Underfloor panel mold forming structure, underfloor panel structure, and vehicle

Abstract

This utility model discloses a bottom guard plate mold forming structure, a bottom guard plate structure, and a vehicle. The bottom guard plate mold forming structure includes a bottom guard plate body integrally connected to the vehicle and multiple reinforcing pads. Multiple connecting recesses are spaced apart on the bottom guard plate body, each protruding from the bottom guard plate body along a first direction. Each reinforcing pad is connected to the perimeter of the bottom guard plate body via connecting pieces, and the number of reinforcing pads is not less than the number of connecting recesses. The bottom guard plate structure includes a bottom guard plate body and multiple connecting recesses spaced apart on the bottom guard plate body, each connecting recess protruding from the bottom guard plate body along a first direction, and each connecting recess is provided with a reinforcing pad. The vehicle includes a chassis and the aforementioned bottom guard plate structure. This utility model can reduce the difficulty of molding while ensuring the local strength of the connecting recesses.

Description

Technical Field

[0001] This utility model relates to vehicle protection structures, specifically to a bottom guard plate mold forming structure, a bottom guard plate structure, and a vehicle. Background Technology

[0002] With the continuous rise in consumer demand for low-energy-consumption vehicles, especially against the backdrop of the widespread adoption of electric vehicles, the importance of low energy consumption and long driving range has become increasingly prominent. Underbody protection plates, installed under the vehicle, are key components that combine aerodynamic optimization and functional protection. They not only effectively reduce wind resistance to improve driving range but also offer the dual benefits of protecting the chassis structure and enhancing the aesthetics of the vehicle's underside, making them an indispensable standard feature in modern vehicles. Underbody protection plates manufactured using injection molding or fiber composite material compression molding processes are widely used in the market due to their advantages such as short development cycles, low manufacturing costs, and significant lightweight effects. However, limited by material properties and molding processes, this type of protection plate is prone to cracking or detachment in localized areas at the installation point, a defect that is particularly pronounced in water-wading scenarios. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a bottom guard plate mold forming structure, a bottom guard plate structure and a vehicle, which can reduce the difficulty of molding while ensuring the local strength of the connecting platform.

[0004] The present invention discloses a bottom guard plate mold forming structure, comprising a bottom guard plate body connected as one piece and a plurality of reinforcing pads. The bottom guard plate body is provided with a plurality of connecting recesses at intervals, and the plurality of connecting recesses protrude from the bottom guard plate body along a first direction. Each of the reinforcing pads is connected to the periphery of the bottom guard plate body through connecting pieces, and the number of reinforcing pads is not less than the number of connecting recesses.

[0005] Furthermore, the connecting platform includes a conical ring portion and a connecting portion. The inner diameter of the conical ring portion gradually decreases along the first direction. One side of the conical ring portion is connected to the bottom protective plate body through a rounded corner transition, and the other side of the conical ring portion is connected to the connecting portion through a rounded corner transition.

[0006] Furthermore, the connecting part is provided with bolt through holes, and the reinforcing washer is provided with waist-shaped holes.

[0007] A bottom guard plate structure of the present invention includes a bottom guard plate body and a plurality of connecting recesses spaced apart on the bottom guard plate body. The plurality of connecting recesses protrude from the bottom guard plate body along a first direction, and each of the connecting recesses is provided with a reinforcing pad.

[0008] Furthermore, the connecting platform includes a conical ring portion and a connecting portion. The inner diameter of the conical ring portion gradually decreases along the first direction. One side of the conical ring portion is connected to the bottom protective plate body through a rounded corner transition, and the other side of the conical ring portion is connected to the connecting portion through a rounded corner transition.

[0009] Furthermore, the reinforcing pad is disposed on the side of the connecting portion facing the bottom protective plate body.

[0010] Furthermore, the reinforcing pad, the bottom protective plate body, and the connecting platform are made of the same material, and the reinforcing pad is connected to the connecting part by adhesive.

[0011] Furthermore, the connecting part is provided with bolt through holes, and the reinforcing washer is provided with waist-shaped holes.

[0012] One type of vehicle according to this utility model includes a chassis and the aforementioned underbody protection structure, wherein the underbody protection structure is detachably connected to the chassis.

[0013] Furthermore, the underbody protection plate structure is connected to the vehicle chassis via a threaded connection assembly, which includes bolts and pre-welded nuts, and the pre-welded nuts are welded to the vehicle chassis.

