US3878802A - Motor housing and method of making the same - Google Patents

Motor housing and method of making the same Download PDF

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Publication number
US3878802A
US3878802A US370412A US37041273A US3878802A US 3878802 A US3878802 A US 3878802A US 370412 A US370412 A US 370412A US 37041273 A US37041273 A US 37041273A US 3878802 A US3878802 A US 3878802A
Authority
US
United States
Prior art keywords
end piece
piece
wall
housing
around
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US370412A
Other languages
English (en)
Inventor
Jakob Schmitt
Willy Voit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US3878802A publication Critical patent/US3878802A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H02K15/14—Casings; Enclosures; Supports
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49936—Surface interlocking

Definitions

  • This invention relates to two-pieced pot-shaped housings of the type used for small electric motors and the method of their manufacture.
  • pot-shaped housings One well-known method to manufacture pot-shaped housings is to use a blank made of expensive deepdrawing sheet metal and to shape it in the desired way with one or more sets of drawing tools and dies designed for use with each other. This relatively expensive and wasteful procedure must take into account a comparatively high percentage of rejects. because the housing. which is commonly used as the magnetic return yoke. must be made of relative thick material.
  • the wall piece for the housing is made ofa flat strip which is bent around the end piece while at the same time the end piece engages holding means provided on the strip which. when this assembly is complete. prevent at least axial displacement of the end piece relative to the housing wall.
  • the holding means are perforations near one edge of the wall piece into which projections on the circumference of the end piece engage.
  • the housing wall is closed on itself to form a tube. usually cylindrical. the closing seam of which can conveniently and effectively be provided by an interlocking array of tabs or tongues on the edges thereby joined together. this joint being readily effected as the bending of the wall piece around the end piece is completed.
  • FIG. I is a perspective view of the housing end piece
  • FIG. 2 is a plan view of the stamped strip which can be bent to form the housing wall.
  • FIG. 3 is an elevation view of a completed motor housing according to the invention.
  • the housing end piece shown in FIG. 1 is an essentially circular disc in the center of which a seat .11
  • FIG. 2 is shown a substantially flat strip I4. along the edge region 15 of which perforations 16 are provided. On one side edge 17 of the strip 14 are three dovetail type tabs 19, whereas the other side edge 18 of the strip 14 has indentations 20 shaped to match the dovetail form of the tabs I9. The length L of the projections 13 is smaller than the thickness D of the strip 14.
  • the strip I4 is bent progressively around the disc 10 in such a way that the tongues 13 penetrate into the perforations I6 of the strip.
  • the perforations 16. in cooperation with the projections 13. provide holding means by which the end piece is axially and radially secured in the now tube shaped housing wall.
  • the distances between the perforations l6 must accordingly correspond to the arc length between two neighboring projections I3 along the disc edge 12.
  • Theperforations 16 must furthermore be of such dimensions that the tongues l3 of the disc 10 can easily penetrate into the perforations 16 during the bending process.
  • the end piece I0 is rolled into the housing wall I4 at the same time as the end piece I0 engages the holding means 16. 21 or 22.
  • Such housings are therefore very simple to manufacture. They are cheaper than housings drawn from a single sheet of metal. but they correspond closely to such housings in their technical properties. Stability of structure. splash proof effectiveness and shaft centering of the housings of this invention are better than in the case of the known housings in which the end piece is welded or pecned onto the housing wall.
  • a further advantage of the invention arises from the fact that the choice of the material thickness for the end piece and the housing wall can be respectively suited to the particular requirements.
  • the housing wall thickness can be determined by the magnetic flux requirements. whereas for the choice of thickness for the end piece the mechanical stress arising in operation of the motor can be taken into consideration.
  • the method of manufacture of this invention can also be applied when instead of a disc shaped end piece.
  • a U-shaped bearing bracket is to be held fast in an iron member serving as the magnetic return path yoke which is rolled into shape.
  • the method of this invention is useful both for cylindrical housings and for other pot-shaped housings such. for example. as housings of rounded square or triangular contour. What is essential is that the housing should be put together in a simple way out of two pieces which. for example may be stamped out of a strip of sheet metal. in such a way that the housing wall can be rolled around the end piece in a single operation.
  • the two edges that are next to each other after the bending operation are connected to each other in a locking manner.
  • at least on one edge of the strip at least one dovetail tab is provided which during the bending operation will be pressed into an edge indentation in the other edge of the strip which is of matching dovetail form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Casings For Electric Apparatus (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US370412A 1972-07-25 1973-06-15 Motor housing and method of making the same Expired - Lifetime US3878802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2236408A DE2236408C3 (de) 1972-07-25 1972-07-25 Verfahren zum Herstellen eines topfförmigen Gehäuses für einen elektrischen Kleinmotor

