CN217893041U - Side wall reinforcing plate, vehicle body frame assembly and vehicle - Google Patents

Abstract

The application discloses side wall reinforcing plate, automobile body frame assembly and vehicle. The side wall reinforcing plate includes: the front end of the A-column upper edge beam is provided with a downward extending section, the lower end of the downward extending section is connected with the upper end of the A-column reinforcing plate through laser tailor-welding, the downward extending section is provided with a first fixing part used for fixing the rear end of the thumb beam, and the A-column reinforcing plate is provided with a second fixing part used for fixing the rear end of the thumb beam. In the side wall reinforcing plate, the A-column reinforcing plate and the A-column upper edge beam are connected through the surface welded by the laser, the connecting range between the A-column reinforcing plate and the A-column upper edge beam is enlarged, meanwhile, the welding position is moved downwards to a structure stress uniform area behind the thumb beam, the stress concentration condition during small offset collision is avoided, and the problem that welding spots formed by spot welding are torn is avoided.

Description

Side wall reinforcing plate, vehicle body frame assembly and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to but not limited to a side wall reinforcing plate, a vehicle body frame assembly and a vehicle.

Background

As shown in fig. 1, in the vehicle body frame assembly, the side wall reinforcing plate assembly is of a closed door ring structure, and comprises a doorsill reinforcing member 1', an a-pillar reinforcing plate 2', an a-pillar roof side rail 3', a B-pillar reinforcing plate 4', a C-pillar roof side rail 5', a C-pillar upper reinforcing plate 6', a C-pillar middle reinforcing plate 7 'and a C-pillar lower reinforcing plate 8', which are connected by spot welding. A thumb beam 9 '(also referred to as a short bar or left side cowl panel assembly, connected to a hood hinge, a fender, a charging port cover, a front end frame, a front combination light, etc.) is spot-welded to the a-pillar reinforcement panel 2', and the spot-welded position of the a-pillar reinforcement panel 2 'and the a-pillar roof rail 3' is above the thumb beam. In a small offset collision, collision force is transmitted to the a-pillar reinforcement plate 2 'through the thumb beam 9', and the spot welding position of the a-pillar reinforcement plate 2 'and the a-pillar roof rail 3' is a main stress concentration position, so that the problem of weld spot tearing often occurs.

SUMMERY OF THE UTILITY MODEL

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

A side gusset, comprising: the front end of the A column upper edge beam is provided with a downward extending section, the lower end of the downward extending section is connected with the upper end of the A column reinforcing plate through laser tailor welding, the downward extending section is provided with a first fixing part used for being fixed with the rear end of a thumb beam, and the A column reinforcing plate is provided with a second fixing part used for being fixed with the rear end of the thumb beam.

In some exemplary embodiments, the lower section is further provided with a third fixing portion for fixing with an upper door hinge mounting plate, and the a-pillar reinforcement plate is provided with a fourth fixing portion for fixing with the upper door hinge mounting plate.

In some exemplary embodiments, the side wall stiffener further includes a B-pillar stiffener, the rear end of the a-pillar roof rail and the B-pillar stiffener are connected by laser tailor welding, and the a-pillar stiffener, the a-pillar roof rail and the B-pillar stiffener cooperate to form an integrated half door ring structure having a downward opening.

In some exemplary embodiments, the side gusset further comprises a C-pillar stiffener, the C-pillar stiffener is laser tailor welded to the B-pillar stiffener, and the a-pillar stiffener, the a-pillar roof rail, the B-pillar stiffener, and the C-pillar stiffener cooperate to form an integrated M-door ring structure having two openings facing downward.

In some exemplary embodiments, the B-pillar reinforcing plate includes a B-pillar lower reinforcing plate, a B-pillar middle reinforcing plate, and a B-pillar upper reinforcing plate, the B-pillar upper reinforcing plate is T-shaped, a front end of the B-pillar upper reinforcing plate is connected to a rear end of the a-pillar upper edge beam by laser tailor welding, a lower end of the B-pillar upper reinforcing plate is connected to an upper end of the B-pillar middle reinforcing plate by laser tailor welding, and a lower end of the B-pillar middle reinforcing plate is connected to an upper end of the B-pillar lower reinforcing plate by laser tailor welding;

the C-column reinforcing plate comprises a C-column lower reinforcing plate and a C-column upper reinforcing plate, the front end of the C-column upper reinforcing plate is connected with the rear end of the B-column upper reinforcing plate in a laser tailor-welding mode, and the lower end of the C-column upper reinforcing plate is connected with the upper end of the C-column lower reinforcing plate in a laser tailor-welding mode.

A vehicle body frame assembly comprises the side wall reinforcing plate and the thumb beam in any one of the embodiments, and a second fixing part of the A-column reinforcing plate of the side wall reinforcing plate and a first fixing part of the lower extension section of the A-column upper edge beam are fixedly connected with the rear end of the thumb beam.

In some exemplary embodiments, the rear end of the thumb beam is located at the outer side of the side gusset, and the second fixing portion and the first fixing portion are both welded and fixed to the thumb beam.

In some exemplary embodiments, the vehicle body frame assembly further includes an upper door hinge mounting plate, and the fourth fixing portion of the a-pillar reinforcement plate and the third fixing portion of the lower section are fixedly connected to the upper door hinge mounting plate.

In some exemplary embodiments, the upper door hinge mounting plate is located at an inner side of the side gusset, and the fourth fixing portion and the third fixing portion are welded and fixed to the upper door hinge mounting plate.

A vehicle comprising a body frame assembly according to any one of the embodiments.

According to the side wall reinforcing plate, the upper end of the A column reinforcing plate is connected with the lower extension section of the A column upper edge beam in a laser tailor welding mode, compared with the mode that the A column reinforcing plate is connected with the A column upper edge beam in a spot welding mode, the A column reinforcing plate and the lower extension section of the A column upper edge beam are connected in a surface mode through the laser tailor welding mode, the connection range is widened, and the connection strength between the A column reinforcing plate and the A column upper edge beam is enhanced; in addition, the setting of lower extension for the tailor-welded position between A post reinforcing plate and the A post roof beam moves down, and the first fixed part on the second fixed part on the A post reinforcing plate and the lower extension of A post roof beam all is connected with the thumb beam, when little biasing collision, the impact transmits A post reinforcing plate and A post roof beam simultaneously via the thumb beam, the tailor-welded position of A post reinforcing plate and A post roof beam moves down the structure atress uniform region of the rear side of thumb beam, stress concentration position has been avoided, avoid the tearing problem of solder joint that spot welding formed to take place.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows.

