Multifunctional motor

Abstract

The invention relates to the field of motors, and discloses a multifunctional motor, which comprises a shell; the stator assembly is arranged on the inner side of the machine shell; the rotor assembly is provided with a rotating shaft, and the rotating shaft is rotationally connected to the machine shell and penetrates through the stator assembly; the planetary plate is rotationally connected to the rotating shaft, the bottom end of the rotating shaft downwards protrudes out of the planetary plate, and an output gear is rotationally connected to the position, deviating from the axis of the rotating shaft, of the bottom side of the planetary plate; a clutch assembly is arranged among the transmission gear, the rotating shaft and the planetary plate, the output gear is in transmission connection with the transmission gear, and the rotating shaft can be in transmission connection with the transmission gear or the planetary plate through the clutch assembly; the brake assembly is arranged between the planetary plate and the machine shell, and the brake assembly can limit or release rotation of the planetary plate, the position and mode of outputting power outwards can be flexibly adjusted according to use requirements, the applicability to different scenes is improved, the overall structure is compact, and the use requirements of small and micro equipment are better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric machines, in particular to a multifunctional electric machine. BACKGROUND

[0002] The electric machine usually uses one of the coil or the magnet as the stator and the other as the rotor to output the rotating power outside. The current way of outputting the power of the electric machine is single in position, and in use, the transmission accessories such as gears and transmission wheels are usually combined to change the form of outputting the power outside. With the development of technology, the requirement for the output power is also higher and higher. For example, the mop inside the mop machine and the execution end inside the processing machine, which can only output the power outside at a fixed position. If the output position needs to be changed during use, the transmission accessories such as couplings and connecting rod mechanisms need to be combined at the output end of the electric machine, resulting in a bulky overall structure, which requires a large installation space inside the machine, especially difficult to apply to micro machines. Therefore, there is an urgent need for an electric machine that can change the output position during use and has a compact structure. SUMMARY

[0003] The present application aims to provide a multifunctional electric machine to solve one or more technical problems in the prior art, at least to provide a beneficial choice or create conditions.

[0004] According to the first aspect of the present application, a multifunctional electric machine comprises: a machine shell; a stator assembly arranged on the inner side of the machine shell; a rotor assembly having a rotating shaft, the rotating shaft being rotatably connected to the machine shell, and the rotating shaft penetrating the stator assembly; a planetary disc rotatably connected to the rotating shaft, the bottom end of the rotating shaft protruding downward from the planetary disc, and an output gear being rotatably connected to the position deviated from the axis of the rotating shaft on the bottom side of the planetary disc; a transmission gear in transmission connection with the output gear, and a clutch assembly being arranged between the transmission gear, the rotating shaft and the planetary disc, the clutch assembly being capable of transmission connecting the rotating shaft to the transmission gear or the planetary disc; and a brake assembly arranged between the planetary disc and the machine shell, the brake assembly being capable of limiting or releasing the rotation of the planetary disc.

[0005] The technical scheme has at least the following beneficial effects: in use, the rotating shaft rotates inside the shell and outputs power to the outside through the output gear, the output gear has multiple forms of output power, specifically, the brake assembly is in a state of limiting rotation of the planetary disc, the clutch assembly is in a state of driving connection between the rotating shaft and the transmission gear, when the rotating shaft rotates, the power of the rotating shaft is transmitted to the transmission gear, at this time, the transmission gear directly drives the output gear to rotate, and the rotating power is output to the outside; or the brake assembly is in a state of releasing rotation of the planetary disc, and the clutch assembly is in a state of driving connection between the rotating shaft and the planetary disc, when the rotating shaft rotates, the power of the rotating shaft is transmitted to the planetary disc, and the planetary disc rotates around the rotating shaft, at this time, the output gear deviating from the axis of the rotating shaft rotates around the rotating shaft, thereby changing the output position, the position of the output gear can be adjusted in this way, after completion, the state of the rotating shaft driving the output gear to rotate is switched to, or the state of the output gear rotating around the rotating shaft is kept, since the transmission gear is in driving connection with the output gear, the output gear can also rotate around the rotating shaft while rotating, thereby changing the output position and then providing rotating power, or rotating around the rotating shaft while outputting rotating driving power to the outside, in this way, the position and mode of output power can be flexibly adjusted according to the use requirement, the applicability to different scenes is improved, the overall structure is compact, and the use requirement of small and micro devices is better met.

