Waist-worn underwater boosting device

Abstract

The present invention relates to a waist-worn underwater boosting device, comprising a ring-shaped body worn around the waist and a thrusting device. The ring-shaped body comprises a left arc-shaped shell, a right arc-shaped shell, a battery casing, and a connecting belt, wherein each arc-shaped shell comprises left and right inner ring shells / left and right outer ring shells which are integrally assembled; two ends of the battery casing are respectively connected, by means of movable telescopic tubes, to the left arc-shaped shell and the right arc-shaped shell in series to form a waist-worn ring shape; the battery casing, the left arc-shaped shell, and the right arc-shaped shell are located on the same circle and respectively form three main sections of the waist-worn ring-shaped body; and a battery is disposed in the battery casing. The thrusting device comprises two thrusters symmetrically mounted in the left arc-shaped shell and the right arc-shaped shell. The two arc-shaped shells are connected to each other by means of the connecting belt so as to be fastened to the waist. In the device, the battery casing and the battery therein, the left arc-shaped shell, and the right arc-shaped shell are integrated into three sections of the waist-worn ring-shaped body, and the integration of said three structures allows for integrated thrusting as a whole, thereby enhancing the coordination and consistency of thrusting and greatly improving the thrusting efficiency; in addition, two hands are freed up for carrying out more underwater operations.

Description

Waist-worn underwater propulsion device Technical Field

[0001] The present invention relates to the technical field of diving equipment, and in particular to a waist-wearable underwater thrust-boosting device. Background Art

[0002] Diving equipment is now being used in a wide range of applications, including recreational diving, underwater exploration, seabed development and salvage, and lifesaving applications. For example, diving equipment used to transport frogmen includes small frogman propulsion devices, which provide a boost to the frogman's swimming.

[0003] Currently, underwater propulsion devices on the market consist of a propeller, a battery, and the device itself. The propeller propels the user forward. To improve propulsion efficiency, a belt is tightened around the waist, while the propellers are typically attached externally to the sides. The battery is separate from the belt and can be attached externally to the waist or other parts of the body.

[0004] [Corrected 01.09.2023 in accordance with Rule 26] For example, referring to Figure 8, Chinese Patent Publication No. CN205469727U discloses a portable belt-type propulsion device for underwater snorkeling used by one person. The device comprises a belt 1, a buoyancy chamber 2, a propeller 3, a battery pack 4, a controller 5, and a display 6. The buoyancy chamber 2 is lockably connected to the upper portion of the belt 1. Two propellers 3 are provided, symmetrically arranged on either side of the belt 1. The belt 1 is also provided with a battery pack 4, a controller 5, a display 6, and a magnetic switch 7. The propellers 3 and battery pack 4 are both suspended from the belt 1, which is a sheet. As a result, the belt 1 is relatively light during underwater propulsion and will obviously be pulled by the propeller 3, which is detrimental to the overall coordination and consistency of the body during forward movement. The suspended batteries also affect overall coordination and consistency. The exposed propellers themselves also increase water resistance, thereby affecting propulsion efficiency.

[0005] There is also a handheld thruster currently available, which has two thrusters and two handles. The diver holds the two handles with both hands and dives forward under the action of the thrusters. Both hands can be adjusted at any time for easy advancement. However, this handheld thruster restrains both sides of the diver, making it difficult to complete more complex underwater operations. Summary of the Invention

[0006] In view of this, a waist-worn underwater propulsion device with integrated structure, overall integrated propulsion, coordinated propulsion and high propulsion efficiency is provided, which can free both hands at the same time, thereby performing more types of underwater operations and realizing more and more complex underwater operations.

[0007] A waist-wearable underwater propulsion device comprises an annular body worn around the waist and a propulsion device provided in the annular body, the annular body comprising a left arc-shaped shell, a right arc-shaped shell, a battery shell and a connecting belt, the left arc-shaped shell comprising a left inner ring shell and a left outer ring shell assembled into one body, the right arc-shaped shell comprising a right inner ring shell and a right outer ring shell assembled into one body, the two ends of the battery shell being connected in series with the left arc-shaped shell and the right arc-shaped shell through movable telescopic tubes to form a waist ring, the battery shell, the left arc-shaped shell and the right arc-shaped shell being located on the same circle and being the three main sections of the waist ring body respectively, the battery shell having a built-in battery, the propulsion device comprising two propellers, the two propellers being symmetrically mounted in the left arc-shaped shell and the right arc-shaped shell, the left arc-shaped shell and the right arc-shaped shell being connected by the connecting belt to be tightened around the waist.

