CN221042549U - Disk type speed reduction hub motor - Google Patents

Abstract

The utility model relates to the technical field of hub motors, and particularly discloses a disk type speed reduction hub motor, which comprises: the hub is characterized in that an end cover is covered at the top of an inner cavity of the hub, a first gear plate is fixedly arranged at the bottom of the inner cavity of the hub, and driven gears are sleeved outside three driven rotating shafts; the planetary gear speed reducing mechanism comprises an inner gear ring and a driving rotating shaft, wherein the driving rotating shaft is used for driving the driven gear to rotate, the driven gear is meshed with the inner wall of the inner gear ring, an inner cavity of a magnetic yoke is used for placing the permanent magnet disc and the disc type stator winding, the disc type stator winding is used for driving the permanent magnet disc to rotate, and the permanent magnet disc is used for driving the driving rotating shaft to rotate.

Description

Disk type speed reduction hub motor

Technical Field

The utility model relates to the technical field of hub motors, in particular to a disk type speed reduction hub motor.

Background

The wheel hub motor is a motor designed by integrating a power system, a transmission system and a brake system of a vehicle, and is characterized in that a power device and a transmission device are integrated into a wheel hub, so that the mechanical part of the electric vehicle is greatly simplified, the transmission is not required to be carried out through a chain like a vehicle with a middle motor, the transmission efficiency is improved, the wheel is directly driven by the motor, the rotation speed and the torque of the wheel can be directly controlled by a motor controller command, in the traditional motor, a direct-drive motor is adopted, a rotor assembly and the wheel hub of the direct-drive motor are integrated, a stator is arranged in the rotor assembly, and the output torque of a motor body is required to be higher by adopting a direct-drive structure because the output torque of the wheel hub motor is required to be higher.

Along with the development of economic level and technology, the electric wheelchair becomes more and more inconvenient user's of more activities selection, and electric wheelchair has increased motor, battery, controller, and be convenient for operation more and humanized, has manual folding and automatic folding version, and intelligent electric wheelchair back, seatpad, leg hold in the palm etc. can adjust a plurality of angles, and the seat height can be adjusted and make the user can be in same horizontal sight with the person of talker, and function such as supplementary standing still have, and the drive part that electric wheelchair adopted is mostly in wheel hub motor, but the wheel hub motor output torque of current electric wheelchair is not enough leads to electric wheelchair's load capacity to be insufficient.

The technical scheme disclosed by the Chinese patent utility model with reference to the patent number of CN210991266U is that the electric wheelchair comprises a hub assembly and a fixed seat, wherein the hub assembly comprises a hub body and a fixed shaft, a turntable is fixedly arranged on the hub body, the turntable is rotatably arranged at one end of the fixed shaft and further comprises an electromagnetic brake, a mounting cavity is arranged in the fixed seat, the electromagnetic brake is arranged in the mounting cavity, the fixed shaft penetrates through the electromagnetic brake and the fixed seat, the other end of the fixed shaft is fixed on the fixed seat through a locking piece, the electromagnetic brake comprises an electromagnetic brake body and a brake pad matched with the turntable, a coupling hole is arranged in the brake pad, a coupling part matched with the coupling hole is arranged on the turntable, and the coupling hole is sleeved on the coupling part so that the turntable can rotate together with the brake pad. The utility model improves the brake device of the hub motor, applies the electromagnetic brake to the electric wheelchair, improves the brake reliability, improves the safety performance, reduces the manufacturing cost and the weight, has a complex structure and thicker overall thickness, and can not meet the requirement of the light weight of the electric wheelchair, and the technical scheme can not effectively solve the problem of insufficient load capacity of the electric wheelchair caused by insufficient output torque of the hub motor.

Therefore, how to increase the output torque of the hub motor is a major problem that needs to be solved by the current technicians.

