CN203166659U - Motor - Google Patents
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- Publication number
- CN203166659U CN203166659U CN2011900006258U CN201190000625U CN203166659U CN 203166659 U CN203166659 U CN 203166659U CN 2011900006258 U CN2011900006258 U CN 2011900006258U CN 201190000625 U CN201190000625 U CN 201190000625U CN 203166659 U CN203166659 U CN 203166659U
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- CN
- China
- Prior art keywords
- circuit board
- stator
- rotor
- motor
- carriage
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/50—Structural details of electrical machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
Abstract
The utility model discloses a motor which comprises a bracket. The bracket comprises a circumferential wall portion and an end wall portion, wherein the circumferential wall portion and the end wall portion are designed to accommodate a rotor, a stator and the like. A shaft support portion is arranged on the inner side of the end wall portion, thus a shaft is rotatably supported through a first bearing and a second bearing. The second bearing has an outer diameter smaller than that of the first bearing. The shaft support portion has a smaller outer diameter at the top portion than at the base portion thereof. A circuit board which is provided with a switching element is accommodated in the bracket. The bracket comprises a flat portion defined therein. The switching element is arranged on a predetermined portion of the periphery portion of the circuit board, wherein the predetermined portion is located on the radial outer side of the rotor and is opposite to the flat portion. The switching element is designed to be in contact with the flat portion through an insulating heat transmitting member.
Description
Technical field
The utility model relates to a kind of brushless motor of outer-rotor type.Particularly, the utility model relates to for example miniature motor with water proofing property requirement of vehicle mounted fan motor and so on.
Background technology
In recent years, the automobile of electricity as power source received much concern such as electric automobile (EV) and hybrid vehicle (HEV).Different with the automobile that uses traditional fuel, these electric automobiles etc. need be equipped with high capacity cell.Consequently, restricted the space that is used for installing other electric equipments such as air-conditioning equipment.For example, the situation that has the vehicle bottom that may suffer moisture and dust invasion and attack of having to other electric equipments such as air-conditioning equipment are installed in.
, increase day by day for the demand as the fan motor of exemplary air-conditioning equipment etc. for this reason, realizing miniaturization, improve water resistance and to improve anti-dust performance, and attempted various researchs ( patent documentation 1,2 and 3) up to now.
For example, patent documentation 1 discloses the flat brushless motor of the outer-rotor type that a kind of axial width reduces, and in this motor, the cup-shaped carriage is installed to the dish type pedestal integratedly.Rotor wherein also is arranged to flat according to the shape of motor, the electronic component such as capacitor is set in the space that the radial outside of rotor limits.
In patent documentation 3 disclosed motors, have high height and be installed in electronic component (such as capacitor) on the circuit board and be arranged near the space the radially Ce in the carriage and be limited in the space in the rotor radial outside, and transistor is arranged in the small space between these two spaces.
The citing document tabulation
Patent documentation
Patent documentation 1:JP-A2010-98815
Patent documentation 2:JP-A2010-98816
Patent documentation 3:JP-A2010-98817
The utility model content
Technical problem
Therefore disclosed motor all is arranged to flatly in above-mentioned these patent documentations, and rotor wherein also is arranged to flat and radial development.But the increase of root diameter causes also increasing along the diameter of the annular magnet of the side face setting of rotor.This is disadvantageous, because the cumulative volume of magnet correspondingly increases.Specifically, have in use under the situation of neodymium magnet as magnet of big magnetic force, because the neodymium magnet is more expensive than permanent magnet, so material cost significantly increases.
In addition, because the radial dimension of circuit board also increases and this circuit board thereby the easier bending that becomes, therefore might cause reducing and the defective of the influence vibrated easily such as installation accuracy.
Therefore, propose the utility model a kind of like this motor is provided, this motor can realize that overall dimension reduces, that is, axial dimension and radial dimension all reduce.
The technical scheme of technical solution problem
Principal character of the present utility model is a kind of for the originality structure that stator and circuit board are installed.
Concrete is, comprises according to the motor of first aspect of the present utility model: axle, and described axle is arranged to rotate around rotation; Rotor, described rotor are fixed on the end of described axle; Stator, described stator are arranged in the described rotor; Carriage, described carriage is arranged to hold described axle, described rotor and described stator, and comprise surrounding wall portion and end wall, described surrounding wall portion is arranged to around the periphery of described axle, described rotor and described stator, and described end wall is arranged to seal an end of described surrounding wall portion; And substrate plate, described substrate plate is installed to described carriage, and is arranged to seal the end opposite of described surrounding wall portion.