[0008] In some preferred embodiments, the movable telescopic tube is a corrugated tube with wrinkles, and the movable telescopic tube is telescopic in the ring direction. The movable telescopic tube is a flexible bendable tube so that the angle between the arc shell and the battery shell can be adjusted by bending the movable telescopic tube. Each movable telescopic tube has a mounting ring at both ends, and the mounting rings are respectively mounted on the battery shell and the left arc shell and the right arc shell through fasteners. The two ends of the battery shell have ports respectively, and the left arc shell and the right arc shell respectively have a left port and a right port at the connection with the movable telescopic tube, and each of the ports is connected to the battery for threading.

[0009] In some preferred embodiments, the two propellers are symmetrically housed in a left arc-shaped shell and a right arc-shaped shell, respectively. The left arc-shaped shell and the right arc-shaped shell each have a cylindrical cavity, and each propeller includes a motor, a blade, and a mounting structure for mounting the motor and the blade.

[0010] In some preferred embodiments, the mounting structure includes an upper fixing ring, a lower fixing ring and an inner cylinder, the inner cylinder is supported on the inner wall of the cylindrical cavity by one or more support members, at least one of the support members is a tubular rod, the interior of the inner cylinder is hollow and connected to the tubular rod for wiring to power the motor, the cavity circumference of the cylindrical cavity is tangent between the inner and outer arcs of the arc shell, the inner cylinder is located in the cylindrical cavity, the upper fixing ring and the lower fixing ring are respectively installed at the top and bottom of the inner cylinder, the motor is installed at the top or bottom of the inner cylinder, there are multiple blades and they are divergently installed on the circumferential surface of the inner cylinder, the blades are accommodated in the cylindrical cavity, and the top and bottom of the cylindrical cavity are respectively provided with filters.

[0011] Preferably, the battery shell includes a battery compartment body, a battery bottom cover and a battery compartment cover, the battery bottom cover and the battery compartment cover respectively cover the upper and lower ends of the battery compartment body, the battery is a battery pack, and the battery pack is accommodated in the battery compartment body.

[0012] Specifically, the battery compartment body has an inner curved shell that fits the waist, the battery pack is covered with a battery bottom shell, the battery bottom shell is installed in the battery compartment body, the battery pack is connected through a connector male seat and a connector female seat, the top of the battery compartment body has a left fixed slot, a right fixed slot and a connecting cavity located between the two fixed slots, the connector female seat is installed in the connecting cavity, the left fixed slot and the right fixed slot are respectively equipped with a left main control board and a right main control board, the left main control board and the right main control board are electrically connected to the external cables through a left cable fixing plate and a right cable fixing plate respectively.

[0013] Furthermore, the left arc-shaped shell and / or the right arc-shaped shell are respectively provided with at least one function button, and the arc-shaped shell with the function button is provided with a button fixing part on the inner wall of its inner ring shell, and the corresponding outer ring shell is provided with at least one button hole, each of the button holes corresponding to a function button is exposed, and the button fixing part has a fastening rod, and each of the function buttons has a buckle portion extending downward on both sides in the length direction, and the buckle portion is fastened or separated from the fastening rod.

[0014] Furthermore, the connecting belt is a belt, and the belt is assembled with a buckle to adjust the length of the connecting belt and fasten the belt, one end of the connecting belt is fixedly connected to one of the left arc-shaped shell and the right arc-shaped shell, the buckle is provided in the other of the left arc-shaped shell and the right arc-shaped shell, and the other end of the connecting belt is fastened to the buckle, the belt has a plurality of teeth arranged evenly at intervals, the buckle includes a front clamping element, a rear clamping component, and a front clamping plate, the arc-shaped shell with the buckle is provided with a mounting seat on the inner wall of its inner ring shell, the mounting seat has two mounting side plates, the width between the two mounting side plates is consistent with the connecting belt so that the connecting belt can pass through, the The front clamping element includes two front axles arranged opposite to each other on the inner sides of the two mounting side plates, each front axle sleeve is provided with a front torsion spring, and the front clamping plate can be rotatably mounted on the front axle, one end of the front torsion spring presses against the inner side of the front clamping plate and the other end presses against the inner wall of the corresponding inner ring shell and is configured to maintain the tensioning force of the front clamping plate pressing downward, and the rear clamping component includes two rear axles arranged opposite to each other on the inner sides of the two mounting side plates, each rear axle sleeve is provided with a rear torsion spring, and the rear clamping plate can be rotatably mounted on the rear axle, one end of the rear torsion spring presses against the inner side of the rear clamping plate and the other end presses against the inner wall of the corresponding inner ring shell, and the rear torsion spring is configured to keep the tooth pattern pressed when the rear clamping plate is pressed down.

