A device for mobile communication terminals to exchange information underwater via electromagnetic waves.

Abstract

This invention provides a device for underwater information exchange between a mobile communication terminal and the mobile smart terminal via electromagnetic waves. The device includes an electromagnetic wave transceiver unit, a cable reel, and a fixing bracket. The electromagnetic wave transceiver unit enables wireless information exchange between the device and the mobile smart terminal via its included antenna. The cable reel is used to reel in and unreel the cable, fixing the antenna and allowing it to rotate synchronously with the reel. The fixing bracket maintains a fixed relative position between the mobile smart terminal and the device. This invention utilizes a cable and an underwater mobile smart terminal for wireless information exchange via electromagnetic waves, and further employs an underwater cable reel structure, thus significantly addressing the problems of insufficient safety and maneuverability.

Description

Technical Field

[0001] The present invention relates to the field of machinery, specifically to the field of underwater wireless communication equipment, and in particular to a device for a mobile communication terminal to perform information exchange underwater through electromagnetic waves. Prior Art

[0002] At present, mobile communication has become an indispensable and most commonly used way for people to communicate with the outside world, and its terminal devices have been popularized by almost everyone, among which the most widely used are mobile smart phones. How to effectively, safely and conveniently transmit the electromagnetic wave signals brought by underwater mobile smart terminals to the surface and directly reach the Internet and other general communication systems has become a new problem.

[0003] The existing technical solution is mainly to directly connect one end of the communication cable to the physical interface of the underwater mobile intelligent terminal. The underwater mobile intelligent terminal transmits the electrical signal to the surface through the communication cable, and then the operator on the water processes and connects to the Internet. The biggest problem and disadvantage of this technology is that the cable must be retracted and released by the operator on the water. When the underwater environment is more complicated, in order to avoid and handle the entanglement and pulling of the cable and underwater objects, one or more people are required to maintain the cable underwater. Even so, the person carrying the underwater mobile intelligent terminal is still in a relatively unsafe state, and its mobility is limited by the surface personnel. The safety and mobility of personnel and equipment during the entire operation are low, and the operating cost is high (multiple people are required to cooperate). Therefore, it is not widely used and can hardly be used for general personal consumption. Summary of the invention

[0004] In view of the background technology, it is necessary for the present invention to provide a device that can effectively, safely and conveniently transmit the electromagnetic wave signal of a mobile smart terminal brought underwater to the water surface and directly reach the Internet and other general communication systems.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for a mobile communication terminal to exchange information underwater through electromagnetic waves, comprising an electromagnetic wave transceiver unit, a cable reel and a fixing bracket; the electromagnetic wave transceiver unit comprises an antenna, the antenna is used to realize wireless information exchange between the electromagnetic wave transceiver unit and a mobile intelligent terminal; the cable reel is used to realize the retraction and release of the cable, the cable reel is used to fix the antenna, and the antenna and the cable reel are rotated synchronously; the fixing bracket is used to fix the mobile intelligent terminal.

[0007] Furthermore, the electromagnetic wave transceiver unit also includes a cable, an antenna base, a waterproof protective cover and a filling port sealing cover, the antenna base is used to install the antenna, the positive and negative poles of the cable are electrically connected to the positive and negative poles of the antenna respectively, the waterproof protective cover is arranged on the side of the antenna base where the antenna is arranged, the waterproof protective cover covers the antenna, and the side wall of the waterproof protective cover and the antenna base are matched with zero clearance, the antenna is located in the enclosed space formed by the antenna base and the waterproof protective cover, the waterproof protection filler is injected into the enclosed space from the filling port of the waterproof protective cover, and the filling port sealing cover is used to seal the filling port.

[0008] Preferably, the PCB onboard antenna is arranged on a PCB board, and the PCB board is fitted with the inner surface of the waterproof protective cover.

[0009] Furthermore, the cable is located on the other side of the antenna base where the PCB onboard antenna is provided, one end of the cable passes through the antenna base and is electrically connected to the PCB onboard antenna, and the connection between the cable and the antenna base is in a sealed state.

[0010] Preferably, a surface of the antenna base facing the antenna is provided with a plurality of protrusions and grooves.

