Integrated vehicle threshold structure

Abstract

The invention discloses an integrated vehicle threshold structure which comprises a multi-cavity pipe fitting which comprises at least two vehicle outer side cavities close to the outer side of a vehicle and at least two vehicle inner side cavities close to the inner side of the vehicle. The vehicle inner side cavity and the vehicle outer side cavity are separated from each other through a side wall and a horizontal wall which are arranged in the multi-cavity pipe fitting; ripples extending in the length direction of the multi-cavity pipe fitting are arranged on the horizontal wall; the corrugations comprise upper protruding parts protruding upwards and lower protruding parts protruding downwards. The flange is connected with the multi-cavity pipe fitting, and the flange is used for being connected with an A column inner plate, an A column outer plate, a B column inner plate and a B column outer plate of the vehicle. According to the integrated vehicle threshold structure, vehicle lateral collision protection can be achieved, and the passive safety protection requirements of all-region column collisions of different grades can be met.

Description

Technical Field

[0001] The invention relates to a mechanical component, in particular to a vehicle structural component. Background Art

[0002] New energy vehicles are the focus of the current passenger car market. Compared with traditional fuel vehicles, new energy vehicles have higher requirements for passive safety performance. In addition to protecting the occupants in collision conditions, they also need to provide safety protection for the battery pack. In collision conditions, the battery pack is more likely to be squeezed during a side collision due to the concentrated deformation of the side column collision structure and the small energy absorption space. Therefore, providing the battery pack with full-area side column collision protection is an important requirement for the structural safety design of new energy vehicles.

[0003] In the prior art, the battery pack side full-area column collision protection structures mainly include the following:

[0004] A plate-shaped or tubular longitudinal reinforcement is added inside the cavity formed by the conventional threshold outer plate and inner plate, and the cross-section of the reinforcement is basically the same along the forward direction of the vehicle body. For example, the publication number is CN113825693A, the publication date is December 21, 2021, and the name is "Side threshold component for motor vehicle" discloses a side threshold component, which at least includes: an outer threshold member and an inner threshold member, and an outer volume is defined between the outer threshold member and the inner threshold member, an external profile member, and the outer profile member and the inner threshold member define an inner volume, a first profile member extending in the outer volume, the first profile member including at least one outer contact portion, at least one inner contact portion, and at least one joining wall joining the outer contact portion and the inner contact portion, and a second profile member extending in the inner volume, the second profile member including at least one outer contact portion, at least one inner contact portion, and at least one joining wall joining the outer contact portion and the inner contact portion.

[0005] Inside the cavity formed by the conventional rocker outer and inner panels, a plate-shaped or tubular transverse reinforcement is added, and the cross-section of the reinforcement is the same along the width of the vehicle body. For example, a Chinese patent document entitled "Vehicle Body Structure" with publication number CN215361572U and publication date December 31, 2021 discloses that the vehicle body structure includes: a battery and a protective structure, wherein the battery is mounted on the bottom portion of the central floor and the rear floor; the protective structure has a bottom portion for mounting the peripheral portion of the battery, and the protective structure includes plates, which are assembled to each other in a shape covering the peripheral portion of the central floor. In a side collision of the vehicle, the structure can distribute the collision load applied to the side surface of the protective structure in multiple directions to reduce the collision load applied to the battery, and can also prevent the battery from rupturing or being damaged, thereby safely protecting the battery. Summary of the invention

[0006] The purpose of the present invention is to provide an integrated vehicle threshold structure, which is different from the conventional vehicle threshold structure and does not have inner and outer threshold panels, but is directly connected to the inner and outer panels of the vehicle's A and B pillars, thereby being able to achieve vehicle side collision protection and adapt to different levels of full-range pillar collision passive safety protection requirements.

[0007] In order to achieve the above object, the present invention provides an integrated vehicle door sill structure, which includes:

[0008] A multi-cavity pipe, the multi-cavity pipe comprising at least two vehicle outer cavities close to the vehicle outer side and at least two vehicle inner cavities close to the vehicle inner side, the vehicle inner cavities and the vehicle outer cavities are separated from each other by side walls and horizontal walls arranged in the multi-cavity pipe; the horizontal wall is provided with corrugations extending along the length direction of the multi-cavity pipe; the corrugations include an upper protrusion protruding upward and a lower protrusion protruding downward;

[0009] A flange is connected to the multi-cavity pipe fitting, and the flange is used to connect to the inner and outer panels of the A-pillar and the inner and outer panels of the B-pillar of the vehicle.

