JPS6225786Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coordinate position detection element for detecting a coordinate position when inputting characters or figures by hand in a coordinate input device.

The structure of conventional coordinate position detection elements consists of two insulating substrates on which multiple conductive wires are arranged in parallel at regular intervals.
There are two types of substrates, one in which these parallel conductors are orthogonally arranged with a pressure-sensitive conductive rubber sheet interposed between them, and one in which the conductor pattern of the above insulating substrate is formed by etching. Since the device detects the location where pen pressure is applied, it has poor resolution and is structurally difficult to manufacture in a large size.

The present invention provides a novel coordinate position detection element that improves the above-mentioned conventional drawbacks, and will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the structure of a coordinate position detection element according to the present invention, which is composed of a first element A and a second element B. The first element A includes an array 2 of a plurality of rubber-like elastic material-coated threads arranged in parallel at regular intervals, for example, plastic threads 1 whose surfaces are coated with insulating rubber such as room temperature vulcanized silicone rubber, and this array. It consists of an array 4 of conductive rubber-like elastic material covered yarns 3 arranged between two adjacent yarns. As shown in the enlarged sectional view of FIG. 2, the diameter of the conductive rubber-like elastic material-covered thread 3 is slightly larger than the distance between the rubber-like elastic material-covered threads 1, and the apex thereof It is configured to be higher than the top of the covered yarn 1 by a certain height h'. A flexible insulating substrate 5 is disposed on the side of the array 4 of the conductive rubber-like elastic material-covered threads 3, and the array 2 of the rubber-like elastic material-covered threads 1 and the conductive rubber-like elastic material-covered thread 3 and an array 4 are fixed to the flexible insulating substrate 5 with an adhesive 6. On the other hand, the second element B includes an array 12 of a plurality of insulating threads, such as plastic threads 11, arranged in parallel at regular intervals, and an array of metal conductive wires 13 arranged between adjacent threads of the array 12. Consists of 14. As shown in the enlarged cross-sectional view of FIG. 100 μm). A hard insulating substrate 15 is placed on the side of the insulating thread array 12, and the insulating thread 11 array 12 and the metal conductive wire 13 array 14 are fixed to the hard insulating substrate 15 with an adhesive 16. It has been done. The first element A and the second element B are combined so that the respective arrays of both elements are perpendicular to each other to form upper and lower electrodes.

FIG. 4 is a sectional view of the coordinate position detecting element of the present invention constructed as described above, in which the array 4 of the conductive rubber-like elastic material covered thread 3 of the first element A and the metal conductive wire of the second element B are shown. The 13 arrays 14 have a height h'' (30 μm to 100 μm) due to the intervening rubber-like elastic body covered yarn 1.
m). Now, when pressure is applied to the pen P at any position on the surface of the device of the present invention, as shown in FIG. When pressed, the adjacent rubber-like elastic body-coated thread 1 is pushed aside and the metal conductive wire 13 is brought into contact with the metal conductive wire 13 to become energized, so that the position can be detected. At this time, due to the elasticity of the displaced rubber-like elastic material-covered thread 1, a force in the opposite direction to the pressing force is applied to the adjacent conductive rubber-like elastic material-covered thread 3' other than the part to which the pen pressure is applied. Because of this, there is no need for more sensitivity than is necessary, and an element with extremely high resolution compared to conventional structures can be obtained. When the writing pressure of the pen P is released, the conductive rubber-like elastic material-covered thread 3 returns to the state shown in FIG. 4 due to the elasticity of the adjacent rubber-like elastic material-covered thread 1.

Note that the insulating substrate 5 of the first element A is made of a flexible material so that the pressing force to the conductive rubber-like elastic body covered thread 3 is sensitively transmitted, while the insulating substrate 15 of the second element B is needs to be made of a hard material so that it can make good contact with the metal conductive wire 13 due to pen pressure. In addition, the distance between the adjacent conductive rubber-like elastic body covered yarns 3 of the first element A, and the interval between the adjacent insulating yarns 1 of the second element B
The interval between 1 and 2 can be adjusted to an appropriate size, for example, 50 to 100 μm, by selecting the outer diameter of each.

As explained above, according to the present invention, the position detection element does not have a pressure-sensitive conductive rubber sheet as in the past, so it has high resolution and is inexpensive, and the conductor arrangement is not etched but winding. It has practical effects such as being able to easily manufacture large-sized products.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of the coordinate position detection element according to the present invention, FIGS. 2 and 3 are enlarged sectional views of the same essential parts, and FIGS. 4 and 5 are the same essential parts showing an embodiment. It is an enlarged sectional view. DESCRIPTION OF SYMBOLS 1... Rubber-like elastic material covered yarn, 2... Array thereof, 3... Conductive rubber-like elastic material covered thread, 4... Arrangement thereof, 5... Flexible insulating substrate, 11... Insulating thread , 12...Array thereof, 13...Metal conductive wire,
14... Array thereof, 15... Hard insulating substrate, A
...First element, B...Second element.

Claims (1)

[Scope of utility model registration request] An array 2 of a plurality of rubber-like elastic material-coated threads 1 arranged in parallel at regular intervals, and a diameter slightly larger than the distance between the rubber-like elastic material-covered threads 1 arranged between adjacent threads of this arrangement 2. Conductive rubber-like elastic material covered thread 3
an array 4 of the rubber-like elastic body-coated yarn 1, an array 4 of the conductive rubber-like elastic body-covered yarn 3;
a first element A consisting of a flexible insulating substrate 5 fixed with adhesive; an array 12 of a plurality of insulating threads 11 arranged in parallel at regular intervals; a hard insulating substrate 15 to which the insulating thread array 12 and the metal conductive wire 13 array 14 are fixed; 1. A coordinate position detecting element comprising an element B, and wherein the first element A and the second element B are combined so that the arrays of the first element A and the second element B are orthogonal to each other to form upper and lower electrodes.