CN106357017A - Motor, motor device, and pointer type display device - Google Patents
Motor, motor device, and pointer type display device Download PDFInfo
- Publication number
- CN106357017A CN106357017A CN201610545654.1A CN201610545654A CN106357017A CN 106357017 A CN106357017 A CN 106357017A CN 201610545654 A CN201610545654 A CN 201610545654A CN 106357017 A CN106357017 A CN 106357017A
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- Prior art keywords
- pole
- motor
- magnet
- salient pole
- width
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- 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
Abstract
The invention discloses a motor, a motor device employing the motor, and a pointer type display device, wherein the motor is large in torque and low in noises. If the motor (1) is in a structure with a rotor (5) and a stator (6), the magnetic pole width of magnets (50) is D1 and the width of salient poles (61) is D2, the width D1 of the salient poles is 50% or more of the magnetic pole width D2 of the magnets. The rotor (5) has an S pole and an N pole and magnets arranged alternately in the circumferential direction. The stator (6) has a stator core (60) and a coil (9), wherein a plurality of salient poles (61) are arranged in the stator core (60) along the circumferential direction. The tail portions of the salient poles (61) face the outer peripheral surface of the magnets (50) with gaps inbetween, and the coil (9) winds on two (salient poles 61b, 61f) of the plurality of salient poles (61). In this way, the width of the salient poles (61) is rationalized, thereby realizing a motor having a large torque and a low noise.
Description
Technical field
The present invention relates to a kind of motor, motor apparatus and dial indicator display device, described motor is by rotor and configuration
Stator in the periphery of rotor is contained in housing.
Background technology
Represent in device in meter for car device etc., sometimes adopt 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 is tied using following sometimes
Structure, that is, have: 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 poles.Patent Document 1 discloses this horse
Reach.
Patent documentation 1: Japanese Patent 2013-57567 publication
Content of the invention
Invent problem to be solved
Motor requirements for display devices such as meter for car devices have sufficiently large torque.And, 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 is rationalized to realize improving motor characteristics.But, generally, if we know to improve torque, 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, the problem of the present invention is to provide a kind of torque big and the little motor of noise, has this horse
The motor apparatus reaching and dial indicator display device.
Solve the technical scheme of problem
In order to solve above-mentioned problem, motor involved in the present invention is characterised by, it has: rotor, described rotor tool
There is the Magnet of s pole and the extremely circumferentially alternating setting of n；And stator, described stator has stator core and coil, in described stator
Circumferentially it is configured with multiple salient poles, the outer peripheral face of the terminal part of described salient pole and described Magnet is opposite across gap, institute in iron core
State in the plurality of salient pole two configurations of coil, the width of described salient pole be the magnet pole widths of described Magnet 50% with
On.
According to the present invention, by rationalizing salient pole shape, it is capable of the torque little motor of noise greatly.
In the present invention, it is preferred to the number of poles of Magnet is eight.By this structure, it is capable of that torque is high and the little horse of noise
Reach.
In the present invention, it is preferred to the number of salient poles of described stator core is six.According to this structure, it is capable of torque high
And the little motor of noise.
In the present invention, it is preferred to the width of described salient pole is more than the 60% of the magnet pole widths of described Magnet.According to this knot
Structure, during the installation install in the size in view of coil and to salient pole, can in attainable scope, realize torque high and
The little motor of noise.
In the present invention, it is preferred to the angle interval of multiple salient poles is unequal.And, preferably around the described coil of configuration
Between one of two described salient poles and described s pole and described n pole opposite when, another center with described s pole or with institute
The center stating n pole is opposite.If like this, bring sufficiently large magnetic torque can to the rotation of rotor.
Motor involved in the present invention can be used in motor apparatus, and described motor apparatus have: wheel group, described wheel group transmission
The rotation of described rotor；And output shaft, the described wheel group that is rotated through of described rotor is transferred to described output shaft.
Motor apparatus involved in the present invention can be used in dial indicator display device, and in this dial indicator display device,
Pointer is driven by described output shaft.