[0011] Furthermore, the cable retractable reel comprises a reel, the antenna base is provided with the other side of the antenna fixed to the end of the reel shaft of the reel, the cable is wound on the reel, and the forward and reverse rotation of the reel realizes the retraction and release of the cable.

[0012] Furthermore, the cable retractable reel also includes a reel fixing plate, a rotating transmission plate and a rotating handle. The reel fixing plate is gap-fitted with the outside of the reel, and the rotating transmission plate is arranged on the outside of the reel fixing plate. A first protrusion is provided at the center of the reel, and the first protrusion passes through the reel fixing plate and is fixedly fitted with the rotating transmission plate. The rotating handle is fixedly fitted with the rotating transmission plate. When the reel fixing plate is fixed, the rotating handle is rotated to drive the antenna base and the reel to rotate forward and reverse relative to the reel fixing plate through the transmission of the rotating transmission plate.

[0013] Preferably, a circular groove is provided in the center of the reel, the circular groove is located in the reel, a circular protrusion is provided in the center of the reel fixing plate, the reel and the reel fixing plate are clearance-matched through the circular groove and the circular protrusion; the first protrusion is located in the center of the circular groove, a through hole is provided in the center of the circular protrusion, and the first protrusion is fixedly matched with the rotating transmission plate after passing through the through hole.

[0014] Preferably, the inner surface of the reel fixing plate is provided with a plurality of second protrusions, the second protrusions cooperate with the surface clearance of the reel, and the reel fixing plate is provided with a plurality of first through holes along the circumferential direction; the rotating transmission plate is provided with a plurality of third protrusions, the third protrusions cooperate with the surface clearance of the reel fixing plate, and the rotating transmission plate is provided with a plurality of second through holes along the circumferential direction.

[0015] Preferably, the cable retractable reel further comprises a cable guide, the cable guide is connected to the reel fixing plate by a fixed connection or the cable guide and the reel fixing plate are integral, the cable guide is a hollow frame, the cable guide comprises two opposing connecting rods, the surfaces of the connecting rods are coated with a damping rubber layer, the spacing between the outer surfaces of the damping rubber layers of the two connecting rods is smaller than the outer diameter of the cable, and one end of the cable passes through the cable guide.

[0016] Furthermore, the fixing bracket includes a left / right handle, an upper connecting rod, a lower connecting rod and a left / right connecting arm, the two ends of the upper connecting rod are used to fix the left and right sides of the upper part of the waterproof mobile smart terminal or the waterproof protective shell of the mobile smart terminal, the lower connecting rod is used to limit the lower end of the waterproof mobile smart terminal or the waterproof protective shell of the mobile smart terminal, the two ends of the upper connecting rod and the lower connecting rod are respectively fixedly connected to the left / right handle, one end of the left / right connecting arm is fixedly connected to the reel fixing plate, and the other end of the left / right connecting arm is respectively fixedly connected to one end of the left / right handle.

[0017] Preferably, the fixed bracket also includes an upper pressure plate and a lower pressure plate, the upper pressure plate is fixed to the outer surface of the upper connecting rod, and the lower pressure plate is fixed to the outer surface of the lower connecting rod.

[0018] Preferably, the cable retractable reel further comprises a rotary control trigger, one end of the rotary control trigger being connected to the upper connecting rod via a rotating shaft, a protrusion being provided at the end of the rotary control trigger away from the rotating shaft, a pressing end being provided at a position of the rotary control trigger close to the rotating shaft, a spring being provided between the rotary control trigger and the upper connecting rod, the spring being located between the pressing end and the protrusion, a plurality of inclined protrusions being provided on the periphery of the surface of the antenna base, the inclined protrusions forming an inverted fit with the protrusion of the rotary control trigger, and the cable can only be recovered when the rotary control trigger is not depressed; the cable can be retracted and released after the rotary control trigger is depressed.

[0019] Furthermore, one end of the left / right connecting arm is fixedly connected to the reel fixing plate, and the other end is fixedly connected to one end of the left / right grip, respectively, so that the surface of the waterproof protective cover and the corresponding surface of the waterproof mobile intelligent terminal or its waterproof protective shell form a close distance and gap relationship, thereby avoiding friction between the waterproof mobile intelligent terminal or its waterproof protective shell when the reel rotates, and at the same time, the protrusion of the rotation control trigger is matched with the surface of the antenna base without gap through the spring.

