WO2017032325A1 - 洗衣机 - Google Patents

洗衣机 Download PDF

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Publication number
WO2017032325A1
WO2017032325A1 PCT/CN2016/096688 CN2016096688W WO2017032325A1 WO 2017032325 A1 WO2017032325 A1 WO 2017032325A1 CN 2016096688 W CN2016096688 W CN 2016096688W WO 2017032325 A1 WO2017032325 A1 WO 2017032325A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating
sensor
threaded shaft
nut member
tub
Prior art date
Application number
PCT/CN2016/096688
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 EP16838583.9A priority Critical patent/EP3342913A4/en
Priority to KR1020187008139A priority patent/KR102090011B1/ko
Priority to CN201680047860.8A priority patent/CN107923100B/zh
Priority to US15/755,053 priority patent/US20180237974A1/en
Publication of WO2017032325A1 publication Critical patent/WO2017032325A1/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 
    • 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 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.
  • a rotary steering rope mounting portion is provided in the outer tub portion, and a control cord attached to the rotary steering rope mounting portion is wound around a 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 member for arranging the drive mechanism for rotating the tub portion such as the steering cord mounting portion and the steering rope may be freely moved when the drive mechanism is assembled. Thereby colliding with the surrounding components, thereby damaging the surrounding components.
  • 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 preventing damage of surrounding members due to a member of a driving mechanism for rotating a washing tub, wherein the washing tub can Rotate in a way that intersects the vertical direction.
  • the present invention relates to 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, a shelter a threaded shaft is rotated; 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 rotating portion a support portion rotatably supporting the threaded shaft; a base portion to which the support portion is fixed; and a detected portion provided on the nut member for detecting a rotation angle of the rotating portion;
  • the rotation protrusion is provided on the nut member, and the sensor detects the detected portion; and the regulating portion is formed in the base portion and extends linearly along the axial direction to incorporate the rotation preventing projection.
  • the present invention is characterized in that the restricting portion is formed in a groove shape, and a portion of the base portion that locks an end portion of the restricting portion in the axial direction is disposed in the nut member and the seat The position at which the support portion comes into contact with the rotation preventing projection from the axial direction before the contact portion contacts.
  • the present invention is characterized in that the base portion includes a vertical wall and a lateral wall extending laterally from the vertical wall and having the sensor attached thereto, and is arranged side by side in the washing tub.
  • the present invention is characterized in that the sensor is a non-contact sensor that detects the detected portion in a non-contact manner.
  • the rotating portion in the washing machine in which the rotating portion is integrally coupled to the washing tub capable of rotating in a manner intersecting with the vertical direction, the threaded shaft, the motor, and the nut member screwed to the threaded shaft and coupled to the rotating portion
  • a drive mechanism for rotating the washing tub is constructed.
  • the sensor can detect the rotation angle of the rotating portion by detecting the detected portion provided on the nut member.
  • the base portion to which the support portion for rotatably supporting the screw shaft is fixed is formed with a restricting portion that linearly extends in the axial direction, and the rotation preventing projection provided on the nut member is incorporated in the restricting portion.
  • the movement of the rotation preventing projection is restricted by the restricting portion of the base portion, whereby the nut member cannot rotate about the screw shaft, and therefore, it is possible to prevent the detected portion from colliding with the sensor. As a result, it is possible to prevent the sensor from being caused by the detected portion The damage occurred.
  • the restricting portion may be formed in a groove shape.
  • the portion of the base portion that locks the end portion of the restricting portion in the axial direction is disposed at a position that comes into contact with the rotation preventing projection from the axial direction before the nut member comes into contact with the supporting portion, it can be prevented.
  • the damage of the support portion occurs due to the collision of the nut member with the support portion.
  • the base portion disposed in the washing tub in the lateral direction is attached with a sensor on a lateral wall extending laterally from the vertical wall.
  • the front end portion of the fastener such as a screw for attaching the sensor to the lateral wall is exposed from the lateral wall to the upper side or the lower side.
  • the front end portion of the fastener does not protrude laterally from the vertical wall. Therefore, it is possible to prevent the front end portion of the fastener from coming into contact with the washing tub, and it is possible to achieve space saving in the lateral direction.
  • the senor in the case where the sensor is a non-contact sensor, it is possible to prevent the sensor from being damaged due to the detected portion.
  • 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 a washing machine.
