CN109862329B - Monitoring equipment - Google Patents

Abstract

The utility model provides a supervisory equipment, is in including body and equipment camera subassembly and loudspeaker module on the body, the body includes the inner shell and assembles in the outlying shell of inner shell, the outer wall of inner shell inwards sunken formation loudspeaker groove, loudspeaker module includes loudspeaker main part and loudspeaker support, loudspeaker main part is fixed in loudspeaker support, and the loudspeaker support that is fixed with loudspeaker main part is fixed in loudspeaker inslot through the equipment, the shell is established from top to bottom the cover is in the inner shell is peripheral, assembles on the inner shell through loudspeaker module, then overlaps and establishes the equipment shell, so can the inner space of rational layout body, can be favorable to the equipment of shell simultaneously, improves whole appearance aesthetic measure.

Description

Monitoring equipment

Technical Field

The present invention relates to a monitoring device.

Background

A CAMERA (CAMERA or WEBCAM) is also called a computer CAMERA, a computer eye, an electronic eye, etc., and is a video input device widely used in video conference, telemedicine, real-time monitoring, etc. Ordinary persons can also talk and communicate with each other in a network with images and sounds through the camera. In addition, people can also use the video processing device for various popular digital images, video processing and the like. Particularly, with the continuous development of network communication technology, internet and internet of things in recent years, intelligent camera terminal products are widely applied and are integrated into daily life of all ordinary people. Meanwhile, the use scene of the camera is wider and wider, the functions of the camera are more and more powerful, meanwhile, the structure of a terminal product of the camera is more and more complex, the internal structure and design of the camera are compact and complex to match, and the manufacturing process and the assembly difficulty of the product are more and more difficult.

Chinese patent No. CN205336447U discloses an intelligent camera, which comprises a front shell, a light sensor, an infrared lamp cover, a sealing ring, a lens, a working indicator, a universal joint, a base, a magnet, a rear shell, a buzzer, a microphone, a An Zhuochuan port, a reset button and other parts. In addition, chinese patent No. 204887184U discloses a home network intelligent camera and a monitoring system, which comprises a base, a network camera main body connected to the base, wherein the base is detachably connected with the network camera main body, and the network camera main body comprises a housing, a bracket connected with the housing, a first circuit board, a camera, a microphone, a first group of indicator lamps, a wireless transmission module, a loudspeaker, a memory, a reset key, a circuit board and other structural members.

However, as the functions of the terminal product of the intelligent camera become more and more powerful, the structure becomes more and more complex, and some structural coordination disclosed in the prior art cannot meet the requirements. Therefore, how to design a monitoring device product which has smart structure matching, simple assembly process and economy and durability is a problem that related operators must think at present.

In view of this, there is a need for improvements in the past monitoring equipment products to achieve better product functionality requirements.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide the monitoring equipment which is simpler in assembly process, more stable in structural fit and economical and durable.

The invention is realized by the following technical scheme:

the utility model provides a supervisory equipment, includes the body and assembles camera subassembly and loudspeaker module on the body, the body includes the inner shell and assembles in the peripheral shell of inner shell, the outer wall of inner shell inwards caves in and forms the loudspeaker groove, loudspeaker module includes loudspeaker main part and loudspeaker support, loudspeaker main part is spacing in loudspeaker support, and the loudspeaker support that bears loudspeaker main part is fixed in loudspeaker inslot through the equipment, the shell is established from top to bottom the cover the inner shell is peripheral.

Further, the horn bracket comprises a bracket main body which is approximately annular and foolproof lugs which are formed by extending the side edges of the bracket main body, foolproof grooves are formed in positions of the horn grooves corresponding to the foolproof lugs, and the foolproof lugs are correspondingly limited in the foolproof grooves.

Further, the horn bracket is fixed in the horn groove through the bolt locked on the fool-proof lug part, and the fool-proof lug part and the fool-proof groove are matched to play a fool-proof role, so that the horn bracket is prevented from being reversely arranged in the horn groove.

