SUBMERSIBLE PROPULSION DEVICE AND DIVING SUIT

Abstract

A submersible propulsion device and diving suit. The propulsion device includes: at least one angle sensor assembly having a first sensing unit to be disposed on a thigh and a second sensing unit to be disposed on a calf on the same side of the diver, and being configured to sense an angle between a thigh and a calf on a corresponding side of the diver based on a relative positional relationship between the respective first sensing unit and second sensing unit; at least one propeller having a propeller body and battery module; and a controller connected to the angle sensor assembly and the propeller respectively, so as to control the propeller based on an angle signal sensed by the angle sensor assembly. The submersible propulsion device is flexible in configuration and convenient to control, and can free both hands.

Claims

1. A submersible propulsion device, comprising: at least one angle sensor assembly, the at least one angle sensor assembly comprising a first sensing unit to be disposed on a thigh and a second sensing unit to be disposed on a calf on the same side of the diver, and the at least one angle sensor assembly being configured to sense an angle between a thigh and a calf on a corresponding side of the diver based on a relative positional relationship between the respective first sensing unit and second sensing unit; at least one propeller, comprising: a propeller body and at least one battery module; and a controller, wherein the controller is connected to the at least one angle sensor assembly and the at least one propeller respectively, so as to control the at least one propeller based on an angle signal sensed by the at least one angle sensor assembly.

2. The submersible propulsion device according to claim 1, wherein the at least one propeller can switch between a first state with the propeller body connected to the at least one battery module and a second state with the propeller body separate from the at least one battery module.

3. The submersible propulsion device according to claim 1, wherein the at least one angle sensor assembly is a high-performance three-dimensional motion attitude measurement system based on Micro-Electro-Mechanical System MEMS technology, wherein the at least one angle sensor assembly each comprises a three-axis gyroscope, a three-axis accelerometer, a three-axis electronic compass and a processor.

4. The submersible propulsion device according to claim 1, wherein the submersible propulsion device further comprises a wearable suit, with the controller and the at least one angle sensor assembly attached to the wearable suit, so that when the wearable suit is worn on a diver, the first sensing unit and the second sensing unit of the at least one angle sensor assembly are positioned at the thigh and calf on the same side of the diver, and the controller is positioned at the front of the diver's waist or chest.

5. The submersible propulsion device according to claim 2, wherein the at least one propeller comprises a single propeller attached in a first state to an oxygen tank on the back of a diver, wherein the at least one angle sensor assembly comprises a single angle sensor assembly worn on the left or right side of the diver, and the controller controls the single propeller to output forward or backward thrust based on an angle signal sensed by the single angle sensor assembly.

6. The submersible propulsion device according to claim 2, wherein the at least one propeller comprises a left-side propeller and a right-side propeller respectively worn on the left and right sides of a diver, wherein the at least one angle sensor assembly comprises a left-side angle sensor assembly and a right-side angle sensor assembly respectively worn on the left and right sides of the diver, and the controller controls the left-side propeller based on a first angle signal sensed by the left-side angle sensor assembly, and the controller controls the right-side propeller based on a second angle signal sensed by the right-side angle sensor assembly.

7. The submersible propulsion device according to claim 6, wherein the left-side propeller and the right-side propeller can be installed in any one of the following ways: attaching the left-side propeller and the right-side propeller in a first state to the left and right sides of an oxygen tank on the back of a diver, attaching the left-side propeller and the right-side propeller in a first state to the left and right sides of the body of the diver, or the left-side propeller and the right-side propeller each being in a second state, wherein propeller bodies of the left-side propeller and the right-side propeller are attached to the left and right sides of the body of the diver, and at least one battery module of the left-side propeller and the right-side propeller is respectively attached to the left and right sides of the oxygen tank on the back of the diver.

8. The submersible propulsion device according to claim 1, wherein the first sensing unit and/or the second sensing unit per se is configured with a battery and is wirelessly connected to the controller, wherein the controller per se is configured with a battery and is wirelessly connected to the at least one propeller; or the first sensing unit, the second sensing unit, and the controller are connected via cables, and/or the controller is connected to the at least one propeller via cables.

