WO2011076026A1 - Pretightening force system on motor rotating shaft and motor using same - Google Patents

Pretightening force system on motor rotating shaft and motor using same 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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Prior art keywords
rotating shaft
motor
gasket
elastic member
shaft
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PCT/CN2010/077240
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French (fr)
Chinese (zh)
Inventor
卢平
张淼
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中山大洋电机制造有限公司
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Publication of WO2011076026A1 publication Critical patent/WO2011076026A1/en

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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.

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

Abstract

A pretightening force system on a motor rotating shaft (4) and a motor using the same are provided. The pretightening force system comprises a retaining ring (11), a left shim (12), an elastic elment (13) and a right shim (14). The retaining ring (11) is mounted on the rotating shaft (4) and is axially positioned. A side of the retaining ring (11) is provided with the left shim (12), the elastic elment (13) and the right shim (14) all sheathed on the rotating shaft (4) in sequence. The elastic element (13) is clamped between the left shim (12) and the right shim (14). The elastic element (13) is deformed due to bearing a pressure from an external motor element when the motor is assembled, thus assembling gaps are eliminated. After the pretightening force system is arranged, the assembling gaps on the motor rotating shaft (4) are eliminated, and axial float of the rotating shaft (4) is effectively avoided, and accurate positioning of a centrifugal starter (16) is ensured, and startup operation performance of the motor is improved.

Description

一种电机转轴上的预紧力系统及其应用的电动机 技术领域：  Preloading system on motor shaft and motor for application thereof
本实用新型涉及一种电机转轴上的预紧力系统及其应用的电动机， 它们 广泛应用于洗衣机、 千衣机中。  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.
背景技术： Background technique:
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。  At present, most washing machines and dryers have various components installed inside and on the rotating shaft. Since these components themselves have certain dimensional tolerances, after assembling the front and rear covers of the motor and the stator and rotor components, the components are There will be accumulated errors between them, and there is a large installation gap, which causes the motor shaft to move axially, which makes the positioning of the centrifugal switch inaccurate, and ultimately affects the starting performance of the motor.
发明内容： Summary of the invention:
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系统。 本实用新型的目的是通过以下的技术方案予以实现的。  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.
一种电机转轴上的预紧力系统， 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。  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.
上述所述的弹性件为波形垫圏。  The elastic member described above is a corrugated pad.
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。  The external motor component described above is the bearing chamber end face on the bearing or end cap.
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。  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.
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 上安装有预紧力系统， 该预紧力系统包括挡圏、 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。 The object of the present invention is achieved by the following technical solutions. 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,圏 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.
上述所述的弹性件为波形垫圏。  The elastic member described above is a corrugated pad.
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。  The external motor component described above is the bearing chamber end face on the bearing or end cap.
上述所述的锁紧装置采用螺钉和螺母组合连接结构。  The locking device described above adopts a screw and nut combination connection structure.
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。  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.
上述所述的挡圏与左垫片之间还设置有尼龙垫圏。  A nylon pad is also disposed between the damper and the left gasket described above.
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， 在预紧力系统的作用下， 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。  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) 釆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. .
附图说明： BRIEF DESCRIPTION OF THE DRAWINGS:
图 1 是本实用新型的电动机结构立体图。  1 is a perspective view showing the structure of a motor of the present invention.
图 2 是图 1的半剖图。  Figure 2 is a half cross-sectional view of Figure 1.
图 3 是图 2的正面示意图。  Figure 3 is a front elevational view of Figure 2.
图 4 是图 3中 A-A的放大图。  Figure 4 is an enlarged view of A-A in Figure 3.
具体实施方式： Detailed ways:
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 系统， 如图 4所示， 该预紧力系统包括挡圏 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。 The present invention will be further described in detail below through the specific embodiments and the accompanying drawings. As shown in FIG. 1, FIG. 2 and FIG. 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. As shown in FIG. 4, 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.
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。  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.
本实用新型通过在电机转轴上设置专门的预紧力系统， 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。  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.

