JP2003259614A - Molded motor, blower, air conditioner, method of manufacturing molded motor, and metal mold for molded motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a molded motor with highly precise substrate positioning achieved by restricting the location where a substrate is positioned. <P>SOLUTION: The molded motor has a winding on a stator core via an insulated section and a stator which has installed thereon a substrate on which a position detecting device is mounted, and is molded with a molding resin. The motor is characterized by comprising a substrate inner perimeter hole for placing a rotor and a substrate holding notch on the perimeter of the substrate inner perimeter hole being provided on the substrate in a position further inside than the position detection device. When molding, the substrate inner perimeter hole is engaged with a fixing metal mold to determine the radial positioning; the substrate holding notch is engaged with the to determine the circumferential positioning; and further, the movable metal mold holds down the surface with the substrate holding notch to perform the molding. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold electric motor for fixing a substrate at an insulating portion, a method for manufacturing the same, a mold for molding the same, a blower using the mold electric motor, and an air conditioner using the blower. is there.

[0002]

2. Description of the Related Art FIG. 15 shows, for example, Japanese Utility Model Laid-Open No. 62-4186.
It is sectional drawing which shows the molding process of the stator in the conventional mold electric motor disclosed by the 4th publication. As shown in the figure, this molded motor has a spacer 24 between the substrate 3 and the stator 26 for supporting the substrate 3 with respect to the winding 8 of the stator 26 or the stator core 7. The core metal, the upper mold and the lower mold are fitted into the stator 26, and resin or the like is injected from the gate 25. Even if pressure is applied to the substrate 3 by injecting resin or the like, the presence of the spacers 24 prevents the substrate 3 from being deformed.

FIG. 16 shows, for example, Japanese Patent Laid-Open No. 62-64243.
FIG. 7 is a cross-sectional view showing a molded state of a stator in another conventional molded electric motor disclosed in Japanese Patent Publication No. JP-A-2003-242242. As shown in the figure, the stator 26 with the winding completed is installed in the cavity of the mold fixing mold 30, and the mold is sealed by the movable mold 29, and the gate 2 is provided substantially at the center of the stator core in the stacking direction.
Mold resin 5 is injected under pressure from 5. A plurality of pins 33 and 34 project downward in the mold movable mold 29. The outer peripheral projection of the stepped portion of the pin 33 contacts the upper end surface of the substrate 3 to prevent the substrate 3 from being displaced by being moved upward or bent. The substrate 3 is clamped by the pin 33 and the pin 35 provided on the upper end of the mandrel of the mold fixing die 30, and the substrate 3 is positioned in the thrust direction and prevented from moving by the mold resin 5.

[0004]

Since the conventional method of fixing the substrate in the molded electric motor is as described above, there are the following problems. (1) In the one disclosed in Japanese Utility Model Laid-Open No. 62-41864, the positioning accuracy of the substrate 3 cannot be ensured unless the accuracy of all parts is high, and deformation and movement in molding are not taken into consideration. (2) The method disclosed in Japanese Patent Application Laid-Open No. 62-64243 discloses a method of fixing the substrate 3 with a mold. In particular, which position of the substrate 3 is fixed is determined by the position detecting element. In contrast, it did not indicate which position was fixed.

According to the present invention, by limiting the position of the substrate to be positioned, a molded electric motor having a high position accuracy of the substrate,
An object of the present invention is to provide a manufacturing method thereof, a molding die thereof, a blower using a mold electric motor, and an air conditioner using the blower.

[0006]

SUMMARY OF THE INVENTION A mold motor according to the present invention is a mold in which a stator iron core is wound through an insulating portion and a stator mounted with a substrate on which a position detecting element is mounted is molded with a molding resin. In the electric motor, a substrate inner peripheral hole for disposing the rotor on the substrate, and a substrate fixing notch on the peripheral surface of the substrate inner peripheral hole are provided inside the position detecting element,
At the time of molding, the inner peripheral hole of the substrate is fitted in the mold fixing die for radial positioning, the substrate fixing notch is fitted in the mold fixing die for circumferential positioning, and the mold movable die Is pressed down on the surface including the substrate fixing notch, and the substrate is fixed to be molded.

Further, the molded electric motor according to the present invention is
The inner peripheral hole of the substrate is characterized in that the inner peripheral hole of the substrate is fitted to a bearing housing forming portion arranged at the center of the upper portion of the center shaft of the mold for fixing the mold, and is positioned in the radial direction.

Further, the molded electric motor according to the present invention is
The substrate fixing notch is characterized in that it is fitted in a mold fixing mold substrate fixing portion provided on the center shaft of the mold fixing mold and positioned in the circumferential direction.

Further, the molded electric motor according to the present invention is
The substrate fixing notch is characterized in that it is fitted in a fixing convex portion provided at an end of the mold fixing die substrate fixing portion and positioned in the circumferential direction.

Further, the molded electric motor according to the present invention is
It is characterized in that the substrate fixing portion of the mold movable die presses the surface including the substrate fixing notch.

Further, the molded electric motor according to the present invention is
It is characterized in that a plurality of substrate fixing portions of the movable mold are provided.

