CN112928857B - Wheel hub motor and car of duplex bearing structure - Google Patents
Wheel hub motor and car of duplex bearing structure Download PDFInfo
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- CN112928857B CN112928857B CN202110216527.8A CN202110216527A CN112928857B CN 112928857 B CN112928857 B CN 112928857B CN 202110216527 A CN202110216527 A CN 202110216527A CN 112928857 B CN112928857 B CN 112928857B
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- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
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- 238000006243 chemical reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of hub motors, in particular to a hub motor with a double-bearing structure, which is used as a direct power device and is arranged on an automobile hub, and the hub is driven to directly rotate, so that a transmission mechanism is omitted, and the transmission efficiency is greatly improved; the permanent magnet tile comprises a support shaft, a first bearing, a second bearing, a front end cover, a stator coil assembly, a lock nut, a permanent magnet tile and a rear end cover, wherein the first bearing is installed in a first bearing groove of the front end cover; the permanent magnet tiles are adhered to the inner side of the rear end cover, the hub motor is a direct-current brushless motor and is connected with the hub of the electric vehicle through the rear end cover, and the end face of the supporting shaft is fixed with a front axle or a rear axle of the electric vehicle.
Description
Technical Field
The invention relates to the technical field of hub motors, in particular to a hub motor with a double-bearing structure and an automobile.
Background
In recent years, the new energy vehicle industry is rapidly developed, the electric vehicle yield is increased year by year, and the wheel hub motor technology is gradually increased along with the development of the electric vehicle technology.
The electric vehicle driven by the hub motor can omit a large number of transmission parts, has light vehicle body weight, high transmission efficiency and simpler vehicle structure, and is beneficial to the arrangement of a battery pack. The hub motor can realize various complex driving modes, and has the characteristic of independent driving of a single wheel, so that the all-time four-wheel drive is very easy to realize on a vehicle driven by the hub motor no matter the wheel is driven forwards. In theory, in-wheel motors are suitable for almost all vehicle types.
Disclosure of Invention
In order to meet the market demand of an electric vehicle, the invention provides a hub motor with a double-bearing structure, which can be arranged on the hub of the electric vehicle and used as a power unit of the electric vehicle to directly provide power for the electric vehicle.
In order to realize the purpose, the invention is realized by adopting the following technical scheme:
a hub motor with a double-bearing structure comprises a support shaft, a first bearing, a second bearing, a front end cover, a stator coil assembly, a permanent magnet tile and a rear end cover, wherein the support shaft is of a stepped shaft structure, the support shaft is provided with a first bearing step, the outer side of the first bearing step is sleeved with an inner ring of the first bearing, the front end cover main body is of a disc structure, a first center hole and a first bearing groove are formed in the center of the front end cover main body, the first center hole and the first bearing groove are concentric and communicated with each other, the support shaft penetrates through the first center hole, the first bearing is installed in the first bearing groove of the front end cover, the outer ring of the first bearing is fixedly connected with the side wall of the first bearing groove, the stator assembly step is arranged on the right side of the first bearing step, the stator coil assembly step is installed on the stator assembly step, the right side of the stator assembly step is provided with a lock nut thread, and the lock nut is matched with the lock nut thread of the support shaft, fixedly locking the first bearing and the stator coil assembly; the right side of the lock nut thread is provided with a second bearing step, the outer side of the second bearing step is sleeved with an inner ring of a second bearing, the rear end cover is in a circular cap shape and is provided with a disc-shaped end part with the diameter equal to that of the front end cover and a cylindrical side wall which is integrally formed with the end part, the center of the end part is provided with a second central hole and a second bearing groove, the second central hole and the second bearing groove are concentric and are communicated with each other, the support shaft penetrates through the second central hole, the second bearing is arranged in the second bearing groove, and the outer ring of the second bearing is fixedly connected with the side wall of the second bearing groove; the front end cover and the rear end cover are connected in a matching way to form an inclusion cavity; and permanent magnetic tiles are adhered to the inner side of the rear end cover.
In a possible technical scheme, the stator coil assembly comprises a wheel-shaped supporting steel frame, a third central hole is formed in the center of the supporting steel frame, the stator assembly penetrates through the third central hole in a stepped mode, multiple layers of silicon steel sheets are pasted on the periphery of the supporting steel frame, and the stator coil is arranged on the silicon steel sheets.
