CN205864090U - Motor, motor apparatus and dial indicator display device - Google Patents
Motor, motor apparatus and dial indicator display device Download PDFInfo
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- CN205864090U CN205864090U CN201620730655.9U CN201620730655U CN205864090U CN 205864090 U CN205864090 U CN 205864090U CN 201620730655 U CN201620730655 U CN 201620730655U CN 205864090 U CN205864090 U CN 205864090U
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A kind of motor, the motor apparatus with this motor and dial indicator display device, the torque of described motor is big and noise is little.If motor (1) has rotor (5), in the structure of stator (6), with the magnet pole widths of Magnet (50) as D1, with the width of salient pole (61) as D2, then the width D 1 of salient pole be Magnet (50) magnet pole widths D2 more than 50%, described rotor (5) has the Magnet (50) of S pole and the most circumferentially alternating setting of N, described stator (6) has stator core (60) and coil (9), multiple salient pole (61) is circumferentially configured in described stator core (60), the outer peripheral face of the terminal part of described salient pole (61) and Magnet (50) is across gap in opposite directions, the described coil (9) two (salient pole 61b in multiple salient poles (61), 61f) configuration.Like this, by the reasonable wide by salient pole (61), it is possible to realize the motor that torque is big and noise is little.
Description
Technical field
This utility model relates to a kind of motor, motor apparatus and dial indicator display device, described motor by rotor and
The stator of the periphery being arranged in rotor is contained in housing.
Background technology
In meter for car device etc. represents device, sometimes use such structure: motor is rotated through deceleration
Gear mechanism passes to output shaft, and installs pointer in the end of output shaft.In this case, motor uses following knot sometimes
Structure, i.e. has: rotor, and described rotor has the Magnet of cylindrical shape；Stator, described stator arrangement is in the periphery of rotor；And shell
Body, described housing accommodates rotor and stator, and stator has stator core and coil, and described stator core has the week along Magnet
Multiple salient poles of face configuration, described coil is wound in two in multiple salient pole.Patent Document 1 discloses this horse
Reach.
Patent documentation 1: Japanese Patent 2013-57567 publication
Utility model content
Utility model problem to be solved
Motor requirements for display devices such as meter for car devices has sufficiently large torque.Further, this motor
The salient pole shape of stator core can bring impact to magnetic flux distribution, this is known, and it has been proposed that by by salient pole
Shape rationalization realizes improving motor characteristics.But, generally, if we know raising torque, then can increase and make an uproar
Sound, and do not propose to improve torque and reduce the stator core shape of noise.
In view of the above problems, problem of the present utility model is to provide a kind of torque is big and noise is little motor, has this
Plant motor apparatus and the dial indicator display device of motor.
Solve the technical scheme of problem
In order to solve above-mentioned problem, the motor involved by this utility model is characterised by, it has: rotor, described turn
Son has the Magnet of S pole and the most circumferentially alternating setting of N；And stator, described stator has stator core and coil, described
Circumferentially being configured with multiple salient pole in stator core, the outer peripheral face of the terminal part of described salient pole and described Magnet is across gap phase
To, two configurations in the plurality of salient pole of the described coil, the width of described salient pole is the magnet pole widths of described Magnet
More than 50%.
According to this utility model, by salient pole shape is rationalized, it is possible to realize the motor that torque is big and noise is little.
In this utility model, the preferably number of poles of Magnet is eight.By this structure, it is possible to realize that torque is high and noise is little
Motor.
In this utility model, the number of salient poles of the most described stator core is six.According to this structure, it is possible to realize turning
Square is high and motor that noise is little.
In this utility model, the width of the most described salient pole is more than the 60% of the magnet pole widths of described Magnet.According to
This structure, in view of coil size and to salient pole install installation time, it is possible in attainable scope, it is achieved torque
The motor that high and noise is little.
In this utility model, the angle interval of the most multiple salient poles is unequal.Further, preferably around configuring described line
Time between one and described S pole and described N pole in two described salient poles of circle in opposite directions, another center with described S pole or
With the center of described N pole in opposite directions.If like this, then bring sufficiently large magnetic torque can to the rotation of rotor.
