A new energy vehicle underbody protection plate

Abstract

This utility model discloses a new energy vehicle underbody protection plate, specifically relating to the field of automotive parts technology. The underbody protection plate is installed on the chassis of a new energy vehicle, including a protection plate frame. A protection plate groove is formed on the frame, and a lower protection plate is installed within the groove. A support roller is movably connected to the bottom of the lower protection plate. A fixing groove is formed at both ends of the groove, and a fixing plate is installed within each groove. The fixing plate is fixedly connected to the end of the lower protection plate by bolts. A honeycomb protection plate is fixedly connected to the top of the lower protection plate. A roller groove is formed at the bottom of the lower protection plate, and a support roller is installed within it. A fixing groove is formed at both ends of the roller groove, and a fixing block is installed within each groove. The end of the support roller is rotatably connected to the fixing block, which is bolted to the fixing groove. This utility model solves the technical problems of high maintenance costs and short lifespan of underbody protection plates.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and more specifically, to a new energy vehicle underbody protection plate. Background Technology

[0002] New energy vehicles refer to those that use unconventional vehicle fuels as their power source (or use conventional vehicle fuels but employ new onboard power devices), integrating advanced technologies in vehicle power control and drive. The underbody protection plate of an electric vehicle is an indispensable "skeleton" of the chassis protection system. It silently undertakes the important tasks of fixing and supporting the vehicle, and transmitting and dispersing impact forces, directly affecting the safety of the battery pack, the protective effect of the underbody protection plate, and the vehicle's NVH performance. Its design requires a delicate balance between strength, lightweight, corrosion resistance, maintainability, and cost. In the event of chassis bottoming out or a collision, checking the integrity of the underbody protection plate is an essential step.

[0003] Currently, the design of underbody protection plates for new energy vehicles mainly utilizes stamping technology for one-piece molding. While one-piece molding increases production speed and reduces unit costs, the replacement of the entire underbody protection plate increases maintenance costs for vehicle owners when irreparable damage occurs in a localized area. In addition, when the underbody protection plate scrapes against the ground, it experiences sliding friction with protruding objects, which leads to significant wear and tear and easily reduces the lifespan of the protection plate.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide a new energy vehicle underbody protection plate, in order to achieve a more practical purpose. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that addresses the high maintenance costs and short lifespan of bottom guard plates.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a new energy vehicle underbody protection plate, which is installed on the chassis of a new energy vehicle, characterized in that: it includes a protection plate frame, a protection plate groove is provided on the protection plate frame, a lower protection plate is provided in the protection plate groove, and a support roller is movably connected to the bottom of the lower protection plate.

[0007] In a preferred embodiment, a fixing groove is provided at both ends of the guard plate groove, and a fixing plate is provided in the fixing groove. The fixing plate is fixedly connected to the end of the lower guard plate and is connected to the fixing groove by bolts.

[0008] In a preferred embodiment, a honeycomb protective plate is fixedly connected to the top of the lower protective plate.

[0009] In a preferred embodiment, the bottom of the lower guard plate is provided with a roller groove, the support roller is disposed in the roller groove, and both ends of the roller groove are provided with a fixing groove II. A fixing block is disposed in the fixing groove II, and the end of the support roller is rotatably connected to the fixing block. The fixing block is connected to the fixing groove II by bolts.

[0010] In a preferred embodiment, the support roller is hollow, and the inner wall of the support roller is fixedly connected with reinforcing ribs.

[0011] In a preferred embodiment, the surface of the support roller is coated with a tungsten carbide alloy coating.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This new energy vehicle underbody protection plate, by setting multiple detachable lower protection plates on the protection plate frame, the honeycomb protection plate can strengthen the structural strength of the lower protection plate by dispersing impact stress and improve the durability of the lower protection plate. Since the entire underbody protection plate is assembled into a whole, the independent replacement of the lower protection plate can reduce the maintenance cost of the entire vehicle underbody protection plate.

