DE6601492U - CRANKS, ESPECIALLY FOR SEWING MACHINES - Google Patents

CRANKS, ESPECIALLY FOR SEWING MACHINES

Info

Publication number
DE6601492U
DE6601492U DE1968@@6601492U DE6601492U DE6601492U DE 6601492 U DE6601492 U DE 6601492U DE 6601492 U DE6601492 U DE 6601492U DE 6601492 U DE6601492 U DE 6601492U
Authority
DE
Germany
Prior art keywords
shaft
arm
crank
sewing machines
eccentric pin
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
Application number
DE1968@@6601492U
Other languages
German (de)
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Publication of DE6601492U publication Critical patent/DE6601492U/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/22—Cranks; Eccentrics
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B49/00—Take-up devices, e.g. levers, for the needle thread
    • D05B49/02—Take-up devices, e.g. levers, for the needle thread operated by cams or linkages
    • 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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/22—Cranks; Eccentrics
    • F16C3/26—Elastic crank-webs; Resiliently-mounted crank-pins
    • 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
    • F16C2340/00—Apparatus for treating textiles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Sewing Machines And Sewing (AREA)

Description

"Kurbel, insbesondere für Nähmaschinen""Crank, especially for sewing machines"

Gegenstand vorliegender Erfindung ist eine Kurbel, insbesondere für Nähmaschinen, dadurch gekennzeichnet, dass ihre Welle und ihr Exzenterzapfen durch einen Arm aus Kunststoff verbunden sind.The present invention relates to a crank, in particular for sewing machines, characterized in that its shaft and its eccentric pin are connected by a plastic arm.

Eine solche Ausführung eines Kurbelarmes aus Kunststoff, z.B. aus Polyamid gestattet es, Kurbeln für feinmechanische Apparate, wie z.B. Nähmaschinen oder kinematographische Aufnahme- und Wiedergabegeräte, rasch und billig herzustellen. Ferner weist der Kurbelarm aus Kunststoff denSuch a design of a crank arm made of plastic, e.g. made of polyamide, allows cranks for precision mechanical Apparatus such as sewing machines or cinematographic recording and reproducing devices can be manufactured quickly and cheaply. Furthermore, the plastic crank arm has the

HW/Jb (8643)HW / Jb (8643)

14921492

Vorteil auf, dank der Elastizität dieses Stoffes, kleine Parallelitätsfehler der Kurbelaxen auszugleichen.Advantage, thanks to the elasticity of this material, to compensate for small errors in parallelism of the crank axes.

Die einzige Figur der beiliegenden Zeichnung veranschaulicht schematisch und beispielhaft eine AusfUhrungsform der erfindungsgemässen Kurbel.The single figure of the accompanying drawing illustrates schematically and by way of example an embodiment of the invention Crank.

Die durch die Zeichnung dargestellte Kurbel wird bei Nähmaschinen zum Antrieb des Fadengebers 1 angewandt. Diese Kurbel umfasst eine im Oberteil des Gehäuses der Nähmaschine angeordnete Antriebswelle 4, an deren Stumpf ein Arm oder Schwungkranz 3 sitzt und welcher die Welle 2 trägt. Das Ende 5 der Welle 2 sowie das Ende 6 des Exzenterzapfens 7 dieser Kurbel sind gerändelt. Diese gerändelten Partien 5 und 6 der Welle 2 bzw. des Exzenterzapfens 7 gewährleisten eine einwandfreie Befestigung des aus Kunststoff, z.B. aus Polyamid bestehenden Armes 8. Dieser Kurbelarm 8 wird also um die Enden 5 und 6 der Welle 2 bzw. des Exzenterzapfens 7 gegossen oder gespritzt.The crank shown in the drawing is used in sewing machines to drive the thread dispenser 1. These The crank comprises a drive shaft 4 arranged in the upper part of the housing of the sewing machine, on the stump of which an arm or Flywheel 3 is seated and which carries the shaft 2. The end 5 of the shaft 2 and the end 6 of the eccentric pin 7 of this Cranks are knurled. These knurled parts 5 and 6 of the shaft 2 and the eccentric pin 7 ensure a perfect Fastening of the plastic, e.g. made of polyamide existing arm 8. This crank arm 8 is therefore cast around the ends 5 and 6 of the shaft 2 or the eccentric pin 7 or injected.

Bei dem dargestellten Ausführungsbeispiel bildet die Welle 2 selbst den Exzenterzapfen zum Antrieb einer Schubstange 9, welche die Nadelstange einer Nähmaschine steuert. Diese Schubstange 9 ist an der Welle 2 unter Zwischenschaltung von selbstschmierenden Lagern 10 angelenkt. Ferner treibt der Exzenterzapfen 7 den Fadengeber 1 an und ist ebenfalls mit einem selbstschraierenden Lager 11 versehen. Dieser Fadengeber 1 wird anderseits bei seinen Schwingbewegungen durchIn the illustrated embodiment, the shaft 2 itself forms the eccentric pin for driving a push rod 9, which controls the needle bar of a sewing machine. This push rod 9 is on the shaft 2 with the interposition hinged by self-lubricating bearings 10. Furthermore, the eccentric pin 7 drives the thread feeder 1 and is also provided with a self-screwing bearing 11. This thread giver 1 is on the other hand through its oscillating movements

492492

den am Gehäuse der Nähmaschine angelenkten Arm 12 geführt, welcher durch die Welle IjJ mit dem Fadengeber 1 verbunden ist.guided the arm 12 articulated on the housing of the sewing machine, which is connected to the thread dispenser 1 by the shaft IjJ is.

