Automobile door sill structure and automobile

Abstract

This invention relates to a car door sill structure and a car, including a door sill edge beam. The structure further includes a first reinforcing member, a second reinforcing member, and a third reinforcing member. Both ends of the first and second reinforcing members are respectively connected to the door sill edge beam and the door sill edge beam. Both ends of the third reinforcing member are connected to the first and second reinforcing members. This invention improves the torsional strength of the door sill in the Y-direction, reducing deformation in the Y-direction when the door sill is subjected to significant forces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile body, in particular to an automobile door sill structure and an automobile. BACKGROUND

[0002] With the development of automobile industry, the safety performance of vehicle is paid more and more attention, and 25% offset collision is considered as one of the most severe automobile collision tests. The full name of 25% offset collision is 25% coverage 64km / h frontal rigid barrier collision. During the 25% offset collision, the barrier and the engine compartment side beam overlap less, so that the engine compartment side beam deflects to a certain extent to the outside of the vehicle, and then drives the front suspension and front tire of the automobile to deflect and press the door, so that the door sill is subjected to a large force, resulting in large Y-direction deformation or even bending of the door sill, and the dummy posture is uncontrollable, so that the performance target cannot be achieved. SUMMARY

[0003] One of the purposes of the present application is to provide an automobile door sill structure to solve the problem of large Y-direction deformation or even bending of the door sill in the scenario of 25% offset collision.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] An automobile door sill structure, comprising a door sill side beam, further comprising a first reinforcing member, a second reinforcing member and a third reinforcing member, both ends of the first reinforcing member and both ends of the second reinforcing member are connected to the front floor lower longitudinal beam and the door sill side beam respectively, and both ends of the third reinforcing member are connected to the first reinforcing member and the second reinforcing member respectively.

[0006] According to the above technical means, the first reinforcing member and the second reinforcing member both fix the door sill side beam to the front floor lower longitudinal beam, and the second reinforcing member extends in the X direction, and the third reinforcing member is further arranged to fix the first reinforcing member and the second reinforcing member, thereby improving the Y-direction torsional strength of the door sill side beam and reducing the Y-direction deformation of the door sill.

[0007] Further, an engine compartment side beam rear section outer lining plate is further included, the front floor lower longitudinal beam and the engine compartment side beam rear section outer lining plate are connected through an engine compartment floor connecting member, and the end of the first reinforcing member away from the door sill side beam is fixedly connected with the engine compartment floor connecting member.

[0008] According to the above technical means, when the 25% offset collision is transmitted to the door sill side beam, the force can be dispersed to the engine compartment side beam rear section outer lining plate and the front floor lower longitudinal beam at the position of the engine compartment floor connecting member, thereby increasing the force transmission path and further improving the Y-direction torsional strength of the door sill side beam.

[0009] Further, the engine compartment side beam rear section outer lining plate is fixedly connected with the door sill side beam, the engine compartment side beam rear section and the engine compartment side beam front section.

[0010] According to the above technical means, the stability of the outer lining plate of the rear section of the engine compartment side beam is improved.

[0011] Further, the threshold side beam is fixedly connected with the outer lining plate of the rear section of the engine compartment side beam through the front section of the threshold side beam, and one end of the first reinforcing member away from the cabin floor connector is fixedly connected with the front section of the threshold side beam.

[0012] According to the above technical means, when the collision force is transmitted to the first reinforcing member, the front section of the threshold side beam can disperse the force to the threshold side beam and the outer lining plate of the rear section of the engine compartment side beam.

[0013] Further, the third reinforcing member is further connected to the front section of the threshold side beam, the threshold side beam, the cabin floor connector and the front floor lower longitudinal beam.

[0014] According to the above technical means, the threshold side beam and the floor lower longitudinal beam form a more stable whole, and the threshold side is further supported and strengthened in the Y direction.

[0015] Further, the front floor upper reinforcing longitudinal beam side reinforcing member is fixedly connected with the threshold side beam on both sides of the vehicle at both ends, and the part between the two end portions of the front floor upper reinforcing longitudinal beam side reinforcing member is fixedly connected with the front floor.

[0016] According to the above technical means, the support of the threshold side beam in the Y direction is further improved.

[0017] Further, the outer side of the threshold side beam is provided with a side wall threshold reinforcing member, and the side wall threshold reinforcing member and the threshold side beam form a cavity structure.

[0018] According to the above technical means, the cavity structure plays a role of absorbing energy in collision and relieving the collision force.

[0019] Further, the third reinforcing member has a cavity inside, and a reinforcing rib supported on the inner wall of the cavity is arranged in the cavity.

[0020] According to the above technical means, the strength of the third reinforcing member is improved.

[0021] Further, the front section of the threshold side beam and the front floor are fixedly connected with a front wall plate, and the front wall plate is fixedly connected with the outer lining plate of the rear section of the engine compartment side beam.

[0022] An automobile comprising the above automobile threshold structure.

