Glasses leg based on multilayer composite lamination technology

Abstract

The invention discloses a glasses leg based on a multilayer composite lamination technology, which comprises an outer layer, a middle layer and an inner layer, the three layers of structures form an integrated lamination structure through hot pressing or bonding agent compounding, the elasticity modulus of the material of the three layers of structures is distributed in a gradient decreasing manner from outside to inside, the middle layer is provided with a fiber reinforced structure, and the inner layer is provided with a fiber reinforced structure. The surface of the outer layer is provided with anti-skid grains and a hydrophobic coating, the joint surfaces of the outer layer and the middle layer and the joint surfaces of the middle layer and the inner layer are rough surfaces, and the surface of the inner layer is provided with a micro convex particle array. The fiber reinforced structure of the middle layer is matched, so that the toughness, the structural strength and the rigidity of the glasses legs are better, and the glasses legs can bear high-strength stretching and compression.

Description

Technical Field

[0001] The present invention relates to the technical field of glasses manufacturing, and particularly to a temple of glasses based on a multi-layer composite lamination technology, which has good toughness, high structural strength, is not easily broken or damaged, and is not likely to cause skin allergies. Background Art

[0002] The materials of temple of glasses mainly include metal, plastic, composite board, bamboo and wood materials, etc. Metal temples have good strength, are resistant to collision and abrasion, but are not easy to process and are prone to cause skin allergies. Plastic temples are easy to process and inexpensive, but have low structural strength and are prone to aging and becoming brittle. Composite board temples are stable and reliable, but are complex to manufacture, difficult to process and costly. Bamboo and wood temples are light in weight and beautiful in texture, but have poor wearing comfort, low toughness and are easy to wear and break. Summary of the Invention

[0003] The present invention mainly solves the deficiencies of the above conventional materials; provides a temple of glasses based on a multi-layer composite lamination technology, which has good toughness, high structural strength, is not easily broken or damaged, and is not likely to cause skin allergies.

[0004] In order to solve the above existing technical problems, the present invention mainly adopts the following technical solutions: A temple of glasses based on a multi-layer composite lamination technology of the present invention, the temple is a three-layer structure, including an outer layer, an intermediate layer and an inner layer, the inner layer is attached to the skin of the human ear, and the above three-layer structure is formed into an integrated laminated structure by hot pressing or adhesive compounding. The elastic moduli of the materials of each layer in the three-layer structure are distributed in a gradient decreasing manner from the outside to the inside, forming a composite temple with a rigid exterior and a flexible interior.

[0005] Preferably, the thickness ratio of the three-layer structure is that the outer layer accounts for 20-30%, the intermediate layer accounts for 40-60%, and the inner layer accounts for 20-30%.

[0006] Preferably, the outer layer is made of a high-rigidity material, and the high-rigidity material is bamboo or carbon fiber composite material or polycarbonate or metal alloy; the intermediate layer is made of a high-toughness material, and the high-toughness material includes a metal thin sheet and a coating layer covering the metal thin sheet, and the coating layer is polyamide (PA) or glass fiber reinforced nylon or aramid fiber; the inner layer is made of a high-elasticity material, and the high-elasticity material is thermoplastic polyurethane (TPU) or silica gel or elastic memory resin. The materials of the three-layer structure have their elastic moduli decreasing in turn from the outside to the inside, forming a three-layer composite structure with a rigid exterior and a flexible interior. The outer layer is a rigid material with strong anti-impact ability, the intermediate layer is an elastic resin material with high deformation ability, and the inner layer is an elastic skin-friendly material, which is friendly to the skin and will not compress the skin.

[0007] Preferably, the coating layer is provided with a fiber reinforcement structure, which is a unidirectional fiber or a fiber / resin alternating structure. The above fiber direction is consistent with the force direction of the temple. Coating a fiber reinforcement structure composed of unidirectional fibers or fiber / resin alternation on the metal sheet improves the toughness, structural strength and stiffness of the intermediate layer, and can withstand large-intensity tensile and compression.

[0008] Preferably, the surface of the above fiber reinforcement structure is coated with a coupling agent, which is a silane coupling agent or a titanate coupling agent, or a mixed coupling agent, to improve the interfacial performance between fiber structures, which is presumably a conventional technique.

