WO2017032324A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2017032324A1
WO2017032324A1 PCT/CN2016/096687 CN2016096687W WO2017032324A1 WO 2017032324 A1 WO2017032324 A1 WO 2017032324A1 CN 2016096687 W CN2016096687 W CN 2016096687W WO 2017032324 A1 WO2017032324 A1 WO 2017032324A1
Authority
WO
WIPO (PCT)
Prior art keywords
threaded shaft
rotating
washing
tub
rotating portion
Prior art date
Application number
PCT/CN2016/096687
Other languages
English (en)
French (fr)
Inventor
中西隆
川村保
吉田贤司
间宫春夫
佐藤弘树
中川亘
Original Assignee
青岛海尔洗衣机有限公司
海尔亚洲株式会社
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 青岛海尔洗衣机有限公司, 海尔亚洲株式会社 filed Critical 青岛海尔洗衣机有限公司
Priority to KR1020187008140A priority Critical patent/KR102018499B1/ko
Priority to US15/755,050 priority patent/US20180237973A1/en
Priority to EP16838582.1A priority patent/EP3342912A4/en
Priority to CN201680049040.2A priority patent/CN107923099B/zh
Publication of WO2017032324A1 publication Critical patent/WO2017032324A1/zh

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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 
    • 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 
    • D06F23/04—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 a vertical 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/206—Mounting of motor
    • 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
    • D06F37/30—Driving arrangements 
    • 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 
    • D06F37/32—Driving arrangements  for rotating the receptacle at one speed only
    • D06F37/34—Driving arrangements  for rotating the receptacle at one speed only in opposite directions, e.g. oscillating
    • 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 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • D06F37/38—Driving arrangements  for rotating the receptacle at more than one speed in opposite directions
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor
    • 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
    • D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
    • D06F49/06—Mountings, e.g. resilient mountings, for the bowl or casings; 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
    • 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 
    • D06F23/02—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 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
    • 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
    • D06F95/00—Laundry systems or arrangements of apparatus or machines; Mobile laundries 

Definitions

  • the invention relates to a washing machine.
  • the tub portion in which the rotating tub portion into which the laundry is placed is attached via a tilting rotation support shaft and supported by the rotation support plate.
  • the rotating support plate is supported by the outer frame of the washer-dryer via a hanger.
  • the outer tub portion is provided with a rotary steering rope mounting portion, and the control cord attached to the rotary steering rope mounting portion is wound around the reel of the tilting rotary motor provided on the outer frame.
  • the rope is either up or down, whereby the outer tub portion is tilted about the tilting rotation support shaft.
  • the outer tub portion can be laterally inclined when the laundry is put into the rotary tub portion, and the outer tub portion can be set up in the vertical direction during washing, rinsing, and dehydration.
  • the drive mechanism for rotating the drum portion, the steering rope, the tilting motor, or the like for rotating the tub portion may be generated during the operation of the washer dryer. A malfunction occurs due to a collision caused by vibration.
  • Patent Document 1 Japanese Patent Laid-Open No. Hei 4-166196
  • the present invention has been made in view of the background, and an object thereof is to provide a washing machine capable of suppressing occurrence of a failure of a driving mechanism for rotating a washing tub, wherein the washing tub can be rotated in a manner intersecting with a vertical direction.
  • the present invention relates to a washing machine comprising: a washing tub that accommodates laundry and can be rotated in a manner intersecting with a vertical direction; and a rotating portion having a plurality of recesses arranged in a rotating direction of the washing tub, and
  • the washing tub is coupled to the washing tub in an integrally rotatable manner;
  • the locking portion locks the rotation of the rotating portion by being embedded in the recess or releases the locking of the rotating portion by disengaging from the recess;
  • the threaded shaft the motor
  • the threaded shaft is rotated; and a nut member is threadedly coupled to the threaded shaft and coupled to the rotating portion, and moves along an axial direction of the threaded shaft as the threaded shaft rotates, thereby causing the The rotation portion is rotated, and the clearance of the locking portion and the rotating portion in a state of being embedded in the concave portion is smaller than the clearance between the screw shaft and the nut member.
  • the present invention is a washing machine comprising: a washing tub for accommodating laundry and capable of rotating in a manner intersecting with a vertical direction; a rotating portion coupled to the washing tub in an integrally rotatable manner; a threaded shaft; a motor, Rotating the threaded shaft; a nut member threadedly coupled to the threaded shaft and coupled to the rotating portion, moving along an axial direction of the threaded shaft as the threaded shaft rotates, thereby causing the The rotating portion rotates; and a pair of support portions rotatably support both side portions of the threaded shaft in the axial direction.
  • the present invention is characterized in that it includes a coupling that connects the output shaft of the motor and the threaded shaft.
  • the present invention is characterized in that the threaded shaft and the nut member are constituted by trapezoidal threads.
  • the rotating portion coupled to the washing tub in an integrally rotatable manner has a plurality of recesses arranged in the rotating direction of the washing tub, wherein the washing tub can be rotated in a manner crossing the vertical direction.
  • the rotation of the rotating portion is locked by the locking portion being fitted into the recess, the position of the washing tub in the rotational direction is locked.
  • the locking portion is disengaged from the concave portion to release the locking of the rotating portion, the washing tub can be rotated.
  • the threaded shaft, the motor, and the nut member threadedly coupled to the threaded shaft and coupled to the rotating portion constitute a driving mechanism for rotating the washing tub.
  • the drive mechanism when the motor rotates the threaded shaft, the nut member moves in the axial direction of the threaded shaft, thereby rotating the rotating portion and the washing tub.
  • the clearance of the locking portion and the rotating portion in the state of being embedded in the recess is smaller than the clearance of the threaded shaft and the nut member. Therefore, in a state where the locking portion is fitted into the concave portion, even if the vibration generated by the washing tub in the washing operation is transmitted to the rotating portion, the vibration is absorbed by the play of the locking portion and the rotating portion, and thus it is difficult to transmit to the nut member and the threaded shaft. , motor. Thereby, the malfunction of the drive mechanism can be suppressed.
  • the rotating portion is coupled to the vertical direction in an integrally rotatable manner
  • a threaded shaft, a motor, and a nut member screwed to the threaded shaft and coupled to the rotating portion constitute a driving mechanism for rotating the washing tub.
  • the drive mechanism when the motor rotates the threaded shaft, the nut member moves in the axial direction of the threaded shaft, thereby rotating the rotating portion and the washing tub.
  • Both side portions of the threaded shaft in the axial direction are rotatably supported by a pair of support portions.
  • the support rigidity of the screw shaft can be improved, and the screw shaft itself is less likely to vibrate. Therefore, even if the vibration generated by the washing tub in the washing operation is transmitted to the rotating portion, the vibration is hardly transmitted to the screw shaft or the motor. Therefore, the malfunction of the drive mechanism can be suppressed.
  • the output shaft of the motor and the threaded shaft are coupled by the coupling, so that the vibration generated by the washing tub during the operation of the washing machine is absorbed by the coupling, thereby being difficult to transmit to the motor. Thereby, the malfunction of the drive mechanism can be further suppressed.
  • Fig. 1 is a schematic perspective view of a washing machine in accordance with an embodiment of the present invention.
  • FIG. 2 is a perspective view of a drive mechanism included in the washing machine.
  • Fig. 3 is a left side view of the main part of the washing machine.
  • Fig. 4 is a perspective view of a main part of a washing machine according to a modification.
  • washing machine 1: washing machine; 3: washing tub; 6: rotating portion; 6C: recess; 18: locking portion; 31: support portion; 32: threaded shaft; 32B: both side portions; 33: motor; 34: coupling; : nut member; 44: output shaft; K: direction of rotation; Y: front and rear direction; Z: up and down direction.
  • FIG. 1 is a schematic perspective view of a washing machine 1 according to an embodiment of the present invention.
  • the up and down direction in FIG. 1 is referred to as the washing machine 1
  • the left-right direction in FIG. 1 is referred to as the front-rear direction Y of the washing machine 1
  • the direction substantially orthogonal to the paper surface of FIG. 1 is referred to as the left-right direction X.
  • the up and down direction Z is also the vertical direction.
