CN109790675A

CN109790675A - Electric appliance direct-driving motor mounting device

Info

Publication number: CN109790675A
Application number: CN201780058469.2A
Authority: CN
Inventors: 拉塞尔·约瑟夫·杰克逊
Original assignee: Fisher and Paykel Appliances Ltd
Current assignee: Fisher and Paykel Appliances Ltd
Priority date: 2016-09-08
Filing date: 2017-09-08
Publication date: 2019-05-21
Also published as: WO2018048314A1

Abstract

It is a kind of for reinforcing the stiffening plate of the end wall of the bucket of washing machine.The plate is fastened to the recessed central portion of end wall around drive shaft, and including engagement features, the engagement features are for contacting and engaging the complementary characteristic being formed in on/within end wall.Motor, which can be recessed, to be mounted on a wall, to reduce the axial length of motor and tub assembly.Once effectively engaging, which just reinforces thinning end wall, makes it possible to effectively be transmitted to out-of-balance force from axis the radial outer region of end wall.Although the size and end wall dimensions of plate are different from the intrinsic manufacturing tolerance of these components, shape/setting of the shape and/or engagement features of plate enables plate to be rotatably coupled to end wall.A kind of direct drive motor component is also described, wherein this stiffening plate forms bearing block.

Description

Electric appliance direct-driving motor mounting device

Technical field

The present invention relates to a kind of motor mounting devices, are used to make the non-rotating part (or stator) of motor can be attached It is connected to household electrical appliance.In particular, but be not only, the present invention relates to for flexible (such as plastics) component wall or base portion plus Gu or stiffening device, the on-rotatably moving part of direct drive motor will be attached to the wall or base portion, it is (" horizontal for example, muzzle-loading Axis ")/roof-mounted (" vertical axis ") washing machine bucket (or " outer bowl ") rear wall/bottom wall, especially its mesospore or pedestal be Be weakened/thinning, with the part for the motor that accommodates or be recessed, it is used for volumetric efficiency.

Background technique

" automatic " washing machine of early stage has motor, and the motor is mounted on the frame of machine, their axis connection It connects, to drive the axis (and/or blender in top loader) of rotatable drum by belt.Recently, by the non-of motor Rotation (stator) is partially mounted directly to the rear wall (in the case where frontloader) of the fixed bucket of washing machine or bottom wall (is pushing up In the case where installation) become very universal, the rotor of motor is directly coupled to/on the drum shaft of machine.It is this " directly to drive It is dynamic " electric moter noise is smaller, rotary part that is more reliable and more effectively imparting power to machine.Direct drive motor It may include BLDC (brushless DC) motor, and can have internal rotor or can be " from inside to outside ", the magnet of rotor Load-carrying ring is spaced apart radially outwardly from the tip of the stator poles projected radially outwardly.

In washing machine bucket, pedestal/rear wall rigidity is for the hub via bucket and drum shaft to (interior) rotatable rolling It is vital that cylinder, which provides structural support,.Although rear wall or bottom wall are usually the structure for including integrally formed ribs, It will be simply referred to as " end wall " herein.When in roller there are when the high speed rotation of unbalanced load, big rotation along diameter To direction power and torque via in the end wall around bearing axis and hub (or bearing block) be transmitted to from roller it is outstanding on bucket The installation point of extension system.If bucket structure (especially end wall) is not hard enough, the big period may occur in bucket structure Property deflection, thus axis/roller/motor can be relative to bucket along moving radially.These vibrations of bucket may cause production Raw audible noise, and will not be effectively absorbed by suspension system.There is also the risks of vibration, cause component that physics occurs It collides and damages.

When bucket be made of plastic material and its end wall it is thinning to accommodate motor when, end wall usually rigidity not enough It is deformed as caused by above-mentioned out-of-balance force with resisting, has especially in modern laundry machine towards bigger laundry load and handle With the trend of increased rotation speed.In order to improve the rigidity of bucket end wall, it is known that the metal plate stator support plate of punching press is tight Be affixed on the outer surface of barrel end wall, then by the stator of direct drive motor be connected to the outer surface (for example, see Disclosed " motor mounting bracket " and " stator are distinguished in US7114355B and US8220295B supporter").However, the metal plate support plate by this punching press transmits radial force and power to the radially outer part of end wall For square only via a small amount of fastener such as screw, the fastener only provides local support region, and has and add in iterative cycles The possibility with the engagement of plastics end wall is unclamped after load.In some cases, the end wall of bucket can have similar wheel with support plate Exterior feature, and the internal range of support plate or external range are designed to the adjacent feature on contact end wall.However, due to two components In standard manufacturing tolerance caused by size difference, it is impossible to guarantee in the bucket end wall of major diameter and the engagement surface of support plate Between repeatably realize sufficiently tight cooperation.

It is also known that stator support plate is located in water by carrying out overmolded to plate during the injection molding of bucket (for example, with reference to US20040163428A and US8336341B) in the end wall of bucket.The support plate of this overmolded is usually by aluminium Alloy is cast, it might even be possible to be the flange of the roller bearings support tube of overmolded radially extended, or can be independent In bearing support pipe.Regrettably, the casting of this overmolded makes electric appliance increase sizable cost, and makes the system of bucket Make complication.

Further, kitchen or laundry facilities are manufactured into the substantially height of standard, width and depth dimensions, especially Must be assemblied in calibrated altitude workbench or under-counter front-loading washing machine in the case where.In order to meet current utilization The advantages of direct drive motor, carries out bigger clothing and loads the trend of processing, while maximizing the loading space in roller, Therefore a kind of selection is the thickness for reducing bucket end wall.This can reduce the rigidity of bucket certainly, to damage end wall resistance to deformation Ability, to deteriorate above-mentioned periodic deflection and vibration.It, can be by large-scale cast aluminium boss assembly mistake in order to compensate for this loss of rigidity It spends in the region for the end wall for being molded into bucket, which has been hollowed out, with accommodating portion motor.It is shown in US6681602B The embodiment of the solution, but again, manufacture is complicated, and the cost of this casting is excessively high.

It would thus be advantageous to provide a kind of cost-effective, firm and rigid reinforcing, installation or reinforcement dress It sets, for being structurally joining together radial inner portion and the radially outer part of the end wall of bucket, such as by centre bearing seat Exterior section is connected to the radially outer of bucket end wall, can provide in this way space for install directly drive it is electronic Machine without damaging the rigidity of bucket, while needing minimal number of fastener, and it is public to can adapt to the manufacture size between component Difference.

Summary of the invention

Therefore, it is an object of the present invention to provide a kind of reinforcings that the bucket with flexible washing machine is used together, peace Dress or reinforcement plate, at least meets above-mentioned requirements to a certain extent or it is at least the public or industry provides useful choosing It selects.

In a first aspect, the invention reside in a kind of stiffening plate, the stiffening plate is suitable for reinforcing the end wall of the bucket of washing machine, Include:

Inner margin portion, the inner margin portion surround the axis of central opening,

Main part, the main part extend radially outwardly into the radially outside of stiffening plate from the inner edge portion The radial extension of edge, the main part forms ring-shaped depression region, diameter of the ring-shaped depression region relative to main part It is axially displaced to external range, and

At least one engagement features, the engagement features are arranged in body region, at least suitable for the end wall with bucket One complementary characteristic interaction, for stiffening plate to be fixed to the upper, the engagement features or feature surround axis circumferentially Direction extends, and follows a path, wherein from axis to the radial distance of specific engagement features with from specific engagement feature First end towards the second end of specific engagement feature circumferential distance and increase.