Invention effect
According to the present invention, by rationalizing salient pole shape, it is capable of the torque little motor of noise, motor apparatus greatly
And dial indicator display device.
Brief description
Fig. 1 (a), Fig. 1 (b) are the axonometric chart of the motor apparatus applying the present invention.
Fig. 2 is the sectional view of the motor apparatus applying the present invention.
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 ... housings
4 ... wheel groups
5 ... rotors
6 ... stators
7 ... coil winding frames
8 ... terminal pins
9 ... coils
10 ... output shafts
11 ... pointers
21 ... first housings
22 ... second housings
25 ... location divisions
26 ... location divisions
28 ... supports
29 ... through holes
41 ... first gears
41a ... large diameter gear portion
41b ... small-diameter gear portion
42 ... second gears
48 ... fulcrums
50 ... Magnet
51 ... rotary shafts
58 ... little gears
59 ... plectane portions
60 ... stator cores
61 (61a to 61f) ... salient pole
64 ... peristomes
65a, 65b ... connecting portion
66 ... circular holes
67 ... protuberances
68 ... elongated holes
69a, 69b ... rectangular portion
70 ... bobbin winder bracket bodies
90 ... coil lines
100 ... motor apparatus
200 ... dial indicator display devices
211 ... side plates
211a ... stage portion
211b ... edge
212 ... end plate
213 ... cylinder portions
214 ... cylindrical portion
215 ... axis holes
216 ... axis holes
217 ... cylindrical portion
219 ... protuberances
221 ... side plates
222 ... end plate
223 ... cylinder portions
225 ... axis holes
226 ... axis holes
229 ... hook portions
261 ... breach
262a, 262b ... guide part
263 ... recesses
264 ... juts
Cw ... is clockwise
The magnet pole widths of d1 ... Magnet
The width of d2 ... salient pole
The axis of l ... output shaft
The center of rotation axis of l0 ... rotor
L1 ... first direction
L2 ... second direction
Specific embodiment
Hereinafter, referring to the drawings motor, motor apparatus and the dial indicator display device applying the present invention is illustrated.
(overall structure)
Fig. 1 (a) is the axonometric chart of the motor apparatus 100 applying the present invention, and Fig. 1 (b) is to illustrate to take from motor apparatus 100
The axonometric chart of the state of lower first housing 21.And, Fig. 2 is the sectional view (Fig. 1 (a) of the motor apparatus 100 applying the present invention
A-a sectional view).The motor apparatus 100 of present embodiment are used for dial indicator display device 200.Dial indicator display device 200 has
There are motor apparatus 100 and the pointer 11 being driven by motor apparatus 100.Motor apparatus 100 have motor 1, the rotation of transmission motor 1
Wheel group 4 and transfer wheel group 4 rotation output shaft 10.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 configuration is around rotor 5.In this manual, dashing forward from housing 2 in the direction axis l of output shaft 10 being extended
The side going out to have output shaft 10 as first direction l1, with the side contrary with the side protruding output shaft 10 as second direction
l2.And, center of rotation axis l0 due to rotor 5 is parallel with the axis l of output shaft 10, the therefore Pivot axle of rotor 5
Towards first direction l1, the opposite side of center of rotation axis l0 is towards second direction l2 for the side of line l0.
Housing 2 has: the first housing 21, and described first housing 21 configures on the first direction l1 in axis l direction；And
Second housing 22, described second housing 22 configures 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.It is formed with the cylinder portion 213 of supporting output shaft 10 in end plate 212.Output shaft 10 is from cylinder
Portion 213 projects towards the first direction l1 in axis l direction.
Second housing 22 has: end plate 222, described end plate 222 end plate with the first housing 21 on axis l direction
Portion 212 is opposite；And side plate 221, described side plate 221 holds 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, in the side plate 221 of the second housing 22 and first shell
The corresponding position of protuberance 219 of body 21 is formed with hook portion 229.If make hook portion 229 engage with protuberance 219, so that first shell
Body 21 is engaged with the second housing 22, then can constitute housing 2.
