KR101003070B1 - Stylus pen - Google Patents

Abstract

PURPOSE: A stylus pen suitable for a touch screen of an electrostatic capacitive type is provided to prevent the damage of the stylus by preventing the insertion of a piston rod. CONSTITUTION: A pressurization member(30) for an information input touch is combined in the end part of a body. The pressurization member comprises a rubber tip(31) having conductivity and a coupling pin(33). One side of the coupling pin is separated with the rubber tip. If the rubber tip pressurizes the touch screen surface, the contact area of the rubber tip is increased. The coupling pin includes a soft member.

Description

Stylus Pen {STYLUS PEN}

The present invention relates to a stylus pen for inputting information by touching and pressing a touch screen surface.

More specifically, when pressurizing the capacitive touch screen by putting a gap between the conductive rubber tip and the coupling pin of the pressing member in terms of usability, the contact area between the rubber tip and the touch screen is increased to reduce errors in information input and Prevent the touch screen from being burned out,

In addition, a single chuck member prevents both unintentional withdrawal or withdrawal of the piston rod while the piston rod is pulled in or pulled out of the cylinder body, and the reciprocating motion of the piston rod (ie, the pulling and withdrawing operation) is smooth and stable. A stylus pen is performed.

Recently, various terminals such as mobile phones, navigation devices, PDAs, etc., adopt a touch screen terminal that does not require a separate keypad for light weight, miniaturization trend, and convenience.

A touch screen terminal is a terminal in which a user directly touches a screen to input various information.

A stylus pen is used to input information for operating such a touch screen terminal.

FIG. 1 shows a representative stylus pen according to the prior art, which is a one-touch opening and closing stylus pen by Japanese inventor No. 0691359 (February 28, 2007).

As shown in the drawing, the stylus pen has a tip 11a at the end for pressing information on the touch screen surface to input information.

In general, it is provided with a cylinder body 30 and a piston rod 10 drawn in and drawn out of the cylinder body so as to be easy to carry and have a length sufficient to be held by hand when in use.

For reference, FIG. 1 is a diagram showing FIGS. 4 and 5 of the registered patent publication of Patent No. 0691359 in one drawing,

Reference numerals in the present specification with reference to FIG. 1 may refer to the above patent publications.

In addition, reference numerals associated with components of the present invention of FIGS. 1 and 2 to 5 are irrelevant.

The stylus pen is not easily burned out and the piston rod must not be withdrawn or drawn in unintentional situations in order to function properly.

In other words, the piston rod is unintentionally drawn out by external forces such as shaking while carrying the piston rod in the cylinder body so that the stylus pen is short in length, or presses the surface of the touch screen after the piston rod is pulled out. The piston rod shall not retract as a reaction of force.

However, referring to the related art of FIG. 1, in the state where the piston rod 10 is drawn into the cylinder body 30, the piston rod 10 is not provided with a means for directly preventing the piston rod from being pulled out, and in front of the cylinder body 30. Cap 50 to be coupled to indirectly hold the piston rod 10 to prevent the withdrawal. In the state where the piston rod 10 is drawn out, the inclined holding portion 15a provided at the rear of the piston rod contacts the bushing 35 provided at the front inner surface of the cylinder body 30 to prevent the pulling in by frictional force. .

Therefore, the prior art of FIG. 1 cannot prevent the unintentional withdrawal of the piston rod 10 when the cap 50 is detached from the cylinder body, and holding in the state where the piston rod 10 is drawn out for information input. Only the frictional force of the contact portion 15a and the bushing 35 is limited to counteract the pressing force applied when the information is input, and thus the piston rod cannot be prevented from being inadvertently introduced.

In addition, a method of sensing a touch position of the touch screen includes a piezoelectric method, a resistance change method, and a capacitance method.

Among them, a piezoelectric method that detects a touch position by pressing force by arranging piezoelectric elements under each cell of the touch screen is mainly used in the touch screen. In recent years, as the technology evolves, a dielectric sheet is disposed below the touch screen. The use of touch screens that employ capacitive sensing to sense touch position from changes in capacitance of a site is increasing.

The stylus pen of the prior art shown in FIG. 1 has a rounded shape of the tip 11a but is pointed and short in diameter and is considered to be used for a piezoelectric touch screen.

In the piezoelectric touch screen, the force for pressing the screen by the tip 11a is transmitted to the piezoelectric element as it is and should not affect other piezoelectric elements. Therefore, the tip 11a has a sharp point (width) as shown in FIG. This short, tip has a hard stiffness. Thus, there is a risk that the tip will damage the screen when it is pressed against the screen surface.

