CN115614398A - Flexible connection structure for connecting outer rotor motor and driven shaft and waterwheel - Google Patents

Abstract

The invention relates to a flexible connection structure for connecting an outer rotor motor and a driven shaft, which comprises the outer rotor motor and the driven shaft, wherein the outer rotor motor and the driven shaft are connected by a flexible connecting piece which allows the axial displacement and the radial displacement of a connection part. The invention has the beneficial effects that: the outer rotor motor is connected with the driven shaft through the flexible connecting piece which allows the connecting part to generate axial displacement and radial displacement, so that the vibration generated when the outer rotor motor works is prevented from being transmitted to the driven shaft, the abrasion of the driven shaft can be reduced, the driven shaft is prevented from being bent or broken, and the service life of the driven shaft is prolonged.

Description

Flexible connection structure for connecting outer rotor motor and driven shaft and waterwheel

The application is as follows: 202010163255.5, patent name: the utility model provides a flexible connection structure and waterwheel of connecting external rotor electric machine and driven shaft, application date: divisional application on 03/10/2020

Technical Field

The invention relates to the field of mechanical transmission, in particular to a flexible connection structure for connecting an outer rotor motor and a driven shaft and a waterwheel.

Background

The single-side output shaft outer rotor motor is widely applied due to simple structure, large output torque, low manufacturing cost, thin axial thickness and light weight.

However, when the outer rotor motor with a shaft protruding from one side works, the outer rotor motor is easy to shake, if one end of the outer rotor motor without the motor shaft is directly and rigidly connected with the driven shaft of the driven device through connecting pieces such as connecting flanges, the shaking of the outer rotor motor during working can increase the abrasion speed of the driven shaft, and even bend or break the driven shaft. Therefore, a flexible connecting piece is needed to flexibly connect the outer rotor motor with the driven shaft.

Disclosure of Invention

The invention aims to overcome the problems in the prior art, provides a flexible connection structure for connecting an outer rotor motor and a driven shaft, and also provides a waterwheel.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises the outer rotor motor and the cylindrical driven shaft, wherein the outer rotor motor and the driven shaft are connected through a flexible connecting piece allowing the axial displacement and the radial displacement of a connection part.

Preferably, the flexible connector comprises a large gear and a small gear which are meshed with each other, the full tooth height of the small gear is smaller than that of the large gear, the groove width of the small gear is smaller than that of the large gear, the small gear is fixedly installed at the center of one end of a motor shaft of the outer rotor motor, a shaft hole formed in the center of the large gear is sleeved on the middle or the end of the driven shaft, and the number of teeth of the small gear is smaller than that of the large gear.

Preferably, the flexible connecting piece comprises a first bevel gear and a second bevel gear which are meshed with each other, the first bevel gear is fixedly arranged at the center of one end of the motor shaft of the outer rotor motor, the second bevel gear is sleeved at the middle part or the end part of the driven shaft, and the number of teeth of the first bevel gear is less than that of the second bevel gear.

Preferably, the flexible connecting element comprises a first gear, a second gear and a pair of chains which are simultaneously meshed with the first gear and the second gear, the first gear is fixedly arranged at the center of one end of the motor shaft without the outer rotor motor, a shaft hole arranged at the center of the second gear is sleeved at the middle part or the end part of the driven shaft, and the number of teeth of the first gear is less than that of the second gear.

Preferably, the flexible connection member includes a first universal connection bridge and a second universal connection bridge that are matched with each other, the centers of the first universal connection bridge and the second universal connection bridge are respectively provided with a circular shaft hole along the axial direction thereof, one end of each of the first universal connection bridge and the second universal connection bridge is at least provided with two sector blocks that are arranged according to an annular array, a sector groove is formed between two adjacent sector blocks at the end of each of the first universal connection bridge and the second universal connection bridge, a central angle corresponding to the sector groove is larger than a central angle corresponding to the sector block, the sector block at the end of the first universal connection bridge is inserted into the sector groove at the end of the second universal connection bridge, a gap for mutual displacement is formed between the sector blocks of the first universal connection bridge and the second universal connection bridge that are matched with each other, and the first universal connection bridge is sleeved at the tail end of the driven shaft.

Preferably, an annular snap ring is arranged at one end of the motor shaft of the outer rotor motor, and the second universal connecting bridge is fixedly installed in the snap ring.

Preferably, the flexible connector comprises a large gear and a small gear which are meshed with each other, the full tooth height of the small gear is smaller than that of the large gear, the groove width of the small gear is smaller than that of the large gear, the small gear is fixedly installed at the center of one end of a motor shaft of the outer rotor motor, a connecting round rod is fixedly sleeved in a shaft hole formed in the center of the large gear, a second universal connecting bridge is assembled at one end or two ends of the connecting round rod in an interference mode, and the number of teeth of the small gear is smaller than that of the large gear.

Preferably, the flexible connecting piece comprises a first bevel gear and a second bevel gear which are meshed with each other, the first bevel gear is fixedly installed in the center of one end of a motor shaft of the outer rotor motor, a connecting round rod is fixedly sleeved in a shaft hole formed in the center of the second bevel gear, a second universal connecting bridge is assembled at one end or two ends of the connecting round rod in an interference mode, and the number of teeth of the first bevel gear is less than that of the second bevel gear.

Preferably, the flexible connecting piece comprises a first gear, a second gear and a pair of chains which are meshed with the first gear and the second gear simultaneously, the first gear is fixedly installed at the center of one end of a motor shaft of the outer rotor motor, a connecting round rod is fixedly sleeved in a shaft hole arranged at the center of the second gear, a second universal connecting bridge is assembled at one end or two ends of the connecting round rod in an interference fit mode, and the number of teeth of the first gear is less than that of the teeth of the second gear.

