KR101136588B1 - Writing instrument having touch pen function - Google Patents

Abstract

PURPOSE: A writing instrument with a touch pen function is provided to reduce costs and increase efficiency of using a pen. CONSTITUTION: An external housing(110) has a fixed receiving space. An inner housing receives a core. A handwriting unit is formed on an end in front of the inner housing. A rear end cap unit(140) controls input/output of the core and prevents separation of the core. A frontal end cap unit(150) protects the handwriting unit of the inner housing.

Description

Writing instrument having a touch pen function {Writing Instrument Having Touch Pen Function}

The present invention relates to a writing instrument in which a conductive coating layer is formed on an inner housing or an outer housing of a writing instrument and fuses a touch pen function. More specifically, the conductive coating is applied to the inner housing or the outer housing of the writing instrument to form a conductive coating layer. And a combination holder and a touch member made of a material that can be energized with the conductive coating layer in the rear end cap portion, so that the user grips the touch member in a relatively simple configuration so that a touch input is made to the touch panel to combine writing instruments and a touch pen. The present invention relates to a writing instrument having a touch pen function which increases the purchasing power of a product since the cost reduction and the use efficiency are increased and the manufacturing cost is significantly lowered.

In general, in recent years, portable terminals including mobile phones, PDAs, PMPs, MP3 players, and the like have become smaller and smaller in size for easy portability.

Accordingly, the key button input method of the portable terminal device has also been adopted a touch screen method so that the user can more conveniently input or select information according to the trend of miniaturization of the terminal.

The touch screen method is a method of directly inputting or selecting information by interfacing with a computer through a screen. When a touch of a person's hand or an object is touched at a specific position of the screen, the touch screen detects coordinates of the touched position. The function corresponding to the coordinate value through the contacted coordinate value is executed by the software. Accordingly, the touch screen provides both a function as an information display unit and a function as an input unit.

Such a touch screen can be classified into various methods, which are largely divided into a resistive film method, a surface ultrasonic method, an infrared method, and a capacitive method.

First, a resistive touch screen has a structure in which a resistive material is coated on a glass or transparent plastic plate and a polyester film is covered thereon. Insulation rods are installed at regular intervals so that the two surfaces do not touch each other. When the screen is touched, the resistance value changes and thereby the voltage is detected to detect the touch point.

The surface ultrasonic method is composed of a transmitter that emits sound waves at one corner of the glass, a reflector that reflects sound waves at regular intervals, and a receiver at the other side thereof. An object such as a finger touches the screen. When it interferes with the path of sound waves, the point of time is calculated to detect the touch point.

In the infrared method, a matrix is formed by arranging infrared LEDs, which are light emitting devices, and phototransistors, which are light receiving devices, facing each other. When an object such as a finger approaches the inside of the matrix to block infrared rays, the sensor detects this and detects a touch point.

In addition, the capacitive coating coats a special conductive metal on both sides of the glass and applies a voltage to the four corners of the screen to generate a high frequency on the surface of the touch screen.When a body such as a user's hand touches the touch screen, a certain amount of current This is absorbed in the user's body, and thus, the touch screen detects a change amount of current and recognizes a touch point, which will be described in detail with reference to FIG. 1.

1 is a view showing a laminated structure of a capacitive touch screen applied to a portable terminal.

As shown, the stacked structure of the capacitive touch screen applied to the portable terminal has a capacitive sensor 70 as shown in Figure 2, the input key 20 is installed in the case 10 of the portable terminal The capacitive sensor 30 made of a conductive contact member 31 and a measurement element 32 electrically connected to the conductive contact member 31 is formed at a lower portion thereof.

As a driving principle of the capacitive touch screen having such a laminated structure, when the user's body contacts the input key 20, a change in capacitance occurs. The change in capacitance generated is measured and transmitted to a controller (not shown). When the change in capacitance is greater than or equal to a predetermined size, the controller determines a valid signal to perform a touch input.

As such, when the capacitive method is applied to the touch screen, the position sensing can be performed by only the touch, thereby reducing the stacking interval of the touch screen, increasing durability and light transmittance, and minimizing the malfunction caused by external pressure. Note that there is an advantage, the trend is getting the most attention among various touch methods.

As described above, since the capacitive touch screen applied to the portable terminal detects coordinates through the contact of the body, a user whose finger is thick when touched using the user's body finger does not touch the correct position of the screen panel or other In some cases, it is often recognized that the location is touched.

In order to solve this problem, a touch element suitable for a capacitive touch screen is provided with a separate touch pen made of metal, or a touch pen functioning as a writing instrument must be made of only a metal material. There is a need for storage or inconvenience, and the purchase price burden, and the additionally provided metal touch pen has a basic function other than the information input means, which is a basic function, but has a big problem that the public effectiveness is greatly reduced due to the high manufacturing cost.

The present invention has been made in order to solve the above problems, and the conductive coating is applied to the inner housing or the outer housing of the writing instrument to form a conductive coating layer and a coupling holder made of a material that can be energized with the conductive coating layer in the rear cap portion; As it consists of a touch member, the user can use a writing instrument and a touch pen as the user inputs the touch panel by gripping the touch member in a relatively simple configuration, thereby reducing the cost, increasing the efficiency of use, and significantly lowering the manufacturing cost. An object of the present invention is to provide a writing instrument having a touch pen function in which product purchasing power is increased.

The present invention has the following features to achieve the above object.

The present invention has a hollow to have a predetermined receiving space and an outer housing made of an insulating material including a synthetic resin material or wood, and a core material embedded in the outer housing and containing ink or sharp seam and in contact with the writing object An inner housing having a writing portion formed at the front end to be formed, and a rear end cap portion coupled to the rear end of the inner housing or the outer housing to intercept the drawout of the core material or to prevent the core material from being separated, and the lower portion of the inner housing or the outer housing. A writing instrument comprising a shear cap portion which is integrally formed with or detachably coupled to and protects the writing portion of the inner housing, wherein the conductive coating layer is formed on the outer surface or the inner surface of the outer housing of the writing instrument or the outer surface of the inner housing. The rear cap portion is formed with a conductive coating layer Is coupled to the outer housing or the inner housing so as to be conductive so that the end cap portion of the rear cap portion contacts the capacitive touch panel so that user command information of the touch panel can be input.

Here, the conductive coating layer is formed by immersing in the coating agent in the outer housing or the inner housing of the writing instrument for 10 minutes to 3 hours and then naturally dried at room temperature or dried at 80 ℃ to 120 ℃, the coating agent is graphite by weight ratio (%) 20% to 23%, carbon 1% to 3%, dispersant 0.1% to 0.5%, thickener 0.1% to 0.4%, thixotropy imparting agent 0.1% to 0.3%, foaming agent 0.1% to 0.3%, defoamer 0.1 % To 0.4%, adhesive 10% to 16%, stabilizer 0.3% to 0.8%, moisture resistant 0.5% to 1.0%, water 50% to 65%.

In addition, the rear end cap portion is made of an elastic touch member which is inserted into the outer housing or the inner housing and coupled to a predetermined portion, and has a hollow, the lower mouth side is opened and seated on the seating surface of the upper holder. The coupling holder includes an inner body that is inserted into and fitted into an end housing of an outer housing or an inner housing, and a settled body protrudingly extended to correspond to an inner surface of the touch member on the upper inner body.

In addition, the touch member is any one selected from silicon, urethane, rubber, synthetic resin, and fiber, and is formed by mixing carbon and metal powder when forming the touch member, or the conductive coating layer is applied to the inner or outer surface of the touch member.

According to the present invention, as the writing instrument and the touch pen can be used as a combination, the buyer can reduce the cost and increase the use efficiency, and the provider can increase the product purchasing power.

In addition, since the configuration is relatively simple, there is an effect of significantly reducing the product cost compared to the case of using a conventional conductive coil insertion method or a metal housing.

In addition, even though the outer housing of writing instruments is made of non-conductive material, that is, wood and synthetic resin, the conductive coating layer is formed on the inner housing to satisfy the conductivity for inputting commands to the touch panel. There is an effect that can be expressed.

In addition, if there is an existing writing instrument model, the touch pen function can be added only by forming the conductive coating layer and changing the rear end cap portion without changing the material or design, thereby significantly reducing the accompanying cost of new product development or production.

1 is a view showing a laminated structure of a capacitive touch screen applied to a portable terminal.
2 is a perspective view showing a writing instrument according to an embodiment of the present invention.
FIG. 3 is an enlarged perspective view of part A of FIG. 2.
4 is a cross-sectional view of the writing instrument according to an embodiment of the present invention.
5 is an enlarged view of a portion B of FIG. 4.
6 is a cross-sectional view of a writing instrument according to another embodiment of the present invention.

Hereinafter will be described in detail with the accompanying drawings for the writing instrument according to the present invention.

Figure 2 is a perspective view showing a writing instrument according to an embodiment of the present invention, Figure 3 is an enlarged assembled perspective view of the portion A of Figure 2, Figure 4 is a cross-sectional view of the writing instrument according to an embodiment of the present invention, Figure 5 4 is an enlarged view of a portion B of FIG. 4, and FIG. 6 is a cross-sectional view of the writing instrument according to another embodiment of the present invention.

Referring to the drawings, the writing instrument 100 according to the present invention has a hollow so as to have a predetermined accommodation space largely made of an outer housing 110 made of an insulating material including a synthetic resin material or wood, and embedded in the outer housing 110 The inner housing 120 and the inner housing 120 or the outer housing 110, in which a writing unit 130 is formed at the front end so as to receive a core material including ink or a sharp core, and to write in contact with the writing object. It is coupled to the rear end of the rear end cap portion 140 to prevent the pull out of the core material or to prevent the separation of the core material, and integrally formed or detachably coupled to the lower portion of the inner housing 120 or the outer housing 110 It consists of a front end cap 150 to protect the writing unit 130 of the inner housing 120.

Here, the outer housing 110 is a basic body that forms the appearance of the writing instrument and is provided to be gripped by a finger when the user writes or uses a touch function.

Such an outer housing 110 may be formed by stacking the handle groove or the non-slip rubber 160 so that the user can not easily and slip, it may be combined with a separate plug 161 to be plugged into a place such as a pocket.

In addition, the outer housing 110 is preferably composed of a cylindrical shape having a hollow inside, the inner housing 120 is embedded in the hollow inside.

Here, the inner housing 120 accommodates a core material including ink or a sharp core, and the writing unit 130 is formed at the front end so that writing can be made by contacting the writing object. When the writing instrument according to the present invention is sharp, the inner housing 120 will be a sharp barrel, and in the case of a pen it will be an ink bottle.

In addition, the writing unit 130 is integrally formed at the front end of the inner housing 120 or formed to be detachably detachable, and the core material such as a sharp seam or ink is formed to be written in contact with the writing object. Couplings and chucks coupled to the front end of the housing 120 will correspond to this, and in the case of a pen, a core end in contact with the ink core material accommodated in the inner housing 120 to receive ink liquid from the ink core material and to mark the writing object. This would be the case.

In addition, the outer side of the writing unit 130 is formed with a front end cap 150 that is integrally formed or detachably coupled to the lower portion of the inner housing 120 or the outer housing 110 to protect it.

The shear cap 150 may be formed in various ways, the present invention is not limited thereto.

One of the greatest features of the present invention is the conductive coating layer (T) is formed on the outer or inner housing 120 or the inner housing 120, the conductive coating layer (T) is the writing instrument 100 It is formed by immersing in the coating agent in the outer housing 110 or the inner housing 120 of 10 minutes to 3 hours, followed by natural drying at room temperature or drying at 80 ℃ to 120 ℃.

Of course, in order to apply to the inner surface of the outer housing 110, in addition to the above-described immersion method, the inner surface coating method using a roller will be preferable, in the case of the immersion method to the outer surface of the outer housing 110 or the inner housing 120 It is preferable to apply at the time of forming a conductive coating layer (T).

In addition, the conductive coating layer T may be formed by spraying the coating agent on the outer surface or the inner surface through a spray injection method. As such, the conductive coating layer T may be formed in various ways.

In addition, the coating agent for forming the conductive coating layer is 20% to 23% graphite, 1% to 3% carbon, 0.1% to 0.5% dispersant, 0.1% to 0.4% thickener, thixotropy 0.1% to 0.3%, 0.1% to 0.3% blowing agent, 0.1% to 0.4% antifoam, 10% to 16% adhesive, 0.3% to 0.8% stabilizer, 0.5% to 1.0% moisture resistant, 50% to 65% water It is created.

Here, the graphite may be made of natural graphite, and the mixing ratio of natural graphite and artificial graphite may be 1: 1 in order to increase uniform electrical resistance and conductivity and reduce cost.

At this time, if the amount of graphite is large, the electrical resistance value may be low, but the adhesion strength is weak, and the coating film is easily peeled off, if too small, the adhesion strength is good, but the conductivity is poor.

In addition, in the use of a dispersant, the conventional acrylic dispersant was used as about 2%, but in the present invention, it is preferable to use less than 0.5% of sulfate anionic surfactant. The coating film may be peeled off.

In addition, the thickener is provided to solve the problem that the graphite and carbon of the coating agent is easily precipitated in the present invention was added 0.1% to 0.4% as a thickener.

If the amount of the thickener is excessive, the composition becomes a gel and cannot be used over time, and the thickener according to the present invention preferably uses an acrylic thickener of the same type as the adhesive.

In addition, the thixotropic imparting agent is provided to increase the viscosity in order to prevent the problem of the composition flowing down, such thixotropic imparting agent is preferably used naponite.

At this time, when the amount of thixotropic imparting agent added is less than 0.1%, a flow occurs, and when more than 0.3%, the composition does not spread well, and thus an uncoated defect occurs.

In addition, when the coating composition is made without a foaming agent to generate bubbles, stains and drippings are generated.

In addition, the antifoaming agent is to remove the bubbles generated by the above-mentioned blowing agent in a suitable time when applied, if the bubbles do not burst may be a needle-like or droplet-shaped stains.

Therefore, when an anionic surfactant is used at a bubble removal rate of 5 seconds to 15 seconds, it has the cleanest coated surface.

When the composition and the mixing ratio as described above has a viscosity of 250cps to 456cps, the electrical resistance value was measured as shown in Table 1 below.

Metric

DRY OVEN 80 ℃ 5 minutes drying

A dry film

25 μm
33 μm
41 μm
Electric resistance value (Ω) / inch

280Ω
256 Ω
210Ω

Looking at the measured value, the thickness of the coating layer to be formed according to the immersion time or the spray injection amount when forming the coating layer can be set differently, when the formed thickness is 25㎛ has a resistance value of 280Ω.

In addition, in the case of 33 μm and 41 μm, the higher the thickness of the conductive coating layer T formed by the resistance values of 256 Ω and 210 Ω, respectively, the lower the resistance value, thereby improving the electrical conductivity.

Accordingly, when the conductive coating layer T is formed in the outer housing 110 or the inner housing 120, when the user grips the writing instrument, a small current flowing in the user's body flows into the conductive coating layer of the writing instrument. 110 or the rear end cap 140 is coupled to the rear end of the inner housing 120, such a rear end cap 140 is to intercept the pull out of the core material or to prevent the separation of the core material as well as the outer housing 110 ) Or is provided to receive a small current flowing in the inner housing 120 to the touch panel.

Here, the rear end cap 140 has a coupling holder 141 which is inserted into and coupled to the outer housing 110 or the inner housing 120 by a predetermined portion, and has a hollow, and an inlet side thereof is opened to open the coupling holder 141. It is made of a touch member 142 of elastic material seated on the seating surface.

Here, the coupling holder 141 is fitted into the end body of the outer housing 110 or the inner housing 120 is inserted into the inner body 141a, and the upper portion of the inner body 141a of the touch member 142 It consists of a settled body 141b protruding and extending to correspond in shape to the inner surface and the coupling holder 141 is preferably made of a metallic material that can be energized.

Of course, the coupling holder 141 may be made of a non-conductive material, that is, an insulating material, and formed by forming a conductive coating layer according to the present invention.

In addition, the coupling holder 141 may be coupled to the inner housing 120 by a forced fitting method as shown in FIG. 4 or screwed to the outer housing 110 as shown in FIG. 6, and in addition to the outer housing 110 in various forms. It may be combined with the internal housing 120.

The coupling holder 141 is coupled to contact the outer housing 110 when the conductive coating layer T is formed in the outer housing 110, and conversely, when the conductive coating layer T is formed in the inner housing 120. Of course it is coupled to contact.

The touch member 142 is any one selected from silicon, urethane, rubber, synthetic resin, and fiber, and is formed by mixing carbon and metal powder when the touch member 142 is formed, or the conductive coating layer T is a touch member. It is applied to the inner surface or the outer surface.

Since the touch member 142 is in direct contact with the touch panel, the end face is preferably hemispherical, and when the contact is pressed, the touch member 142 is partially pressed and restored to a circular shape when the contact is released.

As described above, the writing instrument 100 according to the present invention may be variously applied to various forms such as a sharp, an aqueous oil pen, a ball pen, a fountain pen, and is applicable to all writing instruments including the outer housing 110 and the inner housing 120.

In addition, when the conductive coating layer (T) is formed on the outer surface of the inner housing 120 according to the present invention, as the conductive coating layer is formed on the outer housing 110, various design changes such as color or printing are restricted. It has a feature that can prevent it.

In addition, after the conductive coating layer (T) according to the present invention is formed on the outer surface of the inner housing 120, even if the outer housing 110 of wood or synthetic resin (plastic) material is adopted, the conductive coating layer of the inner housing 120 It has already been proved through a number of experiments that the electric current according to (T) conducts a microcurrent in the user's body to enable smooth and stable touch pen function.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to those precise embodiments, and many alternatives, modifications, and variations will be apparent to those skilled in the art. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: writing instrument 110: external housing
120: internal housing 130: writing unit
140: rear end cap 141: coupling holder
141a: inner body 141b: settled body
142: touch member 150: shear cap
160: non-slip rubber 161: holder

Claims (4)

It has a hollow so as to have a predetermined receiving space, and an outer housing made of an insulating material including a synthetic resin material or wood, and a core material embedded in the outer housing and containing ink or sharp cores to be written in contact with the writing object. An inner housing formed at an additional front end, a rear end cap coupled to the rear end of the inner housing or the outer housing to intercept the drawout of the core material or to prevent the core from being separated, and integrally at the lower portion of the inner housing or the outer housing. In the writing instrument comprising a shear cap portion formed or detachably coupled to protect the writing portion of the inner housing,
A conductive coating layer is formed on an outer surface or an inner surface of the outer housing of the writing instrument or an outer surface of the inner housing, and the rear end cap portion is coupled to the outer housing or the inner housing on which the conductive coating layer is formed so as to be conductive to the capacitive touch panel. The end cap portion of the rear end is in contact so that the user command information of the touch panel can be input,
The rear end cap is an elastic touch member that is inserted into and coupled to the outer housing or the inner housing, and has a hollow material, and has a hollow opening, and the lower side of the cap is seated on the seating surface of the upper holder. Done,
The coupling holder is composed of an inner body which is inserted into the inner end body of the outer housing or the inner housing and inserted into the inner body, and a settled body protruding to be formed so as to correspond to the inner surface of the touch member on the upper inner body.
The touch member is any one selected from silicon, urethane, rubber, and synthetic resin, and is formed by mixing carbon and metal powder when the touch member is formed, or the conductive coating layer is applied to the inner or outer surface of the touch member. Writing utensils with a touch pen function.
The method of claim 1,
The conductive coating layer is formed by immersing in the coating agent in the outer housing or the inner housing of the writing instrument for 10 minutes to 3 hours and then naturally dried at room temperature or dried at 80 ℃ to 120 ℃,
The coating agent in the weight ratio (%) 20% to 23% graphite, 1% to 3% carbon, 0.1% to 0.5% dispersant, 0.1% to 0.4% thickener, 0.1% to 0.3% thixotropy imparting agent, 0.1% to 0.3% foaming agent, 0.1% to 0.4% antifoaming agent, 10% to 16% adhesive, 0.3% to 0.8% stabilizer, 0.5% to 1.0% moisture resistant, 50% to 65% water Writing utensils with a pen function.
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