CN216185524U - Vehicle body floor - Google Patents

Abstract

The application provides a vehicle body floor which comprises a floor body and a reinforcing section bar, wherein the floor body comprises a boss, the boss comprises two oppositely arranged side plates and a top plate connected between the two side plates, and the top plate and the two side plates jointly limit and form a middle channel; the reinforcing section bar is positioned in the middle channel, is arranged at the joint of the side plate and the top plate and is connected with the side plate and the top plate. The application provides a vehicle body floor is through setting up the reinforced section bar in well passageway, and the reinforced section bar is located the junction of curb plate and roof to be connected in curb plate and roof, can effectively improve vehicle body floor's bulk rigidity and collision bearing capacity, satisfy the collision law requirement of automobile body.

Description

Vehicle body floor

Technical Field

The application relates to the field of automobiles, in particular to an automobile body floor.

Background

The vehicle body floor is one of important members constituting a lower portion of a vehicle body, and is mainly used for bearing the weight of a vehicle seat and a passenger, and the vehicle body floor should have sufficient rigidity and strength to meet the requirements of collision regulations. Therefore, how to ensure the rigidity and strength of the vehicle body floor is an important consideration in vehicle body design.

SUMMERY OF THE UTILITY MODEL

The present application aims to provide a vehicle body floor to solve the above problems. The present application achieves the above object by the following technical solutions.

The embodiment of the application provides a vehicle body floor, which comprises a floor body and a reinforcing section bar, wherein the floor body comprises a boss, the boss comprises two oppositely arranged side plates and a top plate connected between the two side plates, and the top plate and the two side plates jointly limit a middle channel; the reinforcing section bar is positioned in the middle channel, is arranged at the joint of the side plate and the top plate and is connected with the side plate and the top plate.

In one embodiment, the two side plates comprise a first side plate and a second side plate, the reinforcing profile comprises a first sub-profile and a second sub-profile, and the first sub-profile is arranged at the joint of the first side plate and the top plate and is connected with the first side plate and the top plate; the second sub-section bars are arranged at the connecting positions of the second side plates and the top plate and are connected to the second side plates and the top plate.

In one embodiment, the vehicle body floor further comprises an inner reinforcement disposed within the central channel and connected between the first side panel and the second side panel, and the first sub-section and the second sub-section are located between the inner reinforcement and the top panel and are both connected to the inner reinforcement.

In one embodiment, the part of the top plate located between the first and second sub-profiles is recessed towards the centre channel and connected to the inner reinforcement to form a reinforcement groove on the side of the top plate facing away from the inner reinforcement.

In one embodiment, the first side plate, the top plate and the inner reinforcement define a first mounting cavity, and the second side plate, the top plate and the inner reinforcement define a second mounting cavity; the first sub-section is arranged in the first mounting cavity, and the appearance of the first sub-section is matched with the first mounting cavity; the second sub-sectional material is arranged in the second mounting cavity, and the appearance of the second sub-sectional material is matched with the second mounting cavity.

In one embodiment, the floor body further comprises a first bottom plate and a second bottom plate, the boss is located between the first bottom plate and the second bottom plate, the first side plate is connected to the first bottom plate, and the second side plate is connected to the second bottom plate; the vehicle body floor further comprises a first side reinforcing piece and a second side reinforcing piece which are positioned outside the middle channel, wherein the first side reinforcing piece is arranged at the joint of the first side plate and the first bottom plate and is connected with the first side plate and the first bottom plate; the second side reinforcing piece is arranged at the joint of the second side plate and the second bottom plate and is connected with the second side plate and the second bottom plate.

In one embodiment, the first side stiffener includes a first connecting plate connected to the first base plate, a second connecting plate connected to the first side plate, and a side supporting plate connected between the first connecting plate and the second connecting plate and spaced apart from the first base plate and the first side plate.

In one embodiment, the floor body further comprises a first flange and a second flange, the first flange is connected to the other side of the first bottom plate opposite to the boss, and an included angle between the first flange and the first bottom plate is 85-95 degrees; the second flanging is connected to the other side of the second base plate opposite to the boss, and the included angle between the second flanging and the second base plate is 85-95 degrees.

