CN105871092A - Generator - Google Patents
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- CN105871092A CN105871092A CN201610010636.3A CN201610010636A CN105871092A CN 105871092 A CN105871092 A CN 105871092A CN 201610010636 A CN201610010636 A CN 201610010636A CN 105871092 A CN105871092 A CN 105871092A
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- mentioned
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- stator
- salient poles
- salient pole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
- H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Synchronous Machinery (AREA)
Abstract
A generator is provided, with which high-frequency alternating current can be obtained even when the rotating speed of a rotor is small, thus adapting to miniaturization of an outer diameter size. A stator is provided with a plurality of magnets, a first stator iron core, a second stator iron core and an armature winding. The first and second stator iron cores are provided with a winding slot, a first stator salient pole part of a magnetic path part adjacent to one side at the periphery of the winding slot, a second stator salient pole part of a magnetic path part adjacent to the other side at the periphery of the winding slot. Positions of rotor salient pole parts and the stator salient pole parts (62A, 62B) are determined to switch between a first state and a second state. In the first state, a second magnetic resistance between the second stator salient pole parts (62B) and the rotor salient pole parts is larger than a first magnetic resistance between the first stator salient pole parts (62A) and the rotor salient pole parts of the rotor (40), and the first magnetic resistance is larger than the second magnetic resistance in the second state.
Description
Technical field
The present invention relates to the electromotor of the hub generator etc. for bicycle.
Background technology
The rotor of the hub generator of bicycle rotates with the speed with wheel same degree, and therefore, the rotating speed of rotor is the most slack-off compared with roll-type electromotor, thus there is the tendency that induction electromotive force when low speed is advanced is not enough.Therefore, even if well-designed one-tenth being preferably used in hub generator also be able to obtain the structure of the alternating current of high frequency in the case of the rotating speed of rotor is little.
As one of this example, in patent documentation 1, propose claw-pole type generator.This electromotor includes stator and the rotor of the outer circumferential side being arranged in stator.Rotor has the multiple Magnet being arranged in the circumferential, the magnetic pole that the magnetic pole opposed with stator is alternate in the circumferential of each Magnet.Stator includes a pair stator core being arranged in axial both sides.Each stator core is configured with multiple claws that the most close side extends, and the position of the claw of each stator core replaces in the circumferential.The claw of each stator core is arranged in the radially inner side of each Magnet of rotor, is magnetized to produce the polarity of alternate in the circumferential by this Magnet.In the stator, it is configured with armature winding in the position passed through for magnetic flux via the claw of each stator core from Magnet.
In this electromotor, by the rotation of rotor, make the Magnet relative change in location relative to the claw of each stator core, it is accompanied by this, the polarity switching of each claw, thus, in armature winding, the direction reversion of the main flux of interlinkage, produces induction electromotive force in armature winding.The alternating current now obtained, owing to becoming the frequency of the size proportional to the number of poles of Magnet, is therefore readily available the high-frequency alternating current corresponding with the number of poles of Magnet.
Prior art literature
Patent documentation 1: Japanese Unexamined Patent Publication 2007-49839 publication.
In recent years, in order to realize the lifting of bicycle appearance design, and require the miniaturization of hub outside diameter size, be accompanied by this and expect the miniaturization of the outside dimension of hub generator.Being configured in claw-pole type generator, the claw of each stator core being magnetized into opposed polarity is alternately arranged in the circumferential.Thus, along with the outside dimension of hub generator reduces, the adjacent distance between claw becomes too small.Its result is, magnetic flux is easily by being magnetized between the claw of opposed polarity, and in armature winding, the leakage magnetic flux of interlinkage does not easily increase.Therefore, in claw-pole type generator, there are the following problems: with the reduction of outside dimension, leakage magnetic flux increases, thus is difficult to obtain enough induction electromotive forces.
Summary of the invention
The present invention completes in view of such problem, and one of its purpose is to provide a kind of electromotor, even if being also readily available the alternating current of high frequency in the case of the rotating speed of rotor is little, and then is suitable for the miniaturization of outside dimension.
The electromotor of certain mode of the present invention includes: rotor；And stator, having: multiple Magnet, the plurality of Magnet configures the most at spaced intervals, and the most opposed magnetic pole is homopolarity；Stator core, this stator core includes the slot for winding portion being arranged in the circumferential both sides of Magnet；And armature winding, this armature winding is wound between slot for winding portion in the way of circumferentially crossing over Magnet, rotor has rotor core, this rotor core is included in the circumferentially spaced multiple rotor with salient pole portions alternately formed, stator core has: the first stator salient poles portion, is being opposed to arrange with rotor in the magnetic circuit part that a side of circumference is adjacent relative to slot for winding portion；With the second stator salient poles portion, it is being opposed to arrange with rotor in the magnetic circuit part that the opposing party of circumference is adjacent relative to slot for winding portion.
Invention effect
Even if in accordance with the invention it is possible to obtain a kind of rotating speed at rotor little in the case of be also readily available the alternating current of high frequency and then be suitable for the electromotor of miniaturization of outside dimension.
Accompanying drawing explanation
Fig. 1 is the partial side view of the bicycle representing the generator of bicycle carrying the first embodiment.
Fig. 2 is the front view of the composition of the wheel hub of the bicycle representing the first embodiment and surrounding.
Fig. 3 is the sectional view of the generator of bicycle representing the first embodiment.
Fig. 4 is the sectional view of the armature winding of the generator of bicycle representing the first embodiment.
Fig. 5 is the figure of the position relationship representing the rotor with salient pole portion of the first embodiment, stator salient poles portion.
Fig. 6 is the figure of the state that electric angle is zero of the electromotor representing the first embodiment.
Fig. 7 is the figure of the state that electric angle is pi/2 of the electromotor representing the first embodiment.
Fig. 8 is the figure of the state that electric angle is π of the electromotor representing the first embodiment.
