CN115364453A - Free treading swimming boosting device - Google Patents

Abstract

The free-treading swimming boosting device comprises two rotary bodies and a main shaft, wherein the rotary bodies and the main shaft are arranged between an upper rotary shell and a lower rotary shell, the main shaft is connected with two one-way bearings, outer rings of the two one-way bearings are respectively connected with the corresponding rotary bodies, and the upper end of the main shaft is rotatably connected in a bearing seat of the upper rotary shell; the terminal surface that two revolutions were kept away from each other is equipped with the mounting groove, be equipped with volute spring in the mounting groove, volute spring's one end is fixed in the mounting groove, the other end is connected respectively at last the casing of circling round and the inside bearing frame of the casing of circling round down, revolutions body circumference is equipped with the grooving, around being equipped with the stay cord on the grooving, the tank bottom at the grooving is fixed to stay cord one end, the stay cord other end extends to the outside through guiding mechanism, the main shaft lower extreme passes the casing of circling round down and even has accelerating mechanism, it has advancing mechanism even to revolve round casing one side under accelerating mechanism keeps away from. The freely treading swimming boosting device provided by the invention can generate thrust by treading any one single leg or double legs from any state, and the thrust is not influenced and limited mutually.

Description

Swimming boosting device capable of being treaded freely

Technical Field

The invention relates to the technical field of swimming equipment, in particular to a free-treading swimming boosting device.

Background

Swimming is sports that most people like, especially in the hot summer, if people can swim smoothly in a swimming pool or a river, the people can not only prevent heatstroke and lower the temperature, but also exercise the body, and simultaneously feel the pleasure brought by swimming.

Swimming and playing in water are interesting events for swimming enthusiasts, are sports which most people like, but are very physical consumptive, cannot keep up with physical strength for most people, and have the risk of drowning after staying in water for a long time.

Swimming needs a certain technology, is not common for general people, and can be performed by people without other tools. At present, the lifesaving tool is generally used, and the lifesaving tool is not only difficult to learn swimming, but also can not feel the real pleasure of swimming. Meanwhile, for people who can swim, in order to increase the swimming speed, auxiliary tools such as flippers or electric propellers are generally used, but the speed cannot be increased quickly by using the flippers, and the electric propellers are too expensive to bear by ordinary swimmers.

In contrast, the applicant has invented a pedal-type swimming boosting device with chinese application number CN202120600232.6, and by means of the device, manual power can be adopted, so that effects of physical exercise and swimming experience feeling improvement can be better achieved, the swimming advancing speed is improved, and meanwhile, the problem of endurance limitation does not exist; however, this device has a disadvantage in that since the chain is wound around the sprocket, one of the feet is in a straightened state while the other foot is necessarily in a bent state during the thrust generation, so that the user's legs and feet are restricted and the thrust generation cannot be maximized.

Disclosure of Invention

The invention aims to: the free-treading swimming boosting device is used for solving the problems in the background technology, so that in the process that any one single leg or two legs generate thrust from any state, the other leg or foot is not restricted by the state of the other leg or foot, and the thrust can be generated to the maximum extent, so that the experience effect is improved.

In order to realize the purpose, the following technical scheme is adopted: the free-stepping swimming boosting device comprises an upper convolution shell and a lower convolution shell which are arranged up and down, convolution bodies are symmetrically arranged up and down in a cavity formed between the upper convolution shell and the lower convolution shell, a main shaft is arranged in the cavity, two one-way bearings are sequentially connected to the shaft body of the main shaft up and down, outer rings of the two one-way bearings are respectively connected with the corresponding convolution bodies, and the upper end of the main shaft is rotatably connected in a bearing seat of the upper convolution shell;

the end surfaces of the two rotary bodies, which are far away from each other, are provided with mounting grooves, scroll springs are mounted in the mounting grooves, one ends of the scroll springs are fixed on the wall of the mounting grooves, and the other ends of the scroll springs are respectively connected to the bearing seat part of the upper rotary shell and the bearing seat part of the lower rotary shell;

rope grooves are formed in the circumferential direction of the two revolving bodies, pull ropes are wound on the rope grooves, one ends of the pull ropes are fixed to the bottoms of the rope grooves, guide mechanisms are arranged in the walls of the upper revolving shell and the lower revolving shell, and the other ends of the pull ropes extend to the outside through the guide mechanisms;

the lower end of the main shaft is rotatably connected to the lower rotary shell bearing seat and penetrates through the lower rotary shell bearing seat to be connected with an accelerating mechanism, and one side, far away from the lower rotary shell, of the accelerating mechanism is connected with a propelling mechanism.

