CN1377122A - Brushless DC motor with radial air gap - Google Patents
Brushless DC motor with radial air gap Download PDFInfo
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- CN1377122A CN1377122A CN 01104300 CN01104300A CN1377122A CN 1377122 A CN1377122 A CN 1377122A CN 01104300 CN01104300 CN 01104300 CN 01104300 A CN01104300 A CN 01104300A CN 1377122 A CN1377122 A CN 1377122A
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Abstract
The invention relates to a direct current motor having a radial air gap and without an electric brush. The rotating axis of the rotor is rotated in the magnetic tube of the stator. The external wall of the magnetic tube combines with a winding seat. There are upper and lower pole pieces at the two ends of the winding seat. There are upper and/or lower magnet pole faces extended from its lower and upper parts of the circumference of the upper and lower pole pieces. Relevant induction is produced between each magnet pole face and the permanent magnetic iron of the rotor. The upper and lower pole pieces are interlaced. There are larger size throughs on the magnet pole faces of the pole pieces around the winding seat so that it is easy for the leading end of enamel wire to be led out.
Description
The enamelled wire that the dc brushless motor of the relevant a kind of radial air gap of the present invention, this motor have big induction area and stator coil thereof is easy to draw the threading assembling.
See also shown in Figure 1ly, it is a kind of brshless DC motor and stator structure thereof, is to be combined with coil 902, upper and lower pole piece 903,904 and a circuit board 905 by a metal central siphon 901 external diameters.This kind traditional stator structure, upper and lower pole piece itself needs to be formed by the folded system of several silicon steel sheets, to increase the magnetic field induction area of upper and lower pole piece 903,904 and rotor 907 set permanent magnets 908, so increase of pole piece sheet number, can make and make procedure increase, part material increase, and product cost increases.
In addition, see also shown in Figure 2, it is the U.S. the 4th, 891, No. 567 patent cases, on it, lower magnetic pole sheet 911 is to be combined in stator seat 910, on being somebody's turn to do, lower magnetic pole sheet 911 respectively has the pole-face 912 of vertical bending, by on this, the pole-face 912 of lower magnetic pole sheet 911 vertical bendings is responded to mutually with the permanent magnet 914 of rotor 913, because on being somebody's turn to do, two pole-faces 912 of lower magnetic pole sheet 911 are the direction settings that form towards being close, on making, two pole-faces 912 of lower magnetic pole sheet 911 cover on the outer rim of stator seat 910 again, on being somebody's turn to do, though lower magnetic pole sheet 911 has the pole-face 912 of big induction area, but the enamelled wire exit desire of its coil is from last, when drawing between the pole-face 912 of lower magnetic pole sheet 911, the insulating barrier of this enamelled wire very easily by pole-face 912 burr scrape cut bad, make coil windings after being subjected to cranking current pulse for a long time, very easily cause the coil windings deterioration, cause motor rotation bad, shorten the useful life of motor.Again, if pole-face 912 width that will this upper and lower pole piece 911 reduce, make the enamelled wire exit of coil be easy to draw, then its pole-face 912 will reduce again with the induction area of rotor, and therefore, the fraction defective during this motor manufacturing generally improves.
See also shown in Figure 3ly again, its No. 88104105 " brshless DC motor and stator thereof " patent case in Taiwan that is the applicant applies for discloses, and is to be provided with magnetic conductive tube 922 by first pole piece 921, and this magnetic conductive tube 922 can be for 924 combinations of second pole piece.And, these magnetic conductive tube 922 outer walls are with insulating case 923, but insulating case 923 winding arounds, and this first pole piece 921 and second pole piece 922 respectively are provided with the pole-face 925,926 that extends towards opposing direction, therefore, this brshless DC motor and stator thereof also have the pole-face of big induction area, and this coil directly is wrapped on the insulating case 923, so this enamelled wire also has and is difficult for being scraped to cut undermining the insulating barrier advantage.
