WO2019192390A1

WO2019192390A1 - Body-in-white frame assembly

Info

Publication number: WO2019192390A1
Application number: PCT/CN2019/080287
Authority: WO
Inventors: 劳兵; 司超群; 周士智; 谢贵山; 和丽梅; 黄岗
Original assignee: 上汽通用五菱汽车股份有限公司
Priority date: 2018-04-03
Filing date: 2019-03-29
Publication date: 2019-10-10
Also published as: CN110341805A

Abstract

A body-in-white frame assembly, comprising a vehicle frame body, a front-end frame, and two side enclosing frames. The front-end frame is fixed to a front side of the vehicle frame body. The two side enclosing frames are respectively fixed to a left side surface and a right side surface of the vehicle frame body. A left end and a right end of the front-end frame are respectively fixedly connected to front ends of the two side enclosing frames. The front-end frame comprises two upper curved beam column reinforcing plates (2). The two upper curved beam column reinforcing plates (2) extend downwards, and are respectively fixed on rear sides of corresponding upper curved beam columns (1) on a vehicle body. The body-in-white frame assembly resolves the issue of a weak connection between an upper curved beam column and a front longitudinal beam, prevents the longitudinal beam from being involved in a front column collision, and improves front column collision performance and the rigidity of a headlight mounting point, thereby improving passenger safety.

Description

Body-in-white frame assembly

Technical field

The present invention relates to a body-in-white frame assembly, and more particularly to a body-in-white frame assembly that enhances the connection strength of a white car.

Background technique

The body-in-white frame assembly acts as the main body to withstand the load and resist the impact of the collision. Its design plays a decisive role in the strength, rigidity, mode, safety and durability of the vehicle body, which directly affects the user's riding experience and subjective feeling. At present, the common body-in-white body frame, as shown in Fig. 1, includes a front body frame A', a front wheel cover assembly B', a side frame C', a sill assembly E' and a front wheel cover support assembly D'. Formed, the front end frame A' (Fig. 1a) is shown to include: an upper curved beam column 10' and a front side frame 11', and the front wheel cover assembly B' (Fig. 1b) comprises: a front wheel cover outer plate reinforcing plate 12' And the A-pillar lower side outer panel 13', the side wall frame C' (as shown in Fig. 1c) includes an A-pillar upper reinforcing plate 14', a side surrounding upper side beam outer plate 15', a side surrounding upper side beam inner plate 16', a C-pillar 17', B-pillar 18', rear wheel cover support plate 22' and C-pillar upper reinforcement plate 23', front wheel house support assembly D' (Fig. 1d) including rear wheel cover upper reinforcement plate 24' and overlapping portion 26' The sill assembly E' (Fig. 1e) includes a sill outer reinforcement panel 27' and a rear wheel housing outer panel 28'. In the design process of the above components, the following shortcomings often exist:

1. As shown in Fig. 1a, the lower end of the upper curved beam column 10' and the front longitudinal beam 11' are fixedly connected by a solder joint 29', and the upper curved beam column 10' is designed as an open structure 30', which is connected with the front longitudinal beam 11'. The weaker frontal column is easily torn, resulting in the front longitudinal beam 11' not participating in the collision, the deformation of the vehicle body is large, the acceleration signal received by the vehicle body is weak, and the airbag does not ignite, which affects passenger safety;

2. As shown in Fig. 1b, the front wheel cover outer panel reinforcing plate 12' and the A-pillar lower side outer panel 13' are connected by a second welding 31', and the A-pillar lower side outer panel 13' is thin (0.7 mm). Easy to weld, affecting the joint strength, and at the same time, it is easy to cause the chemical reaction of the spot weld sealant to produce toxic gas when welding, which affects the health of the operator;

3. As shown in Fig. 1c, the side wall side rail is provided with an A-pillar upper reinforcing plate 14' fixed between the side wall upper side beam outer panel 15' and the side wall upper side beam inner panel 16' to form a cavity structure, the cavity The structure only penetrates to the left side of the upper end of the B-pillar 18', and the side-side upper side beam has only the side-side upper side beam outer plate 15' and the side-side upper side beam inner plate 16', resulting in poor continuity of the side-side upper side beam cavity, and no side collision due to side collision. The frontal collision has a buffered energy absorption area, and only the A-pillar, B-pillar 18', side-side upper side beam, sill and door anti-collision bar are stressed. The poor continuity of the side-side upper side beam cavity will cause the side column to easily hit the large body. Deformation and failure;

4. As shown in Fig. 1c, the right side of the side rail outer side panel 15' and the C-pillar upper joint are plate lap joint structures, and the rear wheel cover support plate 22' and the C-pillar upper reinforcing plate 23' are misaligned 17', the cavity Poor integrity, low joint stiffness;

5. As shown in FIG. 1d, the rear wheel cover upper reinforcing plate 24' extends to the rear wheel cover flange stop, and the rear wheel cover upper reinforcing plate 24' and the rear wheel cover support plate 22' are provided with overlapping portions 26', overlapping The portion 26' has a small amount of overlap, and the force transmission path is not smooth. When subjected to severe working conditions, the lower end of the threshold is denatured or stress concentration occurs;

6. As shown in FIG. 1e, the sill outer reinforcing plate 27' and the rear wheel cover outer plate 28' have a disconnecting portion 25', the cavity consistency is poor, the force transmission path is not smooth, and the C-pillar lower joint rigidity is low, affecting the whole vehicle. Stiffness and modality.