Preferably, mechanism includes shell carrier and ring gear with higher speed, shell carrier lower terminal surface has the opening, the ring gear open end extends to the inside predetermined distance that has of shell carrier, the main shaft passes the casing of circling round down in proper order and shell carrier connection has the one-level planet carrier, the terminal surface is connected with a plurality of one-level planet wheels along circumference equipartition under the one-level planet carrier, and is a plurality of the one-level planet wheel outside respectively with the ring tooth meshing transmission that sets up on the ring gear, it is a plurality of the transmission of one-level planet wheel inside meshing has the secondary planet carrier, the terminal surface is connected with a plurality of secondary planet wheels along the circumferencial direction equipartition under the secondary planet carrier, and is a plurality of the secondary planet wheel outside respectively with the ring gear on the ring gear meshing transmission, it is a plurality of the transmission of secondary planet wheel inside meshing transmission has drive gear, the last transmission shaft that is connected with of drive gear, the transmission shaft upper end is rotated and is connected at secondary planet carrier lower extreme, the transmission shaft lower extreme passes the ring gear and extends to outside and is connected with the advancing mechanism upper end.

Preferably, the propulsion mechanism comprises a pressure cavity, a water inlet is formed in the lower end of the pressure cavity, a water outlet is formed in the side face of the pressure cavity, turbine blades are arranged in the pressure cavity, and the lower end of the transmission shaft extends into the pressure cavity and is connected with the turbine blades.

Preferably, be provided with the mount between pressure chamber inner wall and the turbine blade, the mount includes two parallel arrangement's solid fixed ring, two be connected with the grid blade between the solid fixed ring, the projection of grid blade in the solid fixed ring has predetermined angle with solid fixed ring's tangential direction, is provided with the skeleton on one of them solid fixed ring, skeleton inboard center department is equipped with the bearing frame and supports to rotate with turbine blade and be connected, gu fixed ring outer lane and pressure chamber water inlet threaded connection in the skeleton outside.

Preferably, a plurality of ball grooves are formed in the end faces, close to each other, of the two rotary bodies in the circumferential direction, connecting holes are formed in the rotary bodies, two ends of each connecting hole are communicated with the corresponding rope groove respectively, the middle point of each connecting hole is overlapped with the middle point of one of the ball grooves, and one end of the pull rope sequentially penetrates through the connecting holes and the corresponding ball grooves and is knotted at the end of the pull rope to be spherically placed in the corresponding ball groove to be fixedly connected.

Preferably, the guide mechanism comprises a guide opening arranged between the upper convolution shell and the lower convolution shell, a fixed rope block is arranged in the guide opening, guide grooves are formed in the upper end face and the lower end face of the fixed rope block, two guide wheels are respectively arranged on the guide grooves along the front direction and the rear direction, the other end of each pull rope penetrates through a guide hole formed between the two guide wheels arranged on the same guide groove and extends to the outside, one end of each guide wheel is rotatably connected with the fixed rope block through a pin, the other end of each guide wheel is rotatably connected with the upper convolution shell and the lower convolution shell through a pin, and the fixed rope block is fixedly connected with the upper convolution shell and the lower convolution shell through a pin.

Preferably, still include the water conservancy diversion awl, be hollow structure and have body and bottle lid in the water conservancy diversion awl, the water conservancy diversion awl sets up in the outlet opposite side, all be provided with the rib on the casing that circles round down, casing support and pressure chamber and the close lateral wall of water conservancy diversion awl, be provided with the dovetail that matches with the rib on the water conservancy diversion awl, the one end of dovetail is equipped with the locking tongue, and the other end is equipped with the shutoff head.