In a possible technical scheme, the permanent magnet tiles are uniformly adhered to the inner wall of the rear end cover, the permanent magnet tiles are isolated by the bakelite plates, the number of the tiles is adapted to the stator coils, and the tiles are timely adjusted according to the power and the torque of the hub motor.
In a possible technical scheme, a flat key groove a is formed in the stator assembly step, a flat key groove B is formed in a position, corresponding to the flat key groove a, of a third center hole of the stator coil assembly, and the flat key is matched with the flat key groove a and the flat key groove B to fix the stator coil assembly on the stator assembly step of the support shaft.
In a possible technical scheme, the supporting shaft is of a hollow structure, a through hole is formed in the shaft body, and a stator coil cable penetrates through the through hole.
In a possible technical scheme, the right side of second bearing ladder sets up to the spline groove, the center department of rear end cover corresponds spline groove department and sets up customization encoder groove, the customization encoder is installed on the spline groove of back shaft, it is fixed that the customization encoder stator passes through the spline and the spline groove matches, the outside of customization encoder stator sets up the customization encoder rotor, the encoder lid links firmly with the customization encoder rotor through bolt C, and encapsulate the customization encoder in customization encoder groove, the encoder lid links firmly with the rear end cover through bolt C simultaneously, the customization encoder rotor links as an organic whole with the rear end cover.
In a possible technical scheme, the hub motor is a direct-current brushless motor, and is powered by a direct-current power supply and electronically commutated.
An automobile incorporating an in-wheel motor of a dual bearing structure according to any one of the preceding claims.
Compared with the prior art, the invention has the beneficial effects that: the hub motor is a direct-current brushless motor, the hub motor is connected with a hub of the electric vehicle through a rear end cover, and the end face of a supporting shaft is fixed with a front axle or a rear axle of the electric vehicle; adopt direct current power supply, electronic commutation, front end housing and rear end cap form an inclusion cavity, are supported by first bearing and second bearing, rotate around the back shaft, and the stator coil is motionless, and the rotor that the end cap is constituteed around the permanent magnetism tile drives rotates, provides power for the electric motor car, and this wheel hub motor installs on automobile wheel hub as direct power device, directly drives the wheel hub and rotates, saves drive mechanism, greatly improves transmission efficiency.
Drawings
FIG. 1 is a layout view of a hub motor;
FIGS. 2(a) and 2(b) are schematic views of an in-wheel motor assembly;
fig. 3(a), 3(b) and 3(c) are schematic views of the support shaft structure;
FIGS. 4(a), 4(b) and 4(c) are schematic views of the front end cap construction;
FIGS. 5(a), 5(b) and 5(c) are schematic views of the rear end cap structure;
FIG. 6 is a stator coil assembly schematic;
FIGS. 7(a) and 7(b) are schematic diagrams of custom encoder structures;
fig. 8(a) and 8(b) are schematic views of the encoder cover structure.
Reference numerals: 1-bolt A; 2-drum braking; 3-supporting the shaft; 3.1-Flat keyway A; 3.2-through hole; 3.3-spline grooves; 3.4-shoulder; 3.5-first bearing step; 3.6-stator assembly step; 3.7-locking female threads; 3.8-second bearing step; 3.9-bolt hole A; 3.10-bolt hole B; 4-a first bearing; 5-front end cover; 5.1-brake drum; 5.2-first bearing groove; 5.3-bolt hole C; 6-bolt B; 7-a flat bond; 8-a stator coil assembly; 8.1-Flat keyway B; 8.2-supporting the steel frame; 8.3-coil; 8.4-silicon steel sheet; 9-locking nut; 10-a second bearing; 11-permanent magnetic tiles; 12-rear end cap; 12.1-custom encoder slots; 12.2-bolt hole D; 12.3-second bearing groove; 12.4-stepped bore A; 12.5-bolt hole E; 13-a custom encoder; 13.1-splines; 13.2-bolt hole F; 13.3-custom encoder rotor; 13.4-custom encoder stator; 14-encoder cap; 14.1-boss; 14.2-stepped bore B; 14.3-stepped bore C; 15-bolt C; 16-a hub; 17-a screw cap; 18-a tyre; 19, a pull wire hole; and 20-a brake oil port.