LU102114B1 - Component for motor vehicle tank - Google Patents

Abstract

The invention relates to a component (2) for a plastic tank for a motor vehicle comprising an armature (20) comprising a deflector (21) intended to cooperate with a fluid contained in the tank to limit the movement noise of this fluid, the component comprising at least one means (23) intended for fixing an internal reinforcing element (3) of the tank, characterized in that the means (23) intended for fixing the internal reinforcing element (3) comprises at at least one first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) and at least one second structure (231) capable of penetrating inside a hole (31) of a wall of the internal reinforcing element (3). The invention also relates to an internal reinforcing element (3) able to be fixed to said component but also to the assembly (1) obtained after fixing the internal reinforcing element (3) to the component (2).

Description

Fo € LU102114 1 Component for motor vehicle tank.

1. Field of the invention The invention relates to the technical field of noise deflectors (also called baffles) for plastic tanks for motor vehicles and plastic tanks for motor vehicles containing noise deflectors. More particularly, the invention relates to a component for a plastic tank for a motor vehicle comprising a frame comprising at least one deflector and an internal reinforcing element capable of being fixed to the component for a plastic tank for a motor vehicle. also an assembly adapted to be fixed inside a plastic tank for a motor vehicle comprising said component and at least one internal reinforcing element as well as the plastic tank for a motor vehicle comprising said assembly. The invention also relates to a method of manufacturing a plastic tank for a motor vehicle.

2. PRIOR ART SOLUTIONS Conventionally, in the case of plastic reservoirs obtained by blow molding a parison, a noise-reducing device comprising a deflector is fixed in the plastic reservoir. This device, also called a noise baffle, aims to reduce the noise (often referred to by the English expression "slosh noise") associated with the waves that can be generated within the tank when the vehicle accelerates suddenly, brakes, takes turns The expression "anti-slosh baffles" is also used in the jargon of the trade.

It is known that plastic fuel tanks undergo dimensional variations during their life, firstly as soon as they leave the mould, due to their cooling which is accompanied by a shrinkage of the material, i.e. during their use, in particular due to overpressures or depressions of their contents, either because of their thermal expansion during their life, or even because of their ageing.

Known anti-noise devices are effective and have the ability to adapt to dimensional variations of the tank. Thus the document US 2011/0226777 Al discloses an assembly comprising a noise deflector and connecting elements of the deflector to the walls of the tank, said connecting elements having a low rigidity which does not allow them to perform an internal reinforcement function, said assembly also comprising deformable structures in the longitudinal direction (X) of the vehicle for which the component is intended and the transverse direction (Y) of this vehicle but also the vertical direction (Z) of said vehicle. However a | such an assembly has a fairly limited ability to adapt to the dimensional variations of the tank. In addition, such a device has a resistance to | compression and stretching in the vertical direction of the vehicle too low.

| 3. Aims of the invention The aim of the invention is in particular to overcome these disadvantages of the prior art.

To this end, the object of the invention is to provide an assembly comprising a component comprising a frame comprising at least one noise-damping deflector for a tank made of plastic material for a motor vehicle, the assembly also comprising at least one internal reinforcing element, said assembly having an increased ability to adapt to dimensional variations of the tank, more particularly during the manufacture of said tank and having a resistance to compression and to stretching in the vertical direction (Z) relative to the vehicle.

Specifically, an objective of the invention, in at least one of | its embodiments, is to provide a component comprising a reinforcement comprising at least one deflector but also to provide at least one internal reinforcing element, the component and the at least one internal reinforcing element being capable of forming an assembly having a increased ability to adapt to dimensional variations of a plastic tank for a motor vehicle, more particularly during the manufacture of said tank.

The invention, in at least one of its embodiments, also aims to provide a plastic tank for a motor vehicle.

Another objective of the invention, in at least one of its embodiments, is to implement a method for manufacturing a plastic tank for a motor vehicle.

4. Presentation of the invention (resumption of the claims) According to a particular embodiment, the invention relates to a component for a plastic tank for a motor vehicle comprising a frame comprising a deflector intended to cooperate with a fluid contained in the tank. to limit movement noise of this fluid, the component comprising at least one means intended for fixing an internal reinforcing element of the tank.

