JP2009011071A - Stator, and winding method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator and a winding method therefor, capable of laminating coils, connecting them in series, and relatively easily winding the coils. <P>SOLUTION: This stator includes a U phase winding 14a in which a head coil winding portion 16at for U phase which is inserted from the first slot and wound in an arbitral direction is formed and an adjacent coil winding portion 16as of which winding direction is inverted and which is wound in series is formed, a W phase winding 14c in which a head coil winding portion 16ct for W phase which is inserted from a second slot and wound in an inverted direction is formed and an adjacent coil winding portion 16cs of which winding direction is inverted and which is wound in series is formed, and a V phase winding 14b in which a head coil winding portion 16bt for V phase which is inserted from the third slot and wound in an arbitral direction is formed and an adjacent coil winding portion 16bs of which winding direction is inverted and which is wound in series is formed. The poles at edge portions in which the three-phase windings such as the U phase are inserted are set to be identical. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stator and a winding method thereof, and more specifically to a stator (stator) of a rotating electric machine such as an electric motor or a generator and a winding method of a coil thereof.

As a stator of a rotating electrical machine such as an electric motor or a generator and a winding method thereof, for example, a technique described in Patent Document 1 below can be cited. In the technique described in Patent Document 1, a circular body is prepared in which a plurality of coils that can be wound by stacking three adjacent teeth out of a group of teeth provided on the inner periphery of the stator core are provided. In addition, the stator is manufactured by dividing the iron core for each tooth and inserting the divided teeth from the outside of the circular body toward the coil, making it lightweight and improving the yield rate and space factor. A stator is proposed. Note that the coils that are overlapped (distributed) as described above are then connected in parallel (parallel connection).
Japanese Patent Laid-Open No. 2005-184887

  By the way, when the winding coil is cooled using a refrigerant such as oil in this type of stator, the temperature may differ depending on the position of the coil. In particular, when a refrigerant tank is disposed in the lower part of the stator, the temperature may be greatly different between the lower coil that is always in contact with the refrigerant and the coil at another part.

  As a result, the current flowing through the coil is biased, causing torque fluctuations and vibrations. The inconvenience described above can be solved by connecting the coils in series. However, if the coils are to be connected in series while being wound in layers, the winding becomes complicated.

  Accordingly, an object of the present invention is to eliminate the above-described problems, and to provide a stator and a winding method thereof in which coils are connected in series while being wound in layers, and are relatively easily wound. is there.

  In order to achieve the above object, in claim 1, a stator core having 6 × n (n: integer) teeth is provided with a three-phase structure including a first phase, a second phase, and a third phase. In a stator in which a winding is inserted into a slot between the teeth, the winding is concentrically wound a predetermined number of times over a first group of teeth inserted from an arbitrary first slot and having a predetermined number of teeth. The first coil winding portion for the first phase is formed, and the adjacent coil winding portion that is wound the predetermined number of times in series while the winding direction is reversed to the teeth group adjacent to the first teeth group. The first-phase winding forming at least one of the first-phase windings, inserted from the second slot of the fourth slot from the first slot, and concentrically over the second tooth group consisting of a predetermined number of teeth for the predetermined number of times Any The first coil winding portion for the third phase is formed by winding in a direction opposite to the direction, and the predetermined number of windings are performed in series while the winding direction is reversed to the teeth group adjacent to the second teeth group. A third tooth comprising a predetermined number of teeth inserted from the third slot of the third phase winding forming at least one adjacent coil winding portion to be rotated, the second slot from the first slot It is wound around a group of teeth adjacent to the third group of teeth while forming a leading coil winding part for the second phase by concentrically winding the group a predetermined number of times in the same direction as the arbitrary direction. The first-phase, second-phase, and third-phase windings are formed of a second-phase winding that forms at least one adjacent coil winding portion that is wound the predetermined number of times in series while reversing the direction. Make the polarity of the inserted end the same. Configured.

  According to claim 2, a three-phase winding comprising a first phase, a second phase, and a third phase is provided in a slot between the teeth on a stator core having 6 × n teeth (n: integer). In the stator inserted into the second coil, the first coil for the second phase is inserted from an arbitrary first slot and is wound a predetermined number of times concentrically over a first group of teeth including a predetermined number of teeth. The second portion that forms a winding portion and at least one adjacent coil winding portion that is wound a predetermined number of times in series while reversing a winding direction in a tooth group adjacent to the first tooth group. A winding of a phase, inserted from a second slot adjacent to the first slot, and concentrically wound around the second teeth group consisting of the predetermined number of teeth in the same direction as the arbitrary direction. Turned second A phase leading coil winding portion is formed, and at least one adjacent coil winding portion that is wound the predetermined number of times in series while reversing the winding direction in the tooth group adjacent to the second tooth group is formed. The first phase winding to be formed is inserted from a third slot adjacent to the second slot, and is concentrically across a predetermined number of third teeth groups in the same direction as the arbitrary direction. Adjacent coil winding wound to form a leading coil winding portion for the third phase and wound in series a predetermined number of times while reversing the winding direction to the tooth group adjacent to the third tooth group It comprises the third phase winding forming at least one turning portion, and the polarity of the end portion on the side where the first phase winding is inserted is different from that of the second phase and third phase windings. The polarity was reversed.

  In the stator according to claim 3, after forming a coil group in which the first coil winding portions of the first phase, the second phase, and the third phase are superposed one by one, the first phase, the second phase, At least one adjacent coil group in which the adjacent coil winding portions of the phase and the third phase are overlapped one by one is arranged.

  4. The stator winding method according to claim 1, wherein the coil is formed using a winding frame including a simulated tooth and a simulated slot imitating the teeth and the slot. 5. The number of simulated teeth on the winding frame is set to be greater than the predetermined number by the number of teeth.

  6. The stator core having 6 × n teeth (n: integer), and a three-phase winding composed of a first phase, a second phase, and a third phase, and a slot between the teeth. In the method of winding the stator inserted from the above, the first winding is inserted from an arbitrary first simulated slot using a simulated tooth and a reel having a simulated slot imitating the tooth and slot. A first phase leading coil winding portion is formed by concentrically winding the first simulated teeth group including a predetermined number of simulated teeth in an arbitrary direction a predetermined number of times, and the third winding is connected to the first winding. The first simulated slot is inserted from the second simulated slot of the fourth slot and is wound concentrically over the second simulated tooth group consisting of a predetermined number of simulated teeth in the direction opposite to the predetermined direction. For the third phase A head coil winding portion is formed so as to overlap the first phase leading coil winding portion, and the second winding is inserted from a third simulation slot that is a second slot from the first simulation slot. A third phase of the first coil for the second phase by concentrically winding the third simulated tooth group consisting of a predetermined number of teeth in the same direction as the predetermined direction. The leading coil winding step formed by overlapping the winding portion, and then the predetermined number of times is wound in series while the winding direction is reversed to the simulated teeth group adjacent to the first simulated teeth group. For the third phase, the adjacent coil winding portion for the first phase is formed and the predetermined number of times is wound in series while inverting the winding direction to the simulated teeth group adjacent to the second simulated teeth group. The adjacent coil winding part of the first A second phase formed by overlapping the adjacent coil winding portion for the phase and winding the predetermined number of times in series while reversing the winding direction to the simulated teeth group adjacent to the third simulated teeth group Adjacent coil winding step of repeating the step of overlapping and forming the adjacent coil winding portion for the third phase adjacent coil winding portion, and then the first phase, the second phase, the third phase The step of removing the winding from the winding frame and attaching it to the teeth of the stator, and the polarity of the end portion where the first phase, second phase and third phase windings are inserted in the leading coil winding step Are configured to be the same.

