WO2017071610A1 - 一种内桶的锁止机构及洗衣机 - Google Patents

一种内桶的锁止机构及洗衣机 Download PDF

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Publication number
WO2017071610A1
WO2017071610A1 PCT/CN2016/103553 CN2016103553W WO2017071610A1 WO 2017071610 A1 WO2017071610 A1 WO 2017071610A1 CN 2016103553 W CN2016103553 W CN 2016103553W WO 2017071610 A1 WO2017071610 A1 WO 2017071610A1
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WO
WIPO (PCT)
Prior art keywords
locking
bearing
spring
lock
inner tub
Prior art date
Application number
PCT/CN2016/103553
Other languages
English (en)
French (fr)
Inventor
吕佩师
杨林
徐杰
方大丰
王玲臣
Original Assignee
青岛海尔洗衣机有限公司
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 filed Critical 青岛海尔洗衣机有限公司
Priority to JP2018521914A priority Critical patent/JP6718580B2/ja
Priority to EP16859045.3A priority patent/EP3369853B1/en
Priority to KR1020187014192A priority patent/KR102091703B1/ko
Priority to US15/771,474 priority patent/US20180347094A1/en
Publication of WO2017071610A1 publication Critical patent/WO2017071610A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • 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 
    • D06F37/302—Automatic drum positioning
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups

Definitions

  • the invention relates to the field of washing machines, in particular to a locking mechanism of an inner tub and a washing machine.
  • the existing pulsator type washing machine has a water-permeable hole on the inner barrel, and the inner and outer barrels communicate with each other.
  • the inner barrel is a washing tub
  • the outer tub is a water tub
  • the water filled between the inner tub and the outer side wall of the outer tub does not participate in washing.
  • the water involved in the washing is only the part of the inner tub, which makes the water waste a lot.
  • too much water between the inner and outer barrels also reduces the concentration of the detergent/washing powder in the washing liquid.
  • the area between the inner and outer side walls of the outer tub becomes a space for dirt and dirt, and the scale and washing powder in the tap water are free.
  • the cellulose of the objects, clothing, the organic matter of the human body, and the dust and bacteria brought in by the clothes are easily retained between the inner tub and the side wall of the outer tub. These molds are a large amount of dirt accumulated in the washing machine for a long time, and can not be effectively removed and propagated. If the dirt that cannot be seen by these users is not removed, the bacteria will adhere to the clothes after the next washing. Brought to the human body, causing cross-infection problems.
  • the patent of 201020107890.8 relates to a fully automatic washing machine, which mainly comprises a box body, a washing and dewatering barrel, a water tank and a driving device.
  • the water tank is installed outside the washing and dewatering barrel and fixedly connected with the box body, and the bottom surface of the inner wall of the water tank and the outer wall of the washing and dewatering barrel A sealing device is arranged between the bottom surface, and a sealing cavity is formed in the sealing device; the outer side wall of the washing and dewatering bucket has no through hole, and the bottom is provided with a water outlet communicating with the sealing cavity; the water tank is provided with a water outlet communicating with the drain pipe There is a drain valve on the drain pipe.
  • the bucket is fixedly connected to the box by a boom.
  • One end of the boom is connected to the inner wall of the upper end of the tank, and the other end is connected to the outer wall of the tub.
  • the sealing structure wears and wears for a long time, it is easy to cause wear and water leakage. If the water quality is poor, the sediment concentration is high, the service life will be greatly shortened, and the function should not be performed. It is also not suitable for use in a state where the washing capacity is large, and the reliability is poor.
  • the washing machine inner barrel can be locked by the locking mechanism during washing, the bottom drain outlet of the inner tub is closed, the drain opening of the inner tub is controlled to open when draining, the locking mechanism is unlocked when dehydrating, the inner tub is rotated and dehydrated, and the lock is locked during the locking mechanism control process.
  • the stop rod needs to be extended and retracted.
  • the expansion and contraction of the lock rod is caused by the motor driving the crank rod to drive the lock rod up and down. When the crank rotates to 90° or 270°, the friction between the lock rod and the slide is the largest. The motor appears to be unable to move and get stuck due to the large friction.
  • the present invention has been made in view of this.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a locking mechanism for the inner tub, and the reciprocating motion of the locking lever is smooth.
  • a locking mechanism for an inner tub comprising a lock bar that can reciprocate axially, a slide for the movement of the lock lever, and a drive unit that drives the movement of the lock lever
  • the driving unit includes a connecting rod, a crank and a rotating electric machine, and a bearing is disposed between the locking rod and the slide.
  • the locking mechanism further includes a fixing seat, the center of the fixing seat is provided with a slide rail, and the bearing is disposed in the sliding passage, and preferably the outer ring of the bearing is in an interference fit with the sliding rail.
  • the bearing is an oil-impregnated bearing, the oil-impregnated bearing is disposed in the slide, the outer ring of the oil-impregnated bearing is fixed with the slide, and the locking rod is disposed on the inner ring of the oil-impregnated bearing.
  • the bearing is a linear bearing
  • the linear bearing is disposed in the slide rail
  • the outer ring of the linear bearing is fixed with the slide rail
  • the lock lever is disposed on the inner ring of the linear bearing
  • the linear bearing is preferably a rolling bearing.
  • An idle stroke is provided between the connecting rod and the crank and/or between the connecting rod and the locking lever.
  • the idle travel is a movable space disposed along the length of the link, and the connecting end of the crank and/or the lock lever moves in the movable space, and the locked state does not change.
  • the connecting rod is a connecting arm, and two ends of the connecting arm are respectively provided with a hinge hole, a hinge hole of one end of the connecting arm is hinged with an end of the locking rod, and the other end of the connecting arm is hinged A hole is hinged to the crank, and one or both of the hinge holes are oval holes.
  • the connecting rod includes a connecting arm, a first spring and a slider, one end of the first spring is fixed to the connecting arm, the other end of the first spring is fixed to the slider, and the slider is slidably connected with the connecting arm, the connection One end of the arm fixing first spring is hinged with the lock lever, and the connecting arm is provided with one end of the slider hinged to the crank through the slider,
  • a groove/notch is disposed in the middle of the connecting arm, and the first spring and the sliding block are arranged in series along the length direction in the groove/notch, and the sliding block is slidably connected with the groove/notch.
  • One end of the first spring is fixed to the end of the groove/notch, and the other end is fixed to the slider.
  • the end of the groove/notch and the sliding block are respectively provided with mounting posts on the end surface of the end, and the two ends of the first spring are respectively sleeved on the mounting post.
  • the two end faces of the mounting columns facing each other are inclined faces or stepped end faces.
  • the upper part of the locking rod is provided with a boss, and the lower part of the boss is provided with a second spring.
  • One end of the second spring is in contact with the lower surface of the boss, and the other end is fixed.
  • the second The spring is compressed, preferably the other end of the second spring is fixed to the mount.
  • a washing machine having the above locking mechanism having the above locking mechanism.
