Air-drop type ultrashort wave buoy antenna

Abstract

According to the air-drop type ultra-short wave buoy antenna provided by the utility model, the antenna cabin is formed by gathering the plurality of floating bodies in a storage state, and the antenna assembly is accommodated in the antenna cabin, so that the buoy antenna can be conveniently dropped in an air-drop mode and the like; when the buoy antenna needs to be used for communication, the floating bodies are moved and unfolded through the working assembly and the transmission assembly, so that the stability of the floating bodies on the water surface is enhanced through the multiple unfolded floating bodies; therefore, the problem that a traditional ultra-short wave buoy antenna is possibly influenced by the environment when opened only through a gravity counterweight is solved, and the reliability and the stability of the buoy antenna are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of buoy antennas, and particularly relates to an airdroppable ultra-short wave buoy antenna. Background Technique

[0002] At present, cross-domain communication between air and sea requires the integrated networking of multiple communication methods to achieve data interaction between waterborne nodes and underwater nodes. Waterborne nodes can use satellite communication, short wave, ultra-short wave and other methods for data interaction. The most commonly used and common cross-media communication method between air and sea is relay communication. The communication between waterborne nodes and underwater nodes relies on the combined connection of relay devices such as buoy antennas and ships.

[0003] A buoy antenna refers to an antenna system installed on a buoy body, which is kept on the water surface or at a predetermined depth by the buoyancy of the buoy body to achieve wireless communication functions. Such antennas are widely used in fields such as ocean research, meteorological observation, marine navigation, fishery management, and military communication. Among them, ultra-short wave buoy antennas are more widely favored due to their high gain, high transmission efficiency, and strong adaptability.

[0004] However, the existing ultra-short wave buoy antennas generally adopt a structural design in which the buoy is opened by gravity counterweight after entering the water, and there are problems in use that are easily affected by complex environments. For example, in the case of sea waves, strong winds, etc., there are problems such as being unable to open smoothly or the stability being reduced after opening, which brings inconvenience to the use of ultra-short wave buoy antennas. Content of the Utility Model

[0005] In order to solve the technical problems existing in the background technique, that is, the existing ultra-short wave buoy antennas generally adopt a structural design in which the buoy is opened by gravity counterweight after entering the water and are easily affected by complex environments in use, the utility model provides an airdroppable ultra-short wave buoy antenna.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An air-droppable ultra-short wave buoy antenna, the air-droppable ultra-short wave buoy antenna comprising: a float assembly, a transmission assembly, a working assembly and an antenna assembly; the float assembly including a storage state and a working state; the working assembly being disposed below the transmission assembly and connected to the transmission assembly; the float assembly including a plurality of floats, each float including a first end and a second end facing away from each other, the first end being connected to the transmission assembly; the antenna assembly being fixedly disposed above the transmission assembly; when the float assembly is in the storage state, the second ends of the plurality of floats converge, and the plurality of floats enclose an antenna cabin to accommodate the antenna assembly in the antenna cabin; when the float assembly switches from the storage state to the working state, the working assembly drives the transmission assembly to move, so that the floats are in an unfolded state and the antenna assembly is exposed.

[0008] Optionally, the antenna assembly includes an antenna base, a lower radiator and an antenna steel strip; the antenna base is fixedly disposed above the transmission assembly, and the lower end of the lower radiator is fixedly disposed on the antenna base; the antenna steel strip is fixedly connected to the upper end of the lower radiator; when the float assembly is in the storage state, the antenna steel strip is in a bent state, and the antenna base, the lower radiator and the antenna steel strip in the bent state are accommodated in the antenna cabin; when the float assembly is in the working state, the antenna steel strip extends naturally.

[0009] Optionally, a receiving groove is provided on any one of the plurality of floats, and the receiving groove is provided on a side of the float close to the antenna cabin; the receiving groove extends from the first end to the second end; when the float assembly is in the storage state, the antenna steel strip in the bent state is accommodated in the receiving groove.

