JP2007110771A - Stator of rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a stator of a rotary electric machine in which a natural frequency at a coil end can be regulated to an appropriate value and the degree of freedom can be ensured in coil design. <P>SOLUTION: In the stator of the rotary electric machine comprising stator coils 2 and 3 provided in the slot SL of a stator core 1 to project the coil end from the end of the stator core 1, a tape 11 exhibiting predetermined surface adhesiveness and arranged between opposing coil members to constitute coil ends of the stator coils 2 and 3, and an insulator 4 filling the gap between the opposing coil members are provided. Since the tape 11 is interposed between the opposing coil members, rigidity and a natural frequency at the coil end of the stator coil are regulated to a predetermined state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention includes a stator of a rotating electric machine, in particular, a stator core formed by laminating steel plates, and windings provided in slots of the stator core, and upper and lower portions protruding from both ends of the stator core. The present invention relates to a structure of a stator of a rotating electric machine that supports a coil end formed of a stator coil.

  In a conventional support structure at the stator coil end of a rotating electric machine, an upper coil and a lower coil wound around a stator core protrude from both ends of the iron core, and the upper coil and the lower coil are electrically coupled. Thus, the coil end portion is configured. In such a stator coil end support structure, when the rotating electrical machine is operated, the magnetic field generated by the armature current flowing through the upper and lower stator coils and the magnetic field generated by the field current flowing through the rotor coil are affected. An electromagnetic force having a frequency twice the generator operating frequency acts on the upper and lower stator coils and the stator core at the coil end, and vibrations are generated.

  In order to prevent such vibration from causing resonance, the coil end support member and the coil end support structure in which an insulator is injected between the upper and lower coils and between adjacent coils and integrally hardened are also subjected to the natural frequency of the part. Is designed to be removed from the electromagnetic excitation frequency (see, for example, Patent Document 1).

JP-T-2001-507920

  The support structure of the type that integrally cures the coil end part has higher rigidity than the coil end support structure of the type in which the coil is secured with an insulating tape or the like, so that its natural frequency is the electromagnetic excitation frequency. There was a possibility of approaching.

  In addition, the natural frequency is fixed at a fixed value at the stage of designing the coil size, and there is a problem that adjustment cannot be performed.

  The present invention has been made to solve the above-described problems, and provides a rotating electrical machine stator that can adjust the natural frequency of the coil end portion to an appropriate value and ensure the degree of freedom in coil design. With the goal.

  In the stator of the rotating electrical machine according to the present invention, an adhesion adjusting member having a predetermined surface adhesion that is disposed between the coil members that constitute the coil ends of the stator coil and face each other, and the plurality of coil members An insulating member filled in between is provided, and the adhesion adjusting member is interposed between the coil members facing each other so that the rigidity and natural frequency at the coil end of the stator coil are in a predetermined state. Is.

  According to the present invention, it is possible to obtain a stator of a rotating electrical machine that can adjust the natural frequency of the coil end portion to an appropriate value and can secure the degree of freedom in coil design.

Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. 1 is a side view showing a support structure of an end portion of a rotating electrical machine stator coil according to Embodiment 1. FIG. 2 is a cross-sectional view taken along line II-II in FIG.

  In FIG. 1 which shows the support structure of the rotating electrical machine stator coil end part in Embodiment 1 by this invention, the stator core 1 comprised by laminating | stacking magnetic plates, such as a steel plate, on the stator ST of a rotating electrical machine. The upper stator coil 2 and the lower stator coil 3 wound and provided in the slot SL of the stator core 1 protrude from both ends of the stator core 1 to electrically connect the upper coil 2 and the lower coil 3. Thus, the coil end portion 6 is configured. The coil member forming the coil end 6 of the upper and lower stator coils 2 and 3 is sandwiched between the holding plate 5 and the coil end support member 7, and liquid is formed in the space between the coil members of the upper and lower stator coils 2 and 3 formed thereby. The insulator 4 is poured and cured at room temperature, so that the coil end 6 is integrated and the rigidity is enhanced.

As shown in FIG. 2, the stator coils 2 and 3 are arranged in a circumferential shape sandwiched between the pressing plate 5 and the support member 7, and when the liquid insulator 4 is poured further, the stator coil 2. , 3 to insert a work block (not shown) from the end to prevent the liquid insulator 4 from spilling. When the poured liquid insulator 4 is cured, the stator ST is rotated to a position where the portion where the liquid insulator 4 has not yet been poured is down. In this manner, the liquid insulator 4 is poured into the space between the stator coils 2 and 3 around the entire circumference.
The insulator 4 is a mixture made of, for example, an epoxy resin and glass fiber. Further, as shown in FIG. 2, a tape 11 is wound around the upper stator coil 2 and the lower stator coil 3 to prevent the adhesion between the coil and the insulator 4 to some extent, and the coils 2 and 3 and the insulator are wound. The adhesiveness with 4 is adjusted.
The tape 11 is an insulating material having a predetermined surface adhesion such as containing silicon, Teflon (registered trademark), or the like, which has extremely low adhesion to a substance. This tape 11 has a value adjusted at the time of designing the rigidity and natural frequency of the coil end 6 by its predetermined surface adhesion.
The coil members forming the coil ends 6 of the upper and lower stator coils 2 and 3 are such that at least a part of the insulator 4 is coupled to the coil members of the upper and lower stator coils 2 and 3 via the tape 11. It is fixed by.