Preferably, the connecting device further comprises a plurality of connecting components arranged on the circumference of the upper convoluted shell, the connecting components are in a locking state under the stress state in a preset direction, and the connecting components can rotate by a preset angle and are assembled and disassembled in an inserting mode when external force is not applied; the connecting assemblies are fixedly worn on the swimmer through the connection of the binding bands; after the swimmer is worn and fixed, the free-treading swimming boosting device is required to be positioned between the abdomen and the front waist of the swimmer.

Preferably, coupling assembling includes that inserting groove and grafting collude, inserting groove circumference sets up on the casing of circling round at last, the inserting groove opening is kept away from and is revolved body one side setting, inserting groove has sectorial structure, inserting groove notch one side is provided with the stopper, grafting colludes the tank bottom that one end extends to inserting groove, inserting groove's tank bottom is the cylinder type, the fitting surface that grafting colluded is the same cylinder type, and grafting colludes can rotate predetermined angle at inserting groove fit, the other end that grafting colluded is located the inserting groove outside, grafting colludes and is provided with the spacing groove, grafting colludes and realizes the dismouting through the grafting mode under being in initial condition, grafting colludes spacing groove and stopper cooperation when rotating predetermined angle and realize the locking.

Preferably, the insertion hook positioned outside the insertion groove is symmetrically provided with K-shaped blocks in the front and back directions, one end of each K-shaped block is in a suspended state, and the K-shaped blocks enable the insertion hook to be in a locked or detachable state under the action of external force in a preset direction.

The invention has the following beneficial effects:

compared with the prior art, the free-treading swimming boosting device has the advantages that in the process that any one single leg or both legs of a user tread from any state to generate thrust, the other leg or foot is not restricted by the state of the user, and the thrust can be generated to the maximum extent as required, so that the swimming experience effect is improved; and compared with the prior art, the device can also be well suitable for the situation that the disabled has a single foot, and is different from the situation that two legs and feet are required to cooperate together to generate thrust in the prior art.

Drawings

Fig. 1 is a schematic structural view of a front section of a freely treading swimming boosting device.

FIG. 2 is a schematic view of the rear axle side structure of the free-treading swimming assist device of the present invention.

Fig. 3 is a schematic structural view of the front axle side of the free-pedaling swimming boosting device of the invention.

Fig. 4 is a schematic structural view of an upper convolution shell of the free-stepping swimming booster of the invention.

Fig. 5 is a schematic structural diagram of a revolving body of the free-treading swimming boosting device.

Fig. 6 is a schematic structural view of the other side of the revolution body of the free-treading swimming boosting device of the invention.

Fig. 7 is a schematic structural view of a shell support of the free-pedaling swimming boosting device of the invention.

Fig. 8 is a schematic structural view of a spiral spring of the free-pedaling swimming boosting device of the invention.

FIG. 9 is a schematic view of the internal structure of the accelerating mechanism of the free-pedaling swimming booster of the present invention.

Fig. 10 is a schematic structural view of a fixing frame of the free-pedaling swimming boosting device of the invention.

FIG. 11 is a schematic view of the turbine blade structure of the free-pedaling swimming booster of the present invention.

Fig. 12 is a schematic structural view of the guide mechanism of the free-pedaling swimming boosting device of the invention.

FIG. 13 is a schematic view of the connecting assembly of the free-pedaling swimming aid of the present invention.

Fig. 14 is a schematic structural view of a deflector cone of the free-treading swimming booster of the invention.

Fig. 15 is a schematic structural view of a gear ring of the free-pedaling swimming boosting device of the invention.

Fig. 16 is a schematic structural view of a main shaft of the free-pedaling swimming boosting device of the invention.

