A gas-assist reinforced structure for an appearance surface product member
Patent Information
- Application Number
- CN202521977602.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-15
AI Technical Summary
然而，对于诸如卡车顶柜储物底板等正反两面均作为外观面使用的产品，传统的加强筋结构无法适用——若在任一外观面布置实心加强筋，均会导致视觉上的不美观和触觉上的不舒适，因此该类产品长期以来缺乏有效的加强方案，存在刚性不足、易变形等问题
[0012]本实用新型具有的优点和技术效果：本实用新型巧妙地利用了气辅工艺的特性，创造性地解决了双外观面零件无法通过传统加强筋进行有效结构加强的行业难题。它不仅实现了美学、触感与结构强度的统一，还额外带来了减重、省料的益处，为汽车内外饰及其他领域具有外观面产品的设计提供了一种全新的、优秀的解决方案。
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Figure CN224660630U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive technology, and in particular relates to an air-assisted reinforcing structure for product components with exterior surfaces. Background Technology
[0002] With the rapid development of automotive technology, consumers are increasingly demanding higher sensory quality, structural strength, and rigidity from interior and exterior parts. For products with only one side serving as an exterior surface, reinforcing ribs can typically be placed on non-exterior structural surfaces to avoid impacting aesthetics and tactile comfort. However, for products such as truck roof storage panels where both sides serve as exterior surfaces, traditional reinforcing rib structures are unsuitable—placing solid reinforcing ribs on either exterior surface would result in visual unappeal and tactile discomfort. Consequently, such products have long lacked effective reinforcement solutions, leading to insufficient rigidity and susceptibility to deformation.
[0003] In addition, traditional solid reinforcing rib structures can lead to increased material usage and product weight, and are prone to quality defects such as shrinkage marks on the corresponding surfaces of the ribs, further limiting their application in high-quality products with attractive appearances. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides an internal reinforcement structure for products with dual exterior surfaces. By using an air-assisted process, hollow reinforcing ribs are formed inside the product, which significantly improves the rigidity and strength of the product while avoiding adverse visual or tactile effects on the exterior surface, and achieves lightweighting and material saving.
[0005] This utility model is implemented as follows: an air-assisted reinforcing structure for a product component with an external surface, characterized in that it includes: a product body having at least one external surface; a reinforcing structure extending along the boundary of the product body and / or the area requiring structural reinforcement, and protruding from the external surface of the product body; an air-assisted cavity formed inside the reinforcing structure; an air-assisted air inlet and at least one air-assisted air outlet disposed on the product body and communicating with the air-assisted cavity.
[0006] More preferably, the cross-sectional shape of the gas-assisted cavity is one of a circle, an ellipse, or a rectangle.
[0007] More preferably, the air-assisted air inlet and the air-assisted air outlet are located on the non-exterior surface of the product body or in an area that is covered after assembly.
[0008] More preferably, the main body of the product has a plate-like structure.
[0009] More preferably, the plate-like structure is a storage base plate, supporting walls, a frame body, or a map pocket outer frame.
[0010] More preferably, the reinforcing structure consists of multiple structures that are interconnected to form a grid-like reinforcing structure.
[0011] More preferably, the gas-assisted cavity is a sealed cavity with a smooth inner wall formed by high-pressure gas penetrating through the plastic melt.
[0012] The advantages and technical effects of this utility model are as follows: This utility model ingeniously utilizes the characteristics of gas-assisted processing to creatively solve the industry problem that double-surface parts cannot be effectively structurally strengthened using traditional reinforcing ribs. It not only achieves a unity of aesthetics, tactile feel, and structural strength, but also brings the additional benefits of weight reduction and material saving, providing a new and excellent solution for the design of automotive interior and exterior trim and other products with exterior surfaces. Attached Figure Description
[0013] Figure 1a This is a schematic diagram of the structure of Embodiment 1 of this utility model; Figure 1b This is a schematic diagram of the exterior structure of the storage base of the truck's roof cabinet; Figure 2 This is a top view of the exterior of the truck's overhead storage compartment floor. Figure 3 yes Figure 2 Sectional view of AA; In the diagram: 1. Storage base plate; 2. Reinforcing structure; 3. Air-assisted air inlet; 4. Air-assisted air outlet; 5. Air-assisted cavity. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.
[0015] Example 1: As Figures 1a to 3 As shown, this embodiment provides an air-assisted reinforcement structure for use on the exterior surface of the storage base plate of a truck roof cabinet.
[0016] The structure mainly includes: a storage base plate 1, a reinforcing structure 2, an air-assisted air inlet 3, an air-assisted air outlet 4, and an air-assisted cavity 5 formed inside the reinforcing structure 2.