  According to claim 6, a three-phase winding composed of a first phase, a second phase, and a third phase is formed in a slot between the teeth on a stator core having 6 × n (n: integer) teeth. In the winding method of the stator inserted into the coil, a winding frame including a simulated tooth and a simulated slot imitating the teeth and the slot is used, and the second winding is used as an arbitrary first simulated slot of the winding frame. And a first coil winding portion for the second phase is formed by concentrically winding the first simulated teeth group including a predetermined number of simulated teeth a predetermined number of times in an arbitrary direction, and forming the first coil winding portion. A wire is inserted from a second simulated slot adjacent to the first simulated slot, and a second simulated tooth group consisting of a predetermined number of teeth is wound in the same direction as the predetermined direction. Lead coil winding for one phase Is superimposed on the leading coil winding portion for the second phase, and the third winding is inserted from a third simulated slot adjacent to the second simulated slot, so that a predetermined number of simulated teeth are obtained. A first coil winding portion for the first phase is formed by winding a third simulated teeth group consisting of the third phase in the same direction as the predetermined direction. And a second coil phase wound around the predetermined number of times in series while reversing the winding direction to the adjacent simulated teeth group adjacent to the first simulated teeth group. The adjacent coil winding for the first phase is formed by winding the predetermined number of times in series while inverting the winding direction to the simulated teeth group adjacent to the second simulated teeth group. Adjacent coil winding for the second phase Adjacent coil winding for the third phase formed by overlapping the winding portion and wound in series a predetermined number of times while reversing the winding direction to the simulated teeth group adjacent to the third simulated teeth group An adjacent coil winding step that repeats a step of overlapping and forming the portion on the adjacent coil winding portion for the first phase, and then winding the first phase, the second phase, and the third phase on the winding frame. And attaching to the teeth of the stator, and in the leading coil winding step, the polarity of the end on the side where the first phase winding is inserted is set to the second phase and third phase windings. The polarity is opposite to that of the above.

  In the stator winding method according to a seventh aspect of the present invention, the number of simulated teeth on the winding frame is set to be greater than the predetermined number than the number of teeth.

  In the eighth aspect, the stator is wound by the method according to any one of the fifth to seventh aspects.

  The stator according to claim 1 is inserted from an arbitrary first slot and is concentrically wound in an arbitrary direction over the first teeth group to form a first coil winding portion for the first phase. In addition, the first phase winding forming at least one adjacent coil winding portion wound around the first tooth group adjacent to the first tooth group, from the second slot of the fourth slot from the first slot It is inserted and concentrically wound around the second teeth group in a direction opposite to an arbitrary direction to form a leading coil winding part for the third phase, and in the teeth group adjacent to the second teeth group A third phase winding forming at least one adjacent coil winding portion wound in series, inserted from the third slot of the second slot from the first slot, and concentrically across the third teeth group In the same direction as any direction The second phase of the second phase forming at least one adjacent coil winding portion wound in series with the teeth group adjacent to the third teeth group while being rotated to form a leading coil winding portion for the second phase Since it is configured to have the same polarity of the ends where the first phase, second phase, and third phase windings are inserted, it can be wound relatively easily and the coil. Are wound in series and connected in series, for example, even if a temperature difference occurs depending on the position of the coil, there is no bias in the current flowing through the coil, and torque fluctuations and vibrations do not occur.

  In addition, when the first, second, and third windings form the adjacent coil winding portion, the winding direction is reversed from the leading coil winding portion, so that the current between the adjacent coils Does not flow in opposite directions, and magnetic flux is not canceled.

  Furthermore, the length of the connecting wire at the coil end can be minimized, so that the height of the coil end can be reduced and the height of the coil end can be reduced to reduce copper loss. It becomes possible to do.

  The stator according to claim 2 is inserted from an arbitrary first slot and is concentrically wound in an arbitrary direction over the first teeth group to form a leading coil winding portion for the second phase. And a second phase winding forming at least one adjacent coil winding portion wound in series around the first tooth group and the adjacent tooth group, from the second slot adjacent to the first slot. Inserted and concentrically wound over the second tooth group in the same direction as the arbitrary direction to form the first coil winding portion for the first phase, and to the tooth group adjacent to the second tooth group A first phase winding forming at least one adjacent coil winding portion wound in series, inserted from a third slot adjacent to the second slot, and concentrically over the third tooth group Wound in the same direction as From the third phase winding that forms the leading coil winding portion for the third phase and at least one adjacent coil winding portion wound in series on the tooth group adjacent to the third tooth group Since the polarity of the end portion on the side where the first phase winding is inserted is set to be opposite to that of the second phase and third phase windings, the same as described in claim 1 An effect can be obtained.

  In addition, when the first, second, and third windings form the adjacent coil winding portion, the winding direction is reversed from the leading coil winding portion, so that the current between the adjacent coils The same is true in that the magnetic fluxes do not flow in opposite directions, and therefore the magnetic flux is not canceled.

  In the stator according to claim 3, after forming a coil group in which the first coil winding portions of the first phase, the second phase, and the third phase are overlapped one by one, the first phase, the second phase, In addition to the above effects, each of the first phase, the second phase, and the third phase is configured so that at least one adjacent coil group in which the third-phase adjacent coil winding portions are overlapped one by one is arranged adjacently. Compared with the case where the coils are previously formed and then knitted and combined so as to be evenly arranged, the windings can be formed more easily.

  In the stator winding method according to claim 4, since the number of simulated teeth on the winding frame is set to be larger than the number of teeth by a predetermined number or more, the last coil is formed in addition to the above effect. Is even easier.

  In the stator winding method according to claim 5, a winding frame including a simulated tooth and a simulated slot is used, and the first winding is inserted from the first simulated slot to cover the first simulated teeth group. The first coil leading coil winding portion is formed concentrically in an arbitrary direction, and the third winding is inserted from the second simulated slot of the fourth slot from the first simulated slot. Concentrically winding over the second simulated teeth group in a direction opposite to the arbitrary direction, and forming the third phase leading coil winding part on top of the first phase leading coil winding part, The second winding is inserted from the third simulated slot that is the second slot from the first simulated slot, and is wound concentrically over the third simulated teeth group in the same direction as an arbitrary direction for the second phase. The first coil winding part of the 3rd phase to the first coil winding part A first coil winding step formed by winding together, and an adjacent coil winding portion for the first phase that is wound in series while inverting the winding direction to a simulated teeth group adjacent to the first simulated teeth group An adjacent coil winding portion for the third phase, which is formed and wound in series while the winding direction is reversed to the simulated tooth group adjacent to the second simulated tooth group, is adjacent to the first phase adjacent coil winding. An adjacent coil winding portion for the second phase formed by overlapping the winding portion and wound in series while the winding direction is reversed to the simulation tooth group adjacent to the third simulation tooth group is the third. Adjacent coil winding process for repeating the process of forming the adjacent coil winding part for phase, and removing the first phase, second phase, and third phase windings from the winding frame and attaching them to the teeth of the stator And in the leading coil winding process Since the polarities of the inserted end portions of the phase, second phase, and third phase windings are made the same, the same effect as described in claim 1 can be obtained, and by using the reel It can be wound more easily.