Summary of the invention

The present invention has been made to solve the deficiencies in the prior art, and an object of the present invention is to provide a solution to the problem of weak connection between the up-bending beam and the longitudinal beam, and to realize that the front column colliding beam does not participate in collision and enhance the front column collision. Performance, while adding rigidity to the headlight mounting point, improves body safety for the body-in-white frame assembly.

A body-in-white frame assembly of the present invention includes a body frame body, a front end frame and two side frame frames, the front end frame being fixed to a front side of the body frame body, and the two side frame frames are respectively fixed to the body body The left and right sides of the frame body are fixedly connected to the front ends of the two side frame frames respectively, and the front end frame comprises two upper curved beam column reinforcing plates, and the two upper curved beam columns are reinforced. The plates are respectively extended from top to bottom and fixed on the rear side of the curved beam column on the corresponding body.

A body-in-white frame assembly of the present invention may also be:

The left and right side edges of the two upper curved beam upright reinforcing plates and the corresponding left and right side edges of the upper curved beam standing column are respectively extended from top to bottom, and the inner sides of the two upper curved beam upright reinforcing plates are respectively corresponding to the corresponding a cavity closed from top to bottom is arranged between the inner side of the curved beam column, and the two upper curved beam column reinforcing plates and the corresponding lower end of the upright beam column respectively correspond to the corresponding front body longitudinal beam The front and rear ends are fixed.

A front wheel cover outer plate reinforcing plate is disposed at the rear left and right ends of the front side frame, and the two side frame frames each include an A-pillar lower reinforcing plate, and the front wheel cover outer plate reinforcing plate is provided with a rear upper end a cover hinge mounting bracket, the inner rear end of the hood hinge mounting bracket is fixedly connected with the corresponding lower A-pillar reinforcing plate end by two-layer plate welding, and the A-pillar lower side wall is provided on the outer side of the A-pillar lower reinforcing plate An outer panel, the outer rear end of the hair hood hinge mounting bracket is fixed to a corresponding A-pillar lower-side outer panel end, and the front wheel cover outer panel reinforcing panel rear end and the corresponding A-pillar lower side outer panel respectively The upper middle end is fixedly connected.

The outer rear end of the hood hinge mounting bracket and the corresponding outer side end of the lower side of the A-pillar are respectively fixed by three-layer plate welding, and the upper side of the rear end of the hood hinge mounting bracket and the corresponding A-pillar respectively The front end of the lower side outer panel is fixed by three-layer plate welding, and the rear end of the front wheel outer panel reinforcing plate is respectively fixedly connected with the upper middle end of the corresponding lower side outer panel of the A-pillar.

The A-pillar upper reinforcing plate is provided with an A-pillar upper reinforcing plate, the body frame body further includes an upper side beam, and the A-pillar upper reinforcing plate is provided with an A-pillar reinforcing extending plate on the A-pillar. The reinforcing extension plates are respectively fixed on the upper side sill by the corresponding side sill upper side sill inner panel and the side sill upper side sill outer panel, and the A-pillar upper reinforced extension slab is respectively fixed on the corresponding side sill upper side sill inner panel and In the middle of the outer side of the side wall of the side sill, the reinforcing slab on the A-pillar is respectively provided with the front side of the inner side panel of the side sill and the inner side of the side sill of the side sill The closed cavity.

The A-pillar reinforcing extension plates respectively include a first extension plate and a second extension plate, the body frame body including a B-pillar, a C-pillar and a D-pillar, respectively, the first extension plate respectively from the corresponding top of the B-pillar a rear side extending to a corresponding front side of the C-pillar top end, the second extension plate extending from a rear side of the corresponding top end of the C-pillar to a corresponding lower end of the D-pillar, the first extension plate and the a second extension plate extending and fixed between the corresponding side wall upper side beam inner plate and the side wall upper side beam outer plate, wherein the first extension plate and the second extension plate respectively correspond to the side wall of the side wall respectively A cavity closed from front to back is disposed between the inner side of the inner panel of the beam and the inner side of the outer side panel of the side wall of the side wall.

a rear wheel cover support plate is disposed on a lower side of the rear end of the first extension plate, and the rear wheel cover support plate is fixed by the rear wheel cover upper side inner plate and the rear wheel cover upper side outer plate On the C-pillar, the rear wheel cover support plates are respectively extended and fixed between the corresponding rear wheel cover upper side inner plate and the rear wheel cover upper side outer plate, and the rear wheel cover support plate and the corresponding rear wheel A cavity closed from top to bottom is enclosed between the upper side inner panel of the cover and the upper outer side of the rear wheel cover.

a rear wheel cover is disposed at a lower end of the rear wheel cover support plate, the rear wheel cover includes a rear wheel cover outer plate, and the rear wheel cover support plate extends downward from a corresponding upper end of the C-pillar to the corresponding The outer side of the rear wheel cover is provided with a fixing bracket for the rear shock absorber installation, and the body frame body further includes a rear beam, and the bottom of the fixing bracket is fixed to the rear beam.

The rear wheel cover support plate is provided with a rear wheel cover upper reinforcing plate, and the rear wheel cover upper reinforcing plate end overlaps with the corresponding inner side of the rear wheel cover support plate, and the fixed bracket is disposed correspondingly Under the reinforcement plate on the wheel cover.

A sill outer plate and a reinforcing plate are respectively disposed at a front lower portion of the rear wheel cover support plate, and the sill outer plates are respectively connected to the corresponding rear wheel cover outer plates through the corresponding reinforcing plates.