[0017] The storage base plate 1 is a component of the truck roof cabinet. Both its front and back sides are visible to the outside, which requires that its surface cannot have the structure and feel of traditional mesh reinforcement.
[0018] Please see Figure 1b The reinforcing structure 2 is a reinforcing rib that protrudes from the outer surface of the storage base plate 1. Its unique feature is that its shape is not a traditional straight mesh, but rather extends along the boundary contour area of the storage base plate 1 (e.g., along the perimeter of the base plate). This conformal design creates aesthetically pleasing lines, enhancing the product's sensory quality.
[0019] The interior of the reinforcing structure 2 is not solid, but rather a gas-assisted cavity 5 formed by high-pressure gas penetration. The cross-section of this gas-assisted cavity 5 is preferably circular or elliptical (e.g., ...). Figure 3 (As shown). This streamlined cavity structure allows for a uniform transition in the wall thickness of the reinforcing structure 2, avoiding sharp corner stress and improving structural strength and rigidity. Simultaneously, the smooth inner wall ensures smooth gas flow and stable molding.
[0020] The air-assisted air intake port 3 and air-assisted air exhaust port 4 are disposed on the storage base plate 1 and are connected to the air-assisted cavity 5. In this embodiment, the air-assisted air intake port 3 and air-assisted air exhaust port 4 are both located on the non-visible surface of the storage base plate 1 (e.g., the covered surface that will contact the vehicle body after final assembly), ensuring the integrity and aesthetics of the final visible surface of the product.
[0021] The technical advantage of this embodiment is that: Visual and tactile effects: The conformal shape of reinforced structure 2 replaces the traditional mesh reinforcement, resulting in an aesthetically pleasing appearance; its smooth transition surface is comfortable to the touch and does not feel prickly.
[0022] Structural reinforcement effect: The internal air-assisted cavity 5 forms a structure similar to a "tube beam", which greatly enhances the bending and torsional stiffness of the storage base plate 1 in a specific direction, perfectly meeting the reinforcement requirements of dual-surface products.
[0023] Lightweight and environmental benefits: The air-assisted hollow body 5 replaces solid plastic, significantly reducing the amount of material used and lowering the product weight, which is in line with the trend of automotive lightweighting, while also reducing production costs.
[0024] The manufacturing method of this utility model is briefly described as follows: First, a cavity corresponding to the storage base plate 1 and the reinforcing structure 2 is formed in the mold. Then, approximately 95% of the molten plastic is injected into the cavity using an injection molding machine. Subsequently, high-pressure nitrogen is injected into the unsolidified melt through the gas-assisted vent 3. The high-pressure nitrogen penetrates the melt along the path of least resistance (usually the area with the highest core temperature and lowest viscosity), pushing the solid melt to all parts of the mold cavity, maintaining sufficient pressure, thereby forming a smooth-walled gas-assisted cavity 5. Finally, the gas is discharged from the gas-assisted vent 4, and after pressure holding and cooling, the mold is opened to obtain the final product.
[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An air-assisted reinforcing structure for product components with external surfaces, characterized in that, include: The product body has at least one exterior surface; A reinforcing structure extends along the boundary of the product body's exterior surface and / or the area requiring structural reinforcement, and protrudes from the product body's exterior surface; an air-assisted cavity is formed inside the reinforcing structure; An air-assisted air inlet and at least one air-assisted air outlet are provided on the main body of the product and are connected to the air-assisted cavity.
2. The gas-assisted reinforcing structure for product components with external surfaces according to claim 1, characterized in that, The cross-sectional shape of the gas-assisted cavity is one of a circle, an ellipse, or a rectangle.
3. The gas-assisted reinforcing structure for product components with external surfaces according to claim 1, characterized in that, The air-assisted air inlet and the air-assisted air outlet are located on the non-exterior surfaces of the product body or in areas that are covered after assembly.
4. The gas-assisted reinforcing structure for product components with external surfaces according to claim 1, characterized in that, The main body of the product is a plate-like structure.
5. The air-assisted reinforcing structure for product components with external surfaces according to claim 4, characterized in that, The plate-like structure is a storage base plate, supporting walls, a skeleton body, or a map bag frame.
6. The gas-assisted reinforcing structure for product components with external surfaces according to claim 1, characterized in that, The reinforcing structure consists of multiple sections that are interconnected to form a grid-like reinforcing structure.
7. The air-assisted reinforcing structure for product components with external surfaces according to claim 1, characterized in that, The gas-assisted cavity is a sealed cavity with a smooth inner wall formed by high-pressure gas penetrating through the plastic melt.