[0006] According to some embodiments of the present application, the clutch assembly comprises an upper coil, an upper transmission ring, a power ring, a lower coil and a lower transmission ring. The power ring is connected to the rotating shaft and protrudes downward beyond the end of the planetary disc. The upper transmission ring is connected to the bottom side of the planetary disc and is coaxially arranged with the rotating shaft. An upper transmission cavity is formed between the bottom side of the upper transmission ring and the top side of the power ring. Two upper sealing rings are arranged in the upper transmission cavity along the radial direction of the power ring. The upper coil is arranged in the upper transmission ring. The lower transmission ring is connected to the top side of the transmission gear and is rotatably connected to the outside of the rotating shaft. A lower transmission cavity is formed between the top side of the lower transmission ring and the bottom side of the power ring. The lower coil is arranged in the lower transmission ring. Two lower sealing rings are arranged in the lower transmission cavity along the radial direction of the power ring. The upper transmission cavity and the lower transmission cavity are respectively filled with the first magneto-rheological fluid. The two upper sealing rings can seal the inside and outside of the upper transmission cavity, and the two lower sealing rings can seal the inside and outside of the lower transmission cavity, so that the first magneto-rheological fluid can be filled in the upper transmission cavity and the lower transmission cavity. The clutch assembly can be in transmission connection with the transmission gear or the planetary disc. Specifically, when the clutch assembly needs to be in transmission connection with the transmission gear, the lower coil is electrified. At this time, the first magneto-rheological fluid in the lower transmission cavity becomes high-viscosity and low-flow under the magnetic field formed by the lower coil, so that the lower transmission ring and the power ring move synchronously. The upper coil is in a non-electrified state. At this time, the first magneto-rheological fluid in the upper transmission cavity is in a low-viscosity and high-flow state. The upper transmission ring and the power ring are in a state of mutual separation. When the rotating shaft rotates, the power is transmitted to the transmission gear through the power ring and the lower transmission ring, so as to realize the transmission connection between the rotating shaft and the transmission gear. When the clutch assembly needs to be in transmission connection with the planetary disc, the upper coil is electrified. At this time, the first magneto-rheological fluid in the upper transmission cavity becomes high-viscosity and low-flow under the magnetic field formed by the upper coil, so that the upper transmission ring and the power ring move synchronously. The lower coil is in a non-electrified state. At this time, the first magneto-rheological fluid in the lower transmission cavity is in a low-viscosity and high-flow state. The lower transmission ring and the power ring are in a state of mutual separation. When the rotating shaft rotates, the power is transmitted to the planetary disc through the power ring and the upper transmission ring, so as to realize the transmission connection between the rotating shaft and the planetary disc.

[0007] According to some embodiments of the present application, an upper mounting groove is formed between the bottom side of the planetary disc and the top side of the upper transmission ring, and the upper coil is arranged in the upper mounting groove. A lower mounting groove is formed between the bottom side of the lower transmission ring and the top side of the transmission gear, and the lower coil is arranged in the lower mounting groove. A space for mounting the upper coil is formed between the bottom side of the planetary disc and the top side of the upper transmission ring, and a space for mounting the lower coil is formed between the bottom side of the lower transmission ring and the top side of the transmission gear. This is conducive to improving the convenience of mounting and positioning the upper coil and the lower coil, and further improving the overall compactness.

[0008] According to some embodiments of the present application, a rotation-stopping assembly is arranged between the bottom side of the transmission gear and the casing, which can limit or release the rotation of the transmission gear. When the rotating shaft is in transmission connection with the transmission gear, the rotation-stopping assembly releases the rotation limitation of the transmission gear, and at this time, the rotation-stopping assembly itself can form a connection between the bottom side of the transmission gear and the casing, improving the stability of the transmission gear when rotating. When the rotating shaft is in transmission connection with the planetary disc, the rotation-stopping assembly limits the rotation of the transmission gear, so that the output gear rotates more efficiently and stably when rotating around the transmission gear.

[0009] According to some embodiments of the present application, the rotation-stopping assembly comprises an upper rotation-stopping disc, a lower rotation-stopping disc and a rotation-stopping coil. The upper rotation-stopping disc is connected to the bottom side of the transmission gear, the lower rotation-stopping disc is connected to the inner bottom side of the casing, and the rotation-stopping coil is arranged between the lower rotation-stopping disc and the casing. A rotation-stopping cavity is formed between the bottom side of the upper rotation-stopping disc and the top side of the lower rotation-stopping disc. Two rotation-stopping sealing rings are arranged in the rotation-stopping cavity along the radial direction of the lower rotation-stopping disc, and the rotation-stopping cavity is filled with a second magneto-rheological fluid. The two rotation-stopping sealing rings can seal the inside and outside of the rotation-stopping cavity, so that the second magneto-rheological fluid can be filled in the rotation-stopping cavity. When it is necessary to limit the rotation of the transmission gear, the rotation-stopping coil is energized, and at this time, the second magneto-rheological fluid in the rotation-stopping cavity becomes high-viscosity and low-flow under the magnetic field formed by the rotation-stopping coil, limiting the relative rotation between the lower rotation-stopping disc and the upper rotation-stopping disc, thereby relatively locking the transmission gear and the casing. When it is necessary to release the rotation limitation of the transmission gear, the rotation-stopping coil is de-energized, and at this time, the second magneto-rheological fluid in the rotation-stopping cavity is in a low-viscosity and high-flow state, and the transmission gear can rotate relative to the casing.

[0010] According to some embodiments of the present application, a transfer wheel is arranged at the position between the transmission gear and the output gear, and the transfer wheel is in meshing connection with the transmission gear and the output gear. The transmission gear transmits power to the output gear through the transfer wheel. In use, by installing and using transfer wheels of different specifications, the rotation speed, torque and other use performances of the output gear can be adjusted.

