JP2011250559A - Dc motor with brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a DC motor with a brush which can shorten the time to wind a coil around an armature core and which can shorten the connection inspection time of the coil and electrodes.SOLUTION: A first coil is connected to a first electrode, then is wound around a first salient pole, then is wound around a fourth salient pole, then is connected to a second electrode, then is wound around a second salient pole, then is wound around a fifth salient pole, then is connected to a third electrode, then is wound around a third salient pole, then is wound around a sixth salient pole, and then is connected to the first electrode. Then, a second coil is connected to a seventh electrode, then is wound around a seventh salient pole, then is wound around a tenth salient pole, then is connected to an eight electrode, then is wound around an eighth salient pole, then is wound around an eleventh salient pole, then is connected to a ninth electrode, then is wound around a ninth salient pole, then is wound around a twelfth salient pole, and then is connected to the seventh electrode.

Description

  The present invention relates to a brushed DC motor.

  Conventionally, in a DC motor with a brush, a coil wound around an armature core is connected to a commutator, and current is supplied to the commutator via a brush to rotate the motor.

  Patent Document 1 discloses a motor with a three-phase brush, and discloses a configuration in which a coil is wound around a salient pole of an armature core.

JP 2009-183114 A

  In the invention described in Patent Document 1 described above, in a configuration having twelve salient poles and a commutator riser, the first winding is connected to the first riser and subsequently wound around the first salient pole. Then, it is wound around the fourth salient pole, then connected to the fifth riser (first step), the second winding is connected to the second riser, and subsequently to the second salient pole. Winding, then winding on the fifth salient pole, then connecting to the sixth riser (second step), connecting the third winding to the third riser, and subsequently the third salient Winding on the pole, subsequently winding on the third salient pole, then connecting to the seventh riser (third step), connecting the fourth winding to the seventh riser, then , And then connected to the eleventh riser (fourth step), the fifth winding connected to the eighth riser, and Wind around the 8th salient pole and continue Is wound around the eleventh salient pole, and then connected to the twelfth riser (fifth step), the sixth winding is connected to the ninth riser, and then wound around the ninth salient pole. Subsequently, the coil is wound around the twelfth salient pole and then connected to the first riser (sixth step).

  The motor with a three-phase brush described in Patent Document 1 has a problem that it takes six steps to wind a coil for 12 slots, which takes a lot of time.

  Further, in the invention described in Patent Document 1, windings are connected (connected) to 10 out of 12 risers, and the connection status of the riser and the windings is connected to these 10 risers. There is a problem that inspection is required, the number of inspection steps is large, and the inspection time is long.

  The present invention has been made to solve such a conventional problem, and it is possible to reduce the time for winding the coil around the armature core and reduce the connection inspection time between the coil and the electrode. An object is to provide a DC motor.

  In order to achieve the above object, the present invention provides an armature core having a plurality of salient poles, a coil wound around the salient poles, a commutator connected to the coils, and a current in sliding contact with the commutator. In a DC motor with a brush having a brush for supplying a magnet, a printed circuit board connected to the commutator and mounted with a varistor, and a permanent magnet arranged to face the salient pole, the permanent magnet has 8 poles, The armature core has twelve salient poles equally in the circumferential direction, a predetermined salient pole among the twelve salient poles is a first salient pole, and the first salient pole is adjacent to the right in the circumferential direction. The salient pole of the second salient pole is the second salient pole, the salient pole right next to the second salient pole in the circumferential direction is the third salient pole, and the salient pole right next to the third salient pole is the fourth salient pole. The salient pole right next to the fourth salient pole in the circumferential direction is the fifth salient pole, and the salient pole right next to the fifth salient pole in the circumferential direction is the sixth salient pole. The salient pole on the right in the circumferential direction of the sixth salient pole is the seventh salient pole, the salient pole on the right in the circumferential direction of the seventh salient pole is the eighth salient pole, and the eighth salient pole The salient pole on the right in the circumferential direction is the ninth salient pole, the salient pole on the right in the circumferential direction of the ninth salient pole is the tenth salient pole, and the salient pole on the right in the circumferential direction of the tenth salient pole. The salient pole is the eleventh salient pole, the salient pole right next to the eleventh salient pole in the circumferential direction is the twelfth salient pole, and the commutator has twelve commutator pieces equally in the circumferential direction. , Having electrodes electrically connected to each of the twelve commutator pieces, wherein a predetermined one of the twelve electrodes is a first electrode, and the first electrode is adjacent to the right in the circumferential direction. The second electrode is the second electrode, the right electrode in the circumferential direction of the second electrode is the third electrode, the right electrode in the circumferential direction of the third electrode is the fourth electrode, and the fourth electrode The electrode on the right in the circumferential direction of the electrode The electrode adjacent to the right in the circumferential direction of the fifth electrode is defined as the sixth electrode, the electrode adjacent to the right in the circumferential direction of the sixth electrode is defined as the seventh electrode, and the right in the circumferential direction of the seventh electrode. The adjacent electrode is the eighth electrode, the electrode on the right in the circumferential direction of the eighth electrode is the ninth electrode, the electrode on the right in the circumferential direction of the ninth electrode is the tenth electrode, and the The electrode on the right in the circumferential direction of the tenth electrode is the eleventh electrode, the riser on the right in the circumferential direction of the eleventh electrode is the twelfth electrode, and the first winding is connected to the first electrode. And then winding on the first salient pole, subsequently winding on the fourth salient pole, subsequently connecting to the second electrode, subsequently winding on the second salient pole, Winding around the fifth salient pole, subsequently connecting to the third electrode, subsequently winding around the third salient pole, then winding around the sixth salient pole, and then continuing to the first salient pole Electrode And the second winding is connected to the seventh electrode, subsequently wound around the seventh salient pole, subsequently wound around the tenth salient pole, and subsequently the eighth electrode. And then wound on the eighth salient pole, subsequently wound on the eleventh salient pole, subsequently connected to the ninth electrode, and subsequently wound on the ninth salient pole. Then, it is wound around the twelfth salient pole and then connected to the seventh electrode.