  • a bearing is provided between the lock lever and the slide rail to reduce the friction between the lock lever and the slide rail, thereby preventing the lock lever from being caught by the slide rail from being unsmooth.
  • the crank is rotated to 90° or 270°, that is, when the friction between the lock lever and the slide is maximum, the lock lever moves smoothly.
  • the locking mechanism of the present invention sets an idle stroke.
  • the locking mechanism receives the error signal
  • the locking lever extends, but does not protrude into the locking hole, and the locking rod is dead at the bottom of the inner barrel, and the rotating motor drives the crank. Or the connecting rod moves in the idle stroke.
  • the motor continues to drive the lock lever to move downward to reset, and re-enter the next working cycle without causing damage to the motor or the bottom of the inner tub, and no manual Adjust or disassemble the washing machine for maintenance to avoid malfunction of the washing machine and avoid unnecessary trouble for the user.
  • FIG. 1 Structure diagram of the washing machine of the present invention
  • Figure 2 Stereo view of the locking mechanism of the present invention
  • Figure 3 Cutaway view of the locking mechanism of the present invention
  • FIG. 4 Schematic diagram of the position of the lock lever of the present invention
  • FIG. 5 Schematic diagram of another position of the lock lever of the present invention
  • FIG. 6 Schematic diagram of another position of the lock lever of the present invention
  • FIG. 7 Schematic diagram of another position of the lock lever of the present invention
  • Figure 8 is a structural view of a driving unit of a lock lever in still another embodiment of the present invention.
  • Figure 10 Cross-sectional view of the bearing of the present invention
  • the washing machine of the present invention includes an inner tub 100 and an outer tub 200.
  • the inner tub 101 has no water leakage hole communicating with the outer tub
  • the inner tub bottom 102 is provided with a drain port 105
  • the inner tub body 101 is provided with a drain hole at the upper portion. 106.
  • the drain port 105 is closed, the water level is lower than the height of the drain hole 106, only water is in the inner tub 100, and there is no water between the inner tub 100 and the outer tub 200.
  • the drain port 105 is opened, most of which are opened. The water is drained from the drain port 105.
  • the inner tub 100 When dehydrating, the inner tub 100 rotates, and the water discharged from the laundry rises along the wall of the tub by the centrifugal force, and is discharged through the drain hole 106 in the upper portion of the inner tub to the inner and outer tubs, and then passes through the outer tub 200.
  • the outer tub drain is discharged, so that the washing water is only stored in the inner tub 100 during washing, and there is no washing water between the inner and outer tubs, thereby saving water, and the area between the inner tub and the side wall of the outer tub does not accumulate dirt, so that The outer tubs are cleaned to avoid bacterial growth; during the draining and/or dehydration process, the drains 105 are opened, and most of the water and sediment, particles and the like are discharged from the lower drain 105 into the outer tub, and the water in the clothes is In the barrel high speed Dehydrating rpm discharged from the drain hole 106 to the upper portion of the outer tub in the tub, the drain from the bottom of the outer tub 202, drain directly discharged outside the washing machine, and to achieve a rapid drainage drainage, sewage good effect.
  • the present invention is provided with a drainage control mechanism 400 for controlling the opening/closing of the drain port 105 at the bottom of the drain port 105.
  • the drain control mechanism 400 is fixed at the bottom of the outer tub 200.
  • the drain control mechanism 400 seals the drain port 105 when the water enters or washes, and controls the drain port 105.
  • the drain control mechanism 400 controls the drain port 105 to open.
  • a locking mechanism 300 is disposed at the bottom of the inner tub 100.
  • the locking mechanism 300 is fixed on the outer tub 200.
  • the locking mechanism 300 can first position the inner tub to the position of the drain port 105 corresponding to the drain control mechanism 400, and lock the inner tub 100.
  • the drain control mechanism 400 blocks the drain port 105.
  • the lock mechanism 300 can also effectively prevent the inner tub 100 from rotating during water ingress and washing, and the drain control mechanism 200 that controls the drain port 105 at the bottom of the inner tub to open/close.
  • the bottom of the inner tub is provided with a locking hole 301.
  • the inner bucket flange 103 is provided with a locking hole 301.
  • the locking hole 301 is a blind hole and is not communicated with the inner barrel.
  • the bottom of the outer tub is provided with a locking mechanism, and the locking mechanism includes a An axially reciprocating locking lever 302, a sliding passage 304 for moving the locking lever, and a driving unit for driving the locking lever, the driving unit including a connecting rod, a crank and a rotating electric machine, the locking lever 302 and the Bearings 340 are disposed between the runners 304.
  • the locking rod 302 moves upward and extends into the locking hole 301, and the inner tub 100 is locked and cannot be rotated.
  • the drainage control mechanism 400 seals the drainage port 105, and there is no water between the inner and outer barrels, and the inner barrel 100
  • the lock can prevent the drain control mechanism 400 from failing.
  • the lock lever 302 moves downward and comes out of the lock hole 301, and the inner tub rotates circumferentially to dehydrate the inner laundry.
  • the reciprocating motion of the lock lever is that the rotary motor drives the crank link to drive the lock lever to move
  • the friction between the lock lever and the slide is the largest, and the motor may not move or jam due to the large friction force, and the lock lever and the slide are in the present invention.
  • the arrangement of the bearings between the tracks reduces the friction between the lock lever and the slide to prevent the lock lever from being caught by the slide.
  • the locking mechanism further includes a fixing base 303 of a locking rod 302.
  • the center of the fixing base 303 is provided with a slideway 304.
  • the locking rod 302 passes through the sliding passage 304, preferably the fixing base 303.
  • the center of the fixing base 303 is bent upward or downward to form the slide path 304.
  • the bearing 340 is disposed in the slideway 304.
  • the outer ring of the bearing 340 has an interference fit with the slideway 304, and the interference fit is convenient to install.
  • the stepped hole is arranged in the slideway 304, and the diameter of the stepped hole is abrupt. The position is the positioning structure of the bearing 340.
  • the bearing 340 is an oil-impregnated bearing, and the oil-impregnated bearing is disposed in the slide rail, and an outer ring of the oil-impregnated bearing is fixed to the slide rail, and the lock lever is disposed on the inner ring of the oil-impregnated bearing.
  • the bearing 340 is a linear bearing
  • the linear bearing is disposed in the slide rail
  • the outer ring of the linear bearing is fixed with the slide rail
  • the lock lever is disposed on the inner ring of the linear bearing
  • the linear bearing is a rolling bearing
  • the inner wall of the linear bearing has balls, so that the locking rod rubs against the ball on the inner wall of the bearing, the friction force is greatly reduced, and the smooth movement of the locking rod in the linear bearing is ensured to ensure the normal rotation of the motor.
  • the upper part of the locking rod is provided with a boss 320.
  • the lower part of the boss 320 is provided with a second spring 321 .
  • One end of the second spring 321 is in contact with the lower surface of the boss, and the other end is fixed, and the locking rod 302 is downward.
  • the second spring 321 is compressed.
