TWI255604B - Rotor and stator structure of motor - Google Patents

Abstract

An improved rotor and stator structure of a motor is provided. The rotor structure includes a rotation axis and a magnet encircling said rotation axis. The magnet is magnetized radially or axially. The stator structure includes a sleeve, a first ring positioned on one opening of the sleeve, and a second ring positioned on the other opening of the sleeve. N pieces of first salients and N pieces of second salients are spacedly and coplanarly extended from the first ring and the second ring respectively, and the position of each piece of the first salients corresponds to that of each piece of the second salients.

Description

1255604

TECHNICAL FIELD This invention relates to a stator and rotor structure of a stator and rotor junction DC motor of a motor. A brushless DC motor of the prior art, in which the stator system is composed of a plurality of magnetic poles, and a central portion of the outer casing has a hole, wherein each magnetic pole of the stator is formed in a T shape, and each A magnetic coil is wound around a magnetic pole; a stator and a wound coil fabricated in this manner are relatively expensive. Please refer to U.S. Patent No. 4,987,331, the disclosure of which is incorporated herein incorporated herein incorporated by incorporated herein incorporated by incorporated herein by incorporated herein by incorporated by incorporated herein by reference a pair of magnetic pole plates and a circuit board connected to one side of the base body, wherein each of the magnetic pole plates constitutes a pair of magnetic poles fixed on two sides of the substrate, and the two sets of magnetic pole plates are offset from each other by a magnetic pole position; The staggered-magnetic pole stator structure is such that the corresponding rotor magnet must be a ring that is radially magnetized and magnetically coupled to N and S. The improved motor structure is quite different from the conventional technology, and the included rotor is a radially magnetized magnetic strip having N, S magnetic properties spaced apart from each other. And a coil of the coil and the set of magnetic plates that are magnetically coupled to a metal sleeve

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5. The invention description (4) extends from the second ring in a coplanar manner; wherein the position of each of the first portions corresponds to the position of each of the second protrusions, and An integer of 1 in person. According to the above concept, the sleeve is composed of a magnetically permeable material. According to the above concept, the first convex portion and the second convex portion are eccentric in the same direction. According to the above concept, the first and the first convex portions form an upper magnetic plate, the second ring and the second convex portion form a lower magnetic plate, and the upper magnetic plate and the lower magnetic plate are both The layer of bismuth steel constitutes 'and M is a natural number.

According to the above concept, the stator structure is formed by a magnetically conductive material in a unitary manner. According to the above concept, wherein the magnetic conductive material is tantalum steel. According to a secondary object of the present invention, a motor is provided, comprising: a rotor structure including a rotating shaft and a magnet, the magnet surrounding the rotating shaft, and the magnet can be divided into two parts perpendicular to a plane of the rotating shaft Each part includes 2N mutually corresponding magnetic regions, and each of the magnetic regions has a magnetic opposite to the adjacent magnetic regions, and the magnetic regions corresponding to each other in the vertical direction have opposite magnetic properties; a certain substructure includes a casing, a first ring, and a first

a second ring, the first ring and the second ring are respectively located in one opening and the other opening of the sleeve, and the first ring and the second ring also have N first convex portions and N second portions respectively a convex portion, the N first convex portions are spaced apart from each other and coplanarly extending from the first ring, and the N second convex portions are spaced apart from each other and coplanarly extend from the second ring, and each a position of the first convex portion corresponding to a position of each of the second convex portions; and a coil wound around the sleeve

Page 14 1255604 V. Inventive Note (5), wherein, when the coil is energized to give energy to the stator structure, each of the first protrusions has a second protrusion corresponding to each of the first protrusions The opposite magnetism causes the rotor structure to rotate about the axis of rotation, and N is an integer greater than one. According to the above concept, the sleeve is composed of a magnetically permeable material. According to the above concept, the first convex portion and the second convex portion are eccentric in the same direction. According to the above concept, the first ring and the first convex portion form an upper magnetic plate, the second ring and the first The two convex portions form a lower magnetic plate, and the upper magnetic plate and the lower magnetic plate are composed of a tantalum layer of tantalum steel, and the tantalum is a natural number. According to the above concept, the stator structure is formed by a magnetically conductive material in a unitary manner. According to the above concept, wherein the magnetic conductive material is tantalum steel. According to a secondary object of the present invention, a motor is provided, comprising: a rotor structure including a rotating shaft and a magnet, the magnet surrounding the rotating shaft, and the magnet comprises two adjacent axial magnetic regions, each of which One end of the axial magnetic region has a magnetic opposite to the other end, and one end of each of the axial magnetic regions has a magnetic opposite to a corresponding end of the adjacent magnetic region; a certain substructure includes a casing, a first And a second ring, the first ring and the second ring are respectively located at one of the opening and the other opening of the sleeve, and the first ring and the second ring respectively have a first convex portion And a second convex portion, the first convex portions are spaced apart from each other and coplanarly extending from the first ring, and the second second convex portions are spaced apart from each other and extend from the second ring in a coplanar manner Going out, and the position of each of the first protrusions corresponds to each of the second protrusions