  • the upper side is referred to as the upper side Z1
  • the lower side is referred to as the lower side Z2.
  • the front-rear direction Y the right side in FIG.
  • the front side Y1 is referred to as the front side Y1
  • the left side in FIG. 1 is referred to as the rear side Y2.
  • the front side of the paper surface of FIG. 1 is referred to as the left side X1
  • the back side of the paper surface of FIG. 1 is referred to as the right side X2.
  • the washing machine 1 the washing machine having the dry clothes function is also included.
  • the washing machine 1 will be described below by taking a washing machine in which the washing operation is omitted and the washing operation is performed as an example.
  • the washing operation includes a washing process, a rinsing process, and a dehydration process.
  • the washing machine 1 includes a casing 2, a washing tub 3 disposed in the casing 2, a support frame 4, a boom 5, a rotating portion 6, a lock releasing mechanism 7, and a drive mechanism 8.
  • the casing 2 is made of, for example, metal, and is formed in a box shape.
  • a joint surface 2C that connects the front surface 2A and the upper surface 2B is provided.
  • the joint surface 2C is, for example, an inclined surface that descends toward the front side Y1.
  • An entrance (not shown) for taking in and taking out the laundry into the washing machine 1 is formed so as to bridge the front surface 2A and the joint surface 2C.
  • the washing tub 3 includes an outer tub 10 and an inner tub 11.
  • the outer tub 10 is made of, for example, a resin, and is formed in a bottomed cylindrical shape.
  • the imaginary straight line passing through the center of the outer tub 10 is the central axis J of the outer tub 10.
  • a circular opening 10A through which the laundry in the washing machine 1 is taken in and out is formed at an upper end portion of the outer tub 10 on the side opposite to the bottom wall (not shown).
  • metal rotating shafts 12 projecting outward in the left-right direction X are provided one by one. In Fig. 1, only the rotational axis 12 of the left side X1 is illustrated.
  • the pair of right and left rotating shafts 12 are disposed at the same position when viewed from the left-right direction X.
  • the inner tub 11 is made of, for example, metal, and is formed in a bottomed cylindrical shape that is slightly smaller than the outer tub 10.
  • the laundry is contained in the inner tub 11.
  • a circular opening 11A through which the laundry accommodated in the inner tub 11 passes is formed at an upper end portion of the inner tub 11 on the side opposite to the bottom wall (not shown).
  • the inner tub 11 is housed coaxially in the outer tub 10. Therefore, the central axis of the inner tub 11 is the above-described central axis J.
  • the opening 11A of the inner tub 11 is located inside the opening 10A of the outer tub 10.
  • the opening 10A and the opening 11A face the entrance and exit (not shown) of the casing 2, whereby the laundry can be taken in and out of the inner tub 11.
  • a plurality of through holes 11C are formed in the circumferential wall 11B and the bottom wall of the inner tub 11, and water in the outer tub 10 passes between the outer tub 10 and the inner tub 11 via the through holes 11C. Therefore, the water level in the outer tub 10 coincides with the water level in the inner tub 11.
  • the inner tub 11 is rotated about the central axis J by receiving a driving force from a motor (not shown) provided in the casing 2.
  • the support frame 4 is made of metal and includes a pair of right and left side plates 13 and a beam member 14 spanned between the lower end portions of the pair of side plates 13.
  • Each of the side plates 13 is formed in a substantially rectangular shape as viewed in the left-right direction X, and is thinner in the left-right direction X.
  • a washing tub 3 is disposed between the pair of side plates 13.
  • the rotating shaft 12 that protrudes to the left side X1 penetrates the side plate 13 of the left side X1, and is rotatably supported by the side plate 13 of the left side X1 via a bearing (not shown).
  • a rotating shaft 12 (not shown) that protrudes to the right side X2 penetrates the side plate 13 of the right side X2, and is rotatably supported by the side plate 13 of the right side X2 via a bearing (not shown).
  • the washing tub 3 is supported by the support frame 4, and is rotatable around the rotating shaft 12 so as to intersect the vertical direction Z.
  • the center axis J of the outer tub 10 and the inner tub 11 is inclined with respect to the up-and-down direction Z in the front-rear direction Y.
  • the direction of rotation of the washing tub 3 is referred to as a rotational direction K.
  • the angle of intersection of the imaginary reference axis L extending in the up-and-down direction Z and the acute angle of the central axis J is the rotation angle ⁇ of the washing tub 3 with respect to the reference axis L.
  • the rotation angle ⁇ can be changed by, for example, five degrees of 5 degrees, 15 degrees, 30 degrees, 45 degrees, and 60 degrees.
  • the turning angle ⁇ is set to be such that the feeding of the laundry becomes easy. 45 degrees, then, in the case of detecting the load of the laundry or supplying water to the washing tub 3, the rotation angle ⁇ is set to 5 degrees. Then, in the washing process and the rinsing process, in order to promote the alternate position of the laundry in the inner tub 11 to achieve efficient washing and rinsing, the rotation angle ⁇ is set to vary between 5 degrees and 60 degrees.
  • an opening 13A penetrating the side plate 13 in the left-right direction X is formed.
  • the opening 13A is formed in a substantially rectangular shape that is long in the front-rear direction Y.
  • a receiving portion 15 that protrudes outward in the front-rear direction Y is provided at the front end edge and the rear end edge of each of the side plates 13.
  • the receiving portion 15 may be formed integrally with the side plate 13, or may be attached to the side plate 13 as another component made of, for example, resin.
  • the boom 5 is formed in a rod shape having a friction damper 16 at the lower end portion.
  • These booms 5 are in a state of being suspended from the upper portion of the casing 2 and, in detail, from a metal outer frame (not shown) constituting a part of the casing 2.
  • the lower end portion of the boom 5 of the front side Y1 is coupled to the receiving portion 15 of the front side Y1 of the side panel 13 of the left side X1, and the boom 5 of the rear side Y2 is connected.
  • the receiving portion 15 of the rear side Y2 of the side plate 13 is coupled.
  • the lower end portion of the boom 5 on the front side Y1 is coupled to the receiving portion 15 of the front side Y1 of the side panel 13 on the right side X2, and the boom 5 on the rear side Y2 (
  • the lower end portion (not shown) is coupled to the receiving portion 15 (not shown) of the rear side Y2 of the side plate 13 of the right side X2.
  • the rotating portion 6 is a substantially fan-shaped metal plate which is thin in the left-right direction X and which is formed to protrude toward the front side Y1 as viewed from the left-right direction X.
  • the rotating portion 6 has an outer peripheral edge 6A formed in an arc shape along the rotational direction K and bulging toward the front side Y1.
  • a through hole 6B that penetrates the rotating portion 6 in the left-right direction X is formed at a position of the rotating portion 6 that coincides with the center of curvature of the outer peripheral edge 6A.
  • a plurality of recesses 6C are formed, here five.
  • These recessed portions 6C are recessed in the through hole 6B and penetrate the rotating portion 6 in the left-right direction X, and are arranged side by side in the rotational direction K.
  • the interval between adjacent recesses 6C may be fixed or may vary depending on the position of the rotating portion 6.
  • the rotation angle ⁇ is set to 5 degrees, 15 degrees, 30 degrees, 45 degrees, and 60 degrees
  • the rotation portion 6 in the posture of FIG. 1 is located at the last side Y2 and its front neighbor.
  • the two recessed portions 6C at the position are spaced apart by 10 degrees in the rotational direction K, that is, in the circumferential direction centering on the through hole 6B, and the interval between the other adjacent recessed portions 6C is uniformly 15 degrees.
  • the rotating portion 6 is disposed closer to the left side X1 than the side plate 13 on the left side X1.
  • the rotation shaft 12 of the outer tub 10 of the washing tub 3 which protrudes to the left side X1 and penetrates the side plate 13 of the left side X1 is inserted into the through hole 6B of the rotating portion 6, and is fixed to the rotating portion 6. Thereby, the rotating portion 6 is coupled to the washing tub 3 integrally rotatably via the rotating shaft 12.
  • the rotating portion 6 in the posture of FIG. 1 is integrally provided with the lower side Z2 at the rear end of the outer peripheral edge 6A, and specifically protrudes outward in the radial direction R of the rotating portion 6 around the through hole 6B.