In second aspect, the invention reside in a kind of direct drive motor component, which includes:

A pair coaxial alignment bearing spaced apart, each bearing include annular inside race and annular outer race,

First bearing supporting element and second bearing supporting element, one outer race within the bearing are located in the first axle It holds in each of supporting element and the second bearing supporting element, the first bearing supporting element and second bearing support Part links together,

Rotor, the rotor include rotor hub, the rotor hub have opening across its opening, in rotor hub with It a pair of bearings coaxial alignment and is axially positioned between the pair of bearing, and

Stator, non-one be rotatably fixed in bearing supports of the stator,

Wherein at least one of bearing supports include the stiffening plate according to first aspect.

In the third aspect, the invention reside in a kind of washing machines, comprising:

Casing,

Bucket, the bucket are connected to casing via suspension, which has end wall, which, which has, surrounds axis The opening of formation, the axially external of the end wall of bucket have around the ring-shaped depression region formed therein that is open,

Rotatable drum, the rotatable drum are mounted in bucket, are rotated about the axis with enclosing,

Drive shaft, the drive shaft are connected to the roller on axis, and the drive shaft passes through the opening in the end wall of bucket,

Wherein, bucket is joined to by stiffening plate bearing supports according to the direct drive motor of the second embodiment The outside of end wall is at least partially axially located in ring-shaped depression region by drive shaft.

In fourth aspect, the invention reside in a kind of washing machines, comprising:

Casing,

Bucket, the bucket are connected to casing via suspension, and the bucket has end wall, and the end wall, which has, to be surrounded The opening that axis is formed, the axially external of the end wall of the bucket have around the ring-shaped depression region formed therein that is open, And

According to the stiffening plate of first aspect, the stiffening plate is attached to the outside of end wall, the ring-shaped depression region of stiffening plate In the ring-shaped depression region in the end wall of bucket, the contact of at least one engagement features of stiffening plate and with the end wall of bucket Complementary engagement feature engagement, and

Motor, the motor have the rotor of installation on the driving shaft.

The invention reside in above and be contemplated that construction, hereafter only provide the embodiment of the construction.In particular, the present invention will It is incorporated in front-loading washing machine and is described Primary Reference, it is understood by those skilled in the art that the present invention can be more Widely apply.For example, the present invention can combine in other household electrical appliance, such as usually muzzleloading washing machine/drying Machine.The present invention can be also for example incorporated in roof-mounted or " vertical axis " washing machine.The present invention reference will also be made to External-rotor electric Motor is described, but inner-rotor type motor is alternatively used.In the following description, term " at least partly ground diameter To towards " for describing the orientation at engagement surface or edge, it should be appreciated, however, that surface does not need to be directed toward completely radially Or towards axis, but refer to it is expected that the normal vector (that is, in face of direction) on surface at least have perpendicular to Component in the plane of axis is directed to axis but regardless of normal vector and is still typically remote from axis.The term is also understood that To refer to surface or edge " at least partly axially extending ", so that it not only includes for example in the plane perpendicular to the axis In cylindrical or other surface/edge (that is, completely axial extension) with constant cross-section, and including being taper table Face/edge (that is, only part is axially extending).

Detailed description of the invention

It lets us now refer to the figures and describes preferred form of the invention, in the accompanying drawings:

Fig. 1 is the perspective view of the bucket component of the top loading machines of the prior art seen from below, is shown traditional Motor mounting device,

Fig. 2 be according to the present invention the exemplary front-loading washing machine comprising direct drive motor mounting device from top The perspective view seen,

Fig. 3 is the exploded perspective view of the roller of the front-loading washing machine for Fig. 2 and the first embodiment of tub assembly, is shown The embodiment of stiffening plate according to the present invention,

Fig. 4 is roller and the tub assembly perspective view seen from below in assembling orientation of Fig. 3,

Fig. 5 is the vertical cross-section of the axis of the roller and tub assembly across Fig. 4,

Fig. 6 is the perspective view of the second embodiment of roller and tub assembly with attachment motor seen from below, should It is attached the front-loading washing machine that motor is used for Fig. 2, there is the alternative form of stiffening plate shown in Fig. 3,

Fig. 7 is the roller of Fig. 6 and the bottom view of tub assembly, and

Fig. 8 is the exploded partial cutaway view of the bucket component of the front-loading washing machine comprising direct drive motor component, The direct drive motor component includes the embodiment of the stiffening plate according to the present invention as bearing block.

Specific embodiment

With specific reference to Fig. 1 and 2, well-known washing machine 20 include outer cage or " packing material " 21, the outer cage or " packing material " 21 includes outer tub assembly 1 (invisible in Fig. 2), and said tub component 1 includes substantial cylindrical, fixation (non- Rotation) bucket 2, for accommodating cleaning solution.Outer tub assembly 1 shown in Fig. 1 is the prior art from top loading machines Embodiment, wherein the non-rotating stationary part of direct drive motor 3 is directly connected to the cylindrical bucket on bucket axis End wall 4.Bucket 2 can be molded of plastic material, to include the round inner end wall of general flat, and in order to reinforce end wall 4, it is provided with the pattern of the axially extending ribs of radial 5 and circumferential 8 setting, the rib and the inner end wall and cylindrical side wall are attached It connects or one, the stator of motor 3 is attached to the axially external of central hub section and (is not shown in Fig. 1, but referring in Fig. 3 91), or around the protruding portion that axis is formed it is connected to the pattern of rib.As described above, term " end wall " used herein includes entire Generally radially extending pedestal or rear wall structure, including attachment or integrated bracing means.

In addition, the end wall 4 of bucket 2 can be molded on rigid tubular bearing block (not shown), the rigid tubular bearing block For example formed as metal extrusion, to for bearing and provide firm central shell in order to which stator to be fastened to thereon. Multiple suspension bonding stations 6 are circumferentially distributed (note that the outer surface of bucket can be and not connect around the lower part of bucket outer surface Continuous, as shown, being made of the outermost edge of the axially extending rib of end wall 4).Each bonding station 6 is used to receive outstanding The lower end of hanging rod, the lower end of the hanger bar is fixed at end on it on the casing of machine, so that bucket is suspended on casing. Substantial cylindrical rotatable perforation rotation bucket or roller 22 (invisible in Fig. 1) are provided in bucket 2, for keeping clothing Load, such as the clothing for washing.

The rotatable drum of top loading machines generally includes central agitator device or washing plate, the central agitator device or washes It washs plate and is designed to the mobile laundry load when enough cleaning solutions are added to bucket.The rotor 7 of motor 3 and drive shaft Lower end rotation engagement.Drive shaft passes through the central opening in stator along the axis of bucket, and (via sealing element) passes through in end wall 4 Centre bore, and engaged or engageable, selectively to be rotated with following alternative one:

Roller and blender/washing plate (being rotarily dried for high speed centrifugation), or

Only blender/washing plate (for vibrating, low speed washing).

Motor 3 shown in Fig. 1 is external rotor brushless DC (BLDC) or brushless d.c.motor (ECM), described outer to turn Sub brushless DC (BLDC) or brushless d.c.motor (ECM) have the stator around the pole of annular stator core to extend radially outwardly Winding, the stator winding are selectively motivated (not shown) by motor controller.Rotor 7 be generally " cupuliform " simultaneously And at its radially outer part include permanent-magnetic clamp, which provides alternate arctic rotor pole and South Pole rotor pole, the north Pole rotor pole and South Pole rotor pole are by small air gap and stator pole tip along being radially spaced.In our first open source literature The example electric motor of the configuration just described is disclosed in more detail in US20150207371A.