[0010] Optionally, the float is a rigid foam float.

[0011] Optionally, the transmission assembly includes a mounting seat, a transmission shaft, a plurality of transmission arms and a plurality of hinge connectors; wherein, the mounting seat is disposed above the working assembly; the transmission shaft is disposed at the central position of the mounting seat; the transmission arm includes a third end and a fourth end facing away from each other, the third end is hingedly connected to the transmission shaft, and the fourth end is movably connected to one of the hinge connectors; one of the hinge connectors is fixedly connected to one of the floats; the antenna assembly is fixedly disposed above the transmission shaft; the working assembly includes a power supply unit and a driving motor, and the power supply unit is electrically connected to the driving motor; the output end of the driving motor is connected to the transmission shaft.

[0012] Optionally, the hinge connector includes a fixed side and a movable side that are hingedly connected. The fixed side is fixedly arranged on the mounting seat. The movable side is hingedly connected to the fourth end and fixedly connected to the first end of one of the floating bodies. When the float assembly is in the storage state, the movable side is perpendicular to the fixed side, causing the second ends of the floating bodies to converge. When the float assembly switches from the storage state to the working state, the drive motor drives the third end to move towards the mounting seat through the transmission shaft, driving the movable side to move to the same plane as the fixed side, so that the floating bodies are in the unfolded state.

[0013] Optionally, a through groove is provided on the floating body, and the through groove extends from the first end to the second end. A reinforcing bar is fixedly arranged on the movable side, and the reinforcing bar is inserted into the through groove to fix the floating body.

[0014] Optionally, among multiple floating bodies, an end cap is provided on the second end of any one of the floating bodies. When the float assembly is in the storage state, the end cap abuts against the second ends of other floating bodies to seal the antenna cabin.

[0015] Optionally, a magnetic attraction device is provided at the second end for causing the floating bodies to converge with each other when the float assembly is in the storage state.

[0016] Optionally, the working component further includes a radio frequency part; the radio frequency part is electrically connected to the antenna component.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) The present utility model provides an air-droppable ultra-short wave buoy antenna. In the storage state, an antenna cabin is formed by converging multiple floating bodies, and the antenna component is accommodated in the antenna cabin, which is convenient for dropping the buoy antenna by means of air dropping, etc. When communication needs to be carried out through the buoy antenna, the floating bodies are moved and unfolded through the working component and the transmission component, so as to enhance the stability on the water surface through multiple unfolded floating bodies. At the same time, since the working component is used to drive the floating bodies, the problem that the traditional ultra-short wave buoy antenna may be affected by the environment when being opened by gravity counterweight is avoided.

[0019] (2) At the same time, due to the working requirements of the ultra-short wave antenna, the length of the ultra-short wave antenna is generally relatively long. In the air-droppable ultra-short wave buoy antenna in this embodiment, when the float assembly is in the storage state, the antenna steel strip of the antenna component is bent and then stored. During the unfolding process of the floating body, the antenna steel strip automatically returns to the extended state due to its own elasticity, so that the space occupation is greatly reduced in the storage state, and the damage risk caused by the exposure of the antenna is reduced.

[0020] (3) In the present utility model, the floating body and the hinge connecting member are fixedly connected by a reinforcing rod, which not only plays a connecting role for the floating body but also serves as a reinforcing rib, improving the overall strength of the floating body and enhancing the anti-wave and anti-wind performance of the air-droppable ultra-short wave buoy antenna in the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic diagram of the float assembly of the air-droppable ultra-short wave buoy antenna in the present utility model in the working state;

[0022] Figure 2 FIG. is a schematic diagram of the float assembly of the air-droppable ultra-short wave buoy antenna in the present utility model in the storage state;

[0023] Figure 3 FIG. is a top view of the float assembly of the air-droppable ultra-short wave buoy antenna in the present utility model in the working state;

[0024] Figure 4 FIG. is a schematic diagram of the antenna steel strip of the antenna assembly in the present utility model in the extended state;

