CN115092261A - B-pillar structure for improving safety performance - Google Patents
B-pillar structure for improving safety performance Download PDFInfo
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- CN115092261A CN115092261A CN202210837677.5A CN202210837677A CN115092261A CN 115092261 A CN115092261 A CN 115092261A CN 202210837677 A CN202210837677 A CN 202210837677A CN 115092261 A CN115092261 A CN 115092261A
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 142
- 238000003466 welding Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 49
- 230000002787 reinforcement Effects 0.000 claims description 17
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- 230000001070 adhesive effect Effects 0.000 claims description 3
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- 230000008569 process Effects 0.000 description 8
- 230000003139 buffering effect Effects 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000712 Boron steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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 application relates to a B post structure for promoting security performance relates to automobile manufacturing technical field. This B post structure includes B post main part and reinforcing structure, B post main part is including B post reinforcing plate and the B post inner panel that can enclose into first closed cushion chamber, the reinforcing structure is including B post backup pad and the B post support shrouding that can enclose into the closed cushion chamber of second, the outside and the welding seam quantity of B post backup pad are no longer than 1 way with B post reinforcing plate welding, all there is first clearance between the outside surplus region of B post backup pad and the B post reinforcing plate, the outside and the B post inner panel of B post support shrouding are at least partly continuous. The application provides a B post structure has promoted Y to rigidity, and the further supplementary collision energy that absorbs in first clearance, B post support shrouding and the continuous structure setting of B post inner panel have saved adding of safety belt reinforcing plate isotructure and have established, have increased overall structure intensity under the prerequisite that the space of collapsing is unchangeable, simplify structure and technology, have promoted the side impact and the roof pressure performance of B post structure.
Description
Technical Field
The application relates to the technical field of automobile manufacturing, in particular to a B column structure for improving safety performance.
Background
At present, safety performance is an important index of white body performance, particularly side collision performance and top pressure performance, and a side body side B column structure plays a vital role in absorbing and transmitting energy in side collision due to a small buffer area of the side body structure. In the collision accident between vehicles, the incidence rate of side collision is 19%, which exceeds the incidence rate of front collision, and is only second to the incidence rate of rear-end collision, and according to a recent investigation on collision accidents, the mortality rate of side collision is up to 44% in all types of death accidents, because when a vehicle is collided in front or back, an engine compartment and a trunk both provide a large buffering and energy-absorbing space for a passenger compartment, and because the variable space of the side surface of the vehicle body is small, the injury degree to the door passengers after the collision is often more serious than the rear-end collision.
The B-column assembly is a bearing beam between the front row and the rear row of the automobile cabin, an upper connecting top cover and a lower connecting floor, a wiring harness penetrates through the B-column assembly, a safety belt fixing buckle is arranged, and even an air bag can be arranged, and the B-column assembly is an important factor influencing the safety performance of an automobile body. In order to ensure safety, some manufacturers thicken materials, design the materials into high-rigidity components, so that the B column reinforcing plate deforms less when the B column reinforcing plate is subjected to side collision, the top of the B column reinforcing plate falls off from the automobile top cover, and passengers are injured. And the pressure resistance of the roof is also an important consideration factor of automobile safety, and according to investigation, the fatality rate or injury rate of members in the automobile is increased by more than 50% in the vehicle with the pressure-weight ratio of 1.5 on the roof in a rollover accident compared with the vehicle with the pressure-weight ratio of 4, so that the B column is particularly important as the most important force transmission path for bearing the jacking working condition.
In the related art, in order to improve the existing problems, the depth of an outer cavity at the upper part of a B-pillar is usually made to be deep, and the depth dimension is about 30-50 mm, so as to ensure the overall strength of a B-pillar structure, but the outer panel cavity of the B-pillar of some vehicle types provided with frameless doors is very thin, and the depth dimension of the B-pillar structure can only be 10-15 mm, so that the structure in the related art has a great defect, which directly causes that the intrusion amount of a vehicle is great when a side collision occurs, and simultaneously, in the top pressure test process, the upper part of the B-pillar is bent and deformed too early due to the poor overall strength and rigidity of the B-pillar, so as to cause great damage to passengers in the vehicle.
Disclosure of Invention
The embodiment of the application provides a B post structure for promoting the security performance to solve the problem that when the B post structure among the correlation technique is applied to the vehicle without the frame door, the overall structure intensity is poor and the passenger in the vehicle may be damaged greatly.
