WO2021153661A1 - Motor and blower device - Google Patents

Motor and blower device Download PDF

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Publication number
WO2021153661A1
WO2021153661A1 PCT/JP2021/002998 JP2021002998W WO2021153661A1 WO 2021153661 A1 WO2021153661 A1 WO 2021153661A1 JP 2021002998 W JP2021002998 W JP 2021002998W WO 2021153661 A1 WO2021153661 A1 WO 2021153661A1
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WO
WIPO (PCT)
Prior art keywords
shaft
sleeve
top plate
fixed
plate portion
Prior art date
Application number
PCT/JP2021/002998
Other languages
French (fr)
Japanese (ja)
Inventor
祐司 大村
Original Assignee
ミネベアミツミ株式会社
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 ミネベアミツミ株式会社 filed Critical ミネベアミツミ株式会社
Priority to JP2021574100A priority Critical patent/JPWO2021153661A1/ja
Publication of WO2021153661A1 publication Critical patent/WO2021153661A1/en

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • 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 invention relates to a motor and a blower.
  • the shaft, the bearing fixed to the shaft, the tubular sleeve accommodating the bearing, the stator fixed to the outer peripheral portion of the sleeve, and the rotor surrounding the stator are fixed to one end of the shaft.
  • a so-called outer rotor type motor including a rotor hub and a case for accommodating these, and a blower device in which an impeller is fixed to the rotor hub are known (see, for example, Patent Document 1).
  • the sleeve and the case are fixed with an adhesive or the like at the time of assembly, but in the case of fixing with an adhesive, the verticality of the shaft (rotating shaft) is secured. Therefore, it is required to prevent a gap between the two fixing points, and there is a concern that high mounting accuracy is required and the mounting work is complicated.
  • the present invention has been made in view of the above background, and an example of a problem is to provide a motor and a blower capable of easily increasing the verticality of a shaft (rotating shaft) while having a simple configuration. And.
  • the shaft and A top plate portion fixed to one end of the shaft and extending in a direction perpendicular to the axial direction of the shaft,
  • the bearing fixed to the shaft and A tubular sleeve that houses the bearing and A stator fixed to the outer peripheral portion of the sleeve and
  • the rotor surrounding the stator and With The top plate portion and the rotor are fixed to each other.
  • the top plate portion is provided with a hole portion that opens toward the end portion of the sleeve on the top plate portion side in the axial direction of the shaft.
  • the top plate portion and the rotor are integrated to form a hub.
  • the sleeve has a flange portion extending in a direction perpendicular to the axial direction of the shaft at an end portion on the top plate portion side.
  • the hole may be open toward the flange in the axial direction of the shaft.
  • the sleeve may have a convex portion on the top plate side of the stator that projects in a direction perpendicular to the axial direction of the shaft and engages with the stator. ..
  • the bearing includes at least a first bearing of the shaft located closer to one end to which the top plate is fixed and a second bearing located closer to the other end of the shaft opposite to the one end side.
  • the sleeve, the first bearing, and the second bearing constitute one cartridge member.
  • the motor of the present invention includes a case for accommodating all or a part of other constituent members inside.
  • the inner surface of the case has a first tubular portion that stands upright in the internal direction.
  • the sleeve can be fixed to the case by fitting and fixing the end portion of the sleeve opposite to the top plate portion to the first tubular portion.
  • a second tubular portion erected on the sleeve side is provided at the center of the top plate portion.
  • a second tubular portion erected on the sleeve side is provided at the center of the top plate portion.
  • the top plate portion is fixed to the shaft by fitting and fixing one end of the shaft to the second tubular portion.
  • Either or both of the first tubular portion, the end of the sleeve opposite to the top plate portion, and the second tubular portion and one end of the shaft are press-fitted or It can be fixed by a fixing method including press fitting.
  • a shaft and A top plate portion fixed to one end of the shaft and extending in a direction perpendicular to the axial direction of the shaft,
  • the bearing fixed to the shaft and A tubular sleeve that houses the bearing and A stator fixed to the outer circumference of the sleeve,
  • the rotor surrounding the stator and A case that houses all or part of other components inside, With
  • the top plate portion and the rotor are fixed to each other.
  • the inner surface of the case has a first tubular portion that stands upright in the internal direction.
  • At the center of the top plate portion there is a second tubular portion that stands on the sleeve side.
  • a fixing method in which the first tubular portion, the end portion of the sleeve opposite to the top plate portion, and the second tubular portion and one end of the shaft are all press-fitted or press-fitted. Is fixed by.
  • the motor and It has an impeller fixed to the top plate portion.
  • FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. It is an exploded sectional view of the blower shown in FIG. It is sectional drawing for demonstrating the operation which fixes a shaft to a hub.
  • FIG. 5 is a cross-sectional view for explaining an operation of fixing the state shown in FIG. 4 to a case.
  • FIG. 1 is a perspective view of a blower device 101 to which the motor 100 according to the embodiment is applied
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG.
  • the terms “upper” and “lower” mean the vertical relationship in FIG. 2, and do not necessarily match the vertical relationship in the direction of gravity. Further, in the description of the present embodiment, the terms left to right mean the left-right relationship in FIG. These are the same in all the drawings except FIG.
  • the motor 100 of the blower 101 includes a shaft 1, a hub 2 fixed to one end of the shaft 1, a bearing 4 fixed to the shaft 1, a tubular sleeve 5 accommodating the bearing 4, and an outer circumference of the sleeve 5. It is configured to have a stator 6 fixed to a portion and a case 7 for accommodating these constituent members inside.
  • the shaft 1 is located at the center of the motor 100 as viewed from above, and extends in the vertical direction.
  • the shaft 1 is made of, for example, aluminum for weight reduction.
  • a hub 2 is fixed to one end (upper end in FIG. 2) of the shaft 1.
  • the shaft 1 and the hub 2 are fixed by a shaft mounting member 23 that forms a part of the hub 2.
  • the term "circumferential direction" means the circumferential direction of a circle centered on the rotation axis X of the shaft 1.
  • the hub 2 is attached to a cup-shaped resin cup portion 21 as a whole, a cup-shaped yoke 31 fitted in the cup of the cup portion 21, and an inner peripheral surface of the yoke 31 so as to surround the stator 6. It is configured to have a magnet 32 and an impeller 22 fixed to the outer peripheral surface of the cup portion 21.
  • the rotor 3 is composed of the yoke 31 and the magnet 32.
  • the hub 2 is fixed to one end of the shaft 1 from its shape surface and extends in a direction perpendicular to the axial direction of the shaft 1 (rotation axis X direction), and is coaxial with the rotation axis direction X. It is divided into a cylindrical portion 2B, which is a cylindrical body of the above, and a truncated cone-shaped truncated cone portion 2C connecting the outer circumference of the top plate portion 2A and the upper end of the cylindrical portion 2B.
  • the top plate portion 2A, the cylindrical portion 2B, and the truncated cone portion 2C all basically have a laminated structure of two or more layers including the cup portion 21 and the yoke 31.
  • the top plate portion 2A of the cup portion 21 is provided with a recess 21a recessed from the inner side to the upper side.
  • a part of the mounting member of the shaft 1 (hereinafter, referred to as “shaft mounting member”) described later is housed in the recess 21a.
  • the top plate portion 2A has a plurality of circular tubular holes 20a that open toward the end portion (flange portion 51 described later) of the sleeve 5 on the top plate portion 2A side in the rotation axis X direction (in this embodiment, the top plate portion 2A has a plurality of circular tubular holes 20a. 3 pieces.) It is provided.
  • the hole 20a is provided parallel to the rotation axis X, and communicates the space outside the blower 101 with the space inside the hub 2.
  • the top plate portion 2A has a welded portion 20b in which a part of the inner peripheral surface of the hub 2 is inserted into the hole portion 30a formed in the yoke 31 and welded to the inner wall portion 31d of the yoke 31.
  • the top plate portion 2A and the rotor 3 including the yoke 31 are fixed and integrated by the welded portion 20b to form the hub 2.
  • the truncated cone portion 2C is provided with a plurality of hole portions 20c for communicating the space outside the blower 101 and the space inside the hub 2.
  • the hole 20c is adapted to generate an air flow inside the hub 2 by the rotation of the impeller 22.
  • the yoke 31 has a circular opening 31a formed in the center of the top plate portion 2A, and a shaft mounting member 23, which will be described later, is fitted and fixed to the circular opening 31a.
  • the yoke 31 is formed of a magnetic material, but may be formed of a non-magnetic material such as aluminum if there is no problem in characteristics.
  • the magnet 32 is attached to the inner peripheral surface of the yoke 31 in the cylindrical portion 2B so as to face the stator 6.
  • the magnet 32 has an annular shape, and a region magnetized on the north pole and a region magnetized on the south pole are alternately provided along the circumferential direction at regular intervals.
  • the shaft mounting member 23 includes a tubular second tubular portion (hereinafter, the second tubular portion is referred to as a “mounting member tubular portion”) 23a and an annular annular portion 23b, 23c. ..
  • One end (upper end) of the shaft 1 is fixed to the inside of the mounting member tubular portion 23a by press fitting.
  • the annular portion 23b and the annular portion 23c are provided at positions separated from each other in the rotation axis X direction on the outer peripheral surface of the mounting member tubular portion 23a, and project in a direction away from the rotation axis X.
  • the edge of the circular opening 31a of the yoke 31 is sandwiched between the annular portion 23b and the annular portion 23c. That is, the annular portion 23b and the annular portion 23c are separated by substantially the same length as the thickness of the yoke 31.
  • the top plate portion 2A side of the mounting member tubular portion 23a and the annular portion 23b are housed in the recess 21a of the top plate portion 2A.
  • the annular portion 23b and the lower (bearing 4) side of the mounting member tubular portion 23a are housed inside the yoke 31.
  • the shaft 1 is fixed in a state of being fitted into the bearing 4.
  • the first bearing 41 is located on the shaft 1 closer to the upper side (one end side) to which the top plate portion 2A is fixed. Further, the second bearing 42 is located closer to the lower side (the other end side opposite to one end side).
  • the bearings 41 and 42 are so-called ball bearings composed of outer rings 41a and 42a, inner rings 41b and 42b, and balls (bearing balls) 41c and 42c interposed between the outer rings 41a and 42a and the inner rings 41b and 42b.
  • the bearing 41 is made of, for example, a hard metal such as iron or a ceramic member.
  • the shaft 1 is fixed to the inner rings 41b and 42b, and is rotatable with respect to the outer rings 41a and 42a.
  • the bearings 41 and 42 are housed in the sleeve 5.
  • the sleeve 5 is a member having a tubular shape (particularly a cylindrical shape), and is made of, for example, plastic or metal.
  • the sleeve 5 has a flange portion 51 provided at the end portion on the top plate portion 2A side, and a convex portion 52 provided on the outer peripheral surface 5c.
  • the flange portion 51 extends in a direction perpendicular to the rotation axis X direction from the end portion of the sleeve 5 on the top plate portion 2A side.
  • the hole portion 20a is located on the upper side (top plate portion 2A) of the flange portion 51. That is, the flange portion 51 extends from the upper end of the sleeve 5 so that the flange portion 51 is located on the extending shaft of the pipe forming the hole portion 20a.
  • the convex portion 52 projects from the outer peripheral surface 5c of the sleeve 5 in a direction perpendicular to the rotation axis X direction, and is in contact with the top plate portion 2A side (upper side) of the stator core 61 of the stator 6, which will be described later.