In the capacitive touch screen, the force that the stylus pen presses at the time of touch is not important, and whether there is a change in capacitance at the touch position is important, so it will be impossible to use the piezoelectric stylus pen.

The capacitive stylus pen is not important to press the screen surface, so it is necessary to prevent the screen from being burned by the pressing force, and to touch the two cells of the screen at the same time. In this case, the tip of the cell having the larger contact area is judged to have been touched, so the tip needs to touch the screen with sufficient area. However, if the tip area is large before the screen is touched, the stylus pen becomes thicker, so it is preferable to increase the contact area after the touch.

The present invention solves the problem of the stylus pen according to the prior art as above,

In terms of usability, when pressurizing the capacitive touch screen with a gap between the conductive rubber tip of the pressing member and the coupling pin, the contact area between the rubber tip and the touch screen is increased to reduce an error in information input and the touch screen is pressed by the pressing force. To prevent burning

An object of the present invention is to provide a stylus pen suitable for use in a capacitive touch screen.

In addition, the present invention prevents the piston rod from being drawn out or unintentionally drawn in or out of the cylinder body to prevent the stylus pen from being burned out or functioning properly (information input operation), and unintentional drawing It is an object of the present invention to provide a stylus pen that can reduce costs by preventing overdrawal by using a single chuck member.

Stylus pen according to the present invention for achieving the above object is

body;

A pressing member for information input touch coupled to an end of the body;

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The pressing member is

Rubber tip having electroconductivity,

It is made to include a coupling pin inserted into the rubber tip,

There is a clearance between the end of the coupling pin and the inner surface of the rubber tip has an air layer, characterized in that the contact area of the rubber tip is increased when pressing the touch screen surface of the rubber tip.

Stylus pen according to the present invention

The coupling pin is formed with a vent,

The coupling pin includes a fixture coupled to the body, and a soft member coupled to the end of the fixture,

It is preferable that the air passage is formed in the fixed body and the soft member.

In addition, the stylus pen according to the present invention

Cylinder body;

A piston rod accommodated in the cylinder body and drawn in and drawn out, the piston rod having upper and lower ends, respectively;

An information input touch pressing member coupled to the front end of the cylinder body or the front end of the piston rod;

A chuck member inserted into and coupled to the inner surface of the cylinder body to prevent the piston rod from being unintentionally drawn out and drawn out by engaging the upper or lower engaging portion while the piston rod is pulled into and out of the cylinder body; It is made to include.

And the piston rod is

A shaft inserted into and received in the accommodation portion of the cylinder body;

A guide member coupled to the front end of the shaft and in contact with an inner surface of the receiving part to guide linear reciprocation of the shaft;

It is coupled to the rear end of the shaft, the rear end is made to include a holding member exposed to the rear of the cylinder body, the user grips,

On the outer periphery of the guide member and the gripping member is characterized in that the engaging portion is engaged with the chuck member is formed protruding,

And a body cap fixedly coupled to the front inner surface of the cylinder body and inserted into and fixed to the pressing member.

The outer periphery of the chuck member is formed with a projection is fixed to the fixed groove formed on the inner surface of the cylinder body fixedly coupled to the projection, the front surface of the inner surface is formed with a front locking groove that the engaging portion of the guide member is caught, It is characterized in that the rear locking groove is formed on the rear of the holding portion of the holding member.

Stylus pen according to the present invention having the configuration as described above

The chuck member holds the piston rod while the stylus pen is in or out, preventing the piston rod from being unintentionally pulled out or pulled out regardless of the user's intention. One chuck member prevents both unintentional pulling and withdrawal, thereby reducing manufacturing costs.

The rubber tip of the pressing member for pressing the screen surface is made of a rubber material having elasticity and conductivity, and has a play between the inner surface of the rubber tip and the end of the coupling pin so that the screen is touched without touching the screen when touching the screen surface. The increased area makes the stylus pen suitable for capacitive touch screens.