[0010] The integrated vehicle door sill structure described in the present invention is installed between the inner and outer panels of the vehicle's A-pillar and B-pillar, and includes a multi-cavity pipe having at least four cavities (i.e., at least two vehicle inner cavities and at least two vehicle outer cavities), wherein the horizontal walls within the multi-cavity pipe have corrugated features protruding upward and downward, so that when a side collision occurs, a stable collision force transmission path is formed in the lateral direction of the vehicle (i.e., the vehicle width direction), thereby achieving side collision protection.

[0011] Furthermore, in the integrated vehicle door sill structure of the present invention, the characteristics of the corrugations are periodically distributed in the length direction of the multi-cavity pipe.

[0012] Furthermore, in the integrated vehicle door sill structure of the present invention, the raised height d of the upper raised portion is 1 ≤5t 2 , where t 2 Indicates the thickness of the horizontal wall where the corrugations are located.

[0013] Furthermore, in the integrated vehicle door sill structure of the present invention, the raised height d of the lower raised portion is 2 ≤5t 2 , where t 2 Indicates the thickness of the horizontal wall where the corrugations are located.

[0014] Furthermore, in the integrated vehicle rocker structure of the present invention, the characteristic periodic spacing d of the corrugations is 3 ≤L, where L represents the dimension of the horizontal wall where the corrugation is located in the vehicle width direction.

[0015] Furthermore, in the integrated vehicle door sill structure of the present invention, the wall of the multi-cavity pipe comprises a wall having a thickness of t 1 The first part and the thickness t 2 The second part, where t 2 >t 1 .

[0016] That is to say, in this embodiment, the multi-cavity pipe fitting of the present invention adopts a design with unequal wall thickness.

[0017] Furthermore, in the integrated vehicle door sill structure of the present invention, the thickness is t 2 The second part includes: a horizontal wall provided inside the multi-cavity pipe and / or a horizontal wall on the outer surface of the multi-cavity pipe; a thickness of t 1 The first part includes: a side wall arranged inside the multi-cavity tube and / or a side wall on the outer surface of the multi-cavity tube.

[0018] Furthermore, in the integrated vehicle door sill structure described in the present invention, the multi-cavity pipe fitting and the flange are both made of high-strength steel material.

[0019] Furthermore, in the integrated vehicle door sill structure described in the present invention, the multi-cavity pipe is made of a high-strength steel material with a tensile strength of more than 1000 MPa, and the flange is made of a high-strength steel material with a tensile strength of more than 500 MPa.

[0020] Furthermore, in the integrated vehicle door sill structure of the present invention, the flange includes a front door flange and a rear door flange.

[0021] The front door flange is used to cooperate and connect with the A-pillar outer panel, A-pillar inner panel, B-pillar outer panel, and B-pillar inner panel, and the rear door flange is used to cooperate and connect with the B-pillar outer panel, B-pillar inner panel, and the door sill rear section outer panel, and door sill rear section inner panel.

[0022] Furthermore, in the integrated vehicle door sill structure described in the present invention, at least three vehicle outer side cavities are provided.

[0023] The integrated vehicle door sill structure of the present invention has the following advantages and beneficial effects:

[0024] The integrated vehicle threshold structure of the present invention eliminates the inner and outer panels of the vehicle threshold and is assembled between the inner and outer panels of the A-pillar and B-pillar of the vehicle, thereby having the advantages of good lightweight level and low comprehensive cost.

[0025] The integrated vehicle door sill structure described in the present invention can form a stable collision force transmission path in the lateral direction of the vehicle when a side collision occurs, thereby providing the vehicle with better side collision protection performance in the range from the A-pillar to the C-pillar.

