Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K1/00—Details of the magnetic circuit
  • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
  • H02K1/12—Stationary parts of the magnetic circuit
  • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
  • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
• • 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
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
  • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
  • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
  • F16D1/0829—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve
  • F16D1/0835—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve due to the elasticity of the ring or sleeve
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • H02K15/16—Centering rotors within the stator; Balancing rotors
• • 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
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K9/00—Arrangements for cooling or ventilating
  • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
  • H02K9/223—Heat bridges

Definitions

• the invention relates to a centering and fixing ring for an electric motor for centering and fixing the motor in a housing according to the preamble of claim 1
• the object of the invention is therefore to show a way with which a flexible and low-cost fixation and centering of the motor in a housing is feasible.
• a centering and fixing ring of the type mentioned which is further characterized in that the ring has a plurality of spring elements which are arranged on a belt and in the installed state of the motor in the housing each exert a substantially radially aligned pressure to fix the motor in the housing radially and axially.
• the invention is based on the basic idea that by means of the ring according to the invention, in particular the spring elements, an axial and radial fixation of the motor in a housing is possible.
• the radial pressure exerted by the spring elements causes the motor to be centered relative to the housing becomes.
• this pressure is also designed so high that an adhesive and frictional force between the ring and the housing is constructed, so that the engine is also held in the axial direction in its intended position in the context of operating loads.
• the ring is firmly attached to the engine.
• the centering of the motor is achieved relative to the housing.
• each spring element is formed by means of a formed in the band and protruding from the belt survey.
• the elevations are each preferably aligned in a direction away from the engine ⁇ pointing radial direction. In this way, the spring elements are particularly cost-effective and with little effort reali ⁇ sierbar.
• the survey is designed such that a portion of the survey in the installed state is plastically deformable, for example. After initial plastic deformation during engine mounting, and another area in the installed state is elastically deformable, eg. due to fluctuating Be ⁇ operating conditions.
• the elevation is such ge ⁇ staltet that it comprises a deforming plastically section, a plastically and elastically deforming portion, and a elastically deforming portion in the installed state.
• the surveys are formed like a frog or designed in such a way that they in principle like a Knackfrosch respond to an external pressure load.
• the embossing causes the elevations undergo an elastic deformation in the installed state of the engine and then the pressure is generated against the wall of the housing. Thanks to the embossing, this pressure is maintained over a longer period of time so that the motor remains fixed and centered over the operating time.
• the survey is designed so that despite the plastic deformation remains a residual capacity within which the survey is elastically deformable to compensate in a given workspace a game eg. Between a motor and a housing can.
• the survey is rectangular and has an elastically deformable central region in the middle of the survey.
• the middle region is surrounded by a plurality of flanks, wherein the flanks are arranged at an angle to the strip so that the flanks substantially maintain their original shape with a radially acting force.
• the transition from the flanks to the band is formed by a rounding.
• the band of the ring is formed by the meter.
• the invention further comprises according to a second aspect an electric motor with a ring according to one of the preceding embodiments.
• FIG. 1b shows an enlarged detail from FIG. 1,
• Figure 2 is a perspective view of a motor with the ring and a housing
• Figure 3 is a sectional view of the engine in a built-in
• FIG. 4 shows an enlarged view of the region A from FIG. 3.
• FIG. 1 shows an embodiment of the centering and fixing ring 1 according to the invention (hereinafter referred to simply as a ring).
• the ring 2 is formed from a band 2 on which a plurality of spring elements 3 are formed.
• the band can be manufactured in ⁇ example of a metal.
• the spring elements 3 are formed in this embodiment as elevations 3 in the band 2 or incorporated into the band. In the original form, the band must have no ring shape, but may have a flat straight shape.
• the band 2 is applied around the outer surface of the motor 5 and formed into a ring 1.
• the elevations 3 are arranged at uniform intervals along the belt 2 and have a substantially rectangular basic shape.
• the survey 3 is designed such that a portion of the survey 3 is plastically deformed in the installed state and another area is deformed elastically in the installed state.