  The present invention is characterized in that the first winding and the second winding are performed simultaneously.

  In the invention, it is preferable that the first to twelfth electrodes are first to twelfth risers provided in each of the twelve commutator pieces.

  Further, according to the present invention, the printed circuit board has twelve arm portions radially projecting radially outward, and the first to twelfth electrodes are electrically connected to each of the twelve commutator pieces. The first to twelfth wiring patterns on the printed circuit board that are connected to reach each of the twelve arm portions.

  According to the present invention, the printed circuit board has twelve projecting electrodes that project radially outward in the radial direction, and the first to twelfth electrodes are electrically connected to the twelve commutator pieces, respectively. The first to twelfth protruding electrodes are connected to each other.

  ADVANTAGE OF THE INVENTION According to this invention, the DC motor with a brush which can shorten the test | inspection time for confirming the connection of a coil and an electrode while shortening the time to wind a coil around an armature core can be provided.

It is a disassembled perspective view which shows the structure of the armature of the DC motor with a brush which concerns on one embodiment of this invention. It is a sectional side view of the armature 10 shown in FIG. It is a top view of the armature core 11 shown in FIG. It is a figure which shows the insulator 13 shown in FIG. 1, (a) is a perspective view, (b) is a top view. FIG. 2 is a plan view of the printed circuit board 16 shown in FIG. 1, (a) is a diagram showing a lower surface in FIG. 1, and (b) is a diagram showing an upper surface in FIG. 1. It is a figure which shows the ring varistor 15 shown in FIG. 1, (a) is a top view which shows the lower surface in FIG. 1, (b) is VIB-VIB sectional drawing of (a). It is a figure explaining the procedure which winds a coil | winding to the salient pole 12 of the armature core 11 shown in FIG. It is a disassembled perspective view which shows the structure of the armature of the DC motor with a brush which concerns on the 2nd Embodiment of this invention. FIG. 9 is a plan view of the printed board 116 shown in FIG. 8, (a) is a view showing the lower surface in FIG. 8, and (b) is a view showing the upper surface in FIG. 8. It is a disassembled perspective view which shows the structure of the armature of the DC motor with a brush which concerns on the 3rd Embodiment of this invention. FIG. 11 is a plan view of the printed circuit board 216 shown in FIG. 10, (a) is a view showing the lower surface in FIG. 10, and (b) is a view showing the upper surface in FIG. 10.

  Hereinafter, a brushed DC motor according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a structure of an armature of a brushed DC motor according to an embodiment of the present invention.

  FIG. 2 is a side sectional view of the armature shown in FIG.

  As shown in FIGS. 1 and 2, the armature 10 of this embodiment covers an armature core 11 from above and below an insulator 13, and further has a cylindrical insulating resin 21 and a rectifier provided on the outer periphery thereof. It has the commutator 20 which consists of the piece 22, and has the ring varistor 15 and the printed circuit board 16, and these are penetrated by the shaft 14 which is a rotating shaft. In the case where the armature 10 is a rotor, a permanent magnet disposed facing the rotor, a brush for supplying an electric current from the outside, and a bearing for fixing the rotor are generally used. Since it is the same as the structure of a DC motor with a brush, description and figures are omitted. Further, the coil wound around the salient pole of the armature core 11 is not shown in FIGS. 1 and 2.

  FIG. 3 is a plan view of the armature core 11 shown in FIG.

  FIG. 4 is a view showing the insulator 13 shown in FIG. 1, (a) is a perspective view, and (b) is a plan view.

  The armature core 11 is formed by punching a silicon steel plate into a planar shape shown in FIG. In this embodiment, the armature core 11 has twelve salient poles 12. Each of the 12 salient poles 12 has arm portions 12a extending radially outward from the center. The shaft 14 is passed through the central hole of the armature core 11 and fixed at a predetermined position.

  As shown in FIGS. 1 and 2, one insulator 13 is provided on each of the upper side and the lower side of the armature core 11. FIG. 4 shows one insulator 13, but the other insulator 13 has the same shape.

  The insulator 13 is made of an insulator, for example, resin, and has an arm portion 13b that covers the arm portion 12a of the salient pole 12 from both sides and the upper surface. The arm portion 13b of the other insulator 13 covers the arm portion 12a of the salient pole 12 from both sides and the lower surface. By doing so, the arm portion 12 a of the salient pole 12 is completely covered by the arm portion 13 b of the upper and lower insulators 13.

  A pedestal portion 13a is provided at the center of the insulator 13, and a through hole 13c is provided at the center of the pedestal portion 13a.

  The commutator 20 includes twelve commutator pieces 22 corresponding to the salient poles 12 of the armature core 11, and each commutator piece 22 has a terminal 23 projecting radially outward and an axial direction. It has a riser 24 (electrode) protruding downward and a fixed piece 25 protruding radially inward, and rectifies the insulating resin 21 that is substantially cylindrical and resin-molded with a hole in the center. It is fixed by a fixing piece 25 of the child piece 22. The shaft 14 is passed through the center of the commutator 20, and the lower surface of the insulating resin 21 is abutted against and fixed to the upper surface of the pedestal portion 13a of the insulator 13 (see FIG. 2).

