CN107512316B - Sectional type automobile B column structure - Google Patents
Sectional type automobile B column structure Download PDFInfo
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- CN107512316B CN107512316B CN201710699357.7A CN201710699357A CN107512316B CN 107512316 B CN107512316 B CN 107512316B CN 201710699357 A CN201710699357 A CN 201710699357A CN 107512316 B CN107512316 B CN 107512316B
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a sectional type automobile B column structure, which comprises a plurality of double-layer column pipes and column pipe joints connected among the double-layer column pipes; the double-layer cylindrical tube includes: an octagonal inner tube; the octagonal outer layer tube is sleeved outside the octagonal inner layer tube and is parallel to the octagon of the inner layer tube; a reinforcing rib provided between adjacent vertexes of the inner tube and the outer tube in the lateral direction of the automobile; a filler filled between the inner layer tube and the outer layer tube; the cylindrical pipe joint includes: a connection plate having an upper surface and a lower surface at an inclined angle; an upper connection part provided on the upper surface for matingly receiving the double-layered cylindrical tube at an upper part; and the lower connecting part is arranged on the lower surface and is used for matching and accommodating the double-layer columnar pipe positioned at the lower part. The segmented automobile B column structure provided by the invention has stronger rigidity and good energy absorption characteristic.
Description
Technical Field
The invention belongs to the technical field of automobile parts and safety, and particularly relates to a sectional type automobile B column structure.
Background
With the popularization of automobiles, the requirements of people on the performance of the automobiles are higher, and the requirements on the safety are more severe while the dynamic performance, the economy and the comfort are improved. The automobile safety performance is improved, and the occurrence of accidents can be effectively avoided or the degree of casualties can be effectively reduced.
The automobile B column is arranged between the front seat and the rear seat of the four-door automobile, is arranged on the threshold beam and supports the metal columnar structure of the roof of the cockpit, has an important protection effect on members in the cockpit when side collision or rolling, and has enough rigidity to resist collision deformation due to smaller distance between the automobile B column and passengers in the side collision process, so that larger living space is provided for the passengers, and meanwhile, better energy absorption property is required, the energy of the side collision is quickly absorbed to avoid serious injury to the passengers due to overlarge acceleration in the collision process, and a better force transmission path is provided, so that the absorbed residual collision energy is quickly transferred to main bearing parts of the automobile body, and the damage to the passengers is reduced.
The existing automobile B column is complex in structure, is generally composed of a high-strength steel stamping forming B column outer plate, a high-strength steel stamping forming B column inner plate and a plurality of reinforcing plates, the B column shape of each automobile type is different, the universality is poor, each sheet metal part is required to be manufactured into a die with high cost, the stamping forming manufacturing process of the high-strength steel is complex, and the processing cost is high. And the B column is difficult to ensure better energy absorption characteristics while meeting high rigidity, and auxiliary protection of the side safety air bags is required.
The bamboo bears a great load by wind load in natural environment, and in order to adapt to the environment, the bottom end of the bamboo bears the maximum tensile and compressive stress without damage, so that the special microscopic and macroscopic tissue structure of the bamboo is formed. Bamboo is a natural long fiber composite material, and can be approximately seen as a composite of a basic tissue composed of parenchyma cells and reinforcing fibers composed of thick-walled cells mainly composed of vascular bundles. The elastic modulus and the tensile strength of the thin-wall basic tissue of the moso bamboo are calculated to be 0.22 GPa and 19.42 MPa respectively by Z.P. Shao et al (2010), and meanwhile, a tensile sample of the bamboo vascular bundle is prepared by a mechanical stripping method, and the tensile elastic modulus and the tensile elastic strength of the bamboo vascular bundle are measured to be 33.9 GPa and 482.2 MPa respectively. The bamboo wall has the function of absorbing energy by basic tissues and the function of bearing and transmitting load by vascular bundles in the loading process. Meanwhile, the bamboo joint connecting plate of the bamboo is a reinforcing rib in the middle of the bamboo tube structure, and experiments show that the bamboo joint connecting plate enables the transverse bearing capacity of the bamboo tube to be improved by three times.