  • the other end of the second spring 321 is in contact with the fixing seat 303, and the restoring force of the second spring 321 drives the locking lever 302 to move upward.
  • the lower end of the locking rod is connected to the connecting rod of the crank connecting rod structure, and the crank is connected to a rotating electric machine 324.
  • the rotating electric machine 324 is disposed in a casing 328, and the casing is provided with a mounting portion 329.
  • the mounting portion 329 is attached to the lower end of the fixing base, and a center of the mounting portion is provided with a through hole through which the locking lever 302 passes.
  • the downward movement of the locking lever 302 is driven by the crank link structure, and the upward extension of the locking lever 302 is the recovery of the second spring 321 after the crank link structure releases the pulling force. Force driven.
  • the crank is an eccentric wheel 323, the eccentric shaft of the eccentric is hinged with the link, and the center of the eccentric is connected to a motor shaft of the rotating electrical machine.
  • the rotary motor rotates once for one cycle of the lock lever, and can be extended from the retracted state to the lock hole, and then retracted and reset.
  • the locking lever 302 protrudes, but does not protrude into the locking hole 301. At this time, the locking lever 302 is pressed against the other position of the bottom of the inner tub, and the other positions of the bottom of the inner tub are better than the locking hole 301. Low due to the locking lever 302 does not rise to the highest point, the lock lever will die at the bottom of the inner bucket. At this time, the rotary motor 324 still drives the lock lever to move upward, which may cause the motor to block, jam, or even cause the motor to burn.
  • the stop rod cannot be reset, it can't enter the next working cycle, it needs to be adjusted manually, and even the inner barrel needs to be removed to enter the next working cycle.
  • the lower end of the lock lever 302 is coupled to the link of the crank link structure, and an idle stroke is provided between the link and the crank and/or between the link and the lock lever.
  • the idle travel is a movable space disposed along the length of the link, and the connecting end of the crank and/or the lock lever moves in the movable space, and the locked state does not change.
  • the locking lever 302 Since the locking lever 302 does not rise to the highest point, the locking lever 302 will be pressed to the bottom of the inner tub, and the rotating motor is still driving the locking lever 302. At this time, since the locking lever is dead at the bottom of the inner tub, the connecting rod The idle travel between the crank and/or the connecting rod and the locking lever begins to function, and the rotating motor drives the crank or the connecting rod to move within the idle stroke. When the highest point of the motor drive is passed, the motor continues. Drive the lock lever to move down to reset, re-enter the next working cycle, no damage to the motor or the bottom of the inner tub, and do not manually adjust or disassemble the washing machine for maintenance, avoid washing machine failure, and avoid unnecessary trouble to the user.
  • the free travel is a compressible distance along the length of the link.
  • the lock lever 302 cannot be driven, the compressible space is compressed.
  • the motor continues to drive the lock lever to move downward to reset and re-enter the next duty cycle.
  • the air travel may be provided by an elliptical hole 331.
  • the connecting rod is a connecting arm 330.
  • the two ends of the connecting arm 330 are respectively provided with a hinge hole, and the hinge hole of one end of the connecting arm and the locking rod 302 The end is hinged, and the hinge hole at the other end of the connecting arm is hinged to the crank, and one or both of the hinge holes are elliptical holes 331.
  • the elliptical hole can provide a certain displacement, so that the motor rotates through the highest point of the drive, and the motor continues to drive the locking lever to move downward to reset and re-enter the next working cycle.
  • the idle stroke may be provided by a spring.
  • the spring may provide a certain displacement to rotate the motor through the highest point of the drive, and the motor continues to drive the lock lever to move downward to reset. Go to the next work cycle.
  • the connecting rod includes a connecting arm 330, a first spring 332 and a slider 334. One end of the first spring 332 is fixed to the connecting arm 330, and the other end of the first spring 332 is fixed to the slider 334.
  • the connecting arm 330 is slidably coupled, and one end of the connecting arm 330 fixed to the first spring 332 is hinged with the locking lever 302, and the connecting arm 330 is provided with one end of the slider hinged to the crank through the slider 334.
  • a groove/notch 339 is disposed in the middle of the connecting arm, and the first spring 332 and the slider 334 are disposed in series along the length direction in the groove/notch 339, and the slider 334 and the groove/notch 339 is slidably connected, one end of the first spring is fixed to the end of the groove/notch 339, and the other end is fixed to the slider 334.
  • the end of the groove/notch 339 and the end of the end of the slider are respectively provided with mounting posts 335, and the two ends of the first spring are respectively sleeved on the mounting post 335.
  • the two opposite end faces of the mounting post 335 are beveled or stepped end faces.
  • the compression amount it is ensured that the assembly length of the first spring and the mounting post is the longest, the spring is reliably installed, and it is not easy to eject when compressed, saving space and occupying in the height direction compared with the plane end surface. The smallest space.
  • the locking mechanism further includes a position switch 336.
  • the locking rod 302 is provided with a triggering structure of the position switch. When the locking rod 302 protrudes into the locking hole 301 and is locked in position, the trigger structure triggers the position switch, the position switch The 336 issues a lock in-position signal. When the lock lever retracts out of the lock hole and retracts and resets, the trigger structure triggers the position switch to issue an unlocked in-position signal, so that the main control panel of the washing machine controls the washing machine to proceed to the next step.
  • the position switch 336 is fixedly disposed on a slide rail outside the lock lever 302, and is fixedly disposed.
  • the trigger structure is disposed on the lock lever 302 and moves together with the lock lever 302.
  • the lock lever 302 is moved. Extending into and/or out of the locking hole 301, the triggering structure on the locking lever triggers the position switch to issue a locking rod into and/or out of the signal, and the position of the locking lever is applied to accurately determine whether the locking lever is locked in place Or unlock it in place, the judgment is accurate, and the structure is simple.
  • the position switch 336 is a contact switch, the contact of the contact switch faces the lock lever 302, and the side of the lock lever facing the contact includes at least two side faces different in vertical distance from the contact when the lock is locked.
  • the contact contact triggers the contact switch to issue an unlocked in-position signal so that the main control panel of the washing machine controls the washing machine to proceed to the next step.
  • the junction of the two sides is an inclined transition surface. During the retraction of the locking rod, the contact is in contact with the inclined transition surface, and the inclined transition surface is arranged so that the contact between the two end sides and the contact contact is smoothly performed, thereby avoiding the locking of the locking lever.
  • the locking rod 302 is a cylinder, and may be a triangular prism or a polygonal prism, and includes at least a first locking portion 337 and a second locking portion 338.
  • the diameters of the first locking portion 337 and the second locking portion 338 are different.
  • the diameter of the first locking portion 337 is larger than the diameter of the second locking portion 338.
  • the second lock portion 338 contacts the contact, triggering the contact switch to issue an unlocked in-position signal, so that the main control of the washing machine The board controls the washing machine to proceed to the next step.
  • the second locking portion 338 contacts the contact, triggering the contact switch to issue a locking in-position signal
  • the first locking portion 337 contacts the contact, triggering the contact switch to issue an unlocking in-position signal, so that the main control panel of the washing machine controls the washing machine to proceed to the next step.
