JP4142776B2 - Input pen - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an input pen used in a coordinate input device that can smoothly move a cursor by detecting a coordinate position by a change in electric quantity accompanying a change in capacitance by gently tracing an operation area with a tip of the input pen. is there.
[0002]
[Prior art]
Conventionally, the cursor of the coordinate input device has been moved by gently tracing the operation area with a tip of a finger or an input pen made of a conductive elastic body.
[0003]
[Problems to be solved by the invention]
However, humans have a habit of drawing letters and lines while holding a pen, so drawing with a fingertip was a very cumbersome operation.
[0004]
In addition, to make the tip of the input pen with a conductive elastic body, it becomes hard because it is composed of rubber or a conductive agent such as carbon or metal. The contact area to be obtained was not obtained. Furthermore, the contact area differs depending on the angle at which the pen is tilted, resulting in a problem that accurate input cannot be obtained.
[0005]
An object of the present invention is to provide an input pen that solves the above problems.
[0006]
[Means for solving problems]
In order to achieve the above object, the present invention operates the operation area with an input pen or a finger, detects the coordinate position of the operation part of the operation area by the change in the electric quantity accompanying the change in capacitance, and determines the coordinate position of the operation part. In the input pen used for the coordinate input device for inputting, the tip provided at the front part of the input pen is provided with the core member provided at the front part of the conductive shaft tube and the elasticity attached to the front part of the core member. and body, and hand and made of a conductive rubber deposited on the elastic member, and to set the hardness of the elastic body lower than the hardness of the conductive rubber, furthermore, the conductive rubber of the tip to hold the barrel Configure to conduct.
[0007]
【Example】
FIG. 1 shows a first embodiment of the present invention, in which an input pen is formed by providing a sheath 2 made of a synthetic resin at the rear portion of a shaft cylinder 1 made of a conductive metal, and a tip is formed at the front portion of the input pen. Install the tip. The tip is composed of a core member 3 made of a conductive metal, a relatively soft elastic body 4 fitted around the tip 3A of the core member 3, and a thin wall of 0.1 mm to 0.4 mm attached to the elastic body 4. The conductive rubber 5 is used.
[0008]
Therefore, if the shaft cylinder 1 is held by hand, the conductive rubber 5 can be directly conducted to the shaft cylinder 1 and can be conducted from the conductive rubber 5 through the core member 3 to the shaft cylinder 1. Conductive to the hand holding the shaft cylinder 1.
[0009]
The conductive rubber 5 is composed of conductive rubber formed by putting a conductive agent such as carbon or metal into natural rubber, nitrile rubber, silicon rubber or the like.
[0010]
The elastic body 4 is made of rubber, silicon, urethane, sponge, polyester or the like.
[0011]
Further, the tip is configured such that the contact area is larger than a circle having a diameter of 3 mm when pressed with a force of 50 g, but more preferably, the contact area is larger than a circle having a diameter of 3 mm when pressed with a force of 50 g. If it is configured to be smaller than a circle having a diameter of 8 mm, it is suitable for detecting the accuracy of the coordinate position and the change in the electric quantity.
[0012]
Conductive rubber containing a conductive agent such as carbon becomes relatively hard, but it is lightly pressed by thinning it from 0.1 mm to 0.4 mm and attaching it to a relatively soft elastic body 4. Even so, the desired contact area can be secured.
[0013]
FIG. 2 shows a second embodiment of the present invention, in which an input pen is formed by providing a sheath 2 made of synthetic resin at the rear part of a shaft 1 made of a conductive metal, and a tip is provided at the front part of the input pen. Install the tip. The tip is composed of a relatively soft elastic body 14 and a thin conductive rubber 15 of about 0.1 mm to 0.4 mm attached to the elastic body 14.
[0014]
Accordingly, if the shaft cylinder 1 is held by hand, the conductive rubber 15 can be directly conducted to the hand through the shaft cylinder 1.
[0015]
FIG. 3 shows a third embodiment of the present invention, in which an input pen is formed by providing a sheath 2 made of a synthetic resin at the rear of a shaft 1 made of a conductive metal, and a tip is formed at the front of the input pen. Install the tip. The tip includes a core member 13 made of a conductive metal, a thin conductive rubber 5 of about 0.1 mm to 0.4 mm attached to the front outer surface 13A of the core member 13, and the core member 13 and the conductive rubber. 5 is composed of a filler 6 made of a gel-like substance filled between 5 .
[0016]
Therefore, if the shaft cylinder 1 is held by hand, the conductive rubber 5 can be directly conducted to the shaft cylinder 1 and can be conducted from the conductive rubber 5 through the core member 13 to the shaft cylinder 1. Conductive to the hand holding the shaft cylinder 1.
[0017]
In addition, as a filler, gel-like silicon that forms a gel at normal temperature has excellent cushioning properties. In particular, the product name [Sylpot 300 A & B] sold by Dow Corning Asia Co., Ltd. can be used in a wide temperature range, and handling is also possible. Easy and preferred.
[0018]
FIG. 4 shows a fourth embodiment of the present invention, in which an input pen is constructed by providing a sheath 2 made of a synthetic resin at the rear part of a shaft 1 made of a conductive metal, and a front end of the input pen. Install the tip. The tip includes a core member 23 made of a conductive metal, a thin conductive rubber 25 of about 0.1 mm to 0.4 mm attached to the front outer surface 23A of the core member 23, and the core member 23 and the conductive rubber. 25, a packing material 6 made of a gel material filled between 25 and a room temperature curing type silicone rubber 7 which is positioned in the longitudinal direction of the packing material 6 and sealed to prevent the packing material 6 from being ejected, The silicone rubber 7 is cured between the vicinity of the opening 25 </ b> A of the conductive rubber 25 and the core member 23.
[0019]
[Action]
According to the input pen of the present invention, the conductive rubber of the tip is electrically connected to the user's hand through the shaft tube. Therefore, the conductive rubber is maintained at the same potential as the user's hand holding the input pen.
[0020]
If the tip of the input pen is lightly pressed against the operation area of the coordinate input device, the conductive rubber is deformed to obtain a predetermined contact area, and between the operation part of the coordinate area and the user's hand, A capacitance depending on the contact area is formed. The coordinate position is detected by the change in the amount of electricity accompanying the change in capacitance, and the coordinate position with which the tip is in contact is input.
[0021]
【The invention's effect】
In the input pen of the present invention described above, the tip is composed of an elastic body and a conductive rubber that adheres to the elastic body, and the hardness of the elastic body is set lower than the hardness of the conductive rubber, The elastic body and conductive rubber are deformed by simply pressing and tracing the tip of the input pen to obtain a predetermined contact area, and the input operation can be performed as if holding a pen and drawing characters and lines. In addition, there is an effect that an accurate coordinate position can be input .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an input pen according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing an input pen according to a second embodiment of the present invention.
FIG. 3 is a cross-sectional view showing an input pen according to a third embodiment of the present invention.
FIG. 4 is a cross-sectional view showing an input pen according to a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaft cylinder 3 Core member 4 Elastic body 5 Conductive rubber 6 Filling material 13 Core member 14 Elastic body 15 Conductive rubber 25 Conductive rubber

Claims (4)

In an input pen used in a coordinate input device that operates an operation area with an input pen or a finger, detects a coordinate position of an operation part of the operation area by a change in electric quantity accompanying a change in capacitance, and inputs a coordinate position of the operation part. the distal tip provided at a front portion of the input pen, constitute an elastic member, the conductive rubber deposited on the elastic member, and to set the hardness of the elastic body lower than the hardness of the conductive rubber, furthermore, conductive by constituting in contact sex rubber to the front of the conductive barrel, the input pen conductive rubber of said distal tip is characterized by being configured to conduct a hand holding the barrel. In an input pen used in a coordinate input device that operates an operation area with an input pen or a finger, detects a coordinate position of an operation part of the operation area by a change in electric quantity accompanying a change in capacitance, and inputs a coordinate position of the operation part. The tip provided on the front part of the input pen has a core member provided on the front part of the conductive shaft tube, an elastic body attached to the front part of the core member, and a conductive material attached to the elastic body . constituted by rubber, and set the hardness of the elastic body lower than the hardness of the conductive rubber, further conductive rubber of said distal tip is characterized by being configured to conduct a hand holding the barrel input pen. In an input pen used in a coordinate input device that operates an operation area with an input pen or a finger, detects a coordinate position of an operation part of the operation area by a change in electric quantity accompanying a change in capacitance, and inputs a coordinate position of the operation part. The tip of the tip of the input pen is filled between the core member provided at the front part of the conductive shaft cylinder, the conductive rubber attached to the core member, and the core member and the conductive rubber. constituted by filler consisting of gel-like substance which is, and set the hardness of the filler lower than the hardness of the conductive rubber, furthermore, so that the conductive rubber of said tip is electrically connected to the hand holding the barrel An input pen characterized in that it is configured. The input pen according to any one of claims 1 to 3, wherein the tip has a contact area larger than a circle having a diameter of 3 mm when the conductive rubber is pressed with 50 g.

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