TWM527386U - Housing structure for electronic device - Google Patents

Description

Shell structure

The present invention relates to a housing structure, in particular to a housing structure in which different materials are bonded together.

According to injection molding, it has been widely used in various fields of life, such as plastic cups, pudding cups and other food industries, medicine bottles, syringes and other medical industries, mobile phone cases, memory card shells and other electronics industries, cream jars, lotions Such consumer products, and high-precision optical plastics industry, such as lenses, are inseparable from the application of plastic injection molding.

Although the plastic injection molding technology is very mature, there are still difficulties. For example, many objects are molded out of metal on the metal, but the metal itself is difficult to bond with other materials, so it is necessary to first apply an adhesive layer on the metal, such as double After the glue or glue, the metal can be put into the mold for injection molding. As a result, the adhesive may contaminate the mold and increase the thickness of the finished product. However, many finished products are light and thin, such as metal mobile phone cases. There is still some plastic pores inside or at the corners, which is plastic injection molding on the metal. If an adhesive is used, the thickness will increase. In addition to this deficiency, the application of the adhesive to the joint of metal and plastic is insufficient, and the peeling of the plastic and the metal often occurs, and the finished product is damaged.

Therefore, the present invention proposes a casing structure which can directly join two different materials into one casing without using an adhesive, which effectively solves the above problems, and the specific structure and its implementation will be described in detail below:

The main purpose of the present invention is to provide a shell structure which forms a plurality of nanopores on the surface of the first layer, so that materials such as metal, carbon fiber, glass fiber and the like which are not easily adhered to the plastic can be made by nanopores. Combined with the height of the plastic, a second layer of plastic is formed, and the degree of bonding between the first layer and the second layer is higher than that by using double-sided tape and glue.

Another object of the present invention is to provide a casing structure in which the nanoporous system of the surface of the first layer is formed by electrochemical means without causing environmental pollution.

A further object of the present invention is to provide a casing structure which can not only achieve the closeness of the first layer of metal or carbon fiber or glass fiber material and the second layer of plastic injection molding, and has low cost. Save on plastic usage.

To achieve the above object, the present invention provides a housing structure including a first layer and a second layer, wherein the first layer further includes a first surface and a second surface, and is electrochemically treated on the second surface. The method is formed with a plurality of nanopores: the second layer is formed on the second surface of the first layer by injection molding, and the second layer is tightly combined with the nanopores on the second surface of the first layer. The double-layered shell structure is as close as one piece.

The material of the first layer is a metal such as aluminum, magnesium, copper, stainless steel, titanium or iron, or a substrate such as carbon fiber or glass fiber.

The second layer is a plastic such as polyphenylene sulfide (PPS), polybutylene terephthalate (PBT) or polyamide resin (PA66).

The bonding strength between the first layer and the second layer is 200 to 220 kilograms per square centimeter (kgf / cm ² ).

The size of the nanopore is 20~80 nm.

The housing structure can be a mobile phone case, a computer screen frame, or any other object that combines metal and plastic, or other materials such as carbon fiber, glass fiber, and the like.

The electrochemical treatment is electrolysis with an electrolysis parameter of 10 to 65 volts.

The present invention provides a housing structure. FIGS. 1 and 2 are a perspective view and an exploded view of an embodiment of the present invention. The housing structure 10 in this embodiment is a mobile phone back cover, and the housing structure 10 includes a first layer. 12 and a second layer 14, wherein the first layer 12 further includes a first surface 122 and a second surface 124. In this embodiment, the first surface 122 is an outer surface and the second surface 124 is an inner surface. On the second side 124, a plurality of nanopores 126 are formed by electrochemical treatment, and the nanopores 126 are distributed in a place where the second layer 14 needs to be covered without being covered by the second layer 14. The nanopores 126 may not be formed: the second layer 14 is formed on the second side 124 of the first layer 12 by injection molding, and the second layer 14 is on the second side 124 of the first layer 12. The nanopores are tightly bonded into a double shell structure 10.

The first layer 12 is made of metal such as aluminum, magnesium, copper, stainless steel, titanium or iron, or carbon fiber, glass fiber, etc., the same feature is not easy to combine with plastic, and the second layer 14 is polyphenylene sulfide (PPS), Plastics such as polybutylene terephthalate (PBT) or polyamide resin (PA66), the plastic of the second layer 14 will penetrate deep into the second surface 124 of the first layer 12 during the injection molding process. In the aperture 126, similar to the rooting of the second side 124, the first layer 12 and the second layer 14 are brought to a highly tight degree of bonding.

The electrochemical treatment of the first layer 12 is electrolysis, the first layer 12 is immersed in an electrolyte solution, and when energized into the electrolyte solution, the electrolyte solution decomposes and chemically reacts with the first layer 12, which will be the first The layer 12 dissociates the holes one by one, and then produces nano-scale micro-holes on the surface of the first layer 12. According to different materials and the required size of the nano-pore, different electrolysis parameters and electrolyte solutions are used together. In one embodiment, the electrolysis parameter is 10 to 65 volts, and the nanopore 126 has a size ranging from 20 to 80 nm.

By creating a plurality of nano-micropores 126 formed on the second side 124 of the first layer 12, the second layer 14 is infiltrated into the nano-layer 124 when it is injection molded onto the second side 124 of the first layer 12. In the micropores 126, the adhesion between the first layer 12 and the second layer 14 is further enhanced, so that the bonding strength between the first layer 12 and the second layer 14 can reach 200 to 220 kgf / cm ² (kgf / cm ^{2 ).} ), the bonding strength of the double-sided adhesive or glue is increased by 50 times.

The shell structure of the present invention can be widely applied to a mobile phone case, a computer screen frame, a locomotive car shell, a car skeleton, or any object combining metal and plastic, or a combination of a substrate such as carbon fiber and glass fiber and plastic. The first layer can be seamlessly joined to the second layer of plastic material to form a nearly one-piece.

The third figure is a schematic diagram of an embodiment of a smart phone case. The outer casing of the smart phone is made of metal, but the inside of the smart phone is molded with plastic components, such as buttons, battery slots, etc., the metal casing is The first layer 12 and the plastic portion are the second layer 14, forming the shell structure of the present invention.

Fig. 4 is a schematic view showing an embodiment of a mobile phone battery cover. The outer casing of the mobile phone is made of metal, and the battery cover itself is also the first layer 12 of metal material. However, in order to avoid leakage, the inner layer is formed with a plastic layer, which is the second layer 14.

Fig. 5 is a schematic view showing an embodiment of a camera casing as an embodiment. In the outer casing of the camera, the square body is the first layer 12 of metal material viewed from the outside, but also in order to avoid leakage or electromagnetic interference, the plastic layer is formed on the inner side, which is the second layer 14.

Figure 6 is a schematic diagram of the creation of a computer screen outside the frame. The outer frame of the computer screen is made of metal, but if the outer frame is disassembled, it can be seen that there is a plastic structure as the outer frame of the engaging structure, the metal material is the first layer 12, and the plastic piece is the first. The second layer 14 produced by the molding is sprayed onto the layer 12.

Figure 7 is a schematic view of the creation of the mouse case. The surface of the mouse is plastic, but the inner side of the left and right buttons are provided with electrical contacts. The electrical contacts are made of metal, so the mouse is also The application of this creation can avoid the use of the mouse for a long time, excessive clicks to make the electrical contacts fall off, and reduce the thickness of the mouse shell.

Figure 8 is a schematic view showing the locomotive case as an embodiment. The locomotive's car shell is made of plastic material, but in order to protect the line and the fuel tank, there is a metal structure on the inner side of the front baffle and the side plates of the body to reinforce the sturdiness of the locomotive. The application of the second layer 14 is combined.

Please refer to Figure 9, which is a schematic diagram of the automobile car shell as an example. The air outlet on the front side of the car is also applicable to the creation. The cover is made of metal and plastic. The structure can prevent the baffle of the air outlet from peeling off the metal and the plastic due to the impact.

In summary, the present invention provides a casing structure that electrochemically forms nanopores on the surface of the first layer and forms a second layer on the surface of the first layer to make materials such as metal, carbon fiber, and glass. Fibers and other materials that are not easily adhered to plastics can be combined with the second layer of plastic material by nano-pores. The bonding strength is 50 times higher than that of double-sided adhesive or glue. The cost is low and the amount of plastic is saved. .

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any change or modification of the characteristics and spirit described in the scope of this application shall be included in the scope of the patent application for this creation.

10‧‧‧Shell structure
12‧‧‧ first floor
122‧‧‧ first side
124‧‧‧ second side
126‧‧Nemi micropores
14‧‧‧ second floor

Figure 1 is a perspective view of an embodiment of the present invention. Figure 2 is an exploded view of one embodiment of the present invention. The third figure is a schematic diagram of an embodiment in which the outer casing of the smart phone is created. Fig. 4 is a schematic view showing an embodiment of a mobile phone battery cover. Fig. 5 is a schematic view showing an embodiment of a camera casing as an embodiment. Figure 6 is a schematic diagram of the creation of a computer screen outside the frame. Fig. 7 is a schematic view showing the creation of a mouse case as an embodiment. Figure 8 is a schematic view showing the locomotive case as an embodiment. Figure 9 is a schematic view of an automobile car shell as an embodiment.

12‧‧‧ first floor

122‧‧‧ first side

124‧‧‧ second side

126‧‧Nemi micropores

14‧‧‧ second floor

Claims (8)

A housing structure comprising: a first layer comprising a first surface and a second surface opposite to each other, wherein the second surface is electrochemically formed with a plurality of nanopores: and a second layer Formed on the second side of the first layer by injection molding, the second layer and the nano micropores on the second side of the first layer are tightly combined to form a double shell structure. The shell structure according to claim 1, wherein the material of the first layer is a metal such as aluminum, magnesium, copper, stainless steel, titanium or iron, or a substrate such as carbon fiber or glass fiber. The shell structure of claim 1, wherein the second layer is a plastic such as polyphenylene sulfide (PPS), polybutylene terephthalate (PBT) or polyamide resin (PA66). The shell structure according to claim 1, wherein the first layer and the second layer have a bonding strength of 200 to 220 kgf / cm ² . The shell structure of claim 1, wherein the nanopore has a size of 20 to 80 nm. The housing structure of claim 1, wherein the housing structure can be a mobile phone case, a computer screen frame, or any other metal or plastic bonded object, or other carbon fiber, glass fiber and other substrates combined with plastic. Objects. The housing structure of claim 1, wherein the electrochemical treatment is electrolysis. The shell structure of claim 7, wherein the electrolytic parameter of the electrolytic treatment is 10 to 65 volts.