WO2020042854A1 - 一种洗衣机用驱动装置 - Google Patents

一种洗衣机用驱动装置 Download PDF

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Publication number
WO2020042854A1
WO2020042854A1 PCT/CN2019/098401 CN2019098401W WO2020042854A1 WO 2020042854 A1 WO2020042854 A1 WO 2020042854A1 CN 2019098401 W CN2019098401 W CN 2019098401W WO 2020042854 A1 WO2020042854 A1 WO 2020042854A1
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WIPO (PCT)
Prior art keywords
bearing
washing machine
housing
rotor
casing
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Ceased
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PCT/CN2019/098401
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English (en)
French (fr)
Inventor
卢金波
冯晨
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Qingdao Haier Drum Washing Machine Co Ltd
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Qingdao Haier Drum Washing Machine Co Ltd
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Application filed by Qingdao Haier Drum Washing Machine Co Ltd filed Critical Qingdao Haier Drum Washing Machine Co Ltd
Publication of WO2020042854A1 publication Critical patent/WO2020042854A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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 

Definitions

  • the invention belongs to the field of washing equipment, and particularly relates to a driving device for a washing machine.
  • the existing drum washing machine especially the DD motor drum washing machine, is provided with a bearing seat integrally on the bottom of the outer bucket, and large bearings and small bearings are installed in the bearing seat.
  • the DD motor is installed outside the bottom of the outer bucket of the outer bucket.
  • the total thickness of the DD motor at the bottom of the outer barrel is very large, causing the size of the front and back of the drum washing machine to be too large.
  • Chinese Patent Application No. CN200810110896.3 discloses a drum washing machine.
  • the bearing seat is embedded in the rear of the outer tub and is prefabricated into an integrated structural part through an injection molding process to improve the space between the outer tub and the bearing seat and between the bearing seat and the drum shaft.
  • the fastening effect between them provides effective vibration reduction and noise reduction for high-speed rotation and dehydration of the drum.
  • It mainly has a shell, and an outer bucket for storing washing water is arranged inside the shell.
  • a motor for providing driving force is connected and fixed at the rear side of the outer bucket.
  • a drum that can rotate and wash is provided inside the outer tub.
  • a drum shaft that transmits a motor driving force to the drum is connected to the rear portion of the drum and penetrates the rear portion of the outer tub, and the rear end of the drum shaft is connected to the motor rotor.
  • a cylindrical bearing seat is provided at the rear of the outer bucket, and the bearing seat is embedded in the rear of the outer bucket and is prefabricated into an integrated structural part through an injection molding process. Inside the bearing block, a front bearing and a rear bearing for supporting the roller shaft are provided, and the front bearing and the rear bearing are pressed into the bearing block with an interference fit.
  • a bearing seat is integrally provided on the outer tub of the washing machine, and then the stator and the rotor of the motor are arranged outside the bearing seat, so that the overall capacity of the washing machine becomes smaller, the front and rear dimensions of the washing machine are increased, and the washing machine is increased The space occupied complicates the assembly process and increases labor costs.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and provide a driving device for a washing machine, in which a stator and a rotor of the driving device are arranged inside a casing, and the capacity of the washing machine and the width of the whole machine are maintained.
  • the front and rear external dimensions of the washing machine are reduced, the space occupied by the washing machine, especially the drum washing machine, is greatly reduced, and the process and labor costs are saved.
  • a driving device for a washing machine includes a rotor, a casing, and a stator mounted on the casing.
  • a first bearing is mounted on the casing, a driving shaft of the washing machine passes through the rotor, and an end portion is supported and mounted on the first On a bearing.
  • stator and the rotor of the driving device are arranged inside the casing, and a first bearing is installed on the casing to cooperate with the driving shaft of the washing machine, while maintaining the capacity of the washing machine and the width of the whole machine, making the The front and rear dimensions are reduced, which greatly reduces the space occupied by washing machines, especially drum washing machines, and saves process and labor costs.
  • the casing includes a first casing located on a side of the stator away from the outer tub of the washing machine, the stator is mounted on the first casing, the first casing is mounted on the outer tub of the washing machine, and the first A housing is provided with a first bearing seat, the first bearing is installed in the first bearing seat, and the driving shaft end portion of the washing machine is supported and mounted on the first bearing in the first bearing seat.
  • the end of the driving shaft of the washing machine is supported and mounted on the first bearing, thereby preventing the driving shaft from shaking.
  • the housing is further provided with a second bearing, and the rotor and the stator are installed in the housing between the first bearing and the second bearing;
  • the driving device is provided outside the bearing seat at the bottom of the outer tub.
  • a second bearing is provided on the second housing, and the rotor and the stator are installed in the housing and located between the first bearing and the first bearing.
