阅读说明：本技术 一种高效水下辅助推进设备及踏步式水下推进系统 (High-efficient underwater auxiliary propulsion equipment and step type underwater propulsion system ) 是由 翟华 丁帅 雷锐 张�林 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种高效水下辅助推进设备及踏步式水下推进系统。该设备包括浮筒结构、导杆结构、传动装置、传动轴套装以及螺旋桨。传动装置包括两个脚踏、外壳以及内部传动机构,内部传动机构位于外壳中且包括固定支架、两个传动齿轮、两个单向轴承、两个动力齿轮以及动力转轴。在使用者踩踏两个脚踏两者中的一者时,两个动力齿轮的旋转方向相反,两个传动齿轮的旋转方向相反,两个单向轴承的锁死方向相同,其中一个单向轴承锁死以使动力转轴跟随其中一个传动齿轮同向同步转动以带动螺旋桨转动,其中另一个单向轴承未锁死以使其中另一个传动齿轮与动力转轴反向相对转动。本发明提高运动效率,帮助使用者在水下航行过程中节省体力,提高航行速度。(The invention discloses efficient underwater auxiliary propulsion equipment and a stepping underwater propulsion system. The equipment comprises a buoy structure, a guide rod structure, a transmission device, a transmission shaft sleeve and a propeller. The transmission device comprises two pedals, a shell and an internal transmission mechanism, wherein the internal transmission mechanism is positioned in the shell and comprises a fixed support, two transmission gears, two one-way bearings, two power gears and a power rotating shaft. When a user treads one of the two pedals, the rotating directions of the two power gears are opposite, the rotating directions of the two transmission gears are opposite, the locking directions of the two one-way bearings are the same, one of the one-way bearings is locked to enable the power rotating shaft to synchronously rotate along the same direction of one of the transmission gears so as to drive the propeller to rotate, and the other one-way bearing is not locked to enable the other transmission gear to oppositely rotate relative to the power rotating shaft. The invention improves the motion efficiency, helps the user save physical strength in the underwater navigation process, and improves the navigation speed.)

1. An efficient underwater auxiliary propulsion device for assisting a user diving or swimming underwater, comprising:

a buoy structure for providing buoyancy to the user;

one end of the guide rod structure is connected with the buoy structure;

a transmission comprising two pedals, a housing and an internal transmission mechanism; the other end of the guide rod structure is connected to the shell, and the two pedals are rotatably arranged on two opposite sides of the shell and positioned on two opposite sides of a central shaft of the guide rod structure; the internal transmission mechanism is positioned in the shell and comprises a fixed bracket, two transmission gears, at least two one-way bearings, two power gears and a power rotating shaft; the fixed bracket is fixed in the shell and provided with at least two pairs of opposite side surfaces; the two power gears are coaxially arranged, rotatably mounted on one pair of opposite side surfaces and respectively in transmission connection with the rotating ends of the two pedals; the fixed bracket is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft is movably sleeved in the central hole; the two transmission gears, the at least two one-way bearings and the power rotating shaft are coaxially arranged, the two transmission gears respectively correspond to the two one-way bearings, and each transmission gear is sleeved on the power rotating shaft through the corresponding one-way bearing; the two transmission gears and the two power gears are bevel gears, and the four bevel gears are arranged in four corners and are meshed with each other;

one end of the transmission shaft is fixed on the side wall of the shell far away from the guide rod structure; an inner transmission shaft is arranged in the transmission shaft sleeve, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft; and

the propeller is sleeved at the other end of the inner transmission shaft and generates thrust for pushing the user to propel underwater when rotating;

when the user tramples one of the two pedals, the rotating directions of the two power gears are opposite, the rotating directions of the two transmission gears are opposite, the locking directions of the two one-way bearings are the same, one of the two one-way bearings is locked to enable the power rotating shaft to rotate synchronously along the same direction of one of the transmission gears so as to drive the propeller to rotate, and the other one-way bearing is not locked to enable the other transmission gear to rotate oppositely and relatively to the power rotating shaft.

2. A high efficiency underwater auxiliary propulsion device as claimed in claim 1 wherein said internal transmission further comprises two power bearings corresponding to the two power gears, respectively, and two threaded end caps corresponding to the two power bearings, respectively; two threaded shafts corresponding to the two power bearings are respectively arranged on two opposite side walls of the fixed support; each power gear is movably sleeved on the corresponding threaded shaft through the corresponding power bearing; each thread end cover is screwed on the corresponding thread shaft and limits the corresponding thread shaft and the corresponding power bearing.

