CN115158475A - Reinforcement on A post, side wall assembly and vehicle with inhomogeneous honeycomb inner core - Google Patents
Reinforcement on A post, side wall assembly and vehicle with inhomogeneous honeycomb inner core Download PDFInfo
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- CN115158475A CN115158475A CN202210735059.XA CN202210735059A CN115158475A CN 115158475 A CN115158475 A CN 115158475A CN 202210735059 A CN202210735059 A CN 202210735059A CN 115158475 A CN115158475 A CN 115158475A
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- reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/04—Door pillars ; windshield pillars
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Abstract
The invention discloses an A-pillar upper reinforcement with a non-uniform honeycomb inner core, a side wall assembly and a vehicle, which comprise a long-strip-shaped arc-shaped A-pillar upper reinforcement body, wherein a closed cavity extending along the length direction is arranged in the A-pillar upper reinforcement body, a honeycomb-shaped inner core is connected in the closed cavity, the inner core comprises a plurality of hollow honeycomb units which are uniformly attached and arranged, the axial lead of each honeycomb unit is parallel to the axial lead of the closed cavity, adjacent honeycomb units are coaxially arranged in the length direction of the closed cavity, and the lengths of the adjacent honeycomb units are different in the radial direction of the closed cavity. It can promote automobile body rigidity and whole car crashworthiness, effectively widens the attraction frequency range, promotes the reinforcement and inhales the sound performance under different wave bands on the A post.
Description
Technical Field
The invention relates to the field of automobile bodies, in particular to an A-pillar upper reinforcement with a non-uniform honeycomb inner core, a side wall assembly and a vehicle.
Background
Along with the gradual popularization of automobiles, people have higher and higher requirements on the automobile performance, and high collision safety and NVH (noise vibration and harshness) performance are required while good dynamic performance and economy are obtained. Meanwhile, the stricter regulations on the collision safety of the automobile also put forward higher requirements on the structural design of the automobile body.
The reinforcement on the A column is positioned between the engine compartment and the cab and above the front door. The traditional automobile A column assembly is formed by welding common steel or high-strength steel, so that the visual field blind area is large, and the driving safety is not facilitated. Meanwhile, the position of the A-pillar assembly corresponding to the rearview mirror is one of automobile noise sources, and the traditional A-pillar tailor-welded structure hardly contributes to the performance of NVH. Therefore, how to improve the collision safety performance of the reinforcement on the A column and reduce the visual field blind area and improve the NVH performance becomes a difficult problem in the industry.
Disclosure of Invention
The invention aims to provide an A-pillar upper reinforcement with a non-uniform honeycomb inner core, a side wall assembly and a vehicle, which can improve the rigidity of the vehicle body and the collision performance of the whole vehicle, effectively broaden the range of suction frequency and improve the sound absorption performance of the A-pillar upper reinforcement under different wave bands.
The invention relates to an A-pillar upper reinforcement with a non-uniform honeycomb inner core, which comprises a long-strip-shaped arc-shaped A-pillar upper reinforcement body, wherein a closed cavity extending along the length direction is arranged in the A-pillar upper reinforcement body, a honeycomb-shaped inner core is connected in the closed cavity, the inner core comprises a plurality of hollow honeycomb units which are uniformly attached and arranged, the axial lead of each honeycomb unit is parallel to the axial lead of the closed cavity, adjacent honeycomb units are coaxially arranged in the length direction of the closed cavity, and the lengths of the adjacent honeycomb units are different in the radial direction of the closed cavity.
Furthermore, the cross section of the honeycomb unit is a regular hexagon with the side length being more than or equal to 2mm.
Further, the material of the reinforcement body on the A column is a continuous fiber reinforced composite material with a three-dimensional weaving structure, an aluminum alloy section and ultrahigh-strength steel with tensile strength of more than or equal to 1500MPa, and the material of the inner core is at least one of polypropylene, nylon, polyurethane, phenolic resin, a polypropylene composite material, a nylon composite material, a polyurethane composite material, a phenolic resin composite material and an aluminum alloy section.
Further, the length of the honeycomb unit is more than or equal to 2mm.
Further, the inner core is connected with the closed cavity through gluing or integral forming.
Further, the difference in length between the adjacent honeycomb units in the radial direction of the closed cavity is 1mm.
Further, the wall thickness of the A column upper reinforcement body is more than or equal to 1.2mm.