Fig. 9 is the figure of the state that electric angle is 3 pi/2s of the electromotor representing the first embodiment.
Figure 10 is the sectional view of the electromotor of the second embodiment.
Figure 11 is the sectional view of the armature winding of the electromotor representing the second embodiment.
Figure 12 is the figure of the state that electric angle is zero of the electromotor representing the second embodiment.
Figure 13 is the figure of the state that electric angle is pi/2 of the electromotor representing the second embodiment.
Figure 14 is the figure of the state that electric angle is π of the electromotor representing the second embodiment.
Figure 15 is the figure of the state that electric angle is 3 pi/2s of the electromotor representing the second embodiment.
Description of reference numerals
10 ... electromotor
12 ... bicycle
22 ... front-wheel (rotating part)
26 ... wheel hub
38 ... stator
40 ... rotor
44 ... rotor with salient pole portion
46 ... rotor core
48 ... Magnet
50A ... the first stator core
50B ... the second stator core
52 ... slot for winding portion
56A ... the first magnetic circuit part
56B ... the second magnetic circuit part
60 ... armature winding
62A ... stator salient poles portion
62A ... the first stator salient poles portion
62B ... the second stator salient poles portion.
Detailed description of the invention
Hereinafter, in the explanation of each embodiment, the labelling identical to identical element mark, and the repetitive description thereof will be omitted.Further, in the drawings, for convenience of description, a part for element is suitably omitted.
[the first embodiment]
Fig. 1 is the generator of bicycle 10(hereinafter referred to as electromotor 10 representing and carrying the first embodiment) the partial side view of bicycle 12.Bicycle 12 has the front fork 18 of the front pipe 16 that can be supported on main car frame 14 rotatably and is installed on the hub spindle 20 of front fork 18.Hub spindle 20 is rotatably supported with the front-wheel 22 as wheel.Side at front-wheel 22 is provided with headlight 24, and the electric power obtained by electromotor 10 is fed into headlight 24.
Front-wheel 22 also have via bearing (not shown) be rotatably freely supported on hub spindle 20 tubular wheel hub 26, be installed on many spokes 28 of the peripheral part of wheel hub 26 and be installed on the wheel rim 30 of peripheral part of each spoke 28.Wheel rim 30 is provided with tire 32.
Fig. 2 is the front view of the composition representing the wheel hub 26 of bicycle 12 and surrounding.Composition beyond wheel hub 26 is represented by double dot dash line.The electromotor 10 becoming hub generator it is accommodated with in wheel hub 26.It is formed with external screw thread 34 at the axial both ends of hub spindle 20.Hub spindle 20 is fixed on front fork 18 by the fastening of nut 36 that screws with each external screw thread 34 together with wheel hub 26.
Fig. 3 is the sectional view of electromotor 10.This figure is the sectional view orthogonal with the axis direction of the center of rotation of rotor 40 described later, is also the cross section of the line A-A along Fig. 2.It addition, omit wheel hub 26 in detail in this figure.Further, in the following description, when the position relationship of each element to stator 38 described later and rotor 40 illustrates, " axially ", " circumferential ", the term of " radially " are sometimes used." axially " therein represents the axis direction of the center of rotation of rotor 40, and " circumferential ", " radially " represent circumferential, radially respectively about the center of rotation of rotor 40.
Electromotor 10 includes the stator 38 fixed relative to hub spindle 20 and the rotor 40 rotatably supported relative to hub spindle 20.Electromotor 10 is the external rotor generator being configured with rotor 40 at the outer circumferential side of stator 38.Further, electromotor 10 is synchronous generator.The wheel hub 26 that rotor 40 is arranged to the part as front-wheel 22 rotates integratedly.Rotor 40 can rotate in linkage with the rotation of front-wheel 22.
Rotor 40 is integrally formed into ring-type.Rotor 40 has and includes annular base 42 and the rotor core 46 in multiple rotor with salient pole portion 44, and described rotor with salient pole portion 44 is arranged at the side opposed with the stator 38 i.e. inner circumferential side of annular base 42 of annular base 42.
Each rotor with salient pole portion 44 highlights towards the side opposed with stator 38 i.e. radially inner side from annular base 42.Each rotor with salient pole portion 44 is configured to the width equal with preset width w.Here what is called " equal " includes identical situation and roughly the same situation.The explanation of " equal " is the most also same.
Each rotor with salient pole portion 44 is arranged in the position staggered in the circumferential with the angle equal with predetermined angular λ (hereinafter also referred to salient pole spacing) at spaced intervals.Rotor with salient pole portion 44 adds up in this example and is provided with 20, and salient pole spacing λ is set to 18 ° (=360 °/20).This salient pole spacing λ is equivalent to electric angle 2 π of electromotor 10, when rotor 40 rotates salient pole spacing λ, as will be explained later, is produced the alternating current in a cycle by armature winding 60.
Stator 38 is integrally formed into ring-type.Stator 38 has the multiple Magnet 48 configured the most at spaced intervals and configures multiple stator core 50A, 50B of one between multiple Magnet 48 every time.Multiple Magnet 48 are alternately arranged in the circumferential with multiple stator core 50A, 50B, by bonding joint such as grade in the form of a ring.Magnet 48 and stator core 50A, 50B add up to the most respectively and arrange 4, i.e. arrange even number.
Magnet 48 is permanent magnet.Magnet 48 is for the magnetic field of armature winding 60 described later.The circumference of Magnet 48 is the direction of magnetization.Magnet 48 is configured at the position of the equal angles that staggers in the circumferential at spaced intervals.The most opposed magnetic pole of the most adjacent multiple Magnet 48 is homopolarity.Magnet 48 is arranged along the tabular radially extended in the way of the most adjacent stator core 50A, 50B being disconnected diametrically.
Stator core 50A, 50B and above-mentioned rotor core 46 are consisted of the multiple metallic plate of stacking in the axial direction of rotor 40.This metallic plate is using soft-magnetic bodies such as electromagnetic steel plates as material.
