초록 ▼

A hand power tool has a machine housing, a drive motor accommodated in the machine housing, a drive train connected with the drive motor and provided with a tool receptacle for rotation of a tool insertable in the tool receptacle, a detecting device for detecting an uncontrolled operation of the han

A hand power tool has a machine housing, a drive motor accommodated in the machine housing, a drive train connected with the drive motor and provided with a tool receptacle for rotation of a tool insertable in the tool receptacle, a detecting device for detecting an uncontrolled operation of the hand power tool by detecting a blocking of the tool in a workpiece with a resulting impact-like turning of the machine housing, a blocking device provided for the drive train and releasable by the detecting device, the locking device having a locking toothing arranged in the drive train and a blocking member movably supported in the machine housing and form-lockingly engagable in the locking toothing so as to non-rotatably fix the drive train relative to the machine housing, the detecting device being formed so that it produces an electrical release signal in an uncontrolled operation, the blocking device being releasable by the electrical release signal, and further has electromagnet device actuatable by the release signal so that the locking member is engagable by the electromagnet device into the locking toothing.

대표청구항 ▼

[ What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims:] [1.] A hand power tool, comprising a machine housing; a drive motor accommodated in said machine housing; a drive train connected with said drive motor and provided with a tool receptacle for

[ What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims:] [1.] A hand power tool, comprising a machine housing; a drive motor accommodated in said machine housing; a drive train connected with said drive motor and provided with a tool receptacle for rotation of a tool insertable in said tool receptacle; detecting means for detecting an uncontrolled operation of the hand power tool by detecting a blocking of the tool in a workpiece with a resulting impact-like turning of said housing; blocking means provided for said drive train and releasable by said detecting means, said blocking means having a locking toothing arranged in said drive train and a blocking member movably supported in said machine housing and form-lockingly engageable in said locking toothing so as to non-rotatably fix said drive train relative to said machine housing, said detecting means being formed so that said detecting means produces an electrical release signal in an uncontrolled operation, said blocking means being releasable by said electrical release signal; and electromagnet means actuatable by said release signal so that said blocking member is engageable by said electromagnet means into said locking toothing.