Coupling assembly and ratchet locking member for use therein

A coupling assembly includes first and second coupling members, a locking member, and a blocking structure. The locking member may be a strut, a pawl, or the like. The locking member is disposed between the coupling members and is movable between a coupled position and a decoupled position. The coupling position is characterized by abutting engagement of the locking member with each coupling member. The decoupled position is characterized in that the locking member is in non-abutting engagement with at least the first coupling member. A blocking structure is associated with at least one of the first coupling member and the locking member. The blocking structure prevents the locking member from entering the coupled position when rotation of the first coupling member in the first direction relative to the second coupling member is above a predetermined rotational speed, thereby preventing abutting engagement of the locking member with the first coupling member. 一种耦合组件包括第一耦合构件和第二耦合构件、锁定构件和阻挡结构。锁定构件可以是支柱、棘爪等。锁定构件