In the figure, 1-upper rotary shell, 2-lower rotary shell, 3-rotary body, 4-main shaft, 5-one-way bearing, 6-installation groove, 61-bayonet, 7-volute spring, 71-convex ring, 72-convex part, 8-rope groove, 9-pull rope, 10-shell support, 11-gear ring, 12-primary planet carrier, 13-primary planet wheel, 14-secondary planet carrier, 15-secondary planet wheel, 16-transmission gear, 17-transmission shaft, 18-pressure cavity, 19-water inlet, 20-water outlet, 21-turbine blade, 22-fixed frame, 221-fixed ring, 222-grid blade, 223-framework, 23-ball groove, 24-connection hole, 25-fixed rope block, 26-guide groove, 27-guide wheel, 28-guide cone, 29-ridge, 30-dovetail groove, 31-insertion groove, 32-insertion groove, 33-limit block, 34-limit groove and 35-K type block.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to the attached drawings 1-16, the swimming boosting device capable of being stepped freely comprises an upper rotary shell 1 and a lower rotary shell 2 which are arranged up and down, rotary bodies 3 are symmetrically arranged in a cavity formed between the upper rotary shell 1 and the lower rotary shell 2 up and down, a main shaft 4 is arranged in the cavity, two one-way bearings 5 are sequentially connected to the upper part and the lower part of a shaft body of the main shaft 4, namely the main shaft 4 is connected with inner rings of the one-way bearings 5 through keys and key slots, wherein the type of the one-way bearings 5 is 'CSK 17PP belt grooves 17 x 40 x 12', namely the one-way bearings 5 have the characteristic that the outer rings can drive the inner rings to rotate forward (assuming forward rotation at this time), the outer rings cannot drive the inner rings to rotate when the outer rings rotate backward, the outer rings cannot drive the outer rings to rotate when the inner rings to rotate forward, the outer rings of the two one-way bearings 5 are respectively connected with the corresponding rotary bodies 3, and the upper end of the main shaft 4 is rotatably connected in a bearing seat of the upper shell 1 through a bearing;

an installation groove 6 is formed in the end face, far away from each other, of each of the two rotary bodies 3, a scroll spring 7 is installed in each installation groove 6, one end of each scroll spring 7 is fixed to the groove wall of each installation groove 6, specifically, bayonets 61 are evenly formed in the circumference of the groove wall of each installation groove 6, one end of each scroll spring 7 is bent to be provided with a U-shaped cross section and is clamped on any two adjacent bayonets 61 to be fixed, and the other end of each scroll spring 7 is connected to the bearing seat portion of the upper rotary shell 1 and the bearing seat portion of the lower rotary shell 2 respectively; specifically, the end faces, close to each other, of the bearing seat portion of the upper swing shell 1 and the bearing seat portion of the lower swing shell 2 are cut into a convex ring 71 and a convex portion 72, the outer ring of the convex ring 71 and the outer ring of the convex portion 72 are concentric, the inner ring of the convex ring 71 is tangent to a notch, at this time, the other end of the volute spring 7 can be clamped between the convex ring 71 and the convex portion 72 and is connected and fixed through a fixing pin or a screw, the two swing bodies 3 are circumferentially provided with a rope groove 8, a pull rope 9 is wound on the rope groove 8, one end of the pull rope 9 is fixed at the bottom of the rope groove 8, specifically, the end faces, close to the two swing bodies 3, of the plurality of ball grooves 23 are circumferentially provided with a connecting hole 24, two ends of the connecting hole 24 are respectively communicated with the rope groove 8, the midpoint of the connecting hole 24 is coincident with the midpoint of one of the ball grooves 23, one end of the pull rope 9 sequentially passes through the connecting hole 24 and the ball groove 23 and is placed in a knotted shape in the ball groove 23 to be connected and fixed, and the winding directions of the two pull ropes 9 are kept consistent; the shell walls of the upper convolution shell 1 and the lower convolution shell 2 are internally provided with a guide mechanism, the other ends of the two pull ropes 9 extend to the outside through the guide mechanism and are respectively connected with legs and feet of a user, the connection mode is the prior art, and the description is omitted, the lower end of the main shaft 4 penetrates through the lower convolution shell 2 and is connected with an accelerating mechanism, one side of the accelerating mechanism, which is far away from the lower convolution shell 2, is connected with a propelling mechanism, in the specific use process, the pull ropes 9 are outwards tensioned by treading of the user, the pull ropes 9 drive the convolution body 3 to rotate, and the inner ring of the one-way bearing 5 is driven to rotate as the center of the convolution body 3 is connected with the outer ring of the one-way bearing 5, so that the inner ring of the one-way bearing 5 drives the main shaft 4 to rotate, and the accelerating mechanism and the propelling mechanism are driven by the main shaft 4 to generate thrust; when the treading process is finished, under the condition that the pull rope 9 positioned outside is not tensioned by external force, the volute spring 7 enables the revolution body 3 to be restored to the initial state due to the rebound effect of the volute spring 7, so that the pull rope 9 positioned outside is led into the inner part and wound in the rope groove 8, preparation is made for pulling the pull rope 9 next time, the revolution body 3 rotates reversely in the process, due to the fact that the one-way bearing 5 is arranged, the revolution body 3 drives the outer ring of the one-way bearing 5 to rotate reversely, the outer ring of the one-way bearing 5 cannot drive the inner ring of the one-way bearing 5 to rotate reversely, and the main shaft 4 is in an inertia state and cannot rotate, so that the propelling mechanism can only generate forward thrust and cannot generate reverse thrust, and in the process that any one single leg or double legs of a user treads to generate the thrust from any state, the other leg is not restricted by the state of the other leg, and can generate the thrust according to the maximum extent, so that the swimming experience effect is improved; moreover, the device can be well suitable for the condition that the disabled person has single leg and foot, and is different from the condition that two legs and feet need to cooperate together to generate thrust in the prior art, thereby improving the swimming experience effect of the user.

