JP3451248B2 - Mobile terminal - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, and more particularly to a mobile terminal that can be made smaller and lighter.

[0002]

2. Description of the Related Art For example, batteries used in mobile terminals such as mobile phones and PHSs (simple mobile phones) tend to be smaller and lighter year by year as battery performance improves. Among batteries used in mobile terminals, in addition to those having a case manufactured by deep drawing an aluminum material, a battery using a laminated type case has been proposed (for example, a special case). Open 20
00-323110). Here, the battery is generally mounted in a housing provided on the back side of the mobile terminal body, and the housing is closed by a lid and mounted. By the way, in a mobile terminal, on the back side of a circuit board provided inside, for example, a metal shield member is interposed so that electromagnetic waves from inside to outside of the mobile terminal body and from outside to inside are shielded as much as possible. It has become.

[0003]

However, in recent years,
In the current situation where the mobile terminal is becoming multifunctional, including the function as a mail terminal, the function as a digital camera, and the music playback function, it is impossible to maintain the size of the current product with the current component layout. There is. The above-mentioned battery with a laminate type case can be made smaller than a battery using a deep-drawing case, so it is possible to meet the above needs, but there are drawbacks in terms of strength and rigidity. is there. Therefore, the present invention provides a portable terminal which can be miniaturized by effectively utilizing the shield member as a reinforcing material of the battery and changing the mounting manner of the battery to the portable terminal body.

[0004]

In order to solve the above-mentioned problems, the invention described in claim 1 provides a portable terminal main body (for example, the portable terminal main body 2 in the embodiment) and a circuit board provided therein. In a mobile terminal (for example, the mobile phone 1 in the embodiment) including a battery (for example, the battery 4 in the embodiment) disposed on the back side of the circuit board 3 in the embodiment (for example, the mobile phone 1 in the embodiment), the battery is a battery cell ( For example, the battery cell 41 in the embodiment and a shield case (for example, the shield case 42 in the embodiment) that covers the surface of the battery cell on the side of the circuit board, and the peripheral wall of the mobile terminal body (for example, in the embodiment). Bottom wall 2a, side wall 2
A mounting hole (for example, the mounting hole 5 in the embodiment) for receiving the battery is formed in a part of b) near the circuit board and along the circuit board, and the battery is detachably inserted into the mounting hole. It is characterized in that With such a configuration, it is possible to reinforce the battery with the shield case, suppress the emission of electromagnetic waves from the circuit board as much as possible, and protect the circuit board from electromagnetic waves and the like. Further, by adopting a mounting form in which the battery is inserted from the mounting hole of the peripheral wall of the portable terminal body, it becomes possible to dispose the shield case at a position close to the circuit board.

The invention described in claim 2 is characterized in that the mounting hole is formed in a side wall or a bottom wall of the portable terminal body. With this structure, it is only necessary to form an opening having a small opening area.

According to a third aspect of the present invention, the battery cell is a laminate pack battery cell. With such a configuration, it is possible to use a battery cell of a laminate pack that can be downsized (thinned).

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a mobile phone (mobile terminal) 1 as a mobile terminal includes a mobile phone main body (mobile terminal main body) 2 and a battery 4 arranged on the back side of a circuit board 3 installed therein. Is equipped with. Specifically, a mounting hole 5 for receiving the battery 4 is formed at a position close to the circuit board 3 and at a position along the bottom wall 2a on the 10-key side, which will be described later, which is a part of the peripheral wall of the mobile terminal body 2. The battery 4 is removably inserted into the mounting hole 5.

As shown in FIGS. 4 and 5, the mobile phone body 2 has a front case 8 on which a display section 6 and a key operation section 7 are arranged.
The ten keys 10 corresponding to the key operation unit 7, the circuit board 3 having the display unit, and the battery 4 are sequentially sandwiched between the rear case 9 and the back case 9. The front case 8 is a member having a U-shaped cross section, and a part of the peripheral edge portion on the back side of the front case 8 goes inward to form an insertion guide 8a for the battery 4. A ground terminal 30 is formed on the back side of the circuit board 3 so that the battery 4 can be inserted together with the insertion guide 8a in a state in which the battery 4 and the insertion guide 8a are close to each other. The battery 4 contacts the ground terminal 30 and is grounded to the circuit board 3. Also, FIG.
As shown in FIG. 3, the circuit board 3 has input / output terminals 3a, 3b, 3
c is provided, and the input / output terminals 3a, 3b, 3c are provided on the surface 4a of the battery 4 in correspondence with the input / output terminals 3a, 3b, 3c.
Terminals 40a, 40b, 40c that are in contact with 3b, 3c are provided.

As shown in FIGS. 6 and 7, the battery 4 includes a battery cell 41 of a laminate pack, a shield case 42, and a battery circuit board 43. The battery cell 41 is provided with an electrolyte and an electrode in a tube-shaped container made of a laminate film formed by laminating resin films on the front and back surfaces of an aluminum foil, and is formed by stacking and sealing the ends of the container. The battery cell 41 of this laminate pack is a battery cell that can be made smaller by reducing the thickness of the container by the thickness of the container as compared with a battery cell using a deep-drawing metal container. Battery cell 41
The positive electrode terminal 41a and the negative electrode terminal 41b are extended in the. Further, the label 11 is attached to the back surface 41d of the battery cell 41.

The battery circuit board 43 is a board including a charge control circuit connected to the positive electrode terminal 41a and the negative electrode terminal 41b of the battery cell 41 and a safety circuit for short circuit, and the positive electrode terminal 41 of the battery cell 41.
a, the negative electrode terminal 41b has the terminals 40a, 40b, 40c connected through the respective circuits. A resin holder 44 is attached to the battery circuit board 43. The holder 44 exposes the terminals 40a, 40b, 40c of the battery circuit board 43 through the opening 44a, and the battery cell 4 together with a shield case 42 described later.
1 functions as a reinforcing material. In addition, holder 4
4, both end portions thereof are provided with anti-slip portions 44b at a portion to be gripped when the battery 4 is inserted.

The shield case 42 is for the battery cell 4
It is polymerized and adhered to the surface 41c of No. 1 through the annular double-sided adhesive tape 12. The shield case 42 includes a shield wall 4 that covers the surface 41c of the battery cell 41.
2a and a side wall 42 extending in the thickness direction of the battery cell 41
b is provided. The shield wall 42a and the side wall 42
With b, the strength and rigidity of the battery cell 41 is ensured, and the electromagnetic wave emitted from the circuit board 3 or an electromagnetic wave entering from the outside is provided by the shield wall 42a arranged close to the back side of the circuit board 3. Electromagnetic waves, disturbances) can be blocked to the maximum. In addition, this shield case 4
The 2 and the holder 44 are preferably connected to each other, for example, by adhesion or engagement. As shown in FIG. 6, in the battery 4 thus formed, the shield case 42 is exposed on the front surface 4a and the battery cells 41 to which the label 11 is attached are exposed on the back surface 4b.

Therefore, when the battery 4 is mounted on the mobile phone body 2, the battery 4 is mounted on the front surface side of the mobile phone body 2, that is, the shield wall 42a of the shield case 42 is mounted on the mobile phone as shown in FIG. The non-slip portion 44b is grasped toward the front case 8 side of No. 1 and inserted into the mounting hole 5 of the mobile phone body 2. Then, the battery 4 is guided by the insertion guide 8a and inserted into the inside, and the terminals 40a, 40b, 40c of the battery 4 come into contact with the input / output terminals 3a, 3b, 3c of the circuit board 3, and the insertion work is completed. At this time, the ground terminal 30 of the circuit board 3 contacts the battery 4.

According to the above embodiment, the battery 4
Is composed of a battery cell 41 and a shield case 42 that covers the surface of the battery cell 41 on the circuit board 3 side,
A mounting hole 5 for receiving the battery 4 is formed on the bottom wall 2a of the mobile phone main body 2 at a position close to and along the circuit board 3, and the battery 4 is inserted in the mounting hole 5.
Since the battery is removably inserted, the shield case 42 reinforces the battery 4 and the circuit board 3
It is possible to suppress the emission of electromagnetic waves from the substrate as much as possible and protect the circuit board 3 from electromagnetic waves and the like.

Further, by adopting a mounting form in which the battery 4 is inserted from the mounting hole 5 of the bottom wall 2a of the mobile phone main body 2, the shield case 42 is provided at a position close to the circuit board 3.
The shield wall 42a can be arranged. Therefore, the one shield case 42 can reinforce the battery 4 of the laminate pack, which is difficult in terms of strength and rigidity, and prevent the emission of electromagnetic waves from the circuit board 3 and ensure protection from external electromagnetic waves. Because you can
The number of parts can be reduced by that amount, and the thickness can be reduced to achieve miniaturization. Furthermore, by adopting the mounting form in which the battery 4 is inserted from the mounting hole 5 of the bottom wall 2a of the mobile phone main body 2, the shield case 42 can be arranged at a position close to the circuit board 3.
The shield effect can be fully exerted.

The mounting hole 5 is formed in the mobile phone body 2
Since it is formed on the bottom wall 2a, which is the bottom wall, it is only necessary to form an opening having a small opening area. As a result, the strength and rigidity of the mobile phone body 2 is increased as compared with the conventional structure in which a large opening is provided on the back side of the mobile phone 1. Furthermore,
Since the battery case 41 of the laminate pack, which can be miniaturized, can be used by the shield case 42, the mobile phone 1 can be further thinned while securing a space for an increased number of functional parts due to the multi-functionalization. Can be miniaturized.

Here, instead of the mobile phone 1 of the above embodiment, the present invention can be applied to a foldable mobile phone 1 as another mode shown in FIG. This mobile phone 1
Since the display unit 20 and the key operation unit 21 are configured to be foldable by the hinge 22, the entire shape is not shown, and the display unit 20 and the key operation unit 21 are shown in a folded state so that the mounting location of the battery 4 can be understood. The battery 4 and the mounting hole 5
Since the above is the same as that of the above-described embodiment, the same portions are denoted by the same reference numerals and the description thereof is omitted.

