US20150107382A1 - Gear Reduction Mechanism, Washing Machine and Washing Method - Google Patents

Gear Reduction Mechanism, Washing Machine and Washing Method Download PDF

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Publication number
US20150107382A1
US20150107382A1 US14/403,008 US201314403008A US2015107382A1 US 20150107382 A1 US20150107382 A1 US 20150107382A1 US 201314403008 A US201314403008 A US 201314403008A US 2015107382 A1 US2015107382 A1 US 2015107382A1
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United States
Prior art keywords
rotation
washing
gear
speed
spur gear
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Abandoned
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US14/403,008
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English (en)
Inventor
Chen Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Sinya Electromotor Co Ltd
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CHANGZHOU MACHINE MASTER Co Ltd
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Filing date
Publication date
Priority claimed from CN 201210164423 external-priority patent/CN102684377A/zh
Application filed by CHANGZHOU MACHINE MASTER Co Ltd filed Critical CHANGZHOU MACHINE MASTER Co Ltd
Assigned to CHANGZHOU MACHINE MASTER CO., LTD. reassignment CHANGZHOU MACHINE MASTER CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, CHEN
Publication of US20150107382A1 publication Critical patent/US20150107382A1/en
Assigned to CHANGZHOU XINYA ELECTROMOTOR CO., LTD. reassignment CHANGZHOU XINYA ELECTROMOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANGZHOU MACHINE MASTER CO., LTD.
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D06F17/08—Driving arrangements for the impeller
    • 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 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/70—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H1/321—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear the orbital gear being nutating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/325—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising a carrier with pins guiding at least one orbital gear with circular holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49464—Assembling of gear into force transmitting device

Definitions

  • the present application relates to the technical field of washing machines, and particularly to a gear reduction mechanism used for a washing machine, a washing machine with this kind of gear reduction mechanism and its washing method.
  • a washing machine is a machine that can wash clean the clothes by chemical decomposition and mechanical impact function. It mainly uses a driving device to make an impeller rotate, which drives to agitate water and clothes to rotate to achieve the function of washing clothes clean.
  • the conventional driving device is a power source as a motor, the output shaft of motor transfers the torque from motor rotation to the reduction device, and then it connects the output shaft of reduction device to impeller, thereby causing the impeller to rotate.
  • the normal method is to reduce the speed of motor by the level one pulley of the reducer.
  • the reducer can setup one level or more levels via a gear reduction mechanism to achieve the reduction in certain ratio.
  • This structure is not only complicated, but also occupies a large space.
  • some current applied solution is to remove pulley and connect the motor and reducer directly, but due to that the motor itself and the reducer still in individual position, so they occupy separate mounting spaces. Therefore, the structure is not compact enough, and the volume is quite large.
  • a external rotor motor assembly is provided according to the disclosure associated with Chinese Patent Publication No. CN102142734A China invention, which includes a motor body, a driving shaft, and a transmission device.
  • the driving shaft is fixed on the transmission device and the motor itself directly drives the driving shaft.
  • the motor body has an inner diameter space, and the transmission device is mounted within the inner diameter space.
  • An object of the present application is to provide a gear reduction mechanism, wherein the speed reduction input parts and speed reduction output parts mount within a rotating body that provides rotational energy. So it compresses the volume of the whole gear reduction mechanism, and its structure is simple, compact, energy saving, low noise, and this application also provides a washing machine with the above gear reduction mechanism.
  • a gear reduction mechanism comprising:
  • a rotation body to provide rotation energy which isn't equipped with a rotation shaft; a speed reduction input part being mounted inside of the rotation body which obtains the rotation energy and is driven to rotate relative to an axis of the rotation body by the obtained rotation energy; a speed reduction output part connected to the speed reduction input part which outputs a driving force for its rotation speed being equal to or lower than the speed of the rotation body; and a first execution part and a second execution part connected to the speed reduction output part which rotates under the action of the driving force of the speed reduction output part.
  • the rotation body is a motor rotor or a pulley.
  • the above rotation body can be rotation parts that are connected by a transmission, such as a gear or sprocket, for example.
  • the motor rotor or the pulley comprises a driving frame, and an empty cavity that is located inside of the driving frame.
  • the speed reduction input part is mounted inside of the empty cavity of the speed reduction input part, and comprises an eccentric sleeve which connects to the driving frame and rotates around the axis of the driving frame.
  • the rotation body is defined as a motor rotor
  • the above driving frame is defined as a rotor frame and when the rotation body is defined as a pulley, the above driving frame is defined as a pulley bracket.
  • the rotor frame and the pulley bracket can either be integrated or combined.
  • the speed reduction output parts comprise a spur gear being set over on the external of the eccentric sleeve and rotationally connecting to it and the spur gear revolves around an axis of the driving frame together with rotation of the eccentric sleeve.
  • a ring gear is connected to the second execution part or the first execution part and the spur gear is mounted inside of the ring gear so that the spur gear rotates around itself by its engagement with the internal teeth of the ring gear during the period of revolution.
  • a connection device connects the spur gear to the first execution part or the second execution part.
