CN204408159U - Motor, motor apparatus and dial indicator display device - Google Patents
Motor, motor apparatus and dial indicator display device Download PDFInfo
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- CN204408159U CN204408159U CN201520118871.3U CN201520118871U CN204408159U CN 204408159 U CN204408159 U CN 204408159U CN 201520118871 U CN201520118871 U CN 201520118871U CN 204408159 U CN204408159 U CN 204408159U
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Abstract
The utility model relates to motor, motor apparatus and dial indicator display device.In motor, around two salient pole (61f, 61b) (main pole) that being positioned in multiple salient pole of stator core is less than first angular range (θ 1) of 180 °, be configured with coil respectively.And, the salient pole (61c to 61e) being positioned at second angular range (θ 2) of 180 ° in multiple salient pole becomes the first auxiliary pole not configuring coil around, described second angular range (θ 2) in the side contrary with two main pole (61f, 61b) sides, place, by by centered by the extended line of the first angular range (θ 1) binary imaginary bisecting line.Main pole (61f, 61b) is different with the structure of the air gap that magnet clips with the first auxiliary pole (61c to 61e) from the structure of the air gap that magnet clips.
Description
Technical field
The utility model two salient pole related in a kind of multiple salient pole of the stator core arranging along the side face of magnet are wound with the motor of coil, motor apparatus and dial indicator display device.
Background technology
The structure of installing pointer by motor is adopted in the display unit such as meter for car device.On the other hand, propose multiple salient pole of a kind of side face along magnet configuration stator core, the motor (with reference to patent documentation 1) of the structure of coils and two salient pole in multiple salient pole reel.
Patent documentation 1: Japanese Patent Laid-Open 2005-333786 publication
In the motor that patent documentation 1 is recorded, when the rotor rotates, power acts on rotor from the both direction of the orthogonal radial direction of the pivot axis with rotor respectively.Further, the power being applied to rotor from radial direction is reversed with the rotation of rotor.Therefore, rotor oscillation, such as, become the reason producing abnormal sound and bearing life minimizing etc.
Utility model content
In view of above problem, problem of the present utility model is to provide a kind of rotor that can suppress to the motor of radial vibration, the motor apparatus with this motor and dial indicator display device.
In order to solve the problem, the motor involved by the utility model comprises: rotor, and described rotor has the magnet that S pole and N pole are arranged alternately in the circumferential, stator core, multiple salient pole of described stator core circumferentially configure, and the terminal part of described multiple salient pole is opposed across gap with the outer peripheral face of described magnet, and coil, described coil is configured in being positioned in described multiple salient pole respectively and is less than around two main poles of first angular range of 180 °, the salient pole being positioned at second angular range of 180 ° in described multiple salient pole is the first auxiliary pole not configuring coil around, described second angular range is in the side contrary with side, described two main pole places, by by centered by the extended line of the binary imaginary bisecting line of described first angular range, the structure of the air gap clipped by the terminal part of described main pole and the structure of the air gap that the outer peripheral face of described magnet clips and the described terminal part of the first auxiliary pole and the outer peripheral face of described magnet is different, the attraction of the radial direction exerted a force towards the side in described side, main pole place and the side contrary with side, described main pole place by described rotor is produced between described rotor with described stator core.
In the utility model, the structure of the air gap clipped due to the outer peripheral face of the terminal part from magnet that are configured in the main pole of the first angular range and to be positioned at the structure of the air gap that the first auxiliary pole of the second angular range of the side contrary with side, two main pole places and the outer peripheral face of magnet clip different, therefore produces the attraction of the radial direction exerted a force towards the side in side, main pole place and the side contrary with side, main pole place by rotor between rotor with stator core.Therefore, because rotor is being subject to rotating towards the first angular range side at main pole place or under the state of the side pressure of the second angular range side at the first place, auxiliary pole, therefore rotor not easily vibrates.So the abnormal sound etc. because vibration produces can be suppressed.
In the utility model, following structure can be adopted: different from the width of the terminal part of described first auxiliary pole by the width of the terminal part of described main pole, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side in described side, main pole place and the side contrary with side, described main pole place by described rotor.
In the utility model, do not configure the second auxiliary pole of coil around preferably having between described two main poles, the width of described second auxiliary pole is equal with the width of described main pole.
In the utility model, the width preferably by the terminal part of described main pole is wider than the width of the terminal part of described first auxiliary pole, produces the attraction of the radial direction exerted a force towards side, described main pole place by described rotor between described rotor and described stator core.Due to when to described coil electricity, main pole attracts the auxiliary pole of force rate first of rotor to attract the power of rotor large, therefore according to this structure, if arranged by the width of the terminal part of main pole wider than the width of the terminal part of the first auxiliary pole, then between rotor and stator core, reliably can produce the attraction of the radial direction exerted a force towards side, main pole place by rotor.
In the utility model, width preferably by the terminal part of described main pole is narrower than the width of the terminal part of described first auxiliary pole, produces the attraction of the radial direction exerted a force towards the side contrary with side, described main pole place by described rotor between described rotor with described stator core.According to this structure, between rotor with stator core, reliably can produce the attraction of the radial direction exerted a force towards the side contrary with side, main pole place by rotor.
In the utility model, following structure can be adopted: different from the thickness of the terminal part of described first auxiliary pole by the thickness of the terminal part of described main pole, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side in described side, main pole place and the side contrary with side, described main pole place by described rotor.
In the utility model, following structure can be adopted: described stator core is the laminated iron core that multiple magnetic sheets are laminated, by by the described main pole of formation of at least one magnetic sheet in multiple magnetic sheets described and described first auxiliary extremely in the part of salient pole of thinner thickness of terminal part to arrange than other magnetic sheets short, the thickness of the terminal part of described main pole is different from the thickness of the terminal part of described first auxiliary pole.
In the utility model, do not configure the second auxiliary pole of coil around preferably having between described two main poles, the thickness of described second auxiliary pole is equal with the thickness of described main pole.
In the utility model, preferably by the terminal part of described main pole Thickness Ratio described in the thickness of terminal part of the first auxiliary pole thick, between described rotor and described stator core, produce the attraction of the radial direction exerted a force towards side, described main pole place by described rotor.Due to when to described coil electricity, main pole attracts the auxiliary pole of force rate first of rotor to attract the power of rotor large, therefore according to this structure, if arranged by the thickness of the terminal part of main pole thicker than the thickness of the terminal part of the first auxiliary pole, then between rotor and stator core, reliably can produce the attraction of the radial direction exerted a force towards side, main pole place by rotor.
In the utility model, preferably by the terminal part of described first auxiliary pole Thickness Ratio described in the thickness of terminal part of main pole thick, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side contrary with side, described main pole place by described rotor.According to this structure, between rotor with stator core, reliably can produce the attraction of the radial direction exerted a force towards the side contrary with side, main pole place by rotor.