  • Figure 3 is a left side view of the drive mechanism.
  • Fig. 4 is a cross-sectional view taken along line A-A of Fig. 3;
  • Figure 5 is a plan view of the drive mechanism.
  • Fig. 6 is a left side view of the drive mechanism of the modification.
  • Fig. 7 is a cross-sectional view taken along line B-B of Fig. 6;
  • washing machine 1: washing machine; 3: washing tub; 6: rotating portion; 30: base portion; 31: support portion; 32: threaded shaft; 33: motor; 35: nut member; 36: sensor; 37: vertical wall; Horizontal wall; 38C: restricting portion; 38F: front peripheral portion; 38G: rear peripheral portion; 51D: anti-rotation projection; 52: detected portion; X: left-right direction; Y: front-rear direction; Z: up-and-down direction; The angle of rotation.
  • FIG. 1 is a schematic perspective view of a washing machine 1 according to an embodiment of the present invention.
  • the vertical direction in FIG. 1 is referred to as the vertical direction Z of 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 horizontal 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 dehydrating 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.
  • Water is stored in the outer tub 10 during the washing process or the rinsing process.
  • 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. Only the rotational axis 12 of the left side X1 is illustrated in FIG.
  • 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.
  • An upper end portion of the inner tub 11 on the side opposite to the bottom wall (not shown) is formed with a circular opening 11A through which the laundry accommodated in the inner tub 11 passes.
  • 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 can pass 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 rotates around 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 protruding 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 rotatable by a side plate 13 of the right side X2 via a bearing (not shown).
  • Way support Thereby, 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 lower end portion is coupled to the receiving portion 15 of the rear side Y2 of the side plate 13 of the left side X1.
  • 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 so as to be integrally rotatable 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 in the up and down direction Z and the side plate 13 of the left side X1
  • the opening 13A is located at the same position. 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.
  • the actuator of the main body portion 17 operates to slide the lock portion 18 between the entry position that enters the last side Y2 and the exit position that exits toward 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, and the flange portion 38A of the lateral wall 38 of the lower side Z2 is folded to 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.
  • a restricting portion 38C is formed in a portion of the lateral wall 38 of the upper side Z1 that is closer to the right side X2 than the flange portion 38A.
  • the restricting portion 38C is formed in a groove shape that extends linearly in the front-rear direction Y. Therefore, the longitudinal direction of the restricting portion 38C is the front-rear direction Y, and the short-side direction of the restricting portion 38C is the left-right direction X.
  • the restricting portion 38C is formed to penetrate the lateral wall 38 of the upper side Z1 in the vertical direction Z.
  • the restricting portion 38C may be a recessed portion that is not recessed toward the upper side Z1 of the lateral wall 38.
  • the base portion 30 is formed with an opening 30B in which the lateral wall 38 of the upper side Z1 continuously cuts away from the portion of the restriction portion 38C closer to the right side X2 and the upper end portion of the vertical wall 37. Since the base portion 30 is partially removed through the opening 30B, the entire base portion 30 can be made lighter.
  • the base portion 30 is disposed between the side plate 13 on the left side X1 and the washing tub 3 so as to be parallel to the washing tub 3 in the left-right direction X, and the pair of upper and lower flange portions 38A are from the right side X2 and the side plate on the left side X1.
  • the peripheral edge portion of the opening 13A of 13 is disposed to face each other (see FIG. 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 provided in a pair in the front-rear direction Y, the support portion 31 on the front side Y1 is disposed at the front end portion of the vertical wall 37 of the base portion 30, and the support portion 31 on the rear side Y2 is disposed at the rear end portion of the vertical wall 37. .
  • Each of the support portions 31 is formed, for example, by bending a metal plate.
  • Each of the support portions 31 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 to protrude from the left side surface of the vertical wall 37 of the base portion 30 toward the left side X1.
  • a bearing 42 that is annular as viewed from the front-rear direction Y is attached so as to penetrate the main body portion 40 in the front-rear direction Y.
  • the base portion 41 has a thin plate shape in the left-right direction X.
  • the support portion 31 of the front side Y1 is disposed such that the base portion 41 extends from the lower end to the front side Y1 of the main body portion 40, and overlaps the front end portion of the vertical wall 37 as viewed from the left side X1.
  • the support portion 31 of the rear side Y2 is disposed such that the base portion 41 extends from the lower end of the main body portion 40 toward the rear side Y2, and overlaps the rear end portion of the vertical wall 37 as viewed from the left side X1.