  • the extension unit 6D is formed in a plate shape that is long in the radial direction R and thin in the left-right direction X.
  • a guide hole 6E that is long in the radial direction R and penetrates the extended portion 6D in the left-right direction X is formed. Both ends of the guide hole 6E in the longitudinal direction are in a blocked state.
  • the guide hole 6E is located at the same position as the opening 13A of the side plate 13 of the left side X1 in the up and down direction Z. Regardless of which of the 5 to 60 degrees the rotation angle ⁇ is, the guide hole 6E always faces the opening 13A from the left side X1.
  • the lock release mechanism 7 is fixed to the left side surface of the side plate 13 of the left side X1.
  • the lock release mechanism 7 includes a main body portion 17 and a lock portion 18.
  • An actuator (not shown) including a solenoid or the like is provided in the main body portion 17.
  • the lock portion 18 is formed to protrude from the main body portion 17 toward the rear side Y2, and is strictly convex toward the rear upper side, and is supported by the main body portion 17 so as to be slidable in the front-rear direction Y. Actuator of the main body portion 17 The lock portion 18 is slid between the entry position entering the last side Y2 and the exit position exiting to the foremost side Y1.
  • the locking portion 18 of Figure 1 is in the entry position.
  • the locking portion 18 is inserted into the entry position, thereby being fitted into the recessed portion 6C at the same position in the rotational direction K.
  • the rotation of the rotating portion 6 and the washing tub 3 is locked.
  • the lock portion 18 is retracted to the exit position, since the lock portion 18 is separated from the recess portion 6C, the lock of the rotation portion 6 and the washing tub 3 is released.
  • the locking portion 18 of the entry position is in a state of being embedded in the recess 6C located at the uppermost side Z1 and located at the foremost side Y1.
  • the rotation angle ⁇ 60 degrees
  • the rotation of the rotating portion 6 and the washing tub 3 is locked.
  • the rotation angle ⁇ 5 degrees
  • the rotation of the rotating portion 6 and the washing tub 3 is locked in this state.
  • FIG. 2 is a perspective view of the drive mechanism 8.
  • the drive mechanism 8 includes a base portion 30, a support portion 31, a threaded shaft 32, a motor 33, a coupling 34, a nut member 35, and a sensor 36.
  • the base portion 30 is formed, for example, by a bent metal plate, and integrally includes a vertical wall 37 and a pair of upper and lower lateral walls 38.
  • the vertical wall 37 is formed in a rectangular plate shape that is thin in the left-right direction X and long in the front-rear direction Y.
  • the lateral wall 38 is formed in a rectangular plate shape that is thin in the vertical direction Z and long in the front-rear direction Y.
  • the lateral wall 38 of the upper side Z1 extends continuously from the entire upper end of the vertical wall 37 and extends to the left side X1, and the lateral wall 38 of the lower side Z2 continues from the entire entire lower end of the vertical wall 37 to the left side.
  • X1 extends.
  • each of the lateral walls 38 is formed as a flange portion 38A so as to be bent at a substantially right angle in the up-down direction Z over the entire region in the front-rear direction Y.
  • the flange portion 38A of the lateral wall 38 of the upper side Z1 is formed to be bent toward the upper side Z1
  • the flange portion 38A of the lateral wall 38 of the lower side Z2 is formed to be bent toward the lower side Z2.
  • a screw hole 38B is formed in each of the flange portions 38A.
  • the accommodating space 30A surrounded by the vertical wall 37 and the pair of upper and lower horizontal walls 38 is formed in the base part 30.
  • the accommodating space 30A houses the support portion 31, the screw shaft 32, the coupling 34, the nut member 35, and the sensor 36.
  • the base portion 30 is disposed between the side plate 13 on the left side X1 and the washing tub 3, and the pair of upper and lower flange portions 38A are disposed to face the peripheral edge portion of the opening 13A of the side plate 13 of the left side X1 from the right side X2 (refer to figure 1).
  • the screw 39 (see FIG. 1) assembled to the side plate 13 of the left side X1 is also assembled to the screw hole 38B of each flange portion 38A, whereby the base portion 30 is fixed to the side plate 13 of the left side X1.
  • the accommodating space 30A of the base portion 30 is exposed from the side plate 13 on the left side X1 to the left side X1 via the opening 13A (see FIG. 1).
  • the support portion 31 is formed, for example, by bending a metal plate, and integrally includes a main body portion 40 and a base portion 41.
  • the main body portion 40 has a thin plate shape in the front-rear direction Y, and is disposed so as to protrude from the left side surface of the vertical wall 37 of the base portion 30 toward the left side X1.
  • the main body portion 40 is attached with a bearing 42 that is annular as viewed from the front-rear direction Y, and the bearing 42 is disposed to be exposed at least from the front surface of the main body portion 40.
  • the base portion 41 has a thin plate shape in the left-right direction X, and extends from the lower end of the main body portion 40 toward the rear side Y2, and is disposed to overlap the rear end portion of the vertical wall 37 from the left side X1.
  • the support portion 31 is fixed to the base portion 30 by assembling the screw 43 to the base portion 41 and the vertical wall 37.
  • the threaded shaft 32 is formed in a columnar shape elongated in the front-rear direction Y, and a spirally extending thread 32A is formed in almost the entire outer peripheral surface thereof.
  • illustration of the screw 32A of the screw shaft 32 is abbreviate
  • the rear end portion of the threaded shaft 32 is inserted into the annular bearing 42 of the support portion 31. In this state, the threaded shaft 32 is rotatably supported by the support portion 31 in a rotatable manner.
  • the motor 33 is a general electric motor and has an output shaft 44 that protrudes toward the rear side Y2 and is coaxially arranged with the screw shaft 32.
  • the motor 33 is attached with a plate-shaped bracket 45 that is thin in the front-rear direction Y from the rear side Y2.
  • the output shaft 44 is exposed from the bracket 45 to the rear side Y2, and is disposed to face the front end portion of the screw shaft 32 from the front side Y1.
  • the output shaft 44 is exposed from the bracket 45 to the rear side Y2, and is disposed to face the front end portion of the screw shaft 32 from the front side Y1.
  • the upper end portion and the lower end portion of the left end portion of the bracket 45 are bent at a substantially right angle to the rear side Y2 as a pair of upper and lower flange portions 45A, and a screw hole 45B is formed in each of the flange portions 45A.
  • the motor 33 is disposed closer to the front side Y1 than the base portion 30, and is disposed between the side plate 13 of the left side X1 and the washing tub 3, and the respective flange portions 45A of the bracket 45 are from the side of the right side X2 and the side of the left side X1.
  • the peripheral edge portion of the opening 13A of the plate 13 is disposed to face each other (see FIG. 1).
  • the screw 46 (see FIG. 1) assembled to the side plate 13 of the left side X1 is also assembled to the screw hole 45B of each flange portion 45A, and the motor 33 is fixed to the side plate 13 of the left side X1 via the bracket 45.
  • the motor 33 in this state is exposed from the side plate 13 of the left side X1 to the left side X1 via the opening 13A (refer to FIG. 1).
  • the coupling 34 includes a cylindrical output portion 47 that is externally fitted to the rear end portion of the output shaft 44 of the motor 33 so as to be integrally rotatable, and a barrel that is externally fitted to the front end portion of the threaded shaft 32 so as to be integrally rotatable
  • the input portion 48 and the buffer portion 49 disposed between the output portion 47 and the input portion 48.
  • the cylindrical output portion 47 has a plurality of protruding portions 47A that are arranged along the circumferential direction thereof and protrude toward the rear side Y2.
  • the cylindrical input portion 48 has a plurality of projections 48A arranged along the circumferential direction thereof and protruding toward the front side Y1.
  • the protruding portion 47A and the protruding portion 48A are alternately arranged one by one in the circumferential direction of the output portion 47 and the input portion 48. state.
  • a buffer portion 49 is disposed between the adjacent protruding portion 47A and the protruding portion 48A.
  • the buffer portion 49 is made of an elastic body such as rubber or spring.
