US20180237974A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
US20180237974A1
US20180237974A1 US15/755,053 US201615755053A US2018237974A1 US 20180237974 A1 US20180237974 A1 US 20180237974A1 US 201615755053 A US201615755053 A US 201615755053A US 2018237974 A1 US2018237974 A1 US 2018237974A1
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US
United States
Prior art keywords
sensor
rotating
rotation
threaded shaft
nut member
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
Application number
US15/755,053
Other languages
English (en)
Inventor
Takashi Nakanishi
Tamotsu Kawamura
Kenji Yoshida
Haruo Mamiya
Hiroki Sato
Wataru Nakagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Washing Machine Co Ltd
Aqua Co Ltd
Original Assignee
Qingdao Haier Washing Machine Co Ltd
Aqua Co Ltd
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
Application filed by Qingdao Haier Washing Machine Co Ltd, Aqua Co Ltd filed Critical Qingdao Haier Washing Machine Co Ltd
Assigned to QINGDAO HAIER WASHING MACHINE CO., LTD., AQUA CO., LTD reassignment QINGDAO HAIER WASHING MACHINE CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWAMURA, TAMOTSU, MAMIYA, HARUO, NAKAGAWA, WATARU, NAKANISHI, TAKASHI, SATO, HIROKI, YOSHIDA, KENJI
Publication of US20180237974A1 publication Critical patent/US20180237974A1/en
Abandoned legal-status Critical Current

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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
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about an inclined 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
    • D06F37/02—Rotary receptacles, e.g. drums

Definitions

  • the present disclosure relates to a washing machine.
  • an outer drum part assembled with a rotating drum part with washings thrown therein is supported by a rotation supporting plate by means of an inclined rotation supporting shaft.
  • the rotation supporting plate is supported by an outer frame of the clothes washing and drying machine by means of a hoisting rod.
  • the outer drum part is provided with a rotation operating rope installing part, and an operating rope connected to the rotation operating rope installing part is coiled on a drum arranged on an inclined rotation motor of the outer frame. With the rotation of the inclined rotation motor, the operating rope moves upwards or downwards.
  • the outer drum part obliquely rotates around the inclined rotation supporting shaft.
  • the outer drum part is transversely inclined when the washings are thrown into the rotating drum part, and the outer drum part is erected along a perpendicular direction during washing, rinse and dewatering.
  • the rotation operating rope installing part, the operating rope and other structures may freely move when a member of a driving mechanism for rotating the outer drum part is configured to assemble the driving mechanism, thereby colliding with surrounding members and damaging the surrounding members.
  • Patent Literature 1 Japan specifically disclosed No. 4-166196 Bulletin
  • the present disclosure is based on the background, and aims to provide a washing machine which can prevent a situation of damaging surrounding members due to a member of a driving mechanism for rotating a washing drum, wherein the washing drum can rotate in a manner of intersecting a perpendicular direction.
  • the present disclosure provides a washing machine, including: a washing drum, accommodating washings and is rotatable in a manner of intersecting a perpendicular direction; a rotating part, connected to the washing drum in a manner of integral rotation; a threaded shaft; a motor for rotating the threaded shaft; a nut member, forming threaded connection with the threaded shaft and connected to the rotating part, and moving along an axial direction of the threaded shaft along with rotation of the threaded shaft, so that the rotating part rotates; a supporting part, for supporting the threaded shaft in a manner of rotation; a base part, fixed with the supporting part; a detected part, arranged on the nut member and configured to detect a rotating angle of the rotating part; a rotation-stopping protrusion, arranged on the nut member; a sensor, for detecting the detected part; and a limiting part, formed on the base part, extending along the axial direction in a shape of a straight line and incorporating the rotation-stopping pro
  • the limiting part is formed in a shape of a groove; and part of the base part for overlocking an end part of the limiting part in the axial direction is configured in a position in contact with the rotation-stopping protrusion in the axial direction before the nut member comes into contact with the supporting part.
  • the base part includes a longitudinal wall and a transverse wall which extends transversely from the longitudinal wall and is provided with the sensor, and the base part is configured on the washing drum in transverse arrangement.
  • the senor is a non-contact sensor for detecting the detected part in a non-contact manner.
  • the threaded shaft, the motor and the nut member forming threaded connection with the threaded shaft and connected to the rotating part form a driving mechanism for rotating the washing drum.
  • the driving mechanism when the motor rotates the threaded shaft, the nut member moves along the axial direction of the threaded shaft so that the rotating part and the washing drum rotate.
  • the sensor detects the detected part arranged on the nut member, thereby detecting a rotating angle of the rotating part.
  • the limiting part extending along the axial direction in the shape of the straight line is formed on the base part fixed with the supporting part for supporting the threaded shaft rotatably, and the rotation-stopping protrusion arranged on the nut member is incorporated into the limiting part.
  • movement of the rotation-stopping protrusion is limited by the limiting part of the base part, and thus the nut member cannot rotate around the threaded shaft. Therefore, a situation that the detected part is collided with the sensor can be prevented from occurring. As a result, a situation that the sensor is damaged due to the detected part can be prevented from occurring.
  • the limiting part is formed in a shape of a groove.