3. A high efficiency underwater auxiliary propulsion device as claimed in claim 2 wherein said internal transmission further comprises two geared sleeve shafts corresponding to the two power gears, respectively; one end of each gear connecting sleeve shaft is coaxially arranged and fixedly connected with the corresponding power gear, and the other end of each gear connecting sleeve shaft is fixedly sleeved with the rotating end of the corresponding pedal.

4. A high efficiency underwater auxiliary propulsion device as claimed in claim 3 wherein said internal transmission further comprises two nylon sleeves corresponding to the two geared sleeve shafts, respectively; each nylon sleeve is sleeved on the journal of the corresponding gear connecting sleeve shaft to seal the shell.

5. A high efficiency underwater assisted propulsion apparatus as claimed in claim 1 in which the internal drive mechanism further comprises a coupling; the power rotating shaft is connected with the inner transmission shaft through the coupler.

6. A high efficiency underwater auxiliary propulsion device as claimed in claim 1 wherein said buoyancy is not less than the total weight of said pontoon structure, said guide bar structure, said transmission, said driveshaft assembly, said propeller, and said user.

7. A high efficiency underwater assisted propulsion apparatus as claimed in claim 1 wherein the pontoon structure is threadedly connected to the stem structure, the stem structure is threadedly connected to the hull, and the driveshaft assembly is threadedly connected to the hull; the inner transmission shaft and the propeller are fastened through bolts and are rigidly connected; the fixed support is of a hollow square structure and is in threaded connection with the shell.

8. An efficient underwater auxiliary propulsion device for assisting a user diving or swimming underwater, comprising:

a buoy structure for providing buoyancy to the user;

one end of the guide rod structure is connected with the buoy structure;

a transmission comprising two pedals, a housing and an internal transmission mechanism; the other end of the guide rod structure is connected to the shell, and the two pedals are rotatably arranged on two opposite sides of the shell and positioned on two opposite sides of a central shaft of the guide rod structure; the internal transmission mechanism is positioned in the shell and comprises a fixed bracket, a transmission gear, two one-way bearings, two power gears and a power rotating shaft; the fixed bracket is fixed in the shell and provided with at least two pairs of opposite side surfaces; the two power gears are coaxially arranged, rotatably mounted on one pair of opposite side surfaces and respectively in transmission connection with the rotating ends of the two pedals; the fixed bracket is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft is movably sleeved in the central hole; the transmission gear, the two one-way bearings and the power rotating shaft are coaxially arranged, and the transmission gear is sleeved on the power rotating shaft through the two one-way bearings; the transmission gear and the two power gears are both bevel gears, and the two power gears are both meshed with the transmission gear;

one end of the transmission shaft is fixed on the side wall of the shell far away from the guide rod structure; an inner transmission shaft is arranged in the transmission shaft sleeve, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft; and

the propeller is sleeved at the other end of the inner transmission shaft and generates thrust for pushing the user to propel underwater when rotating;

when the user tramples one of the two pedals, the rotating directions of the two power gears are opposite, the locking directions of the two one-way bearings are opposite, one of the two one-way bearings is locked to enable the power rotating shaft to synchronously rotate along with the transmission gear in the same direction so as to drive the propeller to rotate, and the other one-way bearing is not locked.

9. An efficient underwater auxiliary propulsion device for assisting a user diving or swimming underwater, comprising:

a buoy structure for providing buoyancy to the user;

one end of the guide rod structure is connected with the buoy structure;

a transmission comprising pedals, a housing, and an internal transmission; the other end of the guide rod structure is connected to the shell, and the pedal is rotatably installed on one side wall of the shell and positioned on one side of a central shaft of the guide rod structure; the internal transmission mechanism is positioned in the shell and comprises a fixed bracket, two transmission gears, two one-way bearings, a power gear and a power rotating shaft; the fixed bracket is fixed in the shell and provided with at least two pairs of opposite side surfaces; the power gear is rotatably arranged on one pair of opposite side surfaces and is in transmission connection with the rotating end of the pedal; the fixed bracket is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft is movably sleeved in the central hole; the two transmission gears, the two one-way bearings and the power rotating shaft are coaxially arranged, the two transmission gears respectively correspond to the two one-way bearings, and each transmission gear is sleeved on the power rotating shaft through the corresponding one-way bearing; the two transmission gears and the power gear are both bevel gears, and the two transmission gears are both meshed with the power gear;

