An omnidirectional antenna structure

Abstract

The present application relates to an omnidirectional antenna structure, belonging to the technical field of omnidirectional antennas. It includes a protective shell and an antenna body. A protective device is provided on the protective shell, and the protective device includes: a mounting base, which is slidably arranged on the protective shell, and the antenna body is arranged on the mounting base; a protective door, which is slidably arranged on the protective shell. When the antenna body is moved into the protective shell, the protective door blocks the mounting hole, and after the protective door opens the mounting hole, the antenna body moves to the outside of the protective shell through the mounting hole; a control mechanism, which is arranged on the protective shell and is used to control the opening and closing of the protective door. In this application, the control mechanism is started to drive the protective door to close. When the protective door closes, it drives the mounting base to move into the protective shell, and the protective door blocks the mounting hole, thereby protecting the antenna body, reducing the probability of damage to the antenna body due to contact with an open flame, and improving the monitoring effect of the antenna.

Description

Technical Field

[0001] This application relates to the technical field of omnidirectional antennas, and particularly to an omnidirectional antenna structure. Background Art

[0002] An omnidirectional antenna shows uniform radiation in all 360° on the horizontal radiation pattern, that is, it is usually said to be non-directional. On the vertical radiation pattern, it shows a beam with a certain width. Generally, the smaller the beam width, the greater the gain. Omnidirectional antennas are generally used in the station types of suburban and large-area systems in mobile communication systems, with a large coverage range. As the demand for network communication transmission in families, factories, etc. increases, some omnidirectional antennas have begun to be used indoors.

[0003] In the related art, reference can be made to the Chinese utility model patent with the authorization announcement number CN210576402U, which discloses a 4G street lamp omnidirectional antenna, including a lamp post and an omnidirectional antenna installed on the lamp post, and further including an upper mounting seat and a lower mounting seat installed on the lamp post. The upper mounting seat and the lower mounting seat are arranged at intervals up and down. Two parallel guide ropes are connected between the upper mounting seat and the lower mounting seat along the length direction of the lamp post; a slider is slidably connected between the two guide ropes, and the omnidirectional antenna is installed on the slider. A connecting rope is fixed in the middle of the upper end surface of the slider. A rope pulley is installed on the upper mounting seat, a wire winding wheel is installed on the lower mounting seat, and a hand wheel for rotating the wire winding wheel is installed on one side of the wire winding wheel. The connecting rope bypasses the rope pulley and is wound around the wire winding wheel. A rotation stopping component for preventing the wire winding wheel from rotating when the slider moves to the upper mounting seat and an unlocking component for unlocking the rotation stopping function of the wire winding wheel are provided on the lower mounting seat. This utility model has the advantage of being convenient for repairing the omnidirectional antenna.

[0004] In view of the above related art, the inventor believes that there are the following defects: but when the omnidirectional antenna is used indoors, fires are likely to occur indoors, so the antenna is likely to come into contact with an open flame, causing damage to the antenna and reducing the monitoring effect of the antenna. Summary of the Invention

[0005] In order to improve the monitoring effect of the antenna, this application provides an omnidirectional antenna structure.

[0006] An omnidirectional antenna structure provided by this application adopts the following technical solutions:

[0007] An omnidirectional antenna structure includes a protective shell with a mounting hole and an antenna body arranged on the protective shell. A protective device for protecting the antenna body is arranged on the protective shell. The protective device includes:

[0008] A mounting seat, which is slidably arranged on the protective shell, and the antenna body is arranged on the mounting seat;

[0009] A protective door is slidably arranged on the protective shell. When the antenna body moves into the protective shell, the protective door blocks the mounting hole. After the protective door opens the mounting hole, the antenna body moves to the outside of the protective shell through the mounting hole.

[0010] A control mechanism is arranged on the protective shell and is used to control the opening and closing of the protective door.

[0011] By adopting the above technical solutions, in the normal state, the antenna body is located outside for monitoring. When a fire occurs, the control mechanism is activated to drive the protective door to close. When the protective door closes, it drives the mounting seat to move into the protective shell, and the protective door blocks the mounting hole, thereby protecting the antenna body and reducing the probability of damage to the antenna body caused by contact with open fire, improving the monitoring effect of the antenna. After the fire is extinguished, the control mechanism is activated to drive the protective door to open the mounting hole, and at the same time, the protective door drives the antenna body to move outside the protective shell to continue monitoring, thus improving the convenience of the antenna body to resume monitoring after the fire is extinguished.