  • part of the base part for overlocking an end part of the limiting part in the axial direction is configured in a position in contact with the rotation-stopping protrusion in the axial direction before the nut member comes into contact with the supporting part, a situation that the supporting part is damaged due to collision between the nut member and the supporting part can be prevented.
  • the base part configured on the washing drum in transverse arrangement is provided with the sensor on the transverse wall extending from the longitudinal wall to the transverse direction.
  • front end parts of screws and other fasteners for installing the sensor on the transverse wall are exposed from the transverse wall to an upper side or a lower side.
  • the front end parts of the fasteners are not extended from the longitudinal wall to the transverse direction. Therefore, the front end parts of the fasteners can be prevented from contacting the washing drum, thereby realizing transverse spacing saving.
  • a situation that the sensor is damaged due to the detected part can be prevented from occurring.
  • FIG. 1 is a schematic three-dimensional diagram illustrating a washing machine in an embodiment of the present disclosure
  • FIG. 2 is a three-dimensional diagram illustrating a driving mechanism included in a washing machine
  • FIG. 3 is a left view illustrating the driving mechanism
  • FIG. 4 is an A-A sectional view of FIG. 3 ;
  • FIG. 5 is a top view illustrating the driving mechanism
  • FIG. 6 is a left view illustrating a driving mechanism in a variation example.
  • FIG. 7 is a B-B sectional view of FIG. 6 .
  • FIG. 1 is a schematic three-dimensional diagram illustrating a washing machine 1 in an embodiment of the present disclosure.
  • An up-down direction in FIG. 1 is called as an up-down direction Z of the washing machine 1 ;
  • a left-right direction in FIG. 1 is called as a front-rear direction Y of the washing machine 1 ; and
  • a transverse direction approximately orthogonal to paper of FIG. 1 is called as a left-right direction X.
  • the up-down direction Z is also a perpendicular direction.
  • an upper side is called as an upper side Z 1 ; and a lower side is called as a lower side Z 2 .
  • a right side in FIG. 1 is called as a front side Y 1 ; and a left side in FIG. 1 is called as a rear side Y 2 .
  • an outer side of the paper of FIG. 1 is called as a left side X 1 ; and an inner side of the paper of FIG. 1 is called as a right side X 2 .
  • the washing machine 1 although the washing machine 1 also includes a clothes washing and drying machine with a clothes drying function, the washing machine 1 is described by taking a washing machine which only executes washing operation without explaining the clothes drying function as an example below.
  • the washing operation includes a washing process, a rinsing process and a dewatering process.
  • the washing machine 1 includes: a housing 2 , a washing drum 3 configured in the housing 2 , a supporting frame 4 , a hoisting rod 5 , a rotating part 6 , an unlocking mechanism 7 and a driving mechanism 8 .
  • the housing 2 is, for example, made of metal, and is formed in a shape of a box.
  • a connecting surface 2 C for connecting a front surface 2 A and an upper surface 2 B is arranged on the housing 2 .
  • the connecting surface 2 C is, for example, an inclined surface which drops towards the front side Y 1 .
  • An outlet-inlet (not shown) for throwing in and taking out washings from the washing machine 1 is formed in a manner of bridging the front surface 2 A and the connecting surface 2 C.
  • the washing drum 3 includes an outer drum 10 and an inner drum 11 .
  • the outer drum 10 is, for example, made of resin, and is formed in a bottomed cylindrical shape.
  • An imaginary straight line passing through a center of a circle of the outer drum 10 is a central shaft J of the outer drum 10 .
  • water is stored in the outer drum 10 .
  • a circular opening 10 A through which the washings thrown in and taken out from the washing machine 1 pass is formed in an upper end part of the outer drum 10 on an opposite side of a bottom wall (not shown).
  • Metal rotating shafts 12 protruding to an outer side of the left-right direction X are arranged one by one on left and right side surfaces of the outer drum 10 .
  • FIG. 1 only shows the rotating shaft 12 on the left side X 1 .
  • the pair of left and right rotating shafts 12 are configured in a same position when observed from the left-right direction X.
  • the inner drum 11 is, for example, made of metal, and is formed in a bottomed cylindrical shape smaller than the outer drum 10 by one circle.
  • the washings are accommodated into the inner drum 11 .
  • a circular opening 11 A through which the washings accommodated into the inner drum 11 pass is formed in an upper end part of the inner drum 11 on an opposite side of a bottom wall (not shown).
  • the inner drum 11 is coaxially accommodated into the outer drum 10 . Therefore, the central shaft of the inner drum 11 is the above central shaft J.
  • an opening 11 A of the inner drum 11 is located at an inner side of an opening 10 A of the outer drum 10 .
  • the opening 10 A and the opening 11 A are opposite to the outlet-inlet (not shown) of the housing 2 .
  • the washings can be thrown in and taken out of the inner drum 11 .
  • a plurality of through holes 11 C are formed in a circumferential wall 11 B and a bottom wall of the inner drum 11 ; and water in the outer drum 10 can pass between the outer drum 10 and the inner drum 11 via the through holes 11 C. Therefore, a water level in the outer drum 10 is consistent with a water level in the inner drum 11 .
  • the inner drum 11 rotates around the central shaft J by accepting a driving force from a motor (not shown) arranged in the housing 2 .
  • the supporting frame 4 is made of metal, and includes a pair of left and right side plates 13 and a beam member 14 erected between lower end parts of the pair of side plates 13 .
