JP2005253225A - Stator of inturn type motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain insulation distance between a pin terminal and a housing without reducing a winding space and improve ease of assembly of a stator in a two-pole and two-phase inturn type motor. <P>SOLUTION: This two-pole and two-phase adduction type motor is constituted out of the stator 16, the housing 13, and a rotor 15. A terminal deck 12 of the stator 16 is formed by being integrally formed into a roughly disc shape by resin or the like, at least an electric part such as an excessive-temperature-rise preventing device is attached, and an extension portion 12a is provided at a portion adjacent to the sleeve-shaped or pin terminal in a winding side direction or a reverse winding side direction of an outer periphery of the terminal deck 12, thus obtaining the insulation distance between the pin terminal 9 and the steel plate housing 13 around which the lead wire of the stator winding is wound by the extension portion 12a of the terminal deck 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a stator for an internal rotation type electric motor having a structure in which a divided iron core body is divided into a plurality of parts and insulated, and a winding is directly wound, and then the divided iron core body is annularly integrated. .

  Conventionally, in the stator of this type of internal motor, there is a stator in which a plurality of divided cores are wound with windings for each phase and then the divided cores of each phase are arranged in a ring shape. It is known (see, for example, Patent Document 1).

Hereinafter, the stator of the internal-rotation motor will be described with reference to FIGS. 11 and 12.
As shown in FIG. 11 and FIG. 12, the divided tooth portion 101 is insulated with insulating materials 102 and 103, and then a pin terminal 105 for winding the lead wire of the winding 104 is provided to wind the winding 104. After wearing, it was a stator with a structure that was united into a ring.

  In addition, in this type of internal-rotor type motor stator, a plurality of divided cores a are attached with a long slot insulating film in the circumferential direction and wound with windings for each phase. (See, for example, Patent Document 2).

  Hereinafter, the stator of the internal-rotation motor will be described with reference to FIGS. 13 and 14.

As shown in FIG. 13 and FIG. 14, the stator core 200 is divided into a total of eight pieces of four divided iron cores a201 and four divided iron cores b204. There are two A-phase winding wound bodies 207 each having an A-phase winding 206 wound around the outer periphery of the rotor hole 205 so that the teeth 201-1 are substantially radial. Two of the B-phase winding wound bodies 209 in which the B-phase windings 208 are wound at positions separated by 90 degrees sandwich the divided iron cores b204 divided by the yoke portion 201-2, and are alternately annular. And the stator 210 is configured. Then, the slot insulating film 202 is attached to the divided iron core a201, and the upper surface, the lower surface and both side surfaces of the tooth portion 201-1, the inner peripheral surface of the circumferential protrusion on the inner peripheral side of the tooth portion 201-1, and the yoke portion 201-. The two inner peripheral surface divided iron cores b204 are attached so as to extend linearly to cover about half of the inner peripheral surface of the inner peripheral surface b204, and the number of poles A-phase winding 206 and the number of poles B-phase winding 208 are In each of the separate steps, each is continuously wound directly, and after the winding is finished, the slot insulating film 202 is deformed into a shape along the arc of the inner peripheral surface of the divided iron core body b204, and then the A phase. The winding wound body 207 and the B-phase winding wound body 209 are alternately arranged in an annular shape, and then the stator is configured such that the divided iron core body b204 is combined and integrated.
Japanese Patent Laid-Open No. 9-46979 JP 2001-238378 A

  In the case of pursuing the downsizing and high efficiency of such a conventional internal-rotor-type motor stator, the outer wall of the insulator should be provided as much as possible in order to secure a space for winding the A-phase winding and the B-phase winding. A pin terminal that ties the lead wire of the A phase winding and B phase winding provided on the outer wall to the outer circumference side and the inner wall as much as possible to the inner circumference side. There is a problem that it becomes close to each other and it is difficult to secure an insulation distance, and it is required to ensure quality even if the terminal pins are located on the outer peripheral side.

  The present invention solves such a conventional problem, and the terminal block connected via the pin terminal provided on the outer wall of the insulator can secure the insulation distance between the pin terminal and the housing. The object is to provide a stator of a rotary electric motor.