  • connection between the first locking portion and the second locking portion smoothly transitions.
  • the contact contacts the inclined transition surface, and the inclined transition surface is provided so that the locking portions with different diameters and the contact contact are smoothly switched to avoid jamming the locking lever.
  • the locking rod 302 is a cylinder, which is convenient for the cooperation with the locking hole, and is more likely to extend into the locking hole to lock the inner tub.
  • the upper portion of the locking lever is the first locking portion 337, and the locking is performed.
  • the lower part of the rod is a second locking portion 338.
  • the second locking portion contacts the contact, triggering the contact switch to issue a locking in-position signal when the locking rod is After retracting from the locking hole and retracting and resetting, the first locking portion contacts the contact, and the triggering contact switch emits an unlocking in-position signal.
  • the diameter of the first locking portion is larger than the diameter of the second locking portion, and the diameter changes. Smooth transition through a bevel, the contact is in contact with the inclined transition surface during the retraction of the locking bar,
  • the position switch 336 is an inductive switch
  • the triggering structure is a signal transmitting portion
  • the signal transmitting portion is disposed on the locking lever and moves together with the locking rod 302
  • the sensing switch is fixedly disposed outside the locking rod , is fixed, and the sensing portion of the sensor switch faces the lock lever.
  • the locking rod extends into and/or out of the locking hole, and the signal emitting portion of the locking rod that protrudes into and/or out corresponds to the sensing portion of the sensing switch, triggering the sensing switch to extend the locking rod And / or the escape signal
  • the position of the lock lever is applied to accurately determine whether the lock lever is locked or unlocked in place, the judgment is accurate, and the structure is simple.
  • the signal transmitting portion may be a magnetic signal or a photoelectric signal or a microwave signal transmitting portion.
  • the locking lever 302 is respectively provided with a locking signal transmitting portion and an unlocking signal transmitting portion.
  • the locking signal transmitting portion faces the sensing portion of the sensing switch.
  • the sensing switch receives the locking signal from the locking signal transmitting portion and transmits a locking signal to the main control board; when the locking lever comes out of the locking hole and retracts and resets, the unlocking signal transmitting portion is opposite to the sensing portion of the sensing switch.
  • the inductive switch receives the unlocking signal from the unlocking signal transmitting unit and transmits an unlocking signal to the main control board.
  • the slide bar is externally provided with a slideway 304 for guiding the lock bar 302 to move in the direction of the slide track 304 to extend into the lock hole 301.
  • the position switch 336 is disposed in the side wall of the slide or is disposed in the The end of the slide. If disposed in the side wall of the chute, the inner wall of the chute is provided with a gap for mounting the position switch, and the position switch 336 is installed in the gap.
  • the position switch 336 is disposed in a side wall of the slide of the fixing base 303 or at an end of the slide.
  • the position switch 336 is disposed at a mounting portion 329 of the housing 328 of the rotary electric machine 324.
  • a through hole for the locking rod 302 to pass through, a side wall of the through hole is provided with a gap for mounting the position switch 336, and is disposed at the place close to the rotating motor for wiring, and can be connected with the wiring of the rotating motor .
  • the locking mechanism further includes a fixing shell 305 mounted on an upper portion of the fixing base 303, and
  • the fixing base 303 is fixedly connected and can be a threaded connection.
  • the locking rod 302 and the sliding channel 304 are disposed in the fixing shell 305, and a sealing structure is disposed between the fixing shell 305 and the locking rod 302.
  • the sealing structure is a telescopic structure, preferably a corrugated shaped sealing sleeve 307. One end of the sealing sleeve is sealingly connected with the locking rod, and the other end is sealingly connected with the fixing shell.
  • a sealing structure is disposed between the locking mechanism and the outer tub.
  • the outer tub is provided with a first mounting hole 201 of a locking mechanism, and the fixing seat of the locking mechanism is mounted at the bottom of the outer tub, and is fixed.
  • the seat 303 is fixed to the outer side of the bottom of the outer tub 200 by a screw connection such as a bolt or a screw.
  • the fixed shell of the lock mechanism is installed in the mounting hole, and a sealing structure is arranged between the fixed shell and the mounting hole to ensure that the seal cannot be leaked at the place.
  • the sealing structure is an elastic sealing ring.
  • the upper end of the first mounting hole 201 is bent inwardly to form a bend, and the lower end of the fixed shell is bent outward to form a bend, and the fixed shell 305 extends into the first mounting hole 201, and the upper end of the fixed shell 305 is abutted.
  • the bending of the upper end of the first mounting hole 201 is performed, and the end of the sealing sleeve provided between the fixed housing and the locking lever is pressed between the upper end of the fixed housing 305 and the upper end of the first mounting hole 201 Forming a seal, the lower end of the first mounting hole 201 abuts against the lower end of the fixed case, and a sealing structure such as an elastic sealing ring is disposed therebetween.
  • the sealing structure between the fixing shell 305 and the locking rod 302 is a sealing sleeve 307 which can be expanded and contracted with the locking rod.
  • the first end 308 of the sealing sleeve 307 is sealingly connected with the fixing shell 305, preferably The first end of the sealing sleeve 307 is disposed between the upper end of the fixing shell 305 and the upper end of the first mounting hole 201.
  • the sealing sleeve has elasticity to form a seal
  • the second end 309 is sealingly connected with the locking rod 302, preferably through The nut is squeezed onto the boss of the locking bar 302 to form a seal so that water in the outer tub does not enter the fixed casing, the locking mechanism 300 is not damaged, and water leakage is not caused.
  • the sealing structure is a bellows-shaped sealing sleeve 307, which has a certain degree of flexibility, is not permeable to water, and can also achieve sealing.
  • the sealing sleeve is a sealing sleeve made of an elastic material, such as a rubber sleeve.
  • a third end 310 extends axially from the second end 309 of the sealing sleeve 307.
  • the third end 310 is sealingly connected to the lower end of the fixed housing 305.
  • the extended portion is expandable and contractible with the locking rod.
  • the sealing sleeve is preferably in the shape of a bellows.
  • the extended sealing sleeve increases the role of the secondary sealing. Even if there is a problem with the sealing above, the extended sealing sleeve can further seal the safety, improve safety and avoid water leakage.
  • the lower end of the fixed casing 305 forms a seal with the fixed seat pressing the third end 310.