9. The submersible propulsion device according to claim 2, wherein when the at least one propeller is in a first state, the propeller body is connected to the at least one battery module via a waterproof connector; and/or when the at least one propeller is in a second state, the propeller body is connected to the at least one battery module through an adapter, wherein the adapter comprises a cable, with a first end and a second end of the cable connected to the propeller body and the at least one battery module through a waterproof connector respectively; wherein the waterproof connector comprises: a male waterproof connector and a female waterproof connector respectively disposed at ends of both components to be connected to each other.

10. The submersible propulsion device according to claim 9, wherein the male waterproof connector comprises: a male connector body, wherein an end of the male connector body has a first base plane; an annular boss protruding from the first base plane, wherein at least one electrical terminal is disposed in the annular boss; and a pair of clamping arms disposed on opposing sides at the end of the male connector body in the vicinity of the first base plane.

11. The submersible propulsion device according to claim 10, wherein the annular boss is in the shape of an oval track, and the pair of clamping arms are disposed at opposing linear sections of the annular boss, wherein the clamping arms have hook portions, with the width of the hook portions ranging from 80% to 100% of the width of the linear sections.

12. The submersible propulsion device according to claim 10, wherein the male waterproof connector further comprises a first sealing member disposed around the annular boss, wherein the first sealing member is disposed at a junction of the annular boss and the first base plane.

13. The submersible propulsion device according to claim 10, wherein the annular boss is further provided with a fool-proof portion formed as either protrusion or groove.

14. The submersible propulsion device according to claim 10, wherein each of the clamping arms comprises: a first segment pivotally connected to the male connector body; and a second segment pivotally connected to the first segment.

15. The submersible propulsion device according to claim 14, wherein the pair of the clamping arms can switch between a locked state and a free state; in the locked state, the first segment and the second segment are substantially collinear, with the hook portions of the second segment buckling notch of the corresponding female waterproof connector; in the free state, the first segment and the second segment can rotate along their respective rotation axes; in the free state, when the male waterproof connector abuts with the female waterproof connector, and the hook portions of the second segments of the pair of clamping arms are engaging the notches of the corresponding female waterproof connector, the second segments of the pair of clamping arms are pressed inwardly so that the second segments rotate around the notches, thereby switching the clamping arms from the free state to the locked state.

16. The submersible propulsion device according to claim 10, wherein a connecting bulge is provided on one side of the male connector body extending to the first base plane, wherein the connecting bulge has a T-shaped cross-section.

17. The submersible propulsion device according to claim 10, wherein the female waterproof connector is used to connect with the male waterproof connector, the female waterproof connector comprising: a female connector body, wherein an end of the female connector body has a second base plane; an annular groove recessed into the second base plane, wherein electrical terminals are provided in the annular groove; and a pair of notches disposed on opposing sides at the end of the connector body in the vicinity of the second base plane, the pair of notches being used to receive a pair of clamping arms of the male waterproof connector.

18. The submersible propulsion device according to claim 1, wherein the at least one propeller comprises: a propeller body; one or more intermediate battery modules; and an end battery module or end cap; wherein the intermediate battery module comprises opposing ends respectively configured as a male waterproof connector and a female waterproof connector.

19. A diving suit, comprising: a diving suit body, the diving suit body being configured to be worn by a diver and covering at least both legs and the body of the diver; at least one angle sensor assembly, the at least one angle sensor assembly comprising a first sensing unit to be disposed on a thigh and a second sensing unit to be disposed on a calf of the diving suit body corresponding to the same side of the diver, and the at least one angle sensor assembly being configured to sense an angle between a thigh and a calf on a corresponding side of the diver based on a relative positional relationship between the respective first sensing unit and second sensing unit; and a controller, the controller being attached to the diving suit body at a position corresponding to the front of the diver's waist or chest, and the controller being connected to the at least one angle sensor assembly wirelessly or via cables embedded in the diving suit body.