As shown in Fig. 1 (b), Fig. 2, rotor 5 has the rotary shaft 51 being supported by housing 2 as rotating.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.In magnetic
The outer peripheral face of ferrum 50, s pole replaces equiangularly spaced arrangement with n pole.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 shown in Fig. 2 the end plate 212 in the first housing 21 is formed with the cylindrical portion 214 projecting towards second direction l2.
Being formed with the overhang bracket of the first direction l1 of 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 in the second housing 22 is formed with the overhang bracket of second direction l2 of the rotary shaft 51 of rotor 5
For the axis hole 225 that can rotate.
Wheel group 4 is slowed down to the rotation of rotor 5 and is delivered to output shaft 10.As shown in Fig. 2 wheel group 4 and rotor 5 and
Stator 6 is identical, is supported by housing 2.Wheel group 4 has first gear 41 and second gear 42.First gear 41 has and rotor 5
The large diameter gear portion 41a and the small-diameter gear portion 41b engaging with second gear 42 of little gear 58 engagement.Output shaft 10 passes through press-in
Or insert moulding is fixed in second gear 42.Output shaft 10 is by the cylinder portion in the cylinder portion 213 of the first housing 21 and the second housing 22
223 support as rotating.First gear 41 is supported as rotating by fulcrum 48.The two ends of fulcrum 48 are formed on 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
Portion 212 cylindrical portion prominent to second direction l2 217.
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 opposite multiple salient poles 61 (salient pole 61a to 61f) of outer peripheral face across gap and Magnet 50.And, it is 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 poles 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.And, salient pole 61f, 61b (main pole) are with respect to the rotation of rotor 5
Rotating shaft 51 configures in the side by 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
Coil line 90；And two terminal pins 8, described terminal pins 8 are 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, 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 terminal pins 8 that bobbin winder bracket body 70 projects.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 such as wiring substrate (not shown) projects 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 poles 61.The terminal part of the radially inner side of salient pole 61 is across the outer peripheral face in gap and Magnet 50
In opposite directions.Stator core 60 salient pole 61b, 61f (main pole) of coil winding frame 7 are installed 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, 69b stretched out laterally.Salient pole 61b, 61f are prominent to radially inner side from the outer peripheral portion of rectangular portion 69a, 69b.
Rectangular portion 69a, 69b links together in side connection portion 65a by first gear 41 with respect to peristome 64.It is not configured with
One of the salient pole 61 (auxiliary pole) of coil 9 (salient pole 61a) is prominent to radially inner side from connecting portion 65a.And, with respect 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 first gear 41.Salient pole 61c
Prominent to radially inner side from connecting portion 65b to 61e (auxiliary pole).
Stator core 60 is the part that the magnetic sheet being punched into above-mentioned shape is laminated multiple tabulars.In stator core
The root of the 60 salient pole 61a positioned at wheel group 4 side has been formed about circular hole 66.And, stator core 60 is in the phase positioned at wheel group 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 in protuberance 67.
First housing 21 has the location division 25,26 stator core 60 being positioned at two positions.Location division 25 shape
Become end plate 212.In the present embodiment, for first gear 41 fulcrum 48 press-in axis hole 216 as location division 25
The effect of waving (with reference to Fig. 3 (b)).If that is, the fulcrum 48 that will be pressed in axis hole 216 passes 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 corresponding position of protuberance 67 with stator core 60；One
To guide part 262a, 262b, two lateral second directions l2 of the pair of guide part 262a, 262b circumference in breach 261 are dashed forward
Go out；Recess 263, described recess 263 is to be formed at stage portion 211a with breach 261 identical width；And jut 264, institute
Mediad second direction l2 stating the circumference in recess 263 for the jut 264 projects.