[0011] According to some embodiments of the present application, the brake assembly comprises a fixed ring, an upper brake ring, a lower brake ring and a brake coil, the fixed ring is connected to the inner side of the casing, the upper brake ring is connected to the bottom side of the fixed ring, the brake coil is arranged between the fixed ring and the upper brake ring, the lower brake ring is connected to the top side of the planet disc, a brake cavity is formed between the bottom side of the upper brake ring and the bottom side of the lower brake ring, two brake sealing rings are spaced apart along the radial direction of the lower brake ring in the brake cavity, and the brake cavity is filled with a third magneto-rheological fluid. The two brake sealing rings can seal the inside and outside of the brake cavity, so that the third magneto-rheological fluid can be filled in the brake cavity. When it is needed to limit the rotation of the planet disc, the brake coil is energized, at this time the third magneto-rheological fluid in the brake cavity becomes a state of high viscosity and low flowability under the magnetic field formed by the brake coil, limiting the relative rotation between the lower brake ring and the upper brake ring, thereby relatively locking the planet disc and the fixed ring fixed to the inner side of the casing; when it is needed to release the rotation limitation of the planet disc, the energization of the brake coil is stopped, at this time the third magneto-rheological fluid in the brake cavity is in a state of low viscosity and high flowability, and the planet disc can rotate relative to the casing.

[0012] According to some embodiments of the present application, the casing comprises a main shell and an end cover, the main shell is internally formed with a cavity with an opening arranged downward, the end cover is connected to the bottom side of the main shell, the stator assembly is arranged inside the main shell, the top end of the rotating shaft is rotationally connected to the inner top side of the main shell, the brake assembly is arranged between the planet disc and the inner side of the main shell, and the end cover is provided with a avoiding port avoiding the output gear. The end cover is used to cover the cavity arranged downward of the main shell, at this time the avoiding port is arranged on the end cover corresponding to the position of the output gear, so that the connecting piece of the external device can be conveniently connected with the output gear.

[0013] According to some embodiments of the present application, the top side of the end cover is connected with a connecting barrel extending upward, the top end of the connecting barrel is connected to the planet disc, and a rotating sleeve is arranged between the connecting barrel and the main shell. After the connecting barrel at the top side of the end cover is connected with the planet disc, when the planet disc rotates, the end cover can be driven to rotate synchronously through the connecting barrel, so that the stability of the rotation of the planet disc can be improved, and the output gear can be kept positioned with the avoiding port, thereby reducing the area needed to be opened in the avoiding port and better utilizing the end cover to protect the internal structure of the main shell.

[0014] According to some embodiments of the present application, the bottom side of the output gear is connected with an output connector, the output connector protrudes from the end cover downwardly from the avoiding opening, and a sealing sleeve is arranged between the output connector and the end cover. The output connector protrudes from the avoiding opening to the end cover, is connected with the structural member of the external device, and is connected with the end cover at the avoiding opening by the sealing sleeve, which can improve the stability of the output connector and fill and protect the gap between the output connector and the end cover at the avoiding opening. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below. Obviously, the described drawings are only some of the embodiments of the present application, not all the embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0016] Figure 1 is a schematic diagram of the overall internal structure of the present application.

[0017] Figure 2 is a schematic diagram of the overall internal structure of the present application. Figure 1

[0018] Figure 3 is a schematic diagram of the overall internal structure of the present application. Figure 1

[0019] Figure 4 is a schematic diagram of the overall internal structure of the present application. Figure 1

[0020] Figure 5 is a schematic diagram of the overall internal structure of the present application. Figure 1

[0021] ​​​​In the drawings: 110-main housing, 120-end cover, 130-connection cylinder, 140-rotary sleeve, 200-stator assembly, 300-rotor assembly, 310-rotating shaft, 410-planet disc, 420-output gear, 430-driving gear, 440-output connector, 500-clutch assembly, 510-upper coil, 520-upper driving ring, 530-power ring, 540-lower coil, 550-lower driving ring, 560-upper driving cavity, 570-upper sealing ring, 580-lower driving cavity, 590-lower sealing ring, 600-brake assembly, 610-fixed ring, 620-upper brake ring, 630-lower brake ring, 640-brake coil, 650-brake cavity, 660-brake sealing ring, 700-rotation-stopping assembly, 710-upper rotation-stopping disc, 720-lower rotation-stopping disc, 730-rotation-stopping coil, 740-rotation-stopping cavity, 750-rotation-stopping sealing ring, 800-intermediate gear, 910-sliding seat, 920-upper locking disc, 930-upper locking coil, 940-connection sleeve, 950-driving disc, 960-upper locking sealing ring, 970-lower locking disc, 971-lower locking coil, 972-lower locking sealing ring, 980-locking gear, 990-arc-shaped rack. DETAILED DESCRIPTION

[0022] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application. In addition, all the connection relationships mentioned in the text do not mean that the components are directly connected, but that a more optimal connection structure can be composed by adding or reducing connecting accessories according to the specific implementation. The technical features in the present application can be combined with each other without conflict.

