WO2019130927A1 - Dispositif d'entraînement de ventilateur - Google Patents

Dispositif d'entraînement de ventilateur Download PDF

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Publication number
WO2019130927A1
WO2019130927A1 PCT/JP2018/043169 JP2018043169W WO2019130927A1 WO 2019130927 A1 WO2019130927 A1 WO 2019130927A1 JP 2018043169 W JP2018043169 W JP 2018043169W WO 2019130927 A1 WO2019130927 A1 WO 2019130927A1
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WO
WIPO (PCT)
Prior art keywords
motor shaft
fan
center
rotor housing
tip
Prior art date
Application number
PCT/JP2018/043169
Other languages
English (en)
Japanese (ja)
Inventor
竹内　徳久
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2019130927A1 publication Critical patent/WO2019130927A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present disclosure relates to a fan drive.
  • the motor includes a motor shaft fixed to a center piece, a rotor rotating around the shaft axis, and a bottomed cylindrical rotor housing which is integrally rotated with the rotor and disposed so as to cover the rotor. Is equipped.
  • a rotor covered with a bottomed cylindrical rotor housing rotates around the axial center of a shaft fixed to the center piece.
  • the structure in which the fan 90 is screwed to the rotor housing 95 by using a plurality of screw holes 951 provided in the rotor housing 95 of the motor 94. investigated.
  • the rotor housing 95 has a plurality of screw holes 951 for fastening the screws 96 for fixing the fan 90, and a circle at a position radially outward from the rotation center of the rotor housing 95 by a predetermined length.
  • a plurality of arc-shaped elongated holes 952 are formed.
  • the cylindrical portion 90a of the fan 90 is set so that the plurality of screw holes 951 of the rotor housing 95 and the plurality of holes 901 formed in the fan 90 coincide with each other.
  • the housing 95 is arranged to be covered from the outside.
  • a plurality of pins (not shown) erected on the surface of the fan 90 on the side of the rotor housing 95 are inserted into the long holes 952 formed in the rotor housing 95 to position the fan 90.
  • the electric motor described above has a plurality of pins erected on the shaft center of the motor shaft, that is, the dimensional dispersion between the rotation center of the rotor housing 95 and the long hole 952 and the fan 90 on the rotor housing 95 side.
  • the fan 90 is fixed to the rotor housing 95 in such a method that the fan 90 is positioned using the plurality of elongated holes 952 formed at positions separated radially outward from the rotation center of the rotor housing 95 by a predetermined length. In this case, a deviation is likely to occur between the axial center of the motor shaft and the rotational center of the fan 90.
  • the present disclosure aims to improve the positioning accuracy of the fan when fixing the fan to the rotor housing.
  • a fan drive device includes a motor shaft having one end fixed to a center piece, a rotor having a rotor housing rotating about the axis of the motor shaft, and a rotor housing fixed to the rotor housing.
  • the guide unit guides the motor shaft such that the axis of the motor shaft and the rotational center of the fan coincide with each other by fitting with the motor shaft, and therefore, the fan is fixed to the rotor housing.
  • the positioning accuracy of the fan can be improved.
  • parenthesized reference symbol attached to each component etc. shows an example of the correspondence of the component etc. and the specific component etc. as described in the embodiment to be described later.
  • FIG. 3 is an enlarged sectional view taken along the line III-III in FIG. It is an IV arrow line view in FIG. It is an III-III enlarged sectional view corresponding to a fan drive concerning a 2nd embodiment. It is VI arrow line view which looked at center parts in FIG. It is an III-III enlarged sectional view corresponding to the fan drive device concerning a 3rd embodiment. It is a figure for demonstrating assembly
  • III-III enlarged sectional view corresponding to the center part of the fan drive device concerning a 4th embodiment. It is an III-III enlarged sectional view corresponding to the center part of the fan drive device concerning a 5th embodiment. It is IV arrow line view corresponding to the center part of the fan drive device which concerns on 6th Embodiment. It is IV arrow line view corresponding to the center part of the fan drive device which concerns on 7th Embodiment. It is an III-III enlarged sectional view corresponding to the center part of the fan drive device concerning an 8th embodiment. It is a figure showing assembly of the fan to the conventional motor.
  • the fan drive device includes an outer rotor type brushless motor 10 and a fan 50 rotationally driven by the brushless motor 10.
  • the brushless motor 10 is suitably used, for example, as a fan motor for a vehicle, and is fixed to the vehicle body such that the motor shaft 12 is disposed along the horizontal direction.
  • the brushless motor 10 includes a motor shaft 12, a rotor 14, a stator 16, a center piece 18, a circuit board 20, a connector member 22, and a board case 24.
  • the rotor 14 includes a rotor housing 26 and a rotor magnet 28.