According to the invention, such a component comprises at least one means intended for fixing the internal reinforcing element comprising at least one first structure capable of enclosing an outer part of the internal reinforcing element and at least one second structure capable to penetrate inside a hole of a wall of the internal reinforcing element, preferably a through hole of a wall of the internal reinforcing element. Preferably, the second structure is capable of penetrating inside two holes of a wall of the internal reinforcing element. More preferably, the second structure is capable of penetrating inside two holes of two walls of the internal reinforcing element, said walls being opposite one another. The general principle of the invention is based on the presence of a means intended for the fixing of the internal reinforcing element making it possible simultaneously to enclose the internal reinforcing element, to center the component comprising at least one deflector with respect to the internal reinforcement element and to limit the relative movements of the component and of the internal reinforcement element, mainly a rotation of one with respect to the other. However, such a fastening means also makes it possible to obtain a connection between the internal reinforcing element and the reinforcement having a certain degree of freedom of movement from one relative to the other.

Thus, the invention is based on a completely new and inventive approach to a fastening means allowing an increase in the capacity of a | 15 assembly comprising at least one deflector and at least one internal reinforcing element 1 to adapt to the dimensional variations of the tank and allows a reduction in the stresses generated by the presence of said assembly within | of the tank. In addition, the fact of enclosing the internal reinforcement elements in the axis parallel to the weld surface of the internal reinforcement element on the reservoir makes it possible to increase the contact surface between the component and the internal reinforcement. This increase in surface thus limits the relative displacements between the 2 parts in the 2 parallel axes with respect in particular to the weld surface. Such an interconnection created between the internal reinforcement element and the component by penetration of the second structure of the fastening means present on the frame of the component in a blind or through hole of the reinforcement element ensures centering of the two parts. This centering limits the movements allowed by the mere fact of enclosing the internal reinforcement elements. The component thus has an indirect link with the tank and this in a constant position. Preferably, the second structure is capable of penetrating inside two holes of a wall of the internal reinforcing element, preferentially the second structure is capable of penetrating inside two holes of two walls of the internal reinforcement, said walls being opposite to each other allow centering and improved fixing.

The expression “a hole in a wall of the internal reinforcing element 5” is intended to denote a blind hole or a through hole in a wall of the internal reinforcing element, preferably a through hole of a wall of the internal reinforcement element.

The expression “internal reinforcement element” is intended to designate a structural element welded at its 2 ends to the plastic tank in order to limit the deformation of the tank during pressurization.

The term “reservoir” is intended to designate a sealed reservoir, capable of storing liquid fuel under various and varied conditions of use and environment. The tank according to the invention is made with a plastic material wall, generally comprising an inner face on its concave part and an outer face on its convex part. Preferably, the tank is a liquid fuel plastic tank.

Advantageously, the component for a motor vehicle tank according to the invention is such that the first structure capable of enclosing an outer part of the internal reinforcing element comprises at least one arm capable of being inserted between two protrusions of the reinforcing element internal.

Thus, the insertion of at least one arm of the first structure of the fastening means between two protuberances present on the internal reinforcing element makes it possible to block the translational movements of the component with respect to the reinforcing element. internal. More particularly, this insertion makes it possible to block the movements of the component relative to the internal reinforcing element in the direction perpendicular to the welding surface of the internal reinforcing element on the plastic tank.

| 6 According to a preferred embodiment of the previous embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the first structure capable of enclosing an outer part of the internal reinforcing element comprises at least two arm, at least one of the two arms, preferably the at least two arms, being capable of being inserted between two protuberances of the internal reinforcing element.

Thus, a first structure comprising two arms makes it possible to distribute the stresses over these two arms, improving the mechanical resistance to the stresses undergone.

According to a preferred embodiment of the previous embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the first structure capable of enclosing an outer part of the internal reinforcing element comprises a recessed part of material when the at least two arms are located in the same plane, said recessed portion of material being located between the two arms and facing the internal reinforcing element when fixing the internal reinforcing element to the component.

Thus, such a first structure having a recessed part between the two arms makes it possible to offer greater flexibility of the two arms allowing easier enclosing of the internal reinforcing element.

According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the at least one arm of the first structure capable of enclosing an outer part of the internal reinforcing element forms an arc of circle having an angle greater than 180°, more preferably, the at least arm has a hook shape.

