JP2014022889A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a charging structure of a rechargeable battery, a number of components of the charging structure being reduced and the charging structure being able to be installed even in a small space.SOLUTION: A portable terminal includes: internal terminals 8 arranged inside a rear surface side cabinet 4 (a housing) so as to charge a rechargeable battery 6; and external terminals 11 that are at least partially exposed from the rear surface side cabinet 4 so as to take in external power. The external terminals 11 and the internal terminals 8 are electrically connected by conductive screws 13 for attaching the external terminals 11 to the housing.

Description

  The present invention relates to a portable terminal having a rechargeable battery built in a housing, and more particularly to its charging structure.

  Conventionally, in this type of mobile terminal, as in Patent Document 1, for example, a pair of metal members and a flat plate shape are formed, and the pair of metal members are spaced and fitted so as to be exposed from both surfaces of the flat plate, respectively. There is known a charging terminal unit comprising a resin member and a ring-shaped rubber member fitted to the outer surface of the resin member.

  A mobile terminal having such a charging terminal unit includes, for example, a pair of windows 110 provided so as to penetrate the inside and outside of the back side cabinet 104, as in the mobile phone 101 shown in FIGS. The side cabinet 103 is provided with a unit accommodating portion 112 formed in a shape for accommodating the resin member 109 of the charging terminal unit 106 corresponding to the pair of window portions 110, and the pair of charging terminals 111 are respectively paired with the window portions. In addition to being exposed to the outside of the back side cabinet 104 via 110, it is exposed to the inside of the front side cabinet 103 and comes into contact with the internal terminals 108 of the substrate 107. Further, the charging terminal unit 106 is fitted into the unit housing portion 112 so that the waterproof seal 114 is in close contact with the inner surface of the unit housing portion 112.

  In addition, in the electronic device of Patent Document 2, a housing member, a lid that is detachable from the housing member and has an opening, and a terminal that is held by the housing member and is exposed from the opening, And an external terminal portion that is movable between a position where the terminal is inserted into the opening and a position retracted from the opening, and an elastic member that biases the external terminal portion to the insertion position. It is known.

JP 2009-140834 A JP 2010-220082 A

  However, in the structure as described in Patent Document 1, the charging terminal 111 is a set of charging terminal units 106 fixed to the resin member 109, which has a large number of parts, a large size, and requires a large installation space. There's a problem.

  Further, the structure as in Patent Document 2 has a problem that the structure of the charging terminal itself is complicated and has a large number of parts, and cannot be removed once inserted.

  This invention is made | formed in view of this point, The place made into the objective is to enable it to arrange | position in a small space, reducing the number of parts in the charging structure of a rechargeable battery.

  In order to achieve the above object, the present invention uses a conductive screw for fixing the external terminal to the housing.

  Specifically, in the first invention, a portable terminal having a rechargeable battery built in a housing is targeted.

And the mobile terminal
An internal terminal provided in the housing for charging the rechargeable battery;
An external terminal provided in the housing, at least part of which is exposed from the housing, and for taking in external power;
The external terminal is fixed to the casing, and a conductive screw is provided for electrically connecting the external terminal and the internal terminal.

  According to the above configuration, since the screw for fixing the external terminal is also used as a component for electrically connecting the external terminal and the internal terminal, the number of components is smaller than that of a unit component such as a conventional charging terminal unit. Reduces and occupies less space. Since it is a screw type, it is easy to exchange external terminals.

In the second invention, in the first invention,
The external terminal is provided on the inclined surface or curved surface of the corners of the two side surfaces of the housing.

  According to said structure, since an external terminal can be arrange | positioned in the narrow space like the inclined surface or curved surface of the corner | angular part of two side surfaces, the thickness of a portable terminal can be made thin.

In the third invention, in the second invention,
The conductive screw is inserted from the inside of the housing at the corner, and a waterproof seal is provided between the head of the conductive screw and the periphery of the screw portion of the housing.

  According to said structure, since a screw head is not exposed, it looks good, and it is reliably waterproofed by a screw head and a screw part periphery by fastening.

In the fourth invention, in the third invention,
The casing is covered with a lid member,
The lid member has a charging window for exposing the external terminal,
The tip of the conductive screw is covered with the lid member.

  According to said structure, since the front-end | tip itself of an electroconductive screw is hidden in a cover member, it looks good.

In the fifth invention, in the third or fourth invention,
The conductive screw is bonded to the external terminal with a conductive adhesive.

  According to said structure, a conductive screw is reliably prevented from falling without reducing electroconductivity by making the adhesive agent for retaining a conductive screw into a conductive adhesive.

  As described above, according to the present invention, the internal terminal for charging the rechargeable battery is provided in the housing, and the external terminal for taking in external power, at least part of which is exposed from the housing, is provided with the conductive screw. By fixing to the state and electrically connecting the external terminal and the internal terminal, the number of parts can be reduced and space saving can be achieved.

FIG. 4 is an enlarged cross-sectional view taken along line II in FIG. 3. It is the perspective view which looked at the mobile telephone which concerns on embodiment of this invention from the back side. It is a left view of a mobile phone. It is the disassembled perspective view which looked at the mobile telephone from the back side. It is the VV line expanded sectional view of FIG. It is a perspective view which expands and shows an external terminal, an electroconductive screw, an internal terminal, and its periphery. It is a perspective view which expands and shows a conductive screw and an external terminal. FIG. 2 is a view corresponding to FIG. It is a disassembled perspective view of the charging structure which concerns on a prior art.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 5 show a mobile phone (smart phone) 1 as a mobile terminal according to an embodiment of the present invention. The mobile phone 1 has a front cabinet 3 that houses a display unit 2 on the front side. A back side cabinet 4 as a housing is connected to the back side of the front side cabinet 3. The back surface of the back side cabinet 4 is covered with a rear cover 5 as a lid member, and the rechargeable battery 6 is covered with the rear cover 5. A main board 7 is disposed on the front side of the rechargeable battery 6, and an internal terminal 8 for charging the rechargeable battery 6 is connected to the main board 7. The internal terminal 8 is made of a conductive metal having elasticity.

  On the other hand, as shown in FIG. 2, a pair of charging window portions 10 for charging the rechargeable battery 6 are formed at intervals in the vertical direction in the lower right portion when viewed from the rear surface of the rear cover 5. A contact portion 11a of the external terminal 11 for taking in external power from each charging window portion 10 is exposed. As shown in FIG. 1 and FIG. 7 in an enlarged manner, the external terminal 11 has a screw hole 11b, and a conductive material inserted from the inside into a screw insertion hole 12 formed in the front-side cabinet 3 in the screw hole 11b. The front end of the cabinet 13 is fixed by fastening the tip of the screw 13. The screw insertion hole 12 is formed on the curved surface of the corner formed by the left side surface and the back surface of the front side cabinet 3. A seal groove 12a is formed at the periphery of the screw insertion hole 12, and a waterproof seal 14 such as an O-ring is fitted into the seal groove 12a. When the conductive screw 13 is tightened from the inside, It is compressed by the head 13a and exhibits a waterproof effect. In addition, the conductive screw 13 is adhered to the external terminal 11 by a conductive adhesive, so that the conductive screw 13 is prevented from being detached from the back side cabinet 4 without losing conductivity. Furthermore, as shown in FIGS. 1 and 2, the tip of the conductive screw 13 itself is hidden behind the rear cover 5 and is not exposed, so that it looks good.

  Then, as shown by omitting the back side cabinet 4 in FIG. 6, the external terminal 11 and the internal terminal 8 are electrically connected by the head 13 a of the conductive screw 13 contacting the internal terminal 8. Yes.

  As described above, since the screw for fixing the external terminal 11 is also used as a component for electrically connecting the external terminal 11 and the internal terminal 8, the conventional charging terminal unit 6 shown in FIGS. Compared to such unit parts, the number of parts is reduced and the space occupied is also small. For this reason, since the external terminal 11 can be arranged in a narrow space such as the inclined surfaces or curved surfaces of the corners of the two side surfaces, the thickness of the mobile phone 1 can be further reduced.

  In addition, since the screw-type external terminal as in Patent Document 2 is a screw type, the external terminal 11 can be easily replaced.

  Therefore, according to the mobile phone 1 according to the present embodiment, the number of parts of the charging structure can be reduced and space saving can be achieved.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, the charging window portion 10 is provided on the curved surface on the lower right side when viewed from the back, but this position is not particularly limited, and may be the lower left portion, the upper right portion, etc. It may be provided.

  In the above embodiment, the mobile terminal is a mobile phone, but it may be a PHS (Personal Handy-phone System), a PDA (Personal Digital Assistant), a personal computer, a mobile tool, an electronic dictionary, a calculator, a game machine, or the like. Good.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  As described above, the present invention is useful for a mobile terminal such as a mobile phone having a rechargeable battery built in a housing.

1 Mobile phone (mobile terminal)
2 display section
3 Front side cabinet
4 Back side cabinet (housing)
5 Rear cover (lid member)
6 Rechargeable battery
7 Main board
8 Internal terminals
10 Charging window
11 External terminal
11a Contact part
11b Screw hole
12 Screw insertion hole
12a Groove for seal
13 Conductive screw
13a head
14 Waterproof seal

Claims (5)

In a portable terminal having a rechargeable battery built in the housing,
An internal terminal provided in the housing for charging the rechargeable battery;
An external terminal provided in the housing, at least part of which is exposed from the housing, and for taking in external power;
A portable terminal comprising: a fixed screw for fixing the external terminal to the housing and electrically connecting the external terminal and the internal terminal. The mobile terminal according to claim 1,
The mobile terminal according to claim 1, wherein the external terminal is provided on an inclined surface or curved surface of a corner portion of two side surfaces of the housing. The mobile terminal according to claim 2,
The conductive screw is inserted from the inside of the housing at the corner, and a waterproof seal is provided between the head of the conductive screw and the periphery of the screw portion of the housing. Mobile terminal. The mobile terminal according to claim 3,
The casing is covered with a lid member,
The lid member has a charging window for exposing the external terminal,
A portable terminal, wherein a tip of the conductive screw is covered with the lid member. The portable terminal according to claim 3 or 4,
The portable terminal, wherein the conductive screw is bonded to the external terminal with a conductive adhesive.

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