FASTENING STRUCTURE FOR ENGINE ASSEMBLY Russian patent published in 2014 - IPC B25F5/00 H02K7/14 

FIELD: engines and pumps.

SUBSTANCE: fastening structure for an engine assembly (10), providing for attachment of the engine assembly (10), comprising a commutator motor and a brush-holding unit (20), which holds the brushes in a movable sliding contact with a commutator of the commutator motor, to a tubular body (1) of a mechanical tool, comprises a seat (5), having a bottom made in a body (1), the design of which makes it possible to install the engine assembly (10) in it with the brush-holding unit (20), facing downwards. A receiving section (6) is made in the seat (5), the design of which is intended for positioning of the brush-holding unit (20) as it engages with it. A thrust section (26) is arranged on a stator (11) of the commutator motor and/or on the brush-holding unit (20) and is designed for engagement with the appropriate brush-holding unit (20) or the stator (11), adjoining it in the assembly for provision of relative positioning of the stator (11) and the brush-holding unit (20). A fastening element (8, 9) is inserted at the open side of the body (1) for engagement with the stator (11) and fixation to the body (1). Besides, the engine assembly (10) inside the seat (5) so that the brush-holding unit (20) is in contact with the receiving section (6), and the stator (11) and the brush-holding unit (20) contact with each other via the thrust section (26). At the same time the engine assembly (10) is placed and fixed between a fastening element (8, 9) and the receiving section (6) with the help of the fastening element (8, 9).

EFFECT: facilitation of installation of an engine assembly and increased stiffness of a support.

16 cl, 13 dwg