Further, the molded electric motor according to the present invention is
During molding, the convex stator core fixing part of the mold fixing die is fitted into the slot opening of the stator core or the concave part provided on the inner peripheral surface of the teeth of the stator core to form the stator core. It is characterized by being positioned.

Further, the molded electric motor according to the present invention is
The stator core fixing portion of the mold for fixing mold is characterized in that it is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold for fixing mold.

Further, the molded electric motor according to the present invention is
A plurality of stator core fixing portions of the mold fixing die are provided in the circumferential direction.

Further, the molded electric motor according to the present invention is
After the molding, the substrate is exposed in the recess where the mold movable die for pressing the surface including the substrate fixing notch is removed.

Further, the molded electric motor according to the present invention is
The present invention is characterized in that a defect at the time of mold clamping or at the time of molding is judged from the state of the substrate exposed in the recess on the outer surface of the mold.

The blower according to the present invention is defined by claims 1 to 11.
The molded electric motor according to any one of 1 to 3 is used.

An air conditioner according to the present invention is characterized by claim 12.
It is characterized by using the blower described in.

The method of manufacturing a molded electric motor according to the present invention is a method of manufacturing a molded electric motor in which a stator core is wound with an insulating portion and a stator mounted with a substrate on which a position detecting element is mounted is molded with a molding resin. In the method, for the rotor arrangement of the substrate, a step of fitting a mold fixing die into the substrate inner peripheral hole provided inside the position detecting element to perform radial positioning, and the substrate inner peripheral hole On the circumference,
The step of fitting the mold fixing die into the substrate fixing notch provided inside the position detection element to perform positioning in the circumferential direction, and the mold movable die pressing down the surface including the substrate fixing notch to move the substrate. A step of fixing and molding.

Further, in the method of manufacturing the molded electric motor according to the present invention, the inner peripheral hole of the substrate is fitted in the bearing housing forming portion arranged at the center of the upper portion of the center shaft of the mold for fixing the mold, and the positioning is performed in the radial direction. It is characterized by

Further, in the method of manufacturing a mold electric motor according to the present invention, the substrate fixing notch is fitted to the mold fixing mold substrate fixing portion provided on the center shaft of the mold fixing mold for positioning in the circumferential direction. Is characterized by.

Further, in the method of manufacturing the molded electric motor according to the present invention, the substrate fixing notch is fitted to the fixing convex portion provided at the end of the mold fixing die substrate fixing portion to perform circumferential positioning. It is characterized by

Further, the method of manufacturing a molded electric motor according to the present invention is characterized in that the substrate fixing portion of the mold movable die presses the surface including the substrate fixing notch.

Further, the method of manufacturing a molded electric motor according to the present invention is characterized in that a plurality of substrate fixing portions of the movable mold for molding are provided.

Further, in the method of manufacturing the molded electric motor according to the present invention, the convex stator core fixing portion of the mold fixing die is formed by the slot opening of the stator core or the teeth of the stator core during molding. It is characterized in that the stator core is positioned by being fitted into the recess provided on the peripheral surface.

Further, in the method of manufacturing a molded electric motor according to the present invention, the stator core fixing portion of the mold fixing die is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. And

Further, the method for manufacturing a molded electric motor according to the present invention is characterized in that a plurality of stator core fixing portions of a mold fixing die are provided in the circumferential direction.

Further, the method of manufacturing a molded electric motor according to the present invention is characterized in that the stator core is inserted into the mold fixing mold with the stator core fixing portion of the mold fixing mold as a guide.

In the molding die of the molding motor according to the present invention, the stator core is wound with an insulating portion,
In the molding die of the molding motor that molds the stator on which the board on which the position detection element is mounted is molded with mold resin, the inner peripheral hole of the board provided inside the position detection element for the rotor placement of the board And a mold fixing die for performing radial positioning by fitting to a substrate fixing notch provided on the inner peripheral surface of the inner peripheral hole of the substrate inside the position detecting element. A mold movable die for pressing the surface including the substrate fixing notch and fixing the substrate to perform molding.

Further, in the mold forming die of the mold electric motor according to the present invention, the mold fixing die has the center shaft, and the bearing housing forming portion fitted in the inner peripheral hole of the substrate is provided at the center of the upper portion of the center shaft. It is characterized by that.

Further, in the mold forming die of the mold motor according to the present invention, the mold fixing die has a center shaft, and the center shaft is provided with a mold fixing die substrate fixing portion fitted into the substrate fixing notch. It is characterized by that.

Further, the molding die of the molding motor according to the present invention is characterized in that the movable mold has a movable mold substrate fixing portion for pressing the surface including the substrate fixing notch.

Further, the molding die of the molding motor according to the present invention is characterized in that a plurality of mold movable die substrate fixing portions are provided.

Further, in the mold forming die of the mold motor according to the present invention, the mold fixing die is fitted into the slot opening of the stator core or the recess provided on the inner peripheral surface of the teeth of the stator core. It is characterized in that it is provided with a convex stator core fixing portion.

Further, in the molding die of the molding motor according to the present invention, the stator core fixing portion of the mold fixing die is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. Is characterized by.