The application provides a B post structure for promoting security performance, it includes:
the B column main body comprises a B column reinforcing plate and a B column inner plate, and a first closed buffer cavity is enclosed by the B column reinforcing plate and the B column inner plate;
the reinforcing structure is positioned in the first closed buffer cavity and comprises a B-column supporting plate and a B-column supporting sealing plate, and the B-column supporting plate and the B-column supporting sealing plate enclose a second closed buffer cavity; wherein,
the outer side of the B-column supporting plate is welded with the B-column reinforcing plate, the number of welding seams is not more than 1, first gaps are formed between the remaining area of the outer side of the B-column supporting plate and the B-column reinforcing plate, and the outer side of the B-column supporting sealing plate is at least partially connected with the B-column inner plate.
In some embodiments, the two ends of the B-pillar reinforcing plate, which are close to the seam allowance connected with the B-pillar inner plate, are provided with convex ribs;
and a first reinforcing rib is arranged on the B column reinforcing plate and positioned between the convex ribs and welded with the outer side of the B column supporting plate.
In some embodiments, the outer side of the B-pillar support plate is welded to the first reinforcing rib, the outer side of the B-pillar support plate is further provided with at least two second reinforcing ribs, the second reinforcing ribs are respectively located at two sides of the connection, the first gap exists between the second reinforcing rib and the B-pillar reinforcing plate, and the average value of the first gap is not less than 3 mm.
In some embodiments, the B-pillar support plate and the B-pillar support sealing plate are both U-shaped, the open end of the B-pillar support plate is disposed towards the vehicle interior, the open end of the B-pillar support sealing plate is disposed towards the vehicle exterior, and the ratio of the depth of the B-pillar support plate to the depth of the B-pillar support sealing plate is in a range of 2.5-3.5;
the B-column supporting plate and the B-column supporting sealing plate are respectively provided with flanges extending outwards along the edges, and the inner surfaces of the flanges of the B-column supporting plate are connected with the inner surfaces of the flanges of the B-column supporting sealing plate.
In some embodiments, the B-pillar support plate and the B-pillar support sealing plate are both U-shaped, the open end of the B-pillar support plate is disposed towards the inside of the vehicle, the open end of the B-pillar support sealing plate is disposed towards the outside of the vehicle, and the ratio of the depth of the B-pillar support plate to the depth of the B-pillar support sealing plate ranges from 2.5 to 3.5;
the B-column supporting plate and the B-column supporting sealing plate are provided with flanges extending inwards along the edges, and the outer surfaces of the flanges of the B-column supporting plate are connected with the outer surfaces of the flanges of the B-column supporting sealing plate.
In some embodiments, a third reinforcing rib is arranged on the B-pillar support sealing plate, the third reinforcing rib is attached to the B-pillar inner plate, and a plurality of connecting pieces are arranged at the attachment position at intervals along the height direction;
and second gaps are formed between the outer side residual area of the B-column support sealing plate and the B-column inner plate, and the average value of the second gaps is not less than 3 mm.
In some embodiments, the joint of the B-pillar support plate and the first reinforcing rib, and the joint of the third reinforcing rib and the B-pillar inner plate are filled with structural adhesive.
In some embodiments, the lower end of the B-pillar reinforcing plate is provided with a first guide deformation rib;
the rear door lower hinge reinforcing plate is provided with a second guide deformation rib, the position of the second guide deformation rib corresponds to that of the first guide deformation rib, a plurality of bosses are arranged on the rear door lower hinge reinforcing plate at intervals and face the direction outside the vehicle, each boss is connected with the B column reinforcing plate, and a buffer gap is formed between the rear door lower hinge reinforcing plate and the B column reinforcing plate.
In some embodiments, the bottom end of the B-pillar support plate is located below the top end of the rear door lower hinge reinforcement plate, and the overlapping height of the B-pillar support plate and the rear door lower hinge reinforcement plate in the height direction is not less than 80 mm.
In some embodiments, the B-pillar structure includes a roof side rail, the top of the B-pillar inner panel extends upward to form a lap joint, the lap joint is located on the outer side of the roof side rail, and the top of the B-pillar inner panel and the lap joint are connected to the roof side rail.