Page 15 1255604 V. INSTRUCTIONS (7) Please refer to the first figure (b) 'which is the side view of the magnet 丨 5 of the first figure (a) where the magnet 15 is radially magnetized and the magnet 15 can be vertical A plane of the rotating shaft 分成 is divided into an upper magnetic strip 13 and a lower magnetic strip 12, and the upper magnetic strip 13 and the lower magnetic strip 12 each comprise eight corresponding magnetic regions, each magnetic region having a magnetic opposite to the adjacent magnetic region. And the magnetic regions corresponding to each other in the vertical direction have opposite magnetic properties; for example, as shown in the first diagram (b), the magnetic system of the magnetic domain 31 is opposite to the magnetic properties of the magnetic regions 132 and 121, that is, If the magnetic properties of the magnetic domain 131 are Ν 'the magnetic properties of the magnetic regions 132 and 121 are s. m=The first figure (C), which is the side view of the other type of magnet of the present invention, is axially magnetized, that is, in addition to the magnetic field magnetism of the first figure (b) πίΐ8; In the manner of the first figure (4), the magnetic flux of 1711 is transferred into the corresponding axial magnetic region, and the magnetic end of one end of the magnetic region 171 is opposite to the magnetic end of the magnetic region 1712, in particular, each of the properties. The end of one picture has a magnetic S opposite to the corresponding end of the adjacent magnetic zone, and the other end shows that the magnetic property of one end 1711 of the magnetic zone iπ is magnetic if it is magnetic, and if it is magnetic, it is Ν; likewise, the magnetic zone 171 Magnetic second of one end 1 722: a magnetic field 172 adjacent to the magnetic domain ΐn, if the magnet is shown, that is, has two magnetic charges, the magnetic domain distribution is as shown in the first figure (b) Then the magnetic zone distribution is as in the first spurs 12 and 13; if the magnet is axially magnetized, then 17. Figure (c), that is, only one magnetic strip, please refer to the second garden structure, the first Weiweixiang 3, which is an exploded view of the stator of the brushless DC motor of the present case, wherein the stator structure is composed of one 1255604 5, the invention description (8) magnetic plate 2, a sleeve 5, 9; first ring 23 and four first:: magnetic plate 4, magnetic plate 2 has - adjust the convex portion 21, Are the four first vests 91 separated and coplanar from the first ring? ° 1 series between each other Lu Lu, which extends every 23's. The upper magnetic plate 2 system is connected by a flute and is located on an opening 51; likewise, there is a first %43 and four second convex The portion 41 in which the four armature magnetic plates 4 are spaced apart from each other and is coplanar from the first-part one convex portion 41 is a special portion. Flow motor, the second of the 13⁄4 stator structure; 2 3 The one-way brushless in this case is in the same direction, and the details will be recognized later. The second convex portion 41 must be eccentric with respect to the material of the stator structure: the tube is constructed, and the stator structure can be made of a magnetically permeable material by a magnetically permeable material.枓 (for example: 矽 steel) is integrated into the second figure (b) is the position of the second figure (a), the position of the convex part 21 corresponds to the side view of each structure, each of the first, in order to improve the generated magnetic The moment table ^ is the position of the portion 41, and in particular, it can be stacked by a plurality of layers of steel. Both the seesaw 2 and the lower magnetic plate 4 need to be noted that the number of magnetic regions of the 13 or lower magnetic strip 12 is transmitted to the rabbit.

