FR3113517A1 - Detachable grenadière for a long weapon, long weapon comprising such a grenadière, and method for hooking and unhooking a mobile element of such a grenadière on such a weapon - Google Patents

Abstract

Detachable grenadière for a long weapon, long weapon comprising such a grenadière, and method of hooking and unhooking a mobile element of such a grenadière on such a weapon. This detachable grenadière (3) for a long weapon comprises a fixed element (8 ) attached to the long weapon and a mobile element. This movable element is removably attached to the fixed element and comprises a main body. This main body comprises a ring (45) for passing a shoulder strap and defines at least one attachment cavity. The fixed element (8) comprises a hooking head (81) configured to be reversibly engaged in the hooking cavity. The movable element comprises at least one lever (5), pivotally mounted on the main body between an open position and a closed position and comprising a lug for retaining the attachment head in the attachment cavity. Figure for abstract: 2

Description

Detachable grenadière for a long weapon, long weapon comprising such a grenadière, and method of hooking and unhooking a mobile element of such a grenadière on such a weapon

The present invention relates to a detachable grenadière for a long weapon, a long weapon comprising such a grenadière, and a method of hooking and unhooking a mobile element of such a grenadière on such a weapon.

By long weapon, we mean rifles, shotguns and any portable weapon other than a handgun.

In the field of long guns, it is known to temporarily attach a shoulder strap to a gun to facilitate its transport and offer better freedom of movement to the user. To hang this shoulder strap, it is known to use a grenadière, which is fixed to the weapon and which has a ring allowing the passage of the shoulder strap. This shoulder strap is attached to two points of the long weapon, a first located at the front, generally under the barrel, and a second at the rear, generally on the butt.

It is also known to use a detachable grenadière, thus making it possible to separate the shoulder strap from the long weapon, in particular so as not to hinder the shooter when the weapon must be used.

Such a detachable grenadière can, for example, be made using a male cylinder comprising a system of retractable balls and fitting into a fixing socket permanently installed on the long weapon, the cylinder being able to be detached from the socket by pressing a button, which unlocks the balls. This system has the disadvantage of being expensive, impractical and unattractive because, after unhooking the grenadière, the opening of the socket remains visible on the weapon. Dirt can accumulate there and this is quite unsightly.

It is these drawbacks that the invention more particularly intends to remedy by proposing a new detachable grenadière that is quick to hook and unhook, inexpensive to produce, practical and aesthetic.

To this end, the invention relates to a detachable grenadière for a long weapon comprising a fixed element secured to the long weapon and a mobile element, this mobile element being removably attached to the fixed element and comprising a main body, this body main comprising a ring for passing a shoulder strap. According to the invention, the main body of the grenadière defines at least one attachment cavity. In addition, the fixed element comprises a hooking head configured to be reversibly engaged in the hooking cavity. Furthermore, the movable element comprises at least one lever, pivotally mounted on the main body between an open position and a closed position and comprising a lug for retaining the attachment head in the attachment cavity

Thanks to the invention, it is possible to inexpensively produce a detachable grenadière that is quick to hook and unhook, which does not present any risk of dirt accumulating on the weapon and whose aesthetics are improved.

According to advantageous, but not obligatory, aspects of the invention, such a detachable grenade can incorporate one or more of the following characteristics, taken according to any technically permissible combinations:

• Each lever is arranged in a housing in the main body and each lever is movable between its open position and its closed position, by rotation around a pivot shaft.
• The grenadière comprises an elastic return member for each lever in the closed position.
• The main body carries two levers, each disposed in a housing provided between two walls of the main body, each lever has a blind hole located on an inner face, a bar of the main body has a through housing whose main axis is parallel to a transverse axis of the main body, the elastic return member is a helical compression spring placed in the through housing and each end of which is received in the blind hole of a lever, and the return member maintains each lever in the closed position by applying a force parallel to the transverse axis of the main body on the bottom of the blind hole of each lever.
• In the closed position of the grenadière, an outer face of a lever is flush with the side edges of the walls of the main body.
• The reminder body is neither visible nor accessible.
• In the position of engagement with the attachment head of the fixed element, the mobile element is rotatable around an axis transverse to the attachment head of the fixed element.

