A ceiling antenna

Abstract

The present invention belongs to the technical field of antennas for mobile communication systems, and specifically relates to a ceiling antenna. The ceiling antenna comprises an antenna body, a groove is provided at the center of the top of the antenna body, a column is fixedly connected to the groove wall at the bottom of the groove, a feeder connector is connected to the top of the column, a sealing plate is slidably sleeved on the column, and an annular magnet is fixedly connected to the sealing plate and the opposite side of the antenna body. The present invention presses the push ring to enable the first clamping plate and the second clamping plate to deflect in the direction of the movable tube. When both can be inserted into the holes provided on the ceiling, the thumb is released. At this time, the movable tube drives the first clamping plate and the second clamping plate to return to their original positions under the pulling force of the first spring, so that the sealing plate can be clamped with the ceiling under the action of the second clamping plate. Finally, the antenna body is adsorbed on the sealing plate by the annular magnet, so that the antenna body can be quickly installed, and the antenna body can also be easily disassembled and maintained.

Description

Technical Field

[0001] The invention belongs to the technical field of mobile communication system antennas, and in particular relates to a ceiling antenna. Background Art

[0002] Ceiling antenna is a type of mobile communication system antenna, mainly used for indoor signal coverage. In the 3G era, indoor voice, data, and high-speed multimedia services are densely distributed, and indoor distribution systems will play an important role in the construction and optimization of 3G networks.

[0003] There are two main types of installation for existing indoor ceiling antennas. One is to attach the antenna body to the steel beam structure inside the building through a magnet. This installation method is more convenient when the installation box is disassembled. The other is to install it on the ceiling of the building. This method requires opening a hole in the ceiling before installation, then taking out the connecting wire placed on the top of the ceiling from the opened hole and connecting it to the feeder connector of the antenna. After the connection is completed, the feeder connector together with the connecting wire is placed on the top of the ceiling, and then the antenna is fixed with screws. However, since the ceiling is mostly made of plastic, when using screws for fixing, on the one hand, the screws are easy to loosen, and on the other hand, the antenna is prone to malfunction during use. Therefore, when the antenna needs to be removed for maintenance, it cannot be disassembled quickly. In addition, repeated disassembly and assembly of screws will also damage the ceiling, affecting the appearance. Summary of the invention

[0004] In view of the above problems, the present invention provides a ceiling-mounted antenna to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ceiling antenna, comprising an antenna body, a groove is opened at the center of the top of the antenna body, a column is fixedly connected to the groove wall at the bottom of the groove, a feeder connector is connected to the top of the column, a sealing plate is slidably sleeved on the column, an annular magnet is fixedly connected to the sealing plate and the opposite side of the antenna body, a support tube is slidably sleeved on the column, the bottom of the support tube is fixedly connected to the sealing plate, a movable tube is slidably inserted into the top of the support tube, clamping devices are provided on both sides of the movable tube, and pushing devices are provided on the front and back sides of the movable tube.

[0006] Furthermore, the clamping device includes a first clamping plate and a second clamping plate, the first clamping plate is located on the top of the second clamping plate, and the length of the first clamping plate is greater than the length of the second clamping plate, the first clamping plate and the second clamping plate are hinged on opposite sides together, and the angle between the first clamping plate and the movable tube is greater than the angle between the second clamping plate and the supporting tube, the top of the first clamping plate is hinged to the movable tube near the top, and the bottom of the second clamping plate is hinged to the supporting tube near the bottom.

[0007] Furthermore, the pushing device includes a push rod, which is slidably inserted into the sealing plate, and the top of the push rod is fixedly connected to a connecting plate. A limiting groove is penetrated through the support tube at the corresponding position of the connecting plate, and the top of the limiting groove is connected to the top of the support tube, and the connecting plate is fixedly connected to the movable tube through the limiting groove. The part of the push rod located at the top of the sealing plate is sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the sealing plate and the connecting plate, and the bottom of the two push rods is fixedly connected to the same push ring.

