JP2014007515A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accommodate a largest battery possible while reliably fixing a first cabinet and a second cabinet.SOLUTION: A battery fixing part 10 is provided protruded from a sheet metal 8 integrally formed with a first cabinet 3 toward a second cabinet 4 side; the battery fixing part 10 is engaged with a rigid frame 11 attached to a battery 6 arranged on the second cabinet 4 side with respect to the sheet metal 8; and the battery fixing part 10 is engaged also with the second cabinet 4.

Description

  The present invention relates to a portable terminal such as a cellular phone, and more particularly to the structure of the casing.

  2. Description of the Related Art Conventionally, it is known that a casing of a mobile terminal has a first cabinet and a second cabinet, and a liquid crystal display, a battery, a substrate, and the like are built in these cabinets.

  For example, in the small electronic device disclosed in Patent Document 1, a chassis and a main board are fitted between a front cabinet and a back cabinet, and six screws are screwed in the thickness direction of the small electronic device and fastened.

JP 2010-56810 A

  However, in the portable terminal like the above-mentioned Patent Document 1, bosses for fastening screws must be provided at six locations, and in particular, since there is a boss portion in the vicinity of the center in the vertical direction, an attempt is made to place a battery in that portion. Then, there was a problem that the width of the battery was limited.

  This invention is made | formed in view of this point, The place made into the objective is to enable it to accommodate as large a battery as possible, fixing a 1st cabinet and a 2nd cabinet reliably.

  In order to achieve the above object, according to the present invention, a rigid frame is provided in the battery, and the rigid frame and the sheet metal are connected.

Specifically, in the first invention,
It is assumed that the portable terminal has a first cabinet and a second cabinet, and a battery is accommodated inside the first cabinet and the second cabinet.

And in the mobile terminal,
In the first cabinet, a sheet metal is integrally formed, and a battery fixing portion protruding from the sheet metal to the second cabinet side is formed.
The battery is disposed on the second cabinet side of the sheet metal, and a rigid frame attached to the battery is engaged with the battery fixing portion.
The battery fixing portion is also engaged with the second cabinet.

  That is, if the structure is screwed into the boss portion in the thickness direction and fastened as in the prior art, a space corresponding to the outer diameter of the boss portion is required, but according to the above configuration, the boss portion is not provided. In addition, the first cabinet and the second cabinet are securely coupled by engaging the battery fixing portion provided on the sheet metal with the rigid frame provided on the battery and the second cabinet. For this reason, the width of the battery can be increased. In addition, since the rigid frame is provided on the battery itself having a large mass, and the rigid frame is connected to the sheet metal, the battery does not move even if a force is applied to the battery when the portable terminal is dropped.

In the second invention, in the first invention,
The battery fixing part is made of a metal different from the sheet metal in at least one of thickness and material.

  That is, the sheet metal tends to be as thin as possible in order to suppress the thickness of the mobile terminal and to suppress the mass, but according to the above configuration, the battery fixing portion having higher rigidity than the sheet metal is provided. A large battery can be reliably supported.

In the third invention, in the first or second invention,
The first cabinet and the second cabinet are rectangular plates,
The battery fixing part is disposed in the middle of the first cabinet in the longitudinal direction with an interval in the width direction,
The rigid frame is provided in a strip shape in the width direction on the opposite side of the battery from the second cabinet.

  According to said structure, the strength with respect to a bending and a torsion improves markedly by connecting the width direction with a rigid frame with high rigidity in the part which is easy to apply the bending or torsional stress in the middle of the longitudinal direction.

In the fourth invention, in the third invention,
The first cabinet contains a display unit,
The second cabinet contains a main board,
The battery is accommodated between the display unit and the main board.

  That is, when the first and second cabinets are rounded in the thickness direction, the space in the width direction is widest in the middle in the thickness direction of the portable terminal. Since the first cabinet and the second cabinet are joined by the rigid frame in the middle in the thickness direction where the space becomes wider, a battery having a width wider than that of the conventional battery can be arranged.

In the fifth invention, in the fourth invention,
The rigid frame is made of a conductive material and serves as a ground for the main board by being electrically connected to the sheet metal through the battery fixing portion.

  According to the above configuration, since the rigid frame is a component for grounding the sheet metal, it is not necessary to separately provide a component for grounding.

  As described above, according to the present invention, the battery fixing portion protruding from the sheet metal integrally formed in the first cabinet to the second cabinet side is engaged with the rigid frame attached to the battery and the second cabinet. This eliminates the need for a space for providing the boss portion, and can accommodate as large a battery as possible while securely fixing the first cabinet and the second cabinet.