  • connection device is a slipper structure and comprises a cross slipper which goes through the first execution part or the second execution part, and its lower end surface slidingly connects to the upper end surface of the spur gear.
  • a positioning slipper connects slidingly to the upper end surface of the cross slipper and the center of the positioning slipper fixedly connects to one of the first execution part or the second execution part.
  • the cross slipper includes a disk body that passes through the center of the first execution part and the second execution part.
  • a pair of tabs sets are respectively located at the upper end surface of disk body and radial relative to the body and a pair of tab sets are respectively located at the lower end surface of disk body and radial relative to the body such that its extension line and the extension line of a pair of lower tabs are respectively oriented in cross locations in space.
  • the positioning slipper includes a slipper body having a cylindrical shape, and its center is fixedly connected with the above first execution part or the second execution part.
  • One pair of ear panels sets at both sides of the slider and along the radial opposite direction, in which respectively sets the grooves are positioned to match the respective pairs of tab.
  • the upper end surface of the above spur gear sets one pair of gear groove in a radial opposite direction and corresponds to the position of one pair of the lower tabs.
  • the connection device comprises a body of a connection plate, and the body of the connection plate slidingly connects to the spur gear by the connection of an axle hole being inserted with a pin.
  • the shaft hole pin inserted connection is, the above shaft hole is located in the body of connecting plate, and the connection pin is located at the spur gear, and the shaft hole and connection shaft pin are insert connected by the way of a slide connection. It can also be the above shaft hole is located at the spur gear, and the connection shaft pin is located at the body of connecting plate, and the shaft hole and connection shaft pin are insert connected by the way of slide connection. It can also be that the above shaft hole is separately located at the body of connecting body and spur gear, and to slide connect the shaft hole by using connecting shaft pins individually.
  • the quantity of the above shaft hole and connection pin associations can be several, specifically for example chosen between 4-12, and preferably between 6-8 pin and hole associations.
  • the eccentric sleeve comprises a second tube which fixedly connects to the driving frame and rotates around the axis of the driving frame.
  • a first tube fixedly connects to the upper end surface of the second tube and rotates around the axis of the driving frame eccentrically and wherein, the spur gear is rotationally mounted on an outside of the first tube.
  • connection device in the present application can utilize other connection parts or methodologies to realize with the present technology.
  • the present application also provides a washing machine, including any one of the gear reduction mechanisms mentioned above, wherein the first execution part is a wash shaft, and the second execution part is a spin tube.
  • the first execution part is a wash shaft
  • the second execution part is a spin tube.
  • the washing machine in the present application also comprises a clutch coil assembly within the housing assembly, and it is axial sliding sleeved cooperation on the external wall of the above ring gear, and it is tooth engaged with or disengaged with the teeth at one end of the above driving frame by sliding in an axial direction.
  • the above clutch coil assembly includes an electromagnetic coil that is fixed within housing and the slider is within the inner wall of the above electromagnetic coil assembly.
  • the slider and the above ring gear are slide connected, and the teeth groove setting is located at its bottom, which can teeth engage with the teeth at one side of the above driving frame.
  • the present application also provides a washing method, comprising the following steps in sequences:
  • the above washing method further comprises the steps as follows:
  • the wash shaft transfers the reactive force that a washing load exerts on it to the washing output parts; and the washing output shaft transfers the reactive force that the washing load exerts on to the spinning output part, then the interaction force between the washing output part and the spinning output part are changed to allow the self rotation speed of the washing output part and the spinning output part to vary with the washing load.
  • the gear reduction mechanism in the present application sets the speed reduction input parts and speed reduction output parts inside the rotation body, so it can best utilize the internal space of rotation body, reduce the volume of gear reduction mechanism, so further beneficial for the miniaturization of the washing machine.
  • the spur gear in the gear reduction mechanism of the present application not only revolves around the eccentric sleeve, but also meshes with the ring gear and rotates around by itself.
  • the wash shaft and spin tube can rotate in opposite directions at the same time, which can reduce the energy consumption of motor and also reduce the noise.
  • the present application is to use a connection device to connect the spur gear to the wash shaft or spin tube.
  • the spur gear can obtain the eccentric torque deviated from the axis of rotating body by rotating with the eccentric sleeve.
  • the transmission efficiency is high, structure is compact, volume is small, and also easy to install and to use.
  • the present application is to consider the rotating body that provides power as one part of the gear decelerating device, and the rotation body can be either a motor rotor or a pulley. It not only makes the structure of gear reduction mechanism much more compact, and occupied space is smaller, but also reduces the consumption of connection parts in largo quantity, so it fluffier reduces the production cost of washing machine.
  • FIG. 1 is a cross-sectional schematic view showing the structure of a gear reduction mechanism according to a first embodiment of this application;
  • FIG. 2 is an exploded perspective view of the gear reduction mechanism according to the first embodiment of the invention.
  • FIG. 3 is a perspective view of a positioning slipper according to the first embodiment of the invention.
  • FIG. 4 is a perspective view of a cross slipper according to the first embodiment of the invention.
  • FIG. 5 is a perspective view of a spur gear according to the first embodiment of the invention.
