TWI398340B - A handheld mobile device housing and its manufactueing method thereof - Google Patents

Description

Handheld mobile device case and molding method thereof

The present invention relates to an outer casing and a method of forming the same, and in particular to a hand held mobile device casing and a method of forming the same.

The housing of the existing handheld mobile device can realize the integration of the housing and the transparent window by the two-color injection technology, please refer to FIG. 1 to FIG. 1 is a schematic structural view of a conventional hand-held mobile device case, FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1, and FIG. 3 is an enlarged schematic view of a B-part structure of FIG. As shown in Fig. 1, Fig. 2 and Fig. 3, the transparent plastic window 11 and the plastic casing 12 are integrated, so that although the window boundary can be perfectly combined with the surrounding structure, the visual effect without gap and gap is realized. However, the window material can only be made of plastic material, which has the problems of low hardness and transparency, easy wear and insufficient strength.

In addition, there is a hand-held mobile device housing directly bonding the glass window to the casing, as shown in FIG. 4, which is a structural schematic diagram of another conventional handheld mobile device casing, and FIG. 5 is the fourth. Fig. 4 is a cross-sectional view taken along the line CC, and Fig. 6 is an enlarged schematic view showing the structure of the D portion of Fig. 5. As shown in FIG. 4, FIG. 5 and FIG. 6, the glass window 21 is directly combined with the casing 23 by the double-sided tape 22, and although the window is more clear and durable, there is a gap and a gap after the window is assembled, and Not aesthetic.

In view of the above-mentioned problems of the prior art, the present invention provides a handheld mobile device casing and a molding method thereof. In order to solve the problem that the conventional handheld mobile device case is not durable and aesthetically pleasing.

According to the purpose of the present invention, a method for forming a hand-held mobile device casing is proposed, the steps comprising: separately processing a glass member and a support member, the glass member is a window of the hand-held mobile device case, and the support member is for supporting the glass member; The glass member is placed on the support member in a staggered manner, even if one end of the support member is exposed to the glass member; and the support member on which the glass member is placed is injection molded to form a hand-held mobile device casing covering the glass member and the support member, that is, Made into a handheld mobile device case.

Wherein, the glass member is processed into a structure in which the side wall is a straight wall, that is, the side wall of the glass member is perpendicular to the upper surface and the lower surface of the glass member.

Wherein, the glass member is processed into a structure in which the side wall is a skirt, and the side wall having the skirt structure is composed of a first segment plane, a second segment plane and a curved surface, and one end of the second segment plane is connected to the first segment plane, and One end is tangent to the arc surface; one end of the first section plane is connected to the plane of the second section, and the other end is connected to the lower surface of the glass piece; one end of the arc surface is tangent to the plane of the second section, and the other end is connected to the upper surface of the glass piece .

Wherein, the inclination of the first section plane is 70°~90°, the length of the first section plane is 0.3 mm~0.8 mm along the oblique direction thereof; the inclination of the second section plane is 10°~25°, the second section The length of the plane along its oblique direction is 0.6 mm to 1 mm; the radius of the arc surface is 0.2 mm to 0.5 mm.

Wherein, when the side wall of the glass member is a straight wall structure, an adhesive is first applied to the glass member or the support member, and then the glass member is placed on the support member to adhere the glass member to the support member.

Wherein, when the side wall of the glass member is a skirt structure, the glass member is directly placed on the support member.

According to the object of the present invention, a hand-held mobile device casing is provided, which comprises: a support member; a casing covering the support member and fixedly connected with the support member, and the casing is provided with a fixing member The opening portion; and a glass window are passed through the opening portion of the housing and disposed on the support member. Wherein the boundary between the glass window and the casing is tightly combined, and the shape of the glass window and The shape of the opening portion is adapted.

Wherein, the handheld mobile device case further comprises an adhesive layer disposed between the glass window and the support member.

Wherein, when the side wall of the glass window is a straight wall structure, the support member is a plastic member or a sheet metal member; when the side wall of the glass window is a skirt structure, the support member is a plastic injection molded part, a plastic part or a sheet metal part.

Wherein, when the support member is a plastic injection molded part, the material is polycarbonate and acrylonitrile-butadiene-styrene copolymer and mixture or a mixture of polycarbonate and glass fiber, and the thickness is 0.4 mm to 1.2 mm. When the support member is a plastic member, the material is polycarbonate and has a thickness of 0.4 mm to 1.0 mm; when the support member is a sheet metal member, the material is stainless steel and has a thickness of 0.3 mm to 1.0 mm.

As described above, the method for forming a hand-held mobile device casing according to the present invention produces a hand-held mobile device casing, which has the advantages of simple molding method, easy operation, and low operation cost, and since the glass body and the support body and the casing are jointly injection molded, The subsequent assembly process is reduced, and the window boundary made of the vitreous body can be perfectly combined with the shell to realize the visual effect without gap and gap. In addition, the window material is glass, which has the advantages of high hardness, low wear resistance, high transparency, and excellent mechanical properties.

