CN101427445B - Motor for direct driving type washing machine - Google Patents

Motor for direct driving type washing machine Download PDF

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Publication number
CN101427445B
CN101427445B CN2005800217262A CN200580021726A CN101427445B CN 101427445 B CN101427445 B CN 101427445B CN 2005800217262 A CN2005800217262 A CN 2005800217262A CN 200580021726 A CN200580021726 A CN 200580021726A CN 101427445 B CN101427445 B CN 101427445B
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CN
China
Prior art keywords
main shaft
rotor frame
rotary main
supporting member
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN2005800217262A
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Chinese (zh)
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CN101427445A (en
Inventor
安仁根
朴容奭
郑然秀
姜东佑
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LG Electronics Inc
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LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020040095070A external-priority patent/KR101079094B1/en
Priority claimed from KR1020040095068A external-priority patent/KR101079092B1/en
Priority claimed from KR1020040097546A external-priority patent/KR101128792B1/en
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority claimed from PCT/KR2005/003409 external-priority patent/WO2006080759A2/en
Publication of CN101427445A publication Critical patent/CN101427445A/en
Application granted granted Critical
Publication of CN101427445B publication Critical patent/CN101427445B/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The present invention relates to motors each having a rotor with a metal rotor frame, a metal rotation shaft, and a rotation shaft supporting member connected between the rotor frame and the rotation shaft for transmission of a rotating power from the rotor to the rotation shaft, and, more particularly, to a motor in which the rotation shaft supporting member is constructed of a metal and an insulating material, for insulating the rotation shaft from the rotor frame while enhancing a structural strength of the rotation shaft supporting member. The motor for preventing current leakage to a rotation shaft, having a rotor with a rotor frame of metal, a rotation shaft of metal, and a rotation shaft supporting member connected between the rotor frame and the rotation shaft to transmit a rotation power from the rotor to the rotation shaft, the rotation shaft supporting member includes a supporting portion of metal for receiving and supporting the rotation shaft, and an insulating portion for electric insulation between the rotor frame and the rotation shaft.

Description

Prevent to the motor of main shaft electric leakage
Technical field
The present invention relates to motor, each has rotor with the metallic rotator framework this motor, the metal rotation main shaft, be connected in the rotary main shaft supporting member that is used between rotor frame and the rotary main shaft from rotor to the rotary main shaft transmitting rotary power, and more specifically, relate to a kind of motor, wherein the rotary main shaft supporting member is made of metal and insulating material, be used for when strengthening rotary main shaft supporting member structural strength, making the insulation of rotary main shaft and rotor frame.
Background technology
The present invention relates to motor, each has this motor, rotor with the metallic rotator framework, the metal rotation main shaft is connected between rotor frame and the rotary main shaft, is used for the rotary main shaft supporting member from rotor to the rotary main shaft transmitting rotary power, and more specifically, relate to a kind of motor, wherein the rotary main shaft supporting member is made up by metal and insulating material, is used for making the insulation of rotary main shaft and rotor frame when strengthening rotary main shaft supporting member structural strength.
[background technology]
Fig. 1 is the drum type washing machine structural representation of having used the motor of correlation technique, and wherein the motor among Fig. 1 is the direct-coupled type motor, has the rotary main shaft as the laundry main shaft of direct rotary washing machine inner casing.At this direct-coupled type motor for washing machine, the supporting member that is used for supporting laundry main shaft is laundry main shaft supporting member.
As shown in the figure, the drum type washing machine setting has, and inner casing ' I ' and outer shell ' O ' are for the foul of cleaning clothes; The laundry main shaft ' S ' that has serrated portion ' S1 ' in the rear end is used for the transmitting rotary power for cleaning clothes, with just/opposite spin inner casing ' I '; And motor ' M ', for generation of rotary power and be passed to the laundry main shaft ' S '.
Motor ' M ' arranges to have, fastening and be fixed to the stator 1 of outer shell rear wall section, this stator 1 have be integrally formed therewith, inside is equipped with bearing ' B ' bearing support divides 11; Be installed in stator 1 outside, by the rotor 2 that polarity difference rotates, have rotor frame 21, this rotor frame 21 has with connecting hole 22 and the fastener hole 23 of predetermined space in central distribution, and a plurality of ventilation holes 26 in basal surface; With main shaft supporting member 3, have in basal surface connection ridge 32 and connecting hole 33 with spaced at predetermined intervals, the two is corresponding with the connecting hole 22 in the rotor frame 21, with the serrated portion 31 that is arranged in this main shaft supporting member 3, be used for to laundry main shaft ' S ' transmit from rotor 2 and the rotary power that comes and keep bearing supporting part 11 and rotor frame 21 between the gap.
