CN208046395U - Wheel hub motor, wheel and mobile device - Google Patents
Wheel hub motor, wheel and mobile device Download PDFInfo
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- CN208046395U CN208046395U CN201820182714.2U CN201820182714U CN208046395U CN 208046395 U CN208046395 U CN 208046395U CN 201820182714 U CN201820182714 U CN 201820182714U CN 208046395 U CN208046395 U CN 208046395U
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- wheel hub
- motor shaft
- wire guide
- motor
- hub motor
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Abstract
A kind of wheel hub motor, wheel and the mobile device that the utility model embodiment provides, wherein wheel hub motor includes wheel hub cover, motor shaft and magnetic coder, and magnet is fixedly connected on wheel hub cover；When wheel hub motor works, motor shaft is relatively rotated with wheel hub cover；Magnetic coder is fixedly connected on the one end of motor shaft close to wheel hub cover, and magnetic coder is coaxially disposed with magnet；At least two wire guides and at least one isolation solid-section are provided on motor shaft, the arbitrary neighborhood of tactic at least two wire guide is provided with isolation solid-section between the two, and the conducting wire of magnetic coder is connected up by least two wire guides and at least one isolation solid-section in motor shaft.
Description
Technical field
The utility model embodiment is related to a kind of technical field of motors more particularly to wheel hub motor, wheel and mobile dress
It sets.
Background technology
In general, the speed control system of robot is mostly servo servomechanism, the system generally comprise common motor,
Retarder, photoelectric encoder etc., are tested the speed by photoelectric encoder, the torque of motor are improved by retarder, to carry out
Rotating speed controls.But the cost of retarder is very high, causes the cost of common servo servomechanism very high.
And with the development of the industries such as balance car, electric vehicle, wheel hub motor is applied generally, and has been particularly applied to machine
The industries such as people.Wheel hub motor is a kind of outer rotor synchronous motor, itself has the characteristic of large torque, without using retarder,
And wheel hub motor itself is of simple structure and low cost, so that the wheel hub motor cost with servomechanism is relatively low.
But since there is no accurate speed measuring devices for wheel hub motor itself, cause the tachometric survey of wheel hub motor not smart enough
Really, it is not high enough to further result in control accuracy；Due also to the electricity that the architectural difference of the motors such as wheel hub motor and motor is larger, common
Machine is that motor shaft is rotor, is stator with the winding of motor axis connection etc.；And the motor shaft of wheel hub motor is stator, with motor shaft
The wheel hub of cooperation is rotor, and wheel hub motor causes on common motor to having higher requirement in terms of leakproofness for testing the speed
Photoelectric encoder be not suitable for wheel hub motor.
Utility model content
In view of this, the utility model embodiment is designed to provide a kind of wheel hub motor, wheel and mobile device,
It tests the speed to solve the problems, such as that wheel hub motor in the prior art cannot be realized in the case where ensureing leakproofness.
The utility model embodiment provides a kind of wheel hub motor comprising：Wheel hub cover is fixedly connected on the wheel hub cover
Magnet；Motor shaft, when wheel hub motor works, the motor shaft is relatively rotated with the wheel hub cover；Magnetic coder, the magnetic coding
Device is fixedly connected on the motor shaft close to one end of the wheel hub cover, and the magnetic coder is coaxially disposed with the magnet；
At least two wire guides and at least one isolation solid-section are provided on the motor shaft, tactic described at least two lead
The arbitrary neighborhood of string holes is provided with the isolation solid-section between the two, and the conducting wire of the magnetic coder passes through at least two conducting wires
Hole and at least one isolation solid-section are connected up in the motor shaft.
Optionally, in the utility model any embodiment, at least two wire guide includes the first wire guide and the
Two wire guides, first wire guide include the first cavity and the first lead segments, second wire guide include the second cavity and
Second lead segments, the isolation solid-section are arranged between first lead segments and second lead segments；The magnetic coding
The conducting wire of device passes through first cavity to enter the import of first lead segments, and the electricity is pierced by by first lead segments
Then arbor penetrates the motor shaft by second lead segments, into second cavity, and it is empty by described second
Chamber is pierced by the motor shaft.