Disclosure of utility model

The present utility model has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide a disk-type reduction hub motor.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a disc-type reduction hub motor, comprising:

A hub, a rotating mechanism and a planetary gear reduction mechanism;

The inner cavity of the hub is used for installing the planetary gear reduction mechanism and the rotating mechanism, an end cover is covered on the top of the inner cavity of the hub, a first gear plate is fixedly arranged at the bottom of the inner cavity of the hub, three driven rotating shafts are arranged on the first gear plate, and driven gears are sleeved outside the three driven rotating shafts;

The planetary gear speed reducing mechanism comprises an inner gear ring and a driving rotating shaft, the driving rotating shaft is used for driving the driven gear to rotate, and the driven gear is meshed with the inner wall of the inner gear ring;

The rotating mechanism comprises a magnetic yoke, a permanent magnet disc and a disc-type stator winding, wherein the magnetic yoke is fixedly arranged in an inner cavity of the hub, the inner cavity of the magnetic yoke is used for placing the permanent magnet disc and the disc-type stator winding, electromagnetic torque generated by the disc-type stator winding drives the permanent magnet disc to rotate, and the permanent magnet disc is used for driving the driving rotating shaft to rotate.

Preferably, a first clamping groove is formed in the middle of the inside of the hub, the first clamping groove is clamped with one end of the driving rotating shaft, second clamping grooves are symmetrically formed in the periphery of the outside of the first clamping groove, and the second clamping grooves are used for clamping the driven rotating shaft.

Preferably, the driving rotating shaft is arranged in the middle of the three driven rotating shafts in a penetrating manner, a driving gear is sleeved outside the driving rotating shaft, and the driving gear is meshed with the driven gears.

Preferably, the planetary gear speed reducing mechanism is arranged at the top of the first gear plate, the rotating mechanism is arranged at the bottom of the planetary gear speed reducing mechanism, and the axes of the rotating mechanism and the axis of the planetary gear speed reducing mechanism are all arranged on the same axis.

Preferably, bearings are sleeved at two external ends of the driving rotating shaft, and one end of the driving rotating shaft extends to the inside of the first clamping groove, wherein the bearings at one end of the driving rotating shaft are clamped in the inside of the first clamping groove; the other end is penetrated into the magnetic yoke and fixedly connected with the middle of the permanent magnet disc, and a groove for placing a bearing at the other end of the driving rotating shaft is formed in the bottom side of the outer part of the magnetic yoke.

Preferably, the axis of the permanent magnet disc and the axis of the disc-type stator winding are arranged in the same axis, an opening is formed in the middle of the inside of the permanent magnet disc, and the opening is clamped with the other end of the driving rotating shaft.

Preferably, a mounting clamping groove is formed in the outer portion of the disc-type stator winding, an encoder is clamped in the mounting clamping groove, and the encoder is connected with a control assembly of the wheelchair.

Preferably, a through hole is formed in the middle of the inside of the mounting clamping groove, an axle is rotatably arranged in the through hole, and the axle extends outwards to the outside of the end cover.

Preferably, a sealing ring is sleeved outside the magnetic yoke, one side of the inner gear ring is adjacent to the first gear plate, and a second gear plate is arranged on the other side of the inner gear ring.

Compared with the prior art, the technical scheme provides a disk type speed reduction hub motor: the hub, the rotating mechanism and the planetary gear speed reducing mechanism are arranged; the inner cavity of the hub is used for installing the planetary gear reduction mechanism and the rotating mechanism, an end cover is covered on the top of the inner cavity of the hub, a first gear plate is fixedly arranged at the bottom of the inner cavity of the hub, three driven rotating shafts are arranged on the first gear plate, and driven gears are sleeved outside the three driven rotating shafts; the planetary gear speed reducing mechanism comprises an inner gear ring and a driving rotating shaft, the driving rotating shaft is used for driving the driven gear to rotate, and the driven gear is meshed with the inner wall of the inner gear ring, so that the driven gear can conveniently rotate along the inner wall of the inner gear ring, and when the driven gear rotates, the driven rotation drives the first gear plate to rotate, and then drives the hub to rotate;