[0012] Optionally, the control mechanism includes:

[0013] A slide rail is arranged on the protective shell, and the protective door is slidably arranged on the slide rail and is in an inclined state. A synchronous rope connected to the mounting seat is arranged on the protective door. In the normal state, the protective door is in a vertical state. The protective door can slide down under the action of gravity to a horizontal state to block the mounting hole, and the protective door drives the antenna body to move into the protective shell through the synchronous rope.

[0014] A pushing component is arranged on the protective door and is used to push the protective door to move back.

[0015] A locking component is arranged on the protective shell and is used to lock the protective door.

[0016] By adopting the above technical solutions, in the normal state, the locking component is activated to lock the protective door. After a fire occurs, the locking component is opened, and the protective door moves down under the action of gravity. The downward movement of the protective door drives the sliding seat and the antenna body to move up through the synchronous rope. When the protective door slides to a horizontal state, it blocks the mounting hole, and the mounting seat and the antenna body move into the protective shell, thereby protecting the antenna body.

[0017] When the fire is extinguished, the pushing component is activated to drive the protective door to move back and open the mounting hole, and the mounting seat and the antenna body move down under the action of gravity. When the protective door moves to a vertical state, the antenna body moves outside the protective shell to continue monitoring, and the locking component is activated to lock the protective door, so the convenience of the antenna body to resume monitoring after the fire is extinguished is improved.

[0018] Meanwhile, the protective door is in a vertical state under normal conditions and in a horizontal state when blocking the installation hole, thereby reducing the space occupied by the protective door during operation and improving the convenience during the operation of the protective door.

[0019] Optionally, the locking assembly includes:

[0020] A locking rod, which is slidably arranged on the protective shell and is provided with an iron sheet;

[0021] A positioning spring, which is arranged on the protective shell and is connected to the locking rod;

[0022] An electromagnet, which is arranged on the protective shell. When the electromagnet is powered on to adsorb the iron sheet, the locking rod is inserted into the protective door for positioning. When the electromagnet is powered off, the locking rod is separated from the protective door under the action of the positioning spring;

[0023] A temperature detector, which is arranged on the protective shell and is used to detect the temperature. The temperature detector is electrically connected to the electromagnet and is used to control the power on or off of the electromagnet.

[0024] By adopting the above technical solution, after a fire occurs, the temperature rises, and the temperature detector detects the rising temperature and controls the electromagnet to power off. The electromagnet loses the adsorption force on the iron sheet, and the locking rod is separated from the protective door under the action of the spring. Therefore, the protective door moves downward under the action of gravity; when the antenna body resumes monitoring, it pushes the protective door back to its original position, then pushes the locking rod to be inserted into the protective door for positioning the protective door, and the iron sheet abuts against the electromagnet. Then, the temperature detector is started to control the electromagnet to power on, and the iron sheet is closely attached to the electromagnet under the adsorption action of the electromagnet, so as to control the protective door to protect the antenna body according to the fire situation, improving the protection effect on the antenna body.

[0025] Optionally, a hot melt column pressing against the locking rod is detachably arranged on the protective shell through a connecting device, and the melting temperature of the hot melt column is lower than the temperature at which the temperature detector powers off the electromagnet.

[0026] By adopting the above technical solution, the hot melt column presses against the locking rod for positioning. Therefore, when the power supply of the electromagnet is turned off, the hot melt column presses against the locking rod to position the protective door, reducing the probability of the protective door moving downward by mistake due to the power supply being turned off, thereby improving the positioning effect of the locking rod on the protective door;

[0027] When a fire occurs, the temperature rises, causing the heat - melting column to melt. The heat - melting column loses its positioning effect on the locking rod. When the electromagnet is powered off, the protective door can move downward to protect the antenna body. If the electromagnet is in the powered - on state and the temperature continues to rise, the temperature detector controls the electromagnet to power off, so that the protective door can move downward to protect the antenna body, improving the stability of the operation process of the protective door.

