CN203859659U - Motor - Google Patents
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- CN203859659U CN203859659U CN201420263349.XU CN201420263349U CN203859659U CN 203859659 U CN203859659 U CN 203859659U CN 201420263349 U CN201420263349 U CN 201420263349U CN 203859659 U CN203859659 U CN 203859659U
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- 238000004804 winding Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 19
- 230000002093 peripheral effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000004088 simulation Methods 0.000 description 7
- 230000008093 supporting effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Provided is a motor capable of reducing the volume generated in acceleration or deceleration of a rotor. In the motor (1), a magnet (6) forms four pairs of S poles and N poles at intervals with equal angles, a stator core (8) forms ten salient poles (80) at intervals with equal angles, one of the two salient poles (80) with an angle position deviation of 72 degrees of the plurality of salient poles (80) is a first salient pole (81) wound with first coils (76), and the other is a second salient pole (82) wound with second coils (77). The radial dimension of the first salient pole (81) and the second salient pole (82) is larger than the radial dimension of other salient poles (80), and the radial dimension of the winding portion of the first coils (76) relative to the first salient pole (81) and the radial dimension of the winding portion of the second coils (77) relative to the second salient pole (82) are larger than the radial dimension of other salient poles (80).
Description
Technical field
The prominent motor that is wound with coil on extremely of the utility model relates to a kind of stator core in the side face setting along magnet a plurality of prominent in extremely two.
Background technology
At automobile, with in the display unit such as taximeter and clock, some employings are provided with the structure (with reference to No. 2013-57567th, Japanese Laid-Open Patent Publication) of pointer at the output shaft of motor.About the motor using in described display unit, a plurality of prominent utmost point of a kind of side face along magnet configuration stator core had once been proposed, and in the prominent structure that is wound with coil on extremely of a plurality of prominent in extremely two (with reference to No. 4125371st, Japanese patent gazette).In the motor of recording for No. 4125371 in Japanese patent gazette, three pairs or five pairs S utmost points of outer peripheral face configuration and the N utmost point at magnet, be made as 8 by the number of the prominent utmost point, and in angle position, depart from 90 ° two and be wound with coil on dashing forward extremely.
The motor using in the display unit of recording for No. 2013-57567 about Japanese Laid-Open Patent Publication etc., require not only to obtain the volume producing when enough magnetic torques can also be reduced in rotor acceleration or deceleration, but the motor that Japanese patent gazette is recorded for No. 4125371 cannot fully meet described requirement.
Utility model content
In view of above problem, problem of the present utility model is to provide a kind of motor of the volume producing can be reduced in rotor acceleration or deceleration time.
In order to address the above problem, the feature of the motor that the utility model is related is that it has: rotor, and it has at side face along circumferentially replacing the magnet that equal angles compartment of terrain is provided with the S utmost point and the N utmost point, stator, it has stator core, the first coil and the second coil, across opposed a plurality of prominent utmost points edge, gap, be circumferentially disposed at described stator core with described side face, described the first coil is wound on described a plurality of prominent first prominent utmost point in extremely, described the second coil winding described a plurality of prominent in extremely along second circumferentially prominent extremely separated with the described first prominent utmost point, in described magnet, be formed with four pairs of described S utmost points and the described N utmost point, in described stator core, equal angles compartment of terrain is formed with ten described prominent utmost points, the angle position of the described first prominent utmost point and the described second prominent utmost point is along circumferentially departing from 72 °.
In the related motor of the utility model, magnet equal angles compartment of terrain is formed with four pairs of S utmost points and the N utmost point, and in stator core, equal angles compartment of terrain is formed with ten prominent utmost points.Therefore, the rotation of rotor can obtain enough magnetic torques.And, about the motor of described structure, by checking starting torque, with respect to the variation of electric angle, to find, than form three pairs or the five pairs of S utmost points and the N utmost point in magnet, in stator core, to be formed with the motor of eight prominent utmost points, the variation of starting torque is less.Therefore, because the vibration of rotor is less, the volume producing in the time of therefore can being reduced in rotor acceleration or deceleration, thus can realize low noise.