  • the rotor housing 26 has a cylindrical bearing accommodating portion 30 provided radially outward of the motor shaft 12 and a bottomed cylindrical outer cylindrical portion 32 formed radially outward of the bearing accommodating portion 30. ing.
  • a rotor magnet 28 is provided on the inner circumferential surface of the outer cylindrical portion 32.
  • One axial direction side of the outer cylinder portion 32 is opened, and a bottom wall portion 34 is formed on the other axial direction side of the outer cylinder portion 32.
  • the above-mentioned bearing accommodating portion 30 extends from the central portion of the bottom wall portion 34 to the center piece 18 side.
  • the bearing accommodating portion 30 accommodates a pair of bearings 38, and the motor shaft 12 is assembled to the pair of bearings 38. Both axial sides of the bearing accommodating portion 30 are open, and one end of the motor shaft 12 protrudes from the bearing accommodating portion 30 toward the center piece 18 through an opening on one axial side of the bearing accommodating portion 30.
  • the stator 16 includes a stator core 40 and a plurality of windings 46.
  • the stator core 40 is accommodated inside the outer cylindrical portion 32 and disposed between the bearing accommodation portion 30 and the rotor magnet 28 in the radial direction.
  • the center piece 18 is made of, for example, aluminum.
  • the center piece 18 has a flat body portion 62.
  • the main body 62 is disposed on the surface of the center piece 18 opposite to the stator core 40.
  • a recess 60 for inserting one end of the motor shaft 12 is formed on the surface of the main body 62 on the stator core 40 side.
  • the circuit board 20 is fixed to the surface of the main body 62 opposite to the stator core 40.
  • the circuit board 20 is formed with an electronic circuit for switching the energization of the plurality of windings 46 described above.
  • the connector member 22 is provided on one side of the main body 62.
  • a connector portion 70 is provided in the connector member 22, and a connector terminal provided in the connector portion 70 is electrically connected to an electronic circuit formed on the circuit board 20.
  • the substrate case 24 is formed in a flat box shape, and is assembled to the main body 62 from the side opposite to the stator core 40 with respect to the main body 62.
  • a housing space 72 is formed between the substrate case 24 and the main body 62, and the circuit board 20 is housed in the housing space 72.
  • the fan 50 is disposed so as to surround the center part 51 provided at the central part of the fan 50, the insert portion 52 disposed so as to extend around the center part 51, and the periphery of the insert portion 52.
  • a fan boss 53 and a plurality of blades 54 are provided.
  • the center part 51, the fan bosses 53, and the plurality of blades 54 are made of resin, and the insert portion 52 is made of metal such as aluminum.
  • the center part 51, the insert portion 52, the fan boss 53, and the plurality of blades 54 are integrated by integral molding.
  • the center part 51 has a disk shape. On a surface of the center part 51 on the motor shaft 12 side, a convex portion 511 having a conical shape, an assembly guide 512 having a cylindrical shape, and a plurality of guide ribs 5121 are formed.
  • the center part 51, the convex portion 511, the assembly guide 512 and the plurality of guide ribs 5121 are integrally formed by integral molding.
  • One end of the motor shaft 12 is fitted into and fixed to a recess 60 formed in the main body 62.
  • a recess 60 formed in the main body 62.
  • an end recess 121 that is recessed to the one end side of the motor shaft 12 is formed.
  • the cross section of the distal end recess 121 is V-shaped.
  • the center of the tip end recess 121 coincides with the axial center of the motor shaft 12.
  • the axial center of the convex portion 511 and the axial center of the assembly guide 512 are formed to coincide with the rotational center of the fan 50, respectively.
  • the assembly guide 512 has a cylindrical shape, and is formed so as to project from the rotation center of the fan 50 to the motor shaft 12 side.
  • a plurality of guide ribs 5121 are formed on the inner peripheral surface of the assembly guide 512 so as to project in the axial center direction of the assembly guide 512 from the inner peripheral surface of the assembly guide 512. Specifically, three guide ribs 5121 are formed on the inner circumferential surface of the assembly guide 512. Each guide rib 5121 protrudes from three directions on the inner peripheral surface of the assembly guide 512 toward the axial center of the assembly guide 512.
  • Each guide rib 5121 has a corner formed at its tip. Specifically, the cross-sectional shape of the guide rib 5121 orthogonal to the axial direction of the assembly guide 512 is fan-shaped. When the tip of each guide rib 5121 contacts the outer peripheral surface of the motor shaft 12, the motor shaft 12 is guided such that the axial center of the motor shaft 12 and the rotation center of the fan 50 coincide with each other.
  • the convex portion 511 corresponds to a guide portion
  • the assembly guide 512 and the plurality of guide ribs 5121 also correspond to a guide portion.