As shown in Fig. 3 (a), if the protuberance 67 of stator core 60 being embedded in breach 261 and putting protuberance 67
Enter recess 263, then form jut 264 and be embedded into the state in elongated hole 68.Location division 26 passes through to embed projection in elongated hole 68
Portion 264, and the rotation of stator core 60 is stoped on the direction of rotation centered on fulcrum 48.
(assembling of motor)
When assembling motor 1, first the fulcrum 48 of first gear 41 is pressed into the axis hole 216 being formed at the first housing 21
In.And, 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 of guide part 262a, 262b.And, will
Terminal pins 8 are inserted in the through hole 29 at four positions of the end plate 212 being formed at the first housing 21.
It is formed with from end plate in the first housing 21 position overlapping with the root portion of salient pole 61b, 61f of stator core 60
Portion 212 support prominent to second direction l2 28.Stator core 60 is supported with the recess 263 of location division 26 by protuberance 67
Connect, and the root portion of salient pole 61b, 61f is abutted with support 28, and be supported by axis l direction.And, if protuberance
67 are abutted with recess 263, then the jut 264 of location division 26 is embedded in elongated hole 68 and stator core 60 is positioned.
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 first gear 41 and little gear 58 and
First gear 41 is installed on fulcrum 48 by the intermeshing mode of second gear 42.Finally, the second housing 22 is made to cover first
Housing 21 simultaneously combines, thus constituting housing 2.If making the second housing 22 be combined with the first housing 21, such as shown in Fig. 1 (a), the
The edge 211b of one housing 21 and a pair of guide part 262a, 262b are chimeric with the inner circumferential side of the side plate 221 of the second housing 22.
And, as shown in Fig. 2 protuberance 67 on axis l direction by the side plate of the side plate 211 of the first housing 21 and the second housing 22
Portion 221 clamps.Thus, stator core 60 is positioned on axis l direction.
(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 in equiangularly spaced formation
Four pairs, in stator core 60, salient pole 61 forms six.Salient pole 61 unequal interval configures, if salient pole adjacent in the circumferential
61 angle is spaced with salient pole 61a as starting point, then the direction cw that turns clockwise shown in along 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 112.5 ° of angle position deviation in the circumferential are used as main pole,
In the case that Magnet 50 is eight poles, at the center of the circumference of a main pole of salient pole 61b, the 61f (main pole) being configured with coil 9
When and s pole and n pole between in opposite directions, when that is, the boundary member and s pole and n pole between is opposite, the center of the circumference of another main pole
Center or opposite with the center of the circumference of n pole with the circumference of s pole.Therefore, it is possible to bring enough excitations to the rotation of rotor 5
Torque.And, if each interval of salient pole 61 adjacent in the circumferential is set as above-mentioned value, then the 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 producing is such that it is able to realize low noise.
In such motor 1 constituting, motor apparatus 100 and dial indicator display device 200, when by terminal pins 8 to
During coil 9 power supply, rotor 5 rotates, and this is rotated through the wheel group 4 shown in Fig. 2 etc. and is passed to output shaft 10.Therefore, with defeated
The pointer 11 that shaft 10 connects rotates.Now, switch the angle of pointer 11 by the number of drive pulses to coil 9 input regulation
Position, and so that it is stopped after making pointer 11 rotate to target location clockwise.And, 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.And, six salient poles 61 each from end
Hold the thickness of root all identical.If here, the magnet pole widths of Magnet 50 are set d1, the width of salient pole 61 is 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 d2 of salient pole is magnetic
More than the 50% of magnet pole widths d1 of ferrum 50.
0.5≤d2/d1…(1)
The present invention staff makes the different sample of width d2 of multiple salient poles 61 according to the structure of the motor 1 of present embodiment
To measure motor characteristics.Specifically, the external diameter using Magnet 50 is 8mm, and number of magnetic poles is that the rotor of eight (has four couples of s
Pole and the rotor of n pole) as rotor 5.That is, magnet pole widths d1 of Magnet 50 are set to 8mm × π/8=3.14mm.And
And, the width d2 using the salient pole 61 of stator core 60 is determining of this five types of 0.8mm, 1mm, 1.3mm, 1.6mm, 1.9mm
Son is as stator 6.The quantity of salient pole 61 is six, and unequal interval configuration as described above, and makes coil 9 be surrounded on two of which
Salient pole (salient pole 61b, 61f).And, be directed to all of d1 and d2 combine to measure the startup voltage of motor 1, noise (i.e.