The rotating mechanism comprises a magnetic yoke, a permanent magnet disc and a disc-type stator winding, wherein the magnetic yoke is fixedly arranged in an inner cavity of the hub, the permanent magnet disc and the disc-type stator winding are arranged in the inner cavity of the magnetic yoke, the disc-type stator winding is used for driving the permanent magnet disc to rotate, and the permanent magnet disc is used for driving the driving rotating shaft to rotate; the disc type stator winding is enabled to generate a rotating magnetic field, the axial permanent magnet disc is driven to rotate, the permanent magnet disc is connected with the driving rotating shaft, the driving rotating shaft drives the driven gear, and accordingly the driven gear drives the first gear plate when the inner gear ring rotates, the first gear plate is fixedly arranged at the bottom of an inner cavity of the hub, the hub is driven to rotate, the rotating mechanism is compact in structure, the whole structure is light and thin, the power density is effectively improved, the rotating speed is reduced through the structure of the planetary gear speed reducing mechanism, the torque is increased, the overload force is further improved, and the requirements of high torque starting and light weight of the electric vehicle can be met through the structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall external structure of the present utility model.

Fig. 2 is a schematic view of another view of the entire exterior of the present utility model.

Fig. 3 is an exploded schematic view of the overall structure of the present utility model.

Fig. 4 is a schematic structural view of a driving gear and a driven gear according to the present utility model.

Fig. 5 is a schematic view of a yoke structure of the present utility model.

Fig. 6 is a schematic view of the disc stator winding structure of the present utility model.

Fig. 7 is a schematic view of the permanent magnet disc structure of the present utility model.

Fig. 8 is a schematic view of another view angle structure of the yoke of the present utility model.

Fig. 9 is a schematic cross-sectional structure of the present utility model.

The labels in the figures are shown in combination: 1. a hub; 2. a rotating mechanism; 3. a planetary gear reduction mechanism; 10. an end cap; 11. a first gear plate member; 12. a first clamping groove; 13. a second clamping groove; 21. a yoke; 22. a permanent magnet disc; 23. a disc stator winding; 31. a driving rotating shaft; 32. an inner gear ring; 99. a seal ring; 111. a driven rotating shaft; 112. a driven gear; 210. a groove; 221. opening holes; 231. installing a clamping groove; 232. an encoder; 233. a through hole; 234. a wheel axle; 310. a bearing; 311. a drive gear; 321. a second gear plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model. Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present utility model, it should be understood that the terms "thickness," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various components, these information should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first component could also be termed a second component, and, similarly, a second component could also be termed a first component, without departing from the scope of the present utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The following describes the technical scheme of the embodiment of the present utility model in detail with reference to the accompanying drawings.

Referring to fig. 1 to 9, a disc-type reduction hub motor includes: a hub 1, a rotating mechanism 2 and a planetary gear reduction mechanism 3;

The inner cavity of the hub 1 is used for installing the planetary gear reduction mechanism 3 and the rotating mechanism 2, an end cover 10 is covered on the top of the inner cavity of the hub 1, a first gear plate 11 is fixedly arranged at the bottom of the inner cavity of the hub 1, three driven rotating shafts 111 are arranged on the first gear plate 11, and driven gears 112 are sleeved outside the three driven rotating shafts 111;

The planetary gear reduction mechanism 3 comprises an inner gear ring 32 and a driving rotating shaft 31, wherein the driving rotating shaft 31 is used for driving the driven gear 112 to rotate, and the driven gear 112 is meshed with the inner wall of the inner gear ring 32;

The rotating mechanism 2 comprises a magnetic yoke 21, a permanent magnet disc 22 and a disc-type stator winding 23, wherein the magnetic yoke 21 is fixedly arranged in an inner cavity of the hub 1, the inner cavity of the magnetic yoke 21 is used for placing the permanent magnet disc 22 and the disc-type stator winding 23, the disc-type stator winding 23 is used for driving the permanent magnet disc 22 to rotate, and the permanent magnet disc 22 is used for driving the driving rotating shaft 31 to rotate.

In this embodiment, a first clamping groove 12 is provided in the middle of the inside of the hub 1, the first clamping groove 12 is clamped with one end of the driving shaft 31, and second clamping grooves 13 are symmetrically provided around the outside of the first clamping groove 12, and the second clamping grooves 13 are used for clamping the driven shaft 111.

In this embodiment, the driving shaft 31 is disposed between the three driven shafts 111, and a driving gear 311 is sleeved outside the driving shaft 31, and the driving gear 311 is meshed with the driven gear 112.