  • the drive shaft of the washing machine passes through the second bearing and the rotor, and the end portion is supported and mounted on the first bearing in the first bearing seat.
  • the casing includes a first casing and a second casing, the first casing and the second casing are fastened and fixed inside to form a mounting cavity for mounting the stator and the rotor, and the first casing
  • the body is provided with the first bearing seat
  • the second housing is correspondingly provided with a second bearing seat.
  • a second bearing is installed in the second bearing seat.
  • the drive shaft of the washing machine passes through the second bearing and the rotor in sequence.
  • An end support is mounted on the first bearing.
  • the first case and the second case are cast aluminum or sheet metal stamping structures, and the first case and the second case are press-fitted with the first bearing and the second bearing, respectively.
  • the second casing has a cavity
  • the first casing is a plate-like structure
  • the first casing covers and is installed on the opening of the cavity of the second casing and is fixed to the first casing.
  • the rotor and the stator are both contained in the cavity, and the stator is fixedly connected to the first casing.
  • a recessed mounting portion is provided in the middle of the bottom of the outer barrel, the second casing is mounted in the mounting portion, and the stator is fixed to the stator by a connection method such as a screw or a claw.
  • the first casing and the second casing are combined together by welding or screw connection, together with the first bearing, the second bearing, the stator, and the rotor that have been previously press-fitted and fixed.
  • the first casing and / or the second casing are fixed to the bottom of the outer tub by bolts and positioning posts, and the complete driving apparatus can be integrally installed or disassembled.
  • an oil seal is installed on the second bearing seat on the second housing;
  • the second bearing seat is provided with an annular boss extending to the side of the outer barrel, the oil seal includes an annular body, and the annular body is mounted on the annular boss.
  • the rotor includes a limiting portion, the limiting portion is limited on the second bearing or the second bearing seat, and the second bearing or the second bearing seat limits the movement of the rotor in the radial direction.
  • the design of the limiting portion ensures stable operation of the stator and prevents the stator from oscillating in the radial direction, thereby ensuring stable rotation of the drive shaft without oscillating.
  • the rotor includes a hollow shaft body coaxially disposed with the first bearing and the second bearing and having a mounting hole inside, and the limiting portion includes an open end of the hollow shaft body protruding to the inner ring of the second bearing.
  • a limiting protrusion which is in contact with the inner wall of the inner ring of the second bearing.
  • the inner wall of the mounting hole is provided with an internal spline arranged along the axial center direction, an external spline is correspondingly arranged on the drive shaft, and the limiting portion is the tooth end of the internal spline outward along the axis.
  • a limiting protrusion formed on one side of the bucket extends to the inner ring of the second bearing and is in contact with the inner surface of the inner ring. The second bearing limits the wobble of the rotor in the radial direction.
  • the external splines of the drive shaft and the internal splines in the mounting hole are meshed and driven, and the tooth ends of the internal splines are in contact with the inner ring of the second bearing, and the second bearing restricts the drive shaft from shaking.
  • the diameter of the inner ring of the first bearing is smaller than the diameter of the inner ring of the second bearing
  • the drive shaft includes a first shaft segment that is in interference fit with the first bearing and a second shaft that is in interference fit with the second bearing. Segment, the first shaft segment is supported and mounted on the first bearing through the second bearing and the mounting hole, and the second shaft segment is in interference fit with the second bearing.
  • the rotor includes an extension structure protruding in the radial direction by the hollow shaft body, and an edge of the extension structure is bent toward a side of the first housing to form an annular cavity, and the stator is accommodated in the annular shape.
  • the chamber is connected and fixed with the first casing.
  • the present invention has the following beneficial effects compared with the prior art:
  • the driving device for a washing machine comprises a rotor, a casing, and a stator mounted on the casing.
  • a first bearing is mounted on the casing, a driving shaft of the washing machine passes through the rotor, and an end portion is mounted on
  • the stator and the rotor of the driving device are arranged inside the casing, and the bearing is provided on the casing, so that the front and rear shapes of the washing machine are maintained while the capacity of the washing machine and the width of the whole machine are kept unchanged.
  • the reduced size greatly reduces the space occupied by washing machines, especially drum washing machines, and saves process and labor costs.
  • the inner wall of the mounting hole is provided with an internal spline arranged along the axial center direction, an external spline is correspondingly arranged on the drive shaft, and a limiting portion of the rotor is a tooth of the internal spline.
  • a limiting protrusion formed by extending along the axis to one side of the barrel, the limiting protrusion extending to the inner ring of the second bearing and in contact with the inner surface of the inner ring, the second bearing restricts the rotor in the radial direction Shaking.
