EP3043140A1 - Flexible chute for regular feeding of objects to a machine - Google Patents

Abstract

The invention relates in particular to the field of object feeding of a machine and more particularly to a flexible lane comprising successive sections (2) connected by portions of walls (11, 11 2, 13 1) at the of their transverse faces and comprising at least one tubular section (2) of axis G with a first wall portion (11 1, 11 2) secured to one of its two transverse faces and a second portion (13 1) of integral wall of the other transverse face characterized in that the projections of these wall portions perpendicular to a trarsversal plane of the section. are at least partly separate.

Description

The invention particularly relates to the field of the supply of ammunition of a firearm and more particularly to a flexible corridor for guiding a flexible ammunition strip from an ammunition crate to a firearm.

This corridor is intended to be fixed on the one hand near a box of cartridges, and secondly at the entrance to the supply corridor of the weapon; it has, by construction, the necessary flexibility and sufficient flexibility and torsion to allow movement of the weapon without giving the band deformations greater than those suitable for its proper operation.

In many cases, small-caliber machine gunners, up to 12.7mm, feed their weapons with ammunition crates, see without ammunition crates, and have only 100 or 200 knocks available to them. must monitor during firing to avoid inadvertent snagging before ammunition introduction, which could stop the weapon or impair its proper functioning.

There are nowadays, especially for new weapons or new weapon systems, corridors with soft ammunition and metal. These corridors consist of a series of sets of elements mounted one behind the other, so as to form successive joints and to compose a corridor of sufficient length to make the junction between an ammunition box and a weapon to ensure the supply of ammunition thereof. These devices have many disadvantages such as compote manufacturing, the need for significant maintenance to keep the charges in state.

To solve these drawbacks, the patent is known US3435937 which describes a corridor of partially rectangular section having a longitudinal wide groove on one of its long sides and formed by a succession of identical sections, two successive sections being connected by sidewall portions, at each of the lateral faces of their little sides. Thus, two emergent grooves disposed in the same plane separate two successive sections and the corridor comprises n sets of two opening grooves arranged in parallel planes and allow a certain flexibility of the corridor, the longitudinal groove also participating in the flexibility of the corridor as indicated in FIG. the description of the figure 2 said patent.

By sidewall portion is meant that these sidewall portions do not connect the short sides along their entire length but only on a portion of the latter.

However, such a corridor has a flexibility in a plane only which considerably limits its use.

The object of the invention is to provide a flexible corridor to solve all the disadvantages of the state of the art and, more particularly to provide a corridor for ammunition light, flexible in at least two plans, maintenance-free, price of returns very low, easy to implement and repair in the field.

The solution provided is a flexible ammunition corridor comprising successive sections connected by portions of walls at their transverse faces and comprising at least one tubular section G-axis with a first wall portion secured to one of its two transverse faces and a second wall portion integral with the other transverse face, characterized in that the projections of these wall portions perpendicular to a transverse plane of the section, are at least partly distinct.

By distinct, it must be understood that the projections in the same transverse plane, for example one of the transverse faces, are totally distinct; they have no point in common.

According to another characteristic, said projections are radially offset by an angle of between π / 9 and 8π / 9 and, preferably, between π / 3 and 2π / 3, the origin of the radius being the center G.

According to a particular characteristic, a flexible ammunition corridor according to the invention comprises successive sections connected by portions of walls at their transverse surfaces, characterized in that it comprises at least one tubular section comprising at least one large upper side, a large lower side, and two smaller lateral sides and in that this section comprises, on a first transverse face, at least one wall portion only on at least one of said lateral sides and, on its second transverse face, su minus one or more wall portions only on one of the lower and upper major sides or both.

According to an additional characteristic, the solution provided is a flexible ammunition corridor comprising successive sections connected by portions of walls at their lateral faces, characterized in that it comprises at least a first, a second and a third successive tubular sections comprising at least one large upper side, one large lower side, and two smaller lateral sides and such that the first section is connected to the second only by one or more portions of axial walls at each of the transverse faces of their long upper and / or lower sides facing each other while the second section is connected to the third section only by one or several side wall portions at each of the transverse faces of their smaller, laterally facing side faces.