Based on the background technology, the invention designs a high-performance sectional type automobile B column structure imitating a bamboo structure aiming at the defects existing in the existing automobile B column, wherein the design thought is derived from the macroscopic and microscopic structures and functions of the bamboo.
Disclosure of Invention
In order to overcome the defect that the existing automobile B-pillar structure is difficult to have high rigidity and good energy absorption characteristics, the invention provides a sectional type automobile B-pillar structure formed by assembling a plurality of double-layer columnar pipes and joints, which has the advantages of high rigidity, good energy absorption characteristics and better safety.
The technical scheme provided by the invention is as follows:
a segmented automotive B-pillar structure comprising: a plurality of double-layer cylindrical pipes and a cylindrical pipe joint connected between the plurality of double-layer cylindrical pipes;
the double-layer cylindrical tube includes:
an octagonal inner tube;
the octagonal outer layer tube is sleeved outside the octagonal inner layer tube and is parallel to the octagon of the inner layer tube;
a reinforcing rib provided between adjacent vertexes of the inner tube and the outer tube in the lateral direction of the automobile;
a filler filled between the inner layer tube and the outer layer tube;
the cylindrical pipe joint includes:
a connection plate having an upper surface and a lower surface at an inclined angle;
an upper connection part provided at the upper surface and having an octagonal annular receiving space for matingly receiving the double-layered cylindrical tube at an upper portion;
and a lower connection part provided at the lower surface and having an octagonal annular receiving space for matingly receiving the double-layered cylindrical tube at the lower part.
Preferably, the inner layer tube and the outer layer tube are both hollow structures with the cross-sectional external dimensions gradually decreasing from bottom to top.
Preferably, the cross sections of the inner tube and the outer tube are axisymmetric octagons, and the distance between a group of opposite sides of the octagons along the front-rear direction of the automobile is greater than the distance between a group of opposite sides of the octagons along the left-right direction of the automobile.
Preferably, the columnar pipe joint is of an integrated structure.
Preferably, the upper surface and the lower surface of the connection plate have the same shape and area.
Preferably, the filler between the inner tube and the outer tube is foamed aluminum.
Preferably, the sectional type automobile B-pillar structure further comprises an upper joint connected between the double-layer pillar pipe and the automobile door upper beam.
Preferably, the lower part of the upper joint is provided with an octagonal annular accommodating space for matching and accommodating the double-layer cylindrical pipe positioned at the lower part.
Preferably, the sectional type automobile B pillar structure further includes a lower joint connected between the double-layer pillar pipe and the automobile rocker.
Preferably, the upper part of the lower joint is provided with an octagonal annular accommodating space for matching and accommodating the double-layer cylindrical pipe at the upper part.
The beneficial effects of the invention are as follows: the sectional type automobile B column structure provided by the invention is formed by assembling a plurality of double-layer column pipes and joints, has stronger rigidity, good energy absorption characteristic and better safety, and overcomes the defect that the existing automobile B column structure is difficult to have high rigidity and good energy absorption characteristic.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a sectional type automobile B-pillar according to the present invention.
Fig. 2 is a schematic diagram of a double-layer cylindrical tube structure according to the present invention.
Fig. 3 is a schematic structural view of a cylindrical pipe joint according to the present invention.
Fig. 4 is a schematic view of a cylindrical pipe joint according to the present invention in a longitudinal section of an automobile.
Fig. 5 is a schematic view of a cylindrical pipe joint according to the present invention in a transverse cross section of a vehicle.
Fig. 6 is a schematic view of the structure of the upper joint according to the present invention.
