JP2014057267A - Portable terminal - Google Patents

Abstract

In a portable terminal that supplies power from a circuit board to an antenna through a through hole, a portable terminal that can prevent entry of foreign matters such as moisture and dust from the outside is provided.
A cellular phone 1 is provided in a back cabinet 6 and formed on a circuit board 5 having a power feeding terminal 10, an inner surface 21 a of a cover 21, an antenna 11 having an antenna contact 12, and a back cabinet 6. Provided on the surface of the second through-hole 16 adjacent to the power-feeding terminal 10 on the surface of the second through-hole 16 having the first through-hole 15 for housing the power-feeding terminal 10 and the second through-hole 16 for housing the antenna contact 12. The waterproof adhesive member 18 and the conductive member 20 attached to the surface of the second through hole 16 so as to close the first through hole 15 through the adhesive member 18 and in contact with the power supply terminal 10 and the antenna contact 12. With. In the through hole 17, the power supply terminal 10 and the antenna contact 12 are electrically connected via the conductive member 20.
[Selection] Figure 2

Description

  The present invention relates to a portable terminal having an antenna.

  2. Description of the Related Art Conventionally, in a mobile terminal having an antenna typified by a mobile phone, the antenna and the circuit board are connected through a through hole formed in the cabinet, and power is supplied from the circuit board to the antenna.

  For example, a mobile phone has been proposed in which a circuit board housed inside a cabinet and an antenna arranged outside the cabinet are coupled through a through-hole provided in the cabinet to feed power from the circuit board to the antenna ( For example, see Patent Document 1).

  In recent years, from the viewpoint of improving the degree of freedom of antenna pattern design, a structure in which an antenna pattern is directly formed on a cabinet or cover itself has been proposed instead of providing the antenna as an independent component.

  More specifically, as shown in FIG. 7, a front side cabinet 52 having a display recess for fitting the display panel 51 and a circuit board 53 having a power supply terminal (power supply contact) 56 are accommodated. In a mobile phone 50 including a back side cabinet 54 attached to the circuit board 53 and a cover 55 covering the back side cabinet 54 that accommodates the circuit board 53, an antenna 57 having an antenna contact 58 is formed on the inner surface of the cover 55. A structure has been proposed in which power is supplied from the circuit board 53 to the antenna 57 by bringing the power supply terminal 56 and the antenna contact 58 into contact with each other through a through hole 59 formed in the cabinet 54. With such a configuration, it becomes possible to secure a distance between the antenna 57 and components (circuit board 53, internal circuit components, batteries, etc.) that affect the antenna 57, so that stable antenna characteristics can be obtained. It becomes possible to obtain.

JP 2011-55239 A

  However, in the mobile phone 50 shown in FIG. 7, a through-hole 59 for contacting the power supply terminal 56 and the antenna contact 58 is formed in the back side cabinet 54, and therefore, the external via the through-hole 59. Thus, there has been a problem that foreign matter such as moisture and dust enters the mobile phone 50 from the inside, causing a failure such as a short circuit.

  Therefore, the present invention has been made in view of the above-described problems, and prevents foreign substances such as moisture and dust from entering from the outside in a portable terminal that feeds power from a circuit board to an antenna through a through hole. An object of the present invention is to provide a portable terminal that can be used.

  In order to achieve the above object, a portable terminal of the present invention includes a front cabinet, a back cabinet attached to the front cabinet, a circuit board provided in the back cabinet, having a power supply terminal, a cover covering the back cabinet, A through-hole formed on the surface of the cover and having an antenna contact; a through-hole formed in the back cabinet and having a first through hole for accommodating a power supply terminal and a second through hole for accommodating an antenna contact; and a second through hole And a waterproof adhesive member provided adjacent to the power supply terminal, and the adhesive member is attached to the surface of the second through hole so as to close the first through hole. A conductive member in contact with each other, and the feed terminal and the antenna contact are electrically connected to each other through the conductive member in the through hole.

