A vehicle door sill structure and vehicle body

Abstract

This invention discloses a vehicle sill structure and vehicle body, relating to the field of vehicle manufacturing technology. It includes an inner sill plate, a structural reinforcement block, and a sill reinforcement plate. The structural reinforcement block is disposed within a cavity formed by the inner sill plate and the sill reinforcement plate. A first through-hole is formed on the upper side of the inner sill plate, and the structural reinforcement block has a first electrophoresis channel and a second electrophoresis channel. A second through-hole is formed on the upper side of the sill reinforcement plate. The first through-hole, the first electrophoresis channel, the second electrophoresis channel, and the second through-hole form a first channel path for the electrophoretic liquid and electric field. A third through-hole is formed on the lower side of the sill reinforcement plate, and the structural reinforcement block has a third electrophoresis channel corresponding to the third through-hole. The third through-hole, the third electrophoresis channel, and the second through-hole form a second channel path for the electrophoretic liquid and electric field. This invention forms two channel paths, ensuring an increase in the electrophoretic film thickness in the outer cavity of the sill and meeting the required anti-corrosion performance standards.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and in particular to a vehicle body door sill structure and vehicle body. Background Technology

[0002] With increasingly stringent lightweighting standards, OEMs have abandoned the traditional approach of achieving collision safety and NVH performance through reinforcing the body panels themselves or adding body panel reinforcements. Instead, they now typically use structural reinforcement blocks. This solution improves vehicle weight reduction while also enhancing collision and NVH performance, and facilitates assembly in the workshop, improving operability. However, because structural reinforcement blocks are essentially solid structures installed between the inner sill plate and the sill reinforcement plate, they hinder the normal flow and radiation of electrophoretic fluid and electromagnetic fields, resulting in a lower film thickness in the cavity formed by the sill reinforcement plate and the outer side panel, thus affecting corrosion resistance.

[0003] Existing technologies disclose several anti-corrosion solutions for door sill structures. For example, CN108466658A discloses a door sill structure for a side panel of a vehicle body, which utilizes the electrophoresis port on the outer panel and the drain hole in the lower part of the door cavity to form a drainage path; CN114802464A discloses a side panel, a vehicle body, and a vehicle, in which multiple drain holes are provided at intervals at the lower end of the inner cavity of the door sill, and the drain holes are connected to the inner cavity of the door sill, so that liquid flowing from the outer cavity of the door sill into the inner cavity of the door sill can be discharged outside the vehicle through the drain holes; CN220483413U discloses a door sill structure for a vehicle and a vehicle having the same, in which electrophoresis ports are provided on the outer panel of the side panel, so that during the electrophoresis process, the electrophoresis liquid can enter the interior of the door sill structure through the electrophoresis ports and form an electrophoresis layer on the inner wall of the door sill beam and the outer panel of the side panel.

[0004] The above solutions involve cavities formed by sheet metal and sheet metal or sheet metal and aluminum profiles, and all of them have a single electrophoresis channel. If structural reinforcement blocks are added, it will hinder the normal flow and radiation of electrophoretic liquid and electromagnetic field. All of the above solutions achieve electrophoretic flow through openings. For threshold structures with relatively long lengths, many openings are required, which affects the structural strength. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a vehicle sill structure and vehicle body that form two channel paths, thereby ensuring an increase in the thickness of the electrophoretic film in the outer cavity of the sill and achieving the required anti-corrosion performance standards.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a vehicle sill structure, including an inner sill plate, a structural reinforcement block, and a sill reinforcement plate, wherein the structural reinforcement block is disposed within the cavity formed by the inner sill plate and the sill reinforcement plate;

[0008] The upper side of the inner sill plate has a first through hole, the structural reinforcement adhesive block is provided with a first electrophoresis channel and a second electrophoresis channel, the upper side of the sill reinforcement plate has a second through hole, and the first through hole, the first electrophoresis channel, the second electrophoresis channel and the second through hole form a first channel path for electrophoretic liquid and electric field;

[0009] A third through hole is opened on the lower side of the threshold reinforcement plate, and a third electrophoresis channel is set in the structural reinforcement adhesive block corresponding to the third through hole. The third through hole, the third electrophoresis channel and the second through hole form a second channel path for electrophoretic liquid and electric field.

[0010] As a further implementation, the first electrophoresis channel and the second electrophoresis channel are located in the middle of the structural reinforcement block, and the first electrophoresis channel and the second electrophoresis channel are arranged sequentially along the length of the structural reinforcement block.

[0011] As a further implementation, the first electrophoresis channel is a groove structure, and the second electrophoresis channel is a through-hole structure that reinforces the width direction of the gel block.

