WO2011076026A1 - 一种电机转轴上的预紧力***及其应用的电动机 - Google Patents

一种电机转轴上的预紧力***及其应用的电动机 Download PDF

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Publication number
WO2011076026A1
WO2011076026A1 PCT/CN2010/077240 CN2010077240W WO2011076026A1 WO 2011076026 A1 WO2011076026 A1 WO 2011076026A1 CN 2010077240 W CN2010077240 W CN 2010077240W WO 2011076026 A1 WO2011076026 A1 WO 2011076026A1
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WO
WIPO (PCT)
Prior art keywords
rotating shaft
motor
gasket
elastic member
shaft
Prior art date
Application number
PCT/CN2010/077240
Other languages
English (en)
French (fr)
Inventor
卢平
张淼
Original Assignee
中山大洋电机制造有限公司
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 中山大洋电机制造有限公司 filed Critical 中山大洋电机制造有限公司
Publication of WO2011076026A1 publication Critical patent/WO2011076026A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor

Definitions

  • the utility model relates to a pre-tightening system on a rotating shaft of a motor and an electric motor applied thereto, which are widely used in a washing machine and a thousand clothes machine.
  • the object of the present invention is to provide a pre-tightening system which is simple in structure, low in cost, and can effectively eliminate the installation gap existing on the motor shaft.
  • the object of the present invention is achieved by the following technical solutions.
  • a pre-tightening system on a motor shaft comprising a damper, a left gasket, an elastic member and a right gasket, wherein the damper is axially positioned on the rotating shaft, and the left side of the damper is sequentially placed on the rotating shaft
  • the gasket, the elastic member and the right gasket are sandwiched between the left gasket and the right gasket, and are deformed by the pressure from the external motor member when the motor is assembled, thereby eliminating the installation gap.
  • the elastic member described above is a corrugated pad.
  • the external motor component described above is the bearing chamber end face on the bearing or end cap.
  • Another object of the present invention is to provide a motor that is compact in construction and that can effectively eliminate the mounting clearances present on the motor shaft.
  • An electric motor comprising a stator core, a winding, a rotor, a rotating shaft, a bearing, a front end cover and a rear end cover, wherein the stator core is connected with the front end cover and the rear end cover by a locking device, and the rotor is mounted on the rotating shaft, the rotating shaft
  • the two ends are supported on the bearings of the front and rear end covers, and a pre-tightening system is installed on the inner side of the at least one bearing and the rotating shaft, the pre-tightening system includes a damper, a left washer, an elastic member and a right washer, ⁇ mounted on the shaft is axially positioned, on the side of the dam is the left gasket, the elastic member and the right gasket which are sequentially placed on the shaft, and the elastic member is sandwiched between the left gasket and the right gasket.
  • the pressure from the external motor component is deformed during assembly to eliminate the mounting clearance.
  • the elastic member described above is a corrugated pad.
  • the external motor component described above is the bearing chamber end face on the bearing or end cap.
  • the locking device described above adopts a screw and nut combination connection structure.
  • the damper described above is fixed in an annular groove on the rotating shaft, and a centrifugal switch is mounted on the inner side of the dam and on the rotating shaft.