The dc brushless motor that the purpose of this invention is to provide a kind of radial air gap, the pole piece of its stator have the magnetic pole strength of big induction area and the permanent magnet of rotor interacts, to increase the outputting torsion of motor.
A further object of the present invention provides a kind of dc brushless motor of radial air gap, it can make the magnetic pole strength that is centered around coil holder have big short slot, can can be easy to be drawn for the enamelled wire that is wound on the coil holder, scraped and cut and insulating barrier is damaged to reduce enamelled wire, and stator there is the magnetic pole strength of big induction area.
Another object of the present invention provides a kind of dc brushless motor of radial air gap, and it has the processing of being easy to and reduces production costs.
The object of the present invention is achieved like this: a kind of direct current of radial air gap does not have the exhibition motor, it is characterized in that: it comprises: rotor has a rotation axis and annular permanent magnnet; Stator is rotated by the rotation axis for rotor in the magnetic conductive tube, magnetic conductive tube outer wall joint line ring support, and these coil holder two ends have upper and lower pole piece respectively; The periphery of this upper and lower pole piece respectively has to this pole piece upper and lower to the upper and lower magnetic pole strength that extends, this magnetic pole strength is responded to mutually with the permanent magnet of rotor, and the magnetic pole strength of upper and lower pole piece is mutually and is crisscross arranged, being centered around the lower magnetic pole face of upper pole piece of coil holder or the last magnetic pole strength of lower magnetic pole sheet, is to have short slot to draw for the exit of the set enamelled wire of coil holder.
Its stator is to pass through the wiring ring support and at the pole piece of these coil holder two ends by a magnetic conductive tube.
Its magnetic conductive tube is to be formed directly into the one pole piece.
Its magnetic conductive tube is to be respectively formed at this two pole piece, passes through the wiring ring support jointly by the magnetic conductive tube on this two pole piece, and the mutual butt of this two magnetic conductive tube.
Its short slot is to be arranged with by last magnetic pole strength of each pole piece itself or lower magnetic pole face to form.
The last magnetic pole strength and the lower magnetic pole face of its each pole piece itself are to be mutually the setting of staggering, and make two pole piece corrals form short slot at the magnetic pole strength of coil holder.
Last magnetic pole strength of its each pole piece itself and lower magnetic pole face are to form width inequality, make two pole piece corrals form short slot at the magnetic pole strength of coil holder by its stand out.
The last magnetic pole strength of its pole piece and lower magnetic pole face are the upper and lower ends that is located at pole piece respectively, and are positioned at and are mutually the opposite position that staggers.
The first side length of the set magnetic pole strength of its each pole piece, thickness, highly be greater than second side length, thickness, highly.
The purpose of the present invention's invention also can be achieved in that a kind of dc brushless motor of radial air gap, and it is characterized in that: it comprises: rotor has a rotation axis and annular permanent magnnet; Stator, rotate by the rotation axis for rotor in the magnetic conductive tube, magnetic conductive tube outer wall joint line ring support, these coil holder two ends have upper and lower pole piece respectively, the periphery of this upper and lower pole piece has last magnetic pole strength and the lower magnetic pole face that extends to form to equidirectional, this magnetic pole strength is responded to mutually with the permanent magnet of rotor, and the magnetic pole strength of upper and lower pole piece is mutually and is crisscross arranged, by the magnetic pole strength of one pole piece be centered around coil holder around, and the magnetic pole strength by this pole piece forms short slot each other, draws for the exit of the set enamelled wire of coil holder.
Its stator passes through the wiring ring support by a magnetic conductive tube and forms at the pole piece of these coil holder two ends.
Its magnetic conductive tube is to be formed directly into the one pole piece.
Its magnetic conductive tube is to be respectively formed at this two pole piece, passes through the wiring ring support jointly by the magnetic conductive tube on this two pole piece, and the mutual butt of this two magnetic conductive tube.
Its short slot is to form between magnetic pole strength by each pole piece itself.