In this embodiment, as a preferred embodiment of the above embodiments, in order to improve the transmission effect, the acceleration mechanism includes a housing support 10 and a gear ring 11, a lower end surface of the housing support 10 has an opening, an opening end of the gear ring 11 extends into the housing support 10 with a predetermined distance, the main shaft 4 sequentially passes through the lower revolving housing 2 and the housing support 10 to be connected with a first-stage planet carrier 12, a plurality of first-stage planet gears 13 are uniformly and circumferentially connected to a lower end surface of the first-stage planet carrier 12, the outer portions of the plurality of first-stage planet gears 13 are respectively in meshing transmission with ring teeth arranged on the gear ring 11, a second-stage planet carrier 14 is in meshing transmission with the inner portions of the plurality of first-stage planet gears 13, a plurality of second-stage planet gears 15 are uniformly and circumferentially connected to a lower end surface of the second-stage planet carrier 14, the outer portions of the plurality of second-stage planet gears 15 are respectively in meshing transmission with ring teeth arranged on the gear ring gear 11, a transmission gear 16 is connected to a transmission shaft 17, the upper end of the transmission shaft 17 is rotatably connected to the lower end of the second-stage planet carrier 14 through the gear 11, and connected to the upper end of the propulsion mechanism; the accelerating mechanism is set to be in a second stage, and can be increased or decreased according to needs, and the optimal transmission ratio can be obtained by setting the accelerating mechanism so as to obtain larger thrust; in order to improve the stable operation effect of the acceleration mechanism, bearings are arranged on the end surfaces, close to each other, of the shell support 10 and the primary planet carrier 12 and the end surfaces, close to each other, of the primary planet carrier 12 and the secondary planet carrier 14; in the transmission process, the lower end of the main shaft 4 drives the first-stage planet carrier 12 to rotate, the first-stage planet carrier 12 enables the first-stage planet gear 13 to rotate and revolve, the first-stage planet gear 13 drives the second-stage planet carrier 14 to rotate, so that the second-stage planet gear 15 rotates and revolves, the first-stage planet gear 13 and the second-stage planet gear 15 are both in meshing transmission with the ring gear arranged on the fixed gear ring 11, so that the second-stage planet gear 15 drives the transmission gear 16 to rotate, and the transmission shaft 17 is connected with the transmission gear 16, so that the output end of the transmission shaft 17 drives the propelling mechanism to operate, namely, the turbine blade 21 is driven to rotate to generate forward thrust.

In the present embodiment, as a preferred embodiment of the above embodiments, the propelling mechanism includes a pressure chamber 18, a water inlet 19 is provided at the lower end of the pressure chamber 18, a water outlet 20 is provided at the side of the pressure chamber 18, a turbine blade 21 is provided in the pressure chamber 18, and the lower end of the transmission shaft 17 extends into the pressure chamber 18 and is connected with the turbine blade 21.