  • Each of the support portions 31 is fixed to the base portion 30 by assembling the screws 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 almost on the outer peripheral surface thereof A spiral extending screw 32A is formed over the entire area.
  • 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 of the rear side Y2. In this state, the threaded shaft 32 is supported by the pair of front and rear support portions 31 so as to be rotatable.
  • 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.
  • the output shaft 44 faces the front side Y1 and a portion of the front end portion of the screw shaft 32 that protrudes from the main body portion 40 of the support portion 31 of the front side Y1 toward the front side Y1.
  • the upper end portion and the lower end portion of the left end portion of the bracket 45 are formed as a pair of upper and lower flange portions 45A, and are bent at a substantially right angle toward the rear side Y2, 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 in a state of being alternately arranged one by one in the circumferential direction of the output portion 47 and the input portion 48.
  • 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 coupled to each other via a coupling 34 so as to be rotatable together. 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 50A (see FIG. 4 described later) is formed on the inner peripheral surface, and the screw 50A and the screw 32A of the screw shaft 32 are screwed to each other. Externally embedded in the threaded shaft 32.
  • 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 upper end edge of the first portion 51A is integrally provided with a rotation preventing projection 51D that protrudes toward the upper side Z1, and the rotation preventing projection 51D is incorporated in the restricting portion 38C of the lateral wall 38 of the upper side Z1 of the base portion 30 (refer to FIG. 4). .
  • 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, and protrudes from the left end edge of the first portion 51A toward the front side Y1, and protrudes from the accommodating space 30A of the base portion 30 to the left side X1.
  • the arrangement is opposed to the main body portion 50 from the left side X1 (see also FIG. 4).
  • a through hole 51E 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 51E.
  • the coupling pin 54 cannot be removed from each of the through holes 51E and the guide holes 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 also referred to as a stopper portion, and is formed in a rod shape extending from the distal end portion of the fixed portion 52A toward 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 non-contact sensor such as a photosensor can be used.
  • a groove 36A that is recessed toward the right side X2 and penetrates the sensor 36 in the front-rear direction Y is formed on the left side surface of the sensor 36, and 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 screwed 56 is fixed to the vertical wall 37.
  • the front end portion 56A of the screw 56 is disposed to protrude from the vertical wall 37 to the right side X2 (refer to FIG. 4).
  • the interval between adjacent sensors 36 is set so as to correspond to the interval between adjacent recesses 6C.
  • 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 front end portion 52B of the detected portion 52 provided to the nut member 35 passes through the groove 36A of each sensor 36.
  • the detection light of the groove 36A is blocked by the front end portion 52B in a state where the front end portion 52B is fitted into the groove 36A, the front end portion 52B does not come into contact with the sensor 36 when passing through the groove 36A.
  • 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 one of the 5°, 15 degrees, 30 degrees, 45 degrees, and 60 degrees the rotation angle ⁇ is by detecting the detected portion 52 of the nut member 35 in a non-contact manner.
  • each sensor 36 includes a groove bottom 36B and a pair of groove side faces 36C, wherein the groove bottom 36B defines a groove 36A from the right side X2, and a pair of groove side faces 36C extend in parallel from the groove bottom 36B toward the left side X1.
  • the groove bottom 36B is stretched between the right end edges of the pair of groove side faces 36C, and the groove bottom 36B and the pair of groove side faces 36C constitute the outline of the groove 36A when viewed from the front-rear direction Y.
  • the distal end portion 52B of the detected portion 52 in a state of being fitted into the groove 36A from the left side X1 is disposed away from both the groove bottom 36B and the groove side surface 36C.
  • the gap between each of the groove bottom 36B and the groove side surface 36C and the front end portion 52B is referred to as a gap 60.
  • the rotation preventing projection 51D is inserted into the regulating portion 38C of the lateral wall 38 of the upper side Z1 of the base portion 30 from the lower side Z2 so as to have a slight play in the short side direction of the regulating portion 38C, that is, in the left-right direction X. Therefore, between the left peripheral edge portion 38D and the rotation preventing projection 51D of the lateral wall 38 that locks the restricting portion 38C from the left side X1 A gap 61 is provided, and a gap 62 is provided between the right peripheral edge portion 38E and the rotation preventing projection 51D of the lateral wall 38 that locks the regulating portion 38C from the right side X2, and the gap 61 and the gap 62 are smaller than the gap 60.