Preferably, the flexible connecting piece comprises a shaft sleeve, a large bearing, a small bearing and a supporting shaft, wherein the outer ring of the large bearing is fixedly installed in the shaft sleeve, the outer ring of the small bearing is sleeved in the large bearing, one end of the supporting shaft is inserted into the small bearing, the other end of the supporting shaft is inserted into a clamping ring arranged at the center of one end, without the motor shaft of the outer rotor motor, of the shaft sleeve, one end of the shaft sleeve is provided with a plurality of clamping grooves arranged according to an annular array, the clamping grooves are clamped with a plurality of protruding ribs arranged according to the annular array, arranged at one end, without the motor shaft of the outer rotor motor, of the supporting shaft, the circumferential width of each protruding rib is smaller than the circumferential width of each clamping groove, and a shaft hole in the center of the other end of the shaft sleeve is sleeved at the tail end of the driven shaft or is connected with a shaft hole in the center of the second universal connecting bridge through a connecting round rod.

Preferably, the flexible connecting piece comprises a flange plate with a shaft hole in the center, one end of the motor shaft of the outer rotor motor is provided with a plurality of screw holes distributed according to an annular array, round holes are formed in positions, corresponding to the screw holes in the outer rotor motor, of the flange plate, the round holes in the flange plate are connected with the screw holes in the outer rotor motor in series through bolts, the diameter of each round hole is larger than the outer diameter of the screw rod part of each bolt, and the shaft hole in the center of the flange plate is sleeved at the tail end of the driven shaft or connected with the shaft hole in the center of the second universal connecting bridge in series through a connecting round rod.

Preferably, the flexible connecting piece comprises a cylindrical clamping jaw with a shaft hole in the center, one end of the cylindrical clamping jaw is provided with a plurality of clamping grooves arranged according to an annular array, one end of the motor shaft of the outer rotor motor is provided with a plurality of protruding ribs arranged according to the annular array, the circumferential width of the protruding ribs is smaller than that of the clamping grooves, the cylindrical clamping jaw is matched with the protruding ribs on the end face of the outer rotor motor, and the shaft hole in the center of the cylindrical clamping jaw is sleeved at the tail end of the driven shaft or is connected with the shaft hole in the center of the second universal connecting bridge in series through a connecting round rod.

Preferably, the flexible connecting piece comprises a chuck with a shaft hole in the center, the chuck is provided with a plurality of pin holes distributed according to an annular array, one end of the motor shaft of the outer rotor motor is provided with a plurality of screw holes distributed according to the annular array, each screw hole is in threaded connection with a pin block, the pin block is inserted into the corresponding pin hole on the chuck, a gap exists between any surface of the pin block and the inner wall of the pin hole, and the shaft hole in the center of the chuck is sleeved at the tail end of the driven shaft or is connected with the shaft hole in the center of the second universal connecting bridge in series through a connecting round rod.

Preferably, the flexible connecting piece comprises an outer gear and an inner gear, the center of the outer gear is provided with a shaft hole, the inner gear is positioned outside the outer gear and meshed with the outer gear, the radius of the addendum circle of the outer gear is smaller than that of the tooth socket circle of the inner gear, one end of the outer rotor motor shaft is provided with a plurality of screw holes which are distributed according to an annular array, the inner gear is fixedly installed on the outer rotor motor in a mode that the screw holes in the inner gear and the screw holes in the outer rotor motor are connected in series through bolts, and the shaft hole in the center of the outer gear is sleeved at the tail end of a driven shaft or connected with the shaft hole in the center of the second universal connecting bridge in series through a connecting round rod.

Preferably, the flexible connecting piece comprises a universal joint, one end of the motor shaft of the outer rotor motor is provided with a circular snap ring, one end of the universal joint is fixedly installed in the snap ring, and the other end of the universal joint is sleeved at the tail end of the driven shaft or is connected with a shaft hole in the center of the second universal connecting bridge in series through a connecting round rod.

Preferably, the flexible connecting piece comprises a polygon prism, a shaft sleeve and an annular fixture block, wherein one end of the shaft sleeve is provided with a polygon prism-shaped inner hole, the other end of the shaft sleeve is provided with a shaft hole, the cross section shape of the polygon prism is the same as that of the inner hole, but the cross section area of the polygon prism is smaller than that of the inner hole, the center of the annular fixture block is provided with a regular polygon hole with the same shape and size as that of the polygon prism, the annular fixture block is fixedly installed in a fixture ring arranged at the center of the non-shaft end of the external rotor motor, one end of the polygon prism is inserted into the regular polygon hole of the annular fixture block, the other end of the polygon prism is inserted into the inner hole of the shaft sleeve, and the shaft hole of the shaft sleeve is fixedly sleeved at the tail end of the driven shaft or is connected with the shaft hole at the center of the second universal connecting bridge in series through a connecting round rod.

The waterwheel comprises an outer rotor motor, flexible connecting pieces, a driven shaft, impellers, floating plates, a frame, shaft supporting seats, bearing seats and an outer rotor motor driver, wherein the number of the floating plates is two, the floating plates are respectively and fixedly installed at the bottoms of two ends of the frame, a motor shaft of the outer rotor motor is fixedly installed in the shaft supporting seats on a motor platform positioned on one side or the middle part of the frame, two ends of the driven shaft are respectively and rotatably installed in the two parallel bearing seats positioned on the frame, the impellers are fixedly sleeved on the driven shaft, the driven shaft is connected with one end, without the motor shaft, of the outer rotor motor through the flexible connecting pieces, the outer rotor motor driver is fixedly installed on the frame beside the outer rotor motor, and the outer rotor motor driver is connected with the outer rotor motor through a conducting wire.