Further, the mold forming die of the mold motor according to the present invention is characterized in that a plurality of stator core fixing portions of the mold fixing die are provided in the circumferential direction.

In the mold forming die of the mold electric motor according to the present invention, the mold fixing die has a center shaft, and the center fixing shaft is fitted with the substrate fixing notch, and the mold fixing die has a substrate fixing portion. It is characterized in that a slot opening of the stator core or a convex stator core fixing portion fitted into a recess provided on the inner peripheral surface of the teeth of the stator core is integrally provided.

The mold forming die of the mold motor according to the present invention is characterized in that the substrate fixing portion and the stator core fixing portion of the mold fixing die are provided in an L shape.

Further, the mold forming die of the mold motor according to the present invention is characterized in that the mold fixing die substrate fixing portion is provided with a fixing convex portion fitted to the substrate fixing notch at an end portion.

[0040]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. 1 is a sectional view of a general molded electric motor, FIGS. 2 to 14 are views showing a first embodiment, FIG. 2 is a perspective view of a stator having a winding and a substrate before assembly, and FIG. 3 is a winding. FIG. 4 is a perspective view showing a stator core after assembly of the stator and the substrate subjected to the step, FIG. 4 is a perspective view showing a combination of the stator core and a mold fixing die, and FIG. 5 is a stator core and a mold fixing metal. FIG. 6 is a cross-sectional view showing the positional relationship with the mold, FIG. 6 is a cross-sectional view showing the mold fixed mold after being inserted into the mold fixed mold and before the movable mold is closed, and FIG. 7 shows the arrangement of the mold fixed mold substrate fixing portion in the mold fixed mold. 8 is a top view showing the positional relationship between the teeth and grooves of the stator core when the stator core is inserted in the mold fixing die, FIG. 9 The number of mold fixing die substrate fixing portions is changed. 1 is a top view showing the arrangement of the position detection element in the case of FIG.
0 perspective view showing the layout of the mold fixing mold substrate fixing part and the mold movable mold substrate fixing part, Fig. 11 is a sectional view showing the fixed state of the substrate, Fig. 12 the substrate is fixed in the state where the mold clamping is completed. FIG. 14 is a cross-sectional view showing that the mold resin is injected after mold clamping and a state after the completion of molding by molding resin, and FIG. 14 is a perspective view showing the state of the product after completion of molding.

An outline of a general mold electric motor will be described with reference to FIG. In FIG. 1, the substrate 3 on which the position detecting element 2 is mounted is attached to the insulating portion 19 of the stator 26 provided with the winding 8, and the molded portion is formed by molding it with the molding resin 5. The molded electric motor is completed by combining the rotor 4 and the bracket 16 which are fitted to the shaft 17 to which is attached. The mold motor is a low-noise and highly accurate motor compared to the steel plate motor. In the case of molding, the position of the substrate 3 may move due to the pressure and flow of the resin, or the substrate 3 itself may be deformed, and countermeasures against it are necessary.

The molded electric motor of the present invention is shown in FIGS.
Will be described. The procedure up to molding is similar to that of a general molded motor, and the steps from the insulated stator to the winding are the same.

As shown in FIGS. 2 to 4, a plurality of insulating insertion holes 12 for fixing the board are set in the board 3 in the circumferential direction.
The board fixing insulating portion 18 is inserted into the insulating insertion hole 12 and is fixed by fusion bonding to form a stator 26. Then, wiring processing is performed. A substrate inner peripheral hole 31 for arranging the rotor is set in the substrate 3, and this substrate inner peripheral hole 31 is used for molding when the stator 26 is inserted into the mold fixing mold 30 for molding. It is to be inserted into the bearing housing forming portion 6 of the center shaft 32 of the fixed mold 30, but the dimensions of the two can be moved by hand if a lubricant is used. It is set to a fine fit with a clearance fit, which is a fit that can be done. A board fixing notch 13 is set around the board inner peripheral hole 31.

As shown in FIG. 8, the arrangement of the substrate fixing notches 13 is set at the same angle as the position of the slot opening 14 or the groove 23 from the center axis when viewed from the upper surface of the stator core 7.

As shown in FIGS. 4 and 5, the stator 26 is then inserted into the center shaft 32 of the mold fixing die 30.

The structure of the center shaft 32 incorporates parts as shown in FIG. The component is a mold fixing die substrate fixing portion 21, which has an L-shape extending from the side surface of the bearing housing forming portion 6 of the center shaft 32 to the side surface on which the stator core 7 abuts, and has a convex portion protruding in the upper surface direction. Is a fixed convex portion 22, and a portion corresponding to the side surface of the stator core 7 is a stator core fixing portion 28. It can be seen that it is linear when viewed from above the center shaft 32 (FIG. 7).

When the stator 26 is inserted into the mold fixing die 30, the stator core fixing portion 28 is inserted into the slot opening 14 of the stator core 7 or the groove 23 of the stator core so as to fit. The insulated and wound stator 9 is positioned on the center shaft 32 of the mold fixing die 30. When inserted, the circumferential and radial positions are preset (FIG. 8). Since the stator core fixing portion 28 also serves as a guide at the time of insertion, workability during mass production is improved and work time can be shortened.

