WO2014155631A1 - モールド電動機および空調室外機 - Google Patents
モールド電動機および空調室外機 Download PDFInfo
- Publication number
- WO2014155631A1 WO2014155631A1 PCT/JP2013/059396 JP2013059396W WO2014155631A1 WO 2014155631 A1 WO2014155631 A1 WO 2014155631A1 JP 2013059396 W JP2013059396 W JP 2013059396W WO 2014155631 A1 WO2014155631 A1 WO 2014155631A1
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- WIPO (PCT)
- Prior art keywords
- bracket
- rotor
- electric motor
- mold
- stator
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Definitions
- the present invention relates to a molded electric motor and an air-conditioning outdoor unit.
- an electric motor has been proposed that employs a structure that reduces the axial current flowing in the bearing by covering the member that supports the outer ring of the bearing with resin or the like in order to prevent bearing failure due to electric corrosion.
- the conventional electric motor in order to prevent separation of the bearing and the insulating bracket, it is necessary to fit firmly, and there is a problem that workability in motor assembly is poor.
- a concave portion is formed on the side of the bearing bracket that contacts the insulating material, and the insulating material is provided with a convex portion corresponding to the concave portion, and the convex portion of the insulating material is the bearing.
- the present invention has been made in view of the above, and an object thereof is to obtain a molded electric motor and an air-conditioning outdoor unit capable of reducing vibration and noise.
- the present invention provides a mold stator obtained by applying a mold resin to a stator, a rotor provided inside the mold stator, and rotation of the rotor.
- a pair of bearings for supporting the child shaft and an inner peripheral portion of the opening formed at the axial end of the mold stator are fitted and supported by surrounding the outer ring of the bearing, and are made of an insulating resin. And an insulating bracket.
- the present invention since the number of positions where the rotor is positioned in the radial direction is reduced, the axial deviation between the center of the stator and the center of the rotor and the eccentricity of the rotor are suppressed. It is possible to reduce the effect.
- FIG. 1 is a side view of a molded electric motor according to Embodiment 1 of the present invention.
- FIG. 2 is a front view of the molded electric motor as seen from the direction of arrow A shown in FIG. 3 is a cross-sectional view taken along the line BB shown in FIG. 2 (longitudinal cross-sectional view of the mold motor shown in FIG. 1).
- FIG. 4 is a longitudinal sectional view of a conventional molded electric motor.
- FIG. 5 is a front view of the bracket as seen from the direction of arrow C shown in FIG.
- FIG. 6 is a front view of the bracket for explaining a first modification of the bracket.
- FIG. 7 is a side view of a molded electric motor for explaining a second modification of the bracket.
- FIG. 8 is a side view of a top-flow type air-conditioning outdoor unit on which the molded motor shown in FIG. 1 is mounted.
- FIG. 1 is a side view of a molded electric motor according to Embodiment 1 of the present invention.
- FIG. 2 is a front view of the molded electric motor as seen from the direction of arrow A shown in FIG. 3 is a cross-sectional view taken along the line BB shown in FIG. 2 (longitudinal cross-sectional view of the mold motor shown in FIG. 1).
- FIG. 4 is a longitudinal sectional view of a conventional molded electric motor.
- FIG. 5 is a front view of the bracket as seen from the direction of arrow C shown in FIG.
- FIG. 6 is a front view of the bracket for explaining a first modification of the bracket.
- FIG. 7 is a side view of a molded electric motor for explaining a second modification of the bracket.
- FIG. 8 is a side view of a top-flow type air-conditioning outdoor unit on which the molded motor shown in FIG. 1 is mounted.
- Molded motor 100 includes, as main components, mold stator 8 integrally formed with stator core 8a with thermosetting resin 2 such as BMC (Bulk Molding Compound), and stator core 8a.
- a rotor 10 having a plurality of permanent magnets arranged to face the inner periphery, a rotor shaft 1 fixed to the central portion of the rotor 10, and a pair of bearings 11 that support the rotor shaft 1; 12, an outer bracket of one of the bearings 12, an insulating bracket 13 fitted to the inner diameter side of the mold stator 8 from the axially opposite load side of the mold stator 8, and the opposite side of the opposite side of the insulating bracket 13 And a bracket 3 that is fixed to the opposite end portion of the mold stator 8.
