Classifications

• • 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
  • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
  • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
• • 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
  • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
• • 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
  • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
  • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
• • 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 

Definitions

• the present invention relates to washing machines, and more particularly, to a drum type washing machine which enables to enhance rigidity of a system thereof and make the drum type washing machine lighter.
• the washing machine performs steps of washing, rinsing, and spinning for removing dirt from laundry by using interaction between the detergent and the water.
• the washing machines there are cylinder type, agitator type, pulsator type washing machines according to washing types.
• the agitator type washing machine washes laundry by rotating a blade like agitator upright from a center of a washing tub in left/right directions, and the pulsator type washing machine washes the laundry with water circulation formed by rotating a disc like pulsator.
• the drum type washing machine washes the laundry by placing water, detergent, and the laundry in the drum having a plurality of projections on the drum and rotating the drum around a horizontal axis at a slow speed to cause impacts as the laundry is dropped after lifted by the projections and friction between the laundry. Since the drum type washing has advantage in that there is almost no damage of the laundry and water consumption is low, it is a trend that use of the drum type washing machine increases.
• FIG. 1 illustrates a related art drum type washing machine, schematically. The related art drum type washing machine will be described briefly with reference to FIG. 1.
• the related art drum type washing machine is provided with a drum 1 for holding washing objects, a tub 2 and a cabinet 7 both surrounding the drum 1, and a motor 5 for driving the drum 1.
• the related art drum type washing machine is also provided with a drum driving shaft 4 rotated by the motor 5 for rotating the drum 1.
• the drum driving shaft 4 is supported on a bearing housing 3 on a rear wall of the tub 2. Under the tub 2, there is a damper 6 for reducing transmission of vibration from the tub 2 caused by rotation of the drum to the cabinet 7.
• the bearing housing fixedly secured to the tub and the damper under the tub amplify vibration of the tub at the time the drum vibrates, to increase noise from an entire system.
• the amplified vibration of the tub requires enhancing strength of the entire system.
• an object of the present invention is to provide a drum type washing machine which enables to enhance rigidity of a system thereof and make the drum type washing machine lighter.
• Another object of the present invention is to provide a drum type washing machine which enables to reduce vibration from an entire system when the drum vibrates.
• Another object of the present invention is to provide a drum type washing machine which enables to reduce a number of components of, and a time period required for assembling, a bearing housing.
• a drum type washing machine includes a cabinet, a tub provided in the cabinet, a drum rotatably provided in the tub, and a bearing housing including a hub having a rotating shaft of the drum passed therethrough and bearings placed in a center portion thereof, a supporting portion which extends from an outside circumference of the hub integrally, and a fastening portion provided integrally with the supporting portion.
• a drum type washing machine includes a cabinet, a drum rotatably mounted in the cabinet, a bearing housing including a first bearing housing having a hub with a rotation shaft of the drum passed therethrough, a supporting portion along an outside circumference to the first bearing housing, and a second bearing housing having a fastening portion adjacent to the supporting portion, a vibration attenuating device in the cabinet for attenuating vibration generated by the drum, and a plurality of connective supporters for distributing force from the bearing housing and transmissing the distributed force to the vibration attenuating device.
• FIG. 1 illustrates a related art drum type washing machine, schematically
• FIG. 2 illustrates a section of a drum type washing machine in accordance with a preferred embodiment of the present invention, schematically;
• FIG. 3 illustrates a perspective view of the drum type washing machine in FIG. 2 with a partial cut away view
• FIG. 4 illustrates a perspective view of a first bearing housing mounted to the drum type washing machine in FIG. 2. Best Mode for Carrying Out the Invention
• FIG. 2 illustrates a section of a drum type washing machine in accordance with a preferred embodiment of the present invention schematically
• FIG. 3 illustrates a perspective view of the drum type washing machine in FIG. 2 with a partial cut away view.
• the drum type washing machine may include a cabinet
• the drum type washing machine has a bearing housing 300 for supporting the rotating shaft 40.
• the bearing housing 300 includes a first bearing housing 310 for direct supporting of the rotating shaft 40, and a second bearing housing 320 on an outside of the first bearing housing 310.
• the drum type washing machine also may include a vibration attenuating device 60 for attenuating vibration transmitted from the drum to the cabinet 70.