[0026] The integrated vehicle door sill structure described in the present invention can adjust the number and arrangement of the vehicle outer cavity and the vehicle inner cavity according to the lateral protection requirements, thereby further obtaining a cross-sectional design scheme for a multi-cavity pipe with more than four cavities.

[0027] In a preferred embodiment of the present invention, in order to achieve maximum lightweight, the integrated vehicle door sill structure of the present invention is designed with unequal wall thicknesses according to different requirements for deformation and energy absorption at different positions of the cross section of the multi-cavity pipe.

[0028] The multi-cavity pipe fittings and flanges in the integrated vehicle door sill structure described in the present invention are made of ultra-high-strength steel materials, and compared with the existing aluminum alloy extruded profile structure, have the technical advantages of low comprehensive cost and strong versatility.

[0029] Instruction Manual

[0030] Figure 1 A schematic diagram showing the arrangement of the integrated vehicle door sill structure described in the present invention with the inner and outer panels of the A-pillar and B-pillar of the vehicle in one embodiment.

[0031] Figure 2 A schematic structural diagram of an integrated vehicle door sill structure according to an embodiment of the present invention is shown.

[0032] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0033] Figure 4 for Figure 3 Cross-sectional view at “section” in the figure.

[0034] Figure 5 A schematic cross-sectional view of a multi-cavity pipe member having four cavities is shown in one embodiment of the integrated vehicle rocker structure of the present invention.

[0035] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0036] Figure 7 A schematic cross-sectional view of a multi-cavity pipe member having five cavities is shown in one embodiment of the integrated vehicle rocker structure of the present invention.

[0037] Figure 8A schematic diagram showing the arrangement of the integrated vehicle door sill structure described in the present invention with the inner and outer panels of the A-pillar and B-pillar of the vehicle in another embodiment.

[0038] Fig. 9 A schematic diagram showing the connection and cooperation between the flange and the A-pillar and the B-pillar of the integrated vehicle door sill structure according to one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0039] The integrated vehicle door sill structure of the present invention will be further explained and illustrated below in conjunction with specific embodiments and the accompanying drawings of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the present invention.

[0040] Figure 1 A schematic diagram showing the arrangement of the integrated vehicle door sill structure described in the present invention with the inner and outer panels of the A-pillar and B-pillar of the vehicle in one embodiment.

[0041] like Figure 1 As shown, in this embodiment, the integrated vehicle door sill structure of the present invention includes a multi-cavity pipe 1 and a flange 2 connected to the multi-cavity pipe 1. The multi-cavity pipe 1 includes at least two vehicle outer cavities close to the vehicle outer side and at least two vehicle inner cavities close to the vehicle inner side in the width direction of the vehicle.

[0042] The flange 2 is used for matching and connecting with the A-pillar outer panel 3-1, the A-pillar inner panel 3-2, the B-pillar outer panel 4-1, the B-pillar inner panel 4-2, the door sill rear section outer panel 5-1, and the door sill rear section inner panel 5-2.

[0043] Figure 2 A schematic structural diagram of an integrated vehicle door sill structure according to an embodiment of the present invention is shown.

[0044] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0045] like Figure 2 and Figure 3 As shown, the inner cavity of the vehicle and the outer cavity of the vehicle are separated from each other by a side wall 11 and a horizontal wall 12 arranged in the multi-cavity pipe. The horizontal wall 12 is provided with corrugations 13 extending along the length direction of the multi-cavity pipe.

[0046] Figure 4 Figure 3 Cross-sectional view at “section” in the figure.

[0047] like Figure 4 As shown, the corrugation 13 includes an upper convex portion convex upward and a lower convex portion convex downward, wherein the convex height of the upper convex portion is represented by d 1, the height of the lower raised part is expressed as d 2 .

[0048] like Figure 2 As shown, in this embodiment, the corrugations 13 are located on the horizontal wall 12 corresponding to the cavity outside the vehicle close to the outside of the vehicle.

[0049] It should be noted that, in another embodiment, the corrugation 13 may also be provided on a horizontal wall corresponding to the inner cavity of the vehicle.

[0050] In yet another embodiment, the corrugations 13 may also be provided simultaneously on the corresponding horizontal walls of the cavity inside the vehicle and the cavity outside the vehicle.