- a load is connected to the rotor shaft 1, and the rotor 10 obtains a rotational force by a rotating magnetic field from the stator core 8a and transmits torque to the rotor shaft 1 to drive the load.
- the side to which the load of the molded electric motor 100 is connected is expressed as “load side”, and the side to which no load is connected is expressed as “anti-load side”.
- BMC having high dimensional stability is used for the resin 2, and an opening (not shown) is formed on the axially opposite load side of the mold stator 8.
- the bracket 3 is provided with a plurality of mounting holes 3b for fixing the molded motor 100 in the vicinity of the corners (four corners) of the insulating bracket 13 (see FIG. 2).
- a plurality of air holes 3 a are formed in the bracket 3. Since these air holes 3a are provided for the purpose of improving aerodynamic characteristics and heat dissipation, the position, size, number, etc. thereof may be arbitrary.
- the bracket 3 is provided when the bracket 3 is fixed to the insertion hole 3e of the screw 6 used when the insulating bracket 13 is fixed to the bracket 3 and the plurality of leg portions 2a extending radially outward from the outer peripheral side of the resin 2.
- An insertion hole 3d for the screw 4 to be used is formed (see FIGS. 3 and 5).
- the bracket 3 has a planar surface (load side surface 3c) facing the insulating bracket 13 and the mold stator 8.
- the bracket 3 is fixed by screws 4 so as to be in contact with the anti-load side surface 13 f of the insulating bracket 13 and the leg portion 2 a of the resin 2.
- the rotor 10 is positioned in the radial direction by the insulating bracket 13, and the bracket 3 does not need to be positioned in the radial direction. Therefore, the bracket 3 does not need to have an uneven shape like a bracket 3A (see FIG. 4) described later, and the load side surface 3c can be configured as a flat surface, thereby reducing processing costs.
- the rib process for preventing the bending accompanying having comprised the bracket 3 in planar shape, the process of the hole for drawing out the wiring connected to the coil
- the bracket 3 may be made of metal or the same material as the insulating bracket 13.
- the strength of the rotor shaft 1 in the axial direction can be increased compared to the case where the bracket 3 is made of BMC.
- the fan 20 see FIG. 8
- a large force is applied in the axial direction of the rotor shaft 1, so that the strength in the axial direction may be insufficient with the insulating bracket 13 alone.
- the strength of the insulating bracket 13 with respect to the axial direction of the rotor shaft 1 can be supplemented.
- the dimensional tolerance increases in proportion to the thickness of the sheet metal.
- the sheet metal thickness t ⁇ 5% ⁇ gap G ⁇ 5% (sheet metal thickness t ⁇ gap G) is required. That is, when the thickness of the sheet metal is greater than or equal to the gap G, the amount of eccentricity exceeds 5%. Therefore, when the bracket 3 is manufactured with a sheet metal having a thickness greater than or equal to the gap G, the bracket 3 is provided with high accuracy. Post-processing is required. It is possible to increase the press processing accuracy even when the thickness of the sheet metal is increased in this way, but the equipment is increased in size and maintenance, such as increased press force or increased wear of the mold. Processing costs increase.
- the rotor 10 is positioned in the radial direction by the insulating bracket 13, and the bracket 3 does not require radial positioning. Therefore, even when the bracket 3 is manufactured using a metal sheet metal, post-processing for ensuring the radial positioning accuracy with respect to the bracket 3 is not required, and the manufacturing cost of the molded electric motor 100 is increased. There is no.
- the strength of the rotor shaft 1 in the axial direction can be increased as compared with the bracket 3 made of aluminum of the same volume.
- the strength of the rotor shaft 1 in the axial direction can be increased by configuring the bracket 3 with iron.
- the bracket 3 may be formed by aluminum die casting (die casting). Aluminum has a lower specific gravity than iron and can be formed at a low cost, but it is not accurate and requires post-processing.
- the rotor 10 is positioned in the radial direction by the insulating bracket 13, and the bracket 3 does not need to be positioned in the radial direction. Therefore, even when the bracket 3 is manufactured by aluminum die-casting, post-processing for securing the radial positioning accuracy with respect to the bracket 3 is unnecessary, and the weight can be reduced without increasing the manufacturing cost of the mold motor 100. Can be planned.
