Independent smoke-sensing fire detection alarm based on Internet of Things

Abstract

The invention discloses an independent smoke-sensing fire detection alarm based on the Internet of Things, which comprises a ceiling assembly, a drilling assembly, a rotating assembly and a shell, and is characterized in that the ceiling assembly is in threaded connection with the drilling assembly, the rotating assembly is in meshing transmission connection with the drilling assembly, the shell is detachably connected with the ceiling assembly, the drilling assembly comprises a plurality of fasteners, and the fasteners are connected with the rotating assembly. The fastener comprises a drill bit, a column body is fixedly connected to the bottom of the drill bit, two elastic pieces are symmetrically arranged at the joint of the drill bit and the column body, and a gear ring is arranged between two baffle rings at the bottom of the column body. Therefore, the base is fastened. According to the independent smoke alarm, extra tools do not need to be carried during installation, installation holes do not need to be reserved during gypsum board ceiling operation, installation of the independent smoke alarm can be conducted after ceiling operation, and the installation flexibility and the installation efficiency of the independent smoke alarm are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of smoke fire detection and alarm, and in particular relates to an independent smoke fire detection and alarm based on the Internet of Things. Background Art

[0002] A standalone smoke fire detector alarm is a device designed to detect smoke and sound an alarm when smoke is detected. It can detect smoke and sound an alarm in the early smoldering stage of a fire. It can be used independently without connecting to other devices. This battery-powered standalone smoke fire detector alarm is easy to install and is not restricted by circuit wiring, allowing for flexible installation options. When installing existing independent smoke fire detection alarms on indoor roofs with gypsum board ceilings during industrial and home decoration, it is generally necessary to reserve a position for the independent smoke fire detection alarm during the ceiling operation. Usually, a circular groove for installing the smoke fire detection alarm needs to be opened on the gypsum board. When the ceiling is installed after the installation, a circular groove also needs to be opened on the top of the gypsum board for installation. The former has a relatively fixed position and cannot be changed after the decoration is completed, while the latter easily causes burrs on the gypsum board during drilling operations, which makes it unsightly. Both of these require carrying a large number of tools and using a stepladder to operate and install the independent smoke fire detection alarm. The installation process is cumbersome and requires carrying a large number of tools. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an independent smoke fire detection alarm based on the Internet of Things to solve the problem that when installing an independent smoke fire detection alarm in the traditional way, a large number of tools need to be carried and a stepladder is used for operation and installation, and the installation process is cumbersome and requires a large number of tools to be carried.

[0004] An independent smoke fire detection alarm based on the Internet of Things, comprising: Ceiling assembly, drilling assembly, rotating assembly and shell, the ceiling assembly is threadedly connected to the drilling assembly, the rotating assembly is meshed and driven to the drilling assembly, and the shell is detachably connected to the ceiling assembly, wherein, The ceiling assembly includes a base, which is an annular structure, with an annular groove formed on its inner side wall, a plurality of through holes formed on the top edge of the annular groove, and a plurality of internal threaded sleeves fixedly connected to the upper surface of the bottom edge of the annular groove, and the positions of the plurality of internal threaded sleeves correspond to the positions of the plurality of through holes; The drilling assembly includes a plurality of fasteners. The fastener includes a drill bit. A cylinder is fixedly connected to the bottom of the drill bit. Two elastic pieces are symmetrically arranged at the connection between the drill bit and the cylinder. The first end of the elastic piece is fixedly connected to the cylinder. The second end of the elastic piece extends away from the cylinder and outward. A contact piece is fixedly connected to the second end of the elastic piece. A rubber pad is fixedly connected to the bottom of the contact piece. Two retaining rings are fixedly connected to the side surface of the bottom of the cylinder. A toothed ring is arranged between the two retaining rings, and the toothed ring is fixedly sleeved on the cylinder; The rotating assembly includes a gear ring. A limiting ring is fixedly connected to the inner side arm of the gear ring. A cross-shaped bracket is fixedly connected to the inner ring surface of the limiting ring. A knob is fixedly connected to the bottom center of the bracket.

[0005] According to a specific embodiment of the present invention, the plurality of through holes and the plurality of internal thread sleeves are both distributed in a circular array around the center of the base.

[0006] According to a specific embodiment of the present invention, two clearance grooves are symmetrically formed on the side surface of the cylinder. The upper edge of the clearance groove is fixedly connected to the first end of the elastic piece, and the lower edge of the clearance groove is far away from the contact piece.

