JPH0742209Y2 - Winding connection structure of stator core - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a stator core winding connection structure applied to a motor or a generator.

(Prior Art) A terminal of a winding of a stator core in a conventional motor or generator is manually conducted.

11 to 16 show an example of a conventional stator core winding connection structure. As shown in FIG. 11, the stator core 1 has a plurality of salient poles 2 radially. Each salient pole 2 is provided with a winding 3 as shown in FIG. The number of salient poles 2 and windings 3 is a positive integer m when the number of phases is n.
Is multiplied by m · n. In the example shown in the figure, there are three phases, so n = 3 and m = 4, and a total of 12 salient poles 2 and windings 3 are provided.
Consists of. The winding 3 is applied in such a manner that one of the three phases U, V and W is continuously connected to the predetermined salient pole 2, then the winding of the next phase, and then the remaining phase. The winding is continuously performed on each of the predetermined salient poles 2. FIG. 12 shows a state in which the winding is performed in this way, and there are a total of 6 terminals at the beginning and end of each winding of the U, V, and W phases. Next, as shown in FIG. 13, the winding beginnings of the windings 3 of the respective phases are bundled in common and subjected to conduction by soldering or the like to form a common processing section 4. Next, FIG. 14,
As shown in FIG. 15, the stator core 1 is fixed to the circuit board 6 by the screws 7 via the spacers 5, and the winding end terminals of the windings 3 of each phase of U, V and W are soldered to the lands 8 of the board 6. To do. The common processing unit 4 is housed between appropriate windings or between windings and salient poles. As a result of being wound and terminated in this manner, three-phase windings are connected in a so-called star shape as shown in FIG.

(Problems to be Solved by the Invention) According to the winding connection structure of the conventional stator core described above, a common processing step for connecting one end of each phase winding is required, and in the common processing step, A lot of work time is required because the work of bundling the ends of the windings and the work of conduction by soldering are required. Further, since the terminals of each winding are not fixed, it is difficult to automate the work of bundling the ends of each winding and the conduction processing work, and also the automation of the work of soldering the terminals of each phase winding to the circuit board. It is difficult, and all these tasks are done manually.

The present invention has been made in view of such a conventional technique, and enables common processing to be performed at the same time while winding, thereby eliminating conventional common processing by hand. During the winding process, the winding is fixedly stretched on a part of the core holder to form a crossover wire, and this crossover wire part can be soldered to the land of the board, An object of the present invention is to provide a winding connection structure for a stator core, which enables automation of soldering work or reflow soldering.

(Means for Solving the Problems) The present invention comprises an n-phase winding, a stator core having m · n salient poles each provided with one-phase winding, and an insulator and fitted to the stator core. In a stator having a core holder and a substrate for fixing the stator core via the core holder, the core holder has a plurality of guide portions for positioning by connecting crossover wires between salient poles of windings. Formed on the inner peripheral side of the base of the stator core,
The guide portion has a protrusion, and the protrusion is fitted into a hole provided in the substrate, while the n-phase winding has the m.
It is formed by winding the same winding on n salient poles, and the winding start or winding end of each phase winding is stretched between adjacent guide portions to form a crossover wire. The crossover wires of all the phases are converged between a set of adjacent guide portions, and each crossover wire is individually soldered to the n + 1 lands provided on the substrate and star-connected. It is characterized by

(Operation) Start winding the wire on the salient pole corresponding to the predetermined phase of the stator core,
After the winding of that phase is completed, the same wire is used to transfer to the winding of another phase.At this time, the wire is stretched over the guide part of the core holder to form a crossover wire, Winding is applied to the salient pole at the corresponding predetermined position. When the wound stator core is fixed to the board, the connecting wire is positioned so as to cross the land of the board, and the connecting wire can be directly soldered to the land. Crossover wires that do not need to be connected to the board are cut, and the windings of each phase are separated.

(Embodiment) An embodiment of the winding connection structure of the stator core according to the present invention will be described below with reference to FIGS. 1 to 10.

