FLEXIBLE LOCKING-AND-SEALING UNIT LAVR 2000 Russian patent published in 2002 - IPC

FIELD: all fields of industries where locking the object is effected by means of length of cable. SUBSTANCE: proposed unit includes length of cable which is passed via through passage of body and is locked there by means of several spring-loaded rollers located in mounting seats available in body. Mounting seats for rollers are made in form of two longitudinal slots inclined relative to through passage of body on either side of two diametrically opposite sides of through passage of body. Slots may be communicated with cavity of through passage of body; they are provided with thrust end faces which are slightly shifted relative to each other and relative to inlet hole of body. Angles of inclination of longitudinal slots are directed towards inlet hole of body. Spring-loaded rollers are received by slots for rotation around their own axes and motion along slots in locking; they may rest against thrust end surfaces of slots by their lateral surfaces in case of ill-intentioned attempt to pull cable out of body. Lateral surfaces of one slots whose thrust end surface is located at greater distance from inlet hole of body are flat, rectilinear and parallel relative to each other and lateral surfaces of other slot whose thrust end surface of located closer to inlet hole of body are flat; they consist of two parts: one part of second slot which has thrust end surface is located at angle relative to second part of their slot; this angle is greater as compared with angle at which part of slot not provided with thrust end surfaces is located relative to longitudinal axis of through passage of body, thus ensuring bend of slot directed more steeply relative to through passage of body. External lateral surface of each roller is made in form of helical surface or is formed by alternating circular pointed projections and recesses whose planes of cross-sections are parallel relative to each other and are inclined. Proposed unit is provided with two pushers; each pusher is engageable with lateral surface of respective roller on one side and with spring loading the roller on other side. EFFECT: enhanced reliability of locking; enhanced power characteristics and reduced overall dimensions. 36 cl, 10 dwg