  In the stator winding method according to claim 6, a winding frame including a simulated tooth and a simulated slot is used, and the second winding is inserted from the first simulated slot to cover the first simulated teeth group. The second coil is wound concentrically in any direction to form a leading coil winding part for the second phase, and the first winding is inserted from the second simulated slot adjacent to the first simulated slot, The first-phase leading coil winding portion formed by winding the simulated teeth group in the same direction as the arbitrary direction is overlapped with the second-phase leading coil winding portion, and the third winding is further formed. A lead coil winding for a third phase, in which a wire is inserted from a third simulated slot adjacent to the second simulated slot, and the third simulated teeth group is concentrically wound in the same direction as an arbitrary direction Head coil formed by superimposing the part on the first coil winding part for the first phase And forming the adjacent coil winding part for the second phase that is wound in series while the winding direction is reversed to the simulated teeth group adjacent to the first simulated teeth group, and the second simulated An adjacent coil winding portion for the first phase, which is wound in series while inverting the winding direction, is overlapped with the adjacent coil winding portion for the second phase and is formed on the simulated teeth group adjacent to the teeth group. Further, the adjacent coil winding part for the third phase, which is wound in series while the winding direction is reversed, to the simulated tooth group adjacent to the third simulated tooth group, is the adjacent coil winding part for the first phase. The adjacent coil winding step that repeats the process of forming the first coil, the first phase, the second phase, and the third phase are removed from the winding frame and attached to the stator teeth. End portion on the side where the first phase winding is inserted in the process Since the polarities are opposite to those of the second phase and third phase windings, the same effects as described in claim 2 can be obtained, and winding can be performed more easily by using a reel. Can be lined.

  In the stator winding method according to claim 7, since the number of simulated teeth on the winding frame is set to be larger than the number of teeth by a predetermined number or more, the same effect as described in claim 4 is obtained. Obtainable.

  According to the eighth aspect of the present invention, since the stator is wound by the method according to any one of the fifth to seventh aspects, a stator having the same effect as described in the fifth to seventh aspects is obtained. be able to.

  The best mode for carrying out a stator and its winding method according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an explanatory view schematically showing a stator according to a first embodiment of the present invention.

  In FIG. 1, reference numeral 10 denotes a stator. The stator 10 is a stator of a rotating electric machine such as an electric motor or a generator, and is disposed on the outer periphery of a rotor 12 (shown by an imaginary line). More specifically, the stator 10 is a stator of a radial type brushless motor. The rotor 12 includes, for example, four pole pairs (the number of pole pairs p = 4), that is, eight permanent magnets.

  The stator 10 includes a core 10a having a circular cross section, and 24 teeth (saliency poles) 10b that are formed integrally with the core 10a and project radially inward at every electrical angle of 60 degrees. Similarly, 24 slots (gap) 10c are formed between the teeth 10b every 60 degrees of electrical angle. In the stator 10 shown in FIG. 1, the number of slots 10c is represented by 6 × n (= 24). n is an integer, which is the same value as the number of pole pairs p of the rotor 12.

  A three-phase winding 14 consisting of U, V, and W, that is, a U-phase winding 14a, a V-phase winding 14b, and a W-phase winding 14c is inserted into the slot 10c, and a predetermined number, specifically, three. 8 coils 16 are formed by being wound a predetermined number of times (for example, several tens of turns) over the teeth 10b. The stator 10 is formed by laminating thin plates manufactured from iron-based materials (or casting iron-based materials), and the winding 14 is formed by a thin electric wire (enameled wire).

  2 and 3 are also perspective views schematically showing the stator and the like according to the first embodiment of the present invention, and FIG. 2 is a perspective view schematically showing the coil 16 before being inserted into the slot 10c. FIG. 3 is a perspective view schematically showing a winding frame 20 used when the coil 14 is formed by winding the winding 14. In FIG. 1 and the like, the number of turns (number of turns) of the winding 14 is stopped at three for convenience of illustration.

  As shown in FIG. 3, the winding frame 20 includes a plate-like main body 20a, a simulated tooth 20b projected therefrom, and a simulated slot 20c formed between the simulated teeth 20b. As will be described later, the number of simulated teeth 20b and simulated slots 20c is larger than that of the stator 10 shown in FIG. 1, and the size or interval thereof is the same as that of the stator 10 shown in FIG.

  Note that the three simulated slots 20c on the start end side (left end side in the figure) are formed with a shallower depth than the remaining slots. This is because the three coils on the start end side do not have a coil 16 that goes down, and the length of the winding 14 is insufficient if the depth of the simulated slot 20c is the same. By configuring as shown in FIG. 3, the length of the winding 14 of the three coils 16 on the start end side can be made the same as that of the remaining coils 16.

  As schematically shown in FIG. 1 and the like, the stator 10 according to this embodiment includes a winding 14, that is, a U-phase winding 14a, a V-phase winding 14b, and a W-phase winding 14c. Each coil 16 is formed and completed. Hereinafter, the coil formed of the U-phase winding 14a is referred to as a U-phase coil 16a, the coil formed of the V-phase winding 14b is referred to as a V-phase coil 16b, and the coil formed of the W-phase winding 14c is referred to as a W-phase coil 16c. .

  FIG. 4 is a process diagram showing a winding method (manufacturing method) of the coil 16 of the stator 10 according to the first embodiment.

  The winding method shown in FIG. 4 is not limited to the winding direction of the winding 14 (or the coil 16), and is appropriate regardless of the direction in which the winding 14 is wound. Before describing the drawing, the winding direction of the winding 14 will be described. The winding direction is divided into a clockwise direction and a counterclockwise direction according to a winding direction when viewed from a predetermined direction (for example, the lead line side). At the same time, the winding is divided into an outer winding and an inner winding depending on whether or not the stator 10 is wound in the circumferential direction.

  In the above description, the “lead wire” means a wire on the positive / negative side of the winding, and is a wire drawn from the stator 10 for connection to an energization switching device such as an inverter. Here, the lead wire is arranged. One end side of the stator 10 is called “leading wire side”, and the other end side of the stator 10 where no lead wire is drawn out is called “crossover wire side”. Further, the outer winding means the circumferential direction of the stator 10, and the inner winding means the winding direction toward the center direction. Therefore, the winding direction is roughly divided into four ways.

  FIGS. 5 to 18 are explanatory views of a coil that is manufactured through the process shown in FIG. 4 and that is inserted into a slot of the stator while adopting one of four winding directions, of which FIG. 5 is clockwise. FIG. 6 is a side view of the stator viewed from the direction A corresponding to a developed view schematically showing the coil wound around the coil, and FIG. 6 is a view of the coil shown in FIG. 5 viewed from the axial direction of the stator. FIG. 7 is a winding pattern diagram on the connecting wire side when the coil shown in FIG. 5 is viewed from the axial direction of the stator.

  FIG. 8 is a developed view and a side view schematically showing a coil that is internally wound clockwise, and FIG. 9 is a winding on the lead wire side when the coil shown in FIG. 8 is viewed from the axial direction of the stator. Similarly, FIG. 10 is a winding pattern diagram on the crossover side when the coil shown in FIG. 8 is viewed from the axial direction of the stator.

  FIG. 11 is a view similar to FIG. 1 showing a state in which a coil having a winding wound counterclockwise is inserted into the slot, and FIG. 12 is a perspective view schematically showing the coil shown in FIG. 13 is a developed view and a side view schematically showing a coil that is wound in a counterclockwise direction, and FIG. 14 is a winding on the lead wire side when the coil shown in FIG. 13 is viewed from the axial direction of the stator. Similarly, FIG. 15 is a winding pattern diagram on the crossover side when the coil shown in FIG. 13 is viewed from the axial direction of the stator.

  FIG. 16 is a developed view and a side view schematically showing a coil that is internally wound counterclockwise, and FIG. 17 is a winding on the lead wire side when the coil shown in FIG. 16 is viewed from the axial direction of the stator. Similarly, FIG. 18 is a winding pattern diagram on the crossover side when the coil shown in FIG. 16 is viewed from the axial direction of the stator. The configuration of the first embodiment is applicable to all of the four winding directions shown in FIGS. The same applies to the second embodiment described later.

  Further, FIG. 19 is a development view of the coil 16 when the winding 14 is inserted into the simulated slot 20c of the winding frame 20 and is wound inward in the clockwise direction, explaining the process shown in FIG. It is an expanded view of the coil 16 when carrying out the internal winding in the anticlockwise direction explaining the process shown in FIG. FIGS. 19 and 20 are similar to FIGS. 8 and 16, respectively, except that they are not inserted into the slots 10 c of the stator 10 but into the simulated slots 20 c of the winding frame 20.