In this embodiment, the planetary gear reduction mechanism 3 is disposed at the top of the first gear plate 11, the rotation mechanism 2 is disposed at the bottom of the planetary gear reduction mechanism 3, and the axis of the rotation mechanism 2 and the axis of the planetary gear reduction mechanism 3 are all disposed on the same axis.

In this embodiment, bearings 310 are sleeved at both ends of the outside of the driving shaft 31, and one end of the driving shaft 31 extends into the first clamping groove 12, where the bearings 310 at one end of the driving shaft 31 are clamped inside the first clamping groove 12; the other end is inserted into the yoke 21 and fixedly connected with the middle of the permanent magnet disc 22, and a groove 210 for placing a bearing 310 on the other end of the driving rotating shaft 31 is formed on the bottom side of the outside of the yoke 21.

In this embodiment, the axis of the permanent magnet disc 22 and the axis of the disc-shaped stator winding 23 are disposed on the same axis, and an opening 221 is formed in the middle of the inside of the permanent magnet disc 22, and the opening 221 is clamped with the other end of the driving shaft 31.

In this embodiment, a mounting slot 231 is provided outside the disc-type stator winding 23, and an encoder 232 is provided inside the mounting slot 231, wherein the encoder 232 is connected with a control assembly of the wheelchair.

In this embodiment, a through hole 233 is formed in the middle of the inside of the mounting slot 231, an axle 234 is rotatably disposed in the through hole 233, and the axle 234 extends outward to the outside of the end cover 10.

In this embodiment, a sealing ring 99 is sleeved on the outer portion of the yoke 21, one side of the ring gear 32 is adjacent to the first gear plate 11, and a second gear plate 321 is further disposed on the other side of the ring gear 32.

Example 1

In order to realize increasing the transmission ratio and reducing the rotating speed to improve the torque force, the hub motor of the electric wheelchair is ensured to have overload capacity, and the technical scheme comprises the following steps: the hub 1, the rotating mechanism 2 and the planetary gear speed reducing mechanism are fixedly provided with a first gear plate 11 at the bottom of an inner cavity of the hub 1, and three driven rotating shafts 111 are arranged on the first gear plate 11, wherein driven gears 112 are sleeved outside the three driven rotating shafts 111; the rotating mechanism 2 comprises a magnetic yoke 21, a permanent magnet disc 22 and a disc-type stator winding 23, wherein the disc-type stator winding 23 is used for driving the permanent magnet disc 22 to rotate, the permanent magnet disc 22 is used for driving the driving rotating shaft 31 to rotate, the planetary gear reduction mechanism 3 comprises an annular gear 32 and the driving rotating shaft 31, the driving rotating shaft 31 is used for driving the driven gear 112 to rotate, and the driven gear 112 is meshed with the inner wall of the annular gear 32, so that the permanent magnet disc 22 is effectively driven to rotate through the disc-type stator winding 23, and the permanent magnet disc 22 is used for driving the driving rotating shaft 31 to rotate; the disc type stator winding 23 is enabled to generate a rotating magnetic field, the axial permanent magnet disc 22 is driven to rotate, the permanent magnet disc 22 is connected with the driving rotating shaft 31, the driving rotating shaft 31 drives the driven gear 112, so that the driven gear 112 drives the first gear plate 11 while the annular gear 32 rotates, the first gear plate 11 is fixedly arranged at the bottom of the inner cavity of the hub 1, the hub is driven to rotate, the rotating speed is reduced through the structure of the planetary gear reduction mechanism 3, the transmission ratio is increased, the torque is increased, the overload force is further improved, and the whole hub motor structure can meet the large-torque starting effect of the electric vehicle.

It should be noted that, the driving gear 311 is sleeved outside the driving shaft 31, and the driving gear 311 is meshed with the driven gear 112, so as to drive the driven gear 112 to rotate in the process of rotating the driving shaft 31.

It should be noted that, the first clamping groove 12 is disposed in the middle of the inside of the hub 1, and the first clamping groove 12 is clamped with one end of the driving shaft 31, where the second clamping groove 13 is symmetrically disposed around the outside of the first clamping groove 12, and the second clamping groove 13 is used for clamping the driven shaft 111, so that the first clamping groove 12 is convenient for installing the driving shaft 31, and the second clamping groove 13 is convenient for installing the driven shaft 111.