Optionally, in the utility model any embodiment, the wheel hub motor further includes circuit board, and the circuit board is fixed
It is connected on the motor shaft, the magnetic coder is fixed on the circuit board.
Optionally, in the utility model any embodiment, it is arranged fluted on the motor shaft, circuit board setting exists
In the groove.
Optionally, in the utility model any embodiment, the shape adaptation of the shape of the groove and the circuit board.
Optionally, in the utility model any embodiment, the wheel hub cover is fixedly connected with end cap, and the magnet insertion is simultaneously
It is fixed on the end cap.
Optionally, in the utility model any embodiment, the lateral wall of the motor shaft is provided with metallic channel, the conducting wire
Slot connects the outlet of one of two neighboring wire guide and the import of another wire guide, the conducting wire are pierced by two neighboring lead
Behind the outlet of one of string holes, by the metallic channel on the outer wall for being located at the motor shaft, then another wire guide is penetrated
Import.
Optionally, in the utility model any embodiment, the conducting wire of the magnetic coder is connect with electric machine speed regulation controller.
The utility model embodiment also provides a kind of wheel comprising wheel hub motor as described above.
The utility model embodiment also provides a kind of mobile device comprising wheel as described above.
By above technical scheme as it can be seen that wheel hub motor provided by the utility model, by the way that magnetic coder and its mating is arranged
Magnet, can accurately measure the rotating speed of wheel hub motor；In addition, the cost of magnetic coder is relatively low, and magnetic coder and magnet
Set-up mode it is simple, conveniently, the cost of wheel hub motor can't be greatly increased；Pass through the setting sequence on motor shaft simultaneously
It is provided with isolation solid-section between at least two wire guides of arrangement and two wire guides of arbitrary neighborhood, it can be easily right
At least two wire guides are sealed processing, thereby may be ensured that wheel hub motor leakproofness.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is that some embodiments described in the utility model embodiment for those of ordinary skill in the art can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is a kind of explosive view for wheel that the utility model embodiment provides；
Fig. 2 is a kind of sectional view for motor shaft that the utility model embodiment provides；
Fig. 3 is a kind of overlooking structure diagram for motor shaft that the utility model embodiment provides；
Fig. 4 is a kind of dimensional structure diagram for motor shaft that the utility model embodiment provides；
Fig. 5 is a kind of structural schematic diagram for end cap that the utility model embodiment provides.
Reference sign：
11, wheel hub cover；12, motor shaft；121, solid-section is isolated；122, groove；13, magnetic coder；14, the first conducting wire
Hole；141, the first cavity；142, the first lead segments；15, the second wire guide；151, the second cavity；152, the second lead segments；16,
Metallic channel；17, circuit board；18, end cap；181, lower concave part.
Specific implementation mode
Certainly, implement any technical solution of the utility model embodiment it is not absolutely required to and meanwhile reach above all
Advantage.
In order to make those skilled in the art more fully understand the technical scheme in the embodiment of the utility model, below in conjunction with this
Attached drawing in utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, shows
So, described embodiment is only the utility model embodiment a part of the embodiment, instead of all the embodiments.Based on this reality
The every other embodiment obtained with the embodiment in new embodiment, those of ordinary skill in the art should all belong to this
The range of utility model embodiment protection.
Further illustrate that the utility model embodiment implements with reference to the utility model embodiment attached drawing.
A kind of wheel hub motor that the utility model embodiment provides, as shown in Figs 1-4, wheel hub motor includes：Wheel hub cover 11,
Motor shaft 12 and magnetic coder 13 are fixedly connected with magnet (not shown) on wheel hub cover 11；When wheel hub motor works, motor
Axis 12 is relatively rotated with wheel hub cover 11；Magnetic coder 13 is fixedly connected on motor shaft 12 close to one end of the wheel hub cover, and magnetic
Encoder 13 is coaxially disposed with magnet；At least two wire guides and at least one isolation solid-section are provided on the motor shaft,
The arbitrary neighborhood of tactic at least two wire guide is provided with the isolation solid-section, the magnetic coding between the two
The conducting wire of device is connected up by least two wire guides and at least one isolation solid-section in the motor shaft.