[0028] Optionally, the connecting device includes:

[0029] An installation bin, which is arranged on the protective shell;

[0030] A sliding rod, which is arranged on the locking rod and extends into the installation bin;

[0031] A pressing plate, which is arranged on the sliding rod and cooperates with the inner side wall of the installation bin to form an installation cavity. The heat - melting column is snap - fitted into the installation cavity and presses against the pressing plate.

[0032] By adopting the above - mentioned technical solution, the heat - melting column melts when heated, so the heat - melting column loses its positioning effect on the locking rod; when the heat - melting column needs to be replaced, push the pressing plate away from the installation cavity, then snap - fit the heat - melting column onto the installation bin, and release the pressing plate. The pressing plate presses against the heat - melting column under the action of the positioning spring, so as to realize the positioning of the heat - melting column on the locking rod.

[0033] Optionally, a collecting component for collecting the melted heat - melting column is arranged on the installation bin. The collecting component includes:

[0034] A support block, which is arranged on the lower surface of the installation bin;

[0035] A collecting box, which is snap - fitted onto the support block. A through - hole is opened on the installation bin for the melted heat - melting column to fall into the collecting box.

[0036] By adopting the above - mentioned technical solution, the melted heat - melting column flows into the collecting box through the through - hole for collection, so as to recycle the material for making the heat - melting column, reducing the waste of resources and the probability of polluting the environment when the melted heat - melting column moves into the environment; when the collecting box needs to be cleaned, remove the collecting box for cleaning. After cleaning, snap - fit the collecting box onto the support block, so as to improve the collecting effect of the collecting box on the melted heat - melting column.

[0037] Optionally, the pushing component includes:

[0038] A push block, which is arranged on the protective door and used to push the protective door to move back;

[0039] The first positioning block and the second positioning block are respectively arranged on the sliding rail and the protective housing. When the antenna body moves outside the protective housing, the protective door abuts against the first positioning block and the mounting seat abuts against the second positioning block for positioning.

[0040] By adopting the above technical solution, the push block is pushed to drive the protective door to move back, so that the protective door abuts against the first positioning block, and the mounting seat abuts against the second positioning block for support. Then the locking component is started to lock the protective door, thereby improving the stability of the antenna body during monitoring, improving the monitoring effect of the antenna body, and reducing the probability of damage to the synchronous rope due to the pulling force of the mounting seat, and improving the service life of the synchronous rope.

[0041] Optionally, an installation opening is formed at one end of the protective housing away from the installation hole, and an installation cover blocking the installation opening is threadedly connected to the installation opening. A socket for signal transmission is arranged on the installation cover, and a signal wiring for signal transmission and made of a soft material and connected to the antenna body is arranged on the socket.

[0042] By adopting the above technical solution, the socket is convenient for plugging and connecting with an external connecting wire. Therefore, the antenna body is connected for data and power through the signal wiring, the socket and the connecting wire, thereby improving the convenience of antenna installation; and the signal wiring is made of a soft material, thereby reducing the damage to the signal wiring caused by pulling the signal wiring when the mounting seat moves, and improving the service life of the signal wiring. Therefore, the service life of the antenna structure is improved.

[0043] Optionally, a ball rolling on the sliding rail is rotatably arranged on the protective door, and a guiding ring for guiding the synchronous rope is arranged on the installation cover.

[0044] By adopting the above technical solution, the ball reduces the friction between the protective door and the sliding rail, thereby reducing the resistance generated when the protective door moves, improving the timeliness of the protective door for protecting the antenna body, and thus improving the protection effect of the protective door on the antenna body; and the guiding ring guides the synchronous rope, improving the stability of the synchronous rope during movement.

[0045] In summary, the present application includes at least one of the following beneficial technical effects:

[0046] 1. The control mechanism is started to drive the protective door to close. When the protective door closes, the mounting seat is driven to move into the protective housing, and the protective door blocks the mounting hole, thereby protecting the antenna body, increasing the probability of the antenna body being damaged by contact with an open flame, and improving the monitoring effect of the antenna.

