CN218751017U - Threshold stiffening beam and vehicle - Google Patents

Abstract

The utility model discloses a threshold stiffening beam and vehicle, the threshold stiffening beam includes: the reinforcing beam comprises a reinforcing beam body, wherein one end of the reinforcing beam body is provided with a first mounting hole, the other end of the reinforcing beam body is provided with a boss relatively, the boss is provided with a second mounting hole, and the first mounting hole and the second mounting hole are used for being connected with a threshold beam and a side wall assembly. So, be provided with first mounting hole and second mounting hole through the relative both ends at the threshold stiffening beam, for providing a plurality of spiro union installation fixed points between threshold stiffening beam and side wall assembly and the threshold roof beam, can be with threshold stiffening beam fixed connection reliably between threshold roof beam and side wall assembly through first mounting hole and second mounting hole, can show the rigidity and the intensity that promote side wall threshold beam structure, improve automobile body both sides buffering energy-absorbing effect when the side is bumped, block its high impact energy, thereby can effectively promote the anticollision performance of vehicle.

Description

Threshold stiffening beam and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a threshold stiffening beam and vehicle are related to.

Background

The sill beam structure plays a vital role in side impact of the automobile, and the two sides of the automobile body are not provided with buffering and energy absorbing parts like a front cabin and a rear cabin during side impact, so that a sill reinforcing beam structure is usually adopted to block high impact energy of the sill reinforcing beam structure. The side wall threshold stiffening beam structure is arranged in a threshold beam cavity formed by a side wall stiffening plate of a side wall assembly and a threshold beam of a vehicle body lower part assembly, and mainly comprises a side wall outer plate sub-assembly, a side wall stiffening plate sub-assembly, a threshold stiffening beam, a side wall inner plate front section assembly, a side wall inner plate rear section assembly and a vehicle body lower part assembly.

In the related technology, most of the threshold reinforcing beams are arranged on the side wall reinforcing plate sub-assembly of the side wall assembly through two bolts, two Y-direction installation fixing points are provided for connecting the threshold reinforcing beams with a vehicle body, the structural number of the fixing points is small, only two Y-direction installation points exist on the side wall assembly side, and the Z-direction is unsupported.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a threshold stiffening beam, the both ends of threshold stiffening beam are equipped with first mounting hole and second mounting hole, provide a plurality of Y to the installation fixed point, make the threshold stiffening beam connect reliably between threshold roof beam and side wall assembly, promote rigidity and intensity.

The utility model also provides a vehicle.

According to the utility model discloses threshold stiffening beam of first aspect embodiment, the threshold stiffening beam includes: the reinforcing beam comprises a reinforcing beam body, wherein one end of the reinforcing beam body is provided with a first mounting hole, the other end of the reinforcing beam body is provided with a boss relatively, the boss is provided with a second mounting hole, and the first mounting hole and the second mounting hole are used for being connected with a threshold beam and a side wall assembly.

According to the utility model discloses threshold stiffening beam, be provided with first mounting hole and second mounting hole through the relative both ends at the threshold stiffening beam, for providing a plurality of spiro union installation fixed points between threshold stiffening beam and side wall assembly and the threshold roof beam, can be with threshold stiffening beam fixed connection reliably between threshold roof beam and side wall assembly through first mounting hole and second mounting hole, can show the rigidity and the intensity that promote side wall threshold beam structure, improve automobile body both sides buffering energy-absorbing effect when the side impact, block its high impact energy, thereby can effectively promote the anticollision performance of vehicle.

According to some embodiments of the utility model, the bellying follows the length direction extension of stiffening beam body sets up just the bellying with the other end wall of stiffening beam body is formed with the step.

According to some embodiments of the invention, the first mounting hole and the second mounting hole are distributed in a staggered manner in a length direction and/or a height direction of the reinforcing beam body.

According to the utility model discloses a some embodiments, the stiffening beam body is provided with the mounting panel at length direction's both ends, the mounting panel is provided with first mounting hole, be provided with the turn-ups on the mounting panel just the turn-ups orientation the stiffening beam body inboard setting of buckling.

According to some embodiments of the utility model, the stiffening beam body is provided with the die cavity, be provided with at least one strengthening rib in the die cavity, the strengthening rib connect in the ascending both sides chamber wall of direction of height of die cavity.

