JP4207095B2 - Electric motor stator constituent member, electric motor stator, electric motor manufacturing method - Google Patents

Description

  The present invention relates to a stator of an electric motor, in which a coil is wound around a plurality of core segments constituting each phase of windings connected in series, and the stator is manufactured by rolling and manufacturing an annular body. It is related with the manufacturing method.

  In recent years, electric motors have been developed with the highest priority given to high efficiency in the trend of energy saving. The biggest challenge in working with high-efficiency motors is the realization of high space factor windings in the status lot.

  The stator of the motor is insulated by winding the cylindrical stator core, but the winding work is difficult because of the cylindrical shape. The winding shape and slot shape are limited, and the winding space factor is limited. With respect to this, a method is disclosed in which a plurality of core segments constituting a stator are connected in series to form a winding, thereby creating a space where the winding can be easily controlled around the winding slot (Japanese Patent Laid-Open No. Hei 8). No. 19196).

  For example, as shown in FIG. 4, the core segments in series are punched and laminated as an integral core, and each core segment 11 is connected by a thin joint 14 that easily deforms. As shown in FIG. 2, each core segment 11 is a laminate of core sheets 10 punched alone and has a concave groove 15 and a convex piece 16, and the concave groove 15 and the convex piece 16 of each core segment 11 are provided. Are connected to form an in-line body, and the connecting portion is rotatable.

  In the case of forming an annular body by winding the core segment series body 13, the length of the connecting wire connecting the coils of each core segment is an important factor in the production of the annular body. If the length of the crossover line is too long, the crossover will occur and this will cause defects such as the crossover of the crossover in the motor completion process. On the other hand, if it is too short, it may cause defects such as disconnection during the formation of the annular body.

Further, as a winding method around the core segment series body 13, a method of winding a coil of each winding phase around each core segment 11 one by one is normal. FIG. 7A shows a conventional example in which winding is performed on a three-phase specification core segment series body. The terminal wire 22 at the beginning of winding is deposited in a terminal or the like arranged in the core segment of number 1, and the A-phase coil is wound around the core segments of numbers 1, 4, 7, and 10, and the terminal wire 22 at the end of winding is connected to number 10 The A-phase winding is completed by depositing it at a terminal arranged in the core segment. The B phase and C phase are sequentially wound in the same manner. Since the winding phases are sequentially wound in series in this manner, the winding man-hours become long, for example, a total of six terminal wire treatments are required.
JP-A-8-19196

  As described above, in the method of connecting a plurality of core segments to form a core segment serial body, and producing a stator by rounding to produce a stator, a crossover between core segments when rounded into a ring And a stator manufacturing method capable of ensuring an optimum length without being too long or too short, and a winding method for minimizing the number of man-hours for winding the core segment series body.

  The stator component of the electric motor according to the present invention includes a serial core segment series body including a plurality of core segments and a bent joint portion that connects the core segments, and a space that covers the core segments and through which the jumper wires are inserted. A plurality of insulators having a head portion and a coil wire wound around the core segment to form a coil portion and a crossover wire passing through the head portion. It can be obtained, and winding with the shortest man-hour is possible.

  As described above, according to the present invention, since the insulator is provided, it is possible to ensure the crossover with an optimum length. In addition, the present invention can provide a stator in which the connecting wire is wired on the annular body with an optimal length without pulling or bending when the core segment series body is rolled to form the annular body.

  Moreover, the present invention can realize the winding process to the core segment series body with the shortest man-hour.

  The electric motor stator constituting member of the present invention includes a series of core segment series bodies including a plurality of core segments and bent joints that connect the core segments, and a space that covers the core segments and through which the jumper wires are inserted. A plurality of insulators having a head portion and a coil wire wound around the core segment to form a coil portion and a crossover wire passing through the head portion, so that a crossover wire having an optimum length is obtained. And winding with the shortest man-hour is possible.

  Further, by arranging the crossover wire on the pitch line of the bent joint portion of the core segment, the crossover wire can be provided with an appropriate tension even if it is rounded from the series body to the annular body.

  A back plate on the back, an outer guide on the front, and a crossover guide whose tip is located near the bent joint of the core segment stand on the bottom plate of the head portion of the insulator. In addition to being inserted into the narrow space formed by the cable, wiring is made so as to be in contact with the tip of the crossover guide, so that the position of the crossover to the bent joint can be stably secured on the insulator. In addition, it is possible to ensure the stability of the connecting wire in the subsequent manufacturing process, and to maintain a stable wiring state of the connecting wire in the subsequent manufacturing process.

  Moreover, the stator of an electric motor can be easily made by rounding the stator structural member of this electric motor into an annular body.