- the insulating bracket 13 is formed with a recess 13a that protrudes from the load side to the anti-load side at the center of the surface (load side surface 13e) facing the rotor 10 (see FIG. 3).
- the recess 13a has an inner diameter that is substantially equal to the diameter of the outer ring 12c of the bearing 12. As a result, the outer ring 12 c of the bearing 12 is held in the recess 13 a of the insulating bracket 13.
- the outer peripheral portion 13 b of the insulating bracket 13 has a diameter that is substantially equal to the inner diameter of the inner peripheral portion 2 b in the opening of the mold stator 8. As a result, the insulating bracket 13 is held by the mold stator 8. In addition, when the dimensional tolerance of the outer peripheral part 13b of the insulation bracket 13 and the dimensional tolerance of the inner peripheral part of the recessed part 13a are large, the positioning accuracy of the rotor 10 with respect to the radial direction is affected. Therefore, it is desirable to form the dimensions of the insulating bracket 13 with high accuracy.
- the bracket 3 is installed on the anti-load side surface 13f of the insulating bracket 13, and the screw 6 is inserted into the insertion hole 13d of the insulating bracket 13 and the insertion hole 3e of the bracket 3,
- the bracket 3 is fixed to the insulating bracket 13 by tightening the screw 6 into the nut 5 (see FIG. 1).
- the strength of the rotor shaft 1 in the axial direction is increased by fixing the bracket 3 to the insulating bracket 13. be able to.
- the bearings 11 and 12 are first press-fitted into the load side of the rotor shaft 1, and the rotor 10 into which the bearings 11 and 12 are press-fitted is molded.
- the stator 8 is inserted into the mold stator 8 through the opening on the side opposite to the load.
- the screw 6 inserted into the insulating bracket 13 is exposed to the side opposite to the load of the bracket 3, and the nut 7 is fastened to the screw 6.
- the insulating bracket 13 is fitted into the inner peripheral portion 2 b of the mold stator 8.
- the screws 4 are inserted into the leg portions 2 a of the mold stator 8, and the nuts 5 are fastened to the screws 4 exposed on the anti-load side surface of the bracket 3, thereby completing the molded electric motor 100.
- the rotor 1 since the rotor 1 includes a magnet, when the rotor 10 is assembled to the mold stator 8, the rotor 10 is attracted to the stator core 8a and tilts. In this state, when the bearing 12 installed on the insulating bracket 13 is assembled to the rotor shaft 1 of the rotor 10, the center of the mold stator 8 and the center of the insulating bracket 13 are eccentric. Therefore, the corner portion 13g between the load side surface 13e of the insulating bracket 13 and the outer peripheral portion 13b of the insulating bracket 13 interferes with the mold stator 8 and the assemblability deteriorates. Therefore, in the molded electric motor 100 according to the present embodiment, the corner portion 13g is chamfered or rounded.
- the chamfering or rounding is processed so that the dimension thereof is larger than, for example, the above-described gap G (see FIG. 3). As a result, the assemblability can be improved. Further, the same processing is performed on the corner portion of the inner peripheral portion 2b of the mold stator 8, or the corner portion 13g between the outer peripheral portion 13b of the insulating bracket 13 and the corner portion of the inner peripheral portion 2b of the mold stator 8. The effect can be shown even if applied to both.
- the bracket 3 according to the present embodiment is configured such that the thickness in the axial direction is larger than the gap G. As described above, since it is not possible to allow an eccentric amount of 5% or more of the gap G, it is desirable to secure a thickness of the bracket 3 that is equal to or greater than the gap G. Processing is required. In the molded electric motor 100 according to the embodiment, since the rotor 10 is positioned in the radial direction by the insulating bracket 13, the bracket 3 does not need to be positioned in the radial direction. Therefore, even when the thickness of the bracket 3 is configured to be larger than the gap G, post-processing for obtaining dimensional accuracy in the radial direction is unnecessary and the processing cost is not increased.
- the anti-load side surface 13f of the insulating bracket 13 is formed with a protrusion 13c that protrudes toward the anti-load side (the bracket 3 side).
- the bracket 3 has a recess 3f formed at a position corresponding to the protrusion 13c.
- the recess 3f in the illustrated example is formed in a hole shape penetrating the bracket 3 in the axial direction
- the shape of the recess 3f is not limited to the illustrated example, and may be formed in a concave shape that does not penetrate.
- the rotating electrical machine 100A In order to suppress the occurrence of such electrolytic corrosion, it is effective to reduce the axial current by disposing an insulating material on the axial current flow path.
- the outer ring 12c of the bearing 12 disposed on the anti-negative load side of the rotor shaft 1 is held by the insulating bracket 13 in order to reduce the current.
- a metal bracket 3A is used in the conventional molded electric motor 100A shown in FIG. 4, a metal bracket 3A is used.
- an annular ring portion 3A1 is formed at the center of the surface facing the rotor 10, and an annular ring portion 3A3 is formed on the outer peripheral side of the surface facing the rotor 10.
- An insulating bracket 13A is provided on the inner peripheral portion 3A2 of the annular portion 3A1, and the inner diameter of the annular portion 3A1 is formed to be approximately equal to the diameter of the insulating bracket 13A.
- the outer peripheral portion 3A4 of the annular portion 3A3 has a diameter that is substantially equal to the inner diameter of the inner peripheral portion 2b in the vicinity of the opening of the mold stator 8.
- the outer ring 12c of the bearing 12 holds the inner peripheral portion 3A2 of the insulating bracket 13, and the insulating bracket 13A is fitted into the annular portion 3A1 of the bracket 3A. Therefore, since the insulating material is interposed on the axial current flow path, the axial current is reduced.
- the rotor 10 is positioned in the radial direction. That is, as the positioning location of the molded motor 100A, the portion (positioning location a) where the inner peripheral portion 13A2 of the insulating bracket 13A covering the outer ring 12c and the outer ring 12c are in contact (positioning location a), the outer peripheral portion 13A1 of the insulating bracket 13A and the inner periphery of the annular portion 3A1 There are a portion where the portion 3A2 is in contact (positioning portion b), a portion where the inner peripheral portion 2b of the resin 2 is in contact with the outer peripheral portion 3A4 of the annular portion 3A3 (positioning portion c), and the like.
- the position where the rotor is positioned in the radial direction is reduced as compared with the conventional mold motor 100A.
- the positioning location of the molded motor 100 as shown in FIG. 3, the portion (positioning location a) where the inner diameter portion of the recess 13a contacts the outer ring 12c, the outer peripheral portion 13b of the insulating bracket 13 and the mold fixing
- the recess 3f of the bracket 3 shown in FIG. 6 is located on the inner side of the region (dotted line portion) formed by projecting the outer diameter D of the outer ring 12c toward the bracket 3 with a portion 3f1 of the recess outer contour.
- the other part 3f2 of the hollow outline is formed so as to be located outside the diameter of this region.
- the outer diameter of the recess 3f may be made larger than that of the example of FIG. That is, you may form so that the outline of the hollow 3f may be located in the diameter outer side of the area
- bracket 3 In order to improve the strength of the bracket 3, it is effective to bend a part of the bracket 3 as shown in FIG. 7 or to provide a rib (not shown) on the bracket 3.
- a part of the bracket 3 As shown in FIG. 7 or to provide a rib (not shown) on the bracket 3.
- the bending portion 3g can increase the strength of the bracket 3 with respect to the axial direction of the rotor shaft 1. Further, it is not necessary to increase the processing accuracy of the bent portion 3g, and the processing cost is not increased.
- the bracket 3 may be fixed to the mold stator 8 by adhesion or caulking instead of the screw 4.
- the screws 4 it is desirable to fix the bracket 3 using the screws 4 because the assemblability is improved and the tightening can be managed.
- the bracket 3 is fixed to the insulating bracket 13 using the screw 6, but another fixing method may be used. Further, when the bracket 3 is made of the same material as that of the insulating bracket 13 and the bracket 3 is integrally formed with the insulating bracket 13, the screw 6 is not necessary. As another example, even when the material of the bracket 3 is different from the material of the insulating bracket 13, the screw 6 is not necessary when the bracket 3 is formed integrally with the insulating bracket 13. Further, in the molded motor 100 according to the present embodiment, the bracket 3 is installed on the anti-load side surface 13f of the insulating bracket 13 as an example, but the rotor shaft 1 is pressed by press-fitting the insulating bracket 13 into the mold stator 8.
- the bracket 3 may be omitted. Even in that case, the mold motor 100 can be fixed to an outdoor unit or the like by using the leg 2a of the mold stator 8, for example.
- a protrusion (not shown) that protrudes toward the inner peripheral portion 2b side of the mold stator 8 is provided on the outer peripheral portion 13b of the insulating bracket 13, and this protrusion is provided on the inner peripheral portion 2b of the mold stator 8.
- the insulating bracket 13 affects the positioning accuracy of the rotor 10 in the radial direction, it is desirable that the size of the insulating bracket 13 be formed with high accuracy. Therefore, it is desirable to use BMC having a small shrinkage ratio and linear expansion coefficient during molding as the material of the insulating bracket 13. By using BMC, the dimensional stability is improved, and the insulating bracket 13 can be configured with higher accuracy than other resins.
- FIG. 8 shows an example in which the molded motor 100 according to the present embodiment is used as a top flow type air conditioner.
- the top flow type air conditioner is a heat exchanger 22 provided on a side surface of a housing 23.
- An air inlet 24 provided on the side surface of the housing 23 so that air flows through the heat exchanger 22, and an air outlet 21 that discharges the air that has flowed through the heat exchanger 22 to the upper surface of the outdoor unit.
- a fan 20 for taking in air from the side of the outdoor unit into the unit and discharging the air from the air outlet 21 to the outside of the unit, and a fan motor interposed between the heat exchanger 22 and the fan 20 and rotating the fan 20 And a molded electric motor 100. Then, by fixing the mounting hole 3b (see FIG.
- the molded electric motor 100 is installed in the top flow type air conditioning outdoor unit.
- the top flow type air-conditioning outdoor unit configured as described above, when a compressor (not shown) in the outdoor unit operates, the refrigerant circulates in the heat exchanger 22, and the air and the refrigerant around the heat exchanger 22 Heat exchange is performed between the air intake and the air, and air is taken into the outdoor unit from the air suction port 24 by rotation of the fan 20, and the air generated at this time flows through the heat exchanger 22 to exchange heat. Prompted.
- an air outlet 21 is provided on the upper surface, and the rotor shaft 1 of the molded electric motor 100 faces the upper surface. Accordingly, the weight of the rotor 10 and the reaction force of the blades 25 are transmitted to the bearings 11 and 12 below the rotor shaft 1 through the rotor shaft 1. Therefore, the oil film of the bearings 11 and 12 becomes thin, and the shaft current easily flows. Further, it is necessary to ensure the strength of the insulating bracket 13 and the bracket 3 (see FIG. 3) in the axial direction. In particular, since the load of the fan motor is the blades 25, the top flow type air conditioner has little noise other than the motor, and therefore, it is required to reduce the noise of the motor.
- the bracket 3 can ensure the strength in the axial direction of the rotor shaft 1 and suppress the eccentricity of the rotor 10. Therefore, noise can be reduced. Therefore, it can be said that the molded electric motor 100 has a structure suitable for a top flow type air conditioner.
- bracket 3 and the insulating bracket 13 described in the present embodiment may be applied to the bearing 11 side, and even in this case, the same effects as the various effects described above can be obtained.
- the mold motor 100 includes the mold stator 8 formed by applying the mold resin to the stator 8a, the rotor 10 provided inside the mold stator 8, and the rotor 10. Are fitted to a pair of bearings 11 and 12 that support the rotor shaft 1 and an inner peripheral portion 2b of an opening formed at an axial end of the mold stator 8, and surrounds and supports an outer ring 12c of the bearing 12. And an insulating bracket 13 made of an insulating resin.
- the molded motor and the air-conditioning outdoor unit shown in the present embodiment show an example of the contents of the present invention, and can be combined with another known technique. Of course, it is possible to change and configure such as omitting a part without departing from the scope.
- the present invention can be applied to a molded electric motor and an air-conditioning outdoor unit, and is particularly useful as an invention that can reduce vibration and noise.
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Abstract
Description
図1は、本発明の実施の形態1に係るモールド電動機の側面図である。図2は、図1に示される矢印Aの方向からみたモールド電動機の正面図である。図3は、図2に示されるB-B矢視の断面図(図1に示されるモールド電動機の縦断面図)である。図4は、従来のモールド電動機の縦断面図である。図5は、図3に示される矢印Cの方向からみたブラケットの正面図である。図6は、ブラケットの第1の変形例を説明するためブラケットの正面図である。図7は、ブラケットの第2の変形例を説明するためモールド電動機の側面図である。図8は、図1に示されるモールド電動機が搭載されたトップフロー型空調室外機の側面図である。
Claims (15)
- 固定子にモールド樹脂を施して成るモールド固定子と、
前記モールド固定子の内部に設けられる回転子と、
前記回転子の回転子軸を支持する一対の軸受と、
前記モールド固定子の軸方向端部に形成された開口部の内周部に嵌め合わされ、前記軸受の外輪を取り囲んで支持し、絶縁性の樹脂で構成される絶縁ブラケットと、
を備えたことを特徴とするモールド電動機。 - 前記絶縁ブラケットは、前記回転子と対向する面と前記絶縁ブラケットの外周部との間の角部が、面取りまたは丸取りされ、かつ、面取りまたは丸取りの寸法が前記回転子と前記固定子との間の径方向の空隙よりも大きな値となるように形成されていることを特徴とする請求項1に記載のモールド電動機。
- 前記絶縁ブラケットの反回転子側には、少なくとも前記モールド固定子に固定されるブラケットが設置されことを特徴とする請求項1または2に記載のモールド電動機。
- 前記ブラケットは金属で構成されていることを特徴とする請求項3に記載のモールド電動機。
- 前記ブラケットはアルミダイキャストで構成されていることを特徴とする請求項3に記載のモールド電動機。
- 前記ブラケットは鉄で構成されていることを特徴とする請求項3に記載のモールド電動機。
- 前記ブラケットは、その軸方向の厚さが前記回転子と前記固定子との間の径方向の空隙よりも大きな値となるように構成されていることを特徴とする請求項3~6の何れか1つに記載のモールド電動機。
- 前記ブラケットは、前記絶縁ブラケットおよび前記モールド固定子と対向する面が平面状に形成されていることを特徴とする請求項3~7の何れか1つに記載のモールド電動機。
- 前記絶縁ブラケットの反回転子側には、反回転子側に突となる突起が形成され、
前記ブラケットには、この突起に対応した位置に窪みが形成されていることを特徴とする請求項3~8の何れか1つに記載のモールド電動機。 - 前記窪みは、その直径が前記軸受の外径より小さく形成されていることを特徴とする請求項9に記載のモールド電動機。
- 前記窪みは、この窪みの外郭の一部が前記軸受の外輪の外径を前記ブラケットに向かって投影してなる領域の径内側に位置し、かつ、前記外郭の他の部分がこの領域の径外側に位置するように形成されていることを特徴とする請求項9に記載のモールド電動機。
- 前記絶縁ブラケットの外周部には、前記モールド固定子の内周部側に向かって突となる突起が形成され、
前記モールド固定子の内周部には、この突起に対応した位置に窪みが形成されていることを特徴とする請求項1~11の何れか1つに記載のモールド電動機。 - 前記ブラケットは、前記モールド固定子と対向する位置よりも径外側の部分が軸方向に折り曲げられていることを特徴とする請求項3~12の何れか1つに記載のモールド電動機。
- 前記絶縁ブラケットの材料は、BMC(Bulk Molding Compound)であることを特徴とする請求項1~13の何れか1つに記載のモールド電動機。
- 側面に空気吸込口を有すると共に上面に空気吹出口を有するトップフロー型空調機のファンモータとして、請求項1~14の何れか1つに記載のモールド電動機を用いたことを特徴とする空調室外機。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015507821A JP5951114B2 (ja) | 2013-03-28 | 2013-03-28 | モールド電動機および空調室外機 |
PCT/JP2013/059396 WO2014155631A1 (ja) | 2013-03-28 | 2013-03-28 | モールド電動機および空調室外機 |
CN201380074639.8A CN105075075B (zh) | 2013-03-28 | 2013-03-28 | 模制电动机及空调室外机 |
EP13880547.8A EP2980965B1 (en) | 2013-03-28 | 2013-03-28 | Molded motor and outdoor air conditioning unit |
US14/772,123 US9853520B2 (en) | 2013-03-28 | 2013-03-28 | Molded motor and air-conditioning outdoor unit |
CN201420138766.1U CN203813574U (zh) | 2013-03-28 | 2014-03-25 | 模制电动机及空调室外机 |
Applications Claiming Priority (1)
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PCT/JP2013/059396 WO2014155631A1 (ja) | 2013-03-28 | 2013-03-28 | モールド電動機および空調室外機 |
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WO2014155631A1 true WO2014155631A1 (ja) | 2014-10-02 |
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PCT/JP2013/059396 WO2014155631A1 (ja) | 2013-03-28 | 2013-03-28 | モールド電動機および空調室外機 |
