WO2009079935A1 - Moteur - Google Patents

Moteur Download PDF

Info

Publication number
WO2009079935A1
WO2009079935A1 PCT/CN2008/071319 CN2008071319W WO2009079935A1 WO 2009079935 A1 WO2009079935 A1 WO 2009079935A1 CN 2008071319 W CN2008071319 W CN 2008071319W WO 2009079935 A1 WO2009079935 A1 WO 2009079935A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
oil
bearing
rotating shaft
fixing member
Prior art date
Application number
PCT/CN2008/071319
Other languages
English (en)
Chinese (zh)
Inventor
Chengfang Xiao
Bing Zhou
Min Li
Original Assignee
Shanghai Moons' Electric Co., Ltd
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 Shanghai Moons' Electric Co., Ltd filed Critical Shanghai Moons' Electric Co., Ltd
Publication of WO2009079935A1 publication Critical patent/WO2009079935A1/fr

Links

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
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing

Definitions

  • the utility model relates to a motor, in particular, the motor comprises a motor casing and an oil-impregnated bearing for setting a rotating shaft of the motor to the motor casing.
  • the fixing method of the oil-impregnated bearing of the known motor is as follows:
  • the oil-impregnated bearing 1 of the motor shown in Fig. 1 is designed to be of the " ⁇ " type and is fixed to the motor casing or panel 3 by riveting.
  • the main disadvantage is that the oil-impregnated bearing 1 has a complicated shape and low oil content; most of the volume is exposed to the air, the oil immersion is easy to volatilize, the surface of the bearing 1 is apt to rust, affecting the life and appearance of the motor; the combination of the panel and the motor casing 3 is easy to accumulate.
  • the tolerance affects the concentricity of the bearing 1.
  • the motor casing or panel is designed as a octopus structure 2, and the cylindrical oil-impregnated bearing 4 is tightly fitted and pressed into the octopus structure 2 to be fixed.
  • the disadvantage is that the oil-bearing bearing 4 is exposed to the air, the oil immersion is easy to volatilize, the surface of the bearing 4 is apt to rust, affecting the life and appearance of the motor; the bearing 4 is easily displaced during the motor impact test.
  • the motor rotor and the shaft core are commonly used in the form of stamped iron sheets and powder sintered bodies. Since the stamped iron sheets are considered in terms of cost and material, the thickness is often thin, resulting in a small bonding force between the shaft core and the rotor. When the motor is subjected to axial impact, the shaft core is easily displaced; the powder sintered body is cheap and has good bonding force, but the moment of inertia is large, and the motor step angle error is increased. Summary of the invention
  • the technical problem to be solved by the utility model is to improve the fixing structure of the oil bearing of the motor to extend the life of the motor and simplify the manufacturing process.
  • the motor of the present invention includes a motor casing, an oil bearing, a rotor, a stator, a rotating shaft, and a fixing member of the rotor and the rotating shaft, wherein the oil bearing is used to set a rotating shaft of the motor to the motor casing,
  • the motor casing has a convex hull, the convex hull has a small hole, the oil bearing is disposed in the convex hull, and the rotating shaft can protrude from the small hole.
  • the fixing member is a fixing member stretched from a thin iron piece, the fixing member has a first fixing portion and a second fixing portion extending in the axial direction, the rotor and the fixing The first fixing portion of the piece is tightly fitted, and the rotating shaft and the second fixing portion of the fixing member are tightly engaged, so that the rotor and the rotating shaft are relatively fixed by the fixing member. Due to the use of the fixing member, the fixing strength of the rotating shaft and the rotor is increased, but the cost and the moment of inertia are rarely increased.
  • FIG. 1 is a schematic view showing the assembly of a ⁇ type oil bearing in a conventional motor
  • FIG. 2 is a schematic view showing the assembly of an oil bearing of a octopus structure in a conventional motor
  • Figure 3 is a schematic view of the assembly of the motor of the present invention.
  • Figure 4 is a schematic view of the fixing member for the rotor shaft connection of the present invention.
  • Figure 5 is a schematic view showing the assembly of the rotor shaft of the present invention.
  • the motor housing 10 is formed with a positioning convex cover 20, and a small hole 201 is disposed in the middle of the positioning convex package 20 for positioning the motor shaft 50 (shown in FIG. 5).
  • the oil-impregnated bearing 30 is tightly fitted into the positioning convex hull 20.
  • the motor casing 10 directly stretches out the positioning convex hull 20 in the center during stamping, and punches a small hole out of the shaft in the middle of the positioning convex hull 20, and presses the oil bearing 30 tightly into the convex hull when assembled. Inside.
  • the motor described above has such a feature that the oil-impregnated bearing 30 is located in an almost completely enclosed space, that is, the circumference and the upper end surface of the oil-impregnated bearing 30 are surrounded by the positioning convex hull 20 and the inner hole is slightly clearance-fitted with the rotating shaft 50, only The lower end surface is exposed in the space enclosed by the stator 70 and the outer casing 10, and the area of the oil immersion volatilization is greatly reduced, forming an oil retaining mechanism, prolonging the bearing life and prolonging the service life of the motor; in addition, the oil bearing 30 can be simplified to be easy to produce.
  • Cylindrical, simple to machine and oil-bearing rate is significantly higher than "T" type oil-impregnated bearing, which increases the bearing life and reduces the cost of oil-bearing bearings. Furthermore, the oil-impregnated bearing 30 is almost completely wrapped inside the motor housing 10, which rusts.
  • the motor stator 60 and the connecting fixing member 40 of the rotating shaft 50 are formed by stretching a thin iron piece, and the fixing member 40 has a first fixing portion 401 in the axial direction and The second fixing portion 402 in the axial direction, the first fixing portion 401 and the rotor 60 are tightly fitted, and the second fixing portion 402 and the rotating shaft 50 are tightly fitted, so that the rotor 60 and the rotating shaft 50 are relatively fixed due to the first fixing portion 401 and the second portion.
  • the fixing portion 402 is elongated in the axial direction, and has a fixed length with respect to the existing fixing member, so that the contact area between the rotor 60 and the rotating shaft 50 and the fixing member 40 is greatly increased, and the fixing strength is increased, but the cost and the moment of inertia are increased. less.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention porte sur un moteur comportant un carter (10), un palier autolubrifiant (30), un rotor, un stator, un arbre tournant monté dans le carter (10) sur le palier autolubrifiant (30), et une monture, solidaire du rotor et de l'arbre tournant. Le carter (10) présente une partie en saillie percée d'une ouverture où se loge le palier autolubrifiant (30) lequel est traversé par l'arbre tournant. Cette disposition empêche les fuites d'huile, réduit fortement la zone de volatilisation d'huile du palier autolubrifiant (30), et prolonge la durée de vie du moteur.
PCT/CN2008/071319 2007-12-18 2008-06-16 Moteur WO2009079935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720199369.5 2007-12-18
CNU2007201993695U CN201163736Y (zh) 2007-12-18 2007-12-18 马达

