EP1582616A1 - Nähmaschine - Google Patents

Nähmaschine Download PDF

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Publication number
EP1582616A1
EP1582616A1 EP05005810A EP05005810A EP1582616A1 EP 1582616 A1 EP1582616 A1 EP 1582616A1 EP 05005810 A EP05005810 A EP 05005810A EP 05005810 A EP05005810 A EP 05005810A EP 1582616 A1 EP1582616 A1 EP 1582616A1
Authority
EP
European Patent Office
Prior art keywords
sewing machine
permanent magnet
recesses
rotor
stator
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.)
Withdrawn
Application number
EP05005810A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sevki Dr.-Ing. Hosagasi
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.)
Duerkopp Adler AG
Original Assignee
Duerkopp Adler AG
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 Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP1582616A1 publication Critical patent/EP1582616A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/10—Electrical or electromagnetic drives
    • D05B69/12—Electrical or electromagnetic drives using rotary electric motors

Definitions

  • the invention relates to a sewing machine according to the preamble of the claim 1.
  • An embodiment of the recesses according to claim 2 allows a frontal Insertion of the permanent magnets in the rotor body.
  • the permanent magnets can therefore be replaced even if the Rotor is mounted together with the stator.
  • Permanent magnets according to claim 5 lead to a simple design and easy to mount electric motor with defined field line.
  • An attachment of the nose or the groove according to claim 6 leads to a the lowest possible disturbance of the field line course.
  • the sewing machine 1 shown in FIGS. 1 to 13 comprises a box-like Base plate 2, an upper arm 3 and connecting them Stand 4.
  • the sewing machine 1 is thus formed a total of approximately C-shaped.
  • an arm shaft 5 is mounted, via which a needle bar. 6 with a needle 7 by means of a crank drive not shown in detail can be driven up and down.
  • From the arm shaft 5 is connected via a Belt drive 8 and mounted in the base plate 2 shaft 9 in the Base plate 2 stored and the needle 7 associated gripper driven, which is also not shown in detail.
  • a flange portion 10 is on the arm shaft 5 at the level of the belt drive 8 arranged.
  • the arm shaft 5 with a for this purpose aligned drive shaft 11 of a arm shaft drive motor 12th rotatably connected.
  • Adjacent to the flange portion 10 is the drive shaft 11 supported by an axial / radial bearing 12a.
  • the drive shaft 11 On a free end 13 the drive shaft 11 is a handwheel 14 attached and a radial screw 15 rotatably connected to the drive shaft 11.
  • the radial screw 15 is screwed into a hand wheel carrier body 16, the in turn attached to the free end 13 of the drive shaft 11.
  • FIG. 4 and 5 Perspective, enlarged views of the handwheel 14 are shown in FIG. 4 and 5.
  • An operating portion 19 of the handwheel 14 is free from outside accessible circumferential collar configured. This is based on a cylindrical outer boundary wall 20 of the handwheel 14. Between the outer Boundary wall 20 and a spaced therefrom inner boundary wall 21 of the handwheel 14, a fan 22 is arranged, which the cooling of the arm shaft drive motor 12 is used.
  • the fan wheel 22 has a total of twelve fan blades 23.
  • the fan 22 is in Handwheel 14 housed. Between the boundary walls 20, 21 is defines an annular space in which the fan blades 23 partially arranged are. Each of the fan blades 23 is integral with both the inner boundary wall 20 and connected to the outer boundary wall 21.
  • the fan blades 23 are where they are integral with one within the Operating portion 19 arranged, dome-shaped outward tapering end portion 24 of the outer boundary wall 20 pass over obliquely with respect to radial surfaces to the longitudinal axis 18 employed. in the Course inside are the fan blades 23 within the end portion 24th bent in an inner arc portion 25 so that the inner ends the arcuate portions 25 extend approximately radially to the longitudinal axis 18.
  • every fourth fan blade 23 an integrally formed on this screw 26, in the with mounted handwheel 14 each one of the three mounting screws 17th is included.
  • the fan blades 23 go to the drive motor 12 radially in one piece in the inner boundary wall 21 of the handwheel 14th above.
  • the inner boundary wall 21 widens conically to the drive motor 12 out.