Operation to the motor of correlation technique is described.
When using power to rotor 1, motor ' M ' is rotated by the rotary power that produces by the electromagnetic action between stator and the rotor, and laundry main shaft supporting member 3 connects and is fixed to the rotor frame 21 of rotor 2, and meanwhile, serrated portion ' S1 ' by the serrated portion 31 in the laundry main shaft supporting member and laundry main shaft ' S ' bottom, from rotor 2 to laundry main shaft ' S ' transmitting rotary power, the inner casing ' I ' that is connected on the top with laundry main shaft ' S ' is subject to the time spent of doing of this rotary power and also can rotates.
In this example, because bearing support divide 11 and rotor frame 2 between laundry main shaft supporting member 3 made by insulating resin, even so in the destroyed situation of the insulated part of the rotor frame 21 of the insulated part of the coiler part of stator ' I ' and/or rotor 2, there is not electric current to flow to laundry main shaft ' S ' yet, to prevent that electric current from flowing to the laundry water that is contained in the outer shell ' O ', prevent thus owing to the carelessness on the safety causes Accidental occurrence.
And laundry main shaft supporting member 3 reduces the vibrations that are passed to laundry main shaft ' S ' from motor ' M ', and laundry main shaft supporting member 3 also reduces vibrations and the noise of outer shell.
Yet aspect intensity, the laundry main shaft supporting member of the correlation technique that is formed from a resin has relatively poor durability.
Namely, in the situation that only simply with resin manufacture laundry main shaft supporting member, although this laundry main shaft supporting member with only compare with metal manufacturing laundry main shaft supporting member, very satisfactory aspect insulation property and reduction vibrations, but because relatively poor strength of parts, this laundry main shaft supporting member is very not satisfactory aspect durability.
And, in the situation that only with resin manufacture laundry main shaft supporting member, its shaping processing part thickness is excessive, to obtain long cooling time after injection moulding, and cause the difference of cooling rate between the shaping processing part, causing difficulty aspect the laundry main shaft supporting member precise forming.
Summary of the invention
Technical problem
The purpose of this invention is to provide a kind of motor, flow to rotary main shaft even it can block electric current---being used for being the laundry main shaft in the direct-coupled type motor situation of washing machine---in the destroyed situation of the stator coil part of motor and the insulation between the rotor frame, also can prevent owing to the carelessness on the safety causes Accidental occurrence, can prevent effectively that motor vibration is passed to the laundry main shaft, and can improve the durability of rotary main shaft supporting member, this rotary main shaft supporting member is laundry main shaft supporting member in the situation of the direct connecting motor that is used for washing machine.
Technical scheme
Realize of the present invention purpose be used to preventing to the motor of rotary main shaft leakage current by providing a kind of, this motor has the rotor with the metallic rotator framework, the metal rotation main shaft and be connected between fast rotor frame and the rotary main shaft with the rotary main shaft supporting member from rotor to the rotary main shaft transmitting rotary power, wherein this rotary main shaft supporting member comprises be used to holding and supporting the metal support part of rotary main shaft and be used for making the insulated part of electric insulation between rotor frame and the rotary main shaft.
If motor of the present invention is the direct-coupled type motor in the washing machine, then when the rotary main shaft supporting member was laundry main shaft supporting member, rotary main shaft directly was connected with the laundry main shaft, or formed with the laundry integrated spindle axis.
Insulated part makes rotary main shaft and this supporting part electric insulation of a part of holding supporting part, so that rotary main shaft and rotor frame electric insulation.
By with rotary main shaft or the supporting part insert molding technique as the gripping object in the mould, described insulated part can form one with rotary main shaft or supporting part.
The rotary main shaft supporting member further comprises be used to the fastening part that is anchored on rotor frame, and wherein fastening part preferably stretches out and folding in the periphery direction from supporting part with radial direction.
Preferably, rotor frame has connecting hole, and fastening part has for the connection ridge that is placed on respectively connecting hole, is used for being connected between guided rotor framework and the fastening part, and helps fastening.
Can be with the tubular insulated part that arranges between the appropriate section of rotary main shaft and supporting part.
