CN1103134C

CN1103134C - Fan motor

Info

Publication number: CN1103134C
Application number: CN98126226A
Authority: CN
Inventors: 上野俊司; 上田修
Original assignee: Toshiba Corp
Current assignee: Toshiba Lifestyle Products and Services Corp
Priority date: 1998-07-10
Filing date: 1998-12-25
Publication date: 2003-03-12
Anticipated expiration: 2018-12-25
Also published as: KR100330435B1; CN1241833A; KR20000010510A; TW390060B; JP2000032697A

Abstract

The present invention relates to a fan motor. After the stator iron core 26 is wound by the coil 29, the stator body 35 will use the mold plastic layer 34 made of PBT to cover the stator iron core 26 and the coil 29, the bearing bracket 17 is pressed into the inner peripheral face of the stator iron core 26 from the left side, the motor frame 11 is held between the bearing bracket 17 of the left side and the stator body 35. Therefore, the motor frame 11 is installed in the stator body 35 by an sufficient strength, accordingly, the installation of the motor frame 11 is simplified, and the number of the parts is reduced.

Description

Fan motor

The present invention relates to the fan rotation is driven and the fan motor of air-supply.

The existing structure of said fans motor now is described according to Fig. 8.In conjunction with front baffle 1a and afterframe 1b, the lining 3 of rubber system is installed respectively on former frame frame 1a and the afterframe 1b with a plurality of screws 2, stator core 4 is arranged in 3 clampings of two linings.Interior perimembranous in this stator core 4 accommodates rotor, is fixed with fan 6 on the rotating shaft 5 of rotor.

In the occasion of said structure, sandwich stator core 4 by 1 group of motor frame 1a and 1b, therefore, except the part number increases, also to carry out the very operation of trouble between screw motor frame 1a and 1b.

Shortcoming in view of above-mentioned existence the objective of the invention is, and provides that a kind of part number is few, the simple fan motor of motor frame installation exercise.

The characteristics of the fan motor of technical scheme 1 are to have: the stator body that contains the stator core of coiling winding; Go into the bearing bracket of described stator core inner peripheral surface from an axial side pressure; Be installed in the bearing on the described bearing bracket; Can be rotated to support on rotating shaft on the described bearing, the rotation drive fan; The motor frame of clamping between described stator body and described bearing bracket.

According to said structure, clamping has motor frame between stator body and bearing bracket.Therefore, need not screw pair of motors framework and come the clamping stator body, and can motor frame be installed on the stator body, thereby the installation exercise of motor frame becomes simply, and the part number also reduces with enough intensity.

The characteristics of the fan motor of technical scheme 2 have: be provided with the bell-jar that surrounds fan by a plurality of stays on motor frame.

Adopt said structure,, become simple so the shape of face is set owing to need not to form bell-jar on the face being provided with of motor frame.

The characteristics of the fan motor of technical scheme 3 have: overlapping and be located on the stator body to the stay of the binding post portion of winding power supply usefulness and regulation.

Adopt said structure, because the stay of the binding post portion of stator body and regulation is overlapping, so can prevent the phenomenon that draft capacity that binding post portion becomes fan resistance, fan reduces because of the influence of binding post portion.

The characteristics of the fan motor of technical scheme 4 have: the poroid portion of being pressed into that has teat at inner peripheral surface is located on the motor frame, and bearing bracket is pressed into above-mentioned being pressed in the portion.

Adopt said structure, because bearing bracket is pressed into being pressed in the portion of motor frame, so can prevent the loosening of the relative motor frame of bearing bracket.

The characteristics of the fan motor of technical scheme 5 have: the holding section that engages with motor frame is located on the bearing bracket.

Adopt said structure,, break away from the phenomenon of motor frame and stator body so can prevent the vibration of bearing bracket when working etc. because the holding section of bearing bracket engages with motor frame.

The characteristics of the fan motor of technical scheme 6 have: be provided with a plurality of holding sections on the peripheral part of stator body, be provided with a plurality of portions that are stuck that engage described a plurality of holding sections respectively on motor frame, described each holding section or the described respectively portion of being stuck make and the outer peripheral face of described motor frame or the overlapping pin shape of outer peripheral face of described stator body.

Adopt said structure, engage with the portion of being stuck of motor frame owing to be positioned at a plurality of holding sections of the peripheral part of stator body, so the perpendicularity of the relative motor frame of stator body is higher.And, since each holding section or respectively the portion of being stuck make and the outer peripheral face of motor frame or the overlapping pin shape of outer peripheral face of stator body, so the perpendicularity of the relative motor frame of stator body is just higher.

The characteristics of the fan motor of technical scheme 7 have: the end face in motor frame one side of stator body is provided with fitting portion, the end face of stator body one side of motor frame be provided with chimeric described fitting portion by fitting portion, described fitting portion and describedly done circlewise by fitting portion.

Adopt said structure, as long as chimeric by fitting portion with the fitting portion of stator body and motor frame just can be positioned at stator body on the motor frame with the self centring state.And, owing to seal at fitting portion and between by fitting portion, so shipwreck enters inside with the boundary face from stator body and motor frame.

The characteristics of the fan motor of technical scheme 8 have: the inner peripheral surface in stator core has been pressed into another bearing bracket from axial opposite side, and the end face of another bearing bracket one side is provided with the tube portion that can be pressed into another bearing bracket in stator body.

Adopt said structure, owing to be pressed into another bearing bracket in the simple portion of stator body, so shipwreck is to enter inside between another bearing bracket and stator body.

The characteristics of the fan motor of technical scheme 9 have: the binding post portion to winding power supply usefulness is located on the stator body, and the terminal of this binding post portion is covered by the binding post lid.

Adopt said structure,, run into terminal so can prevent sealing because the terminal of binding post portion is covered by the binding post lid.