The number is twice, that is, the number of the second portion 21 or the second convex portion 4 is Ν, and the upper magnetic strip 13 or the lower magnetic stop 12 portion 21 or the second convex portion 4 is larger than the Μ integer. The number of magnetic regions of the lower magnetic strip 12 is 2 Ν, which is additionally 'for the axially magnetized magnet 17 , the number of the convex portions 21 or the second convex portions ο is twice the number of the magnetic regions 171, That is

1255604 V. DESCRIPTION OF THE INVENTION (9) --- If the number of the first convex portion 21 or the second convex portion 41 is N, the number of magnetic regions 171 is also 2N, where N is an integer greater than 1. Please refer to the third figure, which is an exploded view of the brushless DC motor of the present invention. For the convenience of description, the rotor structure is illustrated by a radially magnetized magnet 15 . The brushless DC motor in the third figure is composed of a rotor structure 丨, an upper magnetic plate 2, an insulating layer 3, a lower magnetic plate 4, a sleeve 5, a coil 6, a circuit board 7, and a stator base 8. The insulating layer 3 wound by the coil 6 may be made of plastic, and the insulating layer 3 also has an opening 31 for receiving the sleeve 5 therein to constitute a magnetic flux path required for the rotor structure to be rotated. Secondly, the upper magnetic plate 2 and the lower magnetic plate 4 also have openings 22 and 42 for the stator 8 to pass therethrough, and the upper magnetic plate 2 and the lower magnetic plate 4 are magnetically identical, that is, both.

The stator base 8 composed of a non-magnetic material comprises a base 81 and a cylinder 82, and the insulating layer 3 is sleeved on the first protrusion 21, the second protrusion 41, and the sleeve. The tube 5, with the separation coil 6 and the stator structure 8, is connected by a cylinder 82 from the center of the base and fixes the perforation of the circuit board 7, the opening 4, the sleeve 5 and the insulating layer 3, and the opening 2 2, Finally, the cylinder 82 accommodates the rotating shaft 11, and the circuit board 7 further includes an electronic circuit for detecting and controlling a magnetic field generated by the stator structure. The fourth figure is a top view of the magnet and the magnetic pole plate of the brushless DC motor of the present case, the air between the upper magnetic plate 2 and the upper magnetic strip 13 is a gas chamber, and the four magnetic first four convex portions 2 1 Both point to the magnetic strip 丨3 having the same magnetic properties. As described above, the four first convex portions 21 of the upper magnetic plate 2 and the four second convex portions of the lower magnetic plate 4 are as described above.

1255604

V. DESCRIPTION OF THE INVENTION (10) The portion 41 must be eccentric in the same direction, with the same - and the second convex portion 41 making the air gap non-uniform, and the j-deflected first convex portion 21 is said to start the one-way DC motor of the present case. The air gap under the parent stator is not correct, and the magnetic 炻ni nr in the different directions is operated by the post-^ plate. As shown in the fifth figure (a), the 帛4 part 21 and the second one are the younger brothers. And the fifth-figure portion 21 of the fifth figure (1) and the $:, biased ~ ask one direction. The IU and the second convex portion 4 1 are eccentric to the other _ convex J = 6 energization to give the stator structure metric, each of the first responsive to each of the corresponding second convex portions η If the first convex portion 21 of the upper magnetic plate 2 is energized s and the magnetic property becomes N, the second convex portion 41 of the lower magnetic plate 4 becomes magnetic and becomes the rotor structure 1 and is turned to the right due to the magnetic field. Moving to face the next magnetic field, the direction of the current of the coil 6 is changed, and the magnetic properties of the first convex portion 21 and the second convex portion are exchanged, that is, the magnetic enthalpy of the first convex portion η when the & The magnetism of the second convex portion 41 becomes Ν; #在转子结构1 "The success of the movement is shifted to the right, so that the rotor structure 1 continuously rotates around the rotation axis.叨 Figure 6 (a) & (b) is the schematic diagram of the axial magnetization of the brushless DC motor and the operation of the eccentric magnetic pole plates in different directions, as shown in Figure (a), first The convex portion 21 and the second convex portion 41 are eccentric to the same direction, and the first convex portion 21 and the second convex portion 41 of the sixth figure (b) are eccentric in one direction. It is also worth mentioning that the material of the rotor cover of the fifth figure (a) is %