Abstract

一种内桶的锁止机构及洗衣机，所述锁止机构（300）包括一可沿轴向往复运动的锁止杆（302）、供锁止杆（302）运动的滑道（304）和驱动锁止杆（302）运动的驱动单元，所述驱动单元包括连杆、曲柄和旋转电机（324），其特征在于：所述锁止杆（302）和所述滑道（304）之间设置轴承（340）。在锁止杆（302）和滑道（304）之间设置轴承（340）减小锁止杆（302）和滑道（304）之间的摩擦力，避免锁止杆（302）被滑道（304）卡住导致的不顺畅。保证曲柄转动到90°或者270°，锁止杆（302）与滑道（304）的摩擦力最大时，锁止杆（302）运动顺畅。

Description

一种内桶的锁止机构及洗衣机 技术领域
本发明涉及洗衣机领域，尤其是一种内桶的锁止机构及洗衣机。
背景技术
现有的波轮式洗衣机，内桶上由透水孔，内外桶之间连通，内桶为洗涤桶，外桶为盛水桶，而内桶与外桶侧壁之间充满的这部分水不参与洗涤，真正参与洗涤的水仅是内桶中的那部分，这使得水资源浪费较大，另外，内外桶之间过多的水也会降低洗涤液中洗涤剂/洗衣粉的浓度。与此同时，由于水流在内桶、外桶之间频繁进出，持续使用之后，内桶与外桶的侧壁之间的区域也成了藏污纳垢的空间，自来水里的水垢、洗衣粉的游离物、衣物的纤维素、人体的有机物及衣物带入的灰尘与细菌极易滞留在内桶与外桶的侧壁之间。这些霉菌是用久了的洗衣机内部积蓄的大量污垢、因不能有效去除而滋生繁殖的，这些使用者看不到的污垢如果不予清除，那么在下一次洗涤后，细菌又会附着在衣物上而带给人体，造成交叉感染的问题。
200420107890.8专利涉及一种全自动洗衣机，主要包括箱体、洗涤脱水桶、盛水桶和驱动装置，盛水桶安装在洗涤脱水桶的外面并与箱体固定连接，盛水桶内壁底面与洗涤脱水桶的外壁底面之间设有密封装置，并在密封装置内形成密封腔；洗涤脱水桶外侧壁无通孔，底部设有与密封腔相连通的排水口；盛水桶上开有与排水管相通的排水口，排水管上设有排水阀。盛水桶通过吊杆与箱体固定连接。吊杆的一端与箱体上端的内壁相连接，另一端与盛水桶的外壁相连接。但是长时间运转，因为密封结构长时间运转磨损，容易造成磨损漏水，如果水质较差，含沙量较高，使用寿命会大大缩短，就不能起到应有的功能了。也不适应洗涤容量大的状态下使用，可靠性较差。
可以在洗涤时通过锁止机构将洗衣机内桶锁定，控制内桶底部排水口封闭，排水时控制内桶底部排水口打开，脱水时锁止机构解除锁定，内桶转动脱水，在锁止机构控制过程中，锁止杆需要伸出和缩回，锁止杆的伸缩是电机带动曲柄连杆驱动锁止杆上下运动，当曲柄转动到90°或者270°时，锁止杆与滑道的摩擦力最大，会出现电机因摩擦力大而转不动、卡住现象。
鉴于此提出本发明。
发明内容
本发明的目的为克服现有技术的不足，提供一种内桶的锁止机构，锁止杆的往复运动顺畅。
本发明的又一目的为提供一种具有上述锁止机构的洗衣机。
为了实现该目的，本发明采用如下技术方案：一种内桶的锁止机构，包括一可沿轴向往复运动的锁止杆、供锁止杆运动的滑道和驱动锁止杆运动的驱动单元，所述驱动单元包括连杆、曲柄和旋转电机，所述锁止杆和所述滑道之间设置轴承。
所述锁止机构还包括固定座，所述固定座的中心设有滑道，所述轴承设置在所述滑道内，优选所述轴承的外圈与所述滑道过盈配合。
所述轴承为含油轴承，所述含油轴承设置在所述滑道内，含油轴承的外圈与滑道固定，所述锁止杆设置在含油轴承的内圈。
所述轴承为直线轴承，所述直线轴承设置在所述滑道内，直线轴承的外圈与滑道固定，所述锁止杆设置在直线轴承的内圈，优选所述直线轴承为滚动轴承。
所述连杆和曲柄之间和/或所述连杆和锁止杆之间设置空行程。
所述空行程为一段沿连杆长度方向设置的活动空间，曲柄和/或锁止杆的连接端在该活动空间运动，锁止状态不变。
所述连杆为一连接臂，所述连接臂的两端分别设置铰接孔，所述连接臂的一端的铰接孔与所述锁止杆的端部铰接，所述连接臂的另一端的铰接孔与所述曲柄铰接，所述铰接孔中的一个或两个为椭圆孔。
所述连杆包括连接臂、第一弹簧和滑块，所述第一弹簧的一端与连接臂固定，第一弹簧另一端与滑块固定，所述滑块与连接臂滑动连接，所述连接臂固定第一弹簧的一端与锁止杆铰接，所述连接臂设置滑块的一端通过滑块与所述曲柄铰接，
优选所述连接臂中间设有一凹槽/豁口，所述第一弹簧和所述滑块串联后沿长度方向设置在该凹槽/豁口内，所述滑块与凹槽/豁口滑动连接，所述第一弹簧一端与凹槽/豁口的端部固定，另一端与滑块固定，
优选所述凹槽/豁口的端部和所述滑块正对该端部端面上分别设有安装柱，所述第一弹簧的两端分别套设在安装柱上，
优选所述安装柱相互正对的两个端面为斜面或阶梯端面。
所述锁止杆的上部设有一凸台，所述凸台的下部设有第二弹簧，第二弹簧一端与凸台的下表面接触，另一端固定，锁止杆向下运动时，第二弹簧被压缩，优选所述第二弹簧的另一端与固定座固定。
一种具有上述锁止机构的洗衣机。
采用本发明所述的技术方案后，带来以下有益效果：
1、本发明中在锁止杆和滑道之间设置轴承减小锁止杆和滑道之间的摩擦力，避免锁止杆被滑道卡住导致的不顺畅。保证曲柄转动到90°或者270°，即锁止杆与滑道的摩擦力最大时，锁止杆运动顺畅。
2、本发明所述锁止机构设置空行程，当锁止机构接收到错误信号锁止杆伸出，但是未伸入到锁止孔内，锁止杆顶死在内桶底部，旋转电机驱动曲柄或连杆在空行程内移动，当过了电机驱动的最高点时，电机继续驱动锁止杆向下运动复位，重新进入下一工作循环，不会对电机或内桶底部造成损坏，也不要手动调整或拆开洗衣机进行维修，避免洗衣机故障，避免给用户造成不必要的麻烦。
下面结合附图对本发明的具体实施方式作进一步详细的描述。
附图说明
图1：本发明洗衣机结构图
图2：本发明锁止机构立体图
图3：本发明锁止机构剖视图
图4：本发明锁止杆位置示意图
图5：本发明锁止杆又一位置示意图
图6：本发明锁止杆又一位置示意图
图7：本发明锁止杆又一位置示意图
图8：本发明又一实施例中锁止杆的驱动单元的结构图
图9：本发明轴承结构图
图10：本发明轴承剖视图