Thus an arm having the shape of an arc of a circle makes it possible to obtain a fixing close to a clamping by clip, more particularly when the element x x x — ( _— —_—_—_—_——mmmmmnnennnanann »—— —

internal reinforcement has a cylindrical zone on which the clamping takes place. According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the first structure capable of enclosing an outer part of the internal reinforcing element comprises at least two arms, at least one of the two arms, preferably both arms, having an arcuate shape. Preferably, at least one of the two arms has an angle greater than 180°. More preferably, at least one arm has a hook shape. When the first structure capable of enclosing an outer part of the internal reinforcing element comprises at least two arms having the shape of an arc of a circle, the latter have an angle of at most 180° when they are located in the same plane. of containment. More particularly when the internal reinforcement element has a cylindrical zone on which the clamping takes place, the angle of the arc of a circle being a function of the material constituting the arms. Such an arrangement makes it easier to enclose the internal reinforcing element.

According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that at least one arm comprises a protrusion at its end, said protrusion being preferably oriented on the inner part of the arm intended to grip the internal reinforcement element.

Thus the protrusion makes it possible to limit the length of the arc of a circle by guaranteeing the tightness of the internal reinforcement element. Limiting the length of the arc of a circle reduces the “material” constraints when positioning the reinforcing element between the arm, preferably between the two arms, of the first structure.

According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the second structure capable of penetrating inside a hole in a wall of the internal reinforcing element, preferably a through hole in a wall of the internal reinforcing element, is a rod.

Thus, the rod of the second structure provides guidance | when positioning the internal reinforcement element on the component frame. In addition, the rod ensures support in all directions (X/Y/Z) of the internal reinforcement element in relation to the vehicle. It is preferably positioned towards the opposite end of the internal reinforcing element on which it must be inserted with respect to the zone of the internal reinforcing element enclosed by the first structure. This advantageously makes it possible to block the possibility of rotation of the internal reinforcing element around the upper.

According to a preferred embodiment of the previous embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the rod is chosen from the group consisting of a solid rod, a rod comprising a recess or a rod comprising at least two tabs, preferably said tabs comprising at least one protrusion on their outer surface.

Thus, a rod comprising more particularly a recess or tabs allows a tight fit of the rod in the hole of the internal reinforcement element. There is therefore a tight fit of the internal reinforcement element on the upper. Such a rod makes it possible to combine a guiding function with a mechanical holding function between the second structure and the internal reinforcing element. Preferably at least one of the tabs has at least one protrusion to prevent disconnection of the rod from the hole of the internal reinforcing element. The term "disconnection" is intended to designate the fact that the rod comes out of the hole in which it is inserted. According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is such

AA

| that the first structure capable of enclosing an outer part of the internal reinforcing element and the second structure capable of penetrating inside a hole in a wall of the internal reinforcing element are located at different places on the means for fixing the internal reinforcing element. Thus, a positioning of the first structure capable of enclosing an outer part of the internal reinforcing element and of the second structure capable of penetrating inside a hole of a wall of the internal reinforcing element located at places different from the means intended for fixing the internal reinforcing element make it possible to block the possibility of rotation of the internal reinforcing element around the second structure, more particularly around a second structure in the form of a rod. Such an arrangement also allows a better distribution of forces between the first structure and the second structure. Thus the two structures do not need to be oversized, which reduces the total weight of the means intended for fixing the internal reinforcing element.

According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is such that the component comprises a deformable link connecting the reinforcement and the means intended for fixing the internal reinforcing element, said link being capable of deforming to allow relative movement of the reinforcement and of the means intended for fixing the internal reinforcing element relative to each other under the effect of a mechanical stress external to the component .

Thus, a deformable link makes it possible to reduce the stresses on the reinforcement, said stresses being linked to variations in temperature and pressure in the tank generating deformations by displacement of the internal reinforcing element(s) relative to each other. These displacements generate stresses on the reinforcement if no deformable link is present on the reinforcement and therefore between it and the internal reinforcement element(s). Preferably, the deformable link allows deformations in the axes parallel to the welding surface of the internal reinforcing element on the tank.

eee eee

According to a preferred embodiment, the component for a plastic tank for a motor vehicle according to the invention is based on a material selected from the group of materials consisting of high density polyethylene (HDPE), polyoxymethylene (POM), polyamide (PA), polyphthalamide (PPA), polyketone (PK). Preferably, the deflector is based on a material selected from the group of materials consisting of high density polyethylene (HDPE) and polyoxymethylene (POM), said deflector being traversed by a plurality of holes. Preferably, the component is in the form of a single piece. Alternatively, the baffle can be clipped onto the component frame. The component can also include elements allowing the fixing of the ventilation and fuel lines but also serve as a support for components of the fuel system such as a pump, a level sensor, a pressure sensor, a temperature sensor and a valve such as a valve, a valve of the Roll Over Valve (ROV) type or a valve of the Fill Limit Vent Valve (FLVV) type, Another object of the invention is to provide an internal reinforcement element for a tank made of material plastic for a motor vehicle, said internal reinforcing element being intended to be fixed to a means for fixing a component for a tank made of plastic material for a motor vehicle according to the invention, the internal reinforcing element comprising at least one first end intended to be enclosed by the first structure of the component fastening means and a second end comprising a hole in a wall of the internal reinforcing element, preferably a hole tr rising from a wall of the internal reinforcement element, capable of receiving a second structure of the component fixing means.

