JP2005012351A - Mobile phone terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of a conventional telescopic mechanism of an antenna that the structure of the mechanism has been complicated because the mechanism requires a plurality of gears, a timing belt, an opening/closing spring or the like. <P>SOLUTION: The antenna telescopic mechanism comprises: a first gear 8 fixed to a rotating shaft 2 of a hinge 6; a second gear 12 meshing with linear gears formed to an antenna 3; a third gear 11 fixed to a rotating shaft of the second gear 12; and a belt 14 stretched over the first gear 8 and the third gear 11. Then the antenna telescopic mechanism automatically extends/contracts the antenna 3 interlocking with opening/closing between a base 4 and a top 5 of a mobile phone terminal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foldable mobile phone terminal, and more particularly to a mechanism for expanding and contracting an antenna in conjunction with opening and closing of the mobile phone terminal.
[0002]
[Prior art]
In recent years, as mobile phones become smaller and more multifunctional, users spend more time using mobile phones. Looking at the types of mobile phones that are currently on the market, there are more folding types than straight types (also called integrated types, stick types, etc.). In the future, as there are features of next-generation mobile phones, the type with built-in antenna may increase, but at present, the folding mobile phone with a movable antenna is the most common type.
[0003]
However, the foldable mobile phone has to manually extend and retract the antenna, and sometimes this operation is performed with one hand. Therefore, conventionally, a method for automatically extending and retracting the antenna of the folding mobile phone has been proposed.
[0004]
For example, Japanese Patent Laid-Open No. 2000-184059 proposes a method for extending and contracting an antenna using a motor and a gear (see Patent Document 1).
[0005]
Japanese Patent Laid-Open No. 5-336022 proposes a method of contracting an antenna with a gear unit of a hinge part (see Patent Document 2).
[0006]
[Patent Document 1]
JP 2000-184059 A (paragraphs 0016 to 0018)
[Patent Document 2]
Japanese Patent Laid-Open No. 5-336022 (paragraphs 0023 to 0024)
[0007]
[Problems to be solved by the invention]
In the thing of patent document 1, since a motor is driven using the electric power of a battery, the lifetime of a battery will become short. Moreover, in the thing of patent document 2, since several gearwheels, a belt-shaped gearwheel, or an opening-and-closing spring etc. were required, there existed a problem that a structure became complicated.
[0008]
The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a mobile phone terminal capable of extending and contracting an antenna with a simple structure.
[0009]
Another object of the present invention is to provide a mobile phone terminal that can extend and contract an antenna without using a battery.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in a foldable mobile phone terminal whose base and top are opened and closed around a hinge portion, a first gear fixed to the rotating shaft of the hinge portion and a linear shape on the antenna A second gear meshing with a gear formed on the second gear, a third gear fixed to the rotation shaft of the second gear, and a belt wound around the first gear and the third gear. And an antenna expansion / contraction mechanism that expands / contracts the antenna in conjunction with opening and closing of the base and the top.
[0011]
Further, according to the present invention, in a foldable mobile phone terminal in which a base and a top are opened and closed around a hinge portion, a first gear fixed to a rotation shaft of the hinge portion and a gear linearly formed on an antenna A second gear that meshes with the second gear, a third gear fixed to the rotation shaft of the second gear, and a fourth gear that transmits the rotation of the first gear to the third gear. And an antenna extending / contracting mechanism for extending / contracting the antenna in conjunction with opening and closing of the base and the top.
[0012]
Furthermore, the present invention provides a folding mobile phone terminal whose base and top are opened and closed around a hinge part, a power generation device that generates power by rotation of a rotation shaft of the hinge part, and a motor that rotates by the power of the power generation device. And a mechanism for converting the rotation of the motor into an expansion / contraction movement of the antenna, and an antenna expansion / contraction mechanism for extending / contracting the antenna in conjunction with opening / closing of the base and the top.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view showing an embodiment of a foldable mobile phone terminal having an automatic antenna extension / contraction assisting device of the present invention, and FIG. 2 is a side view thereof. Note that the mobile phone terminal includes a mobile phone, a PHS, and the like.
[0014]
In the figure, reference numeral 1 denotes an automatic antenna extension / contraction assisting device mounted inside a foldable mobile phone terminal, and 2 denotes a shaft. 3 is an antenna, 4 is a base, 5 is a top, and 6 is a hinge. In the mobile phone terminal, the base 4 and the top 5 can be folded around the hinge portion 6. The antenna 3 has a telescopic structure. The automatic antenna expansion / contraction assisting device 1 converts the rotation of the top 5 transmitted through the shaft 2 of the hinge portion 6 into a movement for expanding and contracting the antenna 3.