Drawings

FIG. 1 is a schematic view of the assembled structure of a side gusset and a thumb beam in some cases;

FIG. 2 is a schematic structural view of a side gusset according to an embodiment of the present application;

FIG. 3 is a partial schematic structural view of a body frame assembly according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a side gusset according to another embodiment of the present application.

Reference numerals:

1': sill reinforcement, 2': column a reinforcing plate, 3': column a roof side rail, 4': column B reinforcing plate, 5': c-pillar roof side rail, 6': c-pillar upper reinforcing plate, 7': c-column middle reinforcement plate, 8': c column lower reinforcing plate, 9': a thumb beam;

1: column a reinforcing plate, 11: second fixing portion, 12: fourth fixing portion, 13: fifth fixing portion, 2: a-pillar roof side rail, 21: lower extension, 22: first fixing portion, 23: third fixing portion, 3: b-pillar reinforcement, 31: b-pillar lower reinforcement plate, 32: b-pillar middle reinforcement plate, 33: reinforcing plate on B-pillar, 4: c-pillar reinforcement, 41: c-pillar lower reinforcing plate, 42: c-pillar upper reinforcing plate, 51-56: laser welding seam, 6: thumb beam, 71: upper door hinge mounting plate, 72: lower door hinge mounting panel.

Detailed Description

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 2 and 3, the present embodiment provides a side gusset including: a post reinforcing plate 1 and A post roof side rail 2, the front end of A post roof side rail 2 is equipped with downwardly extending's lower extension 21, the lower extreme of lower extension 21 is connected through laser tailor-welding with the upper end of A post reinforcing plate 1, and lower extension 21 is equipped with and is used for the fixed first fixed part 22 with the rear end of thumb roof beam 6, A post reinforcing plate 1 is equipped with and is used for the fixed second fixed part 11 with the rear end of thumb roof beam 6.

In the side wall reinforcing plate of the embodiment, the upper end of the A column reinforcing plate 1 is connected with the lower extension section 21 of the A column upper edge beam 2 in a laser welding manner, and a laser welding seam 51 is formed, compared with the mode that the A column reinforcing plate 2 'is in point connection with the A column upper edge beam 3' in the figure 1 through spot welding, the A column reinforcing plate 1 and the lower extension section 21 of the A column upper edge beam 2 in the embodiment of the application are in surface connection through laser welding, so that the connection range is widened, and the connection strength between the A column reinforcing plate 1 and the A column upper edge beam 2 is favorably enhanced; in addition, the lower extension 21 is arranged, so that the welding position (laser welding seam 51) between the A-pillar reinforcing plate 1 and the A-pillar upper edge beam 2 moves downwards, the second fixing part 11 on the A-pillar reinforcing plate 1 and the first fixing part 22 on the lower extension 21 of the A-pillar upper edge beam 2 are connected with the thumb beam 6, the thumb beam 6 spans the laser welding seam 51 between the A-pillar reinforcing plate 1 and the A-pillar upper edge beam 2, when small offset collision occurs, collision force can be transmitted to the A-pillar reinforcing plate 1 and the A-pillar upper edge beam 2 simultaneously through the thumb beam 6, the welding position of the A-pillar reinforcing plate 1 and the A-pillar upper edge beam 2 moves downwards to a structure stress uniform area at the rear side of the thumb beam 6, the stress concentration position is avoided, and the problem that welding spots formed by spot welding are torn is avoided.

Therefore, according to the side wall reinforcing plate of the embodiment, spot welding point connection between the A-column reinforcing plate 1 and the A-column upper edge beam 2 is changed into laser tailor-welded surface connection, the connection range between the A-column reinforcing plate and the A-column upper edge beam is enlarged, meanwhile, the tailor-welded position is moved downwards to a structure stress uniform area behind the thumb beam 6, limitation of spot welding connection design is avoided, and stress concentration during small offset collision is avoided.

In some exemplary embodiments, as shown in fig. 2, the first fixing portion 22 is located at the front end of the lower section 21, and the second fixing portion 11 is located at the front end of the a-pillar stiffener 1 and near the upper end of the a-pillar stiffener 1. The first fixing portion 22 and the second fixing portion 11 may be welding fixing portions.

As shown in fig. 3, when the thumb beam 6 is fixedly connected to the side gusset, the thumb beam 6 may be located outside the side gusset and fixedly connected to the first fixing portion 22 and the second fixing portion 11 at the front end (e.g., welded and fixed by spot welding or gas shielded welding (e.g., carbon dioxide gas shielded welding)).

In some exemplary embodiments, as shown in fig. 2 and 3, the lower section 21 is further provided with a third fixing portion 23 for fixing with an upper door hinge mounting plate (shown by a dotted line in fig. 3) 71, and the a-pillar stiffener 1 is provided with a fourth fixing portion 12 for fixing with the upper door hinge mounting plate 71.

Be equipped with third fixed part 23 and fourth fixed part 12 on A post roof side rail 2 and the A post reinforcing plate 1 respectively, the hinge mount board 71 of going up can be fixed with third fixed part 23 and fourth fixed part 12 to realize the fixed connection of hinge mount board 71 of going up and side wall reinforcing plate.

Compare in fig. 1A post reinforcing plate 2' and A post roof side rail 3' through spot welding connection, and fix the face connection of upper gate hinge mount board spot welding on A post reinforcing plate 2', the side wall reinforcing plate of the embodiment of this application, because be laser tailor-welded between A post reinforcing plate 1 and the A post roof side rail 2, joint strength between the two improves, and the setting of laser welding piece 51, do not influence the fixed of third fixed part 23 and fourth fixed part 12 two and upper gate hinge mount board 71, consequently, can be with upper gate hinge mount board 71 simultaneously with A post reinforcing plate 1 and A post roof side rail 2 fixed connection, with the joint strength of reinforcing upper gate hinge mount board 71 and side wall reinforcing plate, and can avoid the solder joint that spot welding formed to tear.