[0020] Furthermore, a plurality of metal nuts are provided on the left / right handles, and the metal nuts are embedded in the left / right handles. The metal nuts are used to provide a connection and fixation interface for other accessory devices.

[0021] Preferably, the edge of the antenna base is configured as a toothed structure, and the user can hold the bracket handle with one hand underwater and move the toothed edge of the antenna base with his fingers, thereby retrieving the cable without rotating the rotating handle.

[0022] Preferably, the bottom of the left / right handle has two fulcrums respectively, and the four fulcrums of the left / right handle are located in the same horizontal plane, and the four fulcrums are used for support.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The present invention uses a cable and an underwater mobile intelligent terminal to exchange information in an electromagnetic wave wireless connection mode, and on this basis adopts an underwater cable retracting structure, thus largely solving the problem of serious lack of safety and mobility. Combined with an unmanned device on the surface, it can be operated by one person, and the entire device adopts an easy-to-store portable design, making the product more suitable for ordinary consumers.

[0025] The present invention is combined with unmanned devices on water, which enables individual consumers to carry their own mobile smart terminals to achieve underwater connection with the Internet, and can conduct instant interactive interaction with good safety and mobility. The scope of application and scenarios (market boundaries) are greatly expanded, and it has broad market prospects and good social benefits. Simple diagram description

[0026] Figure 1 is a schematic diagram of a three-dimensional structure of a mobile communication terminal connected to a mobile terminal in an underwater device for information interaction via electromagnetic waves according to an embodiment of the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the electromagnetic wave transceiver unit of the embodiment of the present invention, in which the antenna base and the waterproof protective cover are in a cutaway state;

[0028] FIG3 is a schematic diagram showing the structural relationship between the cable, the PCB-mounted antenna and the antenna base. In the figure, the antenna base on the right side is cut open and removed;

[0029] Figure 4 is a schematic diagram of the structural relationship between the antenna base and the PCB board antenna;

[0030] FIG5 is a schematic diagram showing the structural relationship between the antenna base, the PCB onboard antenna and the waterproof protective cover, in which the waterproof protective cover on the left side is shown in perspective;

[0031] Figure 6 is a schematic cross-sectional structure diagram of an electromagnetic transceiver unit and a cable retractable reel combined with an embodiment of the present invention;

[0032] Figure 7 is a schematic diagram of the structural relationship between the reel, the reel fixing plate and the rotating transmission plate;

[0033] Figure 8 is a schematic diagram of the three-dimensional structure of the back perspective of the device according to an embodiment of the present invention;

[0034] Figure 9 is a schematic diagram of the three-dimensional structure of the fixed bracket;

[0035] Figure 10 is a schematic diagram of a three-dimensional structure of the device and the mobile communication terminal after the embodiment of the present invention is combined;

[0036] FIG. 11 is an exploded schematic diagram of the device according to the embodiment of the present invention. Implementation

[0037] The present invention is further described in detail below in conjunction with specific implementation modes.

[0038] This embodiment provides a device for a mobile communication terminal to exchange information underwater through electromagnetic waves, as shown in FIG1 , which is composed of an electromagnetic wave transceiver unit 1 , a cable reel 2 and a fixing bracket 3 .

[0039] The function of the electromagnetic wave transceiver unit 1 is to realize bidirectional conversion between electromagnetic waves and alternating voltage through the PCB onboard antenna contained therein, thereby realizing information interaction between the device described in this embodiment and the mobile intelligent terminal 4 in a wireless manner, which is also the basic condition for the underwater operator to retract and release the cable.

[0040] The functions of the cable reel 2 are: to realize the retraction and release of the cable; to fix the PCB board-mounted antenna and make it rotate synchronously with the cable reel.

[0041] The function of the fixed bracket 3 is to keep the relative position of the mobile intelligent terminal 4 and the device fixed; it also serves as a handle for the operator to hold the device; and it also serves as a fixed bracket for externally connecting other accessories (such as a diving light, a camera lens, a buoyancy arm, etc.).