Insulated part has inner peripheral surface and outer peripheral surface, the two all has serrated portion, rotary main shaft has the outer surface that ribbonsaw teeth divides, the serrated portion of this rotary main shaft is corresponding with the serrated portion on the inner surface of insulated part, and supporting part also has the inner surface with serrated portion, and the serrated portion of this supporting part is corresponding with the serrated portion on the insulated part outer surface.
Because insulated part makes supporting part and rotor frame electric insulation, so rotor frame and rotary main shaft electric insulation.
By with the insert molding technique of supporting part as the gripping object in the mould, insulated part is formed around supporting part, insulated part and supporting part are made of plastics integratedly, and are positioned between supporting part and the rotor frame.
Selectively, insulated part can form and assemble with supporting part with separating component.
If insulated part and supporting part assembling, preferably, supporting part has installing hole, and insulated part has the installation ridge corresponding with installing hole.This installing hole and installation ridge guide the installation of insulated part on supporting part, and help the connection of the two.
Preferably, be being connected between rotary main shaft supporting member and the rotor frame to be used for strengthening bonding strength by what realize being connected between supporting part and the rotor frame.
If securing member is metal bolts, then because electric current can flow between rotor frame and supporting part by bolt, so preferably insulated part further prevents this current flowing.
For this reason, insulated part can form cover to be used for fastening bolt, be formed on rotor frame pass internal surface of hole, or cover for fastening bolt, at the internal surface of hole that passes of supporting part, prevent that thus electric current from flowing between rotor frame and supporting part.If needed, between bolt head and supporting part, insulating washer is set, is used for electric insulation.
Yet, by not using the securing member with electrical insulation characteristics to connect rotary main shaft supporting member and rotor frame with metal bolts, also can prevent current flowing.Securing member with electrical insulation characteristics can be to have the bolt that the material of insulation characterisitic is made, and such as plastics or resin, or preferably, the material that has insulation characterisitic in the metal bolts coating is such as plastics.
By realize the electric insulation of supporting part and rotor frame with insulated part, thereby realize the electric insulation between rotary main shaft and the rotor frame, in this case, preferably, insulated part has the connection ridge, and rotor frame has the connecting hole corresponding with this connection ridge.
Beneficial effect
By making the insulation of rotor frame and rotary main shaft, transmit electric current to cut off to rotary main shaft, this rotary main shaft is the laundry main shaft in the situation of the direct-coupled type motor that is used for washing machine, even when the insulation between the rotor frame of stator coil part and rotor is destroyed, the present invention also can prevent owing to the carelessness on the safety causes Accidental occurrence.
And the foldable structure of metal support member and fastening part can strengthen the strength and stiffness of laundry main shaft supporting member when saving material.
Simultaneously, because insulated part can reduce vibrations and noise, thus cause the vibrations of rotor frame to reduce, thus product improved for user's reliability.
Description of drawings
Fig. 1 illustrates the driver element in the washing machine of the motor of having used correlation technique;
Fig. 2 is first preferred embodiment of the invention;
Fig. 3 is the zoomed-in view of ' A ' part among Fig. 2;
Fig. 4 is the perspective view of metal support part among Fig. 3;
Fig. 5 is second preferred embodiment of the invention;
Fig. 6 is insulated part perspective view among Fig. 5;
Fig. 7 is third preferred embodiment of the invention;
Fig. 8 is ' A ' part zoomed-in view among Fig. 7;
Fig. 9 is four preferred embodiment of the invention;
Figure 10 is fifth preferred embodiment of the invention;
Figure 11 is sixth preferred embodiment of the invention;
Figure 12 is ' A ' part zoomed-in view among Figure 11;
Figure 13 is seventh preferred embodiment of the invention;
Figure 14 is ' A ' part zoomed-in view among Figure 13.
Embodiment
As a preferred embodiment of the present invention, will be used to drum type washing machine to motor therein, thereby the embodiment that consists of the direct-coupled type motor in washing machine is described in detail.
Fig. 2 is the first preferred embodiment of the present invention, and Fig. 3 is the zoomed-in view of ' A ' part among Fig. 2.
As shown in the figure, the driver element that is applied to drum type washing machine of the present invention comprises the laundry main shaft ' S ' with the serrated portion ' S1 ' that is positioned at rearward end, be used for to inner casing ' I ' transmitting rotary power, and be used for to laundry main shaft ' S ' transmitting rotary power and produce the motor ' M ' of rotary power.