  • FIG. 6 is a perspective view of an eccentric sleeve according to the first embodiment of the invention.
  • FIG. 7 is a view similar to FIG. 1 of a gear reduction mechanism according to a second embodiment of the invention.
  • FIG. 8 is an exploded plan view the gear reduction mechanism according to the second embodiment of the invention.
  • FIG. 9 is a plan view of a connection plate according to the second embodiment of the invention.
  • FIG. 10 is a right side view of the connection plate as shown in FIG. 9 ;
  • FIG. 11 is a perspective view of a spur gear according to the second embodiment of the present invention.
  • FIG. 12 is a perspective view of a rotor insert according to the present invention.
  • FIG. 13 is an perspective exploded view of a gearbox assembly, spin tube, and ring gear according to the present invention.
  • FIG. 14 is a perspective view of the ring gear shown in FIG. 13 ;
  • FIG. 15 is a top plan view of the ring gear shown in FIG. 13 ;
  • FIG. 16 is a perspective view of the slider of the assembly shown in FIG. 13 ;
  • FIG. 17 is a front plan view of a gear reduction mechanism according to the present invention.
  • FIG. 18 is a schematic representation showing the rotation directions of the gear reduction mechanism and the parts of the wash shaft according to the present invention.
  • An object of the present application is to provide a gear reduction mechanism, washing machine with the gear reduction mechanism, and a washing method, which has small axial dimension, compact structure, and small occupied space.
  • FIG. 17 is a front view of the gear reduction mechanism of the present application
  • FIG. 1 and FIG. 7 are sectional views of the two gear reduction mechanism embodiments usable to form gear reduction mechanisms as shown in FIG. 17
  • the gear reduction mechanism of the present application comprise: a rotation body to provide rotation energy and which isn't equipped with a rotation shaft; a speed reduction input part being mounted inside of the rotation body which obtains the rotation energy and is driven or drove to rotate relative to an axis of the rotation body by the obtained rotation energy; a speed reduction output part connecting to the speed reduction input part which outputs a driving force for its rotation speed being equal to or lower than the speed of the rotation body; and a first execution part and a second execution part connecting to the speed reduction output part which rotates under the action of the driving force of the speed reduction output part.
  • the first execution part is a wash shaft and the second execution part is a spin tube.
  • the rotation body in the present invention is defined as a rotation body in the form of a motor rotor or a pulley, and motor rotor can either be an internal rotor of motor or be the external rotor of motor.
  • motor rotor can either be an internal rotor of motor or be the external rotor of motor.
  • the present application only states the internal rotor of motor condition. It shall be noted that, according to the technical solution described in the present application, the skilled person in the art can replace the internal rotor of motor with the external rotor of motor or pulley in either embodiment. Furthermore, when replacing with the corresponding rotor, such changes are encompassed by disclosure of the present application.
  • the internal rotor of motor obtains rotation power by rotating around its own axis.
  • the reduction input part and reduction output part can reduce the output speed of internal rotor. Due to that the reduction input part being connected with the internal rotor, the reduction input part obtains the rotation power during the internal rotor rotation around the axis, and also uses the obtained rotation power to rotate relative the rotating body.
  • the reduction input part in the present application is connected with the internal rotor as an eccentric sleeve, so the eccentric sleeve rotates around the axis of internal rotor eccentrically, and the reduction output part connected with the above eccentric sleeve rotates around the axis of internal rotor and then it converts the power from eccentrically rotation to output power whose speed equal to or less than the speed of internal rotor.
  • the reduction output part is connected with wash shaft and spin tube, and one end of wash shaft is connected with impeller (or blender, hereafter will use the same name and it is not shown in figure) of washing machine, Spin tube is connected with the internal basket of washing machine (it is not marked in figure). Spin tube 20 sets outside of wash shaft and also rotationally connects with it. Under the function of output power, wash shaft and spin tube distributes the power from the speed that equal to or less than the speed of internal rotor separately to impeller and basket, so the washing machine installed with the gear reduction mechanism in the present application can complete the function of washing clothes.
  • stator 2 is disposed inside the housing assembly 1 .
  • stator 3 Inside stator 2 , there is the internal rotor 3 that provides rotation power.
  • the internal rotor in the present application includes driving frame 31 and an empty cavity 32 inside the driving frame, so the speed of internal rotor is the speed of driving frame, and the rotation axis of driving frame is its axis of symmetry.
  • the reduction input part and reduction output part are mounted inside the driving frame, and the speed reduction input parts including: eccentric sleeve 4 is connected with driving frame 31 and rotates around the axis of driving frame, and eccentric sleeve rotates with driving frame at the same speed; the speed reduction output parts including the spur gear 6 mounting outside the eccentric sleeve and can rotationally connect with it. It can rotate with eccentric sleeve and also revolve round the axis of driving frame; the ring gear 7 is connected with spin tube 20 , and the spur gear is inside the ring gear, so the spur gear, during revolution, can also mesh engage with the teeth of ring gear to rotate around itself; the spur gear is connected with wash shaft 5 by the connection device. Thereby, it transfers the power from the rotation to wash shaft.