Publications (1)

Publication Number Publication Date
WO2009079935A1 true WO2009079935A1 (fr) 2009-07-02

Family

ID=40184663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/071319 WO2009079935A1 (fr) 2007-12-18 2008-06-16 Moteur

Country Status (2)

Country Link
CN (1) CN201163736Y (fr)
WO (1) WO2009079935A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2129047Y (zh) * 1991-05-30 1993-03-31 马渊马达株式会社 小型电动机
CN1134057A (zh) * 1995-01-31 1996-10-23 索尼公司 电动机
CN2469609Y (zh) * 2001-03-24 2002-01-02 林也华 小型直流永磁电动机
CN2870279Y (zh) * 2005-11-05 2007-02-14 中山大洋电机股份有限公司 一种电机的含油轴承结构
US20070114865A1 (en) * 2005-11-23 2007-05-24 Daewood Electronics Corporation Oilless bearing type motor with function of preventing oil leakage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2129047Y (zh) * 1991-05-30 1993-03-31 马渊马达株式会社 小型电动机
CN1134057A (zh) * 1995-01-31 1996-10-23 索尼公司 电动机
CN2469609Y (zh) * 2001-03-24 2002-01-02 林也华 小型直流永磁电动机
CN2870279Y (zh) * 2005-11-05 2007-02-14 中山大洋电机股份有限公司 一种电机的含油轴承结构
US20070114865A1 (en) * 2005-11-23 2007-05-24 Daewood Electronics Corporation Oilless bearing type motor with function of preventing oil leakage

Also Published As

Publication number Publication date
CN201163736Y (zh) 2008-12-10

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