In the utility model, preferred described stator core forms by stacked multiple magnetic sheets.According to described structure, though prominent when extremely more, because magnetic sheet when magnetic sheet stamping-out being become to the shape of stator core is thinner, therefore can be efficiently and stamping-out magnetic sheet accurately.
In the utility model, preferably described a plurality of prominent extremely in, the radial dimension of the described first prominent utmost point and the described second prominent utmost point is than the radial ruler modest ability of other prominent utmost points, and described the first coil is dashed forward the radial dimension of winding part of the utmost point than the radial ruler modest ability of described other prominent utmost points with respect to the radial dimension of the winding part of the described first prominent utmost point and described the second coil with respect to described second.According to described structure, can fully guarantee the winding number of coil.
In the utility model, be preferably provided with the gear reduction of the rotation deceleration transmission that makes described rotor.According to described structure, need be at the outer setting gear reduction of motor.
In the related motor of the utility model, magnet equal angles compartment of terrain is formed with four pairs of S utmost points and the N utmost point, the medium angle intervals of stator core be formed with ten prominent utmost points.Therefore, the rotation of rotor can obtain enough magnetic torques.And, in the motor of described structure, by checking starting torque, with respect to the variation of electric angle, to find and in magnet, be formed with three pairs or the five pairs of S utmost points and the N utmost point, and comparing at the motor that stator core is formed with eight prominent utmost points, the variation of starting torque is less.Therefore,, because the vibration of rotor is less, therefore can reduce the volume that rotor produces when acceleration or deceleration, thereby can realize low noise.
Accompanying drawing explanation
Fig. 1 (a)～Fig. 1 (c) is the key diagram that has used motor of the present utility model.
Fig. 2 (a)～Fig. 2 (c) is the use of trying to achieve by simulation the has been shown chart of result of characteristic of motor of the present utility model.
Fig. 3 (a), Fig. 3 (b) are the key diagrams of the motor related with respect to comparative example of the present utility model.
Fig. 4 (a)～Fig. 4 (c) is the chart of result that the characteristic of the related motor of the comparative example of the present utility model 1 shown in the Fig. 3 (a) trying to achieve by simulation is shown.
Fig. 5 (a)～Fig. 5 (c) is the chart of result that the characteristic of the related motor of the comparative example of the present utility model 2 shown in the Fig. 3 (b) trying to achieve by simulation is shown.
Embodiment
Below, with reference to accompanying drawing to having used motor of the present utility model to describe.
(explanation of motor)
Fig. 1 (a)～Fig. 1 (c) is the key diagram that has used motor of the present utility model, and Fig. 1 (a) is the vertical view of motor, and Fig. 1 (b) is the end view of motor, and Fig. 1 (c) is the vertical view of stator etc.
As shown in Fig. 1 (a), Fig. 1 (b), the motor 1 of present embodiment has housing 3, by housing 3 supportings, is the stator 7 of the rotor 5 that can rotate and the surrounding that is configured in rotor 5.In the present embodiment, bolster 51 is fixed on housing 3, and rotor 5 support shaft 51 supportings are for rotating.Therefore, rotor 5 is supported as rotating by housing 3 by bolster 51.And motor 1 has the reduction gear 9 of the rotation deceleration transmission that makes rotor 5, described reduction gear 9 is also identical with rotor 5 and stator 7 to be supported by housing 3.In addition, reduction gear 9 is delivered to output shaft 90 by the rotation of rotor 5.
Rotor 5 have support shaft 51 supporting for the pinion 53 that can rotate, with pinion 53 integrated and outer peripheral face 60 (side face) along circumferentially alternately equal angles compartment of terrain be provided with the magnet 6 of the S utmost point and the N utmost point.In addition, the magnet 6 of present embodiment is cylindric.In the present embodiment, magnet 6 is integrated by insert-molding with pinion 53.Therefore, magnet 6 and pinion 53 combine by resinous plectane portion 50.In the present embodiment, magnet 6 is ferrite system.