  • the play of the rotation preventing projection 51D in the short side direction of the restricting portion 38C is smaller than the clearance of the detected portion 52 in the groove 36A of the sensor 36.
  • the dimension in the left-right direction X of each of the gap 61 and the gap 62 is smaller than the dimension in the left-right direction X of the gap 60 between the groove bottom 36B and the tip end portion 52B, and is smaller than the gap 60 between the groove side surface 36C and the front end portion 52B.
  • the size in the up and down direction Z is small.
  • the nut member 35 When the drive mechanism 8 is assembled, the nut member 35 may be in a free state with respect to the threaded shaft 32. In this case, it is conceivable that the nut member 35 is wound around the state in which the detected portion 52 is fitted into the groove 36A of the sensor 36. The threaded shaft 32 is free to rotate. Further, it is conceivable that the nut member 35 is rotated about the threaded shaft 32 due to vibration during the washing operation of the washing machine 1, particularly during the dehydration process. When the nut member 35 rotates, the front end portion 52B of the detected portion 52 that sways in the up-and-down direction Z as the nut member 35 rotates may collide with the groove bottom 36B of the sensor 36 and the groove side surface 36C, resulting in the detection being detected. The sensor 36 around the portion 52 is damaged.
  • the rotation preventing projection 51D provided in the nut member 35 is incorporated in the restricting portion 38C formed in the base portion 30 and extending linearly in the front-rear direction Y, and the rotation of the restricting portion 38C in the short-side direction is stopped.
  • the play of the protrusion 51D is set to be smaller than the play of the detected portion 52 in the groove 36A of the sensor 36.
  • the rotation preventing projection 51D comes into contact with the left peripheral edge portion 38D and the right peripheral edge portion 38E which are the peripheral edge portions of the regulating portion 38C of the base portion 30, and thus the restriction
  • the movement of the rotation preventing projection 51D in the short side direction of the portion 38C is restricted.
  • the nut member 35 cannot rotate around the screw shaft 32, and therefore, the detected portion 52 can be prevented from colliding with the sensor 36.
  • FIG. 5 is a plan view of the drive mechanism 8.
  • a portion of the lateral wall 38 of the upper side Z1 of the base portion 30 that locks the end portion of the restricting portion 38C in the front-rear direction Y includes a front peripheral portion 38F that locks the front end of the restricting portion 38C.
  • a rear side peripheral portion 38G that locks the rear end of the restricting portion 38C.
  • the front side peripheral edge portion 38F is disposed at a position where the forward nut member 35 comes into contact with the rotation preventing projection 51D from the front side Y1 before coming into contact with the support portion 31 (see FIG. 2) of the front side Y1.
  • the rear side peripheral edge portion 38G is disposed at a position that comes into contact with the rotation preventing projection 51D from the rear side Y2 before the retracted nut member 35 comes into contact with the support portion 31 (see FIG. 2) of the rear side Y2. Therefore, the front side peripheral portion 38F is located at least before The main body portion 40 (see FIG. 2) of the support portion 31 of the side Y1 is closer to the rear side Y2, and the rear peripheral edge portion 38G is located at least closer to the main body portion 40 (see FIG. 2) of the support portion 31 of the rear side Y2. The position of the side Y1.
  • the front side peripheral edge portion 38F and the rear side peripheral edge portion 38G are first brought into contact with the rotation preventing projection 51D as the stopper portion before the nut member 35 comes into contact with the support portion 31. Therefore, the nut member 35 and the support portion 31 can be prevented from being prevented.
  • the bearing portion 31 (see FIG. 2) provided in the support portion 31 is deformed by the collision and is damaged.
  • Fig. 6 is a left side view of the drive mechanism 8 of the modification.
  • Fig. 7 is a cross-sectional view taken along line B-B of Fig. 6;
  • the same portions as those described in FIGS. 1 to 5 are denoted by the same reference numerals, and the description thereof will be omitted.
  • the sensor 36 is attached to the vertical wall 37 in the above-described embodiment, it may be attached to one of the upper and lower pair of lateral walls 38 as in the modification shown in FIGS. 6 and 7 .
  • the sensor 36 is attached to the lateral wall 38 of the lower side Z2 from the upper side Z1 in a posture in which the groove 36A faces the upper side Z1.