Referring to Fig. 2 and 3, motor ' M ' comprises the stator 1 (seeing Fig. 1) that is fixed on the outer shell ' O ', and this stator 1 has the bearing support that bearing ' B ' has been installed and divides 11; With the rotor 2 that is installed in stator 1 outside, be used for being rotated by the difference of polarity, this rotor 2 has rotor frame 21, and this rotor frame has the connecting hole 22 that is provided at predetermined intervals and fastener hole 23, from the hub portion of central protrusion, a plurality of ventilation holes 26 on basal surface and cooling fan 25, have a ribs 27 of osculum therebetween; With laundry main shaft supporting member 3, be used for keeping bearing support divide 11 and rotor frame 21 between the gap.Laundry main shaft supporting member 3 is connected with rotor frame and all is connected with securing member 4.
Laundry main shaft supporting member 3 comprises, wherein with the metal support part 3a of serrated portion 31, with radial direction from the coupling part 3b that this supporting part stretches out, and insulator 7, this insulator 7 is as the insulated part that is used for providing electric insulation between laundry main shaft ' S ' and supporting part 3a.
Referring to Fig. 3, insulator 7, i.e. insulated part, by forming such as plastics or the such insulating material of resin, and can be integrally formed with laundry main shaft or supporting part 3a by insert molding technique.
Insulator 7 is formed on enough large zones of laundry main shaft ' S ' along its length, is used for realizing insulating in the connecting portion office of this main shaft.
Doing washing between main shaft supporting member 3 and the bearing ' B ', having insulating washer ' W ' at laundry main shaft rear side, be used for preventing that bearing from contacting with laundry main shaft supporting member.
Supporting part 3a is by making such as the such metal of aluminium, and coupling part 3b is stretching out and can have warp architecture from supporting part 3a in the radial direction, this warp architecture along the periphery direction have repeat towards upper surface and towards under the surface.
Supporting part 3a has for the serrated portion 31 that connects as the insulator 7 of insulated part, and coupling part 3b has the coupling part 3b that connects towards rotor frame 21 connecting ridge 32.
Simultaneously, rotor frame 21 has the connecting hole 22 corresponding with the connection ridge 32 on the laundry main shaft supporting member 3, with fastener hole 23 corresponding with hole 300 in laundry main shaft supporting member 3.
Laundry main shaft supporting member 3 roughly has disc-like shape in plane graph, but this shape is not limited in this.
Operation to motor is described.
By making securing member 4 pass hole 300 in the laundry main shaft supporting member 3, the main shaft supporting member 3 of will doing washing is connected with rotor frame, and being fastened to fastener hole 23 in the rotor frame, status is, connects ridge 32 and inserted in the connecting hole 22 in the rotor frame 21.
Because the collapsed shape of the coupling part of laundry main shaft supporting member 3 can reduce waste of material, and compares with the plastics of correlation technique or the laundry main shaft supporting member of resin, the supporting part 3a of metal can strengthen the Rigidity and strength of laundry main shaft supporting member 3.
Simultaneously, referring to Fig. 2, the formation of insulator, a kind of insulating material, as a part integrally formed with laundry main shaft ' S ', be connected with laundry main shaft supporting member with enough length, flow to laundry main shaft ' S ' even when having electric current to flow to rotor frame 21, also can prevent electric current.
Even because the insulated part of the rotor frame 21 of the insulated part of the coil of stator 1 and rotor 2 has leakage, there is electric current to flow to rotor frame 21, because the formation of insulator, a kind of insulating material, as a part integrally formed with laundry main shaft ' S ', with be connected to rotor frame 21 on laundry main shaft supporting member 3 be connected, cut off being electrically connected between laundry main shaft supporting member 3 and the main shaft ' S ' thereby cut, also can no longer allow current delivery to the main shaft of doing washing, prevent in advance thus owing to the carelessness on the safety causes Accidental occurrence.
And, when vibrations are passed to laundry main shaft S from motor ' M ', insulator, i.e. insulated part can damping vibration, thereby effectively reduces the intensity of vibrations and noise.
Because a plurality of ventilation holes 26 and cooling fan 25 are positioned at the basal surface of rotor frame 21, form cooling fan 25 by the relevant portion with the vertical direction curved bottom surface, ventilation hole 26 is formed naturally, make motor ' M ' heat radiation, because the cooling effect that driver element can have is better than the cooling scheme that only relies on ventilation hole 26 in the correlation technique, so can improve the performance of motor ' M ', and prolong the life-span of motor ' M '.
Ribs 27 between ventilation hole 26 and the cooling fan 25, wherein with osculum 28, the laundry water that can will drop on the rotor frame 21 is gathered in ribs 27 places, and makes laundry water pass through osculum 28 discharges.