In some exemplary embodiments, as shown in fig. 2, the third fixing portion 23 is located at the middle of the lower section 21, and the fourth fixing portion 12 is located at the middle of the a-pillar reinforcement panel 1 and near the upper end of the a-pillar reinforcement panel 1. Wherein, the third fixing portion 23 and the fourth fixing portion 12 may be welding fixing portions.

As shown in FIG. 3, when the upper door hinge mounting plate 71 is fixedly connected to the side gusset, the upper door hinge mounting plate 71 may be positioned at the inner side of the side gusset and fixedly connected to the third fixing portion 23 and the fourth fixing portion 12 (e.g., welded by spot welding or gas shielded welding (e.g., carbon dioxide gas shielded welding)).

In some exemplary embodiments, as shown in fig. 2 and 3, the a-pillar reinforcement plate 1 may further include a fifth fixing portion 13 for fixing to a lower door hinge mounting plate (shown by a dotted line in fig. 3) 72, and the fifth fixing portion 13 may be located below the fourth fixing portion 12.

When the lower door hinge mounting plate 72 is fixedly connected with the side wall reinforcing plate, the lower door hinge mounting plate 72 can be positioned on the inner side of the side wall reinforcing plate, and the fifth fixing part 13 of the A-column reinforcing plate 1 is fixedly connected (for example, welded and fixed by spot welding or gas shielded welding (for example, carbon dioxide gas shielded welding)).

In some exemplary embodiments, as shown in fig. 2, the side gusset further includes a B-pillar reinforcement plate 3, the rear end of the a-pillar roof rail 2 and the B-pillar reinforcement plate 3 are connected by laser tailor welding, and the a-pillar reinforcement plate 1, the a-pillar roof rail 2 and the B-pillar reinforcement plate 3 cooperate to form an integrated half-door ring structure.

In the side wall reinforcing plate, the front end of an A-pillar upper edge beam 2 is provided with a downward extension section 21, the rear end of the A-pillar upper edge beam 2 extends backwards and upwards in an inclined manner, the downward extension section 21 at the front end of the A-pillar upper edge beam 2 is in laser tailor welding with the A-pillar reinforcing plate 1, the rear end of the A-pillar upper edge beam 2 and the B-pillar reinforcing plate 3 are in laser tailor welding and then are subjected to hot stamping to form an integrated half-door ring structure, the whole half-door ring structure can be approximately C-shaped and is provided with a downward opening, the half-door ring structure can be connected with a doorsill reinforcing piece (see figure 1) (for example, the half-door ring structure is connected with a FDS (Flow Drill Screw thread) through spot welding or FDS (FDS), so that the opening of the half-door ring structure is closed to form a closed door ring structure, and the door ring structure can be used for supporting a front vehicle door.

The half door ring structure formed by the side wall reinforcing plate integrally adopts laser tailor welding, so that the A column reinforcing plate 1, the A column upper boundary beam 2 and the B column reinforcing plate 3 can be designed with different materials and thicknesses, namely different materials and thicknesses can be designed in different areas of the side wall reinforcing plate according to actual requirements, and the A column reinforcing plate 1, the A column upper boundary beam 2 and the B column reinforcing plate 3 are in tailor welding connection, so that the lap joint area of spot welding of parts can be reduced, and the integral weight reduction is realized; the integrated design of the half door ring structure integrates other parts (an A column reinforcing plate 1, an A column upper boundary beam 2, a B column reinforcing plate 3 and the like) in the door ring structure except for a threshold reinforcing piece into one part, so that the tooling cost is greatly reduced, and the number of hot forming dies, cold stamping dies, welding fixtures, welding robots and part checking tools are reduced; the half door ring structure reduces the number of welding spots, improves the welding rhythm, reduces the stamping working time and improves the production efficiency; the half door ring structure can complete laser tailor-welding without the support of a special clamp, thereby reducing the number of required clamps and further reducing the tooling cost; the method for forming the semi-door ring structure by laser tailor-welding and then connecting the semi-door ring structure with the threshold reinforcement is favorable for reducing tolerance accumulation, so that the consistency of semi-door ring products is ensured, and the tolerance precision of the products is favorably controlled.

Therefore, the half door ring structure of this embodiment, when practicing thrift raw and other materials, can guarantee the thickness of each part, satisfy the safe strength requirement of half door ring different positions, guarantee the security of vehicle and alleviate the weight of vehicle.

In some exemplary embodiments, the side gusset may further include an a-pillar gusset (not shown) that may be spot welded to the a-pillar roof rail 2. The A-pillar reinforcing plate can be in an inclined long strip shape and is fixed on the upper portion of the A-pillar upper side beam 2.

In order to cope with a small offset collision, an a-pillar reinforcement plate is fixed to the upper portion of the a-pillar roof side rail 2. By adopting the reinforcing plate technology, the good force transfer performance of the upper part of the side wall reinforcing plate can be ensured, and the collision and bending of the half door ring structure are avoided.

In some exemplary embodiments, the thickness of the a-pillar stiffener 1 < the thickness of the a-pillar stiffener < the thickness of the a-pillar roof side rail 2.

In some exemplary embodiments, the yield strength of the a-pillar stiffener 1 is < the yield strength of the a-pillar stiffener, and the yield strength of the a-pillar roof side rail 2 is < the yield strength of the a-pillar stiffener. Wherein, the yield strength of the A-pillar reinforcing plate 1 can be equal to that of the A-pillar roof side rail 2.

In some exemplary embodiments, the tensile strength of the a-pillar stiffener 1 is less than that of the a-pillar stiffener, and the tensile strength of the a-pillar roof side rail 2 is less than that of the a-pillar stiffener. Wherein, the tensile strength of the A-pillar reinforcing plate 1 can be equal to that of the A-pillar upper edge beam 2.