  • the washing machine in the present application also includes the clutch coil assembly that controls the output speed of reduction output part. It is set inside the housing, and sleeved on the outside wall of ring gear by sliding in an axial direction, and it is teeth engaged or disengaged with the teeth at one end of driving frame by axial sliding, and then the output speed of reduction output part can be equal to or less than the rotation speed of driving frame.
  • connection device to connect the spur gear to the wash shaft by a connection device, and the connection device of the present application has different structures, now it is described in detail in conjunction with embodiments hereinafter.
  • FIGS. 1 and 2 are schematic views showing the structure of a slipper as the connection device of the gear reduction mechanism of the present application
  • the motor in this embodiment includes an internal rotor motor
  • the housing assembly includes a tube housing with opening holes at two ends 11 , a motor cover connected with the bottom of housing 11 , a mounting plate 14 at the top of housing and connected with bolts 13 of motor, and housing 11 , motor cover 12 and mounting plate 14 composed as a internal space for locating stator 2 and internal rotor 3 and other parts.
  • the internal rotor of this embodiment includes a driving frame 31 and empty cavity 32 inside the driving frame, and the engaged teeth 33 at the top end of driving frame.
  • the driving frame of this embodiment including the tube rotor 34 and the rotor insert 35 inside the rotor, the rotor insert including: a tube cylinder 351 with opening holes at two ends, the engaged teeth 33 at the top and extended to the top; the base plate 352 at the bottom of tube cylinder, and opening one hole for base plate at the center.
  • the tube cylinder of rotor insert and the base plate composed as the empty cavity 32 for setting the reduction input part and reduction of output part, and the wash shaft goes through the center of the above hole of base plate, so when driving frame rotates, it has the same rotation shaft as the wash shaft, that is, the rotation axis of driving frame and wash shaft are coaxial.
  • the reduction input part, reduction output part and gearbox assembly set inside the empty cavity of internal rotor, and the speed reduction input parts include eccentric sleeve 4 , the speed reduction output parts including spur gear 6 , ring gear 7 , and connection device 8 .
  • Eccentric sleeve is fixedly connected with driving frame 31 , and eccentric sleeve rotates around the axis of driving frame.
  • eccentric sleeve includes a second tube that rotates around the same axis of driving frame and the first tube that rotates around the eccentric axis of driving frame.
  • the second tube and the first rube can either be fixedly connected as an individual part or be integrated fixedly connected in order to be convenient for processing or installation.
  • the second tube is formed as the second tube, in which, eccentric connection part 41 has the extended edge relative to the outside of the first tube 42 , and the eccentric sleeve hole goes through wash shaft inside the second tube 43 , and this eccentric sleeve hole extends upward and goes through eccentric connection part and the first tube.
  • the first tube, eccentric connection part and the second tube can use the integrated method or welding them as integrated one part.
  • the center line of the first tube and the center line of the second tube shall have a certain eccentric distance, which can be the value equal to the radius of spur gear minus the radius of ring gear.
  • the fixed connection between eccentric sleeve 4 and driving frame 31 is the stiff connection for easily transferring the rotation torque.
  • eccentric sleeve and driving frame can be formed as an integrated connection, and also can be a separable connection, i.e. connected by screw, welding and etc.
  • the tube shape rotor 34 is metal material
  • eccentric sleeve 4 uses metal material, and into tube shape rotor 34 , eccentric sleeve 4 into plastic injection tooling or casting tooling, and forming the rotor and eccentric sleeve mounting in rotor insert 35 by plastic injection or casting.
  • the outside extended edge of eccentric connection part of eccentric sleeve 4 can set several sunk part (four visible in FIG. 2 ) or tab, which can enhance the binding force for plastic injection or casting of eccentric sleeve 4 and driving frame 31 . It can meet the requirement of the stiff fixedly connection of eccentric sleeve 4 and driving frame 31 .
  • the spur gear 6 in this embodiment includes a steel ring 63 and the external teeth 60 integrated plastic injection with the steel ring, and also the upper end surface of the spur gear setting one pair of radial relative gear groove 62 .
  • the steel ring and the first tube of eccentric sleeve are rotation connected, and specifically: the external wall of the first tube 42 and the internal ring of bushing 100 are connected as interference fit, and the upper end of the extended edge of the eccentric connection part and the lower end of the outside extended edge of bushing 100 are contact connected, the external ring of bushing 100 and the internal wall of spur gear are connected as clearance fit or it can use the external wall of the first tube 42 and the internal ring of bushing 100 as clearance connection, and the upper end of the external extended edge of eccentric connection part and the lower end of the external extended edge of bushing 100 are connected, and the external ring of bushing 100 and the internal wall of spur gear are connected as interference fit.
  • eccentric sleeve 4 in order to realize the relative rotation connection between eccentric sleeve 4 and the spur gear, and also can use the following way: to improve the structure of the eccentric sleeve 4 , like using powder metallurgy material, making the eccentric sleeve 4 has the function of bushing 100 to avoid to use bushing 100 separately, so the steel ring and the eccentric sleeve that have bushing function are rotation connected.