  In FIG. 1 and the like, for the U-phase winding 14a, V-phase winding 14b, and W-phase winding 14c, the power input side (positive electrode) is 14aa, 14ba, 14ca, and the opposite side (negative electrode), that is, In the Y connection (or Δ connection), the neutral point side is indicated by 14ac, 14bc, and 14cc. In FIG. 5 and the like, the negative electrode side is also shown by adding an underbar.

  Further, in the winding pattern diagram such as FIG. 6, the continuation of the three-phase windings 14a, 14b, and 14c composed of the U, V, and W phases is indicated by numbers from 001 to 048. As indicated by the arrows in the figure, the windings are wound so that the numbers are continuous.

  Referring to FIGS. 19 and 20, the description will be made along FIG. 4. First, in S10, the U-phase winding 14a (more specifically, the reel 20 having the simulated teeth 20b and the simulated slots 20c shown in FIG. 3 is used. 14aa) is inserted from the first simulated slot 20c1 and wound over the first simulated teeth group to form the U-phase leading coil winding portion 16at, and more specifically, the W-phase winding 14c (more specifically, 14ca) is inserted from the second simulated slot 20c2 which is the fourth slot from the first simulated slot and wound in the reverse direction over the second simulated teeth group, and the W-phase leading coil winding portion 16ct is made U The V-phase winding 14b (more specifically, 14ba) is formed so as to overlap the leading coil winding portion 16at for the phase, and the third simulated slot 2 is the second slot from the first simulated slot. Is inserted through c3 wound in the same direction over the third simulated teeth group superimposed top coil winding portion 16bt for the V-phase to the beginning coil winding part 16ct for W-phase formed. At this time, the polarities of the end portions into which the U-phase, V-phase, and W-phase windings 14a, 14b, and 14c are inserted are the same, in other words, 14aa, 14ba, and 14ca.

  Next, the process proceeds to S12, and in the stator 10 according to this embodiment, since the winding 14 is not connected in parallel but connected in series, the winding direction is reversed to the simulated teeth group adjacent to the first simulated teeth group. In addition to forming the adjacent coil winding portion 16as for U-phase that is wound in series while being wound in series, it is wound in series while inverting the winding direction in the simulated teeth group adjacent to the second simulated teeth group. The adjacent coil winding portion 16cs for W phase is formed so as to overlap the adjacent coil winding portion 16as for U phase, and the winding direction is reversed to the simulated tooth group adjacent to the third simulated tooth group. The process of forming the V-phase adjacent coil winding portion 16bs wound in series on the W-phase adjacent coil winding portion 16cs is repeated, more specifically, seven times.

  Next, in S14, the U-phase, V-phase, and W-phase windings 14a, 14b, and 14c are detached from the winding frame 20 and attached to the teeth 10b of the stator 10. That is, the winding 14 is removed from the winding frame 20, rounded into a ring shape as shown in FIG. 2, and inserted into the slot 10c of the stator 10 as shown in FIG.

  In the first embodiment, as described above, a stator core 10a including 6 × n (n: integer) teeth 10b is added to a U phase (first phase), a V phase (second phase), and a W phase (third phase). In the winding method of the stator 10 in which the three-phase windings 14a, 14b, and 14c are inserted from the slots 10c between the teeth 10b, the simulated teeth 20b and the simulated slots imitating the teeth 10b and the slots 10c The U-phase (first) winding 14a (more specifically, 14aa) is inserted from an arbitrary first simulated slot 20c1 and a predetermined number (three in the illustrated example) is used. ) And the first simulated teeth group consisting of the simulated teeth 20b concentrically and wound a predetermined number of times (three turns in the illustrated example) in any direction (counterclockwise in FIG. 19 and clockwise in FIG. 20) and U (first 1) Phase The leading coil winding portion 16at is formed and the W-phase (third) winding 14c (more specifically, 14ca) is inserted from the second simulated slot 20c2 which is the fourth slot from the first simulated slot. Then, the second simulated teeth group consisting of a predetermined number (three in the illustrated example) of simulated teeth 20b is concentrically arranged in a direction opposite to the predetermined direction (clockwise in FIG. 19 and counterclockwise in FIG. 20). And the first coil winding portion 16ct for the W (third) phase is overlapped with the first coil winding portion 16at for the U (first) phase, and the V phase (second ) A winding 14b (more specifically, 14ba) is inserted from the third simulated slot 20c3, which is the second slot from the first simulated slot, and a third number of teeth 20b including a predetermined number (three in the illustrated example) of teeth 20b. Mock teeth Winding the leading coil winding portion 16bt for the V (second) phase W in the same direction (counterclockwise in FIG. 19 and clockwise in FIG. 20) the predetermined number of times concentrically across the group (Third) A leading coil winding step (S10) formed to overlap with the leading coil winding portion 16ct for phase, and then the winding direction of the simulated teeth group adjacent to the first simulated teeth group. While being reversed (clockwise in FIG. 19 and counterclockwise in FIG. 20), the adjacent coil winding portion 16as for the U (first) phase wound in series is formed, and the second W (third) phase that is wound a predetermined number of times in series while the winding direction is reversed (counterclockwise in FIG. 19, etc., clockwise in FIG. 20) to the simulated teeth group adjacent to Adjacent coil winding portion 16cs for the U (first phase) Is formed so as to overlap the adjacent coil winding portion 16as, and the winding direction is reversed to the simulated teeth group adjacent to the third simulated teeth group (clockwise in FIG. 19 and counterclockwise in FIG. 20). And (b) forming a V (second) phase adjacent coil winding portion 16bs wound in series with the predetermined number of times on the W (third) phase adjacent coil winding portion 16cs. Repeat the adjacent coil winding step (S12), and then remove the windings 14a, 14b, 14c of the U (first) phase, V (second) phase, and W (third) phase from the winding frame 20. In addition to the step (S14) of attaching to the teeth 10b of the stator 10, the windings 14a and 14b of the U (first) phase, V (second) phase, and W (third) phase in the leading coil winding step. , 14c is inserted at the same polarity To, specifically positive, and as configured to power input line and more specifically.

  As described in step S12 of FIG. 4, the U-phase, V-phase, and W-phase windings 14a, 14b, and 14c are wound when the adjacent coil winding portions 16as, 16bs, and 16cs are formed. The parts 16at, 16bt, 16ct and the winding direction are reversed.

  Referring to FIG. 19, for example, in the U phase, the U phase winding 14a (14aa) is inserted from the first simulated slot 20c1 and wound counterclockwise to form the leading coil winding portion 16at. After that, it is reversed and wound clockwise to form the adjacent coil winding portion 16as. The same applies to the other phases.

  Further, as shown in FIG. 3, the number of the simulated teeth 20b (and the simulated slots 20c) in the reel 20 is based on the number of the teeth 10b (and the slots 10c) of the stator 10 to which the coils 16 formed thereby are attached. Also, a predetermined number, that is, the number of teeth and the number of slots forming one coil, three or more in the embodiment is formed. For example, since the number of teeth 10b and slots 10c of the stator 10 are both 24, the number of simulated teeth 20b and simulated teeth 20c of the reel 20 is 27. In the illustrated example, the number of the simulated teeth 20b is the same as the predetermined number, but may exceed the predetermined number.

  Thereby, the operation | work which forms the coil 16 with the coil | winding 14 becomes easy. That is, as shown in FIG. 19 and the like, three coils each consisting of a set of windings 14 (one set of three turns) are attached to one simulated tooth 20b while overlapping each other. As a result, in the teeth, the uppermost winding group (coil) is also second in the next tooth and third in the next tooth. Therefore, in the next tooth, the uppermost winding group (coil) is temporarily set. In the next teeth, it is necessary to remove the upper two winding sets (coils) once and to lie under them.