[0009] Preferably, the outer surface of the outer layer is provided with anti-slip lines, which are formed by laser engraving or injection molding. The depth of the anti-slip lines is 0.1-0.5 mm, and a hydrophobic coating is applied on the anti-slip lines. The hydrophobic coating is a fluorocarbon resin or a nano-silica modified coating, and its contact angle > 110°. The outer layer surface is anti-slip and hydrophobic, will not slip or get wet, and is placed stably and safely, which belongs to conventional technology.

[0010] Preferably, the joint surfaces between the outer layer and the intermediate layer and between the intermediate layer and the inner layer are rough surfaces, and the Ra value of the roughness is 2-10 μm. The above rough surfaces are formed by plasma treatment or chemical etching. The rough surface structure is adopted for the joint surfaces of each layer, which can improve the lamination joint strength between each layer.

[0011] Preferably, the ends of the joint surfaces between the outer layer and the intermediate layer and between the intermediate layer and the inner layer are provided with gradually changing transition sections, which are wavy structures or serrated structures, reducing the physical delamination risk of the joint surfaces of each layer, dispersing the stress at the ends of the joint surfaces, and improving the joint strength of the joint surfaces of each layer.

[0012] Preferably, the inner surface of the inner layer corresponding to the human ear is provided with a plurality of micro-protrusions distributed in an array, and the height of the protrusions is 0.3-1 mm. The protrusion array can disperse the pressure of the temple on the human ear and increase the air permeability of the contact surface.

[0013] Preferably, a plurality of buffer cavities distributed in an array are provided on the inner surface of the intermediate layer corresponding to the inner layer. The above buffer cavities are filled with a flexible gel or a microcellular foaming material, and the buffer cavities can improve the impact resistance of the temple.

[0014] Preferably, nano-particles are incorporated into at least one layer of materials of the above three-layer structure. The nano-particles are silicon dioxide or carbon nanotubes, and the doping ratio is 1-5 wt%. The nano-particles can improve the fatigue resistance of the materials.

[0015] The beneficial effects of the present invention are as follows: The temple is made of a multi-layer laminated structural material, and the elastic modulus of each layer of material decreases sequentially from the outside to the inside, forming a composite structure with a rigid outer layer and a flexible inner layer. The outer layer is made of a rigid material and has strong anti-impact ability. The middle layer is made of a metal sheet in combination with a fiber-reinforced structural material, with high toughness, structural strength, stiffness and energy absorption ability, and can withstand greater tensile and compressive strength. The inner layer is made of an elastic skin-friendly material, which is friendly to the skin and comfortable to wear. Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the present invention.

[0017] In the figure, 1. outer layer, 2. middle layer, 201. metal sheet, 202. coating layer, 203. buffer cavity, 3. inner layer, 4. anti-slip pattern, 5. hydrophobic coating, 6. convex particles. Detailed Embodiments

[0018] The technical solutions of the present invention will be further specifically described below through examples in combination with the drawings.

[0019] Example: A temple based on a multi-layer composite lamination technology in this example, as Figure 1 shown, the temple is a laminated three-layer composite structure, including an outer layer 1, a middle layer 2 and an inner layer 3. The above three-layer structure is formed into an integrated laminated structure by hot pressing and compounding. The elastic modulus of each layer of material in the three-layer structure decreases sequentially in a gradient distribution from the outside to the inside, forming a composite temple with a rigid outer layer and a flexible inner layer. The thickness ratio of the three-layer structure is that the outer layer accounts for 20%, the middle layer accounts for 50%, and the inner layer accounts for 30%. Among them, the outer layer structure is made of a high-rigidity polycarbonate material and doped with nano-scale silica particles, and the doping ratio is 2wt%, so that the outer layer material has high strength, impact resistance and anti-aging performance; among them, the middle layer structure consists of a metal sheet 201 and a coating layer 202 coated on the metal sheet. The above coating layer is made of a high-toughness fiber-reinforced structure composed of unidirectional fibers. The direction of the above unidirectional fibers is consistent with the force direction of the temple. The surface of the unidirectional fibers is coated with a silane coupling agent. The fiber-reinforced structure can improve the mechanical properties of the middle layer material, so that the middle layer has high toughness, tensile strength, compressive strength and bending strength, and can withstand large-intensity tensile and compression; among them, the inner layer structure is made of a highly elastic thermoplastic polyurethane material, which is friendly to the human skin and has good wearing comfort.

