CN216357596U - Compound center shell and electronic equipment - Google Patents

Abstract

The utility model discloses a composite middle frame shell which comprises a middle frame, wherein an earphone hole site is formed in the side wall of the middle frame, and a first primer layer is printed on the outer surface of the earphone hole site; a second primer layer is printed on one surface of the first primer layer, which is far away from the outer surface of the hole site of the earphone; the side of the second primer layer, which is far away from the first primer layer, is printed with a first protective layer, and the first protective layer is printed with a second protective layer. The utility model also discloses electronic equipment comprising the composite middle frame shell. Compared with the prior art, beneficial effect lies in: the two priming paint layers are printed on the earphone hole site, so that the earphone hole site has metal texture, the visual effect of the earphone hole site is improved, spraying is replaced by a pad printing mode, the loss of printing ink is reduced, the production cost is reduced, and the anti-scraping and wear-resisting performance of the earphone hole site is improved by pad printing the two protective layers on the priming paint layers.

Description

Compound center shell and electronic equipment

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of electronic product shells, in particular to a composite middle frame shell and electronic equipment using the same.

[ background of the utility model ]

In the manufacturing process of electronic products, such as mobile phones, the position of an earphone hole on a middle frame needs to be painted and decorated, at present, the painting and decoration of the position of the earphone hole is usually carried out in a spraying, transfer printing or silk-screen primer way, and when the earphone hole is sprayed with ink, because the area of the middle frame is far larger than the area of a spraying position of the earphone hole, the cost is inevitably lost in the automatic line body operation, the mass production is not facilitated, and the spraying yield is low due to oil flying easily caused in the spraying process; when the hole position of the earphone is subjected to transfer printing or silk-screen printing, the transfer printing is difficult to pass a vibration wear-resistant test due to poor scratch resistance and wear resistance.

Accordingly, there is a need for a composite bezel housing and an electronic device that overcomes the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims to provide a composite middle frame shell and electronic equipment, and aims to solve the problems that the cost is increased due to the fact that the area of an earphone hole site is small when primer is sprayed, oil is easy to fly in the process, and vibration abrasion resistance testing is difficult to pass when primer is subjected to pad printing or silk-screen printing.

In order to achieve the purpose, the utility model provides a composite middle frame shell which is characterized by comprising a middle frame, wherein an earphone hole site is formed in the side wall of the middle frame, and a first primer layer is printed on the outer surface of the earphone hole site; a second primer layer is printed on the surface, facing away from the outer surface of the earphone hole site, of the first primer layer; the side, deviating from the first priming paint layer, of the second priming paint layer is printed with a first protective layer, and a second protective layer is printed on the first protective layer.

In a preferred embodiment, the first protective layer and the second protective layer are both UV varnish.

In a preferred embodiment, the first primer and the second primer are both a mixture of aluminum powder and ink.

In a preferred embodiment, characterized in that the thickness of the first primer layer and the second primer layer is 5 μm to 10 μm, respectively.

In a preferred embodiment, the first protective layer and the second protective layer each have a thickness of 5 μm to 10 μm.

Another aspect of the present invention provides an electronic device, which includes the composite middle frame casing described in any one of the above embodiments.

Compared with the prior art, the dispensing pressure maintaining jig has the beneficial effects that: the two priming paint layers are printed on the earphone hole site, so that the earphone hole site has metal texture, the visual effect of the earphone hole site is improved, spraying is replaced by a pad printing mode, the loss of printing ink is reduced, the production cost is reduced, and the anti-scraping and wear-resisting performance of the earphone hole site is improved by pad printing the two protective layers on the priming paint layers.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of a frame according to the present invention;

fig. 2 is a cross-sectional view of the present invention frame.

In the figure:

10. a middle frame; 101. an earphone hole position; 11. a first primer layer; 111. a second primer layer; 12. A first protective layer; 121. and a second protective layer.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous effects of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides a composite middle frame shell, which is mainly used for solving the problems that the cost is high and oil flying is easily caused when a primer is sprayed, and the scraping and wear resistance of pad printing is poor and the vibration and wear resistance test is difficult to pass when the primer is used for pad printing or silk-screen printing.