Stator 7 comprises having with the outer peripheral face 60 (side face) of magnet 6 across the stator core 8 of the opposed a plurality of prominent utmost points 80 in gap, be wound on the first coil 76 of the prominent utmost point 81 of first in a plurality of prominent utmost points 80 and the second coil 77 that is wound on the prominent utmost point 82 of second in a plurality of prominent utmost points 80.In addition, in more detail, the first coil 76 is wound in the first prominent utmost point 81, the second coils 77 across insulating part 71 and is wound in the second prominent utmost point 82 across insulating part 72.In the end of insulating part 71, maintain the terminal 710 to two power supply use of the first coil 76 power supplies, in the end of insulating part 72, maintain the terminal 720 to two power supply use of the second coil 77 power supplies.The coiling that is wound with the first coil 76 at terminal 710,720 starts and the coiling of the reel end of finishing and the second coil 77 starts and the end of the end of reeling.
Reduction gear 9 has second gear 92 in the first gear 91 and large footpath, described the first gear 91 has the large diameter gear 91a with pinion 53 engagements, second gear 92 in described large footpath and the small-diameter gear 91b of the first gear 91 engagement, output shaft 90 is fixed on the second gear 92.
In the motor 1 so forming, the driving pulse of each phase is provided by 710,720 pairs of the first coils 76 of terminal and the second coil 77, make rotor 5 rotations, and by reduction gear 9, the rotation of rotor 5 is delivered to output shaft 90.And while using motor 1 to form pointer display unit, pointer (not shown) is fixed on output shaft 90.In described display unit, by offer the driving pulse of the first coil 76 and the second coil 77 via terminal 710,720, switch the angle position of pointer.Now, to terminal 710,720, provide the driving pulse that positive rotation is used that pointer is rotated clockwise to behind target location, to terminal 710,720, provide the driving pulse that stops use, can make pointer stop at target location.And, under this state, if the driving pulse of providing reverse rotation to use to terminal 710,720 can make pointer be rotated counterclockwise another target location.
(structure of magnet 6 and stator core 8)
As shown in Fig. 1 (c), in the motor 1 of present embodiment, magnet 6 is provided with the S utmost point and the N utmost point at outer peripheral face 60 along circumferentially replacing equal angles compartment of terrain.In the present embodiment, in magnet 6, be formed with four pairs of S utmost points and the N utmost point.Therefore, due to magnet 6 medium angle intervals be formed with the S utmost point and the N utmost point ends of the earth altogether, therefore along the circumferentially adjacent S utmost point and the angle position of the N utmost point, depart from 45 °.
The part that disposes magnet 6 of stator core 8 becomes peristome 84, on the inner peripheral edge of described peristome 84, is circumferentially formed with towards the outstanding a plurality of prominent utmost point 80 of the outer peripheral face 60 of magnet 6 equal angles compartment of terrain.The end of radially inner side and the outer peripheral face 60 of magnet 6 of the prominent utmost point 80 are opposed across gap, and the end of radially inner side and the gap size between the outer peripheral face 60 of magnet 6 of the prominent utmost point 80 all equate in a plurality of prominent utmost points 80.In the present embodiment, the number of the prominent utmost point 80 is ten, along the angle position of 80 of the circumferentially adjacent prominent utmost points, mutually departs from 36 °.In other words, in stator core 8, equal angles compartment of terrain is formed with ten prominent utmost points 80.
