical field of chemical monitoring analysis, the fire-fighting smoke sensing detection instrument comprises a combined shell and a combined mounting seat, a smoke detector and an indicating lamp are fixedly mounted in the combined shell, and the detection end of the smoke detector is located on the outer side of the combined shell; through the arrangement of the press-in assembly and the side limiting assembly, during installation, the device only needs to be directly pressed and installed between the two installation plates of the installation frame, the effect of extrusion and immediate installation can be rapidly achieved through the linkage effect, meanwhile, the effect of simultaneous positioning of multiple points is achieved, the installation and positioning rapidness of the structure is improved, and the installation efficiency is improved. Meanwhile, the overall structure is designed into a split type, disassembly and inspection can be conducted regularly, the overall structure does not need to be disassembled, the disassembly process is convenient and rapid, and after inspection, the combined shell and the combined installation base are rapidly assembled, the connecting assembly is rotated, and clamping is conducted again.

Description

Technical Field

[0001] This invention belongs to the field of chemical monitoring and analysis technology, and in particular relates to fire smoke detection instruments. Background Technology

[0002] Chemical monitoring and analysis, as the name suggests, is the process of monitoring and analyzing gases, liquids, or solids. Different chemical monitoring and analysis methods will yield different results and have different applications. For example, in the field of fire protection, smoke detection instruments are needed to monitor and analyze smoke to prevent fires and protect people's lives and property.

[0003] Chinese patent disclosure (CN201820735310.1) discloses a fire smoke detector. This multifunctional fire smoke detector has smoke ionization sensing plates evenly distributed on both the left and right ends inside the main body of the device. When in use, the smoke ionization sensing plates are equipped with sensing films in the middle of their interior sections, and these films are fixedly connected to the plates via adhesive. Because these sensing films have the characteristic of accurately sensing smoke properties, the device can definitively identify smoke in actual use, even when encountering gases similar to smoke. This solves the problem of previous fire smoke detectors being easily affected by weather conditions, reducing their stability and effectiveness. It improves the stability and effectiveness of this device in foggy weather, enhancing its overall effectiveness and reliability. Additionally, on the upper left and right ends inside the sleeve... The device is equipped with two electro-optic ionization detectors on each side. Both detectors are made of metal and are enclosed in a protective frame. Because these detectors emit light for detection, the device can accurately detect locations at considerable distances. Furthermore, the emitted light is unaffected by humidity, further enhancing the device's versatility and reliability, overcoming the shortcomings of previous fire smoke detectors in terms of accuracy. However, this fire smoke detector lacks a built-in structure for quick and stable installation. Installation requires additional structures and equipment, compromising stability. Additionally, the structure is not designed as a modular unit, making disassembly and inspection difficult, and requires further improvement. Summary of the Invention

[0004] The purpose of this invention is to address the problems of current fire smoke detectors not having a built-in structure for quick and stable installation, requiring additional installation structures and equipment, resulting in compromised installation stability, and the fact that fire smoke detectors are not designed as modular units, making disassembly and inspection difficult. Therefore, this invention proposes a fire smoke detector.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fire smoke detector, comprising a combined housing and a combined mounting base, wherein a smoke detector and an indicator light are fixedly installed inside the combined housing, the detection end of the smoke detector is located outside the combined housing, and a side limiting component is rotatably installed inside the combined mounting base for rapid and stable multi-point positioning of the combined mounting base, and a pressing component is provided above the side limiting component for good and stable driving of the side limiting component; The side limiting assembly includes a worm gear sleeve, a limiting rod, and a bearing bracket. The bearing bracket is fixedly installed on the inner wall of the combined mounting base. The worm gear sleeve is rotatably installed inside the bearing bracket. A first limiting stud and a second limiting stud are installed on the internal threads of the worm gear sleeve. The first limiting stud and the second limiting stud have the same diameter and opposite thread directions.

[0006] As a further description of the above technical solution: The limiting rod is fixedly installed on the top inner wall of the combined mounting base. There are two limiting rods. The bottom ends of the two limiting rods are slidably connected to the limiting grooves opened on the top of the first limiting stud and the second limiting stud, respectively. One end of the first limiting stud and the second limiting stud are respectively located in the outlet holes provided on the outer walls of both sides of the combined mounting base.