Preferably, the connecting round rod of the flexible connecting piece is rotatably arranged in a bearing seat fixed on the motor platform.

The beneficial effects of the invention are: the outer rotor motor is connected with the driven shaft through the flexible connecting piece which allows the connecting part to generate axial displacement and radial displacement, so that the shaking of the outer rotor motor during working is prevented from being transmitted to the driven shaft, the abrasion of the driven shaft can be reduced, the driven shaft is prevented from being bent or broken, and the service life of the driven shaft is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

fig. 1 is a schematic structural view of an outer rotor motor according to the present invention;

FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 3 is a schematic structural view of a second embodiment of the present invention;

FIG. 4 is a schematic structural view of a third embodiment of the present invention;

FIG. 5 is a schematic structural view of a fourth embodiment of the present invention;

FIG. 6 is a schematic structural view of a fifth embodiment of the present invention;

FIG. 7 is a schematic structural view of a sixth embodiment of the present invention;

FIG. 8 is a schematic view of a first universal connecting bridge and a second universal connecting bridge according to the present invention;

FIG. 9 is a schematic view of a second universal connecting bridge according to the present invention;

FIG. 10 is a schematic structural view of a seventh embodiment of the present invention;

FIG. 11 is a schematic structural view of an eighth embodiment of the present invention;

FIG. 12 is an assembly view of the ninth embodiment of the present invention;

FIG. 13 is a schematic structural view of a tenth embodiment of the present invention;

FIG. 14 is a schematic structural view of an eleventh embodiment of the present invention;

FIG. 15 is a schematic structural view of a twelfth embodiment of the present invention;

FIG. 16 is a schematic structural view of a thirteenth embodiment of the present invention;

FIG. 17 is a schematic structural view of a fourteenth embodiment of the present invention;

FIG. 18 is an exploded view of a fourteenth embodiment of the invention;

FIG. 19 is a schematic diagram of a sixteen embodiment of the present invention;

FIG. 20 is a schematic view of the construction of a sixteen flange plate according to an embodiment of the present invention;

FIG. 21 is a schematic structural view of a seventeenth embodiment of the present invention;

FIG. 22 is a schematic view showing a connection structure between a flange and a second universal connecting bridge in a seventeenth embodiment of the invention;

FIG. 23 is a schematic structural view of an eighteenth embodiment of the present invention;

fig. 24 is a schematic structural view of a cylindrical jaw in eighteen embodiments of the invention;

FIG. 25 is a schematic structural view of a nineteenth embodiment of the present invention;

fig. 26 is a schematic view of a connecting structure of a cylindrical dog and a second universal connecting bridge in nineteen embodiment of the invention;

fig. 27 is a schematic structural view of an embodiment twenty of the present invention;

FIG. 28 is a schematic structural diagram of twenty one in an embodiment of the present invention;

FIG. 29 is a schematic structural view of an embodiment twenty-two in the invention;

FIG. 30 is a schematic structural view of an embodiment twenty-three in the invention;

FIG. 31 is a schematic structural view of an embodiment twenty-four in the invention;

FIG. 32 is a schematic diagram of a twenty-fifth configuration of an embodiment of the invention;

FIG. 33 is a schematic structural diagram of a twenty-sixth embodiment of the invention;

FIG. 34 is an exploded view of a twenty-six ring-shaped cartridge, a hexagonal prism, and a bushing according to an embodiment of the present invention;

FIG. 35 is a schematic structural diagram of twenty-seventh embodiment of the invention;

fig. 36 is a schematic structural view of the waterwheel of the present invention.

The reference numbers in the figures illustrate: the flexible connection member 100, the outer rotor motor 110, the snap ring 111, the protruding rib 112, the screw hole 113, the driven shaft 120, the impeller 130, the floating plate 140, the frame 150, the motor table 151, the shaft support base 160, the bearing base 170, the outer rotor motor driver 180, the first universal connection bridge 1901, the second universal connection bridge 1902, the shaft hole 191, the sector block 192, the sector groove 193, the gap 194, the flange 200, the shaft hole 201, the circular hole 202, the bolt 203, the cylindrical jaw 300, the snap groove 301, the chuck 410, the pin hole 411, the pin block 420, the outer gear 510, the inner gear 520, the universal joint 600, the large gear 710, the pinion gear 720, the first bevel gear 810, the second bevel gear 820, the hexagonal prism support shaft 910, the shaft sleeve 920, the inner hole 921, the annular snap block 930, the regular hexagonal hole 931, the first gear 1010, the second gear, the chain 1030, the connecting round rod 1020, the shaft sleeve 1210, the snap groove 1211, the large bearing, the small bearing 1230, 1240.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and fig. 2, in the first embodiment: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a large gear 710 and a small gear 720 which are engaged with each other, wherein the full tooth height of the small gear 720 is smaller than that of the large gear 710, the groove width of the small gear 720 is smaller than that of the large gear 710, the small gear 720 is fixedly arranged in a snap ring 111 at the center of one end of the motor shaft of the outer rotor motor 110 through a circular truncated cone arranged at one end of the small gear 720, a shaft hole arranged at the center of the large gear 710 is sleeved at the end part of the driven shaft 120, and the number of teeth of the small gear 720 is smaller than that of the large gear 710.

