Novel thermal forming threshold

Abstract

The utility model provides a novel thermoforming doorsill, which relates to the technical field of vehicle bodies, and comprises a thermoforming doorsill beam and an energy absorption plate, the thermoforming doorsill beam is made of ultrahigh-strength steel through a thermoforming stamping process, and the structural form of the thermoforming doorsill beam is similar to a U-shaped or n-shaped structure. The energy absorption plate is made of DP780 dual-phase steel through a stamping process, and the structural form of the energy absorption plate is similar to a W-shaped structure. The energy-absorbing plate is installed in the U-shaped structure of the doorsill beam, is positioned and clamped through a clamp, and is connected with the doorsill beam through electric resistance welding in the matching area of the energy-absorbing plate and the doorsill beam. Compared with a traditional aluminum alloy extrusion doorsill beam, the novel thermal forming doorsill can guarantee safety protection of a battery pack and life safety of passengers, and meanwhile cost and weight are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, in particular to a novel hot-formed door sill. Background Art

[0002] At this stage, people have higher and higher requirements for vehicle safety performance, and the requirements for side collision in the vehicle collision evaluation standards are becoming more and more stringent. High-strength body can improve the protection of crew cabin personnel. As an important part of the whole pure electric vehicle, the body can provide protection for passengers and battery packs when the vehicle collides, and its collision performance is directly related to the life safety of passengers. In the design process of pure electric vehicles, the threshold beam is very important, and it plays the dual role of battery pack safety protection and passenger life safety. Therefore, a new type of hot-formed threshold is needed to provide safety protection for battery packs and passengers. At present, the thresholds on existing models mainly include aluminum extrusion and roll-pressing solutions. Aluminum extrusion threshold beams are excellent in lightweight, but their disadvantage is the high unit cost. Roll-pressed threshold beams are excellent in unit cost, but they do not have an advantage in lightweight. Utility Model Content

[0003] The purpose of the utility model is to solve the problem in the prior art of better ensuring the safety protection of the battery pack and the life safety of the occupants while reducing the cost and reducing the weight, and to propose a new type of hot-formed door sill.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of thermoformed threshold, including a thermoformed threshold beam assembly, the thermoformed threshold beam assembly includes a thermoformed threshold beam and a group of energy absorbing plates, a group of the energy absorbing plates are arranged in the inner wall of the thermoformed threshold beam, and the outer wall of the thermoformed threshold beam is provided with a body threshold inner panel.

[0005] Preferably, a group of the energy absorbing plates are fixedly connected to the hot-formed sill beam by resistance welding, the energy absorbing plates are made of DP780 dual-phase steel, and the hot-formed sill beam is made of ultra-high strength steel.

[0006] Preferably, a group of mounting holes are formed through the outer wall of the thermoformed rocker beam and the outer wall of the inner plate of the vehicle body rocker, and a welded square nut is fixedly mounted on the outer wall of the inner plate of the vehicle body rocker.

[0007] Preferably, the vehicle body rocker inner panel and the thermoformed rocker beam are fixedly connected by connecting bolts.

[0008] Preferably, the vehicle body rocker inner panel and the thermoformed rocker beam are fixedly connected by resistance welding.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. In the utility model, in the case of side collision, the 2GPA ultra-high strength threshold beam of the new hot-formed threshold beam assembly transmits the collision force to the side B-pillar, upper side beam, and seat cross beam and other parts. The energy absorption plate adopts DP780 dual-phase steel to show higher strength than ordinary high-strength steel, so it has greater impact energy absorption capacity, which is conducive to improving the safety of the vehicle and the safety of the battery pack. In the case of frontal collision, the transmission path is: front anti-collision beam → energy absorption box → front longitudinal beam → torque box → threshold beam → rear longitudinal beam. The 2GPA ultra-high strength threshold beam of the new hot-formed threshold beam assembly has stronger mechanical properties, thereby ensuring the smooth transmission of collision force and the safety of the passenger compartment. The energy absorption plate is installed in the U-shaped structure of the hot-formed threshold beam, positioned and clamped by a clamp, and connected together in the matching area of ​​the two using resistance welding. Compared with the traditional aluminum alloy extruded threshold beam, this new hot-formed threshold can not only ensure the safety of the battery pack and the life safety of the occupants, but also reduce costs and weight.