  However, if the number of simulated teeth 20b (simulated slots 20c) in the reel 20 is set to a predetermined number, that is, the number corresponding to the number of teeth 10b necessary for forming the coil 16, an extra time is required. The coil 16 can be formed without the need for the above.

  In the first embodiment, the stator 10 schematically shown in FIG. 1 and the like is manufactured through the steps shown in FIG.

  Specifically, a stator core 10a having 6 × n (n: integer) teeth 10b is provided with a three-phase winding 14a composed of a U (first) phase, a V (second) phase, and a W (third) phase. In the stator 10 in which 14b and 14c are inserted into the slot 10c between the teeth, a first of a predetermined number (three in the illustrated example) of teeth inserted from an arbitrary first slot (simulated slot 20c1). The first coil winding for the U (first) phase is wound concentrically a predetermined number of times (three turns in the illustrated example) in any direction (counterclockwise in FIG. 19 and clockwise in FIG. 20). And forming at least one adjacent coil winding portion 16as that is wound a predetermined number of times in series while reversing the winding direction of the tooth group adjacent to the first tooth group. Is 7) shape The U (first) phase winding 14a (more specifically 14aa) is inserted from the second slot (simulated slot 20c2) of the fourth slot from the first slot, and consists of a predetermined number of teeth. The first coil winding for the W (third) phase is wound concentrically over the second teeth group in the direction opposite to the predetermined direction (clockwise in FIG. 19 and counterclockwise in FIG. 20). At least one adjacent coil winding portion 16cs that is wound the predetermined number of times in series while the winding direction is reversed to the tooth group adjacent to the second tooth group is formed (more specifically, the winding portion 16ct is formed). 7) the W (third) phase winding 14c (more specifically 14ca) to be formed, inserted from the third slot (simulated slot 20c3) of the second slot from the first slot, Predetermined The V (second) phase is wound concentrically over the third group of teeth consisting of a number of teeth in the same direction as the arbitrary direction (counterclockwise in FIG. 19 and clockwise in FIG. 20). Forming a leading coil winding portion 16bt for use, and at least one adjacent coil winding portion 16bs wound in the predetermined number of times in series while reversing the winding direction in the tooth group adjacent to the third tooth group. And two (more specifically, seven) second-phase windings 14b (more specifically, 14ba), and the U (first) phase, V (second) phase, and W (third ) Phase windings 14a, 14b, and 14c are configured to have the same polarity at the inserted ends.

  Further, after forming a coil group in which the first coil winding portions 16at, 16bt, 16ct of the U (first) phase, V (second) phase, and W (third) phase are superposed one by one, the U At least one adjacent coil group in which adjacent coil winding portions 16as, 16bs, 16cs of the (first) phase, V (second) phase, and W (third) phase are superposed one by one (more specifically, 7) It was configured to be adjacent.

  Further, in the winding method of the stator 10 in which the coil 16 is formed by using the winding frame 20 provided with the simulated teeth 20b and the simulated slots 20c imitating the teeth 10b and the slots 10c, the simulated teeth 20b of the winding frame 20 are used. Is configured to be larger than the number of stator cores 10b by the predetermined number (more specifically, three) or more.

  Since the stator 10 and the winding method thereof according to the first embodiment are configured as described above, the stator 10 can be wound relatively easily, and the coil 16 is overlapped and connected in series. Even if there is a temperature difference depending on the position, the current flowing through the coil 16 is not biased, and torque fluctuations and vibrations do not occur.

  Further, when the U-phase (first), V-phase (second), and W-phase (third) windings 14a, 14b, and 14c form the adjacent coil winding portions 16as, 16bs, and 16cs, the leading coil winding Since the winding direction is reversed from the portions 16at, 16bt, and 16ct, the current does not flow in the opposite direction between the adjacent coils 16, and the magnetic flux is not canceled.

  Furthermore, the length of the connecting wire at the coil end can be minimized, so that the height of the coil end can be reduced and the height of the coil end can be reduced to reduce copper loss. It becomes possible to do.

  Further, after forming a coil group in which the leading coil winding portions 16at, 16bt, and 16ct of the U (first) phase, the V (second) phase, and the W (third) phase are overlapped one by one, the U (first) 1) Since the adjacent coil group in which the adjacent coil winding portions 16as, 16bs, 16cs of the phase, V (second) phase, and W (third) phase are superposed one by one is arranged adjacently, In addition to the above effects, compared to the case where the U (first) phase, V (second) phase, and W (third) phase coils 16 are knitted and combined so that they are evenly arranged after being formed in advance. Thus, the winding can be easily formed.

  Further, since the number of the simulated teeth 20b of the winding frame 20 is configured to be greater than the number of the teeth 10b of the stator core 10a by a predetermined number (three) or more, in addition to the above effects, the last coil 16 is formed. It is easier to do.

  FIG. 21 is a process diagram showing a winding method (manufacturing method) of the coil 16 of the stator 10 according to the second embodiment of the present invention.

  Also in the second embodiment, the winding direction is roughly divided into four ways. FIGS. 22 to 33 are explanatory views of coils that are manufactured through the steps shown in FIG. 21 and that are inserted into the stator slots while adopting any of the four winding directions, of which FIG. 22 is clockwise. FIG. 23 is a developed view and a side view schematically showing the coil wound on the outside, FIG. 23 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 22 is viewed from the axial direction of the stator, and FIG. FIG. 23 is a winding pattern diagram on the crossover side when the coil shown in FIG. 22 is viewed from the axial direction of the stator.

  FIG. 25 is a developed view and a side view schematically showing a coil that is internally wound clockwise, and FIG. 26 is a winding on the lead wire side when the coil shown in FIG. 25 is viewed from the axial direction of the stator. Similarly, FIG. 27 is a winding pattern diagram on the crossover side when the coil shown in FIG. 25 is viewed from the axial direction of the stator.

  FIG. 28 is a developed view and a side view schematically showing a coil that is wound outwardly in a counterclockwise direction, and FIG. 29 is a winding on the lead wire side when the coil shown in FIG. 28 is viewed from the axial direction of the stator. Similarly, FIG. 30 is a winding pattern diagram on the crossover side when the coil shown in FIG. 28 is viewed from the axial direction of the stator.

  FIG. 31 is a developed view and a side view schematically showing the coil that is wound inward in the counterclockwise direction, and FIG. 32 is a drawing on the lead wire side when the coil shown in FIG. 31 is viewed from the axial direction of the stator. Similarly, FIG. 33 is a winding pattern diagram on the crossover side when the coil shown in FIG. 31 is viewed from the axial direction of the stator. Similar to the first embodiment, the configuration of the second embodiment is applicable to all the four winding directions shown in FIGS.

  Further, FIG. 34 explains the process shown in FIG. 21, and is a development view of the coil 16 when the winding 14 is inserted into the simulated slot 20c of the winding frame 20 and is wound inward clockwise, and FIG. It is an expanded view of the coil 16 when carrying out the internal winding in the anticlockwise direction explaining the process shown in FIG.

  In the first embodiment, the winding direction of the W (third) phase is reversed to the U (first) phase and the V (second) phase, and the U (first) phase, the W (third) phase, Although inserted in the slots in the order of the V (second) phase, in the second embodiment, the winding directions of the three phases are the same, while the V (second) phase, the U (first) phase, and the W (first) 3) Insert into slots in order of phase.

