EP0097566B1 - Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle, vorzugsweise zum Farbbandtransport eines Druckers - Google Patents

Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle, vorzugsweise zum Farbbandtransport eines Druckers Download PDF

Info

Publication number
EP0097566B1
EP0097566B1 EP19830401160 EP83401160A EP0097566B1 EP 0097566 B1 EP0097566 B1 EP 0097566B1 EP 19830401160 EP19830401160 EP 19830401160 EP 83401160 A EP83401160 A EP 83401160A EP 0097566 B1 EP0097566 B1 EP 0097566B1
Authority
EP
European Patent Office
Prior art keywords
wheel
driven
satellite
wheels
driving
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
EP19830401160
Other languages
English (en)
French (fr)
Other versions
EP0097566A1 (de
Inventor
Christian Dol
Guy Chevrollier
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.)
Sagem SA
Original Assignee
Sagem 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 Sagem SA filed Critical Sagem SA
Publication of EP0097566A1 publication Critical patent/EP0097566A1/de
Application granted granted Critical
Publication of EP0097566B1 publication Critical patent/EP0097566B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/51—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means
    • B41J33/516—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means using a reversing-feeler responsive to the tension of the ribbon

Definitions

  • Devices of the type under consideration find a particularly interesting, but not exclusive, application for longitudinally moving an ink ribbon in a printing machine such as for example a typewriter, teletype, computer printer, etc.
  • the driving wheel and the satellite wheel associated with it are carried by an independent support capable of moving elastically transversely with respect to the driven wheels.
  • the transverse displacement of the support occurs during an increase in the resistive torque produced by the driven wheel (for example end of the ink ribbon or blocking of the ribbon) and the satellite wheel can then be released from the driven wheel with which it previously cooperated.
  • pivot around the axis of the driving wheel and come to cooperate with the other driven wheel for example to reverse the direction of travel of the ink ribbon.
  • the transverse movement of the support does not allow the drive of the driving shaft to be carried out by a conventional cable system and it is necessary to provide a specific geared motor.
  • document DE-C-166 065 describes a wheel arranged with radial springs, interposed between the hub and the rim.
  • the object of the invention is essentially to remedy the drawbacks explained above and to produce a compact, light device comprising few parts, reliable, able to be driven by cables in a conventional manner, and inexpensive so that it can be incorporated into widely distributed printing machines at relatively low cost.
  • the torque of the driving and satellite wheels can be housed in the free space separating the two driven wheels, the axis of the driving wheel being able for example to be aligned with the two shafts of the driven wheels.
  • the mechanical structure thus formed is relatively compact, with no cantilevered parts or members, comprises a minimum number of component parts and is therefore of minimum weight and inertia compatible with the requirements required for certain applications such as equipment of a printer machine cart.
  • each driven wheel comprises a rigid or substantially rigid rim and hub joined to one another by radially deformable elastically connecting means.
  • connection means comprise several res lots arranged radially and angularly equidistant from each other, these springs can be for example helical springs or bends spokes longitudinally elastically.
  • connection means advantageously comprise a continuous annular web, interposed between hub and rim, made of a material having elastic deformation properties at least in radial directions.
  • the wheel thus formed can be easily manufactured in one piece by using molding techniques for synthetic materials.
  • the driving, satellite and driven wheels are toothed wheels and / or friction wheels.
  • a particularly preferred, although not exclusive, application of the mechanical drive device of the invention resides in a device for longitudinally moving an ink ribbon of a printing machine such as a typewriter, teletype, computer printer, etc. , the two driven wheels then cooperating respectively in rotation with two support plates for the reels for winding the ink ribbon.
  • this device is placed on the mobile carriage of the printing machine and that the driving shaft cooperates with cable drive means known per se, comprising two free wheels mounted on the drive shaft and two parallel drive cables coiled respectively around the two freewheels.
  • a driving shaft 1 drives a driving wheel 2: for example, as shown, the wheel 2 is wedged on the shaft 1.
  • a satellite wheel 3 cooperates permanently with the driving wheel 2 and is continuously driven by it; the wheel 3 is mounted idly on a support 4 (constituted for example by two lateral flanges) which can rotate freely around the axis of the driving wheel 2.
  • a first driven wheel 5 is provided which rotates a first driven shaft 6 (the wheel 5 can for example be wedged on the shaft 6) and with which the satellite wheel 3 can come into engagement.
  • a second driven wheel 7 is solid in rotation with a second driven shaft 8 (for example by being wedged on the shaft 8) and the satellite wheel 3 can come into engagement with the second driven wheel 7.