The characteristics of the fan motor of technical scheme 10 have: its peristome of binding post portion to winding power supply usefulness down is located on the stator body.

Adopt said structure,, also can fall, accumulate in the binding post portion so can prevent sealing by the peristome of binding post portion even for example water enters in the binding post portion.

The characteristics of the fan motor of technical scheme 11 have: the terminal base with the conductive plate that is electrically connected with winding is located at the distolateral or another is distolateral of stator body, and the coupling part of described conductive plate and described winding is coated by resinous embossed plies.

Adopt said structure because the coupling part of conductive plate and winding coats with resinous embossed plies, so can prevent attachment of moisture both the coupling part and make the insulation property variation.

The characteristics of the fan motor of technical scheme 12 have: be provided with the bell-jar that surrounds fan by 4 bracing bars on motor frame, and be provided with 3 installation portions in circumferential described relatively each stay dislocation on bell-jar.

Adopt said structure, because 3 of bell-jars are bearing on the face of setting, influenced so the warpage etc. of face can not be set, bell-jar can easily be installed on the face of setting.And, owing between the vibrational state of the vibrational state of the stay in when work and bell-jar, can create a difference, so can prevent the overlapping and generation amplification of both rattles.

The characteristics of the fan motor of technical scheme 13 have: to axially being laminated, the burr that is positioned at each magnetic sheet of axial both sides points to the other side's side with magnetic sheet in stator core.

Adopt said structure,, improve the operation that is pressed into bearing bracket owing to be pressed into bearing bracket, prevent that bearing bracket is stuck on the burr at the inner peripheral surface of stator core.

The characteristics of the fan motor of technical scheme 14 have: the inner peripheral surface in stator core disperses to be provided with teat.

Adopt said structure, when the inner peripheral surface in stator core is pressed into bearing bracket, because of decentralized configuration at the nip outer peripheral face of bearing bracket of circumferential teat, extract from stator core so bearing bracket is very difficult.And, because bearing bracket partly is pressed into the inner peripheral surface of stator core, so can prevent the buckling of bearing bracket when being pressed into.

The characteristics of the fan motor of technical scheme 15 have: at the inner peripheral surface of stator core roughly uniformly-spaced to be provided with a plurality of teats.

Adopt said structure, when the inner peripheral surface at iron core is pressed into bearing bracket,, from stator core, extract so bearing bracket is very difficult because of the nip outer peripheral face of bearing bracket of a plurality of teats.And bearing bracket produces symmetry because of a plurality of teats at pressing position, and bearing bracket produces the distortion of balance better elastic when being pressed into, so can improve the operation that bearing bracket is pressed into stator core.

Fig. 1 is the figure (a represents integrally-built cutaway view except bell-jar, and b represents that along the cutaway view of X1-X1 line c is the cutaway view that X2 portion is amplified expression) of expression one embodiment of the invention

The arrow X3 of Fig. 2 (a) expression motor frame to view, (b) expression is along the cutaway view of X4-X4 line.

Fig. 3 is a stereogram of representing big width stay and binding post lid with decomposing state.

Fig. 4 (a) amplifies the cutaway view of expression with the rear bearing assembling, (b) is the cutaway view that X5 portion is amplified expression, (c) is the cutaway view that X6 portion is amplified expression.

Fig. 5 (a) be the expression stator core arrow X7 to view, (b) be cutaway view along the X8-X8 line, (c) be the figure that the steel plate of X9 portion is amplified expression, (d) be the figure that the steel plate of X10 portion is amplified expression.

Fig. 6 is the cutaway view that the X11 portion of (a) among Fig. 1 is amplified expression.

Fig. 7 (a) is the cutaway view along the X12-X12 line of the collar, (b) be arrow X13 to view.

Fig. 8 is the figure of suitable Fig. 1 of expression existing structure.

Below, in conjunction with Fig. 1 to Fig. 7 one embodiment of the invention is described.The present invention of present embodiment be applicable to wind to the fan motor of in refrigerator, blowing after the evaporator of refrigerator carry out cold windization.

At first, in Fig. 1 (a), motor frame 11 is to make the structure cylindraceous that the right side is sealed, and is formed with carriage and is pressed into hole 11a on motor frame 11.This carriage is pressed into hole 11a and is equivalent to be pressed into portion, is pressed into the inner peripheral surface of hole 11a at carriage, is formed with the circular rib 11b that is equivalent to teat shown in Fig. 4 (c).In addition, motor frame 11 is made by polybutylene terephthalate (PBT) (PBT).

At the outer peripheral face of motor frame 11, shown in Fig. 2 (a), be formed with 3 bracing bars 12 and 1 big bracing bars 13 of width to the narrow width of radially extending, the former is tabular by each stay 12 of narrow width.The big width stay 13 of the latter as shown in Figure 3, have binding post accommodation section 13a and lead accommodation section 13b, the cross section of the opening of binding post accommodation section 13a is コ word shape, and the cross section with an opening opposite side of binding post accommodation section 13a lead accommodation section 13b is コ word shape.The cross sectional shape of binding post accommodation section 13a and lead accommodation section 13b is represented in double dot dash line among Fig. 3.

On the top ends of the top ends of 3 bracing bars 12 and 1 bracing bars 13, shown in Fig. 2 (a), be formed with bell-jar 14.This bell-jar 14 is made the cylindric of both ends of the surface opening, is formed with 3 installation portion 14a at the outer peripheral face of bell-jar 14.Described each installation portion 14a makes tabular, is formed with the notch part 14b to the periphery side opening on each installation portion 14a.Be pressed into the lining 15 of rubber system in described each notch part 14b, each lining 15 is fixed on the tank wall of refrigerator.