According to some embodiments of the present invention, the stiffening beam body is provided with a plurality of openings, a plurality of the openings are arranged at intervals on the stiffening beam body.

According to the utility model discloses vehicle of second aspect embodiment includes: a side wall assembly; the vehicle body bottom plate assembly is fixedly connected with the side wall assembly; the threshold reinforcing beam is connected between the side wall assembly and the vehicle body bottom plate assembly.

According to some embodiments of the present invention, the underbody assembly comprises: threshold roof beam and threshold roof beam reinforcing plate, the threshold roof beam with the side wall assembly is connected, threshold roof beam reinforcing plate set up in the threshold roof beam, in the direction of height, threshold roof beam reinforcing plate with the bellying sets up relatively.

According to some embodiments of the utility model, the side wall assembly is provided with the third mounting hole, the underbody assembly is provided with the fourth mounting hole, first mounting hole with the third mounting hole sets up just relatively the second mounting hole with the fourth mounting hole sets up relatively or first mounting hole with the fourth mounting hole sets up just relatively the second mounting hole with the third mounting hole sets up relatively.

According to some embodiments of the utility model, the side wall assembly orientation one side of threshold stiffening beam is provided with first cavity, the underbody assembly orientation one side of threshold stiffening beam is provided with first cavity, the side wall assembly with underbody assembly fixed connection just first cavity with the formation closed cavity is connected to the second cavity, so that be used for the parcel the threshold stiffening beam.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an installation of a sill reinforcement beam according to an embodiment of the present invention;

fig. 2 is an exploded view of the installation of a sill reinforcement beam according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A schematic sectional view A-A of FIG. 1;

FIG. 4 is a schematic sectional view B-B of FIG. 1;

FIG. 5 is a schematic sectional view C-C of FIG. 1;

FIG. 6 is a schematic cross-sectional view D-D of FIG. 1;

FIG. 7 is a schematic cross-sectional view E-E of FIG. 1;

fig. 8 is a perspective view of a sill reinforcement beam according to a first embodiment of the present invention;

fig. 9 is a sectional view of a rocker reinforcement beam according to a second embodiment of the present invention;

fig. 10 is a first schematic view of the installation of a sill reinforcement beam according to an embodiment of the present invention;

fig. 11 is a second schematic view of the installation of the sill reinforcement beam according to the embodiment of the present invention;

fig. 12 is a third schematic view of the installation of the sill reinforcement beam according to the embodiment of the present invention;

fig. 13 is a fourth schematic view of the installation of the sill reinforcement beam according to the embodiment of the present invention;

fig. 14 is an enlarged schematic view of fig. 1.

Reference numerals:

100. a threshold stiffening beam; 10. a stiffening beam body; 11. a first mounting hole; 12. a boss portion; 13. a second mounting hole; 14. a step; 15. mounting a plate; 16. flanging; 17. a cavity; 18. reinforcing ribs; 19. opening a hole;

200. a side wall assembly; 210. a first cavity; 220. the side plate reinforcing plate sub-assembly; 230. a side wall outer plate sub-assembly; 240. a side wall inner plate sub-assembly; 250. mounting a bracket;

300. a vehicle underbody assembly; 310. a second cavity; 320. closing the chamber; 330. a threshold beam; 340. sill beam gusset.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A rocker reinforcement beam 100 according to an embodiment of the present invention will be described below with reference to fig. 1 to 14, and the present invention also provides a vehicle having the above rocker reinforcement beam 100.

As shown in fig. 1 to 9 and 14 in combination, the sill reinforcement 100 includes: the reinforcing beam comprises a reinforcing beam body 10, wherein one end of the reinforcing beam body 10 is provided with a first mounting hole 11, the other end of the reinforcing beam body is oppositely provided with a protruding part 12, the protruding part 12 is provided with a second mounting hole 13, and the first mounting hole 11 and the second mounting hole 13 are used for being connected with a threshold beam 330 and a side wall assembly 200.

That is, the first mounting hole 11 is formed at one of the opposite ends of the reinforcing beam body 10, and the reinforcing beam body 10 can be fixed to the threshold beam 330 and the side wall assembly 200 by fastening the first mounting hole 11 with a fastener. And, the other end is equipped with bellying 12, under the prerequisite of automobile body lightweight, has increased the cross-sectional dimension of threshold stiffening beam 100, can improve energy-absorbing shock-absorbing capacity, effectively reduces the clearance between threshold stiffening beam 100 and threshold roof beam 330 simultaneously.