Specifically, in order to ensure the stability of the propulsion mechanism, a fixing frame 22 is arranged between the inner wall of the pressure chamber 18 and the turbine blade 21, the fixing frame 22 comprises two fixing rings 221 which are arranged in parallel, grid blades 222 are connected between the two fixing rings 221, the projection of the grid blades 222 in the ring surfaces of the fixing rings 221 and the tangential direction of the fixing rings 221 form a preset angle, so that water at the water outlet 20 is drained out of the water outlet 20, the drainage effect is achieved under the combined action of the pressure chamber 18, the grid blades 222 and the preset angle, a framework 223 is arranged on one fixing ring 221, a bearing seat is arranged at the center of the inner side of the framework 223 and is abutted against and rotatably connected with the turbine blade 21, the outer ring of the fixing ring 221 at the outer side of the framework 223 is in threaded connection with the water inlet 19 of the pressure chamber 18, and the fixing frame 22 is convenient to fix.

In this implementation, in order to improve the guiding effect of the pulling rope 9, the pulling rope 9 is made to be more stable in the pulling or contracting process, the guiding mechanism includes a guiding opening arranged between the upper revolving casing 1 and the lower revolving casing 2, a fixed rope block 25 is arranged in the guiding opening, the upper end face and the lower end face of the fixed rope block 25 are provided with guide grooves 26, the two guide grooves 26 are respectively provided with two guide wheels 27 along the front-back direction, the other end of each pulling rope 9 penetrates through a guide hole formed between the two guide wheels 27 arranged on the same guide groove 26 and extends to the outside, one end of each guide wheel 27 is rotatably connected with the fixed rope block 25 through a pin, the other end of each guide wheel 27 is rotatably connected with the upper revolving casing 1 and the lower revolving casing 2 through a pin, and the fixed rope block 25 is fixedly connected with the upper revolving casing 1 and the lower revolving casing 2 through a pin.

The water bottle further comprises a diversion cone 28, the diversion cone 28 is of a hollow structure and is provided with a bottle body and a bottle cap, the diversion cone 28 is arranged on the opposite side of the water outlet 20, the side walls of the lower convolution shell 2, the shell support 10 and the pressure cavity 18, which are close to the diversion cone 28, are provided with ribs 29, a dovetail groove 30 matched with the ribs 29 is arranged on the diversion cone 28, one end of the dovetail groove is provided with a locking tongue, the other end of the dovetail groove is provided with a sealing head, one end of the diversion cone 28, which is far away from the upper convolution shell 1, is in a pointed cone shape, and the bottle cap is arranged at the pointed cone.

In order to fix the equipment on a user body and achieve the effect of facilitating disassembly and assembly, the device further comprises a plurality of connecting assemblies arranged on the circumference of the upper convolution shell 1, wherein each connecting assembly is in a locking state under a stress state in a preset direction, and can rotate for a preset angle when external force is not applied to each connecting assembly and realize disassembly and assembly in an inserting mode; the connecting assemblies are fixedly worn on the swimmer through the connection of the binding bands; after the swimmer is worn and fixed, the free-treading swimming boosting device is required to be positioned between the abdomen and the front waist of the swimmer.

Specifically, the connecting assembly comprises an insertion groove 31 and an insertion hook 32, the insertion groove 31 is circumferentially arranged on the upper rotary shell 1, an opening of the insertion groove 31 is arranged on one side away from the rotary body 3, the insertion groove 31 is of a fan-shaped structure and facilitates rotation of the insertion hook 32, a limiting block 33 is arranged on one side of a notch of the insertion groove 31, one end of the insertion hook 32 extends to the bottom of the insertion groove 31, the bottom of the insertion groove is of a cylindrical shape, matching surfaces of the insertion hooks are of the same cylindrical shape, the insertion hooks can rotate in the insertion groove in a matching mode at a preset angle, the other end of the insertion hook 32 is located outside the insertion groove 31, a limiting groove 34 is arranged on the insertion hook 32, the insertion hook 32 is assembled and disassembled in an initial state in a plugging mode, the limiting groove 34 and the limiting block 33 are matched to achieve locking when the insertion hook 32 rotates to the preset angle, and the connecting assembly can be arranged at a required position according to a stress direction; the stress directions of the two symmetrical connecting assemblies are located in the upper surface direction of the upper convolution shell 1, the stress direction of the other connecting assembly, namely the connecting assembly adjacent to the guide cone 28, is located in the direction of the guide cone 28, the direction faces the head direction of a user, and the connecting assembly is connected with the connecting assemblies in modes of a bridle and the like.