The volume that rotor 5 produces when rotated), cogging torque.Voltage is started with 100pps and 200pps both velocity determinations, with
The velocity determination noise of 1000pps.
Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) are the chart illustrating the relation between the width d2 of salient pole 61 and motor characteristics.Figure
5 (a) illustrates to starting the impact that voltage brings, Fig. 5 (b), the width d2 of salient pole 61 illustrates that the width d2 of salient pole 61 brings to noise
Impact, Fig. 5 (c) illustrates the impact that the width d2 of salient pole 61 brings to cogging torque.Here, the chart of Fig. 5 (a) to Fig. 5 (c)
The width d2 that salient pole 61 is used is as transverse axis, but the transverse axis of Fig. 5 (a) to Fig. 5 (c) can also replace with the width d2/ of salient pole 61
The value of magnet pole widths d1.That is, in the case that magnet pole widths d1 are 3.14mm, the width d2 of salient pole 61 is 0.8mm,
Data when 1mm, 1.3mm, 1.6mm, 1.9mm be respectively equivalent to salient pole 61 width d2/ magnet pole widths d1 be 0.25 (25%),
Data when 0.32 (32%), 0.41 (41%), 0.51 (51%), 0.61 (61%).
As shown in Fig. 5 (a), it is less than in the range of 1.6mm in the width d2 of salient pole 61, no matter with 100pps's and 200pps
Which speed, if the width d2 of salient pole 61 becomes big, starts voltage and reduces.Start voltage and reduce the torque meaning motor 1
Become big.On the other hand, salient pole 61 width d2 be more than 1.6mm scope in, start voltage value do not change.Namely
Say, in the motor 1 of present embodiment, even if the width d2 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 d2 of salient pole 61 is arranged on more than 1.6mm (the i.e. width d2/ magnetic of salient pole 61
Pole width d1 is substantially more than 50%).
As shown in Fig. 5 (b), the noise of motor 1 reduces when the width d2 of salient pole becomes big.And, cogging torque is in salient pole
Width d2 become big when reduce.That is, understanding in the motor 1 of present embodiment, noise and cogging torque are with salient pole
The value of width d2/ magnet pole widths d1 become big and reduce.Because cogging torque becomes due to torque pulsation, it can thus be assumed that turning
The rotation of son 5 is unstable to diminish with the minimizing of cogging torque, thus noise reduces.
Motor characteristics according to Fig. 5 (a) is to Fig. 5 (c) can be seen that, in the motor 1 of present embodiment, in Magnet
Number of poles be eight and stator core salient pole number be six in the case of, the width to salient pole 61 exceedes the magnet pole widths of Magnet
Till 50%, start voltage and reduce (i.e. torque rising) with the width expanding salient pole, and noise reduces.In the present invention,
Due to using this structure, therefore, it is possible to realize that torque is high and noise and the little motor of cogging torque.
Here, additionally it is possible to arrange the width d2 of salient pole in the case of will reducing noise and cogging torque further
More than 1.9mm (that is, the width d2 of salient pole 61 can be arranged on more than the 60% of magnet pole widths d1).In addition, if considering
The size of coil 9 and coil 9 is installed to operability during salient pole 61 (61b, 61f), then can not expand salient pole unlimitedly
Width d2, but can stator core 60 in the embodiment shape, the width d2 of salient pole is increased to 1.9mm.Therefore, lead to
Cross and adopt this shape, be capable of that torque is high and noise and the little motor of cogging torque.
