Heavy duty truck rear quarter panel outer panel

Abstract

The utility model discloses a heavy load car rear apron outer plate, including outer plate main part, the main section of outer plate main part is Z type, be provided with a plurality of reinforcing bars and a plurality of weight reduction holes on the outer plate main part, the outer plate main part has the connecting flanging, the connecting flanging is used for with rear apron inner plate welding to form box -like structure, the connecting flanging includes the front bending section, the middle part horizontal section and the rear bending section that set gradually from front to back. The utility model discloses the main section of outer plate main part adopts Z type design, this structure can effectively disperse stress, avoid stress concentration, significantly promoted the strength of outer plate itself, when with rear apron inner plate welding, the lap joint edge of Z type outer plate and inner plate constitutes the closed or semi -closed box -like structure together, this structure greatly enhanced the torsional rigidity of car body, when the vehicle turns or travels in the rugged road, the box -like structure can provide strong torsional resistance, ensure that the car body is stable, reduce the distortion of distortion, thereby promote the control security.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and in particular relates to the outer panel of the rear skirt of heavy-duty vehicles. Background Technology

[0002] Heavy-duty vehicles often travel in complex road conditions. Their rear skirt panels not only bear their own weight, but are also subjected to various external forces such as road bumps, flying stones, high-speed airflow, and possible collisions.

[0003] Traditional rear skirt panels are mostly flat or simply bent structures, which have problems such as stress concentration, insufficient torsional stiffness, easy deformation and damage, poor drainage, and excessive weight. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by proposing the following technical solution: The rear skirt outer panel of a heavy-duty vehicle includes an outer panel body, the main cross-section of which is Z-shaped; the outer panel body is provided with several reinforcing ribs and several weight-reducing holes; the outer panel body has a connecting flange, which is used to weld with the rear skirt inner panel to form a box-shaped structure; the connecting flange includes a front curved section, a middle horizontal section and a rear curved section arranged sequentially from front to back; drainage ribs are provided at the corners between the front curved section, the middle horizontal section, the rear curved section and the outer panel body; the drainage rib includes a first recessed portion that is recessed inward and downward into the outer panel body and a second recessed portion that is recessed inward into the connecting flange, the first recessed portion and the second recessed portion being interconnected.

[0005] As a preferred embodiment of the above technical solution, the connecting flange further includes an outer lip and an inner lip, and a drainage channel is formed between the outer lip and the first recess and between the inner lip and the second recess.

[0006] As a preferred embodiment of the above technical solution, the reinforcing ribs are distributed in the edge area of ​​the outer panel body, the connection area with other components, and the area susceptible to airflow impact.

[0007] As a preferred embodiment of the above technical solution, the weight-reducing holes are opened in a large, flat area on the outer panel body where the stress level is low.

[0008] As a preferred embodiment of the above technical solution, the outer panel body is made of high-strength steel or aluminum alloy.

[0009] As a preferred embodiment of the above technical solution, at least a portion of the reinforcing ribs are independent components made of stainless steel and are fixed to the outer plate body by connectors.

[0010] The beneficial effects of this utility model are as follows: In this application, the main cross-section of the outer panel adopts a Z-shaped design. This structure can effectively disperse stress, avoid stress concentration, and significantly improve the strength of the outer panel itself. When welded with the inner panel of the rear skirt, the overlapping edge of the Z-shaped outer panel and the inner panel together form a closed or semi-closed box structure. This structure greatly enhances the torsional rigidity of the vehicle body. When the vehicle turns or drives on rough roads, the box structure can provide strong torsional resistance, ensure vehicle body stability, reduce torsional deformation, and thus improve handling safety. By rationally arranging reinforcing ribs in stress concentration areas (such as edges and connection points) on the outer panel, it is as if adding a "skeleton" to the outer panel, effectively enhancing the strength of key areas and optimizing the force transmission path; at the same time, by cleverly setting weight-reduction holes in large flat areas with low stress levels, effective weight reduction is achieved while ensuring overall strength and rigidity, reducing material costs and vehicle energy consumption. By setting drainage ribs connected by the first and second recesses at each corner of the connecting flange, and forming an effective drainage channel, water entering the vicinity of the rear door frame sealing strip (including water between the clamp teeth and the inner lip) can be quickly and directly guided and discharged without first collecting in the middle horizontal section, which greatly improves drainage efficiency and effectively prevents water from entering the vehicle and corrosion of parts. The outer panel is made of high-strength steel or aluminum alloy. The former provides extremely high strength and durability, while the latter achieves significant weight reduction and excellent corrosion resistance while ensuring sufficient strength. In addition, high-performance materials such as stainless steel are used to make reinforcing ribs in key parts, and combined with lower-cost main body materials, the best balance between performance and cost is achieved. Reliable connection technology ensures the integrity of the overall structure. Attached Figure Description