Further, two foolproof lugs are formed on the horn bracket, the two foolproof lugs are designed into a non-centrosymmetric shape, and the foolproof groove is matched with the corresponding foolproof lugs in shape.

Further, EVA foam is fixedly arranged on the outer surface of the horn bracket, a dustproof net is adhered to the outer surface of the EVA foam, and the dustproof net covers the whole horn groove and the outer wall surface of the inner shell around the horn groove.

Furthermore, the bracket main body is also provided with only one wiring notch.

Further, the upper position of the inner shell forms an accommodating space, the camera component is accommodated in the accommodating space and pivoted with the inner shell, the outer shell is barrel-shaped and forms a window at the upper position, the camera component is provided with a lens, and the lens is exposed from the window.

Further, the camera subassembly includes support portion, fixes camera module and motor on the support portion, the motor is provided with the output shaft, the output shaft is direct fixed with the inner shell, unable relative rotation between the output shaft and the body of motor, one side that the camera subassembly kept away from the output shaft corresponds with the rotatable pin joint of inner shell.

Further, still include the base, the center pin has been set firmly to the body below, the center pin passes through a bearing and base pin joint, the center pin is made by metal material, can be used to the supervisory equipment of thing networking still include with center pin complex fixation nut, the body still includes the backup pad, the cavity is formed to inner shell below position, the cavity below is covered by the backup pad, the backup pad is fixed with the body, the shell cover is established inner shell and backup pad periphery, the center pin is fixed in backup pad intermediate position, the base includes drain pan and bottom plate, the drain pan forms up open-ended accommodation space, the bottom plate lid is located the accommodation space top and is fixed integrative with the drain pan, the bottom plate corresponds the center pin position and sets up the mating holes, the bearing is held in the mating holes, the center pin passes the bearing and passes through fixation nut is spacing bottom plate and backup pad in the upper and lower direction, bottom plate and backup pad can realize the rotation of horizontal direction for the pivot with the center pin.

Further, form the satellite hole in the adjacent position of center pin in the backup pad, set firmly first motor in the backup pad, first motor is equipped with rotatory output shaft, rotatory output shaft is protruding to stretch into in the satellite hole, be fixed with the satellite gear on the rotatory output shaft, be fixed with the master gear under the mating hole of bottom plate, the master gear is coaxial with the center pin, satellite gear and master gear meshing, the center pin is cavity tubulose and forms the mesopore, the mesopore communicates the cavity of body and the accommodation space of base.

Compared with the prior art, the loudspeaker module is assembled on the inner shell, and then the assembled outer shell is sleeved, so that the inner space of the body can be reasonably distributed, the assembly of the outer shell can be facilitated, and the overall appearance attractiveness is improved.

Drawings

Fig. 1 is a perspective view of the monitoring device of the present design.

Fig. 2 is a partially exploded perspective view of the present design monitoring device showing a perspective view of the outer housing separated from the inner housing.

Fig. 3 is a perspective view of fig. 2 from another angle.

Fig. 4 is a further exploded view of fig. 3.

Fig. 5 is a further exploded view of fig. 4.

Fig. 6 is a partially exploded perspective view of the present design monitor, showing a perspective view of the speaker module and the outer housing separated from the inner housing.

Fig. 6-1 is a perspective view of a heat dissipating assembly of the present design monitoring device.

Fig. 7 is a further exploded view of fig. 2.

Fig. 8 is a partially exploded perspective view of the present design monitoring device.

Fig. 9 is a partially exploded perspective view of the present design monitoring device.

Fig. 10 is a further exploded view of fig. 9.

Fig. 11 is a partially exploded perspective view of the present design monitoring device.

Fig. 12 is a cross-sectional view taken along line A-A of fig. 1.