  • the reducing discharge chute can be set inside the first tube 42 , which can reduce the manufacturing cost and also the suitable material that can lubricate in the reducing discharge chute can be added, like grease, oil cotton, which can increase the service life of eccentric sleeve.
  • the spur gear that is rotationally connected with the first tube can revolve in its same rotation direction under the rotation of eccentric sleeve. Due to that there is a certain eccentric distance between the center line of the first tube and the center line of the second tube, the rotation axis of the first tube coincide with the rotation axis of the driving frame, so when the spur gear is under revolution, actually it is rotating around the axis of driving frame eccentrically.
  • the ring gear in this embodiment is metal or plastic connection part, and even more preferably, in order to save manufacturing cost, they can be integrated as plastic injection part.
  • This metal or plastic connection part including the upper connection part 71 and lower connection part 72 at its lower section that is connected with it. As shown in FIG.
  • the upper connection part is housing, and external spline 711 setting at its external wall in axial direction, and several tab 712 setting at its internal wall in axial direction; and the lower connection part 72 is tube structure, and its top is fixedly connected with the upper connection part, and at the top and fixedly connected with the upper connection part, and internal teeth 721 inserted mounting at its internal wall, and several ribs 723 sets at the connection position of connected with the upper connection part, and several tab 722 with holes for placing spring 200 sets among the neighbored ribs 723 .
  • connection part 72 As shown in FIG. 13 , several tab in the upper connection part matches with the several tube grooves 201 setting in external wall of spin tube, which allows the ring gear to be fixedly connect with spin tube as an integrated part. Otherwise, it can use welding or other method to stiff connected the metal connection part and spin tube, in this embodiment, the internal teeth 721 setting inside the internal wall of the lower connection part 72 can either be plastic or metal material.
  • the spur gear When the spur gear is revolving (that is to say eccentrically rotating around the axis of driving frame), its external teeth can mesh with the internal teeth of ring gear, and it is under the action force of the mesh teeth, the spur gear can rotate itself, and also now the rotation direction is opposite to its evolution direction. Also, its external teeth and the teeth of ring gear has the tooth difference relation, so it has speed differences between the revolution and self rotation of spur gear, that is, the speed of rotation around itself is lower than the speed of revolution, so the output speed is lower than the rotation speed of driving frame. Correspondingly, due to that the ring gear and spur gear has action force, it allows the ring gear to rotate together with the self rotation of spur gear, and because that the rotation direction of ring gear is opposite to the rotation direction of spur gear. That is, now the rotation direction of ring gear is the same as the rotation direction of driving frame, so the current rotation speed of ring gear is lower than the rotation speed of driving frame.
  • the spur gear under the function of the rotating eccentric sleeve and the ring gear that meshed with the tooth can revolve and rotate around itself at the same time, and the rotation direction of revolution and rotation around itself is opposite, the speed of rotation around itself is lower than the rotation speed of driving frame; and ring gear under the action force, can rotate in the opposite direction of the rotation direction of spur gear and rotate also at a speed lower than the rotation speed of driving frame.
  • cross slipper includes the disk body 851 that goes through wash shaft, a pair of lower tab sets 852 respectively at the lower end surface of disk body and radial relative to the body, a pair of upper tab sets 853 respectively at the upper end surface of disk body and radial relative to the body, and its extension line and the extension line of a pair of lower tab in spatial crossed distribution.
  • the positioning slipper includes the slipper body 861 in tube shape, and its center is fixedly connected with wash shaft, a pair of ear plate 862 sets at both sides of slipper body in radial opposite direction, and one pair of gear groove 863 setting in the ear plates separately matches with a pair of the upper tab.
  • one pair of gear groove sets at the upper end surface of spur gear in radial direction, which is corresponding to the position of one pair of the lower tab.
  • one pair of gear grooves 62 at the upper end surface of spur gear individually setting one pair of the lower tab in the cross slipper 85 , and one pair of the lower tab individually can slide within the groove of one pair of gear in corresponding position;
  • the center of the slipper body of the positioning slipper is fixedly connected with wash shaft, and make the center line of positioning slipper coincide with the centerline of wash shaft.
  • one pair of gear grooves 62 in spur gear will rotate at the same speed and in the same direction together with it. It allows one pair of the lower tab 852 inside one pair of gear groove to rotate with it, that is the cross slipper can rotate with the spur gear. Under the function of centrifugal force, one pair of the lower tab and one pair of the upper tab in cross slipper individually make radial sliding in one pair of gear groove and one pair of groove 863 , and during sliding, it runs from the axis 40 of spur gear to the axis 50 of wash shaft.
  • the upper tab drives the groove to rotate together, that is to drive the positioning slipper to rotate. Due to that the center of positioning slipper is fixedly connected with wash shaft, the positioning slipper can drive wash shaft to rotate in the same direction and at the same speed as spur gear.
  • the spur gear when the spur gear rotates eccentrically around the axis of wash shaft, through slipper structure, it can transfer the power caused by the spur gear rotating around axis 40 by itself to the power for wash shaft to rotate around its axis 50 (driving frame axis). That is, it can transfer the output from the spur gear rotates eccentrically around the axis of wash shaft to the same axis of wash shaft.
  • washing machine Due to that the washing machine has different kind of washing status during washing, it needs to adjust the output speed of the reduction output part according to different requirement of the washing status.
  • washing machine still includes a clutch coil assembly, this clutch coil assembly is setting inside the internal cavity of housing assembly, and axial sliding mounting in external wall of ring gear, and it engages or disengages to the teeth 33 at one end surface of driving frame, and further allows the speed reduction output part of gear reduction mechanism is locked or worked status, so it makes the speed reduction output part to realize low speed or high speed output.
  • the clutch coil assembly in this embodiment is electromagnetic clutch coil device, including electromagnetic coil device and slider 91 , and electromagnetic coil device placed outside the slider.
  • the electromagnetic coil device includes electromagnetic coil 92 , coil frame 93 and coil holder 94 , coil holder fixedly mounting in the mounting plate 14 of housing assembly, coil frame mounting in coil holder, and electromagnetic coil winding on the coil frame.
  • Slider 91 includes the upper connection part and the lower connection part, and its upper connection part and its lower connection part can be separately fixedly connected, or one integrated fixedly connected.
  • the upper connection part is tube structure, including the internal spline 911 setting inside and the magnetic iron ring 912 sleeved outside the upper connection part and integrated with it by plastic injection.
  • the internal spline 911 and the external spline 711 setting at the external wall of ring gear are sliding mated, and the magnetic iron ring is mated with electromagnetic coil, it can be on or off with the electromagnetic coil under the magnetic force of electromagnetic coil; many tab teeth distributed in gap set at the bottom end of the lower connection part, and each neighbored tab teeth forms as teeth groove 913 , and the teeth groove 913 matches with the engaged teeth 33 at one end surface of driving frame.
  • several material reducing chute sets around the lower connection part which can reduce production cost.
  • the electromagnetic coil When the electromagnetic coil is energized, under the action of repelling force of the electromagnetic coil, it allows magnetic iron ring to move downward to let it be away from the electromagnetic coil, and the magnetic iron ring is fixedly connected with the upper connection part of slider, and the magnetic iron ring drives the whole slider 91 to slide downward the external wall of ring gear, till the condition that the teeth groove of the lower connection part of slider and teeth of driving frame to be engaged connected, so the ring gear obtains the same rotation speed as the driving frame, it allows the speed reduction output part of the gear reduction mechanism to be locked status.
  • the electromagnetic coil in the gearbox assembly is energized, the electromagnetic coil and the magnetic iron ring 912 setting outside the slider interacted with each other to form an enclosed magnetic circuit, so the magnetic iron ring under the spelling force of magnetic to drive slider to slide downward the external wall of ring gear (the direction as shown in FIG. 1 ), and during the sliding process, slider compresses the spring in ring gear.
  • Several teeth groove setting at the lower connection part of slider is engaging connected with the teeth at one end of driving frame. It allows slider and driving frame integrated as one part. It allows spin tube and driving frame to be integrated as one part, and it allows spin tube to have the same rotation speed as driving frame.
  • the rotational inertia of basket connected with spin tube is larger than the rotational inertia of the impeller connected with wash shaft, so the spur gear of the speed reduction output parts fixed connected by the wash shaft and ring gear are in locked status. Thereby, it allows the speed reduction output part to be locked status under the large rotational inertia basket.
  • the whole speed reduction input parts and speed reduction output parts rotate at high speed together with driving frame, and further it drives the connected wash shaft to rotate at high speed with the driving frame. It allows the basket connected with spin tube to drive the impeller connected with wash shaft to rotate at high speed, thereby achieving the spinning function for washing clothes.
  • the electromagnetic coil When washing the clothes, the electromagnetic coil is energized, and the magnetic circuit of electromagnetic coil and the magnetic iron ring disappears.
  • the slider will not receive the function of magnetic force. Under the reaction force of spring, the slider moves upward the external wall of ring gear. It allows many teeth groove setting at the connection part at the lower part of slider to be off from the teeth of one side of driving frame. Thereby it allows the speed reduction input part and speed reduction output part to be in working status.
  • the ring gear rotates under its action.
  • the slipper structure of the speed reduction output parts also rotate with it.
  • the spur gear rotates around the axis of the spur gear in clockwise direction at a speed that is lower than the rotation speed of driving frame, the spur gear transfers the action force through one pair of gear groove 62 to the pair of the lower tab slide installed in one pair of gear grooves. It allows the cross slipper to rotate with spur gear in clockwise direction.
  • the cross slipper composed by the sliding connection between one pair of groove 863 and one pair of the upper tab on cross slipper to rotate in clockwise direction due in part to the center of positioning slipper being fixedly connected with wash shaft.
  • the positioning slipper rotates in clockwise direction, it drives wash shaft to rotate in clockwise direction at the same as shown by the arrow at the internal side in FIG. 18 .
  • the driving frame rotates at high speed
  • the speed reduction input parts and speed reduction output parts in this embodiment, it can drive the spin tube connected with ring gear and the impeller connected with wash shaft to obtain the rotation speed that lower than the speed of driving frame in opposite direction. It solves the difficulty faced in current technology that lots of energy consumption for fixing the spin tube during washing.
  • This embodiment is provided to set the speed reduction input device, speed reduction output parts and clutch coil device inside the internal rotor, which effectively utilizes the internal space of internal rotor, reduces the volume of washing machine, and facilitates miniaturization of the production of washing machine.
  • it uses the sliding structure to connect the spur gear to wash shaft, so it transfers the eccentric output around the axis of wash shaft to the concentric output around the axis of wash shaft, which avoids the reduction device to cause unnecessary vibration during working process.
  • FIGS. 7 and 8 are schematic views showing the structures of the gear reduction mechanism in connection plate structure according to the present invention.
  • the motor in this embodiment can be an internal rotor motor.
  • the internal rotor with empty cavity sets inside the housing assembly.
  • the speed reduction input device, the speed reduction output part and clutch coil assembly are set inside the empty cavity of internal rotor.
  • the speed reduction input parts includes an eccentric sleeve 4 .
  • the speed reduction output parts includes spur gear 6 , ring gear 7 and connection device 8 .
  • the connection device is a connection plate structure.
  • the housing assembly, clutch coil assembly, the eccentric sleeve, ring gear in speed reduction input parts and speed reduction output parts are the same as in embodiment 1, and they will not be repeated hereinafter.
  • the corresponding description regarding the structure of spur gear connected with the connection device and the connection device follows.
  • the spur gear 6 in this embodiment includes steel ring 63 and the external gear 60 which is located outside the steel ring and also integrated with the steel ring by plastic injection. Many connection holes 61 are provided for placing connection pins and shafts located evenly around the steel ring.
  • the steel ring is connected with the first tube of eccentric sleeve by rotation connected, and the detailed connection way is the same as the embodiment 1, so it will not be repeated here.
  • connection plate in this embodiment includes connection plate and many connection pins and shafts contacted with connection plate by sliding, it drives the connection plate to rotate through the fiction force.
  • the connection plate has the body 81 of connection plate in plate shape, and its center goes through the wash shaft and is fixedly connected with wash shaft.
  • it can set one cylinder tube 84 at the middle of the upper end of the body of connection plate, and it fixedly connects with wash shaft by the teeth profile inside the internal wall of cylinder tube.
  • the body of connection plate and the cylinder tube forming in one part or by using welding to integrate them together.
  • connection pins and shafts are located evenly around the body of connection plate, and many connection pins and shafts setting separately inside each through hole by sliding contact. Specifically, one end of each connection pin and shaft is fixedly installed inside one connection shaft of spur gear, another end of each connection pin and shaft is mounted inside one connection shaft of the body of connection plate, it is sliding along the inner wall of the through hole.
  • the number of through hole of the body of connection plate and the connection pins and shafts is provided as six such associations.
  • the internal diameter of the through hole is larger than the outside diameter of connection pins and shafts.
  • connection pins and shafts When installation, firstly putting one end of the six connection pins and shafts fixedly inside the six connection shaft holes of the spur gear, and then putting another end of the six connection pins and shafts separately mounting inside six through holes of the body of connection plate, it shall ensure that the external surface of the six connection pins and shafts to be tangent with the inner wall of the six through holes correspondingly.
  • the speed reduction input parts and speed reduction output parts transfers the rotation force of internal rotor by the following action.
  • washing machine enters spinning mode: now the electromagnetic coil works with the magnetic iron ring 912 at the outside of slider to form one enclosed magnetic route. Now the magnetic iron ring may slide downward (as show by the downward direction in FIG. 7 ) along the external wall of ring gear under the magnetic repelling force. During the sliding process, it compresses the spring setting in ring gear. It allows many teeth grooves at the lower connection part of slider to engage with the teeth at the end of driving frame. It drives the slider and driving frame to connect as one part. Further, it combines the spin tube with driving frame as one part, thereby spin tube has the same rotation speed as driving frame.
  • the rotational inertia of basket connected with spin tube is larger than the rotational inertia of the impeller connected with wash shaft, so the spur gear of the speed reduction output parts fixed connected by the wash shaft and ring gear are in locked status. Thereby, it allows the reduction output part to be locked status under the large rotational inertia basket.
  • the whole speed reduction input parts and speed reduction output parts rotate at high speed together with driving frame, and further it drives the connected wash shaft to rotate at high speed with the driving frame. It allows the basket connected with spin tube to drive the impeller connected with wash shaft to rotate at high speed, thereby achieving the spinning function for washing clothes.
  • washing machine When the electromagnetic coil in clutch coil device is de-energized, washing machine enters washing mode wherein the enclosed magnetic route formed by the electromagnetic coil and the magnetic iron ring disappears, and the slider is not affected by the function of the magnetic force, so under the spring restoring force, slider moves upwards along the external wall of ring gear, which disengages many teeth groove at the lower connection part of slider to the teeth at the end of driving frame, thereby allowing the speed reduction input part and speed reduction output part to enter the following working mode.