  The stator manufacturing method according to the present invention includes a serial core segment series body including a plurality of core segments and a bent joint portion that connects the core segments, the core segment is covered, and a crossover is inserted. A coiled wire is continuously wound from a core segment on one end to a connecting body composed of a plurality of insulators having a head having a space, and a coil segment is wound on a terminal on the other end side. Winding a wire, winding a core segment of another winding phase from the other end side continuously, connecting a terminal on one side, and then winding a coil on the core segment of another winding phase from one side to the other end again Since it repeats, using the fact that one end of each winding phase coil is a neutral point in the motor coil, connecting multiple phase coil ends to one terminal, and each core segment in the core segment series body Since the winding process moves to a linear motion, the reciprocating motion is used as it is for the winding process, eliminating unnecessary operations and performing the winding process to the core segment series body in the shortest man-hour. It will be.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an insulator 30 attached to the core segment 11 and inserted into the core segment 11 like a cap. The insulator 30 covers the core segment 11 so that the coil is not in direct contact, the head 31 is disposed on the yoke portion of the core segment 11, the back plate 33 is behind the bottom plate 32, and the outer guide 34 is forward. Are arranged vertically, and a crossover guide 35 is formed at one end of the bottom plate 32.

  2 and 3 are wound around a series body of core segments 11 into which an insulator 30 is inserted, and a crossover wire 21 is wired to a head 31 of the insulator 30. The connecting wire 21 is positioned by the connecting wire guide tip 36 on the core segment bent joint 40 through the wiring space 37 formed between the back plate 33 and the outer guide 34. The connecting wire guide tip 36 is in the vicinity of the center of the core segment bent joint portion 40, and the connecting wire 21 is arranged so as to be wired through the center of the core segment bent joint portion 40. As a result, even if each core segment 11 is bent around the core segment bent joint 40 to form an annular body, the connecting wire 21 can be wired on the annular body with an optimal length without being pulled or bent. Become.

  FIG. 5 is a process of winding the coil 20 around the core segment series body 13 and shows a winding example of a three-phase specification with a series body of 12 core segments. Although no insulator is inserted in the core segment 11 in the figure, a coil is actually wound around the core segment 11 in which the insulator 30 is inserted.

  The core segment 11 is numbered 1, 2, 3,... From one end. First, as the winding phase A phase winding, the winding start line is deposited in the A phase terminal 18-A, and then the core segments 11-1, 11-4, 11-7 of numbers 1, 4, 7, 10 are used. , 11-10, the coil 20 is sequentially wound through the crossover wire 21. After the coil 20 is wound around the core segment 11-10, the coil terminal wire is left at the neutral point terminal 19, and the numbers 11, 8, The coil 20 is wound around the core segments 11-11, 11-8, 11-5, and 11-2 through the crossover wires 21 sequentially. After the coil 20 is wound around the core segment 11-2, the coil terminal wire is deposited in the B-phase terminal 18-B, and the terminal wire is cut. Next, after the winding start line is entrusted to the C-phase terminal 18-C as the winding phase C-phase winding, the core segments 11-3, 11-6, 11-9 of numbers 3, 6, 9, 12 are used. , 11-12, the coil 20 is wound around the crossover wire 21 sequentially. After the coil 20 is wound around the core segment 11-12, the coil terminal wire is deposited in the neutral point terminal 19 to complete the winding process.

The disassembled perspective view of the core segment of Example 1 of this invention Enlarged view of the main part of the core segment series Partial view of the same core segment series Partial view of conventional core segment series Explanatory drawing of Example 2, (a) is a perspective view of the same core sheet, (b) is a perspective view of the same core segment, (c) is a figure showing the same core segment series body Core segment serial body winding process diagram of embodiment 2 of the present invention Explanatory drawing of a prior art example, (a) is a figure which shows the core segment winding Example, (b) is a figure which shows the same annular body

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Core sheet 11 Core segment 12 Core segment group 13 Core segment serial body 17 Yoke part 20 Coil 21 Crossover wire 30 Insulator

Claims (3)

A plurality of insulators comprising a series of core segment series bodies each composed of a plurality of core segments and bent joints that connect each of the core segments, and a head section that covers the core segments and has a space through which a crossover is inserted. And a coil wire that is wound around the core segment to form a coil portion and that serves as a connecting wire that passes through the head portion, and the connecting wire is disposed on the pitch line of the bent joint portion of the core segment. In the stator constituent member of the electric motor, a crossover guide is formed on a bottom plate of the head portion of the insulator so that the crossover is arranged on a pitch line of the bent joint portion of the core segment, and a tip of the crossover guide is A stator constituting member of an electric motor located near a bent joint portion of the core segment. The stator of the electric motor which rounded the stator structural member of the electric motor of Claim 1 to make the annular body. A plurality of insulators comprising a series of core segment series bodies each composed of a plurality of core segments and bent joints that connect each of the core segments, and a head section that covers the core segments and has a space through which a crossover is inserted. The coil wire is continuously wound from one end of the core segment to the core segment of one winding phase, the coil wire is wound around the terminal at the other end, and the other winding phase is wound from the other end. In the method of manufacturing an electric motor, in which a core segment is continuously wound, after a terminal is connected on one side, a step of winding a coil on a core segment of another winding phase from one side to the other end again is repeated.
A crossover guide is formed on the bottom plate of the head portion of the insulator so that the crossover is arranged on the pitch line of the bending joint of the core segment, and the tip of the crossover guide is near the bending joint of the core segment. The manufacturing method of the electric motor arrange | positioned so that the said crossover line may contact | connect the front-end | tip of the said crossover guide.

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