A body-in-white frame assembly of the present invention includes a body frame body, a front end frame and two side frame frames, the front end frame being fixed to a front side of the body frame body, and the two side frame frames are respectively fixed to the body body The left and right sides of the frame body are fixedly connected to the front ends of the two side frame frames respectively, and the front end frame comprises two upper curved beam column reinforcing plates, and the two upper curved beam columns are reinforced. The plates are respectively extended from top to bottom and fixed on the rear side of the curved beam column on the corresponding body. In this way, because the rear side of the upper curved column is provided with an upper curved beam upright reinforcing plate extending from top to bottom, the traditional upper curved beam column opening structure is covered to form a closed structure, which solves the traditional upper curved beam column and The front longitudinal beam connection is weak. When the front column is hit, the opening structure of the traditional upper curved beam column is easily torn by the load, which makes the connection fail. The traditional upper curved beam column is transmitted due to the connection failure during the transmission load. Interruption, other non-structural parts are deformed, the body deformation is large, and the load cannot be effectively transmitted to the front longitudinal beam or other structural parts of the vehicle body, so that the acceleration signal received by the vehicle body is small, and the airbag does not ignite, which seriously affects the safety of passengers. . Therefore, on the rear side of the upper curved beam column, there is a top-down upper curved beam column reinforcing plate covering the traditional upper curved beam column opening, and the upper curved beam column and the upper curved beam column reinforcing plate form a closed. The structure strengthens the joint strength of the upper curved beam. When a frontal collision occurs, the upper curved column receives the load. Because there is sufficient strength, the connection failure will not occur. The load can be effectively transmitted to the front longitudinal beam on the upper curved column. The load is transmitted from the front longitudinal beam to other structural members to ensure that the vehicle body receives sufficient acceleration signals, and the airbag can be effectively ignited to effectively protect passenger safety. Moreover, front headlights are arranged in front of the left and right ends of the front longitudinal beam, because the front headlights are arranged in front of the front longitudinal beam, and the strength of the connection between the front longitudinal beam and the upper curved beam column is strengthened by the upper curved beam reinforcement plate, and the front is greatly increased. The stiffness of the lamp mounting point improves passenger safety while increasing the overall weight reduction of the body-in-white.

DRAWINGS

1 is a schematic structural view of a prior art body-in-white frame assembly.

Figure 1a is a partial enlarged view of Figure 1A'.

Figure 1b is a partial enlarged view of Figure 1 (hidden lower side periphery) B'.

Figure 1c is a partial enlarged view of Figure 1 (hidden lower side periphery) C'.

Figure 1d is a partial enlarged view of Figure 1 (hidden lower side periphery) D'.

Figure 1e is a partial enlarged view of Figure 1 (hidden lower side periphery) E'.

2 is a schematic overall view of the body-in-white frame assembly of the present invention.

3 is a partial enlarged view of the front side (hidden lower side periphery) of the upper curved beam column connecting structure in the body-in-white frame assembly of the present invention.

Figure 4 is a cross-sectional view taken along line F-F of Figure 3;

Figure 5 is a partial enlarged view of the rear side (hidden lower side periphery) of the upper curved beam column connecting structure in the body-in-white frame assembly of the present invention.

Fig. 6 is a partially enlarged view showing the connection structure of the hair hood hinge mounting bracket and the A-pillar lower reinforcing plate in the body-in-white frame assembly of the present invention (hiding the lower side periphery).

Fig. 7 is a partially enlarged view showing the connection structure of the hood hinge mounting bracket and the lower side outer panel of the A-pillar in the body-in-white frame assembly of the present invention.

Figure 8 is a partial enlarged view of the front wheel cover outer panel reinforcing plate and the side wall assembly connecting structure (hiding lower side periphery) in the body-in-white frame assembly of the present invention.

Figure 9 is a partial enlarged view of the side wall upper side beam connecting structure (hiding lower side periphery) in the body-in-white frame assembly of the present invention.

Figure 10 is a cross-sectional view taken along line G-G of Figure 9.

Figure 11 is a cross-sectional view taken along line H-H of Figure 9.

Figure 12 is a partial enlarged view of the overlap portion (hidden lower side periphery) of the rear wheel cover upper reinforcing plate and the rear wheel cover support plate in the body-in-white frame assembly of the present invention.

Figure 13 is a partially enlarged view showing the connection structure (hidden lower side periphery) of the rear wheel cover support plate and the sill outer plate in the body-in-white frame assembly of the present invention.

Figure 14 is a cross-sectional view taken along line I-I of Figure 12;

Figure 15 is a schematic view showing the force transmission path (hidden lower side periphery) of the body-in-white frame assembly of the present invention.

Figure number description

1...Upper curved beam column 2...Upper curved beam column reinforcement plate 3...Front longitudinal beam 4...Front longitudinal beam sealing plate 5...first two-layer plate welding joint 6...first three-layer plate welding joint 7...second two layers Plate type solder joints 8... Front wheel cover outer plate reinforcement plate 9... Hair cover hinge mounting bracket 10...Second three-layer plate solder joint 11...A column lower reinforcement plate 12...A column lower side outer panel 13...Bolt 14...A Column-on reinforcing plate 15...first extension plate 16...second extension plate 17...side wall-mounted upper side beam outer panel 18...side wall-mounted upper side beam inner panel 19...rear wheel cover support panel 20...rear wheel cover upper side inner panel 21 ...rear wheel cover upper side outer panel 22...fixing bracket 23...rear wheel cover upper reinforcing plate 24...overlap 25...threshold outer panel 26...reinforcing plate 27...rear wheel cover outer panel 28...front pillar bump 29...top Pressure 30... side column touch 31...road surface

detailed description

A body-in-white frame assembly of the present invention will now be described in further detail with reference to Figures 2 through 15 of the accompanying drawings.