20. The diving suit according to claim 19, wherein the controller further comprises a port for connecting to at least one propeller, the port being either a wired connection port or a wireless connection port, wherein the at least one angle sensor assembly comprises a left-side angle sensor assembly and a right-side angle sensor assembly.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The disclosure of the present application will become easier to understand with reference to the drawings. It can be readily appreciated by a person skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. In addition, similar numerals in the drawings denote similar components, wherein:

[0053] FIG. 1 shows a top view of a diver wearing a submersible propulsion device according to an embodiment.

[0054] FIG. 2 shows a side view of a diver wearing a submersible propulsion device according to an embodiment.

[0055] FIG. 3 shows a front view of a diver wearing a submersible propulsion device according to another embodiment.

[0056] FIG. 4 shows a side view of a diver wearing the submersible propulsion device illustrated in FIG. 3.

[0057] FIG. 5 shows a rear view of a diver wearing a submersible propulsion device illustrated in FIG. 3.

[0058] FIG. 6 shows a rear view of a diver wearing a submersible propulsion device in an alternative way.

[0059] FIG. 7 shows a rear view of a diver wearing a submersible propulsion device in another alternative way.

[0060] FIG. 8 shows a side view of a submersible propulsion device according to an embodiment.

[0061] FIG. 9 shows a perspective view of a submersible propulsion device illustrated in FIG. 8.

[0062] FIG. 10 and FIG. 11 show perspective views of a propeller body of a submersible propulsion device from different angles according to an embodiment.

[0063] FIG. 12 and FIG. 13 show perspective views of a battery module of a submersible propulsion device from different angles according to an embodiment.

[0064] FIG. 14 shows an exploded view of a male waterproof connector of a submersible propulsion device according to an embodiment.

[0065] FIG. 15 shows an end view of a male waterproof connector of a submersible propulsion device according to an embodiment.

[0066] FIG. 16 shows another perspective view of a battery module of a submersible propulsion device according to an embodiment.

[0067] FIG. 17 shows a side view of the connection between a male waterproof connector and a female waterproof connector of a submersible propulsion device according to an embodiment.

[0068] FIG. 18 shows a rear view of a diving suit according to an embodiment.

[0069] FIG. 19 shows a side view of a diving suit according to an embodiment; and

[0070] FIG. 20 shows a front view of the diving suit according to an embodiment.

DETAILED DESCRIPTION

[0071] A wearable submersible propulsion device according to the embodiments of the present application is illustrated with reference to FIG. 1 and FIG. 2. The wearable submersible propulsion device comprises: a battery module; at least one propeller connected to the battery module, e.g. at least one propeller 100 comprising a left-side propeller and a right-side propeller in the illustrated embodiment; at least one angle sensor assembly, e.g. at least one angle sensor assembly comprising a left-side angle sensor assembly and a right-side angle sensor assembly in the illustrated embodiment, wherein each angle sensor assembly respectively comprises a first sensing unit 53, 51 disposed on a thigh 93, 91 and a second sensing unit 54, 52 disposed on a calf 94, 92 on a corresponding side of a diver, and is configured to sense an angle between the thigh 93, 91 and the calf 94, 92 on the corresponding side of the diver based on a relative positional relationship between the respective first sensing unit 53, 51 and second sensing unit 54, 52; and a controller 60 connected to at least one angle sensing assembly and at least one propeller respectively. In the embodiments described in detail hereinafter, two propellers respectively on the left and right sides and two angle sensor assemblies respectively on the left and right sides are taken as examples. However, in alternative embodiments, only a single propeller and a single angle sensor assembly may also be adopted, where the propeller can be worn on the back, and the angle sensor assembly is installed on a thigh and a calf on one side. The controller is configured to control the operating state of the at least one propeller based on an angle between a thigh and a calf on one or both sides of the diver.

[0072] As illustrated in the drawings, in some embodiments, the battery module may be integrated with the controller and may be strapped to the waist 9 of a diver through a waistband. The battery module can be respectively connected to the left-side propeller 100 via a first cable 67 and to the right-side propeller 100 via a second cable 68. The left-side propeller and right-side propeller 100 can be fixed to the diver's upper thighs via straps 61 and 62, respectively. In some embodiments, the controller 60 may be integrated with the battery module and also respectively connected to the left-side propeller and the right-side propeller via a first cable 67 and a second cable 68. Alternatively, the controller may also be disposed at other suitable positions, such as on the wrist, chest, etc.