  • a nylon pad is also disposed between the damper and the left gasket described above.
  • the utility model has the following advantages: 1) By setting a special pre-tightening system on the motor shaft, the positioning of each component on the motor shaft is accurate, that is, the rotor mounted on the motor shaft, centrifugally The position of the switch and the like is fixed relative to the stator and the end cover, eliminating the installation clearance on the motor shaft, effectively preventing the rotation of the shaft along the axial direction, ensuring accurate positioning of the centrifugal switch, and improving the starting performance of the motor; 2) ⁇ The combination of the screw and the nut is used to connect the front and rear end caps of the motor to the stator core. Under the action of the preloading system, the cumulative tolerance of the machining between the parts is effectively compensated, which makes the assembly convenient and fast, and the assembly process is completed. .
  • FIG. 1 is a perspective view showing the structure of a motor of the present invention.
  • Figure 2 is a half cross-sectional view of Figure 1.
  • Figure 3 is a front elevational view of Figure 2.
  • Figure 4 is an enlarged view of A-A in Figure 3.
  • an electric motor includes a stator core 1, a winding 2, a rotor 3, a rotating shaft 4, a bearing 5, a front end cover 6, and a rear end cover 7, and a stator core 1 and
  • the front end cover 6 and the rear end cover are connected together by a locking device, and the rotor 3 is mounted on the rotating shaft 4, and the two ends 7 of the rotating shaft 4 are on the front and rear end bearing 5, on the inner side of at least one bearing 5, and the rotating shaft 4
  • a pre-tightening system is mounted thereon.
  • the pre-tightening system includes a damper 1 1 , a left shim 12 , an elastic member 13 and a right shim 14 .
  • the retaining ring 1 1 is mounted on the rotating shaft 4
  • the axial positioning is on the side of the dam 1 1 the left gasket 12, the elastic member 13 and the right gasket 14 which are sequentially sleeved on the rotating shaft 4, and the elastic member 13 is sandwiched between the left gasket 12 and the right gasket 14 During the assembly of the motor, the pressure from the external motor member is deformed, thereby eliminating the installation gap.
  • the elastic member 13 is a corrugated pad; the outer motor member is a bearing chamber end surface of the bearing 5 or the end cover; the locking device is combined with the screw 8 and the nut 9; the ring 11 is fixed on the rotating shaft 4 Inside the recess 10, a centrifugal switch 16 is mounted on the inner side of the dam 11 and on the rotating shaft 4; a nylon pad 15 is further disposed between the damper 11 and the left shim 12.
  • the utility model eliminates the installation gap between the components on the motor shaft by setting a special pre-tightening system on the motor shaft, thereby effectively preventing the rotation of the shaft along the axial direction, ensuring accurate positioning of the centrifugal switch and improving the motor.
  • the startup run performance eliminates the installation gap between the components on the motor shaft by setting a special pre-tightening system on the motor shaft, thereby effectively preventing the rotation of the shaft along the axial direction, ensuring accurate positioning of the centrifugal switch and improving the motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Description

