A multi-layered composite laminated eyeglass temple

Abstract

The utility model discloses a kind of multi-layer composite laminated glasses legs, including outer layer, middle layer and inner layer, above-mentioned three-layer structure is formed integrated laminated structure by hot-pressing or adhesive composite, the material elastic modulus of three-layer structure is sequentially gradient decreasing distribution from outside to inside, wherein middle layer includes metal sheet and cladding metal sheet's cladding layer, outer layer structure surface is equipped with antiskid line and hydrophobic coating, the joint surface between outer layer and middle layer, middle layer and inner layer are all rough surface, inner layer surface is equipped with micro convex grain array, the glasses leg of the utility model adopts three-layer laminated structure, the elastic modulus of its three-layer material is sequentially decreasing from outside to inside, forms the composite laminated structure of outer rigid inner soft, so that the tenacity, structural strength and rigidity of glasses leg are better, can withstand high-intensity stretching and compression.

Description

Technical Field

[0001] This utility model relates to the field of eyeglasses technology, and in particular to a multi-layered composite laminated eyeglass temple that is tough, has high structural strength, is not easily broken or damaged, and is not likely to cause skin allergies. Background Technology

[0002] The main materials for eyeglass temples include metal, plastic, composite materials, and bamboo and wood. Metal temples are strong, impact-resistant, and wear-resistant, but they are not easy to process and can easily cause skin allergies. Plastic temples are easy to process and inexpensive, but they have low structural strength and are prone to aging and becoming brittle. Composite material temples are stable and reliable, but they are complex to manufacture, difficult to process, and costly. Bamboo and wood temples are lightweight and have beautiful patterns, but they are not comfortable to wear, have low toughness, and are prone to wear and breakage. Utility Model Content

[0003] This invention mainly addresses the shortcomings of conventional materials mentioned above; it provides a multi-layered composite laminated eyeglass temple with good toughness, high structural strength, resistance to breakage and damage, and low risk of causing skin allergies.

[0004] To solve the aforementioned technical problems, this utility model mainly adopts the following technical solution:

[0005] This invention relates to a multi-layer composite laminated temple for eyeglasses, which has a three-layer structure including an outer layer, a middle layer, and an inner layer. The inner layer is fitted to the skin of the human ear. The three layers are laminated together by hot pressing or adhesive to form an integrated laminated structure. The elastic modulus of each layer in the three-layer structure decreases in a gradient from the outside to the inside, forming a composite temple that is rigid on the outside and flexible on the inside.

[0006] Preferably, the thickness ratio of the three-layer structure is 20-30% for the outer layer, 40-60% for the middle layer, and 20-30% for the inner layer.

[0007] Preferably, the outer layer is made of a high-rigidity material, such as bamboo-wood or carbon fiber composite material, polycarbonate, or metal alloy; the middle layer is made of a high-toughness material, including a metal sheet and a fiber-reinforced structural layer covering the metal sheet, such as polyamide (PA), glass fiber reinforced nylon, or aramid fiber; and the inner layer is made of a high-elasticity material, such as thermoplastic polyurethane (TPU), silicone, or elastic memory resin. The elastic modulus of the three-layer structure decreases sequentially from the outside to the inside, forming a three-layer composite structure that is rigid on the outside and flexible on the inside. The outer layer is a rigid material with strong impact resistance, the middle layer is an elastic resin material with high deformation capacity, and the inner layer is an elastic, skin-friendly material that is gentle on the skin and does not compress it.

[0008] Preferably, the covering layer has a fiber-reinforced structure, which is a unidirectional fiber or a fiber / resin alternating structure. The fiber direction is consistent with the force direction of the temple. Covering the metal sheet with a fiber-reinforced structure composed of unidirectional fibers or fiber / resin alternating structures improves the toughness, structural strength and stiffness of the intermediate layer, enabling it to withstand high-intensity tension and compression.

[0009] Preferably, the surface of the fiber-reinforced structure is coated with a coupling agent, which is a silane-based coupling agent or a titanate-based coupling agent. Mixing coupling agents improves the interfacial properties between fiber structures, which is estimated to be a conventional technique.

[0010] Preferably, the outer surface of the outer layer is provided with anti-slip texture, which is formed by laser engraving or injection molding. The depth of the anti-slip texture is 0.1-0.5mm. A hydrophobic coating is applied to the anti-slip texture. The hydrophobic coating is a fluorocarbon resin or nano-silica modified coating with a contact angle >110°. The outer surface is anti-slip and hydrophobic, and will not slip or get wet. It is stable and safe to place, which is a conventional technology.