[0051] In a preferred embodiment, the corrugations 13 are characterized by being regularly distributed in a periodic manner along the length direction of the multi-cavity pipe. Figure 4 The "d 3 ” represents the characteristic periodic spacing of the corrugations.

[0052] In a more preferred embodiment, the protrusion height d of the upper protrusion is 1 ≤5t 2 , the height d of the lower raised part 2 ≤5t 2 , where t 2 represents the thickness of the horizontal wall where the corrugation is located. The characteristic periodic spacing d of the corrugation 13 3 ≤L, where L represents the width of the horizontal wall where the corrugation 13 is located.

[0053] In a specific example, the thickness of the horizontal wall in the multi-lumen tube 1 is t 2 can be 1.2mm, L can be 55mm, d 1 =d 2 =1.2mm, the periodic spacing d of the corrugation feature 3 It can be 30mm.

[0054] In the present invention, not only the corrugations have multiple configurations, but also the vehicle outer cavity 31 and the vehicle inner cavity 32 have multiple configurations.

[0055] Figure 5 A schematic cross-sectional view of a multi-cavity pipe member having four cavities is shown in one embodiment of the integrated vehicle rocker structure of the present invention.

[0056] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0057] like Figure 5As shown, in this embodiment, for a vehicle with a relatively general requirement for lateral protection, the multi-cavity pipe may include two vehicle outer cavities 14 and two vehicle inner cavities 15. The vehicle outer cavities 14 and the two vehicle inner cavities 15 are separated by a side wall 11 and a horizontal wall 12 provided in the multi-cavity pipe.

[0058] In a more preferred embodiment, Figure 6 As shown, the multi-cavity pipe fitting adopts a design with unequal wall thickness. The multi-cavity pipe fitting includes a wall with a thickness of t 1 The first part and the thickness t 2 The second part, and t 2 >t 1 The thickness is t 2 The second part includes: a horizontal wall 12 disposed inside the multi-cavity tube and / or a horizontal wall 16 on the outer surface of the multi-cavity tube; a thickness of t 1 The first part includes: the side wall 11 arranged in the multi-cavity tube and / or the side wall 17 on the outer surface of the multi-cavity tube. The horizontal wall is the conduction path of the collision force, so it is not thinned.

[0059] In a more specific embodiment, the multi-lumen pipe can be made of a three-lumen pipe and a C-shaped part, or can be made of two double-lumen pipes.

[0060] Figure 7 A schematic cross-sectional view of a multi-cavity pipe member having five cavities is shown in one embodiment of the integrated vehicle rocker structure of the present invention.

[0061] like Figure 7 As shown, in one embodiment, for a vehicle model with a higher requirement for lateral protection, the multi-cavity pipe may include, in its width direction, three vehicle outer cavities 14 stacked in the height direction and two vehicle inner cavities 15 stacked in the height direction. The vehicle outer cavities 14 and the two vehicle inner cavities 15 are separated by a side wall 11 and a horizontal wall 12 provided in the multi-cavity pipe.

[0062] In a more preferred embodiment, similar to Figure 6 As shown, the five-cavity pipe fitting adopts a design with unequal wall thickness. The multi-cavity pipe fitting includes a wall with a thickness of t 1 The first part and the thickness t 2 The second part, and t 2 >t 1 The thickness is t 2 The second part includes: a horizontal wall 12 disposed inside the multi-cavity tube and / or a horizontal wall 16 on the outer surface of the multi-cavity tube; a thickness of t 1The first part includes: the side wall 11 arranged in the multi-cavity tube and / or the side wall 17 on the outer surface of the multi-cavity tube. The horizontal wall is the conduction path of the collision force, so it is not thinned.

[0063] In a preferred embodiment of the present invention, the multi-cavity pipe is made of high-strength steel material, for example, high-strength steel with a tensile strength of more than 1000 MPa, or high-strength steel with a tensile strength of more than 1180 MPa.

[0064] Figure 8 A schematic diagram showing the arrangement of the integrated vehicle door sill structure described in the present invention with the inner and outer panels of the A-pillar and B-pillar of the vehicle in another embodiment.