The second embodiment shown in fig. 1 and 3: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a big gear 710 and a small gear 720 which are engaged with each other, the full tooth height of the small gear 720 is smaller than that of the big gear 710, the groove width of the small gear 720 is smaller than that of the big gear 710, the small gear 720 is fixedly arranged in a snap ring 111 at the center of one end of the outer rotor motor 110 without a motor shaft through a circular truncated cone arranged at one end of the small gear 720, a shaft hole arranged at the center of the big gear 710 is sleeved at the middle part of the driven shaft 120, and the number of teeth of the small gear 720 is smaller than that of the big gear 710.

Embodiment three as shown in fig. 1 and 4: a flexible connection structure for connecting an external rotor motor and a driven shaft comprises an external rotor motor 110 and a cylindrical driven shaft 120, wherein the external rotor motor 110 and the driven shaft 120 are connected by a flexible connecting piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first bevel gear 810 and a second bevel gear 820 which are engaged with each other, the first bevel gear 810 is fixedly installed at the center of one end of the outer rotor motor 110 without a motor shaft, a shaft hole at the center of the second bevel gear 820 is sleeved at the end of the driven shaft 120, and the number of teeth of the first bevel gear 810 is less than that of the second bevel gear 820.

The fourth embodiment shown in fig. 1 and 5: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first bevel gear 810 and a second bevel gear 820 which are engaged with each other, the first bevel gear 810 is fixedly installed at the center of one end of the motor shaft of the outer rotor motor 110, a shaft hole at the center of the second bevel gear 820 is sleeved at the middle part of the driven shaft 120, and the number of teeth of the first bevel gear 810 is less than that of the second bevel gear 820.

Embodiment five as shown in fig. 1 and fig. 6: a flexible connection structure for connecting an external rotor motor and a driven shaft comprises an external rotor motor 110 and a cylindrical driven shaft 120, wherein the external rotor motor 110 and the driven shaft 120 are connected by a flexible connecting piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connection member 100 includes a first gear 1010, a second gear 1020, and a pair of chains 1030 engaged with the first gear 1010 and the second gear 1020 at the same time, the first gear 1010 is fixedly installed at the center of one end of the motor shaft of the external rotor motor 110, and a shaft hole provided at the center of the second gear 1020 is sleeved at the end of the driven shaft 120.

Embodiment six as shown in fig. 1 and fig. 7: a flexible connection structure for connecting an external rotor motor and a driven shaft comprises an external rotor motor 110 and a cylindrical driven shaft 120, wherein the external rotor motor 110 and the driven shaft 120 are connected by a flexible connecting piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connection member 100 includes a first gear 1010, a second gear 1020, and a pair of chains 1030 engaged with the first gear 1010 and the second gear 1020, the first gear 1010 is fixedly installed at the center of one end of the outer rotor motor 110 without a motor shaft, and a shaft hole formed at the center of the second gear 1020 is sleeved at the middle of the driven shaft 120.

The seventh embodiment shown in fig. 1, 8, 9 and 10: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connection member 100 includes a first universal connection bridge 1901 and a second universal connection bridge 1902 which are matched with each other, the centers of the first universal connection bridge 1901 and the second universal connection bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction thereof, one end of each of the first universal connection bridge 1901 and the second universal connection bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connection bridge 1901 and the second universal connection bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connection bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connection bridge 1902, a gap 194 for generating displacement between the fan-shaped blocks 192 of the first universal connection bridge 1901 and the second universal connection bridge 1902 is provided with a snap ring 194, wherein the snap ring is sleeved on the end of the driven shaft of the outer rotor of the motor 110, and the second universal connection bridge 1902 is fixedly connected in the annular ring 1902.

As shown in fig. 1, 8, 9 and 11, the eighth embodiment: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902, a large gear 710 and a small gear 720 which are engaged with each other, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction thereof, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, there is the gap 194 that supplies to produce the displacement each other between the segment 192 of the first universal connection bridge 1901 of mutually supporting and second universal connection bridge 1902, wherein first universal connection bridge 1901 overlaps the end at driven shaft 120, the full tooth height of pinion 720 is less than the full tooth height of gear wheel 710, the groove width of pinion 720 is less than the groove width of gear wheel 710, pinion 720 is through setting up in the snap ring 111 at the one end center that external rotor motor 110 does not have the motor shaft through the round platform fixed mounting of its one end, the fixed cover has a connection pole in the shaft hole that gear wheel 710 center set up, the one end interference of connecting the pole has second universal connection bridge 1902, the number of teeth of pinion 720 is less than the number of teeth of gear wheel 710.

The ninth embodiment shown in fig. 1, 8, 9 and 12: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902, a large gear 710 and a small gear 720 which are engaged with each other, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction thereof, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, there is the gap 194 that supplies to produce the displacement each other between the segment 192 of the first universal connection bridge 1901 of mutually supporting and second universal connection bridge 1902, wherein first universal connection bridge 1901 overlaps the end at driven shaft 120, the full tooth height of pinion 720 is less than the full tooth height of gear wheel 710, the groove width of pinion 720 is less than the groove width of gear wheel 710, pinion 720 is through setting up in the snap ring 111 at the one end center that outer rotor motor 110 does not have the motor shaft through the round platform fixed mounting of its one end, the fixed cover has a connection pole in the shaft hole that gear wheel 710 center set up, the both ends of connecting the pole are interference fit with second universal connection bridge 1902 respectively, the number of teeth of pinion 720 is less than the number of teeth of gear wheel 710.

As shown in fig. 1, 8, 9 and 13, the embodiment is as follows: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901 and a second universal connecting bridge 1902 which are matched with each other, and two first bevel gears 810 and a second bevel gear 820 which are meshed with each other, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 which are arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, a gap 194 for generating displacement between the fan-shaped blocks 192, wherein the first universal connecting bridge 1901 is sleeved on the tail end of the first universal connecting bridge 120, the outer bevel gear 820 is fixedly sleeved on one end of the second bevel gear 820, and the outer bevel gear 820 is provided with less than the number of the central shaft hole of the second bevel gear 820, and the outer bevel gear 820.

