CN214296141U

CN214296141U - B-pillar lower hinge reinforcing plate assembly

Info

Publication number: CN214296141U
Application number: CN202022003008.7U
Authority: CN
Inventors: 付军鹏
Original assignee: IAT Automobile Technology Co Ltd
Current assignee: IAT Automobile Technology Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-09-28
Anticipated expiration: 2030-09-14

Abstract

The utility model relates to a hinge reinforcing plate subassembly under B post belongs to the technical field of automobile design and manufacturing. The utility model discloses a B post lower hinge reinforcing plate structure includes B post reinforcing plate and lower hinge reinforcing plate, is provided with the energy-absorbing region on the B post reinforcing plate, and the round angle department in the upper end both sides in energy-absorbing region is provided with the triangle muscle, and the lower extreme middle part in energy-absorbing region sets up through column muscle, and the region between the horizontal line of the triangle muscle of both sides and the horizontal line through column muscle is defined as the energy-absorbing region; and the middle part of the energy absorption area is provided with an installation through hole, and the lower hinge reinforcing plate is fixed on the outer side of the B-column reinforcing plate through a projection welding nut penetrating through the installation through hole. The utility model discloses a hinge reinforcing plate subassembly has ingeniously set up the structure that the induced B post warp under the B post for the deformation of B post accords with the design expectation when the side bumps.

Description

B-pillar lower hinge reinforcing plate assembly

Technical Field

The utility model relates to a technical field of automobile design and manufacturing, more specifically say, the utility model relates to a hinge reinforcing plate subassembly under B post.

Background

The prior art B-pillar lower hinge reinforcing plate structure mainly comprises the following two structural forms:

1) as shown in fig. 1, the lower hinge reinforcing plate structure is 1 integral part, the distance from the lower boundary of the hinge reinforcing plate to the doorsill is too small, and the Z-direction deformation space of the B-pillar during side collision is too small, so that deformation and absorption of collision energy are not facilitated.

2) As shown in fig. 2, the lower hinge reinforcing plate is a single small part, but is welded to the inside of the B-pillar reinforcing plate, which results in a larger Y-direction cross-sectional dimension in this region of the B-pillar, which is not conducive to deformation and energy absorption, and is not conducive to the press forming of the B-pillar reinforcing plate.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned technical problem that exists among the prior art, the utility model aims to provide a hinge reinforcing plate subassembly under B post.

The utility model discloses a B post lower hinge reinforcing plate structure, including B post reinforcing plate and lower hinge reinforcing plate, be provided with the energy-absorbing region on the B post reinforcing plate, the upper end both sides corner department in energy-absorbing region is provided with the triangle muscle, set up through-type column muscle in the lower extreme middle part in energy-absorbing region, the horizontal line of the triangle muscle of both sides and the region between the horizontal line that passes through-type column muscle define as the energy-absorbing region; and the middle part of the energy absorption area is provided with a mounting through hole, the projection welding nut is welded on the lower hinge reinforcing plate to form a lower hinge reinforcing plate assembly, and the lower hinge reinforcing plate assembly is fixed on the outer side of the B column reinforcing plate.

The periphery of the lower hinge reinforcing plate is provided with a welding surface, and the welding surface is welded with the B-pillar reinforcing plate, so that a closed box structure is formed between the lower hinge reinforcing plate and the B-pillar reinforcing plate.

And energy absorption ribs which are sunken towards the direction of the B column inner plate are arranged on the side edges of the through type columnar ribs.

Compared with the prior art, the utility model discloses a hinge reinforcing plate structure has following beneficial effect under the B post:

1) the hinge reinforcing plate is an independent part, and the size reduction can ensure that the deformation space of the B-pillar reinforcing plate in the Z direction is larger, thereby being more beneficial to deformation;

2) the hinge reinforcing plate is welded on the outer side of the B-column reinforcing plate, so that the Y-direction section size of the B-column reinforcing plate is reduced, the B-column structure is weakened, the Y-direction deformation space is larger, and the stamping formability of the B-column reinforcing plate is facilitated;

3) the structure for inducing the B column to deform is skillfully arranged, so that the deformation of the B column during side collision meets the design expectation;

4) the laser welding process is reduced, and the manufacturing cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a B-pillar lower hinge reinforcing plate assembly in the prior art.

Fig. 2 is a schematic structural diagram of another B-pillar lower hinge reinforcing plate assembly in the prior art.

Fig. 3 is the structure diagram of the hinge reinforcing plate assembly under the B-pillar of the present invention.

Fig. 4 shows the position of the B-pillar lower hinge reinforcement assembly in the body frame according to the present invention.

Fig. 5 is a schematic cross-sectional view taken along the direction B-B in fig. 3.

Fig. 6 is an exploded view of the B-pillar lower hinge reinforcing plate assembly of the present invention.

Fig. 7 is the utility model discloses a B post deformation chart after the collision of hinge reinforcing plate subassembly under B post.

Detailed Description

The present invention will be further described with reference to the following embodiments to help those skilled in the art to understand the technical solution of the present invention more completely, accurately and deeply.