According to another aspect, the invention also relates to a long weapon comprising a shoulder strap fixed by at least one detachable grenadière as described above.

According to another aspect, the invention also relates to a method for attaching a mobile element of a detachable grenadière as mentioned above to a long weapon as mentioned above, in which the attachment of the mobile element of the grenadière comprises at least the following steps:

a) positioning of the movable element above the attachment head of the fixed element, a depth axis of the main body being parallel to a main axis of the fixed element, a transverse axis of the main body being parallel to a transverse axis of the attachment head and a central opening of a wall of the main body being directed towards the fixed element,

b) insertion of the attachment head into the central opening of the main body by a translation movement of the mobile element parallel to the depth axis of the main body and directed towards the attachment head,

c) snapping of the attachment head into the attachment cavity by a translational movement of the movable element parallel to a longitudinal axis of the main body,

in which during step c), the attachment head comes into contact with a mounting face of each lever and then exerts a force having the effect of moving each lever apart in the open position,

and in which, at the end of step c), each lever is in the closed position and a retaining face of the lug of each lever holds the attachment head in the attachment cavity.

According to another aspect, the invention also relates to a method of unhooking a mobile element of a detachable grenadière as mentioned above fixed to a long weapon as mentioned above, in which the unhooking of the element mobile of the grenadière comprises at least the following steps:

a) tilting of each lever in the open position by exerting a force on an operating member of each lever;

b) disengagement of the attachment head from the attachment cavity by a translation of the movable element parallel to a longitudinal axis until the attachment head is positioned facing a central opening of a wall of the body major ;

c) exit of the attachment head from the central opening by a translational movement of the movable element parallel to the depth axis of the main body and directed away from the fixed element.

These methods of fixing and unhooking induce the same advantages as those mentioned above about the detachable grenadière and the long weapon of the invention.

The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a detachable grenadière, of a long weapon comprising such a grenadière and of a method of hooking and unhooking a mobile element of such a grenadière on such a weapon, given solely by way of example and made with reference to the appended drawings in which:

Figure 1 is a perspective view of a long weapon according to the invention, equipped with a shoulder strap attached to the long weapon by a detachable grenadière according to the invention.

Figure 2 is a perspective view of the grenadière of the long weapon of figure 1.

Figure 3 is an exploded perspective view of the grenadière of Figure 2.

Figure 4 is a section along plane IV of Figure 2.

A long weapon 1 is shown in Figure 1 in perspective view. This long weapon can, for example, be a rifle or a shotgun. This long weapon comprises, among other things, a barrel 11 and a stock not shown. It is equipped with a shoulder strap 2 attached, at a first end, to a support 13 of the barrel 11, by means of a first detachable grenadière 3. Advantageously, the shoulder strap 2 is attached to the stock, not shown, of the weapon 1 , at a second end also not shown of the shoulder strap, by means of a second detachable grenadière, also not shown.

The detachable grenadière 3 is shown alone in perspective in Figure 2.

The grenadière 3 comprises a main body 4, two levers 5, located on either side of the main body and each pivotally mounted on the main body using a pivot shaft 6, and a return member 7. The main body, the levers, the pivot shafts and the return member together form a mobile element 9 of the grenadière. The grenadière 3 also comprises an element 8 fixed to the support. In this example, the element 8 is a screw which comprises a hooking head 81 and a threaded rod 82, of axis Z8 and intended to be screwed into the support 13. Thus, the element 8 is fixed with respect to weapon 1.

A longitudinal axis X of the grenadière is defined as being an axis parallel to the largest dimension, that is to say the length, of the main body 4. A transverse axis Y is defined as an axis orthogonal to the axis X and connecting the two levers 5. A depth axis Z is defined as being the third axis of an orthogonal reference frame comprising the axes X and Y. The axes of rotation of the pivot shafts 6 are parallel to the depth axis Z The grenadière 3 has orthogonal symmetry with respect to a plane parallel to the plane formed by the axes X and Z and passing halfway between the pivot shafts 6.