  • the output shaft 44 and the threaded shaft 32 are integrally rotatably coupled via a coupling 34. Therefore, when the motor 33 is driven to rotate the output shaft 44, the threaded shaft 32 rotates integrally with the output shaft 44.
  • the nut member 35 includes a main body portion 50, a coupling portion 51, and a detected portion 52.
  • the main body portion 50 constitutes an annular nut in which a spirally extending screw thread 50A (see FIG. 3 described later) is formed on the inner circumferential surface, and the screw thread 50A and the screw shaft 32A of the screw shaft 32 are screwed to each other.
  • the threaded shaft 32 rotates in accordance with the driving of the motor 33, the nut member 35 as a whole moves along the axial direction of the threaded shaft 32, that is, the front-rear direction Y, as the threaded shaft 32 rotates.
  • the joint portion 51 is formed, for example, by a bent metal plate, and integrally has a first portion 51A, a second portion 51B, and a third portion 51C.
  • the first portion 51A is formed in a plate shape that is thin in the front-rear direction Y and extends in the vertical direction Z, and is fixed to the main body portion 50 by screws 53.
  • the second portion 51B is formed in a plate shape that is thin in the left-right direction X and extends in the vertical direction Z, protrudes from the left end edge of the first portion 51A toward the front side Y1, and faces the main body portion 50 from the left side X1.
  • a through hole 51D penetrating the second portion 51B in the left-right direction X is formed.
  • the second portion 51B faces the extended portion 6D of the rotating portion 6 from the right side X2, and the connecting pin 54 (see FIG. 1) in which the guiding hole 6E of the extending portion 6D is inserted from the left side X1 is inserted into the through hole 51D.
  • the coupling pin 54 cannot be removed from each of the through holes 51D and the guide hole 6E, and the nut member 35 is coupled to the rotating portion 6 via the coupling pin 54. Therefore, when the nut member 35 moves in the front-rear direction Y with the rotation of the threaded shaft 32, the rotating portion 6 is pulled forward and backward by the nut member 35, thereby rotating with the washing tub 3.
  • the third portion 51C is formed in a thin plate shape in the vertical direction Z, protrudes from the lower end edge of the first portion 51A toward the front side Y1, and faces the main body portion 50 from the lower side Z2.
  • the detected portion 52 is formed in a thin plate shape in the left-right direction X, and integrally has a fixed portion 52A and a front end portion 52B.
  • the fixing portion 52A is disposed so as to overlap the third portion 51C of the coupling portion 51 from the lower side Z2, and is fixed to the third portion 51C by the screw 55.
  • the distal end portion 52B is formed to extend from the distal end portion of the fixed portion 52A to the right side X2.
  • the sensor 36 is a sensor that detects the rotational angle ⁇ of the washing tub 3 based on the position of the nut member 35 in the front-rear direction Y.
  • an optical sensor such as a photosensor can be used.
  • a groove 36A penetrating the sensor 36 in the front-rear direction Y is formed on the left side surface of the sensor 36,
  • the sensor 36 is in a state where the detection light crosses the groove 36A in the up and down direction Z.
  • the number of the sensors 36 is the same as the number of the recesses 6C of the rotating portion 6, in other words, there are five in the present embodiment, and the respective grooves 36A are overlapped in the front-rear direction Y, on the vertical wall of the base portion 30.
  • the lower side regions of 37 are arranged in the front-rear direction Y.
  • Each sensor 36 is fixed to the vertical wall 37 by a screw 56.
  • the interval between adjacent sensors 36 is set so as to correspond to the interval between adjacent recesses 6C. Therefore, in the present embodiment, although the interval between the adjacent sensors 36 among the four sensors 36 on the rear side Y2 is fixed, the interval between the two sensors 36 located at the foremost side Y1 and the subsequent adjacent position is longer than that of the other adjacent sensors.
  • the interval between 36 is narrow.
  • the above-described locking portion 18 is located at the uppermost side Z1 and is recessed in the rotational direction K with the foremost side Y1. 6C is at the same position, and the rotation angle ⁇ of the washing tub 3 is 60 degrees (refer to FIG. 1).
  • the lock portion 18 is at the same position in the rotational direction K as the concave portion 6C of the last side Y2 of FIG.
  • the rotation angle ⁇ of the tub 3 is 5 degrees.
  • the rotation angle ⁇ is any one of 5 degrees, 15 degrees, 30 degrees, 45 degrees, and 60 degrees
  • the distal end portion 52B of the detected portion 52 is in a state of being fitted into the groove 36A of one of the sensors 36. Therefore, the five sensors 36 collectively detect which of the 5 degrees, 15 degrees, 30 degrees, 45 degrees, and 60 degrees the rotation angle ⁇ is.
  • FIG. 3 is a left side view of the main portion of the washing machine 1, specifically, the side plate 13 of the left side X1 of the support frame 4 and its peripheral portion.
  • the left side portion of the threaded shaft 32 and the nut member 35 are shown in cross-sectional line, and the illustration of the extended portion 6D of the rotating portion 6 and its peripheral portion is omitted.
  • an enlarged view of a portion surrounded by a dotted circle and an enlarged view of a portion surrounded by a dotted circle are shown together, but the scales are different in these enlarged views.
  • FIG. 3 An enlarged view of a portion surrounded by a chain line in FIG. 3 shows a state in which the locking portion 18 of the entry position is fitted into a certain recess 6C of the rotating portion 6.
  • a mark 6F is given to the bottom portion, and a pair of side faces extending in the radial direction R from the both ends of the bottom portion 6F in the rotational direction K toward the outer peripheral edge 6A of the rotating portion 6 are given a mark 6G.
  • the clearance of the locking portion 18 and the rotating portion 6 in the state of being embedded in the recessed portion 6C is constituted by the gap 60 and the gap 61, wherein the gap 60 is a gap between the bottom portion 6F of the recessed portion 6C and the radial direction R of the locking portion 18,
  • the gap 61 is a gap between the side faces 6G and the rotation direction K of the lock portion 18. Since the pair of side faces 6G are formed to be convexly curved in proximity to each other, the most protruding portion of the side face 6G and the gap 61 of the lock portion 18 are as small as zero.
  • a pair of inclined faces 18A that are close to each other toward the bottom portion 6F side of the recessed portion 6C are provided at both ends in the rotational direction K of the distal end portion of the lock portion 18, and a pair of side faces 6G of the concave portion 6C are provided.
  • the end farthest from the bottom portion 6F is provided with a pair of inclined faces 6H that are apart from each other away from the bottom portion 6F. The entry of the lock portion 18 is guided by the inclined surface 18A and the inclined surface 6H, whereby the lock portion 18 can be smoothly fitted into the recess portion 6C.
  • FIG. 3 An enlarged view of a portion surrounded by a broken line circle in Fig. 3 shows the threaded shaft 32 in the threaded state and the nut member 35.
  • the thread 32A of the threaded shaft 32 and the thread 50A of the body portion 50 of the nut member 35 have a trapezoidal cross section. Therefore, the threaded shaft 32 and the nut member 35 are formed by trapezoidal threads.
  • the play of the threaded shaft 32 and the nut member 35 is constituted by a gap 62 between the adjacent screw 32A and the thread in the front-rear direction Y of the thread 50A.
  • the gap 60 and the gap 61 described above are set to be smaller than the gap 62. That is, the clearance of the locking portion 18 and the rotating portion 6 in the state of being fitted into the recessed portion 6C is smaller than the clearance of the threaded shaft 32 and the nut member 35. Therefore, in a state where the locking portion 18 is fitted into the recessed portion 6C, even if the vibration generated by the washing tub 3 in the washing operation is transmitted to the rotating portion 6, the vibration is absorbed by the play of the locking portion 18 and the rotating portion 6, and thus it is difficult to transmit. To the nut member 35, the threaded shaft 32, the coupling 34, and the motor 33. Thereby, the load on the drive mechanism 8 due to the vibration generated by the washing tub 3 can be reduced. Therefore, it is possible to suppress the occurrence of the failure of the drive mechanism 8, and in particular, the screw 32A and the screw 50A are damaged.