Motor involved by this utility model can be used in motor apparatus, and described motor apparatus has: wheels, described wheels
Transmit the rotation of described rotor；And output shaft, the described wheels that are rotated through of described rotor are transferred to described output shaft.
Motor apparatus involved by this utility model can be used in dial indicator display device, and at this dial indicator display device
In, pointer is driven by described output shaft.
Utility model effect
According to this utility model, by salient pole shape is rationalized, it is possible to realize torque is big and noise is little motor, motor
Device and dial indicator display device.
Accompanying drawing explanation
Fig. 1 (a), Fig. 1 (b) are the axonometric chart applying motor apparatus of the present utility model.
Fig. 2 is the sectional view applying motor apparatus of the present utility model.
Fig. 3 (a) is the axonometric chart of the first housing assembling stator, and Fig. 3 (b) is the axonometric chart of the first housing.
Fig. 4 is the plane graph of Magnet and stator core.
Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) are the chart of the relation illustrating the width of salient pole and motor characteristics.
(description of reference numerals)
1 ... motor
2 ... housing
4 ... wheels
5 ... rotor
6 ... stator
7 ... coil winding frame
8 ... terminal pins
9 ... coil
10 ... output shaft
11 ... pointer
21 ... the first housing
22 ... the second housing
25 ... location division
26 ... location division
28 ... support
29 ... through hole
41 ... the first gear
41a ... large diameter gear portion
41b ... small-diameter gear portion
42 ... the second gear
48 ... fulcrum
50 ... Magnet
51 ... rotary shaft
58 ... little gear
59 ... plectane portion
60 ... stator core
61 (61a to 61f) ... salient pole
64 ... peristome
65a, 65b ... connecting portion
66 ... circular hole
67 ... protuberance
68 ... elongated hole
69a, 69b ... rectangular portion
70 ... bobbin winder bracket body
90 ... winding wire
100 ... motor apparatus
200 ... dial indicator display device
211 ... side plate
211a ... stage portion
211b ... edge
212 ... end plate
213 ... cylinder portion
214 ... cylindrical portion
215 ... axis hole
216 ... axis hole
217 ... cylindrical portion
219 ... protuberance
221 ... side plate
222 ... end plate
223 ... cylinder portion
225 ... axis hole
226 ... axis hole
229 ... hook portion
261 ... breach
262A, 262B ... guide part
263 ... recess
264 ... jut
CW ... clockwise
D1 ... the magnet pole widths of Magnet
D2 ... the width of salient pole
L ... the axis of output shaft
L0 ... the center of rotation axis of rotor
L1 ... first direction
L2 ... second direction
Detailed description of the invention
Hereinafter, carry out applying motor of the present utility model, motor apparatus and dial indicator display device referring to the drawings
Explanation.
(overall structure)
Fig. 1 (a) is the axonometric chart applying motor apparatus 100 of the present utility model, and Fig. 1 (b) is for illustrating from motor apparatus
The axonometric chart of 100 states taking off the first housing 21.Further, Fig. 2 is the section view applying motor apparatus 100 of the present utility model
Figure (the A-A sectional view of Fig. 1 (a)).The motor apparatus 100 of present embodiment is for dial indicator display device 200.Pointer-type display
Device 200 has motor apparatus 100 and the pointer 11 driven by motor apparatus 100.Motor apparatus 100 has motor 1, transmission horse
Reach the wheels 4 of the rotation of 1 and the output shaft 10 of the rotation of transmission wheels 4.Pointer 11 is connected with output shaft 10.
(motor)
Motor 1 has: housing 2；Rotor 5, described rotor 5 is supported as rotating by housing 2；And stator 6, described fixed
Son 6 is arranged in rotor 5 around.In this manual, dashing forward from housing 2 in the direction axis L of output shaft 10 extended
Go out to have the side of output shaft 10 as first direction L1, with the side contrary with the side protruding output shaft 10 as second direction
L2.Further, owing to the center of rotation axis L0 of rotor 5 is parallel with the axis L of output shaft 10, the therefore center of rotation axle of rotor 5
The side of line L0 is towards first direction L1, and the opposite side of center of rotation axis L0 is towards second direction L2.