Embodiment eleven as shown in fig. 1, 8, 9, 14: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901 and a second universal connecting bridge 1902 which are matched with each other, and two first bevel gears 810 and a second bevel gear 820 which are meshed with each other, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 which are arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, a gap 194 for generating displacement between the fan-shaped blocks 192, wherein the first universal connecting bridge 1901 is sleeved on the tail end of the first universal connecting bridge 120, the outer bevel gear 820 fixed at one end of the second universal connecting bridge 1902, and the outer bevel gear 820 is provided with less than the number of the central shaft hole of the second bevel gear 820, and the outer bevel gear 820.

Embodiment twelve as shown in fig. 1, 8, 9, 15: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901 and a second universal connecting bridge 1902 which are matched with each other, a first gear 1010, a second gear 1020 and a pair of chains 1030 which are meshed with the first gear 1010 and the second gear 1020 simultaneously, the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 which are arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the circular center angle corresponding to the fan-shaped groove 193 is larger than the circular center angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, a gap for the mutual displacement generated between the fan-shaped blocks 192 at the end of the first universal connecting bridge 1901 and the second universal connecting bridge 1901 is smaller than the gap formed by the axial center shaft hole 1100 of the driven shaft of the first universal connecting bridge 110, and the driven shaft connecting bridge 1010 is sleeved with the driven shaft hole 1100 without the first gear 1010.

Embodiment thirteen as shown in fig. 1, 8, 9, 16: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902, a first gear 1010, a second gear 1020, and a pair of chains 1030 engaged with the first gear 1010 and the second gear 1020, wherein the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two segments 192 arranged according to an annular array, a segment groove 193 is formed between two adjacent segments 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the segment groove 193 is larger than the central angle corresponding to the segment 192, the sector 192 at the end of the first universal connecting bridge 1901 is inserted into the sector groove 193 at the end of the second universal connecting bridge 1902, a gap 194 for generating displacement between each other exists between the sector 192 of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 which are matched with each other, the first universal connecting bridge 1901 is sleeved at the tail end of the driven shaft 120, the first gear 1010 is fixedly installed at the center of one end of the outer rotor motor 110 without a motor shaft, a connecting round rod 1100 is fixedly sleeved in a shaft hole formed in the center of the second gear 1020, the two ends of the connecting round rod 1100 are respectively assembled with the second universal connecting bridge 1902 in an interference manner, and the number of teeth of the first gear 1010 is less than that of the second gear 1020.

The fourteen embodiments shown in fig. 1, 17 and 18: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector comprises a shaft sleeve 1210, a large bearing 1220, a small bearing 1230 and a support shaft 1240, wherein the outer ring of the large bearing 1220 is fixedly arranged in the shaft sleeve 1210, the outer ring of the small bearing 1230 is sleeved in the inner ring of the large bearing 1220, one end of the support shaft 1240 is inserted into the small bearing 1230, the other end of the support shaft 1240 is inserted into a snap ring 111 arranged at the center of one end, without the motor shaft, of the outer rotor motor 110, one end of the shaft sleeve 1210 is provided with four clamping grooves 1211 arranged according to an annular array, the four clamping grooves 1211 are clamped with four protruding ribs arranged according to the annular array at one end, without the motor shaft, of the outer rotor motor 110, the circumferential width of the protruding ribs is smaller than that of the clamping grooves 1211, and a shaft hole at the center of the other end of the shaft sleeve 1210 is sleeved at the tail end of the driven shaft 120.

Example fifteen: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902, a shaft sleeve 1210, a large bearing 1220, a small bearing 1230 and a support shaft 1240 which are mutually matched, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end part of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end part of the first universal connecting bridge 1901 is inserted into the fan-shaped groove at the end part of the second universal connecting bridge 1902 193, a gap 194 for generating displacement between the first universal connecting bridge 1901 and the sector 192 of the second universal connecting bridge 1902 is formed between the first universal connecting bridge 1901 and the sector 192 of the second universal connecting bridge 1902, wherein the first universal connecting bridge 1901 is sleeved at the end of the driven shaft 120, the outer ring of the large bearing 1220 is fixedly installed in the shaft sleeve 1210, the outer ring of the small bearing 1230 is sleeved in the large bearing 1220, one end of the support shaft 1240 is inserted into the small bearing 1230, the other end of the support shaft 1240 is inserted into the snap ring 111 arranged at the center of one end of the motor shaft of the outer rotor motor 110, one end of the shaft sleeve 1210 is provided with four clamping slots 1211 arranged in an annular array and clamped with four protruding ribs arranged in an annular array at one end of the motor shaft of the outer rotor motor 110, the circumferential width of the protruding ribs is smaller than that of the clamping slots 1211, and the shaft hole at the center of the other end of the shaft sleeve 1210 is connected in series with the shaft hole at the center of the second universal connecting bridge 1902 through a connecting round rod.

The embodiment shown in fig. 1, 19 and 20 is sixteen: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connecting piece 100 comprises a flange 200 with a shaft hole 201 in the center, one end of the motor shaft of the outer rotor motor 110 is provided with four screw holes 113 which are arranged according to an annular array, a round hole 202 is arranged on the flange 200 corresponding to the screw holes 113 on the outer rotor motor 110, the round hole 202 on the flange 200 is connected with the screw holes 113 on the outer rotor motor 110 in series through a bolt 203 by the flange 200, the diameter of the round hole 202 is larger than the outer diameter of the screw part of the bolt 203, and the shaft hole 201 in the center of the flange 200 is sleeved at the tail end of the driven shaft 120.