Be provided with the shaft supporting part of tubular in the inboard of described end wall, described shaft supporting part extends along the direction of described substrate plate.Described shaft supporting part is arranged to be supported for described axle rotatable by pair of bearings.Described pair of bearings is made of the clutch shaft bearing on the base portion that is arranged on described shaft supporting part and second bearing that is arranged on the top of described shaft supporting part.The diameter of described second bearing is less than the diameter of described clutch shaft bearing.Described shaft supporting part is arranged in the external diameter at described top than little at the external diameter of described base portion.Described motor also comprises circuit board, and described circuit board comprises in the central the peristome of regulation in the part, and at this circuit board electronic unit is installed.Described electronic unit comprises switching device.Described circuit board is contained in the described carriage under situation about described shaft supporting part being inserted in the described peristome.The inner surface of described surrounding wall portion comprises the par, and described par is arranged to extend along the circumferential direction perpendicular to described rotation substantially, and described flat part is in than the more close described end wall of the end opposite of described surrounding wall portion.Described switching device is arranged on the predetermined portions of circumference of described circuit board, and described predetermined portions is positioned at the radially outer of described rotor, and opposed with described par.Described switching device is being arranged to by under the heat transfer component of insulation and the situation that described par contacts described circuit board is fixed to described carriage.
According to second aspect, in the motor of first aspect, described switching device is transistor, and described transistor comprises: heat unit, described heat unit are arranged on the surface of the more close described par of being positioned at of described circuit board one side; And transistor body, described transistor body is arranged on the surface that is positioned at opposition side of described circuit board, and is integrally connected to described heat unit by heat transfer path.
According to the third aspect, in the motor of second aspect, described electronic unit comprises capacitor, and described capacitor is arranged in the space between described par and the described end wall.
According to fourth aspect, first to the third aspect in the motor of either side, described circuit board comprises recess, these recesses are limited to a plurality of different parts place in the periphery of described peristome, and it is radially outward recessed, described stator comprises: a plurality of disengaging-proof portions, these disengaging-proof portions include arm and hook portion, described arm is arranged to extend and can deflection deformation along axis direction, described hook portion be arranged on the top of described arm and can with described recess in a corresponding recess engage; And restriction portion, described restriction portion is arranged to temporary fixed described circuit board, make by described circuit board being placed between described restriction portion and the described a plurality of disengaging-proof portion, and described circuit board can be slided along described axial direction, and described stator is fixed to described shaft supporting part.
According to the 5th aspect, in the motor of fourth aspect, described circuit board comprises splicing ear, and the lead of drawing from described stator is connected to described splicing ear, and described splicing ear comprises: connecting portion, and described lead fixed is to described connecting portion; Elastic portion, described elastic portion be arranged to described connecting portion continuously and can be along described axis direction strain; And basal part, described basal part be arranged to described elastic portion continuously and be connected to described circuit board.
In this motor, the diameter of second bearing that is arranged on the top of shaft supporting part is arranged to littler than the diameter of the clutch shaft bearing of the base portion that is arranged on shaft supporting part, and the external diameter at the top that is provided with rotor and stator of shaft supporting part is arranged to littler than the external diameter of the base portion of shaft supporting part.This makes to have under the situation of identical motor performance, can realize the reducing of size radially of rotor and stator, and realizes extra the reducing of the axial dimension of motor.
The beneficial effects of the utility model
As mentioned above, the utility model can be realized the reducing of overall dimensions of motor, and can realize also that therefore the cost of materials such as magnet reduces.
Description of drawings
Fig. 1 is the schematic perspective view according to the fan motor of preferred implementation of the present utility model.
Fig. 2 is the schematic plan of fan motor.
Fig. 3 is that the line A-A along Fig. 2 cuts open the cutaway view of getting.
Fig. 4 is the schematic perspective view according to the substrate plate of preferred implementation of the present utility model.
Fig. 5 is the schematic plan according to the stator of preferred implementation of the present utility model.
Fig. 6 is that the line B-B along Fig. 5 cuts open the cutaway view of getting.
Fig. 7 is the schematic perspective view of the major part of stator.
Fig. 8 is the schematic plan according to the circuit board of preferred implementation of the present utility model.
Fig. 9 is the schematic cross sectional views of the major part of fan motor.
Figure 10 is that the line C-C along Fig. 2 cuts open the cutaway view of getting.
Figure 11 is the schematic perspective view according to the splicing ear of preferred implementation of the present utility model.
Figure 12 is the schematic cross sectional views of the part of splicing ear and circuit board.
Figure 13 is the figure according to the number of assembling steps of the motor of preferred implementation of the present utility model.
Figure 14 is for the figure of explanation according to the number of assembling steps of the motor of preferred implementation of the present utility model.
Figure 15 is the schematic perspective view according to the carriage of the variation of preferred implementation of the present utility model.
Figure 16 is the schematic cross sectional views according to the fan motor of the variation of preferred implementation of the present utility model.
Figure 17 is the schematic plan according to the fan motor of the variation of preferred implementation of the present utility model.
Figure 18 is the cutaway view that cuts open a part of getting fan motor along the line D-D of Figure 17.
Figure 19 is the cutaway view that cuts open the part of the fan motor of getting along the line E-E of Figure 17.