[0007] According to a specific embodiment of the present invention, the cylinder penetrates through the through hole and is movably connected to the through hole.

[0008] According to a specific embodiment of the present invention, the gear ring is arranged between the two retaining rings on the plurality of cylinders, and the gear ring is meshed and connected with the plurality of toothed rings.

[0009] According to a specific embodiment of the present invention, the diameter formed by the second ends of the two elastic pieces is smaller than the maximum diameter of the drill bit.

[0010] According to a specific embodiment of the present invention, the diameter formed by the ends of the two contact pieces away from the cylinder is larger than the maximum diameter of the drill bit.

[0011] According to a specific embodiment of the present invention, a threaded post is fixedly connected to the bottom of the cylinder, and the threaded post is threadedly connected to the internal thread sleeve.

[0012] According to a specific embodiment of the present invention, a plurality of anti-slip grooves are formed on the side surface of the knob, and the plurality of anti-slip grooves are distributed in a circular array around the center of the knob.

[0013] According to a specific embodiment of the present invention, a plurality of card slots are formed at the bottom edge of the ring groove, and a plurality of buckles are fixedly connected to the top of the housing. The buckles are fixedly connected to the card slots by clamping.

[0014] According to a specific embodiment of the present invention, a plurality of ventilation grooves are formed on the bottom side surface of the housing, and the plurality of ventilation grooves are distributed in a circular array around the center of the housing.

[0015] According to a specific embodiment of the present invention, a PCB board and a battery pack are fixedly connected to the inside of the top of the housing, and the PCB board is electrically connected to the battery pack.

[0016] According to a specific embodiment of the present invention, a wireless communication module, an alarm module, a smoke sensor, and a control chip are integrated on a PCB board. The wireless communication module is used for network connection to transmit signals. The smoke sensor is used for monitoring smoke particles in the air and feeding back electrical signals to the control chip. The control chip is used for activating the alarm module to issue an alarm.

[0017] According to a specific embodiment of the present invention, the alarm module includes a buzzer and an LED light, which are used for emitting a buzzer sound and flashing for alarm.

[0018] According to a specific embodiment of the present invention, the shrapnel is made of an elastically deformable metal material.

[0019] According to a specific embodiment of the present invention, the ceiling-mounted assembly is fixedly connected to the gypsum board of the roof through a drilling assembly.

[0020] Compared with the prior art, a stand-alone smoke detector for fire detection based on the Internet of Things provided by the present invention has the following advantages: Through the drilling assembly, the rotating assembly, and the ceiling-mounted assembly, the present invention realizes the portable installation of the stand-alone smoke detector for fire detection. The drilling assembly is used to open holes in the gypsum board, and the shrapnel and the abutting piece in the drilling assembly are passed through the holes through the rotating assembly. Then, the knob is pulled down and rotated to make the threaded column threadedly connected with the internal threaded sleeve, thereby fastening the base. The stand-alone smoke detector for fire detection designed by the present invention is a smoke sensor for independent installation after ceiling work. Compared with the traditional smoke detector, which requires operations such as drilling, installing expansion screws, and fastening self-tapping screws during installation, the present invention does not require tools such as drilling tools, expansion screws, and self-tapping screws. Workers do not need to reserve installation holes during the gypsum board ceiling work, and the stand-alone smoke alarm can be installed independently after the ceiling work, improving the flexibility of the stand-alone smoke alarm installation and reducing the process of grooving during the ceiling work. Thereby simplifying the installation process and reducing the amount of tool carrying, and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a stand-alone smoke detector for fire detection based on the Internet of Things provided by an embodiment of the present invention.

[0023] Figure 2It is a schematic diagram of the connection between the ceiling-mounted component and the gypsum board provided by an embodiment of the present invention.

[0024] Figure 3 It is an explosion schematic diagram of an independent smoke detector fire alarm provided by an embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the ceiling-mounted component provided by an embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the rotating component provided by an embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the drilling component provided by an embodiment of the present invention.

[0028] Figure 7 It is a sectional view of an independent smoke detector fire alarm provided by an embodiment of the present invention.

