TWI457234B - Shell - Google Patents

Description

case

The present invention relates to the field of materials and structures, and more particularly to a housing.

At present, the development of housings for mobile phones, electrical appliances, computers and the like has made great progress. In the prior art, the conventional housing is made of metal material or plastic. However, although the metal material is strong, it is heavy, it consumes precious metal resources and is not easy to carry. The plastic is thick and not strong enough, it is easily affected by the environment, and it may be loose, or it may be pressed to the internal circuit. Or parts. Apple 's patented "Reinforced Device Housing" uses multiple layers of carbon fiber or the same material used in the trunk and frame with carbon fiber. The use of outer frames or multi-layer materials ensures the strength of the fibers in different directions and solves the problem that carbon fibers are fragile at specific angles. The ultimate goal is to replace the oversized housing made of metal. However, mass production and costs remain the bottleneck. Therefore, the iPhone 5 and iPad 3 are still not available as scheduled. The thermosetting carbon fiber shell must be ground and recoated, and the soil grinding requires a lot of manpower and high pollution, which is the reason why the production cost cannot be reduced and mass production cannot be achieved. The elastic layer of the invention does not need to be replenished, and the cost can be effectively reduced. The thermoformed carbon fiber shell can be directly coated, but not strong enough to meet structural requirements. The carbon fiber shell and the plastic body can be mass-produced. The current technology is to bond the carbon fiber shell and the plastic body with an adhesive. The adhesive is not chemically bonded, and the strength and quality cannot meet the structural requirements. The elastic layer of the present invention chemically bonds the carbon fiber casing and the plastic when the plastic is injected, and has no problem in strength and quality, and can be mass-produced.

A casing retains the advantages of carbon fiber material, and overcomes the bottleneck of low production cost and mass production.

In view of the foregoing technical problems, it is an object of the present invention to provide a housing which can be mass-produced without the need for soil filling.

The object of the present invention is achieved by the following technical solution: a casing comprising: a composite fiber body, an elastic layer bonded to the composite fiber body, and a plastic body bonded to the elastic layer.

Further, the composite fibrous body is a thermosetting fibrous body or a thermoplastic fibrous body.

Further, the fibers in the composite fibrous body are long fibers or short fibers.

Further, the elastic layer comprises a thermoplastic elastomer.

Further, the thermoplastic elastomer comprises a polyurethane resin or a polyamide resin.

Further, the elastic layer comprises a thermoplastic elastomer and a hot melt colloid.

Further, the plastic body comprises a polyamide resin, an ABS resin, a polycarbonate resin, a PC/ABS resin, a polyamide resin mixed with glass fibers or carbon fibers, a polycarbonate resin, an ABS resin, a PC resin, a PC/ABS resin, and a PP. One or more of a resin or a polymethyl methacrylate resin.

Further, the composite fiber body, the elastic layer and the plastic body are combined in such a manner that the composite fiber body and the elastic layer are integrated by heating and pressing, and then combined with the plastic body. Alternatively, the composite fibrous body to which the elastic layer is added and the plastic body to which the elastic layer is added are integrated by heating and pressurization.

Further, the number of layers of the elastic layer is a single layer, or the number of layers is a plurality of layers.

By using the technical solution of the present invention, it is possible to overcome the defects such as insufficient rigidity caused by using only plastic, and the housing is durable and light, and the production cost is low, and mass production can be achieved.

The present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the present invention provides a casing comprising: a composite fiber body 1 , an elastic layer 2 bonded to the composite fiber body 1 , which is bonded to the elastic layer 2 Plastic body 3.

An example of the housing advantages of this construction is illustrated. Such as mobile phones, the case of the mobile phone is generally metal, the metal case is too heavy, wasting resources. Or the casing of the electrical appliance is a combination of the composite fiber body and the plastic body. Generally, the composite fiber body and the plastic body are bonded by an adhesive, and it takes a long time to react, and the cost is high quality and difficult to control, and cannot be large. Volume production. It is also completely made of composite fiber body, but the disadvantage is that the success rate is small. It is a waste of time to cut the joint with a computer, and there are many flash edges and higher cost. The above disadvantages can be overcome only by the combination of the three materials used in the present invention. The composite fiber body is sturdy and lightweight, and the plastic body can be combined to form a perfect shell. Such a casing can be used to manufacture the casing of 3C electrical products such as mobile phones, notebooks, etc., and to manufacture small accessories for sporting goods, such as pedals for bicycles, outsole for bicycles and other uses, and spare parts for motorcycles.

