Double-color double-density anti-collision strip

Abstract

The utility model discloses a double-color double-density anti-collision strip which comprises a base material, the base material comprises an outer layer and an inner layer, the outer layer is made of high-density hard materials, concave-convex textures are arranged on the outer surface of the outer layer, the outer layer is transparent, a colored core body of the inner layer is wrapped in the outer layer, and contrast color blocks are formed through color separation secondary injection molding. The inner layer is made of a low-density elastic material, an attaching layer is arranged on the side wall of the side, away from the outer layer, of the inner layer and adheres to a vehicle body face, a release layer is arranged on the side, away from the inner layer, of the attaching layer, a water guide groove is formed in the top of the inner layer, and a plurality of sets of honeycomb holes are formed in the side wall of one side of the inner layer; through a double-color double-density structure, surface functional textures and convenient installation design, comprehensive breakthrough in aesthetics, protection and durability of the anti-collision strip is achieved, the anti-collision strip can be widely applied to passenger vehicles and commercial vehicles, the added value and market competitiveness of products are remarkably improved, and the inner layer is made of EPP materials, so that the inner layer becomes an ideal energy-absorbing material.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a vehicle anti-collision strip with a dual-color, dual-density structure, which can be applied to the protective decoration of various vehicle types such as passenger cars and commercial vehicles. Background Technology

[0002] With the rapid development of the automotive industry, users have increasingly higher requirements for the appearance and functional accessories of vehicles. As one of the key vehicle accessories, anti-collision strips not only need to provide effective collision protection, but also need to take into account multiple functions such as decorative aesthetics and environmental adaptability.

[0003] Currently, the main technical limitations of crash barrier products on the market are as follows:

[0004] First, traditional bumper strips are mostly constructed from a single material (such as rubber, plastic, or foam). This single-density structure makes it difficult to simultaneously meet the dual requirements of low-speed collision energy absorption and high-speed impact protection. Specifically, while soft materials can effectively absorb energy from minor collisions, they are prone to permanent deformation under high-speed impacts, affecting their service life. On the other hand, while hard materials have good resistance to high-speed impacts, they lack the necessary elastic cushioning capacity, which not only easily generates noise but may also cause secondary damage to the vehicle's paint.

[0005] Secondly, existing crash strips are relatively monotonous in terms of visual aesthetics, mostly featuring monochrome designs, which makes it difficult to meet the growing personalized needs of consumers and fails to create a harmonious and unified aesthetic effect with the overall vehicle design.

[0006] In addition, traditional methods of installing bumper strips often rely on double-sided tape or mechanical fixing. These methods may have drawbacks such as weak adhesion and easy detachment, or complex installation and potential damage to the vehicle body, which affect the user experience.

[0007] Finally, conventional bumper strips are not adaptable to extreme weather conditions, such as rain and snow, which can easily cause water to accumulate and freeze, affecting product performance and service life.

[0008] Therefore, there is an urgent need for a new type of crash barrier product that can solve the above-mentioned technical problems at the same time, so as to meet the market demand for high-performance, aesthetically pleasing and easy-to-install crash barriers. Utility Model Content

[0009] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a two-color, two-density anti-collision strip. Through innovative structural design and material application, the anti-collision strip achieves a comprehensive improvement in protective function, aesthetic effect and ease of installation.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A dual-color, dual-density anti-collision strip includes a substrate comprising an outer layer and an inner layer. The outer layer is made of a high-density rigid material and has a textured surface. The outer layer is transparent and encloses a colored core of the inner layer, which is formed into contrasting color blocks through color-separated secondary injection molding. The inner layer is made of a low-density elastic material. An adhesive layer is provided on the sidewall of the inner layer away from the outer layer. The adhesive layer is bonded to the vehicle body surface. A release layer is provided on the side of the adhesive layer away from the inner layer.

[0012] Furthermore, a water guide groove is provided on the top of the inner layer, and several sets of honeycomb holes are provided on one side wall of the inner layer.

[0013] Furthermore, it also includes thin-walled reinforcing ribs, which are disposed on the inner wall of the honeycomb holes.

[0014] Furthermore, the outer layer is made of transparent TPU, with a light transmittance ≥85% and a density ranging from 1.1 to 1.5 g / cm³. 3 .

[0015] Furthermore, the raised texture is set as a continuous diamond pattern, the depth of the raised texture is 0.3-0.8mm, and the spacing is 2-5mm.

[0016] Furthermore, the inner layer is made of foamed EPP material, wherein the foamed EPP material forms a dual-density structure, providing optimized energy absorption and impact resistance.

[0017] Furthermore, the bonding layer has a micro-raised mesh pattern on the contact surface with the vehicle body, the micro-raised mesh pattern having a raised height of 0.5-1mm and a spacing of 3-5mm.