  • the insert portion 52 is formed with a plurality of holes 521 for inserting the plurality of screws 81.
  • the fan 50 is screwed to the rotor housing 26 by a plurality of screws 81.
  • the screws 81 are inserted into the holes 521 formed in the insert portion 52 of the fan 50 and fastened to the screw holes 261 formed in the rotor housing 26.
  • the fan boss 53 has a bottomed cylindrical shape. At the bottom of the fan boss 53, an insert 52 and a center part 51 are disposed. A plurality of blades 54 are radially formed on the outer peripheral surface of the fan boss 53.
  • the operator prepares the rotor housing 26 and the fan 50, and then inserts the other end of the motor shaft 12 inside the assembly guide 512 formed on the center part 51 of the fan 50. At this time, the motor shaft 12 is guided by the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 such that the axial center of the motor shaft 12 coincides with the axial center of the assembly guide 512.
  • the rotor housing 26 side of the fan 50 and the rotor housing 26 are arranged so that the positions of the holes 521 formed in the insert portion 52 of the fan 50 and the screw holes 261 formed in the rotor housing 26 coincide with each other. Attach the face of the fan 50 side.
  • the tip of the convex portion 511 formed on the center part 51 of the fan 50 is fitted in the tip recess 121 formed in the center of the tip on the other end side of the motor shaft 12 so that the shaft center of the motor shaft 12 is The motor shaft 12 is guided to coincide with the axial center of the assembly guide 512.
  • the screw 81 is rotated using a tool, and each fan formed in the rotor housing 26 Screws are fixed to the holes 261.
  • the fan 50 is screwed to the rotor housing 26 using the screws 81 for the remaining holes 521.
  • the fan 50 is assembled to the rotor housing 26 so that the axis of the motor shaft 12 and the rotation center of the fan 50 coincide with each other.
  • the tips of the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 are in contact with the motor shaft 12. Furthermore, the end of the convex portion 511 formed on the center part 51 of the fan 50 is also in contact with the end recess 121 formed in the center of the end on the other end side of the motor shaft 12.
  • the tips of the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 wear due to the friction with the motor shaft 12. Further, the tip of the convex portion 511 formed on the center part 51 of the fan 50 is also worn away by the friction with the motor shaft 12.
  • the tips of the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 and the tips of the convex portions 511 formed on the center part 51 of the fan 50 are worn easily. It has become.
  • corner portions are formed at the tips of the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512. Further, the tip of the convex portion 511 formed on the center part 51 of the fan 50 has a conical shape. Further, each of the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 and the convex portion 511 formed on the center part 51 of the fan 50 are made of resin.
  • corner portions are formed at the tips of the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512. Therefore, the contact area between the end of each guide rib 5121 and the motor shaft 12 can be reduced, and the friction between the end of each guide rib 5121 and the motor shaft 12 can be further reduced.
  • the tip of the convex portion 511 formed on the center part 51 of the fan 50 has a conical shape. Therefore, the contact area between the tip of the convex portion 511 and the motor shaft 12 can be reduced, and the friction between the tip of the convex portion 511 and the motor shaft 12 can be further reduced.
  • the fan drive device includes the motor shaft 12 whose one end is fixed to the center piece 18 and the rotor 14 having the rotor housing 26 that rotates about the axial center of the motor shaft 12. There is. Furthermore, a fan 50 fixed to the rotor housing 26 and rotating integrally with the rotor housing 26 is provided.
  • the fan 50 has guides 511, 512, 5121 for guiding the motor shaft 12 so that the axis of the motor shaft 12 and the rotation center of the fan 50 coincide with each other by fitting with the motor shaft 12. There is.
  • the guide portions 511, 512, 5121 guide the motor shaft 12 so that the axial center of the motor shaft 12 and the rotation center of the fan 50 coincide with each other by fitting with the motor shaft 12.
  • the positioning accuracy of the fan when fixing the fan 50 to the rotor housing 26 can be improved.
  • the guide portion has a convex portion 511 that protrudes toward the motor shaft 12 from the rotation center of the fan 50, and the distal end surface of the other end of the motor shaft 12 has a distal end recess 121 that is recessed to one end of the motor shaft 12. It is formed. Then, the convex portion 511 is fitted in the distal end concave portion 121, and the rotation center of the fan 50 and the axial center of the motor shaft 12 are aligned.
  • the center of rotation of the fan 50 is engaged by fitting the convex portion 511 which protrudes toward the motor shaft 12 from the center of rotation of the fan 50 in the end recessed portion 121 formed in the end surface on the other end side of the motor shaft 12 And the axis of the motor shaft 12 coincide with each other.