Stator core 50A, 50B include: the first stator core 50A, with the Magnet 48 of upside in a Magnet 48(such as figure of a configuration in the circumferential) adjacent a side (clockwise direction in figure) of circumference；With the second stator core 50B, with this Magnet 48 circumference the opposing party's (counter clockwise direction in figure) adjacent.In this example, the first stator core 50A is provided with two, and the second stator core 50B is provided with two.
Each stator core 50A, 50B have the slot for winding portion 52 configured in the circumferential every the circumferential both sides of the Magnet 48 of a configuration.Slot for winding portion 52 is configuration one every time between multiple Magnet 48.Slot for winding portion 52 is respectively formed with one in each first stator core 50A and each second stator core 50B.Slot for winding portion 52 is formed as caving in from the side opposed with rotor 40 i.e. radial outside to the radially inner side of opposition side.
Each stator core 50A, 50B, in addition to slot for winding portion 52, also have magnetic circuit connecting portion 54 and magnetic circuit part 56A adjacent in circumference both sides with slot for winding portion 52, the 56B of the arcuation adjacent in bottom side with slot for winding portion 52.Magnetic circuit connecting portion 54 circumferentially connects each magnetic circuit part 56A, 56B.Magnetic circuit part 56A, 56B extend to the i.e. radial outside in the side opposed with rotor 40.Magnetic circuit part 56A, 56B include with slot for winding portion 52 in adjacent the first magnetic circuit part 56A of a side (in figure clockwise) of circumference with in adjacent the second magnetic circuit part 56B of the opposing party's () of circumference in figure counterclockwise.
Fig. 4 is the sectional view of the armature winding 60 representing electromotor 10.In detail in this figure the coiling direction B of the armature winding 60 of an axial side (paper nearby side) of rotor 40 is illustrated in the lump.Stator 38 also has armature winding 60, armature winding 60 by circumferentially cross in each Magnet 48 each in the way of be wound on each Magnet 48 between the slot for winding portion 52 that circumference both sides are adjacent.Armature winding 60 and each in multiple Magnet 48 are arranged in correspondence with, and are provided with the armature winding 60 identical with the number of Magnet 48.Armature winding 60 is to wind from circumference both sides and in the way of axial both sides surround corresponding Magnet 48.
Armature winding 60 is wound between the most adjacent slot for winding portion 52 in concentratred winding mode, but can also wind in Distributed Winding mode in the way of via other slot for winding portion 52.The most adjacent armature winding 60 is with coiling direction B winding reversely with each other, but can also wind with equidirectional.
As will be explained later, in armature winding 60, produce the alternating current of homophase when rotor 40 rotates.Each armature winding 60 electrically connects in parallel, and its outfan is connected with not shown rectification circuit, the alternating current to rectification circuit output single-phase.Rectification short circuit alternating current is carried out rectification and smooth wait and be converted to unidirectional current after, be supplied to headlight 24(as external electrical equipment with reference to Fig. 1).It addition, each armature winding 60 can also be electrically connected in series.
Here, as it is shown on figure 3, stator 38 has: the first stator salient poles portion 62A, each with what rotor 40 was opposed to be arranged in multiple first magnetic circuit part 56A；With the second stator salient poles portion 62B, each with what rotor 40 was opposed to be arranged in multiple second magnetic circuit part 56B.Each stator salient poles portion 62A, 62B highlight towards the side opposed with rotor 40 i.e. radial outside from each magnetic circuit part 56A, 56B.Each first magnetic circuit part 56A is provided with two the first stator salient poles portion 62A, and each second magnetic circuit part 56B is provided with two the second stator salient poles portion 62B.Stator salient poles portion 62A, 62B add up in this example and are provided with 16.
62A, 62B configure relative to rotor with salient pole portion 44 with separating predetermined gap diametrically for each stator salient poles portion.It is identical width that each stator salient poles portion 62A, 62B are configured to the width w with rotor with salient pole portion 44.
Fig. 5 is the figure of the position relationship representing rotor with salient pole portion 44, stator salient poles portion 62A, 62B.In detail in this figure in order to the part in multiple salient pole portions is made a distinction, and represent at letters such as respective labelling ends mark (a).There is also the situation of same expression in figures in the following.
The multiple first stator salient poles portion 62A being arranged at first magnetic circuit part 56A are arranged in the position staggered in the circumferential with the angle equal with salient pole spacing λ in each rotor with salient pole portion 44.It is arranged at the position that multiple second stator salient poles portion 62B of second magnetic circuit part 56B are also disposed in staggering in the circumferential with the angle equal with salient pole spacing λ.Further, the most adjacent near the first stator salient poles portion 62A other second stator salient poles portion 62B is arranged in the position staggered in the circumferential with the angle equal with λ × 1.5.
Thus, set n as more than 1 natural number time, the first stator salient poles portion 62A is arranged in the position staggered in the circumferential relative to other the first stator salient poles portion 62A with the angle equal with λ × n.Such as, first stator salient poles portion 62A(d) relative to other the first stator salient poles portion 62A(g the most adjacent at it) λ × 4(=λ that staggers × 1.5+ λ+λ × 1.5), other the first stator salient poles portion 62A(c relative to the most adjacent at it) λ × 1.0 of staggering.Second stator salient poles portion 62B is arranged in, relative to other the second stator salient poles portion 62B, the position staggered in the circumferential with the angle equal with λ × n similarly.
Further, the second stator salient poles portion 62B is arranged in relative to the first stator salient poles portion 62A with the position staggered in the circumferential with the angle that λ × (n+0.5) is equal.Such as, second stator salient poles portion 62B(e) relative to the first stator salient poles portion 62A(g the most adjacent at it) λ × 2.5(=λ+λ × 1.5 of staggering), the first stator salient poles portion 62A(d relative to the most adjacent at it) λ × 1.5 of staggering.
