Automobile rolling threshold structure

Abstract

The utility model discloses an automobile rolling threshold structure which comprises a threshold inner plate, the threshold inner plate is of a bent structure and comprises a first edge, a second edge, a third edge and a fourth edge which are connected in sequence, corners at the connecting positions of the edges are all round corners, and the round corner between the second edge and the third edge comprises an arc face I, an inclined face and an arc face II. The second edge is tangentially connected with one end of the arc surface, the other end of the arc surface is tangentially connected with the inclined surface, the other end of the inclined surface is tangentially connected with the arc surface II, and the other end of the arc surface II is tangentially connected with the third edge. Through the structural design at the R corner of the doorsill inner plate, on the premise that the performance requirement of the whole vehicle is guaranteed, the weight and cost of the vehicle body are not increased, and meanwhile the problems existing in an avoiding structure at the R corner of the doorsill are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile body structure design, and in particular relates to an automobile rolling door sill structure. Background Art

[0002] With the continuous development of the automobile industry, more and more consumers are paying attention to automobile collision safety and performance. At the same time, the country's requirements for environmental protection are getting higher and higher. In order to reduce emissions, it is becoming more and more necessary to reduce the weight of the vehicle. Therefore, more and more high-strength steel plates are used on the body, such as those with a strength of more than 1180MPa. Due to the particularity of roll forming, some overlaps with the used parts and the avoidance structure are at the R angle. Usually, the cross-section is increased to solve this problem, but the weight and cost will increase. Therefore, it is particularly important to provide a solution that does not increase or minimizes the cost and weight.

[0003] The utility model patent with application number CN201620278518 published on September 14, 2016 provides a roll-pressed automobile sill beam reinforcement, which is formed by rolling a high-strength steel plate with a thickness of 1.35-1.45 mm and a tensile strength of 950-1180 MPa. The reinforcement is groove-shaped, having a groove bottom, a first groove side wall, a second groove side wall, a first flange and a second flange. The first flange is connected to the groove bottom through the first groove side wall, and the cross section of the connection between the first flange and the first groove side wall is "S" shaped. The second flange is connected to the groove bottom through the second groove side wall, the first flange is higher than the second flange, and the first flange and the second flange are parallel to the groove bottom. However, the patent still cannot solve the above technical problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a vehicle rolled door sill structure which is simple in structure and easy to use. The utility model solves the problem of the avoidance structure at the R corner of the door sill while ensuring the performance requirements of the whole vehicle without increasing the weight and cost of the vehicle body through the structural design at the R corner of the inner plate of the door sill.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a car rolled door sill structure, including a door sill inner plate, the door sill inner plate is a bending structure including a first side, a second side, a third side and a fourth side connected in sequence, the corners at the connection of each side are rounded, the rounded corner between the second side and the third side includes an arc surface I, an inclined surface and an arc surface II, the second side is tangently connected to one end of the arc surface I, the other end of the arc surface is tangently connected to the inclined surface, the other end of the inclined surface is tangently connected to the arc surface II, and the other end of the arc surface II is tangently connected to the third side.

[0006] Furthermore, the automobile rolled sill structure also includes a front cabin vertical plate and a sill inner panel reinforcement plate, one side of the sill inner panel is welded to the front cabin vertical plate, the sill inner panel reinforcement plate is connected to the other side of the sill inner panel by welding, and a protrusion is provided on the front cabin vertical plate at a position corresponding to the corner of the second side and the third side of the sill inner panel, and the protrusion protrudes away from the sill inner panel.

[0007] Furthermore, the front cabin vertical plate is a bent structure, the door sill inner plate is attached to the inner side of the front cabin vertical plate, and a gap is provided between the protrusion and the door sill inner plate.

[0008] Furthermore, the threshold structure also includes a front floor or a front baffle, the cross-section of the front floor or the front baffle is an L-shaped structure, one side of the front floor or the front baffle is in contact with the outer side of the front cabin vertical plate, and the corner of the front floor or the front baffle is located above the protrusion.

[0009] Furthermore, the threshold inner panel reinforcement plate is a bent structure, and the threshold inner panel reinforcement plate includes a first inner panel and a second inner panel, the first inner panel is connected to the first side and the second side of the threshold inner panel, and the second inner panel is connected to the third side.

[0010] Furthermore, the threshold structure also includes a threshold front connecting plate, which is located on the inner side of the threshold inner plate reinforcement plate, one end of the threshold front connecting plate is welded to the inner side of the front compartment vertical plate, and the other end of the threshold front connecting plate is welded to the fourth side of the threshold inner plate.

[0011] Furthermore, the threshold structure also includes a threshold reinforcement plate and a side outer panel, both of which are bent structures, and the two ends of the threshold reinforcement plate are respectively welded to the two ends of the threshold front connecting plate, and the side outer panel is located on the outside of the threshold reinforcement plate, and the two ends of the side outer panel are respectively welded to the two ends of the threshold reinforcement plate.