[0025] Figure 5 FIG. is a schematic diagram of the antenna steel strip of the antenna assembly in the present utility model in the bent state;

[0026] Figure 6 FIG. is a schematic diagram of a floating body of the antenna assembly in the present utility model;

[0027] Figure 7 FIG. is a schematic diagram of a transmission shaft in the present utility model;

[0028] Figure 8 FIG. is a schematic diagram of a transmission arm and a hinge connecting member in the present utility model;

[0029] Figure 9 FIG. is a schematic diagram of the appearance of a transmission assembly in the present utility model;

[0030] Figure 10 FIG. is a further schematic diagram of a transmission arm and a hinge connecting member in the present utility model;

[0031] Figure 11 FIG. is a schematic diagram of a floating body with a reinforcing rod inserted therein in the present utility model.

[0032] Wherein: 1. Float assembly; 11. Floating body; 111. First end; 112. Second end; 113. Accommodating groove; 2. Transmission assembly; 21. Mounting seat; 22. Transmission shaft; 23. Transmission arm; 231. Third end; 232. Fourth end; 24. Hinge connecting member; 241. Fixed side; 242. Movable side; 3. Working assembly; 4. Antenna assembly; 41. Antenna base; 42. Lower radiator; 43. Antenna steel strip; 44. Network tube. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments of the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present utility model, it should be understood that orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. usually indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Without contrary explanations, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the protection scope of the present utility model: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0037] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0039] It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0040] See Figure 1 、 Figure 2 and Figure 3 , which show a schematic diagram of an air-droppable VHF buoy antenna described in the present application, including at least: a float assembly 1, a transmission assembly 2, a working assembly 3, and an antenna assembly 4; the float assembly 1 includes a storage state and a working state; the working assembly 3 is disposed on the lower side of the transmission assembly 2 and is connected to the transmission assembly 2; the float assembly 1 includes a plurality of floats 11, the floats 11 include a first end 111 and a second end 112 facing away from each other, and the first end 111 is connected to the transmission assembly 2; the antenna assembly 4 is fixedly disposed above the transmission assembly 2; when the float assembly 1 is in the storage state, the second ends 112 of the plurality of floats 11 are gathered together, and the plurality of floats 11 enclose to form an antenna cabin, and the antenna assembly 4 is accommodated in the antenna cabin, so as to facilitate air-dropping operations; when the float assembly 1 switches from the storage state to the working state, the working assembly 3 drives the transmission assembly 2 to move, so that the floats 11 are in an unfolded state, and the antenna assembly 4 is exposed, so that communication can be carried out through the antenna assembly 4.

[0041] In this embodiment, an air-droppable VHF buoy antenna is provided. In the stowed state, an antenna cabin is formed by gathering a plurality of floats 11, and the antenna assembly 4 is accommodated in the antenna cabin, facilitating dropping by means such as air dropping. When communication needs to be carried out through the air-droppable VHF buoy antenna of the present utility model, the floats 11 are moved and unfolded through the working assembly 3 and the transmission assembly 2, thereby enhancing the stability on the water surface through the plurality of unfolded floats 11. At the same time, since the working assembly 3 is used to drive the floats 11, the problem that the traditional VHF buoy antenna may be affected by the environment when opened by gravity counterweight is avoided. It has the advantages that it can still be successfully opened and the stability after opening can be ensured in complex environments, such as in the case of sea waves and strong winds.

[0042] Further, the number of floats 11 can be selected as three, and the cross-section of each float 11 is fan-shaped. When in the stowed state, the three floats 11 are in contact with each other, thus enclosing to form the antenna cabin. It should be noted that those skilled in the art can specifically select the number and shape of the floats according to actual production and use requirements. Only an optional solution is provided in this embodiment.

[0043] Further, a waterproof housing should be provided outside the working assembly 3, and the working assembly is accommodated through the waterproof housing. Specifically, the waterproof housing can be made of rigid foam material.