Fig. 7 is a schematic view of the structure of the lower joint according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1-7, the present invention provides a segmented automotive B-pillar structure. The segmented automotive B-pillar structure includes a plurality of double-layer pillar tubes 100 including an octagonal inner tube 110; an octagonal outer tube 120 which is sleeved outside the octagonal inner tube 110 and is parallel to the octagon of the inner tube 110; and a filler 130 filled between the inner tube 110 and the outer tube 120. The inner layer tube 110 and the outer layer tube 120 are hollow structures with the cross section gradually reduced from bottom to top, the cross sections of the inner layer tube 110 and the outer layer tube 120 are axisymmetric octagons, the distance between a group of opposite sides of each octagon along the front-rear direction of the automobile is larger than the distance between a group of opposite sides of each octagon along the left-right direction of the automobile, and the structure can enable the space of the passenger compartment of the automobile to be larger under the condition that the whole width of the automobile is certain. The filler 130 is made of foamed aluminum, the foamed aluminum imitates a basic structure with an energy absorption function in a bamboo wall, and the foamed aluminum has the advantages of low density and good energy absorption property, can absorb more collision energy under the condition of small weight gain, greatly improves the energy property of the B-pillar, and improves the safety of automobiles.
The reinforcing ribs 140 imitate a vascular bundle structure in the bamboo wall for bearing load and transmitting force, and can improve the rigidity of the B column of the automobile. The reinforcing ribs 140 are provided between the inner tube 110 and the outer tube 120 to connect the inner tube 110 and the outer tube 120 together. The 4 reinforcing ribs 140 are respectively arranged between adjacent vertexes of the inner layer tube 110 and the outer layer tube 120 along the transverse direction of the automobile, the bending resistance of the double-layer columnar tube can be obviously enhanced in the side collision process of the automobile by the reinforcing ribs 140 distributed in this way, and the parts without the reinforcing ribs can crush and absorb energy smoothly, so that the automobile B column is crushed by itself along the transverse direction of the automobile as a whole, and the intrusion deformation to the passenger cabin is reduced.
A plurality of cylindrical pipe joints 200 connected between the double-layered cylindrical pipes 100. The cylindrical pipe joint 200 is an integral structure including an upper coupling part 210, a lower coupling part 220, and a coupling plate 230 between the upper coupling part 210 and the lower coupling part 220. The connecting plate 230 is of a solid structure, and the connecting plate 230 imitates bamboo joint transverse partition plates and has a certain thickness and is used for increasing the structural rigidity of the B-pillar structure. The connection plate 230 has upper and lower surfaces at a certain inclination angle to form the camber and inclination of the B-pillar of the automobile. Because the automobile B column structure is not a vertical structure, in order to match with the automobile overall structure, the automobile B column structure is inclined at a certain angle backwards along the longitudinal direction of the automobile and is provided with a certain inward camber in the transverse direction of the automobile, and gradually contracts inwards from bottom to top to form an arch approximately. The axis of the double-layered cylindrical pipe 100 is a straight line, so the inclination and camber of the B-pillar structure described above are accomplished by adjusting the cylindrical pipe joint 200.
The upper connection part 210 of the cylindrical pipe joint 200 is composed of an inner plate 211, an outer plate 212 and a connection plate 230, and has an octagonal annular receiving space 240; the lower connection part 220 has the same structure as the upper connection part 210. One end of the double-layered cylindrical tube 100 is inserted into the annular receiving space 240 having an octagonal shape and abuts against the connection plate 230. The lower end surface of the double-layered cylindrical tube 100 inserted into the annular accommodating cavity 240 of the upper connecting portion 210 is equal to the shape and area of the upper surface of the corresponding connecting plate 230, the upper end surface of the double-layered cylindrical tube 100 inserted into the annular accommodating cavity of the lower connecting portion 220 is equal to the shape and area of the lower surface of the corresponding connecting plate 230, and the shapes and areas of the upper surface and the lower surface of the connecting plate 230 are equal, that is, the sizes of the end surfaces of the adjacent two sections of double-layered cylindrical tubes 100 connected with the same cylindrical tube joint 200 are the same, so that the overall structure of the B-pillar is uniformly changed in size.
An upper joint 300 connected between the double-layered pillar pipe 100 and the door upper beam 510. An upper joint lower part 310 having an annular receiving space 330 having an octagonal shape formed by an inner plate 311 and an outer plate 312 for matingly receiving the double-layered cylindrical tube 100 at the lower part; the shape and area of the bottom surface of the annular receiving space 330 are equal to the shape and area of the upper end surface of the double-layered cylindrical tube 100 positioned at the lower part thereof. The upper joint upper part 320 connected with the upper beam 510 of the automobile door is of a solid structure, the shape of the upper joint upper part 320 is matched with the structural shape of the upper beam 510 of the automobile door, and the lower joint upper part 320 is semi-wrapped and attached on the upper beam 520 of the automobile door.
A lower joint 400 connected between the double-layered pillar pipe 100 and the rocker arm 520. A lower joint upper part 410 having an annular accommodation space 430 formed by combining a lower joint inner plate 411 and a lower joint outer plate 412, having an octagonal shape, for matingly accommodating the double-layered cylindrical pipe 100 located at the upper part; the shape and area of the bottom surface of the annular receiving space 430 are identical to those of the lower end surface of the double-layered cylindrical tube 100 located at the upper portion thereof. The lower joint lower part 420 is a solid structure, which is connected to the threshold beam 520.
The shape and thickness of the solid structural portions of the upper joint upper part 320 and the lower joint lower part 420 also play a role in adjusting the inclination and camber of the B-pillar structure. The upper joint 300 and the lower joint 400 are respectively connected with the upper automobile door beam 510 and the automobile threshold beam 520 because the joint structure of the B-pillar structure is similar to the bamboo joint part of bamboo, and the rigidity of the joint is greater than that of the double-layer pillar-shaped pipe structure, so that the side collision safety of an automobile can be improved.
The sectional type automobile B column structure disclosed by the invention is further described by combining a specific implementation process.
In one embodiment, the B-pillar structure is composed of 4 double-layer pillar pipes 100, 3 pillar pipe joints 200, an upper joint 300, and a lower joint 400. The inner tube 110 and the outer tube 120 of the double-layered cylindrical tube 100 are each an octagon tube with a tapered conical tube with a corresponding cross-sectional dimension from the lower to the upper profile, which is formed by high pressure molding, and the inner tube 110 and the outer tube 120 are connected together by laser welding using four reinforcing ribs 140, the four reinforcing ribs 140 being disposed between adjacent vertexes of the inner tube 110 and the outer tube 120 in the transverse direction of the automobile, respectively. Finally, the gap between the inner tube 110 and the outer tube 120 is filled with aluminum foam.
The columnar pipe joint 200, the upper joint 300 and the lower joint 400 are manufactured by adopting a die casting molding method by selecting corresponding dies with different sizes of structural designs according to different B-pillar structures.
Selecting a proper columnar pipe joint 200 and a double-layer columnar pipe 100, and ensuring that the end face size of the double-layer columnar pipe 100 is consistent with the upper surface and the lower surface of a connecting plate 230 of the corresponding columnar pipe joint 200; selecting proper upper joint 300 and lower joint 400 to ensure that the end face size of double-layer columnar pipe 100 is consistent with the bottom face size of the annular accommodating space corresponding to upper joint 300 and lower joint 400, and simultaneously ensuring that upper joint 300 is matched with the shape of the corresponding automobile door upper beam 510; sequentially positioning, assembling, clamping and connecting by adopting laser welding from bottom to top.
After the whole welding of the B column is finished, the side wall of the white car body is transferred for positioning and mounting, and the welding of the B column structure, the car door sill beam 520 and the car door upper beam 510 is carried out by adopting laser welding, so that the mounting of the B column structure is finished.
The sectional type automobile B column structure provided by the invention is formed by assembling a plurality of double-layer column pipes and joints, has stronger rigidity, good energy absorption characteristic and better safety, and overcomes the defect that the existing automobile B column structure is difficult to have high rigidity and good energy absorption characteristic.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. A segmented automotive B-pillar structure comprising: a plurality of double-layer cylindrical pipes and a cylindrical pipe joint connected between the plurality of double-layer cylindrical pipes;
the double-layer cylindrical tube includes:
an octagonal inner tube;
the octagonal outer layer tube is sleeved outside the octagonal inner layer tube and is parallel to the octagon of the inner layer tube;
a reinforcing rib provided between adjacent vertexes of the inner tube and the outer tube in the lateral direction of the automobile;
a filler filled between the inner layer tube and the outer layer tube;
the cylindrical pipe joint includes:
a connection plate having an upper surface and a lower surface at an inclined angle;
an upper connection part provided at the upper surface and having an octagonal annular receiving space for matingly receiving the double-layered cylindrical tube at an upper portion;
a lower connection part provided at the lower surface and having an octagonal annular receiving space for matingly receiving the double-layered cylindrical tube at the lower part;
the cross sections of the inner layer pipe and the outer layer pipe are axisymmetric octagons, and the distance between a group of opposite sides of each octagon along the front-rear direction of the automobile is larger than that between a group of opposite sides of each octagon along the left-right direction of the automobile;
the columnar pipe joint is of an integrated structure.