  • the vibration generated by the washing tub 3 during the operation of the washing machine 1 is absorbed by the buffer portion 49 (refer to FIG. 2) of the coupling 34, which is difficult. Transfer to the motor 33. Thereby, the occurrence of the failure of the drive mechanism 8 can be further suppressed.
  • FIG. 4 is a perspective view of a main part of the washing machine 1 according to a modification.
  • the same portions as those already described in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted.
  • only one support portion 31 is provided for cantilever support of the screw shaft 32.
  • the support portion 31 may be provided in a pair in the front-rear direction Y, and the both side portions 32B of the screw shaft 32 in the front-rear direction Y are rotatably supported via the respective bearings 42.
  • the support rigidity of the screw shaft 32 can be improved, whereby the screw shaft 32 itself is less likely to vibrate, and therefore the vibration generated by the washing tub 3 in the washing operation is transmitted to the rotating portion 6, the vibration It is also difficult to transmit to the threaded shaft 32, the coupling 34, and the motor 33. Thereby, occurrence of a failure of the drive mechanism 8 can be suppressed.
  • the configuration in which the screw shaft 32 is supported by both ends of the pair of support portions 31 as in the modified example can be applied to the embodiment of FIGS. 1 to 3 .
  • the both side portions 32B of the threaded shaft 32 supported by the pair of support portions 31 may be both ends of the threaded shaft 32, or may be portions deviated from the center side of the threaded shaft 32 in the front-rear direction Y from the both ends. .
  • the lock releasing mechanism 7 and the recessed portion 6C of the rotating portion 6 can be omitted as long as the movement of the nut member 35 in the front-rear direction Y, that is, the rotation of the washing tub 3, can be restricted when the driving of the motor 33 is stopped. Thereby, the rotation angle ⁇ can be adjusted steplessly.

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

Abstract

一种洗衣机(1)，其能抑制用于使洗涤桶(3)转动的驱动机构(8)的故障发生，其中，该洗涤桶(3)能以与垂直方向(Z)交叉的方式转动。洗衣机(1)包括：洗涤桶(3)，能以与上下方向(Z)交叉的方式转动；转动部(6)，具有沿洗涤桶(3)的转动方向(K)排列的多个凹部(6C)，以能一体转动的方式连接于洗涤桶(3)；以及锁定部(18)，通过嵌入凹部(6C)来锁定转动部(6)的转动。在洗衣机(1)中，与螺纹轴(32)螺纹连接并连接于转动部(6)的螺母构件(35)随着螺纹轴(32)的旋转而沿着螺纹轴(32)的轴向移动，由此使转动部(6)转动。嵌入凹部(6C)的状态的锁定部(18)与转动部(6)的游隙比螺纹轴(32)与螺母构件(35)的游隙小。

Description

洗衣机 技术领域
本发明涉及洗衣机。
背景技术
在下述专利文献1所述的洗衣干衣机中，组装有被投入洗涤物的旋转桶部的外桶部经由倾斜旋转支承轴，由旋转支承板支承。旋转支承板经由吊棒，由洗衣干衣机的外框支承。外桶部设有转动操纵绳安装部，连在转动操纵绳安装部的操纵绳卷绕在设置于外框的倾斜转动电机的卷筒上。随着倾斜转动电机的旋转，操纵绳或上或下，由此，外桶部绕着倾斜旋转支承轴倾斜转动。由此，能在将洗涤物投入旋转桶部时使外桶部横向倾斜，在洗涤、漂洗、脱水时使外桶部立起来沿着垂直方向。
在专利文献1所述的洗衣干衣机中，转动操纵绳安装部、操纵绳、倾斜转动电机之类的用于使外桶部转动的驱动机构有可能受到洗衣干衣机运转过程中产生的振动所引起的碰撞而发生故障。
现有技术文献
专利文献
专利文献1：日本特开平4-166196号公报
发明内容
发明所要解决的问题
本发明是基于该背景而完成的发明，其目的在于提供一种洗衣机，其能抑制用于使洗涤桶转动的驱动机构的故障发生，其中，该洗涤桶能以与垂直方向交叉的方式转动。
用于解决问题的方案
本发明是一种洗衣机，包括：洗涤桶，收容洗涤物，并能以与垂直方向交叉的方式转动；转动部，具有沿所述洗涤桶的转动方向排列的多个凹部，并以 能一体转动的方式连结于所述洗涤桶；锁定部，通过嵌入所述凹部来锁定所述转动部的转动或通过从所述凹部脱离来解除所述转动部的锁定；螺纹轴；电机，使所述螺纹轴旋转；以及螺母构件，与所述螺纹轴螺纹连接并连结于所述转动部，随着所述螺纹轴的旋转而沿着所述螺纹轴的轴向移动，由此使所述转动部转动，嵌入所述凹部的状态的所述锁定部与所述转动部的游隙比所述螺纹轴与所述螺母构件的游隙小。
此外，本发明是一种洗衣机，包括：洗涤桶，收容洗涤物，并能以与垂直方向交叉的方式转动；转动部，以能一体转动的方式连结于所述洗涤桶；螺纹轴；电机，使所述螺纹轴旋转；螺母构件，与所述螺纹轴螺纹连接并连结于所述转动部，随着所述螺纹轴的旋转而沿着所述螺纹轴的轴向移动，由此使所述转动部转动；以及一对支承部，以可旋转的方式支承所述轴向上的所述螺纹轴的两侧部分。