  • the external splines of the driving shaft and the internal splines in the mounting hole are meshed and driven.
  • the tooth ends of the internal splines are in contact with the inner ring of the second bearing, and the second bearing restricts the drive shaft from shaking.
  • FIG. 1 is a schematic structural diagram of a driving device for a washing machine according to the present invention.
  • FIG. 2 is an enlarged view of a portion A in FIG. 1;
  • FIG. 3 is a schematic structural view of the driving device for a washing machine according to another aspect of the present invention.
  • stator 1, stator; 2, rotor; 3, first housing; 31, first bearing housing; 311, first bearing; 4, second housing; 41, second bearing housing; 411, second bearing; 5. Oil seal; 6. Hollow shaft body; 61. Internal spline; 62. Limiting convex part; 7. Screw hole; 8. Screw hole.
  • connection should be understood in a broad sense unless otherwise specified and limited, for example, it may be a fixed connection, a detachable connection, or an integrated Ground connection; it can be mechanical or electrical connection; it can be directly connected or it can be indirectly connected through an intermediate medium.
  • installation and “connection” should be understood in a broad sense unless otherwise specified and limited, for example, it may be a fixed connection, a detachable connection, or an integrated Ground connection; it can be mechanical or electrical connection; it can be directly connected or it can be indirectly connected through an intermediate medium.
  • the present invention provides a driving device for a washing machine, which includes a rotor 2, a housing, and a stator 1 mounted on the housing.
  • the housing also has a first bearing 311, and a drive shaft of the washing machine is passed through. An end portion is supported and mounted on the first bearing 311 through the rotor 2.
  • stator 1 and the rotor 2 of the driving device are arranged inside the casing, while the capacity and the width of the whole machine are kept unchanged, the front and rear dimensions of the washing machine are reduced, and the washing machine, especially the drum is greatly reduced.
  • the space occupied by the washing machine saves process and labor costs.
  • the casing comprises a first casing 3 located on a side of the stator 1 away from the outer tub of the washing machine, the stator 1 is mounted on the first casing 3, and the first casing 3 is mounted on the outer tub of the washing machine
  • the first housing 3 is provided with a first bearing seat 31.
  • the first bearing 311 is installed in the first bearing seat 31.
  • the drive shaft of the washing machine passes through the rotor 2, and the end portion is supported and installed. On the first bearing 311 in the first bearing seat 31.
  • the end of the driving shaft of the washing machine is supported and mounted on the first bearing 311, thereby preventing the driving shaft from shaking.
  • the housing is further provided with a second bearing 411, and the rotor 2 and the stator 1 are installed in the housing between the first bearing 311 and the second bearing 411;
  • the driving device is provided outside the bearing seat at the bottom of the outer tub.
  • a second bearing 411 is provided on the second casing, and the rotor 2 and the stator 1 are installed in the casing and located at the first position.
  • the bearing 311 and the second bearing 411 it is equivalent to arranging the driving device inside the bearing seat, so that while maintaining the capacity of the drum washing machine and the width of the whole machine, the front and rear dimensions of the whole machine are reduced, and the drum is greatly reduced.
  • the space occupied by the whole washing machine saves process and labor costs.
  • a second bearing 411 is installed on the outer tub of the washing machine
  • the drive shaft of the washing machine passes through the second bearing 411 and the rotor 2, and an end portion is supported and mounted on the first bearing 311 in the first bearing seat 31.
  • the casing includes a first casing 3 and a second casing 4, and the first casing 3 and the second casing 4 are fastened and fixed inside to form a mounting cavity for mounting the stator 1 and the rotor 2.
  • the first housing is provided with the first bearing housing 31, the second housing is correspondingly provided with a second bearing housing 41, a second bearing 411 is installed in the second bearing housing 41, and the driving of the washing machine
  • the shaft passes through the second bearing 411 and the rotor 2 in order, and an end portion is supported and mounted on the first bearing 311.
  • the first casing 3 and the second casing 4 are cast aluminum or sheet metal stamping structures, and the first casing 3 and the second casing 4 are press-fitted with the first bearing 311 and the second casing, respectively. Bearing 411.
  • the second casing has a cavity
  • the first casing 3 is a plate-like structure.
  • the first casing 3 covers the opening of the cavity of the second casing 4 and communicates with the first casing.
  • the housing 3 is fixedly connected, the rotor 2 and the stator 1 are both contained in the cavity, and the stator 1 is fixedly connected to the first housing.
  • a recessed mounting portion is provided in the middle of the bottom of the outer barrel, the second housing 4 is mounted in the mounting portion, and the stator 1 is fixed to the connection portion by screws or claws.