11‧‧‧Transparent plastic window

12‧‧‧Plastic shell

21, 201, 301, 401‧‧ ‧ glass windows

22‧‧‧ Double-sided tape

23, 203, 304, 404‧‧‧ shell

S101~S103‧‧‧Steps

A‧‧‧first plane

B‧‧‧second plane

c‧‧‧Arc face

d‧‧‧Arc radius

E‧‧‧ tilt angle

202, 303, 403‧‧‧ support

302, 402‧‧‧ adhesive layer

1 is a schematic structural view of a conventional hand-held mobile device case; FIG. 2 is a cross-sectional view taken along line AA of FIG. 1; FIG. 3 is an enlarged schematic view of a structure of B of FIG. 2; Another schematic diagram of the structure of a hand-held mobile device case; FIG. 5 is a cross-sectional view of the fourth figure taken along the CC direction; 6 is an enlarged schematic view of the structure of the D portion of FIG. 5; FIG. 7 is a flow chart of the steps of the molding method of the handheld mobile device case of the present invention; and FIG. 8 is a first embodiment of the glass member of the present invention. FIG. 9 is a schematic structural view of Embodiment 2 of the glass member of the present invention; FIG. 10 is a schematic structural view of Embodiment 1 of the hand-held mobile device case of the present invention; FIG. 11 is a schematic view of the present invention A schematic structural view of Embodiment 2 of a handheld mobile device case; and FIG. 12 is a schematic structural view of Embodiment 3 of the handheld mobile device case of the present invention.

Hereinafter, a molding of a hand-held mobile device case and a molding method thereof according to a preferred embodiment of the present invention will be described with reference to the related drawings. For the sake of understanding, the same components of the following embodiments are denoted by the same reference numerals.

Please refer to FIG. 7, which is a flow chart of the steps of the method for molding the handheld mobile device case of the present invention. As shown in the figure, the method for molding a hand-held mobile device case of the present invention comprises the steps of: step S101, respectively processing a glass member and a support member, wherein the glass member serves as a window of a hand-held mobile device case, and the support member is used for Support the glass piece. In step S102, the glass member is placed on the support member in a staggered manner, even if one end of the support member is exposed to the glass member. And in step S103, the support member on which the glass member is placed is injection-molded to form a hand-held mobile device casing covering the glass member and the support member, that is, the hand-held mobile device casing is formed.

In step S101, a glass member and a support member are respectively processed, wherein the glass member is a window as a casing of the hand-held mobile device, and the support member is for supporting the glass member. Please refer to FIG. 8 , which is a schematic structural view of Embodiment 1 of the glass member of the present invention. This embodiment is a structure in which the side wall of the glass member is processed into a straight wall in step S101, as shown in Fig. 8, that is, the side wall of the glass member is perpendicular to the upper and lower surfaces of the glass member.

Please refer to FIG. 9 , which is a schematic structural view of Embodiment 2 of the glass member of the present invention. In this In the embodiment, the side wall of the glass member is processed into a structure of a skirt. As shown in FIG. 9, the side wall having the skirt structure is composed of a first segment plane a, a second segment plane b, and a curved surface c, wherein One end of the second plane b is connected to the first plane a, and the other end is tangent to the curved plane c; one end of the first plane a is connected to the second plane b, and the other end is connected to the lower surface of the glass member; One end of the face c is tangent to the second segment plane b, and the other end is connected to the upper surface of the glass member. The inclination of the first plane a is 70°~90°, and the length of the first plane a is 0.4 mm to 0.8 mm along the oblique direction thereof; and the inclination angle e of the second plane b is 15° to 20°. And the length of the second plane b in the oblique direction thereof is 0.6 mm to 1 mm; the radius d of the curved surface c is 0.2 mm to 0.5 mm. In this embodiment, the inclination angle of the first plane a is 90°, the inclination angle of the second plane b is 18°, and the radius d of the curved surface c is 0.3 mm.

In addition, the processing of the glass member comprises sequentially cutting, patterning, grinding, polishing and chemically hardening the glass to obtain the glass member as shown in Figs. 8 and 9.

After the step S101 is completed, in step S102, the glass member is placed on the support member in a staggered manner, so that one end of the support member is exposed to the glass member.

