JP4201065B2 - Phone with touch key - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a telephone with a touch key, and in particular, with respect to a mobile phone or a PHS navigation key, the four direction keys excluding the center (center) key are arranged as a scroll key by arranging a sheet-like touch key. The space for the display device mounting portion can be secured.
[0002]
[Prior art]
Conventionally, a navigation key for a mobile phone or a PHS has a configuration in which all keys including a dial key are placed on a rubber sheet and a diaphragm is installed at a contact portion thereof.
[0003]
That is, as shown in the longitudinal sectional view of the cellular phone or the like in FIG. 5, the conventional navigation key is one of four direction keys, and the front key 52 on the liquid crystal display (LCD) 51 side is a center key. Similar to 53, it is placed on a rubber sheet and a diaphragm contact is placed underneath. However, the diaphragm contact is not shown in FIG.
[0004]
[Problems to be solved by the invention]
However, in the conventional example, a space for mounting a liquid crystal display device that controls the liquid crystal display element must be secured on the front key side, so the presence of the front key makes it impossible to earn a space factor and reduce the size. There was a problem that it was not possible to reduce the weight and weight.
[0005]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a telephone with a touch key that can secure a space for a liquid crystal display device mounting portion.
[0006]
[Means for Solving the Problems]
The invention of claim 1, wherein the present invention to solve the above problem, has a navigation key having a four-direction touch keys, the four-way touch key of the sheet, a portion of the touch key The navigation key is arranged so as to overlap with a part of the liquid crystal display device. The navigation key includes a lower sheet in which thin-film conductive connectors are formed in four parts, and the lower sheet side surface. An intermediate sheet in which a conductive film is applied to a part corresponding to each of the two parts; and an upper sheet in which a convex part is formed on the surface corresponding to the conductive film on the surface of the intermediate part on the sheet side; And a hole is provided in each central part of the lower sheet and the intermediate sheet, and a button switch is inserted through the hole .
[0007]
Since in this manner to form a sheet, the space of the liquid crystal display device mounting unit can be secured, compact it by the device, Ru can contribute to weight reduction.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0019]
FIG. 1 is a front view showing an overall configuration of a telephone with a touch key according to an embodiment of the present invention. In FIG. 1, a navigation key composed of a touch key 2 is provided on the dial key side of a liquid crystal display (LCD) 1 (however, the center key 3 has a diaphragm with a contact portion as before. 2 is a longitudinal sectional side view showing the configuration of the telephone with a touch key according to the embodiment of the present invention when cut along the line AA in FIG. . 3 is a cross-sectional side view showing the configuration of the telephone with a touch key according to the embodiment of the present invention when cut along the line BB in FIG. FIG. 4 is an exploded configuration diagram of the touch key module.
[0020]
The configuration of the telephone with a touch key according to the embodiment of the present invention will be described with reference to FIGS. In FIG. 2, the center key 3 of the navigation key of the cellular phone or the PHS is a button switch in which a contact portion is formed on the printed circuit board 5 and a diaphragm is formed, but other navigation keys excluding the center key 3 The touch keys composed of modules are used.
[0021]
The configuration of the touch key will be described with reference to FIGS. As shown in FIGS. 3 and 4, the touch key module 6 is composed of three sheets having an inverted triangular shape.
[0022]
That is, as shown in FIG. 4C, the lower sheets are formed in a comb-teeth shape so that the metal conductive films constituting one of the electrodes are engaged with each other so that the contact portion is formed. As shown in the drawing, the metal conductive films on the ground side are connected in common and are led to the conductive connector portion 10, and the lead wires to the conductive connector portion 10 are insulated.
[0023]
Further, as shown in FIG. 3, the lower sheet is placed on the front case 4 and fixed by gluing, and the thinned conductive connector portion 10 is pulled out from the crack of the front case 4 and printed circuit board. (PCB) It is connected to a connector 11 attached to the rear case 7 via a hole 5.
[0024]
Also, as shown in FIG. 4B, the intermediate sheet is composed of a thin film polyfilm sheet coated with a carbon film, which is a conductive film, corresponding to the contact portion of the lower sheet. Yes. And the gluing member is arrange | positioned in the part to which a carbon membrane | film | coat is not apply | coated.
[0025]
Further, as shown in FIG. 4A, the upper sheet (touch key top) is made of active urethane rubber, and a portion corresponding to the contact portion (near the arrow in the drawing) is convex. A portion corresponding to the central key is formed integrally. And the gluing member is arrange | positioned in the peripheral part of the said upper sheet | seat which faces the said sheet | seat of the intermediate part, and it can glue now on the sheet | seat of the said intermediate part, and the said lower sheet | seat.
[0026]
Here, the operation of the touch key (switch) will be briefly described. In FIG. 4A, for example, if the Δ portion of the upper sheet (touch key top) is touched by a finger, the corresponding portion of the intermediate sheet is the lower portion. A current flows from one electrode to the other electrode in contact with a corresponding portion of the sheet, thereby operating as a touch key.
[0027]
【The invention's effect】
With the touch key telephone of the present invention as described above, it has a navigation key having a four-direction touch keys, the four-way touch key of the sheet, a portion of the touch key, the liquid crystal display device The navigation key corresponds to each of the four parts on the lower sheet side where the thin-film conductive connectors are formed on the four parts, and on the surface on the lower sheet side. An intermediate sheet in which a conductive film is applied to the part to be formed, and a sheet on the sheet side of the intermediate part, and an upper sheet in which a convex part is formed in a part corresponding to the conductive film, A hole portion is provided in each central portion of the lower sheet and the intermediate sheet, and a button switch is inserted from the hole portion .
[0028]
Since in this manner to form a sheet, the space of the liquid crystal display device mounting unit can be secured, compact it by the device, Ru can contribute to weight reduction.
[Brief description of the drawings]
FIG. 1 is a front view showing an overall configuration of a telephone with a touch key according to an embodiment of the present invention;
FIG. 2 is a longitudinal sectional side view showing a configuration of a telephone with a touch key according to an embodiment of the present invention when cut along the line AA in FIG.
3 is a cross-sectional side view showing the configuration of the telephone with a touch key according to the embodiment of the present invention when cut along the line BB in FIG.
FIG. 4A is a diagram showing a configuration of an upper sheet;
(B) The figure which shows the structure of the sheet | seat of an intermediate part,
(C) A diagram showing the configuration of the lower sheet;
FIG. 5 is an enlarged longitudinal sectional view showing a corresponding part of a mobile phone or the like having a conventional navigation key in five directions.
[Explanation of symbols]
1, 51 Liquid crystal display (LCD)
2 Touch keys 3, 53 Center keys 4, 54 Front case 5, 55 Printed circuit board (PCB)
6 Touch key module (middle sheet, lower sheet)
7 Rear case 8 Diaphragm 9 Touch key top (upper sheet)
10 Conductive connector
11 Connector
52 Forward key