Moreover, the second mounting hole 13 is arranged on the protruding portion 12, so that the first mounting hole 11 and the second mounting hole 13 are arranged at two ends of the reinforcing beam body 10, and it can be understood that the mounting fixing point (the first mounting hole 11 or the second mounting hole 13) is arranged at one end of the reinforcing beam body 10 facing the side sill assembly 200, and the mounting fixing point (the second mounting hole 13 or the first mounting hole 11) is arranged at one end of the reinforcing beam body 10 facing the doorsill beam 330, so as to provide a plurality of mounting fixing points for connecting the doorsill reinforcing beam 100 with the vehicle body, so that the doorsill reinforcing beam 100 can be fixedly connected between the doorsill beam 330 and the side sill assembly 200 by using the fasteners penetrating the first mounting hole 11 and the fasteners penetrating the second mounting hole 13, and the rigidity and strength of the side sill beam structure can be remarkably improved, and when the vehicle has a frontal collision and a small offset collision, the bending of the doorsill beam 330 structure after collision can be prevented; in the side collision process, can improve the buffering energy-absorbing effect of automobile body both sides threshold roof beam 330 structure, moreover, to new energy automobile, can avoid threshold roof beam 330 atress back invasion volume too big messenger to arrange in the battery package atress of underbody assembly 300 and lead to taking place the spontaneous combustion problem, play the guard action to the battery package.

The sill stiffening beam 100 is mainly of an aluminum profile structure with a uniform cross section and is manufactured through an aluminum extrusion process.

Therefore, the first mounting holes 11 and the second mounting holes 13 are formed in the two opposite ends of the doorsill reinforcing beam 100, a plurality of bolt connection mounting fixing points are provided between the doorsill reinforcing beam 100 and the side wall assembly 200 and between the doorsill reinforcing beam 330, the doorsill reinforcing beam 100 can be reliably and fixedly connected between the doorsill reinforcing beam 330 and the side wall assembly 200 through the first mounting holes 11 and the second mounting holes 13, the rigidity and the strength of the side wall doorsill beam structure can be remarkably improved, the buffering and energy absorption effects of the two sides of the vehicle body are improved during side collision, the high impact energy of the vehicle body is blocked, and the anti-collision performance of the vehicle can be effectively improved.

Further, the protrusion 12 extends along the longitudinal direction of the reinforcing beam body 10, and the protrusion 12 and the other end wall surface of the reinforcing beam body 10 are formed with a step 14. In this way, the protrusion 12 extends along the length direction of the reinforcement beam body 10, so that the installation area between the protrusion 12 and the side wall assembly 200 or between the protrusion 12 and the threshold beam 330 is larger, that is, the protrusion 12 can be disposed at one end of the reinforcement beam body 10 facing the threshold beam 330, or can be disposed at one end of the reinforcement beam body 10 facing the side wall assembly 200, so as to further reduce the installation gap between the threshold reinforcement beam 100 and the side wall assembly 200 and the threshold beam 330, thereby ensuring the connection tightness between the threshold reinforcement beam 100 and the side wall assembly 200, the threshold beam 330, and effectively improving the strength and rigidity of the side wall threshold beam structure.

The protruding portion 12 and the other end wall surface of the reinforcing beam body 10 are formed with a step 14, so that the protruding portion 12 protruding from the other end of the reinforcing beam body 10 does not generate stress with the other end wall surface of the reinforcing beam body 10, and thus, when two sides of a vehicle body collide, an effective buffering and energy absorbing effect can be achieved, and the structural strength and rigidity of the sill reinforcing beam 100 can be effectively guaranteed while the installation gap is reduced by the protruding portion 12. In addition, the convex part 12 is smoothly connected with the other end wall surface of the reinforcing beam body 10, so that the step 14 surface is smooth, and the stress is effectively prevented from being generated.

In addition, the protruding portion 12 is provided with an adhesive member, the adhesive member is connected between the protruding portion 12 and the side wall assembly 200 or the threshold beam 330, and the adhesive member is disposed at an interval from the second mounting hole 13. In this manner, the protrusion 12 provides a bonding plane for the bonding member, so that the bonding member can be bonded between the sill reinforcement 100 and the side sill assembly 200 or between the sill reinforcement 100 and the sill beam 330, thereby improving the connection strength and the structural rigidity at the position of the sill beam 330.

The utility model discloses an in the embodiment, the piece that bonds can be the structure sticky tape, and the structure sticky tape is the structure sticky tape that uses epoxy self-adhesion type, designs into a square sheet structure, and it has excellent ductility, unique structure adhesion and convenient operability, and the expansion ratio is 10% ~ 150%, can realize high strength, the seamless bridging function in automobile body booth clearance.

Like this, structural adhesive tape is connected together with threshold roof beam 330 after being heated and foamed, can increase threshold stiffening beam 100 (extruded aluminium) and the joint strength and the structural rigidity of threshold roof beam 330 position to can compensate the tolerance of automobile body welding assembly through the expansion ratio of self, reach the optimum and seal, strengthen the effect, can also solve the resonance abnormal sound problem that the cantilever beam structural rigidity of threshold stiffening beam 100 is not enough to lead to simultaneously.

The first mounting holes 11 and the second mounting holes 13 are arranged in a staggered manner in the longitudinal direction and/or the height direction of the reinforcing beam body 10. Thus, the first mounting holes 11 and the second mounting holes 13 are distributed along the length direction of the reinforcing beam body 10 in a staggered manner, the first mounting holes 11 and the second mounting holes 13 are distributed in a staggered manner in the X direction of the vehicle coordinate system, and the first mounting holes 11 and the second mounting holes 13 are distributed in a staggered manner in the height direction of the reinforcing beam body 10, so that the first mounting holes 11 and the second mounting holes 13 are distributed in a staggered manner in the Z direction of the vehicle coordinate system, the natural frequency of the structure of the threshold reinforcing beam 100 can be improved, and the problem of resonance abnormal sound in the door closing process caused by insufficient natural frequency of the cantilever beam structure of the threshold reinforcing beam 100 is solved.

The longitudinal direction of the rocker reinforcement beam 100 coincides with the longitudinal direction of the vehicle (i.e., the front-rear direction), that is, the longitudinal direction in the drawings, the height direction of the rocker reinforcement beam 100 coincides with the height direction of the vehicle, that is, the height direction in the drawings, and the thickness direction of the rocker reinforcement beam 100 coincides with the width direction of the vehicle (i.e., the left-right direction), that is, the width direction in the drawings.

In the embodiment of the utility model, one end of threshold stiffening beam 100 along the width direction of vehicle is provided with two first mounting holes 11, the other end is provided with two second mounting holes 13, four spiro union installation fixed points are provided for side wall threshold beam structure, and four spiro union installation fixed points are in the X direction and Z direction dislocation distribution of vehicle coordinate system, pass four spiro union installation fixed points through the fastener, can be with threshold stiffening beam 100 fixed connection on threshold roof beam 330 and side wall assembly 200, on the one hand, can promote the rigidity and the intensity of side wall threshold beam structure, improve the energy-absorbing effect of automobile body both sides buffering during the side impact, can effectively block its high impact energy; on the other hand, the inherent frequency of the structure of the threshold reinforcing beam 100 is effectively improved, and the problem of resonance abnormal sound in the process of closing the vehicle door is avoided.

Of course, the number of the first mounting holes 11 and the second mounting holes 13 includes, but is not limited to, the above-described embodiments, and may be set and modified appropriately according to actual structures of different vehicles.

Referring to fig. 8, the reinforcing beam body 10 is provided with mounting plates 15 at both ends in the longitudinal direction, the mounting plates 15 are provided with first mounting holes 11, flanges 16 are provided on the mounting plates 15, and the flanges 16 are bent toward the inner side of the reinforcing beam body 10. So, the stiffening beam body 10 extends mounting panel 15 at length direction's both ends to set up first mounting hole 11 on mounting panel 15, make things convenient for the fastener to wear to establish behind the first mounting hole 11 with threshold stiffening beam 100 fix on side wall assembly 200 or on threshold roof beam 330 the utility model discloses an in the embodiment, utilize two M8 bolts with threshold stiffening beam 100 installation fixed to the installing support 250 of side wall assembly 200.

The mounting plate 15 is provided with a flange 16, and the flange 16 is bent toward the inner side of the reinforcing beam body 10. Therefore, the structural strength and the rigidity of the mounting plate 15 can be improved, and reliable guarantee is provided for the fixed connection between the threshold reinforcing beam 100 and the side wall assembly 200 and between the threshold reinforcing beam 330. In this embodiment, the mounting plate 15 is provided with the flanges 16 at both ends in the height direction, so that the fastener can be effectively protected while the structural strength is improved.

Referring to fig. 9, the reinforcing beam body 10 is provided with a cavity 17, at least one reinforcing rib 18 is provided in the cavity 17, and the reinforcing rib 18 is connected to the cavity walls on both sides of the cavity 17 in the height direction. So, the stiffening beam body 10 is provided with the die cavity 17, and the die cavity 17 includes the cope match-type wall, the drag-type wall, left side type wall, right side type wall, make the cope match-type wall, the drag-type wall, left side type wall, right side type wall enclose and establish into the die cavity 17, form a stiffening beam body 10 of uniform cross-section structure, utilize hollow die cavity 17 structure can improve its outer wall to along inside towards the die cavity 17, the resistance intensity of the external force of effect on the outer wall, can realize the support of trampling, and the protection to the side collision, thereby can play effectual buffering energy-absorbing effect. In addition, at least one reinforcing rib 18 is arranged in the cavity 17, so that the at least one reinforcing rib 18 is connected to the cavity walls on the two sides of the cavity 17 in the height direction, and thus the cavity 17 can be divided into at least two cavities, and the buffering and energy absorption functions of the doorsill reinforcing beam 100 for resisting external force deformation can be effectively enhanced.

And one of the at least two cavities is arranged on one side of the outer side of the vehicle body, the other cavity is arranged on one side deviating from the outer side of the vehicle body, and one of the cavities provides protection for the other cavity against side collision. The utility model discloses an in the embodiment, can set up bellying 12 on the outer chamber wall of another cavity, can improve the intensity and the rigidity of this cavity in the width direction of vehicle. In addition, the outer wall of the cavity 17 extends in the longitudinal direction of the vehicle, and when the vehicle body is subjected to a frontal collision or a rear collision, the rocker reinforcement beam 100 can become a part of a force transmission path for the frontal collision or the rear collision by being connected to the force receiving members at the front part and the rear part of the vehicle body, and is used for transmitting the external force of the frontal collision from the front end to the rear end and/or from the rear end to the front end.

In addition, the reinforcing beam body 10 is provided with a plurality of openings 19, and the plurality of openings 19 are arranged at intervals on the reinforcing beam body 10. So, the design has a plurality of trompils 19 on the outer wall of stiffening beam body 10, can ensure like this that the circulation of electrophoresis liquid is smooth and easy in threshold roof beam 330 cavity at application electrophoresis in-process, and the electrophoresis is abundant to can guarantee that the panel beating electrophoresis lacquer film thickness in threshold roof beam 330 cavity satisfies the anticorrosive requirement for quality of whole car.

According to the utility model discloses vehicle of second aspect embodiment includes: the side wall assembly 200, the underbody assembly 300 and the threshold reinforcing beam 100, wherein the underbody assembly 300 is fixedly connected with the side wall assembly 200, and the threshold reinforcing beam 100 is connected between the side wall assembly 200 and the underbody assembly 300. That is, the underbody assembly 300 is provided with the rocker beam 330, and the rocker reinforcement beam 100 is connected between the side wall assembly 200 and the underbody assembly 300, so that the underbody assembly 300 and the side wall assembly 200 can be welded together, thereby ensuring the structural strength of the rocker beam 330.

Wherein, underbody assembly 300 includes: the rocker 330 is connected to the side wall assembly 200, the rocker 330 is connected to the rocker reinforcement 340, and the rocker reinforcement 340 is disposed in the rocker 330, and in the height direction, the rocker reinforcement 340 is disposed opposite to the boss 12. Thus, the rocker beams 330 are provided on both sides of the underbody assembly 300, and the rocker reinforcement 340 is provided in the rocker beams 330, whereby the structural strength of the rocker beams 330 can be reinforced, and the rocker reinforcement 340 can be mounted particularly at a position where the rocker beams 330 are likely to be subjected to bending deformation. Also, the rocker reinforcement plate 340 is disposed opposite to the boss 12, and as shown in fig. 4 and 5, it can be understood that the second mounting hole 13 of the boss 12 is fixedly mounted between the mounting surface of the rocker 330 when the boss 12 is disposed at an end facing the rocker 330.

And, the side wall assembly 200 is provided with a third mounting hole, the underbody assembly 300 is provided with a fourth mounting hole, the first mounting hole 11 is arranged opposite to the third mounting hole, and the second mounting hole 13 is arranged opposite to the fourth mounting hole or the first mounting hole 11 is arranged opposite to the fourth mounting hole, and the second mounting hole 13 is arranged opposite to the third mounting hole.

That is, the first mounting hole 11 may be disposed opposite to the third mounting hole on the side wall assembly 200, so that the fastener is fixedly mounted in the third mounting hole on the side wall assembly 200 after passing through the first mounting hole 11, and the second mounting hole 13 is disposed opposite to the fourth mounting hole of the underbody assembly 300, so that the fastener is fixedly mounted in the second mounting hole 13 of the sill reinforcement beam 100 after passing through the fourth mounting hole, for example, as shown in fig. 4 of this embodiment. Of course, the first mounting hole 11 may be disposed opposite to the fourth mounting hole of the underbody assembly 300, and the second mounting hole 13 may be disposed opposite to the third mounting hole of the side wall assembly 200, and similarly, the threshold reinforcement beam 100 may be reliably and fixedly connected between the underbody assembly 300 and the side wall assembly 200.

Furthermore, a side of the side wall assembly 200 facing the rocker reinforcement beam 100 is provided with a first cavity 210, a side of the underbody assembly 300 facing the rocker reinforcement beam 100 is provided with a second cavity 310, the side wall assembly 200 and the underbody assembly 300 are fixedly connected, and the first cavity 210 and the second cavity 310 are connected to form a closed chamber 320 for wrapping the rocker reinforcement beam 100. Therefore, a first cavity 210 is formed in one side, facing the threshold reinforcing beam 100, of the side wall assembly 200, a second cavity 310 is formed in one side, facing the threshold reinforcing beam 100, of the underbody assembly 300, the first cavity 210 and the second cavity 310 are connected with each other to form a closed cavity 320, the threshold reinforcing beam 100 can be wrapped in the closed cavity 320, and therefore on the premise of light weight of an automobile body, the rigidity and the strength of the sill beam 330 structure are effectively improved, when the front collision and the small offset collision of the automobile occur, the sill beam 330 structure is prevented from being bent after being collided, in the process of side collision, the buffering and energy absorption effects of the sill beam 330 structures on two sides of the automobile body are improved, the problem that the battery pack arranged on the underbody assembly 300 is self-ignited due to too large intrusion after the sill beam 330 is stressed can be avoided, and the battery pack is effectively protected.

In addition, the side wall assembly 200 includes: the side plate reinforcing plate assembly 220, the side wall outer plate assembly 230 and the side wall inner plate assembly 240 are welded and connected through resistance spot welding to form the side wall assembly 200, wherein the side wall outer plate assembly 230, the side wall reinforcing plate assembly and the side wall inner plate assembly 240 are welded and connected through resistance spot welding. The first cavity 210 of the side wall assembly 200 facing the underbody assembly 300 is formed after the side wall outer panel assembly 230 and the side wall reinforcing panel assembly are connected by resistance spot welding. And, the rocker beam 330 and the rocker beam reinforcement plate 340 belong to the underbody assembly 300, and the rocker beam 330 is welded to the underbody assembly 300 by resistance spot welding. Wherein, a second cavity 310 is formed at one side of the threshold beam 330 facing the threshold reinforcing beam 100, after the side wall assembly 200 and the underbody assembly 300 are spliced and welded, the first cavity 210 of the side wall assembly 200 and the second cavity 310Y of the threshold beam 330 are overlapped in the direction to form an inner cavity structure of the threshold beam 330 of the side wall assembly 200, namely, a closed cavity 320, and the threshold reinforcing beam 100 is designed in the inner cavity structure.

Referring to fig. 10 to 13, the side sill assembly 200, the rocker reinforcement beam 100 and the underbody assembly 300 are connected and fixed in the following manner: firstly, on a side wall reinforcing plate subassembly welding tool fixture, a threshold reinforcing beam 100 is fixedly installed on an installation support 250 of a side wall reinforcing plate subassembly through two M8 bolts to form an assembly I (a side wall reinforcing plate assembly 220); secondly, assembling a first (side wall reinforcing plate assembly 220) and welding and connecting the side wall outer plate sub-assembly through resistance spot welding to form a second welded (side wall outer plate assembly 230); then, the second welding (the side wall outer plate assembly 230) and the side wall inner plate assembly 240 are welded and connected through resistance spot welding to form a third welding (the side wall assembly 200); finally, the third welding (the side wall assembly 200) and the underbody assembly 300 are welded together by resistance spot welding, and the rocker reinforcement beam 100 and the rocker beam 330 of the underbody assembly 300 are connected together by two M8 mounting bolts, so that the fourth assembly is formed.