2. The segmented automobile B-pillar structure of claim 1, wherein said inner tube and said outer tube are hollow structures having progressively decreasing cross-sectional dimensions from bottom to top.
3. The segmented automobile B-pillar structure of claim 1, wherein the upper and lower surfaces of the web are identical in shape and area.
4. The segmented automobile B-pillar structure of claim 1, wherein the filler between the inner tube and the outer tube is aluminum foam.
5. The segmented automobile B-pillar structure of claim 1, further comprising an upper joint connected between the double-layer pillar tube and an automobile door upper beam.
6. The segmented automobile B-pillar structure of claim 5, wherein the lower portion of the upper joint has an octagonal annular receiving space for matingly receiving the double-layered pillar tube at the lower portion.
7. The segmented automobile B-pillar structure of claim 1, further comprising a lower joint connected between the double-layer pillar tube and an automobile rocker.
8. The segmented automobile B-pillar structure of claim 7, wherein an upper portion of said lower joint has an octagonal annular receiving space for matingly receiving said double-layered pillar tube at the upper portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699357.7A CN107512316B (en) | 2017-08-16 | 2017-08-16 | Sectional type automobile B column structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710699357.7A CN107512316B (en) | 2017-08-16 | 2017-08-16 | Sectional type automobile B column structure |
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| Publication Number | Publication Date |
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| CN107512316A CN107512316A (en) | 2017-12-26 |
| CN107512316B true CN107512316B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710699357.7A Active CN107512316B (en) | 2017-08-16 | 2017-08-16 | Sectional type automobile B column structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7139826B2 (en) * | 2018-09-21 | 2022-09-21 | トヨタ自動車株式会社 | Front pillar and manufacturing method thereof |
| CN111619679A (en) * | 2020-05-29 | 2020-09-04 | 奇瑞汽车股份有限公司 | Vehicle threshold structure and vehicle |
| CN112793670B (en) * | 2021-01-21 | 2023-01-10 | 宁波吉利汽车研究开发有限公司 | Reinforced pipe and manufacturing method thereof |
| CN116495023B (en) * | 2023-04-14 | 2024-03-08 | 西南交通大学 | Foam metal filled bamboo-like sandwich circular tube and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19603098A1 (en) * | 1996-01-29 | 1997-07-31 | Daimler Benz Ag | Passenger cell with stiffened B columns for convertible or open car |
| CN103287369A (en) * | 2013-06-20 | 2013-09-11 | 湖南大学 | Multistage embedded type octagonal automobile energy absorbing and buffering device |
| CN205801255U (en) * | 2016-07-25 | 2016-12-14 | 江苏祺胜现代新材料有限公司 | A kind of anti-collision automobile side wall structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8920900B2 (en) * | 2012-08-17 | 2014-12-30 | Toyota Jidosha Engineering & Manufacturing North America, Inc. | Heat activated expansion foam with lip seal |
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2017
- 2017-08-16 CN CN201710699357.7A patent/CN107512316B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19603098A1 (en) * | 1996-01-29 | 1997-07-31 | Daimler Benz Ag | Passenger cell with stiffened B columns for convertible or open car |
| CN103287369A (en) * | 2013-06-20 | 2013-09-11 | 湖南大学 | Multistage embedded type octagonal automobile energy absorbing and buffering device |
| CN205801255U (en) * | 2016-07-25 | 2016-12-14 | 江苏祺胜现代新材料有限公司 | A kind of anti-collision automobile side wall structure |
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| CN107512316A (en) | 2017-12-26 |
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