In some exemplary embodiments, the A-pillar reinforcement plate 1 is a steel plate and has a thickness of 1.1mm, a yield strength greater than 950MPa, and a tensile strength greater than 1300MPa. For example, the type of the steel used for the a-pillar reinforcement plate 1 may be CR950/1300HS-AS, where CR (Cold Rolled) represents Cold rolling, HS (Hot Stamping) represents Hot Stamping, 950/1300HS represents minimum yield strength value/minimum tensile strength value after Hot Stamping, and AS (initials of Al, si) represents a Cold-Rolled Hot-dip aluminum-silicon product.

The A column upper edge beam 2 is a steel plate, the thickness of the A column upper edge beam is 1.8mm, the yield strength is greater than 950MPa, and the tensile strength is greater than 1300MPa. For example, the type of steel used for the A-pillar roof side rail 2 may be CR950/1300HS-AS. That is, the a-pillar reinforcing plate 1 and the a-pillar roof side rail 2 may be made of the same material, but have different thicknesses.

The A column reinforcing plate is a steel plate, the thickness of the A column reinforcing plate is 1.6mm, the yield strength is larger than 1200MPa, and the tensile strength is larger than 1800MPa. For example, the type of steel used for the A-pillar stiffener may be CR1200/1800HS-AS.

In order to deal with small offset collision, the reinforcing plate technology is adopted, the A column reinforcing plate can be designed by adopting a thermal forming material with yield strength larger than 1200Mpa, tensile strength larger than 1700Mpa and thickness of 1.6mm, good force transmission of the upper part of the A column reinforcing plate 1 is ensured, and collision and bending are avoided.

Of course, the material, thickness, yield strength, tensile strength, and the like of the a-pillar reinforcement plate 1, the a-pillar reinforcement plate, and the a-pillar roof side rail 2 are not limited to those described above, and may be designed according to actual needs.

In some exemplary embodiments, as shown in fig. 2, the B-pillar reinforcing plate 3 includes a B-pillar lower reinforcing plate 31, a B-pillar middle reinforcing plate 32, and a B-pillar upper reinforcing plate 33, the whole B-pillar upper reinforcing plate 33 may be T-shaped, a front end of the B-pillar upper reinforcing plate 33 is connected to a rear end of the a-pillar upper sill 2 by laser tailor welding, a lower end of the B-pillar upper reinforcing plate 33 is connected to an upper end of the B-pillar middle reinforcing plate 32 by laser tailor welding, and a lower end of the B-pillar middle reinforcing plate 32 is connected to an upper end of the B-pillar lower reinforcing plate 31 by laser tailor welding.

In the B-pillar reinforcing plate 3, the lower end of a B-pillar lower reinforcing plate 31 is used for being connected with a threshold reinforcing piece; the upper end of the B-pillar lower reinforcing plate 31 and the lower end of the B-pillar middle reinforcing plate 32 are subjected to laser tailor welding, and a laser welding seam 54 is formed; the upper end of the reinforcing plate 32 in the B column and the lower end of the reinforcing plate 33 on the B column are subjected to laser tailor welding, and a laser welding seam 53 is formed; the front end of the B-pillar upper reinforcing plate 33 is laser tailor welded to the rear end of the a-pillar roof side rail 2, and a laser weld seam 52 is formed.

In some exemplary embodiments, the thickness of the B-pillar lower reinforcing plate 31 < the thickness of the B-pillar middle reinforcing plate 32 < the thickness of the B-pillar upper reinforcing plate 33.

In some exemplary embodiments, the yield strength of the B-pillar lower reinforcement plate 31 < the yield strength of the B-pillar middle reinforcement plate 32, and the yield strength of the B-pillar lower reinforcement plate 31 < the yield strength of the B-pillar upper reinforcement plate 33. Wherein the yield strength of the reinforcing plate 32 in the B-pillar may be equal to the yield strength of the reinforcing plate 33 on the B-pillar.

In some exemplary embodiments, the tensile strength of the B-pillar lower reinforcing plate 31 is < the tensile strength of the B-pillar middle reinforcing plate 32, and the tensile strength of the B-pillar lower reinforcing plate 31 is < the tensile strength of the B-pillar upper reinforcing plate 33. Wherein the tensile strength of the reinforcing plate 32 in the B-pillar may be equal to the tensile strength of the reinforcing plate 33 on the B-pillar.

In some exemplary embodiments, the B-pillar lower reinforcement plate 31 is a steel plate and has a thickness of 1.2mm, a yield strength greater than 350MPa, and a tensile strength greater than 500MPa. For example, the type of steel used for the B-pillar lower gusset 31 may be CR350/500HS-AS.

The reinforcing plate 32 in the column B is a steel plate, the thickness of the reinforcing plate is 1.4mm, the yield strength is greater than 950MPa, and the tensile strength is greater than 1300MPa. For example, the steel used for the reinforcement plate 32 in the B-pillar may be CR950/1300HS-AS.

The B column upper reinforcing plate 33 is a steel plate, the thickness of the B column upper reinforcing plate is 1.8mm, the yield strength is greater than 950MPa, and the tensile strength is greater than 1300MPa. For example, the steel material used for the B-pillar upper gusset 33 may be CR950/1300HS-AS. That is, the B-pillar middle reinforcing plate 32 and the B-pillar upper reinforcing plate 33 may be made of the same material, but have different thicknesses.

During side collision, the lower section area (the lower reinforcing plate 31 of the B column) of the B column reinforcing plate 3 deforms greatly, and the high-yield thermal forming material has high brittleness, so that the thermal forming material with the thickness of 1.2mm, the yield strength of more than 350MPa and the tensile strength of more than 500MPa can be selected, the ductility of the lower section area of the B column reinforcing plate 3 is increased, and the problem of easy cracking during collision is avoided.