one end of the transmission shaft is fixed on the side wall of the shell far away from the guide rod structure; an inner transmission shaft is arranged in the transmission shaft sleeve, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft; and

the propeller is sleeved at the other end of the inner transmission shaft and generates thrust for pushing the user to propel underwater when rotating;

when the user tramples the pedal, the rotating directions of the two transmission gears are opposite, the locking directions of the two one-way bearings are the same, one of the two one-way bearings is locked to enable the power rotating shaft to synchronously rotate along the same direction of the transmission gears so as to drive the propeller to rotate, and the other one-way bearing is not locked to enable the other transmission gear to oppositely rotate relative to the power rotating shaft.

10. A stepped underwater propulsion system comprising an underwater suit to be worn by a user diving or swimming underwater, characterized in that it further comprises a high efficiency underwater auxiliary propulsion device as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to auxiliary propulsion equipment in the technical field of diving, in particular to high-efficiency underwater auxiliary propulsion equipment and a stepping underwater propulsion system.

Background

Diving or swimming is leisure sports which can realize body exercising and leisure entertainment, and is widely popular. When diving or swimming, it is often helpful to save physical strength through auxiliary equipment. Most of the existing diving or swimming auxiliary equipment is non-electric, and only assists a user to float, so that the function of the existing diving or swimming auxiliary equipment is limited; most of the propelling equipment is electric equipment, certain potential safety hazards exist underwater, and meanwhile, the electric equipment faces the charging problem. Therefore, the existing auxiliary propulsion equipment is inconvenient to use, and the need for designing an efficient underwater auxiliary propulsion equipment without electric power is particularly necessary.

Disclosure of Invention

The invention provides a high-efficiency underwater auxiliary propulsion device and a stepping underwater propulsion system, aiming at solving the technical problem that the existing auxiliary propulsion device is inconvenient to use.

The invention is realized by adopting the following technical scheme: an efficient underwater auxiliary propulsion device for assisting a user diving or swimming underwater, comprising:

a buoy structure for providing buoyancy to the user;

one end of the guide rod structure is connected with the buoy structure;

a transmission comprising two pedals, a housing and an internal transmission mechanism; the other end of the guide rod structure is connected to the shell, and the two pedals are rotatably arranged on two opposite sides of the shell and positioned on two opposite sides of a central shaft of the guide rod structure; the internal transmission mechanism is positioned in the shell and comprises a fixed bracket, two transmission gears, at least two one-way bearings, two power gears and a power rotating shaft; the fixed bracket is fixed in the shell and provided with at least two pairs of opposite side surfaces; the two power gears are coaxially arranged, rotatably mounted on one pair of opposite side surfaces and respectively in transmission connection with the rotating ends of the two pedals; the fixed bracket is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft is movably sleeved in the central hole; the two transmission gears, the at least two one-way bearings and the power rotating shaft are coaxially arranged, the two transmission gears respectively correspond to the two one-way bearings, and each transmission gear is sleeved on the power rotating shaft through the corresponding one-way bearing; the two transmission gears and the two power gears are bevel gears, and the four bevel gears are arranged in four corners and are meshed with each other;

one end of the transmission shaft is fixed on the side wall of the shell far away from the guide rod structure; an inner transmission shaft is arranged in the transmission shaft sleeve, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft; and

the propeller is sleeved at the other end of the inner transmission shaft and generates thrust for pushing the user to propel underwater when rotating;

when the user tramples one of the two pedals, the rotating directions of the two power gears are opposite, the rotating directions of the two transmission gears are opposite, the locking directions of the two one-way bearings are the same, one of the two one-way bearings is locked to enable the power rotating shaft to rotate synchronously along the same direction of one of the transmission gears so as to drive the propeller to rotate, and the other one-way bearing is not locked to enable the other transmission gear to rotate oppositely and relatively to the power rotating shaft.

