US20060059955A1 - Washing machine - Google Patents
Washing machine Download PDFInfo
- Publication number
- US20060059955A1 US20060059955A1 US11/143,488 US14348805A US2006059955A1 US 20060059955 A1 US20060059955 A1 US 20060059955A1 US 14348805 A US14348805 A US 14348805A US 2006059955 A1 US2006059955 A1 US 2006059955A1
- Authority
- US
- United States
- Prior art keywords
- rotor
- rotary shaft
- reinforcing member
- washing machine
- insertion hole
- 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.)
- Abandoned
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Classifications
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
- H02K21/222—Flywheel magnetos
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Definitions
- Apparatuses consistent with the present invention relate to a washing machine, and, more particularly, to a washing machine having an improved fixing structure between a rotary shaft and a rotor of a driving motor, whereby the rotor is easily and quickly fixed to the rotary shaft.
- a rotary tub When laundry is washed by a washing machine, a rotary tub is rotated in alternating directions. When the washed laundry is dewatered by the washing machine, on the other hand, the rotary tub is rotated only in one direction at a high speed. Consequently, the rotary tub is rotatably disposed in a water tub, in which wash water is filled, and at the outside of the water tub is disposed a driving motor to rotate the rotary tub.
- a washing machine is disclosed in U.S. Pat. No. 6,510,716, which provides a water tub; a rotary tub rotatably disposed in the water tub while being attached to a rotary shaft extending through the water tub for washing the laundry; and a driving motor disposed at the outside of the water tub for rotating the rotary shaft and the rotary tub.
- the driving motor includes a stator mounted to an outer surface of the water tub; and a rotor disposed around the stator while being connected to the rotary shaft. In an opening formed at the center of the rotor is disposed a connection member connected between the rotor and the rotary shaft for transmitting a rotating force of the rotor to the rotary shaft.
- connection member In the washing machine disclosed in the above-mentioned patent, however, the structure of the connection member is very complicated such that the rotary shaft is connected to the rotary tub with a coupling force necessary for the rotor to effectively rotate the rotary shaft and the rotary tub. Also, the connection member is fixed to the rotor by a plurality of bolts, which increases the manufacturing costs of the connection member and time necessary to assemble the connection member.
- the rotary shaft is not directly connected to the rotor, i.e., the rotary shaft is connected to the rotor via the connection member.
- the connection member it is difficult to coaxially fix the rotor to the rotary shaft, and therefore, noise and vibration due to eccentricity between the rotor and the rotary shaft are generated when the rotor and the rotary shaft are rotated.
- washing machine having a structure in which a rotor of a driving motor is directly connected to a rotary shaft.
- the present invention provides a washing machine comprising: a water tub; a rotary tub disposed in the water tub; a rotary shaft mounted to the rotary tub and extending through the water tub; a rotor directly connected to the end of the rotary shaft; and a reinforcing member attached to the rotor to increase the strength of the rotor.
- the rotor may have a polygonal insertion hole
- the rotary shaft may have a polygonal inserting protrusion formed at the end thereof, the inserting protrusion of the rotary shaft being inserted through the insertion hole of the rotor.
- the reinforcing member may also have a polygonal through-hole corresponding to the insertion hole of the rotor, the inserting protrusion of the rotary shaft being inserted through the through-hole of the reinforcing member.
- the reinforcing member also has a plurality of fitting protrusions extending vertically from the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively, such that the reinforcing member is easily attached to the rotor.
- An exemplary embodiment of the washing machine comprises: a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from the outside of rotor. Further, the washing machine may comprise a pad disposed between the reinforcing member and a head of the fixing bolt.
- FIG. 1 is a longitudinal sectional view showing a washing machine according to an exemplary embodiment of the present invention
- FIG. 2 is an enlarged sectional view showing a rotary shaft connected to a rotary tub and a driving motor to rotate the rotary shaft;
- FIG. 3 is an exploded perspective view showing the fixing structure between a rotor of the driving motor and the rotary shaft;
- FIG. 4 is an assembled perspective view of FIG. 3 ;
- FIG. 5 is a sectional view taken along the line V-V of FIG. 4 .
- FIG. 1 is a longitudinal sectional view showing a washing machine according to an exemplary embodiment the present invention
- FIG. 2 is an enlarged sectional view showing a rotary shaft connected to a rotary tub and a driving motor to rotate the rotary shaft.