一种电机转轴上的预紧力***及其应用的电动机 技术领域：
本实用新型涉及一种电机转轴上的预紧力***及其应用的电动机， 它们 广泛应用于洗衣机、 千衣机中。
背景技术：
目前， 绝大多数洗衣机、干衣机电动机内部、转轴上安装有各种零部件， 由于这些零部件自身都会存在一定的尺寸公差， 在装配完电机前后端盖和定 子、 转子組件之后， 零部件间会产生累积误差， 存在较大的安装间隙， 导致 电机转轴沿轴向窜动， 使离心开关定位不精确， 最终会影响电动机的启动运 行性能。
发明内容：
本实用新型的目的是提供一种结构简单， 成本较低， 能有效消除电机转 轴上存在的安装间隙的预紧力***。 本实用新型的目的是通过以下的技术方案予以实现的。
一种电机转轴上的预紧力***， 包括挡圏、 左垫片、 弹性件和右垫片， 挡圏安装在转轴上被轴向定位， 在挡圏一侧是依次套在转轴上的左垫片、 弹 性件和右垫片， 弹性件被夹在左垫片和右垫片之间， 在电机组装时承受来自 外部电机构件的压力发生变形， 从而消除安装间隙。
上述所述的弹性件为波形垫圏。
上述所述的外部电机构件是轴承或者端盖上的轴承室端面。
本实用新型的另一目的是提供一种结构紧凑、 能有效消除电机转轴上存 在的安装间隙的电动机。
本实用新型的目的是通过以下的技术方案予以实现的。 一种电动机， 包括定子铁芯、 线圏绕组、 转子、 转轴、 轴承、 前端盖和 后端盖， 定子铁芯与前端盖和后端盖通过锁紧装置连接一起， 转子安装在转 轴上， 转轴两端支承在前、 后端盖的轴承上， 在至少一个轴承的内侧、 转轴 上安装有预紧力***， 该预紧力***包括挡圏、 左垫片、 弹性件和右垫片， 挡圏安装在转轴上被轴向定位， 在挡圏一侧是依次套在转轴上的左垫片、 弹 性件和右垫片， 弹性件被夹在左垫片和右垫片之间， 在电机组装时承受来自 外部电机构件的压力发生变形， 从而消除安装间隙。
上述所述的弹性件为波形垫圏。
上述所述的外部电机构件是轴承或者端盖上的轴承室端面。
上述所述的锁紧装置采用螺钉和螺母组合连接结构。
上述所述的挡圏被固定在转轴上的环形 槽里面， 在挡圏的内侧、 转轴 上装设有离心开关。
上述所述的挡圏与左垫片之间还设置有尼龙垫圏。
本实用新型的有益效杲是： 1 )通过在电机转轴上设置专门的预紧力系 统， 使电机转轴上的各零部件间定位准确， 也就是说， 使安装在电机转轴上 的转子、 离心开关等部件相对于定子和端盖的位置固定， 消除了电机转轴上 的安装间隙， 有效防止了转轴沿轴向窜动， 确保了离心开关定位精确， 提高 了电动机的启动运行性能； 2 ) 釆用螺钉和螺母组合结构， 将电机前后端盖 和定子铁芯连接在一起， 在预紧力***的作用下， 有效补偿了零部件间加工 的累积公差， 使装配方便快速， 筒化了装配工艺。
附图说明：
图 1 是本实用新型的电动机结构立体图。
图 2 是图 1的半剖图。
图 3 是图 2的正面示意图。
图 4 是图 3中 A-A的放大图。
具体实施方式：
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。 如图 1、 图 2、 图 3所示， 一种电动机， 包括定子铁芯 1、 线圏绕组 2、 转子 3、 转轴 4、 轴承 5、 前端盖 6和后端盖 7， 定子铁芯 1与前端盖 6和后 端盖 Ί通过锁紧装置连接一起， 转子 3安装在转轴 4上， 转轴 4两端支 7 在 前、 后端盖的轴承 5上， 在至少一个轴承 5的内侧、 转轴 4上安装有预紧力 ***， 如图 4所示， 该预紧力***包括挡圏 1 1、 左垫片 12、 弹性件 1 3和右 垫片 14 ,挡圈 1 1安装在转轴 4上被轴向定位， 在挡圏 1 1一侧是依次套在转 轴 4上的左垫片 12、 弹性件 1 3和右垫片 14 , 弹性件 1 3被夹在左垫片 12和 右垫片 14之间， 在电机组装时承受来自外部电机构件的压力发生变形， 从 而消除安装间隙。
其中弹性件 1 3为波形垫圏； 外部电机构件是轴承 5或者端盖上的轴承 室端面； 锁紧装置釆用螺钉 8和螺母 9组合连接结构； 挡圏 11被固定在转 轴 4上的环形凹槽 10里面， 在挡圏 11的内侧、 转轴 4上装设离心开关 16 ; 挡圏 1 1与左垫片 12之间还设置有尼龙垫圏 15。
本实用新型通过在电机转轴上设置专门的预紧力***， 消除了电机转轴 上的各零部件间的安装间隙， 有效防止了转轴沿轴向窜动， 确保了离心开关 定位精确， 提高了电动机的启动运行性能。