1 and 2, the stator core 11 has a plurality of salient poles 12 extending in a radial direction from a ring-shaped portion on the inner peripheral side. The number of salient poles 12 is m · n (m is a positive integer) when the number of phases is n (n is an integer of 2 or more). In the illustrated example, n = 3, that is, a three-phase configuration, and when m = 4, a total of twelve salient poles 12 are formed. Except for some salient poles 12 and other salient poles 12, commutating poles 18 extend between the salient poles 12. However, whether or not to provide the commutating pole 18 is arbitrary. The outer peripheral surface of each salient pole 12 may be formed into a smooth circular arc surface, or may be formed into concavities and convexities at regular intervals to have a pole tooth shape.

A core holder 20 made of an insulating material is fitted on the inner peripheral side of the stator core 11. As shown in FIGS. 3 to 5, the core holder 20 is formed in a ring shape so as to fit on the inner peripheral side of the base portion 11a of the stator core 11 as a whole, and the guide portions 21 are formed at six positions on the inner peripheral side of the ring. Are formed at equal intervals. Each of the guide portions 21 is formed on the inner peripheral side of the base portion 11a of the stator core 11, and projects on one surface side of the core holder 20 and forms a receiving surface for a wire rod, which will be described later, on the guide surface 22 and the guide surface 22. And a projecting portion 23 protruding like an eaves. The guide surface 22 is formed in a chevron shape in plan view toward the outer peripheral surface side of the core holder 20. An appropriate number of protrusions 27 are formed on the surface of the core holder 20 opposite to the guide portion 21, and the protrusions 27 are press-fitted into the holes 14 of the stator core 11 to fix the core holder 20 to the stator core 11. Has been done. The core holder 20 has three guide parts above.
It has an arm portion 25 extending from 21 toward the center side, and a hole 26 for attaching the stator core 11 to a substrate described later is formed in the middle portion of the arm portion 25.

The salient poles 12 of the stator core 11 integrally including the core holder 20 are each provided with one-phase winding. As shown in FIG. 6, four salient poles U ₁ , U ₂ , U ₃ , U ₄ corresponding to the U phase and four salient poles V ₁ corresponding to the V phase are provided for each of the 12 salient poles 12. , V ₂ , V
₃ and V ₄ and four salient poles W ₁ , W ₂ , W ₃ and W ₄ corresponding to the W phase are divided into U ₁ , W ₂ , V ₂ and U in the counterclockwise direction in FIG. ₂ ,
_{W 3, V 1, U 3} , W 4, V 4, U 4, W 1, shall be arranged in the order of V _3.
Pass a continuous long wire between salient poles W ₄ and V ₄ to start winding,
The salient pole of the six guide portions 21 of the core holder 20 described above.
V _4, the guide portion 21a and the salient pole located on the center line passing between U ₄
V _3, W ₁ between the guide surface 22 of the guide portion 21b located on the center line passing through the multiplying said wire, the two guide portions 21a, after the salient poles U ₁ wound once forming the connecting wire 30 between 21b Winding, and then winding is applied to U ₂ , U ₃ , and U ₄ . Subsequently the wire, the guide portion 21a and the salient poles U _3, W ₄ over between the respective guide surfaces 22 of the guide portion 21f located on the center line passing through the guide portions 21a, 2
After forming the crossover wire 30 between 1f, the salient poles V ₁ , V ₂ , V ₃ , and V ₄ are wound. Continuing with the guide portion 21f, a guide portion 21e that is located on the center line passing between stator teeth W _3, V _1, and the guide portion 21d which is positioned on the center line passing between stator teeth V _2, U _2, salient poles U a guide portion 21c located on the center line passing between _1, W _2, the guide unit 2
Crossover wires 30 are formed between the respective guide portions so as to hang on the respective guide surfaces 22 of 1b, and then the salient poles W ₁ , W ₂ , W ₃ and W ₄ are wound. Further, after the wire is drawn around the salient poles V ₄ and U ₄ , it is hung on the guide portion 21a and the guide portion 21f to form a crossover wire 30 between these two guide portions. That is, the crossovers of all phases are converged between the adjacent guide portions 21a and 21f. Reference numeral 13 in FIGS. 7 to 9 indicates each winding formed as described above. The winding end of the wire rod after the winding 13 is applied to each salient pole 12 is drawn out from between the appropriate salient poles, for example, between the salient poles V ₁ and U ₃ as in the embodiment of FIG. FIG. 7 shows a crossover wire in which a wire is stretched between the guide portions 21.
The state in which 30 is formed is shown by making a cross section of the stator core.

