A universal ceiling antenna

Abstract

The present invention provides a universal ceiling antenna, which belongs to the field of antenna technology. The universal ceiling antenna includes: an antenna cover body, in which the antenna body is installed; an adjustment plate, which is rotatably connected to the antenna cover body, and a first mounting hole is provided in the center of the adjustment plate; a wire-passing outer cylinder, which is fixedly connected to the antenna cover body and passes through the first mounting hole, and the wire-passing outer cylinder is axially penetrated and has multiple through-holes at the side wall; a wire-passing inner cylinder, which is axially penetrated and penetrates the inside of the wire-passing outer cylinder, and the lower part of the side wall of the wire-passing inner cylinder is provided with an external threaded portion extending from the through-hole and is threadedly connected to the first mounting hole, and the upper part of the side wall of the wire-passing inner cylinder is provided with at least two protruding clamping arms, and the free end of the clamping arm is provided with a rounded corner, each clamping arm extends from each through-hole, and the clamping arm is used to clamp at the mounting hole of the ceiling. The universal ceiling antenna of the present invention can adapt to different ceiling thicknesses.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a universal ceiling-mounted antenna. Background Art

[0002] Most existing indoor antennas (generally omnidirectional antennas) are installed by ceiling mounting. Specifically, multiple mounting holes are opened on the indoor ceiling, and then the ceiling antenna is fixed to the mounting holes on the ceiling using expansion screws or bolts and nuts. This installation method requires the use of auxiliary tools and requires high-altitude work, so the assembly and disassembly process is relatively complicated and difficult.

[0003] In order to reduce the difficulty of installation, there is also an installation method of clamping the ceiling antenna on the ceiling by means of clipping. However, due to the different thicknesses of the ceilings, the same ceiling antenna cannot be adapted to various ceiling thicknesses, which makes the versatility of the clip-on ceiling antenna poor, and different clips need to be customized for different ceiling thicknesses. Summary of the invention

[0004] An object of the first aspect of the present invention is to provide a universal ceiling antenna that can adapt to different ceiling thicknesses.

[0005] Another object of the present invention is to simplify the installation process of the ceiling antenna.

[0006] A further object of the present invention is to further increase the versatility and flexibility of antenna installation.

[0007] An embodiment of the present invention provides a universal ceiling antenna, comprising:

[0008] A radome body, in which an antenna body is installed;

[0009] An adjustment plate is rotatably connected to the antenna cover body, and a first mounting hole is provided at the center of the adjustment plate;

[0010] A wire-passing outer cylinder is fixedly connected to the antenna cover body and passes through the first mounting hole, wherein the wire-passing outer cylinder is axially through-through and has a plurality of through-holes on its side wall;

[0011] The wire-passing inner cylinder has an axially penetrated interior and is arranged inside the wire-passing outer cylinder. The lower part of the side wall of the wire-passing inner cylinder is provided with an external threaded portion extending out of the through-port and forming a threaded connection with the first mounting hole. The upper part of the side wall of the wire-passing inner cylinder is provided with at least two extending clamping arms, and the free ends of the clamping arms are provided with rounded corners. Each of the clamping arms extends out of each of the through-ports, and the clamping arms are used to clamp onto the mounting port of the ceiling. The adjustment plate rotates relative to the wire-passing inner cylinder and rises to a target height to adapt to different ceiling thicknesses.

[0012] Optionally, each of the clamping arms and the axial direction of the wire-passing inner cylinder has a first preset angle, so that the clamping arm forms a posture that is easy to pass through the installation opening;

[0013] A driving airbag fixed to the wire outer cylinder is provided in the through hole from which the clamping arm extends. The driving airbag is used to push the clamping arm out to a second preset angle when the adjustment plate moves to the target height so that the clamping arm is clamped to the ceiling.

[0014] Optionally, a right-angle portion with a recess is provided at the free end of the clamping arm, and the right-angle portion includes a first plane and a second plane perpendicular to each other, and the first plane faces downward and is in a horizontal state when the adjustment plate is at the target height.