The half door ring structure of the embodiment forms six components, namely an A-column reinforcing plate 1, an A-column upper edge beam 2, an A-column reinforcing plate, a B-column lower reinforcing plate 31, a B-column middle reinforcing plate 32 and a B-column upper reinforcing plate 33 through six tablets made of different materials and/or different thicknesses, and realizes the connection of the A-column reinforcing plate 1, the A-column upper edge beam 2, the B-column lower reinforcing plate 31, the B-column middle reinforcing plate 32 and the B-column upper reinforcing plate 33 through laser tailor welding to form four sections of laser welding seams 51-54, so that the integrated design of different performances in different areas is realized.

Of course, the material, thickness, yield strength, tensile strength, and the like of the B-pillar lower reinforcing plate 31, the B-pillar middle reinforcing plate 32, and the B-pillar upper reinforcing plate 33 are not limited to those described above, and may be designed according to actual needs.

The side wall reinforcing plate can be processed and manufactured by the following method:

a) Respectively and independently composing and blanking components of the side wall reinforcing plate, namely an A column reinforcing plate 1, an A column upper edge beam 2, a B column lower reinforcing plate 31, a B column middle reinforcing plate 32 and a B column upper reinforcing plate 33 to obtain a material sheet of the A column reinforcing plate 1, a material sheet of the A column upper edge beam 2, a material sheet of the B column lower reinforcing plate 31, a material sheet of the B column middle reinforcing plate 32 and a material sheet of the B column upper reinforcing plate 33;

b) Connecting the material sheet of the A-column reinforcing plate 1 with the material sheet of the A-column upper edge beam 2 through a laser tailor welding technology to form a first material sheet assembly; connecting the material sheet of the B-column lower reinforcing plate 31, the material sheet of the B-column middle reinforcing plate 32 and the material sheet of the B-column upper reinforcing plate 33 through a laser tailor welding technology to form a second material sheet assembly;

c) Connecting the first material sheet assembly and the second material sheet assembly through a laser tailor welding technology to form a material sheet assembly;

d) Forming an integrated half-door ring structure by the sheet assembly through a hot forming stamping process;

e) And (4) carrying out laser trimming and hole opening on the integrated semi-door ring structure, and finally finishing the integrated semi-door ring structure finished product.

Under the condition that the side wall reinforcing plate further comprises an A-column reinforcing plate, the material sheet assembly and the A-column reinforcing plate can be connected through traditional spot welding, and then the material sheet assembly fixed with the A-column reinforcing plate is subjected to a thermoforming and stamping process.

Compared with the scheme that the closed door ring structure is formed integrally by adopting laser tailor welding, the method for processing the side wall reinforcing plate of the half door ring structure adopts the closed size chain loop of the closed door ring material sheet when the closed door ring structure is formed integrally by adopting laser tailor welding, and needs to adopt curve tailor welding during laser tailor welding, so that a tailor welding clamp is needed for positioning during tailor welding, which results in high tool cost and low production efficiency; in the embodiment, the whole body adopts the laser tailor-welding to form the open half door ring structure, the size chain of the half door ring material sheet is not closed, the linear tailor-welding is performed when the first material sheet component and the second material sheet component are formed by tailor-welding, and the linear tailor-welding is still performed when the first material sheet component and the second material sheet component are tailor-welded to form the material sheet assembly, so that the curve welding is not used during the tailor-welding, a tailor-welding clamp is not needed, the tooling cost is reduced, and the production efficiency is improved.

The side wall reinforcing plate of the half door ring structure of the embodiment balances the performance requirements of vehicle body safety, NVH, strength, light weight and the like in structural design, and adopts a relatively free laser tailor-welding process with small influence on the structure; materials with different materials and thicknesses are configured according to safety performance requirements of different areas of the side wall reinforcing plate, an A column reinforcing plate is designed on the A column upper edge beam 2 (connected with the A column upper edge beam 2 in a spot welding mode), and design of a part joint structure is optimized; finally, through the hot forming technology, form half door ring structure of integral type hot forming, realize the integrated design of spare part to reduce the frock cost by a wide margin, promote production efficiency, subtract about 15% of weight.

In addition, the semi-door ring structure of the embodiment is based on a laser tailor-welding process in the manufacturing process, and after each part is subjected to sample arrangement and blanking independently, a semi-annular material sheet is formed, so that the material utilization rate is greatly improved; meanwhile, compared with an integral door ring structure in some cases, the size chain is closed, so that a clamp is needed for positioning, and after improvement, due to the design of the semi-annular material sheet, the size chains of a plurality of parts can be absorbed, so that laser connection can be completed without the support of a special material sheet clamp, and the tooling cost is reduced; after the laser tailor-welding is finished, a thermal forming process is adopted to form a half door ring structure, and when a die is designed, a hydraulic lifting mechanism can be designed to realize synchronous lifting of the A column reinforcing plate 1, the A column upper boundary beam 2 and the B column reinforcing plate 3, so that the distortion and deformation of parts are reduced, and finally, laser cutting and trimming are performed to form an integral thermal forming half door ring structure product with controllable tolerance.

As shown in fig. 2 and fig. 3, the embodiment of the present application further provides a vehicle body frame assembly, which includes a side wall reinforcing plate and a thumb beam 6, and both the second fixing portion 11 of the a-pillar reinforcing plate 1 of the side wall reinforcing plate and the first fixing portion 22 of the lower extension 21 of the a-pillar roof rail 2 are fixedly connected to the rear end of the thumb beam 6.

In this automobile body frame assembly, be the face connection of laser tailor-welded between A post reinforcing plate 1 and the A post roof side rail 2, the rear end of thumb roof beam 6 and the second fixed part 11 of A post reinforcing plate 1 and the equal fixed connection of first fixed part 22 of the lower extension 21 of A post roof side rail 2, like this promote the range of connection between A post reinforcing plate 1 and the A post roof side rail 2 between, with the laser welding piece 51 between A post reinforcing plate 1 and the A post roof side rail move down the structure atress uniform region at thumb roof side rail 6 rear, stress concentration's the condition when having avoided little offset collision, avoid the tearing problem of solder joint that spot welding formed to take place.

In some exemplary embodiments, the rear end of the thumb beam 6 is located outside the side wall stiffener, and the second fixing part 11 and the first fixing part 22 are fixed to the thumb beam 6 by welding.