[0029] Reference numerals: 1 - Gypsum board; 2 - Ceiling-mounted component; 3 - Drilling component; 4 - Rotating component; 5 - Housing; 6 - Snap; 7 - Ventilation slot; 201 - Base; 202 - Ring groove; 203 - Card slot; 204 - Through hole; 205 - Internal thread sleeve; 301 - Drill bit; 302 - Cylinder; 303 - Elastic piece; 304 - Abutting piece; 305 - Rubber pad; 306 - Retaining ring; 307 - Clearance groove; 308 - Tooth ring; 309 - Threaded post; 401 - Gear ring; 402 - Bracket; 403 - Limit ring; 404 - Knob; 405 - Anti-slip groove. Detailed implementation manners

[0030] In order to enable those skilled in the art to more clearly understand the concepts and ideas of the present invention, the present invention will be described in detail below in conjunction with specific embodiments. It should be understood that the embodiments given herein are only a part of all possible embodiments of the present invention. After reading the specification of this application, those skilled in the art are capable of making improvements, modifications, or substitutions to part or all of the following embodiments, and these improvements, modifications, or substitutions are also included within the scope of protection required by the present invention.

[0031] In this text, terms such as "advance notice", "incoming station", and other similar words are not intended to imply any order, quantity, or importance, but are merely used to distinguish different components. In this text, terms such as "a", "an", and other similar words are not intended to mean that there is only one thing, but rather that the relevant description only applies to one of the things, and the thing may have one or more. In this text, terms such as "comprising", "including", and other similar words are intended to represent a logical relationship, and should not be regarded as representing a spatial structure relationship. For example, "A includes B" is intended to mean that logically B belongs to A, rather than meaning that B is located inside A in terms of space. Additionally, the meanings of terms such as "comprising", "including", and other similar words should be regarded as open-ended rather than closed. For example, "A includes B" is intended to mean that B belongs to A, but B does not necessarily constitute the whole of A, and A may also include other elements such as C, D, E, etc.

[0032] In this text, terms such as "embodiment", "the present embodiment", "an embodiment", "one embodiment" do not mean that the relevant description only applies to a specific embodiment, but rather that these descriptions may also apply to one or more other embodiments. Those skilled in the art should understand that in this text, any description made for a certain embodiment can be substituted, combined, or otherwise combined with the relevant descriptions in one or more other embodiments, and the new embodiments generated by substitution, combination, or otherwise combination are easily conceivable by those skilled in the art and fall within the protection scope of the present invention.

[0033] Embodiment 1 Additional aspects and advantages of the embodiments of the present invention will be partly given in the following description, partly become apparent from the following description, or be understood through the practice of the embodiments of the present invention. In combination with Figures 1 - 7 , the embodiments of the present invention provide an independent smoke detector for fire detection based on the Internet of Things, including: A ceiling suction component 2, a drilling component 3, a rotating component 4, and a housing 5. The ceiling suction component 2 is threadedly connected to the drilling component 3. The rotating component 4 is in meshing transmission connection with the drilling component 3. The housing 5 is detachably connected to the ceiling suction component 2. The ceiling suction component 2 is fixedly connected to the gypsum board 1 of the roof through the drilling component 3, where The ceiling suction component 2 includes a base 201. The base 201 is of an annular structure. An annular groove 202 is formed on its inner sidewall. A plurality of through holes 204 are formed at the top edge of the annular groove 202. A plurality of internal thread sleeves 205 are fixedly connected to the upper surface of the bottom edge of the annular groove 202, and the positions of the plurality of internal thread sleeves 205 correspond to the positions of the plurality of through holes 204, where the plurality of through holes 204 and the plurality of internal thread sleeves 205 are both distributed in an annular array centered on the center of the base.

[0034] The drilling assembly 3 includes a plurality of fasteners. The fasteners include a drill bit 301. A cylinder 302 is fixedly connected to the bottom of the drill bit 301. The cylinder 302 passes through the through hole 204 and is movably connected to the through hole 204. A threaded column 309 is fixedly connected to the bottom of the cylinder 302. The threaded column 309 is threadedly connected to the internal thread sleeve 205. Two elastic pieces 303 are symmetrically arranged at the connection between the drill bit 301 and the cylinder 302. The first end of the elastic piece 303 is fixedly connected to the cylinder 302. The second end of the elastic piece 303 extends away from the cylinder 302 and outwards. A contact piece 304 is fixedly connected to the second end of the elastic piece 303. The diameter formed by the second ends of the two elastic pieces 303 is smaller than the maximum diameter of the drill bit 301. The diameter formed by the ends of the two contact pieces 304 away from the cylinder 302 is larger than the maximum diameter of the drill bit 301. In a specific embodiment of the present invention, the elastic piece 303 is made of an elastically deformable metal material. A rubber pad 305 is fixedly connected to the bottom of the contact piece 304. Two retaining rings 306 are fixedly connected to the side surface of the bottom of the cylinder 302. A toothed ring 308 is arranged between the two retaining rings 306, and the toothed ring 308 is fixedly sleeved on the cylinder 302. The rotating assembly 4 includes a gear ring 401. A limiting ring 403 is fixedly connected to the inner side arm of the gear ring 401. A cross-shaped bracket 402 is fixedly connected to the inner ring surface of the limiting ring 403. A knob 404 is fixedly connected to the center bottom of the bracket 402.