  In the second embodiment, the structures of the stator 10, the winding 14, the coil 16, the winding frame 20, and the like are not different from those of the first embodiment. Further, regarding the U-phase winding 14a, the V-phase winding 14b, and the W-phase winding 14c, the power input side is indicated by 14aa, 14ba, 14ca, and the opposite side is indicated by 14ac, 14bc, 14cc, or an underbar, and FIG. In the winding pattern diagram such as 23, the continuation of the three-phase windings 14a, 14b, 14c composed of the U, V, W phases is indicated by numbers from 001 to 048, which is the same as the first embodiment.

  Referring to FIGS. 34 and 35, the description will be made along FIG. 21. In S100, like the first embodiment, the reel 20 shown in FIG. 3 is used, and the V-phase winding 14b (more specifically, 14ba is used). ) Is inserted from the first simulated slot 20c1 and wound around the first simulated teeth group to form the V-phase leading coil winding portion 16bt, and the U-phase winding 14a (more specifically, 14aa) Is inserted from the second simulated slot 20c2 adjacent to the first simulated slot, and the U-phase leading coil winding portion 16at formed by winding the second simulated teeth group is used as the V-phase leading coil winding portion. The W-phase winding 14c (more specifically, 14ca) is inserted from the third simulated slot 20c3 adjacent to the second simulated slot, and the third simulated teeth group is wound. For W phase The head coil winding part 16ct superimposed to top coil winding part 16at for U-phase formed. At this time, the polarity of the end on the side where the U-phase winding 14a is inserted is opposite to that of the V-phase and W-phase windings 14b and 14c.

  Next, the process proceeds to S102, in which a V-phase adjacent coil winding portion 16bs is formed which is wound in series while inverting the winding direction in the simulated teeth group adjacent to the first simulated teeth group, and the second An adjacent coil winding portion 16as for U phase, which is wound in series while inverting the winding direction, is formed by superimposing the adjacent coil winding portion 16bs for V phase on a simulated tooth group adjacent to the simulated teeth group. Further, the adjacent coil winding portion for the W-phase, which is wound in series while the winding direction is reversed, to the simulated tooth group adjacent to the third simulated teeth group is used as the adjacent coil winding portion for the U-phase. The process of overlapping and forming 16as is repeated (seven times).

  Next, in S104, the U-phase, V-phase, and W-phase windings 14a, 14b, and 14c are removed from the winding frame 20 and attached to the teeth 10b of the stator 10 in the same manner as in S14 of the first embodiment.

  In the second embodiment, as described above, the stator core 10a having 6 × n (n: integer) teeth 10b includes the U (first) phase, the V (second) phase, and the W (third) phase. In the winding method of the stator 10 in which the three-phase windings 14a, 14b, and 14c are inserted into the slots 10c between the teeth, a winding frame including the simulated teeth 20b and the simulated slots 20c imitating the teeth and slots. 20, a predetermined number (three in the illustrated example) of the V-phase (second) winding 14b (more specifically, 14ba) is inserted from any first simulated slot 20c1 of the winding frame. A V (second) phase is formed by concentrically winding a predetermined number of times (three turns in the illustrated example) in any direction (counterclockwise in FIG. 34, clockwise in FIG. 35) over the first group of simulated teeth. Lead coil winding part 16 t and the U-phase (first) winding 14a (more specifically, 14aa) is inserted from the second simulated slot 20c2 adjacent to the first simulated slot, and a predetermined number (illustrated example) The first coil winding portion 16at for the U (first) phase formed by winding the second simulated tooth group consisting of three teeth in the same direction as the arbitrary direction a predetermined number of times. 2) Overlapping the leading coil winding portion 16bt for the phase, and further, the W-phase (third) winding 14c (more specifically, 14ca) is adjacent to the second simulated slot. The third simulated tooth group consisting of a predetermined number (three in the illustrated example) of simulated teeth is concentrically wound in the same direction as the predetermined number of times W ( 3rd) Lead coil winding part for phase A leading coil winding step (S100) in which 16 ct is overlapped with the leading coil winding portion 16at for the U (first) phase, and then wound around the simulated teeth group adjacent to the first simulated teeth group. The adjacent coil winding portion 16bs for the V (second) phase is formed by winding the predetermined number of times in series while reversing the rotation direction, and wound around a simulated tooth group adjacent to the second simulated tooth group. The adjacent coil winding part 16as for the U (first) phase, which is wound the predetermined number of times in series while reversing the rotation direction, is superimposed on the adjacent coil winding part 16bs for the V (2) phase. Further, the adjacent coil winding portion 16cs for W (third) phase is formed by winding the predetermined number of times in series while inverting the winding direction to the simulated teeth group adjacent to the third simulated teeth group. Next to the U (first) phase Adjacent coil winding step (S102) that repeats the process of overlapping and forming the coil winding portion 16as, and then winding of the U (first) phase, V (second) phase, and W (third) phase 14a, 14b, and 14c are removed from the winding frame 20 and attached to the teeth 10b of the stator 10 (S104), and the U (first) phase winding 14a is inserted in the leading coil winding step. The polarity of the side end is set to be opposite to that of the V (second) phase and W (third) phase windings 14b and 14c.

  Also in the second embodiment, the stator 10 shown in FIG. 1 and the like is manufactured through the steps shown in FIG.

  Specifically, a stator core 10a having 6 × n (n: integer) teeth 10b is provided with a three-phase winding 14a composed of a U (first) phase, a V (second) phase, and a W (third) phase. In the stator 10 in which the slots 14c and 14c are inserted into the slot 10c between the teeth, the stator 10 is inserted concentrically over a first group of teeth including a predetermined number of teeth inserted from an arbitrary first slot (simulated slot 20c1). A predetermined number of times are wound in an arbitrary direction to form the leading coil winding portion 16bt for the second phase, and the predetermined number of times in series while the winding direction is reversed to the teeth group adjacent to the first teeth group. The V (second) phase winding 14b (more specifically 14ba), which forms at least one (more specifically, seven) adjacent coil winding portions 16bs to be wound, the first slot Next to A second slot (simulated slot 20c2) is inserted and concentrically wound around the second group of teeth including the predetermined number of teeth and wound in the same direction as the predetermined direction U (first ) A phase leading coil winding portion 16at is formed, and an adjacent coil winding portion 16as that is wound a predetermined number of times in series while reversing the winding direction to a teeth group adjacent to the second teeth group. At least one (more specifically, seven) U (first) phase windings 14a (more specifically, 14aa) and a third slot (simulated slot 20c3) adjacent to the second slot. ) And wound concentrically over a predetermined number of third teeth groups in the same direction as the predetermined direction to form a leading coil winding portion 16ct for the W (third) phase. In addition, at least one (more specifically, seven) adjacent coil winding portions 16cs wound in the predetermined number of times in series while reversing the winding direction in the tooth group adjacent to the third tooth group. The W (third) phase winding 14c (more specifically, 14ca) to be formed is formed, and the polarity of the end portion on the insertion side of the U (first) phase winding 14a is set to V ( The second and W (third) phase windings 14b and 14c have opposite polarities to those of the windings 14b and 14c.

  In the stator according to the second embodiment, the U (first) phase, V (second) phase, and W (third) phase leading coil winding portions 16at, 16bt, and 16ct are overlapped one by one. Adjacent coil groups in which the U (first) phase, V (second) phase, and W (third) phase adjacent coil winding portions 16as, 16bs, and 16cs are superposed one after another. Are arranged so as to be adjacent to each other.

  Further, in the stator winding method in which the coil 16 is formed by using the winding frame 20 provided with the simulated teeth 20b and the simulated slots 20c imitating the teeth 10b and the slots 10c, the simulated teeth 20b of the winding frame 20 The number is configured to be greater than the predetermined number (three) by more than the number of the teeth 10b.

  Since the stator and the winding method thereof according to the second embodiment are configured as described above, they can be wound relatively easily as in the first embodiment, and the coils 16 are overlapped and connected in series. Therefore, for example, even if a temperature difference occurs depending on the position of the coil 16, the current flowing through the coil 16 is not biased, and torque fluctuations and vibrations do not occur.