[0023] The beneficial effects of the present application are as follows:

[0024] The first reinforcing member and the second reinforcing member are connected with the front floor lower longitudinal beam at one end and connected with the door sill side beam at the other end, the front floor lower longitudinal beam and the door sill side beam are effectively connected, and the first reinforcing member and the second reinforcing member are connected and fixed through the third reinforcing member, the door sill Y direction is further strengthened, the torsional strength of the door sill in the Y direction is improved, and the Y direction deformation of the door sill caused by a larger force can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the structure of the present application located on the inside of the vehicle;

[0026] Figure 2 is a schematic view of the structure of the present application located on the bottom side of the vehicle;

[0027] Figure 3 is a schematic view of the structure of the present application located on the bottom side of the vehicle;

[0028] Figure 4 is a schematic view of the structure of the present application located on the bottom side of the vehicle;

[0029] Wherein, 1 - front wall panel, 2 - front floor, 3 - side wall door sill reinforcing member front section, 4 - door sill side beam front section, 5 - side wall door sill reinforcing member, 6 - door sill side beam, 7 - front floor upper reinforcing longitudinal beam side reinforcing member, 8 - front row seat installation front cross beam, 9 - engine compartment side beam rear section outer lining plate, 10 - engine compartment floor connecting piece, 11 - first reinforcing member, 12 - second reinforcing member, 13 - front floor lower longitudinal beam, 14 - third reinforcing member, 15 - profile installation nut, 16 - profile installation bolt, 17 - reinforcing rib. DETAILED DESCRIPTION

[0030] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. The present application can also be implemented or applied by means of other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for the purpose of illustrating the present application, and are not intended to limit the protection scope of the present application.

[0031] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings, rather than being drawn according to the number, shape and size of the components in actual implementation. The actual implementation of each component may be a random change in type, number and proportion, and the component layout type may also be more complex.

[0032] The present embodiment proposes an automobile door sill structure, as shown inFigure 1 As shown, the side wall rocker reinforcement 5 is welded to the rocker side sill 6, and the side wall rocker reinforcement front section 3 is welded to the rocker side sill front section 4, so that the side wall rocker reinforcement 5, the rocker side sill 6, the side wall rocker reinforcement front section 3 and the rocker side sill front section 4 form a closed and stable cavity structure to transfer and absorb the force and energy brought by the collision, and when a 25% offset collision occurs, the cavity structure formed plays a role of collision energy absorption, thereby buffering the collision.

[0033] The side wall rocker reinforcement front section 3 and the rocker side sill front section 4 are stamped and formed by high-strength steel plates, and the side wall rocker reinforcement 5 and the rocker side sill 6 are roll-formed by high-strength steel plates, so as to reduce the thickness of the parts as much as possible under the guarantee of the function and performance requirements of the parts, thereby giving consideration to lightweight design.

[0034] The front floor upper longitudinal beam side reinforcement 7 and the front seat mounting front cross beam 8 are integral through pieces, the two sides of the front floor upper longitudinal beam side reinforcement 7 and the front seat mounting front cross beam 8 are respectively overlapped with the rocker side sill 6 on both sides of the vehicle and are welded by spot welding, and the portions between the two ends are further welded to the front floor 2 by spot welding. The front floor upper longitudinal beam side reinforcement 7 and the front seat mounting front cross beam 8 are left-right through integral type, which not only strengthens the torsional stiffness of the vehicle, but also supports and strengthens the rocker side sill 6, thereby improving the strength of the vehicle in the Y direction. Both of them are stamped and formed by high-strength steel plates, and weight reduction holes are provided without affecting the strength of the parts, thereby giving consideration to lightweight design.

[0035] As shown, Figure 2 The rocker side sill 6 is connected to the engine compartment side sill rear section outer lining plate 9 through the rocker side sill front section 4 to form an integral structure, the engine compartment side sill rear section outer lining plate 9 is fixedly connected with the engine compartment side sill front section and the engine compartment side sill rear section (not shown in the figure), thereby forming a stable and reliable beam system structure between the engine compartment side sill front section, the engine compartment side sill rear section, the rocker side sill front section 4, the rocker side sill 6 and the front floor lower longitudinal beam 13. At the same time, the front wall panel 1 is connected with the rocker side sill front section 4, the engine compartment side sill rear section outer lining plate 9 and the front floor 2. The force transmission path is increased, and the torsional strength of the rocker side sill 6 is improved.

[0036] The first reinforcement 11 is connected with the engine compartment floor connecting piece 10 and the rocker side sill front section 4 at both ends respectively, and the second reinforcement 12 is connected with the front floor lower longitudinal beam 13 and the rocker side sill 6 at both ends respectively, and through the first reinforcement 11 and the second reinforcement 12, support is formed for the rocker side sill front section 4 and the rocker side sill 6, thereby further improving the stability of the vehicle in the Y direction.

[0037] In the embodiment, the front floor longitudinal beam 13, the rocker side beam 6 and the rocker side beam front section 4 all extend towards the X direction, while the engine compartment side beam rear section outer lining plate 9 extends towards the Y direction, and the engine compartment side beam rear section outer lining plate 9 is connected with the front floor longitudinal beam 13 and the rocker side beam front section 4, so that the collision force generated in front of the automobile can be dispersed and transmitted to the front floor longitudinal beam 13 and the rocker side beam 6.