Housing 2 has: the first housing 21, and described first housing 21 is arranged on the first direction L1 in axis L direction；And
Second housing 22, described second housing 22 is arranged in second direction L2 in axis L direction.First housing 21 has: end plate
212, described end plate 212 is provided with rotor 5 and stator 6；And side plate 211, described side plate 211 is from end plate 212
Outer peripheral edge hold up to second direction L2.The cylinder portion 213 of supporting output shaft 10 it is formed with in end plate 212.Output shaft 10 is from cylinder
Portion 213 highlights towards the first direction L1 in axis L direction.
Second housing 22 has: end plate 222, described end plate 222 in the direction of the axisl with the end plate of the first housing 21
Portion 212 is in opposite directions；And side plate 221, described side plate 221 is holded up to first direction L1 from the outer peripheral edge of end plate 222.?
Multiple positions of the side plate 211 of one housing 21 are formed with protuberance 219, the second housing 22 side plate 221 with the first shell
The position of protuberance 219 correspondence of body 21 is formed with hook portion 229.If make hook portion 229 engage with protuberance 219, so that the first shell
Body 21 engages with the second housing 22, then can constitute housing 2.
As shown in Fig. 1 (b), Fig. 2, rotor 5 has and is supported the rotary shaft 51 for rotating by housing 2.Rotor 5 has:
Little gear 58, described little gear 58 is fixed on the end of second direction L2 of rotary shaft 51；And the Magnet 50 of cylindrical shape.At magnetic
The outer peripheral face of ferrum 50, S pole and N pole replace equiangularly spaced arrangement.In the present embodiment, Magnet 50 and little gear 58 are by embedding
Part molding is integrated, and Magnet 50 is combined together with the plectane portion 59 that little gear 58 is made by resin.Plectane portion 59
It is fixed on rotary shaft 51.
As in figure 2 it is shown, the end plate 212 at the first housing 21 is formed with the cylindrical portion 214 highlighted towards second direction L2.
The overhang bracket being formed with the first direction L1 by the rotary shaft 51 of rotor 5 in cylindrical portion 214 is the axis hole 215 that can rotate.
On the other hand, the end plate 222 at the second housing 22 is formed with the overhang bracket of second direction L2 by the rotary shaft 51 of rotor 5
For the axis hole 225 that can rotate.
The rotation of rotor 5 is slowed down and is delivered to output shaft 10 by wheels 4.As in figure 2 it is shown, wheels 4 and rotor 5 and
Stator 6 is identical, is supported by housing 2.Wheels 4 have the first gear 41 and the second gear 42.First gear 41 has and rotor 5
The large diameter gear portion 41a and the small-diameter gear portion 41b that engages with the second gear 42 of little gear 58 engagement.Output shaft 10 is by press-in
Or insert moulding is fixed in the second gear 42.Output shaft 10 is by the cylinder portion 213 of the first housing 21 and the cylinder portion of the second housing 22
223 supportings are for rotating.First gear 41 is supported as rotating by fulcrum 48.The two ends of fulcrum 48 are formed on the first shell
The axis hole 216 of body 21 and the axis hole 226 being formed at the second housing 22 keep.The axis hole 216 of the first housing 21 is formed at from end plate
The cylindrical portion 217 that portion 212 is prominent to second direction L2.