Use Fig. 6 to Fig. 9 that the action of above electromotor 10 is illustrated.Each figure represents the rotor 40 state when direction P rotates electric angle pi/2 every time.Further, in Fig. 6 and Fig. 8, the flowing of the main main flux represented in the magnetic flux flowing through rotor core 46 etc., eliminates the flowing of leakage magnetic flux.Further, the flowing of leakage magnetic flux is represented in figures 7 and 9.Electric angle when being below in the position relationship of Fig. 6 is zero, and in Fig. 7 to Fig. 9, electric angle is pi/2, π, 3 pi/2s.Further, for convenience, to a rotor with salient pole portion 44(a) mark " o " labelling be indicated.
As shown in Figure 6, when electric angle is zero, observing from the radial direction of rotor 40, the first stator salient poles portion 62A is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout circumferential whole width.Further, observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in relative to its neighbouring rotor with salient pole portion 44 throughout the most misaligned position of the whole width of circumference, i.e. be in the position staggered in the circumferential.In other words, the scope (the hereinafter referred to as first coincidence scope) that the first stator salient poles portion 62A overlaps in the circumferential relative to a neighbouring rotor with salient pole portion 44 is bigger than the scope (the hereinafter referred to as second coincidence scope) that the second stator salient poles portion 62B overlaps in the circumferential relative to other neighbouring rotor with salient pole portions 44.Thus, compared with magnetic resistance the that is first magnetic resistance R1 between the first stator salient poles portion 62A and rotor with salient pole portion 44, magnetic resistance the that is second magnetic resistance R2 between the second stator salient poles portion 62B and rotor with salient pole portion 44 significantly increases.
Its result is, by the magnetic flux produced from a Magnet 48, form the magnetic circuit Mp of the closed loop of the first stator salient poles portion 62A of the first stator salient poles portion 62A and the second stator core 50B adjacent with another magnetic pole strength through the first stator core 50A adjacent with 48 1 magnetic pole strengths of this Magnet.Such as, the Magnet 48(b of upside in figure) form following magnetic circuit Mp: via the first stator core 50A(b) magnetic circuit connecting portion 54 → the first stator core 50A(b) the first magnetic circuit part 56A → the first stator salient poles portion 62A(g) → rotor with salient pole portion 44(g) annular base 42 → rotor with salient pole portion 44(c of → rotor 40), (d) → first stator salient poles portion 62A(c), 62A(d) → the second stator core 50B(a) the first magnetic circuit part 56A return to initial Magnet 48(b).
This magnetic circuit Mp is formed as interlinking on each armature winding 60 inner radial.Now, owing to the most opposed magnetic pole of multiple Magnet 48 is homopolarity, the direction of rotation of the magnetic circuit Mp therefore produced by the most adjacent Magnet 48 is reversely with each other.Such as, by the Magnet 48(b of upside in figure) the magnetic circuit Mp that produces be counterclockwise, the Magnet 48(b by the left of in figure) the magnetic circuit Mp that produces is clockwise.Its result is, makes the magnetic flux produced from Magnet 48 respectively interlink with becoming equidirectional in an armature winding 60.Such as, the armature winding 60(b of upside in the drawings) in, by the Magnet 48(b of upside in figure) magnetic flux that produces with by the Magnet 48(a in left side in figure) magnetic flux that produces interlinks in the same direction.
As it is shown in fig. 7, when electric angle is pi/2, observe from the radial direction of rotor 40, the first stator salient poles portion 62A is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout substantially one circumferential half width.Further, the second stator salient poles portion 62B is also same.In other words, the first stator salient poles portion 62A is identical with the second coincidence scope that rotor with salient pole portion 44 overlaps with the first coincidence scope that rotor with salient pole portion 44 overlaps and the second stator salient poles portion 62B.Thus, the first magnetic resistance R1 and the second magnetic resistance R2 is identical size.
Its result is, by the magnetic flux produced from a Magnet 48, form the magnetic circuit Mp of the closed loop of the first stator salient poles portion 62A of the second stator salient poles portion 62B and the second stator core 50B adjacent with another magnetic pole strength through the first stator core 50A adjacent with 48 1 magnetic pole strengths of this Magnet.Such as, the Magnet 48(b of upside in figure) form following magnetic circuit Mp: via the first stator core 50A(b) the second magnetic circuit part 56B → the second stator salient poles portion 62B(e), (f) → rotor with salient pole portion 44(e), 44(f) annular base 42 → rotor with salient pole portion 44(c of → rotor 40), 44(d) → the first stator salient poles portion 62A(c), (d) → second stator core 50B(a) the first magnetic circuit part 56A return to initial Magnet 48(b).This magnetic circuit Mp radially comes and goes in each armature winding 60, is formed as not interlinking in each armature winding 60.
As shown in Figure 8, when electric angle is π, observing from the radial direction of rotor 40, the first stator salient poles portion 62A is in relative to its neighbouring rotor with salient pole portion 44 throughout the most misaligned position of the whole width of circumference, say, that be in the position staggered in the circumferential.Further, observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout circumferential whole width.In other words, the first coincidence scope overlapped with rotor with salient pole portion 44 compared to the first stator salient poles portion 62A, the second coincidence scope that the second stator salient poles portion 62B overlaps with rotor with salient pole portion 44 is bigger.Thus, the first magnetic resistance R1 is significantly more than the second magnetic resistance R2.
Its result is, by the magnetic flux produced from Magnet 48, form the magnetic circuit Mp of the closed loop of the second stator salient poles portion 62B of the second stator salient poles portion 62B and the second stator core 50B adjacent with another magnetic pole strength through the first stator core 50A adjacent with this Magnet 48 magnetic pole strength.Such as, the Magnet 48(b of upside in figure) form following magnetic circuit Mp: via the first stator core 50A(b) the second magnetic circuit part 56B → the second stator salient poles portion 62B(e), (f) → rotor with salient pole portion 44(e), 44(f) annular base 42 → rotor with salient pole portion 44(a of → rotor 40), 44(t) → the second stator salient poles portion 62B(a), 62B(b) → the second stator core 50B(a) magnetic circuit connecting portion 54 return to initial Magnet 48(b).