  • the first housing 3 On the first housing 3; the first housing 3 and the second housing 4 are joined together by welding or screw connection, together with the first bearing 311 and the second bearing 411 which are press-fitted and fixed before The stator 1 and the rotor 2 become a complete driving device; further, the first casing and / or the second casing are fixed to the bottom of the outer barrel by bolts and positioning posts, and the complete driving device is described. Can be installed or removed as a whole.
  • a plurality of screw holes 7 are provided on the first housing 3 around the first bearing, and the stator is fixed on the screw holes 7 by screws.
  • the peripheral edge of the second casing shown is turned outwards to form a mating surface.
  • the first casing 3 shown is a circular plate-like structure, and the peripheral side of the circular plate-like structure is provided. There are a plurality of openings, and a connection plate is provided between the two openings.
  • a screw hole 8 is provided on the outer edge of each connection plate, and a screw hole 8 is correspondingly provided on the edge of the mating surface. Further, a screw hole 8 is provided on the matching surface at a position corresponding to the notch, so as to be fastened on the bottom of the outer tub of the washing machine by screws.
  • an oil seal 5 is mounted on the second bearing seat 41 on the second housing 4;
  • the second bearing seat 41 is provided with an annular boss extending to the side of the outer barrel.
  • the oil seal 5 includes an annular body, and the annular body is mounted on the annular boss.
  • the rotor 2 includes a limiting portion, and the limiting portion is limited on the second bearing 411 or the second bearing block 41, and the second bearing 411 or the second bearing block 41 limits the rotor 2 in a radial direction. activity.
  • the first bearing seat is disposed at a middle position of the first casing, and the second bearing seat is disposed at a middle position of the second casing.
  • the design of the limiting portion ensures stable operation of the stator 1 and prevents the stator 1 from oscillating in the radial direction, thereby ensuring stable rotation of the drive shaft without oscillating.
  • the rotor 2 includes a hollow shaft body 6 coaxially disposed with the first bearing 311 and the second bearing 411 and having a mounting hole inside, and the limiting portion includes a hollow shaft body. 6 A limiting protrusion 62 protruding from the open end to the inner ring of the second bearing 411, and the limiting protrusion 62 is in contact with the inner wall of the inner ring of the second bearing 411.
  • the inner wall of the mounting hole is provided with an internal spline 61 arranged along the axial center direction, an external spline is correspondingly arranged on the drive shaft, and the limiting portion is the tooth end of the internal spline 61 along the axis.
  • a limiting protrusion 62 extending to one side of the outer barrel is formed. The limiting protrusion 62 extends to the inner ring of the second bearing 411 and is in contact with the inner surface of the inner ring. The second bearing 411 limits the rotor 2 to Radial shaking.
  • the diameter of the inner ring of the first bearing 311 is smaller than the diameter of the inner ring of the second bearing 411
  • the drive shaft includes a first shaft segment which is in interference fit with the first bearing 311 and an interference fit with the second bearing 411
  • the second shaft segment is supported and mounted on the first bearing 311 through the second bearing 411 and the mounting hole, and the second shaft segment and the second bearing 411 are in interference fit.
  • the rotor 2 includes an extension structure protruding from the hollow shaft body 6 in a radial direction, and an edge of the extension structure is bent toward a side of the first housing 3 to form an annular cavity. It is in the annular cavity and is connected and fixed with the first shell 3.