The first side length of the set magnetic pole strength of its each pole piece, thickness, highly be greater than second side length, thickness, highly.
The present invention is positioned at stator one magnetic conductive tube by rotor with a rotation axis to rotate, magnetic conductive tube outer wall joint line ring support, these coil holder two ends have pole piece up and down respectively, the periphery of this upper and lower pole piece respectively has to going up and/or the lower magnetic pole face that this pole piece above-below direction extends, this each magnetic pole strength becomes relative induction with the permanent magnet of rotor, and the magnetic pole strength of upper and lower pole piece is mutually and is crisscross arranged, the magnetic pole strength that is centered around coil holder has big short slot, draws easily for the exit of the set enamelled wire of coil holder.
Following conjunction with figs. and embodiment illustrate structure of the present invention, feature and effect:
Fig. 1 is first kind of conventional construction exploded perspective view.
Fig. 2 is second kind of conventional construction exploded perspective view.
Fig. 3 is the third conventional construction exploded perspective view.
Fig. 4 is the first embodiment of the invention exploded perspective view.
Fig. 5 is the local combination stereogram of first embodiment of the invention.
Fig. 6 is the first embodiment of the invention combination section.
Fig. 7 is stator example two exploded perspective views of the present invention.
Fig. 8 is stator example three exploded perspective views of the present invention.
Fig. 9 is stator example four exploded perspective views of the present invention.
Figure 10 is stator example five exploded perspective views of the present invention.
Figure 11 is the second embodiment of the invention exploded perspective view.
Figure 12 is the third embodiment of the invention exploded perspective view.
See also shown in Figure 4ly, it is a first embodiment of the invention, includes rotor 1, stator 2 members, and rotor 1 can be conventional construction, is can be rotated in the magnetic conductive tube 21 of stator 2 by a rotation axis 11, and this rotor 1 has annular permanent magnnet 12.Stator 2 is to pass through wiring ring support 22 by a magnetic conductive tube 21, and one pole piece 23 is respectively arranged at these coil holder 22 2 ends, magnetic conductive tube 21 1 ends have a flange 211, by flange 211 can limit this combined coil holder 22, pole piece 23 cannot be deviate from, and is provided with rotation axis 11 rotation that bearing 212 can be supported rotor 1 in the magnetic conductive tube 21.Coil holder 22 is wound with enamelled wire 221, and this enamelled wire 221 has exit 222 to connect drawing of power supply source.Pole piece 23 is two ends that are placed in coil holder 22 respectively, according to drawing, pole piece 23 above coil holder 22 is hereinafter referred to as upper pole piece 23a, pole piece 23 below coil holder 22 is hereinafter referred to as lower magnetic pole sheet 23b, this pole piece 23 has centre bore 231 and is passed through by magnetic conductive tube 21 and connect, because pole piece 23 peripheries have magnetic pole strength, this magnetic pole strength includes magnetic pole strength 232, lower magnetic pole face 233, therefore, this pole piece 23 promptly has bigger magnetic pole strength and can respond to the permanent magnet 12 of rotor 1, this upper pole piece 23a respectively becomes isogonism to distribute according to pole piece 23 centers with the magnetic pole strength of lower magnetic pole sheet 23b, and, this upper pole piece 23a is into alternative ring with the magnetic pole strength of lower magnetic pole sheet 23b and is located at coil holder 22 all sides, moreover, magnetic pole strength 232 is established short slot 234 on the lower magnetic pole face 233 of this upper pole piece 23a or lower magnetic pole sheet 23b, draw (seeing also shown in Figure 5) by this short slot 234 for the exit 222 of coil holder 22, moreover, the length of the first side 235 of the pole piece 23 set magnetic pole strengths of present embodiment can be greater than the length of second side 236, or the magnetic pole strength thickness of its first side 235 or highly be can be greater than the magnetic pole strength thickness of second side 236 or height, therefore, this pole piece 23 promptly can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
See also shown in Figure 6, it is the combination section of first preferred embodiment, its be by magnetic conductive tube 21 pass through be connected to coil holder 22 and on, under upper pole piece 23a, lower magnetic pole sheet 23b, the lower magnetic pole face 233 of this upper pole piece 23a encircles alternately for 232 one-tenth with the last magnetic pole strength of lower magnetic pole sheet 23b and is located at coil holder 22 all sides, therefore, the stator 2 of present embodiment has the magnetic pole strength of big induction area, can respond to the permanent magnet 12 of rotor 1, and the last magnetic pole strength 232 of the lower magnetic pole face 233 that is looped around the upper pole piece 23a around the coil holder 22 and lower magnetic pole sheet 23b has bigger short slot 234, exit 222 for enamelled wire 221 is conveniently drawn, make the work of drawing of this enamelled wire 221 become convenient, and can avoid its insulating barrier by scratch.