[0008] Furthermore, a movable plate is provided on the side where the first clamping plate and the second clamping plate are separated, and two sliding grooves are provided in parallel and penetrate the first clamping plate or the second clamping plate at the corresponding position of the movable plate, and a U-shaped plate is provided on the opposite side of the first clamping plate and the second clamping plate, and the two ends of the U-shaped plate are respectively fixedly connected to the corresponding movable plate through two sliding grooves, and two second springs are provided on the side of the U-shaped plate close to the hinge point of the first clamping plate and the second clamping plate, respectively, and the two second springs are respectively located in the two sliding grooves, and the two ends of the second spring are respectively fixedly connected to the U-shaped plate and the inner wall of the sliding groove.

[0009] Furthermore, a pressure plate is hinged at the bottom of the movable plate on the second clamping plate, and a third spring is connected to the side of the pressure plate opposite to the movable plate.

[0010] Furthermore, slots are symmetrically provided on the front and rear sides of the sealing plate, an insert plate is slidably inserted into the slot, and a portion of the insert plate is located outside the slot, the top of the insert plate and the slot wall at the top of the slot are gradually inclined downward toward the center of the sealing plate, and a fourth spring is connected between one end of the insert plate located in the slot and the slot.

[0011] Furthermore, a funnel tube is fixedly connected to the top of the movable tube, and the funnel tube is made of elastic plastic.

[0012] Furthermore, the length of the movable plate is greater than the length of the corresponding first card plate or the second card plate, and a side of the movable plate close to the hinge point of the first card plate and the second card plate is flush with the end of the corresponding first card plate or the second card plate.

[0013] Furthermore, in a natural state, the bottom of the plug plate is flush with the bottom of the annular magnet on the sealing plate, and when the plug plate is fully inserted into the slot, the bottom of the plug plate is lower than the bottom of the annular magnet on the sealing plate.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention presses the push ring to gradually deflect the first clamping plate and the second clamping plate toward the direction where the movable tube is located. When both can be inserted into the hole on the ceiling, the thumb is released. At this time, the movable tube drives the first clamping plate and the second clamping plate to return to their original positions under the pulling force of the first spring, so that the sealing plate can be clamped with the ceiling under the action of the second clamping plate. Finally, the annular magnet is used to make the antenna body and the sealing plate adsorbed together, thereby realizing the rapid installation of the antenna body and facilitating the disassembly and maintenance of the antenna body.

[0016] 2. The present invention installs a movable plate on the first card plate and the second card plate. When the hole is small, the movable plates on the first card plate and the second card plate will first contact the hole wall during the process of disassembling the sealing plate, so that the movable plate can compress the corresponding second spring, and the hinge point of the first card plate and the second card plate can be blocked by the movable plate, thereby ensuring that the hole will not be damaged by the hinge of the first card plate and the second card plate during the process of disassembling the sealing plate;

[0017] 3. The present invention installs a pressure plate at the bottom of the movable plate on the second card plate. When the first card plate and the second card plate are placed in the holes opened on the ceiling, the thumb is released. At this time, the second card plate is gradually deflected downward at the hinge point with the first card plate under the action of the first spring. In this process, the pressure plate is gradually driven by the second card plate to approach the top of the ceiling. When the pressure plate contacts the ceiling, the third spring gradually begins to shrink, and as the second card plate continues to deflect downward, the pressure plate can be pressed against the ceiling under the reaction force of the third spring, thereby ensuring that the sealing plate can fit more closely to the ceiling and ensuring that the antenna body will not shake after the antenna body is installed.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a first three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 The present invention Figure 1 A magnified view of part A;

[0022] Figure 3 is a second three-dimensional structural schematic diagram of the present invention;

[0023] Figure 4 The present invention Figure 3 A magnified view of part B;

[0024] Figure 5 The present invention Figure 3 Enlarged view of part C;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the antenna body in the present invention;

[0026] Figure 7 It is a side sectional view of the sealing plate in the present invention.