A body-in-white frame assembly of the present invention, as shown in FIG. 2 to FIG. 5, includes a body frame body, a front end frame and two side wall frames, the front end frame being fixed on the front side of the body frame body, two The side frames are respectively fixed on the left and right sides of the body frame body, and the left and right ends of the front frame are respectively fixedly connected to the front ends of the two side frame frames, and the front frame includes two upper curved beam column reinforcing plates. 2. The two upper curved beam upright reinforcing plates 2 are respectively extended from the top to the bottom and fixed on the rear side of the corresponding body upper curved beam column 1. Specifically, since the rear side of the upper curved beam column 1 is provided with an upper curved beam column reinforcing plate 2 extending from the top to the bottom, the conventional upper curved beam column opening structure is covered to form a closed structure, which solves the conventional problem. The curved beam column and the front longitudinal beam are weakly connected. When the front column is hit, the opening structure of the traditional upper curved beam column is easily torn by the load, which makes the connection invalid. The traditional upper curved beam column is in the process of transmitting load. If the connection fails and the transmission is interrupted, the other non-structural parts are deformed, the deformation of the vehicle body is large, and the load cannot be effectively transmitted to the front longitudinal beam or other structural parts of the vehicle body, so that the acceleration signal received by the vehicle body is small, and the airbag does not ignite. Affect the safety of passengers. Therefore, on the rear side of the upper curved beam column 1, there is a top-down upper curved beam column reinforcing plate 2 covering the traditional upper curved beam column opening, the upper curved beam column 1 and the upper curved beam column reinforcing plate 2 A closed structure is formed to strengthen the joint strength of the upper curved beam column 1. When a frontal collision occurs, the upper curved beam column 1 receives the load, and because there is sufficient strength, the connection failure does not occur, and the load can be on the upper curved beam column 1 Effectively transmitted to the front longitudinal beam 3, the load is transmitted from the front longitudinal beam 3 to other structural members to ensure that the vehicle body receives sufficient acceleration signals, and the airbag can be effectively ignited to effectively protect passenger safety. Moreover, a front headlight is arranged in front of the left and right ends of the front longitudinal beam 3, because the front headlight is arranged in front of the front longitudinal beam 3, and the strength of the front longitudinal beam 3 and the upper curved beam column 1 is strengthened by the upper curved beam column reinforcing plate 2. At the same time, it indirectly increases the rigidity of the headlight installation point, improves passenger safety and improves the overall lightweight level of the body-in-white. The advantage of the prior art is that the problem that the upper curved column 1 and the front longitudinal beam 3 are weakly connected is solved, the front column colliding beam is involved in the load transmission, the front column collision performance is improved, and the passenger safety is improved. It is also possible to fix the front side lower end of the two curved upper beam columns 1 and the front left side of the corresponding front longitudinal beam 3 respectively by two-layer plate welding, and the front side lower ends of the two body upper curved beam columns 1 and the front side of the front longitudinal beam 3 respectively. The right end may be fixed by three first two-layer plate-shaped solder joints 5, and the right side of the lower end of the curved beam column 1 and the upper left end of the front longitudinal beam 3 are fixed by two-layer plate welding, and the lower end of the lower end of the curved beam column 1 on the vehicle body is The upper left end of the front side member 3 can be fixed by two first two-layer plate joints 5 to enhance the welding firmness. The rear side of the upper end of the upper curved beam reinforcing plate 2 and the rear side of the front longitudinal beam 3 can be fixed by three-layer plate welding, and the rear side of the lower curved end of the upper curved column reinforcing plate 2 and the front longitudinal beam sealing plate on the rear side of the front longitudinal beam 3 It can be fixed by two first three-layer plate solder joints 6 to enhance the welding firmness.

The body-in-white frame assembly of the present invention, as shown in FIG. 2 to FIG. 5, may further be based on the technical solutions described above: the left and right edges of the two upper curved beam pillar reinforcing plates 2 respectively And the left and right side edges of the corresponding curved upper beam 1 are extended and fixed from top to bottom, and the inner sides of the two upper curved beam reinforcing plates 2 are respectively disposed between the inner side of the corresponding upper curved column 1 and the inner side of the upper curved column 1 The upper and lower closed cavities, the two upper curved beam upright reinforcing plates 2 and the corresponding lower end of the upper body curved column 1 are respectively fixed to the front and rear ends of the corresponding body front side members 3 respectively. In this way, since the inner sides of the two upper curved beam pillar reinforcing plates 2 and the corresponding inner curved beam column 1 are respectively closed from the top to the bottom, when the front facing column occurs, the cavity space is fully utilized. The load of the front longitudinal beam 3 can be effectively dispersed by the cavity, and the structure of the cavity is air, without any physical structure, the load is transmitted in the cavity without any physical obstruction, accelerating the transmission of the load, effectively avoiding the front column collision The longitudinal beam is concentrated, resulting in failure of the connection between the upper curved column 1 and the front longitudinal beam 3. The acceleration signal received by the vehicle body is small, the airbag does not ignite, affecting passenger safety, further enhancing the performance of the front column collision, effectively dispersing and simultaneously increasing whiteness. The overall body weight level.