[0042] The details are as follows:

[0043] As shown in FIG. 2 , the electromagnetic wave transceiver unit 1 includes a PCB board antenna 11 (antenna 11), a cable 12, an antenna base 13, a waterproof protective cover 14 and a filling port sealing cover 16. The antenna base 13 is used to install the PCB board antenna 11, the positive and negative electrodes of one end of the cable 12 are electrically connected to the positive and negative electrodes of the PCB board antenna 11 respectively, the waterproof protective cover 14 is arranged on the side of the antenna base 13 where the PCB board antenna 11 is arranged, the waterproof protective cover 14 covers the PCB board antenna 11, and the side wall edge of the waterproof protective cover 14 and the surface of the antenna base 13 are zero-gap matched to achieve waterproof sealing, so that the antenna base 13 and the waterproof protective cover 14 form a closed space, and the PCB board antenna 11 is located in the closed space. The waterproof protective filler 15 is injected into the closed space from the filling port of the waterproof protective cover 14, and the filling port sealing cover 16 is used to seal the filling port.

[0044] As shown in FIG3 , the antenna base 13 is provided with a circular hole for the cable 12 to pass through, the inner diameter of the circular hole is slightly smaller than the outer diameter of the insulating protective layer of the cable 12, and the insulating protective layer of the cable 12 has a certain flexibility, so that after the cable 12 passes through the circular hole, the circular hole is in a sealed state. The surface of the PCB board 11a where the PCB board-mounted antenna 11 is located fits with the inner surface of the waterproof protective cover 14, and the outer edge of the waterproof protective cover 14 is embedded in the surface of the antenna base 13, and the connection between the two is zero-clearance fit.

[0045] As shown in FIG. 4 , the surface of the antenna base 13 facing the PCB board antenna 11 is provided with a plurality of protrusions 131 to ensure a certain gap between the PCB board antenna 11 and the antenna base 13 . Meanwhile, the surface of the antenna base 13 facing the PCB board antenna 11 is also provided with one or more grooves 132 . The gaps 131 and grooves 132 can ensure smooth filling of the waterproof protective filling body 15 .

[0046] As shown in FIG5 , the waterproof protective filler 15 is injected into the enclosed space from the filling port 14a of the waterproof protective cover 14. After the filling is completed, the filling port sealing cover 16 is used to seal the filling port 14a, so that the antenna base 13 and the waterproof protective cover 14 are closely matched to form a completely sealed state. The waterproof protective filler 15 is an insulating sealing material. After a certain period of time, the waterproof protective filler 15 is irreversibly and permanently solidified by the fluid. The toothed structure can realize the antenna base 13 being moved by one hand to drive the cable retracting reel 2 to rotate to recycle or release the cable.

[0047] As shown in FIGS. 6 and 7 , the cable retractable reel 2 is composed of a reel 21, a reel fixing plate 22, a rotating transmission plate 23, a rotating handle 24, a rotating control trigger 27 and a spring 28. The antenna base 13 and the end of the reel 21 of the reel 21 are fixed together by screws to form an antenna reel assembly. The cable 12 is located between the antenna base 13 and the reel 21. Specifically, the cable 12 is wound on the reel 21. The reel 21 can be rotated forward and backward to realize the retraction and release of the cable 12.

[0048] A circular groove 212 is provided on the side of the reel 21 facing the reel fixing plate 22, and the circular groove 212 is located in the center of the reel 21. The circular groove 212 is opened in the reel 211 and is coaxial with the reel 211. A circular protrusion 221 matching the circular groove 212 is provided in the center of the reel fixing plate 22, and the reel 21 and the reel fixing plate 22 are clearance-matched through the circular groove 212 and the circular protrusion 221.

[0049] The rotating transmission plate 23 is arranged on the outer side of the reel fixing plate 22. A first protrusion 213 is arranged at the center of the circular groove 212 of the reel 21, and a through hole 222 is arranged at the center of the circular protrusion 221 of the reel fixing plate 22. The first protrusion 213 passes through the through hole 222, so that the reel 21 is fixedly matched with the rotating transmission plate 23, and the rotating handle 24 is fixedly matched with the rotating transmission plate 23. When the reel fixing plate 22 is fixed, the rotating handle 24 is rotated, and under the transmission of the rotating transmission plate 23, the antenna disk assembly can be rotated in the forward and reverse directions relative to the reel fixing plate 22.