  In addition, in the stator of such a conventional internal-rotation type motor, similarly, in order to secure a space for the winding, one slot formed by adjacent tooth portions is insulated with one film. Depending on the flexibility of the film, there is a problem that it is difficult to follow the slot, and it is required that the film be easily and surely attached along the shape of the slot.

  The present invention solves such a conventional problem, and an add-on type that can be easily mounted along a slot shape by a slot insulating film having a fold at the center and an insulator sandwiching the film. The object is to provide a stator for an electric motor.

  In addition, the stator of such a conventional inward-type electric motor is wound so that the height of the coil end is constant in order to suppress the collapse when winding the respective windings. There is a problem that it is difficult to insert the split core body b in the yoke part when the windings slightly overflow at both ends on the side, and the split core body a and the split core body b of the yoke part are combined into an annular shape. Therefore, it is required to suppress the overflow of the winding to the outer peripheral side.

  The present invention solves such a conventional problem, and even if it is wound so that the height of the coil end is constant, the amount of winding in the vicinity of the outer wall is reduced to prevent overflow at both ends on the outer wall side. An object of the present invention is to provide a stator for an adder type electric motor that can easily combine a split iron core body a and a split iron core body b into a ring shape.

  In order to achieve the above object, the stator of the internal rotation type electric motor of the present invention has an outer periphery of a terminal block connected via a pin terminal provided on the outer wall of the insulator that ties the lead wire of the stator winding. A cylindrical extending portion is provided in the direction of the winding side or the non-winding side.

  By this means, the extension part of the terminal block connected via the pin terminal provided on the outer wall of the insulator can obtain the stator of the adder type electric motor that can secure the insulation distance between the pin terminal and the housing.

  In order to achieve the second object, a fold is provided at the center in the developing direction of the slot insulating film, and the storage portion of the fold is provided at both end portions on the inner wall side of the insulator.

  By this means, a stator of an adder type electric motor that can be easily mounted along the slot shape is obtained.

  Further, in order to achieve the third object, from the outer wall side to the wound portion of the insulator in which the winding portion and the inner and outer walls that insulate the end surface in the stacking direction of the divided core body a are integrally molded with resin or the like. Inclined protrusions are provided on the inner wall.

  By reducing the amount of winding in the vicinity of the outer wall by this means, overflow of the outer wall side both ends can be suppressed, and an internal motor that can easily combine the divided iron core body a and the divided iron core body b into an annular shape can be easily achieved. A stator is obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the internal motor which has the effect that the insulation distance of a pin terminal and a housing can be ensured with a terminal block can be provided.

  In addition, according to the present invention, it is possible to provide an adder type electric motor having an effect that the slot insulating film can be easily attached along the slot shape.

  Further, according to the present invention, by reducing the amount of winding in the vicinity of the outer wall, overflow of both end portions on the outer wall side can be suppressed, and the split iron core body a and the yoke portion can be easily combined into an annular shape. It is possible to provide a stator for an internal motor that is effective.

  According to the first aspect of the present invention, four divided iron cores a in which the tooth portion and the yoke portion are integrally laminated, and the yoke portion sandwiched between the divided iron cores a are laminated 4 A stator core composed of a plurality of divided core bodies b, four slot insulating films that respectively insulate four slots formed by the adjacent divided core bodies a, and a flange portion that sandwiches the slot insulating films. A winding part that insulates the end face in the stacking direction of the divided core body a and an insulator in which inner and outer walls are integrally molded with a resin or the like, a stator winding wound around the insulator, It consists of a terminal block connected via a pin terminal provided on the outer wall of the insulator that ties the winding terminal wire of the stator winding, and this terminal block is integrally molded in a substantially disc shape with resin or the like. This terminal block is equipped with at least electrical components such as an overheat prevention device. This is a stator of an internal rotation type motor provided with a cylindrical extension part in the direction of the outer winding side or the counter-winding side. The cylindrical extension part of this terminal block allows the pin terminal and the housing to be It has the effect | action that an insulation distance can be ensured.

  Further, the extending portion provided on the outer periphery of the terminal block is a part near the pin terminal, and has an effect that the amount of resin material used for the extending portion can be reduced.