  Further, when the U-phase (first), V-phase (second), and W-phase (third) windings 14a, 14b, and 14c form the adjacent coil winding portions 16as, 16bs, and 16cs, the leading coil winding Since the winding direction is reversed from the portions 16at, 16bt, and 16ct, the current does not flow in the opposite direction between the adjacent coils 16, and the magnetic flux is not canceled.

  Furthermore, the length of the connecting wire at the coil end can be minimized, so that the height of the coil end can be reduced and the height of the coil end can be reduced to reduce copper loss. It becomes possible to do.

  Further, after forming a coil group in which the leading coil winding portions 16at, 16bt, and 16ct of the U (first) phase, the V (second) phase, and the W (third) phase are overlapped one by one, the U (first) 1) Since the adjacent coil group in which the adjacent coil winding portions 16as, 16bs, 16cs of the phase, V (second) phase, and W (third) phase are superposed one by one is arranged adjacently, In addition to the above effects, compared to the case where the U (first) phase, V (second) phase, and W (third) phase coils 16 are knitted and combined so that they are evenly arranged after being formed in advance. Thus, the winding can be easily formed.

  Further, since the number of the simulated teeth 20b of the winding frame 20 is configured to be greater than the number of the teeth 10b of the stator core 10a by a predetermined number (three) or more, in addition to the above effects, the last coil 16 is formed. It is easier to do.

  In addition, after forming head coil winding part 16at, 16bt, 16ct in S10, S12 of 1st Example, and S100, S102 of 2nd Example, adjacent coil winding part 16as, 16bs, 16cs is formed, and FIG. However, the present invention is not limited to this. That is, a predetermined number (specifically, eight) of one-phase coils 16 are formed in succession, and then a predetermined number of coils 16 are formed for each of the other two phases, and then they are combined into FIG. It is good also as a state shown. Furthermore, the three-phase coils may be simultaneously formed in parallel.

  In addition, although the phase order of the three phases is U, V, and W, it is not limited thereto, and may be a phase order such as U, W, and V.

  The stator of the radial brushless motor is taken as an example of the stator according to the present invention, but the stator according to the present invention and the winding method thereof are not limited thereto. FIG. 36 shows a case where the stator according to the present invention and the winding method thereof are applied to the coil 16 of an axial type (axially opposed type) stator. The stator according to the present invention and the winding method thereof are axial type stators. It may be. Furthermore, the present invention is not limited to a brushless motor, and can be applied to any rotating electrical machine stator as long as it includes a three-phase coil such as an induction motor or a synchronous motor.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view schematically showing a stator according to a first embodiment of the present invention, and is a perspective view of a stator in a state where a coil formed by winding a winding in a clockwise direction is inserted into a slot. It is a perspective view which shows typically the coil shown in FIG. It is a perspective view which shows typically the winding frame used when winding a winding shown in FIG. 1 etc. and forming a coil. It is process drawing which shows the winding method (manufacturing method) of the coil of the stator which concerns on 1st Example of this invention. FIG. 4 is a developed view schematically showing a coil that is manufactured through the steps shown in FIG. 4 and inserted into a slot of the stator and wound in a clockwise direction, and a corresponding view of the stator as viewed from the direction A. It is a side view. FIG. 6 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 5 is viewed from the axial direction of the stator. Similarly, it is a winding pattern diagram on the crossover side when the coil shown in FIG. 5 is viewed from the axial direction of the stator. As in FIG. 5, a development view schematically showing a coil produced by going through the process shown in FIG. 4 and inserted into a slot of the stator and wound inward in a clockwise direction, and the stator seen from the direction A. FIG. FIG. 9 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 8 is viewed from the axial direction of the stator. Similarly, it is a winding pattern diagram on the crossover side when the coil shown in FIG. 8 is viewed from the axial direction of the stator. Similarly, it is a perspective view schematically showing the stator according to the first embodiment, and is a view similar to FIG. 1 showing a state where a coil formed by winding a winding in a counterclockwise direction is inserted into a slot. FIG. 12 is a perspective view schematically showing the coil shown in FIG. 11. As in FIG. 5, a developed view schematically showing a coil produced by going through the steps shown in FIG. 4 and inserted into a slot of the stator and wound outwardly in a counterclockwise direction, as viewed from the direction A. It is a side view of a stator. FIG. 14 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 13 is viewed from the axial direction of the stator. 14 is a winding pattern diagram on the crossover side when the coil shown in FIG. 13 is viewed from the axial direction of the stator. As in FIG. 5, a developed view schematically showing a coil produced by going through the steps shown in FIG. 4 and inserted in a slot of the stator and wound in a counterclockwise direction and viewed from the direction A. It is a side view of a stator. FIG. 17 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 16 is viewed from the axial direction of the stator. FIG. 17 is a winding pattern diagram on the crossover side when the coil shown in FIG. 16 is viewed from the axial direction of the stator. FIG. 5 is a developed view of a coil when a winding is inserted into a simulated slot of a winding frame and wound inward in a clockwise direction, explaining the process shown in FIG. 4. FIG. 5 is a development view of the coil when the winding is inserted into the simulated slot of the winding frame and wound in the counterclockwise direction, similarly illustrating the process shown in FIG. 4. It is process drawing which shows the winding method (manufacturing method) of the coil of the stator which concerns on 2nd Example of this invention. FIG. 21 is a developed view schematically showing a coil that is manufactured through the steps shown in FIG. 21 and inserted into a slot of the stator and wound in a clockwise direction, and a corresponding view of the stator as viewed from the direction A. It is a side view. FIG. 23 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 22 is viewed from the axial direction of the stator. Similarly, it is a winding pattern diagram on the crossover side when the coil shown in FIG. 22 is viewed from the axial direction of the stator. Similar to FIG. 22, a developed view schematically showing a coil produced through the process shown in FIG. 21 and inserted into a slot of the stator and wound inward in a clockwise direction, and the stator seen from the direction A. FIG. FIG. 26 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 25 is viewed from the axial direction of the stator. FIG. 26 is a winding pattern diagram on the crossover side when the coil shown in FIG. 25 is viewed from the axial direction of the stator. Similar to FIG. 22, a developed view schematically showing a coil that is manufactured through the process shown in FIG. 21 and inserted into a slot of the stator and is wound in the counterclockwise direction, and is viewed from the direction A. It is a side view of a stator. FIG. 29 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 28 is viewed from the axial direction of the stator. Similarly, it is a winding pattern diagram on the crossover side when the coil shown in FIG. 28 is viewed from the axial direction of the stator. As in FIG. 22, a developed view schematically showing a coil produced through the process shown in FIG. 21 and inserted into the stator slot and wound in the counterclockwise direction, and viewed from the direction A. It is a side view of a stator. FIG. 32 is a winding pattern diagram on the lead wire side when the coil shown in FIG. 31 is viewed from the axial direction of the stator. FIG. 33 is a winding pattern diagram on the crossover side when the coil shown in FIG. 32 is viewed from the axial direction of the stator. It is an expanded view of a coil when inserting a coil | winding in the simulation slot of a winding frame and carrying out an internal winding clockwise explaining the process shown in FIG. FIG. 22 is a development view of the coil when the winding is inserted into the simulated slot of the winding frame and wound in the counterclockwise direction, similarly explaining the process shown in FIG. 21. It is a perspective view which shows typically a coil when this invention is applied to the stator of an axial type brushless motor.