According to the invention, a user treads one pedal, the pedal drives the power gear to rotate and further drives the two transmission gears to rotate, and as the rotating directions of the two transmission gears are opposite and the locking directions of the two one-way bearings are the same, one transmission gear and the power rotating shaft can realize transmission, and the other transmission gear and the power rotating shaft rotate relatively, so that the power rotating shaft rotates in one direction. On the contrary, when the user steps on the other pedal, the previous transmission connection is interrupted, and the other transmission gear drives the power rotating shaft to rotate in the same direction as the previous direction, so that the propeller rotates in a single direction under the driving of the inner transmission shaft and pushes the user to propel underwater. Because the two feet of the user trample in a reciprocating way, which is similar to the stepping in situ, the whole trampling process does work, thereby greatly improving the movement efficiency, helping the user save physical strength in the underwater navigation process, improving the navigation speed and solving the technical problem that the existing auxiliary propulsion equipment is inconvenient to use.

As a further improvement of the above scheme, the internal transmission mechanism further comprises two power bearings corresponding to the two power gears respectively and two threaded end covers corresponding to the two power bearings respectively; two threaded shafts corresponding to the two power bearings are respectively arranged on two opposite side walls of the fixed support; each power gear is movably sleeved on the corresponding threaded shaft through the corresponding power bearing; each thread end cover is screwed on the corresponding thread shaft and limits the corresponding thread shaft and the corresponding power bearing.

As a further improvement of the above scheme, the internal transmission mechanism further comprises two gear connecting sleeve shafts respectively corresponding to the two power gears; one end of each gear connecting sleeve shaft is coaxially arranged and fixedly connected with the corresponding power gear, and the other end of each gear connecting sleeve shaft is fixedly sleeved with the rotating end of the corresponding pedal.

As a further improvement of the above scheme, the internal transmission mechanism further comprises two nylon sleeves corresponding to the two gear connecting sleeve shafts respectively; each nylon sleeve is sleeved on the journal of the corresponding gear connecting sleeve shaft to seal the shell.

As a further improvement of the above solution, the internal transmission mechanism further comprises a coupling; the power rotating shaft is connected with the inner transmission shaft through the coupler.

As a further improvement of the above, the buoyancy is not less than the total weight of the pontoon structure, the guide bar structure, the transmission, the driveshaft assembly, the propeller, and the user.

As a further improvement of the above scheme, the float structure is in threaded connection with the guide rod structure, the guide rod structure is in threaded connection with the shell, and the transmission shaft is sleeved and in threaded connection with the shell; the inner transmission shaft and the propeller are fastened through bolts and are rigidly connected; the fixed support is of a hollow square structure and is in threaded connection with the shell.

The present invention also provides a high efficiency underwater auxiliary propulsion device for assisting a user of underwater diving or swimming, comprising:

a buoy structure for providing buoyancy to the user;

one end of the guide rod structure is connected with the buoy structure;

a transmission comprising two pedals, a housing and an internal transmission mechanism; the other end of the guide rod structure is connected to the shell, and the two pedals are rotatably arranged on two opposite sides of the shell and positioned on two opposite sides of a central shaft of the guide rod structure; the internal transmission mechanism is positioned in the shell and comprises a fixed bracket, a transmission gear, two one-way bearings, two power gears and a power rotating shaft; the fixed bracket is fixed in the shell and provided with at least two pairs of opposite side surfaces; the two power gears are coaxially arranged, rotatably mounted on one pair of opposite side surfaces and respectively in transmission connection with the rotating ends of the two pedals; the fixed bracket is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft is movably sleeved in the central hole; the transmission gear, the two one-way bearings and the power rotating shaft are coaxially arranged, and the transmission gear is sleeved on the power rotating shaft through the two one-way bearings; the transmission gear and the two power gears are both bevel gears, and the two power gears are both meshed with the transmission gear;

one end of the transmission shaft is fixed on the side wall of the shell far away from the guide rod structure; an inner transmission shaft is arranged in the transmission shaft sleeve, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft; and

the propeller is sleeved at the other end of the inner transmission shaft and generates thrust for pushing the user to propel underwater when rotating;

when the user tramples one of the two pedals, the rotating directions of the two power gears are opposite, the locking directions of the two one-way bearings are opposite, one of the two one-way bearings is locked to enable the power rotating shaft to synchronously rotate along with the transmission gear in the same direction so as to drive the propeller to rotate, and the other one-way bearing is not locked.