Furthermore, the A-pillar upper reinforcement body comprises a front section, a transition section and a rear section which are sequentially connected from front to back, and the arc radius of the transition section is more than or equal to 600mm.
The utility model provides a side wall assembly, includes reinforcement, B post reinforcement, C post reinforcement under the A post and foretell reinforcement on the A post that has heterogeneous honeycomb inner core, tip and A post reinforcement upper end rear side are connected under the reinforcement body on the A post, reinforcement body middle section and B post reinforcement top are connected on the A post, tip and C post reinforcement upper end front side are connected on the A post.
A vehicle comprises the side wall assembly.
According to the invention, the honeycomb-shaped inner core is connected in the closed cavity of the reinforcement body on the A column, so that the rigidity and the energy absorption effect of the reinforcement body on the A column are effectively improved, the collision safety performance of an automobile can be further improved on the premise of not increasing the section size, the front row member cabin is ensured not to deform, and the requirement of light weight of an automobile body is met. And because the inner core includes a plurality of hollow honeycomb units of even laminating range, the axial lead of honeycomb unit is parallel with the axial lead of closed cavity, and on closed cavity length direction, adjacent honeycomb unit is coaxial to be arranged, and on closed cavity radial direction, adjacent honeycomb unit's length diverse has effectively widened and has attracted the frequency range, has promoted the sound absorption performance of reinforcement under different wave bands on the A post to whole car NVH performance has been promoted.
Drawings
FIG. 1 is a schematic structural view of a reinforcement body on an A-pillar according to the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the honeycomb unit of the present invention;
FIG. 4 is a schematic structural view of a side panel assembly;
fig. 5 is a schematic view of the offset collision score of the side wall assembly according to the first embodiment to the third embodiment of the invention.
Fig. 6 is a diagram of sound transmission loss of the side wall assembly according to the first to third embodiments of the present invention at different frequencies.
In the figure, 1-a pillar upper reinforcement body, 2-inner core, 21-honeycomb unit, 3-a pillar lower reinforcement, 4-B pillar reinforcement, 5-C pillar reinforcement.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Embodiment one, referring to fig. 1 to 3, the a-pillar upper reinforcement with a non-uniform honeycomb core comprises an a-pillar upper reinforcement body 1 in an elongated arc shape, wherein the a-pillar upper reinforcement body 1 comprises a front section, a transition section and a rear section which are sequentially connected from front to rear, the arc radius R of the transition section is 600mm, and the wall thickness t of the a-pillar upper reinforcement body 1 is 1.2mm.
Be equipped with the closed cavity that extends along length direction in the reinforcement body 1 on the A post, be connected with in the closed cavity and be honeycomb inner core 2, inner core 2 is through integrated into one piece technology and reinforcement body 1 lug connection on the A post. The inner core 2 comprises a plurality of hollow honeycomb units 21 which are uniformly attached and arranged, and the cross section of each honeycomb unit is a regular hexagon with the side length of 2mm. The axial lead of the honeycomb units 21 is parallel to the axial lead of the closed cavity, the adjacent honeycomb units 21 are coaxially arranged in the length direction of the closed cavity, and the lengths of the adjacent honeycomb units 21 are different in the radial direction of the closed cavity.
Referring to fig. 3, in a certain section of the cut inner core, the lengths a, b and c of three honeycomb units 21 adjacent to each other from top to bottom are 2mm, 3mm and 4mm in sequence.
The material of the A-pillar upper reinforcement body 1 is a continuous fiber reinforced composite material with a three-dimensional woven structure, and the material of the inner core 2 is a polypropylene composite material.
The utility model provides a side wall assembly, includes reinforcement, B post reinforcement, C post reinforcement under the A post and foretell reinforcement on the A post that has heterogeneous honeycomb inner core, reinforcement body front end and A post reinforcement upper end rear side are glued and are connected under A post goes up reinforcement body, reinforcement body middle section and B post reinforcement top splice on the A post, tip and C post reinforcement upper end front side splice on the A post. And evaluating the side wall assembly based on the evaluation rule of the Mitsui-Saiki CIASI, wherein the rating result is 'G'.
The second embodiment is a reinforcement on A post with a non-uniform honeycomb inner core, which comprises a reinforcement body 1 on A post in a long strip arc shape, wherein the reinforcement body 1 on A post comprises a front section, a transition section and a rear section which are sequentially connected from front to back, the arc radius R of the transition section is 800mm, and the wall thickness t of the reinforcement body 1 on A post is 1.4mm.