The above winding work can be automatically performed by an automatic winding machine. FIG. 10 shows the result of the above winding work in a wiring diagram, in which the three-phase windings of U, V and W are connected in series. Therefore, if the winding end of the U-phase winding, the winding start of the V-phase winding, and the winding end of the W-phase winding are collectively connected, this can be used as a common processing unit. If the winding end and the winding start of the W-phase winding are cut off, the winding end of the V-phase winding and the winding start of the W-phase winding are combined with the winding start of the U-phase winding. In total, the power supply terminals for each of the three phases can be used, and a so-called star type connection can be obtained.

In order to obtain the star-shaped connection, the following procedure is performed in the illustrated embodiment. That is, as shown in FIG. 8 and FIG. 9, the stator core 11 integrally having the core holder 20 made of an insulating material and having the winding finished, and the projecting portion 23 of the guide portion 21 of the stator core 11 are connected to the circuit. The stator core 11 is fixed to the core holder 20 by press-fitting it into the holes 32 of the board 16, aligning the holes 26 of the arm portions 25 of the core holder 21 with the holes of the board 16, and inserting and tightening the screws 35 into these holes. It is fixed to the circuit board 16 via. Stator core 11 on circuit board 16
N + 1 on the side surface, that is, the common processing unit 1 with a phase number of 3
The four lands 41, 42, 43, 44 corresponding to the number of the above are formed. As shown in FIG. 6, among the above-mentioned lands, the crossover wire 30 at the beginning of the U-phase winding crosses over the land 41, the end of the U-phase winding over the land 42, and V The crossover wire 30 at the beginning of winding of the phase winding crosses the crossover wire 30 at the end of winding of the W phase winding, and the crossover wires of all phases are focused on the land 42. Further, the crossover wire 30 at the end of the V-phase winding crosses over the land 43, and the crossover wire 30 at the beginning of the W-phase winding crosses over the land 44. So each land
By soldering the crossover wire 30 that crosses 41, 42, 43, and 44 on them, the input terminals of each phase of U, V, and W are printed on the board 16.
Can be connected to the given circuit pattern above,
Since the winding start or winding end of all phase windings are focused on the land 42, common processing can be performed.
Although the wire is subjected to an insulating film treatment, it can be soldered while peeling off the film with a soldering robot or while melting the film with heat simultaneously with soldering. land
The ends of the winding start and the winding end protruding from the soldering portion to the 41 and the land 42 are wound around the ribs of the stator core 11 and fixed, and the excess portion is cut, and the winding of each phase is separated. As shown by the broken lines in FIGS. 6 and 10, the crossover wire 30 from the winding end of the V-phase to the winding start of the W-phase is unnecessary, so that the land 41, 42, 43, 44 is Solder the crossover 30 and then cut it.

As described above, according to the illustrated embodiment, the core holder
A plurality of guide portions 21 formed on the 20 are hung with a connecting wire 30 between the salient poles 12 of the winding 13, and the stator core 11 is inserted through the core holder 20.
Since the crossover wire 30 is aligned with the lands 41, 42, 43, and 44 on the board 16 and soldered onto these lands when they are fixed to the board 16, each phase in the winding process Common processing can be performed simply by soldering the end of the winding to the land, and there is no need to provide an independent common processing step as in the conventional case. Further, by simply soldering the crossover wire 30 positioned between the guide portions 21 of the core holder 20 to the land of the circuit board 16 to which the stator core 11 is fixed via the core holder 20, the end treatment of each phase winding 13 can be performed. In order to complete, the winding work and the terminal treatment by the subsequent soldering can be automated, or a kind of soldering is done by placing solder on the land in advance and pressing the end of the winding 13 on this. It is possible to perform so-called reflow soldering which is automatic soldering. Further, as described above, since it is possible to automate the winding and terminal processing, it is possible to reduce the cost. Furthermore, the stator core 11
Since the guide portion 21 is formed on the inner peripheral side of the base portion 11a, the space of the inner peripheral portion of the stator core 11 can be utilized, and the device can be thinned. Further, since the projection 23 formed on the guide portion 21 is fitted into the hole provided in the substrate 16 and the stator core 11 is mounted on the substrate 16, the core holder 20 and the stator core can be easily positioned. Therefore, the device can be made thinner.