  The coil of the armature 10 begins to wind by winding the end of the magnet wire around a predetermined riser 24 (electrode) of the commutator 20, and the arm of the insulator 13 that covers the salient poles 12 of the armature core 11. Winding is performed a predetermined number of times from above the portion 13b and is wound around a predetermined riser 24 (electrode) to form a winding. This point will be described later with reference to FIG.

  5 is a plan view of the printed circuit board 16 shown in FIG. 1, (a) is a view showing the lower surface in FIG. 1, and (b) is a view showing the upper surface in FIG. 1.

  The printed circuit board 16 formed in an annular shape has a wiring pattern (print pattern) formed on both sides, and a predetermined one of twelve commutator pieces 22 is provided on one side (the side shown in FIG. 5B). The wiring patterns 201, 202 and 203 are formed in the circumferential direction to be short-circuited so that the commutator pieces have the same potential (predetermined segments of the commutator have the same potential), and the other surface (FIG. 5A). 12), 12 wiring patterns 191 extending radially so as to connect the electrode 15b (see FIG. 6) of the ring varistor 15 and the commutator piece 22 are formed.

  5A, twelve land portions 161 are provided on the outer side in the circumferential direction of the printed board 16, and twelve land portions 181 are provided on the inner side in the circumferential direction. The land portions 161 and the land portions 181 are respectively provided. Are electrically connected by a wiring pattern 191.

  Further, the printed circuit board 16 penetrates through the circuit board, and 12 through holes that electrically connect a predetermined wiring pattern among the wiring patterns 201, 202, and 203 on one surface and the wiring pattern 191 on the other surface. A hole 171 is provided. As shown in FIG. 5B, the through hole A, the through hole D, the through hole G, and the through hole J are connected by the wiring pattern 203, and the through hole B, the through hole E, the through hole H, and the through hole K are connected to each other. Are connected by the wiring pattern 202, and the through hole C, the through hole F, the through hole I, and the through hole L are connected by the wiring pattern 201.

  6A and 6B are views showing the ring varistor 15 shown in FIG. 1, wherein FIG. 6A is a plan view showing a lower surface in FIG. 1, and FIG. 6B is a sectional view taken along the line VIB-VIB in FIG.

  The ring varistor 15 has a varistor element 15a made of ceramic or the like formed in a ring shape, and has an electrode 15b only on one side thereof. Twelve electrodes 15b, which are the same number as the commutator pieces 22, are provided substantially evenly in the circumferential direction of the varistor element 15a.

  In the present embodiment, as shown in FIG. 1, the surface of the ring varistor 15 provided with the electrode 15b is the lower surface, and the other surface of the printed board 16 (the surface shown in FIG. 5A) is the lower surface. Each of the 12 electrodes 15b and each of the 12 outer lands 161 are aligned in the circumferential direction, and each is electrically connected by soldering over the thickness of the varistor element 15a. A ring varistor 15 is mounted on 16.

  Further, after winding the coil around the electric core 11, the printed board 16 on which the ring varistor 15 is mounted is passed through the shaft 14, and each of the twelve inner lands 181 of the printed board 16 and the radially outer side of the commutator 20 are passed. Each of the twelve terminals 23 projecting to each other is aligned in the circumferential direction, and each of them is electrically connected and fixed by soldering.

  FIG. 7 is a diagram illustrating a procedure for winding a winding around the salient pole 12 of the armature core 11 shown in FIG. 1.

  In the present invention, the stator permanent magnet has eight poles, the armature core has twelve salient poles uniformly in the circumferential direction, and a three-phase brushed DC formed by winding a coil around each of the twelve salient poles. Intended for motors.

  Here, for example, on the surface of the printed board 16 in FIG. 5A, the riser 24 (electrode) of the commutator piece 22 connected to the through hole A is referred to as a first riser (first electrode). The riser 24 connected to the hole B is called a second riser (second electrode), and the riser 24 connected to the through hole C is called a third riser (third electrode) and connected to the through hole D. The riser 24 is called a fourth riser (fourth electrode), the riser 24 connected to the through hole E is called a fifth riser (fifth electrode), and the riser 24 connected to the through hole F Is called the sixth riser (sixth electrode), the riser 24 connected to the through hole G is called the seventh riser (seventh electrode), and the riser 24 connected to the through hole H is the eighth riser. Called the riser (eighth electrode) The riser 24 connected to I is called a ninth riser (9th electrode), the riser 24 connected to the through hole J is called a 10th riser (tenth electrode), and is connected to the through hole K. The riser 24 is called an eleventh riser (eleventh electrode), and the riser 24 connected to the through hole L is called a twelfth riser (twelfth electrode).

  That is, twelve commutator pieces 22 are equally provided in the circumferential direction, each of the twelve commutator pieces 22 has a riser 24 (electrode), and predetermined commutation of the twelve commutator pieces 22 is performed. The riser of the child piece is the first riser, the riser adjacent to the right in the circumferential direction of the first riser is the second riser, the third riser in turn, and the last 12th riser is the twelfth riser. Located to the left of 1 riser.