[0012] The advantages of adopting the technical solution of the utility model are:

[0013] 1. The utility model solves the problem of the avoidance structure at the R corner of the door sill by means of the structural design at the R corner of the inner plate of the door sill, while ensuring the performance requirements of the whole vehicle and not increasing the weight and cost of the vehicle body.

[0014] 2. Under the premise of ensuring the performance requirements of the whole vehicle, the utility model does not change the structure of the used parts, does not change the boundaries, does not increase or minimizes the weight and cost; reduces the subsequent stamping deformation problem by optimizing the structural cross-section of the rolled parts; and makes the deformed position avoid the matching welding surface by shifting the position of the stamping deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 It is a schematic diagram of the overlap of the automobile roller door sill structure of the utility model;

[0017] Figure 2 It is a partial enlarged schematic diagram of the automobile roller door sill structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the inner panel of the door sill of the utility model;

[0019] Figure 4 It is a schematic diagram of the enlarged R angle of the inner plate of the door sill of the present invention.

[0020] The marks in the above figure are respectively: 1-1, threshold inner panel; 11, first side; 12, second side; 13, third side; 14, fourth side; 15, arc surface; 16, inclined surface I; 17, arc surface II; 1-2, front cabin vertical plate; 21, protrusion; 1-3, front floor or front baffle; 1-4, threshold inner panel reinforcement plate; 41, first inner panel; 42, second inner panel; 1-5, threshold front connecting plate; 1-6, threshold reinforcement plate; 1-7, side outer panel. DETAILED DESCRIPTION

[0021] In the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "planar direction", "circumferential", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation; be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] like Figures 1 to 4 As shown, a rolling door sill structure for an automobile includes a door sill inner panel 1-1, wherein the door sill inner panel 1-1 is a bent structure including a first side 11, a second side 12, a third side 13 and a fourth side 14 connected in sequence, the corners at the connection of each side are all rounded, the rounded corner between the second side 12 and the third side 13 includes an arc surface I 15, an inclined surface 16 and an arc surface II 17, the second side 12 is tangentially connected to one end of the arc surface 15, the other end of the arc surface 15 is tangentially connected to the inclined surface 16, the other end of the inclined surface 16 is tangentially connected to the arc surface II 17, and the other end of the arc surface II 17 is tangentially connected to the third side 13. The utility model solves the problem of the avoidance structure at the R angle of the door sill through the structural design at the R angle of the door sill inner panel, while ensuring the performance requirements of the whole vehicle, without increasing the weight and cost of the vehicle body.

[0023] The automobile roll-formed door sill structure also includes a front cabin vertical plate 1-2 and a door sill inner plate reinforcement plate 1-4, one side of the door sill inner plate 1-1 is welded to the front cabin vertical plate 1-2, and the door sill inner plate reinforcement plate 1-4 is connected to the other side of the door sill inner plate 1-1 by welding. A protrusion 21 is provided on the front cabin vertical plate 1-2 at a position corresponding to the corner of the second side 12 and the third side 13 on the door sill inner plate 1-1, and the protrusion 21 is convex in a direction away from the door sill inner plate 1-1. The front cabin vertical plate 1-2 is a bent structure, and the door sill inner plate 1-1 is fitted to the inner side of the front cabin vertical plate 1-2, and a gap is provided between the protrusion 21 and the door sill inner plate 1-1.

[0024] The threshold structure also includes a front floor or front baffle 1-3, the cross-section of the front floor or front baffle 1-3 is an L-shaped structure, one side of the front floor or front baffle 1-3 is in contact with the outer side of the front cabin vertical plate 1-2, and the corner of the front floor or front baffle 1-3 is located above the protrusion 21.

[0025] The sill inner panel reinforcement plate 1-4 is a bent structure, and includes a first inner panel 41 and a second inner panel 42. The first inner panel 41 is connected to the first side 11 and the second side 12 of the sill inner panel 1-1, and the second inner panel 42 is connected to the third side 13. The sill structure also includes a sill front connecting plate 1-5, which is located on the inner side of the sill inner panel reinforcement plate 1-4. One end of the sill front connecting plate 1-5 is welded to the inner side of the front cabin vertical plate 1-2, and the other end of the sill front connecting plate 1-5 is welded to the fourth side 14 of the sill inner panel 1-1.

[0026] The threshold structure also includes a threshold reinforcement plate 1-6 and a side outer panel 1-7, both of which are bent structures, and the two ends of the threshold reinforcement plate 1-6 are respectively welded to the two ends of the threshold front connecting plate 1-5, and the side outer panel 1-7 is located on the outside of the threshold reinforcement plate 1-6, and the two ends of the side outer panel 1-7 are respectively welded to the two ends of the threshold reinforcement plate 1-6.