The description of the vertical axis to the prior art of Fig. 1 or top installed bucket component is generally applicable for trunnion axis laundry above Machine 20 or front-loading washing machine 20 (Fig. 2), although latter machine type does not need blender or clean plate in roller 22.? In the case where front-loading washing machine 20, bucket 2 can be formed as two axially spaced half portions, and described two half portions are then close It seals or welds together that (although subsequent attached drawing is omitted " preceding " bucket half portion, " preceding " the bucket half portion includes entering opening, described Into the register with the door of machine 23 when in use that is open).It is well known that front-loading washing machine 20 further includes control panel 24, dismountable upper plate or cover board 25 and stabilizer blade 26.

Fig. 3 to Fig. 5 shows the exemplary washing barrels component of the front-loading washing machine for Fig. 2.As can be seen that rotation bucket 22 (visible by the center window of door 23) include open front 30, substantial cylindrical perforated side wall 31 and perforation end wall 32.Rolling Drum shaft 33 on cylinder axis extends far from support construction, such as is attached to the casting 34 of the cylindrical wall of adjacent end wall 32.Casting Part 34 can form that there are three the spokes that radially extend for example between the periphery of roller and axis 33.After axis 33 is adapted to pass through bucket Central opening 35 in half portion 36, to be ultimately connected to rotor 7 (being not shown in Fig. 3), rotor 7 and the stator 37 of motor are coaxial It installs and to be rotated around the stator 37 of motor in ground.

A pair of (preferably single pair) axially spaced bearing is located in central opening 35, for being pivotably supported axis 33. Preferably, bearing is individually to roll (or " rolling element ") bearing, and annular coaxial alignment inside race and outer race are by for example rolling The separation of the rolling elements such as pearl bearing or roller bearing enables inside race and outer race independently to rotate around its axis.Such as Fig. 5 institute Show, central opening 35 can be formed as a part of bearing block 50, and the bearing block 50 includes that the bearing of axially spaced-apart receives spy Sign 51,52.Bearing block 50 can be casting or squeeze metal parts, and bucket half portion 36 is around the casting or squeezes metal parts mould System, and stator 37 can for example be connected by bolt as shown in the figure via the mounting hole in stator mounting flange 39 The casting squeezes on metal parts.Be molded as the ribs 5 being arranged radially of a part of bucket end wall 4 preferably from axis The radial inner end for holding the contact of seat 50 extends to radial outer end at or near the radially outer range of bucket.Such as in Fig. 3 and Fig. 4 In it can be seen that, the ribs 38 being circumferentially arranged is also preferably formed or is molded as a part of end wall 4, further to improve The rigidity of the motor carrying end wall of bucket.

There is end wall 4 including rib 5,38 external, the substantially axial surface 82 faced (most preferably to see in Fig. 3 and 5 To), it is included along the cross-sectional profiles that axis (Fig. 5) passes through the center of opening 35

Central projection point 54, the central projection point 54 are formed directly about the substantial cylindrical of opening 35 " hub ", and be mainly made of some backing materials (preferably plastics) of bearing block 50 and encirclement bearing block,

Ring-shaped depression or recessed area or channel 80, are preferably slightly recessed, center knob point axial direction most The axial lower section (towards roller 22) of outer layer extends, and extends radially outwardly preset distance from center protrusion, and

Outer ring protruding portion 81, the outer ring protruding portion 81 are spaced apart radially outwardly from ring-shaped depression region 80, and from The radially outer range of its radially outwardly toward end wall 4 extends, while the axial direction of the axially outermost layer in ring-shaped depression part 80 Top (far from roller 22) extends.

In the embodiment shown in Fig. 3 to 5, it is preferable that the outer surface 82 of end wall 4 radially part can also be slightly Under the outermost layer of recessed outer ring protrusion 81.Therefore, the outer surface of end wall 4 includes ring-shaped depression region 80, and bottom wall material is It is removed from the sunk area 80.Sunk area 80 has radial width, which is sufficient to accommodate the rotor of motor 3 The radial width of 37 the two of (not shown) and stator, has required gap around it.For example, sunk area 80 is radially-wide Degree can be in about 5cm between about 10cm, but is of course depend upon motor size.The axial depth of sunk area 80 is sufficient to accommodate At least part of the axial height of motor, so that with bucket end wall appearance that motor is simply installed to general planar Face is compared, and bucket and attachment motor combination axial " length " reduce.For example, the axial depth in ring-shaped depression region 80 can be with Between about 3cm and about 10cm.

In order to reinforce or reinforce end wall 4, especially at or near the axial outer end of hub (present support hub end it is some End wall has been removed to accommodate motor 3), stiffening plate 83 is provided.Stiffening plate 83 can be by firm and hard but relatively cheap Material such as metal plate is formed.For example, stiffening plate 83 can be suppressed by the steel plate of such as 1mm to 3mm thickness.

In general, stiffening plate 83 is annular dish type, central opening 84 is by substantial cylindrical or slightly conical butt or cone The collar of shape surrounds, and collar provides the inner margin portion 85 of plate 83.The size of inner edge portion 85 is preferably designed so that in end wall 4 Pressure (or interference) cooperation in the radially outer periphery of center hub protruding portion 91, is connect with providing with the firm zero clearance of hub, Fastener of the connection independent of the transmitting for radial directed load.The main part of stiffening plate from inner edge 85 radially outward Extend, and big including the annular groove or channel 86 in its inner radial range and the outside in its radially outer range Cause the annular flange 87 of the general plane radially extended.When observing axially towards bucket half portion 36, annular groove 86 can be slightly It is raised or recessed, to match the profile in the region 80 of the end wall surface 82 of bucket.

By annular groove 86 be connected to outward flange 87 be it is at least partially radial towards annular surface or wall 88, the annular Surface or wall 88 can have the axial height for example between about 10mm and about 20mm.Preferably, wall 88 is in generally axial direction Extend, therefore completely radial direction.The wall 88 of stiffening plate 83 is usually circumference, but is not circular (when along axis on profile To when observation).When end on observation, the profile or shape (explaining in greater detail below) of wall 88 and track are configured such that When stiffening plate is installed to the end wall 4 of bucket half portion 36, wall 88 at least part or multiple portions of its circumference range with The bucket surface faced radially inwards accordingly or wall 89 contact.The wall 89 of end wall 4 can be the inner surface of circumferential rib, for example, Interface between ring-shaped depression region 80 and outer ring protruding portion 81.

As best seen in fig. 3, when end on observation, the circumferential shapes of wall 88 and 89 may include 360 ° of circumference at least At least one portion extended in a part wherein the radial distance from axis to wall changes with angle position, therefore is It is non-circular.That is, since the first end of (or one) circumferential section and towards the second of circumferential section Opposite end movement is related to radial displacement.It is desirable that the radial displacement is gradual change rather than unexpected/stepped, and with Circumferential distance from first end to second end and increase.For example, as shown, wall or surface 88 and 89 may include in spiral or Arch section on involute surface, wherein radially inner side of the first end in second end.Circumferential section or part can be alternatively It is that or can be the round round or ellipse arc started around axis from surrounding the outwardly extending tangent line of circle of axis Shape.Each circumferential section may include engagement features or element, and the engagement features or element are used to make the end of stiffening plate and bucket The complementary engagement feature or element of wall engage.