The laundry water that drops on the rotor frame 21 is discharged to the washing machine outside, can prevent from allowing thus the cleaning performance of washing machine is remained on optimum state because the laundry water that is evaporated by the temperature of motor ' M ' penetrates into the misoperation that is caused in the motor ' M '.
It will be understood by those skilled in the art that without departing from the spirit and scope of the present invention, can do various modifications and improvement to the present invention.Thus, as long as those modifications made for the present invention and change fall in claims and the equivalent scope thereof, they just should be contained by the present invention.
Namely, although insulator 7 can form by insert molding and laundry integrated spindle axis, other forming methods also are feasible.
For example, with reference to figure 5 and 6, insulator 7 can be used as a separation parts, form and have serrated portion S1 on its outer peripheral surface with tubular, and insulator 7 is pressed into the main shaft coupling part that is engaged to laundry main shaft ' S '.
Certainly, preferably, be inserted in the tubular insulator on the outer peripheral surface of laundry main shaft ' S ', also have serrated portion S2 in this insulator inner peripheral surface, be used for preventing insulator idle running.
Simultaneously, if insulator 7, i.e. insulated part spreads all over the whole length of the main shaft of doing washing and forms, and then can save insulating washer ' W '.
Pattern of the present invention
Fig. 7 is the 3rd preferred embodiment of the present invention, and Fig. 8 is the zoomed-in view of ' A ' part among Fig. 7.
Referring to Fig. 8, laundry main shaft supporting member 103 comprises, serrated portion 131 is used for putting into laundry main shaft supporting member 103 and the main shaft ' S ' of will doing washing and is fixed to laundry main shaft supporting member 103; Metal support part 103b is being located in the radial direction on serrated portion 131 outsides, and is having be used to the fastening part that is secured on the rotor frame 21; And insulated part, be used for making electric insulation between supporting part 130b and the rotor frame 21.
As shown in the figure, the insulating cell 103a of insulated part for separating with supporting part 103b is used for making between rotor frame 21 and the support unit 103b and electric insulation between securing member 4 and the support unit 103b.
Certainly, liner 103a can form one or not form one with supporting part 130b with supporting part 130b.
Liner 103a comprise integrally formed with liner 103a and from it towards rotor frame 21 projections be connected ridge 132, with from the upper projection of liner 103a and the installation ridge 135 that is consistent with installing hole 134 the supporting part 130b.
Liner 103a comprises the protruding 130b that passes hole 140b that passes among the supporting part 103b, is used for making between securing member 4 and the supporting part 130b insulating.
Simultaneously, rotor frame 21 has the connecting hole 122 that ridge 132 is consistent that is connected with laundry main shaft supporting member 103.
And, rotor frame 21 have with laundry main shaft supporting member 103 in pass the corresponding fastener hole 123 in hole 133.Fastener hole 123 is formed by the projection of protruding during rotor frame in compacting, and each fastener hole 123 has screw thread in inner peripheral surface.
In the head of each securing member 4 and laundry main shaft supporting member 103 each passed between the inlet surface in hole 133 insulating washer ' W ' is set.Certainly, can omit insulating washer ' W ' in the zone that protruding 130b is enough to work.
Serrated portion 131 is formed on the inner surface of hollow circular cylinder.
Supporting part 103b or liner 103a are dish type roughly, but the shape of supporting part needn't be restricted to dish type.
Operation to said structure is described.
When laundry main shaft supporting member 103 was installed on the rotor frame, the connection ridge 132 on the liner 103a was arranged in the connecting hole 122 in the rotor frame wheel hub, until liner 103a is near the inner surface of rotor frame 21.
Subsequently, supporting part 103b is installed on the liner 103a.
In this example, installment work is so carried out: the installation ridge 135 on the liner 103a is coupled in the installing hole 134 among the supporting part 103b, and the protruding 103b on the liner 103a is positioned at the inside that each passes hole 140b.
In this state, securing member 4 passes respectively and passes hole 133 among the protruding 130b, and is fastened to respectively on the fastener hole 123, is connected with the firm of rotor frame 21 to finish main shaft supporting member 103.
By liner 103a being set as insulated part, even there is electric current to flow to rotor frame 21, do not have electric current yet and flow to laundry main shaft ' S '.
Namely; the present embodiment can form by the separating component made from metal and plastics (or resin) laundry main shaft supporting member; thereby protection user; two kinds of separating components can strengthen on the whole intensity and insulating capacity is provided, even also can cut off the electric current that is passed to laundry main shaft ' S ' in order to there is electric current to flow to rotor frame 21.
Thus in more detail, even the insulated part of the rotor frame 21 of the insulated part of the coiler part of stator 1 and rotor 2 is destroyed, cause electric current to flow to rotor frame 21, but because between rotor frame 21 and metal support part, insulating cell 103a is arranged, and between securing member 4 and metal support part 103b, also have the protruding 130b of insulating washer ' W ' and insulating cell, make rotor frame and laundry main shaft electric insulation, so also can prevent owing to the carelessness on the safety causes the energising accident, this accident occurs owing to there being electric current to flow to the laundry main shaft.
And, because insulating cell 103a has damping effect, so can reduce from motor next vibrations and noise.
Simultaneously, Fig. 9 is another preferred embodiment, wherein insulating cell 103a has the protruding 133a for protection contact, to realize being arranged on the bolt ' B ' in the fastener hole 180 in the rotor frame and to be fixed on nut ' N ' on this bolt and the insulation between the rotor frame 21.
Simultaneously, at the opposite side of rotor frame 21, there is positioning convex 160, and liner 103a has ridge 170, and each this ridge 170 has location hole 150a, is used for holding positioning convex 160, and supporting part 103b has hole 150b, is used for holding the ridge 170 on the liner 103a.
Figure 10 is another preferred embodiment, is wherein forming fastener hole 123 in the rotor frame 21 with opposite direction embodiment illustrated in fig. 8.
Figure 11 is the structure of driving unit of having used in the washing machine of another preferred embodiment of the present invention, and Figure 12 is zoomed-in view of ' A ' part among Figure 11.
Referring to Figure 11 and 12, laundry main shaft supporting member 203 comprises, main shaft placement and be fixed in wherein serrated portion 231 is used for do washing; Be positioned at the metal support part 203b of serrated portion 231 outsides with radial direction, have be used to being fastened to and pass hole 233 on the rotor frame 21; With for the insulated part that makes insulation between supporting part 203b and the rotor frame 21.
The parts of insulated part 203b for being separated with supporting part 203b, this insulated part 203b comprises insulating cell 203a, this insulating cell 203a have with supporting part in pass hole 233 and fastener hole 223 corresponding pass hole 234.
Insulation securing member 204 passes passing among the supporting part 203b and passes hole 234 among hole 233 and the insulating cell 203a, and is fastened to the fastener hole 223 in the rotor frame 21.
The connection ridge 232 that insulating cell 203a further comprises is integrally formed, protrude towards rotor frame 21, and rotor frame 21 have with insulating cell 203a on be connected the connecting hole 222 that ridge 232 is consistent.
Insulation securing member 204 can be that for example, metal bolts has coating plastics (or resin) insulating coating 240 on its outer surface, or can integrally be formed by plastics (or resin).
Simultaneously, supporting part 203b or insulating cell 203a have the disc-like shape under the plan view, but supporting part 203b or insulating cell 203a are not limited to dish type.
Operation to this structure is described.
When rotor frame 21 being installed laundry main shaft supporting member 203, connect ridge 232 and be arranged in the connecting hole 222 in rotor frame 21 wheel hubs, until the inner surface of liner 203a and rotor frame 21 is approaching.
In this state, supporting part 203b fits among the liner 203a, pass hole 234 and securing member 204 passes passing among the supporting part 203b among hole 233 and the liner 203a, and be fastened to respectively fastener hole 223, the main shaft supporting member 203 of will doing washing thus is connected securely with rotor frame 21.
In this example, referring to Figure 11, because liner 203a laundry main shaft ' S ' contact with rotor frame 21, and owing to securing member 204 and unique indirect joint passage cut off mutually, even so that there is electric current to flow to rotor frame 21, there is not electric current to flow to laundry main shaft ' S ' yet.
Figure 13 is the structure of driving unit schematic diagram of having used in the drum type washing machine of another preferred embodiment of the present invention, and Figure 14 is zoomed-in view of ' A ' part among Figure 13.
Referring to Figure 14, the laundry main shaft supporting part 303 in the present embodiment comprises main shaft standing part 330a, is used for fixing on it laundry main shaft; Be positioned at the metal support part 303a of main shaft standing part 330a outside with radial direction, be used for being connected with rotor frame 21; With cover the lip-deep insulated part 303b of supporting part 303a, be used for making rotor frame 21 and laundry main shaft electric insulation.
Insulated part 303b further comprise with this insulated part 303b do as a whole, be connected ridge 332 towards what rotor frame 21 protruded.
In this example, preferably, by with the insert molding technique of supporting part as the gripping object in the mould, insulated part 303b and supporting part 303a do as a whole formation.
Simultaneously, rotor frame 21 has the connecting hole 322 corresponding with the connection ridge 332 on the laundry main shaft supporting member 303.
Rotor frame 21 have with laundry main shaft supporting member 303 in pass the corresponding fastener hole 323 in hole 33.
Simultaneously, if needed, between each fastener hole surface in supporting part 303a and the securing member that is fastened on it insulating washer ' W ' is set, for preventing that electric current from flowing through metal bolts.
As already described, the present embodiment has the following advantages.
Connect ridge 332 and be arranged in the connecting hole 322 in rotor frame 21 wheel hubs, and laundry main shaft supporting member 303 is near the inner surface of rotor frame 21.
In this state, securing member 4 passes and passes hole 333 in the laundry main shaft supporting member, and is fastened to respectively fastener hole 323, and the main shaft supporting member of will doing washing thus is connected securely with rotor frame 21.
In this example, referring to Figure 13, be same as the insulated part 303b of insulating material, the laundry main shaft ' S ' not with rotor frame 21 electric connections.Thus, even there is electric current to flow to rotor frame, there is not electric current to flow to laundry main shaft ' S ' yet.
It will be understood by those skilled in the art that without departing from the spirit and scope of the present invention and can do various modifications and change to the present invention.Thus, be intended to make the present invention contain those drop in claims and the equivalent scope thereof, various modifications made for the present invention and change.
Industrial Applicability A
The present invention relates to motor, each has rotor with the metallic rotator framework this motor, the metal rotation main shaft, be connected between rotor frame and the rotary main shaft, be used for the rotary main shaft supporting member from rotor to the rotary main shaft transmitting rotary power, and more specifically, relate to a kind of motor, wherein the rotary main shaft supporting member is made up by metal and insulating material, be used for when strengthening rotary main shaft supporting member structural strength, making the insulation of rotary main shaft and rotor frame.
The present invention is by making rotary main shaft---the laundry main shaft in the direct connecting motor situation in the washing machine---with the rotor frame electric insulation, even in the destroyed situation of the insulation between the rotor frame of the stator coil in motor part and rotor, also can cut off the electric current that is passed to rotary main shaft, so can prevent owing to the carelessness on the safety causes Accidental occurrence.
And the foldable structure of metal support member and fastening part allows when saving material, strengthens the strength and stiffness of laundry main shaft supporting member.
Simultaneously, thus because insulated part can reduce the vibrations that vibrations and noise have reduced rotor frame, product improves for user's reliability.

Claims (15)

1. motor, be used for preventing to the rotary main shaft leakage current, has the rotor with the metallic rotator framework, the metal rotation main shaft, and be connected between described rotor frame and the described rotary main shaft, with the rotary main shaft supporting member from described rotor to described rotary main shaft transmitting rotary power, this rotary main shaft supporting member comprises:
The metal support part is used for holding and supporting described rotary main shaft; With
Insulated part is used for making electric insulation between described rotor frame and the described rotary main shaft, and wherein said insulated part is made of plastics, and has tubular in shape, and is positioned between described rotary main shaft and the described metal support part; And wherein insulated part makes the described rotary main shaft part and described supporting part electric insulation of being held by described supporting part, so that described rotor frame and described rotary main shaft electric insulation;
Described rotary main shaft supporting member comprises be used to the fastening part that is fastened to described rotor frame, and wherein said fastening part stretches out and folding in the periphery direction from described supporting part with radial direction.
2. motor according to claim 1, wherein said rotary main shaft are the inner casing that is connected to described washing machine, the laundry main shaft that is used for this inner casing of rotation.
3. motor according to claim 1, wherein said insulated part and described rotary main shaft or integrally formed with described supporting part.
4. motor according to claim 1, wherein said rotor frame has connecting hole, and described fastening part has for the connection ridge that is placed on respectively described connecting hole.
5. motor according to claim 1, wherein by with described rotary main shaft or described supporting part as the insert molding technique of gripping object, described insulated part is formed around described rotary main shaft.
6. motor according to claim 1, wherein said insulated part has inner surface and outer surface, the two each have serrated portion, described rotary main shaft has the outer surface that ribbonsaw teeth divides, the serrated portion of this rotary main shaft is corresponding with the serrated portion on the inner surface of described insulated part, and described supporting part also has the inner surface with serrated portion, and the serrated portion of this supporting part is corresponding with the serrated portion on the described insulated part outer surface.