After being inserted into the mold fixing die 30, FIG.
At this time, the fixing projection 22 is fitted into the board fixing notch 13, and the board inner peripheral hole 31 is also fitted into the bearing housing forming portion 6 of the center shaft 32, so that the board 3 is circumferentially moved. And the radial position is preset. In this state, the insulated and wound stator 9 and the substrate 3 are preliminarily set in the circumferential direction and the radial direction.

Originally, the mold fixing die substrate fixing portion 21 and the mold movable die substrate fixing portion 20 are effective even if only one is used, but by using a plurality of them, stable performance can be exerted (FIG. 9).

In the mold according to the present invention, the mold movable mold 29 and the mold fixed mold 30 may be replaced with each other. As for the mold fixing die substrate fixing portion 21, only one part of the die is replaced so that the number of slots can be changed.

Thereafter, by clamping the mold (FIG. 12), both the mold fixing mold substrate fixing portion 21 and the mold movable mold substrate fixing portion 20 are fixed in the axial direction.

As shown in the layout of FIG. 10, the mold can be moved in a large area including the surface where the fixing convex portion 22 of the mold fixing die substrate fixing portion 21 is fitted in the substrate fixing notch 13 of the substrate 3 and its periphery. The die substrate fixing portion 20 is pressed down when the die is clamped. At this time, the substrate 3 is fixed to both molds,
Moreover, since the board inner peripheral hole 31 is also fitted, the board inner peripheral hole 3
Positioning will be based on the vicinity of 1 (Fig. 1
1).

Looking at the position of the position detecting element 2, the distance from the central axis is outside the point where the substrate 3 is fixed. The reason why this positioning method is effective is as follows. The position accuracy required as an electric motor is the accuracy of the relative position of the substrate 3 with respect to the teeth 15 of the stator core, if the position detection element 2 is accurate with respect to the substrate 3. Therefore, if the accuracy is improved in the portion closer to the central portion of the electric motor, the positional accuracy is secured.

Conventionally, the insulating portion 1 for fixing the substrate on the outer periphery of the substrate 3
The board 3 was fixed only by 8, but in addition, the board 3 was fixed at a portion close to the central axis, and the slot opening 1
Even if the insulating portion 19 is deformed by the winding by fixing the stator 9 which is insulated and wound at 4, the accuracy is not affected even if the insulating portion 19 is deformed by the winding or during molding.

Even if the relative position between the teeth 15 of the stator core and the substrate 3 is displaced, the displacement is corrected by the mold clamping.

Molding is performed by injecting the mold resin 5 from the gate 25 to fill the mold cavity with the mold resin 5 and mold it as a mold part (FIG. 13).
At this time, the portion that is deformed by the pressure of the mold resin 5 is the portion that is not in contact with the mold fixing die substrate fixing portion 21, and as shown in FIG. Since the position detecting element 2 is positioned, it is not affected by the moving deformation due to resin pressure or the like.

After the molding, as shown in FIG. 14, the product has a recess similar to the shape of the mold, and the substrate fixing notch 13 of the substrate 3 can be seen. From here, defects of the substrate 3 due to molding can be found. For example, when excessive stress is applied during molding and the substrate 3 is deformed, the determination can be made from the depression. In addition, since the portion where the substrate is fixed by the mold is a dent, if it breaks during mold clamping, it will be found there. Therefore, since the product can be determined before assembling as an electric motor, the yield and reliability of the electric motor can be improved.

If the high-performance molded electric motor described in the above-mentioned embodiment is mounted on the blower, it is possible to control the rotational speed minutely, resulting in energy saving.

If the above-mentioned blower is used in an air conditioner, the same effect can be obtained.

[0060]

According to the molded motor of the first aspect of the present invention, the substrate inner peripheral hole for disposing the rotor on the substrate and the substrate fixing notch on the peripheral surface of the substrate inner peripheral hole are provided by the position detecting element. Is also provided inside, and during molding, the substrate inner peripheral hole is fitted in the mold fixing die for radial positioning, the substrate fixing notch is fitted in the mold fixing die for circumferential positioning, and Since the movable mold has a structure in which the surface including the substrate fixing notch is pressed and the substrate is fixed and molded, the position detecting element and the stator core are positioned by positioning inside the position detecting element. It is possible to provide a high-performance mold electric motor in which the positional accuracy of (1) is relatively improved, the substrate does not move during molding, and even if the substrate is deformed, its influence is small.

Further, in the molded motor according to claim 2 of the present invention, the inner peripheral hole of the substrate is fitted in the bearing housing forming portion arranged at the center of the upper part of the center shaft of the mold for fixing the mold, and the radial positioning is performed. By doing so, the positioning accuracy between the position detecting element and the stator core is relatively improved by performing the positioning inside the position detecting element.

Further, in the molded motor according to the third aspect of the present invention, the substrate fixing notch is fitted to the mold fixing die substrate fixing portion provided on the center shaft of the mold fixing die to perform circumferential positioning. By doing so, the positioning accuracy between the position detecting element and the stator core is relatively improved by performing the positioning inside the position detecting element.