The circumference range of wall 88,89 can the single spiral of each freedom or curve composition, the diameter of the single spiral or curve It is steadily increased to distance with angle of circumference/distance around axis.However, embodiment shown in the drawings includes multiple circles Circumferential portion, such as eight circumferential sections, each circumferential section preferably cover the corresponding or equivalent angle model for surrounding axis It encloses (with simplified assembly), thus wall 88 and wall 89 all have corresponding or matched shape.When end on observation, wall 88,89 can be with It is described as about or substantially zigzag, it's similar to saw tooth wave shape is added on round circumference.First circumferential part (radially inner most) point of the starting divided can be by that can be connected to previous circumference with radial directed or slight curving short joining section 93 Partial end (radially) point.Preferably, adjacent beginning and end is not overlapped circumferentially, and is set between them Circumferential gap is set, forms obtuse angle so that being engaged with it between section 93 at the radially end of circumferential section.

The diameter of the radial outside of the wall 88 of stiffening plate should be slightly less than the diameter of the radially inner side of the wall 89 in end wall 4.With This mode, and wall 88,89 has matched shape (circumferential section including identical quantity), can easily realize reinforcement Plate 83 arrives the assembling in the outside of the end wall 4 of bucket.That is, rotating about the axis stiffening plate (or bucket) less by simply enclosing Amount, is pushed axially on end wall, i.e., on the outer surface of bucket center hub protruding portion 91 until stiffening plate is able to use collar 85 Press-fit, ring-shaped depression or concave portion 86 are adjacent or against the surface 80 of bucket end wall 4 and the downside abutment end of outward flange 87 The surface of wall outer ring protrusion 81.After securing the plate to end wall, then for example stator 37 can be attached to by bolt 53 Hub protruding portion 91 or bearing block 50.Stator fastener, which may also pass through, to be arranged in the radially flange (not shown) of stiffening plate Opening, with help secure the plate to bucket.Once rotation bucket 22 and bearing have added in component, the rotor of motor 3 is just It can be attached to axis 33, the result is that motor is at least partly received or is recessed into the thickness of barrel end wall 4.

It is desirable that stiffening plate 83 to be shifted on barrel end wall 4 to the press-fit that will lead between wall 88 and 89 onto, so that in bearing block 50 or hub protruding portion 91 axial outer end at radial force, such as due to imbalance rotate laundry load caused by and it is above-mentioned Those power can be transmitted to the exterior section of end wall 4 by rigid reinforcement plate 83, and the exterior section is than wherein ring-shaped depression region The 80 central endwall region thickness being located at are much and harder.However, the manufacturing tolerance of bucket pedestal half portion 36 and stiffening plate 83 is anticipated Taste the case where average diameter of wall 88 is slightly below or slightly larger than the average diameter of wall 89 will be present, therefore stiffening plate is unlikely to be Press-fit onto end wall 4.

Such case can be easily explained by following through the invention: the mean outside diameter by ensuring to reinforce wooden partition 88 Less than the average diameter of bucket wall 89；By the way that stiffening plate collar 85 is shifted on hub protruding portion 91, wherein by stiffening plate rotate to by Its circumferential section is allowed to be nested in the position in the corresponding circumferential section of barrel wall 89；Then stiffening plate is rotated along direction of rotation, this 88 part of wall is pressed into and is contacted with 89 part of wall.Once being in desired rotation position, the fastener 40 (Fig. 4) of such as screw can It to pass through the opening 92 in flange 87, and is tightened in the hole accordingly positioned in the outer surface for being formed in end wall 4, will reinforce End wall is fixed and be rotationally locked to plate.Opening 92 preferably with the slot of sufficient length, with allow end wall 4 and stiffening plate it Between relative rotation regulated quantity, this needs to compensate the possible range of opposed parts diameter change.Preferably, slot has snail Or involute-type track, to adapt to the position in the hole in manufacturing tolerance and end wall 4 in groove location.Preferably, multiple slot difference It is formed about on the identical pitch circle of plate axis, and has and the same or similar curvature of circumferential wall part, it is assumed that size becomes Change is adapted to by slot, and will closely be corresponded in the wall part of any specific molding basin end wall.

Resulting interface contact line or contact arc between 88 part of circumferential wall of 89 part of circumferential wall is pressed against to ensure For radial force or torque to be transmitted to from axis 33 by stiffening plate 83 to the rigid path of the perimeter of end wall 4, without A large amount of fastener.It should be appreciated that fastener only avoids rotation of the plate relative to bucket end wall, rather than transmitting/transmission diameter To load.Preferably, the curvature or shape of the circumferential section of wall 88 and 89 are roughly the same, adjacent to each other to rotate at them Maximize circumferential lengths/area of contact area when nested position.

It dashes forward as described above, the radial outer region 82 of the outer surface of the end wall 4 of bucket half portion 36 can slightly be recessed into outer ring Out below the horizontal plane in portion 81 (see Fig. 3 and Fig. 5).In this case, the radially outer range of outer ring protruding portion 81 has circle Outer ring protruding portion is connected to radially part 82 of the outer surface of end wall 4 by all side walls 90, the outer peripheral sidewall 90.For example, wall 90 axial height can be about between 5 millimeters and about 15 millimeters.When wall 90 is formed in bucket half portion 36, stiffening plate 83 The periphery of outward flange 87 may be provided with axially extending lip or wall 94.Lip 94 is same far from the flange 87 extending therefrom of wall 88 Side extends.Lip 94 have it is at least partially radial towards surface, the surface preferably substantially or completely facing radially towards (that is, Substantially or completely it is axially directed to) and it is roughly parallel to wall 88 or consistent with wall 88.When end on observation, the wall 90 of end wall 4 Shape substantially can imitate or replicate the shape of wall 89.That is, wall 90 can be by having identical quantity to the addition of wall 89 The radial deflection of fixation of circumferential section formed, it is each adjacent to be separated to by bridging part 95.However, outer wall 90 is not Need the shape of accurately mirror image inner wall 89.For example, outer wall 90 can be shaped as include quantity identical as wooden partition 89 circumferential part Point, but each circumferential section can have closer radius of curvature, so that each circumferential section of outer ring protruding portion 81 Radial width increases from starting end to finishing end, so that each part of outer ring protruding portion 81 is wedge-shaped.

The lip 94 of stiffening plate 83 is preferably shaped in a manner of complementary with the shape of wall 90.Therefore, when outer ring protruding portion When 81 circumferential section has the radial width of constant, outward flange 87 is also in this way, having lip 94 and plate inner wall 88 same shapes, although there is biggish average diameter, so that the circumferential lengths of each circumferential section of plate lip 94 are omited Greater than the circumferential length of each corresponding portion of plate inner wall 88.It should be appreciated that the shape of plate lip 94, is at least constituting circumferential part On the interface/contact surface arc divided, it should the shape of barrel bottom outer wall 90 is corresponded roughly to, although straight with bigger being averaged Diameter, to enable lip 94 to slide on wall 90 when stiffening plate 83 is assembled on barrel end wall 4.

Stiffening plate 83 is rotated as described above be tightened to end wall 4 during, when the radially outer surface of plate inner wall 88 It presses against when on bucket base inner wall 89, the inner surface of lip 94 is inward against in the radially outward face of bucket base outer wall 90 To surface.Therefore, the radial compression between the wall 88 and 94 of stiffening plate of outer ring protruding portion 81, so that compression and stretching radial force The perimeter of end wall 4 both can be more effectively transmitted to from axis 33 or center hub protruding portion 91 via stiffening plate 83.

In order to allow the relative rotation between bucket end wall and stiffening plate 83, the axis of stiffening plate during assembling/fastening The arc length of the corresponding interface wall on bucket should be slightly longer than to the arc length of the circumferential segment of wall.Therefore, in the whole circumference of stiffening plate It can not achieve the engagement with the side wall of outer ring protruding portion 81 in range, but the length and area that engage still are enough to provide big connect Contacting surface product to extend radial axle load, and ensures that the stress in stiffening plate and end wall 4 and flexure are minimum.Stiffening plate 83 can have It is pressed into form therein, especially as shown in Figure 3 in ring-shaped depression region 86, to increase its radial rigidity and deformation resistance.