[0044] Further, during the use of the air-droppable VHF buoy antenna in the present utility model, the air-droppable VHF buoy antenna can be placed in a launch tube or other air-dropping equipment. At this time, the float assembly 1 is in the stowed state and is air-dropped through the launch tube or other air-dropping equipment. After the air-droppable VHF buoy antenna is air-dropped, after reaching certain conditions, the working assembly 3, through the transmission assembly 2, unfolds the floats 11, and the float assembly 1 switches to the working state. It stably floats on the water surface through the plurality of unfolded floats 11, and communication work is carried out through the antenna assembly 4.

[0045] Optionally, referring to Figure 4 and Figure 5 , the antenna assembly 4 in the present utility model includes an antenna base 41, a lower radiator 42, and an antenna steel belt 43; the antenna base 41 is fixedly arranged above the transmission assembly 2, and the lower end of the lower radiator 42 is fixedly arranged on the antenna base 41; the antenna steel belt 43 is fixedly connected to the upper end of the lower radiator 42; when the float assembly 1 is in the stowed state, the antenna steel belt 43 is in a bent state, and the antenna base 41, the lower radiator 42, and the antenna steel belt 43 in the bent state are accommodated in the antenna cabin; when the float assembly 1 is in the working state, the antenna steel belt 43 extends naturally.

[0046] In actual use, due to the working requirements of the ultra-short wave antenna, its antenna length is generally relatively long. When applied to the ultra-short wave buoy antenna, the problem of the long antenna length is often solved by increasing the size of the ultra-short wave buoy antenna or exposing part of the antenna.

[0047] For the air-droppable ultra-short wave buoy antenna in this embodiment, when the float assembly 1 is in the storage state, the antenna steel belt 43 of the antenna assembly 4 is bent and then stored. During the unfolding process of the floating body 11, the antenna steel belt 43 automatically returns to the extended state due to its own elasticity, thus greatly reducing the space occupation in the storage state and reducing the damage risk caused by the exposure of the antenna.

[0048] Furthermore, a Beidou antenna, a choke base, and a metal oscillator are also provided on the antenna base 41 for communication during the operation of the antenna.

[0049] Furthermore, the antenna steel belt 43 and the lower radiator 42 are connected by a network tube 44 for feeding transmission.

[0050] Optionally, referring to Figure 5 and Figure 6 , a receiving groove 113 is provided on any one of the plurality of floating bodies 11 in the present utility model. The receiving groove 113 is provided on the side of the floating body 11 close to the antenna cabin; the receiving groove 113 extends from the first end 111 to the second end 112; when the float assembly 1 is in the storage state, the bent antenna steel belt 43 is received in the receiving groove 113.

[0051] In this embodiment, the receiving groove 113 is provided on the side of the floating body 11 close to the antenna cabin. When the float assembly 1 is in the storage state, the bent antenna steel belt 43 is in the receiving groove 113, so that the antenna steel belt 43 is in a limited state to prevent it from shaking and colliding in the antenna cabin; at the same time, further, when the float assembly 1 switches to the working state and the floating body 11 unfolds, the receiving groove 113 can be used to guide the antenna steel belt 43 to avoid irregular shaking of the antenna steel belt 43 during the restoration process, resulting in unstable center of gravity.

[0052] Optionally, the floating body 11 in the present utility model is a rigid foam floating body.

[0053] In this embodiment, the floating body 11 made of rigid foam material has the advantages of high strength, high buoyancy and low self-weight, which is more convenient for transferring and air-dropping operations of the air-droppable ultra-short wave buoy antenna, and at the same time improves the anti-wave and anti-wind performance in complex environments.

[0054] It should be noted that those skilled in the art can specifically select the specific type of rigid foam according to the actual production and use requirements, and no specific limitation is made in this embodiment.