Publications (1)

Publication Number Publication Date
US3878802A true US3878802A (en) 1975-04-22

Family

ID=5851607

Family Applications (1)

Application Number Title Priority Date Filing Date
US370412A Expired - Lifetime US3878802A (en) 1972-07-25 1973-06-15 Motor housing and method of making the same

Country Status (5)

Country Link
US (1) US3878802A (de)
DE (2) DE2236408C3 (de)
FR (1) FR2194066B1 (de)
GB (1) GB1435017A (de)
IT (1) IT991334B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043068A1 (de) * 1980-06-30 1982-01-06 Siemens Aktiengesellschaft Statoranordnung eines Kleinmotors, insbesondere eines Klauenpol-Schrittmotors
US4309815A (en) * 1978-03-09 1982-01-12 Robert Bosch Gmbh Method of manufacturing a housing for a small electrical machine
US4682066A (en) * 1985-11-12 1987-07-21 Black & Decker Inc. Alignment system for permanent magnet motors
US4793054A (en) * 1985-11-12 1988-12-27 Black & Decker Inc. Alignment system for permanent magnet motors
US5239741A (en) * 1992-08-27 1993-08-31 Shamos Desmond E Method of fabricating a pillow casing apparatus
EP0724921B1 (de) * 1995-01-03 1999-10-13 Kortenbach Verwaltungs- und Beteiligungsgesellschaft mbH & Co. Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe
US20050189831A1 (en) * 2001-02-23 2005-09-01 Ortt Earl M. Stator assembly with an overmolding that secures magnets to a flux ring and the flux ring to a stator housing
US20060188184A1 (en) * 2005-02-22 2006-08-24 Karl Frauhammer Housing, fastening device for a housing, and hand-held power tool with a housing
US20080101924A1 (en) * 2006-10-30 2008-05-01 Schlumberger Technology Corporation Electrical submersible pump
US10065388B2 (en) * 2013-12-23 2018-09-04 Benteler Automobiltechnik Gmbh Method for manufacturing hollow profiles, and hollow profile
CN114556757A (zh) * 2019-10-15 2022-05-27 前进工厂-奥伯基尔希股份公司 用于制造壳体的方法和装置