Fig. 13 is a sectional view taken along line B-B of fig. 1.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be further noted that, in order to avoid obscuring the present application with unnecessary details, only structures and/or processing steps closely related to some embodiments of the present application are shown in the drawings, while other details not greatly related to some embodiments of the present application are omitted.

In addition, it should be further noted that the terms "comprises," "comprising," "has," "having," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

For the sake of accuracy, reference is made herein to fig. 1 for all references to directions, wherein the extending direction of the X-axis is the left-right direction (wherein the positive direction of the X-axis is left), the extending direction of the Y-axis is the front-back direction (wherein the positive direction of the Y-axis is front), and the extending direction of the Z-axis is the up-down direction (wherein the positive direction of the Z-axis is up). For convenience of description, the vertical, horizontal, front-rear directions in this application are relative positions, and do not limit implementation.

Referring to fig. 1 to 13, the present design discloses a monitoring device having a generally cylindrical shape, including a base 1, a body 2 assembled on the base 1, and a camera assembly 3 assembled on the body 2. The body 2 is rotatably connected with the base 1, and the body 2 can rotate 360 degrees in the horizontal direction relative to the base 1. The camera component 3 is rotatably connected with the body 2, and the camera component 3 can rotate at a certain angle (the design is approximately 90 degrees) relative to the body 2 in the vertical direction.

Referring to fig. 2 to 8, the body 2 includes an inner shell 21, a supporting plate 22 assembled below the inner shell 21, and an outer shell 23 sleeved on the outer peripheries of the inner shell 21 and the supporting plate 22 from top to bottom. A cavity (not shown) is formed below the inner shell 21, which cavity is covered by a support plate 22. The inner case 21 is formed with a pair of support arms 211 upwardly at opposite sides above the cavity. An accommodating space 210 is formed between the two support arms 211. The inner housing 21 forms a barrier 2101 between the cavity and the receiving space 210. A mating hole 2111 is penetrated through the upper portion of the support arm 211, the cross section of the mating hole 2111 is non-circular, in this design, the cross section of the mating hole 2111 is formed by combining a rectangle and two semicircles (similar to the shape of a playground track), and in other embodiments, the mating hole 2111 may be square, oval, trapezoid, polygon, etc.; the upper end of the other support arm 211 is provided with a mating portion 2112, and in this design, the mating portion 2112 is actually an arc-shaped recess structure formed by downwardly recessing the upper end edge of the support arm 211 (of course, the mating portion 2112 may also be a through hole structure). The engaging hole 2111 and the engaging portion 2112 of the supporting arm 211 are used for engaging the camera module 3.

Referring to fig. 1, 2, 3 and 8, the outer casing 23 is generally cylindrical, a through hole window 230 is formed at a position near the upper side of the outer casing 23, and the support plate 22 is assembled below the inner casing 21 and is fixed to the inner casing 21 by bolts (not labeled). The outer shell 23 and the inner shell 21 are fixed by bolts (not shown). The support plate 22 has an assembly hole 220 formed at a middle position, and a satellite hole 221 formed adjacent to the assembly hole 220. A central shaft 222 is fixed in the assembly hole 220 of the support plate 22, and the central shaft 222 is hollow and tubular and forms a central hole 2220. In this design, the central shaft 222 and the support plate 22 cannot rotate relatively in the horizontal plane direction, specifically, a chamfer 2221 is formed on the peripheral wall of the central shaft 222, and limiting is achieved through the cooperation structure of the chamfer 2221 and the inner wall of the assembly hole 220. The central shaft 222 downwardly projects from the lower surface of the support plate 22. The outer periphery of the central shaft 222 is sleeved with a bearing 223 near the lower surface of the support plate 22, an external thread 224 is formed below the bearing 223 on the outer periphery of the central shaft 222, and the central shaft 222 further comprises a fixing nut 226 matched with the external thread 224.