The rear end of thumb beam 6 can be located the outside of side wall reinforcing plate to can with the first fixed part 22 of A post reinforcing plate 1 front end and the second fixed part 11 welded fastening of the lower extension 21 front end of A post roof side rail 2, if: the welding fixation can be carried out by spot welding or gas shielded welding (such as carbon dioxide gas shielded welding), so that the connection strength of the thumb beam 6, the A column reinforcing plate 1 and the A column upper edge beam 2 is enhanced, and the connection strength of the thumb beam 6 and the side wall reinforcing plate is further enhanced.

In some exemplary embodiments, as shown in fig. 2 and 3, the body frame assembly further includes an upper door hinge mounting plate 71, and the fourth fixing portion 12 of the a-pillar stiffener 1 and the third fixing portion 23 of the lower section 21 are fixedly connected to the upper door hinge mounting plate 71.

Be equipped with third fixed part 23 and fourth fixed part 12 on the lower extension 21 of A post roof side rail 2 and the A post reinforcing plate 1 respectively, go up door hinge mounting panel 71 can be simultaneously with third fixed part 23 and fourth fixed part 12 fixed connection to the joint strength of door hinge mounting panel 71 and side wall reinforcing plate in the reinforcing, and the solder joint takes place to tear when having avoided connecting through spot welding between A post reinforcing plate 1 and the A post roof side rail 2.

In some exemplary embodiments, the upper door hinge mounting plate 71 is located at the inner side of the side gusset, and the fourth fixing portion 12 and the third fixing portion 23 are welded and fixed to the upper door hinge mounting plate 71.

The upper door hinge mounting plate 71 can be located on the inner side of the side wall reinforcing plate and is welded and fixed with the third fixing part 23 on the lower extension 21 of the a-pillar upper beam 2 and the fourth fixing part 12 on the a-pillar reinforcing plate 1, as follows: the upper door hinge mounting plate 71 is welded and fixed through spot welding or gas shielded welding (such as carbon dioxide shielded welding), the connecting strength of the upper door hinge mounting plate 71, the A column reinforcing plate 1 and the A column upper edge beam 2 is enhanced, and the connecting strength of the upper door hinge mounting plate 71 and the side wall reinforcing plate is further enhanced.

In some exemplary embodiments, as shown in fig. 2 and 3, the vehicle body frame assembly further includes a lower door hinge mounting plate 72, and the lower door hinge mounting plate 72 may be fixedly connected to the fifth fixing portion 13 of the a-pillar stiffener, such as: the welding fixation is performed by spot welding or gas shielded welding (e.g., carbon dioxide gas shielded welding).

The embodiment also provides a vehicle, which comprises the vehicle body frame assembly provided by any one of the above embodiments.

The vehicle may be an electric or hybrid vehicle or other type of vehicle.

Example two:

the embodiment provides a side wall reinforcing plate, a vehicle body frame assembly and a vehicle, and the main difference of the embodiment from the first embodiment is that the side wall reinforcing plate further comprises a C-column reinforcing plate 4.

As shown in fig. 4, the side wall reinforcing plate of the present embodiment includes a C-pillar reinforcing plate 4 in addition to the a-pillar reinforcing plate 1, the a-pillar roof rail 2, and the B-pillar reinforcing plate 3, the C-pillar reinforcing plate 4 is connected to the B-pillar reinforcing plate by laser tailor welding, so that the a-pillar reinforcing plate 1, the a-pillar roof rail 2, the B-pillar reinforcing plate 3, and the C-pillar reinforcing plate 4 cooperate to form an integrated M-shaped door ring structure.

According to the side wall reinforcing plate, an A column reinforcing plate 1, an A column upper edge beam 2, a B column reinforcing plate 3 and a C column reinforcing plate 4 are spliced and welded through laser, and then an integrated M-shaped door ring structure is formed through hot stamping, and the M-shaped door ring structure can be provided with two downward openings. The M-shaped door ring structure may be connected to a sill reinforcement to form a body frame assembly, and the sill reinforcement may close two openings of the M-shaped door ring structure to form two closed door ring structures that may be used to support a front door and a rear door, respectively.

The M-shaped door ring structure is connected by laser tailor-welding, so that each part of the A-column reinforcing plate 1, the A-column upper edge beam 2, the B-column reinforcing plate 3 and the C-column reinforcing plate 4 can be designed with different materials and thicknesses, namely different materials and thicknesses can be designed in different areas of the side wall reinforcing plate according to actual requirements, so that the safety strength requirements of different positions of the M-shaped door ring structure are met, and the safety of a vehicle is ensured; the A column reinforcing plate 1, the A column upper edge beam 2, the B column reinforcing plate 3 and the C column reinforcing plate 4 are connected in a tailor welding mode, the lap joint area of spot welding of parts can be reduced, integral weight reduction is achieved, and further the weight reduction of a vehicle is facilitated; the integrated design of the M-shaped door ring structure integrates other parts (an A column reinforcing plate 1, an A column upper boundary beam 2, a B column reinforcing plate 3, a C column reinforcing plate 4 and the like) except for a threshold reinforcing part in the closed door ring structure into one part, so that the tooling cost is greatly reduced, and the number of hot forming and cold stamping dies, welding fixtures, welding robots and part checking tools is reduced; the M-shaped gate ring structure reduces the number of welding spots, improves the welding tact, reduces the stamping working time and improves the production efficiency; the M-shaped gate ring structure can complete laser tailor-welding without the support of a special clamp, so that the number of required clamps is reduced, and the tooling cost is further reduced; the method for forming the M-shaped door ring structure by laser tailor-welding and then connecting the M-shaped door ring structure with the threshold reinforcement to form the closed door ring structure is beneficial to reducing tolerance accumulation, thereby ensuring the consistency of M-shaped door ring products and being beneficial to controlling the tolerance precision of the products.

Therefore, the M-shaped door ring structure of this embodiment, when practicing thrift raw and other materials, can guarantee the thickness of each part, satisfy the safe strength requirement of M-shaped door ring different positions, guarantee the security of vehicle and alleviate the weight of vehicle.