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928576A1 (de) * 1979-07-14 1981-02-05 Bosch Gmbh Robert Elektrischer kleinmotor, insbesondere scheibenwischermotor
DE3340671A1 (de) * 1983-11-10 1985-05-23 Willy Voit GmbH & Co Stanz- und Metallwerk, 6670 St Ingbert Verschluss fuer ringe oder topffoermige gehaeuse
DE3346319A1 (de) * 1983-12-22 1985-07-04 Grote & Hartmann Transportstreifenverbindung sowie verfahren und vorrichtung zu ihrer herstellung
GB2219531B (en) * 1988-06-08 1992-08-12 Eastway Electrical motors
EP0470852A3 (en) * 1990-08-09 1993-09-01 Zexel Australia Pty. Ltd. An electric motor assembly
DE4042069C2 (de) * 1990-12-28 1999-08-19 Teves Gmbh Alfred Gehäuse für einen pneumatischen Kraftverstärker und Verfahren zu dessen Herstellung
DE4138705C2 (de) * 1991-11-26 1994-12-15 Licentia Gmbh Gehäuse, insbesondere für elektrische Kleinmaschinen
DE4138706C2 (de) * 1991-11-26 1993-12-16 Licentia Gmbh Gehäuse, insbesondere für elektrische Kleinmaschinen
DE4335329A1 (de) * 1993-10-18 1995-04-20 Fichtel & Sachs Ag Gerollte Buchse, insbesondere für einen Schwingungsdämpfer
DE102007033076A1 (de) † 2007-07-13 2009-01-15 Dr. Fritz Faulhaber Gmbh & Co. Kg Elektrischer Kleinstantrieb sowie Rückschlusselement und Verfahren zu dessen Herstellung
DE102008007212B3 (de) * 2008-02-01 2009-10-15 BSH Bosch und Siemens Hausgeräte GmbH Gehäuse für den Antrieb eines elektrischen Geräts, insbesondere eines Haushaltsgeräts
DE102019200033A1 (de) * 2019-01-04 2020-07-09 Robert Bosch Gmbh Polgehäuse eines Elektromotors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544266A (en) * 1948-06-01 1951-03-06 Nat Electric Prod Corp Method of making outlet boxes
US3214803A (en) * 1963-01-03 1965-11-02 Hillsdale Tool And Mfg Company Core box vent
US3273601A (en) * 1966-09-20 Stamped tubular product and method of making the same
US3653116A (en) * 1970-09-25 1972-04-04 Ilg Ind Inc Method and apparatus for forming centrifugal fan housings
US3732616A (en) * 1968-06-26 1973-05-15 Universal Electric Co Method of making end frame structures for electric motors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE818534C (de) * 1948-10-02 1951-10-25 Siemens Schuckertwerke A G Aus Stahlblech bestehendes Gehaeuse fuer Elektromotoren, insbesondere fuer Haushaltmaschinen
DE1242726B (de) * 1965-11-26 1967-06-22 Telefunken Patent Chassis fuer ein Geraet der Elektrotechnik aus einer gedruckten Leiterplatte und einem rahmenfoermigen Traeger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273601A (en) * 1966-09-20 Stamped tubular product and method of making the same
US2544266A (en) * 1948-06-01 1951-03-06 Nat Electric Prod Corp Method of making outlet boxes
US3214803A (en) * 1963-01-03 1965-11-02 Hillsdale Tool And Mfg Company Core box vent
US3732616A (en) * 1968-06-26 1973-05-15 Universal Electric Co Method of making end frame structures for electric motors
US3653116A (en) * 1970-09-25 1972-04-04 Ilg Ind Inc Method and apparatus for forming centrifugal fan housings

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309815A (en) * 1978-03-09 1982-01-12 Robert Bosch Gmbh Method of manufacturing a housing for a small electrical machine
EP0043068A1 (de) * 1980-06-30 1982-01-06 Siemens Aktiengesellschaft Statoranordnung eines Kleinmotors, insbesondere eines Klauenpol-Schrittmotors
US4682066A (en) * 1985-11-12 1987-07-21 Black & Decker Inc. Alignment system for permanent magnet motors
US4793054A (en) * 1985-11-12 1988-12-27 Black & Decker Inc. Alignment system for permanent magnet motors
US5239741A (en) * 1992-08-27 1993-08-31 Shamos Desmond E Method of fabricating a pillow casing apparatus
EP0724921B1 (de) * 1995-01-03 1999-10-13 Kortenbach Verwaltungs- und Beteiligungsgesellschaft mbH & Co. Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe
US20050189831A1 (en) * 2001-02-23 2005-09-01 Ortt Earl M. Stator assembly with an overmolding that secures magnets to a flux ring and the flux ring to a stator housing
US7119469B2 (en) * 2001-02-23 2006-10-10 Black & Decker Inc. Stator assembly with an overmolding that secures magnets to a flux ring and the flux ring to a stator housing
US20060188184A1 (en) * 2005-02-22 2006-08-24 Karl Frauhammer Housing, fastening device for a housing, and hand-held power tool with a housing
US20080101924A1 (en) * 2006-10-30 2008-05-01 Schlumberger Technology Corporation Electrical submersible pump
US8287235B2 (en) 2006-10-30 2012-10-16 Schlumberger Technology Corporation Electrical submersible pump
US8678758B2 (en) 2006-10-30 2014-03-25 Schlumberger Technology Corporation Electrical submersible pump
US10065388B2 (en) * 2013-12-23 2018-09-04 Benteler Automobiltechnik Gmbh Method for manufacturing hollow profiles, and hollow profile
CN114556757A (zh) * 2019-10-15 2022-05-27 前进工厂-奥伯基尔希股份公司 用于制造壳体的方法和装置

Also Published As

Publication number Publication date
DE2264771A1 (de) 1975-01-23
FR2194066B1 (de) 1976-09-17
DE2236408B2 (de) 1975-01-09
IT991334B (it) 1975-07-30
GB1435017A (en) 1976-05-12
DE2236408A1 (de) 1974-02-14
DE2236408C3 (de) 1981-12-10
FR2194066A1 (de) 1974-02-22

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