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

Abstract

本发明公开一种洗衣机用驱动装置，包括转子、壳体和安装在壳体上的定子，所述壳体上安装有第一轴承，洗衣机的驱动轴穿过所述转子，端部支撑安装在所述第一轴承上，本发明中，将驱动装置的定子和转子设置在壳体内部，在壳体上设置轴承，在保持洗衣机容量及整机宽度不变的情况下，使得洗衣机的前后外形尺寸减小，大大减少了洗衣机尤其是滚筒洗衣机占用的空间，同时节省了工序及人工成本。

Description

一种洗衣机用驱动装置 技术领域
本发明属于洗涤设备领域，具体地说，涉及一种洗衣机用驱动装置。
背景技术
现有的滚筒洗衣机，尤其是DD电机滚筒洗衣机，其在外桶的桶底一体设置有轴承座，并在轴承座内安装有大轴承和小轴承，而将DD电机安装在外桶后桶底之外，外桶后桶底加DD电机的总厚度很大，造成滚筒洗衣机整机前后尺寸过大。
申请号为CN200810110896.3的中国专利公开一种滚筒洗衣机，将轴承座嵌入外桶后部并通过注塑工艺预制成一体式结构件，以提高外桶与轴承座之间和轴承座与滚筒轴之间的紧固作用，针对滚筒高速旋转脱水提供有效的减振、降低噪音。主要具有一外壳，在外壳内部设有一个储存洗涤水的外桶，在外桶后侧连接固定一提供驱动力的电机。在外桶内部设有可旋转进行洗涤的滚筒。向滚筒传递电机驱动力的滚筒轴，连接在滚筒的后部并贯穿所述外桶的后部，滚筒轴的后端与电机转子连接。在所述外桶的后部设有一筒形轴承座，轴承座嵌入外桶后部并通过注塑工艺预制成一体式结构件。在轴承座的内部，设有用于支承滚筒轴的前轴承和后轴承，前轴承和后轴承均以过盈配合压入到轴承座内部。该专利中，在洗衣机外桶上一体设置有轴承座，然后将电机的定子和转子设置在轴承座的外部，从而使得洗衣机整机容量变小，洗衣机的前后尺寸外形增大，增大了洗衣机占用的空间，使得装配工序复杂提高了人工成本。
有鉴于此特提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足，提供一种洗衣机用驱动装置，将驱动装置的定子和转子设置在壳体内部，在保持洗衣机容量及整机宽度不变的情况下，使得洗衣机的前后外形尺寸减小，大大减少了洗衣机尤其是滚筒洗衣机占用的空间，同时节省了工序及人工成本。
为解决上述技术问题，本发明采用技术方案的基本构思是：
一种洗衣机用驱动装置，包括转子、壳体和安装在壳体上的定子，所述壳体上安装有第一轴承，洗衣机的驱动轴穿过所述转子，端部支撑安装在所述第一轴承上。
在上述方案中，将驱动装置的定子和转子设置在壳体内部，在壳体上安装第一轴承与洗 衣机的驱动轴配合，在保持洗衣机容量及整机宽度不变的情况下，使得洗衣机的前后外形尺寸减小，大大减少了洗衣机尤其是滚筒洗衣机占用的空间，同时节省了工序及人工成本。
优选的，所述壳体包括位于定子远离洗衣机外桶的一侧的第一壳体，所述定子安装在第一壳体上，所述第一壳体安装在洗衣机外桶上，所述第一壳体上设置有第一轴承座，所述第一轴承安装在所述第一轴承座内，洗衣机的驱动轴端部支撑安装在所述第一轴承座内的第一轴承上。
在上述方案中，洗衣机的驱动轴的端部支撑安装在所述的第一轴承上，从而防止了驱动轴的晃动。
优选的，所述壳体上还设置有第二轴承，所述转子和定子安装在壳体内位于第一轴承和第二轴承之间；
在上述方案中，相对于现有技术中，将驱动装置设置在外桶底部的轴承座外部，本发明在第二壳体上设置第二轴承，转子和定子安装在壳体内位于第一轴承和第二轴承之间，相当于将驱动装置设置在轴承座内部，从而在保持滚筒洗衣机容量及整机宽度不变的情况下，整机的前后外形尺寸减小，大大减少了滚筒洗衣机整机占用的空间，同时节省了工序及人工成本。
或者洗衣机的外桶上安装有第二轴承；
其中，洗衣机的驱动轴穿过所述第二轴承和转子，端部支撑安装在第一轴承座内的第一轴承上。
优选的，所述壳体包括第一壳体和第二壳体，第一壳体和第二壳体扣合固定在内部形成用于安装所述定子和转子的安装腔，所述第一壳体上设有所述第一轴承座，所述第二壳体上对应设有第二轴承座，第二轴承座内安装有第二轴承，洗衣机的驱动轴依次穿过第二轴承和转子，端部支撑安装在所述第一轴承上。
在上述方案中，所述的第一壳体和第二壳体为铸铝或钣金冲压结构，第一壳体和第二壳体分别压装有第一轴承和第二轴承。
优选的，所述第二壳体具有凹腔，所述第一壳体为板状结构，所述第一壳体覆盖安装在第二壳体的凹腔的开口上并与第一壳体固定连接，所述的转子和定子均容纳在所述的凹腔内，定子与所述的第一壳体固定连接。