  According to the same configuration, since the conductive member is attached to the surface of the second through hole so as to close the first through hole via the waterproof adhesive member, the waterproof adhesive member and the conductive member It is possible to prevent foreign matters such as moisture and dust from entering the inside of the mobile terminal from the outside through the through hole. Therefore, it is possible to prevent the occurrence of a failure such as a short circuit due to a foreign substance such as moisture or dust entering from the outside in a portable terminal that feeds power from the circuit board to the antenna through the through hole.

  In the portable terminal according to the present invention, the cover has an antenna contact, a protrusion accommodated in the second through hole, and a waterproof packing that is provided adjacent to the protrusion and closes the second through hole. You may do it.

  According to this configuration, since the waterproof packing is formed so as to close the second through hole, it is possible to further prevent foreign matters such as moisture and dust from entering the inside of the mobile terminal from the outside through the through hole. Can do. Therefore, it is possible to further prevent the occurrence of a failure such as a short circuit due to a foreign substance such as moisture or dust entering from the outside in the portable terminal that supplies power from the circuit board to the antenna through the through hole.

  In the portable terminal of the present invention, the conductive member may be an elastic member.

  According to this configuration, the contact between the antenna contact and the conductive member can be ensured by the elastic force of the conductive member.

  In the portable terminal of the present invention, the conductive member may be a leaf spring-shaped metal member.

  In the portable terminal of the present invention, the conductive member may be a rubber member having conductivity.

  In the portable terminal of the present invention, another waterproof packing may be provided between the front cabinet and the back cabinet.

  According to this configuration, it is possible to prevent foreign matters such as moisture and dust from entering the inside of the portable terminal from outside through the space between the front cabinet and the back cabinet. Therefore, in a mobile terminal that feeds power from the circuit board to the antenna through the through hole, it is possible to further prevent the occurrence of a failure such as a short circuit due to foreign matters such as moisture and dust entering from the outside.

  According to the present invention, it is possible to prevent the occurrence of a failure such as a short circuit caused by a foreign substance such as moisture or dust entering from the outside in a portable terminal that feeds power from a circuit board to an antenna through a through hole. Become.

1 is a plan view of a mobile phone according to a first embodiment of the present invention. It is AA sectional drawing of FIG. It is an enlarged view of the part of E in FIG. It is sectional drawing for demonstrating the assembly procedure of the mobile telephone which concerns on the 1st Embodiment of this invention. It is sectional drawing of the mobile telephone which concerns on the 2nd Embodiment of this invention. It is an enlarged view of the part of G in FIG. It is sectional drawing of the conventional mobile telephone.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment.

(First embodiment)
The mobile phone 1 of the present embodiment is a mobile terminal with a touch panel, and as shown in FIGS. 1 and 2, a display panel 2 and a front cabinet 4 having a display recess 3 for accommodating the display panel 2, A rectangular plate-like circuit board 5 and a rectangular dish-like back cabinet 6 provided with the circuit board 5 are provided.

  As shown in FIGS. 1 and 2, the mobile phone 1 includes a display area D composed of, for example, a plurality of pixels and a frame area F provided around the display area D.

  In addition, a touch panel recess 7 is formed in a rectangular frame shape on the periphery of the display recess 3 in the front cabinet 4. The touch panel recess 7 is provided with a rectangular touch panel 8 that covers the display panel 2 from the front side, and the touch panel 8 is provided in the frame area F as shown in FIG. The double-sided tape 9 is attached to the front cabinet 4.

  Moreover, in this embodiment, as shown in FIG. 2, the front side cabinet 4 and the back side cabinet 6 are formed with irregularities so as to be fitted to each other in the frame region F. The back side cabinet 6 is configured to be attached to the front side cabinet 4 by fastening using screws or the like in a state where the two are fitted.