[0011] Preferably, the bonding surfaces between the outer layer and the middle layer, and between the middle layer and the inner layer, are rough surfaces with a roughness Ra value of 2 to 10 μm. The rough surfaces are formed by plasma treatment or chemical etching. The use of a rough surface structure for the bonding surfaces of each layer can improve the lamination bonding strength between the layers.

[0012] Preferably, the joint surfaces between the outer layer and the middle layer, and between the middle layer and the inner layer, are provided with a gradual transition section at their ends. The gradual transition section is a wave-shaped structure or a sawtooth structure, which reduces the risk of physical delamination at the joint surfaces of each layer, disperses the stress at the ends of the joint surfaces, and improves the joint strength of each joint surface.

[0013] Preferably, the inner surface of the inner layer corresponding to the human ear is provided with a plurality of micro protrusions arranged in an array. The height of the protrusions is 0.3 to 1 mm. The protrusion array can disperse the pressure of the temple on the human ear and increase the breathability of the contact surface.

[0014] Preferably, the inner surface of the intermediate layer of the inner layer is provided with a plurality of buffer cavities arranged in an array, and the buffer cavities are filled with flexible gel or microporous foam material, which can improve the impact resistance of the temple.

[0015] Preferably, at least one layer of the above three-layer structure incorporates nanoparticles, which are silicon dioxide or carbon nanotubes, with a doping ratio of 1 to 5 wt%. The nanoparticles can improve the fatigue resistance of the material.

[0016] The beneficial effects of this utility model are as follows: the temples of the glasses are made of multi-layer laminated structural material, and the elastic modulus of each layer decreases from the outside to the inside, forming a composite structure that is rigid on the outside and flexible on the inside. The outer layer is made of rigid material, which has strong impact resistance. The middle layer is made of metal sheet combined with fiber-reinforced structural material, which has high toughness, structural strength, stiffness and energy absorption capacity, and can withstand greater tensile and compressive strength. The inner layer is made of elastic skin-friendly material, which is friendly to the skin and comfortable to wear. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram: 1. Outer layer, 2. Middle layer, 201. Metal sheet, 202. Coating layer, 203. Buffer cavity, 3. Inner layer, 4. Anti-slip texture, 5. Hydrophobic coating, 6. Protrusions. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example: A multi-layered composite laminated eyeglass temple according to this example, such as... Figure 1 As shown, the temples of the eyeglasses are a three-layer composite laminated structure, including an outer layer 1, a middle layer 2, and an inner layer 3. These three layers are formed into an integrated laminated structure through hot pressing. The elastic modulus of each layer decreases gradually from the outside to the inside, creating a composite temple that is rigid on the outside and flexible on the inside. The thickness ratio of the three layers is 20% for the outer layer, 50% for the middle layer, and 30% for the inner layer. The outer layer is made of high-rigidity polycarbonate material and doped with nano-sized silica particles at a doping ratio of 2wt%, giving the outer layer material high strength, impact resistance, and anti-aging properties. The intermediate layer structure consists of a metal sheet 201 and a covering layer 202 on the metal sheet. The covering layer is made of a high-toughness fiber-reinforced structure composed of unidirectional fibers. The direction of the unidirectional fibers is consistent with the direction of force on the temple. The surface of the unidirectional fibers is coated with a silane coupling agent. The fiber reinforcement structure can improve the mechanical properties of the intermediate layer material, giving the intermediate layer high toughness, tensile strength, compressive strength and flexural strength, and enabling it to withstand high-intensity tension and compression. The inner layer structure is made of highly elastic thermoplastic polyurethane material, which is skin-friendly and has good wearing comfort.

[0021] The outer layer structure has anti-slip texture 4 on its surface, which is formed by laser engraving. The depth of the anti-slip texture is 0.2mm. A hydrophobic coating 5 is applied to the anti-slip texture. The hydrophobic coating is a nano-silica modified coating with a contact angle >110°. The anti-slip and hydrophobic layers on the surface of the outer layer structure prevent the temples from slipping or getting wet or dusty, ensuring stable and safe placement. The joint surfaces between the outer and middle layers, and between the middle and inner layers, are roughened surfaces with a roughness Ra value of 5μm. The roughened surfaces are formed by chemical etching. The roughened structure of the joint surfaces improves the lamination bonding strength between the layers. The ends of the joint surfaces between the outer and middle layers, and between the middle and inner layers... The ends of the joint surfaces between the layers are designed with a gradient transition section. The gradient filter section has a sawtooth structure. The design of the sawtooth structure of the gradient transition section can reduce the risk of physical delamination between the joint surfaces of the layers, disperse the stress at the ends of the joint surfaces, and improve the composite strength of the joint surfaces of the layers. The surface of the inner layer structure is designed with multiple arrayed micro-protrusions 6, with a protrusion height of 0.5mm. The arrayed protrusions can disperse the pressure of the temples on the human ear and increase the breathability of the contact surface between the temples and the human skin. The surface of the corresponding middle layer structure of the inner layer is also designed with multiple arrayed buffer cavities 203. The buffer cavities are filled with flexible gel. The buffer cavities and flexible gel can improve the impact resistance of the temples and extend the service life of the temples.

[0022] In the description of this utility model, the technical terms "upper", "lower", "front", "rear", "left", "right", "longitudinal", "horizontal", "inner", and "outer" indicate the direction or positional relationship based on the direction or positional relationship shown in the accompanying drawings. They are only for the purpose of facilitating the description and understanding of the technical solution of this utility model. The above description is not intended to limit this utility model, and this utility model is not limited to the examples described above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the utility model should be considered as protection within the scope of this utility model.

Claims

1. A multi-layered composite laminated temple for eyeglasses, characterized in that: The temple has a three-layer structure, including an outer layer (1), a middle layer (2) and an inner layer (3). The inner layer is attached to the skin of the human ear. The three-layer structure is formed into an integrated laminated structure by hot pressing or by adhesive bonding. The elastic modulus of each layer material in the three-layer structure decreases in a gradient from the outside to the inside.

2. The multi-layer composite laminated eyeglass temple according to claim 1, characterized in that: The thickness ratio of the three-layer structure is as follows: the outer layer (1) accounts for 20-30%, the middle layer (2) accounts for 40-60%, and the inner layer (3) accounts for 20-30%.

3. The multi-layer composite laminated temple of eyeglasses according to claim 1 or 2, characterized in that: The outer layer (1) is made of a high-rigidity material, which is a bamboo or wood or carbon fiber composite material or polycarbonate or metal alloy; the middle layer (2) is made of a high-toughness material, which includes a metal sheet (201) and a covering layer (202) covering the metal sheet, which is polyamide (PA) or glass fiber reinforced nylon or aramid fiber; the inner layer (3) is made of a high-elasticity material, which is thermoplastic polyurethane (TPU) or silicone or elastic memory resin.

4. The multi-layer composite laminated temple of eyeglasses according to claim 3, characterized in that: The covering layer (202) is provided with a fiber-reinforced structure, which is a unidirectional fiber or a fiber / resin alternating structure, and the fiber direction is consistent with the force direction of the temple.

5. The multi-layer composite laminated temple of eyeglasses according to claim 4, characterized in that: The surface of the fiber-reinforced structure (202) is coated with a coupling agent, which is a silane coupling agent or a titanate coupling agent.

6. The multi-layer composite laminated eyeglass temple according to claim 3, characterized in that: The outer surface of the outer layer (1) is provided with anti-slip texture (4), which is formed by laser engraving or injection molding. The depth of the anti-slip texture is 0.1-0.5 mm. A hydrophobic coating (5) is applied to the anti-slip texture. The hydrophobic coating is a fluorocarbon resin or nano-silica modified coating with a contact angle of ≥110°.

7. The multi-layer composite laminated temple of eyeglasses according to claim 3, characterized in that: The joint surface between the outer layer (1) and the middle layer (2) and the joint surface between the middle layer and the inner layer (3) are rough surfaces with a roughness Ra value of 2 to 10 μm. The rough surfaces are formed by plasma treatment or chemical etching.

8. The multi-layer composite laminated eyeglass temple according to claim 7, characterized in that: The ends of the joint surfaces between the outer layer (1) and the middle layer (2) and between the middle layer and the inner layer (3) are provided with a gradual transition section, which is a wave-shaped structure or a sawtooth structure.

9. The multi-layer composite laminated eyeglass temple according to claim 3, characterized in that: The inner layer (3) of the human ear is provided with a plurality of micro protrusions (6) arranged in an array, the height of which is 0.3 to 1 mm.

10. The multi-layer composite laminated temple of eyeglasses according to claim 3, characterized in that: The surface of the intermediate layer (2) corresponding to the inner layer is provided with multiple buffer cavities (203) arranged in an array, and the buffer cavities are filled with flexible gel or microporous foam material.

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