The present invention also provides a high efficiency underwater auxiliary propulsion device for assisting a user of underwater diving or swimming, comprising:

a buoy structure for providing buoyancy to the user;

one end of the guide rod structure is connected with the buoy structure;

a transmission comprising pedals, a housing, and an internal transmission; the other end of the guide rod structure is connected to the shell, and the pedal is rotatably installed on one side wall of the shell and positioned on one side of a central shaft of the guide rod structure; the internal transmission mechanism is positioned in the shell and comprises a fixed bracket, two transmission gears, two one-way bearings, a power gear and a power rotating shaft; the fixed bracket is fixed in the shell and provided with at least two pairs of opposite side surfaces; the power gear is rotatably arranged on one pair of opposite side surfaces and is in transmission connection with the rotating end of the pedal; the fixed bracket is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft is movably sleeved in the central hole; the two transmission gears, the two one-way bearings and the power rotating shaft are coaxially arranged, the two transmission gears respectively correspond to the two one-way bearings, and each transmission gear is sleeved on the power rotating shaft through the corresponding one-way bearing; the two transmission gears and the power gear are both bevel gears, and the two transmission gears are both meshed with the power gear;

one end of the transmission shaft is fixed on the side wall of the shell far away from the guide rod structure; an inner transmission shaft is arranged in the transmission shaft sleeve, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft; and

the propeller is sleeved at the other end of the inner transmission shaft and generates thrust for pushing the user to propel underwater when rotating;

when the user tramples the pedal, the rotating directions of the two transmission gears are opposite, the locking directions of the two one-way bearings are the same, one of the two one-way bearings is locked to enable the power rotating shaft to synchronously rotate along the same direction of the transmission gears so as to drive the propeller to rotate, and the other one-way bearing is not locked to enable the other transmission gear to oppositely rotate relative to the power rotating shaft.

The invention also provides a stepping underwater propulsion system, which comprises an underwater suit worn by a user for underwater diving or swimming and further comprises the high-efficiency underwater auxiliary propulsion equipment.

Compared with the existing auxiliary propulsion equipment, the efficient underwater auxiliary propulsion equipment and the stepping underwater propulsion system have the following beneficial effects:

1. according to the high-efficiency underwater auxiliary propulsion device, a user treads one pedal, the pedal drives the power gear to rotate and further drives the two transmission gears to rotate, the rotation directions of the two transmission gears are opposite, the locking directions of the two one-way bearings are the same, so that transmission between one transmission gear and the power rotating shaft can be realized, and the other transmission gear and the power rotating shaft rotate relatively, so that the power rotating shaft rotates in a one-way mode. On the contrary, when the user steps on the other pedal, the previous transmission connection is interrupted, and the other transmission gear drives the power rotating shaft to rotate in the same direction as the previous direction, so that the propeller rotates in a single direction under the driving of the inner transmission shaft and pushes the user to propel underwater. Because the two feet of the user trample in a reciprocating way, which is similar to the stepping in situ, the whole trampling process does work, thereby greatly improving the movement efficiency, helping the user save physical strength in the underwater navigation process and improving the navigation speed.

2. The efficient underwater auxiliary propulsion equipment adopts a novel one-way gear transmission device, and is different from the previous pedal device in that the pedal device needs to be stepped by means of inertial rotation.

3. This high-efficient supplementary propulsion apparatus under water, it provides non-electrodynamic type's propulsion mode for the user, can prevent that electric equipment from producing the potential safety hazard under water on the one hand, and the security is high, and on the other hand need not to charge, and the cost is lower, easy maintenance moreover, facilitates the use.

4. The beneficial effects of the stepping underwater propulsion system are the same as those of the high-efficiency underwater auxiliary propulsion device, and are not repeated herein.

Drawings

Fig. 1 is an overall assembly view of a high-efficiency underwater auxiliary propulsion device of embodiment 1 of the present invention.

Fig. 2 is a schematic view of the transmission of the efficient underwater auxiliary propulsion device of fig. 1.

FIG. 3 is an isometric view of the transmission of FIG. 2 with the housing removed.

Fig. 4 is an exploded isometric view of the transmission of fig. 2.

Fig. 5 is a mechanical schematic diagram of the transmission of fig. 2 and with parts labeled.

FIG. 6 is a schematic diagram of the mechanism of the transmission in clockwise oscillation of the right foot pedal of the efficient underwater auxiliary propulsion device of FIG. 1.

FIG. 7 is a schematic diagram of the mechanism operation of the transmission when the right foot pedal of the efficient submersible auxiliary propulsion device of FIG. 1 is swung counterclockwise.