[0007] As a further description of the above technical solution: The pressing assembly includes a limiting shaft and a worm gear sleeve. A rotating groove is provided on one side of the worm gear sleeve. The limiting shaft is fixedly installed on the inner wall of one side of the combined mounting base. One end of the limiting shaft is rotatably connected to the rotating groove. The worm gear sleeve and the worm sleeve mesh with each other. A push threaded shaft is installed on the internal thread of the worm gear sleeve. One end of the push threaded shaft is located on the outside of the combined mounting base.

[0008] As a further description of the above technical solution: The side cavity of the combined housing is provided with a protective component for the protection of the smoke detector. The protective component includes a protective plate and an inward folding plate. A side spring is fixedly installed on one side of the outer wall of the protective plate, and one end of the side spring is fixedly connected to the inner wall of the cavity of the combined housing.

[0009] As a further description of the above technical solution: The protective plate has a back groove on one side, and an installation shaft is rotatably installed inside the back groove. An outer spring and an inner folding plate are fixedly installed on the outside of the installation shaft. One end of the outer spring is fixedly connected to the side wall of the back groove, and a locking shaft is fixedly installed on the outer wall of one side of the inner folding plate.

[0010] As a further description of the above technical solution: The interior of the combined housing is provided with a horizontally arranged locking component for the stable positioning of the protective component. The locking component includes a return spring and a displacement shaft. The return spring and a side block are fixedly installed on the outside of the displacement shaft. One end of the return spring is fixedly connected to one side inner wall of the combined housing.

[0011] As a further description of the above technical solution: The outer surface of the combined housing is provided with a travel groove, the side block is slidably connected to the travel groove, and a locking piece is fixedly installed on one side outer wall of the side block, the locking piece being in close contact with and pressed against the protective plate.

[0012] As a further description of the above technical solution: The side wall of the combined mounting base is provided with a card slot and a limiting pin hole. A card is fixedly installed on the inner surface of the card slot. A limiting pin is fixedly installed on the side wall of the combined housing. The limiting pin and the limiting pin hole are mutually compatible.

[0013] As a further description of the above technical solution: The combined housing is rotatably mounted with a connecting component for stable and rapid assembly of the combined housing and the combined mounting base. The connecting component includes a rotating head and a rotating rod, with the rotating rod rotatably mounted inside the combined housing.

[0014] As a further description of the above technical solution: The two ends of the rotating rod are respectively fixedly installed with a rotating head and a connecting clip. The rotating head and the connecting clip are both located on the outside of the combined shell. The connecting clip has a locking protrusion on its outside.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by incorporating a pressing component and a side limiting component, the device can be installed between two mounting plates of the mounting frame simply by pressing it into place. The pressing component, when compressed, causes the push threaded shaft to move automatically inward. Due to the internal thread connection between the push threaded shaft and the worm gear sleeve, the push threaded shaft drives the worm gear sleeve to rotate. The rotating worm gear sleeve then drives the worm sleeve of the side limiting component to rotate. The rotating worm sleeve allows the first and second limiting studs, connected internally, to move out simultaneously and engage in the mounting holes of the mounting plate, thus completing the rapid positioning and installation. This achieves immediate installation upon pressing and provides simultaneous positioning at multiple points, improving the ease of installation and positioning. For disassembly, the first and second limiting studs are simply pushed back into the combined mounting base.

[0016] 2. In this invention, by providing a connecting component inside the combined shell, the overall structure is designed as a split type. When it is necessary to inspect the inside of the combined shell, simply rotate the rotating head of the connecting component. The rotating head can drive the connecting clip to rotate, so that the irregular structure of the connecting clip is misaligned with the position of the card. At this time, the combined shell can be directly removed for disassembly and inspection without disassembling the entire structure. Moreover, this disassembly process is convenient and quick. After inspection, the combined shell and the combined mounting base can be quickly assembled, and the connecting component can be rotated to reposition.

[0017] 3. In this invention, by providing a limiting pin on one side of the combined housing and a corresponding limiting pin hole on one side of the combined mounting base, during the reassembly of the combined housing and the combined mounting base, the limiting pin can be aligned with the limiting pin hole first, so that the limiting pin of the combined housing and the limiting pin hole of the combined mounting base are locked together. This can effectively ensure the positional accuracy of the reassembly of the combined housing and the combined mounting base, and can effectively avoid misalignment or deflection during the reassembly of the combined housing and the combined mounting base.