Thus, the fact that the internal reinforcing element has a first end intended to be clamped by the first structure of the component fixing means according to the invention combined with the presence of a hole in a wall rt of the internal reinforcement adapted to receive a second structure of the component fixing means allows obtaining an interconnection between the element | internal reinforcement and the component and ensures centering of the two parts. This centering | limits the movements allowed by the mere fact of enclosing the internal reinforcement elements.

According to a preferred embodiment, the internal reinforcing element for a plastic tank for a motor vehicle intended to be fixed to a means for fixing a component for a plastic tank for a motor vehicle according to the invention is such that the first end the internal reinforcement element comprises at least two protrusions intended to insert an arm of the first structure of the component fastening means.

Thus, the insertion of at least one arm of the first structure of the fastening means between two protuberances present on the internal reinforcing element makes it possible to block the translational movements of the component with respect to the reinforcing element. internal. More particularly, this insertion makes it possible to block the movements of the component relative to the internal reinforcing element in the direction perpendicular to the surface of the weld of the internal reinforcing element on the tank. The protuberances are not located at places of high stress and therefore do not weaken the internal reinforcement element.

Preferably, the internal reinforcing element is in the form of a column, preferably cylindrical, or in the form of a diabolo. Said reinforcing element preferably comprises on these two ends two molded parts in a material capable of being welded to the walls of the tank. The internal reinforcement element is preferably made up of a central part based on polyoxymethylene (POM), polyphthalamide (PPA), polyketone (PK), polyamide (PA), metal and two molded parts in high-density polyethylene. density (HDPE). The internal reinforcement element preferably comprises a zone of mechanical weakness capable of causing breakage

. | LU102114 12 | said element when the latter is subjected to strong stresses emanating from the forces exerted on the reservoir. This area of mechanical weakness is in the form of a weaker section, at least one notch or a lower thickness of the wall. The internal reinforcing element may comprise a hollow part, more particularly in the central part of the reinforcing element.

Another object of the invention is to provide an assembly for a plastic tank for a motor vehicle comprising a component for a plastic tank for a motor vehicle according to the invention and an internal reinforcing element according to the invention.

Another object of the invention is to provide a plastic tank for a motor vehicle comprising an assembly for a plastic tank for a motor vehicle according to the invention.

An object of the invention is also to provide a method of manufacturing a plastic tank for a motor vehicle.

According to an advantageous implementation of the method for manufacturing a plastic tank for a motor vehicle according to the invention, said method comprises a step of fixing an internal reinforcing element according to the invention to a component for tank made of plastic for a motor vehicle the invention.

5. List of figures Other characteristics and advantages of the invention will appear more clearly on reading the following description of a preferred embodiment, given by way of a simple illustrative and non-limiting example, and the appended drawings, among which: e Figure 1 shows an assembly for a plastic tank for a motor vehicle according to the invention,

| LU102114 13 ° Figure 2 illustrates a means intended for fixing an internal reinforcing element of a component according to the invention, | ° Figure 3 describes the connection between an internal reinforcing element according to the invention and a component according to the invention., ° Figure 4 shows an internal reinforcing element according to the invention.

6. Description of at least one embodiment of the invention There is presented, in relation to FIG. 1, an embodiment of an assembly (1) for a plastic tank for a motor vehicle according to the invention comprising a component (2) and an internal reinforcing element (3). The component (1) for a plastic tank for a motor vehicle comprises an armature (20) comprising a deflector (21) intended to cooperate with a fluid contained in the tank to limit the movement noise of this fluid, the component comprising at least means (23) for fixing an internal reinforcement element (3) of the tank. The means (23) intended for fixing the internal reinforcing element (3) comprises at least a first structure capable of enclosing an outer part of the internal reinforcing element (3) and at least a second structure capable of penetrating inside a hole in a wall of the internal reinforcing element (3), preferably a through hole in a wall of the internal reinforcing element (3). The component (2) comprises a deformable link (22) connecting the reinforcement (20) and the means (23) intended for fixing the internal reinforcing element (3), said link (22) being able to deform to allow relative movement of the reinforcement (20) and of the means (23) intended for fixing the internal reinforcing element (3) with respect to each other under the effect of a mechanical stress external to component (2). The frame (20) also includes a part (24) capable of being used for inserting the assembly into a parison during manufacture of the tank.