In this design, the central shaft 222 is made of a metal material (may be any solid metal, preferably a metal material that is not easy to rust and has a certain physical strength, such as stainless steel, aluminum alloy, etc., copper alloy, etc.), and the central shaft 222 is matched with a bearing 223 (metal bearing) to design a fit clearance between the two bearings to be smaller, which is favorable for stable pivoting between the main body 2 and the base 1, and meanwhile, can avoid or reduce the shaking amplitude of the main body 2 when rotating relative to the base 1 as much as possible, so as to improve the shooting stability of the camera component 3.

The central bore 2220 of the central shaft 222 is used for routing of the wires 6. Smooth arc-shaped guide parts 2222 are arranged on the inner sides of the upper end and the lower end opening edge positions of the central shaft 222 and are used for preventing the wires 6 in the central hole 2220 from being scratched and damaged when the shell 2 rotates relative to the base 1.

Referring to fig. 8, 10 and 11, a first motor 225 is fixed on the upper surface of the support plate 22, the first motor 225 is located in the cavity, the first motor 225 is provided with a rotary output shaft (not labeled), the rotary output shaft protrudes into the satellite hole 221, and a satellite gear 2251 is sleeved on the rotary output shaft. The satellite gears 2251 are correspondingly matched with the base 1.

Referring to fig. 5 and 6, the camera module 3 includes a bracket portion 31, a camera module 32, a chip module 33, a second motor 34, and a heat dissipation assembly 35, wherein the bracket portion 31 is substantially in a hollow hemispherical shape. The camera module 3 is shaped to be received between a pair of support arms 211 of the inner housing 21. The bracket portion 31 includes a front bracket shell 311 and a rear bracket shell 312 that are fastened to each other, the front bracket shell penetrates to form a lens window (not labeled), the lens of the camera module 32 is exposed out of the lens window, the front bracket shell 311 and the rear bracket shell 312 together form a module space (not labeled), the camera module 32 and the chip module 33 are assembled and accommodated in the module space, and the heat dissipation assembly 35 and the second motor 34 are assembled to the rear position of the rear bracket shell 312.

The second motor 34 is provided with an output shaft 341, the output shaft 341 correspondingly protrudes into the mating hole 2111, and the outer periphery of the output shaft 341 is designed to be matched with the mating hole 2111, so that the output shaft 341 and the support arm 211 cannot rotate relatively. In this design, the outer side of the supporting arm 211 is locked with the output shaft 341, so as to achieve absolute fixation of the output shaft 341 and the supporting arm 211. The bracket 31 has a shaft portion 313 with a circular outer circumferential cross section protruding outwards from a side thereof away from the output shaft 341, and the shaft portion 313 is supported above the mating portion 2112 of the corresponding support arm 211. Specifically, the rotation shaft portion 313 is formed on the rear bracket shell 312.

The second motor 34 drives the output shaft 341 to rotate, so as to drive the camera module 3 to rotate vertically relative to the inner housing 21, thereby realizing rotation of the lens of the camera module 32 in the window 230 of the outer housing 23. Referring to fig. 4, a limiting post 2113 is formed on an inner surface of one of the supporting arms 211 of the inner housing 21, and a limiting portion 312 is formed on a corresponding position of the bracket portion 31 of the camera module 3. When the camera assembly 3 rotates in the vertical direction relative to the inner housing 21, the limiting portion 312 correspondingly abuts against the limiting post 2113, so as to limit the rotation angle of the camera assembly 3. In this design, through the ingenious combination relation of second motor 34, support portion 31 and inner shell 21 for whole equipment simple process, and camera subassembly 3 is rotatory stable and smooth relatively body 2, long service life.