[0073] In some embodiments, the first sensing unit and/or the second sensing unit of at least one angle sensor assembly may also be connected to the controller and the battery module via cables. For example, the first sensing unit and/or the second sensing unit are respectively connected to the propeller on a corresponding side via cables, and are further connected to the controller and the battery module through the propeller. In alternative embodiments, the first sensing unit and/or the second sensing unit of at least one angle sensor assembly may be configured with batteries per se and wirelessly connected to the controller. Alternatively, the first sensing unit may be connected via cables and the second sensing unit may be connected wirelessly.

[0074] In some embodiments, the first sensing unit and/or the second sensing unit are strapped to the thigh and calf of a diver via straps 63, 64, 65, 66, respectively. In alternative embodiments, the first sensing unit and/or the second sensing unit may also be adhered to the thigh and calf of a diver, or by other suitable means.

[0075] In some embodiments, the submersible propulsion device further comprises a wearable suit, with the left-side propeller, the right-side propeller, the left-side angle sensor assembly, the right-side angle sensor assembly, the battery and the controller worn on a diver through the wearable suit. The wearable suit may be available in a one-piece form, such as a diving suit in the form of either a dry suit or a wet suit. Alternatively, the wearable suit may take the form of a separate design as illustrated in the drawings, for example, including multiple straps, etc. Various cables and sensors may be embedded within the wearable suit, for sealing, preventing entanglement of cables and/or for the convenience of wearing etc.

[0076] In some embodiments, at least one angle sensor assembly may be a high-performance three-dimensional motion attitude measurement system based on MEMS technology. In some embodiments, at least one angle sensor assembly each comprises a three-axis gyroscope, a three-axis accelerometer, a three-axis electronic compass and a processor. In some embodiments, at least one angle sensor assembly may output zero-drift three-dimensional posture and orientation data expressed in quaternions and Euler angles in real time by utilizing quaternion-based three-dimensional algorithms and specialized data fusion technology. Such sensor technologies are commonly applied in the field of human posture capture.

[0077] A diver may first wear the left-side angle sensor assembly and the right-side angle sensor assembly. Before entering the water, the left-side angle sensor assembly and the right-side angle sensor assembly can be calibrated by positioning the diver in a standing or lying flat position to set the three-dimensional coordinate zero point. When the system is in a working state, the control software can obtain the three-dimensional coordinates of each posture sensor relative to the zero point position. Through calculations, the angle data between each pair of posture sensors fixed to the thigh and calf can be derived.

[0078] In some embodiments, the controller is configured to respectively control the operating states of the left-side propeller and right-side propeller 100 based on the angles between the thighs and calves on both sides of the diver. In some embodiments, the left-side propeller and right-side propeller 100 can respectively output force either forward or backward. In some embodiments, the controller is configured to control the propeller on a corresponding side to output forward thrust when the angle is greater than a first angle, control the propeller on a corresponding side to stop when the angle is smaller than the first angle but greater than a second angle, and control the propeller on a corresponding side to output backward thrust when the angle is smaller than the second angle. When the angle is greater than the first angle, the magnitude of the forward thrust output by the propeller on a corresponding side increases as the angle increases. When both the left-side propeller and the right-side propeller output forward thrust, the diver will move forward; when one of the left-side propeller and the right-side propeller outputs backward thrust while the other outputs forward thrust, the diver will rotate on the spot; when one of the left-side propeller and the right-side propeller outputs backward thrust while the other stops, the diver will be able to turn; when both the left-side propeller and the right-side propeller output backward thrust, the diver will move backward, etc. Therefore, by controlling the angles between the thighs and calves of left and right legs, the diver can easily and independently control the left-side propeller and the right-side propeller, thereby executing various desired diving maneuvers. In some embodiments, the first angle may be selected from 90 to 150 degrees, so that when forward thrust is output, the diver's legs are typically in a natural state. In some embodiments, the second angle may be selected from 75 to 105 degrees, and the second angle is smaller than the first angle.