• a connective supporter 400 for supporting the bearing housing 300 may be provided between the vibration attenuating device 60 and the bearing housing 300.
• the connective supporter 400 has one side fastened to a lower side of the bearing housing with a fastening member 30, and the other side fixedly secured to the vibration attenuating device 60.
• the vibration attenuating device 60 is projected from a bottom of the cabinet 70, and may include attenuating members, such as dampers or springs.
• the bearing housing 300 and the connective supporter 400 will be described in detail, later.
• FIG. 4 illustrates a perspective view of the first bearing housing mounted to the drum type washing machine in FIG. 3.
• the first bearing housing 310 may include a hub 311 for placing the bearings (see 21 and 22 in FIG. 2) therein, a supporting portion 312 which extends from an outside circumference of the hub 311, and a fastening portion 313 which also extends from an outside circumference of the hub 311 longer than the supporting portion 312.
• the hub 311, the supporting portion 312, and the fastening portion 313 are formed integrally.
• the supporting portion 312 may have at least one first fastening boss 312a for fastening a stator (see 51 in FIG. 3) of the motor thereto, and the fastening portion 313 may have at least one second fastening boss 313a for fastening the connective supporter 400 thereto.
• the hub 311 may have a center opening 311a with a front bearing 21 and a rear bearing 22 placed in opposite sides thereof for rotatably supporting the rotating shaft (see 40 in FIG. 2).
• the supporting portion 312 surrounds the outside circumference of the hub 311 and is extended in a radial direction therefrom. It is preferable that the supporting portion 312 has a thickness of, for an example, 2 - 3 mm, and has a shape repeatedly projected and recessed substantially with reference to a plane perpendicular to an axis of the hub
• 312 may have the fastening boss 312a for fastening the stator 51 of the motor as described before.
• the fastening portion 313 is an extension from the hub 311 longer than the supporting portion 312. It is preferable that the fastening portion 313 is fabricated of a stiff material thicker than the supporting portion 312. This is because the connective supporter 400 is fastened to the second fastening boss 313a of the fastening portion 313 for supporting weight of the drum 10 and the bearing housing 300.
• a plurality of the fastening portions 313 are formed in a radial direction of the bearing housing 300, for an example, two as shown in the drawing.
• the connective supporter 400 is fastened to each of the second fastening bosses 313a of the fastening portions 313. Cf course, numbers of the fastening portions 313 and the connective supporters 400 are not limited to two, but appropriate variations thereof are possible.
• the connective supporter 400 may include an extension portion 410 extended downward in a radial direction of the bearing housing 300, and a connection portion bent from the extension portion 410.
• a plurality of the connective supporters 400 are provided, and more preferably, the connective supporters 400 are provided symmetrically under the bearing housing 300.
• connection portion 420 transmits the distributed force from the extension portion 410 to the vibration attenuating device 60.
• the connection portion 420 is mounted parallel to the bottom of the cabinet 70 substantially, and may be connected to a first vibration attenuating device 61 having a damper and a second vibration attenuating device 63 having a spring at an underside of the connection portion 420.
• the extension portion 410 may have reinforcing ribs 411 for reinforcing strength of the connective supporter 400 for sustaining the force to the extension portion 410.
• the second bearing housing 320 is connected to the first bearing housing 310 on a front side of the first bearing housing 310, i.e., on a front side of the supporting portion 312.
• the first bearing housing 310 may be injection molded inserted in the second bearing housing 320, or fabricated separately and coupled with the second bearing housing 320. In a case the first bearing housing 310 is injection molded inserted in the second bearing housing 320, the first bearing housing 310 and the second bearing housing 320 will be fabricated as one unit. In the meantime, the second bearing housing 320 may be formed of plastic, and the first bearing housing 310 may be formed of metal, for an example, aluminum.
• the drum type washing machine of the present invention has the following advantages.
• the bearing housing having the supporting portion for mounting the stator of the motor thereto and the fastening portion for mounting the connective supporter thereto fabricated as one unit, permits to reduce a number of components, and a time period, required for assembly of the bearing housing.

Landscapes

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

Applications Claiming Priority (2)

Publications (3)

Family

ID=39710614

Family Applications (1)

Country Status (5)

Families Citing this family (21)

Citations (3)

Family Cites Families (4)

• 2007
  • 2007-02-23 KR KR1020070018281A patent/KR101414599B1/ko active IP Right Grant
• 2008
  • 2008-02-22 EP EP08723088.4A patent/EP2122035B1/de active Active
  • 2008-02-22 WO PCT/KR2008/001050 patent/WO2008103007A2/en active Application Filing
  • 2008-02-22 US US12/449,697 patent/US20100139331A1/en not_active Abandoned
  • 2008-02-22 CN CN200880006037A patent/CN101680151A/zh active Pending

Patent Citations (3)

Non-Patent Citations (1)

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