[0011] 2. In the utility model, when it is necessary to connect the thermoformed sill beam with the inner panel of the vehicle body sill, the connecting bolts can be passed through the mounting holes provided in the thermoformed sill beam and the inner panel of the vehicle body sill, and then threadedly connected with the welded square nuts, thereby realizing a quick fixed connection between the thermoformed sill beam and the inner panel of the vehicle body sill, or the thermoformed sill beam and the inner panel of the vehicle body sill can be connected together by resistance welding. Two different connection methods are provided, which facilitates the connection between the thermoformed sill beam and the inner panel of the vehicle body sill. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the relevant structure of a thermoformed door sill beam assembly in a novel thermoformed door sill proposed by the utility model;

[0013] Figure 2 A related structural diagram of a thermoformed door sill beam assembly from another perspective in a novel thermoformed door sill proposed by the utility model;

[0014] Figure 3 Related structural diagrams of a thermoformed door sill beam assembly from other perspectives in a novel thermoformed door sill proposed by the utility model;

[0015] Figure 4 A diagram showing the installation method of a new type of thermoformed door sill beam assembly and a vehicle body in a new type of thermoformed door sill proposed by the utility model;

[0016] Figure 5 FIG2 is a diagram showing a new type of thermoformed door sill beam assembly and a vehicle body installation method in a new type of thermoformed door sill proposed by the utility model;

[0017] Legend: 34. Thermoformed sill beam assembly; 11. Thermoformed sill beam; 12. Energy absorption plate; 31. Body sill inner panel; 32. Connecting bolts; 33. Welded square nuts. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1, as Figure 1-Figure 5 As shown, the utility model provides a novel thermoformed threshold, including a thermoformed threshold beam assembly 34, the thermoformed threshold beam assembly 34 includes a thermoformed threshold beam 11 and a group of energy absorbing plates 12, the group of energy absorbing plates 12 is arranged in the inner wall of the thermoformed threshold beam 11, and the outer wall of the thermoformed threshold beam 11 is provided with a vehicle body threshold inner plate 31. The group of energy absorbing plates 12 is fixedly connected to the thermoformed threshold beam 11 by resistance welding, the energy absorbing plates 12 are made of DP780 dual-phase steel, and the thermoformed threshold beam 11 is made of ultra-high strength steel.

[0021] The effect achieved by the entire embodiment 1 is that, in the event of a side collision, the 2GPA ultra-high strength hot-formed sill beam 11 of the new hot-formed sill beam assembly 34 transmits the collision force to the side B-pillars, upper side beams, and seat cross beams and other parts. The energy absorption plate 12 uses DP780 dual-phase steel to show higher strength than ordinary high-strength steel, so it has a greater impact energy absorption capacity, which is beneficial to improving the safety of the vehicle and the safety of the battery pack. In the event of a frontal collision, the transmission path is: front anti-collision beam → energy absorption box → front longitudinal beam → torsion box → sill beam → rear longitudinal beam. The 2GPA ultra-high strength hot-formed sill beam 11 of the new hot-formed sill beam assembly 34 has stronger mechanical properties, thereby ensuring the smooth transmission of collision force and the safety of the passenger compartment. The energy absorption plate 12 is installed in the U-shaped structure of the hot-formed sill beam 11, is positioned and clamped by a clamp, and is connected together in the matching area of ​​the two using resistance welding. Compared with the traditional aluminum alloy extruded sill beam, the new hot-formed sill beam 11 can not only ensure the safety of the battery pack and the life safety of the passengers, but also reduce the cost and weight.