此外，本发明的特征在于，包括连结所述电机的输出轴和所述螺纹轴的联轴器。
此外，本发明的特征在于，所述螺纹轴以及所述螺母构件通过梯形螺纹构成。
发明效果
根据本发明，在洗衣机中，以能一体转动的方式连结于洗涤桶的转动部具有沿洗涤桶的转动方向排列的多个凹部，其中，该洗涤桶能以与垂直方向交叉的方式转动。当通过锁定部嵌入凹部来锁定转动部的转动时，转动方向上的洗涤桶的位置被锁定。另一方面，当通过锁定部从凹部脱离来解除转动部的锁定时，能使洗涤桶转动。
螺纹轴、电机、以及与螺纹轴螺纹连接并连结于转动部的螺母构件构成用于使洗涤桶转动的驱动机构。在驱动机构中，当电机使螺纹轴旋转时，螺母构件沿着螺纹轴的轴向移动，由此使转动部以及洗涤桶转动。
嵌入凹部的状态的锁定部与转动部的游隙比螺纹轴与螺母构件的游隙小。因此，在锁定部嵌入凹部的状态下，即使洗涤运转中由洗涤桶产生的振动传递至转动部，该振动也会被锁定部与转动部的游隙吸收，因此难以传递至螺母构件、螺纹轴、电机。由此，能抑制驱动机构的故障。
此外，根据本发明，在转动部以能一体转动的方式连结于能以与垂直方向 交叉的方式转动的洗涤桶的洗衣机中，螺纹轴、电机、以及与螺纹轴螺纹连接并连结于转动部的螺母构件构成用于使洗涤桶转动的驱动机构。在驱动机构中，当电机使螺纹轴旋转时，螺母构件沿着螺纹轴的轴向移动，由此使转动部及洗涤桶转动。
轴向上的螺纹轴的两侧部分以可旋转的方式由一对支承部支承。由此，能实现螺纹轴的支承刚性的提高，从而螺纹轴自身不易发生振动，因此，即使洗涤运转中由洗涤桶产生的振动传递至转动部，该振动也难以传递至螺纹轴、电机。因此，能抑制驱动机构的故障。
此外，根据本发明，电机的输出轴与螺纹轴通过联轴器连结，因此洗衣机运转中由洗涤桶产生的振动被联轴器吸收，由此难以传递至电机。由此，能进一步抑制驱动机构的故障。
此外，如上所述，根据本发明，由于洗衣机运转中由洗涤桶产生的振动难以传递至驱动机构，因此能抑制通过梯形螺纹构成的螺纹轴以及螺母构件发生损伤。
附图说明
图1是本发明的一实施方式的洗衣机的示意性立体图。
图2是洗衣机所包含的驱动机构的立体图。
图3是洗衣机的主要部分的左视图。
图4是变形例的洗衣机的主要部分的立体图。
附图标记说明
1：洗衣机；3：洗涤桶；6：转动部；6C：凹部；18：锁定部；31：支承部；32：螺纹轴；32B：两侧部分；33：电机；34：联轴器；35：螺母构件；44：输出轴；K：转动方向；Y：前后方向；Z：上下方向。
具体实施方式
以下，参照附图，对本发明的实施方式具体地进行说明。图1是本发明的一实施方式的洗衣机1的示意性立体图。将图1中的上下方向称为洗衣机1的 上下方向Z，将图1中的左右方向称为洗衣机1的前后方向Y，将与图1的纸面大致正交的方向称为左右方向X。上下方向Z也即垂直方向。在上下方向Z当中，将上侧称为上侧Z1，将下侧称为下侧Z2。前后方向Y当中，将图1中的右侧称为前侧Y1，将图1中的左侧称为后侧Y2。左右方向X当中，将图1的纸面的表侧称为左侧X1，将图1的纸面的里侧称为右侧X2。
在洗衣机1中，虽然也包括具有干衣功能的洗衣干衣机，但是以下，以省略了干衣功能，只执行洗涤运转的洗衣机为例对洗衣机1进行说明。洗涤运转包括洗涤过程、漂洗过程以及脱水过程。洗衣机1包括：机壳2、配置于机壳2内的洗涤桶3、支承框架4、吊棒5、转动部6、锁定解除机构7以及驱动机构8。
机壳2为例如金属制，形成为箱状。在机壳2，设置有连接前表面2A和上表面2B的连结面2C。连结面2C是例如随着朝向前侧Y1而下降的倾斜面。用于向洗衣机1内投入取出洗涤物的出入口(未图示)以跨连前表面2A和连结面2C的方式形成。
洗涤桶3包括外桶10和内桶11。外桶10为例如树脂制，形成为有底圆筒状。通过外桶10的圆心的假想直线是外桶10的中心轴J。在洗涤过程、漂洗过程中，外桶10内蓄有水。在外桶10的与底壁(未图示)相反侧的上端部，形成有供投入取出洗衣机1内的洗涤物通过的圆形开口10A。在外桶10的左右的侧面，逐一设置有向左右方向X的外侧突出的金属制的转动轴12。图1中，只图示出左侧X1的转动轴12。这左右一对转动轴12从左右方向X观察时配置于同一位置。
内桶11为例如金属制，形成为比外桶10小一圈的有底圆筒状。洗涤物收容于内桶11。在内桶11的与底壁(未图示)相反侧的上端部，形成有供收容于内桶11内的洗涤物通过的圆形开口11A。内桶11同轴状地收容于外桶10内。因此，内桶11的中心轴即上述的中心轴J。在内桶11收容于外桶10内的状态下，内桶11的开口11A位于外桶10的开口10A的内侧。开口10A以及开口11A与机壳2的出入口(未图示)对置，由此，能向内桶11内投入取出洗涤物。在内桶11的圆周壁11B以及底壁，形成有多个贯通孔11C，外桶10内的水经由这些贯通孔11C，往来于外桶10与内桶11之间。因此，外桶10内的水位与内桶11内的水位一致。在洗涤运转中，内桶11通过接受来自设置于机壳2内的电机(未图示)的驱动力，绕中心轴J旋转。
支承框架4为金属制，包括左右一对侧板13和架设于这一对侧板13的下端部之间的梁构件14。各侧板13从左右方向X观察形成为大致矩形，左右方向X上较薄。在一对侧板13之间配置有洗涤桶3。
对于洗涤桶3的外桶10而言，向左侧X1突出的转动轴12贯通左侧X1的侧板13，并经由轴承(未图示)由左侧X1的侧板13可转动地支承。对于外桶10而言，向右侧X2突出的转动轴12(未图示)贯通右侧X2的侧板13，并经由轴承(未图示)由右侧X2的侧板13可转动地支承。由此，洗涤桶3由支承框架4支承，能以与上下方向Z交叉的方式绕转动轴12转动。具体地说，随着洗涤桶3的转动，外桶10以及内桶11的中心轴J相对于上下方向Z向前后方向Y倾斜。洗涤桶3的转动方向称为转动方向K。
沿着上下方向Z延伸的假想基准轴L与中心轴J的呈锐角的交叉角度为洗涤桶3相对于基准轴L的转动角度θ。转动角度θ越小，洗涤桶3越接近直立姿势，转动角度θ越大，洗涤桶3越是以外桶10的开口10A以及内桶11的开口11A朝向前侧Y1的方式，呈向前侧Y1倾斜的姿势。转动角度θ能以例如5度、15度、30度、45度、60度这五挡进行变更。在这种情况下，作为在洗衣机1中的应用的一个例子，当在洗涤运转开始时将洗涤物投入洗涤桶3时，以使洗涤物的投入变得容易的方式将转动角度θ设定为45度，然后，在检测洗涤物的负荷量或对洗涤桶3进行供水的情况下，转动角度θ设定为5度。然后，在洗涤过程、漂洗过程中，为了促进内桶11内的洗涤物的位置交替以实现高效的洗涤、漂洗，将转动角度θ设定为在5度和60度之间变动。
在左侧X1的侧板13的比转动轴12更靠近下侧Z2的区域，形成有沿着左右方向X贯通该侧板13的开口13A。开口13A形成为前后方向Y上长的大致长方形。在各侧板13的前端缘及后端缘设有向前后方向Y上的外侧突出的接受部15。接受部15可以与侧板13一体形成，也可以作为例如树脂制的其它零部件安装于侧板13。
吊棒5形成为在下端部具有摩擦阻尼器16的棒状。吊棒5存在四根，在从上侧Z1观察的俯视下的机壳2内的四角各配置一根。这些吊棒5处于从机壳2的上部，详细而言从构成机壳2的一部分的金属制外框(未图示)悬吊的状态。在左侧X1前后排列的两根吊棒5当中，前侧Y1的吊棒5的下端部与左侧X1的侧板13的前侧Y1的接受部15连结，后侧Y2的吊棒5的下端部与左侧X1 的侧板13的后侧Y2的接受部15连结。在右侧X2前后排列的两根吊棒5当中，前侧Y1的吊棒5的下端部与右侧X2的侧板13的前侧Y1的接受部15连结，后侧Y2的吊棒5(未图示)的下端部与右侧X2的侧板13的后侧Y2的接受部15(未图示)连结。由此，具有侧板13的支承框架4、由支承框架4支承的洗涤桶3、以及使内桶11旋转的电机(未图示)经由吊棒5，由机壳2弹性支承。