  • the guide portion is a cylindrical portion 512 which protrudes toward the motor shaft 12 from the rotation center of the fan 50, and the inside of the cylinder portion 512 such that the axis of the motor shaft 12 coincides with the rotation center of the fan 50.
  • a plurality of guide ribs 5121 protruding in the axial center direction of the cylindrical portion 512 from the circumferential surface. Then, the motor shaft 12 is fitted into the inside of the cylindrical portion 512, and the rotation center of the fan 50 and the axis of the motor shaft 12 coincide with each other.
  • the motor shaft 12 may be fitted inside the cylindrical portion 512 so that the rotation center of the fan 50 and the axis of the motor shaft 12 coincide with each other.
  • the convex portion 511 has a conical shape or a polygonal pyramid shape. Therefore, as the rotor 14 rotates, the convex portion 511 easily wears, and the friction between the convex portion 511 and the motor shaft 12 causes the motor to lock, and the rotational speed of the rotor 14 decreases. It can be avoided.
  • the plurality of guide ribs 5121 have corner portions formed at their tips. Therefore, it is possible to avoid the situation in which the tips of the plurality of guide ribs 5121 are easily worn and the motor is locked due to the friction between the plurality of guide ribs and the motor shaft and the situation in which the rotational speed of the rotor 14 is reduced. .
  • the convex portion 511 corresponding to the guide portion and the plurality of guide ribs 5121 are made of resin. Therefore, the situation where the convex portion 511 and the plurality of guide ribs 5121 are worn quickly and the motor is locked due to the friction with the motor shaft 12 and the situation where the rotational speed of the rotor 14 is reduced can be avoided. .
  • the fan 50 has a resin center part 51 in which a guide part is formed, and a metal insert part 52 disposed so as to spread around the center part 51. Then, the insert portion 52 is screwed to the rotor housing 26 using the screw 81, whereby the fan is assembled to the rotor housing.
  • the fan 50 is assembled to the rotor housing 26 by screw-fixing the metal insert portion 52 to the rotor housing 26 using the screw 81, the strength of the fan 50 can be secured.
  • the fan 50 also has a blade 54 made of resin. Therefore, for example, the weight can be reduced as compared to the case where the blade 54 is made of metal.
  • the center part 51 is formed with a convex portion 511, a cylindrical assembly guide 512, and a plurality of guide ribs 5121.
  • the convex portion 511 is not formed on the center part 51.
  • the end recess 121 is not formed at the end on the other end side of the motor shaft 12.
  • a guide portion is configured by a cylindrical assembly guide 512 formed on the center part 51 and a plurality of guide ribs 5121.
  • the rotor housing 26 and the fan 50 are prepared, and then, the inside of the assembly guide 512 formed on the center part 51 of the fan 50 is prepared. And the other end of the motor shaft 12 is inserted. At this time, the motor shaft 12 is guided by the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 such that the axial center of the motor shaft 12 coincides with the axial center of the assembly guide 512.
  • the rotor housing 26 side of the fan 50 and the rotor housing 26 are arranged so that the positions of the holes 521 formed in the insert portion 52 of the fan 50 and the screw holes 261 formed in the rotor housing 26 coincide with each other. Attach the face of the fan 50 side.
  • each screw 81 is rotated using a tool, and the fan 50 is screwed into each screw hole 261 formed in the rotor housing 26.
  • the fan 50 is assembled to the rotor housing 26 so that the axis of the motor shaft 12 and the rotation center of the fan 50 coincide with each other.
  • the cylindrical cylindrical portion 512 protruding toward the motor shaft 12 from the rotation center of the fan 50, and the axis of the motor shaft 12 and the rotation center of the fan 50 coincide with each other.
  • a plurality of guide ribs 5121 which project from the inner peripheral surface of the cylindrical portion 512 in the axial center direction of the cylindrical portion 512. Then, the motor shaft 12 is fitted into the inside of the cylindrical portion 512, and the rotation center of the fan 50 and the axis of the motor shaft 12 coincide with each other.
  • the motor shaft 12 can be fitted inside the cylindrical portion 512 so that the rotation center of the fan 50 and the axis of the motor shaft 12 coincide with each other.
  • FIG. 7 A fan drive apparatus according to a third embodiment will be described using FIGS. 7 to 8.
  • FIG. The fan drive apparatus of this embodiment further includes a spring member 80 for urging the rotor housing 26 to the other end side of the motor shaft 12 in addition to the fan drive apparatus of the first embodiment, and a motor shaft The difference is that the length of 12 is shorter.
  • the spring member 80 is constituted by a spring coil. One end of the spring member 80 is fixed to the center piece 18, and the other end of the spring member 80 is disposed to abut on one of the bearings 38. The spring member 80 is in contact with one of the bearings 38 to bias the rotor housing 26 toward the other end of the motor shaft 12.
