Hand-held power tool device such as drilling and/or percussion hammer, comprises a transmission unit, a vent port, and a membrane module having a diaphragm which carries out partial air-permeable closing of the vent port

摘要

The hand-held power tool device (10a) comprises a transmission unit (12a), a vent port (14a), and a membrane module (16a) having a diaphragm (18a) which carries out partial air-permeable closing of the vent port. The membrane is partially made of plastic material. The membrane comprises several pores. The diaphragm comprises a capillary and two layers. The membrane is partially formed as a liquid-repellent structure. The membrane module has a filter unit.