  • the central portion of the rotation axis L protrudes toward the rotation axis L (small diameter inner peripheral portion) 53, and both sides of the rotation axis L are recessed in a direction away from the rotation axis L.
  • the protruding portion 53 is referred to as a small inner diameter portion 53
  • the concave portion 54 is referred to as a large inner diameter portion 54.
  • the sleeve 5 may be integrally molded by a known method so as to have a shape having a small inner diameter portion 53 and a large inner diameter portion 54.
  • the sleeve 5 has an inner diameter and an outer diameter of the large inner diameter portion 54.
  • an inner diameter having the same diameter as the inner diameter of the small inner diameter portion 53 and an outer diameter having the same diameter as the inner diameter of the large inner diameter portion 54 are provided inside the large-diameter circular tube (hereinafter referred to as "large-diameter circular tube"), an inner diameter having the same diameter as the inner diameter of the small inner diameter portion 53 and an outer diameter having the same diameter as the inner diameter of the large inner diameter portion 54 are provided.
  • Two sleeves 5 are inserted by inserting a small-diameter circular tube (hereinafter referred to as "small-diameter circular tube") so that the small-diameter circular tube is located substantially in the center of the large-diameter circular tube in the L direction of the rotation axis. It may be formed of the above-mentioned plurality of members. At this time, the small-diameter circular tube may be formed of a member different from that of the large-diameter circular tube, and for example, an elastic member such as a spiral spring can be used.
  • the outer rings 41a and 42a of the two bearings 41 and 42 are fitted and fixed to the two large inner diameter portions 54 of the sleeve 5, respectively, and are supported by the sleeve 5.
  • the shaft 1 is fitted and fixed to the inner rings 41b and 42b of the two bearings 41 and 42, and is supported by the two bearings 41 and 42. Therefore, the shaft 1 is supported so as to be rotatable with respect to the sleeve 5.
  • the sleeve 5, the first bearing 41, and the second bearing 42 constitute one cartridge member.
  • the cartridge member in which the first bearing 41 and the second bearing 42 are assembled to the sleeve 5 in advance as one component, the assembling work becomes easy at the time of manufacturing. Further, for example, when the bearing 4 is damaged, the entire cartridge member may be replaced, so that the replacement work is easy, the repair can be performed easily, and the cost can be reduced.
  • the cartridge member can be composed of at least three parts, a sleeve 5, a first bearing 41, and a second bearing 42. Further, in a state where the shaft 1 is fitted and inserted into the bearing 4 and fixed, 1 One cartridge member may be configured. By using the cartridge member in which the shaft 1 is incorporated in the above three parts, it is possible to more accurately adjust the rotation balance in the state of the cartridge member, and the manufacturing or repair work is also easier. can do.
  • the sleeve 5 is fixed to the case 7 by fitting and fixing the end portion on the opposite side (lower side) of the top plate portion 2A to the tubular portion of the case 7, which will be described in detail later. There is.
  • the shaft 1 supported by the sleeve 5 is supported so as to be rotatable with respect to the case 7, so that the rotational force of the motor 100 can be taken out.
  • the stator 6 surrounding the sleeve 5 has a stator core 61, a coil 62, and an insulator 63.
  • the stator 6 is fixed to the sleeve 5 by engaging the inner peripheral side with the convex portion 52 of the sleeve 5.
  • the stator core 61 is a laminate of an annular silicon steel plate or the like arranged coaxially with the shaft 1.
  • the coil 62 is wound around the stator core 61.
  • the stator core 61 and the coil 62 are insulated by an insulator 63 formed of an insulator.
  • the surface of the stator core 61 may be coated with an insulating film to insulate the coil 62.
  • the substrate 8 is fixed to the end 63b on the opposite side (lower side) of the insulator 63 from the top plate 2A.
  • the case 7 has a side wall portion 71 that surrounds the hub 2 and a bottom wall portion 72 that is located in a part of one (lower) opening of the side wall portion 71.
  • the case 7 is formed of, for example, a resin material or a metal material. In the internal space of the case 7, not only the rotor 3 and the stator 6, but also most of the components (all fixed) of the motor 100 such as the hub 2 and the blower 101 are housed.
  • the case 7 has a tubular first tubular portion (hereinafter, the first tubular portion is referred to as a “case tubular portion”) 73 that is erected inward from the inner surface thereof.
  • the case tubular portion 73 is erected from the bottom wall portion 72 to the top plate portion 2A side, and is formed by insert-molding a metal cylindrical sleeve member into the case 7 to form a bottom wall portion 72. It is formed integrally.
  • An air outlet 74 having a circular opening is provided above the case 7.
  • the case tubular portion 73 By making the case tubular portion 73 made of metal, when the sleeve 5 is press-fitted, the strength of the case 7 can be improved and the press-fitting can be performed more stably, but the press-fitting is not limited to the metal case.
  • Another member molded from resin, ceramics, or the like may be integrally formed, or may be integrally molded with the case 7. In that case, weight reduction and man-hours can be reduced.
  • Inside the case tubular portion 73 an end portion of the sleeve 5 on the opposite side (lower side) of the top plate portion 2A is fixed by press fitting.
  • the sleeve 5 is fixed to the case 7 by fixing the end of the sleeve 5 to the case tubular portion 73.
  • a recess (notched) recessed from the outer circumference so that the outer diameter becomes narrower in a certain region from the end portion (upper end portion) on the top plate portion 2A side toward the bottom wall portion 72 side.
  • Notch 73a is molded.
  • the end portion 63b of the insulator 63 and the inner peripheral surface of the substrate 8 are located in the notch portion 73a.
  • the bottom wall portion 72 is provided with an air intake port (not shown) that connects the space inside the case 7 and the space outside the case 7 and sucks air into the case 7.
  • the intake port of the bottom wall portion 72 may be a hole that communicates the space inside the case 7 and the space outside the case 7, and may be formed of a material such as a mesh. ..
  • FIG. 3 is an exploded cross-sectional view of the blower 101 shown in FIG.
  • FIG. 4 is a cross-sectional view for explaining an operation of fixing the shaft 1 to the hub 2.
  • FIG. 5 is a cross-sectional view for explaining an operation of fixing the state shown in FIG. 4 to the case 7.
  • the bearing 4 is fixed inside the sleeve 5.
  • the bearing 4 is fixed to the sleeve 5 by fitting the outer rings 41a and 42a of the bearings 41 and 42 into the large inner diameter portion 54, respectively.
  • the shaft 1 is fitted into the bearing 4 to fix the shaft 1 inside the sleeve 5 and assemble the cartridge member C.
  • the cartridge member C may be assembled in advance at another location.
  • the cartridge member C is fixed inside the stator 6.
  • the cartridge member C is fixed to the stator 6 by applying an adhesive to the outer peripheral surface 5c of the sleeve 5 and inserting the sleeve 5 into the stator core 61 in the direction of arrow D1.
  • the sleeve 5 is inserted into the stator 6 until the convex portion 52 of the sleeve 5 comes into contact with the top plate portion 2A side (upper side) of the stator core 61 of the stator 6. At this time, the stator 6 holds the insulator 63 and inserts the cartridge member C. Then, by pressing the flange portion 51 in the direction of the arrow D1, the stator 6 is fixed to the outer circumference of the sleeve 5.
  • the shaft 1 is fixed to the top plate portion 2A of the hub 2.
  • the shaft 1 is fixed to the top plate portion 2A by press-fitting the upper end of the shaft 1 into the inside of the mounting member tubular portion 23a of the shaft mounting member 23 in the direction of arrow D2.
  • the cartridge member C is inserted by pressing the lower end portion of the shaft 1 in the direction of the arrow D2 while holding the hub 2 side.
  • the shaft 1 may be fixed to the top plate portion 2A by applying an adhesive to the inside of the mounting member tubular portion 23a and using both press-fitting and the adhesive. Further, in addition to fixing with an adhesive, in addition to press-fitting, fixing by welding or the like may be used in combination to increase the strength.
  • the hole portion 20a is located on the top plate portion 2A side of the flange portion 51.
  • the end of the sleeve 5 on the opposite side (lower side) of the top plate 2A is press-fitted into the case tubular portion 73, so that the end of the sleeve 5 is pressed into the case tubular portion. It is fixed to 73.
  • a rod-shaped jig (not shown) is inserted into the hole 20a of the top plate portion 2A from above to below, and the flange portion 51 of the sleeve 5 is pressed in the direction of arrow D4. Do it by.
  • the sleeve 5 may be fixed to the case tubular portion 73 by applying an adhesive to the inside of the case tubular portion 73 and using both press-fitting and the adhesive. Further, in addition to fixing with an adhesive, in addition to press-fitting, fixing by welding or the like may be used in combination to increase the strength.
  • the jig (not shown) is a comb-blade-shaped jig having three rod-shaped bodies capable of simultaneously inserting rod-shaped bodies through the three hole portions 20a and simultaneously pressing the flange portion 51.
  • the blower 101 of the present embodiment has all of the mounting member tubular portion 23a of the shaft mounting member 23 and the upper end of the shaft 1, and the case tubular portion 73 and the lower end of the sleeve 5. Is fixed by press fitting.
  • the top plate portion 2A is provided with a hole portion 20a that opens toward the end portion of the sleeve 5 on the top plate portion 2A side in the rotation axis X direction of the shaft 1. Therefore, by inserting a jig into the hole 20a and pressing the sleeve 5 downward, the lower end of the sleeve 5 can be press-fitted into the case tubular portion 73 to be fixed. In this way, since the lower end portion of the sleeve 5 can be fixed by press fitting, a gap between the sleeve 5 and the case tubular portion 73 is less likely to occur, and the verticality of the shaft 1 can be increased.
  • the sleeve 5 has a flange portion 51 extending in the direction perpendicular to the rotation axis X direction of the shaft 1 at the end portion on the top plate portion 2A side, and the hole portion 20a is the shaft. It opens toward the flange portion 51 in the X direction of the rotation axis. Therefore, when the jig is inserted into the hole 20a and the sleeve 5 is pressed downward, the jig is abutted against the flange 51 and the sleeve 5 is pressed downward to push the sleeve 5 downward. It can be easily press-fitted into 73.
  • the sleeve 5 has a convex portion 52 on the top plate portion 2A side of the stator 6 that projects in a direction perpendicular to the rotation axis X direction of the shaft 1 and comes into contact with the stator 6. Therefore, the stator 6 can be positioned with respect to the sleeve 5 by inserting the stator 6 until the top plate portion 2A side (upper side) of the coil 62 comes into contact with the convex portion 52.
  • the sleeve 5, the first bearing 41, and the second bearing 42 constitute one cartridge member C. Therefore, the assembly work at the time of manufacturing becomes easy. Further, for example, when the bearing 4 is damaged, the cartridge member C may be replaced together with the cartridge member C, so that the replacement work is easy, the repair can be performed easily, and the cost can be reduced.
  • the inner surface of the case 7 has a first tubular portion (case tubular portion 73) that stands upright in the internal direction, and the case tubular portion 73 has a top plate of the sleeve 5.
  • the sleeve 5 is fixed to the case 7 by fitting and fixing the end portion on the opposite side to the portion 2A. Then, when fixing the sleeve 5 to the case tubular portion 73, the sleeve 5 is easily press-fitted into the case tubular portion 73 by inserting a jig into the hole portion 20a and pressing the sleeve 5 downward.
  • the sleeve 5 can be firmly fixed to the case tubular portion 73.
  • a second tubular portion (mounting member tubular portion 23a) erected on the sleeve 5 side is provided at the center of the top plate portion 2A, and the shaft 1 is attached to the mounting member tubular portion 23a.
