Handheld work apparatus

摘要

A handheld work apparatus has a housing with a guide bar affixed thereto. A saw chain is driven along the guide bar which defines a central plane. A drive element for the chain is in a sprocket wheel space delimited by a sprocket wheel cover. The cover has a longitudinal edge which delimits the space adjacent to a first side of the saw chain. The longitudinal edge has a length from an entry region to a discharge opening. Over at least 50% of this length, the longitudinal edge is at a distance (L) to the housing. The distance (L) corresponds to the chain width (a). The distance of the longitudinal edge of the cover increases at the discharge opening in the running direction of the first side. The largest distance (b) of the longitudinal edge to the central plane is at least 110% of the smallest distance (c).

主权项

1. A portable handheld work apparatus comprising:
a housing; a guide bar defining a longitudinal center axis and being mounted on said housing; a saw chain arranged on said guide bar so as to revolve therearound in a running direction; a drive motor; a drive element defining a rotational axis and being arranged between said drive motor and said saw chain; said drive motor being configured to drive said saw chain in said running direction via said drive element; said guide bar further defining an imaginary center plane containing said longitudinal center axis and extending perpendicularly to said rotational axis of said drive element; said saw chain having a chain width (a) measured perpendicularly to said imaginary center plane; said guide bar having a free end remote from said housing and having a redirect region at said free end; said saw chain having a first side running from said redirect region to said drive element and a second side running in said running direction from said drive element to said redirect region; a sprocket wheel cover delimiting a sprocket wheel space accommodating said drive element therein; said sprocket wheel space being configured to provide an entry region to permit said saw chain to pass into said sprocket wheel space and being configured to provide a discharge opening for cut matter; said sprocket wheel cover having a longitudinal edge delimiting said sprocket wheel space next to said first side of said saw chain; said longitudinal edge extending over a predetermined length from said entry region to said discharge opening; said longitudinal edge being at a distance (L) to said housing over at least 50% of said predetermined length with said distance (L) being measured perpendicularly to said imaginary center plane; said distance (L) corresponding at least to said saw chain width (a); said longitudinal edge of said sprocket wheel cover having a section at said discharge opening wherein said longitudinal edge runs inclined to said imaginary center plane of said guide bar and whereat said discharge opening widens in said running direction of said first side of said saw chain; said longitudinal edge having a first location lying at a largest distance (b) to said imaginary center plane and a second location lying at a smallest distance (c) to said imaginary center plane; and, said largest distance (b) to said imaginary center plane being at least 110% greater than said smallest distance (c) to said imaginary center plane.