This magnetic circuit Mp is formed as radially interlinking in each armature winding 60.Now, when magnetic circuit Mp is zero with electric angle compared with (reference Fig. 6), in armature winding 60, the direction of interlinkage is opposite direction radially.
As it is shown in figure 9, when electric angle is 3 pi/2, observe from the radial direction of rotor 40, the first stator salient poles portion 62A is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout half circumferential width.Further, observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout half circumferential width.Thus, the first magnetic resistance R1 and the second magnetic resistance R2 is identical size.Its result is, the magnetic circuit Mp that formation is identical when being pi/2 with electric angle.
As it has been described above, when state (the hereinafter referred to as first state) that electric angle is zero, the second magnetic resistance R2 is significantly more than the first magnetic resistance R1, when state (the hereinafter referred to as second state) that electric angle is 3 pi/2s, the first magnetic resistance R1 is significantly more than the second magnetic resistance R2.When rotor 40 rotates, these first states alternately switch with the second state.
As shown in Figure 6 and Figure 8, at an armature winding 60(such as armature winding 60(b)) in, when the first state, form the magnetic circuit Mp of the direction interlinkage being radially oriented, when the second state, form the magnetic circuit Mp of another direction interlinkage being radially oriented.It is to say, when switching between the first state and the second state, to switch in the way of direction radially inverts at the magnetic flux of interlinkage in each armature winding 60, produce the induction electromotive force of exchange at each armature winding 60.Now, in each armature winding 60, produce the alternating current of homophase.So, in electromotor 10, the position of multiple rotor with salient pole portions 44 and multiple stator salient poles portion 62A, 62B is defined as the first state and alternately switches with the second state.
The action effect of above electromotor 10 is illustrated.
In general, frequency f(Hz of electromotor) at the rotating speed N(r/min of rotor) and the number of poles P of electromotor between meet the relation of following mathematical expression (1).
N=120 × f/P ... (1)
The present inventor obtains the cognition of the number of poles P that 2 times of quantity are electromotor of the quantity in rotor with salient pole portion 44 in the electromotor 10 of present embodiment.Analysis that this cognition is carried out by employing the structure shown in Fig. 3 and obtain.In this analysis, the rotating speed N of rotor 40 is set to 120(r/min), obtain frequency f(Hz of the electric power sent by each armature winding 60).Its result is, obtaining frequency f is 40(Hz), 2 times of quantity of the quantity (20) confirming rotor with salient pole portion 44 by mathematical expression (1) are the number of poles P of electromotor.
Therefore, in the electromotor 10 of present embodiment, if at predetermined configuration rotor with salient pole portion 44, position and stator salient poles portion 62A, 62B, then the quantity in rotor with salient pole portion 44 is the most, the frequency of induction electromotive force is the biggest, even if in the case of the rotating speed of rotor 40 is little, also it is readily available the alternating current of high frequency.It addition, the magnetic flux of the voltage of induction electromotive force and interlinkage in armature winding 60 and frequency long-pending proportional, therefore, it is possible to the alternating current of acquisition high frequency correspondingly becomes is obtained in that high-tension alternating current.
Further, the first stator salient poles portion 62A and the second stator salient poles portion 62B is arranged at across Magnet 48 and the position in slot for winding portion 52, thus easily being spaced apart them.Thus, even if the first stator salient poles portion 62A and the second stator salient poles portion 62B is excited as different polarity by Magnet 48, it is also possible to easily suppress the generation of leakage magnetic flux between the first stator salient poles portion 62A and the second stator salient poles portion 62B.Therefore, while the leakage magnetic flux between suppression the first stator salient poles portion 62A and the second stator salient poles portion 62B produces, the rotor 40 of electromotor 10 and the outside dimension miniaturization of stator 38 are easily made.Reduce it addition, the leakage magnetic flux between such suppression the first stator salient poles portion 62A and the second stator salient poles portion 62B produces the magnetic flux of interlinkage in armature winding 60 of suppression exactly and easily utilize electromotor 10 to obtain enough output voltages.
And, such as the multiple salient pole portions that armature winding is wound on stator described in Japanese Unexamined Patent Publication 2012-182961 publication each on threephase alternator in, along with the increase of the number of magnetic poles of rotor, the quantity of armature winding increases, accordingly results in the reduction of high cost and assembleability.For this point, in the present embodiment, it is possible to obtain the alternating current of high frequency, and do not increase Magnet 48 and the quantity of armature winding 60 and only increase the quantity in rotor with salient pole portion 44, therefore, number of components can correspondingly be cut down, it is possible to reduce cost and obtain good assembleability simultaneously.
Further, in conventional claw-pole type generator, the magnetic flux of the claw flowing to each stator core from the Magnet of rotor flows towards the root of claw after changing direction in claw vertically.The magnetic circuit sectional area orthogonal with magnetic circuit direction (axially) of this claw determines according to radial thickness and the girth of claw.Here, in the case of not changing the axial length of electromotor and making outside dimension miniaturization, the axial length of the claw of stator core is constant and attenuates in the circumferential, the clearance plane opposed with Magnet attenuates, and thickness radially reduces, its result is, the magnetic circuit sectional area of claw root reduces.Thus, easily concentrate on the root of the little claw of magnetic circuit sectional area about the claw of stator core at the magnetic flux that clearance plane bears, easily produce magnetic saturation at root.Its result is, the magnetic flux at armature winding interlinkage is difficult to flow, it is difficult to utilize electromotor to obtain enough output voltages.