It is also understood that the end wall outer surface of stiffening plate and bucket half portion 36 may be arranged so that adjacent inner radial wall 88,89 do not engage, and only rotation in the adjacent wall 90,94 of radially outer in stiffening plate when engage.For example, inner radial wall can Be it is cylindrical, there is gap therebetween, once so that spin locking, stiffening plate can be effectively radially pre-tensioner, to increase Add the rigidity of end wall.

In the alternative solution of the embodiment shown in Fig. 3 to Fig. 5, the outer ring protruding portion 81 in end wall 4 can be recessed by annular Enter part replacement, which is recessed below the outer surface of end wall 4 (towards roller 22).When along end on observation, this is recessed Enter part can have it is radially spaced-apart, it is at least partially radial towards side wall, correspond to Fig. 3 and 4 shown in those.In the reality It applies in scheme, stiffening plate can be similarly shaped as stiffening plate 83, and similar collar and annular groove 86 extend radially, but It is that flange 87 will be the axial displacement of the rear side of plate (towards roller 22) (when being checked in the direction of Fig. 3 or Fig. 4).

Alternatively, stiffening plate can be similar to plate 83, but in the outer periphery of plate there is additional " u "-shaped (cross section) annular to prolong Extending portion.U-shaped extension has the radially spaced non-circular side wall of the wall 88 and 94 corresponding to plate 83, and bucket end wall 4 Outer surface will its periphery have respective shapes and positioning recess channel, the channel can axially connect wherein U-shaped channel is received, and allows that stiffening plate is fastened to end wall by subsequent relative rotation.In this form, by stiffening plate Outward flange is connected to the axially extending wall of ring-shaped depression part and the wall 89 of end wall 4 and can be circular and be designed to simple Press-fit interface.

Second preferred embodiment of the invention is described referring now to Fig. 6 and Fig. 7.Bucket half portion 60 in Fig. 6 and Fig. 7 Similar to bucket half portion 36 and including pedestal or end wall 61.Such as previous in preferred embodiment, end wall 61 includes being formed The thin membrane of the inner end wall of bucket and the axially extending ribs 62 of predetermined thickness, to increase the rigidity of the end wall of bucket.It is right In bucket half portion 36, central opening (not shown) is formed to allow to rotate bucket axis and pass through, for being joined to the rotor 63 of motor (noticing that inner stator is hidden by outer rotor).For bucket half portion 36, the center of central hub section or protruding portion on axis is opened Mouth is formed, and the pattern of rib is connected to.Center hub protruding portion may include the bushed bearing of overmolded, which, which provides, is suitable for receiving The annular groove of the outer race of the roller bearing of axial separation.What it is around center hub protruding portion is annular groove (not shown), institute Bottom surface similar to annular groove 80, but its axially extending, radially spaced-apart inner sidewall and outside can be had by stating annular groove What wall was of a generally circular or rounded.In figure 6 and figure 7, the circular passage or groove being formed in the outer surface of end wall 4 be it is sightless, It can be seen that the lateral wall 65 that there is the stiffening plate 64 of ring-shaped depression circular axial to extend.Corresponding circular axial inner sidewall It is also disposed in stiffening plate, in the radially inner side of wall 65, but it is hidden in behind rotor 63.Internal (not shown) and outside 65 The side wall and bottom wall 66 of radial separations constitute ring-shaped depression region or channel 66 in stiffening plate together, around substantial cylindrical Or the collar of slightly conical butt or taper, the inner edge portion of the inner margin portion 85 similar to the first preferred embodiment is provided Point.

As in the first preferred embodiment, during assembly, stiffening plate 64 is crushed on the outer surface of end wall 61, Substantially zero clearance cooperates in the outer radial face of the center hub protruding portion of bucket end wall for inner edges part.Meanwhile stiffening plate In annular groove be pressed into and contacted with the side wall of the annular groove in the end wall of bucket pedestal and bottom wall.Annular recess 66 is extremely Few side wall, but be preferably also possible to bottom wall, can with the adjacent wall sliding contact or engagement in bucket bottom notch region, still At least some radial clearances are it is contemplated that the respective outer wall especially with regard to groove allows bucket diameter to manufacture variation.

Stiffening plate 64 include outward flange 67, the outward flange 67 include extend radially outwardly from the outer axial end of wall 65 it is big Cause flat annulus.Flange 67 be suitable in use against the ring-shaped depression region in the end wall bucket end wall 61 substantially Flat outer surface 69.Flange 67 includes at least one for being formed or being passed through, preferably multiple slots 68.In figure 6 and figure 7, Flange 67 includes 10 slots 68, further, it is preferred that at least some slots 68 are not along around the circular path for reinforcing plate axis.Example Such as, slot can be along the spiral path for surrounding axis, so that outside from radial inner end towards opposite diameter along their length End movement is also related to displacement outside radially from the axis.Alternatively, slot 68 can be along for around bucket/stiffening plate axis Round tangent line is formed even along circle (its center is not on axis) or elliptical arc.Each slot (especially its laterally or Longer side wall/edge) it may include engagement features or element, for being connect with the complementary engagement feature on the end wall that bucket is arranged in It closes.

Being formed in slot 68 in flange 67 has longitudinal (straight or curved) length, the length be approximately greater than groove sidewall it Between their transverse width.The surface 69 of the radially outer general planar of bucket end wall 61 be provided with axially extending protrusion or Prodger 70 (for example, pin or bolt), the protrusion or prodger 70 are axially and radially located around axis, so as in pressure plate 64 pass through slot 68 when being pressed against on the end wall of bucket half portion 60.Axially extending protrusion 70 can have for example in end wall Axial height between about 5mm and about 15mm above circumferential surface is (as described above, " surface " of end wall may include rib 62 Network it is axially outermost).It is each axially extending prominent when being observed when axial direction in the plane perpendicular to the axis or cross section A shape can be had by playing part 70, this is substantially rectangular in shape, including the longer side wall substantially aligned with the longitudinal direction of slot 68. Longer side wall can be straight with it is parallel or themselves can be parallel or congruent arc or spiral, preferably have There is shape identical with side wall/edge of their slot.

In second preferred embodiment, the adjacent wall and bucket of the sunk area 66 in stiffening plate 64 can be received again The diameter change between annular groove in end wall 61.The stiffening plate design of the embodiment is simpler than the embodiment of front to be obtained It is more, but still receive the difference of the relevant diameter dimension of manufacturing tolerance in the sunk area of stiffening plate and bucket pedestal.At this In embodiment, the side wall 65 of the sunk area of plate 64 is not needed when carrying unbalanced axle load via protrusion 70/73 Engagement between slot 68/72 connects the radially outer wall of the sides adjacent of the annular groove in bucket end wall via stiffening plate Contact thicker/stronger radial outer region of barrel end wall.

After stiffening plate 64 to be press-fitted into bucket half portion (and will be in 70 insertion groove 68 of protrusion), bucket half portion 60 Relative rotation between stiffening plate 64 applies some radial preloadings in protrusion, to ensure that it will reliably be transmitted Unbalanced shaft load.With the generation of relative rotation, the side wall/edge or wall/edge and its axially extending protrusion of slot 68 70 side wall or wall is pressed into contact.Preferably, each slot 68 has transverse width (between its longer wall/edge) and prominent It is roughly the same or bigger to play the distance between longer side wall of part 70.