  • the top plate portion 2A is fixed to the shaft 1 by fitting and fixing one end of the top plate portion 2A. Therefore, even though the top plate portion 2A is fixed to the shaft 1, a jig is inserted into the hole portion 20a and the sleeve 5 is pressed downward to push the sleeve 5 onto the case tubular portion 73. Can be fixed.
  • the motor of the present invention is not limited to the configuration of the above embodiment.
  • the sleeve 5 may have a configuration without the flange portion 51.
  • the hole portion 20a is configured to open toward the upper end portion of the sleeve 5, and a jig is inserted into the hole portion 20a to bring it into contact with the upper end portion of the sleeve 5 and press it.
  • the sleeve 5 can be press-fitted into the case tubular portion 73.
  • the top plate portion 2A has a hole portion 20a that opens toward the flange portion 51 of the sleeve 5, and the truncated cone portion 2C has a space outside the blower 101 and a space inside the hub 2.
  • the holes 20c which communicate with the above, are provided, for example, only the holes 20a may be provided and the holes 20c may not be provided. That is, the hole 20a may have both a function of inserting a jig and a function of generating an air flow.
  • the top plate portion 2A may have a configuration without the hole portion 20a.
  • a hook portion is provided at the tip from the opening (intake port) of the bottom wall portion 72 of the case 7.
  • the lower side of the sleeve 5 can be press-fitted into the case tubular portion 73.
  • any of the mounting member tubular portion 23a of the shaft mounting member 23 and the upper end of the shaft 1 and the case tubular portion 73 and the lower end of the sleeve 5 can be press-fitted.
  • the top plate portion 2A includes the cup portion 21 and the yoke 31
  • the yoke 31 is not a cup shape but a tubular shape
  • the top plate portion 2A is a cup portion. It may be composed of only 21.
  • the cup portion 21 may have a tubular shape instead of a cup shape, and the top plate portion 2A may be formed only by the cup-shaped yoke 31.

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

Abstract

Provided are a motor and a blower device having a shaft (rotational axis) of which perpendicularity is increased easily in a simple configuration. A motor 100 is provided with: a shaft (1); a top plate portion (2A) fixed to one end of the shaft (1) and extending perpendicularly to the axial direction of the shaft (1); a bearing (4) fixed to the shaft (1); a tubular sleeve (5) housing the bearing (4); a stator (6) fixed to the outer periphery of the sleeve (5); and a rotor (3) surrounding the stator (6). The top plate portion (2A) and the rotor (3) are fixed together, and the top plate portion (2A) has a hole portion (20a) opening toward an end portion of the sleeve (5) on the top plate portion (2A) side in the axial direction of the shaft (1).

Description

モータ及び送風装置Motor and blower
　本発明は、モータ及び送風装置に関する。 The present invention relates to a motor and a blower.
　従来、シャフトと、当該シャフトに固定された軸受と、当該軸受を収容する筒状のスリーブと、当該スリーブの外周部に固定されるステータと、当該ステータを取り囲むロータを含みシャフトの一端に固定されたロータハブと、これらを収容するケースからなる、いわゆるアウタロータタイプのモータや、ロータハブにインペラが固定された送風装置が知られている（例えば、特許文献１参照）。 Conventionally, the shaft, the bearing fixed to the shaft, the tubular sleeve accommodating the bearing, the stator fixed to the outer peripheral portion of the sleeve, and the rotor surrounding the stator are fixed to one end of the shaft. A so-called outer rotor type motor including a rotor hub and a case for accommodating these, and a blower device in which an impeller is fixed to the rotor hub are known (see, for example, Patent Document 1).
特開２０１６－４４５５３号公報Japanese Unexamined Patent Publication No. 2016-44553
　上述のようなモータや送風装置では、組み立ての際、スリーブとケースとは接着剤等により固定をしているが、接着剤による固定の場合には、シャフト（回転軸）の垂直度を確保するために、両者の固定箇所の隙間ができないようにすることが求められ、高い取り付け精度が求められたり、取り付け作業の煩雑化を招いたりする懸念があった。 In the above-mentioned motors and blowers, the sleeve and the case are fixed with an adhesive or the like at the time of assembly, but in the case of fixing with an adhesive, the verticality of the shaft (rotating shaft) is secured. Therefore, it is required to prevent a gap between the two fixing points, and there is a concern that high mounting accuracy is required and the mounting work is complicated.
　したがって、本発明は、以上の背景に鑑みてなされたものであり、簡易な構成でありながらシャフト（回転軸）の垂直度を高めることが容易なモータ及び送風装置を提供することを課題の一例とする。 Therefore, the present invention has been made in view of the above background, and an example of a problem is to provide a motor and a blower capable of easily increasing the verticality of a shaft (rotating shaft) while having a simple configuration. And.
　上記目的は、以下の本発明によって達成される。即ち、本発明のモータの一態様としては、シャフトと、
　前記シャフトの一端に固定され、前記シャフトの軸方向に対して垂直方向に広がる天板部と、
　前記シャフトに固定された軸受と、
　前記軸受を収容する筒状のスリーブと、
　前記スリーブの外周部に固定されるステータと、
　前記ステータを取り囲むロータと、
を備え、
　前記天板部と前記ロータとが固定されており、
　前記天板部には、前記シャフトの軸方向において、前記スリーブの前記天板部側の端部に向けて開口する孔部が設けられている。 The above object is achieved by the following invention. That is, as one aspect of the motor of the present invention, the shaft and
A top plate portion fixed to one end of the shaft and extending in a direction perpendicular to the axial direction of the shaft,
The bearing fixed to the shaft and
A tubular sleeve that houses the bearing and
A stator fixed to the outer peripheral portion of the sleeve and
The rotor surrounding the stator and
With
The top plate portion and the rotor are fixed to each other.
The top plate portion is provided with a hole portion that opens toward the end portion of the sleeve on the top plate portion side in the axial direction of the shaft.
　本発明のモータにおいて、前記天板部と前記ロータとが一体化してハブを構成していることが好ましい。
　前記スリーブが、前記天板部側の端部に、前記シャフトの軸方向に対して垂直方向に広がるフランジ部を有し、
　前記孔部が、前記シャフトの軸方向において、前記フランジ部に向けて開口しているものとすることができる。 In the motor of the present invention, it is preferable that the top plate portion and the rotor are integrated to form a hub.
The sleeve has a flange portion extending in a direction perpendicular to the axial direction of the shaft at an end portion on the top plate portion side.
The hole may be open toward the flange in the axial direction of the shaft.
　本発明のモータにおいて、前記スリーブが、前記ステータの前記天板部側で、前記シャフトの軸方向に対して垂直方向に張り出して、前記ステータと係合する凸部を有するものとすることができる。
　前記軸受は、少なくとも、前記シャフトにおける、前記天板部が固定された一端側寄りに位置する第一軸受と、前記一端側とは反対側の他端側寄りに位置する第二軸受と、を有し、
　少なくとも、前記スリーブ、前記第一軸受及び前記第二軸受で、１つのカートリッジ部材を構成していることが好ましい。 In the motor of the present invention, the sleeve may have a convex portion on the top plate side of the stator that projects in a direction perpendicular to the axial direction of the shaft and engages with the stator. ..
The bearing includes at least a first bearing of the shaft located closer to one end to which the top plate is fixed and a second bearing located closer to the other end of the shaft opposite to the one end side. Have and
At least, it is preferable that the sleeve, the first bearing, and the second bearing constitute one cartridge member.
　本発明のモータにおいて、他の構成部材の全部または一部を内部に収容するケースを備え、
　前記ケースの内面には、内部方向に立設する第１の筒状部を有し、
　前記第１の筒状部に、前記スリーブの前記天板部とは逆側の端部が嵌入して固定されることで、前記スリーブが前記ケースに固定されているものとすることができる。 The motor of the present invention includes a case for accommodating all or a part of other constituent members inside.
The inner surface of the case has a first tubular portion that stands upright in the internal direction.
The sleeve can be fixed to the case by fitting and fixing the end portion of the sleeve opposite to the top plate portion to the first tubular portion.
　本発明のモータにおいて、前記天板部の中心には、前記スリーブ側に立設する第２の筒状部を有し、
　前記第２の筒状部に、前記シャフトの一端が嵌入して固定されることで、前記天板部が前記シャフトに固定されているものとすることができる。 In the motor of the present invention, a second tubular portion erected on the sleeve side is provided at the center of the top plate portion.
By fitting and fixing one end of the shaft to the second tubular portion, the top plate portion can be fixed to the shaft.
　本発明のモータにおいて、前記天板部の中心には、前記スリーブ側に立設する第２の筒状部を有し、
　前記第２の筒状部に、前記シャフトの一端が嵌入して固定されることで、前記天板部が前記シャフトに固定されており、
　前記第１の筒状部と、前記スリーブの前記天板部とは逆側の端部、及び、前記第２の筒状部と、前記シャフトの一端、のいずれか一方もしくは双方が、圧入もしくは圧入を含む固定方法による固定であるものとすることができる。 In the motor of the present invention, a second tubular portion erected on the sleeve side is provided at the center of the top plate portion.
The top plate portion is fixed to the shaft by fitting and fixing one end of the shaft to the second tubular portion.
Either or both of the first tubular portion, the end of the sleeve opposite to the top plate portion, and the second tubular portion and one end of the shaft are press-fitted or It can be fixed by a fixing method including press fitting.
　本発明のモータの一態様としては、シャフトと、
　前記シャフトの一端に固定され、前記シャフトの軸方向に対して垂直方向に広がる天板部と、
　前記シャフトに固定された軸受と、
　前記軸受を収容する筒状のスリーブと、
　前記スリーブの外周に固定されるステータと、
　前記ステータを取り囲むロータと、
　他の構成部材の全部または一部を内部に収容するケースと、
を備え、
　前記天板部と前記ロータとが固定されており、
　前記ケースの内面には、内部方向に立設する第１の筒状部を有し、
　前記天板部の中心には、前記スリーブ側に立設する第２の筒状部を有し、
　前記第１の筒状部と、前記スリーブの前記天板部とは逆側の端部、及び、前記第２の筒状部と、前記シャフトの一端、がいずれも圧入もしくは圧入を含む固定方法により固定されている。 As one aspect of the motor of the present invention, a shaft and
A top plate portion fixed to one end of the shaft and extending in a direction perpendicular to the axial direction of the shaft,
The bearing fixed to the shaft and
A tubular sleeve that houses the bearing and
A stator fixed to the outer circumference of the sleeve,
The rotor surrounding the stator and
A case that houses all or part of other components inside,
With
The top plate portion and the rotor are fixed to each other.
The inner surface of the case has a first tubular portion that stands upright in the internal direction.
At the center of the top plate portion, there is a second tubular portion that stands on the sleeve side.
A fixing method in which the first tubular portion, the end portion of the sleeve opposite to the top plate portion, and the second tubular portion and one end of the shaft are all press-fitted or press-fitted. Is fixed by.
　本発明の送風装置の一態様としては、前記モータと、
　前記天板部に固定されたインペラと、を有する。 As one aspect of the blower device of the present invention, the motor and
It has an impeller fixed to the top plate portion.
　本発明によれば、簡易な構成でありながらシャフト（回転軸）の垂直度を高めることが容易なモータを提供することができる。 According to the present invention, it is possible to provide a motor having a simple structure but easily increasing the verticality of the shaft (rotating shaft).