[0018] 4. In this invention, by setting a protective component and a locking component inside the combined housing, if the structure encounters some external impact force during use, the locking component will move inward, and the displacement shaft can drive the side block and the locking piece to move simultaneously. At this time, the protective component loses its limiting function, and the side spring can automatically pop out the protective plate. The protective plate can effectively protect the smoke detector from directional impact, and can provide good protection for the smoke detector, avoiding damage to the smoke detector. It not only has a monitoring function but also a good protection function, thus improving the functionality of the structure.

[0019] 5. In this invention, an automatically deflectable inward-folding plate is provided on one side of the protective plate. After the protective plate pops out, the outer spring loses its restraining effect and can drive the mounting shaft to deflect. At the same time, the inward-folding plate will deflect synchronously. After deflection, the inward-folding plate will form a protruding protective space area on one side of the smoke detector. This allows the protective plate to effectively protect the smoke detector from the side while also providing good frontal protection. Furthermore, each locking shaft can prevent the inward-folding plate from being crushed and provides good support. The design is reasonable and ingenious, achieving multi-faceted protection for the smoke detector and resulting in good performance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a fire smoke detector.

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of a fire smoke detector.

[0022] Figure 3 This is a magnified three-dimensional diagram of the protective components in a fire smoke detector.

[0023] Figure 4 This is a magnified three-dimensional diagram of the protective components in a fire smoke detector, viewed from the side in an explosion.

[0024] Figure 5 This is an enlarged three-dimensional structural diagram of the combined pressing component and side limiting component in a fire smoke detector.

[0025] Figure 6 This is an enlarged, exploded, three-dimensional structural diagram of the side limiting component in a fire smoke detector.

[0026] Figure 7 This is an enlarged structural diagram of point A in a fire smoke detector.

[0027] Figure 8 This is an enlarged structural diagram of point B in a fire smoke detector.

[0028] Figure 9 This is an enlarged three-dimensional structural diagram of the positioning component in a fire smoke detector.

[0029] Figure 10 This is an enlarged, exploded, three-dimensional structural diagram of the locking component in a fire smoke detector.

[0030] Legend: 1. Combined housing; 2. Combined mounting base; 3. Press-in assembly; 31. Limiting shaft; 32. Worm gear sleeve; 33. Push threaded shaft; 34. Rotary groove; 4. Side limiting assembly; 41. First limiting stud; 42. Worm sleeve; 43. Limiting rod; 44. Second limiting stud; 45. Bearing bracket; 5. Connecting assembly; 51. Rotating head; 52. Rotating rod; 53. Connecting clip; 6. Protective assembly; 61. Protective 62. Side spring; 63. Inward folding plate; 64. Back groove; 65. Locking shaft; 66. Mounting shaft; 67. Outer spring; 7. Smoke detector; 8. Indicator light; 9. Limit pin; 10. Limit pin hole; 11. Locking slot; 12. Card; 13. Stroke groove; 14. Locking assembly; 141. Return spring; 142. Side block; 143. Displacement shaft; 144. Locking piece; 145. Shaft hole. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-10 The present invention provides a technical solution: a fire smoke detector, comprising a combined housing 1 and a combined mounting base 2. A smoke detector 7 and an indicator light 8 are fixedly installed inside the combined housing 1. The detection end of the smoke detector 7 is located on the outside of the combined housing 1. A side limiting component 4 is rotatably installed inside the combined mounting base 2 for rapid and stable multi-point positioning of the combined mounting base 2. A pressing component 3 is provided above the side limiting component 4 for good and stable driving of the side limiting component 4.

[0033] The side limiting assembly 4 includes a worm gear sleeve 42, a limiting rod 43, and a bearing bracket 45. The bearing bracket 45 is fixedly installed on the inner wall of the combined mounting base 2. The worm gear sleeve 42 is rotatably installed inside the bearing bracket 45. A first limiting stud 41 and a second limiting stud 44 are threaded onto the internal threads of the worm gear sleeve 42. The first limiting stud 41 and the second limiting stud 44 have the same diameter and opposite thread directions. The limiting rod 43 is fixedly installed on the top inner wall of the combined mounting base 2. Two limiting rods 43 are provided, and the bottom ends of the two limiting rods 43 are respectively connected to the first limiting stud 41. The first limiting stud 41 and the second limiting stud 44 are slidably connected to the limiting groove opened at the top of the second limiting stud 44. One end of the first limiting stud 41 and the second limiting stud 44 are respectively located in the outlet holes provided on the outer walls of the two sides of the combined mounting base 2. The pressing assembly 3 includes a limiting shaft 31 and a worm gear sleeve 32. A rotating groove 34 is provided on one side of the worm gear sleeve 32. The limiting shaft 31 is fixedly installed on the inner wall of one side of the combined mounting base 2. One end of the limiting shaft 31 is rotatably connected to the rotating groove 34. The worm gear sleeve 32 and the worm sleeve 42 mesh with each other. A push thread shaft 33 is installed on the inner thread of the worm gear sleeve 32. One end of the push thread shaft 33 is located on the outer side of the combined mounting base 2.

