JP2011055107A - Case of mobile terminal device and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the intensity and the rigidity of a case of a mobile terminal device. <P>SOLUTION: A manufacturing method of a case 84 of a mobile terminal device has an insert shaping process of loading a rim of a resin plate 11 having a plate rim into a mold, injecting resin 12 into the mold, and fixing the resin 12 to the rim by melting. Also, the case 84 of the mobile terminal device is used in a portable terminal device such as a mobile phone, a PHS, and a PDA, and has the resin plate 11 having the plate rim without folding, and the resin 12 fixed to the rim. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a casing of a mobile terminal device, a mobile terminal device, and a method for manufacturing the casing of a mobile terminal device.

  An insert-molded product obtained by insert-molding a sheet metal is used for a casing component of a mobile terminal device.

  On the other hand, an insert molded product using a laminate member whose surface is covered with a resin layer has been proposed (see, for example, Patent Documents 1 and 2).

  The insert-molded product of Patent Document 1 is obtained by insert-molding a laminated sheet metal in which a thin metal plate forms part of the surface on a resin surface. This prevents peeling of the thin metal plate that occurs when the thin metal plate is disposed on the plastic surface.

  The insert-molded article of Patent Document 2 is obtained by insert-molding a decorative material in which wood and a thermoplastic resin are stacked on a resin. This facilitates the manufacture of a composite molded product in which the decorative material and the synthetic resin are integrated.

JP 2003-062857 A Japanese Patent Laid-Open No. 04-163030

  Due to continuous use of the mobile terminal device, the housing of the mobile terminal device is subjected to loads such as torsion and warping. Because the load gradually deforms the details of the casing of the mobile terminal device to generate a gap, the casing of the mobile terminal device is required to have strength and rigidity.

  In the insert-molded product described in Patent Document 1 described above, the case of receiving a load such as twisting or warping is not considered, and since the laminate sheet metal is insert-molded on the resin surface, the strength of the casing of the portable terminal device There is a problem that the rigidity cannot be improved.

  In the insert molded article described in Patent Document 2 described above, since a decorative material is used, there is a problem that the strength and rigidity of the casing of the mobile terminal device cannot be improved.

  The objective of this invention is providing the housing | casing of the portable terminal device which solves the subject mentioned above, and its manufacturing method.

  In the method of manufacturing a casing component for a mobile terminal device according to the present invention, the edge portion of a resin plate having a planar edge is loaded into a mold, and the resin is injected into the mold and melted, and then the edge It has an insert molding process for fixing the resin to the part.

  The housing component of the portable terminal device of the present invention includes a resin plate having a planar edge and a resin fixed to the edge.

  The portable terminal device of this invention is equipped with the housing component of the portable terminal device of this invention.

  ADVANTAGE OF THE INVENTION According to this invention, the intensity | strength and rigidity of the housing | casing of a portable terminal device can be improved.

It is an example of the portable terminal device which concerns on Embodiment 1, and shows the state which opened the portable terminal device. It is an example of the portable terminal device which concerns on Embodiment 1, and shows the state which closed the portable terminal device. It is a general-view figure which shows an example of the housing components of a portable terminal device. It is an example of an A-A 'section of a case part of a portable terminal device, (a) shows the whole and (b) shows an enlarged view of an edge part. It is a flowchart which shows an example of the manufacturing method of the housing components of the portable terminal device which concerns on this embodiment. It is an example of the A-A 'cross section of the housing component of the portable terminal device when the resin plate is not insert-molded, (a) shows the whole, and (b) shows an enlarged view of the edge portion.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. In the present specification and drawings, the same reference numerals denote the same components.

(Embodiment 1)
FIG. 1 is an example of a mobile terminal device according to the first embodiment, and shows a state where the mobile terminal device is opened. FIG. 2 is an example of the mobile terminal device according to the first embodiment, and shows a state where the mobile terminal device is closed. The portable terminal device is a portable terminal device, such as a mobile phone, a PHS (Personal Handyphone System), or a PDA (Personal Digital Assistant).

  The mobile terminal device 91 includes a housing part 81, a housing part 82, a housing part 83, a housing part 84, and a housing part 85. In the present embodiment, the case component 84 will be described as an example.