At the inner peripheral surface of the rib 11b of motor frame 11, shown in Fig. 4 (a), be pressed into the axle accommodation section 17a of bearing bracket 17.These bearing bracket 17 usefulness metallic plates carry out pull and stretch and process, and have axle accommodation section 17a cylindraceous and discoid bearing lining tile accommodation section 17b.Outer peripheral face at the former axle accommodation section 17a shown in Fig. 4 (c), is formed with recess 17c, is engaging the rib 11b of motor frame 11 in recess 17c.On latter's bearing lining tile accommodation section 17b, shown in Fig. 4 (b), be positioned at outer peripheral face and be formed with circular removal stop section 17d.This removal stop section 17d is equivalent to the holding section, and engaging (embedding) is at the inner peripheral surface of motor frame 11.On the bearing lining tile accommodation section 17b of bearing bracket 17, shown in Fig. 4 (a), be positioned at that inner peripheral surface is chimeric a metal cover 18, the peristome of bearing lining tile accommodation section 17b covers with cover 18.On this cover 18, be formed with the spring installation portion 18a of prominent shape, on spring installation portion 18a, be fixed with the thrust plate 19 of nylon system.

In the chimeric left part that stage clip 20 is arranged of the outer peripheral face of spring installation portion 18a.These stage clip 20 usefulness compression helical springs are made, and metal bearing cap 21 is installed in the right part of stage clip 20.In addition, in cover 18, accommodate bearing lining tile 22.The outside of this bearing lining tile 22 is made circular-arc, and bearing cap 21 is combined in the outer peripheral face of bearing lining tile 22 with the elastic card of stage clip 20, and with bearing lining tile 22 by the inner peripheral surface that is pressed in bearing bracket 17.

In the bearing lining tile accommodation section 17b of bearing bracket 17, be positioned at the bottom surface and be equipped with circular felt 23, be positioned at cover 18 inner peripheral surfaces and be equipped with felt 24 cylindraceous.Immersion lubrication oil on described felt 23 and 24, bearing lining tile 22 is lubricated by the lubricating oil that oozes out from felt 23 and 24.In addition, the rear bearing assembly that constituted by bearing bracket 17, cover 18, thrust plate 19, stage clip 20, bearing cap 21, bearing lining tile 22, felt 23 and 24 of symbol 25 expression.

On the right part of bearing bracket 17, shown in Fig. 1 (a), stator core 26 is installed.This stator core 26 is shown in Fig. 5 (b), be to axially being laminated with multi-disc steel plate 26a, the steel plate 26a that is positioned at an axial side is shown in Fig. 5 (c), the burr 26b that produces when the stamping-out is adapted to the sensing opposite side, the steel plate 26a that is positioned at axial opposite side is adapted to the burr 26b that produces when the stamping-out and points to a side shown in Fig. 5 (d).Steel plate 26a is equivalent to magnetic sheet.

At the inner peripheral surface of stator core 26, shown in Fig. 5 (a), be formed with 3 teat 26c.Described teat 26c be with 120 ° uniformly-spaced the configuration, at the inner peripheral surface of 3 teat 26c, shown in Fig. 1 (a), from left be pressed into bearing bracket 17 the axle accommodation section 17a.The symbol 26d of Fig. 5 (a) represents the tooth of stator core 26.

In stator core 26, shown in Fig. 1 (a), cover the insulating cover of going up with the PBT system 27 from axial both sides.Described two insulating covers 27 cover the integral body except a plurality of tooth 26d inner and outer circumferential surfaces, on the insulating cover 27 of left, as shown in Figure 6, are fixed with 3 lead terminals 28 (only illustrating 1).

In stator core 26, above two insulating covers 27, install around the winding 29 of U, V, each phase of W.The winding 29 of described each phase forms 1 magnet-wire continuous reeling on 3 tooth 26d, an end of 3 magnet-wires connects jointly, and the other end of 3 magnet-wires is wound on (so-called Y wiring) on the lead terminal 28 respectively.

Shown in Fig. 1 (a), the terminal base 30 of PBT system is housed on the insulating cover 27 of left, on terminal base 30, be formed with the 30a of binding post portion.The 30a of this binding post portion makes the case shape of lower aperture, is contained in the binding post accommodation section 13a of big width stay 13, covers the right side peristome of binding post accommodation section 13a.

In terminal base 30, be embedded with a plurality of conductive plates 31 (only illustrating 1) with the insertion molding mode.Described each conductive plate 31 is equivalent to the terminal of the 30a of binding post portion, and the bottom is stretched in the 30a of binding post portion.As shown in Figure 6, be formed with through hole 31a on described each conductive plate 31, each lead terminal 28 inserts in the through hole 31a, and soldering is on conductive plate 31.

On the 30a of binding post portion of terminal base 30, shown in Fig. 1 (a), chimeric have a binding post 32, and the terminal (not shown) of the bottom of each conductive plate 31 and binding post 32 is electrically connected.Be connected with lead 32a on each terminal (not shown) of this binding post 32, each lead 32a is accommodated in the 13b of lead accommodation section by the binding post accommodation section 13a of big width stay 13.

Shown in Fig. 1 (b), on big width stay 13, be positioned at the binding post lid 33 of the chimeric PBT of the having system of inner face of lead accommodation section 13b.コ word shape is made in the cross section of this binding post lid 33, in the upper end of binding post lid 33, is formed with engaging board 33a as shown in Figure 3.

Shown in Fig. 1 (a), on big width stay 13, be positioned at binding post accommodation section 13a and be formed with recess 13c.The chimeric engaging board 33a that binding post lid 33 is arranged in this recess 13c, the upper end of binding post lid 33 and the bottom of binding post accommodation section 13a are overlapping.In addition, be formed with sealing board 13d in the bottom of binding post accommodation section 13a, sealing board 13d is close to the board 33a that engages of binding post lid 33.

