TW202010648A - Housing - Google Patents

Abstract

A housing includes a substrate, a first primer layer and a ceramic layer. The first primer layer is formed between the substrate and the ceramic layer. The substrate is a composite. The substrate includes a metal member and a plastic member, and a joint line is formed at a joint of the metal member and the plastic member. The first primer layer is used to shield the joint line and isolate the substrate. The housing further includes a second a second primer layer. The second primer layer is formed between the first primer layer and the ceramic layer. The second primer layer is further used to shield the joint line.

Description

case

The invention relates to a casing.

At present, the surface treatment of the composite of metal and plastic usually requires six coatings and six bakings plus two grindings. The process is complicated and the process time is longer. In addition, it is usually difficult to form a coating surface with uniform color and gloss on the surface of the composite of metal and plastic parts.

In view of this, it is necessary to provide a housing having an integrally formed appearance.

A casing includes at least a base material and a first primer layer and a ceramic coating layer formed on the surface of the base material in sequence. The base material is a composite part including metal parts and plastic parts. The metal parts and the plastic part A joint line is formed at the joint of the pieces, the first primer layer is used to shield the joint line and isolate the base material, the housing further includes a second primer layer, and the second primer layer Formed between the first primer layer and the ceramic coating, the second primer layer is used to further shield the bonding line.

In summary, the first primer layer, the second primer layer and the ceramic coating layer are formed on the second surface of the substrate in sequence, thereby forming the housing. Among them, the structural arrangement of the casing optimizes the manufacturing process of the casing and reduces the cost. In addition, the arrangement of the double-layer primer (that is, the first primer layer and the second primer layer) of the casing effectively shields the bonding line of the substrate and solves the problem of different materials in the substrate The resulting difference in surface glossiness, morphology, and color makes the shell have an integrated appearance.

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that when a component is said to be "fixed" to another component, it can be directly on another component or it can also exist in a centered component. When a component is considered to be "connected" to another component, it can be directly connected to another component or there can be centered components at the same time. When a component is considered to be "set on" another component, it may be set directly on another component or there may be a centered component at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used in the description of the present invention herein is for the purpose of describing specific embodiments, and is not intended to limit the present invention. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

Referring to FIG. 1, a preferred embodiment of the present invention provides a housing 10. The casing 10 can be applied to electronic devices such as mobile phones and tablet computers.

The casing 10 includes at least a base material 101, a first primer layer 102, a second primer layer 103 and a ceramic coating 104.

The substrate 101 includes a first surface 1011 and a second surface 1013 opposite to the first surface 1011. Wherein, the first surface 1011 can be used as an inner surface of the housing 10 for setting various electronic components, such as antennas, heat dissipation modules, and chips.

In this embodiment, the substrate 101 is a composite part, including a metal part 1012 and a plastic part 1014. A bonding wire 1016 is formed at the junction of the metal part 1012 and the plastic part 1014. The material of the metal piece 1012 may be aluminum alloy, stainless steel, magnesium alloy, zinc alloy, or other metal materials. The material of the plastic part 1014 may be polybutylene terephthalate, composite material of polybutylene terephthalate and glass fiber, polyamide, composite material of polyamide and glass fiber, poly Phenylene sulfide, polyphenylene sulfide and glass fiber composite materials, polyether ether ketone or other engineering plastics.

The first primer layer 102 is formed on the second surface 1013 of the substrate 101 to provide good adhesion to the substrate 101, thereby overcoming the surface of the substrate 101 due to itself being a composite part The problem of poor adhesion. The first primer layer 102 can also be used to fill the gap between the metal part 1012 and the plastic part 1014 in the substrate 101, and fill the gap of the bonding line 1016 and shield the bonding Line 1016.

In this embodiment, the first primer layer 102 is formed by spraying a primer on the second surface 1013 of the substrate 101.

The second primer layer 103 is formed on the surface of the first primer layer 102 for further filling the gap of the bonding line 1016 and shielding the bonding line 1016 to solve the problem caused by different materials in the substrate 101 The resulting difference in surface glossiness, morphology and color makes the casing 10 have an integrated appearance effect.

In this embodiment, the second primer layer 103 is formed by spraying UV paint (Ultraviolet Curing Paint, ultraviolet light curing paint) on the second surface 1013 of the substrate 101. Wherein, the UV paint includes 40-60% of UV epoxy acrylic resin and 40-60% of thinner.

The ceramic coating 104 is formed on the surface of the second primer layer 103. The ceramic coating 104 is used to enhance the hardness and thermal conductivity of the housing 10 and further shield the bonding wire 1016. The thickness of the ceramic coating 104 is 10-150um.

In this embodiment, the ceramic coating 104 is formed by spraying ceramic paint on the surface of the second primer layer 103. The ceramic paint includes 30-60% of the main agent of the ceramic paint, 5-25% of the curing agent and 20-60% of the thinner. Wherein, the main agent of the ceramic paint includes nano ceramic filler and solvent. The ceramic paint main agent contains 2-30% nano ceramic filler. The nano-ceramic filler may be one or more of alumina, silica, titania, or zirconia. The average particle diameter of the nano ceramic filler is 0.01-20um. Wherein, the nano-ceramic filler in the ceramic paint can enhance the hardness of the ceramic coating 104, thereby increasing the hardness of the housing 10. At the same time, the nano-ceramic filler in the ceramic paint can also improve the shielding property of the ceramic coating 104.

In this embodiment, the casing 10 further includes a color layer 105. The specific color of the color layer 105 can be customized according to the needs of users, and can be black, white, blue, etc.

Further, the casing 10 further includes a protective layer 106. The protective layer 106 has anti-fouling capability and is used to protect the casing 10. In this embodiment, the protective layer 106 is formed by spraying topcoat on the surface of the color layer 105. The top coat includes 40-60% acrylic resin and 40-60% thinner. The protective layer 106 can be atomized and/or brightened according to the actual needs of users.

In one embodiment, the protective layer 106 is a transparent layer, so that the color of the color layer 105 can be seen through the protective layer 106, thereby enhancing the appearance and decoration effect of the housing 10.

Furthermore, the casing 10 further includes a pattern layer 107. The pattern layer 107 is formed between the color layer 105 and the protective layer 106. Wherein, the pattern layer 107 may be various graphics, letters, numbers, or trademarks.

The present invention provides a method for preparing a housing 10, which specifically includes the following steps:

Provide a substrate 101. The substrate 101 includes a first surface 1011 and a second surface 1013 opposite to the first surface 1011. Wherein, the first surface 1011 can be used as an inner surface of the housing 10 for setting various electronic components, such as antennas, heat dissipation modules, and chips.

In this embodiment, the substrate 101 is a composite part, including a metal part 1012 and a plastic part 1014. A bonding wire 1016 is formed at the junction of the metal part 1012 and the plastic part 1014. The material of the metal piece 1012 may be aluminum alloy, stainless steel, magnesium alloy, zinc alloy, or other metal materials. The material of the plastic part 1014 may be polybutylene terephthalate, composite material of polybutylene terephthalate and glass fiber, polyamide, composite material of polyamide and glass fiber, poly Phenylene sulfide, polyphenylene sulfide and glass fiber composite materials, polyether ether ketone or other engineering plastics.

Cleaning substrate 101. In one embodiment, after degreasing the substrate 101 with a degreasing agent, the substrate 101 is washed with pure water to clean the surface of the substrate 101 from dust and oil stains.

A first primer layer 102 is formed on the second surface 1013 of the substrate 101. The first primer layer 102 provides good adhesion to the substrate 101 and is used to overcome the problem of poor surface adhesion caused by the substrate 101 as a composite part.

Specifically, a primer is sprayed on the second surface 1013 of the substrate 101 to form the first primer layer 102. The first primer layer 102 is used to fill the gap between the metal part 1012 and the plastic part 1014 in the substrate 101, fill the gap of the bonding line 1016, and shield the bonding line 1016.

A second primer layer 103 is formed on the surface of the first primer layer 102. The second primer layer 103 is used to further fill the gap of the bonding line 1016 and shield the bonding line 1016, so as to solve the surface gloss, morphology and surface caused by different materials in the substrate 101 The difference in color makes the casing 10 have an integrated appearance.

Specifically, a UV paint is sprayed on the surface of the first primer layer 102, irradiated with 800J of ultraviolet light, and cured to form the second primer layer 103. Wherein, the UV paint includes 40-60% of UV epoxy acrylic resin and 40-60% of thinner.

The ceramic coating 104 is formed on the surface of the second primer layer 103. The ceramic coating 104 is used to enhance the hardness and thermal conductivity of the housing 10 and further shield the bonding wire 1016. Wherein, the thickness of the ceramic coating 104 is 10-150um.

Specifically, a ceramic paint is sprayed on the surface of the second primer layer 103 to form the ceramic coating layer 104. The ceramic paint includes 30-60% of the main agent of the ceramic paint, 5-25% of the curing agent and 20-60% of the thinner. Wherein, the main agent of the ceramic paint includes nano ceramic filler and solvent. The ceramic paint main agent contains 2-30% nano ceramic filler. The nano-ceramic filler may be one or more of alumina, silica, titania, or zirconia. The particle size of the nano ceramic filler is 0.01-20um. Wherein, the nano-ceramic filler in the ceramic paint can enhance the hardness of the ceramic coating 104 and improve the shielding property of the ceramic coating 104.

