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发明授权
CN100581853C 张紧和锁定装置，尤其是用于防滑链的张紧和锁定装置 有权 转让

张紧和锁定装置，尤其是用于防滑链的张紧和锁定装置
摘要：
一种尤其是用于防滑链的张紧和锁定装置，其特征在于，包括：外壳(2)，所述外壳(2)装入一卷轴(10)，牵索围绕所述卷轴(10)卷绕，弹性件(12)，所述弹性件(12)由于从外壳(2)中抽出牵索(8)的结果而可预加载，环形齿轮(18)，所述环形齿轮(18)同轴式与上述卷轴(10)刚性连接，第一保持棘爪(22，52)，所述第一保持棘爪(22，52)活动式接合上述环形齿轮(18)，且在接合时能使卷轴朝第一方向旋转，但防止它朝第二方向旋转，所述第二方向与上述第一方向相反，第二保持棘爪(34，36)，所述第二保持棘爪(34，36)活动式接合上述环形齿轮(18)，且在接合时能使卷轴朝第二方向旋转，但防止它朝第一方向旋转，中间构件(28)，所述中间构件(28)可由用户操纵，并同时作用在上述第一保持棘爪(22，52)和第二保持棘爪上，以便当第一保持棘爪与环形齿轮接合时，第二保持棘爪与环形齿轮分开，反之亦然。
摘要（英）：

A tensioning and locking device, in particular for snow chains, characterised by comprising: - a casing (2) housing a spool (10) about which a traction cable is wound, - elastic means (12) preloadable as a result of withdrawing the cable (8) from the casing (2), - a ring gear (18) coaxially rigid with said spool (10), - a first retention pawl (22, 52) which removably engages said ring gear (18) and which, when engaged, enables the spool to rotate in a first direction but prevents its rotation in a second direction opposite to the preceding, - a second retention pawl (34, 36) which removably engages said ring gear (18) and which, when engaged, enables the spool to rotate in the second direction but prevents its rotation in the first direction, - an intermediate member (28) operable by the user, and acting simultaneously on said first retention pawl (22. 52) and on said second retention pawl such that when the first retention pawl is engaged with the ring gear the second retention pawl is disengaged therefrom and vice versa.

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