本発明の一例である実施形態にかかるモータが適用された送風装置の斜視図である。It is a perspective view of the blower to which the motor which concerns on embodiment which is an example of this invention is applied. 図１中に示すＡ－Ａ断面図である。FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. 図２に示す送風装置の分解断面図である。It is an exploded sectional view of the blower shown in FIG. シャフトをハブに固定する操作について説明するための断面図である。It is sectional drawing for demonstrating the operation which fixes a shaft to a hub. 図４に示す状態のものをケースに固定する操作について説明するための断面図である。FIG. 5 is a cross-sectional view for explaining an operation of fixing the state shown in FIG. 4 to a case.
　以下、本発明の実施形態にかかるモータ及び送風装置について、図面を参照しながら説明する。
　図１は、実施形態にかかるモータ１００が適用された送風装置１０１の斜視図であり、図２は、図１におけるＡ－Ａ断面図である。 Hereinafter, the motor and the blower according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a blower device 101 to which the motor 100 according to the embodiment is applied, and FIG. 2 is a cross-sectional view taken along the line AA in FIG.
　なお、本実施形態の説明において、上方乃至下方と云う時は、図２における上下関係を意味し、重力方向における上下関係とは、必ずしも一致しない。また、本実施形態の説明において、左乃至右と云う時は、図２における左右関係を意味する。これらは、図２以外の全ての図面においても同様である。 In the description of the present embodiment, the terms "upper" and "lower" mean the vertical relationship in FIG. 2, and do not necessarily match the vertical relationship in the direction of gravity. Further, in the description of the present embodiment, the terms left to right mean the left-right relationship in FIG. These are the same in all the drawings except FIG.
　以下の説明では、本実施形態にかかるモータ１００を、インペラ２２を回転させることにより吸い込んだ空気を排出する送風装置１０１に適用した例で説明する。
　送風装置１０１のモータ１００は、シャフト１と、シャフト１の一端に固定されたハブ２と、シャフト１に固定された軸受４と、軸受４を収容する筒状のスリーブ５と、スリーブ５の外周部に固定されるステータ６と、これらの構成部材を内部に収容するケース７と、を有して構成されている。 In the following description, an example will be described in which the motor 100 according to the present embodiment is applied to the blower 101 that discharges the sucked air by rotating the impeller 22.
The motor 100 of the blower 101 includes a shaft 1, a hub 2 fixed to one end of the shaft 1, a bearing 4 fixed to the shaft 1, a tubular sleeve 5 accommodating the bearing 4, and an outer circumference of the sleeve 5. It is configured to have a stator 6 fixed to a portion and a case 7 for accommodating these constituent members inside.
　シャフト１は、モータ１００の上方から見た中心に位置して、上下方向に延在している。シャフト１は、軽量化のために、例えばアルミニウムで形成されている。シャフト１の一端（図２における上端）には、ハブ２が固定されている。
　シャフト１とハブ２は、ハブ２の一部を構成するシャフト取付部材２３により固定されている。なお、本実施形態において、「周方向」と云うときは、シャフト１の回転軸線Ｘを中心とする円の周方向を意味する。 The shaft 1 is located at the center of the motor 100 as viewed from above, and extends in the vertical direction. The shaft 1 is made of, for example, aluminum for weight reduction. A hub 2 is fixed to one end (upper end in FIG. 2) of the shaft 1.
The shaft 1 and the hub 2 are fixed by a shaft mounting member 23 that forms a part of the hub 2. In the present embodiment, the term "circumferential direction" means the circumferential direction of a circle centered on the rotation axis X of the shaft 1.
　ハブ２は、全体としてカップ形状をした樹脂製のカップ部２１と、カップ部２１のカップ内にはめ込まれたカップ形状のヨーク３１と、ヨーク３１の内周面に、ステータ６を取り囲む状態で取り付けられたマグネット３２と、カップ部２１の外周面に固定されたインペラ２２と、を有して構成されている。なお、この内のヨーク３１とマグネット３２とで、ロータ３が構成されている。 The hub 2 is attached to a cup-shaped resin cup portion 21 as a whole, a cup-shaped yoke 31 fitted in the cup of the cup portion 21, and an inner peripheral surface of the yoke 31 so as to surround the stator 6. It is configured to have a magnet 32 and an impeller 22 fixed to the outer peripheral surface of the cup portion 21. The rotor 3 is composed of the yoke 31 and the magnet 32.
　また、ハブ２は、その形状面から、シャフト１の一端に固定され、シャフト１の軸方向（回転軸線Ｘ方向）に対して垂直方向に広がる天板部２Ａと、回転軸線方向Ｘと同軸上の円筒体である円筒部２Ｂと、天板部２Ａの外周と円筒部２Ｂの上端とを連結する円錐台形状の円錐台部２Ｃとに分けられる。天板部２Ａ、円筒部２Ｂ及び円錐台部２Ｃは、いずれも、基本的にカップ部２１とヨーク３１とを含む２層構成以上の積層構造となっている。 Further, the hub 2 is fixed to one end of the shaft 1 from its shape surface and extends in a direction perpendicular to the axial direction of the shaft 1 (rotation axis X direction), and is coaxial with the rotation axis direction X. It is divided into a cylindrical portion 2B, which is a cylindrical body of the above, and a truncated cone-shaped truncated cone portion 2C connecting the outer circumference of the top plate portion 2A and the upper end of the cylindrical portion 2B. The top plate portion 2A, the cylindrical portion 2B, and the truncated cone portion 2C all basically have a laminated structure of two or more layers including the cup portion 21 and the yoke 31.
　カップ部２１における天板部２Ａには、内部側から上方側へ凹んだ凹部２１ａが設けられている。
　この凹部２１ａには、後述するシャフト１の取付部材（以下、「シャフト取付部材」と称する。）の一部が収容されている。 The top plate portion 2A of the cup portion 21 is provided with a recess 21a recessed from the inner side to the upper side.
A part of the mounting member of the shaft 1 (hereinafter, referred to as “shaft mounting member”) described later is housed in the recess 21a.
　天板部２Ａには、回転軸線Ｘ方向において、スリーブ５の天板部２Ａ側の端部（後述するフランジ部５１）に向けて開口する円管状の孔部２０ａが複数（本実施形態では、３個。）設けられている。
　孔部２０ａは、回転軸線Ｘに対して平行に設けられており、送風装置１０１の外部の空間とハブ２の内部の空間とを連通している。 The top plate portion 2A has a plurality of circular tubular holes 20a that open toward the end portion (flange portion 51 described later) of the sleeve 5 on the top plate portion 2A side in the rotation axis X direction (in this embodiment, the top plate portion 2A has a plurality of circular tubular holes 20a. 3 pieces.) It is provided.
The hole 20a is provided parallel to the rotation axis X, and communicates the space outside the blower 101 with the space inside the hub 2.
　また、天板部２Ａは、ハブ２の内周面の一部がヨーク３１に形成された孔部３０ａに挿通されてヨーク３１の内壁部３１ｄに溶着された溶着部２０ｂを有している。この溶着部２０ｂにより、天板部２Ａとヨーク３１を含むロータ３とが固定されて一体化してハブ２を構成している。 Further, the top plate portion 2A has a welded portion 20b in which a part of the inner peripheral surface of the hub 2 is inserted into the hole portion 30a formed in the yoke 31 and welded to the inner wall portion 31d of the yoke 31. The top plate portion 2A and the rotor 3 including the yoke 31 are fixed and integrated by the welded portion 20b to form the hub 2.
　円錐台部２Ｃには、送風装置１０１の外部の空間とハブ２の内部の空間とを連通する孔部２０ｃが複数設けられている。
　孔部２０ｃは、インペラ２２の回転によって、ハブ２の内部に空気流を生じさせるようになっている。 The truncated cone portion 2C is provided with a plurality of hole portions 20c for communicating the space outside the blower 101 and the space inside the hub 2.
The hole 20c is adapted to generate an air flow inside the hub 2 by the rotation of the impeller 22.
　ヨーク３１は、天板部２Ａの中心に円形開口部３１ａが形成されており、この円形開口部３１ａに、後述するシャフト取付部材２３が嵌め込まれて固定されている。ヨーク３１は、磁性体により形成されるが、特性上問題がなければ、アルミニウム等の非磁性体で形成しても構わない。 The yoke 31 has a circular opening 31a formed in the center of the top plate portion 2A, and a shaft mounting member 23, which will be described later, is fitted and fixed to the circular opening 31a. The yoke 31 is formed of a magnetic material, but may be formed of a non-magnetic material such as aluminum if there is no problem in characteristics.
　一方、マグネット３２は、円筒部２Ｂにおいて、ヨーク３１の内周面に、ステータ６と対向するように取り付けられている。マグネット３２は環状を有しており、Ｎ極に着磁された領域と、Ｓ極に着磁された領域とが、周方向に沿って一定の周期で交互に設けられている。 On the other hand, the magnet 32 is attached to the inner peripheral surface of the yoke 31 in the cylindrical portion 2B so as to face the stator 6. The magnet 32 has an annular shape, and a region magnetized on the north pole and a region magnetized on the south pole are alternately provided along the circumferential direction at regular intervals.
　シャフト取付部材２３は、筒状の第２の筒状部（以下、第２の筒状部を「取付部材筒状部」と称する。）２３ａと、環状の環状部２３ｂ，２３ｃと、からなる。
　取付部材筒状部２３ａは、内部にシャフト１の一端（上端）が圧入により固定されている。 The shaft mounting member 23 includes a tubular second tubular portion (hereinafter, the second tubular portion is referred to as a “mounting member tubular portion”) 23a and an annular annular portion 23b, 23c. ..
One end (upper end) of the shaft 1 is fixed to the inside of the mounting member tubular portion 23a by press fitting.
　環状部２３ｂ及び環状部２３ｃは、取付部材筒状部２３ａの外周面における回転軸線Ｘ方向に互いに離れた位置で、回転軸線Ｘから遠ざかる方向へ突出して設けられている。
　環状部２３ｂと環状部２３ｃとの間には、ヨーク３１の円形開口部３１ａの淵が挟み込まれている。即ち、環状部２３ｂと環状部２３ｃとは、ヨーク３１の厚さと略同じ長さ分だけ離れている。 The annular portion 23b and the annular portion 23c are provided at positions separated from each other in the rotation axis X direction on the outer peripheral surface of the mounting member tubular portion 23a, and project in a direction away from the rotation axis X.
The edge of the circular opening 31a of the yoke 31 is sandwiched between the annular portion 23b and the annular portion 23c. That is, the annular portion 23b and the annular portion 23c are separated by substantially the same length as the thickness of the yoke 31.
　取付部材筒状部２３ａの天板部２Ａ側、及び、環状部２３ｂは、天板部２Ａの凹部２１ａに収容されている。
　一方、環状部２３ｂ、及び、取付部材筒状部２３ａの下方（軸受４）側は、ヨーク３１の内部に収容されている。 The top plate portion 2A side of the mounting member tubular portion 23a and the annular portion 23b are housed in the recess 21a of the top plate portion 2A.
On the other hand, the annular portion 23b and the lower (bearing 4) side of the mounting member tubular portion 23a are housed inside the yoke 31.
　シャフト１は、軸受４に嵌入された状態で固定されている。軸受４は、第一軸受４１と第二軸受４２の２つが一定の間隔を置いてシャフト１に取り付けられている。第一軸受４１は、シャフト１における、天板部２Ａが固定された上方側（一端側）寄りに位置する。また、第二軸受４２は、下方側（一端側とは反対側の他端側）寄りに位置する。 The shaft 1 is fixed in a state of being fitted into the bearing 4. Two bearings 4, a first bearing 41 and a second bearing 42, are attached to the shaft 1 at regular intervals. The first bearing 41 is located on the shaft 1 closer to the upper side (one end side) to which the top plate portion 2A is fixed. Further, the second bearing 42 is located closer to the lower side (the other end side opposite to one end side).