[0014] 2. This new energy vehicle underbody protection plate features rotatable support rollers at its bottom. When the underbody protection plate gets stuck, the support rollers preferentially contact the stuck protrusions. The support rollers can relieve the stuck force through rolling friction, thus reducing the impact force and improving durability. Furthermore, since the support rollers are detachably connected to the underbody protection plate, the maintenance cost of the vehicle underbody protection plate can be further reduced. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A bottom view;

[0018] Figure 3 This is a schematic diagram of the structure of the protective plate frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the lower guard plate of this utility model;

[0020] Figure 5 This utility model Figure 4 A bottom view;

[0021] Figure 6 This is a schematic diagram of the structure of the support roller column of this utility model;

[0022] Figure 7 This is a planar sectional view of the support roller of this utility model.

[0023] The attached diagram is labeled as follows: 1. Guard plate frame; 2. Guard plate groove; 21. Fixing groove one; 3. Lower guard plate; 4. Honeycomb guard plate; 5. Support roller column; 51. Reinforcing rib; 52. Tungsten carbide alloy coating; 6. Fixing plate; 7. Roller groove; 8. Fixing groove two; 9. Fixing block. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See also Figures 1-7 This utility model provides a new energy vehicle underbody protection plate, which is installed on the chassis of the new energy vehicle. It includes a protection plate frame 1, which has multiple mounting holes for installation on the chassis of the new energy vehicle by bolts. The protection plate frame 1 can be installed on the outside of the battery pack at the corresponding chassis position. The specific shape of the protection plate frame 1 can be set according to the design requirements of the chassis.

[0026] In this embodiment: a guard plate groove 2 is provided on the guard plate frame 1, and a lower guard plate 3 is provided in the guard plate groove 2.

[0027] In this application, there are multiple guard plate grooves 2, and the number of lower guard plates 3 corresponds to the number of guard plate grooves 2. Multiple lower guard plates 3 are set on the guard plate frame 1 along the length direction of the new energy vehicle. By assembling multiple lower guard plates 3 separately on the guard plate frame 1, if one of the lower guard plates 3 is damaged, the lower guard plate 3 at that position can be replaced independently. This can reduce the maintenance cost of the entire automotive parts. When the current automotive underbody guard plate is stamped and integrally formed and the local irreparable damage occurs, it is not necessary to replace the entire underbody guard plate, thus reducing the maintenance cost for vehicle users.

[0028] In this embodiment: both ends of the guard plate groove 2 are provided with fixing grooves 21, and fixing plates 6 are provided in fixing grooves 21. Fixing plates 6 are fixedly connected to the end of the lower guard plate 3 and are connected to fixing grooves 21 by bolts.

[0029] In this application, the guard plate groove 2 is designed with an inverted "convex" shape, which makes it easy to embed the fixing plate 6. The fixing plate 6 is provided with a countersunk groove, which can hide the position of the bolt. The inner wall of the fixing groove 21 is provided with a threaded groove for threaded connection with the bolt. The fixing plate 6 is connected to the guard plate frame 1 by bolts, which makes it easy to assemble the lower guard plate 3 into the guard plate groove 2. Because the lower guard plate 3 is easy to install, it can be easily repaired and replaced independently, reducing the cost of parts.

[0030] It is worth noting that since there are multiple lower guard plates 3, the length of the lower guard plates 3 at different positions will vary depending on the shape and type of the guard plate frame 1.

[0031] In this embodiment, a honeycomb protective plate 4 is fixedly connected to the top of the lower protective plate 3.

[0032] The honeycomb protective plate 4, the protective plate frame 1, and the lower protective plate 3 are all made of aluminum alloy. The purpose of the fixed connection between the honeycomb protective plate 4 and the lower protective plate 3 is to use the honeycomb plate structure design of the honeycomb protective plate 4 to disperse stress, so as to significantly reduce the weight of the honeycomb protective plate 4 and the lower protective plate 3, while improving the structural strength, thus improving the impact resistance.