Embodiment
Motor according to preferred implementation of the present utility model for example can have the motor of water resistance as being installed in the vehicle and requiring, and is specially adapted to EV and HEV etc.Therefore, with hereinafter, describe this motor that is designed to cool off the fan that is installed in the battery in the automobile that is applicable to according to preferred implementation of the present utility model with reference to the accompanying drawings in detail.But, it should be noted that the following description only is to basic explanation of the present utility model, should not be interpreted as limiting scope of the present utility model, application or purpose.
Fig. 1 shows motor 1.With reference to Fig. 3, axle 10 top is arranged to from the top of motor 1 outstanding, comprises the fan 2(multi blade fan of the blade of a plurality of radial configuration) be connected the periphery at the top of axle 10.Fan 2 is arranged to rotate around rotation A.Because the air that is blowed by fan 2 may comprise moisture or dust, so the part of facing fan 2 at least in this motor 1 is arranged to have water resistance and anti-dust performance.
With reference to Fig. 2 and Fig. 3, this motor 1 is the brushless motor of outer-rotor type, and comprises axle 10, rotor 20, stator 30, circuit board 40, carriage 50, substrate plate 60 etc.Hereinafter, for the convenience that illustrates, a side that is provided with fan 2 is called upside, the direction of rotation A being extended the place is called axially, the direction vertical with rotation A cardinal principle is called radially, and will be called circumferentially around the direction of rotation A.Notice that the part of substrate plate is not shown in the part accompanying drawing.
According to the carriage 50 of this preferred implementation for by being the punching press product that cup-like shape forms with steel formability.Carriage 50 comprises: surrounding wall portion 51, and this surrounding wall portion is the two-part drum; End wall 52, this end wall are arranged to seal the path opening of surrounding wall portion 51; Flange part 53, this flange part are arranged to extend radially outwardly from the periphery of the big footpath opening of surrounding wall portion 51.In more detail, surrounding wall portion 51 comprises the first surrounding wall portion 51a, the 51b of shouldered wall portion and the second surrounding wall portion 51c.The first surrounding wall portion 51a is tubular and continuous with end wall 52.The 51b of shouldered wall portion is by limiting with the continuous par of the first surrounding wall portion 51a, and extends radially outwardly from the first surrounding wall portion 51a.The second surrounding wall portion 51c is tubular and continuous with the 51b of shouldered wall portion, and the diameter of this second surrounding wall portion 51c is bigger than the diameter of the first surrounding wall portion 51a.Flange part 53 is arranged to the second surrounding wall portion 51c continuous.
In the part of surrounding wall portion 51, be limited with the portion of heaving 54 at a circumferential position place.This is heaved portion 54 and is arranged in the 51b of shouldered wall portion upward extends to the second surrounding wall portion 51c from the edge of end wall 52 edge.In the middle body of end wall 52, be limited with through hole 56.It is outstanding that through hole 56 is arranged to pass in the top of axle 10.Three positions around the part of through hole 56 in end wall 52 are limited with three first fastener holes 57.Four different positions in the 51b of shouldered wall portion are limited with four second fastener holes 58.Four diverse location places in flange part 53 are limited with four the 3rd fastener holes 59.The 51b of shouldered wall portion is limited with cylindrical portion around each second fastener hole 58 and the part that limits described each second fastener hole 58, and this cylindrical portion is arranged to inwardly outstanding.
With reference to Fig. 4, the dish type injection mo(u)lding product of substrate plate 60 for being formed from a resin.Three diverse location places in the edge of substrate plate 60 are limited with three people's connecting portions 61.These connecting portions 61 are used for by screw motor 1 being connected to air-conditioning equipment etc.In the surface of substrate plate 60, limit bottom surface sections 62.Bottom surface sections 62 is recessed, and has the diameter bigger than the diameter of flange part 53.Four diverse location places in the peripheral part of bottom surface sections 62 are limited with four the 3rd screwed holes 63.Screw passes through each the 3rd screwed hole 63 from fastener hole of correspondence of the 3rd fastener hole 59 of the rear side insertion flange part 53 of bottom surface sections 62.
The partition wall 64 that extends along circumferential direction is arranged to be positioned at the predetermined locations on the bottom surface sections 62, contacts with rotor 20 from the lead-in wire 48a that circuit board 40 is drawn preventing.Liner 65 is connected to the outer peripheral portion (comprising the 3rd screwed hole 63) of bottom surface sections 62.Liner 65 is resilient annular seal parts.Four O shapes ring 66 is connected to the rear surface of substrate plate 60 at the position that is limited with the 3rd screwed hole 63.Each O shape ring all is circlet shape elastomeric elements.
