CN105680659A - Motor and manufacturing method of same - Google Patents
Motor and manufacturing method of same Download PDFInfo
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- CN105680659A CN105680659A CN201510845086.2A CN201510845086A CN105680659A CN 105680659 A CN105680659 A CN 105680659A CN 201510845086 A CN201510845086 A CN 201510845086A CN 105680659 A CN105680659 A CN 105680659A
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- bearing
- keeps
- circuit card
- head bearing
- iron core
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Abstract
The invention provides a motor and a manufacturing method of the same. A substrate holding rack comprises a flange part for holding a circuit board, a substrate holding part for limiting the circumferential movement of the circuit board, and a plurality of substrate holding rack leg parts of multiple groove parts for substrate; wherein the leg parts protrude downward from the substrate holding part, are fixed on the peripheral surface of a stator iron core, and extends downwards from the upper ends.
Description
Technical field
The present invention relates to the manufacture method of a kind of motor and motor.
Background technology
In the past, in motor, it is provided with the sensor of the position of detection rotor magnet. In the brushless motor of DC shown in Fig. 1 of Japanese Unexamined Patent Publication 2008-54390 publication, the sensor base plate 30 being provided with Magnetic Sensor 31 is installed on the end face of the insulation part 22 of covering stator 20. Too, the circuit card portion 110 with sensing circuit is held in insulation part 108 to the motor shown in Fig. 5 of Japanese Unexamined Patent Publication No. 5335494 publication. Too, sensor base plate 70 is installed on electric insulation part 62 to the brushless motor of DC shown in Fig. 2 of Japanese Unexamined Patent Publication No. 5319028 publication.
But, it is fixed at sensor base plate in the motor of insulation part, due to the impact of the insulate shape error of part and the installation error etc. to stator core, limits sensor and improve relative to the precision of the relative position of stator core. Therefore, also limit the precision of the position of rotor magnet detection to improve.
Summary of the invention
In view of above-mentioned problem, it is an object of the invention to improve the precision of sensor relative to the relative position of stator core.
The exemplary motor of the present invention comprises: the stator core of ring-type, and it is by centered by center axis vertically; Multiple coil, described multiple coil is assemblied in multiple teeth of described stator core across insulation part; Bearing portion, it has head bearing and lower bearing; Axle, it is supported as can rotate centered by the axis of described center by described bearing portion; Rotor iron core, it is fixed on described axle; Rotor magnet, it is fixed on described rotor iron core, and described rotor magnet is configured at the radially inner side of described stator core; Circuit card, the lower surface at described circuit card is provided with the sensor of the position detecting described rotor magnet; And substrate holder, it keeps described circuit card above described rotor magnet, and described substrate holder comprises: substrate maintaining part, and it keeps the outer edge of described circuit card, and the circumference limiting described circuit card is mobile; And multiple substrate holder foot, described multiple substrate holder foot gives prominence to downward from described substrate maintaining part, and described multiple substrate holder foot is individually fixed in multiple substrate groove portions that the periphery at described stator core extends downward from upper end.
According to the present invention, it is possible to improve the precision of sensor relative to the relative position of stator core.
With reference to accompanying drawing and by the following detailed explanation to the preferred embodiment of the present invention, above-mentioned and other features, key element, step, feature and the advantage of the present invention can become clearly.
Accompanying drawing explanation
Fig. 1 is the vertical view of the motor involved by an enforcement mode.
Fig. 2 is the side-view of motor.
Fig. 3 is the stereographic map of motor.
Fig. 4 is the longitudinal section of motor.
Fig. 5 is the stereographic map of stator.
Fig. 6 is the vertical view of stator core.
Fig. 7 is the stereographic map of stator core.
Fig. 8 is the stereographic map of multiple tooth.
Fig. 9 is the stereographic map of core-back.
Figure 10 is the vertical view of segmentation insulation division and coil.
Figure 11 is the stereographic map of segmentation insulation division and coil.
Figure 12 is the stereographic map of segmentation insulation division.
Figure 13 is the vertical view of circuit card and substrate holder.
Figure 14 is the upward view of circuit card and substrate holder.
Figure 15 is the stereographic map of circuit card and substrate holder.
Figure 16 is the stereographic map of circuit card and substrate holder.
Figure 17 is the vertical view of circuit card, substrate holder and stator.
Figure 18 is the stereographic map of circuit card, substrate holder and stator.
Figure 19 is the vertical view of substrate holder and stator.
Figure 20 is the vertical view that head bearing keeps frame.
Figure 21 is the side-view that head bearing keeps frame.
Figure 22 is the stereographic map that head bearing keeps frame.
Figure 23 is the vertical view that lower bearing keeps frame.
Figure 24 is the side-view that lower bearing keeps frame.
Figure 25 is the stereographic map that lower bearing keeps frame.
Figure 26 is the side-view of the state eliminating housing representing motor.
Figure 27 is the stereographic map of the state eliminating housing representing motor.
Figure 28 is the vertical view of stator core.
Figure 29 is the longitudinal section of motor.
Figure 30 is the longitudinal section of motor.
Figure 31 is the figure of an example of the manufacturing process representing motor.
Figure 32 is the stereographic map of segmentation insulation division and interior iron core.
Figure 33 is the figure of other examples of the manufacturing process representing motor.
Embodiment
In this manual, by the upside of the Fig. 4 in the axis J1 direction, center of motor 1 referred to as " upside ", by downside referred to as " downside ". In addition, upper and lower is to not representing position relation when being assembled into physical device and direction. Further, the direction parallel with center axis J1 is called " upper and lower to ", by the radial direction centered by the axis J1 of center referred to as " radial direction ", by the circumference centered by the axis J1 of center referred to as " circumference ".
Fig. 1 is the vertical view of the exemplary motor 1 involved by an enforcement mode representing the application. Fig. 2 is the side-view of motor 1. Fig. 3 is the stereographic map of motor 1. Fig. 4 is the longitudinal section of motor 1. In the diagram, the cross section of details part is eliminated parallel diagonal lines.
Motor 1 is the brushless motor of DC of inner-rotor type. Motor 1 is such as used as the driving source of the power tools such as impact type screwdriver.
Motor 1 comprises: be the stationary part 2 of fixing assembly; For the rotating part 3 of rotary assembled body; And bearing portion 4. Stationary part 2 is the parts of roughly cylinder shape longer in the vertical direction. Rotating part 3 is the parts of roughly cylinder shape longer in the vertical direction. Rotating part 3 is positioned at the radially inner side of stationary part 2.
Stationary part 2 comprises: stator 21, circuit card 22, substrate holder 23, head bearing keep frame 24 and lower bearing to keep frame 25. Stationary part 2 is housed inside by the radially inner side of the housing 26 towards the roughly cylinder shape centered by center axis J1 vertically. Rotating part 3 comprises: axle 31; Rotor iron core 32; And rotor magnet 33. Bearing portion 4 comprises: head bearing 41; And lower bearing 42. When motor 1 drives, between stator 21 and rotor magnet 33, produce torque. Thus, rotating part 3 rotates centered by the axis J1 of center.