  Further, for example, of the 12 salient poles 12 of the armature core 11, the salient pole 12 whose circumferential position substantially coincides with the first riser during assembly is called the first salient pole, and the second riser and the circumferential The salient pole 12 whose direction position substantially coincides is called the second salient pole, the salient pole 12 whose circumferential position substantially coincides with the third riser is called the third salient pole, and the fourth riser and circumferential position. Is called the fourth salient pole, the salient pole 12 whose circumferential position is substantially the same as the fifth riser is called the fifth salient pole, and the sixth riser and the circumferential position is almost the same. The salient pole 12 that coincides is called the sixth salient pole, the salient pole 12 whose circumferential position substantially coincides with the seventh riser is called the seventh salient pole, and the circumferential position substantially coincides with the eighth riser. The salient pole 12 is called the eighth salient pole, the salient pole 12 whose circumferential position substantially coincides with the ninth riser is called the ninth salient pole, The salient pole 12 whose circumferential position substantially coincides with that of the riser is referred to as the tenth salient pole, and the salient pole 12 whose circumferential position substantially coincides with the eleventh riser is referred to as the 11th salient pole. And the salient pole 12 whose circumferential positions substantially coincide with each other is referred to as a twelfth salient pole.

  As the windings, the first winding 31 and the second winding 32 are used, and the first winding 31 starts winding with its ends being first entangled with the first riser of the commutator 20. The first salient pole is wound a predetermined number of times, the fourth salient pole is wound a predetermined number of times, tied to the second riser, the second salient pole is wound a predetermined number of times, and the fifth salient pole is wound. Winding a predetermined number of times around the pole, entangled with the third riser, wound a predetermined number of times around the third salient pole, wound around the sixth salient pole a predetermined number of times, and tied around the first riser Finish winding and form a winding.

  The end of the second winding 32 is first wound around the seventh riser of the commutator 20, wound a predetermined number of times around the seventh salient pole, and a predetermined number of times relative to the tenth salient pole. Winding, entwining the eighth riser, winding the eighth salient pole a predetermined number of times, winding the eleventh salient pole a predetermined number of times, tying the ninth riser, Is wound a predetermined number of times, wound a predetermined number of times around the twelfth salient pole, and is wound around the seventh riser to form a winding.

  That is, a first winding is connected to the first riser, subsequently wound around the first salient pole, subsequently wound around the fourth salient pole, and subsequently connected to the second riser. And then wound on the second salient pole, subsequently wound on the fifth salient pole, subsequently connected to the third riser, subsequently wound on the third salient pole, Winding around the sixth salient pole, then connecting to the first riser, connecting the second winding to the seventh riser, then winding around the seventh salient pole, Winding around the tenth salient pole, subsequently connecting to the eighth riser, subsequently winding around the eighth salient pole, then winding around the eleventh salient pole, and then 9 is connected to the 9th riser, then wound around the ninth salient pole, subsequently wound around the 12th salient pole, and then connected to the seventh riser.

  First riser (riser for through hole A), fourth riser (riser for through hole D), seventh riser (riser for through hole G), and tenth riser (riser for through hole J) Is short-circuited by the wiring pattern 203.

  Second riser (through hole B riser), fifth riser (through hole E riser), eighth riser (through hole H riser), and eleventh riser (through hole K riser) Is short-circuited by the wiring pattern 202.

  Third riser (through hole C riser), sixth riser (through hole F riser), ninth riser (through hole I riser), and twelfth riser (through hole L riser) Is short-circuited by the wiring pattern 201.

  As described above, until the first, fourth, second, fifth, third, and sixth salient poles are wound up to six, the first step is performed, and the seventh, tenth, eighth, eleventh, The winding up to six windings of the ninth and twelfth salient poles is the second step, and the winding is completed in two steps.

  According to the present invention, since the winding process is reduced, the time can be shortened.

  According to the present invention, six out of twelve risers (fourth riser, fifth riser, sixth riser, tenth riser, eleventh riser, twelfth riser) Because it is not entangled, there is no need to inspect for connection confirmation. For this reason, the inspection time can be shortened.

  Further, in the embodiment of the present invention, it has been described that the second winding is performed after the first winding in the case of one nozzle of the winding machine. However, the protrusion wound by the first winding is described. Since the salient pole and electrode wound by the second winding are located on the opposite side of the shaft and the electrode, the pole and the electrode are arranged so that the nozzle of the winding machine faces the shaft. The first winding and the second winding may be performed simultaneously. In this case, since the winding is completed in one process, the time can be further reduced.

  The procedure for winding the winding around the salient pole 12 of the armature core 11 described with reference to FIG. 7 is not applicable only to the armature of the brushed DC motor shown in FIG. It can also be applied to armatures. Hereinafter, another example of the armature to which the present invention can be applied will be described.

  FIG. 8 is an exploded perspective view showing the structure of the armature of the brushed DC motor according to the second embodiment of the present invention.

  In addition, in the armature 100 of this embodiment, since the structure around the armature core 111 is the same as that of the armature core 11 shown in FIG. Further, the structure of the ring varistor 115 is also the same as that of the ring varistor 15 shown in FIG. 6, and therefore, the same reference numerals as those in FIG.

  As shown in FIG. 8, the armature 100 of this embodiment covers the armature core 111 from above and below the insulator 113, and further has a cylindrical insulating resin 121 and a commutator piece 122 provided on the outer periphery thereof. And a ring varistor 115 and a printed circuit board 116, which are configured to penetrate through a shaft 114 which is a rotating shaft. In the case where the armature 100 is a rotor, a permanent magnet disposed facing the rotor, a brush for supplying an electric current from the outside, and a bearing for fixing the rotor are generally used. Since it is the same as the structure of a DC motor with a brush, description and figures are omitted. Also, the coil wound around the salient pole of the armature core 111 is not shown in FIG.