[0011] Figure 1 The diagram shown is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 The diagram shown is a side view of the three-dimensional structure provided by an embodiment of the present invention.

[0012] Legend: 1. Outer panel main body; 2. Reinforcing rib; 3. Weight reduction hole; 4. Connecting flange; 41. Front bending section; 42. Middle horizontal section; 43. Rear bending section; 5. Drainage rib; 51. First recessed part; 52. Second recessed part; 6. Outer lip; 7. Inner lip; 8. Drainage channel; 9. Rear skirt inner panel. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0014] This application overcomes the shortcomings of the prior art and provides a heavy-duty automobile rear skirt outer panel with high structural strength, good torsional performance, light weight, and excellent drainage effect.

[0015] like Figure 1 and Figure 2 As shown in this embodiment of the present invention, the outer panel of the rear skirt of the heavy-duty vehicle includes an outer panel body 1, on which a plurality of reinforcing ribs 2 are formed by stamping or other forming processes. These reinforcing ribs 2 are not uniformly distributed, but are arranged in a focused manner at the edges of the outer panel body 1, at the connection points with other components such as the frame and bumper, and in areas that are prone to frontal impact from airflow during high-speed driving, based on stress analysis. This arrangement strengthens weak points and guides external forces to be effectively transmitted and dispersed along the reinforcing ribs 2. At the same time, a plurality of weight-reducing holes 3 are provided in a large flat area with a relatively low stress level on the outer panel body 1. The shape, size and arrangement of the weight-reducing holes 3 are precisely calculated to ensure that while removing material to reduce weight, no new stress concentration or significant reduction in stiffness is caused.

[0016] The outer panel body 1 is provided with connecting flanges 4 around its perimeter. These connecting flanges 4 are used to fix and connect with the rear skirt inner panel 9 by welding or other means. After the Z-shaped outer panel body 1 is combined with the relatively straight or corresponding rear skirt inner panel 9, their overlapping boundaries together form one or more box-shaped structures. This closed or semi-closed cross-sectional form can greatly improve the stability of the component when subjected to torsional torque.

[0017] The connecting flange 4 is specifically composed of a front curved section 41, a middle horizontal section 42, and a rear curved section 43 connected sequentially from front to back. At the corners where these sections meet the outer panel body 1, there are inwardly recessed drainage ribs 5. Each drainage rib 5 includes two main parts: a first recessed part 51 that is recessed inward and downward into the outer panel body 1, and a second recessed part 52 that is recessed inward into the connecting flange 4 itself. The first recessed part 51 and the second recessed part 52 are interconnected to form a continuous guide channel.

[0018] Furthermore, the connecting flange 4 typically includes an outer lip 6 and an inner lip 7; drainage channels 8 are naturally formed between the outer lip 6 and the side wall of the first recess 51, and between the inner lip 7 and the side wall of the second recess 52; when water enters the interior of the rear door frame sealing strip, especially when it accumulates between the clip teeth and the inner lip 7, the water will flow along these drainage channels 8 into the guide groove formed by the first recess 51 and the second recess 52, and finally be quickly discharged from the sides or rear of the vehicle, thus avoiding water accumulation.

[0019] In terms of material selection, the outer panel body 1 can preferably be made of high-strength steel with a yield strength of more than 250MPa, or high-strength aluminum alloys such as 6000 series or 7000 series; in order to obtain ultimate performance in key parts and control costs, some or all of the reinforcing ribs 2 can be made of stainless steel and then firmly fixed to the corresponding positions of the outer panel body 1 by means of laser welding, riveting or bolt connection.