[0015] Specifically, the bottom end of the rear clamping component has a buckle edge that is locked into the tooth spacing, and the top end of the rear clamping component has a wrench part. The front axis and the rear axis are arranged in parallel with a predetermined distance. The tightening direction of the front clamping plate is opposite to the tightening direction of the rear clamping plate. The rear clamping plate is clamped in the predetermined tooth position and is kept tightened under the action of the rear torsion spring. The front clamping plate has a window to allow the wrench part to extend upward. The front clamping plate covers the rear clamping plate when pressed down. When the wrench part is pressed downward, it is opposite to the downward rotation direction of the rear clamping plate and covers the front clamping plate.

[0016] Specifically, the inner sides of the left arc-shaped shell and / or the right arc-shaped shell are respectively provided with a left anti-slip pad and a right anti-slip pad to increase the wearing stability of the underwater propulsion device. The corresponding inner ring shell and outer ring shell are tightly combined and installed together through fasteners.

[0017] In the above-mentioned waist-worn underwater propulsion device, the left and right arc-shaped shells both include an inner and outer ring shells assembled into one body. The two ends of the battery shell are connected in series with the left and right arc-shaped shells through movable telescopic tubes, so that the left and right arc-shaped shells and the battery shell are integrated into a trinity, achieving structural integration. The overall structure is a continuous ring, and the propellers on both sides are enclosed in the left and right arc-shaped shells, including the inner and outer ring shells. The outer periphery of the inner and outer ring shells is arc-shaped, consistent with the overall contour of the ring, and there will be no abrupt external contour, thereby effectively reducing water resistance and integrating the propeller and battery shell and its internal battery into one body to achieve overall integrated propulsion. Moreover, this serial connection and overall assembly method also promotes the coordination and consistency between the propeller and the shell, greatly improving the propulsion efficiency. Moreover, compared with other external propulsion devices, the overall coordination is good, and it also avoids interference with the propeller by underwater waves or other external factors, and will not affect the forward direction. Furthermore, the battery housing and its internal battery arrangement within the ring also avoids cable entanglement when mounted externally, resulting in a simpler overall structure and further reducing unnecessary water resistance. Furthermore, since the battery and thrusters are enclosed within the left and right curved housings, the diver's hands are freed, allowing them to perform a wider range of underwater operations and accomplish more complex tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of the three-dimensional structure of a waist-wearable underwater propulsion device provided in an embodiment of the present invention.

[0019] FIG2 is a schematic diagram of the structure of the waist-worn underwater propulsion device shown in FIG1 from a top view.

[0020] FIG3 is a side structural diagram of the waist-worn underwater propulsion device in FIG1 .

[0021] FIG4 is a schematic diagram of the exploded structure of the waist-worn underwater propulsion device in FIG1 .

[0022] FIG5 is a schematic diagram of a three-dimensional exploded structure of a battery shell and its internal structure in the waist-worn underwater propulsion device in FIG1 .

[0023] FIG6 is a schematic diagram of the three-dimensional structure of the lock buckle and related parts in the waist-worn underwater propulsion device in FIG1 .

[0024] FIG7 is a schematic diagram of the exploded structure of the lock and related parts in the waist-worn underwater propulsion device in FIG6 .

[0025] FIG8 is a schematic structural diagram of a conventional propulsion device. Attached photos

[0026] 10. Left arc-shaped housing; 101. Left inner ring housing; 102. Left outer ring housing; 123. Port; 113. Left port; 133. Right port; 15. Barb; 152. Tooth pattern; 16. Propeller; 160. Cylindrical cavity; 161. Motor cavity; 162. Inner cylinder; 163. Paddle; 166. Filter; 18. Button; 181. Button hole; 186. Buckle; 20. Right arc-shaped housing; 201. Right inner ring housing; 202. Right outer ring housing; 23. Anti-skid pad; 25. Fastener; 26. Mounting side panel; 127. Mounting seat; 105 (205) Connecting cover; 27. Buckle; 270. Front clamping element; 271. Front torsion spring; 272. Fastening rod; 273. Front clamping plate; 275. Front axle; 276. Window; 280. Rear clamping component; 283. Rear torsion spring; 285. Rear axle; 286. Wrench part; 287. Buckle edge; 301. Battery compartment body; 361. Battery bottom shell; 303. Battery bottom cover; 30. Battery shell; 308. Battery compartment cover; 331. Connector female socket; 332. Connector male socket; 351. Left fixing slot; 352. Right fixing slot; 36. Battery pack; 356. Left main control board; 357. Right main control board; 371. Left cable fixing plate; 372. Right cable fixing plate; 60. Movable telescopic tube; 61a. Upper fixing ring; 61b. Lower fixing ring. Implementation Method