[0014] The beneficial effects of this utility model are: (1) The bottom guard plate mold forming structure in this utility model reduces the mold development and manufacturing costs by using the same mold tooling for the reinforcing gasket and the bottom guard plate body, thereby reducing the manufacturing cost of the bottom guard plate structure. After molding, the reinforcing gasket is cut off and then bonded to the connecting platform. While ensuring the local strength of the connecting platform, the thickness of the connecting platform is made uniform during molding, which reduces the difficulty of molding and prevents shrinkage stress and appearance defects caused by uneven local cooling rate of the connecting platform.

[0015] (2) The bottom guard plate structure in this utility model improves the local strength of the connecting platform by strengthening the shims, thereby ensuring the strength of the mounting point at the connection with the vehicle chassis, and thus effectively solving the problem of cracking or falling off the mounting point of the bottom guard plate structure when the vehicle is wading through water or traveling long distances due to insufficient strength of the bottom guard plate structure. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a bottom view schematic diagram of the bottom protective plate mold forming structure of this utility model; Figure 2 This is a bottom view of the reinforcing gasket of this utility model; Figure 3This is a bottom view schematic diagram showing the connection between the bottom guard plate structure of this utility model and the vehicle chassis; Figure 4 for Figure 3 Schematic diagram of AA section; Figure 5 This is a cross-sectional schematic diagram of the connection position between the connecting platform and the reinforcing pad of this utility model.

[0017] The following labels are used in the attached diagram: 1-Bottom guard plate body, 2-Connecting platform, 201-Conical ring part, 202-Connecting part, 203-Bolt through hole, 3-Reinforcing washer, 301-Oval hole, 4-Connecting piece, 5-Body chassis, 6-Bolt, 7-Pre-welded nut. Detailed Implementation

[0018] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] Example 1: like Figure 1 and Figure 2 As shown, a bottom guard plate mold forming structure in this embodiment includes a bottom guard plate body 1 integrally connected with multiple reinforcing pads 3. Multiple connecting recesses 2 are spaced apart on the bottom guard plate body 1, and each connecting recess 2 protrudes from the bottom guard plate body 1 along a first direction. Each reinforcing pad 3 is connected to the perimeter of the bottom guard plate body 1 via connecting pieces 4. The number of reinforcing pads 3 is not less than the number of connecting recesses 2. Preferably, the number of reinforcing pads 3 is equal to the number of connecting recesses 2; however, additional reinforcing pads 3 can be pre-set for later use.

[0020] The bottom guard plate molded structure is either a long-fiber PET composite material molded structural part or a one-piece injection molded plastic structural part. The manufacturing process of the long-fiber PET composite material molded structural part involves using long-fiber PET (polyethylene terephthalate) composite material as the reinforcing phase, and achieving efficient manufacturing of complex structural parts through compression molding. In this embodiment, the material of the long-fiber PET composite material molded structural part can be 1000 g / m², 1200 g / m², or 1400 g / m². The manufacturing process of the one-piece injection molded plastic structural part mainly includes six stages: mold closing, filling, pressure holding, cooling, mold opening, and demolding. In the filling stage, molten plastic is injected into the mold cavity; in the pressure holding stage, the melt is compacted to compensate for shrinkage; in the cooling stage, the plastic solidifies; and finally, the product is removed by demolding. In this embodiment, the wall thickness of the one-piece injection molded plastic structural part can be 2.0 mm-2.5 mm.

[0021] By sharing a mold tooling, the reinforcing pad 3 and the underbody plate body 1 are molded together. After molding, the reinforcing pad 3 is separated from the underbody plate body 1 from the connecting piece 4 position by using a gate trimming tool. Then, each reinforcing pad 3 is connected to the connecting part 202 of the connecting platform 2 by applying glue or applying double-sided tape to the surface, forming an underbody plate structure for connection with the vehicle chassis 5.

[0022] A preferred embodiment is that each reinforcing pad 3 is disposed at the edge of the bottom protective plate body 1 around each connecting recess 2. For example, in this embodiment, four connecting recesses 2 are spaced apart at the front of the bottom protective plate body 1 and five connecting recesses 2 are spaced apart at the rear. The four reinforcing pads 3 are located at the front of the bottom protective plate body 1, and the five reinforcing pads 3 are located at the rear of the bottom protective plate. This facilitates the separation and bonding of the reinforcing pads 3, reducing the labor intensity of workers. The dimensions of each connecting recess 2 may differ, therefore the specifications of each reinforcing pad 3 will also differ accordingly. The placement of each reinforcing pad 3 at the edge of the bottom protective plate body 1 around each connecting recess 2 also prevents incorrect installation by workers.

