| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tensioning apparatus for an anti-skid chain to be mounted on a vehicle wheel. <P>SOLUTION: A tensioning strand which can be pulled into the housing is connected within the housing 61 to a winding roll 62 with a ratchet wheel, which winding roll is pretensioned in the winding direction and rotatable about its axis. A ratchet pawl 64 can be moved to the outside at least partially under the influence of centrifugal force during wheel rotation, starting from a release position not in engagement with the ratchet wheel 65 and the tensioning strand is not blocked, causing an engagement of the ratchet pawl 64 in the ratchet wheel 65 and a blocking of the tensioning strand against its tensioning direction. A magnetic holding element 68 cooperates with the ratchet pawl by a magnetic interaction and counteracts deflection of the ratchet pawl from the release position during standstill or slow rotation of the wheel, forming a return force at least in the release position of the ratchet pawl 64. <P>COPYRIGHT: (C)2012,JPO&INPIT |