In the utility model, in described magnet, be preferably formed with four to described S pole and described N pole, six described salient pole are formed in described stator core, when described two main poles are opposed with the boundary member of the circumferential center of the main pole of a side and described S pole and described N interpolar, the circumferential center of the main pole of the opposing party configures with the circumferential center of described S pole or the mode opposed with the circumferential center of described N pole.In this case, preferably described first angular range is 112.5 °.According to this structure, because the vibration of rotor reduces, therefore, it is possible to reduce the sound produced when rotor rotates, thus low noise can be realized.
In the utility model, in described magnet, be preferably formed with five to described S pole and described N pole, in described stator core, described salient pole is formed with three with equal angle intervals, and described first angular range is 120 °.According to this structure, because the vibration of rotor reduces, therefore, it is possible to reduce sound when rotor rotates, thus low noise can be realized.
In the utility model, in described magnet, be preferably formed with four to described S pole and described N pole, in described stator core, described salient pole is formed with ten with equal angle intervals, and described first angular range is 72 °.According to this structure, because the vibration of rotor reduces, therefore, it is possible to reduce sound when rotor rotates, thus low noise can be realized.
Motor apparatus has: the motor involved by the utility model; Wheels, described wheels transmit the rotation of described rotor; And output block, the described wheels that are rotated through of described rotor are delivered to described output block.
Dial indicator display device adopts the motor apparatus involved by the utility model, and drives pointer by described output block.
In the utility model, the structure of the air gap clipped due to the outer peripheral face of the terminal part from magnet that are configured in the main pole of the first angular range and to be positioned at the structure of the air gap that the first auxiliary pole of the second angular range of the side contrary with side, two main pole places and the outer peripheral face of magnet clip different, therefore produces the attraction of the radial direction exerted a force towards the side in side, main pole place and the side contrary with side, main pole place by rotor between rotor with stator core.Therefore, rotor is being subject to rotating towards the first angular range side at main pole place or under the state of the side pressure of the second angular range side at the first place, auxiliary pole, and therefore rotor not easily vibrates.So the abnormal sound etc. because vibration produces can be suppressed.
Accompanying drawing explanation
Fig. 1 (a), Fig. 1 (b) are the key diagrams of the motor apparatus involved by execution mode 1 of the present utility model.
Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are the key diagrams of the motor for the motor apparatus involved by execution mode 1 of the present utility model.
Fig. 3 is the vertical view of the motor for the motor apparatus involved by execution mode 1 of the present utility model.
Fig. 4 schematically shows the key diagram for the air gap between the salient pole of the motor of the motor apparatus involved by execution mode 1 of the present utility model and magnet.
Fig. 5 schematically shows the key diagram for the air gap between the salient pole of the motor of the motor apparatus involved by the variation of execution mode 1 of the present utility model and magnet.
Fig. 6 schematically shows the key diagram for the air gap between the salient pole of the motor of the motor apparatus involved by execution mode 2 of the present utility model and magnet.
Fig. 7 (a), Fig. 7 (b) are the key diagrams of the stator core of motor for the motor apparatus involved by execution mode 2 of the present utility model.
Fig. 8 schematically shows the key diagram for the air gap between the salient pole of the motor of the motor apparatus involved by the variation of execution mode 2 of the present utility model and magnet.
Fig. 9 (a), Fig. 9 (b) are the key diagrams of the stator core of motor for the motor apparatus involved by the variation of execution mode 2 of the present utility model.
Figure 10 schematically shows the key diagram for the air gap between the salient pole of the motor of the motor apparatus involved by execution mode 3 of the present utility model and magnet.
Figure 11 schematically shows the key diagram for the air gap between the salient pole of the motor of the motor apparatus involved by execution mode 4 of the present utility model and magnet.
(symbol description)
1 ... motor
5 ... rotor
6 ... stator
7 ... coil winding frame
9 ... coil
10 ... output shaft
50 ... magnet
60 ... stator core
61,61a to 61j ... salient pole
100 ... motor apparatus
200 ... dial indicator display device
601,602,603 ... magnetic sheet
θ 1 ... first angular range
θ 2 ... second angular range
L0 ... the pivot axis of rotor
Embodiment
Referring to accompanying drawing, application motor of the present utility model, motor apparatus and dial indicator display device are described.
Execution mode 1
(overall structure of motor apparatus)
Fig. 1 (a), Fig. 1 (b) are the key diagrams of the motor apparatus 100 involved by execution mode 1 of the present utility model, Fig. 1 (a) be from output shaft 10 the unilateral observation given prominence to the stereogram of motor apparatus 100, Fig. 1 (b) be from output shaft 10 the unilateral observation given prominence to the exploded view of motor apparatus 100.In addition, in the following description, the outstanding side of the output shaft 10 in the direction that the axis L of output shaft 10 is extended as side L1, using side contrary for the outstanding side with output shaft 10 as opposite side L2.Further, using the axis of the rotor 5 of motor 1 as pivot axis L0.Further, conveniently, using the side of pivot axis L0 also as side L1, the opposite side of pivot axis L0 is also described as opposite side L2.
Motor apparatus 100 shown in Fig. 1 (a), Fig. 1 (b) has output shaft 10 (output block) structure outstanding to the side L1 in axis L direction from housing 2.The motor apparatus 100 of present embodiment is used in reference to needle display 200, and pointer 11 is connected with output shaft 10.
Housing 2 comprise when observing from axis L direction be circular the first housing 21 and observe from axis L direction time be the second housing 22 of circular.First housing 21 is configured at the opposite side L2 in axis L direction, and the second housing 22 is configured at the side L1 in axis L direction.Be formed with protuberance 219 at multiple positions of the circumference of the side plate 211 of the first housing 21, be formed with the hook 229 engaged with protuberance 219 at multiple positions of the circumference of the side plate 221 of the second housing 22.Therefore, if be combined with the second housing 22 by the first housing 21 by making hook 229 engage with protuberance 219, just housing 2 can be formed.In the housing 2 formed like this, be formed with the cylinder portion 223 of supporting output shaft 10 in the base plate 222 of the second housing 22.
(structure of motor 1)
Motor apparatus 100 has motor 1 in the inside of housing 2.Motor 1 has the stator 6 of the surrounding of being supported rotor for rotating 5 by housing 2 and be configured in rotor 5.Rotor 5 has and is supported rotating shaft 51 for rotating by housing 2.
Rotor 5 has the pinion 58 of the end of the side L1 in the pivot axis L0 direction being fixed on rotating shaft 51 and is alternately formed with equal angle intervals at the outer peripheral face of magnet 50 with magnet 50, the S pole of cylindrical shape of pinion 58 one and N pole.In the present embodiment, magnet 50 and pinion 58 are molding by insert and are integrally formed, and magnet 50 and pinion 58 are combined by resinous plectane portion 59.Further, rotating shaft 51 is fixed in plectane portion 59.