[0015] Optionally, the clamping arm has a tapered portion whose width is smaller than a preset value, and the tapered portion is used to form a rotation point of the clamping arm.

[0016] Optionally, the clamping arm is provided with a plurality of continuous right-angle portions, and the angle between the first plane of the right-angle portion and the horizontal plane increases along the direction away from the axis of the inner cylinder.

[0017] Optionally, the driving airbag is further connected to an air outlet pipe, and the air outlet pipe is detachably connected to an inflatable bag, and the inflatable bag is used to control the initial volume of the driving airbag to adapt to the installation ports of different sizes.

[0018] Optionally, the antenna cover body includes a cover body and a reflective plate that are fixedly connected.

[0019] Optionally, an annular convex strip is formed on the outer peripheral surface of the cover body;

[0020] The adjustment plate comprises a base plate body and an annular hook portion located below the edge of the base plate body, and the annular hook portion is used for hanging the annular convex strip.

[0021] Optionally, the base plate body is frame-shaped.

[0022] Optionally, the external threaded portion and the clamping arm extend out from the same through opening.

[0023] According to the first aspect of the present invention, the universal ceiling antenna includes a fixedly connected wire-passing outer cylinder and an antenna cover body, a wire-passing inner cylinder that is anti-rotationally connected to the wire-passing outer cylinder, and an adjustment plate that is rotatably connected to the antenna cover body and threadedly connected to the wire-passing outer cylinder. Therefore, the antenna installation that matches different ceiling thicknesses can be achieved by means of the clamping arm at the wire-passing inner cylinder and the screwing adjustment of the adjustment plate, and the installation method is simple and easy.

[0024] According to the second aspect of the present invention, the driving airbag is used as the driving component of the clamping arm. When the adjustment plate is screwed to adapt to the thickness of the ceiling, the driving airbag is squeezed by the descending stroke of the inner tube relative to the outer tube, so that the clamping arm is expanded outward to clamp the ceiling. The antenna is installed efficiently and conveniently without the need for the clamping arm to be hard-stuck to the installation port of the ceiling, so there is no damage to the ceiling. When disassembling, only the adjustment plate needs to be screwed in the opposite direction, which is simple to operate.

[0025] Furthermore, the stroke of the adjustment plate from the initial state to the target height determines the degree of compression of the driving airbag, that is, the force applied by the driving airbag to the clamping arm, and the position of the rotation point determines the rotation point of the clamping arm. Therefore, by setting the position of the rotation point and the stroke of the adjustment plate when it is at the target height, the angle of the clamping arm can be determined, which facilitates precise control of the right-angle portion to fit well with the ceiling.

[0026] Furthermore, by providing a plurality of clamping arms, adaptation to installation openings of different sizes on the ceiling can be achieved, that is, the clamping arms can be in an expanded state at different angles by controlling the stroke of the adjustment plate so that the corresponding right-angle portions cooperate with the installation openings.

[0027] Furthermore, the driving airbag is detachably connected to the inflatable bag, and the original volume of the driving airbag can be controlled by the inflatable bag, so that the clamping arm has different expansion degrees. Combined with the above-mentioned multiple right-angle portions, the same antenna can also adapt to a variety of ceiling installation port sizes, that is, the antenna can adapt to different ceiling thicknesses and ceiling installation port sizes, further increasing the versatility and flexibility of antenna installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a universal ceiling antenna according to an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A cross-sectional view of a universal ceiling antenna in FIG.

[0030] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0031] Figure 4 for Figure 1 An exploded diagram of a universal ceiling antenna in FIG.