[0050] The surface of the reel fixing plate 22 facing the reel 21 is provided with a plurality of second protrusions 223, the second protrusions 223 are in clearance with the surface of the reel 21, and the reel fixing plate 22 is provided with a plurality of first through holes 225 along the circumferential direction; the surface of the rotating transmission plate 23 facing the reel fixing plate 22 is provided with a plurality of third protrusions 231, the third protrusions 231 are in clearance with the surface of the reel fixing plate 22, and the rotating transmission plate 23 is provided with a plurality of second through holes 232 along the circumferential direction. The above features are for reducing the rotation friction of the device, and also for dealing with the influence of mud, sand and other floating objects in the underwater environment on the rotation operation, and for flushing the device with clean water after use, so as to extend the life of the device.

[0051] As shown in FIG8 , the reel fixing plate 22 is provided with a cable guide 25, and the cable guide 25 is connected to the reel fixing plate 22 in a fixed connection or in an integrated manner. The opening of the cable guide 25 is in a rectangular shape, and the long side of the cable guide 25 faces the reel space formed by the antenna base 13 and the reel 21, ensuring that the cable is arranged relatively neatly when the cable is recovered; the damping rubber layer 26 is wrapped on the connecting rods 251 on opposite sides of the cable guide 25, and the distance between the two damping rubber layers 26 is slightly smaller than the outer diameter of the cable 12, so as to achieve a suitable retraction / release damping effect.

[0052] As shown in FIG9 , the fixed bracket is composed of a left / right grip 31, an upper connecting rod 32, an upper pressure plate 33, a lower connecting rod 34, a lower pressure plate 35 and a left / right connecting arm 36. The two ends of the upper connecting rod 32 and the lower connecting rod 34 are fixedly combined with the left / right grip 31 to form a stable whole, and the four supporting points 311 at the lower end of the left / right grip 31 are in the same plane, so that the device can be placed stably. The two ends of the upper connecting rod 32 are used to fix the left and right sides of the upper part of the mobile intelligent terminal 4 or the waterproof protective shell 4a of the mobile intelligent terminal 4, and the lower connecting rod 33 is used to limit the lower end of the mobile intelligent terminal 4 or the waterproof protective shell 4a of the mobile intelligent terminal 4. The left and right ends of the upper connecting rod 32 and the lower connecting rod 33 are respectively fixedly combined with the left / right grip 11. The upper pressing plate 33 is fixed to the outer surface of the upper connecting rod 32 by screws, and the lower pressing plate 35 is fixed to the outer surface of the lower connecting rod 34 by screws, so that the mobile smart terminal 4 or the waterproof protective shell 4a of the mobile smart terminal 4 is completely fixed to the fixing bracket in three dimensions.

[0053] As shown in Figures 8, 10 and 11, one end of the rotation control trigger 27 is connected to the upper connecting rod 32 through a rotating shaft 29, a protrusion 272 is provided at the end of the rotation control trigger 27 away from the rotating shaft, a pressing portion 271 is provided at the position of the rotation control trigger 27 close to the rotating shaft, a spring 28 is provided between the rotation control trigger 27 and the upper connecting rod 32, and the spring 28 is located between the pressing portion 271 and the protrusion 272, a plurality of inclined protrusions 13a are provided on the surface periphery of the antenna base 13, and the inclined protrusions 13a and the protrusions 272 form an inverted fit, when the rotation control trigger 27 is not pressed, it can only rotate in the direction of retracting the cable 12, and the cable 12 cannot be released, and after the rotation control trigger 27 is pressed, the cable 12 can be retracted and released. The purpose of this design is to control the release of the cable 12 as needed to avoid the entanglement of the cable 12 caused by excessive release, which may bring safety hazards to the device and the underwater operator. At the same time, this design conforms to the habit of people holding the left / right handle 3 with both hands and pressing the trigger with the index finger, and can realize the single-handed control of releasing the cable 12. As can be seen in FIG11, various adjacent components are fixedly connected by screws 5.