Therefore, also in this mobile phone 1A, by reinforcing the battery 4 with the shield case 42, the shield case 42 has both the reinforcing function of the battery 4 and the function as a shield member, and the thickness of the mobile phone 1A is increased. The size can be reduced. When applied to the foldable mobile phone 1A as described above,
In addition to the merits peculiar to the foldable type that can be downsized in the length direction, the dimension in the thickness direction in the folded state, which is the neck, can be reduced, and the foldable mobile phone 1A can be further downsized. (Thinning) can be realized.

Next, another embodiment of the present invention will be described with reference to FIGS. In this embodiment, as shown in FIG. 10, a mounting hole 5A for the battery 4A is formed in the side wall 2b as a peripheral wall of the mobile phone body 2, and the mounting hole 5A is formed.
Mobile phone 1B with the battery 4A removably inserted into the
Is. Unlike the battery 4, the battery 4A is provided with a holder 44A for protecting a battery circuit board (not shown) in the length direction, as shown in FIG.
The holder 44A has a convex portion 4 having an arcuate portion.
5A is provided, and the mobile phone main body 2 is correspondingly provided.
A recess 46B is continuously provided in the mounting hole 5A. here,
An anti-slip portion 45Aa is provided on the upper surface of the convex portion 45A. The shield case 42 is formed of the shield wall 42a and the side wall 42b, and the same aspects as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

Therefore, if the battery 4A is inserted into the mounting hole 5A and the battery 4A is pushed in until the convex portion 45A engages with the concave portion 46B, the battery 4A is mounted on the mobile phone body 2 as shown in FIG. be able to.
Therefore, according to this embodiment, in addition to the effects of the above-described embodiment, when the battery 4A is inserted into the mounting hole 5A of the mobile phone body 2, the insertion stroke is shortened.
There is a merit that the mounting work becomes easy. In addition, the convex portion 45
Since the pushing amount of the battery 4A to be inserted can be regulated by A and the recess 46B, there is also an advantage that the insertion operation becomes easy also in this respect.

[0020]

As described above, according to the invention described in claim 1, the battery is reinforced by one shield case and the emission of the electromagnetic wave from the circuit board is suppressed as much as possible. Since it is possible to protect the components from electromagnetic waves and the like, it is possible to reduce the number of parts by that amount and reduce the thickness dimension to achieve miniaturization. In addition, by adopting the mounting form in which the battery is inserted from the mounting hole in the peripheral wall of the mobile terminal body, it is possible to place the shield case in a position close to the circuit board, so that the shield effect can be sufficiently exerted. There is an effect that can be.

According to the second aspect of the present invention, since it is only necessary to form an opening having a small opening area, compared with the case where a large opening is provided on the back side of the mobile terminal main body, It has the effect of increasing strength and rigidity.

According to the third aspect of the present invention, since the battery cell of the laminate pack which can be miniaturized can be used, the space for the increased number of functional parts due to the multi-functionalization can be secured and the whole structure can be further ensured. There is an effect that it can be made thin and miniaturized.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of the present invention before mounting a battery.

FIG. 2 is a partially cutaway perspective view of the embodiment of the present invention.

FIG. 3 is an overall perspective view after mounting the battery according to the embodiment of the present invention.

FIG. 4 is a sectional view taken along the line AA of FIG. 3 according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view of FIG. 3 of the embodiment of the present invention.

FIG. 6 is a perspective view of the battery according to the embodiment of the present invention.

FIG. 7 is an exploded perspective view of FIG. 6 according to the embodiment of the present invention.

FIG. 8 is a perspective view corresponding to FIG. 1, showing another aspect of the embodiment of the present invention.

FIG. 9 is a perspective view of a battery according to another embodiment of the present invention.

FIG. 10 is a perspective view corresponding to FIG. 1 of another embodiment of the present invention.

FIG. 11 is a perspective view showing a battery mounted state of another embodiment of the present invention.

[Explanation of symbols]

1, 1A, 1B Mobile phones (mobile terminals) 2 Mobile phone body (mobile terminal body) 2a Bottom wall (peripheral wall) 2b Side wall (peripheral wall) 3 circuit board 4, 4A battery 5, 5A mounting hole 41 battery cell 42 shield case

Claims (3)

(57) [Claims] 1. A mobile terminal comprising a mobile terminal main body and a battery arranged on the back side of a circuit board provided therein, wherein the battery is a battery cell and a surface of the battery cell on the circuit board side. It is composed of a shield case to cover, and a mounting hole for receiving the battery is formed in a part of the peripheral wall of the mobile terminal body in a position close to and along the circuit board, and the battery is detachably inserted into the mounting hole. A mobile terminal characterized by being performed. 2. The mobile terminal according to claim 1, wherein the mounting hole is formed in a side wall or a bottom wall of the mobile terminal main body. 3. The portable terminal according to claim 1, wherein the battery cell is a laminate pack battery cell.