Further, motor apparatus 100 has the wheels 4 rotation of rotor 5 deceleration being passed to output shaft 10, and these wheels 4 are the same with rotor 5 and stator 6 also to be supported by housing 2.Second gear 42 in large footpath that wheels 4 comprise the first gear 41 and engage with the small-diameter gear of the first gear 41, described first gear 41 has the large diameter gear 411 engaged with the pinion 58 of rotor 5 and the small-diameter gear (not shown) engaged with the second gear 42.Output shaft 10 and the second gear 42 are integrally formed, and output shaft 10 is supported as rotating by the cylinder portion 223 of the recess 215 of the first housing 21 and the second housing 22.In addition, the first gear 41 is supported as rotating by fulcrum 48, and the two ends of fulcrum 48 are kept by the axis hole 216 of the first housing 21 and the second housing 22.
(detailed construction of stator 6)
Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are the key diagrams of the motor 1 for the motor apparatus 100 involved by execution mode 1 of the present utility model, Fig. 2 (a) is the stereogram of motor 1, Fig. 2 (b) is the exploded view of motor 1, and Fig. 2 (c) represents the exploded view of the appearance of being decomposed in more detail by motor 1.Fig. 3 is the vertical view of the motor 1 for the motor 100 involved by execution mode 1 of the present utility model.
As shown in Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) and Fig. 3, in motor 1, stator 6 has stator core 60, described stator core 60 has with the outer peripheral face of magnet 50 across the opposed multiple salient pole 61 (salient pole 61a is to salient pole 61f) in gap, and multiple salient pole 61 is connected by connecting portion 65.Further, stator 6 comprise the salient pole 61f (main pole) be assemblied in multiple salient pole 61 coil winding frame 7 (coil winding frame 7a), across coil winding frame 7 be wound in the coil 9 (the first coil 9a) of the surrounding of salient pole 61f, the salient pole 61b (main pole) be assemblied in multiple salient pole 61 coil winding frame 7 (coil winding frame 7b) and be wound in the coil 9 (the second coil 9b) of the surrounding of salient pole 61b across coil winding frame 7.In the present embodiment, the number of salient pole 61 is six, is formed with four pairs of S poles and N pole in magnet 50.Further, main pole (salient pole 61f, 61b) is configured in the first gear 41 side shown in Fig. 1 (a), Fig. 1 (b) relative to pivot axis L0.
The part being configured with rotor 5 of stator 6 becomes peristome 64, and be extruded with multiple salient pole 61 from the inner peripheral of this peristome 64 towards the outer peripheral face of magnet 50, the terminal part 610a to 610f of the radially inner side of salient pole 61 is opposed across gap with the outer peripheral face of magnet 50.
At this, the salient pole 61b being equipped with coil winding frame 7, the 61f of stator core 60 are longer than other salient pole 61a, 61c to 61e.Therefore, stator core 60 be formed with salient pole 61b, the part of 61f gives prominence in the form of a substantially rectangular towards radial outside, salient pole 61b, 61f give prominence to from the outer peripheral portion of the rectangular portion 69b of stator core 60,69f towards radially inner side.
Stator core 60 in tabular, and is consisted of the magnetic sheet that multiple stamping-outs stacked are above-mentioned shape.The hole 68 embedded for fulcrum 48 is formed near the base portion of the salient pole 61a of stator core 60, protuberance 67 is formed at the radial outside of salient pole 61d, described protuberance 67 is given prominence to towards radial outside, and is clamped by the first housing 21 shown in Fig. 1 (a), Fig. 1 (b) and the second housing 22.
(structure of coil winding frame 7)
Coil-winding circle 7a and coil winding frame 7b are configured to centered by the line being connected salient pole 61a, 61d symmetrical in line, and have identical structure.Therefore, mark identical symbol to the same section of coil winding frame 7a and coil winding frame 7b to be described.
Coil winding frame 7a comprises drum stand body 70 and two terminal pins 8 (terminal pins 8a, 8b) of insulating properties, the drum stand body 70 of described insulating properties has the main body 71 of tubular, the main body 71 of described tubular is wound with the winding wire 90 forming coil 9 (the first coil 9a), and described two terminal pins 8 (terminal pins 8a, 8b) are held in drum stand body 70.Drum stand body 70 is formed from a resin, and terminal pins 8 is made of metal.Drum stand body 70 have in the end of the radially inner side of main part 71 overall dimension larger than main part 71 first along portion 72, drum stand body 70 have in the end of the radial outside of main part 71 overall dimension larger than main part 71 second along portion 73.First to clip main part 71 along portion 72 and second along portion 73 opposed, and first along portion 72 and second along between portion 73, winding wire 90 is wound in main part 71 around.
Terminal pins 8 (terminal pins 8a, 8b) is maintained along portion 73 second.The end of winding wire 90 to be wound into behind an end 81 of terminal pins 8 by soldering to end 81.Another end 82 of terminal pins 8 is outstanding and be connected with the distribution component (not shown) such as wiring substrate from the first housing 21 shown in Fig. 1 (a), Fig. 1 (b).Main part 71 is in square tube shape, and the salient pole 61f of stator core 60 is inserted into the inner side of this main part 71, and consequently, the first coil 9a is configured in around salient pole 61f.Salient pole 61f abuts with the protuberance (not shown) of the inner surface being formed at main part 71, inhibits coil winding frame 7 to offset relative to salient pole 61f position.
Coil winding frame 7b comprises drum stand body 70 and two terminal pins 8 (terminal pins 8a, 8b) of insulating properties, the drum stand body 70 of described insulating properties has the main part 71 of square tube shape, the main part 71 of described tubular is wound with the winding wire 90 forming coil 9 (the second coil 9b), and described two terminal pins 8 (terminal pins 8a, 8b) are held in drum stand body 70.Because the structure of drum stand body 70 is identical with the structure of coil winding frame 7a, therefore omit the description, but be inserted with the salient pole 61b of stator core 60 in the inner side of the main part 71 of drum stand body 70.Consequently, around salient pole 61b, be configured with the second coil 9b.
In rectangular portion 69b, extend obliquely relative to salient pole 61b along the extension 651 that salient pole 61b extends in the both sides of salient pole 61b, be interposed between radially inner side between salient pole 61b and extension 651 and expand.Therefore, it is possible to easily coil winding frame 7b is inserted into salient pole 61b from radially inner side.Further, in rectangular portion 69f, also extend obliquely relative to salient pole 61f along the extension 651 that salient pole 61f extends in the both sides of salient pole 61f, be interposed between radially inner side between salient pole 61f and extension 651 and expand.Therefore, it is possible to easily coil winding frame 7a is inserted into salient pole 61f from radially inner side.
(action)
In the motor 1 formed like this, motor apparatus 100 and dial indicator display device 200, when being powered to coil 9 (the first coil 9a and the second coil 9b) by terminal pins 8 (terminal pins 8a, 8b), rotor 5 rotates, and this is rotated through the wheels 4 shown in Fig. 1 (b) and is passed to output shaft 10.Therefore, the pointer 11 be connected with output shaft 10 rotates.Now, by inputting the number of drive pulses of regulation to coil 9, the angle position of pointer 11 can be switched, stop after making pointer 11 rotate to target location clockwise.Further, when supplying the driving pulse reversed, pointer can be made to rotate target location to other counterclockwise.
