JP2014044280A - Portable terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal device capable of being successfully disassembled.SOLUTION: A portable terminal device 1 comprises: a casing 2 having a side wall 2b provided so as to surround a bottom face; a display panel 6 covering the casing 2; a plurality of members disposed at a position facing the display panel 6, in a space formed by the casing 2 and the display panel 6; and a joining member 5 for joining the display panel 6 over the plurality of members. In the joining member 5, the joining strength of a joining surface with the display panel 6 is different from that of a joining surface with the plurality of members. In this case, the surface roughness of a joining surface with the joining member 5 in at least one of the plurality of members is preferably larger than that of a joining surface with the joining member 5 in the display panel 6, and the joining strength of the joining surface with the display panel 6 in the joining member 5 is preferably higher than that of the joining surface with the plurality of members in the joining member 5.

Description

  The present invention relates to a mobile terminal device.

  In recent years, mobile terminal devices such as mobile phones and smartphones have become widespread. Here, it is preferable that the portable terminal device has a configuration that takes into consideration the enlargement of the display panel, ease of disassembly, and the like. For example, in the portable terminal device disclosed in Patent Document 1, the periphery of the display panel is bonded to a side wall provided around the casing via a double-sided bonding tape.

JP2012-95152A

  The portable terminal device of Patent Document 1 does not consider the relationship between the bonding strength of the bonding surface with the display panel in the double-sided bonding tape and the bonding strength of the bonding surface with the side wall of the housing in the double-sided bonding tape. Therefore, the dismantability of the mobile terminal device may be bad.

  An object of the present invention is to solve the above-described problems, and is to provide a mobile terminal device with good disassembly.

  A portable terminal device according to one embodiment of the present invention includes a housing having a side wall provided so as to surround a bottom surface, a display panel covering the housing, and a space formed by the housing and the display panel. A plurality of members disposed at positions facing the display panel, and a joining member that joins the display panel across the plurality of members, and the joining member is a joint surface with the display panel. The bonding strength and the bonding strength of the bonding surfaces of the plurality of members are different.

  ADVANTAGE OF THE INVENTION According to this invention, a portable terminal device with a good demolition property can be provided.

It is a perspective view which shows the portable terminal device which concerns on embodiment of this invention. It is a disassembled perspective view which abbreviate | omits a board | substrate and a battery, and shows the portable terminal device which concerns on embodiment of this invention. It is a longitudinal cross-sectional view of the left-right direction which shows the portable terminal device which concerns on embodiment of this invention. It is an enlarged view of A part of FIG. FIG. 4 is an enlarged view of a portion B in FIG. 3. It is a bottom perspective view showing a protection member. It is a top view which shows a different joining member. It is a disassembled perspective view which abbreviate | omits a board | substrate and a battery, and shows the different portable terminal device which concerns on embodiment of this invention.

  A portable terminal device according to an embodiment of the present invention will be described. However, the present invention is not limited to the following embodiment. In addition, for clarity of explanation, the following description and drawings are simplified as appropriate.

  The mobile terminal device according to the present embodiment is suitable as, for example, a smartphone, a tablet-type mobile terminal device, a mobile phone, a game machine, an electronic book terminal, or the like.

  First, the basic configuration of the mobile terminal device according to the present embodiment will be described. As shown in FIGS. 1 and 2, the mobile terminal device 1 includes a housing 2, a frame 3, a protective member 4, a joining member 5, a display panel 6, and the like, and is formed by the housing 2 and the display panel 6. A substrate, a battery, and the like are accommodated in the sealed space.

  As shown in FIGS. 2 to 5, the housing 2 is provided around a recess 2 a that can accommodate predetermined members (a frame including a substrate, a battery, and the like, an antenna, a speaker, a camera, and the like) and the recess 2 a. The side wall 2b is provided.

  The housing 2 is preferably made of a material having high rigidity in order to achieve thinning and high strength. For example, the housing | casing 2 can be comprised using the carbon composite material (Carbon fiber reinforced plastics (CFRP: Carbon Fiber Reinforced Plastics)) containing a carbon fiber. The carbon composite material is a composite material containing 50% by volume or more of carbon and containing an inorganic binder such as silica and alumina, a fiber, and the like. Carbon composite material has both high strength and lightness. Moreover, you may comprise the housing | casing 2 using metal materials, such as aluminum, an aluminum alloy, and a magnesium alloy.

  As shown in FIG. 2, the frame 3 extends in a direction intersecting the longitudinal direction of the housing 2 and frame members 3 a and 3 b extending in the longitudinal direction of the housing 2, and connects the frame members 3 a and 3 b. Beam members 3c, 3d, and 3e are provided. The surfaces of the frame members 3 a and 3 b and the beam members 3 c and 3 e that face the display panel 6 are joint surfaces with the display panel 6.

  Since the frame 3 is a member for holding a substrate, a battery, and the like, it needs a certain degree of strength. Therefore, the frame 3 is preferably formed using a metal material. Examples of the material used for the frame 3 include magnesium alloy, aluminum, and stainless steel. In view of reducing the weight of the mobile terminal device, it is preferable to use a magnesium alloy, for example, die casting.