[0079] Further embodiments are introduced with reference to FIG. 3 to FIG. 17. In some embodiments, a submersible propulsion device comprises: at least one angle sensor assembly, the at least one angle sensor assembly comprising a first sensing unit to be disposed on a thigh of a diver and a second sensing unit to be disposed on a calf on the same side of the diver, and the at least one angle sensor assembly being configured to sense an angle between a thigh and a calf on a corresponding side of the diver based on a relative positional relationship between the respective first sensing unit and second sensing unit; at least one propeller 100, comprising: a propeller body 1 and at least one battery module 2, 3, 4, wherein the propeller body 1 and the battery module may be formed as one piece or as a separable modular design as described in detail hereinafter; and a controller 7, wherein the controller 7 is connected to the at least one angle sensor assembly and the at least one propeller respectively, so as to control the at least one propeller 100 based on an angle signal sensed by the at least one angle sensor assembly.

[0080] In some embodiments, wireless connection may be adopted between at least one angle sensor assembly, at least one propeller and the controller 7. Alternatively, if a cable is used to connect any two of the at least one angle sensor assembly, the at least one propeller and the controller, the cable may be embedded in a wearable suit 6 for the convenience of wearing and hiding the cable. In some embodiments, a propeller can switch between a first state with the propeller body 1 connected to the at least one battery module 2, 3, 4 (FIG. 5 and FIG. 6) and a second state with the propeller body 1 separate from the at least one battery module 2, 3, 4 (FIG. 7).

[0081] In some embodiments, the controller 7 and at least one angle sensor assembly are attached to the wearable suit 6, so that when the wearable suit is worn on a diver, the first sensing unit and the second sensing unit of the at least one angle sensor assembly are positioned at the thigh and calf of the diver, and the controller 7 is positioned at the front of the waist or chest of the diver, for the convenience of the diver to operate the controller 7.

[0082] The submersible propulsion device according to the embodiments may be flexibly configured. For example, as illustrated in FIG. 5, the at least one propeller 100 comprises a single propeller 100 attached in a first state to an oxygen tank 8 on the back of a diver. The single propeller 100 may be attached to any side of the oxygen tank 8 by straps and buckles or the like. Correspondingly, the at least one angle sensor assembly may only comprise a single angle sensor assembly worn on the left or right side of the diver, and the controller 7 controls the single propeller to output forward or backward thrust based on an angle signal sensed by the single angle sensor assembly. In this mode, the submersible propulsion device is directly attached to the oxygen tank, enabling the diver, after wearing the submersible propulsion device, to engage in diving activities in narrow spaces, such as cave diving.

[0083] In some embodiments, as illustrated in FIG. 6, at least one propeller comprises a left-side propeller 102 and a right-side propeller 101 respectively worn on the left and right sides of a diver, wherein at least one angle sensor assembly comprises a left-side angle sensor assembly and a right-side angle sensor assembly respectively worn on the left and right sides of the diver, and the controller 7 controls the left-side propeller 102 based on a first angle signal sensed by the left-side angle sensor assembly, and the controller controls the right-side propeller 101 based on a second angle signal sensed by the right-side angle sensor assembly. With this arrangement, the left-side propeller 102 and the right-side propeller 101 can be independently controlled, so that a variety of operating modes can be achieved through combination. For example, when the left-side propeller 102 and the right-side propeller 101 simultaneously output thrust forward, the diver moves forward; when the left-side propeller 102 and the right-side propeller 101 simultaneously output thrust backward, the diver moves backward; when the left-side propeller 102 and the right-side propeller 101 stop, the diver stops; when one of the left-side propeller 102 and the right-side propeller 101 outputs forward thrust while the other outputs backward thrust, the diver rotates clockwise or counterclockwise on the spot; when one of the left-side propeller 102 and the right-side propeller 101 outputs forward thrust while the other pauses, the diver is driven to turn left or right. This control method allows the diver to free both hands for performing various operations underwater.