[0034] The specific implementation method is as follows: When installing the testing instrument, simply press the device directly between the two mounting plates of the mounting bracket. When the pressing component 3 is squeezed, the pushing threaded shaft 33 automatically moves inward. Due to the internal thread connection between the pushing threaded shaft 33 and the worm gear sleeve 32, the pushing threaded shaft 33 will drive the worm gear sleeve 32 to rotate. The rotating worm gear sleeve 32 will drive the worm sleeve 42 of the side limiting component 4 to rotate. The rotating worm sleeve 42 can cause the first limiting stud 41 and the second limiting stud 44 connected to its internal thread to move out at the same time and be inserted into the mounting hole of the mounting plate to complete the quick positioning installation. When disassembling, the first limiting stud 41 and the second limiting stud 44 can be pushed back into the combined mounting base 2.

[0035] A protective component 6 is provided inside the side cavity of the combined housing 1 for protecting the smoke detector 7. The protective component 6 includes a protective plate 61 and an inner folding plate 63. A side spring 62 is fixedly installed on one outer wall of the protective plate 61, and one end of the side spring 62 is fixedly connected to the inner wall of the cavity of the combined housing 1. A back groove 64 is provided on one side of the protective plate 61. An installation shaft 66 is rotatably installed inside the back groove 64. An outer spring 67 and an inner folding plate 63 are fixedly installed outside the installation shaft 66. One end of the outer spring 67 is fixedly connected to the side wall of the back groove 64. A locking shaft 65 is fixedly installed on one outer wall of the inner folding plate 63. The interior of component 1 is horizontally arranged with a locking assembly 14 for stabilizing and limiting the protective assembly 6. The locking assembly 14 includes a return spring 141 and a displacement shaft 143. The return spring 141 and a side block 142 are fixedly installed on the outside of the displacement shaft 143. One end of the return spring 141 is fixedly connected to the inner wall of one side of the combined housing 1. A stroke groove 13 is provided on the outer surface of the combined housing 1. The side block 142 is slidably connected to the stroke groove 13. A locking piece 144 is fixedly installed on the outer wall of one side of the side block 142. The locking piece 144 is in close contact with and presses against the protective plate 61. The inner folding plate 63 is preferably made of a hollow mesh plate, which can prevent collisions without blocking smoke.

[0036] The specific implementation method is as follows: During the use of this structure, if it encounters some external impact force, the locking component 14 will move inward, and the displacement shaft 143 can drive the side block 142 and the locking piece 144 to move simultaneously. At this time, the protective component 6 loses its limiting function, and the side spring 62 can automatically pop out the protective plate 61. The protective plate 61 can effectively protect the smoke detector 7 from directional impact and can provide good protection for the smoke detector 7, avoiding damage to the smoke detector 7. After the protective plate 61 pops out, the outer spring 67 loses its limiting function and can drive the mounting shaft 66 to deflect. At the same time, the inner folding plate 63 will deflect synchronously. After deflection, the inner folding plate 63 will form a protruding protective space area on one side of the smoke detector 7, so that the protective plate 61 can effectively protect the smoke detector 7 from the side and provide good front protection for the smoke detector 7. Moreover, each locking shaft 65 can prevent the inner folding plate 63 from being crushed and provide good support.

[0037] The side wall of the combined mounting base 2 is provided with a card slot 11 and a limiting pin hole 10. A card 12 is fixedly installed on the inner surface of the card slot 11. A limiting pin 9 is fixedly installed on the side wall of the combined housing 1. The limiting pin 9 and the limiting pin hole 10 are mutually compatible.

[0038] The specific implementation method is as follows: During the reassembly of the combined housing 1 and the combined mounting base 2, the limiting pin 9 can be aligned with the limiting pin hole 10 first, so that the limiting pin 9 of the combined housing 1 and the limiting pin hole 10 of the combined mounting base 2 can be locked in place. This can effectively ensure the positional accuracy of the combined housing 1 and the combined mounting base 2 when they are reassembled, and can effectively avoid misalignment or deflection when the combined housing 1 and the combined mounting base 2 are reassembled.