Fig. 3 (a) is the axonometric chart of the first housing 21 assembling stator 6, and Fig. 3 (b) is the axonometric chart of the first housing 21.And
And, Fig. 4 is the plane graph of Magnet and stator core.As shown in Fig. 1 (b), Fig. 3 (a), stator 6 has stator core 60, described
Stator core 60 has the outer peripheral face multiple salient poles 61 (salient pole 61a to 61f) in opposite directions across gap and Magnet 50.Further, fixed
Son 6 has: coil winding frame 7, described coil winding frame 7 is assemblied in salient pole 61b, 61f (main pole) in multiple salient pole 61；And
Coil 9, described coil 9 is wound in around salient pole 61b, 61f across coil winding frame 7.In the present embodiment, salient pole 61
Quantity is six, and in Magnet 50, it is right that S pole and N pole form four.Further, salient pole 61f, 61b (main pole) is relative to the rotation of rotor 5
Rotating shaft 51 is arranged in the side by the first gear 41.
Coil winding frame 7 has: the bobbin winder bracket body 70 of insulating properties, and described bobbin winder bracket body 70 is wound with formation coil 9
Winding wire 90；And two terminal pins 8, described terminal pins 8 is held in bobbin winder bracket body 70.The salient pole of stator core 60
61b, 61f are inserted into the inner side of bobbin winder bracket body 70, as a result of which it is, configuration coil 9 around salient pole 61b, 61f.Online
The end of astragal 90 is wound onto and carries out soldering again after an end of the prominent terminal pins 8 of bobbin winder bracket body 70.Terminal
Another end of pin 8 is formed through the through hole 29 (with reference to Fig. 3 (b)) of the end plate 212 in the first housing 21, and from first
Housing 21 is to first direction L1 prominent (with reference to Fig. 2).The distribution equipment (not shown) such as wiring substrate highlight with from the first housing 21
Terminal pins 8 connect.
The part being configured with rotor 5 of stator core 60 becomes peristome 64, and from the inner peripheral of this peristome 64 to magnetic
The outer peripheral face of ferrum 50 protrudes multiple salient pole 61.The terminal part of the radially inner side of salient pole 61 is across the outer peripheral face in gap Yu Magnet 50
In opposite directions.Salient pole 61b, 61f (main pole) of being provided with coil winding frame 7 of stator core 60 are than other salient poles 61a, 61c to 61e
(auxiliary pole) is long.Therefore, stator core 60 the part being formed with salient pole 61b, 61f (main pole) have in the form of a substantially rectangular shape to footpath
Rectangular portion 69a stretched out laterally, 69b.Salient pole 61b, 61f are prominent to radially inner side from the outer peripheral portion of rectangular portion 69a, 69b.
Rectangular portion 69a, 69b link together in side connection portion 65a by the first gear 41 relative to peristome 64.It is not configured with
One (salient pole 61a) in the salient pole 61 (auxiliary pole) of coil 9 is prominent to radially inner side from connecting portion 65a.Further, relative to opening
Portion 64 is provided with the connecting portion 65b connecting other salient poles 61c to 61e (auxiliary pole) in the side contrary with the first gear 41.Salient pole 61c
Prominent to radially inner side from connecting portion 65b to 61e (auxiliary pole).
Stator core 60 is by the parts of tabulars multiple for the magnetic sheet stacking that is die-cut into above-mentioned shape.At stator core
The root of the salient pole 61a being positioned at wheels 4 side of 60 has been formed about circular hole 66.Further, stator core 60 is being positioned at the phase of wheels 4
The position of the salient pole 61d of anti-side has and is radially oriented protuberance 67 protruding outside.It is formed with elongated hole 68 at protuberance 67.
First housing 21 has the location division 25,26 positioned stator core 60 at two positions.Location division 25 shape
Become end plate 212.In the present embodiment, supply the axis hole 216 of fulcrum 48 press-in of the first gear 41 as 25, location division
The effect of waving (with reference to Fig. 3 (b)).If it is to say, the fulcrum 48 that will be pressed in axis hole 216 is through the circular hole of stator core 60
66, then, as shown in Fig. 3 (a), stator core 60 is positioned by fulcrum 48.