[0027] In the figure: 1. antenna body; 2. column; 3. feeder connector; 4. sealing plate; 5. annular magnet; 6. support tube; 7. movable tube; 8. clamping device; 81. first clamping plate; 82. second clamping plate; 9. pushing device; 91. push rod; 92. connecting plate; 93. first spring; 94. push ring; 10. movable plate; 11. slide groove; 12. U-shaped plate; 13. second spring; 14. pressure plate; 15. third spring; 16. plug plate; 17. fourth spring; 18. funnel tube. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present invention provides Figure 1-7 A ceiling antenna shown in the figure comprises an antenna body 1, a groove is provided at the center of the top of the antenna body 1, a column 2 is fixedly connected to the groove wall at the bottom of the groove, a feeder connector 3 is connected to the top of the column 2, a sealing plate 4 is slidably sleeved on the column 2, an annular magnet 5 is fixedly connected to the sealing plate 4 and the side opposite to the antenna body 1, a support tube 6 is slidably sleeved on the column 2, the bottom of the support tube 6 is fixedly connected to the sealing plate 4, a movable tube 7 is slidably inserted on the top of the support tube 6, clamping devices 8 are provided on both sides of the movable tube 7, and pushing devices 9 are provided on the front and rear sides of the movable tube 7, a funnel tube 18 is fixedly connected to the top of the movable tube 7, and the funnel tube 18 is made of elastic plastic;

[0030] When the antenna body 1 needs to be installed on the steel beam structure of the building, the sealing plate 4 is first removed from the column 2, and then the antenna body 1 is directly adsorbed on the steel beam structure of the building through the annular magnet 5 on the top of the antenna body 1;

[0031] When the antenna body 1 needs to be installed on the ceiling of a building, first remove the sealing plate 4 from the column 2, and at the same time open a hole of a suitable size on the ceiling of the building, then take the connecting wire placed on the top of the ceiling out of the hole, then insert the connector part of the connecting wire into the movable tube 7 and the support tube 6 from the top of the movable tube 7, and make the connector of the connecting wire be located at the bottom of the sealing plate 4, then use two hands to hold both sides of the sealing plate 4 respectively, and the thumbs of both hands push the pushing device 9 upward from the bottom of the sealing plate 4 at the same time, so that the clamping devices 8 on both sides of the movable tube 7 can simultaneously shrink toward the movable tube 7, and the movable tube 7 gradually moves upward under the push of the two clamping devices 8. When the distance between the distal ends of the two clamping devices 8 is smaller than the diameter of the hole to be opened, insert the movable tube 7 together with the clamping device 8 into the hole. When the clamping device 8 is completely inserted into the hole, release the two thumbs. At this time, the two clamping devices 8 are clamped together with the hole wall under the action of the pushing device 9, thereby fixing the sealing plate 4 on the ceiling. Then, connect the connector of the connecting wire with the feeder connector 3. After the connection is completed, push the antenna body 1 upward, so that the column 2 together with the feeder connector 3 can be inserted into the support tube 6 from the bottom of the sealing plate 4. Finally, the annular magnet 5 on the top of the antenna body 1 is adsorbed with the annular magnet 5 at the bottom of the sealing plate 4, and the installation operation of the antenna body 1 can be completed.

[0032] When the antenna body 1 needs to be maintained, first separate the annular magnet 5 on the antenna body 1 from the annular magnet 5 on the sealing plate 4, and then pull the antenna body 1 downward, so that the feeder connector 3 and the connector of the connecting wire can move toward the bottom of the sealing plate 4 under the pull of the antenna body 1. During this process, the elastic funnel tube 18 can protect the feeder connector 3 and the connector of the connecting wire to avoid scratches between the connector parts of the two and the top edge of the movable tube 7. Then separate the feeder connector 3 and the connector of the connecting wire to complete the removal operation of the antenna body 1. Since this method does not require the use of screws, it improves the efficiency of disassembly and assembly of the antenna body 1 while avoiding repeated damage to the ceiling due to daily maintenance. At the same time, the sealing plate 4 can also cover the holes on the ceiling to ensure the beauty of the ceiling.