[0023] REFERENCE Figure 1According to the embodiment of the first aspect of the present application, the multifunctional motor comprises: a casing; a stator assembly 200 arranged on the inner side of the casing; a rotor assembly 300 having a rotating shaft 310, the rotating shaft 310 being rotationally connected to the casing, and the rotating shaft 310 penetrating the stator assembly 200; a planetary disc 410 rotationally connected to the rotating shaft 310, the bottom end of the rotating shaft 310 protruding downward beyond the planetary disc 410, and an output gear 420 rotationally connected to the bottom side of the planetary disc 410 at a position deviated from the axis of the rotating shaft 310; a transmission gear 430 in transmission connection with the output gear 420, and a clutch assembly 500 arranged between the transmission gear 430 and the rotating shaft 310 and the planetary disc 410, the clutch assembly 500 being capable of transmissionally connecting the rotating shaft 310 to the transmission gear 430 or the planetary disc 410; and a brake assembly 600 arranged between the planetary disc 410 and the casing, the brake assembly 600 being capable of limiting or releasing the rotation of the planetary disc 410.

[0024] In the multifunctional motor, when in use, the rotating shaft 310 rotates inside the casing and outputs power outward through the output gear 420. The output gear 420 can output power in various forms. Specifically, the brake assembly 600 is in a state of limiting the rotation of the planetary disc 410, and the clutch assembly 500 is in a state of transmissionally connecting the rotating shaft 310 to the transmission gear 430. When the rotating shaft 310 rotates, the power of the rotating shaft 310 is transmitted to the transmission gear 430. At this time, the transmission gear 430 directly drives the output gear 420 to rotate, and the rotating power is outputted outward. Alternatively, the brake assembly 600 is in a state of releasing the rotation of the planetary disc 410, and the clutch assembly 500 is in a state of transmissionally connecting the rotating shaft 310 to the planetary disc 410. When the rotating shaft 310 rotates, the power of the rotating shaft 310 is transmitted to the planetary disc 410, and the planetary disc 410 rotates around the rotating shaft 310. At this time, the output gear 420 deviated from the axis of the rotating shaft 310 rotates around the rotating shaft 310, thereby changing the output position. The position of the output gear 420 can be adjusted in this way. After adjustment, the rotating shaft 310 can drive the output gear 420 to rotate, or the output gear 420 can keep rotating around the rotating shaft 310. Since the transmission gear 430 is in transmission connection with the output gear 420, the output gear 420 can also rotate while rotating around the rotating shaft 310, thereby changing the output position and then providing rotating power, or providing rotating driving power while rotating around the rotating shaft 310. In this way, the position and mode of the output power can be flexibly adjusted according to the use requirements, the applicability to different scenes is improved, the overall structure is compact, and the use requirements of small and miniature devices are better met.

[0025] Naturally, one of the stator assembly 200 and the rotor assembly 300 is a winding coil and the other is a permanent magnet. For example, the stator assembly 200 is a permanent magnet arranged on the inner side of the housing, and the rotor assembly 300 is a winding coil arranged on the outer side of the rotating shaft 310. When the winding coil is energized, the rotating shaft 310 can be rotated.

[0026] As Figure 2As shown, as a specific embodiment of the clutch assembly 500, the clutch assembly 500 comprises an upper coil 510, an upper transmission ring 520, a power ring 530, a lower coil 540 and a lower transmission ring 550. The power ring 530 is connected to the end of the rotating shaft 310 outside the planetary disc 410. The upper transmission ring 520 is connected to the bottom side of the planetary disc 410 and is coaxially arranged with the rotating shaft 310. An upper transmission cavity 560 is formed between the bottom side of the upper transmission ring 520 and the top side of the power ring 530. Two upper sealing rings 570 are arranged in the upper transmission cavity 560 along the radial direction of the power ring 530. The upper coil 510 is arranged on the upper transmission ring 520. The lower transmission ring 550 is connected to the top side of the transmission gear 430 and is rotationally connected to the outside of the rotating shaft 310. A lower transmission cavity 580 is formed between the top side of the lower transmission ring 550 and the bottom side of the power ring 530. The lower coil 540 is arranged on the lower transmission ring 550. Two lower sealing rings 590 are arranged in the lower transmission cavity 580 along the radial direction of the power ring 530. The upper transmission cavity 560 and the lower transmission cavity 580 are respectively filled with the first magnetic rheological fluid. Of course, in order to electrify the upper coil 510 and the lower coil 540, an electric slip ring can be arranged on the rotating shaft 310 corresponding to the positions of the upper coil 510 and the lower coil 540. The two electric slip rings are respectively electrically connected to the upper coil 510 and the lower coil 540.Two upper sealing rings 570 can seal the inner and outer sides of the upper transmission cavity 560, and two lower sealing rings 590 can seal the inner and outer sides of the upper transmission cavity 560, so that the upper transmission cavity 560 and the lower transmission cavity 580 can be filled with the first magnetic fluid. The clutch assembly 500 can drive the transmission shaft 310 and the transmission gear 430 or the planetary disc 410. Specifically, when the clutch assembly 500 needs to be connected with the transmission gear 430, the lower coil 540 is powered, and the first magnetic fluid in the lower transmission cavity 580 becomes high viscosity and low flow under the magnetic field formed by the lower coil 540, so that the lower transmission ring 550 and the power ring 530 move synchronously, and the upper coil 510 is in a non-powered state, and the first magnetic fluid in the upper transmission cavity 560 is in a low viscosity and high flow state, and the upper transmission ring 520 and the power ring 530 are in a state of mutual separation. When the transmission shaft 310 rotates, the power is transmitted to the transmission gear 430 through the power ring 530 and the lower transmission ring 550, so as to realize the transmission connection between the transmission shaft 310 and the transmission gear 430. When the clutch assembly 500 needs to be connected with the planetary disc 410, the upper coil 510 is powered, and the first magnetic fluid in the upper transmission cavity 560 becomes high viscosity and low flow under the magnetic field formed by the upper coil 510, so that the upper transmission ring 520 and the power ring 530 move synchronously, and the lower coil 540 is in a non-powered state, and the first magnetic fluid in the lower transmission cavity 580 is in a low viscosity and high flow state, and the lower transmission ring 550 and the power ring 530 are in a state of mutual separation. When the transmission shaft 310 rotates, the power is transmitted to the planetary disc 410 through the power ring 530 and the upper transmission ring 520, so as to realize the transmission connection between the transmission shaft 310 and the planetary disc 410.