[0038] The front floor longitudinal beam 13 is connected with the engine compartment side beam rear section outer lining plate 9 through the engine compartment floor connecting piece 10, and the engine compartment side beam rear section outer lining plate 9 is connected with the engine compartment side beam rear section and the engine compartment side beam front section, so as to transmit the force and energy generated by the collision from the front.

[0039] As shown in Figure 3 The main body part of the third reinforcing member 14 is connected with the first reinforcing member 11 and the second reinforcing member 12, and the connection direction is the Z direction, and the two ends of the third reinforcing member 14 in the Y direction are respectively provided with a pair of outwardly protruding connecting plates, and the two pairs of connecting plates are respectively fixedly connected with the rocker side beam front section 4, the rocker side beam 6, the engine compartment floor connecting piece 10 and the front floor longitudinal beam 13, so that the first reinforcing member 11 and the second reinforcing member 12 not only provide mounting points for the third reinforcing member 14, but also connect the rocker side beam 6 and the floor longitudinal beam 13 to form a more stable whole, and further support and strengthen the rocker side beam 6 in the Y direction.

[0040] As shown in Figure 4 The third reinforcing member 14 is connected with the vehicle body in the form of assembly, and is connected and fixed with the first reinforcing member 11 and the second reinforcing member 12 through four profile mounting nuts 15, and is connected with the rocker side beam front section 4, the rocker side beam 6, the engine compartment floor connecting piece 10 and the front floor longitudinal beam 13 through six profile mounting bolts 16. The multi-point mounting ensures that the third reinforcing member 14 does not fall off during the process of the collision tire extruding the rocker, and completely participates in the energy absorption process. The third reinforcing member 14 is made of aluminum alloy extrusion, and the internal cavity of the third reinforcing member 14 is provided with three reinforcing ribs 17, which better increase the strength of the profile itself and further improve the energy absorption capacity, ensure that the deformation of the rocker is within an acceptable range, so as to achieve the performance target.

[0041] In the embodiment, the X, Y and Z directions are all directions in the automobile coordinate system.

[0042] The embodiment also provides an automobile comprising the automobile rocker structure.

[0043] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent replacement or transformation made by the person skilled in the art on the basis of the present application is within the protection scope of the present application.

Claims

1. An automobile rocker structure comprising a rocker side beam (6), characterized in that: The automobile door sill structure also comprises a first reinforcing member (11), a second reinforcing member (12), and a third reinforcing member (14), both ends of the first reinforcing member (11) and both ends of the second reinforcing member (12) are connected to the rocker side sill (6) and the front floor lower longitudinal beam (13) respectively, both ends of the third reinforcing member (14) are connected to the first reinforcing member (11) and the second reinforcing member (12) respectively; the automobile door sill structure also comprises an engine compartment side sill rear section outer lining plate (9); the front floor lower longitudinal beam (13) and the engine compartment side sill rear section outer lining plate (9) are connected through a cabin floor connecting member (10); one end of the first reinforcing member (11) away from the rocker side sill (6) is fixedly connected to the cabin floor connecting member (10), and one end of the first reinforcing member (11) away from the cabin floor connecting member (10) is also fixedly connected to the rocker side sill front section (4); the engine compartment side sill rear section outer lining plate (9) is fixedly connected to the rocker side sill (6) and the engine compartment side sill, the rocker side sill (6) is fixedly connected to the engine compartment side sill rear section outer lining plate (9) through the rocker side sill front section (4); the rocker side sill front section (4) and the front floor (2) are both fixedly connected to the front wall plate (1), the front wall plate (1) is fixedly connected to the engine compartment side sill rear section outer lining plate (9); the third reinforcing member (14) is also connected to the rocker side sill front section (4), the rocker side sill (6), the cabin floor connecting member (10), and the front floor lower longitudinal beam (13).

2. The automobile rocker structure according to claim 1, characterized by: The automobile door sill structure also comprises a front floor upper reinforcing longitudinal beam side reinforcing member (7), both ends of which are fixedly connected to the rocker side sill (6) on both sides of the vehicle, and the part between the two end portions of the front floor upper reinforcing longitudinal beam side reinforcing member (7) is fixedly connected to the front floor (2); the automobile door sill structure also comprises a front-row seat mounting front cross beam (8), both ends of which are fixedly connected to the rocker side sill (6) on both sides of the vehicle, and the part between the two end portions of the front-row seat mounting front cross beam (8) is fixedly connected to the front floor (2).

3. The automobile rocker structure according to claim 1, characterized by: The outer side of the rocker side sill (6) is provided with a side wall door sill reinforcing member (5), and the side wall door sill reinforcing member (5) and the rocker side sill (6) form a cavity structure.

4. The automobile rocker structure according to claim 1, characterized by: The third reinforcing member (14) has a cavity inside, and a reinforcing rib (17) is arranged in the cavity and supported on the inner wall of the cavity.

5. An automobile characterized by comprising: The automobile door sill structure comprises the automobile door sill structure according to any one of claims 1-4.

Images