WO1990016064A1 - Entrainement a roues d'engrenage pour une cassette de nettoyage utilisee dans des enregistreurs de cassettes - Google Patents

Entrainement a roues d'engrenage pour une cassette de nettoyage utilisee dans des enregistreurs de cassettes Download PDF

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Publication number
WO1990016064A1
WO1990016064A1 PCT/DK1990/000150 DK9000150W WO9016064A1 WO 1990016064 A1 WO1990016064 A1 WO 1990016064A1 DK 9000150 W DK9000150 W DK 9000150W WO 9016064 A1 WO9016064 A1 WO 9016064A1
Authority
WO
WIPO (PCT)
Prior art keywords
cassette
cleaning
engagement
driven gear
coil drive
Prior art date
Application number
PCT/DK1990/000150
Other languages
English (en)
Inventor
Anders Moesgaard
Helge Møller
Original Assignee
Am Kemi A/S
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 Am Kemi A/S filed Critical Am Kemi A/S
Priority to KR1019910701865A priority Critical patent/KR920702788A/ko
Priority to CA002056615A priority patent/CA2056615A1/fr
Publication of WO1990016064A1 publication Critical patent/WO1990016064A1/fr
Priority to NO91914851A priority patent/NO914851L/no
Priority to FI915898A priority patent/FI915898A0/fi

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/41—Cleaning of heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/049—Cassettes for special applications not otherwise provided for

Definitions

  • a gear-wheel drive for a cleaning cassette for use in cassette tape recorders is provided.
  • the present invention relates to a cleaning cassette for cassette tape recorders comprising a cleaning member which upon placing the cassette in the tape recorder is brought into engagement with its recording/reproducing head and which is subjected to a reciprocating cleaning movement across the recording head by means of a pivot arm, one end of which is pivotal about a stationary axis while the other end is connected with the cleaning member, said pivot arm having a slot engaging an eccentric head connected through a transmission device with hub means for engagement with respective ones of the coil drive shafts of the tape recorder in such a manner that the cleaning member by rotation of an arbitrary one of the coil drive shafts of the tape recorder is subjected to said cleaning movement, the transmission device comprising two mutually engaging driven gear-wheels one of which carries the eccentric head.
  • US patent No. 4 716 485 deals with a gear-wheel coupling with two driven gear-wheels, providing a rotational direction for the gear-wheel that is in engagement with the pivot arm, irrespective of which of the coil drive shafts is operable during the playing function in a cassette tape recorder.
  • the above designs provide for obtaining a correct cleaning function irrespective of the orientation of the cleaning cassette when positioned in the tape recorder, but the transmission devices suffer from the drawback that they establish a direct driving connection from the first hub means to the second hub means of the cassette, thereby causing the motor of the tape recorder to perform, through the active coil drive shaft, not only the necessary motive power for the cleaning cassette but also a sufficient motive power for the indispensable co-rotation of the second coil drive shaft of the tape recorder and the transmission devices connected therewith.
  • the object of the invention is to provide a cleaning cassette of the type concerned in which the functional advantage of the latter of the above mentioned known designs is maintained concurrently with obtaining a simpler mounting and a more sturdy design of the transmission device, thereby further compensating more easily for productional tolerances.
  • the driven gear-wheels are arranged so as to be used in a one-way coupling connection with a first and a second pinion, resp., said one-way coupling being provided in that the pinions are individually mounted axially displaceable on a threaded hub means in engagement with a coil drive shaft, thereby allowing displacement between positions in which the pinion is in engagement and out of engagement, resp., with the actual driven gear-wheel.
  • Fig. 1 is a plane view of a cleaning member with an associated transmission device in an embodiment of the cleaning cassette according to the invention
  • Fig. 2 is a sectional view along the lines II-II in Fig. 1,
  • Fig. 3 is a threaded hub means according to the invention
  • Fig. 4 is a plane view of a pinion in Fig. 2
  • Fig. 5 is a sectional view of the pinion along the line V-V in Fig. 4.
  • a cleaning member 1 is mounted in a holder 2 which in a manner not shown, e.g. by guide tracks in the cassette walls is controlled to effect reciprocating movement in the cleaning cassette in the direction shown by arrows 3.
  • This movement causes the cleaning member, e.g. formed as a felt pad moistened with cleaning liquid, to effect a sweeping movement across the recording/reproducing head not shown of the tape recorder and on which the cleaning member is kept abutting by a pressure spring 4.
  • Holder 2 is connected with the free end of a pivot arm, 5 the opposite end of which is pivotally journalled on a pivot pin 6 secured on the cassette.
  • the pivot arm 5 is provided with a slot 7 engaging an eccentric head 8 supported on a driven gear-wheel 14 that is in firm engagement with the second driven gear-wheel 16.
  • the cassette For the purpose of engagement with the coil drive shafts, not shown, of the tape recorder the cassette is provided with two hub means 10 and 11 corresponding to the coil drive shafts in a general tape cassette.
  • Each of the hub means 10 and 11 is provided with an external thread for engagement with pins located internally of the pinions 12 and 13 for axial displacement thereof on hub means 10 and 11, between positions in which pinions 12 and 13 engage or disengage, resp., the driven gear-wheels 14 and 16.
  • hub means 10 or 11 When a hub means 10 or 11 upon placing the cassette in the tape recorder is made to communicate with the effective coil drive shaft thereof, the rotation of hub means 10 or 11 in the usual direction of rotation, shown by arrow 18 or 19, will displace pinion 12 or 13 axially to engage the driven gearwheel 14 or 16, thereby also making eccentric head 8 to rotate so that pivot arm 5 is made to effect a reciprocating pivoting movement about pivot pin 6, thereby actuating cleaning member holder 2 to perform the reciprocating sweeping movement illustrated by arrows 3.
  • the other hub means 11 or 10 is connected to the non-effective coil drive shaft of the tape recorder in such a manner that hub means 11 or 10 stands still. As the corresponding pinion 13 or