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with specific embodiments and drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Please refer to Figures 1 to 4, which show a waist-worn underwater propulsion device 100 provided by an embodiment of the present invention, including an annular body worn around the waist and a propulsion device provided on the annular body. The annular body includes a left arc-shaped shell 10, a right arc-shaped shell 20, a battery shell 30 and a connecting belt. The left arc-shaped shell 10 includes a left inner ring shell 101 and a left outer ring shell 102 assembled into one body. The right arc-shaped shell 20 includes a right inner ring shell 201 and a right outer ring shell 202 assembled into one body. Both ends of the battery shell 30 are connected. The left arc-shaped shell 10 and the right arc-shaped shell 20 are respectively connected in series with each other through a movable telescopic tube 60 to form a waist ring. The battery shell 30, the left arc-shaped shell 10 and the right arc-shaped shell 20 are located on the same circle and are respectively the three main sections of the waist ring body. The battery shell 30 has a built-in battery. The propulsion device includes two propellers 16, and the two propellers 16 are symmetrically installed in the left arc-shaped shell 10 and the right arc-shaped shell 20. The left arc-shaped shell 10 and the right arc-shaped shell 20 are connected by the connecting belt to be tightened to the waist.

[0029] Specifically, the movable telescopic tube 60 is a corrugated bellows, and the movable telescopic tube 60 is retractable in the circumferential direction. More advantageously, the movable telescopic tube is a flexible bendable tube, so that the angle between the arc-shaped shell 10, 20 and the battery shell 30 can be adjusted by bending the movable telescopic tube 60, thereby adjusting the inner curvature of the left and right arc-shaped shells 10, 20 and the battery shell 30, thereby adapting to people with different waist circumferences or even different body shapes. Since the left and right arc-shaped shells 10, 20 and the battery shell 30 are all made of hard materials, such as hard plastic shells, the three hard plastic shells can enhance the hardness, strength and service life of the entire booster device 100. By using the movable telescopic tube 60 as a movable joint, it is more advantageous to use a flexible movable telescopic tube 60 to connect the hard materials through a flexible connection, achieving a combination of rigidity and flexibility, with both hardness and strength, flexibility and bendability, flexible use, and a safer and more reliable structure. As shown in FIG4 , each movable telescopic tube 60 has mounting rings 61 at each end. These mounting rings 61 are respectively mounted to the battery housing 30 and the left and right curved housings 10 and 20 via fasteners 25 , connecting the battery housing 30, the left and right curved housings 10 and 20 in series on a ring. The battery housing 30 has ports 123 at each end. The left and right curved housings 10 and 20, respectively, have left and right ports 113 and 133 at their respective junctions with the movable telescopic tube 60. These ports 123 are connected to facilitate wiring and battery power supply.

[0030] In some preferred embodiments, the two propellers 16 are symmetrically housed in the left arc-shaped housing 10 and the right arc-shaped housing 20, respectively. The left arc-shaped housing 10 and the right arc-shaped housing 20 each have a cylindrical cavity 160 therein. Each propeller 16 includes a motor, a blade 163, and a mounting structure for mounting the motor and the blade 163. The motor and the blade 163 are housed in the cylindrical cavity 160.

[0031] Specifically, the mounting structure comprises an upper retaining ring 61a, a lower retaining ring 61b, and an inner cylinder 162. The circumference of the cylindrical cavity 160 is tangential to the inner and outer arcs of the arc-shaped housing, and the inner cylinder 162 is located within the cylindrical cavity 160. Preferably, the inner cylinder 162 is supported on the inner wall of the cylindrical cavity 160 by one or more support members. As shown in Figure 4, the support members include at least one hollow rod 165. The interior of the inner cylinder 162 is also preferably hollow and sealed by a motor cover. The motor is mounted at the bottom of the inner cylinder 162, and the propellers 163 are connected to the motor output. The inner cylinder 162 is preferably a waterproof and sealed structure. At least one support member is a tubular rod 165 that extends from the cylindrical cavity 160 or connects to the outside of the cylindrical cavity 160, facilitating wiring. By passing wires through the tubular rod 165 and connecting to the battery to power the motor, the structure achieves both waterproofing and the integration of the battery and propeller with the ring.