(action effect)
As described above, the motor 1 of present embodiment is having rotor 5, in the structure of stator 6, if the magnetic by Magnet 50
Pole width is set to d1, and the width of salient pole 61 is set to d2, then the width d2 of salient pole be magnet pole widths d1 of Magnet 50 50% with
On, described rotor 5 has s pole and the Magnet 50 of the extremely circumferentially alternating setting of n, and described stator 6 has stator core 60 and coil
9, described stator core 60 circumferentially configures multiple salient poles 61, the terminal part of described salient pole 61 and the outer peripheral face of Magnet 50 every
Gap in opposite directions, two (the salient pole 61b, 61f) configuration in multiple salient poles 61 of described coil 9.Like this, by by salient pole 61
Width d2 rationalize, be capable of that torque is high and the little motor of noise.
(other embodiment)
In the above-described embodiment, for the example that motor apparatus 100 are applied to dial indicator display device 200, but
The device in addition to the motor apparatus 100 of dial indicator display device can be applied the present invention to.
Claims (10)
1. a kind of motor it is characterised in that
Described motor has:
Rotor, described rotor has the Magnet of s pole and the extremely circumferentially alternating setting of n；And
Stator, described stator has stator core and coil, is circumferentially configured with multiple salient poles, institute in described stator core
State that the terminal part of salient pole and the outer peripheral face of described Magnet are opposite across gap, 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.
2. motor 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.
3. motor according to claim 1 it is characterised in that
The number of poles of described Magnet is eight.
4. motor 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.
5. motor according to claim 3 it is characterised in that
The number of salient poles of described stator core is six.
6. motor 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. the motor according to any one of claim 1 to 6 it is characterised in that
The angle interval of the plurality of salient pole is unequal.
8. motor according to claim 7 it is characterised in that
When around configure one of two described salient poles salient pole of described coil between described s pole and described n pole opposite when,
The center or opposite with the center of described n pole of another salient pole and described s pole.
9. a kind of motor apparatus, it has the motor described in any one of claim 1 to 8, the feature of described motor apparatus
It is, it has:
Wheel group, described wheel group transmits the rotation of described rotor；And
Output shaft, the described wheel group that is rotated through of described rotor is transferred to described output shaft.
10. a kind of 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 |
|---|---|---|---|
| JP2015139287A JP2017022892A (en) | 2015-07-13 | 2015-07-13 | Motor, motor device, and pointer type display device |
| JP2015-139287 | 2015-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357017A true CN106357017A (en) | 2017-01-25 |
Family
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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 Before (1)
| 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 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017022892A (en) |
| CN (2) | CN205864090U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| 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 |
| CN101154839A (en) * | 2006-09-26 | 2008-04-02 | 株式会社捷太格特 | Brushless motor and electric power steering apparatus incorporating the same |
| DE102013007747A1 (en) * | 2013-05-07 | 2014-11-13 | Minebea Co., Ltd. | Stator for an electric machine |
| CN104242582A (en) * | 2013-06-12 | 2014-12-24 | 日本电产三协株式会社 | Motor |
| CN205864090U (en) * | 2015-07-13 | 2017-01-04 | 日本电产三协株式会社 | Motor, motor apparatus and dial indicator display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3422982B2 (en) * | 2000-10-31 | 2003-07-07 | エフ・ディ−・ケイ株式会社 | Stepping motor |
| JP2014241685A (en) * | 2013-06-12 | 2014-12-25 | 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 |
-
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
Patent Citations (6)
| 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 |
| CN101154839A (en) * | 2006-09-26 | 2008-04-02 | 株式会社捷太格特 | Brushless motor and electric power steering apparatus incorporating the same |
| DE102013007747A1 (en) * | 2013-05-07 | 2014-11-13 | Minebea Co., Ltd. | Stator for an electric machine |
| CN104242582A (en) * | 2013-06-12 | 2014-12-24 | 日本电产三协株式会社 | Motor |
| CN205864090U (en) * | 2015-07-13 | 2017-01-04 | 日本电产三协株式会社 | Motor, motor apparatus and dial indicator display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017022892A (en) | 2017-01-26 |
| CN205864090U (en) | 2017-01-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |