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    • 12. 发明公开
    • BÜRSTENKOPF FÜR EINE ZAHNBÜRSTE
    • 刷头换一次牙刷
    • EP1478302A1
    • 2004-11-24
    • EP02806876.5
    • 2002-11-19
    • Braun GmbH
    • KRESSNER, GerhardSTOLPER, Michael
    • A61C17/34
    • A61C17/349A61C17/34
    • The invention relates to a brush head for a toothbrush, which comprises a handle with a drive for said brush head. Said brush head has an, in particular, disc-shaped or plate-shaped bristle support, which supports a bristle array and which is displaceably mounted on a brush head support, and has connecting means for coupling to the drive of the toothbrush situated in the handle. The bristle support is subdivided into a number of bristle support segments that can move relative to one another. The brush head additionally comprises drive means that alter the position of the bristle support segments relative to one another according to the position of the entire bristle support. According to the invention, the drive means, which cause the bristle support segments to move relative to one another, comprise a curved control surface and an engaging element that interacts therewith, both of which being respectively provided on the brush head support and on at least one bristle support segment, in order to correspondingly displace this at least one bristle support segment when the bristle support moves about the movement axis thereof. The basic movement of the entire bristle support relative to the brush head support is utilized, via a cam surface, for additionally driving individual bristle support segments so that these individual bristle support segments execute an additional movement that is superimposed on the basic movement of the bristle support.
    • 16. 发明公开
    • HANDTEIL EINER ELEKTRISCHEN ZAHNBÜRSTE SOWIE LADETEIL HIERFÜR
    • 电动牙刷的手柄部
    • EP1959859A2
    • 2008-08-27
    • EP06791606.4
    • 2006-08-22
    • Braun GmbH
    • KRESSNER, GerhardHAAS, Martin
    • A61C17/22
    • A61C17/225A61C17/22A61C17/224
    • The invention relates to a handpiece of an electric toothbrush having a housing in which a drive unit is received. Said housing has a front or rear housing opening that can be closed by a cover in a preferably moisture- and liquid-proof manner. Snap-in means are provided on the housing and/or the cover for snap-locking the cover on the housing. The aim of the invention is to provide a combination of snap-in and threaded engagement for releasing the snap-in connection between the cover and the housing. For this purpose, at least one draft taper or curve, increasing in relation to the longitudinal axis of the housing, is provided on the housing and/or the cover. The cover can be axially lifted using said draft taper by twisting it about the longitudinal axis of the housing and the snap-in means are released. The draft taper or curve allows a threaded engagement of the cover with the housing and effects, for releasing the snap-in connection, a translation of a rotational movement of the cover into an axial movement of the same in a screw-on type manner. The snap-in means can be released in a power-saving manner by twisting the cover and they are forced to unlock by way of a restricted guidance having a threaded or curve engagement. The combination of snap-in connection of the cover and the housing and the draft taper or curve allowing a threaded or curve engagement for detaching the cover by twisting the same allows for a firm connection between the cover and the housing transmitting even high cleaning forces while facilitating a comparatively power-saving unlocking of the snap-in connection.