It can be understood that, in order to improve the appearance and decoration effect of the housing 10, a color layer 105 may be formed on the surface of the ceramic coating 104. The specific color of the color layer 105 can be customized according to the needs of users, and can be black, white, blue, etc.

Further, in order to improve the anti-fouling ability of the casing 10, a protective layer 106 may be further formed on the surface of the color layer 105.

Specifically, a top coat is sprayed on the surface of the color layer 105, irradiated with 600-1300J ultraviolet light, and cured to form the protective layer 106. The top coat includes 40-60% acrylic resin and 40-60% thinner.

It can be understood that the protective layer 106 may also be a transparent layer, so that the color of the color layer 105 can be seen through the protective layer 106, thereby enhancing the appearance and decorative effect of the housing 10.

Of course, in order to further improve the appearance and decoration effect of the housing 10, the protective layer 106 may also be atomized and/or brightened.

Furthermore, the pattern layer 107 may be formed between the color layer 105 and the protective layer 106. The pattern layer 107 may be various graphics, letters, numbers, or trademarks.

Perform a hardness test on the housing 10:

The hardness of the casing 10 is tested by using the coating film hardness pencil measurement method, and the hardness of the casing 10 is measured to be greater than 2H.

In summary, the first primer layer 102, the second primer layer 103, and the ceramic coating layer 104 are formed on the second surface 1013 of the substrate 101 in sequence, and then the housing 10 is formed. Among them, the structural arrangement of the housing 10 optimizes the manufacturing process of the housing 10 and reduces the cost. In addition, the arrangement of the double-layer primer (that is, the first primer layer 102 and the second primer layer 103) of the housing 10 effectively shields the bonding line 1016 of the substrate 101, and solves the problem The difference in surface glossiness, morphology and color caused by different materials in the substrate 101 makes the housing 10 have an integrated appearance.

In summary, the present invention meets the requirements of the invention patent, and the patent application is filed in accordance with the law. However, the above are only preferred embodiments of the present invention. For those who are familiar with the skills of this case, equivalent modifications or changes made in accordance with the spirit of the present invention should be covered by the following patent applications.

10: Shell 101: substrate 1011: first surface 1012: Metal parts 1013: Second surface 1014: Plastic parts 1016: Bonding line 102: the first primer layer 103: Second primer layer 104: ceramic coating 105: color layer 106: protective layer 107: pattern layer

FIG. 1 is a schematic cross-sectional view of a housing according to a preferred embodiment of the present invention.

no

10: Shell

101: substrate

1011: first surface

1012: Metal parts

1013: Second surface

1014: Plastic parts

1016: Bonding line

102: the first primer layer

103: Second primer layer

104: ceramic coating

105: color layer

106: protective layer

107: pattern layer

Claims (10)

A casing includes at least a base material and a first primer layer and a ceramic coating layer formed on the surface of the base material in sequence, the improvement is that the base material is a composite part, including a metal part and a plastic part A joint line is formed at the joint with the plastic part, the first primer layer is used to shield the joint line and isolate the substrate, and the housing further includes a second primer layer, the first A second primer layer is formed between the first primer layer and the ceramic coating, and the second primer layer is used to further shield the bonding line. The casing as described in item 1 of the patent application scope, wherein the second primer layer is formed by spraying UV paint on the surface of the first primer layer and curing by irradiation with 800J ultraviolet light, the UV paint includes 40-60% UV epoxy acrylic resin and 40-60% thinner. The casing as described in item 1 of the patent application scope, wherein the thickness of the ceramic coating is 10-150um. The casing according to item 1 of the patent application scope, wherein the ceramic coating is formed by spraying ceramic paint on the surface of the second primer layer, the ceramic paint including 30-60% of the main agent of ceramic paint, 5-25% curing agent and 20-60% diluent, wherein the ceramic paint main agent contains 2-30% nano ceramic filler. The casing as described in item 4 of the patent application range, wherein the nano-ceramic filler may be one or more of alumina, silica, titania, or zirconia. The casing as described in item 5 of the patent application scope, wherein the particle diameter of the nano-ceramic filler is 0.01-20um. The casing as described in item 1 of the patent application scope, wherein the casing further includes a color layer formed on the surface of the ceramic coating. The casing as described in item 7 of the patent application scope, wherein the casing further includes a protective layer, the protective layer is sprayed with topcoat on the surface of the color layer, and irradiated with ultraviolet light of 600-1300J, and then Formed by curing. The casing as described in item 8 of the patent application scope, wherein the topcoat includes 40-60% acrylic resin and 40-60% thinner. The casing as described in item 8 of the patent application scope, wherein the casing further includes a pattern layer formed between the color layer and the protective layer, the pattern layer may be various types of graphics , Letters, numbers, or trademarks.

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