Further, in the molded electric motor according to claim 4 of the present invention, the substrate fixing notch is fitted in the fixing convex portion provided at the end of the mold fixing die substrate fixing portion for circumferential positioning. By doing so, the positioning accuracy between the position detecting element and the stator core is relatively improved by performing the positioning inside the position detecting element.

Further, in the mold motor according to claim 5 of the present invention, since the substrate fixing portion of the movable mold for the mold presses the surface including the substrate fixing notch, the substrate does not move during the molding and the substrate is moved. Even if it is deformed, its influence is small and a high-performance molded electric motor can be provided.

Further, in the molded electric motor according to the sixth aspect of the present invention, a stable effect can be obtained by providing a plurality of substrate fixing portions of the movable mold for molding.

Further, in the molded electric motor according to claim 7 of the present invention, the convex stator core fixing portion of the mold fixing die is formed by the slot opening of the stator core or the teeth of the stator core during molding. By fitting into the recess provided on the inner peripheral surface and positioning the stator core, it is possible to prevent rotation in the circumferential direction and to achieve high precision and efficiency, and the stator core fixing portion is It serves as a guide when the stator is inserted, improving workability and reliability.

In the molded electric motor according to claim 8 of the present invention, the stator core fixing portion of the mold fixing die is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. Rotation in the circumferential direction can be prevented, and the stator core fixing portion serves as a guide when the stator is inserted, which facilitates insertion.

In the molded electric motor according to the ninth aspect of the present invention, a plurality of stator core fixing portions of the mold fixing die are provided in the circumferential direction, so that a stable effect can be exhibited.

According to a tenth aspect of the present invention, in the molding motor according to the tenth aspect of the present invention, after the molding is performed, the substrate is exposed in the recess where the movable mold for pressing the surface including the substrate fixing notch is removed after the molding. Since the arrangement of the substrates can be visually confirmed, the state of the substrates can be confirmed before assembling the electric motor, and a defect can be determined in advance, so that reliability as the electric motor is improved.

The mold electric motor according to claim 11 of the present invention determines the reliability as an electric motor by judging a defect at the time of mold clamping or mold molding from the state of the substrate exposed in the recess on the outer surface of the mold. Is improved.

A blower according to a twelfth aspect of the present invention uses the molded electric motor according to any one of the first to eleventh aspects, so that the rotational speed can be minutely controlled, resulting in energy saving.

The air conditioner according to a thirteenth aspect of the present invention uses the blower according to the twelfth aspect, so that the rotational speed of the blower can be finely controlled, resulting in energy saving.

According to a fourteenth aspect of the present invention, there is provided a mold motor manufacturing method, wherein a mold fixing die is fitted into an inner peripheral hole of a substrate provided inside a position detecting element for arranging a rotor of the substrate. Radial positioning, and the step of performing circumferential positioning by fitting a mold fixing die into the board fixing notch provided inside the position detection element on the peripheral surface of the board inner peripheral hole. And a step of pressing the surface of the movable mold including the substrate fixing notch to fix the substrate and mold the substrate, thereby positioning the position detecting element inside the position detecting element. It is possible to provide a high-performance mold electric motor in which the positional accuracy with respect to the stator core is relatively improved, the substrate does not move during molding, and even if the substrate is deformed, its influence is small.

According to a fifteenth aspect of the present invention, in the method of manufacturing a molded electric motor, the inner peripheral hole of the substrate is fitted in a bearing housing forming portion arranged at the center of the upper part of the center shaft of the mold for fixing the mold, and the hole is formed in the radial direction. Since the positioning is performed inside the position detecting element, the positional accuracy between the position detecting element and the stator core is relatively improved.

According to the sixteenth aspect of the present invention, in the method of manufacturing a molded electric motor, the substrate fixing notch is fitted to the mold fixing die substrate fixing portion provided on the center shaft of the mold fixing die to position in the circumferential direction. By doing so, the positioning accuracy between the position detecting element and the stator core is relatively improved by positioning inside the position detecting element.

According to the seventeenth aspect of the present invention, in the method of manufacturing a molded electric motor, the substrate fixing notch is fitted to the fixing convex portion provided at the end of the mold fixing die substrate fixing portion so that the substrate fixing notch is formed in the circumferential direction. Since the positioning is performed inside the position detecting element, the positional accuracy between the position detecting element and the stator core is relatively improved.

According to the eighteenth aspect of the present invention, in the method of manufacturing a molded electric motor, the substrate fixing portion of the movable mold has a surface including the substrate fixing notch,
Even if the substrate does not move during the molding process and the substrate is deformed, the influence thereof is small, and a high-performance molded electric motor can be provided.

In the method of manufacturing a molded motor according to the nineteenth aspect of the present invention, a stable effect can be obtained by using a plurality of substrate fixing portions of the movable mold.

According to a twentieth aspect of the present invention, in the method of manufacturing a molded electric motor, the convex stator core fixing portion of the mold fixing mold is the slot opening of the stator core or the stator core during molding. Since the stator core is positioned by fitting in the recesses provided on the inner peripheral surface of the teeth, it is possible to prevent rotation in the circumferential direction and improve accuracy and efficiency. The part serves as a guide when the stator is inserted, which improves workability and reliability.

