Mechanically operated fuse for gyratory missiles |
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| 申请号 | US29229372 | 申请日 | 1972-09-26 | 公开(公告)号 | US3882782A | 公开(公告)日 | 1975-05-13 |
| 申请人 | MEFINA SA; | 发明人 | SIMMEN ROBERT; | ||||
| 摘要 | A fuse provided with safety means operative before firing and during the beginning of the flight of the missile, said fuse including an escapement controlling a toothed sector which is adapted after a lapse of time defined by the escapement to shift a primer carrier into an intermediate position for which centrifugal force urges said carrier into its operative position corresponding to alignment of the actual primer between the striker and the detonator. | ||||||
| 权利要求 | 1. A fuse for a gyratory missile comprising inside of a hollow body a detonator (14), a striker (9) adapted to move axially of the fuse towards said detonator, a primer-carrier (22), a pivot member (21) whose axis is located parallel with the path of movement of a striker and on which said primer-carrier (22) is pivotally mounted, said primer-carrier (22) movable out of an inoperative position and into an operative position under the action of centrifugal force, the center of gravity (34) of said primer-carrier (22) when inoperative, lying on the side of a straight line connecting the axis of rotation of the fuse with the pivot member (21) of the primer-carrier (22), the effect of centrifugal force tending to maintain the primer-carrier (22) in inoperative position, a primer (12) extending through said carrier along a line parallel with said primer-carrier axis and assuming an operative position between the striker (9) and the detonator (14) when the primer-carrier (22) assumes its operative position, a spring (33) releasably holding the primer-carrier in its inoperative position, a movable member (23) mounted on said primer-carrier pivot member above said primer-carrier (22) and in engagement therewith, said movable member (23) being shiftable centrifugally to thereby cause the primer-carrier (22) to enter a position for which the center of gravity thereof lies on the other side of said straight line and the primer-carrier is urged by centrifugal force into its operative position, and an escapement mechanism (29) cooperating with said movable member (23) to slow down its movement towards its centrifugally instigated position. 2. A fuse as claimed in claim 1, wherein the movable member comprises a sector shaped member and said fuse includes elastic means holding said sector shaped member against motion until centrifugal force starts acting. 3. A fuse as claimed in claim 1, wherein the movable member engages the primer-carrier through a connection providing an idle motion at the start and comprising a projection carried by one of said parts, said projection engaging a slot in the other part. 4. A fuse as claimed in claim 1, wherein the movable member is provided with a peripheral series of teeth distributed along a circle coaxial with the axis of said member and the escapement mechanism includes an escape wheel and a pinion coaxially rigid with said wheel and meshing with said series of teeth to slow down the movement of the movable member. 5. A fuse as claimed in claim 1, wherein the movable member is provided with a peripheral series of teeth distributed along a circle coaxial with the axis of said member and the escapement mechanism includes an escape wheel and a pinion coaxially rigid with said wheel and meshing with said series of teeth to slow down the movement of the movable member, the primer-carrier being also provided with a peripheral series of teeth distributed along a circle coaxial with the axis of said carrier and meshing with said piniOn to slow down the movement of the carrier. 6. A fuse as claimed in claim 1, wherein the movable member is adapted to pivot centrifugally around the pivot member of the primer-carrier in superposed relationship with the latter and held against motion by said spring until centrifugal force starts acting, said movable member being provided with an arcuate slot concentric with its pivotal axis and with a series of teeth extending over a limited arc concentric with said axis, said escapement including an escape wheel and a pinion interconnecting said escape wheel with said teeth to slow down the movement of the movable member and said primer-carrier is rigid with a projection engaging the arcuate slot, whereby the slot in the movable member moves first under the action of centrifugal force over said projection at a speed controlled by the pinion connected with the escape wheel, following which the teeth disengage the pinion and the thus released member urges the primer-carrier into its operative position. |
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