Another location division 26 is formed at the side plate 211 of the first housing 21.Side plate 211 has: stage portion 211a, institute
State stage portion 211a and be formed at outer peripheral face in the half-way holded up towards second direction L2；And edge 211b, described edge
211b holds up to second direction L2 from the inner peripheral of stage portion 211a.Edge 211b is formed at the all-round of side plate 211.Location division
26 have: breach 261, and edge 211b is cut away by described breach 261 in the position corresponding with the protuberance 67 of stator core 60；One
To guide part 262A, 262B, the pair of guide part 262A, 262B dash forward in two lateral second directions L2 of the circumference of breach 261
Go out；Recess 263, described recess 263 is formed at stage portion 211a with the width identical with breach 261；And jut 264, institute
State jut 264 and highlight in mediad second direction L2 of the circumference of recess 263.
As shown in Fig. 3 (a), if the protuberance 67 of stator core 60 being embedded in breach 261 and protuberance 67 being put
Enter recess 263, then form jut 264 and be embedded into the state in elongated hole 68.Location division 26 is by embedding projection in elongated hole 68
Portion 264, and in the direction of rotation centered by fulcrum 48, stop the rotation of stator core 60.
(assembling of motor)
When assembling motor 1, first the fulcrum 48 of the first gear 41 is pressed into the axis hole 216 being formed at the first housing 21
In.Further, the rotary shaft 51 of rotor 5 is pressed in axis hole 215.Afterwards, as shown in Fig. 3 (a), stator core 60 will be installed
Coil winding frame 7, coil 9, the stator 6 of terminal pins 8 are assembled into the first housing 21.Now, first the end of fulcrum 48 is inserted
Enter in the circular hole 66 of stator core 60, then protuberance 67 is inserted between a pair guide part 262A, 262B.Further, will
In the through hole 29 at four positions that terminal pins 8 is inserted into the end plate 212 being formed at the first housing 21.
The position overlapping at the root portion of salient pole 61b, 61f with stator core 60 of the first housing 21 is formed from end plate
The support 28 that portion 212 is prominent to second direction L2.Stator core 60 is supported by the recess 263 of protuberance 67 with location division 26
Connect, and the root portion of salient pole 61b, 61f abuts with support 28, and be supported by the direction of the axisl.Further, if protuberance
67 abut with recess 263, then the jut 264 of location division 26 is embedded in elongated hole 68 and positions stator core 60.
After stator 6 is assembled into the first housing 21, then rotor 5 is assembled into the first housing 21.Afterwards, will be fixed with
The output shaft 10 of two gears 42 is installed to the cylinder portion 213 of the first housing 21.And, so that the first gear 41 and little gear 58 and
First gear 41 is installed on fulcrum 48 by the second intermeshing mode of gear 42.Finally, the second housing 22 is made to cover first
Housing 21 also combines, thus constitutes housing 2.If making the second housing 22 be combined with the first housing 21, then as shown in Fig. 1 (a), the
The inner circumferential side of the edge 211b of one housing 21 and the side plate 221 of a pair guide part 262A, 262B and the second housing 22 is fitted together to.
Further, as in figure 2 it is shown, protuberance 67 is in the direction of the axisl by side plate 211 and the side plate of the second housing 22 of the first housing 21
Portion 221 clamps.Thus, stator core 60 is positioned in the direction of the axisl.
(configuration of salient pole)
In the motor apparatus 100 of present embodiment, the S pole of the Magnet 50 in motor 1 and N pole are equiangularly spaced formation
Four pairs, in stator core 60, salient pole 61 forms six.Salient pole 61 unequal interval configures, if the most adjacent salient pole
The angle of 61 is spaced with salient pole 61a as starting point, then along the direction CW that turns clockwise shown in Fig. 4 be formed as 56.25 °, 56.25 °,
67.5°、67.5°56.25°、56.25°。
Like this, if two salient poles 61f, 61b of angle position deviation 112.5 ° in the circumferential are used as main pole, then exist
In the case of Magnet 50 is eight poles, at the circumferential center of a main pole of salient pole 61b, the 61f (main pole) being configured with coil 9
And time between S pole and N pole in opposite directions, the boundary member i.e. and between S pole and N pole in opposite directions time, another main pole circumference center
With S pole circumference center or with N pole circumference center in opposite directions.Therefore, it is possible to bring enough excitations to the rotation of rotor 5
Torque.Further, if each interval of the most adjacent salient pole 61 is set as above-mentioned value, the then change of detent torque
Little.Therefore, in the motor apparatus 100 of present embodiment, the vibration of rotor 5 is few.Therefore, it is possible to reduce rotor 5 when rotated
The volume produced such that it is able to realize low noise.