[0084] In some embodiments, the left-side propeller and the right-side propeller can be installed as illustrated in FIG. 6, i.e. the left-side propeller 102 and the right-side propeller 101 are attached in a first state to the left and right sides of the oxygen tank on the back of the diver. Alternatively, the left-side propeller and the right-side propeller are attached in a first state to the left and right sides of the diver's body, for example, as illustrated in FIG. 1, attached to the left and right sides of the thighs. In some embodiments, as illustrated in FIG. 7, the left-side propeller and the right-side propeller are each in a second state, wherein the propeller bodies 1011, 1021 of the left-side propeller and the right-side propeller are attached to the left and right sides of the diver's body such as thighs, and at least one battery modules 1012, 1022 of the left-side propeller and the right-side propeller are respectively attached to the left and right sides of the oxygen tank on the back of the diver.

[0085] In some embodiments, the controller 7 is configured to control the propeller on a corresponding side to output forward thrust when the first angle signal or the second angle signal is in a first range, control the propeller on a corresponding side to stop when the first angle signal or the second angle signal is in a second range, and control the propeller on a corresponding side to output backward thrust when the first angle signal or the second angle signal is in a third range. In some embodiments, the first range, the second range and the third range may be continuous or separate. In some embodiments, when the first angle signal or the second angle signal is in the first range and the third range, the controller 7 may be configured such that the magnitude of the forward thrust and/or backward thrust output by the propeller on a corresponding side varies with the first angle signal or the second angle signal, wherein the controller is configured such that the magnitude of the forward thrust and/or backward thrust output by the propeller on the corresponding side increases as the first angle signal or the second angle signal increases, or decreases as the first angle signal or the second angle signal increases.

[0086] In some embodiments, the first sensing unit and/or the second sensing unit per se is configured with a battery and is wirelessly connected to the controller 7, wherein the controller 7 per se is configured with a battery and is wirelessly connected to at least one propeller 100; or the first sensing unit, the second sensing unit, and the controller are connected via cables, and/or the controller is connected to the at least one propeller via cables.

[0087] Referring to FIG. 8 and FIG. 9, there is shown a submersible propeller according to one embodiment. The submersible propeller, for example, is to be worn on a diver or an oxygen tank to provide propulsion underwater. In this embodiment, the submersible propeller adopts a modular design, comprising a propulsion device body 1, intermediate battery modules 2, 3 and an end battery module or end cover 4. The modular-designed submersible propeller can select an appropriate number of battery modules based on the target duration of the dive, thus providing flexibility and convenience.

[0088] Referring to FIG. 10 and FIG. 11, there is shown a propeller body 1 of a submersible propeller. The propeller body 1 mainly comprises a propeller portion 11, and a waterproof connector 13 which is a male waterproof connector in the illustrated embodiment and will be described in detail hereinafter. The propeller portion 11 has a substantially cylindrical shape, and accommodates a motor 110 and an impeller 12 connected to the motor 110 therein. As illustrated in FIG. 11, one end of the propeller portion 11 is open while the other end is connected to the waterproof connector 13. Side of the propeller portion 11 is grate-like, and includes side openings 111. In some embodiments, one of the open end of the propeller portion 11 and the side openings 111 serves as a water inlet while the other serves as a water outlet, depending on the rotation direction of the motor 110. Although not shown, the propeller body 1 may also comprise a control device or a signal receiver, etc., so that the thrust direction of the submersible propeller can be determined based on a control signal. For example, the end battery module or end cover 4 may have connection lines or a wireless module to receive the control signal, etc. It shall be appreciated that the submersible propeller as illustrated is merely exemplary, and in alternative embodiments, the specific structure of the submersible propeller may vary.

[0089] The intermediate battery module 2 according to the embodiments is introduced with reference to FIG. 12 to FIG. 17. The intermediate battery module 2 may have opposing first and second ends, wherein the first end is in the form of a male waterproof connector 23, and the second end is in the form of a female waterproof connector 24. The second end 24 of the intermediate battery module 2 may be connected to the male waterproof connector 13 of the propeller body. It shall be appreciated that the first end of the intermediate waterproof module 2 may be connected to the second end of another intermediate battery module 3 or directly connected to the end battery module or end cover 4. It shall be appreciated that an assembled submersible propeller may have 0, 1, 2 or any appropriate number of intermediate battery modules. In addition, the waterproof connector 13 of the propeller body 1 may also be constructed as a female waterproof connector, and the end battery module or end cover 4 at the end of the submersible propeller may have a waterproof connector opposing to the waterproof connector of the propeller body 1.