[0033] As shown in the figure, the clamping device 8 includes a first clamping plate 81 and a second clamping plate 82, the first clamping plate 81 is located on the top of the second clamping plate 82, and the length of the first clamping plate 81 is greater than the length of the second clamping plate 82, the first clamping plate 81 and the second clamping plate 82 are hinged together on opposite sides, and the angle between the first clamping plate 81 and the movable tube 7 is greater than the angle between the second clamping plate 82 and the support tube 6, the top of the first clamping plate 81 is hinged to the position of the movable tube 7 near the top, and the bottom of the second clamping plate 82 is hinged to the position of the support tube 6 near the bottom;

[0034] In the process of squeezing the pushing device 9 with the thumb, the movable tube 7 gradually moves upward under the action of the pushing device 9, and the top of the first clamping plate 81 moves upward together with the movable tube 7. However, since the first clamping plate 81 and the second clamping plate 82 are hinged together, the bottom of the first clamping plate 81 begins to drive the top of the second clamping plate 82 to deflect toward the direction of the support tube 6 due to the restriction of the second clamping plate 82, so that the distance between the hinge points of the first clamping plate 81 and the second clamping plate 82 on both sides of the movable tube 7 gradually decreases. When the distance is less than the skylight, the movable tube 7 is moved upward. When the diameter of the hole on the ceiling is measured, insert the column 2 together with the first clamping plate 81 and the second clamping plate into the hole. During this process, when the hinge points of the first clamping plate 81 and the second clamping plate 82 are higher than the edge of the hole, slowly release the two thumbs, so that the first clamping plate 81 and the second clamping plate 82 gradually return to their original positions under the action of the pushing device 9. During this process, the second clamping plate 82 is gradually pressed together with the edge of the hole, so that the sealing plate 4 can be fixed on the ceiling under the restriction of the second clamping plate 82, thereby facilitating the subsequent installation operation of the antenna body 1.

[0035] like Figure 1-5 As shown, the pushing device 9 includes a push rod 91, which is slidably inserted into the sealing plate 4, and a connecting plate 92 is fixedly connected to the top of the push rod 91. A limiting groove is penetrated through the support tube 6 at the corresponding position of the connecting plate 92, and the top of the limiting groove is communicated with the top of the support tube 6, and the connecting plate 92 is fixedly connected to the movable tube 7 through the limiting groove. The part of the push rod 91 located at the top of the sealing plate 4 is sleeved with a first spring 93, and the two ends of the first spring 93 are respectively fixedly connected to the sealing plate 4 and the connecting plate 92, and the bottoms of the two push rods 91 are fixedly connected to the same push ring 94;

[0036] When installing the sealing plate 4, use both thumbs to push the push ring 94 at the same time, so that the movable tube 7 can move upward under the push of the push rod 91. During this process, the first spring 93 is gradually stretched, and the hinge points of the two first clamping plates 81 and the second clamping plates 82 can gradually move toward the support tube 6, so that the distance between the hinge points of the two first clamping plates 81 and the second clamping plates 82 can gradually get closer, so as to facilitate the insertion of the first clamping plates 81 and the second clamping plates 82 into the holes opened on the ceiling;

[0037] After the first clamping plate 81 and the second clamping plate 82 are inserted into the holes, slowly release the two thumbs. At this time, the movable tube 7 can gradually return to its original position under the action of the first spring 93, and the first clamping plate 81 and the second clamping plate 82 can return to their original positions together under the action of the movable tube 7. At this time, the second clamping plate 82 can gradually be clamped together with the ceiling, thereby realizing the installation operation of the sealing plate 4.

[0038] like Figure 1-5 As shown, a movable plate 10 is provided on the side where the first clamping plate 81 and the second clamping plate 82 are separated, and two sliding grooves 11 are parallelly penetrated on the first clamping plate 81 or the second clamping plate 82 at the corresponding position of the movable plate 10, and a U-shaped plate 12 is provided on the opposite side of the first clamping plate 81 and the second clamping plate 82, and the two ends of the U-shaped plate 12 are respectively fixedly connected to the corresponding movable plate 10 through the two sliding grooves 11, and the U-shaped plate 12 is provided with two second springs 13 on the side close to the hinge point of the first clamping plate 81 and the second clamping plate 82, and the two second springs 13 are respectively located in the two sliding grooves 11, and the two ends of the second spring 13 are respectively fixedly connected to the U-shaped plate 12 and the inner wall of the sliding groove 11, and the length of the movable plate 10 is greater than the length of the corresponding first clamping plate 81 or the second clamping plate 82, and the side of the movable plate 10 close to the hinge point of the first clamping plate 81 and the second clamping plate 82 is flush with the end of the corresponding first clamping plate 81 or the second clamping plate 82;