As shown in Figure 3, on big width stay 13, be positioned at the lead support plate 13e that lead accommodation section 13b is formed with コ word shape, on binding post lid 33, be formed with the lead support plate 33b of コ word shape.This lead support plate 33b is close to from below and lead support plate 13e shown in Fig. 1 (a), and shown in Fig. 1 (b), a plurality of lead 32a in the 13b of lead accommodation section are clipped between lead support plate 13e and the 33b.

A plurality of lead 32a are connected with the outlet side of phase inverter (not shown).The input side of this phase inverter is connected with commercial ac power source (not shown) by rectification circuit (not shown), on each phase winding 29, the terminal by binding post 32, the lead terminal 28 of insulating cover 27, conductive plate 31 and supply with the DC driven power supply by lead 32a.

Shown in Fig. 1 (a), in stator core 26, be formed with embossed plies 34 from two insulating covers 27.This embossed plies 34 is to form like this: be assembled in terminal base 30 on two insulating covers 27 and after the terminal line soldering welding with winding 29 on the conductive plate 31, shaping mould (not shown) put in stator core 26 injected the PBT that melts.The connecting portion of the outer peripheral face of stator core 26, winding 29 and conductive plate 31, the both ends of the surface of a plurality of winding 29, terminal base 30 etc. coat with embossed plies 34.

In addition, the stator module that symbol 35 expressions constitute with stator core 26, two insulating covers 27, a plurality of lead terminal 28, a plurality of winding 29, terminal base 30 and embossed plies 34, stator module 35 is equivalent to stator body.

At the outer peripheral face of motor frame 11, uniformly-spaced to be formed with a plurality of hook 11c (only illustrating 1).Described each hook 11c is equivalent to be stuck portion, is to axially extended pin shape.In addition, in the left side of embossed plies 34, be positioned at peripheral part uniformly-spaced to be formed with a plurality of claw 34a (only illustrating 1).Described each claw 34a is equivalent to the holding section, and 11c engages with hook, and the outer peripheral face of each hook 11c and embossed plies 34 is overlapping.And embossed plies 34 is pulled to motor frame 11 sides by claw 34a with the engaging power of hook 11c, is crimped on the right side of motor frame 11.

Shown in Fig. 1 (c), on the left side of embossed plies 34, be formed with circular rib 34b around stator core 26 peripheral parts.This rib 34b is equivalent to fitting portion, is formed with inclined plane 34c at the peripheral part of rib 34b.In addition, be formed with circular recess 11d in the right side of motor frame 11.This recess 11d is equivalent to by fitting portion, is formed with inclined plane 11e at the inner face of recess 11d.

The chimeric rib 34b that embossed plies 34 is arranged in the recess 11d of motor frame 11, inner and outer circumferential surfaces and the inclined plane 11e of the inner and outer circumferential surfaces of rib 34b and inclined plane 34c and recess 11d are close to, and are formed with the gap between the bottom surface of the left side of rib 34b and recess 11d.In addition, inclined plane 34c and 11e are provided in a side of the full week of rib 34b and recess 11d.

Shown in Fig. 1 (a), the inner peripheral surface at 3 teat 26c of stator core 26 is positioned at the collar 36 that axial central portion is inserted with nylon system, and the left side of the collar 36 is by on the axle accommodation section 17a that is pressed in bearing bracket 17.This collar 36 is circular shown in Fig. 7 (b), uniformly-spaced be formed with 3 teat 36a with 120 ° on the collar 36.Described each teat 36a to right-hand outstanding, is trapezoidal tabular shown in Fig. 7 (a).

The fore bearing assembly 37 of Fig. 1 (a) comprises: above-mentioned bearing bracket 17; Cover 18; Stage clip 20; Bearing cap 21; Bearing lining tile 22; Felt 23 and 24.At the inner peripheral surface of 3 teat 26c of stator core 26, from the right-hand axle accommodation section 17a that is pressed into the bearing bracket 17 of fore bearing assembly 37, each teat 36a of the collar 36 is clipped between the axle accommodation section 17a of two bearings carriage 17.

Be formed with the 34d of tube portion of toroidal in the right side of embossed plies 34.Be pressed into the bearing lining tile accommodation section 17b of the bearing bracket 17 of rear bearing assembly 25 on the inner peripheral surface of the 34d of this, 34d of tube portion and bearing lining tile accommodation section 17b are at axial overlap.In addition, on embossed plies 34, be positioned at the left part of the 34d of portion and be formed with circular support 34e, the left part of on support 34e, pushing bearing lining tile accommodation section 17b.

In the bearing lining tile 22 of rear bearing assembly 25 and in the bearing lining tile 22 of fore bearing assembly 37, rotatably be inserted with the left part and the right part of rotating shaft 38, the left part of rotating shaft 38 is by on the thrust plate 19 that is pressed in rear bearing assembly 25, and the right part of rotating shaft 38 connects the cover 18 of fore bearing assembly 37 and gives prominence to right-hand.

Axial central portion at rotating shaft 38 is formed with the minor diameter 38a that the cross section is a toroidal.The diameter dimension of this minor diameter 38a shown in Fig. 7 (a), set for the minimum value of the internal diameter size of the collar 36 about equally, minor diameter 38a is inserted in the collar 36.

Shown in Fig. 1 (a), on the right part of rotating shaft 38, be fixed with the rotation yoke 39 of steel plate system.This rotation yoke 39 is made and is sealed the cylindric of right side, is fixed with a plurality of rotary magnets 40 on the inner peripheral surface of rotation yoke 39.Described each rotary magnet 40 is to magnetize to form on rubber, and the outer peripheral face by air gap with stator core 26 is relative.