Explanation of symbols

  10 stator, 10a core, 10b teeth, 10c slot, 12 rotor, 14 windings, 14a U phase winding, 14b V phase winding, 14c W phase winding, 16 coils, 16a U phase coil, 16at first coil winding Part, 16as adjacent coil winding part, 16b V phase coil, 16bt leading coil winding part, 16bs adjacent coil winding part, 16c W phase coil, 16ct leading coil winding part, 16cs adjacent coil winding part, 20 winding frame , 20a body, 20b simulated teeth, 20c simulated slot

Claims (8)

In a stator formed by inserting a three-phase winding composed of a first phase, a second phase, and a third phase into a slot between the teeth in a stator core having 6 × n (n: integer) teeth,
a. A first coil is inserted from an arbitrary first slot and is concentrically wound a predetermined number of times over a first teeth group consisting of a predetermined number of teeth to form a first coil winding portion for the first phase, The first-phase winding forming at least one adjacent coil winding portion that is wound the predetermined number of times in series while reversing the winding direction in a teeth group adjacent to the first teeth group,
b. Inserted from the second slot of the fourth slot from the first slot, concentrically wound around the second group of teeth of the predetermined number of teeth and wound in the direction opposite to the arbitrary direction for the predetermined number of times. A three-phase leading coil winding portion is formed, and at least one adjacent coil winding portion that is wound the predetermined number of times in series while reversing the winding direction in the tooth group adjacent to the second tooth group is provided. The third phase winding to form one,
c. Inserted from the third slot, which is the second slot from the first slot, and concentrically wound around the third group of teeth including a predetermined number of teeth and wound in the same direction as the predetermined direction a number of times. At least one adjacent coil winding portion that forms the leading coil winding portion for two phases and is wound the predetermined number of times in series while reversing the winding direction in the tooth group adjacent to the third tooth group. The second phase winding to form,
The stator is characterized in that the polarities of the end portions into which the first-phase, second-phase, and third-phase windings are inserted are the same. In a stator formed by inserting a three-phase winding composed of a first phase, a second phase, and a third phase into a slot between the teeth in a stator core having 6 × n (n: integer) teeth,
a. A first coil group for a second phase is formed by concentrically winding a predetermined number of times over a first group of teeth including a predetermined number of teeth inserted from an arbitrary first slot, The second phase winding forming at least one adjacent coil winding portion wound in the series of the predetermined number of times while reversing the winding direction in the teeth group adjacent to the first teeth group,
b. The first slot is inserted from the second slot adjacent to the first slot and is concentrically wound around the second group of teeth including the predetermined number of teeth and wound in the same direction as the predetermined direction. A phase leading coil winding portion is formed, and at least one adjacent coil winding portion that is wound the predetermined number of times in series while reversing the winding direction in the tooth group adjacent to the second tooth group is formed. The first phase winding to be formed;
c. Inserted from a third slot adjacent to the second slot and wound concentrically over a predetermined number of third teeth groups for the predetermined number of times in the same direction as the arbitrary direction, leading for the third phase The coil winding portion is formed, and at least one adjacent coil winding portion that is wound the predetermined number of times in series while reversing the winding direction is formed in the tooth group adjacent to the third tooth group. 3-phase winding,
And a polarity of the end portion on the side where the first phase winding is inserted is opposite to that of the second phase and third phase windings.   After forming a coil group in which the first coil winding portions of the first phase, the second phase, and the third phase are overlapped one by one, the adjacent coil winding portions of the first phase, the second phase, and the third phase The stator according to claim 1, wherein at least one adjacent coil group in which the coils are overlapped one by one is arranged adjacently.   4. The stator winding method according to claim 1, wherein the coil is formed by using a simulated tooth that imitates the tooth and the slot and a winding frame that includes the simulated slot. 5. 4. The stator winding method according to claim 1, wherein the number of windings is greater than the number of teeth by the predetermined number or more. 5. A stator core having 6 × n (n: integer) teeth with a three-phase winding composed of a first phase, a second phase, and a third phase inserted through a slot between the teeth. In the line method,
a. A first simulated tooth comprising a predetermined number of simulated teeth by inserting a first winding from an arbitrary first simulated slot using a simulated tooth and a reel having a simulated slot imitating the teeth and slots. A first phase leading coil winding portion is formed by concentrically winding a predetermined number of times across the group to form a first coil winding portion, and the third winding is connected to the second slot of the fourth slot from the first simulated slot. The first coil winding portion for the third phase is formed by concentrically winding the second simulated tooth group consisting of a predetermined number of simulated teeth inserted from the simulated slot in a direction opposite to the predetermined direction. It is formed so as to overlap with the leading coil winding portion for one phase, and further, the second winding is inserted from the third simulated slot which is the second slot from the first simulated slot, and consists of a predetermined number of teeth. Third A head formed by concentrically winding the simulated teeth group a predetermined number of times in the same direction as the arbitrary direction and overlapping the second phase head coil winding portion with the third phase head coil winding portion Coil winding process;
b. Next, while forming the adjacent coil winding portion for the first phase that is wound the predetermined number of times in series while reversing the winding direction to the simulated teeth group adjacent to the first simulated teeth group, The adjacent coil winding portion for the third phase formed by winding the predetermined number of times in series while reversing the winding direction to the simulated tooth group adjacent to the second simulated teeth group is the adjacent coil winding for the first phase. Adjacent coil winding for the second phase formed by overlapping the winding portion and wound in series for the predetermined number of times while inverting the winding direction to the simulated teeth group adjacent to the third simulated teeth group An adjacent coil winding step that repeats a step of overlapping and forming a portion on the adjacent coil winding portion for the third phase;
c. Next, the first phase, second phase, and third phase windings are removed from the winding frame and attached to the stator teeth,
A stator winding method characterized in that in the leading coil winding step, the polarities of the inserted end portions of the first phase, second phase, and third phase windings are the same. A stator core having 6 × n (n: integer) teeth and a three-phase winding composed of a first phase, a second phase, and a third phase inserted in a slot between the teeth. In the line method,
a. A reel comprising a simulated tooth and a simulated slot imitating the teeth and slots is used, and the second winding is inserted from an arbitrary first simulated slot of the reel and a predetermined number of simulated teeth is formed. A first coil winding portion for a second phase is formed by concentrically winding a predetermined number of times over one simulated tooth group to form a second-phase leading coil winding portion, and the first winding is adjacent to the first simulated slot. A first coil winding portion for a first phase, which is inserted from two simulated slots and wound by winding a second simulated tooth group composed of a predetermined number of teeth in the same direction as the predetermined direction. The third coil is formed so as to overlap with the two-phase leading coil winding portion, and the third winding is inserted from a third simulated slot adjacent to the second simulated slot, and a predetermined number of simulated teeth are formed. 3 simulated tea A head formed by overlapping a first coil winding portion for the third phase, which is formed by concentrically winding the group a predetermined number of times in the same direction as the arbitrary direction, and overlapping the first coil winding portion for the first phase Coil winding process;
b. Next, an adjacent coil winding portion for the second phase is formed by winding the predetermined number of times in series while inverting the winding direction in the simulated teeth group adjacent to the first simulated teeth group, and The adjacent coil winding portion for the first phase, which is wound the predetermined number of times in series while reversing the winding direction between the simulated teeth group adjacent to the two simulated teeth group, is used as the adjacent coil winding for the second phase. Adjacent coil winding part for the third phase formed by being overlapped with the part and further wound in series with the simulated tooth group adjacent to the third simulated tooth group while the winding direction is reversed. Adjacent coil winding step of repeating the step of overlapping the first phase adjacent coil winding portion to form the first coil,
c. Next, the first phase, second phase, and third phase windings are removed from the winding frame and attached to the stator teeth,
In the stator coil winding step, the polarity of the end portion on the side where the first phase winding is inserted is opposite to that of the second phase and third phase windings. Winding method.   The stator winding method according to claim 5 or 6, wherein the number of simulated teeth on the winding frame is more than the predetermined number than the number of teeth.   A stator wound by the method according to claim 5.

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