[0018] Furthermore, the bonding layer is a UV-cured acrylic adhesive layer with a thickness of 0.8-1.2 mm, and the release layer is a silicone oil-coated PET film with a thickness of 0.05-0.1 mm, which covers the adhesive surface of the bonding layer.

[0019] Furthermore, the surface of the outer layer is provided with a number of small bumps or small diagonal lines, which are formed by process holes on the mold during the injection molding process.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Dual-Density Structure Design: By organically combining an outer layer of high-density rigid material with an inner layer of low-density elastic material, the design achieves a fusion of low-speed collision energy absorption and high-speed impact resistance, significantly improving the overall protective effect of the crash strip. In particular, the inner layer utilizes a foamed EPP dual-density structure, which optimizes energy absorption and rebound performance while maintaining lightweight design.

[0022] 2. Unity of Aesthetics and Function: The design of a transparent outer layer encasing a colored inner layer not only creates a sense of visual depth but also enhances the product's aesthetic value by forming striking contrasting color blocks through a two-stage color-separation injection molding process. Simultaneously, the textured surface of the outer layer provides multiple functions, including anti-slip properties, dispersing impact pressure, and reducing noise.

[0023] 3. Structural optimization design: The honeycomb structure and thin-walled reinforcing ribs of the inner layer ensure structural strength while achieving lightweight and improving material utilization efficiency; while the top water channel effectively solves the problem of rainwater accumulation and enhances the product's adaptability to various weather conditions.

[0024] 4. Improved ease of installation: The design of the bonding layer and release layer allows the product to be quickly and without damage to the vehicle body. The micro-raised mesh pattern further enhances the stability of the fit with the vehicle body and adapts to vehicle body surfaces with different curvatures.

[0025] 5. Enhanced Aesthetic Craftsmanship: The small bumps or diagonal lines on the outer surface not only enhance the visual texture of the product but also provide additional anti-slip functionality. These meticulous design details stem from the precise control of the mold process during injection molding.

[0026] In summary, this utility model, through innovative structural design, material selection, and process application, comprehensively improves the protective performance, aesthetic effect, and ease of use of the anti-collision strip, and can be widely used in various passenger cars and commercial vehicles, significantly enhancing product added value and market competitiveness. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is an exploded view of the axial structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the bonding layer and the micro-protruding mesh pattern of this utility model;

[0030] Figure 4 This is a schematic diagram of the inner layer and honeycomb holes of this utility model.

[0031] In the diagram: 1. Substrate; 101. Outer layer; 102. Inner layer; 2. Adhesive layer; 3. Release layer; 4. Water channel; 5. Honeycomb holes; 6. Thin-walled reinforcing ribs; 7. Textured surface; 8. Micro-raised grid pattern. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-4 The dual-color, dual-density anti-collision strip provided by this utility model mainly includes the following key components and their collaborative working methods:

[0034] The base material 1 is the main structure of the anti-collision strip, consisting of two parts: the outer layer 101 and the inner layer 102. Through special design, it achieves a unity of function and aesthetics.

[0035] The outer layer 101 is made of a high-density rigid material, specifically transparent TPU material with a light transmittance of ≥85% and a density range of 1.1-1.5 g / cm³. 3 The choice of material allows the outer layer 101 to provide excellent abrasion and scratch resistance while maintaining good transparency to effectively showcase the internal colored core. The outer surface of the outer layer 101 features a textured surface 7 with a continuous diamond pattern, precisely controlled in depth (0.3-0.8mm) and spacing (2-5mm). This textured design not only enhances the product's anti-slip performance but also effectively disperses impact pressure, reduces noise during collisions, and gives the product a unique visual texture and tactile feedback.

[0036] The outer layer 101 is transparent, encasing the colored core of the inner layer 102 within it. Contrasting color blocks are created through a two-stage color-separation injection molding process. This design creates a distinct visual hierarchy. The color of the inner layer 102 can be customized according to vehicle model, brand, or user needs, while the transparent material of the outer layer 101 retains the texture of the original paint finish, achieving a perfect unity of "invisible decoration" and personalized expression. The surface of the outer layer 101 also features several small bumps or diagonal lines. These details originate from the precise design of the process holes on the mold during injection molding, enhancing both the aesthetic value and anti-slip function of the product. Through the process holes on the mold, steam heating during molding allows the product materials to fuse together, and water cooling is applied directly to the product after molding.

[0037] The inner layer 102 is made of a low-density elastic material, specifically foamed EPP, forming a dual-density structure that provides optimized energy absorption and impact resistance. EPP material possesses numerous excellent properties, including high toughness and good resilience, low density, weather resistance and chemical corrosion resistance, superior processing performance, thermal insulation performance, environmentally friendly production process, fatigue resistance, good sound insulation performance, electrical insulation performance, and UV resistance. These properties make it an ideal energy-absorbing material. Through the deformation of the inner layer 102, the bumper strip can effectively absorb collision energy, significantly reducing impact damage to the vehicle body.