[0027] In actual application, in order to improve the power transmission efficiency between the upper transmission ring 520 and the power ring 530, a structure such as a stripe can be arranged on the position of the upper transmission ring 520 in the upper transmission cavity 560 and the position of the power ring 530 in the upper transmission cavity 560, so as to enhance the effect of the first magnetic fluid on hindering the relative rotation between the upper transmission ring 520 and the power ring 530 under the magnetic field. Similarly, a structure such as a stripe can also be arranged on the position of the lower transmission ring 550 in the lower transmission cavity 580 and the position of the power ring 530 in the lower transmission cavity 580, so as to improve the power transmission efficiency between the lower transmission ring 550 and the power ring 530.

[0028] In order to facilitate the installation and positioning of the upper coil 510 and the lower coil 540, in the embodiment, an upper installation groove is formed between the bottom side of the planet disc 410 and the top side of the upper transmission ring 520, the upper coil 510 is arranged in the upper installation groove, a lower installation groove is formed between the bottom side of the lower transmission ring 550 and the top side of the transmission gear 430, the lower coil 540 is arranged in the lower installation groove. The space for installing the upper coil 510 is formed between the bottom side of the planet disc 410 and the top side of the upper transmission ring 520, the space for installing the lower coil 540 is formed between the bottom side of the lower transmission ring 550 and the top side of the transmission gear 430, thus facilitating the installation and positioning of the upper coil 510 and the lower coil 540, and further improving the compactness of the overall structure.

[0029] In order to improve the stability of the transmission gear 430 during work, in the embodiment, a rotation stopping assembly 700 is arranged between the bottom side of the transmission gear 430 and the casing, the rotation stopping assembly 700 can limit or release the rotation of the transmission gear 430. When the rotating shaft 310 is in transmission connection with the transmission gear 430, the rotation stopping assembly 700 releases the rotation limitation of the transmission gear 430, at this time, the rotation stopping assembly 700 itself can form a connection between the bottom side of the transmission gear 430 and the casing, improving the stability of the transmission gear 430 during rotation, when the rotating shaft 310 is in transmission connection with the planet disc 410, the rotation stopping assembly 700 limits the rotation of the transmission gear 430, thus making the output gear 420 rotate more efficiently and stably when rotating around the transmission gear 430.

[0030] As Figure 3As shown, as a specific embodiment of the rotation-stopping assembly 700, the rotation-stopping assembly 700 comprises an upper rotation-stopping disc 710 connected to the bottom side of the transmission gear 430, a lower rotation-stopping disc 720 connected to the inner bottom side of the casing, and a rotation-stopping coil 730 arranged between the lower rotation-stopping disc 720 and the casing. A rotation-stopping cavity 740 is formed between the bottom side of the upper rotation-stopping disc 710 and the top side of the lower rotation-stopping disc 720. Two rotation-stopping sealing rings 750 are arranged in the rotation-stopping cavity 740 in the radial direction of the lower rotation-stopping disc 720. The rotation-stopping cavity 740 is filled with the second magneto-rheological fluid. An electric slip ring electrically connected to the rotation-stopping coil 730 can be arranged on the casing, so as to supply electricity to the rotation-stopping coil 730. The two rotation-stopping sealing rings 750 can seal the inside and outside of the rotation-stopping cavity 740, so as to fill the rotation-stopping cavity 740 with the second magneto-rheological fluid. When it is necessary to limit the rotation of the transmission gear 430, electricity is supplied to the rotation-stopping coil 730. At this time, the second magneto-rheological fluid in the rotation-stopping cavity 740 becomes high-viscosity and low-flow under the magnetic field formed by the rotation-stopping coil 730, so as to limit the relative rotation between the lower rotation-stopping disc 720 and the upper rotation-stopping disc 710, thereby relatively locking the transmission gear 430 and the casing. When it is necessary to release the rotation limitation of the transmission gear 430, electricity is stopped from being supplied to the rotation-stopping coil 730. At this time, the second magneto-rheological fluid in the rotation-stopping cavity 740 is in a low-viscosity and high-flow state, so that the transmission gear 430 can rotate relative to the casing.