  • Each side plate 13 is formed in an approximately rectangular shape when observed from the left-right direction X, and is thin in the left-right direction X.
  • a washing drum 3 is configured between the pair of side plates 13 .
  • the rotating shaft 12 protruding to the left side X 1 penetrates through the side plate 13 on the left side X 1 , and is supported rotatably by the side plate 13 on the left side X 1 via a bearing (not shown).
  • the rotating shaft 12 (not shown) protruding to the right side X 2 penetrates through the side plate 13 on the right side X 2 , and is supported rotatably by the side plate 13 on the right side X 2 via a bearing (not shown).
  • the washing drum 3 is supported by the supporting frame 4 , and can rotate around the rotating shaft 12 in a manner of intersecting the up-down direction Z.
  • the central shaft J of the outer drum 10 and the inner drum 11 is inclined to the front-rear direction Y relative to the up-down direction Z.
  • a rotating direction of the washing drum 3 is called as a rotating direction K.
  • a crossing angle at a sharp angle between an imaginary reference shaft L extending along the up-down direction Z and the central shaft J is a rotating angle ⁇ of the washing drum 3 relative to the reference shaft L.
  • the smaller the rotating angle ⁇ the closer to an erecting posture by the washing drum 3 .
  • the larger the rotating angle ⁇ is, the more inclined to the front side Y 1 the washing drum 3 is in such a manner that the opening 10 A of the outer drum 10 and the opening 11 A of the inner drum 11 face the front side Y 1 .
  • the rotating angle ⁇ can be changed at, for example, five levels of 5 degrees, 15 degrees, 30 degrees, 45 degrees and 60 degrees.
  • the rotating angle ⁇ is set as 45 degrees in such a manner that throwing of the washings becomes easy; and then, under a condition of detecting a load of the washings or supplying water to the washing drum 3 , the rotating angle ⁇ is set as 5 degrees. Then, in the washing process and the rinsing process, to promote position alternation of the washings in the inner drum 11 to realize efficient washing and rinsing, the rotating angle ⁇ is set to change between 5 degrees and 60 degrees.
  • An opening 13 A penetrating through the side plate 13 along the left-right direction X is formed in a region that the side plate 13 on the left side X 1 is closer to the lower side Z 2 than the rotating shaft 12 .
  • the opening 13 A is formed in an approximately rectangular shape which is long in the front-rear direction Y.
  • An accepting part 15 protruding to an outer side in the front-rear direction Y is arranged at a front end edge and a rear end edge of each side plate 13 .
  • the accepting part 15 can be formed integrally with the side plate 13 , and can also be installed as, for example, another component made of resin, on the side plate 13 .
  • Hoisting rods 5 are formed in a shape of a rod having a friction damper 16 at the lower end part. Four hoisting rods 5 are arranged, and one hoisting rod is respectively configured at four corners in the housing 2 when observed from top from the upper side Z 1 .
  • the hoisting rods 5 are in a suspended state from the upper part of the housing 2 , and specifically from a metal outer frame (not shown) forming part of the housing 2 .
  • a lower end part of the hoisting rod 5 on the front side Y 1 is connected with the accepting part 15 at the front side Y 1 of the side plate 13 on the left side X 1
  • a lower end part of the hoisting rod 5 on the rear side Y 2 is connected with the accepting part 15 at the rear side Y 2 of the side plate 13 on the left side X 1 .
  • a lower end part of the hoisting rod 5 on the front side Y 1 is connected with the accepting part 15 at the front side Y 1 of the side plate 13 on the right side X 2
  • a lower end part of the hoisting rod 5 (not shown) on the rear side Y 2 is connected with the accepting part 15 (not shown) at the rear side Y 2 of the side plate 13 on the right side X 2
  • the supporting frame 4 having the side plates 13 , the washing drum 3 supported by the supporting frame 4 , and the motor (not shown) for rotating the inner drum 11 are elastically supported by the housing 2 via the hoisting rods 5 .
  • the rotating part 6 is an approximately fan-shaped metal plate which is thin in the left-right direction X and protrudes to the front side Y 1 when observed from the left-right direction X.
  • the rotating part 6 has an outer circumferential edge 6 A which is formed in a circular arc shape along the rotating direction K and protrudes to the front side Y 1 .
  • a through hole 6 B penetrating through the rotating part 6 along the left-right direction X is formed in a position on the rotating part 6 consistent with a center of curvature of the outer circumferential edge 6 A.
  • a plurality of concave parts 6 C are formed in the outer circumferential edge 6 A, and five concave parts 6 C are formed herein.
  • the concave parts 6 C are sunken towards the through hole 6 B, penetrate through the rotating part 6 along the left-right direction X, and are configured in arrangement along the rotating direction K.
  • a spacing between adjacent concave parts 6 C can be fixed or different due to the position of the rotating part 6 .
  • two concave parts 6 C located on a rear-most side Y 2 and an adjacent position are spaced by 10 degrees in the rotating direction K, i.e., in the circumferential direction using the through hole 6 B as a center; and the spacing between other adjacent concave parts 6 C is fixed as 15 degrees.
  • the rotating part 6 is configured to be closer to the left side X 1 than the side plate 13 on the left side X 1 .