[0035] An independent smoke detector fire alarm based on the Internet of Things provided by the present invention drives the drill bit 301 to rotate by rotating the knob 404. When the drill bit 301 is pushed upwards and rotated by the knob 404, it performs a hole-opening operation on the gypsum board 1, and passes the elastic pieces 303 and the contact pieces 304 through the opened hole. Then, the knob is pulled downwards and rotated to threadedly connect the threaded column 309 with the internal thread sleeve 205, thereby fastening the base. This enables personnel to install the independent smoke alarm after the ceiling installation operation without pre-reserving installation holes during the gypsum board ceiling operation. Compared with the traditional method of installing an independent smoke detector fire alarm, which requires carrying a large number of tools and cooperating with a step ladder for installation, the present invention improves the flexibility of installing the independent smoke alarm and reduces the process of grooving during the ceiling operation.

[0036] Specifically, two escape grooves 307 are symmetrically formed on the side surface of the column 302. The upper edges of the escape grooves 307 are fixedly connected to the first end of the spring clip 303, and the lower edges of the escape grooves 307 are away from the abutment piece 304. By providing the escape grooves 307, when the drill bit 301 penetrates the gypsum board 1, the spring clip 303 and the abutment piece 304 are squeezed by the hole and then retracted into the escape grooves 307, so that the edge of the abutment piece 304 remains flush with the outer wall of the column 302, facilitating the spring clip 303 and the abutment piece 304 to pass through the hole. After the spring clip 303 and the abutment piece 304 pass through the hole, due to the lack of external pressure, the spring clip 303 and the abutment piece 304 are ejected away from the escape grooves 307 under the elastic force of the spring clip 303, so that the abutment piece 304 is abutted and fixed to the gypsum board 1.

[0037] Specifically, the gear ring 401 is disposed between two retaining rings 306 on the plurality of columns 302, and the gear ring 401 is meshed with the plurality of gear rings 308. Thus, when the gear ring 401 rotates, the meshed gear rings 308 cause the columns 302 and the drill bit 301 to rotate together, thereby achieving the drilling operation in the gypsum board 1.

[0038] Specifically, a plurality of anti-skid grooves 405 are provided on the side surface of the knob 404, and the plurality of anti-skid grooves 405 are distributed in a circular array with the center of the knob 404. By providing the anti-skid grooves 405, when the knob 404 is twisted, the friction between the palm is increased to prevent slipping.

[0039] Specifically, a plurality of slots 203 are formed on the bottom edge of the annular groove 202, and a plurality of buckles 6 are fixedly connected to the top of the housing 5, which are engaged and fixed with the slots 203. When assembling the ceiling assembly 2 and the housing 5, the L-shaped buckles 6 on the top of the housing 5 are aligned with the slots 203 of the ceiling assembly 2, and the housing 5 is rotated to shift the buckles 6 relative to the slots 203, thereby achieving the engagement and fixation of the housing 5 and the ceiling assembly 2. When disassembling the ceiling assembly 2 and the housing 5, the buckles 6 are disengaged from the slots 203 by rotating the housing 5 in the opposite direction, thereby achieving the separation of the housing 5 and the ceiling assembly 2.

[0040] Specifically, a PCB and a battery pack are fixedly connected to the top interior of the housing 5. The PCB is electrically connected to the battery pack and integrates a wireless communication module, an alarm module, a smoke sensor, and a control chip. The wireless communication module is used to connect to a network and transmit signals. The smoke sensor is used to monitor smoke particles in the air and transmit electrical signals to the control chip. The control chip is used to activate the alarm module to issue an alarm. The alarm module includes a buzzer and an LED light that emit a buzzing and flashing alarm. When the smoke sensor detects smoke particles in the air, it transmits an electrical signal to the control chip. The control chip then sends an alarm command to trigger the alarm module and transmit an alarm signal via the wireless communication module.