[0039] During the installation of the sealing plate 4, when the hole is small, the movable plates 10 on the two first clamps 81 will first contact the hole wall of the hole. At this time, the movable plates 10 on the first clamp 81 will move downward along the surface of the first clamp 81. At the same time, the second spring 13 is gradually compressed by the U-shaped plate 12, so that the bottom of the movable plate 10 on the first clamp 81 can be lower than the hinge point of the first clamp 81 and the second clamp 82. At this time, the movable plate 10 on the first clamp 81 can protect the hinge point of the first clamp 81 and the second clamp 82, thereby ensuring that the opened hole will not be damaged by the hinge of the first clamp 81 and the second clamp 82 during the installation process;

[0040] Similarly, when the sealing plate 4 needs to be removed from the ceiling, the movable plate 10 on the second clamping plate 82 can contact the hole first, thereby moving upward along the second clamping plate 82, and then protecting the hinge point of the first clamping plate 81 and the second clamping plate 82, thereby ensuring that during the removal of the sealing plate 4, the opened hole will not be damaged by the hinge of the first clamping plate 81 and the second clamping plate 82.

[0041] like Figure 1 , Figure 3 and Figure 5As shown, a pressing plate 14 is hingedly connected to the bottom of the movable plate 10 located on the second clamping plate 82, and a third spring 15 is connected to the side of the pressing plate 14 opposite to the movable plate 10;

[0042] When the first clamping plate 81 and the second clamping plate 82 are placed in the holes opened on the ceiling, release the thumb. At this time, the second clamping plate 82 is gradually deflected downward at the hinge point with the first clamping plate 81 under the action of the first spring 93. During this process, the pressing plate 14 is gradually driven by the second clamping plate 82 to approach the top of the ceiling. When the pressing plate 14 contacts the ceiling, the third spring 15 gradually begins to shrink, and as the second clamping plate 82 continues to deflect downward, the pressing plate 14 can be pressed against the ceiling under the reaction force of the third spring 15, thereby ensuring that the sealing plate 4 can fit more closely to the ceiling, ensuring that the antenna body 1 will not shake after the antenna body 1 is installed.

[0043] like Figure 1 , Figure 3 and Figure 7 As shown, slots are symmetrically provided on the front and rear sides of the sealing plate 4, and a plug plate 16 is slidably inserted in the slot, and a part of the plug plate 16 is located outside the slot, and the top of the plug plate 16 and the slot wall at the top of the slot are gradually inclined downward toward the center of the sealing plate 4, and a fourth spring 17 is connected between one end of the plug plate 16 located in the slot and the slot, and the bottom of the plug plate 16 in the natural state is flush with the bottom of the annular magnet 5 on the sealing plate 4, and when the plug plate 16 is fully inserted into the slot, its bottom is lower than the bottom of the annular magnet 5 on the sealing plate 4;

[0044] When it is necessary to separate the antenna body 1 from the sealing plate 4, since the antenna body 1 is adsorbed together with the sealing plate 4 by the annular magnet 5, when the antenna body 1 is pulled, the sealing plate 4 will move downward together under the pulling force. At this time, the antenna body 1 can be supported from the front and rear directions of the front antenna body 1 with two hands, and then the two plug plates 16 can be pressed simultaneously with two index fingers or other fingers, so that the plug plates 16 gradually move into the slots under the action of pressure. During this process, the fourth spring 17 is gradually compressed, and as the plug plates 16 are continuously inserted, the inclined surface at the top of the plug plates 16 interacts with the inclined surface at the top of the slot, so that the bottom of the shovel plate gradually becomes lower than the bottom of the sealing plate 4, so that the plug plates 16 have a downward thrust on the antenna body 1, and finally the antenna body 1 can be separated from the sealing plate 4 under the action of the thrust and supported by two hands. In this way, pulling of the sealing plate 4 when disassembling the antenna can be avoided, and the disassembly efficiency of the antenna body 1 is also improved.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ceiling antenna, comprising an antenna body (1), characterized in that: A groove is provided at the center of the top of the antenna body (1), a column (2) is fixedly connected to the groove wall at the bottom of the groove, a feeder connector (3) is connected to the top of the column (2), a sealing plate (4) is slidably sleeved on the column (2), an annular magnet (5) is fixedly connected to the sealing plate (4) and the antenna body (1) on the opposite side, a support tube (6) is slidably sleeved on the column (2), the bottom of the support tube (6) is fixedly connected to the sealing plate (4), a movable tube (7) is slidably inserted at the top of the support tube (6), clamping devices (8) are provided on both sides of the movable tube (7), and a pushing device (9) is provided on the front and rear sides of the movable tube (7); The clamping device (8) comprises a first clamping plate (81) and a second clamping plate (82), wherein opposite sides of the first clamping plate (81) and the second clamping plate (82) are hinged together, the top of the first clamping plate (81) is hinged to a position close to the top of the movable tube (7), and the bottom of the second clamping plate (82) is hinged to a position close to the bottom of the support tube (6); The pushing device (9) comprises a push rod (91), the push rod (91) is slidably inserted into the sealing plate (4), a connecting plate (92) is fixedly connected to the top of the push rod (91), a limiting groove is penetrated through the support tube (6) at a position corresponding to the connecting plate (92), and the connecting plate (92) is fixedly connected to the movable tube (7) via the limiting groove, and the bottoms of the two push rods (91) are fixedly connected to the same push ring (94).