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "radial," "axial," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 and 2, the hub motor with a dual bearing structure of the present invention includes a support shaft 3, a first bearing 4, a second bearing 10, a front cover 5, a stator coil assembly 8, a customized encoder 13, permanent magnetic tiles 11, and a rear cover 12, wherein the support shaft 3 is a stepped shaft structure, the support shaft 3 is provided with a first bearing step 3.5, an outer side of the first bearing step 3.5 is sleeved with an inner ring of the first bearing 4, the front cover 5 is a disc structure, a first center hole and a first bearing groove 5.2 are formed at a center of the front cover 5, the first center hole and the first bearing groove 5.2 are concentric and are communicated with each other, the support shaft 3 penetrates through the first center hole, the first bearing 4 is installed in the first bearing groove 5.2 of the front cover 5, an outer ring of the first bearing 4 is fixedly connected with a side wall of the first bearing groove 5.2, a stator assembly step 3.6 is arranged at a right side of the first bearing step 3.5, the stator coil assembly 8 is installed on the stator assembly step 3.6, the right side of the stator assembly step 3.6 is provided with a lock nut thread 3.7, and a lock nut 9 is matched with the lock nut thread 3.7 of the support shaft 3 to fixedly lock the first bearing 4 and the stator coil assembly 8; the right side of the lock nut thread 3.7 is provided with a second bearing step 3.8, the outer side of the second bearing step 3.8 is sleeved with an inner ring of a second bearing 10, the rear end cover 12 is in a circular cap shape and is provided with a disc-shaped end part with the diameter equal to that of the front end cover 5 and a cylindrical side wall which is integrally formed with the end part, the center of the end part is provided with a second central hole and a second bearing groove 12.3, the second central hole and the second bearing groove 12.3 are concentric and mutually communicated, the support shaft 3 penetrates through the second central hole, the second bearing 10 is arranged in the second bearing groove 12.3, and the outer ring of the second bearing 10 is fixedly connected with the side wall of the second bearing groove 12.3; the front end cover 5 and the rear end cover 12 are connected in a matching way to form an inclusion cavity; the permanent magnet tiles 11 are adhered to the inner side of the rear end cover 12.
The hub motor in the invention is a direct current brushless motor, the direct current brushless motor directly uses an electronic commutator without using a commutating brush of a mechanical structure, as shown in figure 2, a front end cover 5 and a rear end cover 12 are fixedly connected to form a hub motor rotor, the hub motor is connected with an electric vehicle hub 16 through a step hole A reserved on the rear end cover 12 and is screwed and fixed by a bolt cap 17, the end surface of a supporting shaft is fixed with a front axle or a rear axle of the electric vehicle, a direct current power supply is adopted for supplying power, the electronic commutation is realized, a stator coil is not moved, and a permanent magnet tile drives the rotor consisting of the front end cover and the rear end cover to rotate around the supporting shaft 3 by virtue of a first bearing 4 and a second bearing 10, so as to directly provide power for the electric vehicle.
The hub motor in the invention adopts the direct-current brushless motor, not only maintains the good speed regulation performance of the traditional direct-current motor, but also has the advantages of no sliding contact and commutation spark, high reliability, long service life, low noise and the like, the running efficiency, low-speed torque, rotating speed precision and the like of the hub motor are better than those of a frequency converter of any control technology, and because the brushless direct-current motor runs in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started in a heavy load under the frequency conversion speed regulation, and oscillation and desynchronization can not be generated when the load is suddenly changed; the hub motor provided by the invention is free of a mechanical commutator, adopts a totally enclosed structure, prevents dust from entering the motor, and has high reliability.
As a specific embodiment of the present invention, as shown in fig. 6, the stator coil assembly 8 includes a wheel-shaped supporting steel frame 8.2, a third central hole is disposed at the center of the supporting steel frame 8.2, a stator assembly step 3.6 penetrates through the third central hole, multiple layers of silicon steel sheets 8.4 are adhered to the outer periphery of the supporting steel frame 8.2, and the stator coil 8.3 is disposed on the silicon steel sheets 8.4.
As a specific implementation mode of the invention, the permanent magnet tiles 11 are uniformly adhered to the inner wall of the rear end cover 12, the permanent magnet tiles 11 are isolated by bakelite plates, the number of the tiles is adapted to the stator coil 8.3, and the tiles are timely adjusted according to the power and the torque of the hub motor.