  • the axes of the driving wheel 2, of the satellite wheel 3 and of the two driven wheels 5 and 7 are mutually parallel and substantially perpendicular to a support plate 9, all the wheels being substantially coplanar.
  • the two driven wheels 5, 7 are arranged at equal distance from the axis of the driving wheel 2, this distance being less than the sum of the diameter of the satellite wheel 3 and the radius of the driving wheel 2.
  • the two driven wheels 5 and 7 are arranged to be able to undergo local radial elastic deformations; in other words, they are arranged so that their respective axes remain fixed but that their periphery can deform, or move, radially locally.
  • each wheel 5, 7 comprises a rigid hub respectively 10, 11, a rigid or substantially rigid rim respectively 12, 13, and connecting means respectively 14, 15 interposed between the rim and the hub, these connecting means being suitable to undergo radial elastic deformations.
  • the elastic means 14, 15 may for example be constituted by radial helical springs, in particular three springs arranged at 120 ° as shown. It can also be springs constituted by masses of elastomer. It can also be bent spokes curable longitudinally.
  • the connecting means 14, 15 consist of a continuous web made of a material strong enough to ensure the mechanical connection of the rim 12, 13 to the hub 10, 11, but simultaneously having elastic deformation properties at least in radial directions.
  • the wheel can be produced by double injection molding, the web being made of rubber, polyurethane, etc., and the hub and rim made of plastic.
  • connection means are constituted by the above mentioned raises or by a continuous veil.
  • the wheels used can be of any type suitable for the proper transmission of torques. They may be toothed wheels, wheels with a smooth surface having a high coefficient of friction, wheels with a grooved surface or any combination of such wheels.
  • the driving shaft 1 drives the driving wheel 2 for example in the dextrorotatory direction and itself drives the satellite wheel 3 in the senestrogyre direction.
  • the support 4 tends to rotate in the dextrorotatory direction around the axis of the wheel 2 on which it is articulated and therefore, in normal operation, the satellite wheel 3 remains engaged. against the driven wheel 5.
  • the reaction force maintaining the satellite wheel 3 applied against the driven wheel 5 is less than the radial deformation force of the means 14, it follows that the device is in the stable position shown in FIG. 1, the wheel 5 being driven in the dextrorotatory direction.
  • the reaction torque which keeps the satellite wheel 3 in abutment against the driven wheel 5 increases and, when the force thus generated becomes greater than the radial elastic force of the connection means 14, the satellite wheel 3 pushes the rim 12 of the driven wheel 5 towards the hub 10 against the radial elastic forces exerted by the connection means 14.
  • the hub 10 retains the same axis of rotation (in this case, it remains wedged on the driven shaft 6), but the rim 12 is itself off-center (FIG. 2).
  • the satellite wheel 3 then escapes contact with the driven wheel 5, then, due to the rotation caused by the reaction torque, pivots around the driving shaft 1 to come into contact with the driven wheel 7 which it drives in dextrorotatory rotation (figure 3).
  • the device of the invention is likely to find many applications among which we will note more particularly that relating to the training of ink ribbons in printing machines such as typewriters, teletypes, computer printers, etc.
  • Such an application is shown diagrammatically in FIGS. 4 to 6 to which reference is now made (and on which the elements identical to those of FIGS. 1 to 4 are designated by the same reference numerals).
  • Brakes 25, cooperating respectively with the driven wheels 5 and 7, ensure constant tensioning of the ribbon 20 (see FIG. 4).
  • the two coils 19 and 22 are selectively driven by the satellite wheel 3, in the direct direction (arrow 23) in the case of a normal drive (wheel 3 shown in solid lines) or in the direction reverse (arrow 24) in the case where the ribbon is prevented from moving in the normal direction (wheel 3 shown in phantom).
  • This assembly automatically reverses the direction of travel of the ribbon, for example at the end of the ribbon or in the event of the ribbon jamming in the normal direction (arrow 23).
  • the satellite wheel 3 turns alone around the shaft 1 without driving the driven wheels 5 and 7.
  • the assembly shown in Figures 4 to 6 is particularly interesting in that it can be installed easily, due to its compactness, on a carriage of the printing machine.
  • the driving shaft 1 does not undergo any transverse movement relative to the driven wheels and to the plate, it is not necessary to have recourse to an independent motor device, such as a geared motor; one can carry out the drive of the driving shaft 1 using a conventional drive by double cable and double freewheel, which is commonly used in printing machines.
  • a first cable 28, connected to first drive means, is wound in the dextrorotatory direction around the freewheel 26 while a second cable 29, connected to second drive means, is wound in the senestrogyre direction around the freewheel 27, so that the leading tree 1 is driven in rotation by one or the other of the free wheels 26, 27 while the carriage is moving.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Transmission Devices (AREA)

Claims (7)

1. Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle mit:
- einer ein Antriebsrad (2) antreibenden Antriebswelle (1),
- einem Satellitenrad (3), das ständig durch dieses Antriebsrad (2) angetrieben wird und lose auf einem Träger (4) gelagert ist, der frei um die Achse des Antriebsrades (2) drehbar ist,
- einem ersten angetriebenen Rad (5), das drehfest mit der ersten angetriebenen Welle (6) verbunden ist und mit dem des Satellitenrad (3) in Eingriff kommen kann,
- einem zweiten angetriebenen Rad (7), das drehfest mit der zweiten angetriebenen Welle (8) verbunden ist und mit dem das Satellitenrad (3) in Eingriff kommen kann,
wobei die Achsen des Antriebsrades (2), des Satellitenrades (3) und der beiden angetriebenen Räder (5, 7) parallel verlaufen und die beiden angetriebenen Wellen (6, 8) im gleichen Abstand von der Antriebswelle (1) angeordnet sind, der kleiner als die Summe des Durchmessers des Satellitenrades (3) und der Radien des Antriebsrades (2) und der angetriebenen Räder (5, 7) ist, dadurch gekennzeichnet, daß:
- die Antriebswelle (1) derart gelagert ist, daß sie mit den beiden angetriebenen Wellen (6, 8) weitgehend fluchtet,
- die beiden angetriebenen Räder (5, 7) derart ausgebildet sind, daß sie elastisch deformierbar sind, und zwar örtlich in radialer Richtung,
- und der Abstand zwischen jeder angetriebenen Welle (6, 8) und der Antriebswelle (1) um einen Betrag kleiner als die Summe des Durchmessers des Satellitenrades (3) und der Radien des Antriebsrades (2) und der angetriebenen Räder (5, 7) ist, der der radialen Verformungsmöglichkeit jeder der beiden erwähnten angetriebenen Räder (5, 7) entspricht, so daß, wenn die eine der beiden eingetriebenen Wellen blockiert ist, sich das Satellitenrad auf dem entsprechenden angetriebenen Rad abstützt, dessen elastische Radialverformung bewirkt und durch Abrollen auf seinem Umfang mit diesem außer Berührung kommt, so daß sich der Träger des Satellitenrades so weit verschwenken kann, bis das Satellitenrad mit dem anderen angetriebenen Rad in Eingriff kommt, um dieses und damit die andere angetriebene Welle anzutreiben, wobei sich dann der gesamte Vorgang wiederholen kann, wenn diese andere angetriebene Welle ihrerseits blockiert ist.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jedes angetriebene Rad (5, 7) eine starre oder weitgehend starre Felge (12, 13) und Nabe (10, 11) aufweist, die miteinander durch radial elastisch deformierbare Verbindungsmittel (14, 15) verbunden sind.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die erwähnten Verbindungsmittel (14, 15) mehrere radial und in gleichen Winkelabständen zueinander angeordnete Federn aufweisen.
4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die erwähnten Verbindungsmittel eine kontinuierliche Ringscheibe aufweisen, die zwischen Nabe und Felge angeordnet ist und aus einem Material besteht, das wenigstens in radialen Richtungen elastisch verformbar ist.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Antriebsrad, das Satellitenrad und die angetriebenen Räder Zahnräder und/oder Reibräder sind.
6. Vorrichtung zum Farbbandtransport eines Druckers, dadurch gekennzeichnet, daß sie eine mechanische Antriebsvorrichtung nach einem der Ansprüche 1 bis 5 aufweist, wobei die beiden angetriebenen Räder (5, 7) jeweils in Drehung mit zwei Tragplatten (18, 21) für Farbbandspulen (19, 22) zusammenwirken.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß sie auf dem Wagen des Druckers angeordnet ist und daß die Antriebswelle (1) in an sich bekannter Weise mit Kabel (26 bis 29) aufweisenden Antriebsmitteln zusammenwirkt, die zwei auf der Antriebswelle gelagerte freie Räder (26, 27) und zwei jeweils um die beiden freien Räder herumgewickelte parallele Antriebskabel (28, 29) aufweisen.
EP19830401160 1982-06-17 1983-06-07 Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle, vorzugsweise zum Farbbandtransport eines Druckers Expired EP0097566B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8210607A FR2528929B1 (fr) 1982-06-17 1982-06-17 Perfectionnements apportes a des dispositifs mecaniques d'entrainement selectif d'au moins deux arbres menes a partir d'un arbre menant unique, notamment pour le deplacement longitudinal d'un ruban encreur dans une machine imprimante
FR8210607 1982-06-17

Publications (2)

Publication Number Publication Date
EP0097566A1 EP0097566A1 (de) 1984-01-04
EP0097566B1 true EP0097566B1 (de) 1987-06-03

Family

ID=9275114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830401160 Expired EP0097566B1 (de) 1982-06-17 1983-06-07 Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle, vorzugsweise zum Farbbandtransport eines Druckers

Country Status (5)

