CN220391506U - Propeller and electric hydrofoil surfing board - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of propellers, and discloses a propeller and an electric hydrofoil surfing board. Through the setting of first seal structure and second seal structure for the pivot has double-deck seal structure with the department that runs through of air current vortex cover, effectively improves the leakproofness, reduces the water infiltration risk.

Description

Propeller and electric hydrofoil surfing board

Technical Field

The embodiment of the utility model relates to the technical field of propellers, in particular to a propeller and an electric hydrofoil surfing board.

Background

An electric hydrofoil surfing board is surfing equipment, combines electric power and hydrofoil technology, and can drive a surfer to slide on the water surface at high speed through electric driving and hydrodynamic principles. Wherein the propeller is the drive system of an electric hydrofoil surfboard.

The utility model provides an electric hydrofoil surfboard's propeller, the major structure is including duct, air current vortex cover, casing, rotor subassembly and helical blade etc. wherein, and the air current vortex cover is fixed in the duct, and air current vortex cover and casing sealing connection, rotor subassembly set up in the casing, and rotor subassembly's pivot runs through the air current vortex cover and is connected with the helical blade who sets up in the duct. In the traditional propeller, the rotating shaft penetrates through the penetrating part of the air-front flow disturbing cover, and is generally only provided with a single-layer sealing structure, for example, a sealing ring or sealant is arranged, so that the sealing performance of the penetrating part of the rotating shaft penetrating through the air-front flow disturbing cover is poor, and the risk of water penetration is high.

Disclosure of Invention

The technical problem to be solved by the embodiment of the utility model is to provide the propeller, which can improve the sealing performance and reduce the risk of water penetration.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a propeller, including the duct, the air current vortex cover, a housing, seal assembly, actuating mechanism and screw, the air current vortex cover is fixed in the duct, the air current vortex cover is equipped with the passageway that runs through inside, the casing is equipped with first opening and cavity, first opening and cavity intercommunication, the one end and the casing sealing connection of air current vortex cover, passageway and first opening intercommunication, seal assembly includes first seal and second seal, first seal and second seal interval set up in the passageway, first seal and second seal are equipped with first opening and second opening respectively, actuating mechanism includes pivot and actuating assembly, actuating assembly sets up in the cavity, the one end of pivot runs through first opening, the passageway, first opening and second opening, the other end and the actuating assembly drive of pivot are connected, the lateral wall and the lateral wall butt of first opening of one end of pivot form first seal structure, the lateral wall and the lateral wall butt of second opening of one end of pivot form second seal structure, the screw sets up in the one end of pivot.

Optionally, the seal assembly further includes a third seal member, the third seal member is provided with a third port, the third seal member is arranged in the channel, the third seal member is arranged at intervals with the second seal member, one end of the rotating shaft penetrates through the third port, a first seal cavity is formed between the first seal member and the second seal member, a second seal cavity is formed between the second seal member and the third seal member, and the first seal cavity and the second seal cavity are both used for filling hydrolysis-resistant waterproof grease so as to form a third seal structure.

Optionally, the first sealing member is a sliding bearing, the sliding bearing is inserted into one end of the channel away from the first opening, the first blocking member is fixed on the end face of one end of the channel away from the first opening, one side of the first blocking member is abutted to the fixed sliding bearing, one end of the rotating shaft penetrates through the sliding bearing, and a fluid blocking effect is generated between the side wall of one end of the rotating shaft and the inner wall of the sliding bearing so as to form a first sealing structure.

Optionally, the device further comprises a second blocking piece, the second sealing piece is a framework oil seal, the framework oil seal is fixed in the channel, a clamping groove is formed in the channel, the second blocking piece is clamped in the clamping groove, one side of the second blocking piece is abutted to the fixed framework oil seal, one end of the rotating shaft penetrates through the framework oil seal, and a contact sealing effect is generated between the side wall of one end of the rotating shaft and the inner wall of the framework oil seal to form a second sealing structure.

Optionally, the air conditioner further comprises a first elastic sealing ring, wherein a first annular groove is formed in one end, close to the first opening, of the air conditioner cover, the first sealing ring is arranged in the first annular groove, and the first sealing ring is used for elastically sealing the periphery of the first opening after one end of the air conditioner cover is connected with the shell.