Wheel hub motor provided by the utility model can be measured accurately by the way that magnetic coder and its mating magnet is arranged
The rotating speed of wheel hub motor；In addition, the cost of magnetic coder is relatively low, and the set-up mode of magnetic coder and magnet is simply, conveniently,
The cost of wheel hub motor can't be greatly increased；Simultaneously by the way that tactic at least two wire guide is arranged on motor shaft
And it is provided with isolation solid-section between two wire guides of arbitrary neighborhood, easily at least two wire guides can be carried out close
Envelope processing, thereby may be ensured that wheel hub motor leakproofness.
In the present embodiment, wheel hub cover 11 is connect with the wheel hub of wheel hub motor, when wheel hub motor works, the wheel hub of wheel hub motor
Lid 11 is rotated relative to motor shaft 12, i.e., wheel hub is the rotor of wheel hub motor, and wheel hub cover 11 is rotated synchronously with wheel hub, motor shaft 12
It is connect with the stator of wheel hub motor.
In the present embodiment, magnetic coder 13 is fixedly connected with motor shaft 12 so that the fortune of magnetic coder 13 and motor shaft 12
Dynamic is synchronous；Magnet is fixedly connected with wheel hub cover 11 so that magnet is synchronous with the movement of wheel hub cover 11.Wheel hub motor work
When making, the rotation between magnetic coder 13 and magnet is the first rotation, between the motor shaft 12 and wheel hub cover 11 of wheel hub motor
Rotation be second rotation, then this first rotation and second rotate be synchronous.
Magnetic coder 13 may include the structures such as magnetoresistive sensor probe, signal processing circuit, and when magnet rotates, magnetic passes
The variation in magnetic field caused by sensor probe rotates magnet is converted into the variation of resistance, then under the action of applying electrical potential,
It converts the variation of resistance to the variation of voltage, obtains analog electrical signal, analog electrical signal can pass through signal processing electricity
Road is converted into digital signal, so that it is determined that accurate rotating speed.Magnet in the utility model can be permanent magnet, electromagnet and
The similar component that can generate magnetic field.
Magnetic coder is fixedly connected on motor shaft 12 close to one end of wheel hub cover 11, and magnetic coder can be allow accurate
Ground detects the changes of magnetic field of magnet, magnetic coder 13 and magnet coaxial arrangement, and magnetic coder 13 can be made accurately to examine
Rotating speed of the magnet relative to magnetic coder 13 is measured, and then wheel hub (the i.e. wheel hub motor of wheel hub motor can be accurately detected out
Rotor) relative to wheel hub motor stator rotating speed, to which the rotating speed of wheel hub motor be precisely determined.
After increasing magnetic coder 13, need to arrange cabling space for the conducting wire of magnetic coder 13, due to wheel hub motor pair
Seal aspect has higher requirement so that when being the traverse design cabling space of magnetic coder 13, needs to meet wheel hub motor
Seal request.
The conducting wire of magnetic coder 13 can be worn by wire guide (not shown in figure 1) from motor shaft 12 in the present embodiment
Go out, then motor shaft 12 is penetrated by another wire guide, in actual use, the isolation solid-section being located between two wire guides,
It is non-hollow structure that can make motor shaft 12, so as to easily be sealed processing to two wire guides, such as in wire guide
Increase closeouts etc. at import or export, to ensure that wheel hub motor leakproofness.
Preferably, the utility model provides a kind of mode that wire guide is arranged and solid-section is isolated, specific such as Fig. 2, Fig. 3
Shown, at least two wire guide includes the first wire guide 14 and the second wire guide 15, the first wire guide 14 and second
The axis of wire guide 15 is parallel, and the first wire guide 14 includes the first cavity 141 and the first lead segments 142, and described second leads
String holes 15 includes the second cavity 151 and the second lead segments 152, and the isolation solid-section 121 is arranged in first lead segments 142
Between second lead segments 152.