In some exemplary embodiments, as shown in fig. 4, the C-pillar reinforcing plate 4 includes a C-pillar lower reinforcing plate 41 and a C-pillar upper reinforcing plate 42, a front end of the C-pillar upper reinforcing plate 42 is laser-tailor welded to a rear end of the B-pillar upper reinforcing plate 33, and a lower end of the C-pillar upper reinforcing plate 42 is laser-tailor welded to an upper end of the C-pillar lower reinforcing plate 41.

In the C-pillar reinforcing plate 4, the lower end of the C-pillar lower reinforcing plate 41 is used for being connected with a threshold reinforcement, the upper end of the C-pillar lower reinforcing plate 41 is in laser tailor welding with the lower end of the C-pillar upper reinforcing plate 42, and a laser welding seam 56 is formed; the front end of the C-pillar upper reinforcement plate 42 is laser tailor welded to the rear end of the B-pillar upper reinforcement plate 33, and a laser weld seam 55 is formed.

In some exemplary embodiments, the thickness of the a-pillar stiffener 1 < the thickness of the a-pillar roof rail 2.

In some exemplary embodiments, the yield strength of the a-pillar stiffener 1 < the yield strength of the a-pillar roof rail 2.

In some exemplary embodiments, the tensile strength of the a-pillar stiffener 1 < the tensile strength of the a-pillar roof rail 2.

In some exemplary embodiments, the A-pillar reinforcement plate 1 is a steel plate and has a thickness of 1.1mm, a yield strength greater than 780MPa, and a tensile strength greater than 980MPa. For example, the type of steel used for the A-pillar reinforcement plate 1 may be CR780/980HS-AS.

The A column upper edge beam 2 is a steel plate, the thickness of the A column upper edge beam is 1.8mm, the yield strength is greater than 950MPa, and the tensile strength is greater than 1300MPa. For example, the type of steel used for the A-pillar roof side rail 2 may be CR950/1300HS-AS.

Of course, the a-pillar stiffener 1 may be spot-welded to the a-pillar roof side rail 2 as necessary.

In some exemplary embodiments, the thickness of the B-pillar lower reinforcing plate 31 < the thickness of the B-pillar middle reinforcing plate 32 < the thickness of the B-pillar upper reinforcing plate 33.

In some exemplary embodiments, the yield strength of the B-pillar lower reinforcement plate 31 < the yield strength of the B-pillar middle reinforcement plate 32, and the yield strength of the B-pillar lower reinforcement plate 31 < the yield strength of the B-pillar upper reinforcement plate 33. Wherein the yield strength of the reinforcing plate 32 in the B-pillar may be equal to the yield strength of the reinforcing plate 33 on the B-pillar.

In some exemplary embodiments, the tensile strength of the B-pillar lower reinforcing plate 31 < the tensile strength of the B-pillar middle reinforcing plate 32, and the tensile strength of the B-pillar lower reinforcing plate 31 < the tensile strength of the B-pillar upper reinforcing plate 33. Wherein the tensile strength of the reinforcing plate 32 in the B-pillar may be equal to the tensile strength of the reinforcing plate 33 on the B-pillar.

In some exemplary embodiments, the B-pillar lower reinforcement plate 31 is a steel plate and has a thickness of 1.2mm, a yield strength greater than 350MPa, and a tensile strength greater than 500MPa. For example, the type of steel used for the B-pillar lower gusset 31 may be CR350/500HS-AS.

The reinforcing plate 32 in the column B is a steel plate, the thickness of the reinforcing plate is 1.4mm, the yield strength is greater than 950MPa, and the tensile strength is greater than 1300MPa. For example, the steel used for the reinforcement plate 32 in the B-pillar may be CR950/1300HS-AS.

The B column upper reinforcing plate 33 is a steel plate, the thickness of the B column upper reinforcing plate is 1.6mm, the yield strength is greater than 950MPa, and the tensile strength is greater than 1300MPa. For example, the steel material used for the B-pillar upper gusset 33 may be CR950/1300HS-AS. That is, the B-pillar middle reinforcing plate 32 and the B-pillar upper reinforcing plate 33 may be made of the same material, but have different thicknesses.

In some exemplary embodiments, the thickness of the C-pillar lower reinforcement plate 41 < the thickness of the C-pillar upper reinforcement plate 42.

In some exemplary embodiments, the yield strength of the C-pillar lower reinforcement plate 41 = the yield strength of the C-pillar upper reinforcement plate 42.

In some exemplary embodiments, the tensile strength of the C-pillar lower reinforcing plate 41 = the tensile strength of the C-pillar upper reinforcing plate 42.

In some exemplary embodiments, the C-pillar lower reinforcement plate 41 is a steel plate and has a thickness of 1.0mm, a yield strength greater than 950MPa, and a tensile strength greater than 1300MPa. For example, the type of steel used for the C-pillar lower reinforcement plate 41 may be CR950/1300HS-AS.

The C column upper reinforcing plate 42 is a steel plate, the thickness of the C column upper reinforcing plate is 1.2mm, the yield strength is larger than 950MPa, and the tensile strength is larger than 1300MPa. For example, the C-pillar upper stiffener plate 42 may be of the type CR950/1300HS-AS steel. That is, the C-pillar lower reinforcing plate 41 and the C-pillar upper reinforcing plate 42 may be made of the same material, but have different thicknesses.

Of course, the material, thickness, yield strength, tensile strength, and the like of the a-pillar reinforcement 1, the a-pillar roof side rail 2, the B-pillar lower reinforcement 31, the B-pillar middle reinforcement 32, the B-pillar upper reinforcement 33, the C-pillar lower reinforcement 41, and the C-pillar upper reinforcement 42 are not limited to the above, and may be designed according to actual needs.

The side wall reinforcing plate can be processed and manufactured by the following method:

a) Respectively and independently composing and blanking components of the side wall reinforcing plate, namely an A column reinforcing plate 1, an A column upper edge beam 2, a B column lower reinforcing plate 31, a B column middle reinforcing plate 32, a B column upper reinforcing plate 33, a C column lower reinforcing plate 41 and a C column upper reinforcing plate 42 to obtain a material sheet of the A column reinforcing plate 1, a material sheet of the A column upper edge beam 2, a material sheet of the B column lower reinforcing plate 31, a material sheet of the B column middle reinforcing plate 32, a material sheet of the B column upper reinforcing plate 33, a material sheet of the C column lower reinforcing plate 41 and a material sheet of the C column upper reinforcing plate 42;

b) Connecting the material sheet of the A-column reinforcing plate 1 with the material sheet of the A-column upper edge beam 2 through a laser tailor welding technology to form a first material sheet assembly; connecting the material sheet of the B-column lower reinforcing plate 31, the material sheet of the B-column middle reinforcing plate 32 and the material sheet of the B-column upper reinforcing plate 33 through a laser tailor welding technology to form a second material sheet assembly; connecting the material sheet of the C-column lower reinforcing plate 41 with the material sheet of the C-column upper reinforcing plate 42 by a laser tailor welding technology to form a third material sheet assembly;

c) Connecting the first material sheet assembly and the second material sheet assembly through a laser tailor welding technology, and connecting the second material sheet assembly and the third material sheet assembly through the laser tailor welding technology to form a material sheet assembly;

d) Forming an integrated M-shaped door ring structure by the sheet assembly through a hot forming and stamping process;

e) And (4) carrying out laser trimming and hole opening on the integrated M-shaped door ring structure, and finally finishing the integrated M-shaped door ring structure finished product.

The side wall reinforcing plate of this embodiment forms M type door ring structure, when getting in the course of working, usable hydraulic pressure lifting structure is with synchronous lifting of A post reinforcing plate 1, A post roof side rail 2, B post reinforcing plate 3 and C post reinforcing plate 4, avoids spare part distortion.

Compared with the scheme that the closed door ring structure is formed integrally by adopting laser tailor-welding, the method for processing the side wall reinforcing plate of the M-shaped door ring structure adopts the size chain closed loop of the closed door ring material sheet when the closed door ring structure is formed integrally by adopting laser tailor-welding, and needs to adopt curve tailor-welding during laser tailor-welding, so that a tailor-welding clamp is needed for positioning during tailor-welding, which results in high tooling cost and low production efficiency; in the embodiment, the laser tailor-welding is adopted to form the open M-shaped door ring structure integrally, the size chain of the M-shaped door ring material sheet is not closed, the first material sheet component, the second material sheet component and the third material sheet component are in straight line tailor-welding when the first material sheet component, the second material sheet component and the third material sheet component are formed in tailor-welding, and the first material sheet component, the second material sheet component and the third material sheet component are in straight line tailor-welding when the material sheet assembly is formed in tailor-welding, so that the curve welding is not used in tailor-welding, a tailor-welding clamp is not needed, the tool cost is reduced, and the production efficiency is improved.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims (10)

1. A side gusset, comprising: the front end of the A-column upper edge beam is provided with a downward extending section, the lower end of the downward extending section is connected with the upper end of the A-column reinforcing plate through laser tailor-welding, the downward extending section is provided with a first fixing part used for fixing the rear end of the thumb beam, and the A-column reinforcing plate is provided with a second fixing part used for fixing the rear end of the thumb beam.

2. The side gusset panel of claim 1, wherein the lower section is further provided with a third fixing portion for fixing with an upper door hinge mounting plate, and the a-pillar reinforcement panel is provided with a fourth fixing portion for fixing with the upper door hinge mounting plate.

3. The side wall gusset plate according to claim 1 or 2, further comprising a B-pillar reinforcement plate, wherein the rear end of the A-pillar roof rail and the B-pillar reinforcement plate are connected by laser tailor welding, and the A-pillar reinforcement plate, the A-pillar roof rail and the B-pillar reinforcement plate cooperate to form an integrated half-door ring structure, and the half-door ring structure has a downward opening.

4. The side gusset panel of claim 3, further comprising a C-pillar stiffener, the C-pillar stiffener being laser tailor welded to the B-pillar stiffener, and the A-pillar stiffener, the A-pillar roof rail, the B-pillar stiffener, and the C-pillar stiffener cooperating to form an integral M-shaped door ring structure having two downwardly facing openings.

5. The side wall reinforcing plate according to claim 4, wherein the B-pillar reinforcing plate comprises a B-pillar lower reinforcing plate, a B-pillar middle reinforcing plate and a B-pillar upper reinforcing plate, the B-pillar upper reinforcing plate is T-shaped, the front end of the B-pillar upper reinforcing plate is connected with the rear end of the A-pillar upper edge beam in a laser tailor-welding manner, the lower end of the B-pillar upper reinforcing plate is connected with the upper end of the B-pillar middle reinforcing plate in a laser tailor-welding manner, and the lower end of the B-pillar middle reinforcing plate is connected with the upper end of the B-pillar lower reinforcing plate in a laser tailor-welding manner;

the C-column reinforcing plate comprises a C-column lower reinforcing plate and a C-column upper reinforcing plate, the front end of the C-column upper reinforcing plate is connected with the rear end of the B-column upper reinforcing plate in a laser tailor-welding mode, and the lower end of the C-column upper reinforcing plate is connected with the upper end of the C-column lower reinforcing plate in a laser tailor-welding mode.

6. A vehicle body frame assembly comprising the side gusset of any one of claims 1 to 5 and a thumb rail, wherein the second fixing portion of the A-pillar gusset of the side gusset and the first fixing portion of the lower leg of the A-pillar roof rail are both fixedly connected to the rear end of the thumb rail.

7. The body frame assembly of claim 6 wherein the rear end of the thumb beam is located outboard of the side gusset and the second and first fastening portions are each welded to the thumb beam.

8. The body frame assembly according to claim 6 or 7, further comprising an upper door hinge mounting plate, wherein the fourth fixing portion of the A-pillar reinforcement plate and the third fixing portion of the lower section are fixedly connected to the upper door hinge mounting plate.

9. The body frame assembly of claim 8 wherein the upper door hinge mounting plate is located inboard of the side gusset, and the fourth and third securing portions are each welded to the upper door hinge mounting plate.

10. A vehicle comprising a body frame assembly according to any one of claims 6 to 9.

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