As shown in fig. 3, the support shaft 3 is of a stepped shaft structure from left to right, a bolt hole B3.10 for fixedly connecting a front axle or a rear axle of the electric vehicle is arranged on a left end face of the support shaft, a flat key groove a3.1 is arranged on the stator assembly step 3.6, a flat key groove B8.1 is arranged at a position, corresponding to the flat key groove a3.1, of a third center hole of the stator coil assembly 8, two ends of the flat key 7 are respectively matched with the flat key groove a3.1 and the flat key groove B8.1, and the stator coil assembly 8 is fixed on the stator assembly step 3.6 of the support shaft 3.
The supporting shaft 3 is of a hollow structure, a through hole 3.2 is formed in the shaft body, a stator coil cable penetrates through the through hole 3.2 and is led out from the end face of the supporting shaft 3 to be connected with a controller and a power supply.
The right side of the second bearing step 3.8 is provided with a spline groove 3.3, the center of the rear end cover 12 corresponding to the spline groove 3.3 is provided with a custom encoder groove 12.1, the custom encoder 13 is installed on the spline groove 3.3 of the support shaft 3, the custom encoder stator 13.4 is matched and fixed with the spline groove 3.3 through the spline 13.1, the outer side of the custom encoder stator 13.4 is provided with a custom encoder rotor 13.3, the encoder cover 14 is fixedly connected with the custom encoder rotor 13.3 through a bolt C15 and is packaged in the custom encoder groove 12.1, the encoder cover 14 is fixedly connected with the rear end cover 12 through a bolt C15, and the custom encoder rotor 13.3 and the rear end cover 12 are connected into a whole; the brushless direct current motor is electronically commutated, and to enable the brushless direct current motor to rotate, the stator needs to be electrified according to a certain sequence, so that the position of the rotor needs to be known so as to electrify the corresponding stator coil according to an electrifying sequence; the custom encoder stator 13.4 and the custom encoder rotor 13.3 rotate relatively, and the rotation angle and the rotation speed of the hub motor are recorded; the customized encoder rotor 13.3 and the permanent magnet tiles 11 are relatively static, the rotation angle of the customized encoder 13 is matched with the positions of the permanent magnet tiles 11, the position information of the permanent magnet tiles 11 is monitored and transmitted to the hub motor controller, and the controller sends a current control signal to the electronic commutator to drive the motor to rotate; the custom encoder 13 may also record the rotational speed and number of turns of the hub motor to provide speed and mileage information to the host computer.
As shown in fig. 1 and 2, a convex shoulder 3.4 is arranged on the left side of a first bearing step 3.5 of a support shaft 3, a drum brake 2 is arranged on the outer side of the convex shoulder 3.4, a bolt hole a3.9 is axially arranged on the convex shoulder 3.4, the inner side surface of the drum brake 2 is fixedly connected with the convex shoulder 3.4 of the support shaft 3 through the bolt hole a3.9 by using a bolt a1, a brake drum 5.1 is processed on one side of a front cover 5, which is deviated from the convex shoulder 3.4, and the drum brake 2 is matched with the brake drum 5.1 to provide a brake for a hub motor; the drum brake 2 is provided with a pull wire hole 19 and a brake oil port 20.
Fig. 4 is a schematic shape diagram of the front end cover 5, the front end cover 5 is a circular disk shape overall, a first bearing groove 5.2 and an axial first central hole communicated with the first bearing groove 5.2 are reserved in the center of one side of the circular disk, and bolt holes C5.3 are reserved in the edge of the front end cover 5 for placing bolts B6 for fixing the front end cover 5 and the rear end cover 12.
Fig. 5 is a schematic diagram of the shape of the rear end cap 12, the rear end cap 12 is provided with a disc-shaped bottom surface having the same diameter as the front end cap 3 and a vertical cylindrical side surface integrally formed with the bottom surface, a second bearing groove 12.3 and an axial second central hole communicated with the second bearing groove 12.3 are reserved in the center of the disc-shaped bottom surface, and the second bearing groove 12.3 is used for mounting the second bearing 10; the right side of the second center hole is a custom encoder groove 12.1 for mounting a custom encoder 13, bolt holes D12.2 are formed in the edge of the custom encoder groove 12.1 and used for connecting bolts C15, and stepped holes A12.4 which are uniformly distributed are reserved in the disc-shaped bottom surface and used for placing bolts for fixing the rear end cover 12 and the hub; a bolt hole E12.5 is reserved at the connecting position of the cylindrical side surface and the front end cover 5 and used for placing a bolt B6 for fixing the front end cover 5 and the rear end cover 12.