[0090] The shape of the male waterproof connector is described in detail hereinafter using the male waterproof connector 23 as an example. The male waterproof connector 23 according to the embodiments comprises a male connector body, wherein an end of the male connector body has a first base plane 231; an annular boss 232 protruding from the first base plane 231, wherein at least one electrical terminal 234 is provided in the annular boss 232; and a pair of clamping arms 235 disposed on opposing sides at the end of the male connector body in the vicinity of the first base plane 231.

[0091] In some embodiments, the annular boss 232 has an oval track shape. Specifically, the annular boss 232 may have opposing linear sections 2321 and opposing arc sections 2322, and the annular boss 232 surrounds a portion 233 of the first base plane 231, with the pair of clamping arms 235 disposed at the opposing linear sections 2321 of the annular boss. In some embodiments, as clearly shown in FIG. 15, the clamping arms have hook portions 2325, the width e of which is similar to the width d of the linear sections 2321 of the annular boss 2325. For example, the width e of the hook portions 2325 of the clamping arms occupy a range of 80% to 100% of the width d of the linear sections 2321. A greater width of the hook portions 2325 of the clamping arms can achieve a larger contact area and a more uniform axial pressure.

[0092] In some embodiments, the at least one electrical terminal 234 comprises a group of power terminals 2341 and a group of signal terminals 2342 disposed at opposing arc sections of the annular boss. The power terminals 2341 and the signal terminals 2342 are separately disposed at opposing arc sections 2322, for example, in the slots of the arc sections 2322 of the annular boss 232. Alternatively, only the power terminals 2341 may be included.

[0093] In some embodiments, the annular boss may also be provided with a fool-proof portion 236 formed as either protrusion or groove. More specifically, as illustrated in FIG. 13, the opposing linear sections 2321 may be respectively provided with one large and one small circular grooves 2361, 2362, and the fool-proof portions 236 are used to prevent incorrect installation of the waterproof connector.

[0094] In some embodiments, the male waterproof connector 23 may further comprise a first sealing member 238 disposed around the annular boss. In some embodiments, the first sealing member 238 is disposed at a junction of the annular boss 232 and the first base plane 231, thus allowing for sealing in both axial and radial directions. Alternatively, two sealing members may be respectively disposed on the side of the annular boss 232 and the first base plane 231 to achieve axial and radial sealing. In some embodiments, the sealing member may be disposed at a female waterproof connector. In some embodiments, a connecting bulge extending to the first base plane 231 is provided on one side of the male connector body 237. In some embodiments, the connecting bulge 237 has a T-shaped cross-section.

[0095] In some embodiments, as illustrated in FIG. 16, the female waterproof connector has features corresponding to those of the male waterproof connector, for connection with the male waterproof connector. More specifically, the female waterproof connector 24, for example, comprises: a female connector body, wherein an end of the female connector body has a second base plane 241; an annular groove 242 recessed into the second base plane 241, wherein the electrical terminals 2441, 2442 are provided in the annular groove 242; and a pair of notches 245 disposed on opposing sides at the end of the connector body in the vicinity of the second base plane, the pair of notches 245 being used to receive a pair of clamping arms 235 of the male waterproof connector. In some embodiments, when the male waterproof connector has corresponding features, the female waterproof connector may also comprise fool-proof portions 2461, 2462 such as one large and one small cylindrical fool-proof protrusions, a connecting bulge 247 extending to the second base plane 241, and a central boss 243 in the middle of the annular groove 242. In some embodiments, both sides of the linear sections of the annular groove 242 may each be provided with a series of air holes 249.

