초록 ▼

A latch having a multiple function prevailing-torque mechanism which facilitates engagement and disengagement of the drawbolt and the strike of the latch and provides a simplified construction enabling ease of assembly and adjustment, with the prevailing-torque mechanism serving to retain the compon

A latch having a multiple function prevailing-torque mechanism which facilitates engagement and disengagement of the drawbolt and the strike of the latch and provides a simplified construction enabling ease of assembly and adjustment, with the prevailing-torque mechanism serving to retain the component parts in assembled arrangement and in appropriate adjustment. A further latch arrangement includes a positive lock which serves to retain the actuating lever of the latch in a stowed or latched location.

대표청구항 ▼

A latch of the type having a latch member to be carried by a first part and a strike to be carried by a second part for latching engagement with the latch member to secure together the first and second parts, said latch comprising: a latch base; means for affixing the latch base to the first part: a

A latch of the type having a latch member to be carried by a first part and a strike to be carried by a second part for latching engagement with the latch member to secure together the first and second parts, said latch comprising: a latch base; means for affixing the latch base to the first part: an actuating lever including a pair of lever arms extending longitudinally generally parallel to one another and spaced apart laterally; means for mounting the actuating lever on the latch base for pivotal movement between first and second locations relative to the latch base; a drawbolt; means for mounting the drawbolt on the actuating lever for swinging movement relative to the actuating lever between a first position, wherein the drawbolt is positioned relative to the actuating lever for latching engagement with the strike when the actuating lever is in the first location, and a second position, wherein the drawbolt is positioned relative to the actuating lever for disengagement from the strike when the actuating lever is in the second location and away from the strike when the actuating lever is in the first location, the means for mounting the drawbolt on the actuating lever including a shaft extending laterally between the lever arms and journalled for rotation therein, the shaft including a threaded aperture, the drawbolt being carried by the shaft, the drawbolt extending longitudinally from the shaft and being spaced laterally from at least one lever arm, the drawbolt including a threaded portion engaged in the threaded aperture for selective longitudinal movement of the drawbolt relative to the shaft; and prevailing-torque means between the drawbolt and the actuating lever for holding the drawbolt against swinging movement relative to the actuating lever such that swinging movement between the first and second positions will be enabled only upon overcoming a given prevailing torque, the prevailing-torque means including at least one friction element located on the shaft between the drawbolt and the one lever arm for exerting a frictional force to establish the given prevailing torque, whereby pivotal movement of the actuating lever from the first location to the second location when the drawbolt is engaged with the strike will enable movement of the drawbolt relative to the actuating lever from the first position to the second position, against the given prevailing torque, and pivotal movement of the actuating lever from the second location toward the first location, with the drawbolt held in the second position by the prevailing-torque means, will withdraw the drawbolt from the strike, the friction element engaging the drawbolt to establish a further prevailing torque tending to retain the drawbolt in a selected longitudinal position relative to the shaft.