FIG. 3 is an enlarged cross-sectional view taken along line II in FIG. 2. 1 is a perspective view showing a mobile phone according to an embodiment of the present invention. It is the disassembled perspective view which looked at the mobile telephone from the front side. 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 a battery and a rigid frame. It is an expansion perspective view which shows the engaging part of a 2nd cabinet. It is a perspective view which shows the sheet metal of a 1st cabinet.

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

  1 to 4 show a mobile phone 1 (smart phone) as a mobile terminal according to an embodiment of the present invention. The mobile phone 1 includes a first cabinet 3 on the front side having a display unit 2, and the first cabinet. 3 and a second cabinet 4 that covers the rear side of the second cabinet 4, and the rear side of the second cabinet 4 is covered with a rear cover 5.

  In a space formed by the first cabinet 3, the second cabinet 4, and the rear cover 5, a battery 6, a main board 7, and the like are accommodated. Specifically, the first cabinet 3 is formed by insert-molding a sheet metal 8 made of a stainless steel sheet shown in FIG. As shown in FIG. 1, the display unit 2 is disposed on the front side of the sheet metal 8 and includes a liquid crystal display, a touch panel, etc., and is attached to the frame-like display housing recess 3a of the first cabinet 3 by a double-sided tape 3b or the like. It is attached.

  As shown in FIGS. 3 and 4, a total of four screw holes 3 c are formed at the upper and lower ends of the first cabinet 3 with a space left and right. The second cabinet 4 is made of, for example, a resin molded product having a frame shape, and a total of four boss portions 4a are formed at the upper and lower ends corresponding to the screw holes 3c. A screw 9 is inserted into the boss 4a and fastened to the screw hole 3c.

  4 and 8, a pair of battery fixing portions 10 are provided projecting toward the second cabinet 4 at the center in the longitudinal direction of the metal plate 8 with a space left and right. The battery fixing portion 10 is made of a metal different from the metal plate 8 in at least one of thickness and material. For example, the sheet metal 8 may be made of a stainless steel plate having a thickness of 0.1 mm, and the battery fixing portion 10 may be made of a stainless steel plate having a thickness of 0.3 mm. Or you may comprise the battery fixing | fixed part 10 with another material with higher rigidity. As shown in FIGS. 1 and 5, the battery fixing part 10 is made of a member extending in the vertical direction having an L-shaped cross section, and a cabinet engagement hole 10 a for fixing the second cabinet 4 is formed at the center. A pair of battery engagement holes 10b for fixing the battery 6 are formed on both the upper and lower sides, and are fixed to the sheet metal 8 by welding or the like. When the sheet metal 8 is made of a magnesium alloy or the like, the battery fixing part 10 having a large sheet thickness may be integrally formed.

  On the other hand, as shown in FIGS. 4 and 6, the rectangular plate-like battery 6 is disposed on the second cabinet 4 side of the sheet metal 8, and the rigid frame 11 is formed in a strip shape in the width direction on the opposite side of the second cabinet 4. Is provided. The rigid frame 11 only needs to be a conductive metal. For example, the rigid frame 11 is made of a stainless steel plate, and is attached to the back and left and right side surfaces of the battery 6 with double-sided tape or the like. At a position corresponding to 10b, a pair of upper and lower battery engaging portions 11a project outwardly from the left and right. For example, the battery engaging portion 11a is extruded by press working.

  Further, as shown in FIG. 7, a cabinet engaging portion 4b is protruded toward the left and right inner sides on the inner surface of the upper and lower central portions corresponding to the cabinet engaging hole 10a of the second cabinet 4 made of a resin molded product or the like. Yes. The cabinet engaging portion 4b may be integrally formed when the second cabinet 4 is formed.

  With this configuration, in the assembled state of the mobile phone 1, as shown in FIG. 1, the cabinet engaging portion 4 b is engaged with the cabinet engaging hole 10 a, thereby allowing the first through the battery fixing portion 10. The upper and lower intermediate part of the cabinet 3 and the upper and lower intermediate part of the second cabinet 4 are coupled. As shown in FIG. 5, the battery 6 is supported by the sheet metal 8 and the second cabinet 4 by the battery engaging portion 11 a engaging with the battery engaging hole 10 b.

  As shown in FIG. 1, when the first cabinet 3 and the second cabinet 4 (rear cover 5) have a shape that is rounded in the thickness direction, the space in the width direction is the largest in the middle in the thickness direction of the mobile phone 1. . Since the rigid frame 11 is engaged with the battery fixing portion 10 provided so as to protrude to the second cabinet 4 side, the battery 6 is accommodated in the space near the sheet metal 8 on the first cabinet 3 side. be able to. For this reason, the battery 6 is arrange | positioned in the thickness direction intermediate | middle where the space of the width direction becomes the widest.