(angle position of salient pole 61)
In the present embodiment, the configuration of salient pole 61 unequal interval ground, but the salient pole 61f (main pole) being configured with the first coil 9a and the salient pole 61b (main pole) being configured with the second coil 9b configures as follows: when the circumferential center of the salient pole of a side is opposed with between S pole and N pole, namely, when the boundary member between S pole with N pole is opposed, the circumferential center of the salient pole of the opposing party is opposed with the circumferential center of the circumferential center of S pole or N pole.More particularly, in the present embodiment, number due to salient pole 61 is six, and in magnet 50, be formed with four pairs of S poles and N pole, therefore two salient pole 61f, 61b angle position in the circumferential being departed from 112.5 ° are used as main pole, and other salient pole 61a, 61c, 61d, 61e are the auxiliary pole not configuring coil 9.In addition, the angle position of salient pole 61f, 61b is departed from 112.5 ° of angle positions referring to the circumferential center of salient pole 61f and the circumferential center of salient pole 61b and is departed from 112.5 °.
Further, in the present embodiment, if with salient pole 61a for starting point, then each interval of adjacent in the circumferential salient pole 61 is followed successively by 56.25 °, 56.25 °, 67.5 ° 67.5 °, 56.25 °, 56.25 ° towards the clockwise direction in Fig. 3.
Like this, in the motor 1 of the motor apparatus 100 of present embodiment, it is four right that the S pole of magnet 50 and N pole are formed with equal angle intervals, is formed with six salient pole 61 in stator core 60.In the case of that construction, if salient pole 61 configures with equal angle intervals, then can not obtain rotor 5 and rotate required enough magnetic torques, but in stator core 60, when the salient pole 61f being wound with coil 9,61b in multiple salient pole 61 are opposed with between S pole and N pole with the circumferential center of the salient pole as a side, the mode that the circumferential center of the circumferential center of the salient pole of the opposing party and the circumferential center of S pole or N pole is opposed configures.Therefore, it is possible to obtain rotor 5 to rotate required enough magnetic torques.
Further, for the motor 1 of the motor apparatus 100 for present embodiment, by the change of checking detent torque relative to electric angle, if confirm each interval according to above-mentioned condition setting salient pole 61 adjacent in the circumferential, the change of detent torque is little.Therefore, in the motor apparatus 100 of present embodiment, the vibration of rotor 5 is few.Therefore, it is possible to reduce the volume produced when rotor 5 rotates, thus low noise can be realized.
(structure of the air gap between salient pole 61 and magnet 50)
Fig. 4 schematically shows the key diagram for the air gap between the salient pole 61 of the motor 1 of the motor apparatus 100 involved by execution mode 1 of the present utility model and magnet 50.
In the present embodiment, as shown in Figure 4, two salient pole 61f, 61b being positioned in multiple salient pole 61 being less than first angular range, theta 1 of 180 ° are configured with the main pole of coil 9 as surrounding.On the other hand, the salient pole 61c being positioned at second angular range, theta 2 of 180 ° in multiple salient pole 61,61d, 61e become the first auxiliary pole not configuring coil 9 around, described second angular range in the side contrary with two salient pole 61f, 61b (main pole) sides, place, by by centered by the extended line Lb of the binary imaginary bisecting line La of the first angular range, theta 1.Further, the salient pole 61a be positioned between two main poles (salient pole 61f, 61b) becomes the second auxiliary pole not configuring coil 9.
In the present embodiment, the structure of the air gap making terminal part 610f, 610b of main pole (salient pole 61f, 61b) and the structure of the air gap that the outer peripheral face of magnet 50 clips and terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e) and the outer peripheral face of magnet 50 clip is different.Therefore, between rotor 5 with stator core 60, produce the attraction of the radial direction exerted a force towards the side in main pole (salient pole 61f, 61b) side, place and the side contrary with main pole (61f, 61b) side, place by rotor 5.
More particularly, first, in six salient pole 61, the thickness of terminal part 610a to 610f is identical, and the interval between the outer peripheral face of terminal part 610a to 610f and magnet 50 is identical.Further, in two main poles (salient pole 61f, 61b), the width W 1 of terminal part 610f, 610b is identical, and in three the first auxiliary poles (salient pole 61c, 61d, 61e), the width W 2 of terminal part 610c, 610d, 610e is identical.But width W 1 is different from width W 2.In the present embodiment, width W 1 is wider than width W 2.
Therefore, magnetic attraction between magnet 50 from main pole (salient pole 61f, 61b) is different with the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e), and the magnetic attraction between magnet 50 and main pole (salient pole 61f, 61b) is larger than the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e).
And, in the present embodiment, the salient pole 61a (the second auxiliary pole) not configuring coil 9 is provided with between two main poles (salient pole 61f, 61b), but the width of the terminal part 610a of this second auxiliary pole (salient pole 61a) is W1, this width W 1 is equal with the width W 1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b).Therefore the magnetic attraction between magnet 50 and the second auxiliary pole (salient pole 61a) is larger than the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e).
Therefore, rotor 5 is being subject to rotating under the state of the side pressure of first angular range, theta 1 side at main pole (salient pole 61f, 61b) place (radial active force: represent with arrow F).Therefore, because the vibration of rotor 5 reduces, therefore, it is possible to reduce the volume produced when rotor 5 rotates, thus low noise can be realized.
And, when being energized to coil 9, main pole (salient pole 61f, 61b) attracts the auxiliary pole of force rate first (salient pole 61c, 61d, 61e) of rotor 5 to attract the power of rotor 5 large, in the present embodiment, according to this structure, the width W 1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b) is arranged larger than the width W 2 of terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e).Therefore, rotor 5 is reliably being subject to rotating under the state of the side pressure of first angular range, theta 1 side at main pole (salient pole 61f, 61b) place (radial active force: represent with arrow F).So, because the vibration of rotor 5 reduces, therefore, it is possible to reduce the volume produced when rotor 5 rotates, thus can low noise be realized.Further, because the vibration of rotor 5 reduces, therefore, it is possible to suppress the bearing portions part of supporting rotating shaft 51 (in the housing 2) life-span of the rotating shaft 51 of rotor 5 to reduce.
The variation of execution mode 1
Fig. 5 schematically illustrates the key diagram for the air gap between the salient pole 61 of the motor 1 of the motor apparatus 100 involved by the variation of execution mode 1 of the present utility model and magnet 50.In addition, because the basic structure of present embodiment is identical with execution mode 1, therefore, to the identical symbol of identical portion markings and the description thereof will be omitted.
