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
  • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
  • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings 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
  • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
  • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
  • F16C35/042—Housings for rolling element bearings for rotary movement
  • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
• • 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
  • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
  • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
  • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
  • F16C35/067—Fixing them in a housing
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/02—Casings or enclosures characterised by the material thereof
• • 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
  • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
  • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
  • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
  • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

• the invention relates to an electric motor having a housing and a rotor which is mounted in the housing via a fixed / floating bearing, wherein a deep groove ball bearing with an inner ring and an outer ring is provided as a fixed bearing and the outer ring of the fixed bearing by means of a spring steel disc in the housing elastically clamped is.
• the shape of the spring steel disc according to the invention is known per se,
• the object of the invention is to define a deep groove ball bearings with simple means, with as few process steps and few components safely and permanently in a deep-drawn steel housing. This object is achieved by the features of claim 1.
• the housing is a deep-drawn steel housing (10) or a deep-drawn steel housing pot
• the spring steel disc (5) is hardened
• the hardness of the spring steel disc (5) is greater than the hardness of the deep-drawn steel housing (10)
• the spring steel disc (5 ) has the form of a clamping ring, which in the region radially outside the outer ring (9) has a
• the spring steel disc can (5) dig in a force against the joining direction in the deep-drawn steel housing (10) and find a secure fit.
• the outer ring (9) of the deep groove ball bearing (8) is mounted axially movable in the steel housing (10) and is held only by the spring steel disc (5).
• Zinc layer which is very thin after deep drawing, nevertheless causes the holding force of the spring steel disc (5) in the steel housing (10) to increase significantly.
• the steel housing (10) has a plurality of cascade-like recesses (1 1, 12, 13) and a first recess (1 1) is radially bounded by a first cylinder jacket (21) and for receiving the spring steel disc (5).
• This recess (1 1) is dimensioned in diameter so that it is sufficient for receiving the spring steel disc (5).
• the steel housing (10) has a second recess (12) defined radially by a second cylinder jacket (22) whose inside diameter is smaller than the inside diameter of the first recess (11) and in that the second recess (12 ) for receiving the deep groove ball bearing (8).
• the diameter of the second recess (12) differs from the diameter of the first recess (1 1) so that the spring arms (2) extend radially into the region of the second recess (12), so that the outer ring (9) of the deep groove ball bearing (8) by the spring arms (2) can be held in the axial direction.
• the steel housing (10) has a third recess (13), which is bounded radially by a third cylinder jacket (23) and whose inner diameter is smaller than the inner diameter of the second
• Cylinder shell (22) This recess (13) is designed so that a cap (1 6) is securely mounted.
• a cap (16) may be required if a housing opening is required to allow access for an assembly tool for pressing the inner ring onto a motor shaft.
• the outer ring (9) of the deep groove ball bearing (8) axially has a greater dimension than the depth of the second recess (12). Only then is a backlash-free recording of the outer ring (9) in the second recess (12) possible.
• the spring steel disc (5) rests in the mounted state in the axial direction on a stop (6).
• the axial position of the stop (6) is decisive for the bias with which the spring arms (2) act on the outer ring (9).
• the joining partner a definable force within calculable tolerance limits possible.
• the spring steel disc (5) has a cone-shaped clamping region (4), with which it claws in the mounted state on the inner wall of the first cylinder jacket (21) of the steel housing (10).
• the hold of the spring steel disc (5) in the steel housing (10) increases in a force against the joining direction due to geometric
• the deep groove ball bearing (8) is held exclusively by the frictional connection of the spring steel disc (5) with the steel housing (10) in order to meet the object of the invention.
• Another important advantage of the invention is that the deep groove ball bearing (8) by the spring arms (2) is elastically held. This allows Radial loads are cushioned without a permanent deformation occurs.
• unmounted state relative to the disk plane should be inclined by 25 ° to 35 ° that the clamping region (4) of the spring steel disc (5) should be inclined in the unassembled state relative to the disk plane by 35 ° to 45 ° and that the outer diameter of the clamping region (4) the spring steel disc (5) should be in the unmounted state 2% to 4% larger than the inner diameter of the first cylinder jacket (21) to effect an optimal holding force of the spring steel disc (5) and an optimal elastic support of the deep groove ball bearing (8).
• the invention also includes such housing, which has more than said number of recesses (1 1, 12, 13).
• first depression would mean the depression in which the spring steel disc (5) is received.
• FIG. 1 is a sectional view of a deep-drawn steel housing pot
• Fig. 3 is a partial sectional view of a built-in deep groove ball bearing
• Fig. 4 is an assembly drawing of an electric motor.
• a housing opening. 7 is for one Retainer of a press-in device frgespart.
• the first recess 1 1 is radially inwardly through a first cylinder shell 21, the second recess 12 through a second cylinder shell 22 and the third recess 13 through a third
• Fig. 2 shows the spring steel disc 5 in a plan view, a section and spatially.
• the spring steel disk 5 is circular in its basic form and has three sections in the radial direction.
• An outer clamping region 4 is tapered cone-shaped.
• a middle stop ring portion 3 is aligned in the mounted state perpendicular to a motor shaft.
• Inner spring arms 2 form part surfaces of a conical surface in their entirety.
• the spring arms 2 are separated by slot-like recesses 14.
• the recesses 14 extend into the stop ring area 3.
• Fig. 3 shows an assembly drawing with the steel housing 10, the
• Deep groove ball bearing 8 and the spring steel disc 5 protrudes from the second recess 12, so that the deep groove ball bearing 8 protrudes from the second recess 12, so that the deep groove ball bearing 8
• Spring steel plate 5 with its spring arms 2 rests on an edge of an outer ring 9 of the deep groove ball bearing 8 and can exert a radial and an axial force component on the outer ring 9.
• the spring steel disc 5 is in a first
• the spring steel disc 5 is clamped with its clamping region 4 on the first cylinder jacket 21 (see FIG. 1). To make this possible, is the
• Spring steel disc 5 cured so that its material is harder compared to the steel housing 10. With its stop ring area 3, the spring steel disc 5 bears against the stop 6 of the steel housing 10.
• Fig. 4 shows an assembly drawing of an electric motor 1 with the as
• the electric motor 1 shown in the application example is an electronically commutated DC motor which has a rotor 18 equipped with permanent magnets 27, a stator 19 wound with a winding 24, and a Housing, which consists of a bearing plate 20 and the steel housing 10 has.
• the rotor 18 consists of a smooth shaft 25, a rotor core 26, the permanent magnet 27 and a Geberpolrad 28, which is held on a carrier 33 which is axially pressed into recesses 34 of the rotor core 26.
• a laminated stator core 29, a gear pump 30, a printed circuit board 31, a sensor 17 and a plug 32 are shown.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Mechanical Engineering (AREA)
• Motor Or Generator Frames (AREA)
• Rolling Contact Bearings (AREA)
• Mounting Of Bearings Or Others (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=56681908

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (3)

Citations (4)

Family Cites Families (24)

• 2015
  • 2015-07-13 DE DE102015213022.3A patent/DE102015213022A1/de active Pending
• 2016
  • 2016-06-28 KR KR1020187003823A patent/KR102077066B1/ko active IP Right Grant
  • 2016-06-28 WO PCT/DE2016/200295 patent/WO2017008797A1/de active Application Filing
  • 2016-06-28 JP JP2018501167A patent/JP6680864B2/ja active Active
  • 2016-06-28 CN CN201680040968.4A patent/CN107852063A/zh active Pending

Patent Citations (4)

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