[0047] 2. After a fire occurs, when the locking component is opened, the protective door moves downward under the action of gravity to block the installation hole, and the downward movement of the protective door drives the mounting seat and the antenna body to move into the protective shell, so as to protect the antenna body; when the fire is extinguished, the pushing component is activated to drive the protective door to move back and open the installation hole, and the antenna body moves outside the protective shell under the action of gravity to continue monitoring, and the locking component is activated to lock the protective door, so the convenience of the antenna body resuming monitoring after the fire is extinguished is improved;

[0048] 3. The hot melt column presses against the locking rod for positioning. Therefore, when the power supply of the electromagnet is turned off, the hot melt column presses against the locking rod to position the protective door, reducing the probability of the protective door moving downward by mistake, thereby improving the positioning effect of the locking rod on the protective door; when a fire occurs, the temperature rises, causing the hot melt column to melt, and after the temperature continues to rise, the temperature detector controls the electromagnet to cut off the power, so that the protective door can move downward to protect the antenna body, improving the stability of the operation process of the protective door. Brief Description of the Drawings

[0049] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0050] Figure 2 is a partial structural schematic diagram of the present application, in which the protective shell and the side wall of the protective tube are sectioned;

[0051] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0052] Figure 4 is a structural schematic diagram of the protection device, the connection device and the collection component in the present application, in which one of the slide rails is exploded;

[0053] Figure 5 is a structural schematic diagram of the locking component in the present application;

[0054] Figure 6 is a structural schematic diagram of the collection component in the present application, in which the hot melt column and the collection box are exploded.

[0055] Reference numerals: 1, protective housing; 10, protective tube; 11, antenna body; 12, mounting hole; 13, mounting opening; 14, mounting cover; 141, guiding ring; 15, socket; 16, signal wiring; 17, avoidance hole; 18, synchronous rope; 19, mounting plate; 2, protective device; 21, mounting seat; 22, protective door; 23, slider; 24, fixing block; 25, plugging groove; 3, control mechanism; 31, slide rail; 311, vertical section; 312, inclined section; 313, horizontal section; 314, sliding hole; 32, pushing assembly; 33, pushing block; 34, first positioning block; 35, second positioning block; 4, locking assembly; 41, locking rod; 411, first plugging rod; 412, second plugging rod; 413, connecting rod; 414, iron sheet; 42, positioning spring; 43, electromagnet; 44, temperature detector; 5, hot melt column; 6, connecting device; 61, mounting bin; 62, sliding rod; 63, abutting plate; 64, mounting cavity; 7, collection assembly; 71, support block; 72, collection box; 73, clamping groove; 74, through hole. Detailed implementation manners

[0056] The following Figures 1-6 further elaborates on this application in conjunction with the attached drawings.

[0057] The embodiment of this application discloses an omnidirectional antenna structure.

[0058] In this embodiment, the model of the temperature detector 44 is WZP-187.

[0059] Referring to Figure 1 , the omnidirectional antenna structure includes a cuboid-shaped protective housing 1 and an antenna body 11 arranged on the protective housing 1. A protective device 2 for protecting the antenna body 11 is arranged on the protective housing 1.

[0060] Referring to Figure 1 and Figure 2 , a mounting hole 12 is opened at the bottom end of the protective housing 1, and a cylindrical protective tube 10 is integrally arranged at the top end of the protective housing 1, and the axis of the protective tube 10 coincides with the center line of the protective housing 1; a mounting opening 13 is opened at the top end of the protective tube 10, and a threaded section is arranged on the outer wall of the protective tube 10 and near one side of the mounting opening 13, and a mounting cover 14 blocking the mounting opening 13 is threadedly connected to the threaded section.

[0061] Referring to Figure 1 and Figure 2 , the protective device 2 includes a mounting seat 21 and a protective door 22. The mounting seat 21 is vertically slidably mounted on the inner side wall of the protective housing 1, and the antenna body 11 is fixedly mounted on the lower surface of the mounting seat 21; the protective door 22 is slidably mounted on the protective housing 1, and there are two protective doors 22 and they are located on the opposite sides of the protective housing 1.

[0062] Referring toFigure 1 and Figure 2 On the upper surface of the mounting cover 14, a socket 15 for signal transmission is fixedly installed. The socket 15 is convenient for connecting an external connecting wire for transmitting power and signals. A signal wiring 16 is fixedly installed on the socket 15 and extends through the mounting cover 14 into the interior of the protective shell 1. The signal wiring 16 passes through the mounting base 21 and is fixedly connected to the antenna body 11. At the same time, the signal wiring 16 is used for signal transmission and power transmission of the antenna body 11, and the signal wiring 16 is made of a soft material.