　軸受４１，４２は、外輪４１ａ，４２ａと、内輪４１ｂ，４２ｂと、外輪４１ａ，４２ａ及び内輪４１ｂ，４２ｂ間に介在するボール（ベアリングボール）４１ｃ，４２ｃと、からなる、いわゆるボールベアリングである。ボール４１ｃが外輪４１ａと内輪４１ｂとの間で転がることにより、外輪４１ａに対する内輪４１ｂの回転抵抗が大幅に少なくなるようになっている。軸受４１は、その機能から、例えば、鉄等の硬質の金属やセラミックスの部材で形成されている。シャフト１は、内輪４１ｂ，４２ｂに固定されており、外輪４１ａ，４２ａに対して回転自在になっている。 The bearings 41 and 42 are so-called ball bearings composed of outer rings 41a and 42a, inner rings 41b and 42b, and balls (bearing balls) 41c and 42c interposed between the outer rings 41a and 42a and the inner rings 41b and 42b. By rolling the ball 41c between the outer ring 41a and the inner ring 41b, the rotational resistance of the inner ring 41b with respect to the outer ring 41a is significantly reduced. Due to its function, the bearing 41 is made of, for example, a hard metal such as iron or a ceramic member. The shaft 1 is fixed to the inner rings 41b and 42b, and is rotatable with respect to the outer rings 41a and 42a.
　軸受４１，４２は、スリーブ５に収容されている。スリーブ５は、筒状（特に円筒状）の形状を有する部材であり、例えば、プラスチックあるいは金属で形成されている。
　スリーブ５は、天板部２Ａ側の端部に設けられたフランジ部５１と、外周面５ｃに設けた凸部５２と、を有している。 The bearings 41 and 42 are housed in the sleeve 5. The sleeve 5 is a member having a tubular shape (particularly a cylindrical shape), and is made of, for example, plastic or metal.
The sleeve 5 has a flange portion 51 provided at the end portion on the top plate portion 2A side, and a convex portion 52 provided on the outer peripheral surface 5c.
　フランジ部５１は、スリーブ５の天板部２Ａ側の端部から回転軸線Ｘ方向に対して垂直な方向に広がっている。
　フランジ部５１の上方（天板部２Ａ）側には孔部２０ａが位置する。即ち、孔部２０ａを構成する管の延在する軸上にフランジ部５１が位置するように、フランジ部５１がスリーブ５の上端から延出している。 The flange portion 51 extends in a direction perpendicular to the rotation axis X direction from the end portion of the sleeve 5 on the top plate portion 2A side.
The hole portion 20a is located on the upper side (top plate portion 2A) of the flange portion 51. That is, the flange portion 51 extends from the upper end of the sleeve 5 so that the flange portion 51 is located on the extending shaft of the pipe forming the hole portion 20a.
　凸部５２は、スリーブ５の外周面５ｃから回転軸線Ｘ方向に対して垂直な方向に張り出しており、後述するステータ６のステータコア６１の天板部２Ａ側（上方側）と接触している。
　スリーブ５の内周面には、回転軸線Ｌにおける中央部が回転軸線Ｌに向けて突出した突出部（小径の内周部）５３、回転軸線Ｌにおける両側が回転軸線Ｌから遠ざかる方向へ凹んだ凹部（大径の内周部）５４となっている。以下、突出部５３を小内径部５３と呼称し、凹部５４を大内径部５４と呼称する。 The convex portion 52 projects from the outer peripheral surface 5c of the sleeve 5 in a direction perpendicular to the rotation axis X direction, and is in contact with the top plate portion 2A side (upper side) of the stator core 61 of the stator 6, which will be described later.
On the inner peripheral surface of the sleeve 5, the central portion of the rotation axis L protrudes toward the rotation axis L (small diameter inner peripheral portion) 53, and both sides of the rotation axis L are recessed in a direction away from the rotation axis L. It is a concave portion (inner peripheral portion having a large diameter) 54. Hereinafter, the protruding portion 53 is referred to as a small inner diameter portion 53, and the concave portion 54 is referred to as a large inner diameter portion 54.
　なお、スリーブ５は、小内径部５３と大内径部５４とを有する形状となるように公知の手法によって一体成型で形成してもよいが、例えば、大内径部５４の内径及び外径を有する大径の円管（以下、「大径円管」と称する。）の内部に、小内径部５３の内径と同径の内径と、大内径部５４の内径と同径の外径と、を有する小径の円管（以下、「小径円管」と称する。）を挿し込んで、回転軸線Ｌ方向において大径円管の略中央に小径円管が位置するようにして、スリーブ５を２つ以上の複数の部材で形成してもよい。この際、小径円管は、大径円管と異なる部材で形成してもよく、例えば、螺旋状のスプリングのような弾性部材を用いることができる。 The sleeve 5 may be integrally molded by a known method so as to have a shape having a small inner diameter portion 53 and a large inner diameter portion 54. For example, the sleeve 5 has an inner diameter and an outer diameter of the large inner diameter portion 54. Inside the large-diameter circular tube (hereinafter referred to as "large-diameter circular tube"), an inner diameter having the same diameter as the inner diameter of the small inner diameter portion 53 and an outer diameter having the same diameter as the inner diameter of the large inner diameter portion 54 are provided. Two sleeves 5 are inserted by inserting a small-diameter circular tube (hereinafter referred to as "small-diameter circular tube") so that the small-diameter circular tube is located substantially in the center of the large-diameter circular tube in the L direction of the rotation axis. It may be formed of the above-mentioned plurality of members. At this time, the small-diameter circular tube may be formed of a member different from that of the large-diameter circular tube, and for example, an elastic member such as a spiral spring can be used.
　２つの軸受４１，４２の外輪４１ａ，４２ａは、スリーブ５の２つの大内径部５４にそれぞれ嵌め込まれるとともに固定されて、スリーブ５に支持されている。一方、シャフト１は２つの軸受４１，４２の内輪４１ｂ，４２ｂに嵌め込まれるとともに固定されて、２つの軸受４１，４２に支持されている。したがって、シャフト１は、スリーブ５に対して回転自在となるように支持されている。 The outer rings 41a and 42a of the two bearings 41 and 42 are fitted and fixed to the two large inner diameter portions 54 of the sleeve 5, respectively, and are supported by the sleeve 5. On the other hand, the shaft 1 is fitted and fixed to the inner rings 41b and 42b of the two bearings 41 and 42, and is supported by the two bearings 41 and 42. Therefore, the shaft 1 is supported so as to be rotatable with respect to the sleeve 5.
　本実施形態において、スリーブ５、第一軸受４１及び第二軸受４２で、１つのカートリッジ部材を構成している。予め、スリーブ５に、第一軸受４１及び第二軸受４２を組み付けた状態のカートリッジ部材を１つの部品とすることで、製造する際には、組み立て作業が容易になる。また、例えば、軸受４が破損した場合には、カートリッジ部材ごと交換すればよいので、交換作業が容易であり、容易な作業で修理をすることができ、低コスト化にも繋がる。 In the present embodiment, the sleeve 5, the first bearing 41, and the second bearing 42 constitute one cartridge member. By forming the cartridge member in which the first bearing 41 and the second bearing 42 are assembled to the sleeve 5 in advance as one component, the assembling work becomes easy at the time of manufacturing. Further, for example, when the bearing 4 is damaged, the entire cartridge member may be replaced, so that the replacement work is easy, the repair can be performed easily, and the cost can be reduced.
　また、部品点数が少ない段階であるカートリッジ部材の状態で回転バランスを調整するのは、比較的容易である。そのため、カートリッジ部材の状態で回転バランスを調整しておくことで、モータを製造または修理する際、あるいは、製造または修理した後の回転バランスの作業を省略することができるか、あるいは、簡単な作業で済ますことができ、製造または修理の作業を簡略化できる。したがって、この点でも、低コスト化に繋がる可能性がある。 Also, it is relatively easy to adjust the rotational balance in the state of the cartridge member, which is at the stage where the number of parts is small. Therefore, by adjusting the rotation balance in the state of the cartridge member, it is possible to omit the operation of the rotation balance when manufacturing or repairing the motor, or after manufacturing or repairing, or a simple operation. Can be done, and the manufacturing or repair work can be simplified. Therefore, this point may also lead to cost reduction.
　カートリッジ部材としては、少なくとも、スリーブ５、第一軸受４１及び第二軸受４２の３つの部品で構成することができるが、さらに、シャフト１を軸受４内に嵌挿させて固定した状態で、１つのカートリッジ部材を構成してもよい。前記３つの部品にシャフト１を組み込んだ状態のカートリッジ部材とすることで、カートリッジ部材の状態での回転バランスの調整をより精度よく実施することができ、また、製造乃至修理の作業もより容易にすることができる。 The cartridge member can be composed of at least three parts, a sleeve 5, a first bearing 41, and a second bearing 42. Further, in a state where the shaft 1 is fitted and inserted into the bearing 4 and fixed, 1 One cartridge member may be configured. By using the cartridge member in which the shaft 1 is incorporated in the above three parts, it is possible to more accurately adjust the rotation balance in the state of the cartridge member, and the manufacturing or repair work is also easier. can do.
　スリーブ５は、天板部２Ａとは逆側（下方側）の端部が、後に詳述するケース７の筒状部に嵌入して固定されることで、スリーブ５がケース７に固定されている。スリーブ５に支持されたシャフト１は、ケース７に対して回転自在となるように支持されており、モータ１００の回転力が取り出せるようになっている。 The sleeve 5 is fixed to the case 7 by fitting and fixing the end portion on the opposite side (lower side) of the top plate portion 2A to the tubular portion of the case 7, which will be described in detail later. There is. The shaft 1 supported by the sleeve 5 is supported so as to be rotatable with respect to the case 7, so that the rotational force of the motor 100 can be taken out.
　スリーブ５を取り囲むステータ６は、ステータコア６１と、コイル６２と、インシュレータ６３と、を有している。ステータ６は、内周側がスリーブ５の凸部５２に係合することによりスリーブ５に固定されている。
　ステータコア６１は、シャフト１と同軸上に配された円環状の珪素鋼板等の積層体となっている。 The stator 6 surrounding the sleeve 5 has a stator core 61, a coil 62, and an insulator 63. The stator 6 is fixed to the sleeve 5 by engaging the inner peripheral side with the convex portion 52 of the sleeve 5.
The stator core 61 is a laminate of an annular silicon steel plate or the like arranged coaxially with the shaft 1.
　コイル６２は、ステータコア６１の周囲に巻回されている。ステータコア６１とコイル６２とは、絶縁体で形成されたインシュレータ６３によって絶縁されている。なお、インシュレータ６３に代えて、ステータコア６１の表面に絶縁膜を塗装してコイル６２と絶縁しても構わない。
　インシュレータ６３の天板部２Ａとは逆側（下方側）の端部６３ｂには、基板８が固定されている。 The coil 62 is wound around the stator core 61. The stator core 61 and the coil 62 are insulated by an insulator 63 formed of an insulator. Instead of the insulator 63, the surface of the stator core 61 may be coated with an insulating film to insulate the coil 62.
The substrate 8 is fixed to the end 63b on the opposite side (lower side) of the insulator 63 from the top plate 2A.