IH Page 20 1255604 V. INSTRUCTIONS (11) Must be magnetically conductive material, and the fifth figure (b) may not be magnetically conductive (eg copper) · The material of the rotor cover is made, using axial charging Magnetic magnets can be used, and the technology can easily push the seventh figure (4) and the seventh figure (8) respectively: 1C usage. In Figure 7 (8), it refers to the single "two tr" strips 3 and the lower magnetic strips 12 (of course, in the magnetic sheet 4, the magnetic coils 6 are generated by the coils 6;: upper: plate 2, sleeve 5, and lower worth It is important to note that the first convex and collectively form a magnetic flux path. The curved shape is extended to form a plurality of extensions: 邛21〇:: The portion 41 can be further bent ^ ^ swelled by 210 and 410, as shown in the eighth figure and the The invariable way of the nine figure can also improve the magnetic moment performance of the stator structure. The technique proposed by Nian Er 2 is only a single-phase brushless DC motor. Of course, this case can also be extended to multi-phase crusting. As described above, the present invention has a more compact structure than the aforementioned I-known technology, and has a more compact body, and is particularly suitable for a low-rate motor (L〇ff profile MOTER) or a mini-motor (MINIATURE M0TER). The present invention is only intended to be a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the scope of the present invention is modified by those skilled in the art of the present invention. Not to be protected as intended by the scope of the patent application.

Page 21 1255604 Brief Description of the Drawings Brief Description of the Drawings The rotor structure of the brushless DC motor of the present invention is preferably a first embodiment (a): a side view of the magnet of the radial magnetization of the present invention; the magnet of the axial magnetization of the present case Side view of the stator structure of the brushless DC motor of the present invention. First perspective view (b) First figure (C) Second figure (a) Exploded view of the embodiment; b): side view of the stator structure of the second figure (a); _ third picture: the explosion diagram of the brushless DC motor in this case; the fourth picture: the top view of the magnet and the magnetic pole plate of the brushless DC motor of the present invention; Figure 5 (a) & (b): The radial magnetizing magnet of the brushless DC motor and the operation of the eccentric magnetic pole plate in different directions; Figure 6 (a) & (b): brushless in this case Schematic diagram of the magnetism of the magnetizing magnet of the DC motor and the eccentric magnetic pole plate in different directions; Figure 7 (a): sectional view of the motor in conjunction with Fig. 5(a) &(b); ): Match the motor profile of Figure 6 (a) &(b); Figure 8: The brushless DC motor of this case A side view of a second preferred embodiment of the substructure; and a ninth drawing: a side view of a third preferred embodiment of the stator structure of the brushless DC motor of the present invention. Page 22

Claims (1)