其中：100、内桶，101、内桶体，102、内桶底，103、内桶法兰，104、平衡环，105、排水口，106、排水孔，200、外桶，201、第一安装孔，202、外桶底，204、第二安装孔，300、锁止机构，301锁止孔，302、锁止杆，303、固定座，304、滑道，305、固定壳，306、密封圈，307、密封套，308、第一端，309、第二端，310、第三端，320、 凸台，321、第二弹簧，323、偏心轮，324、旋转电机，328、壳体，329、安装部，330、连接臂，331、椭圆孔，332、第一弹簧，334、滑块，335、安装柱，336、位置开关，337、第一锁止部，338、第二锁止部，339、凹槽，340、轴承
具体实施方式
如图1所示，本发明中的洗衣机，包括内桶100、外桶200，内桶体101无与外桶连通的漏水孔，内桶底102设有一排水口105，内桶体101上部设有一圈排水孔106，洗涤时，排水口105关闭，水位低于所述排水孔106的高度，只有内桶100中有水，内桶100和外桶200之间无水，洗涤结束后，排水口105开启，大部分水从排水口105中排走，脱水时，内桶100转动，衣物中脱出的水受离心力的作用沿桶壁上升，通过内桶上部的排水孔106排出内桶到内外桶之间，再通过外桶200的外桶排水口排出，这样洗涤时洗涤水只保存在内桶100中，内外桶之间无洗涤水，节约用水，同时内桶与外桶的侧壁之间的区域不会积蓄污垢，使内、外桶之间清洁，避免滋生细菌；排水和/或脱水过程中，排水口105打开，大部分水及泥沙、颗粒等沉积物从下部排水口105排出至外桶中，衣物中的水则在内桶高速旋转脱水时由内桶上部的排水孔106排出至外桶中，直接从外桶底202的排水口、排水管排出洗衣机外，实现了快速排水且排水、排污效果好。
本发明在排水口105底部设置控制排水口105打开/关闭的排水控制机构400，排水控制机构400固定在外桶200底部，进水、洗涤时排水控制机构400封堵排水口105，控制排水口105关闭，排水、脱水时排水控制机构400控制排水口105开启。在内桶100底部设置锁止机构300，所述锁止机构300固定在外桶200上，所述锁止机构300可先将内桶定位至排水口105与排水控制机构400位置对应后，将内桶100锁止，排水控制机构400将排水口105封堵。锁止机构300还能有效防止洗衣机在进水和洗涤时，内桶100转动，内桶底部的控制排水口105打开/关闭的排水控制机构200失效。
内桶底部设置锁止孔301，优选内桶法兰103上设置锁止孔301，锁止孔301为盲孔与内桶内部不连通，外桶底部设置锁止机构，所述锁止机构包括一可沿轴向往复运动的锁止杆302、供锁止杆运动的滑道304和驱动锁止杆运动的驱动单元，所述驱动单元包括连杆、曲柄和旋转电机，所述锁止杆302和所述滑道304之间设置轴承340。洗涤、漂洗时，所述锁止杆302向上运动并伸入锁止孔301，内桶100被锁定，不能转动，此时排水控制机构400封堵排水口105，内外桶之间无水，内桶100被锁定可避免排水控制机构400失效，脱水时，所述锁止杆302向下运动并脱出锁止孔301，内桶周向旋转，对内部衣物进行脱水。锁止杆的往复运动是旋转电机带动曲柄连杆驱动锁止杆上下运 动，当曲柄转动到90°或者270°时，锁止杆与滑道的摩擦力最大，会出现电机因摩擦力大而转不动、卡住现象，而本发明中在锁止杆和滑道之间设置轴承减小锁止杆和滑道之间的摩擦力，避免锁止杆被滑道卡住导致的不顺畅。
所述锁止机构还包括一锁止杆302的固定座303，所述固定座303的中心设有滑道304，所述锁止杆302穿过所述滑道304，优选所述固定座303为一环状结构，固定座303的中心向上或向下弯折形成所述滑道304。所述轴承340设置在所述滑道304内，优选所述轴承340的外圈与所述滑道304过盈配合，过盈配合安装方便，滑道304内设置阶梯孔，阶梯孔的直径突变处为轴承340的定位结构。
具体的所述轴承340为含油轴承，所述含油轴承设置在所述滑道内，含油轴承的外圈与滑道固定，所述锁止杆设置在含油轴承的内圈。锁止杆与含油轴承摩擦时会有润滑油溢出，这样锁止杆与含油轴承间摩擦力大大减小，保证锁止杆在含油轴承内顺利的运动，保证电机转动正常。
或者所述轴承340为直线轴承，所述直线轴承设置在所述滑道内，直线轴承的外圈与滑道固定，所述锁止杆设置在直线轴承的内圈，优选所述直线轴承为滚动轴承，直线轴承内壁有滚珠，这样锁止杆与轴承内壁的滚珠摩擦，摩擦力大大减小，保证锁止杆在直线轴承内顺利的运动，保证电机转动正常。
所述锁止杆的上部设有一凸台320，所述凸台320的下部设有第二弹簧321，第二弹簧321一端与凸台的下表面接触，另一端固定，锁止杆302向下运动时，第二弹簧321被压缩。优选第二弹簧321的另一端与固定座303接触固定，第二弹簧321的回复力驱动所述锁止杆302向上运动。
所述锁止杆的下端与曲柄连杆结构的连杆连接，所述曲柄连接一旋转电机324，优选所述旋转电机324设置在一壳体328内，所述壳体设有一安装部329，安装部329安装在所述固定座的下端，安装部的中心设有供锁止杆302通过的通孔。
所述锁止杆302向下的复位运动是所述曲柄连杆结构驱动的，所述锁止杆302向上的伸出是所述曲柄连杆结构释放拉力后，所述第二弹簧321的回复力驱动的。
优选所述曲柄为一偏心轮323，所述偏心轮的偏心轴与所述连杆铰接，所述偏心轮的中心连接旋转电机的电机轴。旋转电机转动一周锁止杆工作一个周期，可以由回缩状态向外伸到锁止孔锁止后，再回缩复位。
当锁止机构接收到错误信号锁止杆302伸出，但是未伸入到锁止孔301内，此时锁止杆302顶住内桶底部其他位置，而内桶底部其他位置要比锁止孔301低，由于锁止杆 302未升到最高点，锁止杆会顶死在内桶底部，此时旋转电机324还在驱动锁止杆向上运动，会造成电机堵转、卡死，甚至会造成电机的烧毁，此时锁止杆也无法复位，无法进入下一个工作循环，需要手动调整，甚至需要拆下内桶才能进入下一工作循环。