Be formed with the resin bed 41 of PBT system on the surface of rotation yoke 39, resin bed 41 covers the surface of rotation yoke 39.In addition, on resin bed 41, be formed with aerofoil fan 42.This fan 42 is made of a plurality of vane plate 42a, and when winding 29 energized, a plurality of vane plate 42a just do the one rotation with rotation yoke 39, thereby blow to the arrow A direction.The rotor assembly that symbol 43 expressions are made of rotating shaft 38, rotation yoke 39, a plurality of rotary magnet 40, resin bed 41 and fan 42.

The following describes the assemble sequence of above-mentioned motor.When assembling motor, be pre-assembled rear bearing assembly 25, stator module 35, fore bearing assembly 37 and rotor assembly 43.And, be pressed into the bearing bracket 17 of rear bearing assembly 25 at the inner peripheral surface of motor frame 11 from left, rear bearing assembly 25 is installed on the motor frame 11.Then, be pressed into the bearing bracket 17 of rear bearing assembly 25 from left, rear bearing assembly 25 is installed on the stator module 35 at the inner peripheral surface of 3 teat 26c of stator core 26.

In case rear bearing assembly 25 is installed on the stator module 35, then at the inner peripheral surface of 3 teat 26c of stator core 26 from the right-hand insertion collar 36.Then,, from the right-hand bearing bracket 17 that is pressed into fore bearing assembly 37 fore bearing assembly 37 is installed on the stator module 35 at the inner peripheral surface of 3 teat 26c of stator core 26.

In case fore bearing assembly 37 is installed on the stator module 35, then the left part of rotating shaft 38 is inserted in the bearing lining tile 22 of rear bearing assemblies 25 in the bearing lining tile 22 of bearing assembly 37 in the past, rotor assembly 43 is installed on rear bearing assembly 25, stator module 35, the fore bearing assembly 37.At this moment, the collar 36 is pushed in the left part of rotating shaft 38, and the collar 36 produces strain.And the left part of rotating shaft 38 is by the collar 36, and the minor diameter 38a of rotating shaft 38 is inserted in the collar 36 with the anti-avulsion state.

Adopt the foregoing description, motor frame 11 is clamped between the bearing bracket 17 of stator module 35 and rear bearing assembly 25.Therefore, carry out screw between will the pair of motors framework and come clamping stator module 35, and owing to intensity that can be enough is installed in motor frame 11 on the stator module 35, so except motor frame 11 installation exercises became simply, the part number also reduced.

In addition, because bell-jar 14 is set on motor frame 11, thus need not on the tank wall of refrigerator, to form bell-jar 14, thus the shape of tank wall becomes simply, be easy to the tank wall design, and mouldability improves.

In addition, the carriage that is pressed into motor frame 11 owing to the bearing bracket 17 with rear bearing assembly 25 is pressed in the 11a of hole, so can prevent the loosening of bearing bracket 17 relative motor frame 11.And bell-jar 14 is stable with the position relation of fan 42, disturbs mutually so can prevent both.

In addition, the inner peripheral surface that is pressed into hole 11a at carriage is provided with rib 11b, therefore, compare with the situation of the bearing bracket 17 of the whole crimping rear bearing of the inner peripheral surface that is pressed into hole 11a at carriage assembly 25, can less power carry out the operation that is pressed into of bearing bracket 17, the operation that is pressed into bearing bracket 17 becomes very easy.

In addition, engaged the removal stop section 17d of the bearing bracket 17 of rear bearing assembly 25 at the inner peripheral surface of motor frame 11, therefore, the vibration in the time of can preventing bearing bracket 17 because of work etc. breaks away from the situation of motor frame 11 and stator core 26.

In addition, owing to be provided with a plurality of hook 11c, each hook 11c is engaged, with the claw 34a of embossed plies 34 so improved the perpendicularity of stator module 35 relative motor frame 11 at the peripheral part of motor frame 11.And, because each hook 11c has been made the pin shape overlapping with the outer peripheral face of embossed plies 34,, can prevent the interference of fan 42 and bell-jar 14 etc. so can further improve the perpendicularity of stator module 35 relative motor frame 11.

In addition, disposed the hook 11c of motor frame 11 in the part of seeing from the outside, therefore, after the motor assembling, owing to can confirm whether hook 11c engages with claw 34a, thus can prevent hook 11c not with state that claw 34a engages under motor dispatched from the factory.

In addition, circular rib 34b and recess 11d on embossed plies 34 and motor frame 11, have been formed, therefore, as long as rib 34b is entrenched in the recess 11d, just can stator module 35 be positioned on the motor frame 11 the self centring state, thereby the positioning operation of stator module 35 relative motor frame 11 becomes easy.And, between rib 34b and recess 11d, form the labyrinth sealing of lost shape, therefore, can prevent the phenomenon that sealing enters inside, stator core 26 and winding 29 etc. got rusty because of moisture from the boundary face of embossed plies 34 and motor frame 11 with capillarity etc.

In addition, between the bottom surface of the left side of rib 34b and recess 11d, be provided with the gap, therefore, just easily the boundary face from embossed plies 34 and motor frame 11 entered inner water and cut off, can prevent that reliably sealing enters.

In addition, on rib 34b and recess 11d, formed inclined plane 34c and 11e, therefore, can prevent that the bight of rib 34b and the bight of recess 11d from blocking, easily rib 34b has been entrenched in the recess 11d.

In addition, owing on embossed plies 34, be provided with a 34d of portion, in the 34d of tube portion, be pressed into the bearing bracket 17 of fore bearing assembly 37, so the phenomenon that can prevent entering between the bearing bracket 17 of the past bearing assembly 37 such as sealing and the embossed plies 34 inside, stator core 26 and winding 29 etc. be got rusty because of moisture.

