CN112249166A - B-pillar lower hinge reinforcing plate assembly - Google Patents
B-pillar lower hinge reinforcing plate assembly Download PDFInfo
- Publication number
- CN112249166A CN112249166A CN202010963166.9A CN202010963166A CN112249166A CN 112249166 A CN112249166 A CN 112249166A CN 202010963166 A CN202010963166 A CN 202010963166A CN 112249166 A CN112249166 A CN 112249166A
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- Prior art keywords
- reinforcing plate
- lower hinge
- pillar
- column
- hinge reinforcing
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 86
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 8
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D5/00—Construction of single parts, e.g. the parts for attachment
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/531—Doors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a B-pillar lower hinge reinforcing plate assembly, and belongs to the technical field of automobile design and manufacture. The B-pillar lower hinge reinforcing plate structure comprises a B-pillar reinforcing plate and a lower hinge reinforcing plate, wherein an energy absorption area is arranged on the B-pillar reinforcing plate, and an area between a horizontal connecting line of triangular ribs on two sides and a horizontal line passing through a through type columnar rib is defined as the energy absorption area; the projection welding nut is welded on the lower hinge reinforcing plate to form a lower hinge reinforcing plate component for mounting the vehicle door hinge; the lower hinge reinforcing plate component is fixed on the outer side of the B-column reinforcing plate, and the welding surface of the periphery of the lower hinge reinforcing plate is welded with the B-column reinforcing plate, so that a closed box structure is formed between the lower hinge reinforcing plate and the B-column reinforcing plate. According to the invention, the structure for inducing the deformation of the B column is ingeniously arranged on the B column lower hinge reinforcing plate component, so that the deformation of the B column during side collision meets the design expectation, and the side collision safety of the whole vehicle is effectively improved.
Description
Technical Field
The invention relates to the technical field of automobile design and manufacture, in particular to a B-pillar lower hinge reinforcing plate assembly.
Background
The prior art B-pillar lower hinge reinforcing plate structure mainly comprises the following 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.
3) The B column reinforcing plate adopts a laser tailor-welded plate, the material thickness of the position above the lower hinge is large, the material thickness of the position below the lower hinge is small, blanks made of different materials are formed through laser welding, the blanks are formed through hot stamping, the material thickness of the lower area is small, and the area deforms and absorbs energy. Since the number of laser welding steps is increased, the cost is high, and the strength of the welded portion is reduced.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a B-pillar lower hinge reinforcing plate assembly.
The B-pillar lower hinge reinforcing plate structure comprises a B-pillar reinforcing plate and a lower hinge reinforcing plate, wherein the B-pillar reinforcing plate adopts a hot forming part with high yield strength and high tensile strength, an energy absorption area is arranged on the B-pillar reinforcing plate, triangular ribs are arranged at circular corners at two sides of the upper end of the energy absorption area, a through type columnar rib is arranged in the middle of the lower end of the energy absorption area, and an area between a horizontal connecting line of the triangular ribs at two sides and a horizontal line passing through the through type columnar rib is defined as the energy absorption area; the middle part of the energy absorption area is provided with an installation through hole, the projection welding nut is welded on the lower hinge reinforcing plate to form a lower hinge reinforcing plate assembly, 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 column reinforcing plate to form a closed box body structure between the lower hinge reinforcing plate and the B column reinforcing plate.
The yield strength of the B-column reinforcing plate is more than or equal to 950MPa, and the tensile strength of the B-column reinforcing plate is more than or equal to 1300 MPa.
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 B-pillar lower hinge reinforcing plate structure has the following beneficial effects:
1) the hinge reinforcing plate is an independent part, so that the deformation space of the B-pillar reinforcing plate in the Z direction is larger, and the deformation is facilitated;
2) the hinge reinforcing plate is welded on the outer side of the B-column reinforcing plate, and only the periphery of the hinge reinforcing plate is welded with 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 a schematic structural view of a B-pillar lower hinge reinforcing plate assembly according to the present invention.
Fig. 4 shows the position of the B-pillar lower hinge reinforcement plate assembly of the present invention in the vehicle body frame.
Fig. 5 is a schematic cross-sectional view taken along the direction B-B in fig. 3.
Fig. 6 is an exploded view of a B-pillar lower hinge gusset assembly of the present invention.
FIG. 7 is a deformation diagram of a B-pillar after a collision of the lower hinge gusset assembly of the B-pillar of the present invention.
Detailed Description
The present invention will be further described with reference to specific embodiments, which will help those skilled in the art to more fully, accurately and deeply understand the technical solution of the present invention.
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 specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial modifications made by the technical solution of the present invention are within the protection scope of the present invention.
Claims (3)
1. A B-pillar lower hinge reinforcing plate assembly comprises a B-pillar reinforcing plate and a lower hinge reinforcing plate, wherein the B-pillar reinforcing plate is a hot forming part with high yield strength and high tensile strength, an energy absorption area is arranged on the B-pillar reinforcing plate, triangular ribs are arranged at circular corners on two sides of the upper end of the energy absorption area, a through type columnar rib is arranged in the middle of the lower end of the energy absorption area, and an area between a horizontal connecting line of the triangular ribs on two sides and a horizontal line passing through the through type columnar rib is defined as the energy absorption area; the middle part of the energy absorption area is provided with an installation through hole, the projection welding nut is welded on the lower hinge reinforcing plate to form a lower hinge reinforcing plate assembly, 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 column reinforcing plate to form a closed box body structure between the lower hinge reinforcing plate and the B column reinforcing plate.
2. The B-pillar lower hinge gusset assembly of claim 1, wherein: the yield strength of the B column reinforcing plate is more than or equal to 950MPa, and the tensile strength is more than or equal to 1300 MPa.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010963166.9A CN112249166A (en) | 2020-09-14 | 2020-09-14 | B-pillar lower hinge reinforcing plate assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010963166.9A CN112249166A (en) | 2020-09-14 | 2020-09-14 | B-pillar lower hinge reinforcing plate assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112249166A true CN112249166A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010963166.9A Pending CN112249166A (en) | 2020-09-14 | 2020-09-14 | B-pillar lower hinge reinforcing plate assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112249166A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113276955A (en) * | 2021-06-21 | 2021-08-20 | 东风汽车集团股份有限公司 | Automobile B column capable of avoiding failure and fracture under side collision working condition and automobile comprising same |
| CN115092261A (en) * | 2022-07-15 | 2022-09-23 | 岚图汽车科技有限公司 | B-pillar structure for improving safety performance |
-
2020
- 2020-09-14 CN CN202010963166.9A patent/CN112249166A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113276955A (en) * | 2021-06-21 | 2021-08-20 | 东风汽车集团股份有限公司 | Automobile B column capable of avoiding failure and fracture under side collision working condition and automobile comprising same |
| CN115092261A (en) * | 2022-07-15 | 2022-09-23 | 岚图汽车科技有限公司 | B-pillar structure for improving safety performance |
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