[0041] Specifically, a plurality of ventilation slots 7 are provided on the bottom side surface of the housing 5, and the plurality of ventilation slots 7 are distributed in an annular array with the center of the housing 5 as the center. By providing the ventilation slots 7 at the bottom of the housing 5, it is convenient for the heat dissipation of the PCB board and the battery inside the housing 5.

[0042] Embodiment 2 The invention embodiment also provides an installation method for an independent smoke detector fire alarm based on the Internet of Things. The specific method is as follows: When installing, first perform a snap-fit test on the base 201 and the buckle 6 to test whether the housing 5 and the ceiling-mounted assembly 2 are adapted, and turn on the smoke detector to confirm whether the smoke detector is working properly. After the test is completed, place the side of the base 201 with the drill bit 301 facing up and fit it on the gypsum board 1 located on the indoor ceiling. One hand of the staff grasps the base 201, and the other hand rotates the knob 404 and applies an upward thrust. At this time, the gear ring 401 rotates and drives the cylinder 302 and the drill bit 301 to rotate together through the meshing tooth ring 308, and the drill bit 301 drills the gypsum board 1. When the drill bit 301 completely penetrates the gypsum board 1, stop rotating the knob 404, and continue to push the knob 404 upward, so that the gear ring 401 pushes the cylinder 302 upward through the retaining ring 306 until the elastic piece 303 and the abutting piece 304 pass through the gypsum board 1. When the elastic piece 303 and the abutting piece 304 pass through the hole on the gypsum board 1, the maximum diameter of the expanded abutting piece 304 is greater than the diameter of the hole formed by drilling the gypsum board 1 with the drill bit 301, so that when the abutting piece 304 passes through the hole, the elastic piece 303 and the abutting piece 304 are retracted into the clearance groove 307 on the cylinder 302 until after completely passing through the hole, the abutting piece 304 loses the restraint of the hole and thus returns to the conical state under the elastic deformation force of the elastic piece 303. Then, pull down and rotate the knob 404. At this time, the abutting piece 304 is subjected to a downward force and under the elastic deformation force of the elastic piece 303, the bottom of the rubber pad 305 on the abutting piece 304 abuts against the top of the gypsum board 1 and the two elastic pieces 303 are expanded to both sides. The distance after the elastic pieces 303 are expanded to both sides is much larger than the diameter of the hole. As the knob 404 rotates, the threaded column 309 is threadedly connected with the internal thread sleeve 205, so that the base 201 is firmly installed on the gypsum board 1. Then, align the buckle 6 at the top of the housing 5 with the card slot 203 and rotate the housing 5 to make the buckle 6 and the card slot 203 snap-fit. At this time, the installation of the independent smoke detector fire alarm is completed.

[0043] In summary, an independent smoke detector fire alarm based on the Internet of Things provided by the present invention has the following advantages: Through the drilling assembly, the rotating assembly and the ceiling-sucking assembly, the present invention realizes the portable installation of the independent smoke detector for fire detection. The drilling assembly performs hole-opening operations on the gypsum board, and the rotating assembly passes the elastic piece and the abutting piece in the drilling assembly through the hole. Then, the knob is pulled down and rotated, so that the threaded column is threadedly connected with the internally threaded sleeve, thereby fastening the base. The independent smoke detector for fire detection designed by the present invention is a smoke sensor that is independently installed after ceiling installation. Compared with the traditional smoke detector for fire detection, which requires operations such as drilling, installing expansion screws, and fastening collision screws during installation, the present invention does not require tools such as drilling tools, expansion screws, and self-tapping screws. Workers do not need to reserve installation holes during the gypsum board ceiling installation operation, and can install the independent smoke alarm after the ceiling installation operation, improving the flexibility of the independent smoke alarm installation and reducing the process of slotting during the ceiling installation operation. Thereby simplifying the installation process and reducing the amount of tool carrying, and improving the installation efficiency.

[0044] The concept, principle and idea of the present invention have been described in detail above in combination with specific implementation manners (including embodiments and examples). Those skilled in the art should understand that the implementation manners of the present invention are not limited to the several forms given above. After reading the present application document, those skilled in the art can make any possible improvements, substitutions and equivalent forms to the steps, methods, systems and components in the above implementation manners. These improvements, substitutions and equivalent forms should be regarded as falling within the scope of the present invention. The protection scope of the present invention is only subject to the claims.