- the washing machine comprises a housing 10 forming the appearance of the washing machine; a water tub 11 disposed in the housing 10 for storing wash water; a rotary tub 12 rotatably disposed in the water tub 11 for washing laundry; and a door 13 hingedly attached to the front surface of the housing 10 .
- a water supply hose 14 to supply wash water to the water tub 11 and a detergent supply unit 15 to supply detergent to the water tub 11 .
- a drain hose 16 and a drain pump 17 are disposed at the lower part of the housing 10 to discharge wash water in the water tub 11 out of the housing 10 .
- a driving motor 30 to rotate the rotary tub 12 in alternating directions.
- a rotary shaft 20 having one end connected to the rotary tub 12 and the other end connected to the driving motor 30 , to transmit a rotating force of the driving motor 30 to the rotary tub 12 .
- the rotary shaft 20 extends through the water tub 11 .
- the driving motor 30 comprises a stator 31 having a ring-shaped magnetic core 32 attached to the outer surface of the water tub 11 and a coil 33 wound on the magnetic core 32 ; and a rotor 40 disposed around the stator 31 while being connected to the rotary shaft 20 .
- the rotary shaft 20 having one end connected to the rotary tub 12 and the other end connected to the rotor 40 , is supported by bearing members 22 disposed at the water tub 11 .
- FIG. 3 is an exploded perspective view showing the fixing structure between the rotor 40 of the driving motor 30 and the rotary shaft 20
- FIG. 4 is an assembled perspective view of FIG. 3
- FIG. 5 is a sectional view taken along the line V-V of FIG. 4 .
- the rotor 40 comprises a disk-shaped base 41 , to which the rotary shaft 20 is connected; an outer circumferential extension 42 vertically extending from a rim of the base 41 ; and a plurality of magnets 43 attached to the outer circumferential extension 42 while being spaced a predetermined distance from each other.
- an insertion hole 44 Through the center of the base 41 of the rotor 40 is formed an insertion hole 44 , through which the rotary shaft is inserted.
- a plurality of rotary blades 45 and heat sink holes 46 are disposed in the radial direction thereof while the rotary blades 45 and the heat sink holes 46 are alternately arranged in the circumferential direction thereof.
- an inserting protrusion 21 which has the same shape and size as the insertion hole 44 such that the inserting protrusion 21 is inserted through the insertion hole 44 of the base 41 .
- the insertion hole 44 and the inserting protrusion 21 are formed in the shape of a polygon such that the rotary shaft 20 can be rotated along with the rotor 40 when the rotor 40 is rotated after the inserting protrusion 21 is inserted through the insertion hole 44 , i.e., such that the rotor is prevented from rotating relative to the rotary shaft.
- the insertion hole 44 and the inserting protrusion 21 are approximately or substantially formed in the shape of a rectangle with two small sides being curved.
- a reinforcing member 50 is attached to the outer surface of the base 41 .
- the reinforcing member 50 is formed in the shape of a disk. At the center of the reinforcing member 50 is formed a through-hole 51 having the same shape and size as the insertion hole 44 of the rotor 40 , through which the inserting protrusion 21 of the rotary shaft 20 is inserted.
- a plurality of fitting protrusions 52 which vertically extend, such that the reinforcing member 50 is easily attached to the base 41 of the rotor 40 .
- a plurality of fitting holes 47 are formed at the base 41 of the rotor 40 , into which the fitting protrusions 52 of the reinforcing member 50 are fitted.
- the reinforcing member 50 When the fitting protrusions 52 of the reinforcing member 50 are fitted into fitting holes 47 of the base, respectively, from the outside of the rotor 40 , the reinforcing member 50 is easily attached to the outer surface of the rotor 40 while the through-hole 51 of the reinforcing member 50 is aligned with the insertion hole 44 of the base 41 .
- the reinforcing member 50 is attached to the rotor 40 , as described above, such that the strength of the disk-shaped base 41 of the rotor 40 is increased, whereby the rotary shaft 20 and the rotary tub 12 , which are much heavier than the rotor 40 , are smoothly rotated by the rotor 40 .
- a fixing bolt 53 is threadly coupled into the rotary shaft 20 through the through-hole 51 of the reinforcing member 50 and the insertion hole 44 of the rotor 40 from the outside of the reinforcing member 50 .
- a pad 54 is disposed between the head of the fixing bolt 53 and the reinforcing member 50 .