[0032] As shown in Figure 4, the upper and lower fixing rings 61a and 61b are respectively mounted on the top and bottom ends of the inner cylinder 162, and the upper and lower filter screens 166 are respectively mounted on the upper and lower fixing rings 61a and 61b. The upper and lower fixing rings 61a and 61b are simultaneously located at the upper and lower ends of the cylindrical cavity 160. The motor is mounted on the top or bottom end of the inner cylinder 162. In some preferred embodiments, the upper and lower fixing rings 61a and 61b are both connected to the corresponding arc-shaped housing in a waterproof and sealed manner. For example, the upper and lower fixing rings 61a and 61b are each provided with a sealing gasket. The filter screens 166 are respectively provided at the upper and lower ends of the cylindrical cavity 160, with one end being the water inlet end and the other end being the water outlet end. Preferably, the cylindrical cavity 160 and the left arc-shaped shell 10 or the right arc-shaped shell 20 are waterproof and sealed, mainly because the upper fixing ring 61a and / or the lower fixing ring 61b are waterproof and sealed at the connection between the left and right arc-shaped shells 10 and 20. In this way, wiring can be routed in the remaining internal parts of the left and right arc-shaped shells 10 and 20 except the cylindrical cavity 160 to electrically connect the battery to the motor and to the button at the same time without worrying about the influence of water on the electrical connection.

[0033] As shown in FIG4 , the paddles 163 are provided in a plurality and are installed divergently on the circumferential surface of the inner cylinder 162 . The paddles 163 are accommodated in the cylindrical cavity 160 . Filters 166 are provided at the top and bottom of the cylindrical cavity 160 .

[0034] As shown in Figure 5, the battery housing 30 preferably includes a battery compartment body 301, a battery bottom cover 303, and a battery compartment cover 308. The battery bottom cover 303 and the battery compartment cover 308 respectively cover the upper and lower ends of the battery compartment body 301. The battery is a battery pack 36, which is accommodated in the battery compartment body 301. In addition, in addition to the battery, the battery housing also has an integrated control module to control the operation of the battery and the propeller, such as setting the gear position, setting the speed, and other related parameters.

[0035] Specifically, the battery compartment body 301 has an inner arc shell 310 that fits the waist, the battery pack 36 is covered with a battery bottom shell 361, the battery bottom shell 361 is installed in the battery compartment body 301, the battery pack 36 is connected through the connector male seat 332 and the connector female seat 331, the top of the battery compartment body 301 has a left fixed slot 351, a right fixed slot 352 and a connecting cavity 355 located between the two fixed slots, the connector female seat 331 is installed in the connecting cavity 355, the left fixed slot 351 and the right fixed slot 352 are respectively equipped with a left main control board 356 and a left main control board 357, the left main control board 356 and the left main control board 357 are respectively electrically connected to external cables through the left cable fixing plate 371 and the right cable fixing plate 372, for example, connected to the motor in the propulsion device to supply power. The integrated control module is preferably mounted on the left main control board 356 and the right main control board 357 to control the left and right thrusters, respectively. The battery compartment 301 has the aforementioned ports 123 at either end. Ports 123 are enclosed cavities and extend into the retractable tube 60. The left and right ports 113 and 133 have essentially the same structure as port 123 and also extend into the retractable tube 60 to connect to the ports 123 at their respective ends via fasteners. Furthermore, a waterproof seal may be provided at the joints.

[0036] Furthermore, the left arc-shaped shell 10 and / or the right arc-shaped shell 20 are each provided with at least one function button 18. The arc-shaped shell with the function button 18 is provided with a button fixing member on the inner wall of its inner ring shell, and the corresponding outer ring shell 102 is provided with at least one button hole 181, each of which exposes a corresponding function button 18. The button fixing member has a fastening rod 272, and each function button 18 has a fastening portion 186 extending downward on both sides in the longitudinal direction. The fastening portion 186 is fastened or separated with the fastening rod 272. The illustrated embodiment shows at least two function buttons 18, each of which is a longitudinally long button, arranged side by side and exposed in the arc-shaped shell, making it easy to touch and press. The function button 18 is mainly used to control the entire machine power on and off and the high and low speed gear switching. The overall function button 18 has a neat and elegant structure and is easy to use.

[0037] As shown in Figures 2 and 4 , the connecting strap is a waistband 15, which is assembled with a buckle 27 to adjust its length and tighten it. One end of the connecting strap is fixedly connected to one of the left or right curved housings 10, 20. The illustration shows it fixedly connected to the left curved housing 10, similar to the tightening direction of a trouser waistband. The buckle 27 is located on the other of the left or right curved housings 10, 20, and the other end of the connecting strap is fastened to the buckle 27. To strengthen the connection, this embodiment uses the waistband 15, which has multiple teeth 152 arranged at even intervals.