Be equipped with the closed cavity that extends along length direction in the reinforcement body 1 on the A post, closed cavity in-connection has and is honeycomb inner core 2, inner core 2 is through gluing process and the 1 lug connection of reinforcement body on the A post. The inner core 2 comprises a plurality of hollow honeycomb units 21 which are uniformly attached and arranged, and the cross section of each honeycomb unit is a regular hexagon with the side length of 4mm. The axial lead of the honeycomb unit 21 is parallel to the axial lead of the closed cavity, the adjacent honeycomb units 21 are coaxially arranged in the length direction of the closed cavity, and the lengths of the adjacent honeycomb units 21 are different in the radial direction of the closed cavity.
Referring to fig. 3, in a certain section of the cut inner core, the lengths a, b and c of three adjacent honeycomb units 21 from top to bottom are 4mm, 5mm and 6mm in sequence.
The material of the A-column upper reinforcement body 1 and the inner core 2 is 6 series aluminum alloy sections, and the A-column upper reinforcement is integrally formed by pultrusion of the aluminum alloy sections.
The utility model provides a side wall assembly, includes reinforcement, B post reinforcement, C post reinforcement and the foretell reinforcement on the A post that has heterogeneous honeycomb inner core under the A post, reinforcement upper end rear side welding under tip and the A post under the reinforcement body on the A post, reinforcement body middle section and B post reinforcement top welding on the A post, tip and C post reinforcement upper end front side welding behind the reinforcement body on the A post. And evaluating the side wall assembly based on the evaluation rule of the Mitsui-Saiki CIASI, wherein the rating result is 'G'.
In the third embodiment, the A-pillar upper reinforcement with the non-uniform honeycomb inner core comprises an A-pillar upper reinforcement body 1 in the shape of a long strip arc, wherein the A-pillar upper reinforcement body 1 comprises a front section, a transition section and a rear section which are sequentially connected from front to back, the arc radius R of the transition section is 1000mm, and the wall thickness t of the A-pillar upper reinforcement body 1 is 1.6mm.
Be equipped with the closed cavity that extends along length direction in the reinforcement body 1 on the A post, closed cavity in-connection has and is honeycomb inner core 2, inner core 2 is through gluing process and reinforcement body 1 lug connection on the A post. The inner core 2 comprises a plurality of hollow honeycomb units 21 which are uniformly attached and arranged, and the cross section of each honeycomb unit is a regular hexagon with the side length of 3 mm. The axial lead of the honeycomb unit 21 is parallel to the axial lead of the closed cavity, the adjacent honeycomb units 21 are coaxially arranged in the length direction of the closed cavity, and the lengths of the adjacent honeycomb units 21 are different in the radial direction of the closed cavity.
Referring to fig. 3, in a certain section of the cut inner core, the lengths a, b and c of three honeycomb units 21 adjacent to each other from top to bottom are 4mm, 5mm and 6mm in sequence.
The material of reinforcement body 1 on the A post is the martensite steel that tensile strength is 1700MPa, the material of inner core 2 is polyurethane composite.
The utility model provides a side wall assembly, includes reinforcement, B post reinforcement, C post reinforcement under the A post and foretell reinforcement on the A post that has heterogeneous honeycomb inner core, reinforcement body front end and A post reinforcement upper end rear side welding under the A post, reinforcement body middle section and B post reinforcement top welding on the A post, reinforcement body rear end and C post reinforcement upper end front side welding on the A post. And evaluating the side wall assembly based on the evaluation rule of the Mitsui-Saiki CIASI, wherein the rating result is 'G'.
The rating result of the side wall assembly of the first embodiment to the third embodiment based on the evaluation rule of the centre-in-the-sun CIASI is G, which shows that the overall crash performance of the side wall assembly is better, and the requirements of the vehicle body crash performance are met.
This application the closed cavity in-connection of reinforcement body on the A post has been the cellular inner core, has effectively promoted the rigidity and the energy-absorbing effect of reinforcement body on the A post, and then can promote car collision security performance under the prerequisite that does not increase the cross-sectional dimension, guarantees that front row member cabin is indeformable, has satisfied the lightweight requirement of automobile body. And because the inner core includes a plurality of hollow honeycomb units of even laminating range, the axial lead of honeycomb unit is parallel with the axial lead of closed cavity, and on closed cavity length direction, adjacent honeycomb unit is coaxial to be arranged, and on closed cavity radial direction, adjacent honeycomb unit's length diverse has effectively widened and has attracted the frequency range, has promoted the sound absorption performance of reinforcement under different wave bands on the A post to whole car NVH performance has been promoted.