As described above, according to the first embodiment of the present invention, since the tape 11 is wound around the coil members of the stator coils 2 and 3, adhesion between this portion and the insulator 4 is hindered, Accordingly, the stator coils 2 and 3 and the insulator 4 do not vibrate integrally, and as a result, the coil end 6 is compared with the case where the stator coils 2 and 3 and the insulator 4 are bonded in a fixed state. Thus, the natural frequency can be lowered, and the rigidity and natural frequency at the coil ends 6 of the stator coils 2 and 3 are brought into a predetermined state adjusted at the time of design.
Further, since the bonding area is changed by changing the area where the tape 11 is wound, the rigidity and natural frequency of the coil end 6 can be adjusted at the time of design. Therefore, compared with the conventional structure, it is possible to more reliably avoid the dangerous frequency range and provide a highly reliable rotating electrical machine.
Furthermore, by determining the area around which the tape 11 is wound in advance, it becomes possible to adjust the natural frequency of the coil end 6 part at the design stage, thereby adjusting the natural frequency after production. For example, there is no need to add various reinforcements to the coil end 6 or to install a weight, and the adjustment work after the production can be performed with the minimum work such as the adjustment of the production error. In other words, it is possible to reduce costs such as adjustment costs spent after production.

  Here, the coil 11 may be wound only by the coil member of only the upper stator coil 2 or the coil member of only the lower stator coil 3. Further, instead of the tape 11 wound around the stator coils 2 and 3, a paint may be applied to form a coating film, or a sheet-like material may be wound.

(1A) According to the first embodiment of the present invention, a stator core 1, a stator coil 2 provided in a slot SL of the stator core 1 and projecting a coil end 6 from an end of the stator core 1, 3, and provided with a first stator coil 2 and a second stator coil 3 that are adjacent to each other in the radial direction of the stator ST as the stator coils 2 and 3, the first stator coil 2 and the second stator coil 3 that constitute the coil ends 6 and are opposed to each other with an adhesion adjusting member made of a tape 11 having a predetermined surface adhesion provided on at least one surface of the coil members facing each other. An insulating member made of an insulator 4 filled between the coil members, and an adhesive adjusting member made of the tape 11 or the like interposed between the coil members facing each other. The coil members facing each other so that at least a part of the insulating member made of the rim 4 is integrated with the coil member via an adhesion adjusting member made of the tape 11 or the like. Since the rigidity and the natural frequency at the coil ends 6 of the stator coils 2 and 3 are set in a predetermined state by filling in between, at least one surface of the coil members facing each other in the radial direction of the stator By providing the adhesion adjusting member, it is possible to adjust the natural frequency of the coil end portion to an appropriate value, and to obtain a stator of a rotating electrical machine that can secure a degree of freedom in coil design.

(1B) According to the first embodiment of the present invention, in the configuration of the item (1A), the adhesion adjusting member includes the coil ends 6 of the first stator coil 2 and the second stator coil 3. Since it is made of an insulating tape composed of a tape 11 having a predetermined surface adhesiveness wound around at least one of the surfaces of the coil members that are opposed to each other, they face each other in the radial direction of the stator By providing an adhesion adjusting member made of insulating tape on at least one surface of the coil member, the natural frequency of the coil end can be adjusted to an appropriate value, and the degree of freedom in coil design can be secured. A stator can be obtained.

(1C) According to the first embodiment of the present invention, in the configuration of the item (1A), the adhesion adjusting member includes the coil ends 6 of the first stator coil 2 and the second stator coil 3. Since it is configured by an insulating sheet having a predetermined surface adhesion wound around at least one surface of the coil members that are configured and opposed to each other, at least one of the coil members that are opposed to each other in the radial direction of the stator By providing an adhesion adjusting member composed of an insulating sheet on the surface, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator for a rotating electrical machine that can ensure the freedom of coil design is obtained. Can do.

(1D) According to the first embodiment of the present invention, in the configuration of the item (1A), the adhesion adjusting member constitutes the coil end 6 of the first stator coil 2 and the second stator coil. Since the insulating coating film having a predetermined surface adhesion is formed on at least one surface of the coil members facing each other, at least one of the coil members facing each other in the radial direction of the stator By providing an adhesion adjusting member composed of an insulating coating on the surface, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator for a rotating electrical machine that can ensure the freedom of coil design is obtained. be able to.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a side view showing a support structure of the end portion of the rotating electrical machine stator coil according to the second embodiment. 4 is a cross-sectional view taken along line IV-IV in FIG.
In the second embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in the first embodiment described above, and exhibits the same operation. In the drawings, the same reference numerals indicate the same or corresponding parts.

  In the first embodiment, the tape 11 is wound directly around the upper stator coil 2 and the lower stator coil 3. However, the number of the upper and lower stator coils 2 and 3 is large, and there is a problem in workability. Further, when the tape 11 is wound around the upper and lower stator coils 2 and 3, the coil end portion 6 has a problem that the rigidity is reduced only in the axial direction, and the direction in which the rigidity is lowered cannot be selected.