The technical scheme who provides this application brings beneficial effect includes:
the embodiment of the application provides a B post structure for promoting security performance, the B post reinforcing plate and the B post inner panel of B post main part enclose into first closed cushion chamber, the reinforcing structure is located first closed cushion chamber and includes B post backup pad and B post support shrouding, B post backup pad and B post support shrouding enclose into second closed cushion chamber, because the outside and the B post reinforcing plate welding of B post backup pad and welding seam quantity do not exceed 1 way, all there is first clearance between the outside surplus region of B post backup pad and the B post reinforcing plate, and the outside and the B post inner panel of B post support shrouding are at least partly continuous, therefore, this B post structure has optimized the sectional shape in first half region of B post structure through first closed cushion chamber and second closed cushion chamber, Y to rigidity has been promoted, double-closed cavity, can realize absorbing more collision energy outside, first clearance can further supplementary first closed cushion chamber and second closed cushion chamber absorb and bump better The collision energy, the structure setting that B post supports the shrouding and links to each other with B post inner panel in addition has saved adding of safety belt reinforcing plate isotructure and has established, has increased overall structure intensity under the prerequisite that the space of collapsing is unchangeable, simplify structure and technology, has promoted the holistic side impact of B post structure and roof pressure performance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a B-pillar body of a B-pillar structure for improving safety provided in an embodiment of the present application;
fig. 2 is an exploded view of a B-pillar structure for improving safety performance according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a B-pillar structure provided in an embodiment of the present application, in which a rear door lower hinge reinforcing plate of the B-pillar structure is mounted on a B-pillar reinforcing plate;
fig. 4 is a schematic view of an installation structure of a B-pillar support plate and a B-pillar support closing plate of a B-pillar structure for improving safety performance according to an embodiment of the present application.
In the figure: 1-B column main body, 10-B column reinforcing plate, 100-convex rib, 101-first reinforcing rib, 11-B column inner plate, 12-first closed buffer cavity, 2-reinforcing structure, 20-B column supporting plate, 200-second reinforcing rib, 21-B column supporting sealing plate, 210-third reinforcing rib, 211-connecting piece, 22-second closed buffer cavity, 23-first gap, 24-second gap, 3-rear door lower hinge reinforcing plate, 30-second guide deformation rib, 31-boss, 4-upper side beam, 5-side wall outer plate and 6-integral door ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but 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.
The embodiment of the application provides a B post structure for promoting security performance, and the B post structure can solve the problem that when the B post structure in the related art is applied to a vehicle with a frameless door, the overall structure strength is poor and great damage is possibly caused to passengers in the vehicle.
Referring to fig. 1 and 2, the B-pillar structure mainly includes a B-pillar main body 1 and a reinforcing structure 2, the B-pillar main body 1 includes a B-pillar reinforcing plate 10 and a B-pillar inner plate 11, the B-pillar reinforcing plate 10 and the B-pillar inner plate 11 enclose a first closed buffer cavity 12, the reinforcing structure 2 is located in the first closed buffer cavity 12 and includes a B-pillar supporting plate 20 and a B-pillar supporting sealing plate 21, and the B-pillar supporting plate 20 and the B-pillar supporting sealing plate 21 enclose a second closed buffer cavity 22; the outer side of the B-column support plate 20 is welded with the B-column reinforcing plate 10, the number of welding seams is not more than 1, first gaps 23 are formed between the remaining outer side area of the B-column support plate 20 and the B-column reinforcing plate 10, and the outer side of the B-column support sealing plate 21 is at least partially connected with the B-column inner plate 11.
Specifically, as shown in fig. 1, the B-pillar structure sequentially includes, from outside to inside, a side wall outer panel 5, a B-pillar reinforcing panel 10, a B-pillar support panel 20, a B-pillar support sealing panel 21, and a B-pillar inner panel 11, wherein the a-pillar lower reinforcing panel, the a-pillar upper side beam outer panel, the B-pillar reinforcing panel upper section, the B-pillar reinforcing panel lower section, the doorsill outer panel and other components form a laser tailor-welded integral door ring 6 by laser welding and reheat stamping, and the B-pillar reinforcing panel upper section and the B-pillar reinforcing panel lower section are the B-pillar reinforcing panel 10. Generally, the conventional multi-piece type stamping and welding side wall reinforcing ring needs to be connected with different parts in a spot welding mode, but the mode has the problems of discontinuous structure at the connecting part and stress concentration and local deformation easily occurring in the collision process, and the integral door ring 6 has high structural integrity, so that the structural deformation of a vehicle body in the vehicle side collision process can be reduced, and the safety performance of a vehicle collision structure is improved; through laser tailor-welding and patch plate thickness optimization, the material utilization rate can be improved, a good light weight effect can be realized, the processes of a die, a clamp and welding equipment can be reduced, the precision of a vehicle body is improved, and the cost of the die and a welding tool and the process cost are reduced.
A B-column reinforcing plate 10 and a B-column inner plate 11 in the B-column structure enclose a first closed buffer cavity 12, a B-column supporting plate 20 and a B-column supporting sealing plate 21 enclose a second closed buffer cavity 22, because the outer side of the B-column supporting plate 20 is welded with the B-column reinforcing plate 10, the number of welding seams is not more than 1, a first gap 23 exists between the outer side residual area of the B-column supporting plate 20 and the B-column reinforcing plate 10, and the outer side of the B-column supporting sealing plate 21 is at least partially connected with the B-column inner plate 11. Therefore, the sectional shape of the upper half area of the B-pillar structure is optimized through the combined structure of the first closed buffer cavity 12 and the second closed buffer cavity 22, the Y-direction rigidity is improved, more collision energy can be absorbed through the double-closed cavity, and the first gap 23 can further assist the first closed buffer cavity 12 and the second closed buffer cavity 22 to better absorb the collision energy, so that the collision resistance and the safety of the B-pillar structure are greatly improved; in addition, the structure setting that B post supports shrouding 21 and B post inner panel 11 and links to each other has enlarged the cavity size of second closed cushion chamber 22, under the unchangeable prerequisite in the ulcerate space of contracting, the common crashproof performance of first closed cushion chamber 12 and second closed cushion chamber 22 has generally been promoted, and the B post supports shrouding 21 and has still saved adding of structures such as safety belt reinforcing plate after B post inner panel 11 links to each other and establish, it is unchangeable in the space of contracting, the overall structure intensity has been increased under the prerequisite of simplified structure and technology, the holistic side impact and the roof pressure performance of B post structure have been promoted.
Furthermore, both ends of the B-pillar reinforcing plate 10 close to the seam allowance connected with the B-pillar inner plate 11 are provided with convex ribs 100, the B-pillar reinforcing plate 10 is provided with first reinforcing ribs 101, and the first reinforcing ribs 101 are located between the convex ribs 100 and welded with the outer side of the B-pillar supporting plate 20.
Specifically, due to the limitation of a vehicle door, a side wall seam allowance moves outwards, the size of an upper section area of a B-pillar reinforcing plate is very small in the width direction of a vehicle, namely the Y direction upwards, so that the rigidity in the Y direction is very poor, in order to improve the rigidity in the Y direction of the upper section area of the B-pillar reinforcing plate, convex ribs 100 are arranged at two ends, close to the seam allowance connected with a B-pillar inner plate 11, of a B-pillar reinforcing plate 10, the convex ribs 100 protrude towards the vehicle inner direction, the protruding depth range is 5-8 mm, the concave ribs 100 extend to the position below the vehicle waist line in the height direction of the vehicle, namely the Z direction, and the length range is 450-500 mm; in order to reduce the assembly interference due to manufacturing tolerances, the clearance between the recessed rib 100 and the B-pillar inner panel 11 is ensured to be more than 3 mm.
Specifically, a first rib 101 is disposed in the middle region of the B-pillar reinforcement plate 10, and the first rib 101 also extends to below the waist line and is also convex toward the interior of the vehicle. Through the combined arrangement of the convex ribs 100 and the first reinforcing ribs 101, the cross section of the upper section area of the B-pillar reinforcing plate 10 is similar to a wave shape, and the rigidity in the Y direction is obviously improved; arrange in first strengthening rib 101 with the row of solder joint of B post backup pad 20, increase the structural adhesive between the binding face between the two and connect, can guarantee joint strength, reducible solder joint quantity again, reduce cost. In addition, the material of the upper section area of the B-pillar reinforcing plate 10 is selected from Usibor1500 with high strength, the material thickness is 1.6-2 mm, and the Usibor1500 is a typical quenching hardened ultrahigh-strength boron steel plate.
Further, the outside of B post backup pad 20 and first strengthening rib 101 welding, the outside of B post backup pad 20 still is equipped with two piece at least second strengthening ribs 200, and second strengthening rib 200 is located the both sides of this junction respectively, and has first clearance 23 between second strengthening rib 200 and the B post reinforcing plate 10, and the average value of first clearance 23 is not less than 3 mm.
Specifically, from the perspective of structural design, the number of the second reinforcing ribs 200 is two, and the second reinforcing ribs are symmetrically arranged along the joint of the B-pillar support plate 20 and the first reinforcing rib 101, and protrude toward the outside of the vehicle. Here, the second reinforcing rib 200 is not attached to the B-pillar reinforcing plate 10, a first gap 23 exists between the two, the average value of the first gap 23 is not less than 3mm, the existence of the first gap not only increases the cross-sectional area, improves the rigidity, but also avoids welding points required by attachment, and reduces the manufacturing cost. Most importantly, the arrangement of the first gaps 23 also provides a buffering space to some extent, and although the total buffering gap is not changed, the reinforcing structure of the second reinforcing beads 200 combined with the first gaps 23 can absorb more collision energy while improving the overall structural rigidity.
Further, a third reinforcing rib 210 is arranged on the B-pillar support sealing plate 21, the third reinforcing rib 210 is attached to the B-pillar inner plate 11, and a plurality of connecting pieces 211 arranged at intervals along the height direction are arranged at the attachment position; second gaps 24 exist between the outer side residual area of the B-pillar support sealing plate 21 and the B-pillar inner plate 11, and the average value of the second gaps 24 is not less than 3 mm.
Specifically, the third reinforcing rib 210 protrudes toward the vehicle interior, the third reinforcing rib 210 is attached to the B-pillar inner panel 11, and a corresponding structure protruding toward the vehicle exterior is disposed in an area corresponding to the third reinforcing rib 210 on the B-pillar inner panel 11, so that after the third reinforcing rib 210 is connected to the B-pillar inner panel 11, the strength of the connection area is locally enhanced, and the connection part is prevented from being broken or torn at first during collision. In order to improve the deformation resistance of the B-pillar support sealing plate 21 and solve the problem of difficult matching of a large assembly, a second gap 24 exists between the B-pillar support sealing plate 21 and the B-pillar inner plate 11, the average value of the second gap 24 is not less than 3mm, the third reinforcing rib 210 is connected with the B-pillar inner plate 11 through a connecting piece 211, structural glue is filled in the gap at the joint of the third reinforcing rib 210 and the B-pillar inner plate 11, the connecting piece 211 is preferably a connecting bolt, and the connecting bolts are arranged at intervals along the Z direction.
Furthermore, the B-column support plate 20 and the B-column support sealing plate 21 are both in a U-shaped structure, the open end of the B-column support plate 20 is arranged towards the vehicle interior direction, the open end of the B-column support sealing plate 21 is arranged towards the vehicle exterior direction, and the ratio of the depth of the B-column support plate 20 to the depth of the B-column support sealing plate 21 is 2.5-3.5; the B-pillar support plate 20 and the B-pillar support sealing plate 21 are provided with flanges extending outwards along the edges, and the inner surfaces of the flanges of the B-pillar support plate 20 are connected with the inner surfaces of the flanges of the B-pillar support sealing plate 21.
Specifically, the B-pillar support plate 20 extends in the vehicle interior direction as much as possible, and the edges of the flanges of the B-pillar support plate 20 and the B-pillar support seal plate 21 are spaced from the B-pillar inner plate by a gap of more than 113mm, so as to reduce the requirement on the installation accuracy. The width value range of the flanging extending from the B column support plate 20 is 6-8 mm, and the flanging of the B column support plate 20 and the flanging of the B column support sealing plate 21 can be connected through laser welding. In addition, the material of the B column support plate 20 is preferably usibor1500, and the material thickness is 1.2-1.6 mm; the material of the B-pillar support closing plate 21 is preferably HC340/590DP, and the material thickness is preferably 1.0mm, wherein HC340/590DP is steel produced by Bao steel.
Furthermore, the B-column support plate 20 and the B-column support sealing plate 21 are both in a U-shaped structure, the open end of the B-column support plate 20 is arranged towards the vehicle interior direction, the open end of the B-column support sealing plate 21 is arranged towards the vehicle exterior direction, and the ratio of the depth of the B-column support plate 20 to the depth of the B-column support sealing plate 21 is 2.5-3.5; the B-pillar support plate 20 and the B-pillar support sealing plate 21 are both provided with inward extending flanges along the edges, and the outer surfaces of the flanges of the B-pillar support plate 20 are connected with the outer surfaces of the flanges of the B-pillar support sealing plate 21.
Specifically, compare in preceding B post backup pad 20 and B post support shrouding 21's structure and connected mode, foretell difference lies in B post backup pad 20 and B post support shrouding 21 both turn over the turn-ups turn over the direction not the same between them, when turning over inwards, turn over the turn-ups connected mode between them for adopting the structure to glue the bonding and support the connected mode of holding each other, compare the structure of turning over outwards simultaneously, can further strengthen B post backup pad 20 and B post support shrouding 21 both holistic structural strength when turning over inwards, be difficult to more warp when taking place the striking, the ability of anti striking can be stronger.
Further, as shown in fig. 3, a first guiding deformation rib is disposed at a lower end of the B-pillar reinforcing plate 10, a rear door lower hinge reinforcing plate 3 is disposed on the B-pillar reinforcing plate 10, a second guiding deformation rib 30 corresponding to the first guiding deformation rib is disposed on the rear door lower hinge reinforcing plate 3, a plurality of spaced bosses 31 are further disposed on the rear door lower hinge reinforcing plate 3 and are arranged toward the outside of the vehicle, each boss 31 is connected to the B-pillar reinforcing plate 10, and a buffering gap is formed between the rear door lower hinge reinforcing plate 3 and the B-pillar reinforcing plate 10.
Specifically, the lower section area of the B-pillar reinforcement plate 10 is set as a soft area, and needs to be deformed properly to absorb energy during collision, so as to ensure a living space at the upper part of the B-pillar, and therefore, the lower end of the B-pillar reinforcement plate 10 is provided with a first guiding deformation rib. First guide warp muscle height 30mm, about 8mm deeply, first guide warp the muscle and is used for guiding the second section of B post reinforcing plate 10 to take place to warp here when the side is bumped, because still be equipped with hinge reinforcing plate 3 under the back door on the B post reinforcing plate 10, consequently be equipped with the second guide that the position and first guide warp the muscle and correspond on the hinge reinforcing plate 3 under the back door and warp muscle 30, warp the muscle with first guide and take place deformation jointly. Meanwhile, the lower section of the B-pillar reinforcement plate 10 is preferably made of a thermoformed material dubibor 1000 which has a slightly lower strength but a higher elongation and a higher bending angle, has a material thickness of 1.2-1.6 mm, and is connected with the upper section of the B-pillar reinforcement plate 10 through laser welding.
Specifically, the rear door lower hinge reinforcing plate 3 is welded on the inner side of the lower section area of the B-pillar reinforcing plate, the rear door lower hinge reinforcing plate 3 not only can provide a mounting point for a hinge, but also plays a role in locally reinforcing the lower section of the B-pillar reinforcing plate 10, and prevents the lower section of the B-pillar reinforcing plate 10 from being broken due to too large deformation during side collision. The rear door lower hinge reinforcing plate 3 is provided with a boss 31 for welding, and the boss 31 is formed in order to prevent the other region where the boss 31 is not provided from being attached to the lower section of the B-pillar reinforcing plate 10, so that a buffer gap is formed between the rear door lower hinge reinforcing plate 3 and the B-pillar reinforcing plate 10, and the buffer gap is about 5 mm. The setting in buffering clearance makes can have stronger extending ability when the collision, prevents to break off, and in addition, the preferred DC01 that is the percentage elongation higher that is of the material of hinge reinforcing plate 3 under the back door, and the material thickness is 0.9 ~ 1.1mm, and wherein, DC01 is a cold-rolled steel sheet.
Further, as shown in fig. 4, the bottom end of the B pillar support plate 20 is located below the top end of the rear door lower hinge reinforcing plate 3, and the overlapping height of the B pillar support plate 20 and the rear door lower hinge reinforcing plate 3 in the height direction is not less than 80 mm.
Specifically, because hinge reinforcing plate 3 is installed on B post reinforcing plate 10 under the back door, be equipped with the mounting hole of hinge reinforcing plate 3 under the fixed back door on the B post reinforcing plate 10, and B post backup pad 20 is then along Z to extending to about 80mm department in the below of hinge reinforcing plate 3 mounting hole under the back door, the Y of B post reinforcing plate 10 here is to the degree of depth darker, both sides facade respectively sets up two solder joints with B post reinforcing plate 10, still can promote the mounting point rigidity of hinge on the back door when promoting B post reinforcing plate 10 intensity, promote the flagging performance of back door. The Z-position of the B-pillar support closing plate 21 ends at the upper part of the mounting hole of the hinge on the back door, because the depth of the B-pillar reinforcement plate 10 at the position of the hinge on the back door along the Y-direction is very deep, the strength is enough, excessive reinforcement is not needed, and the downward extension can affect the mounting of the hinge on the back door.
Further, the B post structure includes roof side rail 4, and the top of B post inner panel 11 extends towards the top and forms overlap joint portion, and overlap joint portion is located the outside of roof side rail 4, and the top and the overlap joint portion of B post inner panel 11 all link to each other with roof side rail 4.
Specifically, the B-pillar inner plate 11 is of an integral structure, and in order to make up for the defect that the dimension of the upper section of the B-pillar reinforcement plate is slightly smaller, the dimension of the upper section of the B-pillar inner plate 11 in the Y direction is increased as much as possible under the premise that the arrangement and stamping feasibility of the height adjuster are met, so that a sufficient space is provided for the second closed buffer cavity 22 formed by the B-pillar support plate 20 and the B-pillar support seal plate 21. In addition, the joint between the B-pillar inner panel 11 and the roof side rail 4 is particularly important, and force can be transmitted to the roof through this joint during side impact and also transmitted to the B-pillar structure through the roof side rail 4 during roof pressure. The common connection structure of traditional motorcycle type here is that B post inner panel 11 overlap joint 4 roof beam's inboard, and the overlap joint volume is shorter, beats one row or two rows of solder joints, when receiving big barrier side impact, and here solder joint often can appear tearing, influences structural integrity. And in this B post structure, the top of B post inner panel 11 extends towards the top and forms overlap joint portion, and overlap joint portion is located the outside of roof beam 4, when B post inner panel 11 is located the inboard of roof beam 4, the solder joint that both connect during side impact receives is the tensile force almost, and the solder joint tears very easily when receiving the tensile force, when changing B post inner panel 11 into welding roof beam 4 outside, the solder joint nearly received when the striking is the extrusion force this moment, difficult emergence is torn, the rigidity of joint department has been promoted, can transmit the top cap with power more effectively when side impact, and solved the tearing problem of solder joint from the angle of solder joint atress characteristic, the integrality of automobile body structure after the collision has been guaranteed.
In addition, the lap joint length between overlap joint portion and roof side rail 4 is 100 ~ 120mm to suitably increase solder joint quantity, guarantee that the solder joint can not tear after the collision, keep the structural integrity of automobile body. The preferable material of roof side rail 4 is usibor1500, and the material thickness is 1.5 ~ 1.7 mm.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description is only an example of the present application, and is provided to enable any person skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A B-pillar structure for enhancing safety performance, comprising:
the B-pillar main body (1) comprises a B-pillar reinforcing plate (10) and a B-pillar inner plate (11), and the B-pillar reinforcing plate (10) and the B-pillar inner plate (11) enclose a first closed buffer cavity (12);
the reinforcing structure (2) is positioned in the first closed buffer cavity (12) and comprises a B-pillar supporting plate (20) and a B-pillar supporting closing plate (21), and the B-pillar supporting plate (20) and the B-pillar supporting closing plate (21) enclose a second closed buffer cavity (22); wherein,
the outer side of the B-column support plate (20) is welded with the B-column reinforcing plate (10), the number of welding seams is not more than 1, a first gap (23) exists between the remaining area of the outer side of the B-column support plate (20) and the B-column reinforcing plate (10), and the outer side of the B-column support closing plate (21) is at least partially connected with the B-column inner plate (11).
2. A B-pillar structure for enhancing safety as claimed in claim 1, wherein:
both ends of the B-pillar reinforcing plate (10), which are close to a seam allowance connected with the B-pillar inner plate (11), are provided with convex ribs (100);
and a first reinforcing rib (101) is arranged on the B-column reinforcing plate (10), and the first reinforcing rib (101) is positioned between the convex ribs (100) and welded with the outer side of the B-column supporting plate (20).