  • the rotating shaft 12 of the outer drum 10 of the washing drum 3 protruding to the left side X 1 and penetrating through the side plate 13 on the left side X 1 , is inserted into the through hole 6 B of the rotating part 6 , and is fixed to the rotating part 6 .
  • the rotating part 6 is connected to the washing drum 3 in a manner of integral rotation via the rotating shaft 12 .
  • an extending part 6 D protruding to the lower side Z 2 and specifically protruding to the outer side of a radial direction R of the rotating part 6 using the through hole 6 B as a center is integrally arranged.
  • the extending part 6 D is formed in a shape of a plate which is long in the radial direction R and thin in the left-right direction X.
  • a guiding hole 6 E which is long in the radial direction R and penetrates through the extending part 6 D along the left-right direction X is formed in the extending part 6 D. Both ends of a long edge direction of the guiding hole 6 E are in a blocked state.
  • the guiding hole 6 E in the up-down direction Z is located in the same position as the opening 13 A of the side plate 13 on the left side X 1 . Regardless of a value of the rotating angle ⁇ from 5 degrees to 60 degrees, the guiding hole 6 E is always opposite to the opening 13 A from the left side X 1 .
  • the unlocking mechanism 7 is fixed to a left side surface of the side plate 13 on the left side X 1 .
  • the unlocking mechanism 7 includes a body part 17 and a locking part 18 .
  • An actuator (not shown) composed of a solenoid and the like is arranged on the body part 17 .
  • the locking part 18 is formed in a shape of a protrusion protruding from the body part 17 to the rear side Y 2 , and strictly protruding to the rear upper side, and is supported by the body part 17 in a manner of sliding to the front-rear direction Y.
  • the actuator of the body part 17 is operated, so that the locking part 18 slides between an entering position for entering to the rear-most side Y 2 and an exiting position for exiting to a front-most side Y 1 .
  • the locking part 18 in FIG. 1 is in the entering position. Under a condition that any concave part 6 C of the rotating part 6 is in the same position as the locking part 18 in the rotating direction K, the locking part 18 enters the entering position, thereby being embedded into the concave part 6 C in the same position in the rotating direction K. Thus, rotation of the rotating part 6 and the washing drum 3 is locked. In this state, when the locking part 18 exits to the exiting position, since the locking part 18 leaves the concave part 6 C, the rotating part 6 and the washing drum 3 are unlocked.
  • the locking part 18 in the entering position is in a state of being embedded into the concave part 6 C located at the upper-most side Z 1 and the front-most side Y 1 .
  • the rotating angle ⁇ is 60 degrees
  • the rotation of the rotating part 6 and the washing drum 3 is locked.
  • the concave part 6 C into which the locking part 18 is embedded becomes another concave part 6 C located at the rear side Y 2
  • the rotating angle ⁇ is decreased; and in a state that the locking part 18 is embedded into the concave part 6 C at the rear-most side Y 2 , the rotating angle ⁇ is 5 degrees. In this state, the rotation of the rotating part 6 and the washing drum 3 is locked.
  • FIG. 2 is a three-dimensional diagram illustrating the driving mechanism 8 .
  • the driving mechanism 8 includes a base part 30 , a supporting part 31 , a threaded shaft 32 , a motor 33 , a coupling 34 , a nut member 35 and a sensor 36 .
  • the base part 30 is formed by, for example, bending a metal plate, and integrally includes a longitudinal wall 37 and a pair of upper and lower transverse walls 38 .
  • the longitudinal wall 37 is formed in a shape of a rectangular plate which is thin in the left-right direction X and long in the front-rear direction Y.
  • Each transverse wall 38 is formed in a shape of a rectangular plate which is thin in the up-down direction Z and long in the front-rear direction Y.
  • the transverse wall 38 on the upper side Z 1 is continuous from an entire region of the upper end of the longitudinal wall 37 and extends to the left side X 1
  • the transverse wall 38 on the lower side Z 2 is continuous from an almost entire region of the lower end of the longitudinal wall 37 and extends to the left side X 1 .
  • each transverse wall 38 serves as a flange part 38 A and is formed in a manner of being bent into an approximately right angle to the outer side of the up-down direction Z of the entire region throughout the front-rear direction Y.
  • the flange part 38 A of the transverse wall 38 on the upper side Z 1 is formed in a manner of bending to the upper side Z 1
  • the flange part 38 A of the transverse wall 38 on the lower side Z 2 is formed in a manner of bending to the lower side Z 2 .
  • a threaded hole 38 B is formed in each flange part 38 A.
  • An accommodating space 30 A encircled by the longitudinal wall 37 and a pair of upper and lower transverse walls 38 is formed on the base part 30 .
  • the supporting part 31 , the threaded shaft 32 , the coupling 34 , the nut member 35 and the sensor 36 are accommodated in the accommodating space 30 A.
  • a limiting part 38 C is formed on a part of the transverse wall 38 on the upper side Z 1 closer to the right side X 2 than the flange part 38 A.
  • the limiting part 38 C is formed in a shape of a groove slenderly extending along the front-rear direction Y in a shape of a straight line. Therefore, a long edge direction of the limiting part 38 C is the front-rear direction Y, and a short edge direction of the limiting part 38 C is the left-right direction X.