In motor 1, motor apparatus 100 and the dial indicator display device 200 so constituted, when by terminal pins 8 to
When coil 9 is powered, rotor 5 rotates, and this is rotated through the shown wheels 4 such as Fig. 2 and is passed to output shaft 10.Therefore, with defeated
The pointer 11 that shaft 10 connects rotates.Now, by switching the angle of pointer 11 to the number of drive pulses of coil 9 input regulation
Position, and make it stop after making pointer 11 rotate to target location clockwise.Further, provided that reverse rotation is used
Driving pulse, then pointer can be made to rotate to another target location counterclockwise.
(rationalization of salient pole shape)
The width of six salient poles 61 (61a to 61f) of stator core 60 is identical.Further, six salient poles 61 each from end
End is the most identical to the thickness of root.If here, the magnet pole widths of Magnet 50 is set D1, the width of salient pole 61 being set to D2, then
The stator core 60 of present embodiment is formed in the way of meeting following condition (1).Condition (1) illustrates that the width D 2 of salient pole is magnetic
More than the 50% of magnet pole widths D1 of ferrum 50.
0.5≤D2/D1…(1)
The width D 2 that this utility model personnel make multiple salient pole 61 according to the structure of the motor 1 of present embodiment is different
Sample measures motor characteristics.Specifically, the external diameter using Magnet 50 is 8mm, and number of magnetic poles is that the rotor of eight (i.e. has four
To S pole and the rotor of N pole) as rotor 5.It is to say, magnet pole widths D1 of Magnet 50 is set to 8mm × π/8=3.14mm.
Further, the width D 2 using the salient pole 61 of stator core 60 is these five types of 0.8mm, 1mm, 1.3mm, 1.6mm, 1.9mm
Stator is as stator 6.The quantity of salient pole 61 is six, and as mentioned above unequal interval configuration, and makes coil 9 be surrounded on wherein two
Individual salient pole (salient pole 61b, 61f).Further, the combination of all of D1 Yu D2 it is directed to measure the startup voltage of motor 1, noise
(volume that i.e. rotor 5 produces when rotated), cogging torque.Voltage is started with 100pps and 200pps both velocity determinations,
Velocity determination noise with 1000pps.
Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) are the chart of the relation between width D 2 and the motor characteristics illustrating salient pole 61.Figure
5 (a) illustrates the impact that the width D 2 of salient pole 61 is brought to startup voltage, and Fig. 5 (b) illustrates that the width D 2 of salient pole 61 is brought to noise
Impact, Fig. 5 (c) illustrates the impact that the width D 2 of salient pole 61 is brought to cogging torque.Here, the chart of Fig. 5 (a) to Fig. 5 (c)
The width D 2 of use salient pole 61 is as transverse axis, but the transverse axis of Fig. 5 (a) to Fig. 5 (c) can also replace with the width D 2/ of salient pole 61
The value of magnet pole widths D1.It is to say, in the case of magnet pole widths D1 is 3.14mm, the width D 2 of salient pole 61 be 0.8mm,
Data when 1mm, 1.3mm, 1.6mm, 1.9mm be respectively equivalent to width D 2/ magnet pole widths D1 of salient pole 61 be 0.25 (25%),
Data when 0.32 (32%), 0.41 (41%), 0.51 (51%), 0.61 (61%).