Therefore, in the second embodiment, as shown in FIG. 3 and FIG. 4, an insulating block 12 a in which a tape 11 is wound around the surface between the coil members of the upper stator coil 2 and the lower stator coil 3, 12b is inserted, and the insulating blocks 12a and 12b are fixed to the coil members of the stator coils 2 and 3 by, for example, a string of glass base material.
Similarly to the first embodiment, the upper and lower stator coils 2 formed by sandwiching the coil member forming the coil ends 6 of the upper and lower stator coils 2 and 3 between the holding plate 5 and the coil end support member 7. , 3 is poured into the space between the coil members 3 and cured at room temperature, so that the coil end 6 is integrated and the rigidity is enhanced.
The insulating blocks 12a and 12b have coil ends between the coil members of the upper and lower stator coils 2 and 3 so that at least a part of the insulator 4 is coupled to the coil members of the upper and lower stator coils 2 and 3 via the tape 11. A part of 6 is fixed by an insulator 4.
Thus, by inserting the insulating blocks 12a and 12b, the work of winding the tape 11 around the stator coils 2 and 3 is eliminated, and workability is improved. Further, by inserting between the upper stator coil 2 and the lower stator coil 3, the tape 11 provided on the peripheral surfaces of the insulating blocks 12a and 12b reduces the adhesiveness in the radial direction and the circumferential direction, and the coil ends The rigidity in the radial direction and the circumferential direction can be lowered while the rigidity reduction in the axial direction of the portion 6 remains slight.

Here, the number of the insulating blocks 12 a and 12 b is two in this embodiment, but may be one or three in the axial direction of the coil end portion 6. Moreover, the number beyond it may be sufficient. Moreover, it is not necessary to insert between all the upper and lower stator coils 2 and 3, for example, every other one.
Then, instead of the tape 11 wound around the surfaces of the insulating blocks 12a and 12b, a paint may be applied to the surfaces of the insulating blocks 12a and 12b to form a coating film, and a sheet is formed on the surfaces of the insulating blocks 12a and 12b. A shaped material may be wound.

(2A) According to the second embodiment of the present invention, the stator core 1, the stator coil 2, which is provided in the slot SL of the stator core 1 and projects the coil end 6 from the end of the stator core 1, 3 and provided with the first stator coil 2 and the second stator coil 3 that are adjacent to each other in the radial direction of the stator ST as the stator coil, the first stator coil 2 and the second stator coil 3 are provided. It comprises insulating blocks 12a and 12b which are provided between the coil members which constitute the coil end 6 of the two stator coils 3 and which are provided between the opposing coil members and which are provided with an adhesion adjusting member made of tape 11 or the like having a predetermined surface adhesion. A solid insertion member and an insulating member made of an insulator 4 filled between the coil members facing each other are provided, and the tape 11 or the like is interposed between the coil members facing each other. Insulation made of the insulator 4 so that at least a part of the insulation member made of the insulator 4 is integrated with the coil member via the adhesion adjustment member made of the tape 11 or the like with the adhesion adjustment member made of Since the members are filled between the coil members facing each other, the rigidity and natural frequency at the coil ends 6 of the stator coils 2 and 3 are set to predetermined states, so that they face each other in the radial direction of the stator. By providing a solid insertion member with an adhesion adjusting member provided between the coil members, the natural frequency of the coil end can be adjusted to an appropriate value, and the degree of freedom in coil design can be secured. A stator can be obtained.

(2B) According to the second embodiment of the present invention, in the configuration of the item (2A), the adhesion adjusting member is a predetermined surface adhesion wound around a solid insertion member made of the insulating blocks 12a and 12b. Since it is made of an insulating tape made of the tape 11 having the property, a solid state in which an adhesion adjusting member made of an insulating tape is provided between the coil members facing each other in the radial direction of the stator. By providing the insertion member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can ensure the degree of freedom in coil design can be obtained.

(2C) According to the second embodiment of the present invention, in the configuration according to the item (2A), the front adhesion adjusting member is a predetermined surface wound around a solid insertion member made of the insulating blocks 12a and 12b. Since it is made of an insulating sheet having adhesiveness, a solid interposing member provided with an adhesion adjusting member made of an insulating sheet between coil members facing each other in the radial direction of the stator By providing the above, it is possible to adjust the natural frequency of the coil end to an appropriate value, and to obtain a stator of a rotating electrical machine that can secure the degree of freedom in coil design.