As shown in Figure 5, present embodiment is identical with execution mode 1, and the structure of the air gap also making terminal part 610f, 610b of main pole (salient pole 61f, 61b) and the structure of the air gap that the outer peripheral face of magnet 50 clips and terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e) and the outer peripheral face of magnet 50 clip is different.Therefore, between rotor 5 with stator core 60, produce the attraction of the radial direction exerted a force towards the side in main pole (salient pole 61f, 61b) side, place and the side contrary with main pole (61f, 61b) side, place by rotor 5.More particularly, first, in six salient pole 61, the thickness of terminal part 610a to 610f is identical, and the interval between the outer peripheral face of terminal part 610a to 610f and magnet 50 is identical.Further, in two main poles (salient pole 61f, 61b), the width W 1 of terminal part 610f, 610b is identical, and in three the first auxiliary poles (salient pole 61c, 61d, 61e), the width W 2 of terminal part 610c, 610d, 610e is identical.But width W 1 is different from width W 2.
In the present embodiment, width W 1 is narrower than width W 2.Therefore, magnetic attraction between magnet 50 from main pole (salient pole 61f, 61b) is different with the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e), and the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e) is larger than the magnetic attraction between magnet 50 and main pole (salient pole 61f, 61b).
And, in the present embodiment, the salient pole 61a (the second auxiliary pole) not configuring coil 9 is provided with between two main poles (salient pole 61f, 61b), but the width of the terminal part 610a of this second auxiliary pole (salient pole 61a) is W1, this width W 1 is equal with the width W 1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b).Therefore, the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e) is larger than the magnetic attraction between magnet 50 and the second auxiliary pole (salient pole 61a).
Therefore, rotor 5 is being subject to rotating under the state of the side pressure of contrary side, the first angular range, theta 1 side with main pole (salient pole 61f, 61b) place (radial active force: represent with arrow F).Therefore, because the vibration of rotor 5 reduces, therefore, it is possible to reduce volume when rotor 5 rotates, thus effects such as realizing low noise can be reached.
Execution mode 2
Fig. 6 schematically shows the key diagram for the air gap between the salient pole 61 of the motor 1 of the motor apparatus 100 involved by execution mode 2 of the present utility model and magnet 50.Fig. 7 (a), Fig. 7 (b) are the key diagrams of the stator core 60 of motor 1 for the motor apparatus 100 involved by execution mode 2 of the present utility model, Fig. 7 (a) is the stereogram of stator core 60, and Fig. 7 (b) is the exploded view of stator core 60.In addition, because the basic structure of present embodiment is identical with execution mode 1, therefore to the identical symbol of identical portion markings and the description thereof will be omitted.
As shown in Figure 6, present embodiment is the same with execution mode 1, and the structure of the air gap also making terminal part 610f, 610b of main pole (salient pole 61f, 61b) and the structure of the air gap that the outer peripheral face of magnet 50 clips and terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e) and the outer peripheral face of magnet 50 clip is different.Therefore, between rotor 5 with stator core 60, produce the attraction of the radial direction exerted a force towards the side in main pole (salient pole 61f, 61b) side, place and the side contrary with main pole (salient pole 61f, 61b) side, place by rotor 5.More particularly, first, in six salient pole 61, the interval between the outer peripheral face of terminal part 610a to 610f and magnet 50 is identical.In the present embodiment, in six salient pole 61, the width of terminal part 610a to 610f is identical.
Further, in two main poles (salient pole 61f, 61b), the thickness t1 of terminal part 610f, 610b is identical, and in three the first auxiliary poles (salient pole 61c, 61d, 61e), the thickness t2 of terminal part 610c, 610d, 610e is identical.But thickness t1 is different from thickness t2.
In the present embodiment, thickness t1 is thicker than thickness t2.Therefore, magnetic attraction between magnet 50 from main pole (salient pole 61f, 61b) is different with the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e), and the magnetic attraction between magnet 50 and main pole (salient pole 61f, 61b) is larger than the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e).
And, in the present embodiment, the salient pole 61a (the second auxiliary pole) not configuring coil 9 is provided with between two main poles (salient pole 61f, 61b), but the thickness of the terminal part 610a of this second auxiliary pole (salient pole 61a) is t1, this thickness t1 is equal with the thickness t1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b).Therefore, the magnetic attraction between magnet 50 and the second auxiliary pole (salient pole 61a) is larger than the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e).
Therefore, rotor 5 is being subject to rotating under the state of the side pressure of first angular range, theta 1 side at main pole (salient pole 61f, 61b) place (radial active force: represent with arrow F).Therefore, because the vibration of rotor 5 reduces, therefore, it is possible to reduce the volume produced when rotor 5 rotates, thus effects such as realizing low noise can be reached.
And, when being energized to coil 9, main pole (salient pole 61f, 61b) attracts the auxiliary pole of force rate first (salient pole 61c, 61d, 61e) of rotor 5 to attract the power of rotor 5 large, in the present embodiment, according to this structure, the thickness t1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b) is arranged thicker than the thickness t2 of terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e).Therefore, rotor 5 is reliably being subject to rotating under the state of the side pressure of first angular range, theta 1 side at main pole (salient pole 61f, 61b) place (radial active force: represent with arrow F).So, because the vibration of rotor 5 reduces, therefore, it is possible to reduce the volume produced when rotor 5 rotates, thus effects such as realizing low noise can be reached.
In order to realize this structure, in the present embodiment, as shown in Fig. 7 (a), Fig. 7 (b), because stator core 60 is the laminated iron core be laminated by three magnetic sheets 601,602,603, therefore, in magnetic sheet 601,602,603, what arrange than other magnetic sheets by the part of the salient pole 61 of the thinner thickness of the formation terminal part of at least one magnetic sheet is short.
More particularly, in the present embodiment, the length forming the part of main pole (salient pole 61f) in magnetic sheet 601,602,603 is equal, and the length forming the part of main pole (salient pole 61b) is equal.Further, the length forming the part of the second auxiliary pole (salient pole 61a) in magnetic sheet 601,602,603 is equal.Therefore, the thickness t1 of the thickness t1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b) and the terminal part 610a of the second auxiliary pole (salient pole 61a) is the thickness sum of three magnetic sheets 601,602,603.
On the other hand, the length forming the part of the first auxiliary pole (salient pole 61c) in magnetic sheet 602,603 is equal, but the length forming the part of the first auxiliary pole (salient pole 61c) in magnetic sheet 601 is shorter than the length of the part forming the first auxiliary pole (salient pole 61c) in magnetic sheet 602,603.And, the length forming the part of the first auxiliary pole (salient pole 61d) in magnetic sheet 602,603 is equal, but the length forming the first auxiliary pole (salient pole 61d) in magnetic sheet 601 is shorter than the length of the part forming the first auxiliary pole (salient pole 61d) in magnetic sheet 602,603.And, the length forming the part of the first auxiliary pole (salient pole 61e) in magnetic sheet 602,603 is equal, but the length forming the part of the first auxiliary pole (salient pole 61e) in magnetic sheet 601 is shorter than the length of the part forming the first auxiliary pole (salient pole 61e) in magnetic sheet 602,603.Therefore, the thickness t2 of terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e) is the thickness sum of two magnetic sheets 602,603.In addition, said structure is also suitable for the situation that the number of magnetic sheet is more than two or four.And, in the present embodiment, make the length forming the part of salient pole 61 in the magnetic sheet 601 of the one end being arranged at thickness direction different from the length forming the part of salient pole 61 in other magnetic sheets 602,603, but the length of the part of the formation salient pole 61 be arranged in the magnetic sheet 602 in the middle of thickness direction also can be made different from the length forming the part of salient pole 61 in other magnetic sheets 601,603.