  • the center part 51 of the fan 50 is formed with a convex portion 511 that protrudes toward the motor shaft 12 from the rotation center of the fan 50. Further, on the tip end surface of the motor shaft 12 on the other end side, there is formed a tip recess 121 which is recessed on one end side of the motor shaft 12.
  • the rotor housing 26 and the fan 50 are prepared, and then the rotor housing 26 is the motor shaft against the biasing force of the spring member 80. Press to one end of 12.
  • the motor shaft 12 is guided by the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 such that the axial center of the motor shaft 12 coincides with the axial center of the assembly guide 512.
  • the shaft center of the motor shaft 12 can be obtained by fitting the end of the convex portion 511 formed on the center part 51 of the fan 50 into the end recess 121 formed in the center of the end on the other end side of the motor shaft 12.
  • the motor shaft 12 is guided to coincide with the axial center of the assembly guide 512.
  • the tips of the guide ribs 5121 formed on the inner circumferential surface of the assembly guide 512 do not contact the motor shaft 12 after the fan 50 is assembled to the rotor housing 26. Furthermore, the tip of the convex portion 511 formed on the center part 51 of the fan 50 does not contact the tip recess 121 formed at the center of the tip on the other end side of the motor shaft 12.
  • the fan drive device of the present embodiment includes the spring member 80 that biases the rotor housing 26 to the other end side of the motor shaft 12, and the guide portion is the motor shaft 12 from the rotation center of the fan 50.
  • a distal end concave portion 121 having a convex portion 511 projecting to the side and having a concave end on one end side of the motor shaft 12 is formed on the distal end surface on the other end side of the motor shaft 12. Then, when the rotor housing 26 is pressed to one end side of the motor shaft 12, the convex portion 511 is fitted in the distal end concave portion 121, and the rotation center of the fan 50 and the axial center of the motor shaft 12 coincide with each other. .
  • the convex portion 511 is fitted in the distal end concave portion 121 so that the rotation center of the fan 50 and the axis of the motor shaft 12 coincide.
  • the tip concave portion 121 and the convex portion 511 no longer contact and the guide ribs 5121 formed on the inner peripheral surface of the assembly guide 512 no longer contact the motor shaft 12 Therefore, the situation where the motor is locked due to the friction between the tip concave part 121 and the convex part 511 and the situation where the rotational speed of the rotor 14 is reduced can be avoided.
  • the convex portion 511 formed on the center part 51 has a conical shape.
  • the tip of the convex portion 511 formed on the center part 51 is rounded.
  • the tip of the convex portion 511 formed on the center part 51 can be configured to be rounded.
  • the fan drive device of the first embodiment has a convex portion 511 that protrudes toward the motor shaft 12 from the rotation center of the fan 50, and further, one end of the motor shaft 12 on the tip end face of the other end of the motor shaft 12.
  • a tip concave portion 121 recessed to the side is formed.
  • the fan drive device of the present embodiment has a recessed portion 513 recessed from the rotation center of the fan 50 to the opposite side to the motor shaft 12 side, and further, the motor shaft 12 at the other end of the motor shaft 12.
  • the tip convex part 122 which protrudes on the other end side of is formed.
  • the tip convex portion 122 is fitted in the concave portion 513, and the rotation center of the fan 50 and the axial center of the motor shaft 12 are in agreement.
  • the rotor housing 26 and the fan 50 are prepared, and then the motor shaft 12 is formed in the recess 513 formed in the rotation center of the fan 50.
  • the formed tip convex portion 122 is fitted.
  • the rotation center of the fan 50 and the axis of the motor shaft 12 coincide with each other.
  • each screw 81 is rotated using a tool, and the fan 50 is screwed into each screw hole 261 formed in the rotor housing 26.
  • the fan 50 is assembled to the rotor housing 26 so that the axis of the motor shaft 12 and the rotation center of the fan 50 coincide with each other.
  • the guide portion has the concave portion 513 recessed from the rotation center of the fan 50 to the opposite side to the motor shaft 12 side, and the other end of the motor shaft 12 has the other end of the motor shaft 12
  • the tip convex part 122 which protrudes to the end side is formed. Then, the tip convex portion 122 is fitted in the concave portion 513 so that the rotation center of the fan 50 and the axial center of the motor shaft 12 coincide with each other.
  • the tip convex portion 122 is fitted in the concave portion 513 so that the rotation center of the fan 50 and the axial center of the motor shaft 12 can be aligned.
  • the cross-sectional shape orthogonal to the axial direction of the assembly guide 512 in the plurality of guide ribs 5121 formed on the center part 51 is fan-shaped.