In the stator core 8 so forming, two the prominent utmost points 80 of 72 ° of departing from along circumferential angle position in a plurality of prominent utmost points 80 are used as the first prominent utmost point 81 and the second prominent utmost point 82.; in a plurality of prominent utmost points 80; the insulating part 71 that in two prominent utmost points 80 of 72 ° one is departed from angle position becomes the tubular that is wound with the first coil 76 is embedded in the first prominent utmost point 81 in its outside, and another insulating part 72 that becomes the tubular that is wound with the second coil 77 is embedded in the second prominent utmost point 82 in its outside.In other words, the first prominent utmost point 81 and the second prominent utmost point 82 depart from 72 ° along circumferential angle position.At this, the angle position of the first prominent utmost point 81 and the second prominent utmost point 82 is departed from 72 ° of angle positions that refer to the circumferential center of the first prominent utmost point 81 and the circumferential center of the second prominent utmost point 82 and is departed from 72 °.In addition, between the first prominent utmost point 81 and the second prominent utmost point 82, there is the prominent utmost point 80 of the coil of not reeling.
In the present embodiment, the radial dimension of the prominent utmost point 81 of first in a plurality of prominent utmost points 80 and the second prominent utmost point 82 is than the radial ruler modest ability of other prominent utmost points 80.Therefore, the first coil 76 with respect to the radial dimension of the winding part of the first prominent utmost point 81 and the second coil 77 with respect to the radial dimension of the winding part of the second prominent utmost point 82 than the radial ruler modest ability of other prominent utmost points 80.In addition, the radial dimension of the first prominent utmost point 81 and the second prominent utmost point 82 is equal, and the first coil 76 equates with the radial dimension of the second coil 77 with respect to the winding part of the second prominent utmost point 82 with respect to the radial dimension of the winding part of the first prominent utmost point 81.
From connecting portion 85 described later, the length dimension towards the outstanding prominent utmost point 80 of the outer peripheral face 60 of magnet 6 all equates the radial dimension of the prominent utmost point 80 beyond the prominent utmost point 81 of first in a plurality of prominent utmost points 80 and the second prominent utmost point 82, therefore the end of the radial outside of the prominent utmost point 80 beyond the first prominent utmost point 81 and the second prominent utmost point 82 in the position of magnet 6 at a distance of same distance.On the other hand, because the radial dimension of the first prominent utmost point 81 and the second prominent utmost point 82 is than the radial ruler modest ability of other prominent utmost points 80, therefore the position of leaving to radial outside from magnet 6 is leaned in the end of the radial outside of the end of the radial outside of the first prominent utmost point 81 and the second prominent utmost point 82 than the end of the radial outside of other prominent utmost points 80.
At this, stator core 8 has the connecting portion 85 of frame shape of the end of the radial outside that connects all prominent utmost point 80 comprise the first prominent utmost point 81 and the second prominent utmost point 82, and the width dimensions of described connecting portion 85 equates along complete cycle.Therefore, connecting portion 85 becomes and the concentric arc sections 86 of magnet 6 beyond the angular range that is formed with the first prominent utmost point 81 and the second prominent utmost point 82.On the other hand, the angular range that is formed with the first prominent utmost point 81 of connecting portion 85 becomes to the outstanding rectangular portion 87 of the rectangular frame shape of radial outside, and the angular range that is formed with the second prominent utmost point 82 becomes to the outstanding rectangular portion 88 of the rectangular frame shape of radial outside.And, between rectangular portion 87,88, becoming the V word section 89 that is V word shape depression to radially inner side, the prominent utmost point 80 between the first prominent utmost point 81 and the second prominent utmost point 82 is outstanding towards radially inner side from the inner edge of described V word section 89.
In the present embodiment, stator core 8 is tabular, stacked multiple magnetic sheets that are punched as above-mentioned shape, consists of.In other words, stator core 8 forms by stacked multiple magnetic sheets.