[0063] Refer to Figure 2 and Figure 3 As shown in FIGS. and, on the opposite side walls of the protective shell 1 and on the side close to the mounting cover 14, avoidance holes 17 are provided. On the lower surface of the mounting cover 14, guide rings 141 are fixedly installed on both sides close to the two avoidance holes 17. Synchronous ropes 18 are fixedly installed on both of the protective doors 22. One end of the synchronous rope 18 far from the protective door 22 passes through the avoidance hole 17 and the guide ring 141 and is fixedly connected to the upper surface of the mounting base 21. The guide ring 141 guides the synchronous rope 18. At the same time, the synchronous rope 18 connects the protective door 22 and the mounting base 21 together, and the synchronous rope 18 is tensioned under the gravity of the protective door 22 and the mounting base 21.

[0064] Refer to Figure 1 and Figure 4 As shown in FIGS. and, the protection device 2 further includes a control mechanism 3. The control mechanism 3 is provided on the protective shell 1 and there are two of them. The two control mechanisms 3 are located on the opposite sides of the protective shell 1 and are respectively used to control the opening and closing of the protective door 22. The control mechanism 3 includes a slide rail 31 and a pushing component 32. Two slide rails 31 are horizontally arranged at intervals and fixedly installed on the outer side wall of the protective shell 1. On the opposite side walls of the two slide rails 31, sliding holes 314 communicating with the inside of the slide rails 31 are provided.

[0065] Refer to Figure 1 and Figure 4 The protective door 22 is respectively slidably installed on the two slide rails 31 through two sliders 23. The two sliders 23 are respectively fixedly installed at both ends of the protective door 22 in the length direction. Ball bearings (not shown in the figure) that roll on the slide rails 31 are rotatably installed on both of the sliders 23. When the protective door 22 is in a vertical state, the slider 23 is located on the side close to the top end of the protective door 22. The slide rail 31 is in an inclined state. The slide rail 31 includes a vertical section 311, an inclined section 312 and a horizontal section 313 connected in sequence. The vertical section 311 and the horizontal section 313 are respectively located on the upper and lower sides of the inclined section 312. When the slider 23 is slidably installed on the vertical section 311, the protective door 22 is in a vertical state. When the slider 23 is slidably installed on the horizontal section 313, the protective door 22 is in a horizontal state, and the two protective doors 22 cooperate to block the mounting hole 12.

[0066] Refer toFigure 2 and Figure 4 The pushing component 32 is provided with two and is respectively used for pushing the two protective doors 22 to move back; the pushing component 32 includes a pushing block 33, a first positioning block 34 and a second positioning block 35. The pushing block 33 is fixedly installed on the side walls of the two sliding blocks 23 on the opposite sides, and the pushing block 33 horizontally penetrates outside the sliding hole 314. The movement of the sliding block 23 drives the pushing block 33 to move together.

[0067] Referring to Figure 2 and Figure 4 As shown in FIGS. and, two first positioning blocks 34 are provided and are respectively fixedly installed on the tops of the two vertical sections 311, and two second positioning blocks 35 are provided and are fixedly installed on the bottom end of the protective shell 1. At the same time, the two second positioning blocks 35 are located on both sides of the mounting seat 21. When the pushing block 33 is driven to move the sliding block 23 to abut against the first positioning block 34, the mounting seat 21 abuts against the upper surface of the second positioning block 35, and at the same time, the antenna body 11 is located outside the protective shell 1.

[0068] Referring to Figure 2 and Figure 4 As shown in FIGS. and, under the action of gravity, the protective door 22 moves downward. At the same time, the downward movement of the protective door 22 pulls the synchronous rope 18 to move. The movement of the synchronous rope 18 drives the mounting seat 21 and the antenna body 11 to move into the protective shell 1. The downward movement of the protective door 22 drives the sliding block 23 to move to the horizontal section 313 through the vertical section 311 and the inclined section 312. The protective door 22 changes from a vertical state to a horizontal state, and the two protective doors 22 abut against each other and block the mounting hole 12.