The seventeenth embodiment shown in fig. 1, 8, 9, 20, 21 and 22: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connecting piece 100 comprises a first universal connecting bridge 1901 and a second universal connecting bridge 1902 which are matched with each other, a flange 200 with a shaft hole 201 in the center and a connecting circular rod 1100, the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, a gap 194 for generating displacement between the fan-shaped blocks 192 of the first universal connecting bridge 1901 and the second universal connecting bridge 1901 which are matched with each other exists between the central block 192, wherein the first universal connecting bridge 1901 is sleeved on the tail end of the universal connecting bridge 120, the first universal connecting bridge 1901 and the outer rotor 200 of the motor are provided with a screw hole 202 which is connected with the outer rotor 200 through the central screw hole 202 of the outer rotor 200 which is arranged in series connection of the motor through the central screw bolt hole 202, and the central screw hole 202 of the outer rotor 200, and the outer rotor shaft hole 202 of the motor which is arranged in series connection shaft hole 202, and the outer rotor shaft hole 202 of the motor, and the outer rotor shaft hole 202 of the outer rotor 200 which is arranged in the motor.

The embodiment shown in fig. 1, 23 and 24 is eighteen: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connecting piece 100 comprises a cylindrical clamping jaw 300 with a shaft hole in the center, one end of the cylindrical clamping jaw 300 is provided with four clamping grooves 301 which are arranged according to an annular array, one end of the outer rotor motor 110 without the motor shaft is provided with four protruding ribs 112 which are arranged according to the annular array, the circumferential width of the protruding ribs 112 is smaller than that of the clamping grooves 301, the clamping grooves 301 of the cylindrical clamping jaw 300 are matched with the protruding ribs 112 on the end face of the outer rotor motor 110, and the shaft hole in the center of the cylindrical clamping jaw 300 is sleeved at the tail end of the driven shaft 120.

As shown in fig. 1, 8, 9, 24, 25 and 26, the embodiment is nineteen: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901 and a second universal connecting bridge 1902 which are matched with each other, and a cylindrical claw 300 with a shaft hole at the center, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than that corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, there is the gap 194 that supplies to produce the displacement each other between the segment 192 of the first universal connection bridge 1901 of mutually supporting and second universal connection bridge 1902, wherein first universal connection bridge 1901 overlaps the end at driven shaft 120, the one end of cylindrical jack catch 300 has four draw-in grooves 301 of arranging according to annular array, the one end that outer rotor motor 110 does not have the motor shaft is equipped with four protruding muscle 112 of arranging according to annular array, and the circumference width of protruding muscle 112 is less than the circumference width of draw-in groove 301, the draw-in groove 301 of cylindrical jack catch 300 cooperatees with the protruding muscle 112 of outer rotor motor 110 terminal surface, the shaft hole at cylindrical jack catch 300 center is established ties through connecting round bar 1100 and the central shaft hole 191 of second universal connection bridge 190.

Embodiment twenty as shown in fig. 1, 27: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 includes a chuck 410 having a shaft hole at the center, four pin holes 411 arranged in an annular array are formed on the chuck 410, four screw holes 113 arranged in an annular array are formed at one end of the motor shaft of the outer rotor motor 110, a pin block 420 is screwed to each screw hole 113, the pin block 420 is inserted into the corresponding pin hole 411 on the chuck 410, a gap is formed between any one surface of the pin block 420 and the inner wall of the pin hole 411, and the shaft hole at the center of the chuck 410 is sleeved at the end of the driven shaft 120.

The embodiments twenty-one shown in fig. 1, 8, 9, 28: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902 and a chuck 410, wherein the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are matched with each other, the chuck 410 is provided with a shaft hole at the center, the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction of the first universal connecting bridge, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, there is the gap 194 that supplies to produce the displacement each other between the segment 192 of the first universal connection bridge 1901 and the second universal connection bridge 1902 of mutually supporting, wherein first universal connection bridge 1901 overlaps the end at driven shaft 120, a plurality of pinhole 411 of arranging according to annular array have been seted up on the chuck 410, the one end that the outer rotor motor 110 does not have the motor shaft is equipped with four screw holes 113 of arranging according to annular array, a round pin piece 420 of every screw hole 113 department spiro union, insert in the pinhole 411 that corresponds on the chuck 410 for round pin piece 420, and all there is the clearance between arbitrary face of round pin piece 420 and the pinhole 411 inner wall, the shaft hole at the center of chuck 410 is established ties through connecting shaft hole 191 at round bar 1100 and second universal connection bridge 1902 center.

The embodiment twenty two as shown in fig. 1 and 29: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connection member 100 comprises an outer gear 510 having a shaft hole at the center, and an inner gear 520 positioned outside the outer gear 510 and engaged with the outer gear 510, wherein the radius of the addendum circle of the outer gear 510 is smaller than the radius of the tooth space circle of the inner gear 520, one end of the outer rotor motor 110 without the motor shaft is provided with four screw holes 113 arranged in an annular array, the inner gear 520 fixedly mounts the screw holes on the inner gear 520 and the screw holes on the outer rotor motor 110 in series through bolts, and the shaft hole at the center of the outer gear 510 is sleeved at the end of the driven shaft 120.