  • the front end portion 56A of the screw 56 for attaching the sensor 36 to the lateral wall 38 penetrates the sensor 36 and the lateral wall 38 of the lower side Z2 from the upper side Z1, and goes from the lateral wall 38 toward the lower side Z2. Exposed. Thereby, the front end portion 56A of the screw 56 does not protrude from the vertical wall 37 in the left-right direction X. Therefore, the front end portion 56A of the screw 56 can be prevented from coming into contact with the washing tub 3, and space saving in the left-right direction X can be achieved.
  • the senor 36 is attached to the lateral wall 38 of the upper side Z1 from the lower side Z2 in a posture in which the groove 36A faces the lower side Z2, the sensor 36 is attached to the lateral wall 38 of the upper side Z1.
  • the front end portion 56A of the screw 56 is exposed from the lateral wall 38 of the upper side Z1 toward the upper side Z1.
  • the senor 36 is not limited to the above-described non-contact sensor, and may be a contact sensor.
  • the rotation of the nut member 35 about the screw shaft 32 is restricted, and therefore, the detected portion 52 of the nut member 35 and the sensor 36 can be prevented from coming into contact with each other to the extent that the sensor 36 is broken. .
  • the restricting portion 38C of the base portion 30 that is incorporated in the rotation preventing projection 51D of the nut member 35 may be formed not on the lateral wall 38 of the upper side Z1 but also on the lateral wall 38 of the lower side Z2, and may be formed on the vertical wall. 37.
  • the detected portion 52 may not be attached to the third portion 51C of the coupling portion 51 of the nut member 35, but the third portion 51C itself may function as the detected portion 52.
  • a fastener such as a rivet may be used instead of the screw described above.

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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)

Abstract

一种洗衣机(1)，其能防止因用于使洗涤桶(3)转动的驱动机构(8)的构件而导致周围的构件损坏的情况发生，其中，该洗涤桶(3)能以与垂直方向交叉的方式转动。转动部(6)以能一体转动的方式与洗涤桶(3)连结，螺母构件(35)与该转动部(6)连结，并与螺纹轴(32)螺纹连接，随着螺纹轴(32)的旋转而沿着前后方向(Y)移动，由此使转动部(6)转动。以能旋转的方式支承螺纹轴(32)的支承部(31)固定于基座部(30)。设于螺母构件(35)并用于检测转动部(6)的转动角度的被检测部(52)由传感器(36)来检测。设于螺母构件(35)的止转突起(51D)被纳入形成于基座部(30)并沿着前后方向(Y)呈直线状延伸的限制部(38C)。

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。在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。
专利文献1所述的洗衣干衣机中，转动操纵绳安装部、操纵绳之类的构成用于使外桶部转动的驱动机构的构件在组装驱动机构时等情况下，有可能会随意移动从而碰撞周围的构件，从而损坏该周围的构件。