Als Variante können die Massnahmen zur Verankerung des Endes der Welle 2 bzw. des Exzenterzapfens 7 im Kunststoff-Arm 8 statt durch eine Rändelung, durch eingefräste radale oder axiale Einschnitte oder andere Massnahmen erzielt werden, die eine einwandfreie radiale und axiale Befestigung der einzelnen Teile der Kurbel gewährleisten.As a variant, the measures to anchor the End of the shaft 2 or the eccentric pin 7 in the plastic arm 8 can be achieved by means of milled radial or axial cuts or other measures instead of knurling, which ensure perfect radial and axial fastening of the individual parts of the crank.

Falls die Kurbel einen beschränkten Äxenabstand aufweisen soll, ist es möglich, das Befestigungsende der Welle 2 bzw, des Exzenterzapfens 7 auf einen kleineren Durchmesser als der grundsätzliche Querschnitt dieser Teile zu drehen oderIf the cranks have a limited axis distance should, it is possible, the fastening end of the shaft 2 or the eccentric pin 7 to a smaller diameter than the basic cross-section of these parts to rotate or

eVerrtueii diese Enden in porm eines HaVnmnndes QU^T snnstigen Formen zu fräsen, um ein Uebereinandergreifen derselben zu gestatten.eVerrtueii to mill these ends in the form of a Ha Vnmn ndes QU ^ T in order to allow them to overlap.

■- ■ - rr

Claims (2)

Grebrauciis-{fiusieran neidung der Firma MEPINA S.A. Fribourg (Schweiz) 5» route de Beaumont Sj ö % yjt t; ijansp r ücheGrebrauciis- {fiusieran enrollment of the company MEPINA S.A. Friborg (Switzerland) 5 »route de Beaumont Sj ö% yjt t; ijanspeach 1. Kurbel, insbesondere für Nähmaschinen, dadurch gekennzeichnet, dass ihre Welle (2) und ihr Exzenterzapfen (7) durch einen Arm (8) aus Kunststoff verbunden sind.1. Crank, especially for sewing machines, characterized in that its shaft (2) and its eccentric pin (7) by an arm (8) made of plastic are connected. 2. Kurbel nach Anspruch 1, dadurch gekennzeich net, dass die in dem den Arm (8) bildenden Material eingebetteten Partien (5* 6) der Welle (2) bzw. des Exzenterzapfens (7) Mittel zur Verankerung im Kunststoff aufweisen.2. Crank according to claim 1, characterized in that the material in which the arm (8) is formed embedded parts (5 * 6) of the shaft (2) or the eccentric pin (7) means for anchoring in the plastic exhibit. J). Kurbel nach den Ansprüchen 1 und 2, dadurch g e kennzeichnet, dass ihr ihr Arm (8) aus Polyamid besteht. J). Crank according to Claims 1 and 2, characterized in that its arm (8) consists of polyamide.
DE1968@@6601492U 1967-03-03 1968-02-06 CRANKS, ESPECIALLY FOR SEWING MACHINES Expired DE6601492U (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH319067A CH453005A (en) 1967-03-03 1967-03-03 Crank, especially for sewing machine

Publications (1)

Publication Number Publication Date
DE6601492U true DE6601492U (en) 1969-03-13

Family

ID=4250577

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1968@@6601492U Expired DE6601492U (en) 1967-03-03 1968-02-06 CRANKS, ESPECIALLY FOR SEWING MACHINES

Country Status (6)

Country Link
BE (1) BE710346A (en)
CH (1) CH453005A (en)
DE (1) DE6601492U (en)
FR (1) FR1556492A (en)
GB (1) GB1176629A (en)
NL (1) NL6801953A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6241419A (en) * 1985-08-14 1987-02-23 Hitachi Ltd Crankshaft
DE3642116A1 (en) * 1986-12-10 1988-06-23 Agintec Ag SPRING-ELASTIC ECCENTRIC BEARING FOR DISPLACEMENT MACHINES

Also Published As

Publication number Publication date
FR1556492A (en) 1969-02-07
CH453005A (en) 1968-05-31
GB1176629A (en) 1970-01-07
BE710346A (en) 1968-06-17
NL6801953A (en) 1968-09-04

Similar Documents

Publication Publication Date Title
DE6601492U (en) CRANKS, ESPECIALLY FOR SEWING MACHINES
DE8525308U1 (en) Feed device on a sewing machine
DE35815C (en) Movement device for shuttles and fabric slides in sewing machines with an oscillating shuttle
DE600239C (en) Household sewing machine with a device for zigzag stitching through a needle that can swing transversely to the feed direction and a gripper rotating transversely to the feed direction
DE946276C (en) Chain stitch sewing machine with V-shaped housing
DE244019C (en)
DE1660963C (en) Chainstitch sewing machine with a looper that executes an elliptical movement
DE1804937U (en) PIVOT BEARING FOR A CRANK ROD.
DE353474C (en) Drive device for the screw conveyor of the rods of needle bar frames
DE308928C (en)
DE1836893U (en) BELT DRIVE FOR SEWING MACHINES.
DE811305C (en) Children's sewing machine
DE2556579A1 (en) DEVICE WITH TWO PARTS SUPPORTED BY CONNECTORS
DE282835C (en)
DE197735C (en)
DE401430C (en) Self-launch
DE1613320C3 (en) Oscillating armature motor
DE470463C (en) Overlock sewing machine with an overcast looper and a thread-guiding lower looper
AT149758B (en) Sewing machine gripper.
DE1871846U (en) SHAFT DEVICE FOR CHAIN STITCH VOYAGE MACHINE.
DE243154C (en)
DE384935C (en) Shaking shoe for feed containers of mills and other shredding machines
DE941760C (en) Drive for the thread-guiding catcher or for the non-thread-guiding piercer in sewing and linking machines
DE1435772A1 (en) Needle machine
DE315370C (en)