Example 1

People have higher and higher requirements on automobile safety, the application proportion of the hot forming steel plate on an automobile is higher and higher along with the development of automobile materials, and in order to improve the collision safety, most of the B column reinforcing plates of newly developed automobile types adopt hot forming steel plates, so that when the side face of a vehicle is impacted, a B column deforms according to the trend of being beneficial to protecting passengers and reducing the acceleration in collision. The area above the upper hinge of the B column corresponds to the chest and the head of a human body, the part should not generate deformation which can cause fatal injury to the human body such as failure, bending and excessive space invasion of a cockpit, and the area of the lower hinge of the B column corresponds to the hip of the human body and the framework of a seat, the part generates bending deformation, absorbs part of kinetic energy during collision, and reduces the peak value of acceleration. The inventor finds that the deformation of the region is greatly influenced by the lower hinge reinforcing plate of the B column, and the hinge reinforcing plate can block the deformation of the B column and is not beneficial to the absorption of kinetic energy. The design concept of this embodiment starts with overcoming this hindering deformation and guiding the design deformation of the B-pillar lower hinge reinforcement plate area to facilitate the deformation in the direction of human body protection and to improve the Z-direction deformation area and the Y-direction energy absorption space of the B-pillar lower hinge area. Based on this design concept, the present embodiment provides a B-pillar lower hinge reinforcement plate assembly as shown in fig. 3-6, which includes a B-pillar reinforcement plate 10 and a lower hinge reinforcement plate 20, for a B-pillar reinforcement plate made of hot-formed steel plate with high yield strength and high tensile strength. Fig. 4 shows the position of the B-pillar lower hinge reinforcement plate assembly of the present embodiment in the vehicle body frame, i.e., region a in the drawing. In the embodiment, the B-pillar reinforcing plate is a hot forming part, the yield strength is not less than 950MPa, the tensile strength is not less than 1300MPa, and the hot forming part with the mechanical property can ensure that the bending and the invasion do not occur when the area above the upper hinge of the B-pillar is subjected to side impact. Specifically, triangular ribs 11 are arranged at the round corners at two sides of the upper end of the energy absorption area Z, a through-type columnar rib 12 is arranged in the middle of the lower end of the energy absorption area Z, and energy absorption ribs 15 which are sunken towards the B-pillar inner plate 40 are arranged on the side edges of the through-type columnar rib 12. The area between the horizontal line of the triangular ribs 11 on the two sides and the horizontal line passing through the through-type columnar rib 12 is defined as the energy absorption area. The horizontal connecting line of the triangular ribs 11 at the two sides is a preset bending area. And a mounting through hole 13 is formed in the middle of the energy absorption area Z. The projection welding nut 30 is welded on the lower hinge reinforcing plate 20 to form a lower hinge reinforcing plate assembly for mounting a door hinge, the lower hinge reinforcing plate 20 is fixed on the outer side of the B-pillar reinforcing plate 10, a welding surface 21 is arranged on the periphery of the lower hinge reinforcing plate 20, and the welding surface 21 is welded with the B-pillar reinforcing plate 10 to form a closed box structure between the lower hinge reinforcing plate 20 and the B-pillar reinforcing plate 10.

The B-pillar lower hinge reinforcing plate structure is adopted in cars and SUV vehicles, the lower hinge reinforcing plate is designed into an independent part, the size of the lower hinge reinforcing plate is correspondingly reduced, a Z-direction deformation area is enlarged, more collision energy can be absorbed, an energy-absorbing rib for inducing deformation is designed on the B-pillar reinforcing plate, a triangular rib is designed at the position of a round corner at the upper boundary of the hinge reinforcing plate, a through-type cylindrical rib is designed at the lower boundary, and the deformation during side collision can be induced to exceed the direction development of the design. The hinge reinforcing plate is welded on the outer side of the B-pillar reinforcing plate, so that the Y-direction size of the B-pillar reinforcing plate can be reduced, punch forming is facilitated, a concave structure can be formed in the area between the B-pillar and the doorsill, and deformation of the B-pillar is facilitated. Fig. 7 shows a schematic deformation diagram of a vehicle side impact during a verification experiment, and it can be seen that deformation is mainly concentrated in a set deformation region Z, and a bending point occurs in a designed and predetermined bending region, so that the side impact safety of the whole vehicle can be effectively improved.

For those skilled in the art, the specific embodiments are only exemplary descriptions of the present invention, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements are all within the protection scope of the present invention as long as the technical solution of the present invention is adopted.

Claims

1. The utility model provides a hinge reinforcing plate subassembly under B post, includes B post reinforcing plate and hinge reinforcing plate down, its characterized in that: the B-pillar reinforcing plate is provided with an energy absorption area, round corners on two sides of the upper end of the energy absorption area are provided with triangular ribs, the middle of the lower end of the energy absorption area is provided with a through-type columnar rib, and an area between a horizontal connecting line of the triangular ribs on the two sides and a horizontal line passing through the through-type columnar rib is defined as the energy absorption area; and a mounting through hole is formed in the middle of the energy absorption area, a projection welding nut is welded on the lower hinge reinforcing plate to form a lower hinge reinforcing plate assembly, and the lower hinge reinforcing plate assembly is fixed on the outer side of the B-column reinforcing plate.

2. The B-pillar lower hinge gusset assembly of claim 1, wherein: the periphery of the lower hinge reinforcing plate is provided with a welding surface, and the welding surface is welded with the B-pillar reinforcing plate, so that a closed box structure is formed between the lower hinge reinforcing plate and the B-pillar reinforcing plate.

3. The B-pillar lower hinge gusset assembly of claim 1, wherein: and energy absorption ribs which are sunken towards the direction of the B column inner plate are arranged on the side edges of the through type columnar ribs.