A body-in-white frame assembly of the present invention, as shown in FIG. 2 to FIG. 8 , on the basis of the technical solution described above, the front wheel cover 3 is provided with a front wheel cover at the left and right ends. The outer panel reinforcing plate 8 and the two side wrapping frames each comprise an A-pillar lower reinforcing plate 11 , and the rear wheel outer panel reinforcing plate 8 is provided with a hair hood hinge mounting bracket 9 at the upper rear end, and the hair hood hinge is installed The inner rear end of the bracket 9 and the corresponding upper end of the A-pillar lower reinforcing plate 11 are fixedly connected by two-layer plate welding, and the outer side of the A-pillar lower reinforcing plate 11 is provided with an A-pillar lower side outer panel 12, the hair cover The outer rear end of the hinge mounting bracket 9 is fixed to the upper end of the corresponding A-pillar lower side outer panel 12, and the rear end of the front wheel cover outer panel reinforcing plate 8 is respectively fixed with the upper end of the corresponding A-pillar lower side outer panel 12. connection. Thus, the right upper end of the front wheel cover outer panel reinforcing plate 8 is provided with a hood hinge mounting bracket 9, firstly through the inner side rear end of the hood hinge mounting bracket 9 and the upper end of the corresponding A-pillar lower reinforcing plate 11 respectively through two layers of plate welding Connected, and then fixedly connected to the inner side of the inner side of the lower side of the A-pillar by the outer cover of the A-pillar hinge mounting bracket 9 to avoid the conventional front wheel cover outer plate reinforcing plate directly passing through the second welding and the A-pillar lower side outer plate fixing Connection, the traditional side panel outer panel is thin, the thickness is only 0.7, the side panel outer panel includes the A-pillar lower side outer panel, and the thickness of the lower side of the A-pillar is only 0.7mm, which is easy to weld and affect the connection strength. At the same time, the use of two-welded welding is easy to cause the chemical reaction of the spot welding sealant to produce toxic gas, which affects the health of the operator. Therefore, without changing the BOP, firstly, the inner rear end of the hood hinge mounting bracket 9 is respectively fixedly connected with the upper end of the corresponding A-pillar lower reinforcing plate 11 through two-layer plate welding, and the welding strength is ensured, and the use is effectively avoided. After the second welding and the spot welding sealant react, the toxic gas is generated to affect the health of the operator, and then the outer rear end of the hood hinge mounting bracket 9 is fixed to the upper side of the corresponding A-pillar lower side outer panel 12, and finally the front wheel The rear ends of the cover outer panel reinforcing plates 8 are respectively fixedly connected to the upper ends of the corresponding A-pillar lower side outer panels 12. The inner rear end of the hood hinge mounting bracket 9 can also be fixedly connected to the upper end of the corresponding A-pillar lower reinforcing plate 11 through two second two-layer plate-shaped solder joints 7, thereby further improving the connection strength. According to the foregoing technical solution, a further preferred technical solution is that the outer rear end of the hood hinge mounting bracket 9 and the corresponding upper end of the lower side outer panel 12 of the A-pillar are respectively fixed by three-layer plate welding. The upper end of the rear end of the cover hinge mounting bracket 9 and the corresponding front end of the lower side outer panel 12 of the A-pillar are respectively fixed by three-layer plate welding, and the rear end of the front wheel cover outer plate reinforcing plate 8 and the corresponding end respectively The upper end of the lower side outer panel 12 of the A-pillar is fixedly connected by bolts 13. In this way, firstly, the inner rear end of the hood hinge mounting bracket 9 is respectively fixedly connected with the upper end of the corresponding A-pillar lower reinforcing plate 11 through two layers of plate welding, and then the outer rear end of the hood hinge mounting bracket 9 is corresponding to the corresponding A. The upper ends of the lower side outer panel 12 are respectively fixed by three-layer plate welding, and finally the rear ends of the front wheel outer panel reinforcing plates 8 are respectively fixedly connected to the upper ends of the corresponding lower side outer panels 12 of the A-pillars by bolts 13. It avoids the traditional one-piece front wheel cover outer plate reinforcement plate and the A-pillar lower side outer plate through two welding welding. The traditional side wall outer plate is thin and the thickness is only 0.7mm, and the side outer plate includes the A-pillar lower side wall. The thickness of the outer plate and the outer side of the A-pillar is also thin, and it is only 0.7mm thick. The second welding connection is easy to be welded. Therefore, the welding strength is strengthened by the plate welding, and the chemical reaction of the spot welding sealant is also avoided. Produces toxic gases, affects the health of operators and improves safety during welding. The outer rear end of the hood hinge mounting bracket 9 and the corresponding upper end of the lower side outer panel 12 of the A-pillar are respectively fixedly connected by two second three-layer slab joints 10, and the outer upper ends of the hood hinge mounting brackets 9 are respectively The front side of the upper end of the lower side outer panel 12 of the corresponding A-pillar is fixedly connected by a second three-layer plate-shaped solder joint 10, and four bolts 13 may be used. The rear lower end of the front wheel cover outer plate reinforcing plate 8 is fixed by two bolts 13. At the upper end of the lower side outer panel 12 of the A-pillar, the front upper end of the front wheel shroud outer panel reinforcing plate 8 is fixed to the front upper end of the lower side outer panel 12 of the A-pillar by two bolts 13.