For the above description, it is further required to supplement that bearings 310 are sleeved at both ends of the outside of the driving rotating shaft 31, and one end of the driving rotating shaft 31 extends into the first clamping groove 12, wherein the bearing 310 at one end of the driving rotating shaft 31 is clamped in the first clamping groove 12, so that the first clamping groove 12 limits the driving rotating shaft 31, and meanwhile, one end of the driving rotating shaft 31 can rotate in the bearing 310; the other end is penetrated into the magnetic yoke 21 and fixedly connected with the middle of the permanent magnet disc 22, and the groove 210 for placing the bearing 310 on the other end of the driving rotating shaft 31 is formed on the bottom side of the outer part of the magnetic yoke 21, so that the driving rotating shaft 31 is driven to rotate when the permanent magnet disc 22 rotates in the rotating magnetic field generated by the disc-type stator winding 23, the magnetic yoke 21 is kept motionless, the groove 210 of the magnetic yoke 21 limits the driving rotating shaft 31, and meanwhile, the other end of the driving rotating shaft 31 can rotate in the bearing 310.

Example two

For guaranteeing that rotary mechanism 2 structure frivolous of wheel hub motor prevents that rotary mechanism 2 structure occupation space is too big to cause the problem that wheel hub motor overall thickness greatly influences the installation to appear, this technical scheme includes: through being used for installing planetary gear reduction mechanism 3 and rotary mechanism 2 with the inner chamber of wheel hub 1, make its wheel hub 1 wrap up planetary gear reduction mechanism 3 and rotary mechanism 2, because wheel hub 1's inner chamber top lid is equipped with end cover 10 to play sealed guard action to wheel hub 1's inner chamber through end cover 10, wherein, the inner chamber bottom at wheel hub 1 is fixed to be provided with first gear plate 11, and be provided with three driven shaft 111 on first gear plate 11, the outside of three driven shaft 111 all overlaps and is equipped with driven gear 112.

In view of the above, it should be further noted that the planetary gear reduction mechanism 3 is disposed at the top of the first gear plate 11, and the rotating mechanism 2 is disposed at the bottom of the planetary gear reduction mechanism 3, where the axis of the rotating mechanism 2 and the axis of the planetary gear reduction mechanism 3 are all disposed on the same axis, so that the planetary gear reduction mechanism 3 and the rotating mechanism 2 are axially disposed, and are convenient to be placed in the inner cavity of the hub 1.

In view of the above, it should be further added that the mounting slot 231 is provided at the outside of the disc stator winding 23, the through hole 233 is provided in the middle of the inside of the mounting slot 231, and the wheel axle 234 is rotatably provided at the inside of the through hole 233, wherein the wheel axle 234 extends outwards to the outside of the end cover 10, so that the wheel axle 234 is convenient to install through the wheel axle 234, the wheel axle 234 is convenient to install the wheel hub motor on the electric wheelchair, the encoder 232 is convenient to install through the mounting slot 231, and the wheel axle 234 is convenient to install through the through hole 233 of the mounting slot 231, so that the wheel axle 234 extends to the outside of the end cover 10 to clamp the electric wheelchair, thereby preventing the wheel hub motor from being installed.

Example III

In order to improve the power density and overload capacity of the motor, the technical scheme comprises the following steps: the rotating mechanism 2 comprises a magnet yoke 21, a permanent magnet disc 22 and a disc-type stator winding 23, the magnet yoke 21 is fixedly arranged in an inner cavity of the hub 1, wherein the inner cavity of the magnet yoke 21 is used for placing the permanent magnet disc 22 and the disc-type stator winding 23, the permanent magnet disc 22 is driven to rotate through the disc-type stator winding 23, and the permanent magnet disc 22 is driven to rotate through the permanent magnet disc 22, and because the axis of the permanent magnet disc 22 and the axis of the disc-type stator winding 23 are arranged in the same axis, the permanent magnet disc 22 is arranged at the bottom of the disc-type stator winding 23, an opening 221 is formed in the middle of the inner part of the permanent magnet disc 22, the opening 221 is clamped with the other end of the active rotating shaft 31, the permanent magnet disc 22 is arranged at the bottom of the disc-type stator winding 23, so that the armature winding surface of the permanent magnet disc can be manufactured into pole shoes, and copper bars or cast aluminum are arranged in the pole shoes to play roles of starting and damping, and steady state and dynamic performance are good, and because the built-in rotor magnetic circuit is asymmetric, so that magnetic resistance is generated during running, the power density and overload capacity of the motor are facilitated to be improved.