[0054] As shown in FIG. 10 , the surface shapes and sizes of the upper connecting rod 32 and the lower connecting rod 34 respectively match the surface shapes of the mobile smart terminal 4 or the waterproof protective shell 4a of the mobile smart terminal 4, so that the combination of the two can achieve relative fixation in the horizontal and vertical directions.

[0055] One end of the left / right connecting arm 36 is fixedly connected to the corresponding position on the reel fixing plate 26, and the other end of the left / right connecting arm 36 is fixedly connected to one end of the left / right grip 31, so that the surface of the waterproof protective cover 14 of the electromagnetic wave transceiver unit and the corresponding surface of the mobile intelligent terminal 4 or the waterproof protective shell 4a of the mobile intelligent terminal 4 form a close distance and gap relationship to ensure that the electromagnetic wave signal is attenuated to a minimum; at the same time, the protrusion at one end of the rotating control trigger 27 is matched with the surface of the antenna base 1 without gap, ensuring that the rotating control trigger 27 effectively controls the release of the cable.

[0056] As shown in FIG. 9 , the left / right handle 31 is provided with a plurality of embedded metal nuts 37a as an accessory expansion interface 37, and its function is to provide a connection and fixing interface for accessory devices (such as diving lights, camera lenses, buoyancy arms, etc.).

[0057] 1: Electromagnetic wave transceiver unit 2: Cable reel 3:Fix the bracket 4: Mobile smart terminal 11: Antenna 11a: PCB board 12: Cable 13: Antenna base 14: Waterproof protective cover 15: Waterproof protective filling body 16: Filling port sealing cover 131: Gap 132: Groove 13a: Bevel protrusion 14a: filling port 21: Reel 22: Reel fixing plate 23: Rotating transmission plate 24: Rotate the handle 25: Cable guide 26: Damping rubber layer 27: Rotate the trigger 28: Spring 29: Rotation axis 211: Scroll 212: Circular groove 213: first protrusion 221: round protrusion 222:Through hole 223: Second protrusion 225: First piercing 231: Third protrusion 232: Second piercing 251: Connecting rod 271: Pressing part 272: Raised part 31: Left / right handle 32: Upper connecting rod 33: Upper pressure plate 34: Lower connecting rod 35: Lower pressure plate 36: Left / right connecting arm 37: Accessory Extension Interface 311: Fulcrum 37a:Metal nut 4a: Waterproof protective case

Claims

1. A device for underwater information interaction via electromagnetic waves by a mobile communication terminal, comprising an electromagnetic wave transceiver unit, a cable reel, and a fixing bracket; the electromagnetic wave transceiver unit includes an antenna for wireless information interaction between the electromagnetic wave transceiver unit and a mobile intelligent terminal; the cable reel is used for retracting and releasing the cable, and is used to fix the antenna and rotate synchronously with the cable reel; the fixing bracket is used to fix the mobile intelligent terminal; the electromagnetic wave transceiver unit further includes a cable, an antenna base, and a waterproof protective cover; the antenna base is used to mount the antenna, the positive and negative terminals of the cable are electrically connected to the positive and negative terminals of the antenna, the waterproof protective cover is disposed on the side of the antenna base where the antenna is mounted, the waterproof protective cover covers the antenna, and the sidewall of the waterproof protective cover and the antenna base have a zero-gap fit; the antenna is located within the sealed space formed by the antenna base and the waterproof protective cover; the antenna is a PCB-mounted antenna.

2. The apparatus as claimed in claim 1, wherein, The electromagnetic transceiver unit also includes a filling port sealing cap, through which waterproof protective filler is injected into the sealed space, and the filling port sealing cap is used to seal the filling port.

3. The apparatus as described in claim 1 or 2, wherein, The PCB-on-board antenna is mounted on the PCB board, and the PCB board is attached to the inner surface of the waterproof protective cover.

4. The apparatus as claimed in claim 3, wherein the cable is located on the other side of the antenna base on which the PCB-on-board antenna is mounted, one end of the cable passes through the antenna base and is electrically connected to the PCB-on-board antenna, and the connection between the cable and the antenna base is sealed.