Thus, the first and second sections are partly separated by a first and a second groove arranged in a first plane and facing one another while the second and third sections are partly separated by a third and a fourth grooves disposed in a second plane and facing each other, the first and second grooves being radially offset from the third and fourth grooves. This radial offset makes it possible to obtain a flexibility of the first section with respect to the second in a first direction while and a flexibility of the second section with respect to the third according to a second direction different from the first,

In the context of this patent application, the term axial has no geometric meaning but it is used to differentiate the wall portions connected to the long sides of those, said side, connected to the smaller side sides.

Salon a particular characteristic, a corridor according to the invention is characterized in that it comprises at least a first and a second successive sets each comprising a first and a second successive tubular sections comprising at least one large upper side, one large lower side , and two smaller lateral sides and such that the first sections are secured to the second only by one or more axial wall portions at each of the transverse faces of their long upper and lower sides, and in that the first set is secured. the second set only by one or more side wall portions at each of the transverse faces of their smaller side sides.

According to a particular characteristic, the one or more sections are tubular of rectangular transverse outer shape with two long sides of the same length connected to two other smaller sides, themselves of the same length.

According to another particular characteristic favoring the flexibility of the corridor, each of the sections has a thickness, measured longitudinally, less than 2 cm and preferably between 0.3 and 1 cm,

According to another feature, the lateral wall portions are concentrated at the middle portion of the transverse faces of said short sides.

According to an additional feature, the axial wall portions are concentrated at the middle portion of the transverse faces of said long sides.

According to another feature facilitating its manufacture the corridor is monobloc and preferably made of elastomer or plastic, thus making it possible to manufacture it by molding.

According to another feature making it possible to secure the corridor to a weapon or to a box of ammunition, a flexible corridor according to the invention comprises, at least at one of its ends, an adapter end comprising a first part having, mainly, a inner diameter slightly greater than the outer diameter of the flexible corridor and a second portion of inner diameter equal to that of the corridor.

According to another characteristic for securing two non-interconnected corridor portions, a corridor according to the invention comprises at least one device adapted to this device comprising a U-shaped plate whose dimension between the branches is equal to or slightly greater than to the thickness of the corridor and whose width of the plate is substantially the same as that of two sections arranged side by side, and which has lateral flanges so as to form an element adapted to be clipped on two sections arranged side by side .

• La figure 1 montré un exemple de réalisation d'un couloir flexible pour munitions fabriqué en plastique par moulage,
• Les figures 2a et 2b présentent la forme générale d'un tronçon utilisé dans le cadre de la figure 1,
• La figure 2c présente un schéma de la projection des portions de paroi axiale et latérale d'un tronçon dans un pian transversal de ce tronçon.
• La figure 3a montre un ensemble dudit couloir en vue de dessus alors que la figure 3b le montre en coupe selon le plan AA' de la figure 3a,
• La figure 4 montre un schéma d'une vue de côté des 5 premiers ensembles du dudit couloir,
• La figure 5a présente un schéma d'une vue de dessus d'un exemple de déformation des tronçons d'un ensembles,
• La figure 5b présente un schéma d'une vue de côté d'un exemple de déformation de deux ensembles consécutifs,
• La figure 6 montre un schéma en perspective d'un embout d'adaptation 30 utilisable pour solidariser le couloir 1 à certains types d'armes ou à certaines caisses de munitions.
• La figure 7 présente un schéma d'une première partie, en l'occurrence une partie avant, d'un embout selon la figure 6.
• La figure 8 présente un schéma d'une seconde partie, en l'occurrence une partie arrière, d'un embout 30 selon la figure 6,
• La figure 9 montre un couloir en vue semi éclatée comportant un embout d'adaptation à chacune de ses extrémités libres, une bande de cartouches étant insérée à l'intérieur du couloir et des embouts,
• Les figures 10a et 10b montrent un exemple d'un dispositif 49 apte à réparer un couloir flexible selon l'invention en solidarisant deux parties de couloir non reliées entre-elles.