According to a twenty-first aspect of the present invention, in the method of manufacturing a molded electric motor, the stator core fixing portion of the mold fixing die is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. As a result, rotation in the circumferential direction can be prevented, and the stator core fixing portion serves as a guide for inserting the stator, which facilitates insertion.

According to the twenty-second aspect of the present invention, the method of manufacturing a molded electric motor can exhibit a stable effect by providing a plurality of stator core fixing portions of the mold fixing die in the circumferential direction.

According to the twenty-third aspect of the present invention, in the method of manufacturing a molded electric motor, the stator core fixing portion of the mold fixing die is used as a guide to insert the stator core into the mold fixing die to improve workability. Is improved.

According to a twenty-fourth aspect of the present invention, there is provided a molding die for a molding motor, wherein a rotor for a substrate is arranged.
The radial positioning is performed by fitting the board inner peripheral hole provided inside the position detecting element, and the board fixing notch provided inside the position detecting element is provided on the peripheral surface of the board inner peripheral hole. By providing a mold fixing mold for fitting and positioning in the circumferential direction and a mold movable mold for pressing the surface including the substrate fixing notch and fixing the substrate for molding, the position detection element The positioning accuracy of the position detection element and the stator core is relatively improved by positioning inside, and the substrate does not move during molding, and even if the substrate is deformed, its effect is small and high performance mold. An electric motor can be provided.

According to a twenty-fifth aspect of the present invention, in the molding die of the molding motor, the mold fixing die has a center shaft, and the bearing housing is fitted in the inner peripheral hole of the substrate at the upper center of the center shaft. By providing the forming portion, the positioning accuracy between the position detecting element and the stator core is relatively improved by positioning inside the position detecting element.

According to a twenty-sixth aspect of the present invention, there is provided a mold fixing die for a mold motor, wherein the mold fixing die has a center shaft, and the center shaft is fitted in the substrate fixing notch. By providing the fixing portion, the positioning accuracy between the position detecting element and the stator core is relatively improved by positioning inside the position detecting element.

According to a twenty-seventh aspect of the present invention, the molding die of the molding motor is the movable mold of the mold.
Molded movable mold that holds down the surface including the board cutout.The board is fixed to the inside of the position detection element to improve the positional accuracy between the position detection element and the stator core. To do.

Further, the molding die of the molding motor according to the twenty-eighth aspect of the present invention can exhibit a stable effect by providing a plurality of mold movable die substrate fixing portions.

According to a twenty-ninth aspect of the present invention, the molding die of the molding motor is the mold fixing die,
Rotation in the circumferential direction can be prevented by providing a slot opening of the stator core or a convex stator core fixing part that fits into a recess provided on the inner peripheral surface of the teeth of the stator core. Therefore, the precision and efficiency can be improved, and the stator core fixing portion serves as a guide when the stator is inserted to improve workability and reliability.

According to a thirtieth aspect of the present invention, in the molding die of the molding motor, the stator core fixing portion of the mold fixing die extends in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. By being arranged, rotation in the circumferential direction can be prevented, and the stator core fixing portion serves as a guide for inserting the stator, which facilitates insertion.

Further, the molding die of the molding motor according to the thirty-first aspect of the present invention can exhibit a stable effect by providing a plurality of stator core fixing portions of the mold fixing die in the circumferential direction.

According to a thirty-second aspect of the present invention, there is provided a mold forming die for a mold motor, wherein the mold fixing die has a center shaft, and the center shaft is fitted into the substrate fixing notch. The position detecting element is provided by integrally providing the fixing portion and the slot opening of the stator core, or the convex stator core fixing portion fitted into the concave portion provided on the inner peripheral surface of the teeth of the stator core. By positioning the position more inside than that, the position accuracy of the position detection element and the stator core is relatively improved, and rotation in the circumferential direction can be prevented, resulting in high accuracy and high efficiency. The iron core fixing portion serves as a guide when the stator is inserted, improving workability and reliability.

According to a thirty-third aspect of the present invention, in the molding die of the molding motor, the substrate fixing portion and the stator core fixing portion of the mold fixing die are provided in the L-shape, so that the position detecting element is The positional accuracy with respect to the stator core is relatively improved, rotation in the circumferential direction can be prevented, and the stator core fixing part serves as a guide when inserting the stator, improving workability and reliability. You can improve your sex.

According to a thirty-fourth aspect of the present invention, there is provided a molding die for a molding motor, wherein the mold fixing die is provided with a fixing convex portion fitted to the substrate fixing notch at an end of the substrate fixing portion. By positioning inside the position detecting element, the positional accuracy between the position detecting element and the stator core is relatively improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a general mold motor.

FIG. 2 is a view showing the first embodiment and is a perspective view of a stator having a winding and a substrate before assembly.

FIG. 3 is a view showing the first embodiment and is a perspective view showing a stator core portion after assembling a stator with windings and a substrate.

FIG. 4 shows the first embodiment and is a perspective view showing a combination of a stator core and a mold fixing die.

FIG. 5 shows the first embodiment and is a cross-sectional view showing an arrangement relationship between a stator core and a mold fixing die.