- the pad 54 has a size larger than the through-hole 51 of the reinforcing member 50 and the insertion hole 44 of the rotor 40 . Consequently, the head of the fixing bolt 53 presses the pad 54 , as the fixing bolt 53 is threadly coupled into the rotary shaft 20 , and therefore, the rotor 40 and the reinforcing member 50 are securely fixed to the rotary shaft 20 .
- the inserting protrusion 21 of the rotary shaft 20 may be forcibly fitted into the through-hole 51 of the reinforcing member 50 through the insertion hole 44 of the rotor 40 , and the fitting protrusions 52 of the reinforcing member 50 may be forcibly fitted into the fitting holes 47 of the base 41 of the rotor 40 , respectively.
- the fixing bolt 53 and the pad 54 are not necessary.
- the fixing bolt 53 with the pad 54 fitted thereon is threadly coupled into the rotary shaft 20 through the through-hole 51 and the insertion hole 44 from the outside of the reinforcing member 50 .
- the rotor 40 and the reinforcing member 50 are securely fixed to the rotary shaft 20 .
- the rotor of the driving motor is directly connected to the rotary shaft. Consequently, the present invention has the effect of reducing manufacturing costs and assembling time. Also, the rotor is coaxially fixed to the rotary shaft, and therefore, noise and vibration are not generated when the rotor and the rotary shaft are rotated.
- the strength of the rotor at the position where the rotor is fixed to the rotary shaft is increased by the reinforcing member that is easily attached to the rotor, and therefore, the rotary shaft and the rotary tub are smoothly rotated by the rotor.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A washing machine having a rotor directly connected to a rotary shaft. The driving motor includes a stator mounted to an outer surface of a water tub, and a rotor disposed around the stator while being directly connected to the rotary shaft, which is connected to a rotary tub. An insertion hole is formed at a center of the rotor, and a plurality of fitting holes are formed around the insertion hole. At an end of the rotary shaft is formed an inserting protrusion, which corresponds to the insertion hole. The rotor is fixed to the rotary shaft by inserting the inserting protrusion through the insertion hole. To the rotor is attached a reinforcing member having a plurality of fitting protrusions, which vertically extend such that the fitting protrusions are fitted into the fitting holes of the rotor, respectively, such that the strength of the rotor is increased.
Description
- This application claims the benefit of Korean Patent Application No. 2004-76577, filed on Sep. 23, 2004 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.
- 1. Field of the Invention
- Apparatuses consistent with the present invention relate to a washing machine, and, more particularly, to a washing machine having an improved fixing structure between a rotary shaft and a rotor of a driving motor, whereby the rotor is easily and quickly fixed to the rotary shaft.
- 2. Description of the Related Art
- When laundry is washed by a washing machine, a rotary tub is rotated in alternating directions. When the washed laundry is dewatered by the washing machine, on the other hand, the rotary tub is rotated only in one direction at a high speed. Consequently, the rotary tub is rotatably disposed in a water tub, in which wash water is filled, and at the outside of the water tub is disposed a driving motor to rotate the rotary tub.
- A washing machine is disclosed in U.S. Pat. No. 6,510,716, which provides a water tub; a rotary tub rotatably disposed in the water tub while being attached to a rotary shaft extending through the water tub for washing the laundry; and a driving motor disposed at the outside of the water tub for rotating the rotary shaft and the rotary tub.
- The driving motor includes a stator mounted to an outer surface of the water tub; and a rotor disposed around the stator while being connected to the rotary shaft. In an opening formed at the center of the rotor is disposed a connection member connected between the rotor and the rotary shaft for transmitting a rotating force of the rotor to the rotary shaft.
- In the washing machine disclosed in the above-mentioned patent, however, the structure of the connection member is very complicated such that the rotary shaft is connected to the rotary tub with a coupling force necessary for the rotor to effectively rotate the rotary shaft and the rotary tub. Also, the connection member is fixed to the rotor by a plurality of bolts, which increases the manufacturing costs of the connection member and time necessary to assemble the connection member.
- Furthermore, the rotary shaft is not directly connected to the rotor, i.e., the rotary shaft is connected to the rotor via the connection member. As a result, it is difficult to coaxially fix the rotor to the rotary shaft, and therefore, noise and vibration due to eccentricity between the rotor and the rotary shaft are generated when the rotor and the rotary shaft are rotated.