In an embodiment of the present invention, as shown in fig. 1-2, a composite middle frame casing 100 includes a middle frame 10, an earphone hole 101 formed on a sidewall of the middle frame 10, and a first primer layer 11 printed on an outer surface of the earphone hole 101; a second primer layer 111 is printed on the side of the first primer layer 11 facing away from the outer surface of the earphone hole site; a first protective layer 12 is printed on the side of the second primer layer 111 facing away from the first primer layer 11, and a second protective layer 121 is printed on the first protective layer 12.

It should be noted that, the printing mode in this embodiment adopts the mode of bat printing, the bat printing technology is very simple, adopt steel (or copper, thermoplastic plastics) intaglio, utilize the curved surface bat printing head that silicon rubber material made, dip in the printing ink on the intaglio to the surface of bat printing head, then press down to the object surface that needs and just can print out characters, patterns etc. it has very obvious advantage in printing on the product of small area, concave-convex surface, therefore very be fit for giving the little earphone hole site 101 of area japanning decoration in this embodiment, and the effectual bat printing efficiency that promotes of easy operation.

As can be understood, the first primer layer 11 and the second primer layer 111 are printed on the earphone hole site 101 in a pad printing manner, instead of a spraying manner, so that the ink loss is reduced, the production cost is reduced, the phenomenon of oil splashing in the operation process is avoided, and the yield is improved; by pad printing the first protective layer 12 and the second protective layer 121 on the second primer, the wear and scratch resistance effects of the first primer layer 11 and the second primer layer 111 are increased, and the test requirements of vibration wear resistance are further met.

Further, in this embodiment, the first primer layer 11 and the second primer layer 111 are made by mixing aluminum powder with a certain particle size and ink, so that the ink has a certain physical shielding property and presents metallic luster and texture, and the hand feeling and the aesthetic feeling of the middle frame 10 are improved. In the present embodiment, the thicknesses of the first primer layer 11 and the second primer layer 111 are 5 μm to 10 μm, respectively.

Further, in this embodiment, the first protective layer 12 and the second protective layer 121 are UV varnish, and the UV varnish is a transparent paint, which may also be referred to as UV varnish. The effect is that after the paint is sprayed or rolled on the surface of a base material, the paint is converted from a liquid state into a solid state through the irradiation of a UV lamp, so that the surface is hardened, the scratch and scratch resistant effect is achieved, the surface looks bright, attractive and smooth, and the scratch and abrasion resistance of the first primer layer 11 and the second primer layer 111 is improved. In the present embodiment, the thicknesses of the first primer layer 11 and the second primer layer 111 are 5 μm to 10 μm, respectively.

Printing, namely printing a first primer layer 11 on the earphone hole site 101, baking and curing, then printing a second primer layer 111, baking and curing to enable the earphone hole site 101 to have metal texture, then continuously pad-printing a first protective layer 12 and a second protective layer 121, baking, and finally curing by a UV lamp to finish the operation.

A second aspect of the present invention provides an electronic device (not shown in the drawings) including the composite middle frame casing 100 according to any one of the above embodiments.

In summary, according to the composite middle frame shell provided by the utility model, the two primer layers are printed on the earphone hole site, so that the earphone hole site has metal texture, the visual effect of the earphone hole site is improved, the spraying is replaced by the pad printing mode, the ink loss is reduced, the production cost is further reduced, and the scratch resistance and wear resistance of the earphone hole site are improved by pad printing the two protective layers on the primer layers.

The utility model is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the utility model is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims (5)

1. The composite middle frame shell is characterized by comprising a middle frame, wherein an earphone hole site is formed in the side wall of the middle frame, and a first primer layer is printed on the outer surface of the earphone hole site; a second primer layer is printed on the surface, facing away from the outer surface of the earphone hole site, of the first primer layer; the side, deviating from the first priming paint layer, of the second priming paint layer is printed with a first protective layer, and a second protective layer is printed on the first protective layer.

2. The composite center skin of claim 1, wherein the first protective layer and the second protective layer are both UV varnish.

3. The composite midframe skin of claim 1, wherein the thickness of the first primer layer and the second primer layer is 5-10 μ ι η, respectively.

4. The composite center skin of claim 1, wherein the first protective layer and the second protective layer each have a thickness of 5 μ ι η to 10 μ ι η.

5. An electronic device, characterized in that the electronic device comprises the composite middle frame outer shell of any one of claims 1-4.

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