A treating device for treating the video head and/or...

G - Physics – 11 – B

Patent

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Details

G11B 23/04 (2006.01) G11B 5/41 (2006.01) G11B 5/53 (2006.01)

Patent

CA 2396645

A cleaning device (1) for cleaning a video head and drum of a video recorder and/or playback unit comprises a housing (6) within which a carrier arm (28) is pivotally mounted and carries a cleaning brush (29) and is pivotal from a retracted position (28) within the housing (6) to a treating position with the cleaning brush (29) in cleaning engagement with the drum (2) under the action of a torsion spring (33). A retaining rib (48) extending inwardly from a lid (20) of the housing (6) acts on the cleaning brush (29) for retaining the carrier arm (28) and the cleaning brush (29) in the retracted position. An abutment edge (50) on the carrier arm (28) is positioned so that as the housing (6) is being lowered into a cassette receiving area (5) of the video recorder and/or playback unit, the abutment edge (50) is located behind a tape withdrawal roller (3) prior to the retaining rib (48) disengaging the cleaning brush (29). Accordingly, the carrier arm (28) and the cleaning brush (29) are retained in the retracted position by the tape withdrawal roller (3) until the tape withdrawal roller (3) commences to move outwardly of the cassette receiving area (5), thus preventing any danger of the carrier arm and cleaning brush becoming entangled with the tape withdrawal roller (3) or any other tape withdrawal rollers until the tape withdrawal rollers have moved outwardly of the cassette receiving area (5).

L'invention concerne un dispositif (1) de nettoyage permettant de nettoyer la tête et le tambour vidéo d'un magnétoscope et/ou d'un appareil de reproduction. Le dispositif comporte un logement (6) dans lequel un bras support (28), monté pivotant, porte une brosse (29) de nettoyage, et pivote entre une position rétractée (28) dans le logement (6) et une position de traitement dans laquelle la brosse (29) de nettoyage est en contact de nettoyage avec le tambour (2) sous l'action d'un ressort (33) de torsion. Une nervure (48) de retenue s'étendant vers l'intérieur depuis un couvercle (20) du logement (6) agit sur la brosse (29) de nettoyage de manière à retenir le bras support (28) et la brosse (29) de nettoyage en position rétractée. Un bord (28) de butée situé sur le bras support (28) est positionné de sorte que le logement (6) est abaissé dans une zone (5) de réception de cassette du magnétoscope et/ou de l'appareil de reproduction. Le bord (50) de butée est situé derrière un cylindre (3) de retrait de bande avant que la nervure (48) de retenue se dégage de la brosse (29) de nettoyage. En conséquence, le bras support (28) et la brosse (29) de nettoyage sont retenus en position rétractée par le cylindre (3) de retrait de bande jusqu'à ce que le cylindre (3) de retrait de bande commence à sortir de la zone (5) de réception de cassette, ce qui permet d'éviter tout risque d'accrochage du bras support et de la brosse de nettoyage avec le cylindre (3) de retrait de bande, ou avec tout autre cylindre de retrait de bande, jusqu'à ce que les cylindres de retrait de bande soient sortis de la zone (5) de réception de cassette.

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