[0012] As a further implementation, a side panel is installed on the outside of the sill reinforcement plate, and a sill cavity is formed between the side panel and the sill reinforcement plate.

[0013] In the first channel path and the second channel path, the electrophoretic liquid and the electric field enter the outer cavity of the threshold through the second through hole.

[0014] As a further implementation, the threshold reinforcement plate has a stepped structure, and the opening position of the second through hole has a set slope.

[0015] As a further implementation, multiple first through holes are provided along the length direction of the inner sill plate;

[0016] Multiple second and third through holes are respectively provided along the length of the threshold reinforcement plate.

[0017] As a further implementation, the structurally reinforced adhesive block includes a skeleton with buckles connected to both ends, and the skeleton is injection molded with epoxy resin material.

[0018] As a further implementation, the frame is provided with a drainage groove, an exhaust hole, and a welding clamp through hole.

[0019] Secondly, embodiments of the present invention also provide a vehicle body having the aforementioned vehicle sill structure.

[0020] As a further implementation, the structural reinforcement block is snapped onto the vehicle body via clips, and the epoxy resin material in the structural reinforcement block foams during the coating electrophoresis drying process, so that the skeleton, epoxy resin material and vehicle body are connected as a whole.

[0021] The beneficial effects of this invention are as follows:

[0022] (1) A first through hole is opened on the upper side of the inner sill plate of the present invention, and a first electrophoresis channel and a second electrophoresis channel are provided on the structural reinforcement adhesive block. A second through hole is opened on the upper side of the sill reinforcement plate. The first through hole, the first electrophoresis channel, the second electrophoresis channel and the second through hole form a first channel path for electrophoresis liquid and electric field. A third through hole is opened on the lower side of the sill reinforcement plate, and a third electrophoresis channel is provided on the structural reinforcement adhesive block. The third through hole, the third electrophoresis channel and the second through hole form a second channel path for electrophoresis liquid and electric field. Through the above channel path, the adverse effects of using structural reinforcement adhesive block on electrophoresis can be avoided, and the electrophoresis film thickness can reach the standard requirements within a limited time when the car body passes through the electrophoresis tank, thereby meeting the anti-corrosion performance.

[0023] (2) The first electrophoresis channel and the second electrophoresis channel of the present invention are located at the middle position of the structural reinforcement block. The first electrophoresis channel and the second electrophoresis channel have different structural forms, which fully considers the moldability of the structural reinforcement block during the injection molding process and facilitates manufacturing. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This is an exploded view of the threshold structure according to one or more embodiments of the present invention;

[0026] Figure 2 This is a front view of the structural reinforcement adhesive block according to one or more embodiments of the present invention;

[0027] Figure 3 This is an isometric view of the structurally reinforced adhesive block according to one or more embodiments of the present invention;

[0028] Figure 4 This is a schematic diagram of the threshold section according to one or more embodiments of the present invention. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the threshold section according to one or more embodiments of the present invention. Figure 2 .

[0030] Among them, 1. Inner sill plate, 2. Structural reinforcement block, 3. Sill reinforcement plate, 4. Buckle, 5. Second electrophoresis channel, 6. First electrophoresis channel, 7. Outer side panel, 8. Third electrophoresis channel. Detailed Implementation

[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0032] Example 1:

[0033] In a typical embodiment of the present invention, such as Figures 1-5 As shown, a vehicle body door sill structure is presented.

[0034] Because the addition of the structural reinforcement block 2 affects the normal flow and radiation of the electrophoretic liquid and electromagnetic field, the cavity film thickness formed by the sill reinforcement plate 3 and the side outer panel 7 is relatively low, affecting the anti-corrosion performance. Based on this, this embodiment provides a vehicle sill structure, in which the inner sill plate 1, the structural reinforcement block 2, and the sill reinforcement plate 3 are designed with corresponding structures to form a smooth channel path for the electrophoretic liquid and electromagnetic field, so that the electrophoretic liquid and electromagnetic field can smoothly enter between the side outer panel 7 and the sill reinforcement plate 3, and successfully complete the electrophoretic film coating.

[0035] The above-mentioned vehicle door sill structure will now be described in detail with reference to the accompanying drawings.

[0036] The vehicle sill structure of this embodiment includes an inner sill plate 1, a structural reinforcement block 2, and a sill reinforcement plate 3. The structural reinforcement block 2 is disposed in the cavity formed by the inner sill plate 1 and the sill reinforcement plate 3, i.e., the inner sill cavity. A side panel 7 is installed on the outside of the sill reinforcement plate 3, and the side panel 7 and the sill reinforcement plate 3 form an outer sill cavity.