  • the limiting part 38 C is formed by penetrating through the transverse wall 38 on the upper side Z 1 along the up-down direction Z in the present embodiment, but can also be a concave part sunk to the upper side Z 1 without penetrating through the transverse wall 38 .
  • the base part 30 has an opening 30 B formed by continuously cutting away a part to enable the transverse wall 38 of the upper side Z 1 to be closer to the right side X 2 than the limiting part 38 C and the upper end part of the longitudinal wall 37 . Since part of the base part 30 is removed through the opening 30 B, integral light weight of the base part 30 can be realized.
  • the base part 30 is configured between the side plate 13 on the left side X 1 and the washing drum 3 in a manner of being parallel to the washing drum 3 along the left-right direction X, and a pair of upper and lower flange parts 38 A are configured oppositely from circumferential parts of the openings 13 A of the side plates 13 on the right side X 2 and the left side X 1 (with reference to FIG. 1 ). Screws 39 (with reference to FIG. 1 ) assembled on the side plate 13 on the left side X 1 are also assembled on the threaded hole 38 B of each flange part 38 A.
  • the base part 30 is fixed to the side plate 13 on the left side X 1 .
  • the accommodating space 30 A of the base part 30 is exposed from the side plate 13 on the left side X 1 to the left side X 1 via the opening 13 A (with reference to FIG. 1 ).
  • a pair of supporting parts 31 are arranged separately along the front-rear direction Y.
  • the supporting part 31 on the front side Y 1 is configured on the front end part of the longitudinal wall 37 of the base part 30
  • the supporting part 31 on the rear side Y 2 is configured on the rear end part of the longitudinal wall 37 .
  • Each supporting part 31 is formed by, for example, bending the metal plate.
  • Each supporting part 31 integrally includes a body part 40 and a base part 41 .
  • the body part 40 is in a shape of a plate which is thin in the front-rear direction Y, and is configured to protrude from the left side surface of the longitudinal wall 37 of the base part 30 to the left side X 1 .
  • a bearing 42 which is annular when observed from the front-rear direction Y is installed on the body part 40 in a manner of penetrating through the body part 40 along the front-rear direction Y.
  • the base part 41 is in a shape of a plate which is thin in the left-right direction X.
  • the supporting part 31 on the front side Y 1 is configured in such a manner that the base part 41 extends from the lower end of the body part 40 to the front side Y 1 , and is overlapped with the front end part of the longitudinal wall 37 when observed from the left side X 1 .
  • the supporting part 31 on the rear side Y 2 is configured in such a manner that the base part 41 extends from the lower end of the body part 40 to the rear side Y 2 , and is overlapped with the rear end part of the longitudinal wall 37 when observed from the left side X 1 .
  • each supporting part 31 is fixed to the base part 30 .
  • the threaded shaft 32 is formed in a cylindrical shape slenderly extending along the front-rear direction Y, and a screw thread 32 A which extends helically is formed on an almost entire region of the outer circumferential surface. It should be noted that in each figure except FIG. 2 , to facilitate illustration, a figure of the screw thread 32 A of the threaded shaft 32 is omitted.
  • the rear end part of the threaded shaft 32 is inserted into the annular bearing 42 of the supporting part 31 on the rear side Y 2 . In this state, the threaded shaft 32 is supported on both ends by a pair of front and rear supporting parts 31 in a manner of rotation.
  • the motor 33 is an ordinary electric motor, and has an output shaft 44 protruding to the rear side Y 2 and configured coaxially with the threaded shaft 32 .
  • the motor 33 is provided with a platy bracket 45 which is thin in the front-rear direction Y, from the rear side Y 2 .
  • the output shaft 44 is exposed from the bracket 45 to the rear side Y 2 .
  • the output shaft 44 is opposite, from the front side Y 1 , to part of the front end part of the threaded shaft 32 extending further to the front side Y 1 than the body part 40 of the supporting part 31 on the front side Y 1 .
  • An upper end part and a lower end part of a left end part of the bracket 45 serve as a pair of upper and lower flange parts 45 A, and is bent into an approximately right angle to the rear side Y 2 .
  • a threaded hole 45 B is formed in each flange part 45 A.
  • the motor 33 is configured between the side plate 13 on the left side X 1 and the washing drum 3 in a position closer to the front side Y 1 than the base part 30 , the flange parts 45 A of the bracket 45 are configured oppositely from circumferential parts of the openings 13 A of the side plates 13 on the right side X 2 and the left side X 1 (with reference to FIG. 1 ).
  • the motor 33 is fixed to the side plate 13 on the left side X 1 via the bracket 45 .
  • the motor 33 in this state is exposed from the side plate 13 on the left side X 1 to the left side X 1 via the opening 13 A (with reference to FIG. 1 ).
  • the coupling 34 includes: a cylindrical output part 47 externally embedded into a rear end part of the output shaft 44 of the motor 33 in a manner of integral rotation, a cylindrical input part 48 externally embedded into a front end part of the threaded shaft 32 in a manner of integral rotation, and a buffer part 49 configured between the output part 47 and the input part 48 .
  • the cylindrical output part 47 has a plurality of protrusion parts 47 A arranged along the circumferential direction and protruding to the rear side Y 2 .
  • the cylindrical input part 48 has a plurality of protrusion parts 48 A arranged along the circumferential direction and protruding to the front side Y 1 .
