Eco Screw

Abstract

Provided is an eco-screw having biodegradability or being biodegradable, lightweight, and non-conductive. 【Solution means】The eco-screw according to one embodiment includes a head and a screw part integrally connected. The improvement part of this embodiment is that the head and the screw part are manufactured by an injection molding device from a biodegradable material, and the eco-screw has a parting line located in the axial longitudinal section of the eco-screw. The eco-screw according to this embodiment has the advantages of being biodegradable or biodegradable, lightweight, low-cost, and non-conductive.

Description

Technical Field

[0001] This utility model relates to the structure of screws, and particularly to biodegradable or eco-screws that can be decomposed.

Background Art

[0002] Screws are an important invention when human society entered industrialization and are also common connecting parts. The main role of screws is to connect two objects or fix an object.

[0003] Conventional screws are generally made of metal or plastic materials. The structure of screws mainly includes a head and a threaded part. The head of the screw generally has grooves or holes for corresponding tools such as drivers to fit and turn the screw. Also, the heads of some screws are hexagonal or of special shapes and can be fitted with wrenches or special tools. The threaded part is cylindrical and has threads on its outer surface.

[0004] Threads are concave-convex patterns surrounding the axis of the screw. When the screw is rotated, due to the interaction between the threads and the objects it contacts (such as nuts or screw holes in objects), the screw can be gradually tightened onto the object or nut during the rotation process. Screws can usually be removed or tightened again without losing their function, so they can be reused.

[0005] Screws are very common and indispensable necessities in daily life. Their application fields are very wide and they are widely used in the electronics industry, household appliance industry, communication equipment industry, medical equipment industry, automobile manufacturing industry, computer industry, and special equipment industry. In daily life, from watches and glasses to trains, ships, and airplanes, screws are used in all visible items and equipment of people.

[0006] However, conventional screws are often made of metal or plastic materials. Screws made of metal materials have problems such as being prone to rust, having conductivity, being heavy, being difficult to recycle, and not being naturally decomposable. Another plastic screw has problems such as not being naturally decomposable and being prone to causing environmental pollution.

Summary of the Invention

Problems to be Solved by the Invention

[0007] The technical problem to be solved by the present invention is to provide an eco-screw that is biodegradable or biodegradable, lightweight, and non-conductive.

Means for Solving the Problems

[0008] In order to solve the above technical problems, a preferred embodiment of the eco-screw according to the present invention includes a head and a screw portion integrally connected to the head. The head and the screw portion are manufactured from a biodegradable material by an injection molding device, and the eco-screw has a parting line located in the axial longitudinal section of the eco-screw.

[0009] As a preferred embodiment of the eco-screw according to the present invention, the biodegradable material is made by mixing natural materials with biodegradable plastics, and the natural materials include bamboo powder, sugarcane, potato, wheat, cassava, corn starch bio.

[0010] As a preferred embodiment of the eco-screw according to the present invention, the biodegradable material is made by mixing natural materials with recyclable plastics, and the natural materials include bamboo powder, sugarcane, potato, wheat, cassava, corn starch bio.

[0011] As a preferred embodiment of the eco-screw according to the present invention, the biodegradable material is made from a mixture of polylactic acid (PLA) resin and bamboo powder.

[0012] As a preferred embodiment of the eco-screw according to the present invention, the biodegradable material is made from a mixture of polylactic acid (PLA) resin and bamboo fiber.

[0013] As a preferred embodiment of the eco-screw according to the present invention, the biodegradable material is polybutylene succinate (PBS).

[0014] As a preferred embodiment of the eco-screw according to the present invention, the biodegradable material is made from a mixture of natural plant fiber powder containing any one of bamboo fiber and bamboo powder and a plant adhesive containing any one of natural resin and pine sap.

[0015] The advantages and effects of the eco-screw according to the present invention are non-conductivity, electromagnetic interference resistance, light weight, rust prevention, low cost, and decomposability after disposal. It can be applied to many industries, cause no environmental pollution, and reduce the consumption of metal resources.

[0016] The specific embodiments of the present invention, their technical features and effects will be described below with reference to the accompanying drawings.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3A

Figure 3B

Figure 3C

Figure 4

Mode for Carrying Out the Invention

[0018] In the embodiments disclosed in the specification and drawings of the present invention, the directions described therein (e.g., up, down, left, right, front, back) are based on the content shown in the drawings and are used to explain the relative relationships (e.g., positional relationship, connection relationship, and operational relationship) between the elements or structures in the embodiments. In principle, when the elements or structures described in the specification of the present invention coincide with the positions shown in the drawings, the described directions are appropriate. When the positions of the elements or structures described in the specification of the present invention are changed, the described directions should also be changed accordingly.

[0019] First, refer to FIGS. 1 and 4, which are the structural diagram and the structural cross-sectional view of an embodiment of the eco-screw according to the present invention. The preferred embodiment of the eco-screw S according to the present invention includes a head 10 and a screw portion 20 integrally connected to the head 10 (see FIG. 4). The head 10 has a groove or hole 11 for a corresponding tool such as a driver to fit and turn the screw. The shapes of the grooves include the commonly seen cross shape (see FIG. 3A), straight shape (see FIG. 1), hexagonal hole (see FIG. 3B), plum blossom hole, star hole (polygonal hole), and other shapes applicable to special purposes, but are not limited thereto. In other preferred embodiments, the shapes of the head 10 include the commonly seen hexagonal prism (see FIG. 3C), countersunk flat head shape (see FIG. 1), cylindrical shape (see FIG. 3B), but are not limited thereto. Here, the hexagonal prism head 10 shown in FIG. 3C generally does not have a groove or hole 11, and for example, a wrench or the like can be used to directly rotate the hexagonal prism head 10.

[0020] The improved part of the eco-screw according to the present invention is that the eco-screw S is manufactured by an injection molding device from a biodegradable material. In other words, the head 10 and the screw portion 20 of the eco-screw S are integrally connected members, and the eco-screw S has a parting line L (see FIG. 2) located in the axial longitudinal section of the eco-screw S.

[0021] In a preferred embodiment of the eco-screw S according to the present invention, the biodegradable material is made by mixing a natural material with a biodegradable plastic, and the natural material includes bamboo powder, sugarcane, potato, wheat, cassava, corn starch bio.

[0022] In another preferred embodiment of the eco-screw S according to the present invention, the biodegradable material is made from a mixture of polylactic acid (Polylactide, abbreviated as PLA) resin and bamboo powder. In another preferred embodiment, the biodegradable material is made from a mixture of polylactic acid (PLA) resin and bamboo fiber. The bamboo fiber is a bamboo fiber extracted by processing naturally grown bamboo by mechanical or physical methods. The bamboo powder is obtained by pulverizing natural bamboo into a powder form, and the particle size of the bamboo powder can be classified into millimeter level (10 -3 m), micrometer level (10 -6 m), nanometer level (10 -9 m).

[0023] As a more preferred embodiment of the eco-screw S according to the present invention, the biodegradable material is polybutylene succinate (PBS). In another preferred embodiment, the biodegradable material is made by mixing natural plant fiber powder containing any one of bamboo fiber and bamboo powder with a plant binder containing any one of natural resin and pine sap.

[0024] Most of the aforementioned biodegradable materials are also called biodegradable plastics or green and sustainable plastics. Among them, polybutylene succinate (PBS) is completely environmentally friendly, non-toxic, and has the property of being decomposed by the biological environment. After being embedded, it can be decomposed into water, carbon dioxide and methane through light, heat, oxygen, moisture, microorganisms, etc. in the external environment and be reduced to the natural environment.

[0025] The eco-screw S according to the present invention has advantages such as non-conductivity, electromagnetic interference resistance, light weight, rust prevention, low cost, biodegradability or decomposability, and can be applied to many industries including the electronics industry, home appliance industry, communication equipment industry, medical equipment industry, automobile manufacturing industry, computer industry, and special equipment industry.

Explanation of symbols

[0026] 10 Head, 11 Hole, 20 Thread part, L Partition line, S Eco-screw

Claims

1. An eco-screw including a head and a threaded portion integrally connected to the head, wherein the head and the threaded portion are manufactured by an injection molding device from a biodegradable material, and the eco-screw has a parting line located in the axial longitudinal section of the eco-screw.

2. The biodegradable material is made by mixing a natural material with a biodegradable plastic, and the natural material includes bamboo powder, sugarcane, potato, wheat, cassava, corn starch bio. The eco-screw according to claim 1.

3. The biodegradable material is made by mixing a natural material with a recyclable plastic, and the natural material includes bamboo powder, sugarcane, potato, wheat, cassava, corn starch bio. The eco-screw according to claim 1.

4. The biodegradable material is made from a mixture of polylactic acid (PLA) resin and bamboo powder. The eco-screw according to claim 1.

5. The biodegradable material is made from a mixture of polylactic acid (PLA) resin and bamboo fiber. The eco-screw according to claim 1.

6. The biodegradable material is polybutylene succinate (PBS). The eco-screw according to claim 1.

7. The biodegradable material is made by mixing a natural plant fiber powder containing either bamboo fiber or bamboo powder with a plant adhesive containing either natural resin or pine sap. The eco-screw according to claim 1.

8. The head has a groove or a hole for a corresponding tool to fit and rotate. The eco-screw according to claim 1.

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