In addition, therefore the overlapping 30a of binding post portion of stator module 35 on big width stay 13, can prevent that the 30a of binding post portion from becoming fan resistance, reducing the phenomenon of the draft capacity of fan 42 because of the influence of the 30a of binding post portion.

In addition, owing to made 3 bracing bars 12 of narrow width and 1 big width stay 13 etc. are configured in blowing side (arrow A direction side), and do not dispose the structure of barrier in air draught side (with arrow A rightabout side), so can reduce fan 42 noise when rotated.

In addition, binding post lid 33 has been installed on big width stay 13, the terminal (end of conductive plate 31) in the 30a of binding post portion, the terminal in the binding post 32 have been coated at stay 13 and binding post with covering 33 watertights, therefore, the water that is produced in the time of can preventing to change the condensate produces, defrosting work with the temperature inside the box, cleaning water etc. splash on the interior terminal of terminal in the 30a of binding post portion and binding post 32 and make terminal get rusty, make the phenomenon of insulation property variation.

In addition, the overlapping upper end of binding post lid 33 on the binding post accommodation section 13a of big width stay 13, therefore, can prevent that the water that falls from the top along stay 13 from entering in the binding post lid 33 by binding post lid 33 and 13 of stays, can prevent to splash on the terminal and the terminal in the binding post 32 in the 30a of binding post portion, from this point, can prevent that also terminal from getting rusty, making the phenomenon of insulation property variation.

In addition, it is downward that the 30a of binding post portion and binding post 32 are configured to peristome, therefore, even water for example enter in the 30a of binding post portion with binding post 32 in, but owing to fall by peristome, so it is interior and make the phenomenon of insulation property variation to prevent that sealing accumulates in the 30a of binding post portion with binding post 32.

In addition, coated the coupling part of winding 29, therefore, can prevent making the coupling part get rusty, make the phenomenon of insulation property variation on the coupling part of sealing attached to both with conductive plate 31 with embossed plies 34.

In addition, owing on bell-jar 14, be provided with 3 installation portion 14a, be bearing on the tank wall,, can easily 3 installation portion 14a be installed on the tank wall so influenced by the warpage etc. of tank wall with 3 bell-jars 14 of naming a person for a particular job.And, make 3 narrow bracing bars 12 of each installation portion 14a relative width and big width stay 13 in circumferential misalignment, therefore, can between the vibrational state of the stay 12 in when work and 13 vibrational state and bell-jar 14, produce different, thereby can prevent the overlapping and phenomenon of generation amplification of the rattle of the rattle of

stay

12 and 13 and bell-jar 14.

In addition, each steel plate 26a that will be positioned at the axial both sides of stator core 26 is laminated into burr 26b and points to the other side's side, therefore, the bearing bracket 17 that is pressed into rear bearing assembly 25 when the inner peripheral surface in stator core 26 is during with the bearing bracket 17 of fore bearing assembly 37, can prevent that each bearing bracket 17 is stuck on the burr 26b, thereby improve the operation that is pressed into each bearing bracket 17.

In addition, inner peripheral surface in stator core 26 disperses to have formed teat 26c, therefore, the bearing bracket 17 that is pressed into rear bearing assembly 25 when the inner peripheral surface in stator core 26 is during with the bearing bracket 17 of fore bearing assembly 37, just the nip outer peripheral face of each bearing bracket 17 of teat 26c, thus each bearing bracket 17 is difficult to extract from stator core 26.And, because each bearing bracket partly is pressed into the inner peripheral surface of stator core 26, so can prevent each bearing bracket 17 buckling when being pressed into.

In addition, on the inner peripheral surface of stator core 26 uniformly-spaced to have formed 3 teat 26c, therefore, the bearing bracket 17 of rear bearing assembly 25 produces symmetry because of 3 teat 26c at pressing position at the bearing bracket 17 of pressing position, fore bearing assembly 37 because of 3 teat 26c, and because each bearing bracket 17 balance when being pressed into produces strain well, so improved the operation that is pressed into of each bearing bracket 17 relative stator iron core 26.Simultaneously, owing to increased the engage amount of each bearing bracket 17 with teat 26c, so each bearing bracket 17 more is difficult to extract from stator core 26.

In addition, formed each bearing bracket 17 with metal, therefore, expansion, the amount of contraction of the expansion of each bearing bracket 17, amount of contraction and stator core 26 become roughly the same, and each bearing bracket 17 and stator core 26 are difficult to produce creep (plastic deformation), put from this, each bearing bracket 17 also is difficult to extract from stator core 26.

In addition, in the above-described embodiments, integrally formed bell-jar 14 on motor frame 11, but be not limited thereto, for example also can bell-jar 14 be installed in addition on motor frame 11, perhaps also can make bell-jar is set on the tank wall of refrigerator, when being fixed on motor frame 11 on the tank wall in the structure of the peripheral part of fan 42 configuration bell-jar.

In the above-described embodiments, the inner peripheral surface that is pressed into hole 11a at the carriage of motor frame 11 is provided with circular rib 11b, the outer peripheral face that makes bearing bracket 17 and rib 11b crimping, but be not limited thereto, rib 11b for example also can give up, be pressed into the whole crimp shaft support bracket 17 of inner peripheral surface of hole 11a at carriage, the inner peripheral surface that perhaps also can 120 ° uniformly-spaced be pressed into hole 11a at carriage forms to axially extended rib, makes the outer peripheral face crimping of each rib and bearing bracket 17.

In the above-described embodiments, be to make the removal stop section 17d of bearing bracket 17 be absorbed in the inner peripheral surface of motor frame 11, but be not limited thereto, for example also can circular recess be set at the inner peripheral surface of motor frame 11, removal stop section 17d is fastened in the recess.