The flange part 53 of carriage 50 is installed on the bottom surface sections 62, and utilizes screw, liner 65 and O shape ring 66 to be fastened to bottom surface sections, thereby substrate plate 60 is assembled into one with carriage 50.Liner 65 grades help anti-sealing or dust to enter by any gap between carriage 50 and the substrate plate 60 together, and help to reduce vibration from carriage 50 basad plates 60 transmission.Form as mentioned above and substantially by the space of liquid-tight seal in hold the motor body that comprises axle 10, rotor 20 etc.
The shaft supporting part 70 of tubular is fixed to the inboard of end wall 52, and is arranged to extend from end wall along the direction of substrate plate 60.The axis hole that extends through shaft supporting part 70 be limited to shaft supporting part 70 in the heart.Described axis hole and through hole 56 are arranged in axial direction aligned with each other.Shaft supporting part 70 is the foundry goods of metal, and comprises the large-diameter portion 70a that is arranged on base end side and the minor diameter part 70b that is arranged on tip side.The external diameter of minor diameter part 70b is littler than the external diameter of large-diameter portion 70a.In large-diameter portion 70a, be limited with three first screwed holes 71.First screwed hole 71 uses for screw first fastener hole 57 that inserts end wall 52 from base end side.First screwed hole 71 arranges with regular substantially interval along circumferential direction.In addition, four diverse locations in minor diameter part 70b are limited with four the 4th screwed holes 72.The 4th screwed hole 72 uses for the screw that inserts from top side, so that stator 30 is fastened to shaft supporting part 70.The 4th screwed hole 72 arranges with interval substantially along circumferential direction.
In the base portion of shaft supporting part 70 and top, be limited with the clutch shaft bearing hole that embeds for clutch shaft bearing 81 and second dead eye that embeds for second bearing 82 respectively.Adapt with the shape of shaft supporting part 70, second bearing 82 has than the abundant little diameter of the diameter of clutch shaft bearing 81.Clutch shaft bearing 81 bearing for having water resistance, and be force-fitted in the clutch shaft bearing hole and fixing in this clutch shaft bearing.On the other hand, second bearing 82 slidably inserts in second dead eye by wave washer 83.
The base portion that contacts with clutch shaft bearing 81 at the top of axle 10 is connected with locking ring 11, comes off to prevent axle 10.Rotor 20 is fixed to the part that bottom end side is given prominence to from second bearing 82 that is arranged in of axle 10.
With reference to Figure 14, rotor 20 comprises rotor keeper 21 and magnet 22.Rotor keeper 22 has the end and for tubular, and is fixed to a bottom of spools 10 for its rotation with rotation A.Magnet 22 is tubular and inner surface that be fixed to the perisporium of rotor keeper 21.Magnet 22 according to this preferred implementation is the neodymium magnet, and comprises the magnetic pole that arranges at regular intervals along circumferential direction, and wherein the N utmost point and the S utmost point alternately dispose.Stator 30 is arranged on the inboard of rotor 20, and separates minim gap with magnet 22.
With reference to Fig. 5 and Fig. 6, stator 30 comprises stator core 31.Stator core 31 comprises the tubular iron core 31a of portion and 12 31b of tooth portion, and these tooth portions are arranged to stretch out with the outer periphery of radial mode from the 31a of iron core portion.Stator 30 also comprises 12 coils 33.Each coil 33 all twines lead by the intervention insulating part 32 with insulation property by the independent tooth in the 31b of tooth portion and forms.In the internal perisporium of the 31a of iron core portion, be limited with four spires 34.Spire 34 uses for the screw in the 4th screwed hole 72 that is inserted among the minor diameter part 70b that is defined in shaft supporting part 70.Spire 34 arranges with regular substantially interval along circumferential direction.
Because stator 30 is connected to the minor diameter part 70b with relatively little external diameter of shaft supporting part 70, therefore under the situation of equal motor 1 performance, realize the reducing of diameter of stator 30.This feasible diameter that can also reduce rotor 20, the cumulative volume that enough causes magnet 22 for a short time of the diameter of rotor reduces and therefore reduces material cost, and the feasible radial dimension that can reduce motor 1.
The injection mo(u)lding product of insulating part 32 for being formed from a resin, and comprise upper end wall portion 90, this upper end wall portion is arranged to cover the upper surface of the 31a of iron core portion.Tubular limiting wall 91 is arranged to extend along the periphery of upper end wall portion 90, and in axial direction stands and establish.In addition, the radially inner side at limiting wall 91 arranges four disengaging-proof portions 92 in upper end wall portion 90.These disengaging-proof portions 92 arrange with regular substantially interval along circumferential direction.These disengaging-proof portions 92 include arm 92a and hook portion 92b.Arm 92a is arranged in axial direction extend and can deflection deformation.Hook portion 92b is arranged on the top of arm 92a.With reference to Fig. 7, hook portion 92b is arranged to towards radial outside outstanding, and the top of the upper end of limiting wall 91 is arranged to be positioned in the lower end of hook portion 92b.