Twenty-three embodiments as shown in fig. 1, 8, 9, 30: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902, an external gear 510 and an internal gear 520, wherein the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are matched with each other, the external gear 510 is provided with a shaft hole at the center, the internal gear 520 is positioned outside the external gear 510 and is meshed with the external gear 510, the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped blocks 192, the sector block 192 at the end of the first universal connecting bridge 1901 is inserted into the sector groove 193 at the end of the second universal connecting bridge 1902, a gap 194 for mutual displacement exists between the sector blocks 192 of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 which are matched with each other, wherein the first universal connecting bridge 1901 is sleeved at the tail end of the driven shaft 120, the addendum circle radius of the external gear 510 is smaller than the tooth socket circle radius of the internal gear 520, one end of the external rotor motor 110 without the motor shaft is provided with four screw holes 113 arranged according to an annular array, the internal gear 520 connects the screw holes on the internal gear 520 and the screw holes on the external rotor motor 110 in series through bolts and is fixedly installed on the external rotor motor 110, and the shaft hole at the center of the external gear 510 is connected with the shaft hole 191 at the center of the second universal connecting bridge 1902 in series through a connecting circular rod.

The embodiment shown in fig. 1 and 31 is twenty-four: a flexible connection structure for connecting an external rotor motor and a driven shaft comprises an external rotor motor 110 and a cylindrical driven shaft 120, wherein the external rotor motor 110 and the driven shaft 120 are connected by a flexible connecting piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connection member 100 includes a universal joint, one end of the motor shaft of the outer rotor motor 110 is provided with a circular snap ring 111, one end of the universal joint 600 is fixedly installed in the snap ring 111, and the other end of the universal joint 600 is sleeved at the end of the driven shaft 120.

The embodiments shown in fig. 1, 8, 9, 32 are twenty-five: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connection member 100 comprises a first universal connection bridge 1901, a second universal connection bridge 1902 and a universal joint 600, wherein the centers of the first universal connection bridge 1901 and the second universal connection bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction of the first universal connection bridge 1901 and the second universal connection bridge 1902, one end of each of the first universal connection bridge 1901 and the second universal connection bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connection bridge 1901 and the second universal connection bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than the central angle corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connection bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connection bridge 1902, a snap ring 194 for generating displacement is arranged between the first universal connection bridge 1901 and the fan-shaped blocks 192 of the second universal connection bridge 1902, wherein the first universal connection bridge 1901 is sleeved at the end of the driven shaft 120, one end of the outer rotor 110 is provided with a snap ring 111, and the other end of the universal connection bridge 600 is connected with the circular shaft hole 1100 in series, and the second universal connection bridge 600, and the other end of the universal connection bridge 111 is connected with the second universal connection bridge 600 in series.

The embodiment twenty-six as shown in fig. 1, 33, 34: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connecting member 100 comprises a hexagonal prism 910, a bushing 920 and an annular fixture block 930, wherein one end of the bushing 920 is provided with a hexagonal prism-shaped inner hole 921, the other end of the bushing 920 is provided with a shaft hole, the cross section of the hexagonal prism 910 has the same shape as that of the inner hole 921, but the cross section of the hexagonal prism 910 has a smaller area than that of the inner hole 921, a regular hexagonal hole 931 with the same shape and size as that of the hexagonal prism 910 is arranged at the center of the annular fixture block 930, the annular fixture block 930 is fixedly arranged in the clamping ring 111 arranged at the center of the non-shaft end of the external rotor motor 110, one end of the hexagonal prism 910 is inserted into the regular multi-hexagonal hole 931 of the annular fixture block 930, the other end of the hexagonal prism 910 is inserted into the inner hole 921 of the bushing 920, and the shaft hole of the bushing 920 is fixedly sleeved at the tail end of the driven shaft 120.

The embodiments shown in fig. 1, 8, 9, 34, 35 are twenty-seven: a flexible connection structure for connecting an outer rotor motor and a driven shaft comprises an outer rotor motor 110 and a cylindrical driven shaft 120, wherein the outer rotor motor 110 and the driven shaft 120 are connected through a flexible connection piece 100 which allows axial displacement and radial displacement of a connection part.

The flexible connector 100 comprises a first universal connecting bridge 1901, a second universal connecting bridge 1902, a hexagonal prism 910, a shaft sleeve 920 and an annular fixture block 930, wherein the centers of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 are respectively provided with a circular shaft hole 191 along the axial direction, one end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902 is provided with two fan-shaped blocks 192 arranged according to an annular array, a fan-shaped groove 193 is formed between two adjacent fan-shaped blocks 192 at the end of each of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the central angle corresponding to the fan-shaped groove 193 is larger than that corresponding to the fan-shaped block 192, the fan-shaped block 192 at the end of the first universal connecting bridge 1901 is inserted into the fan-shaped groove 193 at the end of the second universal connecting bridge 1902, a gap 194 for mutual displacement is formed between the fan-shaped blocks 192 of the first universal connecting bridge 1901 and the second universal connecting bridge 1902, the first universal connecting bridge 1901 is sleeved at the tail end of the driven shaft 120, one end of the shaft sleeve 920 is provided with a hexagonal prism-shaped inner hole 921, the other end of the shaft sleeve 920 is provided with a circular shaft hole, the cross section of the hexagonal prism 910 is the same as that of the inner hole 921, but the cross section of the hexagonal prism 910 is smaller than that of the inner hole 921, the center of the annular fixture block 930 is provided with a regular hexagonal hole 931 with the same shape and size as that of the cross section of the hexagonal prism 910, the annular fixture block 930 is fixedly installed in a fixture ring arranged at the center of the non-shaft end of the external rotor motor 110, one end of the hexagonal prism 910 is inserted into the regular hexagonal hole 931 of the annular fixture block 930, the other end of the hexagonal prism 910 is inserted into the inner hole of the shaft sleeve, and the shaft hole of the shaft sleeve 920 is connected in series with the shaft hole 191 at the center of the second universal connecting bridge 1902 through a connecting rod 1100.