The variation of execution mode 2
Fig. 8 schematically shows the key diagram for the air gap between the salient pole 61 of the motor 1 of the motor apparatus 100 involved by the variation of execution mode 2 of the present utility model and magnet 50.Fig. 9 (a), Fig. 9 (b) are the key diagrams of the stator core 60 of motor 1 for the motor apparatus 100 involved by the variation of execution mode 2 of the present utility model, Fig. 9 (a) is the stereogram of stator core 60, and Fig. 9 (b) is the exploded view of stator core 60.In addition, because the basic structure of present embodiment is identical with execution mode 1, therefore to the identical symbol of identical portion markings and the description thereof will be omitted.
As shown in Figure 8, present embodiment is identical with execution mode 1, and the structure of the air gap also making terminal part 610f, 610b of main pole (salient pole 61f, 61b) and the structure of the air gap that the outer peripheral face of magnet 50 clips and terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e) and the outer peripheral face of magnet 50 clip is different.Therefore, between rotor 5 with stator core 60, produce the attraction of the radial direction exerted a force towards the side in main pole (salient pole 61f, 61b) side, place and the side contrary with main pole (61f, 61b) side, place by rotor 5.More particularly, first, in six salient pole 61, the interval between the outer peripheral face of terminal part 610a to 610f and magnet 50 is equal.In the present embodiment, in six salient pole 61, the width of terminal part 610a to 610f is identical.
Further, in two main poles (salient pole 61f, 61b), the thickness t1 of terminal part 610f, 610b is identical, and in three the first auxiliary poles (salient pole 61c, 61d, 61e), the thickness t2 of terminal part 610c, 610d, 610e is identical.But thickness t1 is different from thickness t2.
In the present embodiment, thickness t2 is thicker than thickness t1.Therefore, magnetic attraction between magnet 50 from main pole (salient pole 61f, 61b) is different with the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e), and the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e) is larger than the magnetic attraction between magnet 50 and main pole (salient pole 61f, 61b).
And, in the present embodiment, the salient pole 61a (the second auxiliary pole) not configuring coil 9 is provided with at two main poles (salient pole 61f, 61b), but the thickness of the terminal part 610a of this second auxiliary pole (salient pole 61a) is t1, this thickness t1 is equal with the thickness t1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b).Therefore, the magnetic attraction between magnet 50 and the first auxiliary pole (salient pole 61c, 61d, 61e) is larger than the magnetic attraction between magnet 50 and the second auxiliary pole (salient pole 61a).
Therefore, rotor 5 is being subject to rotating under the state of the side pressure of contrary side, the first angular range, theta 1 side with main pole (salient pole 61f, 61b) place (radial active force: represent with arrow F).Therefore, because the vibration of rotor 5 reduces, therefore, it is possible to reduce volume when rotor 5 rotates, thus effects such as realizing low noise can be reached.
In order to realize this structure, in the present embodiment, as shown in Fig. 9 (a), Fig. 9 (b), because stator core 60 is the laminated iron core be laminated by three magnetic sheets 601,602,603, therefore, in magnetic sheet 601,602,603, the part of the salient pole 61 of the thinner thickness of the formation terminal part of at least one magnetic sheet is arranged shorter than other magnetic sheets.
More particularly, in the present embodiment, the length forming the part of the first auxiliary pole (salient pole 61c) in magnetic sheet 601,602,603 is equal, the length forming the part of the first auxiliary pole (salient pole 61d) in magnetic sheet 601,602,603 is equal, and the length forming the part of the first auxiliary pole (salient pole 61d) in magnetic sheet 601,602,603 is equal.Therefore, the thickness t2 of terminal part 610c, 610d, the 610e of the first auxiliary pole (salient pole 61c, 61d, 61e) is the thickness sum of three magnetic sheets 601,602,603.
On the other hand, the length forming the part of main pole (salient pole 61f) in magnetic sheet 602,603 is equal, but the length forming the part of main pole (salient pole 61f) in magnetic sheet 601 is shorter than the length of the part forming main pole (salient pole 61f) in magnetic sheet 602,603.And, the length forming the part of main pole (salient pole 61b) in magnetic sheet 602,603 is equal, but the length forming the part of main pole (salient pole 61b) in magnetic sheet 601 is shorter than the length of the part forming main pole (salient pole 61b) in magnetic sheet 602,603.And, the length forming the part of the second auxiliary pole (salient pole 61a) in magnetic sheet 602,603 is equal, but the length forming the part of the second auxiliary pole (salient pole 61a) in magnetic sheet 601 is shorter than the length of the part forming the second auxiliary pole (salient pole 61a) in magnetic sheet 602,603.Therefore, the thickness t1 of the thickness t1 of terminal part 610f, 610b of main pole (salient pole 61f, 61b) and the terminal part 610a of the second auxiliary pole (salient pole 61a) is the thickness sum of two magnetic sheets 602,603.In addition, said structure is also suitable for the situation that the number of magnetic sheet is more than two or four.And, in the present embodiment, make the length forming the part of salient pole 61 in the magnetic sheet 601 of the one end being arranged at thickness direction different from the length forming the part of salient pole 61 in other magnetic sheets 602,603, but the length of the part of the formation salient pole 61 be arranged in the magnetic sheet 602 in the middle of thickness direction also can be made different from the length forming the part of salient pole 61 in other magnetic sheets 601,603.
Execution mode 3
Figure 10 schematically shows the key diagram for the air gap between the salient pole 61 of the motor 1 of the motor apparatus 100 involved by execution mode 3 of the present utility model and magnet 50.In addition, because the basic structure of present embodiment is identical with execution mode, therefore to the identical symbol of identical portion markings and the description thereof will be omitted.
As shown in Figure 10, in the present embodiment, S pole and N pole are alternately formed with equal angle intervals at the outer peripheral face of magnet 50.In the present embodiment, in magnet 50, five pairs of S poles and N pole is formed with.Therefore, in magnet 50, ten N poles and S pole are formed with equal angle intervals altogether, and therefore adjacent in the circumferential S pole and the angle position of N pole depart from 36 °.
In stator core 60, three salient pole 61 are formed with equal angle intervals in the circumferential, and the angle position between salient pole 61 adjacent in the circumferential departs from 120 °.