The body-in-white frame assembly of the present invention, as shown in FIG. 2 to FIG. 14 , can also be based on the technical solution described above: the upper end of the A-pillar under-reinforcing plate 11 is provided with an A-pillar reinforcement. The plate body 14 further includes an upper side beam, and the A-pillar upper reinforcing plate 14 is provided with an A-pillar upper reinforcing extending plate, and the A-pillar reinforcing extending plate passes through the corresponding side surrounding upper side beam inner plate respectively. 18 and a side wall upper side outer panel 17 fixed to the upper side rail, wherein the A-pillar upper reinforcing extension plate is respectively fixed to the corresponding side wall upper side beam inner panel 18 and the side wall upper side beam outer panel 17 In the middle, the A-pillar reinforcing extension plate is respectively provided with a cavity closed from the front to the rear between the inner side of the corresponding side wall inner side panel 18 and the inner side of the side wall upper side outer panel 17. Thus, the reinforcing plate on the A-pillar on the side wall of the conventional side wall only penetrates the B-pillar, and the continuity of the side-side upper beam cavity is poor. Therefore, a reinforcing column on the A-pillar is arranged on the rear side of the reinforcing plate 14 on the A-pillar, and the front and rear sides of the reinforcing plate are reinforced on the front side of the corresponding side wall by the A-pillar and the side-side outer plate 17 of the side beam. A cavity closed from front to back is arranged between the inner side, and the cavity space is fully utilized, and the structure of the cavity is air, without any physical structure, and the load is transmitted in the cavity without any physical obstruction, accelerating the transmission of the load. The utility model can effectively avoid the stress concentration of the longitudinal beam when the front column is touched, and the load on the side wall side rail can be effectively dispersed to other structural parts of the vehicle body through the cavity, the cavity can effectively disperse the load of the side beam, and effectively avoid the side column collision. The side beam generates force concentration, improves the collision safety performance of the white car body, avoids large body deformation and failure problems in the side column collision situation, improves the light body level of the white body and can transmit and disperse the side collision energy, and enhance the side column collision. Performance and top pressure performance. A further preferred technical solution based on the foregoing technical solutions is that the A-pillar reinforcing extension plates respectively comprise a first extension plate 15 and a second extension plate 16, the body frame body comprising a B-pillar, a C-pillar and a D-pillar The first extension plate 15 extends from the rear side of the corresponding B-pillar top end to the corresponding front side of the C-pillar top end, and the second extension plate 16 respectively extends from the rear side of the corresponding C-pillar top end. Up to the lower end of the corresponding D-pillar, the first extension plate 15 and the second extension plate 16 are extended and fixed between the corresponding side wall upper side beam inner panel 18 and the 15 side side upper side beam outer panel 17 The first extension plate 15 and the second extension plate 16 are respectively disposed between the inner side of the corresponding side wall inner side panel 18 and the inner side of the 15 side side upper side outer panel 17 The closed cavity. In this way, when the column is hit on the side, the continuity of the side wall of the side wall from the upper end of the A-pillar to the upper end of the D-pillar is effectively ensured, and the load of the side-side side beam is effectively transmitted to the B-pillar and C by the continuity of the cavity. On the column and the D-pillar, the force is concentrated on the side sill of the side wall when the side column is touched. The traditional A-pillar reinforced plate structure only penetrates the B-pillar, and the side-side upper beam cavity has poor continuity, resulting in no side impact. The frontal collision has a buffered energy absorption area, and only the A-pillar, B-pillar, side-side upper side beam, sill and door anti-collision bar are stressed. The poor continuity of the side-side upper side beam cavity will cause the side column to be easily deformed and large body deformation. Invalid issues. Therefore, the complete and continuous side wall cavity structure can effectively transmit and disperse the side collision energy while improving the light weight level of the body-in-white, improve the side column collision performance and the compression resistance performance, and improve the light body level of the body-in-white. Effectively transmits and disperses side impact energy, improving side column impact performance and compression resistance. A further preferred technical solution based on the foregoing technical solution is that the rear side of the rear end of the first extension plate 15 is provided with a rear wheel cover support plate 19, and the rear wheel cover support plate 19 passes through the rear wheel cover. The inner panel 20 and the rear wheel cover upper side outer panel 21 are fixed on the corresponding C-pillars, and the rear wheel cover support panels 19 are respectively extended and fixed to the corresponding rear wheel cover upper side inner panel 20 and the rear wheel cover. Between the upper side outer panel 21, the rear wheel cover support plate 19 and the corresponding rear wheel cover