Further, the composite fibrous body 1 is a thermosetting fibrous body or a thermoplastic fibrous body.

Further, the fibers in the composite fibrous body 1 are long fibers or short fibers. Long fibers have better strength, and short fibers can be used for parts that do not require too high strength, and short fibers are less expensive than long fibers.

Further, the elastic layer 2 contains a thermoplastic elastomer. The thermoplastic elastomer is a rubber having elasticity at normal temperature and a plasticizable body at a high temperature.

Further, the thermoplastic elastomer comprises a polyurethane resin or a polyamide resin. Polyurethane resins have good oil resistance, toughness, abrasion resistance, aging resistance and adhesion. The polyamide resin has non-toxicity, light weight, excellent mechanical strength, wear resistance and good corrosion resistance.

Further, the elastic layer 2 comprises a thermoplastic elastomer and a hot melt colloid. The hot melt colloid can reinforce the thermoplastic elastomer. Can be applied to sports goods to increase the torsion resistance.

Further, the plastic body comprises a polyamide resin, an ABS resin, a polycarbonate resin, a PC/ABS resin, a polyamide resin mixed with glass fibers or carbon fibers, a polycarbonate resin, an ABS resin, a PC resin, a PC/ABS resin, and a PP. One or more of a resin or a polymethyl methacrylate resin. A polyamide resin mixed with glass fiber or carbon fiber is stronger than a polyamide resin and is resistant to high temperatures.

Further, the composite fiber body 1, the elastic layer 2 and the plastic body 3 are combined in such a manner that the composite fiber body 1 and the elastic layer 2 are integrated by heating and pressing, and then combined with the plastic body 3, and the bonding mode is suitable. The overall combination and manufacture of a relatively thin, small housing. Alternatively, the composite fibrous body to which the elastic layer 2 is added 1 The plastic body 3 to which the elastic layer 2 is added is integrated by heating and pressurization. This method is more suitable for the manufacture of large finished parts.

The plastic body 3 in the above embodiment may be bonded, that is, combined with the elastic layer 2 by injection molding.

Further, the number of layers of the elastic layer 2 is a single layer, or the number of layers is a plurality of layers. The single layer will be lighter and thinner, and the multilayer will be stronger.

The present invention has been described in detail with reference to the embodiments of the present invention. The principles and embodiments of the present invention are described herein. The description of the above embodiments is only for helping to understand the core idea of the present invention; In the meantime, the present invention is not limited by the scope of the present invention.

1‧‧‧ represents composite fiber body

2‧‧‧ represents the elastic layer

3‧‧‧ represents the plastic body

1 is a three-dimensional view of a casing in an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1, FIG. 3 is a three-dimensional view of the casing in another embodiment of the present invention; and FIG. 4 is a cross-sectional view taken along line A-A of FIG.

Figure 1 is a three-dimensional schematic view of the housing of the present invention;

Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

3 is a three-dimensional schematic view of a housing in another embodiment of the present invention;

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Claims (7)

The casing comprises: a composite fibrous body 1, an elastic layer 2 bonded to the composite fibrous body 1, and a plastic body 3 bonded to the elastic layer 2. According to the casing of claim 1, the composite fibrous body comprises: a thermosetting fibrous body and a thermoplastic fibrous body. According to the casing of claim 1, the fibers in the composite fiber body include: long fibers or short fibers. According to the casing of claim 1, the elastic layer comprises: a thermoplastic polyurethane resin or a polyamide resin. According to the casing of claim 1, the elastic layer comprises: a thermoplastic elastomer and a hot melt colloid. According to the casing of claim 1, the plastic body comprises: polyamide resin, ABS resin, polycarbonate resin, PC/ABS resin, polyamide resin mixed with glass fiber or carbon fiber, polycarbonate resin, ABS resin. One or more of PC resin, PC/ABS resin, PP resin, and polymethyl methacrylate resin. According to the shell of the first application scope of the patent application, the application scope includes the outer casing of 3C electrical products, sports and medical equipment accessories, soles and shoe accessories, and spare parts for steam locomotives.