SE463637B

SE463637B - MECHANISM FOR AN AMMUNITION UNIT

Info

Publication number: SE463637B
Application number: SE9000062A
Authority: SE
Inventors: G Karlstedt
Original assignee: Affarsverket Ffv
Priority date: 1990-01-09
Filing date: 1990-01-09
Publication date: 1990-12-17
Also published as: EP0437871B1; DE69010879D1; DE69010879T2; EP0437871A3; SE9000062D0; SE9000062A; EP0437871A2

Description

463 10 15 20 25 30 35 6 337 hänvisning till bifogad ritning, som visar en föredragen utföringsform av uppfinningen. 463 10 15 20 25 30 35 6 337 reference to the accompanying drawing, which shows a preferred embodiment of the invention.

Figur 1 visar ett tvärsnitt av ett parti av en mekanism säkrat tillstånd. figur 1, men med mekanismen i enligt uppfinningen i Figur 2 visar samma tvärsnitt som i armerat tillstånd. Figur 3 visar ett partiellt tvärsnitt längs linjen III-III i figur 4 av en alternativ utfö- ringsform av den i figur 2 visade mekanismen. Figur 4 visar mekanismen enligt figur 2 i ett Läge, när åter- säkring av mekanismen är påbörjad. Figurerna 5-7 visar ett snitt längs Linjen V-V i figur 1, VI-VI i figur 2 respek- tive VII-VII i figur 4.Figure 1 shows a cross section of a portion of a mechanism secured condition. figure 1, but with the mechanism in according to the invention in Figure 2 shows the same cross section as in reinforced condition. Figure 3 shows a partial cross-section along the line III-III in Figure 4 of an alternative embodiment of the mechanism shown in Figure 2. Figure 4 shows the mechanism according to Figure 2 in a Position, when re-securing of the mechanism has begun. Figures 5-7 show a section along the line V-V in Figure 1, VI-VI in Figure 2 and VII-VII in Figure 4, respectively.

FÖREDRAGEN UTFÖRINGSFORM I figur 1 visas ett parti av ett hus 1, t ex ett hölje för en stridsvagnsmina, som inrymmer en mekanism enligt upp- finningen. Mekanismen innefattar en delvis visad rörlig del 2 ingående i en ej visad tidsmekanism, vilken del 2 kan ha formen av rotor, t ex utgörande ett sprängkapselhus med en sprängkapsel, som vid ett förutbestämt vridnings- läge (armerat läge) hos språngkapselhuset är införd i en tändkedja pâ allmänt känt och därför ej visat sätt. Meka- nismen enligt uppfinningen innefattar även ett huvudsak- ligen lângsträckt armeringsorgan 3, som är axiellt rörligt, mot verkan av en spiralfjäder 4, nedan benämnd returfjäder, från ett i figur 1 visat, säkrat läge till ett i armeringsorganet 3 ingrepp med en motsvarande urtagning 5 figur 2 visat, armerat läge. I det säkrade läget gör i den rörliga delen 2, så att denna kvarhâlles fixerad i det i inspänd mellan en urtagning 6 i figur 1 visade, säkrade läget. Returfjädern 4 är armeringsorganet och en urtagning 7 i huset 1. Ett av en ej visad motor pâverkbart änden av en gängad huset 1. förbunden med arme- kugghjul 8 är stelt förenat med ena spindel 9, som är vridbart lagrad i Spindeln 9 är via ett gängförband 10-12 operativt ringsorganet 3, varigenom en roterande rörelse hos spin- 10 15 20 25 30 35 Cf\ (Jxl \q 465 deln 9 överför en axiell rörelse till armeringsorganet 3.PREFERRED EMBODIMENT Figure 1 shows a portion of a housing 1, for example a housing for a tank mine, which houses a mechanism according to the invention. The mechanism comprises a partially shown movable part 2 included in a time mechanism (not shown), which part 2 may be in the form of a rotor, for example constituting a detonator housing with an detonator, which at a predetermined rotational position (reinforced position) of the detonator housing is inserted into a ignition chain in a generally known and therefore not shown manner. The mechanism according to the invention also comprises a substantially elongate reinforcing member 3, which is axially movable, against the action of a coil spring 4, hereinafter referred to as return spring, from a secured position shown in figure 1 to an engagement in the reinforcing member 3 with a corresponding recess Figure 2 shows, reinforced position. In the secured position, in the movable part 2, so that it is retained fixed in the secured position shown in clamped between a recess 6 in Figure 1. The return spring 4 is the reinforcing member and a recess 7 in the housing 1. An end of a threaded housing 1 which can be actuated by a motor (not shown) connected to arm gear 8 is rigidly connected to one spindle 9, which is rotatably mounted in the spindle 9 is via a threaded connection 10-12 operatively the ring member 3, whereby a rotating movement of the spinneret Cf \ (Jxl \ q 465 part 9 transmits an axial movement to the reinforcement member 3.