Once being sufficiently engaged between groove sidewall and protrusion side wall is obtained, by the way that fastener 71 is tightened to barrel end wall 61 In mesoporous, the other slots being passed through in stiffening plate 64 can lock the rotation position of stiffening plate relative to bucket.These its Its slot can have shape identical with slot 68 and direction or they can be along the circle for surrounding axis.In order to adapt to bucket The variation of diameter is manufactured, if these other slots are rounded around axis rather than spiral shape, their radial width are answered Be enough it is Chong Die with the desired extent of bucket end wall hole site, and the head diameter of fastener need certainly be greater than groove width.In Fig. 7 also As can be seen that the slot 72 that stiffening plate 64 is formed or punching press is other can be passed through in the base portion in ring-shaped depression region 66, while can Additional axially extending protrusion 73 is formed in ring-shaped depression region in the outer surface of end wall 61.These additional grooves and axis Can be same or similar with slot 68 and protrusion 70 on size, shape and direction to the protruding portion of extension, but it is located at its diameter Inwardly, and additional link position is provided, further to distribute the power or torque of any radial direction.

As in the first preferred embodiment, once stiffening plate is locked in rotation position, wherein stiffening plate is in Rigid connection is formed between heart hub protruding portion and axially extending protrusion part 70, then the compressing force of radial directed or drawing force can be from Axis is transmitted to the thicker radially outer of end wall 61, while keeping total axial length of combined bucket and electric motor assembly minimum Change.

In the further improvement to any of above embodiment, instead of individual casting or squeeze bearing holder component or Hub forming member 50 provides the stiffening plate of support, and stiffening plate itself can have to form bearing block therein or " bushed bearing ". That is, stiffening plate and bearing block may be integrally formed.This integrally formed component can pass through axis after its molding To inserting step, then spin locking step (as described above) is installed to bucket half portion.

In all embodiments as described herein, it should be understood that in plastic injection bucket and pressed-steel stiffening plate Corresponding intrinsic manufacturing tolerance may make it difficult to guarantee that the inward flange of stiffening plate or collar 85 are prominent around the center hub of bucket end wall It the effective close or interference in portion or is pushed and fitted out.Therefore, collar can alternatively be designed as matching around the gap of hub protruding portion It closes, as long as providing the fastening of substitution, the radial inner portion of plate is fixed to the radial inner portion of bucket end wall.For example, can To use multiple screws or other fasteners that the radial inner region of stiffening plate is fixed to bucket end wall hub.

The above-mentioned rigidity for ensuring between stiffening plate and the adjacent surface of bucket end wall radially contact with connection system and Two components with dimensional tolerance variation also can be applied to other situations, wherein the adjacent machine with dimensional tolerance variation Component needs to be rigidly connected, without or with the smallest fastener.For example, in US5809809A or our co-pending In the washing machine of type described in PCT Patent Application PCT/NZ2017/050076.These documents disclose one kind and directly drive Motor, the direct drive motor are effectively axially positioned between a pair of bearings in motor case assembly for noise reduction, the electricity Motivation housing unit is separately manufactured with plastic bucket end wall and for being assembled to the plastic bucket end wall.This technology can be used for In disclosed device, for any of axial inner and axially outer roller bearing or both, provide as described herein Stiffening plate, the stiffening plate also provide shell or support be used for bearing shell.That is, this supporting element or stiffening plate shape At a part of direct drive motor component.Such embodiment is described referring now to Fig. 8.

(feature wherein having been described uses common appended drawing reference) in fig. 8, the latter half 36 of bucket is shown in Between roller 22 and pre-assembled electronic device or component 100.Roller 22 includes support construction, such as casting 34, drum shaft 33 is fixedly prominent from the support construction, the central opening 35 being adapted to pass through in barrel half portion 36, for electric motor assembly 100 Rotor 106 engages.It may include that roller 22 is inserted into bucket half portion 36 that laundry facilities is assembled in the factory of appliance manufacturers Then electric motor assembly 100 is mounted on the axis 33 on the end wall of bucket or the outside of pedestal 4, at least some motor by step Axial height/length of component is contained in the sunk area 80 of bucket end wall.

Alternatively, assembling process may include that electric motor assembly 100 is installed on end wall 4, roller 22 is then inserted into bucket half In portion 36, so that axis 33 extends through via hole 35 and enters in electric motor assembly 100.Electric motor assembly 100 can be by bolt (not Show) it is fixed on axis, which has head diameter axially across the hole in the end of axis, the head diameter foot To be engaged with the inner ring of housing outer surface or the external bearings (as described below) of electric motor assembly.In an alternate embodiment In, axis 33 can be set to a part of electric motor assembly 100, and then be connected to roller when axis is inserted through barrel half portion 36 22 casting 34.It is non-rotating in the shell 103/104 of electric motor assembly regardless of used specific assembling device/program In the case that ground is fixed to bucket end wall, the energization of motor will be rotatably driven roller 22 via axis 33.Although the embodiment It is about shown in front-loading washing machine, but it may be equally applied to muzzle-loading cloth drying machine or washing/dryer or top Dress formula washing machine.In the case where top loading machines, motor is powered can also be using known clutch mechanism selectivity Ground is rotatably driven washing plate or blender in roller 22, selectively rotatably to couple roller and washing plate/blender.

The bearing 101,102 of a pair of (preferably, single to i.e. two) axially spaced-apart is arranged in electric motor assembly 100, To be pivotably supported axis 33.Preferably, bearing is individually to roll (or " rolling element ") bearing, annular coaxial alignment inner seat Circle is separated with outer race by rolling elements such as such as ball bearings or roller bearing, and the rolling element enables inside race and outer race Enough independently rotated around their common axis.Outer bearing or first bearing 101 be arranged at the end axially outward of the axis of axis 33 or Near, and inner bearing or second bearing 102 are also disposed in component 100.Bearing 101,102 passes through corresponding first bearing respectively Seat 103 or second bearing seat 104 or supporting element are located in electric motor assembly 16.Sealing element 105 is installed to second bearing seat 104 And it is radially therefrom and extends inwardly into axis 33, to provide it rotating seal, and it is also another to the bucket end wall 4 around opening 35 Other places provides static seal.Bearing block can be formed by pressed metal plate, the pressed metal plate such as presed-steel plate.In order to increase Add the hardness of electric motor assembly, one or two of bearing block can be harder by such as casting metal (for example, cast steel or aluminium) etc. Gu material is formed, or can be formed by the sufficiently solid engineering plastic materials of injection molding.

From Fig. 8 it will be appreciated that first bearing seat 103 and second bearing seat 104 are generally opposite disc-formed circular structure or plates Shape structure, including placing feature for positioning and accommodating bearing outer race in place for one in bearing 101,102. Bearing block 103,104 extends radially outwardly from their own bearing, and when the connection at their periphery flange 115/116 When, surround the volume that motor component (including outer rotor 106 and inner stator 107) is accommodated.In the embodiment illustrated, One bearing block 103 and second bearing seat 104 be fixed together (with the position to axial of approximately fixed corresponding bearing block feature and The mode of radial position), the outer diameter of rotor and the radial outside (not shown) of fastener can be by first bearing seat and second Bearing block is locked together around their periphery, to form whole monolithic electric motor assembly 100.

At least inner pedestal 104 be formed as usually as above it is in office how stiffening plate described in various embodiments, and water The end wall 4 of bucket is provided with and complementary engagement features those of is arranged in bearing block.As a result, bearing block is not only positioned and is supported Bearing in electric motor assembly 100, but also be effectively transmitted to from drum shaft 33 unbalanced load of radial directed (thin And be therefore weak) perimeter of bucket end wall.In addition, it will be appreciated that this set of electric motor assembly and bucket end wall is advantageous Ground minimizes the axial height (or length) of combined bucket and motor.