  Moreover, in this embodiment, as shown in FIG. 2, the cover 21 which covers the back side cabinet 6 which accommodates the circuit board 5 is provided. In the present embodiment, the cover 21 is used as a battery cover.

  Similar to the above-described mounting structure of the back cabinet, as shown in FIG. 2, the back cabinet 6 and the cover 21 are formed with concavities and convexities so as to be fitted to each other in the frame region F. By fitting the cover 21 and the cover 21, the cover 21 is attached to the back cabinet 6.

  The front cabinet 4, the back cabinet 6, and the cover 21 are made of, for example, a resin such as polycarbonate resin, ABS resin, polyamide resin, or a mixture of these resins and glass fillers.

  The front cabinet 4 includes a metal plate 13 that is formed integrally with the resin that forms the front cabinet 4. The metal plate 13 is for improving the rigidity of the mobile phone 1.

  Moreover, as the display panel 2 in this embodiment, a liquid crystal display panel, an organic EL display panel, etc. can be used, for example.

  In the present embodiment, as shown in FIG. 2, the circuit board 5 is arranged on the back side of the metal plate 13 (the side opposite to the display side of the mobile phone 1).

  In the mobile phone 1 according to the present embodiment, as shown in FIGS. 2 and 3, the antenna 11 is formed on the inner surface 21 a of the cover 21 (that is, the surface on the back cabinet 6 side). The antenna 11 is patterned on the inner surface 21a of the cover 21 by, for example, a printing method or a plating method.

  As shown in FIGS. 2 and 3, the antenna 11 has an antenna contact 12, and the antenna contact 12 is provided on the surface of a protrusion (rib) 14 formed on the cover 21. .

  The circuit board 5 provided in the back cabinet 6 is provided with a power supply terminal 10 that supplies power to the antenna 11.

  As shown in FIGS. 2 and 3, the back cabinet 6 is formed with a through hole 17 having a first through hole 15 that houses the power supply terminal 10 and a second through hole 16 that houses the antenna contact 12. Has been.

  Further, as shown in FIGS. 2 and 3, the protrusion 14 provided with the antenna contact 12 is configured to be accommodated in the second through hole 16.

  In the mobile phone 1 according to the present embodiment, power is supplied to the antenna 11 by connecting the power supply terminal 10 and the antenna contact 12 in the through hole 17.

  Here, in the present embodiment, as shown in FIG. 3, a waterproof adhesive member 18 is provided adjacent to the power supply terminal 10 on the surface 16 a of the second through hole 16. Thus, the conductive member 20 that is attached to the surface 16 a of the second through hole 16 and that contacts the power supply terminal 10 and the antenna contact 12 is provided so as to close the first through hole 15.

  In the through hole 17, the power supply terminal 10 and the antenna contact 12 are electrically connected via the conductive member 20, thereby supplying power from the circuit board 5 to the antenna 11.

  With such a configuration, the waterproof adhesive member 18 and the conductive member 20 can prevent foreign matters such as moisture and dust from entering the mobile phone 1 from the outside through the through hole 17. Therefore, in the cellular phone 1 that feeds power from the circuit board 5 to the antenna 11 through the through hole 17, it is possible to prevent the occurrence of a failure such as a short circuit due to foreign matter such as moisture or dust entering from the outside. Become.

  As shown in FIG. 2, in the mobile phone 1, a waterproof packing 22 is provided between the front cabinet 4 and the back cabinet 6. The waterproof packing 22 is continuously arranged along the entire circumference of the front cabinet 4 and the back cabinet 6 and is formed in a frame shape so as to go around the display panel 2.

  By providing the waterproof packing 22, it is possible to prevent foreign matters such as moisture and dust from entering the mobile phone 1 from the outside through the space between the front cabinet 4 and the back cabinet 6. Accordingly, in the mobile phone 1 that feeds power from the circuit board 5 to the antenna 11 through the through hole 17, it is possible to further prevent the occurrence of a failure such as a short circuit due to foreign matter such as moisture or dust entering from the outside. It becomes possible.