[0055] Optionally, referring to Figure 7 , Figure 8 and Figure 9 , the transmission assembly 2 in the present utility model includes a mounting seat 21, a transmission shaft 22, a plurality of transmission arms 23 and a plurality of hinge connectors 24; wherein, the mounting seat 21 is arranged above the working assembly 3; the transmission shaft 22 is arranged at the central position of the mounting seat 21; the transmission arm 23 includes a third end 231 and a fourth end 232 which are opposite to each other, the third end 231 is hinged to the transmission shaft 22, and the fourth end 232 is movably connected to a hinge connector 24; a hinge connector 24 is fixedly connected to a floating body 11; the antenna assembly 4 is fixedly arranged above the transmission shaft 22; the working assembly 3 includes a power supply unit and a driving motor, and the power supply unit is electrically connected to the driving motor; the output end of the driving motor is connected to the transmission shaft 22.

[0056] In this embodiment, a power supply unit and a driving motor are arranged in the working assembly, and the driving motor is powered by the power supply unit; the output end of the driving motor drives the transmission shaft 22 to move, so that the transmission arm 23 hinged to the transmission shaft 22 moves, and then the floating body 11 is unfolded through the hinge connector 24, and the float assembly 1 enters the working state.

[0057] Specifically, when the float assembly 1 is in the process of switching from the storage state to the working state, the driving motor makes the transmission shaft 22 move towards the mounting seat 21, drives the third end 231 of the transmission arm 23 to move, realizes the movement of the transmission arm 23, makes the hinge connector 24 hinged to the fourth end 232 and the floating body 11 fixedly connected to the hinge connector 24 move, unfolds the floating body 11, and the float assembly 1 enters the working state.

[0058] Furthermore, the mounting seat 21, the transmission shaft 22 and the transmission arm 23 in this embodiment can all be made of titanium alloy, which further reduces the weight while ensuring the structural strength.

[0059] Furthermore, the driving motor in this embodiment can be provided with a self-locking structure. When the float assembly 1 is in the storage state, the self-locking is used to prevent the floating body 11 from being uncontrollably unfolded due to factors such as vibration; and after the float assembly 1 enters the working state, the floating body 11 is fixed by the self-locking.

[0060] Optionally, referring to Figure 10, in the hinge connector 24 of the present utility model, it includes a fixed side 241 and a movable side 242 which are hingedly connected. The fixed side 241 is fixedly arranged on the mounting seat 21, and the movable side 242 is hingedly connected to the fourth end 232 and fixedly connected to the first end 111 of a floating body 11; when the float assembly 1 is in the storage state, the movable side 242 is perpendicular to the fixed side 241, so that the second ends 112 of the floating body 11 are brought closer together; when the float assembly 1 is switched from the storage state to the working state, the driving motor drives the third end 231 to move towards the mounting seat 21 through the transmission shaft 22, driving the movable side 242 to move to be in the same plane as the fixed side 241, so that the floating body 11 is in the unfolded state.

[0061] In this embodiment, the fixed side 241 of the hinge connector 24 is fixedly arranged on the mounting seat 21, and the movable side 242 is hingedly connected to the fixed side 241 through a connecting shaft; the movable side 242 is hingedly connected to the fourth end 232 of the movable arm 23, and further, the movable side 242 is fixedly connected to the first end 111 of the floating body 11. In practical applications, when the float assembly 1 is in the storage state, at this time the second ends 112 of the floating body 11 are brought closer together, and the movable side 242 and the fixed side 241 are in a vertical state; when the float assembly 1 is in the process of being switched from the storage state to the working state, the driving motor makes the transmission shaft 22 move towards the mounting seat 21, driving the third end 231 of the transmission arm 23 to move towards the mounting seat 21, and the fourth end 232 drives the movable side 242 to rotate around the connecting shaft until it is in the same plane as the fixed side 241. At this time, the floating body 11 is unfolded, and the float assembly 1 completes the switching from the storage state to the working state.

[0062] Furthermore, the fixed side 241 can be fixedly connected to the mounting seat 21 through fixing parts such as screws and bolts.