1255604 < . Case No. 93〗 08985_月月曰 Revision _ VI. Patent Application Range 1. A rotor structure comprising: an outer cover having a shaft and a side wall surrounded by and parallel to the a rotating shaft; and a magnet connected to the side wall and surrounding the rotating shaft, the magnet is radially magnetized; wherein 'the outer cover is composed of a magnetically conductive material' which can be divided into a plane perpendicular to the rotating shaft The two parts each include a plurality of mutually corresponding magnetic regions, and each of the magnetic regions has a magnetic opposite to the adjacent magnetic regions, and each portion of the magnetic magnet has a magnetic field number of 2 N. N is an integer greater than 1 'The magnetic regions corresponding to each other in the vertical direction have opposite magnetic properties. 2. A rotor structure comprising: an outer cover 'having a shaft and a side wall' that surrounds and is parallel to the shaft; and a magnet coupled to the side wall and surrounding the shaft, the magnet system Axial magnetization; wherein the outer cover is composed of a magnetically permeable material, the magnet includes a plurality of mutually corresponding axial magnetic regions ' and one end of each of the axial magnetic regions has a magnetic opposite to the other end, The number of axial magnetic regions is 2N, N is an integer greater than 1, and one end of each of the axial magnetic regions has a magnetic opposite to the corresponding end of the adjacent magnetic region. 3. A stator structure comprising: a sleeve; a first ring located in one of the openings of the sleeve, the first ring having N Page 24 The portions are spaced apart from each other and are coplanar from the first - sixth, the first convex portion of the patent application range, the N first convex portions are extended; and the second second ring is located at the other opening of the # tube a second second convex portion, the N second sand portions are spaced apart from each other and the second ring extends; the music/dry surface is self-contained, and the position of each of the first convex portions corresponds to At the position of each convex portion, and Na_ is greater than an integer of 1. μ — 4· The stator structure as described in claim 3 is composed of a magnetically permeable material. The present invention is the stator structure described in claim 3, wherein the second portion and the second projection are eccentric in the same direction. A stator structure according to claim 3, wherein the fourth protrusion and the first protrusion form an upper magnetic plate, the second ring and the second magnetic plate and the upper magnetic plate The lower magnetic plates are all W layers. The furnace becomes a natural number. Wherein the stator structure, wherein the stator structure is made of a magnetically conductive material in an integrally molded manner. 8 • The stator structure described in item 7 of the patent application is second steel. 9 · 'Motor' includes: ^ a rotor structure comprising a shaft and a magnet, the magnet enclosing the shaft, and the magnet can be divided into two parts perpendicular to a plane of the shaft - each part Including two mutually corresponding magnetic regions, and each of the magnetic regions has magnetic properties opposite to adjacent magnetic regions, and corresponds to each other in the vertical direction Page 25 55404 ^^ 93108985 VI. Application for Patent Scope The magnetic region has an opposite magnetic · a certain substructure, including a sleeve, a first ring, and a second ring, the first ring and the second ring are respectively located in one of the sleeves and the other An opening, wherein the first ring and the second ring also have N first convex portions and N second convex portions respectively, and the n first/convex portions are spaced apart from each other and extend coplanarly from the first ring The N second protrusions are spaced apart from each other and coplanarly extend from the second ring, and the position of each of the first protrusions corresponds to the position of each of the second protrusions and a coil. Wrapped around the sleeve; Wherein, when the coil structure is energized to give energy to the stator structure, each of the first convex portions has magnetic properties opposite to each corresponding second convex portion due to induction, so that the rotating structure surrounds the rotating shaft Rotate, and N is an integer greater than one. I 0 The motor of the ninth aspect of the patent application is a brushless DC motor. 'II. The motor of claim 9, wherein the sleeve is composed of a magnetically permeable material. , The motor according to claim 9, wherein the first convex portion and the convex portion are eccentric in the same direction. The motor of claim 9, wherein the first ring and the first protrusion form an upper magnetic plate, and the second ring and the second protrusion form a lower magnetic plate, and Both the upper magnetic plate and the lower magnetic plate are composed of a tantalum layer of tantalum steel, and the tantalum is a natural number. The motor of claim 9, wherein the stator structure is Page 26 Year Amendment 曰 丄--一·匕1 Case No.*Cai π_5 VI. Scope of Application Patent A magnetically conductive material is made by body molding. • As stated in item 4 of the patent application, the β 枓 枓 is a 矽 steel. Between the spear and the κ motor, wherein the magnetic material 枓16 · a motor includes: the rotating two structure 'including a rotating shaft and a magnet, the magnet surrounds the shaft: the two stones include two axes corresponding to each other To magnetic 1, each of the magnetic regions == has the opposite magnetic polarity to the other end, and each of the axial directions has a magnetic opposite to the corresponding end of the adjacent magnetic region; a certain substructure, sentence Include a casing, a knot ring, a flute, a shackle, and a second sill. The second loop is located in one of the sleeves and the other and the "the first" ring and the first The second ring also has a first convex portion, the first one, and the first convex portion V is spaced apart from each other and is coplanarly self-exposed from the ground to the front of the first convex portion. Interval and coplanar at each 1; go out, and = the position of the first convex portion corresponds to the position of 1U 4笫 a convex portion; and a coil wound around the sleeve; ^ where 'when the coil is energized And when the energy of the stator structure is given, the first convex portion of the mother has the second convex portion corresponding to each of the first convex portions The opposite magnetism causes the rotor structure to rotate about the axis of rotation, and N is an integer greater than 1. The motor of claim 16 is a brushless DC motor. 18. The motor of claim 16, wherein the sleeve is formed of a magnetically permeable material. - · *~------·]I2(S5^〇4 9310RQRR Month 1 Amendment VI, contending for the initial scope 1 9 · As described in the patent application section 16 and the second convex part is eccentric The motor of the same or in the direction of the motor of the first aspect of the invention, wherein the first convex portion ring and the first convex portion form an upper magnetic plate, the second ring and the motor The second convex portion forms a lower magnetic plate, and the upper magnetic plate and the lower magnetic plate are both composed of a tantalum layer of tantalum steel, and the tantalum is a natural number 21. The magnetically permeable material is made in an integrated manner. 2 2 · As claimed in the scope of claim 21, 5; the steel is made of the motor. The motor is described in the stator structure in which the magnetic material is filial Page 28