For this point, in the electromotor 10 of present embodiment, in stator salient poles portion 62A, 62B of stator core 50, magnetic flux is not towards being axially radially oriented flowing.The magnetic circuit sectional area orthogonal with magnetic circuit direction (radially) of this stator salient poles portion 62A, 62B determines according to axial length and the girth of stator salient poles portion 62A, 62B, even if being not easy to change in the case of the outside dimension miniaturization of electromotor 10.Therefore, even if in the case of the outside dimension miniaturization of electromotor 10, it is also possible to guaranteed the magnetic circuit sectional area of stator salient poles portion 62A, 62B by the axial length increasing stator core 50.Thus, even if in the case of the outside dimension miniaturization of electromotor 10, also being able to suppress the magnetically saturated generation of stator salient poles portion 62A, 62B, suppression is the minimizing of the magnetic flux of interlinkage in armature winding 60, thus easily utilizes electromotor 10 to obtain enough output voltages.
And, whenever switching between the first state and the second state, the direction in armature winding 60 of the magnetic circuit Mp by Magnet 48 generation can be made to invert, compared with nonreversible with the direction, the variable quantity of the magnetic flux of interlinkage in armature winding 60 can be increased, be correspondingly readily available high-tension alternating current.Further, whenever switching between the first state and the second state, it is possible to use a Magnet 48 to make the direction reversion of the interior magnetic circuit Mp produced of an armature winding 60, therefore, while the quantity of suppression Magnet 48, be readily available high-tension alternating current.
Further, each first stator salient poles portion 62A staggers with the angle equal with λ × n relative to other first stator salient poles portion 62A, each second stator salient poles portion 62B relative to the first stator salient poles portion 62A to stagger with the angle that λ × (n+0.5) is equal.Thus, making each stator salient poles portion 62A, 62B relative aligned in position relative to rotor with salient pole portion 44, the variation pattern making the magnetic circuit Mp that the magnetic flux by producing formed from each Magnet 48 is consistent, utilizes each armature winding 60 can be readily available the alternating current of homophase.
Further, owing to each stator core 50A, 50B and rotor core 46 can be constituted by the multiple metallic plate of stacking, therefore, it is possible to the iron loss that the vortex flow at the part that suppression main flux is passed through significantly causes.
[the second embodiment]
Figure 10 is the sectional view of the electromotor 10 representing the second embodiment, and Figure 11 is the sectional view of the armature winding 60 representing electromotor 10.The rotor with salient pole portion 44 of rotor 40 adds up in the example of fig. 3 and is provided with 20, and adds up in this example and arrange 18.Salient pole spacing λ is 20 ° (=360 °/18).
The Magnet 48 of stator 38 and stator core 50A, 50B add up to the most respectively and arrange 4, and total arranges two the most respectively.Further, the first stator core 50A and the second stator core 50B is respectively provided with two in the example of fig. 3, and is respectively provided with 1 in this example.Further, in the example of fig. 3, the first stator salient poles portion 62A and the second stator salient poles portion 62B is respectively arranged two in the first magnetic circuit part 56A, the second magnetic circuit part 56B, and respectively arranges 4.So, rotor with salient pole portion 44, the quantity of stator salient poles portion 62A, 62B are not particularly limited.
Use Figure 12 to Figure 15 that the action of above electromotor 10 is described.Each figure represents the rotor 40 state when direction P rotates electric angle pi/2 every time.The flowing of the main main flux represented in the magnetic flux flowing through rotor core 46 etc. in Figure 12, Figure 14, the flowing of leakage magnetic flux is omitted.Further, in Figure 13 and Figure 15, represent the flowing of leakage magnetic flux.Electric angle when being below in the position relationship of Figure 12 is zero, and in Figure 13 to Figure 15, electric angle is pi/2, π, 3 pi/2s.
As shown in figure 12, when electric angle is zero, observing from the radial direction of rotor 40, the first stator salient poles portion 62A is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout circumferential whole width.Observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in relative to its neighbouring rotor with salient pole portion 44 throughout the most misaligned position of the whole width of circumference, say, that be in the position staggered in the circumferential.In other words, the first coincidence scope that the first stator salient poles portion 62A overlaps with rotor with salient pole portion 44 is bigger than the second coincidence scope that the second stator salient poles portion 62B overlaps with rotor with salient pole portion 44.Thus, as the first embodiment, to form the magnetic circuit Mp of closed loop in the way of radially interlinking in each armature winding 60.
As shown in figure 13, when electric angle is pi/2, observing from the radial direction of rotor 40, the first stator salient poles portion 62A is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout half circumferential width.Further, observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout half circumferential width.In other words, the first stator salient poles portion 62A is identical with the second coincidence scope that rotor with salient pole portion 44 overlaps with the first coincidence scope that rotor with salient pole portion 44 overlaps and the second stator salient poles portion 62B.Thus, as the first embodiment, to form the magnetic circuit Mp of closed loop in the way of radially coming and going in each armature winding 60.
As shown in figure 14, when electric angle is π, observing from the radial direction of rotor 40, the first stator salient poles portion 62A is in relative to its neighbouring rotor with salient pole portion 44 throughout the most misaligned position of the whole width of circumference, say, that be in the position staggered in the circumferential.Observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout circumferential whole width.In other words, the first coincidence scope that the second coincidence scope that the second stator salient poles portion 62B overlaps with rotor with salient pole portion 44 overlaps with rotor with salient pole portion 44 more than the first stator salient poles portion 62A.Thus, as the first embodiment, to form the magnetic circuit Mp of closed loop in the way of radially interlinking in each armature winding 60.
As shown in figure 15, when electric angle is 3 pi/2, observing from the radial direction of rotor 40, the first stator salient poles portion 62A is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout half circumferential width.Further, observing from the radial direction of rotor 40, the second stator salient poles portion 62B is in the position that the rotor with salient pole portion 44 neighbouring with it overlaps throughout half circumferential width.It is consequently formed magnetic circuit Mp identical when being pi/2 with electric angle.