See also shown in Figure 7, it is stator 2 another preferred embodiments of the present invention, this stator 2 also is to pass through wiring ring support 22 by magnetic conductive tube 21, and pole piece 24 is arranged respectively at two ends of coil holder 22, above coil holder 22 upper pole piece 24a, below coil holder 22 lower magnetic pole sheet 24b, this pole piece 24 has centre bore 241 and is passed through by magnetic conductive tube 21 and connect, has magnetic pole strength by these pole piece 24 peripheries, this magnetic pole strength includes magnetic pole strength 242, lower magnetic pole face 243, so this pole piece 24 has permanent magnet 12 inductions of the magnetic pole strength and the rotor 1 of big induction area.Again, this magnetic pole strength respectively becomes isogonism to distribute according to pole piece 24 centers, and should go up magnetic pole strength 242 is to be mutually the setting of staggering with lower magnetic pole face 243, therefore, 242 one-tenth of the last magnetic pole strengths of the lower magnetic pole face 243 of upper pole piece 24a and lower magnetic pole sheet 24b are when ring is located at all side of coil holder 22 alternately, be formed with bigger short slot 244 therebetween, can draw for the exit 222 of coil holder 22 by this short slot 244.Therefore, the stator 2 of present embodiment has permanent magnet 12 inductions of the magnetic pole strength and the rotor 1 of big induction area, and ring is located at the lower magnetic pole face 243 of upper pole piece 24a of coil holder 22 all sides and the last magnetic pole strength 242 of lower magnetic pole sheet 24b, also there is bigger short slot 244 conveniently to be drawn for the exit 222 of enamelled wire 221, make the work of drawing of this enamelled wire 221 become convenient, and can avoid its insulating barrier by scratch.Moreover, the length of the first side 245 of the pole piece 24 set magnetic pole strengths of present embodiment, thickness or highly also can be greater than length, thickness or the height of second side 246, therefore, this pole piece 24 also can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
See also shown in Figure 8, it is stator 2 another preferred embodiments of the present invention, this stator 2 also is to pass through wiring ring support 22 by magnetic conductive tube 21, and, two ends at coil holder 22 have pole piece 25 respectively, above coil holder 22 upper pole piece 25a, below coil holder 22 lower magnetic pole sheet 25b, this pole piece 25 has centre bore 251 and is passed through by magnetic conductive tube 21 and connect, has magnetic pole strength by these pole piece 25 peripheries, this magnetic pole strength includes magnetic pole strength 252, lower magnetic pole face 253, so the magnetic pole strength that this pole piece 25 promptly has big induction area is responded to mutually with the permanent magnet 12 of rotor 1.Again, this magnetic pole strength respectively becomes isogonism to distribute according to pole piece 25 centers, and should go up magnetic pole strength 252 and be into width setting inequality with lower magnetic pole face 253, wherein go up the width of the width of magnetic pole strength 252 greater than lower magnetic pole face 253, therefore, 252 one-tenth of the last magnetic pole strengths of the lower magnetic pole face 253 of upper pole piece 25a and lower magnetic pole sheet 25b can form short slot 254 by its stand out when ring is located at all side of coil holder 22 alternately.Draw for the exit 222 of coil holder 22 by this short slot 254.Therefore, the stator 2 of present embodiment is that