[0032] Figure 5 is a structural schematic diagram of a universal ceiling antenna according to another embodiment of the present invention when the clamping arm is in an initial state;

[0033] Figure 6is a schematic structural diagram of a universal ceiling antenna according to another embodiment of the present invention when the clamping arm is in an unfolded state;

[0034] Figure 7 A partial enlarged view of a clamping arm of a universal ceiling antenna according to another embodiment of the present invention;

[0035] Reference numerals:

[0036] 100-universal ceiling antenna, 10-radome body, 11-cover body, 111-annular convex strip, 112-mounting column, 12-reflecting plate, 121-second mounting hole, 20-adjusting plate, 201-first mounting hole, 21-bottom plate body, 22-annular hook, 221-chamfer, 30-through-line outer cylinder, 301-through opening, 31-annular step portion, 40-through-line inner cylinder, 41-external threaded portion, 42-clamping arm, 421-rounded corner, 43-right-angle portion, 431-first plane, 432-second plane, 44-reduction portion, 50-driving airbag. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0042] Figure 1 FIG. 1 is a schematic structural diagram of a universal ceiling antenna 100 according to an embodiment of the present invention. Figure 2 for Figure 1 A cross-sectional view of a universal ceiling antenna 100 is shown in FIG. Figure 4 for Figure 1 FIG. 1 is a schematic diagram of an exploded view of a universal ceiling antenna 100. Figure 1 As shown, in one embodiment, the universal ceiling antenna 100 of the present invention includes a radome body 10, an adjustment plate 20, a wire-passing outer cylinder 30 and a wire-passing inner cylinder 40. An antenna body (not shown) is installed inside the radome body 10. The adjustment plate 20 is rotatably connected to the radome body 10, and a first mounting hole 201 is provided at the center of the adjustment plate 20 (see Figure 4 ). The outer tube 30 is fixedly connected to the antenna cover body 10 and passes through the first mounting hole 201. The outer tube 30 is axially penetrated and has a plurality of through holes 301 on the side wall. The inner tube 40 is axially penetrated and is arranged inside the outer tube 30. The lower part of the side wall of the inner tube 40 is provided with an external threaded portion 41 extending from the through hole 301 and forming a threaded connection with the first mounting hole 201, that is, the first mounting hole 201 is a threaded hole (see Figure 2). The wire-passing inner cylinder 40 and the wire-passing outer cylinder 30, which are both axially penetrated, can facilitate the passage of the cables of the antenna body. The upper part of the side wall of the wire-passing inner cylinder 40 is provided with at least two protruding clamping arms 42, and the free ends of the clamping arms 42 are provided with rounded corners 421. Each clamping arm 42 protrudes from each through-opening 301. The clamping arm 42 is used to clamp to the installation opening of the ceiling. The adjustment plate 20 rotates relative to the wire-passing inner cylinder 40 and rises to the target height to adapt to different ceiling thicknesses. Here, the clamping arm 42 and the external threaded portion 41 may be located at one through-opening 301, or may not be located at the same through-opening 301. The number of external threaded portions 41 and the number of clamping arms 42 may be the same or different, and there is no limitation here. When the clamping arm 42 and the external threaded portion 41 are located at the same through-opening 301, the processing of the through-opening 301 at the wire-passing outer cylinder 30 can be simplified.

[0043] When installing the antenna, first insert the top of the antenna into the installation opening of the ceiling so that the multiple clamping arms 42 are located at the top of the ceiling, then fix the antenna cover body 10 (and also fix the wire outer cylinder 30), and screw the adjustment plate 20 forward. Since the clamping arms 42 and the external threaded portion 41 both extend out of the through-hole 301 of the wire outer cylinder 30, the wire inner cylinder 40 is blocked in the rotation direction, so that the adjustment plate 20 can rotate relative to the wire inner cylinder 40. Keep screwing the adjustment plate 20 until the clamping arms 42 and the adjustment plate 20 are clamped on the upper and lower sides of the ceiling respectively, thereby fixing the antenna. When disassembling, since the degree of freedom of the clamping arms 42 is provided with rounded corners 421, the antenna can be removed by applying a certain downward pulling force. Of course, the adjusting plate 20 can also be screwed in the reverse direction to form a distance between the adjusting plate 20 and the ceiling, so that part of the lower end of the clamping arm 42 is exposed at the installation opening of the ceiling, thereby facilitating the operation of the clamping arm 42. The clamping arm 42 can be pressed inward so that it can pass through the installation opening, thereby realizing the disassembly of the antenna.

