Battery-driven screwdriver with a two-part motor housing and a separate, flanged gear unit
AssigneeRobert Bosch GmbH
InventorsSven Kageler, Ginn Yuh Gan, Abdul Aziz Zulfikar
Life of this patent
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Abstract
A cordless screwdriver, having a housing (12, 18) equipped with a handle (14), having an in particular permanently installed rechargeable battery (40), and having a transmission (72), is particularly compact, lightweight, and strong because the transmission (72), embodied in the form of a sun-and-planet gear, is simply inserted into a hollow, cylindrical transmission housing (18) and can be secured in position in it by an axial securing plate (62); the transmission housing (18) is also provided with an internal gearing and serves as the sun gear as well as being integrated into the reinforcing structure of the cordless screwdriver (10).
Claims14
A cordless screwdriver having a motor housing (12) that is composed of casing halves (16, 17), is equipped with a rechargeable battery (40), and is adjoined by a transmission housing (18) containing a transmission (72) equipped with an output spindle (20),
- wherein the casing halves (16, 17) of the motor housing (12), solely with their c-shaped ends adjoining the transmission housing (18), in particular with an annular counterpart bead (53) embossed on the inside and an annular housing groove (54), embrace in clamp-like fashion and extend through axial, tab-like extensions (60), in particular ones embodied in the form of axial teeth provided with annular counterpart profiles, of the transmission housing (18), and in particular extend with protrusions, preferably pedestals (50), between the extensions (60) and hold the transmission housing (18) in a centered, rotationally fixed manner without play.
Dependencies are inferred from the claim text.