　ケース７は、ハブ２を取り囲む側壁部７１と、側壁部７１の一方（下方）の開口の一部に位置する底壁部７２と、を有している。ケース７は、例えば、樹脂材料や金属材料により成形される。当該ケース７の内部空間には、ロータ３及びステータ６は勿論、その他ハブ２等のモータ１００及び送風装置１０１の構成要素のほとんど（固定されているものは全て）が収容されている。 The case 7 has a side wall portion 71 that surrounds the hub 2 and a bottom wall portion 72 that is located in a part of one (lower) opening of the side wall portion 71. The case 7 is formed of, for example, a resin material or a metal material. In the internal space of the case 7, not only the rotor 3 and the stator 6, but also most of the components (all fixed) of the motor 100 such as the hub 2 and the blower 101 are housed.
　ケース７は、その内面から内部方向に立設する筒状の第１の筒状部（以下、第１の筒状部を「ケース筒状部」と称する。）７３を有している。ケース筒状部７３は、底壁部７２から天板部２Ａ側へ立設しており、金属製の円筒状の形状をしたスリーブ部材をケース７にインサート成形することによって、底壁部７２と一体的に形成されている。ケース７の上方には、円形に開口した吹出口７４が設けられている。なお、ケース筒状部７３を金属製にすることによって、スリーブ５を圧入する際、ケース７の強度を向上させ、より安定して圧入を行うことが可能となるが、金属製に限らず、樹脂やセラミックス等で成形した別部材を一体に形成してもよく、また、ケース７と一体に成形してもよい。その場合、軽量化や工数の低減が可能となる。
　ケース筒状部７３の内部には、スリーブ５の天板部２Ａとは逆側（下方側）の端部が圧入により固定されている。スリーブ５の端部がケース筒状部７３に固定されることで、スリーブ５がケース７に固定されている。 The case 7 has a tubular first tubular portion (hereinafter, the first tubular portion is referred to as a “case tubular portion”) 73 that is erected inward from the inner surface thereof. The case tubular portion 73 is erected from the bottom wall portion 72 to the top plate portion 2A side, and is formed by insert-molding a metal cylindrical sleeve member into the case 7 to form a bottom wall portion 72. It is formed integrally. An air outlet 74 having a circular opening is provided above the case 7. By making the case tubular portion 73 made of metal, when the sleeve 5 is press-fitted, the strength of the case 7 can be improved and the press-fitting can be performed more stably, but the press-fitting is not limited to the metal case. Another member molded from resin, ceramics, or the like may be integrally formed, or may be integrally molded with the case 7. In that case, weight reduction and man-hours can be reduced.
Inside the case tubular portion 73, an end portion of the sleeve 5 on the opposite side (lower side) of the top plate portion 2A is fixed by press fitting. The sleeve 5 is fixed to the case 7 by fixing the end of the sleeve 5 to the case tubular portion 73.
　ケース筒状部７３の外周面において、天板部２Ａ側の端部（上端部）から底壁部７２側方向への一定領域に外径が狭くなるように外周から凹んだ凹部（切り欠かれた切欠部）７３ａが成形されている。
　切欠部７３ａには、インシュレータ６３の端部６３ｂ及び基板８の内周面が位置する。 On the outer peripheral surface of the case tubular portion 73, a recess (notched) recessed from the outer circumference so that the outer diameter becomes narrower in a certain region from the end portion (upper end portion) on the top plate portion 2A side toward the bottom wall portion 72 side. Notch) 73a is molded.
The end portion 63b of the insulator 63 and the inner peripheral surface of the substrate 8 are located in the notch portion 73a.
　底壁部７２には、ケース７の内部の空間と、ケース７の外部の空間と、を連通し、ケース７内に空気を吸い込む不図示の吸気口が設けられている。なお、底壁部７２の吸気口は、ケース７の内部の空間と、ケース７の外部の空間と、を連通する孔であってもよく、メッシュ状等の材料で形成したりすることもできる。 The bottom wall portion 72 is provided with an air intake port (not shown) that connects the space inside the case 7 and the space outside the case 7 and sucks air into the case 7. The intake port of the bottom wall portion 72 may be a hole that communicates the space inside the case 7 and the space outside the case 7, and may be formed of a material such as a mesh. ..
　上記のモータ１００を有する送風装置１０１に不図示の外部電源から所定の電圧が印加されると、基板８を介してコイル６２に制御された電流が供給される。
　そして、ステータ６が生じる磁力と、マグネット３２との間の作用によってインペラ２２が回転軸線Ｘを中心に例えば時計回りに回転する。インペラ２２が回転することにより、底壁部７２の吸気口周辺の空気が吸気口を通ってケース７内に吸い込まれる。そして、上方の吹出口７４から空気が吹き出される。 When a predetermined voltage is applied to the blower 101 having the motor 100 from an external power source (not shown), a controlled current is supplied to the coil 62 via the substrate 8.
Then, the impeller 22 rotates about the rotation axis X, for example, clockwise due to the action between the magnetic force generated by the stator 6 and the magnet 32. As the impeller 22 rotates, the air around the intake port of the bottom wall portion 72 is sucked into the case 7 through the intake port. Then, air is blown out from the upper outlet 74.
　次に、本実施形態のモータ１００及びこれが適用された送風装置１０１の組み立て方法について説明する。図３は、図２に示す送風装置１０１の分解断面図である。図４は、シャフト１をハブ２に固定する操作について説明するための断面図である。図５は、図４に示す状態のものをケース７に固定する操作について説明するための断面図である。 Next, a method of assembling the motor 100 of the present embodiment and the blower 101 to which the motor 100 is applied will be described. FIG. 3 is an exploded cross-sectional view of the blower 101 shown in FIG. FIG. 4 is a cross-sectional view for explaining an operation of fixing the shaft 1 to the hub 2. FIG. 5 is a cross-sectional view for explaining an operation of fixing the state shown in FIG. 4 to the case 7.
　送風装置１０１の組み立ては、はじめに、図３に示すように、スリーブ５の内部に軸受４を固定する。軸受４のスリーブ５への固定は、軸受４１，４２の外輪４１ａ，４２ａを大内径部５４にそれぞれ嵌め込むことにより固定する。
　スリーブ５の内部に軸受４を固定した後、この軸受４にシャフト１を嵌入することにより、スリーブ５の内部にシャフト１を固定してカートリッジ部材Ｃを組み立てる。なお、このカートリッジ部材Ｃを予め別の場所で組み立てておいてもよい。 To assemble the blower 101, first, as shown in FIG. 3, the bearing 4 is fixed inside the sleeve 5. The bearing 4 is fixed to the sleeve 5 by fitting the outer rings 41a and 42a of the bearings 41 and 42 into the large inner diameter portion 54, respectively.
After fixing the bearing 4 inside the sleeve 5, the shaft 1 is fitted into the bearing 4 to fix the shaft 1 inside the sleeve 5 and assemble the cartridge member C. The cartridge member C may be assembled in advance at another location.
　次に、このカートリッジ部材Ｃをステータ６の内部に固定する。
　ステータ６へのカートリッジ部材Ｃの固定は、スリーブ５の外周面５ｃに接着剤を塗布し、ステータコア６１の内部にスリーブ５を矢印Ｄ１方向に挿入することによりなされる。 Next, the cartridge member C is fixed inside the stator 6.
The cartridge member C is fixed to the stator 6 by applying an adhesive to the outer peripheral surface 5c of the sleeve 5 and inserting the sleeve 5 into the stator core 61 in the direction of arrow D1.
　また、ステータ６へのスリーブ５の挿入は、スリーブ５の凸部５２がステータ６のステータコア６１の天板部２Ａ側（上方側）と接触するまで挿入する。このとき、ステータ６はインシュレータ６３を保持し、カートリッジ部材Ｃを挿入する。そして、フランジ部５１を矢印Ｄ１方向に押圧することでスリーブ５の外周にステータ６が固定される。 Further, the sleeve 5 is inserted into the stator 6 until the convex portion 52 of the sleeve 5 comes into contact with the top plate portion 2A side (upper side) of the stator core 61 of the stator 6. At this time, the stator 6 holds the insulator 63 and inserts the cartridge member C. Then, by pressing the flange portion 51 in the direction of the arrow D1, the stator 6 is fixed to the outer circumference of the sleeve 5.
　次に、図４に示すように、シャフト１をハブ２の天板部２Ａに固定する。天板部２Ａへのシャフト１の固定は、シャフト１の上端をシャフト取付部材２３の取付部材筒状部２３ａの内部に矢印Ｄ２方向に圧入することにより行う。このとき、ハブ２側を保持した状態で、シャフト１の下端部を矢印Ｄ２方向に押圧することでカートリッジ部材Ｃを挿入する。なお、天板部２Ａへのシャフト１の固定は、取付部材筒状部２３ａの内部に接着剤を塗布しておき、圧入と接着剤の両方により行っても構わない。また、接着剤による固定のほか、圧入に加え、強度を増すために溶接等による固定を併用してもよい。シャフト１がハブ２の天板部２Ａに固定されると、フランジ部５１の天板部２Ａ側には孔部２０ａが位置する状態になっている。 Next, as shown in FIG. 4, the shaft 1 is fixed to the top plate portion 2A of the hub 2. The shaft 1 is fixed to the top plate portion 2A by press-fitting the upper end of the shaft 1 into the inside of the mounting member tubular portion 23a of the shaft mounting member 23 in the direction of arrow D2. At this time, the cartridge member C is inserted by pressing the lower end portion of the shaft 1 in the direction of the arrow D2 while holding the hub 2 side. The shaft 1 may be fixed to the top plate portion 2A by applying an adhesive to the inside of the mounting member tubular portion 23a and using both press-fitting and the adhesive. Further, in addition to fixing with an adhesive, in addition to press-fitting, fixing by welding or the like may be used in combination to increase the strength. When the shaft 1 is fixed to the top plate portion 2A of the hub 2, the hole portion 20a is located on the top plate portion 2A side of the flange portion 51.
　そして、図５に示すように、スリーブ５における天板部２Ａとは逆側（下方側）の端部をケース筒状部７３の内部に圧入することによりスリーブ５の端部をケース筒状部７３に固定する。
　スリーブ５のケース筒状部７３への圧入は、天板部２Ａの孔部２０ａに上方から下方へ不図示の棒状の治具を挿入し、スリーブ５のフランジ部５１を矢印Ｄ４方向へ押圧することにより行う。ケース筒状部７３へのスリーブ５の固定は、ケース筒状部７３の内部に接着剤を塗布しておき、圧入と接着剤との両方により行っても構わない。また、接着剤による固定のほか、圧入に加え、強度を増すために溶接等による固定を併用してもよい。なお、不図示の治具は、３つの孔部２０ａから棒状体を同時に挿入して、フランジ部５１を同時に押圧できるような３本の棒状体を有する櫛刃状のものである。 Then, as shown in FIG. 5, the end of the sleeve 5 on the opposite side (lower side) of the top plate 2A is press-fitted into the case tubular portion 73, so that the end of the sleeve 5 is pressed into the case tubular portion. It is fixed to 73.
To press-fit the sleeve 5 into the case tubular portion 73, a rod-shaped jig (not shown) is inserted into the hole 20a of the top plate portion 2A from above to below, and the flange portion 51 of the sleeve 5 is pressed in the direction of arrow D4. Do it by. The sleeve 5 may be fixed to the case tubular portion 73 by applying an adhesive to the inside of the case tubular portion 73 and using both press-fitting and the adhesive. Further, in addition to fixing with an adhesive, in addition to press-fitting, fixing by welding or the like may be used in combination to increase the strength. The jig (not shown) is a comb-blade-shaped jig having three rod-shaped bodies capable of simultaneously inserting rod-shaped bodies through the three hole portions 20a and simultaneously pressing the flange portion 51.