  FIG. 3 is an example of a housing component of the mobile terminal device according to the first embodiment. FIG. 4 is an example of an A-A ′ cross section of the casing component of the mobile terminal device, where (a) shows the whole and (b) shows an enlarged view of the edge portion. The casing component 84 of the mobile terminal device includes a resin plate 11 and a resin 12. The resin plate 11 has a planar edge without bending. The resin 12 is fixed to the edge of the resin plate 11.

  FIG. 5 is a flowchart showing an example of a method for manufacturing a casing component of the mobile terminal device according to the present embodiment. The manufacturing method of the housing component of the mobile terminal device according to the present embodiment includes an insert molding step S111. In the insert molding step S111, the edge portion of the resin plate 11 having a flat edge without bending is loaded into the mold, the resin is poured into the mold and melted, and then the resin is fixed to the edge portion. Thereby, the housing | casing component 84 of the portable terminal device shown in FIG. 3 can be manufactured.

  In order to insert-mold the resin at the edge of the resin plate 11, the interface between the resin plate 11 and the resin 12 is mutually melted by heat during molding, and the interface between the resin plate 11 and the resin 12 is strongly bonded. For this reason, since the adhesive force is strongly obtained between the resin plate 11 and the resin 12, the strength and rigidity of the casing 84 of the mobile terminal device can be improved.

  In addition, since a strong adhesion can be obtained between the resin plate 11 and the resin 12, it is not necessary to bend the edge of the resin plate 11 to provide an anchor. For this reason, the width W1 and the thickness H1 of the housing component 84 shown in FIG. 4 can be reduced, and the thickness H3 of the mobile terminal device shown in FIG. 2 can be reduced.

  Furthermore, since the interface between the resin plate 11 and the resin 12 is closely adhered, there is no gap between the resin 12 and the resin plate 11 where water enters. For this reason, the waterproof effect of a portable terminal device is acquired.

(Embodiment 2)
In the case of a foldable structure, the casing component of the mobile terminal device may have a configuration of the casing component as shown in FIGS. In the recent market, the mobile terminal device 91 is required to be thin, but the strength and reliability of the mobile terminal device are also required to be improved.

  An example of forming a casing component is shown. When insert molding is performed on a sheet metal instead of a resin sheet, reliable adhesion cannot be obtained at the interface between the molding resin and the sheet metal, and peeling may occur at the interface.

  FIGS. 6A and 6B are examples of an A-A ′ cross section of the casing component of the portable terminal device when the resin plate is not insert-molded. FIG. 6A shows the whole, and FIG. 6B shows an enlarged view of the edge portion. When the resin plate is not insert-molded, a bent portion 113 is provided at the edge of the metal plate 111 to ensure the strength, thereby providing an anchor effect in the pulling direction. Therefore, the width W2 and the thickness H2 of the resin 112 of the bent portion 113 are thick. In addition, since the anchor is local, there is a limit to improving the strength and rigidity.

  Further, the joining force between the sheet metal 111 and the resin 112 is obtained by anchor portions set at several points, and the joining surfaces are not actually joined. For this reason, when continuous housing deformation such as twisting or warping overlaps the mobile terminal device, a gap is gradually formed between the sheet metal 111 and the resin 112, and the strength and rigidity of the mobile terminal device are reduced.

  Therefore, in the present embodiment, a laminated sheet metal or a resin part (including only the surface) is used as a substitute for the sheet metal in a thin and high strength component obtained by insert molding of the sheet metal. For example, as shown in FIG. 4, the resin plate 11 is used to form a strong joint surface between the resin plate 11 and the resin 12, thereby improving the adhesion.

  The material and base material ratio of the resin plate 11 are not limited. By selecting the base material of the resin plate 11 and the mixing ratio thereof, the strength and rigidity of the resin plate 11 can be improved.

  The resin plate 11 may be a resin plate in which a metal plate having a flat edge without bending is bonded to one side. Since the metal plate is bonded to the resin plate 11, the strength and rigidity of the housing component 84 can be improved. If at least one surface of the resin plate 11 is resin, a strong adhesion between the resin plate 11 and the resin 12 can be obtained.

  The resin plate 11 may be a resin plate in which a resin is laminated on both surfaces of a metal plate having a flat edge without bending. Since the metal plate is bonded to the resin plate 11, the strength and rigidity of the housing component 84 can be improved. Since both surfaces of the resin plate 11 are resin, a strong adhesive force can be obtained between the resin plate 11 and the resin 12.