Wherein, when the side wall of the glass member is a straight wall structure, in step S102, the adhesive is applied to the glass member or the support member, and then the glass member is placed on the support member to adhere the glass member to the support member. The binder can be 3M 2665 thermoset or other similar products. Alternatively, a double-sided tape may be disposed between the glass member and the support member to adhere the glass member to the support member. By fixing the glass member to the support member by adhesive or double-sided tape, the thickness of the glass member can be made relatively small, so that the side wall of the glass member can only be processed into a straight wall structure, and if no adhesive or double-sided is used When the glue fixes the glass member to the support member, when the hand-held mobile device casing encounters an external force impact, the glass member is likely to be detached from the surface of the support member, that is, it is detached from the handle of the hand-held mobile device to cause damage.

When the side wall of the glass member is a skirt structure, in step S102, the glass member can be directly placed on the support member, and the glass member at this time is a structure that can be processed into a skirt. Can be processed into a skirt The glazing unit of the structure has a special protruding structure, which is a protruding structure formed by a first section plane and a second section plane having different inclinations. The structure allows the glazing unit to be firmly embedded in the casing of the handheld mobile device. When the hand-held mobile device casing encounters an external force impact, the glass member is not easily detached from the surface of the support member, that is, it is not easily detached from the hand-held mobile device casing and causes damage.

Wherein, the shape of the support member is not limited, and the function thereof is for supporting the glass member, so it is only necessary to ensure that part of the support member can protrude outside the glass member during installation, so as to enable the support during the subsequent injection molding process. Both the piece and the glazing are bonded to the injection molded part, ie the hand held mobile device housing.

Finally, in step S103, the support member on which the glass member is placed is injection molded to form a hand-held mobile device casing that is coated on the glass member and the support member, that is, a hand-held mobile device casing.

The parameters and parameter sizes required for the injection molding process in step S103 are shown in Table 1.

Please refer to FIG. 10, which is a schematic structural view of Embodiment 1 of the handheld mobile device case of the present invention. As shown in FIG. 10, in the present embodiment, the cross-sectional shape of the support member 202 is inverted L-shaped, and the first-stage plane a of the glass window 201 has a size of 0.7 mm to 1.5 mm, and the housing 203 and the glass window 201 are in contact with each other. The second plane b has a dimension of 0.3 mm to 3 mm, and the curved surface c of the contact portion of the casing 203 and the glass window 201 has a size of 0.3 mm to 1.2 mm, and the radius d of the arc surface is larger than or equal to 3.2 mm.

Figure 11 is a schematic view showing the structure of Embodiment 2 of the hand-held mobile device case of the present invention. As shown in FIG. 11, in the present embodiment, the cross-sectional shape of the support member 303 is T-shaped, and the adhesive layer 302 is disposed between the glass window 301 and the support member 303, and the first-stage plane a of the glass window 301 has a size of The dimension of the second section plane b of the support member 303 is from 1 mm to 3 mm, and the dimension of the arcuate surface c of the casing 304 and the portion of the glass window 301 is greater than or equal to 5 mm.

Figure 12 is a schematic view showing the structure of Embodiment 3 of the hand-held mobile device case of the present invention. As shown in Fig. 12, in the embodiment, the support member 403 is a flat plate, and the adhesive layer 402 is disposed between the glass window 401 and the support member 403. The first plane a of the glass window 401 has a size of 0.3 mm to 0.7. In millimeters, the second section plane b dimension of the support member 403 is greater than or equal to 0.3 mm, the curved surface c dimension of the support member 403 is 1.0 mm to 3.0 mm, and the arcuate radius d dimension of the housing 404 and the partial glass window 401 is greater than or equal to 3.2 mm.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

S101~S103‧‧‧Steps

Claims (3)

A method for molding a hand-held mobile device case, the method comprising: separately processing a glass member and a support member, the glass member serving as a window of a hand-held mobile device case, the support member is for supporting the glass member; Disposed on the support member even if one end of the support member is exposed to the glass member; and the support member on which the glass member is placed is injection molded to form a cover member of the glass member and the support member Hand-held mobile device housing, that is, the hand-held mobile device casing; wherein the side wall of the glass member is processed into a skirt structure, the skirt structure is composed of a first segment plane, a second segment plane and an arc a surface composition, one end of the second segment plane is connected to the first segment plane, and the other end is tangent to the arc surface; one end of the first segment plane is connected to the second segment plane, and the other end and the lower surface of the glass member Connected; one end of the curved surface is tangent to the plane of the second section, and the other end is connected to the upper surface of the glass piece. The method for molding a hand-held mobile device case according to claim 1, wherein the first segment plane has an inclination angle of 70° to 90°, and the length of the first segment plane along the oblique direction is 0.3 mm to 0.8. The second section has an inclination angle of 10° to 25°, and the length of the second section plane is 0.6 mm to 1 mm along the inclination direction thereof; the radius of the arc surface is 0.2 mm to 0.5 mm. The method of forming a hand-held mobile device case according to claim 1, wherein the side wall of the glass member is the skirt structure, and the glass member is directly placed on the support member.