Disengaging-proof portion 92 and limiting wall 91 combinations, the operation that is used for improving assembly operation.In addition, limiting wall 91 is also with being restricted portion, and is outstanding towards the 31a of iron core portion to prevent from the lead of coil 33.Draw line end 93 from the predetermined position of stator 30, that is, the end of six conductors is to be connected in circuit board 40.More particularly, upwards draw at two leads each position from three different positions that closely arranges each other.
Fig. 8 illustrates circuit board 40.Circuit board 40 has and is supplied to stator 30 with the performance of rotation of control rotor 20 in the electric current from external source.At circuit board 40 transistor such as FET(is installed) 41(they are switching devices), the electronic unit of capacitor 42 and Hall IC 43 etc.Although do not illustrate among the figure, the circuit of being made up of these electronic unit interconnection is defined on the surface of circuit board 40.Circuit board 40 is arranged to the disc-like shape consistent with the interior shape of carriage 50.Circuit board 40 is limited with peristome 44 in the part in the central, so that shaft supporting part 70 is inserted through this peristome 44.In the periphery of peristome 44, be limited with radially outward recessed recess 45 at four different piece places corresponding with the disengaging-proof portion 92 of stator 30.Recess 45 equally spaced arranges with cardinal principle along circumferential direction.
With reference to Fig. 3, Hall IC 43 has the ability that changes the anglec of rotation that detects rotor 20 etc. according to the magnetic of rotor 20, and is arranged on the lower surface of circuit board 40.Hall IC 43 be arranged to magnet 22 opposed and be arranged on rotor 20 near near the outer peripheral edges of circuit board 40 1 sides.
In addition, transistor 41 is arranged on the radial outside that leans on of Hall IC 43.This is because of this rotor when rotor 20 is arranged near circuit boards 40 otherwise can contacts with transistor body 41b, and must not be influenced by heat because of Hall IC 43.Therefore, transistor 41 is arranged in the space of radial outside of rotor 20, this space be owing to the diameter of aforesaid rotor 20 reduce obtain, and transistor 41 be arranged on circuit board 40 with the opposed outer peripheral edges of 51b portion of shouldered wall portion on.As a result, also realize the reducing of axial dimension of motor 1.
Four different parts places in the outer peripheral edges portion of circuit board 40 are formed with four second screwed holes 47.These second screwed holes 47 use for the screw among the 51b of shouldered wall portion that waits to be inserted into carriage 50.With reference to Fig. 3, circuit board 40 is fastened to the 51b of shouldered wall portion by the screw that inserts in second fastener hole 58 by second screwed hole 47.Because therefore described protuberance is limited with the gap between the inner surface of circuit board 40 and the 51b of shouldered wall portion.Guarantee the insulating properties between circuit board 40 and the carriage 50 thus.
With reference to Fig. 9, heat unit 41a is by as the heat transfer component 46 of the good insulating element of heat-conductive characteristic and contact with the inner surface face of the 51b of shouldered wall portion.Therefore, the heat energy that produces from transistor 41 enough stably is discharged into carriage 50 by heat transfer component 46.Note, for example can use silicone grease and fin etc. as heat transfer component 46.Heat transfer component 46 can be any form, as long as its heat conductivity and insulating properties are good.Heat transfer component 46 for example can be in a liquid state, gel state, be sheet form etc.And transistor body 41b is arranged on the lower surface of circuit board 40.Therefore, compare with the situation that transistor body 41b wherein is arranged on the upper surface of circuit board 40, the location that can realize circuit board 40 with big precision, and irrelevant with the positioning accuracy of the size of transistor body 41b or transistor body 41b.This makes and the precision that can improve the distance between Hall IC 43 and the magnet 22 has improved the precision of surveying the anglec of rotation thus.
With reference to Fig. 8, circuit board 40 in the part between two second screwed holes 47 wherein, be provided with lead-in wire connecting portion 48 with being adjacent to each other.Four lead-in wires of the electric equipment that is connected to the outside that is placed on motor 1 among the lead-in wire 48a are connected respectively to lead-in wire connecting portion 48.With reference to Figure 10, the partition wall 64 of substrate plate 60 is positioned at the below of lead-in wire connecting portion 48.
In addition, with reference to Figure 10, lead-in wire connecting portion 48 is arranged to the portion of heaving 54 of carriage 50 opposed, thereby can avoid contacting between arbitrary lead-in wire 48a and the carriage 50 reliably.Each 48a that goes between draws outside the motor 1 under the situation that the intermediate portion is fixed to substrate plate 60, thereby even from outside tractive lead-in wire 48a, lead-in wire 48a can not act on any inside of carriage 50 yet.In addition, with reference to Fig. 8.Three different parts places in the upper surface of circuit board 40 or on this upper surface are provided with patchhole 49 and splicing ear 100.At each position of three different parts, one of them patchhole 49 and one of them splicing ear 100 are arranged to close to each other.Line end 93 is inserted through patchhole 49 and is connected to splicing ear 100.