  • the protrusion part 47 A and the protrusion part 48 A are in a state of being arranged alternately one by one in the circumferential directions of the output part 47 and the input part 48 .
  • the buffer part 49 is configured between the adjacent protrusion part 47 A and the protrusion part 48 A.
  • the buffer part 49 is composed of rubber, a spring and other elastic bodies.
  • the output shaft 44 and the threaded shaft 32 are connected via the coupling 34 in a manner of integral connection. Therefore, when the motor 33 is driven to rotate the output shaft 44 , the threaded shaft 32 and the output shaft 44 rotate integrally.
  • the nut member 35 includes a body part 50 , a connecting part 51 and a detected part 52 .
  • the body part 50 is formed on an annular nut having a screw thread 50 A (with reference to FIG. 4 below) which extends helically on the inner circumferential surface, and is externally embedded into the threaded shaft 32 in such a manner that the screw thread 50 A and the screw thread 32 A of the threaded shaft 32 are in mutual threaded connection.
  • the nut member 35 integrally moves along the axial direction of the threaded shaft 32 , i.e., the front-rear direction Y along with rotation of the threaded shaft 32 .
  • the connecting part 51 is formed, for example, by bending a metal plate, and integrally includes a first part 51 A, a second part 51 B and a third part 51 C.
  • the first part 51 A is formed in a shape of a plate which is thin in the front-rear direction Y and extends to the up-down direction Z, and is fixed to the body part 50 through the screws 53 .
  • a rotation-stopping protrusion 51 D protruding to the upper side Z 1 is integrally arranged, and the rotation-stopping protrusion 51 D is incorporated into the limiting part 38 C (with reference to FIG. 4 ) of the transverse wall 38 of the upper side Z 1 of the base part 30 .
  • the second part 51 B is formed in a shape of a plate which is thin in the left-right direction X and extends to the up-down direction Z, protrudes from the left end edge of the first part 51 A to the front side Y 1 , is configured to extend from the accommodating space 30 A of the base part 30 to the left side X 1 , and is opposite to the body part 50 from the left side X 1 (with reference to FIG. 4 ).
  • a through hole 51 E penetrating through the second part 51 B along the left-right direction X is formed in the second part 51 B.
  • the second part 51 B is opposite to the extending part 6 D of the rotating part 6 from the right side X 2 .
  • a connecting pin 54 (with reference to FIG. 1 ) of the guiding hole 6 E inserted into the extending part 6 D from the left side X 1 is inserted into the through hole 51 E.
  • the connecting pin 54 cannot be taken out of each through hole 51 E and guiding hole 6 E.
  • the nut member 35 is connected with the rotating part 6 via the connecting pin 54 . Therefore, when the nut member 35 moves along the front-rear direction Y along with rotation of the threaded shaft 32 , the rotating part 6 is pulled to the front-rear direction Y by the nut member 35 , so as to rotate with the washing drum 3 .
  • the third part 51 C is formed in a shape of a plate which is thin in the up-down direction Z, protrudes from the lower end edge of the first part 51 A to the front side Y 1 , and is opposite to the body part 50 from the lower side Z 2 .
  • the detected part 52 is formed in a shape of a plate which is thin in the left-right direction X, and integrally includes a fixing part 52 A and a front end part 52 B.
  • the fixing part 52 A is configured in a manner of overlapping with the third part 51 C of the connecting part 51 from the lower side Z 2 , and is fixed to the third part 51 C through the screws 55 .
  • the front end part 52 B is also called as a limiting part, and is formed in a shape of a rod extending from the front end part of the fixing part 52 A to the right side X 2 .
  • the sensor 36 is a sensor for detecting the rotating angle ⁇ of the washing drum 3 according to a position of the nut member 35 in the front-rear direction Y, and as a sensor 36 , can be selected from an optical sensor and other optical non-contact sensors.
  • a groove 36 A sunken to the right side X 2 and penetrating through the sensor 36 along the front-rear direction Y is formed in the left side surface of the sensor 36 .
  • the sensor 36 is in such a state that light transects the groove 36 A along the up-down direction Z.
  • the quantity of the sensors 36 is the same as the quantity of the concave parts 6 C of the rotating part 6 .
  • each groove 36 A is configured in a lower region of the longitudinal wall 37 of the base part 30 in arrangement along the front-rear direction Y in a manner of overlapping when observed from the front-rear direction Y.
  • Each sensor 36 is fixed to the longitudinal wall 37 through the screw 56 .
  • the front end part 56 A of the screw 56 is configured to extend from the longitudinal wall 37 to the right side X 2 (with reference to FIG. 4 ).
  • the spacing between adjacent sensors 36 is set correspondingly to the spacing between adjacent concave parts 6 C.
  • the spacing between the adjacent sensors 36 in the four sensors 36 on the rear side Y 2 is fixed, the spacing between two sensors 36 located on the front-most side Y 1 and the rear adjacent position is narrower than the spacing between other adjacent sensors 36 .
  • the front end part 52 B of the detected part 52 arranged on the nut member 35 penetrates through the groove 36 A of each sensor 36 .
  • detection light of the groove 36 A is blocked by the front end part 52 B in a state that the front end part 52 B is embedded into the groove 36 A, the front end part 52 B does not contact the sensor 36 when penetrating through the groove 36 A.