In one embodiment, the floor body is a pultruded composite profile.

In one embodiment, a pultruded composite profile includes a first fabric layer, a second fabric layer, and a unidirectional fiber layer, the unidirectional fiber layer being disposed between the first fabric layer and the second fabric layer.

The vehicle body floor provided by the embodiment of the application is provided with the reinforcing section bar in the middle channel, the reinforcing section bar is positioned at the joint of the side plate and the top plate and is connected with the side plate and the top plate, the integral rigidity and the collision bearing capacity of the vehicle body floor can be effectively improved, and the requirement of collision regulations of a vehicle body is met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded schematic view of a vehicle body provided in an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of a vehicle body provided in an embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of the cross-sectional view shown in fig. 2.

Fig. 4 is a schematic cross-sectional view of a composite material section formed by pultrusion in a vehicle body according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 and 3, a vehicle body floor 100 provided by the embodiment of the present application includes a floor body 110 and a reinforcing profile 120, the floor body 110 includes a boss 111, the boss 111 includes two side plates (refer to 1111 and 1112 in fig. 3) and a top plate 113, the two side plates are oppositely disposed, the top plate 1113 is connected between the two side plates, and the top plate 1113 and the two side plates jointly define a middle channel 130; a reinforcing profile 120 is located within the central channel 130, the reinforcing profile 120 being located at the junction of the side and top panels 1113 and attached to the side and top panels 1113.

The connection of the reinforcing section bar 120 to the side plate and the top plate 1113 may mean that the reinforcing section bar 120 is attached to and fixedly connected to the side plate, the reinforcing section bar 120 is attached to and fixedly connected to the top plate 1113, and the fixing connection method is preferably structural adhesive bonding, and may be a connection method such as riveting, screw connection, and the like.

According to the vehicle body floor 100 provided by the embodiment of the application, the reinforcing section bar 120 is arranged on the middle channel 130, the reinforcing section bar 120 is positioned at the joint of the side plate and the top plate 1113 and is connected with the side plate and the top plate 1113, the integral rigidity of the vehicle body floor 100 can be effectively improved, the bearing capacity of bearing forward collision can be effectively improved, and the requirement of collision regulations of a vehicle body can be met.

In this embodiment, the two side plates may include a first side plate 1111 and a second side plate 1112, the first side plate 1111 and the second side plate 1112 are both long plate-shaped structures extending along a first direction, and the first side plate 1111 and the second side plate 1112 are oppositely disposed along a second direction, wherein the first direction is perpendicular to the second direction. The spacing between the first side plate 1111 and the second side plate 1112 may be gradually increased in a direction away from the top plate 1113 to improve the structural stability of the boss 111.

The middle passage 130 is a cavity structure extending along the first direction, and the middle passage 130 penetrates the boss 111 along the first direction. The reinforcing profile 120 is substantially an elongated structure extending along the first direction, and in the first direction, the lengths of the reinforcing profile 120, the first side plate 1111, the second side plate 1112, and the top plate 1113 may be equal. Further, the reinforcing profile 120 is a hollow profile to reduce weight. Of course, in other embodiments, the reinforcing profile 120 may be a solid profile.

In some embodiments, the reinforcing profile 120 may comprise a first sub-profile 121 and a second sub-profile 122, the first sub-profile 121 being provided at the junction of the first side plate 1111 and the top plate 1113 and being connected to the first side plate 1111 and the top plate 1113; the second sub-profile 122 is provided at the junction of the second side plate 1112 and the top plate 1113 and is connected to the second side plate 1112 and the top plate 1113. Thereby, the first and second sub-profiles 121 and 122 can reinforce the first and second side plates 1111 and 1112, respectively, further improving the rigidity and the collision load-bearing capacity of the vehicle body floor 100.

In this embodiment, the first sub-section 121 and the second sub-section 122 may be mirror-symmetrical to each other, so that the stress distribution of the boss 111 is more uniform, and the first sub-section 121 and the second sub-section 122 have the same structure, thereby facilitating the processing and manufacturing.