[0044] The universal ceiling antenna 100 of this embodiment includes a fixedly connected wire-passing outer cylinder 30 and a radome body 10, a wire-passing inner cylinder 40 that is anti-rotationally connected to the wire-passing outer cylinder 30, and an adjustment plate 20 that is rotatably connected to the radome body 10 and threadedly connected to the wire-passing outer cylinder 30. Therefore, the antenna installation matching different ceiling thicknesses can be achieved through the clamping arm 42 at the wire-passing inner cylinder 40 and the screwing adjustment of the adjustment plate 20, and the installation method is simple and easy.

[0045] In one embodiment, if Figure 4As shown, the antenna cover body 10 includes a cover body 11 and a reflector 12 that are fixedly connected. For example, a plurality of mounting posts 112 are provided inside the cover body 11, and the top of the mounting posts 112 abuts against the reflector 12. The reflector 12 is provided with mounting holes corresponding to the mounting posts 112, and the mounting posts 112 are provided with threads inside. Therefore, the cover body 11 and the reflector 12 can be fixedly connected by fasteners passing through the mounting holes of the reflector 12 and forming a threaded connection with the mounting posts 112.

[0046] Furthermore, if Figure 2 As shown, an annular convex strip 111 is formed on the outer peripheral surface of the cover body 11, and the adjustment plate 20 includes a bottom plate body 21 and an annular hook portion 22 located below the edge of the bottom plate body 21, and the annular hook portion 22 is used to hang the annular convex strip 111. By snapping the adjustment plate 20 on the edge of the cover body 11, the rotation connection between the adjustment plate 20 and the cover body 11 can be achieved. Of course, in order to facilitate the snapping, a chamfer 221 can be set at the inner corner of the annular hook portion 22 (see Figure 3 In one embodiment, the bottom plate body 21 is frame-shaped, for example Figure 4 In the figure, the bottom plate body 21 includes an inner ring, an outer ring and a plurality of strips with two ends connecting the inner ring and the outer ring.

[0047] This frame-shaped bottom plate body 21 can reduce weight, facilitate threaded connection between the reflector 12 and the cover body 11 , and has a certain deformation ability, so that the adjustment plate 20 can be easily buckled onto the cover body 11 .

[0048] In one embodiment, a second mounting hole 121 is provided at the reflective plate 12, and an annular step portion 31 protruding radially outward is provided at the bottom of the wire-passing outer cylinder 30. After the wire-passing outer cylinder 30 passes through the second mounting hole 121 of the reflective plate 12, the top surface of the annular step portion 31 abuts against the bottom surface of the reflective plate 12, and then the reflective plate 12 is fixedly connected to the wire-passing outer cylinder 30 by fasteners that pass through both the reflective plate 12 and the annular step portion 31.

[0049] Figure 5 FIG. 4 is a schematic structural diagram of a universal ceiling antenna 100 according to another embodiment of the present invention when the clamping arm 42 is in an initial state. Figure 6 FIG. 4 is a schematic diagram of the structure of the universal ceiling antenna 100 according to another embodiment of the present invention when the clamping arm 42 is in an unfolded state. Figure 5 As shown, in another embodiment, each clamping arm 42 has a first preset angle with the axial direction of the wire-passing inner cylinder 40, so that the clamping arm 42 is in a posture that is easy to pass through the installation port. A driving airbag 50 fixed to the wire-passing outer cylinder 30 is provided in the through hole 301 from which the clamping arm 42 extends. The driving airbag 50 is used to push the clamping arm 42 out to a second preset angle when the adjustment plate 20 moves to the target height (see Figure 6), so that the clamping arm 42 is clamped to the ceiling. Furthermore, the free end of the clamping arm 42 is provided with a right angle portion 43 with a depression, and the right angle portion 43 includes a first plane 431 and a second plane 432 that are perpendicular to each other, and the first plane 431 faces downward and is in a horizontal state when the adjustment plate 20 is at the target height. That is to say, when the clamping arm 42 is in the initial state (the clamping arm 42 and the axial direction of the wire inner cylinder 40 have a first preset angle), the first plane 431 of the right angle portion 43 is not horizontal, but is in Figure 4 In the inclined state, after the adjusting plate 20 is screwed, the wire inner cylinder 40 moves downward relative to the wire outer cylinder 30, thereby squeezing the driving airbag 50, and the driving airbag 50 makes the clamping arm 42 extend outward. When the adjusting plate 20 is screwed into place, the first plane 431 of the right-angle portion 43 is in a horizontal state, and the second plane 432 is in a vertical state, so that it is tightly clamped with the installation opening of the ceiling.