  • the above locking part 18 is located at the upper-most side Z 1 and is in the same position as the concave part 6 C on the front-most side Y 1 in the rotating direction K; and the rotating angle ⁇ of the washing drum 3 is 60 degrees (with reference to FIG. 1 ).
  • the locking part 18 in a state that the front end part 52 B of the detected part 52 is embedded into the groove 36 A of the sensor 36 on the front-most side Y 1 , the locking part 18 is in the same position as the concave part 6 C on the rear-most side Y 2 in FIG.
  • the rotating angle ⁇ of the washing drum 3 is 5 degrees.
  • the rotating angle ⁇ is any angle of 5 degrees, 15 degrees, 30 degrees, 45 degrees and 60 degrees
  • the front end part 52 B of the detected part 52 is in a state of being embedded into the groove 36 A of a certain sensor 36 . Therefore, five sensors 36 uniformly detect the detected part 52 on the nut member 35 in a non-contact manner, thereby detecting the rotating angle ⁇ from 5 degrees, 15 degrees, 30 degrees, 45 degrees and 60 degrees.
  • FIG. 3 is a left view illustrating the driving mechanism 8 .
  • FIG. 4 is an A-A sectional view of FIG. 3 .
  • each sensor 36 includes a groove bottom 36 B and a pair of groove side surfaces 36 C, wherein the groove bottom 36 B is divided into a groove 36 A from the right side X 2 , and a pair of groove side surfaces 36 C extend parallelly from the groove bottom 36 B to the left side X 1 .
  • the groove bottom 36 B is erected between right end edges of the pair of groove side surfaces 36 C, an outline of the groove 36 A when observed from the front-rear direction Y is formed by the groove bottom 36 B and the pair of groove side surfaces 36 C.
  • the front end part 52 B of the detected part 52 in a state of being embedded into the groove 36 A from the left side X 1 is configured away from both of the groove bottom 36 B and the groove side surfaces 36 C.
  • a clearance between each of the groove bottom 36 B and the groove side surfaces 36 C and the front end part 52 B is called as a clearance 60 .
  • the rotation-stopping protrusion 51 D is inserted into the limiting part 38 C of the transverse wall 38 of the upper side Z 1 of the base part 30 from the lower side Z 2 in a manner of having a slight backlash in the short edge direction of the limiting part 38 C, i.e., the left-right direction X.
  • a clearance 61 is set between a left side circumferential part 38 D of the transverse wall 38 for overlocking the limiting part 38 C from the left side X 1 and the rotation-stopping protrusion 51 D;
  • a clearance 62 is set between a right side circumferential part 38 E of the transverse wall 38 for overlocking the limiting part 38 C from the right side X 2 and the rotation-stopping protrusion 51 D; and the clearance 61 and the clearance 62 are smaller than the clearance 60 .
  • a backlash of the rotation-stopping protrusion 51 D in the short edge direction of the limiting part 38 C is smaller than a backlash of the detected part 52 in the groove 36 A of the sensor 36 .
  • dimensions of the clearance 61 and the clearance 62 in the left-right direction X are smaller than the clearance 60 between the groove bottom 36 B and the front end part 52 B in the left-right direction X, and smaller than a dimension of the clearance 60 between the groove side surfaces 36 C and the front end part 52 B in the up-down direction Z.
  • the nut member 35 When the driving mechanism 8 is assembled, the nut member 35 is sometimes in a free state relative to the threaded shaft 32 . In this case, it can be contemplated that in a state that the detected part 52 is embedded into the groove 36 A of the sensor 36 , the nut member 35 rotates freely around the threaded shaft 32 . In addition, it can be contemplated that in the washing operation process of the washing machine 1 , especially in the dewatering process, the nut member 35 rotates around the threaded shaft 32 due to vibration.
  • the front end part 52 B of the detected part 52 which sways in the up-down direction Z with the rotation of the nut member 35 may collide with the groove bottom 36 B and the groove side surfaces 36 C of the sensor 36 , thereby damaging the sensor 36 located around the detected part 52 .
  • the rotation-stopping protrusion 51 D arranged on the nut member 35 is incorporated into the limiting part 38 C formed on the base part 30 and extending along the front-rear direction Y in a shape of a straight line; and the backlash of the rotation-stopping protrusion 51 D in the short edge direction of the limiting part 38 C is set to be smaller than the backlash of the detected part 52 in the groove 36 A of the sensor 36 .
  • the rotation-stopping protrusion 51 D before the detected part 52 collides with the sensor 36 , the rotation-stopping protrusion 51 D firstly contacts the circumferential part of the limiting part 38 C of the base part 30 , i.e., the above left side circumferential part 38 D and the right side circumferential part 38 E.
  • FIG. 5 is a top view illustrating the driving mechanism 8 .
  • a part of the transverse wall 38 of the upper side Z 1 of the base part 30 for overlocking the end part of the limiting part 38 C in the front-rear direction Y includes: a front side circumferential part 38 F for overlocking the front end of the limiting part 38 C and a rear side circumferential part 38 G for overlocking the rear end of the limiting part 38 C.
  • the front side circumferential part 38 F is configured in a position in contact with the rotation-stopping protrusion 51 D from the front side Y 1 firstly before the nut member 35 comes into contact with the supporting part 31 (with reference to FIG. 2 ) on the front side Y 1 .