  In addition, a crease is provided at the center of the development width direction of the slot insulating film, and a storage portion that can store the fold of the slot insulating film is provided at the end on the inner wall side of the insulator. By providing this, it is easy to mount the slot insulating film along the slot shape, and the workability is improved.

  In addition, the winding part of the insulator is provided with an inclined protrusion from the outer wall side to the inner wall side. By reducing the amount of winding in the vicinity of the outer wall, overflow at both ends of the outer wall side can be suppressed, and the split iron core It has the effect | action that the combination to the cyclic | annular form of the split iron core body b of the body a and a yoke part can be performed easily.

  Further, the upper part on the outer wall side of the inclined projection provided on the winding part of the insulator is formed into a flat shape, and the winding start of the stator winding from the pin terminal of the outer wall part is formed in the flat part. By winding, it has the effect of reliably preventing the collapse of the initial winding stage.

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

(Example 1)
As shown in FIGS. 1 to 10, the stator core 1 forming the four slots 6 is divided into four divided cores a4 and a yoke part in which a tooth part 2 and a part of the yoke part 3-1 are integrated. 3-2, divided into four pieces of four divided cores b5, an insulator 7 that is molded of resin and insulates the end face of the divided cores a2, a slot 6 and an inner peripheral side surface of the divided core b5 After the insulation treatment with the slot insulation film 8 that insulates, the pin terminal 9 provided on the outer wall 7c side of the insulator 7 is wound with the start of the winding of the stator winding, and the two-phase A phase with respect to the divided core body a4. Winding 10 or B-phase winding 11 is wound directly, the end of the winding of the stator winding is tied to another pin terminal 9, the divided cores b5 are combined and integrated into an annular shape, and the pin terminal 9 is Thus, the terminal block 12 is electrically connected to form a stator 16 of an adder type electric motor. And the rotor 15 hold | maintained rotatably with the housing 13 and the bearing 14 is made to exist, and the adder type | mold electric motor 17 is comprised combining.

  In the above configuration, the terminal block 12 is integrally molded in a substantially disc shape with resin or the like, and at least an electrical component such as an overtemperature prevention device (not shown) is mounted, and the outer periphery of the terminal block 12 is wound. This is a stator 16 of an internal rotation type motor provided with a cylindrical extension portion 12a in the side or counter-winding side direction. The cylindrical extension portion 12a of the terminal block 12 allows the pin terminal 9 and An adder motor 17 that can secure an insulation distance from the housing 13 can be realized.

  In addition, although the extending part 12a is formed in the cylindrical shape along the disk shape of the terminal block 12, even if it has a linear part partially, the effect does not produce a difference.

  Further, the extending portion 12b provided on the outer periphery of the terminal block 12 is a part near the pin terminal 9, and the amount of resin material used for the extending portion 12a can be reduced.

  Although the extended portion 12b provided on the outer periphery of the terminal block 12 is a part near the pin terminal 9, even if it is a part near the stator winding where the insulation distance from the housing cannot be secured, there is no difference in the effect. .

  In the above configuration, the fold 8a is provided at the center in the development width direction of the slot insulating film 8, and the storage portion 7a capable of storing the fold 8a of the slot insulating film 8 is provided at the end on the inner wall 7d side of the insulator 7. By providing the slot insulating film 8 with a play due to the film-specific flexibility in the storage portion 7a, it becomes easy to mount the slot insulating film along the slot shape, and workability can be improved.

  In addition, although the fold line 8a of the slot insulating film 8 is mountain-folded on the outer peripheral side, even if it is mountain-folded on the inner peripheral side, there is no difference in the effect.

  In the above configuration, the winding portion 7e of the insulator 7 is provided with the inclined projection 7b having a width smaller than the width of the winding portion 7e from the outer wall 7c side to the inner wall 7d side, and is fixed. At the beginning of the winding of the child winding, the winding shape is polygonal at both corners of the protrusion 7b and the winding part 7e, so that the coil can be prevented from collapsing. The amount of winding in the vicinity of the outer wall is reduced by the height of the portion 7b, and overflow to both end portions on the outer wall 7c side can be suppressed, and the annular combination of the divided core body a4 and the divided iron core body b5 can be easily performed. can do.

  Further, the upper portion on the outer wall 7c side of the inclined projection 7b provided on the winding portion 7e of the insulator 7 is shaped as a flat portion 7f, and the stator winding from the pin terminal 9 on the outer wall 7c side. By winding the winding start of the winding around the flat portion, it is possible to reliably prevent the winding start winding from collapsing, and to prevent the winding start winding wound around the pin terminal 9 from being damaged or disconnected.

  Although the upper part on the outer wall 7c side of the projecting part 7b having the inclined shape of the insulator 7 is formed into a flat surface, the upper part on the outer wall 7c side of the projecting part 7b may be an inclined part 7g having an inclined shape opposite to the inclined shape. There is no difference in function and effect.

  The adder motor according to the present invention can secure an insulation distance between the pin terminal provided on the outer wall of the insulator and the steel plate housing, so that the adder motor can be downsized and ventilated. It is useful to install a small air volume device that operates continuously for 24 hours, such as a device, or a fan motor.

  In addition, by making it easy to combine the split core body a and the split core core b of the yoke part into an annular shape and improving workability, it is possible to increase the occupancy ratio of the windings, and increase the efficiency and output. A rotary electric motor can be obtained, and it is useful to be mounted on a ventilator or a fan motor.

Sectional drawing of the internal rotation type | mold electric motor of Example 1 of this invention Front view showing the split stator core Front view of the stator Front view showing a state in which the extension of the terminal block is cylindrical Front view showing a state in which the extended part of the terminal block is in the vicinity of the pin terminal Perspective view of the slot insulation film The perspective view which shows the collar part of the insulator Perspective view showing protrusion of same insulator The front view which shows the state which made the protrusion upper part of the insulator the plane The front view which shows the state which made the protrusion upper part of the insulator the reverse inclination shape The perspective view which shows the state which wound the coil | winding to the tooth | gear part of the conventional stator Cross section of the stator Front view of another conventional stator Sectional drawing which shows the state which wound the winding to the division | segmentation iron core body a

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stator iron core 2 Tooth part 3-1, 3-2 yoke part 4 Divided iron core body a
5 split iron core b
6 Slot 7 Insulator 7a Storage 7b Protrusion 7c Outer wall 7d Inner wall 7e Winding part 7f Flat part 7g Inclined part 8 Slot insulating film 8a Fold 9 Pin terminal 10 A phase winding 11 B phase winding 12 Terminal block 12a, 12b Extension part 13 Housing 14 Bearing 15 Rotor 16 Stator 17 Additive motor

Claims (5)

A stator comprising four divided core bodies a in which the tooth portions and the yoke portions are integrally laminated, and four divided core bodies b in which the yoke portions sandwiched between the divided core bodies a are laminated. A stacking direction of the divided cores a, including an iron core, four slot insulating films that respectively insulate four slots formed by the adjacent divided cores a, and a flange that sandwiches the slot insulating films; The insulator is formed by integrally forming the winding part for insulating the end face of the wire and the inner and outer walls with resin, the stator winding wound around the insulator, and the lead wire of the stator winding. It consists of a terminal block connected via a pin terminal provided on the outer wall of the insulator, and this terminal block is integrally formed in a substantially disc shape with resin or the like, and at least an electrical component such as an overtemperature prevention device Install the outer circumference of this terminal block on the winding side or anti-winding side Rotor type motor stator of which is provided a cylindrical extension portion of the. The stator of an internal rotation type electric motor according to claim 1, wherein the extending portion provided on the outer periphery of the terminal block is a part near the pin terminal. 2. The internal motor according to claim 1, wherein a fold is provided at a center portion in the development width direction of the slot insulating film, and storage portions that can store the folds of the slot insulating film are provided at both end portions on the inner wall side of the insulator. stator. The stator of an adder type electric motor according to claim 1, wherein the winding portion of the insulator is provided with a protruding portion having an inclined shape from the outer wall side toward the inner wall. 5. The stator of an internal rotation type electric motor according to claim 1, wherein the outer wall side upper portion of the inclined projection provided on the winding portion of the insulator is a flat surface.

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