  • An Anschraubwand 27, the part of the inner boundary wall 21, lies flat against a peripheral collar 28 of the handwheel carrier body 16 on.
  • the threads for screwing the fastening screws 17 executed.
  • Toward the drive motor 12 is the free end of the inner boundary wall 21 together with the over these protruding ends of the fan blades 23 on a guide cap 29, which is also rotatably connected to the drive shaft 11.
  • the Rotary signal generator 31 provides position information about the current rotational position the drive shaft 11 to a not shown in the drawing Control device of the sewing machine 1 on.
  • the rotary signal generator 31 is attached to a housing-mounted mounting plate 32.
  • the holding plate 32 is a stator 33 of the drive motor 12 downstream.
  • the holding plate 32 has an opening 34 for the drive shaft 11.
  • the stator 33 is in a hollow cylindrical recess 35 of a motor housing 36 arranged, which is part of the sewing machine housing and is completely disposed within the sewing machine housing.
  • the motor housing 36 is integrally formed in the sewing machine housing.
  • a plurality of air ducts 37 which are parallel extend to the longitudinal axis 18.
  • the section of Fig. 2 shows the air ducts 37 in frontal view.
  • the air ducts 37 are as longitudinal grooves in the stator 33 facing inner wall of the motor housing 36th executed.
  • the air ducts 37 are shown by dashed lines Lines indicated.
  • the air ducts 37 Via openings 38 at the level of the holding plate 32 are the air ducts 37 to the fan 22 back with the of the outer boundary wall 20 of the handwheel 14 to the outside and the inner Limiting wall 21 and the guide cap 29 limited to the inside Annular space connected.
  • This annulus is used for cooling air flow between the fan 22 and the air ducts 37.
  • the other End of the air ducts 37 opens in the region of the flange 10 in the Interior of the sewing machine 1 off.
  • the longitudinal extent of the stator 33 is less than that of the motor housing 36.
  • the metal strips 38a prevent over the over the stator 33 projecting portions of the air ducts 37 on both sides of the stator 33 a connection of the air ducts 37 to two annular communication spaces 39 is given. A dust entry in the arm shaft drive motor 12 is prevented.
  • the rotor 40 is in turn rotationally fixed connected to the drive shaft 11.
  • Fig. 3 right next to the rotor body 41 is a ring-shaped the drive shaft 11 surrounding balancing body 40a rotatably connected to the drive shaft 11.
  • the balancing body 40a carries not shown balancing weights for balancing the drive shaft 11.
  • a rotor body 41 of the rotor 40 has a total four recesses 42 to 45, each for receiving one Permanent magnets 46 are formed.
  • the recesses 42 to 45 in the Rotor body 41 open at the end faces of the rotor 40 via one Receiving opening 45a.
  • the receiving openings 45a are mounted Rotor 40 in Fig. 3 to the left via a step in the drive shaft eleventh and closed in Fig. 3 to the right over the balancing body 40a.
  • a permanent magnet 46 is shown in FIGS. 8 and 9.
  • the permanent magnet 46 is formed as a flat cuboid, wherein the magnetic poles of the permanent magnet 46 are arranged such that in the permanent magnet 46 the field lines vertically between the two in terms of area largest side walls 47, 48 of the permanent magnet 46 extend.
  • Fig. 8 Of the Course of the magnetic field lines between the magnetic poles South and north of the permanent magnet 46 is shown in Fig. 8 by an arrow 49th indicated. Through this course, the magnetic orientation of the Permanent magnets 46 fixed.
  • the permanent magnet 46 a longitudinal groove 50 with arc or part-circular base.
  • each of the recesses 42 to 45 has a protruding Longitudinal nose 51 on.
  • This nut-and-nose mating forces that of the Permanent magnet 46 in one of the recesses 42 to 45 only inserted can be that the north pole of the permanent magnet of the Longitudinal nose 51 faces.
  • the permanent magnets 46 can therefore in their associated recesses 42 to 45 only in exactly one magnetic Orientation to be included.
  • the four permanent magnets 46 are in FIG the recesses 42 to 45 within the hollow cylindrical rotor body 41 in the circumferential direction about the longitudinal axis 18 in each case by 90 ° offset from one another arranged such that the largest in terms of area side walls 47, 48 of the permanent magnets 46 with chordal planes one of an outer wall 52 of the rotor body 41 predetermined cylindrical surface coincide.
  • the longitudinal projections 51 in the orientation of the rotor body 41 according to FIGS. 6 and 7, top and bottom recesses 42, 44 are centered outside and the longitudinal noses of the other two recesses 43, 45 centered inside.
  • the longitudinal recesses 54 extend along the entire rotor body 41 parallel to the longitudinal axis 18.
  • the longitudinal recesses 54 are as grooves with formed arcuate or part-circular base. They have a depth T on the remaining strength S of the rotor body 41 between the Longitudinal recesses 54 and the recesses 42 to 45 is comparable (see Fig. 7).
  • FIGS. 3, 6, 11 and 12 The further construction of the drive motor 12 is shown in FIGS. 3, 6, 11 and 12 shown.
  • a stator body 55 of the stator 33 has a total of twelve pole pieces 56, which the outer wall 52 of the rotor body 41 in the circumferential direction Surrounded about the longitudinal axis 18 evenly distributed.
  • the pole shoes 56 are associated with excitation windings 57 (see Fig. 3).
  • the number of pole shoes 56 of the stator 33 is greater than the number of Permanent magnets 46, namely three times as large. Alternatively, there are others Numbers of pole shoes on the one hand and permanent magnets on the other possible. Preferably, the number of pole shoes is greater than that Number of permanent magnets. The number of pole shoes can be, for example also twice as large as the number of permanent magnets.
  • the attachment of the stator body 55 to the motor housing 36 is shown in detail in FIG the detail enlargement of FIG. 11 is shown.
  • the stator body 55 has three frontally three circumferentially about the longitudinal axis 18 evenly distributed arranged flange portions 58 which radially over the stator body 55 survive.
  • the flange portions 58 each have a through hole 59. Through each of the through holes 59 is a fastening screw 60 inserted, each in a parallel to the longitudinal axis 18th extending screw in the motor housing 36 is screwed.
  • the Section of Fig. 3 is the attachment over the lower mounting screw 60 not shown.
  • FIG. 10 A in the drive motor 12 extending magnetic flux through the stator 33 and the rotor 40 is shown in FIG. 10 by way of example with reference to two magnetic Field lines a, b shown.
  • the closed field line b is completely within the closed field line a.
  • the course of the field lines a, b is subsequently in the flow direction according to the directional arrows 49 described in the permanent magnet 46:
  • the path of the inner field line b runs through a due the longitudinal recess 54 enlarged air gap in the space between the rotor body 41 and the stator body 55.
  • the longitudinal recess 54 causes an increase in the distance of the field lines a, b to each other in comparison to a flow situation in the edge region 53 without the longitudinal recess 54. Due to the longitudinal recess 54 is the distance between the field lines a, b to each other largely independent of whether the gap between the rotor body 41 and the stator body 55 in the edge region 53 or spaced to pass through this becomes.
  • FIG. 1 Another embodiment of a sewing machine 1 is shown in FIG. This is described below only where they differ from the Execution of the sewing machine according to FIGS. 1 to 12 differs. components which correspond to those referred to above with reference have been described to Figs. 1 to 12, carry the same speedsziffem and will not be explained again in detail.
  • the embodiment of FIG. 13 th a continuous arm shaft 61.
  • arm shaft section 62 which is the arm shaft 5 of the embodiment of FIGS. 1 12
  • the arm shaft 61 of FIG. 13 has the same thickness as FIG the arm shaft 5 of FIGS. 1 to 12.
  • the arm shaft 61 tapers over a step 63.
  • a to the step 63 in Fig. 13 right subsequent further arm shaft portion 64 corresponds the drive shaft 11 of the embodiment according to FIGS. 1 to 12.
  • Die Arm shaft 61 is in the region of the flange portion 10 and the drive motor 12 arranged in a carrier sleeve 65.
  • the outer contour of the carrier sleeve 65 corresponds to that of the drive shaft 11 of the embodiment according to 1 to 12.
  • the carrier sleeve 65 is rotatably connected to the arm shaft 61.
  • the carrier sleeve 65 carries the rotatably connected thereto rotor 40th

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
EP05005810A 2004-03-29 2005-03-17 Nähmaschine Withdrawn EP1582616A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004015718 2004-03-29
DE200410015718 DE102004015718B3 (de) 2004-03-29 2004-03-29 Nähmaschine

Publications (1)

Publication Number Publication Date
EP1582616A1 true EP1582616A1 (de) 2005-10-05

Family

ID=34485687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05005810A Withdrawn EP1582616A1 (de) 2004-03-29 2005-03-17 Nähmaschine

Country Status (6)

Country Link
EP (1) EP1582616A1 (ko)
JP (1) JP2005279275A (ko)
KR (1) KR20060044659A (ko)
CN (1) CN1676726A (ko)
DE (1) DE102004015718B3 (ko)
TW (1) TW200535293A (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005011158A1 (de) 2005-03-09 2006-09-14 Joachim Fiedler Magnethaltevorrichtung
JP2007336671A (ja) * 2006-06-14 2007-12-27 Toshiba Mitsubishi-Electric Industrial System Corp 永久磁石回転電機の回転子
CN101617457B (zh) * 2007-03-15 2012-05-30 大金工业株式会社 励磁系统
JP2012139068A (ja) * 2010-12-27 2012-07-19 Mitsubishi Electric Corp 埋め込み磁石型モータの回転子
JP5852345B2 (ja) * 2011-06-30 2016-02-03 アスモ株式会社 ロータ及びモータ
JP5852367B2 (ja) * 2011-08-30 2016-02-03 アスモ株式会社 ロータ及びモータ
US9577483B2 (en) 2012-04-06 2017-02-21 Mitsubishi Electric Corporation Rotor for a permanent-magnet embedded motor having permanent magnets fitted into a plurality of magnet insertion holes formed in a circumferential direction
EP3458306B1 (en) 2016-05-18 2020-12-16 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co., Ltd. Console assembly for vehicle interior
KR101939177B1 (ko) * 2017-07-07 2019-01-16 강소대 모터를 내장한 스티치용 회전북통
US11572723B2 (en) 2019-02-27 2023-02-07 Shanghai Yanfeng Jinqiao Automotive Triim Systems Co. Ltd. Vehicle interior component

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667413A (en) * 1971-06-11 1972-06-06 Singer Co Cooling systems for sewing machine driving units
JPS61124241A (ja) * 1984-11-20 1986-06-12 Matsushita Electric Ind Co Ltd インナ−ロ−タ形小型直流モ−タのステ−タ
DE19704769A1 (de) * 1997-02-08 1998-08-27 Weh Herbert Prof Dr Ing Dr H C Mehrsträngige Synchronmaschine mit Permanentmagneten und Spulenmodulen
WO2001044554A1 (de) * 1999-12-18 2001-06-21 Frankl & Kirchner Gmbh & Co. Kg Fabrik Für Elektromotoren U. Elektrische Apparate Antrieb für eine nähmaschine, insbesondere eine industrienähmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001967A1 (en) * 1981-11-30 1983-06-09 KUMATANI, Hiroshi; Motor-driven sewing machine
US5146861A (en) * 1990-04-26 1992-09-15 Brother Kogyo Kabushiki Kaisha Sewing machine with a built-in driving motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667413A (en) * 1971-06-11 1972-06-06 Singer Co Cooling systems for sewing machine driving units
JPS61124241A (ja) * 1984-11-20 1986-06-12 Matsushita Electric Ind Co Ltd インナ−ロ−タ形小型直流モ−タのステ−タ
DE19704769A1 (de) * 1997-02-08 1998-08-27 Weh Herbert Prof Dr Ing Dr H C Mehrsträngige Synchronmaschine mit Permanentmagneten und Spulenmodulen
WO2001044554A1 (de) * 1999-12-18 2001-06-21 Frankl & Kirchner Gmbh & Co. Kg Fabrik Für Elektromotoren U. Elektrische Apparate Antrieb für eine nähmaschine, insbesondere eine industrienähmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 313 (E - 448) 24 October 1986 (1986-10-24) *

Also Published As

Publication number Publication date
JP2005279275A (ja) 2005-10-13
TW200535293A (en) 2005-11-01
CN1676726A (zh) 2005-10-05
KR20060044659A (ko) 2006-05-16
DE102004015718B3 (de) 2005-05-25

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