[0038] As shown in FIG4 , the connecting belt is connected to the left arc-shaped housing 10 through a fastener, and the end of the connecting belt is sleeved with a

[0039] As shown in Figures 4, 6 and 7, the latch 27 includes a front clamping element 270, a rear clamping component 280, and a front clamping plate 273. The arc-shaped housing with the latch 27 is provided with a mounting seat 127 on the inner wall of its inner ring housing. The mounting seat 127 has two mounting side plates 26. The width between the two mounting side plates 26 is consistent with that of the connecting belt so that the connecting belt can pass through. The front clamping element 270 includes two front shafts 275 arranged opposite to the inner sides of the two mounting side plates 26. Each front shaft 275 is sleeved with a front torsion spring 271. The front clamping plate 273 is rotatably mounted on the front shaft 275. One end of the front torsion spring 271 abuts against the inner side of the front clamping plate 273 and the other end abuts against the inner wall of the corresponding inner ring housing. The spring is configured to maintain a downward pressure on the front clamping plate 273. The rear clamping component 280 includes two rear axles 285 arranged opposite to each other on the inner sides of the two mounting side plates 26, each rear axle 285 is sleeved with a rear torsion spring 283, and the rear clamping component 280 can be rotatably mounted on the rear axle 285, one end of the rear torsion spring 283 abuts against the inner side of the rear clamping plate 281 and the other end abuts against the inner wall of the corresponding inner ring shell and is configured so that the tooth pattern 152 is kept compressed when the rear clamping component 280 is pressed down.

[0040] Specifically, the bottom end of the rear clamping member 280 has a buckle edge 287 that fits into the spacing between the teeth 152. The buckle edge 287 slightly protrudes from the bottom surface of the bottom end of the rear clamping member 280 so as to be able to clamp the teeth 152. The top end of the rear clamping member 280 has a wrench portion 286. The front shaft 275 and the rear shaft 285 are arranged parallel to each other and spaced a predetermined distance apart. The tightening direction of the front clamping plate 273 is opposite to the tightening direction of the rear clamping member 280. The rear clamping member 280 is clamped at the predetermined position of the teeth 152 and is kept pressed by the rear torsion spring 283. The front clamping plate 273 has a window 276 to allow the wrench portion 286 to extend upward. When the front clamping plate 273 is pressed down, it covers the rear clamping plate 281. When the wrench portion 286 is pressed down, it rotates in the opposite direction to the downward pressure of the rear clamping member 280 and covers the front clamping plate 273. The mounting base 127 has an inner bottom surface located between the two mounting side plates 26. The inner bottom surface is preferably a smooth, flat surface. A predetermined gap is defined between the inner bottom surface of the mounting base 127 and the buckle edge 287. This predetermined gap is substantially consistent with the thickness of the connecting band and is slightly thicker than the connecting band. Thus, after the connecting band passes through the mounting base 127 and fits into the predetermined gap between the inner bottom surface of the mounting base 127 and the buckle edge 287, the lever 286 is pulled to tighten the buckle edge 287 of the rear clamping component 280. Simultaneously, the front clamping plate 273 of the front clamping element 270 is pressed against the main body of the rear clamping component 280, thereby locking the connecting band. To release the connecting band, simply pull the lever 286 upward, and the rear clamping component 280 releases the compressed state on the connecting band tooth pattern 152, thereby releasing the connecting band. The clasp 27 and the sash 15 can be assembled to adjust the length of the sash 15 to suit different groups of people. The clasp 27 can be removed with one click, making it easy and quick to use. The clasp 27 can be used to flexibly adjust the waist fit to achieve a comfortable fit.

[0041] In addition, as shown in Figures 1 and 3, the left and right arc-shaped shells 10, 20 are provided with connecting covers 105, 205 at the ends of the installation belt 15. The connecting covers 105, 205 are installed at the opposite ends of the left and right arc-shaped shells 10, 20, that is, the two ends of the entire annular opening. The connecting covers 105, 205 and the outer contours of the left and right arc-shaped shells 10, 20 are streamlined to form curved ends. The connecting covers 105, 205 respectively have through openings to facilitate the connection belt to pass through and penetrate.

[0042] In addition, as shown in FIG3 , the inner sides of the left arc-shaped shell 10 and / or the right arc-shaped shell 20 are respectively provided with a left anti-slip pad and a right anti-slip pad 23 to increase the wearing stability of the underwater propulsion device. The left anti-slip pad and the right anti-slip pad 23 are preferably thin silicone anti-slip pads. The corresponding inner ring shell and the outer ring shell 102 are tightly combined and installed as a whole through fasteners 25. The left anti-slip pad and the right anti-slip pad are preferably arc-shaped structures, which are consistent with the arc contour of the human waist. This not only enhances the coordination of the overall propulsion assistance, but also improves the wearing comfort, protects the waist and prevents slipping. As shown in FIG1 and FIG3 , the bottom end of the battery shell 30 is also provided with a mounting buckle 33. Two buckles are shown, which are respectively provided on both sides of the bottom end of the battery shell 30 for passing other straps or slings to bind to other parts of the body to provide further safety.