• the edge 30 of the elevations 3 is rounded and forms the transition from the surface of the belt 2 to a plurality of flanks 31, which is divided into different sections in the drawing, s. Figure lb. Starting from the edge 30, the flanks 31 are arranged, which are angled towards the surface of the belt 2 radially outward or from the engine pioneering. The flanks 31 surround a central region 32 of the elevation 3, which is provided for exerting the spring action.
• This middle region 32 is shown in FIG. 1a or FIG. 1b as being in an egg-shaped region, but may be formed in a different shape. It is divided into three sections 32a, 32b.
• the central portion 32a is strip-shaped and bulges toward the center of the strip upwardly away from the belt. In this way, this section 32a forms the highest point of the elevation 3.
• two further sections 32b are mounted, which are approximately trapezoidal and form the transition to the flanks 31 on the long sides of the central area.
• the survey 3 is made possible due to the geometry and preferably also by appropriate thermal treatment or embossing of the material, that the central region 32 is always braced and exerts a force radially outwards. In this way, the ring exerts a radial pressure to the housing in the installed state of the engine.
• the flanks 31 are for Band surface such an angle, so that they do not deform substantially despite the radial pressure and thus support the central region 32.
• the survey is such ⁇ laid that in the installed state, such as. Described in Figure 2, the central portion 32a is plastically deformed.
• the sections 32b are deformed partly plastically and partly elastically.
• the flanks 31 are not plastically deformed, but elastically deformed depending on the operating state.
• the contact pressure between the motor and housing can be kept upright in this way.
• a game 72 between motor 5 and housing 7 is bridged.
• changes in the clearance between the motor 5 and the housing 7 due to temperature ⁇ fluctuations are compensated.
• the temperature fluctuations can range between -50 ° C and + 130 ° C.
• FIG. 2 shows an exploded view of an electric motor 5 with the ring before installation in a housing 7.
• the engine 5 has a substantially cylindrical construction. It comprises a rotor 50 and a stator 51 (see Figure 3), wherein the ring 1 is fixed to an outer surface of the stator 51.
• the attachment of the ring 1 to the engine can be done in many ways.
• the housing 7 is constructed in two parts, which is not absolutely necessary.
• the first part of the housing 7, which has a rectangular structure, is provided for receiving a control ⁇ device, which is also connected to the motor.
• On the first part sits a cylindrical second part of the housing 7 with a recess 71, in which the motor 5 is inserted.
• the recess 71 can be covered with a lid or the like from ⁇ and closed. ⁇
• the diameter of the motor 5 is dimensioned such that it fits into a recess 71 of the housing 72, wherein the diameter 73 of the recess is largely designed so that the play 72 between the motor 5 and the housing 7 is formed.
• the game 72 is necessary to allow easy installation of the engine in the housing. For use in operation, however, it must be ensured that the motor 5 is firmly seated within the housing 7, i. is not displaceable in the radial and in the axial direction under the action of the operating loads.
• FIGS. 3 and 4 show a sectional view of the installed motor 5 in the housing 7, FIG. 4 showing an enlarged view of the area A.
• FIG. 3 shows a sectional view of the installed motor 5 in the housing 7, FIG. 4 showing an enlarged view of the area A.
• the ring 1 fills the clearance between the motor 5 and the housing 7 under an elastic and plastic deformation of the middle area 32 and thus a radial pressure or a contact pressure on the housing 7 or the engine 5 exerts.
• This pressure is dimensioned or designed such that the motor 5 sits firmly within the housing 7 both in the radial direction and in the axial direction.
• the elevation 3 or the middle region 32 thus flattens due to the deformation and forms a contact surface with the inner wall of the housing 7.
• the flanks 31 retain their original shape and are optionally elastically deformed.
• the contact area formed by the deformation of the central region 32 is also so large that sufficient friction between the ring 1 and the housing 7 is built up, which allows axial mounting of the motor 5.
• An advantage of the use of the ring 1 is also that a thermal contact between the housing 7 and the stator 51 of the motor 5 is achieved, and thus a heat transfer from the motor 5 to the housing 7 is possible.
• the motor 5 rests on the bottom 70 of the housing to achieve a second axial bearing of the motor 5 within the housing 7.

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

Applications Claiming Priority (2)

Publications (1)

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ID=55027729

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Family Cites Families (11)

• 2015
  • 2015-01-06 DE DE102015200040.0A patent/DE102015200040A1/de not_active Withdrawn
  • 2015-12-17 CN CN201580072457.6A patent/CN107112825A/zh active Pending
  • 2015-12-17 WO PCT/EP2015/080268 patent/WO2016110391A1/de active Application Filing
  • 2015-12-17 EP EP15817228.8A patent/EP3243262A1/de not_active Withdrawn

Non-Patent Citations (2)

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