JP4503329B2 - Condenser motor - Google Patents

Description

  The present invention relates to a capacitor motor that is used for blowing small household electrical appliances such as a ventilation fan and a fan, and has a structure in which a driving capacitor is built inside a motor housing.

  Conventionally, this type of capacitor motor has a structure in which a capacitor that is detachably held with respect to a terminal block body is built in (see, for example, Patent Document 1).

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

As shown in the figure, the terminal block main body 101 has terminals 107 connected to a stator winding 106 wound around an external component connecting terminal 102, a capacitor connecting terminal 103, and a stator core 104 via an insulator 105. The capacitor connecting terminal 103 is fixed so that the capacitor 108 is inserted in a direction substantially perpendicular to the rotor shaft 109 of the capacitor motor. It is configured. The element of the capacitor 108 is housed in a capacitor case 110, and the capacitor case 110 is provided with a capacitor terminal 111 connected to the capacitor connection terminal 103. The capacitor terminal 111 of the capacitor 108 is inserted in a direction perpendicular to the capacitor connecting terminal 103 of the terminal block main body 101 and the rotor shaft 109, whereby the terminal block 112 is completed and incorporated in the motor.
JP 2002-51513 A

  In such a conventional capacitor motor, since the capacitor is detachable from the terminal block body, it is necessary to provide a detachable terminal in the capacitor case. The thickness of the capacitor case increases the total thickness of the capacitor. The capacitor is mounted in close contact with the insulator around which the stator winding is wound, but it is not configured to be housed in the winding unoccupied space in the space inside the insulator, and therefore the winding non-occupying space is effectively utilized. There is a problem that the axial thickness of the electric motor increases accordingly, and it is required to reduce the axial dimension of the electric motor.

The present invention solves such a conventional problem, and an object of the present invention is to provide a capacitor motor that can reduce the axial thickness of the motor.

In order to achieve the above object, the condenser motor of the present invention has a cylindrical housing and several poles as stator windings by concentrated winding around each tooth portion of the stator core that is fitted to the inner peripheral wall. A stator having a main winding or several auxiliary windings wound through an insulating bobbin, a terminal block for electrically connecting terminal wires of the stator winding, and a housing rotatably held by the housing The terminal block comprises a rotor disposed on the inner diameter portion of the stator, and the terminal block has a plurality of rectangular shapes for mounting a hole larger than the outer diameter size of the bearing of the rotor and an operating capacitor at the center portion thereof. And the notch hole is formed so that the longitudinal direction thereof substantially coincides with the winding direction of the main winding or the auxiliary winding. The capacitor for operation is inserted in the film winding type. It is located between the inner diameter side rising portion and the outer diameter side rising portion of the insulating bobbin and is arranged so as to protrude from the terminal block main body to the stator side so as to be close to the end face of the stator winding. .

  This means makes effective use of the unoccupied space of the windings where the main and auxiliary windings are not wound between the inner diameter side rising part and the outer diameter side rising part of the insulating bobbin, and the axial direction of the motor Thus, a capacitor motor having a structure that can be reduced in thickness and thickness can be obtained.

In addition , the non-occupying space of the winding in which the main winding and the auxiliary winding are not wound between the inner diameter side rising portion and the outer diameter side rising portion of the insulating bobbin is effectively utilized, and the radial direction of the capacitor Capacitors with a structure that can maximize the size of the capacitor, that is, maximize the capacity of the capacitor, that is, maximize the capacity of the capacitor, and at the same time reduce the thickness dimension in the axial direction of the motor and reduce the thickness. An electric motor is obtained.

  Further, in order to achieve the above object, the capacitor motor of the present invention has a built-in operating capacitor having a capacitance less than half of the upper limit value that can be mounted on the terminal block, or a low-voltage motor or the like. One capacitor is used, and one of the notch holes for inserting the capacitor is left empty.

  This eliminates the use of a plurality of capacitors in an electric motor operated with a low electrostatic capacity, and a capacitor motor that can be rationalized and can be reduced in thickness in the axial direction can be obtained.

Further , the capacitor volume can be reduced as compared with a cased capacitor or a dip capacitor, and a capacitor motor can be obtained in which the axial thickness of the motor can be reduced.

  In order to achieve the above object, the capacitor motor of the present invention is provided in the terminal block main body, and a plurality of notch holes for interposing the built-in capacitors are adjacent to the adjacent stator windings. It is set as the structure arrange | positioned adjacent to an anti-stator iron core side.

  Thus, a plurality of notch holes for inserting the capacitors are arranged adjacent to the terminal block main body, and the capacitor motor can reduce the wiring space of the conductor to which the one or more capacitors are arranged close to each other. Is obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the capacitor | condenser motor with the effect that thickness reduction of the axial direction of an electric motor is possible can be provided.

  In addition, according to the present invention, the capacity of the capacitor can be maximized, that is, the capacity of the capacitor can be maximized. At the same time, when the capacity is the same, the axial dimension of the motor can be reduced and the capacitor motor can be thinned. Can provide.

  In addition, it is possible to provide a capacitor motor that can eliminate the use of a plurality of capacitors and can reduce the thickness in the axial direction and can be rationalized.

  Further, it is possible to reduce the volume of the capacitor as compared with a cased capacitor or a dip capacitor, and it is possible to provide a capacitor motor that can reduce the axial thickness of the motor.

  In addition, it is possible to provide a capacitor motor that can reduce the wiring space of a plurality of capacitors and reduce the size of the terminal block body.

According to the first aspect of the present invention, a cylindrical housing and a plurality of main windings as a stator winding are concentrated and wound around each tooth portion of the stator core that is fitted on the inner peripheral wall. A stator in which a wire or several auxiliary windings are wound via an insulating bobbin, a terminal block for electrically connecting terminal wires of the stator winding, and the stator rotatably held in the housing The terminal block has a plurality of rectangular cuts for mounting a hole larger than the outer diameter of the bearing of the rotor and a capacitor for operation. A notch hole, and the notch hole is formed so that a longitudinal direction thereof substantially coincides with a winding direction of the main winding or the auxiliary winding, so that one or a plurality of the operating capacitors are formed. This operating capacitor is a film winding type and has an inner diameter of the insulating bobbin. It is located between the rising part and the outer diameter side rising part and is arranged so as to protrude from the terminal block main body to the stator side so as to be close to the end face of the stator winding, and on the inner diameter side of the insulating bobbin Effectively utilizes the unoccupied space of the windings where the main and auxiliary windings are not wound between the rising part and the outer diameter side rising part, reducing the axial dimension of the motor and making it thinner It has the effect | action of setting it as the possible structure.

Further, by effectively utilizing the unoccupied space of the winding main winding and auxiliary winding between the inner diameter side startup portion and the outer diameter side starting up of the insulation bobbin is not wound, the diameter of the capacitor The direction dimension can be almost maximized, and the capacity of the capacitor can be maximized, that is, the capacity of the capacitor can be maximized. At the same time, the axial dimension of the motor can be reduced and the thickness can be reduced. be able to.

In addition, in an electric motor with a built-in capacitor having an electrostatic capacity of less than half of the upper limit value that can be mounted on the terminal block, one capacitor is used and one notch hole for inserting one capacitor is empty. It was set as it was.
In addition, the built-in capacitor is a film winding type, and the outer protection and insulation of the capacitor element is configured by only winding a predetermined thickness of the insulating film a predetermined number of times, and fixing with an insulating resin is provided on the side surface of the element. In addition, it is used only to protect the terminal part, and has a built-in operating capacitor that can be reduced in size and thickness.
In addition, a plurality of notches in the terminal block body that are provided in the terminal block body and interpose the built-in capacitors are adjacent to the adjacent stator windings and adjacent to the anti-stator core side. Arranged.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 4, 6, and 9, a cylindrical housing 1, a stator core 2 inserted in the inner peripheral wall, and each tooth part 2-1 through an insulating bobbin 3. A stator 5 comprising a stator winding 4 having a number of poles main winding 4-1 and a number of poles auxiliary windings 4-2 that are directly wound in a concentrated manner, and this stator winding 4 is composed of a terminal block 7 for electrically connecting the terminal wires 4 and a rotor 8 which is rotatably held by the housing 1 and arranged at the inner diameter portion of the stator 5. 1 has a hole 10 larger than the outer diameter of the bearing 9 of the rotor 8 and two rectangular cutout holes 12 for mounting the operation capacitor 11, and the operation capacitor 11-1 and 11-2 are connected in parallel to each other and connected to the stator winding 4, and the two rectangular cutout holes 12-1 and 12-2 are connected. It is arranged inserted between each. The terminal block 7 is directly wound via an insulating bobbin 3 made of an insulating resin inner diameter side rising portion 3-1, outer diameter side rising portion 3-2 and iron core insulating portion 3-3. The stator winding 4 is electrically connected to the insulation bobbin 3 and fixed thereto.

  Further, in FIG. 5, when the capacitance is less than half of the upper limit capacitance of the capacitor 11 that can be mounted on the terminal block 7 or the low voltage specification is used, one capacitor 11 is used. One capacitor 11 notch hole 12 provided in the terminal block body 7-1 is configured to be empty.

  7 and 8, the capacitor 11 is a film winding type capacitor element 14, and the exterior of the capacitor element 14 is formed by winding an adhesive insulating film 15 wider than the width of the capacitor element 14 a predetermined number of times. The electrodes on both sides are connected to an electrode lead 17 via a metallicon treatment layer 16, and the electrode lead 17 and the connecting portion are fixed and protected by an insulating resin layer 18.

  1 and FIG. 6, the two notch holes 12-1 and 12-2 that are provided in the terminal block body 7-1 and interpose the built-in capacitor 11 are formed in the adjacent stator windings 4. Close to the anti-stator iron core side and arranged adjacent to each other.

  In the above configuration, the driving capacitor 11 is electrostatically divided into two capacitors 11-1 and 11-2, and the axial direction of the capacitors 11-1 and 11-2 on the side of the stator core 2. The end surface is a non-occupied portion of the winding of the stator winding 4 formed by the inner diameter side rising portion 3-1 and the outer diameter side rising portion 3-2 of the insulating bobbin 3, respectively. It protrudes to the space 19 and is respectively interposed in two notch holes provided in the terminal block body 7-1. Therefore, the terminal block body 7-1 of the capacitors 11-1 and 11-2. Thus, the projecting dimension from the end face on the side opposite to the stator winding is reduced, the axial dimension of the electric motor is reduced, and a configuration capable of being thinned is obtained.

  Further, when the capacitor 11 has a low capacitance specification or a low voltage specification and the required capacitance can be ensured by one capacitor 11, the notch hole 12 provided in the terminal block body 7-1. The capacitor 11 is attached to only one, and the other notch hole 12 is left empty without attaching the capacitor 11, and the cost of the capacitor 11 portion is reduced.

  Further, by adopting an adhesive insulating film winding specification as the exterior of the capacitor element 14, the volume of the capacitor 11 can be reduced and the size can be reduced as compared with a case-filled type and a dip type in which the capacitor element 14 is immersed in a resin. It becomes possible.

  In addition, two notch holes for interposing the capacitors 11 provided in the terminal block body are provided close to the anti-stator iron core side in the motor shaft direction of the adjacent stator windings 4. It is possible to shorten and simplify the mutual wiring for parallel connection of 11-1 and the capacitor 11-2.

(Embodiment 2)
1, FIG. 6, FIG. 7 and FIG. 9 show the relationship between the built-in capacitor 11 for operation, the notch hole 12 into which this capacitor is inserted, and the winding direction of the stator winding 4. The base 7 is composed of a terminal block body 7-1 made of insulating resin, a capacitor 11 for operation, and a wiring conductor 20 made of a conductive material. The wiring conductor 20 is mostly molded with the insulating resin of the terminal base body 7-1. The terminal wire 13 of the stator winding 4 is electrically connected to a plurality of pin terminals 21 installed on the axial end face of the inner diameter side rising portion 3-1 or the outer diameter side rising portion 3-2 of the insulating bobbin 3. The pin terminal connection portion 20-1, the capacitor lead connection portion 20-2 electrically connected to the capacitor electrode lead 17, and the power supply connection portion 20-3 are at least exposed. The terminal block body 7-1 has a hole 10 through which the bearing 9 of the rotor 8 is inserted and a notch hole 12 into which the operating capacitor 11 is inserted. The longitudinal direction A of the notch hole 12 is the capacitor 11. Are configured to coincide with the longitudinal direction B and the winding direction C of the stator winding 4.

  In the above configuration, the rectangular cutout holes 12 provided in the terminal block body 7-1 for mounting the driving capacitor 11 are respectively composed of several main windings 4-1 and auxiliary windings 4-2. The stator winding 4 is close to the side opposite to the stator core, and the winding direction C of the stator winding 4 coincides with the longitudinal direction A of the notch and the longitudinal direction B of the outer shape of the capacitor 11. Therefore, the portion protruding from the terminal block body 7-1 to the end face side of the stator winding 4 can easily enter the non-occupied space 19 of the winding among the portions that can be wound around the bobbin. 19 can be used effectively, the radial dimension of the capacitor 11 can be substantially maximized, and the capacity of the capacitor 11 can be maximized, that is, the capacity of the capacitor 11 can be maximized. The thickness dimension in the direction can be reduced and the thickness can be reduced. It made.

  In the first embodiment and the second embodiment, the number of poles of the winding is 2. However, other pole numbers may be used, and there is no difference in the operation effect.

  In addition, the number of built-in capacitors and the notch holes for inserting the capacitors in the terminal block main body are not limited to one or two as shown in the first embodiment or the second embodiment. Even so, the basic effect can be obtained.

  Also, the electrical components to be mounted on the terminal block are not limited, and it is always possible to add motor protection components such as temperature fuses and current fuses and wiring members.

  In addition, the wiring conductor has a configuration in which portions other than the connection portion are molded with an insulating resin. However, the present invention is not limited to this, and the same effect can be obtained in a lead wiring by a lead wire or a wiring structure by a printed board.

  As described above, the configuration of the capacitor motor of the present invention in which the stator winding is wound around each tooth portion of the stator core via the insulating bobbin by concentrated winding and the terminal wire of each winding is electrically connected by the terminal block is as follows. When the operating capacitor is built in the housing, it can be applied to an application in which the axial dimension is suppressed and the motor needs to be thinned.

1 is a side sectional view showing a capacitor motor according to a first embodiment of the present invention. Wiring diagram of the capacitor motor Front view of the condenser motor when the non-load housing is removed Front view of terminal block with two capacitors for operation of the same capacitor motor Front view of terminal block with one capacitor for operation of the same capacitor motor Front view of the terminal block of the capacitor motor according to the second embodiment of the present invention. Perspective view of capacitor for operation of the same capacitor motor Partial sectional side view of the capacitor for operation of the same capacitor motor Front view of the stator before the terminal block of the capacitor motor is installed Front view of another terminal block of the same capacitor motor Side sectional view showing a conventional capacitor motor Wiring diagram of the capacitor motor Front view of the terminal block of the capacitor motor Front view of the terminal block body of the capacitor motor Perspective view of capacitor for operation of the same capacitor motor

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Stator iron core 3 Insulating bobbin 3-1 Inner diameter side rising part 3-2 Outer diameter side rising part 4 Stator winding 4-1 Main winding 4-2 Auxiliary winding 5 Stator 7 Terminal block 7-1 Terminal block body 8 Rotor 9 Bearing 10 Hole 11 Capacitor (11-1, 11-2)
12 Notch holes (12-1, 12-2)
13 Terminal Line 14 Capacitor Element 15 Adhesive Insulating Film 16 Metallicon Treatment Layer 17 Electrode Lead 18 Insulating Resin Layer 19 Non-Occupied Space 20 Wiring Conductor 20-1 Pin Terminal Connection 20-2 Capacitor Lead Connection 20-3 Power Supply Connection 21 pin terminal

Claims (3)

A cylindrical housing;
A number of poles of the main winding or poles of auxiliary windings are wound around an insulating bobbin as a stator winding in a concentrated winding around each tooth portion of the stator core that is fitted to the inner peripheral wall. A stator,
A terminal block for electrically connecting the terminal wire of the stator winding;
The rotor is rotatably held by the housing and is arranged on the inner diameter portion of the stator.
The terminal block has a hole larger than the outer diameter of the bearing of the rotor and a plurality of rectangular cutout holes for mounting an operating capacitor at the center thereof,
The notch hole is formed so that the longitudinal direction thereof substantially coincides with the winding direction of the main winding or the auxiliary winding, and one or a plurality of the operating capacitors are inserted,
The operating capacitor is a film winding type, and is positioned between the inner diameter side rising portion and the outer diameter side rising portion of the insulating bobbin so as to be close to the end face of the stator winding. A capacitor motor having a configuration in which the stator projects from the stator side. In an electric motor with a built-in operating capacitor with a capacitance of less than half of the upper limit that can be mounted on the terminal block or with a low voltage specification, one capacitor is used and one notch hole for capacitor insertion The capacitor motor according to claim 1, wherein is configured to be empty. A plurality of notch holes provided in the terminal block body for interposing a built-in capacitor are disposed adjacent to each other on the side opposite to the stator core adjacent to each adjacent stator winding. The capacitor motor according to 1.

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