Gängförbandet består dels av spindelns 9 gänga, dels av ett medbringarorgan i form av en medbringarplåt 10.The threaded connection consists partly of the thread of the spindle 9 and partly of a carrier member in the form of a carrier plate 10.

Medbringarplâten 10 är i en ände vridbart lagrad kring en axel 11, som är lagrad i armeringsorganet 3. Medbringar- plåten 10 har i en andra ände en gängprofil 12 motsvarande gängprofilen hos spindelns gänga. I säkrat Läge, figur 1, häller en bladfjäder 13, nedan benämnd styrfjäder, med- bringarplâtens gängprofil 12 i ingrepp med spindelns 9 gänga. I detta Läge pressar styrfjädern 13 medbringar- plâten 10 mot ett stopporgan 14 (se figur 5) i armerings- organet 3. Returfjädern 4 och styrfjädern 13 bildar således âterföringsorgan för âterföring av armerings- organet 3 från armerat till säkrat läge vid önskad âtersäkring av mekanismen.The carrier plate 10 is rotatably mounted at one end about a shaft 11, which is mounted in the reinforcing member 3. The carrier plate 10 has at a second end a thread profile 12 corresponding to the thread profile of the thread of the spindle. In the secured position, figure 1, a leaf spring 13, hereinafter referred to as guide spring, pours the threaded profile 12 of the carrier plate into engagement with the thread of the spindle 9. In this position the guide spring 13 presses the carrier plate 10 against a stop means 14 (see figure 5) in the reinforcing member 3. The return spring 4 and the guide spring 13 thus form return means for returning the reinforcing means 3 from reinforced to secured position at desired reassurance of the mechanism .

Ingreppet mellan medbringarplâtens gängprofil 12 och spindelns 9 gänga är dimensionerat att ge en sådan frik- tion mellan medbringarplåten och spindeln under dennas vridning i en första rotationsriktning, se pilen 15 i figur 6, att ett vridmoment erhålles på medbringarplâten, som strävar att hålla kvar medbringarplâten 10 i ett mycket fast ingrepp med spindeln 9.The engagement between the threaded profile 12 of the carrier plate and the thread of the spindle 9 is dimensioned to give such a friction between the carrier plate and the spindle during its rotation in a first direction of rotation, see arrow 15 in Figure 6, that a torque is obtained on the carrier plate. 10 in a very firm engagement with the spindle 9.

Mekanismens funktion är följande.The function of the mechanism is as follows.

Vid osäkring roteras spindeln 9 i pilens 15 riktning (figur 6) med hjälp av den med denna kopplade ovannämnda, ej visade motorn via kugghjulet 8. Medbringarplåtens gängprofil 12 fungerar nu som mutter och flyttar sig axiellt utefter spindeln 9. Armeringsorganet 3 följer med och spänner samtidigt returfjädern 4, så att energi för en eventuell senare återsäkring lagras i denna. Friktionen mellan medbringarplâten 10 och spindeln 9, ger som antytts ovan, ett vridmoment på medbringarplâten, vilken därigenom hålls kvar i ingrepp med spindeln. Armeringsorganets 3 10 15 20 25 30 35 Läge avkänns i en förutbestämd punkt av sin bana medelst ej visade avkänningsorgan, och vid fullbordad armerings- rörelse (figur 2) stannas_den ej visade motorn.In case of insecurity, the spindle 9 is rotated in the direction of the arrow 15 (figure 6) by means of the above-mentioned motor, not shown, via the gear 8. The thread profile 12 of the carrier plate now acts as a nut and moves axially along the spindle 9. The reinforcement member 3 follows and clamps at the same time the return spring 4, so that energy for a possible later reinsurance is stored in it. The friction between the carrier plate 10 and the spindle 9, as indicated above, gives a torque to the carrier plate, which is thereby retained in engagement with the spindle. The position of the reinforcing member 3 10 15 20 25 30 35 is sensed at a predetermined point of its path by means of sensing means (not shown), and upon completion of the reinforcing movement (figure 2) the motor (not shown) is stopped.