[0015]
FIG. 3 shows a flowchart in this case. When the mobile phone terminal opens and closes (S101), the shaft 2 rotates accordingly (S102), and the antenna automatic extension / contraction assisting device 1 converts the rotation of the shaft 2 into a stretching motion by the vertical movement of the antenna 3 (S103, S104). ).
[0016]
When the mobile phone terminal is opened and closed in this manner, the antenna 3 simultaneously expands and contracts by the function of the antenna automatic expansion and contraction assisting device 1, so that an operation of manually extending and retracting the antenna can be omitted. Further, even when one hand is blocked, the antenna 3 can be easily extended and the usability of the mobile phone terminal can be improved.
[0017]
FIG. 4 shows an example of the automatic antenna extension / contraction assisting device 1. 4A is a plan view and FIG. 4B is a side view. In the figure, reference numeral 7 denotes a gear box composed of several gears, and the gear 8 is fixed to the shaft 2. The rotation of the gear 8 is transmitted to the gear 12 via the gear 9, the gear 10, and the gear 11, and the gears 8, 9, 10, and 11 constitute a two-stage gear device. Further, the gear 12 is fixed to the gear 11 by a shaft 13, and the entire gear box 7 is a multistage gear device.
[0018]
The shaft 2 rotates when the top 5 of the mobile phone terminal opens and closes, and the gear 8 fixed to the shaft 2 rotates when the shaft 2 rotates. A straight tooth gear (not shown) is formed in the antenna 3 along the longitudinal direction, and a gear 12 is engaged with the gear. Therefore, the rotational motion of the gear 12 is converted into the linear motion of the antenna 3, and the antenna 3 expands and contracts. Since the gearbox 7 is composed of only a few gears, it does not require power and does not place a burden on the battery.
[0019]
Next, the operation when the mobile phone terminal opens and closes will be described with reference to FIG. First, when the user opens the top 5 of the mobile phone terminal (S201), the shaft 2 rotates counterclockwise (the rotation direction is based on the state viewed from the side surface in FIG. 1) (S202). Since the gear 8 is fixed to the shaft 2, the rotation direction and the number of rotations are both the same as those of the shaft 2 (S203). The rotation of the gear 8 is converted into a fast clockwise rotation of the gear 9 having a smaller radius than the gear 8 (S204).
[0020]
The rotation of the gear 9 is transmitted to the gears 10 and 11, and the gears 10 and 11 have the same shape as the gear 9 and thus rotate at the same speed. The rotation directions are counterclockwise and clockwise, respectively (S205, 206). The shaft 13 rotates clockwise by the rotation of the gear 11 (S207), and the gear 12 also rotates clockwise (S208). Since the gear 11 and the gear 12 are fixed by the shaft 13, the rotational direction and the rotational speed of the gear 12 are the same as those of the gear 11. Then, the clockwise fast rotation of the gear 12 changes to the upward movement of the antenna 3 (S209). When the cellular phone terminal is closed, the reverse operation is performed and the antenna 3 is contracted. Therefore, since the antenna 3 expands and contracts by opening and closing the mobile phone terminal, there is no need to manually expand and contract the antenna 3.
[0021]
Thus, the antenna automatic extension / contraction assisting device 1 is mounted so as to connect the shaft 2 inside the hinge portion 6 and the antenna 3, so that the antenna 3 simultaneously expands and contracts by opening and closing the mobile phone terminal. Therefore, the trouble of manually extending and retracting the antenna 3 can be reduced, and the antenna 3 can be easily expanded and contracted even when only one hand is available. It is also possible to adjust the length by which the antenna 3 expands and contracts by adjusting the sizes of the gears 9, 10, and 11.
[0022]
FIG. 6 is a side view showing another example of the automatic antenna extension / contraction assisting device 1. First, the gear 8 is fixed to the shaft 2. A gear 11 is fixed to the rotation shaft of the gear 12, and a belt 14 is wound around the gear 11 and the gear 8. The belt 14 is preferably an elastic material, for example, a rubber one. The antenna 3 is formed with a linear tooth gear (not shown) along the longitudinal direction thereof, and the gear 12 meshes with the teeth of the antenna 3, and the rotation of the gear 12 is caused to expand and contract. Convert to
[0023]
When the top 5 of the mobile phone terminal of FIG. 1 is opened, the shaft 2 rotates in the direction of the arrow in the figure, and the gears 11 and 12 rotate in the direction of the arrow accordingly, so the antenna 3 extends in the direction of the arrow in the figure. . When the top 5 of the mobile phone terminal is closed, the shaft 2 rotates in the opposite direction, so the gears 11 and 12 rotate in the opposite direction, and the antenna 3 contracts in the opposite direction.