In the above-described embodiments, be that the hook 11c of motor frame 11 is engaged with the claw 34a of embossed plies 34, but be not limited thereto, for example also a plurality of hooks that are the pin shape to axially extended can be set at the peripheral part of embossed plies 34, peripheral part in motor frame 11 is provided with a plurality of claws, each hook of embossed plies 34 is engaged and overlapping with the outer peripheral face of motor frame 11 with the claw of motor frame 11.

In the above-described embodiments, circular rib 34d is set on embossed plies 34, circular recess 11d is set on motor frame 11, rib 34d is entrenched in the recess 11d, but be not limited thereto, for example also can circular recess be set on embossed plies 34, circular rib is set on motor frame 11, the rib of motor frame 11 is entrenched in the recess of embossed plies 34.

In the above-described embodiments, be in the stator core 26 from the cover of axial both sides insulating cover 27, coiling winding 29 from two insulating covers 27, but be not limited thereto, for example also stator core 26 can be contained in the shaping mould when injecting molten resin, on the surface of stator core 26, form insulating barrier, coiling winding 29 from the insulating barrier.

In the above-described embodiments, circular rib 34b is set on embossed plies 34, but is not limited thereto, for example also can 120 ° 3 teats be set uniformly-spaced, 3 teats are entrenched in the recess 11d of motor frame 11.Even in the occasion of this structure,, just can stator module 35 be positioned on the motor frame 11 with the self centring state as long as 3 teats of embossed plies 34 are entrenched in the recess 11d of motor frame 11.

In the above-described embodiments, in the bearing bracket 17 of rear bearing assembly 25 and in the bearing bracket 17 of fore bearing assembly 37, bearing lining tile 22 has been installed respectively, but be not limited thereto, for example also can in each bearing bracket 17, hold ball bearing, each end of rotating shaft 38 is pressed in the interior ring of ball bearing.

In the above-described embodiments, the 30a of binding post portion that in the binding post accommodation section 13a of big width stay 13, has held terminal base 30, but be not limited thereto, flat stay for example also can be set replace big width stay 13, be configured to axially see binding post portion 30 overlapping with flat stay.

In the above-described embodiments, at the end face of the insulating cover 27 that is positioned at motor frame 11 sides terminal base 30 has been installed, but has been not limited thereto, for example also can be at the end face installation end stroma 30 that is positioned at the insulating cover 27 of motor frame 11 opposition sides.

In the above-described embodiments, the present invention is applicable to the fan motor of DC brushless external-rotor-type, but is not limited thereto, for example also applicable to the fan motor of axial gap type.At this moment, also can by air gap a plurality of rotary magnets be faced in the right side of stator module 35.

In the above-described embodiments, the present invention is applicable to after wind carry out cold windization to the evaporator of refrigerator the fan motor to indoor air-supply, but be not limited thereto, for example also the present invention can be applicable to cold wind is blown to fan motor on the compressor etc. of refrigerator, cold wind blown to the fan motor of the fan that fan motor on the magnetron of microwave oven or the high-tension transformer etc. and rotation drive ventilation fan etc.

Learn that from above-mentioned explanation fan motor of the present invention can reach following effect.

Adopt the invention of technical scheme 1, clamping has motor frame between stator body and bearing bracket. Therefore, can motor frame be installed on the stator body with enough intensity, thus the peace of motor frame Pretend industry and become simple, and number of components also reduces.

Adopt the invention of technical scheme 2, owing to be provided with bell-jar in motor frame, so needn't be electronic Arranging of machine frame forms bell-jar on the face, therefore, the shape that face is set becomes simply, is easy to the face that arranges Design and raising arrange the mouldability of face.

Adopt the invention of technical scheme 3, because binding post section and stay are overlapping, so can prevent because of binding post section Impact and reduce the draft capacity of fan.

Adopt the invention of technical scheme 4, because bearing bracket is pressed into being pressed in the section of motor frame, So can prevent the loosening of the relative motor frame of bearing bracket, simultaneously, owing to the position of for example fan and bell-jar The relation of putting is stable, disturbs mutually so can prevent both, and, owing at the inner peripheral surface that is pressed into section teat is set, So can littler power be pressed into the operation of bearing bracket, the appearance thereby the operation that is pressed into bearing bracket becomes Easily.

Adopt the invention of technical scheme 5, the holding section of bearing bracket is engaged with motor frame, therefore, Vibration in the time of can preventing bearing bracket because of work etc. breaks away from motor frame or stator core.

Adopt the invention of technical scheme 6 and since a plurality of holding sections that are positioned at the stator body peripheral part respectively with electricity The section's of being stuck engaging of motivation framework, thus the perpendicularity of the relative motor frame of stator body improved, and And, because holding section or the section of being stuck are designed to periphery with outer peripheral face or the stator body of motor frame The pin shape that face is overlapping so can further improve the perpendicularity of the relative motor frame of stator body, can prevent example Disturb mutually such as fan and bell-jar.

Adopt the invention of technical scheme 7, be provided with the fitting portion of ring-type in stator body and motor frame With by fitting portion, therefore, as long as chimeric both, just can stator body be positioned at electronic by the self centring state On the machine frame, thereby carry out easily the positioning operation of the relative motor frame of stator body, and, because Fitting portion and being sealed between fitting portion is so can prevent that sealing is from the border of stator body and motor frame The phenomenon that face enters inside, stator core and winding etc. got rusty because of moisture.

Adopt the invention of technical scheme 8, owing to a section is set, in tube section, is pressed into another at stator body Bearing bracket is so can prevent that sealing is from entering inside, deciding because moisture makes between another bearing bracket and stator body The phenomenon that son iron core and winding etc. get rusty.