Optionally, the drive assembly includes a stator, a rotor yoke, a first rotor end plate, a second rotor end plate, and a magnet, the stator is fixed in the cavity, the rotor yoke is inserted in the stator, one end of the rotor yoke is connected with the first rotor end plate, the other end of the rotor yoke is connected with the second rotor end plate, the magnet is arranged between the stator and the rotor yoke, and the other end of the rotating shaft penetrates through the first rotor end plate, the rotor yoke and the second rotor end plate.

Optionally, a hollowed-out area is arranged inside the rotor yoke, and the hollowed-out area is positioned between the outer wall of the other end of the rotating shaft and the inner wall of the rotor yoke.

Optionally, the first rotor end plate is provided with a plurality of first lightening holes, and the plurality of first lightening holes are arranged at one end of the first rotor end plate facing the rotor yoke.

Optionally, the second rotor end plate is provided with a plurality of second lightening holes, and the plurality of second lightening holes are arranged at one end of the second rotor end plate facing the rotor yoke.

In order to solve the technical problems, another technical scheme adopted by the embodiment of the utility model is as follows: an electric hydrofoil surfboard is provided, comprising the propeller.

The embodiment of the utility model has the beneficial effects that: different from the condition of the prior art, the embodiment of the utility model comprises a duct, an air-flow-disturbing cover, a shell, a sealing assembly, a driving mechanism and a propeller, wherein the air-flow-disturbing cover is fixed in the duct, the air-flow-disturbing cover is provided with a channel penetrating through the inside, the shell is provided with a first opening and a cavity, the first opening is communicated with the cavity, one end of the air-flow-disturbing cover is in sealing connection with the shell, the channel is communicated with the first opening, the sealing assembly comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are arranged in the channel at intervals, the first sealing element and the second sealing element are respectively provided with a first through hole and a second through hole, the driving mechanism comprises a rotating shaft and a driving assembly, the driving assembly is arranged in the cavity, one end of the rotating shaft penetrates through the first opening, the channel, the first through hole and the second through hole, the other end of the rotating shaft is in driving connection with the driving assembly, the side wall of one end of the rotating shaft is in butt joint with the side wall of the first through hole to form a first sealing structure, the side wall of one end of the rotating shaft is in butt joint with the side wall of the second through hole to form a second sealing structure, and the propeller is arranged at one end of the rotating shaft. Through the setting of first seal structure and second seal structure, can make pivot and the department of running through of air dam cover have double-deck seal structure, effectively improve the leakproofness, reduce the risk that water permeated into the casing inside from the department of running through of pivot and air dam cover.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of a propeller according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of the overall structure of a propeller according to the second embodiment of the present utility model;

FIG. 3 is an exploded view of the overall structure of a propeller provided by an embodiment of the present utility model;

fig. 4 is a partial enlarged view of a portion a in fig. 2;

fig. 5 is a partial enlarged view of the portion B in fig. 2;

FIG. 6 is a schematic view of an air dam and seal assembly of a propeller according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram II of an air dam and seal assembly of a propeller according to an embodiment of the present utility model;

FIG. 8 is a schematic structural view of an air dam of a propeller according to an embodiment of the present utility model;

fig. 9 is a schematic structural view of a driving mechanism of a propeller according to an embodiment of the present utility model;

fig. 10 is a schematic structural diagram II of a driving mechanism of a propeller according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a drive assembly of a propeller according to an embodiment of the present utility model;

fig. 12 is a schematic structural view of a rear cover assembly of a propeller according to an embodiment of the present utility model.