(evaluation result of motor 1)
Fig. 2 (a)～Fig. 2 (c) is the use of trying to achieve by simulation the has been shown chart of result of characteristic of motor 1 of the present utility model, Fig. 2 (a) is the chart that electric angle and the relation between starting torque (detent torque) of motor 1 are shown, Fig. 2 (b) is the chart that electric angle and the relation between magnetic torque of motor 1 are shown, and Fig. 2 (c) illustrates the chart of lee sajous graphics that expression is radially applied to the electromagnetic force of rotor 5.In addition, in Fig. 2 (c), take with a direction of the pivot axis quadrature of rotor 5 is X-direction, and the power that is applied to rotor 5 along described X-direction of take is transverse axis.And in Fig. 2 (c), take with the pivot axis of rotor 5 and the direction of X-direction quadrature is Y direction, the power that is applied to rotor 5 along described Y direction of take is the longitudinal axis.And at the motor 1 for evaluating, stator core 8 becomes above-mentioned shape stacked three to form by the non-oriented electromagnetic steel sheet having stamping-out that is 0.5mm by thickness.The internal diameter of magnet 6 is 6mm, and external diameter is 8mm, and axial dimension is 3mm.Winding wire coiling 2200 circles that the first coil 76 and the second coil 77 are 0.055mm by diameter respectively form, and the resistance value of one phase is 220 Ω.Driving voltage is 5V.
Fig. 3 (a), Fig. 3 (b) are the key diagrams of the motor 1 related with respect to comparative example of the present utility model, in this motor 1, also by simulation, obtain characteristic.In the related motor of the first comparative example shown in Fig. 3 (a), at magnet 6, form three pairs of S utmost points and the N utmost point, in stator core 8, equal angles compartment of terrain is formed with eight prominent utmost points 80.And the first prominent utmost point 81 that is wound with the first coil 76 departs from 90 ° with the angle position that is wound with the second prominent utmost point 82 of the second coil 77.
In the related motor of the second comparative example shown in Fig. 3 (b), at magnet 6, be formed with five pairs of S utmost points and the N utmost point, and in stator core 8, be formed with eight prominent utmost points 80.And the first prominent utmost point 81 that is wound with the first coil 76 departs from 90 ° with the angle position that is wound with the second prominent utmost point 82 of the second coil 77.At this, the prominent utmost point 80 unequal interval ground form, but when the circumferential center of a prominent utmost point in the first prominent utmost point 81 and the second prominent utmost point 82 is opposed with the boundary member between the S utmost point and the N utmost point, the circumferential center of the circumferential center of another prominent utmost point and the circumferential center of the S utmost point or the N utmost point is opposed, does not therefore hinder the generation of magnetic torque.
Fig. 4 (a)～Fig. 4 (c) is the chart of result that the characteristic of the related motor of the first comparative example of the present utility model shown in the Fig. 3 (a) trying to achieve by simulation is shown, Fig. 4 (a) is the chart that electric angle and the relation between starting torque of motor are shown, Fig. 4 (b) is the chart that electric angle and the relation between driving torque of motor are shown, and Fig. 4 (c) illustrates the chart of lee sajous graphics that expression is radially applied to the electromagnetic force of rotor 5.Fig. 5 (a)～Fig. 5 (c) is the chart of result that the characteristic of the related motor of the second comparative example of the present utility model shown in the Fig. 3 (b) trying to achieve by simulation is shown, Fig. 5 (a) is the chart that electric angle and the relation between starting torque of motor are shown, Fig. 5 (b) is the chart that electric angle and the relation between driving torque of motor are shown, and Fig. 5 (c) illustrates the chart of lee sajous graphics that expression is radially applied to the electromagnetic force of rotor 5.
In addition, Fig. 4 (a) and Fig. 5 (a) are the data corresponding with Fig. 2 (a), Fig. 4 (b) and Fig. 5 (b) are the data corresponding with Fig. 2 (b), and Fig. 4 (c) and Fig. 5 (c) are the data corresponding with Fig. 2 (c).
At this, the related motor of the second comparative example shown in the motor that the first comparative example shown in Fig. 3 (a) is related and Fig. 3 (b) with use motor 1 of the present utility model identical aspect the size of magnet 6 and the basic structures such as size of stator core 8, only have the number of poles of magnet 6 not identical with the number of the prominent utmost point 80.