As shown in Fig. 5 (a), the width D 2 at salient pole 61 is less than in the range of 1.6mm, no matter with 100pps's and 200pps
Which speed, if the width D 2 of salient pole 61 becomes big, then starts voltage and reduces.Start voltage and reduce the torque meaning motor 1
Become big.On the other hand, in the scope that width D 2 is more than 1.6mm of salient pole 61, the value starting voltage does not changes.Namely
Saying, in the motor 1 of present embodiment, even if the width D 2 of salient pole 61 is set to more than 1.6mm, torque also will not raise again.
It follows that in order to increase torque, as long as the width D 2 of salient pole 61 to be arranged on more than 1.6mm (i.e. width D 2/ magnetic of salient pole 61
Pole width D 1 is substantially more than 50%).
As shown in Fig. 5 (b), the noise of motor 1 reduces when the width D 2 of salient pole becomes big.Further, cogging torque is at salient pole
Width D 2 reduce when becoming big.It is to say, understand in the motor 1 of present embodiment, noise and cogging torque are along with salient pole
The value of width D 2/ magnet pole widths D1 become big and reduce.Owing to cogging torque becomes torque pulsation, it can thus be assumed that turn
The instability that rotates of son 5 diminishes along with the minimizing of cogging torque, thus noise reduces.
Can be seen that to the motor characteristics shown in Fig. 5 (c) according to Fig. 5 (a), in the motor 1 of present embodiment, at Magnet
Number of poles is that in the case of the salient pole number of eight and stator core is six, the width to salient pole 61 exceedes the magnet pole widths of Magnet
Till 50%, start voltage and reduce (i.e. torque rising) along with the width expanding salient pole, and noise reduces.At this utility model
In, owing to using this structure, therefore, it is possible to realize that torque is high and noise and the little motor of cogging torque.
Here, in the case of reducing noise and cogging torque further, additionally it is possible to the width D 2 of salient pole is arranged
More than 1.9mm (i.e., it is possible to the width D 2 of salient pole 61 is arranged on more than the 60% of magnet pole widths D1).It addition, if it is considered that
The size of coil 9 and operability time coil 9 is installed to salient pole 61 (61b, 61f), then can not expand salient pole unlimitedly
Width D 2, but can the shape of stator core 60 in the embodiment, the width D 2 of salient pole is increased to 1.9mm.Therefore, logical
Cross and use this shape, it is possible to realize that torque is high and noise and the little motor of cogging torque.
(action effect)
As it has been described above, the motor 1 of present embodiment is in the structure with rotor 5, stator 6, if by the magnetic of Magnet 50
Pole width is set to D1, and the width of salient pole 61 is set to D2, then the width D 2 of salient pole be Magnet 50 magnet pole widths D1 50% with
On, described rotor 5 has S pole and the Magnet 50 of the most circumferentially alternating setting of N, and described stator 6 has stator core 60 and coil
9, described stator core 60 circumferentially configures multiple salient pole 61, the terminal part of described salient pole 61 and the outer peripheral face of Magnet 50 every
Gap in opposite directions, two (salient pole 61b, 61f) configuration in multiple salient poles 61 of described coil 9.Like this, by by salient pole 61
The 2-in-1 physics and chemistry of width D, it is possible to realize the motor that torque is high and noise is little.
(other embodiments)
In the above-described embodiment, for motor apparatus 100 being applied to the example of dial indicator display device 200, but also
This utility model can be applied to the device in addition to the motor apparatus 100 of dial indicator display device.
Claims (10)
1. a motor, it is characterised in that
Described motor has:
Rotor, described rotor has the Magnet of S pole and the most circumferentially alternating setting of N；And
Stator, described stator has stator core and coil, is circumferentially configured with multiple salient pole, institute in described stator core
Stating the outer peripheral face of the terminal part of salient pole and described Magnet across gap in opposite directions, in the plurality of salient pole two join described coil
Put,
The width of described salient pole is more than the 50% of the magnet pole widths of described Magnet.
Motor the most according to claim 1, it is characterised in that
The width of described salient pole is more than the 60% of the magnet pole widths of described Magnet.
Motor the most according to claim 1, it is characterised in that
The number of poles of described Magnet is eight.