Adopt the invention of technical scheme 9, owing to the terminal that has covered with the binding post cover in the binding post section, so can Anti-sealing splashes on the terminal in the binding post section and makes terminal get rusty, make the phenomenon of insulating properties variation.

Adopt the invention of technical scheme 10, because the peristome of binding post section is disposed downwards, so even for example Water enters in the binding post section, also can fall by peristome. Therefore, can prevent that sealing accumulates in the binding post section Make terminal get rusty, make the phenomenon of insulating properties variation.

Adopt the invention of technical scheme 11, coated the connecting portion of conductive plate and winding with resinous embossed plies Divide, therefore, can prevent that attachment of moisture from making the coupling part get rusty, make insulating properties to become in both coupling parts The phenomenon of difference.

Adopt the invention of technical scheme 12, owing to be provided with 3 installation portions at bell-jar, so can not established Put the impacts such as warpage of face, can easily 3 installation portions be installed on the face of setting, and, each is installed The relative stay of section is in circumferential misalignment, therefore, produces between the vibrational state of the vibrational state of stay and bell-jar Give birth to different, thereby the showing of the rattle that can prevent stay overlapping and generation amplification with the rattle of bell-jar Resemble.

Adopt the invention of technical scheme 13, each magnetic sheet that will be positioned at the axial both sides of stator core is laminated into hair Thorn points to the other side's side, therefore, when the inner peripheral surface in stator core is pressed into bearing bracket, can prevent bearing retainer Frame is stuck on the burr, thereby improves the operation that is pressed into bearing bracket.

Adopt the invention of technical scheme 14, on the inner peripheral surface of stator core scattering device teat, therefore, When the inner peripheral surface in stator core is pressed into bearing bracket, just the nip outer peripheral face of bearing bracket of teat, thereby Be difficult to bearing bracket is extracted from stator core, and, because bearing bracket partly is pressed into stator core Inner peripheral surface, so can prevent the buckling of bearing bracket when being pressed into.

Adopt the invention of technical scheme 15, because a plurality of roughly uniformly-spaced to arrange at the inner peripheral surface of stator core Teat, the outer peripheral face of bearing bracket so a plurality of teat is nipped, bearing bracket just is difficult to pull out from stator core Go out, and bearing bracket produces symmetry because of a plurality of teats at pressing position, bearing bracket is when being pressed into Produce the good strain of balance, thereby improve the operation that bearing bracket is pressed into stator core, simultaneously, Owing to increased the engage amount of bearing bracket with teat, so bearing bracket more is difficult to extract from stator core.

Claims

1. fan motor has:

The stator body that contains the stator core of coiling winding;

Go into the bearing bracket of described stator core inner peripheral surface from an axial side pressure;

Be installed in the bearing on the described bearing bracket;

Can be rotated to support on rotating shaft on the described bearing, the rotation drive fan; It is characterized in that,

Clamping has motor frame between described stator body and described bearing bracket.

2. fan motor as claimed in claim 1 is characterized in that,

On motor frame, be provided with the bell-jar that surrounds fan by a plurality of stays.

3. fan motor as claimed in claim 2 is characterized in that, on stator body, is provided with binding post portion to winding power supply usefulness overlappingly with the stay of regulation.

4. fan motor as claimed in claim 1 or 2 is characterized in that, on motor frame, is provided with the poroid portion that is pressed into that has teat at inner peripheral surface,

Bearing bracket is pressed into above-mentioned being pressed in the portion.

5. fan motor as claimed in claim 1 is characterized in that, on bearing bracket, is provided with the holding section that engages with motor frame.

6. fan motor as claimed in claim 1 or 2 is characterized in that, is provided with a plurality of holding sections on the peripheral part of stator body,

On motor frame, be provided with a plurality of portions that are stuck that engage described a plurality of holding sections respectively,

Described each holding section or the described respectively portion of being stuck make and the outer peripheral face of described motor frame or the overlapping pin shape of outer peripheral face of described stator body.

7. fan motor as claimed in claim 1 or 2 is characterized in that, on stator body, the end face that is positioned at the motor frame side is provided with fitting portion,

On motor frame, the end face that is positioned at the stator body side be provided with chimeric described fitting portion by fitting portion,

Described fitting portion and described by fitting portion in the form of a ring.

8. fan motor as claimed in claim 1 is characterized in that, at the inner peripheral surface of stator core, has been pressed into another bearing bracket from axial opposite side,

On stator body, the end face that is positioned at another bearing bracket side is provided with the tube portion that can be pressed into another bearing bracket.

9. fan motor as claimed in claim 1 is characterized in that, on stator body, is provided with the binding post portion to winding power supply usefulness,

The terminal of this binding post portion is covered by the binding post lid.

10. fan motor as claimed in claim 1 is characterized in that, on stator body, is set as downwards to the peristome of the binding post portion of winding power supply usefulness.

11. fan motor as claimed in claim 1 is characterized in that, distolateral or another is distolateral at stator body is provided with the terminal base with the conductive plate that is electrically connected with winding,

The coupling part of described conductive plate and described winding is coated by resinous embossed plies.

12. fan motor as claimed in claim 1 is characterized in that, is provided with the bell-jar that surrounds fan by 4 bracing bars on motor frame,

On bell-jar, be provided with 3 at the circumferential installation portion of each stay dislocation relatively.

13., it is characterized in that to axially being laminated, the burr that is positioned at each magnetic sheet of axial both sides points to the other side's side with magnetic sheet in stator core as claim 1 or 8 described fan motors.

14. as claim 1 or 8 described fan motors, it is characterized in that, disperse to be provided with teat at the inner peripheral surface of stator core.

15. as claim 1 or 8 described fan motors, it is characterized in that, at the inner peripheral surface of stator core roughly uniformly-spaced to be provided with a plurality of teats.