在上述方案中，外桶的桶底中部设置有内凹的安装部，所述的第二壳体安装在所述的安装部内，所述的定子通过螺钉或卡爪等连接方式固定在所述的第一壳体上；所述的第一壳体和第二壳体通过焊接或螺钉连接结合在一起，连同之前压装及固定好的第一轴承、第二轴承、 定子、转子成为一个完整的驱动装置；再者，所述的第一壳体和/或第二壳体通过螺栓及定位柱固定在外桶的桶底上，所述的完整的驱动装置可以整体安装或拆卸。
优选的，所述第二壳体上的第二轴承座上安装有油封；
在上述方案中，通过油封的设置，防止了漏水。
优选的，所述第二轴承座向外桶一侧延伸设置有环形凸台，所述油封包括环形本体，所述环状本体安装在所述环形凸台上。
优选的，所述转子包括有限位部，所述限位部限位在所述第二轴承或第二轴承座上，第二轴承或第二轴承座限制转子在径向上的活动。
在上述方案中，通过限位部的设计，保证了定子的稳定运行，防止定子在径向上的晃动，进而保证了驱动轴稳定的转动而不晃动。
优选的，所述转子包括与所述第一轴承、第二轴承同轴设置且内部具有安装孔的空心轴体，所述限位部包括空心轴体开口端向第二轴承内环伸出的限位凸部，所述限位凸部与第二轴承的内圈内壁接触配合。
优选的，所述安装孔内壁设有沿轴心方向排布内花键，所述驱动轴上对应设置有外花键，所述限位部为所述内花键的齿端沿轴线向外桶一侧延伸形成的限位凸部，所述限位凸部延伸至第二轴承的内圈并与所述内圈的内表面接触配合，第二轴承限制转子在径向上的晃动。
在上述方案中，驱动轴的外花键和安装孔内的内花键相啮合传动，各内花键的齿端与第二轴承的内圈接触配合，第二轴承限制驱动轴晃动。
优选的，所述第一轴承的内圈直径小于第二轴承的内圈直径，所述驱动轴包括与第一轴承过盈配合的第一轴段和与第二轴承过盈配合的第二轴段，所述第一轴段穿过所述第二轴承和安装孔支撑安装在所述第一轴承上，所述的第二轴段与第二轴承过盈配合。
优选的，所述转子包括由所述空心轴体沿径向凸出的延伸结构，所述延伸结构边沿向第一壳体一侧弯折形成环状腔室，所述定子容纳在所述环形腔室内，并与所述第一壳体连接固定。
采用上述技术方案后，本发明与现有技术相比具有以下有益效果：
1、本发明的洗衣机用驱动装置，包括转子、壳体和安装在壳体上的定子，所述壳体上安装有第一轴承，洗衣机的驱动轴穿过所述转子，端部支撑安装在所述第一轴承上，本发明中，将驱动装置的定子和转子设置在壳体内部，在壳体上设置轴承，在保持洗衣机容量及整机宽度不变的情况下，使得洗衣机的前后外形尺寸减小，大大减少了洗衣机尤其是滚筒洗衣机占用的空间，同时节省了工序及人工成本。
2、本发明中，所述安装孔内壁设有沿轴心方向排布内花键，所述驱动轴上对应设置有外花键，所述转子的限位部为所述内花键的齿端沿轴线向外桶一侧延伸形成的限位凸部，所述限位凸部延伸至第二轴承的内圈并与所述内圈的内表面接触配合，第二轴承限制转子在径向上的晃动。驱动轴的外花键和安装孔内的内花键相啮合传动，各内花键的齿端与第二轴承的内圈接触配合，第二轴承限制驱动轴晃动。
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
附图作为本发明的一部分，用来提供对本发明的进一步的理解，本发明的示意性实施例及其说明用于解释本发明，但不构成对本发明的不当限定。显然，下面描述中的附图仅仅是一些实施例，对于本领域普通技术人员来说，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。在附图中：
图1是本发明洗衣机用驱动装置的结构示意图；
图2是图1中A部放大图；
图3是本发明洗衣机用驱动装置的另一视角的结构示意图。
其中，1、定子；2、转子；3、第一壳体；31、第一轴承座；311、第一轴承；4、第二壳体；41、第二轴承座；411、第二轴承；5、油封；6、空心轴体；61、内花键；62、限位凸部；7、螺钉孔；8、螺钉孔。
需要说明的是，这些附图和文字描述并不旨在以任何方式限制本发明的构思范围，而是通过参考特定实施例为本领域技术人员说明本发明的概念。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对实施例中的技术方案进行清楚、完整地描述，以下实施例用于说明本发明，但不用来限制本发明的范围。