The conducting wire of magnetic coder 13 passes through the first cavity 141 to enter the import of the first lead segments 142, passes through the first lead segments
142 are pierced by motor shaft 12, and then the conducting wire of the magnetic coder penetrates motor shaft 12 by the second lead segments 152, into second
In cavity 151, and motor shaft 12 is pierced by by the second cavity 151.First cavity 141 is not connected to directly with the second cavity 151, is made
The path that must be leaked is more complicated, reduces the possibility of leakage, further increases the leakproofness of wheel hub motor, and then can be with
Make wheel hub motor more efficiently waterproof and dustproof, anti-aging etc..
Certainly, in other realization methods of the utility model, the axis of the first wire guide 14 and the second wire guide 15
Can not be it is parallel, as long as the first wire guide 14 can make conducting wire be pierced by motor shaft, as long as and the second wire guide 15
Conducting wire can be made to penetrate motor shaft.
Certainly, wire guide can also include three or three or more, and the present embodiment is herein without limiting.
For example, on the basis of the above embodiments, the privates hole that wire guide can also include, solid-section, which is isolated, includes
First isolation solid-section, the second isolation solid-section.
Privates hole is arranged between the first wire guide and the second wire guide, the first wire guide and privates hole it
Between be provided with the first isolation solid-section, second is provided between privates hole and the second wire guide, solid-section is isolated.
The conducting wire of magnetic coder 13 can be connected up since the side of close wheel hub cover on motor shaft, be led first by first
String holes is pierced by motor shaft 12, then penetrates motor shaft 12 by privates hole, and motor shaft is sealed in finally by the second wire guide.It is logical
Wire guide of the setting more than three is crossed, the mode of wiring can be made more diversified, to increase the general of wheel hub motor
Property.
It also should be noted that the wire guide in the utility model any embodiment can also be multiplexed and make other structures
Wire guide；The structure that solid-section can be an entirety is isolated, or the structure that multiple small structures are composed, only
Want it that two adjacent wire guides can be isolated, the utility model is herein without limiting.
Further, in this embodiment the lateral wall of motor shaft 12 is provided with metallic channel 16, metallic channel 16 is two neighboring to lead
The outlet of one of string holes and the import of another wire guide, the conducting wire are pierced by going out for one of two neighboring wire guide
After mouthful, by the metallic channel on the outer wall for being located at the motor shaft, then the import of another wire guide is penetrated.
Specifically, as shown in figure 3, metallic channel 16 connect above-mentioned first wire guide 14 outlet and the second wire guide 15 into
Mouthful, conducting wire by metallic channel 16 on the outer wall for being located at motor shaft 12, to facilitate setting magnetic coder 13 conducting wire.
Specifically, when the conductor wiring of magnetic coder, conducting wire enters from the right side in Fig. 2 in the first cavity 141, and passes through
The first wire guide 14 being connected to the first cavity 141 is pierced by from motor shaft 12, later by metallic channel 16 around being located at motor shaft
On, then penetrate in motor shaft from one end of the second wire guide 15, and it is pierced by electricity along the opening in left side in figure of the second cavity 151
Arbor.
Preferably, wheel hub motor can also include circuit board, and circuit board is fixedly connected on motor shaft, and magnetic coder is fixed
Setting is on circuit boards.Specifically, for example above-mentioned magnetoresistive sensor probe of the various components of magnetic coder, signal processing circuit
Deng, can integrate on circuit boards, and by circuit board realize with conducting wire realize be electrically connected.
Further, fluted 122 are arranged on motor shaft, circuit board is arranged in groove 122 can be by ensureing groove
122 positional precision on motor shaft, it is ensured that the positional precision of circuit board, and then ensure that the rotating speed that magnetic coder measures
Precision.