Om âtersäkring av mekanismen skall ske, körs motorn med omkastad rotationsriktning, se pilen 15 i figur 7, ett Litet stycke. Friktion mellan medbringarplâten 10 och spindeln 9 ger nu medbringarplâten ett vridmoment, som vrider denna ur ingrepp med spindeln (se figurerna 4 och 7). Armeringsorganet 3 är nu helt frikopplat från spindeln och förs av returfjädern 4 tillbaka till ingrepp med den rörliga delen 2, dvs till det i figur 1 visade, säkrade läget. Styrfjädern 13 âterför samtidigt medbringarplâten 10 i ingrepp med spindeln 9. Mekanismen är därmed âter- ställd till startläget.If the mechanism is to be re-secured, the motor is driven in the reverse direction of rotation, see arrow 15 in figure 7, a small section. Friction between the drive plate 10 and the spindle 9 now gives the drive plate a torque which rotates it out of engagement with the spindle (see Figures 4 and 7). The reinforcing member 3 is now completely disengaged from the spindle and is moved by the return spring 4 back into engagement with the movable part 2, i.e. to the secured position shown in figure 1. The guide spring 13 simultaneously returns the carrier plate 10 in engagement with the spindle 9. The mechanism is thus reset to the starting position.

I ett alternativt utförande, är en kil 17, se figur 3, anordnad i armeringsorganet 3 i medbringarplâtens väg. Vid detta utförande kan âtersäkring ske genom att köra motorn vidare i sin ursprungliga rotationsriktning. Kilen 1? kommer därvid tvinga medbringarplâten 10 ur ingrepp med spindeln 9, varefter retur- och styrfjädrarna âterför mekanismen till startläget på samma sätt som vid det först visade utförandet.In an alternative embodiment, a wedge 17, see figure 3, is arranged in the reinforcing member 3 in the path of the carrier plate. In this embodiment, reinsurance can take place by driving the motor further in its original direction of rotation. Wedge 1? will thereby force the carrier plate 10 out of engagement with the spindle 9, after which the return and guide springs return the mechanism to the starting position in the same way as in the first embodiment shown.

Ehuru âterföringsorganen 4 och 13 visats såsom fjädrar är det tänkbart inom uppfinningens ram att i stället låta dem utgöras av elektromagnetiska organ. *xAlthough the return means 4 and 13 are shown as springs, it is conceivable within the scope of the invention to instead let them consist of electromagnetic means. * x

Claims

10 15 20 25 30 35 463 637 B_e-t_e_n_t_k _: _ e_x

A mechanism for an ammunition unit, comprising a housing (1), which houses a reinforcing member (3), a rotatable spindle (9) for transmitting a rotating movement in a first direction of rotation (15) of the spindle to an axial movement of the reinforcing member, and a movable part (2), for example forming part of a time mechanism, wherein said movable part may be a rotor, for example in the form of a detonator housing, the reinforcing member being axially movable between a secured position (figure 1), in which it is in engagement with the movable part (2), so that it is prevented from moving, and a reinforced position (figure 2), in which the reinforcing member is out of engagement with the movable part (2), so that it can move, k characterized in that the reinforcing means (3) and the spindle (9) are connected to each other by means of a threaded connection (10-12), which is capable of opening and disengaging the reinforcing means from the spindle if necessary, wherein return means (4, 13) are arranged to the disengaged position of the reinforcement member return arm the means for engaging the movable member to provide re-securing of the mechanism.

Mechanism according to claim 1, characterized in that the threaded connection (10-12) has said ability to be opened as a result of rotation of the spindle (9) in a second direction of rotation (16).

Mechanism according to claim 1 or 2, characterized in that the threaded connection comprises on the one hand a thread on the spindle (9) and on the other hand a carrier member (10) arranged in the reinforcing member, which has a thread profile (12), the carrier member being rotatable in such a way stored in the reinforcing member so that it can be rotated between a first position (Figures 1 and 5), in which the threaded profile of the driver means engages with the threaded spindle, to a second position (Figures 4 and 7), in which the threaded profile of the driver member is out of engagement with the threaded spider. 463 10 15 20 25 30 35 m \ 1 O *

Mechanism according to claim 3, characterized in that the reinforcing means has a stop means (14) for preventing the carrier means (10) of the spindle (9) from being rotated past said first position, the engagement between the threaded profile (12) of the carrier means and the spindle ( 9) is dimensioned to give such a friction between the carrier means and the spindle during its rotation in the first direction of rotation (15) that a torque is obtained on the carrier means, which strives to keep the carrier means in a fixed engagement with the spindle therein. by the stop means defined the rotational position.

Mechanism according to any one of the preceding claims, characterized in that the return means consist of spring means (4, 13).

Mechanism according to any one of claims 3-5, characterized by a kit (17) arranged in the reinforcing means (3), which in a predetermined relative position between the driving means (10) and the spindle forces the driving means out of said engagement with the spindle, if the spindle rotated in the first direction of rotation past the predetermined relative position.