JP2006050819A - Stator for magnet generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator for a magnet generator capable of preventing a coil and a crossover from overhanging toward the annular side of a stator core across an insulating coating layer. <P>SOLUTION: The coil 4 is wound around each salient pole 1b of the stator core 1, where the salient pole 1b radially projects to the outer periphery of an annular section 1a via the insulating coating layer 3. Each coil 4 is connected by the crossover 5. An overhang prevention annulus 7 prevents the coil 4 and the crossover 5 from overhanging toward the side of the annular section 1a across the insulating coating layer 3, and is fixed onto the surface of the annular section 1a in the stator core 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a stator for a magnet generator.

  The conventional stator for a magnet generator has the structure shown in FIGS. 5 (A) and 5 (B) and FIG. Here, FIG. 5A is a longitudinal sectional view of a conventional stator for a magnet generator, FIG. 5B is a front view of the conventional stator for a magnet generator, and FIG. 6 is P in FIG. It is an enlarged view of a part.

  This stator for a magnet generator includes a stator core 1 having a laminated structure in which projecting pole portions 1b project radially from the outer periphery of an annular portion 1a, and the stator core 1 is disposed on the outer periphery of each projecting pole portion 1b. Coil 4 is wound through insulating coating layer 3 on the surface of side plate 1A, each coil 4 is connected by jumper wire 5, and fixing holes 6 are provided at a plurality of locations in the circumferential direction of annular portion 1a. (For example, see Patent Document 1).

  The side plate 1A is made of an iron plate, and a flange 1Af is provided at the end of the side plate 1A at the tip of the convex pole portion 1b to prevent the coil 4 from jumping out. The insulating coating layer 3 is also applied to the outer peripheral side surface of the convex pole portion 1b.

In FIG. 5A, φD is the inscribed circle diameter of each coil 4, φD1 is the inner diameter of the insulating coating layer 3, and φD> φD1. H1 is the wiring height of the crossover wire 5, and H2 is the coil height.
Japanese Utility Model Publication No. 56-22953

  However, in the conventional structure as described above, the coil 4 and the crossover wire 5 protrude from the inner diameter φD1 of the insulating coating layer 3 to the annular portion 1a side and are crushed by a screw, a rivet or the like passed through the fixing hole 6, There was a problem that the insulation performance of the coil 4 and the crossover wire 5 was lowered.

  Further, when the coil 4 or the jumper wire 5 protrudes from the inner diameter φD1 of the insulating coating layer 3 toward the annular portion 1a, the coil 4 or the jumper wire 5 may be modified and returned to the insulating coating layer 2. In this way, there is a problem that it takes time and increases the cost.

  An object of the present invention is to provide a stator for a magnet generator that can prevent a coil or a jumper wire from protruding beyond an insulating coating layer to an annular portion side of a stator core.

  Another object of the present invention is to provide a magnet generator capable of preventing the coil and the jumper wire from protruding beyond the insulating coating layer to the fixing hole side in the annular portion of the stator core and preventing the coil and the jumper wire from floating. It is to provide a machine stator.

  According to the present invention, a coil is wound on each of the convex pole portions of the stator core, the convex pole portions projecting radially on the outer periphery of the annular portion, via an insulating coating layer, and the coils are connected with a jumper wire. Targeted magnet generator stators.

  In the stator for a magnet generator according to the present invention, an overhang for preventing the coil and the connecting wire from projecting to the annular portion side beyond the insulating coating layer on the surface of the annular portion of the stator core. The prevention annular body is fixed.

  In this case, it is preferable that the overhang prevention annular body has a structure including a ring-shaped portion that rests on the surface of the annular portion of the stator core and a rising flange portion that rises from the outer periphery of the ring-shaped portion. .

  The overhang prevention annular body includes a ring-shaped portion that rests on the surface of the annular portion of the stator core, a rising flange portion that rises from the outer periphery of the ring-shaped portion, and a ring-shaped portion from the rising tip of the rising flange portion. It is preferable to have a structure including a pressing portion protruding outward in the radial direction in a direction parallel to the portion.

  Alternatively, the projecting prevention annular body includes a ring-shaped portion that rests on the surface of the annular portion of the stator core, and a rising flange portion that rises from the outer periphery of the ring-shaped portion, and the annular portion and the rising flange portion The outer diameter is larger at the position of each fixing hole than the position of the fixing hole on the side where the ring-shaped portion is expanded and smaller than the inner diameter of the position where the coil is to be installed, It is preferable that the positions between the holes are smaller than the positions of the envelopes outside the fixing holes and larger than the positions of the envelopes inside the fixing holes.

  In the stator for a magnet generator according to the present invention, an overhang prevention annular body that prevents a coil or a jumper wire from projecting over the insulating coating layer to the annular portion side is fixed to the surface of the annular portion of the stator core. Therefore, the rising flange portion of the overhang prevention annular body can prevent the coil and the crossover from overhanging the insulating coating layer and overhanging to the annular portion side of the stator core. According to the rising flange portion of the overhang prevention annular body, it is possible to reliably prevent the coil and the crossover wire from projecting over the insulating coating layer to the annular portion side of the stator core. It can be reliably prevented that the insulation performance of the coil and the jumper wire is deteriorated by being crushed by a screw or the like passed through.

  In this case, if the overhang prevention annular body has a structure including a ring-shaped portion that rests on the surface of the annular portion of the stator core and a rising flange portion that rises from the outer periphery of the ring-shaped portion, Therefore, it is possible to prevent the coil or the jumper wire from protruding beyond the insulating coating layer to the annular portion side of the stator core.

  Further, the overhang prevention annular body is parallel to the ring-shaped portion from the ring-shaped portion that rests on the surface of the annular portion of the stator core, the rising flange portion that rises from the outer periphery of the ring-shaped portion, and the rising tip of the rising flange portion. If it has a structure with a pressing part that protrudes outward in the radial direction, in addition to the effect of preventing the coil or the connecting wire from protruding to the annular part of the stator core, An effect of preventing the coil and the jumper wire from floating can also be obtained.

  Alternatively, the overhang prevention annular body includes a ring-shaped portion that rests on the surface of the annular portion of the stator core and a rising flange portion that rises from the outer periphery of the ring-shaped portion, and the outer diameters of the annular portion and the rising flange portion are fixed to each other. The location of the holes is larger on the side where the ring-shaped portion is expanded than the position of the fixing hole and smaller than the inner diameter of the position where the coil is to be installed. If it is smaller than the position of the envelope on the outer side of the hole and larger than the position of the envelope on the inner side of each fixing hole, the required overhang of the coil and the crossover wire is performed with the minimum-sized overhang prevention annular body. The prevention effect can be obtained.

  Hereinafter, each example of the best mode for carrying out the stator for a magnet generator according to the present invention will be described in detail with reference to the drawings.

  FIGS. 1A and 1B and FIGS. 2A and 2B show an example of a stator for a magnet generator according to the present invention, and FIG. 1A shows the fixing for a magnet generator of this example. 1B is a front view of the stator for a magnet generator of this example, and FIGS. 2A and 2B are a longitudinal sectional view and a front view of an overhang prevention annular body used in this example. FIG. Note that portions corresponding to those in FIGS. 5A, 5B, and 6 described above are denoted by the same reference numerals.

  In the stator for a magnet generator of this example, the coil 4 and the crossover wire 5 are prevented from projecting over the surface of the annular portion 1a of the stator core 1 beyond the insulating coating layer 3 to the annular portion 1a side. The prevention annular body 7 is fixed by a screw, a rivet or the like passed through each fixing hole 6. The overhang prevention annular body 7 is made of an insulating member such as plastic or a metal. When the overhang prevention annular body 7 is made of metal, an insulating layer is provided on the surface in contact with the coil 4 and the crossover wire 5. That is, at least the surface that contacts the coil 4 and the connecting wire 5 needs to be formed of an insulating material in the overhang prevention annular body 7. The overhang prevention annular body 7 has a structure including a ring-shaped portion 7a that is placed on the surface of the annular portion 1a of the stator core 1 and a rising flange portion 7b that rises from the outer periphery of the ring-shaped portion 7a. The outer diameter of the overhang prevention annular body 7 is φD2 which is substantially equal to the inner diameter φD of the position where the coil 4 is to be installed. The ring-shaped portion 7 a is similarly provided with fixing holes 6 at the same positions as the fixing holes 6 provided in the annular portion 1 a of the stator core 1. H3 is the height of the flange portion 7b.

  In this way, the overhang prevention annular body 7 is provided on the surface of the annular portion 1a of the stator core 1 to prevent the coil 4 and the connecting wire 5 from projecting over the insulating coating layer 3 to the annular portion 1a side. Then, the rising flange portion 7a of the overhang prevention annular body 7 can prevent the coil 4 and the connecting wire 5 from overhanging the insulating coating layer 3 and projecting toward the annular portion 1a side of the stator core 1. According to the rising flange portion 7b of the overhang prevention annular body 7, it is possible to reliably prevent the coil 4 and the crossover wire 5 from overhanging the insulating coating layer 3 toward the annular portion 1a side of the stator core 1. 4 and the connecting wire 5 can be reliably prevented from being crushed by a screw or the like passed through the annular portion 1a of the stator core 1 and the insulation performance of the coil 4 or the connecting wire 5 being lowered.

  The overhang prevention annular body 7 has a structure including a ring-shaped portion 7a that rests on the surface of the annular portion 1a of the stator core 1 and a rising flange portion 7b that rises from the outer periphery of the ring-shaped portion 7a. With a simple structure, the overhang of the coil 4 and the crossover wire 5 can be reliably prevented.

  In the above example, the insulating coating layer 3 is not present at the position where the overhang prevention annular body 7 is installed in the annular portion 1a of the stator core 1, but the ring-shaped portion 7a of the overhang prevention annular body 7 is placed. The insulating coating layer 3 may be present up to a portion, and the ring-shaped portion 7 a of the overhang prevention annular body 7 may be overlaid on the insulating coating layer 3.

  3A and 3B are a longitudinal sectional view and a front view showing another example of an overhang prevention annular body used in the present invention. Note that portions corresponding to those in FIGS. 2A and 2B are denoted by the same reference numerals.

  The overhang prevention annular body 7 of this example is provided with a ring-shaped portion 7a that rests on the surface of the annular portion 1a of the stator core 1 and a rising flange portion 7b that rises from the outer periphery of the ring-shaped portion 7a. 2 (A) and 2 (B). The overhang prevention annular body 7 of this example includes a pressing portion 7c that protrudes radially outward in a direction parallel to the ring-shaped portion 7a from the rising tip of the rising flange portion 7b. The outer diameter of the rising flange portion 7b of the overhang prevention annular body 7 is φD2 which is substantially equal to the inner diameter of the position where the coil 4 is to be installed. The ring-shaped portion 7 a is similarly provided with fixing holes 6 at the same positions as the fixing holes 6 provided in the annular portion 1 a of the stator core 1.

  According to the overhang prevention annular body 7 having such a structure, in addition to the effect of preventing the riser flange portion 7b from overhanging the coil 4 and the connecting wire 5 to the annular portion 1a side of the stator core 1, the holding portion 7c allows the coil 4 to Moreover, the effect which prevents the floating of the crossover wire 5 can also be acquired.

  4A and 4B are a longitudinal sectional view and a front view showing still another example of the overhang prevention annular body used in the present invention. Note that portions corresponding to those in FIGS. 2A and 2B are denoted by the same reference numerals.

  The overhang prevention annular body 7 of this example is provided with a ring-shaped portion 7a that rests on the surface of the annular portion 1a of the stator core 1 and a rising flange portion 7b that rises from the outer periphery of the ring-shaped portion 7a. 2 (A) and 2 (B). In the overhang prevention annular body 7 of this example, the outer diameters of the annular portion 7a and the rising flange portion 7b are larger at the locations of the fixing holes 6 toward the side where the ring-shaped portion 7a is expanded from the position of the fixing holes 6. Further, the coil 4 is smaller than the inner diameter of the position where the coil 4 is to be installed, and is smaller than the position of the envelope outside the fixing holes 6 at the positions between the adjacent fixing holes 6 and inside the fixing holes 6. It is larger than the position of the envelope.

  According to the overhang prevention annular body 7 having such a structure, the necessary overhang prevention effect of the coil 4 and the connecting wire 5 can be obtained with the minimum necessary extension prevention annular body 7.

  3A and 3B and 4A and 4B are also made of the same material as the overhang prevention annular body 7 in FIGS. 2A and 2B. .

(A) (B) is the longitudinal cross-sectional view and front view of an example of the stator for magnet generators concerning this invention. (A) and (B) are the longitudinal cross-sectional view and front view of an overhang | projection prevention annular body used in this example. It is the longitudinal cross-sectional view and front view which show the other example of the overhang | projection prevention annular body used by this invention. It is the longitudinal cross-sectional view and front view which show the further another example of the overhang | projection prevention annular body used by this invention. It is the longitudinal cross-sectional view and front view of the conventional stator for magnet generators. FIG. 6 is an enlarged view of a P portion in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stator iron core 1a Annular part 1b Convex pole part 1A Side plate 3 Insulation coating layer 4 Coil 5 Crossover 6 Fixing hole 7 Overhang prevention annular body 7a Ring-shaped part 7b Standing collar part 7c Holding part

Claims (4)

Magnets in which coils are wound around the respective convex pole portions of the stator core, the convex pole portions projecting radially on the outer periphery of the annular portion, via an insulating coating layer, and the respective coils are connected by a jumper wire. In the stator for generators,
An overhang prevention annular body for preventing the coil and the connecting wire from projecting over the insulating coating layer to the annular portion side is fixed to the surface of the annular portion of the stator core. Magnet generator stator.   The overhang prevention annular body has a structure including a ring-shaped portion mounted on a surface of the annular portion of the stator core and a rising flange portion rising from an outer periphery of the ring-shaped portion. Item 2. The stator for a magnet generator according to Item 1.   The overhang prevention annular body includes a ring-shaped portion mounted on the surface of the annular portion of the stator core, a rising flange portion rising from the outer periphery of the ring-shaped portion, and a rising tip of the rising flange portion from the rising tip to the ring-shaped portion. The stator for a magnet generator according to claim 1, comprising a pressing portion that protrudes radially outward in a parallel direction. The overhang prevention annular body includes a ring-shaped portion that rests on the surface of the annular portion of the stator core, and a rising flange portion that rises from the outer periphery of the ring-shaped portion, and the outer diameter of the annular portion and the rising flange portion Each of the fixing holes is larger than the position of the fixing hole on the side where the ring-shaped portion is enlarged, and smaller than the inner diameter of the position where the coil is to be installed. 2. The magnet generator according to claim 1, wherein the position is between the positions of the envelopes outside the fixing holes and larger than the positions of the envelopes inside the fixing holes. For stator.

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