초록 ▼

A dust removal unit (1) includes an adjustable axial depth stop (5) for an at least partially rotatable hand tool device (2) with a radially displaced, rotationally fixed, telescopable, axially limited movable suction tube assembly with a suction tube (4) running parallel to the axis (A) of the tool

A dust removal unit (1) includes an adjustable axial depth stop (5) for an at least partially rotatable hand tool device (2) with a radially displaced, rotationally fixed, telescopable, axially limited movable suction tube assembly with a suction tube (4) running parallel to the axis (A) of the tool device (2) and coupled at one end to a suction head (3). The suction tube (4) includes an axially extending pleated bellows (6).

대표청구항 ▼

1. A dust removal unit for an at least partially rotatable hand tool device (2) having a working axis (A) comprises a suction tube assembly including a suction tube (4) having an axis (B) radially offset from and parallel to said working axis (A), said suction tube (4) is telescopable to a limited a

1. A dust removal unit for an at least partially rotatable hand tool device (2) having a working axis (A) comprises a suction tube assembly including a suction tube (4) having an axis (B) radially offset from and parallel to said working axis (A), said suction tube (4) is telescopable to a limited axial extent, a suction head (3) encircling said working axis (A) and connected to a first end of said suction tube (4), said dust removal unit includes a depth stop (5) axially adjustable relative to said axis (B) of said suction tube (4), said suction tube (4) comprises a pleated bellows (6) extending axially along and encircling said axis (B) said suction tube assembly comprises a telescopable inner part (11) encircling said suction tube (4) and axially movable to a limited extent said inner part (11) has a substantially circular cross-section and an axially extending radially outer toothed surface member (12), with the toothed surface thereof facing radially outwardly and with said depth stop (5) axially displaceable along and lockable with the toothed surface member (12).2. A dust removal unit, as set forth in claim 1, wherein said suction tube (4) is spring biased in the axial direction.3. A dust removal unit, as set forth in claim 1, wherein said pleated bellows (6) is internally spring supported.4. A dust removal unit, as set forth in claim 1, wherein said suction head (3) comprises brushes radially inwardly directed toward said working axis (A).5. A dust removal unit, as set forth in claim 1, wherein said suction head (3) and said suction tube assembly each have a planar surface arranged to engage a surface (8) to be worked by the hand tool device (2), said suction tube has a second end spaced axially from the first end thereof and arranged to convey dust into a dust container (20), and a suction wheel (17) connected to said dust container (20) and in operative connection with a shaft (M) of said hand tool device (2).