In other embodiments, the number of the reinforcing profiles 120 may be only one, for example, only one of the first sub-profile 121 and the second sub-profile 122 is included, which can also improve the rigidity and the crash load capacity of the vehicle body floor 100.

In some embodiments, the vehicle body floor 100 further includes an inner reinforcement 140, the inner reinforcement 140 is disposed within the center channel 130 and is coupled between the first side panel 1111 and the second side panel 1112, and the first sub-profile 121 and the second sub-profile 122 are disposed between the inner reinforcement 140 and the top panel 1113 and are both coupled to the inner reinforcement 140. The connection of the first sub-profile 121 and the second sub-profile 122 to the inner reinforcement 140 may mean that the first sub-profile 121 and the second sub-profile 122 are attached to and fixedly connected to the inner reinforcement 140, and the fixing manner is preferably structural adhesive. The inner reinforcement 140 can support the first and second sub-profiles 121 and 122, and can reinforce the first and second side plates 1111 and 1112, thereby further improving the rigidity and the crash load-bearing capacity of the vehicle body floor 100.

In this embodiment, the inner reinforcement member 140 may include a first inner connection plate 141, a second inner connection plate 142, and an inner reinforcement plate 143, wherein the first inner connection plate 141 and the second inner connection plate 142 are disposed opposite to each other, and the inner reinforcement plate 143 is connected between the first inner connection plate 141 and the second inner connection plate 142. The first inner connecting plate 141 is attached to and fixedly connected with the first side plate 1111, the second inner connecting plate 142 is attached to and fixedly connected with the second side plate 1112, the inner reinforcing plate 143 is opposite to the top plate 1113, and the first sub-section 121 and the second sub-section 122 are fixedly connected with the inner reinforcing plate 143. The fixing method between the first inner connecting plate 141 and the first side plate 1111 and between the second inner connecting plate 142 and the second side plate 1112 is preferably structural adhesive, and the first inner connecting plate 141 and the second inner connecting plate 142 can increase the connecting area between the inner reinforcement 140 and the first side plate 1111 and the second side plate 1112, thereby improving the connecting strength between the inner reinforcement 140 and the boss 111.

In some embodiments, the part of the top plate 1113 between the first and second sub-profiles 121, 122 is retracted into the central channel 130 and connected to the inner reinforcement 140 to form a reinforcement groove 150 on the side of the top plate 1113 facing away from the inner reinforcement 140, i.e. the part of the top plate 1113 corresponding to the first and second sub-profiles 121, 122 projects in the direction away from the inner reinforcement 140 relative to the part of the top plate 1113 between the first and second sub-profiles 121, 122, and acts as a reinforcement rib in structure, which can improve the bending resistance of the boss 111; on the other hand, the portion of the top plate 1113 between the first sub-profile 121 and the second sub-profile 122 is connected to the inner reinforcement 140, so that the connection area between the boss 111 and the inner reinforcement 140 is increased, and the connection strength between the inner reinforcement 140 and the boss 111 can be improved.

In this embodiment, the top plate 1113 includes a first connecting portion 1114, a first inclined portion 1115, a recessed portion 1116, a second inclined portion 1117 and a second connecting portion 1118 sequentially arranged along the second direction, the first connecting portion 1114 is connected to the first side plate 1111 and spaced from the inner reinforcing plate 143, the first inclined portion 1115 is connected between the first connecting portion 1114 and the recessed portion 1116, and the recessed portion 1116 is attached to the inner reinforcing plate 143 and fixedly connected to the inner reinforcing plate 143; the second connecting portion 1118 is connected to the second side plate 1112 and spaced apart from the inner reinforcement plate 143, and the second inclined portion 1117 is connected between the second connecting portion 1118 and the recessed portion 1116; the first inclined portion 1115, the recessed portion 1116 and the second inclined portion 1117 define the profile reinforcing groove 150, and a distance between the first inclined portion 1115 and the second inclined portion 1117 gradually increases along the recessed portion 1116 toward the first connecting portion 1114 and the second connecting portion 1118, so that the first inclined portion 1115 and the second inclined portion 1117 may form a triangular support structure, improving fitting stability of the top plate 1113 and the inner reinforcing plate 143.