In order to distinguish whether the plug-in hook is in a locked or pluggable state, the plug-in hook 32 positioned outside the plug-in groove 31 is symmetrically provided with K-shaped blocks 35 from front to back, one end of each K-shaped block 35 is in a suspended state, and the K-shaped blocks 35 enable the plug-in hook 32 to distinguish whether the plug-in hook 32 is in a locked or detachable state under the action of external force in a preset direction.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims (10)

1. Freely step on swimming boosting device, including the last casing (1) of circling round that sets up from top to bottom and the casing (2) of circling round down, its characterized in that: the rotary body (3) is symmetrically arranged in a cavity formed between the upper rotary shell (1) and the lower rotary shell (2) from top to bottom, a main shaft (4) is arranged in the cavity, two one-way bearings (5) are sequentially connected to the upper portion and the lower portion of the shaft body of the main shaft (4), the outer rings of the two one-way bearings (5) are respectively connected with the corresponding rotary body (3), and the upper end of the main shaft (4) is rotatably connected into a bearing seat of the upper rotary shell (1);

an installation groove (6) is formed in the end face, far away from each other, of each of the two rotary bodies (3), a scroll spring (7) is installed in each installation groove (6), one end of each scroll spring (7) is fixed to the groove wall of each installation groove (6), and the other end of each scroll spring (7) is connected to the bearing seat portion of the upper rotary shell (1) and the bearing seat portion of the lower rotary shell (2) respectively;

rope grooves (8) are formed in the circumferential direction of the two revolving bodies (3), pull ropes (9) are wound on the rope grooves (8), one ends of the pull ropes (9) are fixed to the bottoms of the rope grooves (8), guide mechanisms are arranged in the wall of each of the upper revolving shell (1) and the lower revolving shell (2), and the other ends of the pull ropes (9) extend to the outside through the guide mechanisms;

the lower end of the main shaft (4) is rotatably connected to a bearing seat of the lower convolution shell (2) and penetrates through the bearing seat of the lower convolution shell (2) to be connected with an accelerating mechanism, and one side, far away from the lower convolution shell (2), of the accelerating mechanism is connected with a propelling mechanism.

2. The free-pedaling swimming boosting device according to claim 1, wherein: the mechanism includes casing support (10) and ring gear (11) with higher speed, casing support (10) lower extreme face has the opening, ring gear (11) open end extends to casing support (10) inside and has the predetermined distance, main shaft (4) pass down in proper order and revolve round casing (2) and casing support (10) and be connected with one-level planet carrier (12), terminal surface is connected with a plurality of one-level planet wheel (13) along the circumference equipartition under one-level planet carrier (12), and is a plurality of one-level planet wheel (13) outside respectively with ring gear meshing transmission that sets up on ring gear (11), a plurality of the inside meshing transmission of one-level planet wheel (13) has second grade planet carrier (14), terminal surface is connected with a plurality of second grade planet wheel (15) along the circumference equipartition under second grade planet carrier (14), and is a plurality of the outside of second grade planet wheel (15) respectively with the ring gear meshing transmission that sets up on ring gear (11), a plurality of the inside meshing transmission of second grade planet wheel (15) has drive gear (16), be connected with transmission shaft (17) on drive gear (16), rotation connection is at second grade planet carrier (17) lower extreme and outside propulsion mechanism.

3. The free-pedaling swimming boosting device according to claim 2, wherein: the propulsion mechanism comprises a pressure cavity (18), a water inlet (19) is formed in the lower end of the pressure cavity (18), a water outlet (20) is formed in the side face of the pressure cavity (18), turbine blades (21) are arranged in the pressure cavity (18), and the lower end of the transmission shaft (17) extends into the pressure cavity (18) and is connected with the turbine blades (21).