FIG. 8 is an isometric view of the transmission of FIG. 2 with a single power gear and corresponding components removed.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1 to 8, the present embodiment provides a high-efficiency underwater auxiliary propulsion apparatus for assisting a user who dives or swims underwater, which can help the user to more conveniently navigate underwater or perform swimming motions more efficiently. Wherein the auxiliary propulsion device comprises a buoy structure 10, a guide bar structure 20, a transmission 30, a propeller shaft package 40 and a propeller 50.

Buoy structure 10 is used to provide buoyancy to a user. In this embodiment, the buoyancy is no less than the total weight of buoy structure 10, guide bar structure 20, transmission 30, propeller shaft assembly 40, propeller 50, and the user. In this way, buoy structure 10 may provide sufficient buoyancy so that a user does not sink when using the device. In some embodiments, the amount of buoyancy generated by buoy structure 10 can be adjusted, with the amount of buoyancy being positively correlated to the weight of the user. That is, when the weight of the user is relatively large, the buoyancy generated by buoy structure 10 will be relatively large, and conversely relatively small, thus ensuring that the user can be located near the water surface or in a certain depth of water. Of course, in other embodiments, the buoyancy may be less than the total gravity, and the user may be assured that the swim or dive will not sink by the combination of his own buoyancy and the buoyancy of other structures in the device.

One end of guide bar structure 20 is connected to buoy structure 10. In this embodiment, buoy structure 10 is threadably connected to guide bar structure 20. The guide bar structure 20 is in the form of a bar which, together with the buoy structure 10, provides a forward guiding function for the device. The length of the guide rod structure 20 can be set according to actual needs, and can be a telescopic rod or a guide rod with a fixed length.

With continued reference to fig. 2-4, the transmission 30 includes two pedals 302 (pedal one 302-1 and pedal two 302-2, respectively), a housing 301, and an internal transmission. The other end of the guide bar arrangement 20 is connected to the housing 301 and two footrests 302 are rotatably mounted on opposite sides of the housing 301 on opposite sides of the central axis of the guide bar arrangement 20. The guide bar structure 20 is screw-coupled to the housing 301 so that it can be easily disassembled. The internal transmission mechanism is located in the housing 301, and includes a fixed bracket 303, two transmission gears 304 (respectively, a first transmission gear 304-1 and a second unidirectional bearing 3041-2), at least two unidirectional bearings 3041 (respectively, a first unidirectional bearing 3041-1 and a second unidirectional bearing 3041-2), two power gears 305 (respectively, a first power gear 305-1 and a second power gear 305-2), and a power shaft 308, and may further include two power bearings 3051, two threaded end caps 307, two gear connecting sleeves 3052, two nylon sleeves 306, and a coupler 310. The fixed bracket 303 is fixed in the housing 301 and has at least two pairs of opposite sides. The fixing bracket 303 of the present embodiment is a hollow square structure and is connected to the housing 301 by a screw. Two power gears 305 are coaxially disposed and rotatably mounted on a pair of opposite sides thereof and are respectively in transmission connection with the rotating ends of the two pedals 302. The fixed bracket 303 is provided with a central hole penetrating through the other pair of opposite side surfaces, and the power rotating shaft 308 is movably sleeved in the central hole. The two transmission gears 304, at least two one-way bearings 3041 and the power rotating shaft 308 are coaxially arranged, the two transmission gears 304 respectively correspond to the two one-way bearings 3041, and each transmission gear 304 is sleeved on the power rotating shaft 308 through the corresponding one-way bearing 3041. The two transmission gears 304 and the two power gears 305 are bevel gears, and the four bevel gears are arranged at four corners and are meshed with each other.

In the present embodiment, two power bearings 3051 correspond to the two power gears 305, respectively, and two threaded end caps 307 correspond to the two power bearings 3051, respectively. Two threaded shafts corresponding to the two power bearings 3051 are respectively arranged on two opposite side walls of the fixed support 303. Each power gear 305 is movably sleeved on a corresponding threaded shaft through a corresponding power bearing 3051. Each threaded end cap 307 is threaded onto a corresponding threaded shaft and retains the corresponding threaded shaft and the corresponding power bearing 3051. The two gear connecting sleeve shafts 3052 correspond to the two power gears 305, respectively, one end of each gear connecting sleeve shaft 3052 is coaxially arranged and fixedly connected with the corresponding power gear 305, and the other end of each gear connecting sleeve shaft 3052 is fixedly sleeved with the rotating end of the corresponding pedal 302. Two nylon sleeves 306 correspond to the two gear coupling sleeve shafts 3052, respectively, and each nylon sleeve 306 is journaled on the corresponding gear coupling sleeve shaft 3052 to enclose the housing 301. In addition, power shaft 308 is coupled to the inner drive shaft by coupling 310.