  The commutator 120 includes twelve commutator pieces 122 corresponding to the salient poles 112 of the armature core 111, and each commutator piece 122 has a terminal 123 projecting radially outward and a radial direction. It has a fixed piece projecting inward (not shown because it is the same as the fixed piece 25 in FIG. 2), and it has a substantially cylindrical shape with a hole in the center and is resin-molded against the insulating resin 121 The fixed piece of the commutator piece 122 is fixed.

  9 is a plan view of the printed circuit board 116 shown in FIG. 8, (a) is a view showing the lower surface in FIG. 8, and (b) is a view showing the upper surface in FIG. 8.

  The printed circuit board 116 formed in an annular shape has a wiring pattern (print pattern) formed on both surfaces, and a predetermined one of twelve commutator pieces 122 is provided on one surface (the surface shown in FIG. 9B). Form a circumferential wiring pattern that short-circuits so that the commutator pieces have the same potential (predetermined segments of the commutator have the same potential), and on the other surface (the surface shown in FIG. 9A) Form 12 wiring patterns 1191 extending radially so as to connect the electrode 15 b of the ring varistor 115 and the commutator piece 122.

  Twelve land portions 1181 are provided in the circumferential direction inside the printed board 116 in the radial direction, and each wiring pattern 1191 is connected to each land portion 1181.

  The printed circuit board 116 has twelve arm portions 116a projecting radially outward in the radial direction, and each of the wiring patterns 1191 is formed up to the arm portion 116a.

  The connection structure between the wiring patterns 1201, 1202, and 1203 and the wiring pattern 1191 by the through holes 1171 of the printed board 116 is the same as the through holes 171 of the printed board 16 shown in FIG. Omitted.

  In the present embodiment, as shown in FIG. 8, the surface on which the electrode 15b of the ring varistor 115 is provided is the lower surface, and the other surface of the printed board 116 (the surface shown in FIG. 9A) is the lower surface. Each of the 12 electrodes 15b and each of the wiring patterns 1191 on the 12 arm portions 116a are aligned in the circumferential direction, and each is electrically connected by soldering over the thickness of the varistor element 15a. Then, the ring varistor 115 is mounted on the printed board 116.

  Also, each land portion 1181 of the printed board 116 on which the ring varistor 115 is mounted and each terminal 123 of the commutator 120 are soldered. The assembly of the ring varistor 115, commutator 120, and printed board 116 is passed through the shaft 114, and the lower surface of the insulating resin 121 is abutted against the upper surface of the pedestal 113a of the insulator 113 and fixed.

  A coil (not shown) of the armature 100 starts by winding an end of a magnet wire (not shown) around a predetermined arm portion 116a of the printed circuit board 116, and covers each salient pole 112 of the armature core 111. Winding is performed from above the arm portion 113 b of the insulator 113, and the winding is formed by being entangled with a predetermined wiring pattern 1191.

  The procedure for winding the winding around the salient pole 12 of the armature core 11 described with reference to FIG. 7 is also applicable to the armature 100 of the present embodiment.

  In the present invention, the stator permanent magnet has eight poles, the armature core has twelve salient poles uniformly in the circumferential direction, and a three-phase brushed DC formed by winding a coil around each of the twelve salient poles. Intended for motors.

  Here, twelve commutator pieces 122 are equally provided in the circumferential direction, and electrodes of twelve printed boards 116 (wirings on the arm portions 116a) that are electrically connected to the twelve commutator pieces 122, respectively. A predetermined electrode of the 12 electrodes as a first electrode, an electrode right next to the first electrode in the circumferential direction as a second electrode, and a third electrode in order, The last twelfth electrode is positioned as the twelfth electrode on the left side of the first electrode.

  Also, for example, of the 12 salient poles 12 of the armature core 111, the salient pole 12 whose circumferential position substantially coincides with the first electrode during assembly is called the first salient pole, and the second electrode The salient pole 12 whose circumferential position substantially matches the second salient pole is called a second salient pole, and the salient pole 12 whose circumferential position almost coincides with the third electrode is called a third salient pole. The salient pole 12 whose position substantially coincides is called the fourth salient pole, the salient pole 12 whose circumferential position substantially coincides with the fifth electrode is called the fifth salient pole, and the sixth electrode and circumferential position are the same. The salient pole 12 that is substantially coincident is called the sixth salient pole, the salient pole 12 that is substantially coincident with the seventh electrode in the circumferential direction is called the seventh salient pole, and the circumferential position is substantially coincident with the eighth electrode. The salient pole 12 is called the eighth salient pole, and the salient pole 12 whose circumferential position substantially coincides with the ninth electrode is called the ninth salient pole. The salient pole 12 whose position substantially coincides is called the tenth salient pole, the salient pole 12 whose circumferential position substantially coincides with the eleventh electrode is called the eleventh salient pole, and the circumferential position of the twelfth electrode is the same. The salient pole 12 that is substantially coincident is called the 12th salient pole.

  As the winding, the first winding 31 and the second winding 32 are used, and the first winding 31 starts winding with its end first tangled with the first electrode of the printed circuit board 116, The first salient pole is wound a predetermined number of times, the fourth salient pole is wound a predetermined number of times, the second electrode is wound, the second salient pole is wound a predetermined number of times, and the fifth salient pole is wound. Winding the electrode a predetermined number of times, winding it around the third electrode, winding it around the third salient pole a predetermined number of times, winding it around the sixth salient pole a predetermined number of times, and winding it around the first electrode Finish winding and form a winding.