[0037] like Figure 2 and Figure 3 As shown, the structural reinforcement block 2 includes a skeleton and clips 4 installed at both ends of the skeleton. The clips 4 are used to fit into slots on the vehicle body. The clips 4 and the skeleton are integrally injection molded, and the epoxy resin material and the skeleton are formed by a secondary injection molding process. Since the structural reinforcement block 2 is sandwiched between the inner sill plate 1 and the sill reinforcement plate 3, the epoxy resin material in the structural reinforcement block 2 can foam during the coating electrophoresis drying process, thereby connecting the skeleton, the epoxy resin material and the vehicle body steel plate into a whole.

[0038] The frame is equipped with a drain tank to drain liquids from the pre-painting treatment and electrophoresis tanks, preventing cross-contamination. The frame is also equipped with vent holes to discharge gases generated during the pre-painting treatment and electrophoresis tanks, preventing gas accumulation. In addition, the frame is equipped with welding clamp through holes to provide space for the process welding clamps, ensuring that welding points on the body steel plates are weldable.

[0039] In this embodiment, the skeleton is made of PA6 material.

[0040] A first electrophoresis channel 6 and a second electrophoresis channel 5 are provided at the upper center of the structural reinforcing adhesive block 2. The first electrophoresis channel 6 and the second electrophoresis channel 5 are spaced apart along the length of the structural reinforcing adhesive block 2. The first electrophoresis channel 6 is a groove structure, which is opened to a certain depth along the top surface of the structural reinforcing adhesive block 2. The second electrophoresis channel 5 is a through-hole structure, which is opened through the width of the structural reinforcing adhesive block 2. This is because if both are groove structures, it will affect the strength of the structural reinforcing adhesive block 2. In order to achieve electrophoresis while meeting the strength requirements, a combination of through-hole and groove structures is adopted.

[0041] In this embodiment, the cross-sectional shape of the second electrophoresis channel 5 is circular.

[0042] The structural reinforcement block 2 is also provided with a third electrophoresis channel 8 on the lower side. The electrophoresis is satisfied by the cooperation of the two electrophoresis channels on the upper side and the one electrophoresis channel on the lower side, which is more efficient and has better impact resistance.

[0043] like Figure 4 and Figure 5 As shown, the threshold reinforcement plate 3 is formed by multiple segments into a stepped shape. Specifically, the two ends of the threshold reinforcement plate 3 are vertical plate structures to fit tightly with the inner plate 1 of the threshold. In addition to the vertical plate structures at both ends, the threshold reinforcement plate 3 includes a first side wall, a second side wall, a third side wall, a fourth side wall and a fifth side wall connected sequentially from top to bottom. The first side wall has a second through hole and a certain slope to facilitate electrophoresis flow.

[0044] The second and fourth side walls are vertical sections, while the third and fifth side walls are inclined sections. The inclination direction of the third side wall is the same as that of the first side wall, and the inclination direction of the fifth side wall is opposite to that of the first side wall, so that the threshold reinforcement plate 3 forms an overall wrapping structure on the outside of the structural reinforcement block 2.

[0045] The shape of the outer side panel 7 is adapted to the sill reinforcement plate 3, and it is also set as a stepped structure. One end of it is attached to the connecting end of the inner sill panel 1 and the sill reinforcement plate 3, and the other end is attached to the fourth side wall of the sill reinforcement plate 3. The inner sill panel 1 is a box-shaped structure.

[0046] like Figure 4 As shown, a first through hole is opened on the upper side of the inner sill plate 1, and a second through hole is opened on the upper side of the sill reinforcement plate 3. Multiple first through holes are provided along the length direction of the inner sill plate 1, and multiple second through holes are provided along the length direction of the sill reinforcement plate 3; the specific arrangement depends on the sill structure dimensions.

[0047] The second through hole is connected to the first through hole via the first electrophoresis channel 6 and the second electrophoresis channel 5. That is, the first through hole, the first electrophoresis channel 6, the second electrophoresis channel 5 and the second through hole form the first channel path of electrophoretic liquid and electric field. The electrophoretic liquid enters the inner cavity of the threshold through the first through hole and the first electrophoresis channel 6, and then enters the outer cavity of the threshold through the second through hole. At the same time, the electric field lines also enter through the first channel path, so that the electrophoretic paint film adheres to the sheet metal and ensures the thickness of the electrophoretic film in the outer cavity of the threshold.