FIG. 6 is a cross-sectional view showing the first embodiment and showing a state before the mold movable mold is closed after being inserted into the mold fixed mold.

FIG. 7 is a view showing the first embodiment and is a top view showing an arrangement of the mold fixing die substrate fixing portion in the mold fixing die.

FIG. 8 shows the first embodiment and is a top view showing a positional relationship between teeth and grooves of the stator core when the stator core is inserted in the mold fixing die.

FIG. 9 is a view showing the first embodiment and is a top view showing the arrangement of the position detection elements when the number of mold fixing die substrate fixing portions is changed.

FIG. 10 shows the first embodiment and is a perspective view showing a layout of a mold fixing die substrate fixing portion and a mold movable die substrate fixing portion.

FIG. 11 is a view showing the first embodiment and is a cross-sectional view showing a fixed state of the substrate.

FIG. 12 shows the first embodiment and is a cross-sectional view showing that the substrate is fixed in a state where the mold clamping is completed.

FIG. 13 is a view showing the first embodiment and is a cross-sectional view showing a state after the mold resin is injected and the molding is completed after mold clamping.

FIG. 14 shows the first embodiment and is a perspective view showing a state of the product after completion of molding.

FIG. 15 is a cross-sectional view showing a step of molding a stator in a conventional mold electric motor.

FIG. 16 is a cross-sectional view showing a molded state of a stator in another conventional molded electric motor.

[Explanation of symbols]

1 bearing, 2 position detecting element, 3 substrate, 4 rotor, 5 mold resin, 6 bearing housing forming part, 7 stator core, 8 windings, 9 insulating and winding stator, 10 ring part, 11 type Insertion part, 12 Insulation insertion hole, 13 Board fixing notch, 14 Slot opening, 15 Stator iron teeth, 16 Bracket, 17 Shaft, 18 Board fixing insulating part, 19
Insulating part, 20 Mold movable die substrate fixing part, 21
Mold fixing Mold substrate fixing part, 22 fixing convex part, 23
Groove, 24 Spacer, 25 Gate, 26 Stator, 27 Mold part, 28 Stator core fixing part, 29
Mold movable mold, 30 Mold fixed mold, 31
Substrate inner hole, 32 center shaft.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) // H02K 29/06 B29L 31:34 5H615 B29L 31:34 H02K 11/00 C (72) Inventor Mineo Yamamoto 2-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Inventor Hiroyuki Ishii 2-3-2 Marunouchi, Chiyoda-ku Sanryo Electric Co., Ltd. (72) Inventor Takashi Matsunaga Tokyo 2-3-2 Marunouchi, Chiyoda-ku Sanryo Electric Co., Ltd. F-term (reference) 4F202 AD02 AD18 AD19 AD35 AH33 CA30 CB12 CB20 CK25 CQ05 5H019 AA10 BB01 BB15 CC03 DD01 EE14 GG01 5H604 AA08 BB01 BB10 CC05 DB05 BB01 BB14 DB01 AA08 BB05 BB10 CC01 FF06 GG18 GG20 5H611 AA01 BB01 PP05 QQ03 UA01 UB02 5H615 AA01 BB01 BB14 BB17 PP01 PP06 PP28 SS44

Claims (34)

