| 摘要 |
A tensioning device for a drive system having a flexible drive element mounted on at least one driven member, the tensioning device including a first tensioning member having a first side, a second side, and a first contact surface for contacting the drive element and a second tensioning member having a first side, a second side, and a second contact surface for contacting the drive element. The tensioning members are secured to the first and second ends of an elongated connecting member, positioning the members in a spaced relationship to one another so that the contact surfaces of the tensioning members are in opposing disposition facing one another. The tensioning members are spaced apart so as to permit the first and second runs of the drive element to pass between the tensioning member contact surfaces. The connecting member holds the tensioning members a fixed distance from one another during operation of the drive system, such that when the tensioning device is in contact only with the drive element, the tensioning device can respond to fluctuations in load on the drive element by moving in a direction parallel to the drive element at the points of contact between the drive element and the tensioning members. The second sides of the tensioning members remain unconnected to provide free access to the drive element therebetween. The connecting member defines at least one longitudinal contour along the length of the connecting member that reinforces the stiffness of the member.
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