Other advantages and characteristics will appear in the description of a particular embodiment of the invention with regard to the following figures:

• The figure 1 shown an exemplary embodiment of a flexible ammunition corridor made of plastic by molding,
• The Figures 2a and 2b have the general shape of a section used in connection with the figure 1 ,
• The Figure 2c presents a diagram of the projection of the axial and lateral wall portions of a section in a transverse plane of this section.
• The figure 3a shows a set of said corridor in top view while the figure 3b shows it in section according to plan AA 'of the figure 3a ,
• The figure 4 shows a diagram of a side view of the first 5 sets of the said corridor,
• The figure 5a shows a diagram of a top view of an example of deformation of the sections of a set,
• The figure 5b presents a diagram of a side view of an example of deformation of two consecutive sets,
• The figure 6 shows a perspective diagram of an adapter tip 30 used to secure the corridor 1 to certain types of weapons or some boxes of ammunition.
• The figure 7 presents a diagram of a first part, in this case a front part, of a mouthpiece according to the figure 6 .
• The figure 8 presents a diagram of a second part, in this case a rear part, of a tip 30 according to the figure 6 ,
• The figure 9 shows a semi-exploded corridor having an adapter end at each of its free ends, a strip of cartridges being inserted inside the corridor and end pieces,
• The Figures 10a and 10b show an example of a device 49 adapted to repair a flexible corridor according to the invention by joining two parts of corridor not connected to each other.

The figure 1 shows an exemplary embodiment of a flexible ammunition corridor made of plastic by molding.

This passage 1 has a generally tubular shape of rectangular section of external dimensions 25mm x 86mm, and a wall thickness of 5mm thus having a cavity of rectangular section of dimensions 15mm x 76mm able to allow the passage of munitions of 7.62 mounted on link to form a band.

This flexible passage 1 consists mainly of successive sections 2 connected by wall portions 11, 13 at their transverse faces, Figures 2a and 2b show the general shape of a stretch used in this example of embodiment of the invention and, more particularly respectively, a diagram of a perspective view of one of the transverse faces of a section 2 used in the context of the corridor 1, and a diagram of a perspective view of the other face. transverse, this section 2 has a rectangular tubular shape of axis G with a first and a second small parallel sides 8, 18 connected to a first and second long parallel sides 9, 19 and first and second transverse faces 10, 20 parallel and intended to be arranged opposite different sections. The outer dimensions of this section are 25mm x 86mm, and the wall section is approximately 5mm x 5mm.

The Figure 2c shows a projection of the section 2 and wall portions associated therewith in the transverse plane P _T containing its transverse face 10 whose center is G, G being also on the axis of the tubular section and on the corridor when it is straight. It can be seen that the projections 26 ₁ , 26 ₂ perpendicular to Pt of the axial wall portions 11 ₁ and 11 ₂ are totally distinct from those 26 ₃ , 26 ₄ of the side wall portions 13 ₁ and 13 ₂ and all the projections of these portions. wall are distinct. In addition, G being the origin, the projections ₂₆ March 26 ₄ for sidewall portions 13 ₁ and 13 ₂ are offset relative to those of the axial wall portions 11 ₁ and 11 ₂ of an angle α equal to π / 2.

The corridor 1 according to this embodiment is constituted by a succession of identical sets such as that shown, in plan view, on the figure 3a and on the figure 3b , in section according to plan AA 'of the figure 3a .

Each set 12 consists of a first section 2 ₁ and a second section 2 ₂ arranged parallel and side by side so that the transverse surface 10 ₁ of the first section 2 ₁ is opposite the transverse surface ₂ of the second section 2 ₂ . These first and second sections 2 ₁ , 2 ₂ are secured, on the one hand, by a first axial wall portion 11 ₁ connecting the first large side 9 ₁ of the first section 2 ₁ to the first large side 9 of the second section 2 ₂ and on the other hand by a second wall portion 11 ₂ connecting the second long side 19 ₁ of the first section 2 ₁ to the second long side 19 ₂ of the second section 2 ₂ . These first and second axial wall portions 11 ₁ and 11 ₂ , have a cross section of about 5mm x 5mm and longitudinally a thickness of about 3mm.