1 is a cross-sectional view of the retracted and withdrawn state of the stylus pen according to the prior art.
2 is a perspective view of a stylus pen according to the present invention;
3 is an exploded view of the stylus pen shown in FIG.
4 is a cross-sectional view of the retracted and withdrawn states of the stylus pen according to the present invention.
5 is a cross-sectional view of a retracted and withdrawn state of the stylus pen to which the chuck member of another embodiment is applied.
6 is a view of a modification of the pressing member.
7 to 9 are schematic cross-sectional views of various rubber tips and coupling structures thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

The present invention may be modified in various ways and may have various forms, and thus embodiments (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific form disclosed, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In each of the drawings, the same reference numerals, in particular, the tens and ones digits, or the same digits, tens, ones, and alphabets refer to members having the same or similar functions, and unless otherwise specified, each member in the figures The member referred to by the reference numeral may be regarded as a member conforming to these criteria.

In addition, the components in each of the drawings may be represented by an excessively large (or thick) small (or thin) or simplified by considering the convenience of understanding or the like, thereby limiting the protection scope of the present invention It should not be.

The terminology used herein is for the purpose of describing particular embodiments (suns, aspects, and embodiments) (or embodiments) only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms “comprises” or “consists” are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, but one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

The present invention comprises a cylinder body 10, the piston rod 20, the pressing member 30, the chuck member 40, the cap member 70 as shown in the drawing. For reference, the reference numerals added in the following description of the present invention are independent of the reference numerals shown in the prior art of FIG.

The cylinder body 10 has an accommodating part 11 penetrating back and forth in the inner side, and the thread 15 is formed on the front inner surface of the accommodating part 11 in which the outer periphery of the body cap 60 is screwed. The rear inner surface is provided with a fixing groove 13 to which the fixing protrusion 41 of the chuck member 40 forcedly inserted is seated.

The body cap 60 is attached to the inner surface of the cylinder body 10 by an adhesive in addition to the screw coupling, or may be coupled in an interference fit manner.

The piston rod 20 is accommodated in the accommodating part 11 of the cylinder body 10, and moved back and forth along the accommodating part 11 to be drawn in and out of the accommodating part 11.

The piston rod 20 includes a shaft 21, a guide member 23, and a gripping member 25.

The main shaft 21 is formed with a through hole 22 penetrating back and forth inside.

The guide member 23 and the gripping member 25 are forcibly inserted into the through holes 22 and fixedly coupled to the front and rear of the shaft 21, respectively.

In addition, the drawing shows that the stylus pen is drawn out in two stages using a single cylinder body 10 and a single piston rod 20 (particularly, the shaft 21), and the cylinder body 10 or the piston rod 20 is shown. It may be provided with a plurality of draw and withdrawal possible to be withdrawn in multiple stages.

The guide member 23 is inserted into the front through-hole 22 of the shaft 21, the insertion portion 233 is coupled to, and the receiving portion of the cylinder body 10 connected to the insertion portion 233 ( 11) a contact portion 235 which is in contact with the inner surface and guides the linear reciprocating motion of the shaft 21 (that is, the drawing and drawing operations).

In addition, the contact portion 235 has a sufficient length so that the shaft 21 can linearly move in the front and rear direction as much as possible without moving left and right during the reciprocating movement, and the contact portion 235 has an adhesive force with the inner surface of the receiving portion 11 on the outer circumference. Two thin rubber packings 237 are coupled to be spaced apart by a certain distance.

In addition, the inner and outer air moves in accordance with the reciprocating motion of the guide member 23 by spatially connecting the inner and outer portions of the contact portion 235 to the contact portion 235 which is in close contact with the inner surface of the accommodating portion 11 by the rubber packing 237. And slit groove 236 is formed so that the reciprocating movement of the guide member 23 is made to flow smoothly).

And at the outer periphery between the insertion portion and the contact portion 235, the engaging portion 231 is seated in the front locking groove 43 of the chuck member 40 is formed protruding in an annular shape.

The gripping member 25 is an insertion part 253 inserted into the rear through hole 22 of the shaft 21 and a gripping part connected to the insertion part 253 and exposed to the rear of the cylinder body 10. 255 is made.

The outer periphery of the gripping portion 255 is formed with a gripping groove 256 to facilitate gripping when the user grasps and pulls (ie, pulls out the piston rod 20).

And at the outer circumference between the insertion portion 253 and the gripping portion 255, the catching portion 251 that is seated in the rear catching groove 45 of the chuck member 40 is protruded in an annular shape.

The chuck member 40 is forcefully inserted into the rear of the receiving portion 11 of the cylinder body 10 is coupled.

The outer periphery of the chuck member 40 is formed with an annular fixed projection 41 seated in a fixed groove 13 formed on the inner surface of the receiving portion 11 in an annular shape,

In front of the inner surface is formed a front catching groove 43 for seating the engaging portion 231 is formed in the guide member 23 of the piston rod 20 is drawn out, the piston rod 20 is drawn behind the inner surface The rear catching groove 45 to which the catching part 251 formed in the holding member 25 of the side rests is formed.

And the front of the front locking groove 43 and the rear of the rear locking groove 45 is inclined, so that the front and rear locking portions 231, 253 can easily ride over.

The body ring 50 is inserted into and coupled to the rear accommodating part 11 of the cylinder body 10 into which the chuck member 40 is inserted to prevent the chuck member 40 from being separated from the accommodating part 11. .

FIG. 5 shows chuck members 40a and 40b in another embodiment to prevent unintentional pulling and unloading of the piston rod 20.

The chuck member shown in FIG. 5 is coupled to the lower portion of the cylinder body 10 to prevent unintentional pulling of the piston rod 20 and coupled to the upper portion of the cylinder sea and to unintentionally withdraw the piston rod. It consists of a second chuck (40a) to prevent.

The outer periphery of the first chuck (40a) is formed with a fixing projection (41a) to be seated in the fixing groove 10 of the cylinder body, and the engaging portion 231 of the guide member 23 is seated on the inner surface The engaging groove 43a is formed.

On the outer circumferential upper portion of the second chuck 40b, a latching step 41b is formed on the upper jaw formed on the upper inner surface of the cylinder body, and another inner surface is formed on the upper outer circumference of the guide member. A locking groove 42b on which the locking portion 232 is seated is formed.

The body cap 60 is screwed to the front receiving portion 11 of the cylinder body 10.

A corresponding screw thread 65 is formed on the rear outer periphery of the body cap 60 so as to be screwed to the thread 15 formed on the inner surface of the accommodating part 11, and the body of the cap member 70 is formed on the front outer periphery. The groove 64 to which the unevenness | corrugation 74 formed in the chuck 73 is settled is formed.

The pressing member 30 is coupled to the front end of the cylinder body 10 or the front end of the piston rod 20, and presses the surface of the touch screen to input information. In other words, in the stylus pen of the type in which the piston rod 20 is drawn out to the rear of the cylinder body as shown in the drawing, the pressing member 30 is coupled to the front end of the cylinder body 10, and the piston rod 20 is drawn out to the front. In the type, the piston rod 20 is coupled to the front end.

The pressing member 30 includes a rubber tip 31 and a coupling pin 33.

The rubber tip 31 is made of a rubber material having elasticity, so that the screen surface is not applied to the screen surface when pressed against the screen surface. The rubber tip 31 has a conductive property to change the capacitance on the screen contact portion 235 when the screen surface is touched. Let's do it.

The coupling pin 33 is coupled to the coupling portion 35 is inserted into the body cap 60, the coupling portion 35 is exposed to the outside of the body cap 60 and the rubber tip 31 It is composed of a pin 34 to be accommodated in the receiving groove (32).

In addition, there is a clearance space 36 between the pin portion 34 and the inner surface of the rubber tip 31. Thus, when the pressing member 30 touches the screen, the rubber tip 31 retracts by the clearance space 36 after contacting the screen, dispersing and buffering the force applied to the screen at an instant, and also as long as the rubber tip ( 31) and the contact area of the screen increases.

In addition to the rubber tip 31 and the coupling pin 33, the pressing member 30 may further include a fixing member 38 and a connecting member 37 as shown in FIG.

In the stylus pen, the most load is repeatedly and continuously applied to the pressing member 30. Therefore, when used for a long time, there is a possibility that the pressing member 30 is pushed back by the repeatedly applied load, so that it can be separated and detached from the body cap 60. To prevent this, the fixing member 38 and the connecting member 37 are prevented. to be.

The coupling pin 33 is inserted and coupled to the front of the connection member 37, the fixing member 38 is inserted and coupled to the rear.

The fixing member 38 is inserted into the front from the rear of the body cap 60 is coupled.

In addition, a plurality of tapered protrusions 381 are formed at the outer circumference of the fixing member 38 in contact with the inner surface of the body cap 60 so as to allow forward movement but not backward movement.

In addition, the tapered protrusions 381 are formed in various places of the cutting grooves 383 having cut surfaces, and the tapered protrusions 381 are separated by a plurality of unit taper protrusions, such as barbs of fishing needles, to hold the fixing member 38. The body cap 60 was not to be separated more strongly.

The cap member 70 is detachably coupled to the front of the cylinder body 10, and includes a lid 71, a body chuck 73, and a cap ring 75.