[0063] Optionally, referring to Figure 11 , a through groove is provided on the floating body 11 of the present utility model, and the through groove extends from the first end 111 to the second end 112; a reinforcing bar 243 is fixedly arranged on the movable side 242, and the reinforcing bar 243 is inserted into the through groove to fix the floating body 11.

[0064] In this embodiment, a reinforcing bar 243 is fixedly arranged on the movable side 242 of the hinge connector 24. By inserting the reinforcing bar 243 into the through groove on the floating body 11, it plays a role in fixing the floating body 11, and at the same time serves as a reinforcing rib to enhance the structural strength of the floating body 11 and improve the overall structural strength of the float assembly 1.

[0065] Furthermore, the reinforcing bar 243 can be selected as a fiberglass rod, which is adhesively connected to the floating body 11, enhancing the structural strength while avoiding excessive weight.

[0066] Optionally, among the multiple floating bodies 11 in the present utility model, an end cap is provided on the second end 112 of any one of the floating bodies 11. When the float assembly 1 is in the storage state, the end cap abuts against the second ends 112 of other floating bodies 11 to seal the antenna cabin.

[0067] In this embodiment, an end cap can be provided on the second end 112 of any one of the multiple floating bodies 11. When the float assembly 1 is in the storage state, the end cap abuts against the second ends 112 of other floating bodies 11, thereby sealing the antenna cabin to prevent water flow from entering the antenna cabin during the water entry process and having an adverse effect on the antenna assembly.

[0068] Optionally, a magnetic attraction device is provided at the second end 112 of the present utility model for making the floating bodies 11 gather together when the float assembly 1 is in the storage state.

[0069] In this embodiment, a magnetic attraction device can be provided at the second end 112 of the floating body 11. In the storage state of the float assembly 1, the floating bodies 11 are made to gather together through the magnetic attraction device to prevent the floating bodies 11 from unfolding uncontrollably due to factors such as vibration during transportation or airdrop delivery, which brings unstable factors to the use of the air-droppable ultra-short wave buoy antenna.

[0070] Optionally, the working component 3 in the present utility model further includes a radio frequency part; the radio frequency part is electrically connected to the antenna assembly 4.

[0071] In this embodiment, the working component 3 further includes a radio frequency part. After the float assembly 1 switches to the working state and the antenna assembly 4 is exposed, the radio frequency part communicates through the antenna assembly 4.

[0072] Furthermore, the working component 3 may also include a water entry sensor, a timer, and a signal receiver. In application, the state switching method of the air-droppable ultra-short wave buoy antenna can be specifically selected through the water entry sensor, the timer, and the signal receiver. Specifically, it can be selected to switch the state of the float assembly 1 after water entry, switch the state of the float assembly 1 at a fixed time after launching, or actively control the float assembly 1 to switch states through the signal receiver. Thus, the application methods of the air-droppable ultra-short wave buoy antenna in the present utility model are enriched to meet various application requirements.

[0073] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0074] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air-droppable VHF buoy antenna, characterized in that, The air-droppable VHF buoy antenna includes: a float assembly (1), a transmission assembly (2), a working assembly (3), and an antenna assembly (4); The float assembly (1) includes a storage state and a working state; The working assembly (3) is disposed on the lower side of the transmission assembly (2) and is connected to the transmission assembly (2); The float assembly (1) includes a plurality of floats (11), and each float (11) includes a first end (111) and a second end (112) facing away from each other. The first end (111) is connected to the transmission assembly (2); The antenna assembly (4) is fixedly disposed above the transmission assembly (2); When the float assembly (1) is in the storage state, the second ends (112) of the plurality of floats (11) are gathered together, and the plurality of floats (11) enclose to form an antenna cabin, and the antenna assembly (4) is accommodated in the antenna cabin; When the float assembly (1) is switched from the storage state to the working state, the working assembly (3) drives the transmission assembly (2) to move, so that the floats (11) are in an unfolded state, and the antenna assembly (4) is exposed.