The present invention can be applied to a generator as well as a motor. Further, the number of phases n can be arbitrarily set as long as it is an integer of 2 or more, and the number of windings of one phase can also be arbitrarily set. Further, the type of the motor or generator to which the present invention is applied is not particularly limited, and is applicable to, for example, a stepping motor.

(Effects of the Invention) According to the present invention, a plurality of guide portions formed on the core holder are hooked with connecting wires between salient poles of the winding, and the connecting wires are fixed with the stator core fixed to the substrate via the core holder. Since it is soldered to the land of the board, common processing can be performed by simply soldering the end of each phase winding to the land in the winding process, and an independent common processing process is provided as in the past. No need. In addition, since the terminal processing of each winding is completed simply by soldering the crossover wire positioned between the guide parts of the core holder to the land of the board, it is possible to automate the terminal processing by winding work and subsequent soldering. Or reflow soldering, which is a type of automatic soldering, becomes possible. Further, as described above, since it is possible to automate the winding and terminal processing, it is possible to reduce the cost. Further, since the guide portion is formed on the inner peripheral side of the base portion of the stator core, the space of the inner peripheral portion of the stator core can be utilized, and the device can be thinned. Also, the protrusion formed on the guide portion is fitted into the hole provided on the substrate,
Since the stator core is mounted on the substrate, the core holder and the stator core can be easily positioned, and the device can be made thin.

[Brief description of drawings]

1 is a plan view showing an example of a stator core and a core holder used in a stator core winding connection structure according to the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG.
FIG. 4 is an enlarged plan view of the core holder, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a plan view showing a part of the core holder in an enlarged scale, and FIG. FIG. 7 is a plan view showing an example of a winding sequence for a stator core having a core holder, FIG. 7 is a sectional view taken along line VII-VII in FIG. 6, and FIG. 8 is an implementation of a winding connection structure for a stator core according to the present invention. A plan view showing the completed state of the example, FIG. 9 is a line IX in FIG.
-IX is a cross-sectional view taken along line IX, FIG. 10 is a circuit diagram showing the winding sequence and terminal processing, and FIG. 11 is a plan view showing an example of a stator core used in a conventional stator core winding connection structure. FIG. 13 is a plan view showing a state in which the stator core is wound, FIG. 13 is a plan view showing the same common processing, and FIG. 14 is a plan view showing the same terminal processing.
FIG. 15 is a cross-sectional view taken along the vertical line in FIG. 14, and FIG. 16 is a circuit diagram showing a winding state according to the conventional example. 11 …… stator core, 12 …… salient pole, 13 …… winding, 16 ……
Substrate, 20 …… Core holder, 21 …… Guide part, 30 …… Crossing wire, 41,42,43,44 …… Land.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-52-118501 (JP, A) Actually opened 63-74070 (JP, U) Actually opened 63-100944 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. Insulating an n-phase (n is an integer of 2 or more) winding, and a stator core having m.n (m is a positive integer) salient poles, each of which is provided with one-phase winding In a stator comprising a core holder made of a product and fitted to a stator core, and a substrate for fixing the stator core via the core holder and connecting the windings, the core holder includes salient poles of the windings. A plurality of guides for positioning by connecting crossovers are formed on the inner peripheral side of the base of the stator core, and the guide has a protrusion, and the protrusion fits into a hole provided in the substrate. On the other hand, the n-phase winding is formed by winding the same winding around the m · n salient poles, and the winding start or winding end of each phase winding is , Is stretched between the adjacent guide parts to form a crossover The crossover wires of all the phases are converged between a set of adjacent guide portions, and each crossover wire is individually soldered to the n + 1 lands provided on the substrate to be star-connected. Winding structure of the stator core characterized by.