upper side inner panel 20 and the rear wheel cover upper side outer panel 21 are arranged from the top to the top Lower closed cavity. Thus, a cavity closed from top to bottom is surrounded by the rear wheel cover support plate 19 and the corresponding rear wheel cover upper side inner panel 20 and the rear wheel cover upper side outer panel 21, and The wheel cover support plate 19 runs through the entire C-pillar, ensuring the continuity of the entire C-pillar, and the side load is effectively transmitted through the cavity, because there is no physical resistance in the cavity structure, and when the load occurs, the load can pass through the cavity structure quickly. Passing, improving the light weight of the body-in-white while effectively transmitting and dispersing the side rear wheel cover collision load, and improving the column collision performance at the side rear wheel cover. A further preferred technical solution based on the foregoing technical solution is that the rear wheel cover support plate 19 is provided with a rear wheel cover at a lower end thereof, and the rear wheel cover includes a rear wheel cover outer plate 27, and the rear wheel cover support plate. 19 extending downward from the corresponding upper end of the C-pillar to the outer side of the corresponding rear wheel cover, and the rear wheel cover outer plate 27 is provided with a fixing bracket 22 for rear shock absorber mounting, the body frame body A rear girders are also included, and the bottom of the fixing bracket 22 is fixed to the rear girders. Thus, the rear wheel cover support plate 19 extends downward from the upper end of the corresponding C-pillar to the outer side of the corresponding rear wheel cover outer plate 27, respectively, so as to avoid the displacement of the conventional rear wheel cover support plate and the reinforcing plate on the C-pillar, and the cavity generated. Poor overall performance and low joint rigidity. Therefore, the integrated rear wheel cover support plate 19 reinforces the continuity of the C-pillar, ensuring that the rear wheel cover support plate 19 continuously extends from the upper end of the C-pillar to the outer side of the rear wheel cover outer plate 27, and the side load is effectively transmitted through the cavity. On the rear wheel cover, the force transmission path is ensured to be smoother. The bottom of the fixed bracket 22 installed by the rear shock absorber can be fixedly connected with the rear beam by the second welding, and the stability of the fixing bracket 22 and the rear beam connection is strengthened. Two fixing brackets 22 for rear shock absorber mounting are respectively disposed on the inner side of the rear wheel cover, and two fixing brackets 22 for rear shock absorber mounting are symmetrically mounted. A further preferred technical solution on the basis of the foregoing technical solutions is that the rear wheel cover support plate 19 is provided with a rear wheel cover upper reinforcing plate 23, and the rear wheel cover upper reinforcing plate 23 upper end and the corresponding rear portion The inside of the wheel house support plate 19 is overlapped, and the fixing bracket 22 is disposed below the corresponding rear wheel cover upper reinforcing plate 23. In this way, the height of the reinforcing plate 23 on the rear wheel cover is increased, and the overlapping amount 24 of the reinforcing plate 23 and the rear wheel cover supporting plate 19 on the rear wheel cover is increased, and the overlapping height can be 160 mm. The reinforcing plate on the conventional rear wheel cover only extends to the rear. The wheel cover is stopped at the flange, and the rear plate cover has less overlap with the rear wheel cover support plate cavity, and the force transmission road force is not normal. When the severe working condition is encountered, the threshold load cannot be effectively transmitted, and the lower end of the threshold is easily deformed or Stress concentration occurs. Therefore, the amount of overlap 24 between the reinforcing plate 23 and the rear wheel cover supporting plate 19 on the rear wheel cover is increased, and the force transmission path is generally effective to reduce stress concentration and improve the jog rigidity of the rear shock absorber mounting bracket. The rear wheel cover support plate extends from the upper end of the C-pillar to the rear wheel cover outer plate 27 and the corresponding rear wheel cover support plate 19 and the inner rear wheel cover upper reinforcing plate 23 and the lower rear shock-absorbing mounting fixing bracket 22 Correspondingly, the bottom of the fixing bracket 22 and the rear girders are fixed, thereby ensuring the continuity and integrity of the structure of the rear side wall of the vehicle body. A further preferred technical solution based on the foregoing technical solution is that the front wheel cover support plate 19 is provided with a sill outer plate 25 and a reinforcing plate 26, and the sill outer plate 25 respectively passes the corresponding The strong plate 26 is coupled to the corresponding rear wheel house outer panel 27. In this way, the sill outer panel 25 is respectively connected to the corresponding rear wheel cover outer panel 27 through the reinforcing plate 26, which solves the problem that the conventional sill outer panel and the rear wheel hood outer panel are disconnected, the cavity consistency is poor, and the transmission force is not smooth. . Therefore, the joint rigidity of the C-pillar lower joint to the front and rear body is strengthened, and the first-order torque mode and the first-order bending mode of the body-in-white are improved, thereby improving the side column collision performance.