  The end of the second winding 32 is first wound around the seventh electrode of the printed circuit board 116, wound a predetermined number of times around the seventh salient pole, and a predetermined number of times around the tenth salient pole. Winding, entwining the eighth electrode, winding the eighth salient pole a predetermined number of times, winding the eleventh salient pole a predetermined number of times, entwining the ninth electrode, Is wound a predetermined number of times, wound a predetermined number of times around the twelfth salient pole, and is wound around the seventh electrode to form a winding.

  That is, a first winding is connected to the first electrode, subsequently wound around the first salient pole, subsequently wound around the fourth salient pole, and subsequently connected to the second electrode. And then wound on the second salient pole, subsequently wound on the fifth salient pole, subsequently connected to the third electrode, subsequently wound on the third salient pole, Winding around the sixth salient pole, subsequently connecting to the first electrode, connecting the second winding to the seventh electrode, subsequently winding around the seventh salient pole, And then wound on the tenth salient pole, subsequently connected to the eighth electrode, subsequently wound on the eighth salient pole, subsequently wound on the eleventh salient pole, and then 9 and then wound around the ninth salient pole, followed by winding around the twelfth salient pole and subsequently connected to the seventh electrode.

  The first electrode, the fourth electrode, the seventh electrode, and the tenth electrode are short-circuited by the wiring pattern 1203.

  The second electrode, the fifth electrode, the eighth electrode, and the eleventh electrode are short-circuited by the wiring pattern 1202.

  The third electrode, the sixth electrode, the ninth electrode, and the twelfth electrode are short-circuited by the wiring pattern 1201.

  As described above, until the first, fourth, second, fifth, third, and sixth salient poles are wound up to six, the first step is performed, and the seventh, tenth, eighth, eleventh, The winding up to six windings of the ninth and twelfth salient poles is the second step, and the winding is completed in two steps.

  According to the present invention, since the winding process is reduced, the time can be shortened.

  According to the invention, six out of twelve electrodes (fourth electrode, fifth electrode, sixth electrode, tenth electrode, eleventh electrode, twelfth electrode) are wound. Because it is not entangled, there is no need to inspect for connection confirmation. For this reason, the inspection time can be shortened.

  Further, in the embodiment of the present invention, it has been described that the second winding is performed after the first winding in the case of one nozzle of the winding machine. However, the protrusion wound by the first winding is described. Since the salient pole and electrode wound by the second winding are located on the opposite side of the shaft and the electrode, the pole and the electrode are arranged so that the nozzle of the winding machine faces the shaft. The first winding and the second winding may be performed simultaneously. In this case, since the winding is completed in one process, the time can be further reduced.

  Hereinafter, still another example of the armature to which the present invention can be applied will be described.

  FIG. 10 is an exploded perspective view showing the structure of the armature of the brushed DC motor according to the third embodiment of the present invention.

  In the armature 200 of the present embodiment, the structure around the armature core 211 is the same as that of the armature core 11 shown in FIG. Since the structure of the ring varistor 215 is the same as that of the ring varistor 15 shown in FIG. 6, the detailed description will be omitted below using the same reference numerals as those in FIG.

  As shown in FIG. 10, the armature 200 of this embodiment covers the armature core 211 with an insulator 213 from above and below, and further has a cylindrical insulating resin 221 and a commutator piece 222 provided on the outer periphery thereof. And a ring varistor 215 and a printed circuit board 216, which are configured to penetrate through a shaft 214 which is a rotating shaft. When the armature 200 is a rotor, a permanent magnet disposed facing the rotor, a brush for supplying an electric current from the outside, and a bearing for fixing the rotor are generally used. Since it is the same as the structure of a DC motor with a brush, description and figures are omitted. Also, the coil wound around the salient pole of the armature core 211 is not shown in FIG.

  The commutator 220 includes twelve commutator pieces 222 corresponding to the salient poles 212 of the armature core 211, and each commutator piece 222 has a terminal 223 projecting radially outward and a radial direction. It has a fixing piece protruding inward (not shown because it is similar to the fixing piece 25 in FIG. 2), and has a substantially cylindrical shape with a hole in the center and is resin-molded against the insulating resin 221 The fixed piece of the commutator piece 222 is fixed.

  11 is a plan view of the printed circuit board 216 shown in FIG. 10, (a) is a view showing the lower surface in FIG. 10, and (b) is a view showing the upper surface in FIG. 10.

  The printed circuit board 216 formed in an annular shape has a wiring pattern (print pattern) formed on both sides, and a predetermined one of twelve commutator pieces 222 is provided on one side (the side shown in FIG. 11B). A circumferential wiring pattern is formed so that the commutator pieces have the same potential (so that predetermined segments of the commutator have the same potential), and the other surface (the surface shown in FIG. 11A) is formed. Form 12 wiring patterns 2191 extending radially so as to connect the electrode 15 b of the ring varistor 215 and the commutator piece 222.

  11A, twelve protruding electrodes 2161 are provided on the outer side in the circumferential direction of the printed board 216, and twelve land portions 2181 are provided on the inner side in the circumferential direction. The protruding electrodes 2161 and the land portions 2181 are respectively provided. Are electrically connected by a wiring pattern 2191. The protruding electrode 2161 protrudes outside the outer periphery of the printed board 216.

  The connection structure between the wiring patterns 2201, 2202, 2203 and the wiring pattern 2191 by the through holes 2171 of the printed board 216 is the same as the through holes 171 of the printed board 16 shown in FIG. Omitted.