Result shown in result shown in result shown in comparison diagram 2 (a) and Fig. 4 (a) and Fig. 5 (a) is known, than the related motor of the first comparative example and the related motor of the second comparative example, in using motor 1 of the present utility model, the variable quantity of starting torque is less.Therefore, the external force that is applied to rotor 5 is less, so can say that vibration is also less.
Next, result shown in result shown in comparison diagram 2 (b) and Fig. 4 (b) is known, than the related motor of the first comparative example, in using motor 1 of the present utility model, magnetic torque is less, even so, also can obtain the required enough magnetic torques of rotation of rotor 5.And in using motor 1 of the present utility model, the variation of the magnetic torque motor related with the first comparative example is identical.
In addition, the result shown in the result shown in comparison diagram 2 (b) and Fig. 5 (b), magnetic torque on level terms.And, than the related motor of the first comparative example, use the variation of magnetic torque of motor 1 of the present utility model slightly large, but both differences are less, also can say that both equate.
Result shown in result shown in comparison diagram 2 (c) and Fig. 4 (c) is known, and than the related motor of the first comparative example, in using motor 1 of the present utility model, the external force that is radially applied to rotor 5 is less.Therefore,, than the related motor of the first comparative example, in using motor 1 of the present utility model, owing to being radially applied to, the external force of rotor 5 is less, therefore can say that vibration is less.
In addition, the result shown in the result shown in comparison diagram 2 (c) and Fig. 5 (c) is known, than the related motor of the first comparative example, in using motor 1 of the present utility model, the power that is radially applied to rotor 5 is slightly large, but both differences are less, also can say that both equate.
(the main effect of present embodiment)
As described above, in the motor 1 of present embodiment, magnet 6 equal angles compartment of terrains are formed with four pairs of S utmost points and the N utmost point, and in stator core 8, equal angles compartment of terrain is formed with ten prominent utmost points 80.Therefore, can obtain the required magnetic torque of rotation of motor 1.And, motor 1 about described structure, by checking starting torque with respect to the variation of electric angle etc., find as illustrated with reference to Fig. 2 (a), Fig. 4 (a) and Fig. 5 (a), than be formed with three pairs or the five pairs of S utmost points and the N utmost point at magnet 6, the related motor of comparative example 1,2 that is formed with eight prominent utmost points 80 in stator core 8, the variation of starting torque is less.Therefore,, in the motor 1 of present embodiment, because the vibration of rotor 5 is less, therefore can reduce the volume that rotor 5 produces when acceleration or deceleration, thereby can realize low noise.
And stator core 8 forms by stacked multiple magnetic sheets.Therefore, as in the embodiment described in, even if the prominent utmost point 80 is more, because magnetic sheet when magnetic sheet stamping-out being become to the shape of stator core 8 is thinner, therefore also stamping-out magnetic sheet accurately.
And, the radial dimension of the prominent utmost point 81 of first in a plurality of prominent utmost points 80 and the second prominent utmost point 82 is than the radial ruler modest ability of other prominent utmost points 80, and the first coil 76 is larger than the radial dimension of other prominent utmost points 80 with respect to the radial dimension of the winding part of the second prominent utmost point 82 with respect to radial dimension and second coil 77 of the winding part of the first prominent utmost point 81.Therefore, can obtain reliably the required magnetic torque of rotation of motor 1.
And, owing to being provided with the gear reduction 9 of the rotation of the transmission rotor 5 that slows down at motor 1, therefore need be at the outer setting gear reduction 9 of motor 1.Therefore, only, by output shaft 90, pointer is installed in the motor 1 of present embodiment, just can form the key component of display unit, thereby can realize the miniaturization of display unit.