As visible in Figures 2 and 3, the main body is of generally flat shape and defines an upper wall 41, visible in Figure 2, and a lower wall 42, visible in Figure 3. These two walls are parallel and located the one above the other along the depth axis Z. The qualifiers "upper" and "lower" correspond to the relative position of the walls 41 and 42 in the configuration of FIG. 2. However, in the configuration of Figure 3, the wall 42 is located above the wall 41.

The walls 41 and 42 have an outline in the shape of an isosceles trapezium, that is to say formed of two parallel bases, the first base being longer than the second base, these bases being parallel to the Y axis, and of two edges which converge going from the first base towards the second base. These walls 41 and 42 have a non-zero thickness, between 5 and 8 mm, preferably equal to 6 mm.

The upper wall 41 has an inner face 411 and an outer face 413, and the lower wall 42 has an inner face 421 and an outer face 423. The inner faces 411 and 421 are facing each other and the faces external 413 and 423 are opposed to each other.

Moreover, when the mobile element 9 of the grenadière 3 is mounted on the element 8 fixed to the long weapon 1, the external face 423 is facing the support 13.

In the example, faces 411 and 421 are parallel to the plane formed by the X and Y axes.

In the example, the faces 413 and 423 are divergent going from the first base of the walls 41 and 42 towards the second base of these walls.

The wall 41 has two side edges 415, only one of which is visible in the figures and which connect the faces 411 and 413 on the two converging sides of the wall.

The wall 42 has two side edges 425, only one of which is visible in the figures and which connect the faces 421 and 423 on the two converging sides of the wall.

Bottom wall 42 has a central opening 427.

The main body 4 comprises a bar 43, which connects the walls 41 and 42 at their first base. The bar 43 does not extend over the entire width of the walls 41 and 42, that is to say it does not extend to the side faces 415 and 425. Thus, the bar 43 defines, with the walls 41 and 42, two counterbores 431.

Bar 43 has a through housing 433, whose main axis Y433 is parallel to axis Y and which connects the two counterbores 431 into which it opens.

The main body 4 also comprises two fixing lugs 44, which each connect a part of the upper wall 41 and a part of the lower wall 42, at the level of their second base, close to the side edges 415 and 425. In other words, the second bases of the walls 41 and 42 are connected together near the edges 415 and 425 but are not connected together in their central part.

Each fixing lug 44 is semi-circular in shape and defines an attachment cavity 441 and a recess 443.

A ring 45, which defines an opening O45 for passage of the shoulder strap 2, extends from the bar 43 in a direction opposite to the walls 41 and 42. The section of the ring 41 has the shape of a loop in the cutting plane IV of Figure 4.

The levers 5 are identical. Each lever 5 is elongated. It comprises an upper face 51, parallel to the inner face 411 of the upper wall 41 in the configuration mounted on the lever 5 on the main body, a lower face 52, parallel to the inner face 421 of the lower wall 42 in this same configuration, an inner face 53 and an outer face 54 opposite the inner face. In the mounted position of the levers 5 on the main body 4, the inner faces 53 of the two levers 5 are directed towards each other and towards the cavity 427.

To the nearest operating clearance, the height H5 of the lever 5, measured along the Z axis between its upper face 51 and its lower face 52, is substantially equal to the height H4 measured along the Z axis between the faces 411 and 421. Preferably, this height is between 2 and 5 mm, more preferably equal to 3 mm.

Except for the operating clearance, the length L5 of the lever 5, that is to say its main dimension, measured in a plane parallel to the axes X and Y, is substantially equal to the length L4 defined between the counterbore 431 of the bar 43 and the recess 443 of the fixing lug 44 located on the same side of the plane of symmetry of the main body 4. Preferably, this length is between 15 and 25 mm, more preferably equal to 18 mm.

In other words, each lever 5 is of complementary shape to a housing 46 formed in the main body 4, between the walls 41 and 42, and between the volumes 431 and 443, along the edges 415 and 425. Thus, in mounted position, the lever 5 is placed between the upper wall 41 and the lower wall 42 and occupies the space between the recess 443 and the counterbore 431.

Each lever 5 is pivotally mounted in the main body 4 using a pivot shaft 6. The walls 41 and 42 each have two holes, respectively 416 and 426, allowing the mounting of the pivot shafts 6 of the two levers 5 The pivot shafts 6 are hollow cylinders. Alternatively, they may be solid. These pivot shafts are permanently mounted, for example crimped, on the main body 4.

The inner face 53 of each lever 5 has a lug 531. In the example of the figures, this lug has a triangular section. The lug 531 has a retaining face 5311, directed towards the adjacent attachment cavity 441 in the mounted configuration of the lever 5 on the main body 4, and a mounting face 5313, directed towards the bar 43 in this configuration.

The inner face 53 of each lever 5 also includes a blind hole 533. In the mounted position of the lever in the main body, the blind hole 533 is located opposite the through housing 433 of the bar 43.

The outer face 54 of each lever 5 includes an operating member 541, located opposite the blind hole 533.

In the mounted position of the lever 5 in the main body 4, each lever 5 is rotatable around the pivot shaft 6 which passes through it, between a closed position and an open position.

The mobile element 9 of the grenadière 3 comprises an elastic return member 7 of each lever 5 towards its closed position, which is then a reference position. In the example, this elastic return member 7 is a helical compression spring. This spring is, in practice, installed in the through housing 433 of the bar 43, its first end being received in the blind hole 533 of a first lever 5 and its second end being received in the blind hole 533 of the second lever 5. Thus , the spring 7 exerts a return force F1 on the bottom of the blind hole 533 of each lever 5, directed towards the outside of the through housing 433 and along the axis Y433, which maintains the levers in the closed position by default.

Moreover, when the levers 5 are mounted on the main body 4, the spring 7 is held in place both by the bar 43 and by the levers 5. It is thus neither accessible nor visible from outside the pomegranate 3.

The tilting of the levers 5 in the open position is carried out by exerting a pinching force F2 simultaneously on the operating members 541 of the two levers, this pinching force having a greater intensity than that of the return force F1.

In the closed position, the outer face 54 of each lever 5 is flush with the side edges 415 and 425 of the walls 41 and 42. By "flush", we mean that the outer face 54 of the lever 5 is remote from the side edges 415 and 425 less than 0.5 mm, distance measured along an axis orthogonal to face 54.

Moreover, in the closed position, the inner faces 53 of the two levers 5 are parallel.

The attachment head 81 comprises a cylinder of revolution 811 connected to the threaded rod 82 by a cradle 813.

The cylinder 811 has a radius substantially equal to the radius of the attachment cavities 441 of the two attachment lugs 44.

The length L811 of the cylinder 811 is substantially equal to the distance between the inner faces 53 of the two levers 5 in the closed position, measured along an axis orthogonal to these inner faces, that is to say parallel to the axis Y.

The width ℓ427 of the central opening 427 of the lower wall 42 of the main body 4, measured along the Y axis, is greater than the length L811 of the cylinder 811.

In the assembled configuration of the grenadière, that is to say when the main body is mounted on the fixed element 8, the cylinder 811 is housed in the two attachment cavities 441 of the two fixing lugs 44 and it is in contact with the retaining faces 5311 of the lugs 531 of the two levers 5. In this configuration, the axis of the cylinder Y811 is parallel to the axis Y.

Thus, in the mounted configuration of the mobile element 9 on the fixed element 8, the mobile element 9 is held in place on the cylinder 811 of the fixed element 8 by the attachment cavities 441 and the retaining faces 5311 lugs 531, which prevent the mobile element from being disengaged. This configuration, called the engagement configuration, is visible in the section of FIG. 4. In addition, in this configuration, the movable element 9 retains freedom of rotation around the axis Y811 of the cylinder 811, because the cavities of hooking 441 and retaining faces 5311 do not prevent this rotation. The amplitude of this rotation is greater than 90 ° , preferably equal to 180 °. This amplitude is defined by the geometry of the main body 4 and the fixed element 8, which come into contact in the two extreme angular positions of the rotation of the mobile element 9.

This rotation is practical for the user of the long weapon 1 because it facilitates the manipulation of the shoulder strap 2, the ring 45 in which the shoulder strap is fixed having freedom of movement around the longitudinal axis Y811 of the cylinder 811.

This configuration is the default configuration of the mobile element 9 mounted on the fixed element 8 because the spring 7 maintains the levers 5 in their closed position.

The grenadière 3 can be detached by the user from the long weapon 1, that is to say that the mobile element 9 can be separated from the fixed element 8.

To perform this separation, the user exerts the pinching force F2 simultaneously on the operating members 541 of the two levers 5, this force F2 being directed towards the spring 7.

The application of the pinching force F2 makes it possible to move the levers 5 from their closed position to their open position.

In the open position, the two lugs 531 of the levers 5 are no longer in contact with the cylinder 811 of the attachment head 81, and no longer block the translation of the main body 4 along the axis X, allowing the cavities to be moved away hooking 441 of the cylinder 811. In other words, when the levers 5 are in the open position, the distance measured between the lugs 531 parallel to the axis Y811 is greater than the length L811 of the cylinder 811. Thus, the user can release the cylinder from the attachment cavities 441 parallel to the axis X by moving the movable element 9 so as to position the central opening 427 of the main body above the cylinder 811. The cylinder 811 is then always located between the upper wall 41 and the lower wall 42. Once the cylinder 811 is located opposite the central opening 427, the movable element 9 is translated parallel to the Z axis away from the fixed element 8, until release of the cylinder 811 from inside the body p main 4 through the central opening 427, thus completing the separation of the grenadière.

The assembly of the grenadière, that is to say the fixing of the mobile element 9 on the fixed element 8, begins by orienting the mobile element 9 so as to place the axis Y811 parallel to the axis Y and the Z8 axis parallel to the Z axis, then by inserting the cylinder 811 into the main body 4, between the walls 41 and 42, by a translation of the movable element 9 parallel to the Z axis and directed towards the fixed element 8, allowing the cylinder 811 to pass through the central opening 427.

Once the cylinder is located in the main body, the user performs a translation movement of the movable element 9 along the X axis and directed going from the cavities 441 towards the bar 43. During this translation, the cylinder 811 comes into contact with the mounting face 5313 of the lugs 531. The shape of the lugs 531 is configured to allow the separation of the levers 5 towards their open position during the translation of the attachment cavities 441 towards the cylinder 811. More precisely, the angle formed between the mounting faces 5313 and the axis Y811 is configured to allow sliding of the cylinder 811 on the mounting faces under the force F3 generated by the translation of the mobile element 9, this sliding forcing the spread of levers 5.

The translation of the movable element 9 is continued after the separation of the levers 5, until the positioning of the cylinder in the attachment cavities 441. In this position, the levers 5 tilt into the closed position under the effect of the spring 7 , and the retaining faces 5311 come into contact with the cylinder 811, which is then locked in position.

Thus, the assembly of the grenadière is carried out without having to manipulate the operating devices 541 of the levers. This assembly is carried out by simply manipulating the mobile element 9 and snapping the attachment head 81 into the main body 4.

The outer face 413 of the upper wall of the main body comprises a globally flat surface of sufficient dimensions to affix a marking thereon, for example an identification symbol or a mark, or even an explanatory diagram of the operation of the grenadière 3.

As a variant of the invention, not shown, the walls 41 and 42 of the main body can have a shape other than trapezoidal, for example rectangular.

Similarly, the choice of arranging the faces 411 and 421 parallel to the plane formed by the axes X and Y and of arranging the divergent faces 413 and 423 is not technically limiting. Other non-represented variants of the invention can be imagined, for example with the faces 413 and 423 parallel.

As a variant of the invention, not shown, the detachable grenadière 3 comprises a single hook 5. In this configuration, the geometry of the main body 4 is adapted. For example, the hook can be arranged on the upper wall 41 and be able to rotate around a pivot axis parallel to the transverse axis Y.

As a variant of the invention, not shown, the lever 5 is an elastically deformable part and a return member is then not necessary for the lever to remain in the closed position.

As a variant of the invention, not shown, the main body 4 comprises a single attachment cavity 441. In this configuration, the geometry of the constituent parts of the mobile element 9 and of the attachment head 81 is adapted.

In a variant not shown of the invention, the screw 82 of the element 8 for fixing to the long weapon is replaced by a ring surrounding the barrel 11 and attached to the attachment head 81, or even a weld of the attachment head on the barrel.

The embodiments and variations contemplated above can be combined to generate new embodiments in the invention.

Claims (10)

Detachable grenade (3) for a long weapon (1) comprising a fixed element (8) integral with the long weapon and a mobile element (9), this mobile element being removably attached to the fixed element and comprising a main body (4), this main body comprising a ring (45) for passing a shoulder strap (2), characterized in that:

• the main body (4) defines at least one attachment cavity (441);
• the fixed element (8) comprises a hooking head (81) configured to be reversibly engaged in the hooking cavity;
• the movable element (9) comprises at least one lever (5), pivotally mounted on the main body (4) between an open position and a closed position and comprising a lug (531) for retaining the hooking head in the hooking cavity.

Detachable grenade (3) according to Claim 1, characterized in that:

• each lever is arranged in a housing (46) of the main body (4); And
• each lever (5) is movable between its open position and its closed position, by rotation around a pivot shaft (6).

Detachable grenade (3) according to Claim 2, characterized in that it comprises a member (7) for the elastic return of each lever to the closed position. Detachable grenade (3) according to Claim 3, characterized in that:

• the main body (4) carries two levers (5), each disposed in a housing (46) formed between two walls (41, 42) of the main body;
• each lever has a blind hole (533) located on an inner face (53);
• a bar (43) of the main body (4) comprises a through housing (433) whose main axis (Y433) is parallel to a transverse axis (Y) of the main body (4);
• the elastic return member (7) is a helical compression spring placed in the through housing (433) and each end of which is received in the blind hole (533) of a lever (5); And
• the return member (7) maintains each lever (5) in the closed position by applying a force (F1) parallel to the transverse axis (Y) of the main body (4) on the bottom of the blind hole (533) of each lever.

Detachable grenade (3) according to Claim 4, characterized in that in the closed position, an outer face (54) of a lever is flush with the lateral edges (415, 425) of the walls (41, 42) of the main body (4). Detachable grenade (3) according to one of Claims 3 to 5, characterized in that the return member (7) is neither visible nor accessible. Detachable grenade (3) according to one of the preceding claims, characterized in that, in the position of engagement with the attachment head (81) of the fixed element (8), the movable element (9) is movable in rotation around a transverse axis (Y811) of the attachment head of the fixed element. Long weapon (1) comprising a shoulder strap (2) fixed by at least one detachable grenadière (3), characterized in that the detachable grenadière (3) is according to one of the preceding claims. Method for attaching a mobile element (9) of a detachable grenadière (3) in accordance with one of Claims 1 to 7 on a long weapon (1) in accordance with Claim 8, characterized in that the method comprises at least the following steps:
a) positioning of the movable element (9) above the hooking head (81) of the fixed element (8), a depth axis (Z) of the main body being parallel to a main axis (Z8 ) of the fixed element, a transverse axis (Y) of the main body being parallel to a transverse axis (Y811) of the attachment head and a central opening (427) of a wall (42) of the main body being directed to the fixed element,
b) insertion of the attachment head into the central opening of the main body by a translational movement of the movable element parallel to the depth axis (Z) of the main body and directed towards the attachment head,
c) latching of the attachment head in the attachment cavity (441) by a translational movement of the movable element parallel to a longitudinal axis (X) of the main body,
in that, during step c), the hooking head (81) comes into contact with a mounting face (5313) of each lever (5) then exerts a force (F3) having the effect of move each lever to the open position, and
in that, at the end of step c), each lever is in the closed position and a retaining face (5311) of the lug (531) of each lever (5) holds the attachment head in the hooking cavity (441). Method of releasing a mobile element (9) of a detachable grenadière (3) according to one of Claims 1 to 7 fixed to a long weapon (1) according to Claim 8, characterized in that the method comprises at least the following steps:
a) tilting of each lever (5) in the open position by exerting a force (F2) on an operating member (541) of each lever;
b) release of the attachment head (81) from the attachment cavity (441) by a translation of the movable element (9) parallel to a longitudinal axis (X) until the attachment head is positioned in facing a central opening (427) of a wall (42) of the main body;
c) exit of the attachment head from the central opening by a translational movement of the movable element parallel to the depth axis (Z) of the main body and directed away from the fixed element (8 ).