[0039] The connecting component 5 is rotatably installed inside the combined housing 1 for stable and rapid assembly of the combined housing 1 and the combined mounting base 2. The connecting component 5 includes a rotating head 51 and a rotating rod 52. The rotating rod 52 is rotatably installed inside the combined housing 1. The rotating head 51 and the connecting clip 53 are respectively fixedly installed at both ends of the rotating rod 52. The rotating head 51 and the connecting clip 53 are both located on the outside of the combined housing 1. The connecting clip 53 is provided with a locking protrusion on its outside.

[0040] The specific implementation method is as follows: The overall structure is designed as a split type. When it is necessary to inspect the inside of the combined shell 1, simply rotate the rotating head 51 of the connecting component 5. The rotating head 51 can drive the connecting clip 53 to rotate, so that the irregular structure of the connecting clip 53 is misaligned with the position of the card 12. At this time, the combined shell 1 can be directly removed for disassembly and inspection without disassembling the entire structure. Moreover, this disassembly process is convenient and quick. After inspection, the combined shell 1 and the combined mounting base 2 can be quickly assembled. Rotate the connecting component 5 to re-lock the position.

[0041] Working principle: First, install the testing instrument by pressing it directly between the two mounting plates of the mounting bracket. When the pressing component 3 is compressed, the pushing threaded shaft 33 automatically moves inward. Due to the internal thread connection between the pushing threaded shaft 33 and the worm gear sleeve 32, the pushing threaded shaft 33 drives the worm gear sleeve 32 to rotate. The rotating worm gear sleeve 32 drives the worm sleeve 42 of the side limiting component 4 to rotate. The rotating worm sleeve 42 allows the first limiting stud 41 and the second limiting stud 44, which are internally threaded, to move out simultaneously and snap into the mounting holes of the mounting plate, completing the quick positioning installation. For disassembly, the first limiting stud 41... 1. Once the second limiting stud 44 is re-inserted into the combined mounting base 2, the locking assembly 14 will displace inward during use. The displacement shaft 143 will drive the side block 142 and the locking piece 144 to displace simultaneously. At this time, the protective assembly 6 loses its limiting function, and the side spring 62 will automatically eject the protective plate 61. The protective plate 61 can effectively protect the smoke detector 7 from directional impact, providing good protection and preventing damage to the smoke detector 7. After the protective plate 61 is ejected, the outer spring 67 loses its limiting function, which can drive the mounting shaft 66 to deflect and fold inward. The plate 63 will deflect synchronously, and the deflected inward folding plate 63 will form a protruding protective space area on one side of the smoke detector 7. This allows the protective plate 61 to effectively provide lateral protection for the smoke detector 7 while also providing good frontal protection. Furthermore, each locking shaft 65 can prevent the inward folding plate 63 from collapsing under pressure, providing good support. The overall structure is designed as a split type. When it is necessary to inspect the interior of the combined housing 1, simply rotate the rotating head 51 of the connecting component 5. The rotating head 51 can drive the connecting clip 53 to rotate, causing the irregular structure of the connecting clip 53 to be misaligned with the position of the card 12. The combined outer shell 1 can be directly removed for disassembly and inspection without disassembling the entire structure. This disassembly process is convenient and quick. After inspection, the combined outer shell 1 and the combined mounting base 2 can be quickly assembled. The connecting component 5 can be rotated and repositioned. During the reassembly of the combined outer shell 1 and the combined mounting base 2, the limiting pin 9 can be aligned with the limiting pin hole 10 first, so that the limiting pin 9 of the combined outer shell 1 and the limiting pin hole 10 of the combined mounting base 2 can be locked in place. This can effectively ensure the accuracy of the re-fitting position of the combined outer shell 1 and the combined mounting base 2, and can effectively avoid misalignment or deflection when the combined outer shell 1 and the combined mounting base 2 are reassembled.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fire smoke detector, comprising a combined housing (1) and a combined mounting base (2), wherein a smoke detector (7) and an indicator light (8) are fixedly installed inside the combined housing (1), and the detection end of the smoke detector (7) is located outside the combined housing (1), characterized in that: The combined mounting base (2) is rotatably mounted with a side limiting component (4) for rapid and stable multi-point positioning of the combined mounting base (2). A pressing component (3) is provided above the side limiting component (4) for good and stable driving of the side limiting component (4). The side limiting assembly (4) includes a worm sleeve (42), a limiting rod (43), and a bearing bracket (45). The bearing bracket (45) is fixedly installed on the inner wall of the combined mounting base (2). The worm sleeve (42) is rotatably installed inside the bearing bracket (45). The worm sleeve (42) has a first limiting stud (41) and a second limiting stud (44) installed on its internal threads. The first limiting stud (41) and the second limiting stud (44) have the same diameter and the threads of the first limiting stud (41) and the second limiting stud (44) are opposite in direction.