In this embodiment, since stiffening plate also serves as bearing block, the aforementioned inner margin portion of stiffening plate is (for engaging bucket End wall in center hub protruding portion outer cylinder surface, the hub protruding portion includes bearing block) be not required.Therefore, exist In the embodiment, stiffening plate includes the central opening passed through for axis, the central opening by annular, be usually spill (109) or convex (110) region surrounds, the region by it is at least partially radial towards surface or the radially outward boundary of wall 111/112 Fixed, the surface or wall may include above-mentioned spin locking circumferential surface, for ensuring effective transmitting of lateral axle load.Scheming In 8, the outside of bearing block 104 it is at least partially radial towards wall 112 therefore can have non-circular profile (when end on observation), Such as relative to profile shown in stiffening plate 83 (for example, aforementioned circle zigzag or helical circumferential part) in Fig. 3.It is similar Ground, the wall 89 of the sunk area 80 of the end wall of the bucket 36 in Fig. 8 can be formed to have similar with respective surfaces shown in Fig. 3 Profile.

Region around each bearing block of central opening thereof includes bearing outer race feature 113/114, the bearing Outer race feature 113/114 is preferably used for receiving and keeping the ring structure of the outer race of corresponding bearing.It is above-mentioned Peripheral flange 115/116 can be arranged around the periphery of at least partially radial wall 111/112 faced, to be conducive to bearing Seat links together.As shown in figure 8, the opening of such as slot 117 can pass through the flange of bearing block and surround the flange of bearing block It is formed, so that the fastener of such as screw can pass through, and enter the end wall 4 of bucket, electric motor assembly 100 is fixed to Bucket, and its rotation position is locked relative to bucket end wall.Bearing block 103/104 can be via across flange groove 117 and upstream end The same fasteners of wall 4 are fixed together, but preferably, and before by electric motor assembly in conjunction with bucket, flange has been fastened Together.

As described above, instead of the bearing block wall 112 facing radially towards (axially extending) and with the bucket of non-circular profile Joined wall 89 in pedestal, the engagement device for showing and describing referring to Fig. 6 and 7 can be bonded to the bearing of Fig. 8 embodiment In seat.That is, in bucket end wall 4 it is at least partially radial towards wall 89 can be it is substantial cylindrical (or vertical It is circular in the cross section of axis).Similarly, bearing block 104 it is at least partially radial towards wall 112 can have class As shape, and be sized to and the gap of the wall 89 of bucket end wall sunk area 80 it is (non-contact) cooperation.

In this embodiment, can be used previously referring to figure 6 and figure 7 in stiffening plate 64 describe setting come realize from Axis to the perimeter of bucket end wall 4 out-of-balance force effective transmitting.Therefore, multiple axially extending prodgers or protrusion 118 can be formed in end wall 4, have the function of the shape similar with protrusion 70 shown in Fig. 6 and 7 and.Bearing block 104 can be with Be formed as including multiple slots 119, the shape of each slot 119 is designed to and is positioned so as to accommodate the protrusion passed through 118.The shape of slot 119 and setting can be similar to the shape and setting of the slot 68 and 72 in Fig. 6 and 7.

Protrusion 118 can be provided only in the pedestal of sunk area 80, with the region that is provided only on bearing block 104 Slot engagement or protrusion 118 in 110 can be provided only on the outside of sunk area around its periphery, so that in bearing block Flange 115/116 in only slot 117 engaged with the protrusion of bucket.It is preferable, however, that in 80 inside of sunk area with outside Protrusion is arranged in portion, engages for the slot in the slot and flange 115/116 in the region 110 with bearing block 104.Therefore, outside Bearing block 103 is also considered the stiffening plate of embodiment according to the present invention, but it is unsuitable for cooperation in bucket end wall Depressed central region in.

Bucket 36 is assembled and is fastened to by the electric motor assembly 100 of the embodiment to be similar to stiffening plate 64 and bucket 60 Cooperation, as explained by reference to Fig. 6 and 7.That is, electric motor assembly 100 is located in the depressed area of end wall 4 In domain 80, the pedestal and electric motor assembly of 104 adjacent recess 80 of bearing block rotate, and axial protrusions 118 are passed through Corresponding slot 119 in bearing block 104 and the slot 117 in the periphery flange of two bearing blocks.Then bucket 36 and electric motor assembly Between relative rotation ensure subsequently that and apply some radial preloads in protrusion, so that it is guaranteed that electric motor assembly and bucket end Wall is securely joined with, and ensures that the contact between protrusion and bearing block is reliable, thus can effectively by axis not Balancing load is transmitted to the perimeter of bucket end wall from bearing block.With the progress of relative rotation, the side wall of slot 117/119 or The side wall or wall of wall and its axially extending protrusion 118 are pressed into contact.Once obtaining between groove sidewall and prodger side wall Be sufficiently engaged with, by the way that fastener 71 is tightened in one or more holes, can relative to bucket lock electric motor assembly 100 Rotation position.The axial external surface of trough end wall 4 is formed in periphery flange 115/ by slot 117 or other holes/slot (not shown) In 116.

The stator 11 of motor assembly is fastened to one in bearing block, for example, stator may be mounted to second bearing seat 5.It (or is individually helically wound as it is well known, stator is formed as a pile thin automatic adjustment steel lamination Lamination), there is the lamination pole core partially radially extended from annular base (it is electronic radially outward to become outer-rotor type Machine) and the stator winding that is wound on the pole core of stacking.Stator core can pass through plastic processing frame overmolded, the plastic processing frame tool Have the radially inner side of the stacking with central opening inwardly projecting general planar, curved or conical butt disk Installation section, axis may pass through the central opening and (referring to our open WO2012087156A, be used for exemplary plastic stator The embodiment of frame).

Rotor 106 by its hub at the axial position between first bearing 101 and second bearing 102 rotatably Fixed to drum shaft 33.Complimentary engagement tooth, key or spline feature may be provided at the inner surface two of drum shaft 33 and rotor hub On person, driving torque is transmitted to drum shaft 33 and roller 22 from rotor.Can provide equipment be assembled to rotation bucket and Position and alignment of the rotor in electric motor assembly are kept before axis.For example, as shown in figure 8, the inside race of bearing 101/102 can It is provided with axially extending protruding portion (or annular), is engaged for axial projection complementary in rotor hub or annular element.

It should be appreciated that direct drive motor component 100 includes at least motor rotor 106, motor stator 107, one To bearing 101/102 and bearing block 103/104.Although exemplified preferred embodiment includes electronic rectifier or brushless external rotor Formula motor, but other types of motor include inner-rotor type motor, are alternatively incorporated in motor assembly.

Claims

1. a kind of stiffening plate suitable for reinforcing the end wall of the bucket of washing machine, comprising:

Main part, the main part extend radially outwardly into the radially outside of the stiffening plate from the inner edge portion The radial extension of edge, the main part forms ring-shaped depression region, and the ring-shaped depression region is relative to the main part Radially outer range it is axially displaced, and

At least one engagement features, the engagement features are arranged in the body region, suitable for the end wall with the bucket The interaction of at least one complementary characteristic, for the stiffening plate to be fixed to the upper, the engagement features or multiple features are enclosed It is circumferentially extending around axis, follow a path, wherein from axis to the radial distance of specific engagement features with from The first end of specific engagement feature towards the second end of specific engagement feature circumferential distance and increase.