Axle 31 is supported as rotating centered by the axis J1 of center by bearing portion 4. The parts of the roughly cylinder shape centered by the axis J1 of Zhou31Shi Yi center. Axle 31 keeps frame 25 to give prominence to downward than lower bearing. In addition, the projected direction of axle 31 is not necessarily defined as lower section. Axle 31 such as also comparable head bearing keep frame 24 give prominence to upward. The parts of the roughly cylinder shape centered by the axis J1 of rotor iron core 32 Shi Yi center. Rotor iron core 32 is fixed on the periphery of axle 31. Rotor magnet 33 is fixed on the periphery of rotor iron core 32. Rotor magnet 33 such as also can imbed the inside of rotor iron core 32, and is configured near the periphery of rotor iron core 32. Axle 31 from rotor iron core 32 and stator 21 upward and lower section give prominence to. The top of axle 31 is supported by the head bearing 41 in bearing portion 4. The bottom of axle 31 is supported by lower bearing 42.
The upside of rotor iron core 32 and downside are provided with pad 34. The parts of the roughly annulus tabular centered by each pad 34 Shi Yi center axis J1. Two pads 34 are fixed on the periphery of axle 31. Two pads 34 respectively upper surface and lower surface with rotor iron core 32 contact. The upside of the pad 34 of upside is provided with back yoke 35. The parts of the roughly annulus tabular centered by the axis J1 of back yoke 35 Shi Yi center. The upper surface of the pad 34 of back yoke 35 and upside. The upside of back yoke 35 is provided with sensor-magnet 36. The parts of the roughly annulus tabular centered by the axis J1 of sensor-magnet 36 Shi Yi center. Back yoke 35 and sensor-magnet 36 are fixed on the periphery of axle 31 indirectly across pad 34. In detail, the central part at pad 34 is provided with the protuberance of the roughly cylinder shape given prominence to upward along axle 31, and the inner peripheral surface of back yoke 35 and the inner peripheral surface of sensor-magnet 36 are fixed on this protuberance. In addition, the inner peripheral surface of back yoke 35 also can be directly fixed on the periphery of axle 31. The inner peripheral surface of sensor-magnet 36 also can be directly fixed on the periphery of axle 31. Axle 31 is given prominence to upward from the pad 34 of upside and back yoke 35. Further, axle 31 is given prominence to downward from the pad 34 of downside.
Fig. 5 is the stereographic map of stator 21. The parts of the roughly cylinder shape centered by the axis J1 of stator 21 Shi Yi center. As shown in FIG. 4 and 5, stator 21 comprises: stator core 211; Insulation part 212; And multiple coil 213. As shown in Figure 4, radially inner side at stator core 211 is configured with rotor iron core 32 and rotor magnet 33.
Fig. 6 is the vertical view of stator core 211. Fig. 7 is the stereographic map of stator core 211. The parts of the ring-type centered by the axis J1 of stator core 211 Shi Yi center. Stator core 211 is formed by the magnetic steel plate of the multiple thin plate of stacking along the vertical direction. Periphery at stator core 211 is provided with multiple substrate groove portion 281 and multiple bearing groove portion 282. Multiple substrate groove portion 281 and multiple bearing groove portion 282 extend downward from upper end at the periphery of stator core 211 respectively. In the example shown in Fig. 6 and Fig. 7, multiple substrate groove portion 281 and multiple bearing groove portion 282 be end the periphery of stator core 211 arrives from upper end respectively. That is, multiple substrate groove portion 281 and multiple bearing groove portion 282 extend upward from lower end at the periphery of stator core 211 respectively.
Multiple substrate groove portion 281 and multiple bearing groove portion 282 are such as all formed as identical shape and size.In this case, the stator core slot portion of the part in the multiple stator core slot portions being formed at the periphery of stator core 211 is used as multiple substrate groove portion 281, remaining stator core slot portion is used as multiple bearing groove portion 282.
Multiple substrate groove portion 281 and multiple bearing groove portion 282 be alternately configuration in the circumferential. Multiple substrate groove portion 281 and multiple bearing groove portion 282 roughly angularly configure to interval in the circumferential. In the example shown in Fig. 6 and Fig. 7, the quantity in substrate groove portion 281 is three, and the quantity in bearing groove portion 282 is also three. Therefore, these groove portions configure with the interval of about 60 degree in the circumferential. When top view, the circumferential width of the radial inner end in substrate groove portion 281 and bearing groove portion 282 is less than the circumferential width of its radially outer end.
Stator core 211 comprises: core-back 214; And multiple tooth 215. The parts of the roughly cylinder shape centered by the axis J1 of core-back 214 Shi Yi center. Multiple tooth 215 is outstanding from the inner peripheral surface of core-back 214 towards radially inner side respectively. Multiple tooth 215 and rotor magnet 33 are diametrically to putting. Multiple tooth 215 is angularly ground, interval configuration in the circumferential. In the example shown in Fig. 6 and Fig. 7, the quantity of tooth 215 is six. Multiple tooth 215 and core-back 214 are the parts of split.
Periphery in core-back 214 is provided with above-mentioned multiple substrate groove portion 281 and multiple bearing groove portion 282. The central part of the circumference in each substrate groove portion 281 is arranged side by side diametrically with the central part of the circumference of the tooth 215 of the radially inner side being positioned at each substrate groove portion 281. The central part of the circumference in each bearing groove portion 282 is arranged side by side diametrically with the central part of the circumference of the tooth 215 of the radially inner side being positioned at each bearing groove portion 282.
Fig. 8 is the stereographic map of multiple tooth 215. Multiple tooth 215 comprises tooth terminal part 216 and tooth base portion 217 respectively. Tooth terminal part 216 is from the end of the radially inner side in tooth base portion 217 towards the expansion of circumference both sides. In other words, tooth base portion 217 is outstanding from the circumferential central part of tooth terminal part 216 towards radial outside. Each tooth terminal part 216 connects with tooth terminal part 216 part adjacent in the circumferential. In the example shown in Fig. 8, tooth terminal part 216 by be arranged at upper and lower to both ends and three connection section 216a of central part connect with adjacent tooth terminal part 216. The quantity of connection section 216a and upper and lower to position also can suitably change. Two adjacent tooth terminal parts 216 are separated from one another except connection section 216a. Multiple tooth 215 is the parts of the ring-type of the one being connected in the circumferential with tooth terminal part 216 by this connection section 216a. Hereinafter, the parts of this one and multiple tooth 215 are referred to as " interior iron core 210 ".
Fig. 9 is the stereographic map of core-back 214. Core-back 214 is the outer iron core of the ring-type of the radial outside being positioned at iron core 210. Inserted the radially inner side of core-back 214 by interior iron core 210, as shown in Fig. 6 and Fig. 7, its radially outer end in tooth base portion 217 of multiple tooth 215 is connected with the inner peripheral surface of core-back 214. Interior iron core 210 is such as pressed into the radially inner side of core-back 214.
Insulation part 212 shown in Fig. 5 is such as resin-made. Insulation part 212 comprises multiple segmentation insulation division 218 independent of each other. Multiple segmentation insulation division 218 covers multiple tooth 215 respectively. It is respectively fitted with multiple coil 213 at multiple segmentation insulation division 218. The quantity of segmentation insulation division 218 and the quantity of coil 213 are equal with the quantity of tooth 215 (with reference to Fig. 6 to Fig. 8).In the example as shown in fig. 5, the quantity of segmentation insulation division 218 and the quantity of coil 213 are six respectively.
Figure 10 represents that a component cuts insulation division 218 and the vertical view of coil 213. Figure 11 is the stereographic map of segmentation the insulation division 218 and coil 213 observed from radially inner side. Figure 12 is the stereographic map of the segmentation insulation division 218 observed from radial outside. Shape and the size of multiple segmentation insulation division 218 are identical.