(other execution modes)
In the above-described embodiment, for rotor 5 is positioned at the structure of the inner side of stator 7, but the motor that is arranged in the outside of stator 7 at rotor 5 also can be applied the utility model.Now, the prominent utmost point 80 is the opposed structure of inner peripheral surface (side face) outstanding from stator core 8 to radial outside and magnet 6.
Claims (4)
1. a motor, is characterized in that,
Described motor has:
Rotor, it has at side face along circumferentially replacing the magnet that equal angles compartment of terrain is provided with the S utmost point and the N utmost point; And
Stator, it has stator core, the first coil and the second coil, across opposed a plurality of prominent utmost points edge, gap, be circumferentially disposed at described stator core with described side face, described the first coil is wound on described a plurality of prominent first prominent utmost point in extremely, described the second coil winding described a plurality of prominent in extremely along second circumferentially prominent extremely separated with the described first prominent utmost point
In described magnet, be formed with four pairs of described S utmost points and the described N utmost point,
In described stator core, equal angles compartment of terrain is formed with ten described prominent utmost points,
The angle position of the described first prominent utmost point and the described second prominent utmost point is along circumferentially departing from 72 °.
2. motor according to claim 1, is characterized in that,
Described stator core forms by stacked multiple magnetic sheets.
3. motor according to claim 1 and 2, is characterized in that,
The radial dimension of described a plurality of prominent described first prominent utmost point in extremely and the described second prominent utmost point is than the radial ruler modest ability of other prominent utmost points,
Described the first coil with respect to the radial dimension of the winding part of the described first prominent utmost point and described the second coil with respect to the radial dimension of the winding part of the described second prominent utmost point than the radial ruler modest ability of described other prominent utmost points.
4. motor according to claim 1 and 2, is characterized in that,
Described motor is provided with the gear reduction of the rotation deceleration transmission that makes described rotor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-123287 | 2013-06-12 | ||
| JP2013123287A JP6208985B2 (en) | 2013-06-12 | 2013-06-12 | motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859659U true CN203859659U (en) | 2014-10-01 |
Family
ID=51609496
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420263349.XU Expired - Fee Related CN203859659U (en) | 2013-06-12 | 2014-05-22 | Motor |
| CN201410217952.9A Pending CN104242584A (en) | 2013-06-12 | 2014-05-22 | Motor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410217952.9A Pending CN104242584A (en) | 2013-06-12 | 2014-05-22 | Motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6208985B2 (en) |
| CN (2) | CN203859659U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021035985A1 (en) * | 2019-08-23 | 2021-03-04 | 广东美的生活电器制造有限公司 | Rotor, electric motor, electric motor assembly, food processor, and air supply device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617378U (en) * | 1992-07-27 | 1994-03-04 | 株式会社コパル | PM type step motor |
| FR2754953B1 (en) * | 1996-10-21 | 1999-02-26 | Moving Magnet Tech | POLYPHASE MOTOR, PARTICULARLY FOR DRIVING A DISPLAY HAND |
| JP2002354777A (en) * | 2001-03-23 | 2002-12-06 | Tdk Corp | Stepping motor |
| JP4206713B2 (en) * | 2002-09-05 | 2009-01-14 | 株式会社デンソー | Indicating instrument |
| JP5020649B2 (en) * | 2007-01-31 | 2012-09-05 | 日本電産コパル株式会社 | Stepping motor and camera diaphragm device |
| US20080224573A1 (en) * | 2007-03-13 | 2008-09-18 | I-Te Chang | Step motor |
-
2013
- 2013-06-12 JP JP2013123287A patent/JP6208985B2/en not_active Expired - Fee Related
-
2014
- 2014-05-22 CN CN201420263349.XU patent/CN203859659U/en not_active Expired - Fee Related
- 2014-05-22 CN CN201410217952.9A patent/CN104242584A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP6208985B2 (en) | 2017-10-04 |
| CN104242584A (en) | 2014-12-24 |
| JP2014241684A (en) | 2014-12-25 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20200522 |