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US (1) | US9853520B2 (ja) |
EP (1) | EP2980965B1 (ja) |
JP (1) | JP5951114B2 (ja) |
CN (2) | CN105075075B (ja) |
WO (1) | WO2014155631A1 (ja) |
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SE542616C2 (en) * | 2018-09-27 | 2020-06-16 | Leine & Linde Ab | Rotary encoder and method for manufacturing a rotary encoder |
WO2021019590A1 (ja) * | 2019-07-26 | 2021-02-04 | 三菱電機株式会社 | 電動機、送風機、空気調和装置および電動機の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0993898A (ja) * | 1995-09-28 | 1997-04-04 | Matsushita Seiko Co Ltd | 無刷子電動機 |
JPH09275653A (ja) * | 1996-04-04 | 1997-10-21 | Shibaura Eng Works Co Ltd | モールドモータ |
JP3635948B2 (ja) | 1998-11-17 | 2005-04-06 | 三菱電機株式会社 | 回転電機 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19818059B4 (de) | 1998-04-22 | 2005-06-23 | Interelectric Ag | Wälzlageranordnung für Elektrokleinmotoren |
JP4718260B2 (ja) | 2005-07-08 | 2011-07-06 | 日本電産テクノモータホールディングス株式会社 | モールドモータ |
JP5438383B2 (ja) | 2008-09-29 | 2014-03-12 | 山洋電気株式会社 | モールドモータ |
CN102369652B (zh) | 2009-04-28 | 2014-10-08 | 松下电器产业株式会社 | 电动机和具有该电动机的电设备 |
JP5121948B2 (ja) | 2011-01-18 | 2013-01-16 | 三菱電機株式会社 | モールド電動機及び空気調和機 |
JP5703862B2 (ja) * | 2011-03-11 | 2015-04-22 | 株式会社ジェイテクト | 電動モータユニットおよび電動ポンプユニット |
JP5312519B2 (ja) | 2011-05-20 | 2013-10-09 | 三菱電機株式会社 | 電動機および空調機 |
CN202395571U (zh) * | 2011-12-06 | 2012-08-22 | 佛山市南海区东唐电机厂 | 外转子直流无刷电动机 |
-
2013
- 2013-03-28 JP JP2015507821A patent/JP5951114B2/ja active Active
- 2013-03-28 EP EP13880547.8A patent/EP2980965B1/en active Active
- 2013-03-28 WO PCT/JP2013/059396 patent/WO2014155631A1/ja active Application Filing
- 2013-03-28 US US14/772,123 patent/US9853520B2/en active Active
- 2013-03-28 CN CN201380074639.8A patent/CN105075075B/zh active Active
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2014
- 2014-03-25 CN CN201420138766.1U patent/CN203813574U/zh not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0993898A (ja) * | 1995-09-28 | 1997-04-04 | Matsushita Seiko Co Ltd | 無刷子電動機 |
JPH09275653A (ja) * | 1996-04-04 | 1997-10-21 | Shibaura Eng Works Co Ltd | モールドモータ |
JP3635948B2 (ja) | 1998-11-17 | 2005-04-06 | 三菱電機株式会社 | 回転電機 |
Also Published As
Publication number | Publication date |
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CN105075075B (zh) | 2017-10-03 |
EP2980965A1 (en) | 2016-02-03 |
US9853520B2 (en) | 2017-12-26 |
JPWO2014155631A1 (ja) | 2017-02-16 |
JP5951114B2 (ja) | 2016-07-13 |
CN105075075A (zh) | 2015-11-18 |
EP2980965A4 (en) | 2016-11-23 |
CN203813574U (zh) | 2014-09-03 |
US20160013699A1 (en) | 2016-01-14 |
EP2980965B1 (en) | 2021-03-03 |
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