[0069] Referring to Figure 1 and Figure 4 As shown in FIGS. and, mounting plates 19 are fixedly installed on both outer side walls of the protective shell 1 connected to the two protective doors 33, and the mounting plates 19 are located above the slide rail 31; the control mechanism 3 further includes a locking component 4. Two locking components 4 are provided, and the two locking components 4 are respectively located on the two mounting plates 19 and are respectively used for locking the two protective doors 22.

[0070] Referring to Figure 4 and Figure 5 As shown in FIGS. and, the locking component 4 includes a locking rod 41, a positioning spring 42, an electromagnet 43 and a temperature detector 44. A fixed block 24 is fixedly installed on the protective door 22. When the protective door 22 is in a vertical state, the fixed block 24 is located at the top of the protective door 22, and at the same time, a plugging groove 25 is formed on the side wall of the fixed block 24.

[0071] Referring to Figure 4 and Figure 5, the locking lever 41 includes a first insertion rod 411, a second insertion rod 412 and a connecting rod 413. The first insertion rod 411 is located below the second insertion rod 412 and both are horizontally slidably mounted on the side wall of the mounting plate 19. At the same time, the sliding directions of the first insertion rod 411 and the second insertion rod 412 are parallel to the length direction of the protective door 22; and the connecting rod 413 is integrally provided at one end on the same side of the first insertion rod 411 and the second insertion rod 412.

[0072] Refer to Figure 4 and Figure 5 , a iron sheet 414 is fixedly installed at one end of the second insertion rod 412 away from the connecting rod 413. Both ends of the positioning spring 42 are fixedly connected to the side wall of the connecting rod 413 close to the iron sheet 414 and the side wall of the mounting plate 19. The electromagnet 43 is fixedly installed on the side wall of the mounting plate 19, and the electromagnet 43 is located on the side of the iron sheet 414 away from the second insertion rod 412. A control box for controlling the energization or de-energization of the electromagnet 43 is fixedly installed on the side wall of the mounting plate 19.

[0073] Refer to Figure 4 and Figure 5 , when the electromagnet 43 is energized, the iron sheet 414 is adsorbed on the electromagnet 43, and the first insertion rod 411 is inserted into the insertion slot 25, and the positioning spring 42 is in a compressed state; when the electromagnet 43 is de-energized, the positioning spring 42 pushes the connecting rod 413 and the second insertion rod 412 away from the fixed block 24, so that the first insertion rod 411 is disengaged from the insertion slot 25.

[0074] Refer to Figure 4 and Figure 5 , the temperature detector 44 is fixedly installed on the side wall of the mounting plate 19, and the temperature detector 44 is located below the fixed block 24 and is electrically connected to the control box. At the same time, the temperature detector 44 controls the energization or de-energization of the electromagnet 43 by detecting the temperature. A hot melt column 5 is detachably arranged on the mounting plate 19 through a connecting device 6, and the hot melt column 5 presses against the side wall of the connecting rod 413 facing away from the second insertion rod 412; the hot melt column 5 is made of a hot melt material, and the hot melt material can be a thermally expandable glass body, and the melting temperature of the hot melt column 5 is less than the temperature at which the temperature detector 44 controls the electromagnet 43 to de-energize.

[0075] Refer to Figure 4 and Figure 6The connecting device 6 includes an installation bin 61, a sliding rod 62 and a back plate 63. The installation bin 61 is fixedly installed on the side wall of the installation plate 19, and the installation bin 61 is located on the side of the connecting rod 413 away from the second plug-in rod 412, and the top of the installation bin 61 is in an open state; one end of the sliding rod 62 is fixedly installed on the side wall of the connecting rod 413 away from the second plug-in rod 412, and the other end of the sliding rod 62 horizontally passes through the installation bin 61 and extends into the installation bin 61; the back plate 63 is fixedly installed on one end of the sliding rod 62 located in the installation bin 61, and the inner side wall of the installation bin 61 and the back plate 63 form an installation cavity 64, the hot melt column 5 is clamped and installed on the installation cavity 64, and the hot melt column 5 is pressed on the back plate 63 for positioning the back plate 63 and the first plug-in rod 411.