In the stator core 60 formed like this, two salient pole 61a, 61b being positioned in three salient pole 61 being less than first angular range, theta 1 of 180 ° are used as the main pole that surrounding is configured with coil 9.In the present embodiment, two salient pole 61a, 61b are formed in first angular range, theta 1 of 120 °.On the other hand, the salient pole 61c being positioned at second angular range, theta 2 of 180 ° in multiple salient pole 61 becomes the first auxiliary pole not configuring coil 9 around, described second angular range, theta 2 in the side contrary with two salient pole 61a, 61b (main pole) sides, place, by by centered by the extended line Lb of the binary imaginary bisecting line La of the first angular range, theta 1.In addition, in the present embodiment, because salient pole 61 is three, therefore between two main poles (salient pole 61a, 61b), there is not auxiliary pole (the second auxiliary pole).Therefore, the part clamped by two main poles (salient pole 61a, 61b) of connecting portion 65 is cut off, and forms cut-off parts 89.
The motor 1 formed like this is also identical with execution mode 1,2 and their variation, if the structure of the air gap making terminal part 610a, 610b of main pole (salient pole 61a, 61b) and the structure of the air gap that the outer peripheral face of magnet 50 clips and the terminal part 610c of the first auxiliary pole (salient pole 61c) and the outer peripheral face of magnet 50 clip is different, then can produce the attraction of the radial direction exerted a force towards the side in main pole (salient pole 61a, 61b) side, place and the side contrary with main pole (salient pole 61a, 61b) side, place by rotor 5 between rotor 5 with stator core 60.Therefore, it is possible to reduce the vibration of rotor 5.
Execution mode 4
Figure 11 schematically shows the key diagram for the air gap between the salient pole 61 of the motor 1 of the motor apparatus 100 involved by execution mode 4 of the present utility model and magnet 50.In addition, because the basic structure of present embodiment is identical with execution mode 1, therefore to the identical symbol of identical portion markings and the description thereof will be omitted.
As shown in figure 11, in the present embodiment, S pole and N pole are alternately formed with equal angle intervals at the outer peripheral face of magnet 50.In the present embodiment, in magnet 50, four pairs of S poles and N pole is formed with.Therefore, in magnet 50, eight N poles and S pole are formed with equal angle intervals altogether, and therefore adjacent in the circumferential S pole and the angle position of N pole depart from 45 °.
In stator core 60, ten salient pole 61 are formed with equal angle intervals in the circumferential, and the angle position between salient pole 61 adjacent in the circumferential departs from 36 °.
In the present embodiment, being positioned in ten salient pole 61 is less than two salient pole 61e, 61g of first angular range, theta 1 of 180 ° as the main pole being configured with coil 9.In the present embodiment, two salient pole 61e, 61g are formed in first angular range, theta 1 of 72 °.In addition, in the present embodiment, because two main poles (salient pole 61e, 61g) angulation is narrower, if therefore coil winding frame 7 is installed to cardinal process pole (salient pole 61e, 61g), then there is no the space of the first gear 41 shown in allocation plan 1 (a), Fig. 1 (b).Therefore, in the present embodiment, main pole (salient pole 61e, 61g) is positioned at the position with the first gear 41 opposite side shown in Fig. 1 (a), Fig. 1 (b) relative to pivot axis L0.
On the other hand, the salient pole 61a being positioned at second angular range, theta 2 of 180 ° in multiple salient pole 61,61b, 61c, 61i, 61j become the first auxiliary pole not configuring coil 9 around, described second angular range, theta 2 in the side contrary with two salient pole 61e, 61g (main pole) sides, place, by by centered by the extended line Lb of the binary imaginary bisecting line La of the first angular range, theta 1.Further, the salient pole 61f (the second auxiliary pole) of coil 9 is not configured around being formed between two salient pole 61e, 61g (main pole) in stator core 60.Further, the first angular range, theta 1 in stator core 60 and do not configure salient pole 61d, the 61h (the 3rd auxiliary pole) of coil 9 around being formed with between the second angular range, theta 1.
The motor 1 formed like this also with execution mode 1, 2 and their variation identical, if make main pole (salient pole 61e, terminal part 610e 61g), the structure of the air gap that the outer peripheral face of 610g and magnet 50 clips and the first auxiliary pole (salient pole 61a, 61b, 61c, 61i, terminal part 610a 61j), 61b, 610c, 610i, 610j) different from the structure of the air gap that the outer peripheral face of magnet 50 clips, then can produce rotor 5 towards main pole (salient pole 61e between rotor 5 and stator core 60, 61g) side, place and with main pole (salient pole 61e, the attraction of the radial direction of the side force in the side that 61g) side, place is contrary.Therefore, it is possible to reduce the vibration of rotor 5.Now, preferably the structure of air gap that clips of the terminal part 610f of the second auxiliary pole (salient pole 61f) and the structure of the air gap that the outer peripheral face of magnet 50 clips and terminal part 610e, 610g of main pole (salient pole 61e, 61g) and the outer peripheral face of magnet 50 is identical.
Other execution modes
In the above-described embodiment, the structure of the air gap clipped in order to the structure of terminal part 610a, 610b from the air gap that the outer peripheral face of magnet 50 clips of making main pole (salient pole 61a, 61b) and the terminal part 610c of the first auxiliary pole (salient pole 61c) and the outer peripheral face of magnet 50 is different, change width or the thickness of the terminal part of salient pole 61, but also can change width and the thickness both sides of the terminal part of salient pole 61.And, in addition to the foregoing structure, the interval between the terminal part 610c of interval between terminal part 610a, 610b of main pole (salient pole 61a, 61b) and the outer peripheral face of magnet 50 and the first auxiliary pole (salient pole 61c) and the outer peripheral face of magnet 50 can also be changed.
And, in the above-described embodiment, in two main poles, the terminal part of main pole is identical with the structure (width and the thickness of the terminal part of main pole) of the air gap that the outer peripheral face of magnet 50 clips, but also can adopt in two main poles, the structure that the terminal part of main pole is different from the structure (width of the terminal part of main pole and thickness) of the air gap that the outer peripheral face of magnet 50 clips.
In above-mentioned execution mode 1,2 etc., multiple first auxiliary extremely in, the terminal part of the first auxiliary pole is identical with the structure (width of the terminal part of the first auxiliary pole and thickness) of the air gap that the outer peripheral face of magnet 50 clips, but also can adopt multiple first auxiliary extremely in, the structure that the terminal part of the first auxiliary pole is different from the structure (width of the terminal part of the first auxiliary pole and thickness) of the air gap that the outer peripheral face of magnet 50 clips.
In the above-described embodiment, illustrate example motor apparatus 100 being applied to dial indicator display device 200, but also the utility model can be applied to the equipment except the motor apparatus 100 of pointer display device.