[0038] The top of the inner layer 102 is provided with a water-guiding channel 4. This design can guide rainwater to drain quickly along the surface of the anti-collision strip, effectively avoiding corrosion or freezing problems caused by water accumulation, extending the product's service life and ensuring stable performance under various climatic conditions. Several sets of honeycomb holes 5 are provided on one side wall of the inner layer 102. This structure reduces weight while maintaining the necessary structural strength and optimizes material utilization efficiency.

[0039] To further enhance structural stability, thin-walled reinforcing ribs 6 are provided on the inner wall of the honeycomb holes 5. These reinforcing ribs enhance the deformation resistance of the hole wall, ensuring the stability and consistency of the buffer performance, and maintaining good shape recovery ability even after frequent use or large impacts.

[0040] Regarding the installation system, an adhesive layer 2 is provided on the side wall of the inner layer 102 away from the outer layer 101, and the adhesive layer 2 is directly bonded to the vehicle body surface. The contact surface between the adhesive layer 2 and the vehicle body has a micro-raised mesh pattern 8, with the raised height precisely controlled at 0.5-1mm and the spacing at 3-5mm. This special pattern design further enhances the adhesion stability with the vehicle body, can adapt to vehicle body surfaces with different curvatures, reduce installation errors, and ensure long-term stability.

[0041] The bonding layer 2 uses a UV-cured acrylic adhesive layer with a thickness of 0.8-1.2mm and an initial bond strength ≥10N / cm, enabling it to quickly and firmly bond to the vehicle body surface. A release layer 3 is located on the side of the bonding layer 2 away from the inner layer 102. Release layer 3 is made of silicone-coated PET film with a thickness controlled at 0.05-0.1mm and a peel strength ≤5N / cm. Release layer 3 covers the adhesive surface of the bonding layer 2 and can be easily and non-destructively removed during installation without the need for professional tools, avoiding potential damage to the original paint surface from adhesive residue and greatly improving the user's installation experience.

[0042] In summary, this utility model, through innovative structural design, precise material selection, and advanced process application, successfully solves several technical challenges of traditional anti-collision strips in terms of functionality, aesthetics, and convenience, providing vehicles with a comprehensive protection solution and significantly enhancing the product's market competitiveness and user experience.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-colour, two-density anti-collision strip comprising a substrate (1), characterised in that: The substrate (1) comprises an outer layer (101) and an inner layer (102), the outer layer (101) is made of high-density hard material, the outer surface of the outer layer (101) is provided with a concave-convex texture (7), the outer layer (101) is transparent, the outer layer (101) wraps the color core of the inner layer (102), and the contrast color block is formed by color separation secondary injection molding, the inner layer (102) is made of low-density elastic material, the side wall of the inner layer (102) away from the outer layer (101) is provided with a conformal layer (2), the conformal layer (2) is bonded to the surface of the vehicle body, and the side of the conformal layer (2) away from the inner layer (102) is provided with a release layer (3).

2. The bi-colour, bi-density anti-collision strip according to claim 1, characterised in that: The top of the inner layer (102) is provided with a water guide groove (4), and a plurality of groups of honeycomb holes (5) are formed in the side wall of the inner layer (102).

3. The bi-colour, bi-density anti-collision strip according to claim 2, wherein: A thin-walled reinforcing rib (6) is further included, and the thin-walled reinforcing rib (6) is arranged on the inner wall of the honeycomb hole (5).

4. The dual color dual density bumper strip of claim 1, wherein: The outer layer (101) adopts transparent TPU, the light transmittance of the outer layer (101) is greater than or equal to 85%, and the density ranges from 1.1 to 1.5 g / cm 3 .

5. The dual color dual density bumper strip of claim 1, wherein: The concave-convex texture (7) is a continuous diamond-shaped line, the depth of the concave-convex texture (7) is 0.3-0.8mm, and the pitch is 2-5mm.

6. The dual color dual density bumper strip of claim 1, wherein: The inner layer (102) is made of foamed EPP material, wherein the foamed EPP material forms a double-density structure to provide energy absorption and impact resistance.

7. The dual color dual density bumper strip of claim 1, wherein: The conformal layer (2) is provided with a micro-protrusion grid pattern (8) on the contact surface of the vehicle body, the protrusion height of the micro-protrusion grid pattern (8) is 0.5-1mm, and the pitch is 3-5mm.

8. The dual color dual density bumper strip of claim 1, wherein: The conformal layer (2) is a UV-cured acrylic adhesive layer, the thickness of the conformal layer (2) is 0.8-1.2mm, the release layer (3) is a silicone-coated PET film with a thickness of 0.05-0.1mm, and the release layer (3) covers the adhesive surface of the conformal layer (2).

9. The dual color dual density bumper strip of claim 1, wherein: The surface of the outer layer (101) is provided with a plurality of small protrusions or small diagonal lines, which are formed by process holes on the mold during injection molding.

Images