5. The apparatus as claimed in claim 1, wherein, The cable reel includes a reel, and the antenna base has the other side of the antenna fixed to the spool end of the reel. The cable is wound on the spool, and the forward and reverse rotation of the reel realizes the retraction and release of the cable.

6. The apparatus as claimed in claim 5, wherein, The cable reel also includes a reel fixing plate, a rotary transmission plate, and a rotary handle. The reel fixing plate is spaced to the outside of the reel, and the rotary transmission plate is located outside the reel fixing plate. The reel has a first protrusion at its center, which passes through the reel fixing plate and is fixedly engaged with the rotary transmission plate. The rotary handle is fixedly engaged with the rotary transmission plate. When the reel fixing plate is stationary, rotating the rotary handle causes the antenna base and the reel to rotate forward and in the opposite direction relative to the reel fixing plate through the transmission of the rotary transmission plate.

7. The apparatus as claimed in claim 6, wherein, The reel has a circular groove in the center, which is located inside the reel shaft. The reel fixing plate has a circular protrusion in the center. The reel and the reel fixing plate are fitted with the circular groove and the circular protrusion with a clearance. The first protrusion is located in the center of the circular groove, and the circular protrusion has a through hole in the center. The first protrusion passes through the through hole and is fixedly fitted with the rotary transmission plate.

8. The apparatus as claimed in claim 7, wherein, The inner surface of the reel fixing plate is provided with a plurality of second protrusions, the second protrusions being clearance-fitted with the surface of the reel, and the reel fixing plate is provided with a plurality of first through holes along the circumferential direction; the rotary transmission plate is provided with a plurality of third protrusions, the third protrusions being clearance-fitted with the surface of the reel fixing plate, and the rotary transmission plate is provided with a plurality of second through holes along the circumferential direction.

9. The apparatus as described in any one of claims 5 to 8, wherein, The cable reel also includes a cable guide. The cable guide is fixedly connected to the reel fixing plate or the cable guide and the reel fixing plate are integrated. The cable guide is a hollow frame shape and includes two opposing connecting rods. The surface of the connecting rods is covered with a damping rubber layer. The distance between the outer surfaces of the damping rubber layers of the two connecting rods is smaller than the outer diameter of the cable. One end of the cable passes through the cable guide.

10. The apparatus of claim 6, wherein the fixing bracket includes left / right handles, an upper connecting rod, a lower connecting rod, and left / right connecting arms, the two ends of the upper connecting rod being used to fix the left and right sides of the upper part of the waterproof mobile smart terminal or the waterproof protective shell of the mobile smart terminal, the lower connecting rod being used to limit the lower end of the waterproof mobile smart terminal or the waterproof protective shell of the mobile smart terminal, the two ends of the upper connecting rod and the lower connecting rod being fixedly connected to the left / right handles respectively, one end of each of the left / right connecting arms being fixedly connected to the reel fixing plate, and the other end of each of the left / right connecting arms being fixedly connected to one end of the left / right handle respectively.

11. The apparatus of claim 10, wherein the fixing bracket further comprises an upper pressure plate and a lower pressure plate, the upper pressure plate being fixed to the outer surface of the upper connecting rod and the lower pressure plate being fixed to the outer surface of the lower connecting rod.

12. The apparatus as claimed in claim 10 or 11, wherein the cable reel further includes a rotation control trigger, one end of which is connected to the upper connecting rod via a rotating shaft, the end of the rotation control trigger away from the rotating shaft having a protrusion, a pressing end of the rotation control trigger near the rotating shaft, a spring between the rotation control trigger and the upper connecting rod, the spring being located between the pressing end and the protrusion, and a plurality of beveled protrusions being provided around the periphery of the surface of the antenna base, the beveled protrusions forming a snap-fit ​​engagement with the protrusion of the rotation control trigger, such that when the rotation control trigger is not engaged, only the cable can be retracted; when the rotation control trigger is engaged, the cable can be retracted and released.

13. The apparatus of claim 10, wherein a plurality of metal nuts are provided on the left / right grips, the metal nuts being embedded in the left / right grips, the metal nuts serving as interfaces for connecting and securing other auxiliary devices.

14. The apparatus as claimed in claim 1, wherein, The edges of the antenna base are designed with a toothed structure.

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