[0076] Reference Figure 4 and Figure 6 The fire causes the temperature to rise, thereby melting the hot melt column 5, and the hot melt column 5 loses its positioning effect on the first plug-in rod 411. Then the temperature detector 44 detects the temperature increase, and the temperature detector 44 controls the electromagnet 43 to cut off the power. The first plug-in rod 411 is detached from the plug-in slot 25 under the action of the positioning spring 42, and the protective door 22 moves downward under the action of gravity.

[0077] Reference Figure 4 and Figure 6 After the fire is extinguished, the protective door 22 moves back and contacts the first positioning block 34, pushing the abutment plate 63 to drive the first plug-in rod 411 to be plugged and installed on the plug-in slot 25, and the hot melt column 5 is snap-fitted and installed on the installation cavity 64. The abutment plate 63 is loosened so that the abutment plate 63 is pressed against the hot melt column 5, and the temperature detector 44 is started to control the electromagnet 43 to be energized, and the iron sheet 414 is adsorbed on the electromagnet 43, so as to realize the positioning of the protective door 22.

[0078] Reference Figure 4 and Figure 6 A collecting assembly 7 for collecting the melted hot melt column 5 is provided on the installation bin 61. The collecting assembly 7 includes a supporting block 71 and a collecting box 72. Two supporting blocks 71 are provided and fixedly installed on the lower surface of the installation bin 61. At the same time, a clamping groove 73 is provided on the side wall on the opposite side of the two supporting blocks 71, and the clamping groove 73 runs through the side wall on the same side of the two supporting blocks 71. A through hole 74 is provided on the lower surface of the installation bin 61 and located between the two supporting blocks 71; the collecting box 72 is clamped and installed on the clamping groove 73, and the melted hot melt column 5 flows into the collecting box 72 through the through hole 74 for collection.

[0079] The working principle of the embodiment of the present application is as follows:

[0080] The occurrence of a fire causes the temperature to rise, which melts the heat-melting column 5 and loses the positioning of the first plugging rod 411. Then, the temperature detector 44 controls the electromagnet 43 to cut off the power supply, and the first plugging rod 411 disengages from the plugging slot 25. Under the action of gravity, the protection door 22 moves downward, and the protection door 22 pulls the antenna body 11 into the protection shell 1. The two protection doors 22 contact each other and block the installation hole 12, so as to protect the antenna body 11, reduce the probability of damage to the antenna body 11 due to contact with open fire, and improve the monitoring effect of the antenna body 11.

[0081] After the fire is extinguished, push to drive the protection door 22 to move back and contact the first positioning block 34, and the mounting seat 21 moves under the action of gravity to contact the second positioning block 35, and the antenna body 11 moves outside the protection shell 1; push the pressing plate 63 to drive the first plugging rod 411 to be plugged and installed into the plugging slot 25, and the heat-melting column 5 is clamped and installed on the installation cavity 64. Release the pressing plate 63 so that the pressing plate 63 presses on the heat-melting column 5, and start the temperature detector 44 to control the electromagnet 43 to be energized, and the iron sheet 414 is adsorbed on the electromagnet 43, so as to position the protection door 22, thereby improving the convenience when the antenna body 11 resumes monitoring after the fire is extinguished.

[0082] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An omnidirectional antenna structure, characterized in that: It includes a protective shell (1) with an installation hole (12) formed therein, and an antenna body (11) disposed on the protective shell (1). A protective device (2) for protecting the antenna body (11) is provided on the protective shell (1). The protective device (2) includes: A mounting seat (21) slidably disposed on the protective shell (1), and the antenna body (11) is disposed on the mounting seat (21); A protective door (22) provided with a synchronous rope (18) connected to the mounting seat (21), and the synchronous rope (18) is tensioned under the gravity of the protective door (22) and the mounting seat (21); In the normal state, the protective door (22) is in a vertical state, and the installation hole (12) is opened when the protective door (22) is in the vertical state; The protective door (22) can slide down along the slide rail (31) to a horizontal state. When the protective door (22) slides down along the slide rail (31), the antenna body (11) is driven by the synchronous rope (18) to move into the protective shell (1). When the protective door (22) is in the horizontal state, the installation hole (12) is blocked; After the protective door (22) slides up along the slide rail (31) to the vertical state and opens the installation hole (12), the antenna body (11) moves to the outside of the protective shell (1) through the installation hole (12); A control mechanism (3) disposed on the protective shell (1) and used to control the opening and closing of the protective door (22); The control mechanism (3) includes: The slide rail (31) disposed on the protective shell (1), and the protective door (22) is slidably disposed on the slide rail (31), A pushing component (32) disposed on the protective door (22) and used to push the protective door (22) to move back along the slide rail (31); A locking component (4) disposed on the protective shell (1) and used to lock the protective door (22).