[0022] Embodiment 2, as Figure 1-Figure 5As shown, a group of mounting holes are formed through the outer wall of the thermoformed sill beam 11 and the outer wall of the body sill inner panel 31, and a welded square nut 33 is fixedly mounted on the outer wall of the body sill inner panel 31. The body sill inner panel 31 and the thermoformed sill beam 11 are fixedly connected by connecting bolts 32. The body sill inner panel 31 and the thermoformed sill beam 11 are fixedly connected by resistance welding.

[0023] The effect achieved by the entire embodiment 2 is that when it is necessary to connect the thermoformed sill beam 11 with the vehicle body sill inner panel 31, the connecting bolt 32 can be passed through the mounting holes opened between the thermoformed sill beam 11 and the vehicle body sill inner panel 31, and then threadedly connected with the welding square nut 33, so as to achieve a quick fixed connection between the thermoformed sill beam 11 and the vehicle body sill inner panel 31, or the thermoformed sill beam 11 and the vehicle body sill inner panel 31 can be connected together by resistance welding. Two different connection methods are provided, which facilitates the connection between the thermoformed sill beam 11 and the vehicle body sill inner panel 31.

[0024] Working principle: In case of side collision, the 2GPA ultra-high strength hot-formed sill beam 11 of the new hot-formed sill beam assembly 34 transmits the collision force to the side B-pillars, upper side beams, and seat cross beams. The energy absorption plate 12 uses DP780 dual-phase steel to show higher strength than ordinary high-strength steel, so it has greater impact energy absorption capacity, which is beneficial to improve the safety of the vehicle and the safety of the battery pack. In case of head-on collision, the transmission path is: front anti-collision beam → energy absorption box → front longitudinal beam → torsion box → sill beam → rear longitudinal beam. The 2GPA ultra-high strength hot-formed sill beam 11 of the new hot-formed sill beam assembly 34 has stronger mechanical properties, thereby ensuring the smooth transmission of collision force and the safety of the passenger compartment. The energy absorption plate 12 is installed in the U-shaped structure of the hot-formed sill beam 11, positioned and clamped by a clamp, and connected together in the matching area of ​​the two using resistance welding. Compared with the traditional aluminum alloy extruded sill beam, this new hot-formed sill beam 11 can not only ensure the safety of the battery pack and the life safety of the occupants, but also reduce costs and weight. When the hot-formed sill beam 11 needs to be connected to the body sill inner panel 31, the connecting bolt 32 can be passed through the mounting holes opened between the hot-formed sill beam 11 and the body sill inner panel 31, and then threadedly connected with the welding square nut 33, so as to realize a quick fixed connection between the hot-formed sill beam 11 and the body sill inner panel 31, or the hot-formed sill beam 11 and the body sill inner panel 31 can be connected together by resistance welding. Two different connection methods are provided, which facilitates the connection between the hot-formed sill beam 11 and the body sill inner panel 31.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A new type of thermoformed door sill, characterized by: The invention comprises a hot-formed sill beam assembly (34), wherein the hot-formed sill beam assembly (34) comprises a hot-formed sill beam (11) and a group of energy absorbing plates (12), wherein the group of energy absorbing plates (12) is arranged in the inner wall of the hot-formed sill beam (11), and the outer wall of the hot-formed sill beam (11) is provided with a vehicle body sill inner plate (31); the group of energy absorbing plates (12) is fixedly connected to the hot-formed sill beam (11) by resistance welding, the energy absorbing plates (12) are made of DP780 dual-phase steel, and the hot-formed sill beam (11) is made of ultra-high strength steel.

2. A novel thermoformed door sill according to claim 1, characterized in that: A group of mounting holes are provided through the outer wall of the thermoformed sill beam (11) and the outer wall of the vehicle body sill inner plate (31), and a welded square nut (33) is fixedly mounted on the outer wall of the vehicle body sill inner plate (31).

3. The novel thermoformed door sill according to claim 1 is characterized by: The vehicle body rocker inner plate (31) and the thermoformed rocker beam (11) are fixedly connected via connecting bolts (32).

4. The novel thermoformed door sill according to claim 1 is characterized by: The vehicle body rocker inner plate (31) and the thermoformed rocker beam (11) are fixedly connected by resistance welding.

Images