Festool Gmbh

Festool Group Gmbh & Co. Kg

Florian Goos

Volker Barth

Benjamin Allgaier

Bernd Walter

Hans-Dieter Braun

Hermann Abele

A drive motor for a suction tool () or a machine tool in the form of a hand-held power tool () or a semi-stationary machine tool. The drive motor () has a stator () with an excitation coil assembly () and a rotor () with a motor shaft () which is rotatably mounted on the stator or relative to the stator () about a rotational axis (D) by means of a bearing assembly (A), and the drive motor () has a connection device () for electrically connecting the drive motor to an energizing device () for energizing the excitation coil assembly (). The connection device () has a main part () for securing to the stator () and a receiving arm () which protrudes from the main part (), a conductor receiving area () being formed between the main part and the receiving arm for at least one electric coil conductor () of an excitation coil () of the excitation coil assembly (). The connection device () has a connection contact region () for electrically connecting a connection line () for connecting to the energizing device ().

Drive motor with a connection device

A drive motor for a suction device () or a machine tool in the form of a handheld power tool () or a semi-stationary machine tool, wherein the drive motor () includes a stator () having an excitation coil assembly () and a rotor () having a motor shaft (), which is rotatably mounted around a rotational axis (D) on the stator or with respect to the stator () by means of a bearing assembly (A) and passes through a shaft through-opening () of a laminated core () which is held on the motor shaft () and is electrically insulated from the motor shaft (). It is provided that an insulation sleeve () is arranged between the motor shaft () and the laminated core (), which is inserted into the shaft through-opening () and has a socket () with an insertion opening (A) through which the motor shaft () is plugged into the socket along an insertion axis (S).

Drive motor with an insulating housing

A drive motor for a suction device or a machine tool in the form of a handheld power tool or a semi-stationary machine tool, wherein the drive motor includes a stator having an excitation coil assembly and a rotor having a motor shaft, which is rotatably mounted around a rotational axis on the stator or with respect to the stator by means of a bearing assembly, wherein the rotor is received in a rotor receptacle of the stator, the inner circumference of said receptacle having grooves which extend along longitudinal axes that run parallel to the rotational axis and have insertion openings which are open towards the rotational axis and are provided for inserting excitation coils of the excitation coil assembly and are closed by groove covers, wherein the groove covers are in engagement with the engage-behind contours of the grooves at their opposite longitudinal sides, each of which extends along the longitudinal axis of the respective groove, said longitudinal axis being transverse to a transverse spacing between the longitudinal sides, and the groove covers have a wall section for covering the groove between the longitudinal sides.

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Stutensee, Germany

Florian Goos