  • the connection plate of speed reduction output part rotates according to the self rotation of spur gear, and it drives wash shaft to rotate in the same direction and at the same speed as spur gear, further, it transfers the eccentric output caused by that spur gear rotates around the axis of wash shaft eccentrically to output caused by that spur gear rotates along the axis of wash shaft direction.
  • the six connection pins and shafts fixedly mounting in the holes of the six connection shafts of spur gear synchronous rotates with it.
  • the six connection pins and shafts drives the body of connection plate and also allows the body of connection plate to rotate synchronously together with the rotation of spur gear.
  • the round tube at the upper end surface of the body of connection plate is fixedly connected to wash shaft, when the body of connection plate rotates, it drives the wash shaft to do synchronous rotation.
  • the gear reduction mechanism may have other embodiments.
  • the present application also provides a washing machine, including any gear reduction mechanism in the first embodiment or the second embodiment of the present application, a washing machine that uses any one of the above gear reduction mechanisms has a compact structure, a small volume, and is convenient for product manufacturing in smaller size.
  • the present application also provides one washing method that includes the following procedures: fixedly connect the input part of a speed reduction mechanism to the power parts providing the rotation driving power; fixedly connect the spinning output part of speed reduction mechanism to the spin tube of washing machine; connect the washing output part of speed reduction mechanism to the wash shaft of washing machine; by connecting the above washing output parts to the above input part, the agitating output parts can revolve around the axis of the above power parts; and by mesh connection between the spinning output parts and agitating output parts, then the spinning output parts and the agitating output parts can interact and they can rotate around their own axis separately. So they can drive wash shaft and spin tube to rotate individually to achieve to wash clothes.
  • the above washing method also including the following procedures: during the rotation of the above wash shaft, the above wash shaft transfers the reactive force from the washing load to the above washing output parts; and the above washing output shaft transfers the reactive force from the washing load to the above spinning output parts. Now by changing the interaction force between the above washing output parts and the above spinning output parts, so the individual rotation speed of above agitating output part and the above spinning output part will vary according to the washing load.
  • snag rings or others that have the same function as a snag ring shall be added in proper position of wash shaft or spin tube as above in the first embodiment and the second embodiment.
  • washer or others that have the same function as washer shall be added in suitable position of wash shaft.
  • many bushings and many ball bearings shall be set in different sections, like setting many bushings between wash shaft and spin tube, and setting many ball bearings between ring gear and spin tube, mounting plate and spin tube, and end cover of motor and wash shaft. Further, the above ball bearings can be deeply grooved ball bearings.
  • the sleeve can be set between the ball bearing disposed between end cover of motor and wash shaft and wash shaft as the function of bushing.
  • a small seal is set between wash shaft and spin tube, and a big seal is set between spin tube and mounting plate.
  • a cushion pad made of plastic material or elastic material shall be added among assembly parts, and under the condition of achieving the mounting strength or the related functions, the housing assembly uses cast aluminum material, or the ring gear uses plastic material.
US14/403,008 2012-05-24 2013-01-28 Gear Reduction Mechanism, Washing Machine and Washing Method Abandoned US20150107382A1 (en)

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CN 201210164423 CN102684377A (zh) 2012-05-24 2012-05-24 一种电机减速器
CN201210164423.8 2012-05-24
CN201220402111 2012-08-14
CN201220402111.1 2012-08-14
CN201210335339 2012-09-11
CN201210335339.8 2012-09-11
PCT/CN2013/071057 WO2013174158A1 (zh) 2012-05-24 2013-01-28 一种齿轮减速装置、洗衣机及洗涤方法

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CN103427547A (zh) 2013-12-04
CN103422326A (zh) 2013-12-04
CN103427552A (zh) 2013-12-04
CN103427548A (zh) 2013-12-04
CN103427552B (zh) 2017-07-14
CN103422316A (zh) 2013-12-04
CN103427551B (zh) 2016-08-03
CN203239880U (zh) 2013-10-16
WO2013174157A1 (zh) 2013-11-28
US9562309B2 (en) 2017-02-07
CN103422316B (zh) 2016-08-17
CN103427548B (zh) 2016-08-03
CN103422326B (zh) 2015-12-23
CN103422324A (zh) 2013-12-04
CN203239881U (zh) 2013-10-16
MX2014014063A (es) 2015-07-14
CN103427550A (zh) 2013-12-04
KR20150091224A (ko) 2015-08-10
CN203243177U (zh) 2013-10-16
CN103427551A (zh) 2013-12-04
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CN103422325B (zh) 2015-12-23
CN203270316U (zh) 2013-11-06
US20150152583A1 (en) 2015-06-04
CN103427547B (zh) 2016-03-30
CN203272738U (zh) 2013-11-06
CN103427549B (zh) 2017-04-05
CN103422324B (zh) 2015-10-28
CN103427549A (zh) 2013-12-04
BR112014029147B1 (pt) 2021-05-11
KR20150091225A (ko) 2015-08-10
BR112014029151A2 (pt) 2018-05-15
CN203166687U (zh) 2013-08-28
CN203243178U (zh) 2013-10-16
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BR112014029147A2 (pt) 2018-05-15
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