  The resin plate 11 may be made of a fiber reinforced resin in which fibers are mixed in a resin. Thereby, the strength and rigidity of the resin plate 11 can be improved. Here, the fiber is, for example, carbon. Since the resin plate 11 is made of carbon fiber reinforced resin, the resin plate 11 is lightweight and has high strength.

  The casing component 84 of the portable terminal device uses the resin plate 11 on the insert-molded side to provide a strong bonding surface between the materials by providing a strong bonding surface by mutual melting with heat during molding. Can be obtained. As a result, the strength and rigidity of the housing component 84 are improved, and the user can be provided with high strength and reliability as the mobile terminal device 91 shown in FIGS.

  Since strong and intimate joining of the entire joining surface of the resin plate 11 and the resin 12 is obtained, even when continuous housing deformation such as torsion and warping overlaps, the joining surface of the resin plate 11 and the resin 12 Therefore, it is difficult to form a gap, and it is possible to prevent a decrease in strength and rigidity of the mobile terminal device. Therefore, the high strength and rigidity of the portable terminal device 91 shown in FIGS. 1 and 2 can be ensured for a long period of time.

  Since strong and intimate joining of the entire joining surface of the resin plate 11 and the resin 12 shown in FIG. 4 is obtained, it is not necessary to provide an anchor at the edge of the resin plate 11, and the width W1 and the thickness H1 of the resin 12 are reduced. Can do. Therefore, the thickness H3 of the mobile terminal device 91 shown in FIG. 2 can be reduced, and the expansion of the component mounting area and the size reduction of the mobile terminal device 91 itself can be realized.

  Since a strong adhesive surface by mutual melting is formed between the resin plate 11 and the resin 12 shown in FIG. 4, it is possible to prevent water from entering from the joint surface between the resin plate 11 and the resin 12. As a result, the waterproof effect of the portable terminal device 91 can be obtained.

  Note that the casing component according to the present embodiment can be applied to any part of the mobile terminal device regardless of the shape of the mobile terminal device shown in FIGS. 1 and 2. For example, the present invention can be applied to covers other than the casing of the mobile terminal device. As a result, a cover having strength and rigidity can be realized, and the sealing performance is also improved.

  Moreover, the housing component according to the present embodiment can be applied to devices other than the mobile terminal device. By using the casing component according to the present embodiment for a device other than the mobile terminal device, the device can be reduced in thickness, size, and weight, and the strength and rigidity of the device can be ensured. Moreover, since the housing | casing components which concern on this embodiment have sealing performance, the waterproof effect of the said apparatus is also acquired.

  The present invention can be applied to the information communication industry.

11: Resin plate 12: Resin 81, 82, 83, 84, 85: Case component 91: Mobile terminal device 111: Sheet metal 112: Resin 113: Bending portion

Claims (9)

  A portable terminal device having an insert molding process in which the edge portion of a resin plate having a planar edge is loaded in a mold, and the resin is injected and melted into the mold, and then the resin is fixed to the edge portion. Manufacturing method of housing parts.   The resin plate is a resin plate in which a metal plate having a planar edge is bonded to one side or a resin plate in which a resin is laminated on both sides of a metal plate having a planar edge. The method for manufacturing a casing component of a mobile terminal device according to claim 1,   The method of manufacturing a casing component for a portable terminal device according to claim 1 or 2, wherein the resin plate is made of a fiber reinforced resin in which fibers are mixed in a resin.   The method for manufacturing a casing component for a portable terminal device according to claim 3, wherein the fiber is carbon. A resin plate having a planar edge;
A resin fixed to the edge;
A casing component for a portable terminal device.   The resin plate is a resin plate in which a metal plate having a planar edge is bonded to one side or a resin plate in which a resin is laminated on both sides of a metal plate having a planar edge. The casing component of the portable terminal device according to claim 5, wherein the casing component is a portable terminal device casing component.   The casing part of the portable terminal device according to claim 5, wherein the resin plate is made of a fiber reinforced resin in which fibers are mixed in a resin.   The casing component of the portable terminal device according to claim 7, wherein the fiber is carbon.   A portable terminal device comprising the casing component according to claim 5.

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