[0024]
Thus, the antenna 3 can be expanded and contracted in conjunction with the opening / closing operation of the mobile phone terminal by the automatic antenna expansion / contraction assisting device having a simple structure combining the gear and the belt. Moreover, since the antenna 3 automatically expands and contracts when the mobile phone terminal is opened and closed, the antenna can be easily expanded and contracted even when only one hand is available. Furthermore, it is possible to suppress the generation of noise by using the rubber belt 14.
[0025]
FIG. 7 is a plan view showing still another example of the automatic antenna extension / contraction assisting device 1. In the figure, 2 is an axis, and 3 is an antenna. Further, 15 is a power generation device, 17 is a motor, and 16 is a conducting wire for supplying the power generated by the power generation device 15 to the motor 17. A gear 18 is fixed to the rotating shaft of the motor 17, and a linear tooth gear (not shown) is formed along the longitudinal direction of the antenna 3, and the gear 18 is meshed with the tooth, The rotation of the gear 18 is converted into the expansion / contraction motion of the antenna 3.
[0026]
When the top 5 of the mobile phone terminal is opened, the shaft 2 rotates in one direction, and the rotation of the shaft 2 is converted into electric power by the power generation device 15. The electric power generated by the power generation device 15 is supplied to the motor 17 through the conducting wire 16, and the motor 17 rotates. The rotation of the motor 17 is transmitted to the antenna 3 via the gear 18. At this time, the gear 18 rotates in the direction of extending the antenna 3, so that the antenna 3 automatically extends.
[0027]
When the cellular phone terminal is closed, the shaft 2 rotates in the opposite direction and the motor 17 also rotates in the opposite direction, so the gear 18 also rotates in the opposite direction and the antenna 3 contracts. Thus, the antenna 3 can be expanded and contracted by converting the rotation of the shaft 2 into electric power using the power generation device 15. Moreover, although the electric power for moving the motor 17 is required, since the electric power is generated not by the battery but by the power generator 15, the battery is not consumed.
[0028]
【The invention's effect】
As described above, according to the present invention, the antenna can be expanded and contracted in conjunction with opening and closing of the mobile phone terminal with a simple configuration. Also, the antenna can be easily expanded and contracted even when only one hand is available. Furthermore, the antenna can be expanded and contracted without battery consumption by extending and contracting the antenna using the power of the power generation device.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a foldable mobile phone terminal having an automatic antenna extension / contraction assisting device of the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is a flowchart for explaining an antenna expansion / contraction operation by opening / closing the mobile phone terminal of FIG. 1;
4 is a diagram illustrating an example of an antenna automatic extension / contraction assisting device of FIG. 1;
5 is a flowchart for explaining the operation of the automatic antenna extension / contraction assisting device shown in FIG. 4;
6 is a diagram showing another example of the automatic antenna extension / contraction assisting device of FIG. 1. FIG.
7 is a diagram showing still another example of the automatic antenna extension / contraction assisting device of FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Antenna automatic expansion / contraction auxiliary | assistant apparatus 2 Axis 3 Antenna 4 Base 5 Top 6 Hinge part 7 Gear box 8-12 Gear 13 Axis 14 Belt 15 Power generation apparatus 16 Conductor 17 Motor 18 Gear

Claims (6)

In a foldable mobile phone terminal whose base and top are opened and closed around a hinge part, a first gear fixed to the rotating shaft of the hinge part and a second gear meshing with a linearly formed gear on the antenna A gear, a third gear fixed to the rotation shaft of the second gear, a belt wound around the first gear and the third gear, and interlocking with opening and closing of the base and the top. And a mobile phone terminal having an antenna expansion / contraction mechanism for extending / contracting the antenna. The mobile phone terminal according to claim 1, wherein the belt is made of an elastic material. In a foldable mobile phone terminal whose base and top are opened and closed around a hinge part, a first gear fixed to the rotating shaft of the hinge part and a second gear meshing with a linearly formed gear on the antenna A gear, a third gear fixed to the rotation shaft of the second gear, and a fourth gear for transmitting the rotation of the first gear to the third gear. A cellular phone terminal comprising an antenna expansion / contraction mechanism that expands and contracts the antenna in conjunction with opening and closing. 4. The mobile phone terminal according to claim 3, wherein the fourth gear includes two gears that mesh with each other and have the same rotation speed but opposite rotation directions. In a foldable mobile phone terminal whose base and top are opened / closed around a hinge portion, a power generation device that generates electric power by rotation of a rotation shaft of the hinge portion, a motor that rotates by electric power of the power generation device, and rotation of the motor A mobile phone terminal comprising: an antenna expansion / contraction mechanism including a mechanism for converting the expansion / contraction movement of the antenna to expand / contract the antenna in conjunction with opening / closing of the base and the top. 6. The mobile phone terminal according to claim 5, wherein the conversion mechanism includes a gear formed linearly on the antenna and a gear meshing with the gear.

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