One end of the transmission shaft assembly 40 is fixed on the side wall of the housing 301 far away from the guide rod structure 20. The transmission shaft set 40 is provided with an inner transmission shaft inside, and one end of the inner transmission shaft is rotatably connected with the power rotating shaft 308. In this embodiment, the drive shaft assembly 40 is threadably connected to the housing 301, which facilitates assembly and disassembly of the two. Because the inner transmission shaft can rotate ceaselessly, the outside of the transmission shaft sleeve 40 can protect a user on one hand, and on the other hand, sundries can be prevented from entering to clamp the inner transmission shaft, so that smooth transmission is ensured.

The propeller 50 is fitted over the other end of the inner drive shaft and generates thrust to propel the user underwater when rotated. In the present embodiment, the inner drive shaft and the propeller 50 are fastened by bolts and rigidly connected. The propeller 50 operates in a similar principle to the propeller 50 in a ship, and generates water flow by rotation, and moves the entire apparatus by a relative action, thereby driving a user to advance or retreat together. The propellers 50 are at least one set, and in some embodiments may be two or more sets, depending on the thrust required. The number of the blades of the propeller 50 may be two, three, four or more. The radius of rotation of the propeller 50 must not be too large, which could easily cause injury to the user, could be entangled with debris, could touch other objects such as rocks or the like, or too small, which could result in insufficient power.

When a user steps on one of the two pedals 302, the rotation directions of the two power gears 305 are opposite, the rotation directions of the two transmission gears 304 are opposite, one-way bearing 3041 with the same locking direction of the two one-way bearings 3041 is locked to enable the power rotating shaft 308 to synchronously rotate along the same direction of one of the transmission gears 304 so as to drive the propeller 50 to rotate, and the other one-way bearing 3041 is not locked to enable the other one of the transmission gears 304 to oppositely rotate with the power rotating shaft 308.

To further illustrate the operation of the transmission 30, the principle is illustrated by the mechanical diagrams of fig. 5, 6 and 7. Fig. 5 is a schematic diagram of the transmission mechanism and part numbers. Referring to FIG. 4, when the user steps on the second pedal 302-2, the second power gear 305-2 rotates clockwise, as shown in FIG. 6. At this time, the motion of the second power gear 305-2 will drive the second transmission gear 304-2 to rotate counterclockwise and the first transmission gear 304-1 to rotate clockwise. The drive gears 304 are each provided with a one-way bearing 3041 inside. Because the one-way bearing is a bearing that can rotate freely in one direction of rotation and lock in the other direction. Therefore, the one-way bearing is arranged to be locked in the clockwise direction and rotate freely in the anticlockwise direction. When the transmission gear II 304-2 rotates anticlockwise and the transmission gear I304-1 rotates clockwise, the one-way bearing II 3041-2 rotates anticlockwise and has no acting force on the power rotating shaft 308, and the one-way bearing I3041-1 rotates clockwise and is locked relative to the power rotating shaft 308, so that the power rotating shaft 308 is driven to rotate clockwise. And the transmission gear I304-1 rotates clockwise and the transmission gear II 304-2 rotates anticlockwise to drive the power gear I305-1 to rotate anticlockwise, so that the pedal I302-1 rotates anticlockwise to prepare for pedaling by the other foot. When the user steps on the first pedal 302-1 with the other foot, the first power gear 305-1 rotates clockwise as shown in FIG. 7. At this time, the movement of the first power gear 305-1 drives the second transmission gear 304-2 to rotate counterclockwise and the first transmission gear 304-1 to rotate clockwise. When the first transmission gear 304-1 rotates counterclockwise and the second transmission gear 304-2 rotates clockwise, the first one-way bearing 3041-1 rotates counterclockwise without acting force on the power rotating shaft 308, and the second one-way bearing 3041-2 rotates clockwise and is locked relative to the power rotating shaft 308, so that the power rotating shaft 308 is driven to rotate clockwise. The first transmission gear 304-1 rotates anticlockwise, and the second transmission gear 304-2 rotates clockwise to drive the second power gear 305-2 to rotate anticlockwise, so that the second pedal 302-2 rotates anticlockwise to prepare for pedaling by the other foot, and the steps are repeated in a circulating manner. The whole process user is trampling in reciprocating type 'step on the spot', and the whole trampling process is all doing work, thereby greatly improving the motion efficiency, helping the user save physical power in the underwater navigation process, and improving the navigation speed.