Therefore, the first mounting holes 11 and the second mounting holes 13 are formed in the two opposite ends of the threshold reinforcing beam 100, a plurality of bolt connection mounting fixing points are provided between the threshold reinforcing beam 100 and the side wall assembly 200 and between the threshold reinforcing beam 330, the threshold reinforcing beam can be reliably and fixedly connected between the threshold reinforcing beam 330 and the side wall assembly 200 through the first mounting holes 11 and the second mounting holes 13, the rigidity and the strength of the side wall threshold beam structure can be obviously improved, the buffering and energy absorption effects of two sides of a vehicle body are improved during side collision, the high impact energy of the vehicle body is blocked, and the anti-collision performance of the vehicle can be effectively improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A threshold reinforcement beam (100), comprising: the reinforcing beam comprises a reinforcing beam body (10), wherein one end of the reinforcing beam body (10) is provided with a first mounting hole (11), the other end of the reinforcing beam body is provided with a boss (12) oppositely, the boss (12) is provided with a second mounting hole (13), and the first mounting hole (11) and the second mounting hole (13) are used for being connected with a threshold beam (330) and a side wall assembly (200).

2. The rocker reinforcement beam (100) according to claim 1, characterised in that the projection (12) extends in the longitudinal direction of the reinforcement beam body (10) and a step (14) is formed between the projection (12) and the other end wall surface of the reinforcement beam body (10).

3. The sill reinforcement beam (100) of claim 1, wherein the first and second mounting holes (11, 13) are offset in the longitudinal and/or height direction of the reinforcement beam body (10).

4. The sill reinforcement (100) according to claim 1, characterized in that the reinforcement body (10) is provided with mounting plates (15) at both ends in the length direction, the mounting plates (15) are provided with the first mounting holes (11), the mounting plates (15) are provided with flanges (16), and the flanges (16) are bent toward the inside of the reinforcement body (10).

5. The sill reinforcement (100) according to claim 1, characterized in that the reinforcement beam body (10) is provided with a cavity (17), at least one bead (18) being provided in the cavity (17), the bead (18) being connected to the cavity walls on both sides in the height direction of the cavity (17).

6. The sill reinforcement (100) according to claim 1, characterized in that the reinforcement beam body (10) is provided with a plurality of openings (19), the openings (19) being arranged at intervals on the reinforcement beam body (10).

7. A vehicle, characterized by comprising:

a side wall assembly (200);

the vehicle body bottom plate assembly (300), the vehicle body bottom plate assembly (300) is fixedly connected with the side wall assembly (200),

the rocker reinforcement beam (100) of any one of claims 1-6, the rocker reinforcement beam (100) being connected between the side sill assembly (200) and the underbody assembly (300).

8. The vehicle of claim 7, characterized in that the underbody assembly (300) comprises: threshold roof beam (330) and threshold roof beam reinforcing plate (340), threshold roof beam (330) with side wall assembly (200) are connected, threshold roof beam reinforcing plate (340) set up in threshold roof beam (330), in the direction of height, threshold roof beam reinforcing plate (340) with bellying (12) set up relatively.

9. The vehicle of claim 7, characterized in that the side wall assembly (200) is provided with a third mounting hole, the underbody assembly (300) is provided with a fourth mounting hole, the first mounting hole (11) is disposed opposite to the third mounting hole and the second mounting hole (13) is disposed opposite to the fourth mounting hole or the first mounting hole (11) is disposed opposite to the fourth mounting hole and the second mounting hole (13) is disposed opposite to the third mounting hole.

10. The vehicle of claim 7, characterized in that a side wall assembly (200) is provided with a first cavity (210) on a side facing the rocker reinforcement beam (100), a side floor assembly (300) is provided with a second cavity (310) on a side facing the rocker reinforcement beam (100), the side wall assembly (200) and the floor body assembly (300) are fixedly connected, and the first cavity (210) and the second cavity (310) are connected to form a closed chamber (320) for wrapping the rocker reinforcement beam (100).

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