[0050] In this embodiment, the driving airbag 50 is used as the driving component of the clamping arm 42. When the adjusting plate 20 is screwed to adapt to the thickness of the ceiling, the driving airbag 50 is squeezed by the descending stroke of the inner tube 40 relative to the outer tube 30, so that the clamping arm 42 is expanded outward to clamp the ceiling, and the antenna is installed efficiently and conveniently. The clamping arm 42 does not need to be hard-stuck to the installation port of the ceiling first, so there is no damage to the ceiling. When disassembling, you only need to screw the adjusting plate 20 in the opposite direction, which is simple to operate.

[0051] In a further embodiment, Figure 5 As shown, the clamping arm 42 has a reduced portion 44 whose width is smaller than a preset value, and the reduced portion 44 is used to form a rotation point of the clamping arm 42. Figure 5 In the illustrated embodiment, the tapered portion 44 is formed by a triangular notch. Of course, in other embodiments not shown, the tapered portion 44 may also be formed by a semicircular notch or the like, which is not limited here.

[0052] The stroke of the adjustment plate 20 from the initial state to the target height determines the compression degree of the driving airbag 50, that is, the force applied by the driving airbag 50 to the clamping arm 42, and the position of the rotation point determines the rotation point of the clamping arm 42. Therefore, by setting the position of the rotation point and the stroke of the adjustment plate 20 when it is at the target height, the angle of the clamping arm 42 can be determined, which facilitates precise control of the right-angle portion 43 to fit well with the ceiling.

[0053] Figure 7 FIG. 4 is a partial enlarged view of the clamping arm 42 of the universal ceiling antenna 100 according to another embodiment of the present invention. Figure 7As shown, in one embodiment, the clamping arm 42 is provided with a plurality of continuous right-angled portions 43, and along the direction away from the axis of the inner cylinder 40, the larger the included angle between the first plane 431 of the right-angled portion 43 and the horizontal plane (this refers to when the clamping arm 42 is in the initial state without the force of the driven airbag 50). Here, the included angles between the right-angled portions 43 of adjacent adjustment plates 20 can be set to be the same or different. Figure 6 In the illustrated embodiment, the angle between adjacent adjustment plates 20 is 15°. In other embodiments, the angle may be other angles, which are not limited here.

[0054] In this embodiment, by setting a plurality of clamping arms 42, it is possible to achieve adaptation to installation openings of different sizes on the ceiling, that is, the clamping arms 42 can be in an expanded state at different angles by controlling the stroke of the adjustment plate 20, so that the corresponding right-angle portion 43 cooperates with the installation opening. It should be noted that, although for each specific application scenario, the thickness of the ceiling is a fixed value, so the distance between the lower end of the clamping arm 42 and the upper surface of the adjustment plate 20 should be a fixed value, but the initial distance between the adjustment plate 20 and the clamping arm 42 has an adjustable space. Assuming that the initial state of the driving airbag 50 is the same when the adjustment plate 20 is at the initial position of different heights, when the adjustment plate 20 is adjusted to a height matching the thickness of the current ceiling, the rising stroke of the adjustment plate 20 is different, so the degree of compression of the driving airbag 50 is different, so that the angle of extension of the clamping arm 42 is different, so that installation openings of different sizes can be adapted within a certain range.