2. The fire smoke detector according to claim 1, characterized in that, The limiting rod (43) is fixedly installed on the top inner wall of the combined mounting base (2). There are two limiting rods (43). The bottom ends of the two limiting rods (43) are slidably connected to the limiting grooves opened on the top of the first limiting stud (41) and the second limiting stud (44), respectively. One end of the first limiting stud (41) and the second limiting stud (44) are respectively located in the outlet holes provided on the outer walls of both sides of the combined mounting base (2).

3. The fire smoke detector according to claim 2, characterized in that, The pressing assembly (3) includes a limiting shaft (31) and a worm gear sleeve (32). A rotating groove (34) is provided on one side of the worm gear sleeve (32). The limiting shaft (31) is fixedly installed on the inner wall of one side of the combined mounting base (2). One end of the limiting shaft (31) is rotatably connected to the rotating groove (34). The worm gear sleeve (32) and the worm sleeve (42) mesh with each other. A push thread shaft (33) is installed on the inner thread of the worm gear sleeve (32). One end of the push thread shaft (33) is located outside the combined mounting base (2).

4. The fire smoke detector according to claim 3, characterized in that, The protective component (6) is provided in the side shell cavity of the combined housing (1) for the protection of the smoke detector (7). The protective component (6) includes a protective plate (61) and an inner folding plate (63). A side spring (62) is fixedly installed on one side outer wall of the protective plate (61). One end of the side spring (62) is fixedly connected to the inner wall of the shell cavity of the combined housing (1).

5. The fire smoke detector according to claim 4, characterized in that, A back groove (64) is provided on one side of the protective plate (61). An installation shaft (66) is rotatably installed inside the back groove (64). An outer spring (67) and an inner folding plate (63) are fixedly installed on the outside of the installation shaft (66). One end of the outer spring (67) is fixedly connected to the side wall of the back groove (64). A locking shaft (65) is fixedly installed on the outer wall of one side of the inner folding plate (63).

6. The fire smoke detector according to claim 5, characterized in that, The interior of the combined housing (1) is provided with a locking assembly (14) for the stable positioning of the protective assembly (6). The locking assembly (14) includes a return spring (141) and a displacement shaft (143). The return spring (141) and a side block (142) are fixedly installed on the outside of the displacement shaft (143). One end of the return spring (141) is fixedly connected to the inner wall of one side of the combined housing (1).

7. The fire smoke detector according to claim 6, characterized in that, The outer surface of the combined shell (1) is provided with a travel groove (13), the side block (142) is slidably connected to the travel groove (13), and a locking piece (144) is fixedly installed on one side of the outer wall of the side block (142). The locking piece (144) is in close contact with and squeezed against the protective plate (61).

8. The fire smoke detector according to claim 7, characterized in that, The side wall of the combined mounting base (2) is provided with a card slot (11) and a limiting pin hole (10). A card (12) is fixedly installed on the inner surface of the card slot (11). A limiting pin (9) is fixedly installed on the side wall of the combined housing (1). The limiting pin (9) and the limiting pin hole (10) are mutually compatible.

9. The fire smoke detector according to claim 8, characterized in that, The connecting component (5) is rotatably installed inside the combined housing (1) for stable and rapid assembly of the combined housing (1) and the combined mounting base (2). The connecting component (5) includes a rotating head (51) and a rotating rod (52), and the rotating rod (52) is rotatably installed inside the combined housing (1).

10. The fire smoke detector according to claim 9, characterized in that, The two ends of the rotating rod (52) are respectively fixedly installed with a rotating head (51) and a connecting clip (53). The rotating head (51) and the connecting clip (53) are both located on the outside of the combined shell (1). The connecting clip (53) has a locking protrusion on its outside.

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