[0023] Sharing a mold tooling for the reinforcing shim 3 and the bottom guard plate body 1 reduces the development and manufacturing costs of the mold, thereby lowering the manufacturing cost of the bottom guard plate structure. After compression molding, the reinforcing shim 3 is cut off and then bonded to the connecting recess 2. This ensures the local strength of the connecting recess 2 while making the thickness of the connecting recess 2 uniform during compression molding, reducing the difficulty of compression molding and preventing shrinkage stress and appearance defects caused by uneven local cooling rates of the connecting recess 2.

[0024] In this embodiment, the connecting platform 2 includes a conical ring portion 201 and a connecting portion 202. The inner diameter of the conical ring portion 201 gradually decreases along a first direction. One side of the conical ring portion 201 is connected to the bottom protective plate body 1 through a rounded corner transition, and the other side of the conical ring portion 201 is connected to the connecting portion 202 through a rounded corner transition. The shape of the conical ring portion 201 and the rounded corners on both sides can further reduce the difficulty of injection molding.

[0025] In this embodiment, the connecting part 202 is provided with a bolt 6 through hole 203, and the reinforcing washer 3 is provided with a waist-shaped hole 301. The area of ​​the reinforcing washer 3 is smaller than the area of ​​the connecting part 202, and the diameter of the waist-shaped hole 301 is larger than the diameter of the bolt 6 through hole 203, which can reduce the precision requirements for bonding the reinforcing washer 3 to the connecting part 202.

[0026] Example 2: like Figures 3-5As shown, a bottom guard plate structure in this embodiment includes a bottom guard plate body 1 and a plurality of connecting recesses 2 spaced apart on the bottom guard plate body 1. Each of the connecting recesses 2 protrudes from the bottom guard plate body 1 along a first direction, and each connecting recess 2 is provided with a reinforcing pad 3. The first direction can be from below the vehicle to above the vehicle.

[0027] After separating the reinforcing pads 3 from the base plate body 1 using a gate trimming tool, the reinforcing pads 3 are connected to the connecting part 202 of the connecting platform 2 by applying adhesive or double-sided tape to the surface, thus forming the base plate structure for connecting to the vehicle chassis 5 in this embodiment.

[0028] After molding, the reinforcing shim 3 is cut off and then bonded to the connecting platform 2. The reinforcing shim 3 improves the local strength of the connecting platform 2, thereby ensuring the strength of the mounting point at the connection with the vehicle chassis 5. This effectively solves the problem of cracking or falling off of the mounting point of the underbody protection plate structure when the vehicle is wading through water or traveling long distances due to insufficient strength of the underbody protection plate structure.

[0029] In this embodiment, the connecting platform 2 includes a conical ring portion 201 and a connecting portion 202. The inner diameter of the conical ring portion 201 gradually decreases along a first direction. One side of the conical ring portion 201 is connected to the bottom protective plate body 1 through a rounded corner transition, and the other side of the conical ring portion 201 is connected to the connecting portion 202 through a rounded corner transition. The shape of the conical ring portion 201 and the rounded corners on both sides can further reduce the difficulty of injection molding.

[0030] In this embodiment, the reinforcing pad 3 is disposed on the side of the connecting portion 202 facing the bottom guard plate body 1. Specifically, the vehicle chassis 5 is disposed on the upper side of the bottom guard plate body 1, the connecting platform 2 protrudes upward from the bottom guard plate body 1, and the reinforcing pad 3 is disposed on the lower side of the connecting portion 202.

[0031] In this embodiment, the reinforcing pad 3, the bottom protective plate body 1, and the connecting recessed platform 2 are made of the same material, and the reinforcing pad 3 is connected to the connecting part 202 by adhesive. The reinforcing pad 3, the bottom protective plate body 1, and the connecting recessed platform 2 are obtained through the bottom protective plate mold forming structure of Embodiment 1. The bottom protective plate mold forming structure is a long-fiber PET composite material molded structural part or an integral injection molded plastic structural part. Therefore, the reinforcing pad 3, the bottom protective plate body 1, and the connecting recessed platform 2 are made of the same material, which are all long-fiber PET composite materials or plastics.