Claims (5)

4 has a navigation key having a direction touch keys, the four-way touch key of the sheet, a portion of the touch key is arranged overlapping a part and below the liquid crystal display device, said navigation key Is a lower sheet in which thin-film conductive connectors are respectively formed on four parts, and an intermediate part in which a conductive film is applied to a part corresponding to each of the four parts on the surface on the lower sheet side. A sheet and an upper sheet in which a convex portion is formed in a portion corresponding to the conductive film on the sheet side surface of the intermediate portion, and each central portion of the lower sheet and the intermediate portion sheet A telephone with a touch key , wherein a hole is provided in each of which a button switch is inserted .   2. The telephone with a touch key according to claim 1, wherein the navigation key is formed of an inverted triangular module. The module includes a lower sheet in which a comb-shaped contact portion is divided into four parts so that the metal conductive films mesh with each other, and a portion corresponding to the contact portion on the lower sheet side surface It is composed of an intermediate sheet coated with a carbon film and an upper sheet made of active urethane rubber and having a convex portion formed on a surface corresponding to the carbon film on the sheet side surface of the intermediate part. The telephone with a touch key according to claim 2, wherein the telephone has a touch key. The lower portion of the sheet is glued to the front case, a touch key according to claim 1 to 3, wherein said sheet and said upper portion of the seat of the intermediate portion is characterized in that it is formed by gluing to the lower portion of the seat which is glued With telephone. Before SL upper portion of the seat is, the intermediate portion sheet and a touch key with the phone of claims 1 to 4, wherein the covering the Botansui' switch of.

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