(2D) According to the second embodiment of the present invention, in the configuration in the item (2A), the front adhesion adjusting member is a predetermined formed on the surface of the solid insertion member made of the insulating blocks 12a and 12b. Since the insulating coating film has a surface adhesive property, an adhesion adjusting member formed of an insulating coating film is provided between the coil members facing each other in the radial direction of the stator. By providing the shape insertion member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can secure a degree of freedom in coil design can be obtained.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a side view showing the support structure of the end portion of the rotating electrical machine stator coil according to the third embodiment. FIG. 6A is a cross-sectional view taken along line VI-VI in FIG. FIG. 6B is an enlarged cross-sectional view showing the VI portion of FIG.
In the third embodiment, the configuration other than the specific configuration described here has the same configuration as the configuration in either the first embodiment or the second embodiment described above, and has the same function. It plays. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the second embodiment, the insulating blocks 12a and 12b each provided with the adhesion adjusting member made of the tape 11 having a predetermined surface adhesion between the coil members of the upper stator coil 2 and the lower stator coil 3 are provided. Although the inserted example is shown, in the third embodiment, instead of the insulating blocks 12a and 12b, the annular insulating rings 16a and 16b each having an adhesion adjusting member made of a tape 11 or the like having predetermined surface adhesion are provided on the surface. 16b is inserted.
Similarly to the first embodiment, the upper and lower stator coils 2 formed by sandwiching the coil member forming the coil ends 6 of the upper and lower stator coils 2 and 3 between the holding plate 5 and the coil end support member 7. , 3 is poured into the space between the coil members 3 and cured at room temperature, so that the coil end 6 is integrated and the rigidity is enhanced.
The insulating rings 16a and 16b have coil ends between the coil members of the upper and lower stator coils 2 and 3 so that at least a part of the insulator 4 is coupled to the coil members of the upper and lower stator coils 2 and 3 via the tape 11. A part of 6 is fixed by an insulator 4.

The number of insulating blocks 12a and 12b in the second embodiment is required as many as the number between the coils. However, as shown in FIG. 5, the annular rings 16a and 16b (only the annular ring 16b is shown in FIG. 6) have the entire circumference. Since this is a circuit, the number of parts is clearly reduced compared to the insulating blocks 12a and 12b.
The insulating rings 16a and 16b are fixed to the stator coils 2 and 3 by, for example, a glass base string.

  Thereby, as above-mentioned, the number of parts can be reduced significantly, workability | operativity improves and manufacturing cost is reduced.

Here, the number of the insulating rings 16 a and 16 b may be one or three in the axial direction of the coil end portion 6. Moreover, the number beyond it may be sufficient.
Then, instead of the tape 11 wound around the surfaces of the insulating rings 16a and 16b, a coating may be formed by applying a paint to the surfaces of the insulating rings 16a and 16b, and a sheet is formed on the surfaces of the insulating rings 16a and 16b. A shaped material may be wound.

(3A) According to the third embodiment of the present invention, the stator core 1, the stator coil 2, which is provided in the slot SL of the stator core 1 and projects the coil end 6 from the end of the stator core 1, 3, and provided with a first stator coil 2 and a second stator coil 3 that are adjacent to each other in the radial direction of the stator ST as the stator coils 2 and 3, the first stator coil An annular ring 16a provided on the surface with an adhesion adjusting member composed of a tape 11 having a predetermined surface adhesion provided between the coil members 6 constituting the coil ends 6 of the second and second stator coils 3 and facing each other. , 16b and an insulating member made of an insulator 4 filled between the coil members facing each other, and the portion between the coil members facing each other is provided. At least a part of the insulating member made of the insulator 4 is interposed via the adhesion adjusting member made of the tape 11 having the predetermined surface adhesiveness with the adhesion adjusting member made of the tape 11 having the surface adhesiveness interposed therebetween. By filling the insulating member between the coil members facing each other so as to be integrated with the coil member, the rigidity and natural frequency at the coil end 6 of the stator coils 2 and 3 are set to a predetermined state. Therefore, by providing an annular solid insertion member with an adhesion adjusting member provided between the coil members facing each other in the radial direction of the stator, the natural frequency of the coil end is set to an appropriate value. It is possible to obtain a stator of a rotating electric machine that can be adjusted and can secure a degree of freedom in coil design.

(3B) According to the third embodiment of the present invention, in the configuration according to the item (3A), the adhesion adjusting member is wound around a predetermined annular solid insertion member composed of the annular rings 16a and 16b. Since it is made of an insulating tape made of the tape 11 having surface adhesiveness, an adhesion adjusting member made of an insulating tape is provided on the surface between coil members facing each other in the radial direction of the stator. By providing the annular solid insertion member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can secure the degree of freedom in coil design can be obtained.

(3C) According to the third embodiment of the present invention, in the configuration of the item (3A), the adhesion adjusting member is a predetermined surface adhesion wound around a solid insertion member composed of the annular rings 16a and 16b. Since it is made of an insulating sheet having the property, an annular solid interposition having an adhesion adjusting member made of an insulating sheet provided between the coil members facing each other in the radial direction of the stator. By providing the member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of the rotating electrical machine that can secure the degree of freedom in coil design can be obtained.