In the figure: 1 duct, 2 front spoiler, 21 channel, 211 clamping groove, 212 first limit step face, 213 second limit step face, 22 first annular groove, 3 housing, 31 first opening, 32 cavity, 321 first cavity, 322 second cavity, 33 second opening, 4 seal assembly, 41 first seal, 42 second seal, 43 third seal, 44 first seal cavity, 45 second seal cavity, 46 first stopper, 47 second stopper, 5 driving mechanism, 51 spindle, 52 driving assembly, 521 stator, 522 rotor yoke, 5221 hollowed out area, 5222 positioning groove, 523 first rotor end plate, 5231 first lightening hole, 524 second rotor end plate, 5241 second lightening hole, 525 magnet, 6 propeller, 7 nut, 8 first seal ring, 9 rear cover assembly, 91 end cover, 911 second annular groove, 912 injection hole, 92 first rolling bearing, 93 waterproof connector, 94 second seal ring, 95 fourth seal.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a propeller includes a duct 1, an air-vortex cover 2, a housing 3, a sealing assembly 4, a driving mechanism 5 and a propeller 6, wherein the air-vortex cover 2 is fixed in the duct 1, the air-vortex cover 2 is provided with a channel 21 penetrating the interior, the housing 3 is provided with a first opening 31 and a cavity 32, the first opening 31 is communicated with the cavity 32, one end of the air-vortex cover 2 is in sealing connection with the housing 3, the channel 21 is communicated with the first opening 31, the sealing assembly 4 includes a first sealing element 41 and a second sealing element 42, the first sealing element 41 and the second sealing element 42 are arranged in the channel 21 at intervals, the first sealing member 41 and the second sealing member 42 are respectively provided with a first through hole and a second through hole, the driving mechanism 5 comprises a rotating shaft 51 and a driving assembly 52, the driving assembly 52 is arranged in the cavity 32, one end of the rotating shaft 51 penetrates through the first opening 31, the channel 21, the first through hole and the second through hole, the other end of the rotating shaft 51 is in driving connection with the driving assembly 52, the side wall of one end of the rotating shaft 51 is in butt joint with the side wall of the first through hole to form a first sealing structure, the side wall of one end of the rotating shaft 51 is in butt joint with the side wall of the second through hole to form a second sealing structure, and the propeller 6 is arranged at one end of the rotating shaft 51. Through the arrangement of the first sealing structure and the second sealing structure, the penetrating part of the rotating shaft 51 and the air-guide flow disturbing cover 2 is provided with double sealing, so that the sealing performance is effectively improved, the risk of water penetration is reduced, and the performance and the service life of the driving assembly 52 are prevented from being influenced.

In some embodiments, referring to fig. 1 to 3, for the structure of the propeller, the following is specific: the duct 1 is circular pipeline form, its cross section is circular, the air-flow front cover 2 is circular column, its cross section also is circular, the side of air-flow front cover 2 is equipped with a plurality of connecting portions, a plurality of connecting portions encircle the side of air-flow front cover 2 and are circumference interval distribution, a plurality of connecting portions all realize threaded connection with duct 1 through the screw, and then realize being fixed in duct 1 with air-flow front cover 2, casing 3 is circular pipeline form, the one end of air-flow front cover 2 is acceptd in duct 1, the other end and the casing 3 sealing connection of air-flow front cover 2, and then cover the first opening 31 of casing 3, screw 6 is equipped with perforation and pin groove, the pin groove is offered in the lateral wall of perforation, the one end of pivot 51 is equipped with the pin, after the one end of pivot 51 runs through first opening 31, passageway 21, first opening and second opening, the one end of pivot 51 runs through the perforation of screw 6, and the pin groove joint of one end of pivot 51 and screw 6, and then make pivot 51 produce axial positioning constraint and radial positioning constraint to screw 6, thereby make screw 6 follow screw 6 and nut 6 and the synchronous nut that is equipped with in the screw nut 7 and the screw nut 7 of screw-nut 7 and the screw-nut 6 are not need to be equipped with in the direction of the screw nut 7 in the course of the screw nut 6, and the end of screw nut 7 is not to be equipped with in the screw nut 7 in the course, and the screw nut 7 is the end of the screw nut 7 is the screw nut is further to be equipped with in the screw nut 7 and the screw nut 7. It should be noted that, in other embodiments, the propeller 6 and the rotating shaft 51 may be connected by a D-hole, so as to achieve synchronous rotation of the propeller 6 and the rotating shaft 51.

In some embodiments, referring to fig. 1 to 3, the air dam 2 is integrally formed, so that the assembling difficulty of the propeller can be reduced, and in addition, the structural strength of the air dam 2 can be enhanced by the integrally formed design, so that the air dam 2 can be better carried, and meanwhile, the number of integral parts of the propeller can be effectively reduced.