It should be noted that, the axis of the permanent magnet disc 22 and the axis of the disc-shaped stator winding 23 are arranged on the same axis, and an opening 221 is formed in the middle of the interior of the permanent magnet disc 22, and the opening 221 is clamped with the other end of the driving rotating shaft 31, so that the permanent magnet disc 22 drives the driving rotating shaft 31 to rotate.

Example IV

In order to solve the drive rotational speed and the steering of control wheel hub motor in the operation wheelchair in-process, this technical scheme includes: the rotating mechanism 2 comprises a magnet yoke 21, a permanent magnet disc 22 and a disc-type stator winding 23, wherein the magnet yoke 21 is fixedly arranged in the inner cavity of the hub 1, the permanent magnet disc 22 and the disc-type stator winding 23 are arranged in the inner cavity of the magnet yoke 21, the permanent magnet disc 22 is driven to rotate through the disc-type stator winding 23, and the driving rotating shaft 31 is driven to rotate through the permanent magnet disc 22, wherein a mounting clamping groove 231 is formed in the outer portion of the disc-type stator winding 23, an encoder 232 is clamped in the mounting clamping groove 231, and the encoder 232 is connected with a control assembly of the wheelchair.

It should be noted that, the encoder 232 is a rotary sensor that converts rotary displacement into a series of digital pulse signals, the pulses of the encoder 232 can be used to control angular displacement, if the encoder 232 is combined with a gear bar or a screw, it can also be used to measure linear displacement, the encoder 232 generates an electrical signal and then is processed by a numerical control device CNC, a programmable logic controller PLC, a control system, etc., the technical scheme includes that: the outside of disc stator winding 23 is provided with the installation draw-in groove 231, the inside card of installation draw-in groove 231 is equipped with encoder 232, wherein, encoder 232 is connected with the control assembly of wheelchair.

Example five

In order to solve the problem of faults caused by entering the hub motor in severe working environments such as water and dust, the technical scheme is as follows: the planetary gear speed reducing mechanism 3 and the rotating mechanism 2 are arranged in an inner cavity of the hub 1, and an end cover 10 is covered on the top of the inner cavity of the hub 1, wherein a first gear plate 11 is fixedly arranged at the bottom of the inner cavity of the hub 1, three driven rotating shafts 111 are arranged on the first gear plate 11, and driven gears 112 are sleeved outside the three driven rotating shafts 111; the rotating mechanism 2 comprises a magnetic yoke 21, a permanent magnet disc 22 and a disc type stator winding 23, wherein the magnetic yoke 21 is fixedly arranged in the inner cavity of the hub 1, and the inner cavity of the magnetic yoke 21 is used for placing the permanent magnet disc 22 and the disc type stator winding 23; the space occupied by the whole installation is reduced, and the permanent magnet disc 22 and the disc-type stator winding 23 are protected by the magnetic yoke 21.

For the technical solution provided in the above embodiment, further supplementary explanation is made, the sealing ring 99 is sleeved outside the magnetic yoke 21, and one side of the ring gear 32 is adjacent to the first gear plate 11, and the second gear plate 321 is further disposed on the other side of the ring gear 32, so that the first gear plate 11 and the second gear plate 321 play a role in protecting two sides of the ring gear 32, and prevent excessive dust from entering the ring gear 32.