[0043] In the waist-worn underwater propulsion device 100, the left and right curved shells 10 and 20 each comprise an integrally assembled inner and outer ring shells. The battery housing 30 is connected to the left and right curved shells 10 and 20 at both ends via a retractable tube 60, thereby integrating the left and right curved shells 10 and 20 with the battery housing 30 into a trinity, achieving structural integration. The overall structure forms a continuous ring, ensuring coordinated movement and preventing any component from being left hanging and causing significant resistance. Furthermore, the propellers on both sides are enclosed within the left and right curved shells 10 and 20, specifically within the inner and outer ring shells. The outer peripheries of the inner and outer ring shells are curved, substantially conforming to the overall contour of the ring, eliminating any abrupt external contours. This effectively reduces water resistance and further integrates the propellers with the battery housing 30 and its internal battery, achieving integrated propulsion. Furthermore, this serial connection and integrated assembly method promotes coordination and consistency between the propellers and the outer shell, significantly improving propulsion efficiency. Moreover, existing external propulsion devices are significantly affected by underwater waves or other external factors that interfere with the propeller, and may even change the direction and propulsion force. However, the integrated structure of the propulsion device 100 in the embodiment of the present invention has good overall coordination, avoids interference with the propeller by underwater waves or other external factors, and does not affect the forward direction. Furthermore, the structural arrangement of the battery shell 30 and the battery inside the ring also avoids cable entanglement when the device is externally mounted, thereby making the overall structure more concise and further reducing unnecessary water resistance. Furthermore, because the battery and the propellers on both sides are enclosed in the left and right curved shells, the diver's hands can be freed at the same time. After the hands are freed, they can perform more types of underwater operations and achieve more underwater operations and tasks.

[0044] It should be noted that the present invention is not limited to the above-mentioned embodiments. Based on the creative spirit of the present invention, those skilled in the art can also make other changes. These changes made based on the creative spirit of the present invention should be included in the scope of protection required by the present invention.

Claims

1. A waist-worn underwater propulsion device, comprising an annular body worn around the waist and a propulsion device arranged on the annular body, characterized in that: The annular body includes a left arc-shaped shell, a right arc-shaped shell, a battery shell and a connecting belt. The left arc-shaped shell includes a left inner ring shell and a left outer ring shell assembled in one body. The right arc-shaped shell includes a right inner ring shell and a right outer ring shell assembled in one body. The two ends of the battery shell are respectively connected in series with the left arc-shaped shell and the right arc-shaped shell through movable retractable tubes to form a waist ring shape. The battery shell, the left arc-shaped shell and the right arc-shaped shell are located on the same circle and are respectively three main sections of the waist ring-shaped body. The battery shell has a built-in battery. The propulsion device includes two propellers, and the two propellers are symmetrically installed in the left arc-shaped shell and the right arc-shaped shell. The left arc-shaped shell and the right arc-shaped shell are connected by the connecting belt to be tightened around the waist.

2. The waist-worn underwater propulsion device according to claim 1, characterized in that: The movable telescopic tube is a corrugated tube with wrinkles, and the movable telescopic tube is telescopic in the ring direction. The movable telescopic tube is a flexible bendable tube so that the angle between the arc shell and the battery shell can be adjusted by bending the movable telescopic tube. Each movable telescopic tube has a mounting ring at both ends, and the mounting rings are respectively mounted on the battery shell and the left arc shell and the right arc shell through fasteners. The two ends of the battery shell have ports respectively. The left arc shell and the right arc shell have a left port and a right port at the connection with the movable telescopic tube respectively, and the ports are respectively connected so as to be connected to the battery through threading.

3. The waist-worn underwater propulsion device according to claim 1, characterized in that: The two propellers are symmetrically accommodated in a left arc-shaped shell and a right arc-shaped shell respectively. The left arc-shaped shell and the right arc-shaped shell respectively have a cylindrical cavity. Each propeller includes a motor, a blade, and a mounting structure for mounting the motor and the blade.

4. The waist-worn underwater propulsion device as claimed in claim 3, characterized in that: The mounting structure includes an upper fixing ring, a lower fixing ring and an inner cylinder, the inner cylinder is supported on the inner wall of the cylindrical cavity by one or more supporting members, at least one of the supporting members is a tubular rod, the interior of the inner cylinder is hollow and connected to the tubular rod for wiring to power the motor, the cavity circumference of the cylindrical cavity is tangent to the inner and outer arcs of the arc shell, the inner cylinder is located in the cylindrical cavity, the upper fixing ring and the lower fixing ring are respectively installed on the top and bottom of the inner cylinder, the motor is installed on the top or bottom of the inner cylinder, there are multiple blades and they are divergently installed on the circumferential surface of the inner cylinder, the blades are accommodated in the cylindrical cavity, and the top and bottom of the cylindrical cavity are respectively provided with filters.