In some embodiments, referring to fig. 1 to 3, the shape of the housing 3 is a circular tube, the driving component 52 is disposed in the middle of the housing 3, when one end of the housing 3 close to the first opening 31 is in sealing connection with the air-flow guiding cover 2, the driving component 52 is disposed in the middle of the housing 3, so that the cavity 32 is separated into a first cavity 321 and a second cavity 322 by the driving component 52, in addition, a liquid injection hole is disposed at one end of the housing 3 far away from the air-flow guiding cover 2, the liquid injection hole is communicated with the second cavity 322, the second cavity 322 is communicated with the first cavity 321, high heat-conducting oil is injected through the liquid injection hole, so that the first cavity 321 and the second cavity 322 can be filled with high heat-conducting oil, and heat generated by the driving component 52 can be quickly conducted to the housing 3 through the high heat-conducting oil, thereby radiating heat through the housing 3 to improve the heat radiating efficiency and ensure long-term stable operation of the driving component 52.

In some embodiments, referring to fig. 1, 2 and 12, the propeller further includes a rear cover assembly 9, the housing 3 is further provided with a second opening 33 and one end far from the first opening 31, the rear cover assembly 9 includes an end cover 91, a first rolling bearing 92, a waterproof connector 93, a second sealing ring 94 and a fourth sealing member 95, referring to fig. 5, the end cover 91 is provided with a second annular groove 911, the end cover 91 is sleeved at one end of the housing 3 near the second opening 33, the second sealing ring 94 is disposed in the second annular groove 911, the second sealing ring 94 elastically presses the inner wall of the second groove and the periphery of the second opening 33, so as to realize sealing, the first rolling bearing 92 is sleeved at one end of the end cover 91 facing the second opening 33, the other end of the rotating shaft 51 penetrates the first rolling bearing 92, the waterproof connector 93 is disposed at one end far from the second opening 33, the waterproof connector 93 is used for passing through a power cable, so as to realize electrical connection of the driving assembly 52, the liquid injection hole 912 is opened at one end far from the second opening 33 of the end cover 91, and the fourth sealing member 95 is used for sealing the liquid injection hole 912.

Further, referring to fig. 1 to 3, the sealing assembly 4 further includes a third sealing member 43, the third sealing member 43 is provided with a third port, the third sealing member 43 is disposed in the channel 21, the third sealing member 43 is spaced from the second sealing member 42, one end of the rotating shaft 51 penetrates through the third port, a first sealing chamber 44 is formed between the first sealing member 41 and the second sealing member 42, a second sealing chamber 45 is formed between the second sealing member 42 and the third sealing member 43, and the first sealing chamber 44 and the second sealing chamber 45 are both used for filling hydrolysis-resistant waterproof grease to form a third sealing structure. The hydrolysis-resistant waterproof grease includes one or more of polyurethane-based hydrolysis-resistant waterproof grease, polyether-based hydrolysis-resistant waterproof grease, silicone grease, and lithium-based hydrolysis-resistant waterproof grease, and is not limited herein.

In some embodiments, referring to fig. 6 and 7, the first sealing member 41 is a sliding bearing, the propeller further includes a first blocking member 46, the sliding bearing is inserted into one end of the channel 21 away from the first opening 31, the first blocking member 46 is fixed on an end surface of the channel 21 away from the one end of the first opening 31, one side of the first blocking member 46 abuts against the fixed sliding bearing, so as to fix the sliding bearing, thereby preventing the sliding bearing from axial displacement or loosening due to high temperature, one end of the rotating shaft 51 penetrates through the sliding bearing, and a side wall of one end of the rotating shaft 51 and an inner wall of the sliding bearing generate a fluid blocking effect, so as to form a first sealing structure. Further, the sliding bearing plays a role of reinforcing support for the rotation shaft 51.

In some embodiments, referring to fig. 6 and 7, the second seal member 42 is a skeleton oil seal, the propeller further includes a second blocking member 47, the skeleton oil seal is fixed in the channel 21, a clamping groove 211 and a first limiting step surface 212 are disposed in the channel 21, the second blocking member 47 is clamped in the clamping groove 211, one side of the second blocking member 47 abuts against the fixed skeleton oil seal, one side of the skeleton oil seal, which faces away from the second blocking member 47, abuts against the first limiting step surface 212, so as to realize the fixed skeleton oil seal, thereby preventing the skeleton oil seal from generating axial displacement due to high temperature, one end of the rotating shaft 51 penetrates through the skeleton oil seal, and a contact sealing effect is generated between the side wall of one end of the rotating shaft 51 and the inner wall of the skeleton oil seal, so as to form a second sealing structure.