　ケース筒状部７３へスリーブ５が押圧されると、インシュレータ６３の端部６３ｂ及び基板８の内周部がケース筒状部７３の切欠部７３ａに位置した状態になる。
　このようにして、本実施形態の送風装置１０１は、シャフト取付部材２３の取付部材筒状部２３ａとシャフト１の上端、及び、ケース筒状部７３とスリーブ５の下方側の端部のいずれもが圧入により固定されている。 When the sleeve 5 is pressed against the case tubular portion 73, the end portion 63b of the insulator 63 and the inner peripheral portion of the substrate 8 are positioned in the cutout portion 73a of the case tubular portion 73.
In this way, the blower 101 of the present embodiment has all of the mounting member tubular portion 23a of the shaft mounting member 23 and the upper end of the shaft 1, and the case tubular portion 73 and the lower end of the sleeve 5. Is fixed by press fitting.
　本実施形態においては、天板部２Ａには、シャフト１の回転軸線Ｘ方向において、スリーブ５の天板部２Ａ側の端部に向けて開口する孔部２０ａが設けられている。このため、孔部２０ａに治具を挿入してスリーブ５を下方側へ押圧することにより、スリーブ５の下方側の端部をケース筒状部７３へ圧入により固定することができる。このように、圧入によりスリーブ５の下方側の端部を固定することができるため、スリーブ５とケース筒状部７３との隙間が生じにくくなりシャフト１の垂直度を高めることができる。即ち、圧入によらない接着等の固定方法では、製品のばらつきや、加工条件、組立条件等による影響でシャフト１に傾きが生じてしまう懸念がある。しかし、本実施形態では圧入による固定のため、垂直度を高めることが容易である。 In the present embodiment, the top plate portion 2A is provided with a hole portion 20a that opens toward the end portion of the sleeve 5 on the top plate portion 2A side in the rotation axis X direction of the shaft 1. Therefore, by inserting a jig into the hole 20a and pressing the sleeve 5 downward, the lower end of the sleeve 5 can be press-fitted into the case tubular portion 73 to be fixed. In this way, since the lower end portion of the sleeve 5 can be fixed by press fitting, a gap between the sleeve 5 and the case tubular portion 73 is less likely to occur, and the verticality of the shaft 1 can be increased. That is, in the fixing method such as adhesion without press fitting, there is a concern that the shaft 1 may be tilted due to the influence of product variation, processing conditions, assembly conditions, and the like. However, in the present embodiment, since it is fixed by press fitting, it is easy to increase the verticality.
　また、本実施形態においては、スリーブ５が、天板部２Ａ側の端部に、シャフト１の回転軸線Ｘ方向に対して垂直方向に広がるフランジ部５１を有し、孔部２０ａが、シャフトの回転軸線Ｘ方向において、フランジ部５１に向けて開口している。このため、孔部２０ａに治具を挿入し、スリーブ５を下方側へ押圧する際、フランジ部５１に治具を突き当ててスリーブ５を下方側へ押圧することによりスリーブ５をケース筒状部７３へ容易に圧入することができる。 Further, in the present embodiment, the sleeve 5 has a flange portion 51 extending in the direction perpendicular to the rotation axis X direction of the shaft 1 at the end portion on the top plate portion 2A side, and the hole portion 20a is the shaft. It opens toward the flange portion 51 in the X direction of the rotation axis. Therefore, when the jig is inserted into the hole 20a and the sleeve 5 is pressed downward, the jig is abutted against the flange 51 and the sleeve 5 is pressed downward to push the sleeve 5 downward. It can be easily press-fitted into 73.
　さらに、本実施形態においては、スリーブ５が、ステータ６の天板部２Ａ側で、シャフト１の回転軸線Ｘ方向に対して垂直方向に張り出して、ステータ６と接触する凸部５２を有する。このため、コイル６２の天板部２Ａ側（上方側）が凸部５２と接触するまでステータ６を挿入することによりスリーブ５に対してステータ６を位置決めすることができる。 Further, in the present embodiment, the sleeve 5 has a convex portion 52 on the top plate portion 2A side of the stator 6 that projects in a direction perpendicular to the rotation axis X direction of the shaft 1 and comes into contact with the stator 6. Therefore, the stator 6 can be positioned with respect to the sleeve 5 by inserting the stator 6 until the top plate portion 2A side (upper side) of the coil 62 comes into contact with the convex portion 52.
　また、本実施形態においては、スリーブ５、第一軸受４１及び第二軸受４２で、１つのカートリッジ部材Ｃを構成している。このため、製造する際の組み立て作業が容易になる。また、例えば、軸受４が破損した場合には、カートリッジ部材Ｃごと交換すればよいので、交換作業が容易であり、容易な作業で修理をすることができ、低コスト化にも繋がる。 Further, in the present embodiment, the sleeve 5, the first bearing 41, and the second bearing 42 constitute one cartridge member C. Therefore, the assembly work at the time of manufacturing becomes easy. Further, for example, when the bearing 4 is damaged, the cartridge member C may be replaced together with the cartridge member C, so that the replacement work is easy, the repair can be performed easily, and the cost can be reduced.
　さらに、本実施形態においては、ケース７の内面には、内部方向に立設する第１の筒状部（ケース筒状部７３）を有し、ケース筒状部７３に、スリーブ５の天板部２Ａとは逆側の端部が嵌入して固定されることで、スリーブ５がケース７に固定されている。そして、スリーブ５をケース筒状部７３に固定する際、孔部２０ａに治具を挿入し、スリーブ５を下方側へ押圧することにより、スリーブ５をケース筒状部７３に容易に圧入することができ、スリーブ５をケース筒状部７３にしっかりと固定することができる。 Further, in the present embodiment, the inner surface of the case 7 has a first tubular portion (case tubular portion 73) that stands upright in the internal direction, and the case tubular portion 73 has a top plate of the sleeve 5. The sleeve 5 is fixed to the case 7 by fitting and fixing the end portion on the opposite side to the portion 2A. Then, when fixing the sleeve 5 to the case tubular portion 73, the sleeve 5 is easily press-fitted into the case tubular portion 73 by inserting a jig into the hole portion 20a and pressing the sleeve 5 downward. The sleeve 5 can be firmly fixed to the case tubular portion 73.
　本実施形態においては、天板部２Ａの中心には、スリーブ５側に立設する第２の筒状部（取付部材筒状部２３ａ）を有し、取付部材筒状部２３ａに、シャフト１の一端が嵌入して固定されることで、天板部２Ａがシャフト１に固定されている。このため、天板部２Ａがシャフト１に固定された状態にもかかわらず、孔部２０ａに治具を挿入してスリーブ５を下方側へ押圧することにより、スリーブ５をケース筒状部７３に固定することができる。 In the present embodiment, a second tubular portion (mounting member tubular portion 23a) erected on the sleeve 5 side is provided at the center of the top plate portion 2A, and the shaft 1 is attached to the mounting member tubular portion 23a. The top plate portion 2A is fixed to the shaft 1 by fitting and fixing one end of the top plate portion 2A. Therefore, even though the top plate portion 2A is fixed to the shaft 1, a jig is inserted into the hole portion 20a and the sleeve 5 is pressed downward to push the sleeve 5 onto the case tubular portion 73. Can be fixed.
　また、本実施形態においては、第１の筒状部（ケース筒状部７３）とスリーブ５の天板部２Ａとは逆側の端部、及び、第２の筒状部（シャフト取付部材２３）とシャフトの一端（上端）の双方が圧入による固定である。このため、モータ１００を組み立てる際、双方を接着剤により固定する場合と比較して取付作業が容易になる。また、圧入による固定であるため、ケース筒状部７３とスリーブ５、シャフト取付部材２３とシャフト１、の間に隙間が生じにくく、シャフト１の垂直度を高めることができる。 Further, in the present embodiment, the first tubular portion (case tubular portion 73), the end portion of the sleeve 5 opposite to the top plate portion 2A, and the second tubular portion (shaft mounting member 23). ) And one end (upper end) of the shaft are fixed by press fitting. Therefore, when assembling the motor 100, the mounting work becomes easier as compared with the case where both are fixed by an adhesive. Further, since it is fixed by press fitting, a gap is unlikely to occur between the case tubular portion 73 and the sleeve 5, and the shaft mounting member 23 and the shaft 1, and the verticality of the shaft 1 can be increased.
　以上、本発明のモータ及び送風装置について、好ましい実施形態を挙げて説明したが、本発明のモータは、上記実施形態の構成に限定されるものではない。例えば、上記実施形態のモータ１００及び送風装置１０１においては、スリーブ５は、フランジ部５１を有する場合について説明したが、フランジ部５１がない構成であってもよい。フランジ部５１がない場合、孔部２０ａをスリーブ５の上端部に向けて開口するように構成し、孔部２０ａに治具を挿入してスリーブ５の上端部に接触させて押圧することにより、スリーブ５をケース筒状部７３へ圧入することができる。 Although the motor and the blower of the present invention have been described above with reference to preferred embodiments, the motor of the present invention is not limited to the configuration of the above embodiment. For example, in the motor 100 and the blower 101 of the above embodiment, the case where the sleeve 5 has the flange portion 51 has been described, but the sleeve 5 may have a configuration without the flange portion 51. When there is no flange portion 51, the hole portion 20a is configured to open toward the upper end portion of the sleeve 5, and a jig is inserted into the hole portion 20a to bring it into contact with the upper end portion of the sleeve 5 and press it. The sleeve 5 can be press-fitted into the case tubular portion 73.
　また、上記実施形態では、天板部２Ａには、スリーブ５のフランジ部５１に向けて開口する孔部２０ａ、円錐台部２Ｃには、送風装置１０１の外部の空間とハブ２の内部の空間とを連通する孔部２０ｃ、がそれぞれ設けられている場合について説明したが、例えば孔部２０ａのみを設け、孔部２０ｃのない構成であってもよい。即ち、孔部２０ａに、治具を挿入する機能と、空気流を生じさせる機能と、の両方の機能を併せ持つようにしてもよい。 Further, in the above embodiment, the top plate portion 2A has a hole portion 20a that opens toward the flange portion 51 of the sleeve 5, and the truncated cone portion 2C has a space outside the blower 101 and a space inside the hub 2. Although the case where the holes 20c, which communicate with the above, are provided, for example, only the holes 20a may be provided and the holes 20c may not be provided. That is, the hole 20a may have both a function of inserting a jig and a function of generating an air flow.
　さらに、天板部２Ａは、孔部２０ａのない構成であってもよい。図５の状態から説明すると、シャフト１の上端を取付部材筒状部２３ａへ圧入して固定した後、例えば、ケース７の底壁部７２の開口（吸気口）から、先端に鉤部を有する治具を挿入し、鉤部をスリーブ５のフランジ部５１に引っ掛けてハブ２を下方へ引っ張り下げることにより、スリーブ５の下方側をケース筒状部７３に圧入することができる。この方法によっても、シャフト取付部材２３の取付部材筒状部２３ａとシャフト１の上端、及び、ケース筒状部７３とスリーブ５の下方側の端部のいずれも圧入することができる。 Further, the top plate portion 2A may have a configuration without the hole portion 20a. Explaining from the state of FIG. 5, after the upper end of the shaft 1 is press-fitted into the mounting member tubular portion 23a and fixed, for example, a hook portion is provided at the tip from the opening (intake port) of the bottom wall portion 72 of the case 7. By inserting a jig, hooking the hook portion on the flange portion 51 of the sleeve 5, and pulling the hub 2 downward, the lower side of the sleeve 5 can be press-fitted into the case tubular portion 73. Also by this method, any of the mounting member tubular portion 23a of the shaft mounting member 23 and the upper end of the shaft 1 and the case tubular portion 73 and the lower end of the sleeve 5 can be press-fitted.