  In the present embodiment, as shown in FIG. 10, the surface of the ring varistor 215 provided with the electrode 15b is the lower surface, and the other surface of the printed board 216 (the surface shown in FIG. 11A) is the lower surface. Each of the twelve electrodes 15b and each of the twelve protruding electrodes 2161 are aligned in the circumferential direction, and each is electrically connected by soldering over the thickness of the varistor element 15a. A ring varistor 215 is mounted on

  Also, each land portion 2181 of the printed circuit board 216 on which the ring varistor 215 is mounted is connected to each terminal 223 of the commutator 220 by soldering. The assembly of the ring varistor 215, commutator 220, and printed board 216 is passed through the shaft 214, and the lower surface of the insulating resin 221 is abutted against the upper surface of the pedestal 213a of the insulator 213 and fixed.

  The coil (not shown) of the armature 200 starts to wind by winding the end of a magnet wire (not shown) around a predetermined protruding electrode 2161 of the printed circuit board 216 and covers the respective salient poles 212 of the armature core 211. It winds from the upper part of the arm part 213b of the insulator 213, and is wound around a predetermined protruding electrode 2161 to form a winding.

  The procedure for winding a winding around the salient pole 12 of the armature core 11 described with reference to FIG. 7 can also be applied to the armature 200 of the present embodiment.

  In the present invention, the stator permanent magnet has eight poles, the armature core has twelve salient poles uniformly in the circumferential direction, and a three-phase brushed DC formed by winding a coil around each of the twelve salient poles. Intended for motors.

  Here, twelve commutator pieces 222 are provided evenly in the circumferential direction, and electrodes (projecting electrodes 2161) of the printed circuit board 216 that are electrically connected to the twelve commutator pieces 222 are provided. Among the electrodes, a predetermined electrode is a first electrode, an electrode adjacent to the right in the circumferential direction of the first electrode is a second electrode, a third electrode is sequentially formed, and a last twelfth electrode is a first electrode. 12 electrodes are located on the left side of the first electrode.

  For example, of the 12 salient poles 12 of the armature core 211, the salient pole 12 whose circumferential position substantially coincides with the first electrode during assembly is called the first salient pole, and the second electrode The salient pole 12 whose circumferential position substantially matches the second salient pole is called a second salient pole, and the salient pole 12 whose circumferential position almost coincides with the third electrode is called a third salient pole. The salient pole 12 whose position substantially coincides is called the fourth salient pole, the salient pole 12 whose circumferential position substantially coincides with the fifth electrode is called the fifth salient pole, and the sixth electrode and circumferential position are the same. The salient pole 12 that is substantially coincident is called the sixth salient pole, the salient pole 12 that is substantially coincident with the seventh electrode in the circumferential direction is called the seventh salient pole, and the circumferential position is substantially coincident with the eighth electrode. The salient pole 12 is called the eighth salient pole, and the salient pole 12 whose circumferential position substantially coincides with the ninth electrode is called the ninth salient pole. The salient pole 12 whose position substantially coincides is called the tenth salient pole, the salient pole 12 whose circumferential position substantially coincides with the eleventh electrode is called the eleventh salient pole, and the circumferential position of the twelfth electrode is the same. The salient pole 12 that is substantially coincident is called the 12th salient pole.

  As the windings, the first winding 31 and the second winding 32 are used. The first winding 31 starts winding with its end first tangled with the first electrode of the printed circuit board 216, The first salient pole is wound a predetermined number of times, the fourth salient pole is wound a predetermined number of times, the second electrode is wound, the second salient pole is wound a predetermined number of times, and the fifth salient pole is wound. Winding the electrode a predetermined number of times, winding it around the third electrode, winding it around the third salient pole a predetermined number of times, winding it around the sixth salient pole a predetermined number of times, and winding it around the first electrode Finish winding and form a winding.

  The end of the second winding 32 is first wound around the seventh electrode of the printed circuit board 216, wound a predetermined number of times around the seventh salient pole, and a predetermined number of times relative to the tenth salient pole. Winding, entwining the eighth electrode, winding the eighth salient pole a predetermined number of times, winding the eleventh salient pole a predetermined number of times, entwining the ninth electrode, Is wound a predetermined number of times, wound a predetermined number of times around the twelfth salient pole, and is wound around the seventh electrode to form a winding.

  That is, a first winding is connected to the first electrode, subsequently wound around the first salient pole, subsequently wound around the fourth salient pole, and subsequently connected to the second electrode. And then wound on the second salient pole, subsequently wound on the fifth salient pole, subsequently connected to the third electrode, subsequently wound on the third salient pole, Winding around the sixth salient pole, subsequently connecting to the first electrode, connecting the second winding to the seventh electrode, subsequently winding around the seventh salient pole, And then wound on the tenth salient pole, subsequently connected to the eighth electrode, subsequently wound on the eighth salient pole, subsequently wound on the eleventh salient pole, and then 9 and then wound around the ninth salient pole, followed by winding around the twelfth salient pole and subsequently connected to the seventh electrode.

  The first electrode, the fourth electrode, the seventh electrode, and the tenth electrode are short-circuited by the wiring pattern 2203.

  The second electrode, the fifth electrode, the eighth electrode, and the eleventh electrode are short-circuited by the wiring pattern 2202.

  The third electrode, the sixth electrode, the ninth electrode, and the twelfth electrode are short-circuited by the wiring pattern 2201.

  As described above, until the first, fourth, second, fifth, third, and sixth salient poles are wound up to six, the first step is performed, and the seventh, tenth, eighth, eleventh, The winding up to six windings of the ninth and twelfth salient poles is the second step, and the winding is completed in two steps.

  According to the present invention, since the winding process is reduced, the time can be shortened.