The present inventor also obtain the cognition of the number of poles P that 2 times of quantity are electromotor of the quantity in rotor with salient pole portion 44 in above electromotor 10.Analysis that this cognition is carried out by employing the structure shown in Figure 10 and obtain.In this analysis, the rotating speed N of rotor 40 is set to 120(r/min), obtain frequency f(Hz of the electric power sent by each armature winding 60).Its result is, obtaining frequency f is 36(Hz), 2 times of quantity of the quantity (18) confirming rotor with salient pole portion 44 by mathematical expression (1) are the number of poles P of electromotor.
Therefore, utilizing the electromotor 10 of present embodiment, also as the first embodiment, the quantity in rotor with salient pole portion 44 is the most, and the frequency of induction electromotive force is the biggest, even if in the case of the rotating speed of rotor 40 is little, is also readily available the alternating current of high frequency.Aspect at other also obtains the action effect as the first embodiment.
Describe the present invention above according to embodiment, but embodiment only represents principles and applications.Further, in embodiments, in the range of the thought of the present invention without departing from claim defined, the change of substantial amounts of variation and configuration can be carried out.
Electromotor 10 is illustrated as a example by generator of bicycle, but its purposes is not limited to this.Further, electromotor 10 is in the case of for generator of bicycle, and rotor 40 can rotate in linkage with the rotation of the rotating part of bicycle 12.Here rotating part is to be illustrated as a example by the front-wheel 22 of wheel, but is in addition to outside hub shell, crank, it is also possible to be the belt wheel etc. of rear chiain-moving device (chain tensioning device).Further, electromotor 10 can also not hub generator and be configured to roll-type electromotor etc..Although electromotor 10 is illustrated as a example by external rotor generator, but can also be the inner-rotor-type electromotor being configured with rotor 40 in the inner circumferential side of stator 38.
To the first stator core 50A of stator 38 and the second stator core 50B split the example that constitutes be illustrated, but the first stator core 50A, the second stator core 50B can also be integrally formed.Further, the example that the width of stator salient poles portion 62A, 62B is equal with the width w in rotor with salient pole portion 44 is illustrated, but can also be below the width w in rotor with salient pole portion 44, it is also possible to be more than the width w in rotor with salient pole portion 44.
The position of rotor with salient pole portion 44 and stator salient poles portion 62A, 62B is not limited to the example of diagram, as long as the second state being defined as the first big state of second magneto resistive ratio the first magnetic resistance big with first magneto resistive ratio the second magnetic resistance alternately switches.
On the basis of meeting this condition, in the first state, it is possible to so that the first coincidence scope that the first stator salient poles portion 62A overlaps with rotor with salient pole portion 44 is bigger than the second coincidence scope that the second stator salient poles portion 62B overlaps with rotor with salient pole portion 44.Further, on the basis of meeting this condition, it is possible to so that the second coincidence scope is bigger than the first coincidence scope in the second condition.
Such as in Fig. 6 and Figure 12, it is throughout the scope of whole width of the first stator salient poles portion 62A circumference and not have the example of the second coincidence scope to be illustrated to the first coincidence scope when in the first state.In addition can be, the most such as first coincidence scope is the identical scope of example with diagram, simultaneously the second coincidence scope be relative to the second stator salient poles portion 62B near the scope that overlaps of the rotor with salient pole portion 44 scope below a half width of the second stator salient poles portion 62B.Now, the second stator salient poles portion 62B is in the position staggered in the circumferential in the way of the second coincidence scope is less than the first coincidence scope relative to a rotor with salient pole portion 44.
Same in Fig. 8 and Figure 14, to not having the first coincidence scope and the second coincidence scope to be when in the second state, the example of scope of whole width throughout the second stator salient poles portion 62B circumference is illustrated.In addition can also be, the most such as second coincidence scope is the identical scope of example with diagram, simultaneously the first coincidence scope be relative to the first stator salient poles portion 62A near the scope that overlaps of the rotor with salient pole portion 44 scope below a half width of the first stator salient poles portion 62A.
Claims (7)
1. an electromotor, it is characterised in that including:
Rotor；With
Stator, has: multiple Magnet, and the plurality of Magnet configures the most at spaced intervals, and the most opposed magnetic pole is homopolarity；Stator core, this stator core includes the slot for winding portion being arranged in the circumferential both sides of above-mentioned Magnet；And armature winding, this armature winding is wound between above-mentioned slot for winding portion in the way of circumferentially crossing over above-mentioned Magnet,
Above-mentioned rotor has rotor core, and this rotor core is included in the circumferentially spaced multiple rotor with salient pole portions alternately formed,
Said stator iron core has: the first stator salient poles portion, is being opposed to arrange with above-mentioned rotor in the magnetic circuit part that a side of circumference is adjacent relative to above-mentioned slot for winding portion；With the second stator salient poles portion, it is being opposed to arrange with above-mentioned rotor in the magnetic circuit part that the opposing party of circumference is adjacent relative to above-mentioned slot for winding portion.
Electromotor the most according to claim 1, it is characterised in that
In the case of the magnetic resistance between above-mentioned first stator salient poles portion and above-mentioned rotor with salient pole portion being set to the first magnetic resistance and the magnetic resistance between above-mentioned second stator salient poles portion and above-mentioned rotor with salient pole portion is set to the second magnetic resistance, the position in above-mentioned multiple rotor with salient pole portion, above-mentioned first stator salient poles portion and above-mentioned second stator salient poles portion is defined as, when above-mentioned rotor rotates, above-mentioned second magnetic resistance alternately switches more than the second state of above-mentioned second magnetic resistance with above-mentioned first magnetic resistance more than the first state of above-mentioned first magnetic resistance.