Referring to fig. 6-1, the heat dissipating component 35 is made of a metal material with good heat conductivity, a receiving notch 351 is formed at a front end of the heat dissipating component 35, a conductive post 352 is formed at a position adjacent to the receiving notch 351 by protruding forward of the heat dissipating component 35, and a grid-shaped heat dissipating portion 353 is formed at a rear end of the heat dissipating component 35 (a position behind the conductive post 352 of the heat dissipating component 35 and a position behind the receiving notch 351 of the heat dissipating component 35) by protruding. The heat dissipation assembly 35 is fixed to the bracket portion 31 by bolts, and the second motor 34 is at least partially accommodated in the accommodating notch 351 of the heat dissipation assembly 35, so that the second motor 34 can be protected, and heat transfer can be generated between the second motor 34 and the second motor. The conductive posts 352 protrude forward through the rear bracket shell 312 into the module space and contact the chip module 33. The shape design of the heat dissipation assembly 35 and the mutual position relationship of the second motor 34 are matched, so that the heat dissipation assembly 35 can generate heat transfer with the second motor 34 while passively dissipating heat from the chip module 33 (the heat transfer generated between the heat dissipation assembly 35 and the second motor 34 can be direct contact heat transfer or indirect heat transfer due to close proximity), and the heat dissipation assembly 35 connects the second motor 34 in series for synchronously dissipating heat to the chip module 33 in terms of heat transfer function, thereby improving the space utilization rate and the heat dissipation effect to the greatest extent.

Referring to fig. 6, the outer peripheral wall of the inner shell 21 is recessed with a speaker slot 212, and the speaker module 4 is assembled in the speaker slot 212. The speaker module 4 includes a speaker main body 41, a speaker bracket 42, EVA foam 43, and a dust screen 44. The horn bracket 42 includes a bracket body 421 having a substantially annular shape and foolproof lugs 422 formed by extending from both sides of the bracket body 421. The horn groove 212 is formed with a fool-proof groove 2121 corresponding to the fool-proof ear 422. The horn bracket 212 is fixed in the horn groove 212 by a bolt locked on the fool-proof lug 422, and the two fool-proof lugs 422 are designed into a non-centrosymmetric shape so that the horn bracket 42 can be installed along one direction only (can not be installed by rotating 180 degrees), thus ensuring that the outer surface of the horn bracket 42 is flush with the outer side surface of the inner shell 21, and reducing the design tolerance and the assembly precision requirement. EVA foam 43 is fixedly arranged on the outer surface of the horn bracket 42, and a dustproof net 44 is adhered to the outer surface of the EVA foam 43. In addition, the bracket body 421 is further provided with only one wire notch 4211 for allowing the cable to pass through, and only one wire notch 4211 is provided to prevent the speaker bracket 42 from being reversely mounted.

During the assembly of the loudspeaker module 4 in the design, firstly, the loudspeaker main body 41 and the loudspeaker support 42 are assembled into a whole, then the loudspeaker support 42 assembled with the loudspeaker main body 41 is installed in the loudspeaker groove 212 of the inner shell 21, then the EVA foam 43 is additionally arranged on the outer surface of the loudspeaker support 42, then the dustproof net 44 is attached to the outer side surface of the inner shell 21, the dustproof net 44 covers the whole loudspeaker groove 212 to realize the dustproof function, and finally the outer shell 23 is sleeved outside the inner shell 21 to finish the assembly. In this design, pass through the support with loudspeaker module 4 and install on inner shell 21, assemble shell 23 at last, so can rationally distributed supervisory equipment's body 2 inner space, can be favorable to the equipment of shell 23 simultaneously. The dust screen 44 is attached to the inner housing while ensuring the overall aesthetic appearance of the monitoring device.