[0031] In the above embodiment, the output gear 420 can be directly engaged with the transmission gear 430. In the present embodiment, the planetary disc 410 is arranged at a position between the transmission gear 430 and the output gear 420, and a transfer wheel 800 is arranged at the position and engaged with the transmission gear 430 and the output gear 420. The transmission gear 430 transmits power to the output gear 420 through the transfer wheel 800. In use, different specifications of the transfer wheel 800 can be installed, so as to adjust the rotation speed, torque and other use performances of the output gear 420.

[0032] As shown in FIG. 8, the transfer wheel 800 comprises a rotating shaft 810, a rotating disc 820 and a plurality of transfer teeth 830. The rotating shaft 810 is arranged in the rotating disc 820, and the rotating disc 820 is arranged on the rotating shaft 810. The transfer teeth 830 are arranged on the rotating disc 820. The transfer teeth 830 of the transfer wheel 800 are engaged with the transmission gear 430 and the output gear 420. Figure 4As shown, as a specific embodiment of the brake assembly 600, the brake assembly 600 comprises a fixed ring 610, an upper brake ring 620, a lower brake ring 630 and a brake coil 640, the fixed ring 610 is connected to the inner side of the casing, the upper brake ring 620 is connected to the bottom side of the fixed ring 610, the brake coil 640 is arranged between the fixed ring 610 and the upper brake ring 620, the lower brake ring 630 is connected to the top side of the planetary disc 410, a brake cavity 650 is formed between the bottom side of the upper brake ring 620 and the bottom side of the lower brake ring 630, two brake sealing rings 660 are spaced apart along the radial direction of the lower brake ring 630 in the brake cavity 650, the brake cavity 650 is filled with the third magneto-rheological fluid. Of course, the inner side of the casing is provided with an electric slip ring electrically connected to the brake coil 640, so as to supply power to the brake coil 640. The two brake sealing rings 660 can seal the inside and outside of the brake cavity 650, so that the third magneto-rheological fluid can be filled in the brake cavity 650. When it is necessary to limit the rotation of the planetary disc 410, the brake coil 640 is energized, at this time the third magneto-rheological fluid in the brake cavity 650 becomes high viscosity and low flow state under the magnetic field formed by the brake coil 640, limiting the relative rotation between the lower brake ring 630 and the upper brake ring 620, thereby relatively locking the planetary disc 410 and the fixed ring 610 fixed to the inner side of the casing; when it is necessary to release the rotation limitation of the planetary disc 410, the power supply to the brake coil 640 is stopped, at this time the third magneto-rheological fluid in the brake cavity 650 is in a low viscosity and high flow state, and the planetary disc 410 can rotate relative to the casing.

[0033] In the above embodiment, the output gear 420 can only rotate around the rotation shaft 310 to change its position when adjusting the position. In order to further improve the flexibility of adjusting the position of the output gear 420, in the present embodiment, as shown in the figure, Figure 5As shown, the bottom side of the planet disc 410 is provided with an arc-shaped rack 990 extending in an arc shape from the outer side of the planet disc 410 to the middle part of the planet disc 410 with the axis of the transfer wheel 800 as the arc center, the bottom side of the planet disc 410 is slidingly connected with a sliding seat 910, the sliding seat 910 can slide along the extending direction of the arc-shaped rack 990, the bottom side of the sliding seat 910 is connected with an upper locking disc 920, the sliding seat 910 and the upper locking disc 920 are provided with an upper locking coil 930 therebetween, the outer side of the sliding seat 910 is sleeved with a connecting sleeve 940, the connecting sleeve 940 is provided with a transmission disc 950 inside, the transmission disc 950 is rotationally connected to the bottom side of the upper locking disc 920, the upper locking disc 920 and the transmission disc 950 form an upper locking cavity therebetween, the upper locking cavity is provided with two upper locking sealing rings 960 therebetween along the radial direction of the upper locking disc 920, the bottom side of the transmission disc 950 is rotationally connected with a lower locking disc 970, the bottom side of the lower locking disc 970 is provided with a lower locking coil 971, the lower locking disc 970 and the transmission disc 950 form a lower locking cavity therebetween, the lower locking cavity is provided with two lower locking sealing rings 972 therebetween along the radial direction of the lower locking disc 970, the upper locking cavity and the lower locking cavity are both filled with fourth magnetorheological fluid, the outer side of the connecting sleeve 940 is provided with a locking gear 980, the locking gear 980 and the arc-shaped rack 990 are mutually engaged, the output gear 420 is connected to the bottom side of the lower locking disc 970, of course, the sliding seat 910 and the lower locking disc 970 can be respectively provided with electric slip rings, the two electric slip rings are respectively electrically connected to the upper locking coil 930 and the lower locking coil 971 and supply power to the upper locking coil 930 and the lower locking coil 971.When the position of the output gear 420 relative to the planetary disc 410 is not required to be changed, the upper locking coil 930 is powered on, and under the magnetic field of the upper locking coil 930, the fourth magneto-rheological fluid in the upper locking cavity is in a high-viscosity, low-flow state, while the lower locking coil 971 does not need to be powered on, and the fourth magneto-rheological fluid in the lower locking cavity is in a low-viscosity, high-flow state, at this time, the lower locking disc 970 can rotate relative to the transmission disc 950, while the position of the transmission disc 950 relative to the upper locking disc 920 is locked, the locking gear 980 cannot rotate relative to the sliding seat 910, and the position of the sliding seat 910 can be clamped by the meshing of the locking gear 980 and the arc-shaped rack 990, thereby locking the position of the output gear 420 relative to the planetary disc 410; when the position of the output gear 420 relative to the planetary disc 410 is required to be changed, the upper locking coil 930 does not need to be powered on, and the fourth magneto-rheological fluid in the upper locking cavity is in a low-viscosity, high-flow state, the upper locking disc 920 can rotate relative to the transmission disc 950, while the lower locking coil 971 is powered on, and under the magnetic field of the lower locking coil 971, the fourth magneto-rheological fluid in the lower locking cavity is in a high-viscosity, low-flow state, and the transmission disc 950 and the lower locking disc 970 can rotate synchronously, when the power of the intermediate wheel 800 is transmitted to the output gear 420, the power can be transmitted to the locking gear 980 through the lower locking disc 970, the transmission disc 950, and the connecting sleeve 940, and the sliding seat 910 can be driven to move along the arc-shaped rack 990 by the meshing of the locking gear 980 and the locking rack, so that the output gear 420 rotates and shifts around the intermediate wheel 800, thereby adjusting the position of the output gear 420 between the outside of the planetary disc 410 to the middle part, and further improving the flexibility of the position adjustment of the output gear 420.