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，其能防止因用于使洗涤桶转动的驱动机构的构件而导致周围的构件损坏的情况发生，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，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；支承部，以能旋转的方式支承所述螺纹轴；基座部，固定有所述支承部；被检测部，设于所述螺母构件，用于检测所述转动部的转动角度；止转突起，设于所述螺母构件；传感器，检测所述被检测部；以及限制部，形成于所述基座部，沿着所述轴向呈直线状延伸，纳入所述止转突起。
此外，本发明的特征在于，所述限制部形成为槽状，所述基座部的将所述轴向上的所述限制部的端部锁边的部分配置于在所述螺母构件与所述支承部接触之前先从所述轴向与所述止转突起接触的位置。
此外，本发明的特征在于，所述基座部包括纵壁和从所述纵壁横向延伸并安装有所述传感器的横壁，并沿横向排列配置于所述洗涤桶。
此外，本发明的特征在于，所述传感器是以非接触的方式检测所述被检测部的非接触传感器。
发明效果
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。对于驱动机构而言，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。传感器通过检测设于螺母构件的被检测部，从而能检测转动部的转动角度。
当螺母构件在传感器位于被检测部的周围的状态下绕着螺纹轴随意旋转时，被检测部有可能会与传感器碰撞，导致传感器被损坏。因此，在固定有以能旋转的方式支承螺纹轴的支承部的基座部，形成有沿着轴向呈直线状延伸的限制部，设于螺母构件的止转突起被纳入限制部。该情况下，止转突起的移动被基座部的限制部限制，由此螺母构件无法绕着螺纹轴旋转，因此，能防止被检测部与传感器碰撞的情况发生。其结果是，能防止因被检测部而导致传感器 损坏的情况发生。
此外，根据本发明，限制部可以形成为槽状。这种情况下，由于基座部的将轴向上的限制部的端部锁边的部分配置于在螺母构件与支承部接触之前先从轴向与止转突起接触的位置，因此，能防止因螺母构件与支承部碰撞而导致支承部损坏的情况发生。
此外，根据本发明，沿着横向排列配置于洗涤桶的基座部在从纵壁往横向延伸的横壁安装有传感器。该情况下，用于将传感器安装于横壁的螺钉等紧固件的前端部从横壁向上侧或下侧露出。由此，紧固件的前端部不会从纵壁往横向伸出，因此，能防止紧固件的前端部与洗涤桶接触，能实现横向的省空间化。
此外，根据本发明，在传感器是非接触传感器的情况下，能防止因被检测部而导致传感器损坏的情况发生。
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是包含于洗衣机的驱动机构的立体图。
图3是驱动机构的左视图。
图4是图3的A-A剖视图。
图5是驱动机构的俯视图。
图6是变形例的驱动机构的左视图。
图7是图6的B-B剖视图。
附图标记说明
1：洗衣机；3：洗涤桶；6：转动部；30：基座部；31：支承部；32：螺纹轴；33：电机；35：螺母构件；36：传感器；37：纵壁；38：横壁；38C：限制部；38F：前侧周缘部；38G：后侧周缘部；51D：止转突起；52：被检测部；X：左右方向；Y：前后方向；Z：上下方向；θ：转动角度。
具体实施方式
以下，参照附图，对本发明的实施方式进行具体说明。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的纸面大致正交的横方向称为左右方向X。上下方向Z也即垂直方向。上下方向Z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、漂洗过程和脱水过程。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包含外桶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。在洗涤过程或漂洗过程中，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过。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内的水能经由这些贯通孔11C，往来于外桶10和内桶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通过接受来自设于机壳2内的电机(未图示)的驱动力，绕着中心轴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以能转动的方式支承。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以能转动的方式支承。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，以能一体转动的方式连结于洗涤桶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以能向前后方向Y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进入的进入位置与向最前侧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。