3. A B-pillar structure for enhancing safety as claimed in claim 2, wherein: the outer side of the B-column supporting plate (20) is welded with the first reinforcing rib (101), at least two second reinforcing ribs (200) are further arranged on the outer side of the B-column supporting plate (20), the second reinforcing ribs (200) are respectively located on two sides of the joint, a first gap (23) exists between each second reinforcing rib (200) and the B-column reinforcing plate (10), and the average value of the first gap (23) is not less than 3 mm.
4. A B-pillar structure for enhancing safety as claimed in claim 1, wherein:
the B-column support plate (20) and the B-column support sealing plate (21) are both of U-shaped structures, the open end of the B-column support plate (20) is arranged towards the vehicle interior direction, the open end of the B-column support sealing plate (21) is arranged towards the vehicle exterior direction, and the ratio of the depth of the B-column support plate (20) to the depth of the B-column support sealing plate (21) is 2.5-3.5;
the B-column supporting plate (20) and the B-column supporting sealing plate (21) are provided with flanges extending outwards along the edges, and the inner surfaces of the flanges of the B-column supporting plate (20) are connected with the inner surfaces of the flanges of the B-column supporting sealing plate (21).
5. A B-pillar structure for enhancing safety as claimed in claim 1, wherein:
the B-column support plate (20) and the B-column support sealing plate (21) are both of U-shaped structures, the open end of the B-column support plate (20) is arranged towards the vehicle interior direction, the open end of the B-column support sealing plate (21) is arranged towards the vehicle exterior direction, and the ratio of the depth of the B-column support plate (20) to the depth of the B-column support sealing plate (21) is 2.5-3.5;
the B-pillar support plate (20) and the B-pillar support sealing plate (21) are both provided with inward extending flanges along the edges, and the outer surfaces of the flanges of the B-pillar support plate (20) are connected with the outer surfaces of the flanges of the B-pillar support sealing plate (21).
6. A B-pillar structure for enhancing safety as claimed in claim 3, wherein:
a third reinforcing rib (210) is arranged on the B-column support sealing plate (21), the third reinforcing rib (210) is attached to the B-column inner plate (11), and a plurality of connecting pieces (211) arranged at intervals in the height direction are arranged at the attachment position;
second gaps (24) exist between the outer side residual area of the B-column supporting sealing plate (21) and the B-column inner plate (11), and the average value of the second gaps (24) is not less than 3 mm.
7. A B-pillar structure for enhancing safety as claimed in claim 6, wherein: the joint of the B-column supporting plate (20) and the first reinforcing rib (101) and the joint of the third reinforcing rib (210) and the B-column inner plate (11) are filled with structural adhesive.
8. A B-pillar structure for enhancing safety as claimed in claim 1, wherein:
the lower end of the B-column reinforcing plate (10) is provided with a first guide deformation rib;
the B-pillar reinforcement plate (10) is provided with a rear door lower hinge reinforcement plate (3), the rear door lower hinge reinforcement plate (3) is provided with a second guide deformation rib (30) corresponding to the first guide deformation rib in position, the rear door lower hinge reinforcement plate (3) is further provided with a plurality of bosses (31) arranged at intervals and facing the outside of the vehicle, each boss (31) is connected with the B-pillar reinforcement plate (10), and a buffer gap is formed between the rear door lower hinge reinforcement plate (3) and the B-pillar reinforcement plate (10).
9. A B-pillar structure for enhancing safety as claimed in claim 8, wherein: the bottom of the B column supporting plate (20) is located below the top end of the rear door lower hinge reinforcing plate (3), and the overlapping height of the B column supporting plate (20) and the rear door lower hinge reinforcing plate (3) in the height direction is not less than 80 mm.
10. A B-pillar structure for enhancing safety as claimed in claim 1, wherein: the B-pillar structure comprises an upper boundary beam (4), the top of a B-pillar inner plate (11) extends upwards to form an overlapping part, the overlapping part is located on the outer side of the upper boundary beam (4), and the top of the B-pillar inner plate (11) and the overlapping part are connected with the upper boundary beam (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210837677.5A CN115092261A (en) | 2022-07-15 | 2022-07-15 | B-pillar structure for improving safety performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210837677.5A CN115092261A (en) | 2022-07-15 | 2022-07-15 | B-pillar structure for improving safety performance |
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| CN115092261A true CN115092261A (en) | 2022-09-23 |
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| CN202210837677.5A Pending CN115092261A (en) | 2022-07-15 | 2022-07-15 | B-pillar structure for improving safety performance |
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