Referring to fig. 3 to 13, the base 1 includes a bottom shell 11 having a substantially bowl shape and a bottom plate 12 covering the bottom shell 11. The bottom shell 11 and the bottom plate 12 are fixed through bolts. The bottom shell 11 is provided with a containing space 10 above, the bottom plate 12 is covered above the containing space 10, and the containing space 10 is internally provided with a circuit board module 13. The middle of the bottom plate 12 is provided with a matching hole 121 corresponding to the central shaft 222. A main gear 122 is fixedly arranged right below the matching hole, and the main gear 122 is coaxial with the central shaft 222. The bearing 223 is assembled and fixed in the mating hole 121 (the present design specifically limits the bearing 223 by the inner wall of the mating hole 121 of the base plate 12 and the main gear 122. The central shaft 222 passes through the bearing 223 and limits the bottom plate 12 and the support plate 22 in the up-down direction through the fixing nut 226, and meanwhile, the bottom plate 12 and the support plate 22 can rotate in the horizontal direction by taking the central shaft 222 as a rotating shaft through the bearing 223. The satellite gears 2251 are engaged with the main gear 122, respectively. In use, the first motor 225 drives the satellite gear 2251 to rotate, and the satellite gear 2251 drives the main gear 122 to rotate, so that the base plate 12 and the support plate 22 rotate relative to each other, and the main body 2 and the base 1 rotate relative to each other.

Referring to fig. 3 to 13, the outer peripheral edge of the fixing nut 226 is integrally designed to be a circular arc smooth transition structure 2260, the fixing nut 226 forms two planar operating surfaces 2261 only at two opposite sides of the outer periphery, and the operating surfaces 2261 provide a wrench force bearing surface for tightening the fixing nut 226. The length of the operating surface 2261 in the radial direction is preferably less than one half of the inner diameter of the fixing nut 226, so as to prevent scraping damage to the wire 6 located in the central bore 2220 when the housing 2 is rotated relative to the base 1. Of course, in other embodiments, the planar operating surface 2261 may be designed to be one or more, and of course, when designed to be more than one, the planar operating surfaces 2261 are discontinuous to minimize the influence on the wire 6.

The circuit board module 13 is fixed in the bottom shell 11 through bolts, specifically, two opposite sides of the circuit board module 13 are fixed in the bottom shell through a bolt respectively, and the other two sides of the circuit board module 13 are borne on corresponding step surfaces of the bottom shell 11 and are not fixed with the bottom shell 11, so that the overall flatness of the circuit board module 13 is improved, and unnecessary twisting of the circuit board module 13 caused by locking of a plurality of bolts is avoided.

Referring to fig. 3, 4, 5, 10, and 11, the barrier wall 2101 of the inner housing 21 is formed with a routing hole 2102 therethrough, the routing hole 2102 is located at a position near the rear of the inner housing 21 (i.e., at a position behind the camera module 32), the routing hole 2102 communicates a cavity at a position below the inner housing 21 with a receiving space at a position above the inner housing 21, and simultaneously communicates with the receiving space of the bottom housing 11 through a middle hole 2220 of the central shaft 222 to form a channel extending in the up-down direction for routing wires. The design can reduce the influence on the lead 6 when the camera module 32 rotates relative to the body 2 and the body 2 rotates relative to the base 1 as far as possible, and prevent the lead 6 from being bent and broken normally. Specifically, in the rotation process of the camera module 32 relative to the body 2, the bending position of the wire 6 is as far away from the connection position of the conductive component as possible, and the wire 6 is bent along the length direction of the wire 6, so that the wire 6 is not easy to break. In addition, when the body 2 rotates relative to the base 1, the wire 6 can be prevented from being bound in the longer unlimited channel due to the longer wiring channel penetrating in the up-down direction, so that the wire 6 is not easy to break.

Referring to fig. 10 and 11, a limiting structure 127 is formed on the surface of the bottom plate 12 facing the supporting plate 22, a matching structure 227 is formed on the supporting plate 22 corresponding to the limiting structure 127, and when the main body 2 rotates relative to the base 1, the matching structure 227 collides with the limiting structure 127 to realize rotation limiting, so as to determine the zero position of the main body 2 relative to the base 1. The limiting structure 127 and the matching structure 227 are bump structures in this design.

While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the present invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art within the scope of the present invention, all of which are within the scope of the present invention.