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Detergent Compositions (AREA)
  • Transmission Devices (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Automatic Tape Cassette Changers (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

Une cassette de nettoyage destinée à des enregistreurs de cassettes comprend un élément de nettoyage lequel, lorsque l'on place la cassette dans ledit enregistreur de cassette, est amené en contact avec sa tête d'enregistrement/reproduction, et lequel, par l'intermédiaire d'un dispositif de transmission, est relié à une tige d'entraînement effectif de bobines, se trouvant dans ledit enregistreur de cassettes, de manière à donner audit élément de nettoyage, par la rotation de ladite tige d'entraînement de bobine, un mouvement de balayage effectuant un va-et-vient sur la tête magnétique. Ledit dispositif de transmission comprend deux roues d'engrenage entraînées (14, 16) s'engageant l'une dans l'autre, dont une porte la tête excentrique (8) laquelle, au moyen d'un bras de pivot (5), donne audit élément de nettoyage (1) ledit mouvement de balayage à va-et-vient. Lesdites roues d'engrenage entraînées (14, 16) sont agencées de manière à être applicables dans une connexion d'accouplement unidirectionnel, avec des premier et second pignons (12, 13), montés respectivement et individuellement pour pouvoir se déplacer axialement sur un moyeu fileté (10, 11) en contact avec la tige d'entraînement de bobines, permettant ainsi le déplacement entre des positions dans lesquelles les pignons (12, 13) s'engagent dans ladite roue d'engrenage entraînée et quittent cette dernière. Quel que soit celui desdits moyeux (10, 11) qui est relié à ladite tige principale d'entraînement effectif, l'on obtient une fonction de nettoyage correct sans établir, par l'intermédiaire de ladite cassette de nettoyage, aucune connexion d'entraînement audit second moyeu.
PCT/DK1990/000150 1989-06-15 1990-06-14 Entrainement a roues d'engrenage pour une cassette de nettoyage utilisee dans des enregistreurs de cassettes WO1990016064A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019910701865A KR920702788A (ko) 1989-06-15 1990-06-14 카세트 테이프 레코더용의 세정 카세트를 위한 기어 휘일 구동부
CA002056615A CA2056615A1 (fr) 1989-06-15 1990-06-14 Entrainement d'engrenage pour une cassette de nettoyage a utiliser dans un magnetophone a cassette
NO91914851A NO914851L (no) 1989-06-15 1991-12-10 Tannhjuldrev for rensekassett til bruk i kassettbaandopptakere
FI915898A FI915898A0 (fi) 1989-06-15 1991-12-13 Kugghjulsdrift foer en rengoerings- kasett att anvaendas i kasettbandspelare.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK294789A DK163462C (da) 1989-06-15 1989-06-15 Tandhjulsdrev for rensekassette til kassettebaandoptagere
DK2947/89 1989-06-15

Publications (1)

Publication Number Publication Date
WO1990016064A1 true WO1990016064A1 (fr) 1990-12-27

Family

ID=8117458

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1990/000150 WO1990016064A1 (fr) 1989-06-15 1990-06-14 Entrainement a roues d'engrenage pour une cassette de nettoyage utilisee dans des enregistreurs de cassettes

Country Status (9)

Country Link
EP (1) EP0477292A1 (fr)
JP (1) JPH04506128A (fr)
KR (1) KR920702788A (fr)
AU (1) AU635548B2 (fr)
CA (1) CA2056615A1 (fr)
DE (1) DE9090075U1 (fr)
DK (1) DK163462C (fr)
FI (1) FI915898A0 (fr)
WO (1) WO1990016064A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716485A (en) * 1985-03-29 1987-12-29 Recoton Corporation Cartridge-shaped cleaning device with a rotable cleaning assembly
EP0309398A1 (fr) * 1987-09-21 1989-03-29 Manfred Baumann Cassette de nettoyage pour appareils à cassette à bande

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK162665C (da) * 1988-07-08 1992-04-13 Am Kemi As Rensekassette til kasettebaandoptagere

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716485A (en) * 1985-03-29 1987-12-29 Recoton Corporation Cartridge-shaped cleaning device with a rotable cleaning assembly
EP0309398A1 (fr) * 1987-09-21 1989-03-29 Manfred Baumann Cassette de nettoyage pour appareils à cassette à bande

Also Published As

Publication number Publication date
DK163462C (da) 1992-07-20
AU5964590A (en) 1991-01-08
DE9090075U1 (de) 1992-01-30
DK294789D0 (da) 1989-06-15
EP0477292A1 (fr) 1992-04-01
FI915898A0 (fi) 1991-12-13
DK294789A (da) 1990-12-16
AU635548B2 (en) 1993-03-25
CA2056615A1 (fr) 1990-12-16
DK163462B (da) 1992-03-02
KR920702788A (ko) 1992-10-06
JPH04506128A (ja) 1992-10-22

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