Claims

权 利 要 求 Rights request
1. 一种电机转轴上的预紧力系统， 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。A preloading system on a motor shaft, characterized in that it comprises a damper, a left gasket, an elastic member and a right gasket, the damper being axially positioned on the rotating shaft, on the side of the damper The left gasket, the elastic member and the right gasket are sequentially fitted over the rotating shaft, and the elastic member is sandwiched between the left gasket and the right gasket.
2. 根据权利要求 1所述的一种电机转轴上的预紧力系统， 其特征在于： 弹 性件为波形垫圏。 2. The preloading system on a motor shaft according to claim 1, wherein: the elastic member is a wave pad.
3. 根据权利要求 1所述的一种电机转轴上的预紧力系统， 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。  3. A preloading system on a motor shaft according to claim 1, wherein: the outer motor member is a bearing chamber end face on the bearing or end cap.
4. 一种应用了权利要求 1 所述预紧力系统的电动机， 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系统， 其 特征在于： 该预紧力系统包括挡圏、 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。  4. An electric motor to which the pretensioning system according to claim 1 is applied, comprising a stator core, a winding, a rotor, a rotating shaft, a bearing, a front end cover and a rear end cover, a stator core and a front end cover and a rear end cover The rotor is mounted on the rotating shaft, and the two ends of the rotating shaft are supported on the bearings of the front and rear end covers. On the inner side of the at least one bearing and the rotating shaft, a preloading system is mounted, which is characterized in that: The force system includes a damper, a left gasket, an elastic member and a right gasket. The damper is axially positioned on the rotating shaft, and the left gasket, the elastic member and the right gasket are sequentially sleeved on the rotating shaft on the side of the damper. The elastic member is sandwiched between the left gasket and the right gasket, and is deformed by the pressure from the external motor member when the motor is assembled, thereby eliminating the installation gap.
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。 5. An electric motor according to claim 4, wherein: the elastic member is a wave pad.
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。 6. An electric motor according to claim 4 or 5, wherein: the outer motor member is a shaft or an end face of the shaft on the end cap.
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。  7. An electric motor according to claim 6, wherein: the locking device is a combination of a screw and a nut.
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。  8. An electric motor according to claim 4, wherein the dam is fixed in the annular groove on the rotating shaft, and a centrifugal switch is arranged on the inner side of the dam and on the rotating shaft.
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。  9. An electric motor according to claim 8, wherein a nylon pad is further disposed between the dam and the left shim.
PCT/CN2010/077240 2009-12-25 2010-09-23 Pretightening force system on motor rotating shaft and motor using same WO2011076026A1 (en)

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CN2009202958715U CN201674313U (en) 2009-12-25 2009-12-25 Pretightening force system on electric motor rotating shaft and electric motor adopting the same
CN200920295871.5 2009-12-25

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WO2016000123A1 (en) * 2014-06-30 2016-01-07 深圳市大疆创新科技有限公司 Cradle head electromotor and cradle head
CN105262268B (en) * 2015-11-24 2018-07-06 广东威灵电机制造有限公司 Rotor assembly and oiliness bearing motor
CN108900041A (en) * 2018-08-30 2018-11-27 上海特波电机有限公司 The variable gap device of AC Motor Control centrifugal switch
CN112886753A (en) * 2020-12-31 2021-06-01 日电产伺服电机（常州）有限公司 Motor for massage equipment or rocking chair

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DE3524360A1 (en) * 1984-08-07 1986-02-20 VEB Kombinat Robotron, DDR 8010 Dresden Silenced mounting of the shaft in stepper motors
JP2001295837A (en) * 2000-04-12 2001-10-26 Nsk Ltd Bearing device
CN201022164Y (en) * 2007-02-15 2008-02-13 上海南洋电机有限公司 A bearing room of wind generator electromotor with wave spring
CN201038892Y (en) * 2007-04-13 2008-03-19 许晓华 Rotor and end cover assembly structure with automatically-adjusted axial clearance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524360A1 (en) * 1984-08-07 1986-02-20 VEB Kombinat Robotron, DDR 8010 Dresden Silenced mounting of the shaft in stepper motors
JP2001295837A (en) * 2000-04-12 2001-10-26 Nsk Ltd Bearing device
CN201022164Y (en) * 2007-02-15 2008-02-13 上海南洋电机有限公司 A bearing room of wind generator electromotor with wave spring
CN201038892Y (en) * 2007-04-13 2008-03-19 许晓华 Rotor and end cover assembly structure with automatically-adjusted axial clearance

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