The lid 71 is provided with a loop so as to walk on a mobile phone or a key ring.

The body chuck 73 is inserted and coupled to the inner surface of the lid 71, the inner surface is formed with an unevenness 74 is seated in the groove 64 of the body cap 60 to be coupled and detached.

The cap ring 75 is inserted into the inner surface of the lid 71 into which the body chuck 73 is inserted and coupled to prevent separation of the body chuck 73.

7 to 9 are schematic cross-sectional views of various embodiments of the rubber tip R forming the core of the pressing member for input in the stylus pen according to the present invention and the coupling pin T for coupling to the body. (For convenience, some different reference numerals are used for members having the same function among the reference numerals of FIGS. 1 to 6 and the reference numerals of FIGS. 7 to 9).

In addition, the term 'body' in the claims and the detailed description of the present invention includes a simple stylus pen without a drawing structure regardless of a drawing structure having two or more stages consisting of a cylinder rod and a piston rod of another structure described with reference to FIGS. 1 to 6. Are terms chosen to encompass,

In addition to the rod-shaped body, it is an expression for encompassing a form in which the rubber tip forming the air layer of the present invention is introduced into members of various shapes.

In addition, the coupling pin (T) for introducing a soft conductive rubber tip (R) to the body encompasses both the body and the separate or integral.

A stylus pen for an electronic device having a touch screen of a constant voltage type currently has to form a touch area of at least 5 mm in diameter.

If the diameter of the tip is more than 5mm, it is difficult to provide a compact design to meet the tendency of light and short.

Therefore, there is an urgent need to release the tip structure of the stylus pen which normally maintains a small diameter end and spreads when pressed to provide a wider touch area.

To this end, in the present invention, as shown in FIG. 7, first, by providing a clearance space between the coupling pin (T) and the rubber tip (R) to form an air layer (S), the rubber team (R) immediately with a slight force. It is important to spread the touch area so as to provide a contact area of at least 5 mm in diameter (the present invention should not be limited by the expression “diameter 5 mm”).

Furthermore, in case of using the stylus pen, the air layer S does not resist during pressurization and the air filled in the clearance space between the coupling pin T and the rubber tip R is immediately released, so that the rubber tip does not have a time difference from the pressurization time. To be deformed

It is preferable that the air passage A is formed in the coupling pin T.

The aeration passage (A) is the air discharged in the clearance space between the coupling pin (T) and the rubber tip (R) as well as the air comes back into the clearance space when the pressure is released, the rubber tip (R) is restored It is a function to immediately switch to input standby state.

In addition, as shown in Figure 8, the coupling pin is fixed to the body (T),

It includes a soft member (T1) coupled to the end of the fixture, it is preferred that the air passage (A) is formed in the fixture and the soft member.

The soft member T1 may prevent the rubber tip R or the touch screen of the electronic device from being damaged by unnecessary and excessive pressing force.

The soft member may be made of various materials such as rubber, conductive rubber, elastomer such as silicon, brush type member, and other synthetic resin.

Next, FIG. 9 has a structure in which the soft member T2 is more convenient to be mounted on the fixed body T than in FIG. 8.

In the above description of the present invention, a stylus pen having a specific shape and structure has been described with reference to the accompanying drawings, but the present invention can be variously modified and changed by those skilled in the art, and such modifications and changes are the scope of protection of the present invention. Should be interpreted as belonging to.

10: cylinder body 11: receiving portion
13: fixing groove 15: thread
20: piston rod 21: shaft
23: guide member 25: gripping member
30: pressure member 31: rubber tip
33: coupling pin 36: play space
37 connection member 38 fixed member
40: chuck member 41: fixed protrusion
43: front locking groove 45: rear locking groove
50: body ring 60: body cap
70 cap member 71 lid
73: body chuck 75: capping

Claims (4)

body;
A pressing member for information input touch coupled to an end of the body;
Including but not limited to,
The pressing member is
Rubber tip having electroconductivity,
It is made to include a coupling pin inserted into the rubber tip,
There is a clearance between the end of the coupling pin and the inner surface of the rubber tip has an air layer, the contact area of the rubber tip is increased when pressing the touch screen surface of the rubber tip,

Stylus pen characterized in that the coupling pin is formed with a vent. delete The method of claim 1,
The coupling pin is fixed to the body and,
A stylus pen comprising a soft member coupled to the end of the fixture. The method of claim 3, wherein
A stylus pen, characterized in that the air passage is formed in the fixing member and the soft member.

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