In some embodiments, referring to fig. 6 and 7, the third sealing member 43 is a second rolling bearing, a second limiting step surface 213 is further disposed in the channel 21, one end of the second rolling bearing abuts against the second limiting step surface 213, and the other end of the second rolling bearing abuts against one end of the driving component 52, so as to fix the second rolling bearing.

Through the mode, the propeller provided by the embodiment of the utility model has triple sealing arrangement, comprises the first sealing structure, the second sealing structure and the third sealing structure, and can effectively improve the sealing performance of the penetrating part of the air-front vortex cover 2 and the rotating shaft 51, thereby effectively reducing the risk of water penetration.

Further, referring to fig. 4, 6 and 7, the air conditioner further includes a resilient first sealing ring 8, wherein a first annular groove 22 is disposed at an end of the air conditioner cover 2 near the first opening 31, the first sealing ring 8 is disposed in the first annular groove 22, and the first sealing ring 8 is used for resiliently sealing a periphery of the first opening 31 after the one end of the air conditioner cover 2 is connected with the housing 3.

In some embodiments, a through hole is formed at one end of the housing 3 near the first opening 31, a threaded hole is formed at one end of the housing 3 near the first opening 31, when one end of the housing 3 near the first opening 31 is sleeved at one end of the air-flow guiding cover 2 near the first opening 31, the through hole corresponds to the threaded hole, and the through hole is in threaded connection with the threaded hole through a screw, so that the inner wall of the elastic first sealing ring 8 elastic extrusion groove and the inner wall of one end of the housing 3 near the first opening 31 can be driven to realize elastic sealing.

In some embodiments, in order to improve the tightness between the end of the air dam 2 near the first opening 31 and the end of the housing 3 near the first opening 31, the number of the first annular grooves 22 and the number of the first sealing rings 8 are multiple, the first annular grooves 22 are arranged at intervals along the axial direction of the air dam 2, and the first sealing rings 8 are arranged in the first annular grooves 22 in a one-to-one correspondence manner, so that the tightness between the end of the air dam 2 near the first opening 31 and the end of the housing 3 near the first opening 31 can be further improved.

Further, referring to fig. 9 to 11, the driving unit 52 includes a stator 521, a rotor yoke 522, a first rotor end plate 523, a second rotor end plate 524, and a magnet 525, the stator 521 is fixed in the cavity 32, the rotor yoke 522 is inserted into the stator 521, one end of the rotor yoke 522 is connected to the first rotor end plate 523, the other end of the rotor yoke 522 is connected to the second rotor end plate 524, the magnet 525 is disposed between the stator 521 and the rotor yoke 522, and the other end of the rotating shaft 51 penetrates through the first rotor end plate 523, the rotor yoke 522, and the second rotor end plate 524.

In some embodiments, referring to fig. 10 and 11, the stator 521 and the rotor yoke 522 are both circular and tubular, when the rotor yoke 522 is inserted into the stator 521, a gap is formed between the outer wall of the rotor yoke 522 and the inside of the stator 521, the number of magnets 525 is plural, and the plurality of magnets 525 are uniformly disposed around the gap.

In some embodiments, referring to fig. 11, a plurality of positioning slots 5222 are circumferentially arranged on the surface of the rotor yoke 522, a plurality of magnets 525 are correspondingly arranged, and the plurality of magnets 525 are correspondingly arranged on the surface of the rotor yoke 522 and are correspondingly arranged on the surface of the rotor yoke 522, so that the magnets 525 are quickly positioned and installed in the manner, and the assembly difficulty is reduced.

In some embodiments, referring to fig. 11, the magnet 525 is a segmented magnet 525, and by adopting the above manner, the phenomenon that the length of the magnet 525 is too long due to the integrated magnet 525 can be avoided, so that the processing difficulty of the magnet 525 is reduced.