  According to the invention, six out of twelve electrodes (fourth electrode, fifth electrode, sixth electrode, tenth electrode, eleventh electrode, twelfth electrode) are wound. Because it is not entangled, there is no need to inspect for connection confirmation. For this reason, the inspection time can be shortened.

  Further, in the embodiment of the present invention, it has been described that the second winding is performed after the first winding in the case of one nozzle of the winding machine. However, the protrusion wound by the first winding is described. Since the salient pole and electrode wound by the second winding are located on the opposite side of the shaft and the electrode, the pole and the electrode are arranged so that the nozzle of the winding machine faces the shaft. The first winding and the second winding may be performed simultaneously. In this case, since the winding is completed in one process, the time can be further reduced.

  The preferred embodiments of the present invention have been described above. However, the embodiments are not limited to the above, and various modifications and combinations can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Armature 11 Armature core 12 Salient pole 12a Arm part 13 Insulator 13a Base part 13b Arm part 13c Through-hole 14 Shaft 15 Ring varistor 15a Varistor element 15b Electrode 16 Printed circuit board 20 Commutator 21 Insulating resin 22 Commutator piece 23 Terminal 24 Riser (electrode)
25 fixed pieces

Claims (5)

An armature core having a plurality of salient poles, a coil wound around the salient poles, a commutator connected to the coils, a brush slidably contacting the commutator and supplying a current, and connected to the commutator. In a DC motor with a brush having a printed circuit board on which a varistor is mounted and a permanent magnet arranged to face the salient pole,
The permanent magnet has 8 poles, and the armature core has 12 salient poles uniformly in the circumferential direction,
A predetermined salient pole among the 12 salient poles is defined as a first salient pole,
The salient pole adjacent to the right in the circumferential direction of the first salient pole is the second salient pole,
A salient pole adjacent to the right in the circumferential direction of the second salient pole is defined as a third salient pole.
The salient pole on the right in the circumferential direction of the third salient pole is the fourth salient pole,
The salient pole on the right side in the circumferential direction of the fourth salient pole is the fifth salient pole,
The salient pole adjacent to the right in the circumferential direction of the fifth salient pole is the sixth salient pole,
A salient pole adjacent to the right in the circumferential direction of the sixth salient pole is defined as a seventh salient pole,
The salient pole on the right in the circumferential direction of the seventh salient pole is the eighth salient pole,
The salient pole adjacent to the right in the circumferential direction of the eighth salient pole is the ninth salient pole,
The salient pole on the right in the circumferential direction of the ninth salient pole is the tenth salient pole,
The salient pole on the right in the circumferential direction of the tenth salient pole is the eleventh salient pole,
The salient pole right next to the eleventh salient pole in the circumferential direction is the twelfth salient pole,
The commutator has twelve commutator pieces equally in the circumferential direction,
An electrode electrically connected to each of the twelve commutator pieces;
A predetermined electrode of the 12 electrodes is a first electrode,
The electrode adjacent to the right in the circumferential direction of the first electrode is the second electrode,
The electrode adjacent to the right in the circumferential direction of the second electrode is the third electrode,
The electrode adjacent to the right in the circumferential direction of the third electrode is the fourth electrode,
The electrode on the right in the circumferential direction of the fourth electrode is the fifth electrode,
The electrode adjacent to the right in the circumferential direction of the fifth electrode is the sixth electrode,
The electrode on the right in the circumferential direction of the sixth electrode is the seventh electrode,
The electrode on the right in the circumferential direction of the seventh electrode is the eighth electrode,
The electrode on the right in the circumferential direction of the eighth electrode is the ninth electrode,
The electrode adjacent to the right in the circumferential direction of the ninth electrode is the tenth electrode,
The electrode on the right in the circumferential direction of the tenth electrode is the eleventh electrode,
The riser adjacent to the right in the circumferential direction of the eleventh electrode is the twelfth electrode,
Connecting a first winding to the first electrode, subsequently winding on the first salient pole, subsequently winding on the fourth salient pole, and subsequently connecting to the second electrode; Subsequently, it is wound around the second salient pole, subsequently wound around the fifth salient pole, subsequently connected to the third electrode, and subsequently wound around the third salient pole. Wound around a sixth salient pole and subsequently connected to the first electrode;
A second winding connected to the seventh electrode, followed by winding around the seventh salient pole, followed by winding around the tenth salient pole, and subsequently connecting to the eighth electrode; Subsequently, the coil is wound around the eighth salient pole, subsequently wound around the eleventh salient pole, subsequently connected to the ninth electrode, and subsequently wound around the ninth salient pole. Wound around a twelfth salient pole and subsequently connected to the seventh electrode;
A brushed DC motor characterized by the above.   2. The brushed DC motor according to claim 1, wherein the first winding and the second winding are performed simultaneously.   3. The brushed DC motor according to claim 1, wherein the first to twelfth electrodes are first to twelfth risers provided in each of the twelve commutator pieces. 4. The printed circuit board has twelve arms projecting radially outward in the radial direction;
The first to twelfth electrodes are electrically connected to each of the twelve commutator pieces and have first to twelfth wiring patterns on the printed circuit board reaching the twelve arm portions, respectively. The brushed DC motor according to claim 1, wherein the DC motor has a brush. The printed circuit board has twelve projecting electrodes projecting radially outward in the radial direction;
The said 1st thru | or 12th electrode is the said 1st thru | or 12th protrusion electrode electrically connected to each of the said 12 commutator pieces, The Claim 1 or 2 characterized by the above-mentioned. DC motor with brush.

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