JP6383941B2 - Abduction motor and ceiling fan equipped with it - Google Patents

Description

  The present invention relates to an abduction motor having a speed adjustment function, and particularly to a crossover wiring structure between windings, and a ceiling fan on which the motor is mounted.

  Conventionally, this type of abduction motor employs a method in which an integral stator iron core is appropriately insulated and two-phase windings are wound concentrically (see, for example, Patent Document 1). .

  Hereinafter, the abduction motor will be described with reference to FIGS.

  As shown in the figure, the stator core 100 has a hole 101 for holding a hollow shaft in the center, a plurality of first tooth portions 102 in the vicinity of the outer periphery thereof, and a second tooth portion extending from there to the outer periphery. 103. The first tooth portion 102 and the second tooth portion 103 form a first slot 104 around which the A-phase winding 109 is wound, and a second slot 105 around which the B-phase winding 110 is wound. A first slot opening 106 and a second slot opening 107 are formed radially outward from the first slot 104 and the second slot 105. An operating capacitor 111 is electrically connected to the A-phase winding 109 and the B-phase winding 110.

  Also, this type of abduction motor generally uses a capacitor for speed adjustment. The speed adjusting means 112 connected to the power source includes a speed adjusting capacitor, can vary the voltage applied to the electric motor by various capacity settings, and the rotational speed of the electric motor is adjusted (for example, Patent Document 2). reference).

JP 2009-71913 A JP 62-48997 A

  However, such a conventional abduction motor has the following problems.

  In order to realize multi-stage speed adjustment switching, a plurality of speed adjustment capacitors are required, which hinders the miniaturization and thinning of the motor.

  In order to solve this problem, if a plurality of speed adjusting coils are provided in the stator winding of the electric motor and provided with a speed adjusting function using a winding tap, the above speed adjusting capacitor can be dispensed with.

  However, this type of abduction motor is wound by a fryer winding machine, and the winding coil is wound around the magnetic pole teeth of the stator core in an annular shape from the outside. If the connecting wire of the winding coil wound in the previous process does not cross the inner circumference side surely, the winding coil that is wound in an overlapping manner in the subsequent process will come into contact with the aforementioned connecting wire. As a result, excessive tension is applied to the crossover wire, causing the winding to be damaged or broken, resulting in a problem that the quality cannot be kept high.

  In addition, since the connecting wire of the winding coil wound in the previous process hinders the winding work in the subsequent process, the winding cannot be neatly and neatly wound, and the space factor of the winding can be improved. It becomes difficult.

  Therefore, the present invention solves the above-described conventional problems, and is capable of smoothly performing the winding operation of the stator while being provided with a speed adjustment function using a winding tap, and can maintain high quality. It is an object of the present invention to provide a rotary electric motor and a ceiling fan equipped with the same.

In order to achieve this object, the abduction motor of the present invention is
A stator core provided with a plurality of slots in an annular shape;
A stator winding wound in the slot;
A stator having an insulator provided between the stator winding and the stator core to insulate both;
An abduction motor including a rotor that is rotatably attached to the outer peripheral side surface of the stator core,
The slot is
A plurality of outer peripheral slots provided inward from the outer peripheral side surface of the stator core;
A plurality of inner peripheral slots provided inward from the outer peripheral slots of the stator core;
The stator winding is
An outer stator winding wound around the outer slot;
It consists of an inner circumference side stator winding wound around the inner circumference side slot,
An annular crossover support portion is provided inside the inner circumferential slot,
The crossover support part is
With locking means protruding in the direction of the rotation axis,
A crossover between the windings of the inner peripheral side stator winding is supported by passing the inner peripheral side of the locking means,
Providing a guide wall forming a guide groove in a substantially half circumference around the inner circumference side of the locking means;
The guide groove has a width on the pull-in side of the connecting wire wider than the pull-out side,
The connecting wire draw-in side and the draw-out side in the guide groove open toward the outer peripheral side,
The guide wall has a semicircular shape that bulges toward the inner peripheral side , thereby achieving the intended purpose.