With reference to Figure 11 and Figure 12, each splicing ear 100 is the punch process product for being made by metallic plate all, and comprise connecting portion 100a, elastic portion 100b and basal part 100c.The cross section of connecting portion 100a is the shape of letter C, and is arranged to surround and fixing line end 93 thus.Elastic portion 100b and connecting portion 100a are continuous, and the energy strain, and basal part 100c and elastic portion 100b are continuous, and are arranged to be connected to circuit board 40.Because the flexural deformation of elastic portion 100b, connecting portion 100a can be along the axial direction displacement vertical with circuit board 40.Therefore, the axial displacement slightly by fixing line end 93 such as welding can not make splicing ear 100 apply bigger load at circuit board 40.
The assembling of motor
Next, with reference to Figure 13 and Figure 14, now will be below the assemble method of motor 1 be described.At first, with reference to Fig. 7, the disengaging-proof portion 92 of stator 30 is installed in the recess 45 of circuit board 40, and as shown in figure 13, circuit board 40 is fixed to stator 30 provisionally.This is temporary fixed locatees circuit board 40 along circumferential direction regularly with respect to stator 30, allows circuit board 40 in axial direction mobile slightly with respect to stator 30 simultaneously.At this moment, line end 93 is positioned at the below of each patchhole 49 of circuit board 40, thereby can be easily line end 93 be passed patchhole 49 from the upper surface of circuit board 40 tractive that makes progress.
Two in the line end 93 are pulled in this way by each patchhole 49, and are fixed to the connecting portion 100a of the splicing ear of correspondence in the splicing ear 100 by welding etc.If stator 30 is rotated in downside with respect to circuit board 40, then circuit board 40 is supported on the limiting wall 91, to be conducive to this fixation procedure.Even circuit board 40 in axial direction is shifted with respect to stator 30 after fixation procedure, the strain of splicing ear 100 also can prevent from circuit board 40 is applied excessive load.In addition, before this fixation procedure, with this fixation procedure simultaneously or after this fixation procedure, the 48a that will go between is connected to circuit board 40.
Next, with reference to Figure 14, stator 30 grades are installed to carriage 50.The temporary fixed operability that here improved of stator 30 and circuit board 40.At first by circuit board 40, stator 30 grades are placed in the carriage 50, and screw is inserted in second screwed hole 47 and second fastener hole 58, so that circuit board 40 is fixed to carriage 50.Equally, screw is inserted in spire 34 and the 4th screwed hole 72, so that stator 30 is fixed to shaft supporting part 70.At this moment, limiting wall 91 helps to prevent any coils 33 of contact such as screwdriver.Note, before this assembling process, carry out the connection of clutch shaft bearing 81 to the interference fit of carriage 50 and heat transfer component 46 to the inner surface of the 51b of shouldered wall portion etc.
Next, wave washer 83 is placed in second dead eye, and afterwards second bearing 82 is inserted in second dead eye, and be placed on the top of wave washer 83.To fixedly there be axle 10 insertions of rotor 20 to pass shaft supporting part 70 then, outstanding from carriage 50 up to the top portion of axle 10.Locking ring 11 be installed in mounting groove in the base end part that be defined in axle 10 top, so that axle 10 grades be installed to carriage 50 etc. thereafter.
Then, after having connected liner 65 grades, screw is inserted in the 3rd screwed hole 63 and group's three fastener holes 59, so that substrate plate 60 is fixed to carriage 50.
Note, be not limited to according to the motor 1 of above-mentioned preferred implementation etc. according to the motor of preferred implementation of the present utility model, but comprise various other motors with different structure.
With reference to Figure 15 and Figure 16, carriage 50 for example can be die casting product made of aluminum.In this case, can be limited with par 51b in the internal face of carriage 50, this par 51b is circular shape and extends along the circumferential direction vertical with rotation A.In this case, transistor 41 is arranged to this par 51b opposed, and the part of circuit board 40 is fixed to par 51b.In order to improve the cooling performance of circuit board 40, the good insulating trip of heat conductivity etc. can be set between par 51b and circuit board 40.Notice that the parts with identical function are represented with identical Reference numeral with part, and omitted giving unnecessary details it.
With reference to Figure 17, Figure 18 and Figure 19, can in the 51b of shouldered wall portion, be limited with protuberance 55.In this case, circuit board 40 is arranged to contact with the 51b of shouldered wall portion face, and wherein protuberance 55 is arranged to transistor 41 and other electronic units opposed.
Thus, circuit board 40 its outer peripheral edges portion be arranged on a large scale be fixed under the tight state of contact of inner surface with the 51b of shouldered wall portion.Therefore, circuit board 40 stably is fixed to carriage 50 and without undergoing flexural deformation, and the clearance space between circuit board 40 and the carriage 50 also can limit with high accuracy.Therefore, can stably guarantee contact and the separating of other electronic unit and carriage of each transistor 41 by heat transfer component 46 and carriage 50.
