JP2007181313A - Motor stator and motor using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the efficiency or the reliability of electric work involving a motor. <P>SOLUTION: An insulator is provided for insulation between different phases in one and the same slot, and a coil is prevented from jumping out of the slot opening. An insulating member is inserted between coils of different phases. The insulating member includes, such members at an coil end at which the winding of the coil jumps out as an insulator for insulating a slot opening 40; and a support mechanism for supporting a connecting wire or a lead wire between the poles of coils. By using PPS, PBT, or LCP as the material of the insulating member, the insulating member of integral structure can be easily formed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for providing a multiphase, multipolar electric motor.

  Regarding the structure in the slot of the stator of the electric motor, there is one described in Patent Document 1.

JP 2004-72857 A (page 3-4, FIG. 1, page 6, FIG. 9)

  The present invention has a plurality of winding terminals (coil legs) in a stator of an electric motor, and interphase insulation in a winding in a slot of an electric motor stator in which different two-phase coils are inserted in the same slot. It is an object of the present invention to make it easier to handle the connecting wire and the lead wire and to improve the reliability of insulation.

  In order to improve the characteristics of the electric motor, it is necessary to increase the coil occupation ratio in the slot. However, when the cross-sectional area of one coil is increased, winding workability is deteriorated, and in some cases, the winding itself cannot be performed.

  Therefore, winding may be performed with a plurality of coils having a small cross-sectional area without increasing the cross-sectional area per coil. However, in a stator having a winding structure in which a plurality of lead wires and the like from a coil are output, insulation between different phases in the slot, crossover between electrodes, and processing of lead wires become complicated.

  On the other hand, an insulating member is provided that integrates a structure that supports the coil by holding the coil between the different phases in the slot of the stator and the coil of the slot opening, and supports the winding of the coil at the coil end. .

  In addition, the insulating member is provided with a portion for preventing the coil from falling toward the rotor, thereby adjusting the shape of the coil.

  By providing the insulating member, it is possible to improve the workability of winding the stator into the slot, and to improve the reliability of the insulating properties of the coil, the jumper wire, the lead wire, and the like.

  As described above, according to the present invention, it is possible to provide an electric motor whose reliability is improved as compared with the prior art.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a view for explaining a stator provided with an insulating member according to an embodiment of the present invention.

  In FIG. 1, there is a slot 30 between a plurality of teeth 70, and a coil 50 is provided in the slot 30 by winding a wire. From this coil 50, the connecting wire 10 comes out, and wiring with a stator is performed including other connecting wires 10, lead wires, and the like. In addition, there is a slot opening 40 between the teeth 70.

  In FIG. 1, an insulating member 60 of this embodiment is provided between adjacent coils 50. Further, the insulating member 60 is provided with a coil support member 20 that is a member that reduces and prevents the phenomenon of the coil 50 falling toward the inside of the stator, that is, toward the rotor.

  Insulating portions between different phases in the same slot and the coil of the slot opening 40 are prevented from jumping out, and the support mechanism is used to support the connecting wire and the lead wire between the insulating portion and the coil poles for insulating the slot opening 40. By inserting an insulating member provided at the end of the coil where the leg comes out, it is possible to easily improve the workability of the electrical work or to increase the reliability of the insulation.

  FIG. 2 is a view for explaining the shape of the insulating member 60 of FIG. In FIG. 2, the width of the insulating member 60 is T, and the long portion in the longitudinal direction in FIG. 2 of the coil support member 20 is the body portion 25 of the coil support member, and this width is W.

FIG. 3 is a view showing the relationship between the insulating member 60 and the slot 30 in FIGS. 1 and 2. FIG. 3 illustrates that the coil is also wound inside the slot 30 and that the insulating member 60 achieves insulation between different phases. In FIG. 3, when the width of the slot opening 40 is D, the following relationship is established between the width T of the insulating member 60 and the width W of the body portion 25 of the coil support member. .

W>D> T (Equation 1)

With this relationship (Equation 1), it is possible to prevent the coil inside the slot 30 from coming out of the slot 30 from the slot opening 40 or to make it difficult.

  The coil is difficult to exit from the slot opening 40 at the body portion 25 of the coil support member, and the width W of the body portion 25 of the coil support member is larger than the width D of the coil opening portion 40. The body portion 25 of the coil support member can be prevented from coming out of the slot opening 40 or can be difficult.

  FIG. 4 is a diagram for explaining another embodiment of the present invention. This embodiment is characterized in that the wire support part 100 is provided. Since this wire support part 100 can also support the crossover wires 10 from the plurality of coils 50 and the wire constituting the stator such as lead wires, it is possible to improve the workability of winding and wiring. It becomes.

  5 and 6 are diagrams showing another embodiment of the wire support 100. FIG. 5 and 6, a partition member is provided on the wire support portion 100. For example, in this embodiment, three-phase windings, crossover wires, lead wires, and the like can be appropriately combined for each phase. It becomes possible. However, in FIG. 5 and FIG. 6, two partition members are provided so as to be divided into three. However, the present invention is not limited to this, and a plurality of partition members may be provided as necessary.

  Further, since the coil in the slot is pressed against the iron core between the coils of different phases and from both sides of the slot opening, the heat generated in the coil can be effectively radiated from the iron core portion. For this reason, the heat dissipation of the coil can be improved as compared with the conventional case.

  Note that by using PPS, PBT, or LCP as the material of the insulating member, an integrally structured insulating member can be easily formed. Further, by using this material, it is possible to provide an electric motor that can withstand deterioration of the insulating member due to a refrigerant such as, for example, a Freon refrigerator, and to ensure an appropriate strength of the insulating member, and to easily insert the insulating member into the slot. It becomes.

Figure (photo) of a stator of an electric motor according to an embodiment of the present invention Figure of an insulating member of an embodiment of the present invention The figure explaining the relationship between the insulation member and slot of the Example of this invention Illustration of insulation member of another embodiment of the present invention The other figure of the wire support part provided in the insulating member of another Example of this invention Another figure of the wire support part provided in the insulating member of another Example of this invention

Explanation of symbols

  10: Crossover, 20: Coil support member, 25: Body portion of coil support member, 30: Slot, 40: Slot opening, 50: Coil, 60: Insulating member, 70: Teeth, 100: Wire support portion.

Claims (4)

It has a slot to insert a coil in the iron core,
In a motor stator having a winding structure in which different two-phase coils are provided in the same slot,
An insulating member is provided between the coils of different phases,
A motor stator, wherein a coil support member for reducing the coil from falling toward the inside of the motor stator is provided on the insulating member. In the electric motor stator according to claim 1,
An electric motor stator comprising a wire support portion for supporting a wire from the coil. In the electric motor stator according to claim 1,
An electric motor stator, wherein a material of the insulating member is PPS, PBT, or LCP. It has a slot to insert a coil in the iron core,
An electric motor stator having a winding structure in which different two-phase coils are provided in the same slot;
In an electric motor having a rotor provided inside the electric motor stator,
An insulating member is provided between the coils of different phases,
An electric motor comprising: an electric motor stator having a coil supporting member provided on an upper portion of the insulating member for reducing the coil from falling toward the inside of the electric motor stator.

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