(3D) According to the third embodiment of the present invention, in the configuration in the item (3A), the front adhesion adjusting member is formed on the surface of the solid insertion member composed of the annular rings 16a and 16b. An annular coating provided on the surface with an adhesion adjusting member composed of an insulating coating between coil members facing each other in the radial direction of the stator. By providing this solid insertion member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can ensure the degree of freedom in coil design can be obtained.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a side view showing a support structure of the end portion of the rotating electrical machine stator coil according to the fourth embodiment. FIG. 8 is a perspective view from the direction VIII in FIG.
In the fourth embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to third embodiments described above, and is similar. It has an effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the third embodiment, the rigidity in the radial direction and the circumferential direction is mainly reduced. However, in the fourth embodiment, the stator coil 2 is formed and the coil end 6 of the stator coil 2 is formed and fixed. Insulating blocks 13a, 13b, 13c, in which an adhesion adjusting member made of a tape 11 having a predetermined surface adhesive property is wound between the stator coil members 2a, 2b, 2c adjacent to each other in the circumferential direction of the child ST. By inserting 13d, the rigidity in the circumferential direction mainly decreases. Further, an adhesion adjusting member made of a tape 11 having a predetermined surface adhesive property on the surface is also formed between the stator coil members 3a, 3b, 3c that constitute the stator coil 3 and are adjacent to each other in the circumferential direction of the stator ST. The wound insulating blocks 13a, 13b, 13c, and 13d are inserted, and the configuration is the same as that of the stator coil 2.
Similarly to the first embodiment, the upper and lower stator coils 2 formed by sandwiching the coil member forming the coil ends 6 of the upper and lower stator coils 2 and 3 between the holding plate 5 and the coil end support member 7. , 3 is poured into the space between the coil members 2a, 2b, 2c, 3a, 3b, 3c and cured at room temperature, so that the coil end 6 is integrated and the rigidity is increased. ing. Here, the holding plate 5 is omitted in FIG.
Insulating blocks 13a, 13b, 13c, and 13d are formed such that at least a part of insulator 4 is integrated with coil members 2a, 2b, 2c, 3a, 3b, and 3c of upper and lower stator coils 2 and 3 via tape 11. As described above, the coil members 2 a, 2 b, 2 c, 3 a, 3 b, 3 c of the upper and lower stator coils 2, 3 are fixed by an insulator 4 as a part of the coil end 6.
Thereby, there is an effect that a change in rigidity in the radial direction can be suppressed to be small.

Here, the number of the insulating blocks 13a, 13b, 13c, and 13d is shown as two in the axial direction of the coil end 6 in this embodiment, but even one in the axial direction of the coil end 6 may be used. It may be three. Moreover, the number beyond it may be sufficient. Further, it may not be inserted between all adjacent coils, for example, every other coil may be used.
Then, instead of the tape 11 wound around the surfaces of the insulating blocks 13a, 13b, 13c, 13d, a coating may be formed by applying a paint to the surfaces of the insulating blocks 13a, 13b, 13c, 13d. A sheet-like material may be wound around the surfaces of the blocks 13a, 13b, 13c, and 13d.

(4A) According to the fourth embodiment of the present invention, the stator core 1, the stator coil 2, which is provided in the slot SL of the stator core 1, and projects the coil end 6 from the end of the stator core 1. The first stator coil 2 and the second stator coil 3 that are adjacent to each other in the radial direction of the stator ST as the stator coils 2 and 3, and the first stator coil 2 and the second stator coil 2. Of the first stator coil 2 and the second stator coil 3, and a plurality of stator coil members 2a and 2b adjacent to each other in the circumferential direction of the stator ST. , 2c, 3a, 3b, 3c, the stator coil members 2a, 2b, 2c adjacent in the circumferential direction of the stator ST and between the stator coil members 3a, 3b, 3c, respectively. Establishment Solid interposing members made of insulating blocks 13a, 13b, 13c, 13d provided on the surface with an adhesion adjusting member made of tape 11 or the like having a predetermined surface adhesive property and the coil members 2a, 2b, 2c facing each other. , 3a, 3b, 3c are provided between the coil members 2a, 2b, 2c facing each other and between the coil members 3a, 3b, 3c. At least a part of the insulating member made of the insulator 4 is made integral with the coil member via the adhesion adjusting member made of the tape 11 or the like, with an adhesion adjusting member made of the tape 11 or the like having the surface adhesiveness interposed therebetween. In this way, the insulation member is filled between the coil members facing each other so that the rigidity and natural vibration at the coil end 6 of the stator coil are reduced. Since the number is set in a predetermined state, the natural frequency of the coil end is provided by providing a solid insertion member having an adhesion adjusting member on the surface between the coil members facing each other in the circumferential direction of the stator. Can be adjusted to an appropriate value, and a stator for a rotating electrical machine that can secure a degree of freedom in coil design can be obtained.

(4B) According to the fourth embodiment of the present invention, in the configuration in the item (4A), the adhesion adjusting member is wound around a solid insertion member composed of the insulating blocks 13a, 13b, 13c, and 13d. Since the insulating tape is composed of the tape 11 having the predetermined surface adhesiveness, the adhesion adjusting member composed of the insulating tape is provided between the coil members facing each other in the circumferential direction of the stator. By providing the provided solid insertion member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can secure the degree of freedom in coil design can be obtained.

(4C) According to the fourth embodiment of the present invention, in the configuration in the item (4A), the front adhesion adjusting member is wound around the solid insertion member made of the insulating blocks 13a, 13b, 13c, 13d. In addition, since it is made of an insulating sheet having a predetermined surface adhesiveness, an adhesive adjustment member made of an insulating sheet is provided on the surface between coil members facing each other in the circumferential direction of the stator. By providing the shape insertion member, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can secure a degree of freedom in coil design can be obtained.

(4D) According to the fourth embodiment of the present invention, in the configuration of the item (4A), the front adhesion adjusting member is placed on the surface of the solid insertion member composed of the insulating blocks 13a, 13b, 13c, 13d. Since the insulating coating film having a predetermined surface adhesiveness is formed, the surface of the adhesion adjusting member including the insulating coating film between the coil members facing each other in the circumferential direction of the stator By providing the solid insertion member provided on the rotating electrical machine, the natural frequency of the coil end can be adjusted to an appropriate value, and a stator of a rotating electrical machine that can secure the degree of freedom in coil design can be obtained.

Embodiment 5. FIG.
A fifth embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a side view showing the support structure of the rotating electric machine stator coil end portion in the fifth embodiment. FIG. 10 is a perspective view seen from the X direction in FIG.
In the fifth embodiment, the configuration other than the specific configuration described here has the same configuration contents as those in the first to fourth embodiments described above, and exhibits the same operation. Is. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the fifth embodiment, the coil members 2a, 2b, 2c, 3a, 3b, 3c forming the coil ends 6 of the upper stator coil 2 and the lower stator coil 3 are bonded to the coil and the insulator 4. Is wound on the surface between the coil members 2a, 2b, 2c and the coil members 3a, 3b, 3c forming the coil ends 6 of the upper stator coil 2 and the lower stator coil 3. Insulating blocks 12a and 12b wound with an adhesion adjusting member made of tape 11 having a predetermined surface adhesiveness are inserted to form coil ends 6 of upper stator coil 2 and lower stator coil 3 to surround stator ST. Between the stator coils 2a and 2b adjacent to each other in the direction, between 2b and 2c, between 3a and 3b, and between 3b and 3c, insulating blocks 13a, 1 wound with tape 11 on the surface b, 13c, in which the insertion of the 13d.
Similarly to the first embodiment, the upper and lower stator coils 2 formed by sandwiching the coil member forming the coil ends 6 of the upper and lower stator coils 2 and 3 between the holding plate 5 and the coil end support member 7. The coil end 6 is integrated by pouring the liquid insulator 4 into the space between the coil members 3 and 3 and curing it at room temperature. Here, in FIG. 10, the holding plate 5 is omitted.
The insulating blocks 12a and 12b and the insulating blocks 13a, 13b, 13c, and 13d are vertically fixed stator coils such that at least a part of the insulator 4 is joined to the coil members of the vertically fixed stator coils 2 and 3 via the tape 11. A part of the coil end 6 is fixed by an insulator 4 between the two and three coil members.

Thereby, in the coil end 6, the rigidity in the radial direction, the circumferential direction, and the axial direction can be reduced.
Therefore, compared to the first to fourth embodiments, it is possible to adjust the three-dimensional natural vibrations in the radial direction, the circumferential direction, and the axial direction, and it is possible to take fine vibration countermeasures.

  Here, the method to be applied is, for example, a method in which the tape 11 is wound around the upper stator coil 2 and the lower stator coil 3, and an insulating block 12a, 12b between the upper stator coil 2 and the lower stator coil 3. Two methods or three or more methods may be selected and combined, such as a combination of only methods for inserting.

Then, instead of the tape 11 wound around the surfaces of the insulating blocks 13a, 13b, 13c, 13d, a coating may be formed by applying a paint to the surfaces of the insulating blocks 13a, 13b, 13c, 13d. A sheet-like material may be wound around the surfaces of the blocks 13a, 13b, 13c, and 13d.
Further, instead of the tape 11 wound around the stator coils 2 and 3, a paint may be applied to form a coating film, or a sheet-like material may be wound.

(5A) According to the fifth embodiment of the present invention, the stator core 1, the stator coil 2 provided in the slot SL of the stator core 1 and projecting the coil end 6 from the end of the stator core 1, The first stator coil 2 and the second stator coil 3 that are adjacent to each other in the radial direction of the stator ST as the stator coils 2 and 3, and the first stator coil 2 and the second stator coil 2. Of the first stator coil 2 and the second stator coil 3, and a plurality of stator coil members 2a and 2b adjacent to each other in the circumferential direction of the stator ST. , 2c, 3a, 3b, and 3c, the coil ends 6 of the first stator coil 2 and the second stator coil 3 are formed between the coil members 2a and 3a facing each other, 2b, Between 3b, 2c and 3c Between the stator coil members 2a and 2b adjacent in the circumferential direction of the stator ST, between 2b and 2c, between 3a and 3b, and between 3b and 3c, respectively, and has a predetermined surface adhesion. A solid insertion member made of insulating blocks 13a, 13b, 13c, 13d provided on the surface with an adhesion adjusting member made of tape 11 or the like, and an insulating member made of insulator 4 filled between the plurality of coil members; Insulating the coil members 2a, 2b, 2c facing each other and interposing an adhesion adjusting member made of the tape 11 having the predetermined surface adhesion between the coil members 3a, 3b, 3c. The insulating member 4 made of the insulator 4 is integrated with the coil member via an adhesion adjusting member made of the tape 11 or the like. By filling members between the coil members facing each other, the rigidity and natural frequency at the coil end 6 of the stator coil are set in a predetermined state, so that they face each other in the radial direction and the circumferential direction of the stator. By providing a solid insertion member with an adhesion adjusting member provided between the coil members, the natural frequency of the coil end can be adjusted to an appropriate value, and the degree of freedom in coil design can be secured. A stator can be obtained.
(5B) According to Embodiment 5 of the present invention, in the configuration according to item (5A), the adhesion adjusting member provided on the solid insertion member is a predetermined surface wound around the solid insertion member Since it is made of an insulating tape having adhesiveness, a coil is provided by providing a solid insertion member provided with an adhesion adjusting member made of an insulating tape on the surface between coil members facing each other. It is possible to obtain a stator of a rotating electrical machine that can adjust the natural frequency of the end portion to an appropriate value and can secure a degree of freedom in coil design.

(5C) According to the fifth embodiment of the present invention, in the configuration according to the item (5A), the adhesion adjusting member provided on the solid insertion member is a predetermined surface wound around the solid insertion member. Since it is made of an insulating sheet having adhesiveness, the natural frequency of the coil end is appropriately set by providing a solid insertion member having an adhesion adjusting member made of an insulating sheet on the surface. A stator for a rotating electrical machine that can be adjusted to a suitable value and can secure a degree of freedom in coil design can be obtained.

(5D) According to the fifth embodiment of the present invention, in the configuration in the item (5A), the adhesion adjusting member provided on the solid insertion member is a predetermined formed on the surface of the solid insertion member. Since it is made of an insulating coating film having a surface adhesive property, it is possible to obtain a unique coil end by providing a solid insertion member having an adhesion adjusting member made of an insulating coating film on the surface. It is possible to obtain a stator of a rotating electric machine that can adjust the frequency to an appropriate value and can secure a degree of freedom in coil design.

  In the embodiment according to the present invention, configurations shown in the following items (1) to (5) are shown.

(1) An upper and lower stator coil 2 including a stator core 1 formed by laminating steel plates and windings provided in slots SL of the stator core 1 and protruding from both ends of the stator core 1. In the coil end support structure in which the insulator 4 is injected between the coils 2 and 3 and hardened, the upper and lower stator coils 2 and 3 have an insulating surface. By winding the tape 11 having low adhesiveness and adjusting the adhesion rate between the insulator 4 to be injected and cured between the coils 2 and 3 and the coils 2 and 3, the rigidity and natural frequency of the coil end 6 are reduced. A stator of a rotating electric machine characterized by being changed.

(2) Upper and lower stator coils 2 each including a stator core 1 formed by stacking steel plates and windings provided in slots SL of the stator core 1 and projecting from both ends of the stator core 1. In the coil end support structure in which the insulator 4 is injected and cured between the coils 2 and 3, the surface between the upper and lower stator coils 2 and 3 is supported. Between the insulator 4 and the coils 2 and 3 to be inserted and hardened between the coils 2 and 3 by inserting blocks 12a and 12b made of an insulator around which the tape 11 having an insulating property and low surface adhesion is wound. A stator for a rotating electrical machine, wherein the rigidity and natural frequency of the coil end 6 are changed by adjusting the adhesion rate of the rotating electrical machine.

(3) The stator of the rotating electric machine according to (1), wherein the blocks made of an insulator are annular rings 16a and 16b.

(4) A stator core 1 formed by laminating steel plates and a winding provided in a slot SL of the stator core 1, which constitute coils 2 and 3 and protrude from both end portions of the stator core 1. In the structure that supports the coil end 6 formed by the adjacent stator coil members 2a, 2b, 2c, 3a, 3b, 3c, the insulator 4 is provided between the coil members 2a, 2b, 2c, 3a, 3b, 3c. In the coil end support structure in which is injected and hardened, a tape 11 having an insulating and low surface adhesion property is wound between the adjacent stator coil members 2a, 2b, 2c, 3a, 3b, 3c. Insulator 4 and coil members 2a, 2b, 2c to be inserted and cured between the coil members 2a, 2b, 2c, 3a, 3b, 3c are inserted. , 3a, 3b, 3c The stator of the rotary electric machine by adjusting the adhesiveness, characterized by changing the stiffness and natural frequency of the coil end 6 between.

(5) A stator core 1 formed by laminating steel plates and a winding provided in the slot SL of the stator core 1 are provided, and coils 2 and 3 are formed and project from both end portions of the stator core 1 The upper and lower stator coils 2 and 3 and the coil end 2 formed of the adjacent stator coil members 2a, 2b, 2c, 3a, 3b and 3c are supported, and the coil member 2a constituting the coils 2 and 3 is supported. , 2b, 2c, 3a, 3b, 3c, in the coil end support structure in which the insulator 4 is injected and cured, the coil members 2a, 2b, 2c, 3a, 3b constituting the upper and lower stator coils 2, 3 An insulating tape 11 having a low surface adhesiveness is wound around 3c, and further, the tape 11 between the coil members 2a, 2b, 2c, 3a, 3b, and 3c constituting the stator coils 2 and 3 and between adjacent ones thereof. Insulated material The insulators 4 and the coils 2 and 3 to be inserted and cured between the coil members 2a, 2b, 2c, 3a, 3b and 3c constituting the coils 2 and 3 are inserted into the blocks 13a, 13b, 13c and 13d. Item (1), wherein the rigidity and natural frequency of the coil end 6 are changed by adjusting the adhesion between the coil members 2a, 2b, 2c, 3a, 3b, and 3c constituting To the stator of the rotating electric machine according to (4).

  According to the embodiment of the present invention, since the tape having low surface adhesiveness is wound around the upper and lower stator coils protruding from both end portions of the stator core, the rigidity and natural frequency of the coil end portion 6 are reduced. A rotary electric machine with high reliability that can be adjusted is obtained, and eigenvalue design of the coil end can be realized regardless of the coil size.

It is a side view which shows the support structure of the rotary electric machine stator coil end part in Embodiment 1 by this invention. It is sectional drawing in the II-II line of FIG. It is a side view which shows the support structure of the rotary electric machine stator coil end part in Embodiment 2 by this invention. It is sectional drawing in the IV-IV line of FIG. It is a side view which shows the support structure of the rotary electric machine stator coil end part in Embodiment 3 by this invention. It is sectional drawing in the VI-VI line of FIG. It is a side view which shows the support structure of the rotary electric machine stator coil end part in Embodiment 4 by this invention. It is the perspective view seen from the VIII direction in FIG. It is a side view which shows the support structure of the rotary electric machine stator coil end part in Embodiment 5 by this invention. It is the perspective view seen from the X direction in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stator iron core, 2 Upper stator coil, 2a-2c coil member, 3 Lower stator coil, 3a-3c coil member, 4 Insulator, 5 Holding plate, 6 Coil end part, 7 Coil end support member, 11 Insulating tape as an adhesion adjusting member, 12a, 12b, 13a to 13d insulating block, 16a, 16b insulating ring.

Claims (11)

  A stator core, comprising a stator coil provided in a slot of the stator core and having a coil end projecting from an end of the stator core, the coil members constituting the coil end of the stator coil and facing each other An adhesion adjusting member having a predetermined surface adhesion disposed between each other and an insulating member filled between the plurality of coil members are provided, and the adhesion adjusting member is disposed between the coil members facing each other. A stator of a rotating electrical machine characterized in that the rigidity and natural frequency at a coil end of the stator coil are brought into a predetermined state by being interposed.   A stator core, and a stator coil provided in a slot of the stator core and having a coil end projecting from an end of the stator core, the first and second adjacent to each other in the radial direction of the stator as the stator coil Adhesion adjustment having predetermined surface adhesion provided on at least one surface of coil members constituting the coil ends of the first and second stator coils and facing each other in the case where two stator coils are provided A member and an insulating member filled between the coil members facing each other, and interposing the adhesion adjusting member between the coil members facing each other, thereby providing rigidity and inherentness at the coil end of the stator coil. A stator of a rotating electric machine characterized by having a predetermined frequency.   A stator core, and a stator coil provided in a slot of the stator core and having a coil end projecting from an end of the stator core, the first and second adjacent to each other in the radial direction of the stator as the stator coil In the case where two stator coils are provided, an adhesion adjusting member having a predetermined surface adhesiveness is provided between the coil members that constitute the coil ends of the first and second stator coils and that face each other. By providing the solid insertion member provided and the insulating member filled between the coil members facing each other, and interposing the adhesion adjusting member between the coil members facing each other, the stator coil A stator of a rotating electrical machine characterized by having a predetermined state of rigidity and natural frequency at a coil end.   The stator for a rotating electrical machine according to claim 3, wherein the solid insertion member provided with the adhesion adjusting member having a predetermined surface adhesiveness on the surface is annular.   A stator core, and a stator coil provided in a slot of the stator core and having a coil end projecting from an end of the stator core, the first and second adjacent to each other in the radial direction of the stator as the stator coil Two stator coils and a plurality of stator coil members that constitute coil ends of the first and second stator coils and are adjacent to each other in the circumferential direction of the stator. A solid insertion member provided on the surface with an adhesion adjusting member having a predetermined surface adhesion between adjacent coil members adjacent to each other, and an insulating member filled between the coil members facing each other are provided. Stiffness and natural frequency at the coil end of the stator coil are set to predetermined states by interposing the adhesion adjusting member between the coil members facing each other. The stator of the rotating electric machine, characterized.   The adhesion adjusting member provided on the coil member is composed of an insulating tape having a predetermined surface adhesive property that is wound around at least one of the coil members that constitute the coil end of the stator coil and face each other. The stator for a rotating electrical machine according to claim 2.   The adhesion adjusting member provided on the coil member is composed of an insulating sheet having a predetermined surface adhesive property that is wound around at least one of the coil members that constitute the coil end of the stator coil and face each other. The stator for a rotating electrical machine according to claim 2, wherein the stator is a rotating electrical machine.   The adhesion adjusting member provided on the coil member is composed of an insulating coating film having a predetermined surface adhesion formed on at least one surface of the coil members that constitute the coil ends of the stator coil and face each other. The stator for a rotating electrical machine according to claim 2, wherein the stator is a rotating electrical machine.   The adhesion adjusting member provided on the solid insertion member is composed of an insulating tape having a predetermined surface adhesive property wound around the solid insertion member. The stator of the rotary electric machine as described in any of the above.   The adhesion adjusting member provided on the solid insertion member is composed of an insulating sheet having a predetermined surface adhesion wound around the solid insertion member. The stator of the rotary electric machine as described in any of the above. The adhesion adjusting member provided on the solid insertion member is composed of an insulating coating film having a predetermined surface adhesion formed on the surface of the solid insertion member. The stator of the rotary electric machine according to any one of claims 5 to 6.

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