The insertion material of predetermined thickness can be set, between transistor 41 and carriage 50, to limit the gap between the outer peripheral edges portion of the inner surface of the 51b of shouldered wall portion and circuit board 40.Although shaft supporting part 70 can be arranged to external diameter the mode with ladder reduces towards the top as above-mentioned preferred implementation, shaft supporting part 70 can be arranged to external diameter and reduce gradually in a continuous manner towards the top.
Description of reference numerals
1 motor
10
20 rotors
30 stators
40 circuit boards
41 transistors
50 carriages
51 surrounding wall portion
51b shouldered wall portion
52 end wall
53 flange parts
60 substrate plates
70 shaft supporting parts
81 clutch shaft bearings
82 second bearings
The A rotation.
Claims (5)
1. motor, described motor comprises:
Axle, described axle is arranged to rotate around rotation;
Rotor, described rotor are fixed to the end of described axle;
Stator, described stator are arranged in the described rotor;
Carriage, described carriage is arranged to hold described axle, described rotor and described stator, and comprise surrounding wall portion and end wall, described surrounding wall portion is arranged to around the periphery of described axle, described rotor and described stator, and described end wall is arranged to seal an end of described surrounding wall portion; And
Substrate plate, described substrate plate is installed to described carriage, and is arranged to seal the end opposite of described surrounding wall portion,
It is characterized in that:
Be provided with the shaft supporting part of tubular in the inboard of described end wall, described shaft supporting part extends along the direction of described substrate plate,
Described shaft supporting part is arranged to by pair of bearings described axle is supported for rotatable,
Described pair of bearings is made of the clutch shaft bearing on the base portion that is arranged on described shaft supporting part and second bearing that is arranged on the top of described shaft supporting part, and the diameter of described second bearing is less than the diameter of described clutch shaft bearing,
Described shaft supporting part is arranged in the external diameter at described top than little at the external diameter of described base portion,
Described motor also comprises circuit board, and described circuit board comprises in the central the peristome that limits in the part, and at this circuit board electronic unit is installed, and described electronic unit comprises switching device,
Described circuit board is contained in the described carriage under described shaft supporting part is inserted into situation in the described peristome,
The inner surface of described surrounding wall portion comprises the par, and described par is arranged to extend perpendicular to the circumferential direction of described rotation along cardinal principle,
Described switching device is arranged on the predetermined portions of circumference of described circuit board, and described predetermined portions is positioned at the radially outer of described rotor, and opposed with described par, and
Described switching device is being arranged to by under the heat transfer component of insulation and the situation that described par contacts described circuit board is fixed to described carriage.
2. motor according to claim 1 is characterized in that,
Described switching device is transistor, and
Described transistor comprises:
Heat unit, described heat unit are arranged on the surface of the more close described par of being positioned at of described circuit board one side; And
Transistor body, described transistor body are arranged on the surface that is positioned at opposition side of described circuit board, and are integrally connected to described heat unit by heat transfer path.
3. motor according to claim 2 is characterized in that,
Described electronic unit comprises capacitor, and
Described capacitor is arranged in the space between described par and the described end wall.
4. according to each described motor in the claim 1 to 3, it is characterized in that,
Described circuit board comprises recess, and these recesses are limited to a plurality of different parts place in the periphery of described peristome, and radially outward recessed,
Described stator comprises:
A plurality of disengaging-proof portions, these disengaging-proof portions include arm and hook portion, described arm is arranged to extend and can deflection deformation along axis direction, described hook portion be arranged on the top of described arm and can with described recess in a corresponding recess engage; And
Restriction portion, described restriction portion is arranged to temporary fixed described circuit board, and make by described circuit board being placed between described restriction portion and the described a plurality of disengaging-proof portion, and described circuit board can be slided along described axial direction, and
Described stator is fixed to described shaft supporting part.