[0027] Nowadays, due to higher and higher safety requirements, the threshold reinforcement plate contributes greatly to the collision of the side pillar, and the lightweight requirements are also getting higher and higher. Therefore, the threshold reinforcement plate is generally made of high-strength steel rolled parts to reduce the material thickness, thereby achieving the purpose of weight reduction. If the rolled threshold encounters an avoidance step at the R corner, the usually adopted solution is to adjust the position of the avoidance step so that the avoidance step is a certain distance away from the R corner. When the avoidance step cannot be adjusted due to the boundary, the cross-section is increased to make the R corner a certain distance away from the avoidance step. However, since there are many matching parts on the inner panel of the threshold, it will cause a butterfly effect, and the cross-section needs to be increased from front to back. At this time, the samples involved in the front of the car body need to increase the cross-section for matching. The resulting weight increase of about 1.5kg on one side and about 3kg on a single vehicle. The weight increase directly affects the lightweight and cost of the entire vehicle, so this is not a good solution.

[0028] Because both sides of the avoidance step are welding surfaces, the contour requirements of the opposite side are relatively high. If the avoidance step is directly made at the R angle, the welding surface will be severely deformed, affecting the quality of the parts. Therefore, the solution of the utility model is to transfer the position of the stamping deformation surface so that the deformed surface is not on the welding matching surface, thereby solving this problem. The utility model adds a relatively small inclined surface (such as Figure 4 As shown), at this time, the inclined surface needs to take into account the sealing that matches the front and rear ends, and cannot be particularly large. When the stamping avoids the local features of the step, the deformed surface is transferred to the newly added surface and R angle, thereby solving the stamping problem at the R angle of the rolled part.

[0029] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A rolling door sill structure for an automobile, characterized in that: The invention comprises a threshold inner panel (1-1), wherein the threshold inner panel (1-1) is a bent structure comprising a first side (11), a second side (12), a third side (13) and a fourth side (14) connected in sequence, wherein the corners at the connection of each side are rounded, and the rounded corner between the second side (12) and the third side (13) comprises an arc surface I (15), an inclined surface (16) and an arc surface II (17), wherein the second side (12) is tangentially connected to one end of the arc surface I (15), the other end of the arc surface I (15) is tangentially connected to the inclined surface (16), the other end of the inclined surface (16) is tangentially connected to the arc surface II (17), and the other end of the arc surface II (17) is tangentially connected to the third side (13).

2. The automobile rolling door sill structure according to claim 1, characterized in that: The invention also comprises a front cabin vertical plate (1-2) and a threshold inner plate reinforcement plate (1-4), one side of the threshold inner plate (1-1) is welded to the front cabin vertical plate (1-2), the threshold inner plate reinforcement plate (1-4) is connected to the other side of the threshold inner plate (1-1) by welding, and a protrusion (21) is provided on the front cabin vertical plate (1-2) at a position corresponding to the corner of the second side (12) and the third side (13) of the threshold inner plate (1-1), and the protrusion (21) protrudes in a direction away from the threshold inner plate (1-1).

3. The automobile rolling door sill structure according to claim 2, characterized in that: The front cabin vertical plate (1-2) is a bent structure, the threshold inner plate (1-1) is attached to the inner side of the front cabin vertical plate (1-2), and a gap is provided between the protrusion (21) and the threshold inner plate (1-1).

4. The automobile rolling door sill structure according to claim 3, characterized in that: The threshold structure also includes a front floor or a front baffle (1-3), the cross section of the front floor or the front baffle (1-3) is an L-shaped structure, one side of the front floor or the front baffle (1-3) is in contact with the outer side of the front cabin vertical plate (1-2), and the corner of the front floor or the front baffle (1-3) is located above the protrusion (21).

5. The automobile roll-on door sill structure according to any one of claims 2 to 4, characterized in that: The threshold inner panel reinforcement plate (1-4) is a bent structure, and comprises a first inner panel (41) and a second inner panel (42), wherein the first inner panel (41) is connected to a first side (11) and a second side (12) of the threshold inner panel (1-1), and the second inner panel (42) is connected to a third side (13).

6. The automobile rolling door sill structure according to claim 5, characterized in that: The threshold structure also includes a threshold front connecting plate (1-5), which is located on the inner side of the threshold inner plate reinforcing plate (1-4), one end of the threshold front connecting plate (1-5) is welded to the inner side of the front cabin vertical plate (1-2), and the other end of the threshold front connecting plate (1-5) is welded to the fourth side (14) of the threshold inner plate (1-1).

7. The automobile rolling door sill structure according to claim 6, characterized in that: The threshold structure also includes a threshold reinforcement plate (1-6) and a side panel outer plate (1-7), both of which are bent structures, and the two ends of the threshold reinforcement plate (1-6) are respectively welded to the two ends of the threshold front connecting plate (1-5), and the side panel outer plate (1-7) is located on the outside of the threshold reinforcement plate (1-6), and the two ends of the side panel outer plate (1-7) are respectively welded to the two ends of the threshold reinforcement plate (1-6).

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