Claims

1. An independent smoke detector and fire alarm based on the Internet of Things, characterized in that, Including: A ceiling-mounted component, a drilling component, a rotating component and a housing. The ceiling-mounted component is threadedly connected to the drilling component. The rotating component is meshed and drivingly connected to the drilling component. The housing is detachably connected to the ceiling-mounted component. Wherein, The ceiling-mounted component includes a base. The base is of an annular structure. An annular groove is formed on its inner sidewall. A plurality of through holes are formed in the top edge of the annular groove. The upper surface of the bottom edge of the annular groove is fixedly connected with a plurality of internal thread sleeves. And the positions of the plurality of internal thread sleeves correspond to the plurality of through holes; The drilling component includes a plurality of fasteners. Each fastener includes a drill bit. A cylinder is fixedly connected to the bottom of the drill bit. Two elastic pieces are symmetrically arranged at the connection between the drill bit and the cylinder. The first end of the elastic piece is fixedly connected to the cylinder. The second end of the elastic piece extends away from the cylinder and outward. A contact piece is fixedly connected to the second end of the elastic piece. A rubber pad is fixedly connected to the bottom of the contact piece. Two retaining rings are fixedly connected to the side surface of the bottom of the cylinder. A toothed ring is arranged between the two retaining rings. And the toothed ring is fixedly sleeved on the cylinder; The rotating component includes a gear ring. A limiting ring is fixedly connected to the inner side arm of the gear ring. A cross-shaped bracket is fixedly connected to the inner ring surface of the limiting ring. A knob is fixedly connected to the bottom center of the bracket.

2. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that The plurality of through holes and the plurality of internal thread sleeves are both distributed in an annular array around the center of the base.

3. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, Two clearance grooves are symmetrically formed on the side surface of the cylinder. The upper edge of the clearance groove is fixedly connected to the first end of the elastic piece. The lower edge of the clearance groove is far away from the contact piece.

4. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that The cylinder passes through the through hole and is movably connected to the through hole.

5. The standalone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, The gear ring is arranged between the two retaining rings on the plurality of cylinders. And the gear ring is meshed with the plurality of toothed rings.

6. The standalone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, The diameter formed by the second ends of the two elastic pieces is smaller than the maximum diameter of the drill bit.

7. The independent smoke fire detection alarm based on the Internet of Things according to claim 1 is characterized in that: The diameter formed by the ends of the two contact pieces away from the cylinder is larger than the maximum diameter of the drill bit.

8. The independent smoke fire detection alarm based on the Internet of Things according to claim 1 is characterized in that: A threaded column is fixedly connected to the bottom of the cylinder. The threaded column is threadedly connected to the internal thread sleeve.

9. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, A plurality of anti-slip grooves are formed on the side surface of the knob. And the plurality of anti-slip grooves are distributed in an annular array around the center of the knob.

10. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, A plurality of clamping grooves are formed on the bottom edge of the annular groove. A plurality of buckles are fixedly connected to the top of the housing. The buckles are fixedly connected to the clamping grooves by clamping.

11. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, A plurality of ventilation grooves are formed on the bottom side surface of the housing. The plurality of ventilation grooves are distributed in an annular array around the center of the housing.

12. The standalone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, A PCB board and a battery pack are fixedly connected to the inner part of the top of the housing. The PCB board is electrically connected to the battery pack.

13. The standalone smoke detector fire alarm based on the Internet of Things according to claim 12, characterized in that, A wireless communication module, an alarm module, a smoke sensor and a control chip are integrated on the PCB board. The wireless communication module is used for network connection and signal transmission. The smoke sensor is used for monitoring smoke particles in the air and feeding back to the control chip through an electrical signal. The control chip is used for starting the alarm module to give an alarm.

14. The standalone smoke detector fire alarm based on the Internet of Things according to claim 13, characterized in that, The alarm module includes a buzzer and an LED lamp, which are used for giving a buzzer sound and flashing for alarm.

15. The standalone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, The elastic piece is made of an elastically deformable metal material.

16. The stand-alone smoke detector fire alarm based on the Internet of Things according to claim 1, characterized in that, The ceiling-mounted component is fixedly connected to the gypsum board on the roof through the drilling component.

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