  And, if the structure is screwed into the boss portion in the thickness direction and fastened as in the prior art, a space corresponding to the outer diameter of the boss portion is required, but in this embodiment, the boss portion is not provided. The battery fixing unit 10 is engaged with the rigid frame 11 provided in the battery 6 and the second cabinet 4, so that the first cabinet 3 and the second cabinet 4 are reliably coupled. For this reason, the width of the battery 6 can be increased.

  Further, the strength against bending and torsion is remarkably improved by connecting the width direction with the rigid frame 11 having high rigidity at a portion where the bending or torsional stress is easily applied in the middle in the longitudinal direction of the mobile phone 1.

  Further, in recent years, lithium ion polymer batteries have been used, but such batteries are not so rigid in themselves. However, in the present embodiment, the rigid frame 11 is provided on the battery 6 itself having a large mass, and the rigid frame 11 is connected to the sheet metal 8, so that even when a force is applied to the battery 6 when the mobile phone 1 is dropped or the like. The battery 6 does not move and damage the main board 7 nearby.

  In addition, the sheet metal 8 tends to be as thin as possible in order to suppress the thickness of the mobile phone 1 and to suppress the mass. However, in the present embodiment, the thickness of the battery fixing portion 10 is made thicker than the sheet metal 8 and is rigid. Since the rigidity is higher than that of the sheet metal 8, the battery 6 having a large mass can be reliably supported.

  Furthermore, since the rigid frame 11 made of a conductive material is electrically connected to the sheet metal 8 through the battery fixing portion 10, the rigid frame 11 serves as a ground for the main board 7. For this reason, it is not necessary to separately provide a grounding component.

  Therefore, according to the mobile phone 1 according to the present embodiment, the rigid frame 11 and the second cabinet 4 in which the battery fixing part 10 protruding from the sheet metal 8 integrally formed in the first cabinet 3 to the second cabinet 4 side is attached to the battery 6. , The space for providing the boss portion becomes unnecessary, and the battery 6 as large as possible can be accommodated while the first cabinet 3 and the second cabinet 4 are securely fixed.

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

  That is, in the above embodiment, the battery fixing portion 10 is provided with one cabinet engaging hole 10a and two battery engaging holes 10b, but the number thereof is not limited, and conversely, a protrusion is provided on the battery fixing portion 10 side. It may be provided to engage with the hole of the battery fixing part 10 or the hole of the second cabinet 4.

  In the above embodiment, the mobile terminal is the mobile phone 1 including a smartphone, but is 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. May be.

  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 battery in a pair of cabinets to be matched.

1 Mobile phone (mobile terminal)
2 display section
3 First cabinet
3a Display housing recess
3b Double-sided tape
3c Screw hole
4 Second cabinet
4a Boss
4b Cabinet engaging part
5 Rear cover
6 battery
7 Main board
8 Sheet metal
9 Screw
10 Battery fixing part
10a Cabinet engagement hole
10b Battery engagement hole
11 Rigid frame
11a Battery engaging part

Claims (5)

In a portable terminal that has a first cabinet and a second cabinet, and a battery is accommodated inside the first cabinet and the second cabinet,
In the first cabinet, a sheet metal is integrally formed, and a battery fixing portion protruding from the sheet metal to the second cabinet side is formed.
The battery is disposed on the second cabinet side of the sheet metal, and a rigid frame attached to the battery is engaged with the battery fixing portion.
The portable terminal, wherein the battery fixing portion is also engaged with the second cabinet. The mobile terminal according to claim 1,
The mobile terminal, wherein the battery fixing part is made of a metal different from the sheet metal in at least one of thickness and material. The mobile terminal according to claim 1 or 2,
The first cabinet and the second cabinet are rectangular plates,
The battery fixing part is disposed in the middle of the first cabinet in the longitudinal direction with an interval in the width direction,
The mobile terminal according to claim 1, wherein the rigid frame is provided in a strip shape in the width direction on the opposite side of the second cabinet of the battery. The mobile terminal according to claim 3,
The first cabinet contains a display unit,
The second cabinet contains a main board,
The portable terminal, wherein the battery is accommodated between the display unit and the main board. The mobile terminal according to claim 4,
The mobile terminal according to claim 1, wherein the rigid frame is made of a conductive material and is electrically connected to the sheet metal through the battery fixing portion, thereby serving as a ground for the main board.