[0020] The surface of the above outer structure is processed with anti-slip lines 4. The anti-slip lines are formed by laser engraving. The depth of the anti-slip lines is 0.2 mm. A hydrophobic coating 5 is applied on the anti-slip lines. The hydrophobic coating is a nano-silica modified coating with a contact angle > 110°. The anti-slip layer and the hydrophobic layer are provided on the surface of the outer structure, making the temple arms not easy to slip or get wet or dusty, and ensuring stable and safe placement. The joint surfaces between the above outer structure and the middle layer structure, and between the middle layer structure and the inner layer structure are rough surfaces with a roughness Ra value of 5 μm. The rough surfaces are formed by chemical etching. The use of a rough structure for the joint surfaces can improve the lamination joint strength between the layers. The ends of the joint surfaces between the above outer structure and the middle layer structure, and the ends of the joint surfaces between the middle layer structure and the inner layer structure are both designed with a gradually changing transition section. The above gradually changing filter section has a zigzag structure. The design of the zigzag structure of the gradually changing transition section can reduce the physical delamination risk of the joint surfaces between the layer structures, disperse the stress at the ends of the joint surfaces, and improve the composite strength of the joint surfaces of the layer structures. The surface of the above inner layer structure is designed with a plurality of micro-protrusions 6 distributed in an array. The height of the protrusions is 0.5 mm. The arrayed protrusions can disperse the pressure of the temple arms on the human ear and increase the air permeability of the contact surface between the temple arms and the human skin. The surface of the middle layer structure corresponding to the inner layer is also designed with a plurality of buffer cavities 203 distributed in an array. The buffer cavities are filled with a flexible gel. The buffer cavities and the flexible gel can improve the impact resistance of the temple arms and extend the service life of the temple arms.

[0021] In the description of the present invention, the technical terms "upper", "lower", "front", "rear", "left", "right", "longitudinal", "transverse", "inner", "outer", etc. indicating directions or position relationships are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing and understanding the technical solution of the present invention. The above description does not limit the present invention, and the present invention is not limited to the examples described above. Any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention shall be regarded as within the protection scope of the present invention.

Claims

1. A temple based on a multi-layer composite lamination technique, characterized in that: The temple is a three-layer structure, including an outer layer (1), a middle layer (2) and an inner layer (3). The inner layer fits the skin of the human ear. The above three-layer structure is formed into an integrated laminated structure by hot pressing or by adhesive composite lamination. The elastic modulus of each layer material in the three-layer structure decreases gradually from the outside to the inside.

2. The temple based on the multi-layer composite lamination technology according to claim 1, wherein: The thickness ratio of the three-layer structure is that the outer layer accounts for 20-30%, the middle layer accounts for 40-60%, and the inner layer accounts for 20-30%.

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

4. The temple based on the multi-layer composite lamination technology according to claim 3, characterized in that: The coating layer (202) is provided with a fiber reinforcement structure, and the fiber reinforcement structure is a unidirectional fiber or a fiber / resin alternating structure. The above fiber direction is consistent with the force direction of the temple.

5. The temple based on the multi-layer composite lamination technology according to claim 4, characterized in that: The surface of the above fiber reinforcement structure is coated with a coupling agent, and the coupling agent is a silane coupling agent or a titanate coupling agent.

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

7. The temple based on the multi-layer composite lamination technology according to claim 3, characterized in that: The joint surfaces between the outer layer (1) and the middle layer (2), and between the middle layer and the inner layer (3) are both rough surfaces, and the Ra value of their roughness is 2-10 μm. The above rough surfaces are formed by plasma treatment or chemical etching.

8. The temple based on the multi-layer composite lamination technology 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 both provided with a gradually changing transition section, and the above gradually changing transition section is a wavy structure or a zigzag structure.

9. The temple based on the multi-layer composite lamination technology according to claim 3, characterized in that: The surface of the inner layer (3) corresponding to the human ear is provided with a plurality of micro-protrusions (6) distributed in an array, and the height of the protrusions is 0.3-1 mm.

10. The temple based on the multi-layer composite lamination technology according to claim 3, characterized in that: [[ID=__9]]The surface of the middle layer (2) corresponding to the inner layer is provided with a plurality of buffer cavities (203) distributed in an array. The above buffer cavities are filled with a flexible gel or a microcellular foaming material.

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