2. stiffening plate according to claim 1, wherein at least one described engagement features include straight or curved surface Or edge, the surface or edge are at least partly axially extending.

3. stiffening plate according to claim 1 or 2, wherein the radially outer range of the main part includes outward flange, The outside range of the diameter of the outward flange from the sunk area extends radially outward.

4. stiffening plate according to claim 3, plurality of engagement features are set, are located in the only sunk area Or only in any one of the outward flange, or it is located on both the depressed section and the outward flange.

5. stiffening plate according to any one of the preceding claims, plurality of identical engagement features are set, rule Ground is spaced apart the radial distance about apart from the axis or is regularly spaced apart with the radial distance apart from the axis.

6. stiffening plate according to claim 5, wherein the multiple engagement features include apart from the first of the axis First group of the first engagement features of radial distance, second group of multiple identical second engagement features are also set, and surround institute Axis is stated to be circumferentially spaced, each of described second engagement features be respectively positioned on apart from the axis it is common second it is radial away from From place, the second common radial distance is different from first radial distance.

7. stiffening plate according to any one of the preceding claims, wherein at least one described engagement features include slot, institute It states slot and extends through the main part.

8. stiffening plate according to any one of the preceding claims, wherein radial outside wall forms the recessed of the main part The radially outer range in region is fallen into, there is the radial outside wall at least partly axially extending surface to connect the sunk area It is connected to the radially outer range of the main part.

9. stiffening plate according to claim 8, wherein the radial outside wall includes the surface of at least one circumferentially extending Part, each surface portion are provided which engagement features, and the engagement features, which are preferably set up, is shaped to serrate profile, institute At least part whole circumference that serrate profile is stated around the axis extends.

10. stiffening plate according to claim 8 or claim 9, wherein the radial outside wall includes the first wall, at least partly earth's axis It is also formed in the main part to the second wall of extension, and around at least part of whole circumference of axis week Extend to ground, second wall is spaced apart radially outwardly by annular flange region and first wall, first wall and institute The public side for stating the second wall from the flange region is axially extending.

11. stiffening plate according to claim 10, wherein second wall includes at least partly axially extending annular table Face, the annular surface have the surface portion of at least one circumferentially extending, and the surface portion provides engagement features, wherein from The axis to particular surface part radial distance as the first end from the particular surface part is towards the specific table The circumferential distance of the second end of face part and increase.

12. stiffening plate according to any one of the preceding claims, wherein the inner margin portion includes interior collar, it is described interior Collar at least partly extends far from the main part in the axial direction, and the diameter for forming the ring-shaped depression region is inside Side wall.

13. stiffening plate according to any one of the preceding claims, is formed by metal plate.

14. a kind of direct drive motor component, the component include:

First bearing supporting element and second bearing supporting element, one outer race in the bearing are located in the first bearing In each of supporting element and the second bearing supporting element, the first bearing supporting element and the second bearing supporting element It links together,

Rotor, the rotor include rotor hub, the rotor hub have opening across its opening, in the rotor hub with A pair of coaxial bearing alignment, and be axially positioned between the pair of bearing, and

Stator, non-one be rotatably fixed in the bearing supports of the stator,

Wherein at least one of described bearing supports include stiffening plate according to any one of the preceding claims.

15. a kind of washing machine, comprising:

Casing,

Bucket, the bucket are connected to the casing via suspension, and the bucket has end wall, and the end wall, which has, to be surrounded The opening that axis is formed, the axially external of the end wall of the bucket have around the ring-shaped depression region formed therein that is open,

Rotatable drum, the rotatable drum are mounted in bucket, to be rotated around the axis,

Drive shaft, the drive shaft are connected to the roller on the axis, and the drive shaft passes through in the end wall of the bucket The opening,

Wherein direct drive motor component according to claim 14 is joined to described by stiffening plate bearing supports The outside of bucket end wall is at least partially axially located in the ring-shaped depression region by the drive shaft.

16. washing machine according to claim 15, wherein the end wall of the bucket is provided at least one complementary engagement Feature, for being engaged at least one engagement features described in the stiffening plate bearing supports.

17. washing machine according to claim 16, wherein at least one engagement features of the stiffening plate bearing supports Slot including the bearing supports by the stiffening plate, and at least one described complementary engagement feature includes from the end wall Protrusion, wherein the protrusion extends axially through the slot.

18. washing machine according to claim 16, wherein at least one described engagement features include the ring radially faced outwards Shape side wall, the annular sidewall radially faced outwards form the recess of the stiffening plate main part of the stiffening plate bearing supports The outside range of the diameter in region, at least one described complementary engagement feature include the ring-shaped depression area in the bucket end wall The annular wall faced radially inwards on the radial outside in domain.

19. washing machine described in any one of 5 to 18 according to claim 1, wherein the electric motor assembly and bucket end wall it Between engagement by the relative rotation of the electric motor assembly and bucket end wall realize, at least one fastener pass through the reinforcement board shaft Supporting element is held, and enters the bucket end wall, to lock the rotation position of the electric motor assembly relative to the bucket end wall.

20. a kind of washing machine, comprising:

Casing,

Bucket, the bucket are connected to casing via suspension, and the bucket has end wall, and the end wall, which has, surrounds axis The opening of formation, the axially external of the end wall of the bucket have around the ring-shaped depression region formed therein that is open, and

Stiffening plate according to any one of claim 1 to 13 is attached to the outside of the end wall, the stiffening plate Ring-shaped depression region is located in the ring-shaped depression region in the end wall of the bucket, at least one engagement of the stiffening plate Feature is contacted and is engaged with the complementary engagement feature of the end wall of the bucket, and

Motor, the motor have the rotor being mounted in the drive shaft.

21. washing machine according to claim 20, wherein the stiffening plate is suitable for joining by initial relative axial movement It is connected to the bucket, so that the stiffening plate touches the outside of the bucket, the sunk area of the stiffening plate is in the water In the ring-shaped depression region in the end wall of bucket, relative rotary motion is carried out then around the axis, this leads to described add The contiguous complementarity engagement features of the contact of bucket end wall described at least one engagement features radial compression of strong plate.

22. according to washing machine described in claim 20 or claim 21, wherein the axially external of the end wall includes surrounding The center annular protrusion of the opening, the annular groove are located at the radial outside of the center annular protrusion, the reinforcement The inner edge portion of plate is contacted with the radial outside wall of the annular center protrusion.

23. the washing machine according to any one of claim 20 to 22, wherein either still existing in the sunk area The radial outside of the sunk area, at least one complementary engagement feature of the end wall of the bucket include axially external from its Axially extending protruding portion, there is the stiffening plate at least one to pass through it and the slot that is formed, and including at least one engagement Feature, the protruding portion pass through slot.

24. washing machine according to claim 23, wherein the axially external fastener that is provided with of the end wall of the bucket connects Opening is received, each fastener receptacle opening is suitable for axially aligning with the slot formed by the stiffening plate.

25. the washing machine according to any one of claim 20 to 22, wherein the ring-shaped depression area of the end wall of the bucket Domain has the peripheral wall faced radially inwards, and the peripheral wall faced radially inwards has the surface portion of at least one circumferentially extending, institute The surface portion for stating circumferentially extending forms at least one described complementary engagement feature, and each particular surface part all has a wheel Exterior feature, wherein from the axis to the radial distance of the particular surface part with the first end court from the particular surface part Increase to the circumferential distance of the second end of the particular surface.

26. washing machine according to claim 25, wherein when along end on observation, the table of at least one circumferentially extending The profile of face part is the zigzag fashion that at least part of the whole circumference around the axis extends.