  • the rear side circumferential part 38 G is configured in a position in contact with the rotation-stopping protrusion 51 D from the rear side Y 2 firstly before the nut member 35 comes into contact with the supporting part 31 (with reference to FIG. 2 ) on the rear side Y 2 . Therefore, the front side circumferential part 38 F is located in a position at least closer to the rear side Y 2 than the body part 40 (with reference to FIG. 2 ) of the supporting part 31 on the front side Y 1 , and the rear side circumferential part 38 G is located in a position at least closer to the front side Y 1 than the body part 40 (with reference to FIG. 2 ) of the supporting part 31 on the rear side Y 2 .
  • the supporting part 31 can be prevented from being deformed or the bearing 42 (with reference to FIG. 2 ) arranged on the supporting part 31 can be prevented from being damaged due to collision between the nut member 35 and the supporting part 31 .
  • FIG. 6 is a left view illustrating the driving mechanism 8 in a variation example.
  • FIG. 7 is a B-B sectional view of FIG. 6 .
  • a same reference numeral is given to a same part as a described part in FIG. 1 to FIG. 5 , and illustration of the part is omitted.
  • the sensor 36 is installed on the longitudinal wall 37 in above embodiments, the sensor 36 can be installed on one of the pair of upper and lower transverse walls 38 like variation examples shown in FIG. 6 and FIG. 7 .
  • the sensor 36 is installed on the transverse wall 38 on the lower side Z 2 from the upper side Z 1 in a posture of enabling the groove 36 A to face the upper side Z 1 .
  • the front end part 56 A of the screw 56 used for installing the sensor 36 on the transverse wall 38 penetrates through the sensor 36 and the transverse wall 38 on the lower side Z 2 from the upper side Z 1 , and is exposed from the transverse wall 38 to the lower side Z 2 .
  • the front end part 56 A of the screw 56 does not extend from the longitudinal wall 37 to the left-right direction X. Therefore, the front end part 56 A of the screw 56 can be prevented from contacting the washing drum 3 , thereby realizing spacing saving in the left-right direction X.
  • the front end part 56 A of the screw 56 used for installing the sensor 36 on the transverse wall 38 on the upper side Z 1 is exposed from the transverse wall 38 on the upper side Z 1 to the upper side Z 1 .
  • the senor 36 is not limited to the above-mentioned non-contact sensor, and can also be a contact sensor. Under a condition that the sensor is the contact sensor, as mentioned above, the rotation of the nut member 35 around the threaded shaft 32 is limited. Therefore, a damaged degree of the sensor 36 due to contact between the detected part 52 of the nut member 35 and the sensor 36 can be prevented.
  • the limiting part 38 C which is incorporated into the rotation-stopping protrusion 51 D of the nut member 35 , of the base part 30 may not be formed on the above transverse wall 38 on the upper side Z 1 , and can be formed on the transverse wall 38 on the lower side Z 2 , and can also be formed on the longitudinal wall 37 .
  • the detected part 52 may not be installed on the third part 51 C of the connecting part 51 of the nut member 35 , and the third part 51 C performs a function of the detected part 52 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US15/755,053 2015-08-25 2016-08-25 Washing machine Abandoned US20180237974A1 (en)

Applications Claiming Priority (3)

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JP2015166226A JP6681107B2 (ja) 2015-08-25 2015-08-25 洗濯機
JP2015-166226 2015-08-25
PCT/CN2016/096688 WO2017032325A1 (zh) 2015-08-25 2016-08-25 洗衣机

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US20180237974A1 true US20180237974A1 (en) 2018-08-23

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US15/755,053 Abandoned US20180237974A1 (en) 2015-08-25 2016-08-25 Washing machine

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US (1) US20180237974A1 (de)
EP (1) EP3342913A4 (de)
JP (1) JP6681107B2 (de)
KR (1) KR102090011B1 (de)
CN (1) CN107923100B (de)
WO (1) WO2017032325A1 (de)

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JP2011056146A (ja) * 2009-09-14 2011-03-24 Hitachi Appliances Inc 洗濯乾燥機

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KR950007848B1 (ko) * 1993-01-20 1995-07-20 엘지전자주식회사 복합 세탁기의 터브 회전 감지장치 및 그 방법
TW465610U (en) * 1999-04-30 2001-11-21 Sanyo Electric Co Washing machine
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CN101356309A (zh) * 2006-03-17 2009-01-28 三菱电机株式会社 洗涤机
JP4647561B2 (ja) * 2006-03-17 2011-03-09 三菱電機株式会社 洗濯機
JP4911605B2 (ja) * 2007-02-22 2012-04-04 三洋電機株式会社 洗濯機
CN201933310U (zh) * 2010-10-14 2011-08-17 吴尚哲 省能洗衣机
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EP3342913A1 (de) 2018-07-04
JP2017042326A (ja) 2017-03-02
CN107923100B (zh) 2020-02-11
JP6681107B2 (ja) 2020-04-15
KR20180042382A (ko) 2018-04-25
CN107923100A (zh) 2018-04-17
KR102090011B1 (ko) 2020-03-18
EP3342913A4 (de) 2019-04-10
WO2017032325A1 (zh) 2017-03-02

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