转动部6是左右方向X上薄、从左右方向X观察形成为向前侧Y1膨出的大致扇形的金属制的板。转动部6具有形成为沿着转动方向K的圆弧状并向前侧Y1膨出的外周缘6A。在转动部6的与外周缘6A的曲率中心一致的位置处，形成有沿着左右方向X贯通转动部6的贯通孔6B。在外周缘6A，形成有多个凹部6C，此处为五个。这些凹部6C向贯通孔6B凹陷并且沿着左右方向X贯通转动部6，沿着转动方向K排列配置。相邻凹部6C的间隔即可以固定，也可以因转动部6的位置而异。在本实施方式中，与转动角度θ设定为5度、15度、30度、45度、60度相对应，在图1的姿势下的转动部6中，位于最后侧Y2及其前邻位置的两个凹部6C在转动方向K即以贯通孔6B为中心的圆周方向上间隔10度，其他的相邻凹部6C之间的间隔一律为15度。
转动部6配置于比左侧X1的侧板13更靠近左侧X1。洗涤桶3的外桶10的向左侧X1突出并贯通左侧X1的侧板13的转动轴12插通转动部6的贯通孔6B，固定于转动部6。由此，转动部6经由转动轴12，能一体转动地连结于洗涤桶3。
在图1的姿势下的转动部6，在外周缘6A的后端，一体地设置有往下侧Z2突出，具体而言往以贯通孔6B为中心的转动部6的径向R的外侧突出的延设部6D。延设部6D形成为径向R上长、左右方向X上薄的板状。在延设部6D，形成有径向R上长且沿着左右方向X贯通延设部6D的引导孔6E。引导孔6E的长边方向的两端处于堵塞状态。引导孔6E在上下方向Z上与左侧X1的侧板13的开口13A位于同一位置。无论转动角度θ为5度～60度中的哪个值，引导孔6E都始终从左侧X1与开口13A对置。
锁定解除机构7固定于左侧X1的侧板13的左侧面。锁定解除机构7包括主体部17和锁定部18。在主体部17，设置有由螺线管等构成的促动器(未图示)。锁定部18形成为从主体部17向后侧Y2突出，严格来说向后上侧突出的凸状，由主体部17以向前后方向Y可滑动的方式支承。主体部17的促动器工 作，从而使锁定部18在向最后侧Y2进入的进入位置和向最前侧Y1退出的退出位置之间滑动。
图1的锁定部18位于进入位置。在转动部6的任意一个凹部6C与锁定部18在转动方向K上位于同一位置的情况下，锁定部18通过进入到进入位置，从而嵌入转动方向K上同一位置的凹部6C。由此，转动部6以及洗涤桶3的转动被锁定。在该状态下，当锁定部18退到退出位置时，由于锁定部18离开凹部6C，因此转动部6以及洗涤桶3的锁定被解除。
在图1中，进入位置的锁定部18处于嵌入位于最上侧Z1并且位于最前侧Y1的凹部6C的状态。此时，在转动角度θ(为60度的状态下，转动部6以及洗涤桶3的转动被锁定。随着锁定部18所嵌入的凹部6C变成位于后侧Y2的其它凹部6C，转动角度θ变小，在锁定部18嵌入最后侧Y2的凹部6C的状态下，转动角度θ为5度，该状态下转动部6以及洗涤桶3的转动被锁定。
图2是驱动机构8的立体图。参照图2，驱动机构8包括基座部30、支承部31、螺纹轴32、电机33、联轴器34、螺母构件35以及传感器36。
基座部30例如通过折曲金属板形成，一体地包括纵壁37和上下一对横壁38。纵壁37形成为左右方向X上薄、前后方向Y上长的长方形的板状。横壁38形成为上下方向Z上薄、前后方向Y上长的长方形的板状。一对横壁38当中，上侧Z1的横壁38从纵壁37的上端的整个区域连续并向左侧X1延伸，下侧Z2的横壁38从纵壁37的下端的几乎整个区域连续并向左侧X1延伸。
各个横壁38的左端部作为凸缘部38A，以遍及前后方向Y的整个区域向上下方向Z的外侧折曲成大致直角的方式形成。上侧Z1的横壁38的凸缘部38A以向上侧Z1折曲的方式形成，下侧Z2的横壁38的凸缘部38A以向下侧Z2折曲的方式形成。在各个凸缘部38A，形成有螺纹孔38B。在基座部30形成有由纵壁37和上下一对横壁38包围的收容空间30A。收容空间30A收容有支承部31、螺纹轴32、联轴器34、螺母构件35以及传感器36。
基座部30配置于左侧X1的侧板13与洗涤桶3之间，上下一对凸缘部38A从右侧X2与左侧X1的侧板13的开口13A的周缘部对置配置(参照图1)。组装于左侧X1的侧板13的螺钉39(参照图1)也组装于各凸缘部38A的螺纹孔38B，由此，基座部30固定于左侧X1的侧板13。基座部30的收容空间30A经由开口13A从左侧X1的侧板13向左侧X1露出(参照图1)。
支承部31例如通过折曲金属板来形成，一体地包括主体部40和基座部41。主体部40为前后方向Y上薄的板状，以从基座部30的纵壁37的左侧面向左侧X1突出的方式配置。主体部40安装有从前后方向Y观察呈环状的轴承42，轴承42以至少从主体部40的前表面露出的方式配置。基座部41呈在左右方向X上薄的板状，从主体部40的下端向后侧Y2延伸，以从左侧X1与纵壁37的后端部重叠的方式配置。通过将螺钉43组装于基座部41及纵壁37，支承部31固定于基座部30。
螺纹轴32形成为沿着前后方向Y细长地延伸的圆柱状，在其外周面的几乎整个区域，形成有螺旋状延伸的螺牙32A。需要说明的是，在图2之外的各图中，为了便于说明，省略了螺纹轴32的螺牙32A的图示。螺纹轴32的后端部插入支承部31的环状的轴承42。在该状态下，螺纹轴32由支承部31可自转地悬臂支承。
电机33是普通的电动电机，具有向后侧Y2突出并与螺纹轴32同轴状配置的输出轴44。电机33从后侧Y2安装有前后方向Y上薄的板状的托架45。输出轴44从托架45向后侧Y2露出，从前侧Y1与螺纹轴32的前端部对置配置。输出轴44从托架45向后侧Y2露出，从前侧Y1与螺纹轴32的前端部对置配置。托架45的左端部的上端部以及下端部作为上下一对凸缘部45A向后侧Y2折曲成大致直角，在各个凸缘部45A，形成有螺纹孔45B。
电机33在比基座部30更靠近前侧Y1处，配置于左侧X1的侧板13与洗涤桶3之间，托架45的各个凸缘部45A从右侧X2与左侧X1的侧板13的开口13A的周缘部对置配置(参照图1)。通过将组装于左侧X1的侧板13的螺钉46(参照图1)也组装在各个凸缘部45A的螺纹孔45B，电机33经由托架45固定于左侧X1的侧板13。该状态的电机33经由开口13A从左侧X1的侧板13向左侧X1露出(参照图1)。
联轴器34包括：以能一体旋转的方式外嵌于电机33的输出轴44的后端部的筒状的输出部47、以能一体旋转的方式外嵌于螺纹轴32的前端部的筒状的输入部48、以及配置于输出部47与输入部48之间的缓冲部49。筒状的输出部47具有多个沿着其圆周方向排列并向后侧Y2突出的突出部47A。筒状的输入部48具有多个沿着其圆周方向排列并向前侧Y1突出的突出部48A。突出部47A和突出部48A处于在输出部47以及输入部48的圆周方向上逐一交替排列的状 态。在相邻的突出部47A与突出部48A之间，配置有缓冲部49。缓冲部49由橡胶、弹簧等弹性体构成。输出轴44和螺纹轴32经由联轴器34能一体旋转地连结。因此，当电机33被驱动从而输出轴44旋转时，螺纹轴32与输出轴44一体旋转。
螺母构件35包括主体部50、连结部51、以及被检测部52。主体部50构成在内周面形成有螺旋状延伸的螺纹50A(参照后述的图3)的环状的螺母，以该螺纹50A与螺纹轴32的螺牙32A相互螺纹连接的方式，外嵌于螺纹轴32。当螺纹轴32随着电机33的驱动而旋转时，随着螺纹轴32的旋转，螺母构件35整体沿着螺纹轴32的轴向即前后方向Y移动。
连结部51例如通过折曲金属板形成，一体地具有第一部51A、第二部51B、以及第三部51C。第一部51A形成为前后方向Y上薄且向上下方向Z延伸的板状，通过螺钉53固定于主体部50。第二部51B形成为左右方向X上薄且向上下方向Z延伸的板状，从第一部51A的左端缘向前侧Y1突出，从左侧X1与主体部50对置。在第二部51B，形成有沿着左右方向X贯通第二部51B的贯通孔51D。