[Claims] 1. A mold electric motor in which a stator iron core is wound through an insulating portion and a stator mounted with a substrate on which a position detecting element is mounted is molded with a molding resin, wherein a rotor is arranged on the substrate. A substrate inner peripheral hole and a substrate fixing notch on the peripheral surface of the substrate inner peripheral hole are provided inside the position detecting element, and at the time of molding, the substrate inner peripheral hole is fitted into a mold fixing die to form a radius. Direction is determined, the substrate fixing notch is fitted to the mold fixing die for circumferential positioning, and the mold movable die presses the surface including the substrate fixing notch to fix the substrate. And a molded electric motor. 2. The inner peripheral hole of the substrate is fitted in a bearing housing forming portion arranged at the center of an upper portion of a center shaft of a mold for fixing a mold to perform radial positioning. Mold electric motor. 3. The substrate fixing notch is fitted to a mold fixing mold substrate fixing portion provided on a center shaft of the mold fixing mold to perform circumferential positioning. Molded electric motor as described. 4. The substrate fixing notch is fitted to a fixing convex portion provided at an end of the mold fixing die substrate fixing portion to perform circumferential positioning. Molded electric motor as described. 5. The mold electric motor according to claim 1, wherein a substrate fixing portion of the mold movable die presses a surface including the substrate fixing notch. 6. The mold electric motor according to claim 5, wherein a plurality of substrate fixing portions of the mold movable die are provided. 7. During molding, a convex stator core fixing portion of the mold fixing die is fitted into a slot opening of the stator iron core or a concave portion provided on the inner peripheral surface of the teeth of the stator iron core. The molded electric motor according to claim 1, wherein the stator core is positioned. 8. The mold according to claim 7, wherein the stator core fixing portion of the mold fixing die is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. Electric motor. 9. The mold electric motor according to claim 7, wherein a plurality of stator core fixing portions of the mold fixing die are provided in the circumferential direction. 10. The mold electric motor according to claim 1, wherein after molding, the substrate is exposed in a recess formed by removing a mold movable die that presses a surface including the substrate fixing notch. 11. The mold electric motor according to claim 10, wherein a defect at the time of mold clamping or mold molding is determined from the state of the substrate exposed in the recess on the outer surface of the mold. 12. A blower using the molded electric motor according to claim 1. 13. An air conditioner using the blower according to claim 12. 14. A method of manufacturing a molded motor, wherein a stator iron core is wound through an insulating portion and a stator mounted with a substrate on which a position detecting element is mounted is molded with a molding resin. In order to perform radial positioning by fitting a mold fixing die to the substrate inner peripheral hole provided inside the position detecting element, the position of the position on the peripheral surface of the substrate inner peripheral hole. A step of fitting the mold fixing die into the substrate fixing notch provided on the inner side of the detection element to perform positioning in the circumferential direction, and a mold movable die pressing a surface including the substrate fixing notch, A method of manufacturing a molded electric motor, comprising the steps of fixing a substrate and molding. 15. The inner peripheral hole of the substrate is fitted to a bearing housing forming portion arranged at the center of an upper portion of a center shaft of a mold for fixing a mold to perform radial positioning. Manufacturing method of the mold electric motor of. 16. The substrate fixing notch is fitted to a mold fixing die substrate fixing portion provided on a center shaft of the mold fixing die to perform circumferential positioning. Manufacturing method of the mold electric motor of. 17. The substrate fixing notch is fitted to a fixing convex portion provided at an end portion of the mold fixing die substrate fixing portion for positioning in the circumferential direction. A method for manufacturing the described molded electric motor. 18. The method of manufacturing a mold motor according to claim 14, wherein the substrate fixing portion of the mold movable die presses a surface including the substrate fixing notch. 19. The method of manufacturing a molded electric motor according to claim 18, wherein a plurality of substrate fixing portions of the movable mold are provided. 20. During molding, a convex stator core fixing portion of the mold fixing die is fitted into a slot opening of the stator iron core or a concave portion provided on an inner peripheral surface of a tooth of the stator iron core. 15. The method for manufacturing a molded electric motor according to claim 14, wherein the stator core is positioned. 21. The mold according to claim 20, wherein the stator core fixing portion of the mold fixing die is arranged on the outer peripheral surface of the center shaft of the mold fixing die so as to extend in the axial direction. Electric motor manufacturing method. 22. A plurality of stator core fixing portions of the mold fixing die are provided in a circumferential direction.
0. The method for manufacturing a molded electric motor according to item 0. 23. The method of manufacturing a mold electric motor according to claim 20, wherein the stator iron core fixing portion of the mold fixing die is used as a guide to insert the stator core into the mold fixing die. 24. A mold forming die of a molding motor, wherein a stator core is wound with an insulating portion, and a stator mounted with a substrate on which a position detecting element is mounted is molded with a molding resin. For the child arrangement, the radial position is determined by fitting the inner peripheral hole of the substrate provided inside the position detecting element, and the inner surface of the inner peripheral hole of the substrate is positioned inside the position detecting element. A mold fixing die that fits into the substrate fixing notch and is positioned in the circumferential direction to hold down the surface including the substrate fixing notch, and a mold movable die that fixes and molds the substrate. A mold forming die for a mold electric motor, characterized by comprising: 25. The mold fixing die has a center shaft, and a bearing housing forming portion fitted into the inner peripheral hole of the substrate is provided at the center of an upper portion of the center shaft. Molding die of the described molding motor. 26. The mold fixing die has a center shaft, and the center shaft is provided with a mold fixing die substrate fixing portion to be fitted in the substrate fixing notch. Molding die of the described molding motor. 27. The mold forming die of a mold electric motor according to claim 24, wherein the mold movable die includes a mold movable die substrate fixing portion that presses a surface including the substrate fixing notch. . 28. The mold forming die for a mold motor according to claim 27, wherein the mold movable die substrate fixing portion is provided in plural. 29. The mold fixing die comprises a slot-opening of the stator core or a convex stator core fixing portion fitted into a recess provided in the inner peripheral surface of the teeth of the stator core. The mold forming die of the mold electric motor according to claim 24. 30. The mold according to claim 29, wherein the stator core fixing portion of the mold fixing die is arranged so as to extend in the axial direction on the outer peripheral surface of the center shaft of the mold fixing die. Electric motor molding die. 31. A plurality of stator core fixing portions of the mold fixing die are provided in a circumferential direction.
9. A molding die for a molding motor according to item 9. 32. The mold fixing die has a center shaft, the mold fixing die substrate fixing portion fitted to the substrate fixing notch and the slot opening of the stator core, or the stator. The mold forming die for a molded electric motor according to claim 24, wherein a convex stator iron core fixing portion fitted into a concave portion provided on the inner peripheral surface of the teeth of the iron core is integrally provided. 33. The mold forming die for a mold electric motor according to claim 32, wherein the substrate fixing portion and the stator core fixing portion of the mold fixing die are provided in an L shape. 34. The mold electric motor according to claim 26, wherein the mold fixing die substrate fixing portion is provided with a fixing convex portion fitted to the substrate fixing notch at an end thereof. Molding dies.