　さらに、上記実施形態では、天板部２Ａは、カップ部２１とヨーク３１とを含む構成である場合について説明したが、ヨーク３１がカップ状ではなく筒状であり、天板部２Ａがカップ部２１のみで構成されていても構わない。また、カップ部２１がカップ形状ではなく筒状であり、カップ状のヨーク３１のみで天板部２Ａが構成されていても構わない。 Further, in the above embodiment, the case where the top plate portion 2A includes the cup portion 21 and the yoke 31 has been described, but the yoke 31 is not a cup shape but a tubular shape, and the top plate portion 2A is a cup portion. It may be composed of only 21. Further, the cup portion 21 may have a tubular shape instead of a cup shape, and the top plate portion 2A may be formed only by the cup-shaped yoke 31.
　その他、当業者は、従来公知の知見に従い、本発明のモータを適宜改変することができる。かかる改変によってもなお本発明の構成を具備する限り、勿論、本発明の範疇に含まれるものである。 In addition, those skilled in the art can appropriately modify the motor of the present invention according to conventionally known knowledge. As long as the modification still has the constitution of the present invention, it is, of course, included in the category of the present invention.
１…シャフト、２…ハブ、２Ａ…天板部、２Ｂ…円筒部、２Ｃ…円錐台部、２ｂ…底部、３…ロータ、４…軸受、５…スリーブ、５ｃ…外周面、５ｄ…内周面、６…ステータ、７…ケース、８…基板、２０ａ…孔部、２０ｂ…溶着部、２０ｃ…孔部、２１…カップ部、２１ａ…凹部、２２…インペラ、２３…シャフト取付部材、２３ａ…取付部材筒状部、２３ｂ…環状部、２３ｃ…環状部、３０ａ…孔部、３１…ヨーク、３１ａ…円形開口部、３１ｄ…内壁部、３２…マグネット、４１…軸受、４１…第一軸受、４１ａ…外輪、４１ｂ…内輪、４１ｃ…ボール、４２…軸受、４２…第二軸受、４２ａ…外輪、４２ｂ…内輪、４２ｃ…ボール、５１…フランジ部、５２…凸部、５３…小内径部、５４…大内径部、６１…ステータコア、６２…コイル、６３…インシュレータ、６３ｂ…端部、７１…側壁部、７２…底壁部、７３…ケース筒状部、７３ａ…切欠部、７４…吹出口、１００…モータ、１０１…送風装置 1 ... Shaft, 2 ... Hub, 2A ... Top plate part, 2B ... Cylindrical part, 2C ... Conical base part, 2b ... Bottom part, 3 ... Rotor, 4 ... Bearing, 5 ... Sleeve, 5c ... Outer surface, 5d ... Inner circumference Surface, 6 ... stator, 7 ... case, 8 ... substrate, 20a ... hole, 20b ... welding, 20c ... hole, 21 ... cup, 21a ... recess, 22 ... impeller, 23 ... shaft mounting member, 23a ... Mounting member Cylindrical portion, 23b ... annular portion, 23c ... annular portion, 30a ... hole portion, 31 ... yoke, 31a ... circular opening, 31d ... inner wall portion, 32 ... magnet, 41 ... bearing, 41 ... first bearing, 41a ... outer ring, 41b ... inner ring, 41c ... ball, 42 ... bearing, 42 ... second bearing, 42a ... outer ring, 42b ... inner ring, 42c ... ball, 51 ... flange part, 52 ... convex part, 53 ... small inner diameter part, 54 ... Large inner diameter part, 61 ... Stator core, 62 ... Coil, 63 ... Insulator, 63b ... End part, 71 ... Side wall part, 72 ... Bottom wall part, 73 ... Case tubular part, 73a ... Notch part, 74 ... Air outlet , 100 ... Motor, 101 ... Blower

Claims (10)

  1. 　シャフトと、
    　前記シャフトの一端に固定され、前記シャフトの軸方向に対して垂直方向に広がる天板部と、
    　前記シャフトに固定された軸受と、
    　前記軸受を収容する筒状のスリーブと、
    　前記スリーブの外周部に固定されるステータと、
    　前記ステータを取り囲むロータと、
    を備え、
    　前記天板部と前記ロータとが固定されており、
    　前記天板部には、前記シャフトの軸方向において、前記スリーブの前記天板部側の端部に向けて開口する孔部が設けられている、モータ。     With the shaft
    A top plate portion fixed to one end of the shaft and extending in a direction perpendicular to the axial direction of the shaft,
    The bearing fixed to the shaft and
    A tubular sleeve that houses the bearing and
    A stator fixed to the outer peripheral portion of the sleeve and
    The rotor surrounding the stator and
    With
    The top plate portion and the rotor are fixed to each other.
    A motor provided with a hole in the top plate that opens toward the end of the sleeve on the top plate side in the axial direction of the shaft.
  2. 　前記天板部と前記ロータとが一体化してハブを構成している、請求項１に記載のモータ。 The motor according to claim 1, wherein the top plate portion and the rotor are integrated to form a hub.
  3. 　前記スリーブが、前記天板部側の端部に、前記シャフトの軸方向に対して垂直方向に広がるフランジ部を有し、
    　前記孔部が、前記シャフトの軸方向において、前記フランジ部に向けて開口している、請求項１または２に記載のモータ。     The sleeve has a flange portion extending in a direction perpendicular to the axial direction of the shaft at an end portion on the top plate portion side.
    The motor according to claim 1 or 2, wherein the hole portion opens toward the flange portion in the axial direction of the shaft.
  4. 　前記スリーブが、前記ステータの前記天板部側で、前記シャフトの軸方向に対して垂直方向に張り出して、前記ステータと係合する凸部を有する、請求項１から３のいずれか１項に記載のモータ。 According to any one of claims 1 to 3, the sleeve has a convex portion on the top plate side of the stator that projects in a direction perpendicular to the axial direction of the shaft and engages with the stator. The described motor.
  5. 　前記軸受は、少なくとも、前記シャフトにおける、前記天板部が固定された一端側寄りに位置する第一軸受と、前記一端側とは反対側の他端側寄りに位置する第二軸受と、を有し、
    　少なくとも、前記スリーブ、前記第一軸受及び前記第二軸受で、１つのカートリッジ部材を構成している、請求項１から４のいずれか１項に記載のモータ。     The bearing includes at least a first bearing of the shaft located closer to one end to which the top plate is fixed and a second bearing located closer to the other end of the shaft opposite to the one end side. Have and
    The motor according to any one of claims 1 to 4, wherein at least the sleeve, the first bearing, and the second bearing constitute one cartridge member.
  6. 　他の構成部材の全部または一部を内部に収容するケースを備え、
    　前記ケースの内面には、内部方向に立設する第１の筒状部を有し、
    　前記第１の筒状部に、前記スリーブの前記天板部とは逆側の端部が嵌入して固定されることで、前記スリーブが前記ケースに固定されている、請求項１から５のいずれか１項に記載のモータ。     It has a case that houses all or part of other components inside.
    The inner surface of the case has a first tubular portion that stands upright in the internal direction.
    Claims 1 to 5, wherein the sleeve is fixed to the case by fitting and fixing the end portion of the sleeve opposite to the top plate portion to the first tubular portion. The motor according to any one item.
  7. 　前記天板部の中心には、前記スリーブ側に立設する第２の筒状部を有し、
    　前記第２の筒状部に、前記シャフトの一端が嵌入して固定されることで、前記天板部が前記シャフトに固定されている、請求項１から６のいずれか１項に記載のモータ。     At the center of the top plate portion, there is a second tubular portion that stands on the sleeve side.
    The motor according to any one of claims 1 to 6, wherein the top plate portion is fixed to the shaft by fitting and fixing one end of the shaft to the second tubular portion. ..
  8. 　前記天板部の中心には、前記スリーブ側に立設する第２の筒状部を有し、
    　前記第２の筒状部に、前記シャフトの一端が嵌入して固定されることで、前記天板部が前記シャフトに固定されており、
    　前記第１の筒状部と、前記スリーブの前記天板部とは逆側の端部、及び、前記第２の筒状部と、前記シャフトの一端、のいずれか一方もしくは双方が、圧入もしくは圧入を含む固定方法による固定である、請求項６に記載のモータ。     At the center of the top plate portion, there is a second tubular portion that stands on the sleeve side.
    The top plate portion is fixed to the shaft by fitting and fixing one end of the shaft to the second tubular portion.
    Either or both of the first tubular portion, the end portion of the sleeve opposite to the top plate portion, and the second tubular portion and one end of the shaft are press-fitted or The motor according to claim 6, which is fixed by a fixing method including press fitting.
  9. 　シャフトと、
    　前記シャフトの一端に固定され、前記シャフトの軸方向に対して垂直方向に広がる天板部と、
    　前記シャフトに固定された軸受と、
    　前記軸受を収容する筒状のスリーブと、
    　前記スリーブの外周に固定されるステータと、
    　前記ステータを取り囲むロータと、
    　他の構成部材の全部または一部を内部に収容するケースと、
    を備え、
    　前記天板部と前記ロータとが固定されており、
    　前記ケースの内面には、内部方向に立設する第１の筒状部を有し、
    　前記天板部の中心には、前記スリーブ側に立設する第２の筒状部を有し、
    　前記第１の筒状部と、前記スリーブの前記天板部とは逆側の端部、及び、前記第２の筒状部と、前記シャフトの一端、がいずれも圧入もしくは圧入を含む固定方法により固定されている、モータ。     With the shaft
    A top plate portion fixed to one end of the shaft and extending in a direction perpendicular to the axial direction of the shaft,
    The bearing fixed to the shaft and
    A tubular sleeve that houses the bearing and
    A stator fixed to the outer circumference of the sleeve,
    The rotor surrounding the stator and
    A case that houses all or part of other components inside,
    With
    The top plate portion and the rotor are fixed to each other.
    The inner surface of the case has a first tubular portion that stands upright in the internal direction.
    At the center of the top plate portion, there is a second tubular portion that stands on the sleeve side.
    A fixing method in which the first tubular portion, the end portion of the sleeve opposite to the top plate portion, and the second tubular portion and one end of the shaft are all press-fitted or press-fitted. Fixed by the motor.
  10. 　請求項１から９のいずれか１項に記載のモータと
    　前記天板部に固定されたインペラと、
    を有する、送風装置。     The motor according to any one of claims 1 to 9, an impeller fixed to the top plate portion, and the like.
    Has a blower.
PCT/JP2021/002998 2020-01-28 2021-01-28 Motor and blower device WO2021153661A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001317547A (en) * 2000-05-10 2001-11-16 Sankyo Seiki Mfg Co Ltd Fluid bearing device
JP2014234841A (en) * 2013-05-31 2014-12-15 サムスン電機ジャパンアドバンスドテクノロジー株式会社 Rotary device
JP2019033614A (en) * 2017-08-09 2019-02-28 日本電産株式会社 Motor and air blower

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001317547A (en) * 2000-05-10 2001-11-16 Sankyo Seiki Mfg Co Ltd Fluid bearing device
JP2014234841A (en) * 2013-05-31 2014-12-15 サムスン電機ジャパンアドバンスドテクノロジー株式会社 Rotary device
JP2019033614A (en) * 2017-08-09 2019-02-28 日本電産株式会社 Motor and air blower

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