第二部51B从右侧X2与转动部6的延设部6D对置，在贯通孔51D，插入有从左侧X1插入延设部6D的引导孔6E的连结销54(参照图1)。连结销54不能从各个贯通孔51D以及引导孔6E取下，螺母构件35经由连结销54与转动部6连结。因此，当螺母构件35随着螺纹轴32的旋转而沿着前后方向Y移动时，转动部6通过螺母构件35被拉向前后方向Y，从而随着洗涤桶3转动。当转动部6转动时，连结销54在引导孔6E内沿着引导孔6E的长边方向移动。第三部51C形成为上下方向Z上薄的板状，从第一部51A的下端缘向前侧Y1突出，从下侧Z2与主体部50对置。
被检测部52形成为左右方向X上薄的板状，一体地具有固定部52A和前端部52B。固定部52A以从下侧Z2与连结部51的第三部51C重叠的方式配置，并通过螺钉55固定于第三部51C。前端部52B以从固定部52A的前端部向右侧X2延伸的方式形成。
传感器36是根据前后方向Y的螺母构件35的位置检测洗涤桶3的转动角度θ的传感器，作为传感器36，能使用光传感器等光学传感器。当使用光传感器时，在传感器36的左侧面，形成有沿着前后方向Y贯通传感器36的槽36A， 传感器36处于检测光沿着上下方向Z横切槽36A的状态。传感器36的数目与转动部6的凹部6C的数目相同，换句话说，在本实施方式中存在五个，各个槽36A以从前后方向Y观察时重叠的方式，在基座部30的纵壁37的下侧区域沿着前后方向Y排列配置。各个传感器36通过螺钉56固定于纵壁37。相邻传感器36的间隔以与相邻凹部6C的间隔对应的方式设定。因此，在本实施方式中，虽然后侧Y2的四个传感器36中相邻传感器36之间的间隔固定，但是位于最前侧Y1及其后邻位置的两个传感器36的间隔比其他相邻传感器36之间的间隔窄。
当螺母构件35随着螺纹轴32的旋转而沿着前后方向Y移动时，设置于螺母构件35的被检测部52的前端部52B穿过各个传感器36的槽36A。在前端部52B嵌入槽36A的状态下，该槽36A的检测光被前端部52B遮住。
如图2所示，在被检测部52的前端部52B嵌入最后侧Y2的传感器36的槽36A的状态下，上述的锁定部18位于最上侧Z1并且在转动方向K上与最前侧Y1的凹部6C处于同一位置，洗涤桶3的转动角度θ为60度(参照图1)。另一方面，在被检测部52的前端部52B嵌入最前侧Y1的传感器36的槽36A的状态下，锁定部18与图1的最后侧Y2的凹部6C在转动方向K上位于同一位置，洗涤桶3的转动角度θ为5度。当转动角度θ为5度、15度、30度、45度、60度中的任一个角度时，被检测部52的前端部52B处于嵌入某一个传感器36的槽36A的状态。因此，五个传感器36统一检测转动角度θ是5度、15度、30度、45度、60度中的哪一个。
图3是洗衣机1的主要部分、具体而言是支承框架4的左侧X1的侧板13及其周边部分的左视图。在图3中，螺纹轴32的左侧部分和螺母构件35以剖面线剖面示出，转动部6的延设部6D及其周边部分的图示被省略。在图3中，虽一并示出了由点划线圆包围的部分的放大图和由虚线圆包围的部分的放大图，但在这些放大图中比例尺不同。
图3中由点划线圆包围的部分的放大图示出了进入位置的锁定部18嵌入转动部6的某个凹部6C的状态。对于凹部6C，对底部赋予标记6F，对转动方向K的从底部6F的两端朝向转动部6的外周缘6A往径向R延伸的一对侧面赋予标记6G。嵌入凹部6C的状态的锁定部18与转动部6的游隙由间隙60和间隙61构成，其中，间隙60为凹部6C的底部6F与锁定部18的径向R上的间隙， 间隙61为各侧面6G与锁定部18的转动方向K上的间隙。由于一对侧面6G形成为以彼此接近的方式凸弯曲，因此侧面6G的最突出部分与锁定部18的间隙61小到等于零。
需要说明的是，在锁定部18的前端部的转动方向K上的两端，设有随着朝向凹部6C的底部6F侧而彼此接近的一对倾斜面18A，在凹部6C的一对侧面6G的离底部6F最远的端部，设有随着远离底部6F而彼此远离的一对倾斜面6H。锁定部18的进入通过倾斜面18A以及倾斜面6H来引导，由此，锁定部18能顺利地嵌入凹部6C。
图3中由虚线圆包围的部分的放大图示出了螺纹连接状态的螺纹轴32以及螺母构件35。螺纹轴32的螺牙32A和螺母构件35的主体部50的螺牙50A具有梯形的截面。因此，螺纹轴32及螺母构件35通过梯形螺纹构成。螺纹轴32与螺母构件35的游隙由相邻的螺牙32A与螺牙50A的前后方向Y上的间隙62构成。
上述的间隙60及间隙61设定为比间隙62小。也就是说，嵌入凹部6C的状态的锁定部18与转动部6的游隙比螺纹轴32与螺母构件35的游隙小。因此，在锁定部18嵌入凹部6C的状态下，即使洗涤运转中由洗涤桶3产生的振动传递至转动部6，该振动也会被锁定部18与转动部6的游隙吸收，因此难以传递至螺母构件35、螺纹轴32、联轴器34、电机33。由此，能降低驱动机构8因洗涤桶3所产生的振动而承受的负担，因此能抑制驱动机构8的故障发生，特别是螺牙32A、螺牙50A发生损伤。
此外，由于电机33的输出轴44与螺纹轴32通过联轴器34连结，因此洗衣机1运转过程中由洗涤桶3产生的振动被联轴器34的缓冲部49(参照图2)吸收，难以传递至电机33。由此，能进一步抑制驱动机构8的故障发生。
图4是变形例的洗衣机1的的主要部分的立体图。在图4中，对与图1～图3中已经说明过的部分相同的部分赋予相同的附图标记，省略关于该部分的说明。在图1～图3的实施方式中，仅设有一个的支承部31对螺纹轴32进行悬臂支承。如图4所示的变形例，支承部31可以在前后方向Y分离设置一对，并经由各轴承42以可旋转的方式支承前后方向Y上的螺纹轴32的两侧部分32B。在该情况下，能实现螺纹轴32的支承刚性的提高，由此，螺纹轴32自身不易发生振动，因此即使洗涤运转中由洗涤桶3产生的振动传递至转动部6，该振动 也难以传递至螺纹轴32、联轴器34、电机33。由此，能抑制驱动机构8的故障发生。
需要说明的是，像变形例那样由一对支承部31两端支承螺纹轴32的结构也能适用于图1～图3的实施方式。此外，螺纹轴32的由一对支承部31支承的两侧部分32B既可以是螺纹轴32的两端，也可以是从该两端向前后方向Y上的螺纹轴32的中央侧偏离的部分。此外，可以存在三个以上支承部31。
本发明不限定于以上说明的实施方式，可以在权利要求记载的范围内进行各种变更。
例如，只要是能在电机33的驱动停止时限制前后方向Y上的螺母构件35的移动即洗涤桶3的转动的结构，就可以省略锁定解除机构7、转动部6的凹部6C。由此，能无级调整转动角度θ。

Claims (4)

  1. 一种洗衣机，包括：
    洗涤桶，收容洗涤物，并能以与垂直方向交叉的方式转动；
    转动部，具有沿所述洗涤桶的转动方向排列的多个凹部，并以能一体转动的方式连结于所述洗涤桶；
    锁定部，通过嵌入所述凹部来锁定所述转动部的转动或通过从所述凹部脱离来解除所述转动部的锁定；
    螺纹轴；
    电机，使所述螺纹轴旋转；以及
    螺母构件，与所述螺纹轴螺纹连接并连结于所述转动部，随着所述螺纹轴的旋转而沿着所述螺纹轴的轴向移动，由此使所述转动部转动，
    嵌入所述凹部的状态的所述锁定部与所述转动部的游隙比所述螺纹轴与所述螺母构件的游隙小。
  2. 一种洗衣机，包括：
    洗涤桶，收容洗涤物，并能以与垂直方向交叉的方式转动；
    转动部，以能一体转动的方式连结于所述洗涤桶；
    螺纹轴；
    电机，使所述螺纹轴旋转；
    螺母构件，与所述螺纹轴螺纹连接并连结于所述转动部，随着所述螺纹轴的旋转而沿着所述螺纹轴的轴向移动，由此使所述转动部转动；以及
    一对支承部，以可旋转的方式支承所述轴向上的所述螺纹轴的两侧部分。
  3. 根据权利要求1或2所述的洗衣机，其中，
    包括：联轴器，连结所述电机的输出轴和所述螺纹轴。
  4. 根据权利要求1～3中任一项所述的洗衣机，其中，
    所述螺纹轴以及所述螺母构件通过梯形螺纹构成。
PCT/CN2016/096687 2015-08-25 2016-08-25 洗衣机 WO2017032324A1 (zh)

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