[0032] In this embodiment, the connecting part 202 is provided with a bolt 6 through hole 203, and the reinforcing washer 3 is provided with a waist-shaped hole 301. The area of ​​the reinforcing washer 3 is smaller than the area of ​​the connecting part 202, and the diameter of the waist-shaped hole 301 is larger than the diameter of the bolt 6 through hole 203, which can reduce the precision requirements for bonding the reinforcing washer 3 to the connecting part 202.

[0033] Example 3: A vehicle according to this embodiment includes a chassis 5 and the aforementioned underbody protection structure, wherein the underbody protection structure is detachably connected to the chassis 5. This detachable connection facilitates the maintenance and replacement of the underbody protection structure.

[0034] In this embodiment, the underbody protection plate structure is connected to the vehicle chassis 5 via a threaded connection assembly, which includes a bolt 6 and a pre-welded nut 7. The pre-welded nut 7 is welded to the vehicle chassis 5. After the bolt 6 passes through the oblong hole 301 and the bolt 6 through hole 203, it connects to the pre-welded nut 7 on the vehicle chassis 5, thereby achieving a detachable connection between the underbody protection plate structure and the vehicle chassis 5.

[0035] The vehicles can be, but are not limited to, pure electric vehicles (PEV / BEV), hybrid electric vehicles (HEV), range-extended electric vehicles (REEV), plug-in hybrid electric vehicles (PHEV), new energy vehicles, and gasoline vehicles.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A bottom guard plate mold forming structure, characterized in that: The device includes a bottom protective plate body (1) connected as one piece and multiple reinforcing pads (3). Multiple connecting recesses (2) are spaced apart on the bottom protective plate body (1). The multiple connecting recesses (2) protrude from the bottom protective plate body (1) along a first direction. Each reinforcing pad (3) is connected to the periphery of the bottom protective plate body (1) through a connecting piece (4). The number of reinforcing pads (3) is not less than the number of connecting recesses (2).

2. The bottom guard plate mold forming structure according to claim 1, characterized in that: The connecting platform (2) includes a conical ring (201) and a connecting part (202). The inner diameter of the conical ring (201) gradually decreases along the first direction. One side of the conical ring (201) is connected to the bottom guard plate body (1) through a rounded transition, and the other side of the conical ring (201) is connected to the connecting part (202) through a rounded transition.

3. The bottom guard plate mold forming structure according to claim 2, characterized in that: The connecting part (202) is provided with a bolt (6) through hole (203), and the reinforcing gasket (3) is provided with a waist-shaped hole (301).

4. A bottom protective plate structure, characterized in that: It includes a bottom guard plate body (1) and a plurality of connecting recesses (2) spaced apart on the bottom guard plate body (1). The plurality of connecting recesses (2) protrude from the bottom guard plate body (1) along a first direction, and each of the connecting recesses (2) is provided with a reinforcing pad (3).

5. The bottom protective plate structure according to claim 4, characterized in that: The connecting platform (2) includes a conical ring (201) and a connecting part (202). The inner diameter of the conical ring (201) gradually decreases along the first direction. One side of the conical ring (201) is connected to the bottom guard plate body (1) through a rounded transition, and the other side of the conical ring (201) is connected to the connecting part (202) through a rounded transition.

6. The bottom protective plate structure according to claim 5, characterized in that: The reinforcing pad (3) is disposed on the side of the connecting part (202) facing the bottom guard plate body (1).

7. The bottom protective plate structure according to claim 5, characterized in that: The reinforcing pad (3), the bottom guard plate body (1), and the connecting platform (2) are made of the same material, and the reinforcing pad (3) is connected to the connecting part (202) by adhesive.

8. The bottom protective plate structure according to claim 5, characterized in that: The connecting part (202) is provided with a bolt (6) through hole (203), and the reinforcing gasket (3) is provided with a waist-shaped hole (301).

9. A vehicle, characterized in that: The vehicle chassis (5) and the underbody structure as described in any one of claims 4-8, wherein the underbody structure is detachably connected to the vehicle chassis (5).

10. The vehicle according to claim 9, characterized in that: The underbody protection structure is connected to the vehicle chassis (5) via a threaded connection assembly, which includes a bolt (6) and a pre-welded nut (7), and the pre-welded nut (7) is welded to the vehicle chassis (5).

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