[0033] In this embodiment: the bottom of the lower guard plate 3 is movably connected to a support roller 5, the support roller 5 is hollow, and the inner wall of the support roller 5 is fixedly connected to a reinforcing rib 51.

[0034] The support roller 5 has a hollow internal structure with solid ends. The support roller 5 is made of steel-plastic composite material, which combines the strength of metal with the lightness of plastic. The position of the reinforcing rib 51 can be used to improve the support strength of the inner cavity of the support roller 5 and prevent the support roller 5 from deforming. The hollow design of the support roller 5 can reduce the overall weight.

[0035] In this embodiment, the surface of the support roller 5 is coated with a tungsten carbide alloy coating 52.

[0036] The tungsten carbide alloy coating 52 can improve the wear resistance of the support roller 5 and ensure the durability of the support roller 5 when it comes into contact with foreign objects and is subjected to friction.

[0037] In this embodiment: a roller groove 7 is provided at the bottom of the lower guard plate 3, the support roller 5 is set in the roller groove 7, and a fixing groove 8 is provided at both ends of the roller groove 7. A fixing block 9 is provided in the fixing groove 8, and the end of the support roller 5 is rotatably connected to the fixing block 9. The fixing block 9 is connected to the fixing groove 8 by bolts.

[0038] The support roller 5 can be rotatably connected to the fixed block 9 via a rotating shaft. The support roller 5 is set at the bottom of the lower guard plate 3, facing away from the vehicle chassis, and protrudes from the lower guard plate 3. Multiple support rollers 5 are arranged in at least two pairs laterally along the length of the new energy vehicle. When the bottom guard plate gets stuck, the support roller 5 can preferentially contact the ground protrusion. When the support roller 5 moves into contact with the protrusion, it can rotate on the fixed block 9. The support roller 5 achieves friction relief through rolling friction. Compared with the traditional sliding friction between the bottom guard plate and the stuck object, this can reduce wear and improve structural durability. This solves the problem that when the bottom guard plate gets stuck, the sliding friction between the bottom guard plate and the ground protrusion causes high wear and easily reduces the service life of the guard plate.

[0039] The fixing block 9 is also provided with a countersunk groove, and the inner wall of the roller groove 7 is also provided with mounting holes for bolt connection. The fixing block 9 is installed in the fixing groove 8 using bolts, so that the support roller 5 can be easily disassembled for maintenance and replacement, reducing maintenance costs.

Claims

1. A new energy vehicle under protection plate arranged on a chassis of a new energy vehicle, characterized in that: It includes a guard plate frame (1), on which a guard plate groove (2) is provided, and a lower guard plate (3) is provided in the guard plate groove (2), and a support roller (5) is movably connected to the bottom of the lower guard plate (3).

2. The underbody shield of claim 1, wherein: The guard plate groove (2) has a fixing groove (21) at both ends. A fixing plate (6) is provided in the fixing groove (21). The fixing plate (6) is fixedly connected to the end of the lower guard plate (3). The fixing plate (6) is connected to the fixing groove (21) by bolts.

3. The underbody shield of claim 1, wherein: A honeycomb protective plate (4) is fixedly connected to the top of the lower protective plate (3).

4. The underbody shield of claim 1, wherein: The bottom of the lower guard plate (3) is provided with a roller groove (7), the support roller (5) is set in the roller groove (7), and both ends of the roller groove (7) are provided with a fixing groove (8). A fixing block (9) is provided in the fixing groove (8). The end of the support roller (5) is rotatably connected to the fixing block (9), and the fixing block (9) is connected to the fixing groove (8) by bolts.

5. The underbody shield of claim 1, wherein: The support roller (5) is hollow, and the inner wall of the support roller (5) is fixedly connected with reinforcing ribs (51).

6. The underbody shield of claim 1, wherein: The surface of the support roller (5) is coated with a tungsten carbide alloy coating (52).

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