As shown in fig. 36, a waterwheel comprises an outer rotor motor 110, a flexible connection member 100, a driven shaft 120, impellers 130, a floating plate 140, a frame 150, shaft supports 160, bearing seats 170, an outer rotor motor driver 180, and a motor table 190, wherein the floating plate 140 has two pieces and is respectively and fixedly installed at the bottom of two ends of the frame 150, a motor shaft of the outer rotor motor 110 is fixedly installed in the shaft supports 160 on the motor table 151 located at one side or the middle of the frame 150, two ends of the driven shaft 120 are respectively and rotatably installed in the two parallel bearing seats 170 located on the frame 150, the impellers 130 are fixedly sleeved on the driven shaft 120, the driven shaft 120 is connected with one end of the outer rotor motor 110 without the motor shaft through the flexible connection member 100, the outer rotor motor driver 180 is fixedly installed on the frame beside the outer rotor motor 110, and the outer rotor motor driver 180 is connected with the outer rotor motor 110 through a conducting wire.

Preferably, the connecting rod 1100 of the flexible connector 100 is rotatably mounted in a bearing housing 170 fixed to the motor mount 151.

When the waterwheel adopts a flexible connection structure in the first, third, fifth, seventh, eighth, tenth, twelfth, fourteenth, fifteenth, sixteen seventh, eighteen, nineteen, twenty-one, twenty-two, twenty-three, twenty-four, twenty-five, twenty-six and twenty-seven embodiments, the outer rotor motor is positioned at one side of the waterwheel, namely the impeller is positioned at the same side of the outer rotor motor; when the waterwheel adopts the flexible connection structure in the second, fourth, sixth, ninth, eleventh and thirteenth embodiments, the outer rotor motor is positioned in the middle of the waterwheel, namely, the impellers are respectively positioned on two sides of the outer rotor motor.

The water wheel working process: after the waterwheel is installed, the waterwheel is placed in water, the bottom of an impeller of the waterwheel is in contact with the water, power is supplied to an external rotor motor driver, the external rotor motor driver supplies current to an external rotor motor to drive the external rotor motor to work, the rotation of an external rotor of the external rotor motor transmits power to a shaft through a flexible connecting piece, so that the shaft drives the impeller to rotate together, the impeller rotates to stir up the water to the upper part of the water surface to form water splash, the water splash is in full contact with the air to dissolve oxygen in the air, and then the water splash falls into the water, so that the oxygen content in the water is increased.

In the invention, the shaft is tightly matched with the shaft hole, the connecting round rod is tightly matched with the shaft hole, and the motor shaft is tightly matched with the shaft support seat.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims (3)

1. The utility model provides a connect flexible connection structure of external rotor electric machine and driven shaft which characterized in that: the flexible connection device comprises an outer rotor motor and a cylindrical driven shaft, wherein the outer rotor motor is connected with the driven shaft through a flexible connection piece which allows the connection part to generate axial displacement and radial displacement;

the flexible connecting piece comprises a first universal connecting bridge and a second universal connecting bridge which are matched with each other, the centers of the first universal connecting bridge and the second universal connecting bridge are respectively provided with a circular shaft hole along the axial direction of the first universal connecting bridge and the second universal connecting bridge, one end of each of the first universal connecting bridge and the second universal connecting bridge is at least provided with two fan-shaped blocks which are distributed according to an annular array, a fan-shaped groove is formed between two adjacent fan-shaped blocks at the end part of each of the first universal connecting bridge and the second universal connecting bridge, a circle center angle corresponding to the fan-shaped groove is larger than a circle center angle corresponding to the fan-shaped block, the fan-shaped block at the end part of the first universal connecting bridge is inserted into the fan-shaped groove at the end part of the second universal connecting bridge, a gap for mutual displacement is formed between the fan-shaped blocks of the first universal connecting bridge and the second universal connecting bridge which are matched with each other, and the first universal connecting bridge is sleeved at the tail end of the driven shaft;

the flexible connecting piece comprises an outer gear and an inner gear, the center of the outer gear is provided with a shaft hole, the inner gear is positioned outside the outer gear and meshed with the outer gear, the radius of the addendum circle of the outer gear is smaller than that of the tooth space circle of the inner gear, one end of the motor shaft of the outer rotor motor is provided with a plurality of screw holes which are distributed according to an annular array, the inner gear is fixedly installed on the outer rotor motor in a mode that the screw holes in the inner gear and the screw holes in the outer rotor motor are connected in series through bolts, and the shaft hole in the center of the outer gear is sleeved at the tail end of a driven shaft or is connected with the shaft hole in the center of the second universal connecting bridge in series through a connecting round rod.

2. A waterwheel is characterized in that: the waterwheel comprises an outer rotor motor, the flexible connecting piece of claim 1, a driven shaft, impellers, floating plates, a frame, a shaft supporting seat, bearing seats and an outer rotor motor driver, wherein the two floating plates are fixedly arranged at the bottom of two ends of the frame respectively, a motor shaft of the outer rotor motor is fixedly arranged at one side of the frame, two ends of the driven shaft are rotatably arranged in the two parallel bearing seats on the frame respectively, the impellers are fixedly sleeved on the driven shaft, the driven shaft is connected with one end of the outer rotor motor without the motor shaft through the flexible connecting piece, the outer rotor motor driver is fixedly arranged on the frame beside the outer rotor motor, and the outer rotor motor driver is connected with the outer rotor motor through a lead.

3. The waterwheel of claim 2, wherein: and a connecting round rod of the flexible connecting piece is rotatably arranged in a bearing seat fixed on the motor platform.

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