7. motor, be used for preventing to the rotary main shaft leakage current, has the rotor with the metallic rotator framework, the metal rotation main shaft, and be connected between described rotor frame and the described rotary main shaft, with the rotary main shaft supporting member from described rotor to described rotary main shaft transmitting rotary power, this rotary main shaft supporting member comprises:
The metal support part is used for holding and supporting described rotary main shaft; With
Insulated part is used for making electric insulation between described rotor frame and the described rotary main shaft, wherein because described insulated part makes described supporting part and described rotor frame electric insulation, so described rotor frame and described rotary main shaft electric insulation; And
Described rotor frame or described supporting part have for putting into wherein the hole of passing as the bolt of securing member, thereby described rotor frame is fastened to described rotary main shaft supporting member, and described insulated part forms the described inner surface that passes the hole of covering, is used for preventing that described bolt and the described inner surface that passes the hole from electrically contacting.
8. motor according to claim 7, wherein pass through the insert molding technique of described supporting part as gripping object, described insulated part is formed around described supporting part, make described insulated part be made of plastics and be positioned between described supporting part and the described rotor frame.
9. motor according to claim 7, wherein by described insulated part is assembled on the described supporting part, described insulated part is positioned between described supporting part and the described rotor frame.
10. motor according to claim 9, wherein said supporting part has installing hole, and described insulated part has the installation ridge corresponding with described installing hole.
11. motor according to claim 7 wherein tightens together described rotary main shaft supporting member and rotor frame with the securing member with electrical insulation characteristics.
12. motor according to claim 11, wherein said securing member comprises metal bolts, and this bolt has coating insulation coating thereon.
13. motor according to claim 11, wherein said securing member comprises the bolt that is formed by insulating material.
14. motor according to claim 7, wherein said rotor frame has connecting hole and described insulated part has the connection ridge corresponding with described connecting hole.
15. motor according to claim 7 further comprises the insulating washer between bolt head and described supporting part.
CN2005800217262A 2004-11-19 2005-10-13 Motor for direct driving type washing machine Active CN101427445B (en)

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
KR1020040095070A KR101079094B1 (en) 2004-11-19 2004-11-19 Motor for direct driving type washing machine
KR10-2004-0095069 2004-11-19
KR1020040095070 2004-11-19
KR1020040095069A KR101079093B1 (en) 2004-11-19 2004-11-19 Motor for direct driving type washing machine
KR1020040095069 2004-11-19
KR10-2004-0095068 2004-11-19
KR1020040095068A KR101079092B1 (en) 2004-11-19 2004-11-19 Motor for direct driving type washing machine
KR10-2004-0095070 2004-11-19
KR1020040095068 2004-11-19
KR1020040097546A KR101128792B1 (en) 2004-11-25 2004-11-25 Motor for direct driving type washing machine
KR10-2004-0097546 2004-11-25
KR1020040097546 2004-11-25
PCT/KR2005/003409 WO2006080759A2 (en) 2004-11-19 2005-10-13 A motor in which an electric leakage to a shaft is prevented

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CN101427445A CN101427445A (en) 2009-05-06
CN101427445B true CN101427445B (en) 2013-01-02

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KR102549738B1 (en) * 2021-08-09 2023-06-30 주식회사 마그네틱파워트레인 Method for manufacturing Pole piece and inner rotor for magnetic gear

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4263711A (en) * 1977-09-05 1981-04-28 Matsushita Electric Industrial Co., Ltd. Method of making armature of double insulation construction
CN1466257A (en) * 2002-06-11 2004-01-07 乐金电子(天津)电器有限公司 Rotor structure for washing machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100451717B1 (en) 1999-09-09 2004-10-08 엘지전자 주식회사 Full automatic washing machine
KR100442925B1 (en) 2001-03-29 2004-08-02 주식회사 엘지이아이 A driving force transfer member for washing machine
KR100434302B1 (en) 2004-01-06 2004-06-05 엘지전자 주식회사 direct drive motor in washing machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263711A (en) * 1977-09-05 1981-04-28 Matsushita Electric Industrial Co., Ltd. Method of making armature of double insulation construction
CN1466257A (en) * 2002-06-11 2004-01-07 乐金电子(天津)电器有限公司 Rotor structure for washing machine

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CN101427445A (en) 2009-05-06
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