为解决上述问题，所述锁止杆302的下端与曲柄连杆结构的连杆连接，所述连杆和曲柄之间和/或所述连杆和锁止杆之间设置空行程。所述空行程为一段沿连杆长度方向设置的活动空间，曲柄和/或锁止杆的连接端在该活动空间运动，锁止状态不变。当锁止机构接收到错误信号锁止杆伸出，但是未伸入到锁止孔301内，此时锁止杆302顶住内桶底部其他位置，而内桶底部其他位置要比锁止孔低，由于锁止杆302未升到最高点，锁止杆302会顶死在内桶底部，此时旋转电机还在驱动锁止杆302，此时由于锁止杆顶死在内桶底部，所述连杆和曲柄之间和/或所述连杆和锁止杆之间设置的空行程开始起作用，旋转电机驱动曲柄或连杆在空行程内移动，当过了电机驱动的最高点时，电机继续驱动锁止杆向下运动复位，重新进入下一工作循环，不会对电机或内桶底部造成损坏，也不要手动调整或拆开洗衣机进行维修，避免洗衣机故障，避免给用户造成不必要的麻烦。
所述空行程为沿连杆长度方向有一段可压缩的距离。当锁止杆302不能被驱动时，压缩所述可压缩空间，当过了电机驱动的最高点时，电机继续驱动锁止杆向下运动复位，重新进入下一工作循环。
所述空行程可由椭圆孔331提供，所述连杆为一连接臂330，所述连接臂330的两端分别设置铰接孔，所述连接臂的一端的铰接孔与所述锁止杆302的端部铰接，所述连接臂的另一端的铰接孔与所述曲柄铰接，所述铰接孔中的一个或两个为椭圆孔331。当锁止杆不能被驱动时，所述椭圆孔可提供一定的移动位移，使电机转过驱动的最高点，电机继续驱动锁止杆向下运动复位，重新进入下一工作循环。
或者所述空行程可由弹簧提供，当锁止杆302不能被驱动时，所述弹簧可提供一定的移动位移，使电机转过驱动的最高点，电机继续驱动锁止杆向下运动复位，重新进入下一工作循环。所述连杆包括连接臂330、第一弹簧332和滑块334，所述第一弹簧332的一端与连接臂330固定，第一弹簧332另一端与滑块334固定，所述滑块334与连接臂330滑动连接，所述连接臂330固定第一弹簧332的一端与锁止杆302铰接，所述连接臂330设置滑块的一端通过滑块334与所述曲柄铰接。当锁止杆302顶住内桶底部其他位置，不能被驱动时，所述滑块334会在连接臂上滑动，压缩第一弹簧332，使电机转过驱动的最高点，电机继续驱动锁止杆302向下运动复位，重新进入下一工作循环。
所述连接臂中间设有一凹槽/豁口339，所述第一弹簧332和所述滑块334串联后沿长度方向设置在该凹槽/豁口339内，所述滑块334与凹槽/豁口339滑动连接，所述第一弹簧一端与凹槽/豁口339的端部固定，另一端与滑块334固定，
优选所述凹槽/豁口339的端部和所述滑块正对该端部端面上分别设有安装柱335，所述第一弹簧的两端分别套设在安装柱335上，
优选所述安装柱335的相互正对的两个的端面为斜面或阶梯端面。在保证压缩量情况下，可以确保第一弹簧和安装柱的装配长度最长，使弹簧的安装可靠，在压缩的时候不容易弹出，与平面端面相比，节省空间，在高度方向上所占的空间最小。
所述锁止机构还包括位置开关336，所述锁止杆302上设置位置开关的触发结构，当锁止杆302伸入锁止孔301并锁止到位后，触发结构触发位置开关，位置开关336发出锁止到位信号，当锁止杆回缩脱离锁止孔并回缩复位后，触发结构触发位置开关，发出解锁到位信号，以便洗衣机的主控板控制洗衣机进行下一步的程序。
所述位置开关336固定设置在锁止杆302的外侧的滑道上，为固定设置，所述触发结构设置在所述锁止杆302上，随锁止杆302一起运动，所述锁止杆302伸入和/或脱出锁止孔301，锁止杆上的触发结构触发所述位置开关发出锁止杆伸入和/或脱出信号，应用锁止杆的位置准确判断锁止杆是否锁止到位或者解锁到位，判断准确，结构简单。
所述位置开关336为触点开关，所述触点开关的触点朝向锁止杆302，所述锁止杆朝向触点的侧面至少包括与触点垂直距离不同的两段侧面，当锁止杆伸入锁止孔并锁止到位后，其中一段侧面与触点接触，触发触点开关发出锁止到位信号，当锁止杆回缩脱离锁止孔并回缩复位后，另一端侧面与触点接触，触发触点开关发出解锁到位信号，以便洗衣机的主控板控制洗衣机进行下一步的程序。所述两段侧面的连接处为倾斜过渡面。当锁止杆回缩的过程中，所述触点与所述倾斜过渡面接触，设置倾斜过渡面以便两端侧面与触点接触切换时的顺利进行，避免卡死锁止杆。
所述锁止杆302为柱体，可以为三棱柱或者多棱柱，至少包括第一锁止部337和第二锁止部338，第一锁止部337和第二锁止部338的直径不同，第一锁止部337的直径大于第二锁止部338的直径，当锁止杆302伸入锁止孔301并锁止到位后，第一锁止部337与触点接触，触发触点开关发出锁止到位信号，当锁止杆302回缩脱离锁止孔301并回缩复位后，第二锁止部338与触点接触，触发触点开关发出解锁到位信号，以便洗衣机的主控板控制洗衣机进行下一步的程序。或者当锁止杆302伸入锁止孔并锁止到位后，第二锁止部338与触点接触，触发触点开关发出锁止到位信号，当锁止杆302回缩 脱离锁止孔并回缩复位后，第一锁止部337与触点接触，触发触点开关发出解锁到位信号，以便洗衣机的主控板控制洗衣机进行下一步的程序。第一锁止部和第二锁止部的连接处平滑过渡。当锁止杆回缩的过程中，所述触点与所述倾斜过渡面接触，设置倾斜过渡面以便直径不同的锁止部与触点接触切换时的顺利进行，避免卡死锁止杆。
优选的所述锁止杆302为圆柱体，方便与锁止孔的配合，更容易伸入锁止孔锁止内桶，所述锁止杆的上部为第一锁止部337，所述锁止杆的下部为第二锁止部338，当锁止杆伸入锁止孔并锁止到位后，第二锁止部与触点接触，触发触点开关发出锁止到位信号，当锁止杆回缩脱离锁止孔并回缩复位后，第一锁止部与触点接触，触发触点开关发出解锁到位信号，第一锁止部的直径大于第二锁止部的直径，直径变化处通过一斜面平滑过渡，当锁止杆回缩的过程中，所述触点与所述倾斜过渡面接触，
或者所述位置开关336为感应开关，所述触发结构为信号发射部，所述信号发射部设置在锁止杆上随锁止杆302一起运动，所述感应开关固定设置在锁止杆的外侧，为固定设置，且感应开关的感应部朝向锁止杆。所述锁止杆伸入和/或脱出锁止孔，锁止杆上的发出伸入和/或脱出的信号发射部与感应开关的感应部对应，触发所述感应开关发出锁止杆伸入和/或脱出信号，应用锁止杆的位置准确判断锁止杆是否锁止到位或者解锁到位，判断准确，结构简单。信号发射部可以为磁信号或光电信号或微波信号发射部。