Claims (9)

1. The utility model provides a supervisory equipment, includes the body and assembles camera subassembly and loudspeaker module on the body, the body includes the inner shell and assembles in the peripheral shell of inner shell, its characterized in that: the outer wall surface of the inner shell is inwards recessed to form a horn groove, the horn module comprises a horn main body and a horn bracket, the horn main body is limited on the horn bracket, the horn bracket bearing the horn main body is fixed in the horn groove through assembly, and the outer shell is sleeved on the periphery of the inner shell from top to bottom;

the monitoring equipment comprises a base, wherein a central shaft is fixedly arranged below the body and is pivoted with the base through a bearing, the central shaft is made of a metal material, the monitoring equipment further comprises a fixing nut matched with the central shaft, the body further comprises a supporting plate, a cavity is formed at the lower position of the inner shell, the lower part of the cavity is covered by the supporting plate, the supporting plate is fixed with the body, an outer shell is sleeved on the periphery of the inner shell and the supporting plate, the central shaft is fixed at the middle position of the supporting plate, the base comprises a bottom shell and a bottom plate, the bottom shell forms an upward opening containing space, the bottom plate is covered above the containing space and is integrally fixed with the bottom shell, a matching hole is formed in the position of the bottom plate corresponding to the central shaft, the bearing is contained in the matching hole, the central shaft penetrates through the bearing and limits the bottom plate and the supporting plate in the upper and lower directions, and the bottom plate and the supporting plate can rotate in the horizontal directions by taking the central shaft as a rotating shaft.

2. The monitoring device according to claim 1, wherein the horn bracket comprises a bracket main body in a substantially annular shape and fool-proof lugs formed by extending the side edges of the bracket main body, fool-proof grooves are formed at positions of the horn grooves corresponding to the fool-proof lugs, and the fool-proof lugs are correspondingly limited in the fool-proof grooves.

3. A monitoring device according to claim 2, wherein the horn bracket is secured to the horn slot by means of a bolt which is snapped onto the fool-proof ear, the fool-proof ear cooperating with the fool-proof slot to prevent the horn bracket from being installed in the horn slot in a reverse direction.

4. A monitoring device according to claim 2, wherein two foolproof lugs are formed on the horn support, the foolproof lugs are designed into a non-centrosymmetric shape, and the foolproof slot is matched with the corresponding foolproof lugs.

5. The monitoring device according to claim 2, wherein the outer surface of the horn bracket is fixedly provided with EVA foam, the EVA foam is externally attached with a dust screen, and the dust screen covers the whole horn groove and the outer wall surface of the inner shell around the horn groove.

6. A monitoring device according to claim 2, wherein the holder body is further provided with only one wiring notch.

7. A monitoring device according to claim 1, wherein the upper position of the inner housing forms a receiving space, the camera module is received in the receiving space and pivotally connected to the inner housing, the outer housing is barrel-shaped and forms a window thereabove, and the camera module is provided with a lens, the lens being exposed from the window.

8. The monitoring device of claim 7, wherein the camera assembly comprises a bracket portion, a camera module fixed on the bracket portion, and a motor, the motor is provided with an output shaft, the output shaft is directly fixed with the inner shell, the output shaft of the motor and the body cannot rotate relatively, and one side of the camera assembly far away from the output shaft is correspondingly pivoted with the inner shell in a rotatable manner.

9. The monitoring device according to claim 1, wherein satellite holes are formed in adjacent positions of the central shaft in the supporting plate, a first motor is fixedly arranged in the supporting plate, a rotary output shaft is arranged on the first motor, the rotary output shaft protrudes into the satellite holes, a satellite gear is fixedly arranged on the rotary output shaft, a main gear is fixedly arranged right below the matching holes of the bottom plate, the main gear is coaxial with the central shaft, the satellite gear is meshed with the main gear, the central shaft is hollow and is provided with a middle hole, and the middle hole communicates a cavity of the body with a containing space of the base.