在上侧Z1的横壁38的比凸缘部38A更靠近右侧X2的部分，形成有限制部38C。限制部38C形成为沿着前后方向Y呈直线状细长地延伸的槽状。因此，限制部38C的长边方向为前后方向Y，限制部38C的短边方向为左右方向X。限制部38C在本实施方式中，沿着上下方向Z贯通上侧Z1的横壁38而形成，但也可以是不贯通横壁38地向上侧Z1凹陷的凹部。在基座部30形成有在上侧Z1的横壁38将比限制部38C更靠近右侧X2的部分和纵壁37的上端部连续切去的开口30B。由于基座部30通过开口30B而去除了一部分，因此能实现基座部30整体的轻量化。
基座部30以沿左右方向X与洗涤桶3并排的方式配置于左侧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沿着前后方向Y分离设置有一对，前侧Y1的支承部31配置于基座部30的纵壁37的前端部，后侧Y2的支承部31配置于纵壁37的后端部。各个支承部31例如通过折曲金属板而形成。各个支承部31一体式地包括主体部40和基部41。主体部40是在前后方向Y上薄的板状，配置成从基座部30的纵壁37的左侧面向左侧X1突出。在主体部40，以沿着前后方向Y贯通主体部40的方式安装有从前后方向Y观察呈环状的轴承42。基部41是在左右方向X上薄的板状。前侧Y1的支承部31配置成基部41从主体部40的下端向前侧Y1延伸，并从左侧X1观察与纵壁37的前端部重叠。后侧Y2的支承部31配置成基部41从主体部40的下端向后侧Y2延伸，并从左侧X1观察与纵壁37的后端部重叠。通过将螺钉43组装于基部41以及纵壁37，各个支承部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的后端部插入后侧Y2的支承部31的环状的轴承42。在该状态下，螺纹轴32由前后一对支承部31以能自转的方式两端支承。
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安装有在前后方向Y上薄的板状的托架45。输出轴44从托架45向后侧Y2露出。输出轴44从前侧Y1与螺纹轴32的前端部的比前侧Y1的支承部31的主体部40更往前侧Y1伸出的部分对置。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，朝向后侧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以能一体旋转的方式连结。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牙50A(参照后述的图4)的环状的螺母，以该螺牙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。在第一部51A的上端缘，一体地设有朝向上侧Z1突出的止转突起51D，止转突起51D被纳入基座部30的上侧Z1的横壁38的限制部38C(参照图4)。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，从基座部30的收容空间30A向左侧X1伸出配置，从左侧X1与主体部50对置(也参照图4)。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51E。
第二部51B从右侧X2与转动部6的延设部6D对置，在贯通孔51E，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51E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又被称为限位部，形成为从固定部52A的前端部向右侧X2延伸的杆状。
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式非接触传感器。当使用光传感器时，在传感器36的左侧面，形成有向右侧X2凹陷并且沿着前后方向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。螺钉56的前端部56A配置成从纵壁37向右侧X2伸出(参照图4)。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。虽然在前端部52B嵌入槽36A的状态下，该槽36A的检测光被前端部52B遮住，但前端部52B在穿过槽36A时不与传感器36接触。
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统一通过以非接触的方式检测螺母构件35的被检测部52，从而检测转动角度θ是5度、15度、30度、45度、60度中的哪一个。
图3是驱动机构8的左视图，图4是图3的A-A剖视图。参照图4，各个传感器36包括槽底36B和一对槽侧面36C，其中，槽底36B从右侧X2划分出槽36A，一对槽侧面36C从槽底36B朝向左侧X1平行延伸。槽底36B架设于一对槽侧面36C的右端缘间，通过槽底36B和一对槽侧面36C构成从前后方向Y观察时的槽36A的轮廓。处于从左侧X1嵌入槽36A的状态的被检测部52的前端部52B以与槽底36B以及槽侧面36C两者都远离的方式配置。在此，将槽底36B以及槽侧面36C各自与前端部52B之间的间隙称为间隙60。
止转突起51D以在限制部38C的短边方向即左右方向X上稍有游隙的方式，从下侧Z2插入基座部30的上侧Z1的横壁38的限制部38C。因此，在该横壁38的从左侧X1对限制部38C进行锁边的左侧周缘部38D与止转突起51D之间 设有间隙61，在该横壁38的从右侧X2对限制部38C进行锁边的右侧周缘部38E与止转突起51D之间设有间隙62，间隙61以及间隙62比间隙60小。也就是说，在止转突起51D被纳入限制部38C的状态下，限制部38C的短边方向上的止转突起51D的游隙比传感器36的槽36A内的被检测部52的游隙小。具体而言，间隙61以及间隙62各自的左右方向X上的尺寸比槽底36B与前端部52B的间隙60的左右方向X上的尺寸小，比各个槽侧面36C与前端部52B的间隙60的上下方向Z上的尺寸小。