在本发明的描述中，需要说明的是，术语“上”、“下”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是 机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
参见图1-3所示，本发明提供一种洗衣机用驱动装置，包括转子2、壳体和安装在壳体上的定子1，壳体上还安装有第一轴承311，洗衣机的驱动轴穿过所述转子2，端部支撑安装在所述第一轴承311上。
在上述方案中，将驱动装置的定子1和转子2设置在壳体内部，在保持洗衣机容量及整机宽度不变的情况下，使得洗衣机的前后外形尺寸减小，大大减少了洗衣机尤其是滚筒洗衣机占用的空间，同时节省了工序及人工成本。
优选的，所述壳体包括位于定子1远离洗衣机外桶的一侧的第一壳体3，所述定子1安装在第一壳体3上，所述第一壳体3安装在洗衣机外桶上，所述第一壳体3上设置有第一轴承座31，所述第一轴承311安装在所述第一轴承座31内，洗衣机的驱动轴穿过所述转子2，端部支撑安装在所述第一轴承座31内的第一轴承311上。
在上述方案中，洗衣机的驱动轴的端部支撑安装在所述的第一轴承311上，从而防止了驱动轴的晃动。
优选的，所述壳体上还设置有第二轴承411，所述转子2和定子1安装在壳体内位于第一轴承311和第二轴承411之间；
在上述方案中，相对于现有技术中，将驱动装置设置在外桶底部的轴承座外部，本发明在第二壳体上设置第二轴承411，转子2和定子1安装在壳体内位于第一轴承311和第二轴承411之间，相当于将驱动装置设置在轴承座内部，从而在保持滚筒洗衣机容量及整机宽度不变的情况下，整机的前后外形尺寸减小，大大减少了滚筒洗衣机整机占用的空间，同时节省了工序及人工成本。
或者洗衣机的外桶上安装有第二轴承411；
其中，洗衣机的驱动轴穿过所述第二轴承411和转子2，端部支撑安装在第一轴承座31内的第一轴承311上。
优选的，所述壳体包括第一壳体3和第二壳体4，第一壳体3和第二壳体4扣合固定在内部形成用于安装所述定子1和转子2的安装腔，所述第一壳体上设有所述第一轴承座31，所述第二壳体上对应设有第二轴承座41，第二轴承座41内安装有第二轴承411，洗衣机的驱动轴依次穿过第二轴承411和转子2，端部支撑安装在所述第一轴承311上。
在上述方案中，所述的第一壳体3和第二壳体4为铸铝或钣金冲压结构，第一壳体3和第二壳体4分别压装有第一轴承311和第二轴承411。
优选的，所述第二壳体具有凹腔，所述第一壳体3为板状结构，所述第一壳体3覆盖安装在第二壳体4的凹腔的开口上并与第一壳体3固定连接，所述的转子2和定子1均容纳在所述的凹腔内，定子1与所述的第一壳体固定连接。
在上述方案中，外桶的桶底中部设置有内凹的安装部，所述的第二壳体4安装在所述的安装部内，所述的定子1通过螺钉或卡爪等连接方式固定在所述的第一壳体3上；所述的第一壳体3和第二壳体4通过焊接或螺钉连接结合在一起，连同之前压装及固定好的第一轴承311、第二轴承411、定子1、转子2成为一个完整的驱动装置；再者，所述的第一壳体和/或第二壳体通过螺栓及定位柱固定在外桶的桶底上，所述的完整的驱动装置可以整体安装或拆卸。
优选的，参见图3所示，所示的第一壳体3上环绕第一轴承一周设置有多个螺钉孔7，所述的定子通过螺钉固定在所述的螺钉孔7上。再者，参见图3所示，所示的第二壳体周侧边沿外翻，形成了配合面，所示的第一壳体3为圆形板状结构，圆形板状结构周侧设置有多个豁口，两个豁口之间具有一连接板，每一连接板的外边沿设置有螺钉孔8，所述的配合面的边沿对应设置有螺钉孔8，两者通过螺钉连接固定，再进一步的，所述的配合面上对应所述的豁口的位置设置有螺钉孔8，以通过螺钉紧固在洗衣机外桶的桶底上。
优选的，所述第二壳体4上的第二轴承座41上安装有油封5；
在上述方案中，通过油封5的设置，防止了漏水。
优选的，所述第二轴承座41向外桶一侧延伸设置有环形凸台，所述油封5包括环形本体，所述环状本体安装在所述环形凸台上。
优选的，所述转子2包括有限位部，所述限位部限位在所述第二轴承411或第二轴承座41上，第二轴承411或第二轴承座41限制转子2在径向上的活动。所述的第一轴承座设置在第一壳体的中部位置，所述的第二轴承座设置在第二壳体的中部位置。
在上述方案中，通过限位部的设计，保证了定子1的稳定运行，防止定子1在径向上的晃动，进而保证了驱动轴稳定的转动而不晃动。
优选的，参见图1和图2，所述转子2包括与所述第一轴承311、第二轴承411同轴设置且内部具有安装孔的空心轴体6，所述限位部包括空心轴体6开口端向第二轴承411内环伸出的限位凸部62，所述限位凸部62与第二轴承411的内圈内壁接触配合。