[0096] In some embodiments, as illustrated in FIG. 14, each of the clamping arms 235 comprises: a first segment 2352 pivotally connected to the male connector body; a second segment 2355 pivotally connected to the first segment 2352, wherein an end of the second segment 2355 is provided with a hook portion 2356. The first end of the first segment 2352 is pivotally connected to an ear 2351 on either side of the male connector body via a first pivot shaft 2353, while the second end of the first segment 2352 is pivotally connected to the second segment 2355 via a second pivot shaft 2354. The first segment 2352 extends from the first end to the second end generally in a direction away from the connector, and the second segment 2355 extends from the connecting end to the hook portion 2356 in a direction toward the connector.

[0097] A pair of clamping arms 235 can switch between a locked state and a free state. As illustrated by the solid lines in FIG. 17, in the locked state, the first segment 2352 and the second segment 2355 are substantially collinear, and the hook portion 2356 of the second segment buckles the notch of the corresponding female waterproof connector. In some embodiments, the outer sides of a pair of second segments 2355 are substantially parallel, and the second segment 2355 may have openings 2350 to accommodate the first segment 2352. To increase strength, the first segment 2352 may include a plurality of parallel ribs. In the free state, the first segment 2352 and the second segment 2355 can rotate along their respective rotation axes. As illustrated in FIG. 17, in the free state, when the male waterproof connector 13 abuts with the female waterproof connector 24, the first base plane and the second base plane fit together, and the annular boss and the annular groove align with at least one terminal to transmit power and/or control signals. In addition, as illustrated by the dotted lines in FIG. 17, when the hook portions 2356 of the second segments 1355 of a pair of clamping arms are fitted into the notches of the corresponding female waterproof connector, the second segments 1355 of the pair of clamping arms are pressed inwardly with force F as an example, which causes the hook portions 1356 to rotate around the notches 245. This switches the clamping arms from the free state to the locked state, axially locks the male waterproof connector 13 and the female waterproof connector 24, and provides sufficient axial force in the locked state to compress the sealing member 238, thereby ensuring adequate underwater sealing. In some embodiments, the notches 245 may have outer edges to prevent the hook portions 1356 from being disengaged from the notches 245 when the second segments 1355 are rotated. As illustrated in FIG. 2, after assembly, the male waterproof connector and the female waterproof connector engage at the connecting bulge to connect the submersible propeller to other components, such as an oxygen tank. In addition, the present application also provides submersible propellers and battery modules according to various embodiments.

[0098] Further referring to FIG. 18 to FIG. 20, there is shown a diving suit according to various embodiments. The diving suit can be used in conjunction with a submersible propeller according to various embodiments, making it easier for a diver to wear. The diving suit comprises: a diving suit body, the diving suit body being configured to be worn by a diver and covering at least both legs and the body of the diver; at least one angle sensor assembly, the at least one angle sensor assembly comprising a first sensing unit 51, 53 disposed on a thigh and a second sensing unit 52, 54 disposed on a calf of the diving suit corresponding to the same side of the diver, and the at least one angle sensor assembly being configured to sense an angle between a thigh and a calf on a corresponding side of the diver based on a relative positional relationship between the respective first sensing unit 51, 53 and the second sensing unit 52, 54; and a controller 7, said controller 7 being attached to the diving suit body at a position corresponding to the front of the diver's waist or chest, and the controller 7 being wirelessly connected to the at least one angle sensor assembly or connected via cables embedded in the diving suit body. In some embodiments, the controller further comprises a port for connecting to at least one propeller, the port being either a wired connection port or a wireless connection port. In some embodiments, at least one angle sensor assembly comprises a left-side angle sensor assembly and a right-side angle sensor assembly. The diver may first wear a diving suit as illustrated in FIGS. 18 to 20, followed by a jacket-style buoyancy control device (BCD), and finally don a submersible propeller and an oxygen tank (both of which can be assembled beforehand, or the submersible propeller can be worn separately). After completing the setup, the diver may enter the water to perform diving activities.

[0099] The specific embodiments described above in the present application are intended to clarify the principles of the present application, with various components clearly illustrated or described to make the principles of the present invention easier to understand. A person skilled in the art can easily make various modifications or changes to the present application without deviating from its scope. Therefore, it should be understood that all of these modifications or changes are to be included within the patent protection scope of the present application.