  The frame 3 to which the substrate, the battery, and the like are fixed can be fixed to a mounting portion provided at a corner portion of the concave portion 2a of the housing 2 by using screws or the like, for example. In the present specification, for the sake of simplicity of explanation, components such as a substrate and a battery that are not directly related to the configuration of the present invention are appropriately omitted and detailed description thereof is omitted.

  The protection member 4 protects the peripheral edge of the display panel 6. As shown in FIGS. 3 to 5, the protection member 4 according to the present embodiment is provided with a rib portion 4 a surrounding the display panel 6 and the rib portion 4 a, and the side wall 2 b of the housing 2 and the display panel 6 are arranged. The horizontal part 4b arrange | positioned between is provided. A surface of the horizontal portion 4b facing the display panel 6 is a bonding surface with the display panel 6, and is disposed substantially parallel to the bonding surface of the frame 3.

  As shown in FIGS. 2 and 6, the protection member 4 includes a plurality of hook portions 4c provided on the horizontal portion 4b. The protective member 4 can be fixed to the side wall 2 b of the housing 2 by fitting the hook portion 4 c with the protruding portion 2 c provided on the side wall 2 b of the housing 2. The arrangement of the hook portions 4c provided on the protection member 4 shown in FIGS. 2 and 6 is an example, and the number and arrangement of the hook portions provided on the protection member 4 can be arbitrarily determined.

  The protective member 4 can be formed using a softer material than the housing 2 and the display panel 6, that is, a material having low rigidity. For example, the protective member 4 can be formed using a resin material (general-purpose engineering plastic such as polycarbonate, thermoplastic elastomer, or the like).

  The joining member 5 is a member for joining the frame 3 and the protection member 4 to the display panel 6. The joining member 5 of the present embodiment is a double-sided joining tape. The joining member 5 is disposed so as to surround the display area of the display panel 6. The joining member 5 is disposed so as to straddle the joining surface of the frame 3 and the joining surface of the protection member 4. That is, one joining surface of the joining member 5 is joined to the periphery of the display panel 6. Further, the other joining surface of the joining member 5 is joined to the joining surface of the frame 3 and the protection member 4. The details of the joining member 5 will be described later.

  The display panel 6 includes, for example, a liquid crystal panel, an organic EL (Electro Luminescence) panel, and the like. The display panel 6 may include a touch panel. The display panel 6 is attached to the housing 2 through the frame 3 and the protection member 4 so as to cover the housing 2. Here, since it is necessary to protect the liquid crystal and the like from the external environment, the display panel 6 is formed using, for example, a transparent and highly rigid material (for example, tempered glass).

  Next, the joining member 5 of the present embodiment will be described in detail. Here, since the display panel 6 is formed using, for example, tempered glass or the like, the surface roughness of the bonding surface with the bonding member 5 in the display panel 6 is smaller than other members to be bonded. That is, the bonding surface of the display panel 6 with the bonding member 5 is smooth compared to other members to be bonded.

  On the other hand, since the frame 3 is formed by die casting, for example, the surface roughness of the joining surface of the frame 3 with the joining member 5 is larger than that of other members to be joined. That is, the joint surface of the frame 3 with the joining member 5 is rougher than other members to be joined.

  That is, the surface roughness of the bonding surface with the bonding member 5 in the frame 3 is larger than the surface roughness of the bonding surface with the bonding member 5 in the display panel 6. Therefore, the bonding surface of the frame 3 with the bonding member 5 is less likely to peel off than the bonding surface of the display panel 6 with the bonding member 5, and adhesive residue is likely to occur. The operation of removing the glue remaining on the member is complicated and reduces the dismantling of the mobile terminal device.

  The joining member 5 of the present embodiment is configured such that the joining strength of the joining surface with the display panel 6 is higher than the joining strength between the joining surface of the frame 3 and the protection member 4. Accordingly, when the display panel 6 is to be separated from the housing 2 in order to disassemble the mobile terminal device 1, the bonding member 5 has a high bonding strength on the display panel 6 side, and therefore the bonding surface on the side having a low bonding strength is present. It peels off from the frame 3 and the protection member 4, and the adhesive residue to the frame 3 and the protection member 4 can be suppressed. Since the display panel 6 has a small surface roughness, the joining member 5 can be easily peeled off. Therefore, the mobile terminal device 1 according to the present embodiment has high dismantling properties, and as a result, the component reuse rate can be improved.

  Next, a procedure for dismantling the mobile terminal device 1 of the present embodiment will be described. First, the rib portion 4a of the protection member 4 is pulled to pull out the horizontal portion 4b from between the display panel 6 and the side wall 2b of the housing 2, and the bonding member 5 is partially exposed from the side. At this time, since the bonding strength on the protective member 4 side in the bonding member 5 is lower than the bonding strength on the display panel 6 side, the horizontal portion 4 b is easily pulled out from between the display panel 6 and the side wall 2 b of the housing 2. Can do.

  Next, a plate-shaped member such as a scraper is inserted into a portion between the display panel 6 where the bonding member 5 is exposed and the side wall 2 b of the housing 2, and the plate-shaped member is inserted between the bonding member 5 and the frame 3. insert. Also at this time, since the bonding strength on the frame 3 side in the bonding member 5 is lower than the bonding strength on the display panel 6 side, the plate-like member can be easily inserted between the bonding member 5 and the frame 3.

  Next, in a state where the plate-like member is inserted between the joining member 5 and the frame 3, the plate-like member is moved along the periphery of the mobile terminal device 1, and the joining member 5 is peeled off from the frame 3 and the protection member 4. . At this time, since the bonding strength on the frame 3 side in the bonding member 5 is lower than the bonding strength on the display panel 6 side, adhesive residue on the frame 3 can be suppressed.

  When the joining member 5 is peeled off from the frame 3 and the protection member 4 as described above, the display panel 6 can be easily separated from the housing 2 without being damaged. Thereafter, when the frame 3, the protection member 4, and the like are removed from the housing 2, the mobile terminal device 1 can be disassembled.

  Here, as shown in FIG. 7, between the display panel 6 and the side wall 2b of the housing 2, the joining member 5 includes a notch portion 5a that opens outward so that the plate-like member can be easily inserted. It is preferable. Thereby, a plate-shaped member can be easily inserted between the display panel 6 and the side wall 2b of the housing | casing 2, and the disassembly property of the portable terminal device 1 can be improved.

  Further, as shown in FIG. 8, the protection member 4 is formed so that the horizontal portion 4 b can be easily pulled out from between the display panel 6 and the side wall 2 b of the housing 2 by pulling the rib portion 4 a of the protection member 4. It is preferable that the hook part 4c is arrange | positioned in the part except the part which assumes pulling out the horizontal part 4b. In the present embodiment, the hook portion 4 c is disposed in a portion excluding a portion corresponding to the notch portion 5 a of the joining member 5. That is, when viewed from the side, the hook portion 4c of the protection member 4 is not disposed at the portion where the cutout portion 5a of the joining member 5 is disposed. Accordingly, the horizontal portion 4b of the protection member 4 can be easily pulled out from between the display panel 6 and the side wall 2b of the housing 2, and the plate-shaped member is disposed between the display panel 6 and the side wall 2b of the housing 2. Can be easily inserted, and the disassembly of the mobile terminal device 1 can be further improved.

  The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the joining member 5 is disposed so as to straddle the frame 3 and the protection member 4, but this is not restrictive. For example, the horizontal portion 4 b of the protection member 4 may be omitted, and the joining member 5 may be disposed so as to straddle the frame 3 and the side wall 2 b of the housing 2. In short, it is only necessary that the joining member 5 is disposed so as to straddle a plurality of members (including the housing 2) so that the display panel 6 can be joined to the housing 2 via the joining member 5.

DESCRIPTION OF SYMBOLS 1 Portable terminal device 2 Case, 2a Recessed part, 2b Side wall, 2c Protruding part 3 Frame, 3a, 3b Frame member, 3c, 3d, 3e Beam member 4 Protective member, 4a Rib part, 4b Horizontal part, 4c Hook part 5 Joining Member, 5a Notch 6 Display panel

Claims (5)

A housing having a side wall provided so as to surround the bottom surface;
A display panel covering the housing;
A plurality of members disposed in positions facing the display panel in a space formed by the housing and the display panel;
A joining member that joins the display panel across the plurality of members, and
The said joining member is a portable terminal device from which the joint strength of the joint surface with the said display panel differs from the joint strength of the joint surface with these members. The surface roughness of the bonding surface with the bonding member in at least one member of the plurality of members is larger than the surface roughness of the bonding surface with the bonding member in the display panel,
The portable terminal device according to claim 1, wherein a bonding strength of a bonding surface of the bonding member with the display panel is higher than a bonding strength of bonding surfaces of the bonding member with the plurality of members. The plurality of members have a frame and a protective member,
The frame is a metal frame fixed to the housing, and has a joint surface to which the display panel is joined,
The protective member is fixed to a side wall of the casing, and is provided with a rib portion surrounding a peripheral edge of the display panel and the rib portion, and is disposed between the display panel and the side wall of the casing. A horizontal portion, and the horizontal portion is disposed substantially parallel to the joint surface of the frame, and has a joint surface to which the display panel is joined,
The portable terminal device according to claim 1, wherein the joining member is disposed so as to straddle a joining surface of the frame and a joining surface of the protection member. The joining member is disposed around the display panel,
The mobile terminal device according to claim 1, wherein the joining member includes a notch having an opening on an outer side. The protective member is provided in a plurality in the horizontal part, and has a hook part that fits into a fitting part provided in a side wall of the housing,
The portable terminal device according to claim 4, wherein the hook portion is arranged except for a portion where the notch portion of the joining member is arranged when viewed from the side.

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