- Therefore, it is an exemplary aspect of the invention to provide a washing machine having a structure in which a rotor of a driving motor is directly connected to a rotary shaft.
- It is another exemplary aspect of the invention to provide a washing machine that is capable of increasing the strength of the rotor of the driving motor with a simple structure.
- In accordance with one aspect, the present invention provides a washing machine comprising: a water tub; a rotary tub disposed in the water tub; a rotary shaft mounted to the rotary tub and extending through the water tub; a rotor directly connected to the end of the rotary shaft; and a reinforcing member attached to the rotor to increase the strength of the rotor.
- The rotor may have a polygonal insertion hole, and the rotary shaft may have a polygonal inserting protrusion formed at the end thereof, the inserting protrusion of the rotary shaft being inserted through the insertion hole of the rotor. The reinforcing member may also have a polygonal through-hole corresponding to the insertion hole of the rotor, the inserting protrusion of the rotary shaft being inserted through the through-hole of the reinforcing member. The reinforcing member also has a plurality of fitting protrusions extending vertically from the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively, such that the reinforcing member is easily attached to the rotor.
- An exemplary embodiment of the washing machine comprises: a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from the outside of rotor. Further, the washing machine may comprise a pad disposed between the reinforcing member and a head of the fixing bolt.
- Additional aspects and/or features of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
- Aspects and features of the invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, of which:
-
FIG. 1 is a longitudinal sectional view showing a washing machine according to an exemplary embodiment of the present invention; -
FIG. 2 is an enlarged sectional view showing a rotary shaft connected to a rotary tub and a driving motor to rotate the rotary shaft; -
FIG. 3 is an exploded perspective view showing the fixing structure between a rotor of the driving motor and the rotary shaft; -
FIG. 4 is an assembled perspective view ofFIG. 3 ; and -
FIG. 5 is a sectional view taken along the line V-V ofFIG. 4 . - Reference will now be made in detail to exemplary embodiments of the present invention. The embodiments described below explain the present invention with reference to the figures.
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FIG. 1 is a longitudinal sectional view showing a washing machine according to an exemplary embodiment the present invention, andFIG. 2 is an enlarged sectional view showing a rotary shaft connected to a rotary tub and a driving motor to rotate the rotary shaft. - As shown in
FIG. 1 , the washing machine comprises ahousing 10 forming the appearance of the washing machine; awater tub 11 disposed in thehousing 10 for storing wash water; arotary tub 12 rotatably disposed in thewater tub 11 for washing laundry; and adoor 13 hingedly attached to the front surface of thehousing 10. - At the upper part of the
housing 10 are disposed awater supply hose 14 to supply wash water to thewater tub 11 and adetergent supply unit 15 to supply detergent to thewater tub 11. At the lower part of thehousing 10 are disposed adrain hose 16 and adrain pump 17 to discharge wash water in thewater tub 11 out of thehousing 10. - At the outside of the
water tub 11 is disposed a drivingmotor 30 to rotate therotary tub 12 in alternating directions. Between therotary tub 12 and thedriving motor 30 is disposed arotary shaft 20, having one end connected to therotary tub 12 and the other end connected to the drivingmotor 30, to transmit a rotating force of the drivingmotor 30 to therotary tub 12. Therotary shaft 20 extends through thewater tub 11. - As shown in
FIG. 2 , thedriving motor 30 comprises astator 31 having a ring-shapedmagnetic core 32 attached to the outer surface of thewater tub 11 and acoil 33 wound on themagnetic core 32; and arotor 40 disposed around thestator 31 while being connected to therotary shaft 20. Therotary shaft 20, having one end connected to therotary tub 12 and the other end connected to therotor 40, is supported by bearingmembers 22 disposed at thewater tub 11. - The fixing structure between the
rotary shaft 20 and therotor 40 will be described hereinafter with reference to FIGS. 3 to 5. -
FIG. 3 is an exploded perspective view showing the fixing structure between therotor 40 of thedriving motor 30 and therotary shaft 20,FIG. 4 is an assembled perspective view ofFIG. 3 , andFIG. 5 is a sectional view taken along the line V-V ofFIG. 4 . - As shown in
FIG. 3 , therotor 40 comprises a disk-shaped base 41, to which therotary shaft 20 is connected; an outercircumferential extension 42 vertically extending from a rim of thebase 41; and a plurality ofmagnets 43 attached to the outercircumferential extension 42 while being spaced a predetermined distance from each other. - At the center of the