4. The free-pedaling swim boosting device according to claim 3, wherein: be provided with between pressure chamber (18) inner wall and the turbine blade (21) mount (22), mount (22) include two parallel arrangement's solid fixed ring (221), two be connected with grid blade (222) between solid fixed ring (221), the projection of grid blade (222) in solid fixed ring (221) ring face has predetermined angle with the tangential direction of solid fixed ring (221), is provided with skeleton (223) on one of them solid fixed ring (221), skeleton (223) inboard center department is equipped with the bearing frame and leans on to rotate with turbine blade (21) and is connected, gu fixed ring (221) outer lane and pressure chamber (18) water inlet (19) threaded connection in the skeleton (223) outside.

5. The free-pedaling swim boosting device according to claim 1, wherein: the end faces, close to each other, of the two rotary bodies (3) are provided with a plurality of ball head grooves (23) in the circumferential direction, connecting holes (24) are formed in the rotary bodies (3), two ends of each connecting hole (24) are communicated with the rope grooves (8) respectively, the middle point of each connecting hole (24) is overlapped with the middle point of one ball head groove (23), one end of the pull rope (9) sequentially penetrates through the connecting holes (24) and the ball head grooves (23) and is knotted at the end of the pull rope (9) to be in a spherical shape and then is placed in the ball head grooves (23) to be connected and fixed.

6. The free-pedaling swimming boosting device according to claim 1, wherein: the guiding mechanism comprises a guiding opening arranged between an upper convolution shell (1) and a lower convolution shell (2), a fixed rope block (25) is arranged in the guiding opening, guide grooves (26) are formed in the upper end face and the lower end face of the fixed rope block (25), two guide grooves (26) are respectively provided with two guide wheels (27) in the front-back direction, the other end of each pulling rope (9) penetrates through a guide hole formed between the two guide wheels (27) arranged on the same guide groove (26) and extends to the outside, one end of each guide wheel (27) is rotatably connected with the fixed rope block (25) through a pin, the other end of each guide wheel (27) is rotatably connected with the upper convolution shell (1) and the lower convolution shell (2) through pins, and the fixed rope block (25) is fixedly connected with the upper convolution shell (1) and the lower convolution shell (2) through pins.

7. The free-pedaling swimming boosting device according to claim 3, wherein: still include water conservancy diversion awl (28), be hollow structure and have body and bottle lid in water conservancy diversion awl (28), water conservancy diversion awl (28) set up in outlet (20) opposite side, all be provided with rib (29) on the lateral wall that casing (2), casing support (10) and pressure chamber (18) of circling round down are close with water conservancy diversion awl (28), be provided with dovetail (30) with rib (29) matching on water conservancy diversion awl (28), the one end of dovetail (30) is equipped with the locking tongue, and the other end is equipped with the shutoff head.

8. The free-pedaling swimming boosting device according to any one of claims 1-7, wherein: the connecting assembly is in a locking state in a stress state in a preset direction, and the connecting assembly can rotate by a preset angle when not subjected to external force and can be disassembled and assembled in an inserting mode.

9. The free-pedaling swimming boosting device according to claim 8, wherein: the connecting assembly comprises an insertion groove (31) and an insertion hook (32), wherein the insertion groove (31) is circumferentially arranged on the upper rotating shell (1), an opening of the insertion groove (31) is far away from one side of the rotating body (3), the insertion groove (31) is of a fan-shaped structure, a limiting block (33) is arranged on one side of a notch of the insertion groove (31), one end of the insertion hook (32) extends to the bottom of the insertion groove (31), the bottom of the insertion groove (31) is of a cylindrical shape, matching surfaces of the insertion hook (32) are of the same cylindrical shape, the insertion hook (32) can rotate at a preset angle in the insertion groove (31) in a matched mode, the other end of the insertion hook (32) is located outside the insertion groove (31), a limiting groove (34) is arranged on the insertion hook (32), the insertion hook (32) is in an initial state and is assembled and disassembled in a matched mode, and locked by the limiting block (33) when the insertion hook (32) rotates to the preset angle.

10. The free-pedaling swim boosting device according to claim 9, wherein: the inserting hook (32) positioned outside the inserting groove (31) is symmetrically provided with K-shaped blocks (35) from front to back, one end of each K-shaped block (35) is in a suspended state, and the K-shaped blocks (35) enable the inserting hook (32) to be in a locking or detachable state under the action of external force in a preset direction.

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