2. A ceiling antenna according to claim 1, characterized in that: The first clamping plate (81) is located on top of the second clamping plate (82), the length of the first clamping plate (81) is greater than the length of the second clamping plate (82), and the angle between the first clamping plate (81) and the movable tube (7) is greater than the angle between the second clamping plate (82) and the supporting tube (6).

3. A ceiling antenna according to claim 2, characterized in that: The top of the limiting groove is communicated with the top of the support tube (6); the portion of the push rod (91) located at the top of the sealing plate (4) is sleeved with a first spring (93); and the two ends of the first spring (93) are respectively fixedly connected to the sealing plate (4) and the connecting plate (92).

4. A ceiling antenna according to claim 3, characterized in that: A movable plate (10) is provided on one side of the first clamping plate (81) and the second clamping plate (82) separated from each other. Two slide grooves (11) are provided in parallel and penetrate the first clamping plate (81) or the second clamping plate (82) at the corresponding position of the movable plate (10). A U-shaped plate (12) is provided on one side of the first clamping plate (81) and the second clamping plate (82). Two ends of the U-shaped plate (12) are respectively fixedly connected to the corresponding movable plate (10) through the two slide grooves (11). Two second springs (13) are provided on one side of the U-shaped plate (12) close to the hinge point of the first clamping plate (81) and the second clamping plate (82). The two second springs (13) are respectively located in the two slide grooves (11), and two ends of the second spring (13) are respectively fixedly connected to the U-shaped plate (12) and the inner wall of the slide groove (11).

5. A ceiling antenna according to claim 4, characterized in that: A pressing plate (14) is hingedly connected to the bottom of the movable plate (10) located on the second clamping plate (82), and a third spring (15) is connected to the side of the pressing plate (14) opposite to the movable plate (10).

6. A ceiling antenna according to claim 5, characterized in that: The sealing plate (4) is symmetrically provided with slots on the front and rear sides, and a plug plate (16) is slidably inserted into the slot, and a portion of the plug plate (16) is located outside the slot, and the top of the plug plate (16) and the slot wall at the top of the slot are gradually inclined downward in a direction close to the center of the sealing plate (4), and a fourth spring (17) is connected between one end of the plug plate (16) located in the slot and the slot.

7. A ceiling antenna according to claim 6, characterized in that: A funnel tube (18) is fixedly connected to the top of the movable tube (7), and the funnel tube (18) is made of elastic plastic.

8. A ceiling antenna according to claim 7, characterized in that: The length of the movable plate (10) is greater than the length of the corresponding first clamping plate (81) or the second clamping plate (82), and a side of the movable plate (10) close to the hinge point of the first clamping plate (81) and the second clamping plate (82) is flush with the end of the corresponding first clamping plate (81) or the second clamping plate (82).

9. A ceiling antenna according to claim 8, characterized in that: In a natural state, the bottom of the insert plate (16) is flush with the bottom of the annular magnet (5) on the sealing plate (4), and when the insert plate (16) is fully inserted into the slot, the bottom of the insert plate (16) is lower than the bottom of the annular magnet (5) on the sealing plate (4).

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