the magnetic pole strength with big induction area is responded to mutually with the permanent magnet 12 of rotor 1, and ring is located at the lower magnetic pole face 253 of upper pole piece 25a of coil holder 22 all sides and the last magnetic pole strength 252 of lower magnetic pole sheet 25b, also having bigger short slot 254 is conveniently drawn for the exit 222 of enamelled wire 221, make the work of drawing of this enamelled wire 221 become convenient, and can avoid its insulating barrier by scratch.Moreover, height, length or the thickness of the first side 255 of the pole piece 25 set magnetic pole strengths of present embodiment can be greater than height, length or the thickness of another side 256, therefore, this pole piece 25 promptly can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
See also shown in Figure 9, it is stator 2 an of the present invention preferred embodiment again, this stator 2 also is to pass through wiring ring support 22 by magnetic conductive tube 21, and, two ends at coil holder 22 have pole piece 26 respectively, above coil holder 22 upper pole piece 26a, below coil holder 22 lower magnetic pole sheet 26b, this pole piece 26 has centre bore 261 and is passed through by magnetic conductive tube 21 and connect, has magnetic pole strength by these pole piece 26 peripheries, this magnetic pole strength includes magnetic pole strength 262, lower magnetic pole face 263, therefore, this pole piece 26 promptly has the magnetic pole strength of big induction area and responds to mutually with the permanent magnet 12 of rotor 1.Again, this magnetic pole strength respectively becomes isogonism to distribute according to pole piece 26 centers, and should go up magnetic pole strength 262 is to be located at the upper and lower end of pole piece 26 respectively and to be mutually the opposite position that staggers with lower magnetic pole face 263, therefore, the last magnetic pole strength of the lower magnetic pole face 263 of upper pole piece 26a and lower magnetic pole sheet 26b encircles when being located at coil holder 22 peripheries for 262 one-tenth alternately, 262 of its lower magnetic pole face 263 and last magnetic pole strengths promptly form short slot 264, lack the exit 222 that increases 264 confession coil holders 22 by this and draw.Therefore, the stator 2 of present embodiment has the magnetic pole strength of big induction area and responds to mutually with the permanent magnet 12 of rotor 1, and ring is located at the lower magnetic pole face 263 of upper pole piece 26a of coil holder 22 peripheries and the last magnetic pole strength 262 of lower magnetic pole sheet 26b has bigger short slot 264, therefore, the exit 222 of enamelled wire 221 can conveniently be drawn, make the work of drawing of this enamelled wire 221 become convenient, and can avoid its insulating barrier by scratch.Moreover, length, height or the thickness of the first side 265 of the pole piece 26 set magnetic pole strengths of present embodiment also can be greater than length, height or the thickness of second side 266, therefore, this pole piece 26 promptly can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
See also shown in Figure 10, it is stator 2 an of the present invention preferred embodiment again, this stator 2 also is to pass through wiring ring support 22 by magnetic conductive tube 21, and, two ends at coil holder 22 have pole piece 27 respectively, above coil holder 22 upper pole piece 27a, below coil holder 22 lower magnetic pole sheet 27b, this pole piece 27 has centre bore 271 and is passed through by magnetic conductive tube 21 and connect, has magnetic pole strength 272 by these pole piece 27 peripheries, on being somebody's turn to do, lower magnetic pole sheet 27a, the magnetic pole strength 272 of 27b is to extend in the same direction simultaneously, as shown in the figure, the magnetic pole strength 272 of this two pole piece 27 is to extend upward (according to drawing) simultaneously, therefore, this pole piece 27 promptly has the magnetic pole strength 272 of big induction area and responds to mutually with the permanent magnet 12 of rotor 1, this magnetic pole strength 272 respectively becomes isogonism to distribute according to pole piece 27 centers again, and the magnetic pole strength 272 of this upper pole piece 27a is to become to be crisscross arranged with the magnetic pole strength 272 of lower magnetic pole sheet 27b, and the magnetic pole strength 272 of lower magnetic pole sheet 27b is that ring is located at coil holder 22 all sides, therefore, 272 of each magnetic pole strengths of this lower magnetic pole sheet 27b promptly form bigger short slot 273, are drawn for the exit 222 of coil holder 22 by this short slot 273.Therefore, the stator 2 of present embodiment has the magnetic pole strength of big induction area and responds to mutually with the permanent magnet 12 of rotor 1, and ring is located at the short slot 273 of 272 of magnetic pole strengths of the lower magnetic pole sheet 27b of coil holder 22 all sides, can form bigger short slot 273 is drawn easily for the exit 222 of enamelled wire 221, make the work of drawing of this enamelled wire 221 become convenient, and can avoid its insulating barrier by scratch.Moreover, length, height or the thickness of the first side 274 of pole piece 27 set each magnetic pole strength 272 of present embodiment also can be greater than length, height or the thickness of second side 275, therefore, this pole piece 27 promptly can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
See also shown in Figure 11ly, it is stator 3 second embodiment of the present invention, includes two pole pieces 31 and coil holder 32.Pole piece 31 is two ends that are placed in coil holder 32 respectively, according to drawing, pole piece above coil holder 32 is hereinafter referred to as upper pole piece 31a, pole piece below coil holder 32 is hereinafter referred to as lower magnetic pole sheet 31b, has magnetic conductive tube 311 (the drawing illustrated embodiment is upper pole piece 31a) by one pole piece 31, this magnetic conductive tube 311 can pass through the centre bore of wiring ring support 32 and another pole piece 31, can rotation axis 11 rotations (figure do not draw) of ccontaining bearing in order to support rotor 1 in the magnetic conductive tube 311.Because these pole piece 31 peripheries have magnetic pole strength, this magnetic pole strength includes magnetic pole strength 312, lower magnetic pole face 313, therefore, this pole piece 31 promptly has bigger magnetic pole strength and can respond to the permanent magnet 12 of rotor 1, this upper pole piece 31a respectively becomes isogonism to distribute according to pole piece 31 centers with the magnetic pole strength of lower magnetic pole sheet 31b, and, this upper pole piece 31a is into alternative ring with the magnetic pole strength of lower magnetic pole sheet 31b and is located at coil holder 32 all sides, moreover, lower magnetic pole face 313 at this upper pole piece 31a is established short slot 314, is drawn for the exit 322 of coil holder 32 set enamelled wires 321 by this short slot 314.Coil holder 32 is wound with enamelled wire 321, and this enamelled wire 321 has exit 322 can do the connection of power supply.