[0020] This invention significantly improves the overall performance of the rear skirt outer panel of heavy-duty vehicles through the combined effects of a Z-shaped cross-section, optimized layout of reinforcing ribs and weight-reducing holes, efficient drainage system, and reasonable material application.

[0021] Working principle Its unique Z-shaped cross-section structure, optimized layout of reinforcing ribs and weight-reducing holes, and efficient drainage system work together to achieve this.

[0022] When the vehicle is in motion, in terms of mechanical performance, the Z-shaped cross-section structure, as the core load-bearing skeleton, can effectively decompose and redistribute external forces such as impact forces from the road surface, torsional loads from the vehicle body, and high-speed aerodynamic pressure along its tortuous contour, avoiding stress peaks in local areas, thereby significantly improving the stiffness and deformation resistance of the outer panel body 1 itself.

[0023] In particular, when the outer rear skirt panel is welded to the inner rear skirt panel 9 via its connecting flange 4, the two together form a closed or semi-closed box-shaped structure. This structure provides extremely strong torsional stiffness when the vehicle is turning or driving on uneven roads, resisting the torsional deformation of the vehicle body, and transforming the local concentrated force into the overall internal force of the entire box-shaped structure, greatly enhancing the structural stability and integrity of the vehicle body.

[0024] In terms of local reinforcement and weight reduction, the reinforcing ribs 2 arranged in key areas such as edges and connection points play a supporting role similar to "ribs", further guiding and dispersing the stress flow to the connecting flange 4, preventing cracking or permanent deformation caused by excessive local stress; at the same time, the weight reduction holes 3 set in non-critical stress areas accurately remove redundant materials while ensuring the integrity of the overall structure, achieving effective weight reduction.

[0025] In terms of drainage, its innovative drainage structure ensures that water entering the tailgate frame sealing strip area can be quickly drained during rain or car washes.

[0026] Specifically, the accumulated water flows along the drainage channel 8 formed between the outer lip 6 and the first recess 51, and between the inner lip 7 and the second recess 52, and flows into the guide channel formed by the connection of the first recess 51 and the second recess 52.

[0027] Because such drainage ribs 5 are provided at the corners of the front curved section 41, the middle horizontal section 42 and the rear curved section 43 with the main body 1, the water flow does not need to travel a long distance to collect at the lowest point, but can be distributed in multiple locations.

[0028] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A rear skirt panel for heavy-duty vehicles, comprising a main body (1), characterized in that: The main cross section of the outer panel body (1) is Z-shaped; the outer panel body (1) is provided with several reinforcing ribs (2) and several weight-reducing holes (3); the outer panel body (1) has a connecting flange (4); the connecting flange (4) includes a front bending section (41), a middle horizontal section (42) and a rear bending section (43) arranged sequentially from front to back; drainage ribs (5) are provided at the corners between the front bending section (41), the middle horizontal section (42), the rear bending section (43) and the outer panel body (1); the drainage rib (5) includes a first recess (51) that is recessed inward and downward into the outer panel body (1) and a second recess (52) that is recessed inward into the connecting flange (4), and the first recess (51) and the second recess (52) are interconnected.

2. The heavy-duty vehicle rear skirt outer panel according to claim 1, characterized in that, The connecting flange (4) also includes an outer lip (6) and an inner lip (7), and a drainage channel (8) is formed between the outer lip (6) and the first recess (51) and between the inner lip (7) and the second recess (52).

3. The outer panel of the rear skirt of a heavy-duty vehicle according to claim 1, characterized in that, The reinforcing ribs (2) are distributed in the edge area of ​​the outer plate body (1) and the connection area with other components.

4. The heavy-duty vehicle rear skirt outer panel according to claim 1, characterized in that, The weight reduction hole (3) is opened in a large flat area of ​​the outer panel body (1).

5. The outer panel of the rear skirt of a heavy-duty vehicle according to claim 1, characterized in that, At least a portion of the reinforcing ribs (2) are independent components fixed to the outer plate body (1) by connectors.

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