  • the cross-sectional shape of the guide rib 5121 orthogonal to the axial direction of the assembly guide 512 is semicircular. That is, the tips of the plurality of guide ribs 5121 formed on the center part 51 are rounded. Thus, the tips of the plurality of guide ribs 5121 can be configured to be rounded.
  • the cross-sectional shape orthogonal to the axial direction of the assembly guide 512 in the guide rib 5121 is U-shaped. That is, the tips of the plurality of guide ribs 5121 formed on the center part 51 are rounded. Thus, the tips of the plurality of guide ribs 5121 can be configured to be rounded.
  • the fan drive device according to the eighth embodiment will be described with reference to FIG.
  • the fan drive device according to the third embodiment has a convex portion 511 projecting toward the motor shaft 12 from the rotation center of the fan 50, and further, one end of the motor shaft 12 on the tip end face of the other end of the motor shaft 12.
  • a tip concave portion 121 recessed to the side is formed.
  • the fan drive device of the present embodiment has a recessed portion 513 recessed from the rotation center of the fan 50 to the opposite side to the motor shaft 12 side, and further, the motor shaft 12 at the other end of the motor shaft 12.
  • the tip convex part 122 which protrudes on the other end side of is formed.
  • the spring member 80 biases the rotor housing 26 to the other end side of the motor shaft 12. Further, the center part 51 is formed with a recess 513 which is recessed from the rotation center of the fan 50 to the side opposite to the motor shaft 12 side. At the tip of the other end of the motor shaft 12, a tip convex portion 122 that protrudes to the other end of the motor shaft 12 is formed.
  • the rotor housing 26 and the fan 50 are prepared, and then the rotor housing 26 is the motor shaft against the biasing force of the spring member 80. Press to one end of 12. At this time, the motor shaft 12 is guided such that the axial center of the motor shaft 12 coincides with the axial center of the assembly guide 512 by the recess 513 formed in the center part 51.
  • the positions of the holes 521 formed in the insert portion 52 of the fan 50 and the screw holes 261 formed in the rotor housing 26 are matched, and the screws 81 are rotated using a tool, and the fan 50 is rotated. Screws are fixed to respective screw holes 261 formed in the rotor housing 26.
  • the fan 50 is assembled to the rotor housing 26 so that the axis of the motor shaft 12 and the rotation center of the fan 50 coincide with each other.
  • the fan drive device of the present embodiment includes the spring member 80 that biases the rotor housing 26 to the other end side of the motor shaft 12, and the guide portion is the motor shaft 12 from the rotation center of the fan 50. It has a recess 513 recessed on the side opposite to the side. At the other end of the motor shaft 12 is formed a tip convex portion 122 which protrudes to the other end of the motor shaft 12. Then, when the rotor housing 26 is pressed to one end side of the motor shaft 12, the tip convex portion 122 is fitted in the concave portion 513, and the rotation center of the fan 50 and the axis of the motor shaft coincide.
  • the recess 513 does not contact the tip protrusion 122, so that the motor may be locked due to the contact between the recess 513 and the tip protrusion 122. It is possible to avoid a situation in which the number of revolutions decreases.
  • the fan 50 is screwed to the rotor housing 26 using the screw 81.
  • the present invention is not limited to the screw fixing.
  • the fan can be fixed to the rotor housing by welding. .
  • the convex portion 511 formed in the center part 51 is deleted, and the assembly guide 512 formed in the center part 51;
  • the guide portion is constituted by the plurality of guide ribs 5121.
  • the assembly guide 512 formed on the center part 51 and the plurality of guide ribs 5121 are deleted, and the convex portion 511 formed on the center part 51 guides You may constitute a part.
  • the guide is formed by the assembly guide 512 formed on the center part 51 and the plurality of guide ribs 5121, and the protrusion 511 formed on the center part 51.
  • the guidance unit was configured.
  • the convex portion 511 formed on the center part 51 may be deleted, and the guide may be configured by the assembly guide 512 formed on the center part 51 and the plurality of guide ribs 5121. Further, the guide may be configured by the convex portion 511 formed on the center part 51 by deleting the assembly guide 512 formed on the center part 51 and the plurality of guide ribs 5121.
  • this indication is not limited to above-mentioned embodiment, and can be changed suitably. Moreover, said each embodiment is not mutually irrelevant and can be combined suitably, unless the combination is clearly impossible. Further, in each of the above-described embodiments, it is needless to say that the elements constituting the embodiment are not necessarily essential except when clearly indicated as being essential and when it is considered to be obviously essential in principle. Yes. Further, in the above embodiments, when numerical values such as the number, numerical value, amount, range, etc. of constituent elements of the embodiment are mentioned, it is clearly indicated that they are particularly essential and clearly limited to a specific number in principle. It is not limited to the specific number except when it is done. Further, in the above embodiments, when referring to materials, shapes, positional relationships, etc. of constituent elements etc., unless specifically stated otherwise or in principle when limited to a specific material, shape, positional relationship, etc., etc. It is not limited to the material, the shape, the positional relationship, etc.