In addition, in the middle of present embodiment, the short slot 314 of this pole piece 31 also can form by foregoing the whole bag of tricks, as Fig. 7, Fig. 8, Fig. 9, shown in Figure 10, also can directly form magnetic conductive tube 21, and pass through wiring ring support 22 by this magnetic conductive tube 21 by upper pole piece 24a, 25a, 26a, 27a or lower magnetic pole sheet 24b, 25b, 26b, the 27b of these previous embodiment.Moreover, in the middle of present embodiment, length, height or the thickness of the last magnetic pole strength 312 of this pole piece 31, the first side 315 of lower magnetic pole face 313 also can be greater than length, height or the thickness of second side 316, therefore, this pole piece 31 promptly can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
See also shown in Figure 12, it is stator 4 the 3rd embodiment of the present invention, include two pole pieces 41 and coil holder 42, pole piece 41 is placed in two ends of coil holder 42 respectively, according to drawing, pole piece above coil holder 42 is hereinafter referred to as upper pole piece 41a, and the pole piece below coil holder 42 is hereinafter referred to as lower magnetic pole sheet 41b.This two pole piece 41 respectively has magnetic conductive tube 411, passes through wiring ring support 42 and butt mutually jointly by the magnetic conductive tube 411 of this two pole piece 41, can rotation axis 11 rotations (figure do not draw) of ccontaining bearing in order to support rotor 1 in the magnetic conductive tube 411.These pole piece 41 peripheries have magnetic pole strength, this magnetic pole strength includes magnetic pole strength 412, lower magnetic pole face 413, therefore, this pole piece 41 promptly has bigger magnetic pole strength and can respond to the permanent magnet 12 of rotor 1, again, this upper pole piece 41a respectively becomes isogonism to distribute according to pole piece 41 centers with the magnetic pole strength of lower magnetic pole sheet 41b, and this upper pole piece 41a is into alternative ring with the magnetic pole strength of lower magnetic pole sheet 41b and is located at coil holder 42 all sides.Moreover, establish short slot 414 at the lower magnetic pole face 413 of this upper pole piece 41a, draw for the exit 422 of coil holder 42 set enamelled wires 421 by this short slot 414.Coil holder 42 is wound with enamelled wire 421, and this enamelled wire 421 has exit 422 can do the connection of power supply.
In addition, in the middle of present embodiment, the short slot 414 of this pole piece 41 also can form by foregoing the whole bag of tricks, as Fig. 7, Fig. 8, Fig. 9, shown in Figure 10, also can respectively extend magnetic conductive tube 21 and pass through wiring ring support 22 and mutual butt jointly by upper pole piece 24a, 25a, 26a, 27a and lower magnetic pole sheet 24b, 25b, 26b, the 27b of those previous embodiment.And, in the middle of present embodiment, length, height or the thickness of the last magnetic pole strength 412 of this pole piece 41, the first side 415 of lower magnetic pole face 413 also can be greater than length, height or the thickness of second side 416, therefore, this pole piece 41 promptly can produce uneven magnetic force, the permanent magnet 12 flashy power of rotor 1 can be provided, make rotor 1 be easy to start.
The dc brushless motor of radial air gap of the present invention, have be easy to process, the advantage of ease of assembly, and have and respond to mutually with the permanent magnet of rotor, with the outputting torsion of increase motor greater than the magnetic pole strength of the existing set induction area of stator magnet pole piece; Especially, this stator is behind the joint line ring support, and its magnetic pole strength also is formed with each other greater than having now around the formed short slot of the pole piece of coil holder, therefore, the exit of the set enamelled wire of coil holder also can be easy to be drawn, and has difficult being scraped to undermine the destruction Insulation Problems.
Claims (19)
1, a kind of dc brushless motor of radial air gap, it is characterized in that: it comprises: rotor has a rotation axis and annular permanent magnnet; Stator is rotated by the rotation axis for rotor in the magnetic conductive tube, magnetic conductive tube outer wall joint line ring support, and these coil holder two ends have upper and lower pole piece respectively; The periphery of this upper and lower pole piece respectively has to this pole piece upper and lower to the upper and lower magnetic pole strength that extends, this magnetic pole strength is responded to mutually with the permanent magnet of rotor, and the magnetic pole strength of upper and lower pole piece is mutually and is crisscross arranged, being centered around the lower magnetic pole face of upper pole piece of coil holder or the last magnetic pole strength of lower magnetic pole sheet, is to have short slot to draw for the exit of the set enamelled wire of coil holder.
2, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: its stator is to pass through the wiring ring support and at the pole piece of these coil holder two ends by a magnetic conductive tube.
3, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: its magnetic conductive tube is to be formed directly into the one pole piece.
4, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: its magnetic conductive tube is to be respectively formed at this two pole piece, passes through the wiring ring support jointly by the magnetic conductive tube on this two pole piece, and the mutual butt of this two magnetic conductive tube.
5, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: its short slot is to be arranged with by last magnetic pole strength of each pole piece itself or lower magnetic pole face to form.
6, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: the last magnetic pole strength and the lower magnetic pole face of its each pole piece itself are to be mutually the setting of staggering, and make two pole piece corrals form short slot at the magnetic pole strength of coil holder.
7, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: last magnetic pole strength of its each pole piece itself and lower magnetic pole face are to form width inequality, make two pole piece corrals form short slot at the magnetic pole strength of coil holder by its stand out.
8, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: the last magnetic pole strength of its pole piece and lower magnetic pole face are the upper and lower ends that is located at pole piece respectively, and are positioned at and are mutually the opposite position that staggers.
9, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that:
The first side length of the set magnetic pole strength of its each pole piece is greater than second side length.
10, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: the first side length of the set magnetic pole strength of its each pole piece is greater than second side length.
11, the dc brushless motor of radial air gap as claimed in claim 1 is characterized in that: the first side height of the set magnetic pole strength of its each pole piece is greater than the second side height.
12, a kind of dc brushless motor of radial air gap, it is characterized in that: it comprises: rotor has a rotation axis and annular permanent magnnet; Stator, rotate by the rotation axis for rotor in the magnetic conductive tube, magnetic conductive tube outer wall joint line ring support, these coil holder two ends have upper and lower pole piece respectively, the periphery of this upper and lower pole piece has last magnetic pole strength and the lower magnetic pole face that extends to form to equidirectional, this magnetic pole strength is responded to mutually with the permanent magnet of rotor, and the magnetic pole strength of upper and lower pole piece is mutually and is crisscross arranged, by the magnetic pole strength of one pole piece be centered around coil holder around, and the magnetic pole strength by this pole piece forms short slot each other, draws for the exit of the set enamelled wire of coil holder.
13, the dc brushless motor of radial air gap as claimed in claim 12 is characterized in that: its stator passes through the wiring ring support by a magnetic conductive tube and forms at the pole piece of these coil holder two ends.
14, the dc brushless motor of radial air gap as claimed in claim 12 is characterized in that: its magnetic conductive tube is to be formed directly into the one pole piece.
15, the dc brushless motor of radial air gap as claimed in claim 12 is characterized in that: its magnetic conductive tube is to be respectively formed at this two pole piece, passes through the wiring ring support jointly by the magnetic conductive tube on this two pole piece, and the mutual butt of this two magnetic conductive tube.
16, as the dc brushless motor of claim 12 described radial air gaps, it is characterized in that: its short slot is to form between magnetic pole strength by each pole piece itself.
17, the dc brushless motor of radial air gap as claimed in claim 12 is characterized in that: the first side length of the set magnetic pole strength of its each pole piece is greater than second side length.
18, the dc brushless motor of radial air gap as claimed in claim 12 is characterized in that: the first side thickness of the set magnetic pole strength of its each pole piece is greater than the second routine limit thickness.
19, the dc brushless motor of radial air gap as claimed in claim 12 is characterized in that: the first side height of the set magnetic pole strength of its each pole piece is greater than the second side height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01104300 CN1202610C (en) | 2001-03-22 | 2001-03-22 | Brushless DC motor with radial air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01104300 CN1202610C (en) | 2001-03-22 | 2001-03-22 | Brushless DC motor with radial air gap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1377122A true CN1377122A (en) | 2002-10-30 |
| CN1202610C CN1202610C (en) | 2005-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01104300 Expired - Fee Related CN1202610C (en) | 2001-03-22 | 2001-03-22 | Brushless DC motor with radial air gap |
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| CN (1) | CN1202610C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1870983A3 (en) * | 2006-06-23 | 2009-04-29 | Diego Troisi | Single-phase permanent magnet electrical motor |
-
2001
- 2001-03-22 CN CN 01104300 patent/CN1202610C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1870983A3 (en) * | 2006-06-23 | 2009-04-29 | Diego Troisi | Single-phase permanent magnet electrical motor |
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| Publication number | Publication date |
|---|---|
| CN1202610C (en) | 2005-05-18 |
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