It is respectively arranged with radially through insulation part opening 219 at multiple segmentation insulation division 218. Around insulation part opening 219, the groove portion 218a being configured with coil 213 is set. Insulation part opening 219 at segmentation insulation division 218 is inserted with tooth base portion 217 (with reference to Fig. 6 to Fig. 8). Thus, multiple segmentation insulation division 218 is installed on multiple tooth 215 respectively. Before segmentation insulation division 218 is installed on tooth 215, Wire-wound is formed in segmentation insulation division 218 by coil 213 by wire reel etc. Therefore, being installed on multiple tooth 215 by multiple segmentation insulation division 218, multiple coil 213 is assemblied in multiple teeth 215 of stator core 211 across insulation part 212.
Figure 13 is the vertical view representing circuit card 22 and substrate holder 23. Figure 14 is the upward view representing circuit card 22 and substrate holder 23. Figure 15 be from top view to circuit card 22 and the stereographic map of substrate holder 23. Figure 16 is the stereographic map of the circuit card 22 and substrate holder 23 observed from below.
Circuit card 22 is the tabular parts of general triangular when top view. Central part at circuit card 22 is provided with the base openings 222 of the circular centered by the axis J1 of center. Further, the breach 223 independent with base openings 222 it is provided with in the outer edge of circuit card 22. In example shown in Figure 13 to Figure 16, it is provided with three breach 223 in the outer edge of circuit card 22. As described later, wire from multiple coil 213 (with reference to Fig. 4) inserts these breach 223 from below. In circuit card 22, it is possible to arrange communicating pores 224 and replace breach 223, described communicating pores 224 inserts from below for the wire from multiple coil 213, and the position that communicating pores 224 is arranged at base openings 222 is separated.
Lower surface at circuit card 22 is provided with sensor 221. In the example shown in Figure 14 and Figure 16, three sensors 221 are installed on the lower surface of circuit card 22. Sensor 221 is such as a kind of hall sensing device in Magnetic Sensor. Sensor 221 also can utilize the sensor of other various kind. Such as, it is possible to the encoder being arranged at the lower surface of circuit card 22 is used as sensor 221. The distribution carrying out sensor 221 such as extends towards upper surface from the lower surface of circuit card 22 by being arranged at multiple communicating poress 224 of circuit card 22. Communicating pores 224 independently is arranged at circuit card 22 with breach 223 or the above-mentioned communicating pores 224 of base openings 222 and the wire of coil 213. Communicating pores 224 such as connect in outside with the soldering of wire connects time use.
As shown in Figure 4, each sensor 221 is positioned at rotor magnet 33 and the top of sensor-magnet 36. Utilize the circumferential position (following, to be called " position of rotation ") of sensor 221 detecting sensor magnet 36. Owing to sensor-magnet 36 is fixed relative to the relative position of rotor magnet 33, therefore by utilizing the position of rotation of sensor 221 detecting sensor magnet 36, also have detected the circumferential position of rotor magnet 33 and position of rotation.In other words, sensor 221 indirectly detects the position of rotation of rotor magnet 33 by sensor-magnet 36. Thus, the rotation of rotating part 3 is detected. In the example shown in Figure 4, sensor 221 entirety is positioned at the position by the top, upper end than insulation part 212. In addition, it is possible to omit sensor-magnet 36, by utilizing the position of rotation of sensor 221 direct-detection rotor magnet 33, detect the rotation of rotating part 3.
As shown in Figure 13 to Figure 16, circuit card 22 is installed on the upper end of substrate holder 23 and is fixed. Substrate holder 23 comprises: substrate maintaining part 231; And multiple substrate holder foot 232. Substrate holder 23 is the parts of resin-made. Substrate maintaining part 231 is the position in the roughly ring-type of triangle frame-shaped when top view. The outer edge of substrate maintaining part 231 retaining circuit plate 22.
Substrate maintaining part 231 comprises: lower surface props up bearing portion 234; Lateral bolster bearing portion 235; And movement limiting portion 233. It is the position in the roughly ring-type of triangle frame-shaped when top view that lower surface props up bearing portion 234. In example shown in Figure 13 to Figure 16, substrate maintaining part 231 comprises three lateral bolster bearing portion 235. The lower surface that three lateral bolster bearing portion 235 are arranged at roughly triangle frame-shaped props up three corners of bearing portion 234. The outer edge that each lateral bolster bearing portion 235 props up bearing portion 234 along lower surface extends, and props up bearing portion 234 from lower surface and give prominence to upward. Lower surface props up bearing portion 234 and contacts with the complete cycle of the outer edge of the lower surface of circuit card 22, and supporting circuit board 22 from below. The contacts side surfaces of each lateral bolster bearing portion 235 and circuit card 22, and from side supporting circuit board 22.
In example shown in Figure 13 to Figure 16, substrate maintaining part 231 comprises three movement limiting portions, 233 3 movement limiting portions 233 giving prominence to facing to radially inner side from the radially inner side of three lateral bolster bearing portion 235 respectively. Three recesses 225 towards radially inner side depression it are provided with in the outer edge of circuit card 22. Three recesses 225 are chimeric with three movement limiting portions 233 respectively. Thus, chimeric with a part for circuit card 22 by the movement limiting portion 233 of substrate maintaining part 231, the circumference limiting the circuit card 22 being held in substrate holder 23 is mobile. In addition, the quantity of movement limiting portion 233 both can be one, it is also possible to is two. Further, movement limiting portion 233 is not necessarily arranged at the face of the radially inner side of lateral bolster bearing portion 235, and the position of movement limiting portion 233 also can carry out various change.
Multiple substrate holder foot 232 gives prominence to downward from substrate maintaining part 231. In example shown in Figure 13 to Figure 16, substrate holder 23 comprises three substrate holder foots 232. Three substrate holder foot 232 roughly angularly ground, interval configurations in the circumferential. Three substrate holder foots 232 are arranged at above-mentioned three corners that lower surface props up bearing portion 234. In other words, substrate holder foot 232 is positioned at the lower section of lateral bolster bearing portion 235. Substrate holder foot 232 comprises pin base portion 236 and pin terminal part 237. Pin base portion 236 props up bearing portion 234 from lower surface and gives prominence to downward, and pin terminal part 237 is given prominence to downward from pin base portion 236. Circumferential width and the lateral bolster bearing portion 235 in pin base portion 236 are roughly the same. The circumferential width of pin terminal part 237 is less than the circumferential width in pin base portion 236. Pin terminal part 237 is positioned at the central part of the circumference in pin base portion 236. The circumferential width of pin terminal part 237 is roughly equal with the circumferential width in the substrate groove portion 281 (with reference to Fig. 7) of stator core 211.Further, the radial thickness of pin terminal part 237 is roughly equal with the radial depth in substrate groove portion 281.
Figure 17 is the vertical view representing the state that circuit card 22 and substrate holder 23 are installed on stator 21. Figure 18 is the stereographic map representing the state that circuit card 22 and substrate holder 23 are installed on stator 21. Multiple substrate holder foots 232 of substrate holder 23 insert multiple substrate groove portion 281 respectively and are fixed from top. In detail, the pin terminal part 237 of substrate holder foot 232 inserts substrate groove portion 281, is directly fixed on stator core 211. Thus, as shown in Figure 4, circuit card 22 is kept by substrate holder 23 above rotor magnet 33. Stator core 211 is such as fixed on by being pressed into or insert bonding in multiple substrate holder foot 232.
Figure 19 is the illustrated figure of the circuit card 22 eliminating in Figure 17. In other words, Figure 19 is the vertical view representing the state that substrate holder 23 is installed on stator 21. In substrate holder 23, the position 238 between lateral bolster bearing portion 235 and another adjacent lateral bolster bearing portion 235 that lower surface props up in bearing portion 234 is positioned at above coil 213. Further, this position 238 contacts with the lower surface of circuit card 22 (with reference to Figure 18). In other words, lower surface props up the position 238 of bearing portion 234 between coil 213 and circuit card 22, and coil 213 and circuit card 22 is isolated at least partly. In the following description, position 238 is called " isolation part 238 ".
In the example shown in Figure 19, substrate holder 23 comprises three isolation parts 238 between multiple coil 213 and circuit card 22. Three isolation parts 238 lay respectively between adjacent substrate holder foot 232 (with reference to Figure 14). Owing to isolation part 238 is configured at the top of coil 213, therefore bearing groove portion 282 is positioned at the position leaning on radial outside than substrate holder 23, and when top view, bearing groove portion 282 exposes from substrate holder 23. A part for each isolation part 238 and multiple coil 213 is in the vertical direction to putting, and a part for each isolation part 238 and circuit card 22 is in the vertical direction to putting.
Figure 20 is the vertical view that head bearing keeps frame 24. Figure 21 is the side-view that head bearing keeps frame 24. Figure 22 is the stereographic map that head bearing keeps frame 24. Head bearing maintenance frame 24 comprises head bearing maintaining part 241 and multiple head bearing keeps frame foot 242. Head bearing keeps frame 24 to be such as metal. Head bearing keeps frame 24 can also be such as resin-made.
Head bearing maintaining part 241 keeps head bearing 41 (with reference to Fig. 4). Head bearing maintaining part 241 comprises head bearing accommodation section 244 and upper cover part 245. The position of the roughly cylinder shape centered by the axis J1 of Shi Yi center, head bearing accommodation section 244. The head bearing 41 of the roughly cylinder shape centered by the inner containment You Yi center axis J1 of head bearing accommodation section 244. Upper cover part 245 is expanded from the outer side of head bearing accommodation section 244 towards radial outside. The position of the roughly cylinder shape centered by the axis J1 of upper cover part 245 Shi Yi center.
Multiple head bearing keeps frame foot 242 to give prominence to downward from head bearing maintaining part 241. In detail, multiple head bearing keeps frame foot 242 to give prominence to downward from the outer edge of upper cover part 245. In example shown in Figure 20 to Figure 22, head bearing keeps frame 24 to comprise three head bearings and keeps frame foot 242. Three head bearings keep frame foot 242 roughly angularly ground, interval configuration in the circumferential.Head bearing keeps frame foot 242 to comprise pin base portion 246 and pin terminal part 247. Pin base portion 246 gives prominence to downward from upper cover part 245, and pin terminal part 247 is given prominence to downward from pin base portion 246.
The circumferential width in the width ratio pin base portion 246 of pin terminal part 247 is little. Pin terminal part 247 is positioned at the central part of the circumference in pin base portion 246. The circumferential width of pin terminal part 247 is roughly equal with the circumferential width in the bearing groove portion 282 (with reference to Fig. 7) of stator core 211. Further, the radial thickness of pin terminal part 247 is roughly equal with the radial depth in bearing groove portion 282. As mentioned above, owing to the shape in bearing groove portion 282 is roughly the same with the shape in substrate groove portion 281, therefore head bearing keeps the circumferential width of the pin terminal part 247 of frame foot 242 and radial thickness roughly equal respectively with circumferential width and the radial thickness of the pin terminal part 237 (with reference to Figure 14 to Figure 16) of substrate holder foot 232.
Figure 23 is the vertical view that lower bearing keeps frame 25. Figure 24 is the side-view that lower bearing keeps frame 25. Figure 25 is the stereographic map that lower bearing keeps frame 25. Lower bearing maintenance frame 25 comprises lower bearing maintaining part 251 and multiple lower bearing keeps frame foot 252. Lower bearing keeps frame 25 to be such as metal. Lower bearing keeps frame 25 can also be such as resin-made.
Lower bearing maintaining part 251 keeps lower bearing 42 (with reference to Fig. 4). Lower bearing maintaining part 251 comprises lower bearing accommodation section 254, lower cover portion 255 and pin base portion 256. The position of the roughly cylinder shape centered by lower bearing receiving part 254 Shi Yi center axis J1. The lower bearing 42 of the roughly cylinder shape centered by the inner containment You Yi center axis J1 of lower bearing receiving part 254. Lower cover portion 255 is expanded from the outer side of lower bearing receiving part 254 towards radial outside. The position of the roughly cylinder shape centered by the axis J1 of lower cover portion 255 Shi Yi center. Pin base portion 256 gives prominence to upward from the outer edge of lower cover portion 255. The position of the roughly cylinder shape centered by pin base Bu256Shi Yi center axis J1.
Multiple lower bearing keeps frame foot 252 to give prominence to upward from lower bearing maintaining part 251. In detail, multiple lower bearing keeps frame foot 252 to give prominence to upward from the bottom in pin base portion 256. In example shown in Figure 23 to Figure 25, lower bearing keeps frame 25 to comprise six lower bearings and keeps frame foot 252. Six lower bearings keep frame foot 252 roughly angularly ground, interval configuration in the circumferential. Lower bearing keeps frame foot 252 to comprise pin terminal part 257.
The circumferential width of pin terminal part 257 is roughly equal with the substrate groove portion 281 of stator core 211 and the circumferential width in bearing groove portion 282 (with reference to Fig. 7). Further, the radial thickness of pin terminal part 257 is roughly equal with the radial depth in substrate groove portion 281 and bearing groove portion 282. Lower bearing keeps the circumferential width of pin terminal part 257 of frame foot 252 and radial thickness to keep the circumferential width of pin terminal part 247 (with reference to Figure 20 to Figure 22) of frame foot 242 and radial thickness roughly equal respectively with the pin terminal part 237 of substrate holder foot 232 and head bearing.
Figure 26 is the side-view representing the state that head bearing keeps frame 24 and lower bearing maintenance frame 25 are installed on stator 21, substrate holder 23 and rotating part 3. Figure 27 is the stereographic map representing the state that head bearing keeps frame 24 and lower bearing maintenance frame 25 are installed on stator 21, substrate holder 23 and rotating part 3. That is, in Figure 26 and Figure 27, the state eliminating housing 26 of motor 1 is represented.
Head bearing keeps multiple head bearing of frame 24 to keep frame foot 242 to insert multiple bearing groove portion 282 respectively from top and fixed. In detail, the head bearing being configured at the top of substrate holder 23 keeps the pin terminal part 247 of frame foot 242 to insert bearing groove portion 282, is directly fixed on stator core 211. Thus, circuit card 22 is all kept the head bearing receiving part 244 of frame 24 and upper cover part 245 to cover by head bearing except the position near communicating pores 224. , as shown in Figure 4, further head bearing 41 is kept frame 24 to keep by head bearing above rotor iron core 32. Multiple head bearing keeps frame foot 242 to be such as fixed on stator core 211 by being pressed into or insert bonding.
Head bearing 41 is configured at the top of the base openings 222 of circuit card 22. Head bearing 41 is supporting the axle 31 given prominence to upward from base openings 222 than circuit card 22 position by the top. The diameter of the base openings 222 of the diameter ratio circuit card 22 of head bearing 41 is little. In other words, when top view, base openings 222 is bigger than the profile of head bearing 41.
As shown in Figure 26 and Figure 27, lower bearing keeps the multiple lower bearing of frame 25 to keep frame foot 252 to insert multiple bearing groove portion 282 and multiple substrate groove portion 281 respectively from below and fixed. In detail, lower bearing keeps the pin terminal part 257 of frame foot 252 to insert bearing groove portion 282 or substrate groove portion 281, is directly fixed on stator core 211. Thus, as shown in Figure 4, lower bearing 42 is kept frame 25 to keep in the lower section of rotor iron core 32 by lower bearing. In the example shown in Figure 26 and Figure 27, lower bearing maintenance frame 25 comprises three the lower bearings being fixed on three bearing groove portions 282 and keeps frame foot 252 to keep frame foot 252 with three the lower bearings being fixed on three substrate groove portions 281. Multiple lower bearing keeps frame foot 252 to be such as fixed on stator core 211 by being pressed into or insert bonding.
As described above, in motor 1, the sensor 221 of the position of detection rotor magnet 33 is arranged at the lower surface of circuit card 22, and circuit card 22 is kept by substrate holder 23 above rotor magnet 33. Substrate holder 23 comprises: the outer edge of retaining circuit plate 22, and limits the substrate maintaining part 231 of the circumference movement of circuit card 22; And give prominence to downward from substrate maintaining part 231, and it is individually fixed in multiple substrate holder foots 232 in multiple substrate groove portions 281 that the periphery at stator core 211 extends downward from upper end.
Thus, compared with being indirectly fixed on the situation of stator core 211 with substrate holder 23 across insulation part 212 other structures such as grade, it is directly fixed on stator core 211 by substrate holder 23, it is possible to accurately located relative to stator core 211 by circuit card 22. Consequently, it is possible to improve the precision of sensor 221 relative to the relative position of stator core 211. Owing to rotor magnet 33 and sensor-magnet 36 are located relative to stator core 211, therefore, it is possible to improve sensor 221 relative to the precision of rotor magnet 33 and the relative position of sensor-magnet 36. Further, the circumference of circuit card 22 is limited by substrate maintaining part 231 mobile, additionally it is possible to improve the precision of sensor 221 relative to rotor magnet 33 and sensor-magnet 36 relative position in the circumferential. Its result is, it is possible to accurately detect the position of rotation of rotor magnet 33 and sensor-magnet 36 such that it is able to carry out the drived control of motor 1 accurately.As mentioned above, it is necessary, the situation of omission sensor-magnet 36 is too.
As mentioned above, it is necessary, substrate maintaining part 231 comprises movement limiting portion 233, described movement limiting portion 233 is moved by the circumference limiting circuit card 22 chimeric with a part for circuit card 22. Consequently, it is possible to easily limit the circumferential mobile of circuit card 22 by simple structure.
As mentioned above, it is necessary, head bearing keeps frame 24 to comprise: the head bearing maintaining part 241 keeping the head bearing 41 on the top of supporting axle 31; And give prominence to downward from head bearing maintaining part 241, and the multiple head bearing being individually fixed in multiple bearing groove portions 282 that the periphery at stator core 211 extends downward from upper end keeps frame foot 242. Thus, by by head bearing 41 support rotating part 3 head bearing keep frame 24 be directly fixed on stator core 211, it is possible to rotor magnet 33 and sensor-magnet 36 are accurately located relative to stator core 211. Consequently, it is possible to improve sensor 221 further relative to the precision of rotor magnet 33 and the relative position of sensor-magnet 36. Its result is, it is possible to more accurately detect the position of rotation of rotor magnet 33 and sensor-magnet 36 such that it is able to carry out the drived control of motor 1 more accurately. As mentioned above, it is necessary, the situation of omission sensor-magnet 36 is too.
Further, lower bearing keeps frame 25 to comprise: the lower bearing maintaining part 251 of the lower bearing 42 of the bottom of supporting retainer shaft 31; And give prominence to upward from lower bearing maintaining part 251, and the multiple lower bearing being individually fixed in multiple bearing groove portions 282 that the periphery at stator core 211 extends downward from upper end keeps frame foot 252. Thus, by by lower bearing 42 support rotating part 3 lower bearing keep frame 25 be directly fixed on stator core 211, it is possible to rotor magnet 33 and sensor-magnet 36 are accurately located relative to stator core 211. Consequently, it is possible to improve sensor 221 further relative to the precision of rotor magnet 33 and the relative position of sensor-magnet 36. Its result is, it is possible to more accurately detect the position of rotation of rotor magnet 33 and sensor-magnet 36 such that it is able to the driving carrying out motor 1 more accurately rotates. Further, keeping frame 24 identical with head bearing, lower bearing keeps frame 25 to be also directly fixed on stator core 211 such that it is able to improve the precision of lower bearing 42 relative to the relative position of head bearing 41. As mentioned above, it is necessary, the situation of omission sensor-magnet 36 is too.
As mentioned above, it is necessary, substrate holder 23 is resin-made, and substrate holder 23 comprises the isolation part 238 between multiple coil 213 and circuit card 22. A part for isolation part 238 and multiple coil 213 in the vertical direction to putting, with a part for circuit card 22 in the vertical direction to putting. Consequently, it is possible to improve the insulating property between circuit card 22 and coil 213.
Further, being provided with breach 223 or communicating pores 224 at circuit card 22, breach 223 or communicating pores 224 insert for the wire from multiple coil 213, and arrange with base openings 222 is independent. Consequently, it is possible to easily make the wire from multiple coil 213 draw to the top of circuit card 22 non-contiguously and upper surface with circuit card 22 is connected. Its result is, it is possible to easily manufacture motor 1.
As mentioned above, it is necessary, stator core 211 comprises: the interior iron core 210 of the ring-type that the tooth terminal part 216 of multiple tooth 215 connects in the circumferential;And be positioned at the radial outside of iron core 210, and the core-back 214 of ring-type that its radially outer end in the tooth base portion 217 of multiple tooth 215 is connected with inner circumferential surface. Further, the part 212 that insulate comprises multiple segmentation insulation division 218 independent of each other. It is respectively arranged with insulation part opening 219 that is radially through and that insert for tooth base portion 217 at multiple segmentation insulation division 218. Consequently, it is possible to easily assemble stator 21.
Further, as mentioned above, it is necessary, substrate holder 23 is not be fixed on stator core 211 across insulation part 212, but directly it is fixed on stator core 211, therefore the structure for keeping substrate holder 23 need not be set at insulation part 212. Accordingly, it may be possible to the shape making multiple segmentation insulation divisions 218 of insulation part 212 is identical. Consequently, it is possible to simplify manufacture and the management of insulation part 212. And, additionally it is possible to make the lower in shape symmetrical of segmentation insulation division 218. Its result is, when forming coil 213, it is not necessary to consider the upper and lower of segmentation insulation division 218, segmentation insulation division 218 is positioned over wire reel such that it is able to simplify the formation process of stator 21.
In stator core 211, the central part of the circumference in each substrate groove portion 281 is arranged side by side diametrically with the central part of the circumference of the tooth 215 of the radially inner side being positioned at each substrate groove portion 281. Thus, substrate groove portion 281 is set by the position lower in magneticflux-density, it is possible to suppress substrate with groove portion 281 to the impact of the magnetic circuit of motor 1. Further, the central part of the circumference in each bearing groove portion 282 is also arranged side by side diametrically with the central part of the circumference of the tooth 215 of the radially inner side being positioned at each bearing groove portion 282. Thus, bearing groove portion 282 is set by the position lower in magneticflux-density, it is possible to suppress bearing with groove portion 282 to the impact of the magnetic circuit of motor 1.
Figure 28 is the vertical view of other the preferred stator core 211a representing motor 1. Identical with said stator iron core 211, the periphery in the core-back 214 of stator core 211a is also provided with multiple substrate groove portion 281 and multiple bearing groove portion 282. The central part of the circumference in each substrate groove portion 281 is arranged side by side diametrically with the central part of the circumference of the tooth 215 of the radially inner side being positioned at each substrate groove portion 281. The circumferential width in each substrate groove portion 281 is less than the minimum width of the circumference of the tooth 215 of the radially inner side being positioned at each substrate groove portion 281. The central part of the circumference in each bearing groove portion 282 is arranged side by side diametrically with the central part of the circumference of the tooth 215 of the radially inner side being positioned at each bearing groove portion 282. The circumferential width in each bearing groove portion 282 is less than the minimum width of the circumference of the tooth 215 of the radially inner side being positioned at each bearing groove portion 282.
In stator core 211a, owing to the circumferential width in each substrate groove portion 281 is less than the minimum width of the minimum width of the circumference of tooth 215 and the circumference in tooth base portion 217, therefore, it is possible to suppress substrate further with groove portion 281 to the impact of the magnetic circuit of motor 1. Further, owing to the circumferential width in each bearing groove portion 282 is less than the minimum width of the minimum width of the circumference of tooth 215 and the circumference in tooth base portion 217, therefore, it is possible to suppress bearing further with groove portion 282 to the impact of the magnetic circuit of motor 1.
Figure 29 is the longitudinal section of the configuration of other the preferred sensors 221 representing motor 1. In the example shown in Figure 29, each sensor 221 be positioned at the position on the lower, upper end than insulation part 212 at least partially. In other words, each sensor 221 at least partially with insulation part 212 a part diametrically to putting.Consequently, it is possible to the upper and lower reducing motor 1 to height.
Figure 30 is the longitudinal section of the configuration of other the preferred head bearings 41 representing motor 1. In the example shown in Figure 30, head bearing 41 is positioned at the base openings 222 of circuit card 22. The edge of base openings 222 keeps the head bearing receiving part 244 of frame 24 with head bearing 41 diametrically to putting across head bearing. Consequently, it is possible to the upper and lower reducing motor 1 to height.
Figure 31 is the figure of an example of the manufacturing process representing motor 1. When manufacturing motor 1, first, by segmentation insulation division 218 is positioned over wire reel, and by Wire-wound in segmentation insulation division 218, as shown in figs.10 and 11, formation coil 213 around segmentation insulation division 218. Identical with this, respectively Wire-wound is formed multiple coil 213 (step S11) in multiple segmentation insulation division 218. By step S11, get out the segmentation insulation division 218 that six are wound with coil 213.
As shown in figure 32, next, split the tooth base portion 217 that insulation division 218 is installed on interior iron core 210 together with coil 213. The insulation part opening 219 of tooth base portion 217 insertion segmentation insulation division 218. Figure 32 is the stereographic map of the state representing the tooth base portion 217 that first segmentation insulation division 218 has been installed to interior iron core 210. When manufacturing motor 1, being inserted the insulation part opening 219 of multiple segmentation insulation division 218 respectively by the tooth base portion 217 of multiple tooth 215, multiple segmentation insulation division 218 is installed on interior iron core 210 (step S12).
Next, interior iron core 210 inserts outer iron core and the radially inner side of core-back 214, and its radially outer end in tooth base portion 217 of multiple tooth 215 is connected (step S13) with the inner peripheral surface of core-back 214. Thus, form multiple tooth 215, multiple segmentation insulation division 218 and namely insulate part 212 and multiple coil 213 is arranged at the stator 21 (with reference to Fig. 5) of radially inner side of core-back 214. In step s 13, such as interior iron core 210 is pressed into core-back 214. By step S11 to S13, as mentioned above, it is necessary, stator 21 can easily be assembled.
If forming stator 21, then as shown in figure 18, multiple substrate holder foots 232 of substrate holder 23 insert multiple substrate groove portion 281 of stator core 211 respectively and are fixed (step S14) from top. Thus, circuit card 22 and substrate holder 23 are fixed on stator core 211.
Next, as shown in Figure 26 and Figure 27, head bearing keeps multiple head bearing of frame 24 to keep frame foot 242 to insert multiple bearing groove portion 282 of stator core 211 from top respectively and fixed (step S15).
If step S15 terminates, then substrate holder 23 and stator 21 etc. are inserted the radially inner side of housing 26. The operation of the insertion housing 26 such as stator 21 such as can carry out before step S15.
Next, the radially inner side of iron core 210 in the rotating part 3 being provided with head bearing 41 and lower bearing 42 in advance being inserted from below. In other words, the radially inner side of iron core 210 in being inserted from below by axle 31, described axle 31 is fixed with rotor iron core 32 and rotor magnet 33 in advance, and is provided with head bearing 41 on top in advance, is provided with lower bearing 42 (step S16) in bottom. Then, the top of axle 31 and head bearing 41, by the base openings 222 of circuit card 22 kept by substrate holder 23, are positioned at than circuit card 22 position by the top. Head bearing 41 is contained in the head bearing receiving part 244 that head bearing keeps frame 24.
Thus, base openings 222 is passed through by the top of axle 31 and head bearing 41, it is possible to when head bearing 41 is installed on axle 31 in advance, it is easy to ground assembling stator 21, rotating part 3, circuit card 22 and substrate holder 23. Head bearing 41 and lower bearing 42 are such as by being pressed into or be installed on axle 31 by the bonding of caking agent etc.
Then, lower bearing keeps the lower bearing of frame 25 to keep frame foot 252 to insert multiple bearing groove portion 282 and multiple substrate groove portion 281 respectively from below and fixed (step S17). Now, lower bearing 42 is contained in the lower bearing receiving part 254 that lower bearing keeps frame 25. Thus, motor 1 is formed.
Above-mentioned steps S14 also can carry out before the operation that interior iron core 210 inserts core-back 214 in step s 13. Such as, substrate holder 23 also can when substrate holder foot 232 being fixed on substrate groove portion 281, one-body molded with stator core 211. Consequently, it is possible to simplify the manufacture of motor 1.
Figure 33 is the figure of other examples of the manufacturing process representing motor 1. Step S21 to S23 is identical with above-mentioned steps S11～S13. If step S23 terminates, then bearing is descended to keep the lower bearing of frame 25 to keep frame foot 252 to insert multiple bearing groove portion 282 and multiple substrate groove portion 281 respectively from below and fixed (step S24).
Next, the radially inner side of rotating part 3 from iron core 210 in the insertion of top of head bearing 41 and lower bearing 42 will be installed in advance. In other words, the radially inner side of iron core 210 in being inserted from top by axle 31, described axle 31 is fixed with rotor iron core 32 and rotor magnet 33 in advance, and is provided with head bearing 41 on top in advance, is provided with lower bearing 42 (step S25) in bottom. Lower bearing 42 is contained in the lower bearing receiving part 254 that lower bearing keeps frame 25.
Next, multiple substrate holder foots 232 of substrate holder 23 insert multiple substrate groove portion 281 of stator core 211 respectively and are fixed (step S26) from top. Thus, circuit card 22 and substrate holder 23 are fixed on stator core 211. Now, the top of axle 31 and head bearing 41 base openings 222 of circuit card 22 by being kept by substrate holder 23, is positioned at than circuit card 22 position by the top. Thus, base openings 222 is passed through by the top of axle 31 and head bearing 41, it is possible to when head bearing 41 is installed on axle 31 in advance, it is easy to ground assembling stator 21, rotating part 3, circuit card 22 and substrate holder 23.
If step S26 terminates, then substrate holder 23 and stator 21 etc. are inserted the radially inner side of housing 26. The operation of the insertion housings 26 such as stator 21 such as can also be carried out before step S26.
Then, head bearing keeps multiple head bearing of frame 24 to keep frame foot 242 to insert multiple bearing groove portion 282 of stator core 211 from top respectively and fixed (step S27). Now, head bearing 41 is contained in the head bearing receiving part 244 that head bearing keeps frame 24. Thus, motor 1 is formed.
The structure of said motor 1 can carry out various change.
Such as, in stator core 211, the parts that core-back 214 and multiple tooth 215 also can form as one. In this case, it is preferable that the tooth terminal part 216 of multiple tooth 215 need not connect in the circumferential, but separated from one another in the circumferential.
Insulation part 212 does not necessarily comprise and the segmentation insulation division 218 of tooth 215 equal amts.Insulation part 212 such as also can comprise a upside insulation division of the upper part covering multiple tooth 215 and cover a lower-side insulation portion of lower part of multiple tooth 215.
The quantity in substrate holder foot 232 and substrate groove portion 281 also can suitably change. Head bearing keeps frame foot 242, lower bearing to keep the quantity in frame foot 252 and bearing groove portion 282 also can suitably change. The position of the substrate groove portion 281 of stator core 211 and the circumference in bearing groove portion 282 also can suitably be changed. The shape in substrate groove portion 281 and size also can be different from the shape in bearing groove portion 282 and size.
The substrate maintaining part 231 of substrate holder 23 is not necessarily ring-type. Further, as long as the circumference limiting the circuit card 22 in substrate maintaining part 231 is mobile, it is possible to movement limiting portion 233 need not be arranged. Such as, when keeping substantially rectangular circuit card 22 in substrate holder 23, it is possible to using the position of multiple L fonts in multiple corners of retaining circuit plate 22 respectively as substrate maintaining part 231. Being configured along multiple corner of circuit card 22 respectively by the position of the plurality of L font, the circumference limiting circuit card 22 is mobile.
Keeping in frame 25 at lower bearing, it is possible to arrange the lower bearing with bearing groove portion 282 equal amts and keep frame foot 252, lower bearing keeps frame foot 252 not insert substrate groove portion 281, and an insertion bearing groove portion 282 is also fixed. In this case, as long as substrate groove portion 281 extends downward from upper end at the periphery of stator core 211, it is not necessary to arrive lower end. Head bearing keeps frame 24 and lower bearing to keep frame 25 need not be fixed on bearing groove portion 282, also need not be directly fixed on stator core 211.
The structure of said motor 1 can be used in the various equipment except power tool.
Also can carry out appropriately combined as long as the structure in above-mentioned enforcement mode and each variation does not produce contradiction mutually.
The present invention can be used in the motor of various purposes.
Claims (14)
1. a motor, comprising:
The stator core of ring-type, it is by centered by center axis vertically,
Multiple coil, described multiple coil is assemblied in multiple teeth of described stator core across insulation part;
Bearing portion, it has head bearing and lower bearing;
Axle, it is supported as can rotate centered by the axis of described center by described bearing portion;
Rotor iron core, it is fixed on described axle;
Rotor magnet, it is fixed on described rotor iron core, and described rotor magnet is configured at the radially inner side of described stator core;
Circuit card, the lower surface at described circuit card is provided with the sensor of the position detecting described rotor magnet; And
Substrate holder, it keeps described circuit card above described rotor magnet,
Described motor is characterised in that,
Described substrate holder comprises:
Substrate maintaining part, it keeps the outer edge of described circuit card, and described substrate maintaining part limits the circumferential mobile of described circuit card; And
Multiple substrate holder foot, described multiple substrate holder foot gives prominence to downward from described substrate maintaining part, and described multiple substrate holder foot is individually fixed in multiple substrate groove portions that the periphery at described stator core extends downward from upper end.
2. motor according to claim 1, it is characterised in that,
The central part of the circumference in each substrate groove portion is arranged side by side diametrically with the central part of the circumference of the tooth of the radially inner side being positioned at described each substrate groove portion.
3. motor according to claim 2, it is characterised in that,
Described sensor be positioned at the position on the lower, upper end than described insulation part at least partially.
4. motor according to claim 3, it is characterised in that,
Described motor also comprises:
Head bearing keeps frame, and it keeps described head bearing above described rotor iron core; And
Lower bearing keeps frame, and it keeps described lower bearing in the lower section of described rotor iron core,
Described axle is given prominence to upward from the base openings of the central part being arranged at described circuit card,
Described head bearing keeps frame to comprise:
Head bearing maintaining part, it keeps the described head bearing on the top of the described axle of supporting; And
Multiple head bearing keeps frame foot, and described multiple head bearing keeps frame foot to give prominence to downward from described head bearing maintaining part, and is individually fixed in multiple bearing groove portions that the described periphery at described stator core extends downward from upper end,
Described lower bearing keeps frame to comprise:
Lower bearing maintaining part, it keeps the described lower bearing of the bottom of the described axle of supporting; And
Multiple lower bearing keeps frame foot, and described multiple lower bearing keeps frame foot to give prominence to upward from described lower bearing maintaining part, and is individually fixed in multiple bearing groove portions that the described periphery at described stator core extends upward from lower end.
5. motor according to claim 4, it is characterised in that,
When top view, the profile of described base openings is bigger than the profile of described head bearing.
6. motor according to claim 5, it is characterised in that,
Described head bearing is positioned at described base openings, and the edge of described base openings and described head bearing are diametrically to putting.
7. motor according to claim 6, it is characterised in that,
Described axle is given prominence to upward from the base openings of the central authorities being arranged at described circuit card,
Be provided with communicating pores or breach at described circuit card, described communicating pores or breach insert for the wire from described multiple coil and independently arrange with described base openings.
8. motor according to any one of right 1 to 7, it is characterised in that,
Described substrate holder is resin-made,
Described substrate holder has the isolation part between described multiple coil and described circuit card,
A part for described isolation part and described multiple coil is in the vertical direction to putting, and a part for described isolation part and described circuit card is in the vertical direction to putting.
9. motor according to any one of claim 1 to 7, it is characterised in that,
Described substrate maintaining part has movement limiting portion, and described movement limiting portion is moved by the circumference limiting described circuit card chimeric with a part for described circuit card.
10. motor according to any one of claim 1 to 7, it is characterised in that,
Described multiple tooth comprises respectively:
Tooth terminal part, it is circumferentially expanded; And
Tooth base portion, it is outstanding from the circumferential central part of described tooth terminal part towards radial outside,
Described stator core comprises:
The interior iron core of ring-type, it is connected and formed in the circumferential by the described tooth terminal part of described multiple tooth; And
The outer iron core of ring-type, it is positioned at the radial outside of described iron core, and the described its radially outer end in tooth base portion of described multiple tooth is connected with the inner peripheral surface of the outer iron core of described ring-type,
Described insulation part comprises separate multiple segmentation insulation divisions,
It is respectively arranged with insulation part opening that is radially through and that insert for described tooth base portion at described multiple segmentation insulation division.
11. motors according to claim 10, it is characterised in that,
Described substrate holder and described outer iron core are one-body molded.
The manufacture method of 12. 1 kinds of motors, described motor comprises:
The stator core of ring-type, it is by centered by center axis vertically;
Multiple coil, described multiple coil is assemblied in multiple teeth of described stator core across insulation part;
Bearing portion, it has head bearing and lower bearing;
Axle, it is supported as can rotate centered by the axis of described center by described bearing portion;
Rotor iron core, it is fixed on described axle;
Rotor magnet, it is fixed on described rotor iron core, and described rotor magnet is configured at the radially inner side of described stator core;
Circuit card, the lower surface at described circuit card is provided with the sensor of the position detecting described rotor magnet; And
Substrate holder, it keeps described circuit card above described rotor magnet,
Described substrate holder comprises:
Substrate maintaining part, it keeps the outer edge of described circuit card, and described substrate maintaining part limits the circumferential mobile of described circuit card; And
Multiple substrate holder foot, described multiple substrate holder foot gives prominence to downward from described substrate maintaining part, and described multiple substrate holder foot is individually fixed in multiple substrate groove portions that the periphery at described stator core extends downward from upper end
Described multiple tooth comprises respectively:
Tooth terminal part, it is circumferentially expanded; And
Tooth base portion, it is outstanding from the circumferential central part of described tooth terminal part towards radial outside,
Described stator core comprises:
The interior iron core of ring-type, it is by connecting the described tooth base portion of described multiple tooth in the circumferential and formed; And
The outer iron core of ring-type, it is positioned at the radial outside of described iron core,
Described insulation part comprises separate multiple segmentation insulation divisions,
It is respectively arranged with radially through insulation part opening, when manufacturing described motor at described multiple segmentation insulation division, it is characterised in that, comprising:
A) operation, in described a) operation, is wound in wire described multiple segmentation insulation division respectively and forms described multiple coil;
B) operation, in described b) operation, does not insert the described insulation part opening of described multiple segmentation insulation division by the described tooth base section of described multiple tooth; And
C) operation, in described c) operation, inserts the radially inner side of described outer iron core by described interior iron core, and the described its radially outer end in tooth base portion of described multiple tooth is connected with the inner peripheral surface of described outer iron core.
The manufacture method of 13. motors according to claim 12,
Described motor also comprises:
Head bearing keeps frame, and it keeps described head bearing above described rotor iron core; And
Lower bearing keeps frame, and it keeps described lower bearing in the lower section of described rotor iron core,
Described head bearing keeps frame to comprise:
Head bearing maintaining part, it keeps the described head bearing on the top of the described axle of supporting; And
Multiple head bearing keeps frame foot, and described multiple head bearing keeps frame foot to give prominence to downward from described head bearing maintaining part,
Described lower bearing keeps frame to comprise:
Lower bearing maintaining part, it keeps the described lower bearing of the bottom of the described axle of supporting; And
Multiple lower bearing keeps frame foot, and described multiple lower bearing keeps frame foot to give prominence to upward from described lower bearing maintaining part,
Central part at described circuit card is provided with the base openings bigger than the profile of described head bearing of the profile when top view, it is characterised in that, comprising:
The described multiple substrate holder foots keeping the described substrate holder of described circuit card, in described d) operation, are individually fixed in described multiple substrate groove portion by d) operation;
E) operation, in described e) operation, keeps frame foot to be individually fixed in multiple bearing groove portions of end the described periphery of described stator core arrives from upper end by described multiple head bearing;
F) operation, in described f) operation, described rotor iron core and described rotor magnet will be fixed with, and described head bearing is installed on top, the described axle being provided with described lower bearing in bottom is inserted in the radially inner side of described interior iron core from below, and the described top of described axle and described head bearing are by described base openings, and
G) operation, in described g) operation, keeps frame foot to be individually fixed in described multiple bearing groove portion on described multiple lower bearing.
The manufacture method of 14. motors according to claim 13, it is characterised in that,
Described motor also comprises:
Head bearing keeps frame, and it keeps described head bearing above described rotor iron core; And
Lower bearing keeps frame, and it keeps described lower bearing in the lower section of described rotor iron core,
Described head bearing keeps frame to comprise:
Head bearing maintaining part, it keeps the described head bearing on the top of the described axle of supporting; And
Multiple head bearing keeps frame foot, and described multiple head bearing keeps frame foot to give prominence to downward from described head bearing maintaining part,
Described lower bearing keeps frame to comprise:
Lower bearing maintaining part, it keeps the described lower bearing of the bottom of the described axle of supporting; And
Multiple lower bearing keeps frame foot, and described multiple lower bearing keeps frame foot to give prominence to upward from described lower bearing maintaining part,
Central part at described circuit card is provided with the base openings bigger than the profile of described head bearing of the profile when top view, it is characterised in that, comprising:
H) operation, in described h) operation, keeps frame foot to be individually fixed in multiple bearing groove portions of end the described periphery of described stator core arrives from upper end by described multiple lower bearing;
I) operation, in described i) operation, will be fixed with described rotor iron core and described rotor magnet, and be provided with described head bearing on top, and the described axle being provided with described lower bearing in bottom is inserted in the radially inner side of described interior iron core from top;
J) operation, in described j) operation, make the described top of described axle and the described head bearing described base openings of described circuit card by being kept by described substrate holder, and described multiple substrate holder foot is individually fixed in described multiple substrate groove portion; And
K) operation, in described k) operation, keeps frame foot to be individually fixed in described multiple bearing groove portion described multiple head bearing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-245261 | 2014-12-03 | ||
| JP2014245261A JP6521217B2 (en) | 2014-12-03 | 2014-12-03 | Motor and method of manufacturing motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105680659A true CN105680659A (en) | 2016-06-15 |
Family
ID=55948082
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520963759.XU Expired - Fee Related CN205249013U (en) | 2014-12-03 | 2015-11-26 | Motor |
| CN201510845086.2A Pending CN105680659A (en) | 2014-12-03 | 2015-11-26 | Motor and manufacturing method of same |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520963759.XU Expired - Fee Related CN205249013U (en) | 2014-12-03 | 2015-11-26 | Motor |
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| Country | Link |
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| JP (1) | JP6521217B2 (en) |
| CN (2) | CN205249013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301947A (en) * | 2017-07-25 | 2019-02-01 | 日本电产高科电机株式会社 | Stator and motor with stator |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6521217B2 (en) * | 2014-12-03 | 2019-05-29 | 日本電産テクノモータ株式会社 | Motor and method of manufacturing motor |
| WO2018030480A1 (en) * | 2016-08-12 | 2018-02-15 | 日本電産株式会社 | Motor |
| JP6795356B2 (en) * | 2016-09-06 | 2020-12-02 | 日本電産サンキョー株式会社 | motor |
| JP2018157613A (en) * | 2017-03-15 | 2018-10-04 | 日本電産サンキョー株式会社 | motor |
| CN109026752A (en) * | 2018-09-29 | 2018-12-18 | 赛默（厦门）智能科技有限公司 | A kind of electronic water pump for automobile |
| JP7306021B2 (en) * | 2019-03-29 | 2023-07-11 | 株式会社富士通ゼネラル | Electric motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6521217B2 (en) | 2019-05-29 |
| CN205249013U (en) | 2016-05-18 |
| JP2016111765A (en) | 2016-06-20 |
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Application publication date: 20160615 |