Simulated fragmentation grenade

Abstract

The invention relates to a simulated fragmentation grenade that can be rearmed for reuse, comprising a fixed part attached to springs acting on plates that move between an inner position and an outer position, an axial mobile part passing through the fixed part, the axial mobile part being pushed upwards by a spring, and being axially extended in the upper portion by a rod that is rotatably actuated by a mechanism, the rod being attached to a control casing arranged on the outside such that it can move axially and rotationally on a central extension of the body of the grenade, the axial mobile part having retention means for retaining the plates in the inner position, for releasing that retention according to the movement of the axial mobile part.

1 . A simulated fragmentation grenade formed by elements that are connected to one another to determine an explosive functional behavior that can be rearmed for reuse, charactcrizcd in that wherein it comprises a structural body internally determining a central space and peripheral spaces, the peripheral spaces having rotary closure gates, whereas a fixed part is arranged in the central space, to which there are attached radially oriented springs acting on plates located in the peripheral spaces with the possibility of moving between an inner position and an outer position with respect to same; an axial mobile part passing through the fixed part, said axial mobile part being pushed upwards by a lower spring and axially extended in the upper portion by a rotary rod rotating thereon which is connected with a rotation actuating mechanism and attached at the end thereof to a control casing arranged on the outside such that it can move axially and rotationally on a central extension of the structural body; the axial mobile part being provided with retention means for retaining the plates in the inner position of the peripheral spaces, for releasing that retention according to the movement of said axial mobile part. 
     
     
         2 . The simulated fragmentation grenade according to  claim 1 , wherein the control casing has in its peripheral wall inwardly-projecting notches which fit in longitudinal grooves of the central extension of the structural body, allowing axial movement of said control casing; said longitudinal grooves communicating with an annular channel defined at the base of the central extension along which the notches can slide, allowing rotation of the mentioned control casing in an axial movement position thereof. 
     
     
         3 . The simulated fragmentation grenade according to  claim 2 , wherein the peripheral wall of the control casing has a flange for abutting against a removable retention element blocking the rotation of said control casing in an angular position thereof with its notches housed in the annular channel of the central extension of the structural body. 
     
     
         4 . The simulated fragmentation grenade according to  claim 3 , wherein the retention element is arranged between lugs, in which it is secured by means of a transverse pin that can be extracted to allow removing said retention element. 
     
     
         5 . The simulated fragmentation grenade according to  claim 1 , charactcrizcd in that wherein the closure gates of the peripheral spaces have in the area of rotational assembly thereof a tooth-shaped lip, which engage the corresponding plates with their edge, which plates force said gates to the closed position when located inside the peripheral spaces. 
     
     
         6 . The simulated fragmentation grenade according to  claim 1 , wherein the plates have on their inner face engagement elements, whereas the axial mobile part has other engagement elements in the areas facing said plates, enabling the establishment between the engagement elements and of an interlocking for retaining the plates inside the peripheral spaces. 
     
     
         7 . The simulated fragmentation grenade according to  claim 1 , wherein the structural body comprises a lower cap and an upper cap which are attached to one another by means of columns, the central space and peripheral spaces of the inside of said structural body being defined between said columns and the caps and. 
     
     
         8 . The simulated fragmentation grenade according to  claim 7 , wherein the engagement elements of the axial mobile part incorporate protrusions on which there are arranged explosive primers susceptible to colliding with housings defined in the lower base of the upper cap to produce a simulated detonation effect 
     
     
         9 . The simulated fragmentation grenade according to  claim 1 , wherein the structural body has holes for introducing shrapnel-like elements through same into the peripheral spaces of the inside, said holes being able to be blocked with plugs or any other closure means. 
     
     
         10 . The simulated fragmentation grenade according to  claim 7 , wherein the control casing has radially outward projecting protuberances which fit in longitudinal grooves of the upper cap, allowing axial movement of said control casing, said longitudinal grooves communicating with an annular channel the upper cap has defined therein, along which the protuberances can slide, allowing rotation of the control casing in an axial movement position thereof. 
     
     
         11 . The simulated fragmentation grenade according to the prcccding  claim 10 , wherein the control casing has a window in which an appendage of a retention element can fit, blocking rotation of the control casing in an angular position of the control casing in which the protuberances thereof are housed in the annular channel of the upper cap. 
     
     
         12 . The simulated fragmentation grenade according to  claim 7 , wherein the control casing has a radial projection on which there can be placed an explosive primer configured for colliding against a radial projection of the control casing and producing a simulated detonation effect. 
     
     
         13 . The simulated fragmentation grenade according to  claim 3 , wherein the retention element comprises an L-shaped extension partially covering the control casing.