In the present embodiment, the shape of groove 122 and the shape adaptation of circuit board, i.e. groove 122 accomplish profiling with circuit board,
When to which circuit board is arranged by groove 122, the positional precision of circuit board may further ensure that.
Preferably, as shown in Figs 1-4, magnetic coder 13 is arranged by circuit board 17 in one end of motor shaft 12, magnet (figure
In be not shown) be arranged in the same side (i.e. right side in Fig. 1-4) of wheel hub motor with magnetic coder 13, and motor shaft 12, magnetic volume
Code device 13, magnet coaxial arrangement.
In the present embodiment, wheel hub cover is fixedly connected with end cap 18, and magnet is embedded and is fixed on end cap 18, passes through end
Lid 18 can conveniently set up magnet, and realization magnet is fixedly connected with wheel hub cover, and can easily ensure that magnet is compiled with magnetic
The coaxial arrangement of code device 13.At this point, the relative rotation between magnetic coder 13 and magnet, with the motor shaft 12 of wheel hub motor and
Relative rotation between wheel hub cover is synchronous, and the rotating speed of wheel hub is identical as the rotating speed of magnet.End cap 18 is in addition, pass through insertion
Formula sets mode and sets magnet (not shown), it is ensured that the positional precision of magnet, and reduce the size of end cap.As shown in figure 5,
End cap 18 may include lower concave part 181, and magnet can be embedded in lower concave part 181.
Certainly, above-mentioned set-up mode is merely illustrative, and the restriction of the utility model is not intended as, in the present embodiment
During other are realized, magnet can directly be connect with wheel hub cover, and magnet can also be connect with wheel hub cover indirectly, such as pass through fixation
The connection etc. realized with wheel hub cover is set on end cap or holder；The setting of magnetic coder is similar with the setting of magnet, also may be used
To be directly or indirectly fixedly connected with motor shaft, details are not described herein；Magnetic coder and magnet can also be arranged in wheel hub
The other positions of motor can also be such as arranged on the right side of wheel hub motor.The skill realized by these alternative connection types
Art scheme is within the protection scope of the present utility model.
It also should be noted that the conducting wire of magnetic coder can be connect with electric machine speed regulation controller, so as to side
Just the rotating speed for the wheel hub motor that electric machine speed regulation controller is measured according to magnetic coder, accurately controls the rotating speed of wheel hub motor.Tool
Body, magnetic coder determines the rotating speed of wheel hub motor by the rotation of sensor magnet, generates rotating speed electric signal, and will by conducting wire
Rotating speed electric signal output is to electric machine speed regulation controller.
Another embodiment of the utility model also provides a kind of wheel comprising wheel hub motor as above.
Wheel provided by the utility model can be with by the way that magnetic coder and its mating magnet are arranged on wheel hub motor
It is accurate to measure the rotating speed of wheel hub motor, and then can accurately measure the rotating speed of wheel；In addition, the cost of magnetic coder is relatively low, and
The set-up mode of magnetic coder and magnet simply, conveniently, can't greatly increase the cost of wheel hub motor；Simultaneously by
It is arranged on motor shaft between tactic at least two wire guide and two wire guides of arbitrary neighborhood and is provided with isolation in fact
Heart section easily can be sealed processing at least two wire guides, thereby may be ensured that wheel hub motor leakproofness.
Another embodiment of the utility model also provides a kind of mobile device comprising wheel as above.
Specifically, the mobile device in the present embodiment can be balance car, electric vehicle, robot etc..
Mobile device provided by the utility model, by the way that magnetic coder and its mating magnet are arranged on wheel hub motor,
The rotating speed of wheel hub motor can be accurately measured, and then can accurately measure the rotating speed of wheel, to accurately measure mobile device
Movement speed；In addition, the cost of magnetic coder is relatively low, and the set-up mode of magnetic coder and magnet is simply, conveniently, not
The cost of wheel hub motor can be greatly increased；Simultaneously by be arranged on motor shaft tactic at least two wire guide and
It is provided with isolation solid-section between two wire guides of arbitrary neighborhood, can place easily be sealed at least two wire guides
Reason, thereby may be ensured that wheel hub motor leakproofness.