Fig. 7a and 7b are schematic structural diagrams of a custom encoder, an axial center inner wall of the custom encoder 13 is a spline 13.1 matched with the spline groove 3.3, a custom encoder stator 13.4 is fixed with the spline groove 3.3 through the spline 13.1 in a matching manner, a cable of the custom encoder 13 is threaded through one end of the spline side and threaded through the other end face, a custom encoder rotor 13.3 is installed on the outer side of the custom encoder stator 13.4, bolt holes F13.2 are uniformly arranged in the circumferential direction of the custom encoder rotor 13.3, and the encoder cover 14 is fixedly connected with the bolt holes F13.2 on the custom encoder rotor 13.3 through bolts C15.
Fig. 8a and 8B are schematic structural diagrams of the encoder cover, a boss 14.1 is arranged on one side of the encoder cover 14, which is biased to the customized encoder, the boss protrudes to abut against the encoder and plays a role in fixing, a stepped hole B14.2 used for being connected with a bolt C15 is arranged on the encoder cover 14, and a stepped hole C14.3 used for fixing the encoder cover and the hub is also arranged.
The electric vehicle driven by the hub motor can omit a large number of transmission parts, has light vehicle body weight, high transmission efficiency and simpler vehicle structure, and is beneficial to the arrangement of the battery pack. The hub motor can realize various complex driving modes, and has the characteristic of independent driving of a single wheel, so that the all-time four-wheel drive is very easy to realize on a vehicle driven by the hub motor no matter the wheel is driven forwards. In theory, in-wheel motors are suitable for almost all vehicle types.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (3)
1. The hub motor with the double-bearing structure is characterized by comprising a support shaft (3), a first bearing (4), a second bearing (10), a front end cover (5), a stator coil assembly (8), permanent magnet tiles (11) and a rear end cover (12), wherein the support shaft (3) is of a stepped shaft structure, the support shaft (3) is provided with a first bearing step (3.5), the outer side of the first bearing step (3.5) is sleeved with an inner ring of the first bearing (4), the main body of the front end cover (5) is of a disc structure, a first central hole and a first bearing groove (5.2) are formed in the center of the main body, the first central hole and the first bearing groove (5.2) are concentric and are communicated with each other, the support shaft (3) penetrates through the first central hole, the first bearing (4) is installed in the first bearing groove (5.2) of the front end cover (5), the outer ring of the first bearing (4) is fixedly connected with the side wall of the first bearing groove (5.2), the stator assembly ladder (3.6) is arranged on the right side of the first bearing ladder (3.5), the stator coil assembly (8) is installed on the stator assembly ladder (3.6), the lock nut threads (3.7) are arranged on the right side of the stator assembly ladder (3.6), the lock nut (9) is matched with the lock nut threads (3.7) of the support shaft (3), and the first bearing (4) and the stator coil assembly (8) are fixedly locked; the right side of the lock nut thread (3.7) is provided with a second bearing step (3.8), and the diameter of the second bearing step (3.8) is smaller than that of the first bearing step (3.5); the outer side of the second bearing ladder (3.8) is sleeved with an inner ring of a second bearing (10), the rear end cover (12) is in a circular cap shape and provided with a disc-shaped end part with the diameter equal to that of the front end cover (5) and a cylindrical side wall integrally formed with the end part, a second central hole and a second bearing groove (12.3) are formed in the center of the end part, the second central hole and the second bearing groove (12.3) are concentric and communicated with each other, the support shaft (3) penetrates through the second central hole, the second bearing (10) is installed in the second bearing groove (12.3), and an outer ring of the second bearing (10) is fixedly connected with the side wall of the second bearing groove (12.3); the front end cover (5) and the rear end cover (12) are connected in a matching way to form an inclusion cavity; the inner side of the rear end cover (12) is stuck with a permanent magnet tile (11); the stator coil assembly (8) comprises a wheel-shaped supporting steel frame (8.2), a third central hole is formed in the center of the supporting steel frame (8.2), the stator assembly steps (3.6) penetrate through the third central hole, multiple layers of silicon steel sheets (8.4) are adhered to the periphery of the supporting steel frame (8.2), and the stator coil (8.3) is arranged on the silicon steel sheets (8.4); a flat key groove A (3.1) is formed in the stator assembly step (3.6), a flat key groove B (8.1) is formed in a position, corresponding to the flat key groove A (3.1), of a third center hole of the stator coil assembly (8), a flat key (7) is matched with the flat key groove A (3.1) and the flat key groove B (8.1), and the stator coil assembly (8) is fixed on the stator assembly step (3.6) of the supporting shaft (3); the permanent magnet tiles (11) are uniformly adhered to the inner wall of the rear end cover (12), the permanent magnet tiles (11) are isolated by the bakelite plate, the number of the tiles is adapted to the number of the stator coils (8.3), and the tiles are adjusted in time according to the power and the torque of the hub motor; the right side of the second bearing ladder (3.8) is provided with a spline groove (3.3), the center of the rear end cover (12) corresponding to the spline groove (3.3) is provided with a customized encoder groove (12.1), a customized encoder (13) is installed on the spline groove (3.3) of the support shaft (3), a customized encoder stator (13.4) is matched and fixed with the spline groove (3.3) through the spline (13.1), the outer side of the customized encoder stator (13.4) is provided with a customized encoder rotor (13.3), an encoder cover (14) is fixedly connected with the customized encoder rotor (13.3) through a bolt C (15), the customized encoder (13) is packaged in the customized encoder groove (12.1), meanwhile, the encoder cover (14) is fixedly connected with the rear end cover (12) through the bolt C (15), and the customized encoder rotor (13.3) is connected with the rear end cover (12) into a whole; a convex shoulder (3.4) is arranged on the left side of the support shaft (3) positioned on the first bearing step (3.5), a drum brake (2) is installed on the outer side of the convex shoulder (3.4), a brake drum (5.1) is machined on one side, deviating from the convex shoulder 3.4, of the front cover (5), and the drum brake (2) is matched with the brake drum (5.1) to provide braking for a hub motor; the drum brake (2) is provided with a pull wire hole (19) and a brake oil port (20); the hub motor is a direct current brushless motor, adopts a direct current power supply for power supply, and is electronically commutated.
2. A hub motor with a double bearing structure according to claim 1, wherein the supporting shaft (3) is hollow, a through hole (3.2) is formed in the shaft body, and a stator coil cable is inserted through the through hole (3.2).
3. An automobile characterized in that an in-wheel motor of a double bearing structure according to any one of claims 1-2 is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110216527.8A CN112928857B (en) | 2021-02-26 | 2021-02-26 | Wheel hub motor and car of duplex bearing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110216527.8A CN112928857B (en) | 2021-02-26 | 2021-02-26 | Wheel hub motor and car of duplex bearing structure |
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| Publication Number | Publication Date |
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| CN112928857A CN112928857A (en) | 2021-06-08 |
| CN112928857B true CN112928857B (en) | 2021-11-30 |
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| CN202110216527.8A Active CN112928857B (en) | 2021-02-26 | 2021-02-26 | Wheel hub motor and car of duplex bearing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7471026B2 (en) * | 2006-03-13 | 2008-12-30 | Isca Innovatons, Llc | Brushless electric motor |
| CN201490802U (en) * | 2009-08-25 | 2010-05-26 | 朱明忠 | A kind of direct-current electric motor and the front-drive two-wheel power device driven by it |
| CN105656243B (en) * | 2016-04-08 | 2023-06-30 | 汉海信息技术(上海)有限公司 | Motor, motor system and charging and braking method |
| CN207819692U (en) * | 2018-01-31 | 2018-09-04 | 东昌电机(深圳)有限公司 | A kind of servo wheel hub motor |
| CN110091704B (en) * | 2019-06-05 | 2025-01-07 | 吉林大学 | Highly integrated inner rotor hub motor two-speed transmission system and electric vehicle |
| CN210958067U (en) * | 2019-12-24 | 2020-07-07 | 无锡豫玛动力科技有限公司 | High-precision outer rotor magnetic coding sensor motor |
| CN211606327U (en) * | 2020-04-13 | 2020-09-29 | 深圳市时代方舟智能科技有限公司 | Magnetic encoding servo controller and hub motor integrated structure |
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2021
- 2021-02-26 CN CN202110216527.8A patent/CN112928857B/en active Active
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| CN112928857A (en) | 2021-06-08 |
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