2. The omnidirectional antenna structure according to claim 1, characterized in that: The slide rail (31) includes a vertical section (311), an inclined section (312) and a horizontal section (313) connected together in sequence; The vertical section (311) and the horizontal section (313) are respectively located on the upper and lower sides of the inclined section (312); Two slide rails (31) are horizontally spaced and respectively fixedly installed on the outer side wall of the protective shell (1); The protective door (22) is slidably installed on the two slide rails (31) through two sliders (23), and the two sliders (23) are respectively fixedly installed at both ends of the protective door (22) in the length direction; When the slider (23) slides onto the vertical section (311), the protective door (22) is in a vertical state, and when the slider (23) slides onto the horizontal section (313), the protective door (22) is in a horizontal state.

3. The omnidirectional antenna structure according to claim 1, wherein: The locking component (4) includes: A locking rod (41) slidably disposed on the protective shell (1) and provided with an iron sheet (414); A positioning spring (42) disposed on the protective shell (1) and connected to the locking rod (41); An electromagnet (43) is provided on the protective housing (1). After the electromagnet (43) is energized to attract the iron sheet (414), the locking rod (41) is inserted into the protective door (22) for positioning. When the electromagnet (43) is de-energized, the locking rod (41) disengages from the protective door (22) under the action of the positioning spring (42). A temperature detector (44) is provided on the protective housing (1) and is used to detect temperature. The temperature detector (44) is electrically connected to the electromagnet (43) and is used to control the energization or de-energization of the electromagnet (43).

4. An omnidirectional antenna structure according to claim 3, characterized in that: A hot melt column (5) that presses against the locking rod (41) is detachably provided on the protective housing (1) through a connecting device (6). The temperature at which the hot melt column (5) melts is lower than the temperature at which the temperature detector (44) de-energizes the electromagnet (43).

5. The omnidirectional antenna structure according to claim 4, characterized in that: The connecting device (6) includes: An installation chamber (61) provided on the protective housing (1); A sliding rod (62) provided on the locking rod (41) and extending into the installation chamber (61); A pressing plate (63) provided on the sliding rod (62) and cooperating with the inner side wall of the installation chamber (61) to form an installation cavity (64). The hot melt column (5) is snap-fitted into the installation cavity (64) and presses against the pressing plate (63).

6. The omnidirectional antenna structure according to claim 5, wherein: A collecting assembly (7) for collecting the melted hot melt column (5) is provided on the installation chamber (61). The collecting assembly (7) includes: A support block (71) provided on the lower surface of the installation chamber (61); A collecting box (72) snap-fitted onto the support block (71). A through hole (74) is provided on the installation chamber (61) for the melted hot melt column (5) to fall into the collecting box (72).

7. An omnidirectional antenna structure according to claim 1, characterized in that: The pushing assembly (32) includes: A pushing block (33) provided on the protective door (22) and used to push the protective door (22) to move back; A first positioning block (34) and a second positioning block (35) respectively provided on the slide rail (31) and the protective housing (1). When the antenna body (11) moves outside the protective housing (1), the protective door (22) abuts against the first positioning block (34) and the mounting seat (21) abuts against the second positioning block (35) for positioning.

8. An omnidirectional antenna structure according to claim 1, characterized in that: An installation opening (13) is provided at one end of the protective housing (1) away from the installation hole (12). An installation cover (14) that blocks the installation opening (13) is threadedly connected to the installation opening (13). A socket (15) for signal transmission is provided on the installation cover (14). A signal wiring (16) that is connected to the antenna body (11) and made of a soft material for signal transmission is provided on the socket (15).

9. An omnidirectional antenna structure according to claim 8, characterized in that: A ball that rolls on the slide rail (31) is rotatably provided on the protective door (22). A guiding ring (141) for guiding the synchronous rope (18) is provided on the installation cover (14).

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