To sum up, compare in current auxiliary propulsion equipment, the high-efficient underwater auxiliary propulsion equipment of this embodiment has following advantage:

1. according to the high-efficiency underwater auxiliary propulsion device, a user steps on one pedal 302, the pedal 302 drives the power gear 305 to rotate and further drives the two transmission gears 304 to rotate, and the rotation directions of the two transmission gears 304 are opposite, and the locking directions of the two one-way bearings 3041 are the same, so that one transmission gear 304 and the power rotating shaft 308 can realize transmission, and the other transmission gear 304 and the power rotating shaft 308 relatively rotate, so that the power rotating shaft 308 can rotate in one direction. Conversely, when the user steps on the other pedal 302, the previous transmission connection is interrupted, and the other transmission gear 304 drives the power shaft 308 to rotate in the same direction as before, so that the propeller 50 rotates in one direction under the drive of the inner transmission shaft and pushes the user to propel underwater. Because the two feet of the user trample in a reciprocating way, which is similar to the stepping in situ, the whole trampling process does work, thereby greatly improving the movement efficiency, helping the user save physical strength in the underwater navigation process and improving the navigation speed.

2. The efficient underwater auxiliary propulsion equipment adopts the novel one-way gear transmission device 30, and is different from the previous pedal 302 device in that an inertial rotating treading mode is required.

3. This high-efficient supplementary propulsion apparatus under water, it provides non-electrodynamic type's propulsion mode for the user, can prevent that electric equipment from producing the potential safety hazard under water on the one hand, and the security is high, and on the other hand need not to charge, and the cost is lower, easy maintenance moreover, facilitates the use.

Example 2

This embodiment provides a high efficiency underwater auxiliary propulsion device similar to that of embodiment 1 except for the difference in the transmission 30. The number of the transmission gear 304 is only one, and the two one-way bearings 3041 are installed at different positions. The transmission gear 304, the two one-way bearings 3041 and the power rotating shaft 308 are coaxially arranged, and the transmission gear 304 is sleeved on the power rotating shaft 308 through the two one-way bearings 3041. The transmission gear 304 and the two power gears 305 are both bevel gears, and the two power gears 305 are both meshed with the transmission gear 304. Moreover, when the user steps on one of the two pedals 302, the two power gears 305 rotate in opposite directions, the two one-way bearings 3041 lock in opposite directions, one of the one-way bearings 3041 locks to make the power shaft 308 rotate synchronously in the same direction as the transmission gear 304 to drive the propeller 50 to rotate, and the other one-way bearing 3041 does not lock. Thus, the present embodiment can also achieve the pushing action by the single transmission gear 304, simplifying the structure and reducing the manufacturing cost.

Example 3

This embodiment provides a high efficiency underwater auxiliary propulsion device similar to that of embodiment 1 except for the difference in the transmission 30. Wherein, the quantity of the pedals 302 and the power gear 305 is only one. The foothold 302 is rotatably mounted on one of the side walls of the housing 301 on one side of the central axis of the guide bar structure 20. The two transmission gears 304 and the power gear 305 are both bevel gears, and the two transmission gears 304 are both meshed with the power gear 305. When a user steps on the pedal 302, the two transmission gears 304 rotate in opposite directions, the two one-way bearings 3041 are locked in the same direction, one of the one-way bearings 3041 is locked to enable the power rotating shaft 308 to synchronously rotate in the same direction along with the transmission gears 304 to drive the propeller 50 to rotate, and the other one-way bearing 3041 is not locked to enable the other transmission gear 304 to oppositely rotate relative to the power rotating shaft 308. Thus, the present embodiment can also realize a pushing action by the single foot pedal 302 and the single power gear 305, simplifying the structure and reducing the manufacturing cost.

Example 4

This embodiment provides a stepped underwater propulsion system comprising an underwater suit and any of the efficient underwater auxiliary propulsion devices provided in embodiments 1-3. The underwater suit is worn by a user who dives or swims underwater, can be diving equipment of the user, and can also be a swimming suit of the user. Moreover, the suit can be matched with a corresponding matching structure and efficient underwater auxiliary propulsion equipment, and if the suit shoes are matched with the pedals 302, the suit shoes can be conveniently trampled by a user, and the suit shoes are prevented from being trampled in a hollow manner.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.