base 41 of therotor 40 is formed aninsertion hole 44, through which the rotary shaft is inserted. Around theinsertion hole 44 are disposed a plurality ofrotary blades 45 andheat sink holes 46 in the radial direction thereof while therotary blades 45 and theheat sink holes 46 are alternately arranged in the circumferential direction thereof. - At the end of the
rotary shaft 20 is integrally formed aninserting protrusion 21, which has the same shape and size as theinsertion hole 44 such that theinserting protrusion 21 is inserted through theinsertion hole 44 of thebase 41. - Preferably, but not necessarily, the
insertion hole 44 and theinserting protrusion 21 are formed in the shape of a polygon such that therotary shaft 20 can be rotated along with therotor 40 when therotor 40 is rotated after the insertingprotrusion 21 is inserted through theinsertion hole 44, i.e., such that the rotor is prevented from rotating relative to the rotary shaft. In this embodiment, theinsertion hole 44 and theinserting protrusion 21 are approximately or substantially formed in the shape of a rectangle with two small sides being curved. - In order to effectively transmit rotating torque of the driving
motor 30 to therotary shaft 20 and therotary tub 12 through the disk-shaped base 41 of therotor 40, a reinforcingmember 50 is attached to the outer surface of thebase 41. - The reinforcing
member 50 is formed in the shape of a disk. At the center of the reinforcingmember 50 is formed a through-hole 51 having the same shape and size as theinsertion hole 44 of therotor 40, through which theinserting protrusion 21 of therotary shaft 20 is inserted. - At the edge of the reinforcing
member 50 are formed a plurality offitting protrusions 52, which vertically extend, such that the reinforcingmember 50 is easily attached to thebase 41 of therotor 40. At thebase 41 of therotor 40 are formed a plurality offitting holes 47, into which thefitting protrusions 52 of the reinforcingmember 50 are fitted. - When the
fitting protrusions 52 of the reinforcingmember 50 are fitted intofitting holes 47 of the base, respectively, from the outside of therotor 40, the reinforcingmember 50 is easily attached to the outer surface of therotor 40 while the through-hole 51 of the reinforcingmember 50 is aligned with theinsertion hole 44 of thebase 41. - The reinforcing
member 50 is attached to therotor 40, as described above, such that the strength of the disk-shaped base 41 of therotor 40 is increased, whereby therotary shaft 20 and therotary tub 12, which are much heavier than therotor 40, are smoothly rotated by therotor 40. - In order to more stably fix the
rotor 40 and the reinforcingmember 50 to therotary shaft 20, afixing bolt 53 is threadly coupled into therotary shaft 20 through the through-hole 51 of the reinforcingmember 50 and theinsertion hole 44 of therotor 40 from the outside of the reinforcingmember 50. Between the head of thefixing bolt 53 and the reinforcingmember 50 is disposed apad 54. - The
pad 54 has a size larger than the through-hole 51 of the reinforcingmember 50 and theinsertion hole 44 of therotor 40. Consequently, the head of the fixingbolt 53 presses thepad 54, as the fixingbolt 53 is threadly coupled into therotary shaft 20, and therefore, therotor 40 and the reinforcingmember 50 are securely fixed to therotary shaft 20. - Alternatively, the inserting
protrusion 21 of therotary shaft 20 may be forcibly fitted into the through-hole 51 of the reinforcingmember 50 through theinsertion hole 44 of therotor 40, and thefitting protrusions 52 of the reinforcingmember 50 may be forcibly fitted into the fitting holes 47 of thebase 41 of therotor 40, respectively. In this case, the fixingbolt 53 and thepad 54 are not necessary. - When the inserting
protrusion 21 of therotary shaft 20 is inserted through theinsertion hole 44 formed at the center of thebase 41 of therotor 40, and thefitting protrusions 52 of the reinforcingmember 50 are fitted into the correspondingfitting holes 47 of the base 41 from the outside of therotor 40, as shown inFIGS. 4 and 5 , the insertingprotrusion 21 of therotary shaft 20 is inserted through the through-hole 51 of the reinforcingmember 50. - Subsequently, the fixing
bolt 53 with thepad 54 fitted thereon is threadly coupled into therotary shaft 20 through the through-hole 51 and theinsertion hole 44 from the outside of the reinforcingmember 50. As a result, therotor 40 and the reinforcingmember 50 are securely fixed to therotary shaft 20. When the drivingmotor 30 is operated in this state, therotor 40, whose strength is increased by the reinforcingmember 50, is rotated, and therefore, therotary shaft 20 and therotary tub 12 are smoothly rotated. - As apparent from the above description, the rotor of the driving motor is directly connected to the rotary shaft. Consequently, the present invention has the effect of reducing manufacturing costs and assembling time. Also, the rotor is coaxially fixed to the rotary shaft, and therefore, noise and vibration are not generated when the rotor and the rotary shaft are rotated.
