| 摘要 |
In brake-linkage readjustment equipment with non-self-locking thread spindle/nut screwed connection, a pretensioning spring (16) is supported on a coupling ring (24) which is guided in a non-rotatable fashion. The coupling ring (24) is mounted so as to be movable in the axial direction to a limited degree on a guide ring (17) which is displaceable on the threaded spindle (15) and it is stressed, counter to the direction of action of the pretensioning spring (16), by a switching spring (25) via an axial bearing (26), which switching spring (25) attempts to close a rotary coupling (28, 29) arranged between the coupling ring (24) and the guide ring (17). The guide ring (17) is supported in the direction of action on the pretensioning spring (16) via a second rotary coupling (18) on a second nut (19) which is screwed to the threaded spindle (15). A fixed stop (21) is capable of supporting the second nut (19) via an axial bearing (20) and of supporting the coupling ring (24) with concomitant opening of the second rotary coupling (18), in each case counter to the pretensioning spring (16). <IMAGE>
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