Country Link
EP (1) EP0097566B1 (de)
JP (1) JPS596460A (de)
DE (1) DE3371883D1 (de)
FR (1) FR2528929B1 (de)
YU (1) YU134183A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8800650A (nl) * 1988-03-16 1989-10-16 Jan Kelders Inktcassette.
US4850725A (en) * 1988-06-15 1989-07-25 Ncr Corporation Unidirectional ribbon drive mechanism
JP5857576B2 (ja) * 2011-09-21 2016-02-10 アイシン精機株式会社 複数出力切替機構
WO2014074780A1 (en) * 2012-11-12 2014-05-15 Siemens Healthcare Diagnostics Inc. Single drive mechanism
JP7347077B2 (ja) 2019-09-30 2023-09-20 ブラザー工業株式会社 印刷用カセット
JP7395912B2 (ja) 2019-09-30 2023-12-12 ブラザー工業株式会社 印刷用カセット及び印刷装置
JP7306197B2 (ja) 2019-09-30 2023-07-11 ブラザー工業株式会社 印刷装置及び印刷用カセット

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE166065C (de) *
US2583385A (en) * 1947-01-11 1952-01-22 Morse Instr Company Automatically operated film winding mechanism
DE2119414C3 (de) * 1971-04-21 1979-08-16 Nixdorf Computer Ag, 4790 Paderborn Auf einem Typenträgerwagen angeordnete Farbbandtransport- und Umschalteinrichtung, insbesondere für Mosaikdruckwerke
IT967080B (it) * 1972-09-01 1974-02-28 Honeywell Inf Systems Dispositivo di inversione automa tica del movimento longitudinale del nastro inchiostrato in macchi ne da scrivere e similari
DE2737096A1 (de) * 1977-08-17 1979-03-01 Siemens Ag Vorrichtung zur vorschubrichtungsumkehr fuer farbbaender
DE3175652D1 (en) * 1980-11-10 1987-01-15 Wheel Dev Ltd Wheel with resilient spokes

Also Published As

Publication number Publication date
YU134183A (en) 1987-02-28
EP0097566A1 (de) 1984-01-04
DE3371883D1 (en) 1987-07-09
FR2528929B1 (fr) 1988-04-08
FR2528929A1 (fr) 1983-12-23
JPS596460A (ja) 1984-01-13

Similar Documents

Publication Publication Date Title
FR2563203A1 (fr) Treuil
FR2601626A1 (fr) Imprimante, cassette de ruban pour imprimante et procede de montage de cassette
FR2488667A1 (fr) Dispositif de changement de vitesse pour bicyclette
EP0097566B1 (de) Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle, vorzugsweise zum Farbbandtransport eines Druckers
FR2524682A1 (fr) Dispositif de changement de mode de fonctionnement pour un appareil d'enregistrement et de reproduction a bande magnetique tel qu'un magnetophone
FR2525112A1 (fr) Enrouleur pour ceinture de securite pour vehicule automobile
EP0023462A1 (de) Stauförderer
FR2737268A1 (fr) Ensemble formant disque amortisseur comportant des ressorts a deplacement radial limite
FR2573350A1 (fr) Rouleau de ruban correcteur pour machine a ecrire
FR2632037A1 (fr) Transmission a variation continue a courroie plate
FR2703626A1 (fr) Agencement et procédé pour éliminer les tâches du cylindre porte-plaque dans une presse lithographique.
FR2476256A1 (fr) Roue de transmission a diametre variable
FR2700531A1 (fr) Dispositif de traction sur câble.
EP1521916A1 (de) Vorrichtung für freilauflager und freilaufscheibe
FR2545462A1 (fr) Dispositif d'entrainement de bobines
WO1998048399A1 (fr) Dispositif d'affichage
FR2615579A1 (fr) Mecanisme de transmission
FR2696660A1 (fr) Dispositif de transport de produits tels que des fruits dans une machine de calibrage automatique.
FR2571167A1 (fr) Dispositif d'affichage a deroulement.
FR2564380A1 (fr) Dispositif de reduction de chocs dans la commande d'encrage d'un preneur d'encre alternatif de presse offset rotative
EP0306428B1 (de) Aufwickelspindel, um das Reibungsdrehmoment zu begrenzen
FR2533327A1 (fr) Systeme a galet d'entrainement pour le transport de films en laboratoires photographiques
WO1996013412A1 (fr) Dispositif de freinage pour vehicules agissant directement sur les pneumatiques du vehicule
WO1996016883A1 (fr) Limiteur de vitesse pour caisses ou palettes diversement chargees, susceptibles de se deplacer par gravite sur un plan incline forme de rouleaux ou galets
EP0043334A1 (de) Einrichtung zum Ein- und Auskuppeln und Bremsen drehgetriebener Elemente

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19831219

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

REF Corresponds to:

Ref document number: 3371883

Country of ref document: DE

Date of ref document: 19870709

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930601

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930618

Year of fee payment: 11

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940607

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950301