In some embodiments, the first side plate 1111, the top plate 1113 and the inner reinforcement 140 define a first mounting cavity 131, i.e., the first side plate 1111, the first connection portion 1114, the first inclined portion 1115 and the inner reinforcement plate 143 define the first mounting cavity 131. The second side plate 1112, the top plate 1113, and the inner reinforcement member 140 define the second mounting cavity 132, i.e., the second side plate 1112, the second connecting portion 1118, the second inclined portion 1117, and the inner reinforcement plate 143 define the second mounting cavity 132. The first sub-section 121 is arranged in the first installation cavity 131, and the shape of the first sub-section 121 is adapted to the first installation cavity 131; the second sub-section 122 is disposed in the second mounting cavity 132, and the second sub-section 122 has a shape adapted to the second mounting cavity 132.

Therefore, the outer peripheral surface of the first sub-profile 121 can be attached to the first side plate 1111, the first connecting portion 1114, the first inclined portion 1115 and the inner reinforcing plate 143, and the outer peripheral surface of the second sub-profile 122 can be attached to the second side plate 1112, the second connecting portion 1118, the second inclined portion 1117 and the inner reinforcing plate 143, so that the first sub-profile 121 and the second sub-profile 122 are tightly wrapped between the roof plate 1113 and the inner reinforcing member 140, the connection stability among the boss 111, the reinforcing profile 120 and the inner reinforcing member 140 is improved, and the overall rigidity and the collision bearing capacity of the vehicle body floor 100 can be further improved.

In this embodiment, since the distance between the first and second inclined portions 1115 and 1117 gradually increases along the recessed portion 1116 toward the first and second connecting portions 1114 and 1118, the cross-sections of the first and second sub-profiles 121 and 122 are substantially right-angled trapezoids in order to respectively conform to the first and second inclined portions 1115 and 1117.

In some embodiments, the floor body 110 further includes a first bottom plate 112 and a second bottom plate 113, the boss 111 is located between the first bottom plate 112 and the second bottom plate 113, the first side plate 1111 is connected to the first bottom plate 112, and the second side plate 1112 is connected to the second bottom plate 113. The included angle between the first side plate 1111 and the first bottom plate 112 and the included angle between the second side plate 1112 and the second bottom plate 113 are obtuse angles, so as to improve the connection stability between the first bottom plate 112, the second bottom plate 113 and the boss 111.

The vehicle body floor 100 may further include a first side reinforcement 161 and a second side reinforcement 162 located outside the center tunnel 130, the first side reinforcement 161 being provided at a junction of the first side plate 1111 and the first bottom plate 112 and being connected to the first side plate 1111 and the first bottom plate 112. The second side reinforcement 162 is provided at a junction of the second side plate 1112 and the second base plate 113, and is connected to the second side plate 1112 and the second base plate 113. Thereby, the overall rigidity of the vehicle body floor 100 and the load-bearing capacity against a forward collision can be further enhanced. The first side reinforcement 161 is preferably fixed to the first side plate 1111 and the first bottom plate 112 by structural adhesive, and the second side reinforcement 162 is preferably fixed to the second side plate 1112 and the second bottom plate 113 by structural adhesive.

In some embodiments, the first side stiffener 161 includes a first connection plate 1611, a second connection plate 1612, and a side support plate 1613, the first connection plate 1611 being connected to the first bottom plate 112, the second connection plate 1612 being connected to the first side plate 1111, and the side support plate 1613 being connected between the first connection plate 1611 and the second connection plate 1612 and being spaced apart from the first bottom plate 112 and the first side plate 1111. Wherein, first connecting plate 1611 is connected in first bottom plate 112 can indicate that first connecting plate 1611 and first bottom plate 112 laminating and fixed connection, and second connecting plate 1612 is connected in first side board 1111 can indicate that second connecting plate 1612 and first side board 1111 laminating and fixed connection to improve the stability of being connected of first side reinforcement 161 and first bottom plate 112, first side board 1111, and side fagging 1613 can play the effect of supporting first bottom plate 112 and first side board 1111, and then improve automobile body 100's bulk rigidity and collision bearing capacity.