Although the preferred embodiment of the utility model has been described, once a person skilled in the art knows basic
Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the scope of the utility model.Obviously, those skilled in the art can be with
Spirit and scope of the various modification and variations without departing from the utility model are carried out to the utility model.If in this way, this practicality
These novel modifications and variations belong to the scope of the claims of the present invention and its equivalent technology, then the utility model
It is also intended to include these modifications and variations.
Claims (10)
1. a kind of wheel hub motor, which is characterized in that including：
Wheel hub cover is fixedly connected with magnet on the wheel hub cover；
Motor shaft, when wheel hub motor works, the motor shaft is relatively rotated with the wheel hub cover；
Magnetic coder, the magnetic coder is fixedly connected on the motor shaft close to one end of the wheel hub cover, and the magnetic is compiled
Code device is coaxially disposed with the magnet；
It is provided at least two wire guides and at least one isolation solid-section on the motor shaft, tactic described at least two
The arbitrary neighborhood of a wire guide is provided with the isolation solid-section between the two, and the conducting wire of the magnetic coder passes through at least two
Wire guide and at least one isolation solid-section are connected up in the motor shaft.
2. wheel hub motor according to claim 1, which is characterized in that at least two wire guide includes the first wire guide
And second wire guide, first wire guide include the first cavity and the first lead segments, second wire guide includes second
Cavity and the second lead segments, the isolation solid-section are arranged between first lead segments and second lead segments；
The conducting wire of the magnetic coder passes through first cavity to enter the import of first lead segments, draws by described first
Line segment is pierced by the motor shaft, then penetrates the motor shaft by second lead segments, into second cavity, and
It is pierced by the motor shaft by second cavity.
3. wheel hub motor according to claim 1, which is characterized in that the wheel hub motor further includes circuit board, the electricity
Road plate is fixedly connected on the motor shaft, and the magnetic coder is fixed on the circuit board.
4. wheel hub motor according to claim 3, which is characterized in that fluted, the circuit is arranged on the motor shaft
Plate is arranged in the groove.
5. wheel hub motor according to claim 4, which is characterized in that the shape of the shape of the groove and the circuit board
Adaptation.
6. wheel hub motor according to claim 1, which is characterized in that the wheel hub cover is fixedly connected with end cap, the magnetic
Body is embedded and is fixed on the end cap.
7. wheel hub motor according to claim 1, which is characterized in that the lateral wall of the motor shaft is provided with metallic channel,
The metallic channel connects the outlet of one of two neighboring wire guide and the import of another wire guide, the conducting wire are pierced by phase
Behind the outlet of one of adjacent two wire guides, by the metallic channel on the outer wall for being located at the motor shaft, then penetrate another
The import of one wire guide.
8. wheel hub motor according to claim 1, which is characterized in that the conducting wire of the magnetic coder is controlled with electric machine speed regulation
Device connects.
9. a kind of wheel, which is characterized in that including such as claim 1-8 any one of them wheel hub motor.
10. a kind of mobile device, which is characterized in that including wheel as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820182714.2U CN208046395U (en) | 2018-02-02 | 2018-02-02 | Wheel hub motor, wheel and mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820182714.2U CN208046395U (en) | 2018-02-02 | 2018-02-02 | Wheel hub motor, wheel and mobile device |
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| Publication Number | Publication Date |
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| CN208046395U true CN208046395U (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820182714.2U Active CN208046395U (en) | 2018-02-02 | 2018-02-02 | Wheel hub motor, wheel and mobile device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022230610A1 (en) * | 2021-04-28 | 2022-11-03 | 日本電産株式会社 | Hub and electric vehicle |
-
2018
- 2018-02-02 CN CN201820182714.2U patent/CN208046395U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022230610A1 (en) * | 2021-04-28 | 2022-11-03 | 日本電産株式会社 | Hub and electric vehicle |
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