- Furthermore, the strength of the rotor at the position where the rotor is fixed to the rotary shaft is increased by the reinforcing member that is easily attached to the rotor, and therefore, the rotary shaft and the rotary tub are smoothly rotated by the rotor.
- Although exemplary embodiments of the present invention has been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (13)
1. A washing machine comprising:
a water tub;
a rotary tub disposed in the water tub;
a rotary shaft which is mounted to the rotary tub and extends through the water tub;
a rotor directly connected to an end of the rotary shaft; and
a reinforcing member attached to the rotor which increases the strength of the rotor.
2. The washing machine according to claim 1 , wherein the rotor has a polygonal insertion hole, and the rotary shaft has a polygonal inserting protrusion formed at the end thereof, the inserting protrusion of the rotary shaft being inserted through the insertion hole of the rotor.
3. The washing machine according to claim 2 , wherein the reinforcing member has a polygonal through-hole corresponding to the insertion hole of the rotor, the inserting protrusion of the rotary shaft being inserted through the through-hole of the reinforcing member.
4. The washing machine according to claim 2 , wherein the reinforcing member has a plurality of fitting protrusions which extend vertically from the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively, such that the reinforcing member is easily attached to the rotor.
5. The washing machine according to claim 1 , further comprising: a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from outside of the rotor.
6. The washing machine according to claim 5 , further comprising: a pad disposed between the reinforcing member and a head of the fixing bolt.
7. The washing machine according to claim 1 , further comprising: a stator mounted to an outer surface of the water tub while the stator is opposite to the rotor.
8. A washing machine comprising:
a water tub; a rotary tub disposed in the water tub; a rotary shaft mounted to the rotary tub while extending through the water tub; and a driving motor disposed at an outside of the water tub to rotate the rotary shaft, the driving motor comprising,
a stator mounted to an outer surface of the water tub; a rotor disposed opposite to the stator; and a reinforcing member attached to the rotor to increase the strength of the rotor,
the rotor having an insertion hole formed in a shape to prevent the rotor from rotating relative to the rotary shaft, and
the rotary shaft having an inserting protrusion formed in a shape corresponding to that of the insertion hole, the inserting protrusion being inserted through the insertion hole, such that the rotary shaft is rotated along with the rotor.
9. The washing machine according to claim 8 , wherein the insertion hole of the rotor and the inserting protrusion of the rotary shaft are substantially formed in the shape of a rectangle.
10. The washing machine according to claim 8 , wherein the reinforcing member has a through-hole formed in a shape corresponding to the insertion hole of the rotor such that the reinforcing member is fixed to the rotary shaft.
11. The washing machine according to claim 10 , wherein the reinforcing member has a plurality of fitting protrusions protruded from an edge of the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively.
12. The washing machine according to claim 10 , further comprising a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from outside of the rotor.