As shown in Fig. 15, after the complement of the body beam structure and the reasonable division and reinforcement of the joint structure, the body-in-white structure forms a complete cage structure, the welding process is safer and healthier, and the upper and lower body bodies are connected more closely, and the force transmission path is More, it can more effectively transmit and disperse the impact force and road surface excitation during collision or normal driving, and improve the performance of the column in the direction of the white body front column and the side column in the direction of 30; Compressive performance, top compressive strength analysis When the rigid wall displacement is 50mm, the resistive top load is increased from about 33KN to about 43KN; the torsional stiffness of the white body is increased by 1780Nm/deg, the bending stiffness is increased by 1051N/mm; The bending mode is increased by 1.43 Hz, the first-order torsional mode is increased by 1.93 Hz, and the NVH performance is improved; the body-in-white light weight coefficient is increased from 5.11 to 4.75 and the jog of the rear shock absorber mounting bracket is increased.

The above description is only for the specific embodiments of the present invention, but it should not be taken as the scope of protection of the present invention. Any equivalent changes or modifications or equal enlargements or reductions according to the design spirit of the present invention should be It is considered to fall within the scope of protection of the present invention.

Claims

A body-in-white frame assembly, comprising: a body frame body, a front end frame and two side wall frames, wherein the front end frame is fixed to a front side of the body frame body, and the two side frame frames are respectively fixed at the The left and right sides of the front frame are fixedly connected to the front ends of the two side frames, and the front frame includes two upper curved beam reinforcing plates (2), two of the upper The curved beam column reinforcing plates (2) are respectively extended from the top to the bottom and fixed on the rear side of the corresponding body upper curved beam column (1).
The body-in-white frame assembly according to claim 1, wherein the left and right side edges of the two upper curved beam upright reinforcing plates (2) and the corresponding upper curved beam columns (1) are respectively left and right. The side edges are extended from top to bottom, and the inner side of the two upper curved beam column reinforcing plates (2) and the corresponding inner side of the upper curved beam column (1) are respectively surrounded by a cavity closed from top to bottom. The lower ends of the two upper curved beam upright reinforcing plates (2) and the corresponding upper curved beam uprights (1) are respectively fixed to the front and rear ends of the corresponding front side longitudinal beams (3).
A body-in-white frame assembly according to claim 1, wherein a front wheel cover outer panel reinforcing plate (8) is disposed at the rear left and right ends of the front side member (3), and the two sides are The surrounding frames each include an A-pillar lower reinforcing plate (11), and the rear upper end of the front wheel cover outer plate reinforcing plate (8) is provided with a hair hood hinge mounting bracket (9), and the hair hood hinge mounting bracket (9) inner side The rear end and the corresponding upper end of the A-pillar lower reinforcing plate (11) are fixedly connected by two-layer plate welding, and the A-pillar lower reinforcing plate (11) is provided with an A-pillar lower side outer plate (12). The outer rear end of the cover hinge mounting bracket (9) is fixed to the upper end of the corresponding A-pillar lower side outer panel (12), and the rear end of the front wheel outer panel reinforcing plate (8) and the corresponding A-pillar respectively The upper end of the lower side outer panel (12) is fixedly connected.
A body-in-white frame assembly according to claim 3, wherein the outer rear end of the hood hinge mounting bracket (9) and the upper end of the corresponding lower side outer panel (12) of the A-pillar are respectively passed The three-layer plate type welding is fixed, and the upper end of the rear end of the hood hinge mounting bracket (9) is respectively fixed with the corresponding upper end of the lower side outer panel (12) of the A-pillar by three-layer plate welding, the front wheel The rear ends of the outer cover reinforcing plates (8) are respectively fixedly connected to the upper ends of the corresponding lower outer side plates (12) of the A-pillars by bolts (13).
A body-in-white frame assembly according to claim 3, characterized in that: the upper end of the A-pillar lower reinforcing plate (11) is provided with an A-pillar upper reinforcing plate (14), and the body frame body further comprises an upper side a beam, the A-pillar upper reinforcing plate (14) is provided with an A-pillar reinforcing extending plate, and the A-pillar reinforcing extending plate passes through the corresponding side wall upper side beam inner plate (18) and the side surrounding upper side beam respectively. A plate (17) is fixed on the upper side rail, and the A-pillar reinforcing extending plate is respectively fixed in the middle of the corresponding side wall upper side beam inner plate (18) and the side wall upper side beam outer plate (17) The A-pillar reinforcing extension plate is respectively provided with a front-to-back closed cavity between the inner side of the corresponding side wall inner side panel (18) and the inner side of the side wall side outer beam (17). body.
A body-in-white frame assembly according to claim 5, wherein said A-pillar reinforcing extension plates respectively comprise a first extension plate (15) and a second extension plate (16), said body frame body A B-pillar, a C-pillar, and a D-pillar are included, and the first extension plate (15) respectively extends from a rear side of the corresponding B-pillar top end to a corresponding front side of the C-pillar top end, and the second extension plate (16) Extending from the rear side of the corresponding top end of the C-pillar to the lower end of the corresponding D-pillar, respectively, the first extension plate (15) and the second extension plate (16) are extended and fixed to the corresponding side wall An upper side inner panel (18) and the side wall upper side outer panel (17), the first extension board (15) and the second extension board (16) respectively corresponding to the side wall side rails A cavity closed from front to back is disposed between the inner side of the inner panel (18) and the inner side of the side wall upper side panel (17).
A body-in-white frame assembly according to claim 6, wherein a rear wheel cover support plate (19) is disposed on a lower side of the rear end of the first extension plate (15), and the rear wheel cover supports The plate (19) is fixed on the corresponding C-pillar through the rear wheel cover upper side inner plate (20) and the rear wheel cover upper side outer plate (21), and the rear wheel cover support plate (19) respectively extends Fixed in the middle of the corresponding rear wheel cover upper side inner panel (20) and the rear wheel cover upper side outer panel (21), the rear wheel cover support board (19) and the corresponding rear wheel cover upper side wall A cavity closed from top to bottom is enclosed between the inner panel (20) and the upper side outer panel (21) of the rear wheel housing.
A body-in-white frame assembly according to claim 7, wherein said rear wheel cover support plate (19) is provided with a rear wheel cover at a lower end thereof, and said rear wheel cover comprises a rear wheel cover outer plate (27). The rear wheel cover support plate (19) extends downward from the corresponding upper end of the C-pillar to the outer side of the corresponding rear wheel cover, and the rear wheel cover outer plate (27) is provided below for the rear reduction The shock mount-mounted fixing bracket (22) further includes a rear beam, and the bottom of the fixing bracket (22) is fixed to the rear beam.
A body-in-white frame assembly according to claim 8, wherein the rear wheel cover support plate (19) is provided with a rear wheel cover upper reinforcing plate (23) on the inner side thereof, and the rear wheel cover is reinforced The upper end of the plate (23) overlaps with the inner side of the corresponding rear wheel cover support plate (19), and the fixed bracket (22) is disposed below the corresponding rear wheel cover upper reinforcing plate (23).
A body-in-white frame assembly according to claim 9, wherein the front wheel cover support plate (19) is provided with a sill outer plate (25) and a reinforcing plate (26) in front and lower. The sill outer plates (25) are respectively connected to the corresponding rear wheel cover outer plates (27) through the corresponding reinforcing plates (26).