In this embodiment, the distance between the first connecting plate 1611 and the first side plate 1111 may be smaller than the distance between the second connecting plate 1612 and the first bottom plate 112, that is, the included angle between the side supporting plate 1613 and the first bottom plate 112 is larger than the included angle between the side supporting plate 1613 and the first side plate 1111, so as to improve the assembling stability of the first side reinforcement 161. The second side reinforcement 162 and the first side reinforcement 161 may be mirror images, that is, the structure of the second side reinforcement 162 is the same as that of the first side reinforcement 161, so as to facilitate manufacturing. As for the specific structure of the second side reinforcing member 162, reference may be made to the first side reinforcing member 161, which is not described herein again.

Referring to fig. 1 and 2, in some embodiments, the floor body 110 further includes a first flange 171 and a second flange 172, the first flange 171 is connected to the other side of the first bottom plate 112 opposite to the boss 111 for connecting the first bottom plate 112 and the car body sill panel, and the second flange 172 is connected to the other side of the second bottom plate 113 opposite to the boss 111 for connecting the second bottom plate 113 and the car body sill panel. The included angle between the first turned-over edge 171 and the first bottom plate 112 is 85-95 degrees, the included angle between the second turned-over edge 172 and the second bottom plate 113 is 85-95 degrees, so that the structural design of the side wall structural member such as the doorsill door panel matched with the floor body 110 is simplified.

In this embodiment, the first flange 171, the second flange 172, and the boss 111 protrude toward the same side with respect to the first base plate 112 and the second base plate 113. The included angle between the first flange 171 and the first base plate 112 and the included angle between the second flange 172 and the second base plate 113 are equal, and the first flange 171 and the second flange 172 are mirror images of each other, so as to facilitate processing and manufacturing.

For example, the angle between the first flange 171 and the first base 112 is preferably equal to 90 °, and may be equal to 88 ° or 91 ° or other angles within the range. The angle between the second flange 172 and the second bottom plate 113 is preferably equal to 90 °, and may be equal to 88 ° or 91 ° or other angles within the range.

In some embodiments, the floor body 110 is a pultrusion composite material profile, that is, the floor body 110 is made of a composite material by pultrusion, when the composite material is applied to an automobile body structure, a substantial weight reduction of the automobile body can be achieved, and compared with other processes such as a prepreg autoclave, RTM (Resin Transfer Molded), prepreg molding, the pultrusion process can greatly improve the production efficiency and reduce the manufacturing cost.

In this embodiment, the floor body 110 has a transverse uniform cross-section structure, where the transverse direction is the first direction, that is, the floor body 110 has a uniform cross-section structure in the first direction, so that the floor body 110 can be conveniently manufactured by pultrusion. In other embodiments, the floor body 110 may have a non-uniform cross-section in the first direction, and the floor body can be manufactured by pultrusion, but the process is slightly complicated.

In other embodiments, the boss 111, the first base plate 112 and the second base plate 113 may be manufactured as separate structural members by pultrusion in advance, and then the boss 111, the first base plate 112 and the second base plate 113 are connected by bonding to form an integral structure.

Referring to fig. 1 and 4, in some embodiments, the reinforcing section 120, the inner reinforcing member 140, the first side reinforcing member 161 and the second side reinforcing member 162 are all pultruded composite section 180, that is, the reinforcing section 120, the inner reinforcing member 140, the first side reinforcing member 161 and the second side reinforcing member 162 can be made of composite material by pultrusion, so as to further improve the production efficiency.

In other embodiments, the reinforcing section 120 may be a foam core, such as a PET (polyester resin) foam core, which has good shear and compression properties and is easy to process, and a complex shape structure can be realized by thermoforming.

In other embodiments, the floor body 110, the reinforcing section 120, the inner reinforcement 140, the first side reinforcement 161 and the second side reinforcement 162 may be pultruded at one time without a multi-piece assembly, thereby further improving the production efficiency.

In some embodiments, pultruded composite profile 180 may include a first fabric layer 181, a second fabric layer 182, and a unidirectional fiber layer 183, unidirectional fiber layer 183 being laminated between first fabric layer 181 and second fabric layer 182. Therefore, the pultrusion composite material section bar 180 can be ensured to have a better light weight effect, and the strength requirement of structural connection can be met.

In this embodiment, the unidirectional fiber layer 183 may be any one of carbon fiber, PBO fiber (poly-p-phenylene benzobisoxazole fiber), and aramid fiber, and the first fabric layer 181 and the second fabric layer 182 may be fabric structures woven by mixing glass fiber and PBO fiber, or fabric structures woven by mixing aramid fiber and PBO fiber, which is not specifically limited herein.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A vehicle body floor, characterized by comprising:

the floor comprises a floor body and a bottom plate, wherein the floor body comprises a boss, the boss comprises two oppositely arranged side plates and a top plate connected between the two side plates, and the top plate and the two side plates jointly define a middle channel; and

and the reinforcing section bar is positioned in the middle channel, is arranged at the joint of the side plate and the top plate and is connected with the side plate and the top plate.

2. The vehicle body floor according to claim 1, wherein the two side panels include a first side panel and a second side panel, and the reinforcing profile includes a first sub-profile and a second sub-profile, the first sub-profile being provided at a junction of the first side panel and the top panel and being connected to the first side panel and the top panel; the second sub-section is arranged at the joint of the second side plate and the top plate and is connected with the second side plate and the top plate.

3. The vehicle body floor of claim 2, further comprising an inner reinforcement disposed within the central channel and coupled between the first side panel and the second side panel, the first and second sub-profiles being positioned between the inner reinforcement and the top panel and both coupled to the inner reinforcement.

4. The vehicle body floor according to claim 3, wherein a portion of the top panel between the first and second sub-profiles is recessed toward the center tunnel and connected to the inner reinforcement to form a reinforcement groove at a side of the top panel facing away from the inner reinforcement.

5. The vehicle body floor of claim 4, wherein the first side plate, the top plate, and the inner reinforcement define a first mounting cavity, and the second side plate, the top plate, and the inner reinforcement define a second mounting cavity; the first sub-sectional material is arranged in the first mounting cavity, and the appearance of the first sub-sectional material is matched with the first mounting cavity; the second sub-sectional material is arranged in the second mounting cavity, and the appearance of the second sub-sectional material is matched with the second mounting cavity.

6. The vehicle body floor of claim 2, wherein the floor body further comprises a first bottom panel and a second bottom panel, the boss being located between the first bottom panel and the second bottom panel, the first side panel being connected to the first bottom panel, the second side panel being connected to the second bottom panel;

the vehicle body floor further comprises a first side reinforcing piece and a second side reinforcing piece which are positioned outside the middle channel, wherein the first side reinforcing piece is arranged at the joint of the first side plate and the first bottom plate and is connected with the first side plate and the first bottom plate; the second side reinforcing piece is arranged at the joint of the second side plate and the second bottom plate and is connected with the second side plate and the second bottom plate.

7. The vehicle body floor according to claim 6, wherein the first side reinforcement includes a first connecting plate connected to the first bottom plate, a second connecting plate connected to the first side plate, and a side supporting plate connected between the first connecting plate and the second connecting plate and disposed at a distance from the first bottom plate and the first side plate.

8. The vehicle body floor according to claim 6, wherein the floor body further comprises a first flange and a second flange, the first flange is connected to the other side of the first bottom plate opposite to the boss, and an included angle between the first flange and the first bottom plate is 85-95 degrees; the second flanging is connected to the other side, opposite to the boss, of the second base plate, and the included angle between the second flanging and the second base plate is 85-95 degrees.

9. The vehicle body floor of any of claims 1-8, wherein the floor body is a pultruded composite profile.

10. The vehicle body floor of claim 9, wherein the pultruded composite profile comprises a first fabric layer, a second fabric layer, and a unidirectional fiber layer, the unidirectional fiber layer being disposed between the first fabric layer and the second fabric layer.

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