According to the abduction motor of the present invention,
The stator winding is
An outer stator winding wound around the outer slot;
It consists of an inner circumference side stator winding wound around the inner circumference side slot,
An annular crossover support portion is provided inside the inner circumferential slot,
The crossover support part is
With locking means protruding in the direction of the rotation axis,
A crossover between the windings of the inner peripheral side stator winding is supported by passing the inner peripheral side of the locking means,
Providing a guide wall forming a guide groove in a substantially half circumference around the inner circumference side of the locking means;
The guide groove has a width on the pull-in side of the connecting wire wider than the pull-out side,
The connecting wire draw-in side and the draw-out side in the guide groove open toward the outer peripheral side,
Since the guide wall has a semicircular shape that bulges toward the inner circumferential side, the connecting wire of the inner stator winding crosses the inner slot. Therefore, the connecting wire does not hinder the winding work, and it is possible to obtain an effect of preventing the winding from being damaged or broken and keeping the quality high.

1 is a side view of a ceiling fan equipped with an abduction motor according to Embodiment 1 of the present invention. Sectional drawing which shows the whole structure of the abduction motor Exploded perspective view of the stator of the abduction motor Perspective view of stator before winding is wound The perspective view which expands and shows the principal part of FIG. The perspective view of the stator which shows the state by which the coil | winding was wound Connection diagram showing speed adjustment of the abduction motor The top view which shows the direction which passes a crossover between windings along a locking means Plan view with partial cross section of stator of conventional abduction motor Connection diagram showing speed adjustment of the abduction motor

The abduction motor according to claim 1 of the present invention is
A stator core provided with a plurality of slots in an annular shape;
A stator winding wound in the slot;
A stator having an insulator provided between the stator winding and the stator core to insulate both;
An abduction motor including a rotor that is rotatably attached to the outer peripheral side surface of the stator core,
The slot is
A plurality of outer peripheral slots provided inward from the outer peripheral side surface of the stator core;
A plurality of inner peripheral slots provided inward from the outer peripheral slots of the stator core;
The stator winding is
An outer stator winding wound around the outer slot;
It consists of an inner circumference side stator winding wound around the inner circumference side slot,
An annular crossover support portion is provided inside the inner circumferential slot,
The crossover support part is
With locking means protruding in the direction of the rotation axis,
A crossover between the windings of the inner peripheral side stator winding is supported by passing the inner peripheral side of the locking means,
Providing a guide wall forming a guide groove in a substantially half circumference around the inner circumference side of the locking means;
The guide groove has a width on the pull-in side of the connecting wire wider than the pull-out side,
The connecting wire draw-in side and the draw-out side in the guide groove open toward the outer peripheral side,
The guide wall has a semicircular shape that bulges toward the inner peripheral side . As a result, the connecting wire of the inner stator winding crosses the inside of the inner slot, so that the connecting wire does not interfere with the winding work and prevents the winding from being damaged or disconnected. An abduction-type electric motor that keeps high is obtained.

In addition, since the guide wall for forming the guide groove is provided in a substantially half circumference around the inner peripheral side of the locking means, the crossing wound inward from the outer peripheral side surface of the stator core by the flyer winding machine. Since the wire is guided to the guide groove along the guide wall and securely held by the locking means, the winding work becomes easy, and it is possible to prevent the winding from being damaged or disconnected and to keep the quality high. There is an effect that can be done.

In addition, since the guide groove has a configuration in which the width of the connecting wire pulling side is wider than that of the drawing side, the connecting wire wound by the flyer winding machine is pulled in because the width of the guiding groove pulling side is wide. It is easy and winding work becomes easy. In addition, since the width of the guide groove on the pulling side is narrow, the accuracy of the connecting wire pulling position is improved, so that the winding can be prevented from being damaged or disconnected, and the quality can be kept high.

  Moreover, you may make it the structure where the said crossover support part is arrange | positioned at the axial direction one end side of the said stator core. Thereby, since a crossover support part can be implement | achieved only by one component, the number of parts can be reduced and it can contribute to thickness reduction of an electric motor.

  Further, the crossover support portion includes a lead wire support portion that draws out and supports the lead wire of the winding start line and the winding end wire in the stator winding from above the guide groove toward the center of the rotation axis. It may be configured as follows. As a result, the lead wire of the stator winding can be connected to the power supply and the operating capacitor without touching the crossover wire, which facilitates the wiring work, prevents the winding from being damaged or disconnected, and improves the quality. There is an effect that it can be maintained.

  Further, the crossover support portion may be made of a synthetic resin integrally formed in an annular shape. Thereby, since a crossover support part is realizable only with one component, reduction of material cost can be aimed at.

  Moreover, you may make it the structure of a ceiling fan carrying the abduction type motor as described in any one of Claims 1-6. The ceiling fan has a large blade diameter and requires an electric motor that can hold a torque sufficient to rotate the blade at a predetermined rotational speed. Therefore, an abduction rotor and a multi-pole with a plurality of teeth arranged radially A relatively large abduction motor having a stator is used. In such an abduction motor for a ceiling fan, improvement in winding workability and improvement in the space factor of the winding are problems, so the abduction motor according to claims 1 to 6 is suitable. Therefore, it is possible to provide a ceiling fan capable of maintaining high quality and realizing power saving.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a side view of a ceiling fan on which an abduction motor according to Embodiment 1 of the present invention is mounted.

  The ceiling fan 1 is a fan attached to the ceiling, is also called a ceiling fan, and an abduction motor 2 is used as a drive source. The support column 4 is fixed downward on the ceiling. A hollow shaft 6 is connected to the support column 4, and an abduction motor 2 having blades 3 is attached to the tip thereof. The abduction motor 2 is covered with a main body cover 5 and an upper cover 11.

  FIG. 2 is a cross-sectional view showing the overall configuration of the abduction motor 2.

  The abduction motor 2 is a capacitor induction motor, and a hollow shaft 6 includes a stator core 16 and an A-phase winding 8 (inner peripheral side stator winding) and a B-phase winding 9 via an insulator 7. The stator 20 around which the (outer peripheral side stator winding) is wound is fixed. The lead wires of the A-phase winding 8 and the B-phase winding 9 are connected to each other and are electrically connected to the operating capacitor 10 and the power supply line 28 through a hollow shaft.

  A rotor core 17 is disposed around the stator core 16 with a hollow shaft 6 as a center through a gap. The rotor core 17 is press-fitted and held in the rotor cover 12 to form an abduction type rotor 18. The rotor cover 12 and the upper cover 11 are provided with a bearing housing portion 13a and a bearing housing portion 13b, and are rotatably attached to the hollow shaft 6 via ball bearings 14a and ball bearings 14b. An annular crossover support portion 41 is provided on the upper surface of the stator core 16 and on the inner peripheral side of the A-phase winding 8, and the crossover crossover 42 extending between the windings of the A-phase winding 8 is the locking means 45. Is supported across the inner periphery of the.

  FIG. 3 is an exploded perspective view of the stator 20 of the abduction motor 2. The stator core 16 is formed by laminating a plurality of electromagnetic steel plates in the axial direction, and has a center hole 21 for press-fitting and holding the hollow shaft 6 at the center thereof, and radially around the outer periphery of the center hole 21 at equal intervals. 1st tooth part 22 which winds up A phase winding 8 located in 2nd, and the 2nd tooth part which extends from the 1st tooth part 22 to the perimeter direction, and winds B phase winding 9 23.

  The adjacent first teeth 22 form a first slot 24 on the inner periphery, and a second slot 25 on the outer periphery is formed between the second teeth 23 extending in a bifurcated manner.

  The stator core 16 is formed with a positioning hole 26 for positioning the crossover support 41 and a positioning hole 27 for attaching the stator core 16 to the winding machine during winding work.

  The insulator 7a and the insulator 7b made of a resin molded product are sandwiched from both sides of the stator core 16 in the rotation axis direction, and when the A-phase winding 8 and the B-phase winding 9 are wound around the respective tooth portions, the stator Insulates from the iron core 16.

  And the positioning protrusion 43 protrudes and forms in the stator core 16 side at the crossover support part 41 which consists of an annular resin molded product.

  FIG. 4 is a perspective view of the stator before the winding is wound, and the crossover support portion 41 is attached to the stator core 16 from the axial direction. At that time, the positioning protrusion 43 of the crossover support part 41 is inserted into the positioning hole 26 of the stator core 16 for positioning.

  Next, the most characteristic part of the present application, the wiring structure of the jumper wire, will be described with reference to FIGS.

  FIG. 5 is an enlarged perspective view showing a main part of the stator before windings are wound. The crossover support 41 is provided inside the first slot 24. The crossover support part 41 is provided with locking means 45 protruding in the direction of the rotation axis. A guide wall 47 that forms a guide groove 46 is provided approximately half a circumference around the inner peripheral side of the locking means 45. The width of the lead-in side 48 and the lead-out side 49 of the connecting wire is different in the guide groove 46, and the width of the lead-in side 48 is formed wider than that of the lead-out side 49.

  FIG. 6 is a perspective view of the stator showing a state in which the winding is wound. An inner A-phase winding 8 and an outer B-phase winding 9 are wound around the stator core 16.

  Here, the connecting wire support part 41 supports the connecting wire 42 that crosses between the windings of the A-phase winding 8 by passing the inner peripheral side of the locking means 45. As shown in FIG. 2, since the crossover support 41 is provided on the stator core 16, the height of the guide groove 46 is substantially the same as the height at which the crossover 42 comes out of the A-phase winding 8. Yes. As a result, the crossover wire of the A-phase winding 8 crosses inward from the first slot 24, so that the crossover wire does not interfere with the winding operation, and the guide groove 46 further has the winding of the A-phase winding 8. Since it is almost the same height as the finished winding, damage and disconnection of the winding can be prevented and the quality can be kept high.

  Further, the connecting wire 42 wound inward from the outer peripheral side surface of the stator core 16 by the flyer winding machine is guided to the guide groove 46 along the guide wall 47 and is securely held by the locking means 45. Is done. Since the width of the pull-in side 48 of the crossover of the guide groove 46 is wide, it is easy to pull in and winding work is facilitated.

  In addition, since the width of the connecting wire lead-out side 49 of the guide groove 46 is narrow, the accuracy of the lead-out position of the connecting wire 42 is improved, so that the winding can be prevented from being damaged or disconnected, and the quality can be kept high.

  Next, the winding tap for speed adjustment will be described. FIG. 7 shows a connection diagram of an abduction motor having three-stage speed adjustment.

  The auxiliary winding 58 is connected in series with the speed adjusting winding 61, the speed adjusting winding 61 and the operation capacitor 10, and both ends thereof are connected in parallel with the main winding 59. Here, the main winding 59 means the aforementioned B-phase winding 9, and the auxiliary winding 58 and the speed adjusting windings 61 and 62 mean the aforementioned A-phase winding.

  The strong operation tap 65 is composed of a lead line of the winding start line 59s of the main winding and the winding start line 62s of the speed control winding, and the medium operation tap 66 is a winding end line 62e of the speed control winding and the speed control winding. The weak operation tap 67 is composed of a lead line between the winding end line 61e of the fast winding and the winding start line 58s of the auxiliary winding.

  When one of the power supplies 64 is connected to the strong operation tap 65, the notch of the abduction motor becomes strong operation. Similarly, when connected to the medium operation tap 66, it becomes medium operation, and when connected to the weak operation tap 67, it becomes weak operation. In other words, it has a speed adjustment function using a winding tap and eliminates the need for a speed adjusting capacitor, which can contribute to miniaturization and thinning of the electric motor.

  FIG. 8 is a plan view showing a direction in which the crossover wire 42 is passed between the windings along the locking means 45. The winding work is wound inward from the outer peripheral side surface of the stator core 16 by a flyer winding machine.

  First, the A-phase winding 8 (auxiliary winding 58, speed adjustment winding 61, speed adjustment winding 62) will be described. An arrow A indicates the upper direction of the A-phase winding 8. When the auxiliary winding 58 starts from the winding start line 58s and is wound around the first tooth portion 22 in the direction of the arrow A, the auxiliary winding 58 is passed over the inner peripheral side of the locking means 45 of the crossover support portion 41 and next adjacent. The first tooth portion 22 is wound in the direction of arrow A.

  After all the first tooth portions 22 are wound around in an annular shape, a winding end line 58e is drawn out. Similarly, the high-speed winding 61 starts from a winding start line 61s, and is wound around the auxiliary winding 58 wound around in an annular shape, and a winding end line 61e is drawn out. Next, the high-speed winding 62 starts from a winding start line 62s, and is wound around the wound high-speed winding 61 in an annular shape to draw a winding end line 62e. At that time, since the crossover between the windings crosses the inside of the slot on the inner peripheral side, there is nothing to disturb the windings, so that the high-speed windings are wound in layers without fear of damage to the windings or disconnection. The space factor of the winding can be improved.

  Next, the B phase winding 9 (main winding 59) will be described. An arrow B indicates the upper direction of the B-phase winding 9. When the main winding 59 starts from the winding start line 59s and is wound around the second tooth portion 23 in the direction of arrow B, the main winding 59 is then wound around the adjacent second tooth portion 23 in the direction of arrow B. After all the second teeth 23 are wound around in an annular shape, a winding end line 59e is drawn out.

  After all the windings have been wound, the winding start line and the winding end line (58s, 58e, 61s, 61e, 62s, 62e, 59s, 59e) of each of the windings described above are provided on the crossover support part 41. It is supported by the lead wire support portion 44 and connected as shown in FIG. As a result, the connecting wires of the A-phase winding and the B-phase winding can be connected to the power source and the operating capacitor without contacting each lead wire, so that the connection work is facilitated and damage to the winding can be reduced. Disconnection can be prevented and quality can be kept high.

  According to such a structure, since the crossover support portion 41 is disposed on one end side in the axial direction of the stator core 16, the crossover support portion 41 can be realized with only one component, so that the number of components can be reduced. In addition, it can contribute to the thinning of the electric motor.

Thus, according to the abduction motor 2 in Embodiment 1 of the present invention,
The stator winding includes an outer peripheral side stator winding wound around the second slot 25 and an inner peripheral side stator winding wound around the inner peripheral side slot. In addition, an annular crossover support portion 41 is provided, and the crossover support portion 41 includes a locking means 45 protruding in the direction of the rotation axis, and a crossover wire 42 that passes between the windings of the inner peripheral side stator winding. By adopting a configuration of supporting by passing the inner peripheral side of the locking means 45,
Since the connecting wire 42 of the inner peripheral side stator winding crosses the inside of the inner peripheral side slot, the connecting wire 42 does not interfere with the winding operation, and the winding is prevented from being damaged or disconnected. The effect of keeping high can be acquired.

  The abduction motor according to the present invention is useful as a driving motor for a ceiling fan or the like because it can improve the winding workability and can reduce the size and thickness of the motor.

DESCRIPTION OF SYMBOLS 1 Ceiling fan 2 External rotation type motor 3 Blade | blade 4 Support | pillar 5 Main body cover 6 Hollow shaft 7, 7a, 7b Insulator 8 A phase winding 9 B phase winding 10 Operation capacitor 11 Upper cover 12 Rotor cover 16 Stator core 17 Rotor core 18 Rotor 20 Stator 21 Center hole 22 First tooth part 23 Second tooth part 24 First slot 25 Second slot 26 Positioning hole 27 Positioning hole 28 Power line 41 Crossover support part 42 Crossover line 43 Positioning protrusion 44 Lead wire support 45 Locking means 46 Guide groove 47 Guide wall 48 Pull-in side 49 Pull-out side 58 Auxiliary windings 58s, 59s, 61s, 62s Winding start wires 58e, 59e, 61e, 62e Winding end wire 59 Main winding 61 62 Wind speed winding 64 Power supply 65 Strong operation tap 66 Medium operation tap 67 Weak operation tap

Claims (5)

A stator core provided with a plurality of slots in an annular shape;
A stator winding wound in the slot;
A stator having an insulator provided between the stator winding and the stator core to insulate both;
An abduction motor including a rotor that is rotatably attached to the outer peripheral side surface of the stator core,
The slot is
A plurality of outer peripheral slots provided inward from the outer peripheral side surface of the stator core;
A plurality of inner peripheral slots provided inward from the outer peripheral slots of the stator core;
The stator winding is
An outer stator winding wound around the outer slot;
It consists of an inner circumference side stator winding wound around the inner circumference side slot,
An annular crossover support portion is provided inside the inner circumferential slot,
The crossover support part is
With locking means protruding in the direction of the rotation axis,
A crossover between the windings of the inner peripheral side stator winding is supported by passing the inner peripheral side of the locking means,
Providing a guide wall forming a guide groove in a substantially half circumference around the inner circumference side of the locking means;
The guide groove has a width on the pull-in side of the connecting wire wider than the pull-out side,
The connecting wire draw-in side and the draw-out side in the guide groove open toward the outer peripheral side,
An abduction motor having a semicircular shape in which the guide wall bulges toward an inner peripheral side . 2. The abduction motor according to claim 1, wherein the crossover support portion is disposed on one end side in the axial direction of the stator core. In the crossover support part,
The lead wire of the winding start line and winding end line in the stator winding,
3. The abduction motor according to claim 1, further comprising a lead wire support portion that is pulled out and supported from above the guide groove toward the center of the rotation axis. The abduction motor according to any one of claims 1 to 3, wherein the crossover support portion is made of a synthetic resin integrally formed in an annular shape. A ceiling fan on which the abduction motor according to any one of claims 1 to 4 is mounted.

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