| 摘要 |
A belt tensioning device for a continuous belt drive. The device includes a torsion spring assembly ( 20 ) with a longitudinal axis (A<SUB>2</SUB>) and with at least one torsion bar or torsion tube ( 32 ). The torsion spring assembly ( 20 ) can be clamped axially and in a rotationally fast way into a rack. A tensioning arm ( 19 ), at one end, is arranged at the torsion spring assembly ( 20 ) so as to be aligned approximately radially relative to the longitudinal axis (A<SUB>2</SUB>). A tensioning roller ( 15 ) is rotatably fixed at the other end of the tensioning arm ( 19 ). The axis of rotation (A<SUB>1</SUB>) of the tensioning roller ( 15 ) extends substantially parallel relative to the longitudinal axis (A<SUB>2</SUB>) of the torsion spring assembly ( 20 ), and the tensioning arm ( 19 ) can be resiliently supported relative to the rack so as to oscillate around the longitudinal axis (A<SUB>2</SUB>).
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