所述锁止杆302上分别设置锁止信号发射部和解锁信号发射部，当锁止杆302伸入锁止孔301并锁止到位后，锁止信号发射部正对感应开关的感应部，感应开关接收到锁止信号发射部发出的锁止信号并给主控板发射锁止信号；当锁止杆脱出锁止孔并回缩复位后，解锁信号发射部正对感应开关的感应部，感应开关接收到解锁信号发射部发出的解锁信号并给主控板发射解锁信号。
锁止杆外部设有一滑道304，引导锁止杆302沿滑道304方向运动，便于伸入锁止孔301，所述位置开关336设置在所述滑道的侧壁内或者设置在所述滑道的端部。若设置在滑道的侧壁内，滑道的内壁设有安装位置开关的豁口，所述位置开关336安装在该豁口内。
所述位置开关336设置在所述固定座303滑道的侧壁内或者设置在所述滑道的端部，优选所述位置开关336设置在所述旋转电机324的壳体328的安装部329的供锁止杆302通过的通孔内，所述通孔的侧壁上设有一安装位置开关336的豁口，设置在该处靠近旋转电机便于接线，可以与旋转电机的接线的走线在一起。
所述锁止机构还包括一固定壳305，所述固定壳305安装在固定座303的上部，与 固定座303固定连接，可为螺纹连接，锁止杆302和滑道304设置在固定壳305内，所述固定壳305与所述锁止杆302之间设置密封结构。所述密封结构为可伸缩结构，优选波纹形状密封套307。密封套一端与锁止杆密封连接，另一端与固定壳密封连接。
所述锁止机构与外桶之间设有密封结构，优选所述外桶上设有锁止机构的第一安装孔201，所述锁止机构的固定座安装在所述外桶底部，固定座303通过螺栓或螺钉等螺纹连接固定在外桶200的底部的外侧，所述锁止机构的固定壳安装在安装孔内，固定壳与安装孔之间设有密封结构保证该处密封不能漏水，所述密封结构为弹性密封圈。
优选所述第一安装孔201的上端向内弯折形成一折弯，固定壳的下端向外弯折形成一折弯，固定壳305伸入第一安装孔201内，固定壳305的上端抵住第一安装孔201的上端的折弯，固定壳与所述锁止杆之间设置的密封套的端部挤压在固定壳305的上端与第一安装孔201的上端的折弯之间，形成密封，第一安装孔201的下端抵住固定壳的下端的折弯，二者之间设置一密封结构，如弹性密封圈。
所述固定壳305与所述锁止杆302之间的密封结构为一可随锁止杆伸缩而伸缩的密封套307，密封套307的第一端308与固定壳305密封连接，优选所述密封套307的第一端设置在固定壳305的上端与第一安装孔201的上端的折弯之间，密封套具有弹性，形成密封，第二端309与锁止杆302密封连接，优选通过螺母挤压到锁止杆302的凸台上形成密封，这样外桶中的水不会进入固定壳中，不会破坏锁止机构300，也不会导致漏水。优选密封结构为波纹管形状的密封套307，具有一定的伸缩性，本身不能透水，还能够实现密封。所述密封套为由弹性材料制成的密封套，如橡胶套。
密封套307的第二端309处沿轴向延伸出一第三端310，所述第三端310与固定壳305的下端密封连接，所述延伸的部分为可随锁止杆伸缩而伸缩的密封套，优选为波纹管形状。所述延伸出的密封套增加了二次密封的作用，即使上面的密封出现问题，延伸出的密封套还能够起到进一步的密封的作用，提高了安全性，避免漏水。优选固定壳305的下端与固定座挤压第三端310形成密封。
以上所述仅为本发明的优选实施方式，应当指出，对于本领域的普通技术人员而言，在不脱离本发明原理前提下，还可以做出多种变形和改进，这也应该视为本发明的保护范围。

Claims (10)

  1. 一种内桶的锁止机构，包括一可沿轴向往复运动的锁止杆、供锁止杆运动的滑道和驱动锁止杆运动的驱动单元，所述驱动单元包括连杆、曲柄和旋转电机，其特征在于：所述锁止杆和所述滑道之间设置轴承。
  2. 根据权利要求1所述的一种内桶的锁止机构，其特征在于：所述锁止机构还包括固定座，所述固定座的中心设有滑道，所述轴承设置在所述滑道内，优选所述轴承的外圈与所述滑道过盈配合。
  3. 根据权利要求1或2所述的一种内桶的锁止机构，其特征在于：所述轴承为含油轴承，所述含油轴承设置在所述滑道内，含油轴承的外圈与滑道固定，所述锁止杆设置在含油轴承的内圈。
  4. 根据权利要求1或2所述的一种内桶的锁止机构，其特征在于：所述轴承为直线轴承，所述直线轴承设置在所述滑道内，直线轴承的外圈与滑道固定，所述锁止杆设置在直线轴承的内圈，优选所述直线轴承为滚动轴承。
  5. 根据权利要求1-4任一所述的一种内桶的锁止机构，其特征在于：所述连杆和曲柄之间和/或所述连杆和锁止杆之间设置空行程。
  6. 根据权利要求5所述的一种内桶的锁止机构，其特征在于：所述空行程为一段沿连杆长度方向设置的活动空间，曲柄和/或锁止杆的连接端在该活动空间运动，锁止状态不变。
  7. 根据权利要求6所述的一种内桶的锁止机构，其特征在于：所述连杆为一连接臂，所述连接臂的两端分别设置铰接孔，所述连接臂的一端的铰接孔与所述锁止杆的端部铰接，所述连接臂的另一端的铰接孔与所述曲柄铰接，所述铰接孔中的一个或两个为椭圆孔。
  8. 根据权利要求6所述的一种内桶的锁止机构，其特征在于：所述连杆包括连接臂、第一弹簧和滑块，所述第一弹簧的一端与连接臂固定，第一弹簧另一端与滑块固定，所述滑块与连接臂滑动连接，所述连接臂固定第一弹簧的一端与锁止杆铰接，所述连接臂设置滑块的一端通过滑块与所述曲柄铰接，
    优选所述连接臂中间设有一凹槽/豁口，所述第一弹簧和所述滑块串联后沿长度方向设置在该凹槽/豁口内，所述滑块与凹槽/豁口滑动连接，所述第一弹簧一端与凹槽/豁口的端部固定，另一端与滑块固定，
    优选所述凹槽/豁口的端部和所述滑块正对该端部端面上分别设有安装柱，所述第一弹簧的两端分别套设在安装柱上，
    优选所述安装柱相互正对的两个端面为斜面或阶梯端面。
  9. 根据权利要求2-8任一所述的一种内桶的锁止机构，其特征在于：所述锁止杆的上部设有一凸台，所述凸台的下部设有第二弹簧，第二弹簧一端与凸台的下表面接触，另一端固定，锁止杆向下运动时，第二弹簧被压缩，优选所述第二弹簧的另一端与固定座固定。
  10. 一种具有权利要求1-9任一所述锁止机构的洗衣机。
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