The figure 4 shows a diagram of a side view of the first 5 sets 12 ₁ , 12 ₂ 12 ₃ , 12 ₄ , 12 ₅ of the corridor 1. The first set 12 ₁ is secured to the second set 12 ₂ , on the one hand by a first side wall portion 13 ₁ connecting the first small side 8 ₂ of the second section 2 ₂ of the first set 12 ₁ to the first small side 8 ₁ of the first section 2 ₁ of the second set 12 ₂ and, secondly, by a second side wall portion 13 ₂ connecting the second small side 18 ₂ of the second section 2 ₂ of the first set 12 ₁ to the second small side 18 ₁ of the first section 2 ₁ of the second set 12 ₂ .

Thus, apart from the first and last sections, each section is connected, on the one hand, to the one preceding it by first and second axial wall portions 11 ₁ and 11 ₂ respectively connecting their first and second long sides and on the other hand, to the succeeding section by first and second side wall portions 13 ₁ , 13 ₂ respectively connecting their first and second small lateral sides.

As can be seen on the figures 3a and 4 said first and second axial wall portions 11 ₁ and 11 ₂ connect the long sides at their middle portion and said first and second side wall portions 13 ₁ and 13 ₂ connect the short sides also at their portion. median.

The first and second upper and lower wall portions 11 ₁ and 11 ₂ provide flexibility to the corridor in the width direction of the corridor, while said first and second side wall portions 13 ₁ and 13 ₂ provide flexibility to the corridor. corridor in the direction of the thickness of the corridor.

So, as shown on the figure 3 within the same set, the sections 2 ₁ and 2 ₂ are separated by first grooves 14 ₁ and 14 ₂ which face each other and are C-shaped relative to the material forming the assembly and while two successive assemblies are separated by second grooves 15 ₁ and 15 ₂ which face each other and are U-shaped with respect to the material forming the assembly and. These first and second grooves each have a plane of symmetry and the plane of symmetry of the first grooves 14 ₁ and 14 ₂ and perpendicular to that of the second grooves 15 ₁ and 15 ₂ .

• des faibles dimensions des portions de paroi axiale 11₁ et 11₂ reliant les grands côtés de paroi générant les premières gorges 14₁ et 14₂ en forme de C
• d'une certaine élasticité du matériau constitutif du couloir,

la position du premier tronçon 2₁ peut varier par rapport à celle du second tronçon 2₂ et plus particulièrement symétriquement par rapport à l'axe neutre longitudinal passant par lesdites portions de paroi axiale 11₁ et 11₂. Ainsi, l'extrémité 16₁, du grand côté 9₁ du premier tronçon 2₁ se retrouve contre celle 16₂ du second tronçon 2₂ tandis que l'extrémité 17₁ du grand côté 9₁ du premier tronçon 2₁ se retrouve à une distance plus importance de celle 17₂ du second tronçon 2₂, générant ainsi une courbure de cet ensemble dans le plan formé par les premier grand côté 9.The figure 5a shows a diagram of a top view of an example of deformation of the sections 2 ₁ , 2 ₂ of a set 12 ₃ . It can be seen that:

• small dimensions of the axial wall portions 11 ₁ and 11 ₂ connecting the long wall sides generating the first grooves 14 ₁ and 14 ₂ C-shaped
• a certain elasticity of the material constituting the corridor,

the position of the first section 2 ₁ may vary with respect to that of the second section 2 ₂ and more particularly symmetrically with respect to the longitudinal neutral axis passing through said axial wall portions 11 ₁ and 11 ₂ . Thus, the end 16 ₁ , the long side 9 ₁ of the first section 2 ₁ is found against that 16 ₂ of the second section 2 ₂ while the end 17 ₁ of the long side 9 ₁ of the first section 2 ₁ is found at a distance more important than that 17 ₂ of the second section 2 ₂ , thus generating a curvature of this set in the plane formed by the first long side 9.

• des faibles dimensions des portions de paroi latérale 13₁ et 13₂ reliant les grands côtés de paroi générant les secondes gorges 15₁ et 15₂ en forme de U
• d'une certaine élasticité du matériau constitutif du couloir,

la position de l'ensemble 12₄ peut varier par rapport à celle de l'ensemble 12₅ et plus particulièrement symétriquement par rapport à l'axe neutre transversal passant par le centre desdites portions de paroi latérale 13₁ et 13₂. Ainsi, l'extrémité 21₄, du petit côte latéral 18₄ de l'ensemble 12₄ se retrouve contre celle 21₅, du petit côté latéral 8₅ de l'ensemble 12₅ tandis que l'extrémité 22₄ du petit côté latéral 18₄ de l'ensemble 12₄ se retrouve à une distance plus importance de celle 22₅, du petit côté latéral 8₅ de l'ensemble 12₅ générant ainsi une courbure de ces ensembles dans un plan perpendiculaire à celui formé par les premier grand côté 9.The figure 5b shows a diagram of a side view of an example of deformation of two consecutive sets 12 ₄ , 12 ₅ . It can be seen that:

• small dimensions of the side wall portions 13 ₁ and 13 ₂ connecting the long wall sides generating the second grooves 15 ₁ and 15 ₂ U-shaped
• a certain elasticity of the material constituting the corridor,

the position of the assembly 12 ₄ may vary relative to that of the assembly 12 ₅ and more particularly symmetrically with respect to the transverse neutral axis passing through the center of said side wall portions 13 ₁ and 13 ₂ . Thus, the end 21 ₄ of the small lateral side 18 ₄ of the assembly 12 ₄ is found against the 21 ₅ , the small side side 8 ₅ of the assembly 12 ₅ while the end 22 ₄ of the small side side 18 ₄ of the assembly 12 ₄ is found at a greater distance from that 22 ₅ , the small lateral side 8 ₅ of the assembly 12 ₅ thus generating a curvature of these sets in a plane perpendicular to that formed by the first large side 9.

When the corridor is folded, especially in the width direction, the ends 16, 21 are in contact while the other ends 17, 22 have an increased gap. When a band is towed, it tends to take the shortest path, so the ammunition strip will tend to abut on the side where the sections are in contact with each other. Consequently, the probability that the most sensitive part of the ammunition strip, the tip side of the cartridges, is caught in the grooves between the sections is practically nil.

With this geometry, a radius of curvature of 110mm was obtained in the direction of the thickness of the corridor and a radius of curvature of 300mm in the direction of the width of the corridor.

However, the radii of curvature are dependent on the width of the grooves between each section of the flexible corridor.

Of course, the weapons and existing ammunition boxes have no interface to secure them to the corridor 1. Therefore an adaptation interface, called tip, is described in the following with respect to Figures 6 to 8 ,

The figure 6 shows a perspective diagram of an adapter tip 30 used to secure the corridor 1 to certain types of weapons or some boxes of ammunition.

• une première partie 31 ayant, principalement, un diamètre interne légèrement supérieur au diamètre externe du couloir flexible,
• une seconde partie 32 de diamètre interne égal à celui du couloir,
• un épaulement 33 assurant l'interface entre des première et seconde parties 31, 32.

This adapter piece 30 for flexible lane 1 is of rectangular tubular shape with:

• a first portion 31 having, mainly, an inner diameter slightly greater than the outer diameter of the flexible lane,
• a second portion 32 of internal diameter equal to that of the corridor,
• a shoulder 33 providing the interface between first and second portions 31, 32.

The figure 7 shows a diagram of a first part, in this case a front part, of a tip 30 according to the figure 6 . This first part consists of a steel sheet 0.8 to 1.2 mm thick, longer than that of a set 12 of the corridor and the same peripheral shape as that of a section 2 but of internal diameter at less equal to the outer diameter of a section so that the latter can penetrate inside.

This sheet has, on each of its long sides 34, four longitudinal notches, two of which on one side of the long side and two others 36 on the other side of the long side so as to form two plates 37 of approximately 10 mm × 10 mm. whose free end is bent inwards so as to form claws 38 and so that the distance between the shoulder and the claw is slightly greater than that of an assembly. These claws 38 are chamfered on their outer lower part. The length of the notches is sufficient to give some elasticity to said plates 37.

Thus, for the securing of the passage 1 and this endpiece, an end of the flexible passage 1 is introduced inside the first part 31 of the end piece so that its free transverse face comes into contact with the shoulder 33. In this position, the claws 38 are each found in a groove, in this case the grooves 15 and the absence of chamfer on the inner part of the claws to block the corridor in this position.

It should be noted that because of said chamfers on the lower part of the claws 38, the latter slide on the corresponding lower or upper parts of the corridor when the latter is introduced into the nozzle. For removal of the passageway of the end piece, it suffices to pull the free ends 37 of the four plates 36, 37 outwards so as to extract the claws 38 from the grooves 15 and, simultaneously, to remove the passage from the endpiece .

The figure 8 presents a diagram of a second part, in this case a rear part, of a tip 30 according to the figure 6 . This second part 32 of the mouthpiece, presented on the figure 8 has an inner diameter substantially equal to that of the passage 1 and further comprises means for locking this endpiece on a weapon or on an ammunition box consisting of a lower transverse projecting plate 40 disposed on its long lower side 41 and of a tube 42 disposed on its large upper side and having notches 43 into which are introduced bolt elements 44 as shown on the figure 9 . These locking means are intended to cooperate with complementary means not shown located on the weapon or the ammunition box.

The Figures 10a and 10b show an example of a device 49 adapted to repair a flexible corridor according to the invention by joining two parts of corridor not connected to each other. It consists of a plate 50 formed of U whose dimension between the branches 51 is equal to or slightly greater than the thickness of the corridor and whose length of the branches is slightly less than half the width of the corridor minus half -width of an axial wall portion 11. The width of the plate is substantially the same as that of two sections arranged side by side.

This plate 50 has lateral flanges 53, 54 so as to form an element adapted to be clipped on two sections arranged side by side.

In the event of deterioration of the flexible corridor, accident, projectile or brightness, this one is perfectly repairable in a very short time.

The procedure for repair is as follows: the damaged sections and the associated sidewall portions 13 are cut so as to contiguously locate two sets 12. A first device 49 is positioned to grip a first portion of the sections located face-to-face of the two adjacent assemblies and a second device 49 is positioned so as to enclose a second portion of the sections located face to face of the two adjacent sets, the first and second devices 49 facing each other.

The feeding of a munition strip inside the corridor can be carried out manually or with the aid of a device such as, for example, that described in the patent application. FR12 00275 filed in the name of the plaintiff, published under number FR2986317 .

Of course, many modifications can be made to the embodiment without departing from the scope of the invention. Thus, the dimensions of the flexible corridor can be adapted to those of the ammunition used and this invention can be declined on all small calibers mounted on links up to 12.7mm, see the calibres means and pellet grenades.

In addition, a corridor according to the invention may have a different shape, for example trapezoidal, or elliptical. If the necessary curvature and its sense (s) are known, the wall portions may not be placed in the middle part of the long sides and / or in the middle part of the short sides in order to promote flexibility in this (s). direction and this curvature and radial offsets of the wall portions along the corridor may also be provided.

Moreover, the sections may be joined together by more than one portion of walls per small and / or large side. In addition, over all or part of the corridor said projections of the wall portions of a section may be radially offset from that of the section which precedes or succeeds it, the offset being regular or not along the corridor.

Finally, a flexible corridor according to the invention may have other applications than feeding a weapon with ammunition. Indeed, such a corridor can be used in combination with a flexible and endless drive chain and one or more receptacles, for example bucket type, for regular feeding of a machine into objects. The chain may for example be of the flexible strip type such as that described in the patent application PCT / FR2013 / 00027 published under the number FR2986317 , on which are fixed, preferably in a regular manner, buckets. Such a device may for example be used to feed rivets a robot, one of its ends being connected to a rivet distributor and the other to a 3D robotic arm in charge of assembling mechanical parts.

Claims (12)