Embodiment four includes the side wall assembly of any of embodiments one through three.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a reinforcement on A post with heterogeneous honeycomb inner core, is including being reinforcement body (1) on the A post of rectangular arc, be equipped with the closed cavity that extends along length direction in reinforcement body (1) on the A post, its characterized in that: the utility model discloses a honeycomb structure, including closed cavity, inner core (2) are connected with and are honeycomb inner core (2) in the closed cavity, hollow honeycomb unit (21) that inner core (2) include a plurality of even laminating arrangements, the axial lead of honeycomb unit (21) is parallel with the axial lead of closed cavity, and on closed cavity length direction, adjacent honeycomb unit (21) are coaxial to be arranged, and on closed cavity radial direction, the length diverse of adjacent honeycomb unit (21).
2. The A-pillar stiffener with non-uniform cellular core of claim 1, wherein: the cross section of the honeycomb unit (21) is a regular hexagon with the side length being more than or equal to 2mm.
3. The a-pillar upper reinforcement with non-uniform cellular core of claim 1 or 2, wherein: the material of the A-pillar upper reinforcement body (1) is at least one of a continuous fiber reinforced composite material with a three-dimensional woven structure, an aluminum alloy section and ultrahigh-strength steel with tensile strength of more than or equal to 1500MPa, and the material of the inner core (2) is at least one of polypropylene, nylon, polyurethane, phenolic resin, a polypropylene composite material, a nylon composite material, a polyurethane composite material, a phenolic resin composite material and an aluminum alloy section.
4. The a-pillar upper reinforcement with a non-uniform cellular core of claim 1 or 2, wherein: the length of the honeycomb unit (21) is more than or equal to 2mm.
5. The a-pillar upper reinforcement with non-uniform cellular core of claim 1 or 2, wherein: the inner core (2) is connected with the closed cavity through gluing or integral forming.
6. The a-pillar upper reinforcement with non-uniform cellular core of claim 1 or 2, wherein: the length difference of the adjacent honeycomb units (21) in the radial direction of the closed cavity is 1mm.
7. The a-pillar upper reinforcement with a non-uniform cellular core of claim 1 or 2, wherein: the wall thickness of the A column upper reinforcement body (1) is more than or equal to 1.2mm.
8. The a-pillar upper reinforcement with non-uniform cellular core of claim 1 or 2, wherein: the A-pillar upper reinforcement body (1) comprises a front section, a transition section and a rear section which are sequentially connected from front to back, and the arc radius of the transition section is more than or equal to 600mm.
9. The utility model provides a side wall assembly which characterized in that: the A column upper reinforcement with the non-uniform honeycomb inner core comprises an A column lower reinforcement (3), a B column reinforcement (4), a C column reinforcement (5) and the A column upper reinforcement with the non-uniform honeycomb inner core, wherein the front end part of the A column upper reinforcement body (1) is connected with the rear side of the upper end of the A column lower reinforcement (3), the middle section of the A column upper reinforcement body (1) is connected with the top end of the B column reinforcement (4), and the rear end part of the A column upper reinforcement body (1) is connected with the front side of the upper end of the C column reinforcement (5).
10. A vehicle, characterized in that: including the side wall assembly of claim 9.
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CN202210735059.XA CN115158475A (en) | 2022-06-27 | 2022-06-27 | Reinforcement on A post, side wall assembly and vehicle with inhomogeneous honeycomb inner core |
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CN202210735059.XA CN115158475A (en) | 2022-06-27 | 2022-06-27 | Reinforcement on A post, side wall assembly and vehicle with inhomogeneous honeycomb inner core |
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JP2005098067A (en) * | 2003-08-26 | 2005-04-14 | Sekisui Chem Co Ltd | Sound absorbing panel and sound absorbing method |
DE202004002363U1 (en) * | 2004-02-13 | 2004-04-22 | Deutsche Bahn Ag | Broad band sound absorber has a honeycomb structure of interlocking slotted plates to form resonance chambers of varying depth and closed at the bottom end |
US20160159028A1 (en) * | 2013-07-15 | 2016-06-09 | Armstrong World Industries, Inc. | Acoustical structure |
CN108116205A (en) * | 2018-01-10 | 2018-06-05 | 延锋彼欧汽车外饰系统有限公司 | A kind of reinforcer for tailgate of vehicles inner panel |
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