N/A

Figure 2 shows a means (23) intended for fixing an internal reinforcing element of a component (2) according to the invention.

The component (2) comprises a deformable link (22) connecting the reinforcement (20) and the means (23) intended for fixing the internal reinforcing element (3), said link (22) being able to deform to allow relative movement of the armature (20) and of the means (23) intended for fixing the internal reinforcing element relative to each other under the effect of a mechanical stress external to the component (2). The means (23) for fixing the internal reinforcing element (3) comprises a | first structure (230) capable of enclosing an outer part of the element | 10 internal reinforcement and a second structure (231) capable of penetrating inside a hole in a wall of the internal reinforcing element, preferably a hole | passing through a wall of the internal reinforcement element.

The first structure (230) | capable of enclosing an outer part of the internal reinforcing element (3) comprises 1 at least two arms (2300), at least one of the two arms (2300), preferably the at least two arms (2300), being capable of be inserted between two protuberances of the internal reinforcement element.

The first structure (230) capable of enclosing an outer part of the internal reinforcing element comprises a recessed part (2302) of material when the at least two arms (2300) are located in the same plane, said recessed part (2302) of material located between the two arms (2300) and opposite the internal reinforcing element when fixing the internal reinforcing element to the component.

The arms (2300) have an arcuate shape and include a protrusion (2301) at their end, said protrusion (2301) being oriented on the inner part of the arms (2301) intended to enclose the internal reinforcing element.

The second structure (231) capable of penetrating inside a hole in a wall of the internal reinforcing element, preferably a through hole in a wall of the internal reinforcing element, is a rod (2310). Figure 3 describes the connection between an internal reinforcing element (3) according to the invention and a component (2) according to the invention forming the assembly (1) for a plastic tank for a motor vehicle according to the invention.

The component (2) comprises a deformable link (22) connecting

| the reinforcement (20) and the means (23) intended for fixing the internal reinforcing element (3), said link (22) being capable of deforming to allow relative movement of the reinforcement (20 ) and means (23) for fixing the internal reinforcing element relative to each other under the effect of a mechanical stress external to the component (2). The means (23) intended for the fixing of the internal reinforcing element (3) comprises a first structure (230) capable of enclosing a | outer part of the internal reinforcing element (3) and a second structure (231) capable of penetrating inside a hole in a wall of the internal reinforcing element (3), preferably a hole passing through a wall of the internal reinforcing element.

The first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) comprises at least two arms, at least one of the two arms (2300), preferably the at least two arms, being capable of being inserted between two protuberances (30) of the internal reinforcement element (3). The first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) comprises a hollowed-out part (2302) of material when the at least two arms (2300) are located in the same plane, said hollowed-out part (2302) of material located between the two arms (2300) and facing the internal reinforcing element when fixing the internal reinforcing element to the component.

The arms (2300) have an arcuate shape.

The second structure (231) capable of penetrating inside a hole in a wall of the internal reinforcing element (3), preferably a through hole in a wall of the internal reinforcing element ( 3), is a rod (2310). Figure 4 shows an internal reinforcing element (3) according to the invention. 1. The internal reinforcing element (3) for a plastic tank for a motor vehicle intended to be fixed to a means for fixing a component for a plastic tank for a motor vehicle according to the invention.

The internal reinforcement element (3) comprises at least a first end intended to be clamped by the first structure of the component fixing means and a second end comprising a hole (31) in a wall of the internal reinforcement element ( 3), preferably a through hole (3) of a wall of the internal reinforcing element (3), capable of receiving a second structure of the component fastening means.

The first end of the internal reinforcement element (3) comprises at least two protuberances (30) intended to insert an arm of the first structure of the component fastening means.