在组装驱动机构8时，有时螺母构件35会相对于螺纹轴32呈自由状态，在该情况下，可以想象，在被检测部52嵌入传感器36的槽36A的状态下，螺母构件35会绕着螺纹轴32随意旋转。此外，可以想象，在洗衣机1洗涤运转过程中，特别是在脱水过程中，螺母构件35会因振动而绕着螺纹轴32旋转。当螺母构件35旋转时，随着螺母构件35的旋转而在上下方向Z上晃荡的被检测部52的前端部52B有可能会与传感器36的槽底36B、槽侧面36C碰撞，导致位于被检测部52的周围的传感器36损坏。
因此，如上所述，设于螺母构件35的止转突起51D被纳入形成于基座部30并沿着前后方向Y呈直线状延伸的限制部38C，限制部38C的短边方向上的止转突起51D的游隙设定为比传感器36的槽36A内的被检测部52的游隙小。该情况下，在被检测部52与传感器36碰撞之前，止转突起51D先与基座部30的限制部38C的周缘部即上述的左侧周缘部38D、右侧周缘部38E接触，因此限制部38C的短边方向上的止转突起51D的移动受到限制。由此，螺母构件35无法绕着螺纹轴32旋转，因此，能防止被检测部52与传感器36碰撞。其结果是，能防止因被检测部52而导致传感器36损坏的情况发生。
图5是驱动机构8的俯视图。参照图5，基座部30的上侧Z1的横壁38的对前后方向Y上的限制部38C的端部进行锁边的部分包括：对限制部38C的前端进行锁边的前侧周缘部38F、和对限制部38C的后端进行锁边的后侧周缘部38G。前侧周缘部38F被配置于在前进的螺母构件35与前侧Y1的支承部31(参照图2)接触之前先从前侧Y1与止转突起51D接触的位置。后侧周缘部38G被配置于在后退的螺母构件35与后侧Y2的支承部31(参照图2)接触之前先从后侧Y2与止转突起51D接触的位置。因此，前侧周缘部38F位于至少比前 侧Y1的支承部31的主体部40(参照图2)更靠近后侧Y2的位置，后侧周缘部38G位于至少比后侧Y2的支承部31的主体部40(参照图2)更靠近前侧Y1的位置。
该情况下，在螺母构件35与支承部31接触之前，前侧周缘部38F以及后侧周缘部38G作为止动部先与止转突起51D接触，因此，能防止因螺母构件35与支承部31碰撞而导致支承部31变形或设于支承部31的轴承42(参照图2)损坏。
图6是变形例的驱动机构8的左视图。图7是图6的B-B剖视图。在图6以及图7中，对于与图1-图5中已说明的部分相同的部分赋予相同的标记，并省略对于该部分的说明。传感器36虽然在上述的实施方式中安装于纵壁37，但也可以像图6以及图7所示出的变形例那样，安装于上下一对横壁38中的某一个。在图6以及图7中，作为一例，以使槽36A朝向上侧Z1的姿势，从上侧Z1将传感器36安装于下侧Z2的横壁38。该情况下，如图7所示，用于将传感器36安装于横壁38的螺钉56的前端部56A从上侧Z1贯通传感器36以及下侧Z2的横壁38，并从该横壁38朝向下侧Z2露出。由此，螺钉56的前端部56A不会从纵壁37往左右方向X伸出，因此，能防止螺钉56的前端部56A与洗涤桶3接触，能实现左右方向X上的省空间化。需要说明的是，在以使槽36A朝向下侧Z2的姿势，从下侧Z2将传感器36安装于上侧Z1的横壁38的情况下，用于将该传感器36安装于上侧Z1的横壁38的螺钉56的前端部56A从上侧Z1的横壁38朝向上侧Z1露出。
本发明并不限定于以上所说明的实施方式，可以在权利要求记载的范围内进行各种变更。
例如，传感器36不限于上述的非接触传感器，也可以是接触传感器。在传感器36是接触传感器的情况下，如上所述，螺母构件35绕螺纹轴32的旋转受到限制，因此，能防止螺母构件35的被检测部52与传感器36猛烈接触到使传感器36破损的程度。
此外，基座部30的纳入螺母构件35的止转突起51D的限制部38C也可以不形成于上述的上侧Z1的横壁38，而形成于下侧Z2的横壁38，还可以形成于纵壁37。
此外，也可以不在螺母构件35的连结部51的第三部51C安装被检测部52，而是由第三部51C本身发挥被检测部52的功能。
此外，也可以代替上述的螺钉，使用铆钉等紧固件。
此外，只要能在电机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，也可以省略锁定解除机构7、转动部6的凹部6C。由此，能对转动角度θ进行无级调整。

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，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；
    支承部，以能旋转的方式支承所述螺纹轴；
    基座部，固定有所述支承部；
    被检测部，设于所述螺母构件，用于检测所述转动部的转动角度；
    止转突起，设于所述螺母构件；
    传感器，检测所述被检测部；以及
    限制部，形成于所述基座部，沿着所述轴向呈直线状延，纳入所述止转突起。
  2. 根据权利要求1所述的洗衣机，其中，
    所述限制部形成为槽状，
    所述基座部的将所述轴向上的所述限制部的端部锁边的部分配置于在所述螺母构件与所述支承部接触之前先从所述轴向与所述止转突起接触的位置。
  3. 根据权利要求1或2所述的洗衣机，其中，
    所述基座部包括纵壁和从所述纵壁横向延伸并安装有所述传感器的横壁，并沿横向排列配置于所述洗涤桶。
  4. 根据权利要求1～3中任一项所述的洗衣机，其中，
    所述传感器是以非接触的方式检测所述被检测部的非接触传感器。
PCT/CN2016/096688 2015-08-25 2016-08-25 洗衣机 WO2017032325A1 (zh)

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