[0034] As a specific embodiment of the shell, the shell comprises a main shell 110 and an end cover 120, the main shell 110 is internally formed with a cavity with an opening arranged downward, the end cover 120 is connected to the bottom side of the main shell 110, the stator assembly 200 is arranged inside the main shell 110, the top end of the rotating shaft 310 is rotationally connected to the inner top side of the main shell 110, the brake assembly 600 is arranged between the planetary disc 410 and the inner side of the main shell 110, and the end cover 120 is provided with a avoiding port for avoiding the output gear 420. The end cover 120 is used to cover the cavity arranged downward of the main shell 110, at this time, the avoiding port is arranged on the end cover 120 corresponding to the position of the output gear 420, so that the connecting member of the external device can be conveniently connected with the output gear 420.

[0035] When the end cover 120 is fixedly connected to the main shell 110, since the output gear 420 can rotate around the rotating shaft 310, at this time, the avoiding hole needs to have a larger space around the rotating shaft 310, and cannot form a complete ring, which affects the output power of the output gear 420, therefore, in the embodiment, the top side of the end cover 120 is connected with an upwardly extending connecting cylinder 130, the top end of the connecting cylinder 130 is connected to the planetary disc 410, and a rotating sleeve 140 is arranged between the connecting cylinder 130 and the main shell 110. After the connecting cylinder 130 at the top side of the end cover 120 is connected with the planetary disc 410, since the rotating sleeve 140 is arranged between the connecting cylinder 130 and the main shell 110, when the planetary disc 410 rotates, the end cover 120 can be driven to rotate synchronously by the connecting cylinder 130, so that the stability of the rotation of the planetary disc 410 can be improved, and the output gear 420 can be kept in position with the avoiding hole, so that the area of the avoiding hole to be opened can be reduced, and the end cover 120 can better protect the internal structure of the main shell 110. Of course, when the position of the output gear 420 can move between the outside and the middle of the planetary disc 410, the shape of the avoiding hole is arranged according to the movement path of the output gear 420.

[0036] Further, the bottom side of the output gear 420 is connected with an output connector 440, the output connector 440 protrudes downward from the end cover 120 from the avoiding hole, and a sealing sleeve is arranged between the output connector 440 and the end cover 120. The output connector 440 protrudes from the end cover 120 from the avoiding hole, is used for connecting with the structural member of the external device, and is connected with the end cover 120 at the avoiding hole by the sealing sleeve, so that the stability of the output connector 440 can be improved, and the gap between the output connector 440 and the end cover 120 at the avoiding hole can be filled and protected.

[0037] The preferred embodiments of the application are specifically described above, but the application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the application.

Claims

1. A multi-functional electric machine characterized by: The utility model relates to a kind of motor, including: Casing; Stator assembly (200), which is arranged inside the casing; Rotor assembly (300) has rotating shaft (310), the rotating shaft (310) is rotatably connected to the casing, the rotating shaft (310) passes through the stator assembly (200); Planetary disk (410) is rotatably connected to the rotating shaft (310), the bottom end of the rotating shaft (310) protrudes downward the planetary disk (410), the output gear (420) is rotatably connected to the position deviating from the axis of the rotating shaft (310) between the bottom side of the planetary disk (410); Transmission gear (430) is drivingly connected with the output gear (420), the transmission gear (430) is provided with clutch assembly (500) between the rotating shaft (310), the planetary disk (410), the clutch assembly (500) can drive the rotating shaft (310) to be connected on the transmission gear (430) or the planetary disk (410); Brake assembly (600) is arranged between the planetary disk (410) and the casing, and the brake assembly (600) can limit or release the rotation of the planetary disk (410).