13. The washing machine according to claim 12 , further comprising a pad disposed between the reinforcing member and a head of the fixing bolt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2004-76577 | 2004-09-23 | ||
KR1020040076577A KR20060027679A (en) | 2004-09-23 | 2004-09-23 | Clothes washing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060059955A1 true US20060059955A1 (en) | 2006-03-23 |
Family
ID=36072464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/143,488 Abandoned US20060059955A1 (en) | 2004-09-23 | 2005-06-03 | Washing machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060059955A1 (en) |
EP (1) | EP1640492A3 (en) |
KR (1) | KR20060027679A (en) |
CN (1) | CN1752329A (en) |
AU (1) | AU2005202268A1 (en) |
RU (1) | RU2005116966A (en) |
TW (1) | TW200610849A (en) |
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US20090107186A1 (en) * | 2007-10-31 | 2009-04-30 | Lg Electronics Inc. | Motor and washing machine using the same |
JP2018130157A (en) * | 2017-02-13 | 2018-08-23 | リンナイ株式会社 | Clothing dryer |
US20230006505A1 (en) * | 2021-06-30 | 2023-01-05 | Bryan Prucher | Synchronized dual radial gap motor cluster assembly |
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CN102195377B (en) * | 2010-03-12 | 2013-03-27 | 建准电机工业股份有限公司 | Motor rotating member |
KR101276303B1 (en) * | 2011-08-11 | 2013-06-24 | 삼성중공업 주식회사 | Wind turbine |
WO2019184797A1 (en) * | 2018-03-30 | 2019-10-03 | 青岛海尔滚筒洗衣机有限公司 | Direct drive motor for laundry treatment apparatus and laundry treatment apparatus |
Citations (4)
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US6396177B1 (en) * | 1999-01-08 | 2002-05-28 | Lg Electronics Inc. | Structure of rotor for outer rotor type brushless motor |
US6510716B1 (en) * | 1999-10-19 | 2003-01-28 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
US20030132675A1 (en) * | 2001-04-02 | 2003-07-17 | Kwon Ho Cheol | Motor for washing machine |
US20030213271A1 (en) * | 2002-05-14 | 2003-11-20 | Lim Hee Tae | Washing machine with structure for absorbing vibration of driving part |
Family Cites Families (3)
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DE4335966C2 (en) * | 1993-10-21 | 1998-07-16 | Fhp Motors Gmbh | Drive device for a washing machine or similar machine with a brushless DC motor |
TW472094B (en) * | 1999-05-19 | 2002-01-11 | Toshiba Corp | Rolling drum type washing machine |
US6460382B1 (en) * | 1999-10-18 | 2002-10-08 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
-
2004
- 2004-09-23 KR KR1020040076577A patent/KR20060027679A/en not_active Application Discontinuation
-
2005
- 2005-05-25 AU AU2005202268A patent/AU2005202268A1/en not_active Abandoned
- 2005-05-25 TW TW094117046A patent/TW200610849A/en unknown
- 2005-05-30 CN CNA2005100747010A patent/CN1752329A/en active Pending
- 2005-06-02 RU RU2005116966/12A patent/RU2005116966A/en unknown
- 2005-06-02 EP EP05253392A patent/EP1640492A3/en not_active Withdrawn
- 2005-06-03 US US11/143,488 patent/US20060059955A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US6396177B1 (en) * | 1999-01-08 | 2002-05-28 | Lg Electronics Inc. | Structure of rotor for outer rotor type brushless motor |
US6510716B1 (en) * | 1999-10-19 | 2003-01-28 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
US20030132675A1 (en) * | 2001-04-02 | 2003-07-17 | Kwon Ho Cheol | Motor for washing machine |
US20030213271A1 (en) * | 2002-05-14 | 2003-11-20 | Lim Hee Tae | Washing machine with structure for absorbing vibration of driving part |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090107186A1 (en) * | 2007-10-31 | 2009-04-30 | Lg Electronics Inc. | Motor and washing machine using the same |
EP2206224A1 (en) * | 2007-10-31 | 2010-07-14 | Lg Electronics Inc. | Motor and washing machine using the same |
US8174162B2 (en) * | 2007-10-31 | 2012-05-08 | Lg Electronics Inc. | Motor and washing machine using the same |
EP2206224A4 (en) * | 2007-10-31 | 2014-04-02 | Lg Electronics Inc | Motor and washing machine using the same |
JP2018130157A (en) * | 2017-02-13 | 2018-08-23 | リンナイ株式会社 | Clothing dryer |
US20230006505A1 (en) * | 2021-06-30 | 2023-01-05 | Bryan Prucher | Synchronized dual radial gap motor cluster assembly |
US11870322B2 (en) * | 2021-06-30 | 2024-01-09 | Bryan Prucher | Synchronized dual radial gap motor cluster assembly |
Also Published As
Publication number | Publication date |
---|---|
KR20060027679A (en) | 2006-03-28 |
RU2005116966A (en) | 2006-11-20 |
TW200610849A (en) | 2006-04-01 |
EP1640492A3 (en) | 2006-08-23 |
EP1640492A2 (en) | 2006-03-29 |
CN1752329A (en) | 2006-03-29 |
AU2005202268A1 (en) | 2006-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, SEON GOO;REEL/FRAME:016660/0032 Effective date: 20050513 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |