CN103997158A - Driving device - Google Patents
Driving device Download PDFInfo
- Publication number
- CN103997158A CN103997158A CN201410054061.6A CN201410054061A CN103997158A CN 103997158 A CN103997158 A CN 103997158A CN 201410054061 A CN201410054061 A CN 201410054061A CN 103997158 A CN103997158 A CN 103997158A
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- Prior art keywords
- deceleration device
- rotation
- fixed
- gear
- planetary gear
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Abstract
The invention discloses a driving device (1), comprising a motor (30) possessing an inner side stator (31), a rotor (40) and a rotor shaft (41) which are distributed at motor housing (20) fixed at a rotation shaft (10); the rotation of the rotor shaft (41) is transmitted to the rotatable hub (70) through the single way clutch (80), the first decelerator (51) and the second decelerator (60). The single way clutch (80) possesses a side connected to a rotor shaft (41) and the other side of the input shaft (55) which is connected to the input shaft (55) of the first decelerator (51).
Description
Technical field
The present invention relates to a kind of driving arrangement.
Background technology
Before this, known a kind of driving arrangement, described driving arrangement is mounted to the wheel of electric bicycle, to make described driving arrangement contribute to bicyclist's pedal force or self-propelled electric bicycle.
In the driving arrangement described in JP2000-53068A, rotating shaft is fixed to the front fork of electric bicycle, and motor is fixed to rotating shaft.In described motor, armature spindle is rotatable with respect to the stator that is fixed to rotating shaft.The rotation of armature spindle is passed to hub by the first deceleration device, the second deceleration device and one-way clutch.The wheel of electric bicycle rotates by the rotation of hub.
In the time that electric bicycle moves along direction forward, although the rotation of motor is passed to rotating shaft by one-way clutch, one-way clutch stops the rotation of wheel to be passed to motor.
But in the driving arrangement of JP2000-53068A, one-way clutch is arranged between the second deceleration device and hub.The first and second deceleration devices reduce the rotating speed of the rotation of transmitting from motor, and the rotation that rotating speed is reduced exports one-way clutch to.Therefore the moment of torsion that, is applied to one-way clutch becomes large.Therefore,, in the time that the size of one-way clutch is increased to the rigidity of one-way clutch, the radial dimension of driving arrangement may increase.
In addition, in the driving arrangement of JP2000-53068A, one-way clutch is connected directly to hub, thereby the gimp of one-way clutch may leak to outside hub.
Summary of the invention
In view of above shortcoming proposes the present invention.Therefore, an object of the present invention is to provide a kind of driving arrangement, it can reduce the size of driving arrangement.
According to the present invention, a kind of driving arrangement is provided, it comprises fixed axis, electric machine casing, motor, deceleration device, rotatable body and one-way clutch.Electric machine casing is fixed to fixed axis.Motor comprises stator, rotor and armature spindle.Stator is fixed to electric machine casing.Rotor is rotatable with respect to stator.Armature spindle can rotate integratedly with rotor.Deceleration device comprises power shaft, and it receives rotation from armature spindle.Deceleration device reduces the rotating speed of the rotation of power shaft, and the rotation that reduces of output speed.Rotatable body is constructed to tubular, and rotatable with respect to electric machine casing.Rotatable body is by the output rotation of deceleration device.One-way clutch has a side that is connected to armature spindle and the opposite side that is connected to power shaft.
Brief description of the drawings
Accompanying drawing as herein described is only for exemplary purpose, and is not intended to limit the scope of the invention by any way.
Fig. 1 is the cutaway view of driving arrangement according to an embodiment of the invention;
Fig. 2 is the partial enlarged drawing of the region II in Fig. 1;
Fig. 3 is the cutaway view intercepting along the line III-III in Fig. 2;
Fig. 4 is the exploded view of driving arrangement according to an embodiment of the invention; And
Fig. 5 is another exploded view of driving arrangement according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described with reference to the accompanying drawings.
Fig. 1 to Fig. 5 shows embodiments of the invention.In current embodiment, by the driving arrangement 1 of describing as the drive source of electric bicycle.Driving arrangement 1 is mounted to the wheel of electric bicycle the output actuating force corresponding to the bicyclist's of electric bicycle pedal force.
Driving arrangement 1 comprises as the rotating shaft 10 of fixed axis, electric machine casing 20, motor 30, deceleration device 50, as hub 70 and the one-way clutch 80 of rotatable body.
Rotating shaft 10 comprises the first rotating shaft 11 and the second rotating shaft 12 coaxially to each other.The first rotating shaft 11 and two-axle car 12 are fixed to respectively left front fork and the right front fork of electric bicycle.The first rotating shaft 11 that is shown in Fig. 1 upside comprises axle 13 and fixed head 14.Fixed head 14 extends radially outwardly from the end of axle 13.The fixed head 14 of the first rotating shaft 11 is fixed to electric machine casing 20(by bolt 15 and will describing after a while).The second rotating shaft 12 that is shown in the downside of Fig. 1 is fixed to electric machine casing 20 by nut 16.
Electric machine casing 20 is made up of for example aluminium.In addition, electric machine casing 20 comprises the second housing 22 that is constructed to the first cup-shaped housing 21 and is constructed to dish.The first housing 21 from the first rotating shaft side end face of the first housing 21, outstanding block 211 is fixed to the fixed head 14 of the first rotating shaft 11 by bolt 15 vertically.The first housing 21 comprises protecting of stator part 23 and rotor protection part 24.Protecting of stator part 23 covers the stator 31 of motor 30.Rotor protection part 24 is arranged on the radially inner side of protecting of stator part 23, and recessed towards rotor 40 sides vertically.
The second rotating shaft 12 is inserted in the hole of the mid portion that is formed on the second housing 22.The second housing 22 and the second rotating shaft 12 are fixed together by nut 16.
Motor 30 is mounted in for example brushless electric machine of the inner side of electric machine casing 20.Motor 30 comprises stator 31, rotor 40 and armature spindle 41.
Stator 31 comprises annular stator core 32, insulator 33 and coil 34.
The inner side of protecting of stator part 23 is made up and is fixed to by the through bolt 25 of the position between the first housing 21 and the second housing 22 to stator core 32 of magnetic material.
Coil 34 is wound to the slit (not shown) of stator core 32 by insulator 33.Coil 34 be known as end winding 341 from the outstanding end of stator core 32 vertically.
Coil 34 relative to each other connects by the bus 35 being arranged in the second rotating shaft side of end winding 341, and to form, Y connects or Δ connects.
As illustrated in fig. 1 and 2, rotor 40 is arranged in the radially inner side of stator 31, and rotatable with respect to stator 31.Rotor 40 comprises rotor core 42, magnet 43 and coupling part 44.Rotor core 42 is made up and is formed as to have the axial width of the axial width that equals stator core 32 of magnetic material.Magnet 43 is mounted to the hole being formed in rotor core 42.Magnet 43 forms the N utmost point and the S utmost point, and they are alternately arranged one by one along the direction of rotation of rotor core 42.Coupling part 44 is connected between rotor core 42 and armature spindle 41.Therefore, armature spindle 41 rotates integratedly with rotor 40.
An end of armature spindle 41 is rotatably mounted by the first housing 21 by bearing 45, and the other end of armature spindle 41 is rotatably mounted by the second housing 22 by bearing 46.Armature spindle 41 has the receiving opening 47 that is recessed into vertically and receives deceleration device 50 from first rotating shaft side direction the second rotating shaft side.
Magnetic sensor (not shown) is mounted to circuit board 48, and it is constructed to disc and is arranged in vertically in the second rotating shaft side of rotor 40.With the position of rotation of this magnetic sensor sensing rotor 40.In the time supplying induced current from being mounted to the wire harness 36 of the second housing 22 to coil 34 by bus 35 according to the position of rotation of rotor 40, stator core 32 produces rotating magnetic field.Like this, rotor 40 and armature spindle 41 rotate with respect to stator 31.
Two one-way clutch 80 are arranged in the inner side of receiving opening 47 of armature spindle 41.One side of each one-way clutch 80 is connected to armature spindle 41, and the opposite side of one-way clutch 80 is connected to the power shaft 55 of the first deceleration device 51, and this will describe after a while.That is to say, armature spindle 41, one-way clutch 80 and power shaft 55 radially overlap each other.In other words, armature spindle 41, a corresponding one-way clutch 80 and power shaft 55 are along radially arranging one by one.
Each one-way clutch 80 is formed as for example needle clutch (needle clutch).These two one-way clutch 80 arranged in series one by one vertically.
Each one-way clutch 80 comprises outer ring 81 and roller 82.Outer ring 81 is press fit into the inwall of the receiving opening 47 of armature spindle 41 regularly.The power shaft 55 of the first deceleration device 51 is inserted in the inner side of outer ring 81 of the position on the radially inner side of roller 82.
As shown in Figure 3, when armature spindle 41 and outer ring 81 are during along the direction rotation of the arrow A in Fig. 3, each roller 82 moves to the correspondence position of the dotted line B instruction in Fig. 3.Therefore, each roller 82 is connected between the inclined surface 83 and power shaft 55 of outer ring 81.Like this, the rotation of armature spindle 41 is passed to power shaft 55.
By contrast, when power shaft 55 is during along the direction rotation of the arrow C in Fig. 3, each roller 82 is arranged as the state of the solid line instruction in Fig. 3.Therefore, discharged being connected between the inclined-plane 83 of outer ring 81 and power shaft 55.Like this, the rotation that has stopped power shaft 55 is passed to armature spindle 41.
Here should be noted that the structure shown in Fig. 3 is an example of one-way clutch 80.
As depicted in figs. 1 and 2, deceleration device 50 is arranged between the first housing 21 and the first rotating shaft 11.Deceleration device 50 comprises the first deceleration device 51 and the second deceleration device 60.
The first deceleration device 51 is arranged in the inner side of the rotor protection part 24 of the housing 21 that is constructed to depression.Rotor protection part 24 is arranged in the radially inner side of the end winding 341 of stator 31.Specifically, the first deceleration device 51 is arranged in the radially inner side of the end winding 341 of stator 31, so that rotor protection part 24 is radially arranged between end winding 341 and the first deceleration device 51.
The first deceleration device 51 is for example epicyclic reduction gear units, and comprises the first central gear 52, the first planetary gear 53 and first ring generating gear 54.In the first deceleration device 51, the first central gear 52 forms input side, and the first planetary gear 53 forms outlet side.In addition, first ring generating gear 54 forms fixation side.
The first central gear 52 is fixed to the power shaft 55 of the rotation of the armature spindle 41 that receives the first housing 21.Alternatively, the first central gear 52 can form with power shaft 55.
In first ring generating gear 54; the each projection of projection 542(is outstanding radially outwardly) be engaged to respectively in the groove 241 being formed in rotor protection part 24, and described projection 542 is fixed to the radially inner side part (seeing Fig. 4 and Fig. 5) of rotor protection part 24 by screw 56.
The quantity of the first planetary gear 53 is for example three, and these three the first planetary gears 53 are arranged on the radially inner side of first ring generating gear 54.As shown in Figure 2, each the first planetary gear 53 comprises shaft component 531, bearing 532 and external tooth 533.External tooth 533 is according to being circular layout, and is connected to shaft component 531 by bearing 532.
The external tooth 533 of the first planetary gear 53 engages with the external tooth of the first central gear 52, and engages with the internal tooth of first ring generating gear 54.
The second rotating shaft side end of the shaft component 531 of each the first planetary gear 53 is fixed to lower support member 57, and the first rotating shaft side end of shaft component 531 is fixed to upper support member 58.
Lower support member 57 is connected to power shaft 55 by bearing 26, and is connected to the first housing 21 by bearing 27.
As shown in Figure 1, upper support member 58 comprises rotatable plate 581 and the second power shaft 582.The end of the shaft component 531 of each the first planetary gear 53 is fixed to rotatable plate 581.The second power shaft 582 extends towards the first rotating shaft side from rotatable plate 581.The second power shaft 582 is connected to the inner side part of the depression 17 of the first rotating shaft 11 by bearing 18.
Lower support member 57 and upper support member 58 are connected to each other by shaft component 531 and the screw 59 of the first planetary gear 53.
In the time being fixed to the first central gear 52 of power shaft 55 and rotating, each the first planetary gear 53 is around its axis rotation and rotate around the first central gear 52.The result reducing as the rotating speed of the rotation of power shaft 55, realize rotate (revolution) of each planetary gear 53, and the second power shaft 582 from upper support member 58 exports the second deceleration device 60 to by it.
The second deceleration device 60 is arranged in the side relative with motor 30 vertically of the first deceleration device 51.The external diameter of the second deceleration device 60 is greater than the external diameter of the first deceleration device 51.
The second deceleration device 60 is for example epicyclic reduction gear units, and comprises secondary sun wheel 61, the second planetary gear 62 and the second ring gear 63.In the second deceleration device 60, secondary sun wheel 61 forms input side, and the second planetary gear 62 forms fixation side.In addition, the second ring gear 63 forms outlet side.
Secondary sun wheel 61 is fixed to the second power shaft 582 of the rotation that receives the first deceleration device 51.Alternatively, secondary sun wheel 61 and the second power shaft 582 are integrally formed.
The second ring gear 63 is fixed to the inner radial of the hub 70 describing after a while by screw 64.
The quantity of the second planetary gear 62 is for example three, and these three the second planetary gears 62 are arranged on the radially inner side of the second ring gear 63.Each the second planetary gear 62 comprises shaft component 621, bearing 622 and external tooth 623.External tooth 623 is according to being circular layout, and is connected to shaft component 621 by bearing 622.
The external tooth 623 of the second planetary gear 62 engages with the external tooth of secondary sun wheel 61, and engages with the internal tooth of the second ring gear 63.
The second rotating shaft side end of the shaft component 621 of each the second planetary gear 62 is fixed to the corresponding aperture 541 of lower support member 57, and the first rotating shaft side end of shaft component 621 is fixed to the fixed head 14 of the first rotating shaft 11.In the case of the rigidity of rotor protection part 24 is higher, the second rotating shaft side end of the shaft component 621 of the second planetary gear 62 can be fixed to rotor protection part 24.
In the time being fixed to the secondary sun wheel 61 of the second power shaft 582 and rotating, each the second planetary gear 62 is around its axis rotation, so that the second ring gear 63 rotates.The result reducing as the rotating speed of the rotation of the second power shaft 582, realizes the rotation of the second ring gear 63, and is exported to hub 70.
Hub 70 is constructed to tubular, and is arranged on the outside of electric machine casing 20 and deceleration device 50, to make hub 70 rotatable with respect to electric machine casing 20 and deceleration device 50.
Hub 70 comprises: the first hub 71, and it is constructed to dish; With the second hub 72, it is constructed to tubular.Be connected to the first rotating shaft 11 at the first hub 71 shown in the upside of Fig. 1 by bearing 73.Be connected to the second housing 22 at the second hub 72 shown in the downside of Fig. 1 by bearing 74.The first hub 71 and the second hub 72 are fixed together by bolt 75.Therefore,, in the time that the rotation of the second deceleration device 60 exports the first hub 71 to from the second ring gear 63, the first hub 71 rotates together with the second hub 72.
The spoke of electric bicycle (not shown) can be connected to the hole 76 in the flange that is formed on hub 70.The spoke of electric bicycle is connected to tire by wheel rim.Like this, the rotation of motor 30 is passed to the wheel of electric bicycle by one-way clutch 80, deceleration device 50 and hub 70, so that the rotating of wheel of electric bicycle.
But in the time that electric bicycle moves along direction forward, the rotation of the wheel of electric bicycle stops by one-way clutch 80, and is not passed to motor 30.
Now, will the advantage of current embodiment be described.
(1) in current embodiment, a side of each one-way clutch 80 is connected to armature spindle 41, and the opposite side of one-way clutch 80 is connected to the power shaft 55 of the first deceleration device 51.
Like this, be arranged in the comparable situation between hub and the second deceleration device 60 with one-way clutch 80 compared with, the moment of torsion that is applied to one-way clutch 80 diminishes.Therefore, the size of one-way clutch 80 can reduce, and the size of driving arrangement 1 can reduce.
In addition, one-way clutch 80 is not connected directly to hub 70, thereby the gimp that can limit one-way clutch 80 leaks to outside.Therefore, can increase the sound insulation level of driving arrangement 1.
(2), in current embodiment, one-way clutch 80 is arranged in the inner side of the receiving opening 47 of armature spindle 41.
Therefore, one-way clutch 80, armature spindle 41 and power shaft 55 radially overlap each other.Therefore, compare with the comparable situation that armature spindle 41, one-way clutch 80 and deceleration device 50 are arranged vertically one by one, the axial dimension of driving arrangement 1 can reduce.
(3) in current embodiment, one-way clutch 80 is needle clutches, and these one-way clutch 80 are arranged vertically one by one.
Like this, the moment of torsion that is applied to each one-way clutch 80 scatter, thereby the size of one-way clutch 80 can reduce.
(4), in current embodiment, deceleration device 50 comprises the first deceleration device 51 and the second deceleration device 60.
Therefore, speed reducing ratio can increase.Therefore, the moment of torsion of exporting from motor 30 can reduce, and the size of motor 30 can reduce.
In addition,, according to current embodiment, the first deceleration device 51 is arranged on the radially inner side of the end winding 341 that is wrapped in stator 31 coil 34 around.
Like this, the axial dimension of driving arrangement 1 can reduce.
(5), in current embodiment, an end of the shaft component 621 of each the second planetary gear 62 is fixed to the first rotating shaft 11, and the other end of shaft component 621 is fixed to first ring generating gear 54 or electric machine casing 20.
Like this, do not need to be additionally provided for position between the first deceleration device 51 and the second deceleration device 60 and fix the member of the shaft component 621 of the second planetary gear 62.Therefore, the axial dimension of driving arrangement 1 can reduce.
(6), in current embodiment, planetary gear reducing mechanism is each for the first deceleration device 51 and the second deceleration device 60.Therefore, the rotatable shaft of deceleration device does not tremble, thereby can reduce the vibration of driving arrangement 1.
(other embodiment)
In the above-described embodiments, the driving arrangement as the drive source of electric bicycle has been described.In addition, in another embodiment, driving arrangement can be used as the drive source of various other types.
In above embodiment, the driving arrangement that uses brushless electric machine is described.In addition, in another embodiment, the motor using in driving arrangement can be the motor of another type, such as brush motor.
In above embodiment, the driving arrangement that uses epicyclic reduction gear unit is described.In addition, in another embodiment, can be the deceleration device of another type for the deceleration device of driving arrangement, such as cycloid reduction device.
In above embodiment, the driving arrangement that uses needle brake one-way clutch is described.In addition, in another embodiment, can be the one-way clutch of any other type for the one-way clutch of driving arrangement.For example, above-mentioned one-way clutch can be modified with respect to the structure of outer ring or roller or quantity, maybe can be revised as use cam clutch.
As mentioned above, the invention is not restricted to above embodiment, and can realize according to any other various ways within the scope of the invention.
Claims (6)
1. a driving arrangement, comprising:
Fixed axis (10);
Electric machine casing (20), is fixed to fixed axis (10);
Motor (30), comprising:
Stator (31), is fixed to electric machine casing (20);
Rotor (40), can rotate with respect to stator (31); And
Armature spindle (41), can rotate integratedly with rotor (40);
Deceleration device (50), comprises the power shaft (55) that receives rotation from armature spindle (41), and wherein, deceleration device (50) reduces the rotating speed of the rotation of power shaft (55), and the rotation that reduces of output speed;
Rotatable body (70), is constructed to tubularly, and rotatable with respect to electric machine casing (20), and wherein, rotatable body (70) rotates by the output of deceleration device (50); And
One-way clutch (80), has a side that is connected to armature spindle (41) and the opposite side that is connected to power shaft (55).
2. driving arrangement according to claim 1, is characterized in that, one-way clutch (80) is arranged in the inner side of the receiving opening (47) of the armature spindle (41) caving in vertically from deceleration device (50) side.
3. driving arrangement according to claim 1, is characterized in that, armature spindle (41), one-way clutch (80) and power shaft (55) are radially arranged one by one.
4. driving arrangement according to claim 1, is characterized in that, one-way clutch (80) is the needle clutch that is made as one of multiple needle clutches of arranging one by one vertically.
5. according to the driving arrangement described in any one of claim 1 to 4, it is characterized in that, deceleration device (50) comprising:
The first deceleration device (51), radially be arranged in the inner side of the end winding (341) that is wrapped in stator (31) coil (34) around, wherein, the first deceleration device (51) reduces the rotating speed of the rotation of power shaft (55), and the rotation that reduces of output speed; And
The second deceleration device (60), is arranged in the side relative with motor (30) of the first deceleration device (51), and the rotation that wherein the second deceleration device (60) reduces the rotating speed receiving from the first deceleration device (51) exports rotatable body (70) to.
6. driving arrangement according to claim 5, is characterized in that:
The first deceleration device (51) comprising:
The first central gear (52), is fixed to power shaft (55);
The first planetary gear (53), engages with the external tooth of the first central gear (52), and rotates around the first central gear (52); And
First ring generating gear (54), is arranged in the outside of the first planetary gear (53), and is fixed to electric machine casing (20), and wherein first ring generating gear (54) engages with the external tooth of the first planetary gear (53);
The second deceleration device (60) comprising:
Secondary sun wheel (61), rotates by rotating of the first planetary gear (53);
The second planetary gear (62), engages with the external tooth of secondary sun wheel (61), and rotatable around the rotation of the second planetary gear (62); And
The second ring gear (63), is arranged in the outside of the second planetary gear (62), and is fixed to rotatable body (70), and wherein the second ring gear (63) rotates by the rotation of the second planetary gear (62); And
The shaft component (621) of the second planetary gear (62) has an end that is fixed to fixed axis (10) and the other end that is fixed to first ring generating gear (54) or electric machine casing (20).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013028921A JP6006137B2 (en) | 2013-02-18 | 2013-02-18 | Drive device |
| JP2013-028921 | 2013-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103997158A true CN103997158A (en) | 2014-08-20 |
Family
ID=50070426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410054061.6A Pending CN103997158A (en) | 2013-02-18 | 2014-02-18 | Driving device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6006137B2 (en) |
| CN (1) | CN103997158A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107208760A (en) * | 2015-02-02 | 2017-09-26 | 世进Igb株式会社 | Power transmission |
| CN110546863A (en) * | 2017-03-24 | 2019-12-06 | 日本电产株式会社 | Electric motor |
| CN111886778A (en) * | 2018-03-13 | 2020-11-03 | 松下知识产权经营株式会社 | Motor unit and electric bicycle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3617729B2 (en) * | 1996-07-04 | 2005-02-09 | ヤマハ発動機株式会社 | Electric auxiliary vehicle |
| JPH11255177A (en) * | 1998-03-16 | 1999-09-21 | Yamaha Motor Co Ltd | Motor driven bicycle |
| JP3939862B2 (en) * | 1998-08-18 | 2007-07-04 | ヤマハ発動機株式会社 | Motor drive unit for electric bicycle |
| JP2005335536A (en) * | 2004-05-27 | 2005-12-08 | Sanyo Electric Co Ltd | Hub unit for electromotive vehicle wheel, and vehicle with the hub unit |
| KR101261892B1 (en) * | 2011-01-12 | 2013-05-07 | 박준신 | driving gear |
-
2013
- 2013-02-18 JP JP2013028921A patent/JP6006137B2/en not_active Expired - Fee Related
-
2014
- 2014-02-18 CN CN201410054061.6A patent/CN103997158A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107208760A (en) * | 2015-02-02 | 2017-09-26 | 世进Igb株式会社 | Power transmission |
| CN107208760B (en) * | 2015-02-02 | 2019-06-14 | 世进Igb株式会社 | Power transmission device |
| CN110546863A (en) * | 2017-03-24 | 2019-12-06 | 日本电产株式会社 | Electric motor |
| CN111886778A (en) * | 2018-03-13 | 2020-11-03 | 松下知识产权经营株式会社 | Motor unit and electric bicycle |
| CN111886778B (en) * | 2018-03-13 | 2023-09-19 | 松下知识产权经营株式会社 | Motor unit and electric bicycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6006137B2 (en) | 2016-10-12 |
| JP2014156218A (en) | 2014-08-28 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140820 |