To sum up, it is further added that the technical solution provided in this embodiment effectively increases the tightness through the sealing ring 99, wherein, the end cover 10 is covered outside the inner cavity of the hub 1 to form a sealed cavity, the top of the magnetic yoke 21 can be provided with a screw hole, the screw hole can be used for fixing the end cover 10 on the magnetic yoke 21, the end cover 10 is fixedly connected with the screw hole on the magnetic yoke 21 through a screw, so that the installation and the disassembly are convenient, and meanwhile, the end cover 10 can be used for protecting the inner components to prevent the water and dust outside the hub from entering the cavity to damage the rotating mechanism and the planetary gear reducer.

The aspects of the present utility model have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required for the present utility model. In addition, it can be understood that the steps in the method of the embodiment of the present utility model may be sequentially adjusted, combined and pruned according to actual needs, and the structure in the apparatus of the embodiment of the present utility model may be combined, divided and pruned according to actual needs.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (9)

1. A disc-type reduction hub motor, comprising:

A hub, a rotating mechanism and a planetary gear reduction mechanism;

The inner cavity of the hub is used for installing the planetary gear reduction mechanism and the rotating mechanism, an end cover is covered on the top of the inner cavity of the hub, a first gear plate is fixedly arranged at the bottom of the inner cavity of the hub, three driven rotating shafts are arranged on the first gear plate, and driven gears are sleeved outside the three driven rotating shafts;

The planetary gear speed reducing mechanism comprises an inner gear ring and a driving rotating shaft, the driving rotating shaft is used for driving the driven gear to rotate, and the driven gear is meshed with the inner wall of the inner gear ring;

The rotating mechanism comprises a magnetic yoke, a permanent magnet disc and a disc-type stator winding, wherein the magnetic yoke is fixedly arranged in an inner cavity of the hub, the inner cavity of the magnetic yoke is used for placing the permanent magnet disc and the disc-type stator winding, electromagnetic torque generated by the disc-type stator winding drives the permanent magnet disc to rotate, and the permanent magnet disc is used for driving the driving rotating shaft to rotate.

2. The disc-type speed reduction hub motor according to claim 1, wherein a first clamping groove is formed in the middle of the inside of the hub, the first clamping groove is clamped with one end of the driving rotating shaft, second clamping grooves are symmetrically formed in the periphery of the outside of the first clamping groove, and the second clamping grooves are used for clamping the driven rotating shaft.

3. The disc-type speed reduction hub motor according to claim 1, wherein the driving rotating shaft is arranged in the middle of three driven rotating shafts in a penetrating manner, a driving gear is sleeved outside the driving rotating shaft, and the driving gear is meshed with the driven gears.

4. The disc-type reduction hub motor according to claim 1, wherein the planetary gear reduction mechanism is disposed at the top of the first gear plate member, the rotation mechanism is disposed at the bottom of the planetary gear reduction mechanism, and the axis of the rotation mechanism and the axis of the planetary gear reduction mechanism are both disposed on the same axis.

5. The disc-type speed reduction hub motor according to claim 2, wherein bearings are sleeved at two external ends of the driving rotating shaft, one end of the driving rotating shaft extends to the inside of the first clamping groove, and the bearing at one end of the driving rotating shaft is clamped in the inside of the first clamping groove; the other end is penetrated into the magnetic yoke and fixedly connected with the middle of the permanent magnet disc, and a groove for placing a bearing at the other end of the driving rotating shaft is formed in the outer part of the magnetic yoke.

6. The disc-type speed reduction hub motor according to claim 1, wherein the axis of the permanent magnet disc and the axis of the disc-type stator winding are arranged in the same axis, an opening is formed in the middle of the inside of the permanent magnet disc, and the opening is clamped with the other end of the driving rotating shaft.

7. The disc-type speed reduction hub motor according to claim 1, wherein a mounting clamping groove is formed in the outer portion of the disc-type stator winding, an encoder is clamped in the mounting clamping groove, and the encoder is connected with a control assembly of the wheelchair.

8. The disc type speed reducing hub motor according to claim 7, wherein a through hole is formed in the middle of the inside of the mounting clamping groove, a wheel shaft is rotatably arranged in the through hole, and the wheel shaft extends outwards to the outside of the end cover.

9. The disc type reduction hub motor according to claim 1, wherein a sealing ring is sleeved outside the magnetic yoke, one side of the inner gear ring is adjacent to the first gear plate, and a second gear plate is arranged on the other side of the inner gear ring.