Patent ID: 7975345

Claim:
Interdental brush with an elongate brush body which comprises a brush member connected to a coupling member adapted for snapping-in in a receiving opening of a brush handle in an operational state, said brush handle having a front side and a rear side, wherein the coupling member has first and second expanding arms which are elastically movable towards each other, and which, in the snapped-in position, have rear ends arranged for freely projecting from the rear side of the brush handle, wherein the coupling member, on its lateral outer side, comprises a snap-in depression in the region of the expanding arms, said depression being delimited by first and second right-angled shoulders extending at right angles to the longitudinal axis of the brush body, said depression having a first depression end formed by the first shoulder, a second depression end formed by the second shoulder, and a depression base laterally inward of said shoulders and extending parallel to the longitudinal axis of the brush body from the first depression end to the second depression end, wherein each expanding arm has a respective outer side comprising a circular-arc-shaped first surface at the rear end of the expanding arm and a second surface extending from the first surface to the first right-angled shoulder parallel to the longitudinal axis of the brush body, wherein the coupling member in the snapped-in operational state is held in the receiving opening of the brush handle in a positive locking fit, wherein the coupling member has a strength such that the coupling member can be detached from the receiving opening only by manually deflecting the at least two expanding arms freely extending from the rear side of the brush handle towards each other, to eliminate the positive locking fit of the coupling member in the receiving opening, and wherein the coupling member comprises a further snap-in groove delimited by first and second axially spaced and radially extending projections, for snap-in engagement with an opening rim of a holding member, the first projection being next to the brush element and comprising first and second sloped surfaces engaging the opening rim when moving the interdental brush with respect to the opening, and wherein the second projection defines, with its radial surface opposed to the brush member, said second right-angled shoulder.