[0065] Fig. 9 A schematic diagram showing the connection and cooperation between the flange and the A-pillar and the B-pillar of the integrated vehicle door sill structure according to one embodiment of the present invention is shown.

[0066] like Figure 8 and Fig. 9 As shown, in this embodiment, the integrated vehicle rocker structure includes a multi-cavity pipe 1 and a flange 2 connected to the multi-cavity pipe 1. The multi-cavity pipe 1 includes three vehicle outer cavities close to the vehicle outer side and two vehicle inner cavities close to the vehicle inner side in the width direction of the vehicle.

[0067] The flanges include a front door flange 21 and a rear door flange 22. The front door flange 21 is used to be connected with the A-pillar outer panel 3-1, the A-pillar inner panel 3-2, the B-pillar outer panel 4-1, and the B-pillar inner panel 4-2, and the rear door flange 22 is used to be connected with the B-pillar outer panel 4-1, the B-pillar inner panel 4-2, and the door sill rear section outer panel 5-1, and the door sill rear section inner panel 5-2.

[0068] The integrated vehicle door sill structure of the present invention can provide a vehicle with better side collision protection performance in the range from the A-pillar to the C-pillar, and has a good prospect for promotion and application.

[0069] It should be noted that the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0070] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith can be directly derived or easily associated with the contents disclosed by those skilled in the art from the present invention, and all should belong to the protection scope of the present invention.

Claims

1. An integrated vehicle door sill structure, characterized in that: include: A multi-cavity pipe, the multi-cavity pipe comprising at least two vehicle outer cavities close to the vehicle outer side and at least two vehicle inner cavities close to the vehicle inner side, the vehicle inner cavities and the vehicle outer cavities are separated from each other by side walls and horizontal walls arranged in the multi-cavity pipe; the horizontal wall is provided with corrugations extending along the length direction of the multi-cavity pipe; the corrugations include an upper protrusion protruding upward and a lower protrusion protruding downward; A flange is connected to the multi-cavity pipe fitting, and the flange is used to connect to the inner and outer panels of the A-pillar and the inner and outer panels of the B-pillar of the vehicle.

2. The integrated vehicle rocker structure according to claim 1, characterized in that: The characteristics of the corrugations are distributed periodically in the length direction of the multi-cavity pipe.

3. The integrated vehicle rocker structure according to claim 1, characterized in that: The protrusion height d1 of the upper protrusion is ≤5t2, wherein t2 represents the thickness of the horizontal wall where the corrugation is located.

4. The integrated vehicle rocker structure according to claim 1, characterized in that: The protrusion height d2 of the lower protrusion is ≤5t2, wherein t2 represents the thickness of the horizontal wall where the corrugation is located.

5. The integrated vehicle rocker structure according to claim 1, characterized in that: The characteristic periodic spacing of the corrugations is d3≤L, where L represents the width of the horizontal wall where the corrugations are located in the vehicle width direction.

6. The integrated vehicle rocker structure according to claim 1, characterized in that: The wall of the multi-lumen tube includes a first portion with a thickness of t1 and a second portion with a thickness of t2, wherein t2>t1.

7. The integrated vehicle rocker structure according to claim 6, characterized in that: The second portion with thickness t2 includes: horizontal walls inside the multi-cavity tube and / or horizontal walls on the outer surface of the multi-cavity tube; the first portion with thickness t1 includes: side walls inside the multi-cavity tube and / or side walls on the outer surface of the multi-cavity tube.

8. The integrated vehicle rocker structure according to claim 1, characterized in that: The multi-cavity pipe fittings and flanges are both made of high-strength steel materials.

9. The integrated vehicle rocker structure according to claim 8, characterized in that: The multi-cavity pipe fitting is made of high-strength steel material with a tensile strength of more than 1000 MPa, and the flange is made of high-strength steel material with a tensile strength of more than 500 MPa.

10. The integrated vehicle rocker structure according to claim 1, wherein: The flange includes a front door flange and a rear door flange.

11. The integrated vehicle rocker structure according to claim 1, characterized in that: At least three vehicle exterior cavities are provided.

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