  • the fan drive device includes a motor shaft fixed at one end to a center piece, and a rotor housing that rotates about an axis of the motor shaft. And a rotor having Furthermore, a fan fixed to the rotor housing and rotating integrally with the rotor housing is provided. And a fan has a guide part for guiding a motor shaft so that an axial center of a motor shaft and a rotation center of a fan may correspond by fitting with a motor shaft.
  • the guide portion has a convex portion projecting from the rotation center of the fan toward the motor shaft, and the tip end surface of the other end of the motor shaft is recessed toward the one end of the motor shaft There is formed an end concave portion. And a convex part is fitted to a tip crevice, and it is in the state where the rotation center of a fan and the axial center of a motor shaft corresponded.
  • the protrusion can be fitted in the tip end recess so that the rotation center of the fan and the axis of the motor shaft coincide with each other.
  • the guide portion has a concave portion recessed from the rotation center of the fan to the opposite side to the motor shaft side, and the other end side of the motor shaft is provided at the other end of the motor shaft
  • the tip convex part which protrudes to is formed.
  • a tip convex part is fitted in a crevice, and it is in the state where the rotation center of a fan and the axial center of a motor shaft corresponded.
  • the tip convex portion is fitted in the concave portion so that the rotation center of the fan and the axial center of the motor shaft can be aligned.
  • the guide portion is a cylindrical portion so that the cylindrical portion protruding from the rotation center of the fan to the motor shaft side, and the shaft center of the motor shaft coincides with the rotation center of the fan. And a plurality of guide ribs projecting in the axial direction of the cylindrical portion from the inner circumferential surface of the housing. Then, the motor shaft is fitted into the inside of the cylindrical portion, and the rotation center of the fan and the axis of the motor shaft coincide with each other.
  • the motor shaft can be fitted inside the cylindrical portion so that the center of rotation of the fan and the axis of the motor shaft coincide with each other.
  • a spring member for urging the rotor housing to the other end side of the motor shaft is provided, and the guide portion has a convex portion projecting to the motor shaft side from the rotation center of the fan. . Further, on the tip end surface on the other end side of the motor shaft, there is formed a tip recess recessed on one end side of the motor shaft. Then, when the rotor housing is pressed to one end side of the motor shaft, the convex portion is fitted to the end concave portion, and the rotation center of the fan and the shaft center of the motor shaft are in agreement.
  • the projection is fitted in the tip end recess so that the rotation center of the fan and the shaft center of the motor shaft coincide with each other.
  • the motor is locked due to the friction between the tip concave portion and the convex portion, and the rotational speed of the rotor 14 It is also possible to avoid a situation where it will decline.
  • a spring member which biases the rotor housing to the other end side of the motor shaft.
  • the guide portion has a concave portion recessed from the rotation center of the fan to the opposite side to the motor shaft side, and a tip convex portion protruding to the other end side of the motor shaft is formed at the other end of the motor shaft It is done. Then, when the rotor housing is pressed to one end side of the motor shaft, the tip convex portion is fitted in the concave portion, and the rotation center of the fan and the shaft center of the motor shaft coincide with each other.
  • the tip convex portion is fitted in the recess so that the rotation center of the fan and the shaft center of the motor shaft coincide with each other.
  • the motor may be locked due to the friction between the recess and the tip protrusion, and the rotational speed of the rotor 14 It is also possible to avoid a situation where it will decline.
  • a spring member which biases the rotor housing to the other end side of the motor shaft.
  • the guide portion is a cylindrical portion projecting from the rotation center of the fan toward the motor shaft, and the inner peripheral surface of the cylinder portion so that the shaft center of the motor shaft and the rotation center of the fan coincide. And a plurality of guide ribs projecting in the axial direction of the Then, when the rotor housing is pressed to one end side of the motor shaft, the motor shaft is fitted inside the cylindrical portion, and the rotation center of the fan and the shaft center of the motor shaft coincide with each other.
  • the motor shaft is fitted inside the cylindrical portion so that the rotation center of the fan and the shaft center of the motor shaft coincide with each other. can do.
  • the motor is locked due to the friction between the plurality of guide ribs and the motor shaft, and the number of rotations of the rotor Can be avoided.
  • the convex portion has a conical shape or a polygonal pyramid shape. Therefore, with the rotation of the rotor, the tip of the protrusion is easily worn away by the friction with the tip recess, and the protrusion can be prevented from coming into contact with the tip recess promptly.