5. motor according to claim 4 is characterized in that,
Described circuit board comprises splicing ear, and the lead of drawing from described stator is connected to described splicing ear, and
Described splicing ear comprises:
Connecting portion, described lead fixed is to described connecting portion;
Elastic portion, described elastic portion be arranged to described connecting portion continuously and can be along described axis direction strain; And
Basal part, described basal part be arranged to described elastic portion continuously and be connected to described circuit board.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010185411A JP2013153544A (en) | 2010-08-20 | 2010-08-20 | Motor |
| JP2010-185411 | 2010-08-20 | ||
| PCT/JP2011/004298 WO2012023245A1 (en) | 2010-08-20 | 2011-07-28 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166659U true CN203166659U (en) | 2013-08-28 |
Family
ID=45604916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011900006258U Expired - Lifetime CN203166659U (en) | 2010-08-20 | 2011-07-28 | Motor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2013153544A (en) |
| CN (1) | CN203166659U (en) |
| DE (1) | DE112011102756T5 (en) |
| WO (1) | WO2012023245A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059147A (en) * | 2016-07-28 | 2016-10-26 | 奉化市兴宇电机制造有限公司 | Electric automobile air conditioner compressor drive DC brushless motor |
| CN109565232A (en) * | 2016-08-05 | 2019-04-02 | 日本电产株式会社 | Motor |
| CN110661350A (en) * | 2018-06-29 | 2020-01-07 | 日本电产株式会社 | Motor with a stator having a stator core |
| CN111098209A (en) * | 2018-10-29 | 2020-05-05 | 盖多·瓦伦蒂尼 | Hand-held and hand-guided random orbital burnishing or sanding power tool |
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| JP5947637B2 (en) * | 2012-06-29 | 2016-07-06 | オリエンタルモーター株式会社 | Mounting method and mounting structure of sensor board of brushless motor |
| JP6270510B2 (en) * | 2014-01-30 | 2018-01-31 | 東京パーツ工業株式会社 | DC brushless motor |
| JP2016226179A (en) * | 2015-05-29 | 2016-12-28 | 日本電産株式会社 | motor |
| DE102015210420A1 (en) * | 2015-06-08 | 2016-12-08 | Robert Bosch Gmbh | Electrically commutated electric motor and comfort drive with an electric motor |
| FR3043858B1 (en) * | 2015-11-13 | 2020-05-29 | Valeo Systemes Thermiques | ELECTRIC MOTOR POWER CONTROL MODULE |
| EP3496248B1 (en) * | 2016-08-05 | 2022-02-09 | Nidec Corporation | Motor |
| JP6635994B2 (en) * | 2017-09-13 | 2020-01-29 | シナノケンシ株式会社 | Blower |
| JP6616367B2 (en) * | 2017-09-13 | 2019-12-04 | シナノケンシ株式会社 | motor |
| US11973374B2 (en) | 2019-04-24 | 2024-04-30 | Black & Decker Inc. | Outer rotor brushless motor having an axial fan |
| JP7478010B2 (en) * | 2020-03-31 | 2024-05-02 | 平田機工株式会社 | Rotating Electric Machine |
| JP2022069124A (en) * | 2020-10-23 | 2022-05-11 | ミネベアミツミ株式会社 | motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004096905A (en) * | 2002-08-30 | 2004-03-25 | Nidec Shibaura Corp | Motor |
| JP2006180643A (en) * | 2004-12-24 | 2006-07-06 | Aichi Electric Co Ltd | Motor |
| JP4512803B2 (en) | 2008-10-15 | 2010-07-28 | シナノケンシ株式会社 | Brushless motor |
| JP2010098817A (en) | 2008-10-15 | 2010-04-30 | Shinano Kenshi Co Ltd | Outer-rotor brushless motor |
| JP2010098816A (en) | 2008-10-15 | 2010-04-30 | Shinano Kenshi Co Ltd | Blower motor |
-
2010
- 2010-08-20 JP JP2010185411A patent/JP2013153544A/en not_active Withdrawn
-
2011
- 2011-07-28 CN CN2011900006258U patent/CN203166659U/en not_active Expired - Lifetime
- 2011-07-28 WO PCT/JP2011/004298 patent/WO2012023245A1/en active Application Filing
- 2011-07-28 DE DE112011102756T patent/DE112011102756T5/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059147A (en) * | 2016-07-28 | 2016-10-26 | 奉化市兴宇电机制造有限公司 | Electric automobile air conditioner compressor drive DC brushless motor |
| CN109565232A (en) * | 2016-08-05 | 2019-04-02 | 日本电产株式会社 | Motor |
| CN109565232B (en) * | 2016-08-05 | 2021-02-05 | 日本电产株式会社 | Motor |
| US11063496B2 (en) | 2016-08-05 | 2021-07-13 | Nidec Corporation | Vertical motor with resin bracket and cover having circuit board with wireless communication unit |
| CN110661350A (en) * | 2018-06-29 | 2020-01-07 | 日本电产株式会社 | Motor with a stator having a stator core |
| CN110661350B (en) * | 2018-06-29 | 2022-06-28 | 日本电产株式会社 | Motor |
| CN111098209A (en) * | 2018-10-29 | 2020-05-05 | 盖多·瓦伦蒂尼 | Hand-held and hand-guided random orbital burnishing or sanding power tool |
| CN111098209B (en) * | 2018-10-29 | 2023-12-19 | 盖多·瓦伦蒂尼 | Hand-held and hand-guided random track polishing or sanding power tool |
| CN117381614A (en) * | 2018-10-29 | 2024-01-12 | 盖多·瓦伦蒂尼 | Hand-held and hand-guided random track polishing or sanding power tool |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012023245A1 (en) | 2012-02-23 |
| JP2013153544A (en) | 2013-08-08 |
| DE112011102756T5 (en) | 2013-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |