JP2013214273A - Touch pen for capacitance type touch panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight and inexpensive touch pen with high operability capable of restoring an electroconductive rubber crushed by pressing a panel without using a fixing member such as a metal ring and being applicable to a body shaft with diversified shapes.SOLUTION: A touch pen includes a groove 40 that penetrates a side wall or a center of a body shaft connecting part between a body shaft 20 and a conductive rubber 30 and allows passing of air so as to restore a crushed state. The body shaft 20 has three layers of a plastic 22, a conductive layer 24 and a non-conductive layer 26. Whatever shape the plastic has, the touch pen electrifies a human body by dielectric phenomenon to enable an operation onto a capacitance type touch panel. The surface of the electroconductive rubber is covered with resin or the like to reduce friction of the electroconductive rubber with the panel, thereby improving the operability onto the capacitance type touch panel.

Description

  The present invention relates to a touch pen for inputting information to a portable information terminal. More specifically, the present invention relates to a touch pen that enables selection of icons or buttons and character input on a capacitance sensing touch screen of a terminal such as a smartphone, an electronic dictionary, a digital camera, or an electronic terminal (touch panel).

  In recent years, portable information terminals typified by smartphones and tablet terminals have rapidly spread until the replacement of conventional mobile phones and personal computers. Many of these devices have a capacitive sensing touch screen function on a liquid crystal screen, and can be operated by touching the screen with the tip of a finger.

  The use of a touch pen instead of the tip of a finger in the operation of a touch panel or the like has advantages in many respects such as improving functions and operability in detail and enabling more delicate picture and character input operations. For this reason, the number of users is increasing, and improvements such as reduction in size and weight are also demanded so as to be convenient to carry in correspondence with touch panels.

  Conventional touch pens use metal for the body shaft, conductive rubber for the tip, and are fixed with a fixing member (metal ring) to prevent air leakage, and conductive resin for the body shaft, The mainstream is one that uses conductive rubber and is fixed using a conductive adhesive. These conventional products are heavy due to the use of a metal ring for the body shaft and the joining member, and the structure is complicated and costly. If the metal ring is not used to seal the air inside the conductive rubber, it can be touched. There were problems with respect to the point that the crushed conductive rubber was not restored and a new mold was required to manufacture a touch pen of any shape.

  In addition, silicone rubber is mainly used in conventional conductive rubber, but resistance and friction are large with silicone rubber alone, and when sliding the touch pen against the panel, the rubber part should be smooth. There was a problem that it could not be slid and the operability was poor. For this problem, a method for improving the lubricity by applying diamond coating to the surface of the conductive rubber has been disclosed, but the diamond coating is expensive and has a problem in cost.

1A and 1B are a three-dimensional structure diagram and a cross-sectional view illustrating an internal structure of a conventional touch pen.
The main body shaft 200 in FIG. 1A is formed of a metal shaft, and the conductive rubber 300 is firmly fitted by a fixing member (metal ring) of the metal ring 400. 1B shows that the main body shaft 200 is made of a conductive synthetic resin and is joined to the conductive rubber 300 with a conductive adhesive or the like without using a metal ring. FIG.1 (c) has shown sectional drawing of the internal structure of the touch pen which does not have a metal ring.

  FIG. 2 is a cross-sectional view illustrating a state in which the conductive rubber of a touch pen without a conventional metal ring is crushed and its front and back. 2A shows a state before being pressed against the panel of the touch panel, and FIG. 2B shows a state where there is no fixing member, so that the adhesive property between the conductive rubber 300 and the main body shaft 200 is poor, and the panel is pressed against the panel. The head is crushed and air in the conductive rubber 300 leaks. FIG. 2 (c) shows that the conductive rubber 300 is not restored without a gap for air to enter from the outside in a crushed state.

  As shown in FIG. 2, a conventional touch pen that does not use a metal ring is fixed with a conductive adhesive or the like, but has poor adhesion to the main body shaft, and adheres to the main body shaft as it is after air escapes. As a result, there was a problem that the air could not be restored while being crushed because it was a structure that did not allow air to flow flexibly.

  Therefore, the present invention has been studied in order to solve all the problems such as the conventional heavy weight, high cost and poor operability, and to provide a light and inexpensive touch pen with higher operability than conventional. . Finally, they invented a touch pen having a novel configuration and characteristics.

Utility Model Registration No. 3173117 Utility Model Registration No. 3172736

  The device described in Patent Document 1 is made of a plastic material coated with a conductive paint, and includes a conductive pen shaft having a connecting portion formed at the tip, a fixing member (metal ring) having an annular hollow structure, and a conductive property. It has a nib. In this device, one end of the fixing member is fixed to the connecting portion of the conductive pen shaft, and the conductive pen tip is fixed to the other end by an interference fit method, and the conductive pen tip is firmly fixed on the conductive pen shaft. It is connected with. Therefore, by refining the conductive pen tip and the pen shaft by this fixing member and making it removable, the pen tip can be reused.

  However, since the conductive pen tip of the device described in Patent Document 1 uses a fixing member for joining with the pen shaft, the number of parts is large, the structure is complicated, and there is a problem in cost. It was. In addition, since the conductive rubber is not crushed because it is tightly adhered by a fixing member such as a metal ring, there is a problem that the entire weight increases accordingly. Furthermore, simply applying a conductive paint to the surface of a plastic material has a high possibility that the conductive paint will be peeled off, and the wear resistance is low, which causes a problem in repeated and continuous use.

  The device described in Patent Document 2 includes a main body having a mascot shape made of a hard conductive synthetic resin material, and a pen tip member formed of a soft conductive synthetic resin or conductive silicon rubber. Further, the main body and the pen tip are fixed by a conductive adhesive. With this configuration, the main body has an arbitrary mascot shape, the touch pen itself functions as an accessory that appeals to the user, and the entire main body is made conductive so that the operation function of the touch pen is exhibited.

  However, the touch pen body of the device described in Patent Document 2 is a conductive synthetic resin that is more expensive than a general synthetic resin, and requires a new mold when changing the shape arbitrarily, so there is a problem in terms of cost. It was. In addition, the method of fixing with a conductive adhesive is poor in adhesion, and is not firmly adhered with a joining member such as a metal ring, so there is a possibility that the sealed state may not be maintained. There was a problem that the air was leaked and it was fixed to the main shaft again and could not be restored. Further, since air leaks, there is a problem that it is completely separated from the main body shaft thereafter.

  Therefore, the object of the present invention is to realize that the entire main shaft is made of a conductive material without being made of a conductive material, and the whole body shaft is not used by using a metal ring or the like that has been used as a fixing member. An object of the present invention is to provide a touch pen with high operability that can reduce the weight and can restore the crushed conductive rubber by pressing the panel without having a metal ring or the like.

  Another object of the present invention is to provide touch pens of various shapes such as strap figures without requiring a new mold, which can be applied to any plastic shape regardless of shape. is there.

  In order to achieve the above-mentioned object, the present invention is different from a product using only a metal or a conductive material for the main shaft like the conventional product, and uses a non-conductive material such as plastic as the main shaft, and vapor deposition plating is performed on the surface thereof. Or a conductive layer coated with a conductive paint, and a non-conductive layer coated with a non-conductive material such as a sealing material, or a non-conductive paint that is thin enough to keep the capacitance on the surface. Yes. By having a non-conductive layer that is thin enough to maintain the capacitance, coloring and wear resistance are improved, and when the user touches the main shaft, electricity flows from the main shaft to the conductive rubber due to dielectric phenomenon, The touch pen is made conductive so that electricity is sensed by the panel.

  In addition, the present invention has a groove so as to penetrate the side wall or center of the joint portion at one end of the body shaft, and even if the body shaft and the conductive rubber are firmly fitted, the air is released when the panel is pressed. It is characterized by allowing air flow between the two from a collapsed state.

  Furthermore, when the conductive rubber is brought into contact with the touch panel, only the conductive rubber such as silicon has a large resistance and friction and lacks convenience in operation. Therefore, in order to improve operability and lubricity so that the operation can be performed smoothly without any obstacles, it is characterized in that it is coated with a resin such as acrylic or urethane that is thin enough to keep the capacitance.

  According to the present invention, the main body shaft is composed of three layers of a non-conductor such as plastic, a conductive layer, and a non-conductor such as a sealing material. It is possible to manufacture a touch pen at a lower cost than it is not used. It is advantageous in terms of cost because inexpensive diamond, urethane, or the like can be used for the resin applied to the conductive rubber without using the diamond coating method used for providing the panel with lubricity.

  In addition, by having a groove on the side wall of the joint portion between the main shaft and the conductive rubber, air can be freely transferred without using a metal ring and can be restored even if the conductive rubber is crushed. It is possible to manufacture using only the functional rubber and the main body shaft. Therefore, it has a simpler structure and can be manufactured with fewer parts.

  Furthermore, it is possible to remove and replace the conductive rubber so that the conductive rubber can be fitted to the body shaft without any gaps without using conductive adhesive. It can be applied to various types of body axes to be attached, and a touch pen capable of mass production can be provided.

The solid-structure figure and sectional drawing showing the internal structure of the conventional touch pen. Sectional drawing showing the state which the conductive rubber which does not have the metal ring of the conventional touch pen collapsed, and its front and back. The solid-structure figure and sectional drawing showing the internal structure of the main-body axis | shaft and conductive rubber of this invention. Sectional drawing which represents the state which the conductive rubber of this invention crushed, and its front and back The front view and sectional drawing of the touch pen which concern on 1st Example of this invention. The front view of the touch pen which carried out the shape of the figure by 2nd Example of this invention.

Hereinafter, embodiments of the touch pen of the present invention will be described with reference to the drawings.
FIG. 3 shows an internal structure of a main body shaft 20 whose surface is subjected to vapor deposition plating with a conductive material, and a conductive rubber 30 having a hollow, convexly curved head fitted to the main body shaft of the present invention. It is the three-dimensional structure figure (a) and sectional drawing (b)-(d) showing the internal structure.

  FIG. 3B shows that the main body shaft has three layers of plastic 22, conductive layer 24, and non-conductive layer 26. The hollow plastic 22 can be applied to non-conductors such as other types of resins. The conductive layer 24 is vapor-plated with a conductive material (aluminum, tin, titanium oxide, indium oxide) or coated with a conductive paint. The nonconductive layer 26 is made of a nonconductive material such as a nonconductive paint or a seal material.

  FIG. 3B further shows that a conductive rubber 30 made of a soft rubber material joined to the main body shaft is provided. The conductive rubber is also coated with a resin such as acrylic or urethane that is thin and nonconductive so as to maintain electrostatic capacity in order to improve lubricity during operation. Two grooves 40 are formed on the side wall of the joint portion of the main body shaft with the conductive rubber, and one of the grooves is further deepened so that air can come and go. In the present invention, the number and depth of the grooves do not need to be limited, and are arbitrarily determined so that the air can travel back and forth.

  FIG. 3C shows that there are three layers of a plastic 22, a conductive layer 24, and a non-conductive layer 26. The non-cavity plastic 22 is applicable to non-conductors such as other types of resins. The conductive layer 24 is vapor-plated with a conductive material (aluminum, tin, titanium oxide, indium oxide) or coated with a conductive paint. The nonconductive layer 26 is made of a nonconductive material such as a nonconductive paint or a seal material. A groove 40 is provided in the main body shaft so as to pass through the center, and the main body shaft and the conductive rubber 30 are closely fitted with no gap, and when crushed, air can pass through the central groove. The conductive rubber is also coated with a resin such as acrylic or urethane that is thin and nonconductive so as to maintain electrostatic capacity in order to improve lubricity during operation.

  3D, the main body shaft has a plastic 22 whose inside is not hollow as compared with the structure of FIG. 3B, but the other structure is similar to FIG. It shows that it has three layers of the non-conductive layer 26 and further has the conductive rubber 30. The non-cavity plastic 22 is applicable to non-conductors such as other types of resins. The conductive rubber 30 is coated with a resin such as acrylic or urethane that is thin and nonconductive so as to maintain electrostatic capacity in order to improve lubricity during operation.

FIG. 4 is a cross-sectional view showing a state in which the conductive rubber 30 of the present invention is crushed and before and after.
4A shows a state before being pressed when operating the touch panel, and FIG. 4B shows a state where the head of the conductive rubber 30 is crushed by being pressed against the panel, and the air in the conductive rubber 30 is blown away. Indicates leakage. FIG. 4 (c) shows a state in which the air is leaked and crushed into the conductive rubber, where the air again flows from the groove and is restored to the original state, and is joined to the main body shaft without any clearance. .
As a result of flexible air traffic, it represents a state where it can be operated repeatedly without any problems.

FIG. 5 is a front view and a sectional view of the touch pen according to the first embodiment of the present invention.
In this embodiment, the portion having the configuration of the main body shaft of the present invention is the clip portion 20a of the ballpoint pen, but the portion 50 of the body of the ballpoint pen can also be configured as the main body shaft.
The tip part of a normal ballpoint pen is provided with a knock part having conductive rubber 30a at the other tip, and the clip part 20a corresponding to the main body shaft is subjected to vapor deposition plating processing with a conductive material or coated with conductive paint, and the surface thereof It is made of plastic coated with a non-conductive material such as non-conductive paint.
A groove 40a is provided at a joint portion fitted to the conductive rubber at one end of the clip portion. In FIG. 5, the groove 40 a is disposed so as to penetrate the center, but it is also possible to provide a groove on the side wall of the clip 20 a at the joint portion.

  In addition to using it as a normal ballpoint pen, the user can use it as a touch pen for a capacitive touch panel by having the configuration of the present invention in the knock portion. In the knock portion, the conductive rubber 30a is coated on the clip portion, and in order to make the panel operate smoothly, a resin such as acrylic or urethane that improves lubricity is applied. As an operation method, when the user grips and uses the clip portion 20a which is the main body shaft, static electricity is transmitted from the main body shaft to the conductive rubber, and the panel is made to sense the static electricity, thereby enabling the operation.

  FIG. 6 is a front view of a touch pen having a figure shape according to the second embodiment of the present invention. The main body shaft 20b includes a figure 110 having a conductive transparent paint applied on the surface thereof, and a conductive rubber 30b firmly fitted thereto. Like the touch pen 100, the figure 110 has a groove at the joint portion with the conductive rubber 30b, and the user can operate the panel by grasping the figure. Further, the surface of the main body shaft is coated with a non-conductive material such as a non-conductive paint or a sealing material so as to improve the colorability and wear resistance. As described above, if the main body shaft 20b is made conductive by applying vapor deposition plating or conductive paint, any shape figure can function as a touch pen according to the features of the present invention. Can be able to.

  In the present invention, unlike FIG. 2, when the panel is operated as shown in FIG. 4, even if the conductive rubber is crushed, air can flow in from the grooved side wall or through the central portion. It is possible to restore to the state of Accordingly, the conductive rubber provides a touch pen with high operability that can be restored even when it is crushed by the flexible air coming and going through the groove of the body shaft.

20 ... Body shaft 22 ... Plastic 24 ... Conductive layer 26 ... Non-conductive layer 30 ... Conductive rubber 40 ... Groove 50 ... Ballpoint pen body 60 ... Ballpoint pen core 70 ..Grip rubber 100 ... Touch pen in Example 1 110 ... Figure in Example 2 200 ... Main body shaft 300 ... Conductive rubber 400 ... Metal ring

Claims (4)

Joining a conductive rubber with a hollow, convexly curved head to a body shaft made of a resin such as plastic, coated with a conductive substance,
Capacitive touch panel, characterized by a groove that allows air to enter and exit at the joint with the body shaft to restore the conductive rubber when the head is crushed by touch Touch pen.   The touch pen according to claim 1, wherein the groove is provided so as to penetrate a side wall of a joint portion between the main body shaft and the conductive rubber or a center of the main body shaft. When providing the groove on the side wall of the joint portion between the main body shaft and the conductive rubber, two or more are provided, one or two of which are deeper than the other grooves,
The touch pen according to claim 1, wherein when the conductive rubber and the main body shaft are joined, a groove provided deeper than the other groove is provided so as to be recognized as a groove from the outside.   2. The touch pen according to claim 1, wherein the surface of the conductive rubber is coated with a resin such as acrylic or urethane in order to improve operability to the touch panel, thereby providing lubricity.

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