2. The air-droppable VHF buoy antenna according to claim 1, characterized in that The antenna assembly (4) includes an antenna base (41), a lower radiator (42), and an antenna steel belt (43); the antenna base (41) is fixedly disposed above the transmission assembly (2), and the lower end of the lower radiator (42) is fixedly disposed on the antenna base (41); the antenna steel belt (43) is fixedly connected to the upper end of the lower radiator (42); When the float assembly (1) is in the storage state, the antenna steel belt (43) is in a bent state, and the antenna base (41), the lower radiator (42), and the antenna steel belt (43) in the bent state are accommodated in the antenna cabin; When the float assembly (1) is in the working state, the antenna steel belt (43) extends naturally.

3. The air-droppable VHF buoy antenna according to claim 2, wherein, A receiving groove (113) is provided on any one of the plurality of floats (11), and the receiving groove (113) is provided on a side of the float (11) close to the antenna cabin; the receiving groove (113) extends from the first end (111) to the second end (112); When the float assembly (1) is in the storage state, the antenna steel belt (43) in the bent state is accommodated in the receiving groove (113).

4. The air-droppable VHF buoy antenna according to claim 1, characterized in that, The float (11) is a rigid foam float (11).

5. The air-droppable VHF buoy antenna according to claim 1, characterized in that, The transmission assembly (2) includes a mounting base (21), a transmission shaft (22), a plurality of transmission arms (23), and a plurality of hinge connectors (24); Among them, the mounting base (21) is arranged above the working component (3); the transmission shaft (22) is arranged at the central position of the mounting base (21); the transmission arm (23) includes a third end (231) and a fourth end (232) that face away from each other. The third end (231) is hinged to the transmission shaft (22), and the fourth end (232) is movably connected to one of the hinge connectors (24); one of the hinge connectors (24) is fixedly connected to one of the floating bodies (11); the antenna assembly (4) is fixedly arranged above the transmission shaft (22). The working component (3) includes a power supply unit and a driving motor, and the power supply unit is electrically connected to the driving motor; the output end of the driving motor is connected to the transmission shaft (22).

6. The air-droppable VHF buoy antenna according to claim 5, characterized in that, The hinge connector (24) includes a fixed side (241) and a movable side (242) that are hinged. The fixed side (241) is fixedly arranged on the mounting base (21), and the movable side (242) is hinged to the fourth end (232) and fixedly connected to the first end (111) of one of the floating bodies (11). When the float assembly (1) is in the storage state, the movable side (242) is perpendicular to the fixed side (241), causing the second ends (112) of the floating bodies (11) to come closer together. When the float assembly (1) switches from the storage state to the working state, the driving motor drives the third end (231) to move towards the mounting base (21) through the transmission shaft (22), driving the movable side (242) to move to the same plane as the fixed side (241), and causing the floating body (11) to be in the unfolded state.

7. The air-droppable VHF buoy antenna according to claim 6, wherein A through groove is provided on the floating body (11), and the through groove extends from the first end (111) to the second end (112). A reinforcing bar is fixedly arranged on the movable side (242), and the reinforcing bar is inserted into the through groove to fix the floating body (11).

8. The airdroppable VHF buoy antenna according to claim 1, wherein, Among multiple floating bodies (11), an end cover is arranged on the second end (112) of any one of the floating bodies (11). When the float assembly (1) is in the storage state, the end cover abuts against the second ends (112) of other floating bodies (11) to seal the antenna cabin.

9. The air-droppable VHF buoy antenna according to claim 1, wherein The second end (112) is provided with a magnetic attraction device for causing the floating bodies (11) to come closer together when the float assembly (1) is in the storage state.

10. The air-droppable VHF buoy antenna according to any one of claims 1 to 9, characterized in that, The working component (3) further includes a radio frequency unit. The radio frequency unit is electrically connected to the antenna assembly (4).

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