5. The waist-worn underwater propulsion device according to claim 1, characterized in that: The battery shell includes a battery compartment body, a battery bottom cover and a battery compartment cover, wherein the battery bottom cover and the battery compartment cover respectively cover the upper and lower ends of the battery compartment body, the battery is a battery pack, and the battery pack is accommodated in the battery compartment body. There is also an integrated control module in the battery shell to control the operation of the thruster.

6. The waist-worn underwater propulsion device as claimed in claim 5, characterized in that: The battery compartment body has an inner arc shell that fits the waist, the battery pack is covered with a battery bottom shell, the battery bottom shell is installed in the battery compartment body, the battery pack is connected through a connector male seat and a connector female seat, the top of the battery compartment body has a left fixed slot, a right fixed slot and a connecting cavity located between the two fixed slots, the connector female seat is installed in the connecting cavity, the left fixed slot and the right fixed slot are respectively equipped with a left main control board and a right main control board, the left main control board and the right main control board are electrically connected to external cables through a left cable fixing plate and a right cable fixing plate, respectively.

7. The waist-worn underwater propulsion device according to claim 1, characterized in that: The left arc-shaped shell and / or the right arc-shaped shell are respectively provided with at least one function button, and the arc-shaped shell with the function button is provided with a button fixing part on the inner wall of its inner ring shell, and the corresponding outer ring shell is provided with at least one button hole, and each button hole corresponds to exposing a function button, and the button fixing part has a clamping rod, and each function button has a clamping part extending downward on both sides in the length direction, and the clamping part is clamped or separated with the clamping rod.

8. The waist-worn underwater propulsion device according to claim 1, characterized in that: The connecting belt is a belt, and the belt is assembled with a buckle to adjust the length of the connecting belt and fasten the belt. One end of the connecting belt is fixedly connected to one of the left arc-shaped shell and the right arc-shaped shell, and the buckle is provided in the other of the left arc-shaped shell and the right arc-shaped shell, and the other end of the connecting belt is fastened to the buckle. The belt has a plurality of teeth arranged evenly at intervals. The buckle includes a front clamping element, a rear clamping component, and a front clamping plate. The arc-shaped shell with the buckle is provided with a mounting seat on the inner wall of its inner ring shell. The mounting seat has two mounting side plates. The width between the two mounting side plates is consistent with the connecting belt so that the connecting belt can pass through. The front clamping element The element includes two front axles arranged opposite to each other on the inner sides of the two mounting side plates, each front axle sleeve is provided with a front torsion spring, the front clamping plate can be rotatably mounted on the front axle, one end of the front torsion spring presses against the inner side of the front clamping plate, the other end presses against the inner wall of the corresponding inner ring shell, and is arranged to maintain the tensioning force pressing downward on the front clamping plate, the rear clamping component includes two rear axles arranged opposite to each other on the inner sides of the two mounting side plates, each rear axle sleeve is provided with a rear torsion spring, the rear clamping plate can be rotatably mounted on the rear axle, one end of the rear torsion spring presses against the inner side of the rear clamping plate, and the other end presses against the inner wall of the corresponding inner ring shell, and the rear torsion spring is arranged to maintain the compression tooth pattern when the rear clamping plate is pressed down.

9. The waist-worn underwater propulsion device as claimed in claim 8, characterized in that: The bottom end of the rear clamping component has a buckle edge that is inserted into the tooth spacing, and the top end of the rear clamping component has a wrench part. The front axis and the rear axis are arranged in parallel with a predetermined distance, and the tightening direction of the front clamping plate is opposite to the tightening direction of the rear clamping plate. The rear clamping plate is clamped in the predetermined tooth position and is kept tightened under the action of the rear torsion spring. The front clamping plate has a window to allow the wrench part to extend upward, and the front clamping plate covers the rear clamping plate when pressed down. When the wrench part is pressed downward, it is opposite to the downward rotation direction of the rear clamping plate and covers the front clamping plate.

10. The waist-worn underwater propulsion device according to claim 3, characterized in that: The inner sides of the left arc-shaped shell and / or the right arc-shaped shell are respectively provided with a left anti-slip pad and a right anti-slip pad to increase the wearing stability of the underwater propulsion device. The corresponding inner ring shell and outer ring shell are tightly combined and installed as a whole through fasteners. The columnar cavity and the left arc-shaped shell or the right arc-shaped shell are waterproof and sealed.

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