  The waterproof packing 22 is made of an elastic material such as silicon.

  Next, an example of an assembly procedure of the mobile phone 1 will be briefly described. First, the display panel 2 is accommodated in the display recess 3 formed in the front cabinet 4. Next, the double-sided tape 9 is provided in the concave portion 7 for the touch panel formed in the front side cabinet 4, and the touch panel 8 is attached to the front side cabinet 4 through the double-sided tape 9, and the display panel 2 is attached to the concave portion 7 for the touch panel. The touch panel 8 is accommodated so as to cover from the front side.

  Next, after preparing the back side cabinet 6 in which the circuit board 5 is accommodated and the power supply terminals 10 of the circuit board 5 are accommodated in the first through holes 15, the front side cabinet 4 and the back side cabinet 6 are fitted by the above-described unevenness. When the front cabinet 4 and the back cabinet 6 are fitted, the back cabinet 6 is attached to the front cabinet 4 by fastening with screws or the like. At this time, the waterproof packing 22 described above is provided between the front cabinet 4 and the back cabinet 6.

  Next, a waterproof adhesive member 18 is provided adjacent to the power supply terminal 10 on the surface 16 a of the second through hole 16. As the adhesive member 18, for example, a waterproof double-sided tape or the like can be used.

  Next, the conductive member 20 is provided on the surface 16 a of the second through hole 16 via the adhesive member 18 so as to close the first through hole 15. At this time, the power supply terminal 10 and the conductive member 20 come into contact with each other, and the power supply terminal 10 and the conductive member 20 are conducted.

  In the present embodiment, as shown in FIG. 4, a plate spring-like metal plate is used as the conductive member 20.

  Next, after preparing the cover 21 in which the antenna 11 is formed and the antenna contact 12 of the antenna 11 is formed on the protrusion 14, as shown in FIG. 4, the cover 21 covers the back cabinet 6 on the back cabinet 6. Install.

  At this time, as shown in FIG. 3, the protrusion 14 provided with the antenna contact 12 is accommodated in the second through hole 16, the conductive member 20 and the antenna contact 12 come into contact, and the conductive member 20 feeds power. It contacts both the terminal 10 and the antenna contact 12. Therefore, in the through hole 17, the power supply terminal 10 and the antenna contact 12 are electrically connected via the conductive member 20, and power can be supplied from the circuit board 5 to the antenna 11.

  Further, as described above, since a plate spring-like metal plate is used as the conductive member 20, the contact between the antenna contact 12 and the conductive member 20 can be secured by the elastic force of the conductive member 20. .

  In the present embodiment, for example, contact between the power supply terminal 10 and the conductive member 20 can be ensured by using a contact spring as the power supply terminal 10.

  As described above, the cellular phone 1 shown in FIG. 2 is manufactured.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. Further, the procedure for assembling the mobile phone is the same as that in the case of the first embodiment described above, and a detailed description thereof will be omitted here.

  As shown in FIGS. 5 and 6, the mobile phone 35 of the present embodiment is characterized in that a waterproof packing 25 is provided in the second through hole 16.

  More specifically, the waterproof packing 25 is provided adjacent to the protrusion 14 and the antenna 11 in the cover 21 so as to close the second through hole 16.

  The waterproof packing 25 is formed of an elastic material such as silicon, for example, as with the above-described waterproof packing 22.

  By providing the waterproof packing 25 that closes the second through hole 16, it is possible to further prevent foreign matters such as moisture and dust from entering the mobile phone 35 from the outside through the through hole 17. Therefore, in the mobile phone 35 that feeds power from the circuit board 5 to the antenna 11 through the through hole 17, it is possible to further prevent the occurrence of a failure such as a short circuit due to foreign matter such as moisture or dust entering from the outside. become.

  Further, since the waterproof packing 25 can also waterproof the contact portion between the antenna contact 12 and the conductive member 20, even if the mobile phone 35 is accidentally dropped into the water, It is possible to prevent the contact portion with the conductive member 20 from being deteriorated by corrosion.

  The above embodiment may be modified as follows.

  In the said embodiment, although it was set as the structure which uses a leaf | plate spring-shaped metal plate as the electrically-conductive member 20, it is good also as a structure which uses the rubber member which has electroconductivity instead of this metal plate. In this case, the contact between the power supply terminal 10 and the antenna contact 12 and the conductive member 20 can be ensured by the elastic force of the rubber member.

  In the above embodiment, the antenna 11 is formed on the inner surface 21 a of the cover 21. However, the antenna 11 may be formed on the outer surface of the cover 21.

  Further, in the above embodiment, the antenna 11 is formed on the cover 21 used as the battery cover. However, a cabinet (that is, the front cabinet 4 and the back cabinet) such as a decorative cover and a part for internal reinforcement. It is good also as a structure which forms the antenna 11 in the components used overlapping 6).

  Moreover, in the said embodiment, as shown to FIG. 2, FIG. 5, it was set as the structure which spaced apart and provided the two power supply terminals 10, However, It is good also as a structure which provides this power supply terminal 10 adjacent.

  In the second embodiment, in order to prevent contact between the antenna 11 and the waterproof packing 25, for example, a configuration may be adopted in which a sealing member having a prevention function is provided between the antenna 11 and the waterproof packing 25. The surface of the antenna 11 may be painted.

  Moreover, in the said embodiment, although the touch panel 8 was mentioned as an example and demonstrated as a protective panel, it is good also as a structure which uses the protective panel formed with glass or transparent resin instead of this touch panel 8. FIG.

  In the above embodiment, a mobile phone has been described as an example. However, the present invention is not limited to this, and for example, PHS (Personal Handy-phone System), PDA (Personal Digital Assistant), personal computer, mobile The present invention can be applied to a device having a display panel such as a tool, an electronic dictionary, and a game machine.

  As described above, the present invention is particularly useful for a portable terminal having an antenna.

1 Mobile phone (mobile terminal)
2 Display panel
3 Display recess
4 Front cabinet
5 Circuit board
6 Back cabinet
7 Touch panel recess
8 Touch panel 9 Double-sided tape
10 Power supply terminal
11 Antenna
12 Antenna contact
13 Metal plate
14 Protrusion
15 First through hole
16 Second through hole
16a Surface of second through hole 17 Through hole
18 Adhesive members
20 Conductive members
21 Cover
21a Inside surface of the cover
22 Waterproof packing (other waterproof packing)
25 Waterproof packing
35 Mobile phone (mobile terminal)
D Display area F Frame area

Claims (6)

A front cabinet,
A back cabinet attached to the front cabinet;
A circuit board provided in the backside cabinet and having a power supply terminal;
A cover covering the back cabinet;
An antenna formed on a surface of the cover and having an antenna contact;
A through hole formed in the backside cabinet and having a first through hole for accommodating the power supply terminal and a second through hole for accommodating the antenna contact;
On the surface of the second through hole, a waterproof adhesive member provided adjacent to the power supply terminal,
A conductive member that is attached to the surface of the second through-hole so as to close the first through-hole through the adhesive member, and is in contact with the feeding terminal and the antenna contact;
In the through hole, the power supply terminal and the antenna contact are electrically connected through the conductive member.   The cover is provided with the antenna contact, a protrusion accommodated in the second through hole, and a waterproof packing provided adjacent to the protrusion and closing the second through hole. The mobile terminal according to claim 1.   The portable terminal according to claim 1, wherein the conductive member is an elastic member.   The portable terminal according to claim 3, wherein the conductive member is a plate spring-like metal member.   The portable terminal according to claim 3, wherein the conductive member is a rubber member having conductivity.   The portable terminal according to any one of claims 1 to 5, wherein another waterproof packing is provided between the front cabinet and the back cabinet.

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