  • the plurality of guide ribs are formed with corner portions at their tips. Therefore, with the rotation of the rotor, the tips of the plurality of guide ribs easily wear due to the friction with the motor shaft, and the plurality of guide ribs can be prevented from contacting the motor shaft promptly.
  • the tip convex portion has a conical shape or a polygonal pyramid shape. Therefore, with the rotation of the rotor, the recess is apt to wear due to the friction with the tip protrusion, and the tip protrusion can be prevented from contacting the recess promptly.
  • the guide portion is made of resin. Therefore, with the rotation of the rotor, the guide portion is easily worn due to the friction with the motor shaft, and the guide portion can be prevented from contacting the motor shaft promptly.
  • the fan has a resin center part in which the guide part is formed, and a metal insert part arranged so as to spread around the center part.
  • the fan is assembled to the rotor housing by screw-fixing the insert portion to the rotor housing using a screw.
  • the fan is assembled to the rotor housing 26 by screw-fixing the metal insert portion to the rotor housing using a screw, the strength of the fan can be secured.
  • the fan has a blade made of resin. Therefore, for example, the weight can be reduced as compared to the case where the blade is made of metal.
  • the convex portion 511, the assembly guide 512, the guide rib 5121 and the concave portion 513 in the above embodiment correspond to the guide portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne un dispositif d'entraînement de ventilateur pourvu : d'un arbre de moteur (12) ayant une extrémité fixée à une pièce centrale (18) ; d'un rotor (14) ayant un boîtier de rotor (26) tournant autour de l'axe de l'arbre de moteur ; et d'un ventilateur (50) fixé au boîtier de rotor et tournant avec le boîtier de rotor. Le ventilateur a une section de guidage (511, 512, 5121, 513) qui, lorsqu'elle est montée sur l'arbre de moteur, guide l'arbre de moteur de telle sorte que l'axe de l'arbre de moteur et le centre de rotation du ventilateur coïncident.
PCT/JP2018/043169 2017-12-25 2018-11-22 Dispositif d'entraînement de ventilateur WO2019130927A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-248105 2017-12-25
JP2017248105A JP2019115208A (ja) 2017-12-25 2017-12-25 ファン駆動装置

Publications (1)

Publication Number Publication Date
WO2019130927A1 true WO2019130927A1 (fr) 2019-07-04

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Application Number Title Priority Date Filing Date
PCT/JP2018/043169 WO2019130927A1 (fr) 2017-12-25 2018-11-22 Dispositif d'entraînement de ventilateur

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JP (1) JP2019115208A (fr)
WO (1) WO2019130927A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073089A (ja) * 1983-09-29 1985-04-25 Nippon Radiator Co Ltd 電動フアン
JPS60110598A (ja) * 1983-11-22 1985-06-17 Kawasaki Heavy Ind Ltd インペラの心出し方法
JP2000232744A (ja) * 1999-02-12 2000-08-22 Densei Lambda Kk Ｓｒモータのロータ形状及びシャフト圧入構造
JP2001027244A (ja) * 1999-07-12 2001-01-30 Nsk Ltd 冷却ファンモータ用動圧軸受装置
JP2001304199A (ja) * 2000-04-19 2001-10-31 Minebea Co Ltd 送風機
JP2003180063A (ja) * 2001-12-07 2003-06-27 Asmo Co Ltd ブラシレスモータ
JP2008131802A (ja) * 2006-11-22 2008-06-05 Asmo Co Ltd ファンモータ
JP2016167943A (ja) * 2015-03-10 2016-09-15 アスモ株式会社 ブラシレスモータ
JP2017129023A (ja) * 2016-01-18 2017-07-27 ダイキン工業株式会社 遠心ファン

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073089A (ja) * 1983-09-29 1985-04-25 Nippon Radiator Co Ltd 電動フアン
JPS60110598A (ja) * 1983-11-22 1985-06-17 Kawasaki Heavy Ind Ltd インペラの心出し方法
JP2000232744A (ja) * 1999-02-12 2000-08-22 Densei Lambda Kk Ｓｒモータのロータ形状及びシャフト圧入構造
JP2001027244A (ja) * 1999-07-12 2001-01-30 Nsk Ltd 冷却ファンモータ用動圧軸受装置
JP2001304199A (ja) * 2000-04-19 2001-10-31 Minebea Co Ltd 送風機
JP2003180063A (ja) * 2001-12-07 2003-06-27 Asmo Co Ltd ブラシレスモータ
JP2008131802A (ja) * 2006-11-22 2008-06-05 Asmo Co Ltd ファンモータ
JP2016167943A (ja) * 2015-03-10 2016-09-15 アスモ株式会社 ブラシレスモータ
JP2017129023A (ja) * 2016-01-18 2017-07-27 ダイキン工業株式会社 遠心ファン

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