Claims (15)

1. Component (2) for a plastic tank for a motor vehicle comprising an armature (20) comprising a deflector (21) intended to cooperate with a fluid contained in the tank to limit the movement noise of this fluid, the component (2 ) comprising at least one means (23) intended for fixing an internal reinforcing element (3) of the tank, characterized in that the means (23) intended for fixing the internal reinforcing element (3) comprises at least a first structure (230) capable of enclosing a part | exterior of the internal reinforcing element (3) and at least one second structure (231) capable of penetrating inside a hole (31) of a wall of the internal reinforcing element (3), preferably a hole (31) passing through a wall of the internal reinforcing element (3). 2. Component (2) for a plastic tank for a motor vehicle according to claim 1, such that the first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) comprises at least one arm (2300 ) adapted to be inserted between two protuberances (30) of the internal reinforcing element (3). 3. Component (2) for a plastic tank for a motor vehicle according to claim 2, such that the first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) comprises at least two arms (2300 ), at least one of the two arms (2300), preferably the at least two arms (2300), being adapted to be inserted between two protuberances (30) of the internal reinforcing element (3). 4. Component (2) for a plastic tank for a motor vehicle according to claim 3, such that the first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) comprises a recessed part of material ( 2302) when the at least two arms (2300) are —-—————"—"—""—"""———————— located in the same plane, said recessed part of material (2302) being located between the two arms (2300) and facing the internal reinforcing element (3) when fixing the internal reinforcing element (3) to component (2). 5. Component (2) for a plastic tank for a motor vehicle according to any one of claims 2 to 4, such that the at least one arm (2300) forms an arc of a circle 6. Component (2) for a plastic tank for a motor vehicle according to any one of claims 2 to 5, such that at least one arm (2300) comprises a protrusion (2301) at its end, said protrusion (2301) preferably being oriented on the inner part of the arm (2300) intended to enclose the internal reinforcing element (3). 7. Component (2) for a plastic tank for a motor vehicle according to any one of the preceding claims, such that the second structure (231) capable of penetrating inside a hole (31) of a wall of the internal reinforcing element (3), preferably a hole (31) passing through a wall of the internal reinforcing element (3), is a rod (2310). 8. Component (2) for a plastic tank for a motor vehicle according to claim 7, such that the rod (2310) is chosen from the group consisting of a solid rod, a rod comprising a recess or a rod comprising at least two tabs, preferably said tabs comprising at least one protrusion on their outer surface. 9. Component (2) for a plastic tank for a motor vehicle according to any one of the preceding claims, such that the first structure (230) capable of enclosing an outer part of the internal reinforcing element (3) and the second structure ( 231) capable of penetrating inside a hole (31) of a wall of the internal reinforcing element (3) are located at different places from the means (23) intended for fixing the internal reinforcement (3). 10. Component (2) for a plastic tank for a motor vehicle according to any one of the preceding claims, such that the component (2) comprises a deformable link (22) connecting the frame (20) and the | means (23) intended for fixing the internal reinforcing element (3), said link (22) being capable of deforming to allow relative movement of the reinforcement (20) and of the means (23) intended for fixing of the internal reinforcing element (3) relative to each other under the effect of a mechanical stress external to the component (2). 11. Internal reinforcing element (3) for a plastic tank for a motor vehicle, said internal reinforcing element (3) being intended to be fixed to a fixing means (23) of a component (2) for a vehicle tank motor vehicle according to any one of Claims 1 to 10, the internal reinforcing element (3) comprising at least one first end intended to be clamped by the first structure (230) of the fastening means (23) of the component (2) and a second end comprising a hole (31) in a wall of the internal reinforcing element (3), preferably a hole (31) passing through a wall of the internal reinforcing element (3), capable of receiving a second structure (231) of the fixing means (22) of the component (2). 12. Internal reinforcing element (3) for a plastic tank for a motor vehicle according to claim 11, said internal reinforcing element (3) being intended to be fixed to a fixing means (23) of a component (2) for a motor vehicle tank according to any one of claims 2 to 10, such that the first end of the internal reinforcing element (3) comprises at least two protrusions (30) intended to insert an arm (2300) of the first structure (230 ) of the fixing means (23) of the component (2). 13. Assembly (1) for a plastic tank for a motor vehicle comprising a component (2) for a motor vehicle tank according to any one of claims 1 to 10 and an internal reinforcing element (3) according to any one of claims 11 to 12 . 14. A plastic tank for a motor vehicle comprising an assembly (1) for a plastic tank for a motor vehicle according to claim 13. 15. Process for manufacturing a plastic tank for | 5 motor vehicle comprising a step of fixing an internal reinforcing element (3) according to any one of claims 11 to 12 to a component (2) for a plastic tank for a motor vehicle according to any one of claims 1 to 10.