Claims

权 利 要 求
1. 一种电机转轴上的预紧力***， 其特征在于： 它包括挡圏、 左垫片、 弹 性件和右垫片， 挡圏安装在转轴上被轴向定位， 在挡圏一侧是依次套在 转轴上的左垫片、 弹性件和右垫片， 弹性件被夹在左垫片和右垫片之间。
2. 根据权利要求 1所述的一种电机转轴上的预紧力***， 其特征在于： 弹 性件为波形垫圏。
3. 根据权利要求 1所述的一种电机转轴上的预紧力***， 其特征在于： 外 部电机构件是轴承或者端盖上的轴承室端面。
4. 一种应用了权利要求 1 所述预紧力***的电动机， 包括定子铁芯、 线圏 绕组、 转子、 转轴、 轴承、 前端盖和后端盖， 定子铁芯与前端盖和后端 盖通过锁紧装置连接一起， 转子安装在转轴上， 转轴两端支承在前、 后 端盖的轴承上， 在至少一个轴承的内侧、 转轴上安装有预紧力***， 其 特征在于： 该预紧力***包括挡圏、 左垫片、 弹性件和右垫片， 挡圏安 装在转轴上被轴向定位， 在挡圏一侧是依次套在转轴上的左垫片、 弹性 件和右垫片， 弹性件被夹在左垫片和右垫片之间， 在电机组装时承受来 自外部电机构件的压力发生变形， 从而消除安装间隙。
5. 根据权利要求 4所述的一种电动机， 其特征在于： 弹性件为波形垫圏。
6. 根据权利要求 4或 5所述的一种电动机， 其特征在于： 外部电机构件是 轴^^或者端盖上的轴^ ^室端面。
7. 根据权利要求 6所述的一种电动机， 其特征在于： 锁紧装置采用螺釘和 螺母组合连接结构。
8. 根据权利要求 4所述的一种电动机， 其特征在于： 挡圏被固定在转轴上 的环形凹槽里面， 在挡圏的内侧、 转轴上装设离心开关。
9. 根据权利要求 8所述的一种电动机， 其特征在于： 挡圏与左垫片之间还 设置有尼龙垫圏。
PCT/CN2010/077240 2009-12-25 2010-09-23 一种电机转轴上的预紧力***及其应用的电动机 WO2011076026A1 (zh)

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CN200920295871.5 2009-12-25
CN2009202958715U CN201674313U (zh) 2009-12-25 2009-12-25 一种电机转轴上的预紧力***及其应用的电动机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104756373B (zh) * 2014-06-30 2018-06-05 深圳市大疆灵眸科技有限公司 云台电机及云台
CN105262268B (zh) * 2015-11-24 2018-07-06 广东威灵电机制造有限公司 转子总成及含油轴承电机
CN108900041A (zh) * 2018-08-30 2018-11-27 上海特波电机有限公司 交流电机控制离心开关的可变间隙装置
CN112886753A (zh) * 2020-12-31 2021-06-01 日电产伺服电机（常州）有限公司 按摩设备或摇椅用电动机

Citations (4)

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DE3524360A1 (de) * 1984-08-07 1986-02-20 VEB Kombinat Robotron, DDR 8010 Dresden Geraeuschgedaempfte lagerung der welle in schrittmotoren
JP2001295837A (ja) * 2000-04-12 2001-10-26 Nsk Ltd 軸受装置
CN201022164Y (zh) * 2007-02-15 2008-02-13 上海南洋电机有限公司 一种设有波形弹簧的风力发电机电机的轴承室
CN201038892Y (zh) * 2007-04-13 2008-03-19 许晓华 自调整轴向间隙转子与端盖装配结构

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524360A1 (de) * 1984-08-07 1986-02-20 VEB Kombinat Robotron, DDR 8010 Dresden Geraeuschgedaempfte lagerung der welle in schrittmotoren
JP2001295837A (ja) * 2000-04-12 2001-10-26 Nsk Ltd 軸受装置
CN201022164Y (zh) * 2007-02-15 2008-02-13 上海南洋电机有限公司 一种设有波形弹簧的风力发电机电机的轴承室
CN201038892Y (zh) * 2007-04-13 2008-03-19 许晓华 自调整轴向间隙转子与端盖装配结构

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