Electromotor the most according to claim 1 and 2, it is characterised in that
When setting following state as the first state: about the center of rotation of above-mentioned rotor, bigger relative to the scope that neighbouring above-mentioned rotor with salient pole portion overlaps in the circumferential than observing above-mentioned second stator salient poles portion from above-mentioned radial direction relative to the scope that neighbouring above-mentioned rotor with salient pole portion overlaps in the circumferential from radially observing above-mentioned first stator salient poles portion
And when setting following state as the second state: observe above-mentioned second stator salient poles portion from above-mentioned radial direction bigger relative to the scope that neighbouring above-mentioned rotor with salient pole portion overlaps in the circumferential than observing above-mentioned first stator salient poles portion from above-mentioned radial direction relative to the scope that neighbouring above-mentioned rotor with salient pole portion overlaps in the circumferential
The position in above-mentioned multiple rotor with salient pole portion, above-mentioned first stator salient poles portion and above-mentioned second stator salient poles portion is defined as, and above-mentioned first state alternately switches with above-mentioned second state.
4. according to the electromotor described in any one in claims 1 to 3, it is characterised in that
Above-mentioned multiple rotor with salient pole portion is arranged in the position staggered in the circumferential with the angle equal with predetermined angular λ,
Above-mentioned first stator salient poles portion is arranged in relative to other the first stator salient poles portion with the natural number with λ × n(n being more than 1) position staggered in the circumferential of equal angle,
Above-mentioned second stator salient poles portion is arranged in relative to above-mentioned first stator salient poles portion with the position staggered in the circumferential with the angle that λ × (n+0.5) is equal.
5. according to the electromotor described in any one in Claims 1-4, it is characterised in that
Above-mentioned rotor core and said stator iron core are consisted of the multiple metallic plate of stacking on the axis direction of the center of rotation of above-mentioned rotor.
6. according to the electromotor described in any one in claim 1 to 5, it is characterised in that
This electromotor is the generator of bicycle that above-mentioned rotor can rotate in linkage with the rotation of the rotating part of bicycle.
Electromotor the most according to claim 6, it is characterised in that
This electromotor is the hub generator of bicycle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015023222A JP6788957B2 (en) | 2015-02-09 | 2015-02-09 | Generator |
| JP2015-023222 | 2015-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105871092A true CN105871092A (en) | 2016-08-17 |
| CN105871092B CN105871092B (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610010636.3A Active CN105871092B (en) | 2015-02-09 | 2016-01-08 | Generator |
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| Country | Link |
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| JP (1) | JP6788957B2 (en) |
| CN (1) | CN105871092B (en) |
| DE (1) | DE102016201848A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302101A (en) * | 2018-08-28 | 2019-02-01 | 杨济阁 | Rare earth permanent magnet magnetic suspension alternating current-direct current hub motor |
| CN109572802A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Wheel steering system and warehouse trucks |
| CN110784032A (en) * | 2018-07-31 | 2020-02-11 | 通用电气再生能源技术公司 | Rotor for a synchronous generator |
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| JPS56150960A (en) * | 1980-03-11 | 1981-11-21 | Bosch Gmbh Robert | Generator |
| JPH0648341A (en) * | 1992-07-31 | 1994-02-22 | Isonic:Kk | Dynamo for bicycle |
| JP2001275321A (en) * | 2000-03-27 | 2001-10-05 | Shr Ltd Bvi | Inductor type ac power generator |
| JP4207386B2 (en) * | 2000-12-28 | 2009-01-14 | 株式会社デンソー | Inductor-type electric machine with magnet-equipped armature |
| JP4250878B2 (en) * | 2001-08-08 | 2009-04-08 | パナソニック株式会社 | Vernier type brushless motor |
| JP2003284305A (en) * | 2002-03-20 | 2003-10-03 | Japan Servo Co Ltd | Three-phase brushless motor with inductor type core armature |
| JP4111966B2 (en) | 2005-08-10 | 2008-07-02 | 三洋電機株式会社 | Bicycle dynamo and bicycle lighting device equipped with the bicycle dynamo |
| DE102005045348A1 (en) * | 2005-09-22 | 2007-04-05 | Siemens Ag | Tooth module for a permanent magnet excited primary part of an electrical machine |
| JP2012182961A (en) * | 2011-03-03 | 2012-09-20 | Sanyo Electric Co Ltd | Hub dynamo for bicycle |
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2015
- 2015-02-09 JP JP2015023222A patent/JP6788957B2/en active Active
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- 2016-02-08 DE DE102016201848.5A patent/DE102016201848A1/en active Granted
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| JP2001037189A (en) * | 1999-07-27 | 2001-02-09 | Sankyo Seiki Mfg Co Ltd | Dynamo-electric machine |
| JP2013207979A (en) * | 2012-03-29 | 2013-10-07 | Panasonic Corp | Rotary machine, driving method of motor and motor driving system |
| CN103051138A (en) * | 2012-12-20 | 2013-04-17 | 东南大学 | Multi-tooth magnetic flux switching permanent magnetic memory motor |
| CN203289210U (en) * | 2013-05-15 | 2013-11-13 | 东南大学 | A mixed excitation-type stator surface mounting-type double-salient-pole motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109572802A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Wheel steering system and warehouse trucks |
| CN109572802B (en) * | 2017-09-29 | 2020-08-07 | 比亚迪股份有限公司 | Vehicle steering system and storage vehicle |
| CN110784032A (en) * | 2018-07-31 | 2020-02-11 | 通用电气再生能源技术公司 | Rotor for a synchronous generator |
| CN109302101A (en) * | 2018-08-28 | 2019-02-01 | 杨济阁 | Rare earth permanent magnet magnetic suspension alternating current-direct current hub motor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016201848A1 (en) | 2016-08-11 |
| JP6788957B2 (en) | 2020-11-25 |
| JP2016146712A (en) | 2016-08-12 |
| CN105871092B (en) | 2019-07-05 |
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