Flexible corridor (1) for regular feeding of a machine into objects, corridor comprising successive sections (2) connected by portions of walls (11, 13) at their transverse faces and comprising at least one tubular section (2 ) of axis G with a first wall portion (11 ₁ , 11 ₂ ) integral with one of its two transverse faces and a second portion (13 ₁ , 13 ₂ ) wall integral with the other transverse face, characterized in that the projections (26 ₁ , 26 ₂ , 26 ₃ , 26 ₄ ) of these wall portions perpendicular to a transverse plane of the section, at least in part, are distinct. Flexible corridor according to claim 1, characterized in that said projections (26 ₁ , 26 ₂ , 26 ₃ , 26 ₄ ) are completely distinct. Flexible corridor according to claim 2, characterized in that said projections (26 ₁ , 26 ₂ , 26 ₃ , 26 ₄ ) radially offset by an angle between π / 9 and 8π / 9 and, preferably, between π / 3 and 2π / 3, the origin of the ray being the center G. Flexible corridor according to claim 1, comprising successive sections (2) connected by wall portions (11 ₁ , 11 ₂ , 13 ₁ , 13 ₂ ) at their transverse faces (10, 20), characterized in that it comprises at least one tubular section (2) comprising at least one large upper side (9), one large lower side (19), and two smaller lateral sides (8, 18) and in that this section (2) comprises on at least one transverse portion (20) at least one wall portion (13 ₁ , 13 ₂ ) only on at least one of said lateral sides and at least one or more portions on its second transverse face (10). wall (11 ₁ , 11 ₂ ) only on one of the lower and upper upper sides (9, 19) or both. Flexible corridor according to claim 1, comprising successive sections connected by wall portions at their transverse faces (10, 20), characterized in that it comprises at least a first, a second and a third successive tubular section ( 2) having at least one large upper side (9), one large lower side (19), and two smaller lateral sides (8, 18) and such that the first sections are connected to the second only by one or more wall portions axial (11 ₁ ) at each of the transverse faces of their long upper and / or lower sides facing each other while the second section is connected to the third section only by one or more sidewall portions (13 ₁ ) at each of the transverse faces of their smaller, laterally facing side faces, Flexible corridor according to any one of claims 1 to 5, characterized in that it comprises at least a first and a second successive sets (12 ₁ , 12 ₂ ) each comprising a first and a second successive tubular segments (2 ₁ , 2 ₂ ) having at least one large upper side (9 ₁ , 9 ₂ ), one large lower side (19 ₁ , 19 ₂ ), and two smaller lateral sides (8 ₁ , 8 ₂ , 18 ₁ , 18 ₂ ) and such that the first sections (2 ₁ ) are secured to the second (2 ₂ ) only by one or more axial wall portions (11 ₁ , 11 ₂ ) at each of the transverse faces (10 ₁ , 20 ₂ ) of their major lower and upper side, and in that the first assembly (12 ₁ ) is secured to the second assembly (12 ₂ ) only by one or more sidewall portions (13 ₁ 13 ₂ ) at each of the transverse faces (10 _2). , ₁ ) their smaller lateral sides. Flexible corridor according to any one of claims 1 to 6, characterized in that each of the sections (2) has a thickness, measured longitudinally, less than 2cm and preferably between 0.3 and 1cm. Flexible corridor according to any one of claims 1 to 7, characterized in that the side wall portions (13 ₁ , 13 ₂ ) concentrated at the middle portion of the transverse faces (10 ₂ , 20 ₁ ) of said short sides ( 8 ₁ , 8 ₂ , 18 ₁ , 18 ₂ ) and / or the axial wall portions (11 ₁ , 11 ₂ ) are concentrated at the middle portion of the transverse faces (10 ₁ , 20 ₂ ) of said long sides (9 ₁ , 9 ₂ , 19 ₁ , 19 ₂ ). Flexible corridor according to any one of claims 1 to 8, characterized in that it is monobloc, made for example of plastic or elastomer. Flexible corridor according to any one of claims 1 to 9, characterized in that it comprises, at least at one of its ends, an adapter end (30) comprising a first part (31) having, mainly, an inner diameter slightly greater than the outer diameter of the flexible corridor and a second portion (32) of inner diameter equal to that of the corridor. Flexible corridor according to any one of claims 1 to 9, characterized in that it comprises at least one device (49) capable of joining two non-interconnected passage portions to each other, this device comprising a plate (50) made of U-shape whose dimension between the branches (51) is equal to or slightly greater than the thickness of the passageway and whose width of the plate is substantially the same as that of two sections arranged side by side, and which has lateral flanges (53, 54) so as to form an element capable of being clipped on two sections arranged side by side. Application of a flexible corridor according to any one of claims 1 to 11 to the feed of a robot eh objects such, for example, rivets.

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