In some embodiments, the surface of the rotating shaft 51 is provided with a fastening hole, the first rotor end plate 523 and the second rotor end plate 524 are respectively provided with a perforation corresponding to the fastening hole, and the fastening screw correspondingly passes through the perforation and is in threaded connection with the fastening hole, so that the fixing of the rotating shaft 51 with the first rotor end plate 523 and the second rotor end plate 524 is realized, and the connection reliability of the rotating shaft 51 with the first rotor end plate 523 and the second rotor end plate 524 is further enhanced.

Further, referring to fig. 9, a hollowed area 5221 is provided inside the rotor yoke 522, and the hollowed area 5221 is located between the outer wall of the other end of the rotating shaft 51 and the inner wall of the rotor yoke 522.

In some embodiments, the rotor yoke 522 is circular and tubular, and thus the hollowed-out area 5221 is circular and annular, so that the weight of the rotor yoke 522, and thus the driving assembly 52, can be effectively reduced, the inertia of the rotor yoke 522 is reduced, the control precision is improved, and stable sliding of the propeller is facilitated.

Further, in order to further reduce the weight of the driving assembly 52, referring to fig. 9 and 11, the first rotor end plate 523 is provided with a plurality of first lightening holes 5231, and the plurality of first lightening holes 5231 are disposed at an end of the first rotor end plate 523 facing the rotor yoke 522.

In some embodiments, referring to fig. 9, the first rotor end plate 523 is circular in shape, and the plurality of first lightening holes 5231 are distributed in a circumferential array at one end of the first rotor end plate 523 facing the rotor yoke 522.

Further, to further reduce the weight of the driving assembly 52, referring to fig. 9, the second rotor end plate 524 is provided with a plurality of second lightening holes 5241, and the plurality of second lightening holes 5241 are disposed at an end of the second rotor end plate 524 facing the rotor yoke 522.

In some embodiments, referring to fig. 9, the second rotor end plate 524 is circular, and the plurality of second lightening holes 5241 are distributed in a circumferential array at one end of the second rotor end plate 524 facing the rotor yoke 522.

The embodiment of the utility model comprises a duct 1, an air-flow-disturbing cover 2, a shell 3, a sealing component 4, a driving mechanism 5 and a propeller 6, wherein the air-flow-disturbing cover 2 is fixed in the duct 1, the air-flow-disturbing cover 2 is provided with a channel 21 penetrating the inside, the shell 3 is provided with a first opening 31 and a cavity 32, the first opening 31 is communicated with the cavity 32, one end of the air-flow-disturbing cover 2 is in sealing connection with the shell 3, the channel 21 is communicated with the first opening 31, the sealing component 4 comprises a first sealing element 41 and a second sealing element 42, the first sealing element 41 and the second sealing element 42 are arranged on the channel 21 at intervals, the first sealing member 41 and the second sealing member 42 are respectively provided with a first through hole and a second through hole, the driving mechanism 5 comprises a rotating shaft 51 and a driving assembly 52, the driving assembly 52 is arranged in the cavity 32, one end of the rotating shaft 51 penetrates through the first opening 31, the channel 21, the first through hole and the second through hole, the other end of the rotating shaft 51 is in driving connection with the driving assembly 52, the side wall of one end of the rotating shaft 51 is in butt joint with the side wall of the first through hole to form a first sealing structure, the side wall of one end of the rotating shaft 51 is in butt joint with the side wall of the second through hole to form a second sealing structure, and the propeller 6 is arranged at one end of the rotating shaft 51. Through the setting of first seal structure and second seal structure, can make pivot 51 and the penetration department of air dam 2 have double-deck seal structure, effectively improve the leakproofness, reduce the risk that water permeated into inside casing 3 from the penetration department of pivot 51 and air dam 2.

The present utility model further provides an embodiment of an electric hydrofoil surfing board, wherein the electric hydrofoil surfing board comprises the propeller, and the specific structure and the function of the propeller can be referred to the embodiment, and the detailed description is omitted herein.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A propeller, comprising:

a duct;

the air-flow guide cover is fixed in the duct and is provided with a channel penetrating through the inside;

the air conditioner comprises a shell, a front spoiler cover, a rear spoiler cover, a front spoiler cover and a rear spoiler cover, wherein the shell is provided with a first opening and a cavity, the first opening is communicated with the cavity, one end of the front spoiler cover is connected with the shell in a sealing way, and the channel is communicated with the first opening;

the sealing assembly comprises a first sealing piece and a second sealing piece, the first sealing piece and the second sealing piece are arranged in the channel at intervals, and the first sealing piece and the second sealing piece are respectively provided with a first through hole and a second through hole;

the driving mechanism comprises a rotating shaft and a driving assembly, wherein the driving assembly is arranged in the cavity, one end of the rotating shaft penetrates through the first opening, the channel, the first through hole and the second through hole, the other end of the rotating shaft is in driving connection with the driving assembly, the side wall of one end of the rotating shaft is in butt joint with the side wall of the first through hole to form a first sealing structure, and the side wall of one end of the rotating shaft is in butt joint with the side wall of the second through hole to form a second sealing structure;

the screw is arranged at one end of the rotating shaft.

2. The propeller as claimed in claim 1, wherein,

the sealing assembly further comprises a third sealing element, the third sealing element is provided with a third port, the third sealing element is arranged in the channel, the third sealing element and the second sealing element are arranged at intervals, one end of the rotating shaft penetrates through the third port, a first sealing cavity is formed between the first sealing element and the second sealing element, a second sealing cavity is formed between the second sealing element and the third sealing element, and the first sealing cavity and the second sealing cavity are both used for being filled with hydrolysis-resistant waterproof grease so as to form a third sealing structure.

3. The propeller as claimed in claim 2, wherein,

the sealing structure comprises a first sealing piece, and is characterized by further comprising a sliding bearing, wherein the sliding bearing is inserted into one end of the channel away from the first opening, the first sealing piece is fixed on the end face of the channel away from the first opening, one side of the first sealing piece is abutted to and fixed with the sliding bearing, one end of the rotating shaft penetrates through the sliding bearing, and the side wall of one end of the rotating shaft and the inner wall of the sliding bearing generate a fluid blocking effect so as to form a first sealing structure.

4. The propeller as claimed in claim 2, wherein,

the sealing structure comprises a channel, and is characterized by further comprising a second blocking piece, wherein the second sealing piece is a framework oil seal, the framework oil seal is fixed in the channel, a clamping groove is formed in the channel, the second blocking piece is clamped in the clamping groove, one side of the second blocking piece is abutted to be fixed with the framework oil seal, one end of a rotating shaft penetrates through the framework oil seal, and a contact sealing effect is generated between the side wall of one end of the rotating shaft and the inner wall of the framework oil seal so as to form a second sealing structure.

5. The propeller as claimed in claim 1, wherein,

the air-cooled air conditioner further comprises a first elastic sealing ring, wherein a first annular groove is formed in one end, close to the first opening, of the air-cooled air conditioner cover, the first sealing ring is arranged in the first annular groove and is used for elastically sealing the periphery of the first opening after one end of the air-cooled air conditioner cover is connected with the shell.

6. The propeller as claimed in claim 1, wherein,

the drive assembly includes stator, rotor yoke, first rotor end plate, second rotor end plate and magnet, the stator is fixed in the cavity, the rotor yoke peg graft in the stator, the one end of rotor yoke with first rotor end plate is connected, the other end of rotor yoke with the second rotor end plate is connected, magnet set up in the stator with between the rotor yoke, the other end of pivot runs through first rotor end plate, rotor yoke and second rotor end plate.

7. The propeller of claim 6, wherein the propeller is configured to move,

the rotor yoke is internally provided with a hollowed-out area, and the hollowed-out area is positioned between the outer wall of the other end of the rotating shaft and the inner wall of the rotor yoke.

8. The propeller of claim 6, wherein the propeller is configured to move,

the first rotor end plate is provided with a plurality of first lightening holes, and the first lightening holes are formed in one end of the first rotor end plate, which faces the rotor yoke.

9. The propeller of claim 6, wherein the propeller is configured to move,

the second rotor end plate is provided with a plurality of second lightening holes, and the second lightening holes are formed in one end of the second rotor end plate, which faces the rotor yoke.

10. An electric hydrofoil surfboard comprising a propeller as claimed in any one of claims 1-9.