[0048] like Figure 5 As shown, the sill reinforcement plate 3 has a third through hole corresponding to the third electrophoresis channel 8. Multiple third through holes are located on the lower side of the sill reinforcement plate 3 along its length. The third through hole, the third electrophoresis channel 8, and the second through hole form a second channel path for the electrophoretic liquid and electric field. When the vehicle body passes through the electrophoresis tank, the electrophoretic liquid enters the inner cavity of the sill through the third through hole and the third electrophoresis channel 8, and then enters the outer cavity of the sill through the second through hole. By coordinating the first and second channel paths, the adverse effects of the structural reinforcement block 2 on electrophoresis can be avoided, ensuring that the electrophoretic film thickness reaches the standard requirements within a limited time after the vehicle body passes through the electrophoresis tank, thus meeting the anti-corrosion performance requirements.

[0049] In this embodiment, an electrophoresis channel is provided on the structural reinforcement block 2, and through holes are opened at corresponding positions of the inner sill plate 1 and the sill reinforcement plate 3. The moldability of the structural reinforcement block 2 during the injection molding process is fully considered, which is conducive to manufacturing.

[0050] This embodiment mainly achieves the cavity film thickness formed by the outer side panel 7 and the sill reinforcement plate 3 through two channel paths. One is to open a hole in the inner sill plate 1, design an electrophoresis channel on the structural reinforcement adhesive block 2, and open a hole in the sill reinforcement plate 3 to form a smooth entry channel for electrophoretic liquid and electric field. The other is to open a hole in the sill reinforcement plate 3, design a corresponding electrophoresis channel on the structural reinforcement adhesive block 2, and open a hole in the sill reinforcement plate 3 to form a smooth entry channel for electrophoretic liquid and electric field. Through the above two channel paths, the electrophoretic film thickness of the outer cavity of the sill can be increased to meet the anti-corrosion performance standard requirements.

[0051] Example 2:

[0052] This embodiment provides a vehicle body with the vehicle body sill structure described in Embodiment 1. The structural reinforcement block 2 is snapped onto the vehicle body by a buckle 4. The epoxy resin material in the structural reinforcement block 2 foams during the coating electrophoresis drying process, so that the frame, epoxy resin material and vehicle body are connected as a whole.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle sill structure, characterized in that, It includes an inner sill plate, a structural reinforcement block, and a sill reinforcement plate, wherein the structural reinforcement block is disposed within the cavity formed by the inner sill plate and the sill reinforcement plate; The upper side of the inner sill plate has a first through hole, the structural reinforcement adhesive block has a first electrophoresis channel and a second electrophoresis channel, and the upper side of the sill reinforcement plate has a second through hole. The first through hole, the first electrophoresis channel, the second electrophoresis channel and the second through hole form a first channel path for electrophoretic liquid and electric field; the first electrophoresis channel is a groove structure, and the second electrophoresis channel is a through hole structure that penetrates the width direction of the structural reinforcement adhesive block. A third through hole is opened on the lower side of the threshold reinforcement plate, and a third electrophoresis channel is set in the structural reinforcement adhesive block corresponding to the third through hole. The third through hole, the third electrophoresis channel and the second through hole form a second channel path for electrophoretic liquid and electric field.

2. The vehicle sill structure according to claim 1, characterized in that, The first electrophoresis channel and the second electrophoresis channel are located in the middle of the structural reinforcement adhesive block, and the first electrophoresis channel and the second electrophoresis channel are arranged sequentially along the length of the structural reinforcement adhesive block.

3. A vehicle sill structure according to claim 1, characterized in that, A side panel is installed on the outside of the threshold reinforcement plate, and a threshold cavity is formed between the side panel and the threshold reinforcement plate. In the first channel path and the second channel path, the electrophoretic liquid and the electric field enter the outer cavity of the threshold through the second through hole.

4. A vehicle sill structure according to claim 1 or 3, characterized in that, The threshold reinforcement plate has a stepped structure, and the second through hole has a set slope at its opening position.

5. A vehicle sill structure according to claim 1, characterized in that, Multiple first through holes are provided along the length direction of the inner sill plate; Multiple second and third through holes are respectively provided along the length of the threshold reinforcement plate.

6. A vehicle sill structure according to claim 1, characterized in that, The structurally reinforced rubber block includes a skeleton with buckles connected to both ends, and the skeleton is injection molded with epoxy resin material.

7. A vehicle sill structure according to claim 6, characterized in that, The frame is equipped with a drainage channel, an exhaust port, and a welding clamp through hole.

8. A vehicle body, characterized in that, It has a vehicle door sill structure as described in any one of claims 1-7.

9. A vehicle body according to claim 8, characterized in that, The structural reinforcement block is snapped onto the vehicle body via clips. The epoxy resin material in the structural reinforcement block foams during the coating electrophoresis drying process, so that the skeleton, epoxy resin material and vehicle body are connected as a whole.

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