[0055] In a further embodiment, the driving airbag 50 is also connected to an outlet air pipe (not shown), and the outlet air pipe is detachably connected to an inflatable bag (not shown), and the inflatable bag is used to control the initial volume of the driving airbag 50 to adapt to installation ports of different sizes. The inflatable bag here can adopt a hand-held inflatable bag of an inflatable cervical vertebra traction device, and the driving airbag 50 can be inflated by repeatedly tightening and loosening the inflatable bag. Of course, a plug can be provided at the outlet air pipe to block the driving airbag 50 at the end of inflation. The plug here can also adopt a spherical plug commonly used at the trachea of ​​an inflatable cervical vertebra traction device. When the spherical plug is located in the trachea, it can block the trachea, and when it is moved to the cavity on the side of the trachea, it can connect the trachea. Of course, the inflatable bag can also be replaced with other structures that can inflate the driving airbag 50, which is not limited here.

[0056] The driving airbag 50 of the present embodiment is detachably connected to an inflatable bag, and the original volume of the driving airbag 50 can be controlled by the inflatable bag, so that the clamping arm 42 has different expansion degrees. Combined with the above-mentioned multiple right-angle portions 43, the same antenna can also be adapted to a variety of ceiling installation opening sizes, that is, the antenna can adapt to different ceiling thicknesses and ceiling installation opening sizes, further increasing the versatility and flexibility of antenna installation.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A universal ceiling antenna, characterized in that: include: A radome body, in which an antenna body is installed; An adjustment plate is rotatably connected to the antenna cover body, and a first mounting hole is provided at the center of the adjustment plate; A wire-passing outer cylinder is fixedly connected to the antenna cover body and passes through the first mounting hole, wherein the wire-passing outer cylinder is axially through-through and has a plurality of through-holes on its side wall; The wire-passing inner cylinder has an axially penetrated interior and is arranged inside the wire-passing outer cylinder. The lower part of the side wall of the wire-passing inner cylinder is provided with an external threaded portion extending out of the through-hole and forming a threaded connection with the first mounting hole. The upper part of the side wall of the wire-passing inner cylinder is provided with at least two extending clamping arms, and the free ends of the clamping arms are provided with rounded corners. Each of the clamping arms extends out of each of the through-holes, and the clamping arms are used to clamp at the mounting hole of the ceiling. The adjustment plate rotates relative to the wire-passing inner cylinder and rises to a target height to adapt to different ceiling thicknesses. Each of the clamping arms has a first preset angle with the axial direction of the wire-passing inner cylinder, so that the clamping arm is in a posture that is easy to pass through the installation opening; A driving airbag fixed to the wire outer cylinder is provided in the through hole from which the clamping arm extends. The driving airbag is used to push the clamping arm out to a second preset angle when the adjustment plate moves to the target height so that the clamping arm is clamped to the ceiling.

2. The universal ceiling antenna according to claim 1, characterized in that: The free end of the clamping arm is provided with a right-angle portion with a recess, and the right-angle portion includes a first plane and a second plane perpendicular to each other, and the first plane faces downward and is in a horizontal state when the adjustment plate is at the target height.

3. The universal ceiling antenna according to claim 2, characterized in that: The clamping arm has a tapered portion whose width is smaller than a preset value, and the tapered portion is used to form a rotation point of the clamping arm.

4. The universal ceiling antenna according to claim 3, characterized in that: The clamping arm is provided with a plurality of continuous right-angle portions, and the angle between the first plane of the right-angle portion and the horizontal plane is larger as the right-angle portion is farther away from the axis of the through-line inner cylinder.

5. The universal ceiling antenna according to claim 4, characterized in that: The driving airbag is also connected to an air outlet pipe, and the air outlet pipe is detachably connected to an inflatable bag, and the inflatable bag is used to control the initial volume of the driving airbag to adapt to the installation ports of different sizes.

6. The universal ceiling antenna according to claim 1, characterized in that: The antenna cover body comprises a cover body and a reflector plate which are fixedly connected.

7. The universal ceiling antenna according to claim 6, characterized in that: An annular convex strip is formed on the outer peripheral surface of the cover body; The adjustment plate comprises a base plate body and an annular hook portion located below the edge of the base plate body, and the annular hook portion is used for hanging the annular convex strip.

8. The universal ceiling antenna according to claim 7, characterized in that: The bottom plate body is in a frame shape.

9. The universal ceiling antenna according to claim 1, characterized in that: The external threaded portion and the clamping arm extend out from the same through opening.

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