Claims (16)
1. a motor, is characterized in that, described motor comprises:
Rotor, described rotor has the magnet that S pole and N pole are arranged alternately in the circumferential;
Stator core, multiple salient pole of described stator core circumferentially configure, and the terminal part of described multiple salient pole is opposed across gap with the outer peripheral face of described magnet; And
Coil, described coil is configured in being positioned in described multiple salient pole respectively and is less than around two main poles of first angular range of 180 °,
The salient pole being positioned at second angular range of 180 ° in described multiple salient pole is the first auxiliary pole not configuring coil around, described second angular range is in the side contrary with side, described two main pole places, by by centered by the extended line of the binary imaginary bisecting line of described first angular range
The structure of the air gap clipped by the terminal part of described main pole and the structure of the air gap that the outer peripheral face of described magnet clips and the described terminal part of the first auxiliary pole and the outer peripheral face of described magnet is different, produces the attraction of the radial direction exerted a force towards the side in described side, main pole place and the side contrary with side, described main pole place by described rotor between described rotor with described stator core.
2. motor according to claim 1, is characterized in that,
Different from the width of the terminal part of described first auxiliary pole by the width of the terminal part of described main pole, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side in described side, main pole place and the side contrary with side, described main pole place by described rotor.
3. motor according to claim 2, is characterized in that,
The second auxiliary pole of coil is not configured around having between described two main poles,
The width of described second auxiliary pole is equal with the width of described main pole.
4. motor according to claim 2, is characterized in that,
Wider than the width of the terminal part of described first auxiliary pole by the width of the terminal part of described main pole, between described rotor and described stator core, produce the attraction of the radial direction exerted a force towards side, described main pole place by described rotor.
5. motor according to claim 2, is characterized in that,
Narrower than the width of the terminal part of described first auxiliary pole by the width of the terminal part of described main pole, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side contrary with side, described main pole place by described rotor.
6. motor according to claim 1, is characterized in that,
Different from the thickness of the terminal part of described first auxiliary pole by the thickness of the terminal part of described main pole, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side in described side, main pole place and the side contrary with side, described main pole place by described rotor.
7. motor according to claim 6, is characterized in that,
Described stator core is the laminated iron core that multiple magnetic sheets are laminated,
By by the described main pole of formation of at least one magnetic sheet in multiple magnetic sheets described and described first auxiliary extremely in the part of salient pole of thinner thickness of terminal part to arrange than other magnetic sheets short, the thickness of the terminal part of described main pole is different from the thickness of the terminal part of described first auxiliary pole.
8. motor according to claim 6, is characterized in that,
The second auxiliary pole of coil is not configured around having between described two main poles,
The thickness of the terminal part of described second auxiliary pole is equal with the thickness of described main pole.
9. motor according to claim 6, is characterized in that,
Thick by the thickness of the terminal part of the first auxiliary pole described in the Thickness Ratio of the terminal part of described main pole, between described rotor and described stator core, produce the attraction of the radial direction exerted a force towards side, described main pole place by described rotor.
10. motor according to claim 6, is characterized in that,
Thick by the thickness of the terminal part of main pole described in the Thickness Ratio of the terminal part of described first auxiliary pole, between described rotor with described stator core, produce the attraction of the radial direction exerted a force towards the side contrary with side, described main pole place by described rotor.
11. motors according to claim 1, is characterized in that,
Four are formed to described S pole and described N pole in described magnet,
Six described salient pole are formed in described stator core,
When described two main poles are opposed with the boundary member of the circumferential center of the main pole of a side and described S pole and described N interpolar, the circumferential center of the main pole of the opposing party configures with the circumferential center of described S pole or the mode opposed with the circumferential center of described N pole.
12. motors according to claim 11, is characterized in that,
Described first angular range is 112.5 °.
13. motors according to claim 1, is characterized in that,
Five are formed to described S pole and described N pole in described magnet,
In described stator core, described salient pole is formed with three with equal angle intervals,
Described first angular range is 120 °.
14. motors according to claim 1, is characterized in that,
Four are formed to described S pole and described N pole in described magnet,
In described stator core, described salient pole is formed with ten with equal angle intervals,
Described first angular range is 72 °.
15. 1 kinds of motor apparatus, is characterized in that, described motor apparatus comprises:
Motor according to any one of claim 1 to 14;
Wheels, described wheels transmit the rotation of described rotor; And
Output block, the described wheels that are rotated through of described rotor are delivered to described output block.
16. 1 kinds of dial indicator display devices, is characterized in that,
Described dial indicator display device uses the motor apparatus described in claim 15,
And drive pointer by described output block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-043218 | 2014-03-05 | ||
| JP2014043218A JP2015171195A (en) | 2014-03-05 | 2014-03-05 | Motor, motor device and pointer type display device |
Publications (1)
| Publication Number | Publication Date |
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| CN204408159U true CN204408159U (en) | 2015-06-17 |
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| CN201510090369.0A Expired - Fee Related CN104901507B (en) | 2014-03-05 | 2015-02-28 | Motor, motor apparatus and dial indicator display device |
| CN201520118871.3U Expired - Fee Related CN204408159U (en) | 2014-03-05 | 2015-02-28 | Motor, motor apparatus and dial indicator display device |
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| CN201510090369.0A Expired - Fee Related CN104901507B (en) | 2014-03-05 | 2015-02-28 | Motor, motor apparatus and dial indicator display device |
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| CN (2) | CN104901507B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN104901507A (en) * | 2014-03-05 | 2015-09-09 | 日本电产三协株式会社 | Motor, Motor device and pointer type display device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3610667B2 (en) * | 1996-04-09 | 2005-01-19 | 松下電器産業株式会社 | motor |
| JP3815280B2 (en) * | 2001-09-26 | 2006-08-30 | 株式会社デンソー | Instrument |
| JP4498275B2 (en) * | 2003-06-30 | 2010-07-07 | セイコープレシジョン株式会社 | Step motor |
| US8084913B2 (en) * | 2005-10-06 | 2011-12-27 | Borgwarner Inc. | DC motor with asymmetrical poles |
| JP2008043071A (en) * | 2006-08-07 | 2008-02-21 | Denso Corp | Stepping motor and manufacturing method therefor |
| JP5002381B2 (en) * | 2007-09-12 | 2012-08-15 | 矢崎総業株式会社 | Driving device for pointer instrument |
| CN102111057A (en) * | 2009-12-24 | 2011-06-29 | 慈溪市九菱电器有限公司 | Stepping motor stator lamination of automobile instrument |
| KR101676154B1 (en) * | 2012-05-17 | 2016-11-14 | 가부시키가이샤 덴소 | Vehicle-use indication meter |
| JP2015171195A (en) * | 2014-03-05 | 2015-09-28 | 日本電産サンキョー株式会社 | Motor, motor device and pointer type display device |
-
2014
- 2014-03-05 JP JP2014043218A patent/JP2015171195A/en active Pending
-
2015
- 2015-02-28 CN CN201510090369.0A patent/CN104901507B/en not_active Expired - Fee Related
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901507A (en) * | 2014-03-05 | 2015-09-09 | 日本电产三协株式会社 | Motor, Motor device and pointer type display device |
| CN104901507B (en) * | 2014-03-05 | 2018-05-15 | 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 |
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| CN104901507A (en) | 2015-09-09 |
| JP2015171195A (en) | 2015-09-28 |
| CN104901507B (en) | 2018-05-15 |
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