Motor the most according to claim 3, it is characterised in that
The width of described salient pole is more than the 60% of the magnet pole widths of described Magnet.
Motor the most according to claim 3, it is characterised in that
The number of salient poles of described stator core is six.
Motor the most according to claim 5, it is characterised in that
The width of described salient pole is more than the 60% of the magnet pole widths of described Magnet.
7. according to the motor described in any one in claim 1 to 6, it is characterised in that
The angle interval of the plurality of salient pole is unequal.
Motor the most according to claim 7, it is characterised in that
When a salient pole in two the described salient poles configuring described coil is with time between described S pole and described N pole in opposite directions,
The center of another salient pole and described S pole or with the center of described N pole in opposite directions.
9. a motor apparatus, it has the motor described in any one in claim 1 to 8, the feature of described motor apparatus
Being, it has:
Wheels, described wheels transmit the rotation of described rotor；And
Output shaft, the described wheels that are rotated through of described rotor are transferred to described output shaft.
10. a dial indicator display device, it has the motor apparatus described in claim 9, described dial indicator display device
It is characterised by,
Pointer is driven by described output shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-139287 | 2015-07-13 | ||
| JP2015139287A JP2017022892A (en) | 2015-07-13 | 2015-07-13 | Motor, motor device, and pointer type display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205864090U true CN205864090U (en) | 2017-01-04 |
Family
ID=57646115
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620730655.9U Expired - Fee Related CN205864090U (en) | 2015-07-13 | 2016-07-12 | Motor, motor apparatus and dial indicator display device |
| CN201610545654.1A Pending CN106357017A (en) | 2015-07-13 | 2016-07-12 | Motor, motor device, and pointer type display device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610545654.1A Pending CN106357017A (en) | 2015-07-13 | 2016-07-12 | Motor, motor device, and pointer type display device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017022892A (en) |
| CN (2) | CN205864090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357017A (en) * | 2015-07-13 | 2017-01-25 | 日本电产三协株式会社 | Motor, motor device, and pointer type display device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3142626A1 (en) | 2022-11-30 | 2024-05-31 | Moving Magnet Technologies | Space-saving two-phase motor |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06209552A (en) * | 1992-10-09 | 1994-07-26 | Oriental Motor Co Ltd | Motor with built-in magnetic position detector |
| JPH11234990A (en) * | 1998-02-12 | 1999-08-27 | Okuma Corp | Permanent magnet motor |
| JP3422982B2 (en) * | 2000-10-31 | 2003-07-07 | エフ・ディ−・ケイ株式会社 | Stepping motor |
| JP2008086064A (en) * | 2006-09-26 | 2008-04-10 | Jtekt Corp | Brushless motor |
| DE102013007747A1 (en) * | 2013-05-07 | 2014-11-13 | Minebea Co., Ltd. | Stator for an electric machine |
| JP2014241685A (en) * | 2013-06-12 | 2014-12-25 | 日本電産サンキョー株式会社 | Motor |
| JP6140537B2 (en) * | 2013-06-12 | 2017-05-31 | 日本電産サンキョー株式会社 | motor |
| CN104638799B (en) * | 2013-11-15 | 2018-01-05 | 日本电产三协株式会社 | Motor |
| JP2017022892A (en) * | 2015-07-13 | 2017-01-26 | 日本電産サンキョー株式会社 | Motor, motor device, and pointer type display device |
-
2015
- 2015-07-13 JP JP2015139287A patent/JP2017022892A/en active Pending
-
2016
- 2016-07-12 CN CN201620730655.9U patent/CN205864090U/en not_active Expired - Fee Related
- 2016-07-12 CN CN201610545654.1A patent/CN106357017A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357017A (en) * | 2015-07-13 | 2017-01-25 | 日本电产三协株式会社 | Motor, motor device, and pointer type display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017022892A (en) | 2017-01-26 |
| CN106357017A (en) | 2017-01-25 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20200712 |
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| CF01 | Termination of patent right due to non-payment of annual fee |