优选的，所述安装孔内壁设有沿轴心方向排布内花键61，所述驱动轴上对应设置有外花键，所述限位部为所述内花键61的齿端沿轴线向外桶一侧延伸形成的限位凸部62，所述限位凸部62延伸至第二轴承411的内圈并与所述内圈的内表面接触配合，第二轴承411限制转 子2在径向上的晃动。
在上述方案中，驱动轴的外花键和安装孔内的内花键61相啮合传动，各内花键61的齿端与第二轴承411的内圈接触配合，第二轴承411限制驱动轴晃动。
优选的，所述第一轴承311的内圈直径小于第二轴承411的内圈直径，所述驱动轴包括与第一轴承311过盈配合的第一轴段和与第二轴承411过盈配合的第二轴段，所述第一轴段穿过所述第二轴承411和安装孔支撑安装在所述第一轴承311上，所述的第二轴段与第二轴承411过盈配合。
优选的，所述转子2包括由所述空心轴体6沿径向凸出的延伸结构，所述延伸结构边沿向第一壳体3一侧弯折形成环状腔室，所述定子1容纳在所述环形腔室内，并与所述第一壳体3连接固定。
以上所述仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专利的技术人员在不脱离本发明技术方案范围内，当可利用上述提示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明方案的范围内。

Claims (10)

  1. 一种洗衣机用驱动装置，其特征在于，包括转子、壳体和安装在壳体上的定子，所述壳体上安装有第一轴承，洗衣机的驱动轴穿过所述转子，端部支撑安装在所述第一轴承上。
  2. 根据权利要求1所述洗衣机用电机，其特征在于，所述壳体包括位于定子远离洗衣机外桶的一侧的第一壳体，所述定子安装在第一壳体上，所述第一壳体安装在洗衣机外桶上，所述第一壳体上设置有第一轴承座，所述第一轴承安装在所述第一轴承座内，洗衣机的驱动轴端部支撑安装在所述第一轴承座内的第一轴承上。
  3. 根据权利要求1或2所述洗衣机用电机，其特征在于，所述壳体上还设置有第二轴承，所述转子和定子安装在壳体内位于第一轴承和第二轴承之间，或者洗衣机的外桶上安装有第二轴承；洗衣机的驱动轴穿过所述第二轴承和转子，端部支撑安装在第一轴承座内的第一轴承上。
  4. 根据权利要求2或3所述洗衣机用电机，其特征在于，所述壳体还包括第二壳体，第一壳体和第二壳体扣合固定在内部形成用于安装所述定子和转子的安装腔，所述第一壳体上设有所述第一轴承座，所述第二壳体上对应设有第二轴承座，第二轴承座内安装有第二轴承，洗衣机的驱动轴依次穿过第二轴承和转子，端部支撑安装在所述第一轴承上。
  5. 根据权利要求4所述一种洗衣机用驱动装置，其特征在于，所述第二壳体具有凹腔，所述第一壳体为板状结构，所述第一壳体覆盖安装在第二壳体的凹腔的开口上并与第一壳体固定连接，所述的转子和定子均容纳在所述的凹腔内，定子与所述的第一壳体固定连接。
  6. 根据权利要求4或5所述一种洗衣机用驱动装置，其特征在于，所述第二壳体上的第二轴承座上安装有油封；
    优选的，所述第二轴承座向外桶一侧延伸设置有环形凸台，所述油封包括环形本体，所述环状本体安装在所述环形凸台上。
  7. 根据权利要求1-6任一所述洗衣机用电机，其特征在于，所述转子包括有限位部，所述限位部限位在所述第二轴承或第二轴承座上，第二轴承或第二轴承座限制转子在径向上的活动。
  8. 根据权利要求7所述一种洗衣机用驱动装置，其特征在于，所述转子包括与所述第一轴承、第二轴承同轴设置且内部具有安装孔的空心轴体，所述限位部包括空心轴体开口端向第二轴承内环伸出的限位凸部，所述限位凸部与第二轴承的内圈内壁接触配合。
  9. 根据权利要求7或8所述一种洗衣机用驱动装置，其特征在于，所述安装孔内壁设有沿轴心方向排布内花键，所述驱动轴上对应设置有外花键，所述限位部为所述内花键的齿端沿轴线向外桶一侧延伸形成的限位凸部，所述限位凸部延伸至第二轴承的内圈并与所述内圈 的内表面接触配合，第二轴承限制转子在径向上的晃动。
  10. 根据权利要求9所述一种洗衣机用驱动装置，其特征在于，所述第一轴承的内圈直径小于第二轴承的内圈直径，所述驱动轴包括与第一轴承过盈配合的第一轴段和与第二轴承过盈配合的第二轴段，所述第一轴段穿过所述第二轴承和安装孔支撑安装在所述第一轴承上。
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