2. A multi-functional electric machine according to claim 1, characterized by: The clutch assembly (500) includes upper coil (510), upper transmission ring (520), power ring (530), lower coil (540) and lower transmission ring (550), the power ring (530) is connected to the rotating shaft (310) and protrudes downward the end outside the planetary disk (410), the upper transmission ring (520) is connected to the bottom side of the planetary disk (410) and is coaxially arranged with the rotating shaft (310), the upper transmission ring (520) is formed with an upper transmission cavity (560) between the bottom side of the upper transmission ring (520) and the top side of the power ring (530), two upper sealing rings (570) are arranged in the upper transmission cavity (560) along the radial direction of the power ring (530), the upper coil (510) is arranged on the upper transmission ring (520), the lower transmission ring (550) is connected to the top side of the transmission gear (430) and is rotatably connected to the outside of the rotating shaft (310), the lower transmission ring (550) is formed with a lower transmission cavity (580) between the top side of the lower transmission ring (550) and the bottom side of the power ring (530), the lower coil (540) is arranged on the lower transmission ring (550), two lower sealing rings (590) are arranged in the lower transmission cavity (580) along the radial direction of the power ring (530), and the upper transmission cavity (560) and the lower transmission cavity (580) are respectively filled with first magnetorheological fluid.

3. A multi-functional electric machine according to claim 2, characterized by: An upper mounting groove is formed between the bottom side of the planetary disk (410) and the top side of the upper transmission ring (520), the upper coil (510) is arranged in the upper mounting groove, a lower mounting groove is formed between the bottom side of the lower transmission ring (550) and the top side of the transmission gear (430), and the lower coil (540) is arranged in the lower mounting groove.

4. A multi-functional electric machine according to claim 1, characterized by: A rotation-stopping assembly (700) is arranged between the bottom side of the transmission gear (430) and the casing, and can limit or release the rotation of the transmission gear (430).

5. A multi-functional electric machine according to claim 4, characterized by: The rotation-stopping assembly (700) comprises an upper rotation-stopping disc (710), a lower rotation-stopping disc (720) and a rotation-stopping coil (730). The upper rotation-stopping disc (710) is connected to the bottom side of the transmission gear (430), the lower rotation-stopping disc (720) is connected to the inner bottom side of the casing, and the rotation-stopping coil (730) is arranged between the lower rotation-stopping disc (720) and the casing. A rotation-stopping cavity (740) is formed between the bottom side of the upper rotation-stopping disc (710) and the top side of the lower rotation-stopping disc (720). Two rotation-stopping sealing rings (750) are arranged in the rotation-stopping cavity (740) along the radial direction of the lower rotation-stopping disc (720). The rotation-stopping cavity (740) is filled with a second magnetorheological fluid.

6. A multi-functional electric machine according to claim 1, characterized by: A transfer wheel (800) is arranged at the position between the transmission gear (430) and the output gear (420) of the planetary disc (410). The transfer wheel (800) is meshingly connected to the transmission gear (430) and the output gear (420).

7. A multi-functional electric machine according to claim 1, characterized by: The brake assembly (600) comprises a fixed ring (610), an upper brake ring (620), a lower brake ring (630) and a brake coil (640). The fixed ring (610) is connected to the inner side of the casing, the upper brake ring (620) is connected to the bottom side of the fixed ring (610), and the brake coil (640) is arranged between the fixed ring (610) and the upper brake ring (620). The lower brake ring (630) is connected to the top side of the planetary disc (410). A brake cavity (650) is formed between the bottom side of the upper brake ring (620) and the bottom side of the lower brake ring (630). Two brake sealing rings (660) are arranged in the brake cavity (650) along the radial direction of the lower brake ring (630). The brake cavity (650) is filled with a third magnetorheological fluid.

8. A multi-functional electric machine according to claim 1, characterized by: The casing comprises a main shell (110) and an end cover (120). The main shell (110) has an inner cavity with an opening arranged downward. The end cover (120) is connected to the bottom side of the main shell (110). The stator assembly (200) is arranged on the inner side of the main shell (110). The top end of the rotating shaft (310) is rotationally connected to the inner top side of the main shell (110). The brake assembly (600) is arranged between the planetary disc (410) and the inner side of the main shell (110). The end cover (120) is provided with a clearance opening for avoiding the output gear (420).

9. A multi-functional electric machine according to claim 8, characterized by: The end cover (120) is connected to an upwardly extending connecting cylinder (130). The top end of the connecting cylinder (130) is connected to the planetary disc (410). A rotating sleeve (140) is arranged between the connecting cylinder (130) and the main shell (110).

10. A multi-functional electric machine according to claim 9, characterized by: The bottom side of the output gear (420) is connected with an output joint (440), the output joint (440) protrudes downward from the end cover (120) from the escape port, a sealing sleeve is arranged between the output joint (440) and the end cover (120).

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